JP6369260B2 - Rotating electric machine - Google Patents
Rotating electric machine Download PDFInfo
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- JP6369260B2 JP6369260B2 JP2014193336A JP2014193336A JP6369260B2 JP 6369260 B2 JP6369260 B2 JP 6369260B2 JP 2014193336 A JP2014193336 A JP 2014193336A JP 2014193336 A JP2014193336 A JP 2014193336A JP 6369260 B2 JP6369260 B2 JP 6369260B2
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Description
本発明は、回転電機に関する。 The present invention relates to a rotating electrical machine.
従来、ステータとモータのケースの間にヒートシンクを介在させてステータの熱をケースに伝達し放熱させるようにした回転電機が知られている（例えば、特許文献１参照）。
この従来技術では、ヒートシンクが板ばね部を備え、ヒートシンクの本体をステータに装着し、板ばね部の先端部をモータケースに当接させた構造となっている。
2. Description of the Related Art Conventionally, there is known a rotating electrical machine in which a heat sink is interposed between a stator and a motor case so that the heat of the stator is transmitted to the case and radiated (see, for example, Patent Document 1).
In this prior art, the heat sink has a leaf spring portion, the heat sink body is mounted on the stator, and the tip end portion of the leaf spring portion is in contact with the motor case.
しかしながら、上記従来技術では、板ばね部がヒートシンクに部分的に形成され、その板ばね部の先端部のみをモータケースに当接させているため、ステータからケースへの伝熱経路少なく、冷却性能の向上が望まれる。 However, in the above prior art, the leaf spring portion is partially formed on the heat sink, and only the tip portion of the leaf spring portion is in contact with the motor case, so there is less heat transfer path from the stator to the case, and the cooling performance Improvement is desired.
本発明は、上記問題に着目してなされたもので、ステータとモータケースとの間の伝熱経路を拡大し、冷却性能の向上を図ることができる回転電機を提供することを目的とする。 The present invention has been made paying attention to the above problem, and an object of the present invention is to provide a rotating electrical machine capable of expanding a heat transfer path between a stator and a motor case and improving cooling performance.
上記目的を達成するため、本発明は、
回転電機のケースとステータとの間の隙間に介在させた熱伝導部材として、内外に二重に配置した第１熱伝導部材と第２熱伝導部材とを設け、
前記第１熱伝導部材は、前記ステータに接触する第１本体部と、この第１本体部から外径方向に立ち上げられて前記ケースに弾性接触する第１板ばね部と、を備え、
前記第２熱伝導部材は、前記ケースに接触する第２本体部と、この第２本体部から内径方向に立ち上げられて前記ステータに弾性接触する第２板ばね部と、を備え、
前記第１本体部に、前記第２板ばね部を径方向に貫通させる第１開口部を設ける一方で、前記第２本体部に、前記第１板ばね部を径方向に貫通させる第２開口部を設けたことを特徴とする回転電機とした。
In order to achieve the above object, the present invention provides:
As the heat conduction member interposed in the gap between the case of the rotating electrical machine and the stator, a first heat conduction member and a second heat conduction member arranged in duplicate inside and outside are provided,
The first heat conducting member includes a first main body portion that contacts the stator, and a first leaf spring portion that is raised from the first main body portion in an outer diameter direction and elastically contacts the case,
The second heat conducting member includes a second main body portion that comes into contact with the case, and a second leaf spring portion that is raised from the second main body portion in an inner diameter direction and elastically contacts the stator,
The first body portion is provided with a first opening portion that allows the second leaf spring portion to pass through in the radial direction, while the second body portion includes a second opening that passes through the first leaf spring portion in the radial direction. The rotating electric machine is characterized in that a portion is provided.
本発明の回転電機では、ステータとケースとの熱伝導を、板ばね部を部分的に接触させた熱伝導部材により行う構造であっても、第１熱伝導部材と第２熱伝導部材とを内外二重に設けたため、１つの熱伝導部材を用いたものと比較して、熱伝達経路を増加できる。これにより、回転電機の冷却性能の向上を図ることができる。 In the rotating electrical machine of the present invention, even if the heat conduction between the stator and the case is performed by a heat conduction member in which the leaf spring portion is partially in contact, the first heat conduction member and the second heat conduction member are provided. Since the inner and outer doubles are provided, the number of heat transfer paths can be increased as compared with the case using one heat conducting member. Thereby, the cooling performance of a rotary electric machine can be improved.
以下、本発明の回転電機を実現する最良の形態を、図面に示す実施の形態に基づいて説明する。
（実施の形態１）
実施の形態１の回転電機を説明するのにあたり、回転電機の構造、熱伝導部材の構成の順に説明する。
（回転電機の構造）
図１に示す回転電機（以下、モータという）Ａは、多相（例えば、５相）交流モータであり、図１に示すように、モータケース１とステータ２とロータ３と熱伝導部材４とを備えている。
Hereinafter, the best mode for realizing the rotating electrical machine of the present invention will be described based on the embodiments shown in the drawings.
(Embodiment 1)
In describing the rotating electrical machine of the first embodiment, the structure of the rotating electrical machine and the configuration of the heat conducting member will be described in this order.
(Structure of rotating electrical machine)
A rotating electrical machine (hereinafter referred to as a motor) A shown in FIG. 1 is a multiphase (for example, five-phase) AC motor, and as shown in FIG. 1, a motor case 1, a stator 2, a rotor 3, and a heat conducting member 4. It has.
モータケース１は、モータＡの外郭を形成し、モータ外部からステータ２などを保護する機能を有しており、円筒部１１と底部１２とを備えている。円筒部１１は、一点鎖線により示す軸心線Ｃｅを中心とする円筒状に形成されている。底部１２は、円筒部１１の軸方向の一端（図１において左端）から内径方向に延びて形成されている。 The motor case 1 forms an outline of the motor A, has a function of protecting the stator 2 and the like from the outside of the motor, and includes a cylindrical portion 11 and a bottom portion 12. The cylindrical portion 11 is formed in a cylindrical shape centered on an axial center line Ce indicated by a one-dot chain line. The bottom 12 is formed to extend in the inner diameter direction from one end (left end in FIG. 1) of the cylindrical portion 11 in the axial direction.
ステータ２は、ステータコア２１のティース２２（図３参照）にステータコイル（図示省略）を巻き付けた周知の構造のものである。
なお、ステータコア２１は、円環状であり、その内周には、周方向に一定の間隔で配置された複数のティース２２が内径方向に突出され、ティース２２の間にスロット２３（図３参照）が設けられている。そして、各ティース２２にステータコイル（図示省略）が巻き付けられている。
また、ステータコア２１は、円弧状の鋼板２１ａを、図２に示すように軸方向（軸心線Ｃｅに沿う方向）に複数積層して形成されている。
The stator 2 has a known structure in which a stator coil (not shown) is wound around a tooth 22 (see FIG. 3) of the stator core 21.
The stator core 21 has an annular shape, and a plurality of teeth 22 arranged at regular intervals in the circumferential direction are projected in the inner diameter direction on the inner circumference thereof, and a slot 23 (see FIG. 3) between the teeth 22. Is provided. A stator coil (not shown) is wound around each tooth 22.
The stator core 21 is formed by laminating a plurality of arc-shaped steel plates 21a in the axial direction (direction along the axial center line Ce) as shown in FIG.
そして、ステータ２の軸心線Ｃｅの軸心に沿う方向の一端（図１において左端）には、マウント部材２４が設けられている。
マウント部材２４は、モータケース１の底部１２にボルト（図示省略）により締結されてモータケース１に片持ち支持されている。
A mount member 24 is provided at one end (left end in FIG. 1) in the direction along the axis of the axis 2 Ce of the stator 2.
The mount member 24 is fastened to the bottom 12 of the motor case 1 by bolts (not shown) and is cantilevered by the motor case 1.
ロータ３は、ステータ２の内周位置にステータ２と略同軸であり、かつ、ステータ２の内周に対して径方向の間隙（ラジアルギャップ）を介して配置され、この間隙を通して磁路が形成される。ロータ３は、例えば、複数の電磁鋼板（図示省略）を積層することで構成されたロータコア３１を備え、このロータコア３１には永久磁石（図示省略）が周方向に複数設置されている。
また、ロータ３には、モータＡの出力軸３２が固定されている。
The rotor 3 is substantially coaxial with the stator 2 at the inner peripheral position of the stator 2 and is disposed via a radial gap (radial gap) with respect to the inner periphery of the stator 2, and a magnetic path is formed through the gap. Is done. The rotor 3 includes, for example, a rotor core 31 formed by laminating a plurality of electromagnetic steel plates (not shown), and a plurality of permanent magnets (not shown) are installed in the rotor core 31 in the circumferential direction.
Further, the output shaft 32 of the motor A is fixed to the rotor 3.
したがって、モータＡは、ステータ２に通電すると、ステータ２が発生する電磁力によりロータ３が回転駆動される。そして、このモータＡから出力される回転駆動力は、出力軸３２を介して外部に回転力として伝達される。 Therefore, when the motor A energizes the stator 2, the rotor 3 is rotationally driven by the electromagnetic force generated by the stator 2. The rotational driving force output from the motor A is transmitted to the outside through the output shaft 32 as rotational force.
次に、モータケース１とステータ２との間に介在される熱伝導部材４について説明する。
すなわち、前述のようにステータ２は、軸方向の一端がモータケース１に片持ち支持され、ステータ２の外周とモータケース１の内周との間には隙間５が設けられている。
そして、この隙間５に、モータケース１とステータ２とに熱接触してステータ２の熱をモータケース１に伝達する熱伝達部材４が設けられている。この熱伝達部材４は、後述のように、ステータ２の外周面およびモータケース１の内周に弾性を有して接触し、ステータ２がモータケース１に対して径方向および周方向に変位した場合でも接触状態を保つ。
Next, the heat conducting member 4 interposed between the motor case 1 and the stator 2 will be described.
That is, as described above, one end of the stator 2 in the axial direction is cantilevered by the motor case 1, and a gap 5 is provided between the outer periphery of the stator 2 and the inner periphery of the motor case 1.
The gap 5 is provided with a heat transfer member 4 that is in thermal contact with the motor case 1 and the stator 2 to transmit the heat of the stator 2 to the motor case 1. As will be described later, the heat transfer member 4 elastically contacts the outer peripheral surface of the stator 2 and the inner periphery of the motor case 1, and the stator 2 is displaced in the radial direction and the circumferential direction with respect to the motor case 1. Stay in contact even in cases.
（熱伝導部材）
次に、熱伝導部材４の構成を説明する。
前記熱伝導部材４は、図２示すように、熱伝導性に優れた金属（例えば、アルミニウムや銅）製の第１熱伝導部材４１と第２熱伝導部材４２とを、径方向に内外二重に重ねて構成されている。なお、熱伝導部材４は、隙間５の周方向の全周に亘って設けているが、この熱伝導部材４は、全周に亘る円環状に形成してもよいし、あるいは、周方向に所定の寸法を有するものを、周方向に複数並べることで、全周に亘って設けてもよい。
(Heat conduction member)
Next, the configuration of the heat conducting member 4 will be described.
As shown in FIG. 2, the heat conducting member 4 includes a first heat conducting member 41 and a second heat conducting member 42 made of a metal (for example, aluminum or copper) having excellent heat conductivity. It is composed of overlapping layers. In addition, although the heat conductive member 4 is provided over the perimeter of the circumferential direction of the clearance gap 5, this heat conductive member 4 may be formed in the annular | circular shape over a perimeter, or in the circumferential direction. You may provide over the perimeter by arranging in multiple numbers what has a predetermined dimension in the circumferential direction.
以下に、各熱伝導部材４１，４２の構成を説明する。
前記第１熱伝導部材４１は、前記ステータ２に接触する薄板状の第１本体部４１ａと、この第１本体部４１ａから外径方向に立ち上げられて前記モータケース１の内周に接触する第１板ばね部４１ｂと、を備えている。なお、第１板ばね部４１ｂは、径方向に変形可能であるとともに、弾性力による圧力を加えた状態でモータケース１の内周に接触している。したがって、ステータ２がモータケース１に対して径方向および周方向に変位した際にも、モータケース１への接触状態を保つことができる。
Below, the structure of each heat conductive member 41 and 42 is demonstrated.
The first heat conducting member 41 is a thin plate-like first main body portion 41 a that contacts the stator 2, and is raised from the first main body portion 41 a in the outer diameter direction to contact the inner periphery of the motor case 1. First leaf spring portion 41b. The first leaf spring portion 41b can be deformed in the radial direction, and is in contact with the inner periphery of the motor case 1 in a state where pressure by an elastic force is applied. Therefore, even when the stator 2 is displaced in the radial direction and the circumferential direction with respect to the motor case 1, the contact state with the motor case 1 can be maintained.
また、前記第１板ばね部４１ｂは、第１本体部４１ａを切り起こして形成している。すなわち、第１板ばね部４１ｂは、その基端部を前記第１本体部４１ａに片持ち支持し、第１先端部４１ｃを外径方向に立ち上げて形成している。なお、第１板ばね部４１ｂの立ち上げは、軸方向（図１に示す軸心線Ｃｅに沿う方向であり、矢印ｘ方向）に向かって延びつつ、第１先端部４１ｃをモータケース１に向けて軸直交方向に傾斜させた立ち上げとしている。 The first leaf spring portion 41b is formed by cutting and raising the first body portion 41a. That is, the first leaf spring portion 41b is formed by cantilevering its base end portion on the first main body portion 41a and raising the first tip portion 41c in the outer diameter direction. The first leaf spring portion 41b is raised while extending in the axial direction (in the direction along the axial center line Ce shown in FIG. The startup is inclined in the direction perpendicular to the axis.
そして、第１板ばね部４１ｂにおいて第１折曲部４１ｅよりも先端側の第１先端部４１ｃは、モータケース１の軸方向（矢印ｘ方向）に対して周方向（矢印ｚ方向）に幅広であって、周方向にステータ２との接触線を形成可能に延在された形状に形成されている。
なお、第１本体部４１ａには、第１板ばね部４１ｂを立ち上げた部分に第１開口部４１ｄが形成されている。この第１開口部４１ｄは、図４に示すように、略正方形の矩形状に形成されている。また、第１開口部４１ｄは、板ばね部４１ｂよりも周方向の幅寸法が大きく形成されており、板ばね部４１ｂが圧縮方向に変形した際に、板ばね部４ｂと第１本端部４１ａ（第１開口部４１ｄの周縁）とが干渉しにくく形成している。
And in the 1st leaf | plate spring part 41b, the 1st front-end | tip part 41c of the front end side rather than the 1st bending part 41e is wide in the circumferential direction (arrow z direction) with respect to the axial direction (arrow x direction) of the motor case 1. And it is formed in the shape extended so that the contact line with the stator 2 could be formed in the circumferential direction.
The first body 41a is formed with a first opening 41d at a portion where the first leaf spring 41b is raised. As shown in FIG. 4, the first opening 41d is formed in a substantially square rectangular shape. The first opening 41d is formed to have a larger width in the circumferential direction than the leaf spring portion 41b, and when the leaf spring portion 41b is deformed in the compression direction, the leaf spring portion 4b and the first end portion are formed. 41a (periphery of the first opening 41d) is formed so as not to interfere.
図２に戻り、前記第２熱伝導部材４２は、前記モータケース１に接触する薄板状の第２本体部４２ａと、この第２本体部４２ａから内径方向に立ち上げられて前記ステータ２に接触する第２板ばね部４２ｂと、を備えている。なお、第２板ばね部４２ｂは、径方向に変形可能であるとともに、弾性力による圧力を加えた状態でステータ２の外周に接触している。したがって、ステータ２がモータケース１に対して径方向および周方向に変位した際にも、ステータ２への接触状態を保つことができる。 Returning to FIG. 2, the second heat conducting member 42 comes into contact with the stator 2 by being raised in the inner diameter direction from the second main body portion 42 a in contact with the motor case 1 and the second main body portion 42 a. A second leaf spring portion 42b. The second leaf spring portion 42b can be deformed in the radial direction, and is in contact with the outer periphery of the stator 2 in a state where pressure by an elastic force is applied. Therefore, even when the stator 2 is displaced in the radial direction and the circumferential direction with respect to the motor case 1, the contact state with the stator 2 can be maintained.
また、前記第２板ばね部４２ｂは、第２本体部４２ａを切り起こして形成している。すなわち、第２板ばね部４２ｂは、その基端部を前記第２本体部４２ａに片持ち支持し、第２先端部４２ｃを内径方向に立ち上げて形成している。なお、この第２板ばね部４２ｂの立ち上げは、軸方向（矢印ｘ方向）に向かって延びつつ、前記第２先端部４２ｃを接触対象であるステータ２に向けて軸直交方向に傾斜させた立ち上げとしている。そして、第２板ばね部４２ｂと第１板ばね部４１ｂとが、図２に示すように、略同一方向に沿って略並行に並ぶように、第１、第２両熱伝導部材４１，４２を組み付けている。 The second leaf spring portion 42b is formed by cutting and raising the second main body portion 42a. That is, the second leaf spring portion 42b is formed by cantilevering the base end portion of the second leaf spring portion 42b on the second main body portion 42a and raising the second tip end portion 42c in the inner diameter direction. The second leaf spring portion 42b is raised while the second tip portion 42c is inclined in the direction perpendicular to the axis toward the stator 2 to be contacted while extending in the axial direction (arrow x direction). It is going to launch. Then, as shown in FIG. 2, the first and second heat conducting members 41, 42 are arranged so that the second leaf spring portion 42b and the first leaf spring portion 41b are arranged substantially in parallel along substantially the same direction. Is assembled.
そして、第２板ばね部４２ｂにおいて第２折曲部４２ｅよりも先端側の第２先端部４２ｃは、モータケース１の軸方向（矢印ｘ方向）に対して周方向（矢印ｚ方向）に幅広であって、周方向にステータ２との接触線を形成可能に延在された形状に形成されている。
なお、第２本体部４２ａには、第２板ばね部４２ｂを立ち上げた部分に第２開口部４２ｄが形成されている。この第２開口部４２ｄは、図示は省略するが、第１熱伝導部材４１と同様に、略正方形の矩形状に形成されている。
And in the 2nd leaf | plate spring part 42b, the 2nd front-end | tip part 42c of the front end side rather than the 2nd bending part 42e is wide in the circumferential direction (arrow z direction) with respect to the axial direction (arrow x direction) of the motor case 1. And it is formed in the shape extended so that the contact line with the stator 2 could be formed in the circumferential direction.
The second main body portion 42a has a second opening 42d formed at a portion where the second leaf spring portion 42b is raised. Although not shown, the second opening 42d is formed in a substantially square rectangular shape, like the first heat conducting member 41.
さらに、前述の第１・第２両開口部４１ｄ，４２ｄは、それぞれ、第１・第２両板ばね部４１ｂ，４２ｂに対向して配置され、両板ばね部４１ｂ，４２ｂを径方向に貫通させている。これにより、第１熱伝導部材４１の第１板ばね部４１ｂは、第２熱伝導部材４２の第２本体部４２ａに設けた第２開口部４２ｄを径方向に貫通することで、モータケース１に接触している。同様に、第２熱伝導部材４２の第２板ばね部４２ｂは、第１熱伝導部材４１の第１本体部４１ａに設けた第１開口部４１ｄを径方向に貫通することで、ステータ２に接触している。 Furthermore, the first and second openings 41d and 42d described above are arranged to face the first and second leaf springs 41b and 42b, respectively, and penetrate both the leaf springs 41b and 42b in the radial direction. I am letting. As a result, the first leaf spring portion 41b of the first heat conducting member 41 penetrates the second opening 42d provided in the second main body portion 42a of the second heat conducting member 42 in the radial direction, so that the motor case 1 Touching. Similarly, the second leaf spring portion 42b of the second heat conducting member 42 penetrates the stator 2 by passing through the first opening 41d provided in the first main body portion 41a of the first heat conducting member 41 in the radial direction. In contact.
なお、各熱伝導部材４１，４２の各本体部４１ａ，４２ａは、それぞれ、ステータ２に対して周方向の全周に亘る板状あるいは円環板状に形成してもよいし、周方向で複数に分割してもよい。各本体部４１ａ，４２ａを、周方向に複数に分割した場合、これらを周方向に並設することにより、隙間５の全周に亘って各熱伝導部材４１，４２を配置することができる。あるいは、両熱伝導部材４１，４２の一方を円環状に形成し、他方を周方向に複数に分割した構造としてもよい。 In addition, each main-body part 41a, 42a of each heat-conducting member 41, 42 may each be formed in the plate shape or annular plate shape over the perimeter of the circumferential direction with respect to the stator 2, and it is the circumferential direction. You may divide into several. When each main-body part 41a, 42a is divided | segmented into multiple in the circumferential direction, each heat conductive member 41, 42 can be arrange | positioned over the perimeter of the clearance gap 5 by arranging these in parallel in the circumferential direction. Or it is good also as a structure which formed one side of both the heat conductive members 41 and 42 in the annular | circular shape, and divided | segmented the other into multiple in the circumferential direction.
（実施の形態１の作用）
次に、実施の形態１の作用を、第１・第２熱伝導部材の組付時、熱伝導部材のステータへの組付時、モータ駆動時の順に説明する。
[第１・第２熱伝導部材の組付時]
熱伝導部材４は、第１熱伝導部材４１と第２熱伝導部材４２とを相互に組み付けて形成する。
この第１熱伝導部材４１と第２熱伝導部材４２との組付時には、図２に示すように、第１・第２両板ばね部４１ｂ，４２ｂを、軸方向で同一方向を向けるとともに、径方向に対向する第１・第２各開口部４２ｄ，４１ｄに配置して両者４１，４２を一体化する。
(Operation of Embodiment 1)
Next, the operation of the first embodiment will be described in the order of assembling the first and second heat conducting members, assembling the heat conducting members to the stator, and driving the motor.
[When assembling first and second heat conduction members]
The heat conducting member 4 is formed by assembling the first heat conducting member 41 and the second heat conducting member 42 to each other.
When the first heat conducting member 41 and the second heat conducting member 42 are assembled, as shown in FIG. 2, the first and second leaf spring portions 41b, 42b are oriented in the same direction in the axial direction, The first and second openings 42d and 41d that are opposed to each other in the radial direction are arranged so that the two 41 and 42 are integrated.
次に、熱伝導部材４をモータケース１あるいはステータ２に組み付ける場合、各板ばね部４１ｂ，４２ｂの基端部よりも先端部４１ｃ，４２ｃを、モータケース１あるいはステータ２に対して軸方向で相対移動方向配置させて組み付ける。 Next, when the heat conducting member 4 is assembled to the motor case 1 or the stator 2, the distal end portions 41 c and 42 c are arranged in the axial direction with respect to the motor case 1 or the stator 2 rather than the base end portions of the leaf spring portions 41 b and 42 b. Install in the relative movement direction.
ここで、一例として、熱伝導部材４をモータケース１に組み付けた後、ステータ２を組み付ける場合について説明する。
この場合、まず、熱伝導部材４を、モータケース１に対して図２において上方から下方へ軸方向に移動させて組み付ける。このとき、モータケース１に接触する第１板ばね部４１ｂの向きを、基端部に対して第１先端部４１ｃが熱伝導部材４に対するモータケース１の相対移動方向である上方となる向きとして組み付ける。
したがって、第１板ばね部４１ｂに対してモータケース１が第１先端部４１ｃに接触し摺動した際に、第１板ばね部４１ｂは、引っ掛かりにくい第１折曲部４１ｅ側で接触するとともに、立ち上がり傾斜角θ１を減少させる撓みやすい方向に弾性変形する。よって、その向きを逆にした場合のように、第１板ばね部４１ｂが第１先端部４１ｃの先端の角部でモータケース１に引っ掛かって抵抗となったり、立ち上がり傾斜角θ１を増大方向に変形して塑性変形が生じたりするのを抑制でき、作業性に優れる。
Here, as an example, the case where the stator 2 is assembled after the heat conducting member 4 is assembled to the motor case 1 will be described.
In this case, first, the heat conducting member 4 is assembled to the motor case 1 by moving from the upper side to the lower side in FIG. At this time, the direction of the first leaf spring portion 41 b in contact with the motor case 1 is the direction in which the first distal end portion 41 c is above the base end portion, which is the relative movement direction of the motor case 1 with respect to the heat conducting member 4. Assemble.
Therefore, when the motor case 1 contacts and slides on the first tip 41c with respect to the first leaf spring portion 41b, the first leaf spring portion 41b comes into contact with the first bent portion 41e side which is difficult to catch. Then, it is elastically deformed in a direction in which the rising inclination angle θ1 is decreased and is easily bent. Therefore, as in the case where the direction is reversed, the first leaf spring portion 41b is hooked on the motor case 1 at the corner of the tip of the first tip 41c and becomes a resistance, or the rising inclination angle θ1 is increased. Deformation and plastic deformation can be suppressed, and workability is excellent.
次に、上記のように熱伝導部材４を組み付けたモータケース１に対し、ステータ２を図２において軸方向で上方から下方へ移動させて組み付ける場合を説明する。
このとき、ステータ２に接触する第２板ばね部４２ｂは、基端部に対し第２先端部４２ｃが、ステータ２の相対移動方向である図２において下方側に配置されている。
したがって、この場合も、第２板ばね部４２ｂは、ステータ２が接触して摺動する際に、第２折曲部４２ｅ側で接触するとともに、立ち上がり傾斜角θ２を減少させる撓みやすい方向に弾性変形する。よって、その向きを逆にした場合のように、第２板ばね部４２ｂがステータ２に引っ掛かって抵抗となったり、立ち上がり傾斜角θ２を増大方向に変形して塑性変形が生じたりするのを抑制でき、作業性に優れる。
Next, the case where the stator 2 is assembled by moving the stator 2 in the axial direction in FIG.
At this time, the second leaf spring portion 42b that contacts the stator 2 has a second distal end portion 42c that is disposed on the lower side in FIG.
Accordingly, also in this case, the second leaf spring portion 42b is in contact with the second bent portion 42e when the stator 2 comes into contact and slides, and is elastic in a flexible direction that reduces the rising inclination angle θ2. Deform. Accordingly, as in the case where the direction is reversed, the second leaf spring portion 42b is prevented from being caught by the stator 2 and becoming a resistance, or the rising inclination angle θ2 is deformed in the increasing direction to suppress plastic deformation. And excellent workability.
なお、以上の説明とは逆に、熱伝導部材４をステータ２に組み付けた後に、モータケース１に組み付ける場合も、各板ばね部４１ｂ，４２ｂの向きと、ステータ２およびモータケース１の相対移動方向との関係を、上記と同様とし同様の作用を得ることができる。 Contrary to the above description, when the heat conducting member 4 is assembled to the stator 2 and then assembled to the motor case 1, the directions of the leaf spring portions 41 b and 42 b and the relative movement of the stator 2 and the motor case 1 are also included. The same effect can be obtained by making the relationship with the direction the same as above.
［ステータへの組付時］
次に、熱伝導部材４のステータ２への組付時の作用について説明する。
前述のように、ステータ２は、円弧状の鋼板２１ａを軸方向（軸心線Ｃｅに沿う方向）に複数積層して形成している。このような積層構造では、ステータ２の径方向外側の面は、鋼板２１ａごとの外径寸法の僅かなばらつきや、中心軸（軸心線Ｃｅ）に対する鋼板の僅かな位置ずれによって、外径方向の位置にずれが生じる。そのため、ステータ２の外周面には、図２に示すように、軸方向に段差が生じる。
[When assembled to the stator]
Next, the operation when the heat conducting member 4 is assembled to the stator 2 will be described.
As described above, the stator 2 is formed by stacking a plurality of arc-shaped steel plates 21a in the axial direction (direction along the axial center line Ce). In such a laminated structure, the radially outer surface of the stator 2 is in the outer radial direction due to slight variations in the outer diameter of each steel plate 21a and slight positional deviation of the steel plate with respect to the central axis (axial center line Ce). Deviation occurs in the position. Therefore, there is a step in the axial direction on the outer peripheral surface of the stator 2 as shown in FIG.
それに対して、ステータ２に接触する第２板ばね部４２ｂの第２先端部４２ｃは、周方向に幅広でステータ２と周方向に接触線を形成可能に延在された形状としている。したがって、ステータ２の外周に軸方向の凹凸を有していても、第２先端部４２ｃを、ステータ２の鋼板２１ａの外周端縁に隙間なく接触させ、第２先端部４２ｃを軸方向に延在させたものと比較して、接触面積を確保することが可能である。
これにより、ステータ２から熱伝導部材４への熱伝達性を確保し、高い放熱性を得ることができる。
On the other hand, the 2nd front-end | tip part 42c of the 2nd leaf | plate spring part 42b which contacts the stator 2 is made into the shape extended so that a contact line could be formed in the circumferential direction with the stator 2 wide. Therefore, even if the outer periphery of the stator 2 has an unevenness in the axial direction, the second tip portion 42c is brought into contact with the outer peripheral edge of the steel plate 21a of the stator 2 without a gap, and the second tip portion 42c is extended in the axial direction. It is possible to secure a contact area as compared with existing ones.
Thereby, the heat transfer property from the stator 2 to the heat conductive member 4 is ensured, and high heat dissipation can be obtained.
［モータ駆動時］
次に、モータＡの駆動時の作用を説明する。
モータＡが駆動して、ステータ２が発熱した際に、熱伝導部材４では、モータケース１に対して、第１熱伝導部材４１と第２熱伝導部材４２との２系統の熱伝達経路により並列に熱を伝達する。
すなわち、第１熱伝導部材４１では、ステータ２の熱を、第１本体部４１ａから第１板ばね部４１ｂを介して、モータケース１へ伝達可能である。
一方、第２熱伝導部材４２では、ステータ２の熱を、第２板ばね部４２ｂから第２本体部４２ａを介して、モータケース１へ伝達可能である。
[Motor drive]
Next, the operation at the time of driving the motor A will be described.
When the motor A is driven and the stator 2 generates heat, the heat conducting member 4 is connected to the motor case 1 by two heat transfer paths, that is, a first heat conducting member 41 and a second heat conducting member 42. Transfer heat in parallel.
That is, in the first heat conducting member 41, the heat of the stator 2 can be transmitted from the first main body portion 41a to the motor case 1 via the first leaf spring portion 41b.
On the other hand, in the second heat conducting member 42, the heat of the stator 2 can be transmitted from the second leaf spring portion 42b to the motor case 1 via the second main body portion 42a.
したがって、熱伝導部材４を、片持ちの板ばね部を有するもので形成しても、第１熱伝導部材４１と第２熱伝導部材４２との２つの部材を径方向に重ね合わせることにより、いずれか一方のみを使用したものと比較して、熱抵抗を半減できる。
すなわち、本実施の形態１では、各熱伝導部材４１，４２において各板ばね部４１ｂ，４２ｂを、その立ち上げのために形成された各開口部４１ｄ，４２ｄを貫通させて、それぞれ、モータケース１およびステータ２に接触させている。
よって、両熱伝導部材４１，４２の一方のみを用いた接触と比較して、板ばね部による接触個所の数を同一面積で２倍にでき、熱伝導部材４の熱伝達面積を２倍として熱抵抗を半減でき、これによりステータ２の冷却性能を向上できる。
なお、熱伝達部材４は、ステータ２を直接支持していないため、その剛性を低く抑えることができ、これにより、ステータ２の径方向の電磁加振力がモータケース１に伝わるのを抑えることができる。また、ステータ２の周方向の電磁加振力は、第２板ばね部４２ｂが、ステータ２に対して摩擦力を持って相対摺動することにより、抑制ないし減衰することができる。
Therefore, even if the heat conducting member 4 is formed with a cantilever leaf spring portion, by superimposing the two members of the first heat conducting member 41 and the second heat conducting member 42 in the radial direction, The thermal resistance can be halved compared to the case using only one of them.
That is, in the first embodiment, in each heat conducting member 41, 42, each leaf spring portion 41b, 42b is passed through each opening portion 41d, 42d formed for starting up, and the motor case is respectively provided. 1 and the stator 2.
Therefore, compared with the contact using only one of the two heat conducting members 41 and 42, the number of contact points by the leaf spring portion can be doubled in the same area, and the heat transfer area of the heat conducting member 4 is doubled. The thermal resistance can be halved, thereby improving the cooling performance of the stator 2.
In addition, since the heat transfer member 4 does not directly support the stator 2, the rigidity thereof can be kept low, thereby suppressing the electromagnetic excitation force in the radial direction of the stator 2 from being transmitted to the motor case 1. Can do. Further, the electromagnetic excitation force in the circumferential direction of the stator 2 can be suppressed or damped when the second leaf spring portion 42 b slides relative to the stator 2 with a frictional force.
（実施の形態１の効果）
以下に、実施の形態１の回転電機の効果を列挙する。
１）実施の形態１の回転電機は、
円環状のステータ２と、
このステータ２を収容するモータケース１と、
前記ステータ２の半径方向の外周面と前記モータケース１の内周面との間の隙間５に配置されて前記ステータ２と前記モータケース１とに熱的に接触する熱伝導部材４と、
を備えた回転電機であって、
前記熱伝導部材４として、内外に二重に配置した第１熱伝導部材４１と第２熱伝導部材４２とを設け、
前記第１熱伝導部材４１は、前記ステータ２に接触する第１本体部４１ａと、この第１本体部４１ａから外径方向に立ち上げられて前記モータケース１に弾性接触する第１板ばね部４１ｂと、を備え、
前記第２熱伝導部材４２は、前記モータケース１に接触する第２本体部４２ａと、この第２本体部４２ａから内径方向に立ち上げられて前記ステータ２に弾性接触する第２板ばね部４２ｂと、を備え、
前記第１本体部４１ａに、前記第２板ばね部４２ｂを径方向に貫通させる第１開口部４１ｄを設けるとともに、前記第２本体部４２ａに、前記第１板ばね部４１ｂを径方向に貫通させる第２開口部４２ｄを設けたことを特徴とする。
したがって、１つの熱伝導部材を用いた場合と比較して、同面積における熱伝達経路を増やし、熱伝導部材４の熱抵抗を低減して、ステータ２の冷却性能の向上を図ることができる。
(Effect of Embodiment 1)
The effects of the rotating electrical machine of the first embodiment are listed below.
1) The rotating electrical machine of the first embodiment is
An annular stator 2;
A motor case 1 for housing the stator 2;
A heat conducting member 4 disposed in a gap 5 between an outer peripheral surface of the stator 2 in a radial direction and an inner peripheral surface of the motor case 1 and in thermal contact with the stator 2 and the motor case 1;
A rotating electric machine with
As the heat conducting member 4, a first heat conducting member 41 and a second heat conducting member 42 that are doubled inside and outside are provided,
The first heat conducting member 41 includes a first main body portion 41 a that contacts the stator 2, and a first leaf spring portion that rises from the first main body portion 41 a in the outer diameter direction and elastically contacts the motor case 1. 41b,
The second heat conducting member 42 includes a second main body portion 42a that contacts the motor case 1, and a second leaf spring portion 42b that rises from the second main body portion 42a in the inner diameter direction and elastically contacts the stator 2. And comprising
The first body 41a is provided with a first opening 41d that allows the second leaf spring 42b to penetrate in the radial direction, and the second body 42a penetrates the first leaf spring 41b in the radial direction. The second opening 42d is provided.
Therefore, compared with the case where one heat conductive member is used, the heat transfer path in the same area can be increased, the thermal resistance of the heat conductive member 4 can be reduced, and the cooling performance of the stator 2 can be improved.
２）実施の形態１の回転電機は、
前記第１板ばね部４１ｂは、基端部を前記第１本体部４１ａに片持ち支持し、第１先端部４１ｃを外径方向に立ち上げて形成し、
前記第２板ばね部４２ｂは、基端部を前記第２本体部４２ａに片持ち支持し、第２先端部４２ｃを内径方向に立ち上げて形成したことを特徴とする。
したがって、熱伝導部材４が、接触面積の確保が難しい片持ちの板ばね部を有するものであっても、第１・第２両熱伝導部材４１，４２を径方向に重ね合わせて配置することによって、上記１）の効果を得ることができる。
2) The rotating electrical machine of the first embodiment is
The first leaf spring portion 41b is formed by cantilevering the base end portion on the first main body portion 41a and raising the first tip end portion 41c in the outer diameter direction,
The second leaf spring part 42b is formed by cantilevering the base end part on the second main body part 42a and raising the second tip part 42c in the inner diameter direction.
Therefore, even if the heat conducting member 4 has a cantilevered leaf spring portion in which it is difficult to ensure the contact area, both the first and second heat conducting members 41 and 42 are arranged so as to overlap each other in the radial direction. Thus, the effect 1) can be obtained.
３）実施の形態１の回転電機は、
第１・第２各板ばね部４１ｂ，４２ｂは、前記基端部から前記ステータ２の軸方向に沿う方向に向かって延びつつ第１・第２先端部４１ｃ，４２ｃを接触対象であるモータケース１およびステータ２に向けて軸直交方向に傾斜させ、かつ、第１・第２両板ばね部４１ｂ，４２ｂの傾斜方向を同一方向に沿う方向に向けて前記第１、第２両熱伝導部材４１，４２を組み付けたことを特徴とする。
したがって、熱伝導部材４をモータケース１やステータ２に組み付ける工程では、第１・第２両板ばね部４１ｂ，４２ｂを接触対象と摺動させる際に、各板ばね部４１ｂ，４２ｂが引っ掛かりにくく、かつ撓ませやすい方向に摺動させることが可能である。これにより、組付作業性を向上させ、生産性を向上させることができる。
3) The rotating electrical machine of the first embodiment is
The first and second leaf spring portions 41b and 42b extend from the base end portion in a direction along the axial direction of the stator 2, and the first and second distal end portions 41c and 42c are contact objects. The first and second heat conducting members are inclined in the direction perpendicular to the axis 1 and the stator 2, and the first and second leaf spring portions 41b and 42b are inclined in the same direction. 41 and 42 are assembled.
Therefore, in the process of assembling the heat conducting member 4 to the motor case 1 or the stator 2, when the first and second leaf spring portions 41b and 42b are slid against the contact object, the leaf spring portions 41b and 42b are not easily caught. And can be slid in a direction in which it can be easily bent. Thereby, assembly workability | operativity can be improved and productivity can be improved.
４）実施の形態１の回転電機は、
前記ステータ２を、鋼板２１ａを積層して形成し、
前記ステータ２の外周に接触する前記第２板ばね部４２ｂの前記第２先端部４２ｃを、周方向に延在させたことを特徴とする。
したがって、ステータ２の外周面に軸方向に凹凸が生じていても、第２先端部４２ｃを、ステータ２の鋼板２１ａの外周端縁に隙間なく接触させ、第２先端部４２ｃを軸方向に延在させたものと比較して、接触面積を確保することが可能である。
これにより、ステータ２から熱伝導部材４への熱伝達性を確保し、高い放熱性を得ることができる。
4) The rotating electrical machine of the first embodiment is
The stator 2 is formed by laminating steel plates 21a,
The second tip end portion 42c of the second leaf spring portion 42b that contacts the outer periphery of the stator 2 extends in the circumferential direction.
Therefore, even if the outer peripheral surface of the stator 2 is uneven in the axial direction, the second tip 42c is brought into contact with the outer peripheral edge of the steel plate 21a of the stator 2 without any gap, and the second tip 42c is extended in the axial direction. It is possible to secure a contact area as compared with existing ones.
Thereby, the heat transfer property from the stator 2 to the heat conductive member 4 is ensured, and high heat dissipation can be obtained.
（他の実施の形態）
次に、他の実施の形態の回転電機について説明する。
なお、他の実施の形態を説明するのにあたり、実施の形態１と共通する構成には実施の形態１と同じ符号を付して説明を省略し、実施の形態１との相違点のみ説明する。
(Other embodiments)
Next, a rotating electrical machine according to another embodiment will be described.
In the description of the other embodiments, the same reference numerals as those in the first embodiment are assigned to the same components as those in the first embodiment, and the description thereof is omitted. Only the differences from the first embodiment will be described. .
（実施の形態２）
実施の形態２では、図５に示す第１熱伝導部材２４１および第２熱伝導部材２４２に、第１・第２両熱伝導部材２４１，２４２を、モータケース１のステータ２を挿入する挿入口１３の端縁部に固定する固定手段としてのフランジ２４１ｆ，２４２ｆを設けた。
さらに、実施の形態２では、各フランジ２４１ｆ，２４２ｆに、第１熱伝導部材２４１と第２熱伝導部材２４２との相対位置を位置決めする位置決め手段としてのピン２４２ｇと、挿通穴２４１ｇとを設けた。
すなわち、各フランジ２４１ｆ，２４２ｆは、第１・第２各熱伝導部材２４１，２４２の第１・第２各本体部４１ａ，４２ａを、外径方向に折り曲げて形成している。
したがって、熱伝導部材４をモータケース１に組み付ける際に、第１・第２両熱伝導部材２４１，２４２を内外に一体に組み付けた状態で、モータケース１の挿入口１３から挿入して、両フランジ２４１ｆ，２４２ｆを、挿入口１３の周縁部に係合させる。
これにより、第１・第２両熱伝導部材２４１，２４２を、モータケース１に固定することができる。
よって、このように第１・第２両熱伝導部材２４１，２４２をモータケース１に仮固定した状態で、モータケース１の挿入口１３にステータ２を挿入することができ、作業性に優れる。
(Embodiment 2)
In the second embodiment, the first and second heat conducting members 241 and 242 are inserted into the first heat conducting member 241 and the second heat conducting member 242 shown in FIG. Flanges 241f and 242f as fixing means for fixing to the 13 edge portions were provided.
Furthermore, in the second embodiment, each flange 241f, 242f is provided with a pin 242g as a positioning means for positioning the relative position between the first heat conducting member 241 and the second heat conducting member 242, and an insertion hole 241g. .
That is, the flanges 241f and 242f are formed by bending the first and second main body portions 41a and 42a of the first and second heat conducting members 241 and 242 in the outer diameter direction.
Therefore, when the heat conducting member 4 is assembled to the motor case 1, both the first and second heat conducting members 241 and 242 are integrally assembled inside and outside and inserted from the insertion port 13 of the motor case 1. The flanges 241 f and 242 f are engaged with the peripheral edge portion of the insertion port 13.
Thereby, both the first and second heat conducting members 241 and 242 can be fixed to the motor case 1.
Therefore, the stator 2 can be inserted into the insertion port 13 of the motor case 1 in a state where the first and second heat conducting members 241 and 242 are temporarily fixed to the motor case 1 in this way, and the workability is excellent.
また、第２熱伝導部材２４２のフランジ２４２ｆには、軸方向にピン２４２ｇを立設し、第１熱伝導部材２４１のフランジ２４１ｆには、ピン２４２ｇを挿通可能な挿通穴２４１ｇを形成している。したがって、ピン２４２ｇを挿通穴２４１ｇに挿通した状態では、両熱伝導部材２４１，２４２の周方向相対位置および径方向相対位置を位置決めすることができる。
この位置決め状態では、第１・第２各板ばね部４１ｂ，４２ｂが、第１・第２各開口部４２ｄ，４１ｄを径方向に貫通するとともに、図４に示すように、各開口部４２ｄ，４１ｄの内周縁部から周方向に離間して配置される。
Further, a pin 242g is erected in the axial direction in the flange 242f of the second heat conducting member 242, and an insertion hole 241g into which the pin 242g can be inserted is formed in the flange 241f of the first heat conducting member 241. . Therefore, in the state where the pin 242g is inserted into the insertion hole 241g, the circumferential relative position and the radial relative position of both the heat conducting members 241 and 242 can be positioned.
In this positioning state, the first and second leaf springs 41b and 42b penetrate the first and second openings 42d and 41d in the radial direction, and as shown in FIG. It is spaced apart from the inner peripheral edge of 41d in the circumferential direction.
このように、第１・第２両熱伝導部材２４１，２４２の相対位置が規制されるため、モータＡに衝撃が加わっても、両熱伝導部材２４１，２４２の相対位置がずれることが無い。よって、この相対位置がずれて第１・第２両熱伝導部材２４１，２４２の第１・第２両板ばね部４１ｂ，４２ｂと第１・第２両開口部４２ｄ，４１ｄとが接触し、モータＡの駆動時にその接触部分で異音が発生するのを防止できる。 In this way, since the relative positions of the first and second heat conducting members 241 and 242 are regulated, even if an impact is applied to the motor A, the relative positions of the two heat conducting members 241 and 242 do not shift. Therefore, this relative position shifts, and the first and second leaf spring portions 41b and 42b of the first and second heat conducting members 241 and 242 are in contact with the first and second openings 42d and 41d, It is possible to prevent abnormal noise from being generated at the contact portion when the motor A is driven.
（実施の形態２の効果）
実施の形態２の回転電機では、上述の１）〜４）の効果に加えて、下記の効果を得ることができる。
2-1）実施の形態２の回転電機は、
前記第１熱伝導部材２４１と前記第２熱伝導部材２４２とに、両者の相対位置を位置決めする位置決め手段としてのピン２４２ｇおよび挿通穴２４１ｇを設けたことを特徴とする。
したがって、モータＡに衝撃が加わっても、第１・第２両熱伝導部材２４１，２４２の相対位置がずれることが無く、モータＡの駆動時に、両者の相対位置ずれによる接触部分で異音が発生するのを防止できる。
(Effect of Embodiment 2)
In the rotating electrical machine of the second embodiment, in addition to the effects 1) to 4) described above, the following effects can be obtained.
2-1) The rotating electrical machine of the second embodiment is
The first heat conducting member 241 and the second heat conducting member 242 are provided with pins 242g and insertion holes 241g as positioning means for positioning the relative positions of the two.
Therefore, even when an impact is applied to the motor A, the relative positions of the first and second heat conducting members 241 and 242 are not displaced, and when the motor A is driven, abnormal noise is generated at the contact portion due to the relative positional deviation between the two. It can be prevented from occurring.
2-2）実施の形態２の回転電機は、
前記第１熱伝導部材２４１および前記第２熱伝導部材２４２に、両熱伝導部材２４１，２４２を、前記モータケース１の前記ステータ２を挿入する挿入口１３の端縁部に固定する固定手段としてのフランジ２４１ｆ，２４２ｆを設けたことを特徴とする。
したがって、熱伝導部材４をモータケース１に組み付ける際に、両フランジ２４１ｆ，２４２ｆを、挿入口１３の周縁部に係合させて、両熱伝導部材２４１，２４２を、モータケース１に固定することができる。
よって、このように第１・第２両熱伝導部材２４１，２４２をモータケース１に仮固定した状態で、モータケース１の挿入口１３にステータ２を挿入することができ、作業性に優れる。
2-2) The rotating electrical machine of the second embodiment is
Fixing means for fixing both the heat conducting members 241 and 242 to the first heat conducting member 241 and the second heat conducting member 242 to the end edge portion of the insertion port 13 into which the stator 2 of the motor case 1 is inserted. The flanges 241f and 242f are provided.
Accordingly, when the heat conducting member 4 is assembled to the motor case 1, both the heat conducting members 241 and 242 are fixed to the motor case 1 by engaging both flanges 241 f and 242 f with the peripheral edge of the insertion port 13. Can do.
Therefore, the stator 2 can be inserted into the insertion port 13 of the motor case 1 in a state where the first and second heat conducting members 241 and 242 are temporarily fixed to the motor case 1 in this way, and the workability is excellent.
以上、本発明の回転電機を実施の形態に基づき説明してきたが、具体的な構成については、この実施の形態に限られるものではなく、特許請求の範囲の各請求項に係る発明の要旨を逸脱しない限り、設計の変更や追加等は許容される。 As mentioned above, although the rotary electric machine of this invention was demonstrated based on embodiment, about a concrete structure, it is not restricted to this embodiment, The summary of the invention which concerns on each claim of a claim Unless it deviates, design changes and additions are allowed.
例えば、実施の形態では、板ばね部として、本体部を基端として先端部を立ち上げた形状のものを複数設けたものを示したが、これに限定されるものではない。例えば、板ばね部として、本体部から、円弧状に湾曲させたものや、この湾曲形状を軸方向に連続させた波状のものなど、他の形状のものを用いるようにしてもよい。
また、板ばね部として、実施の形態にて示したように、本体部から立ち上げた形状のものを用いる場合にも、実施の形態にて示した形状とは異なる形状としてもよい。例えば、板ばね部の立ち上げを、湾曲形状に立ち上げてもよい。あるいは、先端部を丸めた形状として、接触対象側に対して、より引っ掛かりにくい形状としてもよい。
また、各開口部の形状も、板ばね部を径方向に貫通可能な形状であれば実施の形態で示した矩形形状に限定されるものではない。
For example, in the embodiment, the leaf spring portion is provided with a plurality of shapes in which the tip portion is raised with the main body portion as the base end. However, the present invention is not limited to this. For example, as the leaf spring portion, those having other shapes such as those curved from the main body portion in an arc shape, or wave shapes obtained by continuing this curved shape in the axial direction may be used.
In addition, as shown in the embodiment, the leaf spring portion may have a shape different from the shape shown in the embodiment even when a shape raised from the main body portion is used. For example, the plate spring portion may be raised in a curved shape. Or it is good also as a shape which is harder to catch with respect to a contact object side as a shape which rounded up the tip part.
Further, the shape of each opening is not limited to the rectangular shape shown in the embodiment as long as the shape can penetrate the leaf spring portion in the radial direction.
また、第１熱伝導部材と第２熱伝導部材との相対位置を位置決めする位置決め手段として、ピンと挿通穴を示したが、これに限定されない。例えば、位置決め手段としては、少なくとも、両熱伝導部材の周方向の相対位置を規定できれば良く、その場合、径方向に延びる突起と溝とを係合させて位置決めするようにしてもよい。また、実施の形態で示したピンを用いる場合であっても、挿通穴に代えてフランジの外周まで延在させた径方向の溝としてもよい。この場合、第１熱伝達部材と第２熱伝達部材とを組み付ける際に、ピンを溝に挿入しやすく組付作業性に優れる。 Moreover, although the pin and the insertion hole were shown as a positioning means which positions the relative position of a 1st heat conductive member and a 2nd heat conductive member, it is not limited to this. For example, as the positioning means, it is sufficient that at least the relative positions in the circumferential direction of both heat conducting members can be defined. In that case, the protrusions and the grooves extending in the radial direction may be engaged and positioned. Further, even when the pin shown in the embodiment is used, a radial groove extending to the outer periphery of the flange may be used instead of the insertion hole. In this case, when assembling the first heat transfer member and the second heat transfer member, it is easy to insert the pin into the groove, and the assembly workability is excellent.
また、第１熱伝導部材および第２熱伝導部材をケースに固定する固定手段としては、フランジを示したが、これに限定されない。例えば、ケース側に穴や溝を設けておき、各熱伝導部材に設けたピンや突起を、その穴や溝に挿入して固定するようにしてもよい。
また、実施の形態では、ステータをモータケースに支持する構造として、マウント部材をモータケースにボルト止めする例を示したが、これに限定さない。要は、ステータをモータケースに対してその径方向外周を離間させ、ある程度の径方向および周方向への加振力を吸収可能な支持であれば、片持ちに限らず、軸方向の両端で支持してもよい。
Moreover, although the flange was shown as a fixing means which fixes the 1st heat conductive member and the 2nd heat conductive member to a case, it is not limited to this. For example, a hole or a groove may be provided on the case side, and a pin or a protrusion provided on each heat conducting member may be inserted and fixed in the hole or groove.
In the embodiment, an example in which the mount member is bolted to the motor case as a structure for supporting the stator on the motor case has been described. However, the present invention is not limited to this. In short, the stator is not limited to a cantilever, but can be supported at both ends in the axial direction as long as the stator can be separated from the motor case in the radial direction and can absorb a certain amount of radial and circumferential excitation force. You may support.
１ モータケース
２ ステータ
４ 熱伝導部材
５ 隙間
２１ａ 鋼板
４１ 第１熱伝導部材
４１ａ 第１本体部
４１ｂ 第１板ばね部
４１ｃ 第１先端部
４１ｄ 第１開口部
４１ｅ 第１折曲部
４２ 第２熱伝導部材
４２ａ 第２本体部
４２ｂ 第２板ばね部
４２ｃ 第２先端部
４２ｄ 第２開口部
４２ｅ 第２折曲部
２４１ 第１熱伝導部材
２４１ｆ フランジ（固定手段）
２４１ｇ 挿通穴（位置決め手段）
２４２ 第２熱伝導部材
２４２ｆ フランジ（固定手段）
２４２ｇ ピン（位置決め手段）
Ａ モータ（回転電機）
DESCRIPTION OF SYMBOLS 1 Motor case 2 Stator 4 Heat conduction member 5 Crevice 21a Steel plate 41 1st heat conduction member 41a 1st main-body part 41b 1st leaf | plate spring part 41c 1st front-end | tip part 41d 1st opening part 41e 1st bending part 42 2nd heat Conductive member 42a Second body portion 42b Second leaf spring portion 42c Second tip portion 42d Second opening 42e Second bent portion 241 First heat conducting member 241f Flange (fixing means)
241g Insertion hole (positioning means)
242 Second heat conducting member 242f Flange (fixing means)
242g pin (positioning means)
A motor (rotary electric machine)
Claims (6)
このステータを収容するケースと、
前記ステータの半径方向の外周面と前記ケースの内周面との間の隙間に配置されて前記ステータと前記ケースとに熱的に接触する熱伝導部材と、
を備えた回転電機であって、
前記熱伝導部材として、内外に二重に配置した第１熱伝導部材と第２熱伝導部材とを設け、
前記第１熱伝導部材は、前記ステータに接触する第１本体部と、この第１本体部から外径方向に立ち上げられて前記ケースに弾性接触する第１板ばね部と、を備え、
前記第２熱伝導部材は、前記ケースに接触する第２本体部と、この第２本体部から内径方向に立ち上げられて前記ステータに弾性接触する第２板ばね部と、を備え、
前記第１本体部に、前記第２板ばね部を径方向に貫通させる第１開口部を設ける一方で、前記第２本体部に、前記第１板ばね部を径方向に貫通させる第２開口部を設けたことを特徴とする回転電機。 An annular stator;
A case for accommodating the stator;
A heat conducting member disposed in a gap between the outer peripheral surface in the radial direction of the stator and the inner peripheral surface of the case and in thermal contact with the stator and the case;
A rotating electric machine with
As the heat conducting member, a first heat conducting member and a second heat conducting member arranged in duplicate inside and outside are provided,
The first heat conducting member includes a first main body portion that contacts the stator, and a first leaf spring portion that is raised from the first main body portion in an outer diameter direction and elastically contacts the case,
The second heat conducting member includes a second main body portion that comes into contact with the case, and a second leaf spring portion that is raised from the second main body portion in an inner diameter direction and elastically contacts the stator,
The first body portion is provided with a first opening portion that allows the second leaf spring portion to pass through in the radial direction, while the second body portion includes a second opening that passes through the first leaf spring portion in the radial direction. A rotating electric machine characterized in that a portion is provided.
前記第１板ばね部は、基端部を前記第１本体部に片持ち支持し、先端部を外径方向に立ち上げて形成し、
前記第２板ばね部は、基端部を前記第２本体部に片持ち支持し、先端部を内径方向に立ち上げて形成したことを特徴とする回転電機。 In the rotating electrical machine according to claim 1,
The first leaf spring portion is formed by cantilevering the base end portion on the first main body portion and raising the tip end portion in the outer diameter direction,
The rotary electric machine is characterized in that the second leaf spring portion is formed by cantilevering a base end portion on the second main body portion and raising a tip end portion in an inner diameter direction.
各板ばね部は、前記基端部から前記ステータの軸方向に沿う方向に向かって延びつつ前記先端部を接触対象に向けて軸直交方向に傾斜させ、かつ、両板ばね部の傾斜方向を同一方向に沿わせて前記第１、第２両熱伝導部材を組み付けたことを特徴とする回転電機。 The rotating electrical machine according to claim 2,
Each leaf spring portion extends from the base end portion in a direction along the axial direction of the stator and inclines the distal end portion in the direction perpendicular to the axis toward the contact target, and the inclination direction of both leaf spring portions. A rotating electric machine characterized in that the first and second heat conducting members are assembled along the same direction.
前記ステータを、鋼板を軸方向に積層して形成し、
前記ステータの外周に接触する前記第２板ばね部の前記先端部を、周方向に延在させたことを特徴とする回転電機。 In the rotating electrical machine according to claim 2 or claim 3 ,
The stator is formed by laminating steel plates in the axial direction,
A rotating electrical machine characterized in that the tip end portion of the second leaf spring portion contacting the outer periphery of the stator extends in the circumferential direction.
前記第１熱伝導部材と前記第２熱伝導部材とに、両者の相対位置を位置決めする位置決め手段を設けたことを特徴とする回転電機。 In the rotating electrical machine according to any one of claims 1 to 3,
A rotating electrical machine characterized in that positioning means for positioning a relative position between the first heat conducting member and the second heat conducting member is provided.
前記第１熱伝導部材および前記第２熱伝導部材に、両部材を、前記ケースの前記ステータを挿入する挿入口の端縁部に固定する固定手段を設けたことを特徴とする回転電機。
In the rotating electrical machine according to any one of claims 1 to 5,
A rotating electrical machine, wherein the first heat conducting member and the second heat conducting member are provided with fixing means for fixing both members to an end edge portion of an insertion port into which the stator of the case is inserted.
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