JP5664434B2 - Wiring grommet mounting structure - Google Patents

Wiring grommet mounting structure Download PDF

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JP5664434B2
JP5664434B2 JP2011097371A JP2011097371A JP5664434B2 JP 5664434 B2 JP5664434 B2 JP 5664434B2 JP 2011097371 A JP2011097371 A JP 2011097371A JP 2011097371 A JP2011097371 A JP 2011097371A JP 5664434 B2 JP5664434 B2 JP 5664434B2
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grommet
small
cylindrical portion
diameter cylindrical
wire harness
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鈴木　隆史
隆史 鈴木
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Sumitomo Wiring Systems Ltd
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Description

本発明は車両に配索するワイヤハーネスのグロメット取付構造に関し、詳しくは、車体パネルの貫通穴を貫通する部位のワイヤハーネスにグロメットを外嵌すると共に、該グロメット内のワイヤハーネスの電線群中に止水剤を充填硬化するワイヤハーネスのグロメット取付構造において、車体パネルの貫通穴を貫通した直後にワイヤハーネスを屈曲して配索するものである。   The present invention relates to a grommet mounting structure for a wire harness that is routed to a vehicle. Specifically, the grommet is externally fitted to a wire harness that passes through a through-hole of a vehicle body panel, and the wire harness in the wire harness in the grommet In a grommet mounting structure for a wire harness that is filled and cured with a water-stopping agent, the wire harness is bent and routed immediately after passing through a through hole of a vehicle body panel.

自動車のエンジンルーム等の被水領域から車室内へと配索するワイヤハーネスは、エンジンルームと車室とを仕切る車体パネルの貫通穴にワイヤハーネスに外嵌したグロメットを装着して貫通し、該グロメットで車室の防水、防音、防塵を図っている。また、図５（Ａ）に示すように、グロメット１００を貫通するワイヤハーネス１１０の電線群中にシリコーン等の止水剤１２０を充填し、電線間の隙間、電線とグロメット内周面の隙間を止水剤で閉塞して防水性能を高めている。詳細には、止水剤１２０はグロメット１００の小径の電線挿通筒部１０１の電線群中に充填され、該充填部から硬化前に止水剤１２０が流動することで、大径の車体係止筒部１０２側及び小径の電線挿通筒部１０１の外部の電線群中へ止水剤１２０が充填され、その後、硬化される。該止水剤の硬化領域は曲げ禁止領域となる。   A wire harness routed from a wet area such as an engine room of an automobile to a vehicle interior is penetrated by attaching a grommet fitted to the wire harness to a through hole of a vehicle body panel that partitions the engine room and the vehicle interior. Grommets are designed to protect the cabin from water, sound and dust. Moreover, as shown in FIG. 5 (A), the wire harness 110 that penetrates the grommet 100 is filled with a water-stopping agent 120 such as silicone, and gaps between the wires and between the wires and the inner peripheral surface of the grommet are formed. Sealed with a water-stopper to improve waterproof performance. In detail, the water-stopping agent 120 is filled in the electric wire group of the small-diameter wire insertion tube portion 101 of the grommet 100, and the water-stopping agent 120 flows from the filling portion before hardening, thereby locking the large-diameter vehicle body. The waterproofing agent 120 is filled into the electric wire group outside the cylindrical portion 102 side and the small diameter electric wire insertion cylindrical portion 101, and then cured. The hardening area of the water-stopping agent is a bending-inhibited area.

前記グロメット内の電線群中に止水剤を充填する方法として、グロメットにワイヤハーネスを貫通した後にグロメットに止水剤を充填する方法と、ワイヤハーネスの電線群中に止水剤を充填した状態でグロメットにワイヤハーネスを通す方法（所謂、線間止水）とがある。いずれの場合も、止水剤は流動状態で電線群中に注入し、注入した後に止水剤は硬化する。   As a method for filling the grommet with the water-stopping agent in the electric wire group, a method for filling the grommet with the water-stopping agent after passing through the wire harness, and a state in which the electric wire group of the wire harness is filled with the water-stopping agent Then, there is a method of passing the wire harness through the grommet (so-called line stop water). In any case, the water-stopping agent is injected into the electric wire group in a fluid state, and the water-stopping agent is cured after the injection.

一方、図５（Ｂ）に示すように、車体パネルＰの貫通穴Ｈを貫通した直後でワイヤハーネスを屈曲して配索する場合が多い。その場合、グロメットの貫通穴に係止する車体係止筒部１０２に連続する小径の電線挿通筒部１０１が直線状で、該電線挿通筒部の内部で止水剤が硬化していると、ワイヤハーネスを急激曲げできない問題がある。即ち、図５（Ｂ）で点線で示す屈曲が理想経路であるが、製造可能な経路は実線で示す大きく湾曲した経路となる。このように、ワイヤハーネスが大きく湾曲すると、外部干渉材と接触する恐れがある。   On the other hand, as shown in FIG. 5B, the wire harness is often bent and routed immediately after passing through the through hole H of the vehicle body panel P. In that case, when the small diameter electric wire insertion cylinder portion 101 continuous with the vehicle body engagement cylinder portion 102 to be engaged with the through hole of the grommet is linear, and the water stop agent is cured inside the electric wire insertion cylinder portion, There is a problem that the wire harness cannot be bent rapidly. That is, the bend indicated by the dotted line in FIG. 5B is an ideal path, but the path that can be manufactured is a greatly curved path indicated by the solid line. As described above, when the wire harness is largely curved, there is a risk of contact with the external interference material.

前記車体パネルの貫通穴を貫通後のワイヤハーネスを９０度等のＬ字曲げする場合、本出願人は特開平７−２１１１７１号公報（特許文献１）に図６に示すグロメット２００にＬ字状に屈曲した配線保持部材２１０を連結する構成を提案している。該配線保持部材２１０をグロメット２００に連結して、グロメット２００から引き出されたワイヤハーネス１１０を配線保持部材２１０に通すと急激曲げすることはできる。   In the case of bending an L-shaped wire harness after passing through the through hole of the vehicle body panel at 90 degrees or the like, the present applicant has disclosed an L-shaped grommet 200 shown in FIG. 6 in Japanese Patent Laid-Open No. 7-2111171 (Patent Document 1). The structure which connects the wiring holding member 210 bent in the direction is proposed. When the wiring holding member 210 is connected to the grommet 200 and the wire harness 110 pulled out from the grommet 200 is passed through the wiring holding member 210, it can be bent rapidly.

特開平７−２１１１７１号公報Japanese Patent Laid-Open No. 7-2111171

しかしながら、前記図６に示す特許文献１では、グロメット２００から引き出すワイヤハーネスを直角曲げしているだけで、止水剤をグロメット２００を挿通するワイヤハーネスに充填して硬化させているものではない。よって、グロメットの止水剤を充填硬化させている筒部から引き出したワイヤハーネスを急激曲げする場合には適用することができない。
また、配線保持部材２１０を設ける場合、グロメットから引き出されるワイヤハーネスの曲げ開始位置、曲げ角度を車種毎に対応させて成形する必要があり、成形金型の製作費がかかり製造コストが大幅に高くなり、かつ、形状によっては技術的に成形できない場合もある。 However, in patent document 1 shown in the said FIG. 6, the wire harness pulled out from the grommet 200 is bent at right angles, and the water harness is not filled and hardened in the wire harness which penetrates the grommet 200. Therefore, it cannot be applied to the case where the wire harness drawn out from the cylindrical portion filled and cured with the grommet water-stopper is bent rapidly.
In addition, when the wiring holding member 210 is provided, it is necessary to form the wire harness drawn from the grommet in accordance with the bending start position and bending angle for each vehicle type, which increases the manufacturing cost of the molding die and significantly increases the manufacturing cost. And depending on the shape, it may not be technically molded.

本発明は前記問題に鑑みてなされたもので、グロメット中の電線群に止水剤を充填硬化した防水グロメットにおいて、該防水グロメットの電線を密着して挿通する小径筒部を屈曲させずに、車体パネルへの係止部と同一軸線上に設けたグロメットとしながら、車体パネルの通過直後に急激曲げができるようにすることを課題としている。 The present invention has been made in view of the above problems, and in a waterproof grommet in which a wire group in the grommet is filled and cured with a water-stopping agent, without bending the small-diameter cylindrical portion that closely contacts and inserts the electric wire of the waterproof grommet, It is an object of the present invention to enable rapid bending immediately after passing the vehicle body panel while using a grommet provided on the same axis as the locking portion to the vehicle body panel.

前記課題を解決するため、本発明は、車体パネルの貫通穴を貫通する部位のワイヤハーネスにグロメットが外嵌され、前記貫通穴を貫通直後のワイヤハーネスが前記グロメットの小径筒部と共に屈曲されて配索されるものであり、
前記グロメットは前記車体パネルの貫通穴の周縁に係止する車体係止部が設けられた大径筒部に前記ワイヤハーネスを密嵌して挿通する小径筒部が同一軸線上に連続して設けられており、
前記小径筒部内を貫通するワイヤハーネスの電線群中に止水剤が充填されると共に、該止水剤中に前記ワイヤハーネスの屈曲と対応した屈曲形状を有する樹脂棒が貫通され、該樹脂棒により前記小径筒部が曲げられると共に該屈曲される小径筒部内で前記止水剤が硬化されて屈曲された線間止水部が設けられ、
前記屈曲された線間止水部が設けられた領域では、前記小径筒部内で前記線間止水部の外周に粘着テープが巻き付けられ、または前記小径筒部の外周に前記屈曲された線間止水部に沿わせて粘着テープが巻き付けられていることを特徴とするワイヤハーネスのグロメット取付構造を提供している。 To solve the above problems, the present invention is a grommet is fitted in a portion of the wire harness passing through the through hole of the vehicle body panel, wherein immediately after penetrating the through hole wire harness is bending music with the small-diameter tubular portion of the grommet Are arranged,
The grommet is continuously provided on the same axis with a small-diameter cylindrical portion through which the wire harness is closely fitted and inserted into a large-diameter cylindrical portion provided with a vehicle body locking portion that is locked to the periphery of the through hole of the vehicle body panel. And
A resin rod having a bent shape corresponding to the bending of the wire harness is penetrated into the water stopping agent, and a wire rod of the wire harness penetrating the inside of the small-diameter cylindrical portion is filled. The small-diameter cylindrical portion is bent by the above-mentioned, and the water-stopping agent is cured and bent in the small-diameter cylindrical portion to be bent .
In the region where the bent line water-stop portion is provided, an adhesive tape is wound around the outer periphery of the line water-stop portion within the small-diameter cylindrical portion, or between the bent lines on the outer periphery of the small-diameter tube portion It provides a grommet mounting structure of a wire harness, wherein the adhesive tape along a waterproof part is et winding.

グロメットはゴムまたはエラストマーから成形した１体物のグロメット、車体係止部を設けた樹脂インナーをゴムまたはエラストマーで成形したグロメット本体に組みつけた２体物のグロメットのいずれでもよく、前記止水剤および樹脂棒が充填される前記小径筒部は前記ゴムまたはエラストマーからなる弾性材から形成されている。よって、グロメットの小径筒部は直線状に成形しているが、該小径筒部内に止水剤と共に貫通させる屈曲形状の樹脂棒に沿う形状に屈曲させることができる。   The grommet may be either a one-piece grommet molded from rubber or elastomer, or a two-piece grommet in which a resin inner provided with a vehicle body locking portion is assembled to a grommet body molded from rubber or elastomer. The small-diameter cylindrical portion filled with the resin rod is formed of an elastic material made of the rubber or elastomer. Therefore, although the small-diameter cylindrical portion of the grommet is linearly formed, it can be bent into a shape along a bent resin rod that penetrates the small-diameter cylindrical portion together with the water-stopping agent.

前記のように、ワイヤハーネスの曲げ形状に応じた樹脂棒を予め成形しておき、該樹脂棒を止水剤と共に電線群中に配置することで、硬化する止水剤および該止水剤が充填された電線群を所要形状に屈曲させることができる。よって、グロメット自体の小径筒部を屈曲して設ける必要はなく、該小径筒部内に充填する止水剤および電線群を屈曲させることにより、弾性を有する小径筒部を屈曲させることができる。かつ、樹脂棒の形状により、車体パネルの貫通穴から出た直後からグロメットの小径筒部を急激曲げすることが可能になり、ワイヤハーネスを最適経路で配索することができる。   As described above, a resin rod corresponding to the bending shape of the wire harness is formed in advance, and the resin rod is placed in the electric wire group together with the water-stopping agent, so that the water-stopping agent and the water-stopping agent are cured. The filled wire group can be bent into a required shape. Therefore, it is not necessary to bend the small-diameter cylindrical portion of the grommet itself, and the small-diameter cylindrical portion having elasticity can be bent by bending the water stopping agent and the electric wire group filled in the small-diameter cylindrical portion. In addition, the shape of the resin rod makes it possible to rapidly bend the small-diameter cylindrical portion of the grommet immediately after coming out of the through hole of the vehicle body panel, and the wire harness can be routed through the optimum route.

前記グロメット構造とする第１の方法として、前記グロメットに挿通する前の電線群に止水剤を充填すると共に、該止水剤の充填領域の電線群中に前記樹脂棒を貫通させ、硬化前の止水剤を電線群と共に前記樹脂棒に沿わせて屈曲させた後に粘着テープを巻き付けて屈曲形状を保持し、該屈曲形状に前記止水剤を硬化させた線間止水部を設けた後に前記グロメットに挿通し、該グロメットの直線状の小径筒部に前記屈曲した線間止水部を貫通させて前記小径筒部を屈曲させるワイヤハーネスのグロメット取付構造の形成方法を提供している。
また、第２の方法として、前記グロメットにワイヤハーネスの電線群を挿通した後に、該グロメットの前記大径筒部を上向きとして、前記止水剤を上方から注入して前記小径筒部に充填すると共に前記樹脂棒を挿入して前記小径筒部を屈曲させ、該樹脂棒の位置する前記小径筒部の外周から前記粘着テープを該小径筒部から引き出されるワイヤハーネスの外周にかけて巻き付け、該ワイヤハーネスおよび小径筒部を前記樹脂棒に沿わせて屈曲させると共に前記止水剤を硬化させているワイヤハーネスのグロメット取付構造の形成方法を提供している。 As a first method of making the grommet structure , the electric wire group before being inserted into the grommet is filled with a water-stopping agent, and the resin rod is passed through the electric wire group in the filling region of the water-stopping agent before being cured. After the water stop agent was bent along the resin rod together with the electric wire group, an adhesive tape was wound around to hold the bent shape, and a line water stop portion was provided in which the water stop agent was cured in the bent shape. There is provided a method for forming a grommet mounting structure for a wire harness that is inserted into the grommet later and passes through the bent water-stopping portion through a linear small-diameter cylindrical portion of the grommet to bend the small-diameter cylindrical portion. .
Further, as a second method, after the wire group of the wire harness is inserted into the grommet, the large diameter cylindrical portion of the grommet is directed upward, and the water stop agent is injected from above to fill the small diameter cylindrical portion. The resin rod is inserted to bend the small-diameter cylindrical portion, and the adhesive tape is wound around the wire harness drawn from the small-diameter cylindrical portion from the outer periphery of the small-diameter cylindrical portion where the resin rod is located. And a method of forming a grommet mounting structure for a wire harness in which a small-diameter cylindrical portion is bent along the resin rod and the water-stopping agent is cured.

前記した第１の方法のように、グロメットにワイヤハーネスを挿通前にワイヤハーネスに線間止水部を屈曲して設け、該屈曲した線間止水部を設けたワイヤハーネスをグロメットに挿通することで、グロメットの直線状の小径筒部をワイヤハーネスの配索形態に応じた曲げ開始位置、曲げ角度で屈曲させることができる。 As in the first method described above, the line harness is bent and provided in the wire harness before the wire harness is inserted into the grommet, and the wire harness provided with the bent line seal is inserted into the grommet. Thus, the linear small-diameter cylindrical portion of the grommet can be bent at a bending start position and a bending angle according to the wiring form of the wire harness.

また、前記ワイヤハーネスに屈曲した線間止水部を形成した後にグロメットに挿通する第１の方法にかえて、前記第２の方法のように、グロメットにワイヤハーネスを挿通し、その後、グロメットに止水剤を充填すると共に該止水剤が硬化する前に前記樹脂棒を前記小径筒部中に挿入し、該小径筒部を樹脂棒により屈曲させてもよい。 In addition, instead of the first method of inserting the grommet after forming a bent line water-stopping portion in the wire harness, the wire harness is inserted into the grommet as in the second method , and then the grommet is inserted. The resin rod may be inserted into the small-diameter cylindrical portion before filling the water-stopping agent and before the water-stopping agent is cured, and the small-diameter cylindrical portion may be bent by the resin rod.

前記のように、本発明では、車体パネルの貫通穴から直線状に突出するグロメットの小径筒部に屈曲した樹脂棒を通し、該樹脂棒に沿わせて硬化前の止水剤を充填した電線群を屈曲させることで、簡単に止水剤が電線群と共に屈曲硬化した小径筒部を設けることができる。該樹脂棒の屈曲形状及び樹脂棒の配置位置を調整することで、コストを掛けずに、車体パネルの貫通穴から引き出されるグロメットの小径筒部を最適な形状に屈曲することができる。   As described above, in the present invention, an electric wire in which a bent resin rod is passed through a small-diameter cylindrical portion of a grommet protruding linearly from a through hole of a vehicle body panel and filled with a water-stopping agent before curing along the resin rod. By bending the group, it is possible to easily provide a small-diameter cylindrical portion in which the water-stopping agent is bent and cured together with the electric wire group. By adjusting the bent shape of the resin rod and the arrangement position of the resin rod, the small-diameter cylindrical portion of the grommet drawn from the through hole of the vehicle body panel can be bent to an optimum shape without cost.

本発明の第１実施形態の断面図である。It is sectional drawing of 1st Embodiment of this invention. 図１の要部拡大図である。It is a principal part enlarged view of FIG. （Ａ）（Ｂ）（Ｃ）（Ｄ）は実施形態の形成工程を示す図面である。(A) (B) (C) (D) is drawing which shows the formation process of embodiment. 第２実施形態の断面図である。It is sectional drawing of 2nd Embodiment. （Ａ）（Ｂ）は従来例を示す図面である。(A) (B) is drawing which shows a prior art example. 他の従来例を示す図面である。It is drawing which shows another prior art example.

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に第１実施形態を示す。該第１実施形態は図３に示すように、グロメット１にワイヤハーネス２を挿通する前に、該ワイヤハーネス２のグロメット取付位置２ｘに屈曲した線間止水部５を設けている。該線間止水部５はワイヤハーネス２の電線群２Ｗ中にシリコーン樹脂からなる止水剤６が充填されていると共に、予め所要形状に屈曲させた樹脂棒８が充填され、該樹脂棒８の屈曲に沿って線間止水部５が屈曲されている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show a first embodiment. In the first embodiment, as shown in FIG. 3, before the wire harness 2 is inserted into the grommet 1, a line water stop portion 5 that is bent at the grommet mounting position 2 x of the wire harness 2 is provided. The inter-line water-stopping portion 5 is filled with a water-stopping agent 6 made of silicone resin in the wire group 2W of the wire harness 2, and is filled with a resin rod 8 bent in advance into a required shape. The line water stop part 5 is bent along the bend.

図１に示すように、グロメット１はエラストマーで成形した一体物のグロメットであり、大径筒部１０の外周に環状の車体係止凹部１１があり、該大径筒部１０の一端にワイヤハーネス２の電線群２Ｗに密嵌する小径筒部１２が同一軸線に沿って直線状に延長している。前記小径筒部１２内および該小径筒部先端１２ａから外方へ突出して屈曲した領域に線間止水部５を設けている。即ち、直線状に成形された小径筒部１２を屈曲させると共に該小径筒部先端１２ａから急激曲げした線間止水部５を設けている。これにより、車体パネルＰの貫通穴Ｈに装着したグロメット１から車室内に突出した小径筒部１２は略９０度に直角曲げされている。   As shown in FIG. 1, the grommet 1 is an integral grommet formed of elastomer, and has an annular vehicle body locking recess 11 on the outer periphery of the large-diameter cylindrical portion 10, and a wire harness at one end of the large-diameter cylindrical portion 10. The small-diameter cylindrical portion 12 tightly fitted to the second electric wire group 2W extends linearly along the same axis. An interline water-stop portion 5 is provided in the small-diameter cylindrical portion 12 and in regions bent outwardly from the small-diameter cylindrical portion distal end 12a. That is, the linear water-stop part 5 which bent the linear pipe | tube-shaped small diameter cylinder part 12 and abruptly bent from this small diameter cylinder part front-end | tip 12a is provided. Thereby, the small diameter cylinder part 12 which protruded into the vehicle interior from the grommet 1 with which the through-hole H of the vehicle body panel P was mounted | worn is bent at right angles to about 90 degree | times.

前記ワイヤハーネス２にグロメット１を取り付ける工程について説明する。
まず、図３（Ａ）に示すように、ワイヤハーネス２の電線群２Ｗをワイヤハーネス組立図板１４上に立設した布線治具１５Ａ、１５Ｂで保持して布線し、前記グロメット１の小径筒部１２を挿通する線間止水部とする位置２ｘの電線群２Ｗを保持する。かつ、予め屈曲させた樹脂棒８を電線群２Ｗ中に挿入する
ついで、図３（Ｂ）に示すように、布線治具１５Ｂより電線群２Ｗを取り外し、樹脂棒８を電線群２Ｗの中心に位置させると共に、樹脂棒８に沿わせて電線群２Ｗを屈曲させ、該屈曲状態で溶融した止水剤６を塗布する。
図３（Ｃ）に示すように、止水剤６の塗布後に防水樹脂シート１３を屈曲部に巻き付け、その後、外部から電線群２Ｗを揉んで止水剤６を電線群中に隙間なく行き渡らせる。
ついで、図３（Ｄ）に示すように、樹脂棒８の長さ方向の全長に沿って粘着テープ１４をハーフラップ巻きする。これにより、樹脂棒８の屈曲形状に沿って電線群２Ｗ中に充填した止水剤６を屈曲形状に硬化させる。
なお、前記図３（Ｃ）を省略して、（Ｄ）に示すテープ巻きでもよいが、電線群は直線方向の剛性を備えるため、シート１３と粘着テープ１４の両方で電線群２Ｗと止水剤６とを屈曲させることが好ましい。 The process of attaching the grommet 1 to the wire harness 2 will be described.
First, as shown in FIG. 3 (A), the wire group 2W of the wire harness 2 is held by the wiring jigs 15A and 15B erected on the wire harness assembly drawing board 14 and wired, and the grommet 1 The electric wire group 2W of the position 2x used as the line water stop part which penetrates the small diameter cylinder part 12 is hold | maintained. Then, the previously bent resin rod 8 is inserted into the wire group 2W. Next, as shown in FIG. 3 (B), the wire group 2W is removed from the wiring jig 15B, and the resin rod 8 is placed in the center of the wire group 2W. The electric wire group 2W is bent along the resin rod 8 and the water-stopping agent 6 melted in the bent state is applied.
As shown in FIG. 3 (C), the waterproof resin sheet 13 is wound around the bent portion after the water-stopping agent 6 is applied, and then the water-stopping agent 6 is spread through the wire group without any gaps by sandwiching the wire group 2W from the outside. .
Next, as shown in FIG. 3D, the adhesive tape 14 is half-wrapped along the entire length of the resin rod 8 in the length direction. Thereby, the water stop agent 6 filled in the electric wire group 2 </ b> W along the bent shape of the resin rod 8 is cured into the bent shape.
3C may be omitted and the tape winding shown in FIG. 3D may be used. However, since the electric wire group has rigidity in the linear direction, the electric wire group 2W and the water stoppage are provided by both the sheet 13 and the adhesive tape 14. It is preferable to bend the agent 6.

前記のように、樹脂棒８に沿って電線群２Ｗを屈曲し、電線群中の止水剤６を屈曲して硬化させた線間止水部５を設けておき、その後、図３（Ｄ）に示すように、ワイヤハーネス２にグロメット１を通し、前記図１、２に示すように、屈曲した線間止水部５をグロメット１の小径筒部１２に位置させる。これにより、小径筒部１２はエラストマー製であるため屈曲した線間止水部５により屈曲させることができる。   As described above, the wire group 2W is bent along the resin rod 8, and the water-stopping part 5 between the wires is bent and cured, and then the line water-stop part 5 is provided. As shown in FIG. 1, the grommet 1 is passed through the wire harness 2, and the bent water-stopping portion 5 is positioned in the small-diameter cylindrical portion 12 of the grommet 1 as shown in FIGS. Thereby, since the small diameter cylinder part 12 is made of an elastomer, it can be bent by the bent line water stop part 5.

前記のように、小径筒部１２を屈曲させたグロメット１を取り付けたワイヤハーネス２を自動車に配索し、グロメット１を車体パネルＰの貫通穴Ｈに挿入係止すると、該貫通穴Ｈから車室側に突出するグロメット１の小径筒部１２はＬ字状に急激曲げされ、該小径筒部１２から引き出されるワイヤハーネス２は最適経路で配索される。   As described above, when the wire harness 2 to which the grommet 1 having the small-diameter cylindrical portion 12 bent is attached to the automobile and the grommet 1 is inserted and locked into the through hole H of the vehicle body panel P, the vehicle is removed from the through hole H. The small-diameter cylindrical portion 12 of the grommet 1 protruding toward the chamber side is bent sharply into an L shape, and the wire harness 2 drawn out from the small-diameter cylindrical portion 12 is routed through an optimal route.

前記のように、グロメットの小径筒部を直線状に成形しておいても、屈曲した樹脂棒８を用いることで、小径筒部を所要角度に簡単かつ確実に屈曲させることができる。   As described above, even if the small-diameter cylindrical portion of the grommet is linearly formed, the small-diameter cylindrical portion can be easily and reliably bent at a required angle by using the bent resin rod 8.

図４に第２実施形態を示す。
第２実施形態では、止水剤６を充填した線間止水部をワイヤハーネス２に設けておくのではなく、グロメット１にワイヤハーネス２を挿通した後に、グロメット１の大径筒部１０を上向きとして止水剤６を上方から注入して、小径筒部１２に止水剤６を充填している。かつ、屈曲した樹脂棒８を大径筒部１０から小径筒部１２へと挿入している。この樹脂棒８の挿入で、グロメット１の小径筒部１２は樹脂棒８に沿って若干屈曲され、樹脂棒８の先端が位置する小径筒部先端１２ａの外周からワイヤハーネス２の外周にかけて粘着テープ２５を巻き付けて、電線群２Ｗを樹脂棒８に沿わせて屈曲保持している。この状態で小径筒部１２内および粘着テープ２５で囲まれた部分の止水剤６が屈曲した状態で硬化する。よって、第１実施形態の図１と同様な形状となり、車体パネルＰの貫通穴Ｈから突出したグロメット１の小径筒部１２を急激曲げすることができる。 FIG. 4 shows a second embodiment.
In the second embodiment, the line water-stop portion filled with the water-stopping agent 6 is not provided in the wire harness 2, but the large-diameter cylindrical portion 10 of the grommet 1 is inserted after the wire harness 2 is inserted into the grommet 1. The water-stopping agent 6 is injected upward from above and the small-diameter cylindrical portion 12 is filled with the water-stopping agent 6. In addition, the bent resin rod 8 is inserted from the large diameter cylindrical portion 10 into the small diameter cylindrical portion 12. By inserting the resin rod 8, the small diameter cylindrical portion 12 of the grommet 1 is slightly bent along the resin rod 8, and the adhesive tape extends from the outer periphery of the small diameter cylindrical portion distal end 12 a where the tip of the resin rod 8 is positioned to the outer periphery of the wire harness 2. 25 is wound and the electric wire group 2W is bent and held along the resin rod 8. In this state, the water-stopping agent 6 in the portion surrounded by the small-diameter cylindrical portion 12 and the adhesive tape 25 is cured in a bent state. Therefore, it becomes the shape similar to FIG. 1 of 1st Embodiment, and the small diameter cylinder part 12 of the grommet 1 protruded from the through-hole H of the vehicle body panel P can be bent rapidly.

１ グロメット
２ ワイヤハーネス
５ 線間止水部
６ 止水剤
８ 樹脂棒
１２ 小径筒部
Ｐ 車体パネル
Ｈ 貫通穴 DESCRIPTION OF SYMBOLS 1 Grommet 2 Wire harness 5 Line water stop part 6 Water stop agent 8 Resin rod 12 Small diameter cylinder part P Body panel H Through hole

Claims (3)

車体パネルの貫通穴を貫通する部位のワイヤハーネスにグロメットが外嵌され、前記貫通穴を貫通直後のワイヤハーネスが前記グロメットの小径筒部と共に屈曲されて配索されるものであり、
前記グロメットは前記車体パネルの貫通穴の周縁に係止する車体係止部が設けられた大径筒部に前記ワイヤハーネスを密嵌して挿通する小径筒部が同一軸線上に連続して設けられており、
前記小径筒部内を貫通するワイヤハーネスの電線群中に止水剤が充填されると共に、該止水剤中に前記ワイヤハーネスの屈曲と対応した屈曲形状を有する樹脂棒が貫通され、該樹脂棒により前記小径筒部が曲げられると共に該屈曲される小径筒部内で前記止水剤が硬化されて屈曲された線間止水部が設けられ、
前記屈曲された線間止水部が設けられた領域では、前記小径筒部内で前記線間止水部の外周に粘着テープが巻き付けられ、または前記小径筒部の外周に前記屈曲された線間止水部に沿わせて粘着テープが巻き付けられていることを特徴とするワイヤハーネスのグロメット取付構造。 Grommet is fitted in a portion of the wire harness passing through the through hole of the vehicle body panel, the wire harness just after penetrating the through hole is flexion music with the small-diameter tubular portion of the grommet is intended to be routed,
The grommet is continuously provided on the same axis with a small-diameter cylindrical portion through which the wire harness is closely fitted and inserted into a large-diameter cylindrical portion provided with a vehicle body locking portion that is locked to the periphery of the through hole of the vehicle body panel. And
A resin rod having a bent shape corresponding to the bending of the wire harness is penetrated into the water stopping agent, and a wire rod of the wire harness penetrating the inside of the small-diameter cylindrical portion is filled. The small-diameter cylindrical portion is bent by the above-mentioned, and the water-stopping agent is cured and bent in the small-diameter cylindrical portion to be bent .
In the region where the bent line water-stop portion is provided, an adhesive tape is wound around the outer periphery of the line water-stop portion within the small-diameter cylindrical portion, or between the bent lines on the outer periphery of the small-diameter tube portion grommet mounting structure of a wire harness, wherein the adhesive tape along a waterproof part is et winding. 請求項１に記載のワイヤハーネスのグロメット取付構造の形成方法であって、
前記グロメットに挿通する前の電線群に止水剤を充填すると共に、該止水剤の充填領域の電線群中に前記樹脂棒を貫通させ、硬化前の止水剤を電線群と共に前記樹脂棒に沿わせて屈曲させた後に前記粘着テープを巻き付けて屈曲形状を保持し、該屈曲形状に前記止水剤を硬化させた線間止水部を設けた後に前記グロメットに挿通し、該グロメットの直線状の小径筒部に前記屈曲した線間止水部を貫通させて前記小径筒部を屈曲させるワイヤハーネスのグロメット取付構造の形成方法。 A method for forming a grommet mounting structure for a wire harness according to claim 1,
The electric wire group before being inserted into the grommet is filled with a water-stopping agent, and the resin rod is penetrated into the electric wire group in the filling region of the water-stopping agent, and the water-stopping agent before curing is put together with the electric wire group with the resin rod. The adhesive tape is wound around the bent shape to hold the bent shape, and the line-shaped water-stopping portion obtained by curing the water-stopping agent is provided in the bent shape, and then inserted into the grommet. A method for forming a grommet mounting structure for a wire harness in which the bent line water-stopping portion is passed through a linear small-diameter cylindrical portion to bend the small-diameter cylindrical portion. 請求項１に記載のワイヤハーネスのグロメット取付構造の形成方法であって、A method for forming a grommet mounting structure for a wire harness according to claim 1,
前記グロメットにワイヤハーネスの電線群を挿通した後に、該グロメットの前記大径筒部を上向きとして、前記止水剤を上方から注入して前記小径筒部に充填すると共に前記樹脂棒を挿入して前記小径筒部を屈曲させ、該樹脂棒の位置する前記小径筒部の外周から前記粘着テープを該小径筒部から引き出されるワイヤハーネスの外周にかけて巻き付け、該ワイヤハーネスおよび小径筒部を前記樹脂棒に沿わせて屈曲させると共に前記止水剤を硬化させているワイヤハーネスのグロメット取付構造の形成方法。After inserting the wire group of the wire harness into the grommet, the large-diameter cylindrical portion of the grommet is directed upward, the water-stopping agent is injected from above to fill the small-diameter cylindrical portion, and the resin rod is inserted. The small diameter cylindrical portion is bent, and the adhesive tape is wound from the outer periphery of the small diameter cylindrical portion where the resin rod is located to the outer periphery of the wire harness drawn from the small diameter cylindrical portion, and the wire harness and the small diameter cylindrical portion are wound on the resin rod A method for forming a grommet mounting structure for a wire harness that is bent along the wire and hardens the waterstop agent.
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