JP2004095462A - Waterproof rubber stopper - Google Patents

Waterproof rubber stopper Download PDF

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Publication number
JP2004095462A
JP2004095462A JP2002257627A JP2002257627A JP2004095462A JP 2004095462 A JP2004095462 A JP 2004095462A JP 2002257627 A JP2002257627 A JP 2002257627A JP 2002257627 A JP2002257627 A JP 2002257627A JP 2004095462 A JP2004095462 A JP 2004095462A
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Japan
Prior art keywords
electric wire
waterproof rubber
insertion hole
wire insertion
rubber stopper
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.)
Withdrawn
Application number
JP2002257627A
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Japanese (ja)
Inventor
Tomohiko Kobayashi
小林 智彦
Hirotaka Noguchi
野口 紘敬
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.)
Sumitomo Wiring Systems Ltd
Original Assignee
Sumitomo Wiring Systems 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 Sumitomo Wiring Systems Ltd filed Critical Sumitomo Wiring Systems Ltd
Priority to JP2002257627A priority Critical patent/JP2004095462A/en
Publication of JP2004095462A publication Critical patent/JP2004095462A/en
Withdrawn legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To prevent waterproof rubber stoppers from being coupled with each other in a parts feeder. <P>SOLUTION: The rubber stopper used for a waterproof connector has a clench prevention wall 14 with an inner diameter of a wire insertion hole 13 made smaller than the outer diameter of a tip face of a fixing part 12 set protruded inward on the inner peripheral face of an inlet 13a of the wire insertion hole 13. By this, when waterproof rubber stoppers 10 transferred inside the parts feeder by vibration get in a state pressed to each other, they can be prevented from being coupled with each other by getting in contact with the clench prevention wall 14 even if the tapered tip of the fixing part 12 of another waterproof rubber stopper 10 tries to get inserted into the inlet 13a of the wire insertion hole 13. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は防水ゴム栓に関し、詳しくは、パーツフィダー内でのゴム栓同士の連結を防止するものである。
【0002】
【従来の技術】
従来、防水コネクタに使用する防水ゴム栓としては、特開平7−282893号公報に記載のものが知られている。その使用態様としては、図4に示すように、端子金具1に圧着して接続される電線Wの端末に、外周にリップ部2aを備えると共に、中心に電線挿通孔2bを備えた筒状の防水ゴム栓2を外嵌するようにしている。そして、この防水ゴム栓2の先端の固定部2cを端子金具1の後端に突設した一対のインシュレーションバレル1aにより包み込むようにして圧着することで端子金具1に防水ゴム栓2を固定すると共に、電線Wの先端を皮剥ぎした芯線Waをワイヤバレル1bにより圧着するようにしている。
【0003】
一般に、この種の防水ゴム栓2は、コネクタの組み立てに際し、自動機を利用して電線Wを電線挿通孔2bに挿通させるようにしており、その前工程において、防水ゴム栓2は振動ボウルフィーダー等のパーツフィーダーを利用して所要方向に整列した状態で1個ずつ電線挿通機に供給される。パーツフィーダーのボウル内には多数の防水ゴム栓2が投入され、ボウルに付与される振動によって所要の経路に沿って移送される間に防水ゴム栓2の方向、姿勢が整えられるようになっている。
【0004】
【発明が解決しようとする課題】
近年、コネクタの小型化に伴い、端子金具1および防水ゴム栓2も小型のものが使用されるようになっている。このため、図5(A)に示すように、防水ゴム栓2において先端の固定部2cの端面の外径d1が電線挿通孔2bの入り口の内径d2より小径に設定される場合がある。即ち、電線挿通孔2bの入り口では、電線Wの初期挿入を容易にするため電線Wの外径Dと略同一径とされるが、先端の固定部2cでは、電線挿通孔2bの内径d3は電線Wの外径Dより小さい設定としている。これは、電線Wの外周にインシュレーションバレル1aを圧着したときに固定部2cが捲れ上がってコネクタハウジングの端子挿入孔への挿入が阻害されないようにするためである。
【0005】
このため、防水ゴム栓2をパーツフィーダーで移送する間に、その振動作用によって、図5(B)に示すように、固定部2cの先端が、他の防水ゴム栓2の電線挿通孔2bの入り口に突き刺さって連結した状態となることがある。このように防水ゴム栓2同士が連結した状態になると、パーツフィーダー内での正常な整列移送が阻害されたり、或いは後続の工程でトラブルを引き起こすという問題があった。
【0006】
本発明は上記問題に鑑みてなされたもので、本発明では、防水ゴム栓同士がパーツフィーダー内で連結することのない防水ゴム栓を提供するものである。
【0007】
【課題を解決するための手段】
上記課題を解決するため、本発明では、コネクタハウジングの端子挿入孔の内周に密着するリップ部を外周に備えた胴部と、該胴部の先端から延設されると共に端子金具のインシュレーションバレルによって電線の外周に圧着される固定部とからなり、上記胴部と固定部の軸心に上記電線の外周に弾性的に密着可能な電線挿通孔を備えた防水ゴム栓において、
上記電線挿通孔の入り口の内周部には電線挿通孔の内径を上記固定部の先端面の外径より小径となるようにした嵌合防止壁を内方へ向けて突設したことを特徴とする防水ゴム栓を提供している。
【0008】
上記構成によれば、パーツフィーダー内に投入された多数の防水ゴム栓を振動により整列移送する際、防水ゴム栓が軸方向に直列に並んだ状態となっても、固定部の先端面は他の防水ゴム栓の入り口に設けた嵌合防止壁に当接するため、防水ゴム栓が互いに連結するのを防止できる。
なお、嵌合防止壁としては、内周の全周に渉って形成するものの他、間隔を開けて部分的に形成してもよい。
【0009】
また、上記電線挿通孔の入り口には上記胴部の端面に向かってテーパー状に拡径する電線案内部を設けると共に、上記嵌合防止壁は上記電線案内部に隣接して設けるようにしてもよい。
このようにすれば、電線挿通孔への電線の挿入作業に際し、嵌合防止壁によっ電線の初期挿入が阻害されることがなく、電線案内部によって初期挿入時の電線先端の位置決めを容易にすることができる。
【0010】
【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は本発明に係る防水ゴム栓10の実施形態の断面図を示し、ゴム製よりなる円筒状で肉厚の胴部11と、この胴部11の先端から一体的に延設された薄肉の固定部12から構成している。防水ゴム栓10の軸心には、電線Wの外周に弾性的に密着可能な電線挿通孔13を形成している。
【0011】
胴部11の外周には、コネクタハウジング(図示せず)の端子挿入孔の内周に所要間隔毎に密着する複数の環状のリップ部11aを突設する一方、内周にはリップ部11aと互い違いになる位置に電線Wの外周との密着性を良好とするための凸部11bを周設している。固定部12は、防水ゴム栓10を端子金具(図示せず)のインシュレーションバレルによって電線Wの外周に圧着固定するための領域としている。
【0012】
電線挿通孔13は、固定部12側の内径d3を胴部11側の内径d2より小径とし、固定部12において電線Wに対する弾性密着度を高める設定としている。詳しくは、固定部12側の内径d3および先端面の外径d1は、胴部11との境界部から固定部12の先端方へ至るに従いテーパー状に縮径するようにし、更に固定部12の先端外周には先端を先細りとする面取部12aを形成している。なお、本実施形態において胴部11および固定部12における電線挿通孔13の内径d1、d2は、具体的には、例えば電線Wの外径D=1.4mmのときd1=1.35mm、d2=1.6mm、d3=1.0mmとしている。
【0013】
電線挿通孔13の入り口13aの内周部には、電線挿通孔13の内径d2を上記固定部12の先端面の外径d1より小径となるように軸心方向へ向けて突出する嵌合防止壁14を突設している。この嵌合防止壁14は、入り口13aより少し内方へ入った位置に設けるのが好ましく、嵌合防止壁14に継続するように隣接する位置には、胴部11の端面に向かってテーパー状に拡開する電線案内部15を設けている。この電線案内部15の拡開端面の内径d4は、電線Wの外径Dより大きくして電線Wの初期挿入時の位置決めを容易とし、かつ、固定部12の先端が嵌合防止壁14に当接する前に嵌合して連結しない程度に大きく設定している。本実施形態においては、嵌合防止壁14によって狭められた電線挿通孔13の通路を内径d5=1.15mmに設定している。
なお、嵌合防止壁14は、図2(B)に示すように、内周全域に渉って形成するか、または、図2(C)に示すように、間隔14aを開けて形成するようにしている。間隔14aを設けたものにおいては、電線Wの挿入時における挿入抵抗を少なくすることができる。
【0014】
次に、本実施形態の作用について説明する。
多数の防水ゴム栓10がパーツフィーダー(図示せず)に投入され、振動作用によって所要に姿勢で移送させるとき、その振動作用によって防水ゴム栓10が順次前方の他の防水ゴム栓10に連なって互いに押圧し合う状態となる。
このとき、図3に示すように、防水ゴム栓10の固定部12の端面は先細に形成されているため、前方に連なる他の防水ゴム栓10の胴部11の入り口13aに挿入されて嵌合しようとする。しかしながら、固定部12の端面が、他の防水ゴム栓10の入り口13aに設けた嵌合防止壁14に当接するため、それ以上深く嵌入されず、よって防水ゴム栓10同士が互い嵌合した状態で連結されるのを確実に防止することができる。
【0015】
【発明の効果】
以上の説明より明らかなように、本発明によれば、防水ゴム栓をパーツフィーダーによって振動を与えながら整列移送する際、先端が細くされた固定部の端面が、他の防水ゴム栓の入り口に設けた嵌合防止壁に当接するため、防水ゴム栓同士が嵌合状態で連結されるのを防止することができる。よって、後工程における防水ゴム栓への電線挿入や端子金具の圧着工程において、防水ゴム栓の連結に起因する製造上の種々のトラブル発生を未然に防止することができる。
【図面の簡単な説明】
【図1】本発明に係る防水ゴム栓の実施形態を示す断面図である。
【図2】(A)は防水ゴム栓の正面図、(B)は右側面図、(C)は変形例の右側面図である。
【図3】嵌合防止壁の作用を示す断面図である。
【図4】従来例の防水ゴム栓の使用状態を示す斜視図である。
【図5】(A)従来の防水ゴム栓の断面図、(B)は防水ゴム栓同士が連結した状態の断面図である。
【符号の説明】
W 電線
10 防水ゴム栓
11 胴部
11a リップ部
12 固定部
13 電線挿通孔
13a 入り口
14 嵌合防止壁
15 電線案内部
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a waterproof rubber stopper, and more particularly, to preventing connection between rubber stoppers in a part feeder.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a waterproof rubber stopper used for a waterproof connector, one described in Japanese Patent Application Laid-Open No. 7-282893 is known. As a usage mode, as shown in FIG. 4, a terminal of an electric wire W which is crimped to and connected to the terminal fitting 1 is provided with a lip portion 2a on an outer periphery and a wire insertion hole 2b at the center. The waterproof rubber plug 2 is fitted to the outside. Then, the waterproof rubber plug 2 is fixed to the terminal fitting 1 by crimping the fixing part 2c at the front end of the waterproof rubber plug 2 so as to be wrapped by a pair of insulation barrels 1a protruding from the rear end of the terminal fitting 1. At the same time, the core wire Wa from which the tip of the electric wire W has been peeled off is crimped by the wire barrel 1b.
[0003]
Generally, this type of waterproof rubber stopper 2 is configured such that an electric wire W is inserted into the electric wire insertion hole 2b using an automatic machine when assembling a connector. The parts are supplied to the electric wire inserter one by one in a state where they are arranged in a required direction by using a parts feeder. A large number of waterproof rubber stoppers 2 are put into the bowl of the parts feeder, and the direction and posture of the waterproof rubber stopper 2 are adjusted while being transferred along a required route by vibration applied to the bowl. I have.
[0004]
[Problems to be solved by the invention]
In recent years, with the miniaturization of connectors, small-sized terminal fittings 1 and waterproof rubber plugs 2 have been used. For this reason, as shown in FIG. 5A, the outer diameter d1 of the end face of the fixing portion 2c at the tip of the waterproof rubber plug 2 may be set to be smaller than the inner diameter d2 of the entrance of the electric wire insertion hole 2b. That is, at the entrance of the electric wire insertion hole 2b, the outer diameter D of the electric wire W is substantially the same as the outer diameter D in order to facilitate the initial insertion of the electric wire W. The setting is smaller than the outer diameter D of the electric wire W. This is to prevent the fixing portion 2c from rolling up when the insulation barrel 1a is crimped to the outer periphery of the electric wire W, thereby preventing the insertion into the terminal insertion hole of the connector housing.
[0005]
For this reason, while the waterproof rubber plug 2 is being transported by the parts feeder, the vibrating action causes the tip of the fixing portion 2c to be connected to the wire insertion hole 2b of the other waterproof rubber plug 2 as shown in FIG. It may be in a state of being stabbed and connected to the entrance. When the waterproof rubber plugs 2 are connected to each other as described above, there is a problem that normal alignment and transfer in the parts feeder is hindered or trouble occurs in a subsequent process.
[0006]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a waterproof rubber stopper in which waterproof rubber stoppers are not connected to each other in a parts feeder.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, according to the present invention, a body provided with a lip on the outer periphery which is in close contact with an inner periphery of a terminal insertion hole of a connector housing, and an insulation of a terminal fitting extending from a tip of the body and being provided. A waterproof rubber plug comprising a fixed portion that is crimped to the outer periphery of the electric wire by a barrel, and having a wire insertion hole that can elastically adhere to the outer periphery of the electric wire at the axis of the body and the fixed portion,
On the inner peripheral portion of the entrance of the electric wire insertion hole, a fitting prevention wall in which the inner diameter of the electric wire insertion hole is smaller than the outer diameter of the distal end surface of the fixing portion is provided so as to protrude inward. Waterproof rubber stoppers are provided.
[0008]
According to the above configuration, when a large number of waterproof rubber plugs put into the parts feeder are aligned and transferred by vibration, even if the waterproof rubber plugs are arranged in series in the axial direction, the tip end surface of the fixing portion is different. Abuts against the fitting prevention wall provided at the entrance of the waterproof rubber plug, so that the waterproof rubber plugs can be prevented from being connected to each other.
The fitting prevention wall may be formed over the entire inner circumference, or may be formed partially at an interval.
[0009]
In addition, at the entrance of the electric wire insertion hole, an electric wire guide portion that expands in a tapered shape toward the end surface of the body portion is provided, and the fitting prevention wall is provided adjacent to the electric wire guide portion. Good.
With this configuration, when inserting the electric wire into the electric wire insertion hole, the initial insertion of the electric wire is not hindered by the fitting prevention wall, and the electric wire guide can easily position the electric wire tip during the initial insertion. can do.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view of a waterproof rubber plug 10 according to an embodiment of the present invention. The waterproof rubber plug 10 has a cylindrical body 11 having a large thickness and a thin wall integrally extending from a tip of the body 11. Of the fixing portion 12. An electric wire insertion hole 13 that can elastically adhere to the outer periphery of the electric wire W is formed at the axis of the waterproof rubber plug 10.
[0011]
A plurality of annular lip portions 11a are provided on the outer periphery of the body portion 11 so as to closely contact the inner periphery of the terminal insertion hole of the connector housing (not shown) at required intervals, while the lip portions 11a are provided on the inner periphery. Protrusions 11b are provided at alternate positions to improve the adhesion to the outer periphery of the electric wire W. The fixing portion 12 is a region for crimping and fixing the waterproof rubber plug 10 to the outer periphery of the electric wire W by an insulation barrel of a terminal fitting (not shown).
[0012]
The electric wire insertion hole 13 is set such that the inner diameter d3 of the fixing portion 12 is smaller than the inner diameter d2 of the body portion 11 and the elastic adhesion of the fixing portion 12 to the electric wire W is increased. More specifically, the inner diameter d3 of the fixed portion 12 and the outer diameter d1 of the distal end surface are tapered from the boundary with the body portion 11 toward the distal end of the fixed portion 12, and the diameter of the fixed portion 12 is further reduced. A chamfered portion 12a having a tapered tip is formed on the outer periphery of the tip. In the present embodiment, the inner diameters d1 and d2 of the wire insertion holes 13 in the body 11 and the fixing portion 12 are specifically, for example, d1 = 1.35 mm and d2 when the outer diameter D of the wire W is 1.4 mm. = 1.6 mm and d3 = 1.0 mm.
[0013]
At the inner peripheral portion of the entrance 13a of the electric wire insertion hole 13, fitting prevention is performed in which the inner diameter d2 of the electric wire insertion hole 13 projects in the axial direction so as to be smaller than the outer diameter d1 of the distal end surface of the fixing portion 12. A wall 14 protrudes. The fitting prevention wall 14 is preferably provided at a position slightly inward from the entrance 13a, and at a position adjacent to the fitting prevention wall 14 so as to continue the taper shape toward the end face of the body portion 11. An electric wire guide portion 15 that expands is provided. The inner diameter d4 of the expanded end face of the wire guide 15 is larger than the outer diameter D of the wire W to facilitate positioning at the time of initial insertion of the wire W. It is set large enough to fit and not connect before contact. In the present embodiment, the passage of the wire insertion hole 13 narrowed by the fitting prevention wall 14 is set to have an inner diameter d5 = 1.15 mm.
Note that the fitting prevention wall 14 may be formed over the entire inner circumference as shown in FIG. 2B, or may be formed with an interval 14a as shown in FIG. 2C. I have to. In the case where the space 14a is provided, the insertion resistance when the electric wire W is inserted can be reduced.
[0014]
Next, the operation of the present embodiment will be described.
When a large number of waterproof rubber plugs 10 are put into a parts feeder (not shown) and transported in a required posture by vibrating action, the waterproof rubber plugs 10 are successively connected to other waterproof rubber plugs 10 in front by vibrating action. It will be in the state which mutually presses.
At this time, as shown in FIG. 3, since the end face of the fixing portion 12 of the waterproof rubber plug 10 is tapered, it is inserted into the entrance 13a of the body 11 of the other waterproof rubber plug 10 connected in front and fitted. Try to match. However, since the end face of the fixing portion 12 is in contact with the fitting prevention wall 14 provided at the entrance 13a of the other waterproof rubber plug 10, it is not fitted further deeper, and thus the waterproof rubber plugs 10 are fitted with each other. Can be reliably prevented from being connected.
[0015]
【The invention's effect】
As is clear from the above description, according to the present invention, when the waterproof rubber plug is aligned and transferred while giving vibrations by the parts feeder, the end face of the fixed portion having a narrowed tip is located at the entrance of another waterproof rubber plug. Since the waterproof rubber plugs come into contact with the provided fitting prevention walls, they can be prevented from being connected in a fitted state. Therefore, in the subsequent steps of inserting the electric wire into the waterproof rubber plug and crimping the terminal fittings, it is possible to prevent various manufacturing troubles caused by the connection of the waterproof rubber plug.
[Brief description of the drawings]
FIG. 1 is a sectional view showing an embodiment of a waterproof rubber stopper according to the present invention.
2A is a front view of a waterproof rubber stopper, FIG. 2B is a right side view, and FIG. 2C is a right side view of a modification.
FIG. 3 is a cross-sectional view illustrating an operation of a fitting prevention wall.
FIG. 4 is a perspective view showing a usage state of a waterproof rubber stopper of a conventional example.
5A is a cross-sectional view of a conventional waterproof rubber plug, and FIG. 5B is a cross-sectional view of a state where the waterproof rubber plugs are connected to each other.
[Explanation of symbols]
W Electric wire 10 Waterproof rubber stopper 11 Body 11a Lip 12 Fixing portion 13 Wire insertion hole 13a Entrance 14 Fit prevention wall 15 Wire guide

Claims (2)

コネクタハウジングの端子挿入孔の内周に密着するリップ部を外周に備えた胴部と、該胴部の先端から延設されると共に端子金具のインシュレーションバレルによって電線の外周に圧着される固定部とからなり、上記胴部と固定部の軸心に上記電線の外周に弾性的に密着可能な電線挿通孔を備えた防水ゴム栓において、
上記電線挿通孔の入り口の内周部には電線挿通孔の内径を上記固定部の先端面の外径より小径となるようにした嵌合防止壁を内方へ向けて突設したことを特徴とする防水ゴム栓。
A body provided with a lip on the outer periphery in close contact with the inner periphery of the terminal insertion hole of the connector housing, and a fixing portion extending from the tip of the body and crimped to the outer periphery of the electric wire by an insulation barrel of the terminal fitting. In the waterproof rubber stopper having an electric wire insertion hole that can elastically adhere to the outer periphery of the electric wire at the axis of the body and the fixed portion,
On the inner peripheral portion of the entrance of the electric wire insertion hole, a fitting prevention wall in which the inner diameter of the electric wire insertion hole is smaller than the outer diameter of the distal end surface of the fixing portion is provided so as to protrude inward. And waterproof rubber stopper.
上記電線挿通孔の入り口には上記胴部の端面に向かってテーパー状に拡径する電線案内部を設けると共に、上記嵌合防止壁は上記電線案内部に隣接して設けるようにしている請求項1に記載の防水ゴム栓。An entrance of the electric wire insertion hole is provided with an electric wire guide that expands in a tapered shape toward an end face of the body, and the fitting prevention wall is provided adjacent to the electric wire guide. 2. The waterproof rubber stopper according to 1.
JP2002257627A 2002-09-03 2002-09-03 Waterproof rubber stopper Withdrawn JP2004095462A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002257627A JP2004095462A (en) 2002-09-03 2002-09-03 Waterproof rubber stopper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002257627A JP2004095462A (en) 2002-09-03 2002-09-03 Waterproof rubber stopper

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JP2004095462A true JP2004095462A (en) 2004-03-25

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JP2002257627A Withdrawn JP2004095462A (en) 2002-09-03 2002-09-03 Waterproof rubber stopper

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006147421A (en) * 2004-11-22 2006-06-08 Sumitomo Wiring Syst Ltd Rubber stopper
JP2013008454A (en) * 2011-06-22 2013-01-10 Sumitomo Wiring Syst Ltd Rubber plug

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006147421A (en) * 2004-11-22 2006-06-08 Sumitomo Wiring Syst Ltd Rubber stopper
JP2013008454A (en) * 2011-06-22 2013-01-10 Sumitomo Wiring Syst Ltd Rubber plug

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A300 Withdrawal of application because of no request for examination

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Effective date: 20060110