JP2022018593A - Connection plate of stator of rotary electric machine, stator of rotary electric machine, rotary electric machine, manufacturing method of connection plate of stator of rotary electric machine, manufacturing method of stator of rotary electric machine, and manufacturing method of rotary electric machine - Google Patents

Abstract

To provide a connection plate of a stator of a rotary electric machine which can reduce the size of the rotary electric machine, a stator of a rotary electric machine, a rotary electric machine, a manufacturing method of a connection plate of a stator of a rotary electric machine, a manufacturing method of a stator of a rotary electric machine, and a manufacturing method of a rotary electric machine.SOLUTION: A connection plate 17 of a stator of a rotary electric machine includes a connection line 15 that connects terminal wires 12t of a plurality of coils 12 wound around a teeth portion 11b of a stator 10 of a rotary electric machine 100 includes a pedestal 17A divided into multiple parts in the circumferential direction Y, and a connecting portion 17B that connects the pedestals 17A adjacent to each other in the circumferential direction Y, and the pedestal 17A is provided with a plurality of guide grooves 17a for guiding the connection line 15 in parallel with the circumferential direction Y, and the position of the bottom 17ad of each of the guide grooves 17a in the axial direction Z is getting higher in order from the outside to the inside in the radial direction X.SELECTED DRAWING: Figure 11

Description

The present application relates to a method for manufacturing a connection plate for a stator of a rotary electric machine, a stator for a rotary electric machine, a rotary electric machine, a method for manufacturing a connection plate for a stator of a rotary electric machine, a method for manufacturing a stator of a rotary electric machine, and a method for manufacturing a rotary electric machine.

Conventionally, it is a method of manufacturing a rotary electric machine having a rotor and a stator, and a connection substrate in which an end portion of a winding of the stator is connected in a predetermined connection pattern. The connection substrate has a conductive conductor in a spiral shape. The first step of molding, the second step of covering at least a part of the surface of the spirally molded conductor with an insulating material, and the third step of dividing the conductor covered with the insulating material at a predetermined circumferential position. A method for manufacturing a rotary electric machine manufactured by a manufacturing process having the above has been proposed (see, for example, Patent Document 1).

In the method of manufacturing the connection plate of the stator of the rotary electric machine, the stator of the rotary electric machine, the rotary electric machine, the connection plate of the stator of the rotary electric machine, the method of manufacturing the stator of the rotary electric machine, and the method of manufacturing the stator of the rotary electric machine described in Patent Document 1, the conductor is used. After molding into a spiral shape and covering a part with an insulating material, the conductor is cut at a position in the circumferential direction. The conductor is provided with a through hole, and the winding end of the stator is inserted into the through hole and soldered to the conductor for connection.

Japanese Patent No. 5348199

In the spirally formed conductor described in Patent Document 1, the conductors are arranged on the same plane perpendicular to the axial direction of the stator. Therefore, in order to secure the insulation distance between the adjacent conductors, the coils are arranged in the radial direction. Since it is necessary to increase the size, there is a problem that the outer diameter of the rotary electric machine becomes large.

The present application discloses a technique for solving the above-mentioned problems, and is capable of reducing the outer diameter of the rotary electric machine and reducing the size of the rotary electric machine. It is an object of the present invention to provide a method for manufacturing a wire connection plate for an electric machine and a stator of a rotary electric machine, a method for manufacturing a stator for a rotary electric machine, and a method for manufacturing a rotary electric machine.

The connection plate of the stator of the rotary electric machine disclosed in the present application is
It is a connection plate of the stator of a rotary electric machine provided with a connection wire for connecting the terminal wires of a plurality of coils wound around the teeth portion of the stator of the rotary electric machine.
The pedestal part divided into multiple parts in the circumferential direction,
It is equipped with a connecting portion that connects the pedestals adjacent to each other in the circumferential direction.
The pedestal portion is provided with a plurality of guide grooves for guiding the connection line in parallel with the circumferential direction.
The axial position of the bottom of each guide groove is higher in order from the outer side to the inner side in the radial direction.
Further, the stator of the rotary electric machine disclosed in the present application is
A connection plate for the stator of the rotary electric machine is provided.
A plurality of coil windings having a split core divided in the circumferential direction, insulators mounted on both end faces in the axial direction of the split core, and the coil wound around the teeth portion of the split core via the insulator. Equipped with a body,
The insulator covers an outer flange portion that covers the axial end surface of the yoke portion of the split core, an inner flange portion that covers the axial end surface of the radial inner tip portion of the tooth portion, and an axial end surface of the tooth portion. Equipped with a tooth end face covering
The connection plate is positioned and arranged radially on the end surface of the inner flange and the radial inner edge of the axial end surface of the outer flange portion.
Further, the rotary electric machine disclosed in the present application is a rotary electric machine.
With the stator of the rotary electric machine,
The rotor is provided with a rotor rotatably supported so that the outer peripheral surface faces the inner peripheral surface of the stator.
Further, the method for manufacturing the connection plate of the stator of the rotary electric machine disclosed in the present application is described.
One conductor is placed in the outermost or innermost guide groove of all the pedestals.
Subsequently, a conductor arranging step of arranging the conductor in the guide grooves of all the pedestals adjacent to each other in the radial direction of the guide groove in which the conductor is already arranged,
It includes a cutting step of cutting one conductor between adjacent pedestals.
Further, the method for manufacturing a stator of a rotary electric machine disclosed in the present application is as follows.
A wiring plate arranging step of arranging the wiring plate on a plurality of the coil winding bodies arranged in an annular shape, and
A terminal line arranging step of arranging the terminal line above the connecting line to be welded in the axial direction,
The first electrode is inserted below the axial direction of the connecting wire to be welded.
The second electrode is lowered from above the terminal wire to be welded in the axial direction so as to sandwich the connecting wire and the terminal wire to be welded in the axial direction between the upper surface of the first electrode and the connecting wire to be welded. The terminal wire and the connecting wire are welded together.
Further, the method for manufacturing a rotary electric machine disclosed in the present application is as follows.
The rotor is rotatably arranged so that the outer peripheral surface of the rotor faces the inner peripheral surface of the stator.

According to the method of manufacturing the connection plate of the stator of the rotary electric machine, the stator of the rotary electric machine, the rotary electric machine, the connection plate of the stator of the rotary electric machine, the method of manufacturing the stator of the rotary electric machine, and the method of manufacturing the rotary electric machine disclosed in the present application. The outer diameter of the electric machine can be reduced and the rotary electric machine can be made smaller.

It is sectional drawing which shows the schematic structure of the rotary electric machine according to Embodiment 1. FIG. It is a perspective view of the split laminated core by Embodiment 1. FIG. It is a perspective view of the connection side insulator as an insulating member to be attached to the divided laminated core according to Embodiment 1. FIG. FIG. 5 is a plan view of a connection-side insulator as an insulating member to be mounted on the divided laminated core according to the first embodiment. FIG. 5 is a perspective view of an insulator on the anti-connection side as an insulating member mounted on the split laminated core according to the first embodiment. It is a perspective view of the coil winding body by Embodiment 1. FIG. It is a top view of the connection board by Embodiment 1. FIG. It is a side view of the connection board by Embodiment 1. FIG. It is a perspective view of the connection plate by Embodiment 1. FIG. It is a flowchart which shows the formation process of the connection line of the connection plate and the connection process of a connection plate and a coil by Embodiment 1. FIG. It is a top view which shows the state which the conductor is fixed on the pedestal part of the connection plate by Embodiment 1. FIG. It is a figure which shows the state which cut the conductor after being fixed to the pedestal part by Embodiment 1 and formed a plurality of connecting lines. It is a wiring diagram of the coil by Embodiment 1. FIG. FIG. 5 is a perspective view showing a state in which a plurality of coil winding bodies arranged in an annular shape according to the first embodiment are fitted to a frame. It is sectional drawing of the main part before welding of the connection plate and the coil winding body by Embodiment 1. FIG. It is a perspective view of the stator molded by Embodiment 1. FIG. It is a top view which shows the state which the conductor is fixed on the pedestal part of the connection plate by Embodiment 2. FIG. It is a figure which shows the state which cut the conductor after being fixed to the pedestal part by Embodiment 2 and formed a plurality of connecting lines. It is a wiring diagram of the coil according to Embodiment 2.

Embodiment 1.
Hereinafter, the method of manufacturing the connection plate of the stator of the rotary electric machine, the stator of the rotary electric machine, the rotary electric machine, the method of manufacturing the connection plate of the stator of the rotary electric machine, the method of manufacturing the stator of the rotary electric machine, and the method of manufacturing the rotary electric machine according to the first embodiment are shown. It will be explained using.
In the present specification, the terms "axial direction", "circumferential direction", "diametrical direction", "inner side", "outer side", "inner peripheral surface", and "outer peripheral surface" are used without particular notice, respectively. It means "axial direction", "circumferential direction", "diametrical direction", "inside", "outside", "inner peripheral surface", and "outer peripheral surface". In addition, when referring to "upper" and "lower" in this specification without particular notice, a plane perpendicular to the axial direction is assumed at a reference place, and the center point of the stator is included with that plane as a boundary. The side to be used is "bottom" and the opposite is "top". When comparing the heights, the one with the longer distance from the center of the stator is regarded as "higher". In the following description, the split laminated core will be used, but an integrated split core may be used.

FIG. 1 is a schematic cross-sectional view showing a schematic configuration of the rotary electric machine 100 according to the first embodiment.
FIG. 2 is a perspective view of the split laminated core 11 constituting the stator 10.
FIG. 3A is a perspective view of the connection side insulator 13 as an insulating member mounted on the divided laminated core 11.
FIG. 3B is a plan view of the connection side insulator 13 as an insulating member mounted on the divided laminated core 11.
FIG. 3C is a perspective view of the anti-connection side insulator 14 as an insulating member mounted on the divided laminated core 11.
FIG. 4 is a perspective view of the coil winding body 11A.

As shown in FIG. 1, the rotary electric machine 100 includes a stator 10, a rotor 30 rotatably supported with an outer peripheral surface facing the inner peripheral surface of the stator 10, and a frame 60 for accommodating the stator 10. The rotor 30 includes a plurality of permanent magnets. The stator 10 is a connection plate 17 (FIG. 4) that guides a plurality of coil winding bodies 11A (see FIG. 4) combined in an annular shape and a connection line 15 or the like that connects the terminal wires 12t of the coil 12 included in the coil winding body 11A to each other. 1), an anti-connection side bracket 50a and a connection side bracket 50b for holding the rotor 30, and a power connector 40 are provided. The plurality of coil winding bodies 11A combined in an annular shape are press-fitted or shrink-fitted into the frame 60. The "conductor W" used in the following description refers to a conductor before being cut into a plurality of connecting lines 15. That is, the conductor W cut into a plurality of pieces becomes the individual connecting line 15.

As shown in FIGS. 2 and 4, the coil winding body 11A includes a split laminated core 11, a connection side insulator 13 mounted on one end surface 11s1 on the connection side in the axial direction Z of the split laminated core 11, and a split laminated core. It includes an anti-connection side insulator 14 mounted on the other end surface 11s2 (the side without a connection portion) of the axial direction Z of 11, and a coil 12 wound around the divided laminated core 11.

The divided laminated core 11 is formed by laminating a plurality of iron core pieces 11p made of magnetic steel plates in the axial direction Z. The split laminated core 11 includes a yoke portion 11a extending in the circumferential direction Y of the stator 10, a teeth portion 11b protruding inward in the radial direction X from the inner peripheral surface of the yoke portion 11a, and an inner tip of the teeth portion 11b in the radial direction X. It is composed of shoe portions 11c protruding from the opposite side of the circumferential direction Y.

In the following description, when both the connection side insulator 13 and the anti-connection side insulator 14 are referred to, they are referred to as insulators 13 and 14.
As shown in FIGS. 3 and 4, the connection side insulator 13 and the anti-connection side insulator 14 are partially different in shape.

First, the configuration common to the insulators 13 and 14 will be described.
The insulators 13 and 14 include outer flange portions 13a and 14a, inner flange portions 13c and 14c, and tooth end face covering portions 13b and 14b.

The outer flange portions 13a and 14a cover the end surface 11as of the yoke portion 11a in the axial direction Z and project upward in the axial direction Z. The inner flange portions 13c and 14c cover the end surface 11 bins in the axial direction Z of the inner tip portion in the radial direction X of the teeth portion 11b and the end surface 11cs in the axial direction Z of the shoe portion 11c, and are above the axial direction Z. Protrude. The teeth end face covering portions 13b and 14b each cover the end faces 11bs of the teeth portion 11b in the axial direction Z.

The outer flange portion 13a of the wiring-side insulator 13 has a first projection 13p1 projecting upward in the axial direction Z at one end in the circumferential direction Y, and a first protrusion 13p1 projecting upward in the axial direction Z in the central portion of the circumferential direction Y. It is provided with two protrusions 13p2. A groove 13d for pulling out the terminal wire 12t of the coil 12 to the outside in the radial direction X is formed between the first protrusion 13p1 and the second protrusion 13p2.

The terminal wire 12t drawn out from the groove 13d to the outside in the radial direction X is bent toward the second protrusion 13p2 in the circumferential direction, and is on the end surface of the outer flange portion 13a in the axial direction Z and the diameter of the second protrusion 13p2. After being routed outside the direction X, it is bent upward in the axial direction Z.

As shown in FIGS. 3A and 3B, the heights of the outer flange portion 13a and the inner flange portion 13c in the axial direction Z are the same. Further, there is a space inside the radial direction X of the first protrusion 13p1 and the second protrusion 13p2 of the outer flange portion 13a. Therefore, the inner edge 13f of the end surface 13as of the outer flange portion 13a in the axial direction Z in the radial direction X is flush with each other in the circumferential direction Y. The outer peripheral surfaces are positioned by the first projection 13p1 and the second projection 13p2 on the end surface 13cs of the inner flange portion 13c in the axial direction Z and the above-mentioned edge 13f of the outer flange portion 13a, and the connection plate 17 described later is arranged. Will be done.

The coil 12 is wound around the teeth portion 11b of the divided laminated core 11 via the insulators 13 and 14. A sheet-shaped insulating member (not shown) is arranged between the side surface of the teeth portion 11b in the circumferential direction Y and the coil 12 to be wound.

FIG. 5A is a plan view of the connection plate 17.
FIG. 5B is a side view of the connection plate 17.
FIG. 5C is a perspective view of the connection plate 17.
The connection plate 17 connects the terminal wires 12t of the coil 12 wound around the coil winding body 11A to form a three-phase alternating current U, V, W phase coil group, and further connects these to the neutral point. It is used to guide a plurality of connection lines 15 to be connected to the power connector 40 and to further connect the connection line 15 to the connection line 16 to be connected to the power connector 40.

The connection plate 17 includes a pedestal portion 17A made of an insulator divided into a plurality of parts in the circumferential direction Y, a connecting portion 17B made of an insulator connecting the pedestal portions 17A adjacent to each other in the circumferential direction Y, and a plurality of connection lines 15. To prepare for. The connecting portion 17B connects the inner end portions of the adjacent pedestal portions 17A in the radial direction X and the upper end portions in the axial direction Z to each other.

In the upper end surface 17As of the pedestal portion 17A, the height in the axial direction Z of the inner portion in the radial direction X is set higher than the height in the axial direction Z of the outer portion in the radial direction X. The pedestal portion 17A is provided with a plurality of guide grooves 17a for guiding the plurality of connection lines 15 in parallel with the circumferential direction Y.

Therefore, the position of the bottom 17ad of each guide groove 17a in the axial direction Z has a structure in which the positions gradually increase from the outside to the inside in the radial direction X. Further, the position of the guide groove 17a of each pedestal portion 17A in the axial direction Z, which exists at the same radial direction X, is on the same plane perpendicular to the axial direction Z.

As shown in FIGS. 5A to 5C, a space R1 exists between adjacent pedestals 17A. This space R1 is used to cut the conductor W in the process of forming a U, V, W phase coil group of three-phase alternating current and further forming a plurality of connecting lines 15 connecting these to the neutral point. ..

As shown in FIGS. 5B and 5C, in the side view of the connection plate 17 viewed in the radial direction X, a space R2 penetrating in the radial direction X exists below the axial direction Z of the connecting portion 17B. The space R2 is used to insert the welding electrode from the inside of the stator 10 into the lower part of the connection plate 17 when the connecting wire 15 is welded.

Further, the outer peripheral surface 17Bout of the connecting portion 17B in the radial direction X is recessed inward in the radial direction X from the inner side surface 17ain of the guide groove 17a existing inside the most radial direction X of the pedestal portion 17A. This is a structure for preventing the electrode in contact with the connecting line 15 from above the axial direction Z from interfering with the connecting portion 17B when the connecting line 15 is welded.

A locking portion 17k is provided at the upper end portion of the inner wall of one pedestal portion 17A in the axial direction Z. The locking portion 17k is used to lock the winding start end portion S when a plurality of conductors W formed in a spiral shape in advance are arranged in a plurality of guide grooves 17a formed in the radial direction X. The guide groove 17a is not provided in the pedestal portion 17A provided with the locking portion 17k. Further, in the following description, the locking portion 17k is provided inside the radial direction X, but may be provided outside.

FIG. 6 is a flowchart showing a process of forming the connection line 15 and a process of connecting the connection plate 17 and the coil 12.
FIG. 7 is a plan view showing a state in which the conductor W is fixed on the pedestal portion 17A of the connection plate 17.
First, the winding start end portion S of one conductor W is fixed to the locking portion 17k. Here, when one conductor W formed in a spiral shape in advance is arranged on the tangent plate 17, the first lap portion from the inside of the conductor W having three laps is the adjacent pedestal portion 17A clockwise in the circumferential direction Y. Starting from, it is housed in the innermost guide groove 17a in the radial direction X in parallel with the circumferential direction Y (concentric with the stator 10). Of the conductor W, the first peripheral portion arranged in the innermost first peripheral guide groove 17a is arranged concentrically with respect to the axial center of the stator 10.

Since the guide groove 17a does not exist in the pedestal portion 17A provided with the locking portion 17k, the portion of the conductor W on the second lap of the conductor W changes its position in the radial direction X on the pedestal portion 17A. Then, similarly to the first lap portion, the second lap portion from the inside of the conductor W is the second guide groove from the inside in the radial direction X of all the pedestal portions 17A other than the pedestal portion 17A provided with the locking portion 17k. It is stored in 17a in parallel with the circumferential direction Y. Similarly, the third peripheral portion from the inside of the conductor W is housed in the guide groove 17a third from the inside in the radial direction X in parallel with the circumferential direction Y. Strictly speaking, the final third lap portion is arranged from the pedestal portion 17A where the locking portion 17k is present to the pedestal portion 17A two before (ST0011: conductor arrangement step).

In this way, after arranging one conductor W on the plurality of pedestal portions 17A, the adhesive 19 is applied to the pedestal portion 17A and the conductor W, and the conductor W is adhered and fixed to the pedestal portion 17A (ST002: Conductor fixing process).

FIG. 8 is a diagram showing a state in which the conductor W after being fixed to the pedestal portion 17A is cut to form a plurality of connecting lines 15.
FIG. 9 is a wiring diagram of the coil 12 according to the first embodiment.
FIG. 10 is a perspective view showing a state in which a plurality of coil winding bodies 11A arranged in an annular shape are fitted to the frame 60.

As shown in FIG. 9, in the present embodiment, the two coils 12 of each phase are connected in parallel and are connected in a three-phase Y connection. Therefore, in order to form a coil group of U, V, and W phases of three-phase alternating current, and further to form a plurality of connection lines 15 for connecting these to the neutral point, the conductor W is attached to the pedestal portion 17A as shown in FIG. After fixing, a punch die is inserted into the space R1 between the adjacent pedestals 17A of the connection plate 17, and the conductor W is punched from above the axial direction Z with the punch to cut (ST003: conductor cutting step). At this time, as shown in FIG. 8, the innermost first lap portion of the conductor W having three laps is cut clockwise from the locking portion 17k at a position of 15 ° 165 ° 345 °. In this way, all the cutting portions C are provided between the two pedestal portions 17A adjacent to each other in the circumferential direction Y.

Further, the second peripheral portion from the inside of the conductor W is cut at a position of 45 ° and 285 ° clockwise from the locking portion 17k. Similarly, the outermost third peripheral portion of the conductor W is cut clockwise from the locking portion 17k at a position of 135 ° and 315 °. After fixing the conductor W to the pedestal portion 17A, the coil group of U, V, and W phases is formed by cutting in this way, and a connection plate provided with a plurality of connection lines 15 for connecting these to the neutral point. Get 17.

Next, the completed connection plate 17 is arranged on a plurality of coil winding bodies 11A arranged in an annular shape (ST004: connection plate arrangement step). The connection plate 17 is arranged on the inner edge 13f of the inner flange portion 13c of the connection side insulator 13 in the axial direction Z and the end surface 13as of the outer flange portion 13a in the axial direction Z in the radial direction X.

The connection between the connection plate arrangement step, the connection wire 15 described below, and the terminal wire 12t of the coil 12 of the coil winding body 11A is such that the plurality of coil winding bodies 11A form a frame as shown in FIG. It is performed in a state of being fitted to 60.

FIG. 11 is a cross-sectional view of a main part of the connection plate 17 and the coil winding body 11A before welding.
Next, the coating film of the terminal wire 12t of each coil 12 is peeled off, the terminal wire 12t is routed along the outer peripheral surface of the second protrusion 13p2 of the connection side insulator 13 and bent upward in the axial direction Z, and further in the radial direction X. It is bent inward and placed on the peeled portion of the connecting wire 15 of the connecting plate 17. That is, as shown in FIG. 11, the terminal wire 12t is arranged above the axial direction Z of the connecting wire 15 to be welded by bending the tip inward in the radial direction X from the state of FIG. 10 (ST005). : Terminal line placement process). Similarly, the terminal wire 12t of all the coil winding bodies 11A is routed and arranged on the connecting wire 15 of the connecting plate 17.

Next, the first electrode 70in is inserted from the inside of the radial direction X through the space R2 described above and below the axial direction Z of the connection line 15 to be welded. Next, the connecting wire 15 and the terminal wire 12t to be welded are placed in the axial direction between the second electrode 70u from above the axial direction Z of the terminal wire 12t to be welded and the upper surface of the first electrode 70in. Both are welded by lowering them so as to be sandwiched between Z (ST006: connection step).

Similarly, after stripping the coating of the terminal of the connecting wire 16 for supplying current from the power connector 40 to the connecting wire 15 of the U, V, and W phases, the coating is placed on the stripped portion of the connecting wire 15. And weld. In this embodiment, welding is used, but a wiring member may be used and a jig may be inserted into the spaces R1 and R2 to connect the wiring.

FIG. 12 is a perspective view of the molded stator 10.
After all the terminal wires 12t are welded to the connecting wire 15 of the connecting plate 17, the stator 10 is molded with the insulating resin 90 to insulate each welded portion. By molding with an insulating resin, it is possible to prevent the welded portion from breaking due to vibration.

In the conventional wiring plate, since the spiral conductors are arranged on the same plane perpendicular to the axial direction Z, the upper end portion of the conductor is at the same height in the axial direction Z. Therefore, when the terminal wire of the coil of the stator is routed from the outside of the stator for welding, it interferes with the connecting wire other than the connecting wire to be welded, and welding cannot be performed.

On the other hand, according to the first embodiment, the method of manufacturing the connection plate of the stator of the rotary electric machine, the stator of the rotary electric machine, the rotary electric machine, the connection plate of the stator of the rotary electric machine, the method of manufacturing the stator of the rotary electric machine, and the method of manufacturing the rotary electric machine. For example, since the connecting wire 15 connecting the terminal wire 12t of the coil 12 has a higher height in the axial direction Z toward the inside of the radial direction X, when welding the connecting wire 15 and the terminal wire 12t of the coil 12 In addition, the first electrode 70in inserted from the inside of the stator 10 does not interfere with the other connecting wires 15, and both can be welded.

Further, as shown in FIG. 11, by arranging the conductor W by shifting it in the axial direction Z, the distance between the conductors W adjacent to each other in the radial direction X becomes large, and the conductor W is more than formed into a plane. Since the distance in the radial direction X can be shortened while ensuring a long insulation distance between Ws, the diameter of the stator 10 can be reduced, and the rotary electric machine 100 can be miniaturized.

Further, since the pedestal portion 17A and the connecting portion 17B can be formed by using the insulating resin, the degree of freedom in manufacturing and the transportability are high, and the efficiency of assembling the connection plate can be improved. The depth of the guide groove 17a of the pedestal portion 17A may be such that the conductor W can be stored without collapsing as shown in FIG.

Embodiment 2.
Hereinafter, the method of manufacturing the connection plate of the stator of the rotary electric machine, the stator of the rotary electric machine, the rotary electric machine, the method of manufacturing the connection plate of the stator of the rotary electric machine, the method of manufacturing the stator of the rotary electric machine, and the method of manufacturing the rotary electric machine according to the second embodiment are shown. The part different from the first embodiment will be mainly described.
FIG. 13 is a plan view showing a state in which the conductor W is fixed on the pedestal portion 217A of the connection plate 217.
FIG. 14 is a diagram showing a state in which the conductor W after being fixed to the pedestal portion 217A is cut to form a plurality of connecting lines 15.
FIG. 15 is a wiring diagram of the coil 12 according to the second embodiment.

The number of turns of the conductor W fixed to the pedestal portion 17A is different between the connection plate 17 of the first embodiment and the connection plate 217 of the present embodiment. That is, in the first embodiment, the conductor W is wound by about three turns, but in the second embodiment, the conductor W is wound by about four turns. Therefore, the number of guide grooves 217a formed in the pedestal portion 217A is also four.

In the present embodiment, the coating film of the portion connecting the connecting wire 15 forming the U, V, W phase coil group, the connecting wire 15 forming the neutral point, and the feeder line from the power supply is peeled off in the middle. ing. Similar to the first embodiment, one conductor W is arranged in four layers with different heights in the axial direction Z and different diameters in the radial direction X, and connects portions having different heights in the axial direction Z. Exists.

As shown in FIG. 13, the conductor W is arranged on the pedestal portion 217A, fixed by the adhesive 19, and then the conductor W is punched and cut with a die and a punch in the same manner as in the first embodiment. The innermost first lap portion of the conductor W having four laps is cut clockwise from the locking portion 17k at positions of 15 °, 135 °, 225, and ° 345 °.

Further, the second lap portion from the inside is cut at a position of 15 ° and 225 ° clockwise from the locking portion 17k. Similarly, the portion 3 weeks from the inside is cut clockwise from the locking portion 17k at a position of 135 ° and 345 °. Then, the outermost fourth lap portion is cut at a position of 15 ° clockwise from the locking portion 17k. Then, a coil group of U, V, and W phases is formed, and a connection plate 217 including a plurality of connection lines 15 for connecting these to the neutral point is obtained.

Next, the completed connection plate 217 is arranged on a plurality of coil winding bodies 11A arranged in an annular shape. The connection plate 217 is arranged on the inner edge 13f of the inner flange portion 13c of the connection side insulator 13 in the axial direction Z and the end surface 13as of the outer flange portion 13a in the axial direction Z in the radial direction X. Subsequent steps are the same as those in the first embodiment.

According to the second embodiment, the method of manufacturing the connection plate of the stator of the rotary electric machine, the stator of the rotary electric machine, the rotary electric machine, the connection plate of the stator of the rotary electric machine, the method of manufacturing the stator of the rotary electric machine, and the method of manufacturing the rotary electric machine. The same effect as that of the method for manufacturing the connection plate of the stator of the rotary electric machine, the stator of the rotary electric machine, the rotary electric machine, the connection plate of the stator of the rotary electric machine, the method of manufacturing the stator of the rotary electric machine, and the method of manufacturing the stator of the rotary electric machine of Form 1 is obtained. ..

Although the present application describes various exemplary embodiments and examples, the various features, embodiments, and functions described in one or more embodiments are applications of a particular embodiment. It is not limited to, but can be applied to embodiments alone or in various combinations.
Therefore, innumerable variations not exemplified are envisioned within the scope of the techniques disclosed in the present application. For example, it is assumed that at least one component is modified, added or omitted, and further, at least one component is extracted and combined with the components of other embodiments.

100 rotary electric machine, 10 stator, 11 split laminated core, 11a yoke part,
11A coil winding body, 11as end face, 11b teeth part, 11bins end face,
11bs end face, 11c shoe part, 11cs, 13cs, 13as end face,
11p iron core piece, 11s1 one end surface, 11s2 other end surface, 12 coils,
12t terminal line, 13 connection side insulator, 14 non-connection side insulator,
13a, 14a outer collar, 13b, 14b tooth end face covering,
13c, 14c inner collar, 13d groove, 13f edge, 13p1 first protrusion,
13p2 2nd protrusion, 15,16 connection line, 17,217 connection plate,
17a, 217a guide groove, 17A, 217A pedestal, 17ain inner side surface,
17As upper end surface, 17B connecting part, 17Bout outer peripheral surface, 17k locking part,
19 Adhesive, 30 Rotor, 40 Power Connector, 50a Anti-Connecting Bracket,
50b connection side bracket, 60 frame, 70in 1st electrode, 70u 2nd electrode,
90 Insulation resin, C cut part, R1, R2 space, S end part, W conductor, X radial direction,
Y circumferential direction, Z axis direction.

Claims (12)

It is a connection plate of the stator of a rotary electric machine provided with a connection wire for connecting the terminal wires of a plurality of coils wound around the teeth portion of the stator of the rotary electric machine.
The pedestal part divided into multiple parts in the circumferential direction,
It is equipped with a connecting portion that connects the pedestals adjacent to each other in the circumferential direction.
The pedestal portion is provided with a plurality of guide grooves for guiding the connection line in parallel with the circumferential direction.
The axial position of the bottom of each guide groove is the connection plate of the stator of the rotary electric machine, which increases in order from the outside to the inside in the radial direction. The connecting plate of the stator of the rotary electric machine according to claim 1, wherein the cutting portion of the connecting line is located between the adjacent pedestals. The connection plate of the stator of a rotary electric machine according to claim 1 or 2, wherein a space penetrating in the radial direction exists below the axial direction of the connecting portion when the connection plate is viewed in the radial direction. The connection plate for a stator of a rotary electric machine according to any one of claims 1 to 3, wherein the plurality of guide grooves are provided in the pedestal portion other than one pedestal portion. The rotation according to any one of claims 1 to 4, wherein the outer peripheral surface of the connecting portion is recessed radially inward from the inner side surface of the guide groove existing on the innermost side of the pedestal portion. Connection plate for the stator of the electric machine. The connection plate for a stator of a rotary electric machine according to any one of claims 1 to 5, wherein the connection wire is fixed to the pedestal portion with an adhesive. The connection plate of the stator of the rotary electric machine according to any one of claims 1 to 6 is provided.
A plurality of coil windings having a split core divided in the circumferential direction, insulators mounted on both end faces in the axial direction of the split core, and the coil wound around the teeth portion of the split core via the insulator. Equipped with a body,
The insulator covers an outer flange portion that covers the axial end surface of the yoke portion of the split core, an inner flange portion that covers the axial end surface of the radial inner tip portion of the tooth portion, and an axial end surface of the tooth portion. Equipped with a tooth end face covering
The connection plate is a stator of a rotary electric machine that is positioned and arranged radially on the end surface of the inner flange and the radial inner edge of the axial end surface of the outer flange portion. The stator of a rotary electric machine according to claim 7, wherein the coil winding body and the connection plate are molded with an insulating resin. The stator of the rotary electric machine according to claim 7 or 8,
A rotary electric machine provided with a rotor rotatably supported by facing the outer peripheral surface to the inner peripheral surface of the stator. The method for manufacturing a connection plate for a stator of a rotary electric machine according to any one of claims 1 to 6.
One conductor is placed in the outermost or innermost guide groove of all the pedestals.
Subsequently, a conductor arranging step of arranging the conductor in the guide grooves of all the pedestals adjacent to each other in the radial direction of the guide groove in which the conductor is already arranged,
A method for manufacturing a connection plate for a stator of a rotary electric machine, comprising a cutting step of cutting one conductor between adjacent pedestals. The method for manufacturing a rotary electric machine stator according to claim 7 or 8, wherein the connection plate for the rotary electric machine stator manufactured by using the method for manufacturing the connection plate for the rotary electric machine stator according to claim 10 is used. ,
A wiring plate arranging step of arranging the wiring plate on a plurality of the coil winding bodies arranged in an annular shape, and
A terminal line arranging step of arranging the terminal line above the connecting line to be welded in the axial direction,
The first electrode is inserted below the axial direction of the connecting wire to be welded.
The second electrode is lowered from above the terminal wire to be welded in the axial direction so as to sandwich the connecting wire and the terminal wire to be welded in the axial direction between the upper surface of the first electrode and the connecting wire to be welded. A method for manufacturing a stator of a rotary electric machine, comprising a connection step of welding the terminal wire and the connection wire. A method for manufacturing a rotary electric machine using a rotary electric machine stator manufactured by using the method for manufacturing a rotary electric machine stator according to claim 11.
A method for manufacturing a rotary electric machine in which the rotor is rotatably arranged so that the outer peripheral surface of the rotor faces the inner peripheral surface of the stator.

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