JP2012170166A - Stator for rotating machine and rotating machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique which ensures that ends of a stator winding wire can be fixed.SOLUTION: End insulation members 40, 50 are installed on axial both sides of a stator core 20. A storage member 60 is installed on a side opposite to the stator core 20 relative to the end insulation member 40 along the axial direction. The storage member 60 includes: a base part 61 extending along the radial direction; and communication parts 66(1)-66(4) communicating the end insulation member 40 side of the base part 61 with the side opposite to the end insulation member 40 of the base part 61. In the storage member 60, storage grooves 65(1)-65(4) are formed on the side opposite to the end insulation member 40. Ends 31(1)-31(4) of stator winding wires 30 are made to pass through the communication parts 66(1)-66(4) and then, stored in the storage grooves 65(1)-65(4).

Description

  The present invention relates to a stator of a rotating machine and a rotating machine, and more particularly to a technique for fixing an end portion of a stator winding wound around the stator.

BACKGROUND ART A rotating machine such as an electric motor or a generator includes a stator having a stator core and a stator winding, and a rotor. The stator core includes, for example, an annular yoke extending along the circumferential direction when viewed in a cross section perpendicular to the axial direction, and a plurality of stator cores protruding radially inward from the yoke and spaced apart in the circumferential direction. Have teeth. Each tooth has a tooth base extending in the radial direction and a tooth tip provided at the tip of the tooth base and extending in the circumferential direction. The rotor is rotatably supported in a state where there is a gap between the rotor and the tooth tip.
As a method of winding the stator winding around the teeth, a concentrated winding method or a distributed winding method is used. When the stator winding is wound around the teeth by the concentrated winding method, end insulating members are provided on both sides in the axial direction of the stator core. Then, the stator winding is wound directly around the end insulating member and the teeth. In this case, it is necessary to fix the end of the stator winding, in particular, the end of the stator winding connected to the neutral point so as not to move due to vibration or the like.
In order to prevent the end of the stator winding from moving, Patent Document 1 discloses a stator using a housing member. In the stator disclosed in Patent Document 1, the end portion of the stator winding is disposed in a housing space formed by the end insulating member and the housing member.

JP 2010-45951 A

In the stator disclosed in Patent Document 1, the movement of the end portion of the stator winding to the outside of the housing space formed by the end insulating member and the housing member is prevented. However, it is possible to move the end of the stator winding within the accommodation space. In particular, the end connected to a common point such as a neutral point can freely move at the tip. For this reason, there is a possibility that insulation failure occurs at the end of the stator winding.
The present invention has been made in view of such a point, and an object of the present invention is to provide a technique capable of reliably fixing an end portion of a stator winding.

The rotating machine of the present invention is a rotor adder type rotating machine in which the rotor is rotatably supported inside the stator, or outside the rotor in which the rotor is rotatably supported outside the stator. It can be configured as a rotary type rotating machine. The rotating machine of the present invention can be configured as various types of rotating machines such as an electric motor and a generator. In addition, the stator of the present invention can be configured as a stator in which the rotor is disposed on the inner side, or as a stator in which the rotor is disposed on the outer side.
The “axial direction” indicates a direction of a line (rotation center line) passing through the center of the rotor in a state where the rotor is rotatably supported with respect to the stator. In addition, the “circumferential direction” indicates a circumferential direction centering on the rotation center line when viewed in a cross section perpendicular to the axial direction in a state where the rotor is rotatably supported with respect to the stator. The “radial direction” indicates a direction passing through the rotation center line when viewed in a cross section perpendicular to the axial direction in a state where the rotor is rotatably supported with respect to the stator.

One invention relates to a stator of a rotating machine. The stator includes a stator core, a stator winding, and end insulating members provided on both sides in the axial direction of the stator core.
The stator core preferably includes a yoke extending in the circumferential direction when viewed in a cross section perpendicular to the axial direction, and a plurality of teeth extending in the radial direction from the yoke. Each tooth has a teeth base portion extending in the radial direction from the yoke, and a teeth tip portion provided on the distal end side of the teeth base portion and extending in the circumferential direction. A tooth tip surface is formed on the tooth tip portion on the side opposite to the yoke. In addition, the rotor is supported rotatably with respect to the stator in a state where there is a gap between the front end surface of the teeth. Each of the end insulating members is preferably disposed at a position facing the tip of the tooth when viewed in a cross section perpendicular to the axial direction, and has a plurality of first wall portions extending along the circumferential direction. A first wall disposed at a location facing the yoke and extending along the circumferential direction; and a second wall disposed at a location facing the teeth base and extending along the radial direction. And a plurality of connecting portions connected to the second wall portion. Further, the stator winding is preferably wound around the connecting portion between the tooth and the end insulating member by a concentrated winding method.
In the present invention, a housing member that houses the end of the stator winding is provided on the opposite side of the stator core from at least one of the end insulating members along the axial direction. The housing member has a base extending along the radial direction. Typically, the base portion has a ring shape extending in the circumferential direction when viewed in a cross section perpendicular to the axial direction. The housing member has a communication portion and at least one housing groove. The communicating portion communicates the end insulating member side of the base and the side opposite to the end insulating member of the base. The accommodation groove is formed on the side of the base opposite to the end insulating member. As a method for accommodating the end of the stator winding in the accommodating groove, a method in which at least the tip of the end of the stator winding is accommodated in the accommodating groove is preferably used. In addition, the aspect of “accommodating the end portion of the stator winding in the accommodating groove” includes an aspect in which another member connected to the end portion of the stator winding is accommodated in the accommodating groove. Further, the number of end portions of the stator winding accommodated in the accommodation groove can be appropriately selected.
In the stator according to the present invention, the end portion of the stator winding is passed in the axial direction through the communicating portion of the housing member, and then the housing is formed on the opposite side of the end insulating member at the base portion of the housing member. Since it is accommodated in the groove, the end of the stator winding can be reliably fixed. Further, since the housing groove is formed on the opposite side of the base from the end insulating member, the end of the stator winding can be easily inserted into the housing groove.

In another embodiment, the accommodation groove is formed so as to extend along the circumferential direction. In the “accommodating groove extending along the circumferential direction”, the accommodating groove formed so that the distance from the rotation center line is equal (including substantially equal), or the distance from the rotation center line is different. A receiving groove is included.
By having the accommodation groove extending along the circumferential direction, the radial dimension of the accommodation member can be reduced.

In another different form, the accommodation groove is formed by an accommodation groove forming portion that protrudes along the axial direction from the base portion toward at least one end insulating member and extends in the circumferential direction. Further, at least one end insulating member has a wall portion extending along the axial direction and extending along the circumferential direction. The housing groove forming portion has a wall surface on the side facing the wall portion of at least one end insulating member along the radial direction. A housing space is formed by the wall surface of the housing groove forming portion and the wall surface of the wall portion of the end insulating member, which are opposed to each other in the radial direction. Then, the end of the stator winding is disposed in the accommodating space formed by the wall surface of the accommodating groove forming portion and the wall surface of the wall portion of at least one end insulating member, and then passed through the communicating portion. Yes. The housing space is preferably formed radially outward from the housing groove forming portion. Moreover, the accommodation space is preferably formed so as to extend along the circumferential direction.
In this embodiment, the end of the stator winding can be arranged in the accommodation space.

In another different embodiment, the wall surface of the housing groove forming portion is inclined as seen in a cross section along the radial direction. The inclination direction of the wall surface of the housing groove forming portion can be set as appropriate, but preferably, the interval between the wall surface of the housing groove forming portion and the wall surface of the wall portion of the end insulating member is the end insulating member side. It is set such that the side opposite to the end insulating member is shorter.
In this embodiment, the end portion of the stator winding is brought closer to one side along the radial direction in the accommodation space. Thereby, the movement of the end part of the stator winding can be further prevented.

In another different embodiment, at least one end of the accommodation groove along the circumferential direction is communicated with the communicating portion. The end of the stator winding is preferably inserted into the receiving groove from one end side.
In this embodiment, the end portion of the stator winding can be prevented from protruding in the axial direction (direction of the rotation center line) from the base portion of the housing member.

In still another different form, the end of the stator winding that has passed through one communicating portion is inserted into the accommodation groove from one end side along the circumferential direction, and from the other end side along the circumferential direction, The end of the stator winding that has passed through another communication portion is inserted. The accommodation groove is preferably formed so that one end along the circumferential direction communicates with one communication groove and the other end along the circumferential direction communicates with another communication portion.
In this embodiment, since the number of housing grooves can be reduced, the strength of the housing member can be increased. Furthermore, by connecting both ends of the housing groove along the circumferential direction to the communication portion, it is possible to prevent the end portion of the stator winding from protruding from the base portion of the housing member in the axial direction (rotor center line direction). Can do.

Furthermore, in another different form, in order to more reliably prevent the end of the stator winding from moving due to vibration or the like, a holding portion that holds the end of the stator winding in the receiving groove is provided. Yes.
Various modes can be used as a mode for holding the end portion of the stator winding in the holding groove.
For example, the aspect which provides the convex part which protrudes in an accommodation groove | channel can be used. The convex portion is formed so that the width of the receiving groove at the location where the convex portion is provided is smaller than the width of the end portion of the stator winding. A convex part may be provided in one of the inner wall surfaces which oppose one direction (for example, radial direction) among the wall surfaces which form an accommodation groove | channel, and may be provided in both. Moreover, the shape of a convex part can be set suitably. Various methods can be used as a method for accommodating the end of the stator winding in the accommodation space. For example, it is possible to use a method in which the end portion of the stator winding is passed through a portion where the convex portion is provided by utilizing the elastic deformation of the stator winding or the convex portion, or the stator winding. It is possible to use a method in which the end of the underside is hidden under the convex portion (back). Alternatively, using the elastic deformation of the end of the stator winding or the protruding portion, the end of the stator winding is positioned between the protruding portions facing in one direction or between the protruding portion and the inner wall surface of the receiving groove. It is possible to use a method of sandwiching.
Or the aspect which provides the convex part which protrudes in an accommodation groove | channel, and the recessed part depressed from the accommodation groove | channel can be used. The arrangement positions and shapes of the convex portion and the concave portion are set so that the end portion of the stator winding is sandwiched between the convex portion and the concave portion. Suitably, a convex part and a recessed part are provided in the location which opposes on both sides of an accommodation groove | channel along one direction (for example, radial direction).
Suitably, the part (wall surface) which a convex part and a recessed part mutually oppose is formed in the plane which inclines in the same direction seeing in the cross section along radial direction. The inclination direction may be a direction in which the distance between the plane and the rotation center line is longer on the end insulating member side than on the opposite side to the end insulating member, or on the end insulating member side is opposite to the end insulating member. The direction may be shorter than the side.
Alternatively, a mode in which resin (for example, epoxy resin, silicon resin, polyurethane resin, polyvinyl chloride resin, thermoplastic resin, etc.) is filled in the accommodation groove in a state where the end of the stator winding is accommodated in the accommodation groove. Can be used.
Alternatively, it is possible to use a mode in which the end of the stator winding is fixed to the base of the receiving member with a string while the end of the stator winding is received in the receiving groove. As the string, for example, a polyester cord (a polyester strand, a polyester braided string), a nomex cord, a PPS cord, a Vectran cord, a polyester / nomex mixed (braided) cord or the like is used. The “string” of the present invention includes a thread.
In addition, any one may be used for the aspect which hold | maintains the edge part of an above described stator coil | winding in a storage groove, and the several selected suitably may be used.

In another different embodiment, the end portions of the stator windings are housed in the housing grooves in a state of being connected at a common point. The “state connected at a common point” typically corresponds to the “state connected at a neutral point”.
In this embodiment, among the end portions of the stator winding, the end portion connected to the common point can be prevented from moving due to vibration or the like.

Another invention relates to a rotating machine. The rotating machine includes any one of the above-described stators and a rotor, and the rotor is rotatably supported so as to have a gap between the stator tip end surfaces.
The rotating machine of the present invention has the same effect as the stator described above. Thereby, the rotating machine which can prevent that the edge part of a stator coil | winding moves by the vibration etc. at the time of a driving | operation can be obtained.

  In the stator or the rotating machine of the rotating machine of the present invention, it is possible to reliably prevent the end of the stator winding from moving due to vibration or the like.

FIG. 3 is a perspective view of a stator of the rotating machine according to the first embodiment (a housing member is not shown). It is a fragmentary sectional view of a stator core. FIG. 3 is a perspective view of a stator of the rotating machine according to the first embodiment. It is the IV-IV sectional view taken on the line of FIG. It is a perspective view of the accommodating member used with the stator of the rotary machine of 1st Embodiment. FIG. 6 is a sectional view taken along line VI-VI in FIG. 5. It is a perspective view of the back side of the accommodating member used with the stator of the rotary machine of 1st Embodiment. It is the VIII-VIII sectional view taken on the line of FIG. It is a perspective view of the accommodating member used with the stator of the rotary machine of 2nd Embodiment. FIG. 10 is a sectional view taken along line XX in FIG. 9. It is a perspective view of the accommodating member used with the stator of the rotary machine of 3rd Embodiment. It is the XII-XII sectional view taken on the line of FIG. It is a perspective view of the accommodating member used with the stator of the rotary machine of 4th Embodiment. It is the XIV-XIV sectional view taken on the line of FIG. It is a figure which shows an example of a holding | maintenance part. It is a perspective view of the accommodating member used with the stator of the rotary machine of 5th Embodiment. It is the XVII-XVII sectional view taken on the line of FIG. It is a perspective view of the accommodating member used with the stator of the rotary machine of 6th Embodiment. It is the XIX-XIX sectional view taken on the line of FIG. It is a perspective view of the stator of the rotary machine of 7th Embodiment. It is a perspective view of the accommodating member used with the stator of the rotary machine of 7th Embodiment. It is the XXII-XXII sectional view taken on the line of FIG. It is a perspective view of the back side of the accommodating member used with the stator of the rotary machine of 7th Embodiment. It is the XXIV-XXIV sectional view taken on the line of FIG. It is a perspective view of the accommodating member used with the stator of the rotary machine of 8th Embodiment. It is XXVI-XXVI sectional view taken on the line of FIG.

Hereinafter, embodiments of the present invention will be described. In the following, a rotor adder type electric motor composed of a stator in which a stator winding is wound around teeth in a concentrated winding manner and a rotor that is rotatably supported inside the stator. explain.
Of course, the present invention can also be configured as a rotor abduction type electric motor in which the rotor is rotatably supported outside the stator. Moreover, this invention is not limited to an electric motor, It can comprise as various rotary machines, such as a generator.

A stator 10 of a rotating machine according to a first embodiment will be described with reference to FIGS. FIG. 1 is a perspective view of the stator 10 of the rotating machine according to the first embodiment, but the housing member 60 (see FIG. 5) is not shown. Since the housing member covers the space between the inner wall portion 41 and the outer wall portion 42 of the end insulating member 40 (the end insulating member 40 will be described later), it can also be referred to as a “cover member”. FIG. 2 is a partial cross-sectional view of the stator core 20. FIG. 3 is a perspective view of the stator 10 of the rotating machine according to the first embodiment, and FIG. 4 is a sectional view taken along line IV-IV in FIG. FIG. 5 is a perspective view of the housing member 60 used in the stator 10 of the rotating machine according to the first embodiment, and FIG. 6 is a sectional view taken along line VI-VI in FIG.
In the present specification, the “axial direction” means a line passing through the center of the rotor (rotation center line shown in FIG. 1) in a state where the rotor is rotatably supported with respect to the stator 10. P) direction. The “circumferential direction” is centered on the rotation center line P when viewed in a cross section perpendicular to the axial direction (direction of the rotation center line P) in a state where the rotor is rotatably supported with respect to the stator 10. Indicates the circumferential direction. The “radial direction” refers to a cross section perpendicular to the axial direction (the direction of the rotation center line P) when the rotor is rotatably supported with respect to the stator 10, and passes through the rotation center line P. Indicates direction.

The rotating machine according to the present embodiment includes a stator 10 and a rotor (not shown).
The stator 10 includes a stator core 20, a stator winding 30, end insulating members 40 and 50, and a housing member 60.
In the present embodiment, the stator core 20 is formed in a cylindrical shape (including a substantially cylindrical shape) and has end faces on both sides in the axial direction. The stator core 20 can also be formed in a cylindrical shape by assembling divided stator cores (stator core portions). As shown in FIG. 2, the stator core 20 has a yoke 21 extending along the circumferential direction as viewed in a cross section perpendicular to the axial direction, and a diameter from the yoke 21 spaced apart in the circumferential direction. A plurality of teeth 22 extending in the direction is provided. The stator core 20 is constituted by a laminated body in which a plurality of thin electromagnetic steel plates are laminated in the axial direction and integrated by an auto clamp or the like. The yoke 21 is formed in an annular shape (including a substantially annular shape). Each of the teeth 22 is provided on the distal end side of the teeth base 22a and the teeth base 22a extending radially inward (rotation center line P side) from the yoke 21 when viewed in a cross section perpendicular to the axial direction. It has the teeth front-end | tip part 22b extended along. A tooth tip surface 22 c is formed on the tooth tip 22 b on the side opposite to the yoke 21. The teeth tip surface 22c is formed in an arc shape centered on the rotation center line P.
In the rotating machine according to the present embodiment, the rotor is rotatably supported in a state where there is a gap (gap) between the rotor tip space 22c and the rotor housing space 24 inside the stator 10. Has been.
A slot 23 is formed by the yoke 21 and two teeth 22 adjacent in the circumferential direction. The slot 23 has a slot opening 23a between the tooth tips 22b of two teeth 22 adjacent in the circumferential direction.
A slot insulating member 25 is provided in the slot 23. As the slot insulating member 25, for example, an insulating member formed into an elastic sheet (film) using polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or the like is used. The stator winding 30 is inserted into the slot 23 with the slot insulating member 25 being disposed.

The end insulating members 40 and 50 are provided on both axial sides of the stator core 20. The end insulating members 40 and 50 are made of, for example, polyethylene sulfide (PPS), polybutylene terephthalate (PBT), liquid crystal polymer (LCP), or the like.
In the present embodiment, since the end insulating members 40 and 50 have the same configuration, the configuration of the end insulating member 40 will be described below. Note that the end insulating members 40 and 50 used in the present embodiment are publicly known (see, for example, JP 2010-252442 A).
The end insulating member 40 includes a plurality of inner wall portions 41 extending along the circumferential direction when viewed in a cross section perpendicular to the axial direction, and an outer wall extending radially outward from the inner wall portion 41 along the circumferential direction. A plurality of connecting portions 43 extending in the radial direction and connecting the inner wall portion 41 and the outer wall portion 42 (in FIG. 1, the connecting portion 43 is illustrated by being blocked by other members. Not). In a state where the end insulating member 40 is disposed on one axial side of the stator core 20, the inner wall portion 41 is disposed at a position facing the tooth tip portion 22 b of the tooth 22, and the outer wall portion 42 is disposed on the yoke 21. It arrange | positions in the position which opposes, and the connection part 43 is arrange | positioned in the position which opposes the teeth base 22a of the teeth 22. FIG. The configuration “arranged at a position facing the tooth base 22 a” includes an aspect in which at least a part thereof overlaps the teeth base 22 a when viewed in a cross section perpendicular to the axial direction.
The inner wall portion 41 corresponds to the “first wall portion” of the present invention, the outer wall portion 42 corresponds to the “second wall portion” of the present invention, and the connection portion 43 corresponds to the “connecting portion” of the present invention. In the rotor abduction type rotating machine, an outer wall portion and an inner wall portion are used as the “first wall portion” and the “second wall portion”, respectively.
In the state where the end insulating member 40 is disposed on one axial side of the stator core 20, the inner wall surface of the inner wall portion 41 (the surface on the rotor side of the first wall portion) is more than the tooth tip surface 22c. It is preferable to configure so as not to jump out to the rotor side. The connection portion 43 of the end insulating member 40 is used when the stator winding 30 is wound around the teeth 22 by a concentrated winding method.

In the present embodiment, in order to prevent insulation failure from occurring at the boundary between the stator core 20 and the end insulating member 40, the slot insulating member 25 is provided from the axial end surface of the stator core 20. It protrudes in the axial direction. The protruding length of the slot insulating member 25 is set in the range of 2 mm to 4 mm in consideration of the insulation distance between the stator winding 30 and the stator core 20.
In the present embodiment, the interphase insulating member 26 is inserted into the slot 23 in order to insulate between the circumferentially adjacent stator windings 30 inserted into the slot 23. As the interphase insulating member 26, an insulating member similar to the slot insulating member 25 can be used. In the present embodiment, as shown in FIG. 2, the sheet-like insulating member is formed by bending and has a V-shape (including a substantially V-shape) when viewed in a cross section perpendicular to the axial direction. An interphase insulating member 26 is used. Note that FIG. 2 is shown in a simplified manner.

Here, as shown in FIG. 1, the stator winding 30 directly wound around the connection portion 43 of the tooth 22 and the end insulating member 40 (50) has one end portion 31 (1) to 31. (4) and the other end portions 32 (1) to 32 (3). Each end of the stator winding 30 is processed according to the method of connecting the stator winding 30. For example, in the case of star connection, one end of a three-phase (U-phase, V-phase, W-phase) stator winding is connected to a neutral point, and the other end is pulled out to the outside. It is. In the present embodiment, four star-connected stator windings are connected in parallel. One end portions 31 (1) to 31 (4) of the stator winding 30 shown in FIG. 1 are U-phase, V-phase, and W-phase stators connected to the neutral point, respectively. The one end of the winding 30 is bundled for each star connection. One end 31 (1) to 31 (4) of the stator winding 30 connected to the neutral point is usually covered with a connection point protection member. Further, the other end portions 32 (1) to 32 (3) of the stator winding 30 are respectively connected to the other end portions of the four stator windings 30 of U phase, V phase, and W phase for each phase. Represents a bundle.
The end portions 31 (1) to 31 (4) of the stator winding 30 correspond to the “end portion of the stator winding housed in the housing groove” or “one end portion of the stator winding” of the present invention. The end portions 32 (1) to 32 (3) of the stator winding 30 correspond to “the other end portion of the stator winding” of the present invention.
The method of connecting the stator windings 30, the number of stator windings 30 connected in parallel, and the method of pulling out the ends of the stator windings 30 can be selected as appropriate.
In the present specification, the numbers (1), (2), (3), (4) and the like in parentheses attached to the respective symbols are merely for simplifying the description, and Does not indicate that they are different. That is. Those with the same sign excluding the number in parentheses are equivalent.

  In the present embodiment, the end portions 31 (1) to 31 (4) and 32 (1) to 32 () of the stator winding 30 wound around the connection portion 43 between the tooth 22 and the end insulating member 40 (30). 3) is arranged between the inner wall 41 and the outer wall 42 of one end insulating member 40. Further, the end portions 31 (1) to 31 (4) and 32 (1) to 32 (3) of the stator winding 30 disposed between the inner wall portion 41 and the outer wall portion 42 of the end portion insulating member 40 are provided. An accommodation member 60 is provided to prevent the movement.

The housing member 60 can be formed of the same material as the end insulating members 40 and 50. As illustrated in FIGS. 5 to 8, the housing member 60 includes a base 61, a housing groove forming portion 62, and an outer wall portion 63.
The base 61 extends along the radial direction and extends along the circumferential direction. In the present embodiment, the base 61 has a ring shape when viewed in a cross section perpendicular to the axial direction.
The housing groove forming portion 62 protrudes from the base portion 61 toward the end insulating member 40 along the axial direction and extends along the circumferential direction. The housing grooves 65 (1) to 65 (65) that house the ends 31 (1) to 31 (4) of the stator winding 30 on the side of the base 61 opposite to the end insulating member 40 by the housing groove forming portion 62. 4) is formed. The accommodation grooves 65 (1) to 65 (4) are open on the base surface 61 side of the base 61 opposite to the end insulating member 40. The shape of the accommodation grooves 65 (1) to 65 (4) is formed into an appropriate shape that can accommodate the end portions 31 (1) to 31 (4) of the stator winding 30. In the present embodiment, the accommodation grooves 65 (1) to 65 (4) are formed so as to extend along the circumferential direction when viewed in a cross section perpendicular to the axial direction. That is, as shown in FIG. 6, the accommodation groove 65 (3) is formed by the wall surfaces 65 a (3) and 65 b (3) arranged to face each other along the radial direction. The wall surfaces 65a (3) and 65b (3) extend in parallel (including substantially parallel) along the circumferential direction. The wall surface 65b (3) is disposed on the radially outer side than the wall surface 65a (3). The same applies to the other receiving grooves. In FIG. 5, the accommodation grooves 65 (1) to 65 (4) are formed so as to have the same radial length from the rotation center (including substantially the same), but the radial direction from the rotation center. You may form so that length may differ.
The outer wall portion 63 is provided on the outer side in the radial direction from the housing groove forming portion 62, extends from the base portion 61 to the end insulating member 40 side along the axial direction, and extends along the circumferential direction.

In the present embodiment, the receiving groove forming portion 62 protruding (extending) from the base portion 61 toward the end insulating member 40 along the axial direction has an inner periphery of the receiving groove forming portion 62 on the radially inner side. A wall surface 62a used as a surface is formed along the circumferential direction, and a wall surface 62b is formed along the circumferential direction on the radially outer side (side facing the outer wall portion 63).
Further, the outer wall 63 extending toward the end insulating member 40 along the axial direction from the base 61 has a wall surface 63a along the circumferential direction on the radially inner side (the side facing the housing groove forming portion 62). A wall surface 63b that is formed and used as the outer peripheral surface of the housing member 60 is formed along the circumferential direction on the radially outer side.
Then, the end insulation of the base 61 is insulated by the wall surface (wall surface on the side facing the outer wall portion 63) 62b of the housing groove forming portion 62 and the wall surface (wall surface on the side facing the housing groove forming portion 62) 63a of the outer wall portion 63. On the member 40 side, an accommodation space 64 in which the end portions 31 (1) to 31 (4) and 32 (1) to 32 (3) of the stator winding 30 are disposed is formed.

The housing member 60 is attached to the end insulating member 40. In the present embodiment, an attachment comprising an elastic hook-like claw provided on one of the housing member 60 and the end insulating member and a step provided on the other and engageable with the claw. The housing member 60 is attached to the end insulating member 40 by the portion. Various other known methods can be used as a method of attaching the accommodating member 60 to the end sleeper member 40.
At this time, the accommodation space 64 of the accommodation member 60 is disposed between the inner wall portion 41 and the outer wall portion 42 of the end insulating member 40, and the end portions 31 (1) to 31 (4) of the stator winding 30. And the accommodating member 60 is attached to the edge part insulating member 40 so that it may be arrange | positioned in the position facing 32 (1) -32 (3). As a result, the end portions 31 (1) to 31 (4) and 32 (1) to 32 (3) of the stator winding 30 can be prevented from popping out in the axial direction (the direction of the rotation center line P). .
Further, the end portions 31 (1) to 31 (4) and 32 (1) to 32 (3) of the stator winding 30 are prevented from moving due to vibration or the like when arranged together in the accommodation space 64. be able to. For this reason, as shown in FIG. 6, the wall surface (wall surface forming the inner peripheral surface of the accommodation space 64) 62 b of the accommodation groove forming portion 62 is inclined as seen in a cross section along the radial direction. . In the present embodiment, the inclination direction of the wall surface 62 b is such that the end portions 31 (1) to 31 (4) and 32 (1) to 32 (3) of the stator winding 30 are radially outward in the accommodation space 64. It is set to be sent to. That is, the distance between the rotation center line P and the wall surface 62b is such that the end insulating member 40 side (lower side in FIG. 6) is shorter than the side opposite to the end insulating member 40 (upper side in FIG. 6). Is set. As a result, the end portions 31 (1) to 31 (4) and 32 (1) to 32 (3) of the stator winding 30 are moved radially outward in the accommodation space 64, so that they are moved by vibration or the like. Can be prevented.
Note that either the wall surface (wall surface forming the inner peripheral surface of the storage space 64) 62b of the storage groove forming portion 62 or the wall surface (wall surface forming the outer peripheral surface of the storage space 64) 63a of the outer wall portion 63 is inclined. The inclination direction can be selected as appropriate.

The housing member 60 has a communicating portion that communicates the end insulating member 40 side of the base 61 and the side of the base 61 opposite to the end insulating member 40. In the present embodiment, communication portions 66 (1) to 66 (4) and 67 are provided.
The communication portions 66 (1) to 66 (4) respectively connect the end portions 31 (1) to 31 (4) of the stator winding 30 from the end insulating member 40 side of the base portion 61 to the end portion of the base portion 61. It is for passing along the axial direction on the opposite side to the insulating member 40. The communication portions 66 (1) to 66 (4) communicate with one end of the accommodation grooves 65 (1) to 65 (4) along the circumferential direction. As a result, the end portions 31 (1) to 31 (4) (the end portion including the tip) of the stator winding 30 are passed through the communication portions 66 (1) to 66 (4) and then the communication portion 66 ( 1) to 66 (4) are accommodated in accommodation grooves 65 (1) to 65 (4) having one end communicating therewith. In FIG. 5, only the end portions 31 (1) and 31 (3) of the end portions 31 (1) to 31 (4) of the stator winding 30 are illustrated. Therefore, the end portions 31 (1) to 31 (4) of the stator winding 30 can be prevented from moving due to vibration or the like.
The communication portion 67 extends the end portions 32 (1) to 32 (3) of the stator winding 30 in the axial direction from the end insulating member 40 side of the base portion 61 to the side opposite to the end insulating member 40 of the base portion 61. It is for passing. The end portions 32 (1) to 32 (3) of the stator winding 30 are pulled out after passing through the communication portion 67. As a method of pulling out the end portions 32 (1) to 32 (3) to the outside, a method of pulling out the end portions 32 (1) to 32 (3) as they are, or a method of pulling out the end portions 32 (1) to 32 (3). It is possible to use a method in which the lead wire is pulled out to the outside. In the present embodiment, the end portions 32 (1) to 32 (3) of the stator winding 30 are pulled out as they are. The “end portion of the stator winding” of the present invention includes not only the end portion of the stator winding itself but also a lead wire connected to the end portion of the stator winding.
The communication portions 66 (1) to 66 (4) correspond to the “communication portion” or “first communication portion” of the present invention, and the communication portion 67 corresponds to the “second communication portion” of the present invention. .

Since the receiving grooves 65 (1) to 65 (4) are open on the base surface 61a side of the base 61, the end portions 31 (1) to 31 (4) of the stator winding 30 are inserted into the receiving grooves 65 (1). ~ 65 (4) can be easily accommodated. Here, the end portions 31 (1) to 31 (4) of the stator winding 30 may come out of the openings of the receiving grooves 65 (1) to 65 (4). For this reason, a holding portion (including a holding structure) for preventing the end portions 31 (1) to 31 (4) of the stator winding 30 from coming out of the receiving grooves 65 (1) to 65 (4) is provided. preferable.
In the present embodiment, the end portions 31 (1) to 31 (4) of the stator winding 30 housed in the housing grooves 65 (1) to 65 (4) 60 is fixed to the base 61. As the cord 80, for example, a polyester cord (polyester cord, polyester braided cord), nomex cord, PPS cord, Vectran cord, polyester / nomex mixed (braided) cord, or the like is used. As the string 80, a thread can be used. The string 80 corresponds to the “holding unit” of the present invention.
In the present embodiment, in order to facilitate the work of fixing the end portions 31 (1) to 31 (4) to the base portion 61 of the housing member 60 using the string 80, a groove for passing the string 80 is formed. ing. That is, as shown in FIGS. 5 to 7, the housing member 60 has a groove (string insertion groove) 68 (on the base surface 61 a of the base portion 61, the wall surface 62 a of the housing groove forming portion 62, and the wall surface 63 b of the outer wall portion 63. 1) to 68 (4) are formed. Then, the end portions 31 (1) to 31 (4) of the stator winding 30 are passed through the grooves 68 (1) to 68 (4) in a state where the end portions 31 (1) to 31 (4) are received in the receiving grooves 65 (1) to 65 (4). The end portions 31 (1) to 31 (4) are fixed to the base portion 61 using the laced string 80. The grooves 68 (1) to 68 (4) can be omitted.

  In this embodiment, since the end of the stator winding (the end connected to the common point) is accommodated in the accommodation groove (at least the tip of the end is accommodated), the end of the stator winding is It is possible to prevent movement due to vibration or the like. In addition, since the housing member is provided on the side of the end insulating member opposite to the stator core along the axial direction, and the housing groove is provided on the side of the housing member opposite to the end insulating member, the stator winding Can be easily accommodated in the accommodation groove. In addition, a housing space for arranging the end of the stator winding is formed by using the wall surface of the housing groove forming portion that forms the housing groove, and the end of the stator winding moves out of the housing space. Is preventing. Thereby, it is possible to effectively prevent the end of the stator winding from moving at a low cost.

  Next, another embodiment of the rotating machine of the present invention will be described. In addition, since other embodiment described below is different only in the holding portion (holding structure) of the storage member, only the configuration of the storage member will be described.

A housing member 160 used in the stator of the rotating machine according to the second embodiment is shown in FIGS. 9 and 10.
The housing member 160 includes a base portion 161, a housing groove forming portion 162, and an outer wall portion 163, similarly to the housing member 60 of the first embodiment.
The housing member 160 has housing grooves 165 (1) to 165 (4) that are open on the base plane 161 a side on the side of the base 161 opposite to the end insulating member 40. The housing grooves 165 (1) to 165 (4) extend along the circumferential direction when viewed in a cross section perpendicular to the axial direction. For example, as shown in FIG. 10, the housing groove 165 (3) is disposed on the outer side in the radial direction from the wall surface 165a (3) extending along the circumferential direction and the wall surface 165a (3). It is formed by the wall surface 165b (3) extended along.

In the present embodiment, convex portions 171 (1) to 171 (4) and concave portions 172 (1) to 172 (4) are provided in the accommodation grooves 165 (1) to 165 (4). For example, as shown in FIG. 10, the wall surface 165a (1) forming the accommodation groove 165 (1) is provided with a convex portion 171 (1) protruding into the accommodation groove 165 (1). Further, the housing groove 165 (1) is formed at a location facing the convex portion 171 (1) across the housing groove 165 (1) along the radial direction on the wall surface 165b (1) forming the housing groove 165 (1). ), A recess 172 (1) is provided.
Further, in the present embodiment, the wall surface 171a (1) and the wall surface 172a (1) of the convex portion 171 (1) and the concave portion 172 (1) facing each other are inclined in the same direction. In the present embodiment, as shown in FIG. 10, the distance between the rotation center line P and the wall surface 171a (1) (172a (1)) is the end insulating member 40 side (the bottom of FIG. 10). Side) is inclined so as to be shorter than the side opposite to the end insulating member 40 (upper side in FIG. 10). Preferably, the wall surface 171a (1) of the convex portion 171 (1) extends from the wall surface 165a (1) of the receiving groove 165 (1), and the wall surface 172a (1) of the recessed portion 172 (1) is the receiving groove. It is formed to extend from the wall surface 165b (1) of 165 (1).
The housing member 160 is similar to the housing member 60 in that the end portions 31 (1) to 31 (4) of the stator winding 30 are connected to the communicating portions 166 (1) to 166 (4) in the axial direction. 32 (1) to 32 (3) are provided with a communicating portion 167 passing through in the axial direction, and grooves 168 (1) to 168 (4) into which the string 80 is inserted.
In the present embodiment, for example, when the end 31 (1) of the stator winding 30 is inserted into the receiving groove 165 (1), as shown in FIG. In the end portion 31 (1), the end portion 31 (1) or the concavo-convex portion of the stator winding 30 is elastically deformed in the radial direction along the convex portion 171 (1) and the concave portion 172 (1). Further, the end 31 (1) of the stator winding 30 is formed by the wall surface 171a (1) of the convex portion 171 (1), the wall surface 172a (1) of the concave portion 172 (1), and the receiving groove 165 (1). It is sandwiched between the wall surfaces 165a (1) and 165b (1). As a result, the end 31 (1) of the stator winding 30 is held in the accommodation groove 165 (1). The same applies to the end portions 31 (2) to 31 (4).
In the present embodiment, the convex portions 171 (1) to 171 (4) and the concave portions 172 (1) to 172 (4) are the “holding portion that holds the end portion of the stator winding in the receiving groove” of the present invention. ".
In addition, you may provide multiple combinations of a convex part and a recessed part along the circumferential direction.

A housing member 260 used in the stator of the rotating machine according to the third embodiment is shown in FIGS. 11 and 12.
The housing member 260 according to the third embodiment includes a base 261, a housing groove forming portion 262, and an outer wall portion 263, similarly to the housing member 60 according to the first embodiment. The accommodation member 260 has accommodation grooves 265 (1) to 265 (4) that are open on the base plane 261 a side on the side opposite to the end insulating member 40 of the base 261.
Further, the accommodating grooves 265 (1) to 265 (4) are provided with convex portions 271 (1) to 271 (4) and concave portions 272 (1) to 272 (4). In the present embodiment, the arrangement positions of the convex portions 271 (1) to 271 (4) and the concave portions 272 (1) to 272 (4) are different from those of the second embodiment. For example, the wall surface 265b (1) forming the accommodation groove 265 (1) is provided with a convex portion 271 (1) protruding into the accommodation groove 265 (1). Further, a concave portion 272 (1) that is recessed from the housing groove 265 (1) at a location facing the convex portion 271 (1) along the radial direction on the wall surface 265a (1) forming the housing groove 265 (1). Is provided.
Further, in the present embodiment, the wall surface 271a (1) and the wall surface 272a (1) of the convex portion 271 (1) and the concave portion 272 (1) facing each other are inclined in the same direction. In the present embodiment, as shown in FIG. 12, the distance between the rotation center line P and the wall surface 271a (1) (272a (1)) is the end insulating member 40 side (the bottom of FIG. 12). Side) is inclined so as to be longer than the side opposite to the end insulating member 40 (upper side in FIG. 12). Preferably, the wall surface 271a (1) of the convex portion 271 (1) extends from the wall surface 265b (1) of the housing groove 265 (1), and the wall surface 272a (1) of the recess 272 (1) is formed of the housing groove. 265 (1) is formed to extend from wall surface 265a (1).
Note that, like the housing member 60, the housing member 260 includes communication portions 266 (1) to 266 (4) that pass through the end portions 31 (1) to 31 (4) of the stator winding 30 in the axial direction. 32 (1) to 32 (3) have a communicating portion 267 that passes in the axial direction, and grooves 268 (1) to 268 (4) into which the string 80 is inserted.
In the present embodiment, for example, when the end 31 (1) of the stator winding 30 is inserted into the receiving groove 265 (1), as shown in FIG. In the end portion 31 (1), the end portion 31 (1) or the concavo-convex portion of the stator winding 30 is elastically deformed in the radial direction along the convex portion 271 (1) and the concave portion 272 (1). Further, the end 31 (1) of the stator winding 30 is formed by the wall surface 271a (1) of the convex portion 271 (1), the wall surface 272a (1) of the concave portion 272 (1), and the receiving groove 265 (1). It is sandwiched between the wall surfaces 265a (1) and 265b (1). As a result, the end portion 31 (1) of the stator winding 30 is held in the accommodation groove 265 (1). The same applies to the end portions 31 (2) to 31 (4).
In the present embodiment, the convex portions 271 (1) to 271 (4) and the concave portions 272 (1) to 272 (4) are the “holding portion that holds the end portion of the stator winding in the housing groove” of the present invention. ".
In addition, you may provide multiple combinations of a convex part and a recessed part along the circumferential direction.

A housing member 360 used in the stator of the rotating machine according to the fourth embodiment is shown in FIGS. 13, 14, and 15.
The housing member 360 of the fourth embodiment has a base 361, a housing groove forming portion 362, and an outer wall portion 363, like the housing member 60 of the first embodiment. In addition, the housing member 360 has housing grooves 365 (1) to 365 (4) that are open on the base plane 361a side on the side of the base 361 opposite to the end insulating member 40.
In the present embodiment, an insertion groove (holding member insertion groove) for inserting the holding member is formed on the wall surface that forms the accommodation grooves 365 (1) to 365 (4), and the holding groove is held in the insertion groove. A locking hole for locking the member is formed. For example, as shown in FIG. 14, the insertion groove 371 extending along the axial direction on the radially opposing wall surfaces 365a (1) and 365b (1) forming the accommodation groove 365 (1). (1) and 372 (1) are formed. Further, engaging holes 373 (1) and 374 (1) are formed which communicate with the insertion grooves 371 (1) and 372 (1) and extend along the radial direction.
In the present embodiment, a holding member 390 shown in FIG. 15 is used. The holding member 390 has a main body portion 391 and convex portions 392 and 393. The main body 391 is formed in a U-shaped cross section having a pair of legs. The main body 391 is configured to be elastically deformable in a direction in which the pair of legs are separated from each other. The convex portions 392 and 393 are provided outside the pair of leg portions.
Note that the housing member 360 is connected to the end portions 31 (1) to 31 (4) of the stator winding 30 in the axial direction in the same manner as the housing member 60. 32 (1) to 32 (3) have a communicating portion 367 passing in the axial direction and grooves 368 (1) to 368 (4) into which the string 80 is inserted.
In the present embodiment, the end 31 (1) is held by the holding member 390 in a state where the end 31 (1) of the stator winding 30 is inserted into the accommodation groove 365 (1). That is, with the main body 391 elastically deformed, both legs are inserted into the insertion grooves 371 (1) and 372 (1), and the protrusions 392 and 393 provided on both legs are connected to the locking holes 373 ( 1) and 374 (1). As a result, the end 31 (1) is held in the accommodation groove 365 (1). The same applies to the end portions 31 (2) to 31 (4).
In the present embodiment, the groove portions 371 (1) and 372 (1), the locking holes 373 (1) and 374 (1), and the holding member 390 are connected to the end portion of the stator winding in the housing groove. Corresponds to the “holding part to hold”.

A housing member 460 used in the stator of the rotating machine according to the fifth embodiment is shown in FIGS. 16 and 17.
The housing member 460 of the fifth embodiment has a base portion 461, a housing groove forming portion 462, and an outer wall portion 463, similarly to the housing member 60 of the first embodiment. The housing member 460 includes housing grooves 465 (1) to 465 (4) that are open on the side of the base plane 461 a on the side opposite to the end insulating member 40 of the base 461.
Further, in the present embodiment, stepped portions 471 (1) to 471 (4) and 472 (1) to 472 (4) are formed on the wall surface forming the housing grooves 465 (1) to 465 (4). . The step portions 471 (1) to 471 (4) and 472 (1) to 472 (4) are used as marks for locations where welding is performed.
Note that the housing member 460 has communication portions 466 (1) to 466 (4) that pass through the end portions 31 (1) to 31 (4) of the stator winding 30 in the axial direction, similarly to the housing member 60, and end portions. 32 (1) to 32 (3) have a communicating portion 467 passing in the axial direction and grooves 468 (1) to 468 (4) into which the string 80 is inserted.
In the present embodiment, the receiving grooves 465 (1) to 465 are inserted with the end portions 31 (1) to 31 (4) of the stator winding 30 inserted into the insertion grooves 465 (1) to 465 (4). The wall surface forming (4) is welded, and welded portions are formed in the housing grooves 465 (1) to 465 (4). For example, as shown in FIG. 17, the wall surfaces 465a (1) and 465b (1) forming the receiving groove 465 (1) with the end 31 (1) inserted into the receiving groove 465 (1). The portions of the step portions 471 (1) and 472 (1) formed in () are heated to form the welded portion 473 in the accommodation groove 465 (1). As a result, the end portion 31 (1) of the stator winding 30 is held in the accommodation groove 465 (1). The same applies to the other end portions 31 (2) to 32 (4).
In the present embodiment, the welded portion 473 formed in the receiving grooves 465 (1) to 465 (4) corresponds to the “holding portion that holds the end of the stator winding in the receiving groove” of the present invention. To do.
The step portions 471 (1) to 471 (4) and 472 (1) to 472 (4) are omitted, and appropriate portions of the wall surface forming the accommodation grooves 465 (1) to 465 (4) are heated. A welded portion may be formed.

A housing member 560 used in the stator of the rotating machine according to the sixth embodiment is shown in FIGS. 18 and 19.
The housing member 560 of the sixth embodiment has a base portion 561, a housing groove forming portion 562, and an outer wall portion 563, similarly to the housing member 60 of the first embodiment. The housing member 560 includes housing grooves 565 (1) to 565 (4) that are open on the base plane 561a side on the side opposite to the end insulating member of the base 561.
Moreover, in this Embodiment, the convex part which protrudes in the accommodation grooves 565 (1) -565 (4) is provided in the wall surface which forms the accommodation grooves 565 (1) -565 (4). For example, as shown in FIG. 19, protrusions 571 (3) projecting into the housing groove 565 (3) and wall surfaces 565 a (3) and 565 b (3) forming the housing groove 565 (3) and 572 (3) is formed at a location facing the radial direction. Here, as shown in the partially enlarged view of FIG. 19, the convex portions 571 (3) and 572 (3) have a fixed interval D between the convex portions 571 (3) and 572 (3). It is formed to be smaller than the width of the end portion 31 (3) of the child winding 30. Moreover, it is formed so that the space which can accommodate the edge part 31 (3) is formed in the back (end part insulating member 40 side) from the convex parts 571 (3) and 572 (3). The shape of the convex portion can be set as appropriate. For example, you may form so that it may extend along the circumferential direction.
The housing member 560 is connected to the end portions 31 (1) to 31 (4) of the stator winding 30 in the axial direction, like the housing member 60, and the end portions of the communicating portions 566 (1) to 566 (4). 32 (1) to 32 (3) have a communicating portion 567 passing in the axial direction and grooves 568 (1) to 568 (4) into which the string 80 is inserted.
In the present embodiment, when inserting the end portions 31 (1) to 31 (4) of the stator winding 30 into the receiving grooves 565 (1) to 565 (4), the receiving grooves 565 (1) to 565 (1) to It arrange | positions behind the convex part currently formed in 565 (4) (end part insulating member side). For example, when the end portion 31 (3) of the stator winding 30 is accommodated in the accommodation groove 565 (3), the end portion 31 (3) is provided with the convex portions 571 (3) and 572 (3). It is arrange | positioned in the back (end part insulation member side) from the location currently provided. As a method of arranging the end 31 (3) of the stator winding 30 behind the place where the convex portions 571 (3) and 572 (3) are provided, for example, the end 31 of the stator winding 30 is provided. (3) Alternatively, a method of passing between the convex portions 571 (3) and 572 (3) using elastic deformation of the convex portions 571 (3) and 572 (3) can be used. Alternatively, the tip of the end portion 31 (3) of the stator winding 30 is moved from one end side in the circumferential direction of the housing groove 31 (3) from a place where the convex portions 571 (3) and 572 (3) are provided. It is possible to use a method of inserting into the space behind (the end insulating member side). As a result, the end 31 (3) of the stator winding 30 is held in the accommodation groove 565 (3). The same applies to the other ends.
In the present embodiment, the convex portions 571 (3) and 572 (3) formed in the accommodation groove 565 (3) are the “holding portion that holds the end portion of the stator winding in the accommodation groove” of the present invention. Corresponding to
The method for reducing the radial width in the accommodation groove 565 (3) is not limited to the method of forming the convex portions 571 (3) and 572 (3), and the convex portions 571 (3) and 572 ( A method of forming one of 3) can also be used.

Next, the stator 10 of the rotary machine of 7th Embodiment is demonstrated with reference to FIGS. FIG. 20 is a perspective view of the stator 10 according to the seventh embodiment. FIG. 21 is a perspective view of the housing member 660 used in the stator 10 of the seventh embodiment, and FIG. 22 is a sectional view taken along line XXII-XXII in FIG. 23 is a perspective view of the back side of the housing member 660, and FIG. 24 is a sectional view taken along line XXIV-XXIV in FIG.
Similar to the housing member 60, the housing member 660 of the seventh embodiment includes a base 661, a housing groove forming portion 662, and an outer wall portion 663. In the present embodiment, the wall surface 662a of the accommodation groove forming portion 662 is formed with a plurality of convex portions 662X on the end insulating member 40 side. As shown in FIG. 20, the convex portion 662X is disposed between the inner walls of the end insulating member. Thereby, it is possible to prevent the end portions 31 (1) to 31 (4) and 32 (1) to 32 (4) of the stator winding 30 from protruding inward in the radial direction.
Further, in the housing members of the first to sixth embodiments, the end portions 31 (1) to 31 (4) of the stator winding 30 are housed in different housing grooves, but the housing member of the present embodiment. In 660, two of the end portions 31 (1) to 31 (4) of the stator winding 30 are accommodated in one accommodation groove. That is, the housing member 660 has housing grooves 665 (1) and 665 (2) that are open on the base plane 661 a side on the side opposite to the end insulating member 40 of the base 661. Further, convex portions 671 (1) and 671 (2) projecting into the housing grooves 665 (1) and 665 (2) are formed on one of the wall surfaces forming the housing grooves 665 (1) and 665 (2). On the other side, recesses 672 (1) and 672 (2) that are recessed from the receiving grooves 665 (1) and 665 (2) are formed. The convex portions 671 (1) and 671 (2) and the concave portions 672 (1) and 672 (2) are formed in the stator winding 30 at the back of the receiving grooves 665 (1) and 665 (2) (on the end insulating member side). Are formed so that the end portions 31 (1) to 31 (4) can be inserted into the space from both ends along the circumferential direction. Has been. In the present embodiment, as shown in FIG. 22, the wall surfaces 671a (2) and 672a (2) of the convex portion 671 (2) and the concave portion 672 (2) facing each other are cross sections along the radial direction. Looking and tilted.
Further, the housing member 660 includes communication portions 666 (1) to 666 (4) passing through the end portions 31 (1) to 31 (4) of the stator winding 30 in the axial direction, and end portions 32 (1) to 32 ( 3) A communication portion 667 that passes the shaft in the axial direction is provided. In the present embodiment, both ends in the circumferential direction of the housing grooves 665 (1) and 665 (2) communicate with different communication portions. For example, as shown in FIG. 21, one end in the circumferential direction of the accommodation groove 665 (1) communicates with the communication groove 666 (1), and the other end in the circumferential direction communicates with the communication groove 666 (2). Yes.

In the present embodiment, when the end portions 31 (1) to 31 (4) of the stator winding 30 are accommodated in the accommodating grooves 665 (1) and 665 (2), the end portions 31 (1) to 31 (1) to The tip of 31 (4) is hidden under (back) the convex portions 671 (1) and 671 (2). For example, as shown by a broken line in FIG. 21, the tip of the end portion 31 (1) is located below the convex portion 671 (1) (on the end insulating member 40 side) from one end side along the circumferential direction. The tip of the end portion 31 (2) is hidden under the convex portion 671 (1) (on the end insulating member 40 side) from the other end side along the circumferential direction. Thereby, the end portions 31 (1) and 31 (2) are held in the accommodation groove 665 (1). The same applies to the end portions 31 (3) and 31 (4).
In the present embodiment, the convex portions 671 (1), 671 (2) and the concave portions 672 (1), 672 (2) are the “holding portion that holds the end portion of the stator winding in the housing groove” of the present invention. ".
Note that the recesses 672 (1) and 672 (2) can be omitted. Moreover, the shape of convex part 671 (1) and 671 (2) accommodates edge part 31 (1) -31 (4) in the space of the back | inner side of convex part 671 (1) and 671 (2). It can be formed into various possible shapes. For example, the wall surfaces 665a (1) and 665b (1) forming the housing groove 665 (1) are connected to each other on the base surface 661a side by the connecting member, so that the inner side of the connecting member (the end insulating member 40 side) is connected. A method of forming a space that can accommodate the end portion can also be used.

A housing member 760 used in the stator of the rotating machine according to the eighth embodiment is shown in FIGS.
The housing member 760 of the eighth embodiment has a base portion 761, a housing groove forming portion 762, and an outer wall portion 763, similarly to the housing member 60 of the first embodiment.
The housing member 760 has housing grooves 765 (1) and 765 (2) that are open on the base plane 761a side on the side of the base portion 761 opposite to the end insulating member. The housing groove forming portion 762 has a plurality of convex portions 762X formed on the end insulating member 40 side. The convex portion 762X has the same effect as the convex portion 662X.
Similarly to the housing member 660, the housing member 760 houses two ends of the end portions 31 (1) to 31 (4) of the stator winding 30 in one housing groove. In the present embodiment, the convex portions 771 (1) and 773 (projecting into the housing grooves 765 (1) and 765 (2) are formed on one of the wall surfaces forming the housing grooves 765 (1) and 765 (2). 1), 771 (2) and 773 (2) are formed, and on the other hand, recesses 772 (1), 774 (1) and 772 (recessed from the receiving grooves 765 (1) and 765 (2) are formed. 2) and 774 (2) are formed. The convex portions 771 (1), 773 (1), 771 (2) and 773 (2) and the concave portions 772 (1), 774 (1), 772 (2) and 774 (2) are opposed to each other in the radial direction. Is arranged. Moreover, the wall surface which opposes the radial direction of a convex part and a recessed part inclines. For example, as shown in FIG. 26, the opposing wall surfaces 773a (1) and 774a (1) of the convex portion 773 (1) and the concave portion 774 (1) are inclined when viewed in a cross section along the radial direction. is doing.
In the present embodiment, the end portions 31 (1) to 31 (4) of the stator winding 30 are inserted into the receiving grooves 765 (1) and 765 (2) in a state of being elastically deformed. For example, when the end portion 31 (1) is inserted into the accommodation groove 765 (1), the end portion 31 (1) has a convex portion 771 (1) and a concave portion 772 as shown in FIG. It is elastically deformed in the radial direction along (1). Further, the end 31 (1) includes the wall surface 771a (1) of the convex portion 771 (1) and the wall surface 772a (1) of the concave portion 772 (1) and the wall surfaces 765a (1) and 765b ( 1). As a result, the end 31 (1) is held in the accommodation groove 765 (1). Further, when the end portion 31 (2) is inserted into the receiving groove 765 (1), the end portion 31 (2) has the convex portion 773 (1) and the concave portion 774 as shown in FIG. It is elastically deformed in the radial direction along (1). Further, the end 31 (2) includes the wall surface 773a (1) of the convex portion 773 (1), the wall surface 774a (1) of the concave portion 774 (1), and the wall surfaces 765a (1) and 765b of the housing groove 765 (1). It is sandwiched between (1). As a result, the end 31 (2) is held in the accommodation groove 765 (1). The same applies to the end portions 31 (3) and 31 (4).
In the present embodiment, the convex portions 771 (1), 773 (1), 771 (2), 773 (2) and the concave portions 772 (1), 774 (1), 772 (2), 774 (2) This corresponds to the “holding portion that holds the end portion of the stator winding in the receiving groove” of the present invention.
In addition, although the convex part was formed in the inner wall surface of the inner peripheral side that forms the housing groove, and the concave portion was formed in the inner wall surface of the outer circumferential side that formed the housing groove, the concave portion was formed in the inner wall surface on the inner wall side, and the outer wall side A convex portion may be formed on the inner wall surface (see the third embodiment). Moreover, the inclination direction of the wall surface which a convex part and a recessed part oppose can be set suitably. Further, the two end portions of the stator winding may be accommodated in one accommodation groove in a state where they are connected at a neutral point (common point). For example, the end portions 31 (1) and 31 (2) of the stator winding 30 may be accommodated in the accommodation groove 765 (1) in a state where they are connected at the neutral point. In this case, a plurality of pairs of convex portions and concave portions may be provided, or only one pair may be provided.

The present invention is not limited to the configuration described in the embodiment, and various changes, additions, and deletions are possible.
Although the accommodation member having the base, the accommodation groove forming portion, and the outer wall portion is used, the accommodation member only needs to have at least the accommodation groove forming portion. For example, a housing member having a housing groove forming portion and a housing member having a base portion and a housing groove forming portion can be used.
One end or both ends along the circumferential direction of the housing groove are connected to a communication portion (first communication portion) that passes through one end portion (end portion connected to the common point) of the stator winding in the axial direction. However, the accommodation groove and the communication portion (first communication portion) may not be communicated.
Although the other end portion (end portion to be pulled out) of the stator winding is pulled out in the axial direction, it can be pulled out in the radial direction. In this case, the other end of the stator winding can be drawn out from the end insulating member in the radial direction. That is, the housing member only needs to have a communication portion (first communication portion) that passes one end of the stator winding in the axial direction, and a communication portion (first contact) that passes the other end in the axial direction. 2 communication portions) can be omitted.
Although the radially inner wall surface forming the accommodation space is inclined so that the stator winding is disposed radially outside, it may be inclined so that the stator winding is disposed radially inside. . Moreover, although the radially inner wall surface forming the accommodation space is inclined, the radially outer wall surface forming the accommodation space may be inclined.
As a method of holding the end of the stator winding in the receiving groove, a method of filling the resin into the receiving groove after storing the end of the stator winding in the receiving groove may be used. For example, an epoxy resin, a silicon resin, a polyurethane resin, a polyvinyl chloride resin, a thermoplastic resin, or the like can be used as the resin filled in the housing groove. In addition, by using a resin having an insulating property as the resin, the end of the stator winding can be more effectively insulated from other members. In this case, the resin filled in the accommodation groove corresponds to the “holding portion” of the present invention.
The holding portion that holds the end portion of the stator winding in the accommodation groove is not limited to the holding portion described above. Moreover, any one holding | maintenance part can also be used and it can also be used combining the some holding | maintenance part selected suitably.
A housing member for housing one end of the stator winding is provided on the opposite side of the stator core from the one end insulating member along the axial direction. An accommodation member is provided on the opposite side of the stator core, one end of the stator winding is accommodated in one accommodation member, and the other end of the stator winding is pulled out through the other accommodation member. You may comprise.
Each configuration described in the embodiment can be used alone, or a plurality selected as appropriate can be used in combination.
The present invention can be suitably used as a stator in which a stator winding is wound around a tooth by a concentrated winding method, but can also be used as a stator in which a stator winding is wound around a tooth by another winding method.

10 Stator 20 Stator Core 21 Yoke 22 Teeth 22a Teeth Base 22b Teeth Tip 22c Teeth Tip Surface 23 Slot 24 Rotor Housing Space 25 Slot Insulating Member 26 Interphase Insulating Member 30 Stator Windings 31 (1), 31 (2 ), 31 (3), 31 (4) End of stator winding (one end)
32 (1), 32 (2), 32 (3) End of stator winding (the other end)
40, 50 End insulating member 41 Inner wall (first wall)
42 Outer wall (second wall)
43 Connection portion 60, 160, 260, 360, 460, 560, 660, 760 Housing member 61, 161, 261, 361, 461, 561, 661, 761 Base portion 61a, 161a, 261a, 361a, 461a, 561a, 661a, 761a Base surface 62, 162, 262, 362, 462, 562, 662, 762 Housing groove forming portion 62a, 162a, 262a, 362a, 462a, 562a, 662a, 762a Wall surface (inner circumferential surface of housing member)
62b, 162b, 262b, 362b, 462b, 562b, 662b, 762b Wall surface (wall surface of the accommodation space)
63, 163, 263, 363, 463, 563, 663, 763 Outer wall (wall)
63a, 163a, 263a, 363a, 463a, 563a, 663a, 763a Wall surface (wall surface of the accommodation space)
63b, 163b, 263b, 363b, 463b, 563b, 663b, 763b Wall surface (outer peripheral surface of housing member)
64, 164, 264, 364, 464, 564, 664, 764 receiving spaces 65 (1) to 65 (4), 165 (1) to 165 (4), 265 (1) to 265 (4), 365 (1 ) To 365 (4), 465 (1) to 465 (4), 565 (1) to 565 (4), 665 (1), 665 (2), 765 (1), 765 (2) receiving groove 65a ( 3), 65b (3), 165a (3), 165b (3), 265a (3), 265b (3), 365a (3), 365b (3), 465a (3), 465b (3), 565a ( 3) 565b (3), 665a (1), 665b (1), 765a (2), 765b (2) Wall surface (wall surface of receiving groove)
66 (1) to 66 (4), 166 (1) to 166 (4), 266 (1) to 266 (4), 366 (1) to 366 (4), 466 (1) to 466 (4), 566 (1) to 566 (4), 666 (1) to 666 (4), 766 (1) to 766 (4) Communication portion (first communication portion)
67,167,267,367,467,567,667,767 communication part (second communication part)
68 (1) -68 (4), 168 (1) -168 (4), 268 (1) -268 (4), 368 (1) -368 (4), 468 (1) -468 (4), 568 (1) to 568 (4) groove (string insertion groove)
80 Strings 171 (1) to 171 (4), 271 (1) to 271 (4), 671 (1), 671 (2), 771 (1), 771 (2), 773 (1), 773 (2 ) Convex portions 171a (1), 271a (1), 671a (2), 771a (1) Wall surface (wall surface facing the recess)
172 (1) to 172 (4), 272 (1) to 272 (4), 672 (1), 672 (2), 772 (1), 772 (2), 774 (1), 774 (2) Recess 172a (1), 272a (1), 672a (2), 772a (1) Wall surface (wall surface facing the convex portion)
371 (1) to 371 (4), 372 (1) to 372 (4) Insertion groove (holding member insertion groove)
373 (1), 374 (1) Locking hole (holding member locking hole)
390 Holding member 391 Main body portion 392, 393 Protruding portions 471 (1) to 471 (4), 472 (1) to 472 (4) Stepped portion 473 Welded portions 571 (1), 571 (3), 572 (1), 572 (3) Convex part 662X, 762X Convex part

Claims (14)

A stator comprising a stator core, a stator winding, and end insulating members provided on both axial sides of the stator core,
Along the axial direction, at least one of the end insulating members is provided on the opposite side of the stator core, and includes an accommodating member that accommodates an end of the stator winding,
The housing member is
A base extending along the radial direction;
A communicating portion communicating with the end insulating member side of the base and the side of the base opposite to the end insulating member;
Fixing characterized in that it has at least one receiving groove that is formed on the side of the base opposite to the end insulating member and that receives the end of the stator winding through the communicating portion. Child. The stator according to claim 1,
The stator is characterized in that the receiving groove extends along the circumferential direction. The stator according to claim 1 or 2,
The at least one end insulating member has a wall portion extending along a circumferential direction;
The housing member has a housing groove forming portion that forms the housing groove, and the housing groove forming portion protrudes from the base portion toward the end insulating member along the axial direction and extends along the circumferential direction. And having a wall on the side facing the wall of the end insulating member,
The end portion of the stator winding is disposed between the wall portion of the end insulating member and the wall surface of the housing groove forming portion of the housing member, and is then passed through the communication portion. The stator to be. The stator according to claim 3,
The stator according to claim 1, wherein the wall surface of the housing groove forming portion is inclined as viewed in a cross section along the radial direction. The stator according to any one of claims 2 to 4,
At least one end along the circumferential direction of the housing groove communicates with the communication portion. The stator according to any one of claims 2 to 5,
An end portion of the stator winding that passes through one communication portion is inserted into the housing groove from one end side along the circumferential direction, and the other communication portion is inserted from the other end side along the circumferential direction. An end portion of the stator winding that passes through the portion is inserted. The stator according to any one of claims 1 to 6,
A stator having a holding portion for holding an end portion of the stator winding in the receiving groove.
The stator according to claim 7,
The housing member has a convex portion protruding into the housing groove,
An end portion of the stator winding is held in the receiving groove by the convex portion. The stator according to claim 7,
The housing member has a convex portion projecting into the housing groove, and a concave portion provided at a location facing the convex portion across the housing groove, and recessed from the housing groove,
An end portion of the stator winding is held in the receiving groove by the convex portion and the concave portion. The stator according to claim 9, wherein
A portion of the convex portion and the concave portion facing each other is inclined in the same direction as seen in a cross section along the radial direction. The stator according to any one of claims 7 to 10,
The housing groove is filled with resin in a state where the end of the stator winding is housed,
An end portion of the stator winding is held in the housing groove by the resin. The stator according to any one of claims 7 to 11,
An end portion of the stator winding is fixed to a base portion of the housing member by a string in a state of being housed in the housing groove. The stator according to any one of claims 1 to 12,
An end portion of the stator winding is housed in the housing groove in a state of being connected at a common point.   A stator according to any one of claims 1 to 13 and a rotor are provided, and the rotor is rotatably supported so as to have a gap between the teeth tip surface of the stator. Rotating machine characterized by

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