×

Side airbag device

  • US 10,207,668 B2
  • Filed: 07/19/2016
  • Issued: 02/19/2019
  • Est. Priority Date: 07/31/2015
  • Status: Active Grant
First Claim
Patent Images

1. A side airbag device adapted to be mounted on a back portion of a seat of a vehicle, the airbag device comprising:

  • an airbag that is housed in a housing in a folded-up configuration and is configured to be deployed forward when fed with an inflation gas by an inflator, the folded-up airbag having an elongated outer contour extending generally in an up and down direction as mounted on the seat;

    a limitation member that is arranged around the folded-up airbag for constraining the airbag from protruding forward at airbag deployment, the limitation member being formed of a flexible sheet member and having a band shape, the limitation member comprising;

    a pair of joint regions that are located at opposite ends of the limitation member and joined with the folded-up airbag; and

    a loose region that is disposed between the joint regions and arranged around the folded-up airbag in such a manner as to be remote from the folded-up airbag, the loose region being disposed on a side of the folded-up airbag towards which the airbag protrudes, wherein a length of the loose region between the joint regions is longer than a length of an outer circumference of the folded-up airbag and shorter than a film length of the airbag as deployed, and wherein the loose region includes, in a region thereof in a deployment direction of the airbag, a tearable region that is tearable in such a manner as to split up the loose region between the joint regions at the airbag deployment,wherein;

    the tearable region includes a starting point of tearing at one end thereof in the up and down direction;

    the inflator is generally cylindrical in outer contour and is housed in a rear end region of the folded-up airbag;

    the inflator is provided with gas discharge ports at a lower end thereof;

    a lower edge of the loose region is located in a vicinity of a front region of the gas discharge ports;

    the loose region includes a cut-out region that tapers towards the tearable region, the cut-out region constitutes the starting point of tearing of the tearable region;

    the airbag includes a pelvis protecting portion for protecting a pelvis of an occupant seated in the seat at a lower end region of the airbag at deployment; and

    the pelvis protecting portion protrudes out of the limitation member downwardly in the folded-up airbag.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×