JP2005333748A - Waterproof structure of motor - Google Patents

Waterproof structure of motor Download PDF

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Publication number
JP2005333748A
JP2005333748A JP2004150886A JP2004150886A JP2005333748A JP 2005333748 A JP2005333748 A JP 2005333748A JP 2004150886 A JP2004150886 A JP 2004150886A JP 2004150886 A JP2004150886 A JP 2004150886A JP 2005333748 A JP2005333748 A JP 2005333748A
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motor
connector
packing
waterproof
external connection
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JP2004150886A
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JP4473644B2 (en
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Takakazu Takahashi
孝和 高橋
Keiji Jinno
圭史 神野
Keiichi Hosoi
啓一 細井
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Mitsuba Corp
Yazaki Corp
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Mitsuba Corp
Yazaki Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To secure the sealing performance of a connector engaging part even if there are dimensional errors in a plurality of components that are assembled to one another, in the waterproof structure of a motor used in a water-logged environment. <P>SOLUTION: A motor yoke 2 and an end housing 3 are assembled so as to form the connector engaging part 5, and a motor-side connector 6 that can be engaged with an external connection connector 7 is installed to the connector engaging part 5. A waterproof packing 10 having a rip 13 that abuts on seam joints 14, 15 between and among the motor yoke 2 or the end housing 3 and the motor-side connector 6 is attached to a packing attachment part 9 of the external connection connector 7. By this, the rip 13 of the waterproof packing 10 abuts on the seam joints 14, 15 between and among the plurality of components (the motor yoke 2, the end housing 3 and the motor-side connector 6) that are assembled to one another by the connector engaging part 5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、例えば自動車のラジエータを冷却するためのファンモータのように、被水環境で使用されるモータに適用するに好適な、モータの防水構造に関するものである。   The present invention relates to a waterproof structure for a motor suitable for application to a motor used in a wet environment, such as a fan motor for cooling a radiator of an automobile.

従来、この種のモータとしては、モータヨークとエンドハウジングとがコネクタ嵌合部を形成する形で組み付けられ、このコネクタ嵌合部に、外部接続用コネクタと嵌合しうるモータ側コネクタが装着されているものがある（例えば、特許文献１参照）。このモータでは、雨水などの水分が内部に入り込まないように、コネクタ嵌合部と外部接続用コネクタとの隙間にグロメットを介在させることにより、コネクタ嵌合部のシール性を高めている。
特開２００３−９４５９号公報 Conventionally, as this type of motor, a motor yoke and an end housing are assembled so as to form a connector fitting portion, and a motor side connector that can be fitted to an external connection connector is mounted on this connector fitting portion. (For example, refer to Patent Document 1). In this motor, the sealing property of the connector fitting portion is enhanced by interposing a grommet in the gap between the connector fitting portion and the external connection connector so that moisture such as rainwater does not enter the inside.
JP 2003-9459 A

しかし、これでは次のような不都合があった。   However, this has the following disadvantages.

すなわち、モータのコネクタ嵌合部では複数個の部品（モータヨーク、エンドハウジング、ブラシホルダなど）が重なり合って組み付けられているため、これらの部品に寸法誤差がある場合は、部品間に継ぎ目が生じ、この継ぎ目から水分が浸入する恐れがある。したがって、コネクタ嵌合部のシール性を必ずしも確保することができない。   In other words, since a plurality of parts (motor yoke, end housing, brush holder, etc.) are assembled in an overlapping manner at the connector fitting portion of the motor, if there is a dimensional error in these parts, a seam is generated between the parts. There is a risk of moisture intruding from this seam. Therefore, it is not always possible to ensure the sealing performance of the connector fitting portion.

本発明は、このような事情に鑑み、互いに組み付けられる複数個の部品に寸法誤差があってもコネクタ嵌合部のシール性を確保することが可能な、モータの防水構造を提供することを目的とする。   In view of such circumstances, an object of the present invention is to provide a waterproof structure for a motor capable of ensuring the sealing performance of a connector fitting portion even if there are dimensional errors in a plurality of components assembled to each other. And

まず、請求項１に係る発明は、モータヨークとエンドハウジングとがコネクタ嵌合部を形成する形で組み付けられ、このコネクタ嵌合部に、外部接続用コネクタと嵌合しうるモータ側コネクタが装着されているモータの防水構造であって、前記外部接続用コネクタは、端子収納部およびパッキン装着部を有し、前記外部接続用コネクタの端子収納部には、接続端子が収納され、前記外部接続用コネクタのパッキン装着部には、前記モータヨークまたは前記エンドハウジングと前記モータ側コネクタとの継ぎ目に当接するリップ部を備えた防水パッキンが装着されていることを特徴とする。
また、請求項２に係る発明は、前記防水パッキンのリップ部は、当該防水パッキンの押し当て面のコネクタ嵌合方向先端部に形成されていることを特徴とする。
また、請求項３に係る発明は、前記防水パッキンのリップ部は、弾性を具備していることを特徴とする。
また、請求項４に係る発明は、前記防水パッキンは、前記外部接続用コネクタのパッキン装着部の内周面と前記モータ側コネクタの外周面との間に介在していることを特徴とする。
また、請求項５に係る発明は、前記外部接続用コネクタのパッキン装着部は、前記端子収納部のコネクタ嵌合方向後方に位置していることを特徴とする。
また、請求項６に係る発明は、前記防水パッキンのリップ部は、当該防水パッキンのコネクタ嵌合方向先端部に位置していることを特徴とする。 In the first aspect of the invention, the motor yoke and the end housing are assembled so as to form a connector fitting portion, and a motor-side connector that can be fitted to an external connection connector is attached to the connector fitting portion. The external connection connector has a terminal storage portion and a packing mounting portion, and a connection terminal is stored in the terminal storage portion of the external connection connector. A waterproof packing having a lip portion that contacts a joint between the motor yoke or the end housing and the motor side connector is mounted on the packing mounting portion of the connector for use.
The invention according to claim 2 is characterized in that the lip portion of the waterproof packing is formed at the front end portion of the pressing surface of the waterproof packing in the connector fitting direction.
The invention according to claim 3 is characterized in that the lip portion of the waterproof packing has elasticity.
Further, the invention according to claim 4 is characterized in that the waterproof packing is interposed between an inner peripheral surface of the packing mounting portion of the external connection connector and an outer peripheral surface of the motor side connector.
The invention according to claim 5 is characterized in that the packing mounting portion of the external connection connector is located behind the terminal accommodating portion in the connector fitting direction.
Moreover, the invention which concerns on Claim 6 is located in the connector fitting direction front-end | tip part of the said waterproof packing, and the lip | rip part of the said waterproof packing is characterized by the above-mentioned.

本発明によれば、コネクタ嵌合部で互いに組み付けられる複数個の部品（つまり、モータヨーク、エンドハウジング、モータ側コネクタ）間の継ぎ目には、防水パッキンのリップ部が当接するため、これらの部品に寸法誤差があっても、コネクタ嵌合部のシール性を確保することができる。   According to the present invention, the lip portion of the waterproof packing is in contact with the joint between a plurality of components (that is, the motor yoke, the end housing, and the motor side connector) assembled to each other at the connector fitting portion. Even if there is a dimensional error, the sealing property of the connector fitting portion can be ensured.

さらに、防水パッキンのリップ部が弾性を具備していると、コネクタ嵌合部で互いに組み付けられる各部品（つまり、モータヨーク、エンドハウジング、モータ側コネクタ）の形状に合わせてリップ部が潰れる形で弾性変形するため、コネクタ嵌合部のシール性を一層高めることができる。   Furthermore, when the lip portion of the waterproof packing has elasticity, the lip portion is crushed in accordance with the shape of each component (that is, the motor yoke, the end housing, and the motor side connector) assembled to each other at the connector fitting portion. Since it is elastically deformed, the sealing performance of the connector fitting portion can be further enhanced.

また、防水パッキンが外部接続用コネクタのパッキン装着部の内周面とモータ側コネクタの外周面との間に介在していると、外部接続用コネクタとモータ側コネクタとの隙間から雨水などの水分が入り込む事態を防ぐことができる。   In addition, if the waterproof packing is interposed between the inner peripheral surface of the packing mounting portion of the external connection connector and the outer peripheral surface of the motor side connector, moisture such as rainwater can be removed from the gap between the external connection connector and the motor side connector. Can be prevented from entering.

以下、本発明の実施形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

モータ１は、図１および図２に示すように、有底円筒状に形成された金属製のモータヨーク２を有しており、モータヨーク２の開口部には、円盤状に形成された金属製のエンドハウジング３が嵌合する形で組み付けられている。ここで、モータヨーク２とエンドハウジング３との接合部は円周状となっているが、その一部には湾曲矩形状のコネクタ嵌合部５が形成されているとともに、残部ではモータヨーク２とエンドハウジング３とが隙間なく密着した状態となっている。そして、コネクタ嵌合部５にはモータ側コネクタ６が装着されており、モータ側コネクタ６内には雄形の接続端子（図示せず）が収納されている。その結果、コネクタ嵌合部５においては、エンドハウジング３、モータ側コネクタ６およびモータヨーク２が下から順に重なり合って組み付けられた状態となっている。   As shown in FIGS. 1 and 2, the motor 1 has a metal motor yoke 2 formed in a bottomed cylindrical shape, and a metal formed in a disk shape in the opening of the motor yoke 2. The assembled end housing 3 is assembled so as to be fitted. Here, the joint portion between the motor yoke 2 and the end housing 3 has a circumferential shape, and a curved rectangular connector fitting portion 5 is formed in a part thereof, and the motor yoke 2 is formed in the remaining portion. And the end housing 3 are in close contact with each other without a gap. A motor-side connector 6 is attached to the connector fitting portion 5, and a male connection terminal (not shown) is accommodated in the motor-side connector 6. As a result, in the connector fitting portion 5, the end housing 3, the motor-side connector 6, and the motor yoke 2 are assembled in an overlapping manner from the bottom.

他方、このモータ側コネクタ６と嵌合する外部接続用コネクタ７は、図３に示すように、硬質樹脂製の端子収納部８を有しており、端子収納部８内には雌形の接続端子（図示せず）が収納されている。また、端子収納部８のコネクタ嵌合方向後方（矢印Ｂ方向）には、コネクタ嵌合部５の形状に合致する湾曲枠形状に形成された硬質樹脂製のパッキン装着部９が一体に周設されており、パッキン装着部９には、コネクタ嵌合部５の形状に合致する湾曲枠形状に形成された合成ゴム製の防水パッキン１０が装着されている。この防水パッキン１０は枠体１１を有しており、枠体１１のコネクタ嵌合方向前部（矢印Ａ方向）には、その全周にわたって押し当て面１２が形成されている。押し当て面１２のコネクタ嵌合方向先端部（矢印Ａ方向）には、その全周にわたって半円断面状のリップ部１３が形成されている。   On the other hand, the external connection connector 7 fitted to the motor side connector 6 has a terminal housing portion 8 made of hard resin, as shown in FIG. A terminal (not shown) is accommodated. Further, a packing mounting portion 9 made of a hard resin formed in a curved frame shape that matches the shape of the connector fitting portion 5 is integrally provided around the connector fitting portion 5 in the connector fitting direction (arrow B direction). In addition, a synthetic rubber waterproof packing 10 formed in a curved frame shape that matches the shape of the connector fitting portion 5 is mounted on the packing mounting portion 9. This waterproof packing 10 has a frame 11, and a pressing surface 12 is formed over the entire circumference of the frame 11 at the front part in the connector fitting direction (arrow A direction). A lip portion 13 having a semicircular cross section is formed over the entire periphery of the pressing surface 12 at the distal end portion (arrow A direction) in the connector fitting direction.

したがって、図４に示すように、モータ１のモータ側コネクタ６に外部接続用コネクタ７を嵌合させると、防水パッキン１０は、外部接続用コネクタ７のパッキン装着部９の内周面とモータ側コネクタ６の外周面との間に介在するので、外部接続用コネクタ７とモータ側コネクタ６との隙間から雨水などの水分が入り込む事態を防ぐことができる。   Therefore, as shown in FIG. 4, when the external connection connector 7 is fitted to the motor side connector 6 of the motor 1, the waterproof packing 10 is connected to the inner peripheral surface of the packing mounting portion 9 of the external connection connector 7 and the motor side. Since it is interposed between the outer peripheral surface of the connector 6, it is possible to prevent a situation in which moisture such as rainwater enters from the gap between the external connection connector 7 and the motor side connector 6.

また、防水パッキン１０のリップ部１３は、図４に示すように、エンドハウジング３とモータ側コネクタ６との継ぎ目１４に当接する。そのため、これらエンドハウジング３、モータ側コネクタ６に寸法誤差があったとしても、コネクタ嵌合部５のシール性を確保することができる。しかも、このリップ部１３は、合成ゴム製であって弾性を具備しており、エンドハウジング３、モータ側コネクタ６の形状に合わせて潰れる形で弾性変形するので、コネクタ嵌合部５のシール性を一層高めることが可能となる。   Further, the lip portion 13 of the waterproof packing 10 abuts on a joint 14 between the end housing 3 and the motor side connector 6 as shown in FIG. Therefore, even if there is a dimensional error in the end housing 3 and the motor-side connector 6, the sealing property of the connector fitting portion 5 can be ensured. In addition, the lip portion 13 is made of synthetic rubber and has elasticity, and is elastically deformed so as to be crushed according to the shapes of the end housing 3 and the motor side connector 6. Can be further increased.

さらに、防水パッキン１０のリップ部１３は、図４に示すように、モータヨーク２とモータ側コネクタ６との継ぎ目１５に当接する。そのため、これらモータヨーク２、モータ側コネクタ６に寸法誤差があったとしても、コネクタ嵌合部５のシール性を確保することができる。しかも、このリップ部１３は、合成ゴム製であって弾性を具備しており、モータヨーク２、モータ側コネクタ６の形状に合わせて潰れる形で弾性変形するので、コネクタ嵌合部５のシール性を一層高めることが可能となる。   Further, as shown in FIG. 4, the lip portion 13 of the waterproof packing 10 contacts the joint 15 between the motor yoke 2 and the motor side connector 6. Therefore, even if there is a dimensional error in the motor yoke 2 and the motor-side connector 6, the sealing property of the connector fitting portion 5 can be ensured. In addition, the lip portion 13 is made of synthetic rubber and has elasticity. The lip portion 13 is elastically deformed so as to be crushed according to the shapes of the motor yoke 2 and the motor-side connector 6. Can be further increased.

なお、上述の実施形態においては、図１に示すように、有底円筒状に形成された金属製のモータヨーク２に、円盤状に形成された金属製のエンドハウジング３を組み付けた場合について説明したが、モータヨーク２、エンドハウジング３の形状や材質については、これらに限定されるわけではない。   In the above-described embodiment, as shown in FIG. 1, a case where a metal end housing 3 formed in a disk shape is assembled to a metal motor yoke 2 formed in a bottomed cylindrical shape will be described. However, the shapes and materials of the motor yoke 2 and the end housing 3 are not limited to these.

また、上述の実施形態においては、防水パッキン１０が合成ゴム製である場合について説明したが、合成ゴム以外の材質（例えば、ウレタン樹脂、シリコーン樹脂など）を代用することも可能である。   In the above-described embodiment, the case where the waterproof packing 10 is made of synthetic rubber has been described. However, materials other than synthetic rubber (for example, urethane resin, silicone resin, etc.) can be substituted.

本発明に係るモータの防水構造の一実施形態を示す斜視図である。It is a perspective view showing one embodiment of the waterproof structure of the motor concerning the present invention. 図１に示すモータのコネクタ嵌合部の分解斜視図である。It is a disassembled perspective view of the connector fitting part of the motor shown in FIG. 外部接続用コネクタの一例を示す斜視図である。It is a perspective view which shows an example of the connector for external connection. モータ側コネクタと外部接続用コネクタとの嵌合状態を示す断面図である。It is sectional drawing which shows the fitting state of the motor side connector and the connector for external connection.

符号の説明Explanation of symbols

１……モータ
２……モータヨーク
３……エンドハウジング
５……コネクタ嵌合部
６……モータ側コネクタ
７……外部接続用コネクタ
８……端子収納部
９……パッキン装着部
１０……防水パッキン
１１……枠体
１２……押し当て面
１３……リップ部
１４、１５……継ぎ目 DESCRIPTION OF SYMBOLS 1 …… Motor 2 …… Motor yoke 3 …… End housing 5 …… Connector fitting part 6 …… Motor side connector 7 …… Connector for external connection 8 …… Terminal housing part 9 …… Packing mounting part 10 …… Waterproof Packing 11 ... Frame 12 ... Pressing surface 13 ... Lip part 14, 15 ... Seam

Claims (6)

モータヨークとエンドハウジングとがコネクタ嵌合部を形成する形で組み付けられ、このコネクタ嵌合部に、外部接続用コネクタと嵌合しうるモータ側コネクタが装着されているモータの防水構造であって、
前記外部接続用コネクタは、端子収納部およびパッキン装着部を有し、
前記外部接続用コネクタの端子収納部には、接続端子が収納され、
前記外部接続用コネクタのパッキン装着部には、前記モータヨークまたは前記エンドハウジングと前記モータ側コネクタとの継ぎ目に当接するリップ部を備えた防水パッキンが装着されていることを特徴とする、モータの防水構造。 A motor waterproof structure in which a motor yoke and an end housing are assembled so as to form a connector fitting portion, and a motor side connector that can be fitted to an external connection connector is attached to the connector fitting portion. ,
The external connection connector has a terminal storage portion and a packing mounting portion,
In the terminal storage portion of the external connection connector, a connection terminal is stored,
A waterproof packing having a lip portion that contacts a joint between the motor yoke or the end housing and the motor side connector is mounted on the packing mounting portion of the external connection connector. Waterproof structure. 前記防水パッキンのリップ部は、当該防水パッキンの押し当て面のコネクタ嵌合方向先端部に形成されていることを特徴とする、請求項１に記載のモータの防水構造。   The waterproof structure for a motor according to claim 1, wherein the lip portion of the waterproof packing is formed at a front end portion of the pressing surface of the waterproof packing in a connector fitting direction. 前記防水パッキンのリップ部は、弾性を具備していることを特徴とする、請求項１又は２に記載のモータの防水構造。   The waterproof structure for a motor according to claim 1, wherein the lip portion of the waterproof packing has elasticity. 前記防水パッキンは、前記外部接続用コネクタのパッキン装着部の内周面と前記モータ側コネクタの外周面との間に介在していることを特徴とする、請求項１乃至３のいずれかに記載のモータの防水構造。   4. The waterproof packing according to claim 1, wherein the waterproof packing is interposed between an inner peripheral surface of a packing mounting portion of the external connection connector and an outer peripheral surface of the motor side connector. Motor waterproof structure. 前記外部接続用コネクタのパッキン装着部は、前記端子収納部のコネクタ嵌合方向後方に位置していることを特徴とする、請求項１乃至４のいずれかに記載のモータの防水構造。   The waterproof structure for a motor according to any one of claims 1 to 4, wherein the packing mounting portion of the external connection connector is located behind the terminal housing portion in the connector fitting direction. 前記防水パッキンのリップ部は、当該防水パッキンのコネクタ嵌合方向先端部に位置していることを特徴とする、請求項１乃至５のいずれかに記載のモータの防水構造。   The waterproof structure for a motor according to any one of claims 1 to 5, wherein the lip portion of the waterproof packing is located at a front end portion of the waterproof packing in a connector fitting direction.
JP2004150886A 2004-05-20 2004-05-20 Motor waterproof structure Expired - Fee Related JP4473644B2 (en)

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