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JP6227579B2 - Connector waterproof structure - Google Patents

Connector waterproof structure Download PDF

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Publication number
JP6227579B2
JP6227579B2 JP2015039348A JP2015039348A JP6227579B2 JP 6227579 B2 JP6227579 B2 JP 6227579B2 JP 2015039348 A JP2015039348 A JP 2015039348A JP 2015039348 A JP2015039348 A JP 2015039348A JP 6227579 B2 JP6227579 B2 JP 6227579B2
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annular portion
housing
connector
male
female
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JP2015039348A
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JP2016162561A (en
Inventor
啓二 ▲濱▼田
啓二 ▲濱▼田
宮川 知之
知之 宮川
和之 落合
和之 落合
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Honda Motor Co Ltd
Yazaki Corp
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Honda Motor Co Ltd
Yazaki Corp
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Priority to JP2015039348A priority Critical patent/JP6227579B2/en
Priority to US15/052,052 priority patent/US9831595B2/en
Priority to CN201610105679.XA priority patent/CN105914521A/en
Publication of JP2016162561A publication Critical patent/JP2016162561A/en
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Publication of JP6227579B2 publication Critical patent/JP6227579B2/en
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Description

本発明は、コネクタの防水構造に関する。   The present invention relates to a waterproof structure for a connector.

従来、自動車等には、電線間を接続する防水コネクタが搭載されている。この種の防水コネクタは、雌端子を収容するキャビティが形成された筒状の雌ハウジングの内部に、雄端子を収容するキャビティが形成された筒状の雄ハウジングを嵌合させて形成される。この場合、雄ハウジングの外周面に装着した環状の防水ゴムを雌ハウジングの内周面に密着させることで、互いに対向するハウジングのキャビティの開口端同士の隙間を水封するようになっている(例えば、特許文献1参照。)。   Conventionally, waterproof connectors for connecting electric wires are mounted on automobiles and the like. This type of waterproof connector is formed by fitting a cylindrical male housing in which a cavity for receiving a male terminal is formed into a cylindrical female housing in which a cavity for receiving a female terminal is formed. In this case, the annular waterproof rubber mounted on the outer peripheral surface of the male housing is brought into close contact with the inner peripheral surface of the female housing, thereby sealing the gap between the opening ends of the housing cavities facing each other ( For example, see Patent Document 1.)

特開2013−51071号公報JP 2013-51071 A

しかしながら、この種のコネクタは、雄ハウジングと雌ハウジングとの隙間に防水ゴムの収容スペースが必要になるため、コネクタの大型化が問題となる。また、例えば、夏場などの高温条件下において、熱膨張した防水ゴムがハウジング同士の隙間から飛び出すことがあり、このような防水ゴムに洗浄用の高圧水が噴き付けられると、防水ゴムがめくれ上がり、内部の防水ゴムが損傷して防水性の低下を招くおそれがある。   However, this type of connector requires a space for accommodating a waterproof rubber in the gap between the male housing and the female housing, so that an increase in size of the connector becomes a problem. Also, for example, under high temperature conditions such as in summer, the thermally expanded waterproof rubber may jump out of the gaps between the housings. The internal waterproof rubber may be damaged, resulting in a decrease in waterproofness.

本発明は、このような問題に鑑みてなされたものであり、高圧洗浄時に高圧水が噴き付けられたときのコネクタの防水性の低下を抑制することを課題とする。   This invention is made | formed in view of such a problem, and makes it a subject to suppress the fall of the waterproofness of a connector when high pressure water is sprayed at the time of high pressure washing.

上記課題を解決するため、本発明のコネクタの防水構造は、互いに接続される端子がそれぞれ収容されたキャビティを有する一対のハウジングを係合し、互いに対向するキャビティの開口間に形成される隙間を水封するコネクタの防水構造において、一対のハウジングは、一方のキャビティの開口周縁に内側環状部が形成され、他方のキャビティの開口周縁に外側環状部が形成され、外側環状部は、内側環状部の先端が当接可能に傾斜する内周面が形成され、内側環状部よりも高い剛性を有して形成されてなることを特徴とする。   In order to solve the above problems, the waterproof structure of the connector of the present invention engages a pair of housings having cavities in which terminals to be connected to each other are accommodated, and has a gap formed between the openings of the cavities facing each other. In the waterproof structure of the water-sealing connector, the pair of housings has an inner annular portion formed at the opening periphery of one cavity, an outer annular portion formed at the opening periphery of the other cavity, and the outer annular portion is an inner annular portion. An inner peripheral surface that is inclined so that the tip of the inner surface can come into contact is formed, and has a higher rigidity than the inner annular portion.

これによれば、一対のハウジングの係合時において、内側環状部と外側環状部が当接することで、互いに対向するキャビティの開口間の隙間を水封することができる。したがって、水封用の防水ゴムが不要になるから、コネクタの小型化が可能になるとともに、防水ゴムの経時劣化や損傷等に起因する防水性の低下を防ぐことができる。特に、内側環状部は、剛性の高い外側環状部で覆われているため、高圧洗浄時に高圧液の接触を抑制することができる。これにより、内側環状部は、高水圧による変形や損傷を防ぐことができるから、外側環状部との接触部の水密性が確保され、高圧洗浄時のコネクタの防水性の低下を抑制することができる。   According to this, when the pair of housings are engaged, the gap between the openings of the cavities facing each other can be sealed with water by contacting the inner annular portion and the outer annular portion. Accordingly, since the waterproof rubber for water sealing is not required, the connector can be miniaturized, and the waterproof property can be prevented from being lowered due to deterioration or damage of the waterproof rubber over time. In particular, since the inner annular portion is covered with a highly rigid outer annular portion, the contact of the high-pressure liquid can be suppressed during high-pressure cleaning. As a result, the inner annular portion can prevent deformation and damage due to high water pressure, so that the water tightness of the contact portion with the outer annular portion is ensured, and the deterioration of the waterproofness of the connector during high-pressure cleaning can be suppressed. it can.

具体的には、例えば、内側環状部が形成される一方のハウジングに、内側環状部と外側環状部が当接する部位を包囲するとともに他方のハウジングが挿入される筒部が形成され、筒部は、軸方向に切り欠いて前方に片持ち状に伸延するアーム片が設けられ、アーム片は、他方のハウジングの外周面と係合して該ハウジングをロックするロック部を有して形成されるものとする。   Specifically, for example, in one housing where the inner annular portion is formed, a cylindrical portion is formed that surrounds a portion where the inner annular portion and the outer annular portion abut and the other housing is inserted. , An arm piece that is cut out in the axial direction and extends forward in a cantilevered manner is provided, and the arm piece is formed to have a lock portion that engages with the outer peripheral surface of the other housing and locks the housing. Shall.

これによれば、外側環状部は、アーム片の伸延方向と反対方向に伸延して設けられるから、アーム片に沿って形成される切り欠き部から筒部内に進入する高圧液を外側環状部によって効率よく遮断し、内側環状部に高圧液が噴き付けられるのを防ぐことができる。   According to this, since the outer annular portion is provided so as to extend in a direction opposite to the extending direction of the arm piece, the outer annular portion allows high pressure liquid entering the cylindrical portion from the notch portion formed along the arm piece. It can cut off efficiently and prevent the high pressure liquid from being sprayed onto the inner annular portion.

本発明によれば、高圧洗浄時に高圧水が噴き付けられたときのコネクタの防水性の低下を抑制することができる。   ADVANTAGE OF THE INVENTION According to this invention, the fall of the waterproofness of a connector when high pressure water is sprayed at the time of high pressure washing | cleaning can be suppressed.

本発明の実施形態のコネクタの分解斜視図である。It is a disassembled perspective view of the connector of embodiment of this invention. 図1のコネクタを雌コネクタの背面側からみた図である。It is the figure which looked at the connector of Drawing 1 from the back side of a female connector. 雄コネクタの外観斜視図である。It is an external appearance perspective view of a male connector. 図3の雄コネクタを構成する雄ハウジングの正面図である。It is a front view of the male housing which comprises the male connector of FIG. 雌コネクタの外観斜視図である。It is an external appearance perspective view of a female connector. 図2のA−A矢視断面図である。It is AA arrow sectional drawing of FIG. 図6の部分拡大図である。It is the elements on larger scale of FIG. 雄コネクタと雌コネクタの嵌合前の動作図である。It is an operation | movement figure before fitting of a male connector and a female connector.

以下、本発明が適用されるコネクタの防水構造の一実施形態について図1乃至図8を参照して説明する。本実施形態では、自動車や自動二輪等に搭載される防水仕様のコネクタを例に説明するが、本発明の防水構造は、この種のコネクタ以外にも適用することができる。   Hereinafter, an embodiment of a waterproof structure for a connector to which the present invention is applied will be described with reference to FIGS. In the present embodiment, a waterproof specification connector mounted on an automobile, a motorcycle, or the like will be described as an example. However, the waterproof structure of the present invention can be applied to other than this type of connector.

本実施形態のコネクタ11は、図1及び図2に示すように、雄コネクタ13と雌コネクタ15から構成され、雄コネクタ13の雄ハウジング17と雌コネクタ15の雌ハウジング19とを互いに係合(嵌合)させて、雄ハウジング17に収容された雄端子21と雌ハウジング19に収容された雌端子23とを電気的に接続するものである。雄端子21には、電線25が接続され、雌端子23には、電線27が接続される。雌ハウジング19は、雄ハウジング17の内側に一端側が嵌め込まれた状態で、雄ハウジング17にロックされるようになっている。本実施形態では、各コネクタに2本ずつ端子を収容する例を説明するが、端子の収容数は2本に限定されるものではない。以下の説明では、図1のX方向を前後方向、Y方向を幅方向、Z方向を高さ方向とし、両コネクタの嵌合方向をそれぞれ前方とし、図1の上側を上方として定義する。   As shown in FIGS. 1 and 2, the connector 11 of this embodiment includes a male connector 13 and a female connector 15, and a male housing 17 of the male connector 13 and a female housing 19 of the female connector 15 are engaged with each other ( The male terminal 21 accommodated in the male housing 17 and the female terminal 23 accommodated in the female housing 19 are electrically connected. An electric wire 25 is connected to the male terminal 21, and an electric wire 27 is connected to the female terminal 23. The female housing 19 is locked to the male housing 17 in a state where one end side is fitted inside the male housing 17. In this embodiment, an example in which two terminals are accommodated in each connector will be described. However, the number of terminals accommodated is not limited to two. In the following description, the X direction in FIG. 1 is defined as the front-rear direction, the Y direction as the width direction, the Z direction as the height direction, the fitting direction of both connectors as the front, and the upper side of FIG.

雄コネクタ13は、図1及び図3に示すように、絶縁性の合成樹脂で円筒状に形成された雄ハウジング17と、雄ハウジング17に後方から収容される雄端子21とを有している。雄ハウジング17は、図6に示すように、雄端子21が収容される雄端子収容室29(キャビティ)が形成された筒状の基部31と、基部31から後方に突出する電線保持部33と、基部31の外周面に沿って前方に突出するフード部(筒部)35とを一体的に備えて形成される。フード部35は、軸方向と直交する断面が長円形の円筒状に形成され、雌ハウジング19が挿入されるようになっている。   As shown in FIGS. 1 and 3, the male connector 13 includes a male housing 17 formed in a cylindrical shape with an insulating synthetic resin, and a male terminal 21 accommodated in the male housing 17 from behind. . As shown in FIG. 6, the male housing 17 includes a cylindrical base 31 in which a male terminal accommodating chamber 29 (cavity) in which the male terminal 21 is accommodated, and an electric wire holding portion 33 that protrudes rearward from the base 31. A hood portion (tubular portion) 35 protruding forward along the outer peripheral surface of the base portion 31 is integrally formed. The hood portion 35 is formed in a cylindrical shape having an oval cross section perpendicular to the axial direction, and the female housing 19 is inserted therein.

フード部35の内面には、図3に示すように、軸方向に延びる案内溝37が形成される。フード部35の前端面と面一で上方に板状に立ち上がる壁部39には、一対の第1切り欠き部41と、一対の第1切り欠き部41の間に形成された第2切り欠き部43とが設けられる。   As shown in FIG. 3, a guide groove 37 extending in the axial direction is formed on the inner surface of the hood portion 35. The wall 39 that rises in a plate shape flush with the front end surface of the hood 35 has a pair of first cutouts 41 and a second cutout formed between the pair of first cutouts 41. Part 43 is provided.

雄端子収容室29は、2個の雄端子25を互いに図示しない隔壁で仕切って収容し、雄端子収容室29の内部に延出させた図示しないランスを各雄端子25に係合させて、設定位置に保持するようになっている。雄端子収容室29は、図4及び図6に示すように、基部31の前端面45に開口する開口端47と、電線保持部33を軸方向に貫通する貫通孔49とを軸方向に連通させて形成される。基部31の前端面45には、開口端47の周縁から軸方向の前方に伸延する樹脂製の内側環状部51が形成される。内側環状部51は、基部31の外周面を全周方向で段付き状に小さくした外周面を有して環状に形成され、フード部35に包囲されている。   The male terminal accommodating chamber 29 divides and accommodates two male terminals 25 with a partition wall (not shown), and engages each male terminal 25 with a lance (not shown) extended into the male terminal accommodating chamber 29. It is held at the set position. As shown in FIGS. 4 and 6, the male terminal accommodating chamber 29 communicates in the axial direction an opening end 47 that opens to the front end surface 45 of the base portion 31 and a through hole 49 that penetrates the electric wire holding portion 33 in the axial direction. Formed. The front end surface 45 of the base portion 31 is formed with a resin-made inner annular portion 51 that extends forward from the periphery of the opening end 47 in the axial direction. The inner annular portion 51 has an outer peripheral surface in which the outer peripheral surface of the base portion 31 is reduced in a stepped shape in the entire circumferential direction, is formed in an annular shape, and is surrounded by the hood portion 35.

雄ハウジング17は、図3に示すように、基部31及びフード部35の外面に沿って軸方向の前方に片持ち状に伸延されたロックアーム53を有している。ロックアーム53は、基部31の幅方向の両側面から上方に立設する一対の壁部55にそれぞれ支持された2つの脚部57と、これらの脚部57に連ねて支持された基端部59と、フード部35を軸方向に切り欠いて基端部59から前方に片持ち状に伸延するアーム部(アーム片)61とを有して形成される。   As shown in FIG. 3, the male housing 17 has a lock arm 53 that is cantilevered forward in the axial direction along the outer surfaces of the base portion 31 and the hood portion 35. The lock arm 53 includes two leg portions 57 respectively supported by a pair of wall portions 55 erected upward from both side surfaces in the width direction of the base portion 31, and a base end portion supported by being connected to the leg portions 57. 59 and an arm portion (arm piece) 61 extending in a cantilevered manner from the base end portion 59 by cutting out the hood portion 35 in the axial direction.

ロックアーム53は、壁部55に支持された基端部59を支点として、アーム部61の前端部が水平方向から上方に変位可能になっている。アーム部61の前端下部には、図6に示すように、下方に突出するロック部63が設けられる。壁部55は、図3に示すように、ロックアーム53を取り囲むようにフード部35の壁部39と連なって枠状に上方へ立ち上げて形成され、壁部39,55に囲まれて形成されるロックアーム53の周囲は、雄ハウジング17の外側から内側を臨むようにフード部35の外壁を切り欠いた開口部64が形成される。ロックアーム53の上端面は、壁部39,55の上端面と同じ高さか、それよりも低い高さに設定される。   The lock arm 53 is configured such that the front end portion of the arm portion 61 can be displaced upward from the horizontal direction with a base end portion 59 supported by the wall portion 55 as a fulcrum. As shown in FIG. 6, a lock portion 63 that protrudes downward is provided at the lower front end of the arm portion 61. As shown in FIG. 3, the wall portion 55 is formed so as to surround the lock arm 53 so as to be connected to the wall portion 39 of the hood portion 35 and rise upward in a frame shape, and is surrounded by the wall portions 39 and 55. An opening 64 is formed around the lock arm 53 by notching the outer wall of the hood 35 so as to face the inside from the outside of the male housing 17. The upper end surface of the lock arm 53 is set to the same height as the upper end surfaces of the wall portions 39 and 55 or lower than that.

雄端子21は、図1に示すように、導電性の金属板材等で形成され、電線25の芯線を圧着接続する電線接続部65と、雌端子23と接続される雄タブ67とを一体的に備えている。雄タブ67は、前後方向に延在して棒状に形成され、雄端子21が雄端子収容室29の設定位置に保持された状態で開口端47から突出されて雄側環状部51の前端よりも前方に延びて設けられる。   As shown in FIG. 1, the male terminal 21 is formed of a conductive metal plate or the like, and an electric wire connection portion 65 that crimps and connects the core wire of the electric wire 25 and a male tab 67 that is connected to the female terminal 23 are integrated. In preparation. The male tab 67 extends in the front-rear direction and is formed in a rod shape. The male tab 21 protrudes from the opening end 47 in a state where the male terminal 21 is held at the set position of the male terminal accommodating chamber 29, and from the front end of the male-side annular portion 51. Is also provided extending forward.

一方、雌コネクタ15は、図1に示すように、絶縁性の合成樹脂で円筒状に形成された雌ハウジング19と、雌ハウジング19に後方から収容される雌端子23とを有している。雌ハウジング19の外周面は、図5及び図6に示すように、軸方向と直交する断面が雄ハウジング17のフード部35の内周面と略相似形に形成され、雌端子23が挿入される2個の雌端子収容室69(キャビティ)が形成された基部71と、基部71から後方に突出する電線保持部73とを一体的に備えて形成される。雌端子収容室69は、2個の雌端子23を互いに図示しない隔壁で仕切って形成され、雌端子収容室69の内部に延出させた図示しないランスを各雌端子23に係合させて、設定位置に保持するようになっている。   On the other hand, as shown in FIG. 1, the female connector 15 has a female housing 19 formed in a cylindrical shape with an insulating synthetic resin, and female terminals 23 accommodated in the female housing 19 from the rear. As shown in FIGS. 5 and 6, the outer peripheral surface of the female housing 19 is formed so that the cross section orthogonal to the axial direction is substantially similar to the inner peripheral surface of the hood portion 35 of the male housing 17, and the female terminal 23 is inserted. The base portion 71 in which two female terminal accommodating chambers 69 (cavities) are formed and the electric wire holding portion 73 projecting rearward from the base portion 71 are integrally formed. The female terminal accommodation chamber 69 is formed by partitioning the two female terminals 23 with a partition wall (not shown), and engages each female terminal 23 with a lance (not shown) extended into the female terminal storage chamber 69. It is held at the set position.

雌端子収容室69は、図5及び図6に示すように、基部71の前端面75に開口する開口端77と、電線保持部73を軸方向に貫通する貫通孔79とを軸方向に連通させて形成される。基部71の前端部は、雄雌ハウジングの嵌合時に内側環状部51と当接する外側環状部81と、内側環状部51の先端部が収容される凹部83とを有して形成される。凹部83は、外側環状部81の内周面85と、基部71の前端面75とに囲まれて形成される。   As shown in FIGS. 5 and 6, the female terminal housing chamber 69 communicates in the axial direction with an opening end 77 that opens to the front end surface 75 of the base portion 71 and a through hole 79 that penetrates the electric wire holding portion 73 in the axial direction. Formed. The front end portion of the base portion 71 is formed having an outer annular portion 81 that contacts the inner annular portion 51 when the male and female housings are fitted, and a concave portion 83 in which the tip end portion of the inner annular portion 51 is accommodated. The recess 83 is formed so as to be surrounded by the inner peripheral surface 85 of the outer annular portion 81 and the front end surface 75 of the base 71.

雌ハウジング19には、図5に示すように、基部71の上面から軸方向に延びる一対の突条部87と、図6に示すように、基部71の下面から軸方向に延びる段差部89が設けられる。一対の突条部87は、幅方向に離れて略平行に設けられ、それぞれ雄ハウジング17の内周面に沿って摺動可能になっている。一対の突条部87の内側には、上方に突出する係止部91が設けられる。係止部91は、前方の基部71に向かって下方に傾斜する傾斜面93が設けられ、両ハウジングの嵌合時に、雄ハウジング17のロックアーム53を傾斜面93に沿って押し上げるようになっている。   As shown in FIG. 5, the female housing 19 has a pair of protrusions 87 extending in the axial direction from the upper surface of the base 71, and a stepped portion 89 extending in the axial direction from the lower surface of the base 71 as shown in FIG. 6. Provided. The pair of protrusions 87 are provided substantially parallel to each other in the width direction, and are slidable along the inner peripheral surface of the male housing 17. A locking portion 91 that protrudes upward is provided inside the pair of protrusions 87. The locking portion 91 is provided with an inclined surface 93 that is inclined downward toward the front base 71, and pushes up the lock arm 53 of the male housing 17 along the inclined surface 93 when the two housings are fitted together. Yes.

雌端子23は、図1に示すように、導電性の金属板材等で形成され、電線27の芯線を圧着接続する電線接続部95と、雄端子21の雄タブ67が挿入接続される角筒状の電気接触部97とを一体的に備えている。電気接触部97は、雌端子23が雌端子収容室69の設定位置に保持された状態で、基部71の開口端77から設定距離だけ後退させた位置に先端部が設けられる。   As shown in FIG. 1, the female terminal 23 is formed of a conductive metal plate or the like, and a rectangular tube into which a wire connecting portion 95 for crimping and connecting a core wire of the electric wire 27 and a male tab 67 of the male terminal 21 are inserted and connected. And an electric contact portion 97 in the form of a single piece. The electrical contact portion 97 is provided with a distal end portion at a position retracted from the opening end 77 of the base 71 by a set distance in a state where the female terminal 23 is held at the set position of the female terminal accommodating chamber 69.

本実施形態のコネクタ11は、雄ハウジング17と雌ハウジング19との嵌合時において、図6及び図7に示すように、雄端子収容室29の開口端47の周縁に形成される内側環状部51と、雌端子収容室69の開口端77の周縁に形成される外側環状部81とが互いに当接して、開口端47と開口端77の隙間を水封するようになっている。   When the male housing 17 and the female housing 19 are fitted to each other, the connector 11 according to the present embodiment has an inner annular portion formed on the periphery of the opening end 47 of the male terminal accommodating chamber 29 as shown in FIGS. 51 and an outer annular portion 81 formed on the periphery of the opening end 77 of the female terminal accommodating chamber 69 are in contact with each other to seal the gap between the opening end 47 and the opening end 77 with water.

内側環状部51は、軸方向にわたって径方向の厚みが所定の厚みに設定され、比較的弾力性を有して形成される。内側環状部51の軸方向の長さは、雄ハウジング17と雌ハウジング19との嵌合時において、外側環状部81の先端部が基部31の前端面45と当接しない程度の長さに設定されている。   The inner annular portion 51 is formed to have a relatively elastic thickness with a predetermined radial thickness over the axial direction. The axial length of the inner annular portion 51 is set to such a length that the distal end portion of the outer annular portion 81 does not contact the front end face 45 of the base portion 31 when the male housing 17 and the female housing 19 are fitted. Has been.

外側環状部81は、外側環状部81が形成される雌ハウジング19の部位(基部71の先端部)の外周面と面一状の外周面99と、先端から奥に向かって肉厚が大きくなり先窄みとなる傾斜面を有する内周面85とを有して形成される。内周面85は、雄ハウジング17と雌ハウジング19の嵌合時において、内側環状部51の先端部が全周にわたって当接可能に形成される。外側環状部81は、少なくとも内側環状部51よりも高い剛性を有して形成され、内側環状部51に押圧されたときに変形しない強度を有している。   The outer annular portion 81 has a wall thickness that increases from the distal end to the rear, and the outer peripheral surface 99 is flush with the outer peripheral surface of the portion of the female housing 19 (the distal end portion of the base 71) where the outer annular portion 81 is formed. And an inner peripheral surface 85 having an inclined surface that is tapered. The inner peripheral surface 85 is formed so that the front end portion of the inner annular portion 51 can contact the entire circumference when the male housing 17 and the female housing 19 are fitted. The outer annular portion 81 is formed to have at least higher rigidity than the inner annular portion 51 and has a strength that does not deform when pressed by the inner annular portion 51.

本実施形態では、雄ハウジング17と雌ハウジング19の嵌合時において、フード部35の外側から開口部64を介してフード部35の内部をみたときに、開口部64から臨む位置、つまり視界の範囲に外側環状部81が位置している。   In the present embodiment, when the male housing 17 and the female housing 19 are fitted, when the inside of the hood part 35 is viewed from the outside of the hood part 35 through the opening part 64, the position facing the opening part 64, that is, the field of view. The outer annular portion 81 is located in the range.

次に、両ハウジングを嵌合する際の動作の一例を説明する。まず、図1に示すように、雄ハウジング17の雄端子収容室29に対して、ゴム栓101を装着した電線25が接続される雄端子21をゴム栓101とともに収容する。また、雌ハウジング19の雌端子収容室69に対して、ゴム栓103を装着した電線27が接続される雌端子23をゴム栓103とともに収容する。この状態で、図8の矢印で示すように、雄コネクタ13の雄ハウジング17と雌コネクタ15の雌ハウジング19を互いに近づける。   Next, an example of operation | movement at the time of fitting both housings is demonstrated. First, as shown in FIG. 1, the male terminal 21 to which the electric wire 25 equipped with the rubber plug 101 is connected is accommodated together with the rubber plug 101 in the male terminal accommodating chamber 29 of the male housing 17. Further, the female terminal 23 to which the electric wire 27 fitted with the rubber plug 103 is connected is accommodated in the female terminal accommodating chamber 69 of the female housing 19 together with the rubber plug 103. In this state, as shown by the arrow in FIG. 8, the male housing 17 of the male connector 13 and the female housing 19 of the female connector 15 are brought close to each other.

雌ハウジング19が雄ハウジング17のフード部35に挿入されると、雌ハウジング19の一対の突条部87がそれぞれ雄ハウジング17の第1切り欠き部41を通過するとともに、雌ハウジング19の係止部91が雄ハウジング17の第2切り欠き部43を通過する。また、雌ハウジング19の段差部89が、雄ハウジング17の案内溝37に沿って案内される。   When the female housing 19 is inserted into the hood portion 35 of the male housing 17, the pair of protrusions 87 of the female housing 19 pass through the first cutout portions 41 of the male housing 17 and the female housing 19 is locked. The portion 91 passes through the second cutout portion 43 of the male housing 17. Further, the stepped portion 89 of the female housing 19 is guided along the guide groove 37 of the male housing 17.

雌ハウジング19の挿入が進むと、雌ハウジング19の係止部91の傾斜面93に沿って、雄ハウジング17のロックアーム53が係止部91に乗り上げて、アーム部61が上方に撓み変形する。そして、アーム部61のロック部63が係止部91を乗り越えたところでアーム部61が弾性復帰する。これにより、係止部91がロック部63に係止されて、両ハウジングが正規の嵌合位置にロックされる。   As the insertion of the female housing 19 proceeds, the lock arm 53 of the male housing 17 rides on the locking portion 91 along the inclined surface 93 of the locking portion 91 of the female housing 19, and the arm portion 61 bends and deforms upward. . Then, when the lock part 63 of the arm part 61 gets over the locking part 91, the arm part 61 returns elastically. Thereby, the latching | locking part 91 is latched by the lock part 63, and both housings are locked to a regular fitting position.

また、これとともに、内側環状部51の先端部は、外側環状部81の内周面85を全周にわたって押圧する。このとき、内側環状部51は、外側環状部81の剛性が高いために弾性変形で内側に押し返されるが、この弾性変形の復元力が外側環状部81の内周面85を押し付けるため、雄側環状部51と雌側環状部81は全周にわたって水密に当接される。これにより、雄端子収容室29の開口端47と雌端子収容室69の開口端77との隙間が水封される。   At the same time, the tip of the inner annular portion 51 presses the inner circumferential surface 85 of the outer annular portion 81 over the entire circumference. At this time, the inner annular portion 51 is pushed back inward by elastic deformation because the rigidity of the outer annular portion 81 is high. However, since the restoring force of this elastic deformation presses the inner peripheral surface 85 of the outer annular portion 81, The side annular portion 51 and the female side annular portion 81 are in watertight contact over the entire circumference. As a result, the gap between the opening end 47 of the male terminal housing chamber 29 and the opening end 77 of the female terminal housing chamber 69 is sealed with water.

ところで、このようにして雄ハウジング17と雌ハウジング19が嵌合されたコネクタ11は、アーム部61を包囲するように形成された開口部64を介してフード部35の内部が開放されている。そのため、例えば、車両の洗浄時等において、洗浄用の高圧液がコネクタ11に噴き付けられると、その高圧液は、開口部64を介してフード部35の内側に進入し、雄側環状部51と雌側環状部81が当接する部位に接触する。この場合、比較的柔らかい内側環状部51は、高圧液が接触することで変形や破損を招くことがあり、その結果、外側環状部81との間に隙間が生じて、防水性が低下するおそれがある。   By the way, in the connector 11 in which the male housing 17 and the female housing 19 are fitted in this way, the inside of the hood portion 35 is opened through an opening 64 formed so as to surround the arm portion 61. Therefore, for example, when the high pressure liquid for cleaning is sprayed on the connector 11 at the time of cleaning the vehicle or the like, the high pressure liquid enters the inside of the hood portion 35 through the opening 64 and the male side annular portion 51. And the female-side annular portion 81 comes into contact with the contacted portion. In this case, the relatively soft inner annular portion 51 may be deformed or damaged by contact with the high-pressure liquid, and as a result, a gap may be formed between the outer annular portion 81 and the waterproof property may be reduced. There is.

この点、本実施形態では、雄ハウジング17と雌ハウジング19の嵌合時において、内側環状部51の外側に内側環状部51よりも剛性の高い外側環状部81が位置するように配置され、内側環状部51の先端部が雌ハウジング19の内側に形成された凹部83に収容されている。すなわち、内側環状部51の先端部は、外側環状部81に覆われている。そのため、フード部35に浸入した高圧液は、外側環状部81に接触することがあっても、内側環状部51と接触することがない。また、外側環状部81は、所定の剛性を有しているため、高圧液が接触しても、変形することがない。したがって、本実施形態によれば、高圧洗浄時においても、内側環状部51の変形や損傷を防止できるから、外側環状部51と内側環状部81との水密状態を保持することができ、コネクタ11の防水性の低下を抑制することができる。   In this regard, in the present embodiment, when the male housing 17 and the female housing 19 are fitted, the outer annular portion 81 having a rigidity higher than that of the inner annular portion 51 is positioned outside the inner annular portion 51, The tip of the annular portion 51 is accommodated in a recess 83 formed inside the female housing 19. That is, the front end portion of the inner annular portion 51 is covered with the outer annular portion 81. Therefore, the high-pressure liquid that has entered the hood portion 35 does not contact the inner annular portion 51 even if it contacts the outer annular portion 81. Further, since the outer annular portion 81 has a predetermined rigidity, it does not deform even when the high-pressure liquid contacts it. Therefore, according to the present embodiment, deformation and damage of the inner annular portion 51 can be prevented even during high-pressure cleaning, so that the watertight state of the outer annular portion 51 and the inner annular portion 81 can be maintained, and the connector 11 It is possible to suppress a decrease in waterproofness.

また、フード部35の開口部64は、軸方向に沿って雄ハウジング17の前方に延びて形成されるため、内側環状部51と外側環状部81が当接する部位に噴き付けられる高圧液は、開口部64に対して垂直方向から進入する以外に、図6の矢印Aで示すように、雄ハウジング17の前方側から斜めに進入する場合がある。そのため、例えば、外側環状部81が本実施形態と反対の雄ハウジング17側に設けられ、雌ハウジング19側に向かって伸延していると、外側環状部81の先端付近に内側環状部51の基端側の露出部分が位置されるから、この露出部分に高圧液が接触し易くなる。   Moreover, since the opening part 64 of the hood part 35 is extended and formed ahead of the male housing 17 along an axial direction, the high pressure liquid sprayed on the site | part which the inner side annular part 51 and the outer side annular part 81 contact | abut is In addition to entering from the vertical direction with respect to the opening 64, there is a case where it enters obliquely from the front side of the male housing 17 as indicated by an arrow A in FIG. Therefore, for example, when the outer annular portion 81 is provided on the male housing 17 side opposite to the present embodiment and extends toward the female housing 19 side, the base of the inner annular portion 51 is located near the tip of the outer annular portion 81. Since the end-side exposed portion is positioned, the high-pressure liquid easily comes into contact with the exposed portion.

この点、本実施形態では、外側環状部81が雌ハウジング19側に設けられ、雄ハウジング17側に向かって伸延されるから、図7に示すように、内側環状部51の基端側の露出部分105が開口部64からみると、外側環状部81に隠れた状態となる。したがって、図6の矢印Aの方向から高圧液が進入しても、内側環状部51の露出部分105に高圧液が接触することがなく、コネクタ11の防水性の低下をより確実に抑制することができる。   In this regard, in the present embodiment, the outer annular portion 81 is provided on the female housing 19 side and extends toward the male housing 17 side, so that the proximal end side exposure of the inner annular portion 51 is performed as shown in FIG. When viewed from the opening 64, the portion 105 is hidden by the outer annular portion 81. Therefore, even if the high-pressure liquid enters from the direction of arrow A in FIG. 6, the high-pressure liquid does not come into contact with the exposed portion 105 of the inner annular portion 51, and the deterioration of the waterproof property of the connector 11 is more reliably suppressed. Can do.

以上述べたように、本実施形態のコネクタ11では、内側環状部51が外側環状部81で覆われているため、内側環状部51に高圧液が接触するのを抑制することができる。これにより、内側環状部51の変形や損傷等を防ぐことができるから、高圧洗浄時においても、内側環状部51と外側環状部81との水密状態を保持することができ、コネクタ11の防水性の低下を抑制することができる。したがって、内側環状部51と外側環状部81によって水封された空間内において、端子間の短絡や端子の腐食等を防ぐことができ、コネクタ11の電気的な信頼性を高めることができる。   As described above, in the connector 11 of the present embodiment, since the inner annular portion 51 is covered with the outer annular portion 81, it is possible to suppress the high pressure liquid from contacting the inner annular portion 51. As a result, deformation or damage of the inner annular portion 51 can be prevented, so that the watertight state between the inner annular portion 51 and the outer annular portion 81 can be maintained even during high-pressure cleaning, and the waterproofness of the connector 11 can be maintained. Can be suppressed. Therefore, in the space sealed by the inner annular portion 51 and the outer annular portion 81, it is possible to prevent a short circuit between terminals, corrosion of the terminals, and the like, and to increase the electrical reliability of the connector 11.

また、本実施形態のコネクタ11では、内側環状部51と外側環状部81をそれぞれ樹脂で形成し、これらを互いに当接させて各端子収容室を水封しているから、防水用のゴムパッキン等が不要になる。そのため、ゴムパッキンの経時劣化や高圧水の破損等に起因する防水性の低下を防ぐことができ、コネクタ11の防水性を長期間維持することができる。加えて、ゴムパッキンを設けるスペースが不要になるから、コネクタ11の小型化を図ることができ、製造コストを削減することができる。   Further, in the connector 11 of the present embodiment, the inner annular portion 51 and the outer annular portion 81 are each formed of resin, and are in contact with each other to seal each terminal accommodating chamber, so that a waterproof rubber packing is provided. Etc. become unnecessary. For this reason, it is possible to prevent a decrease in waterproofness due to deterioration of the rubber packing over time, breakage of high-pressure water, and the like, and the waterproofness of the connector 11 can be maintained for a long time. In addition, since a space for providing rubber packing is not required, the connector 11 can be reduced in size, and the manufacturing cost can be reduced.

また、内側環状部51は、弾力性(バネ性)を有しており、全周にわたって外側環状部51を押圧するように形成されるから、例えば、コネクタ11に振動が伝播されて、両環状部51,81が軸方向に振動したとしても、外側環状部81は、内側環状部51との接触状態を維持しながら、弾性変形して振動を吸収する。これにより、雄雌ハウジングのガタ付きが生じることがなく、振動に伴うコネクタ11の経時劣化等を抑制することができる。   The inner annular portion 51 has elasticity (spring property) and is formed so as to press the outer annular portion 51 over the entire circumference. Even if the portions 51 and 81 vibrate in the axial direction, the outer annular portion 81 elastically deforms and absorbs vibration while maintaining a contact state with the inner annular portion 51. Thereby, the rattling of the male and female housings does not occur, and deterioration over time of the connector 11 due to vibration can be suppressed.

以上、本発明の実施形態を図面により詳述してきたが、上記の実施形態は本発明の例示にしか過ぎないものであり、請求項に記載された範囲内において変更・変形することが可能である。   As mentioned above, although embodiment of this invention was explained in full detail with drawing, said embodiment is only the illustration of this invention, It can change and change within the range described in the claim. is there.

例えば、本実施形態の外側環状部81は、高圧水が接触しても変形しない程度の剛性を有して形成されるが、少なくとも内側環状部51よりも高い剛性を有していればよい。すなわち、雄ハウジング17と雌ハウジング19の嵌合時においては、内側環状部51が外側環状部81の内周面85を外側に押圧しているため、高圧水が外側環状部81に接触して外側環状部81が内側に多少変形したとしても、その変形方向は内側環状部51を押圧する方向であるから、内側環状部51と外側環状部81との接触状態は確保される。   For example, the outer annular portion 81 of the present embodiment is formed with a rigidity that does not deform even when high-pressure water comes into contact, but it is sufficient that the outer annular portion 81 has a rigidity higher than at least the inner annular portion 51. That is, when the male housing 17 and the female housing 19 are fitted, the inner annular portion 51 presses the inner peripheral surface 85 of the outer annular portion 81 outward, so that the high-pressure water contacts the outer annular portion 81. Even if the outer annular portion 81 is slightly deformed inward, the deformation direction is a direction in which the inner annular portion 51 is pressed, so that the contact state between the inner annular portion 51 and the outer annular portion 81 is ensured.

11 コネクタ
13 雄コネクタ
15 雌コネクタ
17 雄ハウジング
19 雌ハウジング
21 雄端子
23 雌端子
29 雄端子収容室(キャビティ)
35 フード部(筒部)
47 開口端(雄ハウジング)
51 内側環状部
61 アーム部(アーム片)
63 ロック部
69 雌端子収容室(キャビティ)
77 開口端(雌ハウジング)
81 外側環状部
DESCRIPTION OF SYMBOLS 11 Connector 13 Male connector 15 Female connector 17 Male housing 19 Female housing 21 Male terminal 23 Female terminal 29 Male terminal accommodation chamber (cavity)
35 Hood (Cylinder)
47 Open end (male housing)
51 Inner ring part 61 Arm part (arm piece)
63 Locking part 69 Female terminal housing (cavity)
77 Open end (female housing)
81 Outer ring part

Claims (1)

互いに接続される端子がそれぞれ収容されたキャビティを有する一対のハウジングを係合し、互いに対向する前記キャビティの開口間に形成される隙間を水封するコネクタの防水構造において、
前記一対のハウジングは、一方の前記キャビティの開口周縁に内側環状部が形成され、他方の前記キャビティの開口周縁に外側環状部が形成され、
前記外側環状部は、前記内側環状部の先端が当接可能に傾斜する内周面が形成され、前記内側環状部よりも高い剛性を有して形成されてなり、
前記内側環状部が形成される一方の前記ハウジングに、前記内側環状部と前記外側環状部が当接する部位を包囲するとともに他方の前記ハウジングが挿入される筒部が形成され、
前記筒部は、軸方向に切り欠いて前方に片持ち状に伸延するアーム片が設けられ、該アーム片は、他方の前記ハウジングの外周面と係合して該ハウジングをロックするロック部を有して形成されることを特徴とするコネクタの防水構造。
In a waterproof structure of a connector that engages a pair of housings having cavities in which terminals to be connected to each other are accommodated, and seals a gap formed between openings of the cavities facing each other,
In the pair of housings, an inner annular portion is formed on the opening periphery of one of the cavities, and an outer annular portion is formed on the opening periphery of the other of the cavities,
Said outer annular portion, said inner peripheral surface leading end of the inner annular portion is abuttable against tilting is formed, Ri Na is formed has a higher rigidity than the inner annular portion,
One of the housings in which the inner annular portion is formed is formed with a cylindrical portion that surrounds a portion where the inner annular portion and the outer annular portion abut, and into which the other housing is inserted,
The cylindrical portion is provided with an arm piece that is cut out in the axial direction and extends forward in a cantilevered manner. The arm piece engages with the outer peripheral surface of the other housing to lock the housing. waterproof structure of the connector, characterized in that it is formed having.
JP2015039348A 2015-02-25 2015-02-27 Connector waterproof structure Expired - Fee Related JP6227579B2 (en)

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3880487A (en) * 1973-07-20 1975-04-29 Itt Low cost sealed connector
JPH0322366U (en) * 1989-07-13 1991-03-07
US5580266A (en) * 1995-03-10 1996-12-03 The Whitaker Corporation High voltage low current connector interface
JP3478385B2 (en) * 2000-05-11 2003-12-15 住友電装株式会社 Waterproof connector
BR112012015585A2 (en) * 2009-12-24 2017-04-25 Fci Automotive Holding connector arrangement
JP5818100B2 (en) * 2012-05-16 2015-11-18 株式会社オートネットワーク技術研究所 Waterproof connector

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