Cover for airbag device

Patent metadata

Field	Value
Publication number	US-10144384-B2
Application number	US-201715473309-A
Country	US
Kind code	B2
Filing date	Mar 29, 2017
Priority date	Mar 29, 2016
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

A cover for an airbag device includes: a cover body including an opposed part covering an airbag housed underneath, and a tear line provided on the cover body and splitting when the airbag is inflated; and a covering material covering the opposed part of the cover body. The covering material includes: a fragile portion provided on a back surface of the covering material and at least partly overlapping with the tear line; and a stitched portion, at least part of the stitched portion being located at a position overlapping with the tear line and connected to the fragile portion.

First claim

What is claimed is:

1. A cover for an airbag device comprising:
a cover body including an opposed part covering an airbag housed underneath, and a tear line provided on the cover body and splitting when the airbag is inflated; and
a covering material covering the opposed part of the cover body,
the covering material including:
a fragile portion provided on a back surface of the covering material and partly overlapping along with the tear line; and
a stitched portion, at least part of the stitched portion being located along with the tear line and connected to the fragile portion,

wherein
the fragile portion includes a plurality of fragile portions independently provided on the back surface of the covering material;
each of the fragile portions includes an end; and
the stitched portion connects the ends of the fragile portions to each other.

2. The cover for an airbag device according to claim 1 , wherein:
the tear line includes
side tear lines extending on both sides of the opposed part,
a lateral connection tear line connecting the side tear lines,
extension tear lines located separately from ends of the side tear lines, and
vertical connection tear lines connecting the side tear lines and the extension tear lines;

the fragile portion includes
side fragile portions corresponding to the side tear lines,
a lateral connection fragile portion corresponding to the lateral connection tear line, and
extension fragile portions corresponding to the extension tear lines;

the stitched portion includes
a fragile portion-connection portion; and

the fragile portion-connection portion connects the end of the side fragile portion and the end of the extension fragile portion so as to extend between a position connecting with the end of the side fragile portion and a position connecting with the end of the extension fragile portion, and is located at a predetermined distance or less from the vertical connection tear line as viewed in a deployment direction of the airbag.

3. The cover for an airbag device according to claim 1 , wherein a part of the stitched portion connected to the end of the fragile portion is located at a distance of 5 mm or less from the tear line as viewed in a deployment direction of the airbag.

Assignees

• Nihon Plast Co Ltd

Inventors

• Ooka Masahiro
• Yamami Akihiko
• Urushibata Akito
• Kiuchi Yohei

Classifications

• B60R2021/21652

  the tearing being done or assisted by cutters · CPC title

• B60R21/215

  characterised by the covers for the inflatable member {(B60R21/2176 takes precedence)} · CPC title

• B60R21/21656 Primary

  Steering wheel covers or similar cup-shaped covers · CPC title

• B60R21/203

  in steering wheels or steering columns · CPC title