JP2023176648A - Assembly method of stator and assembly device of stator - Google Patents

Abstract

To provide an assembly device of a stator capable of improving assembly efficiency, while suppressing damage of components.SOLUTION: An assembly device 1 of a stator 100 having a plurality of stator cores 102 arranged annularly has a holding part 70. The stator 100 has a plurality of sets of stator core pairs 101 formed by winding coil wire 104 connected by crossover 105 around each of a pair of stator cores 102 in a state after assembling. The holding part 70 can hold the stator core pairs 101 on a reference circle Cr1.SELECTED DRAWING: Figure 5

Description

The present invention relates to a stator assembly method and a stator assembly apparatus.

Conventionally, a stator in which a plurality of stator cores are arranged in an annular manner is known. For example, Patent Document 1 discloses a method for assembling such a stator. In the method of Patent Document 1, a plurality of stator cores that are continuously connected by a connecting wire are arranged in a straight line, and the connecting wire is rounded into an annular shape while being detoured by a connecting wire detouring means, and the stator cores are assembled. ing.

Japanese Patent Application Publication No. 2011-172430

In the method of Patent Document 1, when a plurality of stator cores connected by a crossover wire are rolled into an annular shape, it is necessary to detour the crossover wire using a crossover wire detouring means. Therefore, stress is applied to the connecting wire, which may cause damage to the connecting wire, and may reduce assembly efficiency.

An object of the present invention is to provide a stator assembly method and a stator assembly apparatus that can improve assembly efficiency while suppressing damage to members.

A first aspect of the present invention is a method for assembling a stator (100) having a plurality of annularly arranged stator cores (102), including an assembling step. In the assembled state, the stator has a plurality of stator core pairs (101) formed by winding coil wires (104) connected by crossover wires (105) around each of a pair of stator cores. .

In the assembly process, a plurality of stator core pairs are moved from the radially outer side to the radially inner side of the reference circle (Cr1) and arranged on the reference circle, and the stator cores are assembled into an annular shape. Therefore, when assembling the stator, it is not necessary to round the plurality of stator cores into an annular shape while detouring the wires using a wire detouring means as in the prior art (Patent Document 1), which puts stress on the wires. In addition, it is possible to suppress a decrease in assembly work efficiency. Thereby, it is possible to improve the efficiency of stator assembly while suppressing damage to the crossover wire.

A second aspect of the present invention is an assembly device for a stator (100) having a plurality of annularly arranged stator cores (102), and includes a holding portion. In the assembled state, the stator has a plurality of stator core pairs (101) formed by winding coil wires (104) connected by crossover wires (105) around each of a pair of stator cores. .

The holding portion is capable of holding the stator core pair on the reference circle (Cr1).

In this aspect, the plurality of stator core pairs can be moved from the radially outer side to the radially inner side of the reference circle, arranged on the reference circle, and held by the holding portion, and the stator cores can be assembled into an annular shape. . Therefore, when assembling the stator, it is not necessary to round the plurality of stator cores into an annular shape while detouring the wires using a wire detouring means as in the prior art (Patent Document 1), which puts stress on the wires. In addition, it is possible to suppress a decrease in assembly work efficiency. Thereby, it is possible to improve the efficiency of stator assembly while suppressing damage to the crossover wire.

(A) is a perspective view showing a stator core pair, and (B) is a perspective view showing a stator. FIG. 1 is a cross-sectional view showing an assembly device according to one embodiment. FIG. 1 is a cross-sectional view showing an assembly device according to one embodiment. FIG. 1 is a perspective view showing an assembly device according to one embodiment. FIG. 2 is a cross-sectional view showing an assembly device and a stator according to one embodiment. FIG. 2 is a diagram showing a stator assembly process according to an embodiment, in which (A) is a diagram showing a first stator core pair arranged on a reference circle, and (B) is a diagram showing a second stator core pair. FIG. 3 is a diagram showing a state in which core pairs are arranged on a reference circle. FIG. 3 is a diagram showing a stator assembly process according to an embodiment, in which (A) is a diagram showing a third stator core pair arranged on a reference circle, and (B) is a diagram showing a fourth stator core pair. FIG. 3 is a diagram showing a state in which core pairs are arranged on a reference circle. FIG. 6 is a diagram showing a stator assembly process according to an embodiment, in which (A) is a diagram showing a fifth stator core pair arranged on a reference circle, and (B) is a diagram showing a sixth stator core pair. FIG. 3 is a diagram showing a state in which core pairs are arranged on a reference circle. FIG. 6 is a diagram showing a stator assembly jig and a stator core pair according to a comparative embodiment. FIG. 4 is a diagram showing a stator assembly process according to a comparative embodiment, in which (A) is a diagram showing three stator core pairs arranged in an assembly jig, and (B) is a diagram showing a state in which three stator core pairs are arranged in an assembly jig. FIG. 3 is a diagram showing a state in which the connecting wires of three stator core pairs are moved inward in the radial direction. FIG. 6 is a diagram illustrating a stator assembly process according to a comparative embodiment, in which (A) is a diagram showing another three stator core pairs arranged in an assembly jig, and (B) is a diagram showing a state in which three other stator core pairs are arranged in an assembly jig. FIG. 7 is a diagram showing a state in which the connecting wires of three other arranged stator core pairs have been moved radially outward. FIG. 3 is a diagram for explaining a problem that may occur in the stator assembly process according to a comparative embodiment, and is a diagram showing how the crossover wire comes off from the end of winding of the coil wire.

Hereinafter, a method for assembling a stator and a device for assembling a stator according to an embodiment will be described based on the drawings.

(One embodiment)
A stator assembly apparatus according to one embodiment is shown in FIGS. 2-4.

The assembly device 1 is a device for assembling the stator 100. Here, the stator 100 is used, for example, as a stator of a three-phase brushless motor. The stator 100 has a plurality of stator cores 102 arranged annularly (see FIG. 1(B)). In this embodiment, stator 100 has twelve stator cores 102.

In the assembled state, the stator 100 has a plurality of stator core pairs 101 formed by winding a coil wire 104 connected by a crossover wire 105 around each of a pair of stator cores 102 (see FIG. 1). See B). In this embodiment, the stator 100 has six (six) stator core pairs 101.

As shown in FIG. 1(A), one stator core pair 101 includes a pair (two) of stator cores 102, two insulators 103, two coil wires 104, and one crossover wire. 105. The stator core 102 is formed of, for example, laminated steel plates and has a substantially T-shaped cross section. The insulator 103 is made of resin, for example, and is provided to cover a part of the stator core 102. The coil wire 104 is made of, for example, a conductive material in a linear shape, and is provided on the stator core 102 so as to be wound around the insulator 103 . The crossover wire 105 is formed in a linear shape from a conductive material, for example, and connects the winding end of one coil wire 104 of the pair of stator cores 102 and the winding start of the other coil wire 104 of the pair of stator cores 102. are doing. Here, the two coil wires 104 and the crossover wire 105 are integrally formed of one material.

In this embodiment, the stator 100 is assembled by arranging the stator core pair 101 shown in FIG. 1(A) in an annular shape (see FIG. 1(B)).

As shown in FIGS. 2 to 4, the assembly device 1 for the stator 100 includes a holding section 70, a rotation support section 80, a support column 81, and the like.

The holding portion 70 includes a holding portion main body 700, a magnet holding hole 701, a magnet 702, a fixing hole 703, a fixing member 704, a rough guide 705, a support portion 71, a support portion 72, and the like. The holding portion main body 700 is made of, for example, metal and has a substantially cylindrical shape. The magnet holding hole 701 is formed to connect the inner circumferential wall and the outer circumferential wall of the holding section main body 700. Twelve magnet holding holes 701 are formed at equal intervals in the circumferential direction of the holding section main body 700. The magnet 702 is formed in a substantially cylindrical shape and is provided to be inserted into the magnet holding hole 701. Twelve magnets 702 are provided, corresponding to the number of magnet holding holes 701. The fixing hole 703 extends from one end of the holding section main body 700 toward the other end in the axial direction, and is formed to intersect the magnet holding hole 701 substantially perpendicularly (see FIG. 3). Twelve fixing holes 703 are formed, corresponding to the number of magnet holding holes 701.

The fixing member 704 is inserted into the fixing hole 703. The fixing member 704 is provided so as to press the magnet 702 in the axial direction of the fixing hole 703. Thereby, relative movement of the magnet 702 in the axial direction with respect to the magnet holding hole 701 is restricted. The magnet 702 is provided in the magnet holding hole 701 with its relative position in the axial direction to the magnet holding hole 701 adjusted.

The rough guide 705 is formed to protrude outward in the radial direction of the holding part main body 700 between the magnet holding holes 701 in the outer peripheral wall of the holding part main body 700, and to extend from one end surface of the holding part main body 700 to the other end surface. There is. Twelve rough guides 705 are formed at equal intervals in the circumferential direction of the holding section main body 700.

The support base 71 has a support base body 710 and a support base protrusion 711 . The support base main body 710 is formed in a substantially annular shape. The support base protrusion 711 is formed to protrude outward in the radial direction of the support base main body 710 from the outer edge of the support base main body 710. Six support base protrusions 711 are formed at equal intervals in the circumferential direction of the support base main body 710.

The support base portion 72 has a support base body 720 and a support base protrusion 721 . The support base main body 720 is formed in a substantially annular shape. The support base protrusion 721 is formed to protrude from the outer edge of the support base main body 720 to the outside in the radial direction of the support base main body 720. Six support base protrusions 721 are formed at equal intervals in the circumferential direction of the support base main body 720.

The holding portion 70 and the support base portion 71 are fixed approximately coaxially with a fixing bolt 91 (see FIGS. 2 to 4). The support base part 71 and the support base part 72 are fixed substantially coaxially by fixing bolts 92 (see FIGS. 2 and 3).

The support column 81 is formed into a substantially cylindrical shape. The support column 81 can be fixed to the floor 2 by fixing a flange portion 811 formed at one end in the axial direction to the floor 2 with a fixing bolt 93.

The rotation support part 80 is, for example, a ball bearing. The rotation support section 80 has an inner ring 801, an outer ring 802, and balls 803. Inner ring 801 and outer ring 802 are formed into a substantially cylindrical shape. The balls 803 are provided so as to be able to roll between the inner ring 801 and the outer ring 802. The inner ring 801 and the outer ring 802 can smoothly rotate relative to each other in the circumferential direction while their relative movement in the axial direction is restricted by the balls 803.

The rotation support portion 80 is provided on the support column 81 by having an inner ring 801 locked to a stepped portion 812 at the other end of the support column 81 . As a result, the rotation support part 80 is directed to the support column 81, and the position in the axial direction (vertical direction) with respect to the support column 81 is defined.

The holding part 70 , the support part 71 , and the support part 72 are assembled together by the fixing bolts 91 and 92 , so that the inner edge of the support part main body 710 of the support part 71 is connected to the outer ring 802 of the rotation support part 80 . It is locked to. As a result, the holding portion 70, the support base portion 71, and the support base portion 72 are supported by the support column 81 via the rotation support portion 80 so as to be rotatable relative to the support column 81. In this way, the rotation support part 80 supports the holding part 70 rotatably in the circumferential direction.

A fixed plate part 82 is provided on the opposite side of the flange part 811 with respect to the inner ring 801 of the rotation support part 80 . The fixing plate part 82 is fixed to the end of the support column 81 on the opposite side from the flange part 811 with fixing bolts 94 so that the inner ring 801 is sandwiched between the fixation plate part 82 and the step part 812 of the support column 81 . As a result, the rotation support part 80, the holding part 70, the support base part 71, and the support base part 72 are prevented from coming off from the support column 81.

The support column 81 is provided with a plunger support portion 83 and a plunger 84 . The plunger support part 83 is provided on the radially outer side of the support column 81 so as to be located on the opposite side of the support base part 71 with respect to the support base part 72 . The plunger 84 is formed in a substantially cylindrical shape and is provided in the plunger support portion 83 so as to be movable relative to the plunger support portion 83 in the axial direction of the support column 81 . The tip of the plunger 84 can be fitted into a recess formed on the surface of the support pedestal 72 opposite to the support pedestal 71 . For example, a plurality of depressions are formed at equal intervals in the circumferential direction of the support base portion 72. By fitting the plunger 84 into the recess, the holding portion 70 can be positioned with respect to the support column 81 at predetermined angles.

<6> As shown in FIG. 5, the magnet 702 of the holding part 70 can attract the stator core 102 of the stator core pair 101. Thereby, the stator core 102 is held in a state where it is attracted to the outer circumferential wall of the holding section main body 700.

<4> The holding portion 70 is capable of holding the stator core 102 of the stator core pair 101 on the reference circle Cr1. Here, the reference circle Cr1 is a virtual circle whose center C1 is a point on the axis Ax1 of the holding section main body 700 of the holding section 70. The support base portion 71 of the holding portion 70 is capable of holding the stator core 102 of the stator core pair 101 from below in the vertical direction.

<5> The rotation support part 80 supports the holding part 70 rotatably in the circumferential direction of the reference circle Cr1.

The rough guides 705 are formed so as to be located on both sides of the stator core 102 in the circumferential direction of the holding section main body 700 in a state where the stator core 102 is attracted to the outer circumferential wall of the holding section main body 700. Thereby, displacement of the stator core 102 in the circumferential direction can be suppressed.

The outer diameter of the holding portion main body 700 is set larger than the inner diameter of the stator 100 after assembly. Therefore, the stator core 102 can be brought into reliable contact with the outer circumferential wall of the holding section main body 700, and the position of the stator core 102 when the stator 100 is assembled can be more stabilized.

Next, a method for assembling the stator 100 using the assembling device 1 will be explained based on FIGS. 6 to 8. In FIGS. 6 to 8, for convenience, the six stator core pairs 101 are referred to as stator core pairs 10, 20, 30, 40, 50, and 60, respectively. Further, one stator core 102 of the two stator cores 102 of the stator core pairs 10, 20, 30, 40, 50, 60 is set as stator core 11, 21, 31, 41, 51, 61, respectively, The other stator cores 102 are referred to as stator cores 12, 22, 32, 42, 52, and 62, respectively. Furthermore, the connecting wires 105 of the stator core pairs 10, 20, 30, 40, 50, and 60 are designated as connecting wires 17, 27, 37, 47, 57, and 67, respectively.

First, an operator moves the stator core pair 10 from the radially outer side to the radially inner side of the reference circle Cr1 to attract the stator core 11 and the stator core 12 to the outer peripheral wall of the holding section main body 700. and place it on the reference circle Cr1 (see FIG. 6(A)). Here, the stator core pair 10 is moved from the radial outside to the radial inside of the reference circle Cr1 so that the stator core 11 moves along the arrow d1 in the radial direction of the reference circle Cr1.

Thereafter, the operator rotates the holding part 70 together with the stator core pair 10 in one direction in the circumferential direction of the reference circle Cr1 (see FIGS. 6A and 6B).

Thereafter, the operator moves the stator core pair 20 from the radially outer side to the radially inner side of the reference circle Cr1 to attract the stator core 21 and the stator core 22 to the outer peripheral wall of the holding section main body 700. and place it on the reference circle Cr1 (see FIG. 6(B)). Here, the stator core pair 20 is moved from the radial outside to the radial inside of the reference circle Cr1 so that the stator core 21 moves along the arrow d2 in the radial direction of the reference circle Cr1.

More specifically, the stator core pair 20 is arranged at the diameter of the reference circle Cr1 so that the connecting wire 27 of the stator core pair 20 is located on the opposite side of the stator core 12 with respect to the connecting wire 17 of the stator core pair 10. It is moved from the outside in the direction toward the inside in the radial direction and placed on the reference circle Cr1 (see FIG. 6(B)).

Thereafter, the operator rotates the holding part 70 together with the stator core pair 10 and 20 in one direction in the circumferential direction of the reference circle Cr1 (see FIGS. 6(B) and 7(A)).

Thereafter, the operator moves the stator core pair 30 from the outside in the radial direction to the inside in the radial direction of the reference circle Cr1 to attract the stator core 31 and the stator core 32 to the outer circumferential wall of the holding section main body 700. and place it on the reference circle Cr1 (see FIG. 7(A)). Here, the stator core pair 30 is moved from the radial outside to the radial inside of the reference circle Cr1 so that the stator core 31 moves along the arrow d3 in the radial direction of the reference circle Cr1.

More specifically, the stator core pair 30 is arranged at the diameter of the reference circle Cr1 so that the connecting wire 37 of the stator core pair 30 is located on the opposite side of the stator core 22 with respect to the connecting wire 27 of the stator core pair 20. It is moved from the outside in the direction toward the inside in the radial direction and placed on the reference circle Cr1 (see FIG. 7(A)).

Thereafter, the operator rotates the holding part 70 together with the stator core pairs 10, 20, and 30 in one direction in the circumferential direction of the reference circle Cr1 (see FIGS. 7(A) and 7(B)).

Thereafter, the operator moves the stator core pair 40 from the radially outer side to the radially inner side of the reference circle Cr1 to attract the stator core 41 and the stator core 42 to the outer peripheral wall of the holding section main body 700. and place it on the reference circle Cr1 (see FIG. 7(B)). Here, the stator core pair 40 is moved from the radial outside to the radial inside of the reference circle Cr1 so that the stator core 41 moves along the arrow d4 in the radial direction of the reference circle Cr1.

More specifically, the stator core pair 40 is arranged at the diameter of the reference circle Cr1 so that the connecting wire 47 of the stator core pair 40 is located on the opposite side of the stator core 32 with respect to the connecting wire 37 of the stator core pair 30. It is moved from the outside in the direction toward the inside in the radial direction and placed on the reference circle Cr1 (see FIG. 7(B)).

Thereafter, the operator rotates the holding part 70 together with the stator core pairs 10, 20, 30, and 40 in one direction in the circumferential direction of the reference circle Cr1 (see FIGS. 7(B) and 8(A)).

Thereafter, the operator moves the stator core pair 50 from the radially outer side to the radially inner side of the reference circle Cr1 to attract the stator core 51 and the stator core 52 to the outer peripheral wall of the holding section main body 700. and place it on the reference circle Cr1 (see FIG. 8(A)). Here, the stator core pair 50 is moved from the radially outer side to the radially inner side of the reference circle Cr1 so that the stator core 51 moves along the arrow d5 in the radial direction of the reference circle Cr1.

More specifically, the stator core pair 50 is arranged at the diameter of the reference circle Cr1 so that the connecting wire 57 of the stator core pair 50 is located on the opposite side of the stator core 42 with respect to the connecting wire 47 of the stator core pair 40. It is moved from the outside in the direction toward the inside in the radial direction and placed on the reference circle Cr1 (see FIG. 8(A)).

Thereafter, the operator rotates the holding part 70 together with the stator core pairs 10, 20, 30, 40, and 50 in one direction in the circumferential direction of the reference circle Cr1 (see FIGS. 8(A) and 8(B)).

Thereafter, the operator moves the stator core pair 60 from the radially outer side to the radially inner side of the reference circle Cr1 to attract the stator core 61 and the stator core 62 to the outer peripheral wall of the holding section main body 700. and place it on the reference circle Cr1 (see FIG. 8(B)). Here, the stator core pair 60 is moved from the radial outside to the radial inside of the reference circle Cr1 so that the stator core 61 moves along the arrow d6 in the radial direction of the reference circle Cr1. Note that at this time, the stator core 62 is moved along the arrow d7 in the radial direction of the reference circle Cr1 and is attracted to the outer peripheral wall of the holding section main body 700.

More specifically, the connecting wire 67 of the stator core pair 60 is on the opposite side of the stator core 52 with respect to the connecting wire 57 of the stator core pair 50, and the connecting wire 67 of the stator core pair 10 is on the opposite side of the stator core 52, and The stator core pair 60 is moved from the radially outer side to the radially inner side of the reference circle Cr1 and placed on the reference circle Cr1 so as to be located on the opposite side from the core 11 (see FIG. 8(B)).

In this state, the connecting wire 27 is located on the opposite side of the connecting wire 17 from the stator cores 12 and 21. The connecting wire 37 is located on the opposite side of the connecting wire 27 from the stator cores 22 and 31. The connecting wire 47 is located on the opposite side of the connecting wire 37 from the stator cores 32 and 41. The connecting wire 57 is located on the opposite side of the connecting wire 47 from the stator cores 42 and 51. The crossover wire 67 is located on the opposite side of the crossover wire 57 from the stator cores 52, 61, and on the opposite side of the crossover wire 17 from the stator cores 62, 11 (see FIG. 8(B)). ).

Through the above steps, six stator core pairs 101, that is, twelve stator cores 102, can be arranged in an annular manner, and the stator 100 can be assembled, that is, manufactured.

In addition, in FIG. 5, the coil wires 104 hanging vertically downward from each stator core 102 are cut at unnecessary parts and electrically connected to each other by, for example, welding.

As described above, <1> The method for assembling a stator according to the present embodiment is a method for assembling the stator 100 having a plurality of stator cores 102 arranged annularly, and includes an assembling step.

In the assembly process, the plurality of stator core pairs 101 are moved from the radially outer side to the radially inner side of the reference circle Cr1 and placed on the reference circle Cr1, and the stator cores 102 are assembled into an annular shape.

In the <2> assembly process, one stator core pair 101 is moved from the radially outer side to the radially inner side of the reference circle Cr1 and placed on the reference circle Cr1, and then Then, another stator core pair 101 is moved from the radially outer side to the radially inner side of the reference circle Cr1 and placed on the reference circle Cr1.

In the <3> assembly process, one stator core pair 101 is moved from the radially outer side to the radially inner side of the reference circle Cr1 and placed on the reference circle Cr1, and then another stator core pair The other stator core pair 101 is moved from the outside in the radial direction of the reference circle Cr1 so that the connecting wire 105 of the first stator core pair 101 is located on the opposite side of the stator core 102 with respect to the connecting wire 105 of the first stator core pair 101. It is moved radially inward and placed on the reference circle Cr1.

Next, a method of assembling a stator according to a comparative embodiment will be explained.

In the comparative embodiment, the stator 100 is assembled using the assembly jig 3. The assembly jig 3 has a cylindrical portion 4, a bottom portion 5, and a cylindrical portion 6 (see FIG. 9). The cylindrical portion 4 is formed into a cylindrical shape. The bottom portion 5 is formed to close one end of the cylindrical portion 4. The cylindrical portion 6 is formed to protrude from the center of the bottom portion 5 in a cylindrical shape.

First, an operator places three stator core pairs 101, that is, stator core pairs 10, 20, and 30, in an annular space between the cylindrical portion 4 and the cylindrical portion 6 of the assembly jig 3. At this time, the stator core 12 and the stator core 21 are placed next to each other, the stator core 22 and the stator core 31 are placed next to each other, and the stator core 32 and the stator core 11 are placed next to each other, The stator core pairs 10, 20, and 30 are placed on the assembly jig 3 (see FIG. 10(A)).

Thereafter, the operator moves the crossover wires 17, 27, and 37 to the inside of the assembly jig 3 in the radial direction (see FIG. 10(B)).

Thereafter, the operator places the remaining three stator core pairs 101, that is, the stator core pairs 40, 50, and 60, in the annular space between the cylindrical part 4 and the cylindrical part 6 of the assembly jig 3. . At this time, stator core 62 and stator core 41 are placed next to each other between stator core 11 and stator core 12, and stator core 42 and stator core 51 are fixed next to each other. It is arranged between the child core 21 and the stator core 22, and the stator core 52 and the stator core 61 are arranged between the stator core 31 and the stator core 32 with the stator core 52 and the stator core 61 next to each other (Fig. 11(A) )reference).

Thereafter, the operator moves the crossover wires 17, 27, and 37 to the outside in the radial direction of the assembly jig 3 (see FIG. 11(D)).

Through the above steps, the assembly of the stator 100 is completed.

In the comparative embodiment, in the process of assembling the stator 100, the connecting wire 105 of the stator core pair 101 placed earlier exists in the moving direction of the stator core 102 of the stator core pair 101 placed later (Fig. 10 10(A)), it is necessary to move the connecting wire 105 of the stator core pair 101 arranged previously to the inside in the radial direction of the assembly jig 3 (see FIG. 10(B)). Furthermore, before the assembly is completed, it is necessary to move (return) the crossover wire 105, which has been moved radially inward of the assembly jig 3, radially outward (refer to FIG. 11(B)).

In the comparative embodiment, in the process of assembling the stator 100, when the worker moves the crossover wires 105 (17, 27, 37) inward in the radial direction of the assembly jig 3 (see FIG. 10(B)), the There is a risk that the wire 105 may come off the coil wire 104 at the beginning or end of the winding (see FIG. 12).

In addition, in the comparative embodiment, when the worker moves the crossing wire 105 (17, 27, 37) inward in the radial direction of the assembly jig 3 (see FIG. 10(B)), When moving outward in the radial direction (see FIG. 11(B)), stress is applied to the connecting wire 105, and there is a risk that the connecting wire 105 may be damaged.

On the other hand, in this embodiment, as shown in FIGS. 6 to 8, in the process of assembling the stator 100, the connecting wire 105 of the stator core pair 101 placed earlier is connected to the stator of the stator core pair 101 placed later. Since it does not exist in the moving direction of the core 102, there is no need to move the connecting wire 105 of the previously arranged stator core pair 101 in a predetermined direction as in the comparative embodiment. Therefore, there is no need to return the moved crossover wire 105 before the assembly is completed.

In this embodiment, in the assembling process of the stator 100, the transition wire 105 is moved radially inward of the assembling jig 3 (see FIG. 10(B)) as in the comparative embodiment, or Since the coil wire 105 is not moved outward in the direction (see FIG. 11(B)), the wire 105 may come off from the beginning or end of the coil wire 104, or the wire 105 may be damaged. You can prevent yourself from doing so.

As explained above, <1> the stator assembly method of the present embodiment includes an assembly step. In the assembly process, the plurality of stator core pairs 101 are moved from the radially outer side to the radially inner side of the reference circle Cr1 and placed on the reference circle Cr1, and the stator cores 102 are assembled into an annular shape. Therefore, when assembling the stator 100, it is necessary to roll the plurality of stator cores into an annular shape while detouring the connecting wire using a connecting wire detouring means, as in the conventional technology (Patent Document 1: Japanese Patent Laid-Open No. 2011-172430). Therefore, it is possible to suppress stress on the transfer wire 105 and a decrease in assembly work efficiency. Thereby, the efficiency of assembling the stator 100 can be improved while suppressing damage to the crossover wire 105.

<2> In the assembly process of the present embodiment, one stator core pair 101 is moved from the radially outer side to the radially inner side of the reference circle Cr1 and placed on the reference circle Cr1, and then Rotating in the circumferential direction of Cr1, another stator core pair 101 is moved from the radially outer side to the radially inner side of the reference circle Cr1 and placed on the reference circle Cr1.

Thereby, when arranging another stator core pair 101 on the reference circle Cr1, the operator does not need to move in the circumferential direction of the reference circle Cr1, and the efficiency of assembly can be further improved.

<3> In the assembly process of the present embodiment, one stator core pair 101 is moved from the radially outer side to the radially inner side of the reference circle Cr1 and placed on the reference circle Cr1, and then another The other stator core pair 101 is arranged around the reference circle Cr1 so that the crossover wire 105 of the stator core pair 101 is located on the opposite side of the stator core 102 with respect to the crossover wire 105 of the first stator core pair 101. It is moved from the outside in the radial direction toward the inside in the radial direction and placed on the reference circle Cr1.

Therefore, there is no need to move the crossover wire 105 to the inside or outside of the reference circle Cr1 in the radial direction during assembly as in the comparative embodiment, and the crossover wire 105 can be moved to the starting point or the end of the winding of the coil wire 104. It is possible to prevent the wire from falling out of place or damaging the crossover wire 105.

Moreover, <4> the stator assembly apparatus 1 of the present embodiment includes a holding section 70. The holding portion 70 is capable of holding the stator core pair 101 on the reference circle Cr1.

In the present embodiment, the plurality of stator core pairs 101 are moved from the radially outer side to the radially inner side of the reference circle Cr1, arranged on the reference circle Cr1, and held by the holding part 70, and the stator core pairs 102 are Can be assembled in a ring. Therefore, when assembling the stator 100, it is necessary to roll the plurality of stator cores into an annular shape while detouring the connecting wire using a connecting wire detouring means, as in the conventional technology (Patent Document 1: Japanese Patent Laid-Open No. 2011-172430). Therefore, it is possible to suppress stress on the transfer wire 105 and a decrease in assembly work efficiency. Thereby, the efficiency of assembling the stator 100 can be improved while suppressing damage to the crossover wire 105.

<5> The present embodiment further includes a rotation support part 80 that rotatably supports the holding part 70 in the circumferential direction of the reference circle Cr1. Therefore, when arranging the plurality of stator core pairs 101 on the reference circle Cr1, there is no need for the operator to move in the circumferential direction of the reference circle Cr1, and the efficiency of assembly can be further improved.

<6> In the present embodiment, the holding section 70 includes a magnet 702 that can attract the stator core pair 101. Therefore, when assembling the stator 100, the stator core pair 101 can be held by the holding portion 70 reliably and easily.

(Other embodiments)
In the embodiment described above, an example was shown in which a plurality of stator core pairs are arranged in order along the circumferential direction of the reference circle and assembled in an annular shape. On the other hand, in other embodiments, the plurality of stator core pairs are not arranged in order along the circumferential direction of the reference circle, but are arranged at arbitrary positions in the circumferential direction of the reference circle, and assembled in an annular shape. It's okay.

Also, in other embodiments, the assembly device may not include a rotational support.

Moreover, in other embodiments, the holding part does not need to have a magnet. In this case, the holding section can hold the stator core pair using the support base section 71.

Further, the present invention is not limited to a stator having six stator core pairs, but can also be applied to assembling a stator having seven or more or five or less stator core pairs.

As described above, the present disclosure is not limited to the embodiments described above, and can be implemented in various forms without departing from the gist thereof.

Reference Signs List 1 assembly device, 70 holding part, 100 stator, 101 stator core pair, 102 stator core, 104 coil wire, 105 transition wire, Cr1 reference circle

Claims (6)

A method for assembling a stator (100) having a plurality of annularly arranged stator cores (102), the method comprising:
In the assembled state, the stator includes a plurality of stator core pairs (101) formed by winding a coil wire (104) connected by a crossover wire (105) around each of the pair of stator cores. Has a set,
A stator comprising an assembling step of moving a plurality of stator core pairs from a radially outer side to a radially inner side of a reference circle (Cr1) and arranging them on the reference circle, and assembling the stator cores in an annular shape. How to assemble. In the assembling step, one of the stator core pairs is moved from a radially outer side to a radially inner side of the reference circle to be placed on the reference circle, and then rotated in a circumferential direction of the reference circle; 2. The method for assembling a stator according to claim 1, wherein another of the stator core pairs is moved from a radially outer side to a radially inner side of the reference circle and arranged on the reference circle. In the assembling step, one stator core pair is moved from a radially outer side to a radially inner side of the reference circle and placed on the reference circle, and then the other stator core pair is moved from the radially outer side to the radially inner side of the reference circle, and then the other stator core pair is The other stator core pair is moved from the radially outer side of the reference circle toward the radially inner side so that the line is located on the opposite side of the stator core with respect to the crossover line of the first stator core pair. The method for assembling a stator according to claim 1 or 2, wherein the stator is moved and placed on the reference circle. An assembly device for a stator (100) having a plurality of stator cores (102) arranged annularly,
In the assembled state, the stator includes a plurality of stator core pairs (101) formed by winding a coil wire (104) connected by a crossover wire (105) around each of the pair of stator cores. Has a set,
A stator assembly device comprising a holding part (70) capable of holding the stator core pair on a reference circle (Cr1). The stator assembly apparatus according to claim 4, further comprising a rotation support part (80) that rotatably supports the holding part in a circumferential direction of the reference circle. The stator assembly apparatus according to claim 4 or 5, wherein the holding section includes a magnet (702) capable of attracting the stator core pair.

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