JPH09199218A - Waterproof connector - Google Patents

Waterproof connector

Info

Publication number
JPH09199218A
JPH09199218A JP966696A JP966696A JPH09199218A JP H09199218 A JPH09199218 A JP H09199218A JP 966696 A JP966696 A JP 966696A JP 966696 A JP966696 A JP 966696A JP H09199218 A JPH09199218 A JP H09199218A
Authority
JP
Japan
Prior art keywords
connection terminal
electric wire
waterproof seal
wire
seal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP966696A
Other languages
Japanese (ja)
Inventor
Kenjiro Konishi
健二郎 小西
Koichiro Sakai
浩一郎 坂井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Priority to JP966696A priority Critical patent/JPH09199218A/en
Publication of JPH09199218A publication Critical patent/JPH09199218A/en
Pending legal-status Critical Current

Links

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof connector, which constitutes a wire coating layer by two layers, which can prevent leading to a connection terminal from between these two layers of water even when its infiltration is generated by damaging the layer in an outer side. SOLUTION: This connector has a connection terminal connecting a wire, housing inserting the connection terminal and a cylindrical waterproofing seal 11 inserting the connection terminal connecting the wire to water-tightly seal between the housing and the wire connected to the connection terminal. Here, the waterproofing seal 11, having a circular annular stepped surface 13 in an internal peripheral surface, comprises a relatively internal diametric large/small part, circular annular irregularity parts 14a, 14b are provided in the internal peripheral surface in both sides of the stepped surface 13, the connected wire is inserted to the waterproofing seal 11 from an internal diametric large part toward small part.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、電線の接続に用い
る防水コネクタに関し、特に被覆層が絶縁層とシースの
二層からなる絶縁電線の接続に用いる防水コネクタに関
する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof connector used for connecting electric wires, and more particularly to a waterproof connector used for connecting insulated electric wires having a coating layer consisting of two layers, an insulating layer and a sheath.

【0002】[0002]

【従来の技術】従来の防水コネクタは、例えば図3に示
す構造をしている。この防水コネクタ1は、接続端子2
と、接続端子2が挿入されるハウジング(図示されず)
と、ハウジングと接続端子2に接続された電線3との間
を水密に封ずる防水シール4とから構成されている。5
は接続端子2の嵌合部、6は電線3を接続する圧着部で
ある。。防水シール4はゴム製で、図4に示すように、
円筒状をなしており、内側には接続端子2に接続されて
挿入された電線3を水密性よくシールするためのリング
状の凹凸部4aが軸方向に間隔を開けて複数個設けられ
ており、外側にはハウジングとの間を水密性をよくシー
ルするためのリング状の凹凸部4bが軸方向に間隔を開
けて複数個設けられている。
2. Description of the Related Art A conventional waterproof connector has, for example, a structure shown in FIG. This waterproof connector 1 has a connection terminal 2
And a housing into which the connection terminal 2 is inserted (not shown)
And a waterproof seal 4 for water-tightly sealing between the housing and the electric wire 3 connected to the connection terminal 2. 5
Is a fitting portion of the connection terminal 2, and 6 is a crimping portion for connecting the electric wire 3. . The waterproof seal 4 is made of rubber, and as shown in FIG.
It has a cylindrical shape, and a plurality of ring-shaped uneven portions 4a for sealing the electric wire 3 connected to the connection terminal 2 and inserted therein with good water-tightness are provided on the inner side at intervals in the axial direction. A plurality of ring-shaped concave-convex portions 4b are provided on the outer side at intervals in the axial direction in order to seal the housing and the water-tightness well.

【0003】この防水コネクタ1による電線3の接続は
以下のようにして行われる。即ち、電線3の端部の被覆
層3aを適当な長さで皮剥ぎして、導体3bを露出さ
せ、電線3を防水シール4に挿通する。そうして、導体
3bを圧着部6で接続端子2に圧着接続する。この状態
で、接続端子2の嵌合部5をハウジング(図示されず)
に挿入、固定する。このようなハウジングを一対、雌・
雄を構成するように備え、これらハウジングを結合する
とともに、それそれの雌・雄を形成する嵌合部5、5を
嵌合させて、水密に電線3、3相互を接続する。
The electric wire 3 is connected by the waterproof connector 1 as follows. That is, the coating layer 3a at the end of the electric wire 3 is peeled off with an appropriate length to expose the conductor 3b, and the electric wire 3 is inserted into the waterproof seal 4. Then, the conductor 3b is crimp-connected to the connection terminal 2 at the crimp portion 6. In this state, the fitting portion 5 of the connection terminal 2 is provided with a housing (not shown).
Insert and fix. A pair of such housings, female
The housings are connected to each other so as to form a male, and the fitting portions 5 and 5 forming the female and male of the housings are fitted to each other to connect the electric wires 3 and 3 in a watertight manner.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、上述の
防水コネクタには、以下のような問題があった。即ち、
図5に示すように、接続する電線の被覆層3aが絶縁層
3a1 とシース3a2 の二層から構成されていると、こ
の二層からなる被覆層3aを一括して段剥ぎして、この
電線3を接続端子2と接続し、防水シール4を被せる。
この場合、機械的強度を受け持つ外側のシース3a2
損傷すると、絶縁層3a1 とシース3a2の層間に水が
浸入して、接続端子に到達し、接続端子を汚染、腐食す
るおそれがあった。
However, the above-mentioned waterproof connector has the following problems. That is,
As shown in FIG. 5, when the covering layer 3a of the electric wire to be connected is composed of two layers of the insulating layer 3a 1 and the sheath 3a 2 , the covering layer 3a composed of these two layers is collectively peeled off, The electric wire 3 is connected to the connection terminal 2, and the waterproof seal 4 is covered.
In this case, if the outer sheath 3a 2 responsible for mechanical strength is damaged, water may enter between the insulating layer 3a 1 and the sheath 3a 2 to reach the connection terminal, and may contaminate or corrode the connection terminal. It was

【0005】[0005]

【課題を解決するための手段】本発明は上記問題点を解
決すべくなされたもので、電線が接続される接続端子
と、該接続端子が挿入されるハウジングと、電線が接続
された前記接続端子が挿通されて、ハウジングと接続端
子に接続された電線との間を水密に封ずる円筒状の防水
シールとを有する防水コネクタにおいて、前記防水シー
ルは内周面に円環状の段差面を有して、相対的に内径の
大きい部分と小さい部分からなり、また前記段差面の両
側の内周面には円環状の凹凸部が設けられ、接続される
電線は内径の大きい部分から小さい部分に向けて前記防
水シールに挿入されることを特徴とするものである。
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a connection terminal to which an electric wire is connected, a housing into which the connection terminal is inserted, and the connection to which the electric wire is connected are provided. In a waterproof connector having a cylindrical waterproof seal that inserts a terminal and seals between a housing and an electric wire connected to a connection terminal in a watertight manner, the waterproof seal has an annular step surface on an inner peripheral surface. Then, it is composed of a portion having a relatively large inner diameter and a portion having a relatively small inner diameter. It is characterized in that it is inserted toward the waterproof seal.

【0006】上述のような防水シールを有する防水コネ
クタを用いて、被覆層が内側の絶縁層と外側のシースの
二層から構成されている電線を接続する場合、段差面の
高さをシースの厚さと同等にすると、被覆層をシースと
絶縁層にわけて段剥ぎして、絶縁層の端部を表面に出
し、防水シールの内径の小さい部分の円環状の凹凸部で
絶縁層をシールし、防水シールの内径の大きい部分の円
環状の凹凸部でシースをシールすることができる。従っ
て、外側のシースが損傷して、絶縁層とシースの層間に
水が浸入してきても、防水シールの内径の小さい部分で
絶縁層表面をシールしているため、水が絶縁層とシース
の層間を通って接続端子に到達するのを防止することが
できる。
[0006] When connecting an electric wire whose cover layer is composed of two layers, an inner insulating layer and an outer sheath, by using the waterproof connector having the waterproof seal as described above, the height of the step surface is set to the sheath surface. If the thickness is made equal, the coating layer is divided into a sheath and an insulating layer, and the layer is peeled off to expose the end of the insulating layer to the surface, and the insulating layer is sealed with a ring-shaped concavo-convex portion with a small inner diameter of the waterproof seal. The sheath can be sealed by the annular irregular portion of the waterproof seal having a large inner diameter. Therefore, even if the outer sheath is damaged and water invades between the insulating layer and the sheath, the water is sealed between the insulating layer and the sheath because the surface of the insulating layer is sealed by the portion with the small inner diameter of the waterproof seal. It is possible to prevent the connection terminal from reaching the connection terminal.

【0007】[0007]

【発明の実施の形態】以下、図面に基づいて本発明の実
施の形態を詳細に説明する。図1は、本発明にかかる防
水コネクタを構成する防水シール11の一実施形態の断
面図である。また、図2は、上記防水シール11を電線
3に被せてシールした状態の説明図である。この防水シ
ール11はゴム製で円筒状をしており、その外周面には
ハウジングを水密性よくシールするための円環状の凹凸
部12が形成されている。また、防水シール11の内周
面には円環状の段差面13が設けられており、この段差
面13の片側、挿入された電線3の端部側の内径d
1 は、その反対側の内径d2 よりも小さくなっている。
さらに、防水シール11の段差面13の両側の内周面に
は電線3を水密性よくシールするための円環状の凹凸部
14a、14bが形成されている。
Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a cross-sectional view of an embodiment of a waterproof seal 11 that constitutes a waterproof connector according to the present invention. Further, FIG. 2 is an explanatory diagram showing a state in which the waterproof seal 11 is covered and sealed on the electric wire 3. The waterproof seal 11 is made of rubber and has a cylindrical shape, and an annular uneven portion 12 for sealing the housing with good watertightness is formed on the outer peripheral surface thereof. Further, an annular step surface 13 is provided on the inner peripheral surface of the waterproof seal 11, and the inner diameter d on one side of the step surface 13 and the end portion side of the inserted electric wire 3
1 is smaller than the inner diameter d 2 on the opposite side.
Further, on the inner peripheral surfaces on both sides of the stepped surface 13 of the waterproof seal 11, annular concavo-convex portions 14a and 14b for sealing the electric wire 3 with good watertightness are formed.

【0008】接続される電線3は絶縁層3a1 とシース
3a2 の二層からなる被覆層3aで被覆されており、そ
の接続端部は絶縁層3a1 とシース3a2 の二段に段剥
ぎされて、導体3bが露出している。この電線3の接続
に用いる防水シール11には、高さがシース3a2 の厚
さと同等の段差面13を設ける。この電線3への防水シ
ール11の装着は、電線3の接続端部を防水シール11
の内径の大きい方の端部(図2の左側)から挿入し、段
剥ぎしたシース3a2 の断面を段差面13に当接し、被
覆層3aの内側を構成する絶縁層3a1 の表面を小さな
方の内径の内周面に設けられた凹凸部14aで水密にシ
ールし、被覆層3aの外側を構成するシース3a2 の表
面を大きな内径の内周面に設けられた凹凸部14bでシ
ールする。
The electric wire 3 to be connected is covered with a covering layer 3a consisting of two layers of an insulating layer 3a 1 and a sheath 3a 2 , and its connecting end portion is stripped in two steps of the insulating layer 3a 1 and the sheath 3a 2. The conductor 3b is exposed. The waterproof seal 11 used for connecting the electric wire 3 is provided with a step surface 13 whose height is equal to the thickness of the sheath 3a 2 . To attach the waterproof seal 11 to the electric wire 3, attach the waterproof seal 11 to the connecting end of the electric wire 3.
The inner surface of the insulating layer 3a 1 forming the inner side of the coating layer 3a is made smaller by inserting the cross section of the stepped stripped sheath 3a 2 into contact with the step surface 13 by inserting from the end with the larger inner diameter (left side in FIG. 2). Watertight sealing is performed with the uneven portion 14a provided on the inner peripheral surface of the other inner diameter, and the surface of the sheath 3a 2 constituting the outer side of the coating layer 3a is sealed with the uneven portion 14b provided on the inner peripheral surface of the larger inner diameter. .

【0009】上述のように防水シール11を電線3に装
着すると、防水コネクタを構成するハウジングを電線3
の接続端部側(図2の右側)から装着して、凹凸部12
でハウジング(図示せず)と防水シール11の間を水密
にシールすることができる。また、シース3a2 に損傷
が生じて浸水し、その水がシース3a2 と絶縁層3a 1
の層間に浸入しても、その水は凹凸部14aで食い止め
られるため、この水は接続端子に達することはない。
As described above, the waterproof seal 11 is attached to the electric wire 3.
When you put it on, the electric wire 3
From the connection end side (right side in FIG. 2) of the uneven portion 12
Is watertight between the housing (not shown) and the waterproof seal 11.
Can be sealed on. Also, the sheath 3aTwoDamage to
Water is generated and the water is infiltrated, and the water enters the sheath 3a.TwoAnd insulating layer 3a 1
Even if it penetrates between the layers, the water is blocked by the uneven portion 14a.
This water does not reach the connecting terminals.

【0010】[0010]

【発明の効果】以上説明したように本発明によれば、電
線が接続される接続端子と、該接続端子が挿入されるハ
ウジングと、電線が接続された前記接続端子が挿通され
て、ハウジングと接続端子に接続された電線との間を水
密に封ずる円筒状の防水シールとを有する防水コネクタ
において、前記防水シールは内周面に円環状の段差面を
有して、相対的に内径の大きい部分と小さい部分からな
り、また前記段差面の両側の内周面には円環状の凹凸部
が設けられ、接続される電線は内径の大きい部分から小
さい部分に向けて前記防水シールに挿入されるため、電
線の被覆層が二層から構成され、外側の層が損傷して浸
水が生じても、水がこれらの二層の層間から接続端子に
達するのを防ぐことができるという優れた効果がある。
As described above, according to the present invention, a connection terminal to which an electric wire is connected, a housing into which the connection terminal is inserted, and the connection terminal to which the electric wire is connected are inserted to form a housing. In a waterproof connector having a cylindrical waterproof seal that seals between the electric wire connected to the connection terminal in a watertight manner, the waterproof seal has an annular step surface on the inner peripheral surface, and has a relative inner diameter. It is composed of a large part and a small part, and annular uneven parts are provided on the inner peripheral surfaces on both sides of the stepped surface, and the electric wire to be connected is inserted into the waterproof seal from the part with the large inner diameter to the part with the small inner diameter. Therefore, even if the outer layer is damaged and water is flooded because the coating layer of the wire is composed of two layers, it is possible to prevent water from reaching the connection terminals from between these two layers. There is.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係る防水コネクタを構成する防水シー
ルの一実施形態の断面図である。
FIG. 1 is a cross-sectional view of an embodiment of a waterproof seal that constitutes a waterproof connector according to the present invention.

【図2】上記防水シールを電線に装着した状態の断面図
である。
FIG. 2 is a cross-sectional view showing a state where the waterproof seal is attached to an electric wire.

【図3】従来の防水コネクタを電線に接続した状態の側
面図である。
FIG. 3 is a side view showing a state in which a conventional waterproof connector is connected to an electric wire.

【図4】上記従来の防水コネクタに用いた防水シールの
断面図である。
FIG. 4 is a sectional view of a waterproof seal used in the conventional waterproof connector.

【図5】従来の防水コネクタの問題点の説明図である。FIG. 5 is an explanatory view of problems of the conventional waterproof connector.

【符号の説明】[Explanation of symbols]

1 防水コネクタ 2 接続端子 3 電線 3a 被覆層 3a1 絶縁層 3a2 シース 3b 導体 4 防水シール 4a、4b 凹凸部 5 嵌合部 6 圧着部 11 防水シール 12、14a、14b 凹凸部 13 段差面DESCRIPTION OF SYMBOLS 1 Waterproof connector 2 Connection terminal 3 Electric wire 3a Covering layer 3a 1 Insulating layer 3a 2 Sheath 3b Conductor 4 Waterproof seal 4a, 4b Uneven part 5 Fitting part 6 Crimping part 11 Waterproof seal 12, 14a, 14b Uneven part 13 Step surface

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 電線が接続される接続端子と、該接続端
子が挿入されるハウジングと、電線が接続された前記接
続端子が挿通されて、ハウジングと接続端子に接続され
た電線との間を水密に封ずる円筒状の防水シールとを有
する防水コネクタにおいて、前記防水シールは内周面に
円環状の段差面を有して、相対的に内径の大きい部分と
小さい部分からなり、また前記段差面の両側の内周面に
は円環状の凹凸部が設けられ、接続される電線は内径の
大きい部分から小さい部分に向けて前記防水シールに挿
入されることを特徴とする防水コネクタ。
1. A connection terminal to which an electric wire is connected, a housing into which the connection terminal is inserted, and the connection terminal to which the electric wire is connected are inserted between the housing and the electric wire connected to the connection terminal. In a waterproof connector having a watertight cylindrical waterproof seal, the waterproof seal has an annular step surface on an inner peripheral surface, and has a relatively large inner diameter portion and a relatively small inner diameter portion. A waterproof connector, wherein annular concave and convex portions are provided on inner peripheral surfaces on both sides of the surface, and an electric wire to be connected is inserted into the waterproof seal from a portion having a large inner diameter to a portion having a small inner diameter.
JP966696A 1996-01-24 1996-01-24 Waterproof connector Pending JPH09199218A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP966696A JPH09199218A (en) 1996-01-24 1996-01-24 Waterproof connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP966696A JPH09199218A (en) 1996-01-24 1996-01-24 Waterproof connector

Publications (1)

Publication Number Publication Date
JPH09199218A true JPH09199218A (en) 1997-07-31

Family

ID=11726548

Family Applications (1)

Application Number Title Priority Date Filing Date
JP966696A Pending JPH09199218A (en) 1996-01-24 1996-01-24 Waterproof connector

Country Status (1)

Country Link
JP (1) JPH09199218A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10256701B4 (en) * 2001-12-04 2008-02-21 Sumitomo Wiring Systems, Ltd., Yokkaichi Waterproof, resilient stopper
CN101859960A (en) * 2009-04-03 2010-10-13 住友电装株式会社 Resilient plug, fluid proof construction and connector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10256701B4 (en) * 2001-12-04 2008-02-21 Sumitomo Wiring Systems, Ltd., Yokkaichi Waterproof, resilient stopper
CN101859960A (en) * 2009-04-03 2010-10-13 住友电装株式会社 Resilient plug, fluid proof construction and connector
EP2254203A1 (en) * 2009-04-03 2010-11-24 Sumitomo Wiring Systems, Ltd. Resilient plug, fluid proof construction and connector
US7997916B2 (en) 2009-04-03 2011-08-16 Sumitomo Wiring Systems, Ltd. Resilient plug, fluid proof construction and connector

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