CN219428064U - Anti-collision beam behind widening of lightweight matching assembly requirement - Google Patents

Abstract

The utility model provides a anticollision roof beam behind widening of lightweight matching assembly requirement, includes the crossbeam and is located the energy-absorbing box of crossbeam both sides, the crossbeam is cavity structure, is equipped with the reinforcing plate along its length in the cavity of crossbeam, and the section of crossbeam is whole to be narrow down wide structure, and the section is formed by upper portion rectangle, middle part trapezoidal and the trapezoidal combination of lower part. The rear anti-collision beam has the main advantages that: the cross beam section adopts a geometric shape with a narrow upper part and a wide lower part, the position of the upper part is reserved for yielding the position of the spare tire, and the position of the lower part is wider to meet the performance requirement; through the improved design of the cross beam section, the design boundary can be met without cutting off the middle interference part of the rear anti-collision beam, the processing procedures are reduced, the material utilization rate is improved, and the processing cost of parts is reduced; the energy-absorbing box is improved and designed according to the section characteristics of the cross beam, so that the stability and reliability of connection between the energy-absorbing box and the cross beam and between the energy-absorbing box and a vehicle body are ensured.

Description

Anti-collision beam behind widening of lightweight matching assembly requirement

Technical Field

The utility model relates to an automobile safety part, in particular to a lightweight widened rear anti-collision beam matched with assembly requirements.

Background

Along with the continuous increase of the quantity of the automobile, people travel more and more conveniently and rapidly, and energy conservation, environmental protection, safety and intelligence become the direction of automobile development. The development of low-energy consumption, low-emission and even zero-emission automobiles is a key concern for the industry in the face of two major problems of energy and environment in the current world. Automobile weight reduction plays a vital role in reducing emissions and reducing energy consumption. Under urban working conditions, the energy consumption of the automobile is mostly related to the self mass, and from the viewpoint of the driving performance of the automobile, the light weight can bring improvement of acceleration performance, braking performance, steering performance and climbing performance. Therefore, light weight has a great development prospect. Of course, the light weight is required to ensure safety and comfort of the automobile. On the premise of not sacrificing any safety and comfort, the improvement of economy and dynamic property is a real goal of light weight by means of a light weight technology. At present, many vehicle types in the market adopt aluminum alloy anti-collision beams or ultra-high strength rolling anti-collision beams meeting the light weight requirement, and the cross section of the common anti-collision beam is generally of an up-down equal-width structure, such as a square shape, a Chinese character 'ri' shape, a Chinese character 'mu' shape and the like. For the rear anti-collision beam of the automobile, the middle interference part of the rear anti-collision beam needs to be partially cut off when the position of avoiding the spare tire is considered, so that the design boundary requirement is met. The problems with this conventional approach are: the processing procedure and the processing cost of parts are increased; the material utilization rate is reduced; the processing period is prolonged.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provide the wide-width rear anti-collision beam which ensures the modeling and installation requirements of the cross beam under the condition of meeting the performance requirements, has economical efficiency and relatively simple process and is light in weight and matched with the assembly requirements.

The utility model is realized by the following technical scheme:

the utility model provides a anticollision roof beam behind widening of lightweight matching assembly requirement, includes the crossbeam and is located the energy-absorbing box of crossbeam both sides, the crossbeam is cavity structure, is equipped with the reinforcing plate along its length in the cavity of crossbeam, and the section of crossbeam is whole to be narrow down wide structure, and the section is formed by upper portion rectangle, middle part trapezoidal and the trapezoidal combination of lower part.

Above-mentioned anticollision roof beam behind widening of lightweight matching assembly requirement, the energy-absorbing box includes energy-absorbing box body, mounting panel and support, and the energy-absorbing box body is the cube of cavity, and the first junction surface of energy-absorbing box body matches the laminating with the crossbeam medial surface and is connected, and the second junction surface of energy-absorbing box body is the plane, and the second junction surface welds with the mounting panel, and the support is L shape, and the support connection mounting panel, energy-absorbing box body are through mounting panel and support connection automobile body.

The width of the top of the section is B1, the width of the bottom of the section is B2, and the value of B1/B2 is greater than 1/3.

Above-mentioned anticollision roof beam behind widening of lightweight matching assembly requirement, additional strengthening is the reinforcing plate, and the reinforcing plate is located the upper portion rectangle of crossbeam section and the trapezoidal junction in middle part.

Above-mentioned anticollision roof beam behind widening of lightweight matching assembly requirement, additional strengthening sets up the rib of buckling indent at the crossbeam medial surface, and the bottom surface of rib indent is laminated with the lateral surface of crossbeam.

The rear anti-collision beam has the main advantages that: 1. the cross beam section adopts a geometric shape with a narrow upper part and a wide lower part, the position of the upper part is reserved for yielding the position of the spare tire, and the position of the lower part is wider to meet the performance requirement; through the improved design of crossbeam section, need not to carry out excision processing with the middle interference part of back crashproof roof beam, can satisfy the design boundary, reduced processing procedure, improved material utilization, reduced the processing cost of part. 2. The energy-absorbing box is improved and designed according to the section characteristics of the cross beam, so that the stability and reliability of connection between the energy-absorbing box and the cross beam and between the energy-absorbing box and a vehicle body are ensured. 3. The whole aluminum alloy or the ultra-high strength steel material is adopted, and the light weight requirement is met under the condition of ensuring the performance.

Drawings

The utility model is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a left side view (not to scale) of FIG. 1;

FIG. 3 is a cross-sectional view (not to scale) of FIG. 1, A-A;

FIG. 4 is a schematic perspective view of the present utility model;

FIG. 5 is a top view of FIG. 1;

FIG. 6 is a section B-B of FIG. 5 (not to scale);

FIG. 7 is a cross-sectional view of a rolled beam of ultra high strength steel;

FIG. 8 is a schematic perspective view of a crash box;

fig. 9 is a schematic view of the use state of the present utility model.

The list of the reference numerals in the drawings is: 1. the energy-absorbing box comprises a cross beam, 2, an energy-absorbing box body, 3, a mounting plate, 4, a bracket, 5, a reinforcing plate, 6, a spare tire, 7 and reinforcing rib strips.

Detailed Description

Referring to fig. 1-5, the present utility model is a rear impact beam for an automobile, comprising a cross beam and an energy absorber box. The present utility model provides an improved design of the cross beam based on meeting certain vehicle model design boundary conditions and without having to perform a partial cutting process on the cross beam. The whole of the cross beam 1 is of a variable curvature structure, the middle part of the cross beam in the length direction is an arc-shaped section, the two sides of the cross beam are straight-line sections, and the length of the straight-line sections is not less than 100mm. The advantage of this structure is can adapt to the installation demand of whole car to possess sufficient intensity. The cross beam is of a cavity structure, the whole cross beam is of a structure with a narrow upper part and a wide lower part, and as can be seen from fig. 3, the cross beam is formed by combining an upper rectangle, a middle trapezoid and a lower trapezoid, the middle trapezoid and the lower trapezoid are both unilateral trapezoids, and the bevel edge corresponds to the spare tire. The width of the top of the section is B1, the width of the bottom is B2, and the value of B1/B2 is more than 1/3. The structure with narrow upper part and wide lower part has the following advantages: the narrower part of the upper part leaves a yielding position for the hub position, and a yielding space is reserved for the spare tire 6; the wider part of the lower part meets the strength performance requirement of the cross beam.

In order to further improve the strength of the cross beam, a reinforcing structure is arranged in the cavity of the cross beam along the length direction of the cross beam, the reinforcing structure of one embodiment of the utility model is that a reinforcing plate 5 connected with the inner wall of the cavity is arranged in the cavity of the cross beam, the reinforcing plate is positioned at the joint of the upper rectangle and the middle trapezoid of the cross beam section, as shown in fig. 6, and the embodiment is applicable to the cross beam made of aluminum alloy materials; the reinforcing structure of the other embodiment is that the inner side surface of the beam is bent and concaved to form the reinforcing rib 7, the concave bottom surface of the reinforcing rib is attached to the outer side surface of the beam, as shown in fig. 7, and the embodiment is applicable to the rolled beam made of ultra-high strength steel materials.

Referring to fig. 2, 5 and 8, the energy-absorbing box symmetrically installed at two sides of the beam comprises an energy-absorbing box body 2, a mounting plate 3 and a bracket 4, wherein the energy-absorbing box body is in a cube shape of a cavity, the energy-absorbing box body is made of an aluminum alloy extrusion profile, the energy-absorbing box body is welded with the mounting plate, the mounting plate is connected with the bracket through bolts, and the energy-absorbing box body is connected with a vehicle body through the mounting plate and the bracket. The energy-absorbing box body is provided with two connecting surfaces, wherein the first connecting surface is connected with the inner side surface of the cross beam, the upper edge and the lower edge of the first connecting surface are straight edges, the edges on two sides are curved edges, and the curved edges of the cross beam made of aluminum alloy are matched, attached and welded with the inner side of the cross beam; the rolling beam made of ultra-high strength steel is connected with the energy absorption box through bolts. The second connecting surface of the energy-absorbing box body is a plane and is fixedly connected with the mounting plate.

Fig. 9 is a schematic view of the use state of the present utility model. The rear anti-collision beam ensures high bending resistance of the beam and simultaneously ensures the modeling and assembly requirements of the outside of the beam and an automobile through the up-down widening beam structure design, and simultaneously achieves the effect of light weight of the automobile.

Claims (5)

1. The utility model provides a anticollision roof beam behind widening of lightweight matching assembly requirement, includes crossbeam and is located the energy-absorbing box of crossbeam both sides, its characterized in that: the cross beam is of a cavity structure, a reinforcing structure is arranged in the cavity of the cross beam along the length direction of the cross beam, the whole cross beam is of a structure with a narrow upper part and a wide lower part, and the cross beam is formed by combining an upper rectangle, a middle trapezoid and a lower trapezoid.

2. The lightweight, matched-to-fit, required-width rear impact beam of claim 1, wherein: the energy-absorbing box comprises an energy-absorbing box body, a mounting plate and a bracket, wherein the energy-absorbing box body is a cube with a cavity, a first connecting surface of the energy-absorbing box body is matched, attached and connected with the inner side surface of the cross beam, a second connecting surface of the energy-absorbing box body is a plane, the second connecting surface is welded with the mounting plate, the bracket is L-shaped and is connected with the mounting plate, and the energy-absorbing box body is connected with a vehicle body through the mounting plate and the bracket.

3. The lightweight matched-to-fit required width rear impact beam of claim 2, wherein: the width of the top of the truncated shape is B1, the width of the bottom of the truncated shape is B2, and the value of B1/B2 is more than 1/3.

4. A lightweight matched mount requirement widening rear bumper beam as set forth in claim 3, wherein: the reinforcing structure is a reinforcing plate, and the reinforcing plate is positioned at the joint of the upper rectangle and the middle trapezoid of the cross beam section.

5. A lightweight matched mount requirement widening rear bumper beam as set forth in claim 3, wherein: the reinforcing structure is characterized in that a bending concave rib is arranged on the inner side face of the cross beam, and the concave bottom face of the rib is attached to the outer side face of the cross beam.