Airbag device for protecting a passenger in a rear seat of a vehicle

By designing a specific airbag cushion structure, including the cushion base, the upper part of the cushion, and the side chambers, the problem of unfavorable restraint of rear seat occupant protection devices in the prior art when the angle of the front seat backrest changes is solved, and effective restraint of multiple parts of the rear seat occupants and suppression of injury values ​​are achieved.

CN122319095APending Publication Date: 2026-06-30AUTOLIV DEV AB
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Patent Information

Application Number
CN202480076523.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-12-04
Filing Date
2024-10-28
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In the prior art, the airbag device used for the protection of rear seat occupants may not effectively restrain the rear seat occupants when the angle of the front seat back changes, making it difficult to effectively protect the occupants' head, shoulders, chest and abdomen.

Method used

An airbag device for protecting rear seat occupants has been designed. The airbag cushion includes a base, an upper part, and a pair of side chambers. The upper part and side chambers protrude from the width direction of the front seat toward the rear seat. The cushion recess is located in front of the chest and abdomen. The side chambers are circular for stable restraint. The inner angles of the upper part and the side chambers are obtuse angles to prevent bending. The inflator connection is connected to the base of the cushion for air supply.

Benefits of technology

While suppressing occupant injuries, it improves the restraint performance on the head, shoulders, and knees of rear seat occupants, reduces chest and abdominal injury values, and ensures occupant safety.

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Abstract

A vehicle rear seat occupant protection airbag device is provided that improves occupant restraint performance while suppressing occupant injury values. The airbag cushion (108) of the airbag device (100) is characterized by comprising: a cushion base (126) formed along the back of the seat (112); a cushion upper portion (128) that protrudes and expands from the upper part of the cushion base (126) toward the rear seat (104); a pair of side chambers (122, 124) that protrude and expand from both sides of the cushion base (126) toward the rear seat (104); and a cushion recess (134) formed in the area between the pair of side chambers (122, 124) below the cushion upper portion (128) and recessed toward the front seat (102).
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Citation Information

Patent Citations

  • Airbag and airbag device

    JP2010201980A