JP2008206370A - Guide protector for grommet - Google Patents

Guide protector for grommet Download PDF

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JP2008206370A
JP2008206370A JP2007042535A JP2007042535A JP2008206370A JP 2008206370 A JP2008206370 A JP 2008206370A JP 2007042535 A JP2007042535 A JP 2007042535A JP 2007042535 A JP2007042535 A JP 2007042535A JP 2008206370 A JP2008206370 A JP 2008206370A
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grommet
diameter
hole
small
cylindrical portion
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Daiki Nagai
大樹 永易
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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 prevent a car body fitting/fixing recess of a grommet from being incompletely fitted/fixed to an inner peripheral face of a throughhole with the grommet slantingly inserted into the throughhole of a car body panel. <P>SOLUTION: A protector for guiding is a resin molded product having a conical tubular body portion, and is fitted outside the grommet, wherein a group of electric wires of wire harness arranged in a car is inserted through the grommet to be held, then the grommet is fed through the throughhole of the car body panel to be fitted. In an outer peripheral face of a tube portion with conically enlarged diameter of the grommet of rubber or elastomer, the conical body portion is engaged outside a region reaching up to an outside diametrical position equivalent to an inside diameter of the throughhole from a small diametrical end side of the tube portion with the enlarged diameter. The body portion can be opened/closed with a slit provided in an axial direction, by which fitting to the tube portion with the enlarged diameter of the grommet is possible from a rectangular direction to an axis. Moreover, a tongue strip for tape winding is protrusively provided from an end edge of a small diametrical side of the main body portion, and the tongue strip for tape winding is fixed by tape winding to a small diametrical tube portion, through which the group of electric wires is adherently inserted continuously to a small diametrical side end of the tube portion with the enlarged diameter of the grommet. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明はグロメット用ガイドプロテクタに関し、詳しくは、自動車に配索するワイヤハーネスに取り付けるグロメットを車体パネルの貫通穴に貫通して装着する際に、グロメットの貫通姿勢を矯正して、グロメットに設けた環状の車体係止凹部の全周が前記貫通穴の周縁に正確に係止できるようにするものである。   The present invention relates to a guide protector for a grommet, and more specifically, when a grommet to be attached to a wire harness routed in an automobile is inserted through a through hole of a vehicle body panel, the grommet's through posture is corrected and provided in the grommet. The entire circumference of the annular body locking recess can be accurately locked to the periphery of the through hole.

自動車のエンジンルームから車室側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ダッシュパネル（またはカウルパネル）に穿設した貫通穴を貫通して配索しており、該貫通穴から車室内への浸水および塵埃の侵入を防止するため、ワイヤハーネスにゴムまたはエラストマーで一体成形したグロメットを外装し、該グロメットに設けた車体係止凹部を貫通穴の周縁に係止している。
前記車体パネルの貫通穴へのグロメットの取り付けは、図５（Ａ）に示すように、エンジンルーム（Ｘ）側からダッシュパネルＰの貫通穴Ｈにグロメット１の小径筒部１ａを挿入し、ついで、車室（Ｙ）側から小径筒部１ａを引っ張り、グロメット１の拡径筒部１ｂを縮径しながら貫通穴Ｈに引き込み、拡径筒部１ｂの大径側外周に設けた車体係止凹部１ｃを貫通穴Ｈの周縁に引っ掛けて係止している。 The wire harness routed from the engine room of the automobile to the passenger compartment side is routed through a through-hole drilled in the dash panel (or cowl panel) that separates the engine room from the passenger compartment. In order to prevent water from entering the passenger compartment from the hole and intrusion of dust, a grommet integrally molded with rubber or elastomer is externally attached to the wire harness, and the vehicle body locking recess provided in the grommet is locked to the periphery of the through hole. Yes.
As shown in FIG. 5 (A), the grommet is attached to the through hole H of the dash panel P from the engine room (X) side, and then the grommet 1 is inserted into the through hole of the vehicle body panel. Pulling the small-diameter cylindrical portion 1a from the passenger compartment (Y) side, pulling the enlarged-diameter cylindrical portion 1b of the grommet 1 into the through hole H while reducing the diameter, and locking the vehicle body provided on the outer periphery on the large-diameter side of the enlarged-diameter cylindrical portion 1b The recess 1c is hooked on the periphery of the through hole H and locked.

前記グロメットの貫通穴への装着工程において、グロメット１を貫通穴Ｈに挿入すると共に引っ張る時に、貫通穴Ｈの中心線とグロメット１の中心軸線とを一致させて、真っ直ぐな方向Ｓ０とすると、グロメット１の環状の車体係止凹部１ｃの全周が貫通穴Ｈの全周縁に正確に係止することができる。
しかしながら、グロメット１を貫通穴Ｈに取付作業時に、図５（Ａ）に示すように、エンジンルーム（Ｘ）から小径筒部１ａを貫通穴Ｈの中心線Ｓ０に対して斜め方向Ｓ１、Ｓ２に挿入したり、また、車室（Ｙ）から引っ張る際に斜め方向Ｓ３、Ｓ４方向に引っ張ることがある。特に、エンジンルーム（Ｘ）から車室（Ｙ）へと配索するエンジンハーネス（フロントハーネスとも称す）は電線量が多く重量があるため、該ワイヤハーネスに取り付けたグロメット１も強度を必要とするため、室内側から引っ張ってグロメット１の車体係止凹部１ｃを貫通穴Ｈの周縁に係止する作業は大きな引張力を必要とするため、真っ直ぐな方向からずれることが多い。
グロメット１が斜め方向に挿入されたり、斜め方向に引っ張り込まれると、車体係止凹部１ｃは貫通穴Ｈの周縁に片当たりで係止され、図５（Ｂ）に示すように、貫通穴Ｈの全周に車体係止凹部１ｃが係止されずに、部分的に係止されない部分が発生する。この状態になると、防水、防塵性能が低下すると共に、車両振動等になりグロメット１が貫通穴Ｈから離脱する恐れもある。
前記した問題は、エンジンハーネスに限らず、車体パネルの貫通穴にグロメットを貫通して装着する箇所に発生する問題である。 When the grommet 1 is inserted into the through hole H and pulled in the mounting process of the grommet in the through hole, the center line of the through hole H and the central axis of the grommet 1 are aligned to form a straight direction S0. The entire circumference of the single annular vehicle body locking recess 1c can be accurately locked to the entire periphery of the through hole H.
However, at the time of attaching the grommet 1 to the through hole H, the small-diameter cylindrical portion 1a from the engine room (X) in the oblique directions S1 and S2 with respect to the center line S0 of the through hole H as shown in FIG. When it is inserted or pulled from the passenger compartment (Y), it may be pulled in the diagonal directions S3 and S4. In particular, since an engine harness (also referred to as a front harness) routed from the engine room (X) to the passenger compartment (Y) has a large amount of electric wire and is heavy, the grommet 1 attached to the wire harness also requires strength. For this reason, the operation of pulling the vehicle body locking recess 1c of the grommet 1 to the periphery of the through hole H by pulling from the indoor side requires a large tensile force, and therefore often deviates from a straight direction.
When the grommet 1 is inserted in an oblique direction or pulled in an oblique direction, the vehicle body locking recess 1c is locked to the periphery of the through hole H in one piece, and as shown in FIG. The vehicle body locking recess 1c is not locked to the entire periphery of the vehicle, and a portion that is not partially locked occurs. In this state, the waterproof and dustproof performance is deteriorated, and the vehicle is vibrated and the grommet 1 may be detached from the through hole H.
The above-described problem is not limited to the engine harness but is a problem that occurs at a place where the grommet is inserted through the through hole of the vehicle body panel.

前記問題に対して、特開２００３−３２８５２号公報では、図６に示すように、グロメット４を車体パネルＰ側へと押圧する押圧部材５と、該押圧部材５を車体パネルＰに係止するためにスプリングブロック６を設け、かつ、該スプリングブロック６を係止するフック７を車体パネルＰに突設している。   With respect to the above problem, in Japanese Patent Application Laid-Open No. 2003-32852, as shown in FIG. 6, a pressing member 5 that presses the grommet 4 toward the vehicle body panel P, and the pressing member 5 is locked to the vehicle body panel P. For this purpose, a spring block 6 is provided, and a hook 7 for locking the spring block 6 is provided on the vehicle body panel P.

特開２００３−３２８５２号公報JP 2003-32852 A

特許文献１の構成とすると、グロメット４を車体パネルＰに押圧して係止しているため、車体パネルＰへのグロメット１の装着力を確保することはできる。
しかしながら、押圧部材５およびスプリングブロック６を必要とし、部品点数が多いためにコスト高になると共に、これらを取り付けるための作業が必要で作用工数も多くなる。さらに、車体パネル側にフック７を突設しておく必要がある等の問題がある。 If it is set as the structure of patent document 1, since the grommet 4 is pressed and latched to the vehicle body panel P, the mounting force of the grommet 1 to the vehicle body panel P can be ensured.
However, since the pressing member 5 and the spring block 6 are required and the number of parts is large, the cost is increased, and an operation for attaching them is necessary and the number of working steps is also increased. Further, there is a problem that it is necessary to project the hook 7 on the vehicle body panel side.

本発明は、前記問題に鑑みてなされたもので、車体パネルの貫通穴に貫通させるグロメットの挿入および引き込み姿勢が貫通穴とグロメットの中心が一致するように矯正して、グロメットが車体パネルの貫通穴の全周に確実に係止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. The grommet is inserted and retracted through the through hole of the vehicle body panel so that the center of the grommet is aligned with the through hole. It is an object to be able to reliably lock the entire circumference of the hole.

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電線群を挿通保持して車体パネルの貫通穴に貫通して装着するグロメットに外装するガイド用プロテクタであって、
ゴムまたはエラストマーからなる前記グロメットの円錐状に拡径する拡径筒部の外周面において、該拡径筒部の小径端側から前記貫通穴の内径と同等の外径位置に達するまでの領域に外嵌する円錐筒状（所謂ラッパ形状）の本体部を設けた樹脂成形品からなり、かつ、 前記本体部には、グロメットの拡径筒部に軸直角方向から取付可能とするスリットを軸線方向に入れて開閉可能とし、さらに、前記本体部の小径側端縁からテープ巻き舌片を突設し、前記グロメットの拡径筒部の小径側端に連続して前記電線群を密着して貫通する小径筒部に前記テープ巻用舌片をテープ巻して固定する構成としていることを特徴とするグロメット用ガイドプロテクタを提供している。 In order to solve the above-mentioned problem, the present invention is a guide protector that is externally mounted on a grommet that is inserted and held through a through hole of a vehicle body panel through a wire group of a wire harness that is routed in an automobile.
On the outer peripheral surface of the enlarged diameter cylindrical portion of the grommet that is made of rubber or elastomer, the diameter of the enlarged diameter cylindrical portion extends from the small diameter end side to the outer diameter position equivalent to the inner diameter of the through hole. It consists of a resin-molded product provided with a conical cylindrical (so-called trumpet-shaped) main body part that fits outside, and the main body part has a slit that can be attached to the enlarged diameter cylindrical part of the grommet from the direction perpendicular to the axis. In addition, a tape-wrapped tongue piece protrudes from the small-diameter side edge of the main body, and the wire group is in close contact with the small-diameter end of the enlarged-diameter cylindrical portion of the grommet. A grommet guide protector is provided in which the tape winding tongue piece is fixed to a small-diameter cylindrical portion by tape winding.

前記ガイドプロテクタは樹脂成形品とし、厚さ１．０ｍｍ〜１．５ｍｍ程度とし、車体パネルの貫通穴に当接しても変形しない所要の剛性を持たせている。
本発明では、ゴムまたはエラストマーからなり弾性変形容易なグロメットに対して、前記構成の形状保持性を有する樹脂成形品からなるガイドプロテクタを、グロメットの外面にテープ巻で固定することで、グロメットが貫通穴の内周面に接触して弾性変形してもガイドプロテクタは弾性変形しないため、車体パネルの貫通穴の中心とグロメットの中心軸線を位置合わせさせることができる。よって、グロメットが斜め挿入および斜め引き込みがなされても、真っ直ぐな挿入姿勢および引き込み姿勢に矯正して、グロメットの車体係止凹部の全周を車体パネルの貫通穴の全周縁に正確に係止することができる。 The guide protector is a resin molded product and has a thickness of about 1.0 mm to 1.5 mm, and has a required rigidity that does not deform even when it comes into contact with the through hole of the vehicle body panel.
In the present invention, a grommet is penetrated by fixing a guide protector made of a resin molded product having the above-described shape retaining property to a grommet made of rubber or elastomer by tape winding on the outer surface of the grommet. Even if the guide protector does not elastically deform even if it contacts the inner peripheral surface of the hole and elastically deforms, the center of the through hole of the vehicle body panel and the center axis of the grommet can be aligned. Therefore, even if the grommet is obliquely inserted and retracted, the grommet is corrected to a straight insertion posture and a pulling posture, and the entire circumference of the grommet body locking recess is accurately locked to the entire periphery of the through hole of the vehicle body panel. be able to.

また、本発明のガイドプロテクタは、グロメットの拡径筒部の外周面が車体パネルの貫通穴の内周面と接触する位置までに取り付けているだけであるため、該位置から拡径筒部を縮径させながら貫通穴を挿通する時には、貫通穴の内周面と接触しない。よって、ガイドプロテクタをグロメットに取り付けることにより、貫通穴へのグロメットの挿入力を増大させることは無い。   Further, the guide protector of the present invention is attached only to the position where the outer peripheral surface of the enlarged diameter cylindrical portion of the grommet contacts the inner peripheral surface of the through hole of the vehicle body panel. When the through hole is inserted while reducing the diameter, it does not contact the inner peripheral surface of the through hole. Therefore, attaching the guide protector to the grommet does not increase the insertion force of the grommet into the through hole.

さらに、ガイドプロテクタは、その円錐筒状（ラッパ形状）の本体部にスリットを設けているため、グロメットの拡径筒部に対してスリットを開いて側方から外嵌できるため、グロメットに対して容易に取り付けることができる。かつ、グロメットの拡径筒部の外径が相違しても、スリットの開き寸法が変わるだけで対応でき、複数サイズのグロメットへ取り付けることができる共用品とすることができる。
また、本発明のガイドプロテクタはグロメットを車体パネルの貫通穴に装着した後も、ワイヤハーネスに引っ張られてグロメットが傾斜することを抑制することができる利点がある。
なお、前記テープ巻用舌片とグロメットの小径筒部とをテープ巻きで固定しているが、テープ巻きに変えて締結バンドで固定してもよい。また、ガイドプロテクタはグロメットを車体パネルの貫通穴に装着後には取り外して再利用することも可能である。 Furthermore, since the guide protector is provided with a slit in its conical cylindrical (trumpet) main body, the slit can be opened from the side of the enlarged diameter cylindrical portion of the grommet. Easy to install. Moreover, even if the outer diameter of the enlarged diameter cylindrical portion of the grommet is different, it can be dealt with only by changing the slit opening size, and can be a common product that can be attached to a plurality of sizes of grommets.
Further, the guide protector of the present invention has an advantage that it is possible to prevent the grommet from being inclined by being pulled by the wire harness even after the grommet is mounted in the through hole of the vehicle body panel.
The tape winding tongue and the grommet small-diameter cylindrical portion are fixed by tape winding, but may be fixed by a fastening band instead of tape winding. The guide protector can be removed and reused after the grommet is mounted in the through hole of the vehicle body panel.

前記ガイドプロテクタを取り付けられるグロメットは、ワイヤハーネスの電線群を密着して挿通する小径筒部と、該小径筒部の一端から円錐状に拡径する拡径筒部と、該拡径筒部の大径側の外周面に環状の車体係止凹部を有する形状であれば良い。   The grommet to which the guide protector is attached includes a small-diameter cylindrical portion that closely inserts the wire group of the wire harness, an enlarged-diameter cylindrical portion that expands in a conical shape from one end of the small-diameter cylindrical portion, Any shape having an annular vehicle body locking recess on the outer peripheral surface on the large diameter side may be used.

本出願人は、前記グロメットとして、グロメットの拡径筒部の外周面には小径側端から前記車体係止凹部に達する突条を放射状に設けられ、これら突条は前記貫通穴の内径と同等の外径位置で突出量を小さくして角度を変えた段差が設けられているグロメットを提供している。
前記構成のグロメットは、放射線状に突設した突条の外面が車体パネルの貫通穴内周面と接触し、貫通穴内周面との接触面積を低減することで、グロメットの挿入力を小さくできる利点を有するものである。
このグロメットに本発明のガイドプロテクタを取り付ける場合には、前記段差に達するまでの位置の外面に前記ラッパ形状部の内面を密着させて外嵌している。 The present applicant, as the grommet, is provided with radii extending radially from the small-diameter side end to the vehicle body locking recess on the outer peripheral surface of the enlarged diameter cylindrical portion of the grommet, and these ridges are equivalent to the inner diameter of the through hole. The grommet is provided with a step having a small protrusion amount and a different angle at the outer diameter position.
The grommet having the above-described configuration is advantageous in that the insertion force of the grommet can be reduced by reducing the contact area with the inner peripheral surface of the through hole of the body panel, and the outer surface of the projecting ridge projecting radially is in contact with the inner peripheral surface of the through hole. It is what has.
When the guide protector of the present invention is attached to the grommet, the inner surface of the trumpet-shaped portion is fitted on the outer surface at a position until the step is reached.

また、グロメットは、通常黒色であるため、ガイドプロテクタは一目で識別できる白色等の異なる色で形成しておくと、該ガイドプロテクタを貫通させる貫通穴の軸線と一致させやすくなり、グロメットと貫通穴の中心軸線を簡単に一致させながら挿入および引き込みをすることができる。   In addition, since the grommet is usually black, if the guide protector is formed in a different color such as white that can be identified at a glance, it will be easier to match the axis of the through hole that penetrates the guide protector. It is possible to insert and retract while easily aligning the central axis of each other.

上述したように、本発明のガイドプロテクタをグロメットに取り付けるだけで、車体パネルの貫通穴の中心とグロメットの中心軸線を自動的に位置合わせさせることができる。よって、グロメットが斜め挿入および斜め引き込みがなされても、真っ直ぐな挿入姿勢および引き込み姿勢に矯正して、グロメットの車体係止凹部の全周を車体パネルの貫通穴の全周縁に正確に係止することができる。   As described above, the center of the through hole of the vehicle body panel and the center axis of the grommet can be automatically aligned by simply attaching the guide protector of the present invention to the grommet. Therefore, even when the grommet is obliquely inserted and retracted, the grommet is corrected to a straight insertion posture and a pulling posture, and the entire circumference of the grommet body locking recess is accurately locked to the entire periphery of the through hole of the vehicle body panel. be able to.

以下、本発明の実施形態を図１乃至図４を参照して説明する。
本実施形態のガイドプロテクタ２０は、前記図５と同様に、エンジンルーム（Ｘ）側からダッシュパネルＰの貫通穴Ｈに貫通するワイヤハーネスＷ／Ｈに外装するグロメット１０に予め取り付けられるものである。 Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
The guide protector 20 of this embodiment is attached in advance to the grommet 10 that is externally mounted on the wire harness W / H that penetrates the through hole H of the dash panel P from the engine room (X) side, as in FIG. .

前記グロメット１０はエラストマー製の黒色の成形品であり、小径筒部１０ａの一端に連続して円錐状に拡径する拡径筒部１０ｂを備え、該拡径筒部１０ｂの大径側の外周面に環状に車体係止凹部１０ｃを設けている。
また、拡径筒部１０ｂの外周面には小径筒部１０ａとの連結位置Ｐ１より車体係止凹部１０ｃへと放射状に複数の突条１０ｄを設けている。かつ、これら突条１０ｄを設けた部分の外径が前記貫通穴Ｈの内径と同等となる位置Ｐ２で、突条１０ｄの突出量を小さくして段差１０ｄ−１を設けている。 The grommet 10 is a black molded product made of an elastomer, and includes a large diameter cylindrical portion 10b that continuously expands in a conical shape at one end of the small diameter cylindrical portion 10a, and an outer periphery on the large diameter side of the large diameter cylindrical portion 10b. A body locking recess 10c is provided in a ring shape on the surface.
Further, a plurality of ridges 10d are provided radially on the outer peripheral surface of the enlarged diameter cylindrical portion 10b from the connection position P1 with the small diameter cylindrical portion 10a to the vehicle body locking recess 10c. Further, at the position P2 where the outer diameter of the portion provided with the protrusions 10d is equal to the inner diameter of the through hole H, the protrusion 10d-1 is provided by reducing the protrusion amount of the protrusions 10d.

ガイドプロテクタ２０は黒色とは異なる白色系の樹脂成形品からなり、円錐筒形状（ラッパ形状）とした本体部２１と、該本体部２１の小径端２１ａから突設したテープ巻用舌片２２を一体的に備えている。前記本体部２１は小径端２１ａから大径端２１ｂまでの軸方向の長さＬは、前記グロメット１０のＰ１からＰ２に達するまでの長さとし、Ｐ２の位置よりも若干小径筒部１０ａの位置に大径端２１ｂが位置する設定としている。   The guide protector 20 is made of a white resin molded product different from black, and includes a main body portion 21 having a conical cylinder shape (a trumpet shape) and a tape winding tongue piece 22 protruding from a small diameter end 21 a of the main body portion 21. Integrated. The main body 21 has an axial length L from the small-diameter end 21a to the large-diameter end 21b that extends from P1 to P2 of the grommet 10 and is slightly smaller than the P2 position. The large diameter end 21b is set to be positioned.

前記本体部２１には周方向の一部にスリット２３を軸線方向の全長に設け、該スリット２３を開いて、グロメットの拡径筒部１０ｂに対して軸直角方向から取付可能としている。本体部２１はスリット２３を開かない原状で、その内周面は、グロメット１０の突条１０ｄの外周面と接触する大きさに設定している。   The main body 21 is provided with a slit 23 in a part of the circumferential direction along the entire length in the axial direction, and the slit 23 is opened so that the main body 21 can be attached to the enlarged diameter cylindrical portion 10b of the grommet from the direction perpendicular to the axis. The main body 21 has an original shape that does not open the slit 23, and the inner peripheral surface thereof is set to a size that comes into contact with the outer peripheral surface of the protrusion 10 d of the grommet 10.

ガイドプロテクタ２０はポリエチレン、ポリプロピレンまたはナイロン等で成形し、その厚さは１．０ｍｍ〜１．５ｍｍ程度とし、車体パネルの貫通穴Ｈの内周面に当接して押圧されても変形しない剛性を付与している。   The guide protector 20 is formed of polyethylene, polypropylene, nylon, or the like, and has a thickness of about 1.0 mm to 1.5 mm. The guide protector 20 has rigidity that does not deform even when pressed against the inner peripheral surface of the through hole H of the vehicle body panel. Has been granted.

前記ガイドプロテクタ２０は、本体部２１のスリット２３を開いてグロメット１０の拡径筒部１０ｂに被せ、テープ巻用舌片２２を小径筒部１０ａにテープ３０を巻き付けて取り付けている。この取付で本体部２１は拡径筒部１０ｂにＰ１からＰ２近傍までの突条１０の外面にガイドプロテクタ２０の内周面が密着される。   The guide protector 20 opens the slit 23 of the main body portion 21 and covers the enlarged diameter cylindrical portion 10b of the grommet 10, and the tape winding tongue piece 22 is attached by winding the tape 30 around the small diameter cylindrical portion 10a. With this attachment, the inner peripheral surface of the guide protector 20 is brought into close contact with the outer surface of the ridge 10 from P1 to the vicinity of P2 in the main body portion 21 to the enlarged diameter cylindrical portion 10b.

前記ガイドプロテクタ２０を取り付けたグロメット１０にワイヤハーネスＷ／Ｈを構成する電線群を挿通し、小径筒部１０ｂの先端とワイヤハーネスＷ／Ｈをテープ３１で巻き付けて固定している。
前記ワイヤハーネスＷ／Ｈを車体パネルＰの貫通穴Ｈに貫通させる作業時に、前記図５（Ａ）と同様に、エンジンルーム（Ｘ）側からグロメット１０の小径筒部１０ａを通し、次いで、車室（Ｙ）に突出した小径筒部１０ａを引っ張り、グロメット１０の拡径筒部１０ｂを縮径させて貫通させ、貫通穴Ｈの周縁に車体係止凹部１０ｃを係止している。 A group of wires constituting the wire harness W / H is inserted into the grommet 10 to which the guide protector 20 is attached, and the tip of the small diameter cylindrical portion 10b and the wire harness W / H are wound and fixed with a tape 31.
During the operation of passing the wire harness W / H through the through hole H of the vehicle body panel P, the small diameter cylindrical portion 10a of the grommet 10 is passed from the engine room (X) side as in FIG. The small-diameter cylindrical portion 10 a protruding into the chamber (Y) is pulled to reduce the diameter of the enlarged-diameter cylindrical portion 10 b of the grommet 10, and the vehicle body locking recess 10 c is locked to the periphery of the through hole H.

前記グロメット１０の貫通穴Ｈへの装着作業時に、図３に示すように、貫通穴Ｈの中心軸線Ｓ０に対してグロメット１０の中心軸線が下方から上向きの傾斜方向Ｓ１、上方から下向きの傾斜方向Ｓ２で挿入された際、グロメットは弾性変形するが、ガイドプロテクタ２０は弾性変形しない。よって、図４に示すように、貫通穴Ｈの内周面に沿うように摺動して、ガイドプロテクタ２０の中心軸線（即ち、グロメットの中心軸線）が貫通穴Ｈの中心軸線と一致するように矯正され、言わば、自動調芯される。かつ、車室側からグロメット１０の小径筒部１０ａを引っ張る際にも、上向き傾斜方向Ｓ３、下向き傾斜方向Ｓ４に引っ張っても、ガイドプロテクタ１０は弾性変形しないため、その外周面が貫通穴Ｈの内周面を摺動して、ガイドプロテクタ１０と貫通穴Ｈの中心軸線が一致され、グロメット１０の姿勢を貫通穴Ｈに対して真っ直に挿通するように矯正される。   When the grommet 10 is attached to the through hole H, as shown in FIG. 3, the central axis of the grommet 10 is inclined from the lower side to the upward direction S <b> 1, and the inclined direction is downward from the upper side. When inserted in S2, the grommet is elastically deformed, but the guide protector 20 is not elastically deformed. Therefore, as shown in FIG. 4, it slides along the inner peripheral surface of the through hole H so that the central axis of the guide protector 20 (that is, the central axis of the grommet) coincides with the central axis of the through hole H. In other words, it is automatically aligned. Moreover, since the guide protector 10 is not elastically deformed even when the small-diameter cylindrical portion 10a of the grommet 10 is pulled from the passenger compartment side, even if it is pulled in the upward inclined direction S3 and the downward inclined direction S4, the outer peripheral surface of the through hole H By sliding along the inner peripheral surface, the center axis of the guide protector 10 and the through hole H are aligned, and the posture of the grommet 10 is corrected so as to be inserted straight into the through hole H.

このように、ガイドプロテクタ２０をグロメット１０に取り付けるだけで、グロメット１０の環状の車体係止凹部１０ｃの全周を貫通穴Ｈの内周面全体に確実に係止することができる。よって、自動車の走行振動やワイヤハーネスの引っ張りで、グロメット１０を貫通穴Ｈから離脱するのを防止できると共に、防水、防塵性能も高めることができる。
また、グロメット１０を貫通穴Ｈに貫通係止する作業時に、グロメットの挿入角度を細心の注意をして一致させる必要がないため作業が簡単になると共に、グロメットが貫通穴に斜めに取り付けられた場合に生じるやり直し作業を無くすこともでき、作業者の量り労力低減を図ることができる。 In this way, the entire circumference of the annular vehicle body locking recess 10 c of the grommet 10 can be reliably locked to the entire inner peripheral surface of the through hole H simply by attaching the guide protector 20 to the grommet 10. Therefore, it is possible to prevent the grommet 10 from being detached from the through hole H due to the driving vibration of the automobile or the pulling of the wire harness, and the waterproof and dustproof performance can be enhanced.
Further, when the grommet 10 is locked through the through hole H, it is not necessary to match the grommet insertion angle with great care, so that the operation is simplified and the grommet is attached to the through hole at an angle. It is possible to eliminate redo work that occurs in some cases, and to reduce the amount of labor required by the operator.

本発明は前記実施形態に限定されず、ドアと車体との間に配索するワイヤハーネスに取り付けるグロメットを、ドアおよび車体の貫通穴へ貫通係止する場合等にも適用できる。
また、ガイドプロテクタを取り付けるグロメットは、その拡径筒部に突条を設けていない場合にも、当然のことながら適用できる。 The present invention is not limited to the above-described embodiment, and can also be applied to a case where a grommet attached to a wire harness routed between a door and a vehicle body is through-locked to a through-hole of the door and the vehicle body.
Moreover, the grommet which attaches a guide protector is applicable naturally even when the protrusion is not provided in the diameter expansion cylinder part.

本発明の実施形態を示し、ガイドプロテクタを取り付けたグロメットをワイヤハーネスに装着している状態を示す斜視図である。It is a perspective view which shows the embodiment of this invention and shows the state which has mounted | worn the grommet which attached the guide protector to the wire harness. ガイドプロテクタの斜視図である。It is a perspective view of a guide protector. 前記グロメットを車体パネルの貫通穴に取り付け時の方向を示す図面である。It is drawing which shows the direction at the time of attaching the said grommet to the through-hole of a vehicle body panel. 貫通穴の内周面にガイドプロテクタの外周面が接する状態を示す図面である。It is drawing which shows the state which the outer peripheral surface of a guide protector contacts the inner peripheral surface of a through-hole. （Ａ）（Ｂ）は従来の問題点を示す図面である。(A) and (B) are drawings showing conventional problems. 従来例を示す図面である。It is drawing which shows a prior art example.

符号の説明Explanation of symbols

１０ グロメット
１０ａ 小径筒部
１０ｂ 拡径筒部
１０ｃ 車体係止凹部
１０ｄ 突条
２０ ガイドプロテクタ
２１ 本体部
２２ テープ巻用舌片
２３ スリット
Ｐ 車体パネル
Ｈ 貫通穴
Ｗ／Ｈ ワイヤハーネス DESCRIPTION OF SYMBOLS 10 Grommet 10a Small diameter cylinder part 10b Large diameter cylinder part 10c Car body latching recessed part 10d Projection 20 Guide protector 21 Main body part 22 Tape tongue part 23 Slit P Car body panel H Through hole W / H Wire harness

Claims (2)

自動車に配索されるワイヤハーネスの電線群を挿通保持して車体パネルの貫通穴に貫通して装着するグロメットに外装するガイド用プロテクタであって、
ゴムまたはエラストマーからなる前記グロメットの円錐状に拡径する拡径筒部の外周面において、該拡径筒部の小径端側から前記貫通穴の内径と同等の外径位置に達するまでの領域に外嵌する円錐筒状の本体部を設けた樹脂成形品からなり、かつ、
前記本体部には、グロメットの拡径筒部に軸直角方向から取付可能とするスリットを軸線方向に入れて開閉可能とし、さらに、前記本体部の小径側端縁からテープ巻き舌片を突設し、前記グロメットの拡径筒部の小径側端に連続して前記電線群を密着して貫通する小径筒部に前記テープ巻用舌片をテープ巻して固定する構成としていることを特徴とするグロメット用ガイドプロテクタ。 A guide protector that is externally mounted on a grommet that is inserted through and held in a wire harness of a wire harness that is routed in an automobile and is inserted through a through hole of a vehicle body panel.
On the outer peripheral surface of the enlarged diameter cylindrical portion of the grommet that is made of rubber or elastomer, the diameter of the enlarged diameter cylindrical portion extends from the small diameter end side to the outer diameter position equivalent to the inner diameter of the through hole. It consists of a resin molded product with a conical cylindrical body part that fits outside, and
The main body part can be opened and closed by inserting a slit that can be attached to the enlarged diameter cylindrical part of the grommet from the direction perpendicular to the axis in the axial direction, and a tape-wrapped tongue piece projects from the small-diameter side edge of the main body part The tape winding tongue is fixed to the small diameter cylindrical portion that is in close contact with and penetrates the small diameter side end of the expanded diameter cylindrical portion of the grommet. Grommet guide protector. 前記グロメットの拡径筒部の外周面には小径側端から前記車体係止凹部に達する突条を放射状に設けられ、これら突条は前記貫通穴の内径と同等の外径位置で突出量を小さくして角度を変えた段差が設けられており、該段差に達するまでの位置の外面に前記ラッパ形状部の内面を密着させて外嵌している請求項１に記載のグロメット用ガイドプロテクタ。   On the outer peripheral surface of the enlarged-diameter cylindrical portion of the grommet, ridges that reach the vehicle body locking recess from the small-diameter side end are provided radially, and these ridges have a protruding amount at an outer diameter position equivalent to the inner diameter of the through hole. The grommet guide protector according to claim 1, wherein a step having a small angle and a different angle is provided, and the inner surface of the trumpet-shaped portion is closely attached to the outer surface at a position until the step is reached.
JP2007042535A 2007-02-22 2007-02-22 Guide protector for grommet Withdrawn JP2008206370A (en)

Priority Applications (1)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200463607Y1 (en) * 2012-05-21 2012-11-14 다빛 주식회사 Packing for electrode lead coupled with a sign case
JP2016182929A (en) * 2015-03-27 2016-10-20 矢崎総業株式会社 Panel penetration method of grommet, convergence holding jig, wiring harness, wiring harness cabled by making grommet penetrate and fit to penetration hole of panel
CN108321741A (en) * 2018-02-08 2018-07-24 西安交通大学 Ultra-high/extra-high voltage gas-insulated wall bushing center current－carrying conductor stay bolt structure and ultra-high/extra-high voltage gas-insulated wall bushing
JP2021106437A (en) * 2019-12-26 2021-07-26 矢崎総業株式会社 Grommet fitting structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200463607Y1 (en) * 2012-05-21 2012-11-14 다빛 주식회사 Packing for electrode lead coupled with a sign case
JP2016182929A (en) * 2015-03-27 2016-10-20 矢崎総業株式会社 Panel penetration method of grommet, convergence holding jig, wiring harness, wiring harness cabled by making grommet penetrate and fit to penetration hole of panel
CN108321741A (en) * 2018-02-08 2018-07-24 西安交通大学 Ultra-high/extra-high voltage gas-insulated wall bushing center current－carrying conductor stay bolt structure and ultra-high/extra-high voltage gas-insulated wall bushing
JP2021106437A (en) * 2019-12-26 2021-07-26 矢崎総業株式会社 Grommet fitting structure
JP7374561B2 (en) 2019-12-26 2023-11-07 矢崎総業株式会社 Grommet mounting structure

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