JP2009037844A

JP2009037844A - Connector

Info

Publication number: JP2009037844A
Application number: JP2007200711A
Authority: JP
Inventors: Hideki Matsunaga; 英樹松永
Original assignee: Sumitomo Wiring Systems Ltd
Current assignee: Sumitomo Wiring Systems Ltd
Priority date: 2007-08-01
Filing date: 2007-08-01
Publication date: 2009-02-19
Anticipated expiration: 2027-08-01
Also published as: JP4985194B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector capable of obtaining an excellent function of preventing its loosening. <P>SOLUTION: A male housing 30 has a tubular part 32. A female housing 10 has a fit-in portion 14 fit in the tubular part 32. A seal ring 18 is mounted to the fit-in portion 14 and compressed between opposed surfaces of the fit-in portion 14 and the tubular part 32 in order to seal both the housings 10 and 30. Loosening prevention portions 19 are provided at the fit-in portion 14 to fill a gap between the opposed surfaces of the fit-in portion 14 and the tubular part 32 and to prevent both the housings 10 and 30 from being radially loosened. A curved surface 26 is formed in a part of the surface of the fit-in portion 14 which is opposed to the tubular part 32 and provided with the seal ring 18. A flat surface 27 integrally provided with the loosening preventing portions 19 is formed at a position of the surface of the fit-in portion 14 which is opposed to the tubular part 32 and shifted to the front direction of the curved surface 26. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、防水機能を備えたコネクタに関する。 The present invention relates to a connector having a waterproof function.

従来、防水機能を備えたコネクタにおいて振動対策を施したものの一例として下記特許文献１に記載されたものが知られている。このものは、互いに嵌合可能な雄雌のハウジングのうち、雌ハウジングが雌端子金具を収容する端子収容部と、端子収容部の周りを取り囲む保護筒部とを繋げた構成とされるのに対し、雄ハウジングは雄端子金具のタブを取り囲む筒状部を有しており、嵌合時にはこの筒状部が端子収容部と保護筒部との間に嵌め込まれるようになっている。そして、端子収容部の外周面には、後端位置に防水のためのシールリングが装着されるとともに、そのシールリングの前側位置に両ハウジングをがたつき規制するためのがたつき規制部材が装着されている。がたつき規制部材によって端子収容部と筒状部との間の隙間が埋められることで、両ハウジングが径方向にがたつくのが規制されるようになっている。
特開２００４−２８１３７０公報 2. Description of the Related Art Conventionally, a connector described in Patent Document 1 below is known as an example of a connector having a waterproof function in which measures against vibration are taken. This is because the female housing of the male and female housings that can be fitted to each other is connected to the terminal housing portion that houses the female terminal fitting and the protective cylinder portion that surrounds the terminal housing portion. On the other hand, the male housing has a cylindrical portion surrounding the tab of the male terminal fitting, and when fitted, this cylindrical portion is fitted between the terminal accommodating portion and the protective cylinder portion. A waterproof seal ring is attached to the outer peripheral surface of the terminal accommodating portion at the rear end position, and a rattling restricting member for rattling and restricting both housings at the front position of the seal ring is provided. It is installed. The backlash between the terminal accommodating portion and the cylindrical portion is filled by the rattling regulating member, so that the two housings are regulated from rattling in the radial direction.
JP 2004-281370 A

ところで、上記したコネクタでは、がたつき規制部材が雌ハウジングとは別部品となっているため、雌ハウジングの端子収容部に対する組み付けに伴って端子収容部との間で位置ずれが生じる可能性があり、がたつき規制機能を良好に発揮できなくなるおそれがあった。 By the way, in the connector described above, since the rattling regulating member is a separate part from the female housing, there is a possibility that displacement occurs between the female housing and the terminal housing portion when the female housing is assembled to the terminal housing portion. There is a possibility that the rattling control function cannot be satisfactorily exhibited.

それを防ぐには、がたつき規制部を雌ハウジングの端子収容部に一体形成することが考えられる。しかしながら、雌ハウジングにおける端子収容部の外周面は、シールリングを装着する都合上全域がＲ面となっているため、そこにがたつき規制部を一体形成しようとすると、端子収容部の外周面からの突出量の精度を管理するのが難しく、がたつき規制機能を確実に発揮させるのが困難であった。 In order to prevent this, it is conceivable that the rattling regulating portion is formed integrally with the terminal accommodating portion of the female housing. However, since the outer peripheral surface of the terminal accommodating portion in the female housing is an R surface for the convenience of mounting the seal ring, if an attempt is made to integrally form the rattle regulating portion there, the outer peripheral surface of the terminal accommodating portion It was difficult to manage the accuracy of the amount of protrusion from the head, and it was difficult to reliably exert the rattling control function.

本発明は上記のような事情に基づいて完成されたものであって、良好ながたつき規制機能が得られるコネクタを提供することを目的とする。 The present invention has been completed based on the above-described circumstances, and an object thereof is to provide a connector capable of obtaining a favorable rattling control function.

本発明は、筒状部を備える一方のコネクタハウジングと、前記筒状部内に嵌合される嵌合部を有する他方のコネクタハウジングと、前記嵌合部における前記筒状部との対向周面に装着され、前記筒状部側の対向周面との間で圧縮されることで両コネクタハウジング間のシールをとるためのシールリングと、前記嵌合部における前記筒状部との対向周面に設けられ、前記筒状部側の対向周面との間の隙間を埋めて前記両コネクタハウジングが径方向にがたつくのを規制するためのがたつき規制部と、前記嵌合部における前記筒状部との対向周面のうち、前記シールリングが装着される部分に形成される曲面と、前記嵌合部における前記筒状部との対向周面のうち、前記曲面の前方または後方にずれた位置に形成されるとともに、前記がたつき規制部が一体形成される平坦面とを備える。 The present invention provides a connector housing provided with a cylindrical portion, an other connector housing having a fitting portion fitted in the cylindrical portion, and an opposed peripheral surface of the cylindrical portion in the fitting portion. A seal ring for sealing between the two connector housings by being mounted and compressed between the opposing peripheral surfaces on the cylindrical portion side, and an opposing peripheral surface of the cylindrical portion in the fitting portion A rattling restricting portion provided to fill a gap between the opposing peripheral surfaces on the tubular portion side and restrict the two connector housings from rattling in the radial direction; and the tubular shape in the fitting portion Out of the peripheral surface facing the portion, the curved surface formed in the portion where the seal ring is mounted and the peripheral surface facing the cylindrical portion in the fitting portion are shifted forward or backward of the curved surface. And the rattling ruler is formed at a position. Part comprises a flat surface which is integrally formed.

両コネクタハウジングを嵌合させると、筒状部と嵌合部との対向周面間でシールリングが圧縮されることで両コネクタハウジング間のシールがとられるとともに、筒状部と嵌合部との対向周面間の隙間ががたつき規制部により埋められることで両コネクタハウジングが径方向にがたつくのが規制される。嵌合部における筒状部との対向周面のうち、シールリングが装着される部分に曲面が形成されているので、良好なシール性能を発揮することができる。一方、嵌合部における筒状部との対向周面のうち曲面の前方または後方にずれた位置に形成された平坦面にがたつき規制部が一体形成されているので、がたつき規制部の寸法管理が容易になる。これにより、がたつき規制機能を確実に発揮させることができる。 When the two connector housings are fitted, the seal ring is compressed between the opposed peripheral surfaces of the tubular portion and the fitting portion, thereby sealing the two connector housings, and the tubular portion and the fitting portion. The gap between the opposing peripheral surfaces is filled with the rattling regulating portion, so that both connector housings are regulated from rattling in the radial direction. Since the curved surface is formed in the part where the seal ring is mounted in the peripheral surface of the fitting portion facing the cylindrical portion, good sealing performance can be exhibited. On the other hand, since the rattling regulating portion is integrally formed on the flat surface formed at a position shifted to the front or rear of the curved surface of the peripheral surface of the fitting portion facing the cylindrical portion, the rattling regulating portion Dimension management becomes easy. Thereby, the rattling control function can be exhibited reliably.

本発明の実施態様として、次の構成が好ましい。
（１）前記平坦面は、前記嵌合部において前記曲面よりも前側に配置される構成とする。このようにすれば、筒状部のうち前端側と比べて開き難い根元側ががたつき規制部に当接されるから、より良好ながたつき規制機能が得られる。 The following configuration is preferable as an embodiment of the present invention.
(1) The said flat surface shall be the structure arrange | positioned ahead of the said curved surface in the said fitting part. In this way, since the base side that is hard to open compared to the front end side of the cylindrical portion is brought into contact with the rattling regulating portion, a better rattling regulating function can be obtained.

（２）前記嵌合部における前記平坦面よりも後側には、前記平坦面よりも径方向外側に張り出す張出部が形成され、この張出部に前記曲面が形成される構成とする。このようにすれば、がたつき規制部が形成された平坦面が曲面よりも径方向内側に引っ込んでいるから、嵌合部にシールリングを装着する際にがたつき規制部がシールリングに干渉するのを回避することができる。これにより、シールリングに傷が付くなどしてシール性能が劣化する事態が防がれる。 (2) A protruding portion that protrudes radially outward from the flat surface is formed behind the flat surface in the fitting portion, and the curved surface is formed in the protruding portion. . In this way, since the flat surface on which the rattling restricting portion is formed is retracted radially inward from the curved surface, the rattling restricting portion becomes the seal ring when the seal ring is attached to the fitting portion. Interference can be avoided. This prevents a situation in which the sealing performance is deteriorated due to scratches on the sealing ring.

（３）前記筒状部は、前記シールリングと前記がたつき規制部とのいずれか一方に当接される内筒部と、この内筒部の径方向外側に配されその間に溝部を保有するとともに前記シールリングと前記がたつき規制部との他方側に当接される外筒部とから構成されるようにする。このようにすれば、内筒部と外筒部とが溝部を介して分けられているから、嵌合状態においてシールリングから作用する応力が内筒部と外筒部とのうちがたつき規制部に当接される側に影響し難く、もってがたつき規制機能が経時的に劣化するのを防ぐことができる。 (3) The cylindrical portion is disposed on the radially outer side of the inner cylindrical portion that is in contact with either the seal ring or the rattling regulating portion, and has a groove portion therebetween. At the same time, the seal ring and the outer cylinder portion which is in contact with the other side of the rattling regulating portion are configured. In this way, since the inner cylinder part and the outer cylinder part are separated via the groove part, the stress acting from the seal ring in the fitted state is controlled by rattling between the inner cylinder part and the outer cylinder part. It is difficult to affect the side that is in contact with the portion, and the rattling control function can be prevented from deteriorating over time.

（４）前記溝部は、前記両コネクタハウジングが嵌合した状態で前記がたつき規制部及び前記シールリングの前端位置よりも奥深くにまで形成される構成とする。このようにすれば、シールリングから作用する応力が、内筒部と外筒部とのうちがたつき規制部に当接される側へ一層影響し難くなる。 (4) The groove is configured to be formed deeper than the front end positions of the backlash restricting portion and the seal ring in a state where the two connector housings are fitted. In this way, the stress acting from the seal ring is less likely to affect the side of the inner cylinder portion and the outer cylinder portion that comes into contact with the rattling restriction portion.

（５）前記シールリングは、前記内筒部または前記外筒部の前端部によって圧縮される構成とする。このようにすれば、シールリングからの応力が内筒部または外筒部の前端部で受けられることになるので、それよりも根元側で受けた場合と比べると、内筒部と外筒部とのうちがたつき規制部に当接される側への応力の影響を一層低減できる。 (5) The seal ring is configured to be compressed by the front end portion of the inner tube portion or the outer tube portion. In this way, the stress from the seal ring is received at the front end portion of the inner tube portion or the outer tube portion, so that the inner tube portion and the outer tube portion are compared with the case where the stress is received at the base side. Further, it is possible to further reduce the influence of stress on the side abutting on the rattling regulating portion.

（６）前記内筒部が前記がたつき規制部に当接され、前記外筒部が前記シールリングに当接される構成とする。このようにすれば、内筒部と外筒部との間に形成される溝部のスペースを利用してシールリングを設置することができるので、径方向について小型化を図ることができる。 (6) The inner cylinder part is in contact with the rattling regulating part, and the outer cylinder part is in contact with the seal ring. In this way, since the seal ring can be installed using the space of the groove formed between the inner cylinder part and the outer cylinder part, it is possible to reduce the size in the radial direction.

（７）前記外筒部は、前記内筒部よりも前方へ突き出しており、前記外筒部のうち前記シールリングに当接される部分よりも後側の部分と前記内筒部とが補強部によって周方向について部分的に連結される構成とする。このようにすれば、がたつき規制部に当接される内筒部の強度を高めることができ、がたつき規制機能を強化できる。一方、外筒部のうちシールリングに当接される部分は、補強部によって内筒部とは連結されないので、シールリングの応力の内筒部への影響は軽微なもので済む。 (7) The outer cylinder portion protrudes forward from the inner cylinder portion, and a portion on the rear side of the outer cylinder portion that is in contact with the seal ring and the inner cylinder portion are reinforced. It is set as the structure connected partially about the circumferential direction by a part. If it does in this way, the intensity | strength of the inner cylinder part contact | abutted to the shakiness regulation part can be raised, and the shakiness regulation function can be strengthened. On the other hand, the portion of the outer cylindrical portion that is in contact with the seal ring is not connected to the inner cylindrical portion by the reinforcing portion, so that the influence of the stress of the seal ring on the inner cylindrical portion is negligible.

（８）前記補強部は、周方向についての配設位置が前記がたつき規制部と同じになっている構成とする。このようにすれば、がたつき規制機能を一層高くすることができる。 (8) The reinforcing portion has a configuration in which the arrangement position in the circumferential direction is the same as that of the rattling regulating portion. In this way, the rattling control function can be further enhanced.

（９）前記外筒部は、前記内筒部よりも前方へ突き出しており、前記内筒部の奥壁からは、前記他方のコネクタハウジングが傾いた姿勢で嵌合されるのを規制するためのこじり防止部が前方へ突き出して形成され、このこじり防止部の前端位置が前記内筒部の前端位置と前記外筒部の前端位置との間に設定される構成とする。このようにすれば、こじり防止部が内筒部よりも前方へ突き出しているから、他方のコネクタハウジングが傾いた姿勢で嵌合されようとした場合でも他方のコネクタハウジングが内筒部に干渉するのを防ぐことができる。これにより、がたつき規制部に当接される内筒部に変形が生じるのが防がれ、もってがたつき規制機能を良好に発揮することができる。また、こじり防止部が外筒部よりも後側に引っ込んでいるから、こじり防止部を外筒部によって保護できる。 (9) The outer tube portion projects forward from the inner tube portion, and restricts the other connector housing from being fitted in an inclined posture from the inner wall of the inner tube portion. The kink preventing part is formed to protrude forward, and the front end position of the kink preventing part is set between the front end position of the inner cylinder part and the front end position of the outer cylinder part. In this way, since the kink preventing part protrudes forward from the inner cylinder part, the other connector housing interferes with the inner cylinder part even when the other connector housing is about to be fitted in an inclined posture. Can be prevented. Thereby, it is prevented that a deformation | transformation arises in the inner cylinder part contact | abutted by the rattling regulating part, and the rattling regulating function can be exhibited satisfactorily. Moreover, since the kink preventing part is retracted to the rear side of the outer cylinder part, the kink preventing part can be protected by the outer cylinder part.

本発明によれば、良好ながたつき規制機能が得られるコネクタを提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the connector from which a favorable rattling control function is obtained can be provided.

＜実施形態＞
本発明の一実施形態を図１ないし図１１によって説明する。本実施形態では、互いに嵌合可能な雌コネクタハウジング１０（以下、単に雌ハウジング１０という）と、雄コネクタハウジング３０（以下、単に雄ハウジング３０という）とを有し、防水機能を備えるコネクタＣについて例示する。なお、以下では、両ハウジング１０，３０における嵌合面側を前方、その逆側を後方とし、また上下方向については図１，図２，図４及び図７などを基準とする。 <Embodiment>
An embodiment of the present invention will be described with reference to FIGS. In this embodiment, a connector C having a female connector housing 10 (hereinafter simply referred to as a female housing 10) and a male connector housing 30 (hereinafter simply referred to as a male housing 30) that can be fitted to each other and having a waterproof function. Illustrate. In the following, the fitting surface side in both housings 10 and 30 is the front, the opposite side is the rear, and the vertical direction is based on FIGS. 1, 2, 4 and 7 and the like.

雌ハウジング１０は、合成樹脂製とされ、図２，図４及び図５に示すように、電線の端末に接続された雌端子金具（電線共々図示は省略する）が収容される端子収容部１１と、端子収容部１１の前側部分（嵌合部１４）の周りを取り囲む保護筒部１２とが連結部１３によって連結された構成とされる。これら端子収容部１１と保護筒部１２との間に確保された前方へ開口する空間内に雄ハウジング３０の筒状部３２が嵌合可能とされる。端子収容部１１のうち保護筒部１２によって取り囲まれる前側部分が雄ハウジング３０の筒状部３２内に嵌合される嵌合部１４とされる。連結部１３は、端子収容部１１の外周面のうち嵌合部１４の直後位置から径方向外側へ張り出す形態とされている。 The female housing 10 is made of synthetic resin, and as shown in FIGS. 2, 4 and 5, a terminal accommodating portion 11 for accommodating a female terminal fitting (not shown). And the protection cylinder part 12 surrounding the circumference | surroundings of the front side part (fitting part 14) of the terminal accommodating part 11 is set as the structure connected by the connection part 13. FIG. The cylindrical portion 32 of the male housing 30 can be fitted into a space opened forward between the terminal accommodating portion 11 and the protective cylinder portion 12. A front side portion of the terminal housing portion 11 surrounded by the protective cylinder portion 12 is a fitting portion 14 that is fitted into the cylindrical portion 32 of the male housing 30. The connecting part 13 is configured to project radially outward from a position immediately after the fitting part 14 on the outer peripheral surface of the terminal accommodating part 11.

端子収容部１１は、横長な（高さ寸法よりも幅寸法の方が大きい）略ブロック状をなすとともに、後方から雌端子金が挿入可能とされるキャビティ１５を備えている。キャビティ１５は、端子収容部１１を前後に貫通する形態とされるとともに端子収容部１１において幅方向（横方向）に３室並んで配置されている。キャビティ１５の内周面のうち下面側には、挿入された雌端子金具を抜け止め状態に保持するためのランス１６が設けられている。ランス１６は、片持ち状をなし上下に弾性変形可能とされる。また、キャビティ１５のうち前半部分は雌端子金具の外形に合わせて断面四角形状とされるものの、後半部分は電線の周りに装着された防水ゴム栓（図示せず）の外形に合わせて断面円形状とされる。これにより、雌端子金具を周方向について位置決めできるとともに、防水ゴム栓をキャビティ１５の内周面に良好に密着させることができる。 The terminal accommodating portion 11 is formed in a substantially block shape that is horizontally long (the width dimension is larger than the height dimension), and includes a cavity 15 in which a female terminal gold can be inserted from the rear. The cavity 15 is configured to penetrate the terminal accommodating portion 11 in the front-rear direction, and is arranged side by side with three chambers in the width direction (lateral direction) in the terminal accommodating portion 11. A lance 16 is provided on the lower surface side of the inner peripheral surface of the cavity 15 to hold the inserted female terminal fitting in a retaining state. The lance 16 is cantilevered and can be elastically deformed up and down. In addition, the front half of the cavity 15 has a square cross section in accordance with the outer shape of the female terminal fitting, but the rear half has a circular cross section in accordance with the outer shape of a waterproof rubber plug (not shown) attached around the wire. Shaped. Accordingly, the female terminal fitting can be positioned in the circumferential direction, and the waterproof rubber stopper can be satisfactorily adhered to the inner peripheral surface of the cavity 15.

端子収容部１１の前端面は、保護筒部１２の前端面と略面一状をなしており、共に雌ハウジング１０の前端面（嵌合面）を構成している。この端子収容部１１の前端面には、雄ハウジング３０側のこじり防止片４２を受け入れ可能な受け入れ溝部１７が前方へ開口して設けられている。受け入れ溝部１７は、幅方向に並んだ各キャビティ１５同士を仕切る仕切り壁にそれぞれ形成されている。受け入れ溝部１７は、正面から見て縦長な矩形状をなし、その深さ寸法は、こじり防止片４２の長さ寸法よりも大きく、仕切り壁の長さ寸法よりは小さく設定されている。 The front end surface of the terminal accommodating portion 11 is substantially flush with the front end surface of the protective cylinder portion 12, and both constitute the front end surface (fitting surface) of the female housing 10. On the front end surface of the terminal accommodating portion 11, a receiving groove portion 17 capable of receiving the kink preventing piece 42 on the male housing 30 side is provided to open forward. The receiving groove part 17 is formed in the partition wall which partitions off each cavity 15 located in a line in the width direction. The receiving groove portion 17 has a vertically long rectangular shape when viewed from the front, and the depth dimension thereof is set larger than the length dimension of the kink preventing piece 42 and smaller than the length dimension of the partition wall.

端子収容部１１のうち保護筒部１２に囲まれた嵌合部１４の外周面（筒状部３２との対向周面）には、両ハウジング１０，３０間をシールするためのシールリング１８が装着されるとともに、両ハウジング１０，３０が径方向にがたつくのを規制するためのがたつき規制部１９が設けられている。 A seal ring 18 for sealing between the housings 10 and 30 is provided on the outer peripheral surface of the fitting portion 14 surrounded by the protective cylindrical portion 12 in the terminal accommodating portion 11 (the peripheral surface facing the cylindrical portion 32). At the same time as being mounted, a rattling restricting portion 19 is provided for restricting the two housings 10 and 30 from rattling in the radial direction.

シールリング１８は、弾縮変形可能なゴム製とされ、図３〜図５に示すように、嵌合部１４の周りを取り囲む環状のシール本体２０と、シール本体２０の両側部における後端部から側方へ張り出す一対の耳部２１と、各耳部２１の後端面から後方へ延出する抜け止め突部２２とから構成される。抜け止め突部２２は、各耳部２１における上下に離間した位置に一対ずつ設置されている。 The seal ring 18 is made of an elastically deformable rubber. As shown in FIGS. 3 to 5, as shown in FIGS. 3 to 5, an annular seal body 20 that surrounds the fitting portion 14, and rear end portions on both sides of the seal body 20. A pair of ears 21 projecting laterally from the side, and a retaining projection 22 extending rearward from the rear end surface of each ear 21. A pair of retaining protrusions 22 are installed at positions spaced apart from each other in each ear 21.

シールリング１８は、雌ハウジング１０に装着されると、図６〜図８に示すように、シール本体２０が嵌合部１４の外周面における後端部に嵌着されるとともに、両耳部２１が連結部１３の前面に形成された耳部受け凹部２３内にそれぞれ嵌め込まれ、さらに各抜け止め突部２２が耳部受け凹部２３の底面に貫通形成された円形状をなす各抜け止め孔部２４に貫通状態で圧入される。各抜け止め突部２２に形成された拡径部が各抜け止め孔部２４の孔縁後部に後側から引っ掛かることで、シールリング１８の抜け止めが図られる。また、両ハウジング１０，３０の嵌合時には、シールリング１８のシール本体２０が嵌合部１４と筒状部３２との間で圧縮され、両者１４，３２の対向周面に密着されることで両ハウジング１０，３０間をシールできるようになっている（図９及び図１０）。 When the seal ring 18 is attached to the female housing 10, as shown in FIGS. 6 to 8, the seal main body 20 is fitted to the rear end portion of the outer peripheral surface of the fitting portion 14, and the both ear portions 21. Are respectively fitted in ear receiving recesses 23 formed on the front surface of the connecting portion 13, and each retaining hole 22 is formed in a circular shape with each retaining protrusion 22 penetratingly formed on the bottom surface of the ear receiving recess 23. 24 is press-fitted in a penetrating state. The diameter-enlarged portion formed in each retaining protrusion 22 is hooked from the rear side to the rear edge of each retaining hole 24, so that the seal ring 18 is retained. Further, when the housings 10 and 30 are fitted together, the seal body 20 of the seal ring 18 is compressed between the fitting portion 14 and the cylindrical portion 32, and is brought into close contact with the opposing peripheral surfaces of the both 14 and 32. The housings 10 and 30 can be sealed (FIGS. 9 and 10).

嵌合部１４のうちシールリング１８が装着される後端部には、図２，図４及び図５に示すように、その前側部分よりも径方向外側に張り出す張出部２５が設けられている。そして、この張出部２５の外周面、つまりシールリング１８の装着面には、シールリング１８のシール性能を良好なものとするための曲面２６が形成されている。曲面２６は、張出部２５の外周面のうち横長な上面及び下面にそれぞれ形成され、共に円弧状（Ｒ形状）とされる。この曲面２６が形成されることで、張出部２５は、幅方向中央部が最も高さ寸法が大きく、そこから両端に行くに連れて次第に高さ寸法が小さくなる形状となっている。また、張出部２５における両側面は、上下方向に沿ってほぼ真っ直ぐに形成されているものの、上記両曲面２６との接続箇所（張出部２５の角位置）においては曲面２６よりも曲率が小さなＲ形状が形成されている。なお、張出部２５のうち上部は、他の部分（両側部及び下部）よりも張り出し量が大きくなっているので、ひけを防止するために前方へ開口する肉抜き部２５ａが幅方向に並んで３箇所に形成されている。 As shown in FIGS. 2, 4, and 5, a protruding portion 25 is provided at the rear end portion of the fitting portion 14 where the seal ring 18 is mounted, and projects outward in the radial direction from the front portion. ing. A curved surface 26 for improving the sealing performance of the seal ring 18 is formed on the outer peripheral surface of the projecting portion 25, that is, the mounting surface of the seal ring 18. The curved surface 26 is formed on each of the horizontally long upper surface and the lower surface of the outer peripheral surface of the overhang portion 25, and is both arcuate (R-shaped). By forming the curved surface 26, the overhanging portion 25 has a shape in which the height dimension is the largest at the center in the width direction, and the height dimension gradually decreases toward the both ends from there. In addition, although both side surfaces of the overhanging portion 25 are formed substantially straight along the vertical direction, the curvature of the connecting portion (the angular position of the overhanging portion 25) with both the curved surfaces 26 is greater than that of the curved surface 26. A small R shape is formed. Note that the upper portion of the overhang portion 25 has a larger overhang amount than the other portions (both side portions and the lower portion), so that the lightening portions 25a that open forward are arranged in the width direction to prevent sink marks. It is formed in three places.

一方、がたつき規制部１９は、嵌合部１４のうち上記張出部２５よりも前側の部分である前部１４ａの外周面に設置されており、その設置面である上記外周面には平坦面２７が形成されている。平坦面２７は、嵌合部１４の前部１４ａにおける外周面のほぼ全域（角部分を除く）に形成されており、上面及び下面については幅方向に沿ってほぼ真っ直ぐに（フラットな）、両側面については上下方向に沿ってほぼ真っ直ぐに形成してなる。 On the other hand, the rattling restricting portion 19 is installed on the outer peripheral surface of the front portion 14a which is a portion of the fitting portion 14 on the front side of the overhang portion 25, and the outer peripheral surface which is the installation surface is provided on the outer peripheral surface. A flat surface 27 is formed. The flat surface 27 is formed in almost the entire outer surface (excluding the corner portion) of the front portion 14a of the fitting portion 14, and the upper surface and the lower surface are substantially straight (flat) along the width direction on both sides. The surface is formed almost straight along the vertical direction.

がたつき規制部１９は、平坦面２７において周方向について部分的に（間欠的に）突出する形態とされており、平坦面２７を構成する上面、下面、及び両側面にそれぞれ２つずつ、計８つ設置されている。詳しくは、平坦面２７のうち上面及び下面においては、がたつき規制部１９は、幅方向について両受け入れ溝部１７と一致する位置にそれぞれ配置されている。一方、平坦面２７のうち両側面においては、がたつき規制部１９は、上下に所定高さ離間した位置に配置されている。 The rattling restricting portion 19 is configured to protrude partially (intermittently) in the circumferential direction on the flat surface 27, and two each on the upper surface, the lower surface, and both side surfaces constituting the flat surface 27, A total of eight are installed. Specifically, on the upper surface and the lower surface of the flat surface 27, the rattling restricting portion 19 is disposed at a position that coincides with both the receiving groove portions 17 in the width direction. On the other hand, on both side surfaces of the flat surface 27, the rattling restricting portion 19 is disposed at a position spaced vertically by a predetermined height.

がたつき規制部１９は、平坦面２７から径方向外側へ突出するとともに前後方向に沿って延びるリブ状（突条状）をなしており、前後方向について平坦面２７（嵌合部１４の前部１４ａ）の全長にわたる範囲に形成されている。がたつき規制部１９の後端部は、張出部２５の前端面に連結されている。がたつき規制部１９は、突出端にかけて先細り状に形成されており、突出端に頂点を有する断面三角形状をなしている。がたつき規制部１９の突出寸法は、前部１４ａの外周面からの張出部２５の最小張出寸法（張出部２５における両側部の張出寸法）よりも小さくなっているので、がたつき規制部１９の突出端は、張出部２５の外周面よりも径方向内側に引っ込んだ位置に配されている。これにより、シールリング１８を装着するときにシールリング１８ががたつき規制部１９に干渉することが回避されるようになっている。両ハウジング１０，３０が嵌合されると、がたつき規制部１９の突出端が筒状部３２（内筒部３６）に当接されることで、嵌合部１４と筒状部３２との対向周面間に生じる環状の隙間ががたつき規制部１９によって周方向について部分的に埋められ、もって両ハウジング１０，３０が径方向にがたつくのが規制されるようになっている（図１１）。 The rattling restricting portion 19 has a rib shape (protruding shape) that protrudes radially outward from the flat surface 27 and extends in the front-rear direction, and the flat surface 27 (in front of the fitting portion 14) in the front-rear direction. It is formed over the entire length of the part 14a). The rear end portion of the rattling regulating portion 19 is connected to the front end surface of the overhang portion 25. The rattling restricting portion 19 is formed in a tapered shape over the protruding end, and has a triangular cross section having a vertex at the protruding end. Since the protrusion dimension of the rattling restricting part 19 is smaller than the minimum overhanging dimension of the overhanging part 25 from the outer peripheral surface of the front part 14a (the overhanging dimension on both sides of the overhanging part 25), The protruding end of the rattling restricting portion 19 is disposed at a position retracted radially inward from the outer peripheral surface of the overhang portion 25. This prevents the seal ring 18 from interfering with the rattling regulating portion 19 when the seal ring 18 is mounted. When both the housings 10 and 30 are fitted, the protruding end of the rattling restricting portion 19 is brought into contact with the cylindrical portion 32 (inner cylindrical portion 36), so that the fitting portion 14 and the cylindrical portion 32 An annular gap generated between the opposing peripheral surfaces of the housing 10 is partially filled in the circumferential direction by the rattling restricting portion 19, thereby restricting the two housings 10, 30 from rattling in the radial direction (see FIG. 11).

一方、保護筒部１２は、図２，図４及び図５に示すように、前方へ開口する横長な略角筒状をなしており、端子収容部１１における嵌合部１４との間に、雄ハウジング３０の筒状部３２を受け入れる分の間隔を空けた位置に配されている。この保護筒部１２によって、嵌合前の状態において、シールリング１８のシール本体２０の保護を図ることができる。 On the other hand, as shown in FIGS. 2, 4, and 5, the protective cylinder portion 12 has a horizontally long and substantially rectangular tube shape that opens forward, and between the fitting portion 14 in the terminal accommodating portion 11, The male housing 30 is disposed at a position spaced apart to receive the cylindrical portion 32. The protection cylinder portion 12 can protect the seal body 20 of the seal ring 18 in a state before fitting.

保護筒部１２の上部には、両ハウジング１０，３０を嵌合状態に保持するためのロックアーム２８が設けられている。保護筒部１２の両側部及び下部には、部分的に外側に膨出する膨出部がそれぞれ設けられ、その内側に雄ハウジング３０のガイドリブ４０を受け入れるリブ受け入れ溝部２９が設けられている。リブ受け入れ溝部２９の内周面には、ガイドリブ４０との間の隙間を埋めるがたつき規制突起２９ａが３つずつ設けられている。またがたつき規制突起２９ａは、保護筒部１２の上部の内周面におけるロックアーム２８の両側方位置にも一対ずつ設置されている。 A lock arm 28 for holding both housings 10 and 30 in a fitted state is provided on the upper portion of the protective cylinder portion 12. A bulging portion that bulges partially outward is provided on both sides and the lower portion of the protective cylinder portion 12, and a rib receiving groove portion 29 that receives the guide rib 40 of the male housing 30 is provided on the inner side. On the inner peripheral surface of the rib receiving groove 29, there are provided three rattling restricting projections 29a each filling a gap with the guide rib 40. A pair of rattling regulating protrusions 29 a are also provided at a position on both sides of the lock arm 28 on the inner peripheral surface of the upper portion of the protective cylinder portion 12.

続いて、雄ハウジング３０について説明する。雄ハウジング３０は、合成樹脂製とされ、図１，図７及び図８に示すように、電線の端末に接続された雄端子金具（電線共々図示せず）が収容されるハウジング本体３１と、ハウジング本体３１から前方へ突出する筒状部３２とを備え、ハウジング本体３１の下面には雄ハウジング３０をブラケットに取り付けるためのブラケット取付部３３が設けられている。 Next, the male housing 30 will be described. The male housing 30 is made of synthetic resin, and as shown in FIGS. 1, 7 and 8, a housing main body 31 in which a male terminal fitting (not shown) is connected to the end of the electric wire, A cylindrical portion 32 protruding forward from the housing body 31 is provided, and a bracket attachment portion 33 for attaching the male housing 30 to the bracket is provided on the lower surface of the housing body 31.

ハウジング本体３１は、横長な略ブロック状をなすとともに、後方から雄端子金具が挿入可能とされるキャビティ３４を備えている。キャビティ３４は、ハウジング本体３１を前後に貫通する形態とされるとともにハウジング本体３１において幅方向（横方向）に３室並んで配置されている。キャビティ３４の内周面の下面には、雄端子金具を抜け止め状態に保持するためのランス３５が設けられている。なお、これらキャビティ３４及びランス３５の構造や機能は、雌ハウジング１０側のキャビティ１５及びランス１６と同様であるため詳しい説明は省略する。また、雌側と同様にキャビティ３４の内周面後部には、電線に嵌着された防水ゴム栓が密着される。 The housing main body 31 is formed in a horizontally long substantially block shape and includes a cavity 34 into which a male terminal fitting can be inserted from the rear. The cavity 34 is configured to penetrate the housing main body 31 in the front-rear direction, and is arranged in three chambers in the housing main body 31 in the width direction (lateral direction). A lance 35 is provided on the lower surface of the inner peripheral surface of the cavity 34 to hold the male terminal fitting in a state of preventing the male terminal fitting from coming off. The structures and functions of the cavity 34 and the lance 35 are the same as those of the cavity 15 and the lance 16 on the female housing 10 side, and thus detailed description thereof is omitted. Further, similarly to the female side, a waterproof rubber stopper fitted to the electric wire is in close contact with the rear portion of the inner peripheral surface of the cavity 34.

筒状部３２は、ハウジング本体３１における雌ハウジング１０との嵌合面である前端面３１ａから前方へ突出して形成されており、前方へ開口する横長な略角筒状をなしている。筒状部３２は、雄ハウジング３０が雌ハウジング１０に嵌合されたとき、保護筒部１２と嵌合部１４との対向周面間の空間に入り込むようになっており、言い換えると筒状部３２の径方向外側に雌ハウジング１０側の保護筒部１２が外嵌されるとともに、筒状部３２の径方向内側に嵌合部１４が内嵌されるようになっている。なお、ハウジング本体３１の前端面３１ａがハウジング本体３１と筒状部３２との境界位置となっている。 The cylindrical portion 32 is formed to project forward from a front end surface 31a that is a fitting surface with the female housing 10 in the housing main body 31, and has a horizontally long substantially rectangular tube shape that opens forward. When the male housing 30 is fitted into the female housing 10, the cylindrical portion 32 enters the space between the opposed peripheral surfaces of the protective cylindrical portion 12 and the fitting portion 14, in other words, the cylindrical portion. The protective cylinder portion 12 on the female housing 10 side is fitted on the radially outer side of 32, and the fitting portion 14 is fitted on the radially inner side of the cylindrical portion 32. The front end surface 31 a of the housing body 31 is a boundary position between the housing body 31 and the cylindrical portion 32.

そして、この筒状部３２は、ハウジング本体３１の前端面３１ａから突き出した雄端子金具のタブを取り囲む内筒部３６と、内筒部３６の径方向外側に所定の間隔を空けた位置にて内筒部３６を取り囲む外筒部３７とに分けて形成され、全体として二重筒構造となっている。詳しくは、筒状部３２は、前部よりも後部の方が段付き状に厚み寸法が大きくなっており、その後部に前方へ開口する環状の溝部３８が形成されることで、比較的小径で且つ短尺な内筒部３６と、比較的大径で且つ長尺な外筒部３７とに径方向に分離して形成されている。 And this cylindrical part 32 is in the inner cylinder part 36 which surrounds the tab of the male terminal metal fitting protruded from the front end surface 31a of the housing main body 31, and the position which left the predetermined space | interval in the radial direction outer side of the inner cylinder part 36. It is divided into an outer cylinder part 37 surrounding the inner cylinder part 36 and has a double cylinder structure as a whole. Specifically, the tubular portion 32 has a stepped shape at the rear portion rather than the front portion and has a larger thickness dimension, and an annular groove portion 38 that opens forward is formed at the rear portion, so that a relatively small diameter is formed. In addition, a short inner cylinder part 36 and a relatively large diameter and long outer cylinder part 37 are separated in the radial direction.

内筒部３６には、雌ハウジング１０側の嵌合部１４の前部１４ａが内嵌可能とされている。内筒部３６の長さ寸法は、嵌合部１４の前部１４ａの長さ寸法（がたつき規制部１９の長さ寸法）よりも短く設定され、且つハウジング本体３１の前端面３１ａからの雄端子金具のタブの突出寸法よりも長く設定されている。内筒部３６は、嵌合部１４の前部１４ａの外形（平坦面２７を含む外周面）に沿った形状とされている。そして、内筒部３６の内径寸法（幅寸法及び高さ寸法）は、嵌合部１４の前部１４ａの外径寸法（幅寸法及び高さ寸法）よりも少し大きく設定されている。この内筒部３６の内径寸法と、嵌合部１４の前部１４ａの外径寸法との差は、嵌合部１４の前部１４ａの外周面からのがたつき規制部１９の突出寸法よりも小さくなっている。従って、内筒部３６内に嵌合部１４の前部１４ａが嵌合されると、各がたつき規制部１９が僅かに圧潰されるようになっており、それによって内筒部３６と嵌合部１４とが径方向にがたつくのが規制可能とされる。また、内筒部３６の内径寸法は、張出部２５の外径寸法よりは小さくなっている。 A front portion 14 a of the fitting portion 14 on the female housing 10 side can be fitted into the inner cylinder portion 36. The length dimension of the inner cylinder part 36 is set to be shorter than the length dimension of the front part 14 a of the fitting part 14 (length dimension of the rattling restriction part 19), and from the front end face 31 a of the housing body 31. It is set longer than the protruding dimension of the tab of the male terminal fitting. The inner cylinder portion 36 has a shape along the outer shape (the outer peripheral surface including the flat surface 27) of the front portion 14 a of the fitting portion 14. Further, the inner diameter dimension (width dimension and height dimension) of the inner cylinder part 36 is set to be slightly larger than the outer diameter dimension (width dimension and height dimension) of the front part 14a of the fitting part 14. The difference between the inner diameter dimension of the inner cylinder part 36 and the outer diameter dimension of the front part 14a of the fitting part 14 is based on the protruding dimension of the backlash restricting part 19 from the outer peripheral surface of the front part 14a of the fitting part 14. Is also getting smaller. Therefore, when the front part 14a of the fitting part 14 is fitted into the inner cylinder part 36, each rattling regulating part 19 is slightly crushed, thereby fitting with the inner cylinder part 36. It is possible to restrict the joint portion 14 from rattling in the radial direction. In addition, the inner diameter of the inner cylinder portion 36 is smaller than the outer diameter of the overhang portion 25.

一方、外筒部３７には、嵌合部１４の後部、つまり張出部２５が内嵌可能とされている。外筒部３７の長さ寸法は、内筒部３６の長さ寸法よりも長く設定され、その差は、張出部２５の長さ寸法（シール本体２０の長さ寸法）よりも大きく設定されている。外筒部３７は、張出部２５の外形（曲面２６を含む外周面）に沿った形状とされている。そして、外筒部３７の内径寸法は、内筒部３６や張出部２５の外径寸法よりも大きいものの、シールリング１８におけるシール本体２０の外径寸法よりは小さく設定されている。従って、外筒部３７内に張出部２５が嵌合されると、外筒部３７の前端部によってシール本体２０が圧縮され、それによって両ハウジング１０，３０間のシールがとられるようになっている。 On the other hand, the rear portion of the fitting portion 14, that is, the overhang portion 25 can be fitted into the outer cylinder portion 37. The length dimension of the outer cylinder part 37 is set longer than the length dimension of the inner cylinder part 36, and the difference is set larger than the length dimension of the overhang part 25 (length dimension of the seal body 20). ing. The outer cylinder portion 37 has a shape along the outer shape (the outer peripheral surface including the curved surface 26) of the overhang portion 25. The inner diameter dimension of the outer cylinder portion 37 is set to be smaller than the outer diameter dimension of the seal body 20 in the seal ring 18, although it is larger than the outer diameter dimensions of the inner cylinder portion 36 and the overhang portion 25. Therefore, when the overhanging portion 25 is fitted into the outer cylinder portion 37, the seal body 20 is compressed by the front end portion of the outer cylinder portion 37, whereby the seal between the housings 10 and 30 is taken. ing.

また、外筒部３７の外周面のうち上面の幅方向中央には、ロックアーム２８が係止可能なロック突部３９が設けられている。外筒部３７の外周面の両側面及び下面には、雌ハウジング１０側のリブ受け入れ溝部２９内に進入可能なガイドリブ４０がそれぞれ設けられている。また、外筒部３７の外周面の上面におけるロック突部３９の両側方位置にも同様のガイドリブ４０が一対設けられている。 In addition, a lock protrusion 39 that can lock the lock arm 28 is provided at the center in the width direction of the upper surface of the outer peripheral surface of the outer cylinder portion 37. Guide ribs 40 that can enter the rib receiving groove 29 on the female housing 10 side are respectively provided on both side surfaces and the lower surface of the outer peripheral surface of the outer cylindrical portion 37. A pair of similar guide ribs 40 are also provided at positions on both sides of the lock projection 39 on the upper surface of the outer peripheral surface of the outer cylinder portion 37.

内筒部３６と外筒部３７との対向周面間に形成されている溝部３８は、筒状部３２を越えてハウジング本体３１にまで至る深さに形成されている。詳しくは、溝部３８は、筒状部３２からハウジング本体３１の前部にまで延長されており、これによりハウジング本体３１の前部が筒状部３２と同様の二重筒構造となっている。ハウジング本体３１の前部は、内筒部３６に連結された各キャビティ３４の周壁と、外筒部３７に連結された外周壁とに溝部３８の後部（延長部分）によって分離されている。ハウジング本体３１の前端位置からの溝部３８の深さ寸法は、筒部の長さ寸法よりも大きくなっている。なお、雄ハウジング３０の後面には、後方へ開口する肉抜き孔４１が複数形成されているが（図７及び図８）、溝部３８の深さ及び形状は、各肉抜き孔４１や各キャビティ３４との間の雄ハウジング３０の肉厚ができるだけ均一になるように設定されている。 The groove portion 38 formed between the opposed peripheral surfaces of the inner cylinder portion 36 and the outer cylinder portion 37 is formed to a depth reaching the housing body 31 beyond the cylindrical portion 32. Specifically, the groove portion 38 extends from the cylindrical portion 32 to the front portion of the housing main body 31, whereby the front portion of the housing main body 31 has a double cylindrical structure similar to the cylindrical portion 32. The front part of the housing body 31 is separated by a rear part (extension part) of the groove part 38 into a peripheral wall of each cavity 34 connected to the inner cylinder part 36 and an outer peripheral wall connected to the outer cylinder part 37. The depth dimension of the groove part 38 from the front end position of the housing main body 31 is larger than the length dimension of the cylinder part. The rear surface of the male housing 30 is formed with a plurality of lightening holes 41 opening rearward (FIGS. 7 and 8). The depth and shape of the groove portions 38 are different from each other. The thickness of the male housing 30 with respect to 34 is set to be as uniform as possible.

また、ハウジング本体３１の前端面３１ａからは、雌ハウジング１０側の受け入れ溝部１７内に挿入可能なこじり防止片４２が一対前方へ突き出して設けられている。こじり防止片４２は、前方から見て縦長な板状に形成されており、各キャビティ３４の間の位置に設置されている。こじり防止片４２は、内筒部３６及び外筒部３７によって周りが取り囲まれており、その前端位置が内筒部３６の前端位置よりも前側で且つ外筒部３７の前端位置よりも後側に設定されている。つまり、こじり防止片４２の長さ寸法は、内筒部３６よりも長いが外筒部３７よりは短く設定されている。これにより、雌ハウジング１０が正規の嵌合姿勢よりも嵌合面を傾けた姿勢で嵌合されるのが規制され、内筒部３６及び雄端子金具の保護を図ることができる。 Further, a pair of anti-twisting pieces 42 that can be inserted into the receiving groove portion 17 on the female housing 10 side are provided so as to protrude forward from the front end surface 31 a of the housing body 31. The twist prevention pieces 42 are formed in a vertically long plate shape as viewed from the front, and are installed at positions between the cavities 34. The twist-preventing piece 42 is surrounded by the inner cylinder portion 36 and the outer cylinder portion 37, and the front end position thereof is in front of the front end position of the inner cylinder portion 36 and the rear side of the front end position of the outer cylinder portion 37. Is set to That is, the length dimension of the kink preventing piece 42 is set longer than the inner cylinder part 36 but shorter than the outer cylinder part 37. Accordingly, the female housing 10 is restricted from being fitted in a posture in which the fitting surface is inclined with respect to the normal fitting posture, so that the inner cylindrical portion 36 and the male terminal fitting can be protected.

内筒部３６と外筒部３７との対向周面は、補強部４３によって周方向について部分的に（間欠的に）連結されている。詳しくは、補強部４３は、内筒部３６の外周面と外筒部３７の内周面とを繋ぐよう径方向及び前後方向に沿って延びる板状をなしている。補強部４３は、内筒部３６及び外筒部３７の上部と下部とに２つずつ、両側部に１つずつ、計６箇所に設置されている。これら補強部４３のうち、内筒部３６及び外筒部３７の上部と下部とを繋ぐものは、幅方向についての設置位置が、こじり防止片４２や雌ハウジング１０側の上下の各がたつき規制部１９と一致している。各補強部４３の厚み寸法は、内筒部３６よりは大きいものの、外筒部３７よりは小さくなっている。 Opposing peripheral surfaces of the inner cylindrical portion 36 and the outer cylindrical portion 37 are partially (intermittently) connected in the circumferential direction by the reinforcing portion 43. Specifically, the reinforcing portion 43 has a plate shape extending along the radial direction and the front-rear direction so as to connect the outer peripheral surface of the inner cylindrical portion 36 and the inner peripheral surface of the outer cylindrical portion 37. The reinforcing portions 43 are installed at six locations, two at the upper and lower portions of the inner cylindrical portion 36 and the outer cylindrical portion 37, and one at each side portion. Among these reinforcing portions 43, those connecting the upper and lower portions of the inner cylinder portion 36 and the outer cylinder portion 37 are arranged in the width direction so that the upper and lower rattlings on the side of the anti-twisting piece 42 and the female housing 10 are not stable. This is consistent with the restriction unit 19. Although the thickness dimension of each reinforcement part 43 is larger than the inner cylinder part 36, it is smaller than the outer cylinder part 37. FIG.

補強部４３は、溝部３８と同じ長さ範囲にわたって形成されており、雄ハウジング３０のうち溝部３８によって分離された部分同士を全長にわたって連結している。詳しくは、補強部４３は、内筒部３６が全長さ範囲にわたって外筒部３７と連結されるとともに、ハウジング本体３１のうち溝部３８によって分離された各キャビティ３４の周壁と外周壁とが全長にわたって連結されている。なお、外筒部３７のうち内筒部３６よりも前方へ突き出す部分（シールリング１８に当接される前端部を含む）は、内筒部３６に対して連結されることがない。 The reinforcement part 43 is formed over the same length range as the groove part 38, and has connected the part isolate | separated by the groove part 38 among the male housing 30 over the full length. Specifically, in the reinforcing portion 43, the inner cylindrical portion 36 is connected to the outer cylindrical portion 37 over the entire length range, and the peripheral wall and the outer peripheral wall of each cavity 34 separated by the groove portion 38 in the housing main body 31 are extended over the entire length. It is connected. Note that a portion of the outer cylinder portion 37 that protrudes forward from the inner cylinder portion 36 (including a front end portion that is in contact with the seal ring 18) is not connected to the inner cylinder portion 36.

本実施形態は以上のような構造であり、続いてその作用を説明する。雄ハウジング３０の各キャビティ３４内にそれぞれ雄端子金具を挿入すると、ランス３５によってその抜け止めが図られるとともに、内筒部３６によって雄端子金具のタブが取り囲まれて保護が図られる。一方、雌ハウジング１０の各キャビティ１５内にそれぞれ雌端子金具を挿入するとランス１６により抜け止めされ、シールリング１８を保護筒部１２内に入れて端子収容部１１の嵌合部１４に装着する。シールリング１８は、図６に示すように、嵌合部１４の後端に設けられた張出部２５の外周面に嵌着されるのであるが、この張出部２５の外周面には曲面２６が形成されているので、その密着性が良好なものとなっている。この状態（嵌合前の状態）では、シールリング１８は、保護筒部１２によって取り囲まれて保護される。また、シールリング１８は、図８に示すように、両耳部２１が両耳部受け凹部２３内に嵌め込まれるとともに各抜け止め突部２２が各抜け止め孔部２４を貫通し、その拡径部が孔縁後部に係止することで、抜け止め状態に保持される。 This embodiment has the structure as described above, and the operation thereof will be described subsequently. When the male terminal fitting is inserted into each cavity 34 of the male housing 30, the lance 35 prevents the male terminal fitting from coming off, and the inner cylinder portion 36 surrounds the tab of the male terminal fitting for protection. On the other hand, when female terminal fittings are inserted into the respective cavities 15 of the female housing 10, they are prevented from coming off by the lance 16, and the seal ring 18 is inserted into the protective cylinder portion 12 and attached to the fitting portion 14 of the terminal accommodating portion 11. As shown in FIG. 6, the seal ring 18 is fitted on the outer peripheral surface of the overhang portion 25 provided at the rear end of the fitting portion 14. Since 26 is formed, the adhesiveness is good. In this state (the state before fitting), the seal ring 18 is surrounded and protected by the protective cylinder portion 12. Further, as shown in FIG. 8, the seal ring 18 has both ears 21 fitted in the both ear receiving recesses 23 and each retaining projection 22 penetrates each retaining hole 24, and its diameter increases. The portion is retained in the hole edge rear portion, so that it is held in a retaining state.

続いて、両ハウジング１０，３０を嵌合する作業を行う。図７及び図８に示すように、両ハウジング１０，３０を互いの嵌合面が平行になるような姿勢（正規な姿勢）としつつ、雄ハウジング３０の筒状部３２を雌ハウジング１０の保護筒部１２と嵌合部１４との間の空間に前方から嵌め込む。ここで、仮に両ハウジング１０，３０の嵌合面が相対的に傾いた姿勢だった場合には、両こじり防止片４２が両受け入れ溝部１７と整合せず、嵌合部１４の前端面に突き当たったり、外筒部３７が保護筒部１２に干渉することで、不正な（こじり）姿勢での嵌合動作が規制される。このとき、こじり防止片４２が内筒部３６よりも前方へ突出しているので、嵌合部１４が内筒部３６や雄端子金具のタブに干渉するのが防がれるようになっている。 Then, the operation | work which fits both the housings 10 and 30 is performed. As shown in FIGS. 7 and 8, the cylindrical portion 32 of the male housing 30 is protected from the female housing 10 while the housings 10 and 30 are in a posture (normal posture) in which the fitting surfaces are parallel to each other. It fits into the space between the cylinder part 12 and the fitting part 14 from the front. Here, if the fitting surfaces of both the housings 10 and 30 are in a relatively inclined posture, the two twist prevention pieces 42 do not align with the receiving groove portions 17 and abut against the front end surface of the fitting portion 14. Or, the outer cylinder part 37 interferes with the protective cylinder part 12, so that the fitting operation in an unauthorized (koji) posture is restricted. At this time, since the kink preventing piece 42 protrudes forward from the inner cylinder portion 36, the fitting portion 14 is prevented from interfering with the inner cylinder portion 36 and the tab of the male terminal fitting.

両ハウジング１０，３０が正規な姿勢で嵌合されると、両こじり防止片４２が対応する両受け入れ溝部１７内に差し込まれるとともに、各ガイドリブ４０が各リブ受け入れ溝部２９内に進入されることで、嵌合動作が案内される。嵌合が進行すると、ロックアーム２８がロック突部３９に乗り上げることで一旦弾性変形するとともに、嵌合部１４の前部１４ａが内筒部３６内に進入する。このとき、嵌合部１４の前部１４ａの平坦面２７に形成された各がたつき規制部１９が内筒部３６の内周面に摺接されるとともに、各がたつき規制部１９の突出端部が前端側から徐々に圧潰されていく。ここで、各がたつき規制部１９は、突出端にかけて先細り状に形成されているので、各がたつき規制部１９を圧潰するのに伴って増加する嵌合抵抗は僅かなものとなっている。さらに嵌合が進行すると、外筒部３７の前端部の内周面がシールリング１８のシール本体２０の外周面に摺接されるとともに、シール本体２０が径方向について圧縮されていく。 When the two housings 10 and 30 are fitted in a normal posture, both the twist preventing pieces 42 are inserted into the corresponding receiving groove portions 17 and the guide ribs 40 are inserted into the rib receiving groove portions 29. The fitting operation is guided. As the fitting proceeds, the lock arm 28 rides on the lock projection 39 to be elastically deformed once, and the front portion 14a of the fitting portion 14 enters the inner cylinder portion 36. At this time, each rattling restricting portion 19 formed on the flat surface 27 of the front portion 14a of the fitting portion 14 is in sliding contact with the inner peripheral surface of the inner cylinder portion 36, and each rattling restricting portion 19 The protruding end portion is gradually crushed from the front end side. Here, each rattling restricting portion 19 is formed in a tapered shape toward the protruding end, so that the fitting resistance that increases as each rattling restricting portion 19 is crushed becomes slight. Yes. When the fitting further proceeds, the inner peripheral surface of the front end portion of the outer cylinder portion 37 is brought into sliding contact with the outer peripheral surface of the seal main body 20 of the seal ring 18 and the seal main body 20 is compressed in the radial direction.

両ハウジング１０，３０が正規深さまで嵌合されると、図９及び図１０に示すように、雄雌両端子金具が互いに導通接触されるとともに、ロックアーム２８がロック突部３９を乗り越えて復元し、ロック突部３９の後面に係止することで、両ハウジング１０，３０が嵌合状態から離脱不能に保持される。 When the two housings 10 and 30 are fitted to the normal depth, the male and female terminal fittings are brought into conductive contact with each other and the lock arm 28 gets over the lock projection 39 and is restored as shown in FIGS. By engaging with the rear surface of the lock protrusion 39, both the housings 10 and 30 are held so as not to be detached from the fitted state.

この嵌合状態では、図１１に示すように、嵌合部１４の前部１４ａにおいて周方向について間欠的に設置された各がたつき規制部１９が、内筒部３６の内周面の全長にわたって密着することで、両ハウジング１０，３０の径方向についてのがたつきが有効に規制される。しかも、各がたつき規制部１９は、雌端子金具のうち雄端子金具のタブとの接続部位である前端部と前後方向について重なる位置にあり、且つ径方向についても雌端子金具の周りを取り囲む嵌合部１４の前部１４ａのすぐ外側に位置しているから、外部からの振動が雄雌両端子金具の接続状態に影響するのを確実に防ぐことができる。さらには、各がたつき規制部１９が各補強部４３と周方向について一致する配置となっているから、内筒部３６のうち各がたつき規制部１９に密着する部分が効果的に補強されており、がたつき規制機能が極めて高くなっている。 In this fitted state, as shown in FIG. 11, each backlash restricting portion 19 that is intermittently installed in the circumferential direction in the front portion 14 a of the fitting portion 14 has a total length of the inner circumferential surface of the inner cylinder portion 36. By closely contacting, the shakiness in the radial direction of both housings 10 and 30 is effectively regulated. In addition, each rattling restricting portion 19 is in a position overlapping with the front end portion of the female terminal fitting, which is a connection portion with the tab of the male terminal fitting, in the front-rear direction, and also surrounds the female terminal fitting in the radial direction. Since it is located just outside the front part 14a of the fitting part 14, it can prevent reliably that the vibration from the outside affects the connection state of both male and female terminal metal fittings. Furthermore, since each rattling restricting portion 19 is arranged so as to coincide with each reinforcing portion 43 in the circumferential direction, the portion of the inner cylinder portion 36 that is in close contact with the rattling restricting portion 19 is effectively reinforced. The rattling control function is extremely high.

嵌合状態では、図９及び図１０に示すように、シールリング１８のシール本体２０が嵌合部１４の張出部２５と外筒部３７の前端部との間で径方向について圧縮されることで、両ハウジング１０，３０間のシールがとられる。ここで、シール本体２０が密着する張出部２５の外周面には、曲面２６が形成されているので高い密着性が確保され、もって良好なシール性能が得られる。 9 and 10, the seal body 20 of the seal ring 18 is compressed in the radial direction between the overhanging portion 25 of the fitting portion 14 and the front end portion of the outer cylinder portion 37, as shown in FIGS. Thus, the seal between the housings 10 and 30 is taken. Here, since the curved surface 26 is formed on the outer peripheral surface of the overhang portion 25 to which the seal main body 20 is in close contact, high adhesion is ensured, and good sealing performance is obtained.

ところで、上記したように両ハウジング１０，３０が嵌合された状態では、シールリング１８のシール本体２０は、外筒部３７と嵌合部１４との間で圧縮されているため、外筒部３７の前端部には、常にシール本体２０から径方向外向きの応力が作用することになる。ところが、各がたつき規制部１９が密着している内筒部３６は、外筒部３７との間に溝部３８分の空間を空けて径方向内側に離間して配置されているから、仮に外筒部と内筒部との間に溝部が形成されず両筒部が一体化された場合と比較すると、外筒部３７に作用する応力が内筒部３６に影響し難くなっている。これにより、内筒部３６を各がたつき規制部１９に対して良好に密着状態に保つことができ、もってがたつき規制機能が経時的に劣化するのを極力防ぐことができる。なお、内筒部３６は、外筒部３７に対して補強部４３によって周方向について部分的に（間欠的に）連結されているものの、外筒部３７が内筒部３６よりも前方へ延出し、その延出した前端部に対してシールリング１８が密着しているので、応力が内筒部３６に影響し難くなっている。 By the way, in the state where both housings 10 and 30 are fitted as described above, the seal body 20 of the seal ring 18 is compressed between the outer cylinder part 37 and the fitting part 14, so that the outer cylinder part A radially outward stress always acts on the front end portion of 37 from the seal body 20. However, since the inner cylinder part 36 to which the rattling regulating part 19 is in close contact is disposed with a space for the groove part 38 between the inner cylinder part 37 and spaced apart radially inward, Compared with the case where the groove portion is not formed between the outer tube portion and the inner tube portion and the both tube portions are integrated, the stress acting on the outer tube portion 37 is less likely to affect the inner tube portion 36. Thereby, the inner cylinder part 36 can be kept in an intimate contact state with each rattling regulating part 19, and it is possible to prevent the rattling regulating function from being deteriorated with time. Although the inner cylinder part 36 is partially (intermittently) connected to the outer cylinder part 37 in the circumferential direction by the reinforcing part 43, the outer cylinder part 37 extends forward from the inner cylinder part 36. Since the seal ring 18 is in close contact with the extended front end portion, the stress hardly affects the inner cylinder portion 36.

以上説明したように本実施形態によれば、嵌合部１４における筒状部３２との対向周面である外周面には、シールリング１８が装着される曲面２６が形成され、嵌合部１４における筒状部３２との対向周面である外周面のうち曲面２６の前方にずれた位置には、がたつき規制部１９が一体形成される平坦面２７が形成されているから、曲面２６によって良好なシール性能が得られるとともに、がたつき規制部１９を一体形成する上での寸法管理が容易なものとなる。これにより、高いシール性能を得つつがたつき規制機能を確実に発揮させることができる。また、平坦面２７が曲面２６よりも前側に配置されているから、筒状部３２のうち前端側と比べて開き難い根元側ががたつき規制部１９に当接されることになり、より良好ながたつき規制機能が得られる。 As described above, according to the present embodiment, the curved surface 26 to which the seal ring 18 is attached is formed on the outer peripheral surface that is the peripheral surface of the fitting portion 14 that faces the cylindrical portion 32. Since a flat surface 27 on which the rattling restricting portion 19 is integrally formed is formed at a position shifted to the front of the curved surface 26 in the outer peripheral surface which is a peripheral surface facing the cylindrical portion 32 in the curved surface 26. As a result, good sealing performance can be obtained, and dimensional management can be facilitated when the backlash restricting portion 19 is integrally formed. Thereby, the rattling regulation function can be reliably exhibited while obtaining high sealing performance. Further, since the flat surface 27 is disposed on the front side of the curved surface 26, the root side of the cylindrical portion 32 that is hard to open compared to the front end side is brought into contact with the rattling regulating portion 19 and is more favorable. A rattling control function can be obtained.

また、嵌合部１４における平坦面２７よりも後側に平坦面２７よりも径方向外側に張り出す張出部２５が形成され、この張出部２５に曲面２６が形成されているから、平坦面２７が曲面２６よりも径方向内側に引っ込み、嵌合にシールリング１８を装着する際にがたつき規制部１９がシールリング１８に干渉するのを回避することができる。これにより、シールリング１８に傷が付くなどしてシール性能が劣化する事態が防がれる。 In addition, an overhang portion 25 is formed on the rear side of the flat portion 27 in the fitting portion 14 so as to protrude outward in the radial direction from the flat surface 27, and a curved surface 26 is formed on the overhang portion 25. It can be avoided that the surface 27 retracts radially inward from the curved surface 26 and the rattling restricting portion 19 interferes with the seal ring 18 when the seal ring 18 is mounted for fitting. As a result, it is possible to prevent the seal performance from being deteriorated due to the seal ring 18 being scratched.

また、雄ハウジング３０の筒状部３２が、雌ハウジング１０の嵌合部１４との間にがたつき規制部１９が介在される内筒部３６と、内筒部３６の径方向外側に配されてその間に溝部３８を保有するとともに嵌合部１４との間にシールリング１８が介在される外筒部３７とから構成され、全体として二重筒構造となっているから、嵌合状態において圧縮されたシールリング１８から外筒部３７に作用する応力が、がたつき規制部１９を介在させる内筒部３６に影響し難くなっている。これにより、がたつき規制機能が経時的に劣化するのを防ぐことができ、もって良好ながたつき規制機能を得ることができる。しかも、内筒部３６と外筒部３７との間に形成される溝部３８のスペースを利用してシールリング１８を設置することができるから、径方向についてコネクタＣを小型化することができる。 Further, the cylindrical portion 32 of the male housing 30 is disposed on the radially outer side of the inner cylindrical portion 36 and the inner cylindrical portion 36 in which the rattling regulating portion 19 is interposed between the fitting portion 14 of the female housing 10. Since it has a groove portion 38 and an outer cylinder portion 37 in which the seal ring 18 is interposed between the groove portion 38 and the fitting portion 14, it has a double cylinder structure as a whole. The stress acting on the outer cylinder part 37 from the compressed seal ring 18 is less likely to affect the inner cylinder part 36 with the rattling restriction part 19 interposed. As a result, it is possible to prevent the rattling regulating function from deteriorating over time, thereby obtaining a favorable rattling regulating function. In addition, since the seal ring 18 can be installed using the space of the groove portion 38 formed between the inner cylinder portion 36 and the outer cylinder portion 37, the connector C can be downsized in the radial direction.

また、溝部３８は、両ハウジング１０，３０を嵌合した状態でがたつき規制部１９及びシールリング１８（両ハウジング１０，３０の嵌合面）よりも奥深く形成されているから、シールリング１８から作用する応力が内筒部３６に一層影響し難くなっている。しかも、溝部３８によって雄ハウジング３０のハウジング本体３１を肉抜きしているので、雄ハウジング３０を樹脂成形する際にひけが生じ難くなる。これにより、筒状部３２の寸法精度が高くなり、高いシール性能が得られる。 Further, since the groove portion 38 is formed deeper than the rattling regulating portion 19 and the seal ring 18 (fitting surface of both the housings 10 and 30) in a state where both the housings 10 and 30 are fitted, the seal ring 18 is formed. Thus, the stress acting on the inner cylinder portion 36 is less likely to be affected. Moreover, since the housing main body 31 of the male housing 30 is cut out by the groove portion 38, sink marks are unlikely to occur when the male housing 30 is molded with resin. Thereby, the dimensional accuracy of the cylindrical part 32 becomes high, and high sealing performance is obtained.

また、シールリング１８は、外筒部３７の前端部によって圧縮されるようになっているから、仮に外筒部３７のうち前端部よりも根元側でシールリング１８を圧縮した場合と比較すると、内筒部３６への応力の影響を一層低減できる。 In addition, since the seal ring 18 is compressed by the front end portion of the outer cylinder portion 37, if compared with a case where the seal ring 18 is compressed closer to the root side than the front end portion of the outer cylinder portion 37, The influence of stress on the inner cylinder portion 36 can be further reduced.

また、外筒部３７が内筒部３６よりも前方へ突き出しており、外筒部３７のうちシールリング１８に当接される前端部よりも後側の部分と内筒部３６とが補強部４３によって周方向について部分的に連結されているから、がたつき規制部１９を介在させる内筒部３６の強度を高めることができ、がたつき規制機能を強化できる。一方、外筒部３７のうちシールリング１８に当接される前端部は、補強部４３によって内筒部３６とは連結されないので、シールリング１８の応力の内筒部３６への影響は軽微なもので済む。しかも、補強部４３の周方向についての配設位置ががたつき規制部１９と同じになっているから、がたつき規制機能を一層高くすることができる。 Further, the outer cylinder part 37 projects forward from the inner cylinder part 36, and the rear part of the outer cylinder part 37 that is in contact with the seal ring 18 and the inner cylinder part 36 are the reinforcing part. Since it is partially connected in the circumferential direction by 43, it is possible to increase the strength of the inner cylinder part 36 through which the rattling regulating part 19 is interposed, and to strengthen the rattling regulating function. On the other hand, since the front end portion of the outer cylinder portion 37 that is in contact with the seal ring 18 is not connected to the inner cylinder portion 36 by the reinforcing portion 43, the influence of the stress of the seal ring 18 on the inner cylinder portion 36 is slight. Just do things. In addition, since the arrangement position of the reinforcing portion 43 in the circumferential direction is the same as that of the rattling regulating portion 19, the rattling regulating function can be further enhanced.

また、内筒部３６の奥壁から雌ハウジング１０が傾いた姿勢で嵌合されるのを規制するためのこじり防止片４２が前方へ突き出して形成され、このこじり防止片４２の前端位置が内筒部３６の前端位置と外筒部３７の前端位置との間に設定されているから、こじり防止片４２によって傾いた姿勢の雌ハウジング１０が内筒部３６に干渉するのが防がれるとともに、外筒部３７によってこじり防止片４２を保護することができる。内筒部３６への雌ハウジング１０の干渉を防ぐことで、がたつき規制部１９を介在させる内筒部３６に変形が生じるのが防がれ、もってがたつき規制機能を良好に発揮することができる。 Further, a kink preventing piece 42 for restricting the female housing 10 from being fitted in an inclined posture from the inner wall of the inner cylinder portion 36 is formed to protrude forward, and the front end position of the kink preventing piece 42 is the inner position. Since it is set between the front end position of the cylindrical portion 36 and the front end position of the outer cylindrical portion 37, the female housing 10 in an inclined posture is prevented from interfering with the inner cylindrical portion 36 by the kink preventing piece 42. The twist preventing piece 42 can be protected by the outer cylinder portion 37. By preventing the female housing 10 from interfering with the inner cylinder part 36, deformation of the inner cylinder part 36 interposing the rattling regulating part 19 is prevented, and the rattling regulating function can be satisfactorily exhibited. be able to.

また、がたつき規制部１９が雌ハウジング１０に一体形成されているから、仮にがたつき規制部１９を別部品とした場合と比べると、組み付けに伴うがたつきや位置ずれが生じることがなく、もってがたつき規制機能を確実に発揮することができるとともに、部品点数の削減や組付工数の低減を図ることができる。 Further, since the rattling restricting portion 19 is integrally formed with the female housing 10, rattling or misalignment may occur during assembly as compared with a case where the rattling restricting portion 19 is a separate part. Therefore, it is possible to reliably exert the rattling control function and to reduce the number of parts and the number of assembly steps.

＜他の実施形態＞
本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれる。
（１）上記した実施形態では、曲面が嵌合部の後端部（張出部）において周方向について部分的に形成された場合を示したが、曲面が嵌合部の全周にわたって形成されるようにしてもよく、それ以外にも曲面の形成範囲を変更することが可能である。また、張出部を省略し、嵌合部が全長にわたって径寸法が変化しない柱状に形成されたものも本発明に含まれる。 <Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above-described embodiment, the case where the curved surface is partially formed in the circumferential direction at the rear end portion (projecting portion) of the fitting portion is shown, but the curved surface is formed over the entire circumference of the fitting portion. Alternatively, the curved surface formation range can be changed. Moreover, what formed the column shape which abbreviate | omitting an overhang | projection part and a fitting part does not change a diameter dimension over the full length is also contained in this invention.

（２）上記した実施形態では、嵌合部において平坦面が前側に、曲面が後側に互いにずれて配置された場合を示したが、前後逆とし、平坦面が後側に、曲面が前側に配置されたものも本発明に含まれる。その場合、外筒部にがたつき規制部が当接され、内筒部にシールリングが密着する構成となる。 (2) In the above-described embodiment, the case where the flat surface is arranged at the front side and the curved surface is shifted from each other at the fitting portion is shown, but the front and back are reversed, the flat surface is at the rear side, and the curved surface is at the front side. Those arranged in the above are also included in the present invention. In this case, the rattling regulating portion is brought into contact with the outer cylinder portion, and the seal ring is in close contact with the inner cylinder portion.

（３）上記した実施形態では、雄ハウジングの筒状部が内筒部と外筒部とに分けられた二重筒構造となる場合を示したが、溝部を省略して内筒部と外筒部とを連結し、筒状部を単筒構造としたものも本発明に含まれる。その場合、筒状部におけるがたつき規制部との当接面と、シールリングとの当接面とが径方向にずれるよう、筒状部の内周面に段部を形成すればよい。 (3) In the above-described embodiment, the case where the cylindrical portion of the male housing has a double cylindrical structure in which the inner cylindrical portion and the outer cylindrical portion are divided is shown, but the groove portion is omitted and the inner cylindrical portion and the outer cylindrical portion are omitted. What connected the cylinder part and made the cylindrical part into the single cylinder structure is also contained in this invention. In that case, a stepped portion may be formed on the inner peripheral surface of the cylindrical portion so that the contact surface of the cylindrical portion with the rattling regulating portion and the contact surface with the seal ring are displaced in the radial direction.

（４）上記した実施形態では、雄ハウジングにおいて溝部が嵌合面よりも奥深くにまで形成される場合を示したが、その深さは適宜に変更可能であり、溝部の後端位置を嵌合面と同じ位置としたり、嵌合面よりも前寄りの位置とすることも可能である。 (4) In the above-described embodiment, the case where the groove portion is formed deeper than the fitting surface in the male housing is shown, but the depth can be changed as appropriate, and the rear end position of the groove portion is fitted. It is possible to set the same position as the surface or a position closer to the front than the fitting surface.

（５）補強部の数・周方向及び前後方向の配設位置・形状・厚み寸法などは適宜に変更可能である。また、補強部を省略し、内筒部と外筒部とを互いの対向周面同士が繋がることなく独立させるようにしたものも本発明に含まれる。このようにすれば、シールリングの応力が内筒部に影響するのを確実に防ぐことができる。 (5) The number, the arrangement position, the shape, the thickness dimension, and the like of the reinforcing portions in the circumferential direction and the front-rear direction can be appropriately changed. Further, the present invention also includes a configuration in which the reinforcing portion is omitted and the inner cylindrical portion and the outer cylindrical portion are made independent of each other without being connected to each other. If it does in this way, it can prevent reliably that the stress of a seal ring influences an inner cylinder part.

（６）上記した実施形態では、がたつき規制部が雌ハウジング側に設置された場合を示したが、雄ハウジング側（内筒部の内周面）に設置するようにしてもよい。また両ハウジングにそれぞれがたつき規制部を設けるようにしてもよい。 (6) In the above-described embodiment, the case where the rattling restricting portion is installed on the female housing side is shown, but it may be installed on the male housing side (inner peripheral surface of the inner cylinder portion). Moreover, you may make it provide a rattling control part in both housings.

（７）上記した実施形態では、シールリングが雌ハウジング側に装着された場合を示したが、雄ハウジング側（外筒部の内周面）に装着するようにしてもよい。 (7) In the above-described embodiment, the case where the seal ring is mounted on the female housing side is shown. However, the seal ring may be mounted on the male housing side (the inner peripheral surface of the outer cylinder portion).

（８）上記した実施形態では、内筒部と嵌合部との間にがたつき規制部が介在し、外筒部と嵌合部との間にシールリングが介在する場合を示したが、逆に外筒部と嵌合部との間にシールリングが介在し、内筒部と嵌合部との間にがたつき規制部が介在する構成としたものも本発明に含まれる。 (8) In the above-described embodiment, the case where the rattling regulating portion is interposed between the inner cylinder portion and the fitting portion and the seal ring is interposed between the outer cylinder portion and the fitting portion has been shown. On the contrary, the present invention includes a configuration in which a seal ring is interposed between the outer tube portion and the fitting portion and a rattling restriction portion is interposed between the inner tube portion and the fitting portion.

（９）上記した実施形態では、がたつき規制部が雌ハウジングに一体形成される場合を示したが、雌ハウジングとは別部品に設けるようにしたものも本発明に含まれる。別部品は、がたつき規制専用の部品であっても、端子金具の抜け止めを図るための部品（いわゆるフロントリテーナやサイドリテーナ）であってもよい。 (9) In the above-described embodiment, the case where the rattling regulating portion is integrally formed with the female housing has been shown, but the present invention includes a configuration in which the rattling restricting portion is provided separately from the female housing. The separate part may be a part dedicated to rattling or a part for preventing the terminal fitting from coming off (so-called front retainer or side retainer).

（１０）上記した実施形態では、外筒部の前端部がシールリングに密着される場合を示したが、前端部よりも根元側の部分をシールリングに密着させるようにしたものも本発明に含まれる。 (10) In the above-described embodiment, the case where the front end portion of the outer cylinder portion is in close contact with the seal ring has been shown. However, the present invention includes a configuration in which a portion closer to the root side than the front end portion is in close contact with the seal ring. included.

（１１）上記した実施形態では、外筒部が内筒部よりも前方へ突き出す形態とされる場合を示したが、外筒部と内筒部との前端位置が同じであってもよく、また逆に外筒部よりも内筒部の方が前方へ突き出す形態であってもよい。 (11) In the above-described embodiment, the case where the outer cylinder portion is configured to protrude forward from the inner cylinder portion has been shown, but the front end positions of the outer cylinder portion and the inner cylinder portion may be the same, Conversely, the inner cylinder part may protrude forward rather than the outer cylinder part.

（１２）上記した実施形態では、雌ハウジングが嵌合部を取り囲む保護筒部を備えたものを示したが、保護筒部を省略したものも本発明に含まれる。 (12) In the above-described embodiment, the female housing is provided with the protective cylinder portion that surrounds the fitting portion. However, the invention is also included in the present invention in which the protective cylinder portion is omitted.

（１３）上記した実施形態では、雄ハウジングにブラケット取付部を設置した場合を示したが、ブラケット取付部を雌ハウジング側に設置することもできる。またブラケット取付部を省略することもできる。 (13) In the above-described embodiment, the case where the bracket mounting portion is installed in the male housing is shown, but the bracket mounting portion can be installed on the female housing side. Further, the bracket mounting portion can be omitted.

（１４）上記した実施形態では、雄ハウジング側に外筒部及び内筒部を設置した場合を示したが、雌ハウジング側に外筒部及び内筒部を設置してもよい。 (14) In the above-described embodiment, the case where the outer cylinder part and the inner cylinder part are installed on the male housing side is shown, but the outer cylinder part and the inner cylinder part may be installed on the female housing side.

（１５）上記した実施形態では、雄雌の端子金具が電線の端末に接続された場合を示したが、端子金具がハウジング内にインサートされたものも本発明に含まれる。 (15) In the above-described embodiment, the case where the male and female terminal fittings are connected to the end of the electric wire has been shown. However, the present invention includes the case where the terminal fitting is inserted into the housing.

本発明の一実施形態に係る雄ハウジングの正面図The front view of the male housing which concerns on one Embodiment of this invention 雌ハウジングの正面図Front view of female housing シールリングの正面図Front view of seal ring シールリングを雌ハウジングに装着する前の状態を示す図２及び図３のＡ−Ａ線断面図A cross-sectional view taken along line AA in FIGS. 2 and 3 showing a state before the seal ring is mounted on the female housing. シールリングを雌ハウジングに装着する前の状態を示す図２及び図３のＢ−Ｂ線断面図Sectional view taken along the line BB in FIGS. 2 and 3 showing a state before the seal ring is mounted on the female housing. シールリングを装着した雌ハウジングの正面図Front view of female housing with seal ring 両ハウジングを嵌合する前の状態を示す図１及び図６のＡ−Ａ線断面図AA line sectional view of Drawing 1 and Drawing 6 which shows the state before fitting both housings 両ハウジングを嵌合する前の状態を示す図１及び図６のＢ−Ｂ線断面図Sectional view taken along the line BB in FIGS. 1 and 6 showing a state before the two housings are fitted together. 両ハウジングを嵌合した状態を示す図１及び図６のＡ−Ａ線断面図AA line sectional view of Drawing 1 and Drawing 6 showing the state where both housings were fitted 両ハウジングを嵌合した状態を示す図１及び図６のＢ−Ｂ線断面図BB sectional view of FIG. 1 and FIG. 6 showing a state in which both housings are fitted 図９及び図１０のＣ−Ｃ線断面図CC sectional view of FIG.9 and FIG.10.

Explanation of symbols

１０…雌ハウジング（他方のコネクタハウジング）
１４…嵌合部
１８…シールリング
１９…がたつき規制部
２５…張出部
２６…曲面
２７…平坦面
３０…雄ハウジング（一方のコネクタハウジング）
３２…筒状部
３６…内筒部
３７…外筒部
３８…溝部
４２…こじり防止片（こじり防止部）
４３…補強部 10: Female housing (the other connector housing)
DESCRIPTION OF SYMBOLS 14 ... Fitting part 18 ... Seal ring 19 ... Shaking regulation part 25 ... Overhang part 26 ... Curved surface 27 ... Flat surface 30 ... Male housing (one connector housing)
32 ... Cylindrical part 36 ... Inner cylinder part 37 ... Outer cylinder part 38 ... Groove part 42 ... Kink prevention piece (koji prevention part)
43. Reinforcing part

Claims

One connector housing with a tubular portion;
The other connector housing having a fitting portion to be fitted into the tubular portion;
A seal ring that is attached to the peripheral surface of the fitting portion facing the cylindrical portion and is compressed between the opposing peripheral surface of the cylindrical portion, and a seal between the connector housings,
Provided on the peripheral surface of the fitting portion that faces the cylindrical portion, and fills a gap between the cylindrical portion and the opposing peripheral surface to restrict the two housings from shaking in the radial direction. The rattling control section,
Of the circumferential surface facing the tubular portion in the fitting portion, a curved surface formed on a portion where the seal ring is mounted;
A connector provided with a flat surface that is formed at a position shifted forward or rearward of the curved surface, and a flat surface on which the rattling restricting portion is integrally formed, of the peripheral surface of the fitting portion facing the cylindrical portion. .

The connector according to claim 1, wherein the flat surface is disposed in front of the curved surface in the fitting portion.

3. The overhanging portion that protrudes radially outward from the flat surface is formed behind the flat surface in the fitting portion, and the curved surface is formed in the overhanging portion. connector.

The cylindrical portion is disposed on the radially outer side of the inner cylindrical portion that is in contact with either the seal ring or the shakiness restricting portion, and has a groove portion between the inner cylindrical portion and the inner cylindrical portion. The connector according to any one of claims 1 to 3, comprising a seal ring and an outer tube portion that is in contact with the other side of the shakiness restricting portion.

The connector according to claim 4, wherein the groove is formed deeper than the front end positions of the backlash restricting portion and the seal ring in a state where the two connector housings are fitted.

The connector according to claim 4 or 5, wherein the seal ring is compressed by a front end portion of the inner tube portion or the outer tube portion.

The connector according to any one of claims 4 to 6, wherein the inner cylinder part is brought into contact with the rattling regulating part, and the outer cylinder part is brought into contact with the seal ring.

The outer cylinder portion protrudes forward from the inner cylinder portion, and a portion of the outer cylinder portion that is on the rear side of the portion that comes into contact with the seal ring and the inner cylinder portion are surrounded by a reinforcing portion. The connector according to claim 7, which is partially connected in a direction.

The connector according to claim 8, wherein the reinforcing portion has the same arrangement position in the circumferential direction as the rattling restriction portion.

The outer cylinder part projects forward from the inner cylinder part, and prevents the twisting to restrict the other connector housing from being fitted in an inclined posture from the inner wall of the inner cylinder part. The portion is formed to protrude forward, and the front end position of the kink preventing portion is set between the front end position of the inner tube portion and the front end position of the outer tube portion. The connector according to item 1.