JP5527009B2 - Grommet - Google Patents

Description

本発明はグロメットに関し、詳しくは、ハーネスの端末に接続されるコネクタに被せて保護するカバー部を有するグロメットであって、コネクタを相手方部材と結合する時および結合検査時等にカバー部をめくる一方、捲った後にカバー部を元に戻してコネクタに被せるものである。   The present invention relates to a grommet, and more particularly, to a grommet having a cover portion that covers and protects a connector connected to a terminal of a harness, and turns the cover portion when the connector is coupled to a counterpart member and during a coupling inspection. After covering, the cover part is returned to its original position and put on the connector.

ハーネスの端末に接続するコネクタを保護する目的で、コネクタに被せるカバー部を設けたグロメットがハーネス端末に取り付けられている場合がある。
この種の汎用されているグロメットは、図６（Ａ）に示すように、電線群を通す小径筒部１０１の一端に中径筒部１０２を連続させ、該中径筒部１０２の先端を外径方向に突出する段部１０３を介して大径筒部からなるカバー部１０４に連続させ、該カバー部１０４の先端は開口１０４ａとしている。前記グロメットのカバー部１０４でハーネス１１０の端末に接続したコネクタ１１２をカバーしている。 For the purpose of protecting the connector connected to the terminal of the harness, a grommet provided with a cover portion covering the connector may be attached to the harness terminal.
As shown in FIG. 6 (A), this type of commonly used grommet has a medium-diameter cylindrical portion 102 connected to one end of a small-diameter cylindrical portion 101 through which a group of wires are passed, and the tip of the medium-diameter cylindrical portion 102 is externally attached. The cover portion 104 is formed of a large-diameter cylindrical portion through a step portion 103 projecting in the radial direction, and the end of the cover portion 104 has an opening 104a. The connector 112 connected to the terminal of the harness 110 is covered with the cover part 104 of the grommet.

前記コネクタ１１２を相手方コネクタまたは相手方部材のコネクタ嵌合部に結合する際、カバー部１０４は結合作業時に邪魔になるため、図６（Ｂ）に示すように、カバー部１０４を中径筒部１０２側に捲ってコネクタ１１２を露出させている。結合作業後にはカバー部１０４を元に戻してコネクタ１１２に被せ、また、コネクタの結合検査時にはカバー部１０４を捲り、検査終了後にはカバー部を元に戻している。   When the connector 112 is coupled to the mating connector or the connector fitting portion of the mating member, the cover portion 104 becomes an obstacle during the coupling operation. Therefore, as shown in FIG. The connector 112 is exposed over the side. After the coupling work, the cover part 104 is returned to the original position and is put on the connector 112. Further, the cover part 104 is turned over at the time of connector connection inspection, and the cover part is returned to the original state after the inspection.

前記グロメットは、カバー部１０４を捲る作業および元に戻す作業が容易にできるように、カバー部１０４の肉厚１０４ｔを薄肉にすると共に、中径筒部１０２の肉厚１０２ｔは比較的厚くし、カバー部１０４が中径筒部１０２の外周に捲られるようにしている。
しかしながら、カバー部１０４をめくる作業は片手作業で簡単には行えない。よって、例えば、両手でカバー部の対向部を広げるように把持しながら、カバー部１０４の周壁の対向位置を内方へ押し込むようにして、少なくとも２カ所を同時に捲らないと全体が捲れない。また、カバー部１０４を捲りやすいように、カバー部１０４を前記にように薄肉としている。よって、鋭利な突端を有する外部干渉材に対する保護機能が十分でない問題もある。 The grommet has a thin wall thickness 104t of the cover portion 104 and a relatively thick wall thickness 102t of the medium diameter cylindrical portion 102 so that the work of turning the cover portion 104 and the operation of returning the cover portion 104 can be easily performed. The cover portion 104 is wound around the outer periphery of the medium diameter cylindrical portion 102.
However, the operation of turning the cover portion 104 cannot be easily performed with one hand. Therefore, for example, the entire portion cannot be rolled unless the opposite positions of the peripheral wall of the cover portion 104 are pushed inward while holding the opposite portions of the cover portion with both hands so that at least two locations are not simultaneously rolled. In addition, the cover 104 is thin as described above so that the cover 104 can be easily rolled. Therefore, there is also a problem that the protection function for the external interference material having a sharp tip is not sufficient.

なお、従来、グロメットの先端に捲り部ではないが、出没部分を設けたものとして、特開平１１−２５７８６号公報で、図７（Ａ）（Ｂ）に示すグロメットが提案されている。該グロメット１２０は電線挿通筒部１２１を拡径筒部１２２に連続させ、該拡径筒部１２２の先端にパネル固定部１２３を設け、該パネル固定部１２３の先端から薄肉とした第２筒部１２４を出没自在に突設している。
該グロメット１２０にはハーネス１３０が挿通され、該ハーネス１３０に第２筒部１２４の先端がテープ１２５で巻きつけられ、該第２筒部１２４を拡径筒部１２２の内部に押し込むように没することで、防塵、防音機能を高めている。 Conventionally, a grommet shown in FIGS. 7 (A) and 7 (B) is proposed in Japanese Patent Application Laid-Open No. 11-25786 as a grommet that is not provided with a grooving portion but is provided with a protruding portion. The grommet 120 has a wire insertion tube portion 121 connected to the enlarged diameter cylindrical portion 122, a panel fixing portion 123 is provided at the distal end of the expanded diameter cylindrical portion 122, and a second cylindrical portion that is thin from the distal end of the panel fixing portion 123. 124 protrudes freely.
A harness 130 is inserted into the grommet 120, and the tip of the second cylindrical portion 124 is wound around the harness 130 with a tape 125, and the second cylindrical portion 124 is pushed down into the enlarged diameter cylindrical portion 122. In this way, the dustproof and soundproofing functions are enhanced.

前記グロメットは薄肉とした第２筒部１２４を拡径筒部１２２に対して出没自在としているが、一旦、拡径筒部１２２内に第２筒部１２４を没して収容した状態とすると、該状態で使用されるものであり、前記コネクタに被せるカバー部のように捲った後に元に戻されるものではなく、かつ、第２筒部１２４を拡径筒部１２２内に押し込む作業は容易でないと認められる。   The grommet has a thin second cylindrical portion 124 that can be projected and retracted with respect to the enlarged diameter cylindrical portion 122, but once the second cylindrical portion 124 is immersed and accommodated in the enlarged diameter cylindrical portion 122, It is used in this state, and is not returned after being rolled like a cover portion covering the connector, and the operation of pushing the second cylindrical portion 124 into the enlarged diameter cylindrical portion 122 is not easy. It is recognized.

特開平１１−２５７８６号公報Japanese Patent Laid-Open No. 11-25786

本発明は前記問題に鑑みなされたもので、電線挿通筒部の先端にコネクタのカバー部を設けたグロメットにおいて、カバー部を片手作業でワンタッチで捲れると共に捲れた状態から元に戻せるようにすると共に、カバー部を比較的厚肉としてコネクタの保護機能を高めることを課題としている。   The present invention has been made in view of the above problem, and in a grommet in which a cover portion of a connector is provided at the tip of an electric wire insertion tube portion, the cover portion can be swung with one touch and can be returned from a drowned state. At the same time, it is an object to increase the protective function of the connector by making the cover portion relatively thick.

前記課題を解決するため、本発明は、自動車に配索されるワイヤハーネスの端末に接続したコネクタを覆うと共に露出をワンタッチ作業で行えるグロメットであって、
ゴムまたはエラストマーからなる弾性体で成形され、半円環状としたテープ巻き部の先端に蛇腹筒部を連続させた電線挿通筒部と、前記蛇腹筒部の先端から拡径方向に突出する第一薄肉ヒンジ部と、該第一薄肉ヒンジ部を介して連続する中径筒部と、該中径筒部の先端から拡径方向に突出する第二薄肉ヒンジ部と、該第二薄肉ヒンジ部を介して連続する厚肉な大径筒状のカバー部を備え、該カバー部の外周面には後退操作および前進操作用の摘まみ片を長さ方向に延在させて突設しており、
前記電線挿通筒部の肉厚ｔ５、第一薄肉ヒンジ部の肉厚をｔ１、第二薄肉ヒンジ部の肉厚をｔ２、中径筒部の肉厚をｔ３、カバー部の肉厚をｔ４とすると、ｔ１≦ｔ２＜ｔ５＜ｔ３＜ｔ４に設定しており、
前記電線挿通筒部に電線群を挿通し、該電線群を前記テープ巻き部に粘着テープを巻きつけて固定し、該電線群の端末に接続したコネクタを前記カバー部で覆っており、
前記コネクタを前記カバー部より外部に突出させるために、前記摘まみ片を持って前記カバー部を後退させると、前記電線群に固定されている前記テープ巻き部に連続する前記蛇腹筒部が縮むと共に、該蛇腹筒部に連続する前記第一薄肉ヒンジ部が支点となって前記中径筒部を反転させ、該反転させた中径筒部内に前記蛇腹筒部とテープ巻き部が押し込まれると共に、該中径筒部の先端と前記カバー部との間の前記第二薄肉ヒンジ部が支点となって該中径筒部が前記カバー部内に反転して押し込まれることを特徴とするグロメットを提供している。 In order to solve the above problems, the present invention is a grommet that covers a connector connected to a terminal of a wire harness that is routed in an automobile and that can be exposed by a one-touch operation.
Is molded of an elastic body made of rubber or elastomer, and a semicircular annular and the tape winding portion of the allowed electrodeposition wire inserting cylinder portion continuously bellows tube portion to the tip, the protruding diameter direction from the tip of the bellows tube portion One thin-walled hinge part, a medium-diameter cylinder part continuous through the first thin-walled hinge part, a second thin-walled hinge part projecting in the diameter-expanding direction from the tip of the medium-diameter cylinder part, and the second thin-walled hinge part The cover has a thick, large-diameter cylindrical cover that is continuous through the handle, and a knob for backward operation and forward operation extends in the length direction on the outer peripheral surface of the cover. ,
The thickness t5 of the wire insertion tube portion, the thickness of the first thin hinge portion t1, the wall thickness of the second thin hinge portion t2, the wall thickness of the medium diameter tube portion t3, and the wall thickness of the cover portion t4 Then, t1 ≦ t2 <t5 <t3 <t4 is set,
The electric wire insertion tube portion inserted through the wire group to the electric line group is fixed by winding an adhesive tape to the tape winding portion, and a connector connected to the power line group of the terminal Tsu covered by the cover portion,
To project the previous SL connector to the outside from the cover part, retracting the cover portion with the knob piece, the bellows-like cylindrical portion continuous in the tape winding portion which is fixed to the wire group is The first bellows hinge portion that continues to the bellows tube portion is used as a fulcrum to reverse the medium diameter tube portion, and the bellows tube portion and the tape winding portion are pushed into the inverted medium diameter tube portion. And a grommet in which the second thin-walled hinge portion between the tip of the middle-diameter cylindrical portion and the cover portion serves as a fulcrum and the middle-diameter cylindrical portion is inverted and pushed into the cover portion. providing.

前記グロメットでは、カバー部からコネクタを露出する必要がある時、カバー部を後退させる。該カバー部は、その肉厚ｔ４を最大肉厚として剛性を持たせているため、カバー部は腰折れすることなく直進状態で後退する。このカバー部の後退で電線挿通筒部は電線群に粘着テープ等で固着しているため後退できず、最小肉厚ｔ１の第一薄肉ヒンジ部が支点となって電線挿通筒部を中径筒部内に押し込む。ついで、第二薄肉ヒンジ部が支点となって中径筒部を捲るように反転させカバー部内に収容する。このように、後退させたカバー部内で中径筒部は両端の第一、第二薄肉ヒンジ部を支点として捲れた状態（即ち、内外面が反転した状態）で保持され、よって、カバー部はコネクタを露出させた位置で保持される。
コネクタをカバー部で覆う時はカバー部をコネクタ側の前方へ引っ張るだけで、前記と逆作用でカバー部から中径筒部が引き出されるようにカバー部を前進させて元に戻すことができる。 In the grommet, when it is necessary to expose the connector from the cover part, the cover part is retracted. Since the cover portion has rigidity with the thickness t4 as the maximum thickness, the cover portion moves backward without being folded back. As the cover part is retracted, the wire insertion tube part cannot be retracted because it is fixed to the wire group with an adhesive tape or the like, and the first thin hinge part with the minimum wall thickness t1 serves as a fulcrum to turn the wire insertion tube part into a medium diameter tube. Push it into the club. Next, the second thin-walled hinge portion is turned as a fulcrum so as to turn over the medium-diameter cylindrical portion and accommodated in the cover portion. In this way, the middle-diameter cylindrical portion is held in the retracted cover portion with the first and second thin hinge portions at both ends as fulcrums (that is, the inner and outer surfaces are inverted), and thus the cover portion is The connector is held in an exposed position.
When the connector is covered with the cover portion, the cover portion can be moved forward and returned to the original position by pulling the cover portion forward on the connector side so that the medium-diameter cylindrical portion is pulled out of the cover portion by the reverse action.

前記カバー部の肉厚ｔ４は第一、第二薄肉ヒンジ部の肉厚ｔ１、ｔ２の３倍〜５倍とすると共に中径筒部の肉厚ｔ３の２〜３倍未満としていることが好ましい。   It is preferable that the thickness t4 of the cover portion is 3 to 5 times the thickness t1 and t2 of the first and second thin hinge portions and less than 2 to 3 times the thickness t3 of the medium-diameter cylindrical portion. .

前記第一薄肉ヒンジ部と連続する前記電線挿通筒部の先端側は２山程度の蛇腹筒部としている。蛇腹筒部とすると、カバー部の後退時に、まず、蛇腹筒部が縮んで第一薄肉ヒンジ部に負荷をかけることで、該第一薄肉ヒンジ部を支点として中径筒部を捲っていくことができる。
前記のように、蛇腹筒部および電線挿通筒部の肉厚ｔ５は、肉厚ｔ２＜ｔ５≦ｔ３の範囲としている。 The leading end side of the wire insertion tube portion that is continuous with the first thin-walled hinge portion is a bellows tube portion of about two ridges . When the bellows tube portion is retracted, when the cover portion is retracted, the bellows tube portion is first contracted and a load is applied to the first thin-walled hinge portion, so that the medium-diameter tube portion is wound around the first thin-walled hinge portion as a fulcrum. Can do.
As described above , the wall thickness t5 of the bellows tube portion and the wire insertion tube portion is in the range of wall thickness t2 <t5 ≦ t3 .

グロメットの各部の前記肉厚は、第一、第二薄肉ヒンジ部を支点として中径筒部が反転して捲れてカバー部内に収容できるものであればよい。
前記カバー部は、全体を肉厚ｔ４とする必要はなく、少なくとも前記第二薄肉ヒンジ部に連続する部分に肉厚ｔ４の全周方向の厚肉部を設ければよい。 The said thickness of each part of a grommet should just be what can be accommodated in a cover part by turning an inside diameter cylinder part inversion with the 1st and 2nd thin hinge part as a fulcrum.
The cover portion does not need to have the entire thickness t4, and it is sufficient to provide a thick portion in the circumferential direction of the thickness t4 at least in a portion continuous with the second thin hinge portion.

また、該カバー部の周方向の一部外面にカバー部の後退操作および前進操作用の摘まみ片を突設している。このように、カバー部に摘まみ片を突設しておくと、作業員は摘まみをもって引っ張るだけで、カバー部を後退させてコネクタを露出させることができ、カバー部を前進させて元に戻してコネクタをカバー部で覆うことができ、ワンタッチ作業となるため、作業時間を従来に比して大幅に短縮できる。
上記摘まみ片はコネクタの結合作業で邪魔にならない位置に設けている。 Also projecting a knob piece of the backward operation and forward operation of the cover portion in the circumferential direction of the portion the outer surface of the cover portion. In this way, if the knob is protruded from the cover part, the worker can pull back the cover part to expose the connector by simply pulling with the knob. Since the connector can be returned and covered with the cover portion, the work time can be greatly reduced as compared with the conventional case.
The knob is provided at a position where it does not get in the way of connector connection.

前記カバー部の長さは中径筒部の約２倍程度の長さとすることが好ましい。また、該カバー部の長さはコネクタを相手方コネクタと嵌合する場合には、相手方コネクタも覆う長さとし、相手方部材のコネクタ収容部に取り付ける場合には、該コネクタ収容部の開口を覆うようにすることが好ましい。さらに、カバー部の内径は中径筒部の外径の１．２倍〜２倍程度とすることが好ましい。   The length of the cover part is preferably about twice as long as the medium diameter cylinder part. The length of the cover is such that when the connector is mated with the mating connector, the length of the cover is also covered. When the cover is attached to the connector housing of the mating member, the opening of the connector housing is covered. It is preferable to do. Furthermore, the inner diameter of the cover part is preferably about 1.2 to 2 times the outer diameter of the medium diameter cylinder part.

本発明のグロメットは、電線挿通筒部を延在させ、該延在部分を蛇腹筒部とし、かつ、該電線挿通筒部の他端にも同様な中径筒部およびカバー部を設け、グロメットを通す電線群の両端のコネクタを前記カバー部で保護する構成としてもよい。   The grommet of the present invention extends the wire insertion tube portion, the extended portion is a bellows tube portion, and the other end of the wire insertion tube portion is provided with a similar medium diameter tube portion and a cover portion. It is good also as a structure which protects the connector of the both ends of the electric wire group which lets it pass by the said cover part.

前述したように、本発明では、コネクタを覆うカバー部に第二薄肉ヒンジ部を介して中径筒部に連続させ、さらに、該中径筒部を第一薄肉ヒンジ部を介して蛇腹筒部に連続させている。
該形状としていることで、コネクタを露出させるために、カバー部を後退させると、前記２カ所の第一、第二薄肉ヒンジ部を支点として中径筒部を反転して捲った状態としてカバー部内に収容して、カバー部を後退させる。このように、カバー部を後退させる方向に引っ張るだけでコネクタを露出でき、元に戻す場合には逆方向に引っ張って前進させるだけでよい。よって、カバー部を捲る作業および戻す作業をワンタッチで簡単にできるため、作業時間を大幅に短縮することができる。 As described above, in the present invention, the cover portion that covers the connector is connected to the intermediate diameter cylindrical portion via the second thin hinge portion, and the intermediate diameter cylindrical portion is further connected to the bellows cylindrical portion via the first thin thickness hinge portion. It is made to continue.
With this shape, when the cover part is retracted in order to expose the connector, the inside diameter cylinder part is turned over with the first and second thin hinge parts at the two locations as fulcrums. And retract the cover part. In this way, the connector can be exposed only by pulling in the direction in which the cover part is retracted, and when returning to the original state, it is only necessary to pull it in the reverse direction and advance. Therefore, the operation of turning the cover portion and the operation of returning the cover portion can be easily performed with one touch, so that the operation time can be greatly reduced.

本発明の実施形態のグロメットの斜視図である。It is a perspective view of the grommet of an embodiment of the present invention. 前記グロメットの断面図である。It is sectional drawing of the said grommet. 前記グロメットにコネクタ付きハーネスを通した状態を示し、（Ａ）は断面図、（Ｂ）は斜視図である。The state which passed the harness with a connector through the said grommet is shown, (A) is sectional drawing, (B) is a perspective view. 前記グロメットを後退させてコネクタを露出させた状態を示し、（Ａ）は斜視図、（Ｂ）は断面図である。The state which retracted the said grommet and exposed the connector is shown, (A) is a perspective view, (B) is sectional drawing. 前記コネクタを相手方部材と接続している状態を示す斜視図である。It is a perspective view which shows the state which has connected the said connector with the other party member. （Ａ）（Ｂ）は従来例を示す図面である。(A) (B) is drawing which shows a prior art example. （Ａ）（Ｂ）は他の従来例を示す図面である。(A) and (B) are drawings showing other conventional examples.

以下、本発明の実施形態を図面を参照して説明する。
本発明のグロメットは自動車に配索されるハーネスの端末側に外装し、該ハーネス端末に接続したコネクタに覆うカバー部を設けたものである。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The grommet of the present invention is provided with a cover portion covering the connector connected to the harness terminal, which is provided on the terminal side of the harness routed in the automobile.

図１に示すように、グロメット１はゴムまたはエラストマーからなる弾性体の成形品であり、本実施形態のグロメット１はＥＰＤＭで成形している。
グロメット１は、電線挿通筒部２と、該電線挿通筒部２の先端に設けた蛇腹筒部３と、該蛇腹筒部３の先端に連続する拡径方向に突出する第一薄肉ヒンジ部４と、該第一薄肉ヒンジ部４と連続する中径筒部５と、該中径筒部５の先端から拡径方向に突出する第二薄肉ヒンジ部６と、該第二薄肉ヒンジ部６に連続する厚肉な大径筒状のカバー部７とからなる。また、カバー部７の外面に軸線方向に突設した摘まみ片８を突設している。 As shown in FIG. 1, the grommet 1 is a molded product of an elastic body made of rubber or elastomer, and the grommet 1 of this embodiment is molded by EPDM.
The grommet 1 includes an electric wire insertion tube portion 2, a bellows tube portion 3 provided at the tip of the wire insertion tube portion 2, and a first thin-walled hinge portion 4 that protrudes in the diameter increasing direction continuous to the tip of the bellows tube portion 3. An intermediate diameter cylindrical portion 5 that is continuous with the first thin thickness hinge portion 4, a second thin thickness hinge portion 6 that projects from the tip of the intermediate diameter cylindrical portion 5 in the diameter increasing direction, and the second thin thickness hinge portion 6. It consists of a continuous thick, large-diameter cylindrical cover portion 7. Further, a knob piece 8 protruding in the axial direction is provided on the outer surface of the cover portion 7.

前記グロメット１の各部の肉厚は、第一薄肉ヒンジ部４の肉厚をｔ１、第二薄肉ヒンジ部６の肉厚をｔ２、中径筒部５の肉厚をｔ３、カバー部７の肉厚をｔ４とすると、ｔ１≦ｔ２＜ｔ３＜ｔ４に設定している。また 電線挿通筒部２および蛇腹筒部３の肉厚ｔ５は同等とし、肉厚ｔ５はｔ２＜ｔ５＜ｔ３としている。
前記カバー部７の肉厚ｔ４は第一、第二薄肉ヒンジ部４、６の肉厚ｔ１、ｔ２の３倍〜５倍とすると共に中径筒部５の肉厚ｔ３の２〜３倍未満としている。 The thickness of each part of the grommet 1 is that the thickness of the first thin-walled hinge portion 4 is t1, the thickness of the second thin-walled hinge portion 6 is t2, the thickness of the medium-diameter cylindrical portion 5 is t3, and the thickness of the cover portion 7 When the thickness is t4, t1 ≦ t2 <t3 <t4 is set. Moreover, the thickness t5 of the electric wire insertion cylinder part 2 and the bellows cylinder part 3 is made equal, and the thickness t5 is t2 <t5 <t3.
The wall thickness t4 of the cover portion 7 is 3 to 5 times the wall thickness t1 and t2 of the first and second thin-walled hinge portions 4 and 6, and less than 2 to 3 times the wall thickness t3 of the medium-diameter cylindrical portion 5. It is said.

前記のように肉厚を設定し、カバー部７の肉厚ｔ４を最大として剛性を持たせ、後退および前進方向の引っ張り力を負荷しても腰折れが発生せずに直進するものとしている。 カバー部７は全体をすべて肉厚ｔ４にする必要ななく、少なくとも第二薄肉ヒンジ部６と連続する部分の周壁７ａの全周を厚肉にすれば良い。
また、カバー部７の内径ｒ１は中径筒部５の外径ｒ２の１．２〜２倍程度とし、カバー部７の長さは中径筒部の長さの約２倍としている。 As described above, the wall thickness is set, the wall thickness t4 of the cover portion 7 is maximized to give rigidity, and even if a pulling force in the backward and forward directions is applied, it does not cause a hip break and goes straight. It is not necessary for the entire cover portion 7 to have the thickness t4, and at least the entire circumference of the peripheral wall 7a that is continuous with the second thin-walled hinge portion 6 may be thickened.
Further, the inner diameter r1 of the cover portion 7 is about 1.2 to 2 times the outer diameter r2 of the medium diameter cylindrical portion 5, and the length of the cover portion 7 is about twice the length of the medium diameter cylindrical portion.

また、カバー部７の第二薄肉ヒンジ部６側の周壁７ａは、先端側に向けて少し拡径し、かつ、先端側の周壁７ｂは拡径せずに直管状としている。前記拡径状とした周壁７ａの根元部分には取付時に下面側となる位置に水抜き穴７ｃを設けている。   Further, the peripheral wall 7a on the second thin hinge portion 6 side of the cover portion 7 is slightly enlarged in diameter toward the distal end side, and the peripheral wall 7b on the distal end side is formed in a straight tube shape without being expanded. A drain hole 7c is provided in the base portion of the peripheral wall 7a having an enlarged diameter at a position on the lower surface side when attached.

本実施形態のグロメット１では電線挿通筒部２は非常に短く、蛇腹筒部３に連続して半円環状としたテープ巻き部９を設けている。
なお、蛇腹筒部３に連続して小径円筒状の直線状または屈曲した電線挿通筒部を設け、その先端にテープ巻き部を設けてもよく、ハーネスの配索条件によって電線挿通筒部２の形状は適宜に変更できる。 In the grommet 1 of this embodiment, the wire insertion tube portion 2 is very short, and is provided with a tape winding portion 9 that is continuous with the bellows tube portion 3 and has a semicircular shape.
It is to be noted that a small diameter cylindrical linear or bent wire insertion tube portion may be provided continuously to the bellows tube portion 3, and a tape winding portion may be provided at the tip thereof. Depending on the wiring condition of the harness, the wire insertion tube portion 2 The shape can be changed as appropriate.

前記形状からなるグロメット１は、図３に示すように、コネクタ３０を先端に接続したハーネス３１の先端側に取り付けている。すなわち、電線挿通筒部２をハーネス３１に外装し、そのテープ巻き部９に粘着テープＴを巻き付けて固着している。このハーネス３１へのグロメット１の取付位置は、カバー部７でコネクタ３０が覆われて保護される位置としている。   As shown in FIG. 3, the grommet 1 having the shape is attached to the distal end side of a harness 31 in which a connector 30 is connected to the distal end. That is, the wire insertion tube portion 2 is externally mounted on the harness 31, and the adhesive tape T is wound around the tape winding portion 9 and fixed thereto. The attachment position of the grommet 1 to the harness 31 is a position where the connector 30 is covered and protected by the cover portion 7.

前記図３に示すように、ハーネス３１に取り付けたグロメット１のカバー部７でコネクタ３０を囲んで保護した状態でハーネス３１を自動車に配索しても良いし、図４に示すように、カバー部７よりコネクタ３０を外部に露出させた状態でハーネス３１を自動車に配索してもよい。   As shown in FIG. 3, the harness 31 may be routed in the automobile in a state where the connector 30 is surrounded and protected by the cover portion 7 of the grommet 1 attached to the harness 31. The harness 31 may be routed in the automobile with the connector 30 exposed from the portion 7 to the outside.

前記図３に示すグロメット１のカバー部７でコネクタ３０を覆った状態から、図４に示すコネクタ３０を露出させた状態とする作業について説明する。
カバー部７の外面から突設している摘まみ片８を持って後退方向Ｙ１へと引っ張ってカバー部７を中径筒部５側へと後退させる。カバー部７は肉厚ｔ４を最大肉厚として剛性を持たせているため腰折れすることなく直進状態で後退する。このようにカバー部７を後退させても、グロメット１の後端の電線挿通筒部２は電線群に粘着テープＴで固着しているため後退できず、蛇腹筒部３が縮むと共に蛇腹筒部３に連続する最小肉厚ｔ１の第一薄肉ヒンジ部４が撓み、蛇腹筒部３および電線挿通筒部２を反転して中径筒部５内に押し込むように第一薄肉ヒンジ部４が変形していく。
ついで、肉厚ｔ２とした第二薄肉ヒンジ部６が支点となり、中径筒部５が後退してくるカバー部７内に収容されるように捲れる。 The operation of changing the connector 30 shown in FIG. 4 from the state where the connector 30 is covered with the cover portion 7 of the grommet 1 shown in FIG. 3 will be described.
Holding the knob 8 protruding from the outer surface of the cover part 7 and pulling it in the retreating direction Y1, the cover part 7 is retreated toward the medium diameter cylinder part 5 side. Since the cover portion 7 has rigidity with the wall thickness t4 as the maximum wall thickness, the cover portion 7 moves backward without being folded back. Even if the cover portion 7 is retracted in this way, the wire insertion tube portion 2 at the rear end of the grommet 1 cannot be retracted because it is fixed to the wire group with the adhesive tape T, and the bellows tube portion 3 contracts and the bellows tube portion. 3 and the first thin-walled hinge part 4 having the minimum thickness t1 is bent, and the first thin-walled hinge part 4 is deformed so that the bellows tube part 3 and the wire insertion tube part 2 are inverted and pushed into the medium-diameter tube part 5. I will do it.
Then, the second thin-walled hinge portion 6 having a thickness t2 serves as a fulcrum, and the medium-diameter cylindrical portion 5 is rolled so as to be accommodated in the retracting cover portion 7.

このように、摘まみ片８を持ってカバー部７を後退させるだけのワンタッチ作業で、カバー部７内に中径筒部５は両端の第一、第二薄肉ヒンジ部４、６を支点として折り返された状態（即ち、捲れた状態）で保持され、カバー部７はコネクタ３０を露出させた位置で保持される。
一方、コネクタ３０を露出させた状態からカバー部７で覆う状態に戻す作業は、摘まみ片８を反対方向の前進方向Ｙ２に前進させると、第一、第二薄肉ヒンジ部４、６を支点として中径筒部５は元に戻るように反転し、グロメット１が伸びることになる。 In this way, the one-touch operation of holding the knob piece 8 and retreating the cover portion 7 allows the medium-diameter cylindrical portion 5 to be located in the cover portion 7 with the first and second thin hinge portions 4 and 6 at both ends as fulcrums. The cover 7 is held in a folded state (that is, in a bent state), and is held at a position where the connector 30 is exposed.
On the other hand, in the operation of returning the connector 30 from the exposed state to the state covered with the cover part 7, when the knob 8 is advanced in the forward direction Y2 in the opposite direction, the first and second thin hinge parts 4 and 6 are supported. As a result, the medium-diameter cylindrical portion 5 is reversed so as to return to the original state, and the grommet 1 is extended.

図５に示すように、カバー部７からコネクタ３０を露出させた状態で、相手方部材４０のコネクタ結合部４１にコネクタ３０を結合する。かつ、コネクタ３０と相手方部材４０との結合チェック後に、グロメット１を摘まみ片８を持ってカバー部７を前進させる方向に引っ張り、図３に示すように、カバー部７でコネクタ３０を覆う。   As shown in FIG. 5, the connector 30 is coupled to the connector coupling portion 41 of the counterpart member 40 with the connector 30 exposed from the cover portion 7. In addition, after checking the connection between the connector 30 and the counterpart member 40, the grommet 1 is gripped and pulled in the direction in which the cover portion 7 is advanced by holding the piece 8, and the connector 30 is covered with the cover portion 7 as shown in FIG.

このように、前記グロメット１では摘まみ片８を持って後退方向と前進方向に引っ張るだけの片手でのワンタッチ作業でカバー部を後退させてコネクタを露出でき、また、カバー部を前進させてコネクタを覆うことができる。よって、今まで比較的難作業であったカバー部の捲り作業を簡単に行うことができ、作業時間を短縮することができる。また、カバー部の肉厚を大としているため、コネクタの保護機能を高めることができる。   Thus, in the grommet 1, the connector can be exposed by retreating the cover part by one-touch operation with only one hand holding the knob piece 8 and pulling in the retreating direction and the advancing direction. Can be covered. Therefore, it is possible to easily perform the turning operation of the cover part, which has been a comparatively difficult work until now, and to reduce the work time. Moreover, since the thickness of the cover part is increased, the protection function of the connector can be enhanced.

なお、本発明は前記実施形態に限定されず、電線挿通筒部を長く延在させ他端にも第一薄肉ヒンジ部、中径筒部、第二薄肉ヒンジ部、カバー部を設け、ハーネスの両端に接続したコネクタにカバー部を被せてもよい。
また、カバー部の外面に設ける摘まみ片は作業スペースに応じて突設位置を変えている。かつ、摘まみ片を設けるスペースがない場合には、摘まみ片を無くしてカバー部を掴んで、直接に後退させたり前進させてもよい。 In addition, this invention is not limited to the said embodiment, The electric wire penetration cylinder part is extended long, the 1st thin hinge part, the medium diameter cylinder part, the 2nd thin hinge part, and the cover part are provided in the other end, You may put a cover part on the connector connected to both ends.
Further, the knob piece provided on the outer surface of the cover portion changes the protruding position according to the work space. In addition, when there is no space for providing the knob, the knob may be removed and the cover portion may be gripped to be moved backward or forward.

１ グロメット
２ 電線挿通筒部
３ 蛇腹筒部
４ 第一薄肉ヒンジ部
５ 中径筒部
６ 第二薄肉ヒンジ部
７ カバー部
８ 摘まみ片
３０ コネクタ
３１ ハーネス DESCRIPTION OF SYMBOLS 1 Grommet 2 Electric wire insertion cylinder part 3 Bellows cylinder part 4 1st thin-walled hinge part 5 Medium diameter cylinder part 6 2nd thin-walled hinge part 7 Cover part 8 Knob piece 30 Connector 31 Harness

Claims (2)

自動車に配索されるワイヤハーネスの端末に接続したコネクタを覆うと共に露出をワンタッチ作業で行えるグロメットであって、
ゴムまたはエラストマーからなる弾性体で成形され、半円環状としたテープ巻き部の先端に蛇腹筒部を連続させた電線挿通筒部と、前記蛇腹筒部の先端から拡径方向に突出する第一薄肉ヒンジ部と、該第一薄肉ヒンジ部を介して連続する中径筒部と、該中径筒部の先端から拡径方向に突出する第二薄肉ヒンジ部と、該第二薄肉ヒンジ部を介して連続する厚肉な大径筒状のカバー部を備え、該カバー部の外周面には後退操作および前進操作用の摘まみ片を長さ方向に延在させて突設しており、
前記電線挿通筒部の肉厚ｔ５、第一薄肉ヒンジ部の肉厚をｔ１、第二薄肉ヒンジ部の肉厚をｔ２、中径筒部の肉厚をｔ３、カバー部の肉厚をｔ４とすると、ｔ１≦ｔ２＜ｔ５＜ｔ３＜ｔ４に設定しており、
前記電線挿通筒部に電線群を挿通し、該電線群を前記テープ巻き部に粘着テープを巻きつけて固定し、該電線群の端末に接続したコネクタを前記カバー部で覆っており、
前記コネクタを前記カバー部より外部に突出させるために、前記摘まみ片を持って前記カバー部を後退させると、前記電線群に固定されている前記テープ巻き部に連続する前記蛇腹筒部が縮むと共に、該蛇腹筒部に連続する前記第一薄肉ヒンジ部が支点となって前記中径筒部を反転させ、該反転させた中径筒部内に前記蛇腹筒部とテープ巻き部が押し込まれると共に、該中径筒部の先端と前記カバー部との間の前記第二薄肉ヒンジ部が支点となって該中径筒部が前記カバー部内に反転して押し込まれることを特徴とするグロメット。 A grommet that covers the connector connected to the terminal of the wire harness that is routed in the automobile and that can be exposed with a one-touch operation.
Is molded of an elastic body made of rubber or elastomer, and a semicircular annular and the tape winding portion of the allowed electrodeposition wire inserting cylinder portion continuously bellows tube portion to the tip, the protruding diameter direction from the tip of the bellows tube portion One thin-walled hinge part, a medium-diameter cylinder part continuous through the first thin-walled hinge part, a second thin-walled hinge part projecting in the diameter-expanding direction from the tip of the medium-diameter cylinder part, and the second thin-walled hinge part The cover has a thick, large-diameter cylindrical cover that is continuous through the handle, and a knob for backward operation and forward operation extends in the length direction on the outer peripheral surface of the cover. ,
The thickness t5 of the wire insertion tube portion, the thickness of the first thin hinge portion t1, the wall thickness of the second thin hinge portion t2, the wall thickness of the medium diameter tube portion t3, and the wall thickness of the cover portion t4 Then, t1 ≦ t2 <t5 <t3 <t4 is set,
The electric wire insertion tube portion inserted through the wire group to the electric line group is fixed by winding an adhesive tape to the tape winding portion, and a connector connected to the power line group of the terminal Tsu covered by the cover portion,
To project the previous SL connector to the outside from the cover part, retracting the cover portion with the knob piece, the bellows-like cylindrical portion continuous in the tape winding portion which is fixed to the wire group is The first bellows hinge portion that continues to the bellows tube portion is used as a fulcrum to reverse the medium diameter tube portion, and the bellows tube portion and the tape winding portion are pushed into the inverted medium diameter tube portion. In addition, the grommet is characterized in that the second cylindrical hinge portion between the tip of the middle diameter cylindrical portion and the cover portion serves as a fulcrum and the middle diameter cylindrical portion is inverted and pushed into the cover portion . 前記カバー部の肉厚ｔ４は第一、第二薄肉ヒンジ部の肉厚ｔ１、ｔ２の３倍〜５倍とすると共に中径筒部の肉厚ｔ３の２〜３倍未満としている請求項１に記載のグロメット。 The wall thickness t4 of the cover part is 3 to 5 times the wall thickness t1 and t2 of the first and second thin-walled hinge parts and is less than 2 to 3 times the wall thickness t3 of the medium-diameter cylindrical part. Grommet described in.

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