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JP4024916B2 - Waterproof stopper - Google Patents

Waterproof stopper Download PDF

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Publication number
JP4024916B2
JP4024916B2 JP02218298A JP2218298A JP4024916B2 JP 4024916 B2 JP4024916 B2 JP 4024916B2 JP 02218298 A JP02218298 A JP 02218298A JP 2218298 A JP2218298 A JP 2218298A JP 4024916 B2 JP4024916 B2 JP 4024916B2
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JP
Japan
Prior art keywords
terminal
crimping
piece
waterproof plug
electric wire
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.)
Expired - Fee Related
Application number
JP02218298A
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Japanese (ja)
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JPH11219752A (en
Inventor
俊晴 工藤
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Yazaki Corp
Original Assignee
Yazaki Corp
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
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Priority to JP02218298A priority Critical patent/JP4024916B2/en
Publication of JPH11219752A publication Critical patent/JPH11219752A/en
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Description

【0001】
【発明の属する技術分野】
本発明は、端子接続された電線に装着させてコネクタハウジングの電線挿通路に装着した際、電線と電線挿通路との間を水密にする防水栓に関するものである。
【0002】
【従来の技術】
自動車のワイヤーハーネス等は、コネクタを介して電気機器等のリード線等に接続されるが、コネクタ同士による接続箇所が、外部からの雨滴等の進入が予測される場合には、コネクタは防水処置を施す必要がある。防水処置としては、電線毎に防水栓を被着してコネクタハウジングの電線挿通路に引き込む簡易タイプのものがある。
【0003】
図7および図8は、このような従来の防水構造を示したもので、図7はその防水構造で使用される防水栓を示し、図8は該防水栓を使用して電線をコネクタハウジングに挿嵌させたコネクタを示している。防水栓50は、図7に示すように、電線60を挿通可能な電線挿通孔51を有する略筒状からなって、ゴム等の一体成形品として形成され、端子加締筒部52と、シール部53とを備えている。
【0004】
ここに、前記端子加締筒部52は、挿通された電線60とともに端子61(図8参照)の加締片62により締め付け固定される筒状部であり、前記加締片62によって締め付けられる細径部54と、該細径部54の前端に位置して前記加締片62による締め付け部からの抜けを防止する拡径部55とを具備して構成されている。また、前記シール部53は、該端子加締筒部52の後端部に連なって設けられるとともに、その外周面に、コネクタハウジング70に挿入した際、コネクタハウジング70の電線挿通路71の内周面と密着する複数条のシール用環状突起57を設けた筒状部である。前記端子61は、この例の場合はいわゆる雄型端子で、基端側に、防水栓50の細径部54を前記電線60とともに加締圧着する加締片62と、前記電線60の導体60bを圧着して該電線60と導通接続される圧着片63とを設けている。また、この基端部に連なる先端部64は、電線挿通路71と連通の端子収容室72により突出して雌型端子と電気接続される舌状突片となっている。
【0005】
上記のように構成された防水栓50は、端子61に接続された電線60に被着されて、コネクタハウジング70の電線挿通路71内に挿入されると、端子61の凹部65が端子収容室72に設けた可撓係止片(ランス)73と後ろ抜け不能に係合することで、電線挿通路71内に装着される。そして、この装着状態において、防水栓50はシール用環状突起56が電線挿通路71の内周面に圧接して電線60とコネクタハウジング70との間を水密にすることで防水が好適に図られる。
【0006】
【発明が解決しようとする課題】
ところで、このようなコネクタでは、各種のサイズ(径)の電線が使用される。そして、それらの2〜3のサイズのものを共用して、大、中、小の3種類の端子61の1つが選択される。したがって、電線サイズが太い場合には、図9に示すように端子61の加締片62の両端部62a,62aを重ね合わすことができず、その状態で加締片62を絞り込んでいくと、防水栓50の肉が加締片62の変形に伴って一方に寄せられ、加締片62の両端部62a,62aで防水栓50の一部を挟み込んでしまい、防水栓50に傷を付ける恐れがある。このような状態で、長期にわたって使用すると、亀裂が拡がって遂には切断に至り、端子61と防水栓50とが離反して防水栓50がコネクタハウジング70から抜け出る恐れがある。
【0007】
本発明はこのような従来技術の有する課題を解決するためになされたもので、その目的は、太い電線に端子を加締圧着する場合でも傷を付けることなく端子を加締圧着することのできる防水栓を提供することにある。
【0008】
【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の防水栓では、軸芯に電線挿通孔を有し、先端に端子の加締片が加締係着される端子加締筒部を備えるとともに、後端外周にシール用環状突起を有するシール部を備えてなり、前記電線挿通孔に電線を挿通させ、前記端子加締筒部に前記端子の加締片を係着させてコネクタハウジングに挿着させ、前記シール用環状突起を前記コネクタハウジングの防水栓挿通路に密接させる防水栓において、前記端子加締筒部が、前記加締片によって締め付けられる細径部と、該細径部の前端に前記加締片の抜けを防止する拡径部とを具備しており、前記端子加締筒部の少なくとも前記細径部の係着面全体に略半球形状の突起を多数形成し、前記加締片を加締めた際に、前記突起を変形させて、前記加締片の変形量を吸収させるようにしている。
【0009】
前記突起としては、略半球形状のものが前記端子加締筒部に多数形成される。
【0010】
本発明の防水栓によれば、加締片を絞り込んだとき、端子の加締片を端子加締筒部に形成した各突起が加締片の変形量をそこで吸収させるため、端子加締筒部の肉が加締片の変形に伴って一方に寄せられことなく、加締片の両端部で端子加締筒部の一部を挟み込む恐れはない。したがって、端子加締筒部が加締片の長さに対して太い場合でも端子加締筒部が加締片の両端部によって挟み込まれるのが防止され、防水栓の損傷が防止される。
【0011】
【発明の実施の形態】
以下、本発明に係る防水栓の好適な実施の形態を図面を参照して詳細に説明する。なお、本発明の実施の形態の説明に先立ち、本発明と主要部の構成が同じである参考例を説明する。図1は本発明に係る防水栓の第1参考例を示し、図2はその防水栓に電線および端子を組み付けた状態を示し、図3は電線,端子が組み付けられた防水栓をコネクタハウジングに組み込んだ状態を示している。
【0012】
防水栓10は、図1に示したように、全体として電線60が挿通可能な電線挿通孔11を有する略筒状を呈して、合成ゴム等の一体成形品として形成されるものであり、機能的に端子加締筒部12とシール部13の2つの部位を備える。ここに、前記端子加締筒部12は、電線挿通孔11に挿通された電線60とともに端子20の加締片21(図2参照)により外方より締め付け固定される筒状部であり、前記加締片21によって締め付けられる細径部14、該細径部14の前端に位置して前記加締め片21による締め付け部からの抜けを防止する拡径部15とを具備して構成されている。そして、細径部14の外周面には等間隔に電線挿通孔11と平行な例えば6本の凸条16が形成されている。なお、図示していないが、前記電線挿通孔11は、その内径が前記シール部13の部分で一番小さくなるように設定されるとともに、内周面に沿って複数の凹凸部が形成されている。このような構造により、防水栓10は、電線60の挿通性と密着性という相反する機能が同時に達成されるようになされている。また、シール部13は、端子加締筒部12の後端部に連なるとともに、シール用環状突起17が外周部に一定間隔で3個所に設けられた筒状部である。なお、シール用環状突起17は、コネクタハウジング30(図3参照)の端子収容室31に連通した防水栓挿通路32の内周面に密着するようにその外径寸法が設定されており、端子加締筒部12の拡径部15よりも大きい。
【0013】
前記端子20は、この例の場合はいわゆる雄型の端子で、基端側には、前記電線60を挿通させた防水栓10の細径部14を把持する加締片21と、前記電線60の導体60bに圧着させて電線60との電気的接続を果たす圧着片22とが備えられ、また、この基端部に連なる先端部23は、雌型端子の先端に嵌合される舌状の突片となっている。
【0014】
前記電線60への端子20の圧着は、先ず前記電線60の先端を外部被覆60aを付けた状態のまま前記防水栓10の電線挿通孔11に貫通させ、該防水栓10の端子加締筒部12より一定長だけ、前記電線60の先端を突出させた状態にして行われる。次いで、この電線60の先端側の外部被覆60aを剥いで導体60bを露出させた状態にし、露出している導体60bが前記端子20の圧着片22の位置にくるように、前記防水栓10の端子加締筒部12および端子加締筒部12から突出した導体60bに前記端子20を縦添えする。そして、端子20の加締片21を防水栓10の端子加締筒部12に加締めて端子20を防水栓10に結合する。その際、図4に示したように、各凸条16がそれぞれ変形して加締片21の変形量を吸収する。したがって、端子加締筒部12が加締片21の長さに対して太い場合にも端子加締筒部12が加締片21の両端部21a,21aによって挟み込まれることはない。次いで前記圧着片21を加締めて導体60bと端子20とを電気的に接続する。
【0015】
このようにして端子20が結合された防水栓10は、コネクタハウジング30に挿着される。コネクタハウジング30は、絶縁性に優れた合成樹脂等によって形成され、端子収容室31内の先端寄りの位置には、各端子収容室31に挿入された雄型の端子20に係合することにより該端子20の後ろ抜けを防止するランス33が装備されている。そして、このコネクタでは、端子20に接続した電線60に被着される防水ゴム栓10によって、コネクタハウジング30内において電線単位で防水が図られる。
【0016】
このようにして、電線60の先端に接続された端子20がコネクタハウジング30の端子収容室31の規定位置まで挿入されると、前記ランス33が端子20の凹部24に係合することによって該端子20の後ろ抜け止めがなされると同時に、前記防水栓10が防水栓挿通路32内に圧入され、シール用環状突起17が該防水栓挿通路32の内周面に緊密に嵌合してコネクタハウジング30と防水栓10との間の防水が実現される。また、前記電線挿通孔11の凸部が電線60の外部被覆60aに密着することにより、防水栓10と電線60との間の防水も実現される。
【0017】
なお、上記第1参考例では、防水栓20の細径部14に凸条16を形成することによって加締片21の変形量を吸収し、端子加締筒部12が加締片21の長さに対して太い場合でも端子加締筒部12が加締片21の両端部21a,21aによって挟み込まれるのを防止しているが、図5に示した第2参考例のように、細径部14に溝18aを形成し、該溝18aによって画成される部分で凸条18を形成してもよく、図6に示した本発明の実施の形態のように、細径部14の外周面全体に多数の半球形等の突起19を形成してもよい。要は、細径部14に突起を形成することによって、その各突起で加締片21の変形量を吸収すればよい。
【0018】
【発明の効果】
以上に記載した実施の形態からも明らかなように、本発明に係る防水栓では、端子の加締片を圧着させる細径部に略半球形状の突起を多数形成することによって、それぞれの突起で加締片の変形量を吸収させている。したがって、端子加締筒部が加締片の長さに対して太い場合でも端子加締筒部が加締片の両端部によって挟み込まれるのが防止され、防水栓の損傷が防止される。
【図面の簡単な説明】
【図1】 本発明に係る防水栓の第1参考例を示した概念的な斜視図である。
【図2】 図1に示した防水栓に電線を装着して端子を取り付けた状態を示した斜視図である。
【図3】 図2に示した端子を装着した電線をコネクタハウジングへ装着させた状態を示した断面図である。
【図4】 図1に示した防水栓の加締筒部に端子の加締片を加締圧着した状態を示した断面図である。
【図5】 本発明に係る防水栓の第2参考例を示した概念的な斜視図である。
【図6】 本発明に係る防水栓の実施の形態を示した概念的な斜視図である。
【図7】 従来の防水栓の斜視図である。
【図8】 図7に示した従来の防水栓を使用して、電線をコネクタハウジングに装着させた状態の断面図である。
【図9】 図7に示した従来の防水栓の問題点を説明するための断面図である。
【符号の説明】
10 防水栓
11 電線挿通孔
12 端子加締筒部
13 シール部
14 細径部
15 拡径部
16 凸条
17 シール用環状突起
18 凸条
18a 溝
19 突起
20 端子
21 加締片
21a 端部
22 圧着片
23 先端部
30 コネクタハウジング
31 端子収容室
32 防水栓挿通路
33 ランス
60 電線
60a 外部被覆
60b 導体
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a waterproof plug that provides watertightness between a wire and a wire insertion passage when the wire is connected to a terminal-connected wire and attached to a wire insertion passage of a connector housing.
[0002]
[Prior art]
Wire harnesses of automobiles are connected to lead wires of electrical equipment etc. via connectors, but if the connection location between the connectors is predicted to enter raindrops etc. from the outside, the connectors should be waterproofed It is necessary to apply. As a waterproofing treatment, there is a simple type in which a waterproof plug is attached to each electric wire and pulled into the electric wire insertion path of the connector housing.
[0003]
7 and 8 show such a conventional waterproof structure. FIG. 7 shows a waterproof plug used in the waterproof structure, and FIG. 8 shows an electric wire to the connector housing using the waterproof plug. The inserted connector is shown. As shown in FIG. 7, the waterproof plug 50 has a substantially cylindrical shape having an electric wire insertion hole 51 through which the electric wire 60 can be inserted, and is formed as an integrally molded product such as rubber. Part 53.
[0004]
Here, the terminal crimping cylinder portion 52 is a cylindrical portion that is fastened and fixed by the crimping piece 62 of the terminal 61 (see FIG. 8) together with the inserted electric wire 60. A diameter portion 54 and a diameter-enlarged portion 55 that is located at the front end of the small-diameter portion 54 and prevents the caulking piece 62 from coming off from the tightening portion are configured. The seal portion 53 is provided continuously to the rear end portion of the terminal caulking tube portion 52, and when inserted into the connector housing 70 on the outer peripheral surface thereof, the inner periphery of the wire insertion passage 71 of the connector housing 70 is provided. This is a cylindrical portion provided with a plurality of sealing annular protrusions 57 that are in close contact with the surface. In this example, the terminal 61 is a so-called male terminal. On the proximal end side, a crimping piece 62 for crimping and crimping the small diameter portion 54 of the waterproof plug 50 together with the electric wire 60 and a conductor 60b of the electric wire 60 are provided. And a crimping piece 63 electrically connected to the electric wire 60 is provided. The distal end portion 64 connected to the base end portion is a tongue-like protruding piece that protrudes from the terminal accommodating chamber 72 that communicates with the wire insertion passage 71 and is electrically connected to the female terminal.
[0005]
When the waterproof plug 50 configured as described above is attached to the electric wire 60 connected to the terminal 61 and is inserted into the electric wire insertion passage 71 of the connector housing 70, the concave portion 65 of the terminal 61 becomes the terminal accommodating chamber. By being engaged with a flexible locking piece (lance) 73 provided at 72 so that it cannot be pulled out backward, it is mounted in the electric wire insertion passage 71. In this mounted state, the waterproof plug 50 is suitably waterproofed by sealing the annular protrusion 56 for sealing against the inner peripheral surface of the wire insertion passage 71 and watertight between the wire 60 and the connector housing 70. .
[0006]
[Problems to be solved by the invention]
By the way, in such a connector, electric wires of various sizes (diameters) are used. Then, one of the three types of terminals 61 of large, medium, and small is selected by sharing those having a size of 2-3. Therefore, when the wire size is thick, as shown in FIG. 9, the ends 62a and 62a of the crimping piece 62 of the terminal 61 cannot be overlapped, and when the crimping piece 62 is narrowed down in this state, The water of the waterproof plug 50 is brought to one side along with the deformation of the crimping piece 62, and a part of the waterproof plug 50 is sandwiched between both ends 62 a and 62 a of the crimping piece 62, and the waterproof plug 50 may be damaged. There is. If it is used for a long time in such a state, the crack spreads and eventually leads to cutting, and there is a possibility that the terminal 61 and the waterproof plug 50 are separated and the waterproof plug 50 comes out of the connector housing 70.
[0007]
The present invention has been made in order to solve such problems of the prior art, and its purpose is to crimp a terminal without damaging the terminal even when crimping the terminal to a thick electric wire. It is to provide a waterproof plug.
[0008]
[Means for Solving the Problems]
In order to solve the above problems, the waterproof plug of the present invention includes a terminal crimping cylinder portion having a wire insertion hole in the shaft core and a crimping piece of the terminal being crimped and engaged at the tip, and the outer periphery of the rear end A sealing portion having an annular projection for sealing, inserting an electric wire into the electric wire insertion hole, engaging a crimping piece of the terminal with the terminal crimping cylinder portion, and inserting the crimping piece into the connector housing, In the waterproof plug in which the annular projection for sealing is brought into close contact with the waterproof plug insertion passage of the connector housing, the terminal crimping cylinder portion includes a narrow diameter portion that is tightened by the crimping piece, and the crimping portion at a front end of the narrow diameter portion. A large- diameter portion that prevents the piece from coming off, and a large number of substantially hemispherical protrusions are formed on the entire engagement surface of at least the small-diameter portion of the terminal caulking tube portion, and the caulking piece is caulked. When tightened, the protrusion is deformed to absorb the deformation amount of the crimping piece. It has to so that.
[0009]
A large number of substantially hemispherical protrusions are formed on the terminal crimping cylinder.
[0010]
According to the waterproof plug of the present invention, when the crimping piece is squeezed, each protrusion formed on the terminal crimping cylinder portion absorbs the deformation amount of the crimping piece. The flesh of the portion is not brought to one side with the deformation of the crimping piece, and there is no possibility that a part of the terminal crimping cylinder portion is sandwiched between both ends of the crimping piece. Therefore, even when the terminal crimping cylinder portion is thicker than the length of the crimping piece, the terminal crimping cylinder portion is prevented from being sandwiched between both ends of the crimping piece, and the waterproof plug is prevented from being damaged.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the waterproof plug according to the present invention will be described in detail with reference to the drawings. Prior to the description of the embodiment of the present invention, a reference example having the same configuration as that of the present invention will be described. FIG. 1 shows a first reference example of a waterproof plug according to the present invention, FIG. 2 shows a state where electric wires and terminals are assembled to the waterproof plug, and FIG. 3 shows a waterproof plug with electric wires and terminals assembled to a connector housing. It shows the assembled state.
[0012]
As shown in FIG. 1, the waterproof plug 10 has a substantially cylindrical shape having a wire insertion hole 11 through which the electric wire 60 can be inserted as a whole, and is formed as an integrally molded product such as synthetic rubber. In particular, it has two parts, a terminal crimping cylinder portion 12 and a seal portion 13. Here, the terminal crimping cylinder portion 12 is a cylindrical portion that is clamped and fixed from the outside by the crimping piece 21 (see FIG. 2) of the terminal 20 together with the electric wire 60 inserted through the electric wire insertion hole 11. A narrow-diameter portion 14 that is fastened by the crimping piece 21, and a large-diameter portion 15 that is positioned at the front end of the narrow-diameter portion 14 and prevents the caulking piece 21 from coming off from the tightening portion. . For example, six ridges 16 that are parallel to the wire insertion hole 11 are formed at equal intervals on the outer peripheral surface of the small-diameter portion 14. Although not shown, the wire insertion hole 11 is set such that its inner diameter is the smallest in the seal portion 13 and a plurality of concave and convex portions are formed along the inner peripheral surface. Yes. With such a structure, the waterproof plug 10 is configured such that the contradictory functions of the insertion property and adhesion of the electric wire 60 are simultaneously achieved. Further, the seal portion 13 is a cylindrical portion that is continuous with the rear end portion of the terminal crimping cylinder portion 12 and has annular seal projections 17 provided at three positions at regular intervals on the outer peripheral portion. The sealing annular protrusion 17 has an outer diameter dimension so as to be in close contact with the inner peripheral surface of the waterproof plug insertion passage 32 communicating with the terminal accommodating chamber 31 of the connector housing 30 (see FIG. 3). It is larger than the enlarged diameter portion 15 of the crimping cylinder portion 12.
[0013]
In this example, the terminal 20 is a so-called male terminal. On the base end side, a crimping piece 21 that holds the narrow-diameter portion 14 of the waterproof plug 10 through which the electric wire 60 is inserted, and the electric wire 60. And a crimping piece 22 which is crimped to the conductor 60b to make electrical connection with the electric wire 60, and a distal end portion 23 connected to the base end portion is a tongue-like shape fitted to the distal end of the female terminal. It is a protruding piece.
[0014]
In crimping the terminal 20 to the electric wire 60, first, the tip of the electric wire 60 is passed through the electric wire insertion hole 11 of the waterproof plug 10 with the outer covering 60a attached, and the terminal crimping cylinder portion of the waterproof plug 10 is inserted. 12 is performed with the tip of the electric wire 60 protruding by a certain length. Next, the outer sheath 60a on the distal end side of the electric wire 60 is peeled to expose the conductor 60b, and the waterproof plug 10 is placed so that the exposed conductor 60b is at the position of the crimping piece 22 of the terminal 20. The terminal 20 is vertically attached to the terminal crimping cylinder portion 12 and the conductor 60b protruding from the terminal crimping cylinder portion 12. Then, the crimping piece 21 of the terminal 20 is crimped to the terminal crimping cylinder portion 12 of the waterproof plug 10 to couple the terminal 20 to the waterproof plug 10. At that time, as shown in FIG. 4, each projection 16 is deformed to absorb the deformation amount of the crimping piece 21. Therefore, even when the terminal crimping cylinder portion 12 is thicker than the length of the crimping piece 21, the terminal crimping cylinder portion 12 is not sandwiched between the both end portions 21 a and 21 a of the crimping piece 21. Next, the crimping piece 21 is caulked to electrically connect the conductor 60 b and the terminal 20.
[0015]
Thus, the waterproof plug 10 to which the terminal 20 is coupled is inserted into the connector housing 30. The connector housing 30 is formed of synthetic resin or the like having excellent insulating properties, and is engaged with the male terminal 20 inserted into each terminal accommodating chamber 31 at a position near the tip in the terminal accommodating chamber 31. A lance 33 is provided to prevent the terminal 20 from falling behind. In this connector, the waterproof rubber plug 10 attached to the electric wire 60 connected to the terminal 20 provides waterproofing in the connector housing 30 in units of electric wires.
[0016]
In this way, when the terminal 20 connected to the tip of the electric wire 60 is inserted to the specified position of the terminal accommodating chamber 31 of the connector housing 30, the lance 33 is engaged with the recess 24 of the terminal 20, thereby At the same time, the waterproof plug 10 is press-fitted into the waterproof plug insertion passage 32, and the sealing annular projection 17 is tightly fitted to the inner peripheral surface of the waterproof plug insertion passage 32 so as to be a connector. Waterproofing between the housing 30 and the waterproof plug 10 is realized. Further, since the convex portion of the electric wire insertion hole 11 is in close contact with the outer sheath 60 a of the electric wire 60, waterproofing between the waterproof plug 10 and the electric wire 60 is also realized.
[0017]
In the first reference example , the deformation amount of the crimping piece 21 is absorbed by forming the ridge 16 on the narrow diameter portion 14 of the waterproof plug 20, and the terminal crimping cylinder portion 12 is the length of the crimping piece 21. Even when the terminal crimping cylinder portion 12 is thick, the terminal crimping cylinder portion 12 is prevented from being sandwiched between the two end portions 21a and 21a of the crimping piece 21, but the small diameter as in the second reference example shown in FIG. A groove 18a may be formed in the portion 14, and the protrusion 18 may be formed at a portion defined by the groove 18a. The outer periphery of the small-diameter portion 14 as in the embodiment of the present invention shown in FIG. A large number of hemispherical protrusions 19 may be formed on the entire surface. In short, by forming protrusions on the narrow-diameter portion 14, the deformation amount of the crimping piece 21 may be absorbed by each protrusion.
[0018]
【The invention's effect】
As is clear from the embodiment described above, in the waterproof plug according to the present invention, a large number of substantially hemispherical protrusions are formed on the small diameter part to which the crimping piece of the terminal is crimped. The amount of deformation of the crimping piece is absorbed. Therefore, even when the terminal crimping cylinder portion is thicker than the length of the crimping piece, the terminal crimping cylinder portion is prevented from being sandwiched between both ends of the crimping piece, and the waterproof plug is prevented from being damaged.
[Brief description of the drawings]
FIG. 1 is a conceptual perspective view showing a first reference example of a waterproof plug according to the present invention.
2 is a perspective view showing a state in which a wire is attached to the waterproof plug shown in FIG. 1 and a terminal is attached. FIG.
3 is a cross-sectional view showing a state where an electric wire equipped with the terminal shown in FIG. 2 is attached to a connector housing. FIG.
4 is a cross-sectional view showing a state in which a crimping piece of a terminal is crimped and crimped to a crimping tube portion of the waterproof plug shown in FIG. 1. FIG.
FIG. 5 is a conceptual perspective view showing a second reference example of the waterproof plug according to the present invention.
FIG. 6 is a conceptual perspective view showing an embodiment of a waterproof plug according to the present invention.
FIG. 7 is a perspective view of a conventional waterproof plug.
8 is a cross-sectional view of a state where an electric wire is attached to a connector housing using the conventional waterproof plug shown in FIG.
FIG. 9 is a cross-sectional view for explaining problems of the conventional waterproof plug shown in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Waterproof plug 11 Electric wire insertion hole 12 Terminal crimping cylinder part 13 Seal part 14 Thin diameter part 15 Wide diameter part 16 Convex strip 17 Ring-shaped protrusion 18 For convexity 18a Groove 19 Protrusion 20 Terminal 21 Crimping piece 21a End part 22 Crimp Piece 23 Tip 30 Connector housing 31 Terminal accommodating chamber 32 Waterproof plug insertion passage 33 Lance 60 Electric wire 60a Outer sheath 60b Conductor

Claims (1)

軸芯に電線挿通孔を有し、先端に端子の加締片が加締係着される端子加締筒部を備えるとともに、後端外周にシール用環状突起を有するシール部を備えてなり、前記電線挿通孔に電線を挿通させ、前記端子加締筒部に前記端子の加締片を係着させてコネクタハウジングに挿着させ、前記シール用環状突起を前記コネクタハウジングの防水栓挿通路に密接させる防水栓において、
前記端子加締筒部が、前記加締片によって締め付けられる細径部と、該細径部の前端に前記加締片の抜けを防止する拡径部とを具備しており、前記端子加締筒部の少なくとも前記細径部の係着面全体に略半球形状の突起を多数形成し、前記加締片を加締めた際に、前記突起を変形させて、前記加締片の変形量を吸収させるようにしたことを特徴とする防水栓。
The shaft core has a wire insertion hole, and at the tip thereof is provided with a terminal crimping cylinder portion on which a crimping piece of a terminal is fastened and engaged, and a seal portion having an annular projection for sealing on the outer periphery of the rear end, The electric wire is inserted into the electric wire insertion hole, the terminal caulking piece is engaged with the terminal caulking tube portion and is inserted into the connector housing, and the sealing annular protrusion is inserted into the waterproof plug insertion passage of the connector housing. In waterproofing stoppers that are closely
The terminal crimping cylinder portion includes a narrow diameter portion that is tightened by the crimping piece, and a large diameter portion that prevents the crimping piece from coming off at a front end of the narrow diameter portion, A large number of substantially hemispherical protrusions are formed on the entire engaging surface of at least the small-diameter portion of the cylindrical portion, and when the caulking piece is caulked, the protrusion is deformed to reduce the deformation amount of the caulking piece. Waterproof stopper characterized by absorption.
JP02218298A 1998-02-03 1998-02-03 Waterproof stopper Expired - Fee Related JP4024916B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP02218298A JP4024916B2 (en) 1998-02-03 1998-02-03 Waterproof stopper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP02218298A JP4024916B2 (en) 1998-02-03 1998-02-03 Waterproof stopper

Publications (2)

Publication Number Publication Date
JPH11219752A JPH11219752A (en) 1999-08-10
JP4024916B2 true JP4024916B2 (en) 2007-12-19

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2856568B1 (en) * 2012-05-31 2018-07-11 Delphi International Operations Luxembourg S.à r.l. Single wire seal for sealing an electric cable in an aperture of a terminal
JP2015201403A (en) * 2014-04-10 2015-11-12 矢崎総業株式会社 Rubber plug fixing structure
JP2015207439A (en) * 2014-04-21 2015-11-19 住友電装株式会社 Waterproof rubber stopper, wire with waterproof rubber stopper, and connector with wire
JP6926884B2 (en) * 2017-09-21 2021-08-25 株式会社オートネットワーク技術研究所 Wire with terminal

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