The present disclosure relates to a magnetic gear pole piece arrangement, a magnetic gear, and a method of manufacturing a magnetic gear pole piece arrangement.
Background technology
[0002]
As a type of gear device, a magnetic gear that uses the attractive and repulsive forces of magnets to transmit torque and motion without contact, thereby avoiding problems such as wear, vibration, and noise caused by tooth contact. There is Among these magnetic gears, the magnetic flux modulation type (harmonic type) magnetic gear has an inner peripheral magnetic field and an outer peripheral magnetic field arranged concentrically (coaxially), and between these two magnetic magnetic fields. A magnetic pole piece device having a plurality of magnetic pole pieces (pole pieces) and a plurality of non-magnetic bodies arranged alternately in the circumferential direction (see Patent Document 1). ). Then, the magnetic fluxes of the magnets of the two magnetic fields are modulated by the magnetic pole pieces to generate harmonic magnetic fluxes, and the two magnetic fields are synchronized with the harmonic magnetic fluxes. , the flux-modulated magnetic gear operates.
[0003]
For example, in a magnetic geared motor in which the magnetic flux modulation type magnetic gear and the motor are integrated, the magnetic field on the outer peripheral side is fixed and functions as a stator, and the magnetic field on the inner peripheral side is fixed to the high-speed rotor, The pole piece arrangement described above functions as a low speed rotor. By rotating the high-speed rotor by the magnetomotive force of the coil, the low-speed rotor is rotated according to the reduction ratio. As a magnetic geared motor, a type in which permanent magnets are installed in a high-speed rotor and a stator, and a type in which a permanent magnet is installed only in a high-speed rotor are known.
prior art documents
patent literature
[0004]
Patent Document 1: US Patent No. 9219395
SUMMARY OF THE INVENTION
Problems to be Solved by the Invention
[0005]
In Patent Document 1, in the magnetic pole piece device, each of the plurality of magnetic pole pieces arranged along the circumferential direction is provided with a rod-shaped reinforcing member extending along the axial direction to enhance rigidity. However, such a reinforcing member extends in the axial direction and contributes to rigidity against loads acting along the radial direction, such as electromagnetic force acting between magnet fields and centrifugal load. hard to do. If the magnetic pole piece device does not have sufficient overall rigidity, including not only the load in the axial direction but also the load in the radial direction, it may deform in the radial direction and interfere with the adjacent magnetic fields.
[0006]
At least one embodiment of the present disclosure has been made in view of the above circumstances, and provides a magnetic gear magnetic pole piece device having excellent rigidity, a magnetic gear, and a method for manufacturing the magnetic gear magnetic pole piece device. With the goal.
Means to solve problems
[0007]
In order to solve the above problems, the magnetic gear pole piece device according to at least one embodiment of the present disclosure has
an outer peripheral cover member and an inner peripheral cover member that are coaxially arranged on the radially outer side and inner side of the magnetic gear, respectively, and have a cylindrical shape;
A magnetic pole piece formed by partitioning a cylindrical space formed between an inner peripheral surface of the outer peripheral cover member and an outer peripheral surface of the inner peripheral cover member with a wall member extending along the radial direction. a holder;
a magnetic pole piece held by the magnetic pole piece holder;
with
The inner ring member, the outer ring member and the wall member are integrally constructed.
[0008]
In order to solve the above problems, the magnetic gear according to at least one embodiment of the present disclosure has
a pole piece device according to at least one embodiment of the present disclosure;
an inner diameter side magnetic field arranged on the inner peripheral side of the magnetic pole piece device;
an outer diameter side magnetic field arranged on the outer peripheral side of the magnetic pole piece device;
Prepare.
[0009]
A method for manufacturing a magnetic pole piece device for a magnetic gear according to at least one embodiment of the present disclosure, in order to solve the above problems,
an outer peripheral cover member and an inner peripheral cover member that are coaxially arranged on the radially outer side and inner side of the magnetic gear, respectively, and have a cylindrical shape;
A magnetic pole piece formed by partitioning a cylindrical space formed between an inner peripheral surface of the outer peripheral cover member and an outer peripheral surface of the inner peripheral cover member with a wall member extending along the radial direction. a holder;
a magnetic pole piece held by the magnetic pole piece holder;
with
A method of manufacturing a magnetic pole piece device for a magnetic gear, wherein the inner ring member, the outer ring member and the wall member are integrally formed,
a step of manufacturing a first intermediate molded product by integrally molding one of the outer peripheral cover member and the inner peripheral cover member with the wall member;
a step of manufacturing a second intermediate product by inserting the magnetic pole piece into a recess formed between the adjacent wall members of the first intermediate product;
a step of integrally molding by attaching the other of the outer peripheral cover member or the inner peripheral cover member to the second intermediate molded product;
Prepare.
The invention's effect
[0010]
According to at least one embodiment of the present disclosure, it is possible to provide a magnetic pole piece device of a magnetic gear having excellent rigidity, a magnetic gear, and a method of manufacturing the magnetic pole piece device of the magnetic gear.
Brief description of the drawing
[0011]
1 is a radial cross-sectional view of a magnetic gear according to an embodiment of the present invention; FIG.
2 is a partially enlarged view of the magnetic gear shown in FIG. 1; FIG.
3 is a cross-sectional view along the axial direction of a magnetic gear according to an embodiment of the present invention; FIG.
4A is a schematic diagram of a cross-section along a radial direction of a pole piece device according to an embodiment of the present disclosure; FIG.
4B] A diagram showing the thermal conductivity and tensile modulus of PAN-based CFRP and pitch-based CFRP in comparison with metal. [Fig.
5 is a schematic diagram of a cross section along the axial direction of line LL in FIG. 4A. FIG.
6 is a schematic cross-sectional view schematically showing an enlarged vicinity of the outer peripheral cover member and the inner peripheral cover member of FIG. 5;
7 is a first modification of FIG. 5; FIG.
8 is an enlarged view of range M in FIG. 7; FIG.
9 is a second modification of FIG. 5. FIG.
10 is a schematic diagram of a cross section along the axial direction of line NN of FIG. 9;
11 is a flow chart schematically showing a method of manufacturing a pole piece device according to an embodiment of the present disclosure; FIG.
12 is a flow chart showing an embodiment of the manufacturing method of FIG. 11. FIG.
13A is a schematic diagram schematically showing the manufacturing process of the magnetic pole piece device in each step of FIG. 12; FIG.
13B is a schematic diagram schematically showing the manufacturing process of the magnetic pole piece device in each step of FIG. 12; FIG.
13C is a schematic diagram schematically showing the manufacturing process of the magnetic pole piece device in each step of FIG. 12; FIG.
14 is a flow chart showing another embodiment of the manufacturing method of FIG. 11. FIG.
15A is a schematic diagram schematically showing the manufacturing process of the magnetic pole piece device in each step of FIG. 14; FIG.
15B is a schematic diagram schematically showing the manufacturing process of the magnetic pole piece device in each step of FIG. 14; FIG.
15C is a schematic diagram schematically showing the manufacturing process of the magnetic pole piece device in each step of FIG. 14; FIG.
16A] An example of a perspective view showing a configuration example of a core material. [FIG.
16B is another example of a perspective view showing a configuration example of a core material. FIG.
16C is another example of a perspective view showing a configuration example of a core material. FIG.
17A] A modification of FIG. 16A. [FIG.
17B is another modification of FIG. 16A. FIG.
18 is a perspective view showing a configuration example of a pole piece held by a pole piece holder; FIG.
19] Fig. 19 is a schematic diagram showing a configuration of a connecting portion between a solid member and a pole piece holder in the pole piece device. [Fig.
20A is a schematic diagram showing one example of attaching the solid member shown in FIG. 19 to the outer cover member or the inner cover member; FIG.
20B is a schematic diagram showing another example of attaching the solid member shown in FIG. 19 to the outer cover member or the inner cover member; FIG.
21] Fig. 21 is a schematic diagram showing another mounting example of the solid member. [Fig.
22A is an example of a vertical cross-sectional view along the axial direction of a connection structure including a solid member and a rotor end plate; FIG.
22B is a plan view showing the connecting structure of FIG. 22A from the outside in the radial direction; FIG.
23A is another example of a vertical cross-sectional view along the axial direction of the connection structure including the solid member and the rotor end plate. FIG.
23B is a plan view showing the connecting structure of FIG. 23A from the outside in the radial direction; FIG.
24A is another example of a vertical cross-sectional view along the axial direction of the connection structure including the solid member and the rotor end plate. FIG.
24B is a plan view showing the connecting structure of FIG. 24A from the outside in the radial direction; FIG.
25] Fig. 25 is a perspective view showing another configuration example of the core material. [Fig.
26 is a schematic diagram showing a manufacturing process of the core material shown in FIG. 25; FIG.
27 is an example of a cross-sectional view perpendicular to the axial direction of the core material. FIG.
28 is a modification of FIG. 27. FIG.
29 is another modification of FIG. 27. FIG.
30 is another modification of FIG. 27. FIG.
31A is a modification of FIG. 6. FIG.
31B is another modification of FIG. 6. FIG.
31C is another modification of FIG. 6. FIG.
31D is another modification of FIG. 6. FIG.
MODE FOR CARRYING OUT THE INVENTION
[0012]
Several embodiments of the present invention will be described below with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of the components described as embodiments or shown in the drawings are not intended to limit the scope of the present invention, and are merely illustrative examples. No.
For example, expressions denoting relative or absolute arrangements such as "in a direction", "along a direction", "parallel", "perpendicular", "center", "concentric" or "coaxial" are strictly not only represents such an arrangement, but also represents a state of relative displacement with a tolerance or an angle or distance to the extent that the same function can be obtained.
For example, expressions such as "identical", "equal", and "homogeneous", which express that things are in the same state, not only express the state of being strictly equal, but also have tolerances or differences to the extent that the same function can be obtained. It shall also represent the existing state.
For example, expressions that express shapes such as squares and cylinders do not only represent shapes such as squares and cylinders in a geometrically strict sense, but also include irregularities and chamfers to the extent that the same effect can be obtained. The shape including the part etc. shall also be represented.
On the other hand, the expressions "comprising", "comprising", "having", "including", or "having" one component are not exclusive expressions that exclude the existence of other components.
[0013]
(Configuration of magnetic gear 9)
FIG. 1 is a schematic diagram of a cross section along the radial direction c of the magnetic gear 9 according to one embodiment of the present invention. FIG. 2 is a partially enlarged cross-sectional view of the magnetic gear 9 shown in FIG. FIG. 3 is a schematic diagram of a cross section along the axial direction b of the magnetic gear 9 according to one embodiment of the present invention.
[0014]
The magnetic gear 9 is a device that has a mechanism that uses the attractive force and repulsive force of a magnet to transmit torque without contact. The magnetic gear 9 shown in FIGS. 1 to 3 is of a magnetic flux modulation type (harmonic type), and as shown, the outer diameter side magnet field 5 having a cylindrical (annular shape, the same applies hereinafter) shape as a whole. (outer rotor), an inner diameter magnet field 7 (inner rotor) having an overall cylindrical or columnar shape, and a magnetic pole piece device 1 (center rotor) having an overall cylindrical shape are coaxially arranged. , are arranged with a constant gap G (air gap) in the radial direction c (radial direction). That is, the outer magnet field 5 is arranged radially outward (outer diameter side) with respect to the inner magnet field 7 . Also, the pole piece device 1 is arranged between the outer magnet field 5 and the inner magnet field 7 . The outer magnet field 5, the inner magnet field 7 and the pole piece device 1 are arranged concentrically.
[0015]
In addition, as shown in FIG. 2, the outer diameter side magnet field 5 and the inner diameter side magnet field 7 are circumferential It has a magnetic pole pair (51, 71), such as a permanent magnet, consisting of a plurality of north and south poles spaced (equally spaced) thereon. Specifically, the outer diameter magnet field 5 has a plurality of magnetic pole pairs 51 and a support member 52 that supports the plurality of magnetic pole pairs 51 . On the cylindrical inner peripheral surface of the outer magnet field 5, a plurality of magnetic pole pairs 51 face the radial direction c, and the N poles and S poles alternate along the circumferential direction. It is installed over the entire circumference of the Similarly, the inner diameter magnet field 7 has a plurality of inner diameter magnetic pole pairs 71 and a cylindrical inner diameter support member 72 that supports the inner diameter magnetic pole pairs 71.
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5,000 character limit. Use the arrows to translate more.be. A plurality of inner magnetic pole pairs 71 are arranged on the cylindrical outer peripheral surface of the inner magnetic field 7 along the entire circumference along the circumferential direction a in the same manner as described above.
[0016]
Although the detailed configuration will be described later, the magnetic pole piece device 1 has a plurality of magnetic pole pieces 41 (pole pieces) arranged at intervals (equal intervals) over the entire circumference in the circumferential direction a. Then, for example, when the inner diameter side magnet field 7 is rotated, the magnetic flux of the inner diameter side magnet field 7 is modulated by the magnetic pole piece 41 of the pole piece device 1, and the modulated magnetic field and the outer diameter side magnet field 5 act to A rotational torque is generated in the pole piece device 1 .
[0017]
In the embodiment shown in FIGS. 1 to 3, the magnetic gear 9 (flux modulation type magnetic gear) is integrated with the motor to form a magnetic geared motor. More specifically, in this magnetic geared motor, the outer magnet field 5 is a stator provided with a plurality of coils 6 (see FIG. 2). By rotating the magnetic field 7 (high-speed rotor), the reduction ratio determined by the ratio of the number of pole pairs of the magnetic pole pairs 51 of the outer magnetic field 5 to the number of pole pairs of the inner magnetic pole pairs 71 of the inner magnetic field 7 Accordingly, the pole piece device 1 (low speed rotor) rotates.
[0018]
In addition, a cooling medium D such as air or water is supplied to the magnetic geared motor in order to protect the above components from heat generated during operation. Specifically, as shown in FIG. 3 , cylindrical gaps are formed between the inner magnet field 7 and the pole piece device 1 and between the outer magnet field 5 and the pole piece device 1 . G are formed, and the cooling medium D is configured to be supplied to these cylindrical gaps G so as to flow from one end side to the other end side. Also, the cooling medium D is similarly supplied to the gap formed between the outer magnet field 5 and the housing H located on the outer peripheral side thereof.
A gas such as air may be supplied to the gap between the outer magnet field 5 and the housing H, or, for example, a water-cooled pipe may be installed, and cooling water or the like may flow through the water-cooled pipe. You may let
[0019]
In the magnetic gear 9 (flux modulation type magnetic gear) having the configuration described above, the magnetic pole piece device 1 described above acts between the two magnetic fields (5, 7) adjacent to each other on the inner and outer peripheral sides. In order to receive a load acting along the radial direction, such as an electromagnetic force or a centrifugal load, if the rigidity is insufficient, deformation occurs in the radial direction c. (51, 71) may interfere. Therefore, the above magnetic pole piece device 1 is configured as follows.
[0020]
Although the case where the magnetic gear 9 is a magnetic geared motor has been described as an example, the magnetic gear 9 can also operate as a magnetic geared generator. In this case, the magnetic pole piece device 1 (center rotor) rotates as the inner diameter magnet field 7 (inner rotor) rotates. Although the operation differs depending on whether the pole piece device 1 is a magnetic geared motor or a magnetic geared generator, the structure of the device is the same.
[0021]
(Configuration of magnetic pole piece device 1)
The magnetic pole piece device 1 will be described in detail below. FIG. 4A is a schematic diagram of a cross-section along the radial direction c of the pole piece device 1 according to one embodiment of the present disclosure. FIG. 4B is a diagram showing the thermal conductivity and tensile modulus of PAN-based CFRP and pitch-based CFRP in comparison with metals (copper, aluminum, iron). FIG. 5 is a schematic diagram of a cross section along the LL line in FIG. 4A along the axial direction b.
[0022]
As described above, the magnetic pole piece device 1 is a device (member) that constitutes the magnetic gear 9, which is, for example, a magnetic flux modulation type magnetic gear that constitutes a magnetic geared motor. It is a device (member) arranged between a high-speed rotor in the case of a magnetic geared motor) and the outer diameter magnet field 5 (the stator in the case of a magnetic geared motor).
[0023]
The magnetic pole piece device 1 includes an outer peripheral cover member 2 arranged to face the inner peripheral surface of the outer magnetic field 5 and an inner peripheral cover member arranged to face the outer peripheral surface of the inner magnetic field 7. 3. The outer peripheral cover member 2 and the inner peripheral cover member 3 are members each having a cylindrical shape as a whole. The inner peripheral cover member 3 has a smaller diameter than the outer peripheral cover member 2 and is coaxially arranged inside the outer peripheral cover member 2 .
[0024]
A cylindrical space 8 is formed over the entire circumference between the inner peripheral surface of the outer peripheral cover member 2 and the outer peripheral surface of the inner peripheral cover member 3 (in other words, the outer peripheral cover member 2 and the inner peripheral cover member 3 are provided so as to sandwich the cylindrical space 8). A plurality of pole piece holders 10 are provided in the cylindrical space 8 by being partitioned by wall members 20 extending along the radial direction c. The plurality of pole piece holders 10 are arranged at predetermined intervals (e.g., equal intervals) along the circumferential direction. A long magnetic pole piece 41 (pole piece) is inserted into each of the magnetic pole piece holders 10 so that the longitudinal direction thereof extends along the axial direction b.
[0025]
The wall member 20 forming the pole piece holder 10 is integrally formed with the outer peripheral cover member 2 and the inner peripheral cover member 3 . By connecting the outer cover member 2 and the inner cover member 3 to each other by the wall member 20 extending in the radial direction c, the rigidity of the pole piece device 1 can be effectively improved. For example, when the magnetic gear 9 transmits power, the magnetic pole piece device 1 is subjected to radial loads such as electromagnetic force and centrifugal force received from the outer magnet field 5 or the inner magnet field 7. Rigidity against flexural deformation and torsional deformation can be effectively improved. As a result, when the magnetic gear 9 transmits power, the magnetic pole piece device 1 is deformed and comes into contact with the outer magnet field 5 and the inner magnet field 7 arranged with the gap G therebetween. You can effectively avoid the risk of falling.
[0026]
Also, the outer peripheral cover member 2, the inner peripheral cover member 3, and the wall member 20, which are integrally formed, are integrally formed of, for example, carbon fiber reinforced plastic (CFRP). Carbon fiber reinforced plastic is a lightweight material with excellent strength reliability, and by using this, it is possible to ensure excellent rigidity while suppressing an increase in the weight of the pole piece device 1 .
[0027]
When the outer peripheral cover member 2, the inner peripheral cover member 3, and the wall member 20 are made of carbon fiber reinforced plastic, they may be configured by combining pitch-based CFRP and PAN-based CFRP depending on the application. For example, the wall member 20 may include pitch-based CFRP. Since pitch-based CFRP is superior in thermal conductivity to PAN-based CFRP, the wall member 20 adjacent to the magnetic pole pieces 41 that generate heat during operation is made of pitch-based CFRP, and the fiber orientation is oriented in the radial direction. By doing so, the heat dissipation function of the pole piece 41 can be effectively improved.
Further, when the outer peripheral cover member 2 and the inner peripheral cover member 3 are also configured to include the pitch-based CFRP, the heat generated from the magnetic pole piece 41 is transferred to the inner and outer cover members (2, 3) through the wall member 20. In addition to conducting heat, the air gaps G provided on the inner and outer peripheries of the pole piece device 1 can efficiently dissipate and cool the heat. By orienting the fibers of the outer cover member 2 and the inner cover member 3 in the circumferential direction, the rigidity of the magnetic pole piece device 1 against the electromagnetic force and centrifugal force acting on the magnetic pole piece 41 can be efficiently improved. can. Further, the fiber orientations of the outer peripheral cover member 2 and the inner peripheral cover member 3 may be combined with the fiber orientations intersecting the circumferential direction, such as ±45° with respect to the circumferential direction and the axial direction. By orienting the fibers crossing the circumferential direction, such as ±45° with respect to the axial direction, the torsional rigidity of the pole piece device 1 can be efficiently improved. Since the pitch-based CFRP has higher elasticity than the PAN-based CFRP, the centrifugal load acting on the pole piece 41 and the torque load acting on the pole piece device 1 can effectively prevent bending and torsional deformation of the pole piece device 1 . can be effectively suppressed.
[0028]
It should be noted that the CFRP carbon fibers used for the outer peripheral cover member 2, the inner peripheral cover member 3 and the wall member 20 preferably have an elastic modulus of 400 GPa, preferably 700 GPa or more. In general, the higher the elastic modulus of carbon fiber, the better the thermal conductivity. Generally, the elastic modulus is 400 GPa, which is twice that of iron. Therefore, by using the carbon fiber having the above elastic modulus, it is possible to achieve both cooling performance and high rigidity of the magnetic pole piece device 1 at a higher level. On the other hand, PAN-based CFRP has higher strength than pitch-based CFRP, as shown in FIG. 4B. Therefore, PAN-based CFRP may be used for each member of the pole piece device 1 depending on the strength required for the pole piece device 1 .
[0029]
As shown in FIG. 5, a rotor end plate 11 for outputting the power transmitted to the pole piece device 1 is fixed to the end of the pole piece device 1 in the axial direction b. A solid member 12 is provided near the end of the cylindrical space 8 in the axial direction b. The solid member 12 is made of an insulating material such as the aforementioned carbon fiber reinforced plastic or glass fiber reinforced plastic (GFRP: Glass Fiber Reinforced Plastic). The solid member 12 is configured to fill the space surrounded by the outer peripheral surface and the end surface of the rotor end plate 11 (in other words, the solid member 12 is formed on the inner peripheral surface of the outer peripheral cover member 2 and the outer peripheral surface of the inner peripheral cover member 3). , and the end face of the rotor end plate 11, respectively).
[0030]
A connection member 13 is embedded in the solid member 12 . The connecting member 13 has, for example, three threaded ends, and is fastened to the outer peripheral cover member 2, the inner peripheral cover member 3, and the rotor end plate 11, thereby connecting the three to each other with T-shaped bolts. be. As a result, the pole piece 41 held by the pole piece holder 10 is firmly fixed, and good rigidity can be obtained with a stable structure.
[0031]
As described above, the plurality of pole piece holders 10 are arranged at predetermined intervals in the cylindrical space 8 along the circumferential direction a. An inter-adjacent space 14 defined by a pair of wall members 20 is provided between adjacent pole piece holders 10 in the cylindrical space 8 . In the embodiment shown in FIGS. 5-6, the interadjacent space 14 is filled by placing a core material 15 thereon. The core material 15 is, for example, a hard polymeric foam such as urethane, polyetherimide, polyimide, or polymethacrylimide, a polymer material alone, or a composite of a polymer material and pulp fiber, aramid fiber, glass fiber, carbon fiber, or the like. It includes a lightweight non-magnetic body such as a honeycomb structure made of material. By filling the inter-adjacent space 14 with the core material 15 in this manner, the rigidity of the magnetic pole piece device 1 can be increased even when the thickness of the outer peripheral cover member 2 and the inner peripheral cover member 3 constituting the magnetic pole piece device 1 is reduced. can be enhanced more effectively.
[0032]
The outer peripheral cover member 2 and the inner peripheral cover member 3 integrally molded together with the wall member 20 may each be made of carbon fiber reinforced plastic having a plurality of layers with mutually different fiber directions. FIG. 6 is a schematic cross-sectional view showing an enlarged view of the vicinity of the outer peripheral cover member 2 and the inner peripheral cover member 3 of FIG.
[0033]
In the example shown in FIG. 6, the outer cover member 2 includes a first layer 2a whose fiber direction is the first direction and a second layer 2b whose fiber direction is the second direction. The inner peripheral cover member 3 includes a first layer 3a whose fiber direction is the first direction and a second layer 3b whose fiber direction is the second direction. The first direction is a direction parallel to the circumferential direction a, and the second direction is a direction intersecting the circumferential direction a in a plane formed by the circumferential direction a and the axial direction b. It is a direction forming ±45 degrees. The wall member 20 is made of carbon fiber reinforced plastic having a third or fourth fiber direction. The third direction is parallel to the radial direction c, and the fourth direction is the axial direction b and the radial direction. c, and is a direction that intersects with the radial direction in the plane defined by c, and is, for example, a direction forming ±45 degrees with respect to the axial direction b.
[0034]
In this way, the outer peripheral cover member 2 and the inner peripheral cover member 3 are hybrids in which a plurality of layers different from each other are combined.
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5,000 character limit. Use the arrows to translate more.By having the structure, when the magnetic gear 9 transmits power, the rigidity against bending deformation caused in the magnetic pole piece device 1 by the load received from the outer magnet field 5 or the inner magnet field 7, and the rigidity against torque transmission. Rigidity against torsional deformation can be effectively improved. In particular, since the magnetic pole piece device 1 is subjected to centrifugal force along the radial direction c due to rotation, by arranging the first layers (2a, 3b) having the fiber direction in the first direction along the circumferential direction a, , the centrifugal force in the radial direction c can be received as a hoop load by the continuous carbon fibers with high rigidity and high strength, and bending deformation of the magnetic pole piece device 1 due to the centrifugal force can be effectively suppressed. On the other hand, since the pole piece device 1 needs to transmit torque loads from one end plate to the other end plate, the second layer (2b , 3b) can effectively improve the rigidity against torsion.
[0035]
In the example of FIG. 6, the first layer 2a of the outer cover member 2 is arranged on the inner peripheral side of the second layer 2b, but the first layer 2a is arranged on the outer peripheral side of the second layer 2b. good too. Similarly, the first layer 3a of the inner peripheral cover member 3 is arranged on the outer peripheral side of the second layer 3b, but the first layer 3a may be arranged on the inner peripheral side of the second layer 3b. In the example of FIG. 6, both the outer cover member 2 and the inner cover member 3 are composed of a plurality of layers (2a, 2b, 3a, 3b). Only one of the cover members 3 may be composed of multiple layers.
[0036]
FIG. 7 is a first modified example of FIG. 5, and FIG. 8 is an enlarged view of range M in FIG. In the first modified example, the pole piece 41 held by the pole piece holder 10 includes a plurality of pole plate members 41a stacked along the axial direction b, as shown in FIG. Each of the plurality of magnetic pole plate members 41a has holes 43 provided at positions corresponding to each other, and fastening rods 44 extending along the axial direction b are inserted into the holes 43 . The ends of the fastening rods 44 are fastened to the aforementioned solid member 12 as shown in FIG. As a result, the plurality of magnetic pole plate members 41 a forming the magnetic pole pieces 41 are fixed to the rotor end plate 11 via the solid member 12 together with the outer peripheral cover member 2 and the inner peripheral cover member 3 by the fastening rods 44 . By adopting such a structure, the torsional rigidity of the pole piece device 1 can be effectively improved, the shear stress acting on the fastening portion bolt 13 and the bolt 14 can be effectively reduced, and a greater torque can be transmitted. It becomes possible.
[0037]
FIG. 9 is a second modified example of FIG. FIG. 10 is a schematic diagram of a cross section taken along line NN of FIG. 9 along the axial direction b. In the second modification, the inter-adjacent space 14 defined by the pair of wall members 20 between the adjacent pole piece holders 10 in the cylindrical space 8 is configured as a hollow space (hollow core). (In other words, the inter-adjacent space 14 is not filled with the core material 15 as in FIG. 5). Cooling holes 17 communicating with the outside are provided in the outer peripheral cover member 2 and the inner peripheral cover member 3 surrounding the inter-adjacent space 14 .
[0038]
As shown in FIG. 10, both the outer peripheral cover member 2 and the inner peripheral cover member 3 are provided with cooling holes 17 . As a result, the cooling medium D (see FIG. 3) flowing through the gap G receives centrifugal force and is drawn into the inter-adjacent space 14, which is a hollow core, through the cooling holes 17 provided in the inner peripheral cover member 3 located inside. , heat exchange with an object to be cooled (for example, the adjacent magnetic pole piece 41) in the inter-adjacent space 14, the cooling hole 17 provided in the outer peripheral cover member 2 to the outside (the gap G between the outer peripheral cover member 2 and the housing H ). By providing the cooling holes 17 in this way, a good cooling effect can be obtained by forming a flow path for the cooling medium D passing through the inter-adjacent space 14 .
[0039]
Note that the cooling holes 17 may be provided in either one of the outer peripheral cover member 2 and the inner peripheral cover member 3 .
[0040]
(Manufacturing method of magnetic pole piece device 1)
Next, a method for manufacturing the magnetic pole piece device 1 having the above configuration will be described. FIG. 11 is a flow chart that schematically illustrates a method of manufacturing a pole piece device 1 according to an embodiment of the present disclosure.
[0041]
In this manufacturing method, one of the outer peripheral cover member 2 or the inner peripheral cover member 3 constituting the magnetic pole piece device 1 and the wall member 20 are integrally formed to form the first intermediate moldings 54 and 54' (to be described later). 13 or 15) is manufactured (step S1). Then, the second intermediate products 55, 55' are manufactured by inserting the pole pieces 41 into the first intermediate products 54, 54' (step S2). Then, the other of the outer peripheral cover member 2 and the inner peripheral cover member 3 is attached to the second intermediate molded products 55 and 55', and both are integrally formed to complete the magnetic pole piece device 1 (step S3).
[0042]
First, the case where the first intermediate molded product 54 is manufactured in step S1 of FIG. manufacturing case). FIG. 12 is a flow chart showing one embodiment of the manufacturing method of FIG. 13A to 13C are schematic diagrams schematically showing the manufacturing process of the magnetic pole piece device 1 in each step of FIG.
[0043]
First, a mold 50 corresponding to the first intermediate product 54 is prepared (step S100). That is, as shown in FIG. 13A , the radially outer surface shape of the mold 50 is configured to match the radially inner surface shape of the first intermediate molded product 54 . Specifically, on the radially outer surface of the mold 50, a plurality of protrusions 50a are formed along the circumferential direction a so as to correspond to the radially inner surface shape of a first intermediate molded product 54, which will be described later. is provided.
The molding die 50 incorporates a heater 59 that can be operated when heat treatment is performed later. The heater 59 includes, for example, a plurality of heating wires provided along the radial direction a.
[0044]
Subsequently, the constituent material of the first intermediate molded product 54 is laid on the mold 50 prepared in step S100 (step S101). The constituent material laid in step S101 is, for example, a prepreg material obtained by impregnating a fiber base material such as the carbon fiber reinforced plastic described above with a thermosetting resin. Specifically, the first constituent material 60 corresponding to the wall member 20 is laid along the radially outer surface of the mold 50 . Then, a non-magnetic material 62 corresponding to the core material 15 is inserted into the concave portion 61 on the radially outer surface of the first constituent material 60 (as shown in FIG. In the case of constructing a hollow core without detaching, it is preferable to use a material that can be melted later as the non-magnetic material 62). Then, a second component material 63 corresponding to the outer peripheral cover member 2 is laid from the radially outer side of the first component material 60 into which the non-magnetic material 62 is inserted.
[0045]
Subsequently, the radially outer peripheral side of the constituent material laid on the mold 50 is covered with the vacuum bag 49 (step S102), and the rubber heater 53 is installed on the radially outer peripheral side of the vacuum bag 49 (step S103). In this state, the heater 59 and the rubber heater 53 built in the molding die 50 are operated to heat the constituent material laid on the molding die 50 and perform hardening treatment (step S104). As a result, the first intermediate molded product 54 in which the outer peripheral cover member 2 and the pole piece holder 10 are integrally formed (cocured integral molding) is completed (step S105). By integrally molding the wall surface of the pole piece holder 10 and the outer peripheral cover member 2 using the molding die 50 in this manner, the shape accuracy is improved. As a result, when inserting the pole piece 41 into the pole piece holder 10, the work of finely adjusting the pole piece holder 10 by additional machining is not necessary.
[0046]
Subsequently, as shown in FIG. 13B, the magnetic pole pieces 41 are inserted into the recesses corresponding to the pole piece holders 10 in the first intermediate molded product 54 removed from the mold 50 (step S106), and the second intermediate molded product 55 is manufactured (step S107).
[0047]
When the same material as the outer cover member 2 and the wall member 20 is used for the magnetic pole piece 41, the magnetic pole piece 41 inserted in step S106 is integrally molded together with the outer cover member 2 and the wall member 20 in steps S101 to S105. You may That is, when integrally molding the first intermediate molded product 54 , the second intermediate molded product 55 includes the outer peripheral cover member 2 and the wall member 20 that constitutes the pole piece holder 10 and the magnetic pole piece 41 that is inserted into the magnetic pole piece holder 10 . Manufactured by integrally molding with In this case, the magnetic pole piece device 1 can be manufactured more easily by integrally molding the magnetic pole pieces 41 in addition to the outer peripheral cover member 2 and the wall member 20 .
[0048]
Subsequently, as shown in FIG. 13C, a constituent material 64 corresponding to the inner peripheral cover member 3 is laid on the radially inner peripheral surface of the second intermediate molded product 55 (step S108). The constituent material 64 laid in step S108 is the same as the constituent material laid in step S101. For example, a prepreg material obtained by impregnating a fiber base material such as carbon fiber reinforced plastic or the like with a thermosetting resin is used. . Then, the radially inner peripheral side of the material laid in step S108 is covered with the vacuum bag 56 (step S109), and the rubber heater 57 is installed on the inner peripheral side of the vacuum bag 56 (step S110). In such a state, the rubber heater 57 arranged in step S110 is operated to perform the curing process (step S111). As a result, the inner peripheral cover member 3 is integrally molded with the second intermediate molded product 55 to complete the magnetic pole piece device 1 . By using the second intermediate molded product 55 in which the magnetic pole piece 41 is inserted into the first intermediate molded product 54 as described above as a substantially new molding die, the inner peripheral cover member 3 is further integrally molded, whereby the inner peripheral cover member 3 In addition to improving the shape accuracy, extra processing and bonding processes are no longer required, and productivity can be improved and costs can be reduced.
[0049]
Note that in step S108, cobond molding may be performed by laying the constituent material 64 corresponding to the inner peripheral cover member 3 after interposing an adhesive between the second intermediate molded product 55 and the second intermediate molded product 55 .
[0050]
Next, a description will be given of a case in which the first intermediate molded product 54 is manufactured in step S1 of FIG. A case of manufacturing from the peripheral side will be explained). FIG. 14 is a flow chart showing another embodiment of the manufacturing method of FIG. 15A to 15C are schematic diagrams schematically showing the manufacturing process of the magnetic pole piece device 1 in each step of FIG.
[0051]
First, a forming die 50' corresponding to the first intermediate product 54' is prepared (step S200). That is, as shown in FIG. 15A, the radially inner surface shape of the mold 50' is configured to match the radially outer surface shape of the first intermediate molded product 54'. Specifically, a plurality of protrusions 50a' are formed on the radially inner surface of the mold 50' in the circumferential direction a so as to correspond to the radially outer surface shape of a first intermediate molded product 54', which will be described later. are set along.
The molding die 50' incorporates a heater 59' that can be operated when heat treatment is performed later. The heater 59' includes, for example, a plurality of heating wires provided along the radial direction a.
[0052]
Subsequently, the constituent material of the first intermediate molded product 54' is laid on the mold 50' prepared in step S200 (step S201). The constituent material laid in step S201 is, for example, a prepreg material obtained by impregnating a fiber base material such as the carbon fiber reinforced plastic described above with a thermosetting resin. Specifically, a first constituent material 60' corresponding to the wall member 20 is laid along the radially inner surface of the mold 50'. Then, a non-magnetic material 62' corresponding to the core material 15 is inserted into the concave portion 61' on the radially outer surface of the first constituent material 60' (as shown in FIG. In the case of constructing a hollow core without filling 15, it is preferable to use a material that can be melted later as the non-magnetic material 62'). Then, a second component material 63' corresponding to the outer peripheral cover member 2 is laid from the radially inner side of the first component material 60' into which the non-magnetic material 62' is inserted.
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[0053]
Subsequently, the radially inner side of the constituent material laid on the mold 50' is covered with the vacuum bag 49' (step S202), and the rubber heater 53' is further installed radially inside the vacuum bag 49' (step S203). . In such a state, the heater 59' and the rubber heater 53' built in the mold 50' are operated to heat the constituent material laid on the mold 50' and perform a hardening treatment (step S204). ). As a result, the first intermediate molded product 54' in which the inner peripheral cover member 3 and the pole piece holder 10 are integrally formed (cocured integral molding) is completed (step S205). By integrally molding the wall surface of the pole piece holder 10 and the inner peripheral cover member 3 using the molding die 50' in this manner, the shape accuracy is improved. As a result, when inserting the pole piece 41 into the pole piece holder 10, the work of finely adjusting the pole piece holder 10 by additional machining is not required.
[0054]
Subsequently, as shown in FIG. 15B, the pole pieces 41 are inserted into the recesses corresponding to the pole piece holders 10 in the first intermediate molded product 54' taken out from the mold 50' (step S206), and the second intermediate molded product 54' is inserted. A molding 55' is manufactured (step S207).
[0055]
If the same material as the inner peripheral cover member 3 and the wall member 20 is used for the magnetic pole piece 41, the magnetic pole piece 41 inserted in step S206 is inserted together with the inner peripheral cover member 3 and the wall member 20 in steps S201 to S205. It may be integrally molded. That is, when the second intermediate molded product 55 is integrally molded with the first intermediate molded product 54, the inner peripheral cover member 3 is used as the wall member 20 constituting the pole piece holder 10 and the magnetic pole piece inserted into the pole piece holder 10. It is manufactured by integrally molding with 41 . In this case, the magnetic pole piece device 1 can be manufactured more easily by integrally molding the magnetic pole piece 41 in addition to the inner peripheral cover member 3 and the wall member 20 .
[0056]
Subsequently, as shown in FIG. 15C, a constituent material 64' corresponding to the outer peripheral cover member 2 is laid on the radially outer surface of the second intermediate molded product 55' (step S208). The constituent material 64' laid in step S208 is the same as the constituent material laid in step S201. be done. Then, the radially outer side of the material laid in step S208 is covered with a vacuum bag 56' (step S209), and a rubber heater 57' is installed on the outer peripheral side of the vacuum bag 56' (step S210). In such a state, the rubber heater 57' arranged in step S210 is operated to perform the curing process (step S211). As a result, the outer peripheral cover member 2 is integrally formed with the second intermediate molded product 55', and the magnetic pole piece device 1 is completed. By using the second intermediate molded product 55' in which the magnetic pole piece 41 is inserted in the first intermediate molded product 54' as described above as a substantially new molding die, the outer peripheral cover member 2 is further integrally molded. In addition to improving the shape accuracy, extra processing and bonding processes are no longer required, and productivity can be improved and costs can be reduced.
[0057]
In step S208, cobond molding may be performed by laying the constituent material 64' corresponding to the outer peripheral cover member 2 after interposing an adhesive between the second intermediate molded product 55'.
[0058]
As described above, according to the above-described embodiments, it is possible to provide the magnetic pole piece device 1 of the magnetic gear 9 having high rigidity, the magnetic gear 9, and the method of manufacturing the magnetic pole piece device 1 of the magnetic gear 9. .
[0059]
Next, several configuration examples of the core material 15 filled in the inter-adjacent space 14 of the pole piece holder 10 of the pole piece device 1 will be described. 16A to 16C are perspective views showing configuration examples of the core material 15. FIG.
[0060]
16A to 16C, the core material 15 is configured with a core body 15a and a first cover member 15b that at least partially surrounds the core body 15a. The first cover member 15b is provided so as to at least partially surround the core body 15a extending along the axial direction. In Figures 16A-16C, the first cover member 15b is a single elongated member that is wound around the entire circumference of the core body 15a.
[0061]
In the embodiment shown in Figure 16A, the core body 15a is configured as a solid foam core. The foam core is made of a lightweight non-magnetic material such as those described above, for example, hard polymer foam such as urethane, polyetherimide, polyimide, and polymethacrylimide, polymer material alone, polymer material and pulp fiber, or aramid fiber. , glass fiber, carbon fiber, and the like.
[0062]
The first cover member 15b is a fiber reinforced resin, such as carbon fiber reinforced plastic (CFRP), glass fiber reinforced plastic (GFRP), aramid fiber reinforced plastic (AFRP). , Basalt Fiber Reinforced Plastics (BFRP), Boron Fiber Reinforced Plastics (BFRP), Kevlar Fiber Reinforced Plastics (KFRP), Vectran Fiber Reinforced Plastics (VFRP) Plastics), etc.
[0063]
In the manufacturing process of the core member 15 as described above, when the first cover member 15b is made of fiber-reinforced plastic, a prepreg material obtained by impregnating a fiber base material with a thermosetting resin is arranged around the core member 15a. In this state, the first cover member 15b is attached to the outer peripheral cover member 2 and the inner peripheral cover member 3, and the hardening treatment is performed simultaneously with the outer peripheral cover member 2 and the inner peripheral cover member 3, so that the first cover member 15b becomes the outer peripheral cover member 2 and the inner peripheral cover member 3. It can be configured integrally with the peripheral cover member 3 . As a result, good structural strength can be obtained, and in particular, weight reduction and improvement in workability during manufacturing can be expected while maintaining axial rigidity and torsional rigidity against torque transmission.
[0064]
In another embodiment, as shown in FIG. 17A, the first cover member 15b is divided for each surface of the core body 15a having a substantially square cross-sectional shape in a cross section perpendicular to the axial direction, and each surface The first cover member 15b may be configured by being attached to. In another embodiment, as shown in FIG. 17B, the first cover member 15b has two substantially U-shaped cover members 15b1 and 15b2 covering the core body 15a from both sides in a cross section perpendicular to the axial direction. It may be constructed by splicing as follows. In this case, as shown in FIG. 17B, the locations where the cover member 15b1 and the cover member 15b2 are spliced are the outer splice location 16a provided on the side of the first cover member 15b facing the outer cover member 2 and the inner splice location 16a. The inner splice point 16b provided on the side facing the cover member 3 may also be set. In this case, continuity of load transmission from the first cover member 15b to the outer cover member 2 or the inner cover member 3 is not impaired. Further, in the first cover member 15b, by avoiding wrapping on the outer cover member 2 or the inner cover member 3 side, it is possible to avoid falling off of handling and to improve the surface roughness of the outer cylinder after hardening.
[0065]
In the embodiment shown in FIG. 16B, the core body 15a is constructed as a solid member made of fiber-reinforced plastic. By forming the core body 15a from fiber-reinforced plastic in this way, the core body 15a itself can have rigidity in the axial direction and torsional rigidity against torque transmission due to the lamination orientation. Fiber-reinforced plastics include, for example, Pitch-based, PAN-based carbon fibers, glass fibers, polymer fibers, etc., and resins such as thermosetting resins such as epoxy, polyester, phenol, bismaleimide, and polyurethane, and thermoplastic resins such as polyimide and PP. , polyethylene, polyvinyl chloride, polystyrene, polyetherimide, and nylon can be used.
[0066]
In the embodiment shown in FIG. 16B, the first cover member 15b may be configured as a resin sheet containing film adhesive, for example. The core body 15a made of fiber-reinforced plastic is machined from, for example, a laminated plate. The shape of the machined core body 15a can be favorably adapted to realize an integral structure with good rigidity.
[0067]
In the embodiment shown in FIG. 16C, the core body 15a is made of fiber-reinforced plastic as in the embodiment shown in FIG. have. By adopting the core body 15a having such a hollow structure, the weight of the pole piece device can be reduced. It is also possible to improve the cooling performance of the pole piece device 1 by introducing a cooling medium into the hollow portion 15a1.
[0068]
Such a hollow portion 15a1 can be easily formed by, for example, arranging a fiber-reinforced resin prepreg around a core material having a shape corresponding to the hollow portion 15a1, performing a curing process, and then removing the core material. is.
[0069]
In this embodiment, the cross-sectional shape of the hollow portion 15a1 is substantially rectangular, but the cross-sectional shape of the hollow portion 15a may be any shape such as circular or polygonal. Further, in this embodiment, the core body 15a has one hollow portion 15a1, but may have a plurality of hollow portions 15a1.
[0070]
Next, a configuration example of the pole piece 41 held by the pole piece holder 10 will be described. FIG. 18 is a perspective view showing a configuration example of the pole piece 41 held by the pole piece holder 10. FIG.
[0071]
In the embodiment shown in FIG. 18, the pole piece 41 is configured with a pole piece body 41a and a second cover member 41b that at least partially surrounds the pole piece body 41a. The second cover member 41b may be provided so as to partially surround the pole piece body 41a on a cross section perpendicular to the axial direction, or may be provided so as to surround the entire circumference of the pole piece body 41a. good too.
[0072]
The second cover member 41b is, for example, a film adhesive such as epoxy resin, a fiber-reinforced resin prepreg such as KFRP, or a combination thereof. As a result, the second cover member 41b is interposed between the h magnetic pole piece main body 41 and the outer cover member 2 or the inner cover member 3, so that the shear strength between them can be effectively improved.
[0073]
Also, the second cover member 41b may be configured as an elastic member such as a silicon sheet or a rubber sheet. In this case, due to the damping effect of the second cover member 41b, the vibration generated in the magnetic pole piece device 1 can be effectively damped. A similar effect can be expected when a Kevlar fiber reinforced prepreg having vibration damping properties is used as the second cover member 41b.
[0074]
Also, the second cover member 41b may be configured as a foam sheet. In this case, since the foam sheet is flexible and its thickness can be adjusted, when the pole pieces 41 are assembled to the outer cover member 2 or the inner cover member 3, the gap between the two due to dimensional tolerances is eliminated. can be filled and interference can be absorbed, facilitating the assembly of the pole piece device 1 . Furthermore, even if there is a difference in thermal expansion between the magnetic pole piece 41 and the surrounding structure when heated during manufacturing or operation, the second cover member 41b can alleviate the difference, so peeling of the interface can be effectively prevented. can be avoided.
[0075]
FIG. 18 shows the case where a single second cover member 41b is wound around the pole piece main body 41a. In this case, the prepreg to be the second cover member 41b is wound around the magnetic pole piece main body 41a.
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5,000 character limit. Use the arrows to translate more.Then, it is assembled to the outer cover member 2 and the inner cover member 3, and these are integrally cured, so that the second cover member 41b is integrated with the outer cover member 2 and the inner cover member 3 with good adhesive strength. It is possible to improve the rigidity and simplify the manufacturing process.
[0076]
The second cover member 41b follows the first cover member 15b and is attached by cutting the magnetic pole piece body 41a so as to correspond to each surface of the magnetic pole piece main body 41a, which has a substantially square shape in a cross section perpendicular to the axial direction. Alternatively, they may be attached in a substantially U shape (so as to cover the remaining surfaces except one surface) and spliced.

we claims

[Claim 1]
an outer peripheral cover member and an inner peripheral cover member that are coaxially arranged on the radially outer side and inner side of the magnetic gear, respectively, and have a cylindrical shape;
A magnetic pole piece formed by partitioning a cylindrical space formed between an inner peripheral surface of the outer peripheral cover member and an outer peripheral surface of the inner peripheral cover member with a wall member extending along the radial direction. a holder;
a magnetic pole piece held by the magnetic pole piece holder;
with
A magnetic pole piece device for a magnetic gear, wherein the inner ring member, the outer ring member and the wall member are integrally formed.
[Claim 2]
2. The magnetic gear according to claim 1, wherein said outer peripheral cover member and said inner peripheral cover member are fixed to the rotor end plate via a connecting member embedded in a solid member arranged in said cylindrical space. Magnetic pole piece device.
[Claim 3]
3. The magnetic gear magnetic pole piece device according to claim 2, wherein said solid member has a complementary shape that can be engaged with an uneven shape provided at the end of said rotor end plate.
[Claim 4]
The magnetic gear pole piece device according to claim 2 or 3, wherein the solid member has at least one metal pad provided on the end face facing the rotor end plate.
[Claim 5]
The magnetic pole piece device of the magnetic gear according to any one of claims 2 to 4, wherein the solid member and the rotor end plate are provided with a guide bush provided along the connecting bolt.
[Claim 6]
The magnetic pole piece includes a plurality of magnetic pole plate materials laminated along the axial direction,
6. The plurality of magnetic pole plates according to any one of claims 2 to 5, wherein the plurality of magnetic pole plates are fixed to the solid member via fastening rods that pass through holes provided in each of the plurality of magnetic pole plate materials. Magnetic gear pole piece device.
[Claim 7]
The magnetic pole piece device for a magnetic gear according to any one of claims 1 to 6, wherein the outer peripheral cover member, the inner peripheral cover member and the wall member each contain carbon fiber reinforced plastic.
[Claim 8]
At least one of the outer peripheral cover member and the inner peripheral cover member includes a first layer in which the fiber direction contained in the carbon fiber reinforced plastic has a first direction along the circumferential direction, and the fiber direction is the first direction. 8. A magnetic gear pole piece assembly according to claim 7, comprising a second layer having a second direction transverse to .
[Claim 9]
The magnetic pole piece device for a magnetic gear according to claim 7 or 8, wherein the wall member includes pitch-based CFRP.
[Claim 10]
The magnetic pole piece device of the magnetic gear according to any one of claims 1 to 9, further comprising a core material filling an inter-adjacent space formed between adjacent said pole piece holders in said cylindrical space.
[Claim 11]
The core material is
the core body and
a first cover member that at least partially surrounds the core body;
11. The magnetic tooth of claim 10, comprising
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5,000 character limit. Use the arrows to translate more.Car pole piece device.
[Claim 12]
12. The magnetic pole piece of the magnetic gear according to claim 10, wherein a damping member for damping vibration is provided on at least part of the surface of the core material facing the outer cover member or the inner cover member. Device.
[Claim 13]
The magnetic gear pole piece device according to any one of claims 1 to 12, wherein a damping member is provided to at least partially cover the outer surface of at least one of the outer cover member or the inner cover member.
[Claim 14]
The magnetic gear pole piece device according to any one of claims 10 to 13, wherein a damping member is provided to at least partially surround the core material.
[Claim 15]
The inter-adjacent space formed between the adjacent magnetic pole piece holders in the cylindrical space is formed as a hollow core,
10. The hollow core according to any one of claims 1 to 9, wherein the hollow core communicates with the outside through a cooling hole opened in at least one of the outer peripheral cover member and the inner peripheral cover member along the radial direction. magnetic gear pole piece device.
[Claim 16]
The magnetic pole pieces are
the main body of the magnetic pole piece,
a second cover member that at least partially surrounds the pole piece body;
16. A magnetic gear pole piece arrangement according to any one of claims 1 to 15, comprising:
[Claim 17]
The fiber direction of the outer cover member, the inner cover member, and the fiber reinforced plastic forming at least a part of the wall member is set so that the coefficient of thermal expansion is close to that of the pole piece. 17. A magnetic gear pole piece arrangement according to any one of claims 16 to 17.
[Claim 18]
the pole piece device according to any one of claims 1 to 17;
an inner diameter side magnetic field arranged on the inner peripheral side of the magnetic pole piece device;
an outer diameter side magnetic field arranged on the outer peripheral side of the magnetic pole piece device;
a magnetic gear.
[Claim 19]
an outer peripheral cover member and an inner peripheral cover member that are coaxially arranged on the radially outer side and inner side of the magnetic gear, respectively, and have a cylindrical shape;
A magnetic pole piece formed by partitioning a cylindrical space formed between an inner peripheral surface of the outer peripheral cover member and an outer peripheral surface of the inner peripheral cover member with a wall member extending along the radial direction. a holder;
a magnetic pole piece held by the magnetic pole piece holder;
with
A method of manufacturing a magnetic pole piece device for a magnetic gear, wherein the inner ring member, the outer ring member and the wall member are integrally formed,
a step of manufacturing a first intermediate molded product by integrally molding one of the outer peripheral cover member and the inner peripheral cover member with the wall member;
a step of manufacturing a second intermediate product by inserting the magnetic pole piece into a recess formed between the adjacent wall members of the first intermediate product;
a step of integrally molding by attaching the other of the outer peripheral cover member or the inner peripheral cover member to the second intermediate molded product;
A method of manufacturing a magnetic gear pole piece device, comprising:
[Claim 20]
The second intermediate molded product is manufactured by integrally molding one of the outer peripheral cover member and the inner peripheral cover member with the wall member and the magnetic pole pieces when integrally molding the first intermediate molded product. 20. The manufacturing method of the magnetic gear pole piece device according to claim 19.