JP5278121B2 - Rubber stopper and connector - Google Patents

Rubber stopper and connector Download PDF

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Publication number
JP5278121B2
JP5278121B2 JP2009090909A JP2009090909A JP5278121B2 JP 5278121 B2 JP5278121 B2 JP 5278121B2 JP 2009090909 A JP2009090909 A JP 2009090909A JP 2009090909 A JP2009090909 A JP 2009090909A JP 5278121 B2 JP5278121 B2 JP 5278121B2
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peripheral side
inner peripheral
outer peripheral
rubber plug
side virtual
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JP2010244783A (en
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近弘 吉岡
康秋 中山
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Sumitomo Wiring Systems Ltd
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Sumitomo Wiring Systems Ltd
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Priority to JP2009090909A priority Critical patent/JP5278121B2/en
Priority to EP20100002515 priority patent/EP2254203B1/en
Priority to CN2010101509063A priority patent/CN101859960B/en
Priority to US12/752,360 priority patent/US7997916B2/en
Publication of JP2010244783A publication Critical patent/JP2010244783A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To obtain stable sealing performance, while suppressing the frictional resistance when a rubber plug is inserted inside a cavity. <P>SOLUTION: In a cross section including the axes of the rubber plug 40, the cavity 11, and electric wire 30, those regions of outer lip portions 44A and 44B which are not in a resiliently flexed state and which lie outside a virtual line 12L, corresponding to the inner periphery of the cavity 11, are stipulated as being outer virtual flexible portions 45A and 45B; these regions of inner lip portions 46A, 46B, and 46C which are not in a resiliently flexed state and which are inside of a virtual line 31L, corresponding to the outer periphery of the electric wire 30, are stipulated as being inner virtual flexible portions 47A, 47B, and 47C; and in the axial direction, at least some of the inner virtual flexible portions 47A, 47B, and 47C correspond to only a part of the outer virtual flexible portions 45A and 45B. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

本発明は、ゴム栓及びコネクタに関するものである。   The present invention relates to a rubber plug and a connector.

特許文献1には、端子金具に接続した電線に外嵌されるとともに、コネクタハウジングのキャビティ内に挿入されるゴム栓が開示されている。このゴム栓の外周には、キャビティの内周に対して弾性変形した状態で密着される外周側リップ部が形成されているとともに、ゴム栓の内周には、電線の外周に対して弾性変形した状態で密着される内周側リップ部が形成されている。   Patent Document 1 discloses a rubber plug that is externally fitted to an electric wire connected to a terminal fitting and is inserted into a cavity of a connector housing. The outer periphery of the rubber plug is formed with an outer peripheral lip portion that is in close contact with the inner periphery of the cavity while being elastically deformed, and the inner periphery of the rubber plug is elastically deformed with respect to the outer periphery of the electric wire. An inner peripheral lip portion that is in close contact with each other is formed.

特開2003−168514号公報JP 2003-168514 A

上記のゴム栓は、キャビティに挿入する際の摩擦抵抗を低減するために、外周側リップ部と内周側リップ部を軸線方向にずらした配置としており、ゴム栓の内周のうち外周側リップ部と対応する領域には内周側リップ部は存在しない。このような形態のゴム栓の場合、キャビティの内周から外周側リップ部に反力が作用している状態では、外周側リップ部が内周側へ逃げるように変位する虞があるため、外周側リップ部とキャビティの内周との間のシール性が不安定になることが懸念される。   In order to reduce frictional resistance when the rubber plug is inserted into the cavity, the outer peripheral lip and the inner peripheral lip are shifted in the axial direction. The inner peripheral lip portion does not exist in the region corresponding to the portion. In the case of such a rubber plug, there is a possibility that the outer peripheral lip portion may be displaced so as to escape to the inner peripheral side when the reaction force is applied from the inner periphery of the cavity to the outer peripheral lip portion. There is a concern that the sealing performance between the side lip portion and the inner periphery of the cavity becomes unstable.

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、ゴム栓をキャビティに挿入する際の摩擦抵抗の低減を図りながら、安定したシール性能を得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 obtain a stable sealing performance while reducing frictional resistance when a rubber plug is inserted into a cavity.

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、端子金具の後端部に接続した電線に外嵌され、前記端子金具と共にコネクタハウジングのキャビティ内に挿入されるようになっており、外周には、前記キャビティの内周に対して弾性撓みした状態で密着する外周側リップ部が形成され、内周には、前記電線の外周に対して弾性撓みした状態で密着する内周側リップ部が形成されているゴム栓であって、前記ゴム栓及び前記キャビティの軸線を含む断面において、弾性撓みしていない状態の前記外周側リップ部のうち、前記キャビティの内周に相当する仮想線よりも外周側の領域が、外周側仮想撓み部と規定され、前記ゴム栓及び前記電線の軸線を含む断面において、弾性撓みしていない状態の前記内周側リップ部のうち、変形していない状態の前記電線の外周に相当する仮想線よりも内周側の領域が、内周側仮想撓み部と規定され、前記内周側仮想撓み部は、軸線方向に間隔を空けて複数配置され、前記複数の内周側仮想撓み部の少なくとも一部が、軸線方向において1つの前記外周側仮想撓み部の前端部と後端部とに対応するように配置されているところに特徴を有する。 As a means for achieving the above object, the invention of claim 1 is adapted to be externally fitted to an electric wire connected to the rear end portion of the terminal fitting, and to be inserted into the cavity of the connector housing together with the terminal fitting. An outer peripheral lip portion that is in close contact with the inner periphery of the cavity in an elastically deformed state, and an inner periphery that is in close contact with the outer periphery of the electric wire in an elastically deformed state. A rubber plug in which a side lip portion is formed, and corresponds to the inner periphery of the cavity in the outer peripheral lip portion that is not elastically deformed in a cross section including the axis of the rubber plug and the cavity. A region on the outer peripheral side with respect to the imaginary line is defined as an outer peripheral side virtual bending portion, and the cross section including the rubber plug and the axis of the electric wire is deformed in the inner peripheral lip portion that is not elastically bent. Region of the inner circumferential side than the virtual line corresponding to the outer periphery of the electric wire in a state where there are no, is defined between the inner circumferential side virtual flexures, the inner peripheral side virtual flexures are more spaced axially A feature is that at least a part of the plurality of inner peripheral side virtual bending portions is arranged so as to correspond to a front end portion and a rear end portion of one outer peripheral side virtual bending portion in the axial direction.

請求項2の発明は、請求項1に記載のものにおいて、前記外周側仮想撓み部が、軸線方向に間隔を空けて複数配置されており、1つの前記内周側仮想撓み部の前端部と後端部が、軸線方向に隣り合う前後2つの前記外周側仮想撓み部と対応しているところに特徴を有する。   According to a second aspect of the present invention, in the first aspect of the present invention, a plurality of the outer peripheral side virtual bending portions are arranged at intervals in the axial direction, and a front end portion of one inner peripheral side virtual bending portion; The rear end portion is characterized in that it corresponds to the two front and rear outer side virtual deflection portions adjacent in the axial direction.

請求項3の発明は、請求項1又は請求項2に記載のものにおいて、前記外周側リップ部よりも前方には、前記端子金具の圧着部が外嵌される圧着用筒部が連なって設けられており、前記圧着用筒部の後端部には、周面を局部的に突出させた形態の補強部が形成されているところに特徴を有する。 According to a third aspect of the present invention, in the first or second aspect of the present invention, a crimping cylinder portion on which the crimping portion of the terminal fitting is fitted is provided in front of the outer peripheral lip portion. It is characterized in that a reinforcing portion having a form in which a peripheral surface is locally projected is formed at the rear end portion of the crimping cylinder portion.

請求項4の発明は、請求項3に記載のものにおいて、前記内周側リップ部が、前記圧着用筒部の後端部内周から突出した形態とされることで前記補強部として機能するようになっているところに特徴を有する。 A fourth aspect of the present invention, there is provided a connector described in claim 3, such that the inner circumferential lip portion may function as the reinforcing portion by being a protruding form the rear portion inner periphery of the crimping cylindrical portion It is characterized by

請求項5の発明は、請求項4に記載のものにおいて、前記補強部として機能する前記内周側リップ部の前記内周側仮想撓み部は、軸線方向において前記圧着部の後端部と対応しているところに特徴を有する。 According to a fifth aspect of the invention, in the fourth aspect of the invention, the inner peripheral side virtual bending portion of the inner peripheral side lip portion that functions as the reinforcing portion corresponds to the rear end portion of the crimping portion in the axial direction. It is characterized by

請求項6の発明は、請求項5に記載のものにおいて、前記内周側仮想撓み部の前端部が、軸線方向において前記圧着部の後端部と対応し、前記内周側仮想撓み部の後端部が、軸線方向において前記外周側仮想撓み部の前端部と対応しているところに特徴を有する。 The invention of claim 6 is the one described in claim 5, the front end portion of the inner peripheral-side virtual bending portion, corresponds to the rear end of the crimping portion in the axial direction, of the inner peripheral side virtual flexures The rear end portion is characterized in that it corresponds to the front end portion of the outer peripheral side virtual bending portion in the axial direction.

請求項7の発明は、キャビティを有するコネクタハウジングと、前記キャビティ内に挿入される端子金具と、前記端子金具の後端部に接続された電線と、前記電線に外嵌され、前記端子金具と共に前記キャビティ内に挿入されるゴム栓とを備え、前記ゴム栓の外周には、前記キャビティの内周に対して弾性撓みした状態で密着する外周側リップ部が形成され、前記ゴム栓の内周には、前記電線の外周に対して弾性撓みした状態で密着する内周側リップ部が形成されているコネクタであって、前記ゴム栓及び前記キャビティの軸線を含む断面において、弾性撓みしていない状態の前記外周側リップ部のうち、前記キャビティの内周に相当する仮想線よりも外周側の領域が、外周側仮想撓み部と規定され、前記ゴム栓及び前記電線の軸線を含む断面において、弾性撓みしていない状態の前記内周側リップ部のうち、変形していない状態の前記電線の外周に相当する仮想線よりも内周側の領域が、内周側仮想撓み部と規定され、前記内周側仮想撓み部が、軸線方向に間隔を空けて複数配置され、軸線方向において、前記複数の内周側仮想撓み部の少なくとも一部が、1つの前記外周側仮想撓み部の前端部と後端部とに対応するように配置されている構成としたところに特徴を有する。 According to a seventh aspect of the present invention, there is provided a connector housing having a cavity, a terminal fitting inserted into the cavity, an electric wire connected to a rear end portion of the terminal fitting, and an external fitting to the electric wire, together with the terminal fitting. A rubber plug to be inserted into the cavity, and an outer peripheral lip portion is formed on the outer periphery of the rubber plug so as to be in close contact with the inner periphery of the cavity while being elastically bent. Is a connector in which an inner peripheral lip portion is formed that is in close contact with the outer periphery of the electric wire in an elastically deformed state, and is not elastically deformed in a cross section including the rubber plug and the axis of the cavity. Of the outer peripheral lip portion in the state, a region on the outer peripheral side with respect to an imaginary line corresponding to the inner periphery of the cavity is defined as an outer peripheral virtual bending portion, and includes the rubber plug and the axis of the electric wire. In the inner peripheral lip portion that is not elastically bent, a region on the inner peripheral side with respect to an imaginary line corresponding to the outer periphery of the electric wire that is not deformed is defined as an inner peripheral virtual bent portion. is, the inner peripheral side virtual bending portion, a plurality of spaced axially, in the axial direction, at least a portion of said plurality of inner circumferential side virtual bending portion, of one of the outer peripheral-side virtual flexures It is characterized in that it is arranged to correspond to the front end portion and the rear end portion .

<請求項1及び請求項7の発明>
外周側リップ部の外周側仮想撓み部のうち内周側仮想撓み部と対応する領域では、キャビティの内周から外周側リップ部に作用した反力が、内周側仮想撓み部を介して電線により支承されるので、外周側リップ部によるシール性能が安定する。また、外周側仮想撓み部のうち内周側仮想撓み部と対応しない領域は、キャビティの内周から逃げるように変形するので、ゴム栓をキャビティに挿入する際の、外周側リップ部とキャビティの内周との間の摩擦抵抗が低減される。
また、外周側仮想撓み部は、その前端部と後端部の2カ所において内周側仮想撓み部により支承されるので、外周側仮想撓み部の姿勢が安定し、高いシール性能が発揮される。
<Invention of Claims 1 and 7 >
In the region corresponding to the inner peripheral side virtual bending portion in the outer peripheral side virtual bending portion of the outer peripheral side lip portion, the reaction force acting on the outer peripheral side lip portion from the inner periphery of the cavity is transmitted through the inner peripheral side virtual bending portion. Therefore, the sealing performance by the outer peripheral lip is stabilized. Moreover, since the area | region which does not correspond to an inner peripheral side virtual bending part among outer peripheral side virtual bending parts deform | transforms so that it may escape from the inner periphery of a cavity, when inserting a rubber stopper into a cavity, an outer peripheral side lip part and a cavity The frictional resistance with the inner circumference is reduced.
Moreover, since the outer peripheral side virtual bending part is supported by the inner peripheral side virtual bending part at two locations of the front end part and the rear end part thereof, the attitude of the outer peripheral side virtual bending part is stabilized and high sealing performance is exhibited. .

<請求項2の発明>
1つの内周側仮想撓み部が2つの外周側仮想撓み部と対応するようにしたので、1つの内周側仮想撓み部が1つの外周側仮想撓み部のみと対応する場合に比べると、内周側仮想撓み部の数が少なくて済み、ゴム栓の内周の形状が簡素化される。
<Invention of Claim 2>
Since one inner circumference side virtual bending portion corresponds to two outer circumference side virtual deflection portions, compared to the case where one inner circumference side virtual deflection portion corresponds to only one outer circumference side virtual deflection portion, The number of the peripheral virtual bending portions is small, and the shape of the inner periphery of the rubber plug is simplified.

請求項3の発明>
端子金具をキャビティに挿入する際には、外周側リップ部とキャビティの内周との間の摩擦抵抗のために、ゴム栓のうち圧着用筒部の後端と外周側リップ部との間の部分が軸線方向に過剰に伸び変形してしまうことが懸念される。その点、本発明では、圧着用筒部の後端部に、周面を局部的に突出させることにより肉厚とした補強部を形成しているので、ゴム栓の過剰な伸びが抑えられる。
<Invention of Claim 3 >
When inserting the terminal fitting into the cavity, due to the frictional resistance between the outer peripheral lip and the inner periphery of the cavity, the rubber plug between the rear end of the crimping cylinder and the outer peripheral lip There is a concern that the portion excessively extends and deforms in the axial direction. In that respect, in the present invention, since the reinforcing portion is formed thick at the rear end portion of the crimping cylinder portion by locally projecting the peripheral surface, excessive extension of the rubber plug is suppressed.

請求項4の発明>
内周側リップ部が補強部を兼ねているので、内周側リップ部とは別に専用の補強部を形成する場合に比べると、ゴム栓の内周の形状が簡素化される。
<Invention of Claim 4 >
Since the inner peripheral lip portion also serves as the reinforcing portion, the shape of the inner periphery of the rubber plug is simplified compared to the case where a dedicated reinforcing portion is formed separately from the inner peripheral lip portion.

請求項5の発明>
補強部として機能する内周側リップ部の内周側仮想撓み部は、軸線方向において圧着部の後端部と対応しているので、圧着用筒部の後端部は、電線と圧着部との間で径方向に確実に挟み付けられる。したがって、圧着用筒部の後端部が軸線方向に伸びる虞はない。
<Invention of Claim 5 >
Since the inner peripheral side virtual bending part of the inner peripheral side lip part functioning as the reinforcing part corresponds to the rear end part of the crimping part in the axial direction, the rear end part of the crimping cylinder part is composed of an electric wire, a crimping part, and Is securely clamped in the radial direction. Therefore, there is no possibility that the rear end portion of the crimping cylinder portion extends in the axial direction.

請求項6の発明>
内周側仮想撓み部は、圧着部と外周側仮想撓み部の両方に対応し、圧着用筒部の後端部の伸びを抑える機能と、外周側仮想撓み部に作用する反力を支承する機能とを兼ね備えているので、機能性に優れている。
<Invention of Claim 6 >
The inner circumference side virtual bending portion corresponds to both the crimping portion and the outer circumference side virtual bending portion, and supports the function of suppressing the rear end portion of the crimping cylinder portion and the reaction force acting on the outer circumference side virtual bending portion. Because it combines functions, it has excellent functionality.

実施形態1においてIn the first embodiment コネクタの断面図Cross section of connector 端子金具に電線とゴム栓を取り付けた状態をあらわす断面図Sectional view showing the condition that the wire and rubber plug are attached to the terminal fitting ゴム栓の断面図Cross section of rubber stopper 参考例の断面図Cross section of reference example

<実施形態1>
以下、本発明を具体化した実施形態1を図1乃至図4を参照して説明する。本実施形態のコネクタ1は、合成樹脂製のコネクタハウジング10と、金属製の端子金具20と、電線30と、ゴム栓40とを備えて構成されている。コネクタハウジング10には、その後端面に開口するキャビティ11が形成され、キャビティ11の内周の後端部は、軸線を前後方向に向けた円形断面のシール面12となっている。
<Embodiment 1>
A first embodiment of the present invention will be described below with reference to FIGS. The connector 1 according to this embodiment includes a connector housing 10 made of a synthetic resin, a metal terminal fitting 20, an electric wire 30, and a rubber plug 40. The connector housing 10 is formed with a cavity 11 that opens to the rear end surface thereof, and the rear end portion of the inner periphery of the cavity 11 is a sealing surface 12 having a circular cross section with the axis line in the front-rear direction.

端子金具20は、前後方向に細長く、後端部には、電線30を接続するための圧着部21が形成されている。圧着部21は、基板23の左右両側縁から一対のカシメ片24を立ち上げた周知の形態のものであり、圧着部21のうち前端側の部分はワイヤバレル部(図示省略)となっており、圧着部21のうち後端側の部分はインシュレーションバレル部22となっている。   The terminal fitting 20 is elongated in the front-rear direction, and a crimping portion 21 for connecting the electric wire 30 is formed at the rear end portion. The crimping part 21 has a well-known configuration in which a pair of caulking pieces 24 are raised from the left and right side edges of the substrate 23, and the front end part of the crimping part 21 is a wire barrel part (not shown). The portion on the rear end side of the crimping portion 21 is an insulation barrel portion 22.

電線30は、円形断面の導体(図示省略)を、導体の同心の円筒状をなす絶絶縁被覆31で包囲した形態であり、電線30の前端部は、圧着部21に接続されている。電線30と端子金具20を接続した状態では、導体がワイヤバレル部に対して導通可能に固着され、電線30のうち絶絶縁被覆31で覆われている領域の前端部が、インシュレーションバレル部22に対し後述するゴム栓40の圧着用筒部41と一緒に固着されている。かかる端子金具20は、電線30を接続した状態で、後方からキャビティ11内に挿入される。   The electric wire 30 is a form in which a conductor (not shown) having a circular cross section is surrounded by an insulating insulating coating 31 having a concentric cylindrical shape of the conductor, and the front end portion of the electric wire 30 is connected to the crimping portion 21. In the state in which the electric wire 30 and the terminal fitting 20 are connected, the conductor is fixed to the wire barrel portion so as to be conductive, and the front end portion of the region covered with the insulating coating 31 in the electric wire 30 is the insulation barrel portion 22. On the other hand, it is fixed together with a crimping cylinder part 41 of a rubber plug 40 described later. The terminal fitting 20 is inserted into the cavity 11 from behind with the electric wire 30 connected.

ゴム栓40は、全体として軸線を前後方向(シール面12の軸線と平行)に向けた円筒状をなし、電線30に外嵌される。ゴム栓40のうち前端側の領域は、インシュレーションバレル部22に固着される圧着用筒部41となっている。ゴム栓40のうち後端側の領域は、シール面12に対して面接触状態で内嵌されるとともに、電線30の外周に対して面接触状態で外嵌される嵌合部42となっている。ゴム栓40のうち圧着用筒部41と嵌合部42との間の中央領域は、シール部43となっている。   The rubber plug 40 as a whole has a cylindrical shape whose axis is directed in the front-rear direction (parallel to the axis of the seal surface 12), and is externally fitted to the electric wire 30. A region on the front end side of the rubber plug 40 is a crimping cylinder portion 41 fixed to the insulation barrel portion 22. A region on the rear end side of the rubber plug 40 is a fitting portion 42 that is fitted in a surface contact state with the seal surface 12 and is fitted in a surface contact state with the outer periphery of the electric wire 30. Yes. A central region between the crimping tube portion 41 and the fitting portion 42 of the rubber plug 40 is a seal portion 43.

圧着用筒部41の外周には、インシュレーションバレル部22の基板23と一対のカシメ片24とが巻き付くようにしてカシメ付けられている。このカシメ付けにより、電線30の前端部とゴム栓40と端子金具20の後端部とが一体化され、ゴム栓40と電線30とは、その軸線を合致させた同軸状の位置関係に保持される。一対のうち一方のカシメ片24は、圧着用筒部41の後端部に密着している。また、ゴム栓40が弾性変形していない状態において、圧着用筒部41の内周は、前方に向かって次第に小径となるようなテーパ状をなしており、圧着用筒部41の内径は。その全長に亘り電線30の外径よりも小さい寸法となっている。   The substrate 23 of the insulation barrel portion 22 and a pair of crimping pieces 24 are crimped around the outer periphery of the crimping cylinder portion 41. By this caulking, the front end portion of the electric wire 30, the rubber plug 40 and the rear end portion of the terminal fitting 20 are integrated, and the rubber plug 40 and the electric wire 30 are held in a coaxial positional relationship with their axes aligned. Is done. One caulking piece 24 of the pair is in close contact with the rear end portion of the crimping cylinder portion 41. Further, in a state where the rubber plug 40 is not elastically deformed, the inner periphery of the crimping cylinder portion 41 has a tapered shape that gradually decreases in diameter toward the front, and the inner diameter of the crimping cylinder portion 41 is. The overall length is smaller than the outer diameter of the electric wire 30.

ゴム栓40が弾性撓みしていない状態において、嵌合部42の外径は、キャビティ11のシール面12の内径と同じ寸法かそれよりも僅かに大きい寸法であり、嵌合部42の内径は、電線30の外径よりも小さい寸法である。したがって、ゴム栓40を電線30に外嵌してキャビティ11に挿入した状態では、嵌合部42の外周とキャビティ11のシール面12との間には隙間がなく、嵌合部42の内周と電線30の外周との間にも隙間は生じない。   In a state where the rubber plug 40 is not elastically bent, the outer diameter of the fitting portion 42 is the same as or slightly larger than the inner diameter of the seal surface 12 of the cavity 11, and the inner diameter of the fitting portion 42 is The dimension is smaller than the outer diameter of the electric wire 30. Therefore, in a state where the rubber plug 40 is externally fitted to the electric wire 30 and inserted into the cavity 11, there is no gap between the outer periphery of the fitting portion 42 and the seal surface 12 of the cavity 11, and the inner circumference of the fitting portion 42. And no gap between the outer periphery of the electric wire 30.

シール部43の外周には、第1外周側リップ部44Aと、第1外周側リップ部44Aよりも後方に位置する第2外周側リップ部44Bとが形成され、両外周側リップ部44A,44Bは、軸線方向(前後方向)に間隔を空けて隣り合うように配置されている。ここで、外周側リップ部44A,44Bの高さ方向の範囲を定義すると、径方向において、両外周側リップ部44A,44Bの間の谷間(シール部43の最小外径部)から各外周側リップ部の頂上(シール部43の最大外径部)までを、外周側リップ部44A,44Bの高さ寸法Haとして規定する(図1を参照)。   A first outer peripheral lip portion 44A and a second outer peripheral lip portion 44B positioned rearward of the first outer peripheral lip portion 44A are formed on the outer periphery of the seal portion 43, and both outer peripheral lip portions 44A and 44B are formed. Are arranged adjacent to each other with an interval in the axial direction (front-rear direction). Here, if the range in the height direction of the outer peripheral lip portions 44A and 44B is defined, in the radial direction, from the valley between the outer peripheral lip portions 44A and 44B (the smallest outer diameter portion of the seal portion 43), The top of the lip portion (the maximum outer diameter portion of the seal portion 43) is defined as the height dimension Ha of the outer peripheral lip portions 44A and 44B (see FIG. 1).

ゴム栓40が弾性撓みしていない自由状態において、両外周側リップ部44A,44Bの最大外径寸法は、互いに同じであって、上記したキャビティ11のシール面12の内径よりも大きい寸法とされている。そして、ゴム栓40及びシール面12の軸線を含む断面において、弾性撓みしていない状態の各外周側リップ部44A,44Bのうち、キャビティ11の内周(シール面12)に相当する仮想線12Lよりも外周側の領域は、夫々、第1外周側仮想撓み部45A、第2外周側仮想撓み部45Bと規定されている(図1を参照)。   In a free state in which the rubber plug 40 is not elastically bent, the maximum outer diameter dimensions of the outer peripheral lip portions 44A and 44B are the same as each other and are larger than the inner diameter of the seal surface 12 of the cavity 11 described above. ing. And in the cross section containing the axis line of the rubber plug 40 and the seal surface 12, the imaginary line 12L corresponding to the inner periphery (seal surface 12) of the cavity 11 among the outer peripheral lip portions 44A and 44B that are not elastically bent. The regions on the outer peripheral side are defined as the first outer peripheral side virtual deflecting portion 45A and the second outer peripheral side virtual deflecting portion 45B, respectively (see FIG. 1).

ゴム栓40の軸線を含む断面において、第1外周側仮想撓み部45Aと第2外周側仮想撓み部45Bは、その形状、高さ寸法ha及び軸線方向の寸法Laが互いに同じとなっている。また、断面において、外周側仮想撓み部45A,45Bの外周形状は、概ね一定の曲率の円弧形をなす。本実施形態では、径方向において外周側リップ部44A,44Bの高さ寸法Haのうち、外周側仮想撓み部45A,45Bの高さhaが占める割合は、約75%であるが、この割合は任意に設定することができる。また、前後両外周側仮想撓み部45A,45Bの軸線方向のピッチと、1つの外周側仮想撓み部45A,45Bの軸線方向の長さ寸法Laとの比率は、約10:7であるが、この比率は任意に設定することができる。また、外周側仮想撓み部45A,45Bの高さ寸法haと軸線方向の長さ寸法Laとの比率は、約2:7であるが、この比率は任意に設定することができる。   In the cross section including the axis line of the rubber plug 40, the first outer peripheral side virtual deflecting part 45A and the second outer peripheral side virtual deflecting part 45B have the same shape, height dimension ha, and axial direction dimension La. In addition, in the cross section, the outer peripheral shape of the outer peripheral side virtual bending portions 45A and 45B has an arc shape with a substantially constant curvature. In the present embodiment, the ratio of the height ha of the outer peripheral side virtual bending portions 45A and 45B to the height dimension Ha of the outer peripheral lip portions 44A and 44B in the radial direction is about 75%. It can be set arbitrarily. Further, the ratio between the axial pitch of the front and rear outer peripheral virtual deflection portions 45A and 45B and the axial length La of one outer peripheral virtual deflection portion 45A and 45B is about 10: 7. This ratio can be set arbitrarily. Further, the ratio between the height dimension ha of the outer peripheral side virtual deflecting portions 45A and 45B and the length dimension La in the axial direction is about 2: 7, but this ratio can be set arbitrarily.

シール部43の内周には、第1内周側リップ部46Aと、第1内周側リップ部46Aよりも後方に位置する第2内周側リップ部46Bと、第2内周側リップ部46Bよりも後方に位置する第3内周側リップ部46Cとが形成され、これらの内周側リップ部46A,46B,46Cは、軸線方向(前後方向)に間隔を空けて隣り合うように一定のピッチで配置されている。軸線方向における外周側リップ部44A,44Bのピッチと内周側リップ部46A,46B,46Cのピッチは同じである。ここで、内周側リップ部46A,46B,46Cの高さ方向の範囲を定義すると、径方向において、隣り合う内周側リップ部46A,46B,46Cの間の谷間(シール部43の最大内径部)から各内周側リップ部46A,46B,46Cの頂上(シール部43の最小内径部)までを、内周側リップ部46A,46B,46Cの高さ寸法Hbとして規定する。   On the inner periphery of the seal portion 43, there are a first inner peripheral lip portion 46A, a second inner peripheral lip portion 46B located behind the first inner peripheral lip portion 46A, and a second inner peripheral lip portion. A third inner peripheral lip portion 46C located rearward of 46B is formed, and these inner peripheral lip portions 46A, 46B, and 46C are fixed so as to be adjacent to each other with an interval in the axial direction (front-rear direction). Are arranged at a pitch of. The pitch of the outer peripheral lip portions 44A, 44B and the pitch of the inner peripheral lip portions 46A, 46B, 46C in the axial direction are the same. Here, when the range in the height direction of the inner peripheral lip portions 46A, 46B, and 46C is defined, the valley between the adjacent inner peripheral lip portions 46A, 46B, and 46C in the radial direction (the maximum inner diameter of the seal portion 43). Part) to the top of each inner peripheral lip part 46A, 46B, 46C (minimum inner diameter part of the seal part 43) is defined as the height dimension Hb of the inner peripheral lip parts 46A, 46B, 46C.

ゴム栓40が弾性撓みしていない自由状態において、全ての内周側リップ部46A,46B,46Cの最小内径寸法は、変形していない状態の電線30の外径よりも小さい寸法とされている。そして、ゴム栓40及び電線30の軸線を含む断面において、弾性撓みしていない状態の第1〜第3内周側リップ部46A,46B,46Cのうち、変形していない状態の電線30(絶縁被覆31)の外周に相当する仮想線31Lよりも内周側の領域は、夫々、第1〜第3内周側仮想撓み部47A,47B,47Cと規定されている(図1を参照)。   In the free state in which the rubber plug 40 is not elastically bent, the minimum inner diameter of all the inner peripheral lip portions 46A, 46B, 46C is smaller than the outer diameter of the electric wire 30 in the undeformed state. . And in the cross section containing the axis line of rubber plug 40 and electric wire 30, electric wire 30 (insulation) in the state which is not deformed among the 1st-the 3rd inner circumference side lip parts 46A, 46B, and 46C in the state where it is not elastically bent. The regions on the inner peripheral side with respect to the virtual line 31L corresponding to the outer periphery of the covering 31) are defined as first to third inner peripheral virtual deflecting portions 47A, 47B, 47C, respectively (see FIG. 1).

ゴム栓40の軸線を含む断面において、第2内周側仮想撓み部47Bと第3内周側仮想撓み部47Cは、その形状、高さ寸法hb及び軸線方向の寸法Lbが互いに同じとなっている。また、断面において、第2内周側仮想撓み部47Bと第3内周側仮想撓み部47Cの内周形状は、概ね一定の曲率の円弧形をなす。第1内周側仮想撓み部47Aは、その前端部が圧着用筒部41に連なっているため、第1内周側仮想撓み部47Aの前端部の内周形状と軸線方向の寸法は、第2内周側仮想撓み部47B及び第3内周側仮想撓み部47Cとは異なっている。第1内周側仮想撓み部47Aの前端部を除いた大部分の内周形状は、第2内周側仮想撓み部47B及び第3内周側仮想撓み部47Cと同様、概ね一定の曲率の円弧形をなす。但し、第1内周側仮想撓み部47Aの高さ寸法hbは、第2内周側仮想撓み部47B及び第3内周側仮想撓み部47Cと同じである。   In the cross section including the axis of the rubber plug 40, the second inner peripheral side virtual deflecting portion 47B and the third inner peripheral side virtual deflecting portion 47C have the same shape, height dimension hb, and axial dimension Lb. Yes. In addition, in the cross section, the inner peripheral shapes of the second inner peripheral side virtual deflecting portion 47B and the third inner peripheral side virtual deflecting portion 47C have an arc shape with a substantially constant curvature. Since the front end portion of the first inner peripheral side virtual bending portion 47A is connected to the crimping cylinder portion 41, the inner peripheral shape and the axial dimension of the front end portion of the first inner peripheral side virtual bending portion 47A are The 2nd inner circumference side virtual bending part 47B and the third inner circumference side virtual bending part 47C are different. Most of the inner peripheral shape excluding the front end portion of the first inner peripheral side virtual bending portion 47A has a substantially constant curvature, like the second inner peripheral side virtual bending portion 47B and the third inner peripheral side virtual bending portion 47C. It has an arc shape. However, the height dimension hb of the first inner circumference side virtual deflection section 47A is the same as that of the second inner circumference side virtual deflection section 47B and the third inner circumference side virtual deflection section 47C.

本実施形態では、径方向において内周側リップ部46A,46B,46Cの高さ寸法Hbのうち、内周側仮想撓み部47A,47B,47Cの高さhbが占める割合は、約78%であるが、この割合は任意に設定することができる。また、隣り合う内周側仮想撓み部47A,47B,47Cの軸線方向のピッチと、1つの内周側仮想撓み部47A,47B,47Cの軸線方向の寸法Lbとの比率は、約10:7であるが、この比率は任意に設定することができる。また、内周側仮想撓み部47A,47B,47Cの高さ寸法hbと軸線方向の長さ寸法Lbとの比率は、約1:3であるが、この比率は任意に設定することができる。   In the present embodiment, the ratio of the height hb of the inner peripheral side virtual bending portions 47A, 47B, 47C to the height dimension Hb of the inner peripheral side lip portions 46A, 46B, 46C in the radial direction is about 78%. However, this ratio can be set arbitrarily. Further, the ratio between the pitch in the axial direction of the adjacent inner peripheral side virtual bending portions 47A, 47B, 47C and the dimension Lb in the axial direction of one inner peripheral side virtual bending portion 47A, 47B, 47C is about 10: 7. However, this ratio can be set arbitrarily. Further, the ratio between the height dimension hb of the inner peripheral side virtual bending portions 47A, 47B, and 47C and the length dimension Lb in the axial direction is about 1: 3, but this ratio can be set arbitrarily.

本実施形態では、径方向において、シール部43の最大外径部(外周側リップ部の頂上)から最少内径部(内周側リップ部46A,46B,46Cの頂上)までの肉厚寸法Tのうち、外周側仮想撓み部45A,45Bの高さhaが占める割合は、約13%であるが、この割合は任意に設定することができる。また、シール部43の肉厚寸法Tのうち、内周側仮想撓み部47A,47B,47Cの高さhbが占める割合は、約%15であるが、この割合は任意に設定することができる。径方向における外周側仮想撓み部45A,45Bの高さ寸法Haと内周側仮想撓み部47A,47B,47Cの高さ寸法Hbとの比率は、約6:7であるが、この比率は任意に設定することができる。また、軸線方向における外周側仮想撓み部45A,45Bの全長寸法Laと内周側仮想撓み部47B,47Cの全長寸法Lbとの比率は、約10:11であるが、この比率は任意に設定することができる。   In the present embodiment, in the radial direction, the wall thickness dimension T from the maximum outer diameter portion (the top of the outer peripheral lip portion) of the seal portion 43 to the minimum inner diameter portion (the top of the inner peripheral lip portions 46A, 46B, 46C). Among these, the ratio of the height ha of the outer peripheral side virtual bending portions 45A and 45B is about 13%, but this ratio can be arbitrarily set. Further, in the wall thickness dimension T of the seal portion 43, the ratio occupied by the height hb of the inner peripheral side virtual bending portions 47A, 47B, 47C is about% 15, but this ratio can be arbitrarily set. . The ratio of the height dimension Ha of the outer peripheral side virtual bending parts 45A and 45B and the height dimension Hb of the inner peripheral side virtual bending parts 47A, 47B and 47C in the radial direction is about 6: 7, but this ratio is arbitrary. Can be set to Further, the ratio between the overall length La of the outer peripheral side virtual deflection portions 45A and 45B and the total length Lb of the inner peripheral side virtual deflection portions 47B and 47C in the axial direction is about 10:11, but this ratio is arbitrarily set. can do.

また、ゴム栓40が弾性撓みしていない状態では、外周側リップ部44A,44Bと内周側リップ部46A,46B,46Cが軸線方向において部分的に重なる(オーバーラップする)ような大きさ及び配置とされている。したがって、外周側仮想撓み部45A,45Bと内周側仮想撓み部47A,47B,47Cも、軸線方向において部分的に重なっている。ここで、外周側仮想撓み部45A,45Bと内周側仮想撓み部47A,47B,47Cが軸線方向において部分的に重なるとは、外周側仮想撓み部45A,45Bの一部と内周側仮想撓み部47A,47B,47Cの一部が径方向に並ぶように配置されることを意味する。   Further, when the rubber plug 40 is not elastically bent, the outer peripheral lip portions 44A and 44B and the inner peripheral lip portions 46A, 46B and 46C partially overlap (overlap) in the axial direction. It is supposed to be arranged. Therefore, the outer peripheral side virtual bending parts 45A and 45B and the inner peripheral side virtual bending parts 47A, 47B and 47C also partially overlap in the axial direction. Here, the fact that the outer peripheral side virtual bending parts 45A, 45B and the inner peripheral side virtual bending parts 47A, 47B, 47C partially overlap in the axial direction means that a part of the outer peripheral side virtual bending parts 45A, 45B and the inner peripheral side virtual bending part. It means that a part of the bending portions 47A, 47B, 47C is arranged in the radial direction.

具体的には、第1内周側仮想撓み部47Aの後端部と第1外周側仮想撓み部45Aの前端部とが重なり、第1外周側仮想撓み部45Aの後端部と第2内周側仮想撓み部47Bの前端部とが重なり、第2内周側仮想撓み部47Bの後端部と第2外周側仮想撓み部45Bの前端部とが重なり、第2外周側仮想撓み部45Bの後端部と第3内周側仮想撓み部47Cの前端部とが重なっている。   Specifically, the rear end portion of the first inner peripheral side virtual bending portion 47A and the front end portion of the first outer peripheral side virtual bending portion 45A overlap, and the rear end portion of the first outer peripheral side virtual bending portion 45A and the second inner portion are overlapped. The front end portion of the circumferential virtual deflection portion 47B overlaps, the rear end portion of the second inner circumferential virtual deflection portion 47B and the front end portion of the second outer circumferential virtual deflection portion 45B overlap, and the second outer circumferential virtual deflection portion 45B. The rear end portion and the front end portion of the third inner peripheral side virtual bending portion 47C overlap.

この外周側仮想撓み部45A,45Bと内周側仮想撓み部47A,47B,47Cの重なりの形態によれば、(a)1つの外周側仮想撓み部45A,45Bに対しその前端部と後端部の両端部と対応するように、2つの内周側仮想撓み部47Aと47B,又は47Bと47Cが軸線方向に間隔を空けて配置されているという技術思想と、(b)1つの第2内周側仮想撓み部47Bの前端部と後端部が、軸線方向に隣り合う2つの外周側仮想撓み部45A,45Bと対応しているという技術思想と、(c)2つの外周側仮想撓み部45A,45Bの双方に対して必ずいずかの内周側仮想撓み部47A,47B,47Cが対応するという技術思想と、(d)3つの内周側仮想撓み部47A,47B,47Cの全てが必ずいずれかの外周側仮想撓み部45A,45Bと対応するという技術思想が抽出される。   According to the form of overlap between the outer peripheral side virtual deflecting portions 45A and 45B and the inner peripheral side virtual deflecting portions 47A, 47B and 47C, (a) the front end portion and the rear end portion of one outer peripheral side virtual deflecting portion 45A and 45B. A technical idea that the two inner peripheral virtual bending portions 47A and 47B or 47B and 47C are arranged at intervals in the axial direction so as to correspond to both ends of the portion; and (b) one second A technical idea that the front end portion and the rear end portion of the inner peripheral side virtual bending portion 47B correspond to the two outer peripheral side virtual bending portions 45A and 45B adjacent in the axial direction; and (c) two outer peripheral side virtual deflections. The technical idea that one of the inner peripheral side virtual bending portions 47A, 47B, 47C always corresponds to both of the portions 45A, 45B, and (d) of the three inner peripheral side virtual bending portions 47A, 47B, 47C. Everything must be one of the outer virtual deflections 45A, technical idea corresponding to 45B are extracted.

本実施形態では、軸線方向において、外周側仮想撓み部45A,45Bの全長Laのうち、その前端部において第1内周側仮想撓み部47A及び第2内周側仮想撓み部47Bの後端部と重なる領域LFが占める割合は、約25%であるが、この割合は任意に設定することができる。また、軸線方向において、外周側仮想撓み部45A,45Bの全長Laのうち、その後端部において第2内周側仮想撓み部47B及び第3内周側仮想撓み部47Cの前端部と重なる領域LRが占める割合は、約30%であるが、この割合は任意に設定することができる。   In the present embodiment, in the axial direction, out of the total length La of the outer peripheral side virtual deflecting portions 45A and 45B, the rear end portions of the first inner peripheral side virtual deflecting portion 47A and the second inner peripheral side virtual deflecting portion 47B at the front end portion thereof. The ratio of the region LF that overlaps with LF is about 25%, but this ratio can be set arbitrarily. Further, in the axial direction, out of the total length La of the outer peripheral side virtual bending portions 45A and 45B, a region LR that overlaps the front end portions of the second inner peripheral side virtual bending portion 47B and the third inner peripheral side virtual bending portion 47C at the rear end portion. The proportion occupied by is about 30%, but this proportion can be arbitrarily set.

3つの内周側リップ部46A,46B,46Cのうち最も前に位置する第1内周側リップ部46Aは、圧着用筒部41の後端部の撓み剛性を高めるための補強部として機能する。この第1内周側リップ部46Aは、ゴム栓40の内周を局部的に突出させた形態であるが、軸線方向における第1内周側リップ部46Aの形成範囲は、圧着用筒部41のうちカシメ片24が外嵌される領域の後端(つまり、圧着用筒部41の後端)よりも少し前方の位置から、圧着用筒部41の後端よりも後方の位置に亘る範囲となっている。つまり、第1内周側仮想撓み部47Aの前端側の部分は、軸線方向においてカシメ片24の後端部と重なるように配置されている。   Of the three inner peripheral lip portions 46A, 46B, and 46C, the first inner peripheral lip portion 46A located at the forefront functions as a reinforcing portion for increasing the bending rigidity of the rear end portion of the crimping tube portion 41. . The first inner peripheral lip portion 46A has a form in which the inner periphery of the rubber plug 40 is locally protruded, but the first inner peripheral lip portion 46A in the axial direction is formed in a crimping tube portion 41. A range from a position slightly ahead of the rear end of the area in which the crimping piece 24 is fitted (that is, the rear end of the crimping cylinder part 41) to a position behind the rear end of the crimping cylinder part 41. It has become. That is, the front end side portion of the first inner peripheral side virtual bending portion 47A is disposed so as to overlap the rear end portion of the crimping piece 24 in the axial direction.

次に、本実施形態の作用を説明する。ゴム栓40を電線30に外嵌して圧着部21に固着すると、内周側仮想撓み部47A,47B,47Cが弾性撓みした状態で電線30の外周に密着し、電線30の外周とゴム栓40の内周との隙間が液密状にシールされる。次に、キャビティ11内に端子金具20とゴム栓40を挿入すると、外周側仮想撓み部45A,45Bが弾性撓みした状態でシール面12に密着し、ゴム栓40の外周とシール面12(キャビティ11の内周)との隙間が液密状にシールされる。   Next, the operation of this embodiment will be described. When the rubber plug 40 is externally fitted to the electric wire 30 and fixed to the crimping portion 21, the inner peripheral side virtual bending portions 47A, 47B, 47C are in close contact with the outer periphery of the electric wire 30 in an elastically bent state, and the outer periphery of the electric wire 30 and the rubber plug A gap between the inner periphery of 40 is sealed in a liquid-tight manner. Next, when the terminal fitting 20 and the rubber plug 40 are inserted into the cavity 11, the outer peripheral side virtual bending portions 45A and 45B are in close contact with the seal surface 12 in an elastically deformed state, and the outer periphery of the rubber plug 40 and the seal surface 12 (cavity) 11 is sealed in a liquid-tight manner.

このようにゴム栓40が弾性撓みしている状態では、外周側仮想撓み部45A,45Bと内周側仮想撓み部47A,47B,47Cは、部分的に重なった状態を保つが、ゴム栓40が弾性撓みしていない状態と比べると、外周側仮想撓み部45A,45Bと内周側仮想撓み部47A,47B,47Cは径方向に潰れて軸線方向に伸ばされるので、外周側仮想撓み部45A,45Bと内周側仮想撓み部47A,47B,47Cの軸線方向の重なり寸法LF,LRも、弾性撓みしていない状態に比べて大きくなる。   Thus, in the state where the rubber plug 40 is elastically bent, the outer peripheral side virtual bent portions 45A and 45B and the inner peripheral side virtual bent portions 47A, 47B and 47C are kept partially overlapped. Compared with the state in which the outer peripheral side is not elastically bent, the outer peripheral side virtual bent portions 45A, 45B and the inner peripheral side virtual bent portions 47A, 47B, 47C are crushed in the radial direction and extended in the axial direction. , 45B and the inner circumference side virtual deflecting portions 47A, 47B, 47C in the axial direction overlap dimensions LF, LR are also larger than in a state where they are not elastically deformed.

外周側仮想撓み部45A,45Bのうち内周側仮想撓み部47A,47B,47Cと対応する領域では、シール面12(キャビティ11の内周)から外周側リップ部に作用した反力が、内周側仮想撓み部47A,47B,47Cを介して電線30により支承されるので、外周側リップ部44A,44Bによるシール性能が安定する。また、外周側仮想撓み部45A,45Bのうち内周側仮想撓み部47A,47B,47Cと対応しない領域は、シール面12から径方向内側へ逃げるように変形するので、ゴム栓40をキャビティ11に挿入する際の、外周側リップ部とキャビティ11の内周との間の摩擦抵抗が低減される。   In the region corresponding to the inner peripheral side virtual deflecting portions 47A, 47B, 47C in the outer peripheral side virtual deflecting portions 45A, 45B, the reaction force acting on the outer peripheral side lip portion from the seal surface 12 (the inner periphery of the cavity 11) Since it is supported by the electric wire 30 through the peripheral virtual bending portions 47A, 47B, 47C, the sealing performance by the outer peripheral lip portions 44A, 44B is stabilized. Moreover, since the area | region which does not correspond to inner peripheral side virtual bending part 47A, 47B, 47C among outer peripheral side virtual bending part 45A, 45B deform | transforms so that it may escape to a radial inside from the sealing surface 12, rubber plug 40 is made into cavity 11 The frictional resistance between the outer peripheral lip portion and the inner periphery of the cavity 11 when inserted into the rim is reduced.

また、第2内周側仮想撓み部47Bが2つの外周側仮想撓み部45A,45Bと対応するようにしたので、全ての内周側仮想撓み部がいずれも1つの外周側仮想撓み部のみと対応する場合に比べると、内周側仮想撓み部47A,47B,47Cの数が少なくて済むので、ゴム栓40の内周の形状が簡素化される。   In addition, since the second inner peripheral side virtual bending part 47B corresponds to the two outer peripheral side virtual bending parts 45A, 45B, all the inner peripheral side virtual bending parts are only one outer peripheral side virtual bending part. Compared to the corresponding case, since the number of inner peripheral side virtual bending portions 47A, 47B, 47C is small, the shape of the inner periphery of the rubber plug 40 is simplified.

また、外周側仮想撓み部45A,45Bは、その前端部と後端部の2カ所において内周側仮想撓み部47A,47B,47Cにより支承されるので、外周側仮想撓み部45A,45Bの姿勢が安定する。これにより、電線30のうちコネクタハウジング10外へ導出されている部分に曲げ力が作用した場合でも、外周側リップ部44A,44B及び外周側仮想撓み部45A,45Bの不正な変形が抑制され、高いシール性能が発揮される。   Further, the outer peripheral side virtual deflecting portions 45A and 45B are supported by the inner peripheral side virtual deflecting portions 47A, 47B and 47C at the two positions of the front end portion and the rear end portion thereof, and therefore the postures of the outer peripheral side virtual deflecting portions 45A and 45B. Is stable. Thereby, even when a bending force acts on a portion of the electric wire 30 led out of the connector housing 10, unauthorized deformation of the outer peripheral lip portions 44A and 44B and the outer peripheral virtual deflection portions 45A and 45B is suppressed, High sealing performance is demonstrated.

また、端子金具20をキャビティ11に挿入する際には、外周側リップ部44A,44Bとキャビティ11の内周(シール面12)との間の摩擦抵抗のために、ゴム栓40のうち圧着用筒部41の後端と第1外周側リップ部44A(シール部43の前端部)との間の部分が軸線方向に過剰に伸び変形してしまうことが懸念される。その点、本実施形態では、圧着用筒部41の後端部に、内周面を局部的に突出させることにより肉厚とした第1内周側仮想撓み部47Aを形成し、この第1内周側仮想撓み部47Aを圧着用筒部41の撓み剛性を高めるための補強部として機能させているので、ゴム栓40の過剰な伸びが抑えられる。   Further, when the terminal fitting 20 is inserted into the cavity 11, for the purpose of friction resistance between the outer peripheral side lip portions 44 </ b> A and 44 </ b> B and the inner periphery (seal surface 12) of the cavity 11, the rubber plug 40 is used for crimping. There is a concern that the portion between the rear end of the tube portion 41 and the first outer peripheral lip portion 44A (the front end portion of the seal portion 43) excessively extends and deforms in the axial direction. In this regard, in the present embodiment, the first inner peripheral side virtual bending portion 47A which is thickened by locally projecting the inner peripheral surface is formed at the rear end portion of the crimping cylinder portion 41. Since the inner peripheral side virtual bending portion 47A functions as a reinforcing portion for increasing the bending rigidity of the crimping cylinder portion 41, excessive extension of the rubber plug 40 can be suppressed.

また、この補強部として機能する第1内周側仮想撓み部47Aは、軸線方向においてカシメ片24の後端部と対応しているので、圧着用筒部41の後端部は、電線30とカシメ片24との間で径方向に確実に挟み付けられる。したがって、圧着用筒部41の後端部が軸線方向に伸びる虞はない。   Further, since the first inner peripheral side virtual bending portion 47A functioning as the reinforcing portion corresponds to the rear end portion of the crimping piece 24 in the axial direction, the rear end portion of the crimping cylinder portion 41 is connected to the electric wire 30. The crimping piece 24 is securely sandwiched in the radial direction. Therefore, there is no possibility that the rear end portion of the crimping cylinder portion 41 extends in the axial direction.

また、第1内周側仮想撓み部47Aは補強部を兼ねているので、内周側リップ部とは別に専用の補強部を形成する場合に比べて、ゴム栓40の内周の形状が簡素化されている。しかも、この第1内周側仮想撓み部47Aは、圧着用筒部41の後端部の伸びを抑える補強部としての機能だけでなく、第1外周側仮想撓み部45Aの前端部とオーバーラップすることでその第1外周側仮想撓み部45Aに作用する反力を支承する機能とを兼ね備えているので、機能性に優れている。   Further, since the first inner peripheral side virtual deflecting portion 47A also serves as a reinforcing portion, the inner peripheral shape of the rubber plug 40 is simpler than when a dedicated reinforcing portion is formed separately from the inner peripheral side lip portion. It has become. Moreover, the first inner peripheral side virtual bending portion 47A not only functions as a reinforcing portion that suppresses the extension of the rear end portion of the crimping cylinder portion 41, but also overlaps with the front end portion of the first outer peripheral side virtual bending portion 45A. Since it has the function to support the reaction force which acts on the 1st outer peripheral side virtual bending part 45A by doing, it is excellent in functionality.

<参考例>
次に、参考例を図5を参照して説明する。本参考例のコネクタ2は、キャビティ50のシール面51の形状を上記実施形態1とは異なる構成とした点に特徴を有している。その他の構成の本質的な部分については上記実施形態1と同じであるため、同じ構成については、同一符号を付し、構造、作用及び効果の説明は省略する。
<Reference example>
Next, a reference example will be described with reference to FIG. The connector 2 of the present reference example is characterized in that the shape of the sealing surface 51 of the cavity 50 is different from that of the first embodiment. Since the other essential parts are the same as those in the first embodiment, the same reference numerals are given to the same parts, and the description of the structure, operation, and effects is omitted.

上記実施形態1では、シール面12の内径が全長(前端から後端に亘って)一定の寸法であったのに対し、本参考例では、シール面51の後端側部分の内径が、後端側に向かって次第に同心状に縮径した形態のテーパ面52となっている。テーパ面52の前端の内径寸法は、シール面51の内径と同じ寸法である。一方、ゴム栓60は、上記実施形態1と同様に、外周に外周側リップ部61が形成され、内周に内周側リップ部62が形成されたものである。テーパ面52は、ゴム栓60の外周に対して強く食い込んだ状態となっている。。   In Embodiment 1 above, the inner diameter of the seal surface 12 is a constant length (from the front end to the rear end), whereas in this reference example, the inner diameter of the rear end side portion of the seal surface 51 is The tapered surface 52 has a diameter gradually reduced concentrically toward the end side. The inner diameter of the front end of the tapered surface 52 is the same as the inner diameter of the seal surface 51. On the other hand, the rubber plug 60 has an outer peripheral lip portion 61 formed on the outer periphery and an inner peripheral lip portion 62 formed on the inner periphery, as in the first embodiment. The taper surface 52 is in a state where it is strongly biting into the outer periphery of the rubber plug 60. .

かかる形態によれば、電線30のうちキャビティ50の外部へ導出されている部分が引っ張られ、電線30のうちゴム栓60に挿通されている部分が湾曲変形したときには、ゴム栓60の外周のうち曲げの外側の領域がテーパ面52から逃げる方向へ変位しても、テーパ面52はゴム栓60に密着する(食い込む)状態に保たれる。これにより、高いシール性能が保持される。   According to this embodiment, when the portion of the electric wire 30 that is led out of the cavity 50 is pulled and the portion of the electric wire 30 that is inserted through the rubber plug 60 is bent and deformed, of the outer periphery of the rubber plug 60 Even if the region outside the bend is displaced in a direction to escape from the tapered surface 52, the tapered surface 52 is kept in a state of being in close contact with (biting into) the rubber plug 60. Thereby, high sealing performance is maintained.

<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態様も本発明の技術的範囲に含まれる。
(1)上記実施形態では、外周側仮想撓み部に対し内周側仮想撓み部の一部のみが対応するようにしたが、外周側仮想撓み部に対し内周側仮想撓み部の全領域が対応するようにしてもよい。
(2)上記実施形態では、1つの内周側仮想撓み部が2つの外周側仮想撓み部と対応するようにしたが、1つの内周側仮想撓み部が1つの外周側仮想撓み部のみと対応するようにしてもよい。
(3)上記実施形態では、1つの外周側仮想撓み部に対し2つの内周側仮想撓み部が対応するようにしたが、1つの外周側仮想撓み部と対応する内周側仮想撓み部の数は、3つ以上であってもよい。この場合、3つの内周側仮想撓み部、外周側仮想撓み部の前端部と後端部と中央部の3カ所で対応させることができる。
(4)上記実施形態では、複数の外周側仮想撓み部の全てに対して必ず内周側仮想撓み部が対応するようにしたが、内周側仮想撓みが対応しない外周側仮想撓み部が存在していてもよい。
(5)上記実施形態では、複数の内周側仮想撓み部の全てが必ず外周側仮想撓み部と対応するようにしたが、外周側仮想撓みと対応しない内周側仮想撓み部が存在していてもよい。
(6)上記実施形態では、補強部をゴム栓の内周に形成したが、補強部は、ゴム栓の外周に形成してもよい。
(7)上記実施形態では、内周側リップ部が補強部を兼ねたが、補強部は、内周側リップ部としての機能を持たない専用の補強部であってもよい。
(8)上記実施形態では、補強部として機能する内周側リップ部の内周側仮想撓み部が、軸線方向において圧着部の後端部と対応するようにしたが、この内周側仮想撓み部は、軸線方向において圧着部の後端部と対応しない形態であってもよい。
(9)上記実施形態では、補強部として機能する内周側リップ部の内周側仮想撓み部が、圧着部と外周側仮想撓み部の両方と対応するようにしたが、この内周側仮想撓み部は、圧着部とは対応するが、外周側仮想撓み部とは対応しない形態であってもよい。
(10)上記実施形態では、2つの外周側仮想撓み部の径方向の高さ寸法を互いに同じ寸法としたが、2つの外周側仮想撓み部の径方向の高さ寸法は互いに異なる寸法であってもよい。
(11)上記実施形態では、3つの内周側仮想撓み部の径方向の高さ寸法を互いに同じ寸法としたが、3つの内周側仮想撓み部の径方向の高さ寸法は互いに異なる寸法であってもよい。
<参考例>
(1)上記実施形態では、外周側仮想撓み部がその前端部と後端部との2カ所において内周側仮想撓み部と対応するようにしたが、2つの内周側仮想撓み部の対応位置は、外周側仮想撓み部の前端部と中央部の2カ所でもよく、後端部と中央部の2カ所であってもよい。
(2)上記実施形態では、1つの外周側仮想撓み部に対し2つの内周側仮想撓み部が対応するようにしたが、1つの外周側仮想撓み部と対応する内周側仮想撓み部の数は、1つだけであってもよい。1つの内周側仮想撓み部の対応位置としては、外周側仮想撓み部の前端部のみ、後端部のみ、中央部のみのいずれかとすることができる。
<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.
(1) In the above embodiment, only a part of the inner peripheral side virtual bending portion corresponds to the outer peripheral side virtual bending portion, but the entire region of the inner peripheral side virtual bending portion corresponds to the outer peripheral side virtual bending portion. You may make it respond | correspond.
(2) In the above embodiment, one inner circumferential virtual deflection portion corresponds to two outer circumferential virtual deflection portions. However, one inner circumferential virtual deflection portion is only one outer circumferential virtual deflection portion. You may make it respond | correspond.
(3) In the above embodiment, two inner peripheral side virtual flexures correspond to one outer peripheral side virtual flexure, but the inner perimeter side virtual flexures correspond to one outer perimeter side virtual flexure. The number may be three or more . In this case, three of the inner peripheral side virtual flexures can be made to correspond in three places of the front end portion of the outer peripheral side virtual bending portion and the rear end portion and the central portion.
(4) In the above-described embodiment, the inner peripheral side virtual bending portion always corresponds to all of the plurality of outer peripheral side virtual bending portions, but there is an outer peripheral side virtual bending portion that does not correspond to the inner peripheral side virtual bending portion. You may do it.
(5) In the above-described embodiment, all of the plurality of inner peripheral side virtual bending portions always correspond to the outer peripheral side virtual bending portion, but there are inner peripheral side virtual bending portions that do not correspond to the outer peripheral side virtual bending portion. May be.
(6) In the above embodiment, the reinforcing portion is formed on the inner periphery of the rubber plug. However, the reinforcing portion may be formed on the outer periphery of the rubber plug.
(7) In the above embodiment, the inner peripheral lip portion also serves as the reinforcing portion, but the reinforcing portion may be a dedicated reinforcing portion that does not have a function as the inner peripheral lip portion.
(8) In the above embodiment, the inner peripheral side virtual bending portion of the inner peripheral lip portion that functions as the reinforcing portion corresponds to the rear end portion of the crimping portion in the axial direction. The portion may be in a form that does not correspond to the rear end portion of the crimping portion in the axial direction.
(9) In the above-described embodiment, the inner peripheral side virtual bending part of the inner peripheral side lip part functioning as the reinforcing part corresponds to both the crimping part and the outer peripheral side virtual bending part. The bending portion may correspond to the crimping portion, but may not have the form corresponding to the outer peripheral side virtual bending portion.
(10) In the embodiment described above, the radial heights of the two outer peripheral side virtual flexures are the same as each other, but the radial heights of the two outer peripheral side virtual flexures are different from each other. May be.
(11) In the above-described embodiment, the radial height dimensions of the three inner peripheral side virtual flexures are the same as each other, but the radial height dimensions of the three inner peripheral side virtual flexures are different from each other. It may be.
<Reference example>
(1) In the above-described embodiment, the outer peripheral side virtual bending portion corresponds to the inner peripheral side virtual bending portion at two locations of the front end portion and the rear end portion. The positions may be two locations, the front end portion and the central portion of the outer peripheral side virtual bending portion, or may be two locations, the rear end portion and the central portion.
(2) In the above-described embodiment, two inner peripheral side virtual flexures correspond to one outer peripheral side virtual flexure, but the inner perimeter side virtual flexures correspond to one outer perimeter side virtual flexure. The number may be only one. As a corresponding position of one inner peripheral side virtual bending portion, only the front end portion, only the rear end portion, or only the center portion of the outer peripheral side virtual bending portion can be set.

1…コネクタ
10…コネクタハウジング
11…キャビティ
12L…キャビティの内周に相当する仮想線
20…端子金具
21…圧着部
30…電線
31L…電線の外周に相当する仮想線
40…ゴム栓
41…圧着用筒部
44A…第1外周側リップ部
44B…第2外周側リップ部
45A…第1外周側仮想撓み部
45B…第2外周側仮想撓み部
46A…第1内周側リップ部(補強部)
46B…第2内周側リップ部
46C…第3内周側リップ部
47A…第1内周側仮想撓み部
47B…第2内周側仮想撓み部
47C…第3内周側仮想撓み部
DESCRIPTION OF SYMBOLS 1 ... Connector 10 ... Connector housing 11 ... Cavity 12L ... Virtual wire equivalent to the inner periphery of a cavity 20 ... Terminal metal fitting 21 ... Crimp part 30 ... Electric wire 31L ... Virtual wire equivalent to the outer periphery of an electric wire 40 ... Rubber plug 41 ... For crimping Cylinder part 44A ... 1st outer periphery side lip part 44B ... 2nd outer periphery side lip part 45A ... 1st outer periphery side virtual bending part 45B ... 2nd outer periphery side virtual bending part 46A ... 1st inner periphery side lip part (reinforcement part)
46B ... 2nd inner circumference side lip part 46C ... 3rd inner circumference side lip part 47A ... 1st inner circumference side virtual bending part 47B ... 2nd inner circumference side virtual bending part 47C ... 3rd inner circumference side virtual bending part

Claims (7)

端子金具の後端部に接続した電線に外嵌され、前記端子金具と共にコネクタハウジングのキャビティ内に挿入されるようになっており、
外周には、前記キャビティの内周に対して弾性撓みした状態で密着する外周側リップ部が形成され、
内周には、前記電線の外周に対して弾性撓みした状態で密着する内周側リップ部が形成されているゴム栓であって、
前記ゴム栓及び前記キャビティの軸線を含む断面において、弾性撓みしていない状態の前記外周側リップ部のうち、前記キャビティの内周に相当する仮想線よりも外周側の領域が、外周側仮想撓み部と規定され、
前記ゴム栓及び前記電線の軸線を含む断面において、弾性撓みしていない状態の前記内周側リップ部のうち、変形していない状態の前記電線の外周に相当する仮想線よりも内周側の領域が、内周側仮想撓み部と規定され、
前記内周側仮想撓み部は、軸線方向に間隔を空けて複数配置され、
前記複数の内周側仮想撓み部の少なくとも一部が、軸線方向において1つの前記外周側仮想撓み部の前端部と後端部とに対応するように配置されていることを特徴とするゴム栓。
It is fitted on the wire connected to the rear end of the terminal fitting, and is inserted into the connector housing cavity together with the terminal fitting,
On the outer periphery, an outer peripheral lip portion is formed that is in close contact with the inner periphery of the cavity while being elastically bent,
The inner periphery is a rubber plug formed with an inner peripheral lip portion that is in close contact with the outer periphery of the electric wire in an elastically deformed state,
In the cross section including the axis of the rubber plug and the cavity, a region on the outer peripheral side with respect to an imaginary line corresponding to the inner periphery of the cavity in the outer peripheral lip portion that is not elastically bent is the outer peripheral virtual deflection. Part,
In the cross section including the axis line of the rubber plug and the electric wire, of the inner peripheral lip portion that is not elastically bent, the inner peripheral side of the imaginary line corresponding to the outer periphery of the electric wire that is not deformed. The region is defined as the inner circumference side virtual bending portion,
A plurality of the inner peripheral side virtual flexures are arranged at intervals in the axial direction,
The rubber plug is characterized in that at least a part of the plurality of inner peripheral virtual deflecting portions are arranged so as to correspond to the front end portion and the rear end portion of one outer peripheral virtual deflecting portion in the axial direction. .
前記外周側仮想撓み部が、軸線方向に間隔を空けて複数配置されており、
1つの前記内周側仮想撓み部の前端部と後端部が、軸線方向に隣り合う前後2つの前記外周側仮想撓み部と対応していることを特徴とする請求項1記載のゴム栓。
A plurality of the outer peripheral side virtual flexures are arranged at intervals in the axial direction,
2. The rubber plug according to claim 1, wherein a front end portion and a rear end portion of one inner peripheral virtual bending portion correspond to the two front and rear outer virtual bending portions adjacent in the axial direction.
前記外周側リップ部よりも前方には、前記端子金具の圧着部が外嵌される圧着用筒部が連なって設けられており、
前記圧着用筒部の後端部には、周面を局部的に突出させた形態の補強部が形成されていることを特徴とする請求項1又は請求項2記載のゴム栓。
In front of the outer peripheral side lip portion, a crimping cylinder portion to which the crimping portion of the terminal fitting is fitted is provided continuously,
The rubber plug according to claim 1 or 2, wherein a reinforcing portion having a shape in which a peripheral surface protrudes locally is formed at a rear end portion of the crimping cylinder portion .
前記内周側リップ部が、前記圧着用筒部の後端部内周から突出した形態とされることで前記補強部として機能するようになっていることを特徴とする請求項3記載のゴム栓。 4. The rubber plug according to claim 3, wherein the inner circumferential lip portion functions as the reinforcing portion by projecting from the inner periphery of the rear end portion of the crimping cylinder portion. . 前記補強部として機能する前記内周側リップ部の前記内周側仮想撓み部は、軸線方向において前記圧着部の後端部と対応していることを特徴とする請求項4記載のゴム栓。 The rubber plug according to claim 4 , wherein the inner peripheral side virtual bending portion of the inner peripheral lip portion functioning as the reinforcing portion corresponds to a rear end portion of the crimping portion in the axial direction . 前記内周側仮想撓み部の前端部が、軸線方向において前記圧着部の後端部と対応し、
前記内周側仮想撓み部の後端部が、軸線方向において前記外周側仮想撓み部の前端部と対応していることを特徴とする請求項5記載のゴム栓。
The front end portion of the inner peripheral side virtual bending portion corresponds to the rear end portion of the pressure-bonding portion in the axial direction,
The rubber plug according to claim 5 , wherein a rear end portion of the inner peripheral side virtual bending portion corresponds to a front end portion of the outer peripheral side virtual bending portion in the axial direction .
キャビティを有するコネクタハウジングと、
前記キャビティ内に挿入される端子金具と、
前記端子金具の後端部に接続された電線と、
前記電線に外嵌され、前記端子金具と共に前記キャビティ内に挿入されるゴム栓とを備え、
前記ゴム栓の外周には、前記キャビティの内周に対して弾性撓みした状態で密着する外周側リップ部が形成され、
前記ゴム栓の内周には、前記電線の外周に対して弾性撓みした状態で密着する内周側リップ部が形成されているコネクタであって、
前記ゴム栓及び前記キャビティの軸線を含む断面において、弾性撓みしていない状態の前記外周側リップ部のうち、前記キャビティの内周に相当する仮想線よりも外周側の領域が、外周側仮想撓み部と規定され、
前記ゴム栓及び前記電線の軸線を含む断面において、弾性撓みしていない状態の前記内周側リップ部のうち、変形していない状態の前記電線の外周に相当する仮想線よりも内周側の領域が、内周側仮想撓み部と規定され、
前記内周側仮想撓み部が、軸線方向に間隔を空けて複数配置され、
軸線方向において、前記複数の内周側仮想撓み部の少なくとも一部が、1つの前記外周側仮想撓み部の前端部と後端部とに対応するように配置されていることを特徴とするコネクタ
A connector housing having a cavity;
A terminal fitting inserted into the cavity;
An electric wire connected to the rear end of the terminal fitting;
A rubber plug that is externally fitted to the electric wire and inserted into the cavity together with the terminal fitting;
On the outer periphery of the rubber plug, an outer peripheral lip portion is formed which is in close contact with the inner periphery of the cavity while being elastically bent.
The inner periphery of the rubber plug is a connector formed with an inner peripheral lip portion that is in close contact with the outer periphery of the electric wire in an elastically deformed state,
In the cross section including the axis of the rubber plug and the cavity, a region on the outer peripheral side with respect to an imaginary line corresponding to the inner periphery of the cavity in the outer peripheral lip portion that is not elastically bent is the outer peripheral virtual deflection Part,
In the cross section including the axis line of the rubber plug and the electric wire, of the inner peripheral lip portion that is not elastically bent, the inner peripheral side of the imaginary line corresponding to the outer periphery of the electric wire that is not deformed. The region is defined as the inner circumference side virtual bending portion,
A plurality of the inner peripheral side virtual flexures are arranged at intervals in the axial direction,
In the axial direction, at least a portion of said plurality of inner circumferential side virtual bending section, you characterized in that it is arranged so as to correspond to the front and rear ends of one of the outer peripheral-side virtual flexures Connector .
JP2009090909A 2009-04-03 2009-04-03 Rubber stopper and connector Active JP5278121B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2009090909A JP5278121B2 (en) 2009-04-03 2009-04-03 Rubber stopper and connector
EP20100002515 EP2254203B1 (en) 2009-04-03 2010-03-10 Resilient plug, fluid proof construction and connector
CN2010101509063A CN101859960B (en) 2009-04-03 2010-03-26 Resilient plug, fluid proof construction and connector
US12/752,360 US7997916B2 (en) 2009-04-03 2010-04-01 Resilient plug, fluid proof construction and connector

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