AIRBAG DEVICE FOR A FRONT PASSENGER SEAT

摘要

An airbag housed in the housing and inflatable with an inflation gas for deployment rearward in order to protect a passenger in a front passenger seat. The airbag includes a main bag section that includes at its rear surface a front-collision arresting plane for catching the passenger upon a frontal collision, and an auxiliary bag section that includes an oblique-collision arresting section protruding rearward relative to the main bag section. The oblique-collision arresting section includes on its lateral an oblique-collision arresting plane for catching a head of the passenger upon an oblique collision. The oblique-collision arresting section is a high-pressure section which has a higher internal pressure than the main bag section when inflated. The airbag further includes in a front region of the auxiliary bag section a low-pressure section that is in gas communication with the main bag section and partitioned from the high-pressure section by a partition wall.

主权项

1. An airbag device for a front passenger seat adapted to be mounted on an instrument panel of a vehicle in front of a front passenger seat and comprising a housing adapted to be disposed in the instrument panel and an airbag housed in the housing in a folded-up configuration and being inflatable with an inflation gas for deployment rearward in order to protect a passenger seated in the front passenger seat, the airbag comprising:
an inflatable main bag section that includes at a rear surface thereof a front-collision arresting plane for catching the passenger moving forward in the event of a frontal collision of the vehicle; an auxiliary bag section that is deployable on a lateral in a left and right direction of the main bag section and inflatable into such a shape as to protrude rearward relative to an edge in a left and right direction of the front-collision arresting plane, the auxiliary bag section including an oblique-collision arresting section that protrudes rearward relative to the main bag section, the oblique-collision arresting section including on a lateral thereof an oblique-collision arresting plane extending rearward in such a manner as to be continuous with the front-collision arresting plane for catching a head of the passenger moving diagonally forward in the event of an oblique collision of the vehicle; a high-pressure section that is composed of a region of the auxiliary bag section including at least the oblique-collision arresting section and is higher in internal pressure than the main bag section when inflated; and a low-pressure section that is disposed in front of the oblique-collision arresting section in the auxiliary bag section, the low-pressure section being in gas communication with the main bag section and partitioned from the high-pressure section by a partition wall and having a lower internal pressure than the oblique-collision arresting section.