Door ring structure and vehicle

The door ring structure, which is integrally welded, and the reinforcement components, especially the hot air expansion tube, on the upper beam solve the problem of fracture of the A-pillar and the upper beam during a collision, thereby improving the vehicle's impact resistance and occupant safety.

CN224491223UActive Publication Date: 2026-07-14BEIJING CHEHEJIA AUTOMOBILE TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING CHEHEJIA AUTOMOBILE TECH CO LTD
Filing Date
2025-06-05
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

In the case of a collision, especially a rear-end collision with a truck, the door ring structure in the prior art is prone to breakage of the A-pillar and the upper side beam, which affects the safety of the occupants.

Method used

The door ring structure is made of one piece of welded stamping, which connects the upper beam, lower beam, A column, B column and C column into a whole. The upper beam is reinforced, especially between the A column and the B column, where hot air expansion tubes are used as reinforcements. The structure is strengthened by laser welding and plug welding holes.

Benefits of technology

This improves the impact resistance of the door ring structure, reduces the probability of fracture and deformation of the upper beam, and enhances vehicle safety and occupant protection.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224491223U_ABST
    Figure CN224491223U_ABST
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Abstract

The embodiment of the present application provides a door ring structure and a vehicle, the door ring structure comprises a door ring body and a reinforcing piece; the door ring body is an integral structure, the door ring body comprises an upper side beam and a lower side beam which are arranged at intervals, and an A column, a B column and a C column which are connected with the upper side beam and the lower side beam, the upper side beam, the lower side beam, the A column and the B column surround a first door hole, and the upper side beam, the lower side beam, the B column and the C column surround a second door hole; the reinforcing piece is arranged on the upper side beam, and the reinforcing piece is located at least partially between the A column and the B column. The door ring structure has good impact resistance.
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