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Method for making air bag cover

A technology of airbag and structure, which is applied in the field of manufacturing airbag cover, can solve the problems of complex structure and increased production cost of airbag cover, and achieve the effect of reducing sink marks or uneven gloss

Active Publication Date: 2007-07-18
TOYODA GOSEI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the structure of the mold is complicated, resulting in an increase in the production cost of the airbag cover

Method used

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  • Method for making air bag cover
  • Method for making air bag cover
  • Method for making air bag cover

Examples

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Embodiment Construction

[0032] Hereinafter, embodiments of the present invention will be described based on the drawings. As shown in FIGS. 1 and 2 , the airbag cover 10 manufactured in this embodiment is used in an airbag device S for a passenger or passenger seated in a front passenger seat (passenger seat), and is made of synthetic resin (including A thermoplastic resin, such as an olefin-based thermoplastic elastomer, is produced by injection molding, and is provided in the opening 2b of the upper side 2a of the instrument panel in front of the front passenger seat.

[0033] It should be noted that based on the design of the airbag cover 10 installed on the motor vehicle, the terms "vertical", "longitudinal", and "transverse" used in this specification are the same as the "vertical" of the motor vehicle when the motor vehicle is running straight ahead. Vertical", "Portrait", and "Landscape" are the same.

[0034] In addition, the airbag device S for the front seat occupant includes: a folded air...

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Abstract

An airbag cover is manufactured by thermoplastic resin for injection moulding in the invention. A prefabricated breaking part is formed by a groove on a back side of the airbag cover. A mould (23) for forming the airbag cover comprises: split dies (24, 25) for forming a die cavity (23a); and a metal plate part (28) for forming a groove part on tail end for prefabricating the breaking part. The plate part (28) with thickness of 0.3mm to 1.5mm protrudes from the tail end to the die cavity (23a) and is fixed on the split die (25) on a root side thereof, via heat insulation materials (29A, 29B). The split die (25) is formed on a position near the groove of the back side of the airbag cover.

Description

technical field [0001] The present invention relates to a method of manufacturing an air bag cover made of synthetic resin suitable for covering a folded air bag and designed to rupture at a thin prefabricated break when pressed against by an inflated and deployed air bag, Here, an opening for protrusion of the airbag is formed. Background technique [0002] In a conventional airbag cover made of thermoplastic resin, a thin prefabricated break is formed around the door so that when the cover is pressed against by the airbag, the door can be opened to form an opening for protrusion. This prefabricated break is formed by providing grooves on the rear side of the airbag cover so as to extend continuously along the prefabricated break, and, in conventional techniques, during the molding of the airbag cover by injection molding On the rear side part molds of the two part molds of the cavity, protrusions having a substantially angular cross-section are provided to correspond to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/26B29C45/27B60R21/16B29C45/17B29C45/37B29L31/30B60K37/00B60R21/20B60R21/2165
Inventor 冈田靖浅井真子浅沼准一
Owner TOYODA GOSEI CO LTD