JP3915229B2 - Grommet - Google Patents

Grommet Download PDF

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Publication number
JP3915229B2
JP3915229B2 JP04412598A JP4412598A JP3915229B2 JP 3915229 B2 JP3915229 B2 JP 3915229B2 JP 04412598 A JP04412598 A JP 04412598A JP 4412598 A JP4412598 A JP 4412598A JP 3915229 B2 JP3915229 B2 JP 3915229B2
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Japan
Prior art keywords
diameter cylindrical
cylindrical portion
hole
grommet
pulling
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JPH11252749A (en
Inventor
健男 坂下
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Sumitomo Wiring Systems Ltd
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Sumitomo Wiring Systems Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、自動車用ワイヤハーネスに取り付けて車体パネルの貫通穴に装着するグロメットに関し、詳しくは、特に自動車の解体処理時等において、ワイヤハーネスをグロメットと共に容易に取り外すことができるようにするものである
【0002】
【従来の技術】
自動車用ワイヤハーネスは、図8(A)に示すように、例えば室内2とエンジンルーム3との間を仕切る車体パネル4の貫通穴4aを通して配索する場合、ゴムあるいはエラストマーからなるグロメット1を介して装着される(特開平9−289725号公報)。上記グロメット1は、小径筒部1aと拡径筒部1bを連続してなり、エンジンルーム3側に配置する上記小径筒部1bをワイヤハーネスW/Hに外嵌してテープTにて巻き付け固定している。一方、上記拡径筒部1bは、貫通穴4aに内嵌する係止溝1cを外周に形成している。
【0003】
そして、貫通穴4aに対し、室内2側からエンジンルーム3側へ向かってワイヤハーネスW/Hを挿通するのに伴って、グロメット1を小径筒部1aから拡径筒部1bへ順次移行させることで、上記係止溝1cが貫通穴4aに内嵌して装着される。
【0004】
【課題を解決するための手段】
近年、資源を有効利用することが要望されており、自動車においても部品を材料の種類毎に分離してリサイクルできるようにすることが求められている。従って、廃車となった自動車の解体時に、車体パネル4からワイヤハーネスW/Hを容易に取り外しできるようにすることが必要となる。
【0005】
ところが、車体パネル4の貫通穴4aを通して配索されたワイヤハーネスW/Hは、上記構成からなるグロメット1を介して装着されているため、その取り外し操作が困難である。即ち、グロメット1は、係止溝1cが貫通穴4aに内嵌し、しかも拡径筒部1bの室内2側の端部の鍔部1dは、装着時のストッパー的機能をなすため通常肉厚に形成されている。しかも、ワイヤハーネスW/Hの取り外し時には、引っ張りスペースの関係でエンジンルーム3側にワイヤハーネスW/Hを引っ張る必要がある。このため、図8(B)(C)に示すように、ワイヤハーネスW/Hの取り外しのための引っ張り操作に際し、上記肉厚の鍔部1dが大きな抵抗となって、非常に労力を要する操作が必要となっていた。
【0006】
本発明は上記した問題に鑑みてなされたもので、車体パネルの貫通穴からのワイヤハーネスの取り外しに際し、グロメットの拡径筒部の鍔部を内方へ強制的に引っ張り込むようにすることで、自動車の解体時におけるワイヤハーネスの取り外し操作の作業性を向上させるようにするものである。
【0007】
【課題を解決するための手段】
上記課題を解決するため、本発明は、ワイヤハーネスに外嵌される小径筒部と、該小径筒部に連続すると共に、車体パネルの貫通穴に内嵌する係止溝を外周に設けた拡径筒部とからなり、上記係止溝にて区割りされた拡径筒部の端縁部を、貫通穴の周囲に当接して係止する鍔部となした弾性部材よりなるグロメットにおいて、
上記鍔部に非伸縮性の線材よりなる引っ張り補助部材の一端を、上記鍔部の内部を挿通させると共に該引っ張り補助部材の一端に形成した係止部を鍔部の端面に係止して固定し、該引っ張り補助部材の他端を上記拡径筒部および小径筒部内の連通する中空部を通して延出し、あるいは前記引っ張り補助部材の少なくとも一部を上記拡径筒部および/または小径筒部の内部に埋設して延出し、該延出させた端部に固定基部を設けており、
上記車体パネルの貫通穴に上記拡径筒部の係止溝を内嵌した状態で、上記引っ張り補助部材の固定基部をワイヤハーネスと共に貫通穴から遠ざかる方向へ引っ張ることにより、上記鍔部が上記引っ張り補助部材に引っ張られて貫通穴の内方へ引き込まれる構成としていることを特徴とするグロメットを提供している。
【0008】
具体的には、上記引っ張り補助部材の固定基部は、ワイヤハーネスの外周に巻き付けられるようにし、小径筒部のワイヤハーネス外周へのテープ巻き固定時に、ワイヤハーネスの外周に直接テープ巻き固定するようにしている。また、上記引っ張り補助部材の固定基部は、小径筒部に埋設するようにして係止固定する構成としてもよく、この場合、小径筒部と共にのワイヤハーネス外周へ間接的にテープ巻き固定される。
【0009】
上記構成によれば、車体パネルの貫通穴への拡径筒部の内嵌状態で、上記引っ張り補助部材の固定基部を小径筒部およびワイヤハーネスと共に貫通穴から遠ざかる方向へ引っ張ることにより、上記鍔部が上記引っ張り補助部材に引っ張られて貫通穴の内方へ引き込まれる。即ち、上記引っ張り操作によりグロメットは、弾性部材からなるため、小径筒部から拡径筒部間の肉薄部分で伸長するが、引っ張り補助部材は非伸縮性の部材からなるため、引っ張り操作に連動して上記鍔部が初期段階で貫通穴の内方へ引き込まれることになる。よって、鍔部の一箇所が貫通穴の内方へ引き込まれるのに鍔部全体が順次追従するため、貫通穴からのグロメットの取り外しが容易かつ円滑に行われ、取り外し操作の作業性を向上することができる。
【0010】
上記鍔部へ係止固定する引っ張り補助部材は、上記鍔部の内部に挿通して上記貫通穴の周囲の車体パネルとの当接面側に至らせ、さらに鍔部の外側を経由して上記拡径筒部内へ延出するのが好ましい。即ち、上記鍔部に対する引っ張り補助部材の引っ張り力が、鍔部の外側から車体パネルとの当接面にかけて直接作用するため、貫通穴内への鍔部の引き込みより効果的となる。
【0011】
上記のように、引っ張り補助部材は、少なくとも一部が上記拡径筒部および/または小径筒部の内部に埋設されるようにしてもよい。これにより、引っ張り補助部材をグロメット本体と一体として取り扱うことができ、ワイヤハーネスへのグロメットの取付時に、引っ張り補助部材を引っ張り作用に適した所定位置に配置できる。
【0012】
上記引っ張り補助部材は、上記鍔部の円周等間隔毎に複数備えるのが好ましい。このようにすれば、上記鍔部は円周上の均等なポイントから貫通穴の内部へ一気に引き込むことができる。
【0013】
【発明の実施形態】
以下、本発明の実施形態を図面を参照して説明する。
図1乃至図3に示すように、第1実施形態のグロメット11は、ゴムまたはエラストマー等の弾性部材からなり、ワイヤハーネスW/Hに外嵌されてテープTで巻き付け固定される小径筒部11aと、該小径筒部11aの一端に連続する拡径筒部11bと、該径筒部11bと小径筒部11aを通して配置された引っ張り補助部材15からなっている。
【0014】
上記拡径筒部11bの外周には、自動車の室内12とエンジンルーム13とを区割りする車体パネル14の貫通穴14aに内嵌する係止溝11cを設け、該係止溝11cの内嵌状態で貫通穴14での防水、防塵を図っている。係止溝11cにて区割りされた拡径筒部11bの端縁部は、貫通穴14aの周囲に室内12側から当接する肉厚の鍔部11dとしている。一方、小径筒部11aには、ワイヤハーネスW/H外周へのテープ巻き固定用に一部を軸方向に延出形成した舌片11eを設けている。
【0015】
上記引っ張り補助部材15は金属ワイヤー、樹脂材等の非伸縮性の強度のある線材からなり、上記鍔部11d端面側から挿通して一端に形成した係止部15aで端面に係止し、他端方を鍔部11dの内部を縦断するように挿通して貫通穴14a周縁の車体パネル14との当接面側に突出させる。ついで、突出した引っ掛け補助部材15の端部を折り返して鍔部11dの外側に巻き付けるように経由して、上記拡径筒部11b内の通路11fへ延出し、さらに小径筒部11a内を通して該小径筒部11aの外方へ延出している。
【0016】
小径筒部1aから外方に突出した引っ張り補助部材15の端部は、ワイヤハーネスW/Hの外周に固定するための固定基部15bとし、第1実施形態においては、ワイヤハーネスW/Hの外周に直接巻き付けてテープTで固定されるようにしている。
【0017】
上記グロメット11は、図3に示すように、ワイヤハーネスW/Hの外周に小径筒部11aを外嵌すると共に、引っ掛け補助部材15の固定基部15bを巻き付け、この状態において上記固定基部15bと小径筒部11aおよび舌片11eをテープTによりワイヤハーネスW/H外周に巻き付け固定する。そしてワイヤハーネスW/Hを、車体パネル14の貫通穴14aに対し、室内12側からエンジンルーム13側へ挿通する過程で、グロメット11の拡径筒部11bの係止溝11cを貫通穴14aに内嵌することで、グロメット11を介してワイヤハーネスW/Hを装着する。
【0018】
一方、自動車の解体時におけるワイヤハーネスW/Hの取り外しに際しては、図4に示すように、ワイヤハーネスW/Hをエンジンルーム13側へ引っ張ると、グロメット11は鍔部11dの係止作用による抵抗を受け、小径筒部11aと拡径筒部11bとの間で弾性的に伸長した状態となる。このとき、引っ張り補助部材15もワイヤハーネスW/Hと共に引っ張られるが、引っ張り補助部材15は非伸縮性部材からなるため、鍔部11dに係止した係止部11aが引っ張られるのに伴って、鍔部11dは貫通穴14a内に引き込まれるように捲られる。なお、この際、引っ張り補助部材15は鍔部11dの外側を経由して係止部11aで係止されているため、鍔部11dの外側端縁から確実に捲り上げることができる。
【0019】
ついで、ワイヤハーネスW/Hを更に引っ張ると、上記のようにして鍔部11dの一部が貫通穴14a内に引き込まれるのに誘導されて、鍔部11dの他の部分も順次貫通穴14a内に引き込まれることでグロメット11が貫通穴14aから外され、よってワイヤハーネスW/H全体を取り外すことができる。
【0020】
図5は第2実施形態のグロメット21を示し、一端を拡径筒部21bの鍔部21dに係止した引っ張り補助部材25の小径筒部21a内を通す部分を、該小径筒部21aにモールド成型により埋設している。また、引っ張り補助部材25の固定基部25bは、鍔部21dの係止部25aと同様に先端に係止部25cを形成して舌片21eの端部に係止している。
【0021】
上記構成によれば、引っ張り補助部材15が部分的ではあるが、グロメット21に埋設一体化されているため、グロメット21のワイヤハーネスへの取付操作により、同時に引っ張り補助部材25をワイヤハーネスW/Hに固定できる。なお、この場合固定基部25bは、小径筒部21aの舌片21eと共にワイヤハーネスW/H外周に間接的に固定される。
【0022】
図6は第3実施形態のグロメット31を示し、引っ張り補助部材35を小径筒部31aから拡径筒部31bの全域にわたってモールド成型により埋設するようにしている。鍔部31dへの固定部は外部に突出させた先端を鈎状に形成して係止部35cとしている。
【0023】
なお、上記各実施形態においては、引っ張り補助部材15、25、35を一箇所に設けた例を示したが、図 に示すように、鍔部15d、25d、35dの円周等間隔位置に複数設ける構成としてもよい。このようにすれば、上記鍔部15d、25d、35dを円周上の均等なポイントから貫通穴14aの内部へ一気に引き込むことができる。
【0024】
【発明の効果】
以上の説明より明きらかなように、本発明のグロメットでは、車体パネルの貫通穴からのワイヤハーネスの取り外しに際し、ワイヤハーネスの引っ張り動作に連動して、貫通穴に係止するグロメットの鍔部を、引っ張り補助部材により捲り上げて強制的に貫通穴の内方へ引き込むことができる。よって、従来のように鍔部の係止に抗して無理やりグロメットを変形させて外す操作に比較して、作業性および労力を大幅に低減することができ、リサイクル促進に貢献することができる。
【図面の簡単な説明】
【図1】 本発明の第1実施形態のグロメットを示す斜視図である。
【図2】 第1実施形態のグロメットの断面図である。
【図3】 第1実施形態のグロメットの装着状態を示す図である。
【図4】 第1実施形態のグロメットの取り外し操作状態を示す断面図である。
【図5】 第2実施形態のグロメットの断面図である。
【図6】 第3実施形態のグロメットの断面図である。
【図7】 (A)(B)は引っ張り補助部材の取付状態の変形例を示す図である。
【図8】 (A)(B)(C)は従来例を示す図である。
【符号の説明】
11、21、31 グロメット
11a、21a 小径筒部
11b、21b 拡径筒部
11c 係止溝
11d、21d、31d 鍔部
14 車体パネル
14a 貫通穴
15、25、35 引っ張り補助部材
15a 係止部
15b、25b、35b 固定基部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a grommet that is attached to a wire harness for an automobile and is attached to a through-hole of a vehicle body panel. More specifically, the grommet can be easily removed together with the grommet, particularly at the time of dismantling of an automobile. There is [0002]
[Prior art]
As shown in FIG. 8A, for example, when a wiring harness for an automobile is routed through a through hole 4a of a vehicle body panel 4 that partitions between a room 2 and an engine room 3, a grommet 1 made of rubber or elastomer is used. (Japanese Patent Laid-Open No. 9-289725). The grommet 1 includes a small-diameter cylindrical portion 1a and an enlarged-diameter cylindrical portion 1b that are continuously connected. The small-diameter cylindrical portion 1b disposed on the engine room 3 side is externally fitted to the wire harness W / H and fixed with a tape T. is doing. On the other hand, the said enlarged diameter cylinder part 1b forms the locking groove 1c fitted inside the through-hole 4a in the outer periphery.
[0003]
Then, as the wire harness W / H is inserted from the indoor 2 side toward the engine room 3 side with respect to the through hole 4a, the grommet 1 is sequentially shifted from the small diameter cylindrical portion 1a to the large diameter cylindrical portion 1b. Thus, the locking groove 1c is fitted into the through hole 4a.
[0004]
[Means for Solving the Problems]
In recent years, there has been a demand for effective use of resources, and even in automobiles, it is required to be able to separate and recycle parts for each type of material. Therefore, it is necessary to be able to easily remove the wire harness W / H from the vehicle body panel 4 at the time of dismantling the automobile that has become a scrapped vehicle.
[0005]
However, since the wire harness W / H routed through the through hole 4a of the vehicle body panel 4 is mounted via the grommet 1 having the above-described configuration, it is difficult to remove the wire harness W / H. That is, in the grommet 1, the locking groove 1c is fitted in the through-hole 4a, and the flange portion 1d at the end on the indoor 2 side of the enlarged diameter cylindrical portion 1b functions as a stopper at the time of mounting, so that it is usually thick. Is formed. Moreover, when removing the wire harness W / H, it is necessary to pull the wire harness W / H toward the engine room 3 due to the pulling space. For this reason, as shown in FIGS. 8B and 8C, when the pulling operation for removing the wire harness W / H is performed, the thick collar 1d becomes a large resistance, and an operation that requires very much labor. Was needed.
[0006]
The present invention has been made in view of the above-described problems, and when the wire harness is removed from the through hole of the vehicle body panel, the flange portion of the expanded cylindrical portion of the grommet is forcibly pulled inward. The workability of the wire harness removal operation when the automobile is dismantled is improved.
[0007]
[Means for Solving the Problems]
To solve the above problems, the present invention includes a small-diameter cylindrical portion which is fitted to the follower unpleasant harness, as well as continuous to the small-diameter cylindrical portion, provided with a locking groove fitted into the through hole of the body panel to the outer periphery In the grommet made of an elastic member made of an enlarged diameter cylindrical portion, and an end portion of the enlarged diameter cylindrical portion divided by the locking groove as a collar portion that comes into contact with and engages with the periphery of the through hole,
One end of a tension assisting member made of a non-stretchable wire rod is inserted into the collar part, and the locking part formed at one end of the tension assisting member is anchored to the end surface of the collar part and fixed. And extending the other end of the auxiliary pulling member through the hollow portion communicating in the enlarged diameter cylindrical portion and the small diameter cylindrical portion , or at least a part of the auxiliary pulling member of the enlarged diameter cylindrical portion and / or the small diameter cylindrical portion. Embedded and extended inside, provided with a fixed base at the extended end,
By pulling the fixed base portion of the pulling auxiliary member in the direction away from the through hole together with the wire harness in a state where the locking groove of the enlarged diameter cylindrical portion is fitted in the through hole of the vehicle body panel, the flange portion is pulled. A grommet is provided that is pulled by an auxiliary member and pulled inward of a through hole.
[0008]
Specifically, the fixing base of the pulling auxiliary member is wound around the outer periphery of the wire harness, and when the tape is fixed around the outer periphery of the wire harness of the small-diameter cylindrical portion, it is directly fixed around the outer periphery of the wire harness. ing. Further, the fixed base portion of the pulling auxiliary member may be configured to be locked and fixed so as to be embedded in the small-diameter cylindrical portion. In this case, the fixed base portion is indirectly wound around the wire harness together with the small-diameter cylindrical portion.
[0009]
According to the above configuration, in the state in which the enlarged diameter cylindrical portion is fitted into the through hole of the vehicle body panel, the fixed base portion of the pulling auxiliary member is pulled together with the small diameter cylindrical portion and the wire harness in the direction away from the through hole. The portion is pulled by the pulling auxiliary member and pulled inward of the through hole. That is, since the grommet is made of an elastic member by the above pulling operation, the grommet is extended at the thin portion between the small-diameter cylindrical portion and the enlarged-diameter cylindrical portion, but the pulling auxiliary member is made of a non-stretchable member. Thus, the collar portion is pulled inward of the through hole in the initial stage. Therefore, since one part of the collar part is drawn inward of the through hole, the entire collar part sequentially follows, so that the grommet can be easily and smoothly removed from the through hole, and the workability of the removal operation is improved. be able to.
[0010]
The pulling auxiliary member for locking and fixing to the collar part is inserted into the collar part to reach the contact surface side with the vehicle body panel around the through hole, and further through the outside of the collar part. it has preferred to extend to the enlarged diameter cylindrical portion. In other words, since the pulling force of the pull assisting member with respect to the hook part acts directly from the outer side of the hook part to the contact surface with the vehicle body panel, the pulling of the hook part into the through hole becomes more effective.
[0011]
As described above, pulling the auxiliary member, but it may also be so at least partially embedded in the interior of the flare tube portion and / or the small diameter cylinder portion. Thereby, a tension | pulling auxiliary member can be handled as integral with a grommet main body, and a tension | pulling auxiliary member can be arrange | positioned in the predetermined position suitable for a tension | pulling action at the time of attachment of the grommet to a wire harness.
[0012]
The tension support member is provided with the plurality is not preferable for each circumference equidistant the flange section. If it does in this way, the said collar part can be drawn at a stretch into the inside of a through-hole from the equal point on a circumference.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the grommet 11 of the first embodiment is made of an elastic member such as rubber or elastomer, and is a small-diameter cylindrical portion 11 a that is externally fitted to the wire harness W / H and is wound and fixed with a tape T. When a flare tube portion 11b continuous with one end of the small-diameter cylindrical portion 11a, is made of pulling the auxiliary member 15 arranged through the expansion diameter cylindrical portion 11b and the small diameter cylinder portion 11a.
[0014]
A locking groove 11c that fits into the through hole 14a of the vehicle body panel 14 that divides the interior 12 of the automobile and the engine room 13 is provided on the outer periphery of the enlarged diameter cylindrical portion 11b. The through hole 14 is designed to be waterproof and dustproof. The end edge portion of the enlarged diameter cylindrical portion 11b divided by the locking groove 11c is a thick flange portion 11d that comes into contact with the periphery of the through hole 14a from the interior 12 side. On the other hand, the small-diameter cylindrical portion 11a is provided with a tongue piece 11e partially extending in the axial direction for fixing the tape around the outer periphery of the wire harness W / H.
[0015]
The pulling auxiliary member 15 is made of a non-stretchable strong wire such as a metal wire or a resin material, and is locked to the end surface by a locking portion 15a that is inserted from the end surface side of the flange portion 11d and formed at one end. An end is inserted so that the inside of the collar part 11d may be cut | disconnected longitudinally, and it protrudes in the contact surface side with the vehicle body panel 14 of the through-hole 14a periphery. Subsequently, the end portion of the protruding hooking auxiliary member 15 is folded back and wound around the outside of the flange portion 11d so as to extend to the passage 11f in the enlarged diameter cylindrical portion 11b, and further through the inside of the smaller diameter cylindrical portion 11a. The tube portion 11a extends outward.
[0016]
The end portion of the pulling auxiliary member 15 protruding outward from the small-diameter cylindrical portion 1a is a fixed base portion 15b for fixing to the outer periphery of the wire harness W / H. In the first embodiment, the outer periphery of the wire harness W / H is It is directly wound around and fixed with a tape T.
[0017]
As shown in FIG. 3, the grommet 11 has a small-diameter cylindrical portion 11a fitted around the outer periphery of the wire harness W / H, and a fixed base portion 15b of the hooking auxiliary member 15 is wound around. The cylindrical portion 11a and the tongue piece 11e are wound and fixed around the wire harness W / H by the tape T. In the process of inserting the wire harness W / H into the through hole 14a of the vehicle body panel 14 from the interior 12 side to the engine room 13 side, the locking groove 11c of the enlarged diameter cylindrical portion 11b of the grommet 11 is made into the through hole 14a. The wire harness W / H is mounted via the grommet 11 by being internally fitted.
[0018]
On the other hand, when the wire harness W / H is removed when the automobile is disassembled, as shown in FIG. 4, when the wire harness W / H is pulled toward the engine room 13, the grommet 11 has a resistance due to the locking action of the flange portion 11d. Is received and elastically extended between the small diameter cylindrical portion 11a and the enlarged diameter cylindrical portion 11b. At this time, the tension assisting member 15 is also pulled together with the wire harness W / H. However, since the tension assisting member 15 is made of a non-stretchable member, as the locking portion 11a locked to the flange portion 11d is pulled, The flange portion 11d is wound so as to be pulled into the through hole 14a. At this time, since the auxiliary pulling member 15 is locked by the locking portion 11a via the outside of the flange portion 11d, it can be reliably lifted from the outer edge of the flange portion 11d.
[0019]
Next, when the wire harness W / H is further pulled, a part of the flange part 11d is guided to be pulled into the through hole 14a as described above, and the other part of the flange part 11d is also sequentially inserted into the through hole 14a. The grommet 11 is removed from the through hole 14a by being pulled in, and thus the entire wire harness W / H can be removed.
[0020]
FIG. 5 shows a grommet 21 according to the second embodiment, and a portion passing through the small-diameter cylindrical portion 21a of the pulling auxiliary member 25 whose one end is engaged with the flange portion 21d of the large-diameter cylindrical portion 21b is molded into the small-diameter cylindrical portion 21a. It is buried by molding. Further, the fixed base portion 25b of the auxiliary pulling member 25 is locked to the end portion of the tongue piece 21e by forming a locking portion 25c at the tip like the locking portion 25a of the flange portion 21d.
[0021]
According to the above configuration, although the pull assist member 15 is partially embedded in the grommet 21, the pull assist member 25 is simultaneously attached to the wire harness W / H by the mounting operation of the grommet 21 to the wire harness. Can be fixed. In this case, the fixed base portion 25b is indirectly fixed to the outer periphery of the wire harness W / H together with the tongue piece 21e of the small diameter cylindrical portion 21a.
[0022]
FIG. 6 shows the grommet 31 of the third embodiment, in which the tension assisting member 35 is embedded by molding from the entire area of the small diameter cylindrical portion 31a to the large diameter cylindrical portion 31b. The fixing portion to the flange portion 31d is formed as a hook shape with a tip protruding outward to form a locking portion 35c.
[0023]
In each of the above embodiments, an example in which the tension assisting members 15, 25, and 35 are provided at one place has been shown. However, as shown in the figure, a plurality of tension assisting members 15, 25 d, and 35 d are arranged at equal circumferential positions. It is good also as a structure to provide. If it does in this way, the said collar parts 15d, 25d, and 35d can be drawn at a stretch into the inside of the through-hole 14a from the equal point on the circumference.
[0024]
【The invention's effect】
As is clear from the above description, in the grommet of the present invention, when the wire harness is removed from the through hole of the vehicle body panel, the grommet's buttocks that are locked to the through hole are interlocked with the pulling operation of the wire harness. Then, it can be pulled up by the pulling auxiliary member and forcibly pulled into the through hole. Therefore, compared with the conventional operation of forcibly deforming and removing the grommet against the locking of the buttock, the workability and labor can be greatly reduced, which contributes to the promotion of recycling.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a grommet according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view of the grommet according to the first embodiment.
FIG. 3 is a view showing a mounting state of the grommet according to the first embodiment.
FIG. 4 is a cross-sectional view showing a grommet removal operation state of the first embodiment.
FIG. 5 is a cross-sectional view of a grommet according to a second embodiment.
FIG. 6 is a cross-sectional view of a grommet according to a third embodiment.
FIGS. 7A and 7B are views showing a modification of the attached state of the tension assisting member.
FIGS. 8A, 8B, and 8C are diagrams showing a conventional example.
[Explanation of symbols]
11, 21, 31 Grommet 11a, 21a Small-diameter cylindrical portion 11b, 21b Large-diameter cylindrical portion 11c Locking groove 11d, 21d, 31d Ridge part 14 Body panel 14a Through hole 15, 25, 35 Pull auxiliary member 15a Locking part 15b, 25b, 35b Fixed base

Claims (3)

ワイヤハーネスに外嵌される小径筒部と、該小径筒部に連続すると共に、車体パネルの貫通穴に内嵌する係止溝を外周に設けた拡径筒部とからなり、上記係止溝にて区割りされた拡径筒部の端縁部を、貫通穴の周囲に当接して係止する鍔部となした弾性部材よりなるグロメットにおいて、
上記鍔部に非伸縮性の線材よりなる引っ張り補助部材の一端を、上記鍔部の内部を挿通させると共に該引っ張り補助部材の一端に形成した係止部を鍔部の端面に係止して固定し、該引っ張り補助部材の他端を上記拡径筒部および小径筒部内の連通する中空部を通して延出し、あるいは前記引っ張り補助部材の少なくとも一部を上記拡径筒部および/または小径筒部の内部に埋設して延出し、該延出させた端部に固定基部を設けており、
上記車体パネルの貫通穴に上記拡径筒部の係止溝を内嵌した状態で、上記引っ張り補助部材の固定基部をワイヤハーネスと共に貫通穴から遠ざかる方向へ引っ張ることにより、上記鍔部が上記引っ張り補助部材に引っ張られて貫通穴の内方へ引き込まれる構成としていることを特徴とするグロメット。
The locking groove comprises: a small-diameter cylindrical portion that is externally fitted to the wire harness; and an enlarged-diameter cylindrical portion that is continuous with the small-diameter cylindrical portion and has a locking groove that is fitted in a through hole of the vehicle body panel on the outer periphery. In the grommet made of an elastic member that is a flange portion that abuts and engages the periphery of the through hole with the end edge portion of the enlarged diameter cylindrical portion divided by
One end of a tension assisting member made of a non-stretchable wire rod is inserted into the collar part, and the locking part formed at one end of the tension assisting member is anchored to the end surface of the collar part and fixed. And extending the other end of the auxiliary pulling member through the hollow portion communicating in the enlarged diameter cylindrical portion and the small diameter cylindrical portion , or at least a part of the auxiliary pulling member of the enlarged diameter cylindrical portion and / or the small diameter cylindrical portion. Embedded and extended inside, provided with a fixed base at the extended end,
By pulling the fixed base portion of the pulling auxiliary member in the direction away from the through hole together with the wire harness in a state where the locking groove of the enlarged diameter cylindrical portion is fitted in the through hole of the vehicle body panel, the flange portion is pulled. A grommet that is pulled by an auxiliary member and pulled inward of a through hole.
上記鍔部へ係止固定する引っ張り補助部材は、上記鍔部の内部に挿通して上記貫通穴の周囲の車体パネルとの当接面側に至らせ、さらに鍔部の外側を経由して上記拡径筒部内へ延出している請求項1に記載のグロメット。The pulling auxiliary member for locking and fixing to the collar part is inserted into the collar part to reach the contact surface side with the vehicle body panel around the through hole, and further through the outside of the collar part. The grommet according to claim 1, wherein the grommet extends into the enlarged diameter cylindrical portion. 上記引っ張り補助部材は、上記鍔部の円周等間隔毎に複数備えられている請求項1または請求項2に記載のグロメット。 The grommet according to claim 1 or 2, wherein a plurality of the pulling auxiliary members are provided at equal circumferential intervals of the flange portion .
JP04412598A 1998-02-25 1998-02-25 Grommet Expired - Fee Related JP3915229B2 (en)

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KR101315731B1 (en) * 2012-07-23 2013-10-17 주식회사 경신 Grommet for fixing wire harness
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