JP5403668B2 - Grommet - Google Patents

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JP5403668B2
JP5403668B2 JP2009098232A JP2009098232A JP5403668B2 JP 5403668 B2 JP5403668 B2 JP 5403668B2 JP 2009098232 A JP2009098232 A JP 2009098232A JP 2009098232 A JP2009098232 A JP 2009098232A JP 5403668 B2 JP5403668 B2 JP 5403668B2
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flange
portions
grommet
fitting portion
pair
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JP2010251063A (en
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弘尚 南浦
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キャタピラー エス エー アール エル
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Description

本発明は、取付穴に嵌合するグロメットに関する。   The present invention relates to a grommet that fits into a mounting hole.

例えば、図６に示される油圧ショベルなどの作業機械１は、図７に示されるように多数の電気配線および油圧配管２を有しており、旋回フレーム３上の取付板４などに穿設された取付穴を通して配線または配管をする必要がある。   For example, a work machine 1 such as a hydraulic excavator shown in FIG. 6 has a large number of electrical wires and hydraulic pipes 2 as shown in FIG. Wiring or piping must be done through the mounting holes.

このとき、電気配線または油圧配管２が取付穴と接触して損傷しないように、図７および図８に示されるようなゴム製のグロメット５を取付穴に嵌着している。   At this time, a rubber grommet 5 as shown in FIGS. 7 and 8 is fitted into the mounting hole so that the electric wiring or the hydraulic piping 2 does not come into contact with the mounting hole and is damaged.

図８に示されるように、グロメット５には、取付穴に嵌合する円筒状の嵌合部６と、この嵌合部６の一側端および他側端から径方向で外側に向かって一体成型された１対のフランジ状部７とを具備し、これらのフランジ状部７間に、取付穴の厚みとほぼ同一の凹溝８が形成されている。   As shown in FIG. 8, the grommet 5 is integrally formed with a cylindrical fitting portion 6 that fits into the mounting hole, and radially outward from one end and the other end of the fitting portion 6. A pair of molded flange-like portions 7 is provided, and a concave groove 8 having substantially the same thickness as the mounting hole is formed between the flange-like portions 7.

一方、取付穴に嵌合する嵌合部を蛇腹状に形成することで、取付穴の厚み変化に対応できるようにしたグロメットがある（例えば、特許文献１参照）。   On the other hand, there is a grommet that can cope with a change in the thickness of the mounting hole by forming a fitting portion that fits into the mounting hole in a bellows shape (for example, see Patent Document 1).

特開２００６−１２０４１３号公報（第４頁、図２）JP 2006-120413 A (page 4, FIG. 2)

蛇腹状に形成した嵌合部が伸び縮みするので、取付穴の複数の厚みに対応できるが、蛇腹状の嵌合部は、形状が複雑であるため、成型が容易でないとともに耐久性も十分でない。   The bellows-like fitting part expands and contracts, so it can accommodate multiple thicknesses of mounting holes, but the bellows-like fitting part is not easy to mold and not durable enough because of its complicated shape .

本発明は、このような点に鑑みなされたもので、単純な形状でありながら取付穴の厚みの変化に対応できるグロメットを提供することを目的とする。   This invention is made | formed in view of such a point, and it aims at providing the grommet which can respond to the change of the thickness of an attachment hole, although it is a simple shape.

本発明は、取付穴に嵌合する円筒状の嵌合部と、嵌合部の一側端および他側端から径方向で外側に向かって一体成型された１対のフランジ状部と、嵌合部と各フランジ状部との内角部にそれぞれ形成された凹部とを具備し、１対のフランジ状部間の間隔は、嵌合部の外周面から径方向で外側に向かって漸次狭小状態に形成され、各フランジ状部は、各凹部と対応する外側面にそれぞれ形成された平面部と、各平面部より径方向の外側にそれぞれ形成されたテーパ面部とを備えたグロメットである。 The present invention includes a cylindrical fitting portion that fits into a mounting hole, a pair of flange-like portions that are integrally molded radially outward from one end and the other end of the fitting portion , ; and a recess formed respectively in the inner angle portion between the engaging portion and the flange portion, the spacing between the flange portion in the pair, gradually narrowing state outward in the radial direction from the outer peripheral surface of the fitting portion Each flange-like part is a grommet including a flat part formed on the outer surface corresponding to each concave part and a tapered surface part formed on the outer side in the radial direction from each flat part .

本発明によれば、取付穴に嵌合する円筒状の嵌合部の一側端および他側端から径方向で外側に向かって１対のフランジ状部を一体成型した単純な形状でありながら、１対のフランジ状部の間を、嵌合部の外周面から径方向で外側に向かって漸次狭小状態に形成したので、１対のフランジ状部間に設けられた間隔の最大幅から最小幅の範囲内で、取付穴の厚みの変化に対応でき、１つのグロメットを複数の板厚の取付穴に適用できる。その際、嵌合部とフランジ状部との内角部に凹部を形成することで、嵌合部に対するフランジ状部の変形が容易になり、取付穴の厚みの変化に容易に対応できるとともに、この凹部で張力を吸収して、フランジ状部の間隔が広がったときに内角でひび割れが生ずるおそれを防止できる。さらに、各凹部と対応するフランジ状部の外側面に平面部がそれぞれ形成され、各平面部より径方向の外側にテーパ面部がそれぞれ形成されたので、フランジ状部の厚み増加を防止できるとともに、板厚の大きな取付板を挟んだときにフランジ状部が平面部より外側に大きく膨出することを抑制できる。 According to the present invention, the cylindrical fitting portion that fits into the mounting hole has a simple shape in which a pair of flange-like portions are integrally molded from the one end and the other end in the radial direction toward the outside. Since the gap between the pair of flange-shaped portions is gradually narrowed radially outward from the outer peripheral surface of the fitting portion, the maximum width of the gap provided between the pair of flange-shaped portions is maximized. Within a small range, it is possible to cope with changes in the thickness of the mounting hole, and one grommet can be applied to mounting holes having a plurality of plate thicknesses. At that time, by forming a recess in the inner corner of the fitting portion and the flange-like portion, the flange-like portion can be easily deformed with respect to the fitting portion, and the change in the thickness of the mounting hole can be easily handled. When the recess absorbs the tension, the possibility of cracking at the inner corner when the interval between the flange-like portions is widened can be prevented. Furthermore, since the flat surface portion is formed on the outer surface of the flange-shaped portion corresponding to each concave portion, and the tapered surface portion is formed on the outer side in the radial direction from each flat surface portion, it is possible to prevent an increase in the thickness of the flange-shaped portion, When the attachment plate having a large plate thickness is sandwiched, the flange-like portion can be prevented from greatly bulging outward from the plane portion.

本発明に係るグロメットの一実施の形態を示す断面図である。It is sectional drawing which shows one Embodiment of the grommet which concerns on this invention. 同上グロメットの側面図である。It is a side view of a grommet same as the above. 同上グロメットの拡大断面図である。It is an expanded sectional view of a grommet same as the above. 同上グロメットの装着例を示す斜視図である。It is a perspective view which shows the example of mounting | wearing with a grommet same as the above. 同上グロメットの作用を示す拡大断面図である。It is an expanded sectional view which shows the effect | action of a grommet same as the above. 作業機械の側面図である。It is a side view of a working machine. 従来のグロメットを作業機械に用いた例を示す側面図である。It is a side view which shows the example which used the conventional grommet for the working machine. 従来のグロメットを示す一部破断の正面図である。It is a partially broken front view which shows the conventional grommet.

以下、本発明を、図１乃至図５に示された一実施の形態に基いて詳細に説明する。   Hereinafter, the present invention will be described in detail based on one embodiment shown in FIGS.

図１および図２に示されるように、グロメット11は、取付穴に嵌合する円筒状の嵌合部12と、この嵌合部12の一側端および他側端から径方向で外側に向かって一体成型された１対のフランジ状部13，13とを具備し、これらがゴムなどにより一体に成型されている。   As shown in FIGS. 1 and 2, the grommet 11 includes a cylindrical fitting portion 12 that fits into the mounting hole, and radially outward from one end and the other end of the fitting portion 12. And a pair of flange-like portions 13 and 13 integrally molded, and these are integrally molded with rubber or the like.

１対のフランジ状部13，13間の間隔は、嵌合部12の外周面から径方向で外側に向かって漸次狭小状態に形成されている。このため、１対のフランジ状部13，13間には、台形状の凹溝空間14が形成されている。   The space between the pair of flange-like portions 13 and 13 is formed so as to be gradually narrowed radially outward from the outer peripheral surface of the fitting portion 12. For this reason, a trapezoidal concave groove space 14 is formed between the pair of flange-like portions 13 and 13.

図３に示されるように、嵌合部12とフランジ状部13，13との内角部には半円断面形状の凹部15，15が全周にわたって形成され、これらの凹部15，15により、フランジ状部13，13の内面側には相対的に凸面部16，16が形成されている。この凸面部16，16は、板厚の厚い取付板に対する密着性を高める。   As shown in FIG. 3, recesses 15 and 15 having a semicircular cross-sectional shape are formed on the inner corners of the fitting portion 12 and the flange-like portions 13 and 13 over the entire circumference. Convex parts 16, 16 are relatively formed on the inner surface side of the shaped parts 13, 13. The convex surface portions 16 and 16 enhance adhesion to a thick mounting plate.

一方、凹部15，15と対応するフランジ状部13，13の外側面には平面部17，17が形成され、これらの平面部17，17より径方向の外側にはテーパ面部18，18が形成されている。   On the other hand, flat portions 17, 17 are formed on the outer surfaces of the flange-shaped portions 13, 13 corresponding to the recesses 15, 15, and tapered surface portions 18, 18 are formed on the outer sides in the radial direction from these flat portions 17, 17. Has been.

フランジ状部13，13の付根部は、これらの凹部15，15と平面部17，17とにより挟まれた箇所で、その肉厚が薄くなっている。このため、嵌合部12に対するフランジ状部13，13の変形が容易になっており、フランジ状部13，13が外側へ広がったときに、その付根部にひびが入りにくい。   The base portions of the flange-like portions 13 and 13 are thinned at portions sandwiched between the concave portions 15 and 15 and the flat portions 17 and 17. For this reason, the deformation of the flange-like portions 13 and 13 with respect to the fitting portion 12 is easy, and when the flange-like portions 13 and 13 spread outward, the root portions are hardly cracked.

次に、このグロメットの装着例および作用効果を説明する。   Next, a mounting example and operational effects of this grommet will be described.

図４および図５に示されるように、厚みの異なる複数の取付板21，22に同一径の取付穴23が穿設されている場合は、これらの各取付板21，22の取付穴23に対して同一サイズのグロメット11を嵌着する。   As shown in FIGS. 4 and 5, when the mounting holes 23 having the same diameter are formed in the plurality of mounting plates 21 and 22 having different thicknesses, the mounting holes 23 of these mounting plates 21 and 22 are formed in the mounting holes 23. On the other hand, the same size grommet 11 is fitted.

この場合、図５に示されるように、厚い取付板21に対しては１対のフランジ状部13，13が外側へ変形するようにして内面の凸面部16，16が取付板21の穴周縁面に全体的に密着するように嵌着し、また、薄い取付板22に対しては１対のフランジ状部13，13の外周側の内面が密着するように嵌着する。   In this case, as shown in FIG. 5, for the thick mounting plate 21, the pair of flange-shaped portions 13, 13 are deformed outward so that the convex portions 16, 16 on the inner surface are the peripheral edges of the mounting plate 21. It fits so that it may adhere to the whole surface, and it fits so that the inner surface of the outer peripheral side of a pair of flange-like parts 13 and 13 may stick to thin attachment plate 22.

この実施の形態によれば、取付穴23に嵌合する円筒状の嵌合部12の一側端および他側端から径方向で外側に向かって１対のフランジ状部13，13を一体成型した単純な形状でありながら、１対のフランジ状部13，13間の間隔を、嵌合部12の外周面から径方向で外側に向かって漸次狭小状態に形成したので、１対のフランジ状部13，13間に設けられた間隔の最大幅から最小幅の範囲内で、取付穴23の厚みの変化に対応でき、１つのグロメット11を複数の板厚の取付穴23に適用できる。これにより、グロメット種類数の削減およびコストの削減を図れる。   According to this embodiment, a pair of flange-like portions 13 and 13 are integrally molded from the one end and the other end of the cylindrical fitting portion 12 fitted in the mounting hole 23 in the radial direction. The gap between the pair of flange-like portions 13 and 13 is formed in a gradually narrowing state radially outward from the outer peripheral surface of the fitting portion 12 while being a simple shape. It is possible to cope with a change in the thickness of the mounting hole 23 within the range from the maximum width to the minimum width of the interval provided between the portions 13, 13, and one grommet 11 can be applied to the mounting holes 23 having a plurality of plate thicknesses. As a result, the number of types of grommets and the cost can be reduced.

また、嵌合部12とフランジ状部13，13との内角部に半円断面形状の凹部15，15を形成することで、嵌合部12に対するフランジ状部13，13の変形が容易になり、取付穴23の厚みの変化に容易に対応できるとともに、この凹部15，15でゴム部材に作用する張力を吸収して、フランジ状部13，13の間隔が広がったときに内角部でひび割れが生ずるおそれを防止できる。   Further, by forming the concave portions 15 and 15 having a semicircular cross section at the inner corners of the fitting portion 12 and the flange-like portions 13 and 13, the flange-like portions 13 and 13 can be easily deformed with respect to the fitting portion 12. In addition to being able to easily cope with changes in the thickness of the mounting hole 23, the recesses 15 and 15 absorb the tension acting on the rubber member, and when the gap between the flange-like parts 13 and 13 is widened, cracks are generated at the inner corners. The risk of occurrence can be prevented.

外側にテーパ面部18，18を形成しているので、フランジ状部13，13の厚み増加を防止できるとともに、板厚の大きな取付板を挟んだときにフランジ状部13，13が平面部17，17より外側に大きく膨出することを抑制できる。   Since the tapered surface portions 18 and 18 are formed on the outer side, an increase in the thickness of the flange-shaped portions 13 and 13 can be prevented, and the flange-shaped portions 13 and 13 are flat when the mounting plate having a large thickness is sandwiched. It is possible to suppress bulging outward from 17 greatly.

なお、１対のフランジ状部13，13のうち、一方のみを嵌合部12に対して傾斜状に設け、他方は嵌合部12に対して直角に形成してもよい。   Note that only one of the pair of flange-like portions 13 and 13 may be provided to be inclined with respect to the fitting portion 12, and the other may be formed at a right angle to the fitting portion 12.

本発明は、作業機械だけでなく、種々の構造物の穴に適用できる。   The present invention can be applied not only to work machines but also to holes in various structures.

11 グロメット
12 嵌合部
13 フランジ状部
15 凹部
17 平面部
18 テーパ面部
23 取付穴 11 Grommet
12 Mating part
13 Flange-shaped part
15 recess
17 plane part
18 taper surface
23 Mounting hole

Claims (1)

取付穴に嵌合する円筒状の嵌合部と、
嵌合部の一側端および他側端から径方向で外側に向かって一体成型された１対のフランジ状部と、
嵌合部と各フランジ状部との内角部にそれぞれ形成された凹部とを具備し、
１対のフランジ状部間の間隔は、嵌合部の外周面から径方向で外側に向かって漸次狭小状態に形成され、
各フランジ状部は、
各凹部と対応する外側面にそれぞれ形成された平面部と、
各平面部より径方向の外側にそれぞれ形成されたテーパ面部とを備えた
ことを特徴とするグロメット。 A cylindrical fitting portion that fits into the mounting hole;
A pair of flange-shaped portions integrally molded outward from the one end and the other end of the fitting portion in the radial direction ;
Comprising recesses formed respectively in the inner corners of the fitting part and each flange-like part ;
The gap between the pair of flange-shaped portions is formed in a gradually narrowing state radially outward from the outer peripheral surface of the fitting portion ,
Each flange-shaped part
A planar portion formed on each outer surface corresponding to each recess;
A grommet comprising a tapered surface portion formed on the outer side in the radial direction from each flat surface portion .
JP2009098232A 2009-04-14 2009-04-14 Grommet Expired - Fee Related JP5403668B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009098232A JP5403668B2 (en) 2009-04-14 2009-04-14 Grommet

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Application Number Priority Date Filing Date Title
JP2009098232A JP5403668B2 (en) 2009-04-14 2009-04-14 Grommet

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JP2010251063A JP2010251063A (en) 2010-11-04
JP5403668B2 true JP5403668B2 (en) 2014-01-29

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0281988U (en) * 1988-12-13 1990-06-25
JPH09117039A (en) * 1995-10-17 1997-05-02 Sumitomo Wiring Syst Ltd Grommet and fitting structure thereof to wire harness
JP3362383B2 (en) * 1996-02-08 2003-01-07 矢崎総業株式会社 Grommet
JPH1092244A (en) * 1996-09-18 1998-04-10 Sumitomo Wiring Syst Ltd Grommet

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