JP2009106113A - Rotating electric machine, insulating member, and method of manufacturing rotating electric machine - Google Patents

Abstract

Provided are a rotating electrical machine, an insulating member, and a manufacturing method of the rotating electrical machine in which a coil that has already been wound can be easily attached to an insulator and the manufacturing process is simplified.
A rotating electrical machine is provided between an inner peripheral surface of a coil 132 and an outer peripheral surface of a stator tooth 141, and a tooth insulating portion 161 that insulates the stator tooth 141 from the coil 132, and a tooth insulating portion 161. An insulator 160 having a yoke insulating portion 162 connected to and supporting the tooth insulating portion 161 is provided.
[Selection] Figure 4

Description

  The present invention relates to a rotating electrical machine, an insulating member, and a method for manufacturing the rotating electrical machine.

  2. Description of the Related Art Conventionally, with respect to a rotating electrical machine, an insulating member, and a manufacturing method of the rotating electrical machine, various types of insulators that are reduced in thickness, a rotating electrical machine that is improved in electrical insulation, and a manufacturing method of the rotating electrical machine have been proposed. For example, a stator structure of a rotating electrical machine described in Japanese Patent Application Laid-Open No. 2006-311706 includes an insulator around which a coil is wound. The insulator includes a shaft-shaped coil winding portion and a coil winding portion. Including flanges provided at both ends. This insulator is formed by a compression-molded film member. In this stator structure of a rotating electrical machine, the insulator is made thinner.

  In addition, the stator core insulation structure disclosed in Japanese Patent Application Laid-Open No. 2004-208475 covers the insulating paper covering substantially the entire surface of the stator teeth, and further covers the bottom of the slot and the portion not covered by the insulating paper. And an insulating member.

  According to this stator core insulation structure, even when the axial length of the stator core is long, the molding method can be applied to ensure electrical insulation.

  The rotating electrical machine described in Japanese Patent Application Laid-Open No. 2004-56915 includes an insulator with a flat coil mounted thereon, so that the space factor is improved.

A rotating electrical machine described in Japanese Patent Application Laid-Open No. 2004-297986 includes a winding tooth formed by stacking a plurality of stator blanks, a coil, and an insulator provided between the coil and the winding tooth. I have. The insulator includes a shaft portion and a flange portion provided at the end portion in the axial direction. The flange portion is divided into two end wall portions and an elastic portion that connects the end wall portions. It has. In this rotating electrical machine, the insulator is prevented from falling off at the beginning of winding of the coil.
JP 2006-311706 A JP 2004-208475 A Japanese Patent Laid-Open No. 2004-56915 JP 2004-297986 A

  However, in the rotating electrical machine described in Japanese Patent Application Laid-Open No. 2004-56915, etc., when the insulator is inserted into the already wound coil, the insulator comes into contact with the inner peripheral surface of the coil so that the insulator is satisfactorily coiled. It is difficult to insert inside.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide an insulating member that can be easily attached to an insulator on a coil that has already been wound, and to be easily attached to the coil. It is providing the rotary electric machine provided with the insulating member which can do, and the simplification of the manufacturing process, and the manufacturing method of a rotary electric machine.

  A rotating electrical machine according to the present invention includes a rotor provided rotatably and an annular stator disposed around the rotor, and the stator includes a yoke portion extending in a circumferential direction of the stator, and the rotor from the yoke portion. A stator core including a stator tooth projecting toward the stator, an insulating member attached to the stator tooth, and a coil that is insulated from the stator core by the insulating member and wound around the stator tooth. The insulating member is provided between the inner peripheral surface of the coil and the outer peripheral surface of the stator teeth, the tooth insulating portion capable of insulating the stator teeth and the coil, and the tooth insulating portion are connected, and the tooth insulating portion is Supporting connections. Further, the tooth insulating portion is provided with a first insulating piece having one side continuously connected to the connecting portion, and is spaced from the first insulating piece along the circumferential surface of the stator tooth. A second insulating piece provided so as to face the piece, and the first and second insulating pieces can be elastically deformed so that their distal end portions are close to or separated from each other. Preferably, the first insulating piece and the second insulating piece are arranged at intervals in the circumferential direction of the stator. The first insulating piece protrudes in the direction of the central axis from one end face located in the direction of the central axis of the stator of the first insulating piece, and the first protruding portion that supports the inner peripheral surface of the coil, And a second protrusion that protrudes from the end surface of the coil and supports the inner peripheral surface of the coil. Further, the second insulating piece protrudes from the one end face positioned in the direction of the central axis of the stator of the second insulating piece in the direction of the central axis, and a third protruding portion that supports the inner peripheral surface of the coil, 4th protrusion part which protrudes from the end surface of this.

  Preferably, of the surfaces of the first insulating piece, the inner surface facing the second insulating piece is a first support surface that supports the side surface of the starter teeth, and the direction of the center axis of the stator with respect to the first support surface And a first curved surface that is curved so as to be closer to the second insulating piece as it goes from the tip of the first insulating piece to the connecting portion. Further, of the surfaces of the second insulating piece, the inner surface facing the first insulating piece includes a second support surface that supports the side surface of the starter teeth, and a central axis direction of the stator with respect to the second support surface. And a second curved surface that is formed in an adjacent portion and curves so as to approach the first insulating piece as it goes from the tip of the second insulating piece toward the connecting portion. And the 1st curved surface and the 2nd curved surface are arranged in a row.

  Preferably, the connecting portion extends along the peripheral surface of the yoke portion, is disposed between the peripheral surface of the yoke portion and the coil, and is a yoke insulating portion capable of insulating the coil and the yoke portion.

  Preferably, the insulating member includes a yoke insulating portion that is provided separately from the tooth insulating portion and the connecting portion, is disposed between the peripheral surface of the yoke portion and the coil, and can insulate the coil from the yoke portion. . Preferably, the first insulating piece includes a first engaging portion that is provided at a tip portion of the first insulating piece, bends away from the second insulating piece, and can engage with an end surface of the coil. The second insulating piece includes a second engaging portion that is provided at the tip of the second insulating piece, bends away from the first insulating piece, and can engage with the end surface of the coil.

  An insulating member according to the present invention includes: a first insulating piece disposed on one first side surface arranged in a circumferential direction of a stator among stator teeth peripheral surfaces provided in an annularly formed stator; The second insulating piece disposed on the second side located on the opposite side to the one side is connected to one side of the first insulating piece to support the first insulating piece and to provide the second insulation. One side part of the piece is connected, and a connection part for supporting the second insulating piece is provided. And the other side part located on the opposite side to the one side part of the first insulating piece and the other side part located on the opposite side to the one side part of the second insulating side are mutually connected. It can be elastically deformed so as to approach or separate.

  Preferably, the first insulating piece protrudes from one end face of the first insulating piece positioned in the central axis direction of the stator in the central axis direction, and supports the first protruding portion that supports the inner peripheral surface of the coil, and the other And a second protrusion that protrudes from the end surface of the coil and supports the inner peripheral surface of the coil. The second insulating piece protrudes in the central axis direction from one end face positioned in the central axis direction of the stator of the second insulating piece, and supports a third protruding portion that supports the inner peripheral surface of the coil, 4th protrusion part which protrudes from the end surface of this. Preferably, of the surfaces of the first insulating piece, the inner surface facing the second insulating piece is a first support surface that supports the side surface of the starter teeth, and the direction of the center axis of the stator with respect to the first support surface And a first curved surface that is curved so as to be closer to the second insulating piece as it goes from the tip of the first insulating piece to the connecting portion. And among the surfaces of the second insulating piece, the inner surface facing the first insulating piece is a second support surface that supports the side surface of the starter teeth, and the center axis direction of the stator with respect to the second support surface And a second curved surface that is formed in an adjacent portion and curves so as to approach the first insulating piece as it goes from the tip of the second insulating piece toward the connecting portion. Then, the first curved surface and the second curved surface are connected to form an arcuate base.

  Preferably, the connecting portion is formed so as to project in a direction intersecting the first and second insulating pieces.

  Preferably, the first insulating piece is formed on the other side located on the opposite side to the one side of the first insulating piece, and bends away from the second insulating piece. Part. The second insulating portion is formed on the other side located on the opposite side to the one side of the second insulating piece, and the second bent portion is bent away from the first insulating side. Including.

  The method for manufacturing a rotating electrical machine according to the present invention includes a first insulating piece, a second insulating piece arranged to face the first insulating piece, and each side portion of the first and second insulating pieces. A step of preparing an insulating member including an annular connecting portion that is connected at an interval and supports the first and second insulating pieces; Further, in this method of manufacturing a rotating electrical machine, in a state where the tip of the first insulating piece and the tip of the second insulating piece are close to each other in the through hole defined by the coil wound in an annular shape, A step of inserting the first and second insulating pieces, and a step of inserting stator teeth between the first and second insulating pieces inserted into the coil.

  Preferably, the first insulating piece includes a first engaging portion that is formed at a distal end portion of the first insulating piece and bends away from the second insulating piece, and the second insulating piece includes the second insulating piece. A second engaging portion is formed at the tip of the piece and bends away from the first insulating piece. And while inserting the said 1st and 2nd insulating piece in a coil, a 1st and 2nd engaging part is engaged with the end surface of a coil, and an insulating member is fixed to the inner peripheral surface of a coil.

  Preferably, the first and second insulating pieces are formed in a flat plate shape and are formed so that the distance from each other decreases from the connecting portion side toward the tip portion side, and the stator teeth are connected to the first insulating piece. By inserting it between the second insulating pieces, the first and second insulating pieces are raised along the outer peripheral surface of the stator teeth and the inner peripheral surface of the coil.

  According to the rotating electrical machine, the insulating member, and the manufacturing method of the rotating electrical machine according to the present invention, the coil can be easily attached to the insulator, and the manufacturing process can be simplified.

  A method for manufacturing a rotating electrical machine, an insulating member, and a rotating electrical machine according to the present embodiment will be described with reference to FIGS.

  Note that in the embodiments described below, when referring to the number, amount, and the like, the scope of the present invention is not necessarily limited to the number, amount, and the like unless otherwise specified. In the following embodiments, each component is not necessarily essential for the present invention unless otherwise specified. In addition, when there are a plurality of embodiments below, it is planned from the beginning to appropriately combine the features of each embodiment unless otherwise specified.

(Embodiment 1)
FIG. 1 is a cross-sectional view of rotating electric machine 100 according to Embodiment 1 of the present invention. As shown in FIG. 1, the rotating electrical machine 100 includes a rotor 120 that is rotatable about a rotation center axis O (center axis), and a stator 130 that is provided around the rotor 120 and formed in an annular shape. And.

  The rotor 120 is fixed to a rotating shaft 110 provided to be rotatable about a rotation center axis O. The rotor 120 includes a rotor core 121 fixed to the rotating shaft 110 and a permanent magnet 122 formed in the rotor core 121 and inserted in a magnet insertion hole 126 extending in the direction of the rotation center axis O. The permanent magnet 122 is fixed in the magnet insertion hole 126 by the resin 124.

  2 is a cross-sectional view taken along line II-II in FIG. As shown in FIG. 2, the stator 130 includes a stator core 131 formed in an annular shape around the rotation center axis O, and a coil 132 wound around the 131.

  The stator core 131 includes a plurality of divided stator cores 142 that are annularly arranged around the rotation center axis O, and a cylindrical member 145 that is disposed on the outer periphery of the divided stator core 142 and is shrink-fitted to the outer peripheral side of the divided stator core 142. It has. The cylindrical member 145 is annularly fixed by pressing each divided stator core 142.

  The divided stator core 142 includes a yoke portion 140 that extends in the circumferential direction of the stator 130, and a stator tooth 141 that protrudes from the yoke portion 140 toward the rotor 120.

  The yoke portions 140 of the respective divided stator cores 142 are arranged in the circumferential direction, whereby an annular yoke portion main body 140A of the stator core 131 is defined, and each stator tooth 141 is connected to the stator from the inner peripheral surface of the annular yoke portion main body 140A. 130 protrudes inward in the radial direction. That is, each stator tooth 141 protrudes toward the rotor 120 at an interval in the circumferential direction from the inner peripheral surface of the yoke portion main body 140A.

  Note that the stator 130 of the rotating electrical machine 100 according to the present embodiment is configured by arranging a plurality of divided stator cores 142 in an annular shape, but may be an integral annular stator core 131.

  FIG. 3 is a perspective view showing the split stator core 142 and the insulator 160 and the coil 132 attached to the split stator core 142. As shown in FIG. 3, an insulator 160 is disposed between the coil 132 and the split stator core 142, and the coil 132 and the split stator core 142 are insulated by the insulator 160. The coil 132 is wound around the stator tooth 141 via the insulator 160.

  FIG. 4 is a perspective view of the insulator 160. As shown in FIG. 4, the insulator 160 is provided between the inner peripheral surface of the coil 132 and the outer peripheral surface of the stator tooth 141, and a tooth insulating portion 161 that insulates the stator tooth 141 from the coil 132. An insulating portion 161 is connected, and a yoke insulating portion 162 that supports the tooth insulating portion 161 is provided. The teeth insulating portion 161 includes an insulating piece 163 and an insulating piece 164.

  Each of the one side portions of the insulating piece 163 and the insulating piece 164 is connected to the yoke insulating portion 162, and is arranged with a space along the peripheral surface of the stator teeth 141. The insulating piece 163 and the insulating piece 164 are disposed so as to face each other, and are provided so as to be elastically deformable with respect to the yoke insulating portion 162.

  The insulating piece 163 can be elastically deformed so as to be bent so as to be close to the insulating piece 164 around the connecting portion with the yoke insulating portion 162. Furthermore, the insulating piece 164 is also provided with the yoke insulating portion 162. It can be elastically deformed so that it bends so that it may approach the insulating piece 163 centering on a part.

  A through-hole 173 into which the stator teeth 141 of the split stator core 142 shown in FIG. 3 is inserted is formed in the yoke insulating portion 162, and it follows the inner peripheral surface of the yoke portion 140 when it is mounted on the split stator core 142. Is overhanging.

The insulating piece 163 is connected to a portion of the yoke insulating portion 162 adjacent to the through hole 173, and the insulating piece 164 is located at a portion located on the opposite side of the insulating piece 163 with respect to the through hole 173. It is connected continuously. Thus, by inserting the stator teeth 141 from the through holes 173, the insulating pieces 163 and the insulating pieces 164 are arranged on both sides of the stator teeth 141. In the rotating electrical machine 100 according to the first embodiment, the insulating piece 163,
The insulating pieces 164 are arranged at intervals in the circumferential direction of the stator 130.

  FIG. 5 is a perspective view showing an assembling process when the insulator 160 is attached to the coil 132 in the manufacturing process of the rotating electrical machine. In FIG. 5, a so-called edge width coil is used as the coil 132. The coil wire constituting the coil 132 has a square cross section in a direction perpendicular to the extending direction of the coil wire. And the coil 132 is comprised by laminating | stacking, winding this coil wire cyclically | annularly. For this reason, a through hole 133 extending in the coil wire lamination direction is formed in the central portion of the coil 132.

  When attaching the coil 132 to the insulator 160, first, a load is applied to the insulating piece 163 and the insulating piece 164 from the outside, so that the tip of the insulating piece 163 and the tip of the insulating piece 164 are close to each other. 163 and the insulating piece 164 are bent. In this manner, the teeth insulating portion 161 is inserted into the through hole 133 of the coil 132 with the insulating piece 163 and the insulating piece 164 being brought close to each other. At this time, even if the coil wire of the coil 132 is displaced in the manufacturing process of the coil 132 and the width of the through hole 133 is partially narrowed, the tip end portion of the tooth insulating portion 161 is narrowed as described above. Thus, the tooth insulating portion 161 can be easily inserted into the through hole 133.

  That is, by making the teeth insulating portion 161 elastically deformable, the teeth insulating portion 161 can be easily attached to the coil 132 in the assembly process of the coil 132 and the insulator 160. For this reason, the manufacturing process of a rotary electric machine can also be simplified.

  Here, in a no-load state in which no load is applied from the outside, the teeth insulating portion 161 stands upright with respect to the yoke insulating portion 162 along the side surface of the stator teeth 141 to be mounted, as shown in FIG. is doing. Then, when a load is applied from the outside, it can be deformed as shown in FIG. 5, and when the applied load is removed, as shown in FIG. Return to become.

  Here, the coil 132 is formed in an oval shape, and the height of the inner peripheral surface of the coil 132 defining the through-hole 133 in the direction of the rotation center axis O is along the circumferential direction of the stator 130. It forms so that it may become large as it goes to the center part of the width direction. For this reason, the tapered teeth insulating portion 161 can pass through the central portion in the width direction of the coil 132 in the through-hole 133.

  In FIG. 4, a projecting portion 165 and a projecting portion 167 projecting in the direction of the rotation center axis O are formed on the end surface of the support portion 174 arranged in the direction of the rotation center axis O of the stator 130 shown in FIG. 1. ing. Similarly, a projecting portion 166 and a projecting portion 168 projecting in the direction of the rotation center axis O are formed on the end surface of the support portion 175 arranged in the direction of the rotation center axis O of the stator 130.

  Here, in FIG. 4, the insulating piece 163 includes a support portion 174 having one side portion connected to the yoke insulating portion 162 and formed in a flat plate shape along the peripheral surface (side surface) of the stator tooth 141. ing. An engagement portion 170 that is bent away from the insulating piece 164 is formed at a tip portion of the support portion 174 that is located on the opposite side of the side portion that is connected to the yoke insulating portion 162. .

  In addition, the insulating piece 164 includes a support portion 175 having one side portion connected to the yoke insulating portion 162 and formed in a flat plate shape along the peripheral surface (side surface) of the stator tooth 141. An engaging portion 171 that is bent away from the insulating piece 163 is formed at a tip portion of the support portion 175 that is connected to the yoke insulating portion 162 and located on the opposite side of the side portion.

  The protrusions 165 and 167 are formed on the insulating piece 164 side of the upper end surface and the lower end surface of the support portion 174. Therefore, the end portions of the projecting portions 165 and 167 that support the inner peripheral surface of the coil 132 are more than the main surface located on the opposite side of the main surface facing the support portion 175 in the surface of the support portion 174. Is also located on the insulating piece 164 side. Similarly, the protruding portions 166 and 168 are formed on the insulating piece 164 side of the upper end surface and the lower end surface of the support portion 175. For this reason, the ends of the protrusions 166 and 168 that support the inner peripheral surface of the coil 132 are located on the main surface of the support portion 175, rather than the main surface that is opposite to the main surface that faces the support portion 174. It is located on the insulating piece 163 side.

  6 is a perspective view showing a process after the process shown in FIG. 5 in the manufacturing process of the rotating electrical machine, and when the coil 132 is attached to the stator tooth 141 in a state where the coil 132 and the insulator 160 are assembled. The process of is shown.

  As shown in FIG. 6, after the insulator 160 is inserted into the through hole 133, the load applied to the teeth insulating portion 161 is removed. Thereby, the insulating piece 163 and the insulating piece 164 return to the original state, and the insulating piece 163 and the insulating piece 164 are disposed along the inner peripheral surface of the coil 132.

  When the insulating piece 163 and the insulating piece 164 return to the original state, the engaging portions 170 and the engaging portions 171 engage with the end surfaces of the coils 132. Further, the yoke insulating portion 162 is close to or abuts with an end surface located on the side opposite to the end surface with which the engaging portion 170 and the engaging portion 171 are engaged among the end surfaces arranged in the coil wire lamination direction of the coil 132, The coil 132 is assembled to the insulator 160. And since the end surface of the coil 132 is pressed down by the engaging part 170 and the engaging part 171, it can suppress that the coil 132 springs back.

  The protrusions 165, 166, 167, and 168 are in contact with the inner peripheral surface of the coil 132, and the support portions 174 and 175 are in contact with the inner peripheral surface of the coil 132. The protrusions 165 and 167 and the protrusions 166 and 168 support the inner peripheral surface of the coil 132, so that the upper end surface and the lower end surface of the stator tooth 141 are prevented from contacting the coil 132. And insulation between the split stator core 142 can be ensured. In this way, a space in which the stator teeth 141 are inserted is defined between the support portion 174 and the support portion 175.

  As described above, in the rotating electrical machine 100 according to the present embodiment, the coil 132 can be fixed by the insulator 160 alone. Therefore, when the rotating electrical machine 100 is assembled, an assembly of the coil 132 and the insulator 160 is separately provided. Can be manufactured.

  Then, in a state where the insulator 160 and the coil 132 are assembled, the stator teeth 141 of the split stator core 142 is inserted from the through hole 173 of the yoke insulating portion 162 and inserted between the insulating piece 164 and the insulating piece 163. Is done. In this manner, by attaching the assembly of the insulator 160 and the coil 132 to each divided stator core 142, the assembly can be easily attached to the stator teeth 141.

  The stator teeth 141 are insulated from the coil 132 by the support portions 174 and 175 by inserting the stator teeth 141 between the support portions 174 and 175.

  Further, the coil 132 is formed in an oval shape, and portions facing the upper end surface and the lower end surface of the stator teeth 141 arranged in the direction of the rotation center axis O are directed to the central portion in the width direction of the upper end surface and the lower end surface. Accordingly, it bulges away from the rotation center axis O. For this reason, the width direction center part of the upper end surface and lower end surface of the stator tooth 141 is largely separated from 132, and the insulation between the coil 132 and the stator tooth 141 is ensured.

  A plurality of divided stator cores 142 to which the coils 132 are attached are assembled via the insulator 160, and then the plurality of divided stator cores 142 are arranged in an annular shape so that each stator tooth 141 protrudes radially inward. Then, an annular fixing member is attached to the outer peripheral surface of the divided stator core 142 arranged in an annular shape by shrink fitting or press fitting.

  Thereby, the stator 130 is formed. And in the rotary electric machine 100 which concerns on this Embodiment, the stator 130 is fixed to a motor case, and the rotor 120 fixed to the rotating shaft 110 is arrange | positioned inside the stator 130 after that. In this way, the rotating electrical machine according to the present embodiment can be manufactured.

  As described above, in the rotating electrical machine and the method for manufacturing the rotating electrical machine according to the present embodiment, the insulation between the split stator core 142 and the coil 132 can be ensured by attaching the insulator 160 to the stator teeth 141. Insulation between the split stator core 142 and the coil 132 can be easily ensured, and the assembly process of the rotating electrical machine can be simplified.

  In the present embodiment, the rotating electrical machine 100 in which the stator core is configured by the plurality of divided stator cores 142 has been described, but the rotating electrical machine including the divided stator core 142 is not limited thereto. That is, the assembly of the insulator 160 and the coil 132 may be attached to the stator teeth of the stator core formed in an annular shape in advance. Furthermore, although the inner rotor type rotating electrical machine has been described in the present embodiment, the present invention can also be applied to an outer rotor type rotating electrical machine.

  FIG. 7 is a perspective view showing a modified example of the insulator 160. In FIG. 7, components that are the same as or correspond to the components shown in FIGS. 1 to 6 are given the same reference numerals, and descriptions thereof may be omitted.

  The insulator 180 shown in FIG. 7 includes an insulating piece 163 and an insulating piece 164 that are connected to the yoke insulating portion 162 at an interval. The insulating piece 163 includes a support portion 184 that is connected to the yoke insulating portion 162, and an engagement portion 170 that is provided at the tip of the support portion 184. The insulating piece 164 also includes a support portion 185 that is connected to the yoke insulating portion 162 and an engagement portion 171 that is formed at the tip of the support portion 185.

  Here, the insulating piece 163 and the insulating piece 164 are formed at intervals along the circumferential direction of the stator 130 shown in FIG.

  Of the surfaces of the support portion 184, the inner surface facing the support portion 185 is formed along the side surface of the stator teeth 141, and in the example shown in FIG. Yes.

  Further, of the surface of the support portion 185, the inner surface facing the support portion 184 is formed along the side surface of the stator teeth 141. In the example shown in FIG. Yes.

  Of the surface of the support portion 184, the side surface opposite to the inner surface facing the support portion 185 is upright from the yoke insulating portion 162, and among the surface of the support portion 185, the support portion 184 is The side surface located on the opposite side to the inner surface that faces is upright with respect to the yoke insulating portion 162.

  And the teeth insulation part 161 is provided with the connection part 189 which connects the upper end of the support part 185, and the upper end of the support part 184 in a row. The connecting portion 189 projects from the inner surface of the support portion 184 toward the support portion 185 as it goes from the front end portion of the support portion 184 to the yoke insulating portion 162, and further, the yoke insulating portion 162 extends from the front end portion side of the support portion 185. It is formed so as to gradually protrude toward the support portion 184 as it goes to the side. For this reason, the inner peripheral surface of the connecting portion 189 is formed to be U-shaped when viewed in plan from the rotation center axis O direction.

  The connecting portion 188 is also formed in the same manner as the connecting portion 189, and is curved so that the side surface on the insulating piece 163 side and the side surface on the insulating piece 164 side approach each other toward the yoke insulating portion 162 side. When formed in a plan view from the direction of the rotation center axis O, it is formed to be U-shaped.

  A U-shaped protruding portion 181 is formed on the upper surface of the connecting portion 189 along the inner peripheral edge of the connecting portion 189, and is the lower surface of the connecting portion 188, the inner peripheral edge of the connecting portion 188. A U-shaped protrusion 182 is formed along the portion. The U-shaped projecting portion 181 is formed along the inner peripheral surface of the connecting portion 189, and the U-shaped projecting portion 182 is also formed along the inner peripheral surface of the connecting portion 188.

  Here, the U-shaped projecting portion 181 includes a projecting portion 186 formed on the upper end surface side of the support portion 184 and a projecting portion 187 formed on the upper end surface side of the support portion 185.

  The projecting portion 186 extends from the tip end side of the insulating piece 163 toward the yoke insulating portion 162, and is curved toward the insulating piece 164 side on the yoke insulating portion 162 side. Further, the protruding portion 187 also extends from the tip end portion of the insulating piece 164 toward the yoke insulating portion 162 side, and is curved so as to approach the insulating piece 163 on the yoke insulating portion 162 side. And the protrusion part 186 and the protrusion part 187 are mutually connected by the edge part by the side of the yoke insulation part 162, As a result, the U-shaped U-shaped protrusion part 181 is formed. For this reason, the bases of the U-shaped projecting portion 181 and the connecting portion 189 are curved in an arc shape.

  Further, the U-shaped projecting portion 182 is configured in the same manner as the U-shaped projecting portion 181, and the U-shaped projecting portion 182 includes the projecting portion formed on the lower end surface of the support portion 184 and the lower end surface of the support portion 185. And a protruding portion formed on the surface.

  Further, both the protruding portion formed on the lower end surface side of the support portion 184 and the protruding portion formed on the lower end surface side of the support portion 185 are connected to the yoke insulating portion from the distal end portion of each insulating piece 163 and insulating piece 164. It extends toward the 162 side.

  The protruding portion located at the lower end portion of the insulating piece 163 is curved toward the insulating piece 164 side on the yoke insulating portion 162 side, and the protruding portion formed at the lower end portion of the insulating piece 164 is also yoke insulating. On the part 162 side, it is curved toward the insulating piece 163 side. The protruding portion formed at the lower end portion of the insulating piece 163 and the protruding portion formed at the lower end portion of the insulating piece 164 are both connected on the yoke insulating portion 162 side, resulting in a U-shaped protruding portion. 182 is formed. For this reason, the base portions of the teeth insulating portion 161 and the connecting portion 188 are curved in an arc shape.

  As described above, the insulating piece 163 is formed in the support portion 184 and a portion adjacent to the support portion 184 in the direction of the rotation center axis O, and as it goes from the tip end side of the insulating piece 163 toward the yoke insulating portion 162 side. And a bending portion that curves toward the insulating piece 164 side. Further, the insulating piece 164 is formed in a support portion 185 and a portion adjacent to the support portion 185 in the direction of the rotation center axis O, and the insulation piece 164 is insulated from the tip end side of the insulating piece 164 toward the yoke insulating portion 162 side. A bending portion that curves toward the piece 163 side.

  FIG. 8 is a perspective view showing a process of mounting the insulator 180 shown in FIG. In FIG. 8, the inner peripheral surfaces of the connecting portion 189 and the connecting portion 188 are curved in a U-shape, and the U-shaped projecting portion 181 and the U-shaped projecting portion 182 are also curved in a U-shape. Therefore, the insulating piece 163 and the insulating piece 164 can be easily elastically deformed so that the tip portions thereof are close to each other. In particular, each of the U-shaped projecting portions 181, the connecting portions 189, the U-shaped projecting portions 182, and the connecting portions 188 can be easily elastically deformed because the base portion is curved in an arc shape.

  For this reason, the insulator 180 can be easily attached to the coil 132, and an assembly of the coil 132 and the insulator 180 can be easily manufactured.

(Embodiment 2)
A method for manufacturing the rotating electrical machine according to the second embodiment of the present invention will be described with reference to FIGS. 9 and 10. 9 and 10, the same or corresponding components as those shown in FIGS. 1 to 8 are denoted by the same reference numerals and description thereof may be omitted.

  FIG. 9 is a perspective view of an insulator 190 attached to the rotating electrical machine according to the second embodiment. As shown in FIG. 9, in the insulator 190, when the load is not applied to the teeth insulating portion 161, the insulating piece 164 and the insulating piece 163 come closer to each other as they go from the base side to the tip side. Is formed.

  For this reason, the teeth insulating portion 161 is formed so as to taper as it goes from the base side to the tip side.

  In this insulator 190 as well, the support portion 174 and the support portion 175 are formed in a flat plate shape, and the engagement portion 170 and the engagement portion 171 are formed at the distal ends of the support portion 174 and the support portion 175. ing. Protrusions 165, 166, 167, and 168 are formed on the upper and lower end surfaces of the support portions 174 and 175, respectively.

  FIG. 10 is a perspective view showing a process of assembling the insulator 190 shown in FIG.

  As shown in FIG. 10, the teeth insulating portion 161 of the insulator 190 configured as described above is inserted into the through hole 133 of the coil 132.

  Here, since the teeth insulating portion 161 of the insulator 190 is formed to be tapered in a normal state when a load is applied from the outside, the teeth insulating portion 161 of the insulator 190 can be easily inserted into the through hole 133. Can be inserted.

  Then, the stator teeth 141 of the split stator core 142 are inserted into the through holes 173 of the yoke insulating portion 162.

  As a result, the insulating piece 163 and the insulating piece 164 are pushed up by the stator teeth 141, and the insulating piece 163 and the insulating piece 164 are elastically deformed along the inner surface of the coil 132.

  Further, the engaging portion 170 formed at the distal end portion of the insulating piece 163 engages with the end surface of the coil 132, and the engaging portion 171 formed at the distal end portion of the insulating piece 164 engages with the end surface of the coil 132. To do. In this way, the insulator 190 is assembled to the coil 132, and the coil 132 is attached to the divided stator core 142 of the divided stator core 142.

(Embodiment 3)
A rotating electrical machine and a method of manufacturing the rotating electrical machine according to Embodiment 3 of the present invention will be described with reference to FIGS. 11 to 14, the same or corresponding components as those in FIGS. 1 to 10 are denoted by the same reference numerals, and the description thereof may be omitted.

  FIG. 11 is a perspective view showing the divided stator core 142 constituting the stator of the rotating electrical machine according to the third embodiment and the coil 132 attached to the divided stator core 142.

  As shown in FIG. 11, in the rotating electrical machine according to the third embodiment, a coil 132 is attached to stator teeth 141 of split stator core 142 via insulator 200.

  FIG. 12 is an exploded perspective view of the insulator 200 that is attached to the split stator core 142 shown in FIG. 11 and insulates the coil 132 from the split stator core 142.

  As shown in FIG. 12, the insulator 200 extends along the inner peripheral surface of the yoke portion 140 of the divided stator core 142 shown in FIG. 11, and is supported by the yoke insulating portion 202 supported by the inner peripheral surface of the yoke portion 140. And a teeth insulating portion 201 formed separately from the yoke insulating portion 202. The yoke insulating portion 202 has a flat plate shape, and a through-hole 277 that can receive the stator teeth 141 is formed at the center thereof.

  The teeth insulating portion 201 is disposed between the side surface of the stator teeth 141 and the coil 132, and is provided continuously with a teeth insulating portion 261 that insulates the stator teeth 141 and the coil 132 from one end portion of the teeth insulating portion 261. An annular connecting member 278 is provided.

  The teeth insulating portion 261 has an insulating piece 263 whose one side portion is connected to the connecting member 278, and one side portion which is connected to the connecting member 278 so as to be spaced from the insulating piece 263, and the insulating piece 263. And an insulating piece 264 facing each other.

  The insulating piece 263 is formed in a flat plate shape and extends along the side surface of the stator tooth 141, the protrusion 265 formed on the upper end surface of the support portion 274, and the lower end surface of the support portion 274. And a projecting portion 267 formed.

  The insulating piece 264 is formed in a flat plate shape and extends along the side surface of the stator tooth 141, the protrusion 266 formed on the upper end surface of the support portion 275, and the lower end surface of the support portion 275. And a projecting portion 268 formed.

  The connection member 278 includes a connecting portion 273 that connects the upper end portion of the support portion 274 and the upper end portion of the support portion 275, and a connection that connects the lower end portion of the support portion 274 and the lower end portion of the support portion 275. Part 272. Further, the connecting member 278 is connected to the support portion 274, and is connected to the engaging portion 270 in which the connecting portions 273 and 272 are connected to both ends, and the support portion 275, and the connecting portions 272 and 273 are connected to both ends. And an engaging portion 271 provided continuously.

  The engaging portion 270 is bent away from the support portion 275 from the end portion of the support portion 274, and can be engaged with the end surface of the coil 132. Further, the engaging portion 271 is bent away from the support portion 274 from the end portion of the support portion 275, and can be engaged with the end surface of the coil 132. The connecting member 278 is formed in an annular shape as described above, and defines a through hole 279 that can receive the end face of the stator tooth 141.

  FIG. 13 is a perspective view showing an assembling process for assembling the coil 132, the insulator 200, and the split stator core 142 in the manufacturing process of the rotating electrical machine according to the third embodiment. As shown in FIG. 13, first, the stator teeth 141 of the split stator core 142 is inserted into the through hole 277 of the yoke insulating portion 202, and the yoke insulating portion 202 is attached to the split stator core 142.

  Then, a load is applied to the distal end portions of the insulating piece 263 and the insulating piece 264 of the tooth insulating portion 261, and the insulating piece 263 and the insulating piece 264 are elastically deformed so that the distal end portions thereof are close to each other. Thereafter, the tooth insulating portion 261 is inserted into the through hole 133 of the coil 132. Thus, the teeth insulating portion 261 can be inserted into the through-hole 133 by forming the teeth insulating portion 261 in a tapered shape from the connecting member 278 side toward the distal end portion side.

  In the third embodiment as well, the coil 132 is formed in an oval shape, and the height of the through hole 133 in the direction of the rotation center axis O increases toward the center portion in the width direction of the coil 132. Therefore, by bringing the insulating piece 263 and the insulating piece 264 close to each other, the tapered tooth insulating portion 261 can pass through the central portion in the width direction of the through hole 133.

  And after the engaging part 270 and the engaging part 271 contact | abut to the end surface of the coil 132, the load applied to the insulating piece 263 and the insulating piece 264 is cancelled | released. Thereby, the insulating piece 263 and the insulating piece 264 stand up along the inner peripheral surface of the coil 132. Thereby, a space in which the stator teeth 141 can be inserted is defined between the insulating piece 263 and the insulating piece 264.

  Then, the stator teeth 141 of the split stator core 142 to which the yoke insulating portion 202 is attached are inserted between the insulating pieces 263 and 264.

  Thereby, stator teeth 141 and coil 132 are insulated by teeth insulating portion 261, and coil 132 and yoke portion 140 are insulated by yoke insulating portion 202.

  As described above, also in the rotating electrical machine according to the third embodiment, the divided stator core 142, the coil 132, and the insulator 200 can be easily assembled as in the first and second embodiments. The assembly process can be simplified.

  FIG. 14 is a perspective view showing a modification of the insulator attached to the rotating electrical machine according to the third embodiment. In FIG. 14, the same or corresponding components as those shown in FIG. 12 may be given the same reference numerals and explanation thereof may be omitted.

  As shown in FIG. 14, the insulator 300 includes a teeth insulating portion 361 and a yoke insulating portion 202 shown in FIG. 13.

  The teeth insulating portion 361 includes an annular connecting member 378, an insulating piece 363 and an insulating piece 364 that are connected to the connecting member 378, an upper end surface of the insulating piece 363, and an upper end surface of the insulating piece 264. A connecting portion 389 for connecting, and a connecting portion 388 for connecting the lower end surface of the insulating piece 364 and the lower end surface of the insulating piece 363 are provided.

  The insulating piece 363 includes a support portion 374, and the insulating piece 364 also includes a support portion 375.

  The inner surface of the connecting portion 389 is curved so that the side surface on the insulating piece 363 side and the side surface on the insulating piece 364 side approach each other from the distal end side of the insulating piece 363 and the insulating piece 364 toward the connecting member 378. ing. For this reason, the inner surface of the connecting portion 389 is curved in a U shape.

  Further, the connecting portion 388 is also formed in the same manner as the connecting portion 389, and the side surface on the insulating piece 363 side and the side surface on the insulating piece 364 side as it goes from the distal end side of the insulating pieces 363 and 364 to the connecting member 378. Are curved so as to be close to each other. For this reason, the inner surface of the connecting portion 388 is also curved in a U shape.

  A U-shaped projecting portion 365 extending along the inner surface of the connecting portion 389 is formed on the upper surface of the connecting portion 389, and the lower surface of the connecting portion 388 extends along the inner surface of the connecting portion 388. An extending U-shaped protrusion 367 is formed.

  The U-shaped projecting portion 365 linearly extends from the distal end side of the insulating piece 363 toward the connecting member 378, and is curved toward the insulating piece 364 side on the connecting member 378 side, and the insulating piece 364. And a protruding portion that protrudes toward the insulating piece 363 on the connecting member 378 side, and the protruding portions are connected to each other on the connecting member 378 side. Thus, a U-shaped projecting portion 365 that is curved in a U shape when viewed in plan from the direction of the rotation center axis O is formed.

  Further, the U-shaped projecting portion 367 is formed in the same manner as the U-shaped projecting portion 365. The U-shaped projecting portion 367 linearly extends from the distal end side of the insulating piece 363 toward the connecting member 378, and is curved toward the insulating piece 364 side on the connecting member 378 side, and the insulating piece 364. And a protruding portion that protrudes toward the insulating piece 363 on the connecting member 378 side, and the protruding portions are connected to each other on the connecting member 378 side. Thus, a U-shaped projecting portion 367 that is curved in a U shape when viewed in plan from the direction of the rotation center axis O is formed.

  In the teeth insulating portion 361 formed in this way, the insulating piece 363 and the insulating piece 364 are easily insulated when elastically deforming so that the tip of the insulating piece 363 and the tip of the insulating piece 364 are brought close to each other. The piece 363 and the insulating piece 364 can be deformed.

  Although the embodiment of the present invention has been described above, it should be considered that the embodiment disclosed this time is illustrative and not restrictive in all respects. The scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims. Furthermore, the above numerical values are examples, and are not limited to the above numerical values and ranges.

  The present invention is suitable for a rotating electrical machine, an insulating member, and a method for manufacturing the rotating electrical machine.

It is sectional drawing of the rotary electric machine which concerns on Embodiment 1 of this invention. It is sectional drawing in the II-II line | wire in FIG. It is a perspective view which shows a split stator core and the insulator and coil with which this split stator core was mounted | worn. It is a perspective view of an insulator. It is a perspective view which shows the assembly | attachment process when attaching an insulator to a coil among the manufacturing processes of a rotary electric machine. It is a perspective view which shows the process after the process shown in FIG. 5 among the manufacturing processes of a rotary electric machine, Comprising: The process when attaching a coil to stator teeth in the state which assembled | attached the coil and the insulator is shown. It is a perspective view which shows the modification of an insulator. It is a perspective view which shows the process of mounting | wearing the coil with the insulator shown by FIG. It is a perspective view of the insulator with which the rotary electric machine which concerns on this Embodiment 2 was mounted | worn. It is a perspective view which shows the process of assembling | attaching the insulator shown by FIG. 9 to a coil. It is a perspective view which shows the split stator core which comprises the stator of a rotary electric machine in this Embodiment 3, and the coil with which this split stator core was mounted | worn. FIG. 12 is an exploded perspective view of an insulator that is mounted on the divided stator core shown in FIG. 11 and insulates the coil from the divided stator core. It is a perspective view which shows the assembly | attachment process of assembling a coil, an insulator, and a division | segmentation stator core among the manufacturing processes of the rotary electric machine which concerns on this Embodiment 3. FIG. It is a perspective view which shows the modification of the insulator with which the rotary electric machine which concerns on this Embodiment 3 was mounted | worn.

Explanation of symbols

  100 rotating electric machine, 110 rotating shaft, 120 rotor, 121 rotor core, 122 permanent magnet, 124 resin, 126 magnet insertion hole, 130 stator, 131 stator core, 132 coil, 133 through hole, 140 yoke part, 141 stator teeth, 142 split stator core , 160 Insulator, 161 Teeth insulating part, 162 Yoke insulating part, 163, 164 Insulating piece, 165, 166, 167, 168 Protruding part, 170, 171 Engaging part, 181, 182 U-shaped projecting part, 184, 185 Support Part, 185, O Rotation center axis.

Claims (14)

A rotor provided rotatably,
An annular stator disposed around the rotor,
The stator includes a stator core including a yoke portion extending in a circumferential direction of the stator, a stator core projecting from the yoke portion toward the rotor, an insulating member attached to the stator tooth, and the stator core by the insulating member. And a coil wound around the stator teeth,
The insulating member is provided between an inner peripheral surface of the coil and an outer peripheral surface of the stator teeth, a tooth insulating portion capable of insulating the stator teeth and the coil, and the teeth insulating portion are connected, Including a connecting portion that supports the teeth insulating portion,
The teeth insulating portion is provided with a first insulating piece having one side continuously connected to the connecting portion, and is spaced from the first insulating piece along a circumferential surface of the stator teeth. A rotating electrical machine including a second insulating piece provided to face the insulating piece, wherein the first and second insulating pieces are elastically deformable so that their distal end portions are close to or separated from each other. The first insulating piece and the second insulating piece are arranged at intervals in the circumferential direction of the stator,
The first insulating piece protrudes in the direction of the central axis from one end surface of the first insulating piece positioned in the direction of the central axis of the stator, and a first protruding portion that supports the inner peripheral surface of the coil; A second projecting portion projecting from the other end surface and supporting the inner peripheral surface of the coil;
The second insulating piece protrudes in the central axis direction from one end surface of the second insulating piece positioned in the central axis direction of the stator, and a third protruding portion that supports the inner peripheral surface of the coil; The rotating electrical machine according to claim 1, further comprising a fourth projecting portion projecting from the other end surface. Among the surfaces of the first insulating piece, the inner surface facing the second insulating piece is a first support surface that supports the side surface of the starter teeth, and the direction of the central axis of the stator with respect to the first support surface And a first curved surface that is curved so as to be closer to the second insulating piece as it goes from the tip end portion of the first insulating piece toward the connecting portion,
Among the surfaces of the second insulating piece, the inner surface facing the first insulating piece is a second support surface that supports the side surface of the starter teeth, and the center axis direction of the stator with respect to the second support surface And a second curved surface that is curved so as to approach the first insulating piece as it goes from the distal end portion of the second insulating piece to the connecting portion,
The rotating electrical machine according to claim 1, wherein the first curved surface and the second curved surface are connected to each other.   The connecting portion extends along a peripheral surface of the yoke portion, is disposed between the peripheral surface of the yoke portion and the coil, and is a yoke insulating portion capable of insulating the coil and the yoke portion. The rotating electrical machine according to any one of claims 1 to 3.   The insulating member is provided separately from the teeth insulating portion and the connecting portion, and is disposed between a peripheral surface of the yoke portion and the coil, and can insulate the coil from the yoke portion. The rotating electrical machine according to any one of claims 1 to 3, further comprising a section.   The first insulating piece includes a first engaging portion that is provided at a tip portion of the first insulating piece, bends away from the second insulating piece, and engages with an end surface of the coil. The second insulating piece includes a second engaging portion that is provided at a tip portion of the second insulating piece, bends away from the first insulating piece, and engages with an end surface of the coil. The rotating electrical machine according to any one of claims 1 to 5. A first insulating piece disposed on one of the first side surfaces arranged in the circumferential direction of the stator among the stator teeth peripheral surfaces provided in the annularly formed stator;
A second insulating piece disposed on a second side located opposite to the first side;
One side of the first insulating piece is connected to support the first insulating piece, and one side of the second insulating piece is connected to connect the second insulating piece. Prepared,
The other side part located on the opposite side to the one side part of the first insulating piece, and the other side part located on the opposite side to the one side part of the second insulating side. An insulating member that is elastically deformable so as to be close to or away from each other. The first insulating piece protrudes in the direction of the central axis from one end surface of the first insulating piece positioned in the direction of the central axis of the stator, and a first protruding portion that supports the inner peripheral surface of the coil; A second projecting portion projecting from the other end surface and supporting the inner peripheral surface of the coil;
The second insulating piece protrudes in the central axis direction from one end surface of the second insulating piece positioned in the central axis direction of the stator, and a third protruding portion that supports the inner peripheral surface of the coil; The insulating member according to claim 7, further comprising a fourth projecting portion projecting from the other end surface. Among the surfaces of the first insulating piece, the inner surface facing the second insulating piece is a first support surface that supports the side surface of the starter teeth, and the direction of the central axis of the stator with respect to the first support surface And a first curved surface that is curved so as to be closer to the second insulating piece as it goes from the tip end portion of the first insulating piece toward the connecting portion,
Among the surfaces of the second insulating piece, the inner surface facing the first insulating piece is a second support surface that supports the side surface of the starter teeth, and the center axis direction of the stator with respect to the second support surface And a second curved surface that is curved so as to approach the first insulating piece as it goes from the distal end portion of the second insulating piece to the connecting portion,
The insulating member according to claim 7 or 8, wherein the first curved surface and the second curved surface are connected to each other to form an arcuate base.   The insulating member according to any one of claims 7 to 9, wherein the connection portion is formed so as to protrude in a direction intersecting the first and second insulating pieces. The first insulating piece is formed on the other side located on the opposite side to the one side of the first insulating piece, and bends away from the second insulating piece. Including
The second insulating portion is formed on the other side portion located on the opposite side to the one side portion of the second insulating piece, and a second bent portion that bends away from the first insulating side. The insulating member according to any one of claims 7 to 10, further comprising: The first insulating piece, the second insulating piece arranged to face the first insulating piece, and the one side portions of the first and second insulating pieces are connected to each other with an interval therebetween, Providing an insulating member including an annular connecting portion that supports the first and second insulating pieces;
The first and second insulating pieces in a state in which the tip portion of the first insulating piece and the tip portion of the second insulating piece are brought close to each other in a through hole defined by a coil wound in an annular shape. Inserting
And a step of inserting stator teeth between the first and second insulating pieces inserted into the coil. The first insulating piece includes a first engaging portion formed at a distal end portion of the first insulating piece and bent away from the second insulating piece,
The second insulating piece includes a second engaging portion that is formed at a distal end portion of the second insulating piece and bends away from the first insulating piece,
The first and second insulating pieces are inserted into the coil, and the first and second engaging portions are engaged with end surfaces of the coil to fix the insulating member to the inner peripheral surface of the coil. The manufacturing method of the rotary electric machine of Claim 12.   The first and second insulating pieces are formed in a flat plate shape and are formed so that the distance from each other decreases from the connecting portion side toward the distal end portion side. The first and second insulating pieces are caused to rise along the outer peripheral surface of the stator teeth and the inner peripheral surface of the coil by being inserted between the second insulating pieces. A method of manufacturing a rotating electrical machine.

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