JP5799834B2 - Electrical connection structure, sealing device, and inverter-integrated motor - Google Patents

Electrical connection structure, sealing device, and inverter-integrated motor Download PDF

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JP5799834B2
JP5799834B2 JP2012016654A JP2012016654A JP5799834B2 JP 5799834 B2 JP5799834 B2 JP 5799834B2 JP 2012016654 A JP2012016654 A JP 2012016654A JP 2012016654 A JP2012016654 A JP 2012016654A JP 5799834 B2 JP5799834 B2 JP 5799834B2
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cable
inner diameter
diameter portion
hole
seal member
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JP2013158143A (en
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宣幸 山下
宣幸 山下
太一 岡
太一 岡
和彦 冨田
和彦 冨田
敬浩 二ツ森
敬浩 二ツ森
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Hitachi Metals Ltd
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本発明は、筐体に形成された貫通孔を介して電気的な接続を行う電気接続構造、シール装置、及びインバータ一体型モータに関する。   The present invention relates to an electrical connection structure that performs electrical connection through a through-hole formed in a housing, a seal device, and an inverter-integrated motor.

従来、例えば車両用駆動装置として、インバータとモータが一体化されたインバータ一体型モータが知られている（例えば、特許文献１参照）。   Conventionally, an inverter-integrated motor in which an inverter and a motor are integrated is known as, for example, a vehicle drive device (see, for example, Patent Document 1).

特許文献１に記載の車両用駆動装置は、インバータケース内に収容されたパワーモジュールと、モータケース内に収容されたモータのステータ部とを、複数のバスバー及びプラグ部材からなる配線部材で電気的に接続している。このプラグ部材は、インバータケース及びモータケースに形成された貫通孔を挿通する保持部材に保持されている。保持部材の外面とインバータケース及びモータケースの貫通孔の内面との間には、それぞれ環状のシール部材が配置されている。これらのシール部材は、インバータケース及びモータケースを密封し、ケース内に水分等が浸入することを抑制している。   In the vehicle drive device described in Patent Document 1, a power module housed in an inverter case and a stator portion of a motor housed in a motor case are electrically connected by a wiring member including a plurality of bus bars and plug members. Connected to. The plug member is held by a holding member that is inserted through a through hole formed in the inverter case and the motor case. An annular seal member is disposed between the outer surface of the holding member and the inner surfaces of the through holes of the inverter case and the motor case. These sealing members seal the inverter case and the motor case, and prevent moisture and the like from entering the case.

特開２００７−２２１９６２号公報JP 2007-221962 A

上記のように構成されたインバータ一体型モータにおいて、インバータケースの貫通孔の中心軸とモータケースとの貫通孔の中心軸とが一致している場合には、シール部材によるシール性が保たれ、ケース内に水分等が浸入することを防ぎ得る。しかし、貫通孔の寸法精度やインバータケースとモータケースとの組付精度が十分でなく、２つの貫通孔の軸心にずれが生じている場合には、保持部材が傾き、これに伴い、シール部材が傾いたまま貫通孔に配置されてしまい、シール性が低下するおそれがある。   In the inverter-integrated motor configured as described above, when the central axis of the through hole of the inverter case and the central axis of the through hole of the motor case coincide with each other, the sealing performance by the seal member is maintained, It is possible to prevent moisture and the like from entering the case. However, if the dimensional accuracy of the through hole and the assembly accuracy between the inverter case and the motor case are not sufficient, and the shaft center of the two through holes is misaligned, the holding member is tilted. The member may be disposed in the through hole while being tilted, and the sealing performance may be deteriorated.

そこで、本発明は、２つの筐体にそれぞれ形成された２つの貫通孔を介して電気的な接続を行う場合に、２つの貫通孔の軸心にずれが生じても、シール性を保つことが可能な電気接続構造、シール装置、及びインバータ一体型モータを提供することを目的とする。   Therefore, the present invention maintains a sealing property even when a deviation occurs in the axial center of the two through-holes when the electrical connection is made via the two through-holes respectively formed in the two housings. It is an object of the present invention to provide an electrical connection structure, a sealing device, and an inverter-integrated motor capable of performing the above.

本発明は、上記課題を解決することを目的として、第１の筐体の内部に収容された第１の内部装置と、前記第１の筐体に隣接して配置された第２の筐体の内部に収容された第２の内部装置とを、前記第１の筐体に形成された第１の貫通孔及び前記第２の筐体に形成された第２の貫通孔を介して電気的に接続する電気接続構造であり、前記第１の貫通孔及び前記第２の貫通孔に挿通されるケーブルと、前記第１の貫通孔の内面と前記ケーブルの外面との間をシールする第１のシール部材と、前記第２の貫通孔の内面と前記ケーブルの外面との間をシールする第２のシール部材と、前記ケーブルの中心軸に沿って前記第１のシール部材と前記第２のシール部材との間に配置され、前記ケーブルを挿通させる中空のスペーサとを備え、前記スペーサは、前記第１のシール部材側に配置された第１部材と前記第２のシール部材側に配置された第２部材とを有し、前記第１部材と前記第２部材とが、前記ケーブルの中心軸に対して交差する方向に相対移動可能であり、前記スペーサは、前記第１部材及び第２部材の少なくとも一方に、互いに内径が異なる小内径部及び大内径部を有し、前記小内径部は、その内面が前記ケーブルの外面に接することにより、当該小内径部内における前記ケーブルの屈曲を規制する内径を有し、前記大内径部は、その内面と前記ケーブルの外面との間に隙間が形成されることにより、当該大内径部内における前記ケーブルの屈曲を許容する内径を有し、前記大内径部が、前記小内径部よりも、前記第１部材と前記第２部材との対向端面側に配置されている、電気接続構造を提供する。 In order to solve the above-mentioned problems, the present invention provides a first internal device housed in a first housing and a second housing disposed adjacent to the first housing. A second internal device housed inside the first housing through a first through hole formed in the first housing and a second through hole formed in the second housing. A first connection that seals between a cable inserted through the first through-hole and the second through-hole, and an inner surface of the first through-hole and an outer surface of the cable. A second sealing member that seals between the inner surface of the second through hole and the outer surface of the cable, and the first sealing member and the second sealing member along a central axis of the cable. A hollow spacer that is arranged between the seal member and allows the cable to pass therethrough, and the spacer A first member disposed on the first seal member side and a second member disposed on the second seal member side, wherein the first member and the second member are connected to the cable. Ri movable relative der in a direction intersecting with the central axis, the spacer, the at least one of the first member and the second member has a small diameter portion having different inner diameters and large inner diameter portion to each other, the small The inner diameter portion has an inner diameter that regulates the bending of the cable in the small inner diameter portion by contacting the outer surface of the cable with the inner surface, and the large inner diameter portion is between the inner surface and the outer surface of the cable. By forming a gap, the large inner diameter portion has an inner diameter that allows bending of the cable, and the large inner diameter portion is opposed to the first member and the second member than the small inner diameter portion. are arranged on the end face side, electrical To provide a connection structure.

また、前記第１の貫通孔の内径と前記第２の貫通孔の内径とが異なるとよい。   The inner diameter of the first through hole may be different from the inner diameter of the second through hole.

また、上記課題を解決することを目的として、第１の筐体の内部に収容された第１の内部装置と、前記第１の筐体に隣接して配置された第２の筐体の内部に収容された第２の内部装置とを、前記第１の筐体に形成された第１の貫通孔及び前記第２の筐体に形成された第２の貫通孔を介して電気的に接続する電気接続構造であり、前記第１の貫通孔及び前記第２の貫通孔に挿通されるケーブルと、前記第１の貫通孔の内面と前記ケーブルの外面との間をシールする第１のシール部材と、前記第２の貫通孔の内面と前記ケーブルの外面との間をシールする第２のシール部材と、前記ケーブルの中心軸に沿って前記第１のシール部材と前記第２のシール部材との間に配置され、前記ケーブルを挿通させる中空のスペーサとを備え、前記スペーサは、前記第１のシール部材側に配置された第１部材と前記第２のシール部材側に配置された第２部材とを有し、前記第１部材と前記第２部材とが、前記ケーブルの中心軸に対して交差する方向に相対移動可能であり、前記スペーサは、前記第１部材及び前記第２部材の一方に形成された凹部に、前記第１部材及び前記第２部材の他方に形成された凸部が係合することにより、前記第１部材及び前記第２部材の互いに離間する方向への移動が規制されている、電気接続構造を提供する。 For the purpose of solving the above problem, the first internal device housed in the first housing and the interior of the second housing disposed adjacent to the first housing Electrically connected to the second internal device housed in the first housing through the first through hole formed in the first housing and the second through hole formed in the second housing. A first seal that seals between a cable inserted through the first through-hole and the second through-hole, and an inner surface of the first through-hole and an outer surface of the cable. A member, a second seal member that seals between the inner surface of the second through hole and the outer surface of the cable, and the first seal member and the second seal member along a central axis of the cable And a hollow spacer that allows the cable to pass therethrough, A first member disposed on the first seal member side and a second member disposed on the second seal member side, wherein the first member and the second member are the center of the cable. The spacer is relatively movable in a direction intersecting the axis, and the spacer is formed in the recess formed in one of the first member and the second member, and on the other of the first member and the second member. Provided is an electrical connection structure in which movement of the first member and the second member in a direction away from each other is restricted by engagement of the convex portions.

また、上記課題を解決することを目的として、ケーブルを挿通させる第１及び第２のシール部材と、前記ケーブルの中心軸に沿って前記第１のシール部材と前記第２のシール部材との間に配置され、前記ケーブルを挿通させる中空のスペーサとを備え、前記スペーサは、前記第１のシール部材側に配置された第１部材と前記第２のシール部材側に配置された第２部材とを有し、前記第１部材と前記第２部材とが、前記ケーブルの中心軸に対して交差する方向に相対移動可能であり、前記スペーサは、前記第１部材及び第２部材の少なくとも一方に、互いに内径が異なる小内径部及び大内径部を有し、前記小内径部は、その内面が前記ケーブルの外面に接することにより、当該小内径部内における前記ケーブルの屈曲を規制する内径を有し、前記大内径部は、その内面と前記ケーブルの外面との間に隙間が形成されることにより、当該大内径部内における前記ケーブルの屈曲を許容する内径を有し、前記大内径部が、前記小内径部よりも、前記第１部材と前記第２部材との対向端面側に配置されている、シール装置を提供する。
また、上記課題を解決することを目的として、ケーブルを挿通させる第１及び第２のシール部材と、前記ケーブルの中心軸に沿って前記第１のシール部材と前記第２のシール部材との間に配置され、前記ケーブルを挿通させる中空のスペーサとを備え、前記スペーサは、前記第１のシール部材側に配置された第１部材と前記第２のシール部材側に配置された第２部材とを有し、前記第１部材と前記第２部材とが、前記ケーブルの中心軸に対して交差する方向に相対移動可能であり、前記スペーサは、前記第１部材及び前記第２部材の一方に形成された凹部に、前記第１部材及び前記第２部材の他方に形成された凸部が係合することにより、前記第１部材及び前記第２部材の互いに離間する方向への移動が規制されている、シール装置を提供する。 For the purpose of solving the above-mentioned problem, the first and second sealing members through which the cable is inserted, and between the first sealing member and the second sealing member along the central axis of the cable. A hollow spacer through which the cable is inserted, and the spacer includes a first member disposed on the first seal member side and a second member disposed on the second seal member side. has, with the first member and the second member, Ri movable relative der in a direction intersecting with the central axis of the cable, the spacer, at least one of said first and second members The small inner diameter portion has an inner diameter that regulates the bending of the cable in the small inner diameter portion when the inner surface is in contact with the outer surface of the cable. And before The large inner diameter portion has an inner diameter that allows bending of the cable in the large inner diameter portion by forming a gap between the inner surface and the outer surface of the cable, and the large inner diameter portion is the small inner diameter. Provided is a sealing device that is arranged on the opposite end face side of the first member and the second member rather than the portion .
For the purpose of solving the above-mentioned problem, the first and second sealing members through which the cable is inserted, and between the first sealing member and the second sealing member along the central axis of the cable. A hollow spacer through which the cable is inserted, and the spacer includes a first member disposed on the first seal member side and a second member disposed on the second seal member side. The first member and the second member are movable relative to each other in a direction intersecting the central axis of the cable, and the spacer is disposed on one of the first member and the second member. When the convex portion formed on the other of the first member and the second member is engaged with the formed concave portion, movement of the first member and the second member in a direction away from each other is restricted. Provide a sealing device .

また、上記課題を解決することを目的として、直流電力を交流電力に変換する電力変換装置、及び前記電力変換装置を収容するインバータケースを有するインバータと、前記電力変換装置によって変換された前記交流電力によって磁力を発生する固定子、及び前記固定子を収容し、前記インバータケースに一体化されたモータケースを有するモータと、前記電力変換装置と前記固定子とを、前記インバータケースに形成された第１の貫通孔及び前記モータケースに形成された第２の貫通孔を介して電気的に接続する接続部材とを備え、前記接続部材は、ケーブルと、前記第１の貫通孔の内面と前記ケーブルの外面との間をシールする第１のシール部材と、前記第２の貫通孔の内面と前記ケーブルの外面との間をシールする第２のシール部材と、前記ケーブルの中心軸に沿って前記第１のシール部材と前記第２のシール部材との間に配置され、前記ケーブルを挿通させる中空のスペーサとを有し、前記スペーサは、前記第１のシール部材側に配置された第１部材と前記第２のシール部材側に配置された第２部材とを有し、前記第１部材と前記第２部材とが、前記ケーブルの中心軸に対して交差する方向に相対移動可能であり、前記スペーサは、前記第１部材及び第２部材の少なくとも一方に、互いに内径が異なる小内径部及び大内径部を有し、前記小内径部は、その内面が前記ケーブルの外面に接することにより、当該小内径部内における前記ケーブルの屈曲を規制する内径を有し、前記大内径部は、その内面と前記ケーブルの外面との間に隙間が形成されることにより、当該大内径部内における前記ケーブルの屈曲を許容する内径を有し、前記大内径部が、前記小内径部よりも、前記第１部材と前記第２部材との対向端面側に配置されている、インバータ一体型モータを提供する。
Moreover, in order to solve the said subject, the inverter which has the power converter device which converts direct-current power into alternating current power, the inverter case which accommodates the said power converter device, and the said alternating current power converted by the said power converter device A stator that generates magnetic force by the motor, a motor that houses the stator and has a motor case integrated with the inverter case, and the power converter and the stator formed in the inverter case. And a connection member electrically connected via a second through hole formed in the motor case, wherein the connection member includes a cable, an inner surface of the first through hole, and the cable. A first sealing member that seals between the outer surface of the second through-hole, and a second sealing member that seals between the inner surface of the second through hole and the outer surface of the cable A hollow spacer that is disposed between the first seal member and the second seal member along the central axis of the cable and allows the cable to pass therethrough, wherein the spacer includes the first seal A first member disposed on the member side and a second member disposed on the second seal member side, wherein the first member and the second member intersect the central axis of the cable. movable relative der in a direction is, the spacer, the at least one of the first member and the second member has a small diameter portion having different inner diameters and large inner diameter portion to each other, the small-inner-diameter portion has its inner surface Has an inner diameter that regulates bending of the cable in the small inner diameter portion by contacting the outer surface of the cable, and the large inner diameter portion has a gap formed between the inner surface and the outer surface of the cable. The large inner diameter Has an inner diameter that allows the bending of the cable in the inner, the large inner diameter portion than said small diameter portion is disposed on the opposite end face of said second member and said first member, inverter-integrated Provide a motor.

本発明に係る電気接続構造、シール装置、及びインバータ一体型モータによれば、２つの筐体にそれぞれ形成された貫通孔を介して電気的な接続を行う場合に、貫通孔の軸心にずれが生じても、シール部材によるシール性を保つことが可能となる。   According to the electrical connection structure, the sealing device, and the inverter-integrated motor according to the present invention, when electrical connection is made through the through holes formed in the two housings, the center of the through hole is displaced. Even if this occurs, the sealing performance by the sealing member can be maintained.

本発明の第１の実施の形態に係るインバータ一体型モータを示す概略図である。It is the schematic which shows the inverter integrated motor which concerns on the 1st Embodiment of this invention. 接続部材の構成例を示す外観図である。It is an external view which shows the structural example of a connection member. インバータケースの貫通孔及びモータケースの貫通孔に介挿された接続部材及びその周辺部を示す断面図である。It is sectional drawing which shows the connection member inserted by the through-hole of the inverter case, and the through-hole of the motor case, and its peripheral part. インバータケースの貫通孔及びモータケースの貫通孔がずれた場合に、これらの貫通孔に介挿された接続部材及びその周辺部を示す断面図である。When the through-hole of an inverter case and the through-hole of a motor case have shifted | deviated, it is sectional drawing which shows the connection member inserted by these through-holes, and its peripheral part. 比較例として示す接続部材が貫通孔に介挿された状態を示す断面図である。It is sectional drawing which shows the state by which the connection member shown as a comparative example was inserted by the through-hole. 本発明の第２の実施の形態に係る接続部材を示す外観図である。It is an external view which shows the connection member which concerns on the 2nd Embodiment of this invention. （ａ）は、第２の実施の形態に係る接続部材及びその周辺部を示す断面図であり、（ｂ）は（ａ）の部分拡大図である。(A) is sectional drawing which shows the connection member which concerns on 2nd Embodiment, and its peripheral part, (b) is the elements on larger scale of (a). インバータケースの貫通孔及びモータケースの貫通孔がずれた場合に、これらの貫通孔に介挿された第２の実施の形態に係る接続部材及びその周辺部を示す断面図である。When the through-hole of an inverter case and the through-hole of a motor case have shifted | deviated, it is sectional drawing which shows the connection member which concerns on 2nd Embodiment inserted in these through-holes, and its peripheral part.

［第１の実施の形態］
以下、本発明の第１の実施の形態について、図１から図４を参照して説明する。 [First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

図１は、本実施の形態に係るインバータ一体型モータを示す概略図である。このインバータ一体型モータ１００は、インバータ１１０とモータ１２０とが一体化され、例えば車両の走行用の駆動源として用いられる。   FIG. 1 is a schematic diagram showing an inverter-integrated motor according to the present embodiment. In this inverter-integrated motor 100, an inverter 110 and a motor 120 are integrated, and used as a driving source for driving a vehicle, for example.

インバータ１１０は、インバータケース１１１と、インバータケース１１１の内部に収容された電力変換装置としてのＩＰＭ（Intelligent Power Module）１１２とを有している。ＩＰＭ１１２は、電力を制御するパワーＭＯＳＦＥＴ（Metal-Oxide-Semiconductor Field-Effect Transistor）やＩＧＢＴ（Insulated Gate Bipolar Transistor：絶縁ゲートバイポーラトランジスタ）などのパワーデバイス、及びその駆動回路、ならびに自己保護機能を組み込んだモジュールであり、駆動回路による制御によって、直流電力を交流電力に変換する機能、及び交流電力を直流電力に変換する機能を有している。インバータケース１１１は、本発明の第１の筐体の一例であり、ＩＰＭ１１２は、第１の内部装置の一例である。   The inverter 110 includes an inverter case 111 and an IPM (Intelligent Power Module) 112 as a power conversion device housed in the inverter case 111. The IPM112 incorporates power devices such as power MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors) and IGBTs (Insulated Gate Bipolar Transistors) that control power, their drive circuits, and self-protection functions. It is a module and has a function of converting DC power into AC power and a function of converting AC power into DC power under the control of the drive circuit. The inverter case 111 is an example of a first housing of the present invention, and the IPM 112 is an example of a first internal device.

インバータケース１１１の内部には、端子台１１３が設けられ、この端子台１１３とＩＰＭ１１２とがバスバー１１４によって接続されている。バスバー１１４は、その両端部が、ボルト１１３ａ，１１２ａによって端子台１１３及びＩＰＭ１１２に固定されている。また、インバータケース１１１の外面には、ＩＰＭ１１２に対応する部位に、冷却用のフィン１１５が設けられている。   A terminal block 113 is provided inside the inverter case 111, and the terminal block 113 and the IPM 112 are connected by a bus bar 114. Both ends of the bus bar 114 are fixed to the terminal block 113 and the IPM 112 by bolts 113a and 112a. In addition, cooling fins 115 are provided on the outer surface of the inverter case 111 at portions corresponding to the IPM 112.

インバータケース１１１には、貫通孔１１１Ａが形成されている。この貫通孔１１１Ａは、インバータケース１１１の内部と外部とを連通している。   A through hole 111 </ b> A is formed in the inverter case 111. The through hole 111A communicates the inside and the outside of the inverter case 111.

モータ１２０は、モータケース１２１と、モータケース１２１の内部に収容された固定子１２４及び回転子１２５とを有している。回転子１２５は円筒状であり、その外周面に等間隔に配置された複数の磁石１２６を有している。回転子１２５には、出力軸１２７が一体回転するように固定されている。出力軸１２７は、軸受１２８，１２９によって回転可能に軸支されている。固定子１２４は、ＩＰＭ１１２によって変換された交流電力によって磁力を発生する電磁コイルを有し、回転子１２５は、この磁力を受けて回転する。モータケース１２１は、本発明の第２の筐体の一例であり、固定子１２４は、第２の内部装置の一例である。   The motor 120 includes a motor case 121, and a stator 124 and a rotor 125 housed in the motor case 121. The rotor 125 is cylindrical and has a plurality of magnets 126 arranged at equal intervals on the outer peripheral surface thereof. An output shaft 127 is fixed to the rotor 125 so as to rotate integrally. The output shaft 127 is rotatably supported by bearings 128 and 129. The stator 124 has an electromagnetic coil that generates magnetic force by the AC power converted by the IPM 112, and the rotor 125 rotates by receiving this magnetic force. The motor case 121 is an example of a second housing of the present invention, and the stator 124 is an example of a second internal device.

モータケース１２１は、本体部１２２と蓋部１２３とからなり、本体部１２２と蓋部１２３とが、複数のボルト１２１ａによって連結されている。固定子１２４は、本体部１２２の内面に固定されている。また、モータケース１２１の本体部１２２には、その内部と外部とを連通する貫通孔１２２Ａが形成されている。   The motor case 121 includes a main body portion 122 and a lid portion 123, and the main body portion 122 and the lid portion 123 are connected by a plurality of bolts 121a. The stator 124 is fixed to the inner surface of the main body 122. In addition, the body portion 122 of the motor case 121 is formed with a through hole 122A that communicates the inside and the outside.

モータケース１２１は、インバータケース１１１に一体化されている。モータケース１２１とインバータケース１１１とは、その外面における平坦な部分同士が接触するように隣接して配置され、例えば図略のボルトによって相互に固定されている。貫通孔１１１Ａ及び貫通孔１２２Ａは、モータケース１２１及びインバータケース１１１が互いに接触する部分に形成され、モータケース１２１とインバータケース１１１との一体化により、相互に連通するように形成されている。   The motor case 121 is integrated with the inverter case 111. The motor case 121 and the inverter case 111 are arranged adjacent to each other so that flat portions on the outer surfaces thereof are in contact with each other, and are fixed to each other, for example, by bolts (not shown). The through hole 111 </ b> A and the through hole 122 </ b> A are formed at portions where the motor case 121 and the inverter case 111 are in contact with each other, and are formed so as to communicate with each other by the integration of the motor case 121 and the inverter case 111.

ＩＰＭ１１２と固定子１２４とは、接続部材１によって電気的に接続されている。接続部材１は、ＩＰＭ１１２と固定子１２４とを、インバータケース１１１の貫通孔１１１Ａ及びモータケース１２１の貫通孔１２２Ａを介して電気的に接続する。   The IPM 112 and the stator 124 are electrically connected by the connection member 1. The connection member 1 electrically connects the IPM 112 and the stator 124 via the through hole 111 </ b> A of the inverter case 111 and the through hole 122 </ b> A of the motor case 121.

接続部材１は、貫通孔１１１Ａ、１２２Ａに挿通されたケーブル１１と、ケーブル１１と貫通孔１１１Ａ，１２２Ａとの間を液密にシールするシール装置１０と、ケーブル１１の両端に圧着して固定された第１及び第２の端子１２，１３とを有している。   The connecting member 1 is fixed by being crimped to both ends of the cable 11, the cable 11 inserted through the through holes 111 </ b> A and 122 </ b> A, the sealing device 10 that seals the gap between the cable 11 and the through holes 111 </ b> A and 122 </ b> A. And first and second terminals 12 and 13.

第１の端子１２は、その一端がケーブル１１の一方の端部に固定され、他端がバスバー１１４と共にボルト１１３ａによって端子台１１３に固定されている。第２の端子１３は、その一端がケーブル１１の他方の端部に固定され、他端が固定子１２４にボルト１２４ａによって固定されている。これにより、ＩＰＭ１１２と固定子１２４とが、バスバー１１４，第１の端子１２，ケーブル１１，及び第２の端子１３によって電気的に接続される。   The first terminal 12 has one end fixed to one end of the cable 11 and the other end fixed to the terminal block 113 together with the bus bar 114 by a bolt 113a. One end of the second terminal 13 is fixed to the other end of the cable 11, and the other end is fixed to the stator 124 by a bolt 124 a. As a result, the IPM 112 and the stator 124 are electrically connected by the bus bar 114, the first terminal 12, the cable 11, and the second terminal 13.

なお、モータ１２０が三相交流モータである場合には、インバータケース１１１及びモータケース１２１にそれぞれ３つの貫通孔１１１Ａ，１２２Ａが形成され、各相のモータ電流が、３つの貫通孔１１１Ａ，１２２Ａのそれぞれに挿通された３つの接続部材１によってモータ１２０に供給される。図１では、このうち１つの接続部材１のみを図示している。   When the motor 120 is a three-phase AC motor, three through holes 111A and 122A are formed in the inverter case 111 and the motor case 121, respectively, and the motor current of each phase flows through the three through holes 111A and 122A. It is supplied to the motor 120 by the three connecting members 1 inserted through each of them. In FIG. 1, only one connection member 1 is illustrated.

図２は、接続部材１の構成例をより具体的に示す外観図である。接続部材１は、ケーブル１１と、ケーブル１１を挿通させるシール装置１０と、第１及び第２の端子１２，１３とを有している。   FIG. 2 is an external view showing a configuration example of the connection member 1 more specifically. The connecting member 1 includes a cable 11, a sealing device 10 through which the cable 11 is inserted, and first and second terminals 12 and 13.

ケーブル１１は、銅などの導電性の金属からなる芯線１１ａと、絶縁性の樹脂からなるシース１１ｂとからなり、屈曲可能な可撓性を有している。ケーブル１１の両端では、シース１１ｂが取り除かれて芯線１１ａが露出し、この露出した部分に第１及び第２の端子１２，１３がそれぞれ圧着されている。第１の端子１２には、ボルト１１３ａ（図１に示す）を挿通させる固定用の孔１２ａが形成され、第２の端子１３には、ボルト１２４ａ（図１に示す）を挿通させる固定用の孔１３ａが形成されている。   The cable 11 is composed of a core wire 11a made of a conductive metal such as copper and a sheath 11b made of an insulating resin, and has flexibility to be bent. At both ends of the cable 11, the sheath 11b is removed to expose the core wire 11a, and the first and second terminals 12 and 13 are respectively crimped to the exposed portions. The first terminal 12 is formed with a fixing hole 12a through which a bolt 113a (shown in FIG. 1) is inserted, and the second terminal 13 is fixed through which a bolt 124a (shown in FIG. 1) is inserted. A hole 13a is formed.

シール装置１０は、第１のシール部材２１と、第２のシール部材２２と、ケーブル１１の中心軸に沿って第１のシール部材２１と第２のシール部材２２との間に配置されたスペーサ３と、第１及び第２のキャップ４１，４２とを備えている。   The seal device 10 includes a first seal member 21, a second seal member 22, and a spacer disposed between the first seal member 21 and the second seal member 22 along the central axis of the cable 11. 3 and first and second caps 41 and 42.

第１のシール部材２１及び第２のシール部材２２は、ケーブル１１を挿通させる環状の弾性部材である。第１のシール部材２１は、第２のシール部材２２よりも外径が大きく形成されている。   The first seal member 21 and the second seal member 22 are annular elastic members through which the cable 11 is inserted. The first seal member 21 has a larger outer diameter than the second seal member 22.

スペーサ３は、ケーブル１１を挿通させる中空の部材である。スペーサ３は、第１のシール部材２１側に配置された第１部材３１と、第２のシール部材２２側に配置された第２部材３２とを有している。第１部材３１と第２部材３２とは別体であり、ケーブル１１の中心軸に対して交差する方向に相対移動可能である。第１部材３１及び第２部材３２は、ケーブル１１の屈曲を規制できる程度の硬さを有する材料、例えばポリイミド等の樹脂からなる。第１部材３１は、第２部材３２よりも外径が大きく形成されている。   The spacer 3 is a hollow member through which the cable 11 is inserted. The spacer 3 includes a first member 31 disposed on the first seal member 21 side and a second member 32 disposed on the second seal member 22 side. The first member 31 and the second member 32 are separate bodies and are relatively movable in a direction intersecting the central axis of the cable 11. The first member 31 and the second member 32 are made of a material having a hardness that can restrict the bending of the cable 11, for example, a resin such as polyimide. The first member 31 has a larger outer diameter than the second member 32.

第１のキャップ４１及び第２のキャップ４２は、例えば樹脂からなる環状の絶縁部材である。第１のキャップ４１は、第１のシール部材２１と第１の端子１２との間に配置され、第２のキャップ４２は、第２のシール部材２２と第２の端子１３との間に配置されている。   The first cap 41 and the second cap 42 are annular insulating members made of, for example, resin. The first cap 41 is disposed between the first seal member 21 and the first terminal 12, and the second cap 42 is disposed between the second seal member 22 and the second terminal 13. Has been.

図３は、インバータケース１１１の貫通孔１１１Ａ及びモータケース１２１の本体部１２２に形成された貫通孔１２２Ａに介挿された接続部材１及びその周辺部を示す断面図である。この図では、貫通孔１１１Ａの軸心と貫通孔１２２Ａの軸心とが一致している場合を示している。   FIG. 3 is a cross-sectional view showing the connection member 1 inserted in the through-hole 122A formed in the through-hole 111A of the inverter case 111 and the main body 122 of the motor case 121 and the peripheral portion thereof. This figure shows a case where the axial center of the through hole 111A and the axial center of the through hole 122A coincide.

第１のシール部材２１は、ケーブル１１の外面と貫通孔１１１Ａの内面１１１ａとの間を液密にシールしている。第２のシール部材２２は、ケーブル１１の外面と貫通孔１２２Ａの内面１２２ａとの間を液密にシールしている。   The first sealing member 21 liquid-tightly seals between the outer surface of the cable 11 and the inner surface 111a of the through hole 111A. The second seal member 22 provides a liquid-tight seal between the outer surface of the cable 11 and the inner surface 122a of the through hole 122A.

貫通孔１１１Ａの内径と貫通孔１２２Ａの内径とは異なり、貫通孔１１１Ａの内径が貫通孔１２２Ａの内径よりも大きく形成されている。貫通孔１２２Ａの一端には、内方に突出した鍔部１２２ｂが形成されている。この鍔部１２２ｂに第２のキャップ４２が当接することで、シール装置１０の構成部材がモータケース１２１側に抜け出すことが規制されている。   Unlike the inner diameter of the through hole 111A and the inner diameter of the through hole 122A, the inner diameter of the through hole 111A is formed larger than the inner diameter of the through hole 122A. At one end of the through hole 122A, a flange 122b protruding inward is formed. When the second cap 42 comes into contact with the flange 122b, the constituent members of the sealing device 10 are restricted from coming out to the motor case 121 side.

スペーサ３の第１部材３１及び第２部材３２は、ケーブル１１を挿通させる円筒状であり、ケーブル１１の中心軸Ｃに沿って並列している。第１部材３１の第２部材３２との対向端面３１ｂと、第２部材３２の第１部材３１との対向端面３２ｂとは、互いに向かい合っている。図３に示す例では、第１部材３１の対向端面３１ｂと第２部材３２の対向端面３２ｂとが面接触している。また、対向端面３１ｂ，３２ｂは、ケーブル１１の中心軸Ｃに直交している。   The first member 31 and the second member 32 of the spacer 3 have a cylindrical shape through which the cable 11 is inserted, and are parallel to each other along the central axis C of the cable 11. The opposing end surface 31b of the first member 31 facing the second member 32 and the opposing end surface 32b of the second member 32 facing the first member 31 face each other. In the example shown in FIG. 3, the opposed end surface 31 b of the first member 31 and the opposed end surface 32 b of the second member 32 are in surface contact. The opposed end surfaces 31 b and 32 b are orthogonal to the central axis C of the cable 11.

第１部材３１は、貫通孔１１１Ａの内径に適合する外径、及びケーブル１１の外径に適合する内径を有している。第１部材３１の内面３１ａは、ケーブル１１の外面に接している。これにより、第１部材３１は、その内部におけるケーブル１１の屈曲を抑制している。内面３１ａは、対向端面３１ｂ側の一部が曲面状に面取りされている。また、第１部材３１の外面と貫通孔１１１Ａの内面１１１ａとは、僅かな空隙を介して対向している。   The first member 31 has an outer diameter that matches the inner diameter of the through hole 111 </ b> A and an inner diameter that matches the outer diameter of the cable 11. The inner surface 31 a of the first member 31 is in contact with the outer surface of the cable 11. Thereby, the 1st member 31 is suppressing the bending of the cable 11 in the inside. A part of the inner surface 31a on the opposite end surface 31b side is chamfered into a curved surface. Further, the outer surface of the first member 31 and the inner surface 111a of the through hole 111A are opposed to each other with a slight gap.

スペーサ３の第２部材３２は、互いに内径が異なる小内径部３２１及び大内径部３２２を一体に有している。大内径部３２２は、小内径部３２１よりも対向端面３２ｂ側に配置されている。小内径部３２１の外径及び大内径部３２２の外径は共通であり、第２部材３２の外面と貫通孔１２２Ａの内面１２２ａとは、僅かな空隙を介して対向している。   The second member 32 of the spacer 3 integrally includes a small inner diameter portion 321 and a large inner diameter portion 322 having different inner diameters. The large inner diameter portion 322 is disposed closer to the opposed end surface 32b than the small inner diameter portion 321. The outer diameter of the small inner diameter portion 321 and the outer diameter of the large inner diameter portion 322 are common, and the outer surface of the second member 32 and the inner surface 122a of the through hole 122A are opposed to each other with a slight gap.

小内径部３２１は、その内面３２１ａがケーブル１１の外面に接することにより、小内径部３２１内におけるケーブル１１の屈曲を規制する内径を有している。大内径部３２２は、その内面３２２ａとケーブル１１の外面との間に隙間Ｓ１が形成されることにより、大内径部３２２内におけるケーブル１１の屈曲を許容する内径を有している。 The small inner diameter portion 321 has an inner diameter that restricts the bending of the cable 11 in the small inner diameter portion 321 when the inner surface 321 a contacts the outer surface of the cable 11. The large inner diameter portion 322 has an inner diameter that allows the cable 11 to be bent in the large inner diameter portion 322 by forming a gap S 1 between the inner surface 322 a and the outer surface of the cable 11.

本実施の形態では、小内径部３２１の内面３２１ａの内径は軸方向に一定であり、大内径部３２２内面３２２ａの内径は、対向端面３２ｂに向かって徐々に拡径している。つまり、内面３２２ａは、対向端面３２ｂに向かって内径が徐々に広がるテーパ面であり、隙間Ｓ１の幅（中心軸Ｃに対する径方向の長さ）は、対向端面３２ｂに近づくほど拡大している。 In the present embodiment, the inner diameter of the inner surface 321a of the small inner diameter portion 321 is constant in the axial direction, and the inner diameter of the inner surface 322a of the large inner diameter portion 322 is gradually increased toward the opposing end surface 32b. That is, the inner surface 322a is a tapered surface whose inner diameter toward the opposite end face 32b is gradually widened, (the length in the radial direction with respect to the central axis C) the width of the gap S 1 is expanded closer to the opposing end surface 32b .

シール装置１０は、インバータケース１１１とモータケース１２１とを一体化した後、インバータケース１１１の内部からモータケース１２１側に向かって、貫通孔１１１Ａ，１２２Ａに挿入される。第２の端子１３は、貫通孔１２２Ａを通過してモータケース１２１内に進入する。   After the inverter case 111 and the motor case 121 are integrated, the sealing device 10 is inserted into the through holes 111A and 122A from the inside of the inverter case 111 toward the motor case 121 side. The second terminal 13 passes through the through hole 122A and enters the motor case 121.

この挿入の際には、第１キャップ４１からの押圧力が直接的に第１のシール部材２１に作用すると共に、スペーサ３の第１部材３１及び第２部材を介して間接的に第２のシール部材２２に作用し、第１のシール部材２１が貫通孔１１１Ａ内の所定の位置に、また第２のシール部材２２が貫通孔１２２Ａ内の所定の位置に、それぞれ配置される。   In this insertion, the pressing force from the first cap 41 directly acts on the first seal member 21 and the second member indirectly through the first member 31 and the second member of the spacer 3. Acting on the seal member 22, the first seal member 21 is disposed at a predetermined position in the through hole 111A, and the second seal member 22 is disposed at a predetermined position in the through hole 122A.

図４は、貫通孔１１１Ａの軸心と貫通孔１２２Ａの軸心とが一致せず、貫通孔１２２Ａの軸心が貫通孔１１１Ａの軸心よりも図面右方向にずれた状態で、インバータケース１１１とモータケース１２１とが一体化された場合を示している。   FIG. 4 shows the inverter case 111 in a state where the axial center of the through hole 111A and the axial center of the through hole 122A do not coincide with each other and the axial center of the through hole 122A is shifted to the right of the drawing from the axial center of the through hole 111A. And the motor case 121 are integrated.

この場合、スペーサ３の第１部材３１と第２部材３２とが対向端面３１ｂ，３２ｂに沿って相対移動可能であるので、第１のシール部材２１及びスペーサ３の第１部材３１は貫通孔１１１Ａと軸心が一致するように配置され、第２のシール部材２２及びスペーサ３の第２部材３２は貫通孔１２２Ａと軸心が一致するように配置される。   In this case, since the first member 31 and the second member 32 of the spacer 3 are relatively movable along the opposed end surfaces 31b and 32b, the first seal member 21 and the first member 31 of the spacer 3 are formed in the through hole 111A. And the second seal member 22 and the second member 32 of the spacer 3 are arranged so that the axial center coincides with the through hole 122A.

ケーブル１１は、貫通孔１１１Ａ内では、スペーサ３の第１部材３１の内面３１ａが面取りされた部分を除き、貫通孔１１１Ａの軸心に中心軸Ｃが一致するように保持される。また、ケーブル１１は、貫通孔１２２Ａ内における第２のシール部材２２及び第２部材３２の小内径部３２１の内部では、貫通孔１２２Ａの軸心に中心軸Ｃが一致するように保持される。   The cable 11 is held in the through hole 111A so that the central axis C coincides with the axial center of the through hole 111A except for a portion where the inner surface 31a of the first member 31 of the spacer 3 is chamfered. Further, the cable 11 is held inside the second seal member 22 and the small inner diameter portion 321 of the second member 32 in the through hole 122A so that the central axis C coincides with the axis of the through hole 122A.

スペーサ３の第１部材３１の内部におけるケーブル１１の中心軸Ｃと第２部材３２の小内径部３２１内におけるケーブル１１の中心軸Ｃとのずれは、主として第２部材３２の大内径部３２２内におけるケーブル１１の屈曲によって吸収される。また、第１部材３１の内部及び第２部材の小内径部３２１の内部では、ケーブル１１の屈曲が規制されているので、第１のシール部材２１及び第２のシール部材２２の内部では、大内径部３２２内におけるケーブル１１の屈曲の影響が緩和され、ケーブル１１の姿勢が直線状に維持される。これにより、第１のシール部材２１及び第２のシール部材２２のシール性が良好に保たれる。   The deviation between the central axis C of the cable 11 in the first member 31 of the spacer 3 and the central axis C of the cable 11 in the small inner diameter portion 321 of the second member 32 is mainly in the large inner diameter portion 322 of the second member 32. Is absorbed by the bending of the cable 11. In addition, since bending of the cable 11 is restricted inside the first member 31 and inside the small inner diameter portion 321 of the second member, the inside of the first seal member 21 and the second seal member 22 is large. The influence of bending of the cable 11 in the inner diameter portion 322 is alleviated, and the attitude of the cable 11 is maintained in a straight line. Thereby, the sealing performance of the 1st sealing member 21 and the 2nd sealing member 22 is maintained favorable.

（比較例）
図５は、比較例として示す接続部材１Ｂが貫通孔１１１Ａ及び貫通孔１２２Ａに介挿された状態を示す断面図である。この接続部材１Ｂは、第１のキャップ４１と第２のキャップ４２との間に一つのシール部材２０を有する構成が、第１の実施の形態に係る接続部材１と異なる。 (Comparative example)
FIG. 5 is a cross-sectional view showing a state in which the connection member 1B shown as the comparative example is inserted in the through hole 111A and the through hole 122A. The connection member 1B is different from the connection member 1 according to the first embodiment in that the single seal member 20 is provided between the first cap 41 and the second cap 42.

シール部材２０は、貫通孔１１１Ａの内面１１１ａとケーブル１１の外面との間をシールする第１シール部２０１と、貫通孔１２２Ａの内面１１１ａとケーブル１１の外面との間をシールする第２シール部２０２と、第１シール部２０１と第２シール部２０２とを連結する連結部２００とを一体に有する弾性部材からなる。   The seal member 20 includes a first seal portion 201 that seals between the inner surface 111a of the through hole 111A and the outer surface of the cable 11, and a second seal portion that seals between the inner surface 111a of the through hole 122A and the outer surface of the cable 11. 202 and an elastic member integrally including a connecting portion 200 that connects the first seal portion 201 and the second seal portion 202.

このシール部材２０を用いた接続部材１Ｂでは、貫通孔１１１Ａの軸心と貫通孔１２２Ａの軸心とが一致している場合には、シール性が良好に保たれ得る。しかし、貫通孔１１１Ａの軸心と貫通孔１２２Ａの軸心とがずれた場合には、シール部材２０の内部におけるケーブル１１の屈曲により、第１シール部２０１及び第２シール部２０２の周方向における荷重の分布のばらつきが大きくなり、荷重が小さくなる部位においてシール性が低下してしまう。   In the connection member 1B using the seal member 20, when the axis of the through hole 111A and the axis of the through hole 122A coincide with each other, the sealing performance can be kept good. However, when the axial center of the through hole 111A and the axial center of the through hole 122A are deviated, the cable 11 in the seal member 20 is bent in the circumferential direction of the first seal portion 201 and the second seal portion 202. The variation in the distribution of the load becomes large, and the sealing performance is lowered at the portion where the load becomes small.

（第１の実施の形態の作用及び効果）
以上説明した第１の実施の形態によれば、以下に述べる作用及び効果が得られる。 (Operation and effect of the first embodiment)
According to the first embodiment described above, the following operations and effects can be obtained.

（１）第１のシール部材２１と第２のシール部材２２との間に配置されたスペーサ３が第１部材３１及び第２部材３２からなり、第１部材３１と第２部材３２とがケーブル１１の中心軸Ｃに対して交差する方向に相対移動可能であるので、貫通孔１１１Ａの軸心と貫通孔１２２Ａの軸心がずれても、この軸心のずれに起因するケーブル１１の屈曲による第１及び第２のシール部材２１，２２の内部における荷重分布のばらつきが緩和され、シール性を保つことが可能となる。 (1) The spacer 3 disposed between the first seal member 21 and the second seal member 22 includes a first member 31 and a second member 32, and the first member 31 and the second member 32 are cables. 11 is movable in a direction intersecting with the central axis C, so even if the axis of the through hole 111A and the axis of the through hole 122A are deviated, the cable 11 is bent due to the deviation of the axis. Variations in the load distribution inside the first and second seal members 21 and 22 are alleviated, and the sealing performance can be maintained.

（２）第２部材３２は、小内径部３２１と大内径部３２２とを有し、小内径部３２１の内部ではケーブル１１の屈曲が規制され、大内径部３２２の内部ではケーブル１１の屈曲が許容されるので、貫通孔１１１Ａの軸心と貫通孔１２２Ａの軸心のずれによって大内径部３２２の内部でケーブル１１が屈曲しても、この屈曲による第２のシール部材２２の内面における荷重のばらつきが小内径部３２１によって緩和され、より確実にシール性を保つことが可能となる。 (2) The second member 32 has a small inner diameter portion 321 and a large inner diameter portion 322, and the bending of the cable 11 is restricted inside the small inner diameter portion 321, and the bending of the cable 11 is restricted inside the large inner diameter portion 322. Therefore, even if the cable 11 is bent inside the large inner diameter portion 322 due to the deviation of the axial center of the through hole 111A and the axial center of the through hole 122A, the load on the inner surface of the second seal member 22 due to the bending is not limited. The variation is alleviated by the small inner diameter portion 321 and the sealing performance can be more reliably maintained.

（３）貫通孔１２２Ａは、貫通孔１１１Ａよりも内径が小さいので、インバータケース１１１側（貫通孔１１１Ａ側）からシール装置１０を挿入する際に、第２のシール部材２２は貫通孔１１１Ａの内面１１１ａを摺動しない。これにより、接続部材１の装着が容易化されると共に、第２のシール部材２２をより確実に貫通孔１２２Ａ内の所定の位置に配置することが可能となる。 (3) Since the inner diameter of the through hole 122A is smaller than that of the through hole 111A, when the sealing device 10 is inserted from the inverter case 111 side (through hole 111A side), the second seal member 22 is the inner surface of the through hole 111A. Do not slide 111a. As a result, the mounting of the connection member 1 is facilitated, and the second seal member 22 can be more reliably disposed at a predetermined position in the through hole 122A.

［第２の実施の形態］
図６は、本発明の第２の実施の形態に係る接続部材１Ａを示す外観図である。この接続部材１Ａは、第１のシール部材２１と第２のシール部材２２との間に配置されたスペーサ５の構成が、第１の実施の形態に係る接続部材１のスペーサ３の構成とは異なり、その他の構成は接続部材１と共通である。第１のシール部材２１，第２のシール部材２２，スペーサ５，第１のキャップ４１，及び第２のキャップ４２は、シール装置１０Ａを構成する。 [Second Embodiment]
FIG. 6 is an external view showing a connecting member 1A according to the second embodiment of the present invention. In this connection member 1A, the configuration of the spacer 5 arranged between the first seal member 21 and the second seal member 22 is the same as the configuration of the spacer 3 of the connection member 1 according to the first embodiment. Differently, the other configuration is the same as that of the connection member 1. The first seal member 21, the second seal member 22, the spacer 5, the first cap 41, and the second cap 42 constitute a seal device 10A.

スペーサ５は、第１部材５１と、第１部材５１とは別体で、第１部材５１よりも外径が小さく形成された第２部材５２とからなる。第１部材５１は第１のシール部材２１側に、第２部材５２は第２のシール部材２２側に、それぞれ配置されている。第２部材５２は、第１エレメント５３と第２エレメント５４とを、例えば接着によって接合して構成されている。   The spacer 5 includes a first member 51 and a second member 52 that is separate from the first member 51 and has an outer diameter smaller than that of the first member 51. The first member 51 is disposed on the first seal member 21 side, and the second member 52 is disposed on the second seal member 22 side. The second member 52 is configured by joining the first element 53 and the second element 54 by, for example, adhesion.

図７（ａ）は、貫通孔１１１Ａ及び貫通孔１２２Ａに介挿された接続部材１Ａ及びその周辺部を示す断面図であり、（ｂ）は（ａ）の部分拡大図である。図７（ａ）では、貫通孔１１１Ａの軸心と貫通孔１２２Ａの軸心とが一致している場合を示している。   FIG. 7A is a cross-sectional view showing the connecting member 1A inserted in the through hole 111A and the through hole 122A and its peripheral portion, and FIG. 7B is a partially enlarged view of FIG. FIG. 7A shows a case where the axial center of the through hole 111A and the axial center of the through hole 122A coincide.

図７（ｂ）に示すように、スペーサ５の第１部材５１は、互いに内径が異なる小内径部５１１と大内径部５１２とを一体に有している。小内径部５１１は、大内径部５１２よりも第１のシール部材２１側に配置されている。   As shown in FIG. 7B, the first member 51 of the spacer 5 integrally includes a small inner diameter portion 511 and a large inner diameter portion 512 having different inner diameters. The small inner diameter portion 511 is disposed closer to the first seal member 21 than the large inner diameter portion 512.

小内径部５１１の内径は、その内面５１１ａとケーブル１１の外面との接触により、小内径部５１１の内部におけるケーブル１１の屈曲を規制する寸法に設定されている。大内径部５１２の内径は、その内面５１２ａとケーブル１１の外面との間に隙間Ｓ２が形成され、大内径部５１２の内部におけるケーブル１１の屈曲を許容する寸法に設定されている。 The inner diameter of the small inner diameter portion 511 is set to a dimension that restricts the bending of the cable 11 inside the small inner diameter portion 511 due to contact between the inner surface 511 a and the outer surface of the cable 11. The inner diameter of the large inner diameter portion 512 is set to a dimension that allows a bend of the cable 11 inside the large inner diameter portion 512 by forming a gap S 2 between the inner surface 512 a and the outer surface of the cable 11.

大内径部５１２には、その外周部に環状の凹部５１２ｂが形成されている。凹部５１２ｂは、大内径部５１２の外面からケーブル１１の中心軸Ｃに向かって窪むように形成されている。   The large inner diameter portion 512 is formed with an annular recess 512b on the outer peripheral portion thereof. The concave portion 512b is formed so as to be recessed from the outer surface of the large inner diameter portion 512 toward the central axis C of the cable 11.

第２部材５２の第１エレメント５２１は、本体部５２１ａと、本体部５２１ａから第１部材５１の小内径部５１１に向かって張り出し、第１部材５１の大内径部５１２の半周囲を包囲する鍔部５２１ｂと、鍔部５２１ｂの先端から内方に向かって（ケーブル１１に向かって）突出するように形成され、凹部５１２ｂの半周囲を包囲する凸部５２１ｃとを一体に有している。また、第２エレメント５２２は、第１エレメント５２１の本体部５２１ａ，鍔部５２１ｂ，及び凸部５２１ｃのそれぞれと対称な形状に形成された本体部５２２ａ，鍔部５２２ｂ，及び凸部５２２ｃを一体に有している。   The first element 521 of the second member 52 protrudes from the main body portion 521a toward the small inner diameter portion 511 of the first member 51 and surrounds the half circumference of the large inner diameter portion 512 of the first member 51. The part 521b and the convex part 521c which are formed so as to protrude inward (toward the cable 11) from the tip of the flange part 521b and surround the half periphery of the concave part 512b are integrally provided. Further, the second element 522 is formed by integrating the main body portion 522a, the flange portion 522b, and the convex portion 522c that are formed symmetrically with the main body portion 521a, the flange portion 521b, and the convex portion 521c of the first element 521. Have.

第１エレメント５２１の本体部５２１ａ及び第２エレメント５２２の本体部５２２ａにおける第２部材５２の内面５２ａの内径は、ケーブル１１の外面との接触により、本体部５２１ａ，５２２ａの間におけるケーブル１１の屈曲を規制する寸法に設定されている。   The inner diameter 52a of the second member 52 in the main body portion 521a of the first element 521 and the main body portion 522a of the second element 522 is bent between the main body portions 521a and 522a due to contact with the outer surface of the cable 11. It is set to a dimension that regulates.

第１部材５１の大内径部５１２の先端面は、第２部材５２の第１エレメント５２１及び第２エレメント５２２の本体部５２１ａ，５２２ａに対向する対向端面５１２ｃとして形成されている。この対向端面５１２ｃには、本体部５２１ａの対向端面５２１ｄ及び本体部５２２ａの対向端面５２２ｄが向かい合う。   The front end surface of the large inner diameter portion 512 of the first member 51 is formed as an opposing end surface 512c that faces the first element 521 of the second member 52 and the main body portions 521a and 522a of the second element 522. The opposed end surface 512c faces the opposed end surface 521d of the main body 521a and the opposed end surface 522d of the main body 522a.

大内径部５１２の凹部５１２ｂには、第１エレメント５２１の凸部５２１ｃ及び第２エレメント５２２の凸部５２２ｃが係合している。貫通孔１１１Ａの軸心と貫通孔１２２Ａの軸心とが一致している場合には、凹部５１２ｂの底部と凸部５２１ｃ，５２２ｃの先端部との間に隙間Ｓ３が形成され、この隙間Ｓ３によって第１部材５１と第２部材５２との径方向への相対移動が可能となっている。 The convex portion 521 c of the first element 521 and the convex portion 522 c of the second element 522 are engaged with the concave portion 512 b of the large inner diameter portion 512. If the axis of the through hole 111A and the axis of the through hole 122A are coincident, the bottom and the convex portion 521c of the recess 512b, the gap S 3 is formed between the tip of 522c, the clearance S 3 , the first member 51 and the second member 52 can be relatively moved in the radial direction.

また、凹部５１２ｂと凸部５２１ｃ，５２２ｃとの係合により、第１部材５１と第２部材５２の互いに離間する方向への相対的な移動が規制されている。つまり、第１部材５１がケーブル１１の中心軸Ｃに沿って第２部材５２から離間する方向に移動すると、これに連れて第２部材５２が移動するようにスペーサ５が構成されている。   Further, the relative movement of the first member 51 and the second member 52 in the direction away from each other is restricted by the engagement between the concave portion 512b and the convex portions 521c and 522c. That is, the spacer 5 is configured such that when the first member 51 moves in the direction away from the second member 52 along the central axis C of the cable 11, the second member 52 moves accordingly.

図８は、本実施の形態において、貫通孔１１１Ａの軸心と貫通孔１２２Ａの軸心とが一致せず、貫通孔１２２Ａの軸心が貫通孔１１１Ａの軸心よりも図面右方向にずれた状態で、インバータケース１１１とモータケース１２１とが一体化された場合を示している。   FIG. 8 shows that, in the present embodiment, the axis of the through hole 111A and the axis of the through hole 122A do not coincide with each other, and the axis of the through hole 122A is shifted to the right in the drawing from the axis of the through hole 111A. In this state, the inverter case 111 and the motor case 121 are integrated.

スペーサ５の第２部材５２及び第２のシール部材２２の軸心は、貫通孔１１１Ａと貫通孔１２２Ａとの軸心のずれに応じて、第１部材５１及び第１のシール部材２１に対してケーブル１１の中心軸Ｃの径方向に変位している。   The axial centers of the second member 52 and the second seal member 22 of the spacer 5 are relative to the first member 51 and the first seal member 21 according to the shift of the axial center between the through hole 111A and the through hole 122A. The cable 11 is displaced in the radial direction of the central axis C.

ケーブル１１は、第１部材５１の大内径部５１２の内部で屈曲しているが、第１部材５１の小内径部５１１の内部及び第２部材５２の内部ではケーブル１１の屈曲が規制されているので、大内径部５１２の内部におけるケーブル１１の屈曲に起因して発生し得る第１のシール部材２１及び第２のシール部材２２の荷重のばらつき（第１のシール部材２１及び第２のシール部材２２がケーブル１１の外面から受ける荷重の周方向におけるばらつき）が抑制されている。これにより、第１のシール部材２１及び第２のシール部材２２のシール性が良好に保たれる。   The cable 11 is bent inside the large inner diameter portion 512 of the first member 51, but the bending of the cable 11 is restricted inside the small inner diameter portion 511 of the first member 51 and inside the second member 52. Therefore, variations in the load of the first seal member 21 and the second seal member 22 that may occur due to the bending of the cable 11 inside the large inner diameter portion 512 (the first seal member 21 and the second seal member The variation in the circumferential direction of the load 22 receives from the outer surface of the cable 11 is suppressed. Thereby, the sealing performance of the 1st sealing member 21 and the 2nd sealing member 22 is maintained favorable.

（第２の実施の形態の作用及び効果）
以上説明した第２の実施の形態によれば、第１の実施の形態について述べた作用及び効果に加え、スペーサ５の第１部材５１の凹部５１２ｂと第２部材５２の凸部５２１ｃ，５２２ｃとの係合により、第１部材５１と第２部材５２との相対的な位置関係が安定する。また、インバータケース１１１とモータケース１２１とを分離する場合に、接続部材１Ａを貫通孔１１１Ａ，１２２Ａから抜き取ることが容易になる。 (Operation and effect of the second embodiment)
According to the second embodiment described above, in addition to the operations and effects described for the first embodiment, the concave portion 512b of the first member 51 of the spacer 5 and the convex portions 521c and 522c of the second member 52 Due to the engagement, the relative positional relationship between the first member 51 and the second member 52 is stabilized. Further, when the inverter case 111 and the motor case 121 are separated, it is easy to extract the connecting member 1A from the through holes 111A and 122A.

以上、本発明の実施の形態を説明したが、上記に記載した実施の形態は特許請求の範囲に係る発明を限定するものではない。また、実施の形態の中で説明した特徴の組合せの全てが発明の課題を解決するための手段に必須であるとは限らない点に留意すべきである。   While the embodiments of the present invention have been described above, the embodiments described above do not limit the invention according to the claims. In addition, it should be noted that not all the combinations of features described in the embodiments are essential to the means for solving the problems of the invention.

また、本発明は、その趣旨を逸脱しない範囲で適宜変形して実施することが可能である。例えば、第１の実施の形態では、スペーサ３の第２部材３２が小内径部３２１及び大内径部３２２を一体に有する場合について説明したが、小内径部３２１と大内径部３２２とは別体でもよい。また、第１部材３１にも小内径部及び大内径部を形成してもよい。同様に、第２の実施の形態では、スペーサ５の第１部材５１が小内径部５１１及び大内径部５１２を一体に有する場合について説明したが、小内径部５１１と大内径部５１２とが別体でもよく、第２部材５２にも小内径部及び大内径部を形成してもよい。   Further, the present invention can be appropriately modified and implemented without departing from the spirit of the present invention. For example, in the first embodiment, the case where the second member 32 of the spacer 3 integrally includes the small inner diameter portion 321 and the large inner diameter portion 322 has been described. However, the small inner diameter portion 321 and the large inner diameter portion 322 are separate. But you can. Further, the first member 31 may be formed with a small inner diameter portion and a large inner diameter portion. Similarly, in the second embodiment, the case where the first member 51 of the spacer 5 integrally includes the small inner diameter portion 511 and the large inner diameter portion 512 has been described. However, the small inner diameter portion 511 and the large inner diameter portion 512 are different from each other. The second member 52 may be formed with a small inner diameter portion and a large inner diameter portion.

また、第２の実施の形態では、スペーサ５の第１部材５１に凹部５１２ｂを形成し、第２部材５２に凸部５２２ｃを形成したが、これに限らず、第１部材５１に凸部を形成し、第２部材５２に凹部を形成してもよい。   In the second embodiment, the concave portion 512b is formed in the first member 51 of the spacer 5 and the convex portion 522c is formed in the second member 52. However, the present invention is not limited thereto, and the convex portion is formed in the first member 51. Alternatively, the second member 52 may be formed with a recess.

また、第１及び第２の実施の形態では、インバータケース１１１の貫通孔１１１Ａの内径がモータケース１２１の貫通孔１２２Ａの内径よりも大きい場合について説明したが、内径の大小関係はこれと逆でもよい。この場合、シール装置１０，１０Ａはモータケース１２１の貫通孔１２２Ａから挿入される。また、貫通孔１１１Ａの内径と貫通孔１２２Ａの内径とが同じであってもよい。   Further, in the first and second embodiments, the case where the inner diameter of the through hole 111A of the inverter case 111 is larger than the inner diameter of the through hole 122A of the motor case 121 has been described. Good. In this case, the sealing devices 10 and 10A are inserted from the through holes 122A of the motor case 121. Further, the inner diameter of the through hole 111A and the inner diameter of the through hole 122A may be the same.

１，１Ａ，１Ｂ…接続部材、３，５…スペーサ、１０，１０Ａ…シール装置、１１…ケーブル、１１ａ…芯線、１１ｂ…シース、１２…第１の端子、１３…第２の端子、１２ａ，１３ａ…固定用の孔、２０…シール部材、２１…第１のシール部材、２２…第２のシール部材、３１…第１部材、３１ａ…内面、３１ｂ…対向端面、３２…第２部材、３２ｂ…対向端面、４１…第１のキャップ、４２…第２のキャップ、５１…第１部材、５２…第２部材、５２ａ…内面、５３…第１エレメント、５４…第２エレメント、１００…インバータ一体型モータ、１１０…インバータ、１１１…インバータケース（第１の筐体）、１１１Ａ…貫通孔（第１の貫通孔）、１１１ａ…内面、１１２…ＩＰＭ（第１の内部装置）、１１３…端子台、１１３ａ，１１２ａ…ボルト、１１４…バスバー、１１５…フィン、１２０…モータ、１２１…モータケース（第２の筐体）、１２１ａ…ボルト、１２２…本体部、１２２Ａ…貫通孔（第２の貫通孔）、１２２ａ…内面、１２２ｂ…鍔部、１２３…蓋部、１２４…固定子（第２の内部装置）、１２４ａ…ボルト、１２５…回転子、１２６…磁石、１２７…出力軸、１２８，１２９…軸受、２００…連結部、２０１…第１シール部、２０２…第２シール部、３２１…小内径部、３２１ａ…内面、３２２…大内径部、３２２ａ…内面、５１１…小内径部、５１１ａ…内面、５１２…大内径部、５１２ａ…内面、５１２ｂ…凹部、５１２ｃ…対向端面、５２１…第１エレメント、５２２…第２エレメント、５２１ａ，５２２ａ…本体部、５２１ｂ，５２２ｂ…鍔部、５２１ｃ，５２２ｃ…凸部、５２１ｄ，５２２ｄ…対向端面、Ｃ…中心軸、Ｓ１，Ｓ２，Ｓ３…隙間 DESCRIPTION OF SYMBOLS 1,1A, 1B ... Connection member, 3, 5 ... Spacer 10, 10A ... Sealing device, 11 ... Cable, 11a ... Core wire, 11b ... Sheath, 12 ... First terminal, 13 ... Second terminal, 12a, 13a ... Fixing hole, 20 ... Seal member, 21 ... First seal member, 22 ... Second seal member, 31 ... First member, 31a ... Inner surface, 31b ... Opposing end surface, 32 ... Second member, 32b ... opposing end face, 41 ... first cap, 42 ... second cap, 51 ... first member, 52 ... second member, 52a ... inner surface, 53 ... first element, 54 ... second element, 100 ... one inverter Body motor, 110 ... inverter, 111 ... inverter case (first housing), 111A ... through hole (first through hole), 111a ... inner surface, 112 ... IPM (first internal device), 113 ... terminal block 113a, 1 2a ... bolt, 114 ... bus bar, 115 ... fin, 120 ... motor, 121 ... motor case (second housing), 121a ... bolt, 122 ... main body, 122A ... through hole (second through hole), 122a ... inner surface, 122b ... collar, 123 ... lid, 124 ... stator (second internal device), 124a ... bolt, 125 ... rotor, 126 ... magnet, 127 ... output shaft, 128, 129 ... bearing, 200 DESCRIPTION OF SYMBOLS ... Connection part, 201 ... 1st seal part, 202 ... 2nd seal part, 321 ... Small inner diameter part, 321a ... Inner surface, 322 ... Large inner diameter part, 322a ... Inner surface, 511 ... Small inner diameter part, 511a ... Inner surface, 512 ... Large inner diameter portion 512a ... inner surface 512b ... recessed portion 512c ... opposite end surface 521 ... first element 522 ... second element 521a, 522a ... main body portion 521b, 522b ... 鍔, 521c, 522c ... projecting portion, 521d, 522d ... facing end surface, C ... central axis, S 1, S 2, S 3 ... clearance

Claims (6)

第１の筐体の内部に収容された第１の内部装置と、前記第１の筐体に隣接して配置された第２の筐体の内部に収容された第２の内部装置とを、前記第１の筐体に形成された第１の貫通孔及び前記第２の筐体に形成された第２の貫通孔を介して電気的に接続する電気接続構造であり、
前記第１の貫通孔及び前記第２の貫通孔に挿通されるケーブルと、
前記第１の貫通孔の内面と前記ケーブルの外面との間をシールする第１のシール部材と、
前記第２の貫通孔の内面と前記ケーブルの外面との間をシールする第２のシール部材と、
前記ケーブルの中心軸に沿って前記第１のシール部材と前記第２のシール部材との間に配置され、前記ケーブルを挿通させる中空のスペーサとを備え、
前記スペーサは、前記第１のシール部材側に配置された第１部材と前記第２のシール部材側に配置された第２部材とを有し、前記第１部材と前記第２部材とが、前記ケーブルの中心軸に対して交差する方向に相対移動可能であり、
前記スペーサは、前記第１部材及び第２部材の少なくとも一方に、互いに内径が異なる小内径部及び大内径部を有し、
前記小内径部は、その内面が前記ケーブルの外面に接することにより、当該小内径部内における前記ケーブルの屈曲を規制する内径を有し、
前記大内径部は、その内面と前記ケーブルの外面との間に隙間が形成されることにより、当該大内径部内における前記ケーブルの屈曲を許容する内径を有し、
前記大内径部が、前記小内径部よりも、前記第１部材と前記第２部材との対向端面側に配置されている、
電気接続構造。 A first internal device housed in the first housing and a second internal device housed in the second housing disposed adjacent to the first housing; An electrical connection structure for electrical connection through a first through hole formed in the first housing and a second through hole formed in the second housing;
A cable inserted through the first through hole and the second through hole;
A first seal member that seals between an inner surface of the first through hole and an outer surface of the cable;
A second seal member for sealing between the inner surface of the second through hole and the outer surface of the cable;
A hollow spacer that is disposed between the first seal member and the second seal member along the central axis of the cable and allows the cable to pass therethrough;
The spacer includes a first member disposed on the first seal member side and a second member disposed on the second seal member side, and the first member and the second member are: Ri movable relative der in a direction intersecting with the central axis of the cable,
The spacer has, on at least one of the first member and the second member, a small inner diameter portion and a large inner diameter portion having different inner diameters,
The small inner diameter portion has an inner diameter that regulates bending of the cable in the small inner diameter portion by contacting the outer surface of the cable with the inner surface thereof,
The large inner diameter portion has an inner diameter that allows bending of the cable in the large inner diameter portion by forming a gap between the inner surface and the outer surface of the cable,
The large inner diameter portion is disposed closer to the opposing end face side of the first member and the second member than the small inner diameter portion.
Electrical connection structure. 前記第１の貫通孔の内径と前記第２の貫通孔の内径とが異なる、
請求項１に記載の電気接続構造。 The inner diameter of the first through hole is different from the inner diameter of the second through hole.
The electrical connection structure according to claim 1. 第１の筐体の内部に収容された第１の内部装置と、前記第１の筐体に隣接して配置された第２の筐体の内部に収容された第２の内部装置とを、前記第１の筐体に形成された第１の貫通孔及び前記第２の筐体に形成された第２の貫通孔を介して電気的に接続する電気接続構造であり、
前記第１の貫通孔及び前記第２の貫通孔に挿通されるケーブルと、
前記第１の貫通孔の内面と前記ケーブルの外面との間をシールする第１のシール部材と、
前記第２の貫通孔の内面と前記ケーブルの外面との間をシールする第２のシール部材と、
前記ケーブルの中心軸に沿って前記第１のシール部材と前記第２のシール部材との間に配置され、前記ケーブルを挿通させる中空のスペーサとを備え、
前記スペーサは、前記第１のシール部材側に配置された第１部材と前記第２のシール部材側に配置された第２部材とを有し、前記第１部材と前記第２部材とが、前記ケーブルの中心軸に対して交差する方向に相対移動可能であり、
前記スペーサは、前記第１部材及び前記第２部材の一方に形成された凹部に、前記第１部材及び前記第２部材の他方に形成された凸部が係合することにより、前記第１部材及び前記第２部材の互いに離間する方向への移動が規制されている、
電気接続構造。 A first internal device housed in the first housing and a second internal device housed in the second housing disposed adjacent to the first housing; An electrical connection structure for electrical connection through a first through hole formed in the first housing and a second through hole formed in the second housing;
A cable inserted through the first through hole and the second through hole;
A first seal member that seals between an inner surface of the first through hole and an outer surface of the cable;
A second seal member for sealing between the inner surface of the second through hole and the outer surface of the cable;
A hollow spacer that is disposed between the first seal member and the second seal member along the central axis of the cable and allows the cable to pass therethrough;
The spacer includes a first member disposed on the first seal member side and a second member disposed on the second seal member side, and the first member and the second member are: Is movable relative to a direction intersecting the central axis of the cable;
The spacer has a concave portion formed on one of the first member and the second member, and a convex portion formed on the other of the first member and the second member engages with the first member. And movement of the second member in a direction away from each other is restricted,
Electrical connection structure. ケーブルを挿通させる第１及び第２のシール部材と、A first and a second seal member through which the cable is inserted;
前記ケーブルの中心軸に沿って前記第１のシール部材と前記第２のシール部材との間に配置され、前記ケーブルを挿通させる中空のスペーサとを備え、A hollow spacer that is disposed between the first seal member and the second seal member along the central axis of the cable and allows the cable to pass therethrough;
前記スペーサは、前記第１のシール部材側に配置された第１部材と前記第２のシール部材側に配置された第２部材とを有し、前記第１部材と前記第２部材とが、前記ケーブルの中心軸に対して交差する方向に相対移動可能であり、The spacer includes a first member disposed on the first seal member side and a second member disposed on the second seal member side, and the first member and the second member are: Is movable relative to a direction intersecting the central axis of the cable;
前記スペーサは、前記第１部材及び第２部材の少なくとも一方に、互いに内径が異なる小内径部及び大内径部を有し、The spacer has, on at least one of the first member and the second member, a small inner diameter portion and a large inner diameter portion having different inner diameters,
前記小内径部は、その内面が前記ケーブルの外面に接することにより、当該小内径部内における前記ケーブルの屈曲を規制する内径を有し、The small inner diameter portion has an inner diameter that regulates bending of the cable in the small inner diameter portion by contacting the outer surface of the cable with the inner surface thereof,
前記大内径部は、その内面と前記ケーブルの外面との間に隙間が形成されることにより、当該大内径部内における前記ケーブルの屈曲を許容する内径を有し、The large inner diameter portion has an inner diameter that allows bending of the cable in the large inner diameter portion by forming a gap between the inner surface and the outer surface of the cable,
前記大内径部が、前記小内径部よりも、前記第１部材と前記第２部材との対向端面側に配置されている、The large inner diameter portion is disposed closer to the opposing end face side of the first member and the second member than the small inner diameter portion.
シール装置。Sealing device. ケーブルを挿通させる第１及び第２のシール部材と、
前記ケーブルの中心軸に沿って前記第１のシール部材と前記第２のシール部材との間に
配置され、前記ケーブルを挿通させる中空のスペーサとを備え、
前記スペーサは、前記第１のシール部材側に配置された第１部材と前記第２のシール部
材側に配置された第２部材とを有し、前記第１部材と前記第２部材とが、前記ケーブルの
中心軸に対して交差する方向に相対移動可能であり、
前記スペーサは、前記第１部材及び前記第２部材の一方に形成された凹部に、前記第１部材及び前記第２部材の他方に形成された凸部が係合することにより、前記第１部材及び前記第２部材の互いに離間する方向への移動が規制されている、
シール装置。 A first and a second seal member through which the cable is inserted;
A hollow spacer that is disposed between the first seal member and the second seal member along the central axis of the cable and allows the cable to pass therethrough;
The spacer includes a first member disposed on the first seal member side and a second member disposed on the second seal member side, and the first member and the second member are: Ri movable relative der in a direction intersecting with the central axis of the cable,
The spacer has a concave portion formed on one of the first member and the second member, and a convex portion formed on the other of the first member and the second member engages with the first member. And movement of the second member in a direction away from each other is restricted,
Sealing device. 直流電力を交流電力に変換する電力変換装置、及び前記電力変換装置を収容するインバータケースを有するインバータと、
前記電力変換装置によって変換された前記交流電力によって磁力を発生する固定子、及び前記固定子を収容し、前記インバータケースに一体化されたモータケースを有するモータと、
前記電力変換装置と前記固定子とを、前記インバータケースに形成された第１の貫通孔及び前記モータケースに形成された第２の貫通孔を介して電気的に接続する接続部材とを備え、
前記接続部材は、
ケーブルと、
前記第１の貫通孔の内面と前記ケーブルの外面との間をシールする第１のシール部材と、
前記第２の貫通孔の内面と前記ケーブルの外面との間をシールする第２のシール部材と、
前記ケーブルの中心軸に沿って前記第１のシール部材と前記第２のシール部材との間に配置され、前記ケーブルを挿通させる中空のスペーサとを有し、
前記スペーサは、前記第１のシール部材側に配置された第１部材と前記第２のシール部材側に配置された第２部材とを有し、前記第１部材と前記第２部材とが、前記ケーブルの中心軸に対して交差する方向に相対移動可能であり、
前記スペーサは、前記第１部材及び第２部材の少なくとも一方に、互いに内径が異なる小内径部及び大内径部を有し、
前記小内径部は、その内面が前記ケーブルの外面に接することにより、当該小内径部内における前記ケーブルの屈曲を規制する内径を有し、
前記大内径部は、その内面と前記ケーブルの外面との間に隙間が形成されることにより、当該大内径部内における前記ケーブルの屈曲を許容する内径を有し、
前記大内径部が、前記小内径部よりも、前記第１部材と前記第２部材との対向端面側に配置されている、
インバータ一体型モータ。 A power converter that converts DC power into AC power, and an inverter having an inverter case that houses the power converter;
A stator that generates magnetic force by the AC power converted by the power converter, and a motor that houses the stator and has a motor case integrated with the inverter case;
A connecting member that electrically connects the power converter and the stator via a first through hole formed in the inverter case and a second through hole formed in the motor case;
The connecting member is
Cable and
A first seal member that seals between an inner surface of the first through hole and an outer surface of the cable;
A second seal member for sealing between the inner surface of the second through hole and the outer surface of the cable;
A hollow spacer that is disposed between the first seal member and the second seal member along the central axis of the cable and through which the cable is inserted;
The spacer includes a first member disposed on the first seal member side and a second member disposed on the second seal member side, and the first member and the second member are: Ri movable relative der in a direction intersecting with the central axis of the cable,
The spacer has, on at least one of the first member and the second member, a small inner diameter portion and a large inner diameter portion having different inner diameters,
The small inner diameter portion has an inner diameter that regulates bending of the cable in the small inner diameter portion by contacting the outer surface of the cable with the inner surface thereof,
The large inner diameter portion has an inner diameter that allows bending of the cable in the large inner diameter portion by forming a gap between the inner surface and the outer surface of the cable,
The large inner diameter portion is disposed closer to the opposing end face side of the first member and the second member than the small inner diameter portion.
Inverter integrated motor.
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