JP2017099211A - Method of manufacturing stator for rotary electric machine - Google Patents

Method of manufacturing stator for rotary electric machine Download PDF

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JP2017099211A
JP2017099211A JP2015231596A JP2015231596A JP2017099211A JP 2017099211 A JP2017099211 A JP 2017099211A JP 2015231596 A JP2015231596 A JP 2015231596A JP 2015231596 A JP2015231596 A JP 2015231596A JP 2017099211 A JP2017099211 A JP 2017099211A
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fixing member
segment
outer peripheral
stator core
inner peripheral
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竹原 明秀
Akihide Takehara
明秀 竹原
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Toyota Motor Corp
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Toyota Motor Corp
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Abstract

PROBLEM TO BE SOLVED: To simply perform transportation of a fixing member in a method for manufacturing a stator for which divided fixing members are used.SOLUTION: Fixing member segments 34 are aligned in the circumferential direction and annually arranged. The fixing member segments 34 annually arranged are grasped so as to surround an outer peripheral ring 30 by a radial clamp 48, one place of the outer peripheral ring 30 is sandwiched and grasped by an axial clamp 50 in the axial direction, and the annually arranged fixing member segments 34 are held in an integrated state. By a shape of joint parts of the fixing member segments 34 adjacent to each other, force is supplied/received between these fixing member segments 34, and the integrated state is maintained. In a state where the fixing member segments 34 are integrated, transportation to the end surface of a stator core is made possible.SELECTED DRAWING: Figure 6

Description

本発明は、回転電機のステータの製造方法に関する。   The present invention relates to a method for manufacturing a stator of a rotating electrical machine.

回転電機のステータコアは全体として円環または円筒形状を有する。より詳しくは、円環または円筒形状のヨーク部と、ヨーク部の内周から内側に延び、かつ周方向に配列される複数のティースを有する。隣接するティースの間の空間はスロットと呼ばれる。スロットを通してコイル導線がティースに巻き渡されコイルが形成されている。ステータコアの円環または円筒の中心軸線方向における端面と、コイルエンドの間には隙間が存在する。この隙間があると、コイルの位置がステータコアに対して安定しない場合がある。   The stator core of a rotating electrical machine has an annular or cylindrical shape as a whole. More specifically, it has an annular or cylindrical yoke portion and a plurality of teeth extending inward from the inner periphery of the yoke portion and arranged in the circumferential direction. The space between adjacent teeth is called a slot. Coil conductors are wound around the teeth through the slots to form coils. There is a gap between the end surface of the stator core ring or cylinder in the central axis direction and the coil end. If there is this gap, the position of the coil may not be stable with respect to the stator core.

下記特許文献1においては、ステータコアの端面とコイルエンドの間の隙間に樹脂製の固定部材(部品カフサ200)を配置し、コイルの動きを抑制し、安定的に固定する技術が開示されている。この固定部材は、配列されたティースが設けられた部分に対応する円環板形状を有し、そしてスロットに対応する部分にスリット(カフサスロット210)が設けられている。   In the following Patent Document 1, a technique is disclosed in which a resin-made fixing member (component cuffer 200) is disposed in a gap between an end surface of a stator core and a coil end, and the movement of the coil is suppressed and stably fixed. . The fixing member has an annular plate shape corresponding to a portion where the arranged teeth are provided, and a slit (cuffer slot 210) is provided in a portion corresponding to the slot.

特開2014−135865号公報JP 2014-135865 A

上記特許文献1の固定部材は、円環板の直径に対して厚さが薄く、またスリットが設けられているため、射出成形等により樹脂を成形する際にゆがみやすい。ゆがみが生じたまま使用すると、場所によってステータコアの端面との間に隙間が生じ、コイルを巻き付ける際にコイルから力を受け、破損する場合があった。成形時のゆがみを防止するために、固定部材を分割された複数の部分から構成することで、ステータコア端面との隙間の発生を抑制することが考えられる。しかし、複数に分割された部品を個々にステータコア端面に搬送するのは手間がかかる。   Since the fixing member of Patent Document 1 is thin with respect to the diameter of the annular plate and is provided with a slit, it is easily distorted when the resin is molded by injection molding or the like. When used with distortion, a gap may be formed between the stator core and the end face of the stator core depending on the location. When the coil is wound, it may be damaged by receiving a force from the coil. In order to prevent the distortion at the time of shaping | molding, it is possible to suppress generation | occurrence | production of the clearance gap with a stator core end surface by comprising a fixing member from the several part divided | segmented. However, it is troublesome to individually convey the divided parts to the end face of the stator core.

本発明は、分割された固定部材を使用するステータを製造する方法において、固定部材の搬送を簡易にする方法を提供することを目的とする。   It is an object of the present invention to provide a method for simplifying the conveyance of a fixing member in a method of manufacturing a stator using divided fixing members.

本発明に係る回転電機のステータの製造方法は、周方向に並べられて円環形状の固定部材を形成する樹脂製の固定部材セグメントを形成するセグメント形成ステップと、固定部材セグメントを周方向に並べ、環状に配置するセグメント配置ステップと、環状に配置された固定部材セグメントを径方向クランプと軸線方向クランプで把持し、環状に配置された固定部材セグメントを一体にした状態で、ステータコアの軸線方向の端面へと搬送するセグメント搬送ステップと、ステータコアのスロットにコイル導線を通し、固定部材に沿ってコイル導線を曲げて成形するコイル導線成形ステップとを有する。   A method of manufacturing a stator for a rotating electrical machine according to the present invention includes a segment forming step for forming a resin-made fixing member segment that is arranged in the circumferential direction to form an annular fixing member, and the fixing member segments are arranged in the circumferential direction. An annularly arranged segment arranging step, an annularly arranged fixing member segment is gripped by a radial clamp and an axial clamp, and the annularly arranged fixing member segment is integrated in the axial direction of the stator core. A segment conveying step for conveying to the end face; and a coil conductor forming step for forming the coil conductor by bending the coil conductor along the fixing member through the coil conductor through the slot of the stator core.

固定部材は、ステータコアの各ティースの端面に対応して位置する枕部と、枕部の径方向外端をつないで延びている外周環と、枕部の径方向内端をつないで延びている内周環と、を有する。また、周方向に並べられたとき隣接している固定部材セグメント同士の外周側接合部および内周側接合部には、それぞれステータコアの軸線方向において力の授受が可能な軸線方向係合構造と、ステータコアの径方向において力の授受が可能な径方向係合構造とが形成されている。   The fixing member extends by connecting the pillow portion positioned corresponding to the end surface of each tooth of the stator core, the outer peripheral ring extending by connecting the radially outer end of the pillow portion, and the radially inner end of the pillow portion. An inner ring. In addition, an axial engagement structure capable of transmitting and receiving force in the axial direction of the stator core, respectively, on the outer peripheral side joint and the inner peripheral side joint between adjacent fixing member segments when arranged in the circumferential direction; A radial engagement structure capable of transmitting and receiving force in the radial direction of the stator core is formed.

セグメント搬送ステップにおいて、径方向クランプによって固定部材の外周環を囲うようにして固定部材を保持し、また軸線方向クランプによって固定部材の外周環の1箇所を軸線方向において挟んで固定部材を保持する。このとき、外周側接合部および内周側接合部の軸線方向係合構造により、各固定部材セグメントは、当該固定部材セグメントの第1の側に隣接する固定部材セグメントを下から支え、当該固定部材セグメントの第2の側に隣接する固定部材セグメントに下から支えられ、さらに外周側接合部および内周側接合部の径方向係合構造により、各固定部材セグメントは、当該固定部材セグメントの第1の側に隣接する固定部材セグメントを径方向内側に押し、当該固定部材セグメントの第2の側に隣接する固定部材セグメントを径方向内側から受ける。   In the segment conveying step, the fixing member is held so as to surround the outer peripheral ring of the fixing member by the radial clamp, and the fixing member is held by sandwiching one portion of the outer peripheral ring of the fixing member in the axial direction by the axial clamp. At this time, each fixing member segment supports the fixing member segment adjacent to the first side of the fixing member segment from below by the axial engagement structure of the outer peripheral side joining portion and the inner peripheral side joining portion. Each fixing member segment is supported by a fixing member segment adjacent to the second side of the segment from below, and further, due to the radial engagement structure of the outer peripheral side joint portion and the inner peripheral side joint portion, The fixing member segment adjacent to this side is pushed inward in the radial direction, and the fixing member segment adjacent to the second side of the fixing member segment is received from the inside in the radial direction.

コイル導線成形ステップにおいて、コイル導線は固定部材の枕部に沿って曲げて成形される。   In the coil conductor forming step, the coil conductor is bent and formed along the pillow portion of the fixing member.

軸線方向係合構造および径方向係合構造により、配列状態の固定部材セグメントを一体にした状態でステータコアの端面へと搬送することができ、複数の部品から構成される固定部材の搬送を簡易に行うことができる。   With the axial engagement structure and the radial engagement structure, the fixed member segments in an arrayed state can be transported to the end face of the stator core, and the transport of the fixed member composed of a plurality of parts can be easily performed. It can be carried out.

コイルを一部省略した状態でステータを示す図である。It is a figure which shows a stator in the state which a part of coil was abbreviate | omitted. 固定部材を示す図である。It is a figure which shows a fixing member. 固定部材セグメントを分離した状態で固定部材を示す図である。It is a figure which shows a fixing member in the state which isolate | separated the fixing member segment. 固定部材セグメントを示す図である。It is a figure which shows a fixing member segment. 固定部材を内周側から視た状態を示す図である。It is a figure which shows the state which looked at the fixing member from the inner peripheral side. 固定部材を保持する保持具を示す図である。It is a figure which shows the holding tool holding a fixing member.

以下、本発明の実施形態を図面に従って説明する。図1は、回転電機のステータ10の概略構成を示す斜視図である。ステータ10は、概略円環形状を有している。この円環の中心軸線を以下「軸線」と記し、この軸線に沿う方向を「軸線方向」と記し、軸線を中心として周回する方向を周方向と記す。また、この軸線に直交する方向を「径方向」と記し、この径方向において軸線から遠い側を「外」、近い側を「内」と記す。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a schematic configuration of a stator 10 of a rotating electrical machine. The stator 10 has a substantially annular shape. The center axis of this ring is hereinafter referred to as “axis”, the direction along this axis is referred to as “axis direction”, and the direction of circling around the axis is referred to as “circumferential direction”. A direction perpendicular to the axis is referred to as a “radial direction”, a side far from the axis in the radial direction is referred to as “outside”, and a side near the axis is referred to as “inside”.

ステータ10は、全体として円環形状のステータコア12と、ステータコア12に巻装されたコイル14を含む。コイル14は、全周にわたって巻装されているが、図1においては、ステータ10の形態を良く示すためにコイル14の一部のみ示している。ステータコア12は、略円環形状のヨーク部16と、ヨーク部16の内周面から径方向内側に延びるティース18を有する。ティース18は周方向に、互いに間隔をあけて配列されている。隣接するティース18同士の間の空間はスロット20と呼ばれ、このスロット20をコイル導線22が軸線方向に通る。図1において、ステータコア12の下側において、スロット20を出たコイル導線22は周方向に延び、そして別のスロット20に入る。ステータコア12の上側においては、他のスロット20から出たコイル導線22と溶接される。これによって、ティース18に巻回されたコイル14が形成される。コイル導線22は、断面が長方形の導線、つまり平角導線とすることができる。コイル導線22のスロット20から出た部分で形成されるコイルの部分はコイルエンド24と呼ばれる。コイルエンド24は、ステータコア12の軸線方向における端面に隣接して位置する。   The stator 10 includes an annular stator core 12 as a whole and a coil 14 wound around the stator core 12. Although the coil 14 is wound over the entire circumference, only a part of the coil 14 is shown in FIG. 1 in order to better illustrate the form of the stator 10. The stator core 12 includes a substantially annular yoke portion 16 and teeth 18 extending radially inward from the inner peripheral surface of the yoke portion 16. The teeth 18 are arranged at intervals in the circumferential direction. A space between adjacent teeth 18 is called a slot 20, and the coil conductor 22 passes through the slot 20 in the axial direction. In FIG. 1, on the lower side of the stator core 12, the coil conductor 22 exiting the slot 20 extends in the circumferential direction and enters another slot 20. On the upper side of the stator core 12, it is welded to the coil conductor 22 coming out from the other slot 20. Thereby, the coil 14 wound around the teeth 18 is formed. The coil conductor 22 may be a conductor having a rectangular cross section, that is, a flat conductor. The portion of the coil formed by the portion of the coil conductor 22 that exits from the slot 20 is called the coil end 24. The coil end 24 is positioned adjacent to the end surface in the axial direction of the stator core 12.

スロット20を出たコイル導線22は急に屈曲することはできないので、ステータコア12の端面とコイルエンド24の間に隙間が生じる。この隙間があるとコイル14がステータコア12に対して安定しない。また、コイル導線22のスロット20から出た部分を曲げる際、スロット20の開口の縁、すなわちティース18の角にコイル導線22が当たる可能性がある。これらを防止するために固定部材26が用いられている。固定部材26は、ステータコア12の端面のうち、主にティース18とスロット20に対応する円環部分に配置される。   Since the coil conductor wire 22 exiting the slot 20 cannot be bent suddenly, a gap is formed between the end face of the stator core 12 and the coil end 24. If this gap exists, the coil 14 is not stable with respect to the stator core 12. In addition, when the portion of the coil conductor 22 that exits from the slot 20 is bent, the coil conductor 22 may hit the edge of the opening of the slot 20, that is, the corner of the tooth 18. In order to prevent these, the fixing member 26 is used. The fixing member 26 is disposed on an annular portion of the end face of the stator core 12 that mainly corresponds to the teeth 18 and the slots 20.

図2は、固定部材26のみを表す図であり、上下の向きは図1と同じである。固定部材26は、ティース18の軸線方向における端面に対応して設けられる複数の枕部28と、枕部28の外側の端をつないで延びる外周環30と、枕部28の内側の端をつないで延びる内周環32を含む。枕部28は、互いに間隔をあけて周方向に配列されている。枕部28同士の隙間は、ステータコア12のスロット20に対応し、スロット20から延びるコイル導線22はこの隙間を通過する。枕部28のステータコア12とは反対側の面(図2において上側の面)の縁には、面取、または曲面が形成されており、コイル導線22との局所的な接触が起こらないようにしている。   FIG. 2 is a view showing only the fixing member 26, and the vertical direction is the same as FIG. The fixing member 26 connects the plurality of pillow portions 28 provided corresponding to the end surfaces in the axial direction of the teeth 18, the outer peripheral ring 30 that extends by connecting the outer ends of the pillow portions 28, and the inner ends of the pillow portions 28. Including an inner circumferential ring 32 extending at The pillow portions 28 are arranged in the circumferential direction at intervals. The gap between the pillow portions 28 corresponds to the slot 20 of the stator core 12, and the coil conductor 22 extending from the slot 20 passes through this gap. A chamfered or curved surface is formed on the edge of the surface of the pillow portion 28 opposite to the stator core 12 (the upper surface in FIG. 2) so that local contact with the coil conductor 22 does not occur. ing.

固定部材26は、図3に示すように、複数の部分に分割されており、個々の分割された部品を固定部材セグメント34と記す。この固定部材26は、枕部28の個数に分割され、48個の同一形状の固定部材セグメント34からなる。2個またはそれ以上の枕部28に対応して固定部材セグメントを構成してもよく、この場合、固定部材セグメントは外周環と内周環をそれぞれ形成する2本の円弧状の部材と、これらの円弧状の部材を橋渡しする複数の枕部からなるはしご形状となる。   As shown in FIG. 3, the fixing member 26 is divided into a plurality of parts, and each divided part is referred to as a fixing member segment 34. The fixing member 26 is divided into the number of the pillow portions 28 and includes 48 fixing member segments 34 having the same shape. The fixing member segment may be configured to correspond to two or more pillow portions 28. In this case, the fixing member segment includes two arc-shaped members that respectively form an outer peripheral ring and an inner peripheral ring, and these It becomes the ladder shape which consists of a plurality of pillow parts which bridge the arc-shaped member.

図4は、固定部材セグメント34を示す図であり、(a)は1個の固定部材セグメント34を示し、(b)は3個の固定部材セグメント34を並べた状態を示す。個々の固定部材セグメント34を区別する必要がある場合には、3個のうち、真ん中の固定部材セグメントを符号34に「A」を付加して「34A」で表し、隣接する固定部材セグメントを符号34にB,Cを付加して「34B」「34C」で表す。また、各固定部材セグメント34A,34B,34Cに属する要素についても属する固定部材セグメントと同じ文字(A,B,C)を付して区別する。   4A and 4B are diagrams showing the fixing member segment 34, where FIG. 4A shows one fixing member segment 34, and FIG. 4B shows a state in which three fixing member segments 34 are arranged. When it is necessary to distinguish the individual fixing member segments 34, among the three, the fixing member segment in the middle is indicated by “34 A” by adding “A” to the reference numeral 34, and the adjacent fixing member segments are indicated by the reference numerals. B and C are added to 34 and represented by “34B” and “34C”. Further, the elements belonging to the respective fixing member segments 34A, 34B, and 34C are also distinguished by attaching the same letters (A, B, and C) as the belonging fixing member segments.

固定部材セグメント34は、枕部28と、枕部28の外側端に設けられる外周腕部36と、枕部28の内側端に設けられる内周腕部38を含む。外周腕部36は、枕部28から、図2において上方から見たとき時計回りの向きに周方向に延びている。個々の固定部材セグメント34の外周腕部36が連なることにより外周環30が形成される。内周腕部38は、枕部28から、反時計回りの向きに周方向に延びている。個々の固定部材セグメント34の内周腕部38が連なることにより内周環32が形成される。外周腕部36と内周腕部38の延びる向きは、上記の向きと反対、つまり外周腕部36が反時計回りの向きに、内周腕部38が時計回りの向きに延びてもよい。また、外周腕部36、内周腕部38共に時計回り反時計回り双方に延び、固定部材セグメント34の外形がI字形となるようにしてもよい。なお、以降の説明においても、「時計回り」および「反時計回り」は、図2において上方から見た時の向きをいう。   The fixing member segment 34 includes a pillow part 28, an outer peripheral arm part 36 provided at the outer end of the pillow part 28, and an inner peripheral arm part 38 provided at the inner end of the pillow part 28. The outer peripheral arm portion 36 extends in the circumferential direction from the pillow portion 28 in the clockwise direction when viewed from above in FIG. An outer peripheral ring 30 is formed by connecting the outer peripheral arm portions 36 of the individual fixing member segments 34. The inner peripheral arm portion 38 extends in the circumferential direction from the pillow portion 28 in the counterclockwise direction. The inner peripheral ring 32 is formed by connecting the inner peripheral arm portions 38 of the individual fixing member segments 34. The extending direction of the outer peripheral arm portion 36 and the inner peripheral arm portion 38 may be opposite to the above-described direction, that is, the outer peripheral arm portion 36 may extend in the counterclockwise direction, and the inner peripheral arm portion 38 may extend in the clockwise direction. Further, both the outer peripheral arm portion 36 and the inner peripheral arm portion 38 may extend in both the clockwise and counterclockwise directions, and the outer shape of the fixing member segment 34 may be an I-shape. In the following description, “clockwise” and “counterclockwise” refer to directions when viewed from above in FIG.

時計回りの向きに延びる外周腕部36先端部(以下、外周腕先端部40と記す。)には段差が形成され、この段差において下側の段40aがより突出している。外周腕先端部40とは反対側の端である基端部(以下、外周腕基端部42と記す。)にも段差が形成され、上側の段42aがより突出している。なお、「上」「下」は、図2における向きに従い定めており、以降の説明についても同様である。   A step is formed at the distal end portion of the outer peripheral arm portion 36 (hereinafter referred to as the outer peripheral arm distal end portion 40) extending in the clockwise direction, and the lower step 40a further protrudes at the step. A step is also formed in a base end portion (hereinafter referred to as an outer peripheral arm base end portion 42) that is an end opposite to the outer peripheral arm tip portion 40, and the upper step 42a further protrudes. Note that “upper” and “lower” are determined according to the orientation in FIG. 2, and the same applies to the following description.

隣接する外周腕部36同士は、これらの外周腕先端部40と外周腕基端部42のそれぞれの段差が相補うように係合して、一定の厚さ(上下方向の寸法)の外周環30が構成される。また、外周環30の径方向の寸法も一定である。外周腕先端部40の上に向いた面と外周腕基端部42の下に向いた面は軸線方向に対して直交している。また、外周腕先端部40および外周腕基端部42の周方向に向いた面は、周方向に対して直交している。固定部材セグメント34Aの外周腕先端部40Aの段差は、固定部材セグメント34Bの外周腕基端部42Bの段差と係合し、これを下から支える形状となっている。固定部材セグメント34Aの外周腕基端部42Aの段差は、固定部材セグメント34Cの外周腕先端部40Cの段差に下から支えられる形状となっている。外周腕先端部40と外周腕基端部42は、固定部材セグメント34同士の外周側における接合部の要素であり、軸線方向において力の授受が可能な軸線方向係合構造を形成する。   The adjacent outer peripheral arm portions 36 are engaged with each other so that the respective steps of the outer peripheral arm distal end portion 40 and the outer peripheral arm proximal end portion 42 are complementary to each other, and an outer peripheral ring having a certain thickness (vertical dimension). 30 is configured. Moreover, the dimension of the radial direction of the outer periphery ring 30 is also constant. The surface facing upward of the outer peripheral arm distal end portion 40 and the surface facing downward of the outer peripheral arm proximal end portion 42 are orthogonal to the axial direction. Further, the surfaces of the outer peripheral arm distal end portion 40 and the outer peripheral arm proximal end portion 42 facing in the circumferential direction are orthogonal to the circumferential direction. The step of the outer peripheral arm distal end portion 40A of the fixing member segment 34A engages with the step of the outer peripheral arm base end portion 42B of the fixing member segment 34B, and is shaped to support this from below. The step of the outer peripheral arm base end portion 42A of the fixing member segment 34A is shaped to be supported from below by the step of the outer peripheral arm distal end portion 40C of the fixing member segment 34C. The outer peripheral arm distal end portion 40 and the outer peripheral arm proximal end portion 42 are elements of the joint portion on the outer peripheral side of the fixing member segments 34, and form an axial engagement structure capable of transmitting and receiving force in the axial direction.

固定部材セグメント34の外周腕基端部42においては、前述の段差が形成されることにより、枕部28の外周側の端面の一部が露出している。露出した端面28aと、これに対向する外周腕先端部40の面は、径方向に対して直交している。この露出した端面28aに、隣接する固定部材セグメント34の外周腕先端部40の下側の段40aが径方向外側から当接することができる。固定部材セグメント34Aの外周腕先端部40Aは、隣接する固定部材セグメント34Bの枕部28Bの外周側端面に径方向外側から当接しており、固定部材セグメント34Bを内側へ押すことができる。固定部材セグメント34Aの枕部28Aの外周側端面は、隣接する固定部材セグメント34Cの外周腕先端部40Cを径方向内側から受けることができる。外周腕先端部40および外周腕基端部42と、枕部28の外周側の露出した端面28aとは、固定部材セグメント同士の外周側における接合部の要素であり、径方向において力の授受が可能な径方向係合構造を形成する。この固定部材セグメント34では、枕部28の露出した端面28aを利用して径方向における力の授受が可能な構造を形成しているが、外周腕先端部40と外周腕基端部42のそれぞれに、これらを周方向に沿う方向からみたときに段差となる構造を設け、径方向の力の授受を可能とすることもできる。   In the outer peripheral arm base end portion 42 of the fixing member segment 34, a part of the end surface on the outer peripheral side of the pillow portion 28 is exposed by forming the above-described step. The exposed end surface 28a and the surface of the outer peripheral arm tip 40 facing the end surface 28a are orthogonal to the radial direction. A lower step 40a of the outer peripheral arm tip portion 40 of the adjacent fixing member segment 34 can abut on the exposed end surface 28a from the outside in the radial direction. The outer peripheral arm tip portion 40A of the fixing member segment 34A is in contact with the outer peripheral side end surface of the pillow portion 28B of the adjacent fixing member segment 34B from the outside in the radial direction, and can push the fixing member segment 34B inward. The outer peripheral side end face of the pillow portion 28A of the fixing member segment 34A can receive the outer peripheral arm distal end portion 40C of the adjacent fixing member segment 34C from the radially inner side. The outer peripheral arm distal end portion 40 and the outer peripheral arm proximal end portion 42 and the exposed end surface 28a on the outer peripheral side of the pillow portion 28 are elements of the joint portion on the outer peripheral side of the fixing member segments, and force is exchanged in the radial direction. A possible radial engagement structure is formed. In this fixing member segment 34, a structure is formed that can transmit and receive force in the radial direction using the exposed end surface 28 a of the pillow portion 28, and each of the outer peripheral arm distal end portion 40 and the outer peripheral arm proximal end portion 42. Further, it is possible to provide a structure that becomes a step when viewed from the direction along the circumferential direction, and to exchange the force in the radial direction.

反時計回りの向きに延びる内周腕部38の基端部(以下、内周腕基端部44と記す。)には段差が形成され、この段差において下側の段44a(図3,5参照)がより突出している。内周腕基端部44とは反対側の先端部(以下、内周腕先端部46と記す。)にも段差が形成され、上側の段46aがより突出している。内周腕部38の端部の構造は、外周腕部36の端部の構造と同様、段差と枕部28の端面により軸線方向および径方向に力の授受を可能とする構造である。   A step is formed in the base end portion of the inner peripheral arm portion 38 (hereinafter referred to as the inner peripheral arm base end portion 44) extending in the counterclockwise direction, and the lower step 44a (FIGS. 3 and 5) is formed at this step. See) is more prominent. A step is also formed at the distal end opposite to the inner peripheral arm base end portion 44 (hereinafter referred to as the inner peripheral arm distal end portion 46), and the upper step 46a further protrudes. Similar to the structure of the end portion of the outer peripheral arm portion 36, the structure of the end portion of the inner peripheral arm portion 38 is a structure that enables transmission and reception of force in the axial direction and the radial direction by the step and the end surface of the pillow portion 28.

隣接する内周腕部38同士は、これらの内周腕基端部44と内周腕先端部46のそれぞれの段差が係合して、一定の厚さ(上下方向の寸法)の内周環32が構成される。また、内周環32の径方向の寸法も一定である。内周腕基端部44の上に向いた面と内周腕先端部46の下に向いた面は軸線方向に対して直交している。また、内周腕基端部44および内周腕先端部46の周方向に向いた面は、周方向に対して直交している。固定部材セグメント34Aの内周腕基端部44Aの段差は、固定部材セグメント34Bの内周腕先端部46Bの段差と係合し、これを下から支える形状となっている。固定部材セグメント34Aの内周腕先端部46Aの段差は、固定部材セグメント34Cの内周腕基端部44Cの段差に下から支えられる形状となっている。内周腕基端部44と内周腕先端部46は、固定部材セグメント同士の内周側における接合部の要素であり、軸線方向において力の授受が可能な軸線方向係合構造を形成する。   The adjacent inner peripheral arm portions 38 are engaged with each other by the respective steps of the inner peripheral arm base end portion 44 and the inner peripheral arm distal end portion 46 so as to have an inner peripheral ring having a constant thickness (vertical dimension). 32 is configured. Moreover, the dimension of the radial direction of the inner periphery ring 32 is also constant. The surface facing the upper end portion 44 of the inner peripheral arm and the surface facing the lower end portion 46 of the inner peripheral arm are orthogonal to the axial direction. Further, the surfaces of the inner peripheral arm proximal end portion 44 and the inner peripheral arm distal end portion 46 facing in the circumferential direction are orthogonal to the circumferential direction. The step of the inner peripheral arm base end portion 44A of the fixing member segment 34A engages with the step of the inner peripheral arm distal end portion 46B of the fixing member segment 34B, and is shaped to support this from below. The step of the inner peripheral arm distal end portion 46A of the fixing member segment 34A is shaped to be supported from below by the step of the inner peripheral arm base end portion 44C of the fixing member segment 34C. The inner peripheral arm proximal end portion 44 and the inner peripheral arm distal end portion 46 are elements of a joint portion on the inner peripheral side of the fixing member segments, and form an axial engagement structure capable of transmitting and receiving force in the axial direction.

固定部材セグメント34の内周腕基端部44においては、段差が形成されることにより、枕部28の内周側の端面の一部が露出している。この露出した端面28bに、隣接する固定部材セグメント34の内周腕先端部46の上側の段46aが径方向内側から当接することができる。固定部材セグメント34Aの内周腕基端部44Aは、隣接する固定部材セグメント34Bの枕部28Bの外周側端面に径方向内側から当接しており、固定部材セグメント34Bを外側へ押すことができる。固定部材セグメント34Aの枕部28Aの内周側端面は、隣接する固定部材セグメント34Bの内周腕先端部46Bを径方向内側から受けることができる。内周腕基端部44および内周腕先端部46と、枕部28の内周側の露出した端面28bとは、固定部材セグメント同士の内周側における接合部の要素であり、径方向において力の授受が可能な径方向係合構造を形成する。枕部28の露出した端面28bを利用して径方向において力の授受が可能な構造を形成したが、内周腕基端部44と内周腕先端部46のそれぞれに、これらを周方向に沿う方向からみたときに段差となる構造を設け、径方向の力の授受を可能とすることもできる。   In the inner peripheral arm base end portion 44 of the fixing member segment 34, a part of the end surface on the inner peripheral side of the pillow portion 28 is exposed by forming a step. An upper step 46a of the distal end portion 46 of the inner peripheral arm of the adjacent fixing member segment 34 can contact the exposed end surface 28b from the radially inner side. The inner peripheral arm base end portion 44A of the fixing member segment 34A is in contact with the outer peripheral side end surface of the pillow portion 28B of the adjacent fixing member segment 34B from the inside in the radial direction, and can push the fixing member segment 34B outward. The inner peripheral side end surface of the pillow portion 28A of the fixing member segment 34A can receive the inner peripheral arm tip portion 46B of the adjacent fixing member segment 34B from the radially inner side. The inner peripheral arm base end portion 44 and the inner peripheral arm distal end portion 46 and the exposed end surface 28b on the inner peripheral side of the pillow portion 28 are elements of the joint portion on the inner peripheral side of the fixing member segments, and in the radial direction A radial engagement structure capable of transmitting and receiving force is formed. A structure capable of transmitting and receiving force in the radial direction is formed by using the exposed end surface 28b of the pillow portion 28. The structure is formed in each of the inner peripheral arm proximal end portion 44 and the inner peripheral arm distal end portion 46 in the circumferential direction. It is also possible to provide a structure that becomes a step when viewed from the direction along the direction along which radial force can be exchanged.

固定部材26を用いたステータ10の製造工程について説明する。まず、固定部材セグメント34を樹脂射出成形により形成する。個々の固定部材セグメント34は固定部材26全体の形状よりも小さいので、射出成形型の温度などの管理を厳密に行わなくても比較的高い寸法精度を維持することができる。固定部材セグメント34を周方向に並べ、図2に示すように環状に配置する。このとき、外周腕先端部40、外周腕基端部42および枕部28の外周側の露出した端面28aが係合状態となり、内周腕基端部44、内周腕先端部46および枕部28の外周側の露出した端面28bが係合状態となる。ただし、このとき固定部材セグメント34同士は、接着などによって結合されておらず、分離可能な状態である。一方で、ステータコア12を準備する。ステータコア12は、電磁鋼板を軸線方向に積層して形成することができる。   A manufacturing process of the stator 10 using the fixing member 26 will be described. First, the fixing member segment 34 is formed by resin injection molding. Since the individual fixing member segments 34 are smaller than the overall shape of the fixing member 26, relatively high dimensional accuracy can be maintained without strictly managing the temperature of the injection mold. The fixing member segments 34 are arranged in the circumferential direction and arranged in an annular shape as shown in FIG. At this time, the outer peripheral arm distal end portion 40, the outer peripheral arm proximal end portion 42, and the exposed end surface 28a on the outer peripheral side of the pillow portion 28 are engaged, and the inner peripheral arm proximal end portion 44, the inner peripheral arm distal end portion 46, and the pillow portion. The exposed end face 28b on the outer peripheral side of 28 is in an engaged state. However, at this time, the fixing member segments 34 are not coupled by bonding or the like, and are in a separable state. On the other hand, the stator core 12 is prepared. The stator core 12 can be formed by laminating electromagnetic steel plates in the axial direction.

次に、環状の固定部材26を把持し、ステータコア12の端面へと搬送する。図6に環状の固定部材26をステータコア12の端面へと搬送する際に用いるクランプについて示す。環状の固定部材26は、径方向クランプ48と軸線方向クランプ50により把持される。径方向クランプ48は、半円弧形状の内周壁を有する2個のクランプ片48a,48bを含む。クランプ片48a,48bの内周壁は、固定部材26の外周環30に沿い、固定部材26の略全周を囲ってこれを保持する。また、軸線方向クランプ50は、2個のクランプ片50a,50bで外周環30を軸線方向上下から挟み、これを保持する。固定部材セグメント34同士は、これらの係合構造により相互に支え合い、これによって、固定部材26の形状が維持される。   Next, the annular fixing member 26 is gripped and conveyed to the end face of the stator core 12. FIG. 6 shows a clamp used when the annular fixing member 26 is conveyed to the end face of the stator core 12. The annular fixing member 26 is gripped by the radial clamp 48 and the axial clamp 50. The radial clamp 48 includes two clamp pieces 48a and 48b having a semicircular arc-shaped inner peripheral wall. The inner peripheral walls of the clamp pieces 48 a and 48 b extend along the outer peripheral ring 30 of the fixing member 26 and surround and hold substantially the entire periphery of the fixing member 26. Further, the axial clamp 50 holds the outer ring 30 from above and below in the axial direction by two clamp pieces 50a and 50b. The fixing member segments 34 support each other by these engagement structures, and thereby the shape of the fixing member 26 is maintained.

径方向クランプ48と軸線方向クランプ50により把持された状態で、固定部材26をステータコア12の端面に運び、ここに載置する。スロット20に絶縁用のスロット紙を挿入する。さらに、コイル導線22をスロットに通し、径方向クランプ48および軸線方向クランプ50による固定部材26の把持を解放した後、コイル導線22を曲げる。このとき、固定部材セグメント34同士が固定されていないため、固定部材26とステータコア12の間に隙間が形成されず、コイル導線22から力を受けたときの固定部材26の破損が防止される。そして、コイル導線22の端を溶接してコイル14を形成する。   In a state of being gripped by the radial clamp 48 and the axial clamp 50, the fixing member 26 is carried to the end face of the stator core 12 and placed thereon. The slot paper for insulation is inserted into the slot 20. Further, after passing the coil conductor 22 through the slot and releasing the holding of the fixing member 26 by the radial clamp 48 and the axial clamp 50, the coil conductor 22 is bent. At this time, since the fixing member segments 34 are not fixed, a gap is not formed between the fixing member 26 and the stator core 12, and the fixing member 26 is prevented from being damaged when receiving a force from the coil conductor 22. Then, the coil 14 is formed by welding the ends of the coil lead wires 22.

コイル成形後、固定部材セグメント34同士が接着等により固定されてよい。固定部材セグメント34とコイル14が一体にワニスによって固定されてもよい。   After the coil molding, the fixing member segments 34 may be fixed by adhesion or the like. The fixing member segment 34 and the coil 14 may be fixed integrally with a varnish.

コイルの固定部材の一態様を以下に記す。
回転電機のステータコアの軸線方向の端面に配置されコイルの位置を安定化させるコイルの固定部材であって、
固定部材は、全体として円環形状であり、ステータコアの各ティースの端面に対応して位置する枕部と、枕部の径方向外端をつないで延びている外周環と、枕部の径方向内端をつないで延びている内周環と、を有し、
固定部材は、周方向に分割された複数の固定部材セグメントから構成され、
隣接する固定部材セグメント同士の外周側接合部および内周側接合部には、それぞれステータコアの軸線方向において力の授受が可能な軸線方向係合構造と、ステータコアの径方向において力の授受が可能な径方向係合構造とが形成されており、
外周側接合部および内周側接合部の軸線方向係合構造は、当該固定部材セグメントの第1の側に隣接する固定部材セグメントを下から支える構造であり、当該固定部材セグメントの第2の側に隣接する固定部材セグメントに下から支えられる構造であり、
外周側接合部および内周側接合部の径方向係合構造は、当該固定部材セグメントの第1の側に隣接する固定部材セグメントを径方向内側に押す構造であり、当該固定部材セグメントの第2の側に隣接する固定部材セグメントを径方向内側から受ける構造である、
コイルの固定部材。
One aspect of the coil fixing member will be described below.
A coil fixing member that is disposed on an end face in the axial direction of a stator core of a rotating electrical machine and stabilizes the position of the coil,
The fixing member has an annular shape as a whole, a pillow portion corresponding to the end face of each tooth of the stator core, an outer ring extending by connecting the radial outer ends of the pillow portion, and the radial direction of the pillow portion An inner ring extending from the inner end, and
The fixing member is composed of a plurality of fixing member segments divided in the circumferential direction,
An axially engaging structure capable of transmitting and receiving a force in the axial direction of the stator core and a force in the radial direction of the stator core can be transmitted to an outer peripheral side joint and an inner peripheral side joint between adjacent fixing member segments, respectively. A radial engagement structure is formed,
The axial direction engagement structure of the outer peripheral side joint and the inner peripheral side joint is a structure that supports the fixing member segment adjacent to the first side of the fixing member segment from below, and the second side of the fixing member segment. It is a structure supported from below by a fixing member segment adjacent to
The radial engagement structure of the outer peripheral side joint and the inner peripheral side joint is a structure in which the fixing member segment adjacent to the first side of the fixing member segment is pushed inward in the radial direction. It is a structure that receives the fixing member segment adjacent to the side from the radially inner side,
Coil fixing member.

コイルの固定部材の別の一態様を以下に記す。
回転電機のステータコアの軸線方向の端面に配置されコイルの位置を安定化させるコイルの固定部材であって、
固定部材は、全体として円環形状であり、ステータコアの各ティースの端面に対応して位置する枕部と、枕部の径方向外端をつないで延びている外周環と、枕部の径方向内端をつないで延びている内周環と、を有し、
固定部材は、周方向に分割された複数の固定部材セグメントから構成され、
各固定部材セグメントは、外周環を構成する外周腕部と、内周環を構成する内周腕部とを有し、
外周腕部は枕部から周方向第1の側に延び、内周腕部は枕部から周方向第2の側に延び、
外周腕部の周方向第1の側の端部に、隣接する外周腕部の端部を下から支える段差が形成されており、
外周腕部の周方向第2の側の端部に、隣接する外周腕部の端部に下から支えられ、また隣接する外周腕部の端部が枕部の外周端面に径方向外側から当接することを許容する段差が形成されており、
内周腕部の周方向第1の側の端部に、隣接する内周腕部の端部を下から支え、また隣接する内周腕部の端部が枕部の内周端面に径方向内側から当接することを許容する段差が形成されており、
内周腕部の周方向第2の側の端部に、隣接する内周腕部の端部に下から支えられる段差が形成されている、
コイルの固定部材。
Another aspect of the coil fixing member is described below.
A coil fixing member that is disposed on an end face in the axial direction of a stator core of a rotating electrical machine and stabilizes the position of the coil,
The fixing member has an annular shape as a whole, a pillow portion corresponding to the end face of each tooth of the stator core, an outer ring extending by connecting the radial outer ends of the pillow portion, and the radial direction of the pillow portion An inner ring extending from the inner end, and
The fixing member is composed of a plurality of fixing member segments divided in the circumferential direction,
Each fixing member segment has an outer peripheral arm portion constituting an outer peripheral ring and an inner peripheral arm portion constituting an inner peripheral ring,
The outer peripheral arm portion extends from the pillow portion to the first circumferential side, the inner peripheral arm portion extends from the pillow portion to the second circumferential direction,
A step is formed at the end of the outer peripheral arm on the first side in the circumferential direction to support the end of the adjacent outer peripheral arm from below,
The end of the outer peripheral arm is supported from below by the end of the adjacent outer arm, and the end of the adjacent outer arm contacts the outer end of the pillow from the outer side in the radial direction. A step that allows contact is formed,
The end of the inner peripheral arm is supported on the end on the first circumferential side of the inner peripheral arm from below, and the end of the adjacent inner peripheral arm is radially directed to the inner peripheral end surface of the pillow portion. A step that allows contact from the inside is formed,
A step that is supported from below on the end of the adjacent inner peripheral arm is formed at the end on the second circumferential side of the inner peripheral arm,
Coil fixing member.

10 ステータ、12 ステータコア、14 コイル、16 ヨーク部、18 ティース、20 スロット、22 コイル導線、24 コイルエンド、26 固定部材、28 枕部、28a 枕部外周側の露出した端面、28b 枕部内周側の露出した端面、30 外周環、32 内周環、34 固定部材セグメント、36 外周腕部、38 内周腕部、40 外周腕先端部、40a 段差の下側の段、42 外周腕基端部、42a 段差の上側の段、44 内周腕基端部、44a 段差の下側の段、46 内周腕先端部、46a 段差の上側の段、48 径方向クランプ、50 軸線方向クランプ。   DESCRIPTION OF SYMBOLS 10 Stator, 12 Stator core, 14 Coil, 16 Yoke part, 18 teeth, 20 slot, 22 Coil conductor, 24 Coil end, 26 Fixing member, 28 Pillow part, 28a Exposed end surface of the pillow part outer periphery side, 28b Pillow part inner peripheral side Exposed end face, 30 outer ring, 32 inner ring, 34 fixing member segment, 36 outer arm part, 38 inner arm part, 40 outer arm tip part, 40a lower step of step, 42 outer arm base end part 42a Upper step, 44 Inner arm proximal end, 44a Lower step, 46 Inner arm tip, 46a Upper step, 48 Radial clamp, 50 Axial clamp.

Claims (1)

回転電機のステータを製造する方法であって、
周方向に並べられて円環形状の固定部材を形成する樹脂製の固定部材セグメントを形成するセグメント形成ステップと、
固定部材セグメントを周方向に並べ、環状に配置するセグメント配置ステップと、
環状に配置された固定部材セグメントを径方向クランプと軸線方向クランプで把持し、環状に配置された固定部材セグメントを一体にした状態で、ステータコアの軸線方向の端面へと搬送するセグメント搬送ステップと、
ステータコアのスロットにコイル導線を通し、固定部材に沿ってコイル導線を曲げて成形するコイル導線成形ステップと、
を有し、
固定部材は、ステータコアの各ティースの端面に対応して位置する枕部と、枕部の径方向外端をつないで延びている外周環と、枕部の径方向内端をつないで延びている内周環と、を有し、
周方向に並べられたとき隣接している固定部材セグメント同士の外周側接合部および内周側接合部には、それぞれステータコアの軸線方向において力の授受が可能な軸線方向係合構造と、ステータコアの径方向において力の授受が可能な径方向係合構造とが形成されており、
セグメント搬送ステップにおいて、径方向クランプによって固定部材の外周環を囲うようにして固定部材を保持し、また軸線方向クランプによって固定部材の外周環の1箇所を軸線方向において挟んで固定部材を保持し、さらに外周側接合部および内周側接合部の軸線方向係合構造により、各固定部材セグメントは、当該固定部材セグメントの第1の側に隣接する固定部材セグメントを下から支え、当該固定部材セグメントの第2の側に隣接する固定部材セグメントに下から支えられ、さらにまた外周側接合部および内周側接合部の径方向係合構造により、各固定部材セグメントは、当該固定部材セグメントの第1の側に隣接する固定部材セグメントを径方向内側に押し、当該固定部材セグメントの第2の側に隣接する固定部材セグメントを径方向内側から受け、
コイル導線成形ステップにおいて、コイル導線は固定部材の枕部に沿って曲げて成形される、
方法。
A method of manufacturing a stator for a rotating electrical machine,
A segment forming step for forming a resin-made fixing member segment arranged in the circumferential direction to form an annular fixing member;
A segment arrangement step for arranging the fixing member segments in the circumferential direction and arranging them in an annular shape
A segment conveying step of gripping the annularly arranged fixing member segment with a radial clamp and an axial clamp, and conveying the annularly arranged fixing member segment to the axial end surface of the stator core, and
A coil conductor forming step of passing the coil conductor through the slot of the stator core and bending the coil conductor along the fixing member;
Have
The fixing member extends by connecting the pillow portion positioned corresponding to the end surface of each tooth of the stator core, the outer peripheral ring extending by connecting the radially outer end of the pillow portion, and the radially inner end of the pillow portion. An inner ring, and
An axial engagement structure capable of transmitting and receiving a force in the axial direction of the stator core, respectively, on the outer peripheral side joint and the inner peripheral side joint between adjacent fixing member segments when arranged in the circumferential direction, and the stator core A radial engagement structure capable of transmitting and receiving force in the radial direction is formed,
In the segment conveying step, the fixing member is held so as to surround the outer peripheral ring of the fixing member by the radial clamp, and the fixing member is held by sandwiching one place of the outer peripheral ring of the fixing member in the axial direction by the axial clamp, Furthermore, due to the axial direction engagement structure of the outer peripheral side joint and the inner peripheral side joint, each fixing member segment supports the fixing member segment adjacent to the first side of the fixing member segment from below, and Each of the fixing member segments is supported by the fixing member segment adjacent to the second side from the bottom, and further, due to the radial engagement structure of the outer peripheral side joint portion and the inner peripheral side joint portion. The fixing member segment adjacent to the side is pushed radially inward, and the fixing member segment adjacent to the second side of the fixing member segment is Received from the direction inside,
In the coil conductor forming step, the coil conductor is formed by bending along the pillow portion of the fixing member.
Method.
JP2015231596A 2015-11-27 2015-11-27 Method of manufacturing stator for rotary electric machine Pending JP2017099211A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020027351A1 (en) * 2018-08-01 2020-02-06 엘지전자 주식회사 Motor
JP2020162363A (en) * 2019-03-27 2020-10-01 ダイキン工業株式会社 Stator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020027351A1 (en) * 2018-08-01 2020-02-06 엘지전자 주식회사 Motor
JP2020162363A (en) * 2019-03-27 2020-10-01 ダイキン工業株式会社 Stator
WO2020196182A1 (en) * 2019-03-27 2020-10-01 ダイキン工業株式会社 Stator
JP7436775B2 (en) 2019-03-27 2024-02-22 ダイキン工業株式会社 stator

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