Car and its rear torque box

Abstract

The invention discloses an automobile and a rear torsion box thereof. The automobile rear torsion box comprises a first connecting part, a second connecting part and a third connecting part, wherein the first connecting part comprises a first base plate and a second base plate which are oppositely arranged, and a first lining plate which is fixed between the first base plate and the second base plate through a plurality of first reinforcing ribs; the second connecting part comprises a first buffer plate, a second buffer plate, a third buffer plate and a first support plate; the third connecting part comprises a third base plate and a fourth base plate which are oppositely arranged; wherein, both ends of the first buffer plate are respectively connected with the first base plate and the third base plate; the first support plate is arranged on the first buffer plate, and an angle formed between the first support plate and the first buffer plate is greater than 0 degree and smaller than 180 degrees; and both ends of the first support plates are respectively connected to the first connecting part and the second connecting part. By adopting the rear torsion box, the problems that a conventional metal plate rear torsion box is low in integration degree, complex in process and high in cost, and the structure of the rear torsion box is deformed easily because of collision of the rear part of the automobile are solved, and a battery pack can be effectively protected.

Description

technical field [0001] The invention relates to the technical field of automobile parts manufacturing, in particular to an automobile and its rear torque box. Background technique [0002] At present, more and more attention is paid to the lightweight technology of automobiles. In order to improve the lightweight level, a large number of steel-aluminum hybrid bodies or all-aluminum bodies have appeared. The rear torsion box of the automobile is connected with multiple large structures such as the sill beam, rear cross beam, rear longitudinal beam, rear floor, rear wheel housing, etc., and plays an important role in connection and force transmission. [0003] The rear torsion box of the car is the key force transmission area between the sill beam of the car body and the rear longitudinal beam, and it is also the frame structure of the rear seats and the rear suspension. The existing automobile torque box generally adopts two structural forms, one is spot-welded by multiple s...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned problems in the prior art, the present invention provides a car and its rear torsion box to solve the problem of structural deformation of the torsion box in the rear collision of the car and provide protection for the battery pack.

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