Front rail structure of automobile body

Abstract

The invention discloses a front rail structure of an automobile body, which has a Z-shaped front rail extending along the fore and aft direction of the automobile body. The front rail comprises a transverse upper section and the cross section of the front rail in the fore and aft direction is of trench structure. The front rail structure is characterized in that a front reinforcing plate, a middle reinforcing plate and a rear reinforcing plate are respectively welded on the front, middle and rear parts in a trench on the upper section of the front rail; the upper edges of the three reinforcing plates are provided with turnup edges which are welded with the turnup edge of the upper edge of the upper section in a sticking manner; the front rail between the front side and the rear side of the front reinforcing plate is a buffer energy absorbing zone; the middle reinforcing plate and the rear reinforcing plate respectively encircle cavities with the front rail; a gap is reserved between the middle reinforcing plate and the rear reinforcing plate; and the rear end of the rear reinforcing plate is close to the rear end of the front rail. The invention is strengthened as a whole and can effectively absorb and attenuate the impact energy generated during automobile crash. In addition, the force transmission property of the rear force bearing zone is greatly enhanced and the rear force bearing zone can absorb more impact energy during deformation.

Description

technical field [0001] The invention relates to the front part of an automobile body, and more specifically relates to a front longitudinal beam structure of an automobile body. Background technique [0002] With the development of the automobile industry, the safety requirements for automobiles are getting higher and higher. When an accidental collision occurs, the automobile body is required to have a good energy-absorbing effect, so as to ensure the living space of the driver and passengers to the greatest extent, while minimizing the The deformation of the small cab is the most basic requirement. The nacelle at the front of the car, as the carrier for installing the engine and other components, must have sufficient strength and rigidity. In the event of a car collision, the nacelle is also responsible for protecting the occupants. The front longitudinal beam is located on both sides of the front of the car body. It is the main component that constructs the cabin and bea...

AI Technical Summary

Problems solved by technology

In an ideal state, when a vehicle is severely collided, the front part of the front side beam should be able to effectively absorb energy, and the rear part of the front side beam should be less deformed, so that the force is transmitted backward to the floor and even the entire body frame, so that the collision force is dispersed and absorbed, thereby Minimize the deformation of the cab to ensure the safety of the driver, but the existing front longitudinal beam structure cannot effectively meet this requirement

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