JP2016067177A - Stator of rotary electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stator of a rotary electric machine in which a separating jumper wire is hardly curled when storing the jumper wire.SOLUTION: A stator 100 of a rotary electric machine has: inner end part wire guides 35a1 and 35a2, which are erected above in a shaft direction and guide a separating jumper wire 41, disposed at both end parts in a circumferential direction of a first inner wall 35a; and an inner center wire guide 35a3, which is erected above in the shaft direction and guides the separating jumper wire 41, disposed at a center in the circumferential direction of the end surface in the shaft direction of the inner wall 35a. The inner end part wire guides 35a1 and 35a2 and the inner center wire guide 35a3 are provided with a first insulator 3a that is arranged so that innermost circumferential parts of the inner end part wire guides 35a1 and 35a2 are closer to outside in a radial direction than an outermost circumferential part of the inner center wire guide 35a3.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a stator of a rotating electric machine having a split iron core in which a connecting wire between a plurality of in-phase coils constituting a stator is continuously wound without being cut.

Many stator cores of rotating electrical machines are manufactured by punching and laminating thin plates with a press. The stator cores are divided into separate cores, and coils are wound around each split core via an insulator. Then, by integrating the divided iron cores by caulking or welding to form a stator, it is possible to increase the density of the coil and improve the productivity of the winding process.
In addition, a technique has been proposed in which the number of parts such as terminals and connection work are reduced by continuously winding the divided iron core without cutting the crossover. For example, when configuring a stator of a rotating electrical machine, an iron core divided in units of one tooth is arranged in an annular shape larger than the outer diameter of the stator in a circumferentially spaced state and wound around each tooth. A method of manufacturing a stator is proposed in which a crossover is provided on one end side in the axial direction of the insulator and a plurality of crossovers are arranged on the upper part of the coil, thereby preventing contact between the crossover and the coil ( For example, see Patent Document 1).
As a means for arranging the connecting wires and the coil in an insulated state, a method of arranging all the connecting wires in each of a plurality of grooves provided on the outer peripheral side of the insulator has been proposed (for example, Patent Document 2).

Japanese Patent No. 5290718 (paragraphs 0008, 0039 to 0043, FIGS. 3 and 5) Japanese Patent No. 4404199 (paragraphs 0025-0030, FIG. 6)

In the stator manufacturing method described in Patent Document 1, it is possible to reduce the number of connections by preventing the connection between the connecting wire and the coil without cutting the connecting wire, thereby reducing the number of connecting work steps and the number of parts. doing. However, according to this method, the crossover guide portion is disposed above the coil end in the axial direction, and it is necessary to perform winding so as to avoid the guide portion when winding the coil. There will be restrictions.
Further, since the process includes a step of reducing the diameter of the split core after winding, there is a problem that the connecting wire is loosened when the diameter is reduced, and the crossing wire holding holder must be designed in consideration of this slack. There has been a problem that the size is increased, and consequently the size of the stator is increased.

  By the way, in the manufacturing method of the stator of patent document 2, since the flyer of a winding machine can wind without interfering with other members, it can wind at high speed. Moreover, since it can connect without cutting a crossover, manufacturing cost can be held down. In this method, it is not necessary to reduce the diameter of the split core, and the structure is reduced in size, but all the connecting wires are arranged in each of a plurality of connecting wire storage grooves arranged in parallel on the outer peripheral side of the insulator. It has a structure. In this case, a certain amount of slack is required to facilitate the work of storing the crossover. Therefore, when molding the stator with resin, in order to prevent the connecting wires from coming into contact with each other even if the connecting wires are loosened by the molding pressure of the resin, or the connecting wires are loosened, Eventually, the flange portion of the insulator must be extended and the storage groove must be separated, and there is a problem that it is difficult to reduce the size of the insulator.

  The present invention has been made to solve the above-described problems, and in a stator of a rotating electric machine having a split iron core that is continuously wound without cutting the in-phase connecting wire, the separating connecting wire is provided. It is an object of the present invention to provide a stator for a rotating electrical machine in which a crossover wire is not easily wrinkled when stored.

The stator of the rotating electrical machine according to the present invention is:
A stator core in which a plurality of split cores each having a back yoke part and a teeth part protruding radially inward from the back yoke part are connected in an annular shape;
In a stator of a rotating electric machine having a separation wire that continuously connects a coil wound around the split iron core via an insulator to the coil of another non-adjacent split iron core,
The insulator includes a first outer wall erected axially upward from an inner peripheral side edge of the back yoke portion on one end surface in the axial direction of the divided core, and an axial direction of an inner peripheral tip portion of the tooth portion on the one end surface. A first inner wall erected in the same direction as the first outer wall from above the edge, and a first coil insulating portion connected to the first outer wall and the first inner wall and covering a predetermined range of the outer peripheral surface of the teeth portion A first insulator comprising: and
A second outer wall standing upright in the axial direction from the inner peripheral side edge of the back yoke portion on the other end surface in the axial direction of the divided iron core, and an inner portion of the tooth portion on the other end surface at the inner peripheral end of the tooth portion. A second inner wall erected in the same direction as the second outer wall from above an axial edge of the peripheral tip, and the first coil connected to the second outer wall and the second inner wall and on the outer periphery of the tooth portion A second insulator comprising a second coil insulating portion covering a range other than the range covered by the insulating portion,
At both ends in the circumferential direction of the axial end surface of the first inner wall, there are inner end wire guides that stand up in the axial direction and guide the separation crossover line,
In the center in the circumferential direction of the axial end surface of the first inner wall, there is an inner central wire guide that stands up in the axial direction and guides the separation jumper line,
The inner end wire guide and the inner central wire guide are arranged such that the innermost peripheral portion of the inner end wire guide is radially outer than the outermost peripheral portion of the inner central wire guide,
The spaced-apart connecting wire is disposed on the first outer wall or the first inner wall of the first insulator, and the adjacent connecting wire for continuously connecting the winding start line, the winding end line, and adjacent coils of the coil is The insulator is disposed on the second outer wall or the second inner wall of the insulator.

The stator of the rotating electrical machine according to the present invention is:
Since the inner end wire guide and the inner center wire guide are arranged so that the innermost peripheral portion of the inner end wire guide is radially outward from the outermost peripheral portion of the inner central wire guide. In this case, there is an effect that it is difficult for the crossover to become hazy when storing the separation crossover.

It is a perspective view which shows the structure of the stator of the rotary electric machine which concerns on Embodiment 1 of this invention. It is a partial cross-sectional top view, a cross-sectional view, and a partial cross-sectional enlarged view of the stator according to Embodiment 1 of the present invention. It is a schematic diagram which shows the electrical structure of the stator which concerns on Embodiment 1 of this invention. It is a perspective view of a pair of division | segmentation laminated | stacked iron core which comprises the stator core of the stator which concerns on Embodiment 1 of this invention. It is a top view which shows the state before bending between the division | segmentation laminated | stacked iron cores of a pair of division | segmentation laminated | stacked iron core which concerns on Embodiment 1 of this invention. It is a figure which shows the state which mounted | wore the insulator to a pair of division | segmentation laminated | stacked iron core shown in FIG. It is a perspective view, a top view, and a side detail view of the insulator according to Embodiment 1 of the present invention. It is the perspective view and top view of an insulator which concern on Embodiment 1 of this invention. It is a top view which shows the state immediately after winding of the one-phase division | segmentation stator group which concerns on Embodiment 1 of this invention. It is a perspective view which shows the state bent in order to assemble the 1-phase division | segmentation stator group just after the winding which concerns on Embodiment 1 of this invention as a stator. It is the top view which looked at the one-phase split stator group shown in FIG. 10 from the lower side, and the arrow D side. It is an expanded view which shows the wiring of the neutral point of the stator which concerns on Embodiment 1 of this invention. It is a top view which shows the state which has wound the coil to the winding part group of a U phase with the winding apparatus which concerns on Embodiment 1 of this invention. It is a top view which shows the state which the coil | winding of the coil to the winding part group of a U phase was completed by the winding apparatus which concerns on Embodiment 1 of this invention. It is a top view of the stator which concerns on Embodiment 2 of this invention. It is a perspective view of the division | segmentation laminated | stacked iron core which comprises the stator core of the stator which concerns on Embodiment 2 of this invention. It is a perspective view which shows the state which mounted | wore the same laminated insulator as Embodiment 1 with the division | segmentation laminated | stacked iron core shown in FIG. It is the top view and perspective view which show the state immediately after the winding of the one-phase division | segmentation stator group which concerns on Embodiment 2 of this invention. In Embodiment 3 of this invention, it is a perspective view which shows the state which integrally formed the insulator in a pair of division | segmentation laminated | stacked iron core shown in FIG.

Embodiment 1 FIG.
Hereinafter, the stator of the rotating electrical machine according to the first embodiment of the present invention will be described with reference to the drawings.
In this specification, the terms “axial direction”, “circumferential direction”, “radial direction”, “inner peripheral side”, “outer peripheral side”, “inner peripheral surface”, “outer peripheral surface”, unless otherwise specified, “Axial direction”, “circumferential direction”, “radial direction”, “inner peripheral side”, “outer peripheral side”, “inner peripheral surface”, “outer peripheral surface” of the stator. Also, in this specification, “up” and “down” are not particularly specified, and a plane perpendicular to the axial direction is assumed at a reference location, and the center point of the stator is included with that plane as a boundary. The lower side is “down” and the opposite is “up”. Further, when comparing the heights, the longer distance from the center of the stator is defined as “high”. Moreover, in the following description, although it demonstrates using a division | segmentation laminated | stacked iron core, you may use an integral-type division | segmentation iron core.
FIG. 1 is a perspective view showing the configuration of the stator 100.
FIG. 2A is a top view (including a partial cross-sectional view) of the stator 100. A circle E portion is a cross-sectional view of the stator 100 cut perpendicularly to the axial direction.
FIG. 2B is a cross-sectional view taken along line AA of the stator 100 in FIG.
FIG. 2C is an enlarged view of a portion surrounded by a circle E of the stator 100 of FIG.
FIG. 3 is a schematic diagram showing an electrical configuration of the stator 100.
FIG. 4 is a perspective view of a pair of split laminated cores 1 constituting the stator core 10 of the stator 100.

  The stator core 10 of the stator 100 includes two back yoke portions 2 shown in FIG. 4 (corresponding to an iron core single piece back yoke portion in claim 14) and teeth portions 3 projecting radially from the respective back yoke portions 2. Six pairs of split laminated cores 1 (corresponding to the split cores in claim 1) in which the core pieces 5 made of silicon steel sheets made of (corresponding to the core piece teeth portion in claim 14) are laminated, arranged in an annular shape, circumferential direction The abutment portion is connected and fixed by caulking or welding. In FIG. 1, the stator 100 looks like an ordinary stator having 12 divided laminated cores, but actually, the divided laminated cores 1 a and 1 b constituting the stator 100 are divided into two pieces. As a pair of divided laminated cores 1, respective outer peripheral ends are connected in advance.

  The electrical configuration of the stator 100 will be described with reference to FIGS. Subscripts U, V, and W in FIGS. 2 and 3 correspond to respective phases of the three-phase alternating current. The neutral point terminal 5N is a neutral point. Subscripts a and b attached to the coil 8 indicate that the winding directions of the coils are opposite to each other. In FIG. 1, the adjacent connecting wire 43 is arranged on the lower side and the invisible side in FIG. 2, the upper side in FIG. 1, and the separating connecting wires 41U to 41W on the visible side in FIG. 1, 2 and 3 are upside down.

  Teeth U1 (Here, U1 to U4 are used to distinguish and represent phases separately from the reference numerals as physical members. The same applies to V1 to V4, W1 to W4, and the like. Since the coils 8a and 8b are wound around the teeth U1 and the like, the actual teeth U1 and the like cannot be seen, but symbols are used to identify the locations of the individual teeth U1 and the like. The coil 8a wound in the same manner is connected to the neutral point terminal 5N via the winding start line 40U, and is wound around the coil 8a and the tooth U2 wound around the tooth U1. The coil 8 b is continuously connected by the adjacent crossover wire 43.

  Further, the coil 8b wound around the tooth U2 is connected to the coil 8b wound around the tooth U3 via the separation jumper 41U, and the coil 8b wound around the tooth U3 is connected by the adjacent jumper wire 43. It is connected to the coil 8a wound around the tooth U4 and connected to the input terminal 5U via a winding end line 45U.

  The coil 8a wound around the tooth V1 is connected to the neutral point terminal 5N via the winding start line 40V. The coil 8a wound around the tooth V1 and the coil 8b wound around the tooth V2 are Are connected by an adjacent crossover wire 43.

  Further, the coil 8b wound around the tooth V2 is connected to the coil 8b wound around the tooth V3 via the separation connecting wire 41V, and the coil 8b wound around the tooth V3 is connected by the adjacent connecting wire 43. It is connected to a coil 8a wound around a tooth V4, and is connected to an input terminal 5V via a winding end line 45V.

  The coil 8b wound around the tooth W1 is connected to the neutral point terminal 5N via the winding start line 40W. The coil 8b wound around the tooth W1 and the coil 8a wound around the tooth W2 are Are connected by an adjacent crossover wire 43.

  Further, the coil 8a wound around the tooth W2 is connected to the coil 8a wound around the tooth W3 via a separation jumper 41W, and the coil 8a wound around the tooth W3 is connected by the adjacent jumper wire 43. It is connected to the coil 8b wound around the tooth W4 and connected to the input terminal 5W via a winding end line 45W.

  The spaced-apart connecting wires 41U to 41W and the adjacent connecting wires 43 are arranged on the opposite sides of the stator 100 in the axial direction, with the split laminated iron cores 1a and 1b interposed therebetween via insulating insulators, The input terminals 5U to 5W having the highest potential difference are arranged on the adjacent crossover 43 side where there is no possibility of interference.

  Further, in FIG. 3, the neutral point terminal 5N is disposed in the vicinity of the W-phase winding start line 40W. However, the winding start lines 40U, 40V, and 40W may be electrically connected. May be arranged at any of the teeth U1, U2, V1, V2, W1, and W2 that are not likely to interfere with the input terminals 5U, 5V, and 5W.

As shown in FIG. 4, the pair of divided laminated cores 1 includes two divided laminated cores 1a and 1b.
FIG. 5 is a top view showing a state of the pair of divided laminated cores 1 before being bent between the divided laminated cores 1a and 1b. A pair of split laminated iron cores 1 shown in FIG. 4 are bent from the state of FIG.

  The divided laminated iron cores 1a and 1b are laminated tooth portions 12a and 12b that protrude inward from the laminated back yoke portions 11a and 11b and the laminated back yoke portions 11a and 11b (corresponding to the back yoke portion in claim 1), respectively. Equivalent to the teeth part). The divided laminated iron cores 1a and 1b are thin-walled so that the end portions 11at and 11bt in the circumferential direction of the laminated back yoke portions 11a and 11b can be bent with the axis Q shown in FIG. Here, in order to make the structure bendable, the connecting portions 13 of the laminated back yoke portions 11a and 11b are thin-walled connected, but the invention is not limited to this. For example, lamination using caulking unevenness provided in the laminating direction is used. The back yoke portions 11a and 11b may be configured to be rotatable with hinge connection.

  Dovetail grooves 11a1 and 11b1 for attaching the divided laminated iron cores 1a and 1b to a chuck mechanism, which will be described later, are provided at the center portions on the outer peripheral side of the laminated back yoke portions 11a and 11b. The dovetail grooves 11a1 and 11b1 extend in the axial direction from the upper end portion to the lower end portion of the laminated back yoke portions 11a and 11b.

  6 is a view showing a state in which the first insulator 3a and the second insulator 3b are mounted on the divided laminated cores 1a and 1b of the pair of divided laminated cores 1 shown in FIG. For convenience of the following description, FIG. 6 is drawn with the top and bottom reversed compared to the state of FIG. As shown in FIG. 6, the divided laminated iron cores 1a and 1b are equipped with a first insulator 3a and a second insulator 3b which are divided into two perpendicular to the axial direction.

For example, in the case of the U phase, a pair of divided laminated iron cores 1 (divided laminated iron cores 1a and 1b) are used as two sets of one set of U-phase winding part groups 1U by a winding process described later. A coil 8 is continuously wound around 1a and 1b to form a U-phase divided stator group 10U for one phase.
As shown in FIG. 2A, the wound U-phase split stator group 10U includes two teeth U1 and U2 and two teeth U3 and U4 with the center point 0 sandwiched between them. The remaining V-phase split stator group 10V and W-phase split stator group 10W are annularly shifted from the U-phase split stator group 10U by 60 ° on the opposite sides in the circumferential direction. Be placed.

  Contact between the laminated back yoke portions 11a and 11b of the divided laminated cores 1a and 1b constituting the U-phase divided stator group 10U, the V-phase divided stator group 10V, and the W-phase divided stator group 10W arranged in an annular shape. The stators 100 of the 10-pole 12-tooth three-phase DC brushless motor are configured by integrating the parts by welding or adhesion.

Next, the structure of the 1st insulator 3a and the 2nd insulator 3b is demonstrated using FIGS. 7-8.
7A is a perspective view of the first insulator 3a, FIG. 7B is a top view of the first insulator 3a, and FIG. 7C is a first insulator viewed from the direction of arrow B in FIG. 7B. It is side surface detail drawing of 3a.
FIG. 8A is a perspective view of the second insulator 3b, and FIG. 8B is a top view of the second insulator 3b. FIG. 7B is a cross-sectional view in which a part of the inner end wire guide 35a2 is cut away.
A first insulator 3a and a second insulator 3b are mounted on the split laminated iron cores 1a and 1b from both sides in order to ensure insulation between the divided cores 1a and 1b.

  The first insulator 3a includes a first coil insulating portion 36a having a shape covering a predetermined range of the laminated tooth portions 12a and 12b, and an axial edge on the inner circumferential tip of the laminated tooth portions 12a and 12b. Similar to the shape in which the tip is extended in the axial direction as it is, the first inner wall 35a whose upper end surface 35au is perpendicular to the axial direction and the edge on the inner peripheral side of the laminated back yoke portions 11a, 11b are raised upward in the axial direction. The first outer wall 34a is provided.

  Inner end wire guides 35a1 as inner wire guides that rise in the axial direction from the inner peripheral side of the upper end surface 35au, at both ends in the axial direction of the upper end surface 35au in the axial direction of the first inner wall 35a of the first insulator 3a, 35a2. The inner end wire guides 35a1 and 35a2 have a hook shape (out-of-plane restriction shape) in which the upper end portion in the axial direction protrudes toward the inner peripheral side. Further, between the two inner end wire guides 35a1 and 35a2, an inner central wire as an inner wire guide that rises in the axial direction to approximately the same height as the inner end wire guides 35a1 and 35a2 and extends in the circumferential direction. A guide 35a3 is provided.

The distance R1 between the innermost peripheral portion 35a21 below the flange-shaped portion of the inner end wire guide 35a2 and the stator center O is the distance A between the outermost peripheral portion 35a31 of the inner central wire guide 35a3 and the stator center O. The distance R2 between the innermost peripheral portion 35a22 of the flange-shaped portion of the inner end wire guide 35a2 and the stator center O is longer than the distance A between the outermost peripheral portion 35a31 of the inner central wire guide 35a3 and the stator center O. It has a shorter dimension. The same applies to the inner end wire guide 35a1.

  Further, between the inner end wire guide 35a1 and the inner central wire guide 35a3 and between the inner end wire guide 35a2 and the inner central wire guide 35a3, there are inner wall wire paths Ma1 and Ma2 that pass through the upper end surface 35au in the radial direction. It is formed. In the above description, the two inner end wire guides 35a1 and 35a2 and the one inner center wire guide 35a3 are provided on the inner peripheral side. You may arrange more than one.

  The lowermost portion of the inner wall wire paths Ma1 and Ma2, that is, the position of the upper end surface 35au, is obtained by winding the coil 8 around the divided laminated cores 1a and 1b via the first insulator 3a and the second insulator 3b as shown in FIG. The position is higher than the position of the coil end on the inner wall side. Further, among the connecting wires between the coils 8 and 8, the separating connecting wire 41 that connects the coils 8 that are not adjacent to each other passes through the lowermost part of the inner wall wire paths Ma1 and Ma2, and the inner end wire guides 35a1 and 35a2. The inner center wire guide 35a3 is wound around the upper end surface 35au along the root thereof.

  On the other hand, as shown in FIG. 7A, the first outer wall 34a of the first insulator 3a is pivoted from a position substantially the same as or lower than the height of the axial end of the first coil insulating portion 36a. Slit-like first outer wall wire paths Ma3 and Ma4 extending in the direction and extending in the radial direction are provided. The first outer wall wire paths Ma3 and Ma4 communicate with each other from the outer peripheral side of the first outer wall 34a toward the circumferential end surface of the first coil insulating portion 36a. This is a configuration aimed at preventing the wire of the first turn from interfering with the wire that is later wound on the upper layer when the coil 8 is wound. As shown in FIG. 7B, chamfered portions 36a1 and 36a2 are provided at the boundary between the axial end surface and the radial end surface of the first coil insulating portion 36a. Then, first turn guide grooves 33a1 and 33a2 extending along the boundary are provided at the boundary between the first outer wall 34a radially inside the first outer wall wire paths Ma3 and Ma4 and the chamfered portions 36a1 and 36a2. It has been.

  The first turn guide grooves 33a1 and 33a2 suppress the frictional force generated between the first turn of the coil 8 connected to the separation connecting wire 41 wired by the winding device 50 described later and the first outer wall 34a. In this configuration, the distance crossover wire 41 is arranged so as not to obstruct the coil 8 to be wound later. Further, the first outer wall 34a of the first insulator 3a has two outer end wire guides 31a1 and 31a2 as outer wire guides for preventing contact between the separating jumpers 41 and one outer wire guide. An outer central wire guide 31a3 is provided. The outer end wire guides 31a1 and 31a2 provided at both ends of the outer circumferential surface on the outer side in the circumferential direction from the first outer wall wire paths Ma3 and Ma4 have a bowl shape with the upper part in the axial direction opened. The outer central wire guide 31a3 is provided at the upper end of the outer peripheral surface of the first central portion 34a3 of the first outer wall 34a sandwiched between the first outer wall wire paths Ma3 and Ma4, and has a tapered shape facing upward. A first outer wall central wire path Ma5 that is adjacent to the outer central wire guide 31a3 and extends in the radial direction is provided at the center of the upper end in the axial direction of the first central portion 34a3. The first outer wall central wire path Ma5 is deep enough to hook a wire.

  The lower surface 31a31 of the outer central wire guide 31a3 is disposed at a position that is higher than the bottom surfaces 31a11 and 31a21 of the flange-shaped portions (out-of-plane regulating shapes) of the outer end wire guides 31a1 and 31a2 by about the wire diameter to be used. Further, since the outer central wire guide 31a3 has a taper shape, it is difficult to be caught on the upper portion of the outer central wire guide 31a3 when the separation connecting wire 41 is disposed on the outer end wire guides 31a1 and 31a2, thereby ensuring workability. it can. The outer end wire guides 31a1 and 31a2 serve to prevent the contact wires 41 of different phases from coming into contact with each other. In addition, the wire connection wires 41 are separated from the outer peripheral surface of the stator 100 radially outward. To prevent. The outer end wire guides 31 a 1 and 31 a 2 are not limited to the hook shape, but can be hooked with the separation jumper wire 41 in the axial direction, and can be regulated out of the plane so that the separation jumper wire 41 is not separated from the outer peripheral surface of the stator 100. I just need it.

  Further, the roles of the outer end wire guides 31a1 and 31a2 and the outer central wire guide 31a3 are exchanged, and only the lower surface of the outer central wire guide 31a3 is formed into a bowl shape. Furthermore, on the outer periphery of the laminated back yoke portions 11a and 11b, the base of the first outer wall 34a, that is, the outer side at the same height as the lowest part of the first outer wall wire paths Ma3 and Ma4 is covered. A first stage portion 37a extending in the circumferential direction is provided, and the separated crossover iron cores 1a, 1b and the separation crossover wire 41V are brought into contact with each other by drawing the separation crossover wire 41V along the upper surface of the first stage portion 37a. Can be avoided. Further, a separation jumper 38a extending in the axial direction is provided on the outer peripheral side of the first stage portion 37a, and the separation jumping line 41V is separated from the outer peripheral surface of the stator 100 radially outward. It is preventing. The spacing jumper regulating protrusion 38 a is not limited to this shape, but can have a shape capable of hooking the spacing jumper line 41 </ b> V in the axial direction and restricting the spacing jumper line 41 </ b> V out of the outer surface of the stator 100. What is necessary is just to provide two or more as needed.

  The second insulator 3b is configured such that the inner peripheral side tip portion is left as it is from the second coil insulating portion 36b having a shape covering the laminated tooth portions 12a and 12b and the axial edge of the inner circumferential tip portion of the laminated teeth portions 12a and 12b. It is composed of a second inner wall 35b similar to the shape extended in the axial direction and a second outer wall 34b erected upward in the axial direction from the inner peripheral edge of the laminated back yoke portions 11a, 11b. The major difference between the first insulator 3a and the second insulator 3b is that the first insulator 3a has an upper end surface 35au on the first inner wall 35a and includes inner end wire guides 35a1 and 35a2 and an inner central wire guide 35a3. In contrast, the upper end portion in the axial direction of the second inner wall 35b of the second insulator 3b has a narrow radial width, and the inner end wire guide and the inner central wire guide are not provided. The boundary portion in the axial direction between the first insulator 3a and the second insulator 3b does not have to be exactly half the axial direction of the divided laminated cores 1a and 1b. What is necessary is just to insulate the division | segmentation laminated | stacked iron cores 1a and 1b combining both the 1st insulator 3a and the 2nd insulator 3b.

  The second outer wall 34b of the second insulator 3b is provided with slit-shaped second outer wall wire paths Mb3 and Mb4 in the radial direction, and the circumferential end surfaces of the second coil insulating portion 36b from the outer peripheral side of the second outer wall 34b, respectively. Communicating towards The lowermost portions of the second outer wall wire paths Mb3 and Mb4 are at a position equal to or lower than the upper end surface of the second coil insulating portion 36b. Similar to the first insulator 3a, this is intended to prevent the wire of the first turn from interfering with the wire wound later during winding.

  Further, at the boundary between the second outer wall 34b and the chamfered portions 36b1 and 36b2 of the second coil insulating portion 36b, as shown in FIG. 8B, a first turn guide groove 33b1 extending along the boundary. , 33b2 are provided. Like the first insulator 3a, this suppresses the frictional force generated between the first turn of the coil 8 connected to the adjacent crossover wire 43 wired by the winding device 50 described later and the second outer wall 34b. In addition to fulfilling the role of suppressing variations in length, the configuration is aimed at preventing the adjacent crossover wire 43 from interfering with the coil 8 wound later. The first turn guide groove may be provided only in either the first insulator 3a or the second insulator 3b.

  A terminal insertion hole 39b for press-fitting and fixing the neutral point terminal 5N and the input terminals 5U to 5W is provided at the upper end of the second outer wall 34b. On the outer peripheral surface of the second central portion 34b3 of the second outer wall 34b sandwiched between the second outer wall wire paths Mb3 and Mb4, an interference preventing protrusion 31b protruding outward is provided, and on the upper end surface of the second central portion 34b3. A wire guide groove Mb5 having a groove shape dug in the circumferential direction is provided.

  The height of the upper end surface of the second central portion 34b3 of the second outer wall 34b is higher than the height of the upper end surfaces on both sides in the circumferential direction with the second outer wall wire paths Mb3 and Mb4 interposed therebetween. The interference prevention protrusion 31b and the wire guide groove Mb5 serve to prevent contact between a winding start wire 40 of the coil 8 and an adjacent crossover wire 43, which will be described later.

  In addition, on the outer side of the base of the second outer wall 34b of the second insulator 3b, that is, at the same height as the lowermost part of the second outer wall wire paths Mb3 and Mb4, the laminated back yoke portion 11a is formed similarly to the first insulator 3a. , 11b is provided with a second stage portion 37b extending in the circumferential direction so as to cover the edge on the outer peripheral side of the outer peripheral side of 11b, and contact between the adjacent crossover wire 43 and the divided laminated cores 1a, 1b can be avoided. One or both of the regions on both sides in the circumferential direction of the upper end portion of the second outer wall 34b of the second insulator 3b are provided with terminal wire hooks 32b protruding in the outer circumferential direction. The terminal line hook 32b serves to restrict the terminal line from being detached from the second insulator 3b when hooking a winding end terminal line to be described later.

Next, the arrangement of the separation connecting wires 41U to 41W of the stator 100 will be described with reference to FIGS.
FIG. 9 is a top view showing a state immediately after the winding of the one-phase split stator group 10X (X indicates any one of U, V, and W).
FIG. 10 is a perspective view showing a state in which the one-phase divided stator group 10X immediately after winding is folded to assemble as a stator.
FIG. 11A is a plan view of the one-phase split stator group 10X shown in FIG. 10 as viewed from below.
FIG. 11B is a front view of the one-phase split stator group 10X shown in FIG. 10 as viewed from the arrow D side in FIG.

Since the difference between the U, V, and W phase divided stator groups in the state where the winding is finished is the length of the separation jumper wire and the winding direction of each coil 8, FIG. 9 to FIG. It is a common drawing of the phases.
The stator 100 is assembled by first integrating the U-phase split stator group 10U, the V-phase split stator group 10V, and the W-phase split stator group 10W that have finished winding, and then the V-phase split stator group. A 10V separation wire 41V is wound around the laminated back yoke portions 11a and 11b of the other-phase divided stator group sandwiched between the first stage portion 37a and the first stage portion 37a provided on the first outer wall 34a of the first insulator 3a. It arrange | positions between outer side edge part wire guides 31a1 and 31a2 (it may be on the 1st stage part 37a).

  Next, as shown in FIG. 1, the separation jumper 41W of the W-phase divided stator group 10W is wound around the laminated back yoke portions 11a and 11b of the other-phase divided stator group sandwiched therebetween, to thereby form the first insulator. The outer end wire guide 31a1 and the outer end wire guide 31a2 provided on the first outer wall 34a of 3a are disposed between the outer center wire guide 31a3.

  Finally, the separation connecting wire 41U of the U-phase split stator group 10U is wound around the inner periphery of the stator 100. As shown in FIG. 2A, the separation connecting wire 41U is first hooked and passed through the first outer wall central wire path Ma5 of the first insulator 3a of the tooth U3, and then passes through the inner wall wire path Ma2 to pass through the stator 100. The inner central wire guide on the upper end surface 35au passes through the inner peripheral side of the inner end wire guides 35a2 and 35a1 and passes through the inner wall wire path Ma1 of the first insulator 3a of the adjacent tooth W4. The root part of 35a3 is passed along the outer periphery. And it comes out to the inner peripheral side of the stator 100 again from the inner wall wire path | route Ma2 of the 1st insulator 3a of the teeth W4. In this manner, the separation connecting wire 41U alternately passes through the inner peripheral side of the inner end wire guides 35a1 and 35a2 and the outer peripheral side of the inner central wire guide 35a3. Thereafter, the inner wall wire path Ma1 of the tooth U2 is connected to the coil 8b of the tooth U2.

  Here, as described above, the positions of the innermost peripheral portions 35a11 and 35a21 below the flange-shaped portions of the inner end wire guides 35a1 and 35a2 are radially outward from the outermost peripheral portion 35a31 of the inner central wire guide 35a3. Therefore, the bend radii Ra3 and Ra4 (see FIG. 2b) of the separation connecting wire after the separation connecting wire 41 is accommodated are prevented from being reduced, and the separation connecting wire 41U has a smooth trajectory.

  Thereby, it is difficult for the crossover line to become hazy when storing the separation crossover line 41U, and workability can be improved and variation in the crossover line shape can be suppressed. In addition, since the inner end wire guides 35a1 and 35a2 have a hook-shaped portion at the upper end in the axial direction, even when receiving an external force such as a molding pressure after the connecting wire is stored, the separated connecting wire 41U is regulated. Can stay within range. In the above description, the separation connecting wire 41U is alternately passed through the inner peripheral side of the inner end wire guides 35a1 and 35a2 and the outer peripheral side of the inner central wire guide 35a3 from the teeth U3 to the teeth U2. It is not necessary to pass the outer peripheral side of the inner central wire guide 35a3. For example, in FIG. 2, the teeth W3 and the teeth V4 may be configured not to pass the outer peripheral side of the inner central wire guide 35a3, and the teeth W4 and the teeth V3 may be omitted. It is good also as a structure which does not let the outer peripheral side of the inner side center wire guide 35a3 pass.

Next, the arrangement of the neutral point terminal 5N and the winding start line 40 will be described with reference to FIG. 2, FIG. 3, FIG. 8, and FIG.
FIG. 12 is a development view showing the wiring of the neutral point of the stator 100, and is a development view of the stator 100 as viewed from the outside in the radial direction. It is the figure which expanded only the range of V1-U2. Note that the side visible in FIG. 2 is the lower side in FIG.

  As described above, after the U-phase split stator group 10U, the V-phase split stator group 10V, and the W-phase split stator group 10W are integrated, the terminal insertion hole 39b provided in the second insulator 3b is neutralized. A point terminal 5N and input terminals 5U, 5V, and 5W (not shown) are inserted. Next, the W-phase winding start wire 40W extending from the coil 8b of the tooth W1 is connected to the neutral point terminal 5N. Next, the V-phase winding start wire 40V coming out of the coil 8a of the tooth V1 is passed through the wire guide groove Mb5 of the second insulator 3b in the order of the teeth V1, V2, and is connected to the neutral point terminal 5N. Finally, the U-phase winding start wire 40U coming out of the tooth U1 is passed under the terminal wire hook 32b of the tooth W2, and the teeth W2 and W1 are passed through the wire guide groove Mb5 in this order to connect to the neutral point terminal 5N. To do.

  Here, in FIG. 12, when the coil 8a is wound around the tooth V1 in the clockwise direction toward the paper surface, the winding start line 40V is set to the second outer wall wire so that the wire of the first turn does not interfere with the wire wound later. It is connected to the coil 8a through the path Mb3. At this time, the interference preventing protrusion 31b serves to prevent the adjacent crossover wire 43 and the winding start line 40V from coming into contact with each other and facilitate the passage of the winding start line 40V through the wire guide groove Mb5. Similarly, the U-phase winding start wire 40U also exits from the coil 8a through the second outer wall wire path Mb3. In this case as well, the interference prevention protrusion 31b restricts the winding start wire 40U from approaching the adjacent crossover wire 43. Play a role.

  In the above description, the case where the coil 8a of the tooth V1 is wound clockwise toward the paper surface is described. On the contrary, when the coil 8b of the tooth W1 is wound clockwise toward the paper surface, The winding start line 40W exits from the second outer wall wire path Mb3 of the tooth W1, and the interference prevention protrusion 31b similarly serves to prevent the winding start line 40W from coming into contact with the adjacent adjacent crossover wire 43.

  In the present embodiment, the arrangement of the separation jumpers 41U to 41W has been described so as to correspond to FIG. 3, but the invention can be achieved even if the U phase, the V phase, and the W phase are exchanged for the convenience of control of the rotating electrical machine. Needless to say, this is true. Further, with respect to the connecting wire that extends over the laminated back yoke portions 11a and 11b, the separating connecting wire 41V, which is the lower side of the outer end wire guides 31a1 and 31a2 in the above description, is located above the outer end wire guides 31a1 and 31a2. In a place where the other separation wire 41W is not disposed, the separation wire 41W may be disposed above the outer end wire guides 31a1 and 31a2. Similarly, in the above description, the separation connecting wire 41W which is the upper side of the outer end wire guides 31a1 and 31a2 is located outside the outer end wire guide 31a1 and 31a2. The wire guides 31a1 and 31a2 may be arranged below the part wire guides 31a1 and 31a2.

  Next, the order is changed, but the U-phase winding unit group 1U (the U-phase split stator group 10U is formed by winding the coils 8a and 8b), the V-phase winding unit group 1V, and the W-phase winding unit. For the coil winding process of winding the coils 8a and 8b around the group 1W and the winding device of the stator 100, the coil winding process to the U-phase winding part group 1U constituting the U phase of the stator 100 is taken as an example. explain.

FIG. 13 is a top view showing a state in which a coil is wound around the U-phase winding part group 1U by the winding device 50. FIG.
FIG. 14 is a top view showing a state where the winding of the coil to the U-phase winding unit group 1U is completed by the winding device 50. FIG.
The winding device 50 includes a plurality of split laminated iron cores 1a and 1b (here, two sets of a pair of split laminated iron cores 1), and winding portions UK1 to UK4 in which the first insulator 3a and the second insulator 3b are mounted, A chuck mechanism 51 is provided that is arranged in an annular shape so that the inner peripheral ends of the laminated tooth portions 12a and 12b face outward. The chuck mechanism 51 includes a movable claw 522 that holds the dovetail grooves 11a1 and 11b1 provided in the respective winding portions UK1 to UK4. The chuck mechanism 51 is connected to a servo motor or a stepping motor capable of position control, and can be rotated around the rotation drive shaft C.

  Further, the winding device 50 is opposed to the respective winding portions UK1 to UK4 in order from the outer peripheral side, and while supplying the wire 6, the winding portions UK1 to UK4 around the axis R (the central axis of the winding portion). Is provided with a flyer 58 that winds the coil 8 around each of the winding portions UK1 to UK4. The flyer 58 slides in the direction of the arrow X in FIG. 13 in synchronization with the turning motion in order to improve the alignment of the coils 8.

  As shown in FIG. 13, the chuck mechanism 51 includes a straight line B1 that connects the axial centers of the assembled winding portions UK1 and UK3 and a straight line B2 that connects the axial centers of the winding portions UK2 and UK4. The winding portions UK1 to UK4 are positioned so as to pass through C. As a result, the winding portions UK1 to UK4 can be moved to the same position with respect to the flyer 58 simply by rotating the rotary drive shaft C, and the adjustment time of the winding operation of the winding device 50 can be shortened. ing. In addition, the chuck mechanism 51 hooks the separation jumper wires 41U to 41W between the second winding portion (UK2 in the drawing) and the third winding portion (UK3 in the drawing) as the winding order of the coil 8. An adjustment hook 55 is used.

  Next, the winding process of winding the coil 8 around the U-phase winding part group (set of UK1 to UK4) for the U-phase will be described. The winding portions UK1 to UK4 to which the first insulator 3a and the second insulator 3b are assembled are put into the chuck mechanism 51 of the winding device 50 so that the side on which the second insulator 3b is attached is on the upper side. When the movable claw 522 provided in the chuck mechanism 51 is opened, the dovetail grooves 11a1 and 11b1 are gripped, and the winding portions UK1 to UK4 are fixed to the chuck mechanism 51.

  Next, the winding part UK1 around which the coil 8a is wound first is made to face the axis R of the flyer 58. The wire 6 is supplied from the nozzle 58a of the flyer 58, and the coil 8a is wound by the turning operation of the flyer 58. Next, the terminal wire of this coil 8a is connected to the second outer wall wire path Mb3 of the second insulator 3b of the winding part UK1 and the second insulator 3b of the adjacent winding part UK2 by the operations of the flyer 58 and the chuck mechanism 51. The adjacent crossover wire 43 is formed through the two outer wall wire paths Mb4. In order to shorten the work time, the winding portion UK2 is made to face the flyer 58 in the operation of forming the adjacent crossover wire 43. Next, the flyer 58 is turned in the direction opposite to the direction wound around the winding part UK1, and the coil 8b is wound around the winding part UK2.

  Thus, the winding to the winding parts UK1 and UK2 including the first divided laminated cores 1a and 1b is completed. Subsequently, the terminal wire of the coil 8b wound around the winding portion UK2 is passed through the inner wall wire path Ma1 of the first insulator 3a on the lower side of the winding portion UK2 by the operations of the flyer 58 and the chuck mechanism 51 (see FIG. 2). Subsequently, it is hooked on the adjustment hook 55 and is passed through the inner wall wire path Ma2 provided in the first insulator 3a of the winding part UK3, and this becomes the separation connecting wire 41U. In order to shorten the work time, the winding portion UK3 is made to face the flyer 58 in the operation of forming the separation connecting wire 41U.

  Next, the flyer 58 is turned in the same direction as when wound around the winding part UK2, and the coil 8b is wound around the winding part UK3. By operating the flyer 58 and the chuck mechanism 51, the terminal wire of the coil 8b is moved to the second outer wall wire path Mb3 of the second insulator 3b of the winding portion UK3, and the second outer wall wire of the second insulator 3b of the adjacent winding portion UK4. It passes through the route Mb4 and is defined as an adjacent crossover 43. In order to shorten the work time, the winding portion UK4 is made to face the flyer 58 in the operation of forming the adjacent crossover wire 43.

  Next, the flyer 58 is turned in the same direction as when the winding part UK1 is wound, and the coil 8a is wound around the winding part UK4. As shown in FIG. 14, the winding end line 45U of the coil 8a passes through the second outer wall wire path Mb3 of the second insulator 3b of the winding part UK4, and the terminal wire hook 32b of the second outer wall 34b of the second insulator 3b. It is cut by securing the length by being hooked on the wire. At this time, the terminal line hook 32b is regulated so that the winding end line 45U is not detached, and rework due to failure to hook the winding end line 45U can be prevented.

  As described above, the winding process to the U-phase winding part group 1U is completed to obtain the U-phase split stator group 10U. The U-phase split stator group 10U that has completed the winding fixed to the chuck mechanism 51 can be taken out by closing the movable claw 522 of the chuck mechanism 51. Then, the U-phase split stator group 10U is taken out, the next V-phase winding unit group 1V is put into the chuck mechanism 51, and the winding process of the V-phase coil 8 is performed.

  In the above description, the winding process of winding the coil 8 around the U-phase winding part group 1U has been described, but the same applies to the winding of the coil 8 around the V-phase winding part group 1V. For the winding part of the W-phase winding part group 1W, the winding direction of the coil 8 only needs to be opposite to the U-phase as shown in FIG.

According to the stator 100 of the rotating electrical machine according to the first embodiment of the present invention, it is difficult for the crossover wire to become hazy when storing the separation crossover wire 41U. Further, workability can be improved and variation in the crossover shape can be suppressed. In addition, the maximum amount of slack of the separation jumper 41U can be suppressed, and the storage space for the separation jumper can be reduced in size. Moreover, the stator 100 of the rotary electric machine which can prevent the interference between the separated connecting wires 41U to 41W of different phases and the adjacent connecting wires 43 without increasing the size of the first insulator 3a and the second insulator 3b, and has high dielectric strength. Can be provided.
In addition, since the high-density coil 8 can be wound at a high speed by reducing the number of parts, the stator 100 having high dielectric strength can be produced without causing interference between the separate connecting wires 41U to 41W and the adjacent connecting wires 43 of different phases. can do.

In this embodiment, an example of a stator 100 (armature) of a 10-pole 12-slot three-phase DC brushless motor has been described. However, for example, a 3-phase DC brushless motor having a 20-pole 24 slot, a 30-pole 36 slot, or the like. The same can be applied to the case.
Further, in the present embodiment, for the convenience of explanation, the winding start lines 40U to 40W are described as the neutral point side, and the winding end lines 45U to 45W are described as the input terminal side. Even if the order of By using such an electrical wiring, the number of connecting portions of the wire 6 is small, and the locations where there is a possibility of contact between the spaced-apart connecting wires 41U to 41W and the adjacent connecting wires 43 can be reduced to the limit, and the shape of the insulator is complicated. Further, it is possible to suppress an increase in size and an increase in the size of the stator 100.

Embodiment 2. FIG.
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings, focusing on portions different from the first embodiment.
FIG. 15 is a top view of stator 200 according to Embodiment 2 of the present invention.
FIG. 16 is a perspective view of the split laminated core 201 that constitutes the stator core 210 of the stator 200.
FIG. 17 is a perspective view showing a state in which the same first insulator 3a and second insulator 3b as those of the first embodiment are attached to the divided laminated iron core 201 shown in FIG.
18A is a top view showing a state immediately after the winding of the one-phase divided stator group 210X, and FIG. 18B is a perspective view thereof.

  The stator core 210 of the stator 200 includes 12 split laminated iron cores 201 formed by laminating iron core pieces 205 made of silicon steel plates each including a back yoke portion 202 and a teeth portion 203 protruding radially from the back yoke portion 202. The circumferential contact portions are connected and fixed by caulking or welding, and are different from Embodiment 1 in that they are not connected as a set. The electrical configuration of the stator 200 and the arrangement of the crossover wires are the same as in the first embodiment. By reducing the size of the split laminated iron core 201 in this way, it is possible to suppress the size of the mold for punching the iron core and reduce investment. In addition, it is easy to change the mold setup, and it is possible to build a production line that can handle a wide variety of products.

Embodiment 3 FIG.
Hereinafter, the third embodiment of the present invention will be described with reference to the drawings, focusing on the differences from the first embodiment.
FIG. 19 is a perspective view showing a state in which the insulator 303 is integrally formed with the divided laminated cores 1a and 1b of the pair of divided laminated cores 1 shown in FIG.

  The insulator 303 has a shape in which the first insulator 3a and the second insulator 3b in the first embodiment are integrated, and is integrally formed and attached to the divided laminated cores 1a and 1b. By mounting the insulator 303 having no dividing surface in this way, it is possible to prevent the wound coil from rubbing against the edge of the dividing surface and causing insulation deterioration.

  It should be noted that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted.

100, 200 Stator, 10 Stator core, 10U U phase split stator group,
10V V-phase split stator group, 10W W-phase split stator group, 10X split stator group,
0 center point, 1 pair of divided laminated iron cores, 1a, 1b, 201 divided laminated iron cores,
1U U phase winding part group, 1V V phase winding part group, 1W W phase winding part group,
2,202 back yoke portion, 3,203 teeth portion, 3a first insulator,
3b 2nd insulator, 303 insulator, 5,205 iron core piece,
5N neutral point terminal, 5U to 5W input terminal, 6 wires, 8, 8a, 8b coil,
R, Q axis, 11a, 11b laminated back yoke part, 11a1, 11b1 dovetail groove,
11at, 11bt end, 12a, 12b laminated teeth portion, 13 connecting portion,
31a1, 31a2 outer end wire guide, 31a3 outer center wire guide,
31a11 bottom surface, 31a31 bottom surface, 31b interference prevention protrusion, 32b terminal wire hook, 33a1, 33a2, 33b1, 33b2, first turn guide groove, 34a first outer wall,
34a3 first central portion, 34b second outer wall, 34b3 second central portion, 35a first inner wall, 35b second inner wall, 35a1, 35a2 inner end wire guide,
35a3 inner center wire guide, 35a21, 35a22 innermost periphery,
35a31 outermost peripheral part, 35au upper end surface, 36a first coil insulating part,
36b 2nd coil insulation part, 36a1, 36b1 chamfering part, 37a 1st stage part,
37b Second stage part, 40, 40 U, 40 V, 40 W Winding start line,
38a Spacing wire regulating protrusion, 39b Terminal insertion hole,
41, 41U, 41V, 41W Spatial connecting wire, 43 Adjacent connecting wire,
45U, 45V, 45W end winding wire, 50 winding device, 51 chuck mechanism,
55 adjustment hook, 58 flyer, B1, B2 straight line, C1 rotary drive shaft,
U1-U4, V1-V4, W1-W4 teeth, 522 movable claws,
UK1-UK4 winding part, Ma1, Ma2 inner wall wire path,
Ma3, Ma4 first outer wall wire path, Ma5 first outer wall central wire path,
Mb3, Mb4 second outer wall wire path, Mb5 wire guide groove, C rotary drive shaft,
O Stator center.

Claims (14)

A stator core in which a plurality of split cores each having a back yoke part and a teeth part protruding radially inward from the back yoke part are connected in an annular shape;
In a stator of a rotating electric machine having a separation wire that continuously connects a coil wound around the split iron core via an insulator to the coil of another non-adjacent split iron core,
The insulator includes a first outer wall erected axially upward from an inner peripheral side edge of the back yoke portion on one end surface in the axial direction of the divided core, and an axial direction of an inner peripheral tip portion of the tooth portion on the one end surface. A first inner wall erected in the same direction as the first outer wall from above the edge, and a first coil insulating portion connected to the first outer wall and the first inner wall and covering a predetermined range of the outer peripheral surface of the teeth portion A first insulator comprising: and
A second outer wall standing upright in the axial direction from the inner peripheral side edge of the back yoke portion on the other end surface in the axial direction of the divided iron core, and an inner portion of the tooth portion on the other end surface at the inner peripheral end of the tooth portion. A second inner wall erected in the same direction as the second outer wall from above an axial edge of the peripheral tip, and the first coil connected to the second outer wall and the second inner wall and on the outer periphery of the tooth portion A second insulator comprising a second coil insulating portion covering a range other than the range covered by the insulating portion,
At both ends in the circumferential direction of the axial end surface of the first inner wall, there are inner end wire guides that stand up in the axial direction and guide the separation crossover line,
In the center in the circumferential direction of the axial end surface of the first inner wall, there is an inner central wire guide that stands up in the axial direction and guides the separation jumper line,
The inner end wire guide and the inner central wire guide are arranged such that the innermost peripheral portion of the inner end wire guide is radially outer than the outermost peripheral portion of the inner central wire guide,
The spaced-apart connecting wire is disposed on the first outer wall or the first inner wall of the first insulator, and the adjacent connecting wire for continuously connecting the winding start line, the winding end line, and adjacent coils of the coil is A stator of a rotating electrical machine disposed on the second outer wall or the second inner wall of the insulator. At both ends in the circumferential direction of the outer peripheral surface of the first outer wall, there is an outer end wire guide that supports the separation connecting wire,
Two first outer wall wire paths extending in the axial direction between the two outer end wire guides of the first outer wall and opening in the radial direction and communicating with the circumferential end surface of the first coil insulating portion Have
At the upper end of the outer peripheral surface of the first central portion of the first outer wall, sandwiched between the two first outer wall wire paths,
An outer central wire guide having a tapered shape that is inclined inward toward the upper side in the axial direction and regulates out-of-plane so that the separation jumper routed around the outer end wire guide is not separated in the axial direction; The stator of the rotary electric machine according to claim 1. A first outer wall central wire path that opens in a radial direction and that guides the separation connecting wire in a radial direction adjacent to the outer central wire guide is provided at an axial tip of the first central portion of the first outer wall. The stator of the rotary electric machine according to claim 2. The second outer wall has two second outer wall wire paths that extend in the axial direction and open in the radial direction and communicate with the circumferential end surface of the second coil insulating portion,
The center portion of the second outer wall of the second outer wall sandwiched between the two second outer wall wire paths extends in the circumferential direction on the upper end surface in the axial direction, and the winding start line of the coil and the adjacent connecting wire The height of the upper end surface of said 2nd outer wall center part is higher than the height of the upper end surface of the other part of the 2nd outer wall. Stator for rotating electric machine. The center part of the second outer wall protrudes radially outward from the outer peripheral surface of the center part of the second outer wall, and has an interference prevention protrusion that prevents interference between the separation jumper line and the winding start line. The stator of the described rotating electrical machine. The first outer wall and the second outer wall protrude to the outer peripheral side of the base of the first outer wall and the second outer wall, respectively, extend in the circumferential direction on the edge of the back yoke portion, and The stator for a rotating electrical machine according to any one of claims 2 to 5, further comprising a stage portion that prevents contact with the back yoke portion. The fixing of the rotating electrical machine according to any one of claims 2 to 6, further comprising a terminal wire hook protruding outward in a radial direction on an outer peripheral surface of one end portion in the circumferential direction of the second outer wall and the tip end in the axial direction. Child. At least one of the first coil insulating portion and the second coil insulating portion has a chamfered portion at the boundary between the axial end surface and the radial end surface,
When the first coil insulating portion has the chamfered portion, the first coil insulating portion has a first turn guide groove that guides the first turn of the coil at a boundary portion between the chamfered portion and the first outer wall.
When the second coil insulating portion includes the chamfered portion, the first coil guide groove has a first turn guide groove that guides the first turn of the coil at a boundary portion between the chamfered portion and the second outer wall. The stator for a rotating electrical machine according to claim 7. The said outer side edge part wire guide has an out-of-plane control | regulation shape part which controls so that the said separation jumper may not leave | separate radially outward from the outer peripheral surface of a said 1st outer wall. The stator of the rotating electrical machine described in 1. The inner end wire guide has an out-of-plane regulating shape portion that regulates the separation connecting line so as not to be separated from the axial end surface of the first inner wall in the axial direction.
The out-of-plane regulating shape portion and the inner central wire guide are arranged such that the innermost peripheral portion of the out-of-plane regulating shape portion is radially inward from the outermost peripheral portion of the inner central wire guide. The stator for a rotating electrical machine according to any one of claims 2 to 9. The stator of a rotating electrical machine according to any one of claims 1 to 10, wherein a pair of adjacent split iron cores are connected with a thin end portion in a circumferential direction of the back yoke portion. The stator for a rotating electrical machine according to any one of claims 1 to 11, wherein the first insulator and the second insulator are integrally formed. The coil of the stator is Y-connected in three phases,
In-phase coils are continuously wound in opposite directions around a pair of adjacent split cores, and are further continuously connected to another pair of adjacent split cores via the separation wire having a predetermined length. Having a split stator group wound in opposite directions to each other,
The pair of split iron cores constituting another two-phase split stator group are sandwiched between the split iron cores connected by the separation jumper wires. The stator of the rotating electrical machine according to the item. The split core is a split laminated core in which core pieces each having an iron core piece back yoke part and an iron core piece tooth part protruding radially inward from the iron core piece back yoke part are laminated. The stator of the rotating electrical machine according to item 1.

Images