0001]The present invention relates to an inductance adjustment apparatus, in particular, it is suitable for use to adjust the inductance of the electrical circuit.
BACKGROUND
[0002]Conventionally, it needs high to reduce emissions of greenhouse gases such as carbon dioxide to prevent global warming. For example, in the steel industry, it has been realized to operate the induction heating apparatus for quenching at a high frequency at high efficiency. The introduction of the induction heating device as an alternative technology for poor gas heating furnace having heating efficiency has been increasing in recent years. Further, in the automotive field, the development of techniques for feeding in a non-contact has been made with respect to electric vehicles.
[0003]
　These techniques are techniques for generating a voltage resonance or current resonance capacitors (capacitance C) to the high-frequency generator and load coil (inductance L) connected in series or in parallel. In these techniques, it is possible to heat the object to be heated without contact by the magnetic flux generated when the resonance current flows through the load coil. Moreover, these techniques may be powered by utilizing the electromagnetic induction phenomenon based on the magnetic flux generated when the resonance current flows through the load coil in a non-contact manner. Note that the resonance current, frequency refers to the current in the resonant frequency.
[0004]
　When using such resonance phenomenon, a capacitor (capacitance C) and the heating coil (inductance L) the frequency in the high-frequency generator if determined (resonance frequency) is determined uniquely. Therefore, at the time of start-up of the device, when the actual frequency is out of the target frequency, it is necessary to adjust the reactance. As a means therefor, conventionally, in order to obtain a target frequency, means for adjusting the electrostatic capacitance C of the circuit was taken.
[0005]
　Specifically, with respect to the circuit including the capacitor and the load coil, by connect and disconnect finely adjusting capacitor prepared in advance is considered a method of adjusting the capacitance C of the circuit. However, in this method, it is necessary to extra installation finely adjusting capacitors. Therefore, the apparatus becomes expensive. Also, when switching a frequency during operation, turn off the power, switching the power supply terminals of the fine adjusting capacitors automatically remotely, it is necessary to continue the operation in the incoming power again. Thus when, it is necessary terminal switch capable of remote operation. Therefore, the apparatus becomes expensive. Moreover, it is not technically easy to continuously vary the capacitance C of the circuit under large current.
[0006]
　Therefore, it is conceivable to adjust the inductance L of the circuit. As a technique for adjusting the inductance L of the circuit, there is a technique described in Patent Documents 1 to 3 below.
[0007]
　Patent Document 1, a technique relating to an induction heating, a method of adjusting the inductance L has been disclosed by moving the magnetic core in the solenoid coil. Specifically, in the Patent Document 1 technique, to adjust the inductance L by changing the occupancy of the magnetic core in the solenoid coil by moving the high magnetic core relative permeability in the solenoid coil.
[0008]
　Patent Document 2, a technique for non-contact power supply, without the use of magnetic cores, a method of adjusting the inductance L has been disclosed by stretching the solenoid coil.
[0009]
　Patent Document 3, a technique related to high frequency electronic circuits for use on a substrate, a method of adjusting the inductance L by changing the relative position between the two coils is disclosed. Specifically, in the Patent Document 3 technique, using two coils of the same shape. Change the gap of the two coils to change the rotation angle or opening angle of the two coils by or two coils and the coil end in the axial opened and closed or rotated.
CITATION
Patent Document
[0010]
Patent Document 1: JP 2004-30965 JP
Patent Document 2: JP 2016-9790 JP
Patent Document 3: JP 58-147107 JP
Summary of the Invention
Problems that the Invention is to Solve
[0011]
　However, in the technique described in Patent Document 1, inserting the magnetic core in the solenoid coil. Therefore, magnetic flux generated from the solenoid coil when a large current flows to the solenoid coil are concentrated in the magnetic core. Thus, the technique described in Patent Document 1, the loss of the magnetic core (loss iron loss and hysteresis) is large. Further, in the technique described in Patent Document 1, the solenoid coil is inductively heated by a magnetic flux concentrating on the end portion of the magnetic core. Therefore, in the technique described in Patent Document 1, it is not easy to improve the heating efficiency.
[0012]
　Further, in the technique described in Patent Document 2, for adjusting the inductance L and stretch the solenoid coil. Therefore, the amount of expansion and contraction of the solenoid coil, it is necessary to increase in accordance with the variable magnification of the inductance L. Thus, the technique described in Patent Document 2, the entire apparatus becomes large. Further, in the technique described in Patent Document 2, a support structure for supporting the deformation of the coil is complicated. Note that the variable magnification of the inductance L, a value obtained by dividing the maximum value of the inductance L at the minimum value of the inductance L.
[0013]
　The technique described in Patent Document 3, since the technology relating to high frequency electronic circuits for use on board, it is not easy to flow a large current to the high frequency electronic circuit. Also, even if were possible to state that can flow a large current to the high frequency electronic circuit, in the technique described in Patent Document 3, to change the rotation angle and the opening angle and the coil end in the axial. Excessive repulsive force or attractive force when a large current flows in several hundred to several thousand amperes, as in the case of performing the induction heating is generated between the two coils. In the technique described in Patent Document 3, since a structure in which the coil end and the shaft, it is not easy to repulsive force or attractive force described above is more occurs, to accurately adjust the inductance L. Further, in the technique described in Patent Document 3, more repulsive force and attractive force as described above occurs, there is a possibility that the inductance adjusting device may be damaged. Therefore, in the technique described in Patent Document 3 must have adopted a special structure to flow a large current. Further, in the technique described in Patent Document 3, the change in inductance L is proportional to the gap and the angle of the logarithmic. Therefore, in the technique described in Patent Document 3, the two gaps and rotation angle of the coil, the relationship between the inductance L deviates significantly from the linear relationship. Therefore, in the technique described in Patent Document 3, it is not easy to control the frequency with high accuracy.
[0014]
　The present invention has been made in view of the above problems, and an object thereof is to allow precise adjustment of the inductance of the electric circuit in a simple and compact structure.
Means for Solving the Problems
[0015]
　Inductance adjusting device of the present invention, a a inductance adjusting device for adjusting the inductance of the electrical circuit, a first coil having a first circumferential portion, and a second circumferential portion, and a first connecting portion, and a third circumferential portion, and a fourth circumferential portion, and a second coil having a second connecting portion has a first circumferential portion, said second circumferential portion, the third coiling part, and the fourth circumferential section, respectively, a portion that circulates so as to surround a region of the inside, the first connection portion, one end of said first circumferential portion, said second a portion for connecting the one end of the circumferential portion together, the second connection portion, one end of the third circumferential portion, a fourth portion which connects the one end mutually rounding part of, said first coil and said second coil are connected in series or in parallel, the said first circumferential section 2 rounding part is in the same plane, the third circumferential section and the fourth circumferential section is in the same plane, the a first circumferential portion and the second circumferential portion, the third circulating section and the fourth circumferential section are arranged in parallel with a spacing, at least one is between the first coil and the second coil, the first coil and the second the axis of the second coil rotates as the rotation shaft, the shaft includes a middle position of the center of the center and the second circumferential portion of said first circumferential portion, the center of the third circumferential portion and is an axis passing through the intermediate position of the center of the fourth circumferential portion, said second circumferential portion and the first circumferential portion, at least one of said first coil and said second coil It is arranged so as to keep the angle is shifted 180 ° in the direction to rotate, the said third circumferential section the Coiling part 4 is characterized in that at least one of said first coil and said second coil are arranged to keep the angle is shifted 180 ° in the direction to rotate.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016]
[Figure 1A] Figure 1A is a diagram showing a first example of the configuration of the inductance adjusting device.
FIG 1B] Figure 1B is a diagram showing an example of a state of a surface power supply terminal of the inductance adjusting device of FIG. 1A are arranged.
[Figure 2A] Figure 2A is a diagram showing a first example of the first coil and the first support member.
[Figure 2B] Figure 2B is a diagram showing a first example of the second coil and the second support member.
[Figure 3A] Figure 3A is a diagram illustrating overlapping the first coil in a certain state, the first coil in a state of 180 ° rotation of the central shaft as the rotational axis from the state.
[Figure 3B] Figure 3B is a diagram illustrating overlapping and the second coil of a certain state, and a second coil in a state of 180 ° rotation of the central shaft as the rotational axis from the state.
[4] FIG. 4 is a diagram showing an example of the positional relationship between the first coil and the second coil.
[Figure 5A] Figure 5A is a first example of the direction of the magnetic flux generated in the first coil and the second coil is a diagram showing with circuit symbols of the first coil and the second coil.
[Figure 5B] Figure 5B is a second example of the direction of the magnetic flux generated in the first coil and the second coil is a diagram showing with circuit symbols of the first coil and the second coil.
[Figure 6A] Figure 6A is a diagram of a first example of a magnetic flux generated in the first coil and the second coil is shown together with the first coil and the second coil in a state of being placed in the inductance adjustment apparatus .
[Figure 6B] Figure 6B is a diagram of a second example of a magnetic flux generated in the first coil and the second coil is shown together with the first coil and the second coil in a state of being placed in the inductance adjustment apparatus .
[Figure 7A] Figure 7A is a diagram showing an example of the relationship between the inductance and the rotation angles in the inductance adjustment apparatus of the present embodiment.
[Figure 7B] Figure 7B is a diagram showing an example of the relationship between the inductance and the rotation angle in the technique disclosed in Patent Document 3.
[FIG. 8A] Figure 8A is a diagram showing a first modification of the first coil and the first support member.
[Figure 8B] Figure 8B is a diagram showing a first modification of the second coil and the second support member.
FIG 9A] FIG 9A is a diagram showing a second modification of the first coil and the first support member.
[FIG. 9B] FIG 9B is a diagram showing a second modification of the second coil and the second support member.
[10] FIG 10 is a diagram showing a modification of the configuration of the inductance adjusting device.
[11] FIG 11 is a diagram showing a second example of the configuration of the inductance adjusting device.
FIG 12A] FIG 12A is a diagram showing a second example of the first coil and the first support member.
[Figure 12B] Figure 12B is a diagram showing a second example of the second coil and the second support member.
[13] FIG 13 is a diagram showing a third example of the configuration of the inductance adjusting device.
[Figure 14A] Figure 14A is a diagram showing a third example of the first coil and the first support member.
FIG 14B] FIG 14B is a diagram showing a third example of the second coil and the second support member.
[Figure 15A] Figure 15A is a diagram showing a fourth example of the configuration of the inductance adjusting device.
[FIG. 15B] FIG 15B is a diagram showing an example of a state of a surface power supply terminal of the inductance adjusting device of FIG. 15A are arranged.
[Figure 16A] Figure 16A is a first coil, the second coil is a diagram showing a first example of a connection method of the first coil, and a second coil.
[FIG. 16B] Figure 16B is a first coil, the second coil is a diagram showing a second example of the connection method of the first coil, and a second coil.
[FIG. 16C] FIG. 16C, the first coil, the second coil is a diagram showing a third example of wiring method of the first coil, and a second coil.
[FIG. 16D] FIG. 16D, the first coil, the second coil is a diagram showing a fourth example of a connection method of the first coil, and a second coil.
FIG 17A] FIG 17A is a diagram showing a fifth example of the first coil and the first support member.
[Figure 17B] Figure 17B is a diagram showing a fifth example of the second coil and the second support member.
[18] FIG 18 is a diagram showing an example of a configuration for switching a connection between the first coil and the second coil.
[FIG. 19A] FIG 19A is a diagram showing a first example of an electric circuit inductance adjusting device is applied.
[FIG. 19B] FIG 19B is a diagram showing a second example of an electrical circuit inductance adjusting device is applied.
[Figure 19C] FIG 19C is a diagram showing a third example of an electric circuit inductance adjusting device is applied.
[FIG. 19D] FIG 19D is a diagram showing a fourth example of an electric circuit inductance adjusting device is applied.
DESCRIPTION OF THE INVENTION
[0017]
　Hereinafter, with reference to the drawings, an embodiment of the present invention.
(First Embodiment)
　First, the first embodiment.

　FIGS. 1A and 1B are diagrams showing an example of the configuration of the inductance adjusting device of the present embodiment. Incidentally, X shown in the figures, Y, Z-coordinate shows the orientation relationship in each figure. ○ those ● is indicated in indicates a direction toward the front side from the plane of the back side. ○ those × are shown in indicates the direction toward the back side from the front side of the sheet.
[0018]
　Figure 1A is a diagram showing an example of the configuration of the inductance adjusting device of the present embodiment. Figure 1B is a diagram showing an example of a state of a surface power supply terminals 7a ~ 7d of the inductance adjusting device of FIG. 1A are arranged.
[0019]
　Inductance adjustment device includes a first coil 1, a first supporting member 2, and the second coil 3, and the second support member 4, the central axis 5, the driving device 6, power supply terminals 7a ~ 7d When having a water supply terminals 8a ~ 8d, and a housing 9. In Figure 1A, it is shown with a perspective of the housing 9. Incidentally, the inductance adjustment apparatus of the present embodiment has no core to adjust the inductance.
[0020]
　Figure 2A is a diagram showing a first example of a coil 1 and the first support member 2. Figure 2B is a diagram showing an example of the second coil 3 and the second support member 4. Figure 3A is a first coil 1 of a certain state, a diagram illustrating overlapping the first coil 1 in a state of 180 ° rotation of the central shaft 5 as the pivot axis from the state. In Figure 3A, for convenience of notation, it shows one of the first coil 1 of the two by a solid line, shows the other by broken lines. 3B is a second coil 3 of a certain state, a diagram illustrating overlapping the second coil 3 in a state of 180 ° rotation of the central shaft 5 as the pivot axis from the state. Also in FIG. 3B, similarly to FIG. 3A, for convenience of notation, shows one of the two second coil 3 by a solid line, it shows the other by broken lines. Although the second coil 3 does not rotate as described below, in Figure 3B, it is assumed that the second coil 3 is rotated.
[0021]
　2A and 3A, in FIG. 1A, a diagram of the first of the second support member 4 and the opposing surfaces of the support member 2 as seen along the Z-axis. 2B and 3B, in FIG. 1A, a diagram of the first support member 2 and the opposing surfaces of the second support member 4 as seen along the Z-axis. Note that in FIGS. 2A and 2B, an arrow line shown in the first coil 1 and the second coil 3 is the direction of the alternating current at the same time. The orientation of the alternating current flowing in the first coil 1 and the second coil 3 will be described later with reference to FIG.
[0022]
　First, a description first of the coil 1 and the first support member 2.
　The first support member 2 is a member for supporting the first coil 1. The first coil 1 is attached to the first support member 2 is fixed on the first support member 2. As shown in FIG. 2A, the first support member 2 holes 2a to as the first coil 1 is attached, 2b are formed.
[0023]
　As shown in FIG. 2A, the planar shape of the first support member 2 is circular. The first support member 2 has a strength first Z-axis direction position of the coil 1 can support the first coil 1 so as not to be changed, and is formed of an insulating material and non-magnetic that. The first support member 2 is formed, for example, by using a thermosetting resin.
[0024]
　As shown in FIG. 2A, the first center of the support member 2 is a hole 2c for the attachment to the central axis 5 of the first support member 2 is formed. By passing the center axis 5 into the hole 2c, the first supporting member 2 is attached to the central shaft 5 so that the central axis 5 coaxial (fixed), rotating with the rotation of the central shaft 5 to. The first coil 1 is supported by the first support member 2. That is, the first coil 1 is fixed on the first support member 2. Therefore, the first coil 1 is rotated along with the first rotation of the support member 2. Thus, the first coil 1 and the rotation axis and the center axis 5 is arranged to be coaxial.
[0025]
　2A, the first coil 1, a first circumferential portion 1a, a second circumferential portion 1b, a first connecting portion 1c, a first lead portion 1d, and a second lead portion 1e having. The first circumferential portion 1a, a second circumferential portion 1b, the first connecting portion 1c, the first lead-out portion 1d, and the second lead portion 1e are integral.
[0026]
　In the present embodiment, the first number of turns of the coil 1 is 1 [time]. Further, in the present embodiment, the first circumferential portion 1a, will be described as an example when the shape of the figure eight of the Arabic numerals is formed by the second circumferential portion 1b and the first connecting portion 1c,. Note omitted, FIG. 3A, for convenience of notation, the illustration of the first lead portion 1d and the and the second lead portion 1e. Further, in FIG. 3A, overlapping reference numeral for each of the two first coil 1 showing.
[0027]
　The first circumferential portion 1a is a portion for circulating so as to surround a region of the inside. The second circumferential portion 1b is also a part orbiting so as to surround a region of the inside. The first circumferential portion 1a and a second circumferential portion 1b is arranged on the same horizontal plane (X-Y plane).
　First connecting portion 1c has a first end 1f of the first circumferential portion 1a, a first portion for connecting the end 1g mutually the second circumferential portion 1b, in part not circling is there.
[0028]
　First lead portion 1d is connected to the second end 1h of the first circumferential portion 1a. Second end 1h of the first circumferential portion 1a is in the position of the hole 2b. Second lead portion 1e is connected to the second end 1i of the second circumferential portion 1b. Second end 1i of the second circumferential portion 1b is in the position of the hole 2a.
[0029]
　First lead portion 1d and the second lead portion 1e is a lead wire for connecting the first coil 1 and the outside. In Figure 2A, the shows a first lead-out portion 1d and the second lead portion 1e by a broken line, the first lead-out portion 1d and the second lead portion 1e is, the first support member shown in FIG. 2A the second surface indicate that the surface of the opposite side.
[0030]
　In Figure 3A, the first coil 1 from the state shown by the solid line, when 180 ° rotation of the central shaft 5 as a rotation axis, the state shown by the broken line.
　Central shaft 5 is disposed in the hole 2c. Thus, the central shaft 5 is disposed at a position including the center 1j of the first circumferential portion 1a, an intermediate position between the center 1k of the second circumferential portion 1b. The first circumferential portion 1a and a second circumferential portion 1b is on the opposite positions through a hole 2c (the central axis 5). That is, the first circumferential portion 1a and a second circumferential portion 1b is first coil 1 is arranged so as to keep the state in which the angle is shifted 180 ° in the direction to rotate. This angle is the center of the hole 2c (the axis of the central shaft 5), and a virtual straight line connecting the shortest distance between the center 1j of the first circumferential portion 1a of one another, a hole 2c center (the center axis 5 and axial), which is the angle between the virtual straight line connecting the shortest distance between the center 1k of the second circumferential portion 1b to each other. Note that in FIG 3A, the center 1j of the first circumferential portion 1a, the center 1k of the second circumferential portion 1b is a point showing in phantom, not that actually exists.
[0031]
　The first circumferential portion 1a, a second circumferential portion 1b, the shape and size of the third circumferential portion 3a, and the fourth circumferential portion 3b is most preferably a completely identical. However, as shown in FIGS. 2A and 2B, the first circumferential portion 1a, a second circumferential portion 1b, the third circumferential portion 3a, and a fourth completely same shape and size of the rotational portion 3b there is a case that can not be.
[0032]
　When an alternating current flows in the first coil 1 and the second coil 3, the first circumferential portion 1a, a second circumferential portion 1b, each of the third circumferential portion 3a and the fourth circumferential portion 3b, flux state penetrating the interior of the first circumferential portion 1a, a second circumferential portion 1b, and when the shape and size of the third circumferential portion 3a, and the fourth circumferential portion 3b is exactly the same if significantly different, the first circumferential portion 1a, a second circumferential portion 1b, the shape and size of the third circumferential portion 3a, and the fourth circumferential portion 3b may not be exactly the same.
[0033]
　The present inventors have for various inductance adjusting device including an inductance adjustment apparatus of the first to fifth embodiments, the size of the first coil and the second coil, the first coil and the second coil gap (distance in the Z-axis direction), the shape of the first coil and the second coil change was measured variable magnification beta. However, the first circumferential portion, a second circumferential portion, a third circumferential section, and the shape and size of the fourth circumferential section was completely the same. As a result, the range of variable magnification β is about 2.3 to 5.6 times. Range of the coupling coefficient k corresponding to this range is about 0.4-0.7. Incidentally, the coupling coefficient k is expressed by later-described equation (2). Therefore, as the value of the standard coupling coefficient ks between the first coil and the second coil, adopting the average value of the range (= 0.55 (= (0.4 + 0.7) ÷ 2)). The standard coupling coefficient ks is first circumferential portion, and a second circumferential section, a representative value of the third circumferential portion, and the fourth shape and size and coupling coefficient when exactly the same rounding part of Become.
[0034]
　Here, it is assumed that the minimum value βmin of the variable magnification β as seen from the AC power supply circuit of the combined inductance GL and 2.0. Variable magnification β as seen from the AC power supply circuit of the combined inductance GL is represented by later-described (4). Substituting minimum βmin of the variable magnification β a (= 2.0) to (4), a minimum value kmin of the coupling coefficient between the first coil and the second coil is about 0.33. The minimum value kmin of the coupling coefficient (= 0.33), divided by standard coupling coefficient ks (= 0.55), of 0.6 (= 0.33 / 0.55). In other words, to ensure the minimum value of the variable magnification β βmin (= 2.0) is 0.33 is required as a minimum value kmin of the coupling coefficient. To achieve the 0.33 as the minimum value kmin of the coupling coefficient, the first circumferential portion, a second circumferential portion, a third circumferential section, and the shape and size of the fourth circumferential section thereof it may be the same in 60% of the portion of the total length. Further, practically, minimum βmin of the variable magnification β is 2.5 is preferred, 3.0 is more preferable. To accommodate this, the results of similar calculation to that described above, the first circumferential portion, a second circumferential portion, a third circumferential section, and the shape and size of the fourth circumferential section, It is preferably the same in 78% of the portion of their entire length, and more preferably the same in 91% or more areas.
[0035]
　In view of the above, the first circumferential portion 1a, a second circumferential portion 1b, the shape and size of the third circumferential portion 3a and the fourth circumferential portion 3b, is 60% or more portions of their entire length if so, the first circumferential portion 1a, the shape and size of the second circumferential portion 1b, the third circumferential portion 3a and the fourth circumferential portion 3b, can be regarded as the same. However, in the above description, in accordance with the minimum βmin of the variable magnification beta, it is 60%, preferably 78%, more preferably 91%.
[0036]
　Therefore, relates the shape and size of the first circumferential portion 1a and a second circumferential portion 1b, the following can be said.
　When the first coil 1 is 180 ° rotating the central shaft 5 as a rotation axis, 60% of the length of the portion of the total length of the first circumferential portion 1a, a second before the rotation It overlaps that there is rounding part 1b region. The total length of the first circumferential portion 1a is the length from the first end 1f of the first circumferential portion 1a to a second end 1h.
[0037]
　In Figure 3A, when the made from the state shown by the solid line to the state shown by the broken line, the first 60% of the length of the portion of the total length of the lap portion 1a shown in the lower by a broken line in FIG. 3A, lower by a solid line It overlaps with the second circumferential portion 1b shown in side.
[0038]
　Further, when the first coil 1 is 180 ° rotating the central shaft 5 as a rotation axis, is 60% of the length of the portion of the total length of the second circumferential portion 1b, a prior to the rotation It overlaps with a region of 1 lap portion 1a. The total length of the second circumferential portion 1b is the length from the first end 1g of the second circumferential portion 1b to a second end 1i.
[0039]
　In Figure 3A, when the made from the state shown by the solid line to the state shown by the broken line, is 60% of the length of the portion of the total length of the second circumferential portion 1b shown in the upper by a broken line in FIG. 3A, the upper side by a solid line overlapping with the first circumferential portion 1a shown.
　As described above, in the above description, in accordance with the minimum βmin of the variable magnification beta, it is 60%, preferably 78%, more preferably 91%.
[0040]
　Next, a description will be given of the second coil 3 and the second support member 4.
　Second support member 4 is a member for supporting the second coil 3. The second coil 3 is attached to the second support member 4, it is fixed on the second supporting member 4. As shown in FIG. 2B, the second supporting member 4 hole 4a for so that the second coil 3 is attached, 4b are formed.
[0041]
　As shown in Figure 2B, the planar shape of the second support member 4 is rectangular. Second support member 4 has a strength which Z-axis direction position of the second coil 3 can support the second coil 3 so as not to change, and is formed of an insulating material and non-magnetic that. Second support member 4 is formed, for example, by using a thermosetting resin.
[0042]
　As shown in FIG. 1A, a second support member 4 is attached to the housing 9 so that the central axis 5 coaxial with and fixed to the housing 9. As shown in Figure 2B, the center of the second support member 4 hole 4c to as the second supporting member 4 is arranged in the central shaft 5 and coaxially formed. As shown in FIG. 1A, when through the center axis 5 into the hole 4c, the second supporting member 4 so as to have a central axis 5 and spacing, the holes 4c are formed. By doing so, the second support member 4 also has a central axis 5 by pivoting without rotating, in a state of being fixed to the casing 9.
[0043]
　2B, the second coil 3, a third circumferential portion 3a, and a fourth circumferential portion 3b, a second connecting part 3c, a third lead portion 3d, and the fourth lead portion 3e having. The third circumferential portion 3a, the fourth circumferential portion 3b, the second connecting portion 3c, the third lead portions 3d and fourth lead portion 3e, is an integral.
[0044]
　In the present embodiment, the number of turns of the second coil 3 is 1 [time]. Further, in the present embodiment, the third circumferential portion 3a, will be described as an example when the fourth circumferential portion 3b, which and the second connecting part 3c the shape of a figure eight of the Arabic numerals is formed. Note omitted, FIG. 3B, for convenience of notation, the illustration of the third lead portion 3d and and fourth lead portion 3e. Further, in FIG. 3B, superimposed reference numeral for each of the two second coil 3 showing.
[0045]
　The third circumferential portion 3a is a portion orbiting so as to surround a region of the inside. The fourth circumferential portion 3b is also a part orbiting so as to surround a region of the inside. A third rounding part 3a fourth circumferential portion 3b is disposed in the same horizontal plane (X-Y plane).
[0046]
　The second connecting portion 3c includes a first end 3f of the third circumferential portion 3a, a first portion for connecting the end 3g mutually the fourth circumferential portion 3b, the portion that is not circling is there.
[0047]
　Third lead portion 3d is connected to the second end 3h of the third circumferential portion 3a. The second end 3h of the third circumferential portion 3a is in the position of the hole 4a. Fourth lead portion 3e is connected to the second end 3i of the fourth circumferential portion 3b. Second end 3i of the fourth circumferential portion 3b is in the position of the hole 4b.
[0048]
　Third lead portion 3d and the fourth lead portion 3e is a lead wire for connecting the second coil 3 and the outside. In Figure 2B, the shows a third lead portions 3d and fourth lead portion 3e by a broken line, the third lead portions 3d and fourth lead portion 3e is, the second support member shown in FIG. 2B the fourth surface indicating that on the opposite side.
[0049]
　In this embodiment as described above, the second coil 3 does not rotate. However, in FIG. 3B, it is assumed that the second coil 3, to rotate the center shaft 5 as a rotation axis. Then, the second coil 3 from the state shown by the solid line, and 180 ° rotation of the central shaft 5 as a rotation axis, the state shown by the broken line.
[0050]
　Central shaft 5 is disposed in the hole 4c. Thus, the central shaft 5 is disposed at a position including the center 3j of the third circumferential portion 3a, an intermediate position between the center 3k of the fourth circumferential portion 3b. The third circumferential portion 3a and the fourth circumferential portion 3b is in the opposite position via the hole 4c (center axis 5). That is, the third circumferential portion 3a and the fourth circumferential portion 3b, the first coil 1 is arranged so as to keep the state in which the angle is shifted 180 ° in the direction to rotate. This angle is the center of the hole 4c (the axis of the central shaft 5), and a virtual straight line connecting with each other the shortest distance between the center 3j of the third circumferential portion 3a, the hole 4c center (the center axis 5 and axial), which is the angle between the virtual straight line connecting the shortest distance between the center 3k of the fourth circumferential portion 3b to each other. Incidentally, in FIG. 3B, the center 3j of the third circumferential portion 3a, the center 3k of the fourth circumferential portion 3b is the point showing in phantom, not that actually exists.
[0051]
　As described above, the central shaft 5, the center 1j of the first circumferential portion 1a, a position including the intermediate position between the center 1k of the second circumferential portion 1b, the center 3j of the third circumferential portion 3a It is disposed at a position and comprising an intermediate position between the center 3k of the fourth circumferential portion 3b. Thus, the central shaft 5, the center 1j of the first circumferential portion 1a, a middle position between the center 1k of the second circumferential portion 1b, the center 3j of the third circumferential portion 3a, the fourth circumferential section passing through the intermediate position between 3b center 3k of. In the example shown in FIG. 1A, the central shaft 5 extends in the Z-axis direction.
[0052]
　Also relates to the shape and size of the third circumferential portion 3a and the fourth rounding part 3b, the following can be said.
　When the second coil 3 is assumed to 180 ° rotation of the central shaft 5 as a rotation axis, is 60% of the length of the portion of the overall length of the third circumferential portion 3a, a prior to the rotation overlaps with a region is 4 rounding part 3b. The total length of the third circumferential portion 3a is the length from the first end 3f of the third circumferential portion 3a to a second end 3h.
[0053]
　In Figure 3B, assuming made from the state shown by the solid line to the state shown by the broken line, the third 60% of the length of the portion of the total length of the circumferential portion 3a of the shown upper in broken lines in FIG. 3B, the upper by a solid line It overlaps with the fourth circumferential portion 3b shown in.
[0054]
　Furthermore, assuming that the second coil 3 is 180 ° rotating the central shaft 5 as a rotation axis, is 60% of the length of the portion of the total length of the fourth circumferential portion 3b, prior to the rotation It overlaps with the third circumferential portion 3a there was region. The total length of the fourth circumferential portion 3b is the length from the first end 3g of the fourth circumferential portion 3b to a second end 3i.
[0055]
　In Figure 3B, when the made from the state shown by the solid line to the state shown by the broken line, the fourth 60% of the length of the portion of the total length of the circumferential portion 3b of the shown lower in broken lines in FIG. 3B, lower by a solid line It overlaps with the third circumferential portion 3a shown in side.
　In the above description, in accordance with the minimum βmin of the variable magnification beta, it is 60%, preferably 78%, more preferably 91%.
[0056]
　Next, a description will be given positional relationship between the first coil 1 and the second coil 3.
　Figure 4 is a diagram showing an example of the positional relationship between the first coil 1 and the second coil 3. At the top of FIG. 4 shows the first coil 1 when the combined inductance GL by the first coil 1 and the second coil 3 becomes minimum arrangement of the second coil 3. At the bottom of FIG. 4 shows the first coil 1 when the combined inductance GL by the first coil 1 and the second coil 3 becomes maximum placement of the second coil 3. Figure in the middle of the 4, the first coil 1 and the second coil when the first coil 1 and the combined inductance GL of the second coil 3 is in an intermediate value (value below the maximum value exceeds the minimum value) It shows a three-arrangement.
[0057]
　4, for convenience of notation, shows the first coil 1 by a solid line shows the second coil 3 in broken lines. Further, in FIG. 4, solid line arrows indicated by a broken line, respectively, showing a first coil 1, (when viewed from the same direction at the same time) of the alternating current flowing in the second coil 3 orientation.
[0058]
　The state shown at the bottom of FIG. 4 to the first state. Further, the state shown at the top of FIG. 4 and the second state.
　As shown at the bottom of FIG. 4, first state, the first first circumferential portion 1a of the coil 1, the position where the third circulation portion 3a of the second coil 3 are opposed to each other in there, and a first second circumferential portion 1b of the coil 1, and the fourth circumferential portion 3b of the second coil 3 is in a state which is positioned to face each other.
[0059]
　As it is shown at the top of FIG. 4, the second state, the first first circumferential portion 1a of the coil 1, a position where the fourth circumferential portion 3b of the second coil 3 are opposed to each other in there, and a first second circumferential portion 1b of the coil 1, and a third circumferential portion 3a of the second coil 3 is in a state which is positioned to face each other.
[0060]
　Here, the shape and size of the first circumferential portion 1a and the second circumferential portion 1b, relates the shape and size of the third circumferential portion 3a and the fourth circumferential portion 3b, the following can be said.
[0061]
　In the first state shown in the bottom of FIG. 4, when viewed from a direction (Z axis direction) along the first coil 1 and the second coil 3 to the central axis 5, the first circumferential portion 1a and 60% of the length of the portion of the total length, and more than 60% of the length of the portion of the overall length of the third circumferential portion 3a overlap one another. Further, in the first state, when viewed from a direction (Z axis direction) along the first coil 1 and the second coil 3 to the central axis 5, more than 60% of the total length of the second circumferential portion 1b the length of the part, and more than 60% of the length of the portion of the total length of the fourth circumferential portion 3b overlaps the other.
[0062]
　When in the second state shown at the top of FIG. 4 viewed from the first coil 1 and a second direction along the coil 3 to the central axis 5 (Z-axis direction), the overall length of the first circumferential portion 1a and 60% of the length of the portion of the 60% of the length of the portion of the total length of the fourth circumferential portion 3b overlaps the other. Also, when viewing the first coil 1 and the second coil 3 in the direction along the central axis 5 (Z-axis direction) in the second state, more than 60% of the length of the total length of the second circumferential portion 1b and the portions, and more than 60% of the length of the portion of the overall length of the third circumferential portion 3a overlap one another.
　In the above description, in accordance with the minimum βmin of the variable magnification beta, it is 60%, preferably 78%, more preferably 91%.
[0063]
　Here, the length of the first connecting portion 1c and the second connecting portion 3c includes a first circumferential portion 1a, a second circumferential portion 1b, the third circumferential portion 3a, and a fourth circumferential portion 3b shorter than the length. Accordingly, the first coil 1 (the first circumferential portion 1a, a second circumferential portion 1b, and the first connecting portion 1c) and the second coil 3 (the third circumferential portion 3a, the fourth circumferential portion 3b , and the shape and size of the second connecting portion 3c) is more than 60% of their total length (preferably 78% or more, substantial differences as more preferably the same in part of more than 91%) Absent. Accordingly, in the above description, the first circumferential portion 1a, a second circumferential portion 1b, instead of the third circumferential portion 3a, and the shape and size of the fourth circumferential portion of the first coil 1 (the 1 rounding part 1a, a second circumferential portion 1b, and the first connecting portion 1c) and the second coil 3 (the third circumferential portion 3a, the fourth circumferential portion 3b, and the second connecting portion 3c) in the shapes and sizes may be provisions described above.
[0064]
　Next, a description will be given members constituting the first coil 1 and the second coil 3.
　In the present embodiment, the first coil 1 and the second coil 3 is formed by using a water-cooled cable. Water cooled cables, for example, a hose, and a wire that has been passed into the hose. Hose both assumed to have a flexible wire. Accordingly, the first coil 1 and the second coil 3 also has flexibility. Incidentally, the hose is comprised of an insulating material. Further, the wire can also be constituted by one, it may be constituted of a plurality of lines. When configuring the wire in plural, for example, it can be a wire as Litz wire.
[0065]
　Next, explaining the arrangement of the first coil 1 and the second coil 3 in the inductance adjustment apparatus.
　In the present embodiment, as shown in FIG. 1A, when the first coil 1 and the second coil 3 is arranged, the coil plane of the first coil 1 and the second coil 3, a predetermined distance G to be parallel in a state that has been. The size of the gap G is, for example, can be set according to the maximum value or the like that can be changed inductance inductance adjusting device. The first coil plane of the coil 1, a horizontal plane (X-Y plane) in the region surrounded by the first circumferential portion 1a and the second circumferential portion 1b. The coil plane of the second coil 3, a horizontal plane (X-Y plane) in the region surrounded by the third circumferential portion 3a and the fourth circumferential portion 3b.
[0066]
　The central shaft 5 as described above, is intended for rotating the first coil 1. Central shaft 5 is pivotally attached to the housing 9 via a bearing or the like. Driving device 6 is a drive source for rotating the central shaft 5, a motor or the like.
[0067]
　Next, a description will be given connection of the first coil 1 and the second coil 3.
　Power supply terminals 7a ~ 7d is an AC power supplied from an AC power supply circuit (not shown), a terminal for supplying the first coil 1 and the second coil 3. As shown in FIGS. 1A and 1B, the feeding terminals 7a ~ 7d, the area of the distal end side so as to expose, attached to the housing 9 (fixed).
[0068]
　In the present embodiment, among the first end portions of the coil 1, one end portion drawn from the first support member 2 of the hole 2a (second end 1i of the second circumferential portion 1b) is to the power supply terminal 7a It is connected. On the other hand, of the first end portions of the coil 1, the other end portion drawn from the first support member 2 of the holes 2b (second end 1h of the first circumferential portion 1a) is connected to the feed terminal 7d .
[0069]
　Further, of the two ends of the second coil 3, one end portion drawn from the hole 4a of the second support member 4 (the second end 3h of the third circumferential portion 3a) is connected to the feed terminal 7b . On the other hand, of the two ends of the second coil 3, the other end portion drawn from the second supporting member 4 of the hole 4b (second end 3i of the fourth circumferential portion 3b) is connected to the power supply terminal 7c that.
[0070]
　AC power supply circuit, not shown, power supply terminals 7a, are electrically connected to 7c. Moreover, the feed terminal 7b, 7d are electrically connected to each other.
　By the above, the first coil 1 and the second coil 3 are connected in series. That is, alternating current supplied from the AC power supply circuit is "AC power supply circuit → feeding terminal 7a → the first coil 1 → feeding terminal 7d → feed terminal 7b → the second coil 3 → feeding terminal 7c → AC power supply circuit" flowing the path, and a path of "AC power supply circuit → feeding terminal 7c → the second coil 3 → feed terminal 7b → feeding terminal 7d → first coil 1 → power supply terminal 7a → AC power supply circuit" alternately.
[0071]
　As shown in FIG. 2A, seen from the first of the first circumferential portion 1a and the second (the same direction of the central axis (the same time) to 5 side straight portion of the flowing alternating current in the circulating portion 1b of the coil 1 was) facing case is the same (see arrow lines that are subjected to the first coil 1 of FIG. 2A). Similarly, as shown in FIG. 2B, the linear part of the central axis 5 of the second of the third circumferential portion 3a and the fourth circumferential portion 3b of the coil 3 (the same time) flows of alternating current (identical ) orientation when viewed from the direction is the same (see arrow lines that are subjected to the second coil 3 in FIG. 2B).
[0072]
　Power supply terminals 7a ~ 7d has a cavity. Upon connecting the first coil 1 and the second coil 3 to the power supply terminal 7a ~ 7d as above, the inside of the hose which constitutes the this cavity, the first coil 1 and the second coil 3 but communicate with each other.
[0073]
　Water terminals 8a ~ 8d is a cooling water supplied using a pump or the like (not shown), a terminal for supplying the first coil 1 and the second coil 3. Note that the first coil 1 and the second coil 3 is that the interior of the hose which constitutes the first coil 1 and the second coil 3. Water terminals 8a ~ 8d has a cavity. As the cavity feed terminal 7a ~ 7d and the cavity portion of the water supply terminals 8a ~ 8d communicates with each other, the water supply terminals 8a ~ 8d are exposed from the respective power supply terminals 7a ~ 7d of the tip-side region (housing 9 It mounted on to that region).
[0074]
　Water terminal 8b, 8d are connected to each other by a hose (not shown). On the other hand, the water supply terminal 8a, the 8c, not shown hose for supplying cooling water are mounted respectively. Cooling water, the water supply terminals 8a, through a hose attached to 8c, flows in and out relative to the water supply terminals 8a, 8c.
[0075]
　By the way, it is possible to form the flow path of the cooling water to the first coil 1 and the second coil 3. Therefore, it is possible to cool the first coil 1 and the second coil 3, a large current can be passed to the first coil 1 and the second coil 3. For example, 100 [A] or more current can preferably flow 500 [A] or more current in the first coil 1 and the second coil 3.
[0076]

　Next, FIG. 4, 5A, 5B, 6A, with reference to FIG. 6B, for explaining an example of the inductance adjusting method of the inductance adjusting device. Inductance in the inductance adjustment apparatus is a combined inductance GL by the first coil 1 and the second coil 3. The first coil 1 and the combined inductance GL of the second coil 3 is assumed to be an inductance when viewed from the AC power supply circuit described above. In the following description, the first coil 1 and a combined inductance GL of the second coil 3, if necessary, abbreviated as combined inductance GL.
[0077]
　5A, 5B, 6A, 6B are diagrams showing an example of a magnetic flux in a direction caused by flowing the first coil 1 and an alternating current to the second coil 3. Figure 5A, FIG. 5B, showing the orientation of the magnetic flux with a first coil 1 and the second circuit symbol showing the coil 3. Figure 6A, 6B, the illustrating the orientation of the magnetic flux with the first coil 1 in a state of being arranged in the inductance adjustment apparatus the second coil 3.
[0078]
　Figure 5A, Figure 6A is a diagram illustrating the orientation of the magnetic flux when combined inductance GL becomes a minimum value. Figure 5B, Figure 6B is a diagram showing the direction of the magnetic flux when combined inductance GL becomes the maximum value.
[0079]
　5A and 5B, a first arrow coil 1 and are given to the second coil 3, illustrating the orientation of the alternating current. Further, arrows penetrating the first coil 1 and the second coil 3, illustrating the orientation of the magnetic flux. 6A and 6B, in the ○ ●, is what is the illustrated ×, showing the orientation of the alternating current. ○ those ● is indicated in indicates a direction toward the front side from the plane of the back side, what has been shown × in ○, the direction toward the back side from the front side of the sheet show. Also, the arrows indicated by broken lines in FIG. 6A, loop shown by the solid line with arrows in Fig. 6B illustrates the direction of the magnetic flux.
[0080]
　In the second state shown at the top of FIG. 4, a fourth circumferential portion 3b of the first first circumferential portion 1a and a second coil 3 of the coil 1 is opposed to each other, the first coil the second circumferential portion 1b of the 1 and the third circumferential portion 3a of the second coil 3 are opposed to each other. Then, the direction of the alternating current flowing through the fourth circumferential portion 3b of the first first circumferential portion 1a and a second coil 3 of the coil 1 is opposite. Similarly, the direction of the AC current flowing in the first third of the circumferential portion 3a of the second circumferential portion 1b and the second coil 3 of the coil 1 is opposite.
[0081]
　Accordingly, as shown in FIG. 5A, the magnetic flux generated from the first coil 1 and the second coil 3 is weaken each other. The combined inductance GL case, the first self-inductance of the coil 1 L1, the self inductance L2 of the second coil 3, the mutual inductance of the first coil 1 and the second coil 3 is M, or less represented by the equation (1).
　GL = L1 + L2-2M ··· (1 )
[0082]
　(1) Synthesis inductance GL of the formula becomes the minimum value of the combined inductance GL.
　Here, the mutual inductance M of the first coil 1 and the second coil 3, when the coupling coefficient between the first coil 1 and the second coil 3 and k, is expressed by the following equation (2) .
　M = ± k√ (L1 · L2 ) ··· (2)
　the coupling coefficient k, the shape of the first coil 1 and the second coil 3, the size, which is determined by the relative positions, 0 ≦ k ≦ one relationship. k = 1 is the value of the coupling coefficient k is less than 1 because the leakage magnetic flux is generated in the actually it is when there is no leakage flux.
　At this time, magnetic flux generated by supplying an alternating current to the first coil 1 and the second coil 3 is as shown in Figure 6A.
[0083]
　First state shown in the bottom of Figure 4, from the second state shown at the top of FIG. 4, a state in which the first coil 1 was 180 ° rotation. In the first state, and a third circumferential portion 3a of the first first circumferential portion 1a and a second coil 3 of the coil 1 is opposed to each other, a second circumferential portion of the first coil 1 a fourth circumferential portion 3b of the 1b and the second coil 3 are opposed to each other. Then, the direction of the alternating current flowing through the first first circumferential portion 1a and a second third circumferential portion 3a of the coil 3 of the coil 1 are the same. Similarly, the direction of the alternating current flowing through the fourth circumferential portion 3b of the first second circumferential portion 1b and the second coil 3 of the coil 1 are the same direction.
[0084]
　Accordingly, as shown in Figure 5B, the magnetic flux generated from the first coil 1 and the second coil 3 is constructive to each other. Combined inductance GL in this case is expressed by the following equation (3).
　= L1 + GL L2 + 2M · · ·
　(3) (3) Synthesis inductance GL of the formula becomes the maximum value of the combined inductance GL.
[0085]
　As described above, the second state shown at the top of FIG. 4, the first coil 1 is 180 ° rotated, the first state shown in the bottom of FIG. By rotating the first coil 1, or can be reversed or the direction to the same AC current flowing in the first coil 1 and the second coil 3.
[0086]
　Therefore, when the first rotation angle of the coil 1 of the second state shown at the top of FIG. 4 and 0 °, to the first rotating coil 1 in the range of 0 ° ~ 180 ° lever, the combined inductance GL can be varied from a minimum value to a maximum value. Therefore, in the present embodiment, the driving device 6, it is assumed to be the first rotating coil 1 in the range of 0 ° ~ 180 °. Unless otherwise specified, also first rotation angle of the coil 1 shown below, and 0 ° a first rotation angle of the coil 1 of the second state shown at the top of FIG. 4 It assumed to be the angle in the case of.
[0087]
　State shown in the middle of FIG. 4 is a state between the state shown in the bottom of the state and 4 shown at the top of FIG. Thus, the combined inductance GL in this state indicates a value between the minimum value indicated by the maximum value (1) shown in equation (3). This value is determined according to the first rotation angle of the coil 1.
　In the present embodiment, by changing the way the first total inductance GL by the coil 1 is rotated, it is possible to adjust the inductance of the electric circuit inductance adjusting device is connected online.
[0088]
　When changing continuously between the first rotation angle 0 ° ~ 180 ° of the coil 1, the variable magnification β as seen from the AC power supply circuit of the combined inductance GL, a first rotation angle of the coil 1 is 180 ° the combined inductance GL in the case of a first rotation angle of the coil 1 is expressed by a value obtained by dividing the combined inductance GL in the case of 0 °. Therefore, the variable magnification β as seen from the AC power supply circuit of the combined inductance GL, is expressed by the following equation (4).
　β = (2L + 2M) ÷ (2L-2M) = (2L + 2kL) ÷ (2L-2kL) = (1 + k) ÷ (1-k) ··· (4)
[0089]
　However, here, for simplicity of explanation, the first coil 1 and the self-inductance L1, L2 of the second coil 3 and L (L1 = L2 = L) . In this case, the coupling coefficient k between the first coil 1 and the second coil 3 is expressed by the following equation (5).
　M = ± k√ (L1 · L2 ) = ± k√ (L · L) = ± kL ··· (5)
[0090]
　For example, assuming that the k = 0.5, the variable magnification beta viewed from the AC power supply circuit of the combined inductance GL, tripled (β = (1 + 0.5) ÷ (1-0.5) = 3) Become. For example, if k = 0.5 times or more, the variable magnification β as seen from the AC power supply circuit of the combined inductance GL can be 3 or more. By increasing the coupling coefficient k between the first coil 1 and the second coil 3, it is possible to increase the variable magnification β as seen from the AC power supply circuit of the combined inductance GL. Thus, as the coupling coefficient k between the first coil 1 and the second coil 3 is increased, the shape of the first coil 1 and the second coil 3, the size, that determines the relative position preferred.
[0091]
　As described above, in the present embodiment, as described, by rotating the first coil 1, to adjust the combined inductance GL. Therefore, as in the technique described in Patent Document 1, the need to change the occupancy of the magnetic material in the solenoid coil, there is no need to stretch the coil as in the technique described in Patent Document 2. Therefore, with the structure of the inductance adjusting apparatus can be simplified, can be made compact inductance adjusting device. Thus, leading to a reduction in the cost of the inductance adjusting device.
[0092]
　Further, as described above, the coil plane of the first coil 1 and the second coil 3 are parallel. Further, the first coil 1 (the first circumferential portion 1a and a second circumferential portion 1b), the second coil 3 (the third circumferential portion 3a and the fourth circumferential portion 3b), respectively central axes 5 will be disposed in the opposite side (the two symmetrical positions) through. The first circumferential portion 1a, a second circumferential portion 1b, the size and shape of the third circulating portion 3a, and the fourth circumferential portion 3b is the same. Therefore, a large current flows to the first coil 1 and the second coil 3, even if the suction force or repulsive force between the first coil 1 and the second coil 3 is caused, the first both sides of the coil 1 de (first circumferential portion 1a side and the second circumferential portion 1b side), and both sides of the second coil 3 (the third circumferential portion 3a side, and the fourth circumferential portion 3b side of), repulsion described above the balance of force or suction force can be taken. Therefore, compared with the case of a structure for supporting the coil end as described in Patent Document 3, it is possible to easily suppress the movement coil repulsive force and attractive force as described above. Therefore, the first support member 2, the second support member 4, as the position of the Z-axis direction is not displaced as much as possible, we have the strength to support the first coil 1, the second coil 3 it is sufficient that. Therefore, it is possible to facilitate the intensity of the design of the first support member 2 and the second support member 4.
[0093]
　Further, in the technique described in Patent Document 3, the two coils, respectively, only one circumferential portion of the coaxial no. Thus, the rotational angle of the other coil relative to one of the coil becomes larger than 90 °, the two coils do not overlap. Therefore, the size ratio of the change in the mutual inductance of the two coils (change per unit angle) decreases. Therefore, the change in inductance is proportional to the logarithm of the rotation angle.
[0094]
　In contrast, in the present embodiment, in a first range rotation angle of the coil 1 is 0 ° ~ 90 ° in the range of 90 ° ~ 180 °, the mutual inductance of the first coil 1 and the second coil 3 the M, except codes can be varied in the same way. Therefore, the relationship between the magnitude and the first rotation angle of the coil 1 of the combined inductance GL indicates a good linear relationship than the technique described in Patent Document 3. Therefore, it is possible to control the frequency with high accuracy.
[0095]
　Figure 7A is a diagram showing an example of the relationship between the inductance and the rotation angles in the inductance adjustment apparatus of the present embodiment. Here, the inductance is a synthetic inductance GL, rotation angle is first rotation angle of the coil 1. Figure 7B is a diagram showing an example of the relationship between the inductance and the rotation angle in the technique disclosed in Patent Document 3. Here, the inductance is two combined inductance of the coil described in Patent Document 3, rotation angle, the two coils is the sum of the absolute value of an angle formed by rotating the coil end as an axis.
[0096]
　As shown in FIG. 7A, an inductance adjustment apparatus of the present embodiment, the rate of change in inductance with respect to the change in the rotation angle (i.e., inclination of the graph shown in FIG. 7A) is substantially constant irrespective of the rotation angle . In contrast, in the technique described in Patent Document 3, when the rotation angle is small, the rate of change in inductance with respect to the change of the rotation angle increases. Then, as the rotation angle increases, the proportion of change in inductance with respect to a change in the rotational angle is reduced. Therefore, in the technique described in Patent Document 3, it is not easy to adjust the inductance.
[0097]

[Modification 1]
((Modification 1-1))
　first circumferential portion, a second circumferential portion, and the shape formed by the first connecting portion 8 shaped Arabic numerals but it is not limited to. Similarly, the third circumferential portion, circumferential portion of the fourth, and the shape formed by the second connecting portion is not limited to shape of the Arabic numeral 8. For example, it may be of FIGS. 8A and 8B.
[0098]
　8A is a diagram showing a first modification of the first coil 81 and the first support member 82. Figure 8B is a diagram showing a first modification of the second coil 83 and the second support member 84. 8A is a view corresponding to FIG. 2A, FIG. 8B is a view corresponding to FIG. 2B.
[0099]
　The first support member 82 is a member for supporting the first coil 81. The first coil 81 is attached to the first support member 82 is fixed on the first support member 82. As shown in FIG. 8A, the first supporting member 82 hole 82a for such first coil 81 is attached, 82b are formed. Further, the center of the first support member 82 is a hole 82c in order to be attached to the central axis 5 of the first support member 82 is formed. The first coil 81 and the first support member 82 is rotated with the rotation of the first support member 82. The first support member 82 may be realized in the same as the first supporting member 2 shown in Figure 2A.
[0100]
　The first coil 81 has a first circumferential portion 81a, a second circumferential portion 81b, a first connecting portion 81c, and the first lead portion 81d, and a second lead portion 81e. The first circumferential portion 81a, a second circumferential portion 81b, the first connecting portion 81c, the first lead-out portion 81d, and the second lead portion 81e is an integral.
[0101]
　The first circumferential section 81a is a portion which circulates so as to surround a region of the inside. The second circumferential section 81b is also a portion that circulates so as to surround a region of the inside. The first circumferential portion 81a and the second circumferential portion 81b is disposed in the same horizontal plane (X-Y plane).
[0102]
　First connecting portion 81c has a first end 81f of the first circumferential portion 81a, a first portion for connecting an end 81g to each other of the second circumferential portion 81b, the portion that is not circling is there.
　First lead portion 81d is connected to the second end 81h of the first circumferential portion 81a. The second end 81h of the first circumferential portion 81a is in the position of the hole 82b. Second lead portion 81e is connected to the second end 81i of the second circumferential portion 81b. Second end 81i of the second circumferential section 81b is in the position of the hole 82a.
[0103]
　The second support member 84 is a member for supporting the second coil 83. The second support member 84 is attached to the housing 9 so that the central axis 5 coaxial with and fixed to the housing 9. The second coil 83 is attached to the second support member 84 is fixed on the second supporting member 84. As shown in FIG. 8B, the second supporting member 84 hole 84a for such second coil 83 is attached, 84b are formed. Further, the center of the second support member 84 is a hole 84c in order to be the second supporting member 84 is arranged in the central shaft 5 and coaxially formed. When through the center axis 5 into the hole 84c, a second supporting member 84 so as to have a central axis 5 and spacing, the holes 84c are formed. By doing so, the second support member 84 the central axis 5 be rotated in without turning, in a state of being fixed to the casing 9. The second support member 84 may be realized in the same as the second support member 4 shown in Figure 2B.
[0104]
　The second coil 83 has a third circumferential portion 83a, and a fourth circumferential portion 83 b, and a second connecting portion 83c, and the third lead portion 83d, and a fourth lead portion 83e. The third circumferential portion 83a, the fourth circumferential portion 83 b, the second connection portion 83c, the third lead portions 83d, and the fourth lead portion 83e is an integral.
[0105]
　The third circumferential portion 83a is a portion which circulates so as to surround a region of the inside. The fourth circumferential portion 83b is also a portion that circulates so as to surround a region of the inside. The third circumferential portion 83a and the fourth circumferential section 83b is disposed in the same horizontal plane (X-Y plane).
[0106]
　The second connecting portion 83c has a first end 83f of the third circumferential portion 83a, a first portion for connecting an end 83g to each other of the fourth circumferential section 83 b, with the portion not circling is there.
　Third lead portion 83d is connected to the second end 83h of the third circumferential portion 83a. The second end 83h of the third circumferential portion 83a is in the position of the hole 84a. Fourth lead portion 83e is connected to the second end 83i of the fourth circumferential section 83 b. Second end 83i of the fourth circumferential section 83b is in the position of the hole 84b.
[0107]
　The first circumferential portion, a second circumferential portion, a third circumferential section, and the outermost periphery of the contour of the shape of the fourth circumferential section, other shapes (e.g., perfect circle, ellipse, rectangle) met it may be.
[0108]
((Modification 1-2))
　and the connection of the first circumferential portion and the second circumferential portion, the third circumferential portion and the connection of the fourth circumferential section is not limited to the connection shown in FIGS. 2A and 2B . That is, the direction of the alternating current through the first circulating portion and the second circumferential portion, the direction of the alternating current flowing through the third circulating portion and the fourth circumferential section, limited to the orientation shown in FIGS. 2A and 2B not.
[0109]
　Figure 9A is a diagram showing a second modification of the first coil 91 and the first support member 92. Figure 9B is a diagram showing a second modification of the second coil 93 and the second support member 94. 9A is a view corresponding to FIG. 2A, FIG. 9B is a view corresponding to FIG. 2B.
[0110]
　The first support member 92 is a member for supporting the first coil 91. The first coil 91 is attached to the first support member 92 is fixed on the first support member 92. As shown in FIG. 9A, the first supporting member 92 hole 92a for such first coil 91 is attached, 92b are formed. Further, the center of the first support member 92 is a hole 92c in order to be attached to the central axis 5 of the first support member 92 is formed. The first coil 91 and the first support member 92 is rotated with the rotation of the first support member 92. The first support member 92 may be realized in the same as the first supporting member 2 shown in Figure 2A.
[0111]
　The first coil 91 has a first circumferential portion 91a, a second circumferential portion 91b, a first connecting portion 91c, and the first lead portion 91d, and a second lead portion 91e. The first circumferential portion 91a, a second circumferential portion 91b, the first connecting portion 91c, the first lead-out portion 91d, and the second lead portion 91e is an integral.
[0112]
　The first circumferential section 91a is a portion which circulates so as to surround a region of the inside. The second circumferential section 91b is also a portion that circulates so as to surround a region of the inside. The first circumferential portion 91a and the second circumferential portion 91b is disposed in the same horizontal plane (X-Y plane).
[0113]
　First connecting portion 91c has a first end 91f of the first circumferential portion 91a, a first portion for connecting an end 91g to each other of the second circumferential portion 91b, the portion that is not circling is there.
　First lead portion 91d is connected to the second end 91h of the first circumferential portion 91a. The second end 91h of the first circumferential portion 91a is in the position of the hole 92b. Second lead portion 91e is connected to the second end 91i of the second circumferential portion 91b. Second end 91i of the second circumferential section 91b is in the position of the hole 92a.
[0114]
　The second support member 94 is a member for supporting the second coil 93. The second support member 94 is attached to the housing 9 so that the central axis 5 coaxial (fixed). The second coil 93 is attached to the second support member 94 is fixed on the second supporting member 94. As shown in FIG. 9B, the second supporting member 94 hole 94a for such second coil 93 is attached, 94b are formed. Further, the center of the second support member 94 is a hole 94c in order to be the second supporting member 4 is arranged in the central shaft 5 and coaxially formed. When through the center axis 5 into the hole 94c, a second supporting member 94 so as to have a central axis 5 and spacing, the holes 94c are formed. By doing so, the second support member 94 the central axis 5 be rotated in without turning, in a state of being fixed to the casing 9. The second support member 94 may be realized in the same as the second support member 4 shown in Figure 2B.
[0115]
　The second coil 93 has a third circumferential portion 93a, and a fourth circumferential portion 93 b, and a second connecting portion 93c, and the third lead portion 93d, and a fourth lead portion 93e. The third circumferential portion 93a, the fourth circumferential portion 93 b, the second connection portion 93c, the third lead portions 93d, and the fourth lead portion 93e is an integral.
[0116]
　The third circumferential portion 93a is a portion which circulates so as to surround a region of the inside. The fourth circumferential portion 93b is also a portion that circulates so as to surround a region of the inside. The third circumferential portion 93a and the fourth circumferential section 93b is disposed in the same horizontal plane (X-Y plane).
[0117]
　The second connecting portion 93c has a first end 93f of the third circumferential portion 93a, a first end 93g and a portion interconnecting the fourth circumferential portion 93 b, in part not circling is there.
　Third lead portion 93d is connected to the second end 93h of the third circumferential portion 93a. The second end 93h of the third circumferential portion 93a is in the position of the hole 94a. Fourth lead portion 93e is connected to the second end 93i of the fourth circumferential section 93 b. Second end 93i of the fourth circumferential section 93b is in the position of the hole 94b.
[0118]
　Figure 2A, in the configuration shown in FIG. 2B, FIG. 2A, toward the paper surface of FIG. 2B, at the same time, the first rounding part current flows counterclockwise in 1a, the second circumferential portion 1b in the current clockwise flows, current flows through the third clockwise the circumferential portion 3a, flows to the fourth counterclockwise the circumferential portion 3b of the. Thus, the two circumferential portions (first circumferential portion 1a and a second circumferential portion 1b, the third circumferential portion 3a and the fourth circumferential portion 3b) direction of the current flowing through the are opposite.
[0119]
　In contrast, FIG. 9A, in the configuration shown in FIG. 9B, FIG. 9A, towards the plane of FIG. 9B, at the same time, current flows through the first circumferential portion 91a and the second right-handed in the circumferential portion 91b, current flows through the third circumferential portion 93a and the fourth left-handed in the circumferential portion 93 b. Thus, the two circumferential portions (first circumferential portion 91a and the second circumferential portion 91b, the third circumferential portion 93a and the fourth circumferential portion 93 b) the direction of the current flowing through the are the same direction (FIG. 9A and FIG. see arrow line shown beside the first coil 91 and second coil 93 in 9B). Figure 9A, the variable magnification β as seen from the AC power supply circuit of the combined inductance GL of the case shown in FIG. 9B, FIG. 2A, but differs from the configuration shown in FIG. 2B, the principle of changing the combined inductance GL, as shown in FIG. 2A, 2B and 9A, is the same in either configuration shown in FIG. 9B.
[0120]
[Modification 2]
　In the present embodiment, by rotating the central shaft 5, it has been described as an example a case of rotating the first coil 1 mounted on the central shaft 5. However, the first coil 1 and the at least one of the second coil 3, if so as to rotate the center shaft 5 and substantially coaxial, not limited to this.
[0121]
　For example, instead of the driving device 6, the first supporting member 2 so that the first coil 1 is rotated by the central shaft 5 and substantially coaxial may be provided a driving device for rotating. That is, the driving device may be attached to the first support member 2, rather than the central axis 5.
[0122]
　In addition to the first coil 1, the second coil 3 may be rotated. In this case, the drive device is required to rotate the second support member 4 in the center axis 5 coaxial. If to such an absolute value of the rotation angle in the first of the first direction of the coil 1 (e.g. clockwise), the second direction of the second coil 3 (the first direction opposite direction, for example the total range of the absolute value of the rotation angle in the counterclockwise) preferably to 0 ° ~ 180 ° (i.e., preferably the maximum value of the total 180 °). Thus, by rotating both the first coil 1 and the second coil 3, the first state shown in the bottom of FIG. 4, the second showing the top of FIG. 4 and state, and a state between those states can be obtained continuously.
[0123]
[Modification 3]
　In the present embodiment, the first coil 1 and the second coil 3 has been described as an example a case in which are connected in series. However, it may be connected to the first coil 1 and the second coil 3 in parallel. For example, among the first end portions of the coil 1, one end portion drawn from the first support member 2 of the hole 2a (second end 1i of the second circumferential portion 1b), both ends of the second coil 3 among parts, as well as electrically connecting one end led out from the hole 4a of the second support member 4 and a (second end 3h of the third circumferential portion 3a) to each other, the first ends of the coil 1 among parts, the other end portion drawn from the first support member 2 of the hole 2b and the (second end 1h of the first circumferential portion 1a), of the two ends of the second coil 3, a second support It may be electrically connected the other end led out from the hole 4b of the member 4 (second end 3i of the fourth circumferential portion 3b) mutually. If so, these connecting portions, AC power to be supplied from the AC power source circuit (not shown). For example, among the first ends of the coil 1, the first one end portion drawn from the holes 2a of the support member 2, of the two ends of the second coil 3, a second hole 4a of the support member 4 the one end portion drawn connected to the power supply terminal 7a, of the first end portions of the coil 1, and the other end led out from the first support member 2 of the hole 2b, at both ends of the second coil 3 among them, it is possible to the other end portion drawn from the second supporting member 4 of the hole 4b connected to the power supply terminal 7b, connecting the AC power supply circuit (not shown) feeding terminal 7a, the 7b.
[0124]
　When connecting the first coil 1 and the second coil 3 in parallel, the variable magnification beta viewed from the AC power supply circuit of the combined inductance GL, unchanged from when connecting them in series (β = (1 + k) ÷ (1-k)). On the other hand, the variable range of the combined inductance GL becomes (2L-2kL) ÷ 4 ~ (2L + 2kL) ÷ 4 = (L-kL) ÷ 2 ~ (L + kL) ÷ 2. That is, when the first coil 1 and the second coil 3 has been changed from the series circuit to the parallel circuit, the combined inductance GL becomes 1/4. However, here, for simplicity of explanation, the self-inductance L1, L2 of the first coil 1 and the second coil 3 and L.
[0125]
[Modification 4]
　In the present embodiment, by taking a case where the coil surface of the first coil 1 and the second coil 3 is set to be substantially parallel to each other in a state where a constant gap G in Example Description did. However, it is not always need to be the case, at least one of the first coil 1 and the second coil 3 by moving the Z-axis direction, it may be a gap G to the variable.
[0126]
　Figure 10 is a diagram showing a configuration of a variation of the inductance adjusting device.
　As shown in FIG. 10, as the first support member 2 is repositioned in the Z-axis direction of the central axis 5, white arrows of which the first supporting member 2 is attached to the central shaft 5 (FIG. 10 with reference to the first coil 1 and the first supporting member 2 shown in broken lines). For example, to allow the user to manually adjust the position in the Z-axis direction of the first support member 2, mounting the first support member 2 to the central axis 5. To describe an example in this way, the first support member 2 as well as to move on the center axis 5, is prepared fixture (the fixture) for fixing the first support member 2. User, the first support member 2 fixed at any position on the central axis 5 with the fixture. The drive device 6, the first support member 2 may be formed each part so that it can be moved in the Z-axis direction in addition to rotating the central shaft 5. In this case, the driving device 6, when the electric circuit inductance adjusting device is applied is operating, it is possible to move the first support member 2 in the Z-axis direction.
[0127]
[Modification 5]
　In the present embodiment, the first coil 1 and the second coil 3, has been described by way of example the case of configuring with a water-cooled cable. However, it is not necessarily need to be the case. For example, the shape of the first coil 1 and the second coil 3 using copper pipe or the like may be like a pipe. When doing so, the cooling water flows into the hollow portion of the first coil 1 and the second coil 3. Further, the lead portion of the first coil 1 and the second coil 3 (the first lead portion 1d, the second lead portion 1e, the third lead portions 3d, fourth lead portion 3e), and flexible preferably of a conductive material having a. In this case, the conductors, the first coil 1, a second end 1h of the second coil 3, 1i, 3h, is electrically connected to 3i.
　For example, when the inductance adjusting device does not flow a large current to the electric circuit applied need not water-cooled first coil 1 and the second coil 3.
[0128]
[Modification 6]
　In the present embodiment, a case where the first coil 1 is rotated in the range of 0 ° ~ 180 ° is described as an example. However, the first range of angle of rotation of the coil 1 is not limited to 0 ° ~ 180 °. For example, the sum of the absolute value of the rotation angle in the absolute value of the rotation angle in the first of the first direction of the coil 1 (e.g. clockwise), the second coil 3 and the second direction (e.g., counterclockwise) the range of may be 0 ° ~ 360 °. When doing so, for example, the second coil 3 without rotation, the first range of angle of rotation of the coil 1 can be 0 ° ~ 360 °. As described in modification 2, both the first coil 1 and the second coil 3 may be rotated. It is also possible to avoid the first state shown in the bottom of FIG. 4, in both or one of the states of the second state shown at the top of FIG.
[0129]
[Modification 7]
　as in the present embodiment, the first state shown in the bottom of FIG. 4, the first coil 1 to include a second state shown at the top of FIG. 4 be caused to rotate, it is possible to increase the variable magnification β as seen from the AC power supply circuit of the combined inductance GL preferred. However, it may not include at least one of the state of the two states.
[Modification 8]
　two or more (some or all) of the above modifications 1 to 8 may be combined.
[0130]
(Second Embodiment)
　Next, a second embodiment will be described. In the first embodiment, the case where the number of turns of the first coil 1 and the second coil 3 are each 1 [times] is described as an example. In contrast, in the present embodiment, the case number of turns of the first coil and the second coil is a plurality of times. Thus, the present embodiment and the first embodiment, the number of turns of the first coil and the second coil is mainly different. Accordingly, in the description of this embodiment, the first embodiment and the same parts of, and detailed description thereof is omitted equal denoted by the same reference numerals as those in FIGS. 1 to 10.
[0131]

　FIG. 11 is a diagram showing a first example of the configuration of the inductance adjusting device of the present embodiment. Figure 11 is a view corresponding to Figure 1A. Figure 12A is a diagram illustrating an example of a first coil 111 and the first support member 112. Figure 12B is a diagram illustrating an example of a second coil 113 and the second support member 114. 12A is a view corresponding to FIG. 2A, FIG. 12B is a view corresponding to FIG. 2B.
[0132]
　In the present example, FIG. 11, as shown in FIGS. 12A and 12B,, the number of turns of the first coil 111 and second coil 113 and two respectively, the same number of turns. Further, FIG. 11, as shown in FIGS. 12A and 12B,, the shape of the first coil 111 and second coil 113 is a flat winding configuration. Here, the flat winding, 11, as shown in FIGS. 12A and 12B,, wound around a water-cooled cable in a direction perpendicular to the first coil 111, the second coil 113 axis (the central axis 5) say that. In other words, the first coil 111, as water-cooled cables constituting the second coil 113, first coil 111, arranged in a direction perpendicular to the axis (center axis 5) of the second coil 113, the water-cooled cable is wound.
[0133]
　Thus the flat winding shape, the first coil 111 and the second coil 113, when the coils surface was disposed so as to be substantially parallel to each other at a distance G, 11 it is possible to widen the coil width W shown. The coil width W, cooling the cable group adjacent to each other, in the direction perpendicular to the central axis 5 in length. If the gap G is the same, as the coil width W is wide, it becomes difficult as the magnetic flux between the gap G, the magnetic resistance increases. Therefore, it is possible to increase the coupling coefficient k. Therefore, it is possible to increase the variable magnification β as seen from the AC power supply circuit of the combined inductance GL ((see 4)). In other words, when the flat wound shape, the more the number of turns, the variable magnification β can be increased as viewed from the AC power supply circuit of the combined inductance GL.
[0134]

　FIG. 13 is a diagram showing a second example of the configuration of the inductance adjusting device of the present embodiment. Figure 13 is a view corresponding to Figure 1A. Figure 14A is a diagram illustrating an example of a first coil 131 and the first support member 132. 14B is a diagram illustrating an example of a second coil 133 and the second support member 134. 14A is a view corresponding to FIG. 2A, FIG. 14B is a view corresponding to FIG. 2B.
[0135]
　In the present example, FIG. 13, as shown in FIGS. 14A and 14B,, the number of turns of the first coil 131 and second coil 133 and two respectively, the same number of turns. Further, FIG. 13, as shown in FIGS. 14A and 14B,, the shape of the first coil 131 and second coil 133 and the vertical winding shape. Here, the vertical winding, FIG. 13, as shown in FIGS. 14A and 14B,, a first coil 111, turning up the water-cooled cable in a direction along the axis (center axis 5) of the second coil 113 the say. In other words, the first coil 131, as water-cooled cables constituting the second coil 133, arranged in a direction along the first coil 131, the second coil 133 axis (the central axis 5), the water-cooled cable It is wound.
[0136]
　When this way the vertical winding shape, the coil width W is the number of turns is the same as for the one. Therefore, the variable magnification β is seen from the AC power supply circuit of the combined inductance GL, the same as if the number of turns is one smaller than when the flat wound shape. However, the combined inductance GL is proportional to the square of the winding number. Thus, a flat winding configuration, regardless of the form of vertically wound shape, number of turns of the coil than in the case of one, it is possible to increase the combined inductance GL. Further, by increasing the area of ​​the coil, it is possible to increase the combined inductance GL.
[0137]

　In the present embodiment has been described by taking a case where the number of turns is two times as an example. However, the number of turns is not limited to two, it may be three or more. Number of turns, the size of the inductance adjusting device, the variable magnification beta, the magnitude of the total inductance GL, may be determined depending on the cost, etc. of the inductance adjusting device. Further, in the present embodiment, by taking the number of turns of the first coil 111 and the first support member 112, the case and the number of turns of the first coil 131 and the first support member 132 is the same as an example explained. However, these number of turns may be different.
　Also in this embodiment, it is possible to adopt various modifications described in the first embodiment.
[0138]
(Third Embodiment)
　Next, a third embodiment. In this embodiment, a pair of first and second coils are provided a plurality of sets. Thus, the present embodiment and the first and second embodiments, the configuration according to the number of pairs of first and second coils are different mainly different. Thus, those in the description of this embodiment, first, for the second embodiment and the same parts of, by, for example denoted by the same reference numerals as those in FIGS. 1 to 14B in detail.
[0139]
　Figure 15A, 15B are diagrams showing an example of the configuration of the inductance adjusting device of the present embodiment. 15A is a view corresponding to FIG. 11, FIG. 15B is a view corresponding to FIG 1B. In Figure 15A, illustrating by way first coil 111 shown in FIG. 11, first support member 112, a case where the second coil 113, and a second set of support members 114 are provided two sets as an example. That is, the inductance adjustment apparatus of the present embodiment, the first coil 111a, the first support member 112a, a second coil 113a, and a second set of support members 114a, the first coil 111b, the first support member 112b, and a second set of coils 113b, and the second support member 114b.
[0140]
　Figure 16A ~ FIG. 16D, the first coil 111a, a second coil 113a, a diagram illustrating an example of a connection method of the first coil 111b, and the second coil 113b. Figure 16A ~ FIG 16D is a view corresponding to FIGS. 5A ~ FIG 5B.
　FIG. 16A, FIG. 16B, FIG. 16C shows the first coil 111a, a second coil 113a, a first coil 111b, an example of connecting the second coil 113b in series.
[0141]
　In Figure 16A, it shows the magnetic flux generated from the first coil 111a and second coil 113a, a connection, such as the magnetic flux generated from the first coil 111b and the second coil 113b is constructive, respectively. In FIG. 16B, it shows the magnetic flux generated from the first coil 111a and second coil 113a, a connection, such as the magnetic flux generated from the first coil 111b and the second coil 113b is weakened, respectively. In Figure 16C, constructive flux generated from the first coil 111a and second coil 113a, indicating the connections as magnetic fluxes generated from the first coil 111b and the second coil 113b is weakened.
[0142]
　Figure 16D is a first coil 111a and second coil 113a connected in series, the first coil 111b and the second coil 113b are connected in series, the first coil 111a and the second was connected to these series and second coil 113a, an example of connecting the first coil 111b and the second coil 113b in parallel shown.
　Note that both ends of the circuit shown in FIGS. 16A ~ FIG 16B is connected to the AC power supply circuit.
[0143]
　Further, the first coil 111a, a second coil 113a, a first coil 111b, and connection method of the second coil 113b is set in the first coil and the second coil is connected in series or in parallel if so as to be connected to the other sets in series or parallel, but are not limited to those shown in FIGS. 16A ~ FIG 16B. For example, the first coil 111a, a second coil 113a, may be connected to the first coil 111b, and the second coil 113b in parallel.
[0144]
　Inductance adjusting device of the present embodiment, as shown in FIG. 15B has a power supply terminal 1507a ~ 1507h and water supply terminals 1508a ~ 1508h. The first coil 111a, a second coil 113a, a first coil 111b, and depending on the connection method of the second coil 113b, the first coil 111a, a second coil 113a, a first coil 111b, and end of the second coil 113b are electrically connected to one of power supply terminals 1507a ~ 1507h.
　If this arrangement is adopted, it is possible to increase the variable magnification β as seen from the AC power supply circuit of the combined inductance GL.
[0145]

　In the present embodiment, by taking the case where the first set of examples (configuration shown in FIG. 11) of the first coil 111 and second coil 113 of the second embodiment two pairs provided in Example explained. However, the first embodiment (the configuration shown in FIGS. 1A-FIG. 2B), a second example of the second embodiment (FIG. 13 structure shown in-FIG. 14B), the first coil 1,131 and second the set of coils 3,133 to be two sets provided.
[0146]
　The number of pairs of the first coil and the second coil is not limited to two pairs, but may be three or more. If the number of pairs of the first coil and the second coil and the N sets, the variable magnification β as seen from the AC power supply circuit of the combined inductance GL, a range of (L-kL) ÷ 2N ~ (L + kL) × 2N it can be switched. Here, for simplicity of explanation, the self-inductance L1, L2 of the first coil and the second coil and L. By increasing the number of pairs of first and second coils, it is possible to realize a more versatile inductance adjusting device. Thus, leading to a reduction in cost of the inductance adjusting device.
[0147]
　Further, the present embodiment can be applied to any of the first and second embodiments. Further, in the present embodiment, it is possible to adopt various modifications described in the first and second embodiments.
[0148]
(Fourth Embodiment)
　Next, a fourth embodiment. In the first to third embodiments, the first and second coils, has been described as an example a case of arranging one by one in a direction perpendicular to their axis (center axis 5). In contrast, in the present embodiment, the first coil and the second coil, the case where a plurality of arranged in a direction perpendicular to their axis (center axis 5). Thus, the present embodiment and the first to third embodiments, the configuration according to the number of the first coil and the second coil arranged in the direction perpendicular to the central axis 5 are different mainly different. Accordingly, in the description of this embodiment, the first to third embodiments and the same portion of, and detailed description thereof is omitted equal denoted by the same reference numerals as those in FIGS. 1 to 16D.
[0149]
　Figure 17A is a first coil 171a, which is a diagram showing an example of a configuration of 171b and the first support member 172. 17B is a second coil 173a, which is a diagram showing an example of a configuration of 173b and the second support member 174. Figure 17A is a view corresponding to FIG. 2A, FIG. 17B is a view corresponding to FIG. 2B.
[0150]
　The first coil 171a, 171b is provided with the rotation shaft and the center shaft 5 are arranged to be coaxial. Further, the first coil 171a, 171b are arranged in the same horizontal plane (X-Y plane). Further, the first coil 171a, 171b, the angle in their rotation direction is arranged so as to maintain the state shifted 90 °.
　Similarly, the second coil 173a, 173b is provided with the rotation shaft and the center shaft 5 are arranged to be coaxial. The second coil 173a, 173b are arranged in the same horizontal plane (X-Y plane). The second coil 173a, 173b is, the first coil 171a, the angle in the rotational direction of 171b are arranged so as to maintain the state shifted 90 °.
[0151]
　Further, as described in the first to third embodiments, the first coil 171a, 171b and a second coil 173a, upon placing 173b, first coil 171a, the coil plane of the 171b and the second the coil 173a, the coil surface of 173b is in a state of having a gap G, to be parallel. Gap G may be a variable be constant.
[0152]
　As shown in FIG. 17A, the first support member 172, holes 172a for as the first coil 171a are mounted, 172 b are formed. Further, the first support member 172, the hole 172c ~ 172f to as the first coil 171b are mounted is formed. Holes 172e, 172f, the first coil 171a, so 171b do not interfere with each other on a plane shown in FIG. 17A, a portion overlapping the first coil 171a of the first coil 171b, and the surface shown in FIG. 17A is for placement on the opposite side. Further, the center of the first support member 172 is a hole 172g for as the first support member 172 is attached to the central shaft 5 is formed.

claims

A inductance adjusting device for adjusting the inductance of the electrical circuit,
　a first circumferential portion, and a second circumferential portion, a first coil having a first connection portion,
　and a third circumferential section, the 4 and circumferential portions of the second coil and a second connecting portion has a
　first circumferential portion, said second circumferential portion, said third circumferential section, and the fourth circulating unit, respectively, a portion that circulates so as to surround a region of the inside,
　the first connection portion, one end of said first circumferential portion, and one end of the second circumferential portion mutually a portion for connecting,
　the second connecting portion, said third end rounding part of a fourth end and a portion interconnecting the coiling part of,
　the said first coil second second coil are connected in series or in parallel,
　said second circumferential portion and the first circumferential portion is in the same plane,
　the The fourth circumferential portion and the circumferential portion of the 3 is in the same plane,
　the a first circumferential portion and the second circumferential portion, said third circumferential section and the fourth circumferential section, the distance are arranged in parallel with having,
　at least one between said first coil and the second coil is rotated an axis of said first coil and said second coil as a rotation axis ,
　the shaft includes a middle position of the center of the center and the second circumferential portion of said first circumferential portion, and an intermediate position of the center and a fourth center rounding part of the third circumferential portion is an axis passing through,
　Said first circumferential portion and the second circumferential portion, at least one of said first coil and said second coil are arranged so as to keep the state in which the angle is shifted 180 ° in the direction to rotate ,
　said third circumferential section and the fourth circumferential section arranged so as to keep the angle is shifted 180 ° in a direction at least one of said first coil and said second coil is rotated inductance adjusting apparatus characterized by being.
[Requested item 2]
　To include a first state and both or one of the state of the second state, at least one of said first coil and said second coil is rotated,
　the first state, the in a position in which the first circumferential portion and the third circumferential portion are opposed to each other, and, said second circumferential portion and the fourth circumferential section is in a state at a position facing each other,
　said second state, said in a first circumferential portion and the fourth position and the circumferential portion are opposed to each other, and said second circumferential portion and the third circumferential portion and are opposed to each other inductance adjusting device according to claim 1, characterized in that a state which is positioned to.
[Requested item 3]
　Sum of the absolute value of the absolute value and the rotational angle of the second in the second direction to the first direction of the coil which is opposite to the direction of the first rotation angle in the direction of the first coil inductance adjusting device according to claim 1 or 2, wherein the range of is 0 ° ~ 180 °.
[Requested item 4]
　Said first circumferential portion, said second circumferential portion, said third circumferential section, and the shape and size of the fourth circumferential section is the same at 60% or more portions of their entire length inductance adjusting device according to any one of claims 1 to 3, wherein.
[Requested item 5]
　It said first coil rotates, the inductance adjustment apparatus according to any one of claims 1 to 4, wherein the second coil is characterized in that it does not rotate.
[Requested item 6]
　Said first coil and said second coil, the inductance adjusting according to any one of claims 1 to 5, characterized in that a coil wound more than once in a direction perpendicular to the axis apparatus.
[Requested item 7]
　Wherein there are multiple pairs of first coil and said second coil,
　said plurality of pairs, the inductance adjustment according to any one of claims 1 to 6, characterized in that connected in series or in parallel apparatus.
[Requested item 8]
　Each of said first coil and said second coil, the inductance adjusting device according to any one of claims 1 to 7, wherein a plurality of arranged in a direction perpendicular to said axis.
[Requested item 9]
　Inductance adjusting device according to any one of claims 1 to 8, further comprising a switching device for switching and connecting to the parallel and be connected to the series.
[Requested item 10]
　Inductance adjusting device according to any one of claims 1 to 9, wherein said that the rotation is carried out when said electrical circuit is operating.
[Requested item 11]
　Further comprising the first coil and the second coil and electrically connected to the capacitor,
　wherein the capacitor is a capacitor for the electrical circuit to reduce the potential applied to the inductance adjusting device when being energized inductance adjusting device according to any one of claims 1 to 10, characterized in that.
[Requested item 12]
　Inductance adjusting device according to any one of claims 1 to 11, characterized in that changing the direction of the position along the at least one of said axes of said first coil and said second coil.
[Requested item 13]
　It said first coil and said second coil, according to any one of claims 1 to 12, characterized in that the resonance current flowing in said electrical circuit is connected to the electric circuit so as not to branch inductance adjusting device.