Reinforced body-in-white frame

Abstract

The invention discloses a reinforced body-in-white frame, which comprises a vehicle body front end frame, a lower vehicle body frame, a side wall frame, a top cover frame and a tail frame. The upper portion of the vehicle body front end frame is fixedly connected with the front portion of the top cover frame. The rear portion of the vehicle body front end frame is fixedly connected with the frontportion of the lower vehicle body frame. The rear portion of the lower vehicle body frame is fixedly connected with the front portion of the tail frame. The upper portion of the tail frame is fixedlyconnected with the rear portion of the top cover frame. The longitudinal section of a front buffer beam and the longitudinal section of an energy absorption box of the vehicle body front end frame areboth in a shape like a Chinese character 'mu', and anti-collision supporting plates are arranged in the middle of the front buffer beam and a front end module. According to the reinforced body-in-white frame, the energy absorption capacity of the energy absorption area of the vehicle body front structure in the head-on collision process is increased, the transverse rigidity and the forecabin yawing mode of the vehicle body front structure are improved, the head-on collision safety performance and the force transmission efficiency are improved, the overall strength of the vehicle body frame isimproved, and therefore the riding comfort is improved.

Description

technical field [0001] The invention relates to the technical field of automobile body-in-white, in particular to a reinforced body-in-white frame. Background technique [0002] The body frame is a closed cavity structure formed by body beams, longitudinal beams, columns and some reinforcements, and is the main body of the vehicle to bear the load and resist the impact of collisions. It can generally be divided into front-end frame, lower body frame, side wall frame, roof frame and tail frame. However, due to the differences in the market positioning, functional configuration, manufacturing strategy and engineering layout of the vehicle, the body frame also has different characteristics. [0003] Currently, there are two types of common passenger car body frames 1 . Such as Figure 1-3 It is a semi-load-bearing body frame 1, the front of which mainly transmits force through the front-middle-rear frame, and a small part of the force is distributed to the side walls and door...

AI Technical Summary

Problems solved by technology

[0004] 1) With the increase of vehicle weight and collision energy, increasing the stiffness of the front end of the body will easily lead to insufficient energy absorption of the front end of the body, and increasing the energy absorption of the weakened structure will easily lead to poor lateral stiffness and low yaw mode of the NVH front cabin;

[0005] 2) Frontal collision mainly relies on the front-middle-rear frame force transmission, and the force transmission ratio of each path is not harmonious, and the collision force is not dispersed enough at the overlap between the dash panel and the front frame. With the increase of vehicle weight and collision energy, it is easy to Cause excessive collision intrusion;

[0006] 3) The side wall reinforcement plate is incomplete, resulting in discontinuous strength of the side wall frame, which is easy to tear and fail under severe collision;

[0007] 4) There are few closed loops of the body frame, and the connection between the upper and lower body is weak, resulting in poor integrity of the body-in-white, such as the weak connection of the lower joint of the B-pillar, the weak connection between the rear wheel house reinforcement plate and the rear frame, and the weak connection between the rear frame and the rear frame. The frame has no cavity connection, etc., resulting in the inability to effectively absorb and disperse the energy generated by the collision during a collision, resulting in greater damage to the occupants

[0009] 1) The integral front girder and front girder sealing plate are adopted, resulting in heavy parts weight, low material utilization rate and high cost;

[0010] 2) The longitudinal beams of the middle aisle and the lower longitudinal beams of the front floor are not overlapped, and the integrity of the frame is lacking; Insufficient continuity of body frame strength;

[0011] 3) The reinforcement plate of the upper side sill of the side wall stops behind the C-pillar, resulting in insufficient continuity of the strength of the side wall frame;

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