JP2009054505A

JP2009054505A - Waterproof connector

Info

Publication number: JP2009054505A
Application number: JP2007222014A
Authority: JP
Inventors: Katsuya Uesono; 克哉上園; Hiroki Osawa; 寛樹大澤
Original assignee: Sumitomo Wiring Systems Ltd
Current assignee: Sumitomo Wiring Systems Ltd
Priority date: 2007-08-29
Filing date: 2007-08-29
Publication date: 2009-03-12

Abstract

<P>PROBLEM TO BE SOLVED: To secure designated sealability on the basis of suitable workability at the time of insertion of an electric wire. <P>SOLUTION: A waterproof connector includes a connector housing 10 having a cavity 11 capable of inserting a terminal metal fitting 40, and a rubber stopper 60 arranged at the back of the connector housing 10 and having insertion holes 61 capable of inserting electric wires 90 in a waterproof state at every position corresponding to the cavity 11. A plurality of insertion holes 61 are opened on both front and rear faces of the rubber stopper 60. A through-hole 18 of the electric wire 90 which is more rigid than the rubber stopper 60 and is connectable with each insertion hole 61 is arrange on the rear face of the rubber stopper 60, and a plate-shaped elastic deformation regulation section 17 glued along the whole periphery of the insertion hole 61 is covered. An elastic deformation regulation section 17 is integrally arranged on a rear end of the connector housing 10, and is molded together with the rubber stopper 60 in two colors. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、防水コネクタに関する。 The present invention relates to a waterproof connector.

防水コネクタの一例として特許文献１に記載のものが知られている。これは、コネクタハウジングの後部に電線を挿通可能な挿通孔を複数備えた一括型のゴム栓が装着されるとともに、その後方にゴム栓を抜け止めする押さえ部材がゴム栓とは別体に取り付けられた構成となっている。電線の端末は端子金具にかしめ接続され、端子金具は電線とともにゴム栓の挿通孔に挿通されかつコネクタハウジングのキャビティ内に挿入される。ゴム栓の挿通孔は、キャビティと対応する位置毎に設けられており、その内周面が電線の外周面に密着することで電線周りのシールがとられるようになっている。
特開２００２−２０３６４３公報 The thing of patent document 1 is known as an example of a waterproof connector. This is because a batch type rubber plug with a plurality of insertion holes through which electric wires can be inserted is attached to the rear part of the connector housing, and a pressing member that prevents the rubber plug from being attached to the rear is attached separately from the rubber plug. It is the composition which was made. The terminal of the electric wire is caulked and connected to the terminal fitting, and the terminal fitting is inserted into the insertion hole of the rubber plug together with the electric wire and inserted into the cavity of the connector housing. The insertion hole of the rubber plug is provided at each position corresponding to the cavity, and the inner periphery of the rubber plug is in close contact with the outer periphery of the electric wire so that the seal around the electric wire is taken.
Japanese Patent Laid-Open No. 2002-203643

ところで、ゴム栓の挿通孔の最小孔径はシール性を確保するべく電線の外径よりも小さくなっているため、電線が挿通された挿通孔は弾性的に拡径され、その拡径方向に隣接する挿通孔を圧縮して弾性変形させることとなった。したがって、ゴム栓に多数の挿通孔が並列して設けられていると、電線が対応する挿通孔から位置ずれし易くなり、電線と挿通孔との間でアライメントが狂うおそれがあった。そうすると、電線の挿通作業に支障を来たすとともに、電線への密着性が不均一となってシール性にも影響しかねないという事情があった。 By the way, since the minimum hole diameter of the insertion hole of the rubber plug is smaller than the outer diameter of the electric wire in order to ensure the sealing performance, the insertion hole through which the electric wire is inserted is elastically expanded and adjacent to the expansion direction. The insertion hole is compressed and elastically deformed. Therefore, when a large number of insertion holes are provided in parallel in the rubber plug, the electric wires are likely to be displaced from the corresponding insertion holes, and the alignment between the electric wires and the insertion holes may be out of alignment. If it does so, while having troubled the insertion operation of an electric wire, the adhesiveness to an electric wire became non-uniform | heterogenous and there existed a situation which may also affect sealing performance.

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、電線挿通時の作業性を良好にするとともに所定のシール性を保持することを目的とする。 This invention is completed based on the above situations, Comprising: It aims at making workability | operativity at the time of electric wire insertion favorable, and hold | maintaining predetermined sealing performance.

上記の目的を達成するための手段として、請求項１の発明は、電線の端末に接続された端子金具を挿入可能なキャビティを有するコネクタハウジングと、前記コネクタハウジングの後部に設けられ、前記キャビティと対応する位置毎に前記電線を水密状に挿通可能な挿通孔を有するゴム栓とを備え、前記ゴム栓の前後両面に複数の前記挿通孔が開口する防水コネクタであって、前記ゴム栓の前後両面の少なくとも一面には、このゴム栓より高剛性でかつ前記挿通孔と連通可能な前記電線の通し孔を有するとともに前記挿通孔の全周に亘って接着される板状の弾性変形規制部が覆設されている構成としたところに特徴を有する。 As means for achieving the above object, the invention of claim 1 is directed to a connector housing having a cavity into which a terminal fitting connected to an end of an electric wire can be inserted, and provided at a rear portion of the connector housing, A rubber plug having insertion holes through which the electric wires can be inserted in a watertight manner at corresponding positions, and a waterproof connector in which a plurality of the insertion holes are opened on both front and rear surfaces of the rubber plug, before and after the rubber plug A plate-like elastic deformation restricting portion that has a through hole for the electric wire that is more rigid than the rubber plug and can communicate with the insertion hole and that is bonded to the entire circumference of the insertion hole is provided on at least one surface of both surfaces. It is characterized by the configuration of being covered.

請求項２の発明は、請求項１に記載のものにおいて、前記弾性変形規制部は前記コネクタハウジングの後端部に一体に設けられ、前記ゴム栓は、前記コネクタハウジングにおける前記弾性変形規制部と前記キャビティ側の領域との間に二色成形によって設けられるところに特徴を有する。 According to a second aspect of the present invention, in the first aspect, the elastic deformation restricting portion is provided integrally with a rear end portion of the connector housing, and the rubber plug is connected to the elastic deformation restricting portion in the connector housing. It is characterized in that it is provided by two-color molding between the cavity side region.

＜請求項１の発明＞
ゴム栓の前後両面の少なくとも一面に弾性変形規制部が覆設されることにより、ゴム栓の挿通孔周りの弾性変形が規制されるから、電線挿通時に挿通孔が拡径しても隣接する挿通孔に影響を及ぼすのを抑えることができる。したがって、電線と挿通孔との間でアライメントが狂うのを防止でき、電線挿通時の作業性が良好となるのに加え、所定のシール性が確保される。 <Invention of Claim 1>
Since the elastic deformation restricting portion is covered on at least one of the front and rear surfaces of the rubber plug, the elastic deformation around the insertion hole of the rubber plug is restricted, so even if the diameter of the insertion hole is increased, the adjacent insertion The influence on the hole can be suppressed. Therefore, it is possible to prevent the alignment from being misaligned between the electric wire and the insertion hole, and workability at the time of inserting the electric wire is improved, and a predetermined sealing property is ensured.

＜請求項２の発明＞
弾性変形規制部がコネクタハウジングの後端部に一体に設けられ、ゴム栓がコネクタハウジングにおける弾性変形規制部とキャビティ側の領域との間に二色成形によって設けられるから、ゴム栓のコネクタハウジングからの抜け出しが弾性変形規制部によって防止され、従来における専用の押さえ部材が不要となる。結果、部品点数を削減できる。また、二色成形によってゴム栓のコネクタハウジングへの組み付け作業も不要となるとともにゴム栓と弾性変形規制部との一体性が高められる。 <Invention of Claim 2>
The elastic deformation restricting portion is provided integrally with the rear end portion of the connector housing, and the rubber plug is provided by two-color molding between the elastic deformation restricting portion and the cavity side region in the connector housing. Is prevented by the elastic deformation restricting portion, and a conventional dedicated pressing member becomes unnecessary. As a result, the number of parts can be reduced. Also, the two-color molding eliminates the need for assembling the rubber plug to the connector housing, and improves the integrity of the rubber plug and the elastic deformation restricting portion.

＜実施形態１＞
以下、本発明の実施形態１を図１ないし図３によって説明する。本実施形態の防水コネクタは、コネクタハウジング１０、端子金具４０、ゴム栓６０を備えて構成される。コネクタハウジング１０は図示しない相手側ハウジングと嵌合可能とされ、この嵌合に伴って端子金具４０が相手側端子と導通可能に接続される。なお、以下の説明において前後方向については相手側ハウジングとの嵌合面側を前方とする。 <Embodiment 1>
Embodiment 1 of the present invention will be described below with reference to FIGS. The waterproof connector according to this embodiment includes a connector housing 10, a terminal fitting 40, and a rubber plug 60. The connector housing 10 can be mated with a mating housing (not shown), and the terminal fitting 40 is connected to the mating terminal so as to be conductive with the mating. In the following description, in the front-rear direction, the fitting surface side with the counterpart housing is the front.

コネクタハウジング１０は合成樹脂製、詳細にはＰＢＴ（ポリブチレンテレフタレート：polybutylene terephthalate）からなり、全体として幅方向に長い（横長の）ブロック状をなしている。コネクタハウジング１０はＰＢＴ製に限られるものではないが、少なくとも、ゴム栓６０よりは硬度の高い材料で構成されている。そして、コネクタハウジング１０は、前後方向に貫通するキャビティ１１を複数有するハウジング本体１２を備えている。各キャビティ１１には後方から電線９０付きの端子金具４０が挿入され、挿入された端子金具４０はキャビティ１１の内壁に形成された撓み可能なランス１３によって弾性的に抜け止めされる。ランス１３は上下二段のキャビティ１１間を区画する水平壁１４において背合わせ状に設けられ、端子金具４０に対する係止方向が上下で互いに逆向きとなっている。各キャビティ１１の前壁は、端子金具４０のこれ以上の前進を阻止する役割を果たし（前止まり機能）、ここには図示しない相手側の雄タブを挿入案内するタブ挿通口２２が前面に向かって開口して設けられている。 The connector housing 10 is made of synthetic resin, specifically made of PBT (polybutylene terephthalate), and has a long (horizontal) block shape in the width direction as a whole. The connector housing 10 is not limited to PBT but is made of a material having a hardness higher than that of the rubber plug 60. The connector housing 10 includes a housing body 12 having a plurality of cavities 11 penetrating in the front-rear direction. A terminal fitting 40 with an electric wire 90 is inserted into each cavity 11 from the rear, and the inserted terminal fitting 40 is elastically retained by a deflectable lance 13 formed on the inner wall of the cavity 11. The lance 13 is provided in a back-to-back manner on the horizontal wall 14 that divides the upper and lower cavities 11, and the locking direction with respect to the terminal fitting 40 is opposite to each other in the vertical direction. The front wall of each cavity 11 serves to prevent the terminal fitting 40 from further advancing (front stop function), and a tab insertion port 22 for inserting and guiding a male tab on the other side (not shown) faces the front surface. Open.

また、コネクタハウジング１０のうちハウジング本体１２より後方には、ゴム栓６０の収容凹部１５が設けられている。収容凹部１５は、キャビティ１１に連通するとともに水平壁１４を切り欠いて構成され、かつキャビティ１１より外側に膨出する凹陥部１６を備えている。そして、コネクタハウジング１０のうち収容凹部１５より後方には、弾性変形規制部１７が設けられている。弾性変形規制部１７は、全体として略垂直に切り立つ板状をなし、コネクタハウジング１０の後端部に位置するとともに、ハウジング本体１２との間に収容凹部１５を介在して構成されている。弾性変形規制部１７には、各キャビティ１１と同軸で対応する位置に、電線９０及び端子金具４０が通る通し孔１８が前後方向（板厚方向）に貫通して設けられている。弾性変形規制部１７の通し孔１８は、概ね端子金具４０の前端部の断面形状に沿う形状をなし、上段の通し孔１８ではその上縁の幅方向略中央部に、下段の通し孔１８ではその下縁の幅方向略中央部に、それぞれ後述する端子金具４０のスタビライザ４１を逃がすための逃がし凹溝１９が外側に膨出して設けられている。この逃がし凹溝１９は、キャビティ１１側にも同軸で連なっており、その前端はキャビティ１１の前端寄りの位置に達している。また、弾性変形規制部１７の通し孔１８は、ハウジング本体１２のキャビティ１１とほぼ同じ孔径をもって開口しており、キャビティ１１内に端子金具４０が正規挿入されたときに、ここに電線９０が遊嵌されるようになっている。 A housing recess 15 for the rubber plug 60 is provided behind the housing body 12 in the connector housing 10. The housing recess 15 includes a recess 16 that communicates with the cavity 11 and is formed by cutting out the horizontal wall 14 and bulges outward from the cavity 11. An elastic deformation restricting portion 17 is provided behind the housing recess 15 in the connector housing 10. The elastic deformation restricting portion 17 as a whole is formed in a plate shape that stands substantially vertically, is located at the rear end portion of the connector housing 10, and is configured with an accommodating recess 15 interposed between the housing main body 12. The elastic deformation restricting portion 17 is provided with a through hole 18 through which the electric wire 90 and the terminal fitting 40 pass in the front-rear direction (plate thickness direction) at a position coaxially corresponding to each cavity 11. The through hole 18 of the elastic deformation restricting portion 17 has a shape that substantially conforms to the cross-sectional shape of the front end portion of the terminal fitting 40. The upper through hole 18 has a substantially central portion in the width direction of the upper edge thereof, and the lower through hole 18 An escape concave groove 19 for escaping a stabilizer 41 of a terminal fitting 40, which will be described later, is provided on the substantially central portion of the lower edge in the width direction so as to bulge outward. This escape concave groove 19 is also coaxially connected to the cavity 11 side, and its front end reaches a position near the front end of the cavity 11. Further, the through hole 18 of the elastic deformation restricting portion 17 is opened with substantially the same hole diameter as that of the cavity 11 of the housing body 12, and when the terminal fitting 40 is properly inserted into the cavity 11, the electric wire 90 is loosened here. It is designed to be fitted.

端子金具４０は導電性の金属板を曲げ加工等して形成され、前後方向に細長い形状をなしている。この端子金具４０は、前部に筒状の本体部４２を、後部にオープンバレル状のバレル部４３，４４を備えた雌型端子金具として構成される。本体部４２内には図示しない弾性接触片が設けられ、コネクタハウジング１０が相手側ハウジングと正規嵌合されるに伴い、前方から進入する相手側の雄タブと弾性的に接触するようになっている。また、本体部４２の側壁には、キャビティ１１内に端子金具４０が正規挿入されたときに、ランス１３が嵌るランス孔４５が開口して設けられている。そして、本体部４２の側壁のうちランス孔４５とは反対側の幅方向略中央部には、スタビライザ４１が叩き出して設けられている。スタビライザ４１は、端子金具４０のキャビティ１１への挿入過程で、キャビティ１１及び通し孔１８の逃がし凹溝１９内に進入し、これにより端子金具４０の挿入案内をなすとともに端子金具４０の上下反転した誤挿入を阻止する役割をもっている。本実施形態におけるスタビライザ４１は本体部４２の側壁の上面に切れ目なく連続する形状をなし、ゴム栓６０への挿通時にゴム栓６０に傷が付かないようにしてある。バレル部４３，４４は、前方に位置して電線９０の端末芯線にかしめ接続されるワイヤバレル４３と、後方に位置して電線９０の端末被覆にかしめ接続されるインシュレーションバレル４４とからなり、全体として本体部４２と同じかあるいは本体部４２よりやや大きい断面形状をもって構成されている。 The terminal fitting 40 is formed by bending a conductive metal plate and has an elongated shape in the front-rear direction. The terminal fitting 40 is configured as a female terminal fitting including a cylindrical main body portion 42 at the front portion and open barrel-like barrel portions 43 and 44 at the rear portion. An elastic contact piece (not shown) is provided in the main body 42 and comes into elastic contact with the mating male tab entering from the front as the connector housing 10 is properly fitted with the mating housing. Yes. Further, a lance hole 45 into which the lance 13 is fitted when the terminal fitting 40 is properly inserted into the cavity 11 is provided on the side wall of the main body 42. And the stabilizer 41 is knocked out and provided in the center part of the width direction on the opposite side to the lance hole 45 among the side walls of the main-body part 42. As shown in FIG. In the process of inserting the terminal fitting 40 into the cavity 11, the stabilizer 41 enters the escape groove 19 of the cavity 11 and the through hole 18, thereby guiding the insertion of the terminal fitting 40 and turning the terminal fitting 40 upside down. It has a role to prevent erroneous insertion. The stabilizer 41 in the present embodiment has a shape that is continuous with the upper surface of the side wall of the main body 42 so that the rubber plug 60 is not damaged when inserted into the rubber plug 60. The barrel portions 43 and 44 are composed of a wire barrel 43 that is positioned forward and caulked to the terminal core wire of the electric wire 90, and an insulation barrel 44 that is positioned rearward and caulked to the end covering of the electric wire 90, As a whole, the cross-sectional shape is the same as or slightly larger than that of the main body 42.

続いてゴム栓６０について説明すると、ゴム栓６０はシリコン製であって幅方向に長い（横長の）扁平形状をなし、コネクタハウジング１０の収容凹部１５内に二色成形で一体に設けられている。ゴム栓６０には、前後方向に貫通する電線９０及び端子金具４０を挿通する挿通孔６１が設けられている。ゴム栓６０の挿通孔６１は、各キャビティ１１と対応する位置毎に複数配置され、前面側では各キャビティ１１と同軸で連通し、後面側では各通し孔１８と同軸で連通している。ゴム栓６０の前後両面には、幅方向に複数列、詳細には九列で、かつ高さ方向に複数段、詳細には二段とされた挿通孔６１が整列状態で開口するとともに、その前後両面の挿通孔６１の開口縁に、端子金具４０の挿入案内をなすテーパ状の誘い込み縁６２Ｆ，６２Ｒが設けられている。挿通孔６１の孔径は電線９０の外径よりも少し小さく設定され、挿通孔６１の内周面と電線９０の外周面とが水密状に密着可能となっている。また、ゴム栓６０の外周面は収容凹部１５（凹陥部１６）の内周面に二色成形によって一体に接着されており、この間のシール性が確実に担保され、かつ、ゴム栓６０の外周縁が凹陥部１６に嵌合することでゴム栓６０の前後移動が阻止されるようになっている。 Next, the rubber plug 60 will be described. The rubber plug 60 is made of silicon and has a flat shape that is long in the width direction (horizontally long), and is integrally provided in the housing recess 15 of the connector housing 10 by two-color molding. . The rubber plug 60 is provided with an insertion hole 61 through which the electric wire 90 penetrating in the front-rear direction and the terminal fitting 40 are inserted. A plurality of insertion holes 61 of the rubber plug 60 are arranged at positions corresponding to the respective cavities 11, and are communicated coaxially with the cavities 11 on the front surface side and communicated coaxially with the through holes 18 on the rear surface side. On both front and rear surfaces of the rubber plug 60, there are arranged through holes 61 that are arranged in a plurality of rows in the width direction, specifically in nine rows, and in a plurality of rows in the height direction, specifically in two rows. Tapered guiding edges 62F and 62R that guide the insertion of the terminal fitting 40 are provided at the opening edges of the front and rear insertion holes 61. The hole diameter of the insertion hole 61 is set slightly smaller than the outer diameter of the electric wire 90, and the inner peripheral surface of the insertion hole 61 and the outer peripheral surface of the electric wire 90 can be in close contact with each other in a watertight manner. Further, the outer peripheral surface of the rubber plug 60 is integrally bonded to the inner peripheral surface of the accommodating recess 15 (concave portion 16) by two-color molding, and the sealing performance between the two is reliably ensured, and the outer surface of the rubber plug 60 is secured. The front and rear movement of the rubber plug 60 is prevented by the peripheral edge fitting into the recessed portion 16.

さらに、ゴム栓６０の後面は弾性変形規制部１７の前面に二色成形によって一体に接着されており、挿通孔６１の後面開口の孔周りが全周に亘って弾性変形規制部１７の通し孔１８の前面開口の孔周りに接着（融着）されることで、挿通孔６１の後面開口の孔周りの弾性変形が生じ難い形状としてある。同様に、ゴム栓６０の前面はハウジング本体１２の後面に二色成形によって一体に接着されており、挿通孔６１の前面開口の孔周りが全周に亘ってハウジング本体１２のキャビティ１１の後面開口の孔周りに接着（融着）されることで、挿通孔６１の前面開口の孔周りの弾性変形も生じ難い形状としてある。 Further, the rear surface of the rubber plug 60 is integrally bonded to the front surface of the elastic deformation restricting portion 17 by two-color molding, and the hole around the rear surface opening of the insertion hole 61 extends around the entire circumference of the through hole of the elastic deformation restricting portion 17. By being bonded (fused) around the holes in the front opening 18, elastic deformation around the holes in the rear opening of the insertion hole 61 is difficult to occur. Similarly, the front surface of the rubber plug 60 is integrally bonded to the rear surface of the housing main body 12 by two-color molding, and the periphery of the front opening of the insertion hole 61 is entirely opened around the rear surface of the cavity 11 of the housing main body 12. By being bonded (fused) around the holes, elastic deformation around the hole of the front opening of the insertion hole 61 is difficult to occur.

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。
まず防水コネクタのコネクタハウジング１０を成形し、このコネクタハウジング１０の収容凹部１５に対し、図示しない注入孔からシリコンを注入して、ゴム栓６０を二色成形する。このとき、必要に応じて加硫処理を施しても構わない。かかる二色成形により、ゴム栓６０とコネクタハウジング１０とが一体的に接着され、かつ、ハウジング本体１２のキャビティ１１と、ゴム栓６０の挿通孔６１と、弾性変形規制部１７の通し孔１８とが、前後方向に同軸で貫通することとなる。 This embodiment has the structure as described above, and the operation thereof will be described subsequently.
First, the connector housing 10 of the waterproof connector is molded, and silicon is injected into the housing recess 15 of the connector housing 10 from an injection hole (not shown) to form the rubber plug 60 in two colors. At this time, you may perform a vulcanization process as needed. By such two-color molding, the rubber plug 60 and the connector housing 10 are integrally bonded, and the cavity 11 of the housing body 12, the insertion hole 61 of the rubber plug 60, and the through hole 18 of the elastic deformation restricting portion 17. However, it will penetrate coaxially in the front-back direction.

上記の状態で弾性変形規制部１７の後方から電線９０付きの端子金具４０を挿入する。挿入の過程では、端子金具４０の本体部４２がゴム栓６０の誘い込み縁６２Ｆ，６２Ｒによって案内されつつ挿通孔６１内に進入し、本体部４２が挿通孔６１の内周面を径方向外向きに押圧することで、挿通孔６１を拡径させる。しかし、この挿通孔６１の拡径動作に起因するゴム栓６０の弾性変形は、ゴム栓６０の前面側では弾性変形規制部１７との接着部位にて、ゴム栓６０の後面側ではハウジング本体１２との接着部位にて、それぞれ食い止められるため、隣接する挿通孔６１に変形の影響が及ぶことはない。したがって、隣接する挿通孔６１とここに挿入される端子金具４０（電線９０）との芯ずれが防止され、各挿通孔６１に対して電線９０付きの端子金具４０をスムーズに挿入することが可能となる。そして、端子金具４０がキャビティ１１内に正規深さで挿入されると、ランス１３がランス孔４５に嵌って端子金具４０が抜け止め状態で弾性係止されるとともに、電線９０の外周面と挿通孔６１の内周面とが緊密に密着し、電線９０が挿通孔６１の内周面によって周方向から均等な圧縮力を付与され、電線９０周りのシールが確実にとられることとなる。 In the above state, the terminal fitting 40 with the electric wire 90 is inserted from behind the elastic deformation restricting portion 17. In the insertion process, the main body portion 42 of the terminal fitting 40 enters the insertion hole 61 while being guided by the guiding edges 62F and 62R of the rubber plug 60, and the main body portion 42 faces the inner peripheral surface of the insertion hole 61 radially outward. The diameter of the insertion hole 61 is increased by pressing to. However, the elastic deformation of the rubber plug 60 due to the diameter expansion operation of the insertion hole 61 occurs at the adhesion portion with the elastic deformation restricting portion 17 on the front surface side of the rubber plug 60 and on the rear surface side of the rubber plug 60. Therefore, the adjacent insertion holes 61 are not affected by deformation. Accordingly, misalignment between the adjacent insertion hole 61 and the terminal fitting 40 (electric wire 90) inserted therein is prevented, and the terminal fitting 40 with the electric wire 90 can be smoothly inserted into each insertion hole 61. It becomes. When the terminal fitting 40 is inserted into the cavity 11 at a normal depth, the lance 13 is fitted into the lance hole 45 and the terminal fitting 40 is elastically locked in a state of being prevented from coming off, and inserted into the outer peripheral surface of the electric wire 90. The inner peripheral surface of the hole 61 is closely adhered, and the electric wire 90 is given a uniform compressive force from the circumferential direction by the inner peripheral surface of the insertion hole 61, so that the seal around the electric wire 90 is reliably taken.

以上説明したように本実施形態においては、ゴム栓６０の前面側がハウジング本体１２によって覆設され、ゴム栓６０の後面側が弾性変形規制部１７によって覆設されるようにしたことにより、ゴム栓６０の挿通孔６１周りの弾性変形が規制されるようにしたから、挿通孔６１への電線９０の挿通時に、挿通孔６１が拡径しても隣接する挿通孔６１にその拡径の影響が及ぶのを抑えられる。したがって、電線９０と挿通孔６１との間でアライメントが狂うのを防止でき、ゴム栓６０への電線９０の挿通時における作業性が良好となるのに加え、所定のシール性が確保される。 As described above, in the present embodiment, the rubber plug 60 is covered with the front surface side of the housing body 12 and the rear surface side of the rubber plug 60 is covered with the elastic deformation restricting portion 17. Since the elastic deformation around the insertion hole 61 is restricted, when the electric wire 90 is inserted into the insertion hole 61, even if the diameter of the insertion hole 61 increases, the adjacent insertion hole 61 is affected by the expansion. Can be suppressed. Therefore, it is possible to prevent the alignment between the electric wire 90 and the insertion hole 61 from being misaligned, and workability at the time of inserting the electric wire 90 into the rubber plug 60 is improved, and a predetermined sealing property is ensured.

また、弾性変形規制部１７がコネクタハウジング１０の後端部に一体に設けられ、ゴム栓６０がハウジング本体１２と弾性変形規制部１７との間における収容凹部１５内に二色成形によって設けられるから、ゴム栓６０の後方への抜け出しが弾性変形規制部１７によって防止され、従来における専用の押さえ部材が不要となる。その結果、部品点数を削減でき、部品管理の煩わしさがなくなる。また、二色成形によってゴム栓６０のコネクタハウジング１０への組み付け作業も不要となり、作業負担を軽減できる。さらに二色成形によってゴム栓６０と弾性変形規制部１７との一体性が高められ、シール性がより良好に発揮される。 Further, the elastic deformation restricting portion 17 is provided integrally with the rear end portion of the connector housing 10, and the rubber plug 60 is provided in the accommodating recess 15 between the housing body 12 and the elastic deformation restricting portion 17 by two-color molding. The rubber plug 60 is prevented from slipping out backward by the elastic deformation restricting portion 17, and a conventional dedicated pressing member is not required. As a result, the number of parts can be reduced, and the trouble of parts management is eliminated. Also, the assembly work of the rubber plug 60 to the connector housing 10 is not required by the two-color molding, and the work load can be reduced. Furthermore, the two-color molding enhances the integrity of the rubber plug 60 and the elastic deformation restricting portion 17 so that the sealing performance is exhibited better.

＜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）ゴム栓と弾性変形規制部は、コネクタハウジングとは別体にユニット化して設けられるものであってもよい。
（２）ゴム栓の前後方向中間部に弾性変形変形部と同材の板状部を二色成形によって介設し、ゴム栓を前後方向から三層の樹脂で挟むようにしてもよい。これにより、電線挿通時におけるゴム栓の挿通孔周りの弾性変形がより良好に抑えられる。
（３）ゴム栓の前面側のみに弾性変形規制部（上記実施形態ではハウジング本体に相当）が覆設されてもよい。
（４）ゴム栓と弾性変形規制部は接着剤によって接着されてもよい。
（５）本発明は、雄型端子金具を収容した雄側のコネクタハウジングにゴム栓が設けられる場合にも適用可能である。 <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) The rubber plug and the elastic deformation restricting portion may be provided separately as a unit from the connector housing.
(2) A plate-like portion made of the same material as the elastic deformation deformation portion may be interposed in the middle portion in the front-rear direction of the rubber plug by two-color molding, and the rubber plug may be sandwiched between three layers of resin from the front-rear direction. Thereby, the elastic deformation around the insertion hole of the rubber plug at the time of inserting the electric wire can be suppressed better.
(3) The elastic deformation restricting portion (corresponding to the housing body in the above embodiment) may be covered only on the front side of the rubber plug.
(4) The rubber stopper and the elastic deformation restricting portion may be bonded with an adhesive.
(5) The present invention can also be applied to a case where a rubber plug is provided in a male connector housing that houses a male terminal fitting.

本発明の実施形態１の防水コネクタの側断面図1 is a side sectional view of a waterproof connector according to Embodiment 1 of the present invention. 防水コネクタの横断面図Cross section of waterproof connector 防水コネクタの背面図Rear view of waterproof connector

Explanation of symbols

１０…コネクタハウジング
１１…キャビティ
１５…収容凹部
１７…弾性変形規制部
１８…通し孔
４０…端子金具
６０…ゴム栓
６１…挿通孔
９０…電線 DESCRIPTION OF SYMBOLS 10 ... Connector housing 11 ... Cavity 15 ... Housing recessed part 17 ... Elastic deformation control part 18 ... Through-hole 40 ... Terminal metal fitting 60 ... Rubber plug 61 ... Insertion hole 90 ... Electric wire

Claims

A connector housing having a cavity into which a terminal fitting connected to an end of the electric wire can be inserted; and an insertion hole provided at a rear portion of the connector housing and capable of inserting the electric wire in a watertight manner at each position corresponding to the cavity. A rubber plug, and a waterproof connector in which a plurality of insertion holes are opened on both front and rear surfaces of the rubber plug,
At least one of the front and rear surfaces of the rubber plug has a plate-like hole that has a through hole for the electric wire that is more rigid than the rubber plug and can communicate with the insertion hole, and is bonded to the entire circumference of the insertion hole. A waterproof connector characterized in that an elastic deformation restricting portion is covered.

The elastic deformation restricting portion is integrally provided at a rear end portion of the connector housing, and the rubber plug is provided by two-color molding between the elastic deformation restricting portion and the cavity side region in the connector housing. The waterproof connector according to claim 1.