JP2007026707A

JP2007026707A - Water-proof connector

Info

Publication number: JP2007026707A
Application number: JP2005203050A
Authority: JP
Inventors: Hiroyuki Matsuoka; 宏幸松岡
Original assignee: Sumitomo Wiring Systems Ltd
Current assignee: Sumitomo Wiring Systems Ltd
Priority date: 2005-07-12
Filing date: 2005-07-12
Publication date: 2007-02-01
Anticipated expiration: 2025-07-12
Also published as: JP4491738B2

Abstract

<P>PROBLEM TO BE SOLVED: To suppress deterioration of a sealing performance by installing a seal member protective part at a retaining member. <P>SOLUTION: In a water-proof connector, a shield electric wire 10 is drawn out from the rear face side of a housing. To the housing, a seal member 25 into which the shield electric wire 10 is inserted and which is provided with an electric wire adhering hole 35 adherable to its outer peripheral face is attached. In the housing, the retaining member 26 which can retain the seal member 25 in an anti-fall-off state, and which is provided with an electric wire insertion hole 40 into which the shield electric wire 10 is inserted is built in. At a peripheral edge part of the electric wire insertion hole 40 out of the retaining member 26, the seal member protective part 44 which is protruded backward and which is opposed to the shield electric wire 10 is installed. <P>COPYRIGHT: (C)2007,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.

従来、自動車に用いられるものであって、複数本の電線を一括してシール可能な防水コネクタ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、ハウジングの後面側に、各電線が通される電線密着孔を複数穿設した一括ゴム栓が装着されるとともに、さらにその後側には一括ゴム栓を抜け止め状態に保持するためのゴム栓カバーが組み付けられている。ゴム栓カバーには、電線を挿通可能な電線挿通孔が複数、上記した電線密着孔に連通する形態で貫通形成されている。
特開平７-２４０２５０号公報 Conventionally, what was described in the following patent document 1 as an example of the waterproof connector which is used for a motor vehicle and can seal a plurality of electric wires collectively is known. This is equipped with a batch rubber plug having a plurality of wire contact holes through which each wire is passed on the rear surface side of the housing, and further on the rear side to hold the batch rubber plug in a retaining state. A rubber stopper cover is assembled. A plurality of electric wire insertion holes through which electric wires can be inserted are formed through the rubber plug cover so as to communicate with the aforementioned electric wire contact holes.
JP 7-240250 A

ところで、上記した防水コネクタが車外に露出した場所にて使用される場合には、洗車時などに外部から噴射される高圧な水に晒されることがある。その場合、水が高圧な状態のまま電線と電線挿通孔との間を通って直接一括ゴム栓に対して噴射される可能性があり、そうなると防水コネクタのシール性能が低下することが懸念される。 By the way, when the above-described waterproof connector is used in a place exposed outside the vehicle, it may be exposed to high-pressure water sprayed from the outside at the time of car washing or the like. In that case, there is a possibility that water may be sprayed directly to the batch rubber plug through the gap between the electric wire and the electric wire insertion hole in a high-pressure state, and there is a concern that the sealing performance of the waterproof connector is lowered. .

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、シール性能の低下を抑制することを目的とする。 The present invention has been completed based on the above circumstances, and an object thereof is to suppress a decrease in 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、後面側から電線が引き出されるハウジングには、前記電線が通されるとともにその外周面に対して液密状に密着可能な電線密着孔を備えたシール部材が装着されるとともに、このシール部材を抜け止め状態に保持可能で、且つ前記電線が挿通される電線挿通孔を備えた保持部材が組み付けられているものであって、前記保持部材のうち前記電線挿通孔の周縁部には、後方へ突出して前記電線と対向するシール部材保護部が設けられている構成としたところに特徴を有する。 As a means for achieving the above object, the invention of claim 1 is directed to an electric wire that can pass through the electric wire through a housing from which the electric wire is drawn out from the rear surface side and can be in close contact with the outer peripheral surface in a liquid-tight manner. A seal member provided with a close-contact hole is mounted, the seal member can be held in a retaining state, and a holding member provided with an electric wire insertion hole through which the electric wire is inserted is assembled. The holding member is characterized in that a peripheral portion of the electric wire insertion hole is provided with a seal member protection portion that protrudes rearward and faces the electric wire.

請求項２の発明は、請求項１に記載のものにおいて、前記シール部材保護部は、前記電線を全周にわたって取り囲む無端環状に形成されているところに特徴を有する。 The invention of claim 2 is characterized in that, in the invention of claim 1, the seal member protection part is formed in an endless annular shape surrounding the electric wire over the entire circumference.

請求項３の発明は、請求項２に記載のものにおいて、前記ハウジングの後面側から前記電線が複数本引き出されるとともに、前記電線密着孔及び前記電線挿通孔が共に複数ずつ設けられており、前記シール部材保護部は、前記各電線を個別に取り囲むよう形成され、且つ隣り合うシール部材保護部同士が連結されるとともに電線間の仕切り部分が共用化されているところに特徴を有する。 The invention according to claim 3 is the one according to claim 2, wherein a plurality of the electric wires are drawn out from the rear surface side of the housing, and a plurality of the electric wire contact holes and the electric wire insertion holes are provided. The seal member protection portion is characterized in that it is formed so as to individually surround each of the electric wires, and adjacent seal member protection portions are connected to each other and a partition portion between the electric wires is shared.

請求項４の発明は、請求項１ないし請求項３のいずれかに記載のものにおいて、前記シール部材保護部と前記電線との間には、弾縮変形可能な弾縮部材が介設されているところに特徴を有する。 According to a fourth aspect of the present invention, there is provided the elastic member according to any one of the first to third aspects, wherein an elastic member capable of elastic deformation is interposed between the seal member protection portion and the electric wire. It has a characteristic where it exists.

＜請求項１の発明＞
例えば外部から高圧な水が噴射された場合でも、その水は、保持部材のシール部材保護部に当たることで、電線挿通孔と電線との間に浸入し難くなっており、また浸入したとしても十分に減勢されているので、高圧な状態のままシール部材に噴射されるような事態が回避される。これにより、シール性能の低下を抑制することができる。 <Invention of Claim 1>
For example, even when high-pressure water is sprayed from the outside, the water hits the seal member protection part of the holding member, making it difficult for the water to enter between the wire insertion hole and the wire. Therefore, it is possible to avoid a situation in which the high pressure state is injected into the seal member. Thereby, the fall of sealing performance can be suppressed.

＜請求項２の発明＞
周方向についてどの方向から高圧な水が噴射された場合でも、電線を全周にわたって取り囲む無端環状に形成されたシール部材保護部によりシール性能の低下を抑制できる。 <Invention of Claim 2>
Even when high-pressure water is jetted from any direction in the circumferential direction, a decrease in sealing performance can be suppressed by the endless annular seal member that surrounds the electric wire over the entire circumference.

＜請求項３の発明＞
隣り合うシール部材保護部同士が連結されるとともに各電線間の仕切り部分が共用化されているので、仮に各シール部材保護部を分離して設けた場合と比較すると、省スペース化を図ることができる。 <Invention of Claim 3>
Adjacent seal member protection parts are connected to each other and the partition part between the electric wires is shared, so that it is possible to save space compared to the case where the seal member protection parts are provided separately. it can.

＜請求項４の発明＞
例えば電線が軸線方向と交差する向きに引っ張られた場合でも、弾縮部材によって受けられるから、シール部材保護部との間で摩擦が生じるのを回避することができる。 <Invention of Claim 4>
For example, even when the electric wire is pulled in a direction crossing the axial direction, it is received by the elastic member, so that it is possible to avoid the friction with the seal member protection part.

＜実施形態１＞
本発明の実施形態１を図１ないし図６によって説明する。この実施形態１では、自動車に搭載されるものであって、後面側から複数本（２本）のシールド電線１０が引き出される防水コネクタ２０を例示する。なお、以下では、ハウジング２４に対する保持部材２６の取り付け方向（図１における左方）を前方、その反対方向を後方とし、また上下方向については図１を基準とする。 <Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. In the first embodiment, a waterproof connector 20 that is mounted on an automobile and from which a plurality of (two) shielded electric wires 10 are drawn out from the rear side is illustrated. In the following, the attachment direction of the holding member 26 to the housing 24 (left side in FIG. 1) is the front, the opposite direction is the rear, and the vertical direction is based on FIG.

防水コネクタ２０は、大まかには、図１に示すように、シールド電線１０の芯線１１の端末に接続された一対の雌型の端子金具２１と、シールド電線１０のシールド層１３に接続された一対の接続金具２２と、接続金具２２に対して接触可能なシールドシェル２３と、端子金具２１やシールドシェル２３などを収容可能なハウジング２４と、ハウジング２４に装着されるとともにシールド電線１０をシール可能なシール部材２５と、ハウジング２４に対してシール部材２５を抜け止め状態に保持可能な保持部材２６とを備える。 As shown in FIG. 1, the waterproof connector 20 is roughly a pair of female terminal fittings 21 connected to the end of the core wire 11 of the shielded electric wire 10 and a pair of terminals connected to the shield layer 13 of the shielded electric wire 10. The connection fitting 22, the shield shell 23 that can contact the connection fitting 22, the housing 24 that can accommodate the terminal fitting 21, the shield shell 23, and the like, and the shield 24 that is attached to the housing 24 and can be sealed. A seal member 25 and a holding member 26 that can hold the seal member 25 in a state of being prevented from being detached from the housing 24 are provided.

端子金具２１は、相手端子と接続可能な端子接続部２１ａと、シールド電線１０の端末部分に圧着接続可能な電線接続部２１ｂとを前後に連結した構成とされる。端子接続部２１ａは、前後に開口した略箱型をなしており、その下面側にはハウジング２４のランス３４が係止可能な係止孔が設けられている。電線接続部２１ｂは、シールド電線１０のうち先端側で露出した芯線１１にかしめ付けられる一対のかしめ片と、芯線１１の外側を覆う内皮１２にかしめ付けられる一対のかしめ片とを前後に備える。 The terminal fitting 21 has a configuration in which a terminal connection portion 21a that can be connected to a mating terminal and a wire connection portion 21b that can be crimped to the terminal portion of the shielded electric wire 10 are connected in the front-rear direction. The terminal connection portion 21a has a substantially box shape that opens in the front-rear direction, and a locking hole in which the lance 34 of the housing 24 can be locked is provided on the lower surface side. The wire connecting portion 21 b includes a pair of caulking pieces that are caulked to the core wire 11 exposed on the distal end side of the shielded electric wire 10 and a pair of caulking pieces that are caulked to the inner skin 12 that covers the outside of the core wire 11.

接続金具２２は、略円筒状に形成されるとともに、シールド電線１０に対して端子金具２１よりも後方位置に固定されている。接続金具２２の前部は、シールド電線１０のうち外皮１４側に折り返された状態のシールド層（編組線）１３に対して接続される。接続金具２２の後部は、前部よりも拡径されるとともに、その外周面がシールドシェル２３に対して接続される。シールドシェル２３は、接続金具２２よりも一回り大きな略角筒状をなすとともに、その後端部には接続金具２２に対して弾性接触可能な複数本の弾性接触片２３ａが折り返し形成されている。 The connection fitting 22 is formed in a substantially cylindrical shape and is fixed to the shielded electric wire 10 at a position behind the terminal fitting 21. The front portion of the connection fitting 22 is connected to the shield layer (braided wire) 13 that is folded back to the outer skin 14 side of the shielded electric wire 10. The rear part of the connection fitting 22 has a diameter larger than that of the front part, and the outer peripheral surface thereof is connected to the shield shell 23. The shield shell 23 has a substantially rectangular tube shape that is slightly larger than the connection fitting 22, and a plurality of elastic contact pieces 23 a that can be elastically contacted with the connection fitting 22 are folded back at the rear end portion.

ハウジング２４は、合成樹脂製とされており、略ブロック状をなす本体部２７と、本体部２７の前半部分を取り囲む略角筒状の外筒部２８とから構成されている。本体部２７と外筒部２８との間の空間には、前方から図示しない相手コネクタが嵌合可能とされている。本体部２７の上面には、相手コネクタを嵌合状態に保持するためのロックアーム２９が設けられている。また本体部２７のうちロックアーム２９の直前位置における外周面には、相手コネクタに対して密着することで両コネクタ間をシール可能なシールリング３０が装着されている。 The housing 24 is made of a synthetic resin, and includes a main body portion 27 having a substantially block shape and an outer tube portion 28 having a substantially rectangular tube shape surrounding the front half portion of the main body portion 27. A mating connector (not shown) can be fitted into the space between the main body 27 and the outer cylinder 28 from the front. On the upper surface of the main body 27, a lock arm 29 for holding the mating connector in a fitted state is provided. A seal ring 30 is mounted on the outer peripheral surface of the main body 27 immediately before the lock arm 29 so as to seal between the two connectors by being in close contact with the mating connector.

本体部２７には、前側から順に、端子金具２１を個別に収容可能な端子収容室３１と、シールドシェル２３や接続金具２２を収容可能なシールド部品収容室３２と、シール部材２５を収容可能なシール部材収容室３３とが並んで設けられている。これら端子収容室３１、シールド部品収容室３２及びシール部材収容室３３は、互いに連通して形成されている。端子収容室３１は、幅方向に一対並んで配されているとともに、各端子収容室３１の前部の下面側には、端子金具２１を抜け止め状態に保持するめの片持ち状のランス３４が設けられている。シール部材収容室３３は、後方外部へ開口する形態とされるとともに、前側のシールド部品収容室３２よりも一回り大きく形成されており、その段差部分３３ａによって後方から装着されるシール部材２５を前止まり可能とされる。 In the main body 27, a terminal accommodating chamber 31 that can accommodate the terminal fittings 21 individually, a shield component accommodating chamber 32 that can accommodate the shield shell 23 and the connecting fitting 22, and the seal member 25 can be accommodated in this order from the front side. A seal member accommodation chamber 33 is provided side by side. The terminal accommodating chamber 31, the shield component accommodating chamber 32, and the seal member accommodating chamber 33 are formed in communication with each other. A pair of terminal accommodating chambers 31 are arranged side by side in the width direction, and a cantilever lance 34 for holding the terminal fitting 21 in a state of retaining is provided on the lower surface side of the front portion of each terminal accommodating chamber 31. Is provided. The seal member accommodation chamber 33 is configured to open to the rear outside and is formed to be slightly larger than the front shield component accommodation chamber 32, and the stepped portion 33a allows the seal member 25 mounted from the rear to the front. It can be stopped.

シール部材２５は、弾縮変形可能なゴム製とされており、全体がやや横長な略ブロック状に形成されている。シール部材２５には、各シールド電線１０が個別に通されるとともにその外皮１４の外周面に対して密着可能な電線密着孔３５が一対、幅方向に並んで設けられている。各電線密着孔３５の内周面には、内側へ膨出するリップ３６が前後に２条ずつ並んで設けられており、これらが各シールド電線１０の外周面に対して液密状に密着可能とされる。この電線密着孔３５の最小内径は、シールド電線１０の外径よりも小さく設定される。またシール部材２５の外周面には、外側へ膨出するリップ３７が前後に３条並んで設けられ、これがシール部材収容室３３の内周面に対して液密状に密着可能とされる。 The seal member 25 is made of rubber that can be elastically deformed, and the whole is formed in a substantially block shape that is slightly horizontally long. The seal member 25 is provided with a pair of electric wire contact holes 35 which are individually passed through the shielded electric wires 10 and can be in close contact with the outer peripheral surface of the outer skin 14 in the width direction. On the inner peripheral surface of each electric wire contact hole 35, two lips 36 bulging inward are provided side by side in front and rear, and these can be in liquid-tight contact with the outer peripheral surface of each shielded electric wire 10 It is said. The minimum inner diameter of the wire contact hole 35 is set smaller than the outer diameter of the shielded electric wire 10. Further, on the outer peripheral surface of the seal member 25, three lips 37 bulging outward are arranged in the front-rear direction so that the lip 37 can be in liquid-tight contact with the inner peripheral surface of the seal member housing chamber 33.

保持部材２６は、合成樹脂製とされており、全体として前方へ開口した略箱型に形成されている。保持部材２６は、本体部２７における後半部分に対して外嵌可能な略角筒状をなす筒部３８と、筒部３８の後端側を塞ぐとともに本体部２７やシール部材２５の後端面に当接可能な抜け止め部３９とからなる。 The holding member 26 is made of a synthetic resin, and is formed in a substantially box shape that opens forward as a whole. The holding member 26 closes the rear end side of the cylindrical portion 38 and the cylindrical portion 38 that forms a substantially rectangular tube shape that can be fitted to the rear half portion of the main body portion 27, and is attached to the rear end surface of the main body portion 27 and the seal member 25. It consists of a retaining part 39 that can come into contact.

抜け止め部３９には、図１及び図３に示すように、シールド電線１０を挿通可能な電線挿通孔４０が前後に貫通して設けられている。電線挿通孔４０は、一対幅方向に並んで配されるとともに、保持部材２６をハウジング２４に対して組み付けた状態では、シール部材２５の両電線密着孔３５に対して連通されるようになっている。この電線挿通孔４０の内径は、シールド電線１０の外径よりも少し大きくなる設定とされる。 As shown in FIGS. 1 and 3, the retaining portion 39 is provided with a wire insertion hole 40 through which the shielded wire 10 can be inserted so as to penetrate in the front-rear direction. The electric wire insertion holes 40 are arranged side by side in the pair of width directions, and communicate with the both electric wire contact holes 35 of the seal member 25 when the holding member 26 is assembled to the housing 24. Yes. The inner diameter of the electric wire insertion hole 40 is set to be slightly larger than the outer diameter of the shielded electric wire 10.

ここで、ハウジング２４に対する保持部材２６のロック構造について説明する。保持部材２６の筒部３８における両側部には、図２及び図３に示すように、前方へ開放するスリットを入れることで片持ち状のロック片４１が一対形成されている。これに対し、本体部２７のうち外筒部２８により覆われない後半部分の両外側面には、ロック片４１に対応する位置に一対の被ロック部４２が設けられている。そして、各ロック片４１には、後方へ開口するロック溝４３が形成されており、このロック溝４３の周縁における前縁が上記した被ロック部４２の前面に対して係止されることで、保持部材２６をハウジング２４に対して保持可能とされている（図６参照）。この保持状態では、抜け止め部３９の前端面がシール部材２５の後端面に対して当接または近接する位置に配されることで、シール部材２５の抜け止めが図られるようになっている（図５参照）。またこの状態では、抜け止め部３９によりシール部材２５の後端面の概ね全域（両電線挿通孔４０やロック溝４３の開口領域を除いた全領域）が覆われることになる。 Here, the lock structure of the holding member 26 with respect to the housing 24 will be described. As shown in FIGS. 2 and 3, a pair of cantilevered locking pieces 41 are formed on both sides of the cylindrical portion 38 of the holding member 26 by inserting slits that open forward. On the other hand, a pair of locked portions 42 are provided at positions corresponding to the lock pieces 41 on both outer side surfaces of the latter half portion of the main body portion 27 not covered by the outer cylinder portion 28. Each lock piece 41 is formed with a lock groove 43 that opens to the rear, and the front edge of the periphery of the lock groove 43 is engaged with the front surface of the locked portion 42 described above. The holding member 26 can be held with respect to the housing 24 (see FIG. 6). In this holding state, the seal member 25 is prevented from coming off by being arranged at a position where the front end surface of the retaining portion 39 is in contact with or close to the rear end surface of the seal member 25 ( (See FIG. 5). In this state, the retaining portion 39 covers almost the entire region of the rear end surface of the seal member 25 (the entire region excluding the opening regions of both the wire insertion holes 40 and the lock grooves 43).

さて、この保持部材２６には、ハウジング２４に組み付けられた状態においてシール部材２５を保護するためのシール部材保護部４４が設けられている。シール部材保護部４４は、図１及び図４に示すように、抜け止め部３９の後端面における各電線挿通孔４０の周縁部から後方へ突出するとともに、内側のシールド電線１０と対向するよう形成されている。シール部材保護部４４は、各電線挿通孔４０に対応して一対設けられるとともに、各シールド電線１０を個別に、全周にわたって取り囲む無端環状に形成されている。シール部材保護部４４の内周面は、電線挿通孔４０の内周面と段差無く連続する（面一状をなす）とともに、シールド電線１０の外周面に沿った円形状に形成されている。またシール部材保護部４４の後方への突出寸法は、抜け止め部３９の厚み寸法とほぼ同じかそれよりも大きく設定されている。 Now, the holding member 26 is provided with a seal member protection portion 44 for protecting the seal member 25 in a state assembled to the housing 24. As shown in FIGS. 1 and 4, the seal member protection portion 44 is formed so as to protrude rearward from the peripheral portion of each wire insertion hole 40 on the rear end surface of the retaining portion 39 and to face the inner shield wire 10. Has been. A pair of seal member protection portions 44 are provided corresponding to each wire insertion hole 40 and are formed in an endless annular shape that individually surrounds each shielded wire 10 over the entire circumference. The inner peripheral surface of the seal member protection part 44 is continuous with the inner peripheral surface of the electric wire insertion hole 40 without a step (forms a flat surface) and is formed in a circular shape along the outer peripheral surface of the shielded electric wire 10. Further, the rearward projecting dimension of the seal member protecting part 44 is set to be substantially the same as or larger than the thickness dimension of the retaining part 39.

隣り合う両シール部材保護部４４は、互いに連結されるとともに、隣り合うシールド電線１０同士を仕切る仕切り部分４４ａが共用化されている。従って、仮に両シール部材保護部４４同士を分離した配置とした場合と比較すると、幅方向についての全体の配設スペースが小さくなっている。この仕切り部分４４ａの厚み寸法（両電線挿通孔４０間の距離）は、シール部材保護部４４の厚み寸法とほぼ同じかそれよりも小さく設定されている。また、両シール部材保護部４４は、複数本（２本）のシールド電線１０の周りを一括して取り囲む一括包囲部分４４ｂと、一括包囲部分４４ｂの中央部を横切るとともに隣り合うシールド電線１０間を仕切る仕切り部分４４ａとから構成されていると言える。 The adjacent seal member protection portions 44 are connected to each other, and a partition portion 44a that partitions adjacent shield wires 10 is shared. Therefore, as compared with the case where both the seal member protection portions 44 are separated from each other, the entire arrangement space in the width direction is reduced. The thickness dimension of the partition portion 44a (distance between both the wire insertion holes 40) is set to be substantially the same as or smaller than the thickness dimension of the seal member protection portion 44. Further, both seal member protection portions 44 cross between a central enclosure portion 44b that collectively surrounds a plurality (two) of shielded electric wires 10 and a central portion of the collective enclosure portion 44b and between adjacent shielded electric wires 10. It can be said that it consists of the partition part 44a which partitions off.

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。上記した防水コネクタ２０を組み立てるには、ハウジング２４に対してシールリング３０、シールドシェル２３及びシール部材２５を取り付けるとともに、各シールド電線１０の端末に端子金具２１及び接続金具２２を接続・固定しておく。その状態で端子金具２１及び接続金具２２をハウジング２４内に挿入する。挿入過程では、端子金具２１及び接続金具２２がシール部材２５の電線密着孔３５を押し拡げつつ前方のシールド部品収容室３２や端子収容室３１内へと進入される。そして、正規深さに至ると、図１に示すように、端子金具２１の係止孔に対してランス３４が係止することでその抜け止めが図られるとともに、接続金具２２の後部に対してシールドシェル２３の弾性接触片２３ａが弾性接触される。 This embodiment has the structure as described above, and the operation thereof will be described subsequently. To assemble the waterproof connector 20, the seal ring 30, the shield shell 23, and the seal member 25 are attached to the housing 24, and the terminal fitting 21 and the connection fitting 22 are connected and fixed to the end of each shielded electric wire 10. deep. In this state, the terminal fitting 21 and the connection fitting 22 are inserted into the housing 24. In the insertion process, the terminal fitting 21 and the connecting fitting 22 are advanced into the front shield component accommodation chamber 32 and the terminal accommodation chamber 31 while expanding the wire contact hole 35 of the seal member 25. When reaching the normal depth, as shown in FIG. 1, the lance 34 is locked to the locking hole of the terminal fitting 21 so that the lance 34 is prevented from coming off, and the rear end of the connecting fitting 22. The elastic contact piece 23a of the shield shell 23 is brought into elastic contact.

その後、保持部材２６をハウジング２４に対して組み付ける作業が行われる。なお保持部材２６の両電線挿通孔４０には予め両シールド電線１０がそれぞれ挿通されている。保持部材２６の筒部３８を本体部２７の後半部分に対して後方から外嵌すると、ロック片４１が被ロック部４２に対して乗り上げることで一旦外側へ開きつつ弾性変形される。そして、保持部材２６が正規位置まで押し込まれると、図６に示すように、ロック片４１が被ロック部４２を乗り越えるとともに弾性復帰してロック溝４３の前縁が被ロック部４２の前面に対して係止することで、保持部材２６がハウジング２４に対して脱落不能な状態に保持される。 Thereafter, an operation of assembling the holding member 26 to the housing 24 is performed. Both shielded electric wires 10 are inserted in advance through the electric wire insertion holes 40 of the holding member 26. When the cylindrical portion 38 of the holding member 26 is externally fitted to the rear half portion of the main body portion 27 from behind, the lock piece 41 rides on the locked portion 42 and is elastically deformed while opening outward. Then, when the holding member 26 is pushed to the proper position, the lock piece 41 gets over the locked portion 42 and elastically recovers as shown in FIG. 6 so that the front edge of the lock groove 43 is against the front surface of the locked portion 42. Thus, the holding member 26 is held in a state in which it cannot be detached from the housing 24.

この状態では、図５に示すように、保持部材２６の抜け止め部３９がシール部材収容室３３の開口部分を塞ぐとともに、シール部材２５の後端面に対して当接または近接した位置に配されることで、シール部材２５がハウジング２４から脱落するのが防止される。またこの状態では、シールド電線１０の外周面に対して電線密着孔３５内の各リップ３６が液密状に密着するとともに、シール部材２５の外周側の各リップ３７がシール部材収容室３３の内周面に対して液密状に密着することで、前方のシールド部品収容室３２や端子収容室３１内に外部から水などが浸入するのが防止されるようになっている。 In this state, as shown in FIG. 5, the retaining portion 39 of the holding member 26 closes the opening portion of the seal member housing chamber 33 and is disposed at a position in contact with or close to the rear end surface of the seal member 25. This prevents the seal member 25 from falling off the housing 24. Further, in this state, each lip 36 in the wire contact hole 35 is in liquid-tight contact with the outer peripheral surface of the shielded electric wire 10, and each lip 37 on the outer peripheral side of the seal member 25 is in the seal member accommodating chamber 33. By adhering in a liquid-tight manner to the peripheral surface, water or the like is prevented from entering the front shield part accommodation chamber 32 or the terminal accommodation chamber 31 from the outside.

上記のようにして組み立てられた防水コネクタ２０は、図示しない相手側コネクタと嵌合接続された状態で自動車に搭載される。このとき、防水コネクタ２０は、車外に露出した場所において使用される場合があり、その場合は洗車時などに外部から噴射される高圧な水に晒されるおそれがある。この高圧な水がシール部材２５に対して直接噴射されると、シール部材２５が変形するなどしてシールド電線１０に対する密着状態が悪化し、シール性能が低下することが懸念される。 The waterproof connector 20 assembled as described above is mounted on an automobile in a state of being fitted and connected to a mating connector (not shown). At this time, the waterproof connector 20 may be used in a place exposed outside the vehicle, and in that case, the waterproof connector 20 may be exposed to high-pressure water sprayed from the outside at the time of car washing or the like. If this high-pressure water is directly sprayed onto the sealing member 25, the sealing member 25 may be deformed and the close contact state with respect to the shielded electric wire 10 may be deteriorated, and the sealing performance may be deteriorated.

ところが、本実施形態では、保持部材２６における電線密着孔３５の周縁部に後方へ突出するシール部材保護部４４を設けるようにしたので、外部から噴射される高圧な水は、シール部材保護部４４に対して当たることで、電線挿通孔４０とシールド電線１０との間に浸入し難くなっており、また仮に浸入したとしてもシール部材２５に到達するまでには十分に減勢されることになるので、水が高圧な状態のままシール部材２５に噴射されるような事態を回避することができる。これにより、高圧な水が噴射された場合でもシール部材２５のシール性能が低下するのを抑制することができる。またシールド電線１０がその軸線方向と交差する向きに曲げられた状態では、シールド電線１０と電線挿通孔４０との隙間が部分的に大きくなるが、上記したようにシール部材保護部４４によって高圧な状態のまま水がシール部材２５に対して噴射されるのが回避されるので、十分なシール性能が保たれる。 However, in the present embodiment, since the seal member protection portion 44 that protrudes rearward is provided at the peripheral portion of the wire contact hole 35 in the holding member 26, the high-pressure water sprayed from the outside is the seal member protection portion 44. , It is difficult to enter between the electric wire insertion hole 40 and the shielded electric wire 10, and even if it enters, it will be sufficiently reduced before reaching the seal member 25. Therefore, it is possible to avoid a situation in which water is injected to the seal member 25 in a high pressure state. Thereby, even when high pressure water is injected, it can suppress that the sealing performance of the sealing member 25 falls. In addition, in the state where the shielded electric wire 10 is bent in a direction intersecting the axial direction, the gap between the shielded electric wire 10 and the electric wire insertion hole 40 is partially increased. Since it is avoided that water is jetted to the sealing member 25 in the state, a sufficient sealing performance is maintained.

以上説明したように本実施形態によれば、保持部材２６のうち電線挿通孔４０の周縁部に後方へ突出するとともにシールド電線１０と対向するシール部材保護部４４を設けるようにしたから、例えば外部から高圧な水が噴射された場合でも、その水はシール部材保護部４４に当たることで、電線挿通孔４０とシールド電線１０との間に浸入し難くなっており、また浸入したとしても十分に減勢されるので、高圧な状態のままシール部材２５に噴射されるような事態が回避される。これにより、シール性能の低下を抑制することができる。 As described above, according to the present embodiment, since the seal member protection portion 44 that protrudes rearward and faces the shielded electric wire 10 is provided at the peripheral edge portion of the wire insertion hole 40 in the holding member 26, for example, external Even when high-pressure water is sprayed from the water, the water hits the seal member protection portion 44, so that it is difficult for the water to enter between the wire insertion hole 40 and the shielded electric wire 10, and even if the water enters, the water is sufficiently reduced. Therefore, it is possible to avoid a situation where the high pressure state is injected into the seal member 25. Thereby, the fall of sealing performance can be suppressed.

また、シール部材保護部４４がシールド電線１０を全周にわたって取り囲む無端環状に形成されているから、周方向についてどの方向から高圧な水が噴射された場合でも、シール部材保護部４４によりシール性能の低下を抑制できる。 Moreover, since the seal member protection part 44 is formed in an endless annular shape that surrounds the shielded electric wire 10 over the entire circumference, the seal member protection part 44 has a sealing performance regardless of the direction in which the high-pressure water is injected from any direction. Reduction can be suppressed.

また、シール部材保護部４４は、各シールド電線１０を個別に取り囲むよう形成され、且つ隣り合うシール部材保護部４４同士が連結されるとともに各シールド電線１０間の仕切り部分４４ａが共用化されているので、仮に各シール部材保護部が互いに分離して設けられた場合と比較すると、省スペース化を図ることができ、もって防水コネクタ２０の小型化に寄与できる。 Moreover, the seal member protection part 44 is formed so as to individually surround each shielded electric wire 10, and adjacent seal member protection parts 44 are connected to each other and a partition portion 44 a between the shielded electric wires 10 is shared. Therefore, compared with the case where each sealing member protection part is provided separately from each other, it is possible to save space and thus contribute to downsizing of the waterproof connector 20.

＜実施形態２＞
本発明の実施形態２を図７または図８によって説明する。この実施形態２では、保持部材２６の電線挿通孔４０に弾縮部材５０を設けた場合を示す。としたものを示す。なおこの実施形態２では、上記した実施形態１と同様の構造、作用及び効果について重複する説明は省略する。 <Embodiment 2>
A second embodiment of the present invention will be described with reference to FIG. 7 or FIG. In this Embodiment 2, the case where the elastic member 50 is provided in the electric wire insertion hole 40 of the holding member 26 is shown. Is shown. In the second embodiment, redundant description of the same structure, operation, and effects as those in the first embodiment will be omitted.

保持部材２６における両シール部材保護部４４の内周面には、図７及び図８に示すように、ゴム製で弾縮変形可能な弾縮部材５０がそれぞれ設けられている。この弾縮部材５０は、保持部材２６に対して二色成形により一体的に設けられている。この弾縮部材５０は、円筒状をなすとともに、シール部材保護部４４の後端位置から電線挿通孔４０の前端位置にまで延びる形態とされている。この弾縮部材５０は、保持部材２６をハウジング２４に対して組み付けた状態では、シール部材保護部４４及び電線挿通孔４０とその内側に通されるシールド電線１０との間に介在する。また弾縮部材５０の内周面は、全長にわたって段差が無い形状とされる。 As shown in FIGS. 7 and 8, elastic members 50 that are elastically deformable and elastically deformed are provided on the inner peripheral surfaces of the seal member protection portions 44 in the holding member 26. The elastic member 50 is provided integrally with the holding member 26 by two-color molding. The elastic member 50 has a cylindrical shape and is configured to extend from the rear end position of the seal member protection portion 44 to the front end position of the electric wire insertion hole 40. In a state where the holding member 26 is assembled to the housing 24, the elastic member 50 is interposed between the seal member protection portion 44 and the wire insertion hole 40 and the shielded electric wire 10 passed through the inside thereof. Further, the inner peripheral surface of the elastic member 50 has a shape having no step over the entire length.

弾縮部材５０の厚み寸法は、シールド電線１０とシール部材保護部４４及び電線挿通孔４０との間の隙間とほぼ同じか、それよりも少し大きくなる設定とされる。従って、組み付け状態では、弾縮部材５０がシールド電線１０の外周面に対して当接（密着）または近接して配されるとともに、シール部材保護部４４及び電線挿通孔４０とシールド電線１０との間の隙間は、弾縮部材５０によりほぼ完全に閉塞される。 The thickness dimension of the elastic member 50 is set to be substantially the same as or slightly larger than the gap between the shielded electric wire 10, the seal member protection part 44 and the electric wire insertion hole 40. Therefore, in the assembled state, the elastic member 50 is arranged in contact (close contact) with or close to the outer peripheral surface of the shielded electric wire 10, and the seal member protection part 44, the electric wire insertion hole 40, and the shielded electric wire 10. The gap between them is almost completely closed by the elastic member 50.

組み付け状態において、例えばシールド電線１０がその軸線方向と交差する向きに引っ張られた場合でも、シールド電線１０は、合成樹脂製の保持部材２６よりも軟質で弾縮変形可能な弾縮部材５０によって受けられるので、シール部材保護部４４との間で摩擦が生じるのが回避される。これにより、シールド電線１０がシール部材保護部４４に擦れて切れなどが生じるのが防止できる。 In the assembled state, for example, even when the shielded electric wire 10 is pulled in a direction crossing the axial direction, the shielded electric wire 10 is received by the elastic member 50 that is softer than the synthetic resin holding member 26 and can be elastically deformed. Therefore, it is possible to avoid the occurrence of friction with the seal member protection part 44. Thereby, it can prevent that the shield electric wire 10 rubs against the sealing member protection part 44, and a cut etc. arise.

＜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、さらに、下記以外にも要旨を逸脱しない範囲内で種々変更して実施することができる。
（１）上記した各実施形態では、シール部材保護部が電線挿通孔と内周面が面一状をなす位置に設けられたものを例示したが、シール部材保護部の内周面が電線挿通孔の内周面に対して径方向について内側または外側にずれた位置になるような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, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) In each of the above-described embodiments, the seal member protection portion is illustrated in a position where the electric wire insertion hole and the inner peripheral surface are flush with each other, but the inner peripheral surface of the seal member protection portion is the electric wire insertion. The present invention includes a position that is shifted inward or outward in the radial direction with respect to the inner peripheral surface of the hole.

（２）上記した各実施形態では、隣り合うシール部材保護部同士が連結されたものを例示したが、各シール部材保護部が互いに分離して設けられたものも本発明に含まれる。
（３）上記した各実施形態では、各シール部材保護部が個別に電線を取り囲む形態のものを例示したが、１つのシール部材保護部により複数の電線を一括して取り囲む形態のもの（上記した各実施形態における仕切り部分を除去し、一括包囲部分のみとしたもの）も本発明に含まれる。また保持部材の電線挿通孔が複数本の電線をまとめて挿通できる大きさに形成されたものも本発明に含まれる。 (2) In each of the above-described embodiments, the seal member protection portions adjacent to each other are illustrated as examples. However, the present invention includes a configuration in which the seal member protection portions are provided separately from each other.
(3) In each of the above-described embodiments, the example in which each seal member protection part individually surrounds the electric wires is illustrated, but the form in which a plurality of electric wires are collectively surrounded by one seal member protection part (described above) The partition part in each embodiment is removed and only the collectively enclosed part is included in the present invention. Moreover, what formed the magnitude | size in which the electric wire penetration hole of a holding member can penetrate a several electric wire collectively is also contained in this invention.

（４）上記した各実施形態では、シール部材保護部が無端環状をなすものを例示したが、電線に対して周方向について部分的に対向する形態のもの、つまり有端状のものも本発明に含まれる。
（５）上記した各実施形態では、２本のシールド電線を備えたものを例示したが、１本または３本以上備えたものも本発明に含まれる。
（６）上記した実施形態２では、弾縮部材が保持部材に対して二色成形により設けられた場合を示したが、例えば接着剤により弾縮部材を保持部材に対して一体化させてもよい。また弾縮部材を電線側に一体化させることも可能であり、さらには弾縮部材を保持部材や電線とは別体として組み付けるようにしてもよい。なお弾縮部材の形状や厚み寸法は、任意に変更可能である。 (4) In each of the above-described embodiments, the seal member protection portion is illustrated as having an endless annular shape. However, a configuration in which the seal member protection portion partially opposes the electric wire in the circumferential direction, that is, an end shape is also included in the present invention. include.
(5) In each of the above-described embodiments, the one provided with two shielded electric wires has been exemplified, but one provided with three or more wires is also included in the present invention.
(6) In the above-described embodiment 2, the case where the elastic member is provided by the two-color molding on the holding member has been shown. However, even if the elastic member is integrated with the holding member by an adhesive, for example. Good. Further, the elastic member can be integrated on the electric wire side, and the elastic member may be assembled separately from the holding member and the electric wire. The shape and thickness dimension of the elastic member can be arbitrarily changed.

（７）上記した各実施形態では、シールド電線の端末に設けられたものを例示したが、芯線の周りを絶縁被覆により覆った形態の被覆電線の端末に設けられたものも本発明に含まれる。その場合、接続金具やシールドシェルやシールド部品収容室に関して省略することができる。
（８）上記した各実施形態では、雌型の端子金具を備えた雌型の防水コネクタを例示したが、雄型の端子金具を備えた雄型の防水コネクタにも本発明は適用可能である。 (7) In each of the above embodiments, the one provided at the end of the shielded electric wire has been exemplified, but the one provided at the end of the covered electric wire in the form in which the periphery of the core wire is covered with an insulating coating is also included in the present invention. . In that case, it is omissible regarding a connection metal fitting, a shield shell, and a shield component storage chamber.
(8) In each of the above-described embodiments, the female waterproof connector provided with the female terminal fitting has been exemplified. However, the present invention can also be applied to a male waterproof connector provided with the male terminal fitting. .

本発明の実施形態１に係る防水コネクタにおいてハウジングに保持部材を組み付ける前の状態を示す側断面図The sectional side view which shows the state before attaching a holding member to a housing in the waterproof connector which concerns on Embodiment 1 of this invention. ハウジングに保持部材を組み付ける前の状態を示す側面図Side view showing a state before the holding member is assembled to the housing 保持部材の正面図Front view of holding member 保持部材の背面図Rear view of holding member ハウジングに保持部材を組み付けた状態を示す側断面図Side sectional view showing a state in which the holding member is assembled to the housing ハウジングに保持部材を組み付けた状態を示す側面図Side view showing a state in which the holding member is assembled to the housing 本発明の実施形態２に係る防水コネクタの側断面図Side sectional view of a waterproof connector according to Embodiment 2 of the present invention 保持部材の背面図Rear view of holding member

符号の説明Explanation of symbols

１０…シールド電線（電線）
２０…防水コネクタ
２４…ハウジング
２５…シール部材
２６…保持部材
３５…電線密着孔
４０…電線挿通孔
４４…シール部材保護部
４４ａ…仕切り部分
５０…弾縮部材 10 ... Shielded wire (wire)
DESCRIPTION OF SYMBOLS 20 ... Waterproof connector 24 ... Housing 25 ... Seal member 26 ... Holding member 35 ... Electric wire contact hole 40 ... Electric wire insertion hole 44 ... Seal member protection part 44a ... Partition part 50 ... Retraction member

Claims

後面側から電線が引き出されるハウジングには、前記電線が通されるとともにその外周面に対して液密状に密着可能な電線密着孔を備えたシール部材が装着されるとともに、このシール部材を抜け止め状態に保持可能で、且つ前記電線が挿通される電線挿通孔を備えた保持部材が組み付けられているものであって、
前記保持部材のうち前記電線挿通孔の周縁部には、後方へ突出して前記電線と対向するシール部材保護部が設けられていることを特徴とする防水コネクタ。 The housing from which the electric wire is drawn out from the rear side is fitted with a sealing member provided with an electric wire contact hole that allows the electric wire to pass through and can be tightly contacted with the outer peripheral surface of the electric wire. A holding member that can be held in a stopped state and has an electric wire insertion hole through which the electric wire is inserted is assembled,
The waterproof connector according to claim 1, wherein a seal member protection portion that protrudes rearward and faces the electric wire is provided at a peripheral portion of the electric wire insertion hole of the holding member.

前記シール部材保護部は、前記電線を全周にわたって取り囲む無端環状に形成されていることを特徴とする請求項１記載の防水コネクタ。 The waterproof connector according to claim 1, wherein the seal member protection portion is formed in an endless annular shape surrounding the electric wire over the entire circumference.

前記ハウジングの後面側から前記電線が複数本引き出されるとともに、前記電線密着孔及び前記電線挿通孔が共に複数ずつ設けられており、
前記シール部材保護部は、前記各電線を個別に取り囲むよう形成され、且つ隣り合うシール部材保護部同士が連結されるとともに電線間の仕切り部分が共用化されていることを特徴とする請求項２記載の防水コネクタ。 A plurality of the wires are pulled out from the rear side of the housing, and a plurality of the wire contact holes and the wire insertion holes are provided.
3. The seal member protection part is formed so as to individually surround each of the electric wires, and adjacent seal member protection parts are connected to each other and a partition portion between the electric wires is shared. Waterproof connector as described.

前記シール部材保護部と前記電線との間には、弾縮変形可能な弾縮部材が介設されていることを特徴とする請求項１ないし請求項３のいずれかに記載の防水コネクタ。 4. The waterproof connector according to claim 1, wherein an elastic member that can be elastically deformed is interposed between the seal member protection portion and the electric wire. 5.