Roof airbag for vehicle
A roof airbag for a vehicle includes an airbag module arranged on a roof adjacent a windshield glass of the vehicle and including an airbag chamber, and a plurality of tethers arranged in the airbag chamber in a manner of crossing each other, and each tether having a first end connected to a fixed point of the airbag module and a second end connected to an inner side of the airbag chamber to deploy together during deployment of the airbag chamber.
1 . A roof airbag for a vehicle, comprising:
an airbag module arranged on a roof adjacent a windshield glass of the vehicle and including an airbag chamber; and
a plurality of tethers arranged in the airbag chamber in a manner of crossing each other, each of the tethers having a first end connected to an inflator of the airbag module and a second end connected to an inner side of the airbag chamber to deploy together during deployment of the airbag chamber,
wherein the tethers include a pair of first tethers and a pair of second tethers disposed at different vertical heights within the airbag chamber so as to maintain a three-dimensional deployment shape of the airbag chamber when deployed.
2 . The roof airbag for a vehicle of claim 1 , wherein the airbag chamber is deployed toward the windshield glass.
3 . The roof airbag for a vehicle of claim 1 , wherein the airbag module comprises:
an airbag housing in which the airbag chamber is arranged; and
wherein the inflator is arranged in the airbag housing and configured to supply gases to the airbag chamber.
4 . The roof airbag for a vehicle of claim 1 , wherein when the airbag chamber is deployed, the second end of each tether is disposed at a lowermost end of the airbag chamber, a contact point of the airbag chamber with the windshield glass, or a point therebetween.
5 . The roof airbag for a vehicle of claim 1 , wherein the first ends of the tethers are provided on a same plane.
6 . The roof airbag for a vehicle of claim 1 , wherein the second ends of the first tethers are located at a lowermost end of the airbag chamber when the airbag chamber is deployed.
7 . The roof airbag for a vehicle of claim 1 , wherein the tethers of the first pair of tethers have different lengths and the tethers of the second pair of tethers have different lengths.
8 . The roof airbag for a vehicle of claim 7 , wherein each pair of tethers comprises a vehicle interior side tether having an end facing the vehicle interior side, and a vehicle exterior side tether having an end facing the vehicle exterior side, wherein the vehicle interior side tether is shorter than the vehicle exterior side tether.
9 . The roof airbag for a vehicle of claim 1 , wherein the second tethers are shorter than the first tethers.
10 . The roof airbag for a vehicle of claim 9 , wherein the second ends of the second tethers are disposed higher than the second ends of the first tethers when the airbag chamber is deployed.
11 . The roof airbag for a vehicle of claim 9 , wherein second ends of the first tethers are located at a lowermost end of the airbag chamber when the airbag chamber is deployed, and the second ends of the second tethers are located at a contact point of the windshield glass with the airbag chamber when the airbag chamber is deployed.
12 . The roof airbag for a vehicle of claim 9 , wherein the pair of first tethers comprises a first vehicle interior side tether having an end facing the vehicle interior side, and a first vehicle exterior side tether having an end facing the vehicle exterior side, wherein the first vehicle interior side tether is shorter than the first vehicle exterior side tether.
13 . The roof airbag for a vehicle of claim 9 , wherein the pair of second tethers comprises a second vehicle interior side tether having an end facing the vehicle interior side, and a second vehicle exterior side tether having an end facing the vehicle exterior side, wherein the second vehicle interior side tether is shorter than the second vehicle exterior side tether.
14 . The roof airbag for a vehicle of claim 1 , wherein the airbag module is arranged in a space above a headliner.
15 . The roof airbag for a vehicle of claim 1 , wherein the first end of each tether is fixed to a stud of the inflator disposed within the airbag module.
16 . A roof airbag for a vehicle, comprising:
an airbag module arranged on a roof adjacent a windshield glass of the vehicle and including an airbag chamber; and
a plurality of tethers arranged in the airbag chamber in a manner of crossing each other, each of the tethers having a first end connected to an inflator of the airbag module and a second end connected to an inner side of the airbag chamber to deploy together during deployment of the airbag chamber,
wherein the tethers comprise a pair of tethers having different lengths to control a deployment direction of the airbag chamber.
17 . The roof airbag for a vehicle of claim 16 , wherein the pair of tethers comprises a vehicle-interior-side tether shorter than a vehicle-exterior-side tether so as to suppress eccentric deployment of the airbag chamber toward the vehicle interior side.
18 . A roof airbag for a vehicle, comprising:
an airbag module arranged on a roof adjacent a windshield glass and including an airbag chamber;
an inflator disposed within the airbag module; and
a plurality of tethers each having a first end fixed to a stud of the inflator and a second end connected to an inner surface of the airbag chamber, the tethers crossing each other to suppress eccentric deployment of the airbag chamber,
wherein the tethers include first and second pairs disposed at different heights to maintain a three-dimensional deployment shape.
19 . The roof airbag for a vehicle of claim 18 , wherein each of the pair of first tethers and the pair of second tethers respectively comprise a vehicle-interior-side tether and a vehicle-exterior-side tether, the vehicle-interior-side tether being shorter than the vehicle-exterior-side tether.