Unlock instant, AI-driven research and patent intelligence for your innovation.

Grommet

A grommet and cylinder technology, applied in the field of grommets, can solve the problems of skew deformation, reduction of grommet retention force, separation of annular grooves, etc., and achieve the effects of easy compression deformation and improved retention force

Active Publication Date: 2020-07-24
SUMITOMO WIRING SYST LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when the plurality of ribs extending from the large-diameter cylinder to the small-diameter cylinder are protruded from the enlarged-diameter cylinder, the insertion force can be reliably reduced, but the grommet itself is inherently damaged after the grommet is attached. Ring retention is reduced by such problems
That is, in the grommet fitted in the through hole, if the wire harness is pulled toward the large-diameter cylindrical portion with an excessive force, the small-diameter cylindrical portion of the grommet is stretched and deformed toward the large-diameter cylindrical portion, and is connected to the Together with the ribs of the small-diameter cylindrical part, the enlarged-diameter cylindrical part is also deformed toward the inner peripheral side, and the annular groove of the large-diameter cylindrical part may come off from the peripheral part of the through hole.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Grommet
  • Grommet
  • Grommet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] Embodiments of the present invention will be described below with reference to the drawings.

[0027] exist Figure 1~3 In , the state in which the grommet 10 which is one Embodiment of this invention is externally attached to the wire harness 12 is shown. The grommet 10 is configured to include: a small-diameter cylindrical portion 14, which is substantially cylindrical in shape, and is axially (in image 3 middle, up and down direction) extending; the thick-walled large-diameter tube part 20 is located on one side of the axial direction (in image 3 center, the lower side), fitted into the through-hole 18 formed in the vehicle body panel 16 as a fixed part; image 3 middle, upper side) extends toward the large-diameter tube part 20 to expand in diameter, and connects the small-diameter tube part 14 and the large-diameter tube part 20. The grommet 10 is made of EPDM (ethylene propylene rubber), CR (chloroprene rubber), Rubber material such as SI (silicone rubber) is...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A grommet is provided with a small-diameter tubular portion that is fixated to an outer circumferential surface of a wire harness, a large-diameter tubular portion that is fixated to a through-hole of a fixed member, and an increasing-diameter tubular portion that connects the small-diameter tubular portion and the large-diameter tubular portion. The increasing-diameter tubular portion includes a small-diameter tubular portion-side end portion provided isolated from the small-diameter tubular portion on the outer circumference side of the small-diameter tubular portion, and a flexible connecting portion connecting an inner circumferential surface of the increasing-diameter tubular portion to the small-diameter tubular portion. A plurality of contact ribs are provided projecting from an outer circumferential surface of the increasing-diameter tubular portion, the contact ribs being arranged so as to be separated from each other in a circumference direction, each extending from the large-diameter tubular portion side toward the small-diameter tubular portion-side end portion.

Description

technical field [0001] The present invention relates to a grommet fitted to a through-hole formed in a fixing member such as a vehicle body panel in a state of being externally mounted on a wire harness. Background technique [0002] Conventionally, when a wire harness wired to an automobile is wired across a fixed member such as a body panel that separates the outside of the vehicle, such as the engine room, from the inside of the vehicle, the grommet is attached to the wire harness formed on the vehicle body in a state of being externally attached to the wire harness. through holes in the panel. The grommet is integrally provided with a small-diameter cylindrical portion closely fixed to the outer peripheral surface of the wire harness, a large-diameter cylindrical portion closely fitted and fixed to the through hole of the vehicle body panel, and an enlarged diameter cylindrical portion connecting them. The structure prevents water from infiltrating from the outside of t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02G3/22B60R16/02H01B17/58
CPCB60R16/0222H02G3/22H01B17/58H01B7/0045H01B17/583
Inventor 末永亮小林刚诚
Owner SUMITOMO WIRING SYST LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com