JP2004158356A

JP2004158356A - Water proof connector

Info

Publication number: JP2004158356A
Application number: JP2002324314A
Authority: JP
Inventors: Daiki Nagai; 大樹永易; Koichi Ito; 伊藤　　公一
Original assignee: Sumitomo Wiring Systems Ltd
Current assignee: Sumitomo Wiring Systems Ltd
Priority date: 2002-11-07
Filing date: 2002-11-07
Publication date: 2004-06-03
Anticipated expiration: 2022-11-07
Also published as: JP3915666B2

Abstract

PROBLEM TO BE SOLVED: To prevent a pitch misalignment of a through-hole by a pressing force from an outer periphery at mounting of a built-in rubber plug. SOLUTION: A through-hole 14b communicating with a terminal housing 12a is fitted to a built-in rubber plug 14 mounted inside a hollow part 12d of a main body housing 12, and a rib 14a is fitted to an outer periphery face of the built-in rubber plug 14, and the through-hole 14b located at an outermost periphery of the built-in rubber plug 14 is made to have its insertion tip side bent outward. With this, the outermost through-hole 14b is made to communicate with the terminal housing 12a without a pitch misalignment by linearly deforming, when an inward pressing force is added to an insertion-side tip at mounting of the built-in rubber plug 14 on the terminal housing 12a. COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は防水コネクタに関し、詳しくは、一体型ゴム栓の変形によって貫通穴と端子収容室との間にピッチずれが生じるのを防止するものである。
【０００２】
【従来の技術】
一般に、防水コネクタとして複数の電線挿通経路を一括して防水するために、一体型ゴム栓を使用したものが知られている（特許文献１）。このような防水コネクタ１は、図１０（Ａ）に示すように、複数の端子収容室２ａが形成されたコネクタハウジング２の背面側に、周壁２ｂに囲まれた空洞部２ｃを備えている。そして、この空洞部２ｃの内面には、弾性的に密着可能なリブ３ａが外周に周設された一体型ゴム栓３が装着されている。一体型ゴム栓３は、各端子収容室２ａの配置に対応した貫通穴３ｂが設けられ、この貫通穴３ｂを通して電線Ｗの端末に取り付けられた端子金具Ｔを各端子収容室２ａ内に挿入すると共に、貫通穴３ｂの内周部を電線Ｗ外周に弾性的に密着させることで、電線Ｗとの間の防水を図るようにしている。更に、周壁２ｂの後端面には、空洞部２ｃに装着された一体型ゴム栓３を保持するためのリヤホルダー４が装着されている。
【０００３】
【特許文献１】
特開平９−１７５０７号公報
【０００４】
【発明が解決しようとする課題】
上記の一体型ゴム栓３を用いる防水コネクタ１においては、図１０（Ｂ）に示すように、一体型ゴム栓３をコネクタハウジング２の空洞部２ｃ内に挿入したとき、一体型ゴム栓３が空洞部２ｃの内壁部によって縮径方向に押圧された状態となる。この押圧作用により、特に外周近くの貫通穴３ｂが内方へピッチずれした状態となるため、貫通穴３ｂの中心軸と端子収容室２ａの中心軸にズレが生じる可能性がある。このような位置ズレが生じると、貫通穴３ｂを通して端子収容室２ａ内に端子金具Ｔを挿入する場合、端子金具Ｔの先端部が端子収容室２ａの入り口の隔壁部に当接して変形等を生じるおそれがあった。
【０００５】
本発明は、上記した問題に鑑みてなされたものであり、一体型ゴム栓の装着に伴ってこの一体型ゴム栓に縮径方向の押圧力が作用した場合においても、端子収容室に対する貫通穴の中心軸のズレを最小限に止めることができるようにすることを課題としている。
【０００６】
【課題を解決するための手段】
上記課題を解決するために、本発明は、複数の端子収容室の背面側に周壁に囲まれた空洞部を設けた本体ハウジングと、該本体ハウジングの空洞部の周壁に外嵌して上記空洞部を閉鎖するリヤホルダーと、該リヤホルダーの内面側に突設されて上記空洞部内に押し込まれる一体型ゴム栓とを備え、
上記リヤホルダーおよび一体型ゴム栓に上記端子収容室と連通する貫通穴を設けていると共に、上記一体型ゴム栓の最外周に位置する上記貫通穴は挿入先端側を外方へ屈曲させ、かつ、上記一体型ゴム栓の外周面にリブを設け、
上記一体型ゴム栓のリブが上記空洞部の周壁に圧接されることで、該一体型ゴム栓の挿入側先端に付加される押圧力により上記外方に向けて屈曲させている貫通穴を直線状に変形させて上記端子収容室とピッチずれなく連通させていることを特徴とする防水コネクタを提供している。
【０００７】
上記構成によれば、一体型ゴム栓が本体ハウジングの空洞部に押し込まれることによって縮径方向の押圧力を受けた場合、外方に向けて屈曲されている最外周の貫通穴が、その押圧力により内方へ押圧される結果、貫通穴は直線状となるため、端子収容室との間にピッチずれが生じるのを防止することができる。
【０００８】
また、他の発明においては、上記リヤホルダーおよび一体型ゴム栓に上記端子収容室と連通する貫通穴を設け、上記リヤホルダーの最外周に位置する上記貫通穴を大径とすると共に、該大径の貫通穴に連通させる一体型ゴム栓の最外周に位置する貫通穴はリヤホルダー側を大径穴とし、挿入側先端に向けて貫通穴内面側を外方へ傾斜させる一方、貫通穴外面側は傾斜させずに、該貫通穴を小径化し、かつ、上記一体型ゴム栓の外周面にリブを設け、
上記一体型ゴム栓のリブが上記空洞部の周壁に圧接されることで、該一体型ゴム栓の挿入側先端に付加される押圧力により上記最外周位置の貫通穴が変形して先端挿入側の貫通穴の開口を上記端子収容室とピッチずれなく連通させていることを特徴とする防水コネクタを提供している。
【０００９】
このように構成すれば、一体型ゴム栓が本体ハウジングの空洞部に押し込まれることによって内方への押圧力を受けた場合、外方に向けて内面側を傾斜させた最外周の貫通穴が、その押圧力により内方へ押圧される結果、貫通穴は端子収容室の軸線と一致する状態となるため、端子収容室との間にピッチずれが生じるのを防止することができる。
【００１０】
更に他一方の発明においては、上記リヤホルダーおよび一体型ゴム栓に上記端子収容室と連通する貫通穴を設け、上記一体型ゴム栓の最外周に位置する上記貫通穴は挿入先端側に向けて外面側を外方へ傾斜させる一方、内面側は傾斜させずに、該貫通穴を拡径させ、かつ、上記一体型ゴム栓の外周面にリブを設け、
上記一体型ゴム栓のリブが上記空洞部の周壁に圧接されることで、該一体型ゴム栓の挿入側先端に付加される押圧力により上記最外周位置の貫通穴が変形して先端挿入側の貫通穴の開口を上記端子収容室とピッチずれなく連通させていることを特徴とする防水コネクタを提供している。
【００１１】
これにより、一体型ゴム栓が本体ハウジングの空洞部に押し込まれることによって内方への押圧力を受けた場合、外方に向けて外面側を傾斜させて拡径した貫通穴が、その押圧力により傾斜した外面側が内方へ押圧される結果、拡径した分が縮径されて直線状となり、よって端子収容室との間にピッチずれが生じるのを防止することができる。
【００１２】
また、上記本体ハウジングの空洞部にインナーハウジングを収容すると共に、該インナーハウジングに設けた貫通穴を上記本体ハウジングの端子収容室および上記一体型ゴム栓とリヤホルダーの貫通穴とに直線状に連通させるようにしてもよい。成型上の都合等によりコネクタハウジングを本体ハウジングとインナーハウジングに分割構成したコネクタにおいては、インナーハウジングに設けた貫通穴を通して端子金具を本体ハウジングの端子収容室へ導入することとなる。このような場合においても、インナーハウジングの貫通穴が端子収容室および上記一体型ゴム栓とリヤホルダーの貫通穴とに直線状に連通しているので、端子金具の挿入操作を円滑に行うことができる。
【００１３】
また、電線端末に接続した端子金具を上記リヤホルダー、一体型ゴム栓およびインナーハウジングの貫通穴を通し、上記インナーハウジングの貫通穴に設けた係止部で上記端子金具の被係止部を係止し、該端子金具の先端部を本体ハウジングの端子収容室に収容している。
上記のように一体型ゴム栓は、端子収容室との間のピッチずれが解消されることにより、リヤホルダーを装着した状態で端子金具をリヤホルダーの貫通穴から、一体型ゴム栓およびインナーハウジングを通して本体ハウジングの端子収容室に作業性よく挿入することができる。そして端子金具は、インナーハウジングに設けた係止部により確実に係止保持することができる。
【００１４】
また、上記一体型ゴム栓は弾性を有するエラストマーで成形すると共に上記リヤホルダーを剛性を有する合成樹脂（以下、剛性樹脂と称す）で成形し、該リヤホルダーと上記一体型ゴム栓とは弾性樹脂と剛性樹脂とを二色成形することで一体的に設けるようにするのが好ましい。このようにすれば、一体型ゴム栓の基部がリヤホルダーと一体化されるため、一体型ゴム栓の空洞部への装着時に基部が押圧力を受けても一体型ゴム栓の貫通穴とリヤホルダーの貫通穴との間にピッチずれを生じることがない。よって、リヤホルダーを通しての端子金具の挿入初期段階から端子金具の正規の挿入軌道を確保することができる。
【００１５】
【発明の実施の形態】
以下、本発明の実施形態を図面を参照して説明する。
図１〜図５は本発明の防水コネクタ１０の第１実施形態を示し、合成樹脂製の本体ハウジング１２およびインナーハウジング１３との２体構造からなるハウジング１１と、複数の電線Ｗを一括して挿通可能な一体型ゴム栓１４と、本体ハウジング１２の背面側に装着されるリヤホルダー１５と、電線Ｗの端末に取り付けられて本体ハウジング１２内に収容される端子金具Ｔとからなっている。
【００１６】
本体ハウジング１２は、前後方向に貫通して複数段、複数列にわたって設けた端子収容室１２ａを備え、前面側には相手側コネクタ（図示せず）の雄タブを受け入れるために前面に開放したタブ挿入口１２ｂを備えている。本体ハウジング１２の背面側には、周壁１２ｃを後方へ一体的に延出して、その周壁１２ｃに囲まれた空洞部１２ｄを形成し、この空洞部１２ｄをインナーハウジング１３および一体型ゴム栓１４の収容部としている。空洞部１２ｄは本体ハウジング１２に形成された複数の各端子収容室１２ａの後部に連通している。
【００１７】
インナーハウジング１３は空洞部１２ｄの奥部分に内嵌され、内嵌状態において空洞部１２ｄの後部に一体型ゴム栓１４を装着可能なスペースを残している。このインナーハウジング１３には、本体ハウジング１２の各端子収容室１２ａと連通する貫通穴１３ａが形成され、貫通穴１３ａの内面部には端子金具Ｔの被係止部Ｔａと係合して端子金具Ｔを抜け止め保持するための係止部１３ｂを形成している。図５においては、係止部１３ｂとして端子金具Ｔの挿入方向に向かって方持ち梁状に突出するランスと、被係止部Ｔａとして端子金具Ｔの接続部後端の顎部として示したが、端子金具Ｔを抜け止め保持できれば、係止突起と係止孔、凹部と凸部等の適宜係止手段を採用可能である。
【００１８】
一体型ゴム栓１４は図２（Ａ）（Ｂ）に示すように、弾性を有するエラストマーにより空洞部１２ｄに対応して方形板状に形成されている。一体型ゴム栓１４の外周には外方へ突出する複数本の環状のリブ１４ａが一体的に周設され、図３に示すように、空洞部１２ｄ内に一体型ゴム栓１４を挿入したときリブ１４ａが空洞部１２ｄの周壁１２ｃ内周に弾性的に圧接されるようになっている。また、一体型ゴム栓１４には各端子収容室１２ａに連通するように、各端子収容室１２ａおよびインナーハウジング１３の貫通穴１３ａの配置に対応して、前後方向に貫通する複数の貫通穴１４ｂを形成している。この貫通穴１４ｂの内径は、電線Ｗの外周に対し弾性的に密着可能な径とされている。
【００１９】
リヤホルダー１５は、図１、図２（Ａ）（Ｂ）に示すように、本体ハウジング１２と同様に合成樹脂にて形成され、本体ハウジング１２の空洞部１２ｄを閉鎖するように周壁１２ｃの背面部に外嵌可能なキャップ状とされている。リヤホルダー１５の外周部１５ａと本体ハウジング１２の周壁１２ｃには、図３に示すように、凹凸係合するロック部１６を設けて、リヤホルダー１５を周壁１２ｃに係止固定可能としている。また、リヤホルダー１５の基部１５ｂには一体型ゴム栓１４の各貫通穴１４ｂに対応して、端子金具Ｔを挿通可能な貫通穴１５ｃを形成している。
【００２０】
弾性樹脂からなる一体型ゴム栓１４と、剛性樹脂からなるリヤホルダー１５は基部１５ｂの内面で互いに密着した状態で二色成形により一体化すると共に、両者の貫通穴１４ｂ、１５ｃを互いに連通させた状態としている。
また、一体型ゴム栓１４の最外周に位置する貫通穴１４Ｂは挿入先端側を外方へ屈曲させるようにして傾斜した経路としている。この貫通穴１４Ｂを屈曲させる度合いは、一体型ゴム栓１４が空洞部１２ｄ内に挿入され周壁１２ｃの内周面にてリブ１４ａが圧接されたとき、付加される押圧力により内方へ変形して直線状となる程度に設定している。これにより、一体型ゴム栓１４は空洞部１２ｄへの装着状態において、最外周の貫通穴１４Ｂも貫通穴１３ａおよび端子収容室１２ａとピッチずれなく同一軸線上に配置されることになる。なお、一体型ゴム栓１４の背面側はリヤホルダー１５の基部１５ｂ内面に密着一体化しているので、一体型ゴム栓１４を空洞部１２ｄ内に挿入して外周のリブ１４ａが内方へ押圧されても最外周の貫通穴１４Ｂがピッチずれすることはない。よって、貫通穴１４ｂの挿入先端側のみを外方へ屈曲させるようにしている。
【００２１】
また、本体ハウジング１２には、図５に示すように、端子収容室１２ａ内に挿入された端子金具Ｔからリヤホルダー１５を通して外部へ導出される電線Ｗを保護すると共に、電線Ｗを横出し方向に案内するためのコネクタカバー１７を装着可能としている。
【００２２】
次に上記構成からなる第１実施形態の防水コネクタ１０の作用について説明する。図３に示すように、本体ハウジング１２の空洞部１２ｄ内にインナーハウジング１３を挿入して、貫通穴１３ａを端子収容室１２ａに連通する状態とする。次いで、リヤホルダー１５に一体化された一体型ゴム栓１４を空洞部１２ｄ内に挿入することで外周のリブ１４ａを周壁１２ｃの内周に圧接させて、空洞部１２ｄとの間の水密性を確保する。このとき、一体型ゴム栓１４のリブ１４ａが周壁１２ｃの内周面から内方へ押圧されるため、これに伴って特に最外周に位置する貫通穴１４Ｂがこの押圧力の影響でピッチずれする状況となっている。しかしながら、最外周の貫通穴１４Ｂは、この押圧によるピッチずれを見越して挿入先端側を外方へ屈曲させているので、図４（Ａ）（Ｂ）に示すように、この屈曲させた分が変形して貫通穴１４Ｂは直線状となる。これにより、他の貫通穴１４ｂと同様に最外周の貫通穴１４Ｂも端子収容室１２ａに対し、ピッチずれを生じることなく配置することができる。
【００２３】
一方、一体型ゴム栓１４の基部側においては、リヤホルダー１５と一体成形されているため、リブ１４ａの縮径に伴う押圧力の影響によって最外周の貫通穴１４Ｂのピッチずれを生じることはない。このようにして、空洞部１２ｄ内への一体型ゴム栓１４の挿入が完了すると同時に、リヤホルダー１５の外周部１５ａが周壁１２ｃに外嵌され、ロック部１６によって係止保持される。これにより、リヤホルダー１５から端子収容室１２ａへ至るまで、貫通穴１５ｃ、１４ｂ（１４Ｂ）、１３ａを介して端子金具Ｔの挿入経路が直線状に連通した状態となる。
【００２４】
次いで、図５に示すように、リヤホルダー１５の貫通穴１５ｃから電線Ｗ端末の端子金具Ｔを挿入する。すると、端子金具Ｔは一体型ゴム栓１４の貫通穴１４ｂを拡開しながら挿入され、インナーハウジング１３の貫通穴１３ａを通過して端子収容室１２ａ内へ挿入される。端子金具Ｔの挿入操作に際しては、端子収容室１２ａに至る各貫通穴１３ａ、１４ｂ（１４Ｂ）、１５ｃがピッチずれすることなく直線状に連通しているので、端子金具Ｔの挿入操作を円滑に行うことができる。そして、定位置まで挿入されたとき、インナーハウジング１３の係止部１３ｂが端子金具Ｔの被係止部Ｔａに係合することで端子金具Ｔは抜け止め状態に保持される一方、電線Ｗは貫通穴１４ｂの縮径方向の弾圧力によって水密状態で保持される。
更に、必要に応じて本体ハウジング１２から導出される電線Ｗを保護すると共に、電線Ｗの引き出し方向を横方向へ案内するためのコネクタカバー１７を背面側から被せて固定することもできる。
【００２５】
図６、図７は、防水コネクタ２０の第２実施形態を示し、本実施形態においては、リヤホルダー２５の貫通穴２５ｃのうち最外周に位置する貫通穴２５Ｃを他より大径に設定している。また、一体型ゴム栓２４において、貫通穴２４ｃのうち、リヤホルダー２５の大径の貫通穴２５Ｃに連通する最外周位置する貫通穴２４Ｃは、リヤホルダー２５の基部２５ｂに接する側を大径穴に設定している。これに伴い、最外周の貫通穴２４Ｃの内面側を挿入先端側面に向けて外方へ傾斜させる一方、外面側は傾斜させない状態とすることで最外周の貫通穴２４Ｃを先端に向けて小径化する形状としている。なお、その他の構成は第１実施形態と同様のため同一符号を付して説明を省略する。
本実施形態において、貫通穴２４Ｂの内面側を外方へ傾斜させる度合いは、一体型ゴム栓２４が空洞部１２ｄ内に挿入され周壁１２ｃの内周面にてリブ１４ａが圧接されたとき、付加される押圧力により内方へ変形してピッチずれなく連通することができる程度に設定している。
【００２６】
次に、第２実施形態の作用について説明する。
上記第１実施形態と同様に本体ハウジング１２に対し、インナーハウジング１３、一体型ゴム栓２４およびリヤホルダー２５を装着する。すると、図７（Ａ）（Ｂ）に示すように、上記一体型ゴム栓２４のリブ１４ａが空洞部１２ｄの周壁１２ｃに圧接されることで、一体型ゴム栓２４の挿入先端側に内方へ向けて押圧力が付加される。このとき、最外周の貫通穴２４Ｂは初期設定では内面側が外方へ傾斜しているが、一体型ゴム栓２４の装着に伴う内方への押圧力によって貫通穴２４Ｂが変形して先端挿入側の貫通穴２４Ｂの開口が端子収容室１２ａとピッチずれなく連通する状態となる。
【００２７】
かかる状態から、第１実施形態と同様に、リヤホルダー２５の貫通穴２５ｃから電線Ｗ端末の端子金具Ｔを挿入する。すると、端子金具Ｔは一体型ゴム栓２４の貫通穴２４ｂを拡開しながら挿入され、インナーハウジング１３の貫通穴１３ａを通過して端子収容室１２ａ内へ挿入される。そして、定位置まで挿入されたとき、インナーハウジング１３の係止部１３ｂが端子金具Ｔの被係止部Ｔａに係合することで端子金具Ｔは抜け止め状態に保持される一方、電線Ｗは貫通穴２４ｂの縮径方向の弾圧力によって水密状態で保持される。
更に、必要に応じて本体ハウジング１２から導出される電線Ｗを保護すると共に、電線Ｗの引き出し方向を横方向へ案内するためのコネクタカバー１７を背面側から被せて固定することもできる。
【００２８】
図８、図９は、防水コネクタ３０の第３実施形態を示し、本実施形態においては、一体型ゴム栓３４において、貫通穴３４ｃのうち、最外周位置する貫通穴３４Ｃを挿入先端面側へ向けて拡径するようにしている。詳しくは、リヤホルダー３５の基部３５ｂに接する側から挿入先端側面に向けて外面側を外方へ傾斜させる一方、内面側は傾斜させない状態とすることで挿入先端面側へ向けて拡径する形状としている。なお、その他の構成は第１実施形態と同様のため同一符号を付して説明を省略する。
本実施形態において、貫通穴３４Ｂの外面側を外方へ傾斜させる度合いは、一体型ゴム栓３４が空洞部１２ｄ内に挿入され周壁１２ｃの内周面にてリブ１４ａが圧接されたとき、付加される押圧力により内方へ変形してピッチずれなく連通することができる程度に設定している。
【００２９】
次に、第３実施形態の作用について説明する。
上記第１、第２実施形態と同様に本体ハウジング１２に対し、インナーハウジング１３、一体型ゴム栓３４およびリヤホルダー３５を装着する。すると、上記一体型ゴム栓３４のリブ１４ａが空洞部１２ｄの周壁１２ｃに圧接されることで、一体型ゴム栓３４の挿入先端側に内方へ向けて押圧力が付加される。このとき、最外周の貫通穴３４Ｂは初期設定では外面側が外方へ傾斜して拡径しているが、一体型ゴム栓３４の装着に伴う内方への押圧力によって貫通穴３４Ｂが変形して挿入先端側の貫通穴３４Ｂの開口が端子収容室１２ａとピッチずれなく連通する状態となる。
【００３０】
かかる状態から、第１、第２実施形態と同様に、リヤホルダー３５の貫通穴３５ｃから電線Ｗ端末の端子金具Ｔを挿入する。すると、端子金具Ｔは一体型ゴム栓３４の貫通穴２４ｂを拡開しながら挿入され、インナーハウジング２３の貫通穴１３ａを通過して端子収容室１２ａ内へ挿入される。そして、定位置まで挿入されたとき、インナーハウジング１３の係止部１３ｂが端子金具Ｔの被係止部Ｔａに係合することで端子金具Ｔは抜け止め状態に保持される一方、電線Ｗは貫通穴２４ｂの縮径方向の弾圧力によって水密状態で保持される。
更に、必要に応じて本体ハウジング１２から導出される電線Ｗを保護すると共に、電線Ｗの引き出し方向を横方向へ案内するためのコネクタカバー１７を背面側から被せて固定することもできる。
【００３１】
なお、上記各実施形態においては、ハウジングを本体ハウジングとインナーハウジングの２体構造にした例を示したが、両者一体のハウジングにも同様に適用可能である。また、一体型ゴム栓とリヤホルダーを二色成形により一体化した例を示したが、接着、凹凸嵌合により一体化してもよい。また、端子金具として雌端子を用いた雌コネクタの例を示したが、雄端子を用いた雄コネクタにも同様に適用することができる。
【００３２】
【発明の効果】
以上の説明より明らかなように本発明では、本体ハウジングの空洞部内に一体型ゴム栓を挿入したときに一体型ゴム栓の外周が受ける押圧力の影響によって、最外周の貫通穴のピッチがずれるのを予め予想して最外周の貫通穴に施した屈曲、傾斜等の処理によって吸収することができる。よって、一体型ゴム栓の貫通穴の配列にピッチずれを生じることがなく、一体型ゴム栓を通しての端子収容室内への端子金具の挿入作業を円滑に行うことができる。
【図面の簡単な説明】
【図１】本発明の防水コネクタの実施形態の分解断面図である。
【図２】（Ａ）は一体型ゴム栓とリヤホルダーの正面図、（Ｂ）はＸ−Ｘ断面図である。
【図３】本体ハウジング、インナーハウジング、一体型ゴム栓およびリヤホルダーの組み付け状態の断面図である。
【図４】（Ａ）は一体型ゴム栓を本体ハウジングの空洞部へ挿入する途中段階の要部断面図、（Ｂ）は完全挿入状態の要部断面図である。
【図５】端子収容室へ端子金具を挿入した状態の断面図である。
【図６】第２実施形態の防水コネクタを示し、（Ａ）は一体型ゴム栓とリヤホルダーの正面図、（Ｂ）はＸ−Ｘ断面図である。
【図７】（Ａ）は第２実施形態において、一体型ゴム栓を本体ハウジングの空洞部へ挿入する途中段階の要部断面図、（Ｂ）は端子収容室へ端子金具を挿入した状態の断面図である。
【図８】第３実施形態の防水コネクタを示し、（Ａ）は一体型ゴム栓とリヤホルダーの正面図、（Ｂ）はＸ−Ｘ断面図である。
【図９】（Ａ）は第３実施形態において、一体型ゴム栓を本体ハウジングの空洞部へ挿入する途中段階の要部断面図、（Ｂ）は端子収容室へ端子金具を挿入した状態の断面図である。
【図１０】（Ａ）は従来例の断面図、（Ｂ）は従来例の問題点の概略断面図である。
【符号の説明】
Ｔ端子金具
Ｔａ被係止部
Ｗ電線
１０、２０、３０防水コネクタ
１２本体ハウジング
１２ａ端子収容室
１２ｃ周壁
１２ｄ空洞部
１３インナーハウジング
１３ａ貫通穴
１３ｂ係止部
１４、２４、３４一体型ゴム栓
１４ａリブ
１４ｂ、２４ｂ、２４Ｂ、３４ｂ、３４Ｂ貫通穴
１４ｃ切込溝
１５、２５、３５リヤホルダー
１５ｃ、２５ｃ、３５ｃ貫通穴[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a waterproof connector, and more particularly, to preventing a pitch shift between a through hole and a terminal accommodating chamber due to deformation of an integrated rubber stopper.
[0002]
[Prior art]
2. Description of the Related Art In general, a waterproof connector using an integrated rubber stopper for waterproofing a plurality of electric wire insertion paths at once is known (Patent Document 1). As shown in FIG. 10A, such a waterproof connector 1 includes a cavity 2c surrounded by a peripheral wall 2b on the back side of a connector housing 2 in which a plurality of terminal accommodating chambers 2a are formed. On the inner surface of the hollow portion 2c, an integrated rubber plug 3 having a rib 3a which can be elastically contacted is provided around the outer periphery. The integrated rubber plug 3 is provided with a through hole 3b corresponding to the arrangement of each terminal accommodating chamber 2a, and inserts the terminal fitting T attached to the terminal of the electric wire W into each terminal accommodating chamber 2a through the through hole 3b. At the same time, the inner peripheral portion of the through hole 3b is elastically brought into close contact with the outer periphery of the electric wire W, so that waterproofing with respect to the electric wire W is achieved. Further, a rear holder 4 for holding the integrated rubber plug 3 mounted on the cavity 2c is mounted on the rear end surface of the peripheral wall 2b.
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 9-17507
[Problems to be solved by the invention]
In the waterproof connector 1 using the integrated rubber plug 3 described above, when the integrated rubber plug 3 is inserted into the hollow portion 2c of the connector housing 2 as shown in FIG. The inner wall portion of the cavity 2c is pressed in the diameter reducing direction. Due to this pressing action, in particular, the through-hole 3b near the outer periphery is shifted inwardly in pitch, so that the center axis of the through-hole 3b may be displaced from the center axis of the terminal housing 2a. When such a displacement occurs, when the terminal fitting T is inserted into the terminal receiving chamber 2a through the through-hole 3b, the distal end of the terminal fitting T abuts on the partition wall at the entrance of the terminal receiving chamber 2a to prevent deformation. Was likely to occur.
[0005]
The present invention has been made in view of the above-described problem, and even when a pressing force in the radial direction is applied to the integrated rubber plug with the mounting of the integrated rubber plug, a through hole for the terminal accommodating chamber is provided. It is an object of the present invention to minimize the deviation of the center axis of the camera.
[0006]
[Means for Solving the Problems]
In order to solve the above problem, the present invention provides a main body housing having a cavity surrounded by a peripheral wall on the back side of a plurality of terminal accommodating chambers; A rear holder for closing the portion, and an integrated rubber stopper protruding from the inner surface side of the rear holder and pushed into the hollow portion,
The rear holder and the integral rubber plug are provided with a through hole communicating with the terminal accommodating chamber, and the through hole located at the outermost periphery of the integral rubber stopper bends the insertion tip side outward, and Providing a rib on the outer peripheral surface of the integrated rubber stopper,
When the rib of the integrated rubber plug is pressed against the peripheral wall of the hollow portion, the through-hole bent outwardly by the pressing force applied to the insertion end of the integrated rubber plug is straightened. The waterproof connector is characterized in that the connector is deformed into a shape and communicates with the terminal accommodating chamber without a pitch shift.
[0007]
According to the above configuration, when the integrated rubber plug is pressed into the hollow portion of the main body housing and receives a pressing force in the radially-reduced direction, the outermost through-hole that is bent outward is pressed by the pressing hole. As a result of being pressed inward by the pressure, the through hole becomes linear, so that it is possible to prevent the occurrence of a pitch shift between the through hole and the terminal accommodating chamber.
[0008]
In another invention, a through hole communicating with the terminal accommodating chamber is provided in the rear holder and the integrated rubber plug, and the through hole located at the outermost periphery of the rear holder has a large diameter. The through hole located at the outermost periphery of the integrated rubber plug that communicates with the through hole of the diameter has a large diameter hole on the rear holder side, and the inner surface side of the through hole is inclined outward toward the tip on the insertion side, while the outer surface of the through hole The side is not inclined, the through hole is reduced in diameter, and a rib is provided on the outer peripheral surface of the integrated rubber plug,
When the rib of the integrated rubber plug is pressed against the peripheral wall of the cavity, the through-hole at the outermost peripheral position is deformed by the pressing force applied to the insertion-side distal end of the integrated rubber plug, and the distal-end insertion side is deformed. Wherein the opening of the through hole is communicated with the terminal accommodating chamber without a pitch shift.
[0009]
With this configuration, when the integrated rubber plug is pressed into the cavity of the main body housing and receives an inward pressing force, the outermost through-hole having an inner surface inclined outward is formed. As a result, the through hole is pressed inward by the pressing force, so that the through-hole is aligned with the axis of the terminal receiving chamber. Therefore, it is possible to prevent the occurrence of a pitch deviation from the terminal receiving chamber.
[0010]
In another aspect of the invention, the rear holder and the integral rubber plug are provided with a through hole communicating with the terminal accommodating chamber, and the through hole located at the outermost periphery of the integral rubber stopper is directed toward the insertion distal end. While the outer surface side is inclined outward, the inner surface side is not inclined, the diameter of the through hole is increased, and a rib is provided on the outer peripheral surface of the integrated rubber plug,
When the rib of the integrated rubber plug is pressed against the peripheral wall of the cavity, the through-hole at the outermost peripheral position is deformed by the pressing force applied to the insertion-side distal end of the integrated rubber plug, and the distal-end insertion side is deformed. Wherein the opening of the through hole is communicated with the terminal accommodating chamber without a pitch shift.
[0011]
Accordingly, when the integrated rubber plug is pressed into the cavity of the main body housing and receives an inward pressing force, the through hole whose outer surface is inclined outward and the diameter thereof is increased increases the pressing force. As a result, the inclined outer surface side is pressed inward, so that the increased diameter is reduced in diameter and becomes linear, thereby preventing the occurrence of a pitch deviation from the terminal accommodating chamber.
[0012]
Further, the inner housing is housed in the hollow portion of the main body housing, and the through hole provided in the inner housing is linearly communicated with the terminal accommodating chamber of the main body housing, the integrated rubber plug, and the through hole of the rear holder. You may make it do. In a connector in which the connector housing is divided into a main body housing and an inner housing for convenience in molding, the terminal fitting is introduced into the terminal accommodating chamber of the main body housing through a through hole provided in the inner housing. Even in such a case, since the through hole of the inner housing communicates linearly with the terminal receiving chamber and the integral rubber plug and the through hole of the rear holder, the terminal fitting can be smoothly inserted. it can.
[0013]
Further, the terminal fitting connected to the wire end is passed through the rear holder, the integrated rubber plug and the through hole of the inner housing, and the locked part provided in the through hole of the inner housing engages with the locked part of the terminal fitting. The distal end of the terminal fitting is housed in the terminal housing chamber of the main body housing.
As described above, the integrated rubber stopper is capable of removing the terminal fitting from the through hole of the rear holder while the rear holder is mounted, by eliminating the pitch shift between the terminal housing and the integrated rubber stopper and the inner housing. Can be inserted into the terminal receiving chamber of the main body housing with good workability. The terminal fitting can be reliably locked and held by the locking portion provided on the inner housing.
[0014]
In addition, the integrated rubber stopper is formed of an elastomer having elasticity, and the rear holder is formed of a synthetic resin having rigidity (hereinafter, referred to as rigid resin). The rear holder and the integrated rubber stopper are formed of an elastic resin. And the rigid resin are preferably provided integrally by two-color molding. With this configuration, since the base of the integrated rubber plug is integrated with the rear holder, even if the base receives a pressing force when the integrated rubber plug is mounted in the hollow portion, the through hole of the integrated rubber plug and the rear hole can be used. There is no pitch deviation from the through hole of the holder. Therefore, a proper insertion track of the terminal fitting can be secured from the initial stage of the insertion of the terminal fitting through the rear holder.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIGS. 1 to 5 show a first embodiment of a waterproof connector 10 of the present invention, in which a housing 11 having a two-body structure of a main body housing 12 and an inner housing 13 made of synthetic resin and a plurality of electric wires W are collectively provided. It comprises an integral rubber plug 14 that can be inserted, a rear holder 15 mounted on the back side of the main body housing 12, and a terminal fitting T attached to the end of the electric wire W and housed in the main body housing 12.
[0016]
The main body housing 12 includes a plurality of terminal receiving chambers 12a penetrating in the front-rear direction and provided in a plurality of rows and a plurality of rows. On the front side, a tab opened to the front side to receive a male tab of a mating connector (not shown). It has an insertion port 12b. On the rear side of the main body housing 12, a peripheral wall 12c is integrally extended rearward to form a cavity 12d surrounded by the peripheral wall 12c, and the cavity 12d is formed by the inner housing 13 and the integrated rubber stopper 14. It is a storage section. The cavity 12d communicates with the rear part of each of the terminal housings 12a formed in the main body housing 12.
[0017]
The inner housing 13 is fitted inside the hollow portion 12d, leaving a space in the inner fitted state at the rear of the hollow portion 12d where the integrated rubber plug 14 can be mounted. The inner housing 13 is formed with a through hole 13 a communicating with each terminal accommodating chamber 12 a of the main body housing 12, and the inner surface of the through hole 13 a engages with the locked portion Ta of the terminal fitting T to be connected to the terminal fitting. A locking portion 13b for retaining and holding T is formed. In FIG. 5, the locking portion 13b is shown as a lance projecting like a cantilever in the insertion direction of the terminal fitting T, and the locked portion Ta is shown as a jaw at the rear end of the connection portion of the terminal fitting T. If the terminal fitting T can be retained and retained, appropriate locking means such as locking projections and locking holes, concave portions and convex portions, etc. can be adopted.
[0018]
As shown in FIGS. 2A and 2B, the integrated rubber stopper 14 is formed in a square plate shape corresponding to the cavity 12d by an elastomer having elasticity. A plurality of annular ribs 14a protruding outward are integrally provided around the outer periphery of the integrated rubber plug 14, and when the integrated rubber plug 14 is inserted into the hollow portion 12d as shown in FIG. The rib 14a is elastically pressed against the inner periphery of the peripheral wall 12c of the cavity 12d. Also, a plurality of through holes 14b penetrating in the front-rear direction corresponding to the arrangement of the terminal housing chambers 12a and the through holes 13a of the inner housing 13 so as to communicate with the terminal housing chambers 12a. Is formed. The inner diameter of the through hole 14b is a diameter that can be elastically adhered to the outer periphery of the electric wire W.
[0019]
As shown in FIGS. 1, 2A and 2B, the rear holder 15 is formed of a synthetic resin similarly to the main body housing 12, and the rear surface of the peripheral wall 12c closes the hollow portion 12d of the main body housing 12. It is shaped like a cap that can be externally fitted to the part. As shown in FIG. 3, a lock portion 16 is provided on the outer peripheral portion 15a of the rear holder 15 and the peripheral wall 12c of the main body housing 12 so as to engage with the concave and convex portions so that the rear holder 15 can be locked and fixed to the peripheral wall 12c. The base 15b of the rear holder 15 has through holes 15c through which the terminal fittings T can be inserted, corresponding to the through holes 14b of the integrated rubber plug 14.
[0020]
The integrated rubber stopper 14 made of an elastic resin and the rear holder 15 made of a rigid resin are integrated by two-color molding in a state where they are in close contact with each other on the inner surface of the base portion 15b, and the two through holes 14b and 15c are communicated with each other. State.
In addition, the through hole 14B located at the outermost periphery of the integrated rubber plug 14 has a path inclined so that the insertion tip side is bent outward. The degree to which the through hole 14B is bent is such that when the integrated rubber stopper 14 is inserted into the cavity 12d and the rib 14a is pressed against the inner peripheral surface of the peripheral wall 12c, the rib 14a is deformed inward by the applied pressing force. It is set so that it is linear. Thus, when the integrated rubber plug 14 is mounted on the hollow portion 12d, the outermost through-hole 14B is also arranged on the same axis with the through-hole 13a and the terminal accommodating chamber 12a without a pitch shift. Since the rear side of the integrated rubber plug 14 is tightly integrated with the inner surface of the base 15b of the rear holder 15, the integrated rubber plug 14 is inserted into the cavity 12d, and the outer ribs 14a are pressed inward. However, the pitch of the outermost through-holes 14B does not shift. Therefore, only the insertion end side of the through hole 14b is bent outward.
[0021]
Further, as shown in FIG. 5, the main body housing 12 protects the electric wire W led out from the terminal fitting T inserted into the terminal accommodating chamber 12a through the rear holder 15, and also moves the electric wire W in a laterally extending direction. A connector cover 17 for guiding the user can be attached.
[0022]
Next, the operation of the waterproof connector 10 according to the first embodiment having the above configuration will be described. As shown in FIG. 3, the inner housing 13 is inserted into the hollow portion 12d of the main body housing 12 so that the through hole 13a communicates with the terminal accommodating chamber 12a. Next, the integral rubber plug 14 integrated with the rear holder 15 is inserted into the hollow portion 12d so that the outer peripheral rib 14a is pressed against the inner circumference of the peripheral wall 12c, and the water tightness between the outer rib 14a and the hollow portion 12d is improved. Secure. At this time, since the rib 14a of the integrated rubber plug 14 is pressed inward from the inner peripheral surface of the peripheral wall 12c, the pitch of the through hole 14B located particularly at the outermost periphery is shifted by the influence of the pressing force. Situation. However, since the outermost through-hole 14B bends the insertion distal end outward in anticipation of the pitch shift due to this pressing, as shown in FIGS. The through hole 14B is deformed and becomes straight. This allows the outermost through hole 14B to be arranged in the terminal accommodating chamber 12a without causing a pitch shift, similarly to the other through holes 14b.
[0023]
On the other hand, since the base side of the integrated rubber plug 14 is formed integrally with the rear holder 15, there is no occurrence of a pitch shift of the outermost peripheral through-hole 14B due to the influence of the pressing force due to the diameter reduction of the rib 14a. . In this manner, at the same time when the insertion of the integrated rubber plug 14 into the hollow portion 12d is completed, the outer peripheral portion 15a of the rear holder 15 is fitted over the peripheral wall 12c and is locked and held by the lock portion 16. As a result, from the rear holder 15 to the terminal accommodating chamber 12a, the insertion path of the terminal fitting T communicates linearly through the through holes 15c, 14b (14B), 13a.
[0024]
Next, as shown in FIG. 5, the terminal fitting T of the electric wire W is inserted through the through hole 15c of the rear holder 15. Then, the terminal fitting T is inserted while expanding the through hole 14 b of the integrated rubber plug 14, passes through the through hole 13 a of the inner housing 13, and is inserted into the terminal accommodating chamber 12 a. When the terminal fitting T is inserted, the through holes 13a, 14b (14B), and 15c that reach the terminal accommodating chamber 12a communicate with each other in a straight line without a pitch shift, so that the terminal fitting T can be smoothly inserted. It can be carried out. Then, when the terminal fitting T is inserted to the fixed position, the terminal fitting T is held in a retaining state by the engagement of the locking portion 13b of the inner housing 13 with the locked portion Ta of the terminal fitting T, while the electric wire W It is held in a watertight state by the elastic pressure of the through hole 14b in the diameter reducing direction.
Further, if necessary, the electric wire W drawn out of the main body housing 12 can be protected, and a connector cover 17 for guiding the electric wire W in the drawing direction in the lateral direction can be covered and fixed from the rear side.
[0025]
6 and 7 show a second embodiment of the waterproof connector 20. In this embodiment, of the through holes 25c of the rear holder 25, the through hole 25C located at the outermost periphery is set to have a larger diameter than the others. I have. Further, in the integrated rubber plug 24, the through hole 24 C located at the outermost periphery communicating with the large diameter through hole 25 C of the rear holder 25 of the through hole 24 c is a large diameter hole that is in contact with the base 25 b of the rear holder 25. Is set to Accordingly, the inner surface of the outermost through hole 24C is inclined outward toward the insertion tip side, while the outer surface is not inclined, thereby reducing the diameter of the outermost through hole 24C toward the distal end. Shape. Note that the other configuration is the same as that of the first embodiment, and the same reference numerals are given and the description is omitted.
In the present embodiment, the degree of inclining the inner surface of the through hole 24B outward is determined when the integrated rubber plug 24 is inserted into the cavity 12d and the rib 14a is pressed against the inner peripheral surface of the peripheral wall 12c. The pressure is set to such an extent that it can be deformed inward by the applied pressing force and communicate with each other without a pitch shift.
[0026]
Next, the operation of the second embodiment will be described.
The inner housing 13, the integrated rubber stopper 24, and the rear holder 25 are mounted on the main body housing 12 as in the first embodiment. Then, as shown in FIGS. 7A and 7B, the rib 14a of the integrated rubber plug 24 is pressed against the peripheral wall 12c of the cavity 12d, so that the insertion end side of the integrated rubber plug 24 is inwardly inserted. A pressing force is applied toward. At this time, the innermost side of the outermost through hole 24B is inclined outward in the initial setting, but the through hole 24B is deformed by the inward pressing force accompanying the mounting of the integral rubber plug 24, and the distal end insertion side is deformed. The opening of the through hole 24B communicates with the terminal accommodating chamber 12a without a pitch shift.
[0027]
From this state, the terminal fitting T of the terminal of the electric wire W is inserted from the through hole 25c of the rear holder 25 as in the first embodiment. Then, the terminal fitting T is inserted while expanding the through hole 24b of the integrated rubber plug 24, passes through the through hole 13a of the inner housing 13, and is inserted into the terminal accommodating chamber 12a. Then, when the terminal fitting T is inserted to the fixed position, the terminal fitting T is held in a retaining state by the engagement of the locking portion 13b of the inner housing 13 with the locked portion Ta of the terminal fitting T, while the electric wire W It is held in a watertight state by the elastic pressure of the through hole 24b in the diameter reducing direction.
Further, if necessary, the electric wire W drawn out of the main body housing 12 can be protected, and a connector cover 17 for guiding the electric wire W in the drawing direction in the lateral direction can be covered and fixed from the rear side.
[0028]
8 and 9 show a third embodiment of the waterproof connector 30. In this embodiment, in the integrated rubber stopper 34, of the through holes 34c, the through hole 34C located at the outermost periphery is inserted toward the insertion front end. The diameter is expanded toward. Specifically, the outer surface is inclined outward from the side in contact with the base 35b of the rear holder 35 toward the insertion distal end surface, while the inner surface side is not inclined so that the diameter increases toward the insertion distal end surface. And Note that the other configuration is the same as that of the first embodiment, and the same reference numerals are given and the description is omitted.
In the present embodiment, the degree of inclining the outer surface of the through hole 34B outward is determined when the integrated rubber plug 34 is inserted into the cavity 12d and the rib 14a is pressed against the inner peripheral surface of the peripheral wall 12c. The pressure is set to such an extent that it can be deformed inward by the applied pressing force and communicate with each other without a pitch shift.
[0029]
Next, the operation of the third embodiment will be described.
As in the first and second embodiments, the inner housing 13, the integrated rubber stopper 34, and the rear holder 35 are mounted on the main body housing 12. Then, the rib 14a of the integrated rubber plug 34 is pressed against the peripheral wall 12c of the cavity 12d, so that a pressing force is applied inward to the insertion distal end side of the integrated rubber plug 34. At this time, the outer peripheral side of the outermost through-hole 34B is initially inclined so that the outer surface side is inclined outward and the diameter increases, but the through-hole 34B is deformed by the inward pressing force accompanying the mounting of the integrated rubber plug 34. Thus, the opening of the through hole 34B on the insertion distal end side communicates with the terminal accommodating chamber 12a without a pitch shift.
[0030]
In this state, the terminal fitting T of the terminal of the electric wire W is inserted from the through hole 35c of the rear holder 35 as in the first and second embodiments. Then, the terminal fitting T is inserted while expanding the through hole 24b of the integrated rubber plug 34, passes through the through hole 13a of the inner housing 23, and is inserted into the terminal accommodating chamber 12a. Then, when the terminal fitting T is inserted to the fixed position, the terminal fitting T is held in a retaining state by the engagement of the locking portion 13b of the inner housing 13 with the locked portion Ta of the terminal fitting T, while the electric wire W It is held in a watertight state by the elastic pressure of the through hole 24b in the diameter reducing direction.
Further, if necessary, the electric wire W drawn out of the main body housing 12 can be protected, and a connector cover 17 for guiding the electric wire W in the drawing direction in the lateral direction can be covered and fixed from the rear side.
[0031]
In each of the above embodiments, an example is shown in which the housing has a two-body structure of a main body housing and an inner housing. However, the present invention is similarly applicable to a housing integrated with both. In addition, although the example in which the integrated rubber stopper and the rear holder are integrated by two-color molding has been described, they may be integrated by adhesion and fitting of unevenness. Although the example of the female connector using the female terminal as the terminal fitting has been described, the present invention can be similarly applied to a male connector using the male terminal.
[0032]
【The invention's effect】
As is apparent from the above description, in the present invention, the pitch of the outermost peripheral through-hole is shifted by the influence of the pressing force applied to the outer periphery of the integrated rubber plug when the integrated rubber plug is inserted into the hollow portion of the main body housing. This can be absorbed by the processing such as bending, inclination, and the like provided in the outermost through hole in anticipation of the above. Accordingly, the pitch of the through holes of the integrated rubber plug does not shift, and the operation of inserting the terminal fitting into the terminal receiving chamber through the integrated rubber plug can be performed smoothly.
[Brief description of the drawings]
FIG. 1 is an exploded sectional view of an embodiment of a waterproof connector of the present invention.
2A is a front view of an integrated rubber stopper and a rear holder, and FIG. 2B is a sectional view taken along line XX.
FIG. 3 is a sectional view showing an assembled state of a main body housing, an inner housing, an integrated rubber stopper and a rear holder.
FIG. 4A is a cross-sectional view of a main part of an intermediate stage of inserting an integrated rubber stopper into a hollow portion of a main body housing, and FIG. 4B is a cross-sectional view of a main part in a completely inserted state.
FIG. 5 is a cross-sectional view showing a state where a terminal fitting is inserted into the terminal accommodating chamber.
6A and 6B show a waterproof connector according to a second embodiment, wherein FIG. 6A is a front view of an integrated rubber stopper and a rear holder, and FIG. 6B is a sectional view taken along line XX.
FIG. 7A is a cross-sectional view of a main part of a second embodiment, in which an integrated rubber plug is inserted into a cavity of a main body housing, and FIG. 7B is a state in which a terminal fitting is inserted into a terminal accommodating chamber. It is sectional drawing.
8A and 8B show a waterproof connector according to a third embodiment, wherein FIG. 8A is a front view of an integrated rubber stopper and a rear holder, and FIG. 8B is a sectional view taken along line XX.
FIG. 9A is a cross-sectional view of a main part of the third embodiment, in which an integrated rubber plug is inserted into a cavity of a main body housing, and FIG. 9B is a state in which a terminal fitting is inserted into a terminal accommodating chamber. It is sectional drawing.
10A is a cross-sectional view of a conventional example, and FIG. 10B is a schematic cross-sectional view of a problem of the conventional example.
[Explanation of symbols]
T Terminal fitting Ta Locked portion W Electric wire 10, 20, 30 Waterproof connector 12 Main body housing 12a Terminal accommodating chamber 12c Peripheral wall 12d Cavity 13 Inner housing 13a Through hole 13b Locking portions 14, 24, 34 Integrated rubber plug 14a Rib 14b, 24b, 24B, 34b, 34B Through hole 14c Cut grooves 15, 25, 35 Rear holder 15c, 25c, 35c Through hole

Claims

A main body housing having a cavity surrounded by a peripheral wall on the back side of the plurality of terminal accommodating chambers; a rear holder externally fitted to the peripheral wall of the cavity of the main body housing to close the cavity; An integrated rubber stopper protruding from the inner surface and being pushed into the cavity,
The rear holder and the integral rubber plug are provided with a through hole communicating with the terminal accommodating chamber, and the through hole located at the outermost periphery of the integral rubber stopper bends the insertion tip side outward, and Providing a rib on the outer peripheral surface of the integrated rubber stopper,
When the rib of the integrated rubber plug is pressed against the peripheral wall of the hollow portion, the through-hole bent outwardly by the pressing force applied to the insertion end of the integrated rubber plug is straightened. A waterproof connector characterized by being deformed into a shape and communicating with the terminal accommodating chamber without a pitch shift.

A main body housing having a cavity surrounded by a peripheral wall on the back side of the plurality of terminal accommodating chambers; a rear holder externally fitted to the peripheral wall of the cavity of the main body housing to close the cavity; An integrated rubber stopper protruding from the inner surface and being pushed into the cavity,
A through hole communicating with the terminal accommodating chamber is provided in the rear holder and the integrated rubber stopper, and the through hole located at the outermost periphery of the rear holder has a large diameter, and the through hole is communicated with the large diameter through hole. The through hole located at the outermost periphery of the body rubber plug has a large diameter hole on the rear holder side, and the inner surface side of the through hole is inclined outward toward the insertion end, while the outer surface side of the through hole is not inclined. Reduce the diameter of the through hole, and provide a rib on the outer peripheral surface of the integrated rubber stopper,
When the rib of the integrated rubber plug is pressed against the peripheral wall of the cavity, the through-hole at the outermost peripheral position is deformed by the pressing force applied to the insertion-side distal end of the integrated rubber plug, and the distal-end insertion side is deformed. Wherein the opening of the through hole is communicated with the terminal accommodating chamber without a pitch shift.

A main body housing having a cavity surrounded by a peripheral wall on the back side of the plurality of terminal accommodating chambers; a rear holder externally fitted to the peripheral wall of the cavity of the main body housing to close the cavity; An integrated rubber stopper protruding from the inner surface and being pushed into the cavity,
A through hole communicating with the terminal accommodating chamber is provided in the rear holder and the integrated rubber plug, and the through hole located at the outermost periphery of the integrated rubber plug has an outer surface inclined outward toward the insertion tip. On the other hand, the inner surface side is not inclined, the diameter of the through hole is increased, and a rib is provided on the outer peripheral surface of the integrated rubber plug,
When the rib of the integrated rubber plug is pressed against the peripheral wall of the cavity, the through-hole at the outermost peripheral position is deformed by the pressing force applied to the insertion-side distal end of the integrated rubber plug, and the distal-end insertion side is deformed. Wherein the opening of the through hole is communicated with the terminal accommodating chamber without a pitch shift.

The inner housing is housed in the cavity of the main body housing, and the through hole provided in the inner housing is linearly communicated with the terminal receiving chamber of the main body housing and the through hole of the integrated rubber plug and the rear holder. The waterproof connector according to any one of claims 1 to 3.

The terminal fitting connected to the electric wire end is passed through the rear holder, the integrated rubber plug and the through hole of the inner housing, and the locked part of the terminal fitting is locked by the locking part provided in the through hole of the inner housing. 5. The waterproof connector according to claim 4, wherein the distal end of the terminal fitting is housed in a terminal housing chamber of the main body housing.

The integrated rubber stopper is formed of an elastomer having elasticity, and the rear holder is formed of a synthetic resin having rigidity. The rear holder and the integrated rubber stopper are formed by two-color molding of the elastic resin and the synthetic resin. The waterproof connector according to any one of claims 1 to 5, wherein the waterproof connector is provided integrally.