Subframe and the car with it

Abstract

The invention discloses an auxiliary frame and an automobile. The auxiliary frame comprises a front cross beam, a rear cross beam, a left lower longitudinal beam, a right lower longitudinal beam, a left connecting part, a right connecting part, a left upper longitudinal beam and a right upper longitudinal beam. A front end and a rear end of the left lower longitudinal beam are respectively fixed onto the front cross beam and the rear cross beam, and a left lower energy absorption structure is arranged on the left lower longitudinal beam. A front end and a rear end of the right lower longitudinal beam are respectively fixed onto the front cross beam and the rear cross beam, and a right lower energy absorption structure is arranged on the right lower longitudinal beam. The left connecting part and the right connecting part are respectively arranged above the front cross beam. A front end and a rear end of the left upper longitudinal beam are respectively fixed onto the left connecting part and the rear cross beam, and a left upper energy absorption structure is arranged on the left upper longitudinal beam. A front end and a rear end of the right upper longitudinal beam are respectively fixed onto the right connecting part and the rear cross beam, and a right upper energy absorption structure is arranged on the right upper longitudinal beam. The auxiliary frame has large rigidity and strength, can well absorb collision energy when automobile is collided directly, the personnel safety of a driver and passengers in a cab is protected, and the safety of the whole automobile is improved.

Description

technical field [0001] The invention relates to the technical field of automobile construction, in particular to an auxiliary frame and an automobile with the same. Background technique [0002] As an important part of the car suspension, the sub-frame of the car is a bridge connecting the body and the wheels. At the same time, the sub-frame can also be used to connect and support the engine, steering system and swing arm. [0003] Considering the vehicle's requirements for handling stability, it is hoped that the greater the stiffness of the suspension, the better. Therefore, the sub-frame of a car is usually stamped and formed by multiple pieces of high-strength steel plates with a thickness of about 2mm. The whole vehicle with this kind of sub-frame has high suspension rigidity and good handling performance. However, since the subframe is made of steel, its weight is heavy, and its fuel economy is not good. From the perspective of cushioning and energy absorption, the de...

AI Technical Summary

Problems solved by technology

However, since the subframe is made of steel, its weight is heavy, and its fuel economy is not good. From the perspective of cushioning and energy absorption, the deformation of the subframe is small in the event of a frontal collision of the vehicle, so it cannot play the role of cushioning and energy absorption. , the impact force will be directly transmitted to the cab through the sub-frame, threatening the safety of the driver and passengers, and the safety of the whole vehicle is poor

[0004] In some models, in order to improve the collision safety of the vehicle, a buffer energy-absorbing module is added to the front end of the sub-frame. Although this method improves the collision safety of the vehicle to a certain extent, it will inevitably increase the front suspension of the vehicle. Length, affects the layout of the vehicle

[0005] If the subframe is made of aluminum alloy, although it can improve the collision safety, reduce the weight of the vehicle, and obtain better fuel economy, the cost of aluminum alloy materials is too high, so there are few applications

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