Patent ID: 9669793
Date: 2017-06-06
CPC Classifications: B60R

Claim:
1. An airbag for a knee airbag apparatus which is received in a housing coupled to an instrument panel of a vehicle and inflatable in the housing, the airbag comprising: a front panel; a rear panel coupled to the front panel to form an inflation chamber, the rear panel including a wrinkle portion; and a first tether having a first end secured to the front panel and a second end secured to the rear panel at an innermost layer of the wrinkle portion; wherein the front panel is adapted to deploy adjacent the instrument panel and the rear panel is adapted to deploy adjacent knees of a passenger when the airbag is inflated, and the rear panel includes a wrinkle portion which is deployed at a position corresponding to a housing connecting portion to which the instrument panel and a rear end of the housing neighbor when the airbag is inflated, so that an additional inflation chamber is formed; wherein a vertical length of the front panel is shorter than a length of the rear panel such that when the front and rear panels are coupled correspondingly to each other, the wrinkle portion, which is unfolded out when inflating the airbag, is formed at the rear panel; and wherein the rear panel in an uninflated state includes upper and lower portions defined by a single layer of material and the wrinkle portion, the wrinkle portion disposed between the upper and lower portions and folded so as to be defined by three layers of material.