Automobile back door strengthening structure

Abstract

The invention relates to an automobile back door, in particular to an automobile back door strengthening structure. The automobile back door strengthening structure comprises a back door outer plate and the back door, wherein a back door inner plate and the back door are fixed into a whole. A connecting plate is arranged at the upper portion of an inner cavity formed between the back door outer plate and the back door inner plate, inner plate strengthening plates are fixed to the two ends of the connecting plate, and a strengthening structure is formed by the connecting plate and each inner plate strengthening plate, wherein two face plates of the strengthening structure, the inner plate face of the back door outer plate and the inner plate face of the back door inner plate are welded into a whole. Due to the structure, the modality and lateral rigidity of the back door are improved, and the rigidity performance of a hinge installing point is enhanced.

Description

technical field [0001] The invention relates to an automobile back door, in particular to an automobile back door reinforcement structure which reduces requirements on welding precision of a vehicle body, reduces manufacturing costs and improves production efficiency. Background technique [0002] The back door of a car is a key part of the car body. It is connected with the body through hinges and locks, and is an organic whole with the car body. When designing the back door, it must first ensure its airtightness and ensure the overall In terms of strength, stiffness, modality and manufacturability, it must meet the requirements of the overall performance of the car body. [0003] The actual working conditions of the back door are relatively complicated, and its working process is subject to loads that change with time. If the design is unreasonable, the performance will not meet certain requirements. During the use of the actual vehicle, the back door of the prior art wil...

AI Technical Summary

Problems solved by technology

[0003] The actual working conditions of the back door are relatively complicated, and its working process is subject to loads that change with time. If the design is unreasonable, the performance will not meet certain requirements.

During the use of the actual vehicle, the back door of the prior art will have cracks in the sheet metal of the hinge installation point, cracks in the position of the door lock, and cracks in the inner panel of the back door of the back door, as well as cracks between the back door and the back door due to insufficient lateral rigidity. The side panel assembly interferes with each other during the actual vehicle use

[0004] To sum up, during the use of the back door in the prior art, cracking of the sheet metal at the hinge installation point, cracking of the door lock position, and cracking of the back door inner panel of the back door are prone to occur. side interference

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