Patent ID: 11865993
Assignee: AUTOLIV DEVELOPMENT AB
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A driver side airbag device, comprising:
a steering wheel of a vehicle; and
an airbag module containing an inflator and an airbag cushion, which is stored in the steering wheel; wherein
the steering wheel contains:
a housing portion that stores the airbag module; and
a cover member that closes the housing portion,
the cover member contains:
a design region facing an occupant side; and
a thin-walled portion formed by reducing a thickness of the design region along a predetermined range from an upper portion to a lower portion of the design region and that is cleaved open by an expansion pressure of the airbag cushion to open the predetermined range as one or a plurality of cover doors, wherein the thin-walled portion includes a first straight line portion along a vertical axis of the design region in the upper portion of the design region, a second straight line portion along the vertical axis of the design region in the lower portion of the design region, and a curved line portion connecting the first straight line portion and the second straight line portion,
the thin-walled portion contains a first plate thickness portion having a predetermined thickness and a second plate thickness portion that is thinner than the first plate thickness portion, and
the second plate thickness portion is formed at least in the curved line portion of the thin-walled portion in the lower portion of the design region, wherein the second plate thickness portion is formed to reach a lower end vicinity of the design region.