Patent ID: 11938887
Assignee: AUTOLIV DEVELOPMENT AB
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 13:
14. A passenger restraining device for restraining a passenger sitting on a seat of a vehicle, comprising:
an airbag at least partially stored in a seat back portion of the seat and expandable and deployable to a side of the passenger sitting on the seat, the airbag provided on a first lateral side of the seat;
a further airbag provided on a second lateral side of the seat such that the airbag and the further airbag are configured to expand and deploy on a left side and a right side of the passenger sitting on the seat, respectively,
at least one tension cloth stored from the seat back portion of the seat to a seat cushion portion through a side surface of the airbag on a side opposite from the passenger; and
a biasing mechanism embedded in the seat back portion for biasing one of the airbag and the further airbag to a passenger side,
the biasing mechanism including a shaft and a tether, the shaft configured to be disposed at a position corresponding to a shoulder portion of the passenger on a side of one of the airbag and the further airbag in the seat back portion and capable of sliding in the seat back portion in a left-right direction, the tether connected to the shaft and the other of the airbag and the further airbag,
wherein the at least one tension cloth is deployable to an outside of the seat by expanding and deploying the airbag, and is stretchable from an upper surface of the seat back portion to the seat cushion portion,
wherein the airbag when viewed in plan view from above during expansion and deployment, includes four regions demarcated by a first imaginary line extending in a front-rear direction of a vehicle through a center of a widest portion of the airbag on a straight line perpendicular to a left-right direction of the airbag and a second imaginary line orthogonal to the first imaginary line and extending in the left-right direction through a center of the first imaginary line in the left-right direction of the airbag, the four regions including a first region on a rear side of the second imaginary line and on a first side of the first imaginary line, the first side of the first imaginary line configured to be closer to the passenger, a second region on a front side of the second imaginary line and on the first side of the first imaginary line, a third region on the front side of the second imaginary line and on a second side of the first imaginary line, the second side opposite to the first side, and a fourth region on the rear side of the second imaginary line and on the second side of the first imaginary line,
wherein the at least one tension cloth passes through at least the first region to the third region upon deployment of the airbag,
wherein the at least one tension cloth has a collective width that increases from the first region to the third region,
the at least one tension cloth is secured to the seat back portion at a position on an inner side of the shaft in the left-right direction,
during expansion and deployment of the airbag and the further airbag,
the at least one tension cloth is deployed to the outside of the seat, and is configured to be stretched to the seat cushion portion from a vicinity more inside than the shoulder portion of the passenger in the left-right direction of the upper surface of the seat back portion,
when the tether is deployed to the outside of the seat during expansion and deployment of the airbag and the further airbag, the tether is pulled by the other of the airbag and the further airbag, and the shaft is configured to move in the seat back portion to a position corresponding to a further shoulder portion of the passenger, such that the at least one tension cloth is pulled by the shaft, and the one of the airbag and the further airbag is biased to the passenger.