Steering wheel airbag

Abstract

A steering wheel airbag, arranged to cover a steering wheel when inflation is completed, includes: a front-collision receiving surface which is arranged on a side of a driver when inflation is completed, so as to receive the driver moving forward during a head-on collision of a vehicle, the front-collision receiving surface being arranged substantially along a vertical direction to be tilted with respect to a ring surface of the steering wheel when inflation is completed; and arm restraining parts which are arranged near arms of the driver steering a ring part of the steering wheel on both right and left sides of the front-collision receiving surface when inflation is completed, the arm restraining parts coming into contact with the arms during an oblique collision or an offset collision of the vehicle, so as to prevent a movement of the driver to an obliquely front side.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S)[0001]This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2017-066121, filed on Mar. 29, 2017, the entire contents of which are incorporated herein by reference.BACKGROUND1. Field of the Invention[0002]The invention relates to a steering wheel airbag which is inflated by allowing inflation gas therein and is arranged to cover a steering wheel when inflation is completed.2. Description of the Related Art[0003]In the related art, a steering wheel airbag is configured to be housed in an instrument panel on a front side of a steering wheel in a folded state and to cover the steering wheel when inflation is completed, and configured such that a driver-side wall part which is arranged on a driver side when inflation is completed is substantially along a vertical direction (for example, see JP-A-9-11837).[0004]In the steering wheel airbag of the related art, the driver-side wall part is arranged sub...

AI Technical Summary

Benefits of technology

The invention provides a steering wheel airbag that can accurately protect a driver during a collision, even if they are moved in various directions. The airbag has arm restraining parts that prevent the driver's arms from moving during a collision, and a front-collision receiving surface that helps regulate the driver's movement during a head-on collision. The airbag is also designed to be rapidly inflated and can enter narrow gaps between the driver's ring part and the airbag's body. The tethers are designed to ensure a symmetrical inflation of the airbag body and to allow for a wide range of inflation in the vicinity of the driver's arms. Overall, the invention provides a holistic solution for protecting drivers during collisions.

Problems solved by technology

However, in the steering wheel airbag of the related art, it is not considered that the driver is protected during the collision state, in which impact is applied from an obliquely front side, such as oblique collision or offset collision of a vehicle.

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