Reinforcing bracket, a-pillar assembly and vehicle

By installing a reinforcing bracket on the upper section of the A-pillar and utilizing expansion reinforcement and annular groove design, the problems of insufficient noise control and collision safety of the A-pillar structure are solved, thereby improving NVH performance and enhancing structural strength.

WO2026124523A1PCT designated stage Publication Date: 2026-06-18ZHEJIANG GEELY HLDG GRP CO LTD +1
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
ZHEJIANG GEELY HLDG GRP CO LTD
Filing Date
2025-12-10
Publication Date
2026-06-18

AI Technical Summary

⚠Technical Problem

In the existing technology, the A-pillar structure has shortcomings in terms of vehicle collision safety and noise control. In particular, the separate design of the expansion rubber block in the inner cavity of the A-pillar and the body reinforcement results in low sheet metal strength, poor sealing effect, and easy deformation during the electrophoresis process.

⚗Method used

The design employs a reinforced support structure, which incorporates expansion reinforcements with high structural strength into the frame body. An annular groove is also provided in the lower section of the frame body near the A-pillar, through which expansion sound insulation components are inserted. The expansion seals the cavity by heating and expanding, reducing the risk of deformation, absorbing noise, and improving structural strength.

🎯Benefits of technology

It effectively improves the NVH performance and structural strength of the A-pillar, reduces noise transmission, enhances vehicle safety, and at the same time reduces the number of openings in the inner panel, thereby improving the structural strength of the A-pillar inner panel.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN2025141398_18062026_PF_FP_ABST
    Figure CN2025141398_18062026_PF_FP_ABST
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Abstract

A reinforcing bracket (30), comprising a bracket skeleton (3) and an expandable sound insulation member (4), wherein the bracket skeleton is disposed in a cavity of an A-pillar upper section (22) and is connected to an A-pillar inner panel (11); the bracket skeleton comprises a skeleton body (31) and an expandable reinforcing member (32); the expandable reinforcing member is embedded in the skeleton body; an annular groove is defined in the part of the skeleton body close to an A-pillar lower section (21); the expandable sound insulation member surrounds the outer peripheral side of the bracket skeleton and partially passes through the interior of the annular groove; the expandable sound insulation member is adapted to expand upon heating, so as to seal the cavity; and the strength of the expandable reinforcing member is greater than that of the expandable sound insulation member. An A-pillar assembly (100) and a vehicle. The use of the structure can effectively absorb noise from the A-pillar lower section to the A-pillar upper section, thereby improving the NVH performance of the vehicle, the structural strength of an A-pillar, and the safety performance of the vehicle.
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