JP2009269566A - Grommet - Google Patents

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JP2009269566A
JP2009269566A JP2008124051A JP2008124051A JP2009269566A JP 2009269566 A JP2009269566 A JP 2009269566A JP 2008124051 A JP2008124051 A JP 2008124051A JP 2008124051 A JP2008124051 A JP 2008124051A JP 2009269566 A JP2009269566 A JP 2009269566A
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diameter cylindrical
cylindrical portion
eccentric
hole
grommet
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JP5136192B2 (en
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Takeshi Mizuhira
剛司 水平
Takeshi Taniguchi
剛 谷口
Yuki Takeuchi
勇輝 竹内
Hiroyuki Wakamatsu
洋行 若松
Makoto Sunohara
誠 須野原
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Sumitomo Wiring Systems Ltd
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Sumitomo Wiring Systems Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To facilitate engagement work of a grommet into an inclined through-hole of a back door or the like. <P>SOLUTION: The grommet comprising a rubber or an elastomer is outer-sheathed to a wire harness wired in an automobile and is provided with an outer diameter cylinder part provided with an annular engagement groove on an outer peripheral surface and a small diameter cylinder part continued to the large diameter cylinder part. The annular engagement groove is engaged with the through-hole of a panel by pulling the small diameter cylinder part. The small diameter cylinder part is provided with an eccentric continuation part eccentrically continued to the large diameter cylinder part. The eccentric continuation part is projected to a vertical lower side relative to the panel becoming an inclination direction at mounting to the panel. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、グロメットに関し、特に、バックドアと車体との間に架け渡すワイヤハーネスに外装するグロメットにおいてドア側貫通穴への装着性を向上させるものである。   The present invention relates to a grommet, and in particular, to improve the mountability to a door-side through hole in a grommet that is externally mounted on a wire harness that runs between a back door and a vehicle body.

自動車のバックドアに搭載される電装品に接続されるドアハーネスは車体側へ架け渡して、車体側に配索されているワイヤハーネスには、ワイヤハーネスの保護用にグロメットが装着されている。   A door harness connected to an electrical component mounted on a back door of an automobile is bridged to the vehicle body side, and a grommet is attached to the wire harness routed on the vehicle body side for protecting the wire harness.

この種のグロメットとして、本出願人は特開２００１−３２８７１号公報（特許文献１）で、図６（Ａ）（Ｂ）に示すグロメットを提供している。
グロメット１は、図６（Ａ）に示すように、バックドア２に配索されるドアハーネスの車体接続側に予め取り付けられ、バックドア２のパネル２ａの車体側端面に設けた貫通穴を通して、車体の端面に設けた貫通穴へと配索している。
グロメット１は、ゴムまたはエラストマーで成形し、図６（Ｂ）に示すように、両端に貫通穴へ係止される大径部１ａ、１ｂを備え、両側の大径部１ａ、１ｂと夫々屈曲した小径筒部１ｃ、１ｄを介して蛇腹筒部１ｅで連続した形状としている。即ち、蛇腹筒部１ｅの軸線方向に対して両側の大径部１ａ、１ｂは異なる方向に小径筒部１ｃ、１ｄを介して屈曲させている。
前記グロメット１の小径筒部１ｃ、１ｄは、大径筒部１ａ、１ｂに連続する部分１ｃ−１、１ｄ−１の中心軸線は同一として連続させた後に屈曲させている。 As this type of grommet, the present applicant has provided a grommet shown in FIGS. 6A and 6B in Japanese Patent Laid-Open No. 2001-32871 (Patent Document 1).
As shown in FIG. 6 (A), the grommet 1 is attached in advance to the vehicle body connection side of the door harness routed to the back door 2, and passes through a through hole provided in the vehicle body side end surface of the panel 2a of the back door 2. It is routed to the through hole provided on the end face of the car body.
The grommet 1 is formed of rubber or elastomer and has large diameter portions 1a and 1b that are locked to the through holes at both ends as shown in FIG. 6B, and is bent with the large diameter portions 1a and 1b on both sides. It is made into the shape which followed the bellows cylinder part 1e via the small diameter cylinder parts 1c and 1d which were made. That is, the large diameter portions 1a and 1b on both sides with respect to the axial direction of the bellows tube portion 1e are bent in different directions via the small diameter tube portions 1c and 1d.
The small diameter cylindrical portions 1c and 1d of the grommet 1 are bent after the central axes of the portions 1c-1 and 1d-1 continuous with the large diameter cylindrical portions 1a and 1b are made the same.

前記グロメット１で外装したワイヤハーネスは、車体に連結したバックドア２に図７（Ａ）に示すように、バックドア２を上方へと最大限に開いた状態で取り付られる。その際、バックドア２のドア側貫通穴２ａを設けたドアインナーパネル２ｂは水平方向Ｓ１の車体の設置面に対して傾斜方向Ｓ２となり、２０〜５０度傾斜している。   The wire harness sheathed with the grommet 1 is attached to the back door 2 connected to the vehicle body with the back door 2 fully opened upward as shown in FIG. At that time, the door inner panel 2b provided with the door-side through hole 2a of the back door 2 becomes the inclination direction S2 with respect to the installation surface of the vehicle body in the horizontal direction S1, and is inclined 20 to 50 degrees.

このように傾斜したバックドア２に対して、図７（Ｂ）に示すように、ワイヤハーネスに取り付けたグロメットは、バックドア側のインナーパネルとアウターパネルの間の挿通空間を通して挿入し、該挿通空間の先端に設けたドア側貫通穴より車体３側に引き出し、ドア側貫通穴２ａにドア側の大径筒部１ａの外周面に凹設した環状係止溝１ａ−１を係止している。
上記グロメットの取付作業時に、作業員はバックドア２の下方から、ドア側貫通穴より引き出されている小径筒部１ｄを下方へ引っ張って大径筒部１ａを貫通穴２ａに押し込み、その外周の環状係止溝をドア側貫通穴に係止している。 As shown in FIG. 7B, the grommet attached to the wire harness is inserted through the insertion space between the inner panel and the outer panel on the back door side with respect to the inclined back door 2 as shown in FIG. Pulled out to the vehicle body 3 side from the door-side through hole provided at the front end of the space, and locked to the door-side through hole 2a is an annular locking groove 1a-1 recessed in the outer peripheral surface of the door-side large-diameter cylindrical portion 1a. Yes.
During the grommet mounting operation, an operator pulls the small-diameter cylindrical portion 1d drawn from the door-side through hole downward from below the back door 2 and pushes the large-diameter cylindrical portion 1a into the through-hole 2a. The annular locking groove is locked to the door side through hole.

前記作業時において、図８に示すように、ドア側の貫通穴２ａが前記のように水平方向ではなく傾斜しているため、小径筒部１ｄを作業者が下向き垂直方向に引っ張っても貫通穴２ａに環状係止溝１ａ−１を正確に位置合わせすることが困難となる。よって、小径筒部１ｄの中心軸線が貫通穴２ａの中心軸線と一致するように小径筒部を矢印方向へ捻って小径筒部１ｄを下方へ引っ張る必要がある。
この作業が連続すると、作業者の手首に負担を強いることとなり、作業上で改善の余地がある。
なお、バックドアにグロメットを係止する場合に限らず、貫通穴を設けたパネルが小径筒部の引っ張り方向に対して直交する方向でない場合には、前記同様な問題が発生し、作業者に負担をかける問題がある。 At the time of the work, as shown in FIG. 8, since the through-hole 2a on the door side is inclined not in the horizontal direction as described above, even if the operator pulls the small-diameter cylindrical portion 1d in the downward vertical direction, the through-hole It becomes difficult to accurately align the annular locking groove 1a-1 with 2a. Therefore, it is necessary to twist the small-diameter cylindrical portion 1d in the arrow direction and pull the small-diameter cylindrical portion 1d downward so that the central axis of the small-diameter cylindrical portion 1d coincides with the central axis of the through hole 2a.
If this operation is continued, a burden is imposed on the wrist of the operator, and there is room for improvement in the operation.
In addition, not only when the grommet is locked to the back door, but when the panel provided with the through hole is not in a direction perpendicular to the pulling direction of the small-diameter cylindrical portion, the same problem occurs as described above. There is a problem that puts a burden.

特開２００１−３２８７１号公報JP 2001-32871 A

本発明は、前記問題を解消せんとするもので、グロメットの大径筒部の環状係止溝を係合するパネルが水平方向でない場合においても、大径筒部に連続する小径筒部を垂直方向の下方に引っ張って、グロメットの通し作業を行えるようにして、作業員の負担を軽減できるようにすることを課題としている。   The present invention is intended to solve the above problem, and even when the panel that engages the annular locking groove of the large-diameter cylindrical portion of the grommet is not in the horizontal direction, the small-diameter cylindrical portion that is continuous with the large-diameter cylindrical portion is vertically aligned. An object is to reduce the burden on the worker by pulling downward in the direction so that the grommet can be threaded.

前記課題を解決するため、本発明は、自動車に配索するワイヤハーネスに外装し、外周面に環状係止溝を設けた環状係止溝を外周面に設けた大径筒部と、該大径筒部に連続した小径筒部を備え、前記小径筒部を引っ張って前記環状係止溝をパネルの貫通穴に係止するゴムまたはエラストマーからなるグロメットであって、
前記小径筒部は、前記大径筒部に偏芯して連続する偏芯連続部を備え、
前記偏芯連続部を、前記パネルへの取付時に傾斜方向となる該パネルに対して垂直下方へ突出させてい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-described problems, the present invention provides a large-diameter cylindrical portion having an outer circumferential surface provided with an annular locking groove having an outer circumferential surface provided with an annular locking groove on a wire harness arranged in an automobile, A grommet made of rubber or elastomer that includes a small-diameter cylindrical portion continuous with the radial cylindrical portion, pulls the small-diameter cylindrical portion, and locks the annular locking groove to a through-hole of the panel,
The small-diameter cylindrical portion includes an eccentric continuous portion that is eccentric and continuous with the large-diameter cylindrical portion,
There is provided a grommet characterized in that the eccentric continuous portion protrudes vertically downward with respect to the panel which becomes an inclined direction when attached to the panel.

前記のように、傾斜したパネルの貫通穴にグロメットの大径筒部外周の環状係止溝を係止する場合、大径筒部の中心軸線は垂直方向から偏芯する。よって、本発明では、予め大径筒部に連続する小径筒部に、大径筒部の中心軸線方向に対しては偏芯させて、貫通穴への押し込み作業時に垂直方向下向きになる偏芯連続部を設けている。該構成とすることで、作業者は小径筒部を捻って押し込む必要はなく、真っすぐに垂直方向下向きに引っ張ると、大径筒部外周の環状係止溝を傾斜したドア側貫通穴に正確に位置合わせして係止することができ、作業者の手の負担を軽減できる。   As described above, when the annular locking groove on the outer periphery of the large-diameter cylindrical portion of the grommet is locked in the through hole of the inclined panel, the central axis of the large-diameter cylindrical portion is eccentric from the vertical direction. Therefore, in the present invention, the small-diameter cylindrical portion that is continuous with the large-diameter cylindrical portion is eccentric with respect to the central axis direction of the large-diameter cylindrical portion, and is eccentric in the vertical direction when being pushed into the through hole. A continuous part is provided. With this configuration, the operator does not need to twist and push the small-diameter cylindrical part, and when pulled straight down in the vertical direction, the annular locking groove on the outer periphery of the large-diameter cylindrical part is accurately inserted into the inclined door-side through hole. It can be aligned and locked, and the burden on the operator's hand can be reduced.

前記小径筒部の偏芯連続部には、偏芯方向と反対側の外面から前記環状係止溝側にかけて、リブを突設していることが好ましい。   It is preferable that a rib is protruded from the outer surface on the opposite side to the eccentric direction to the annular locking groove side on the eccentric continuous portion of the small diameter cylindrical portion.

即ち、小径筒部を大径筒部に偏芯連続部を介して連続させると、偏芯させた方向と対応する大径筒部の周縁と偏芯連続部の距離が近くなるため、引っ張り負荷を大きく作用させることができる。しかしながら、反対側では偏芯連続部と大径筒部の周縁との距離が離れるため、引っ張り負荷はかけにくくなる。
そのため、前記のように偏芯方向と反対側の外面から大径筒部の外面にかけて前記リブを突設している。該リブを設けることで、小径筒部に引っ張り負荷をかけた時に、リブを介して負荷が伝達でき、大径筒部の周縁に均等に負荷をかけることができる。よって、該大径筒部の周縁の環状係止溝の全周をドア側貫通穴に正確に嵌合することができる。 That is, if the small-diameter cylindrical part is continued to the large-diameter cylindrical part via the eccentric continuous part, the distance between the peripheral edge of the large-diameter cylindrical part corresponding to the eccentric direction and the eccentric continuous part becomes close. Can be made to act greatly. However, on the opposite side, the distance between the eccentric continuous portion and the peripheral edge of the large-diameter cylindrical portion is increased, so that it is difficult to apply a tensile load.
Therefore, as described above, the rib is projected from the outer surface opposite to the eccentric direction to the outer surface of the large-diameter cylindrical portion. By providing the rib, when a tensile load is applied to the small-diameter cylindrical portion, the load can be transmitted through the rib, and the load can be evenly applied to the peripheral edge of the large-diameter cylindrical portion. Therefore, the entire circumference of the annular locking groove on the periphery of the large-diameter cylindrical portion can be accurately fitted into the door-side through hole.

具体的には、前記大径筒部は前記環状係止溝を設けた円錐筒部と、該円錐筒部の縮径側に平坦な端面部を有する形状であり、該端面部に前記小径筒部の偏芯連続部の開口を設け、該端面部の外周と偏芯連続部の外周面との間に距離が広がる反偏芯方向となる部分に、該偏芯連続部の外周面から端面部の外周にかけて、複数本のリブを周方向に間隔をあけて放射状に突設している。   Specifically, the large-diameter tube portion has a shape having a conical tube portion provided with the annular locking groove and a flat end surface portion on the reduced diameter side of the conical tube portion, and the small-diameter tube is formed on the end surface portion. An end surface from the outer peripheral surface of the eccentric continuous portion is provided in a portion in the anti-eccentric direction in which an opening of the eccentric continuous portion is provided and a distance is increased between the outer periphery of the end surface portion and the outer peripheral surface of the eccentric continuous portion. A plurality of ribs project radially from the outer periphery of the section at intervals in the circumferential direction.

本発明のグロメットは、自動車のバックドアに配策するワイヤハーネスの車体への架け渡し側に外装し、バックドアのパネル間の空間を貫通させてドア側の貫通穴を通して車体側へと引き出し、先端を車体側貫通穴に係止すると共に他端をドア貫通穴に係止するバックドア用のグロメットであり、
該グロメットは、一端側に前記ドア貫通穴に係止する前記大径筒部を備えると共に、他端側に前記車体側貫通穴に係止する大径筒部を備え、これら両端の大径筒部に屈曲した小径筒部が連続し、これら小径筒部の間に山部と谷部とを交互に設けた蛇腹筒部を連続して備え、
前記ドア貫通穴に係止する前記大径筒部と偏芯連続部を介して連続する前記小径筒部は屈曲して前記蛇腹筒部に連続した形状としている。 The grommet of the present invention is externally installed on the side of the wire harness that is routed to the back door of the automobile, and is pulled out toward the vehicle body through the through hole on the door side through the space between the panels of the back door, It is a grommet for the back door that locks the front end to the vehicle body side through hole and the other end to the door through hole,
The grommet includes the large-diameter cylindrical portion that is engaged with the door through hole on one end side, and the large-diameter cylindrical portion that is engaged with the vehicle body-side through hole on the other end side. The small-diameter cylindrical part bent to the part is continuous, and the bellows cylindrical part provided alternately with the ridges and valleys between these small-diameter cylindrical parts is continuously provided,
The small-diameter cylindrical portion that is continuous via the eccentric continuous portion and the large-diameter cylindrical portion that is locked in the door through-hole is bent and has a shape that is continuous with the bellows cylindrical portion.

前述したように、本発明のグロメットは、貫通穴に係止する環状係止溝を設けた大径筒部に連続する小径筒部に偏芯連続部を設けているため、貫通穴への大径筒部の挿入姿勢が傾斜していても、偏芯連続部は垂直方向下向きに突出させているため、作業者は下方から真っすぐに下向きに引っ張るだけで、環状係止溝を貫通穴へ正確に嵌合させてグロメットを取り付けることができる。
よって、傾斜した貫通穴へのグロメットの取付作業時に、作業者は小径筒部をひねりながら引っ張る必要はなく、真っすぐに引っ張るだけで良いため、作業者の負担を低減できる。 As described above, the grommet of the present invention is provided with the eccentric continuous portion in the small-diameter cylindrical portion that is continuous with the large-diameter cylindrical portion provided with the annular locking groove that is locked in the through-hole. Even if the insertion posture of the diameter tube part is inclined, the eccentric continuous part protrudes downward in the vertical direction, so that the operator can pull the annular locking groove into the through hole accurately by pulling straight downward from below. The grommet can be attached by fitting it to
Therefore, when attaching the grommet to the inclined through hole, the operator does not have to pull the small-diameter cylindrical portion while twisting, and it is only necessary to pull the grommet straight, so that the burden on the operator can be reduced.

以下、本発明の実施形態を図面を参照して説明する。
図１〜図４に示すワイヤハーネス用のグロメット１０は、前記図７に示す従来例と同様に、自動車のバックドア２に配策するワイヤハーネスＷ／Ｈの車体３への架け渡し側に外装している。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The grommet 10 for a wire harness shown in FIGS. 1 to 4 is externally provided on the side of the wire harness W / H routed to the back door 2 of the automobile to the vehicle body 3 as in the conventional example shown in FIG. is doing.

グロメット１０は、図７に示すように、バックドア２のインナーパネル２ｂとアウターパネル２ｃの間の挿通空間Ｃを貫通させ、車体３と対向する端面にインナーパネル２ｂに設けたドア側貫通穴２ａを通して車体３側へと引き出し、先端を車体側貫通穴に係止した後に、他端をドア側貫通穴２ａに係止するものである。   As shown in FIG. 7, the grommet 10 penetrates the insertion space C between the inner panel 2 b and the outer panel 2 c of the back door 2, and the door side through hole 2 a provided in the inner panel 2 b on the end surface facing the vehicle body 3. Through the vehicle body 3 side, the front end is locked to the vehicle body side through hole, and the other end is locked to the door side through hole 2a.

グロメット１０はゴムまたはエラストマーからなる弾性材料で一体的に成形している。グロメット１０は、図１に示すように、ドア側貫通穴（以下、貫通穴と略す）２ａに内嵌係止する大径筒部１１と、車体３の貫通穴の内周面に内嵌係止する大径筒部１２を長さ方向の両端に備えている。これら両端の大径筒部１１、１２に屈曲した小径筒部１３、１４が連続し、小径筒部１３と１４との間に山部１５ａと谷部１５ｂとを交互に設けた蛇腹筒部１５を連続して設けている。
前記バックドア２側の大径筒部１１に連続する前記屈曲した小径筒部１３は、大径筒部１１の軸線方向に対して９０度未満３０度以上の角度で屈曲している。同様に、車体３側の大径筒部１２に連続する小径筒部１４も屈曲させている。 The grommet 10 is integrally formed of an elastic material made of rubber or elastomer. As shown in FIG. 1, the grommet 10 includes a large-diameter cylindrical portion 11 that fits and locks in a door-side through hole (hereinafter, abbreviated as a through hole) 2 a, and an inner fitting engagement with the inner peripheral surface of the through hole of the vehicle body 3. Large diameter cylindrical portions 12 to be stopped are provided at both ends in the length direction. The bellows cylinder part 15 which the small diameter cylinder parts 13 and 14 bent to the large diameter cylinder parts 11 and 12 of these both ends continues, and the crest part 15a and the trough part 15b were alternately provided between the small diameter cylinder parts 13 and 14. Are provided continuously.
The bent small-diameter cylindrical portion 13 that is continuous with the large-diameter cylindrical portion 11 on the back door 2 side is bent at an angle of less than 90 degrees and 30 degrees or more with respect to the axial direction of the large-diameter cylindrical portion 11. Similarly, the small-diameter cylindrical portion 14 that is continuous with the large-diameter cylindrical portion 12 on the vehicle body 3 side is also bent.

前記バックドア２側の大径筒部１１は、環状係止溝２０を設けた円錐筒部２１と、該円錐筒部２１の縮径側に平坦な端面部２２を有し、該端面部２２に小径筒部１３の偏芯連続部２５の開口を設け、該偏芯連続部２５に屈曲部２４を連続し、小径筒部１３を偏芯連続部２５と屈曲部２４とから構成している。   The large-diameter cylindrical portion 11 on the back door 2 side has a conical cylindrical portion 21 provided with an annular locking groove 20 and a flat end surface portion 22 on the reduced diameter side of the conical cylindrical portion 21. Is provided with an opening of the eccentric continuous portion 25 of the small-diameter cylindrical portion 13, the bent portion 24 is continuous with the eccentric continuous portion 25, and the small-diameter cylindrical portion 13 includes the eccentric continuous portion 25 and the bent portion 24. .

図３に示すように、偏芯連続部２５の中心軸線Ｌ１は、大径筒部１１の中心軸線Ｌ２と２０°〜４５°の範囲で偏芯させ、本実施形態では３０°としている。
小径筒部１３の偏芯連続部２５を介して大径筒部１１の端面部２２と連続しているため、端面部２２には、偏芯連続部２５の反偏芯方向となる部分には距離が広がった広域部分２２ａが存在すると共に、偏芯側には偏芯連続部２５の外周面と近接した狭域部分２２ｂが存在する。 As shown in FIG. 3, the central axis L1 of the eccentric continuous portion 25 is eccentric from the central axis L2 of the large-diameter cylindrical portion 11 in the range of 20 ° to 45 °, and is set to 30 ° in this embodiment.
Since it is continuous with the end surface portion 22 of the large-diameter cylindrical portion 11 via the eccentric continuous portion 25 of the small-diameter cylindrical portion 13, the end surface portion 22 has a portion in the anti-eccentric direction of the eccentric continuous portion 25. There is a wide-area portion 22a with an increased distance, and there is a narrow-area portion 22b close to the outer peripheral surface of the eccentric continuous portion 25 on the eccentric side.

前記端面部２２の広域部分２２ａには、偏芯連続部２５の反偏芯方向の外周面から広域部分２２ａの外面にかけて三角形状の３本のリブ２６を放射状に突設している。
これら３本のリブ２６は、偏芯連続部２５の外面で１０°〜４０°の範囲から突設し、広域部分２２ａ側では２０°〜４０°の範囲に突出するように放射状としている。 かつ、これらのリブ２６は端面部２２に連続する円錐筒部２１の外周面に対して突出させることなく連続させた三角形状とし、リブ２６がドア側の貫通穴２ａに引っ掛らないようにしている。 Three triangular ribs 26 project radially from the outer peripheral surface of the eccentric continuous portion 25 in the anti-eccentric direction to the outer surface of the wide portion 22a on the wide portion 22a of the end surface portion 22.
These three ribs 26 project radially from the range of 10 ° to 40 ° on the outer surface of the eccentric continuous portion 25, and project radially into the range of 20 ° to 40 ° on the wide area portion 22a side. Further, these ribs 26 have a triangular shape that is continuous with the end surface portion 22 without protruding from the outer peripheral surface of the conical cylinder portion 21 so that the ribs 26 do not get caught in the through hole 2a on the door side. ing.

なお、前記リブ２６の３本に限定されず、１本あるいは２本の肉厚のリブでも良いが、３本に分散させた方がグロメット１０の柔軟性を保持して作業性を高めることができる。また、４本等の多数本としても良いが、その場合にはリブの厚さを薄くする必要があり、引っ張り力を伝達力が低下するため、本実施形態のように３本のリブが最も好適である。   The ribs 26 are not limited to three ribs, but may be one or two ribs. However, when the ribs 26 are dispersed in three ribs, the grommet 10 can be kept flexible and workability can be improved. it can. In addition, the number of ribs may be large, such as four. In that case, it is necessary to reduce the thickness of the rib, and the transmission force of the pulling force is reduced. Is preferred.

一方、車体３側の小径筒部１４の外周面には、バックドア２内の挿通空間Ｓの挿通時に、小径筒部１３の外周面が直接にアウターパネル２２の内面と接触するのを防止して、グロメット１０の挿通作業性をスムーズに行えるように、屈曲方向で外周側となる外面に、リブ２８を突設している。該リブ２８はグロメットの長さ方向Ｙに間隔をあけて長さ方向と直交する周方向Ｘに山型に突出している。即ち、これらの山型としたリブ２８は、図中、上面側となる半周部分に、周方向の両端から中心部に向けて傾斜し、最も突出する頂点部分２８ａを上面側の中央に位置させている。   On the other hand, the outer peripheral surface of the small diameter cylindrical portion 14 on the vehicle body 3 side prevents the outer peripheral surface of the small diameter cylindrical portion 13 from directly contacting the inner surface of the outer panel 22 when the insertion space S in the back door 2 is inserted. Thus, the ribs 28 project from the outer surface on the outer peripheral side in the bending direction so that the grommet 10 can be inserted smoothly. The ribs 28 protrude in a mountain shape in the circumferential direction X perpendicular to the length direction at intervals in the length direction Y of the grommet. That is, these ribs 28 having a mountain shape are inclined toward the central portion from both ends in the circumferential direction on the semicircular portion on the upper surface side in the drawing, and the most protruding vertex portion 28a is positioned at the center on the upper surface side. ing.

また、グロメット１０の車体３への取付側となる大径筒部１２には、図１に示すように、小径筒部１４と連続する内周部からワイヤハーネスＷ／Ｈを固定するためのテープ巻き舌片３０を突出し、かつ、大径筒部１２の拡径部１２ａ内に樹脂インナー３１を内嵌している。該樹脂インナー３１の折り返し部３１ａの先端に係止段部３１ｂを設け、車体３側の貫通穴４０の内周縁に係止段部３１ｂを係止して貫通穴４０に係止する構成としている。   Further, as shown in FIG. 1, a tape for fixing the wire harness W / H from the inner peripheral portion continuous with the small-diameter cylindrical portion 14 is attached to the large-diameter cylindrical portion 12 on the attachment side of the grommet 10 to the vehicle body 3. A resin inner 31 is fitted into the enlarged diameter portion 12a of the large diameter cylindrical portion 12 so as to project the wound tongue piece 30. A locking step portion 31 b is provided at the tip of the folded portion 31 a of the resin inner 31, and the locking step portion 31 b is locked to the inner peripheral edge of the through hole 40 on the vehicle body 3 side and locked to the through hole 40. .

前記形状からなるグロメット１０に、バックドア２に配索するワイヤハーネスＷ／Ｈを通し、グロメット１０の大径筒部１２より突出したワイヤハーネスＷ／Ｈをテープ巻き舌片３０にテープＴを巻き付けて、ワイヤハーネスＷ／Ｈとグロメット１０とを固定している。   The wire harness W / H routed in the back door 2 is passed through the grommet 10 having the above-described shape, and the wire harness W / H protruding from the large diameter cylindrical portion 12 of the grommet 10 is wound around the tape winding tongue 30 with the tape T. The wire harness W / H and the grommet 10 are fixed.

グロメット１０を取り付けたワイヤハーネスＷ／Ｈは、図４（Ａ）に示すように、バックドア２を最大限に開いて上方傾斜させた状態で、バックドア２のインナーパネル２ｂとアウターパネル２ｃの間の挿通空間を挿通している。このグロメット１０を車体と対向する貫通穴２ａを通して車体側へと引き出し、大径筒部１２を車体側の貫通穴に係止した後に、大径筒部１１の環状係止溝２０をバックドア２側の貫通穴２ａに係止している。   As shown in FIG. 4 (A), the wire harness W / H to which the grommet 10 is attached opens the back door 2 to the maximum and tilts upward so that the inner panel 2b and the outer panel 2c of the back door 2 The insertion space between them is inserted. The grommet 10 is pulled out to the vehicle body side through the through hole 2a facing the vehicle body, and the large diameter cylindrical portion 12 is locked in the through hole on the vehicle body side, and then the annular locking groove 20 of the large diameter cylindrical portion 11 is formed in the back door 2. It is locked in the through hole 2a on the side.

前記グロメット１０の取付作業時において、バックドア２の貫通穴２ａにグロメット１０の大径筒部１２、小径筒部１４、蛇腹筒部１５、小径筒部１３を挿通させた後、該小径筒部１３を下方に引っ張って、大径筒部１１の円錐筒部２１を貫通穴２ａに通し、該円錐筒部２１の開口端側の外周面に設けた環状係止溝２０を貫通穴２ａの周縁に内嵌係止している。   At the time of attaching the grommet 10, after inserting the large-diameter cylindrical portion 12, the small-diameter cylindrical portion 14, the bellows cylindrical portion 15 and the small-diameter cylindrical portion 13 of the grommet 10 into the through hole 2a of the back door 2, the small-diameter cylindrical portion is inserted. 13 is pulled downward, the conical tube portion 21 of the large-diameter tube portion 11 is passed through the through hole 2a, and the annular locking groove 20 provided on the outer peripheral surface on the open end side of the conical tube portion 21 is inserted into the peripheral edge of the through hole 2a. The inner fitting is locked.

図４（Ａ）（Ｂ）に示すように、前記環状係止溝２０を貫通穴２ａに内嵌係止する作業時、バックドア２は水平方向Ｓ１の自動車設置面に対して３０°の角度で傾斜し、該バックドア２の貫通穴２ａを設けたインナーパネル２ｂの水平面に対して傾斜方向Ｓ２となり、該傾斜角度αは３０°となっている。よって、貫通穴２ａに内嵌係止する環状係止溝２０は水平方向に対して３０°の傾斜角度で取り付けられることになる。   As shown in FIGS. 4 (A) and 4 (B), the back door 2 is at an angle of 30 ° with respect to the vehicle installation surface in the horizontal direction S1 when the annular locking groove 20 is fitted and locked into the through hole 2a. Is inclined with respect to the horizontal plane of the inner panel 2b provided with the through hole 2a of the back door 2, and the inclination angle α is 30 °. Therefore, the annular locking groove 20 fitted and locked in the through hole 2a is attached at an inclination angle of 30 ° with respect to the horizontal direction.

大径筒部１１の環状係止溝２０を貫通穴２ａに嵌合係止するため、大径筒部１１と連続した小径筒部１３の根元部分である偏芯連続部２５を作業者は手で把持して下向きに引っ張っている。其の際、偏芯連続部２５の中心軸線Ｌ２は大径筒部１１の中心軸線Ｌ１に対して３０°傾斜させているため、該偏芯連続部２５は水平面Ｓ１に対して直角方向となる。
よって、下向きに突出する偏芯連続部２５を垂直方向下向きに作業者が引っ張ると、大径筒部１１の中心軸線Ｌ１は傾斜した貫通穴２ａに対して直交方向に引っ張られることになる。その結果、傾きながら引っ張れる場合に発生する貫通穴２ａと環状係止溝２０との位置ずれは発生せず、環状係止溝２０の一部が貫通穴２ａと係止し、他の部分が係止しない不具合の発生を防止できる。 In order to fit and lock the annular locking groove 20 of the large-diameter cylindrical portion 11 in the through hole 2a, the operator manually operates the eccentric continuous portion 25 that is the base portion of the small-diameter cylindrical portion 13 that is continuous with the large-diameter cylindrical portion 11. Grip with and pull downward. At that time, since the central axis L2 of the eccentric continuous portion 25 is inclined by 30 ° with respect to the central axis L1 of the large diameter cylindrical portion 11, the eccentric continuous portion 25 is perpendicular to the horizontal plane S1. .
Therefore, when the operator pulls the eccentric continuous portion 25 projecting downward in the vertical direction downward, the central axis L1 of the large-diameter cylindrical portion 11 is pulled in a direction orthogonal to the inclined through hole 2a. As a result, the positional displacement between the through hole 2a and the annular locking groove 20 that occurs when pulling while tilting does not occur, a part of the annular locking groove 20 is locked with the through hole 2a, and the other part is engaged. It is possible to prevent the occurrence of problems that do not stop.

かつ、小径筒部１１の偏芯連続部２５を下方に引っ張る力は、リブ２６を介して反偏芯側となる大径筒部１１の周縁にも直接的に伝達できるため、環状係止溝２０を設けた円錐筒部２１の全周に略均等に引っ張る力を負荷できる。よって、偏芯連続部２５から離れた側の環状係止溝２０を、偏芯連続部２５と近接した側の環状係止溝２０と同様に貫通穴２ａに正確に嵌合係止することができる。   And since the force pulling the eccentric continuous part 25 of the small diameter cylindrical part 11 downward can be directly transmitted to the peripheral edge of the large diameter cylindrical part 11 on the anti-eccentric side via the rib 26, the annular locking groove The force which pulls substantially uniformly can be loaded to the perimeter of the conical cylinder part 21 in which 20 is provided. Therefore, the annular locking groove 20 on the side away from the eccentric continuous portion 25 can be accurately fitted and locked in the through hole 2a in the same manner as the annular locking groove 20 on the side close to the eccentric continuous portion 25. it can.

このように、グロメット１０の環状係止溝２０を貫通穴２ａに挿入係止するための下方からの引っ張りを垂直方向下向きとしているため、作業者は環状係止溝２０の中心軸線を傾斜した貫通穴２ａに一致させるために把持した小径筒部をひねりながら引っ張る必要は無くなる。作業者は、このグロメットの係止作業を流れ作業的に連続して行っているため、真っすぐに引っ張るだけで良くなり、作業者の負担を低減することができる。   Thus, since the downward pulling for inserting and locking the annular locking groove 20 of the grommet 10 into the through hole 2a is directed downward in the vertical direction, the operator penetrates the central axis of the annular locking groove 20 with an inclination. There is no need to twist while pulling the small-diameter cylindrical portion gripped to match the hole 2a. Since the worker performs the grommet locking operation continuously in a flow manner, it is only necessary to pull the grommet straight, and the burden on the operator can be reduced.

本発明は前記実施形態に限定されず、例えば、バックドアの貫通穴にグロメットを挿通係止する場合に限らず、図５に示すように、貫通穴５０を設けたパネル５１が傾斜していた場合にも好適に用いられる。即ち、パネル５１の傾斜角度に対応させて、小径筒部１３に設ける偏芯連続部２５を介して大径筒部１１に連続させることで、該偏芯連続部２０を垂直方向下方へ引っ張ることで、大径筒部１１の外周面に設けた環状係止溝２０を貫通穴５０に内嵌係止することができる。   The present invention is not limited to the above-described embodiment. For example, the present invention is not limited to the case where the grommet is inserted and locked in the through hole of the back door, and the panel 51 provided with the through hole 50 is inclined as shown in FIG. Also suitable for use in some cases. That is, the eccentric continuous portion 20 is pulled downward in the vertical direction by being connected to the large diameter cylindrical portion 11 via the eccentric continuous portion 25 provided in the small diameter cylindrical portion 13 corresponding to the inclination angle of the panel 51. Thus, the annular locking groove 20 provided on the outer peripheral surface of the large-diameter cylindrical portion 11 can be fitted and locked into the through hole 50.

本発明の実施形態のグロメットを示し、（Ａ）は斜視図、（Ｂ）は側面図である。The grommet of embodiment of this invention is shown, (A) is a perspective view, (B) is a side view. （Ａ）は前記グロメットの平面図、（Ｂ）は左側面図である。(A) is a top view of the said grommet, (B) is a left view. 前記グロメットの要部断面図である。It is principal part sectional drawing of the said grommet. （Ａ）（Ｂ）はバックドアの貫通穴にグロメットの環状係止溝を係止する作業状態を示す説明図である。(A) (B) is explanatory drawing which shows the operation state which latches the cyclic | annular latching groove | channel of a grommet in the through-hole of a back door. 変形例を示す概略図である。It is the schematic which shows a modification. 従来例を示し、（Ａ）はバックドアと車体との間にグロメットを取り付けた状態の斜視図、（Ｂ）はグロメットの平面図である。A prior art example is shown, (A) is a perspective view of the state which attached the grommet between the back door and the vehicle body, (B) is a top view of the grommet. （Ａ）はグロメット取付時のバックドアを示す図面、（Ｂ）はバックドアにグロメットを取り付けている状態を示す図面である。(A) is drawing which shows the back door at the time of grommet attachment, (B) is drawing which shows the state which has attached the grommet to the back door. 問題点を示す図面である。It is drawing which shows a problem.

符号の説明Explanation of symbols

２ バックドア
２ａ 貫通穴
２ｂ インナーパネル
３ 車体
１０ グロメット
１１、１２ 大径筒部
１３、１４ 屈曲した小径筒部
２０ 環状係止溝
２１ 円錐筒部
２２ 端面部
２５ 偏芯連続部
２６ リブ
Ｗ／Ｈ ワイヤハーネス 2 Back door 2a Through hole 2b Inner panel 3 Car body 10 Grommet 11, 12 Large diameter cylindrical portion 13, 14 Bent small diameter cylindrical portion 20 Annular locking groove 21 Conical cylindrical portion 22 End surface portion 25 Eccentric continuous portion 26 Rib W / H Wire harness

Claims (4)

自動車に配索するワイヤハーネスに外装し、外周面に環状係止溝を設けた大径筒部と、該大径筒部に連続した小径筒部を備え、前記小径筒部を引っ張って前記環状係止溝をパネルの貫通穴に係止するゴムまたはエラストマーからなるグロメットであって、
前記小径筒部は、前記大径筒部に偏芯して連続する偏芯連続部を備え、
前記偏芯連続部を、前記パネルへの取付時に傾斜方向となる該パネルに対して垂直下方へ突出させていることを特徴とするグロメット。 A large-diameter cylindrical portion that is externally mounted on a wire harness that is routed to an automobile and has an annular locking groove on the outer peripheral surface, and a small-diameter cylindrical portion that is continuous with the large-diameter cylindrical portion, and pulls the small-diameter cylindrical portion to A grommet made of rubber or elastomer that locks the locking groove into the through hole of the panel,
The small-diameter cylindrical portion includes an eccentric continuous portion that is eccentric and continuous with the large-diameter cylindrical portion,
The grommet characterized in that the eccentric continuous portion protrudes vertically downward with respect to the panel which is in the inclined direction when attached to the panel. 前記小径筒部の偏芯連続部では、偏芯方向と反対側の外面から前記環状係止溝側にかけて、リブを突設している請求項１に記載のグロメット。   The grommet according to claim 1, wherein a rib is protruded from the outer surface opposite to the eccentric direction to the annular locking groove side in the eccentric continuous portion of the small diameter cylindrical portion. 前記大径筒部は前記環状係止溝を設けた円錐筒部と、該円錐筒部の縮径側に平坦な端面部を有する形状であり、該端面部に前記小径筒部の偏芯連続部の開口を設け、該端面部の外周と偏芯連続部の外周面との間に距離が広がる反偏芯方向となる部分に、該偏芯連続部の外周面から端面部の外周にかけて、複数本のリブを周方向に間隔をあけて放射状に突設している請求項２に記載のグロメット。   The large-diameter cylindrical portion has a shape having a conical cylindrical portion provided with the annular locking groove and a flat end surface portion on the reduced diameter side of the conical cylindrical portion, and the small-diameter cylindrical portion is continuously eccentric to the end surface portion. An opening of the part is provided, and in a portion that becomes an anti-eccentric direction in which the distance increases between the outer periphery of the end surface part and the outer peripheral surface of the eccentric continuous part, from the outer peripheral surface of the eccentric continuous part to the outer periphery of the end surface part, The grommet according to claim 2, wherein a plurality of ribs are radially provided at intervals in the circumferential direction. 自動車のバックドアに配策するワイヤハーネスの車体への架け渡し側に外装し、バックドアのパネル間の空間を貫通させてドア側の貫通穴を通して車体側へと引き出し、先端を車体側貫通穴に係止すると共に他端をドア貫通穴に係止するバックドア用のグロメットであり、
一端側に前記ドア貫通穴に係止する前記大径筒部を備えると共に、他端側に前記車体側貫通穴に係止する大径筒部を備え、これら両端の大径筒部に屈曲した小径筒部が連続し、これら小径筒部の間に山部と谷部とを交互に設けた蛇腹筒部を連続して備え、
前記ドア貫通穴に係止する前記大径筒部と偏芯連続部を介して連続する前記小径筒部は屈曲して前記蛇腹筒部に連続している請求項１乃至請求項３のいずれか１項に記載のグロメット。 The wire harness routed to the back door of the automobile is sheathed on the side of the vehicle that extends to the vehicle body, penetrates the space between the panels of the back door, pulls out to the vehicle side through the through hole on the door side, and the tip is on the through hole on the vehicle side Is a grommet for the back door that locks the other end in the door through hole,
The one end side is provided with the large-diameter cylindrical portion that engages with the door through-hole, and the other end side is provided with a large-diameter cylindrical portion that engages with the vehicle body-side through-hole, and is bent into the large-diameter cylindrical portions at both ends. A small-diameter cylindrical part is continuously provided, and a bellows cylindrical part in which peaks and valleys are alternately provided between these small-diameter cylindrical parts is continuously provided.
The said large diameter cylinder part latched by the said door through-hole and the said small diameter cylinder part which continues via an eccentric continuation part are bent, and are following the said bellows cylinder part. The grommet according to item 1.
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Cited By (5)

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Publication number Priority date Publication date Assignee Title
WO2011122091A1 (en) * 2010-03-29 2011-10-06 住友電装株式会社 Grommet
JP2015188295A (en) * 2014-03-27 2015-10-29 矢崎総業株式会社 grommet and wire harness
JP2016054587A (en) * 2014-09-03 2016-04-14 住友電装株式会社 Grommet
JP2019180117A (en) * 2018-03-30 2019-10-17 古河電気工業株式会社 Grommet and wire harness with grommet
WO2024083818A1 (en) * 2022-10-19 2024-04-25 Brose Fahrzeugteile Se & Co. Kommanditgesellschaft, Bamberg Cable sleeve for a drive for moving a closure element of a motor vehicle

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JP2000182455A (en) * 1998-12-15 2000-06-30 Kansei Corp Grommet
JP2001097143A (en) * 1999-09-30 2001-04-10 Sumitomo Wiring Syst Ltd Routing structure of wire harness between car body and door
JP2008092644A (en) * 2006-09-29 2008-04-17 Sumitomo Wiring Syst Ltd Grommet

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JP2000182455A (en) * 1998-12-15 2000-06-30 Kansei Corp Grommet
JP2001097143A (en) * 1999-09-30 2001-04-10 Sumitomo Wiring Syst Ltd Routing structure of wire harness between car body and door
JP2008092644A (en) * 2006-09-29 2008-04-17 Sumitomo Wiring Syst Ltd Grommet

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011122091A1 (en) * 2010-03-29 2011-10-06 住友電装株式会社 Grommet
JP2011211809A (en) * 2010-03-29 2011-10-20 Sumitomo Wiring Syst Ltd Grommet
CN103004043A (en) * 2010-03-29 2013-03-27 住友电装株式会社 Grommet
JP2015188295A (en) * 2014-03-27 2015-10-29 矢崎総業株式会社 grommet and wire harness
US9896042B2 (en) 2014-03-27 2018-02-20 Yazaki Corporation Grommet and wire harness
JP2016054587A (en) * 2014-09-03 2016-04-14 住友電装株式会社 Grommet
JP2019180117A (en) * 2018-03-30 2019-10-17 古河電気工業株式会社 Grommet and wire harness with grommet
WO2024083818A1 (en) * 2022-10-19 2024-04-25 Brose Fahrzeugteile Se & Co. Kommanditgesellschaft, Bamberg Cable sleeve for a drive for moving a closure element of a motor vehicle

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