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A lower body structure

A technology of car body structure and structural parts, which is applied in the direction of load-bearing body structure, superstructure, vehicle parts, etc., can solve the problem of low safety performance of the car body, and achieve the effect of solving the insufficient joint strength/rigidity

Active Publication Date: 2017-12-05
SAIC-GM-WULING AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a lower body structure for solving the problem of low safety performance of the automobile body

Method used

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Embodiment Construction

[0028] The present invention provides a lower vehicle body structure. In order to make the purpose, technical solution and effect of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0029] This application provides a lower body structure, including girder weldments, please refer to figure 1 , the frame weldment includes a middle frame 12, the cross-section of the middle frame 12 gradually increases from the front end to the front seat installation point, and gradually decreases from the front seat installation point to the rear end.

[0030] During specific implementation, since the middle girder 12 is installed in the member protection area, in order to be able to bear greater weight, the larger load-beari...

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Abstract

The invention relates to a lower car body structure. The lower car body structure comprises a large beam welding piece, wherein the large beam welding piece comprises a medium large beam; and the cross section of the medium large beam is gradually increased from the front end to the front-row seat mounting point, and is gradually decreased from the front-row seat mounting point to the rear end. The plate pattern of the medium large beam is changed, so that the great load-bearing position of a car is located at the position with the largest cross section of the medium large beam, the load-bearing capacity of the medium large beam is higher, and the defect of cracking of sheet metal parts due to poor joint strength / rigidity and stress concentration of a car body structure is effectively solved; and the lower car body structure is a greater improvement in the field.

Description

technical field [0001] The invention relates to a car body structure, in particular to a lower car body structure. Background technique [0002] The car body structure is composed of components and their joints and sheet metal parts, and is the basic system for bearing and transmitting loads. The structural layout of the car body has a decisive effect on the performance (strength, stiffness, mode, etc.) of the car body. The quality of the structural layout not only affects the performance of the car body, but also affects the cost of the car body. [0003] The lower car body structure bears the weight of the whole vehicle. If its strength / stiffness is not enough, it will affect the safety performance of the car body, resulting in a lower modal of the whole car, and the road test is prone to cracking problems. [0004] Thereby prior art still needs to improve and improve. Contents of the invention [0005] In view of the shortcomings of the above-mentioned prior art, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D23/00
CPCB62D23/00
Inventor 朱灯宏韦勇韦超忠许冰黄宗斌曾蔚闫洪涛梁小妮韦学丽李直腾连理陈仁泽梁静强
Owner SAIC-GM-WULING AUTOMOBILE CO LTD