Technical field
[0001]
　The present invention relates to an elevator using the non-contact power feeding device and the same.
BACKGROUND
[0002]
　Typical elevator, the feeder line called tail code suspended from the car, are performed the power supply to the electric devices in the car. By the way, recently in the skyscraper is built, if you want a lift to the skyscraper is the elevator of a long-stroke.
[0003]
　In the case where the elevator is long stroke of the tail code to power electrical equipment in the elevator car becomes longer, the mass of the tail code is also that increases with this, exceeds a certain predetermined length tail code there may not withstand the weight of itself. On the other hand, in the case of eliminating the tail code, it is not possible to adopt this measure because it becomes impossible to supply power to electrical equipment in the elevator of the car.
[0004]
　Therefore, as the power supply method to the electric devices in the car, for example, as described in Japanese Patent No. 4130913 (Patent Document 1), provided in the hoistway while the car is stopped charged to the storage battery mounted on the car with the non-contact power feeding device, while the car is traveling has been proposed a non-contact power feeding device supplies electric power to the electric equipment of the car from the battery.
[0005]
　In a non-contact power feeding device in Patent Document 1 is intended to power by electromagnetic induction, primary coil feeding side transformer unit, the secondary coil becomes the power receiving side transformer unit. A medium an alternating magnetic field generated by a high frequency current flowing through the primary coil, by generating an induced current in the secondary coil can supply power even spaced between the primary and secondary coils in a non-contact .
[0006]
　Incidentally, in Patent Document 1, as in Figure 19, it has a configuration for supplying electric power by using the CI-type transformer. And the CI-type transformer, are named derived from the shape of each of the transformer core. 19, a core shape of the power feeding side transformer section is similar to the "C" of the alphabet, the core shape of the power receiving side transformer unit is called for to be similar, the CI-type transformer to "I".
CITATION
Patent Document
[0007]
Patent Document 1: Japanese Patent No. 4130913
Summary of the Invention
Problems that the Invention is to Solve
[0008]
　Then, in FIG. 19 of Patent Document 1, it is subjected to non-contact power feeding using the CI-type transformer. In the trans configuration by attaching the receiving coil in the vicinity of the air gap of the core, to enhance the binding rate. However, as can be seen from FIG. 19, since the core is on the outside of the feeding coil of the power supply transformer section is such provided, so that has leaked magnetic field at the feed coil side.
[0009]
　Leakage magnetic field from the feeding transformer section to the car may be in the car is almost covered with a metal, room space of the hall and the building will be attenuated since there is a distance from the feeding transformer section, passengers, or residents or impact on the building of the user, are those little.
[0010]
　However, since such a guide rail and the feeding portion of the support member for guiding the car is metal iron is used, resulting in a problem that the feed efficiency becomes hot to the support of the guide rail and the feed section is reduced .
[0011]
　An object of the present invention is to provide a lift which uses a novel non-contact power feeding device and it to improve feed efficiency by reducing the leakage magnetic field from the feeding transformer section.
Means for Solving the Problems
[0012]
　Feature of the present invention, the non-contact power feeding assembly, both ends of the axial direction is opened, yet the magnetic casing made of a magnetic material axially opening formed along the axial direction, are arranged in the magnetic housing power receiving coil, or the power supply coil, an axial opening through by feeding coil mounted to a support member positioned in the magnetic housing or receiving coil, the magnetic housing, the leakage magnetic field from the axial opening of the magnetic housing and a blocking manner with the axial opening magnetic disposed opposite to the support member to the plate is in place.
Effect of the invention
[0013]
　According to the present invention, can be reduced by the magnetic plate provided so as to face the axial opening of the leakage magnetic field from the receiving electric transformer unit leaked from the axial opening of the magnetic body, it is possible to improve the power supply efficiency Become.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014]
[1] a non-contact power feeding apparatus according to the embodiment of the present invention, is a cross-sectional view taken on plane perpendicular to the lifting direction of the car.
It is a cross-sectional view showing the A-A section of FIG. 1; FIG.
[3] is an overall perspective view of the power receiving transformer unit from obliquely above as shown in FIG.
A [4] an overall perspective view of the feeding transformer section viewed obliquely from above as shown in FIG.
5 is a side view from the side of the power supply transformer section shown in FIG.
6 is a graph comparing the leakage magnetic field of a non-contact power feeding device and the conventional non-contact power feeding device according to the present embodiment.
7 is an overall perspective view showing a state attached to the hoistway and the car take the non-contact power feeding device according to the present embodiment.
DESCRIPTION OF THE INVENTION
[0015]
　Will now be described in detail with reference to the accompanying drawings, embodiments of the present invention, the present invention is the following embodiments is not limited to the embodiment, various modifications and in the technical concept of the present invention Application Example the also includes in its scope.
[0016]
　Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1-5. Figure 1 is a non-contact power feeding device composed of the feeding side transformer portion attached to the elevator shaft and the power reception side transformer portion attached to the elevator car is obtained by cross-section plane perpendicular to the lifting direction of the car. Then, the car is intended to lift in a direction perpendicular to the paper surface, opposite ends of the housing constituting the power receiving transformer unit of the contactless power transfer system is one that has been opened.
[0017]
　Non-contact power feeding device 10 is configured with a non-contact power supply assembly and the power reception side transformer unit 11 consists of the feeding side transformer unit 12. In this embodiment, the power receiving side transformer portion 11 of the non-contact power supply assembly as described above is mounted on the elevator car, the power feeding side transformer section 12 of the non-contact power supply assembly is attached to a wall surface or the like of the elevator shaft.
[0018]
　1 to 3, the power receiving side transformer 11, both ends when viewed in cross section perpendicular to the lifting direction of the car is opened katakana "U" shape, or the alphabet "U" shaped It has a formed cylindrical portion. That is, since the cylindrical portion is the cage moves up and down the hoistway, both ends of the axial direction is opened. Here, it means the lifting direction of the car to move hoistway and axially. The cylindrical portion is an enclosure 13 which constitute the power receiving side transformer unit 11, the housing 13 is formed in a flat plate made of three aluminum.
[0019]
　When viewed from the feeding side transformer unit 12, a housing 13, a back plate 13B formed of a nonmagnetic material such as aluminum, a right side plate 13RS, has become a left side plate 13LS, back plate 13B and two side plates 13RS, 13LS intersect at right angles, two side plates 13RS, 13LS are arranged in parallel, respectively.
[0020]
　Back plate 13B and two side plates 13RS, 13LS are the aluminum is non-magnetic material are welded by an AC TIG welding. Incidentally, the back plate 13B and two side plates 13RS in extrusion rather than welding, it is also possible to integrally form the 13LS. In this case, the back plate 13B and two side plates 13RS, connection between 13LS is formed in an arc shape.
[0021]
　The tubular casing 13, which is axial opening 14 which penetrates an opening at both ends in the axial direction (the elevation direction of the car) is formed, the feeding side transformer to be described later by using this axial opening 14 feeding coil parts 12 is made to be positioned in the housing 13. The width of the axial opening 14 perpendicular to the axial direction of the housing 13 is approximately equal to the width between the right side plate 13RS and left side plate 13LS.
[0022]
　The magnetic housing 15 made of a magnetic material is disposed inside the housing 13. The magnetic housing 15 is formed with three rectangular plate made of ferrite. In other words, the magnetic housing 15 back magnetic plate 15B, right side magnetic plate 15RS, consists left side magnetic plate 15LS. Rear magnetic plate 15B and two side magnetic plate 15RS, 15LS intersect at right angles, two side magnetic plate 15RS, 15LS are arranged in parallel, respectively. Also, two side magnetic plate 15RS, 15LS are formed in the same size and shape.
[0023]
　The rear magnetic plate 15B, right side magnetic plate 15RS, left side magnetic plate 15LS is a rear plate 13B and two side plates 13RS of the housing 13, the inside of the 13LS, affixed by synthetic adhesives. Of course, it is also possible to make the rear magnetic plate 15B, right side magnetic plate 15RS, the left side magnetic plate 15LS integrally. Flux is prevented from leaking to the outside by the magnetic housing 15.
[0024]
　Here, the rear magnetic plate 15B, right side magnetic plate 15RS, left side magnetic plate 15LS, which may be made of one of the ferrite plate can also be made by combining a plurality of small ferrite plate. Because of the high price if you want to use a large ferrite plate, by creating a combination of small ferrite plate, it is possible to suppress the product unit price low.
[0025]
　The inner wall surface of the right side magnetic plate 15RS and left side magnetic plate 15LS, right receiving coil 16R and the left receiving coil 16L are fixed. Each of the power receiving coil 16R, 16L is a coil having the same shape wound annularly, rectangular right side magnetic plate 15RS, are determined in a shape that fits into the surface of the left side magnetic plate 15LS.
[0026]
　Each of the power receiving coil 16R, since the high-frequency current flows through the 16L, to reduce the resistance due to the skin effect, litz wire is used. Although not arranged magnetic bodies in the central region of the right power receiving coil 16R and the left receiving coil 16L in this embodiment, it goes without saying that it may be arranged magnetic, the magnetic circuit in this case an effect of magnetic resistance of decreases.
[0027]
　Next, a description will be given feeding side transformer unit 12. In FIGS. 1-2, FIGS. 4-5, the power feeding side transformer section 12 has when viewed from the top surface and the support formed on the alphabet "T" shape. Thus, the shape of the power receiving side transformer unit 11 is "U" shaped, the shape of the power feeding side transformer unit 12 from being a "T" shape, it can be referred to as UT transformer against CI trans .
[0028]
　The support 17 is a feeder body constituting the power feeding side transformer unit 12, the support 17 is formed with a flat plate made of a sheet of aluminum, in the protruding surface portion formed of a synthetic resin. That is, the support body 17, a front plate 17F that functions as a support plate made of a nonmagnetic material such as aluminum, taken from the projecting surface portion 17B which is erected perpendicularly toward the front plate 17F axially open side 14 there.
[0029]
　The shape of the front plate 17F has a substantially same shape as the shape of the axial opening 14 formed in the housing 13 of the power receiving side transformer unit 11, facing the axial opening 14 formed in the front plate 17F and the housing 13 and when the front plate 17F has a form such as to close the axial opening 14. Of course, since moves with the power receiving side transformer 11 car, it is spaced by a predetermined distance from the front plate 17F and enclosure 13 of the power receiving side transformer unit 11.
[0030]
　Protruding surface portion 17B is cut-out 18 in the central region is formed, a protruding surface portion 17B and the front plate 17F is adapted to form a through hole in a state of being bonded. Therefore, in the vertical direction in the protruding surface portion 17B, so that the upper support legs 17B-U and the lower support leg 17B-B is formed, Incidentally, the upper support legs 17B-U of the protruding surface portion 17B, the lower support legs the 17B-B and the front plate 17F can be integrally joined by synthetic adhesives or bolts. Coupling direction of the front plate 17F of the projecting surface portion 17B is coupled along a direction of extension of the axial opening 14 of the housing 13, thereby, the protruding surface portion 17B is no longer interfere with the housing 13, projecting surface portion 17B can move relatively freely from the housing 13.
[0031]
　Here, the length in the axial direction of the front plate 17F of the support 17 of the feeding side transformer section 12 is longer than the axial length of the housing 13 of the power receiving transformer unit 11. That is, the front-side magnetic plate 20F attached to the front plate 17F is formed in substantially the same shape as the axial opening 14 of the housing 13. Therefore, the support legs 17B-U of the protruding surface 17B to the outside from the front side magnetic plate 20F, since they must be disposed of 17B-B, is longer axial length of the amount corresponding to the front plate 17F.
[0032]
　Further, the protruding surface portions 17B, when the axial opening 14 formed in the front plate 17F and the housing 13 are opposing, dimensioned so as to be located near the center of the magnetic housing 15 by inserting the axial opening 14 ing. The central area of ​​the projecting surface portion 17B and a right feeding coil 19R and the left feeding coil 19L are fixed by synthetic adhesives. The right feed coil 19R and the left feeding coil 19L is also to reduce the resistance due to the skin effect, litz wire is used.
[0033]
　When the axial opening 14 formed in the front plate 17F and the housing 13 are opposing right power receiving coil 16R of the right feed coil 19R and the magnetic housing 15 of the projecting surface portion 17B is face each other, powered by the electromagnetic induction dimensions are determined so as to be able to. Similarly, the left power receiving coil 16L of the left feeding coil 19L and the magnetic housing 15 of the projecting surface portion 17B also face each other, the dimensions are determined so as to be powered by electromagnetic induction.
[0034]
　Then, on the surface of the axial opening 14 of the front plate 17F of the support 17 of the feeding side transformer unit 12, it is one of the front-side magnetic plate 20F formed with ferrite plate affixed to and supported. The front-side magnetic plate 20F has the axial opening 14 and the opposing positions, in particular feeding coil 19R, the function of the magnetic field intercepts leaking to the outside from 19L. Accordingly, at a position where the front-side magnetic plate 20F is opposed to the axial opening 14, the power receiving coil 16R, 16L and the feeding coil 19R, 19L becomes a form surrounded by a front-side magnetic plate 20F and the magnetic body 15, the leakage magnetic field it is possible to effectively reduce.
[0035]
　Incidentally, the front-side magnetic plate 20F is inserted through the notch 18 formed in the projecting surface portion 17B, are those having the same degree of size and shape as the shape of the axial opening 14 of the housing 13.
[0036]
　Thereby, it is possible to reduce the magnetic resistance of the front-side magnetic plate 20F. For example, in a case of not forming the notch 18 in the protruding surface portion 17B must bisected front side magnetic plate 20F and the boundary of the projecting surface portion 17B. Therefore, magnetic resistance increases in the divided portion, so that an adverse effect on the power supply efficiency. On the contrary, by providing the notch 18 in the protruding surface portion 17B, there is no need to 2 divides the front side magnetic plates 20F, since one is a front-side magnetic plate 20F, is possible to reduce the magnetic resistance become able to.
[0037]
　Then, in a state in which the power receiving side transformer 11 and the feeding side transformer 12 is supplying power to the power receiving side transformer unit 11 from the feeding side transformer section 12 facing each other, the power receiving coil 16R, 16S and feeder coil 19R, 19L is a rear magnetic plate 15B, right side magnetic plate 15RS, left side magnetic plate 15LS, and because it is surrounded by the front-side magnetic plate 20F, can be leakage magnetic field leaking to the outside is reduced, thereby improving the power supply efficiency. Of course, if supporting the feeding side transformer portion 12 of metal iron, it is needless to say that can suppress the heat generation of the support portion.
[0038]
　Figure 6 illustrates a CI type transformer in Figure 19 of Patent Document 1, the measurement results of the UT type transformer leakage flux according to the present embodiment. The median of the horizontal axis in FIG. 6 is the position of the projecting surface portion 17B shown in FIG. 1, the horizontal axis represents the width direction of the axial opening 14 length as a boundary it. The vertical axis represents the magnitude of the width direction of the leakage magnetic flux of the axial opening 4.
[0039]
　As can be seen from FIG. 6, CI type transformer and UT transformer also has protruding surface portion 17B increases leakage flux toward the end side from a center located at UT transformer according to the present embodiment, the CI-type transformer it can be understood that running low is much leakage flux compared. Thus, it becomes possible to reduce the magnetic fields leaking from the feeding transformer section in the magnetic housing 15 by the front-side magnetic plate 20F.
[0040]
　In the present embodiment, the power receiving coil 16R, 16L and the feeding coil 19R, 19L is formed in an annular shape of the coil may not necessarily annular, for example formed in an arc shape only ellipse or corners those may be a rectangular coil shape.
[0041]
　The power receiving coil 16R, 16L and the feeding coil 19R, by the same shape to 19L, it is possible to improve the volume efficiency, it is possible to suppress an increase in product unit cost. Further, the power receiving coil 16R, 16L and the feeding coil 19R, in the case where different shapes of 19L, there is a possibility of causing erroneous assembly, wrong assembly can be eliminated by the same shape as in this embodiment, it is possible to improve work efficiency.
[0042]
　Further, in the present embodiment, the housing 13 side and the power receiving side transformer unit 11, although the support 17 side to the feeding side transformer unit 12, the housing 13 side and the feeding side transformer unit 11, the support 17 side it is also possible to the power receiving side transformer unit 12.
[0043]
　Next, an embodiment of arranging the non-contact power feeding device described above in the elevator car. In the present embodiment, an example that is placed on the car the housing 13 side as a power receiving side transformer section 11, and installed in the hoistway 24 the support 17 side as a feeding side transformer unit 12. Car 21 is moved to the hoistway 24 up and down by the hoisting machine (not shown), and transports the passengers to the destination floor of the target. In FIG. 7, a rope or the like for guide rails for guiding the car, the car hoisting / a lowering is omitted.
[0044]
　7, in the heavenly surface of the car 21, the control unit 22, the power receiving side transformer 11 and a power receiving circuit / battery 23 for controlling the voice notification or the opening and closing of the door to the cage 21 is placed. Incoming circuit / battery 23 is to supply power to the control unit 22, and is charged by the power from the power receiving side transformer unit 12.
[0045]
　Power receiving side transformer unit 11 is powered from the housing 13 side of the power receiving side transformer unit 11 shown in FIG. 1 and using (U side) shaft installed in 24 the feeding side transformer unit 12 (T side) It has become so.
[0046]
　Here, as described above, the length in the axial direction of the front plate 17F of the support 17 of the feeding side transformer section 12 is longer than the axial length of the housing 13 of the power receiving transformer unit 11. That is, the front-side magnetic plate 20F attached to the front plate 17F is formed in substantially the same shape as the axial opening 14 of the housing 13. Therefore, the support legs 17B-U of the protruding surface 17B to the outside from the front side magnetic plate 20F, since they must be disposed of 17B-B, is longer axial length of the amount corresponding to the front plate 17F. Therefore, as shown in FIG. 3, with respect to the axial length H1 of the housing 13, towards the length H2 of the axial direction of the support 17 is longer as shown in FIG.
[0047]
　Then, in the present embodiment is shorter axial length, is used for the cage and the power receiving side transformer portion 11 of the housing 13 side (U side). This is because you want to suppress the height of the power receiving side transformer unit 11 which projects above the ceiling surface of the car 21. A high level of the power receiving side transformer unit 11 which is placed on the celestial surface of the car 21, is formed in the hoistway of elevator, for space called overhead becomes large in the upper heavens surface of the car it is. Therefore, in this embodiment, the power receiving side transformer portion 11 of the housing 13 side (U side) by the power receiving side transformer unit 11, thereby suppressing an increase in overhead.
[0048]
　Here, the non-contact power feeding device described above is shows the case of applying the elevator car, applications can be applied to various industrial mechanical system does not mean limited to this.
[0049]
　According to the present invention as described above, the non-contact power supply assembly, both ends of the axial direction is opened, yet the magnetic casing made of a magnetic material axially opening formed along the axial direction, the magnetic housing It arranged receiving coil or feeding coil and power supply coil attached to a support member disposed in the magnetic casing through the axial opening of the magnetic body, or a power receiving coil, the axial opening of the magnetic housing one that is composed of a magnetic plate disposed on the support member opposite the axial opening so as to block the leakage magnetic field from a.
[0050]
　According to this configuration, it is possible to reduce the magnetic plate provided so as to face the axial opening of the leakage magnetic field from the receiving electric transformer unit leaked from the axial opening of the magnetic body, it is possible to improve the power supply efficiency Become.
[0051]
　The present invention is not limited to the embodiments described above, but includes various modifications. For example, the above embodiments are those described in detail in order to better illustrate the invention and are not intended to be limited to those having the necessarily all described configurations. Further, it is possible to replace a part of the configuration of one embodiment in the configuration of another embodiment, it is also possible to add a configuration of an embodiment alternative embodiment to the configuration of.
DESCRIPTION OF SYMBOLS
[0052]
　10 ... non-contact power feeding device, 11 ... receiving side transformer unit, 12 ... feeding side transformer unit, 13 ... housing, 13B ... back plate, 13RS ... right side plate, 13LS ... left side plate, 14 ... axial opening, 15 ... magnetic housing, 15B ... rear magnetic plate, 15RS ... right side magnetic plate, 15LS ... left side magnetic plate, 16R ... right power receiving coil, 16L ... left power receiving coil, 17 ... support, 17B ... projecting surface portions, 17F ... front plate, 18 ... notch, 19R ... right feeding coil, 19L ... left feeding coil, 20F ... front-side magnetic plate, 21 ... car, 22 ... controller, 23 ... receiving circuit / battery.

claims
[Requested item 1]
　And a receiving coil provided on the power receiving side transformer section and the power feeding coil provided on the feeding side transformer unit combines the AC magnetic field as a medium, by generating an induced current in the receiving coil by supplying an alternating current to the feeding coil, in the non-contact power feeding device provided with a non-contact power supply assembly for supplying power to the side of the power receiving coil from the side of the feeding coil in a non-contact,
　the non-contact power supply assembly, both ends of the axial direction is open, yet a tubular magnetic casing made of a magnetic material the axial opening is formed along the axial direction, wherein the power receiving coil disposed in the magnetic housing, or with the feeding coil, the axial direction of the magnetic housing the feeding coil through the opening attached to the support member located in said magnetic housing, or with the power receiving coil, said axial to block leakage magnetic field from the axial opening of the magnetic housing Non-contact power feeding device characterized in that it consists disposed on said supporting member to face the mouth magnetic plate.
[Requested item 2]
　According to claim 1,
　wherein the periphery of the magnetic housing, along with being surrounded by a housing made of a nonmagnetic material except the axial opening,
　the magnetic plate which faces the axial opening, the axial opening non-contact power feeding device, characterized in that attached to a nonmagnetic material on the opposite side, the supporting plate constituting the supporting member and the.
[Requested item 3]
　According to claim 2,
　wherein the support plate, said through said axial opening of the magnetic body projecting to the magnetic housing, and projecting portions are provided which constitute the support member, the said projecting portion non-contact power feeding device characterized by feeding coil, or said power receiving coil is mounted.
[Requested item 4]
　In claim 3,
　mounted on the support plate, the feeding coil, or wherein the protrusion receiving coil is mounted, wherein the magnetic housing and said opening in the axial direction of both ends of the housing surrounding the and through the axial opening, the non-contact power feeding device, characterized in that the internal relative movement of the magnetic housing.
[Requested item 5]
　According to claim 4,
　wherein there is formed a notch in the vicinity of the center of the projecting portion, while fixing the ends of the projecting portions to said support plate, said magnetic plate attached to the support plate, the cut non-contact power feeding device which is a single magnetic plate extending through the lack.
[Requested item 6]
　According to claim 1,
　wherein the magnetic housing to arranged the power receiving coil, or said feeding coil, wherein the power supply coil which is attached to the support member, or the power receiving coil, that are formed in the same size and shape non-contact power feeding device according to claim.
[Requested item 7]
　A car which moves the hoistway above and below, the feeding side transformer unit installed in the hoistway, mounted on the car has a power receiving side transformer unit, a power supply coil provided on the feeding side transformer section the and a receiving coil provided on the power receiving side transformer unit combines the AC magnetic field as a medium, by generating an induced current on the side of the power receiving coil by supplying an alternating current to the side of the feeding coil, from the side of the feeding coil in elevators provided with a non-contact power supply assembly for supplying power to the side of the power receiving coil in a non-contact,
　the non-contact power supply assembly, both ends of the axial direction is opened, yet the axial opening in the axial direction a magnetic casing made of formed magnetic, the magnetic housing to arranged the power receiving coil, or said feeding coil, the magnetic housing the axial opening through in position in said magnetic housing in The feeding coil attached to the support member, or said power receiving coil, which is disposed on said support member so as to face the axial opening so as to block the leakage magnetic field from the axial opening of the magnetic body magnetic to Elevator characterized in that it is composed of a body.
[Requested item 8]
　According to claim 7,
　wherein the power receiving side transformer part of the car, the magnetic body, the result from said power receiving coil disposed in the magnetic housing,
　wherein the feeding side transformer portion of the hoistway, said magnetic housing and the feeding coil attached to the support member through said axial opening of the body positioned in the magnetic housing, the axial opening so as to block the leakage magnetic field from the axial opening of the magnetic housing elevator characterized by comprising Karakara the arranged magnetic to the support member opposite.