Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K3/00—Details of windings
  • H02K3/46—Fastening of windings on the stator or rotor structure
  • H02K3/52—Fastening salient pole windings or connections thereto
  • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
  • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K1/00—Details of the magnetic circuit
  • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
  • H02K1/12—Stationary parts of the magnetic circuit
  • H02K1/14—Stator cores with salient poles
  • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
  • H02K1/148—Sectional cores
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K3/00—Details of windings
  • H02K3/46—Fastening of windings on the stator or rotor structure
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
  • H02K2203/06—Machines characterised by the wiring leads, i.e. conducting wires for connecting the winding terminations

Definitions

• This disclosure relates to a stator.
• Patent Publication No. 5502115 discloses a so-called split-core type stator.
• a split-core type stator is made up of multiple stator components. The multiple stator components are integrated by assembling an upper stator component to a lower stator component from the axial direction of the stator.
• stator with a shorter axial length even when the crossover wires cross over each other, which is known as a split-core type stator.
• This disclosure provides a stator that can shorten the axial length even when the crossover wires cross.
• One aspect of the present disclosure comprises a plurality of core components constituting an annular yoke and having yoke components divided in the circumferential direction of the yoke and teeth protruding from each of the yoke components radially inward of the yoke, a plurality of windings each having a winding portion wound around each of the teeth and a jumper wire connecting the winding portions, and a plurality of insulators provided on each of the core components and having an insulating portion that insulates the teeth portion and the winding portion and a connecting portion that connects the radially inner ends of the insulating portion, the jumper wire being led out from the winding portion in a direction in which the winding portion is tightened, and the jumper wire being connected to a terminal portion at the start of a winding of a winding portion located in the middle of the winding order among the plurality of winding portions and a terminal portion at the end of a winding of the winding portion.
• the wire is a stator in which the connecting portion between the insulating portion and the connecting portion is intersected so that the jumper wire connected to the end of the winding is located on one axial side of the connecting portion relative to the jumper wire connected to the start of the winding, the connecting portion has a hook portion that extends radially outward from a position between the adjacent insulating portions, and the jumper wire connected to the end of the winding is hooked onto the hook portion so that it passes through the other axial side of the connecting portion relative to the hook portion, so that the position of the portion of the jumper wire connected to the end of the winding that is hooked onto the hook portion is lowered to the other axial side of the connecting portion to the position of the jumper wire connected to the start of the winding.
• a stator that can shorten the axial length even when the crossover wires are crossed.
• FIG. 2 is a perspective view of a stator according to an embodiment of the present disclosure.
• FIG. 2 is a perspective view showing an assembled state of two stator components according to an embodiment of the present disclosure.
• FIG. 3 is an enlarged view of a portion of FIG. 2 .
• FIG. 2 is a perspective view of one stator component according to one embodiment of the present disclosure.
• FIG. 5 is an enlarged view of a portion of FIG. 4 .
• FIG. 2 is a plan view of one stator component according to one embodiment of the present disclosure.
• FIG. 7 is an enlarged view of a portion of FIG. 6.
• FIG. 2 is a plan view showing an example of a stator component.
• FIG. 8 is a plan view showing an example of a stator component 112.
• Each stator component 112 includes multiple core components 114, a winding 116, and an insulator 118.
• Each core component 114 includes a yoke component 122 that forms an annular yoke and is divided in the circumferential direction of the yoke, and a teeth portion 124 that protrudes from the yoke component 122 to the radially inward direction of the yoke.
• the winding 116 includes a winding portion 126 that is wound around each tooth portion 124, and a jumper wire 128 that connects the winding portions 126 to each other.
• the insulator 118 is provided on each core component 114, and includes an insulating portion 134 that insulates the teeth portion 124 from the winding portion 126, and a connecting portion 136 that connects the radially inner ends of the insulating portion 134 to each other.
• the winding 116 is wound around the multiple teeth 124 in sequence along the circumferential direction of the stator component 112. That is, the winding 116 is wound around teeth 124A, teeth 124B, teeth 124C, and teeth 124D in that order. This forms winding section 126A, winding section 126B, winding section 126C, and winding section 126D. Each jumper wire 128 is led out from winding section 126 in the direction in which winding section 126 tightens (the direction of arrow A).
• a jumper wire 128 is connected to the start and end terminals of winding section 126B, which is located in the middle (second) of winding sections 126A to 126D in the winding order.
• a jumper wire 128 is connected to the start and end terminals of winding section 126C, which is located in the middle (third) of winding sections 126A to 126D in the winding order.
• each jumper wire 128 is led out from the winding section 126 in the direction in which the winding section 126 is tightened, the jumper wire 128 connected to the terminal at the beginning of the winding of the winding section 126 located in the middle of the winding order among the multiple winding sections 126 and the jumper wire 128 connected to the terminal at the end of the winding cross at the connection part 138 between the insulating part 134 and the connecting part 136.
• jumper wires 128 cross in this way, when the upper stator component 112 is assembled to the lower stator component 112 from one axial side of the stator, there is a risk that the jumper wire 128 wired to the lower stator component 112 and connected to the terminal at the end of the winding may interfere with the connection part 138 provided on the upper stator component 112 if it is bent or loosened, for example.
• connection portion 138 In order to prevent the jumper wire 128, which is wired to the lower stator component 112 and connected to the terminal portion at the end of the winding, from interfering with the connection portion 138 provided on the upper stator component 112, it is possible to position the connection portion 138 away from the jumper wire 128 in the axial direction of the stator, but doing so would increase the axial length of the stator.
• the purpose of this embodiment is to provide a stator that can shorten the axial length even when the crossover wires are crossed.
• the first aspect of this embodiment comprises a plurality of core components constituting an annular yoke and having yoke components divided in the circumferential direction of the yoke and teeth protruding from each of the yoke components radially inward of the yoke, a plurality of windings each having a winding portion wound around each of the teeth and a jumper wire connecting the winding portions, and a plurality of insulators provided on each of the core components and having an insulating portion that insulates the teeth and the winding portion and a connecting portion connecting the radially inner ends of the insulating portion, the jumper wire being led out from the winding portion in a direction in which the winding portion is tightened, and the jumper wire being connected to a terminal portion at the start of winding of a winding portion located in the middle of the winding order among the plurality of winding portions and a terminal portion at the end of winding of the winding portion.
• the jumper wire is a stator in which the jumper wire connected to the end of the windings crosses the connection between the insulating part and the connecting part so that the jumper wire connected to the end of the windings is located on one axial side of the connecting part with respect to the jumper wire connected to the start of the windings, and the connecting part has a hook part that extends radially outward from a position between the adjacent insulating parts, and the jumper wire connected to the end of the windings is hooked onto the hook part so that it passes through the other axial side of the connecting part with respect to the hook part, so that the position of the part of the jumper wire connected to the end of the windings that is hooked onto the hook part is lowered to the other axial side of the connecting part to the position of the jumper wire connected to the start of the windings.
• the connecting portion has a hook portion that extends radially outward from a position between adjacent insulating portions.
• the jumper wire connected to the terminal portion at the end of the winding is hooked onto the hook portion so as to pass on the other axial side of the connecting portion relative to the hook portion, so that the position of the portion of the jumper wire connected to the terminal portion at the end of the winding that is hooked onto the hook portion is lowered to the other axial side of the connecting portion to the position of the jumper wire connected to the terminal portion at the start of the winding.
• the connecting portion does not need to be positioned away from the crossover wire in the axial direction of the stator, the axial length of the stator can be shortened even if the crossover wires cross.
• the second aspect of this embodiment is the first aspect of this embodiment, in which the stator is composed of a plurality of stator components, the plurality of stator components having a lower stator component and an upper stator component that is assembled to the lower stator component from one axial side of the stator, and the connection portion between the insulating portion and the connecting portion provided in the upper stator component is located on one axial side of the stator with respect to the jumper wire that is wired to the lower stator component and connected to the terminal portion of the start of the winding.
• connection portion between the insulating portion and the connecting portion provided in the upper stator component is located on one side of the axial direction of the stator with respect to the jumper wire that is wired to the lower stator component and connected to the terminal portion at the beginning of the winding. Therefore, the connection portion between the insulating portion and the connecting portion provided in the upper stator component is disposed between the jumper wire that is wired to the lower stator component and connected to the terminal portion at the beginning of the winding, and the jumper wire that is wired to the upper stator component and connected to the terminal portion at the end of the winding.
• the third aspect of this embodiment is the first or second aspect of this embodiment, in which the hook portion is a stator formed in a wall shape extending in the circumferential direction of the connecting portion.
• the hook portion is formed in a wall shape extending in the circumferential direction of the connecting portion. Therefore, the rigidity of the hook portion can be ensured compared to, for example, when the hook portion is formed in a pin shape. This makes it possible to prevent the hook portion from collapsing even when the jumper wire is hooked on the hook portion. Furthermore, by forming the hook portion in a wall shape, the hook portion acts as a rib, thereby increasing the rigidity of the connecting portion.
• FIG. 1 is a perspective view of a stator 10 according to this embodiment.
• the stator 10 is a so-called split-core type stator.
• the basic configuration of a split-core type stator is described in Japanese Patent No. 5502115.
• the stator 10 is applied to an inner rotor type brushless motor. That is, a rotor (not shown) is rotatably housed inside the stator 10, and the stator 10 and the rotor form a brushless motor.
• the stator 10 is composed of multiple stator components 12.
• the stator 10 has U-phase, V-phase, and W-phase, and the number of multiple stator components 12 corresponds to the number of U-phase, V-phase, and W-phase. That is, the stator 10 includes a U-phase stator component 12, a V-phase stator component 12, and a W-phase stator component 12.
• the multiple stator components 12 are integrated by being assembled together in the axial direction of the stator 10.
• FIG. 2 is a perspective view showing two stator components 12 according to this embodiment assembled together
• FIG. 3 is an enlarged view of a portion of FIG. 2.
• the upper stator component 12 is assembled to the lower stator component 12 from one axial side of the stator 10.
• FIG. 4 is a perspective view of one stator component 12 according to this embodiment, and FIG. 5 is an enlarged view of a portion of FIG. 4.
• FIG. 6 is a plan view of one stator component 12 according to this embodiment, and FIG. 7 is an enlarged view of a portion of FIG. 6.
• the stator component 12 includes a plurality of core components 14, windings 16, and insulators 18.
• Each core component 14 forms an annular yoke 20 (see FIG. 1) and has yoke components 22 divided in the circumferential direction of the yoke 20, and teeth 24 protruding from the yoke components 22 to the radially inward direction of the yoke 20.
• the winding 16 has windings 26 wound around each tooth 24, jumper wires 28 connecting the windings 26, a winding terminal 30 at the start of the winding, and a winding terminal 32 at the end of the winding.
• the insulators 18 are provided on each core component 14 and have insulating parts 34 that insulate the teeth 24 and winding parts 26, and connecting parts 36 that connect the radially inner ends of the insulating parts 34 to each other.
• the winding 16 is wound around the multiple teeth 24 in sequence along the circumferential direction of the stator component 112. That is, the winding 16 is wound around teeth 24A, teeth 24B, teeth 24C, and teeth 24D in that order. This forms winding section 26A, winding section 26B, winding section 26, and winding section 26D.
• Each jumper wire 28 is led out from winding section 26 in the direction in which winding section 26 tightens (the direction of arrow A).
• a jumper wire 28 is connected to the start and end terminals of winding section 26B, which is located in the middle (second) of winding sections 26A-26D in the winding order.
• the jumper wire 28 connected to the start terminal and the jumper wire 28 connected to the end terminal are led out in the tightening direction (arrow A direction), so that the jumper wire 28 connected to the end terminal is located on one axial side (upper side) of the connecting section 36 relative to the jumper wire 28 connected to the start terminal, and crosses over at the connection part 38 between the insulating part 34 corresponding to winding section 26B and the connecting section 36.
• a jumper wire 28 is connected to the start and end terminals of winding section 26C, which is located in the middle (third) of winding sections 26A to 26D in the winding order.
• the jumper wire 28 connected to the start terminal and the jumper wire 28 connected to the end terminal are led out in the tightening direction (arrow A direction), so that the jumper wire 28 connected to the end terminal is located on one axial side (upper side) of the connecting section 36 relative to the jumper wire 28 connected to the start terminal, and crosses over at the connection part 38 between the insulating section 34 corresponding to winding section 26C and the connecting section 36.
• the connecting portion 36 is formed in the shape of an annular plate with the plate thickness direction being the radial direction of the connecting portion 36.
• a plurality of hook portions 42 are formed in the connecting portion 36.
• the plurality of hook portions 42 are formed at intervals in the circumferential direction of the connecting portion 36.
• Each hook portion 42 is formed on the outer circumferential surface of the connecting portion 36.
• Each hook portion 42 extends radially outward from a position between adjacent insulating portions 34.
• Each hook portion 42 is formed at a position on one axial side of the axial center of the connecting portion 36, and extends in an arc shape along the circumferential direction of the connecting portion 36.
• Each hook portion 42 is located in the center between adjacent insulating portions 34.
• Each jumper wire 28 is hooked to the hooking portion 42 so as to pass through the other axial side (lower side) of the connecting portion 36 relative to the hooking portion 42.
• the jumper wire 28 connected to the end of the winding portion 26B is hooked to the hooking portion 42 so as to pass through the other axial side of the connecting portion 36 relative to the hooking portion 42.
• the position of the portion 28A of the jumper wire 28 connected to the end of the winding portion 26B that is hooked to the hooking portion 42 is lowered to the other axial side of the connecting portion 36 to the position of the jumper wire 28 connected to the start of the winding portion 26B.
• the portion 28A of the jumper wire 28 connected to the end of the winding portion 26B that is hooked to the hooking portion 42 and the jumper wire 28 connected to the start of the winding portion 26B are located at the same axial position (same height) of the connecting portion 36.
• the jumper wire 28 connected to the end of the winding section 26C is hooked onto the hook portion 42 so as to pass through the other axial side (lower side) of the connecting section 36 relative to the hook portion 42, so that the position of the portion 28A of the jumper wire 28 connected to the end of the winding section 26C that is hooked onto the hook portion 42 is lowered to the other axial side of the connecting section 36 to the position of the jumper wire 28 connected to the start of the winding section 26C.
• the portion 28A of the jumper wire 28 connected to the end of the winding section 26C that is hooked onto the hook portion 42 and the jumper wire 28 connected to the start of the winding section 26C are located at the same axial position (same height) of the connecting section 36.
• connection portion 38 (see FIG. 3) between the insulating portion 34 and the connecting portion 36 provided on the upper stator component 12 is located on one axial side (upper side) of the stator 10 with respect to the jumper wire 28 that is wired to the lower stator component 12 and connected to the terminal portion at the beginning of the windings of the winding portion 26B.
• the same is true for the jumper wire 28 that is wired to the lower stator component 12 and connected to the terminal portion at the beginning of the windings of the winding portion 26C.
• the connecting portion 36 has a hook portion 42 extending radially outward from a position between adjacent insulating portions 34.
• the jumper wire 28 connected to the terminal portion at the end of the winding portion 26B is hooked to the hook portion 42 so as to pass through the other axial side (lower side) of the connecting portion 36 relative to the hook portion 42, so that the position of the portion 28A of the jumper wire 28 connected to the terminal portion at the end of the winding portion 26B that is hooked to the hook portion 42 is lowered to the other axial side of the connecting portion 36 to the position of the jumper wire 28 connected to the terminal portion at the start of the winding portion 26B. Therefore, it is possible to prevent the jumper wire 28 that is wired to the lower stator component 12 and connected to the terminal portion at the end of the winding portion 26B from interfering with the connecting portion 36 provided on the upper stator component 12.
• the jumper wire 28 connected to the terminal end of the winding section 26C is hooked onto the hook portion 42 so as to pass through the other axial side (lower side) of the connecting section 36 relative to the hook portion 42, so that the position of the portion 28A of the jumper wire 28 connected to the terminal end of the winding section 26C that is hooked onto the hook portion 42 is lowered to the other axial side of the connecting section 36 to the position of the jumper wire 28 connected to the terminal end of the winding section 26C. Therefore, it is possible to prevent the jumper wire 28 that is wired to the lower stator component 12 and connected to the terminal end of the winding section 26C from interfering with the connecting section 36 provided on the upper stator component 12.
• the connecting portion 36 does not need to be positioned away from the crossover wires 28 in the axial direction of the stator 10, the axial length of the stator 10 can be shortened even if the crossover wires 28 cross each other.
• connection portion 38 (see FIG. 3) between the insulating portion 34 and the connecting portion 36 provided in the upper stator component 12 is located on one axial side (upper side) of the stator 10 with respect to the jumper wire 28 that is wired to the lower stator component 12 and connected to the terminal portion at the beginning of the winding of the winding portion 26B.
• the jumper wire 28 that is wired to the lower stator component 12 and connected to the terminal portion at the beginning of the winding of the winding portion 26C.
• connection portion 38 between the insulating portion 34 and the connecting portion 36 provided in the upper stator component 12 is located between the jumper wire 28 that is wired to the lower stator component 12 and connected to the terminal portion at the beginning of the winding and the jumper wire 28 that is wired to the upper stator component 12 and connected to the terminal portion at the end of the winding.
• This allows the jumper wires 28 that are wired to the lower stator component 12 and connected to the terminal at the beginning of the winding and the jumper wires 28 that are wired to the upper stator component 12 and connected to the terminal at the end of the winding to be separated in the axial direction of the stator 10, ensuring insulation between the jumper wires 28.
• the hook portion 42 is formed in a wall shape extending in the circumferential direction of the connecting portion 36. Therefore, the rigidity of the hook portion 42 can be ensured compared to when the hook portion 42 is formed in a pin shape, for example. This makes it possible to prevent the hook portion 42 from collapsing even when the jumper wire 28 is hooked on the hook portion 42. Furthermore, by forming the hook portion 42 in a wall shape, the hook portion 42 acts as a rib, thereby increasing the rigidity of the connecting portion 36.
• the hook portion 42 is formed in a wall shape, but may be formed in a shape other than a wall.

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Insulation, Fastening Of Motor, Generator Windings (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Related Child Applications (1)

Publications (1)

Family

ID=92590220

Family Applications (1)

Country Status (5)

Citations (4)

• 2023
  • 2023-03-02 JP JP2023032110A patent/JP2024124142A/ja active Pending
  • 2023-12-26 DE DE112023005898.9T patent/DE112023005898T5/de active Pending
  • 2023-12-26 WO PCT/JP2023/046774 patent/WO2024180891A1/ja not_active Ceased
  • 2023-12-26 CN CN202380095209.8A patent/CN120787406A/zh active Pending
• 2025
  • 2025-09-02 US US19/316,482 patent/US20250385562A1/en active Pending

Patent Citations (4)

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