JP2006087286A - Grommet - Google Patents

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Publication number
JP2006087286A
JP2006087286A JP2005238312A JP2005238312A JP2006087286A JP 2006087286 A JP2006087286 A JP 2006087286A JP 2005238312 A JP2005238312 A JP 2005238312A JP 2005238312 A JP2005238312 A JP 2005238312A JP 2006087286 A JP2006087286 A JP 2006087286A
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Prior art keywords
grommet
rib
hole
thickness
taper
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JP2005238312A
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JP4383396B2 (en
Inventor
Mitsutaka Obara
光貴 小原
Shigeto Minoura
成人 箕浦
Mitsuhiro Yamamura
円博 山村
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Furukawa Electric Co Ltd
Furukawa Automotive Parts Inc
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Furukawa Electric Co Ltd
Furukawa Automotive Parts Inc
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Priority to JP2005238312A priority Critical patent/JP4383396B2/en
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  • Installation Of Indoor Wiring (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grommet capable of easily inserted in a through hole of a vehicle body panel. <P>SOLUTION: The wall thickness of one side constituting ribs, is thinner than that that of the other side. So, a thin-wall side of the rib is easily deformed and collapsed so that the outside diameter of the rib becomes small, allowing the grommet to be easily inserted in the through hole of a vehicle body panel. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明はワイヤハーネスを覆うグロメット に関する。   The present invention relates to a grommet that covers a wire harness.

従来、自動車 のエンジンルームから車室内へ配索されるワイヤハーネスにグロメット が被せられ、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前記グロメット が装着され、貫通穴を通るワイヤハーネスの機械的な保護およびエンジンルーム側から車室への防水、防塵、遮音を図ることが行われている。   Conventionally, a grommet is placed on a wire harness routed from the engine room of an automobile to the vehicle interior, and the grommet is mounted in a through hole of a vehicle body panel that partitions the engine room and the vehicle interior, and the wire harness machine passes through the through hole. It is intended to protect the vehicle from the engine room side to the vehicle compartment, as well as to protect against water, dust and sound.

この種のグロメットとして、種々の形状のものが開発・実用化されているが、その一つとして、車体パネルの貫通穴にグロメット を一方向より押し込むだけで、グロメット の外周に形成された貫通穴係止凹部に前記貫通穴の周縁が係止される所謂ワンモーショングロメット が提供されている（例えば特許文献１）。   Various types of grommets of this type have been developed and put to practical use. One of these grommets is a through-hole formed on the outer periphery of the grommet simply by pushing the grommet into the through-hole of the vehicle body panel from one direction. A so-called one-motion grommet is provided in which the periphery of the through hole is locked to the locking recess (for example, Patent Document 1).

即ち、かかるグロメット１０は、図５に示すように、一端１１から他端１２に渡ってワイヤハーネス２１を覆って内装させるワイヤハーネス挿通孔１３（図６参照）を有し、一端１１側から他端１２側に向けて外径が徐々に拡径するテーパー１４を有するテーパー部１４'を有し、その最大径付近に貫通穴係止凹部１５が形成され、更に前記テーパー部１４'にはテーパー１４の長手方向に沿って複数のリブ１６が形成されている。   That is, as shown in FIG. 5, the grommet 10 has a wire harness insertion hole 13 (see FIG. 6) that covers and covers the wire harness 21 from one end 11 to the other end 12. A tapered portion 14 'having a taper 14 whose outer diameter gradually increases toward the end 12 side, a through-hole locking recess 15 is formed in the vicinity of the maximum diameter, and the tapered portion 14' has a tapered portion. A plurality of ribs 16 are formed along the longitudinal direction of 14.

このリブ１６はグロメット１０の径方向への機械的な強度を確保するためと、貫通穴係止凹部１５に嵌められた車体パネル３１が貫通穴係止凹部１５から抜け出るのを防止する役目を成すものである。
特開２００３−１１１２５０号公報 The rib 16 serves to ensure mechanical strength in the radial direction of the grommet 10 and to prevent the vehicle body panel 31 fitted in the through-hole locking recess 15 from slipping out of the through-hole locking recess 15. Is.
JP 2003-111250 A

しかしながら、前記グロメットは、図６に示すように、リブ１６の一方サイド１６'の肉厚と他方サイド１６''の肉厚とが等しく形成されていた。このため、グロメット１０を車体パネル３１の貫通穴３２に挿入する際、リブ１６が変形し難く、容易にリブ１６の外径を車体パネルの貫通穴よりも小径となるように潰しにくく、容易に挿入することができなかった。   However, as shown in FIG. 6, the thickness of one side 16 ′ of the rib 16 and the thickness of the other side 16 ″ of the grommet were equal. For this reason, when the grommet 10 is inserted into the through hole 32 of the vehicle body panel 31, the rib 16 is not easily deformed, and the outer diameter of the rib 16 is not easily crushed so as to be smaller than the through hole of the vehicle body panel. Could not insert.

本発明は、かかる点に鑑みなされたもので、一端から他端に渡ってワイヤハーネスを通過させるワイヤハーネス挿通孔を有し、前記一端から他端側に向けて外径が徐々に拡径するテーパーを有するテーパー部を有し、その最大径付近に貫通穴係止凹部が形成され、更に前記テーパー部の外周にはテーパーの長手方向に沿って複数のリブが形成されたグロメットにおいて、各リブを構成する一方サイドもしくは他方サイドの肉厚が逆側の肉厚よりも薄く構成されていることを特徴とする。   The present invention has been made in view of this point, and has a wire harness insertion hole through which the wire harness passes from one end to the other end, and the outer diameter gradually increases from the one end toward the other end. In the grommet having a tapered portion having a taper, a through-hole locking concave portion is formed in the vicinity of the maximum diameter, and a plurality of ribs are formed on the outer periphery of the tapered portion along the longitudinal direction of the taper. The thickness of one side or the other side that constitutes is configured to be thinner than the thickness on the opposite side.

本発明は、上記構成によって、グロメットを車体パネルの貫通穴に挿入する際、リブの肉薄のサイドが容易に変形してリブの外径が小径となるように潰れ、グロメットを車体パネルの貫通穴に容易に挿入させることができる。   According to the present invention, when the grommet is inserted into the through hole of the vehicle body panel, the thin side of the rib is easily deformed so that the outer diameter of the rib becomes a small diameter. Can be easily inserted.

本発明の実施形態のグロメットは以下のように構成されている。
グロメットを構成する材料が弾性材料によって構成されていることを特徴とする。
リブが３〜１２条形成されていることを特徴とする。 The grommet of the embodiment of the present invention is configured as follows.
The material constituting the grommet is made of an elastic material.
It is characterized in that 3 to 12 ribs are formed.

以下本発明を図示した実施例によって説明する。
図１乃至図４において、１９は本発明のグロメットを示すものであり、図中において、１１、１２、１３、１４、１４'、１５、１６、１６'、１６''はそれぞれ図５〜図６と同様に、一端、他端、ワイヤハーネス挿通孔、テーパー、テーパー部、貫通穴係止凹部、リブ、一方サイド、他方サイドである。 The present invention will be described below with reference to illustrated embodiments.
1 to 4, reference numeral 19 denotes a grommet according to the present invention. In the figure, 11, 12, 13, 14, 14 ', 15, 16, 16' and 16 '' are respectively shown in FIGS. 6, one end, the other end, a wire harness insertion hole, a taper, a taper portion, a through hole locking recess, a rib, one side, and the other side.

本実施例のグロメット１９は、図５〜図６の従来例に比較して、リブ１６を構成する一方サイド１６'と他方サイド１６''との肉厚が、図１に示すように、両サイド間において一方サイド１６'側の肉厚が薄くなるように形成されている点が異なっている。   The grommet 19 of this embodiment has a thickness of one side 16 ′ and the other side 16 ″ constituting the rib 16 as shown in FIG. The difference is that the thickness of one side 16 'side is reduced between the sides.

即ち、本実施例のグロメット１９は、図１(ロ)に示すように、リブ１６の一方サイド１６'の肉厚がｄ１となっており、他方サイド１６''の肉厚ｄ２よりも肉薄になっている。
このため、グロメット１９を車体パネルの貫通穴に挿入する際、肉薄となっている一方サイド１６'が図４に示すように、リブ１６の外径が点線の形状から実線の形状に容易に変形して、リブ１６の外径が小径となるように潰れ、グロメット１９を容易に車体パネルの貫通穴に挿入させることができる。 That is, in the grommet 19 of the present embodiment, as shown in FIG. 1 (b), the thickness of one side 16 ′ of the rib 16 is d1, and is thinner than the thickness d2 of the other side 16 ″. It has become.
For this reason, when the grommet 19 is inserted into the through hole of the vehicle body panel, the outer side of the rib 16 is easily deformed from the dotted line shape to the solid line shape as shown in FIG. Then, the rib 16 is crushed so that the outer diameter becomes a small diameter, and the grommet 19 can be easily inserted into the through hole of the vehicle body panel.

また、本実施例のグロメット１９は、一端１１側に均一径の外径を持つフラット部１１'と他端１２側に外径が波状に変化するジャバラ部１２'とが形成されている。これにより、グロメット１９を貫通する電線の屈曲に対する影響を緩和させることができる。   Further, the grommet 19 of the present embodiment is formed with a flat portion 11 ′ having a uniform outer diameter on one end 11 side and a bellows portion 12 ′ whose outer diameter changes in a wavy shape on the other end 12 side. Thereby, the influence with respect to the bending of the electric wire which penetrates the grommet 19 can be relieved.

本実施例のグロメット１９はゴム材（ＥＰＣＭ材やＣＲ）などの弾性材料で構成され、比較的容易に外径を変形させることができるようになっている。   The grommet 19 of this embodiment is made of an elastic material such as a rubber material (EPCM material or CR), and can change the outer diameter relatively easily.

本実施例のグロメット１９はリブが８条形成されているが、本発明はこれ以外の条数であっても良く、例えば３〜１２の範囲で適宜変更することができ、この場合であっても同様の効果を得ることができる。   Although the ribs of the grommet 19 of the present embodiment are formed as 8 ribs, the present invention may have other number of ribs, and can be appropriately changed within a range of 3 to 12, for example. The same effect can be obtained.

本実施例のグロメット１９は最小内径が８０ｍｍ、最大外径が１００ｍｍ、肉厚が１．０〜２．０ｍｍ、長手方向の寸法が１５０〜２００ｍｍ程度に形成されている。本発明はこれ以外の寸法であっても同様に適用することができるが、ｄ１≦０．７×ｄ２であることが発明の効果を十分に発揮する上で好ましい。   The grommet 19 of this embodiment has a minimum inner diameter of 80 mm, a maximum outer diameter of 100 mm, a thickness of 1.0 to 2.0 mm, and a longitudinal dimension of about 150 to 200 mm. The present invention can be applied in the same manner even if the dimensions are other than this, but d1 ≦ 0.7 × d2 is preferable in order to sufficiently exhibit the effects of the invention.

なお、本実施例では各リブ１６の同じ側、すなわち一方サイド１６'が肉薄になっている例を示したが、各リブ１６同士で異なる側のサイドがランダムに肉薄になっていてもよい。
ただし、同じサイドが肉薄になっていたほうが、グロメット１９を車体パネルの貫通穴に挿入する際、グロメット１９が肉薄サイドの方向に回転し易くなるので挿入抵抗が少なくて好ましい。 In the present embodiment, an example in which the same side of each rib 16, that is, one side 16 ′ is thin, is shown, but the side on a different side between the ribs 16 may be thin.
However, it is preferable that the same side is thin, because when the grommet 19 is inserted into the through hole of the vehicle body panel, the grommet 19 is easily rotated in the direction of the thin side, so that the insertion resistance is small.

イは本発明の一実施例を示す図２(ロ)のＣ−Ｃ線における断面図、ロは図１(イ)中の丸で囲った部分における拡大断面図。2A is a cross-sectional view taken along the line CC in FIG. 2B, showing an embodiment of the present invention, and FIG. 2B is an enlarged cross-sectional view of a circled portion in FIG. 本発明の一実施例を示すもので、イは正面図、ロは右側面図。1 shows an embodiment of the present invention, in which A is a front view and B is a right side view. 図２(イ)のＢ−Ｂ線における断面図。Sectional drawing in the BB line of FIG. 本発明の一実施例におけるグロメット挿入時の要部拡大断面図。The principal part expanded sectional view at the time of grommet insertion in one Example of this invention. 従来の一例を示す一部断面側面図。The partial cross section side view which shows an example of the past. 図５の要部断面図。FIG. 6 is a cross-sectional view of the main part of FIG. 5.

符号の説明Explanation of symbols

１１ 一端
１１' フラット部
１２ 他端
１２' ジャバラ部
１３ ワイヤハーネス挿通孔
１４ テーパー
１４' テーパー部
１５ 貫通穴係止凹部
１６ リブ
１６' 一方サイド
１６'' 他方サイド
１９ グロメット
11 One end 11 ′ Flat portion 12 Other end 12 ′ Bellows portion 13 Wire harness insertion hole 14 Taper 14 ′ Taper portion 15 Through hole locking recess 16 Rib 16 ′ One side 16 ″ The other side 19 Grommet

Claims (4)

一端から他端に渡ってワイヤハーネスを通過させるワイヤハーネス挿通孔を有し、前記一端から他端側に向けて外径が徐々に拡径するテーパーを有するテーパー部を有し、その最大径付近に貫通穴係止凹部が形成され、更に前記テーパー部の外周にはテーパーの長手方向に沿って複数のリブが形成されたグロメットにおいて、各リブを構成する一方サイドもしくは他方サイドの肉厚が逆側の肉厚よりも薄く構成されていることを特徴とするグロメット。   It has a wire harness insertion hole that allows the wire harness to pass from one end to the other end, and has a taper portion with a taper whose outer diameter gradually expands from the one end toward the other end, and near its maximum diameter In the grommet in which a through-hole locking recess is formed in the grommet and a plurality of ribs are formed on the outer circumference of the tapered portion along the longitudinal direction of the taper, the thickness of one side or the other side constituting each rib is reversed. Grommet characterized by being made thinner than the wall thickness on the side. 弾性材料によって構成されていることを特徴とする請求項１に記載のグロメット。   The grommet according to claim 1, wherein the grommet is made of an elastic material. リブが３〜１２条形成されていることを特徴とする請求項１又は請求項２に記載のグロメット。   The grommet according to claim 1 or 2, wherein 3 to 12 ribs are formed. 前記各リブを構成する一方サイドもしくは他方サイドの同一サイドの圧肉が逆側の肉厚よりも薄く構成されていることを特徴とする請求項１〜請求項３のいずれか１項に記載のグロメット。
The thickness of the same side of the one side or the other side constituting each rib is configured to be thinner than the thickness on the opposite side. Grommet.
JP2005238312A 2004-08-20 2005-08-19 Grommet Active JP4383396B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015015869A (en) * 2013-07-08 2015-01-22 住友電装株式会社 Grommet
JP2016162520A (en) * 2015-02-27 2016-09-05 古河電気工業株式会社 Grommet
JP2016178720A (en) * 2015-03-18 2016-10-06 矢崎総業株式会社 Grommet
JP2021129477A (en) * 2020-02-17 2021-09-02 矢崎総業株式会社 Grommet and wire harness

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015015869A (en) * 2013-07-08 2015-01-22 住友電装株式会社 Grommet
JP2016162520A (en) * 2015-02-27 2016-09-05 古河電気工業株式会社 Grommet
JP2016178720A (en) * 2015-03-18 2016-10-06 矢崎総業株式会社 Grommet
JP2021129477A (en) * 2020-02-17 2021-09-02 矢崎総業株式会社 Grommet and wire harness
JP7077347B2 (en) 2020-02-17 2022-05-30 矢崎総業株式会社 Grommets and wire harnesses

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