Automobile cross beam and longitudinal beam connecting structure assembly

Abstract

The invention discloses an automobile cross beam and longitudinal beam connecting structure assembly. The assembly comprises a cross beam and a longitudinal beam connected with the cross beam, the cross beam is at least provided with a first mounting part and a second mounting part positioned above the first mounting part, and the longitudinal beam at least comprises a first longitudinal plate anda second longitudinal plate located above the first longitudinal plate. The first installation part is in lap joint with the first longitudinal plate, and the second installation part is in lap jointwith the second longitudinal plate; and the first installation part is further fixedly connected with the first longitudinal plate, and / or the second installation part is further fixedly connected with the second longitudinal plate. The longitudinal beam is of a multi-layer structure, and the longitudinal beam and the cross beam are connected in a multi-layer lap joint and extra fixed connectionmode, so that the rigidity and strength of the lap joint structure are improved, and good bending and modal performance in the driving process is guaranteed.

Description

technical field [0001] The invention relates to an automobile body structure, in particular to an automobile crossbeam and longitudinal beam connection structure assembly. Background technique [0002] In the body development process, the overlap between the middle channel and the cabin assembly is a crucial place, and the overlap structure involves crash safety, bending, modal and other performances. Therefore, a good lap structure between the center tunnel and the cabin assembly must not only ensure collision safety, but also improve the comfort of the occupants. [0003] At present, the mainstream body-in-white structure in the market is steel body. In steel body, in order to meet the performance of collision safety, bending, modal and so on, two additional longitudinal beams are required at the lap of the middle channel and the cabin assembly as a strengthening structure. To ensure the above performance, this structure has the problems of complex overlapping structure, ...

AI Technical Summary

Problems solved by technology

[0003] At present, the mainstream body-in-white structure in the market is a steel body. In the steel body, in order to meet the performance of collision safety, bending, and modal, two additional longitudinal beams are required at the lap of the middle channel and the cabin assembly as a strengthening structure. To ensure the above performance, this structure has the problems of complex overlapping structure, difficult maintenance, and a large number of parts

For the aluminum alloy body, due to the limitation of the performance of the aluminum alloy material, its material strength is much lower than that of steel. If the structural design of the traditional steel body is adopted, the rigidity and strength of the installation point are difficult or even unable to meet the requirements.

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