TW201631865A - Stator of rotary electric machine - Google Patents

Abstract

This invention provides a stator (100) of a rotary electric machine, the stator (100) having a core end insulation member (4a, 4b) which covers the two axial end surfaces of a split core (12), and an insulation film (5) which extends along an inner peripheral surface of a yoke portion (12a) and a side surface in a peripheral direction of a magnetic pole teeth portion (12b) and an outer peripheral surface of a shoe portion (12c), for insulating the inner peripheral surface of the yoke portion (12a) and the side surface in the peripheral direction of the magnetic pole teeth portion (12b) and the peripheral surface of the shoe portion (12c) from coil (3), wherein the insulation film (5) has an axial length longer than an axial length of the split core (12), and the end surfaced insulation member has an end surface insulation portion (4a1) which has a peripheral width equal to or smaller than the peripheral width of the magnetic pole teeth portion (12b).

Description

Stator of rotating electrical machine

The present invention relates to a stator for a rotating electrical machine used in an industrial machine or the like.

In the stator of the conventional rotating electrical machine, in terms of the method of insulating the iron core and the coil, there is proposed a method in which an insulating film is disposed along the inner wall of the groove in the inside of the groove of the housing coil. In the axial end faces of the iron core, a saddle-shaped resin-made insulating end plate is covered by covering the iron core and the insulating film, thereby winding the coil and the iron core wound around the insulating film and the insulating end plate. It is insulated (for example, refer to Patent Document 1).

In addition, in recent years, due to the demand for small size and high speed of industrial machinery, the rotary electric machine used for the industrial machine is also required to be small and high in output, and in order to increase the number of turns of the coil, one of the means is There is a need for technology to expand the groove area.

(previous technical literature) (Patent Literature)

Patent Document 1: Japanese Patent Laid-Open Publication No. 2003-61286

In the insulating structure shown in Patent Document 1, in the vicinity of both end portions in the axial direction of the iron core, the insulation of the inner wall surface of the iron core and the coil is formed in the circumferential direction to form the insulating end plate and the insulating film of the resin molded product. Composition. In terms of insulation function, this is excessive insulation. Moreover, the insulating end plate protruding in the circumferential direction toward the groove reduces the groove area, thereby reducing the number of turns of the coil wound around the magnetic pole tooth portion, and is contrary to the small size and high output required for the rotating motor. The problem of the requirement for the expansion of the groove area.

The present invention has been made in order to solve the above problems, and an object of the invention is to provide a stator for a rotating electrical machine that can surely ensure insulation between a core and a coil, and can enlarge a groove region to increase the number of turns of the coil.

A stator of a rotating electrical machine according to the present invention includes: an iron core in which a plurality of split cores are coupled in an annular shape, and has a yoke portion, a magnetic pole tooth portion projecting inward from the yoke portion, and a magnetic tooth portion from the magnetic pole portion a crotch portion protruding toward the circumferential direction at the inner circumferential side; and a coil wound around the magnetic pole tooth portion; wherein the stator system includes: an iron core end insulating member disposed in an axial direction of the split core And an insulating film disposed along an inner circumferential surface of the yoke portion, a side surface in a circumferential direction of the magnetic pole tooth portion, and an outer circumferential surface of the crotch portion, and an inner circumferential surface of the yoke portion and the inner circumferential surface The side surface of the magnetic pole tooth portion in the circumferential direction and the outer circumferential surface of the crotch portion are insulated from the coil; The core end insulating member has an end surface insulating portion that covers an end surface of the magnetic pole tooth portion in the axial direction, and an inner flange that protrudes from the end portion on the inner circumferential side of the end surface insulating portion toward both sides in the circumferential direction. And extending outward in the axial direction; and the outer flange protrudes toward both sides in the circumferential direction so as to cover the axial end surface of the yoke from the end portion on the outer circumferential side of the end surface insulating portion, and extends upward in the axial direction. a flange; a length of the insulating film in the axial direction is longer than a length of the split core in the axial direction, and a width of the end face insulating portion in the circumferential direction is equal to or less than a width of the magnetic pole tooth portion in the circumferential direction.

According to the stator of the rotating electrical machine of the present invention, the insulation of the side surface in the circumferential direction of the end portion of the magnetic pole tooth portion of the split core can be only an insulating film, so that the groove region can be enlarged, and the iron core and the coil can be surely secured. Insulation. Thereby, the number of turns of the coil can be increased, and the rotary electric machine using the stator can be made small and high in output.

3‧‧‧ coil

4a, 4b, 204a, 304a, 404a‧‧‧ core end insulation members

4a1, 4b1, 204a1‧‧‧ end face insulation

4a2 to 4a5, 4b2 to 4b5, 204a4, 204a5, 404a2, 404a3, 404a4, 404a5‧‧‧ fitting protrusions

4a11‧‧‧ side

4as, 304as‧‧‧ outer flange

4au‧‧ inside flange

4X1‧‧‧Insulated end plate

5‧‧‧Insulation film

8‧‧‧Wire

9‧‧‧Outlet

10‧‧‧ iron core

12‧‧‧ Split core

12a, 212a‧‧ yoke

12a2, 212a2‧‧‧ inner circumference

12b, 212b‧‧‧ magnetic pole tooth

12b1‧‧‧ end face

12b2‧‧‧ side

12c‧‧‧锷

12c2‧‧‧ outer perimeter

12d‧‧‧ card slot

13, 14, 14b‧ ‧ split stator

20S‧‧‧ Groove

51a, 52a, 51b, 52b‧‧‧ opening and closing

100‧‧‧ Stator of rotating electrical machine

212, 413‧‧ ‧ split core

M‧‧‧Wire introduction slot

P‧‧‧crease

S, 20S‧‧‧ groove

S2 to s5‧‧‧ gap

T2 to T5‧‧‧ Conical Processing Department

Y5‧‧‧ transverse slot

X‧‧‧ thickness

Fig. 1 is a perspective view showing a stator of a rotating electrical machine according to a first embodiment of the present invention.

Fig. 2 is a plan view showing a split core constituting a stator of a rotating electrical machine according to Embodiment 1 of the present invention.

Fig. 3 (a) to (c) are diagrams showing the steps of assembling the split core, the core end insulating member, and the insulating film according to the first embodiment of the present invention, and the completed steps. A perspective view of the core of the split core.

Fig. 4 (a) and (b) are perspective views of the core end insulating member of the stator of the rotating electrical machine according to the first embodiment of the present invention.

Fig. 5 is a perspective view showing a coil winding step in the first embodiment of the present invention.

Fig. 6 (a) to (d) are cross-sectional views of the split stator according to the first embodiment of the present invention.

Fig. 7 is a plan view showing a split core of a stator according to a second embodiment of the present invention.

Fig. 8 (a) and (b) are perspective views of the core end insulating member of the stator of the rotating electrical machine according to the second embodiment of the present invention.

Fig. 9 (a) and (b) are cross-sectional views showing a divided stator according to a second embodiment of the present invention.

Fig. 10 is a perspective view showing a core end insulating member of a stator of a rotating electrical machine according to a third embodiment of the present invention.

Fig. 11 is a perspective view showing a core end insulating member of a stator of a rotating electrical machine according to a fourth embodiment of the present invention.

Fig. 12 (a) and (b) are views showing the core end insulating member of the fourth embodiment of the present invention viewed from the inner side and the circumferential direction of the stator.

Fig. 13 is a perspective view showing a step of attaching a core end insulating member to a split core to which an insulating film is attached in the fourth embodiment of the present invention.

Embodiment 1

Hereinafter, the stator of the rotary electric machine according to the first embodiment of the present invention will be described with reference to the drawings.

Fig. 1 is a perspective view of a stator 100 of a rotating electrical machine. The stator 100 is composed of a core 10 and a coil 3 housed in a groove of the core 10.

The second drawing is a plan view of the split core 12 constituting the core 10.

In this specification, unless otherwise specified, it is described as "axis. In the "direction", "circumferential direction", "diameter direction", "inner circumferential side", "outer circumferential side", "inner circumferential surface", and "outer circumferential surface", the "axis direction" and "circumferential direction" of the sub-100 are designated. ", radial direction", "inner circumferential side", "outer circumferential side", "inner circumferential surface", and "outer circumferential surface". In the present specification, if it is described as "upper" or "lower" unless otherwise specified, in the place where the reference is made, a plane perpendicular to the axial direction is assumed, and the center of the stator is included as the boundary. Set the side of the point to "Bottom" and the opposite part to "Up". Furthermore, when the height is relatively high, the distance from the center of the stator is set to be "higher".

The split core 12 is composed of: a yoke having an arc shape on the outer circumference 12a, a magnetic pole tooth portion 12b that protrudes inward from the center of the yoke portion 12a, and a flange portion 12c that protrudes in the circumferential direction from the front end of the magnetic pole tooth portion 12b. Further, a locking groove 12d extending in the axial direction is provided at the center of the outer peripheral surface of the yoke portion 12a. The locking groove 12d is a user in order to hold the split core 12 in a coil winding step which will be described later. The iron core 10 is composed of a plurality of split cores 12 combined into a ring shape. In the iron core 10, a groove S indicated by a hatched portion in Fig. 2 is formed between the adjacent magnetic pole tooth portions 12b.

Figure 3 (a) shows the split core 12 and the core end A diagram of the assembly steps of the edge members 4a, 4b and the insulating film 5.

Fig. 3(b) is a perspective view of the divided core 13 in which the divided core 12, the core end insulating members 4a and 4b, and the insulating film 5 have been insulated.

Fig. 3(c) is a perspective view showing a state in which the insulating film 5 is opened from the state of Fig. 3(b).

The core end insulating members 4a, 4b are trees of the same shape Fat molded product. In the present specification, even if only one core end insulating member is described, the two core end insulating members are the same unless otherwise specified. The core end insulating members 4a and 4b have an insulating function for insulating the end surface 12b1 in the axial direction of the magnetic pole tooth portion 12b of the split core 12 from the coil 3, and a winding frame for facilitating the arrangement of the coils 3. Function; and fixing function of the insulating film of the fixed insulating film 5.

The insulating film 5 is formed along the inner peripheral surface 12a2 of the yoke portion 12a. The side surface 12b2 in the circumferential direction of the magnetic pole tooth portion 12b and the outer circumferential surface 12c2 of the weir portion 12c are disposed. Further, the insulating film 5 is a resin film that insulates the inner peripheral surface 12a2 of the yoke portion 12a, the side surface 12b2 in the circumferential direction of the magnetic pole tooth portion 12b, and the outer peripheral surface 12c2 of the flange portion 12c and the coil 3. The insulating film 5 can be opened and closed in the circumferential direction as shown in Fig. 3(c). Further, the length of the insulating film 5 in the axial direction is formed to be longer than the length of the split core 12 in the axial direction.

Figure 4 (a) shows the core end insulation from obliquely above. A perspective view of piece 4a.

Fig. 4(b) is a perspective view of the core end insulating member 4a viewed obliquely from below. Next, a portion for providing the above-described insulating function, winding frame function, and insulating film fixing function will be described for each of the core end insulating members 4a.

The end face insulating portion 4a1 covers the axis of the magnetic pole tooth portion 12b. The above-described end face 12b1 functions as the above-described insulating function for ensuring insulation between the magnetic pole tooth portion 12b and the coil 3. The insulating member described in Patent Document 1 covers a part of the circumferential side surface of the magnetic pole tooth portion 12b in addition to the end surface in the axial direction of the split core, and continues to the end surface. On the other hand, the end surface insulating portion 4a1 of the present embodiment is formed so as to cover only the end surface 12b1 of the magnetic pole tooth portion 12b in the axial direction. In other words, the width of the end face insulating portion 4a1 in the circumferential direction is the same as the width of the magnetic pole tooth portion 12b in the circumferential direction.

The end portion on the inner peripheral side of the end surface insulating portion 4a1 is provided at An inner flange 4au that protrudes toward both sides in the circumferential direction and extends upward in the axial direction. In addition, the end portion on the outer peripheral side of the end surface insulating portion 4a1 is provided with a flange 4as that protrudes toward both sides in the circumferential direction so as to cover the end surface of the yoke portion 12a in the axial direction, and extends upward in the axial direction. The inner flange 4au, the outer flange 4as, and the end surface insulating portion 4a1 constitute one end of the winding frame of the wound coil 3 to exhibit the above-described winding frame function.

Furthermore, the core end insulating member 4a is provided with a fitting protrusion The engaging portions 4a2, 4a3 (first fitting projections) projecting downward from the inner flange 4au in the axial direction via the magnetic pole tooth portions 12b, and fitted to the crotch portion 12c The upper end of the outer peripheral surface 12c2. Similarly, the core end insulating member 4a includes fitting projections 4a4 and 4a5 (second fitting projections), and the fitting projections 4a4 and 4a5 are respectively moved from the outer flange 4as via the magnetic pole tooth portions 12b. The lower side in the axial direction protrudes and is fitted to the upper end of the inner peripheral surface 12a2 of the yoke portion 12a. Further, as shown in Fig. 4(b), the end face insulating portion 4a1 and the fitting projection portions 4a2 to 4a5 of the core end insulating member 4a are provided. Between the slits s2 to s5 into which only the insulating film 5 can be inserted is formed. Further, on the outer peripheral side of the root portion of the fitting projections 4a5 and 4a4, a lateral groove y5 through which the insulating projections 5 are inserted along the fitting projections 4a5 and 4a4 is provided in the circumferential direction.

Both ends of the insulating film 5 in the axial direction are sandwiched and held Between the fitting projections 4a2, 4a3 and the crotch portion 12c, and between the fitting projections 4a4, 4a5 and the yoke portion 12a. Thereby, the core end insulating member 4a functions as the insulating film fixing function of holding the insulating film 5 in the groove S while being fixed to the end portion of the split core 12 in the axial direction.

Prior art insulated end plate insulation end plate and split iron The fitting portion of the core is connected to the outer peripheral side surface of the flange portion from the inner peripheral side surface of the yoke portion, and the insulating end plate and the split core are overlapped on the side end portion of the magnetic pole tooth portion. On the other hand, the end surface insulating portion 4a1 of the core end insulating member 4a of the present embodiment does not overlap the side surface 12b2 in the circumferential direction of the magnetic pole tooth portion 12b, and the side surface 4a11 of the core end insulating member 4a is connected to the magnetic pole tooth. The side 12b2 of the portion 12b is flush, and there is no step difference. Further, the axial end portions of the insulating film 5 are inserted into the aforementioned slits s2 to s5, the lateral grooves y5, and the like. Therefore, the insulating film 5 can completely insulate the side surface 12b2 of the magnetic pole tooth portion 12b of the split core 12 in the circumferential direction.

Next, a method of manufacturing the stator 100 will be described.

First, as shown in Fig. 3(a), the inner peripheral surface 12a2 of the yoke portion 12a, the side surface 12b2 in the circumferential direction of the magnetic pole tooth portion 12b, and the outer peripheral surface 12c2 of the flange portion 12c are inserted into the circumference. The insulating film 5 is open in the direction.

The insulating film 5 is formed by making a crease P in advance along the shape of the inner surface of the groove S (actually, it is half). Crease P is The portion extending along the inner circumferential side and the circumferential end portion of the yoke portion 12a, the portion along the root portion of the magnetic pole tooth portion 12b, and the root portion and the circumferential direction along the outer circumferential side of the crotch portion 12c are provided so as to extend in the axial direction. Part of the end.

When the insulating film 5 is attached to the split core 12, it is attached to The entire crease P is assembled in a folded state. Thereby, since the insulating film 5 is formed along the shape of the split core 12, the mounting step of the subsequent core end insulating members 4a, 4b becomes easy.

Next, as shown in Figure 3 (b), the core end is insulated. The members 4a and 4b are fitted to the split core 12 from both sides in the axial direction of the split core 12 to obtain the divided core 13 which has been insulated. At this time, both ends of the insulating film 5 in the axial direction are sandwiched and fixed between the fitting projections 4a2 to 4a5, 4b2 to 4b5 of the core end insulating members 4a and 4b and the split core 12. Further, the fitting projections 4a2 to 4a5, 4b2 to 4b5 are positioned just between the respective creases.

Thereby, the insulating film 5 can be prevented from being wound before the winding of the coil 3. When a part of the film is re-expanded, the insulating film 5 is deformed in the groove S, and thus the arrangement of the wires is disturbed when the coil is wound.

Figure 5 shows the winding of the coil 3 in Figure 3 (c) A perspective view of the coil winding step of the completed insulated split core 13 in the state. First, the locking groove 12d provided in the axial direction of the outer peripheral surface of the split core 12 is held by a winding device (not shown). Then, the opening and closing portions 51a, 52a, 51b, and 52b of the insulating film 5 are opened along the crease P in the circumferential direction.

Next, the split core 13 that has completed the insulation is turned toward the fifth The direction of the arrow rotates, and one side releases the wire 8 from the outlet nozzle 9 The coil 3 is wound around the split core 13 which has been insulated. It is also possible to fix the side of the split core 13 which has completed the insulation and rotate the outlet nozzle 9. After the winding of the coil 3 is completed, the opening and closing portions 51a, 52a, 51b, and 52b of the insulating film 5 are closed in the radial direction along the crease P to obtain the divided stator 14. Next, a plurality of divided stators 14 are combined into a ring shape, and the adjacent divided stators 14 are melted or resin-molded, or thermally fitted to an aluminum frame, and fixed, whereby the stator 100 is obtained.

Fig. 6(a) is a cross-sectional view of the divided stator 14.

Fig. 6(b) is a cross-sectional view showing the line AA of Fig. 6(a), showing the magnetic pole tooth portion 12b, the end face insulating portion 4a1 of the core end insulating member 4a, and the insulating film 5 along the magnetic pole teeth. Part of the part 12b.

Fig. 6(c) is a cross-sectional view showing the split stator 14b when the prior art insulating end plate 4X1 is used in the split stator of the present embodiment.

Fig. 6(d) is a cross-sectional view taken along line B-B of Fig. 6(c). Further, Fig. 6(d) shows the same display object as that of Fig. 6(b).

From the comparison between Fig. 6(a) and Fig. 6(c), it is found in In the embodiment, the insulating member of the side surface 12b2 in the circumferential direction of the magnetic pole tooth portion 12b is only the insulating film 5, so that the groove region can be enlarged, and the number of turns of the coil 3 can be increased as compared with the case where the prior art is applied.

Stator of a rotating electrical machine according to Embodiment 1 of the present invention Since the insulation of the side surface 12b2 in the circumferential direction of the end portion of the magnetic pole tooth portion 12b of the split core 12 in the circumferential direction can be only the insulating film 5, the groove region can be enlarged and the core can be surely secured. Insulation of the coil. Thereby, the number of turns of the coil can be increased, and the rotary electric machine using the stator 100 can be used. Small size. High output.

Furthermore, the length of the insulating film 5 in the axial direction is greater than the split iron The length of the core 12 in the axial direction is longer. Therefore, in the divided iron core 13 in which the insulation has been completed, the insulating film 5 along the side surface 12b2 of the circumferential direction of the magnetic pole tooth portion 12b is overlapped with the end surface insulating portions 4a1, 4b1 of the core end insulating members 4a, 4b. Arranged on the side surface 4a11 in the circumferential direction. Thereby, the insulation of the split core 12 and the coil 3 can be completely ensured.

In addition, in the above description, although the end face is described The width of the insulating portion 4a1 in the circumferential direction and the width of the magnetic pole tooth portion in the circumferential direction are formed to have the same length. However, the circumferential width of the end surface insulating portion 4a1 may be formed by the margin of the length of the insulating film 5. It is smaller than the width of the magnetic pole tooth portion 12b in the circumferential direction.

Embodiment 2

In the following, a stator of a rotating electrical machine according to a second embodiment of the present invention will be described with reference to a portion different from the first embodiment.

Fig. 7 is a plan view showing a split core 212 constituting an iron core according to a second embodiment of the present invention.

Fig. 8(a) is a perspective view of the core end insulating member 204a viewed from an oblique upper side.

Fig. 8(b) is a perspective view of the core end insulating member 204a viewed obliquely downward.

Fig. 9(a) is a cross-sectional view of the divided stator 214.

Figure 9(b) is a cross-sectional view taken along line C-C of Figure 9(a) showing magnetic pole teeth The portion 12b, the end face insulating portion 204a1 of the core end insulating member 204a, and the portion of the insulating film 5 along the magnetic pole tooth portion 212b.

Unlike the first embodiment, the inner peripheral surface 212a2 of the yoke portion 212a of the split core 212 is formed in a circular cross section perpendicular to the axial direction, and has an arc shape equal to the outer peripheral surface. Further, the thickness X in the radial direction of the fitting projections 204a4 and 204a5 of the core end insulating member 204a is set to be larger than the fitting projections 4a4 and 4a5 of the first embodiment in the space to be enlarged in the recess 20S (refer to Fig. 4) The thickness in the diameter direction is thicker, and each outer peripheral surface is formed along the inner peripheral surface of the yoke portion 12a to increase its strength.

Thereby, the fitting protrusions 204a4, 204a5 push the insulation The force of the film 5 is increased, and even when the coil 3 is wound, the insulating film 5 is excessively spread, and the fitting projections 204a4 and 204a5 are not deformed. Furthermore, by increasing the strength of the core end insulating member 204a, the assembly of the divided core of the completed insulation can be improved. Further, it is easy to handle the divided iron core and the divided stator before and after the winding of the coil 3.

Furthermore, in the manufacture of the core end insulating member 204a Further, the fluidity of the resin can be improved to improve the formability of the core end insulating member 204a. Further, the manufacturing method of the stator is the same as that of the first embodiment.

Embodiment 3

In the following, a stator of a rotating electrical machine according to a third embodiment of the present invention will be described with reference to a portion different from the second embodiment.

Fig. 10 is a perspective view of the core end insulating member 304a viewed from an oblique upper side.

The configuration other than the core end insulating member 304a of the stator of the present embodiment is the same as that of the second embodiment.

As shown in Fig. 10, the difference between this embodiment is On one side of the extension line of the connection portion between the magnetic pole tooth portion 212b of the root portion of the flange 304as and the connection portion of the yoke portion 212a, the wire core introduction groove M is formed in the axial direction.

The wire introduction groove M is matched in the coil winding step The portion of the lead wire to which the coil 3 is wound is introduced, and the wire rod which is wound around the connection portion between the yoke portion 212a and the magnetic pole tooth portion 212b (the root portion of the magnetic pole tooth portion 212b) and the introduction wire are prevented from interfering. By arranging the wire introduction groove M, the arrangement of the coils 3 can be increased to increase the number of turns of the coil 3.

According to the iron core end insulating member 4a of the first embodiment, When the same wire introduction groove M is formed in 4b, the inner peripheral surface 12a2 of the yoke portion 12a is formed in a planar shape in the circumferential direction, so that the split core 12 interferes with the introduction wire. However, the combination of the shape of the yoke portion 212a of the split core 212 and the core end insulating member 304a of the third embodiment can avoid the above interference. Further, since the wire introduction groove M is used for introduction of the winding start end portion of the wire for the coil 3, it is not necessary to form the core end insulating member provided on the opposite side of the split core 12.

Embodiment 4

In the following, a stator of a rotating electrical machine according to a fourth embodiment of the present invention will be described with reference to a portion different from the first embodiment.

Figure 11 is a view of the core end insulating member 404a viewed from an oblique upper side. Stereo picture.

Fig. 12(a) is a view of the core end insulating member 404a viewed from the inside of the stator.

Fig. 12(b) is a view of the core end insulating member 404a viewed from the circumferential direction of the stator.

Fig. 13 is a perspective view showing a step of attaching the core end insulating member 404a to the split core 12 to which the insulating film 5 is mounted.

The core end insulating member 404a of the present embodiment is embedded The projections 404a2, 404a3, 404a4, 404a5 are characterized by their respective front end shapes.

As shown in Fig. 11 and Fig. 12 (a) and (b), the length of the fitting projections 404a4 and 404a5 on the yoke portion 12a side in the axial direction is a fitting projection portion 404a2, 404a3 on the side of the dam portion 12c. The length of the axis direction is longer.

In the first embodiment, as shown in Fig. 3, it is always The core end insulating member 4a, the split core 12 into which the insulating film 5 is inserted, and the core end insulating member 4b are linearly arranged on the line, and each of the above is moved in parallel with the axial direction of the split core, thereby assembling The insulated split core 13 has been completed. At this time, the fitting projections 4a2 to 4a5, 4b2 to 4b5 of the insulating film 5 belonging to the soft material and the core end insulating members 4a and 4b belonging to the resin molded article interfere with each other, and it is difficult to assemble.

Therefore, the inner fitting projections 404a2, 404a3 are changed. As shown in Fig. 13, the length of the fitting projections 404a4 and 404a5 of the outer side is inserted into the inner peripheral side of the yoke 12a in advance, and then the fitting is performed. Protrusions 404a4, 404a5 When the front end is a fulcrum, the core end insulating member 404a is rotated, and the fitting projections 404a2 and 404a3 on the side of the crotch portion 12c are fitted, thereby facilitating assembly of the insulated split core 413. .

Furthermore, as shown in Fig. 12 (a) and (b), by fitting The tapered processed portions T2 to T5 are provided on the side where the front ends of the protruding portions 404a2 to 404a5 are in contact with the insulating film 5, so that assembly can be further facilitated. Further, in the present embodiment, the outer fitting projections 404a4 and 404a5 are made longer, but they may be shortened. Further, in the tapered processing, only the fitting projections 404a2 and 404a3 on the inner side may be applied. In the first to third embodiments, only the fitting projections on the inner side or the fitting projections on the outer side may be applied.

According to a stator of a rotating electrical machine according to Embodiment 4 of the present invention, When the core end insulating member 404a, the insulating film 5, and the split core 12 are assembled, the core end insulating member 404a can be attached without damaging the insulating film 5. Further, since a general-purpose device or tool can be used in the manufacture of the stator, the manufacturing cost of the stator of the rotary electric machine can be suppressed.

Furthermore, the invention is free within the scope of its invention The respective embodiments are combined, and the respective embodiments are appropriately changed and omitted.

4a, 4b‧‧‧core end insulation members

4a1, 4b1‧‧‧End face insulation

4a2, 4a3, 4a5, 4b2, 4b3, 4b4, 4b5‧‧‧ fitting protrusions

4a11‧‧‧ side

5‧‧‧Insulation film

12‧‧‧ Split core

12a‧‧ yoke

12b‧‧‧Magnetic tooth

12b1‧‧‧ end face

12c‧‧‧锷

13‧‧‧Segment stator

P‧‧‧crease

Y5‧‧‧ transverse slot

Claims (6)

A stator for a rotating electrical machine comprising: an iron core, wherein a plurality of split cores are combined into an annular shape, the split core having a yoke portion, a magnetic pole tooth portion protruding inward from the yoke portion, and the magnetic pole from the magnetic pole a crotch portion in which a distal end of the inner peripheral side of the tooth portion protrudes in a circumferential direction; and a coil is wound around the magnetic pole tooth portion; wherein the stator includes an iron core end insulating member that is disposed on the split core And an insulating film disposed along an inner circumferential surface of the yoke portion, a side surface in a circumferential direction of the magnetic pole tooth portion, and an outer circumferential surface of the crotch portion, and an inner circumferential surface of the yoke portion The side surface of the magnetic pole tooth portion in the circumferential direction and the outer circumferential surface of the crotch portion are insulated from the coil; the core end insulating member has an end surface insulating portion covering an axial direction of the magnetic pole tooth portion. The end surface; the inner flange protrudes from the end portion on the inner circumferential side of the end surface insulating portion toward the both sides in the circumferential direction and extends upward in the axial direction; and the outer flange is the end portion on the outer peripheral side from the end surface insulating portion To cover the foregoing The axial direction of the end surface of the portion, protrudes on both sides in the circumferential direction, and extending upward in the axial direction; longitudinal axis line direction of the insulating film is longer than the division of the longitudinal axis of the core, The width of the end surface insulating portion in the circumferential direction is equal to or less than the width of the magnetic pole tooth portion in the circumferential direction. The stator of the rotary electric machine according to claim 1, comprising: two first fitting projections that protrude downward from the inner flange in the axial direction via the magnetic pole tooth portions, and are fitted At the outer circumferential end of the crotch portion, the two second fitting projections project downward from the outer flange in the axial direction via the magnetic tooth portion, and are fitted to the inner circumferential surface of the yoke. The core end insulating member has a gap between the end surface insulating portion and the first fitting protruding portion, and between the end surface insulating portion and the second fitting protruding portion, and the slit for inserting the insulating film The core end insulating member has a lateral groove extending along the circumferential direction of the insertion of the insulating film along the second fitting protrusion portion on the outer peripheral side of the root portion of the second fitting protrusion portion. The stator of the rotating electrical machine according to the second aspect of the invention, wherein the length of the second fitting projection in the axial direction is different from the length of the first fitting projection in the axial direction. The stator of the rotating electrical machine according to the second or third aspect, wherein at least one of the first fitting projection or the second fitting projection is in contact with the insulating film at the front end. The side has a tapered processing portion. Rotating electric power as described in any one of claims 2 to 4 In the stator of the machine, the inner peripheral surface of the yoke portion is formed in an arc shape in a cross section perpendicular to the axial direction, and the outer peripheral surface of the second fitting protrusion portion is along the inner peripheral surface of the yoke portion The way to form. The stator of the rotating electrical machine according to any one of the first to fifth aspect, wherein the root portion of the outer flange is an extension line of the connecting portion between the magnetic pole tooth portion and the yoke portion, The wire direction introduction groove is formed in the axial direction.