Safety belt arrangement for a columnless vehicle and columnless vehicle

By using a rotation limiting component to restrict the rotation of the shoulder anchor point in the seat belt device of a pillarless vehicle, the problem of reduced seat belt restraint force during a frontal collision in a center pillarless vehicle is solved, achieving effective restraint and convenience for occupants.

CN122402431APending Publication Date: 2026-07-17TOYOTA JIDOSHA KK
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TOYOTA JIDOSHA KK
Filing Date
2025-12-05
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In a frontal collision involving a pillarless vehicle, the shoulder anchor point rotates excessively toward the front of the vehicle, resulting in a decrease in the restraining force of the seat belt on the occupant.

Method used

In the seat belt system of a pillarless vehicle, the upper part of the shoulder anchor point is rotatably mounted on the roof longitudinal beam. The rotation is restricted by a rotation limiting component connected to the rear side of the roof longitudinal beam, thus ensuring the effective restraint of the seat belt.

Benefits of technology

It suppresses the decrease in the restraining force of seat belts on occupants during a frontal collision in pillarless vehicles, ensuring occupant safety while maintaining the appearance of the vehicle interior and ease of getting in and out.

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Abstract

一种无柱车的安全带装置,其具备:肩部锚点,其上部可转动地安装于车顶纵梁且下部具有带扣;安全带,其具有与带扣可装卸的锁舌;及转动限制部件,其将比肩部锚点的上部更靠车辆后方侧的车顶纵梁和肩部锚点连结。
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Citation Information

Patent Citations

  • Seat belt device

    JP1984034958A

  • Seat belt structure for vehicle

    JP2003011779A