JP5829059B2 - Stator and rotating machine - Google Patents

Description

  The present invention relates to a stator of a rotating machine, and more particularly to a stator having a stator core and insulating members arranged on both sides in the axial direction of the stator core.

A concentrated winding method is known as a winding method of the stator winding. For example, Patent Document 1 discloses a stator in which a stator winding is wound using a concentrated winding method.
The stator shown in Patent Document 1 has a stator core and insulating members arranged on both sides in the axial direction of the stator core.
The stator core is configured by stacking electromagnetic steel plates punched by a press or the like, and has stator core end faces on both sides in the axial direction. The insulating member is integrally formed of resin and has an insulating member end surface on one side in the axial direction. The stator winding is directly connected to the stator core and the insulating member in a state in which the insulating members are arranged on both sides in the axial direction of the stator core (a state in which the insulating member end faces are opposed to the stator core end faces). Wrapped around.
Moreover, in the stator shown by patent document 1, the recessed part is formed in the stator core end surface, and the convex part which can be fitted in the recessed part formed in the stator member end surface is formed in the insulating member end surface. Yes. By fitting the convex portion formed on the end surface of the insulating member into the concave portion formed on the end surface of the stator core, the insulating member is positioned on the stator core, and the stator core and the insulating member are prevented from being displaced. .

JP 2004-194413 A

When magnetic steel sheets punched out by a press or the like are laminated to constitute a stator core, the boundary portion between the concave portion formed on the end surface of the stator core and the end surface of the stator core has a sharp angular shape (edge). Further, when the insulating member is integrally formed of resin, the base portion of the convex portion formed on the end surface of the insulating member becomes a curved surface (R surface).
The conventional stator has a convex portion so as to protrude directly from the end face of the insulating member. For this reason, when the insulating members are arranged on both sides in the axial direction of the stator core, the edge of the recess (the edge of the boundary between the recess and the end surface of the stator core) and the root of the protrusion (the protrusion and the end surface of the insulating member) A gap (backlash) is generated between the end surface of the stator core and the end surface of the insulating member due to contact with the curved surface of the boundary portion. When a gap is generated between the stator core end surface and the insulating member end surface, the insulating member is damaged by the winding force of the stator winding wound around the stator core and the insulating member, and the insulating member becomes the stator core. There is a risk of falling off the end face.
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 arranging an insulating member in close contact with a stator core.

The present invention is configured as the following stator, rotating machine, and insulating member manufacturing method.
In the following description, “axial direction” means a line passing through the center of the rotor (hereinafter referred to as “stator center line”) in a state where the rotor is rotatably supported with respect to the stator. Indicates the direction. The “circumferential direction” indicates a circumferential direction centered on the center line of the stator when viewed in a cross section perpendicular to the axial direction in a state where the rotor is rotatably supported by the stator. The “radial direction” indicates a direction passing through the center line of the stator as 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 of the present invention includes a stator core, an insulating member, and a stator winding.
The stator core is typically constituted by a plurality of laminated electromagnetic steel plates, and has stator core end faces on both sides in the axial direction. The insulating members are arranged on both sides in the axial direction of the stator core, and have insulating member end faces on one side in the axial direction. The insulating member is formed of a material having insulating characteristics, typically a resin having insulating characteristics, and is formed of a first member extending along the circumferential direction when viewed in a cross section perpendicular to the axial direction. A plurality of second members, which are arranged radially inward of the first member and spaced along the circumferential direction, and extend along the circumferential direction, the first member, and the second members A plurality of connecting members for connecting the members. Usually, the stator core has a yoke extending along the circumferential direction when viewed in a cross section perpendicular to the axial direction, and a plurality of teeth extending radially inward from the yoke. Each tooth includes a tooth base extending in the radial direction from the yoke, and a tooth base provided on the tip side of the tooth base, extending in the circumferential direction and having a tooth tip surface formed on the opposite side of the yoke. It has a tip. The first member, the second member, and the connecting member of the insulating member are disposed at positions facing the yoke, the tooth tip portion, and the tooth base portion of the stator core, respectively. The stator winding is wound around the stator core and the insulating member. As the winding method of the stator winding, typically, a concentrated winding method is used in which the stator core is directly wound around the teeth base portion of the stator core and the connecting member of the insulating member.
A first concave portion is formed on the stator core end surface of the stator core, and a convex portion that can be fitted into the first concave portion formed on the stator core end surface is formed on the insulating member end surface of the insulating member. Has been. Moreover, the 2nd recessed part is formed in the insulating member end surface around the convex part so that it may become depressed from an insulating member end surface. That is, the second concave portion is formed on the end surface of the insulating member so as to be recessed from the end surface of the insulating member, and the convex portion is formed in the second concave portion so that the tip portion protrudes axially from the end surface of the insulating member. Has been.
Positioning means for positioning the insulating member (insulating member end surface) on the stator core (stator core end surface) is configured by the first concave portion formed on the stator core end surface and the convex portion formed on the insulating member end surface. . The shape of the first concave portion and the convex portion can be set to an appropriate shape that allows the convex portion to be fitted into the first concave portion. In addition, the number and the position of the combination of the first concave portion and the convex portion can be set as appropriate. In addition, the formation position of the first recess is preferably set to a position where a desired magnetic flux can flow through the tooth base.
The shape of the second recess is such that the edge of the first recess (the edge of the boundary between the first recess and the end surface of the stator core) and the protrusion when the insulating member is disposed on both axial sides of the stator core. Set to an appropriate shape that can prevent the occurrence of a gap between the insulating member end surface and the stator core end surface due to contact with the base portion (curved surface of the boundary between the convex portion and the insulating member end surface) Is done. Typically, the shape is set such that the end face of the insulating member comes into contact with the end face of the stator core in a state where the edge of the first recess does not contact the base of the protrusion.
In the present invention, since the second concave portion is formed around the convex portion constituting the positioning means on the insulating member end face, the insulation caused by the contact between the edge of the first concave portion and the root portion of the convex portion. Generation | occurrence | production of the clearance gap between a member end surface and a stator stator core end surface can be prevented. Accordingly, the insulating member can be disposed in close contact with the stator core.
Furthermore, in the present invention, at least a part of the convex part and at least a part of the second concave part are formed at locations on the end face of the insulating member corresponding to the connecting member. In addition, most (including all) of the convex portion and the second concave portion may be formed at a location corresponding to the connecting member on the end surface of the insulating member.
“A portion of the end surface of the insulating member corresponding to the connecting member” means “on the insulating member end surface, the side surfaces on both sides in the circumferential direction (the left side surface on the left side in the circumferential direction and the right side surface on the right side in the circumferential direction), the first member Represents the region surrounded by a line intersecting the insulating member end surface with the radially inner peripheral surface of the second member and the radially outer peripheral surface of the second member.
When the stator winding is wound around the coupling portion of the insulating member and the teeth base portion of the stator core, the convex portion formed on the coupling portion and the tooth base portion are formed by the winding force of the stator winding. The fitting state with the first recess is maintained. Thereby, in this invention, the shift | offset | difference of an insulating member and a stator core can be prevented more reliably.
Further, when at least a part, preferably most (including all) of the second recess is formed at a location corresponding to the connecting member on the end face of the insulating member, the first member of the insulating member The size of the outer peripheral surface (the minimum diameter of the circle surrounding the outer peripheral surface of the first member) can be reduced. For this reason, when the rotary machine provided with the stator of this embodiment is incorporated in a compressor or the like, it is possible to prevent the outer peripheral surface of the first member of the insulating member from interfering with other components. In addition, a cooling passage communicating in the radial direction can be secured on the outer peripheral side of the first member of the insulating member.
In addition, since the second recess is formed at a position corresponding to the connecting member on the end face of the insulating member, when the insulating member is integrally formed with a material such as a resin, the fluidity of the material can be improved. A high quality insulating member can be obtained. In addition, the thickness of the insulating member (the thickness in the radial direction of the first member and the second member, the thickness in the axial direction of the connecting member) can be made substantially uniform, and warping or distortion of the insulating member can occur. Can be prevented. In addition, the amount of material used can be reduced. In particular, when the second recess is formed across the portion of the insulating member end surface corresponding to the first member and the portion corresponding to the connecting member, it corresponds to the first member of the insulating member end surface. The thickness of the insulating member can be made more uniform and the amount of material used can be further reduced as compared with the case where the concave portion is separately formed in the portion corresponding to the connecting member on the end surface of the insulating member and the end surface of the insulating member. be able to.
In addition, when a stator core is configured by laminating electromagnetic steel sheets punched out by a press or the like, both ends in the circumferential direction of the teeth base portion of the stator core (the left end on the left side in the circumferential direction) are formed by burrs or sagging. And the rigidity of the stator core may be reduced, and noise and vibration may be generated. In the present invention, the connecting member of the insulating member has side walls (a left side wall on the left side in the circumferential direction and a right side wall on the right side in the circumferential direction) that form the second recesses on both sides in the circumferential direction across the second recess. Therefore, the ends on both sides in the circumferential direction of the teeth base of the stator core are pressed in the axial direction by the side walls on both sides in the circumferential direction of the connecting member of the insulating member. Thereby, the adhesiveness of the edge part of the circumferential direction both sides of the teeth base part of a stator core improves, the rigidity of a stator core increases, and generation | occurrence | production of a sound and a vibration can be suppressed.

In another aspect of the present invention, a communication hole for communicating the connecting member in the axial direction is formed in the second recess. The communication hole should just connect at least one part of a connection member.
When a rotating machine having a stator in which a communication hole communicating with the connecting member in the axial direction is formed in the second recess is used as a motor for driving a compressor, a medium such as a refrigerant or refrigerating machine oil is used as the second medium. It flows through a communicating hole, without staying in a recessed part. Thereby, a stator winding, a stator core, etc. can be cooled effectively.

In another embodiment of the present invention, a third recess is formed at a location corresponding to the connecting member on the end surface of the insulating member.
In this embodiment, since the third recess is formed in the insulating member end surface corresponding to the connecting member, the above-described second recess is formed in the insulating member end surface corresponding to the connecting member. As with the case where the fluidity of the material is increased, a high quality insulating member can be obtained, and the thickness of the insulating member can be made substantially uniform to prevent warping or distortion of the insulating member, The amount of material used can be reduced, and the rigidity of the stator core can be increased by improving the adhesion of the ends on both sides in the circumferential direction of the teeth base of the stator core. In addition, in this form, since the space between the second recess and the third recess is thick, the second recess is located on the end surface of the insulating member corresponding to the first member and the location corresponding to the connecting member. Compared with the case where it forms over, it can raise the intensity | strength of a connection member and can suppress generation | occurrence | production of a sound and a vibration.

In still another embodiment of the present invention, a communication hole for communicating the connecting member in the axial direction is formed in the third recess. The communication hole should just connect at least one part of a connection member.
When a rotating machine having a stator in which a communication hole communicating with the connecting member in the axial direction is formed in the third recess is used as an electric motor for driving a compressor, a medium such as a refrigerant or refrigerating machine oil is used as the third medium. It flows through a communicating hole, without staying in a recessed part. Thereby, a stator winding, a stator core, etc. can be cooled effectively.

In still another embodiment of the present invention, the first member includes a first portion and a second portion that is disposed radially outward from the first portion on the insulating member end surface side. Two recesses are formed so as to extend radially outward from the first portion of the first member.
In the present embodiment, the first portion of the first member excluding the second portion necessary for forming the second recess can be arranged radially inward from the second portion. Thereby, when the rotary machine provided with the stator of this embodiment is incorporated in a compressor or the like, it is possible to prevent the outer peripheral surface of the first portion of the first member of the insulating member from interfering with other components. . In addition, a cooling passage communicating in the radial direction can be secured on the outer peripheral side of the first portion of the first member of the insulating member.

Usually, a slot is formed between two teeth adjacent to the stator core yoke in the circumferential direction, and a slot insulating member is inserted into the slot. Is done. At this time, in order to improve the insulation between the stator winding and the stator core, the slot insulating member is inserted into the slot so as to protrude in the axial direction from the end face of the stator core.
In this way, when the insulating members are arranged on both sides in the axial direction of the stator core with the slot insulating members inserted into the slots so as to protrude from the end surfaces of the stator core, they protrude from the end surfaces of the stator core. The end of the slot insulating member is in the way.
Therefore, in still another embodiment of the present invention, the insulating member end face side portion on the radially inner side (side facing the slot) of the first member and both circumferential sides of the connecting member (side facing the slot) ) At least one of the portions on the end face side of the insulating member is formed on an inclined surface. When the insulating member is disposed on the end surface of the stator core, the inclined surface on the radially inner side (side facing the slot) of the first member and the inclined surface on both sides in the circumferential direction (side facing the slot) of the connecting member are The end portion of the slot insulating member protruding in the axial direction from the end surface of the stator core is set so as to move in a direction (non-interference direction) that does not interfere with the operation of disposing the insulating member. That is, the radially inner inclined surface of the first member is formed such that the distance from the center line of the stator is larger on the insulating member end surface side than on the side opposite to the insulating member end surface. Of the end portion of the slot insulating member protruding in the axial direction from the end surface of the stator core by the radially inner inclined surface of the first member, the portion facing the yoke is radially inward (in the center direction of the slot). ) Further, the inclined surfaces on both sides in the circumferential direction of the connecting member are formed such that the distance between the both sides in the circumferential direction of the connecting member is smaller on the insulating member end surface side than on the opposite side to the insulating member end surface. Of the end portions of the slot insulating member projecting in the axial direction from the end surface of the stator core by the inclined surfaces on both sides in the circumferential direction of the connecting member, the portion facing the teeth base portion of the adjacent teeth is the circumference between the two portions. It moves in the direction in which the interval between directions widens (in the center direction of the slot).
In addition, the structure of this form can also be used when inserting a slot insulation member in a slot in the state which has arrange | positioned the insulation member in the stator core end surface. Moreover, you may form not only the location on the insulating member end surface side of the connection member on both sides in the circumferential direction, but also the location on the insulating member end surface side of the second member on both sides in the circumferential direction.
In this embodiment, the insulating member is easily placed on the stator core (stator core end surface) in a state where the slot insulating member is inserted into the slot of the stator core so as to protrude in the axial direction from the end surface of the stator core. can do. Conversely, the slot insulating member can be easily inserted into the slot of the stator core with the insulating member disposed on the stator core (end surface of the stator core).

Preferably, an insulating member integrally formed by filling a material for forming the insulating member into a molding space of the mold from a position corresponding to the convex portion of the insulating member is used . As a material for forming the insulating member, a resin is typically used. By filling a material such as a resin from a portion of the molding space corresponding to the convex portion of the insulating member, the fluidity of the material such as the resin is enhanced, and the quality of the insulating member is increased.

Another invention relates to a stator of a rotating machine.
The stator of the present invention includes a stator core, an insulating member, and a stator winding. The stator core has stator core end faces on both axial sides. The insulating members are disposed on both sides of the stator core in the axial direction, and have insulating member end faces at locations facing the stator core end faces.
The stator core has a yoke extending along the circumferential direction when viewed in a cross section perpendicular to the axial direction, and a plurality of teeth extending radially inward from the yoke. Each tooth includes a tooth base extending in the radial direction from the yoke, and a tooth base provided on the tip side of the tooth base, extending in the circumferential direction and having a tooth tip surface formed on the opposite side of the yoke. It has a tip. Two teeth adjacent to the yoke in the circumferential direction form a slot that is open between the tooth tips of the two adjacent teeth. A slot insulating member is inserted into the slot so as to protrude in the axial direction from the end face of the stator core.
The insulating member is arranged in a cross section perpendicular to the axial direction, the first member extending along the circumferential direction, and radially inward of the first member and spaced apart along the circumferential direction. And a plurality of second members extending in the circumferential direction, and a plurality of connecting members for connecting the first member and each second member. The insulating member is disposed on the stator core end surface so that the first member, the second member, and the connecting member are opposed to the yoke, the tooth tip portion, and the teeth base portion of the stator core, respectively. The insulating member is typically integrally formed of a resin having insulating properties. In addition, the description that “the first member, the second member, and the connecting member are disposed so as to face the yoke, the tooth tip portion, and the teeth base portion of the stator core” is “the first member, The two members and the connecting member are disposed so as to face at least a part of the yoke, the tooth tip portion, and the tooth base portion of the stator core, respectively.
The stator winding is wound around the stator core and the insulating member. As a winding method for the stator winding, a concentrated winding method is typically used in which the stator core is directly wound around the teeth base portion of the stator core and the connecting member of the insulating member.
And in this invention, it inclines in at least one of the location of the insulation member end surface side of the radial direction inner side (side facing a slot) of a 1st member, and the location of the insulation member end surface side of the circumferential direction both sides of a connection member. A surface is formed. The slot insulating member that protrudes in the axial direction from the stator core end surface when the radially inner inclined surface of the first member and the inclined surfaces on both sides in the circumferential direction of the connecting member are disposed on the stator core end surface. Is set so as to move in a direction (non-interference direction) that does not interfere with the operation of disposing the insulating member. That is, the radially inner inclined surface of the first member is formed such that the distance from the center line of the stator is larger on the insulating member end surface side than on the side opposite to the insulating member end surface. Of the end portion of the slot insulating member protruding in the axial direction from the end surface of the stator core by the radially inner inclined surface of the first member, the portion facing the yoke is radially inward (in the center direction of the slot). ) Further, the inclined surfaces on both sides in the circumferential direction of the connecting member are formed such that the distance between the both sides in the circumferential direction of the connecting member is smaller on the insulating member end surface side than on the opposite side to the insulating member end surface. Of the end portions of the slot insulating member projecting in the axial direction from the end surface of the stator core by the inclined surfaces on both sides in the circumferential direction of the connecting member, the portion facing the teeth base portion of the adjacent teeth is the circumference between the two portions. It moves in the direction in which the interval between directions widens (in the center direction of the slot). In addition, the structure of this invention can also be used when inserting a slot insulating member in a slot in the state which has arrange | positioned the insulating member in the stator core end surface.
In the present invention, the insulating member is easily placed on the stator core (stator core end surface) in a state where the slot insulating member is inserted into the slot of the stator core so as to protrude in the axial direction from the end surface of the stator core. can do. Conversely, the slot insulating member can be easily inserted into the slot of the stator core in a state where the insulating member is disposed on the end face of the stator core.

Another different invention relates to a rotating machine. The rotating machine of the present invention 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 teeth tip surface of the stator.
In the rotating machine of the present invention, the insulating member can be disposed in close contact with the stator core.

In the stator according to the present invention, the first recess is formed in the stator core end surface so as to be recessed from the stator core end surface, and the insulating member end surface is fitted in the first recess so that the tip portion protrudes from the insulating member end surface. The 1st convex part which can be combined is formed, and the 2nd recessed part is formed around the convex part. This prevents a gap from being generated between the insulating member end surface and the stator core end surface due to the boundary portion between the first recess and the stator core end surface coming into contact with the base of the convex portion. The insulating member can be disposed in close contact with the stator core.
The rotating machine of the present invention has the same effect as the stator of the present invention .

It is a perspective view of the stator of a 1st embodiment. It is the elements on larger scale of the insulating member which comprises the stator of 1st Embodiment. It is the III-III sectional view taken on the line of FIG. It is the figure seen from the arrow IV direction of FIG. It is the elements on larger scale of the insulating member which comprises the stator of 2nd Embodiment. FIG. 6 is a sectional view taken along line VI-VI in FIG. 5. It is the figure seen from the arrow VII direction of FIG. It is a figure (the VIII-VIII sectional view taken on the line of FIG. 5) explaining the effect | action of the insulating member in which the recessed part is formed in the location corresponding to a connection member of an insulating member end surface. It is a figure explaining the effect | action of the insulating member in which the recessed part is not formed in the location corresponding to a connection member of an insulating member end surface. It is the elements on larger scale of the insulating member which comprises the stator of 3rd Embodiment. It is the XI-XI sectional view taken on the line of FIG. It is the figure seen from the arrow XII direction of FIG. It is the elements on larger scale of the insulating member which comprises the stator of 4th Embodiment. It is the XIV-XIV sectional view taken on the line of FIG. It is the figure seen from the arrow XV direction of FIG. It is the elements on larger scale of the insulating member which comprises the stator of 5th Embodiment. It is the XVII-XVII sectional view taken on the line of FIG. It is the figure seen from the arrow XVIII direction of FIG. It is the elements on larger scale of the insulating member which comprises the stator of 6th Embodiment. It is the XX-XX sectional view taken on the line of FIG. It is the figure seen from the arrow XXI direction of FIG. It is the elements on larger scale of the insulating member which comprises the stator of 7th Embodiment. It is XXIII-XXIII sectional view taken on the line of FIG. It is the figure seen from the arrow XXIV direction of FIG. It is the elements on larger scale of the insulating member which comprises the stator of 8th Embodiment. It is the figure seen from the arrow XXVI direction of FIG. FIG. 26 is a sectional view taken along line XXVII-XXVII in FIG. 25. In the stator of 8th Embodiment, it is a figure explaining the operation | movement which arrange | positions an insulating member to a stator core. It is a figure explaining the outline | summary of one Embodiment of an insulating member manufacturing method. It is a figure explaining one embodiment of an insulating member manufacturing method.

Embodiments of the present invention will be described below with reference to the drawings.
In each of the embodiments described below, an adder-type rotating machine including a stator and a rotor that is rotatably supported with respect to the stator on the radially inner side of the stator will be described. As the stator, a three-phase six-pole stator having nine slots is formed. Further, as a winding method of the stator winding, a concentrated winding method in which the stator winding is directly wound around the teeth is used. Of course, each configuration described below can be used for various configurations of stators and rotating machines.
In the present specification, the “axial direction” refers to the rotation center line of the rotor (hereinafter referred to as “stator center line”) in a state where the rotor is rotatably supported with respect to the stator. Indicates direction. The “circumferential direction” indicates a circumferential direction centered on the center line of the stator as viewed in a cross section perpendicular to the axial direction. The “radial direction” indicates a direction perpendicular to the center line of the stator as viewed in a cross section perpendicular to the axial direction.

A stator 10 according to a first embodiment of the present invention is shown in FIGS. FIG. 1 is a perspective view of the stator 10. 2 is a partially enlarged view of the insulating member 120 of the stator 10, FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2, and FIG. 4 is a view seen from the direction of arrow IV in FIG. It is.
Although a rotor is not illustrated in FIG. 1, a known rotor is used as the rotor. For example, a rotor having a magnet housing hole and a permanent magnet housed in the magnet housing hole is used. The rotor is supported rotatably with respect to the stator 10. At this time, the rotor rotates around the center line P of the stator. The stator 10 and the rotor constitute a rotating machine.
The stator 10 includes a stator core 100, a slot insulating member 110, insulating members 120 and 130, a stator winding (not shown), and the like.

The stator core 100 is configured by laminating thin plate-shaped electromagnetic steel plates punched by a press or the like in the axial direction and integrating them with an auto clamp or the like.
The stator core 100 has a yoke 101 extending along the circumferential direction when viewed in a cross section perpendicular to the axial direction (a direction parallel to the center line P of the stator), and a plurality of stator cores 100 extending radially inward from the yoke 101. The teeth 102 are provided. The teeth 102 are provided at a tooth base portion 102a extending from the yoke 101 along the radial direction, and at a tip end side of the teeth base portion 102a. The teeth 102 extend along the circumferential direction and are opposite to the yoke 101 (inward in the radial direction). It has the teeth front-end | tip part 102b in which the teeth front-end | tip surface 102c is formed. The tooth tip surface 102c is formed in an arc shape centered on the center line P of the stator. Then, the rotor (not shown) is rotated so as to have a gap between the outer peripheral surface of the rotor and the tooth tip surface 102c in the rotor housing space 100a formed by the tooth tip surface 102c. Arranged (supported) as possible.
A slot 100 b is formed by the yoke 101 and two teeth 102 adjacent to each other in the circumferential direction among the plurality of teeth 102. The slot 100b has a slot opening between the teeth tip portions 102b of two adjacent teeth 102.
The stator core 100 has stator core end faces 104a and 104b on both axial sides. The stator core end faces 104a and 104b are formed with recesses 105 (details will be described later).
The slot insulating member 110 is inserted into the slot 100b. The slot insulating member 110 is formed into a sheet shape (film shape) using, for example, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or the like. The slot insulating member 110 is inserted into the slot 100b so as to protrude in the axial direction from the stator core end faces 104a and 104b. Thereby, it is possible to prevent the occurrence of insulation failure at the boundary between the stator core end face 104a (104b) and the insulating member 120 (130).

The insulating members 120 and 130 are made of, for example, polyethylene sulfide (PPS), polybutylene terephthalate (PBT), liquid crystal polymer (LCP), or the like. In the present embodiment, the insulating members 120 and 130 have the same configuration.
The insulating member 120 (130) has an outer wall member 121 (131) extending along the circumferential direction and a radially inner side of the outer wall member 121 (131) along the circumferential direction, as viewed in a cross section perpendicular to the axial direction. A plurality of inner wall members 122 (132) that are arranged at intervals and extend along the circumferential direction, and a plurality of connecting members 123 that connect the outer wall member 121 (131) and each inner wall member 122 (132). (133). The outer wall member 121 (131) and the inner wall member 122 (132) extend along the axial direction. The outer wall member 121, the inner wall member 122, and the connecting member 123 form a space for accommodating the end of the stator winding.
The insulating member 120 (130) has an insulating member end surface 124 (134) on one side (the other side) along the axial direction. The insulating member end surface 124 (134) is formed by the end surface on one side (the other side) along the axial direction of the outer wall member 121 (131), the inner wall member 122 (132), and the connecting member 123 (133).
A space 120 a (130 a) formed by the radially inner inner peripheral surface 122 c of the inner wall member 122 (132) is disposed at a position facing the rotor housing space 100 a of the stator core 100. The space 120b (130b) formed by the outer wall member 121 (131), the two inner wall members 122 (132) adjacent in the circumferential direction, and the connecting member 123 (133) is opposed to the slot 100b of the stator core 100. Placed in position.

The insulating members 120 (130) are disposed on both sides of the stator core 100 in the axial direction. Specifically, the outer wall member 121 (131), the inner wall member 122 (132), and the connecting member 123 (133) of the insulating member 120 (130) are respectively connected to the yoke 101 of the stator core 100 and the tooth tip 102b of the tooth 102. The insulating member end surface 124 (134) is disposed on the stator core end surface 104a (104b) so as to be disposed at a position facing the teeth base 102a. The outer wall member 121 (131), the inner wall member 122 (132), and the connecting member 123 (133) only need to face at least a part of the yoke 101, the tooth tip portion 102b, and the tooth base portion 102a, respectively.
In the state where the insulating member end surface 124 (134) is disposed on the stator core end surface 104a (104b), the inner peripheral surface 122c of the inner wall member 122 (132) is closer to the rotor side (diameter than the tooth tip surface 102c of the tooth 102). It is configured not to jump out (inward in the direction). Further, the outer peripheral surface 121c (131c) on the outer side in the radial direction of the outer wall member 121 (131) is configured not to protrude from the outer peripheral surface 101c of the yoke 101 to the side opposite to the rotor (outer in the radial direction) (see FIG. 27). .
The tooth tip surface 102 c of the tooth 102 corresponds to “the inner peripheral surface of the stator core 100”, and the outer peripheral surface 101 c of the yoke 101 corresponds to “the outer peripheral surface of the stator core 100”, and the inner peripheral surface of the inner wall member 122. The surface 122c corresponds to “the inner peripheral surface of the insulating member 120”, and the outer peripheral surface 121c (131c) of the outer wall member 121 (131) corresponds to “the outer peripheral surface of the insulating member 120 (130)”.
Then, in a state where the insulating members 120 (130) are arranged on both sides in the axial direction of the stator core 100, a stator winding (not shown) is wound. In the stator 10 of the present embodiment, the stator winding is directly wound around the teeth base portion 102a of the teeth 102 of the stator core 100 and the connecting member 123 (133) of the insulating member 120 (130) by a concentrated winding method. It has been.
In the present embodiment, the outer wall member 121 (131) of the insulating member 120 (130) corresponds to the “first member” of the present invention, and the inner wall member 122 (132) is the “second member of the present invention. The connecting member 123 (133) corresponds to the “connecting member” of the present invention.

Further, the insulating member 120 (130) is positioned on the stator core 100 (the outer wall member 121 (131), the inner wall member 122 (132), and the connecting member 123 (133) of the insulating member 120 (130) are connected to the stator core 100. Positioning means is provided to position the yoke 101, the tooth tip portion 102b, and the teeth base portion 102a so as to face each other. In the stator 10 of the present embodiment, positioning means are provided on the recess 105 formed in the stator core end surface 104a (104b) of the stator core 100 and the insulating member end surface 124 (134) of the insulating member 120 (130). The convex portion 125 (135) is formed and can be fitted into the concave portion 105. The shape of the concave portion 105 and the convex portion 125 (135) can be set to various shapes in which the convex portion 125 (135) can be fitted into the concave portion 105. In addition, the number and position of positioning means constituted by the concave portions 105 and the convex portions 125 (135) can be set as appropriate.
The positioning means (105 and 125) for positioning the insulating member 120 on the stator core 100 and the positioning means (105 and 135) for positioning the insulating member 130 on the stator core 100 have the same configuration. The positioning means for positioning the insulating member 120 on the stator core 100 will be described with reference to FIGS.

The recess 105 is preferably formed at a position where the flow of magnetic flux in the tooth base 102 a of the tooth 102 of the stator core 100 is not hindered by the recess 105.
For example, when the width of the teeth base portion 102a is close to the width necessary for obtaining a desired magnetic flux density (when there is no room), most of the concave portion 105 (including all of the concave portions 105) is placed on the stator core end surface 104a ( 104b) is preferably formed at a position corresponding to the yoke 101. “Locations of the stator core end surface 104a (104b) corresponding to the yoke 101” are “on the stator core end surface 104a (104b), the side surfaces on both sides in the radial direction of the yoke 101 (the inner peripheral surface and the diameter on the radially inner side). The outer peripheral surface on the outer side in the direction) represents a region surrounded by a line intersecting with the stator core end surface 104a (104b).
Further, when the width of the teeth base portion 102a is sufficiently larger than the width necessary for obtaining a desired magnetic flux density (when there is a margin), the recess 105 is formed on the yoke 101 of the stator core end surface 104a (104b). You may form over the location corresponding to the location corresponding to the teeth base 102a. Or you may form most (including all) the recessed part 105 in the location corresponding to the teeth base 102a of the stator core end surface 104a (104b). “Locations of the stator core end surface 104a (104b) corresponding to the teeth base portion 102a” are “on the stator core end surface 104a (104b), the side surfaces on both sides in the circumferential direction of the teeth base portion 102a (the left side surface on the left side in the circumferential direction) The right side surface on the right side in the circumferential direction), the inner peripheral surface on the radially inner side of the yoke 101, and the outer peripheral surface on the radially outer side of the tooth tip 102b are surrounded by a line intersecting the stator core end surface 104a (104b). .
In the case where a part or most (including all) of the recess 105 is formed in a portion of the stator core end face 104a (104b) corresponding to the tooth base 102a, the insulating member 120 (130 will be described in detail later). ) Of the recess 126 (136) or a large part (including all) of the recess 126 (136) can be formed on the insulating member end surface 124 (134) at a location corresponding to the connecting member 123 (133). In this case, since the size of the outer peripheral surface 121c (131c) of the outer wall member 121 (131) (the minimum diameter of the circle surrounding the outer peripheral surface 121c (131c)) can be reduced, the outer peripheral side of the outer wall member 121 (131) In addition, an external device can be arranged.

  In the stator 10 of the present embodiment, the convex portion 125 is formed so that the tip portion thereof protrudes from the insulating member end surface 124 in the axial direction. Further, most of the convex portion 125 is formed at a location corresponding to the outer wall member 121 of the insulating member end surface 124, and the remaining portion is formed at a location corresponding to the connecting member 123 of the insulating member end surface 124. Yes. “A portion of the insulating member end surface 124 corresponding to the outer wall member 121” is “on the insulating member end surface 124, the side surfaces on both sides in the radial direction of the outer wall member 121 (the inner peripheral surface on the radially inner side and the outer peripheral surface on the radially outer side). Represents a region surrounded by a line intersecting the insulating member end face 124. Further, “the portion of the insulating member end surface 124 corresponding to the connecting member 123” means “on the insulating member end surface 124, the side surfaces on both sides in the circumferential direction of the connecting member 123 (the left side surface on the left side in the circumferential direction and the right side surface on the right side in the circumferential direction). ), A region in which the radially inner peripheral surface of the outer wall member 121 and the radially outer peripheral surface of the inner wall member 122 are surrounded by a line intersecting the insulating member end surface 124.

Here, when the insulating member 120 is integrally formed of resin using a mold, the root portion 125a of the convex portion 125 formed on the insulating member end surface 124 becomes a curved surface (R surface). On the other hand, when the stator core 100 is constituted by a plurality of laminated magnetic steel sheets, the boundary between the recess 105 formed on the stator core end surface 104a and the stator core end surface 104a has a sharp angular shape (edge). Become.
When the convex portion projects directly from the end surface of the insulating member as in the conventional stator, the edge of the concave portion 105 (the boundary portion between the concave portion 105 and the stator core end surface 104a) is formed on the insulating member end surface 124. Abutting against the root (curved surface) of the convex portion 125, a gap (backlash) is generated between the insulating member end surface 124 and the stator core end surface 104a. That is, a gap is generated between the insulating member end surface 124 and the stator core end surface 104a due to the contact between the edge of the concave portion 105 and the root portion of the convex portion 105. If a gap is generated between the insulating member end surface 124 and the stator core end surface 104a, the insulating member 120 may fall off the stator core 100. Further, the insulating member 120 may be damaged by the winding force of the stator winding wound around the teeth base 102a of the stator core 100 and the connecting member 123 of the insulating member 120. Further, when the convex portion 125 is inserted into the concave portion 105, the convex portion 125 is scraped by the edge of the concave portion 105, and resin waste is generated. If the resin waste flows out of the electric motor, the external device is clogged, causing a failure. For example, when a rotating machine including the stator according to the present embodiment is used in a compressor such as an air conditioner or a refrigerator, the circulation device may be clogged and may break down.
In the stator 10 of the present embodiment, a concave portion 126 is formed around the convex portion 125 so as to be recessed from the insulating member end surface 124. That is, the insulating member end surface 124 is formed with a concave portion 126 so that most of the insulating member end surface 124 is disposed at a location corresponding to the outer wall member 121, and the concave portion 126 has a portion corresponding to the outer wall member 121. The convex part 125 is formed so that it may be arrange | positioned. The shape of the concave portion 126 can prevent the generation of a gap between the insulating member end surface 124 and the stator core end surface 104a due to the contact between the edge of the concave portion 105 and the root portion 125a of the convex portion 125. Further, the shape is set to an appropriate shape capable of accommodating resin waste generated by the contact between the edge of the concave portion 105 and the convex portion 125.

The concave portion 123a formed on the side opposite to the insulating member end surface 124 of the connecting member 123 improves the quality of the insulating member 120 by increasing the fluidity of the resin when the insulating member 120 is integrally formed of resin. Moreover, it is for reducing the usage-amount of resin. The recess 123a can be omitted.
In the present embodiment, the concave portion 105 formed in the stator core end surface 104a (104b) corresponds to the “first concave portion” of the present invention, and the convex portion 125 (formed in the insulating member end surface 124 (134). 135) corresponds to the “convex portion” of the present invention, and the concave portion 126 (136) corresponds to the “second concave portion” of the present invention.

In the stator according to the first embodiment, since the convex portion constituting the positioning means is formed on the end face of the insulating member and the second concave portion is formed around the convex portion, the positioning means is configured. Generation of a gap between the end face of the insulating member and the end face of the stator core due to the contact between the edge of the first concave portion and the root portion of the convex portion can be prevented. That is, the insulating member end face can be brought into close contact with the stator core end face. Thereby, it can prevent that an insulating member falls off from a stator core (stator core end surface). Further, it is possible to prevent the insulating member from being damaged by the winding force of the stator winding. Furthermore, since resin waste generated by cutting the convex portion by the edge of the first concave portion can be accommodated in the second concave portion 126, the resin waste is prevented from flowing out of the stator. It is possible to prevent damage to external equipment due to resin waste that has flowed to the outside.
Moreover, in the stator of 1st Embodiment, since most convex parts are formed in the location corresponding to the 1st member of an insulating member end surface, the 1st recessed part which a convex part can fit in Can be formed at a location corresponding to the yoke on the end face of the stator core. Thereby, it can prevent that the flow of the magnetic flux in the teeth base part of a stator core is prevented by the 1st recessed part, and can improve the efficiency of a rotary machine provided with the stator of 1st Embodiment.
The configuration of the present embodiment can be suitably used when the width of the tooth base portion of the teeth of the stator core is close to the width necessary to obtain a desired magnetic flux density (when there is no margin).

  Next, a stator according to another embodiment will be described. The stator according to another embodiment described below is formed on the insulating member because only the positions and shapes of the convex portions and the concave portions formed on the end surface of the insulating member are different from those of the stator according to the first embodiment. Only the convex part and concave part which are made are demonstrated. In the stator according to another embodiment described below, a recess corresponding to the recess 123a shown in FIG. 2 is not formed. In addition, among the constituent members of the other embodiments, the constituent members to which the reference numerals different from the reference numerals used in the first embodiment only in the numbers in the hundreds are attached to the first embodiment. It is equivalent to the constituent member.

An insulating member 220 used in the stator of the second embodiment is shown in FIGS. 5 is a partially enlarged view of the insulating member 220, FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 5, and FIG. 7 is a view seen from the direction of arrow VII in FIG.
In the stator of the second embodiment, most of the convex portions 225 are arranged at locations corresponding to the outer wall member 221 of the insulating member end surface 224, and the remaining portions are the same as in the first embodiment. The insulating member end surface 224 is formed at a position corresponding to the connecting member 223. In addition, the concave portion 226 around the convex portion 225 is formed across the portion corresponding to the outer wall member 221 and the portion corresponding to the connecting member 223 on the insulating member end surface 224. In other words, the insulating member end surface 224 is formed with a recess 226 so as to be disposed across a location corresponding to the outer wall member 221 and a location corresponding to the connecting member 223, and most of the recess 226 has a large portion. A convex portion 225 is formed so as to be disposed at a location corresponding to the outer wall member 221. The recess 226 only needs to be formed across at least a portion of the insulating member end surface 224 corresponding to the outer wall member 221 and at least a portion of the portion corresponding to the connecting member 223.

Here, when the stator core is configured by laminating electromagnetic steel plates punched by a press or the like, the end portions on both sides in the circumferential direction of the teeth base of the stator core (left side on the left side in the circumferential direction) There is a risk that the adhesion between the end and the right end on the right side in the circumferential direction will be impaired. In this case, if the concave portion 226 is formed at a position corresponding to the connecting member 223 of the insulating member end surface 224 as in the stator of the second embodiment, the teeth of the stator core caused by burrs and sags, etc. It is possible to prevent a decrease in adhesion at the ends on both sides in the circumferential direction of the base.
This will be described with reference to FIGS. 8 (a) and 8 (b) and FIGS. 9 (a) and 9 (b). FIG. 8A is a cross-sectional view along the circumferential direction of the teeth base 102a when the insulating member 220 of the second embodiment is used, and FIG. 8B is a cross-sectional view of FIG. FIG. FIG. 9A is a cross-sectional view along the circumferential direction of the teeth base 102a in the case where an insulating member having no recess is formed at a position corresponding to the connecting member on the end surface of the insulating member. (B) is the elements on larger scale of the B section of Fig.9 (a).
As shown in FIG. 9 (b), the teeth base portion 102a of the stator core 100 formed by laminating electromagnetic steel plates punched by a press or the like has ends on both sides in the circumferential direction (left side on the left side in the circumferential direction). Burr, sagging, etc. occur at the end portion and the right end portion H on the right side in the circumferential direction. At this time, when the concave portion is not formed in the portion corresponding to the connecting member 1023 on the insulating member end face, the portion corresponding to the connecting member 1023 on the insulating member end face is as shown in FIG. , Abuts on the teeth base 102a at the center along the circumferential direction. For this reason, due to burrs or sags formed at the ends H on both sides in the circumferential direction of the teeth base 102a, the adhesion at the ends H on both sides in the circumferential direction of the teeth base 102a is impaired, and the rigidity of the stator core 100 is increased. There is a risk of noise and vibration.
On the other hand, when the insulating member 220 according to the second embodiment in which the concave portion 226 is formed at a position corresponding to the connecting member 223 of the insulating member end surface 224 is shown in FIG. As shown, the portions corresponding to the connecting member 223 of the insulating member end surface 224 are the portions of the side walls 223a and 223b on both sides in the circumferential direction forming the recess 226, that is, the portions of the end portions H on both sides in the circumferential direction of the teeth base 102a. It abuts on the tooth end 102a. Thereby, the pressing force along the axial direction is applied to the locations of the end portions H on both sides in the circumferential direction of the teeth base portion 102a, and the electrical steel plates at the end portions H on both sides in the circumferential direction of the teeth base portion 102a due to punching of the electrical steel sheet. Generation | occurrence | production of the clearance gap between them can be prevented, the rigidity of the stator core 100 can be improved, and generation | occurrence | production of a sound and a vibration can be suppressed.

In the stator of the second embodiment, the convex portion is formed on the end surface of the insulating member, and the second concave portion is formed around the convex portion. Therefore, the stator of the first embodiment Has the same effect.
And since the 2nd recessed part is formed over the location corresponding to a 1st member and the location corresponding to a connection member of an insulating member end surface, when integrally molding an insulating member with materials, such as resin, , Can increase the fluidity of the material.
Moreover, the fall of the adhesiveness in the edge part of the circumferential direction both sides of the teeth base part of a stator core can be suppressed, the rigidity of a stator core can be improved, and generation | occurrence | production of a sound and a vibration can be suppressed. Moreover, the thickness of the insulating member (the thickness in the radial direction of the outer wall member and the inner wall member, the thickness in the axial direction of the connecting member) can be made substantially uniform, and the insulating member when integrally molded with a material such as resin Sled and distortion can be prevented. In addition, the amount of material used to form the insulating member can be reduced.

An insulating member 320 used in the stator of the third embodiment is shown in FIGS. 10 is a partially enlarged view of the insulating member 320, FIG. 11 is a cross-sectional view taken along the line XI-XI in FIG. 10, and FIG. 12 is a view seen from the direction of the arrow XII in FIG.
In the stator according to the third embodiment, the outer wall member 321 of the insulating member 320 includes a first portion 321a and a second portion that is disposed radially outward on the insulating member end surface 324 side from the first portion 321a. A portion 321b is used. Also in the present embodiment, the outer wall member 321 is disposed at a location facing the yoke 101 of the stator core 100.
In the present embodiment, the convex portion 325 is formed across the portion of the insulating member end surface 324 corresponding to the first portion 321a of the outer wall member 321 and the portion corresponding to the second portion 321b. That is, most of the convex portion 325 is formed at a location corresponding to the outer wall member 321 of the insulating member end surface 324. The concave portion 326 around the convex portion 325 extends over a portion of the insulating member end surface 324 corresponding to the first portion 321a of the outer wall member 321 and a portion corresponding to the connecting member 323, and the second portion of the outer wall member 321. The first portion 321a is formed so as to extend radially outward (the portion corresponding to the second portion 321b and the portion corresponding to the connecting member 323 are formed). That is, the insulating member end surface 324 spans a portion corresponding to the radially outer side of the first portion 321a of the outer wall member 321 and a portion corresponding to the connecting member 323 (a portion corresponding to the second portion 321b and the connecting member). The concave portion 326 is formed so as to be disposed across the portion corresponding to the H.323, and most of the concave portion 326 includes a portion corresponding to the first portion 321a of the outer wall member 321 and the second portion. Protrusions 325 are formed so as to be disposed across the portions corresponding to the portions 321b. “A portion of the insulating member end surface 324 corresponding to the first portion 321a” means “on the insulating member end surface 324, the side surfaces on both sides in the radial direction of the first portion 321a (the inner peripheral surface on the radially inner side and the radially outer side). Represents the area surrounded by a line intersecting the insulating member end surface 324. The “location of the insulating member end surface 324 corresponding to the second portion 321b” represents “the location of the insulating member end surface 324 excluding the location corresponding to the first portion from the location corresponding to the outer wall member”.
Since the first portion 321a of the outer wall member 321 is disposed radially inward from the second portion 321b, the outer peripheral side of the first portion 321a (the outer peripheral surface of the first portion 321a and the outer peripheral surface of the stator core 100) An external device can be arranged in a space between the surface 101c extending in the axial direction. For example, a cooling passage can be secured on the outer peripheral side of the first portion 321a. Alternatively, interference between the outer peripheral surface of the first portion 321a and an external device can be prevented.

In the stator of the third embodiment, the convex portion is formed on the end surface of the insulating member, and the second concave portion is formed around the convex portion. Therefore, the stator of the first embodiment Has the same effect.
And since the 2nd recessed part is formed over the location corresponding to a 1st member and the location corresponding to a connection member of an insulating member end surface, it has an effect similar to 2nd Embodiment.
Moreover, since the 1st part of the 1st member is arrange | positioned radially inside rather than the 2nd part, an external apparatus can be arrange | positioned on the outer peripheral side of a 1st part, or a 1st part It is possible to prevent interference between the outer peripheral surface of the device and an external device.

An insulating member 420 used in the stator according to the fourth embodiment is shown in FIGS. 13 is a partially enlarged view of the insulating member 420, FIG. 14 is a cross-sectional view taken along the line XIV-XIV in FIG. 13, and FIG. 15 is a view seen from the direction of the arrow XV in FIG.
The stator according to the fourth embodiment has the same configuration as that of the stator according to the third embodiment except that a communication hole 428 is formed in the recess (second recess) 426 of the insulating member 420. is there. The communication hole 428 is formed at a position corresponding to the connection member 423 in the recess 426 so as to communicate the connection member 423 in the axial direction. The communication hole 428 only needs to communicate at least a part of the connecting member 423. That is, the insulating member end surface 424 spans a portion corresponding to the radially outer side of the first portion 421a of the outer wall member 421 and a portion corresponding to the connecting member 423 (a portion corresponding to the second portion 421b and the connecting member). The concave portion 426 is formed so as to be disposed over the portion corresponding to the second portion 423, and most of the concave portion 426 is formed in the portion corresponding to the first portion 421 a of the outer wall member 421 and the second portion 421 b. Convex portions 425 are formed so as to be disposed over corresponding locations, and communication holes 428 are formed at locations corresponding to the connecting members 423.
When the rotating machine including the stator according to the present embodiment is used as an electric motor for driving a compressor, a medium such as a refrigerant or refrigeration oil passes through a communication hole 428 formed in the second recess 426. Flow in the axial direction. Thereby, a stator winding, a stator core 100, etc. can be cooled effectively.

In the stator of the fourth embodiment, the convex portion is formed on the end surface of the insulating member, and the second concave portion is formed around the convex portion. Therefore, the stator of the first embodiment Has the same effect.
In addition, the second recess extends across the part corresponding to the second part of the first member and the part corresponding to the connecting member on the end surface of the insulating member (corresponding to the part corresponding to the first member and the connecting member) Therefore, it has the same effect as the stator of the third embodiment.
Moreover, since the 1st part of the 1st member is arrange | positioned radially inside rather than the 2nd part, it has an effect similar to the stator of 3rd Embodiment.
Moreover, since the communication hole which connects a connection member to an axial direction is formed in the 2nd recessed part, media, such as a refrigerant | coolant and refrigerating machine oil, can be flowed axially through a communication hole, and a stator winding | coil And the stator core and the like can be effectively cooled.

An insulating member 520 used in the stator of the fifth embodiment is shown in FIGS. 16 is a partially enlarged view of the insulating member 520, FIG. 17 is a cross-sectional view taken along line XVII-XVII in FIG. 16, and FIG. 18 is a view seen from the direction of arrow XVIII in FIG.
In the stator of the fifth embodiment, similarly to the insulating member 320 of the third embodiment, the outer wall member 521 has a first portion 521a and an insulating member end surface 524 side from the first portion 521a. It is comprised by the 2nd part 521b arrange | positioned at radial direction outer side.
The convex portion 525 is formed across the portion of the insulating member end surface 524 corresponding to the first portion 521a of the outer wall member 521 and the portion corresponding to the second portion 521b. That is, most of the convex portion 525 is formed at a location corresponding to the outer wall member 521 of the insulating member end surface 524. In addition, most of the concave portion 526 around the convex portion 525 is formed across a portion corresponding to the first portion 521a and a portion corresponding to the second portion 521b of the outer wall member 521. Further, a recess 527 is formed at a location corresponding to the connecting member 523 so as to be recessed from the insulating member end surface 524. That is, the insulating member end surface 524 is formed with a recess 526 so that most of the insulating member end surface 524 is disposed across the portion corresponding to the first portion 521a and the portion corresponding to the second portion 521b of the outer wall member 521. In addition, a concave portion 527 is formed at a location corresponding to the connecting member 523, and a portion corresponding to the first portion 521a of the outer wall member 521 and a second portion 521b are mostly included in the concave portion 526. Convex part 525 is formed so that it may be arranged over the part corresponding to.
In the present embodiment, the convex portion 525 formed on the end surface 524 of the insulating member corresponds to the “convex portion” of the present invention, the concave portion 526 corresponds to the “second concave portion” of the present invention, and the concave portion 527 This corresponds to the “third recess” of the present invention.

In the stator of the fifth embodiment, the convex portion is formed on the end surface of the insulating member, and the second concave portion is formed around the convex portion. Therefore, the stator of the first embodiment Has the same effect.
Moreover, since the 3rd recessed part is formed in the location corresponding to a connection member of an insulating member end surface, 2nd Embodiment by which the recessed part is formed in the location corresponding to a connection member of an insulating member end surface Has the same effect.
Moreover, since the 1st part of the 1st member is arrange | positioned radially inside rather than the 2nd part, it has an effect similar to the stator of 3rd Embodiment.
Further, since the space between the second recess and the third recess is thick, the second recess is formed across the portion corresponding to the first member and the portion corresponding to the connecting member on the end face of the insulating member. Compared to the case, the strength of the connecting member can be increased, and the generation of sound and vibration can be suppressed.

An insulating member 620 used in the stator of the sixth embodiment is shown in FIGS. 19 is a partially enlarged view of the insulating member 620, FIG. 20 is a cross-sectional view taken along the line XX-XX in FIG. 19, and FIG. 21 is a view as seen from the direction of the arrow XXI in FIG.
Most of the convex portion 625 and the concave portion 626 are formed so as to be disposed at a position corresponding to the outer wall member 621 of the insulating member end surface 624. In addition, a recess 627 is formed in the insulating member end surface 624 at a location corresponding to the connection member 623, and a communication hole 628 that connects the connection member 623 in the axial direction is formed in the recess 627. That is, the insulating member end surface 624 is formed with a recess 626 so that most of the insulating member end surface 624 is disposed at a location corresponding to the outer wall member 621, and most of the inside of the recess 626 corresponds to the outer wall member 621. The convex part 625 is formed so that it may be arrange | positioned in the location to do. Further, a recess 627 is formed at a location corresponding to the connecting member 623, and a communication hole 628 that connects the connecting member 623 in the axial direction is formed in the recess 627.
In the present embodiment, the convex portion 625 formed on the insulating member end surface 624 corresponds to the “convex portion” of the present invention, the concave portion 626 corresponds to the “second concave portion” of the present invention, and the concave portion 627 The communication hole 628 corresponds to the “third recess” of the present invention, and the communication hole 628 corresponds to the “communication hole” of the present invention.

In the stator of the sixth embodiment, the convex portion is formed on the end surface of the insulating member, and the second concave portion is formed around the convex portion. Therefore, the stator of the first embodiment Has the same effect.
In addition, since the third concave portion is formed at the location corresponding to the connecting member on the end surface of the insulating member, the same effect as in the second embodiment in which the concave portion is formed at the location corresponding to the connecting member is obtained. .
Moreover, since the communication hole is formed in the 3rd recessed part currently formed in the location corresponding to a connection member, it has an effect similar to 4th Embodiment.
Moreover, since the space between the second recess and the third recess is thick, the same effect as that of the fifth embodiment is obtained.

An insulating member 720 used in the stator of the seventh embodiment is shown in FIGS. 22 is a partially enlarged view of the insulating member 720, FIG. 23 is a cross-sectional view taken along line XXIII-XXIII in FIG. 22, and FIG. 24 is a view seen from the direction of arrow XXIV in FIG.
In the stator of the seventh embodiment, the convex portion 725 is formed at a location corresponding to the connecting member 723 on the insulating member end surface 724. In addition, the concave portion 726 around the convex portion 725 is formed at a location corresponding to the connecting member 723 on the insulating member end surface 724. That is, the insulating member end surface 724 is formed with a recess 726 so that most (including all) of the insulating member end surface 724 is disposed at a location corresponding to the connecting member 723, and most (all) all within the recess 726. Is formed at a location corresponding to the connecting member 723.
In the stator of the present embodiment, most (including all) of the recesses (first recesses) 105 into which the protrusions 725 can be fitted are connected to the connecting member 723 of the insulating member 720 on the stator core end surface 104a. It forms in the location which respond | corresponds, ie, the location corresponding to the teeth base 102a of the teeth 102.

Since the stator of the seventh embodiment has a convex portion formed on the end surface of the insulating member and the second concave portion is formed around the convex portion, the stator of the first embodiment Has the same effect.
Moreover, since the 2nd recessed part is formed in the location corresponding to a connection member, it has an effect similar to 2nd implementation in which the recessed part is formed in the location corresponding to a connection member. Furthermore, since it is not necessary to provide the 2nd recessed part in the location corresponding to a 1st member, the magnitude | size of the outer peripheral surface of a 1st member (minimum diameter of the circle surrounding the outer peripheral surface of a 1st member) is made small. be able to. Thereby, an external apparatus can be arrange | positioned on the outer peripheral side of a 1st member, or interference with the outer peripheral surface of a 1st member and an external apparatus can be prevented. Furthermore, since the convex part which comprises a positioning means is formed in the connection part by which a stator coil | winding is wound, the shift | offset | difference with an insulating member and a stator core can be prevented more reliably.
The stator according to the seventh embodiment is preferably used when the width of the teeth base portion of the teeth of the stator core is sufficiently larger (when there is a margin) than the width necessary to obtain a desired magnetic flux density. it can.

Incidentally, the stator described in Patent Document 1 has the above-described stator core (yoke, teeth), insulating member (outer wall member, inner wall member, a plurality of connecting members), and a stator winding. A slot insulating member is inserted into a slot formed by two teeth adjacent to the yoke in the circumferential direction so as to protrude in the axial direction from the end face of the stator core.
In the conventional stator, since the slot insulating member is inserted into the slot so as to protrude from the end surface of the stator core, the slot insulation protruding from the end surface of the stator core when the insulating member is disposed on the end surface of the stator core. The end of the member becomes an obstacle, and the insulating member cannot be easily disposed on the end surface of the stator core.
In view of such a point, the eighth embodiment provides a technique capable of easily arranging an insulating member on a stator core (stator core end face).

  Insulating members 820 used on the stator of the eighth embodiment and disposed on both axial sides of the stator core 100 are shown in FIGS. 25 is a partially enlarged view of the insulating member 820, FIG. 26 is a view seen from the direction of arrow XXVI in FIG. 25, and FIG. 27 is a cross-sectional view taken along the line XXVII-XXVII in FIG. FIG. 28 is a cross-sectional view taken along line XXVIII-XXVIII in FIG. 25 for explaining the operation when the insulating member 820 is disposed on the stator core 100 (stator core end face 104a).

The stator according to the present embodiment includes a stator core 100, an insulating member 820, a stator winding, and slot insulation.
As shown in FIG. 1, the stator core 100 includes a yoke 101 and a plurality of teeth 102 (tooth base portion 102 a and tooth tip portion 102 b) extending radially inward from the yoke 101. The insulating member 820 is formed of the same resin as the insulating members of the first to seventh embodiments, and is disposed at positions facing the yoke 101, the tooth tip portion 102b, and the tooth base portion 102a of the stator core 100, respectively. It has an outer wall member 821, an inner wall member 822, and a tooth base 823.
The stator core 100 has stator core end faces 104a (104b) on both axial sides. The stator core end face 104 a (104 b) is formed with a recess 105 so that most (including all) of the stator core end face 104 a is disposed at a location corresponding to the yoke 101.
As shown in FIG. 1, the slot insulation 110 is pivoted from the stator core end faces 104a and 104b into a slot 100b formed by two teeth 102 circumferentially adjacent to the yoke 101 of the stator core 100. Inserted so as to pop out in the direction.
The insulating member 820 has an insulating member end surface 824 at a location facing the stator core end surface 104a (104b) of the stator core 100. A convex portion 825 is formed on the insulating member end surface 824 so that most (including all) of the insulating member end surface 824 is disposed at a location corresponding to the outer wall member 821. A concave portion 826 is formed around the convex portion 825 so that most (including all) of the convex portion 825 is disposed at a location corresponding to the outer wall member 821. Further, a recess 827 is formed at a location corresponding to the connecting member 823. The convex portion 825 is formed in a shape that can be fitted into the concave portion 105.
The insulating member 820 (insulating member end surface 824) is positioned on the stator core 100 (stator core end surface 104a) by the convex portion 825 formed on the insulating member end surface 824 and the concave portion 105 formed on the stator core end surface 104a. Positioning means is configured. In other words, the outer wall member 821, the inner wall member 822, and the connecting member 823 of the insulating member 820 are respectively positioned by the positioning means constituted by the convex portion 825 and the concave portion 105, so that the yoke 101, the tooth tip portion 102b, and the tooth base portion 102a of the stator core 100 are respectively. It arrange | positions in the position facing.
The stator winding (not shown) is a connecting member 823 of the teeth base 102a of the stator core 100 and the insulating member 820 by a concentrated winding method in a state where the insulating members 820 are arranged on both axial sides of the stator core 100. Wrapped directly on.

Furthermore, in the present embodiment, the outer wall member 821 is formed with an inclined surface 821A at a position on the insulating member end surface 824 (stator core 100) side on the radially inner side (center side of the slot). In addition, the connecting member 823 is formed with inclined surfaces 823A on both sides along the circumferential direction at locations on the insulating member end surface 824 side. The inclined surface 821A and the inclined surface 823A are formed so that the end portion of the slot insulating member 110 protruding in the axial direction from the stator core end surface 104a when the insulating member 820 is disposed on the stator core 100 (stator core end surface 104a). In addition, it is set so as to move in a direction (non-interference direction) that does not interfere with the work of disposing the insulating member 820. That is, the inclined surface 821A is formed such that the distance from the center line P of the stator is larger on the insulating member end surface 824 side than on the side opposite to the insulating member end surface 824. Of the end portion of the slot insulating member 110 that protrudes in the axial direction from the stator core end surface 104a by the radially inner inclined surface 821A of the outer wall member 821, a portion facing the yoke 101 is indicated by an arrow in FIG. As shown in FIG. In addition, the inclined surface 823A is formed such that the distance between both sides in the circumferential direction of the connecting member 823 is smaller on the insulating member end surface 824 side than on the opposite side to the insulating member end surface 824. Of the end portions of the slot insulating member 110 protruding in the axial direction from the stator core end surface 104a by the inclined surfaces 823A on both sides in the circumferential direction of the connecting member 823, the portion facing the tooth base portion 102a of the adjacent tooth 102 is shown in FIG. 28 (a) and 28 (b), it moves in a direction (center direction of the slot) in which the interval in the circumferential direction between both portions is increased.
An inclined surface 821C on the inner side in the radial direction of the outer wall member 821, opposite to the insulating member end surface 824, makes it easy to remove the insulating member 820 from the mold when the insulating member 820 is integrally formed of a material such as resin. Is. The inclined surface 821C is formed such that the distance from the center line P of the stator is smaller on the insulating member end surface 824 side than on the side opposite to the insulating member end surface 824. Further, the surface 821B between the inclined surfaces 821A and 821C of the outer wall member 821 and the surface 823B of the connecting member 823 opposite to the insulating member end surface 824 are orthogonal to (including substantially orthogonal to) the insulating member end surface 824. It extends.
The inclined surface 823A can be formed not only on the insulating member end surface 824 side on both sides in the circumferential direction of the connecting member 823 but also on the insulating member end surface 824 side on both sides in the circumferential direction of the inner wall member 822.
Moreover, the length along the axial direction of inclined surface 821A, 823A can be set suitably.

  In the present embodiment, the outer wall member 821 of the insulating member 820 corresponds to the “first member” of the present invention, the inner wall member 822 corresponds to the “second member” of the present invention, and the connecting member 823 includes This corresponds to the “connecting member” of the present invention. Further, the concave portion 105 formed on the stator core end faces 104a and 104b corresponds to the “first concave portion” of the present invention, and the convex portion 825 formed on the insulating member end surface 824 is the “convex portion” of the present invention. The concave portions 826 and 827 correspond to the “second concave portion” and the “third concave portion” of the present invention. Further, the inclined surface 821A corresponds to the “inclined surface formed on the end surface of the insulating member on the radially inner side of the first member” of the present invention, and the inclined surface 823A corresponds to “both sides of the connecting member in the circumferential direction”. Corresponds to the “inclined surface formed on the end surface side of the insulating member”.

The stator of the eighth embodiment includes an insulating member end face side (stator core side) on the radially inner side of the first member of the insulating member, and insulating member end face sides (stator core side) on both sides in the circumferential direction of the connecting member. ), The insulating member is inserted into the slot of the stator core so that the slot insulating member protrudes in the axial direction from the end surface of the stator core. It can be easily arranged on the core end face.
Moreover, since the convex part is formed in the insulating member end surface, and the 2nd recessed part is formed around the convex part, it has an effect similar to the stator of 1st Embodiment.
Moreover, since the 3rd recessed part is formed in the location corresponding to an outer wall member of an insulating member end surface, it has an effect similar to 2nd Embodiment.
Moreover, since the space between the second recess and the third recess is thick, the same effect as that of the fifth embodiment is obtained.

The inclined surface 821A only needs to be formed at least on the insulating member end surface 824 side on the radially inner side (slot center side) of the outer wall member 821, and the inclined surfaces 823A are on both sides in the circumferential direction of the connecting member 823. It suffices if it is formed at least on the insulating member end face 824 side.
Further, the insulating member 820 having at least one of the inclined surface 821A on the insulating member end surface 824 side on the radially inner side of the outer wall member 821 and the inclined surface 823A on the insulating member end surface side on both sides in the circumferential direction of the connecting member 823 is used. be able to. Even in this case, the insulating member 820 can be easily disposed on the stator core end face 104a.
The stator core end face 104a (104b) and the insulating member end face 824 can also be formed with the recesses, protrusions, communication holes, and the like described in the first to seventh embodiments.
Further, at least one of the inclined surface 821A formed on the insulating member end surface 824 side on the radially inner side of the outer wall member 821 and the inclined surface 823A formed on the insulating member end surface 824 side on both sides in the circumferential direction of the connecting member 823 is provided. It can also comprise as a stator provided with the insulation member 820 which has. That is, the concave portion (first concave portion) 105 of the stator core 100, the convex portion 825 of the insulating member 820, the concave portion (second concave portion) 826, the concave portion (third concave portion) 827, and the like can be omitted.

Next, an embodiment of an insulating member manufacturing method for manufacturing an insulating member used in the stator of the first to eighth embodiments will be described with reference to FIGS. FIG. 29 is a diagram showing an outline of the method for manufacturing the insulating member of the present embodiment, taking as an example the case of manufacturing the insulating member 120 of the first embodiment, and FIG. 30 shows the embodiment. It is a figure which shows the shaping | molding die used by.
In the insulating member manufacturing method of the present embodiment, the outer wall member 121, the inner wall member 122, the connecting member 123, the convex portion 125, and the concave portion (second concave portion) 126 are formed by filling the resin 900 in the molding space. The insulating member 120 is integrally formed. At this time, as shown in FIG. 29, the molding space is filled with resin from a location corresponding to the tip of the convex portion 125 of the insulating member 120.
In the insulating member manufacturing method of the present embodiment, as shown in FIG. 30, the first mold 910 that is a fixed mold, the second mold 920 that is a movable mold, and the third mold are used. The mold 930 and the fourth mold 940 are used. The first mold 910 and the second mold 920 are provided with formation surfaces 911 and 921 that form the resin passage 901. The third mold 930 and the fourth mold 940 are provided with forming surfaces 931 and 941 that form a molding space 902.
When manufacturing the insulating member 120, first, the first mold 910 to the fourth mold 940 are stacked as shown in FIG. The first mold 910 to the fourth mold 940 are formed with the resin passage 901 formed by the formation surfaces 911 and 921 when the first mold 910 to the fourth mold 940 are stacked. A molding space 902 formed by the surfaces 931 and 941 is configured to communicate with a portion 903 corresponding to the tip of the convex portion 125 of the insulating member 120.
In this state, the resin 900 is filled into the molding space 902 through the resin passage 901.
Next, the second mold 920 to the fourth mold 940 are pulled away from the first mold 910.
Next, the third mold 930 and the fourth mold 940 are separated from the second mold 920.
Next, the fourth mold 940 is pulled away from the third mold 930. Then, the insulating member 120 is taken out.

In the insulating member manufacturing method of the present embodiment, the outer wall member, the inner wall member, the connecting member that connects the outer wall member and the inner wall member, and the insulating member having the convex portion and the concave portion formed on the end surface of the insulating member are opposed to the convex portion. Since the resin is integrally molded by filling the resin into the molding space from the place to be performed, the fluidity of the resin can be improved, and a high-quality insulating member can be manufactured.
In addition, as a material which forms an insulating member, it is not limited to resin, The various material which can integrally mold an insulating member using a shaping | molding die can be used.
Moreover, as a shaping | molding die, it is not limited to the shaping | molding die shown by FIG. 30, Various shapes according to the shape of an insulating member and various numbers of shaping | molding die can be used.
Moreover, as a molding method (procedure) of the insulating member, an appropriate molding method according to a mold or the like can be used.

The present invention is not limited to the embodiments, and various changes, additions, and deletions are possible.
The shape of the first recess formed on the end surface of the stator core and the projection formed on the end surface of the insulating member and fit into the first recess can be changed as appropriate. Further, the shape and position of the convex portion and the second concave portion or the second concave portion, the third concave portion and the communication hole formed on the end surface of the insulating member can be appropriately changed.
Inclined surface formed on the insulating member end surface side on the radially inner side of the first member (outer wall member) of the insulating member, and the shape and position of the inclined surface formed on the insulating member end surface side on both sides in the circumferential direction of the connecting member The formation region can be changed as appropriate.
The present invention can be configured as a stator, a rotating machine including the stator, or an insulating member manufacturing method for manufacturing an insulating member of the stator.
Each configuration described in the embodiment can be used alone, or a plurality selected as appropriate can be used in combination.

DESCRIPTION OF SYMBOLS 10 Stator 100 Stator core 100a Rotor insertion space 100b Slot 101 Yoke 101c The outer peripheral surface of a yoke (the outer peripheral surface of a stator core)
102 Teeth 102a Teeth base portion 102b Teeth tip portion 102c Teeth tip surfaces 104a and 104b Stator core end surface 105 Recess (first recess)
110 Slot insulating member 120, 130, 220, 320, 420, 520, 620, 720, 820 Insulating member 120a, 120b, 130a, 130b Space 121, 131, 221, 321, 421, 521, 621, 721, 821 Outer wall member (First member)
121c, 131c, 321c, 421c, 521c, 621c, 721c, 821c Outer surface of outer wall member (first member) (outer surface of insulating member)
122, 132, 222, 322, 422, 522, 622, 722, 822 Inner wall member (second member)
122c, 222c, 322c, 422c, 522c, 622c, 722c, 822c Inner peripheral surface of inner wall member (second member) (inner peripheral surface of insulating member)

123, 133, 223, 323, 423, 523, 623, 723, 823, 1023 Connecting member 123a Recessed part 124, 134, 224, 324, 424, 524, 624, 724, 824 Insulating member end face 125, 135, 225, 325 425, 525, 625, 725, 825 Convex part 125a, 225a, 325a, 425a, 525a, 625a, 725a Root part 126, 136, 226, 326, 426, 526, 626, 726, 826 Concave part (second concave part) )
223a. 223b Side wall 321a, 421a, 521a of connecting member First portion 321b, 421b, 521b Second portion 428, 628 Communication hole 527, 627, 827 Recessed portion (third recessed portion)
821A, 821C Inclined surface 823A Inclined surface 900 Resin 901 Resin passage 902 Molding space 910 First mold 920 Second mold 930 Third mold 940 Fourth mold 911, 921, 931, 941 Forming surface P Stator center line

Claims (8)

A stator core having stator core end faces on both sides in the axial direction; an insulating member disposed on both sides in the axial direction of the stator core; and having insulating member end faces at locations facing the stator core end faces; and the stator core And a stator winding wound around the insulating member,
Each of the insulating members has a first member extending along the circumferential direction when viewed in a cross section perpendicular to the axial direction, and is spaced radially inward from the first member along the circumferential direction. The stator includes a plurality of second members that are arranged and extend in the circumferential direction, and a plurality of connecting members that connect the first member and the second members. And
The stator core end surface is formed with a first recess so as to be recessed from the stator core end surface,
The insulating member end surface is formed with a convex portion that can be fitted into the first concave portion so that the tip portion protrudes from the insulating member end surface, and the insulating member end surface is disposed around the convex portion. A second recess is formed so as to be recessed from
At least a part of the convex portion and the second concave portion is formed at a portion of the end surface of the insulating member corresponding to the connecting member. The stator according to claim 1,
The stator, wherein the second recess is formed with a communication hole for communicating the connecting member in the axial direction. The stator according to claim 1,
A stator having a third recess formed on the end surface of the insulating member so as to be recessed from the end surface of the insulating member at a location corresponding to the connecting member. The stator according to claim 3,
The stator, wherein the third recess is formed with a communication hole that communicates the connecting member in the axial direction. The stator according to any one of claims 1 to 4,
The first member has a first portion and a second portion disposed radially outward on the insulating member end face side from the first portion,
The stator, wherein the second recess is formed to extend radially outward from the first portion of the first member. The stator according to any one of claims 1 to 5,
The stator core is seen in a cross section perpendicular to the axial direction,
A yoke extending along the circumferential direction;
A tooth base extending radially inward from the yoke, and a tooth tip provided on the tip side of the tooth base, extending along the circumferential direction and having a tooth tip surface on the opposite side of the yoke A plurality of teeth having,
It is formed by two teeth adjacent in the circumferential direction among the yoke and the plurality of teeth, and has a slot opened between the teeth tip portions of the two teeth.
The first member, the second member, and the connecting member of each of the insulating members are disposed at positions facing the yoke of the stator core, the tooth tip, and the teeth base, respectively.
In the slot, a slot insulating member is inserted so as to protrude from the end face of the stator core,
Each of the insulating members has an inclined surface at least one of a location on the insulating member end surface side on the radially inner side of the first member and a location on the insulating member end surface side on both sides in the circumferential direction of the connecting member. ,
The inclined surface of the first member is formed such that the distance from the center line of the stator is larger on the insulating member end surface side than on the side opposite to the insulating member end surface,
The stator is characterized in that the inclined surface of the connecting member is formed such that an interval between both sides in the circumferential direction of the connecting member is smaller on the insulating member end surface side than on the opposite side to the insulating member end surface side. A stator core having stator core end faces on both sides in the axial direction; an insulating member disposed on both sides in the axial direction of the stator core; and having insulating member end faces at locations facing the stator core end faces; and the stator core And a stator winding wound around the insulating member,
The stator core is seen in a cross section perpendicular to the axial direction,
A yoke extending along the circumferential direction;
A tooth base extending radially inward from the yoke, and a tooth tip provided on the tip side of the tooth base, extending along the circumferential direction and having a tooth tip surface on the opposite side of the yoke A plurality of teeth having,
It is formed by two teeth adjacent in the circumferential direction among the yoke and the plurality of teeth, and has a slot opened between the teeth tip portions of the two teeth.
Each of the insulating members is viewed in a cross section perpendicular to the axial direction,
A first member extending along the circumferential direction, disposed at a position facing the yoke;
A plurality of second members extending along the circumferential direction, disposed at positions facing the tooth tips of the teeth;
A stator having a plurality of connecting members that are arranged at positions facing the tooth base of the teeth and connect the first member and the second members,
In the slot, a slot insulating member is inserted so as to protrude from the end face of the stator core,
Each of the insulating members is formed on an inclined surface at least one of a location on the insulating member end surface side on the radially inner side of the first member and a location on the insulating member end surface side on both sides in the circumferential direction of the connecting member. And
The inclined surface of the first member is formed such that the distance from the center line of the stator is larger on the insulating member end surface side than on the side opposite to the insulating member end surface,
The stator is characterized in that the inclined surface of the connecting member is formed such that an interval between both sides in the circumferential direction of the connecting member is smaller on the insulating member end surface side than on the opposite side to the insulating member end surface. A stator according to any one of claims 1 to 7 and a rotor, wherein 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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