JP5611069B2 - Rotating electric machine - Google Patents

Rotating electric machine Download PDF

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JP5611069B2
JP5611069B2 JP2011012449A JP2011012449A JP5611069B2 JP 5611069 B2 JP5611069 B2 JP 5611069B2 JP 2011012449 A JP2011012449 A JP 2011012449A JP 2011012449 A JP2011012449 A JP 2011012449A JP 5611069 B2 JP5611069 B2 JP 5611069B2
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stator
peripheral surface
housing
rotating electrical
electrical machine
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JP2012157110A (en
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崇敬 市川
崇敬 市川
橋本　昭
昭 橋本
隆司 梅田
隆司 梅田
光利 戸谷
光利 戸谷
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Mitsubishi Electric Corp
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Description

この発明は、回転電機に関するものであり、特に、ステータを保護するハウジングを備えた回転電機に関するものである。   The present invention relates to a rotating electrical machine, and more particularly to a rotating electrical machine including a housing that protects a stator.

従来の回転電機は、ステータをハウジングへ固定するため、ステータ取付面を有するハウジングとの焼き嵌めが行われる（例えば、特許文献１参照）。しかし、ステータとハウジングを焼き嵌めによって固定する場合、ハウジングの加熱が必要となり、加熱炉などの設備費やその維持管理費用、設置スペースを要するため、回転電機の製造コストが高くなる。
また、焼き嵌めによりステータにハウジングからの応力が加わるため、ステータコアにひずみが生じる。このひずみは、回転電機のトルク脈動の悪化の原因となり、モータ効率の低下の要因となる。
そこで、ステータの外径よりもわずかに大きな直径の内周面を有するハウジングを用意し、ステータ外周面に接着剤を塗布してから、このステータをハウジングの内周面に嵌め合わせて固定する構成やネジを併用する構成が提案されている（例えば、特許文献２参照）。 In a conventional rotating electrical machine, shrinkage fitting with a housing having a stator mounting surface is performed in order to fix the stator to the housing (see, for example, Patent Document 1). However, when the stator and the housing are fixed by shrinkage fitting, the housing needs to be heated, and equipment costs such as a heating furnace, its maintenance and management costs, and installation space are required, which increases the manufacturing cost of the rotating electrical machine.
Moreover, since stress from the housing is applied to the stator by shrink fitting, distortion occurs in the stator core. This distortion causes deterioration of torque pulsation of the rotating electrical machine, and causes reduction in motor efficiency.
Accordingly, a housing having an inner peripheral surface having a diameter slightly larger than the outer diameter of the stator is prepared, an adhesive is applied to the outer peripheral surface of the stator, and then the stator is fitted and fixed to the inner peripheral surface of the housing. The structure which uses a screw | thread and a screw together is proposed (for example, refer patent document 2).

特開２００４−２０１４２８号公報（段落００３４、第１図）JP 2004-201428 (paragraph 0034, FIG. 1) 特開２００８−９２７５９号公報（段落００１２）JP 2008-92759 A (paragraph 0012)

しかしながら、ステータとハウジングを接着剤により固定する製造方法や、ネジを併用するタイプの場合、強度を高めようとすると接着剤の使用量が多くなったり、ネジを使用したりする分、更に製造コストが高くなるという問題があった。   However, in the case of a manufacturing method in which the stator and the housing are fixed with an adhesive, or in the case of a type that uses screws together, if the strength is increased, the amount of adhesive used increases or the use of screws further increases the manufacturing cost. There was a problem that became high.

この発明は、以上のような課題を解決するためになされたものであり、製造コストの安価な回転電機の提供を目的とする。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a rotating electrical machine that is inexpensive to manufacture.

本発明に係る回転電機は、ステータコアにコイルを巻回したステータと、ステータの外周面を保持するハウジングとを接着する回転電機において、
ステータの外周面とハウジングの内周面との間に隙間を設け、
ステータの外周面又はハウジングの内周面の少なくとも一方に、ステータの軸方向に延在する凹部または凸部の少なくとも一方を設け、
隙間内に凹部または凸部と係合する２種以上の形状の粒体と結合材を含む接着層を形成するものである。 The rotating electrical machine according to the present invention is a rotating electrical machine that bonds a stator in which a coil is wound around a stator core and a housing that holds an outer peripheral surface of the stator.
A gap is provided between the outer peripheral surface of the stator and the inner peripheral surface of the housing,
At least one of a concave portion or a convex portion extending in the axial direction of the stator is provided on at least one of the outer peripheral surface of the stator or the inner peripheral surface of the housing,
In the gap, an adhesive layer including two or more types of particles that engage with the concave portion or the convex portion and the binder is formed.

本発明に係る回転電機は、ステータコアにコイルを巻回したステータと、ステータの内周面を保持するハウジングとを接着する回転電機において、
ステータの内周面とハウジングの外周面との間に隙間を設け、
ステータの内周面又はハウジングの外周面の少なくとも一方に、ステータの軸方向に延在する凹部または凸部の少なくとも一方を設け、
隙間内に凹部または凸部と係合する２種以上の形状の粒体と結合材を含む接着層を形成するものである。 The rotating electrical machine according to the present invention is a rotating electrical machine that bonds a stator having a coil wound around a stator core and a housing that holds an inner peripheral surface of the stator.
A gap is provided between the inner peripheral surface of the stator and the outer peripheral surface of the housing,
At least one of a concave portion or a convex portion extending in the axial direction of the stator is provided on at least one of the inner peripheral surface of the stator or the outer peripheral surface of the housing,
In the gap, an adhesive layer including two or more types of particles that engage with the concave portion or the convex portion and the binder is formed.

本発明に係る回転電機は、
ステータの外周面とハウジングの内周面との間に隙間を設け、
ステータの外周面又はハウジングの内周面の少なくとも一方に、ステータの軸方向に延在する凹部または凸部の少なくとも一方を設け、
隙間内に凹部または凸部と係合する２種以上の形状の粒体と結合材を含む接着層を形成するものなので、
ステータ又はハウジングの少なくとも一方と接着層との間に係合部が形成されることにより、ステータを周方向において高強度にハウジングに固定することができる。
また、結合材の使用量を低減でき、回転電機の製造コストの抑制を図ることができる。 The rotating electrical machine according to the present invention is
A gap is provided between the outer peripheral surface of the stator and the inner peripheral surface of the housing,
At least one of a concave portion or a convex portion extending in the axial direction of the stator is provided on at least one of the outer peripheral surface of the stator or the inner peripheral surface of the housing,
Since it forms an adhesive layer containing two or more types of granules and a binding material that engages with the concave or convex portions in the gap,
By forming the engaging portion between at least one of the stator or the housing and the adhesive layer, the stator can be fixed to the housing with high strength in the circumferential direction.
Moreover, the usage-amount of a binder can be reduced and the manufacturing cost of a rotary electric machine can be suppressed.

また、本発明に係る回転電機は、
ステータの内周面とハウジングの外周面との間に隙間を設け、
ステータの内周面又はハウジングの外周面の少なくとも一方に、ステータの軸方向に延在する凹部または凸部の少なくとも一方を設け、
隙間内に凹部または凸部と係合する２種以上の形状の粒体と結合材を含む接着層を形成するもので、
ステータ又はハウジングの少なくとも一方と接着層との間に係合部が形成されることにより、ステータを周方向において高強度にハウジングに固定することができる。
また、結合材の使用量を低減でき、回転電機の製造コストの抑制を図ることができる。 Moreover, the rotating electrical machine according to the present invention is:
A gap is provided between the inner peripheral surface of the stator and the outer peripheral surface of the housing,
At least one of a concave portion or a convex portion extending in the axial direction of the stator is provided on at least one of the inner peripheral surface of the stator or the outer peripheral surface of the housing,
In the gap, forming an adhesive layer containing two or more types of particles and a binding material that engage with the concave or convex portions ,
By forming the engaging portion between at least one of the stator or the housing and the adhesive layer, the stator can be fixed to the housing with high strength in the circumferential direction.
Moreover, the usage-amount of a binder can be reduced and the manufacturing cost of a rotary electric machine can be suppressed.

本発明の実施の形態１に係る回転電機の断面模式図である。It is a cross-sectional schematic diagram of the rotary electric machine which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る回転電機の製造工程の一部を示す概念図である。It is a conceptual diagram which shows a part of manufacturing process of the rotary electric machine which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る回転電機のステータとハウジングの固定部を示す部分拡大図である。It is the elements on larger scale which show the fixing | fixed part of the stator and housing of rotary electric machine which concern on Embodiment 1 of this invention. 本発明の実施の形態１に係る回転電機の他の一例を示す断面模式図である。It is a cross-sectional schematic diagram which shows another example of the rotary electric machine which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る回転電機のステータとハウジングの固定部の他の一例を示す部分拡大図である。It is the elements on larger scale which show another example of the fixing | fixed part of the stator and housing of a rotary electric machine which concern on Embodiment 1 of this invention. 本発明の実施の形態１に係る回転電機の他の一例を示す断面模式図である。It is a cross-sectional schematic diagram which shows another example of the rotary electric machine which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る回転電機のステータの外周面及びハウジングの内周面の、凹部及び凸部の断面形状の例を示す図である。It is a figure which shows the example of the cross-sectional shape of a recessed part and a convex part of the outer peripheral surface of the stator of the rotary electric machine which concerns on Embodiment 1 of this invention, and the inner peripheral surface of a housing. 本発明の実施の形態１に係る回転電機の接着層に用いる粒体の断面形状の例を示す図である。It is a figure which shows the example of the cross-sectional shape of the granule used for the contact bonding layer of the rotary electric machine which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る回転電機のステータの外周面の凹部または凸部の断面形状の例を示す図である。It is a figure which shows the example of the cross-sectional shape of the recessed part or convex part of the outer peripheral surface of the stator of the rotary electric machine which concerns on Embodiment 1 of this invention. 本発明の実施の形態２に係る回転電機の断面模式図である。It is a cross-sectional schematic diagram of the rotary electric machine which concerns on Embodiment 2 of this invention. 本発明の実施の形態３に係る回転電機の製造工程の一部を示す概念図である。It is a conceptual diagram which shows a part of manufacturing process of the rotary electric machine which concerns on Embodiment 3 of this invention.

実施の形態１．
以下、この発明の実施の形態１を図に基づいて説明する。
図１は、本発明の実施の形態１に係る回転電機１００の断面模式図である。
電磁鋼板などの金属シートから環状のヨーク部と、このヨーク部から内周側に突出する複数のティース部を有するコア片をプレスで打ち抜き、このコア片を積層してステータコア１ａを構成し、このステータコア１ａのティースにコイル巻線１ｂを巻回してステータ１を構成する。 Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to the drawings.
FIG. 1 is a schematic cross-sectional view of a rotating electrical machine 100 according to Embodiment 1 of the present invention.
A core piece having an annular yoke portion and a plurality of teeth portions projecting from the yoke portion to the inner peripheral side from a metal sheet such as an electromagnetic steel sheet is punched out by pressing, and the core pieces are laminated to form a stator core 1a. The stator 1 is configured by winding the coil winding 1b around the teeth of the stator core 1a.

このステータ１の外周面１ｃには、ステータ１の軸方向に延びる複数の凹部１０ａを設けている。
そしてステータ１の外周面１ｃは、接着層８を介してステータ１を保持するハウジング２で覆われていている。
ステータ１の外周面１ｃと対向する面が、ハウジング２の内周面２ｃである。
また、ステータ１の径方向内側には、軸４と共に回転可能に組み合わされたロータ５が配置されている。 A plurality of recesses 10 a extending in the axial direction of the stator 1 are provided on the outer peripheral surface 1 c of the stator 1.
The outer peripheral surface 1 c of the stator 1 is covered with a housing 2 that holds the stator 1 via an adhesive layer 8.
A surface facing the outer peripheral surface 1 c of the stator 1 is an inner peripheral surface 2 c of the housing 2.
A rotor 5 that is rotatably combined with the shaft 4 is disposed on the radially inner side of the stator 1.

図２は、回転電機１００の製造工程の一部を示す概念図であり、ステータ１とハウジング２との固定部分の要部の部分断面を示している。
接着層８は、ステータ１の外周面１ｃとハウジング２の内周面２ｃとの間の隙間３に、粒体６と結合材７を混合して形成される。
結合材７は、粒体６と粒体６との間に浸透するとともに、ステータ１の外周面１ｃ、ハウジング２の内周面２ｃ、及び、粒体６を互いに接着して結合する。
ここで、接着層８の厚さをＧ、粒体６の平均径をＤとすると、それぞれの大きさの比率はＤ／Ｇ≦1／３程度となる。 FIG. 2 is a conceptual diagram showing a part of the manufacturing process of the rotating electrical machine 100, and shows a partial cross section of the main part of the fixed part between the stator 1 and the housing 2.
The adhesive layer 8 is formed by mixing the particles 6 and the binder 7 in the gap 3 between the outer peripheral surface 1 c of the stator 1 and the inner peripheral surface 2 c of the housing 2.
The binding material 7 penetrates between the particles 6 and the particles 6, and bonds the outer peripheral surface 1 c of the stator 1, the inner peripheral surface 2 c of the housing 2, and the particles 6 to each other.
Here, if the thickness of the adhesive layer 8 is G and the average diameter of the granules 6 is D, the ratio of the respective sizes is about D / G ≦ 1/3.

図３は、ステータ１とハウジング２の固定部の部分拡大図である。
図３（Ａ）に示すように、ステータ１の外周面１ｃの凹部１０ａは、粒体６の一部と係合するサイズとなっている。また、図３（Ｂ）に示すように凹部１０ａの替わりに凸部１０ｂを設けてもよい。 FIG. 3 is a partially enlarged view of a fixing portion between the stator 1 and the housing 2.
As shown in FIG. 3A, the recess 10 a of the outer peripheral surface 1 c of the stator 1 is sized to engage with a part of the particles 6. Further, as shown in FIG. 3B, a convex portion 10b may be provided instead of the concave portion 10a.

図４は、回転電機１００の他の一例を示す断面模式図であり、図５は、ステータ１とハウジング２の固定部の他の一例を示す部分拡大図である。
図４、図５に示すように、ハウジング２の内周面２ｃに凹部２０ａや凸部２０ｂを設けても良い。
図６は、回転電機１００の更に他の一例を示す断面模式図であり、図７は、ステータ１とハウジング２の固定部の更に他の一例を示す部分拡大図である。
図６、図７に示すように各凹凸部１０ａ、１０ｂ、２０ａ、２０ｂをステータ１の外周面１ｃとハウジング２の内周面２ｃの両方に設けても良いし、各凹凸部１０ａ、１０ｂ、２０ａ、２０ｂは混在してもよい。 FIG. 4 is a schematic cross-sectional view showing another example of the rotating electrical machine 100, and FIG. 5 is a partially enlarged view showing another example of the fixing portion between the stator 1 and the housing 2. As shown in FIG.
As shown in FIGS. 4 and 5, a recess 20 a or a protrusion 20 b may be provided on the inner peripheral surface 2 c of the housing 2.
6 is a schematic cross-sectional view showing still another example of the rotating electrical machine 100, and FIG. 7 is a partially enlarged view showing still another example of the fixing portion between the stator 1 and the housing 2. As shown in FIG.
As shown in FIGS. 6 and 7, the uneven portions 10 a, 10 b, 20 a, and 20 b may be provided on both the outer peripheral surface 1 c of the stator 1 and the inner peripheral surface 2 c of the housing 2, or the uneven portions 10 a, 10 b, 20a and 20b may be mixed.

図８は、回転電機１００のステータ１とハウジング２を固着する接着層８の形成に用いる粒体６の断面形状の例を示す図である。
図８（Ａ）の（ｉ）〜（ｉｉｉ）は略円形状の固形体、図８（Ｂ）の（ｉ）は略I字状、（ｉｉ）は略L字状、（ｉｉｉ）は略Ｖ字状の固形体の一例を示している。粒体６はステータ１の外周面１ｃやハウジング２の内周面２ｃに設けた凹部１０ａ、２０ａ、凸部１０ｂ、２０ｂに係合し易い形状であればどのような形状でも良い。 FIG. 8 is a diagram illustrating an example of a cross-sectional shape of the granule 6 used for forming the adhesive layer 8 that fixes the stator 1 and the housing 2 of the rotating electrical machine 100.
(I) to (iii) in FIG. 8 (A) are substantially circular solid bodies, (i) in FIG. 8 (B) is approximately I-shaped, (ii) is approximately L-shaped, and (iii) is approximately An example of a V-shaped solid body is shown. The granule 6 may have any shape as long as it can easily engage with the recesses 10a and 20a and the projections 10b and 20b provided on the outer peripheral surface 1c of the stator 1 and the inner peripheral surface 2c of the housing 2.

結合材７の種類については、アクリル系接着剤などの有機系接着剤の他に、セメントなどの無機系接着剤などを用いてもよい。また結合材７は、隙間３内に粒体６を先に充填した場合でも、ステータ１の外周面１ｃとハウジング２の内周面２ｃの間に十分な結合面を得ることができる粘度を有するものを使用する。   About the kind of binder 7, you may use inorganic adhesives, such as cement other than organic adhesives, such as an acrylic adhesive. Further, the bonding material 7 has a viscosity that can provide a sufficient bonding surface between the outer peripheral surface 1 c of the stator 1 and the inner peripheral surface 2 c of the housing 2 even when the granule 6 is first filled in the gap 3. Use things.

図９は、ステータ１の外周面１ｃに設けられる凹部１０ａおよび凸部１０ｂの断面の形状例を示す図である。凹部１０ａおよび凸部１０ｂの断面形状は、図３に示した略円形状の他、図９（Ａ）、（Ｂ）に示す略矩形状、または図９（Ｃ）、（Ｄ）に示す略Ｖ字状でもよい。また、図９（Ｅ）、（Ｆ）のようなアリ溝形状や吸付桟形状とすると、粒体６との係合をより強固にできる。   FIG. 9 is a diagram illustrating a cross-sectional shape example of the concave portion 10 a and the convex portion 10 b provided on the outer peripheral surface 1 c of the stator 1. In addition to the substantially circular shape shown in FIG. 3, the cross-sectional shapes of the concave portion 10a and the convex portion 10b are substantially rectangular shapes shown in FIGS. 9A and 9B, or substantially the same shapes shown in FIGS. 9C and 9D. It may be V-shaped. Further, when the dovetail shape or suction bar shape as shown in FIGS. 9E and 9F is used, the engagement with the particles 6 can be further strengthened.

本実施の形態によれば、凹部１０ａ、２０ａや凸部１０ｂ、２０ｂを有する、ステータ１の外周面１ｃと、ハウジング２の内周面２ｃの間の隙間３に、粒体６と結合材７を充填して形成される接着層８によってステータ１とハウジング２を固着するため、ステータ１及びハウジング２と接着層８との間に係合部が形成され、ステータ１を周方向において高強度に固定することができる。
また、結合材７の使用量を低減することが可能となり、製造コストの抑制を図ることができる。
さらに、粒体６に鉄や銅などの金属材料を用いた場合、接着層８の放熱性が向上し、製品の特性向上を図ることができる。 According to the present embodiment, in the gap 3 between the outer peripheral surface 1c of the stator 1 and the inner peripheral surface 2c of the housing 2 having the concave portions 10a and 20a and the convex portions 10b and 20b, the granules 6 and the binder 7 are provided. Since the stator 1 and the housing 2 are fixed by the adhesive layer 8 formed by filling the stator 1, the engaging portion is formed between the stator 1 and the housing 2 and the adhesive layer 8, so that the stator 1 has high strength in the circumferential direction. Can be fixed.
Moreover, it becomes possible to reduce the usage-amount of the binding material 7, and it can aim at suppression of manufacturing cost.
Further, when a metal material such as iron or copper is used for the particles 6, the heat dissipation of the adhesive layer 8 is improved, and the product characteristics can be improved.

実施の形態２．
以下、この発明の実施の形態２を図を用いて、実施の形態１と異なる部分を中心に説明する。
図１０は、本発明の実施の形態に係る回転電機２００の断面模式図である。
回転電機２００は、アウターロータタイプの回転電機である。
ロータ２０５が、ステータ２０１の外周面側対向して設けられていて、ハウジング２０２の外周面２０２ｃは、ステータ２０１の内周面２０１ｃに接着層２０８を介して接着固定されている。ハウジング２０２の外周面２０２ｃやステータ２０１の内周面２０１ｃに設ける凹凸部の構成等は実施の形態１と同様である。
本実施の形態２に係る回転電機２００は、実施の形態１と同様の効果を得ることができる。 Embodiment 2. FIG.
The second embodiment of the present invention will be described below with reference to the drawings, focusing on the differences from the first embodiment.
FIG. 10 is a schematic cross-sectional view of rotating electric machine 200 according to the embodiment of the present invention.
The rotating electrical machine 200 is an outer rotor type rotating electrical machine.
A rotor 205 is provided to face the outer peripheral surface of the stator 201, and the outer peripheral surface 202 c of the housing 202 is bonded and fixed to the inner peripheral surface 201 c of the stator 201 via an adhesive layer 208. The configuration of the concavo-convex portions provided on the outer peripheral surface 202c of the housing 202 and the inner peripheral surface 201c of the stator 201 is the same as that of the first embodiment.
The rotating electrical machine 200 according to the second embodiment can obtain the same effects as those of the first embodiment.

実施の形態３．
以下、この発明の実施の形態３を図を用いて、実施の形態１と異なる部分を中心に説明する。
図１１は、回転電機３００の製造工程の一部を示す概念図である。
この実施の形態では、接着層３０８に混入する粒体３０６に、電磁鋼板などの金属シートからプレス加工してステータコア１ａを形成した際に生じる廃材１１や、コイル巻線１ｂの廃材１２を用いている。
本実施の形態３に係る回転電機３００によれば、生産過程で排出される廃材の再利用が可能となり、工場内での材料歩留まりが向上し、廃材処分費も軽減できる。 Embodiment 3 FIG.
Hereinafter, the third embodiment of the present invention will be described with reference to the drawings, focusing on the differences from the first embodiment.
FIG. 11 is a conceptual diagram illustrating a part of the manufacturing process of the rotating electrical machine 300.
In this embodiment, the waste material 11 generated when the stator core 1a is formed by pressing a granular material 306 mixed in the adhesive layer 308 from a metal sheet such as an electromagnetic steel plate or the waste material 12 of the coil winding 1b is used. Yes.
According to the rotating electrical machine 300 according to the third embodiment, it is possible to reuse the waste material discharged in the production process, improve the material yield in the factory, and reduce the waste material disposal cost.

１００，２００，３００ 回転電機、１，２０１ ステータ、１ａ ステータコア、
１ｂ コイル巻線、１ｃ 外周面、２０１ｃ 内周面、２，２０２ ハウジング、
２ｃ 内周面、２０２ｃ 外周面、１０ａ，２０ａ 凹部、１０ｂ，２０ｂ 凸部、
３ 隙間、４，２０４ 軸、５，２０５ ロータ、６，３０６ 粒体、７ 結合材、
８，２０８，３０８ 接着層、１１，１２ 廃材。 100, 200, 300 rotating electric machine, 1,201 stator, 1a stator core,
1b coil winding, 1c outer peripheral surface, 201c inner peripheral surface, 2,202 housing,
2c inner peripheral surface, 202c outer peripheral surface, 10a, 20a concave portion, 10b, 20b convex portion,
3 gap, 4,204 shaft, 5,205 rotor, 6,306 granules, 7 binder,
8, 208, 308 Adhesive layer, 11, 12 Waste material.

Claims (8)

ステータコアにコイルを巻回したステータと、前記ステータの外周面を保持するハウジングとを接着する回転電機において、
前記ステータの外周面と前記ハウジングの内周面との間に隙間を設け、
前記ステータの外周面又は前記ハウジングの内周面の少なくとも一方に、前記ステータの軸方向に延在する凹部または凸部の少なくとも一方を設け、
前記隙間内に前記凹部または前記凸部と係合する２種以上の形状の粒体と結合材を含む接着層を形成する回転電機。 In a rotating electrical machine that bonds a stator in which a coil is wound around a stator core and a housing that holds an outer peripheral surface of the stator,
A gap is provided between the outer peripheral surface of the stator and the inner peripheral surface of the housing,
At least one of a concave portion or a convex portion extending in the axial direction of the stator is provided on at least one of the outer peripheral surface of the stator or the inner peripheral surface of the housing,
A rotating electrical machine that forms an adhesive layer including two or more types of particles that engage with the concave portion or the convex portion and a binding material in the gap. ステータコアにコイルを巻回したステータと、前記ステータの内周面を保持するハウジングとを接着する回転電機において、
前記ステータの内周面と前記ハウジングの外周面との間に隙間を設け、
前記ステータの内周面又は前記ハウジングの外周面の少なくとも一方に、前記ステータの軸方向に延在する凹部または凸部の少なくとも一方を設け、
前記隙間内に前記凹部または前記凸部と係合する２種以上の形状の粒体と結合材を含む接着層を形成する回転電機。 In a rotating electrical machine that bonds a stator in which a coil is wound around a stator core and a housing that holds the inner peripheral surface of the stator,
A gap is provided between the inner peripheral surface of the stator and the outer peripheral surface of the housing,
At least one of a concave portion or a convex portion extending in the axial direction of the stator is provided on at least one of the inner peripheral surface of the stator or the outer peripheral surface of the housing,
A rotating electrical machine that forms an adhesive layer including two or more types of particles that engage with the concave portion or the convex portion and a binding material in the gap. 前記接着層の厚さをＧ、前記粒体の平均径をＤとした場合、両者の大きさの比率は、Ｄ／Ｇ≦１／３である請求項１又は請求項２に記載の回転電機。 3. The rotating electrical machine according to claim 1 , wherein when the thickness of the adhesive layer is G and the average diameter of the particles is D, the ratio of the sizes is D / G ≦ 1/3. . 前記凹部は蟻溝形状であり、前記凸部は吸付桟形状である請求項１から請求項３のいずれか一項に記載の回転電機。 The recess is a dovetail groove shape, the rotary electric machine according to any one of claims 3 wherein the projections of claims 1 a吸付桟形shape. 前記粒体は略円形状、略Ｉ字状、略Ｌ字状、及び略Ｖ字状のいずれかを呈した粒体を含むことを特徴とする請求項１から請求項４のいずれか一項に記載の回転電機。 The granules are substantially circular, substantially I-shaped, substantially L-shaped, and any one of claims 1 to 4, characterized in that it comprises a particle body exhibited either substantially V-shaped The rotating electrical machine described in 1. 前記粒体は、金属材料であることを特徴とする請求項１から請求項５のいずれか一項に記載の回転電機。 The granules, the rotary electric machine as claimed in any one of claims 5, characterized in that the metallic material. 前記粒体は、前記ステータコア又は前記コイルと同じ材料から成ることを特徴とする請求項６に記載の回転電機。 The rotating electrical machine according to claim 6, wherein the particles are made of the same material as the stator core or the coil. 前記結合材は接着剤であることを特徴とする請求項１から請求項７のいずれか一項に記載の回転電機。 The rotating electrical machine according to claim 1, wherein the binding material is an adhesive.
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