JPH11155222A - Grommet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grommet which is able to maintain waterproofing property, even when a linear body, such as wire harness, etc., is bent at an acute angle. SOLUTION: A grommet is provided with a plurality of through-hole sections 4 and 5 for passing a plurality of linear bodies and main body 2 forming a wall surface 3 which intersects the through-hole sections 4 and 5 and either one of the through-hole sections 4 and 5 has one end section 5a protruded to one side from the wall surface 3 of the main body 2 and the other end sections 5b protruded to the other side from the wall surface 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grommet used in a vehicle, and more particularly to a grommet having a dustproof and waterproof property installed at a portion where a wire harness, a pipe, a cable and the like penetrates a vehicle body structure.

[0002]

2. Description of the Related Art Conventionally, when wire harnesses, pipes, cables, and the like (hereinafter, these are simply referred to as linear bodies) extend inside and outside the interior of an automobile, dust is prevented from passing through a panel-like body structure. Also, a grommet that acts as a seal for waterproofing is installed. The grommet is integrally molded from rubber, resin, or the like, and has an outer peripheral shape corresponding to a through hole shape of a vehicle body structure, and a through hole formed to fit the outer shape of the linear body and penetrating the linear body. have.

A grommet for passing not only a wire harness but also a washer hose, an opener cable and the like is disclosed in Japanese Utility Model Laid-Open No. 4-119252. Such a grommet is shown in FIG. The grommet 10 has an inlet 21 and an outlet 22. Here, the entrance 21 is the exit 22
It is thicker than. The grommet 10 has a first through hole 11 for passing a wire harness and a second through hole 12 for passing a washer hose, an opener cable and the like. The first through hole 11 is provided at the outlet 22, and the second through hole 12 is provided at the inlet 21.

FIG. 4 shows the use of the grommet disclosed in Japanese Utility Model Laid-Open No. 4-119252. In this use mode, the grommet 10 is used to allow a wire harness or the like to penetrate from the interior of the automobile to the engine room. The right side of the dashboard 13 is the interior of the automobile and the entrance 21 is on the boundary, and the left side is the engine room and the exit 22 is located. The wire harness 14 passes through the first through hole 11. Further, the washer hose 15 passes through the second through-hole portion 12. Further, the grommet 10 prevents water from entering from the engine room side to the room side.

[0005]

However, in many cases, the washer hose 15 is bent at a steep angle when mounted on a vehicle. Because it is bent at a steep angle, the bend of the washer hose 15
The engine room side of the second through hole 12 cannot follow completely. Therefore, a gap 16 is generated, and water infiltrates from the engine room side to the room side through the gap 16. That is, the waterproofness cannot be maintained.

Accordingly, the present invention provides a grommet that passes through not only a wire harness but also a washer hose, an opener cable, and the like, and can maintain waterproofness even when the washer hose, the opener cable, and the like are bent at a sharp angle. With the goal.

[0007]

A grommet according to the first aspect of the present invention is mounted on an opening formed in a panel-like structure of a vehicle and watertightly seals a linear body passing through the panel-like structure. A grommet to be held, comprising: a plurality of through holes through which a plurality of linear bodies penetrate; and a grommet body forming a wall surface intersecting with the through hole, wherein one of the through holes is a grommet body. , And one end protruding from the wall surface of the grommet body to the other side. Accordingly, even if a washer hose or the like that is passed through the through hole having one end and the other end is bent at a steep angle, the through hole follows the bend of the washer hose or the like, and no gap is generated. Therefore, the waterproofness of the grommet is maintained.

According to a second aspect of the present invention, there is provided a grommet according to the first aspect, wherein a first through-hole portion through which the first linear body penetrates and a first through-hole through which the second linear body penetrates. A second through-hole having a smaller diameter than the through-hole of the second through-hole, and the second through-hole has one end and the other end. Accordingly, even if a washer hose or the like that is passed through the through hole having one end and the other end is bent at a steep angle, the through hole follows the bend of the washer hose or the like, and no gap is generated. Therefore, the waterproofness of the grommet is maintained.

According to a third aspect of the present invention, there is provided a grommet according to the first or second aspect, wherein an annular seal lip projecting radially outward is formed at an end of the through hole. The seal lip functions as a seal when the end is folded inward along with the axial movement of the linear body. Thereby, even if the through-hole is folded inside the through-hole, the waterproofness is maintained by the seal lip.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a grommet according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a rubber grommet for passing a wire harness or the like from the interior of the vehicle to the engine room. The grommet 1 has a substantially cylindrical first through-hole portion 4 and a second through-hole portion having an axis intersecting with an outer wall surface 3 of the grommet main bodies 2 and 2, which are mounted in openings formed in a panel-like structure of a vehicle. 5 is provided. The first through hole 4 is for passing a wire harness, and the second through hole 5 is for passing a washer hose, an opener cable, and the like, and has a smaller diameter than the first through hole 4. The second through hole 5 has one end 5a protruding from the wall 3 to one side and the other end 5b protruding from the wall of the grommet body to the other side. An annular seal lip 9 is formed at one end 5a of the second through hole 5 at the end so as to project radially outward.

FIG. 2 shows a use form of the grommet according to the embodiment of the present invention. With the dashboard 6 as the panel-like structure as a boundary, the right side is the interior side of the automobile, and the left side is the engine room side. Here, the grommet body 2 is supported by the dashboard 6, and the wire harness 7 passes through the first through hole 4. In addition, the washer hose 8 passes through the second through hole 5. Further, the first through hole 4 and the second through hole 5 have a function of preventing water from entering from the engine room side to the room side.

The washer hose 8 has one end 5
In a, it is often bent at a steep angle for mounting on a car. When the engine room side of the washer hose 8 is bent at a steep angle, the second through hole 5 is bent integrally between the engine room side and the room side. Therefore, the second through-hole 5 can follow the bending of the washer hose 8.
That is, unlike the grommet disclosed in Japanese Utility Model Laid-Open No. 4-119252, no gap is generated. Therefore, the grommet 1 can maintain waterproofness even if the washer hose 8 is bent at a steep angle.

The grommet disclosed in Japanese Utility Model Laid-Open No. 4-119252 also has the second through-hole portion 12. However, since the second through-hole portion 12 is provided in the inlet portion 21 and the inlet portion 21 is relatively thick, the second through-hole portion 12 cannot follow the sharp angle bend of the washer hose 15. Therefore, unlike the case of the grommet 1 according to the embodiment of the present invention, a gap 16 is generated.

Further, an annular seal lip 9 is formed at the end of the second through hole 5 of the grommet according to the present embodiment, and projects radially outward. Therefore, when the one end 5a and the other end 5b of the second through hole 5 are folded inward as the washer hose 8 moves back and forth, the seal lip 9 functions as a seal. Therefore, waterproofness can be further maintained.

[0015]

According to the first and second aspects of the present invention, the second through hole through which the washer hose or the like is passed is provided to penetrate the outlet. Therefore, even if the washer hose or the like is bent at a sharp angle at one end, the second through-hole portion follows the bend of the washer hose or the like, and no clearance is generated. Therefore, the waterproofness of the grommet is maintained.

According to the third aspect of the present invention, since the annular seal lip is formed, waterproofness is maintained even if the through hole is folded inside the through hole.

[Brief description of the drawings]

FIG. 1 is a diagram showing a grommet according to an embodiment of the present invention.

FIG. 2 is a diagram showing a use mode of the grommet according to the embodiment of the present invention.

FIG. 3 is a view showing a grommet disclosed in Japanese Utility Model Laid-Open No. 4-119252, which is a conventional example.

FIG. 4 is a view showing a usage example of a grommet disclosed in Japanese Utility Model Laid-Open No. 4-119252, which is a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Grommet 2 Grommet main body 3 Wall surface 4 First through hole 5 Second through hole 5a One end 5b Other end 6 Dashboard 7 Wire harness 8 Washer hose 9 Seal lip 10 Grommet 11 First through hole 12 Second through Hole 13 Dashboard 14 Wire harness 15 Washer hose 16 Clearance 21 Inlet 22 Outlet

Claims (3)

[Claims] 1. A grommet mounted in an opening formed in a panel-like structure of a vehicle and holding a linear body penetrating the panel-like structure in a watertight manner, wherein a plurality of linear bodies penetrate. A plurality of through-holes, and a grommet body that forms a wall surface that intersects with the through-hole portion, and one of the through-hole portions protrudes from the wall surface of the grommet body to one side, A second end protruding from the wall surface of the grommet body to the other side. A first through-hole portion through which the first linear body penetrates and a second through-hole portion having a smaller diameter than the first through-hole portion through which the second linear body penetrates; The grommet according to claim 1, wherein the second through hole has the one end and the other end. 3. An annular seal lip projecting radially outward at an end of the through hole, the end of the through hole being folded inward as the linear body moves in the axial direction. When
The grommet according to claim 1, wherein the seal lip functions as a seal.