Passenger protection device in a motor vehicle with an airbag module
First Claim
1. A passenger protection device on a steering wheel of a vehicle with a steering wheel airbag module, the steering wheel airbag module being mounted behind a hub cover and containing at least one folded airbag and at least one gas generator, the hub cover having a stationary center area as first wall area about which is mounted a second wall area directly joined to the first wall area by an edge connection area, it being possible for an annular gap to be formed around the stationary center area in the second wall area in an event of airbag activation, the airbag being correspondingly annular in form with a tubular area associated with the annular gap and emerging from such gap when the airbag is in an inflated state, and it being possible for the annular gap to be formed immediately around the stationary center area in the event of airbag activation as a result of expansion and opening of at least the edge connection area of the second wall area,characterized in that the edge connection area of the second wall area is clamped to the stationary center area when the passenger protection device has not been activated, and the edge connection area is extracted from the clamping by the airbag during inflation and is expanded and opened around the stationary center area for formation of the annular gap.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to a passenger protection device on the steering wheel (2) of a motor vehicle, comprising a steering wheel airbag module which is arranged behind the cap (1) of the hub of a steering wheel, containing at least one steering wheel airbag (10; 28; 39) and at least one gas generator. The hub cap (1) has a fixed center area (8; 21; 29) acting as a first wall area around which a second wall area (7; 24; 33) which is directly adjacent to an edge area (12; 23; 31) is arranged. When the airbag is activated, an annular gap (5) can be formed in the second wall area (7; 24; 33) around the fixed center area (8; 21; 23), the steering wheel airbag (10; 28; 39) being embodied in a correspondingly ring-shaped manner with a tubular area (11) which is associated with the annular gap (5) and extends therefrom when inflated. According to the invention, the annular gap (5) can be formed directly around the fixed center area (8; 21; 29) when the airbag is activated by expanding and/or tearing open at least the adjacent edge area (12; 23; 31) of the second wall area (7; 24; 33).
-
Citations
19 Claims
-
1. A passenger protection device on a steering wheel of a vehicle with a steering wheel airbag module, the steering wheel airbag module being mounted behind a hub cover and containing at least one folded airbag and at least one gas generator, the hub cover having a stationary center area as first wall area about which is mounted a second wall area directly joined to the first wall area by an edge connection area, it being possible for an annular gap to be formed around the stationary center area in the second wall area in an event of airbag activation, the airbag being correspondingly annular in form with a tubular area associated with the annular gap and emerging from such gap when the airbag is in an inflated state, and it being possible for the annular gap to be formed immediately around the stationary center area in the event of airbag activation as a result of expansion and opening of at least the edge connection area of the second wall area,
characterized in that the edge connection area of the second wall area is clamped to the stationary center area when the passenger protection device has not been activated, and the edge connection area is extracted from the clamping by the airbag during inflation and is expanded and opened around the stationary center area for formation of the annular gap.
Specification