JP2015185282A - Waterproof structure of connector - Google Patents

Waterproof structure of connector Download PDF

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Publication number
JP2015185282A
JP2015185282A JP2014059086A JP2014059086A JP2015185282A JP 2015185282 A JP2015185282 A JP 2015185282A JP 2014059086 A JP2014059086 A JP 2014059086A JP 2014059086 A JP2014059086 A JP 2014059086A JP 2015185282 A JP2015185282 A JP 2015185282A
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Prior art keywords
seal member
male
housing
terminal
cylinder
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JP6298673B2 (en
Inventor
啓二 ▲濱▼田
啓二 ▲濱▼田
Keiji Hamada
宮川　知之
Tomoyuki Miyagawa
知之 宮川
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Yazaki Corp
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Yazaki Corp
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Priority to CN201510123003.9A priority patent/CN104934762A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5219—Sealing means between coupling parts, e.g. interfacial seal
    • H01R13/5221—Sealing means between coupling parts, e.g. interfacial seal having cable sealing means

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  • Connector Housings Or Holding Contact Members (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof structure of a connector capable of suppressing deterioration of waterproof performance, while down-sizing.SOLUTION: One of a pair of housings 2, 3 has a first cylinder 26 extending in the fitting direction, the other has an insertion part 36 to be inserted into the first cylinder, and a second cylinder 37 surrounding the outer periphery of the insertion part. A seal member 4 is attached to the inner bottom surface 27 of the first cylinder formed oppositely to the tip of the insertion part being inserted into the cylinder, and at the tip of the insertion part, a seal member abutting surface 39 for holding the seal member between the inner bottom surface, at an intended fitting position of the pair of housings is formed on the front side of the apical surface 371 of the second cylinder in the insertion direction.

Description

本発明は、一対のハウジングを嵌合して互いの端子同士を接続するコネクタの防水構造に関する。   The present invention relates to a waterproof structure for a connector that fits a pair of housings and connects the terminals to each other.

従来から、自動車や自動二輪車等の車両に搭載される電気機器間を接続するためには、各種の防水構造を備えたコネクタが用いられている。このようなコネクタの防水構造の一例が特許文献１に開示されている。   2. Description of the Related Art Conventionally, connectors having various waterproof structures have been used to connect electrical devices mounted on vehicles such as automobiles and motorcycles. An example of the waterproof structure of such a connector is disclosed in Patent Document 1.

特許文献１のコネクタでは、オス端子を保持するオスハウジングとメス端子を保持するメスハウジングとを嵌合して互いの端子を接続するようになっている。オスハウジングには筒状のフード部が設けられ、メスハウジングにはメス端子を収容してフード部に内嵌されるインナハウジングと、その外周を包囲するアウタハウジングが設けられている。オスハウジングのフード部は、インナハウジングとアウタハウジングの間に挿入されるようになっている。そして、環状のシール部材（パッキン）がインナハウジングの外周部に装着され、該パッキンがインナハウジングとアウタハウジングの間に挿入されたフード部の内周面と密着することで、端子同士の接続部分の防水が図られている。   In the connector of Patent Document 1, a male housing that holds a male terminal and a female housing that holds a female terminal are fitted together to connect the terminals to each other. The male housing is provided with a cylindrical hood portion, and the female housing is provided with an inner housing that receives a female terminal and is fitted in the hood portion, and an outer housing that surrounds the outer periphery thereof. The hood portion of the male housing is inserted between the inner housing and the outer housing. An annular seal member (packing) is attached to the outer peripheral portion of the inner housing, and the packing is in close contact with the inner peripheral surface of the hood portion inserted between the inner housing and the outer housing, thereby connecting the terminals to each other. It is designed to be waterproof.

しかしながら、この場合にはパッキンがインナハウジングの外周部に装着されるため、装着されたパッキンの肉厚分だけインナハウジングが拡径された状態となり、それに応じてアウタハウジングとの間隔（フード部の挿入空間となる間口）を拡張させなければならず、オスハウジング及びメスハウジングのサイズ（径寸法）が大きくなってしまう。   However, in this case, since the packing is mounted on the outer peripheral portion of the inner housing, the inner housing is expanded in diameter by the thickness of the mounted packing, and accordingly, the distance from the outer housing (of the hood portion) It is necessary to expand the front opening), and the size (diameter dimension) of the male housing and the female housing becomes large.

そこで、例えば特許文献２に開示されたコネクタのように、メスハウジングの端子収容室の内底面にパッキンを組み付け、メスハウジングの端子収容室に挿入されて内底面との間でパッキンを挟持する挿入部を設けた構成とすれば、内底面と挿入部（先端のパッキン突き当て面）との間で端子同士の接続部分への浸水を防止することができるから、コネクタの径方向のサイズアップを抑制することが可能となる。   Therefore, for example, like the connector disclosed in Patent Document 2, the packing is assembled to the inner bottom surface of the terminal housing chamber of the female housing, and is inserted into the terminal housing chamber of the female housing to sandwich the packing with the inner bottom surface. If the structure is provided with a part, it is possible to prevent water from entering the connection part between the terminals between the inner bottom surface and the insertion part (packing abutting surface at the tip), so the size of the connector in the radial direction can be increased. It becomes possible to suppress.

特開２００９−４１１０号公報JP 2009-4110 A 実開昭５５−９７９８８号公報Japanese Utility Model Publication No. 55-97988

しかしながら、特許文献２に開示された構成では、メスハウジングへの挿入前の状態においてはオスハウジングの挿入部が完全に剥き出しとなっており、何ら保護されていない。このため、例えばオスハウジングの落下時などに挿入部の先端（パッキン突き当て面）が破損してパッキンを内底面との間で適正に挟持できなくなり、防水性能の低下を招くおそれがある。   However, in the configuration disclosed in Patent Document 2, the insertion portion of the male housing is completely exposed before being inserted into the female housing, and is not protected at all. For this reason, for example, when the male housing is dropped, the distal end (packing abutting surface) of the insertion portion is damaged, and the packing cannot be properly sandwiched between the inner bottom surface and the waterproof performance may be deteriorated.

本発明はこれを踏まえてなされたものであり、その解決しようとする課題は、小型化を図りながら、防水性能の低下を抑制可能なコネクタの防水構造を提供することにある。   The present invention has been made in view of this, and a problem to be solved is to provide a waterproof structure of a connector capable of suppressing a decrease in waterproof performance while achieving downsizing.

上記課題を解決するため、本発明は、嵌合可能に形成されて所期の嵌合位置で互いに係止する係止機構を有する一対のハウジングと、前記一対のハウジングにそれぞれ形成された端子収容室と、前記端子収容室に保持された端子と、前記端子収容室を防水する弾性変形可能なシール部材とを備え、前記一対のハウジングを嵌合して互いの端子を接続するコネクタの防水構造であって、前記一対のハウジングの一方は、嵌合方向に延在する第１筒体部を有し、他方は、前記第１筒体部の筒体内に挿入される挿入部と、前記挿入部の外周を包囲する第２筒体部とを有しており、前記第１筒体部には、筒体内に挿入される前記挿入部の先端と対向して形成された内底面に前記シール部材が組み付けられ、前記挿入部の先端には、前記所期の嵌合位置で前記シール部材を前記内底面との間で挟持するシール部材突き当て面が前記第２筒体部の先端面よりも挿入方向の手前側に形成されることを特徴とする。   In order to solve the above-described problems, the present invention provides a pair of housings that are formed so as to be able to be fitted and that are locked to each other at an intended fitting position, and terminal housings that are respectively formed in the pair of housings. A waterproof structure for a connector, which includes a chamber, a terminal held in the terminal accommodating chamber, and an elastically deformable seal member that waterproofs the terminal accommodating chamber, and that connects the terminals by fitting the pair of housings One of the pair of housings has a first cylindrical part extending in a fitting direction, and the other is an insertion part inserted into a cylindrical body of the first cylindrical part, and the insertion A second cylindrical part surrounding the outer periphery of the first part, and the first cylindrical part is provided with an inner bottom face formed opposite to the distal end of the insertion part inserted into the cylindrical body. A member is assembled, and at the distal end of the insertion portion, the expected fitting position Characterized in that it is formed of the seal member on the front side of the clamping sealing member abutting surface is the second cylindrical portion the insertion direction than the distal end face of between the inner bottom surface.

これによれば、例えば一対のハウジングを嵌合させる前に、シール部材突き当て面が形成されたハウジングが床などに落下したような場合であっても、落下時の衝撃をシール部材突き当て面ではなく第２筒体部の先端面で受けることができる。このように第２筒体部でシール部材突き当て面を保護することができるから、シール部材突き当て面の破損等を防ぎ、シール部材突き当て面を適正にシール部材と密着させることが可能となる。   According to this, even when the housing on which the seal member abutment surface is formed falls on the floor or the like before the pair of housings are fitted, the impact at the time of dropping is applied to the seal member abutment surface. Instead, it can be received at the front end surface of the second cylindrical portion. Since the seal member abutting surface can be protected by the second cylindrical portion in this way, the seal member abutting surface can be prevented from being damaged, and the seal member abutting surface can be properly adhered to the seal member. Become.

前記シール部材は、前記第１筒体部の筒体内に臨む開口を有する環状に形成することができる。これにより、シール部材突き当て面と内底面との間で挟持されたときに、シール部材を肉厚方向（挟持方向）のみならず径方向にも弾性変形させやすく、弾性変形により潰れて広がったシール部材をシール部材突き当て面の周縁部に回り込ませることができるから、シール部材突き当て面とシール部材とを確実に密着させることが可能となる。   The seal member may be formed in an annular shape having an opening facing the cylinder of the first cylinder part. As a result, when sandwiched between the sealing member abutting surface and the inner bottom surface, the sealing member is easily elastically deformed not only in the thickness direction (clamping direction) but also in the radial direction, and is crushed and spread by elastic deformation. Since the seal member can be wound around the peripheral edge portion of the seal member abutting surface, the seal member abutting surface and the seal member can be reliably brought into close contact with each other.

本発明によれば、小型化を図りながら、防水性能の低下を抑制可能なコネクタの防水構造を実現することができる。   ADVANTAGE OF THE INVENTION According to this invention, the waterproof structure of the connector which can suppress the fall of waterproof performance is achieved, achieving size reduction.

本発明の一実施形態のコネクタ（オスハウジング及びメスハウジング）の構成を示す平面図である。It is a top view which shows the structure of the connector (male housing and female housing) of one Embodiment of this invention. 図１の矢印Ａ１部分におけるコネクタの縦断面を矢印方向から示す図である。It is a figure which shows the longitudinal cross-section of the connector in the arrow A1 part of FIG. 1 from an arrow direction. 本発明の一実施形態のオスハウジング、オス端子、シール部材の構成を示す斜視図である。It is a perspective view which shows the structure of the male housing of one Embodiment of this invention, a male terminal, and a sealing member. 本発明の一実施形態のメスハウジング、メス端子の構成を示す斜視図である。It is a perspective view which shows the structure of the female housing of one Embodiment of this invention, and a female terminal. オスハウジングがメスハウジングに挿入された状態（嵌合前の状態）を示す縦断面図である（図１の矢印Ａ１部分に相当）。It is a longitudinal cross-sectional view which shows the state (state before fitting) in which the male housing was inserted in the female housing (equivalent to the arrow A1 part of FIG. 1). オスハウジングとメスハウジングを嵌合させた後の状態を示す縦断面図である（図１の矢印Ａ１部分に相当）。It is a longitudinal cross-sectional view which shows the state after fitting a male housing and a female housing (equivalent to the arrow A1 part of FIG. 1).

以下、本発明のコネクタの防水構造について、添付図面を参照して説明する。図１及び図２には、本発明の一実施形態の防水構造を備えたコネクタ１の全体構成がそれぞれ示されている。また、図３にはコネクタ１の一方のハウジング２、図４には他方のハウジング３の全体構成がそれぞれ示されている。以下の説明においては、図１〜図４に示す矢印Ｘ方向を左右方向、矢印Ｙ方向を前後方向、矢印Ｚ方向を上下方向という。このうち前後方向については、矢印Ｙ１方向を前側（前方）、矢印Ｙ２方向を後側（後方）とする。   Hereinafter, the waterproof structure of the connector of the present invention will be described with reference to the accompanying drawings. 1 and 2 respectively show the overall configuration of a connector 1 having a waterproof structure according to an embodiment of the present invention. FIG. 3 shows the overall configuration of one housing 2 of the connector 1, and FIG. In the following description, the arrow X direction shown in FIGS. 1 to 4 is referred to as the left-right direction, the arrow Y direction is referred to as the front-rear direction, and the arrow Z direction is referred to as the up-down direction. Of these, in the front-rear direction, the arrow Y1 direction is the front side (front), and the arrow Y2 direction is the rear side (rear).

図１及び図２に示すように、コネクタ１は、嵌合可能な一対のハウジング２,３を嵌合により一体化させて構成される。本実施形態では、一方のハウジング２がオス側、他方のハウジング３がメス側として形成され、オス側のハウジング（以下、オスハウジングという）２をメス側のハウジング（以下、メスハウジングという）３に挿入してこれらのハウジング２,３を嵌合させる。これらのハウジング２,３は、樹脂等からなる前後方向に長手の成形体であって、所期の嵌合位置で互いに係止する係止機構をそれぞれ有している。この場合、オスハウジング２には係止突起２１が設けられ、メスハウジング３には係止突起２１を係止させる係止アーム３１が設けられている。また、嵌合時に互いの姿勢を安定させるべく、オスハウジング２には嵌合方向（前後方向）に沿って突条部２２が設けられ、メスハウジング３には突条部２２と噛み合う溝部３２が形成されている。   As shown in FIGS. 1 and 2, the connector 1 is configured by integrating a pair of housings 2 and 3 that can be fitted together by fitting. In this embodiment, one housing 2 is formed as a male side and the other housing 3 is formed as a female side, and the male side housing (hereinafter referred to as male housing) 2 is changed to a female side housing (hereinafter referred to as female housing) 3. The housings 2 and 3 are inserted and inserted. These housings 2 and 3 are molded bodies that are made of resin or the like and are long in the front-rear direction, and each have a locking mechanism that locks each other at an intended fitting position. In this case, the male housing 2 is provided with a locking projection 21, and the female housing 3 is provided with a locking arm 31 for locking the locking projection 21. In addition, the male housing 2 is provided with a ridge 22 along the fitting direction (front-rear direction), and the female housing 3 has a groove 32 that meshes with the ridge 22 in order to stabilize each other's posture during fitting. Is formed.

図２及び図３に示すように、オスハウジング２には、端子（一例としてオス端子）２３を保持する端子収容室２４が内部に形成されている。オス端子２３は、電線２０の端末に取り付けられており、本実施形態では２本の電線２０に１つずつ取り付けられて端子収容室２４の端子保持部２５に左右に２つ並んで保持されている。端子保持部２５には、筒状の各差込部２５１からオス端子２３が差し込まれる。差し込まれたオス端子２３は、先端側の端子部２３１が端子収容室２４（端子保持部２５）から突出されるとともに、基端側に装着された防水栓（ゴム等からなるリング部材）２３２により差込部２５１に密着された状態で端子保持部２５に保持される。防水栓２３２は、例えば電線２０を伝うような端子収容室２４内への浸水の防止を図っている。   As shown in FIGS. 2 and 3, the male housing 2 is formed with a terminal accommodating chamber 24 that holds a terminal (male terminal as an example) 23. The male terminals 23 are attached to the ends of the electric wires 20. In this embodiment, the male terminals 23 are attached to the two electric wires 20 one by one and are held side by side in the terminal holding portion 25 of the terminal accommodating chamber 24 side by side. Yes. The male terminal 23 is inserted into the terminal holding portion 25 from each cylindrical insertion portion 251. The inserted male terminal 23 has a distal end side terminal portion 231 protruding from the terminal accommodating chamber 24 (terminal holding portion 25) and a waterproof plug (ring member made of rubber or the like) 232 attached to the proximal end side. It is held by the terminal holding part 25 in a state of being in close contact with the insertion part 251. The waterproof plug 232 prevents, for example, water from entering the terminal accommodating chamber 24 that travels along the electric wire 20.

また、オスハウジング２は、嵌合方向（前後方向）に延在する第１筒体部（以下、オス側筒体部という）２６を有している。オス側筒体部２６は、端子保持部２５の差込部２５１とは反対側の周縁から筒状に伸長して２つのオス端子２３の端子部２３１を包囲するとともに、その筒体内に底面（以下、内底面という）２７を有するように形成されている。この場合、内底面２７は、端子収容室２４の前端面に相当し、オス端子２３の端子部２３１は、内底面２７から突出されている。また、内底面２７は、オス側筒体部２６の筒体内に挿入される後述するメスハウジング３の挿入部３６の先端と対向するように形成されている。   The male housing 2 has a first cylindrical part (hereinafter referred to as a male side cylindrical part) 26 extending in the fitting direction (front-rear direction). The male side cylinder part 26 extends in a cylindrical shape from the periphery of the terminal holding part 25 opposite to the insertion part 251 to surround the terminal parts 231 of the two male terminals 23, and has a bottom surface ( (Hereinafter referred to as an inner bottom surface) 27. In this case, the inner bottom surface 27 corresponds to the front end surface of the terminal accommodating chamber 24, and the terminal portion 231 of the male terminal 23 protrudes from the inner bottom surface 27. Further, the inner bottom surface 27 is formed so as to face the distal end of an insertion portion 36 of the female housing 3 to be described later that is inserted into the cylindrical body of the male side cylindrical body portion 26.

オス側筒体部２６の内底面２７には、シール部材４が組み付けられている。シール部材４は、ゴム等の弾性材で形成され、一対のハウジング２,３における端子２３,３３同士の接続部分への浸水を防止する弾性変形可能な部材であって、例えばパッキンやＯリング等がこれに相当する。本実施形態では一例として、オス側筒体部２６の筒体内に臨む開口４１を有する環状にシール部材４が形成され、該開口４１からオス端子２３の端子部２３１をオス側筒体部２６の筒体内に突出させるようになっている。   The seal member 4 is assembled to the inner bottom surface 27 of the male side cylinder portion 26. The seal member 4 is formed of an elastic material such as rubber, and is an elastically deformable member that prevents water from entering the connection portion between the terminals 23 and 33 in the pair of housings 2 and 3. Corresponds to this. In the present embodiment, as an example, the seal member 4 is formed in an annular shape having an opening 41 facing the cylinder of the male side cylindrical portion 26, and the terminal portion 231 of the male terminal 23 is connected to the male side cylindrical portion 26 from the opening 41. It is designed to protrude into the cylinder.

この場合、シール部材４は、前後方向の断面形状が四隅を湾曲させた略矩形環状をなし、その大きさをオス側筒体部２６の前後方向の断面形状（内底面２７の形状）よりも一回り大きくして形成されている。したがって、シール部材４は、外周部をオス側筒体部２６の内周面２６１と密着させた状態で内底面２７に組み付けられる。内底面２７に組み付ける場合には、例えば所定の冶具等を用いてオス側筒体部２６の筒体内にシール部材４を嵌入し、内底面２７まで押し込む。また、シール部材４は、後述する挿入部３６のシール部材突き当て面３９の内周部よりも開口４１を一回り大きくして形成されている。   In this case, the seal member 4 has a substantially rectangular ring shape with the cross-sectional shape in the front-rear direction curved at the four corners, and the size thereof is larger than the cross-sectional shape in the front-rear direction of the male side cylinder part 26 (the shape of the inner bottom surface 27). It is made one size larger. Therefore, the seal member 4 is assembled to the inner bottom surface 27 in a state where the outer peripheral portion is in close contact with the inner peripheral surface 261 of the male cylinder portion 26. When assembled to the inner bottom surface 27, for example, the seal member 4 is fitted into the cylinder of the male cylinder portion 26 using a predetermined jig and the like, and is pushed into the inner bottom surface 27. Further, the seal member 4 is formed by making the opening 41 one size larger than the inner peripheral portion of the seal member abutting surface 39 of the insertion portion 36 to be described later.

シール部材４を環状とすることで、後述するシール部材突き当て面３９と内底面２７との間で挟持されたときに肉厚方向（挟持方向）のみならず径方向にも弾性変形させやすく、弾性変形により潰れて広がったシール部材４をシール部材突き当て面３９の周縁部に回り込ませることが可能となる。また、シール部材４を環状とすれば、開口４１に相当する分だけコスト低減及び軽量化も図れる。   By making the seal member 4 annular, it is easy to elastically deform not only in the thickness direction (clamping direction) but also in the radial direction when sandwiched between a seal member abutting surface 39 and an inner bottom surface 27 described later, It becomes possible to cause the seal member 4 crushed and expanded by elastic deformation to wrap around the peripheral portion of the seal member abutting surface 39. Further, if the seal member 4 is annular, cost reduction and weight reduction corresponding to the opening 41 can be achieved.

また、シール部材４は、後側（内底面２７への組付側）が平坦に形成されており、内底面２７とも密着する。一方、シール部材４は、前側（後述するシール部材突き当て面３９からの押圧側）に二股のリップ４２が形成されており、シール部材突き当て面３９との接触面積が拡張されている。   Further, the seal member 4 has a flat rear side (an assembly side to the inner bottom surface 27) and is in close contact with the inner bottom surface 27. On the other hand, the sealing member 4 is formed with a bifurcated lip 42 on the front side (the pressing side from the sealing member abutting surface 39 described later), and the contact area with the sealing member abutting surface 39 is expanded.

図２及び図４に示すように、メスハウジング３には、端子（一例としてメス端子）３３を保持する端子収容室３４が内部に形成されている。メス端子３３は、先端側にオス端子２３の端子部２３１が挿入される箱形の接続部３３１が設けられ、防水栓（ゴム等からなるリング部材）３３２が装着された基端側で電線３０の端末に取り付けられている。本実施形態では２本の電線３０に１つずつメス端子３３が取り付けられ、２つのメス端子３３が端子収容室３４の端子保持部３５にオス端子２３と対応して左右に並んで保持されている。防水栓３３２は、例えば電線３０を伝うような端子収容室３４内への浸水の防止を図っている。なお、オス端子２３とメス端子３３の数は同数であれば特に限定されない。   As shown in FIGS. 2 and 4, the female housing 3 is formed with a terminal accommodating chamber 34 that holds terminals (female terminals as an example) 33. The female terminal 33 is provided with a box-shaped connecting portion 331 into which the terminal portion 231 of the male terminal 23 is inserted at the distal end side, and the electric wire 30 on the proximal end side where a waterproof plug (ring member made of rubber or the like) 332 is attached. Is attached to the terminal. In the present embodiment, one female terminal 33 is attached to each of the two electric wires 30, and the two female terminals 33 are held side by side on the terminal holding portion 35 of the terminal accommodating chamber 34 so as to correspond to the male terminal 23. Yes. The waterproof plug 332 prevents, for example, water from entering the terminal accommodating chamber 34 that travels along the electric wire 30. In addition, if the number of the male terminal 23 and the female terminal 33 is the same number, it will not specifically limit.

また、メスハウジング３は、オスハウジング２のオス側筒体部２６の筒体内に挿入される挿入部３６と、挿入部３６の外周を包囲する第２筒体部（以下、メス側筒体部という）３７とを有している。   The female housing 3 includes an insertion portion 36 that is inserted into the cylindrical body of the male side cylindrical portion 26 of the male housing 2 and a second cylindrical portion that surrounds the outer periphery of the insertion portion 36 (hereinafter referred to as a female side cylindrical portion). 37).

メス側筒体部３７は、挿入部３６との間にオス側筒体部２６の肉厚よりも大きな空隙Ｓをあけて挿入部３６の外周を包囲し、該空隙Ｓにオス側筒体部２６を挿入できるように形成されている。メス側筒体部３７には、オス側筒体部２６の外周に設けられた係止突起２１を前後方向（空隙Ｓへのオス側筒体部２６の挿入方向）に係止させる係止アーム３１が設けられている。   The female side cylinder part 37 surrounds the outer periphery of the insertion part 36 with a gap S larger than the thickness of the male side cylinder part 26 between the insertion part 36 and the male side cylinder part in the gap S. 26 can be inserted. A locking arm for locking the locking projection 21 provided on the outer periphery of the male side cylindrical body portion 26 in the front-rear direction (insertion direction of the male side cylindrical body portion 26 into the gap S) is provided on the female side cylindrical body portion 37. 31 is provided.

挿入部３６は、端子収容室３４の端子保持部３５を前後方向へメス端子３２の周囲を覆うように延在させ、メス端子３２の接続部３３１を臨ませる開口３８が先端に形成されている。オス側筒体部２６の筒体内への挿入部３６の挿入時には、開口３８を介して接続部３３１にオス端子２３の端子部２３１（図３参照）が挿入されて、オスハウジング２とメスハウジング３の所期の嵌合位置で端子２３,３３同士が接続される。   The insertion part 36 extends in the front-rear direction so that the terminal holding part 35 of the terminal accommodating chamber 34 covers the periphery of the female terminal 32, and an opening 38 that faces the connection part 331 of the female terminal 32 is formed at the tip. . When the insertion part 36 is inserted into the cylinder of the male side cylinder part 26, the terminal part 231 (see FIG. 3) of the male terminal 23 is inserted into the connection part 331 through the opening 38, and the male housing 2 and the female housing are inserted. The terminals 23 and 33 are connected to each other at an intended fitting position 3.

この場合、挿入部３６は、前後方向の断面形状が四隅を湾曲させた略矩形状をなし、その大きさをオス側筒体部２６の前後方向の断面形状（内底面２７の形状）よりも一回り小さくして形成されている。これにより、挿入部３６は、オス側筒体部２６の筒体内へスムーズに挿入されるようになっている。   In this case, the insertion portion 36 has a substantially rectangular shape in which the cross-sectional shape in the front-rear direction is curved at the four corners, and the size thereof is larger than the cross-sectional shape in the front-rear direction of the male side cylindrical body portion 26 (the shape of the inner bottom surface 27). It is made a little smaller. Thereby, the insertion part 36 is smoothly inserted into the cylinder of the male cylinder part 26.

挿入部３６の先端には、シール部材突き当て面（以下、シール面という）３９が開口３８の周りに形成されている。シール面３９は、所期の嵌合位置、具体的にはオス側筒体部２６の係止突起２１がメス側筒体部３７の係止アーム３１で係止される位置（図１及ぶ図２に示す位置）でシール部材４をオス側筒体部２６の内底面２７との間で挟持する。この場合、シール面３９は、外周部がシール部材４の外周部よりも一回り小さく、内周部がシーズ部材４の内周部（開口４１）よりも一回り小さく形成されている。そして、内底面２７との間でシール部材４を挟持したシール面３９は、後述するように弾性変形したシール部材４と密着する。   A sealing member abutting surface (hereinafter referred to as a sealing surface) 39 is formed around the opening 38 at the distal end of the insertion portion 36. The sealing surface 39 is an intended fitting position, specifically, a position where the locking projection 21 of the male side cylinder part 26 is locked by the locking arm 31 of the female side cylinder part 37 (FIG. 1 and FIG. 1). 2), the seal member 4 is clamped between the inner bottom surface 27 of the male side cylinder portion 26. In this case, the seal surface 39 is formed so that the outer peripheral portion is slightly smaller than the outer peripheral portion of the seal member 4 and the inner peripheral portion is slightly smaller than the inner peripheral portion (opening 41) of the sheath member 4. The seal surface 39 sandwiching the seal member 4 with the inner bottom surface 27 is in close contact with the elastically deformed seal member 4 as will be described later.

本実施形態では、シール面３９は、メス側筒体部３７の先端面３７１よりも挿入部３６の挿入方向の手前側に形成されている。換言すれば、メス側筒体部３７は、先端面３７１がシール面３９の周囲を庇状に覆うようにシール面３９よりも後方に突出して形成されている。   In the present embodiment, the seal surface 39 is formed on the near side in the insertion direction of the insertion portion 36 with respect to the distal end surface 371 of the female side cylindrical portion 37. In other words, the female side cylindrical portion 37 is formed to protrude rearward from the seal surface 39 so that the distal end surface 371 covers the periphery of the seal surface 39 in a bowl shape.

したがって、例えばオスハウジング２と嵌合させる前に、メスハウジング３が床などに落下したような場合であっても、シール面３９がメス側筒体部３７の先端面３７１よりも奥まって位置付けられているから、落下時の衝撃をシール面３９ではなく先端面３７１で受けることができる。すなわち、メス側筒体部３７でシール面３９が保護され、シール面３９の破損等を防ぐことができる。この結果、シール面３９と内底面２７との間でシール部材４を適正に挟持し、シール面３９を確実にシール部材４と密着させることができるから、防水性能を低下させずに済む。   Therefore, for example, even when the female housing 3 is dropped on the floor or the like before being fitted to the male housing 2, the seal surface 39 is positioned deeper than the distal end surface 371 of the female side cylindrical body portion 37. Therefore, the impact at the time of dropping can be received by the front end surface 371 instead of the seal surface 39. That is, the seal surface 39 is protected by the female side cylindrical body portion 37, and the damage or the like of the seal surface 39 can be prevented. As a result, the sealing member 4 can be properly sandwiched between the sealing surface 39 and the inner bottom surface 27, and the sealing surface 39 can be securely brought into close contact with the sealing member 4, so that the waterproof performance does not need to be lowered.

ここで、シール面３９とシール部材４との密着態様について、オスハウジング２とメスハウジング３の嵌合過程に従って説明する。図５には、オスハウジング２がメスハウジング３に挿入された嵌合前（シール面３９とシール部材４とを密着させる前）の状態、図６には、これらのハウジング２,３を所期の嵌合位置で嵌合させた後（シール面３９とシール部材４とを密着させた後）の状態がそれぞれ示されている。   Here, the close contact mode between the seal surface 39 and the seal member 4 will be described according to the fitting process of the male housing 2 and the female housing 3. FIG. 5 shows a state before the male housing 2 is inserted into the female housing 3 (before the sealing surface 39 and the sealing member 4 are brought into close contact with each other), and FIG. 6 shows these housings 2 and 3 as expected. The state after the fitting at the fitting position (after the sealing surface 39 and the sealing member 4 are brought into close contact with each other) is shown.

オスハウジング２とメスハウジング３を嵌合させる場合、図５に示すようにオスハウジング２をメスハウジング３に挿入する。具体的には、挿入部３６とメス側筒体部３７との間の空隙Ｓにオス側筒体部２６を挿入するとともに、該オス側筒体部２６の筒体内に挿入部３６を挿入する。そして、図５に示す状態から挿入部３６をオス側筒体２６の筒体内にさらに挿入すると、シール面３９がシール部材４に突き当たり、該シール部材４を内底面２７へ向けて押圧する。   When fitting the male housing 2 and the female housing 3, the male housing 2 is inserted into the female housing 3 as shown in FIG. 5. Specifically, the male side cylinder part 26 is inserted into the gap S between the insertion part 36 and the female side cylinder part 37, and the insertion part 36 is inserted into the cylinder of the male side cylinder part 26. . Then, when the insertion portion 36 is further inserted into the cylindrical body of the male side cylindrical body 26 from the state shown in FIG. 5, the seal surface 39 hits the seal member 4 and presses the seal member 4 toward the inner bottom surface 27.

この場合、挿入部３６は、図６に示すような所期の嵌合位置でシール面３９が内底面２７との間でシール部材４を挟持可能（換言すればシール面３９でシール部材４を押圧可能）な長さで前後方向に形成されるのに対し、オス側筒体部２６は、所期の嵌合位置で先端部２６２が空隙Ｓの内底面Ｓ１と接触しない長さで前後方向に形成されている。したがって、オス側筒体部２６を空隙Ｓに挿入しても、所期の嵌合位置では先端部２６２が内底面Ｓ１に突き当たらないから、シール面３９と内底面２７との間でシール部材４が確実に挟持されてシール面３９で押圧される。   In this case, the insertion portion 36 can hold the seal member 4 between the seal surface 39 and the inner bottom surface 27 at an intended fitting position as shown in FIG. 6 (in other words, the seal member 4 is held by the seal surface 39). The male side cylinder part 26 is formed in the longitudinal direction with a length that does not contact the inner bottom surface S1 of the gap S at the intended fitting position. Is formed. Therefore, even if the male side cylindrical body portion 26 is inserted into the gap S, the tip end portion 262 does not hit the inner bottom surface S1 at the intended fitting position, so that the seal member between the seal surface 39 and the inner bottom surface 27 is used. 4 is securely clamped and pressed by the seal surface 39.

押圧されたシール部材４は、外周部がシール面３９の外周部よりも一回り大きく、内周部（開口４１）がシール面３９の内周部よりも一回り大きいため、外周部よりも内周部に押圧力を余計に受け、図６に示すように弾性変形により潰れて外周側に広がり、シール面３９の周縁部３９１に回り込んでシール面３９と密着した状態となる（同図の拡大図参照）。係止突起２１が係止アーム３１で係止されてオスハウジング２とメスハウジング３が所期の嵌合位置で嵌合された状態では、シール面３９からシール部材４へのそれ以上の押圧はなされないが、シール部材４は弾性変形により潰れており、該弾性変形による変形力（復元力）が反力としてシール部材４からシール面３９に作用される。このため、シール面３９とシール部材４の密着状態がオスハウジング２とメスハウジング３の嵌合後も維持される。   The pressed seal member 4 has an outer peripheral portion that is slightly larger than the outer peripheral portion of the seal surface 39 and an inner peripheral portion (opening 41) that is slightly larger than the inner peripheral portion of the seal surface 39. As shown in FIG. 6, the peripheral portion receives excessive pressing force, and is crushed by elastic deformation and spreads to the outer peripheral side, and goes around the peripheral portion 391 of the seal surface 39 to be in close contact with the seal surface 39 (see FIG. 6). See enlarged view). In a state where the locking projection 21 is locked by the locking arm 31 and the male housing 2 and the female housing 3 are fitted at the intended fitting position, further pressing from the sealing surface 39 to the sealing member 4 is not performed. Although not made, the seal member 4 is crushed by elastic deformation, and a deformation force (restoring force) due to the elastic deformation acts on the seal surface 39 from the seal member 4 as a reaction force. For this reason, the contact state between the seal surface 39 and the seal member 4 is maintained even after the male housing 2 and the female housing 3 are fitted.

また、シール部材４は、組み付け時においてオス側筒体部２６の内周面２６１及び内底面２７と密着しているが、シール部材４の変形力（弾性復元力）はこれらの面２６１,２７にも作用されるから、シール部材４と内周面２６１及び内底面２７との密着状態もハウジング２,３の嵌合後において維持される。   Further, the seal member 4 is in close contact with the inner peripheral surface 261 and the inner bottom surface 27 of the male side cylinder portion 26 at the time of assembly, but the deformation force (elastic restoring force) of the seal member 4 is the surfaces 261 and 27. Therefore, the close contact state between the seal member 4 and the inner peripheral surface 261 and the inner bottom surface 27 is also maintained after the housings 2 and 3 are fitted.

これにより、例えばメス側筒体部３７やオス側筒体部２６を伝って空隙Ｓに雨水等が浸水したとしても、その雨水等はシール面３９と内底面２７との間に挟持されたシール部材４で堰き止められ、オス端子２３とメス端子３３の接続部分には浸入しないから、端子接続部分の防水を図ることができる。   Thereby, for example, even if rainwater or the like is infiltrated into the gap S through the female side cylindrical portion 37 or the male side cylindrical portion 26, the rainwater or the like is sandwiched between the seal surface 39 and the inner bottom surface 27. Since it is dammed by the member 4 and does not enter the connecting portion between the male terminal 23 and the female terminal 33, the terminal connecting portion can be waterproofed.

また、シール部材４の変形力（弾性復元力）は、係止突起２１と係止アーム３１を係止させる方向（前後方向）に作用されるから、これらをより強固に係止させて嵌合状態におけるハウジング２,３同士のガタつきなどを抑制することができる。この結果、嵌合後におけるオスハウジング２とメスハウジング３の姿勢を安定させることができる。   Further, since the deformation force (elastic restoring force) of the seal member 4 is applied in the direction (front-rear direction) in which the locking projection 21 and the locking arm 31 are locked, the locking force is more firmly locked and the fitting is performed. The play between the housings 2 and 3 in the state can be suppressed. As a result, the postures of the male housing 2 and the female housing 3 after fitting can be stabilized.

このように、本実施形態によれば、端子２３,３３同士の接続部分の防水をシール面３９と内底面２７でシール部材４を挟持させることで行えるから、ハウジング２,３の径方向（上下方向及び左右方向）のサイズアップを抑制してコネクタ１の小型化を図ることができる。そして、メス側筒体部３７でシール面３９を保護し、シール面３９の破損等を防ぐことができるから、コネクタ１の小型化を図りながら、防水性能の低下を抑制することができる。   As described above, according to the present embodiment, waterproofing of the connection portion between the terminals 23 and 33 can be performed by sandwiching the seal member 4 between the seal surface 39 and the inner bottom surface 27. The size of the connector 1 can be reduced by suppressing an increase in size in the direction and the horizontal direction. And since the sealing surface 39 can be protected by the female side cylinder part 37 and the damage of the sealing surface 39 etc. can be prevented, the fall of waterproof performance can be suppressed, aiming at size reduction of the connector 1. FIG.

以上、本発明を図１〜図６に示すような一実施形態に基づいて説明したが、上述した実施形態は本発明の例示に過ぎないものであり、本発明は上述した実施形態の構成のみに限定されるものではない。したがって、本発明の要旨の範囲で変形又は変更された形態で本発明を実施可能であることは、当業者にあっては明白なことであり、そのような変形又は変更された形態が本願の特許請求の範囲に属することは当然のことである。   Although the present invention has been described based on one embodiment as shown in FIGS. 1 to 6, the above-described embodiment is merely an example of the present invention, and the present invention is only the configuration of the above-described embodiment. It is not limited to. Therefore, it is obvious to those skilled in the art that the present invention can be implemented in a form modified or changed within the scope of the gist of the present invention. It goes without saying that it belongs to the claims.

例えば、上述した本実施形態では、シール部材４を環状に形成しているが、シール部材は平板状としてもよいし、平板の周縁部をシール面３９側へ突出させて環状の突条部を形成したような形態などとしても構わない。この場合、シール部材には、オス端子２３の端子部２３１をオス側筒体部２６の筒体内に突出させる貫通孔を形成する。また、ハウジングのオス・メスと、該ハウジングが保持する端子のオス・メスとは本実施形態のように一致していなくともよい。   For example, in the present embodiment described above, the seal member 4 is formed in an annular shape, but the seal member may be a flat plate shape, or the peripheral edge portion of the flat plate protrudes toward the seal surface 39 to form an annular ridge portion. It does not matter even if it is a form as formed. In this case, a through hole is formed in the seal member so that the terminal portion 231 of the male terminal 23 protrudes into the cylindrical body of the male side cylindrical body portion 26. Further, the male and female of the housing and the male and female of the terminal held by the housing do not need to coincide as in this embodiment.

上述した本発明の防水構造は、例えば自動車や自動二輪車等、屋外で雨風に晒されるような環境下で使用されるコネクタに適用することができるが、これに限定されるものではない。   The above-described waterproof structure of the present invention can be applied to a connector used in an environment such as an automobile or a motorcycle that is exposed to rain and wind outdoors, but is not limited thereto.

１ コネクタ
２ ハウジング（オスハウジング）
３ ハウジング（メスハウジング）
４ シール部材
２３ 端子（オス端子）
２４ 端子収容室
２６ 第１筒体部（オス側筒体部）
２７ 内底面
３３ 端子（メス端子）
３４ 端子収容室
３６ 挿入部
３７ 第２筒体部（メス側筒体部）
３９ シール部材突き当て面（シール面）
２３１ 突出部（端子部）
３７１ 先端面 1 Connector 2 Housing (male housing)
3 Housing (female housing)
4 Seal member 23 Terminal (male terminal)
24 terminal accommodating chamber 26 1st cylinder part (male side cylinder part)
27 Inner bottom 33 Terminal (female terminal)
34 Terminal accommodating chamber 36 Insertion part 37 2nd cylinder part (female side cylinder part)
39 Sealing member abutment surface (seal surface)
231 Protruding part (terminal part)
371 Tip surface

Claims (2)

嵌合可能に形成されて所期の嵌合位置で互いに係止する係止機構を有する一対のハウジングと、前記一対のハウジングにそれぞれ形成された端子収容室と、前記端子収容室に保持された端子と、前記端子収容室を防水する弾性変形可能なシール部材とを備え、前記一対のハウジングを嵌合して互いの端子を接続するコネクタの防水構造であって、
前記一対のハウジングの一方は、嵌合方向に延在する第１筒体部を有し、他方は、前記第１筒体部の筒体内に挿入される挿入部と、前記挿入部の外周を包囲する第２筒体部とを有しており、
前記第１筒体部には、筒体内に挿入される前記挿入部の先端と対向して形成された内底面に前記シール部材が組み付けられ、
前記挿入部の先端には、前記所期の嵌合位置で前記シール部材を前記内底面との間で挟持するシール部材突き当て面が前記第２筒体部の先端面よりも挿入方向の手前側に形成されることを特徴とするコネクタの防水構造。 A pair of housings formed so as to be engageable and having a locking mechanism for locking each other at an intended mating position, a terminal accommodating chamber formed in each of the pair of housings, and held in the terminal accommodating chamber A waterproof structure of a connector comprising a terminal and an elastically deformable seal member for waterproofing the terminal accommodating chamber, and connecting the pair of housings to each other,
One of the pair of housings has a first cylinder part extending in the fitting direction, and the other includes an insertion part inserted into the cylinder of the first cylinder part and an outer periphery of the insertion part. A second cylindrical body portion surrounding the second cylindrical body portion,
In the first cylindrical portion, the seal member is assembled to an inner bottom surface formed to face the distal end of the insertion portion inserted into the cylindrical body,
At the distal end of the insertion portion, a sealing member abutting surface that sandwiches the sealing member with the inner bottom surface at the intended fitting position is closer to the insertion direction than the distal end surface of the second cylindrical portion. A waterproof structure for a connector, which is formed on a side. 前記シール部材は、前記第１筒体部の筒体内に臨む開口を有する環状に形成されることを特徴とする請求項１に記載のコネクタの防水構造。   The waterproof structure for a connector according to claim 1, wherein the seal member is formed in an annular shape having an opening facing the cylinder of the first cylinder part.
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