Magnetic pole piece panel unit, magnetic pole piece rotor, and magnetic gear electromachine

Abstract

To provide a pole piece panel unit of which the vibration prevention function is improved, a pole piece rotor, and a magnetic gear electric machine.SOLUTION: A pole piece panel unit comprises: a first pole piece panel including a first circumferential end which is an end at one side in a circumferential direction; and a second pole piece panel including a second circumferential end which is an end at the other side in the circumferential direction, the second pole piece panel being adjacent to the first pole piece panel in the circumferential direction. The first circumferential end includes a first main body extending in an axial direction and a first protrusion protruding from the first main body to one side in the circumferential direction. The second circumferential end includes a second main body extending in the axial direction and a second protrusion protruding from the second main body to the other side in the circumferential direction and being disposed side by side with the first protrusion in a radial direction. The pole piece panel unit further comprises a fixture member including a shaft, which is inserted through a first insertion hole formed in the first protrusion and a second insertion hole formed in the second protrusion, and fixed to the first protrusion and the second protrusion.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure relates to a pole piece panel unit, a pole piece rotor, and a magnetic gear electric machine.

Background Art

[0002] Conventionally, a pole piece panel unit incorporated in a pole piece rotor of a magnetic gear electric machine is known. The pole piece panel unit is composed of a plurality of pole piece panels arranged in the circumferential direction, and each pole piece panel includes a plurality of pole pieces and a plurality of non-magnetic bodies alternately arranged along the circumferential direction (see, for example, FIG. 19 of Patent Document 1). Each pole piece has a function of modulating magnetic flux.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Various forces directed in the radial direction, such as electromagnetic forces generated during magnetic flux modulation or centrifugal forces generated during rotation of the pole piece rotor, act on the pole piece panel. At least one of these forces becomes an excitation force of the pole piece panel, inducing vibration of the pole piece panel and potentially damaging the pole piece panel unit. For example, when the magnetic gear is driven, the pole piece panel unit may resonate, causing damage between adjacent pole piece panels.

[0005] An object of the present disclosure is to provide a pole piece panel unit, a pole piece rotor, and a magnetic gear electric machine with improved vibration prevention functions.

Means for Solving the Problems

[0006] A pole piece panel unit according to at least one embodiment of this disclosure is, A pole piece panel unit comprising multiple pole piece panels, each containing multiple pole pieces and multiple non-magnetic materials arranged alternately along the circumferential direction with respect to an axis, A first pole piece panel including a first circumferential end which is one end in the circumferential direction, A second pole panel adjacent to the first pole panel in the circumferential direction, the second pole panel including a second circumferential end which is the other end in the circumferential direction, Equipped with, The first peripheral end is, A first main body extending in the axial direction, It has a first projection that protrudes from the first main body portion to one side in the circumferential direction, The second peripheral end is, The second main body portion extending in the axial direction, It has a second projection that protrudes from the second main body portion on the other side in the circumferential direction and is aligned radially with the first projection, The device further includes a fixing member that is fixed to the first and second protrusions, and includes a shaft portion that is inserted through a first insertion hole formed in the first protrusion and a second insertion hole formed in the second protrusion.

[0007] A pole piece panel unit according to at least one embodiment of this disclosure is, The above-mentioned pole piece panel unit, A first connecting portion is connected to one end of the magnetic pole piece panel unit in the axial direction and to the rotating shaft of the magnetic gear electromachine, The other end of the magnetic pole piece panel unit in the axial direction and the second connecting portion connected to the rotation axis It is equipped with.

[0008] A magnetic gear electromachine according to at least one embodiment of the present disclosure is The above-mentioned pole rotor, A rotor comprising a plurality of rotor magnets arranged in the circumferential direction on the radially inner or outer side of the magnetic pole panel unit, A stator including a plurality of stator magnets arranged in the circumferential direction on the side opposite to the plurality of rotor magnets with the pole piece panel unit interposed therebetween is provided.

Advantages of the Invention

[0009] According to the present disclosure, it is possible to provide a pole piece panel unit with improved vibration damping function, a pole piece rotor, and a magnetic gear electric machine.

Brief Description of the Drawings

[0010] [Figure 1] It is a schematic diagram of a magnetic gear electric machine according to an embodiment. [Figure 2] It is a schematic diagram of a pole piece rotor according to an embodiment. [Figure 3] It is a schematic diagram showing a pole piece panel unit according to an embodiment. [Figure 4] It is a schematic diagram showing a cross section of a pole piece panel unit according to an embodiment. [Figure 5] It is a schematic diagram of a pole piece panel unit according to some embodiments. [Figure 6A] It is a schematic diagram of a fixing member according to the first embodiment (first illustration). [Figure 6B] It is a schematic diagram of a fixing member according to the first embodiment (second illustration). [Figure 7] It is a schematic diagram of a fixing member according to the second embodiment. [Figure 8] It is a schematic diagram showing a method of assembling a pole piece panel unit according to an embodiment.

Modes for Carrying Out the Invention

[0011] Hereinafter, some embodiments of the present disclosure will be described 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 disclosure, but are merely illustrative examples. For example, expressions representing relative or absolute arrangements such as "in a certain direction", "along a certain direction", "parallel", "orthogonal", "center", "concentric", or "coaxial" not only precisely represent such arrangements, but also represent states with tolerances or relatively displaced by angles or distances that achieve the same function. For example, expressions representing a state where things such as "identical", "equal", and "homogeneous" are equal not only precisely represent an equal state, but also represent states with tolerances or differences that achieve the same function. For example, expressions representing shapes such as a rectangular shape or a cylindrical shape not only represent shapes such as a rectangular shape or a cylindrical shape in a geometrically precise sense, but also represent shapes including concavo-convex portions, chamfered portions, etc. within a range where the same effect can be obtained. On the other hand, expressions such as "comprising", "including", or "having" a component do not exclude the existence of other components. Note that the same reference numerals may be used for similar configurations and the description may be omitted.

[0012] <1. Overview of the Magnetic Gear Electrical Machine 1> FIG. 1 is a schematic view of a magnetic gear electrical machine 1 according to an embodiment of the present disclosure. The magnetic gear electrical machine 1 includes a rotating shaft 5 connected to an external rotating device 7. In the following description, the "circumferential direction" is the circumferential direction based on the axis S of the rotating shaft 5, the "axial direction" is the axial direction of the axis S, and the "radial direction" is the radial direction based on the axis S. The "inner side in the radial direction" indicates the direction approaching the axis S side, and the "outer side in the radial direction" indicates the direction moving away from the axis S. Note that the axis S is also the axis of the pole piece panel unit 50 described later.

[0013] The magnetic gear electromachine 1 comprises a housing 9 that rotatably supports a rotating shaft 5, and a magnetic pole rotor 30 connected to the rotating shaft 5 inside the housing 9. The magnetic pole rotor 30 includes a cylindrical magnetic pole panel unit 50 extending along an axis S, a first connecting portion 31 connected to one end 51 of the magnetic pole panel unit 50 in the axial direction and the rotating shaft 5, and a second connecting portion 32 connected to the other end 52 of the magnetic pole panel unit 50 in the axial direction and the rotating shaft 5. The magnetic pole panel unit 50 has a plurality of magnetic pole pieces 55 and a plurality of non-magnetic materials 53 (see Figure 2) arranged alternately along the circumferential direction. In the example of Figure 1, both the first connecting portion 31 and the second connecting portion 32 are fixed to the rotating shaft 5, and the magnetic pole rotor 30 is configured to rotate integrally with the rotating shaft 5 (other configuration examples will be described later).

[0014] The magnetic gear electromachine 1 further comprises a rotor 15. The rotor 15 has a plurality of rotor magnets 19 arranged circumferentially inside the magnetic pole panel unit 50 in the radial direction, and a rotor core 16 that supports the rotor magnets 19. In the example of Figure 1, the rotor core 16 is connected to the rotating shaft 5 via bearings, and the rotor 15 rotates relative to the rotating shaft 5. The rotor 15 faces the magnetic pole panel unit 50 radially with an air gap G1 in between. In the example of Figure 1, a surface permanent magnet (SPM) configuration is adopted in which the plurality of rotor magnets 19 are provided on the surface of the rotor core 16, but an interior permanent magnet (IPM) configuration in which the plurality of rotor magnets 19 are arranged inside the rotor core 16 may also be adopted.

[0015] The magnetic gear electromachine 1 comprises a stator 20 supported by a housing 9. The stator 20 includes a plurality of stator magnets 29 arranged circumferentially on the opposite side of a plurality of rotor magnets 19, with a magnetic pole panel unit 50 in between; a stator core 25 supporting the stator magnets 29; and a stator coil 27 wound around the stator core 25. The stator coil 27 is electrically connected to a power system 6. The stator 20 faces the magnetic pole panel unit 50 radially with an air gap G2 in between. In the example in Figure 1, an SPM type configuration is adopted in which the plurality of stator magnets 29 are provided on the surface of the stator core 25, but an IPM type configuration in which the stator magnets 29 are arranged inside the stator core 25 may also be adopted.

[0016] Although not an essential component of this disclosure, the magnetic gear electromachine 1 includes a fan 3 for supplying cooling air. For example, the fan 3 is fixed to a rotating shaft 5 inside the housing 9, and the rotation of the fan 3 causes cooling air to circulate inside the housing 9. The cooling air passages include axially extending air gaps G1 and G2. In addition, holes (not shown) penetrating the stator core 25 axially, or holes (not shown) penetrating the rotor core 16 axially, may be provided, and these holes may be used as cooling air passages. Furthermore, axially extending cooling air passages may be additionally provided as components of the housing 9 radially outside the stator core 25.

[0017] One embodiment of the magnetic gear electric machine 1 is a magnetic gear motor that receives power from a power system 6 to drive an external rotating device 7. The operating principle is as follows: The rotor 15 rotates due to the rotating magnetic field generated by energizing the stator coil 27. The relative positional relationship of the magnetic pole piece panel unit 50 with respect to the multiple rotor magnets 19 and multiple stator magnets 29 changes, and the magnetic flux between the rotor 15 and the stator 20 is modulated by the multiple magnetic pole pieces 55, causing the magnetic pole piece rotor 30 to rotate. Torque is transmitted from the rotating shaft 5, which rotates together with the magnetic pole piece rotor 30, to the external rotating device 7, and the external rotating device 7 is driven.

[0018] Another embodiment of the magnetic gear electric machine 1 is a magnetic gear generator. In this case, the external rotating device 7 drives the rotating shaft 5, causing the magnetic pole rotor 30 to rotate together with the rotating shaft 5. The relative positional relationship between the multiple rotor magnets 19 and the multiple stator magnets 29 changes, causing the rotor 15 to rotate. Electromagnetic induction caused by the rotation of the magnetic pole rotor 30 and the rotor 15 generates a current in the stator coil 27, which is then supplied to the power system 6.

[0019] Furthermore, if we let NL be the number of magnetic poles of the pole piece 55, NH be the number of pole pairs in the rotor magnet 19, and NS be the number of pole pairs in the stator magnet 29, then the relationship NL = NH + NS holds true. When this relationship holds, the ratio of the rotational speed of the rotor 15 to the rotational speed of the pole piece rotor 30 is expressed as NL / NH. In this example, NL / NH is greater than 1, so the rotor 15 functions as a high-speed rotor, and the pole piece rotor 30 functions as a low-speed rotor. Note that the number of magnetic poles NL of the pole piece 55 is less than the number of pole pairs NS of the stator magnet 29.

[0020] When the magnetic gear electromachine 1 is driven, the fan 3 rotates together with the rotating shaft 5, causing cooling air to flow through the air gaps G1 and G2. This cooling air cools the magnetic pole panel unit 50, the rotor 15, the stator 20, or the various bearings located inside the housing 9. The arrows A1 and A2 shown in the enlarged view of Figure 1 illustrate the direction of the cooling air flow in the air gaps G1 and G2.

[0021] The magnetic gear electromachine 1 of this disclosure is not limited to the above embodiments. The first connecting portion 31 and the second connecting portion 32 of the magnetic pole rotor 30 may each be connected to the rotating shaft 5 via a pair of bearings. In this case, the rotor core 16 is fixed to the rotating shaft 5, and the rotor 15 is configured to rotate integrally with the rotating shaft 5. Furthermore, only one of the first connecting portion 31 or the second connecting portion 32 may be connected to the rotating shaft 5, and the other connecting portion may be connected to an external rotating device 7 (not shown) which is a power transmission shaft (the power transmission shaft is configured to transmit torque with the rotating shaft 5). Also, this disclosure is not limited to the fan 3 being fixed to the rotating shaft 5. Detailed illustrations are omitted, but for example, a motor to which the fan 3 is fixed on the output shaft may be fixed to the outer circumferential surface of the housing 9. In this case, cooling air sent from the fan 3 may enter the inside of the housing 9 through a communication port that connects the inside and outside of the housing 9.

[0022] Furthermore, the pole piece rotor 30 may be positioned radially outward relative to the pole piece panel unit 50, in which case the stator 20 is positioned radially inward relative to the pole piece panel unit 50. However, the following description will describe an embodiment in which the rotor 15 is positioned radially inward relative to the pole piece panel unit 50 and the stator 20 is positioned radially outward relative to the pole piece panel unit 50.

[0023] <2. Details of the configuration of the magnetic pole rotor 30> Figure 2 is a schematic diagram of a pole piece rotor 30 according to one embodiment of the present disclosure. Figure 3 is a schematic diagram of a pole piece panel unit 50 according to one embodiment of the present disclosure. The pole piece rotor 30 is configured to rotate about an axis S.

[0024] As shown in Figure 2, the first connecting portion 31 has a ring portion 37 extending in the circumferential direction, an axial connecting portion 38 connected to the rotating shaft 5 (see Figure 1), and an extending portion 39 extending radially inward from the ring portion 37 toward the axial connecting portion 38. The second connecting portion 32 has a shape axially symmetric to that of the first connecting portion 31. That is, the second connecting portion 32 also has a ring portion 37, an axial connecting portion 38, and an extending portion 39.

[0025] As described above, the pole piece panel unit 50 includes a plurality of pole pieces 55 and a plurality of non-magnetic materials 53 arranged alternately along the circumferential direction. Each pole piece 55 and each non-magnetic material 53 extends in the axial direction. Each non-magnetic material 53 is longer in the axial direction than each pole piece 55. The non-magnetic materials 53 are formed from fiber-reinforced plastics (FRP). The FRP may be, for example, glass fiber reinforced plastics (GFRP) or carbon fiber reinforced plastics (CFRP). Each pole piece 55 may be formed from a plurality of electromagnetic steel sheets laminated in the axial direction, or from a plurality of powdered magnetic cores extending in the axial direction, or from a combination of electromagnetic steel sheets and powdered magnetic cores.

[0026] Although not essential components of this disclosure, the pole piece panel unit 50 further comprises a plurality of insulators 54. Each insulator 54 is connected to the axial end of each pole piece 55. The pole piece 55 and the pair of insulators 54 arranged on both sides of the pole piece 55 in the axial direction form a pole piece elongated unit. The pole piece elongated unit has approximately the same axial length as the non-magnetic material 53. The plurality of alternately arranged pole piece elongated units and the plurality of non-magnetic material 53 form a ring unit that extends in the circumferential direction. The ring unit corresponds to the main body of the pole piece panel unit 50. A pair of end rings 56 are connected to both axial ends of this ring unit. In the example of Figure 2, the pair of end rings 56 each constitute one end 51 and the other end 52 of the pole piece panel unit 50 in the axial direction. The pair of end rings 56 are each connected to a pair of ring portions 37. Note that the pair of end rings 56 are not essential components of this disclosure. For example, both axial ends of the ring unit described above may be connected to a pair of ring portions 37.

[0027] Figure 3 is a schematic diagram showing a part of a pole piece panel unit 50 according to one embodiment of the present disclosure. The pole piece panel unit 50 having the above configuration comprises a plurality of pole piece panels 60 arranged in the circumferential direction (see also Figure 8). Each pole piece panel 60 is a curved panel extending in the circumferential direction. A ring-shaped pole piece panel unit 50 is formed by joining two circumferentially adjacent pole piece panels 60 with a fixing member 120 described later. The plurality of pole pieces 55, the plurality of non-magnetic materials 53, and the plurality of insulators 54 described above are incorporated into each pole piece panel 60. Furthermore, each of the pair of end rings 56 described above is composed of a plurality of end plates 59 arranged in the circumferential direction. The pair of end plates 59 constitute both ends of each pole piece panel 60 in the axial direction. The end plates 59 are plates that extend in the circumferential direction and have thickness in the axial direction.

[0028] In Figure 3, two circumferentially adjacent pole panel panels 60 are shown as the first pole panel 61 and the second pole panel 62, respectively. The first pole panel 61 includes a first circumferential end 71, which is one end in the circumferential direction, and the second pole panel 62 includes a second circumferential end 72, which is the other end in the circumferential direction. As an example, the first circumferential end 71 is composed of one non-magnetic material 53 and a pair of end plates 59, and the second circumferential end 72 is composed of one non-magnetic material 53 and a pair of end plates 59.

[0029] In this embodiment, one of the multiple non-magnetic materials 53 is composed of a first non-magnetic material 53A and a second non-magnetic material 53B, and the first non-magnetic material 53A and the second non-magnetic material 53B are incorporated into the first circumferential end 71 and the second circumferential end 72, respectively. In other words, a specific non-magnetic material 53 is composed of a first non-magnetic material 53A and a second non-magnetic material 53B, the first non-magnetic material 53A constitutes at least a part of the first circumferential end 71, and the second non-magnetic material 53B constitutes at least a part of the second circumferential end 72. Furthermore, in this embodiment, the first circumferential end 71 and the second circumferential end 72 also incorporate the circumferential ends of the end plate 59.

[0030] <3. Overview of the joining structure of the first pole piece panel 61 and the second pole piece panel 62> Figure 4 is a schematic diagram showing a cross-section of a pole piece panel unit 50 according to one embodiment of the present disclosure. The first circumferential end portion 71 of the first pole piece panel 61 has a first main body portion 81 that extends in the axial direction and a first projection portion 91 that protrudes from the first main body portion 81 to one side in the axial direction. The first projection portion 91 protrudes from a first end face 85, which is the end face of the first main body portion 81 on one side in the circumferential direction. In the radial direction, the first main body portion 81 is shorter than the first projection portion 91. The first projection portion 91 has a tip face 96, which is the end face on one side in the circumferential direction.

[0031] The second circumferential end portion 72 of the second pole piece panel 62 has a second main body portion 82 that extends in the axial direction and a second projection portion 92 that protrudes to the other side in the circumferential direction from the second main body portion 82. The second projection portion 92 protrudes from the second end face 84, which is the end face of the second main body portion 82 on the other side in the circumferential direction. The second projection portion 92 has a tip face 94, which is the end face on the other side in the circumferential direction. The second end face 84 of the second main body portion 82 overlaps radially with the tip face 96 of the first projection portion 91, and the tip face 94 of the second projection portion 92 overlaps radially with the first end face 85 of the first main body portion 81.

[0032] The second projection 92 is aligned radially with the first projection 91. In other words, the first projection 91 and the second projection 92 overlap each other in the circumferential direction. A first through hole 101 is formed in the first projection 91, and a second through hole 102 is formed in the second projection 92. The first through hole 101 is a through hole that penetrates the first projection 91 radially. The second through hole 102 may be a through hole that penetrates the second projection 92, or it may be a hole with one side closed in the radial direction (in the example in Figure 4, the second through hole 102 is a through hole). The first through hole 101 and the second through hole 102 are arranged to overlap in the circumferential direction. The number of first through holes 101 and the number of second through holes 102 are the same.

[0033] In the example shown in Figure 3, the first through-hole 101 is formed only in the non-magnetic material 53 (first non-magnetic material 53A), but it may be formed in both the first non-magnetic material 53A and the end plate 59. Similarly, the second through-hole 102 may be formed only in the non-magnetic material 53 (second non-magnetic material 53B), or it may be formed in both the second non-magnetic material 53B and the end plate 59. Also, in the example shown in Figure 3, the multiple first through-holes 101 are arranged in a straight line, but they may be arranged in a zigzag pattern along the axial direction (the arrangement of the second through-holes 102 is similar).

[0034] Returning to Figure 4, the pole piece panel unit 50 further comprises a fixing member 120 that fixes the first projection 91 to the second projection 92. The fixing member 120 includes a shaft portion 125 that extends in the axial direction, and this shaft portion 125 is inserted through the first insertion hole 101 and the second insertion hole 102. The fixing member 120 may be a fastening member (see Figures 6A and 6B), a dashpot (see Figure 7), or a crimping pin. The specific structure of the fixing member 120 will be described later.

[0035] The radially oriented electromagnetic force generated in the pole piece 55 becomes a radially oriented excitation force in the pole piece panel unit 50. Furthermore, the centrifugal force generated as the pole piece rotor 30 rotates also contributes to this excitation force. In this respect, according to the above configuration, the fixing member 120, including the shaft portion 125 inserted through the first insertion hole 101 and the second insertion hole 102, is fixed to the first protrusion 91 and the second protrusion 92. This suppresses the deflection of the pole piece panel unit 50 even when an excitation force acts upon it. Thus, a pole piece panel unit 50, a pole piece rotor 30, and a magnetic gear electromachine 1 with improved vibration damping capabilities are realized. Additionally, the frequency components of the excitation force caused by the electromagnetic force can be made different from the natural frequency of the pole piece panel unit 50, allowing the magnetic gear electromachine 1 to avoid resonance in the pole piece panel unit 50.

[0036] This disclosure is not limited to the embodiment shown in Figure 4. In Figure 4, the first projection 91 is positioned radially outward relative to the second projection 92, but instead, the first projection 91 may be positioned radially inward relative to the second projection 92. Also, instead of the non-magnetic material 53, the magnetic pole pieces 55 may constitute the first circumferential end 71 and the second circumferential end 72. In any embodiment, a magnetic pole piece panel unit 50, a magnetic pole piece rotor 30, and a magnetic gear electromachine 1 with improved vibration damping function are realized.

[0037] Furthermore, in embodiments where the non-magnetic material 53 is longer than each of the pole pieces 55 in the axial direction, the non-magnetic material 53 is more flexible than the pole pieces 55 in the radial direction. In this regard, according to an embodiment in which the first non-magnetic material 53A constitutes a part of the first circumferential end 71 and the second non-magnetic material 53B constitutes a part of the second circumferential end 72, the first non-magnetic material 53A is joined to the second non-magnetic material 53B by a fixing member 120, so the rigidity of the non-magnetic material 53 in the radial direction can be increased, and the vibration damping function of the pole piece panel unit 50 can be improved. The magnetic pole piece panel unit 50 does not necessarily have to include a pair of end rings 56. In this case, the first non-magnetic material 53A may constitute the entirety of the first peripheral end 71, and the second non-magnetic material 53B may constitute the entirety of the second peripheral end 72. Even in this case, the above advantages can still be obtained.

[0038] <4. Additional components of the pole piece panel unit 50> Figure 5 is a schematic diagram of a pole piece panel unit 150(50) according to several embodiments. The pole piece panel unit 150(50) further comprises at least an elastic sheet material 170. In this example, the sheet material 170 is a viscoelastic rubber sheet having viscosity in addition to elasticity.

[0039] The sheet material 170 is sandwiched between a first circumferential end 71 and a second circumferential end 72. In a specific example, the sheet material 170 includes a radially extending portion 172 that extends radially and a circumferentially extending portion 175 that extends circumferentially. In this embodiment, the radially extending portion 172 and the circumferentially extending portion 175 are integrally formed.

[0040] The radially extending portion 172 has a first radially extending portion 172A positioned between the first projection 91 and the second main body portion 82, and a second radially extending portion 172B positioned between the second projection 92 and the first main body portion 81. The first radially extending portion 172A is sandwiched between the tip surface 96 of the first projection 91 and the second end surface 84 of the second main body portion 82. The second radially extending portion 172B is sandwiched between the tip surface 94 of the second projection 92 and the first end surface 85 of the first main body portion 81.

[0041] The circumferentially extending portion 175 is positioned between the first projection 91 and the second projection 92. More specifically, the circumferentially extending portion 175 is sandwiched between the inner end face 99 of the first projection 91 and the outer end face 98 of the second projection 92. In the example shown in the figure, the circumferentially extending portion 175 has a hole 179 through which the shaft portion 125 of the fixing member 120 is inserted. The hole 179 is positioned radially aligned with the first insertion hole 101 and the second insertion hole 102. In other words, the hole 179, the first insertion hole 101, and the second insertion hole 102 are positioned so as to overlap each other in the circumferential direction.

[0042] In an embodiment in which the magnetic pole piece panel unit 150 (50) includes a sheet material 170, when a radially directed force is generated as an excitation force at at least one of the first circumferential end portion 71 or the second circumferential end portion 72, the elastic sheet material 170 deforms. More specifically, the first radially extending portion 172A and the second radially extending portion 172B, where the excitation force acts as a shear force, deform in the radial direction. In addition, the circumferentially extending portion 175, where the excitation force acts as a compressive force, is compressed in the radial direction. The excitation force is then reduced (canceled) by the restoring force generated in the deformed sheet material 170, thereby further improving the vibration isolation function of the magnetic pole piece panel unit 50.

[0043] In other embodiments, the sheet material 170 may include a radially extending portion 172 but not a circumferentially extending portion 175. In this case, the first radially extending portion 172A and the second radially extending portion 172B may be configured separately. Furthermore, the radially extending portion 172 may have only one of either the first radially extending portion 172A or the second radially extending portion 172B. Alternatively, the sheet material 170 may not include the radially extending portion 172 and may only include the circumferentially extending portion 175. In any embodiment, the restoring force generated in the deforming sheet material 170 reduces the aforementioned radially oriented force, thus providing the advantage of improving the vibration damping function of the magnetic pole piece panel unit 50.

[0044] Furthermore, in the embodiment in which the sheet material 170 is a viscoelastic rubber sheet, even if a radial force is suddenly generated as an excitation force at at least one of the first peripheral end 71 or the second peripheral end 72, the radial force can be instantly reduced by the deformation of the viscoelastic rubber sheet material 170.

[0045] The sheet material 170 may include a radially extending portion 172 but may not include a circumferentially extending portion 175. In this case, the first radially extending portion 172A and the second radially extending portion 172B may be configured as separate parts. Furthermore, the radially extending portion 172 may have only one of either the first radially extending portion 172A or the second radially extending portion 172B. In any embodiment, the excitation force that occurs suddenly can be reduced instantaneously.

[0046] Furthermore, in an embodiment in which the sheet material 170 includes a radially extending portion 172, even if a radially oriented force is generated as an excitation force between the first protrusion 91 and the second main body portion 82, or between the second protrusion 92 and the first main body portion 81, the first radially extending portion 172A and the second radially extending portion 172B can deform and absorb the force. Note that the above advantages can be obtained even if the radially extending portion 172 has only one of the first radially extending portion 172A or the second radially extending portion 172B.

[0047] Furthermore, in an embodiment in which the sheet material 170 includes a circumferentially extending portion 175, even if an excitation force is generated between the first protrusion 91 and the second protrusion 92, the circumferentially extending portion 175 can absorb the force by deforming radially.

[0048] Furthermore, in an embodiment in which a hole 179 is formed in the circumferentially extending portion 175 through which the shaft portion 125 of the fixing member 120 is inserted, it becomes possible to arrange the circumferentially extending portion 175 around the shaft portion 125 as well, thereby expanding the area in which the circumferentially extending portion 175 is arranged. Therefore, the vibration isolation function of the magnetic pole piece panel unit 150 (50) can be improved.

[0049] <5. Fixing member 120 according to the first embodiment> Figures 6A and 6B are schematic diagrams of the fixing members 120A and 120B (120) according to the first embodiment. Fixing member 120A is a component of the magnetic pole piece panel unit 50A (50), and fixing member 120B is a component of the magnetic pole piece panel unit 50B (50). The magnetic pole piece panel units 50A and 50B are provided with first protrusions 91A and 91B (91) and second protrusions 92A and 92B (92). First through holes 101A and 101B (101) are formed in the first protrusions 91A and 91B, and second through holes 102A and 102B (102) are formed in the second protrusions 92A and 92B. The illustrated pole piece panel units 50A and 50B include the sheet material 170 described above, but the sheet material 170 is not an essential component of the pole piece panel units 50A and 50B.

[0050] The fixing members 120A and 120B are fastening members having shaft portions 125A and 125B (125) and head portions 128A and 128B (128) connected to one end of the shaft portions 125A and 125B. The outer diameter of the head portion 128 is larger than the outer diameter of the shaft portion 125. The head portions 128A and 128B (128) press the first protrusions 91A and 91B (91) against the second protrusions 92A and 92B (92). With the above configuration, the first protrusion 91 can be firmly fixed to the second protrusion 92 by the pressing of the head portion 128. The rigidity of the magnetic pole piece panel unit 50 can be improved, and therefore the vibration damping function of the magnetic pole piece panel unit 50 is improved.

[0051] In some embodiments, at least a portion of the head portion 128A, 128B (128) is positioned in the first through-hole 101A, 101B (101). In the example shown in Figure 6A, the entire head portion 128A is positioned in the first insertion hole 101A. In other words, the head portion 128A does not protrude radially outward from the first projection 91A. On the other hand, in the example shown in Figure 6B, only a portion of the head portion 128B is positioned in the second insertion hole 102B, and the rest of the head portion 128B protrudes radially outward from the first projection 91B.

[0052] With the above configuration, it is possible to suppress the rotational resistance of the heads 128A and 128B when the magnetic pole panel units 50A and 50B rotate. Furthermore, when the magnetic gear electromachine 1 is in operation, it is possible to suppress the obstruction of the cooling airflow around the magnetic pole panel units 50A and 50B by the heads 128A and 128B, thereby suppressing the temperature rise of the magnetic pole panel units 50A and 50B. Generally, the radial length of the air gaps G1 and G2 (see Figure 1) in the magnetic gear electromachine 1 is very short, for example, a few millimeters or less, or 1 mm or less. In this regard, by positioning at least a portion of the heads 128A and 128B in the first insertion holes 101A and 101B, it is possible to suppress the heads 128A and 128B from protruding into the air gap G2. As a result, it is possible to avoid the heads 128A and 128B coming into contact with other components of the magnetic gear electromachine 1, such as the stator 20.

[0053] As shown in Figure 6A, in some embodiments, the end 126 of the shaft portion 125A opposite to the head portion 128A is located in the second through hole 102A. In other words, the shaft portion 125A does not protrude from the second protrusion 92A toward the opposite side of the first protrusion 91A. The entire portion of the end 126 is located in the second through hole 102A. Furthermore, the second protrusion 92A illustrated in Figure 6A has a closing wall portion 95 that closes the second through hole 102A from the opposite side of the first protrusion 91A. The closing wall portion 95 completely closes the second through hole 102A, which is open only toward the first protrusion 91A side. The closing wall portion 95 illustrated in the figure is located radially inward from the end 126 of the shaft portion 125A and is radially opposite to the end 126.

[0054] According to the above configuration, the rotational resistance of the shaft portion 125A when the magnetic pole piece panel unit 50A rotates can be suppressed. In addition, the presence of the closing wall portion 95 prevents air from entering the second insertion hole 102A, thereby enhancing the effect of suppressing rotational resistance. Furthermore, when the magnetic gear electromachine 1 is in operation, the shaft portion 125A can be prevented from obstructing the flow of cooling air around the magnetic pole piece panel unit 50A. And, since the presence of the closing wall portion 95 prevents cooling air from entering the second insertion hole 102A, the flow of cooling air can be made smoother. As a result, the rotational resistance of the magnetic pole piece panel unit 50A can be suppressed, and the temperature rise of the magnetic pole piece panel unit 50A can be suppressed. Note that in this paper, "air" is a concept that includes "cooling air". Furthermore, since the shaft portion 125A does not protrude into the air gap G1 (see Figure 1), it is possible to avoid the shaft portion 125A coming into contact with other components of the magnetic gear electromachine 1, such as the rotor 15.

[0055] The fixing member 120A shown in Figure 6A, which serves as a fastening member, is a screw in which the shaft portion 125A is fastened to the second through hole 102A. That is, the shaft portion 125A is fitted into the first through hole 101A in a clearance fit state, and the male thread formed on the shaft portion 125A is screwed into the female thread formed on the inner circumferential surface defining the second through hole 102A. On the other hand, the fixing member 120B shown in Figure 6B employs a bolt fastening structure having a nut 129 that is screwed onto the shaft portion 125B. That is, the fixing member 120B has a bolt consisting of a shaft portion 125B and a head 128B, and a nut 129 that is screwed onto the shaft portion 125B.

[0056] In the embodiment where the fixing member 120A is a screw, the number of parts of the fixing member 120A as a fastening member can be reduced compared to when the fastening member is a bolt and a nut, and the configuration of the magnetic pole piece panel unit 50 can be simplified.

[0057] The fastening member 120A, shown as a screw in Figure 6A, is a tapered screw. More specifically, the head 128A has a fastening tapered surface 127 whose outer diameter decreases as it approaches the second projection 92. The first projection 91A has a first opening 65 that defines the first through hole 101A, and the first opening 65 has a tapered inner surface 66 and a straight inner surface 67. The tapered inner surface 66 is configured such that its inner diameter decreases as it approaches the second projection 92A, and the straight inner surface 67 extends linearly inward in the radial direction from one end of the tapered inner surface 66. The tapered inner surface 66 of the head 128A is in contact with the fastening tapered surface 127, and a part of the shaft portion 125A is located inside the straight inner surface 67.

[0058] According to the above configuration, a portion of the force generated when the fastening tapered surface 127 of the head 128A presses against the tapered inner circumferential surface 66 functions as a force that presses the first projection 91A against the second main body 82 (see arrows T and R). As a result, the first circumferential end 71 and the second circumferential end 72 are more firmly fixed, further improving the rigidity of the magnetic pole piece panel unit 50. Furthermore, in an embodiment in which the sheet material 170 is interposed between the first protrusion 91A and the second main body 82, the first protrusion 91A is pressed against the radially extending portion 172 of the sheet material 170, allowing the radially extending portion 172 to be in close contact with the first protrusion 91A and the second main body 82, thereby enabling the vibration damping function of the sheet material 170 to be fully exhibited.

[0059] <6. Fixing member 120 according to the second embodiment> Figure 7 is a schematic diagram of a fixing member 120C(120) according to the second embodiment. The fixing member 120C is a component of the pole piece panel unit 50C(50). The pole piece panel unit 50C is provided with a first projection 91C(91) and a second projection 92C(92). A first through hole 101C(101) is formed in the first projection 91C, and a second through hole 102C(102) is formed in the second projection 92C. The illustrated pole piece panel unit 50C includes the sheet material 170 described above, but the sheet material 170 is not an essential component of the pole piece panel unit 50C.

[0060] The fixing member 120C includes a shaft portion 125C (125), and the shaft portion 125C is composed of multiple parts. More specifically, the shaft portion 125C has a cylindrical first shaft portion 251 inserted into a first through hole 101C and a second shaft portion 252 inserted into a second through hole 102C. A part of the second shaft portion 252 is housed in the first shaft portion 251, and the other part of the second shaft portion 252 protrudes radially inward from the first shaft portion 251. Furthermore, the second shaft portion 252 is supported by the first shaft portion 251 in a state that allows it to move linearly relative to the first shaft portion 251.

[0061] The fixing member 120C further includes a pair of first nuts 211 that are screwed onto the outer circumference 251A of the first shaft portion 251, and a second nut 222 that is screwed onto the outer circumference 252A of the second shaft portion 252. The pair of first nuts 211 clamp the first projection 91C in the radial direction, and the second nut 222 clamps the second projection 92C in the radial direction. As a result, the fixing member 120 is fixed to the first projection 91C and the second projection 92C. The first shaft portion 251 is displaceable in the radial direction together with the first projection 91C, and the second shaft portion 252 is displaceable in the radial direction together with the second projection 92C.

[0062] In some embodiments, the fixing member 120C is a dashpot. More specifically, the fixing member 120C further includes a spring 203 housed in a cylindrical first shaft portion 251 and brake fluid 205 filled in the first shaft portion 251.

[0063] The spring 203 biases the second shaft portion 252 in a direction that causes it to protrude from the first shaft portion 251. In the example shown in Figure 7, the second shaft portion 252 is biased radially inward by the spring 203. The braking fluid 205 is configured to apply a braking force to the linear movement of the second shaft portion 252. That is, when the second shaft portion 252 moves linearly, the braking fluid 205 applies a braking force to the second shaft portion 252 that is opposite to the direction of movement of the second shaft portion 252.

[0064] When a radially oriented force is generated as an excitation force, causing the first circumferential end portion 71 and the second circumferential end portion 72 to move relative to each other in the radial direction, the second shaft portion 252 moves linearly relative to the first shaft portion 251. As a result, the fixing member 120C can absorb the excitation force at at least one of the first circumferential end portion 71 or the second circumferential end portion 72.

[0065] According to the above configuration, even when an excitation force acts on at least one of the first peripheral end 71 or the second peripheral end 72, the force is absorbed by the fixing member 120C as the second shaft portion 252 moves linearly relative to the first shaft portion 251. This further improves the vibration isolation function of the magnetic pole piece panel unit 50. Furthermore, the fixing member 120C is not limited to being a dashpot. The fixing member 120C does not necessarily have to contain the spring 203 and the braking fluid 205; instead, a gas such as air may be sealed inside the first shaft portion 251. Even in this case, when the first protrusion 91C and the second protrusion 92C are displaced in a direction that brings them closer together, the second shaft portion 252 moves linearly in a direction that enters the first shaft portion 251, and the fixing member 120C suppresses the linear movement of the second shaft portion 252. Therefore, the excitation force generated in at least one of the first protrusion 91C or the second protrusion 92C can be absorbed.

[0066] Furthermore, in an embodiment in which the spring 203 and braking oil 205 are housed in the first shaft portion 251, when the second shaft portion 252 moves linearly relative to the first shaft portion 251, the spring 203 undergoes elastic deformation and the braking oil 205 applies a braking force to the second shaft portion 252. This suppresses the linear movement of the second shaft portion 252 and improves the vibration damping function of the magnetic pole piece panel unit 50.

[0067] The first projection 91C has an outer end face 911 and an inner end face 912, which are the radial end faces. Recesses 915 are formed in the outer end face 911 and the inner end face 912, respectively. A pair of first nuts 211 are arranged in each of the pair of recesses 915. The space formed inside each recess 915 constitutes a part of the first through hole 101C. In the illustrated embodiment, the first nut 211 on the radially outer side is arranged in the recess 915 formed in the outer end face 911. That is, at least a part of the first nut 211 is arranged in the first through hole 101C. It is preferable that the entire portion of the first nut 211 is arranged in the first through hole 101C.

[0068] According to the above configuration, the first nut 211, which is located radially outward, can be prevented from becoming a rotational resistance when the magnetic pole panel unit 50C rotates. Furthermore, when the magnetic gear electromachine 1 is in operation, the first nut 211 can be prevented from obstructing the flow of cooling air around the magnetic pole panel unit 50C, thereby suppressing the temperature rise of the magnetic pole panel unit 50C. In addition, since the first nut 211 can be prevented from protruding radially outward from the magnetic pole panel 60, contact between the first nut 211 and other components of the magnetic gear electromachine 1, such as the stator 20, can be avoided.

[0069] Recesses 925 are formed on the outer end face 921 and the inner end face 922, which are the radial end faces of the second projection 92C. A pair of second nuts 222 are arranged in each of the pair of recesses 925. The space formed inside each recess 925 constitutes a part of the second through hole 102C. In the illustrated embodiment, the radially inner second nut 222 of the pair of second nuts 222 is arranged in the recess 925 formed on the inner end face 922. In other words, at least a part of the second nut 222 is arranged in the second through hole 102C. It is preferable that the entire portion of the second nut 222 is arranged in the second through hole 102C.

[0070] With the above configuration, the second nut 222, which is separated from the first protrusion 91C, can be prevented from becoming a rotational resistance when the magnetic pole panel unit 50C rotates. Furthermore, when the magnetic gear electromachine 1 is in operation, the second nut 222 can be prevented from obstructing the flow of cooling air around the magnetic pole panel unit 50C, thereby suppressing the temperature rise of the magnetic pole panel unit 50C. In addition, since the second nut 222 can be prevented from protruding radially inward from the magnetic pole panel 60, contact between the second nut 222 and other components of the magnetic gear electromachine 1, such as the rotor 15, can be avoided.

[0071] The inner end face 912 of the first projection 91C and the outer end face 921 of the second projection 92C may sandwich the sheet material 170. In this case, at least a portion of the first nut 211 is placed in the recess 915 formed in the inner end face 912, and at least a portion of the second nut 222 is placed in the recess 925 formed in the outer end face 921, thereby preventing the first nut 211 and the second nut 222 from hindering the placement of the sheet material 170. Furthermore, if the entire portion of the first nut 211 is placed in the recess 915 of the inner end face 912, and the entire portion of the second nut 222 is placed in the recess 925 of the outer end face 921, the sheet material 170 can be placed even more easily.

[0072] <7. Example of assembly of the magnetic pole piece panel unit 50> Figure 8 is a schematic diagram showing an assembly method for a pole piece panel unit 50 according to one embodiment of the present disclosure. In the example of Figure 8, the pole piece panel unit 50 is formed by four pole piece panels 60 arranged in the circumferential direction. More specifically, the pole piece panels 60 include a first pole piece panel 61, two second pole piece panels 62, and a third pole piece panel 63. The first pole piece panel 61 is adjacent to the second pole piece panels 62 and the third pole piece panels 63 in the circumferential direction. In other words, the third pole piece panel 63 is positioned on the opposite side of the first pole piece panel 61 from the second pole piece panels 62.

[0073] In addition to the components described above, the first pole piece panel 61 further includes a first defined circumferential end portion 77, which is the end opposite to the first circumferential end portion 71. The first defined circumferential end portion 77 has a first defined main body portion 87 that extends in the axial direction and a first defined projection portion 97 that protrudes to the other side in the circumferential direction from the first defined main body portion 87. The configuration of the second pole piece panel 62 is as described above, so a detailed explanation is omitted.

[0074] The third pole piece panel 63 includes a third circumferential end portion 73, which is one end portion in the circumferential direction. The third circumferential end portion 73 has a third main body portion 83 that extends in the axial direction and a third projection portion 93 that protrudes from the third main body portion 83 to one side in the circumferential direction. The third projection portion 93 is radially aligned with the first defined projection portion 97. In other words, the third projection portion 93 and the first defined projection portion 97 overlap each other in the circumferential direction.

[0075] In the illustrated embodiment, the first projection 91 of the first pole piece panel 61 is located radially outward from the second projection 92 of the second pole piece panel 62, and the first defined projection 97 of the first pole piece panel 61 is located radially outward from the third projection 93 of the third pole piece panel 63. With this configuration, in the assembly process of the pole piece panel unit 50, the first pole piece panel 61 can be brought closer to the second pole piece panel 62 and the third pole piece panel 63 from the radially outward side, thereby improving the assembly process of the pole piece panel unit 50.

[0076] <8. Summary> The various embodiments described above can be understood, for example, as follows:

[0077] 1) A pole piece panel unit (50) according to at least one embodiment of the present disclosure is A pole piece panel unit comprising a plurality of pole piece panels (60) including a plurality of pole pieces (55) and a plurality of non-magnetic materials (53) arranged alternately along the circumferential direction with respect to an axis (S), A first pole piece panel (61) including a first circumferential end (71) which is one end in the circumferential direction, A second pole panel (62) adjacent to the first pole panel in the circumferential direction, the second pole panel (62) including a second circumferential end (72) which is the other end in the circumferential direction, Equipped with, The first peripheral end is, A first main body portion (81) extending in the axial direction, It has a first projection (91) that protrudes from the first main body portion to one side in the circumferential direction, The second peripheral end is, The second main body portion (82) extending in the axial direction, It has a second projection (92) that protrudes from the second main body portion on the other side in the circumferential direction and is aligned radially with the first projection, The device further includes a fixing member (120) that is fixed to the first and second protrusions, and a shaft portion (125) that is inserted through a first insertion hole (101) formed in the first protrusion and a second insertion hole (102) formed in the second protrusion.

[0078] According to the configuration described in 1) above, the rigidity of the pole piece panel unit is improved because the fixing member, which includes the shaft portion inserted through the first and second insertion holes, is fixed to the first and second protrusions. As a result, even when an excitation force acts on the pole piece panel unit, deflection of the pole piece panel unit can be suppressed. Thus, a pole piece panel unit with improved vibration isolation is realized.

[0079] 2) In some embodiments, the pole piece panel unit described in 1) above, The fixing member is a fastening member that has a head having a larger outer diameter than the shaft portion and further includes a head (128) that presses the first projection against the second projection.

[0080] According to the configuration described in 2) above, the head presses the first protrusion against the second protrusion, thereby firmly fixing the first protrusion to the second protrusion. As a result, the rigidity of the magnetic pole piece panel unit can be improved, and the vibration damping function of the magnetic pole piece panel unit is enhanced.

[0081] 3) In some embodiments, the pole piece panel unit described in 2) above, At least a portion of the head is positioned in the first insertion hole.

[0082] According to the configuration described in 3) above, the head portion can suppress rotational resistance when the magnetic pole piece panel unit rotates. In addition, when the magnetic gear electromachine is in operation, the head portion can suppress obstruction of the cooling airflow around the magnetic pole piece panel unit, thereby suppressing the temperature rise of the magnetic pole piece panel unit.

[0083] 4) In some embodiments, the pole piece panel unit described in 2) or 3) above, The end portion (126) of the shaft opposite to the head portion is positioned in the second insertion hole.

[0084] According to the configuration described in 4) above, the shaft portion can suppress rotational resistance when the magnetic pole panel unit rotates. In addition, when the magnetic gear electromachine is in operation, the shaft portion can suppress obstruction of the cooling airflow around the magnetic pole panel unit, thereby suppressing the temperature rise of the magnetic pole panel unit.

[0085] 5) In some embodiments, a magnetic pole piece panel unit according to any of 2) to 4) above, The fastening member is a screw whose shaft portion is fastened in the second insertion hole.

[0086] According to the configuration described in 5) above, the number of fastening members can be reduced compared to when the fastening members are bolts and nuts, and the configuration of the magnetic pole piece panel unit can be simplified.

[0087] 6) In some embodiments, the pole piece panel unit described in 5) above, The screw is a tapered screw in which the outer diameter of the head decreases as it approaches the second projection. The first projection has a first opening (65) that defines the first insertion hole, The first opening has a tapered inner circumferential surface that decreases in diameter as it approaches the second protrusion, and has a tapered inner circumferential surface (66) against which the head presses.

[0088] According to the configuration described in 6) above, a portion of the force generated by the tapered screw head pressing against the inner circumferential surface of the tapered screw functions as a force that presses the first projection toward the second main body. As a result, the first and second circumferential ends are more firmly fixed, further improving the rigidity of the magnetic pole piece panel unit.

[0089] 7) In some embodiments, the pole piece panel unit described in 5) or 6) above, The second projection has a closing wall portion (95) that closes the second insertion hole from the opposite side of the first projection.

[0090] According to the configuration described in 7) above, the entry of air into the second insertion hole is suppressed by the closing wall, thereby suppressing the rotational resistance of the magnetic pole piece panel unit and suppressing the temperature rise of the magnetic pole piece panel unit.

[0091] 8) In some embodiments, a magnetic pole piece panel unit according to any one of 1) to 7) above, In the axial direction, each of the nonmagnetic materials is longer than each of the magnetic pole pieces. The first pole piece panel includes a first non-magnetic material that constitutes at least a portion of the first peripheral end, and a first non-magnetic material (53A) that constitutes a specific portion of the non-magnetic material. The second pole piece panel includes a second nonmagnetic material that constitutes at least a portion of the second peripheral end and the other portion of the specific nonmagnetic material (53B).

[0092] Non-magnetic materials that are longer than the magnetic pole pieces in the axial direction tend to bend in the radial direction. In this respect, according to the configuration of 8) above, the first non-magnetic material is joined to the second non-magnetic material by a fixing member, so the rigidity of the non-magnetic material in the radial direction can be increased, and the vibration damping function of the magnetic pole piece panel unit can be improved.

[0093] 9) In some embodiments, a pole piece panel unit according to any one of 1) to 4) above, The aforementioned shaft portion is A cylindrical first shaft portion (251) inserted into the first insertion hole, A second shaft portion (252) is provided so as to penetrate the second insertion hole, and a portion of the first shaft portion is housed within the first shaft portion. It has, The aforementioned fixing member is A pair of first nuts that are screwed onto the outer circumference (251A) of the first shaft portion, the pair of first nuts (211) that sandwich the first projection in the radial direction, A pair of second nuts that are screwed onto the outer circumference (252A) of the second shaft portion, comprising a pair of second nuts (222) that sandwich the second projection in the radial direction, And, furthermore, it includes.

[0094] According to the configuration described in 9) above, even if a radial force acts on at least one of the first or second peripheral ends, this force is absorbed by the fixing member as the second shaft moves linearly relative to the first shaft. This further improves the vibration isolation function of the magnetic pole piece panel unit.

[0095] 10) In some embodiments, the pole piece panel unit described in 9) above, The aforementioned fixing member is A spring housed in the first shaft portion, the spring (203) biases the first shaft portion in a direction that causes the first shaft portion to protrude from the second shaft portion, The invention further includes a braking fluid (205) which is filled into the first shaft and provides braking force to the linear movement of the second shaft.

[0096] According to the configuration described in 10) above, the linear movement of the second shaft can be suppressed by the elastic deformation of the spring and the application of braking force by the braking oil, thereby improving the vibration damping function of the magnetic pole piece panel unit.

[0097] 11) In some embodiments, the pole piece panel unit described in 9) or 10) above, Of the pair of first nuts, at least a portion of the first nut that is away from the second projection is positioned in the first through hole.

[0098] According to the configuration described in 11) above, the first nut, which is separated from the second protrusion, can be prevented from becoming a rotational resistance when the magnetic pole piece panel unit rotates. Furthermore, when the magnetic gear electromachine is in operation, the first nut can be prevented from obstructing the flow of cooling air around the magnetic pole piece panel unit, thereby suppressing the temperature rise of the magnetic pole piece panel unit.

[0099] 12) In some embodiments, a pole piece panel unit according to any one of 1) to 11) above, The assembly further comprises a sheet material (170) which is sandwiched between the first and second peripheral ends and is at least elastic.

[0100] According to the configuration described in 12) above, even if a radially directed force is generated as an excitation force at at least one of the first or second peripheral ends, this force is reduced by the restoring force generated in the deforming sheet material. Therefore, the vibration isolation function of the magnetic pole piece panel unit can be further improved.

[0101] 13) In some embodiments, the pole piece panel unit described in 12) above, The sheet material is a viscoelastic rubber sheet having the aforementioned elasticity and viscosity.

[0102] According to the configuration described in 13) above, even if a radial force is suddenly generated at at least one of the first or second peripheral ends, the force can be instantly reduced by the deformation of the sheet material, which is a viscoelastic rubber sheet.

[0103] 14) In some embodiments, the pole piece panel unit described in 12) or 13) above, The sheet material includes a radially extending portion (172) which is located between the first protrusion and the second main body, or between the second protrusion and the first main body, and extends in the radial direction.

[0104] According to the configuration described in 14) above, even if a radial force is generated between the first protrusion and the second main body, or between the second protrusion and the first main body, the radially extending portion can absorb the force by deforming radially.

[0105] 15) In some embodiments, a pole piece panel unit according to any one of 12) to 14) above, The sheet material includes a circumferentially extending portion (175) that is positioned between the first and second protrusions and extends in the circumferential direction.

[0106] According to the configuration described in 15) above, even if a radially directed force is generated as an excitation force between the first and second protrusions, the circumferentially extending portion can absorb this force by deforming radially.

[0107] 16) In some embodiments, the pole piece panel unit described in 15) above, A hole (179) is formed in the circumferentially extending portion through which the shaft portion of the fixing member is inserted.

[0108] According to the configuration described in 16) above, it becomes possible to arrange the circumferentially extending portion around the shaft portion as well, thereby expanding the area in which the circumferentially extending portion is arranged. Therefore, the vibration isolation function of the magnetic pole piece panel unit can be improved.

[0109] 17) In some embodiments, a pole piece panel unit according to any one of 1) to 16) above, A third pole piece panel is positioned on the opposite side of the second pole piece panel, with the first pole piece panel in between, and further comprises a third pole piece panel (63) including a third circumferential end (73) which is one end in the circumferential direction. The third peripheral end is, The third main body portion (83) extending in the axial direction, It has a third projection (93) that protrudes from the third main body portion to one side in the circumferential direction, The first pole piece panel further includes a first defined circumferential end (97) opposite to the first circumferential end, The first specified peripheral end is, The first defined main body portion (87) extending in the axial direction, The first defined main body portion protrudes from the other side in the circumferential direction and has a third protrusion and a first defined protrusion (97) aligned in the radial direction, The first projection is located radially outward from the second projection, The first defined projection is located radially outward from the third projection.

[0110] According to the configuration described in 17) above, in the assembly process of the pole piece panel unit, the first pole piece panel can be brought closer to the second and third pole piece panels from the radially outer side, thereby improving the ease of assembly of the pole piece panel unit.

[0111] 18) A pole rotor (30) according to at least one embodiment of the present disclosure is A magnetic pole piece panel unit (50) as described in any of items 1) to 17) above, The first connecting portion (31) is connected to one end (51) of the magnetic pole piece panel unit in the axial direction and to the rotating shaft (5) of the magnetic gear electromachine (1), The other end (52) of the magnetic pole piece panel unit in the axial direction and the second connecting portion (32) connected to the rotation shaft, It is equipped with.

[0112] According to the configuration described in 18) above, the rigidity of the pole piece panel unit is improved for the same reasons as described in 1). As a result, even when excitation forces such as centrifugal force act on the pole piece panel unit, deflection of the pole piece panel unit can be suppressed. Thus, a pole piece rotor with improved vibration damping function is realized.

[0113] 19) A magnetic gear electromachine (1) according to at least one embodiment of the present disclosure is The pole rotor (30) described in 18) above, A rotor (15) comprising a plurality of rotor magnets (19) arranged in the circumferential direction on the radially inner or outer side of the magnetic pole piece panel unit, A stator (20) including a plurality of stator magnets (29) arranged in the circumferential direction on the opposite side of the plurality of rotor magnets, with the aforementioned pole piece panel unit in between, It is equipped with.

[0114] According to the configuration described in 19) above, the rigidity of the pole piece panel unit is improved for the same reasons as described in 1). This makes it possible to suppress the deflection of the pole piece panel unit even when an excitation force such as centrifugal force or electromagnetic force acts on it. In addition, it is possible to make the natural frequency of the pole piece panel unit different from the frequency components of the excitation force caused by electromagnetic force, thereby avoiding resonance of the pole piece panel unit. [Explanation of Symbols]

[0115] 1: Magnetic gear electrical machinery 5: Rotation axis 15: Rotor 19: Rotor Magnet 20: Stator 25: Stator Core 27: Stator coil 29: Stator Magnet 30: Magnetic pole rotor 31: 1st connection part 32:Second connection part 37: Ring section 38: Shaft connection part 39: Extension part 50: Magnetic pole panel unit 51:One end 52:Other end 53: Non-magnetic material 53A: 1st non-magnetic material 53B: Second non-magnetic material 55 :Magnetic pole piece 56: End ring 59: End plate 60: Magnetic pole panel 61: First magnetic pole panel 62: Second pole panel 63: Third magnetic pole panel 65: First opening 66: Tapered inner surface 67: Straight inner circumference 71: First peripheral end 72: Second peripheral end 73: Third peripheral end 77: First specified peripheral edge 81: First main body 82: Second main body 83: Third main body 84: 2nd end face 85: 1st end surface 87: Main body of the first provision 91: 1st protrusion 92:Second protrusion 93:Third protrusion 94:Tip surface 95:Occluded wall part 96:Tip surface 97: 1st prescribed protrusion 98: Outer end face 99: Inner end surface 101: First insertion hole 102: Second insertion hole 120: Fixing member 125: Shaft 126: End 127: Fastening tapered surface 128:Head 129: Nut 150: Magnetic pole panel unit 170: Sheet material 172: Radial extension part 172A: First radial extension part 172B: Second radial extension part 175: Circumferential extension part 179: Hole 203: Spring 205: Braking oil 211: First nut 222: Second nut 251: First shaft section 251A, 252A: Peripheral part 252: Second shaft section 911, 921: Outer end face 912, 922: Inner end face 915,925 :Kubo

Claims

1. A pole piece panel unit comprising multiple pole piece panels, each containing multiple pole pieces and multiple non-magnetic materials arranged alternately along the circumferential direction with respect to an axis, A first pole piece panel including a first circumferential end which is one end in the circumferential direction, A second pole panel adjacent to the first pole panel in the circumferential direction, the second pole panel including a second circumferential end which is the other end in the circumferential direction, Equipped with, The first peripheral end is, A first main body extending in the axial direction, It has a first projection that protrudes from the first main body portion to one side in the circumferential direction, The second peripheral end is, The second main body portion extending in the axial direction, It has a second projection that protrudes from the second main body portion on the other side in the circumferential direction and is aligned radially with the first projection, The device further includes a fixing member that is fixed to the first and second protrusions, and includes a shaft portion that is inserted through a first insertion hole formed in the first protrusion and a second insertion hole formed in the second protrusion. Magnetic pole panel unit.

2. The fastening member is a fastening member that has a head having a larger outer diameter than the shaft portion, and further includes a head that presses the first projection against the second projection. The magnetic pole piece panel unit according to claim 1.

3. At least a portion of the head is positioned in the first insertion hole. The magnetic pole piece panel unit according to claim 2.

4. The end of the shaft portion opposite to the head portion is positioned in the second insertion hole. The magnetic pole piece panel unit according to claim 2 or 3.

5. The fastening member is a screw whose shaft portion is fastened in the second insertion hole. The magnetic pole piece panel unit according to claim 2 or 3.

6. The screw is a tapered screw in which the outer diameter of the head decreases as it approaches the second projection. The first projection has a first opening that defines the first insertion hole, The first opening has a tapered inner circumferential surface in which the inner diameter decreases as it approaches the second protrusion, and has a tapered inner circumferential surface against which the head presses. The magnetic pole piece panel unit according to claim 5.

7. The second projection has a closing wall portion that closes the second insertion hole from the opposite side of the first projection. The magnetic pole piece panel unit according to claim 5.

8. In the axial direction, each of the nonmagnetic materials is longer than each of the magnetic pole pieces. The first pole piece panel includes a first non-magnetic material that constitutes at least a portion of the first peripheral end, and includes a first non-magnetic material that constitutes a specific portion of the non-magnetic material. The second pole piece panel includes a second non-magnetic material that constitutes at least a portion of the second peripheral end, and includes a second non-magnetic material that constitutes the other portion of the specific non-magnetic material. A magnetic pole piece panel unit according to any one of claims 1 to 3.

9. The aforementioned shaft portion is A cylindrical first shaft portion inserted into the first insertion hole, A second shaft portion is provided so as to penetrate the second insertion hole, and a portion of the first shaft portion is housed within the first shaft portion. It has, The aforementioned fixing member is A pair of first nuts that are screwed onto the outer circumference of the first shaft portion, the pair of first nuts that sandwich the first projection portion in the radial direction, A pair of second nuts that are screwed onto the outer circumference of the second shaft portion, the pair of second nuts that sandwich the second projection portion in the radial direction, And, further including A magnetic pole piece panel unit according to any one of claims 1 to 3.

10. The aforementioned fixing member is A spring housed in the first shaft portion, the spring biases the first shaft portion in a direction that causes the first shaft portion to protrude from the second shaft portion, The first shaft portion is filled with a braking fluid for providing braking force to the linear movement of the second shaft portion, and further comprises The magnetic pole piece panel unit according to claim 9.

11. Of the pair of first nuts, at least a portion of the first nut that is away from the second protrusion is positioned in the first through hole. The magnetic pole piece panel unit according to claim 9.

12. The present invention further comprises a sheet material sandwiched between the first and second peripheral ends, which is at least elastic. A magnetic pole piece panel unit according to any one of claims 1 to 3.

13. The sheet material is a viscoelastic rubber sheet having the aforementioned elasticity and viscosity. The magnetic pole piece panel unit according to claim 12.

14. The sheet material includes a radially extending portion that is positioned between the first protrusion and the second main body, or between the second protrusion and the first main body, and extends in the radial direction. The magnetic pole piece panel unit according to claim 12.

15. The sheet material includes a circumferentially extending portion that is positioned between the first and second protrusions and extends in the circumferential direction. The magnetic pole piece panel unit according to claim 12.

16. A hole is formed in the circumferentially extending portion through which the shaft portion of the fixing member is inserted. The magnetic pole piece panel unit according to claim 15.

17. A third pole piece panel is positioned on the opposite side of the second pole piece panel from the first pole piece panel, and further comprises a third pole piece panel including a third circumferential end which is one end in the circumferential direction, The third peripheral end is, The third main body portion extending in the axial direction, It has a third projection that protrudes from the third main body portion to one side in the circumferential direction, The first pole piece panel further includes a first defined circumferential end opposite to the first circumferential end, The first specified peripheral end is, The first defined main body portion extending in the axial direction, It has a third projection that protrudes from the first defined main body portion on the other side in the circumferential direction, and the third projection portion and the first defined projection portion are aligned in the radial direction, The first projection is located radially outward from the second projection, The first defined projection is located radially outward from the third projection. A magnetic pole piece panel unit according to any one of claims 1 to 3.

18. A magnetic pole piece panel unit according to any one of claims 1 to 3, A first connecting portion is connected to one end of the magnetic pole piece panel unit in the axial direction and to the rotating shaft of the magnetic gear electromachine, The other end of the magnetic pole piece panel unit in the axial direction and the second connecting portion connected to the rotation axis, A magnetic pole rotor equipped with a single-pole rotor.

19. A magnetic pole rotor according to claim 18, A rotor comprising a plurality of rotor magnets arranged in the circumferential direction on the radially inner or outer side of the magnetic pole panel unit, A stator including a plurality of stator magnets arranged in the circumferential direction on the opposite side of the plurality of rotor magnets, with the aforementioned pole piece panel unit in between, A magnetic gear electromachine equipped with [a specific feature].

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