JP4490156B2 - Grommet - Google Patents

Grommet Download PDF

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Publication number
JP4490156B2
JP4490156B2 JP2004115561A JP2004115561A JP4490156B2 JP 4490156 B2 JP4490156 B2 JP 4490156B2 JP 2004115561 A JP2004115561 A JP 2004115561A JP 2004115561 A JP2004115561 A JP 2004115561A JP 4490156 B2 JP4490156 B2 JP 4490156B2
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grommet
hole
pipe
fitting
present
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Expired - Fee Related
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JP2005302478A (en
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邦明 平松
準弥 鵜飼
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Daiwa Kasei Industry Co Ltd
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Daiwa Kasei Industry Co Ltd
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Description

本発明は、自動車の車体フレームに配管または配線を貫通させている貫通孔を嵌合して塞ぐグロメットに関するものである。   The present invention relates to a grommet that fits and closes a through-hole through which a pipe or a wiring penetrates a body frame of an automobile.

従来より、車体フレーム20に配管32を貫通させたい場合には、図4に記すように前記車体フレーム20に配管32の貫通孔22を形成し配管32を貫通させていた。そして前記貫通孔22には配管32の貫通後に生ずる貫通孔22の開口部を塞ぐために、鉄板製のグロメット10に形成の挿通孔12cに配管32を挿入し、前記グロメット10の下面(車体フレーム20と接する側の面)の周縁部をブチル剤12aによって接着し前記開口部を塞いでいた。   Conventionally, when it is desired to pass the pipe 32 through the vehicle body frame 20, as shown in FIG. 4, the through hole 22 of the pipe 32 is formed in the vehicle body frame 20 to pass through the pipe 32. Then, in order to close the opening of the through hole 22 generated after the pipe 32 passes through the through hole 22, the pipe 32 is inserted into the insertion hole 12 c formed in the iron plate grommet 10, and the bottom surface of the grommet 10 (the vehicle body frame 20). The peripheral edge of the surface on the side in contact with the surface was adhered with a butyl agent 12a to close the opening.

なお、上記に説明したグロメットは、従来より一般的であるので、あえて先行技術文献を記載しない。   In addition, since the grommet demonstrated above is more common than before, a prior art document is not described intentionally.

従来のグロメットは、鉄板製であるため重量があり取付作業をする作業員にとって負担であった。また前記グロメットはブチル剤を塗り車体フレームと接着させ固定していたため取付作業をする作業員にとって手間であった。
本発明は、このような点に鑑みて創案されたものであり、取付の作業性を向上することができるグロメットを提供することを課題とする。
Since conventional grommets are made of iron plates, they are heavy and burdensome for workers who perform installation work. Further, the grommet was coated with a butyl agent and adhered to the vehicle body frame, so that it was troublesome for the worker who performed the installation work.
The present invention has been made in view of such a point, and an object of the present invention is to provide a grommet capable of improving the workability of mounting.

上記課題を解決するための手段として、請求項1に記載の配管用グロメットは、車体フレームに貫通させている配管を挿通孔へ貫通させて前記車体フレームの貫通孔を塞ぐ配管用グロメットであり、剛性のある合成樹脂(例えば、ポリプロピレン等)で成形してあるので重量が軽く、取付の作業性を向上できる。また、請求項1に記載の配管用グロメットは、塞体と嵌合体とは一体成形されているため、簡便に製造することができる。また、請求項1に記載の配管用グロメットは、塞体の周縁部の下面には柔軟性のある合成樹脂(例えば、エラストマ等)で成形してあるリップ状のシール部材16aを備えてあるので、配管用グロメットと車体フレーム間での密着性が増し、双方向からの防水性及び防塵性が高くなる。
As a means for solving the above-mentioned problem, the piping grommet according to claim 1 is a piping grommet that closes the through hole of the vehicle body frame by penetrating the pipe that penetrates the vehicle body frame to the insertion hole, Since it is formed of a rigid synthetic resin (for example, polypropylene), the weight is light and the mounting workability can be improved. Moreover, the piping grommet according to claim 1 can be easily manufactured because the closing body and the fitting body are integrally formed. The piping grommet according to claim 1 is provided with a lip-shaped sealing member 16a formed of a flexible synthetic resin (e.g., elastomer) on the lower surface of the peripheral edge of the closing body. Adhesion between the piping grommet and the vehicle body frame is increased, and the waterproofness and dustproofness from both directions are increased.

本発明の実施の形態を図面を用いて説明する。なお従来例と同一作用の部材には同一符号を附し説明を省略する。図1は、本発明に係る車両1の概略斜視図である。前記車両1の座席フレーム20aの上には後部座席42が設けてある。また前記座席フレーム20aと底フレーム20bにて形成されるキャビティ24には、燃料タンク30が設けてある。
そして前記燃料タンク30に貯蔵された燃料は、前記燃料タンク30に内蔵の燃料ポンプ34によって、配管32を介してエンジンへ40供給されている。なお、燃料タンク30は車両1の後部に設けてあり、一方エンジン40は車両1の前部に設けてあるために、前記配管32は座席フレーム20aを貫通して前記エンジン40に達する構成となる。
Embodiments of the present invention will be described with reference to the drawings. Members having the same functions as those of the conventional example are denoted by the same reference numerals and description thereof is omitted. FIG. 1 is a schematic perspective view of a vehicle 1 according to the present invention. A rear seat 42 is provided on the seat frame 20 a of the vehicle 1. A fuel tank 30 is provided in the cavity 24 formed by the seat frame 20a and the bottom frame 20b.
The fuel stored in the fuel tank 30 is supplied 40 to the engine via a pipe 32 by a fuel pump 34 built in the fuel tank 30. The fuel tank 30 is provided at the rear portion of the vehicle 1, while the engine 40 is provided at the front portion of the vehicle 1, so that the piping 32 reaches the engine 40 through the seat frame 20 a. .

図2は、本発明のグロメット10を説明する斜視図であり、座席フレーム20aに取り付ける前(嵌合する前)の状態を示す。前記グロメット10は楕円板状の塞体12と前記塞体12の下面(座席フレーム20aと接する側の面)に垂下する円筒状の嵌合体14との一体成形で構成してある。また前記塞体12には前記配管32を挿通する挿通孔12cが設けてあり、前記挿通孔12cの周囲部は円筒状のシール部材16b(図2では表記されていない)が設けてある。また前記シール部材16bの内径を前記配管32の外形よりやや小さくし、配管32を挿入時のシール性を向上させている。また前記シール部材16bの内周面は、例えば上方向へテーパ状(図2では表記されていないが、上より下が幅広となるテーパ状)に形成してあり、配管32を挿入し易い形状としている。
また前記塞体12の周縁部には下向きに傾斜する傾斜部12bが設けてあり、前記傾斜部12bの下面には全周にわたりハ字形状のシール部材16a、即ちリップ形状のシール部材16aが設けてある。そして、このシール部材16aはハ字形状に広がると吸盤作用により高いシール性を備えている。
FIG. 2 is a perspective view for explaining the grommet 10 of the present invention, and shows a state before being attached to the seat frame 20a (before being fitted). The grommet 10 is formed by integral molding of an oval plate-like closing body 12 and a cylindrical fitting body 14 depending on the lower surface of the closing body 12 (the surface in contact with the seat frame 20a). Further, the closing body 12 is provided with an insertion hole 12c through which the pipe 32 is inserted, and a cylindrical seal member 16b (not shown in FIG. 2) is provided around the insertion hole 12c. Further, the inner diameter of the seal member 16b is made slightly smaller than the outer shape of the pipe 32 to improve the sealing performance when the pipe 32 is inserted. Further, the inner peripheral surface of the seal member 16b is, for example, formed in an upward taper shape (not shown in FIG. 2, but a taper shape in which the lower side is wider than the upper side), and the shape into which the pipe 32 can be easily inserted. It is said.
Further, an inclined portion 12b inclined downward is provided on the peripheral edge of the closing body 12, and a C-shaped seal member 16a, that is, a lip-shaped seal member 16a is provided on the lower surface of the inclined portion 12b. It is. And when this seal member 16a spreads in a letter C shape, it has a high sealing performance due to the sucker action.

また前記嵌合体14の側面には複数個(例えば、6個)の係止爪14bが設けてある。この係止爪14bは前記側面を逆U字状に切り欠いて形成し、前記嵌合体14の下端部から外方向へ湾曲した状態で張り出すように貫通孔22の孔径に対して突出して形成してある。そして、前記係止爪14bは後述する合成樹脂で形成してあるため、前記嵌合体14に対して弾性作用により可動可能、即ち弾性変形する可撓性を備えている。また前記係止爪14bの張り出しにて生ずる上面から前記塞体12の下面までの距離(長さL)は、前記貫通孔22の高さ(高さH)と一致する。また前記塞体12及び前記嵌合体14はポリプロピレン(PP)などの剛性のある合成樹脂で一体に成形されており、前記各シール部材16a、16bはエラストマ樹脂などの柔軟性のある合成樹脂で成形されている。   A plurality of (for example, six) locking claws 14 b are provided on the side surface of the fitting body 14. The locking claw 14b is formed by cutting out the side surface in an inverted U shape, and protruding from the hole diameter of the through hole 22 so as to protrude from the lower end of the fitting body 14 in an outwardly curved state. It is. And since the said latching claw 14b is formed with the synthetic resin mentioned later, it has the flexibility which can be moved by the elastic action with respect to the said fitting body 14, ie, is elastically deformed. Further, the distance (length L) from the upper surface to the lower surface of the closing body 12 generated by the overhanging of the locking claws 14b coincides with the height (height H) of the through hole 22. Further, the closing body 12 and the fitting body 14 are integrally formed of a rigid synthetic resin such as polypropylene (PP), and the sealing members 16a and 16b are formed of a flexible synthetic resin such as an elastomer resin. Has been.

図3は、本発明のグロメット10の使用状態を説明する断面図であり、図3(A)は嵌合前、図3(B)は嵌合中、図3(C)は嵌合後の状態を示す。
図3(A)に記すように、グロメット10を貫通孔22の上方向から配管32に貫通させながら嵌合体14を貫通孔22に嵌合させていく。すると図3(B)に記すように、グロメット10の係止爪14bは貫通孔22の孔径に対して突出しているために張り出した湾曲面が貫通孔22の内周面によって弾性変形により中心方向へ押圧され押し込まれていく。
FIG. 3 is a cross-sectional view for explaining the state of use of the grommet 10 of the present invention. FIG. 3 (A) is before fitting, FIG. 3 (B) is during fitting, and FIG. 3 (C) is after fitting. Indicates the state.
As shown in FIG. 3A, the fitting body 14 is fitted into the through hole 22 while the grommet 10 is passed through the pipe 32 from above the through hole 22. Then, as shown in FIG. 3B, the locking claw 14 b of the grommet 10 protrudes with respect to the hole diameter of the through hole 22, so that the protruding curved surface is elastically deformed by the inner peripheral surface of the through hole 22 in the center direction. It is pushed and pushed into.

そして図3(C)に記すように、塞体12の下面が車体フレーム20の上面と接するまで嵌合体14が貫通孔22へ嵌合されると、グロメット10の係止爪14bの張り出した湾曲面が貫通孔22の内周面によって押圧されなくなり、係止爪14bは弾性変形により嵌合前の張り出し状態に戻る。このようにグロメット10の嵌合体14が車体フレーム20の貫通孔22に嵌合されると、車体フレーム20はグロメット10の塞体12と嵌合体14の係止爪14bによって挟み込まれて、グロメット10は車体フレーム20と容易に係合して外れない。またこの嵌合状態になるとシール部材16aは座席フレーム20aの上面(嵌合体14を座席フレーム20aに挿通する側の面)に押圧されハ字形状に広がり前記座席フレーム20aの上面に対して吸盤作用により密着するので、その箇所からの漏洩防止となる。   As shown in FIG. 3C, when the fitting body 14 is fitted into the through hole 22 until the lower surface of the closing body 12 comes into contact with the upper surface of the vehicle body frame 20, the protruding curve of the locking claw 14b of the grommet 10 is obtained. The surface is no longer pressed by the inner peripheral surface of the through hole 22, and the locking claw 14b returns to the overhanging state before fitting by elastic deformation. Thus, when the fitting body 14 of the grommet 10 is fitted into the through hole 22 of the vehicle body frame 20, the vehicle body frame 20 is sandwiched between the closing body 12 of the grommet 10 and the locking claws 14 b of the fitting body 14. Is easily engaged with the body frame 20 and cannot be removed. In this fitted state, the seal member 16a is pressed by the upper surface of the seat frame 20a (the surface on the side where the fitting body 14 is inserted into the seat frame 20a) and spreads in a letter C shape to suck the upper surface of the seat frame 20a. Since it adheres more closely, it will prevent leakage from that location.

また前記嵌合体14は前記貫通孔22に容易に嵌り合う寸法に設定されており、且つ前記各係止爪14bが個々に独立していて撓みやすいことから、前記貫通孔22に対して前記嵌合体14を軽い力で挿入することができる。また各係止爪14bも剛性のある合成樹脂であるために、上述したように嵌合し係合すると節度感が得られると共に座席フレーム20aに対するグロメット10の保持力が充分に確保される。また前記各シール部材16a、16bは柔軟であるために密着性が良い。また前記シール部材16aは、リップ形状であるために双方向(座席フレーム20aの上面、下面の両方向)からの防水性及び防塵性が高い。   In addition, the fitting body 14 is set to a size that fits easily into the through hole 22, and each of the locking claws 14 b is independent and easy to bend. The united body 14 can be inserted with a light force. Further, since each locking claw 14b is also a rigid synthetic resin, a feeling of moderation can be obtained when fitted and engaged as described above, and a sufficient holding force of the grommet 10 against the seat frame 20a is ensured. Moreover, since each said sealing member 16a, 16b is flexible, adhesiveness is good. Further, since the seal member 16a has a lip shape, it has high waterproof and dustproof properties from both directions (both directions of the upper surface and the lower surface of the seat frame 20a).

上述した内容は、あくまでも本発明の一実施の形態に関するものであって、本発明が上記内容に限定されることを意味するものではない。例えば、本実施の形態では、嵌合体14の側面に6個の係止爪14bを設けた例を説明したが、これに限定されるものでなく、4個でも8個でもよい。
また本発明の実施の形態では、塞体12が楕円状である例を説明したが、これに限定されるものでなく、例えば塞体12は円状または多角形状であっても構わない。
また本発明の実施の形態では、燃料タンク30からエンジン40へ供給される配管32に適用する構成を例に説明したが、これに限定されるものでなく、燃料タンク30の残燃料レベルを検出する燃料レベルセンサの信号線(図示しない)に適用する構成でも構わない。
The contents described above are only related to one embodiment of the present invention, and do not mean that the present invention is limited to the above contents. For example, in the present embodiment, the example in which the six locking claws 14b are provided on the side surface of the fitting body 14 has been described. However, the present invention is not limited to this, and may be four or eight.
In the embodiment of the present invention, the example in which the block 12 is elliptical has been described. However, the present invention is not limited to this. For example, the block 12 may be circular or polygonal.
In the embodiment of the present invention, the configuration applied to the pipe 32 supplied from the fuel tank 30 to the engine 40 has been described as an example. However, the present invention is not limited to this, and the remaining fuel level in the fuel tank 30 is detected. It may be applied to a signal line (not shown) of the fuel level sensor.

本発明に係る車両1の概略斜視図である。1 is a schematic perspective view of a vehicle 1 according to the present invention. 本発明のグロメット10を説明する斜視図である。It is a perspective view explaining the grommet 10 of this invention. 本発明のグロメット10の使用状態を説明する断面図であり、(A)は、嵌合前の状態、(B)は、嵌合中の状態、(C)は、嵌合後の状態を示す。It is sectional drawing explaining the use condition of the grommet 10 of this invention, (A) is the state before fitting, (B) is the state during fitting, (C) shows the state after fitting. . 従来のグロメット10を説明する斜視図である。It is a perspective view explaining the conventional grommet 10. FIG.

符号の説明Explanation of symbols

10 グロメット
12 塞体
12c 挿通孔
14 嵌合体
14b 係止爪
16a、16b シール部材
20 車体フレーム
22 貫通孔
32 配管
DESCRIPTION OF SYMBOLS 10 Grommet 12 Blocking body 12c Insertion hole 14 Fitting body 14b Locking claw 16a, 16b Seal member 20 Body frame 22 Through-hole 32 Piping

Claims (1)

挿通孔が形成されている板状の塞体と、この塞体の下面に垂下する円筒状の嵌合体とから剛性のある合成樹脂で一体成形されており、車体フレームに貫通させている配管を挿通孔へ貫通させて車体フレームの貫通孔を塞ぐ配管用グロメットであって、
塞体の周縁部の下面には柔軟性のある合成樹脂で成形してあるハ字形状のシール部材を備えている、グロメット。
A pipe-shaped block that has an insertion hole and a cylindrical fitting that hangs down from the bottom of the block are integrally molded with a rigid synthetic resin. A piping grommet that penetrates through the insertion hole and closes the through hole of the body frame,
A grommet provided with a C-shaped sealing member formed of a flexible synthetic resin on the lower surface of the peripheral edge of the closing body .
JP2004115561A 2004-04-09 2004-04-09 Grommet Expired - Fee Related JP4490156B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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JP2005302478A JP2005302478A (en) 2005-10-27
JP4490156B2 true JP4490156B2 (en) 2010-06-23

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103166153A (en) * 2011-12-09 2013-06-19 海洋王照明科技股份有限公司 Wire bushing

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6778517B2 (en) * 2016-06-24 2020-11-04 矢崎総業株式会社 Grommet
JP7354870B2 (en) * 2020-02-18 2023-10-03 住友電装株式会社 grommet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103166153A (en) * 2011-12-09 2013-06-19 海洋王照明科技股份有限公司 Wire bushing

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