CN204567770U - A kind of floor side member of vehicle body - Google Patents

Abstract

The utility model discloses a rear longitudinal beam of a vehicle body, which comprises a front beam and a rear beam connected at the end of the front beam, the front beam includes an inner side plate and an outer side plate matched with the inner side plate, the inner side plate The outer wall of the plate is butted with the inner wall of the outer plate to form a front beam with a closed section, the inner plate is casted from aluminum, the outer plate is stamped from steel, and the rear beam is extruded from aluminum. The rear longitudinal beam of the vehicle body provided by the utility model has simple structure and convenient assembly, and can effectively reduce the overall weight of the rear longitudinal beam on the basis of meeting the rear collision performance requirements of the automobile body.

Description

A rear longitudinal beam of a vehicle body

technical field

The utility model relates to a rear longitudinal beam, in particular to a rear longitudinal beam of a vehicle body.

Background technique

The rear longitudinal beam is the main component of the car body. The traditional rear longitudinal beam is usually connected to the body by spot welding, and several chassis mounting interfaces need to be set on the rear longitudinal beam to install the suspension control arm. Chassis parts such as springs and shock absorbers. In order to meet the rear collision performance requirements of the automobile body and avoid damage to the oil pipe of the rear body, the rear longitudinal beam of the traditional body is usually composed of stamped sheet metal parts, which are relatively thick, so it is difficult to meet the lightweight design requirements of the car, and the traditional body The rear longitudinal beam of the new version also needs an additional small bracket to realize the chassis mounting interface, which further increases the weight of the rear longitudinal beam.

Utility model content

Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a rear longitudinal beam of a vehicle body, which can effectively reduce the overall weight of the rear longitudinal beam on the basis of meeting the rear collision performance requirements of the automobile body.

The purpose of this utility model is achieved through the following technical solutions:

A rear longitudinal beam of a vehicle body, comprising a front beam and a rear beam connected to the end of the front beam, the front beam includes an inner panel and an outer panel adapted to the inner panel, the outer wall of the inner panel is connected to the The inner walls of the outer panels are butted to form a front beam with a closed section, the inner panel is casted from aluminum, the outer panel is stamped from steel, and the rear beam is extruded from aluminum.

Further, the inner panel is provided with reinforcing ribs.

Further, the reinforcing ribs are distributed on the inner panel in a grid pattern.

Further, a chassis installation interface is stamped on the inner side plate.

Further, the rear beam is extruded from an aluminum material with equal cross-section.

Further, the inner panel is fixedly connected to the outer panel by one or more of screws, rivets and structural glue.

Further, the rear beam is fixed on the front beam by rivets.

The rear longitudinal beam of the vehicle body provided by the utility model has simple structure and convenient assembly, and can effectively reduce the overall weight of the rear longitudinal beam on the basis of meeting the rear collision performance requirements of the automobile body.

Description of drawings

Fig. 1 is the schematic diagram of the rear longitudinal beam of a kind of preferred vehicle body of the present utility model;

Fig. 2 is an exploded view of a rear side member of the vehicle body shown in Fig. 1 .

Detailed ways

A preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings. Wherein the same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer ” refer to directions towards or away from the geometric center of a particular part, respectively.

As shown in Figures 1 and 2, the rear longitudinal beam of the vehicle body provided by the utility model includes a front beam 1 and a rear beam 2 connected to the end of the front beam 1. In order to meet assembly requirements, the utility model provides a rear longitudinal beam with The overall structure and shape of the rear longitudinal beam in the prior art is consistent, that is, the front beam 1 of the rear longitudinal beam has a certain curvature according to assembly requirements, and the rear beam 2 of the rear longitudinal beam is a straight beam.

As shown in Figure 2, the front beam 1 of the present utility model includes an inner panel 11 and an outer panel 12 adapted to the inner panel 11, that is to say, the inner panel 11 and the outer panel 12 of the present utility model have the same The outer wall of the inner panel is butted with the inner wall of the outer panel to form a front beam with a closed section. Designing the front beam 1 as a beam with a closed section can effectively improve the structural strength of the rear longitudinal beam.

In order to reduce the weight of the rear longitudinal beam and meet the requirements of lightweight design, the inner panel 11 of the present invention is cast from aluminum, and the rear beam 2 of the present invention is extruded from aluminum. Those skilled in the art should understand that aluminum The aluminum material has a lower density than the steel used to prepare the rear longitudinal beam in the prior art, so when the same performance is satisfied, the use of aluminum can effectively reduce the weight of the rear longitudinal beam. Of course, in order to ensure the strength of the rear longitudinal beam and reduce the cost, the outer plate 12 of the present invention is stamped and formed by steel.

The rear longitudinal beam of the vehicle body provided by the utility model is a symmetrical structure with respect to the central axis of the vehicle, and the rear longitudinal beam of the vehicle body shown in Fig. 1 and Fig. 2 is a side rear longitudinal beam in the symmetrical structure. When assembling, firstly, the inner panel 11 and the rear beam 2 are fixedly connected to form an assembly, and then the outer panel 12 is connected with the assembly to form the rear longitudinal beam as shown in Fig. 1 and Fig. 2, and the symmetrically arranged The two rear longitudinal beams are respectively fixed on the rear floor of the vehicle body by spot welding.

It can be seen that the rear longitudinal beam of the vehicle body provided by the utility model is simple in structure and easy to assemble. parts, effectively reducing the weight of the rear longitudinal beam.

As a preferred solution of the present utility model, the inner panel 11 is provided with reinforcing ribs, of course, the reinforcing ribs are cast integrally with the inner panel 11 by aluminum material. It should be understood by those skilled in the art that the rib structure helps to enhance the structural strength of the inner panel 11, avoiding problems such as breaking and crushing of the front beam 1 during a collision, and effectively reducing the structure of the oil pipe and other structures of the vehicle body. affected by the impact of the collision. Of course, setting reinforcing ribs on the inner panel 11 is only a preferred solution for increasing the structural strength of the inner panel 11 in the utility model. Other ways of strengthening the structure will not be repeated here.

On the basis of the above-mentioned embodiments, the reinforcing ribs are preferably distributed on the inner panel 11 in a grid shape, and the grid-like reinforcing ribs can improve the structural strength of the inner panel 11 from multiple angles. Technicians can set the number of ribs in different directions according to the structural strength requirements of the inner panel 11 . Certainly, the grid-shaped reinforcing rib is only a preferred solution of the present invention, and the present utility model can also adopt methods known to those skilled in the art to provide reinforcing ribs, which will not be repeated here.

In order to improve the adaptability of the installation of the rear longitudinal beam and the chassis, the utility model preferably stamps a chassis installation interface on the inner side panel 11, and the chassis installation structure can stamp the inner side panel 11 integrally according to different assembly requirements different locations. Compared with the prior art, the rear longitudinal beam provided by the utility model does not need to introduce an additional bracket structure for connecting with chassis parts, so it can effectively avoid the weight brought by the introduction of the bracket structure and help reduce the The weight of the rear longitudinal beam meets the design needs of lightweight vehicles and improves the fuel economy of vehicles.

As a preferred solution of the utility model, the back beam 2 is extruded from an aluminum material with equal cross-section, and the extruded aluminum with equal cross-section can absorb energy through its own uniform collapse when colliding, and the back beam 2 provided by the utility model can effectively protect Structures such as the fuel tank in the body are not damaged by the impact of the collision. In addition, the density of aluminum is lower than that of steel, which can effectively reduce the weight of the rear longitudinal beam under the premise of achieving the same energy absorption effect.

During assembly, the inner panel 11 of the present invention is preferably fixedly connected to the outer panel 12 by one or more of screws, rivets and structural adhesives, and the rear beam 2 is preferably fixed to the front beam 1 by rivets. superior. Those skilled in the art should understand that the above-mentioned method for assembling the rear longitudinal beam is only a preferred solution of the present invention, and the present invention can also adopt other fixing methods known to those skilled in the art, which will not be repeated here. repeat.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the various embodiments of the present invention. .

Claims (7)

1. A rear longitudinal beam of a vehicle body, characterized in that it comprises a front beam and a rear beam connected at the end of the front beam, the front beam includes an inner panel and an outer panel adapted to the inner panel, the The outer wall of the inner panel is docked with the inner wall of the outer panel to form a front beam with a closed section. The inner panel is casted from aluminum, the outer panel is stamped from steel, and the rear beam is extruded from aluminum. 2 . The rear longitudinal member of the vehicle body according to claim 1 , wherein a reinforcing rib is provided on the inner side panel. 3 . 3 . The rear longitudinal beam of the vehicle body according to claim 2 , wherein the reinforcing ribs are distributed on the inner panel in a grid pattern. 4 . 4 . The rear longitudinal beam of a vehicle body according to claim 1 , wherein a chassis installation interface is stamped on the inner side plate. 5 . 5 . The rear longitudinal beam of the vehicle body according to claim 1 , wherein the rear beam is extruded from an aluminum material with equal cross-section. 6 . 6. The rear longitudinal beam of a vehicle body according to any one of claims 1-5, wherein the inner panel is fixedly connected to the outer panel by one or more of screws, rivets and structural glue. 7. The rear longitudinal beam of the vehicle body according to claim 6, wherein the rear beam is fixed to the front beam by rivets.