JP2021136755A - Stator assembly device and assembly method of stator - Google Patents

Abstract

To provide a stator assembly device and a stator assembly method that can further prevent the shape of an insulating member from being deformed without opening the insulating member when a coil is inserted to a stator core, and further secure the insulation between the coil and the slot.SOLUTION: A stator assembly device includes a first opening jig 232 that opens a portion 40d on one side (R1 side) of an insulating member 40 in the radial direction (R direction), a second opening jig 233 that opens a portion 40e on the other side (R2 side) of the insulating member 40 in the radial direction (R direction), and a coil insertion portion 220 that inserts a slot accommodating portion 21 into a slot 13 by moving the coil 20 and the first opening jig 232 to the other side (R2 side) in the radial direction (R direction) with respect to the stator core 10, and the first opening jig 232 and the second opening jig 233 are configured to be movable independently of each other along the axial direction (Z direction).SELECTED DRAWING: Figure 9

Description

The present invention relates to a stator assembling device and a method of assembling a stator.

Conventionally, there is known an assembling device for a stator including an opening jig that opens an insulating member while being inserted into an insulating member arranged in a slot along an axial direction (see, for example, Patent Document 1).

In Patent Document 1, a stator core including a slot having an opening on one side in the radial direction, a coil including a slot accommodating portion accommodated in the slot, and one of the radial directions arranged between the coil and the slot accommodating portion. A stator assembly device comprising an insulating member having an opening on the side is disclosed. The stator assembly apparatus described in Patent Document 1 has a first guide jig that opens one side portion of the insulating member in the radial direction and a second guide jig that opens the other side portion of the insulating member in the radial direction. It includes a jig and a coil insertion portion that presses the coil toward the other side in the radial direction. In the stator assembly apparatus described in Patent Document 1, the second guide jig is fixed at the radial position on the other side of the first guide jig in the radial direction. Further, the first guide jig is configured to be movable relative to the second guide jig in the radial direction. Further, the first guide jig and the second guide jig are configured to move integrally in the axial direction.

In the stator assembly apparatus described in Patent Document 1, first, an insulating member is arranged in a slot. Then, the first guide jig and the second guide jig are integrally moved in the axial direction, so that they are inserted along the axial direction into one side portion and the other side portion in the radial direction of the insulating member. .. As a result, one side portion and the other side portion in the radial direction of the insulating member are opened. Further, the coil is arranged on one side in the radial direction of the first guide jig. Then, by pressing the coil toward the other side in the radial direction by the coil insertion portion, the first guide jig moves between the insulating member in the open state together with the coil and the first guide jig. 2 Move it to the other side in the radial direction until it comes into contact with the guide jig. Then, the first guide jig and the second guide jig are integrally moved in the axial direction, and at the same time, they are retracted from the insulating member along the axial direction. Then, the coil is further moved to the other side in the radial direction by the coil insertion portion by the space of the retracted first guide jig and the second guide jig. As a result, the coil is inserted up to the other side portion in the radial direction of the insulating member.

International Publication No. 2019/031573

However, in the conventional stator assembling device as described in Patent Document 1, although the insulating member is opened while the first guide jig and the second guide jig are inserted into the insulating member, the first guide jig and the second guide jig are opened. After the 1st guide jig and the 2nd guide jig are retracted from the insulating member, the insulating member may be closed. That is, when both the coil and the first guide jig are moved to the other side in the radial direction to the position where the first guide jig comes into contact with the second guide jig, the insulating member is maintained in an open state. can. On the other hand, by moving integrally in the axial direction, the first guide jig and the second guide jig are retracted at the same time, and then the retracted first guide jig (first opening jig) and second guide are retracted. When the coil is further moved to the other side in the radial direction by the space of the jig (second opening jig), the shape of the insulating member may be deformed such as the insulating member closing. If the shape of the insulating member is broken, it may not be possible to secure the insulation between the coil and the slot. Therefore, when the coil is inserted into the slot of the stator core, the range of the insulating member that can further prevent the shape of the insulating member from being deformed without opening the insulating member and further secure the insulation between the coil and the slot is limited. There is a desire to expand.

The present invention has been made to solve the above problems, and one object of the present invention is the shape of the insulating member without opening the insulating member when the coil is inserted into the slot of the stator core. It is an object of the present invention to provide a stator assembling device and a method for assembling the stator, which can further prevent the coil from collapsing and further secure the insulation between the coil and the slot.

In order to achieve the above object, the stator assembling device in the first aspect of the present invention includes a stator core including a slot having an opening that opens on one side in the radial direction, and a slot accommodating portion accommodated in the slot. A stator assembly device comprising a coil and an insulating member disposed between the slot and the slot accommodating portion, configured to be movable along the axial and radial directions of the stator core and arranged in the slot. A first opening jig that opens one side of the insulating member in the radial direction while being inserted into the insulating member along the axial direction, and a first opening jig that opens the other side in the radial direction of the first opening jig. A second opening jig that is configured to be movable along the axial direction and opens the other side of the insulating member in the radial direction, and a coil are arranged on one side of the first opening jig in the radial direction. In this state, by moving both the coil and the first opening jig to the other side in the radial direction with respect to the stator core, the slot accommodating portion is inserted into the slot through the opening. The first opening jig and the second opening jig are configured to be movable independently of each other along the axial direction. In the specification of the present application, "opening the insulating member" means changing the inside of the insulating member so that the gap (width) becomes large.

In the stator assembly apparatus according to the first aspect of the present invention, as described above, the first opening jig and the second opening jig are configured to be movable independently of each other along the axial direction. As a result, one of the first opening jig and the second opening jig is retracted from the insulating member along the axial direction, and the other of the first opening jig and the second opening jig is arranged on the insulating member. Can be in the state of As a result, after one of the first opening jig and the second opening jig is retracted from the insulating member along the axial direction, only the other of the first opening jig and the second opening jig is insulated. The coil can be further moved to the other side in the radial direction by the space of one of the retracted first opening jig and the second opening jig in the state of being arranged on the member. As a result, the other of the first opening jig and the second opening jig can be retracted from the insulating member along the axial direction while the coil is further moved to the other side in the radial direction. That is, as compared with the case where the first opening jig and the second opening jig are retracted from the insulating member at the same time, the coil is provided in a state where both the first opening jig and the second opening jig are not arranged on the insulating member. The moving distance can be reduced. As a result, when the coil is inserted into the slot of the stator core, the shape of the insulating member is prevented from being deformed without opening the insulating member, and the stator assembling device capable of further ensuring the insulation between the coil and the slot is provided. Can be provided.

Further, in order to achieve the above object, the method of assembling the stator in the second aspect of the present invention includes a stator core including a slot having an opening which opens on one side in the radial direction, and a slot accommodating portion accommodated in the slot. A method of assembling a stator including a coil including a coil and an insulating member arranged between a slot and the slot accommodating portion, wherein the insulating member is arranged in the slot, and after the arrangement step, the first An opening process in which the opening jig and the second opening jig are inserted into the insulating member along the axial direction of the stator core, and one side portion in the radial direction and the other side portion in the radial direction of the insulating member are opened, respectively. After the opening step, with the coil arranged on one side in the radial direction of the first opening jig, both the coil and the first opening jig are placed on the other side in the radial direction with respect to the stator core by the coil insertion portion. The slot accommodating portion is inserted into the slot through the opening, and the first opening jig and the second opening jig are independently and stepwise in the inserting step. In addition, it is retracted from the insulating member along the axial direction.

In the method of assembling the stator in the second aspect of the present invention, as described above, in the insertion step of inserting the slot accommodating portion into the slot, the first opening jig and the second opening jig are independently stepwise. In addition, it is retracted from the insulating member along the axial direction. As a result, one of the first opening jig and the second opening jig is retracted from the insulating member along the axial direction, and the other of the first opening jig and the second opening jig is arranged on the insulating member. Can be in the state of As a result, one of the first opening jig and the second opening jig is retracted from the insulating member along the axial direction, and then the other of the first opening jig and the second opening jig is retracted from the insulating member along the axial direction. The coil can be further moved to the other side in the radial direction by the space of one of the retracted first opening jig and the second opening jig. As a result, the other of the first opening jig and the second opening jig can be retracted from the insulating member along the axial direction while the coil is further moved to the other side in the radial direction. That is, as compared with the case where the first opening jig and the second opening jig are retracted from the insulating member at the same time, the coil is provided in a state where both the first opening jig and the second opening jig are not arranged on the insulating member. The moving distance can be reduced. As a result, when the coil is inserted into the slot of the stator core, it is possible to further prevent the shape of the insulating member from being deformed without opening the insulating member, and it is possible to further secure the insulation between the coil and the slot.

According to the present invention, as described above, when the coil is inserted into the slot of the stator core, the insulating member is not opened and the shape of the insulating member is further prevented from being deformed, so that the insulation between the coil and the slot is further improved. Can be secured.

It is a perspective sectional view of the stator according to 1st Embodiment. It is a partially enlarged view of the stator according to 1st Embodiment seen from the axial direction. It is a perspective view of the coil according to 1st Embodiment. It is a perspective view of the insulating member according to 1st Embodiment. It is a perspective sectional view of the stator and the assembly apparatus of the stator according to 1st Embodiment. It is a block diagram of the assembly apparatus of the stator according to 1st Embodiment. It is the figure which looked at the coil insertion part by 1st Embodiment from the circumferential direction. It is the figure which looked at the coil insertion part by 1st Embodiment from the axial direction. It is a figure for demonstrating the insulation member opening part by 1st Embodiment. It is a figure for demonstrating the assembling method of the stator according to 1st Embodiment. It is a figure for demonstrating the continuation of FIG. It is a flow chart of the method of assembling the stator according to 1st Embodiment. It is a figure for demonstrating the process of arranging the insulating member in a slot according to 1st Embodiment. It is a block diagram of the assembly apparatus of the stator according to 2nd Embodiment. It is a figure for demonstrating the assembling method of the stator according to 2nd Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
(Constituent configuration)
First, the configuration of the stator 100 according to the first embodiment will be described with reference to FIGS. 1 to 4.

In the following description, the axial direction, the radial direction, and the circumferential direction of the stator core 10 (see FIG. 1) included in the stator 100 are the Z direction, the R direction, and the C direction, respectively. Further, one side and the other side in the axial direction (Z direction) are defined as the Z1 side and the Z2 side, respectively. Further, the inside and the outside in the radial direction (R direction) are the R1 side and the R2 side, respectively. The inside and outside in the radial direction (R direction) are examples of "one side in the radial direction" and "the other side in the radial direction" in the claims, respectively.

As shown in FIG. 1, the stator 100 is formed in an annular shape. The stator 100 is a stator that constitutes a rotary electric machine together with a rotor (rotor, not shown). The stator 100 includes a stator core 10 and a coil 20.

The stator core 10 is made of, for example, a plurality of electromagnetic steel sheets laminated in the Z direction. The stator core 10 is formed in an annular shape. The stator core 10 has a space for arranging the rotor in a region including the central axis A (rotation axis of the rotor) on the R1 side of the ring.

The stator core 10 includes a back yoke 11. The back yoke 11 is a portion of the stator core 10 on the outer peripheral side (a portion on the R2 side). The back yoke 11 is formed in an annular shape.

As shown in FIG. 2, the stator core 10 includes a plurality of teeth 12. The plurality of teeth 12 are convex portions protruding from the back yoke 11 toward the R1 side. The plurality of teeth 12 are arranged at equal angular intervals along the C direction. A slot 13 is formed between two adjacent teeth 12.

The slot 13 is a recess recessed from the inner peripheral surface of the stator core 10 toward the R2 side. The slot 13 is formed in a U shape when viewed from the Z direction. The slot 13 has an opening 13a that opens on the R2 side. The slot 13 accommodates and holds the slot accommodating portion 21 (described later) of the coil 20. A plurality of slots 13 are formed. The plurality of slots 13 are arranged at equal angular intervals along the C direction. Slots 13 and teeth 12 are arranged alternately along the C direction.

When the coil 20 is energized, it generates a magnetic field that rotates the rotor. The coil 20 is composed of a flat conductor. The flat conductor is a conductor having a rectangular cross section, and is made of a highly conductive metal (copper, aluminum, etc.). As shown in FIG. 3, the coil 20 is formed by winding one flat conducting wire only a plurality of times (winding in a spiral shape). The coil 20 is formed in a ring shape (hexagonal shape, octagonal shape, etc.).

As shown in FIG. 1, the coil 20 is distributed and wound. A plurality of coils 20 are provided. The plurality of coils 20 are arranged (inserted) in each slot 13. The plurality of coils 20 are arranged along the C direction. The plurality of coils 20 arranged along the C direction constitute the coil assembly 30. The coil assembly 30 is formed in an annular shape.

As shown in FIG. 3, the coil 20 includes a slot accommodating portion 21, a coil end portion 22, and a lead wire portion 23. The slot accommodating portion 21 is a portion of the coil 20 accommodating in the slot 13. The slot accommodating portion 21 is formed in a linear shape extending along the Z direction. As shown in FIG. 1, a pair of slot accommodating portions 21 are formed at intervals in the C direction. The pair of slot accommodating portions 21 are accommodated in different slots 13 spaced apart from each other in the C direction.

As shown in FIG. 3, the coil end portion 22 is a portion of the coil 20 that connects a pair of slot accommodating portions 21 that are spaced apart in the C direction. The coil end portion 22 is formed in a triangular shape when viewed from the R1 side. The coil end portion 22 is formed on the Z1 side and the Z2 side, respectively. As shown in FIG. 1, the coil end portion 22 on the Z1 side connects a pair of slot accommodating portions 21 on the Z1 side and projects from the slot 13 to the Z1 side. The coil end portion 22 on the Z2 side connects a pair of slot accommodating portions 21 on the Z2 side, and projects from the slot 13 to the Z2 side.

The lead wire portion 23 is a portion of the coil 20 to which AC power is supplied from the AC power supply portion or is connected (joined) to the lead wire portion 23 of another coil 20. As shown in FIG. 3, the lead wire portion 23 is formed so as to be bent. As shown in FIG. 1, the lead wire portion 23 is formed in the slot accommodating portion 21 on the most R1 side and the slot accommodating portion 21 on the most R2 side so as to extend continuously from the slot accommodating portion 21. .. Both the lead wire portion 23 on the R1 side and the lead wire portion 23 on the R2 side are formed on the Z2 side. The lead wire portion 23 on the R1 side and the lead wire portion 23 on the R2 side project from the slot 13 to the Z2 side. In the following, the Z2 side provided with the lead wire portion 23 may be referred to as the “lead side”, and the Z1 side not provided with the lead wire portion 23 may be referred to as the “anti-lead side”.

As shown in FIG. 2, the stator 100 includes an insulating member 40. The insulating member 40 is arranged between each slot 13 and the slot accommodating portion 21. The insulating member 40 is configured to electrically insulate the slot 13 and the coil 20. As shown in FIG. 4, the insulating member 40 is a bendable sheet-like member. The insulating member 40 is formed in a shape along the slot 13. Specifically, as shown in FIG. 2, the insulating member 40 is formed in a shape along the inner wall surface 13b of the slot 13 facing each other in the C direction and the inner wall surface 13c on the R2 side. The insulating member 40 is formed into a U shape when viewed from the Z direction by being bent. As shown in FIG. 4, the insulating member 40 includes a pair of side wall portions 41 facing each other in the C direction and a side wall portion 42 connecting the pair of side wall portions 41 on the R2 side.

As shown in FIG. 2, the pair of side wall portions 41 are arranged between the slot accommodating portion 21 and the pair of inner wall surfaces 13b. The pair of side wall portions 41 insulates the slot accommodating portion 21 and the pair of inner wall surfaces 13b. In the insulating member 40, an opening 40a that opens to the R1 side is formed by a portion of the pair of side wall portions 41 on the R1 side.

The side wall portion 42 is arranged between the slot accommodating portion 21 and the inner wall surface 13c. The side wall portion 42 insulates the slot accommodating portion 21 and the inner wall surface 13c. As shown in FIG. 4, in the insulating member 40, the Z1 side portion of the pair of side wall portions 41 and the Z1 side portion of the side wall portions 42 form an opening 40b that opens to the Z1 side. ing. Further, a Z2 side portion of the pair of side wall portions 41 and a Z2 side portion of the side wall portions 42 form an opening 40c that opens to the Z2 side.

(Structure of stator assembly device)
Next, the configuration of the assembly device 200 of the stator 100 will be described with reference to FIGS. 5 to 11.

As shown in FIG. 5, the assembly device 200 is a device that inserts (mounts) the coil 20 (coil assembly 30) into the slot 13 of the stator core 10. The assembly device 200 includes a core holding portion 210, a coil inserting portion 220, and an insulating member opening portion 230.

The core holding portion (pallet) 210 holds the stator core 10 and the coil 20 (coil assembly 30). Specifically, the core holding portion 210 holds the stator core 10 and the coil 20 into which the guide jig 250 is inserted (mounted).

The guide jig 250 is a jig that guides the coil 20 when the coil 20 is inserted into the slot 13 of the stator core 10. The guide jig 250 includes a first guide jig 251 and a second guide jig 252. The first guide jig 251 is a guide jig arranged on the Z2 side with respect to the teeth 12 of the stator core 10. The first guide jig 251 is arranged on the Z1 side and the Z2 side of the stator core 10, respectively. The second guide jig 252 is a guide jig arranged on the R1 side with respect to the teeth 12 of the stator core 10. Both the first guide jig 251 and the second guide jig 252 are arranged for each tooth 12. Both the first guide jig 251 and the second guide jig 252 are inserted into the tooth holes (holes into which the teeth 12 are inserted) of the coil assembly 30.

As shown in FIG. 6, the core holding portion 210 is configured to be rotatable along the C direction by a drive motor 211 (see FIG. 6) that rotates the core holding portion 210 in the C direction. The core holding portion 210 is configured to be rotatable along the C direction while holding the stator core 10 and the coil 20. The stator core 10 and the coil 20 held by the core holding portion 210 are rotated along the C direction together with the core holding portion 210.

The coil insertion portion 220 is a jig for inserting the coil 20 (coil assembly 30) into the slot 13 of the stator core 10. As shown in FIG. 7, the coil insertion portion 220 pushes (pushes) the coil 20 from the R1 side toward the R2 side, thereby moving the coil 20 (coil assembly 30) from the R1 side toward the R2 side. It is configured as follows. The coil insertion portion 220 is configured to insert the slot accommodating portion 21 of the coil 20 into the slot 13 of the stator core 10 by moving the coil 20 from the R1 side to the R2 side.

Here, in the first embodiment, the assembling device 200 moves the coil 20 to the R2 side by performing the operation of pressing the coil 20 toward the R2 side by the coil insertion portion 220 in a plurality of times. It is configured. Further, the assembly device 200 is configured to temporarily separate the coil insertion portion 220 from the coil 20 each time the coil 20 is pressed toward the R2 side.

Specifically, the coil insertion portion 220 is configured to be movable along the R direction by a drive motor 221 (see FIG. 6) that moves the coil insertion portion 220 in the R direction. That is, the coil insertion portion 220 is configured to be movable from the R1 side toward the R2 side and movable from the R2 side toward the R1 side by the drive motor 221. As a result, as shown in FIG. 8, the coil insertion portion 220 moves from the origin position P1 (indicated by the solid line) to the insertion position P2 (indicated by the alternate long and short dash line) and then moves to the retracted position P3 (indicated by the broken line). It is configured to be possible.

The origin position P1 is an initial position where the coil insertion portion 220 is arranged before the insertion work of inserting the coil 20 into the slot 13. The origin position P1 is the position where the coil insertion portion 220 is located closest to the R1 side. The insertion position P2 is a position where the coil insertion portion 220 contacts the coil 20 and pushes the coil 20 when performing the insertion work. The insertion position P2 gradually shifts to the R2 side as the insertion work of the coil 20 progresses. The retracting position P3 is a position where the coil insertion portion 220 temporarily separates from the coil 20 and retracts when the coil insertion portion 220 is rotated relative to the stator core 10 in the C direction during the insertion operation. The retracted position P3 is a position located on the R2 side of the origin position P1 and on the R1 side of the insertion position P2.

In the first embodiment, the coil insertion portion 220 includes a plurality of (eight) coil pressing portions 220a arranged so as to be arranged in a circumferential shape along the C direction. The plurality of coil pressing portions 220a are arranged at equal angular intervals along the C direction. The plurality of coil pressing portions 220a move radially from the R1 side to the R2 side, so that they are separated from each other along the C direction, and the portions of the coils 20 that are different from each other (the portion of the coil assembly 30). Is configured to press. As a result, the coil 20 can be inserted in a wide range at one time, so that the time required for the insertion step of the coil 20 can be shortened. When pressing the coil 20, the plurality of coil pressing portions 220a are moved in synchronization with each other.

In the first embodiment, the assembly device 200 is configured to relatively rotate the plurality of coil pressing portions 220a by a predetermined angle each time the coil 20 is pressed toward the R2 side. Specifically, by rotating the stator core 10 and the coil 20 in the C direction by a predetermined angle, a rotation operation is performed in which the plurality of coil pressing portions 220a are rotated relative to the stator core 10 by a predetermined angle in the C direction. Further, from the position after the relative rotation, the insertion operation of pressing the coil 20 by the plurality of coil pressing portions 220a is performed again. That is, the coil 20 is inserted into the slot 13 of the stator core 10 while the rotation work and the insertion work are alternately performed. In the rotation work, the plurality of coil pressing portions 220a are rotated relative to the stator core 10 in the C direction by a predetermined angle according to the number of coil insertion portions 220. For example, when the number of coil pressing portions 220a is eight, 22.5 degrees (= 360 degrees / 8/2), 11.25 degrees (= 360 degrees / 8/4), and the like are adopted as predetermined angles. be able to.

As shown in FIG. 7, a pair of the plurality of coil pressing portions 220a are provided along the Z direction. It is possible to simultaneously press the Z1 side portion and the Z2 side portion of the coil 20 by the pair of a plurality of coil pressing portions 220a. As a result, when the coil 20 is inserted into the slot 13, it is possible to reduce tilting of the coil 20 on either the R1 side or the R2 side. When pressing the coil 20, the pair of plurality of coil pressing portions 220a are moved in synchronization with each other.

The plurality of coil pressing portions 220a on the Z1 side (anti-lead side) are configured to press the coil end portions 22 on the Z1 side (anti-lead side) of the coil 20. When pressing the coil 20, the plurality of coil pressing portions 220a on the Z1 side are located on the R1 side with respect to the coil end portion 22 on the Z1 side of the coil 20 and at positions facing the coil end portion 22 in the R direction. It is arranged. Further, the plurality of coil pressing portions 220a on the Z2 side (lead side) are configured to push the coil end portions 22 on the Z2 side (lead side) of the coil 20. When pressing the coil 20, the plurality of coil pressing portions 220a on the Z2 side are arranged at positions on the R1 side and facing the R direction with respect to the coil end portion 22 on the Z2 side of the coil 20.

As shown in FIG. 9, the insulating member opening portion 230 includes a first opening jig 232 and a second opening jig 233. As shown in FIG. 10C, the first opening jig 232 is inserted into the insulating member 40 arranged in the slot 13 along the Z direction, and the portion 40d on the R1 side of the insulating member 40 ( It is a jig for opening (including the opening 40a). Specifically, the first opening jig 232 is configured to be inserted into the R1 side portion 40d of the insulating member 40 arranged in the slot 13. Further, the second opening jig 233 is a jig for opening the portion 40e on the R2 side of the insulating member 40. Specifically, the second opening jig 233 is arranged on the R2 side of the first opening jig 232. The second opening jig 233 is configured to be inserted into the R2 side portion 40e of the insulating member 40 arranged in the slot 13.

As shown in FIG. 9, the first opening jig 232 and the second opening jig 233 are configured to be movable along the Z direction by a drive motor 231 (see FIG. 6). That is, the first opening jig 232 and the second opening jig 233 are configured to be movable from the Z1 side to the Z2 side and movable from the Z2 side to the Z1 side, respectively. The drive motor 231 is, for example, a servo motor. Transmission to transmit the driving force of the drive motor 231 to the first opening jig 232 and the second opening jig 233, respectively, between the drive motor 231 and the first opening jig 232 and the second opening jig 233, respectively. A mechanism (not shown) is provided. The transmission mechanism is, for example, a ball screw.

Further, the first opening jig 232 is configured to be movable along the R direction. Specifically, the first opening jig 232 is configured to be relatively movable along the R direction with respect to the second opening jig 233 arranged on the R2 side of the insulating member 40. Specifically, the movement of the second opening jig 233 in the R direction is restricted by the base portion 234 arranged at the lower part (Z2 side) of the insulating member opening portion 230. Further, the first opening jig 232 is connected to the base portion 234 by an urging member 235. The urging member 235 has an urging force that urges the first opening jig 232 to the R1 side. The urging member 235 is, for example, a coil spring. As a result, as shown in FIG. 10 (E), the first opening jig 232 is pressed by the coil insertion portion 220 in the R2 direction via the coil 20 to resist the urging force of the urging member 235. And can move to the R2 side. That is, in the first embodiment, the coil insertion portion 220 is arranged so that the coil 20 is in contact with the R1 side of the first opening jig 232, and the coil 20 is pressed toward the R2 side. By moving both the coil 20 and the first opening jig 232 to the R2 side with respect to the stator core 10, the slot accommodating portion 21 can be inserted into the slot 13 via the opening 13a.

Although not shown, the insulating member opening portion 230 includes a plurality of first opening jigs 232 and a plurality of second opening jigs 233. The plurality of first opening jigs 232 and the plurality of second opening jigs 233 are provided for each slot 13 (insulating member 40). The plurality of first opening jigs 232 and the plurality of second opening jigs 233 are arranged at equal angles with the slots 13 along the C direction.

The first opening jig 232 and the second opening jig 233 are inserted into the insulating member 40 arranged in the slot 13 from the Z1 side (anti-lead side) toward the Z2 side (lead side). The insulating member 40 is configured to open the R1 side portion 40d (opening 40a) and the R2 side portion 40e, respectively. Further, the first opening jig 232 and the second opening jig 233 inserted into the insulating member 40 are insulated arranged in the slot 13 from the Z1 side toward the Z2 side after the coil 20 is inserted into the slot 13. It is configured to be retracted from the member 40.

As shown in FIG. 6, the assembly device 200 includes a control unit 240. The control unit 240 is a control circuit that includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like, and controls the operation of the assembly device 200. The control unit 240 controls the drive motors 211, 221 and 231 to form the core holding unit 210, the coil insertion unit 220 and the insulating member opening unit 230 (first opening jig 232 and second opening jig 233), respectively. It is configured to control the operation of.

Here, in the first embodiment, as shown in FIG. 9, the first opening jig 232 and the second opening jig 233 are configured to be movable independently of each other along the Z direction. Specifically, the second opening jig 233 is configured to be retractable from the insulating member 40 along the Z direction in a state where the first opening jig 232 is inserted into the insulating member 40.

Specifically, as shown in FIGS. 10 (E) and 10 (F), when the coil 20 is inserted into the slot 13, the control unit 240 uses the coil 20 and the first opening jig 232 together. The first opening jig 232 is configured to be controlled to move to the contact position P4 in contact with the second opening jig 233 on the R2 side. Then, as shown in FIG. 11A, the control unit 240 brings the coil 20 and the first opening jig 232 together, and the first opening jig 232 comes into contact with the second opening jig 233 on the R2 side. It is configured to control the second opening jig 233 to be retracted from the insulating member 40 along the Z direction while being moved to the position P4.

Then, as shown in FIG. 11B, the control unit 240 retracts the second opening jig 233 from the insulating member 40 along the Z direction, and arranges the first opening jig 232 on the insulating member 40. The coil insertion portion 220 is configured to control the coil 20 to be further moved to the R2 side by pressing the coil 20 toward the R2 side. Then, as shown in FIGS. 11C and 11D, the control unit 240 installs the first opening jig 232 as an insulating member in a state where the coil 20 is further moved to the R2 side by the coil insertion unit 220. It is configured to control the evacuation from 40 along the Z direction.

(How to assemble the stator)
Next, a method of assembling the stator 100 by the assembling device 200 will be described mainly with reference to FIGS. 10 to 13. In this assembly method, the operations of the core holding portion 210, the coil inserting portion 220, and the insulating member opening portion 230 are controlled by the control unit 240.

As shown in FIG. 12, first, in step S1, an arrangement step of arranging the insulating member 40 in the slot 13 is performed. Specifically, as shown in FIG. 13, the insulating member 40 is arranged in the slot 13 by inserting the insulating member 40 from the R1 side toward the R2 side through the opening 13a of the slot 13. (The state shown in FIG. 10 (A) is obtained). Before the opening step (step S3) of opening the insulating member 40, the opening 40a of the insulating member 40 is in a closed state rather than in a completely opened state like the rightmost insulating member 40 in FIG. It may be.

Next, as shown in FIG. 12, in step S2, an arrangement step of arranging the coil 20 on the R1 side of the stator core 10 is performed. Specifically, as shown in FIG. 10B, the coil 20 is arranged at a position facing the teeth 12 and the slot 13 of the stator core 10 in the R direction. Then, as shown in FIG. 5, the first guide jig 251 and the second guide jig 252 of the guide jig 250 are inserted (mounted) into the stator core 10 and the coil 20. Then, the stator core 10 and the coil 20 into which the guide jig 250 is inserted are held by the core holding portion 210.

Next, as shown in FIG. 12, in step S3, the first opening jig 232 and the second opening jig 233 are inserted into the insulating member 40 along the Z direction, and the portions of the insulating member 40 on the R1 side, respectively. An opening step is performed to open the 40d and the portion 40e on the R2 side. Specifically, as shown in FIG. 10C, the first insulating member opening portion 230 is provided in the insulating member 40 arranged in the slot 13 from the Z1 side (anti-lead side) to the Z2 side (lead side). The opening jig 232 and the second opening jig 233 are inserted. The first opening jig 232 and the second opening jig 233 are inserted into the R1 side portion 40d (opening 40a) and the R2 side portion 40e of the insulating member 40, respectively. When the first opening jig 232 and the second opening jig 233 are inserted, the R1 side portion 40d (opening 40a) and the R2 side portion 40e of the insulating member 40 are opened.

Then, as shown in FIG. 12, in step S4, with the coil 20 arranged so as to come into contact with the R1 side of the first opening jig 232, the coil insertion portion 220 causes the coil 20 to move toward the R2 side. Insertion step of inserting the slot accommodating portion 21 into the slot 13 via the opening 13a by moving both the coil 20 and the first opening jig 232 to the R2 side with respect to the stator core 10 by pressing. Is done. In the first embodiment, in the insertion step (S4), the first opening jig 232 and the second opening jig 233 are independently and stepwise retracted from the insulating member 40 along the Z direction.

Specifically, first, as shown in FIGS. 10 (D) to 10 (F), both the coil 20 and the first opening jig 232 have the first opening jig 232 on the R2 side for the second opening cure. It is moved to the contact position P4 in contact with the tool 233. After that, as shown in FIG. 11A, the second opening jig 233 is retracted from the insulating member 40 along the Z direction. After that, as shown in FIGS. 11B and 11C, the coil 20 is brought into contact with the first opening jig 232 by the coil insertion portion 220, and the first opening jig 232 is R2 of the insulating member 40. The coil 20 is further moved to the R2 side until it is placed in the side portion 40e. After that, as shown in FIG. 11D, the first opening jig 232 is retracted from the insulating member 40 along the Z direction. After that, as shown in FIGS. 11 (E) and 11 (F), the coil insertion portion 220 causes the coil 20 to move to the R2 side until the coil 20 is arranged in the portion 40e on the R2 side of the insulating member 40. Move it further. This completes the insertion process.

In the first embodiment, in the insertion step (S4), the coil 20 is moved to the R2 side by performing the operation of pressing the coil 20 toward the R2 side by the coil insertion portion 220 in a plurality of times. Further, each time the coil 20 is pressed toward the other side (R2 side) in the radial direction (R direction), the coil insertion portion 220 is temporarily separated from the coil 20. Further, each time the coil 20 is pressed toward the R2 side, the plurality of coil pressing portions 220a are relatively rotated by a predetermined angle.

[Second Embodiment]
Next, the configuration of the stator 100 assembly device 300 according to the second embodiment will be described with reference to FIGS. 14 and 15. In the figure, the same reference numerals are given to the parts having the same configuration as that of the first embodiment.

As shown in FIG. 14, the assembly device 300 includes a control unit 340.

As shown in FIG. 15, in the second embodiment, similarly to the first embodiment, the first opening jig 232 and the second opening jig 233 are configured to be movable independently of each other along the Z direction. Has been done. On the other hand, in the second embodiment, unlike the first embodiment, the first opening jig 232 can be retracted from the insulating member 40 along the Z direction in a state where the second opening jig 233 is inserted into the insulating member 40. It is configured in.

Specifically, as shown in FIG. 15A, in the control unit 340, the coil 20 and the first opening jig 232 are both provided, and the first opening jig 232 is attached to the second opening jig 233 on the R2 side. It is configured to control the first opening jig 232 to be retracted from the insulating member 40 along the Z direction while being moved to the contact position P4. Then, as shown in FIG. 15B, the control unit 340 retracts the first opening jig 232 from the insulating member 40 along the Z direction and arranges the second opening jig 233 on the insulating member 40. The coil insertion portion 220 is configured to control the coil 20 to be further moved to the R2 side by pressing the coil 20 toward the R2 side. Then, as shown in FIGS. 15C and 15D, the control unit 340 installs the second opening jig 233 as an insulating member in a state where the coil 20 is further moved to the R2 side by the coil insertion unit 220. It is configured to control the evacuation from 40 along the Z direction.

The other configurations of the second embodiment are the same as those of the first embodiment.

(How to assemble the stator)
Next, a method of assembling the stator 100 by the assembling device 300 will be described mainly with reference to FIG.

Until the step of moving both the coil 20 of steps S1 to S3 and step S4 and the first opening jig 232 to the contact position P4 where the first opening jig 232 contacts the second opening jig 233 on the R2 side. , The method of assembling the stator 100 by the assembling device 200 is the same.

After moving both the coil 20 and the first opening jig 232 to the contact position P4 where the first opening jig 232 contacts the second opening jig 233 on the R2 side, as shown in FIG. 15 (A). , The first opening jig 232 is retracted from the insulating member 40 along the Z direction. After that, as shown in FIGS. 15B and 15C, the coil 20 comes into contact with the second opening jig 233 by the coil insertion portion 220, and the second opening jig 233 is brought into contact with the insulating member 40 R2. The coil 20 is further moved to the R2 side until it is placed in the side portion 40e. After that, as shown in FIG. 15 (D), the second opening jig 233 is retracted from the insulating member 40 along the Z direction. Subsequent steps are the same as the method of assembling the stator 100 by the assembling device 300.

[Effect of Embodiment]
In the first and second embodiments, the following effects can be obtained.

(Effect of stator assembly device)
In the first and second embodiments, as described above, the first opening jig (232) and the second opening jig (233) can move independently of each other along the axial direction (Z direction). It is configured in. As a result, one of the first opening jig (232) and the second opening jig (233) is retracted from the insulating member (40) along the axial direction (Z direction), and the first opening jig (232) is retracted. ) And the second opening jig (233) can be arranged in the insulating member (40). As a result, one of the first opening jig (232) and the second opening jig (233) is retracted from the insulating member (40) along the axial direction (Z direction), and then the first opening jig is retracted. With only the other of (232) and the second opening jig (233) arranged on the insulating member (40), the retracted first opening jig (232) and second opening jig (233) The coil (20) can be further moved to the other side (R2 side) in the radial direction (R direction) by the amount of one of the spaces. As a result, the other of the first opening jig (232) and the second opening jig (233) is in a state where the coil (20) is further moved to the other side (R2 side) in the radial direction (R direction). Can be retracted from the insulating member (40) along the axial direction (Z direction). That is, as compared with the case where the first opening jig (232) and the second opening jig (233) are simultaneously retracted from the insulating member (40), the insulating member (40) has the first opening jig (232) and the first opening jig (232). The distance for moving the coil (20) can be reduced in a state where the second opening jig (233) is not arranged together. As a result, it is possible to prevent the shape of the insulating member (40) from collapsing without opening the insulating member (40), and to further secure the insulation between the coil (20) and the slot (13). (200, 300) can be provided.

Further, in the first and second embodiments, as described above, one of the first opening jig (232) and the second opening jig (233) is inserted into the insulating member (40). , The other of the first opening jig (232) and the second opening jig (233) is configured to be retractable from the insulating member (40) along the axial direction (Z direction). With this configuration, one of the first opening jig (232) and the second opening jig (233) is retracted from the insulating member (40) along the axial direction (Z direction) to ensure that one of them is retracted along the axial direction (Z direction). Only the other of the first opening jig (232) and the second opening jig (233) can be arranged on the insulating member (40).

Further, in the first and second embodiments, as described above, the first opening jig (232) is arranged on the other side (R2 side) of the insulating member (40) in the radial direction (R direction). It is configured to be relatively movable along the radial direction (R direction) with respect to the second opening jig (233). With this configuration, both the coil (20) and the first opening jig (232) are second-opened by the first opening jig (232) on the other side (R2 side) in the radial direction (R direction). It can be reliably moved to the contact position P4 in contact with the jig (233).

Further, in the first and second embodiments, as described above, the control unit (240) that controls the operation of the coil insertion unit (220), the first opening jig (232), and the second opening jig (233). 340) is further provided, and the control unit (240, 340) first opens both the coil (20) and the first opening jig (232) to the other side (R2 side) in the radial direction (R direction). One of the first opening jig (232) and the second opening jig (233) with the jig (232) moved to the contact position (P4) in contact with the second opening jig (233). Is controlled to retract from the insulating member (40) along the axial direction (Z direction), and one of the first opening jig (232) and the second opening jig (233) is provided with the insulating member (40). With the other of the first opening jig (232) and the second opening jig (233) arranged on the insulating member (40) while retracting from The 220) is configured to control the coil (20) to be further moved to the other side (R2 side) in the radial direction (R direction). With this configuration, the first opening jig (232) and the second opening jig (232) and the second opening jig (232) with the coil (20) and the first opening jig (232) both moved to the contact position (P4). One of the 233) can be easily retracted from the insulating member (40) along the axial direction (Z direction). Further, one of the first opening jig (232) and the second opening jig (233) is retracted from the insulating member (40) along the axial direction (Z direction), and the first opening jig (232) is retracted. With the other of the second opening jig (233) arranged on the insulating member (40), the coil (20) can be easily further moved to the other side (R2 side) in the radial direction (R direction). Can be done.

Further, in the first and second embodiments, as described above, the control unit (240, 340) uses the coil insertion unit (220) to move the coil (20) to the other side (R2 side) in the radial direction (R direction). ), And the other of the first opening jig (232) and the second opening jig (233) is retracted from the insulating member (40) along the axial direction (Z direction). It is configured to do. With this configuration, the first opening jig (232) and the second opening jig (233) are in a state where the coil (20) is further moved to the other side (R2 side) in the radial direction (R direction). The other of the two can be easily retracted from the insulating member (40) along the axial direction (Z direction).

Further, in the first and second embodiments, as described above, the control unit (240, 340) uses the coil insertion unit (220) to move the coil (20) to the other side (R2 side) in the radial direction (R direction). ), The coil (20) comes into contact with the other of the first opening jig (232) and the second opening jig (233), and the first opening jig (232) and the second opening jig (232) and the second opening jig (233). The first opening jig (232) is in a state where the other of the opening jigs (233) is arranged on the other side (R2 side) portion (40e) of the insulating member (40) in the radial direction (R direction). It is configured to control the other of the second opening jig (233) to be retracted from the insulating member (40) along the axial direction (Z direction). With this configuration, only one of the first opening jig (232) and the second opening jig (233) is arranged on the insulating member (40), and the other side in the radial direction (R direction). The coil (20) can be further moved to the limit position where it can be moved to (R2 side). As a result, the distance for moving the coil (20) can be reliably reduced in a state where the first opening jig (232) and the second opening jig (233) are not arranged together on the insulating member (40). ..

Further, in the first embodiment, as described above, the control unit (240) has both the coil (20) and the first opening jig (232) on the other side (R2 side) in the radial direction (R direction). ) To the contact position (P4), the second opening jig (233) is controlled to retract from the insulating member (40) along the axial direction (Z direction), and the second opening jig (Z direction) is retracted. (233) is retracted from the insulating member (40) along the axial direction (Z direction), and the first opening jig (232) is arranged on the insulating member (40), and the coil is inserted by the coil insertion portion (220). It is configured to control the movement of (20) further to the other side (R2 side) in the radial direction (R direction). With this configuration, both the coil (20) and the first opening jig (232) are moved to the contact position (P4) on the other side (R2 side) in the radial direction (R direction). While maintaining the relative positions of the coil (20) and the first opening jig (232), both the coil (20) and the first opening jig (232) are placed on the other side (R2) in the radial direction (R direction). Can be moved further to the side). As a result, the insulating member (40) can be surely opened in the vicinity of the side (R2 side) where the coil (20) of the coil (20) moves, so that the coil (20) can be moved in the radial direction (20). When the insulating member (40) is further moved to the other side (R2 side) in the R direction, it is possible to effectively prevent the insulating member (40) from being deformed without being opened.

Further, in the first and second embodiments, as described above, in the coil insertion portion (220), the coil (20) is on one side (R1) of the first opening jig (232) in the radial direction (R direction). By pressing the coil (20) toward the other side (R2 side) in the radial direction (R direction) while being arranged so as to be in contact with the side), the coil (20) and the first opening jig (1st opening jig) ( Both 232) and the stator core (10) are configured to move in the other side (R2 side) in the radial direction (R direction). With this configuration, the coil insertion portion (220) allows both the coil (20) and the first opening jig (232) to be placed on the other side (R2) in the radial direction (R direction) with respect to the stator core (10). Can be easily moved to the side).

Further, in the first and second embodiments, as described above, a plurality of operations of pressing the coil (20) by the coil insertion portion (220) toward the other side (R2 side) in the radial direction (R direction) are performed. It is configured to move the coil (20) to the other side (R2 side) in the radial direction (R direction) by performing the coil (20) in a divided manner. With this configuration, the amount of movement that moves the coil (20) to the other side (R2 side) in the radial direction (R direction) by one pressing of the coil (20) by the coil insertion portion (220) can be reduced. Can be done. As a result, when the coil (20) moves toward the other side (R2 side) in the radial direction (R direction), a part of the coil (20) (the root portion of the lead wire portion) becomes a slot (13). It is possible to prevent plastic deformation due to being pressed against the corner portion in the axial direction (Z direction) in the circumferential direction (C direction).

Further, in the first and second embodiments, as described above, each time the coil (20) is pressed toward the other side (R2 side) in the radial direction (R direction), the coil insertion portion ( The 220) is configured to be temporarily separated from the coil (20). With this configuration, each time the operation of pressing the coil (20) is performed, the pressing of the coil (20) by the coil insertion portion (220) can be released once, so that a part of the coil (20) ( It is possible to reliably prevent the root portion of the lead wire portion) from being plastically deformed.

Further, in the first and second embodiments, as described above, the coil insertion portions (220) are arranged so as to be arranged in a circumferential shape along the circumferential direction (C direction) of the stator core (10). Each time the coil pressing portion (220a) is included and the coil (20) is pressed toward the other side (R2 side) in the radial direction (R direction), the plurality of coil pressing portions (220a) are pressed by a predetermined angle. It is configured to rotate relative to each other. With this configuration, even if the relative positions of the plurality of coil pressing portions (220a) in the circumferential direction (C direction) change as the coil insertion portion (220) moves in the radial direction (R direction). By rotating the plurality of coil pressing portions (220a) relative to each other by a predetermined angle each time the coil (20) is pressed, the coil (20) is pressed by the plurality of coil pressing portions (220a) in the circumferential direction (20a). It can be made uniform in the C direction).

(Effect of stator assembly method)
In the first and second embodiments, as described above, in the insertion step (S4) of inserting the slot accommodating portion 21 into the slot 13, the first opening jig (232) and the second opening jig (233) are used. Is independently and stepwise retracted from the insulating member (40) along the axial direction (Z direction). As a result, one of the first opening jig (232) and the second opening jig (233) is retracted from the insulating member (40) along the axial direction (Z direction), and the first opening jig (232) is retracted. ) And the second opening jig (233) can be arranged in the insulating member (40). As a result, one of the first opening jig (232) and the second opening jig (233) is retracted from the insulating member (40) along the axial direction (Z direction), and then the first opening jig is retracted. With only the other of (232) and the second opening jig (233) arranged on the insulating member (40), the retracted first opening jig (232) and second opening jig (233) The coil (20) can be further moved to the other side in the radial direction (R direction) by the amount of one of the spaces. As a result, the other of the first opening jig (232) and the second opening jig (233) is in a state where the coil (20) is further moved to the other side (R2 side) in the radial direction (R direction). Can be retracted from the insulating member (40) along the axial direction (Z direction). That is, as compared with the case where the first opening jig (232) and the second opening jig (233) are simultaneously retracted from the insulating member (40), the insulating member (40) has a guide jig (232). The distance for moving the coil (20) can be reduced in a state where the second opening jig (233) is not arranged together. As a result, when the coil (20) is inserted into the slot (13) of the stator core (10), the insulating member (40) is not opened and the shape of the insulating member (40) is prevented from being deformed. It is possible to further secure the insulation between (20) and the slot (13).

Further, in the first and second embodiments, as described above, in the insertion step (S4), both the coil (20) and the first opening jig (232) are placed on the other side in the radial direction (R direction). After moving the first opening jig (232) to the contact position (P4) where the first opening jig (232) contacts the second opening jig (233) on the (R2 side), the first opening jig (232) and the second opening jig One of (233) is retracted from the insulating member (40) along the axial direction (Z direction), and then the coil (20) is moved to the other side in the radial direction (R direction) by the coil insertion portion (220). Move it further to (R2 side). With this configuration, after the coil (20) is further moved to the other side (R2 side) in the radial direction (R direction), the first opening jig (232) and the second opening jig (233) By retracting the other of them from the insulating member (40) along the axial direction (Z direction), the first opening jig (232) and the second opening jig (233) are independently and stepwise. , It can be retracted from the insulating member (40) along the axial direction (Z direction).

Further, in the first and second embodiments, as described above, in the insertion step (S4), the coil insertion portion (220) causes the coil (20) to move to the other side (R2 side) in the radial direction (R direction). After further moving, the other of the first opening jig (232) and the second opening jig (233) is retracted from the insulating member (40) along the axial direction (Z direction). With this configuration, the first opening jig (232) and the second opening jig (233) are surely, independently and stepwise from the insulating member (40) in the axial direction (Z direction). It can be evacuated along.

Further, in the first and second embodiments, as described above, in the insertion step (S4), the coil (20) is moved by the coil insertion portion (220) to the first opening jig (232) and the second opening cure. While contacting the other of the tools (233), the other of the first opening jig (232) and the second opening jig (233) is the other side of the insulating member (40) in the radial direction (R direction). After further moving the coil (20) to the other side (R2 side) in the radial direction (R direction) until it is placed in the portion (40e) on the (R2 side), the first opening jig (232) And the other of the second opening jig (233) is retracted from the insulating member (40) along the axial direction (Z direction). With this configuration, only one of the first opening jig (232) and the second opening jig (233) is arranged on the insulating member (40), and the other side in the radial direction (R direction). The coil (20) can be further moved to the limit position where it can be moved to (R2 side). As a result, the distance for moving the coil (20) can be reliably reduced in a state where the first opening jig (232) and the second opening jig (233) are not arranged together on the insulating member (40). ..

Further, in the first embodiment, as described above, in the insertion step (S4), both the coil (20) and the first opening jig (232) are placed on the other side (R2 side) in the radial direction (R direction). ) To the contact position (P4), the second opening jig (233) is retracted from the insulating member (40) along the axial direction (Z direction), and then by the coil insertion portion (220). The coil (20) is further moved to the other side (R2 side) in the radial direction (R direction). With this configuration, both the coil (20) and the first opening jig (232) are moved to the contact position (P4) on the other side (R2 side) in the radial direction (R direction). While maintaining the relative positions of the coil (20) and the first opening jig (232), both the coil (20) and the first opening jig (232) are placed on the other side (R2) in the radial direction (R direction). Can be moved further to the side). As a result, the insulating member (40) can be surely opened in the vicinity of the side (R2 side) where the coil (20) of the coil (20) moves, so that the coil (20) can be moved in the radial direction (20). When the insulating member (40) is further moved to the other side (R2 side) in the R direction, it is possible to effectively prevent the insulating member (40) from being deformed without being opened.

Further, in the first and second embodiments, as described above, in the insertion step (S4), the coil (20) is on one side (R1 side) of the first opening jig (232) in the radial direction (R direction). ), By pressing the coil (20) toward the other side (R2 side) in the radial direction (R direction) by the coil insertion portion (220), the coil (20) And the first opening jig (232) are both moved to the other side (R2 side) in the radial direction (R direction) with respect to the stator core (10). With this configuration, the coil insertion portion (220) allows both the coil (20) and the first opening jig (232) to be placed on the other side (R2) in the radial direction (R direction) with respect to the stator core (10). Can be easily moved to the side).

Further, in the first and second embodiments, as described above, in the insertion step (S4), the coil (20) by the coil insertion portion (220) is moved to the other side (R2 side) in the radial direction (R direction). The coil (20) is moved to the other side (R2 side) in the radial direction (R direction) by performing the operation of pressing toward the direction in a plurality of times. With this configuration, the amount of movement that moves the coil (20) to the other side (R2 side) in the radial direction (R direction) by one pressing of the coil (20) by the coil insertion portion (220) can be reduced. Can be done. As a result, when the coil (20) moves toward the other side (R2 side) in the radial direction (R direction), a part of the coil (20) (the root portion of the lead wire portion) becomes a slot (13). It is possible to prevent plastic deformation due to being pressed against the corner portion in the axial direction (Z direction) in the circumferential direction (C direction).

Further, in the first and second embodiments, as described above, in the insertion step (S4), the operation of pressing the coil (20) toward the other side (R2 side) in the radial direction (R direction) is performed. Each time, the coil insertion portion (220) is temporarily separated from the coil (20). With this configuration, each time the operation of pressing the coil (20) is performed, the pressing of the coil (20) by the coil insertion portion (220) can be released once, so that a part of the coil (20) ( It is possible to reliably prevent the root portion of the lead wire portion) from being plastically deformed.

Further, in the first and second embodiments, as described above, the coil insertion portions (220) are arranged so as to be arranged in a circumferential shape along the circumferential direction (C direction) of the stator core (10). A plurality of coil pressing portions including the coil pressing portion (220a) each time the coil (20) is pressed toward the other side (R2 side) in the radial direction (R direction) in the insertion step (S4). (220a) is relatively rotated by a predetermined angle. With this configuration, even if the relative positions of the plurality of coil pressing portions (220a) in the circumferential direction (C direction) change as the coil insertion portion (220) moves in the radial direction (R direction). By rotating the plurality of coil pressing portions (220a) relative to each other by a predetermined angle each time the coil (20) is pressed, the coil (20) is pressed by the plurality of coil pressing portions (220a) in the circumferential direction (20a). It can be made uniform in the C direction).

[Modification example]
It should be noted that the embodiments disclosed this time are exemplary in all respects and are not considered to be restrictive. The scope of the present invention is shown by the scope of claims rather than the description of the above-described embodiment, and further includes all modifications (modifications) within the meaning and scope equivalent to the scope of claims.

For example, in the first and second embodiments, each time the coil 20 is pressed toward the other side (R2 side) in the radial direction (R direction), the plurality of coil pressing portions 220a are relative to each other by a predetermined angle. Although an example configured to rotate is shown, the present invention is not limited to this. In the present invention, each time the operation of pressing the coil toward the other side in the radial direction is performed a plurality of times, the plurality of coil pressing portions may be configured to rotate relative to each other. Further, the plurality of coil pressing portions may be configured so as not to rotate relative to each other.

Further, in the first and second embodiments, the coil insertion portion 220 is temporarily separated from the coil 20 each time the coil 20 is pressed toward the other side (R2 side) in the radial direction (R direction). Although the example configured as described above is shown, the present invention is not limited to this. In the present invention, the coil insertion portion may be temporarily separated from the coil each time the operation of pressing the coil toward the other side in the radial direction is performed a plurality of times. Further, the coil insertion portion may be configured so as not to be separated from the coil once.

Further, in the first and second embodiments, the coil 20 is pressed by the coil insertion portion 220 toward the other side (R2 side) in the radial direction (R direction) by performing the operation of pressing the coil 20 in a plurality of times. An example is shown in which 20 is configured to move in the other side (R2 side) in the radial direction (R direction), but the present invention is not limited to this. In the present invention, the operation of pressing the coil toward the other side in the radial direction by the coil insertion portion is continuously performed without being divided into a plurality of times so that the coil is moved to the other side in the radial direction. It may be configured.

Further, in the first and second embodiments, the coil insertion portion 220 is arranged so that the coil 20 is in contact with one side (R1 side) of the first opening jig 232 in the radial direction (R direction). Then, by pressing the coil 20 toward the other side (R2 side) in the radial direction (R direction), both the coil 20 and the first opening jig 232 are radially (R direction) with respect to the stator core 10. Although an example is shown in which the coil is configured to move to the other side (R2 side), the present invention is not limited to this. In the present invention, the coil insertion portion is arranged so that the coil does not come into contact with one side in the radial direction of the first opening jig, and the coil is not pressed toward the other side in the radial direction. Both the opening jig and the opening jig may be configured to be moved to the other side in the radial direction with respect to the stator core. In that case, for example, by pressing the coil and the first opening jig individually, the coil inserting portion is moved together with the first opening jig to the other side in the radial direction with respect to the stator core. It may be configured so that the coil and the first opening jig are individually pulled so that both the first opening jig and the first opening jig are moved to the other side in the radial direction with respect to the stator core. good.

Further, in the first and second embodiments, the coil 20 and the first opening jig 232 are both opened and cured by the first opening jig 232 on the other side (R2 side) in the radial direction (R direction). While moving to the contact position P4 in contact with the tool 233, one of the first opening jig 232 and the second opening jig 233 is retracted from the insulating member 40 along the axial direction (Z direction). One of the first opening jig 232 and the second opening jig 233 is retracted from the insulating member 40 along the axial direction (Z direction), and one of the first opening jig 232 and the second opening jig 233 is retracted. An example is shown in which the coil 20 is further moved to the other side (R2 side) in the radial direction (R direction) by the coil insertion portion 220 with the other side arranged on the insulating member 40. Not limited to this. In the present invention, both the coil and the first opening jig are moved to the other side in the radial direction to a position on one side in the radial direction from the contact position where the first opening jig contacts the second opening jig. In this state, one of the first opening jig and the second opening jig is retracted from the insulating member along the axial direction, and one of the first opening jig and the second opening jig is retracted from the insulating member. With the other of the first opening jig and the second opening jig arranged on the insulating member while retracting along the axial direction, the coil is further moved to the other side in the radial direction by the coil insertion portion. It may be configured.

Further, in the first and second embodiments, the "one side in the radial direction" and the "other side in the radial direction" of the claims are configured as the inside and the outside in the radial direction (R direction), respectively. However, the present invention is not limited to this. In the present invention, the "one side in the radial direction" and the "other side in the radial direction" of the claims may be configured as the outer side and the inner side in the radial direction, respectively.

10 Stator core 13 Slot 13a Opening 20 Coil 21 Slot accommodating part 40 Insulation member 40d One side part in the radial direction 40e (Insulation member) The other side part in the radial direction 100 Stator 200, 300 Assembling the stator Device 220 Coil insertion part 220a Coil pressing part 232 First opening jig 233 Second opening jig 240, 340 Control unit P4 (The first opening jig contacts the second opening jig) Contact position

Claims (20)

A stator core including a slot having an opening that opens on one side in the radial direction, a coil including a slot accommodating portion accommodated in the slot, and an insulating member arranged between the slot and the slot accommodating portion. It is an assembly device of a stator equipped with
One side of the insulating member in the radial direction, which is configured to be movable along the axial direction and the radial direction of the stator core and is inserted along the axial direction into the insulating member arranged in the slot. The first opening jig that opens the part of
A second opening that is arranged on the other side in the radial direction from the first opening jig and is configured to be movable along the axial direction to open the other side portion of the insulating member in the radial direction. Jig and
With the coil arranged on one side of the first opening jig in the radial direction, both the coil and the first opening jig are moved to the other side in the radial direction with respect to the stator core. Thereby, the slot accommodating portion is provided with a coil insertion portion for inserting the slot accommodating portion into the slot through the opening.
A stator assembly device in which the first opening jig and the second opening jig are configured to be movable independently of each other along the axial direction. With one of the first opening jig and the second opening jig inserted into the insulating member, the other of the first opening jig and the second opening jig is from the insulating member. The stator assembling device according to claim 1, which is configured to be retractable along the axial direction. The first opening jig is configured to be relatively movable along the radial direction with respect to the second opening jig arranged on the other side of the insulating member in the radial direction. Alternatively, the stator assembly apparatus according to 2. A control unit for controlling the operation of the coil insertion unit, the first opening jig, and the second opening jig is further provided.
The control unit moves both the coil and the first opening jig to the other side in the radial direction to a contact position where the first opening jig comes into contact with the second opening jig. Control is performed so that one of the first opening jig and the second opening jig is retracted from the insulating member along the axial direction, and of the first opening jig and the second opening jig. The coil is retracted from the insulating member along the axial direction, and the other of the first opening jig and the second opening jig is arranged on the insulating member, and the coil is inserted by the coil insertion portion. The stator assembling device according to claim 3, which is configured to control the movement of the jig to the other side in the radial direction. The control unit further moves the coil to the other side in the radial direction by the coil insertion unit, and then removes the other of the first opening jig and the second opening jig from the insulating member. The stator assembling device according to claim 4, which is configured to control retracting along the axial direction. The control unit further moves the coil to the other side in the radial direction by the coil insertion unit, so that the coil comes into contact with the other of the first opening jig and the second opening jig. , The first opening jig and the second opening jig in a state where the other of the first opening jig and the second opening jig is arranged on the other side portion of the insulating member in the radial direction. The stator assembly device according to claim 5, wherein the other of the jigs is controlled to be retracted from the insulating member along the axial direction. The control unit moves the coil and the first opening jig to the other side in the radial direction to the contact position, and then moves the second opening jig from the insulating member in the axial direction. While controlling the retracting along the line, the second opening jig is retracted from the insulating member along the axial direction, and the first opening jig is arranged on the insulating member by the coil insertion portion. The stator assembling device according to any one of claims 4 to 6, which is configured to control the coil to be further moved to the other side in the radial direction. The coil insertion portion is arranged by pressing the coil toward the other side in the radial direction while the coil is arranged so as to contact one side in the radial direction of the first opening jig. The stator assembly according to any one of claims 1 to 7, wherein both the coil and the first opening jig are configured to move to the other side in the radial direction with respect to the stator core. Device. Claimed that the coil is moved to the other side in the radial direction by performing the operation of pressing the coil toward the other side in the radial direction by the coil insertion portion in a plurality of times. Item 8. The stator assembly apparatus according to item 8. The stator assembling device according to claim 9, wherein the coil insertion portion is temporarily separated from the coil each time the coil is pressed toward the other side in the radial direction. The coil insertion portion includes a plurality of coil pressing portions arranged so as to be arranged in a circumferential shape along the circumferential direction of the stator core.
The stator assembly apparatus according to claim 10, wherein each time the coil is pressed toward the other side in the radial direction, the plurality of coil pressing portions are relatively rotated by a predetermined angle. .. A stator core including a slot having an opening that opens on one side in the radial direction, a coil including a slot accommodating portion accommodated in the slot, and an insulating member arranged between the slot and the slot accommodating portion. It is a method of assembling a stator equipped with
An arrangement step of arranging the insulating member in the slot, and
After the arrangement step, the first opening jig and the second opening jig are inserted into the insulating member along the axial direction of the stator core, and one side portion of the insulating member in the radial direction and the diameter thereof, respectively. An opening process that opens the other part of the direction,
After the opening step, in a state where the coil is arranged on one side of the first opening jig in the radial direction, both the coil and the first opening jig are placed on the stator core by the coil insertion portion. On the other hand, the insertion step of inserting the slot accommodating portion into the slot through the opening by moving the slot accommodating portion to the other side in the radial direction is provided.
A method for assembling a stator in which the first opening jig and the second opening jig are independently and stepwise retracted from the insulating member along the axial direction in the insertion step. In the insertion step, both the coil and the first opening jig are moved to the other side in the radial direction to a contact position where the first opening jig comes into contact with the second opening jig, and then the above. One of the first opening jig and the second opening jig is retracted from the insulating member along the axial direction, and then the coil is further moved to the other side in the radial direction by the coil insertion portion. The method for assembling the stator according to claim 12. In the insertion step, after the coil is further moved to the other side in the radial direction by the coil insertion portion, the other of the first opening jig and the second opening jig is moved from the insulating member to the shaft. The method for assembling a stator according to claim 13, wherein the stator is retracted along the direction. In the insertion step, the coil insertion portion causes the coil to come into contact with the other of the first opening jig and the second opening jig, and the first opening jig and the second opening jig. The coil is further moved to the other side in the radial direction until the other of them is arranged on the other side in the radial direction of the insulating member, and then the first opening jig and the second opening jig are used. The method for assembling a stator according to claim 14, wherein the other of the opening jigs is retracted from the insulating member along the axial direction. In the insertion step, after moving both the coil and the first opening jig to the contact position on the other side in the radial direction, the second opening jig is moved from the insulating member along the axial direction. The method for assembling a stator according to any one of claims 13 to 15, wherein the coil is further moved to the other side in the radial direction by the coil insertion portion. In the insertion step, in a state where the coil is arranged so as to come into contact with one side of the first opening jig in the radial direction, the coil insertion portion causes the coil to move toward the other side in the radial direction. The method for assembling a stator according to any one of claims 12 to 16, wherein both the coil and the first opening jig are moved to the other side in the radial direction with respect to the stator core by pressing. .. The claim that the coil is moved to the other side in the radial direction by performing the operation of pressing the coil toward the other side in the radial direction by the coil insertion portion in a plurality of times in the insertion step. 17. The method for assembling a stator according to 17. The method for assembling a stator according to claim 18, wherein in the insertion step, each time the coil is pressed toward the other side in the radial direction, the coil insertion portion is temporarily separated from the coil. The coil insertion portion includes a plurality of coil pressing portions arranged so as to be arranged in a circumferential shape along the circumferential direction of the stator core.
The method for assembling a stator according to claim 19, wherein in the insertion step, each time the coil is pressed toward the other side in the radial direction, the plurality of coil pressing portions are relatively rotated by a predetermined angle.

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