JP2009171686A - Motor and method of manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motor wherein a closing member can be easily attached to a gear housing, and to provide a method of manufacturing the same. <P>SOLUTION: The motor includes: the gear housing 21 having a substantially cylindrical wheel housing portion 21c for housing a worm wheel for decelerating the rotation of a rotating shaft and coupled with a motor section; and a cover 24 attached to the gear housing 21 and closing the opening A of the wheel housing portion 21c. The cover 24 includes a locking portion 27 that is engaged with the gear housing 21 (slope 26a) when the cover 24 is assembled to the gear housing 21 and elastically pushed and extended in the direction of the radius of the wheel housing portion 21c. When assembled, the locking portion is anchored to the gear housing 21 (anchoring recess 26b) by elastic recovery. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、モータ及びその製造方法に関するものである。   The present invention relates to a motor and a manufacturing method thereof.

従来、回転軸を有するモータ部と、該回転軸の回転を減速する減速機構を有する減速部とを一体的に備えるモータとして種々のものが知られている（例えば特許文献１など）。図８は、こうした従来のモータの減速部を示す分解斜視図である。同図に示されるように、このモータの減速部は、減速機構を構成するギヤ（図示略）が収容される略円筒形状のギヤ収容部９２を有してモータ部に連結されるギヤハウジング９１と、ギヤハウジング９１に取り付けられギヤ収容部９２の開口９２ａを閉塞する円盤状の閉塞部材９３とを備える。   2. Description of the Related Art Conventionally, various motors are known that integrally include a motor unit having a rotating shaft and a speed reducing unit having a speed reducing mechanism that decelerates rotation of the rotating shaft (for example, Patent Document 1). FIG. 8 is an exploded perspective view showing a reduction portion of such a conventional motor. As shown in the figure, the speed reduction portion of this motor has a gear housing 91 having a substantially cylindrical gear housing portion 92 in which a gear (not shown) constituting the speed reduction mechanism is housed and coupled to the motor portion. And a disc-shaped closing member 93 that is attached to the gear housing 91 and closes the opening 92a of the gear housing portion 92.

ギヤ収容部９２の外周部には、その径方向外側に突設された係合凸部９４が形成されている。一方、閉塞部材９３の外周部には、前記係合凸部９４に対向する周方向の位置でその径方向外側にＬ字形状で突設された係合片９５が形成されている。そして、閉塞部材９３は、ギヤ収容部９２上で係合片９５及び係合凸部９４の周方向の位置を一致させた状態でギヤ収容部９２の外周に嵌合され、係合片９５が係合凸部９４にかしめられることでギヤ収容部９２（ギヤハウジング９１）に固定される。
特開２００２−２６２５１６号公報 On the outer peripheral portion of the gear accommodating portion 92, an engaging convex portion 94 is formed so as to protrude outward in the radial direction. On the other hand, an engaging piece 95 is formed on the outer peripheral portion of the closing member 93 so as to project in an L shape outwardly in the radial direction at a circumferential position facing the engaging convex portion 94. Then, the closing member 93 is fitted on the outer periphery of the gear housing portion 92 with the engagement piece 95 and the engagement convex portion 94 being aligned in the circumferential direction on the gear housing portion 92. It is fixed to the gear housing portion 92 (gear housing 91) by being caulked by the engaging convex portion 94.
JP 2002-262516 A

ところで、このようにギヤハウジング９１に対する閉塞部材９３の固定にかしめ構造を採用する従来のモータでは、係合凸部９４の配設されるギヤハウジング９１に、かしめに係る治具の可動する部分を逃がすための領域を確保する必要があることから、該ギヤハウジング９１の形状が制約され、ひいてはギヤハウジング９１に対する閉塞部材９３の取り付け作業の煩雑化を余儀なくされてしまう。   By the way, in the conventional motor that employs the caulking structure for fixing the closing member 93 to the gear housing 91 as described above, the gear housing 91 in which the engagement convex portion 94 is disposed is provided with a movable part of the caulking jig. Since it is necessary to secure an area for escape, the shape of the gear housing 91 is restricted, and as a result, the mounting work of the closing member 93 to the gear housing 91 is complicated.

本発明の目的は、ギヤハウジングに対する閉塞部材の取り付け作業を容易に行うことができるモータ及びその製造方法を提供することにある。   An object of the present invention is to provide a motor and a method for manufacturing the motor that can easily perform the attaching operation of the closing member to the gear housing.

上記問題点を解決するために、請求項１に記載の発明は、回転軸を有するモータ部と、該回転軸の回転を減速するギヤが収容される略円筒形状のギヤ収容部を有して前記モータ部に連結されるギヤハウジングと、前記ギヤハウジングに取り付けられ前記ギヤ収容部の開口を閉塞する閉塞部材とを備えるモータにおいて、前記閉塞部材は、該閉塞部材を前記ギヤハウジングに組み付ける際に該ギヤハウジングと係合して前記ギヤ収容部の径方向又は前記ギヤの軸方向に弾性的に押し広げられると共に組み付け状態で弾性復帰に伴い前記ギヤハウジングに係止する係止部を備えたことを要旨とする。   In order to solve the above problems, the invention according to claim 1 includes a motor portion having a rotating shaft and a substantially cylindrical gear housing portion in which a gear for reducing the rotation of the rotating shaft is housed. In a motor comprising a gear housing coupled to the motor portion and a closing member attached to the gear housing and closing the opening of the gear housing portion, the closing member is used when the closing member is assembled to the gear housing. A locking portion that engages with the gear housing and elastically pushes and expands in the radial direction of the gear housing portion or the axial direction of the gear and that locks with the gear housing upon elastic return in the assembled state is provided. Is the gist.

同構成によれば、前記係止部は、前記閉塞部材を前記ギヤハウジングに組み付ける際に該ギヤハウジングと係合して前記ギヤ収容部の径方向又は前記ギヤの軸方向に弾性的に押し広げられると共に、組み付け状態で弾性復帰に伴い該ギヤハウジングに係止するため、前記ギヤハウジングに対する前記閉塞部材の取り付け作業を容易に行うことができる。   According to this configuration, the engaging portion engages with the gear housing when the closing member is assembled to the gear housing and elastically expands in the radial direction of the gear housing portion or the axial direction of the gear. In addition, since it is locked to the gear housing as it is elastically restored in the assembled state, it is possible to easily perform the operation of attaching the closing member to the gear housing.

請求項２に記載の発明は、請求項１に記載のモータにおいて、前記閉塞部材は、前記開口を覆うカバー部と、該カバー部の周囲に立設され前記ギヤ収容部の外周に嵌合するフランジ部とを有し、前記係止部は、前記フランジ部に設けられていることを要旨とする。   According to a second aspect of the present invention, in the motor according to the first aspect, the blocking member includes a cover portion that covers the opening and a periphery of the cover portion, and is fitted to the outer periphery of the gear housing portion. It has a flange portion, and the gist is that the locking portion is provided on the flange portion.

同構成によれば、フランジ部によりカバー部が補強されると共に、ギヤ収容部の外周に対するフランジ部の嵌合によって該ギヤ収容部の径方向における前記閉塞部材の位置決めが可能となる。又、このフランジ部に係止部を設けることで、閉塞部材をギヤハウジングに強固に固定することができる。   According to this configuration, the cover portion is reinforced by the flange portion, and the closing member can be positioned in the radial direction of the gear housing portion by fitting the flange portion to the outer periphery of the gear housing portion. Moreover, the closure member can be firmly fixed to the gear housing by providing a locking portion on the flange portion.

請求項３に記載の発明は、請求項１又は２に記載のモータにおいて、前記閉塞部材は、該閉塞部材を前記ギヤハウジングに組み付ける際に前記ギヤ収容部の周方向に回転しつつ前記係止部を前記ギヤ収容部の径方向又は前記ギヤの軸方向に弾性的に押し広げ、組み付け状態で前記係止部の弾性復帰に伴い該係止部を前記周方向及び前記軸方向で前記ギヤハウジングに係止することを要旨とする。   According to a third aspect of the present invention, in the motor according to the first or second aspect, the closing member rotates in the circumferential direction of the gear housing portion when the closing member is assembled to the gear housing. The gear housing is elastically expanded in the radial direction of the gear receiving portion or the axial direction of the gear, and the locking portion is moved in the circumferential direction and the axial direction as the locking portion is elastically restored in the assembled state. The gist is to be locked.

同構成によれば、閉塞部材を回転させるだけで係止部をギヤ収容部の周方向及びギヤの軸方向で前記ギヤハウジングに係止できるため、閉塞部材の取り付け作業を更に容易に行うことができる。   According to this configuration, since the locking portion can be locked to the gear housing in the circumferential direction of the gear housing portion and the axial direction of the gear simply by rotating the closing member, the mounting operation of the closing member can be performed more easily. it can.

請求項４に記載の発明は、請求項１〜３のいずれか一項に記載のモータにおいて、前記閉塞部材及び該閉塞部材に対向する前記ギヤ収容部の周囲の間にシール部材を介装したことを要旨とする。   According to a fourth aspect of the present invention, in the motor according to any one of the first to third aspects, a sealing member is interposed between the closing member and the periphery of the gear housing portion facing the closing member. This is the gist.

同構成によれば、前記閉塞部材及び該閉塞部材に対向する前記ギヤ収容部の周囲の間にシール部材を介装したことで、これら閉塞部材及びギヤ収容部間の防水性を確保することができる。特に、請求項３に記載の構成にこの構成が適用されることで、閉塞部材をギヤ収容部の周方向に回転させる際にシール部材が当該方向により均等になるように馴染むため、防水性がより確実に確保されるといった作用効果も得られるようになる。   According to this configuration, the sealing member is interposed between the closing member and the periphery of the gear housing portion facing the closing member, thereby ensuring waterproofness between the closing member and the gear housing portion. it can. In particular, when this configuration is applied to the configuration according to claim 3, when the closing member is rotated in the circumferential direction of the gear housing portion, the seal member is adapted to become more uniform in the direction. The effect of ensuring more reliably can also be obtained.

請求項５に記載の発明は、請求項１〜４のいずれか一項に記載のモータにおいて、前記ギヤハウジングには係合凹部が形成されており、前記係止部は、組み付け状態で前記係合凹部に嵌入して前記ギヤハウジングに係止することを要旨とする。   According to a fifth aspect of the present invention, in the motor according to any one of the first to fourth aspects, an engagement recess is formed in the gear housing, and the locking portion is in the assembled state. The gist of the present invention is to engage with the gear housing by fitting into the mating recess.

同構成によれば、ギヤハウジングに設けた係合凹部に係止部を嵌入させる極めて簡易な構造で、該係止部をギヤハウジングに係止することができる。
請求項６に記載の発明は、請求項１〜５のいずれか一項に記載のモータにおいて、前記ギヤハウジングにはガイド面が形成されており、前記係止部は、前記閉塞部材を前記ギヤハウジングに組み付ける際に前記ガイド面に圧接して前記ギヤ収容部の径方向又は前記ギヤの軸方向に弾性的に押し広げられることを要旨とする。 According to this configuration, the locking portion can be locked to the gear housing with a very simple structure in which the locking portion is fitted into the engagement recess provided in the gear housing.
According to a sixth aspect of the present invention, in the motor according to any one of the first to fifth aspects, a guide surface is formed on the gear housing, and the locking portion is configured to connect the closing member to the gear. The gist of the present invention is that when being assembled to the housing, it is pressed against the guide surface and elastically expanded in the radial direction of the gear accommodating portion or the axial direction of the gear.

同構成によれば、ギヤハウジングに設けたガイド面に係止部を圧接させる極めて簡易な構造で、該係止部をギヤ収容部の径方向又はギヤの軸方向に弾性的に押し広げることができる。   According to this configuration, the locking portion can be elastically pushed in the radial direction of the gear housing portion or the axial direction of the gear with an extremely simple structure in which the locking portion is pressed against the guide surface provided in the gear housing. it can.

請求項７に記載の発明は、回転軸を有するモータ部と、該回転軸の回転を減速するギヤが収容される略円筒形状のギヤ収容部を有して前記モータ部に連結されるギヤハウジングと、前記ギヤハウジングに取り付けられ前記ギヤ収容部の開口を閉塞する閉塞部材とを備えるモータの製造方法において、前記閉塞部材は、係止部を備え、前記閉塞部材を前記ギヤハウジングに組み付ける際に前記ギヤ収容部の周方向に回転させつつ前記係止部を前記ギヤハウジングと係合させて該係止部を前記ギヤ収容部の径方向又は前記ギヤの軸方向に弾性的に押し広げ、前記閉塞部材の前記ギヤハウジングに対する固定位置で前記係止部を弾性復帰させて該係止部を前記周方向及び前記軸方向で前記ギヤハウジングに係止し、前記閉塞部材を前記ギヤハウジングに固定することを要旨とする。   According to a seventh aspect of the present invention, there is provided a gear housing having a motor portion having a rotating shaft and a substantially cylindrical gear housing portion in which a gear for reducing the rotation of the rotating shaft is housed and coupled to the motor portion. And a closing member that is attached to the gear housing and closes the opening of the gear housing portion, wherein the closing member includes a locking portion, and when the closing member is assembled to the gear housing. The locking portion is engaged with the gear housing while rotating in the circumferential direction of the gear housing portion, and the locking portion is elastically expanded in the radial direction of the gear housing portion or the axial direction of the gear, The locking portion is elastically returned at a fixed position of the closing member with respect to the gear housing, and the locking portion is locked to the gear housing in the circumferential direction and the axial direction, and the blocking member is connected to the gear housing. And summarized in that fixed to.

同構成によれば、閉塞部材を回転させるだけで係止部をギヤ収容部の周方向及びギヤの軸方向で前記ギヤハウジングに係止できるため、閉塞部材の取り付け作業を更に容易に行うことができる。   According to this configuration, since the locking portion can be locked to the gear housing in the circumferential direction of the gear housing portion and the axial direction of the gear simply by rotating the closing member, the mounting operation of the closing member can be performed more easily. it can.

本発明によれば、ギヤハウジングに対する閉塞部材の取り付け作業を容易に行うことができるモータ及びその製造方法を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the motor which can perform the attachment operation | work of the closure member with respect to a gear housing easily, and its manufacturing method can be provided.

（第１の実施の形態）
以下、本発明を具体化した第１の実施の形態を図面に従って説明する。
図１は、例えば車両用パワーウインド装置に用いられるギヤードモータ１を分解して示す平面図である。同図に示されるように、このギヤードモータ１は、回転駆動するモータ部２と、該モータ部２にて生じる回転を減速出力する減速部３とが一体に組み付けられて構成される。 (First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded plan view showing a geared motor 1 used in, for example, a vehicle power window device. As shown in FIG. 1, the geared motor 1 is configured by integrally assembling a motor unit 2 that rotates and a speed reduction unit 3 that decelerates and outputs the rotation generated in the motor unit 2.

モータ部２は、磁性金属材料よりなる有底筒状のヨークハウジング４と、該ヨークハウジング４内面に固定された複数のマグネット５と、ヨークハウジング４内で回転可能に支持された電機子６と、ブラシホルダ７と、該ブラシホルダ７に保持される一対のブラシ（図示略）とを備えている。そして、電機子６は、回転軸８と、該回転軸８に固着された整流子９とを備えて構成されている。   The motor unit 2 includes a bottomed cylindrical yoke housing 4 made of a magnetic metal material, a plurality of magnets 5 fixed to the inner surface of the yoke housing 4, and an armature 6 rotatably supported in the yoke housing 4. The brush holder 7 and a pair of brushes (not shown) held by the brush holder 7 are provided. The armature 6 includes a rotating shaft 8 and a commutator 9 fixed to the rotating shaft 8.

ブラシホルダ７は、樹脂材料よりなり、その保持するブラシをヨークハウジング４の開口部内に収容するホルダ本体７ａを有すると共に、該ヨークハウジング４の一側（図中、左側）に並設される段付き箱状の基板収容部７ｂを有する。この基板収容部７ｂには、ウインドガラスの位置を検出するためのパルスセンサや制御コントローラの実装された回路基板１１が収容される。これらパルスセンサや制御コントローラは、例えばウインドガラスによる挟み込みを防止するためのものである。この回路基板１１は、パルスセンサや制御コントローラと外部回路との間、あるいはブラシと外部電源との間を電気的に接続するための複数の接続端子１１ａを有する。   The brush holder 7 is made of a resin material, has a holder main body 7a that accommodates the brush to be held in the opening of the yoke housing 4, and is arranged in parallel with one side (left side in the drawing) of the yoke housing 4. It has a box-like substrate housing portion 7b. The circuit board 11 on which a pulse sensor and a controller for detecting the position of the window glass are mounted is accommodated in the circuit board accommodating portion 7b. These pulse sensors and controller are for preventing pinching by, for example, window glass. The circuit board 11 has a plurality of connection terminals 11a for electrically connecting a pulse sensor or a controller and an external circuit, or between a brush and an external power source.

減速部３は、その外形をなすギヤハウジング２１と、ウォーム軸２２と、ギヤとしてのウォームホイール２３と、閉塞部材としてのカバー２４と、ウォームホイール２３と一体回転するように同軸上に連結されてカバー２４の反対側に突出する出力軸（図示略）とを備える。尚、本実施の形態では、ウォーム軸２２とウォームホイール２３とが減速機構を構成している。   The speed reduction unit 3 is coaxially connected so as to rotate integrally with the gear housing 21 that forms the outer shape, the worm shaft 22, the worm wheel 23 as a gear, the cover 24 as a closing member, and the worm wheel 23. And an output shaft (not shown) protruding to the opposite side of the cover 24. In the present embodiment, the worm shaft 22 and the worm wheel 23 constitute a speed reduction mechanism.

ギヤハウジング２１は、樹脂製であって、一体成形された固定部２１ａと、ウォーム収容部２１ｂと、ギヤ収容部としてのホイール収容部２１ｃとを備える。
固定部２１ａは、ブラシホルダ７（ホルダ本体７ａ及び基板収容部７ｂ）に対向配置されており、ホルダ本体７ａ側でこれを介在させる態様でヨークハウジング４に締結されると共に、基板収容部７ｂ側でこれに締結される。 The gear housing 21 is made of resin, and includes a fixed portion 21a, a worm housing portion 21b, and a wheel housing portion 21c as a gear housing portion.
The fixing portion 21a is disposed opposite to the brush holder 7 (the holder main body 7a and the substrate housing portion 7b), and is fastened to the yoke housing 4 in a manner of interposing it on the holder main body 7a side, and also on the substrate housing portion 7b side. It is concluded with this.

ウォーム収容部２１ｂは、前記回転軸８の延長線上で筒状に延びて形成され、その内部にウォーム軸２２を回転可能に支持する。尚、ウォーム軸２２は、クラッチ（図示略）を介して回転軸８に駆動連結されている。このクラッチは、負荷側から加わる力による回転軸８の回転を防止するためのものである。   The worm accommodating portion 21b is formed to extend in a cylindrical shape on the extension line of the rotary shaft 8, and supports the worm shaft 22 in a rotatable manner therein. The worm shaft 22 is drivingly connected to the rotary shaft 8 via a clutch (not shown). This clutch is for preventing rotation of the rotating shaft 8 due to a force applied from the load side.

ホイール収容部２１ｃは、ウォームホイール２３の外径よりも大きい内径を有する略有底円筒形状に成形されており（図２参照）、その内部にウォームホイール２３を回転可能に支持する。尚、ウォーム収容部２１ｂとホイール収容部２１ｃとはその内部が一部で連通し、該連通部分でウォーム軸２２とウォームホイール２３とが歯合される。   The wheel accommodating portion 21c is formed in a substantially bottomed cylindrical shape having an inner diameter larger than the outer diameter of the worm wheel 23 (see FIG. 2), and supports the worm wheel 23 rotatably therein. The worm accommodating portion 21b and the wheel accommodating portion 21c are partially communicated with each other, and the worm shaft 22 and the worm wheel 23 are engaged with each other at the communicating portion.

尚、ウォームホイール２３に連結される前述の出力軸は、ウインドガラスを開閉するためのウインドレギュレータに駆動連結される。つまり、モータ部２の駆動により回転軸８が回転すると、ウォーム軸２２及びウォームホイール２３を介して出力軸に駆動力が伝達されて該出力軸が回転し、ウインドレギュレータが作動してウインドガラスが開閉するようになっている。   The output shaft connected to the worm wheel 23 is drivingly connected to a window regulator for opening and closing the window glass. That is, when the rotating shaft 8 is rotated by driving the motor unit 2, the driving force is transmitted to the output shaft through the worm shaft 22 and the worm wheel 23, the output shaft is rotated, the window regulator is operated, and the window glass is moved. It opens and closes.

図２の斜視図で示すように、カバー２４は、金属製であって、ホイール収容部２１ｃの開口Ａを覆う円盤状のカバー部２４ａと、ウォーム収容部２１ｂの外径と同等の内径を有してカバー部２４ａの周囲に立設された円筒状のフランジ部２４ｂとを有する。カバー２４は、ホイール収容部２１ｃ（ギヤハウジング２１）に取り付けられてその開口Ａを閉塞する。   As shown in the perspective view of FIG. 2, the cover 24 is made of metal and has an inner diameter equivalent to the outer diameter of the disc-shaped cover portion 24a covering the opening A of the wheel accommodating portion 21c and the worm accommodating portion 21b. And a cylindrical flange portion 24b erected around the cover portion 24a. The cover 24 is attached to the wheel accommodating portion 21c (gear housing 21) and closes the opening A thereof.

ここで、ギヤハウジング２１（ホイール収容部２１ｃ）及びカバー２４の固定構造について図２及び図３に基づき更に説明する。尚、図３は、ホイール収容部２１ｃ（ギヤハウジング２１）に対するカバー２４の取り付け態様を模式的に示す平面図である。   Here, the fixing structure of the gear housing 21 (wheel accommodating portion 21c) and the cover 24 will be further described with reference to FIGS. FIG. 3 is a plan view schematically showing how the cover 24 is attached to the wheel accommodating portion 21c (gear housing 21).

ホイール収容部２１ｃは、その外周２１ｄの周方向における所定位置で径方向外側に台状に突設された突部２６を有する。この突部２６は、周方向一側（図中、反時計回転方向に向かう側）に外周２１ｄとの径方向の段差を緩やかに吸収するガイド面としての傾斜面２６ａを形成すると共に、周方向他側（図中、時計回転方向に向かう側）に径方向内側に凹設された係合凹部２６ｂを形成する。尚、係合凹部２６ｂは、その上側の内壁面２６ｃにより上方（ホイール収容部２１ｃの開口方向であってウォームホイール２３の軸方向）への連通が遮断されている。   The wheel accommodating portion 21c has a protruding portion 26 that protrudes in a table shape radially outward at a predetermined position in the circumferential direction of the outer periphery 21d. The protrusion 26 forms an inclined surface 26a as a guide surface that gently absorbs a radial step with respect to the outer periphery 21d on one side in the circumferential direction (the side facing the counterclockwise direction in the drawing), and in the circumferential direction. An engaging recess 26b that is recessed radially inward is formed on the other side (the side facing the clockwise direction in the drawing). The engaging recess 26b is blocked from communicating upward (in the opening direction of the wheel accommodating portion 21c and in the axial direction of the worm wheel 23) by the upper inner wall surface 26c.

一方、カバー２４のフランジ部２４ｂは、係合凹部２６ｂ（突部２６）の周方向の位置及び高さ位置に合わせて押し出される態様で径方向内側に突設された係止部２７を有する。   On the other hand, the flange portion 24b of the cover 24 has a locking portion 27 that protrudes radially inward in such a manner that the flange portion 24b is pushed out in accordance with the circumferential position and height position of the engagement recess 26b (projection 26).

このような構成にあって、カバー２４をホイール収容部２１ｃに固定する際には、該カバー２４（カバー部２４ａ）がホイール収容部２１ｃと同心になるようにその上方に配置し、更に周方向において係止部２７の位置を傾斜面２６ａの外周２１ｄに繋がる基端位置に一致させる。そして、カバー２４をホイール収容部２１ｃに組み付ける際には、この配置関係を保持した状態でカバー２４を下降させてフランジ部２４ｂに外周２１ｄを挿入・嵌合する。   In such a configuration, when the cover 24 is fixed to the wheel housing portion 21c, the cover 24 (cover portion 24a) is disposed above the wheel housing portion 21c so as to be concentric with the wheel housing portion 21c. The position of the locking portion 27 is made to coincide with the base end position connected to the outer periphery 21d of the inclined surface 26a. Then, when the cover 24 is assembled to the wheel accommodating portion 21c, the cover 24 is lowered with this arrangement relationship maintained, and the outer periphery 21d is inserted and fitted into the flange portion 24b.

続いて、ホイール収容部２１ｃに対しその周方向にカバー２４を図中、時計回転方向に回転させると、係止部２７は、傾斜面２６ａに案内される態様でこれに圧接してホイール収容部２１ｃの径方向外側に弾性的に押し広げられる。そして、係止部２７が係合凹部２６ｂの位置（固定位置）に達すると、係止部２７は、弾性復帰に伴い係合凹部２６ｂに嵌入してホイール収容部２１ｃに係止する。つまり、組み付け状態では、係止部２７は、係合凹部２６ｂに嵌入することで、該係合凹部２６ｂの周方向両内壁面によって当該方向でホイール収容部２１ｃに係止すると共に、内壁面２６ｃによってホイール収容部２１ｃの開口方向（ウォームホイール２３の軸方向）で該ホイール収容部２１ｃに係止する。これにより、カバー２４がホイール収容部２１ｃ（ギヤハウジング２１）に固定される。   Subsequently, when the cover 24 is rotated in the clockwise direction in the figure with respect to the wheel housing portion 21c, the locking portion 27 is pressed against the wheel housing portion in a manner guided by the inclined surface 26a. It is elastically pushed outward in the radial direction of 21c. And when the latching | locking part 27 reaches the position (fixed position) of the engagement recessed part 26b, the latching | locking part 27 will be fitted in the engagement recessed part 26b with an elastic return, and will be latched by the wheel accommodating part 21c. That is, in the assembled state, the engaging portion 27 is fitted into the engaging recess 26b, thereby being locked to the wheel accommodating portion 21c in the direction by both inner wall surfaces in the circumferential direction of the engaging recess 26b, and the inner wall surface 26c. Thus, the wheel accommodating portion 21c is locked in the opening direction of the wheel accommodating portion 21c (the axial direction of the worm wheel 23). Thereby, the cover 24 is fixed to the wheel accommodating part 21c (gear housing 21).

尚、カバー２４及び該カバー２４に対向するホイール収容部２１ｃの周囲の間には、シール部材が介装されている。このシール部材は、周囲にブチルゴムを塗布したホイール収容部２１ｃにカバー２４を被せ、組み付けに際し前述の態様でカバー２４を回転させることで、周方向に馴染んだブチルゴムとして形成される。このシール部材により、ホイール収容部２１ｃ及びカバー２４間の防水性が確保される。   A seal member is interposed between the cover 24 and the periphery of the wheel accommodating portion 21c facing the cover 24. This seal member is formed as a butyl rubber that is adapted to the circumferential direction by covering the wheel accommodating portion 21c coated with butyl rubber around the cover 24 and rotating the cover 24 in the above-described manner during assembly. By this seal member, waterproofness between the wheel accommodating portion 21c and the cover 24 is ensured.

以上詳述したように、本実施形態によれば、以下に示す効果が得られるようになる。
（１）係止部２７は、カバー２４をギヤハウジング２１に組み付ける際に該ギヤハウジング２１（傾斜面２６ａ）と係合してホイール収容部２１ｃの径方向に弾性的に押し広げられると共に、組み付け状態で弾性復帰に伴い該ギヤハウジング２１（係合凹部２６ｂ）に係止するため、ギヤハウジング２１に対するカバー２４の取り付け作業を容易に行うことができる。そして、かしめ構造を採用する従来例のようなギヤハウジング２１側の制約も軽減されることから、該ギヤハウジング２１の形状も簡素化することができ、設計の自由度も増大することができる。 As described above in detail, according to the present embodiment, the following effects can be obtained.
(1) When the cover 24 is assembled to the gear housing 21, the engaging portion 27 engages with the gear housing 21 (inclined surface 26a) and is elastically expanded in the radial direction of the wheel accommodating portion 21c. In this state, the cover 24 is locked to the gear housing 21 (engagement recess 26b) as it returns to elasticity, so that the cover 24 can be easily attached to the gear housing 21. Further, since the restriction on the side of the gear housing 21 as in the conventional example adopting the caulking structure is reduced, the shape of the gear housing 21 can be simplified, and the degree of freedom in design can be increased.

（２）カバー２４のカバー部２４ａは、フランジ部２４ｂにより補強されると共に、ホイール収容部２１ｃの外周２１ｄに対するフランジ部２４ｂの嵌合によって該ホイール収容部２１ｃの径方向におけるカバー２４の位置決めが可能となる。又、このフランジ部２４ｂに係止部２７を設けることで、カバー２４をギヤハウジング２１（ホイール収容部２１ｃ）に強固に固定することができる。   (2) The cover portion 24a of the cover 24 is reinforced by the flange portion 24b, and the cover 24 can be positioned in the radial direction of the wheel housing portion 21c by fitting the flange portion 24b to the outer periphery 21d of the wheel housing portion 21c. It becomes. Further, the cover 24 can be firmly fixed to the gear housing 21 (the wheel accommodating portion 21c) by providing the engaging portion 27 on the flange portion 24b.

（３）カバー２４を回転させるだけで係止部２７をホイール収容部２１ｃの周方向及び開口方向（ウォームホイール２３の軸方向）でギヤハウジング２１に係止できるため、カバー２４の取り付け作業を更に容易に行うことができる。   (3) Since the locking portion 27 can be locked to the gear housing 21 in the circumferential direction and the opening direction (the axial direction of the worm wheel 23) of the wheel housing portion 21c simply by rotating the cover 24, the mounting operation of the cover 24 is further performed. It can be done easily.

（４）特に、カバー２４をホイール収容部２１ｃの周方向に回転させる際にシール部材（ブチルゴム）が当該方向により均等になるように馴染むため、防水性をより確実に確保することができる。   (4) In particular, when the cover 24 is rotated in the circumferential direction of the wheel accommodating portion 21c, the seal member (butyl rubber) is adapted to become more uniform in the direction, so that the waterproof property can be ensured more reliably.

（５）カバー２４及び該カバー２４に対向するホイール収容部２１ｃの周囲の間にシール部材を介装したことで、これらカバー２４及びホイール収容部２１ｃ間の防水性を確保することができる。   (5) Since the seal member is interposed between the cover 24 and the periphery of the wheel housing portion 21c facing the cover 24, waterproofness between the cover 24 and the wheel housing portion 21c can be ensured.

（６）ギヤハウジング２１（ホイール収容部２１ｃ）に設けた係合凹部２６ｂに係止部２７を嵌入させる極めて簡易な構造で、該係止部２７をギヤハウジング２１に係止することができる。   (6) The locking portion 27 can be locked to the gear housing 21 with a very simple structure in which the locking portion 27 is fitted into the engaging recess 26b provided in the gear housing 21 (wheel housing portion 21c).

（７）ギヤハウジング２１（ホイール収容部２１ｃ）に設けた傾斜面２６ａに係止部２７を圧接させる極めて簡易な構造で、該係止部２７をホイール収容部２１ｃの径方向に弾性的に押し広げることができる。   (7) The locking portion 27 is elastically pushed in the radial direction of the wheel receiving portion 21c with an extremely simple structure in which the locking portion 27 is pressed against the inclined surface 26a provided in the gear housing 21 (the wheel receiving portion 21c). Can be spread.

（第２の実施の形態）
以下、本発明を具体化した第２の実施の形態を図面に従って説明する。なお、第２の実施の形態は、第１の実施の形態のギヤハウジング２１に対するカバー２４の組み付け態様を変更したのみの構成であるため、同様の構成については同一の符号を付してその説明を一部省略する。 (Second Embodiment)
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. In the second embodiment, since the configuration in which the cover 24 is assembled to the gear housing 21 of the first embodiment is merely changed, the same components are denoted by the same reference numerals and the description thereof is omitted. Is partially omitted.

図４及び図５は、ホイール収容部２１ｃ（ギヤハウジング２１）に対するカバー２４の取り付け態様を示す分解斜視図及び模式的に示す正面図である。同図に示されるように、本実施の形態において、ホイール収容部２１ｃは、開口Ａよりも下側となる外周２１ｄの周方向における所定位置で径方向外側に台状に突設された突部３１を有する。この突部３１の下面は、周方向一側（図中、反時計回転方向に向かう側）に当該方向に向かうに従いウォームホイール２３の軸方向（ホイール収容部２１ｃの開口方向）の板厚を薄くするガイド面としての傾斜面３１ａを形成すると共に、周方向他側（図中、時計回転方向に向かう側）にウォームホイール２３の軸方向に凹設された係合凹部３１ｂを形成する。この係合凹部３１ｂの上側の内壁面（最深部）３１ｃの高さ位置は、傾斜面３１ａの基端の高さ位置と同等に設定されている。尚、係合凹部３１ｂは、その内壁面３１ｃにより上方（ホイール収容部２１ｃの開口方向であってウォームホイール２３の軸方向）への連通が遮断されている。   FIGS. 4 and 5 are an exploded perspective view and a front view schematically showing how the cover 24 is attached to the wheel accommodating portion 21c (gear housing 21). As shown in the figure, in the present embodiment, the wheel accommodating portion 21c is a protruding portion that is projected in a trapezoidal shape radially outward at a predetermined position in the circumferential direction of the outer periphery 21d that is below the opening A. 31. The lower surface of the protrusion 31 has a reduced thickness in the axial direction of the worm wheel 23 (the opening direction of the wheel accommodating portion 21c) toward the circumferential direction one side (the side facing the counterclockwise direction in the drawing). An inclined surface 31a is formed as a guide surface to be engaged, and an engaging recess 31b that is recessed in the axial direction of the worm wheel 23 is formed on the other side in the circumferential direction (the side facing the clockwise direction in the drawing). The height position of the inner wall surface (deepest part) 31c on the upper side of the engagement recess 31b is set to be equal to the height position of the base end of the inclined surface 31a. The engagement recess 31b is blocked from communicating upward (in the opening direction of the wheel housing portion 21c and in the axial direction of the worm wheel 23) by the inner wall surface 31c.

一方、カバー２４のフランジ部２４ｂは、係合凹部３１ｂ（突部３１）の周方向の位置に合わせてその下端から径方向外側に突設されたコの字形状の係合片３２を有すると共に、該係合片３２の係合凹部３１ｂ（傾斜面３１ａの基端）の高さ位置に合わせて径方向内側に屈曲する先端は、係止部３２ａを形成する。尚、ホイール収容部２１ｃの径方向において、係合片３２の内壁面までの距離は、突部３１の外壁面までの距離よりも大きく設定されている。   On the other hand, the flange portion 24b of the cover 24 has a U-shaped engagement piece 32 that protrudes radially outward from its lower end in accordance with the circumferential position of the engagement recess 31b (projection 31). The distal end of the engagement piece 32 that is bent inward in the radial direction in accordance with the height position of the engagement recess 31b (the base end of the inclined surface 31a) forms a locking portion 32a. In the radial direction of the wheel accommodating portion 21c, the distance to the inner wall surface of the engagement piece 32 is set larger than the distance to the outer wall surface of the protrusion 31.

このような構成にあって、カバー２４をホイール収容部２１ｃに固定する際には、該カバー２４（カバー部２４ａ）がホイール収容部２１ｃと同心になるようにその上方に配置し、更に周方向において係止部３２ａの位置を傾斜面３１ａの基端位置に一致させる。そして、カバー２４をホイール収容部２１ｃに組み付ける際には、この配置関係を保持した状態でカバー２４を下降させてフランジ部２４ｂに外周２１ｄを挿入・嵌合する。   In such a configuration, when the cover 24 is fixed to the wheel housing portion 21c, the cover 24 (cover portion 24a) is arranged above the wheel housing portion 21c so as to be concentric, and further in the circumferential direction. The position of the locking part 32a is made to coincide with the base end position of the inclined surface 31a. Then, when the cover 24 is assembled to the wheel accommodating portion 21c, the cover 24 is lowered with this arrangement relationship maintained, and the outer periphery 21d is inserted and fitted into the flange portion 24b.

続いて、ホイール収容部２１ｃに対しその周方向にカバー２４を図中、時計回転方向に回転させると、係合片３２の突部３１への嵌合に伴いその係止部３２ａは、傾斜面３１ａに案内される態様でこれに圧接してウォームホイール２３の軸方向下側（ホイール収容部２１ｃの開口方向の反対側）に弾性的に押し広げられる。そして、係止部３２ａが係合凹部３１ｂの位置（固定位置）に達すると、係止部３２ａは、弾性復帰に伴い係合凹部３１ｂに嵌入してホイール収容部２１ｃに係止する。つまり、組み付け状態では、係止部３２ａは、係合凹部３１ｂに嵌入することで、該係合凹部３１ｂの周方向両内壁面によって当該方向でホイール収容部２１ｃに係止すると共に、内壁面３１ｃによってホイール収容部２１ｃの開口方向（ウォームホイール２３の軸方向）で該ホイール収容部２１ｃに係止する。これにより、カバー２４がホイール収容部２１ｃ（ギヤハウジング２１）に固定される。   Subsequently, when the cover 24 is rotated in the clockwise direction in the drawing with respect to the wheel housing portion 21c, the engaging portion 32a is inclined as the engaging piece 32 is fitted to the protrusion 31. In a manner guided by 31a, it is pressed against this and is elastically pushed to the lower side in the axial direction of the worm wheel 23 (opposite to the opening direction of the wheel accommodating portion 21c). And when the latching | locking part 32a reaches the position (fixed position) of the engagement recessed part 31b, the latching | locking part 32a will fit in the engagement recessed part 31b with an elastic return, and will latch to the wheel accommodating part 21c. In other words, in the assembled state, the locking portion 32a is fitted into the engaging recess 31b so as to be locked to the wheel accommodating portion 21c in this direction by the circumferential inner walls of the engaging recess 31b, and the inner wall 31c. Thus, the wheel accommodating portion 21c is locked in the opening direction of the wheel accommodating portion 21c (the axial direction of the worm wheel 23). Thereby, the cover 24 is fixed to the wheel accommodating part 21c (gear housing 21).

以上詳述したように、本実施形態によれば、前記第１の実施形態と同様の効果が得られるようになる。
（第３の実施の形態）
以下、本発明を具体化した第３の実施の形態を図面に従って説明する。なお、第３の実施の形態は、第１及び第２の実施の形態のギヤハウジング２１に対するカバー２４の組み付け態様を変更したのみの構成であるため、同様の構成については同一の符号を付してその説明を一部省略する。 As described above in detail, according to the present embodiment, the same effect as in the first embodiment can be obtained.
(Third embodiment)
Hereinafter, a third embodiment of the present invention will be described with reference to the drawings. In the third embodiment, the configuration of the cover 24 with respect to the gear housing 21 of the first and second embodiments is merely changed. Therefore, the same reference numerals are given to the same configurations. Part of the explanation is omitted.

図６及び図７は、ホイール収容部２１ｃ（ギヤハウジング２１）に対するカバー２４の取り付け態様を示す分解斜視図及び模式的に示す縦断面図である。同図に示されるように、本実施の形態において、ホイール収容部２１ｃは、開口Ａに隣接する外周２１ｄの周方向における所定位置で径方向外側に爪状に突設された突起３６を有する。この突起３６は、開口Ａからウォームホイール２３の軸方向下側（ホイール収容部２１ｃの開口方向の反対側）に向かうに従い径方向外側に徐々に突出するガイド面としての傾斜面３６ａを形成すると共に、下端が径方向内側に尖鋭に切り欠かれてなる係合部３６ｂを形成する。   6 and 7 are an exploded perspective view and a longitudinal sectional view schematically showing how the cover 24 is attached to the wheel accommodating portion 21c (gear housing 21). As shown in the figure, in the present embodiment, the wheel accommodating portion 21c has a protrusion 36 that protrudes in a claw shape radially outward at a predetermined position in the circumferential direction of the outer periphery 21d adjacent to the opening A. The projection 36 forms an inclined surface 36a as a guide surface that gradually protrudes radially outward from the opening A toward the lower side in the axial direction of the worm wheel 23 (opposite to the opening direction of the wheel housing portion 21c). The engaging portion 36b is formed with the lower end sharply cut out radially inward.

一方、カバー２４のフランジ部２４ｂは、係合部３６ｂ（突起３６）の周方向の位置に合わせてその下端からウォームホイール２３の軸方向下側に突設された鉤爪状の係止部３７を有する。尚、ホイール収容部２１ｃの径方向において、係止部３７の鉤爪形状の先端までの距離は、係合部３６ｂまでの距離と同等に設定されている。   On the other hand, the flange portion 24b of the cover 24 has a claw-like locking portion 37 protruding from the lower end in the axial direction of the worm wheel 23 in accordance with the circumferential position of the engaging portion 36b (projection 36). Have. In the radial direction of the wheel housing portion 21c, the distance to the claw-shaped tip of the locking portion 37 is set to be equal to the distance to the engaging portion 36b.

このような構成にあって、カバー２４をホイール収容部２１ｃに固定する際には、該カバー２４（カバー部２４ａ）がホイール収容部２１ｃと同心になるようにその上方に配置し、更に周方向において係止部３７の位置を突起３６に一致させる。   In such a configuration, when the cover 24 is fixed to the wheel housing portion 21c, the cover 24 (cover portion 24a) is disposed above the wheel housing portion 21c so as to be concentric with the wheel housing portion 21c. , The position of the locking portion 37 is made to coincide with the protrusion 36.

そして、カバー２４をホイール収容部２１ｃに組み付ける際には、この配置関係を保持した状態でカバー２４を下降させてフランジ部２４ｂに外周２１ｄを挿入・嵌合する。このとき、係止部３７は、傾斜面３６ａに案内される態様でこれに圧接してホイール収容部２１ｃの径方向外側に弾性的に押し広げられる。そして、係止部３７が係合部３６ｂの位置（固定位置）に達すると、係止部３７は、弾性復帰に伴い係合部３６ｂに嵌入（いわゆるスナップフィット）してホイール収容部２１ｃに係止する。つまり、組み付け状態では、係止部３７は、係合部３６ｂに嵌入することで、該係合部３６ｂによってホイール収容部２１ｃの開口方向（ウォームホイール２３の軸方向）で該ホイール収容部２１ｃに係止する。これにより、カバー２４がホイール収容部２１ｃ（ギヤハウジング２１）に固定される。   Then, when the cover 24 is assembled to the wheel accommodating portion 21c, the cover 24 is lowered with this arrangement relationship maintained, and the outer periphery 21d is inserted and fitted into the flange portion 24b. At this time, the locking portion 37 is elastically pushed and spread outward in the radial direction of the wheel accommodating portion 21c in a manner guided by the inclined surface 36a. When the locking portion 37 reaches the position (fixed position) of the engaging portion 36b, the locking portion 37 is fitted into the engaging portion 36b (so-called snap fit) with the elastic return and engaged with the wheel accommodating portion 21c. Stop. That is, in the assembled state, the engaging portion 37 is fitted into the engaging portion 36b, and thus the engaging portion 36b causes the engaging portion 36b to move to the wheel accommodating portion 21c in the opening direction of the wheel accommodating portion 21c (the axial direction of the worm wheel 23). Lock. Thereby, the cover 24 is fixed to the wheel accommodating part 21c (gear housing 21).

以上詳述したように、本実施形態によれば、前記第１の実施形態における（１）（２）（５）〜（７）の効果と同様の効果が得られるようになる。
なお、上記実施形態は以下のように変更してもよい。 As described above in detail, according to this embodiment, the same effects as the effects (1), (2), (5) to (7) in the first embodiment can be obtained.
In addition, you may change the said embodiment as follows.

・前記各実施の形態において、係止部（２７，３２ａ，３７）及び突部等（２６，３１、３６）を１組で表せば、減速部３に配設するその組数は任意である。
・前記各実施の形態において、カバー２４及びホイール収容部２１ｃの間に介装されるシール部材として、例えばＯリングなどを採用してもよい。 -In each said embodiment, if the latching | locking part (27, 32a, 37) and protrusion etc. (26, 31, 36) are represented by 1 set, the number of the groups arrange | positioned at the deceleration part 3 is arbitrary. .
In each of the above embodiments, for example, an O-ring may be employed as a seal member interposed between the cover 24 and the wheel housing portion 21c.

・前記各実施の形態において、減速機構を構成するギヤとしては、例えばピニオンと歯合するギヤなどであってもよい。
・前記各実施の形態において、カバー２４は樹脂製であってもよい。 In each of the above embodiments, the gear constituting the speed reduction mechanism may be a gear that meshes with a pinion, for example.
In each of the above embodiments, the cover 24 may be made of resin.

・ギヤードモータ１は、車両用パワーウインド装置以外の適宜の装置に適用してもよい。   The geared motor 1 may be applied to an appropriate device other than the vehicle power window device.

第１の実施の形態におけるモータの平面図。The top view of the motor in 1st Embodiment. 同実施の形態を示す分解斜視図。The disassembled perspective view which shows the embodiment. ギヤハウジングに対するカバーの取り付け態様を模式的に示す平面図。The top view which shows typically the attachment aspect of the cover with respect to a gear housing. 第２の実施の形態を示す分解斜視図。The disassembled perspective view which shows 2nd Embodiment. ギヤハウジングに対するカバーの取り付け態様を模式的に示す正面図。The front view which shows typically the attachment aspect of the cover with respect to a gear housing. 第３の実施の形態を示す分解斜視図。The disassembled perspective view which shows 3rd Embodiment. ギヤハウジングに対するカバーの取り付け態様を模式的に示す縦断面図。The longitudinal cross-sectional view which shows typically the attachment aspect of the cover with respect to a gear housing. 従来形態を示す分解斜視図。The disassembled perspective view which shows a conventional form.

符号の説明Explanation of symbols

Ａ…開口、２…モータ部、８…回転軸、２１…ギヤハウジング、２１ｃ…ギヤ収容部としてのホイール収容部、２１ｄ…外周、２３…ギヤとしてのウォームホイール、２４…閉塞部材としてのカバー、２４ａ…カバー部、２４ｂ…フランジ部、２６ａ，３１ａ，３６ａ…ガイド面としての傾斜面、２６ｂ，３１ｂ…係合凹部、２７，３２ａ，３７…係止部、３６ｂ…係合部。   A: Opening, 2 ... Motor part, 8 ... Rotating shaft, 21 ... Gear housing, 21c ... Wheel housing part as gear housing part, 21d ... Outer periphery, 23 ... Worm wheel as gear, 24 ... Cover as closing member, 24a ... cover part, 24b ... flange part, 26a, 31a, 36a ... inclined surface as a guide surface, 26b, 31b ... engaging recess, 27, 32a, 37 ... locking part, 36b ... engaging part.

Claims (7)

回転軸を有するモータ部と、該回転軸の回転を減速するギヤが収容される略円筒形状のギヤ収容部を有して前記モータ部に連結されるギヤハウジングと、前記ギヤハウジングに取り付けられ前記ギヤ収容部の開口を閉塞する閉塞部材とを備えるモータにおいて、
前記閉塞部材は、該閉塞部材を前記ギヤハウジングに組み付ける際に該ギヤハウジングと係合して前記ギヤ収容部の径方向又は前記ギヤの軸方向に弾性的に押し広げられると共に組み付け状態で弾性復帰に伴い前記ギヤハウジングに係止する係止部を備えたことを特徴とするモータ。 A motor portion having a rotation shaft; a gear housing having a substantially cylindrical gear housing portion that accommodates a gear that decelerates rotation of the rotation shaft; and a gear housing coupled to the motor portion; In a motor provided with a closing member that closes the opening of the gear housing portion,
When the closing member is assembled to the gear housing, the closing member is elastically expanded in the radial direction of the gear receiving portion or the axial direction of the gear while being engaged with the gear housing and elastically restored in the assembled state. Accordingly, a motor comprising a locking portion for locking to the gear housing. 請求項１に記載のモータにおいて、
前記閉塞部材は、前記開口を覆うカバー部と、該カバー部の周囲に立設され前記ギヤ収容部の外周に嵌合するフランジ部とを有し、
前記係止部は、前記フランジ部に設けられていることを特徴とするモータ。 The motor according to claim 1,
The closing member has a cover portion that covers the opening, and a flange portion that is erected around the cover portion and fits to the outer periphery of the gear housing portion,
The motor, wherein the locking portion is provided on the flange portion. 請求項１又は２に記載のモータにおいて、
前記閉塞部材は、該閉塞部材を前記ギヤハウジングに組み付ける際に前記ギヤ収容部の周方向に回転しつつ前記係止部を前記ギヤ収容部の径方向又は前記ギヤの軸方向に弾性的に押し広げ、組み付け状態で前記係止部の弾性復帰に伴い該係止部を前記周方向及び前記軸方向で前記ギヤハウジングに係止することを特徴とするモータ。 The motor according to claim 1 or 2,
The closing member elastically pushes the locking portion in the radial direction of the gear receiving portion or the axial direction of the gear while rotating in the circumferential direction of the gear receiving portion when the closing member is assembled to the gear housing. A motor characterized in that the engaging part is engaged with the gear housing in the circumferential direction and the axial direction in accordance with the elastic return of the engaging part in the expanded and assembled state. 請求項１〜３のいずれか一項に記載のモータにおいて、
前記閉塞部材及び該閉塞部材に対向する前記ギヤ収容部の周囲の間にシール部材を介装したことを特徴とするモータ。 The motor according to any one of claims 1 to 3,
A motor comprising a sealing member interposed between the closing member and the periphery of the gear housing portion facing the closing member. 請求項１〜４のいずれか一項に記載のモータにおいて、
前記ギヤハウジングには係合凹部が形成されており、
前記係止部は、組み付け状態で前記係合凹部に嵌入して前記ギヤハウジングに係止することを特徴とするモータ。 In the motor according to any one of claims 1 to 4,
An engagement recess is formed in the gear housing,
The motor according to claim 1, wherein the locking portion is fitted into the engagement recess in an assembled state and locked to the gear housing. 請求項１〜５のいずれか一項に記載のモータにおいて、
前記ギヤハウジングにはガイド面が形成されており、
前記係止部は、前記閉塞部材を前記ギヤハウジングに組み付ける際に前記ガイド面に圧接して前記ギヤ収容部の径方向又は前記ギヤの軸方向に弾性的に押し広げられることを特徴とするモータ。 In the motor according to any one of claims 1 to 5,
A guide surface is formed on the gear housing,
The motor is characterized in that the locking portion is elastically pushed and expanded in the radial direction of the gear housing portion or the axial direction of the gear while being pressed against the guide surface when the closing member is assembled to the gear housing. . 回転軸を有するモータ部と、該回転軸の回転を減速するギヤが収容される略円筒形状のギヤ収容部を有して前記モータ部に連結されるギヤハウジングと、前記ギヤハウジングに取り付けられ前記ギヤ収容部の開口を閉塞する閉塞部材とを備えるモータの製造方法において、
前記閉塞部材は、係止部を備え、
前記閉塞部材を前記ギヤハウジングに組み付ける際に前記ギヤ収容部の周方向に回転させつつ前記係止部を前記ギヤハウジングと係合させて該係止部を前記ギヤ収容部の径方向又は前記ギヤの軸方向に弾性的に押し広げ、
前記閉塞部材の前記ギヤハウジングに対する固定位置で前記係止部を弾性復帰させて該係止部を前記周方向及び前記軸方向で前記ギヤハウジングに係止し、前記閉塞部材を前記ギヤハウジングに固定することを特徴とするモータの製造方法。 A motor portion having a rotation shaft; a gear housing having a substantially cylindrical gear housing portion that accommodates a gear that decelerates rotation of the rotation shaft; and a gear housing coupled to the motor portion; In a manufacturing method of a motor comprising a closing member that closes an opening of a gear housing portion,
The closing member includes a locking portion,
When the closure member is assembled to the gear housing, the locking portion is engaged with the gear housing while rotating in the circumferential direction of the gear housing portion, and the locking portion is engaged in the radial direction of the gear housing portion or the gear. Elastically spread in the axial direction of
The locking portion is elastically restored at a position where the closing member is fixed to the gear housing, the locking portion is locked to the gear housing in the circumferential direction and the axial direction, and the closing member is fixed to the gear housing. A method for manufacturing a motor.

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