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Grommet

A technology for grommets and barrels, applied in the field of improving the installation workability of the grommets and wire harnesses, can solve the problems of reduced reliability of waterproof performance, etc., and achieve improved reliability, enhanced shape retention, and enhanced shape retention Effect

Inactive Publication Date: 2011-11-09
SUMITOMO WIRING SYST LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the vehicle body locking recess 103 on the large-diameter side outer peripheral surface of the enlarged-diameter cylindrical portion 102 that is locked to the through hole of the vehicle body panel is easily deformed, and there is a problem that the reliability of the waterproof performance is lowered.

Method used

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Examples

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Embodiment Construction

[0057] Refer to the following Figure 1 to Figure 8 Embodiments of the present invention will be described.

[0058] The grommet 1 of this embodiment and the above-mentioned conventional example Figure 9 Likewise, it is fixed in advance to the wire harness W / H that is routed from the engine compartment side (X) to the through hole H of the instrument panel P to the vehicle compartment side (Y).

[0059] The grommet 1 is integrally molded from rubber.

[0060] This grommet 1 has: a small-diameter cylindrical portion 2 that makes the wire harness close to and penetrates through it, and only the front end 2d of the side portion 2a is fixed by wrapping tape around the wire group of the wire harness W / H; The outer circumference of the middle part of the longitudinal direction of the part 2 is continuous, surrounds the other side part 2b of the small-diameter tube part 2 and expands in diameter; Annularly arranged; the inner flange 5 is arranged at intervals in the circumferentia...

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Abstract

A grommet mounted in a through-hole in a vehicle body panel and through which a wire harness is passed. Even if taping only one side, the grommet shape is retained and the grommet is prevented from deforming in the direction in which an engaging recess of the grommet separates from the peripheral edge of the through-hole. The grommet comprises: an enlarged-diameter tube which connects to the outer periphery of the longitudinal intermediate section of a small-diameter tube through which wires are tightly passed, and which is enlarged in diameter to surround the other side of the small-diameter tube; an engaging recess which is annularly formed in the outer peripheral surface of the enlarged-diameter tube on the large diameter side thereof; inner ribs provided at intervals in the circumferential direction and connecting between the inner periphery of the enlarged-diameter tube and the outer peripheral surface of the other side of the small-diameter tube; and wire insertion tubes which connect to through-holes for wires formed in the enlarged-diameter tube and which extend through the inside of the enlarged-diameter tube and project from the opening end on the large-diameter side. The inner ribs stick out with a clearance from the inner peripheral surface of the enlarged-diameter tube from the position where the enlarged-diameter tube contacts the inner peripheral surface of the through-hole of the vehicle body panel to a position facing the engaging recess.

Description

technical field [0001] The present invention relates to a grommet that is attached to a through hole of a vehicle body panel that is attached to a wire harness that is routed to an automobile, and is used in particular to improve the installation workability of the grommet and the wire harness. Background technique [0002] The wiring harness from the engine room of the car to the side of the car room is routed through the through-hole provided on the instrument panel (or dash panel) used to separate the engine room and the car room. In order to prevent water and dust from entering through the through-hole In the vehicle interior, a grommet integrally formed by rubber or elastic body is installed on the wire harness, and the vehicle body locking recess provided on the grommet is locked to the periphery of the through hole. [0003] As such a grommet, the present applicant provided in Japanese Patent Application Laid-Open No. 2003-111250 Figure 9 The grommet 100 is shown. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G3/22B60R16/02H01B17/58
CPCB60R16/0222H02G3/0658H02G3/22
Inventor 中川和纪
Owner SUMITOMO WIRING SYST LTD
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