Connecting structure of automobile side-wall assembly and rear apron plate assembly as well as rear floor assembly

Abstract

The invention relates to a connecting structure of an automobile side-wall assembly and a rear apron plate assembly as well as a rear floor assembly, which comprises a rear upright post inner plate lower section, a wheel cover outer plate, a rear apron plate outer plate, a rear apron inner plate, a rear floor, a rear floor rear side plate and a rear floor longitudinal beam rear section, wherein a reinforced plate is respectively welded between the rear floor and the rear apron plate outer plate as well as between the rear floor and the rear apron plate inner plate, and a cavity structure is respectively formed between the reinforced plate and the rear floor, between the reinforced plate and the rear apron plate outer plate and between the reinforce plate and the rear apron plate inner plate. Due to the adoption of the connecting structure, the structural strength of the junction between the side-wall assembly and the rear apron plate assembly can be improved, and the fracture of a metal plate and welding spots on the junction between the side-wall assembly and the rear apron plate assembly can be avoided.

Description

technical field [0001] The invention relates to a connection structure between parts in an automobile body, in particular to a connection structure between an automobile side wall assembly, a rear skirt assembly and a rear floor assembly. Background technique [0002] The car body includes the car side wall assembly, the rear skirt assembly and the rear floor assembly, such as Figure 5 As shown, the side wall assembly, the rear skirt assembly and the rear floor assembly are welded together as one. Among them, the side wall assembly includes the lower section 1 of the rear pillar inner panel and the wheel house outer panel 2 which are welded together, and the rear apron assembly includes the rear apron outer panel 6 and the rear apron inner panel 8 which are welded together. The floor assembly includes a rear floor 5 welded together, a rear side panel 3 of the rear floor and a rear section 4 of the longitudinal beam of the rear floor (the dotted line part in the figure). Th...

AI Technical Summary

Problems solved by technology

[0003] The connection between the side wall assembly and the rear skirt assembly is usually made of ordinary strength steel plate, and the thickness of the material is very thin (generally less than 1mm), which will make the structural strength here poor, and it is easy to cause the sheet metal here. Fatigue and cracking of solder joints, this phenomenon is particularly prominent on some passenger car bodies with off-road performance, seriously affecting the quality of the car

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