Airbag Device

Patent metadata

Field	Value
Publication number	US-2017158156-A1
Application number	US-201515324162-A
Country	US
Kind code	A1
Filing date	Apr 14, 2015
Priority date	Jul 9, 2014
Publication date	Jun 8, 2017
Grant date	—

Abstract

An airbag device configured such that, inflator gas is less likely to leak outside from an insertion hole formed on a cushion and into which the inflator is inserted during assembly of the airbag device. The airbag device 100 includes: a bag-shaped cushion 108 which deploys using gas supplied from inflator 110; an insertion hole 112 formed on the cushion and through which the inflator is inserted; and a covering part 120 provided on an inner side of the cushion and covers the insertion hole. The covering part includes: a first cloth piece 122 overlapping the insertion hole and on which a slit 126 that is elongated in one direction is formed; and a second cloth piece 124 positioned to overlap the first cloth piece and a slot 128 is formed having a longitudinal direction intersecting a longitudinal direction of the slit overlapping the insertion hole.

First claim

1 . An airbag device of adapted to be installed in a vehicle, the airbag device comprising:
a cylinder-type inflator; a bag-shaped cushion which inflates and deploys using gas supplied from the inflator; an insertion hole which is formed by the cushion and through which the inflator is inserted into the cushion to assemble the airbag; and a covering part which is provided on an inner side of the cushion and which covers the insertion hole, wherein the covering part includes: a first piece provided at a position overlapping the insertion hole and on which a first hole that is elongated in one direction is formed; and a second cloth piece which is provided so as to overlap with the first cloth and on which a second hole is formed so as to have a longitudinal direction of the second wire intersecting a longitudinal direction of the first hole at a position overlapping the insertion hole.

2 . The airbag device according to claim 1 , further comprising wherein a transverse dimension of the first hole is smaller than a transverse dimension of the second hole.

3 . The airbag device according to claim 1 , further comprising wherein the transverse dimension of the second hole is approximately equal to a diameter of the inflator.

4 . The airbag device according to claim 1 further comprising, wherein the first cloth piece and the second cloth piece are mountain-folded above the first hole along the longitudinal direction of the first hole so as to protrude toward the inside of the cushion.

5 . The airbag device according to claim 1 , further comprising wherein the first cloth piece is provided on the inner side of the cushion and positioned between the second cloth piece and the inner side of the cushion.

6 . The airbag device according to claim 5 , further comprising wherein at least two ends in the longitudinal direction of the first cloth are joined to the inner side of the cushion.

7 . The airbag device according to claim 1 further comprising, wherein the second cloth is provided on the inner side of the cushion and positioned between the first cloth piece and the inner side of the cushion.

8 . The airbag device according to claim 7 , further comprising wherein at least the ends in the longitudinal direction of the second cloth piece are joined to the inner side of the cushion.

9 . The airbag device according to claim 1 further comprising, wherein the first and the second cloth pieces overlapped with each other so as to cover the insertion hole, the first cloth and the second cloth pieces forming a check valve which restricts leakage of the gas to an outside of the cushion after an operation of the inflator.

10 . The airbag device according to claim 1 further comprising, where the first hole is a slit.

11 . The airbag device according to claim 1 further comprising, wherein the second hole is an elongated hole.

Assignees

• Autoliv Dev

Inventors

• Shimizu Takayuki
• Furusawa Nozomi
• Kobata Tadashi
• Ouchi Takahiro

Classifications

• B60R21/2171 Primary

  specially adapted for elongated cylindrical or bottle-like inflators with a symmetry axis perpendicular to the main direction of bag deployment, e.g. extruded reaction canisters (B60R21/2176 takes precedence) · CPC title

• B60R21/235

  characterised by their material · CPC title

• B60R21/217 Primary

  Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together · CPC title