JP2017103850A - Rotary electric machine - Google Patents

Rotary electric machine Download PDF

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JP2017103850A
JP2017103850A JP2015233163A JP2015233163A JP2017103850A JP 2017103850 A JP2017103850 A JP 2017103850A JP 2015233163 A JP2015233163 A JP 2015233163A JP 2015233163 A JP2015233163 A JP 2015233163A JP 2017103850 A JP2017103850 A JP 2017103850A
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insulator
circumferential
radial direction
tooth
main body
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JP6103559B1 (en
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穣 井倉
Minoru Igura
穣 井倉
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Priority to JP2015233163A priority Critical patent/JP6103559B1/en
Priority to CN201610530367.3A priority patent/CN106816979B/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
    • H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

PROBLEM TO BE SOLVED: To obtain a rotary electric machine which can prevent a slot area from being reduced and improve the strength of an insulator.SOLUTION: A rotary electric machine comprises: a stator iron core 1 having a tooth portion 12 including a core back portion 11, a tooth portion main body 121 and a flange portion 122; an insulative insulator 2 provided at an axial end portion of the tooth portion 12; and an insulating paper 3 provided on the circumferential side surface of the tooth portion 12. A cutout portion 123 extending in the radial direction extends over the entire region in the radial direction so that a convex portion 124 is formed at the end portion in the axial direction of the tooth portion 12 at the circumferential end portion in the axial direction end portion of the tooth portion 12. When viewed in the axial direction, the dimension A between the circumferential side surface of the convex portion 124 and the circumferential end surface of the flange portion 122 is larger than the dimension B between the circumferential side surface of the convex portion 124 and the circumferential end surface of the tooth portion main body 121. The insulator 2 has a wall portion 21 disposed in the cutout portion 123.SELECTED DRAWING: Figure 1

Description

この発明は、固定子鉄心にインシュレータが設けられた回転電機に関する。   The present invention relates to a rotating electrical machine in which an insulator is provided on a stator core.

従来、コアバック部とコアバック部から径方向内側に延び先端部に周方向外側へ延びる鍔部を含んだティース部とを有する固定子鉄心と、ティース部の軸方向端部に設けられた絶縁性のインシュレータと、ティース部の周方向側面に設けられた絶縁シートとを備え、ティース部の軸方向端部におけるスロットに対向する部分には、全域に渡って切欠き部が形成され、インシュレータは、ティース部の切欠き部の全域に配置される壁部を有している回転電機が知られている（例えば、特許文献１参照）。   Conventionally, a stator core having a core back portion and a tooth portion including a flange portion extending radially inward from the core back portion and extending outward in the circumferential direction, and insulation provided at an axial end portion of the tooth portion And an insulating sheet provided on the side surface in the circumferential direction of the tooth portion, a portion facing the slot at the axial end of the tooth portion is formed with a notch over the entire area, There is known a rotating electrical machine having a wall portion disposed in the entire region of a notch portion of a tooth portion (see, for example, Patent Document 1).

特開２００１−１１２２０５号公報JP 2001-112205 A

しかしながら、切欠き部が鍔部におけるスロットに対向する部分にも形成されており、この鍔部に形成された切欠き部にもインシュレータの壁部が配置されるので、鍔部に形成された切欠き部に配置されるインシュレータの部分の肉厚が小さくなり、インシュレータの強度が低くなってしまう問題点があった。また、インシュレータの強度を向上させるために、鍔部に形成された切欠き部に配置されているインシュレータの部分の肉厚を厚くする場合には、巻線が配置されるスロット面積が小さくなってしまうという問題点があった。   However, the notch is also formed in the portion of the collar facing the slot, and the insulator wall is also disposed in the notch formed in the collar, so the notch formed in the collar There is a problem that the thickness of the portion of the insulator disposed in the notch portion is reduced, and the strength of the insulator is lowered. Further, in order to improve the strength of the insulator, when the thickness of the portion of the insulator disposed in the notch formed in the flange portion is increased, the slot area in which the winding is disposed is reduced. There was a problem of end.

この発明は、スロット面積が小さくなることを防ぐとともにインシュレータの強度を向上させることができる回転電機を提供するものである。   The present invention provides a rotating electrical machine capable of preventing the slot area from being reduced and improving the strength of the insulator.

この発明に係る回転電機は、コアバック部およびコアバック部から径方向内側に延びたティース部本体とティース部本体の先端部に設けられ周方向外側へ延びる鍔部とを含んだティース部を有する固定子鉄心と、ティース部の軸方向端部に設けられた絶縁性のインシュレータと、ティース部の周方向側面に設けられた絶縁シートとを備えた回転電機であって、ティース部の軸方向端部における周方向端部には、ティース部の軸方向端部に軸方向に突出し径方向に延びる凸部が径方向全域に渡って形成されるように、径方向に延びた切欠き部が径方向全域に渡って形成され、軸方向に視た場合に、凸部の周方向側面と鍔部の周方向端面との間の寸法が、凸部の周方向側面とティース部本体の周方向端面との間の寸法よりも大きく、インシュレータは、切欠き部に配置される壁部を有している。   The rotating electrical machine according to the present invention has a teeth portion including a core back portion, a teeth portion main body extending radially inward from the core back portion, and a flange portion provided at a distal end portion of the teeth portion main body and extending outward in the circumferential direction. A rotating electrical machine including a stator core, an insulating insulator provided at an axial end of the tooth portion, and an insulating sheet provided on a circumferential side surface of the tooth portion, the axial end of the tooth portion The circumferential end portion of the tooth portion has a radially extending notch so that a convex portion extending in the axial direction and extending in the radial direction is formed over the entire radial direction at the axial end portion of the tooth portion. The dimension between the circumferential side surface of the convex portion and the circumferential end surface of the flange portion when formed in the axial direction and viewed in the axial direction is the circumferential side surface of the convex portion and the circumferential end surface of the teeth portion main body. Larger than the dimension between and the insulation Has a wall portion disposed notch.

この発明に係る回転電機によれば、ティース部に形成された切欠き部が、ティース部の軸方向端部に軸方向に突出し径方向に延びる凸部が径方向全域に渡って形成されるように、径方向に延び径方向全域に渡っており、軸方向に視た場合に、凸部の周方向側面と鍔部の周方向端面との間の寸法が、凸部の周方向側面とティース部本体の周方向端面との間の寸法よりも大きいので、ティース部の軸方向端部には鍔部が配置されず、インシュレータの壁部の肉厚を厚くすることができる。これにより、スロット面積が小さくなることを防ぐとともにインシュレータの強度を向上させることができる。   According to the rotating electrical machine according to the present invention, the notch portion formed in the tooth portion is formed such that a protruding portion extending in the axial direction and extending in the radial direction is formed over the entire radial direction at the axial end portion of the tooth portion. In addition, it extends in the radial direction over the entire radial direction, and when viewed in the axial direction, the dimension between the circumferential side surface of the convex portion and the circumferential end surface of the flange portion is the same as the circumferential side surface of the convex portion and the teeth. Since it is larger than the dimension between the peripheral end surfaces of the part main body, the collar part is not arranged at the axial end part of the tooth part, and the wall thickness of the insulator can be increased. Thereby, it is possible to prevent the slot area from becoming small and to improve the strength of the insulator.

この発明の実施の形態１に係る回転電機の要部を示す分解斜視図である。It is a disassembled perspective view which shows the principal part of the rotary electric machine which concerns on Embodiment 1 of this invention. 図１の回転電機の要部を示す側面図である。It is a side view which shows the principal part of the rotary electric machine of FIG. 図２のＩＩＩ−ＩＩＩ線に沿った矢視断面図である。It is arrow sectional drawing along the III-III line of FIG. 図１の固定子鉄心を示す平面図である。It is a top view which shows the stator core of FIG. この発明の実施の形態２に係る回転電機の固定子鉄心の要部を示す平面図である。It is a top view which shows the principal part of the stator core of the rotary electric machine which concerns on Embodiment 2 of this invention. この発明の実施の形態３に係る回転電機の固定子鉄心の要部を示す平面図である。It is a top view which shows the principal part of the stator core of the rotary electric machine which concerns on Embodiment 3 of this invention.

実施の形態１．
図１はこの発明の実施の形態１に係る回転電機の要部を示す分解斜視図、図２は図１の回転電機の要部を示す側面図、図３は図２のＩＩＩ−ＩＩＩ線に沿った矢視断面図である。回転電機は、コアバック部１１およびコアバック部１１から径方向内側に延びたティース部１２を有する固定子鉄心１と、それぞれのティース部１２の軸方向両端部のそれぞれに設けられた絶縁性のインシュレータ２と、それぞれのティース部１２の周方向両側面のそれぞれに設けられた絶縁紙３とを備えている。 Embodiment 1 FIG.
1 is an exploded perspective view showing the main part of the rotating electrical machine according to Embodiment 1 of the present invention, FIG. 2 is a side view showing the main part of the rotating electrical machine of FIG. 1, and FIG. 3 is taken along the line III-III in FIG. FIG. The rotating electrical machine includes a stator core 1 having a core back portion 11 and a tooth portion 12 extending radially inward from the core back portion 11 and insulating properties provided at both axial ends of the respective tooth portions 12. An insulator 2 and insulating paper 3 provided on each side surface of each tooth portion 12 in the circumferential direction are provided.

図１では、１つのコアバック部１１を示しているが、固定子鉄心１は、複数のコアバック部１１を有している。複数のコアバック部１１は、円周上に配置されている。つまり、固定子鉄心１は、複数のコアバック部１１に分割されている。固定子鉄心１は、複数の電磁鋼板を積層することによって構成されている。隣り合う一対のコアバック部１１の間には、スロットが形成される。コアバック部１１の軸方向外側およびスロットには、図示しない巻線が配置される。   Although one core back part 11 is shown in FIG. 1, the stator core 1 has a plurality of core back parts 11. The plurality of core back portions 11 are arranged on the circumference. That is, the stator core 1 is divided into a plurality of core back portions 11. The stator core 1 is configured by laminating a plurality of electromagnetic steel plates. A slot is formed between a pair of adjacent core back portions 11. Windings (not shown) are arranged on the axially outer side and the slots of the core back portion 11.

この例で、軸方向とは、回転軸の軸線方向である。周方向とは、回転軸の軸線を中心とした周方向である。径方向とは、回転軸の軸線についての径方向である。   In this example, the axial direction is the axial direction of the rotating shaft. The circumferential direction is a circumferential direction around the axis of the rotation axis. The radial direction is the radial direction about the axis of the rotation axis.

ティース部１２は、基端部がコアバック部１１に接続され、先端部が径方向内側に延びている。ティース部１２は、ティース部本体１２１と、ティース部本体１２１の先端部に設けられ周方向外側へ延びる一対の鍔部１２２とを含んでいる。ティース部１２の軸方向端部における周方向端部には、径方向に延びた切欠き部１２３が径方向全域に渡って形成されている。切欠き部１２３は、径方向にまっすぐに延びて形成されている。   The teeth portion 12 has a proximal end portion connected to the core back portion 11 and a distal end portion extending radially inward. The teeth portion 12 includes a teeth portion main body 121 and a pair of flange portions 122 provided at the tip of the teeth portion main body 121 and extending outward in the circumferential direction. A notch 123 extending in the radial direction is formed in the circumferential end of the axial end of the tooth portion 12 over the entire radial direction. The notch 123 is formed to extend straight in the radial direction.

切欠き部１２３は、ティース部１２の軸方向両端部に形成されている。また、切欠き部１２３は、ティース部１２の周方向両端部に形成されている。ティース部１２の軸方向端部には、ティース部１２に切欠き部１２３が形成されることによって、軸方向に突出し径方向に延びた凸部１２４がティース部１２の径方向全域に渡って形成されている。凸部１２４は、径方向にまっすぐに延びて形成されている。ティース部１２に切欠き部１２３が形成されることによって、ティース部１２の軸方向端部には、鍔部１２２が配置されない。したがって、鍔部１２２は、ティース部１２の軸方向中間部にのみ配置されている。ティース部１２の軸方向中間部とは、軸方向についてティース部１２における軸方向端部を除いた部分である。凸部１２４は、ティース部本体１２１にのみ形成される。   The notches 123 are formed at both ends of the teeth portion 12 in the axial direction. Moreover, the notch part 123 is formed in the circumferential direction both ends of the teeth part 12. FIG. A notch portion 123 is formed in the tooth portion 12 at the axial end portion of the tooth portion 12 so that a convex portion 124 protruding in the axial direction and extending in the radial direction is formed over the entire radial direction of the tooth portion 12. Has been. The convex portion 124 is formed to extend straight in the radial direction. By forming the notch portion 123 in the tooth portion 12, the flange portion 122 is not disposed at the axial end portion of the tooth portion 12. Therefore, the flange portion 122 is disposed only at the intermediate portion in the axial direction of the tooth portion 12. The intermediate portion in the axial direction of the tooth portion 12 is a portion excluding the axial end portion of the tooth portion 12 in the axial direction. The convex portion 124 is formed only on the tooth portion main body 121.

インシュレータ２は、コアバック部１１に設けられる壁側部２１と、壁側部２１から径方向内側に延びた本体部２２とを有している。インシュレータ２は、樹脂の一体成形によって形成されている。本体部２２には、切欠き部１２３の全域に渡って配置される壁部２２１が形成されている。壁部２２１の径方向内側端部は、軸方向について鍔部１２２と対向するインシュレータ鍔部２２４を有している。インシュレータ鍔部２２４を除いた壁部２２１の部分は、径方向にまっすぐに延びて形成されている。   The insulator 2 includes a wall side portion 21 provided in the core back portion 11 and a main body portion 22 extending radially inward from the wall side portion 21. The insulator 2 is formed by integral molding of resin. A wall portion 221 is formed in the main body portion 22 so as to be disposed over the entire area of the notch portion 123. The radially inner end of the wall 221 has an insulator flange 224 that faces the flange 122 in the axial direction. A portion of the wall portion 221 excluding the insulator flange portion 224 is formed to extend straight in the radial direction.

壁部２２１は、本体部２２の周方向両端部に形成されている。本体部２２の周方向両端部に壁部２２１が形成されることによって、本体部２２には、径方向に延びた凹部２２２が径方向全域に渡って形成されている。凹部２２２は、径方向にまっすぐに延びて形成されている。凸部１２４は、凹部２２２に嵌め合いによって挿入されている。インシュレータ鍔部２２４を除いた壁部２２１の部分における周方向端面は、平面形状に形成されている。   The wall part 221 is formed at both ends in the circumferential direction of the main body part 22. By forming wall portions 221 at both ends in the circumferential direction of the main body portion 22, the main body portion 22 is formed with a concave portion 222 extending in the radial direction over the entire radial direction. The recess 222 is formed to extend straight in the radial direction. The convex part 124 is inserted into the concave part 222 by fitting. A circumferential end surface of the wall portion 221 excluding the insulator flange 224 is formed in a planar shape.

本体部２２におけるティース部１２に対向する面とは反対側の面には、図示しない巻線が挿入される複数の溝２２３が形成されている。溝２２３には、予め設定された回数だけ巻かれた巻線が挿入される。また、本体部２２におけるティース部１２に対向する面とは反対側の面は、巻線が配置されるために湾曲形状に形成されている。   A plurality of grooves 223 into which windings (not shown) are inserted are formed on the surface of the main body portion 22 opposite to the surface facing the teeth portion 12. In the groove 223, a winding wound a preset number of times is inserted. Further, the surface of the main body portion 22 opposite to the surface facing the teeth portion 12 is formed in a curved shape because the winding is disposed.

絶縁紙３は、軸方向に離れて設けられた一対のインシュレータ２に渡って設けられている。絶縁紙３は、コアバック部１１の径方向内側面に対向する外周部３１と、鍔部１２２の径方向外側面に対向する内周部３２と、外周部３１と内周部３２との間に設けられ、ティース部本体１２１の周方向側面に対向する中間部３３とを有している。中間部３３の軸方向端部は、軸方向について予め設定された寸法だけ壁部２２１に重なり合っている。つまり、中間部３３の軸方向端部は、本体部２２における湾曲形状の部分には重なりあっていない。   The insulating paper 3 is provided across a pair of insulators 2 provided apart in the axial direction. The insulating paper 3 includes an outer peripheral portion 31 that faces the radially inner side surface of the core back portion 11, an inner peripheral portion 32 that faces the radially outer surface of the flange portion 122, and between the outer peripheral portion 31 and the inner peripheral portion 32. And an intermediate portion 33 that faces the circumferential side surface of the teeth portion main body 121. An end portion in the axial direction of the intermediate portion 33 overlaps the wall portion 221 by a dimension set in advance in the axial direction. That is, the axial end portion of the intermediate portion 33 does not overlap the curved portion of the main body portion 22.

図４は図１の固定子鉄心１を示す平面図である。固定子鉄心１を軸方向に視た場合に、凸部１２４の周方向側面と鍔部１２２の周方向端面との間の寸法Ａが、凸部１２４の周方向側面とティース部本体１２１の周方向端面との間の寸法よりも大きくなっている。   FIG. 4 is a plan view showing the stator core 1 of FIG. When the stator core 1 is viewed in the axial direction, the dimension A between the circumferential side surface of the convex portion 124 and the circumferential end surface of the flange portion 122 is such that the circumferential side surface of the convex portion 124 and the circumference of the tooth portion main body 121. It is larger than the dimension between the direction end faces.

固定子鉄心１の軸方向端面には、軸方向に窪んだ凹部１３が形成されている。凹部１３は、凸部１２４に形成されている。凹部１３は、ティース部本体１２１におけるコアバック部１１側の端部に配置されている。つまり、凹部１３は、ティース部１２の根元部に配置されている。また、凹部１３は、ティース部１２の周方向両端部のそれぞれに形成されている。一対の凹部１３は、周方向について隣り合うように配置されている。   A concave portion 13 that is recessed in the axial direction is formed on the axial end surface of the stator core 1. The concave portion 13 is formed in the convex portion 124. The recess 13 is disposed at the end of the teeth portion main body 121 on the core back portion 11 side. That is, the concave portion 13 is disposed at the root portion of the tooth portion 12. Moreover, the recessed part 13 is formed in each of the circumferential direction both ends of the teeth part 12. As shown in FIG. A pair of recessed part 13 is arrange | positioned so that it may adjoin about the circumferential direction.

図１に示すように、インシュレータ２には、凹部１３に挿入される図示しない凸部２２５が形成されている。凸部２２５は、本体部２２における壁側部２１側の端部に配置されている。凸部２２５は凹部１３に嵌め合いによって挿入されている。凸部２２５および凹部１３の寸法は、厳しく管理されている。凸部２２５が凹部１３に挿入されることによって、固定子鉄心１に対するインシュレータ２の径方向についての移動が規制される。また、凸部２２５が凹部１３に嵌め合いによって挿入されることによって、インシュレータ２を固定子鉄心１に取り付けた状態で巻線工程が行われる前であって、搬送装置におけるワークによって固定子鉄心１およびインシュレータ２を移動させる際に、固定子鉄心１からインシュレータ２が外れてしまうことが防止される。   As shown in FIG. 1, the insulator 2 is formed with a not-shown convex portion 225 that is inserted into the concave portion 13. The convex portion 225 is disposed at the end of the main body portion 22 on the wall side portion 21 side. The convex portion 225 is inserted into the concave portion 13 by fitting. The dimensions of the convex portion 225 and the concave portion 13 are strictly controlled. By inserting the convex portion 225 into the concave portion 13, the movement of the insulator 2 with respect to the stator core 1 in the radial direction is restricted. Moreover, before the winding process is performed in a state where the insulator 2 is attached to the stator core 1 by inserting the convex portion 225 into the concave portion 13 by fitting, the stator core 1 is moved by a workpiece in the transport device. And, when the insulator 2 is moved, the insulator 2 is prevented from being detached from the stator core 1.

以上説明したように、この発明の実施の形態１に係る回転電機によれば、コアバック部１１およびコアバック部１１から径方向内側に延びたティース部本体１２１とティース部本体１２１の先端部に設けられ周方向外側へ延びる鍔部１２２とを含んだティース部１２を有する固定子鉄心１と、ティース部１２の軸方向端部に設けられた絶縁性のインシュレータ２と、ティース部１２の周方向側面に設けられた絶縁紙３とを備えた回転電機であって、ティース部１２の軸方向端部における周方向端部には、ティース部１２の軸方向端部に軸方向に突出し径方向に延びる凸部１２４が径方向全域に渡って形成されるように、径方向に延びた切欠き部１２３が径方向全域に渡って形成され、軸方向に視た場合に、凸部１２４の周方向側面と鍔部１２２の周方向端面との間の寸法が、凸部１２４の周方向側面とティース部本体１２１の周方向端面との間の寸法よりも大きく、インシュレータ２は、切欠き部１２３に配置される壁部２２１を有しているので、ティース部１２の軸方向端部には鍔部１２２が配置されなくなり、インシュレータ２の壁部２２１の肉厚を厚くすることができる。これにより、スロット面積が小さくなることを防ぐとともにインシュレータ２の強度を向上させることができ、巻線を行う際にインシュレータ２に割れが発生することを抑制することができる。   As described above, according to the rotating electrical machine according to the first embodiment of the present invention, the core back portion 11 and the tooth portion main body 121 extending radially inward from the core back portion 11 and the distal end portion of the tooth portion main body 121 are provided. A stator core 1 having a tooth portion 12 including a flange portion 122 that is provided and extends outward in the circumferential direction, an insulating insulator 2 provided at an axial end portion of the tooth portion 12, and a circumferential direction of the tooth portion 12 A rotating electric machine including an insulating paper 3 provided on a side surface, and a circumferential end portion of the tooth portion 12 in an axial direction protrudes in an axial direction from an axial end portion of the tooth portion 12 in a radial direction. The notch 123 extending in the radial direction is formed over the entire radial direction so that the extending convex portion 124 is formed over the entire radial direction, and when viewed in the axial direction, the circumferential direction of the convex portion 124 Side and buttocks 12 Is larger than the dimension between the circumferential side surface of the convex portion 124 and the circumferential end surface of the tooth portion main body 121, and the insulator 2 is a wall portion disposed in the notch portion 123. Since it has 221, the flange 122 is not disposed at the axial end of the tooth portion 12, and the wall portion 221 of the insulator 2 can be thickened. As a result, it is possible to prevent the slot area from becoming small and to improve the strength of the insulator 2 and to suppress the occurrence of cracks in the insulator 2 when performing winding.

また、固定子鉄心１の軸方向端面には、軸方向に窪んだ凹部１３が形成されており、インシュレータ２には、凹部１３に挿入されることによって固定子鉄心１に対するインシュレータ２の径方向についての移動が規制される凸部２２５が形成されているので、巻線工程の際に、インシュレータ２が固定子鉄心１に対して移動することが防止され、巻線工程の作業性を向上させることができ、また、回転電機の生産性を向上させることができる。   Moreover, the axial direction end surface of the stator core 1 is formed with a concave portion 13 that is recessed in the axial direction. The insulator 2 is inserted into the concave portion 13 so that the insulator 2 is in the radial direction with respect to the stator core 1. Since the protrusion 225 is restricted from moving, the insulator 2 is prevented from moving relative to the stator core 1 during the winding process, and the workability of the winding process is improved. In addition, the productivity of the rotating electrical machine can be improved.

また、凹部１３は、ティース部１２の根元部に配置されているので、巻線工程における巻線の開始位置がティース部１２の根元部である場合に、巻線開始位置と固定子鉄心１およびインシュレータ２の嵌合部の位置とを一致させることができ、巻線の開始時にインシュレータ２が固定子鉄心１に対してがたつくことを抑制し、安定して巻線を行うことができる。   Moreover, since the recessed part 13 is arrange | positioned at the root part of the teeth part 12, when the starting position of the winding in a winding process is a root part of the teeth part 12, the winding start position and the stator core 1 and The position of the fitting portion of the insulator 2 can be matched, and the insulator 2 can be prevented from rattling with respect to the stator core 1 at the start of the winding, so that the winding can be performed stably.

また、壁部２２１における周方向端面は、平面形状に形成されており、絶縁紙３の軸方向端部は、壁部２２１に重なり合っているので、絶縁紙３がインシュレータ２の本体部２２における湾曲形状の部分には重なり合わない。絶縁紙３がインシュレータ２の本体部２２における湾曲形状の部分に重なり合うと、巻線時に絶縁紙３が邪魔となり巻線を行うことが難しくなるが、絶縁紙３がインシュレータ２の本体部２２における湾曲形状の部分には重なり合わないので、巻線を容易に行うことができる。   Further, the circumferential end surface of the wall portion 221 is formed in a planar shape, and the axial end portion of the insulating paper 3 overlaps the wall portion 221, so that the insulating paper 3 is curved in the main body portion 22 of the insulator 2. It does not overlap the shape part. If the insulating paper 3 overlaps the curved portion of the main body portion 22 of the insulator 2, the insulating paper 3 becomes an obstacle during winding and it is difficult to perform the winding, but the insulating paper 3 is bent in the main body portion 22 of the insulator 2. Since it does not overlap with the shape part, winding can be performed easily.

実施の形態２．
図５はこの発明の実施の形態２に係る回転電機の固定子鉄心の要部を示す平面図である。固定子鉄心１の軸方向端面には、軸方向に窪んだ凹部１４が形成されている。凹部１４は、凸部１２４に形成されている。凹部１４は、ティース部１２の周方向両端部のそれぞれに形成されている。一対の凹部１４は、径方向について互いにずれて配置されている。一対の凹部１４は、左右非対称となっている。つまり、一対の凹部１４は、実施の形態１と異なり、周方向について隣り合っていない。凹部１４に嵌め合いによって挿入されるインシュレータ２の凸部は、固定子鉄心１の凹部１４の位置に対応して配置されている。その他の構成は、実施の形態１と同様である。 Embodiment 2. FIG.
FIG. 5 is a plan view showing a main part of a stator core of a rotating electrical machine according to Embodiment 2 of the present invention. A concave portion 14 that is recessed in the axial direction is formed on the axial end surface of the stator core 1. The concave portion 14 is formed in the convex portion 124. The recessed part 14 is formed in each of the circumferential direction both ends of the teeth part 12. FIG. The pair of recesses 14 are arranged so as to be shifted from each other in the radial direction. The pair of recesses 14 are asymmetrical. That is, unlike the first embodiment, the pair of recesses 14 are not adjacent to each other in the circumferential direction. The convex portion of the insulator 2 inserted by fitting into the concave portion 14 is arranged corresponding to the position of the concave portion 14 of the stator core 1. Other configurations are the same as those in the first embodiment.

以上説明したように、この発明の実施の形態２に係る回転電機によれば、一対の凹部１４は、ティース部１２に配置され、径方向について互いにずれて配置されているので、凹部１４を形成することによって生じるティース部１２における磁気通路の縮小を低減させることができ、回転電機の性能低下を抑制することができる。   As described above, according to the rotating electrical machine according to the second embodiment of the present invention, the pair of recesses 14 are disposed in the tooth portion 12 and are shifted from each other in the radial direction, so that the recess 14 is formed. This can reduce the reduction of the magnetic path in the tooth portion 12 and can suppress the performance deterioration of the rotating electrical machine.

実施の形態３．
図６はこの発明の実施の形態３に係る回転電機の固定子鉄心の要部を示す平面図である。固定子鉄心１の軸方向端面には、軸方向に窪んだ複数の凹部１５が形成されている。凹部１５は、コアバック部１１に形成されている。複数の凹部１５は、周方向に離れて配置されている。凹部１５に嵌め合いによって挿入されるインシュレータ２の凸部は、固定子鉄心１の凹部１５の位置に対応して配置されている。その他の構成は、実施の形態１と同様である。 Embodiment 3 FIG.
6 is a plan view showing a main part of a stator core of a rotating electrical machine according to Embodiment 3 of the present invention. A plurality of recesses 15 that are recessed in the axial direction are formed on the axial end surface of the stator core 1. The recess 15 is formed in the core back portion 11. The several recessed part 15 is arrange | positioned away in the circumferential direction. The convex portion of the insulator 2 inserted by fitting into the concave portion 15 is arranged corresponding to the position of the concave portion 15 of the stator core 1. Other configurations are the same as those in the first embodiment.

以上説明したように、この発明の実施の形態３に係る回転電機によれば、凹部１５は、コアバック部１１に配置されているので、コアバック部１１の寸法が大きい場合には、磁気通路の縮小を低減させることができ、回転電機の性能低下を抑制することができる。   As described above, according to the rotating electric machine according to the third embodiment of the present invention, since the recess 15 is arranged in the core back part 11, when the dimension of the core back part 11 is large, the magnetic path Can be reduced, and a reduction in performance of the rotating electrical machine can be suppressed.

なお、各上記実施の形態では、絶縁シートとして、絶縁紙３を例に説明したが、紙に限らず、その他の材料から構成されてもよい。   In each of the above-described embodiments, the insulating paper 3 has been described as an example of the insulating sheet.

１ 固定子鉄心、２ インシュレータ、３ 絶縁紙、１１ コアバック部、１２ ティース部、１３ 凹部、１４ 凹部、１５ 凹部、２１ 壁側部、２２ 本体部、３１ 外周部、３２ 内周部、３３ 中間部、１２１ ティース部本体、１２２ 鍔部、１２３ 切欠き部、１２４ 凸部、２２１ 壁部、２２２ 凹部、２２３ 溝、２２４ インシュレータ鍔部、２２５ 凸部。   DESCRIPTION OF SYMBOLS 1 Stator core, 2 Insulator, 3 Insulating paper, 11 Core back part, 12 Teeth part, 13 Recessed part, 14 Recessed part, 15 Recessed part, 21 Wall side part, 22 Main body part, 31 Outer peripheral part, 32 Inner peripheral part, 33 Middle Part, 121 teeth part main body, 122 collar part, 123 notch part, 124 convex part, 221 wall part, 222 concave part, 223 groove, 224 insulator collar part, 225 convex part.

Claims (6)

コアバック部および前記コアバック部から径方向内側に延びたティース部本体と前記ティース部本体の先端部に設けられ周方向外側へ延びる鍔部とを含んだティース部を有する固定子鉄心と、
前記ティース部の軸方向端部に設けられた絶縁性のインシュレータと、
前記ティース部の周方向側面に設けられた絶縁シートと
を備えた回転電機であって、
前記ティース部の軸方向端部における周方向端部には、前記ティース部の軸方向端部に軸方向に突出し径方向に延びる凸部が径方向全域に渡って形成されるように、径方向に延びた切欠き部が径方向全域に渡って形成され、
軸方向に視た場合に、前記凸部の周方向側面と前記鍔部の周方向端面との間の寸法が、前記凸部の周方向側面と前記ティース部本体の周方向端面との間の寸法よりも大きく、
前記インシュレータは、前記切欠き部に配置される壁部を有している回転電機。 A stator core having a teeth portion including a core back portion and a teeth portion main body extending radially inward from the core back portion and a flange portion provided at a distal end portion of the teeth portion main body and extending outward in the circumferential direction;
An insulating insulator provided at an axial end of the teeth portion;
A rotating electric machine comprising: an insulating sheet provided on a circumferential side surface of the tooth portion;
The circumferential end of the tooth portion in the axial direction is radially formed such that a convex portion extending in the axial direction and extending in the radial direction is formed over the entire radial direction at the axial end of the teeth portion. A notch that extends to is formed over the entire radial direction,
When viewed in the axial direction, the dimension between the circumferential side surface of the convex portion and the circumferential end surface of the flange portion is between the circumferential side surface of the convex portion and the circumferential end surface of the teeth portion main body. Larger than the dimensions,
The insulator is a rotating electrical machine having a wall portion disposed in the notch. 前記固定子鉄心の軸方向端面には、軸方向に窪んだ凹部が形成されており、
前記インシュレータには、前記凹部に挿入されることによって前記固定子鉄心に対する前記インシュレータの径方向についての移動が規制される凸部が形成されている請求項１に記載の回転電機。 On the axial end surface of the stator core, a concave portion recessed in the axial direction is formed,
2. The rotating electrical machine according to claim 1, wherein the insulator is formed with a convex portion that is inserted into the concave portion and is restricted from moving in a radial direction of the insulator with respect to the stator core. 前記凹部は、前記ティース部の根元部に配置されている請求項２に記載の回転電機。   The rotating electrical machine according to claim 2, wherein the concave portion is disposed at a root portion of the teeth portion. 一対の前記凹部は、前記ティース部に配置され、径方向について互いにずれて配置されている請求項２に記載の回転電機。   The rotating electrical machine according to claim 2, wherein the pair of recesses are disposed in the teeth portion and are shifted from each other in the radial direction. 前記凹部は、前記コアバック部に配置されている請求項２に記載の回転電機。   The rotating electrical machine according to claim 2, wherein the concave portion is disposed in the core back portion. 前記壁部における周方向端面は、平面形状に形成されており、
前記絶縁シートの軸方向端部は、前記壁部に重なり合っている請求項１から請求項５までの何れか一項に記載の回転電機。 The circumferential end surface of the wall is formed in a planar shape,
The rotating electrical machine according to any one of claims 1 to 5, wherein an axial end portion of the insulating sheet overlaps the wall portion.
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