Automobile longitudinal beam inner plate assembly

Abstract

The invention discloses an automobile longitudinal beam inner plate assembly, which comprises a longitudinal beam inner plate and a reinforcement which is connected to the inner side of the longitudinal beam inner plate through a bolt, and is characterized in that: the reinforcement is a groove-shaped structural member which is integrally formed; the side face of the reinforcement is provided with a first lightening hole and a second lightening hole; and the side face of the reinforcement between the first lightening hole and the second lightening hole is also provided with a first boss and a second boss. The assembly is rational in structural design and difficult for bending deformation, and can fully absorb collision energy, so that acceleration peak in a collision process of a vehicle is reduced, and the integrity of the automobile and the safety of passengers are protected.

Description

technical field [0001] The invention relates to a vehicle body structure, in particular to a longitudinal beam inner plate assembly used for frontal collision of the vehicle. Background technique [0002] Automobile safety performance is an important indicator of modern automobile quality. How to protect the safety of occupants to the greatest extent and reduce the damage of automobiles in the event of automobile collision accidents is the goal of various automobile manufacturers. When a car collides, the longitudinal beam of the car is the most important energy-absorbing part, and its energy-absorbing effect directly affects the safety of the passenger compartment. [0003] The purpose of longitudinal beam design is: the front section of the longitudinal beam absorbs as much energy as possible, and the rear section does not deform as much as possible; so the stiffness of the front section should be lower than that of the rear section, which is to ensure that the peak accele...

AI Technical Summary

Problems solved by technology

[0004] Existing longitudinal beams are generally divided into two types: one is the laser tailor-welded longitudinal beam structure, the laser welding position of this structure is the front longitudinal beam of the engine mounting bracket, and the front and rear sections of the longitudinal beam are made of materials with different thickness properties. In a frontal collision, it is easier to make the front section of the longitudinal beam absorb energy and deform, and the rear section does not deform to ensure the integrity of the space, but it is more expensive

The other is the non-laser tailor-welded longitudinal beam structure, which is relatively low in cost, but the longitudinal beam is easy to bend and deform in a frontal collision, and cannot absorb energy well; the longitudinal beam of this structure includes the longitudinal beam outer plate assembly and the longitudinal beam assembly. Beam inner panel assembly, longitudinal beam inner panel assembly is composed of longitudinal beam inner panel and reinforcement (such as figure 1 , figure 2 , image 3 shown), where stiffeners (such as figure 2 As shown) is composed of two parts a and b, the distance between ab and ab is tens of millimeters, and its strength is not enough in the event of a collision. can

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