Reinforcing support of automobile rear floor

Abstract

The invention discloses a reinforcing support of an automobile rear floor. The cross section of the reinforcing support of the rear floor is in a U shape, and the reinforcing support is a groove type support. The upper end of the reinforcing support is used for being welded with rear wheel hood reinforcing pieces and rear wheel hood supporting pieces, the lower end of the reinforcing support is provided with a first welding flanging used for being welded with the rear floor, and second welding flangings used for being welded with rear wheel hoods and a rear longitudinal beam are arranged at the top ends of the two side walls of the reinforcing support. The reinforcing support of the rear floor effectively reduces deformation of overlap edges of the rear wheel hoods and the rear longitudinal beam, improves the fatigue resistance of the rear wheel hoods, and prevents the rear wheel hoods from being prone to cracks.

Description

technical field [0001] The invention relates to parts of automobiles, in particular to an automobile rear floor reinforcement bracket. Background technique [0002] The connection structure between the existing automobile rear floor and surrounding parts is as follows: Figure 4 As shown, it includes a rear floor 2, a rear wheel house 3, a rear longitudinal beam 4, a rear wheel house reinforcement 5, a rear wheel house support 6 and a storage board 7. The rear longitudinal beam 4 is located under the rear floor 2, respectively Welded with the lower surface and side flanging of the rear floor 2, the rear wheelhouse 3 is located on the outside of the rear floor 2, its lower end is welded with the rear longitudinal beam 4, its upper end is welded with a rear wheelhouse reinforcement 5, and the storage plate 7 is welded with the rear wheel house reinforcement 5, and the rear wheel house support member 6 is welded between the lower surface of the storage board 7 and the inner sur...

AI Technical Summary

Problems solved by technology

[0003] When the rear wheel house receives the force F transmitted from the chassis of the car, the force F passes upward through the rear wheel house reinforcement 5, the rear wheel house support 6, and the storage plate 7 to transmit the force f1 to the upper part of the vehicle body and the other side, and passes through the downward path. The rear wheel house 3 transmits the force f2 to the outer side of the rear longitudinal beam 4, and the additional bending moment M makes the overlapping edge between the lower end of the rear wheel house 3 and the rear longitudinal beam 4 easy to deform; because the effect of f2 on sharing the force is not good, f1 is relatively large As a result, the additional bending moment M is large, and under the alternating load of the chassis, fatigue damage to the rear wheel cover is prone to occur, resulting in cracks in the body and affecting the service life of the body

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