JP6871883B2 - Winding insulators, stators and motors - Google Patents

Description

The present invention relates to a stator winding wound around the teeth of the stator core and a winding insulation member that insulates the stator core.

Motors such as compressor-driven motors, vehicle-driven motors, and in-vehicle device-driven motors that have a stator and a rotor and have a stator winding wound around the teeth of the stator core that constitutes the stator (concentrated winding method). It is called a "centralized winding motor"). In a centralized motor, the stator windings are wound around the teeth via an insulator (called a "resin bobbin").
Further, in such a centralized winding motor, in order to increase the number of turns of the stator windings and increase the space factor of the stator windings, a stator core composed of a plurality of split cores (“fixation of a split structure”). An electric motor using a child core) has been proposed.
An electric motor using a stator core having a divided structure is disclosed in, for example, Patent Document 1 (Japanese Unexamined Patent Publication No. 6-225490). In the motor disclosed in Patent Document 1, the stator core is composed of a first core member having a tooth and a second core member having a yoke. The stator core is formed by assembling the first core member and the second core member in a state where the insulator around which the stator winding is wound is attached to each tooth of the first core member. Further, the electric motor disclosed in Patent Document 1 has a winding insulating member for preventing the stator winding wound around the insulator from coming into contact with the yoke of the stator core. The winding insulation member disclosed in Patent Document 1 is formed in a plate shape and is inserted into the space between the overhanging portion of the insulator and the yoke. The winding insulation member is formed with inclined portions on both side surfaces on the tip end side in the insertion direction to improve insertion workability. Further, the overhanging portion of the insulator is provided with an inclined portion that holds the inclined portion of the winding insulating member by an elastic force in order to hold the winding insulating member in the space.
Further, Patent Document 2 (Japanese Unexamined Patent Publication No. 2002-233092) has a first insulating portion, a second insulating portion, a first holding portion and a second holding portion, and is bent into a T shape. The winding insulation member is disclosed. The first holding portion and the second holding portion of the winding insulating member are inserted into the space between the stator winding and the yoke of the stator. Inclined portions for improving the insertion workability are formed on both side surfaces of the first holding portion and the second holding portion of the winding insulating member on the tip end side in the insertion direction.

Japanese Unexamined Patent Publication No. 6-225490 Japanese Unexamined Patent Publication No. 2002-233092

In the stator disclosed in Patent Document 1 and Patent Document 2, inclined portions are formed on both side surfaces of the winding insulating member on the tip end side in the insertion direction. Thereby, the insertion workability of the winding insulation member can be improved. However, when a winding insulation member having such a shape is used, as a holding mechanism for holding the winding insulation member, the winding insulation member on the tip side in the insertion direction as disclosed in Patent Document 1 A holding mechanism for holding the inclined portions formed on both side surfaces by an elastic force is used. In this case, it is difficult to stably hold the winding insulation member.
The present invention has been devised in view of such a point, and an object of the present invention is to provide a technique capable of improving the insertion workability and the holding property of the winding insulating member.

The first invention relates to a winding insulation member.
The winding insulation member of the present invention is preferably used for insulating the stator winding wound around the insulator mounted on the tooth and the yoke of the stator core, but various other uses. Aspects are possible.
The winding insulation member of the present invention is formed by bending an insulating film.
The insulating film is formed on one side and the other side along the first direction, and extends along the second direction intersecting the first direction with the first edge portion and the second edge portion, and along the second direction. It has a third edge and a fourth edge that are formed on one side and the other side and extend along the first direction. Typically, the second direction extends in a direction perpendicular to the first direction (including "substantially right angles"). The one side and the other side in the first direction and the one side and the other side in the second direction are appropriately defined. Further, typically, in a state where the winding insulation member is attached to the stator, the first direction extends along the axial direction of the stator, and the second direction is along the circumferential direction of the stator. Is extended.
The third edge portion has a first end portion, a first inclined portion, a first central portion, a second inclined portion, and a second end portion in the direction from the first edge portion to the second edge portion. The first inclined portion is inclined so that the end portion on the first central portion side is arranged on one side in the second direction from the end portion on the first end portion side. Further, the second inclined portion is inclined so that the end portion on the first central portion side is arranged on one side in the second direction from the end portion on the second end portion side. Typically, the first end portion, the first central portion and the second end portion are formed so as to extend parallel to the first direction (including "substantially parallel"). The first inclined portion and the second inclined portion can be composed of one or more inclined portions. When the first inclined portion is composed of a plurality of inclined portions, the "end of the first inclined portion on the first central portion side" is "an inclined portion formed on the most opposite side along the first direction.""The end of the portion on the first central portion side" is shown, and "the end of the first inclined portion on the first end portion side" is "the inclined portion formed on the most one side along the first direction". The end portion on the first end portion side of the above. Further, when the second inclined portion is composed of a plurality of inclined portions, the "end portion of the second inclined portion on the first central portion side" is formed on the "most one side along the first direction". "The end of the inclined portion on the first central portion side" is shown, and "the end of the second inclined portion on the second end portion side" is formed on the "most opposite side along the first direction". "The end of the inclined portion on the second end portion side" is shown.
The insulating film is formed by the first to third bent portions extending along the second direction, by the first divided portion defined by the first edge portion and the first bent portion, and by the first bent portion and the second bent portion. It is divided into a defined second divided portion, a third divided portion defined by a second bent portion and a third bent portion, and a fourth divided portion defined by a third bent portion and a second edge portion.
The first bent portion is set to pass through the connecting portion between the first inclined portion and the first central portion, the second bent portion is set to pass through the center of the first central portion, and the third bent portion is set. , It is set to pass through the connecting portion between the first central portion and the second inclined portion.
The first to fourth divided portions are bent along the first to third bent portions. The second divided portion and the third divided portion are bent in a V shape along the second bent portion. Further, the first divided portion is bent along the first bent portion on the opposite side of the V-shaped opening, and the fourth divided portion is formed with the V-shaped opening along the third bent portion. It is bent to the other side.
With the winding insulation member of the present invention, the stator winding and the stator core can be insulated, and adjacent stator windings can be insulated.
In the winding insulation member of the present invention, a first inclined portion is formed on one side of the third edge portion in the first direction, and a second inclined portion is formed on the other side in the first direction. As a result, the winding insulation member can be easily inserted. Further, the first end portion of the third edge portion is formed on one side in the first direction from the first inclined portion, and the second end portion is formed on the other side in the first direction from the second inclined portion. As a result, the positions of the winding insulation member in the circumferential direction and the axial direction can be reliably regulated.
In another aspect of the first invention, the fourth edge portion is the third end portion, the third inclined portion, the second central portion, the fourth inclined portion, and the fourth in the direction from the first edge portion to the second edge portion. Has an end portion. The third inclined portion is inclined so that the end portion on the second central portion side is arranged on one side in the second direction from the end portion on the third end portion side. Further, the fourth inclined portion is inclined so that the connecting portion with the second central portion is arranged on one side in the second direction from the connecting portion with the fourth end portion. The first bent portion passes through the connecting portion between the third inclined portion and the second central portion, the second bent portion passes through the center of the second central portion, and the third bent portion passes through the fourth inclined portion and the second. It passes through the connection with the central part.
In the winding insulation member of this embodiment, the third end portion of the fourth edge portion is formed on one side in the first direction from the second inclined portion, and the fourth end portion is formed on the other side in the first direction from the fourth inclined portion. It is formed. As a result, the positions of the winding insulation member in the circumferential direction and the axial direction can be regulated more reliably. Further, it is possible to reduce the material loss when cutting the insulating sheet to form the winding insulating member.
In another aspect of the first invention, the fourth edge portion is the third end portion, the third inclined portion, the second central portion, the fourth inclined portion, and the fourth in the direction from the first edge portion to the second edge portion. Has an end portion. The third inclined portion is inclined so that the end portion on the second central portion side is arranged on the other side in the second direction from the end portion on the third end portion side. Further, the fourth inclined portion is inclined so that the end portion on the second central portion side is arranged on the other side in the second direction from the end portion on the fourth end portion side. The first bent portion passes through the connecting portion between the third inclined portion and the second central portion, the second bent portion passes through the center of the second central portion, and the third bent portion passes through the fourth inclined portion and the second. It passes through the connection with the central part.
In the winding insulation member of this embodiment, the third end portion of the fourth edge portion is formed on one side in the first direction from the third inclined portion, and the fourth end portion is formed on the other side in the first direction from the fourth inclined portion. It is formed. As a result, the positions of the winding insulation member in the circumferential direction and the axial direction can be regulated more reliably. Further, since the winding insulation member can be inserted from the third edge portion side and the fourth edge portion side, the insertion workability can be further improved .

The second invention relates to a stator. The stator of the present invention includes a stator core, an insulator, a stator winding, and a winding insulating member. Then, any of the above-mentioned winding insulation members is used as the winding insulation member.
In the stator of the present invention, the winding insulation member can be easily inserted, and the positions of the winding insulation member in the circumferential direction and the axial direction can be reliably regulated.
In another aspect of the second invention, the stator core comprises a yoke extending along the circumferential direction and a plurality of teeth extending radially inward from the yoke when viewed in a cross section perpendicular to the axial direction. have. Each tooth has a tooth base extending radially inward from the yoke, and a tooth tip provided on the radial inner peripheral side of the tooth base and extending along the circumferential direction.
The insulator is mounted on the teeth with the stator windings wound around it. The winding insulation member is arranged between the insulator and the yoke of the stator core.
In this embodiment, the winding insulating member can be easily inserted between the stator winding wound around the insulator mounted on the tooth and the yoke of the stator core, and the winding insulating member is circumferentially oriented. And the position along the axial direction can be reliably regulated.
In another aspect of the second invention, the stator core is composed of a first core member having a plurality of teeth and a second core member having a yoke.
In this embodiment, it is possible to improve the insertion workability and the holdability of the winding insulating member in the stator having the stator core having the divided structure.

The third invention relates to an electric motor. The motor of the present invention includes a stator and a rotor that can rotate relative to the stator. Then, one of the above-mentioned stators is used as the stator.
In the motor of the present invention, the winding insulation member can be easily inserted, and the positions of the winding insulation member in the circumferential direction and the axial direction can be reliably regulated.

In the winding insulation member, the stator, and the motor of the present invention, the workability of inserting the winding insulation member can be improved, and the holding property of the winding insulation member can be improved.

It is a perspective view of the 1st Embodiment of the stator of this invention. It is a figure which shows the schematic structure of the stator core which constitutes the 1st Embodiment of a stator. It is a perspective view of the 1st Embodiment of the insulator of this invention. FIG. 3 is a view seen from the direction of arrow IV. FIG. 3 is a view seen from the direction of arrow V. FIG. 3 is a view seen from the direction of arrow VI. It is a figure seen from the VII-VII line of FIG. It is a figure explaining the operation which attaches an insulator to a tooth. It is a perspective view of the 1st Embodiment of an insulating film. It is a development view of 1st Embodiment of an insulating film. It is a figure which shows an example of the manufacturing method of 1st Embodiment of an insulating film. It is a figure which shows the state which attached the 1st Embodiment of the insulating film by using the insulator of 1st Embodiment. It is a figure which shows the state which holds the 1st Embodiment of an insulating film in the 1st Embodiment of an insulator. It is a perspective view of the 2nd Embodiment of an insulating film. It is a development view of the 2nd Embodiment of an insulating film. It is a figure which shows the state which holds the 2nd Embodiment of an insulating film in the 1st Embodiment of an insulator. It is a figure which shows the state which the 2nd Embodiment of an insulating film is held in the modification example of the 1st Embodiment of an insulator. It is a perspective view of the 3rd Embodiment of an insulating film. It is a development view of the 3rd Embodiment of an insulating film. It is a figure which shows the state which holds the 3rd Embodiment of an insulating film in the 1st Embodiment of an insulator. It is a perspective view of the 2nd Embodiment of the stator of this invention. It is a figure which shows the schematic structure of the stator core which constitutes the 2nd Embodiment of a stator. It is a perspective view of the 2nd Embodiment of the insulator of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the present specification, the description "axial direction" refers to a rotation center line P passing through the rotation center of the rotor in a state where the rotor is rotatably arranged relative to the stator (FIGS. 1, FIG. 21) indicates the direction. The description "circumferential direction" refers to the circumferential direction centered on the rotation center line P when viewed in a cross section perpendicular to the axial direction in a state where the rotor is arranged so as to be rotatable relative to the stator. Is shown. The description "radial direction" indicates a direction passing through the rotation center line P when viewed in a cross section perpendicular to the axial direction in a state where the rotor is arranged so as to be rotatable relative to the stator. The description "diameter inner circumference side" indicates the rotation center line P side along the radial direction, and the description "diameter outer circumference side" indicates the side opposite to the rotation center line P along the radial direction.
For the insulator, the descriptions "axial direction", "circumferential direction", and "diameter direction" refer to "axial direction", "circumferential direction", and "circumferential direction" when the insulator is mounted on the stator core. Indicates "diameter direction".
Further, in the present specification, the descriptions "parallel", "right angle", and "flat" are used as including "substantially parallel", "substantially right angle", and "substantially flat", respectively.
Further, in the present specification, for convenience, the upper side and the lower side in FIG. 4 are described as "one side in the axial direction" and "the other side in the axial direction", respectively, and the right side and the left side in FIG. 4 are referred to as "circumferential directions", respectively. Although described as "one side" and "the other side in the circumferential direction", "one side" and "the other side" are not limited to this, and an appropriate direction can be selected.

1, a first embodiment of a stator constituting the motor of the present invention is shown. Note that FIG. 1 is a perspective view of the stator 100 of the first embodiment.
The stator 100 of the present embodiment is composed of a stator core 110, an insulator 200, a stator winding (not shown), and an insulating film 310.

The stator core 110 has core end faces 110A and 110B on both sides in the axial direction.
Further, the stator core 110 is configured as a stator core having a divided structure. In the present embodiment, the stator core 110 is composed of a first core member 120 and a second core member 130 as shown in FIG. Note that FIG. 2 shows a view of the first core member 120 and the second core member 130 as viewed from a direction perpendicular to the axial direction.
The first core member 120 (referred to as an “inner core”) is composed of a laminated body in which a plurality of electromagnetic steel sheets are laminated by using caulking protrusions 126. The first core member 120 has a plurality of teeth 121 extending along the radial direction and arranged apart from each other along the circumferential direction. The teeth 121 has a teeth base 122 extending along the radial direction and a teeth tip 123 provided on the inner peripheral side of the teeth base 122 in the radial direction and extending along the circumferential direction. The tooth tip portion 123 of the teeth 121 adjacent to each other in the circumferential direction is connected by a connecting portion 125.
The second core member 130 (referred to as an “outer core”) is composed of a laminated body in which a plurality of electromagnetic steel sheets are laminated by using caulking protrusions 136. The second core member 130 has a yoke 131 extending along the circumferential direction. The yoke 131 has a yoke outer peripheral surface 132 and a yoke inner peripheral surface 133. Further, it has a recess forming surface 134a recessed from the inner peripheral surface 133 of the yoke to the outer peripheral side in the radial direction. The concave portion forming surface 134a forms a concave portion 134 into which the end portion on the outer peripheral side in the radial direction of the teeth 121 (specifically, the teeth base portion 122) of the first core member 120 can be fitted. The yoke inner peripheral surface 133 has yoke inner peripheral surface portions 133a and 133b formed between two recesses 134 (recess forming surfaces 134a) adjacent to each other in the circumferential direction. In the yoke inner peripheral surface portions 133a and 133b, the thickness of the yoke 131 is such that the thickness of both recesses 134 is from the connection portion between the yoke inner peripheral surface portion 133a and the recess 134 and the connection portion between the yoke inner peripheral surface portion 133b and the recess 134, respectively. It is inclined so that it becomes thinner toward the center in the circumferential direction.
In the stator core 110, the end portion of the tooth base 122 of the first core member 120 on the side opposite to the tooth tip 123 (diameter outer peripheral side) is press-fitted (or shrink-fitted) into the recess 134 of the second core member 130. It is formed by cooling and fitting. That is, the stator core 110 has a yoke 131 extending along the circumferential direction and a plurality of teeth extending radially inward from the yoke 131 when viewed in a cross section perpendicular to the axial direction. 121 is provided, and the teeth 121 are provided on the radial inner peripheral side of the teeth base 122 extending radially from the yoke 131 on the radial inner peripheral side and extending along the circumferential direction. It has a tooth tip portion 123 that is present.
A tooth tip surface 124 is formed on the radial inner peripheral side of the tooth tip 123. The tooth tip surface 124 forms a rotor insertion space into which a rotor (not shown) is inserted.
The stator 100 and the rotor rotatably inserted into the rotor insertion space constitute the motor of the present invention.

The stator winding (not shown) is wound around an insulator mounted on the teeth 121. That is, the stator winding is wound around the teeth 121 by a centralized winding method. As a method of winding the stator winding around the tooth 121, a method of winding the stator winding around the insulator with the insulator attached to the tooth 121, or a method of winding the stator winding around the insulator. In this state, a method of mounting the insulator on the teeth 121 can be used.

The first embodiment of the insulator mounted on the teeth 121 will be described with reference to FIGS. 3 to 7. FIG. 3 is a perspective view of the insulator 200 of the first embodiment. 4 is a view of FIG. 3 viewed from the direction of arrow IV, FIG. 5 is a view of FIG. 3 viewed from the direction of arrow V, and FIG. 6 is a view of FIG. 3 viewed from the direction of arrow VI. FIG. 7 is a view of FIG. 3 as viewed from line VII-VII.

The insulator 200 (called "resin bobbin") is formed of a resin having insulating properties, for example, polybutylene terephthalate (PBT) resin, polyphenylene sulfide (PPS) resin, liquid crystal polymer (LCP) resin, nylon, or the like. Will be done.
The insulator 200 has a first flange portion 210, a second flange portion 220, a body portion 230, and a through hole 240.
The first flange portion 210 extends along the axial direction (vertical direction in FIG. 4) and the circumferential direction (horizontal direction in FIG. 4), and has an outer peripheral surface 210A on the radial outer peripheral side (paper surface front side in FIG. 4). The inner peripheral surface 210B on the inner peripheral side in the radial direction (the back side of the paper in FIG. 4), the end surface 211 on one side in the axial direction (upper side in FIG. 4), the end surface 212 on the other side in the axial direction (lower side in FIG. 4), and one in the circumferential direction. It has a side surface 213 on the side (right side in FIG. 4) and a side surface 214 on the other side in the circumferential direction (left side in FIG. 4).
The second flange portion 220 is arranged on the inner peripheral side in the radial direction from the first flange portion 210, extends along the axial direction and the circumferential direction, and has an outer peripheral surface 220A on the outer peripheral side in the radial direction and an inner peripheral side in the radial direction. It has an inner peripheral surface 220B, an end surface 221 on one side in the axial direction, an end surface 222 on the other side in the axial direction, a side surface 223 on one side in the circumferential direction, and a side surface 224 on the other side in the circumferential direction.
The body portion 230 is provided between the first flange portion 210 and the second flange portion 220, and extends along the radial direction.
The through hole 240 is formed so as to extend in the radial direction and the axial direction inside the body portion 230, and opens to the outer peripheral surface 210A of the first flange portion 210 and the inner peripheral surface 220B of the second flange portion 220. ing.

The outer peripheral surface 210A, inner peripheral surface 210B, end surface 211, end surface 212, side surface 213, and side surface 214 of the first flange portion 210 are the "first outer peripheral surface", "first inner peripheral surface", and "first" of the present invention, respectively. Corresponds to "end face", "second end face", "first side surface" and "second side surface".
Further, the outer peripheral surface 220A, inner peripheral surface 220B, end surface 221 and end surface 222, side surface 223 and side surface 224 of the second flange portion 220 are the "second outer peripheral surface", "second inner peripheral surface", and "second inner peripheral surface" of the present invention, respectively. Corresponds to "third end face", "fourth end face", "third side surface" and "fourth side surface".

The through hole 240 is formed by inner wall surfaces 241 to 244. In the present embodiment, as shown in FIG. 8, when the end portion of the tooth base portion 122 is inserted into the through hole 240 from the second flange portion 220 side, the outer wall surfaces 122a, 122b, 122c of the tooth base portion 122 are inserted. And 122d are inserted so as to face the inner wall surfaces 241, 242, 243 and 244 of the through hole 240, respectively.
The inner wall surfaces 241, 242, 243 and 244 of the through hole 240 have inclined surfaces 241a, 242a, 243a and 244a on the inner peripheral surface 220B side of the second flange portion 220. As a result, the tooth base 122 (teeth 121) can be easily inserted into the through hole 240 of the insulator 200 while preventing the insulator 200 from being displaced in the axial direction and the circumferential direction with respect to the tooth base 122 (teeth 121). it can.

The first flange portion 210 is provided with protrusions 250, 260 and 270 protruding from the outer peripheral surface 210A toward the outer peripheral side in the radial direction. In the present embodiment, the outer peripheral surface 210A is formed on a flat surface extending along the circumferential direction and the axial direction.

The protrusion 250 is provided on the end face 212 side with respect to the through hole 240.
The protrusion 250 has an outer wall surface 251 on the end surface 212 side (the other side in the axial direction) and an outer wall surface 252 on the through hole 240 side (one side in the axial direction). The outer wall surface 251 is formed on an inclined surface in which the distance from the outer peripheral surface 210A becomes longer from the end surface 212 side toward the through hole 240 side. Due to the inclination of the outer wall surface 251 of the protrusion 250, the end of the tooth base 122 that is inserted into the through hole 240 of the insulator 200 and protrudes from the through hole 240 (from the outer peripheral surface 210A of the first flange portion 210). When the portion is press-fitted into the recess 134 of the second core member 130, the end portion of the tooth base 122 is easily guided into the recess 134.
The protrusion 250 corresponds to the "guide protrusion" of the present invention, and the outer wall surface 251 of the protrusion 250 corresponds to the "guide surface" of the present invention.

The protrusion 260 is provided in a region on the end face 211 side (one side in the axial direction) and the side surface 213 side (one side in the circumferential direction) from the through hole 240.
The protrusion 260 is formed on the outer peripheral side in the radial direction and extends along the circumferential direction and the axial direction 261 and the outer wall surface 262 formed on the other side in the axial direction and extends along the circumferential direction. The outer wall surface 264 is formed on one side (opposite the protrusion 270) and extends along the axial direction, and is formed on the other side in the circumferential direction (the side facing the protrusion 270) and extends along the axial direction. It has an outer wall surface 263. The outer wall surface of the protrusion 260 on one side in the axial direction is formed by the end surface 211 of the first flange portion 210 (in flush with the end surface 211).
The outer wall surface 264 has a first outer wall surface portion 264a, a second outer wall surface portion 264b, a third outer wall surface portion 264c, a fourth outer wall surface portion 264d, and a fifth outer wall surface portion from one side in the axial direction to the other side in the axial direction. It has a portion 264e.
In the present embodiment, the first outer wall surface portion 264a and the fifth outer wall surface portion 264e extend in parallel in the axial direction, and the second outer wall surface portion 264b and the third outer wall surface portion 264c are from the dark portion on the side surface 213. The fourth outer wall surface portion 264d extends in an inclined shape with respect to the axial direction and the circumferential direction, and extends parallel to the circumferential direction (perpendicular to the axial direction). The second outer wall surface portion 264b is arranged so that the end portion on the first outer wall surface portion 264a side is arranged on one side in the axial direction and the other side in the circumferential direction from the end portion on the third outer wall surface portion 264c side (side surface 213 side). It is inclined to. The first outer wall surface portion 264a and the second outer wall surface portion 264b form a notch 265 recessed from the side surface 213 and the end surface 211. Further, in the third outer wall surface portion 264c, the end portion on the fourth outer wall surface portion 264d side is arranged on the other side in the axial direction and the other side in the circumferential direction from the end portion on the second outer wall surface portion 264b side (side surface 213 side). It is tilted so as to. The third outer wall surface portion 264c, the fourth outer wall surface portion 264d, and the fifth outer wall surface portion 264e form a notch portion 266 forming a part of the recess 280 described later.

The protrusion 270 is provided in a region on the end face 211 side (one side in the axial direction) and the side surface 214 side (the other side in the circumferential direction) from the through hole 240.
The protrusion 270 is formed on the outer peripheral side in the radial direction and extends along the circumferential direction and the axial direction, and the outer wall surface 271 is formed on the other side in the axial direction and extends along the circumferential direction. An outer wall surface 273 formed on one side (the side facing the protrusion 260) and extending along the axial direction, and formed on the other side in the circumferential direction (opposite the protrusion 260) and extending along the axial direction. It has an outer wall surface 274 to be used. The outer wall surface of the protrusion 270 on one side in the axial direction is formed by the end surface 211 of the first flange portion 210 (in flush with the end surface 211).
The outer wall surface 274 has a first outer wall surface portion 274a, a second outer wall surface portion 274b, a third outer wall surface portion 274c, a fourth outer wall surface portion 274d, and a fifth outer wall surface portion from one side in the axial direction to the other side in the axial direction. It has a portion 274e.
In the present embodiment, the first outer wall surface portion 274a and the fifth outer wall surface portion 274e extend in parallel in the axial direction, and the second outer wall surface portion 274b and the third outer wall surface portion 274c are end portions on the side surface 214. The fourth outer wall surface portion 274d extends in an oblique shape with respect to the axial direction and the circumferential direction, and extends parallel to the circumferential direction (perpendicular to the axial direction). In the second outer wall surface portion 274b, the end portion on the first outer wall surface portion 274a side is arranged on one side in the axial direction and one side in the circumferential direction from the end portion on the third outer wall surface portion 274c side (side surface 214 side). It is inclined to. The first outer wall surface portion 274a and the second outer wall surface portion 274b form a notch 275 recessed from the side surface 214 and the end surface 211. Further, in the third outer wall surface portion 274c, the end portion on the fourth outer wall surface portion 274d side is arranged on the other side in the axial direction and the one side in the circumferential direction from the end portion on the second outer wall surface portion 274b side (side surface 214 side). It is tilted so as to. The third outer wall surface portion 274c, the fourth outer wall surface portion 274d, and the fifth outer wall surface portion 274e form a notch 276 that forms a part of the recess 290 described later.
Further, a locking protrusion 277 that protrudes from the first outer wall surface portion 274a of the protrusion 270 to the other side in the circumferential direction is provided. The locking protrusion 277 has a protrusion 278 protruding outward in the axial direction at the end on the other side in the circumferential direction.
The locking protrusion 277 fixes the end of the stator winding, as described below. Further, the notches 265 and 275 secure a working space for fixing the end portion of the stator winding.

Further, the first flange portion 210 is provided with a recess 280 and a recess 290 recessed from the outer peripheral surface 210A to the inner peripheral side in the radial direction.
The recess 280 is provided on the side surface 213 side (one side in the circumferential direction) with respect to the through hole 240, and is open on one side in the circumferential direction (side surface 213 side) and the outer peripheral side in the radial direction. The recess 280 is formed by a bottom surface 281, a first wall surface and a second wall surface provided on one side in the axial direction and the other side in the axial direction of the bottom surface 281, and a third wall surface provided on the other side in the circumferential direction of the bottom surface 281. It is formed.
The bottom surface 281 of the recess 280 extends along the axial and circumferential directions. In this embodiment, the bottom surface 281 is formed on a flat surface.
The first wall surface of the recess 280 on one side in the axial direction is formed by the third outer wall surface portion 264c and the fourth outer wall surface portion 264d of the protrusion 260. In the present embodiment, the fourth outer wall surface portion 264d extends parallel to the circumferential direction, and the third outer wall surface portion 264c extends in an inclined shape with respect to the circumferential direction and the axial direction.
The second wall surface of the recess 280 on the other side in the axial direction is formed by a wall surface 282 extending along the circumferential direction. In the present embodiment, the wall surface 282 extends parallel to the circumferential direction.
The third wall surface on the other side in the circumferential direction of the recess 280 is formed by a wall surface 283 extending along the axial direction and a fifth outer wall surface portion 264e of the protrusion 260. In the present embodiment, the wall surface 283 and the fifth outer wall surface portion 264e extend parallel to each other in the axial direction.
The recess 280 regulates the positions of the portion of the insulating film on the other side in the circumferential direction, which will be described later, in the circumferential direction and the axial direction.

The recess 290 is provided on the side surface 214 side (the other side in the circumferential direction) with respect to the through hole 240, and the other side in the circumferential direction (the side surface 214 side) and the radial outer peripheral side are open. The recess 290 is formed by the bottom surface 291 and the first wall surface and the second wall surface provided on one side in the axial direction and the other side in the axial direction of the bottom surface 291 and the third wall surface provided on one side in the circumferential direction of the bottom surface 281. It is formed.
The bottom surface 291 of the recess 290 extends along the axial and circumferential directions. In this embodiment, the bottom surface 291 is formed on a flat surface.
The first wall surface of the recess 290 on one side in the axial direction is formed by the third outer wall surface portion 274c and the fourth outer wall surface portion 274d of the protrusion 270. In the present embodiment, the fourth outer wall surface portion 274d extends parallel to the circumferential direction, and the third outer wall surface portion 274c extends in an inclined shape with respect to the circumferential direction and the axial direction.
The second wall surface of the recess 290 on the other side in the axial direction is formed by a wall surface 292 extending along the circumferential direction. In the present embodiment, the wall surface 292 extends parallel to the circumferential direction.
The third wall surface on one side in the circumferential direction of the recess 290 is formed by a wall surface 293 extending along the axial direction and a fifth outer wall surface portion 274e of the protrusion 270. In the present embodiment, the wall surface 293 and the fifth outer wall surface portion 274e extend parallel to each other in the axial direction.
The recess 290 regulates the positions of the portion of the insulating film on one side in the circumferential direction, which will be described later, in the circumferential direction and the axial direction.

The protrusion 260 corresponds to the "first protrusion" of the present invention, the protrusion 270 corresponds to the "second protrusion" of the present invention, and the recess 280 corresponds to the "first position regulating portion" of the present invention. Alternatively, it corresponds to the "first recess", and the recess 290 corresponds to the "second position regulating portion" or the "second recess" of the present invention.
The third outer wall surface portion 264c and the fourth outer wall surface portion 264d of the protrusion 260 constitute the "first wall surface of the first position regulating portion" or the "first concave portion forming surface of the first recess" of the present invention, and the wall surface is formed. The 282 constitutes the "second wall surface of the first position regulating portion" or the "second concave portion forming surface of the first recess", and the wall surface 283 and the fifth outer wall surface portion 264e of the protrusion 260 constitute the present invention. The "third wall surface of the first position regulating portion" or the "third concave portion forming surface of the first concave portion" is configured.
The fourth outer wall surface portion 264d of the protrusion 260 corresponds to the "first wall surface first portion of the first position regulating portion" or the "first recess forming surface first portion of the first recess" of the present invention, and the protrusion The third outer wall surface portion 264c of 260 corresponds to the "first wall surface second portion of the first position regulating portion" or the "first concave portion forming surface second portion of the first recess" of the present invention.
The third outer wall surface portion 274c and the fourth outer wall surface portion 274d of the protrusion 270 constitute the "fourth wall surface of the second position regulating portion" or the "four concave portion forming surface of the second recess" of the present invention, and the wall surface. The 292 constitutes the "fifth wall surface of the second position regulating portion" or the "fifth concave portion forming surface of the second recess", and the wall surface 293 and the fifth outer wall surface portion 274e of the protrusion 270 constitute the present invention. The "sixth wall surface of the second position regulating portion" or the "sixth recess forming surface of the second recess" is configured.
The fourth outer wall surface portion 274d of the protrusion 270 corresponds to the "first portion of the fourth wall surface of the second position regulating portion" or the "first portion of the fourth recess forming surface of the second recess" of the present invention. The third outer wall surface portion 274c of the 270 corresponds to the "second portion of the fourth wall surface of the second position regulating portion" or the "second portion of the fourth recessed forming surface of the second recess" of the present invention.

Further, the side surface 213 on one side in the circumferential direction of the first flange portion 210 has side surface portions 213a and 213b from the other side in the axial direction to the one side in the axial direction. The side surface portion 213b is formed in the region corresponding to the recess 280 and has a thickness thinner than the thickness of the side surface portion 213a.
Further, the side surface 214 on the other side in the circumferential direction of the first flange portion 210 has side surface portions 214a, 214b, 214c and 214d from the other side in the axial direction to the one side in the axial direction. The side surface portions 214b, 214c and 214d are formed in the region corresponding to the recess 290 and have a thickness thinner than the thickness of the side surface portion 214a. Further, the side surface portion 214b extends in the same direction as the extending direction of the side surface portion 214a, and the side surface portions 214c and 214e extend in an inclined shape with respect to the extending direction of the side surface portion 214b (214a). .. In the present embodiment, the side surface portion 214b is inclined so that the end portion on the side surface portion 214c side is arranged on one side in the axial direction and one side in the circumferential direction from the end portion on the side surface portion 214a side. Further, the side surface portion 214d is inclined so that the end portion on the side surface portion 214c side is arranged on the other side in the axial direction and the one side in the circumferential direction from the end portion on the side opposite to the side surface portion 214c. The side surface portions 214c and 214d form a recess 215 recessed on one side in the circumferential direction on the side surface 214. The side surface portion 214b and the recess 215 will be described later.

Further, the second flange portion 220 is provided with a protrusion protruding from the inner peripheral surface 220B to the inner peripheral side in the radial direction on one side in the axial direction. As a result, the side surface 223 of the second flange portion 220 has a side surface portion 223a and a side surface portion 223b thicker than the side surface portion 223a, and the side surface 224 has a side surface portion 224a and a side surface portion 224b thicker than the side surface portion 224a. ing. A stepped surface 225 is formed between the side surface portions 223a and 223b and between the side surface portions 224a and 224b.
Further, a protrusion 225 protruding from the end surface 221 of the second flange portion 220 to one side in the axial direction is provided. The protrusion 225 has a protrusion 226 that projects to the inner peripheral side in the radial direction.

Next, the operation of assembling the first core member 120 and the second core member 130 will be described.
First, the insulator 200 is attached to the teeth 121 (teeth base 122) of the first core member 120. In the present embodiment, as shown in FIG. 8, the end portion of the tooth base portion 122 of the teeth 121 is inserted into the through hole 240 of the insulator 200 from the second flange portion 220 side. At this time, the end portion of the tooth base 122 is guided into the through hole 240 by the inclined surfaces 241a to 244a on the inner peripheral side in the radial direction of the inner wall surfaces 241 to 244 forming the through hole 240. The teeth base 122 is inserted so that the end portion of the teeth base 122 protrudes from the outer peripheral surface 210A of the first flange portion 210.
Then, the stator winding is wound around the teeth 121 of the first core member 120 with the insulator 200 attached. In the present embodiment, the stator winding is wound around the space formed by the first flange portion 210, the second flange portion 220, and the body portion 230 of the insulator 200.
Regarding the mounting of the insulator 200 and the winding of the stator winding 610, a method of mounting the insulator 200 on the teeth 121 of the first core member 120 with the stator winding wound around the insulator 200 is used. You can also do it.

Then, the insulator 200 is mounted on the teeth 121, and the first core member 120 and the second core member 130 are assembled in a state where the stator winding is wound around the insulator 200. In the present embodiment, the end of the tooth base 122, which is inserted into the through hole 240 of the insulator 200 and protrudes from the outer peripheral surface 210A of the first flange 210, is formed on the yoke 131 of the second core member 130. The first core member 120 and the second core member 130 are assembled by press-fitting into the recess 134.
In the present embodiment, when the end portion of the tooth base 122 inserted into the through hole 240 of the insulator 200 is press-fitted into the recess 134 of the second core member 130 while moving along the axial direction, the end face from the through hole 240. The end of the tooth base 122 is guided into the recess 134 by the outer wall surface 251 of the protrusion 250 formed on the 212 side (the other side in the axial direction). As a result, it is possible to prevent the first core member 120 or the insulator 200 from coming into contact with the second core member 130 with a strong force, and the first core member 120 or the second core member 130 is deformed or insulated. It is possible to prevent cracks from occurring in the body 200.
Further, as a method of press-fitting the end portion of the tooth base portion 122 into the recess 134 of the second core member 130, an axial direction of the tooth base portion 122 protruding from the outer peripheral surface 210A of the first flange portion 210 is used by using a press-fitting jig. A method can be used in which a force is applied to the wall surface 122a on one side to move the end portion of the tooth base portion 122 in the direction of insertion into the recess 134.
At this time, if the end portion of the tooth base 122 swells in the circumferential direction and the radial direction due to the force applied by the press-fitting jig, the press-fitting operation becomes difficult. Therefore, it is necessary to apply a force to an appropriate portion of the end portion of the tooth base 122 by using a press-fitting jig of an appropriate size. In the present embodiment, a movement path of the press-fitting jig is formed in the first flange portion 210 on the end surface 211 side of the through hole 240 by the outer wall surface portion 263 of the protrusion 260 and the outer wall surface portion 273 of the protrusion 270. There is. As a result, the end portion of the tooth base portion 122 can be press-fitted into the recess 134 of the second core member 130 while preventing the end portion of the tooth base portion 122 from being deformed.
The outer wall surface portion 263 of the protrusion 260 corresponds to the "path forming surface of the first protrusion" of the present invention, and the outer wall surface portion 273 of the protrusion 270 corresponds to the "path forming surface of the second protrusion" of the present invention. Corresponding to, the "moving path of the press-fitting jig" of the present invention is formed by the outer wall surface portion 263 of the protrusion 260 and the outer wall surface portion 273 of the protrusion 270.

Next, an insulating film that insulates the stator winding wound around the insulator 200 and the yoke 131 of the stator core will be described. The insulating film is arranged between the insulator 200 and the yoke 131. The insulating film is preferably formed of a resin having insulating properties, for example, a polyethylene terephthalate resin or a polyethylene naphthalate resin.
The insulating film may be arranged so as to be able to insulate between the stator winding wound around the insulator 200 and the yoke 131, and the entire insulating film is the insulator 200 and the yoke 131. It does not have to be placed between. That is, at least a part of the insulating film may be arranged between the insulator 200 and the yoke 131.

The first embodiment of the insulating film will be described with reference to FIGS. 9 and 10. FIG. 9 is a perspective view of the insulating film 310, and FIG. 10 is a developed view of the insulating film 310.
The A , B, and C directions orthogonal to each other shown in FIG. 9 are axial and circumferential in a state where the insulating film 310 is inserted and held between the insulator 200 and the yoke 131. It extends substantially parallel to the direction and radial direction.
The A direction , the B direction , and the C direction correspond to the "first direction", the "second direction intersecting the first direction", and the "third direction intersecting the first direction and the second direction" of the present invention, respectively. ..

The insulating film 310 of the first embodiment is formed by bending the plate-shaped insulating film 320 shown in FIG.
The insulating film 320 is formed on one side in the B direction and the other side in the B direction, and is formed on the edge portion 321 and the edge portion 322 extending along the A direction, and on one side in the A direction and the other side in the A direction, and is formed in the B direction. It has an edge 323 and an edge 324 extending along.
The edge portion 323 has a first end portion 323a, a first inclined portion 323b, a central portion 323c, a second inclined portion 323d, and a second end portion 323e from one side in the B direction to the other side in the B direction. .. In the present embodiment, the first end portion 323a, the central portion 323c and the second end portion 323e extend parallel to the B direction, and the first inclined portion 323b and the second inclined portion 323d extend in the A direction and the B direction. On the other hand, it extends in an inclined manner. The first inclined portion 323b is inclined so that the end portion on the central portion 323c side is arranged on one side in the A direction and the other side in the B direction from the end portion on the first end portion 323a side. The second inclined portion 323d is inclined so that the end portion on the central portion 323c side is arranged on one side in the A direction and one side in the B direction from the end portion on the second end portion 323e side.
The edge portion 324 has a first end portion 324a, a first inclined portion 324b, a central portion 324c, a second inclined portion 324d, and a second end portion 324e from one side in the B direction to the other side in the B direction. .. In the present embodiment, the first end portion 324a, the central portion 324c, and the second end portion 324e extend parallel to the B direction, and the first inclined portion 324b and the second inclined portion 324d extend in the A direction and the B direction. On the other hand, it extends in an inclined manner. The first inclined portion 324b is inclined so that the end portion on the central portion 324c side is arranged on one side in the A direction and the other side in the B direction from the end portion on the first end portion 324a side. The second inclined portion 324d is inclined so that the end portion on the central portion 324c side is arranged on one side in the A direction and one side in the B direction from the end portion on the second end portion 324e side.

The insulating film 310 is formed by bending the plate-shaped insulating film 320 shown in FIG. 10 along the bent portions L1 to L3.
In the present embodiment, the bent portion L1 is set to pass through the center of the central portion 323c of the edge portion 323 (the center of the central portion 324c of the edge portion 324). The bent portion L2 is set so as to pass through a connection point between the first inclined portion 323b of the edge portion 323 and the central portion 323c (the connecting point between the first inclined portion 324b of the edge portion 324 and the central portion 324c). The bent portion L3 is set so as to pass through the connection point between the central portion 323c of the edge portion 323 and the second inclined portion 323d (the connection point between the central portion 424c of the edge portion 324 and the second inclined portion 324d).
As shown in FIG. 9, the insulating film 310 obtained by bending the plate-shaped insulating film 320 along the bent portions L1 to L3 is formed by the first divided portion 310A to the fourth divided portion 310D, and has a cross section of T. It has a character shape.
That is, the second divided portion 310B divided by the bent portions L1 and L2 and the third divided portion 310C divided by the bent portions L1 and L3 are bent in a V shape along the bent portions L1. Further, the first divided portion 310A divided by the edge portion 321 and the bent portion L2 is bent along the bent portion L2 on the side opposite to the V-shaped opening. Further, the third divided portion 310D divided by the edge portion 322 and the bent portion L3 is bent along the bent portion L3 on the side opposite to the V-shaped opening.
The folded insulating film 310 has edges 311 and 312 extending along the A direction and edges 313 and 314 extending along the B direction. The edge portion 313 has a first end portion 313a, a first inclined portion 313b, a central portion 313c (central portion first portion 313c1, central portion second portion 313c2), a second inclined portion 313c, and a second end portion 313e. ing. The edge portion 314 has a first end portion 314a, a first inclined portion 314b, a central portion 314c (central portion first portion 314c1, central portion second portion 314c2), a second inclined portion and a second end portion 314e. There is.

The insulating film 310 corresponds to the "winding insulation member" of the present invention.
The edges 311, 312, 313 and 314 correspond to the "first edge", "second edge", "third edge" and "fourth edge" of the present invention, respectively. Further, the first end portion 313a, the first inclined portion 313b, the central portion 313c, the central portion first portion 313c1, the central portion second portion 313c2, the second inclined portion 313d, and the second end portion 313e of the edge portion 313, respectively. "First end portion", "first inclined portion", "first central portion", "first central portion first portion", "first central portion second portion", "second inclined portion" of the present invention And corresponds to the "second end". Further, the first end portion 314a, the first inclined portion 314b, the central portion 314c, the central portion first portion 314c1, the central portion second portion 314c2, the second inclined portion 314d, and the second end portion 314e of the edge portion 314, respectively. "Third end portion", "third inclined portion", "second central portion", "second central portion first portion", "second central portion second portion", "fourth inclined portion" of the present invention And corresponds to the "fourth end".
The bent portions L2, L1 and L3 correspond to the "first bent portion", the "second bent portion" and the "third bent portion" of the present invention, respectively. The first division portion 310A to the fourth division portion 310D correspond to the "first division portion" to the "fourth division portion" of the present invention.

In the insulating fill 310 of the present embodiment, the edge portion 313 on one side in the A direction is formed in a protruding shape in which the central portion 313c (313c1, 313c2) protrudes to one side in the A direction, and the edge portion 314 on the other side in the A direction. Is formed in a concave shape in which the central portion 314c (314c1, 314c2) is recessed on one side in the A direction.
Therefore, as shown in FIG. 11, the material loss is reduced when the insulating sheet 330 moving in the direction of the arrow is cut by the cutting blade 340 to form the plate-shaped insulating film 320. Can be done. That is, cutting is performed using a cutting blade 340 provided with a blade 324 (blade portion 324a to 324f) having a shape corresponding to the shape of the edge portion 323 (323a to 323e) and the edge portion 324 (324a to 324e) of the insulating film 320. As a result, unnecessary parts (material loss) are reduced.

As shown in FIG. 12, the insulating film 310 is inserted between the insulator 200 and the yoke 131 in a state where the first core member 120 and the second core member 130 are assembled. At this time, the insulating film 310 is inserted so that the edge portion 311 is arranged on one side in the circumferential direction and the edge portion 312 is arranged on the other side in the circumferential direction.
In the present embodiment, the edge portion 313 is on the end face 212 side (shaft) of the first flange portion 210 of the insulator 200 in a state where the insulating film 310 is elastically deformed so that the distance between the edge portion 311 and the edge portion 312 is shortened. It is inserted from the other side in the direction), that is, from the side where the protrusions 260 and 270 are not provided. At this time, the V-shaped second divided portion 310B and the third divided portion 310C of the insulating film 310 are inserted between the stator windings of different phases in the slot.
Then, when the insertion of the insulating film 310 is completed, the force applied to the insulating film 310 is released to elastically restore the insulating film 310. As a result, as shown in FIG. 12, the first divided portion 310A on the edge 311 side (one side in the B direction) of the insulating film 310 is adjacent to the two insulators 200 in the circumferential direction (specifically, the circumference). Of the two insulators 200) attached to each of the two teeth 121 adjacent in the direction, the insulator 200 is arranged in the recess 290 of the insulator 200 arranged on one side in the circumferential direction, and is arranged on the edge 312 side (the other in the B direction). The fourth divided portion 310D on the side) is arranged in the recess 280 of the insulator 200 arranged on the other side in the circumferential direction of the two insulators 200 adjacent in the circumferential direction.
At this time, the movement of the insulating film 310 to one side in the circumferential direction is restricted by the edge portion 311 coming into contact with the wall surface 293 forming the recess 290 of the insulator 200 and the fifth outer wall surface portion 274e of the protrusion 270. To. Also, the position of the insulating film 310 on the other side in the circumferential direction is. The edge portion 312 is regulated by abutting the wall surface 283 forming the recess 280 of the insulator 200 and the fifth outer wall surface portion 264e of the protrusion 260. Further, when the insulating film 310 is moved to one side in the axial direction, the first end portion 313a and the first inclined portion 313b of the edge portion 313 have the fourth outer peripheral surface portion 274d and the third outer circumference of the protrusion 270 of the insulator 200. By abutting on the surface portion 274c, or by having the second end portion 313e and the second inclined portion 313d of the edge portion 313 contact the fourth outer peripheral surface portion 264d and the third outer peripheral surface portion 264c of the protrusion 260 of the insulator 200. It is regulated by contact. Further, the movement of the insulating film 310 to the other side in the axial direction is carried out by the first end portion 324a of the edge portion 314 abutting on the wall surface 292 forming the recess 290 of the insulator 200, or by the abutment of the edge portion 314. The two-end portion 324e is regulated by abutting the wall surface 282 forming the recess 280.
The movement of the insulating film 310 to one side in the circumferential direction is also restricted by the first inclined portion 313b of the edge portion 313 coming into contact with the third outer wall surface portion 274c of the protrusion 270, and the movement of the insulating film 310 in the circumferential direction. The movement to the other side is also restricted by the second inclined portion 313d of the edge portion 313 coming into contact with the third outer wall surface portion 264c of the protrusion 260.
Further, on the side surface 214 of the insulator 200, a recess 215 recessed on the through hole 240 side (one side in the circumferential direction) is formed by the side surface portions 214c and 214d. As a result, the movement of the insulating film 310 to the other side in the axial direction is restricted by the portion of the edge portion 314 of the insulating film 310 near the bent portion L1 coming into contact with the side surface portion 214c of the insulator 200.
Thereby, the positions in the circumferential direction and the axial direction of the insulating film 310 having the first inclined portion 313b and the second inclined portion 313d for improving the insertion workability can be surely regulated.
The arrangement position and inclination angle of the side surface portion 214c of the insulator 200 are set so that the movement of the edge portion 314 of the insulating film 310 along the axial direction can be regulated by the side surface portion 214c.
The insulating film 310 of the present embodiment has a function of insulating the stator winding wound around the insulator 200 and the yoke 131, and insulates between the stator windings of different phases housed in the slot. It has an interphase insulation function.

A second embodiment of the insulating film will be described with reference to FIG.
The insulating film 350 of the second embodiment is formed by bending the plate-shaped insulating film 360 shown in FIG.
The insulating film 350 of the second embodiment has the same configuration as the insulating film 310 of the first embodiment except for the shape of the edge portion 354 on the other side in the A direction.
In addition, in FIGS. 14 and 15, the reference numerals given to the respective components shown in FIGS. 9 and 10 and the components having the same reference numerals other than the second digit have the same components. Shown.
The edge portion 364 of the plate-shaped insulating film 360 of the present embodiment has a first end portion 364a, a first inclined portion 364b, a central portion 364c , and a second inclined portion 364d from one side in the B direction to the other side in the B direction. , Has a second end portion 364e. In the present embodiment, the first end portion 364a, the central portion 364c, and the second end portion 364e extend parallel to the B direction, and the first inclined portion and the second inclined portion 364d extend in the A direction and the B direction. It extends in an inclined manner. The first end portion 364b is inclined so that the end portion on the central portion 364c side is arranged on the other side in the A direction and the other side in the B direction from the end portion on the first end portion 364a side. The second inclined portion 364d is inclined so that the end portion on the central portion 364c side is arranged on the other side in the A direction and the one side in the B direction from the end portion on the second end portion 364e side.
Then, similarly to the insulating film 310 of the first embodiment, the first divided portion 350A to the fourth divided portion 350D are bent along the bent portions L1 to L3, so that the insulating film 350 having a T-shaped cross section is formed. It is formed.
In the insulating fill 350 of the present embodiment, the edge portion 353 on one side in the A direction is formed in a protruding shape in which the central portion 353c (central portion first portion 353c1 and central portion second portion 353c2) protrudes to one side in the A direction. The edge portion 354 on the other side in the A direction is formed in a protruding shape in which the central portion 354c (central portion first portion 354c1 and central portion second portion 354c2) protrudes to the other side in the A direction.
The insulating film 350 of the present embodiment can be inserted from the edge portion 353 side or from the edge portion 354 side. Thereby, the insertion workability of the insulating film 350 can be further improved.

FIG. 16 shows a state in which the insulating film 350 of the second embodiment is arranged between the insulator 200 and the yoke 131.
The broken line in FIG. 16 shows that the portion of the edge portion 354 of the insulating film 350 in the vicinity of the bent portion L3 abuts on the side surface portion 214c of the side surface 214 of the insulator 200, so that the insulating film 350 moves to the other side in the axial direction. Indicates a regulated state.
Further, in the alternate long and short dash line of FIG. 16, the portion of the edge portion 354 of the insulating film 350 in the vicinity of the bent portion L3 abuts on the end portion of the wall surface 292 forming the recess 290 of the insulator 200 on the side surface 214 side. , The state in which the movement of the insulating film 350 to the other side in the axial direction is restricted is shown.

FIG. 17 shows a modified example in which the insulator 200 of the first embodiment is changed for the insulating film 350 of the second embodiment. In the modified example of the insulator 200 shown in FIG. 17, the shapes of the wall surface 282 forming the recess 280 and the wall surface 292 forming the recess 290 are different.
In the modified example, the wall surface 282 forming the recess 280 is arranged on one side of the wall surface portion 282a extending along the circumferential direction and the wall surface portion 282a in the circumferential direction, and extends in an inclined shape with respect to the circumferential direction and the axial direction. It has an existing wall surface portion 282b. In FIG. 17, the wall surface portion 282a extends parallel to the circumferential direction. Further, the wall surface portion 282b is inclined so that the end portion on the side opposite to the wall surface portion 282a is arranged on one side in the circumferential direction and the other side in the axial direction from the end portion on the wall surface portion 282a side.
The wall surface 292 forming the recess 290 is arranged on the other side of the wall surface portion 292a in the circumferential direction and the wall surface portion 292a extending along the circumferential direction, and extends in an inclined shape with respect to the circumferential direction and the axial direction. It has 292b. In FIG. 17, the wall surface portion 292a extends parallel to the circumferential direction. Further, the wall surface portion 292b is inclined so that the end portion on the side opposite to the wall surface portion 292a is arranged on the other side in the circumferential direction and the other side in the axial direction from the end portion on the wall surface portion 292a side.
In this modified example, when the insulating film 350 is moved to one side in the axial direction, the first end portion 353a and the first inclined portion 353b of the edge portion 353 of the insulating film 350 are the fourth outer side of the protrusion 270 of the insulator 220. By abutting the wall surface portion 274d and the third outer wall surface portion 274c, or by the second end portion 353e and the second inclined portion 353d of the edge portion 353, the fourth outer wall surface portion 264d and the third outer wall surface portion of the protrusion 260 It is regulated by contacting the portion 264c. Further, when the insulating film 350 is moved to the other side in the axial direction, the wall surface portion of the wall surface 292 in which the first end portion 354a and the first inclined portion 354b of the edge portion 354 of the insulating film 350 form the recess 290 of the insulator 220. By abutting the 292a and the wall surface portion 292b, or by abutting the second end portion 354e and the second inclined portion 354d of the edge portion 354 with the wall surface portion 282a and the wall surface portion 282b of the wall surface 282 forming the recess 280. Be regulated.
Thereby, the insertion workability can be further improved and the holding property can be further improved.
The side surface 214 of the modified example has the side surface portions 214a and 214b extending in the axial direction, with the side surface portions 241c and 214d extending in an inclined shape omitted as shown in FIG.

A third embodiment of the insulating film will be described with reference to FIG.
The insulating film 370 of the third embodiment is formed by bending the plate-shaped insulating film 380 shown in FIG.
The insulating film 370 of the third embodiment has the same configuration as the insulating film 310 of the first embodiment except for the shape of the edge portion 374 on the other side in the A direction.
In addition, in FIGS. 18 and 19, except for the edge portions 374 and 384, the same reference numerals are given to the respective components shown in FIGS. 9 and 10 except for the second digit. The components that are present indicate the same components.
In the insulating film 370 of the present embodiment, the edge portion 374 has a first end portion 374a, a central portion first portion 374b, a central portion second portion 374c, and a second end from one side in the B direction to the other side in the B direction. It has a portion 374d. The first end portion 374a, the central portion first portion 374b, the central portion second portion 374c, and the second end portion 374d are formed by bending the edge portion 384 of the plate-shaped insulating film 380 shown in FIG. It is divided by ~ L3 and extends parallel to the B direction.
Then, similarly to the insulating film 310 of the first embodiment, the first divided portion 370A to the fourth divided portion 370D are bent along the bent portions L1 to L3, so that the insulating film 370 having a T-shaped cross section is formed. It is formed.
In the insulating fill 370 of the present embodiment, the edge portion 373 on one side in the A direction is formed in a protruding shape in which the central portion 373c (central portion first portion 373c1 and central portion second portion 373c2) protrudes to one side in the A direction. The edge 374 on the other side in the A direction has a shape parallel to the B direction.

FIG. 20 shows a state in which the insulating film 370 of the third embodiment is arranged between the insulator 200 and the yoke 131.
In FIG. 20, the movement of the resin film 370 to the other side in the axial direction is performed by the first edge portion 374a of the edge portion 374 of the resin film 370 contacting the wall surface 292 forming the recess 290 of the insulator 200, or. The second edge portion 374d of the edge portion 374 is regulated by abutting on the wall surface 282 forming the recess 280.
When the resin film 370 of the present embodiment is used, the side surface 214 of the insulator 200 is extended in the axial direction by omitting the side surface portions 241c and 214d extending in an inclined shape shown in FIG. It can also be modified to have existing side portions 214a and 214b.

Next, a second embodiment of the stator constituting the electric motor of the present invention will be described with reference to FIG. Note that FIG. 21 is a perspective view of the stator 400 of the second embodiment. In the stator 100 of the first embodiment, the insulator 200 is provided with recesses 280 and 290 that regulate the positions of the insulating film in the circumferential direction and the axial direction, whereas in the stator 400 of the second embodiment, the stator core. The yoke is provided with a groove in which the insulating film can move along the axial direction, and the insulator is provided with a protrusion for restricting the movement of the insulating film in the axial direction.
Like the stator 100 of the first embodiment, the stator 400 of the present embodiment is composed of a stator core 410, an insulator 500, a stator winding (not shown), and an insulating film 310.

The stator core 410 has core end faces 410A and 410B on both sides in the axial direction. Further, the stator core 410 is configured as a stator core having a divided structure. In the present embodiment, as shown in FIG. 22, the stator core 410 is composed of a first core member 420 having a teeth 421 and a second core member 430 having a yoke 431.
Similar to the first core member 120 of the first embodiment, the first core member 420 has a state in which a plurality of teeth 421 having a tooth base portion 422, a tooth tip portion 423 and a tooth tip surface 424 are connected by a connecting portion 425. There are a plurality of them along the circumferential direction.
Similar to the second core member 430 of the first embodiment, the second core member 430 has a yoke 431 having a yoke outer peripheral surface 432 and a yoke inner peripheral surface 433 extending along the circumferential direction. Further, it has a recess forming surface 434a forming a recess 434 into which the tip end portion of the tooth base 422 of the first core member 420 is press-fitted. Further, the yoke inner peripheral surface 433 has yoke inner peripheral surface portions 433a and 433b formed between two recesses 434 (recess forming surfaces 434a) adjacent to each other in the circumferential direction. The yoke inner peripheral surface portions 433a and 433b are inclined in the same manner as the yoke inner peripheral surface portions 133a and 133b of the first embodiment.
In the present embodiment, the yoke 431 is formed with a groove forming surface recessed from the inner peripheral surface of the yoke 433 to the outer peripheral side in the radial direction. The groove-forming surface has groove-forming surface portions 435a and 435b that are recessed on the outer peripheral side in the radial direction from the inner peripheral surface portions 433a and 433b of the yoke, respectively. The groove-forming surfaces (groove-forming surface portions 435a and 435b) form grooves 435 that are recessed from the inner peripheral surface of the yoke to the outer peripheral side in the radial direction and are open to the core end surfaces 410A and 410B. The groove 435 (groove forming surface) is formed between two recesses 434 adjacent in the circumferential direction (between two teeth 421 adjacent in the circumferential direction).
The groove 435 has a region formed by the groove forming surface portion 435a (a region on the other side in the circumferential direction) and a region formed by the groove forming surface portion 435b (a region on one side in the circumferential direction). The edge portion on one side in the circumferential direction and the edge portion on the other side in the circumferential direction of the insulating film are arranged in the same groove 435. For example, the edge portion on one side in the circumferential direction is arranged in the region formed by the groove forming surface portion 435b in the groove 435, and the edge portion on the other side in the circumferential direction is arranged in the region formed by the groove forming surface portion 435a. Be placed.

A second embodiment of the insulator mounted on the teeth 421 will be described with reference to FIG. FIG. 23 is a perspective view of the insulator 500 of the second embodiment.
The insulator 500 has a first flange portion 510, a second flange portion 520, a body portion 530, and a through hole 540, similarly to the insulator 200 of the first embodiment.
In the insulator 500 of the present embodiment, the recesses 280 and 290 of the insulator 200 of the first embodiment are omitted, and instead, protrusions 580 and 590 protruding from the outer peripheral surface 510A toward the outer peripheral side in the radial direction are provided. .. That is, it has the same configuration as the insulator 200 of the first embodiment except for the protrusions 560, 570, 580 and 590. Therefore, in the following, only the protrusions 560, 570, 580 and 590 will be described.
In the present embodiment, the outer peripheral surface 510A, the inner peripheral surface 510B, the end surface 511, the end surface 512, the side surface 513 and the side surface 514 of the first flange portion 510 are the "first outer peripheral surface" and the "first inner peripheral surface" of the present invention, respectively. , "First end face", "second end face", "first side surface" and "second side surface".
Further, the outer peripheral surface 520A, inner peripheral surface 520B, end surface 521, end surface 522, side surface 523 and side surface 524 of the second flange portion 520 are the "second outer peripheral surface", "second inner peripheral surface", and "second inner peripheral surface" of the present invention, respectively. Corresponds to "third end face", "fourth end face", "third side surface" and "fourth side surface".

The first flange portion 510 is provided with protrusions 550, 560, 570, 580 and 590 protruding from the outer peripheral surface 510A to the outer peripheral side in the radial direction.
The protrusion 560 is provided in a region on the end surface 511 side (one side in the axial direction) and the side surface 513 side (one side in the circumferential direction) from the through hole 540. The protrusion 560 has an outer wall surface of 561 to 564, similarly to the protrusion 260 of the first embodiment. Further, the outer wall surface 564 has the first outer wall surface portion 564a to the fifth outer wall surface portion 564e, similarly to the outer wall surface 264 of the first embodiment.
The protrusion 570 is provided in a region on the end surface 511 side (one side in the axial direction) and the side surface 514 side (the other side in the circumferential direction) from the through hole 540. The protrusion 570 has an outer wall surface 571 to 574, similarly to the protrusion 270 of the first embodiment. Further, the outer wall surface 574 has the first outer wall surface portion 574a to the fifth outer wall surface portion 574e, similarly to the outer wall surface 274 of the first embodiment.
The protrusion 580 is provided in a region on the end surface 512 side (the other side in the axial direction) and the side surface 513 side (one side in the axial direction) from the through hole 540. The protrusion 580 has an outer wall surface 580a extending along the circumferential direction on the side facing the protrusion 560. In the present embodiment, the outer wall surface 580a extends parallel to the circumferential direction.
The protrusion 590 is provided on the end surface 512 side (the other side in the axial direction) and the side surface 514 side (the other side in the axial direction) from the through hole 540. The protrusion 590 has an outer wall surface 590a extending along the circumferential direction on the side facing the protrusion 570. In the present embodiment, the outer wall surface 590a extends parallel to the circumferential direction.

The protrusions 560, 570, 580 and 590 correspond to the "first protrusion", "second protrusion", "third protrusion" and "fourth protrusion" of the present invention, respectively. The protrusion 560 and the protrusion 580 constitute the "first position regulating portion" of the present invention, and the protrusion 570 and the protrusion 590 constitute the "second position regulating portion" of the present invention.
The third outer wall surface portion 564c and the fourth outer wall surface portion 564d of the protrusion 560 constitute the "first wall surface of the first position regulating portion" or the "first protrusion forming surface of the first protrusion" of the present invention. The outer wall surface 580a of the protrusion 580 constitutes the "second wall surface of the first position regulating portion" or the "second protrusion forming surface of the third protrusion" of the present invention, and the fifth outer wall surface of the protrusion 560. The portion 564e constitutes the "third wall surface of the first position regulating portion" or the "third protrusion forming surface of the first protrusion" of the present invention.
The fourth outer wall surface portion 564d of the protrusion 560 corresponds to the "first wall surface first portion of the first position regulating portion" or the "first protrusion forming surface first portion of the first protrusion" of the present invention. The third outer wall surface portion 564c of the protrusion 560 corresponds to the "first wall surface second portion of the first position regulating portion" or the "first protrusion forming surface second portion of the first protrusion" of the present invention.
The third outer wall surface portion 574c and the fourth outer wall surface portion 574d of the protrusion 570 constitute the "fourth wall surface of the second position regulating portion" or the "fourth protrusion forming surface of the second protrusion" of the present invention. The outer wall surface 590a of the protrusion 590 constitutes the "fifth wall surface of the second position regulating portion" or the "fifth protrusion forming surface of the fourth protrusion" of the present invention, and the fifth outer wall surface of the protrusion 570. The portion 574e constitutes the "sixth wall surface of the second position regulating portion" or the "sixth protrusion forming surface of the second protrusion" of the present invention.
The fourth outer wall surface portion 574d of the protrusion 570 corresponds to the "first portion of the fourth wall surface of the second position regulating portion" or the "first portion of the fourth protrusion forming surface of the second protrusion" of the present invention. The third outer wall surface portion 574c of the protrusion 570 corresponds to the "second portion of the fourth wall surface of the second position regulating portion" or the "second portion of the fourth protrusion forming surface of the second protrusion" of the present invention.

The operation of assembling the first core member 420 and the second core member 430 is the same as the operation of assembling the first core member 120 and the second core member 130 in the stator 100 of the first embodiment. That is, the end of the tooth base 422 of the first core member 420 is inserted into the through hole 540 of the insulator 500, and the end of the tooth base 422 protruding from the outer peripheral surface 510A of the first flange 510 of the insulator 500 is inserted. , Press-fit into the recess 434 formed in the yoke 431 of the second core member 430.
At this time, the third outer peripheral surface portion 564c and the fourth outer peripheral surface portion 564d of the protrusion 560 of the insulator 500 mounted on the teeth 421 of the first core member 420 and the outer wall surface 580a of the protrusion 580 are the insulator 500. A region where the other side of the insulating film inserted between the insulator and the yoke 431 in the circumferential direction is arranged, for example, the groove 435 is arranged at a position facing the region formed by the groove forming surface portion 435a, and the protrusion is formed. The third outer peripheral surface portion 574c of the 570, the fourth outer peripheral surface portion 574d, and the outer wall surface 490a of the protrusion 490 are the regions where one side of the insulating film is arranged in the circumferential direction, for example, the groove forming surface portion of the groove 435. It is configured to be arranged at a position corresponding to the region formed by the 435b. That is, it is possible to regulate the axial movement of the edge portion on one side in the circumferential direction and the edge portion on the other side in the circumferential direction of the insulating member arranged in the groove 435 opened on the core end faces on both sides in the axial direction. ..
In this embodiment, the above-mentioned insulating films 310, 350 and 370 can be used.

The present invention is not limited to the configuration described in the embodiment, and various changes, additions, and deletions can be made.
In the embodiment, the insulating film bent so as to have a T-shaped cross section and the plate-shaped insulating film which is not bent have been described, but the shape of the insulating film is not limited to this.
The insulating film has a first end portion in which at least one edge along the first direction (axial direction) extends along the second direction (circumferential direction) intersecting the first direction (axial direction). It suffices to have a first inclined portion and a second inclined portion extending in an inclined shape with respect to the second end portion, the first direction and the second direction.
In the embodiment, the insulating film is arranged between the insulator and the yoke of the stator core, but the arrangement position of the insulating film is not limited to this.
Although the case where the insulating film is used for the stator in which the insulator (resin bobbin) is attached to the teeth has been described, the insulating film of the present invention has a stator having various other structures, for example, a stator core. It can be used for a stator in which insulators (resin bobbins) are arranged on both sides in the axial direction.
Each configuration described in each embodiment may be used alone or in combination of a plurality of configurations selected as appropriate.
The motor of the present invention can be used as a motor for driving various devices such as an air conditioner drive motor, a vehicle drive motor, and an in-vehicle device drive motor.

100, 400 Stator 110, 410 Stator core 110A, 110B, 410A, 410B Stator core end face 120, 420 First core member 121, 421 Teeth 122, 422 Teeth base 123, 423 Teeth tip 124, 424 Teeth tip surface 125, 425 Connecting part 126, 426 Caulking protrusion 130, 430 Second core member 131, 431 York 132, 432 York outer peripheral surface 133, 433 York inner peripheral surface 133a, 133b, 433a, 433b York inner peripheral surface portion 134, 434 Recesses 134a, 434a Recess formation surfaces 136, 436 Caulking protrusions 200, 500 Insulator 210, 510 First flange 210A, 510A Outer surface (first outer peripheral surface)
210B, 510B inner peripheral surface (first inner peripheral surface)
211,511 end face (first end face)
212, 512 end face (second end face)
213, 513 Side surface (first side surface)
213a, 213b side surface part 214, 514 side surface (second side surface)
214a, 241b, 214c, 214d, 514a, 514b, 514c Side surface portion 220, 520 Second flange portion 220A, 520A Outer peripheral surface (second outer peripheral surface)
220B, 520B inner peripheral surface (second inner peripheral surface)
221 and 521 end face (third end face)
222,522 End face (4th end face)
223, 523 side surface (third side surface)
224,524 side surface (fourth side surface)
224a, 224b, 524a, 524b Side surface part 225, 525 Step surface 230, 530 Body part 240, 540 Through hole 241, 242, 243, 244, 541, 542, 543, 544 Inner wall surface 241a, 242a, 243a, 244a, 541a , 542a, 543a, 544a Inclined surface 250, 550 protrusions (guide protrusions)
251 and 551 outer wall surface (guide surface)
252, 552 Inner wall surface 260, 560 protrusion (first protrusion)
261, 262, 263, 264, 561, 562, 563, 564 Outer wall surface 264a, 264b, 264c, 264d, 264e, 564a, 564b, 564c, 564d, 564e Outer wall surface part 265, 266, 565, 566 Notch 270, 570 protrusion (second protrusion)
271, 272, 273, 274, 571, 572, 573, 574 Outer wall surface 274a, 274b, 274c, 274d, 274e, 574a, 574b, 574c, 574d, 574e Outer wall surface part 275, 276, 575, 576 Notch 277, 577 Locking protrusion 278, 578 Protrusion 280 recess (first recess)
281 Bottom surface 282 Wall surface (second wall surface)
283 wall surface (third wall surface)
290 recess (second recess)
291 Bottom 292 Wall surface (5th wall surface)
293 wall surface (6th wall surface)
310, 350.370 Insulation film (winding insulation member)
310A, 310B, 310C, 310D, 350A, 350B, 350C, 350D, 370A, 370B, 370C, 370D 1st to 4th divisions 311, 351, 371 Edges (1st edge)
312, 352, 372 edges (second edge)
313, 353, 373 edge (third edge)
314, 354, 374 edge (4th edge)
313a, 313b, 313c1, 313c2, 313d, 313e, 314a, 314b, 314c1, 314c2, 314d, 314e, 353a, 353b, 353c1, 353c2, 353d, 353e, 354a, 354b, 354c1, 354c2, 354d, 354e, 373a, 373b, 373c1, 373c2, 373d, 373e, 374a, 374b, 374c, 374d Edges 320, 360, 380 Insulating films 321, 361, 381 Edges (first edge)
322, 362, 382 edges (second edge)
323, 363, 383 edge (third edge)
324, 364, 384 Edge (4th edge)
323a, 323b, 323c, 323d, 323e, 324a, 324b, 324c, 324d, 324e, 363a, 363b, 363c, 363d, 363e, 364a, 364b, 364c, 364d, 364e, 383a, 383b, 383c, 383d, 383e Part 435 Grooves 435a, 453b Groove forming surface 580, 590 Protrusions 580a, 590a Outer wall surface L1, L2, L3 Bent part

Claims (7)

A winding insulating member formed by bending an insulating film and used for a stator.
The insulating film is formed on one side and the other side along the first direction, and extends along the second direction intersecting the first direction, and the second edge portion and the second edge portion. It has a third edge and a fourth edge that are formed on one side and the other side along the direction and extend along the first direction.
The third edge portion is formed on the first central portion formed in the center along the first direction and on the one side and the other side along the first direction from the first central portion. Between the first and second end portions, the first inclined portion formed between the first central portion and the first end portion, and between the first central portion and the second end portion. Has a second sloping portion that is formed
The first inclined portion is inclined so that the end portion on the first central portion side is arranged on the one side along the second direction from the end portion on the first end portion side.
The second inclined portion is inclined so that the end portion on the first central portion side is arranged on the one side along the second direction from the end portion on the second end portion side .
The insulating film passes through a connecting portion between the first inclined portion and the first central portion, and is defined by a first bent portion extending along the second direction and the first edge portion. A second divided portion defined by a divided portion, a second bent portion extending along the second direction through the center of the first central portion, and the first bent portion, and the first central portion. A third divided portion defined by a third bent portion extending along the second direction, a third divided portion defined by the second bent portion, and the third bent portion. It is divided into a fourth divided portion defined by the second edge portion, and is divided into four divided portions.
The second divided portion and the third divided portion are bent in a V shape along the second bent portion, and the first divided portion is formed with the V-shaped opening along the first bent portion. A winding insulating member that is bent to the side opposite to the portion, and the fourth divided portion is bent to the opposite side to the V-shaped opening along the third bent portion. The winding insulation member according to claim 1.
The fourth edge portion is formed on the second central portion formed in the center along the first direction and on the one side and the other side along the first direction from the second central portion. Between the third end portion and the fourth end portion, the third inclined portion formed between the second central portion and the third end portion, and the second central portion and the fourth end portion. It has a fourth inclined portion that is formed and has
The third inclined portion is inclined so that the end portion on the second central portion side is arranged on the one side along the second direction from the end portion on the third end portion side.
The fourth inclined portion is inclined so that the end portion on the second central portion side is arranged on the one side along the second direction from the end portion on the fourth end portion side .
The first bent portion passes through the connecting portion between the third inclined portion and the second central portion, the second bent portion passes through the center of the second central portion, and the third bent portion passes through the center of the second central portion. A winding insulating member characterized in that it passes through a connecting portion between a fourth inclined portion and the second central portion. The winding insulation member according to claim 1.
The fourth edge portion is formed on the second central portion formed in the center along the first direction and on the one side and the other side along the first direction from the second central portion. Between the third end portion and the fourth end portion, the third inclined portion formed between the second central portion and the third end portion, and the second central portion and the fourth end portion. It has a fourth inclined portion that is formed and has
The third inclined portion is inclined so that the end portion on the second central portion side is arranged on the other side along the second direction from the end portion on the third end portion side.
The fourth inclined portion is inclined so that the end portion on the second central portion side is arranged on the other side along the second direction from the end portion on the fourth end portion side .
The first bent portion passes through the connecting portion between the third inclined portion and the second central portion, the second bent portion passes through the center of the second central portion, and the third bent portion passes through the center of the second central portion. A winding insulating member characterized in that it passes through a connecting portion between a fourth inclined portion and the second central portion. A stator having a stator core, an insulator, a stator winding, and a winding insulation member.
A stator according to any one of claims 1 to 3 , wherein the winding insulating member according to any one of claims 1 to 3 is used as the winding insulating member. The stator according to claim 4,
The stator core has a yoke extending along the circumferential direction and a plurality of teeth extending radially inward from the yoke when viewed in a cross section perpendicular to the axial direction. Has a teeth base extending radially inward from the yoke and a teeth tip provided on the radial inner peripheral side of the teeth base and extending along the circumferential direction.
The insulator is attached to the tooth and
The stator winding is wound around the insulator mounted on the tooth.
The winding insulating member is a stator characterized in that it is arranged between the insulator and the yoke. The stator according to claim 5,
The stator core is a stator characterized in that it is composed of a first core member having the plurality of teeth and a second core member having the yoke. An electric motor including a stator and a rotor that can rotate relative to the stator.
An electric motor according to any one of claims 4 to 6 , wherein the stator according to any one of claims 4 to 6 is used as the stator.

Images