A rear wheel arch reinforcement structure and automobile

By setting triangular reinforcing members in the rear wheel arch area and welding them to the connecting plate and inner plate to form a three-way force transmission channel, the problem of insufficient strength at the rear shock absorber mounting point is solved, thereby improving the torsional stiffness of the vehicle body and the handling stability and durability of the whole vehicle.

CN224427581UActive Publication Date: 2026-06-30BAIC MOTOR CORP LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BAIC MOTOR CORP LTD
Filing Date
2025-05-27
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

The existing vehicle body structure has insufficient strength at the rear shock absorber mounting point, which makes the vehicle prone to fatigue damage during driving, affecting the vehicle's safety and reliability.

Method used

By setting a triangular rear wheel arch reinforcement in the rear wheel arch area and welding it to the surrounding connecting plate and inner plate through four flanges, a three-way composite force transmission channel is formed, which decomposes the shock absorber load to the C-pillar, D-pillar and triangular window positions, breaking the limitation of the traditional single path.

Benefits of technology

It improves the torsional stiffness of the vehicle body and the strength of the rear shock absorber mounting points, thereby increasing the overall handling stability and structural durability of the vehicle.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224427581U_ABST
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Abstract

This utility model discloses a rear wheel arch reinforcement structure and an automobile, relating to the field of automobile manufacturing technology. It includes: a triangular rear wheel arch reinforcement with a first flange on the lower rear side, a second flange on the upper rear side, a third flange on the upper front side, and a fourth flange on the lower front side; a rear wheel arch connecting plate welded to the first flange; a D-pillar inner panel sub-assembly welded to the second flange; a rear triangular window inner panel welded to the third flange; and a rear wheel arch sub-assembly welded to the fourth flange. The rear wheel arch reinforcement connects all parts of the rear wheel arch area into a single unit, distributing the shock absorber load on the rear wheel arch sub-assembly to three areas of the vehicle body: the C-pillar, D-pillar, and triangular window, thus achieving a three-way composite force transmission channel. This increases the strength of the rear shock absorber mounting point and improves the structural durability of the vehicle body.
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