CN214689370U - Vehicle anti-collision beam energy absorption box - Google Patents

Abstract

The utility model provides a vehicle anticollision roof beam energy-absorbing box belongs to vehicle anticollision roof beam technical field, include: the cross section of the box body is polygonal, circular, elliptical or star-shaped, the foamed aluminum substrate is arranged in the box body and is provided with a hollow deformation part, and the foamed aluminum substrate is provided with a plurality of air hole structures. The utility model has the advantages that: the energy absorption box optimizes the overall shape and structure on the basis of the material of the foamed aluminum, so that the energy absorption box is favorable for absorbing energy in the collision process, and meanwhile, the shape is kept better in the collision process and is not easy to break.

Description

Vehicle anti-collision beam energy absorption box

Technical Field

The utility model belongs to the technical field of automobile-used crashproof roof beam, a automobile-used crashproof roof beam energy-absorbing box is related to.

Background

The energy absorption box is an energy absorption buffer component positioned between the anti-collision beam and the longitudinal beam, and the anti-collision beam is connected with the longitudinal beam through the energy absorption box; the traditional automobile anti-collision beam energy absorption box is processed by adopting materials such as plastics, stamping steel plates, aluminum alloy and the like. The plastic anti-collision beam system has low strength and poor energy absorption effect; the impact beam system made of the stamped steel plate has a general energy absorption effect and a heavy weight; the aluminum alloy material has high requirements on material performance and high cost.

The foamed aluminum material has the excellent performances of small density, strong impact absorption capacity, high temperature resistance, high electromagnetic shielding property, strong weather resistance, easy processing, high forming precision and the like, and is mainly used in the fields of carriage sound insulation materials, electromagnetic shielding and the like.

Therefore, at present, a part of energy absorption boxes adopt a foamed aluminum structure, for example, a utility model patent with application number 201922347517.9 discloses a passenger car anti-collision beam assembly, which comprises an anti-collision beam shell, wherein the anti-collision beam shell comprises an arc-shaped shell formed by a rectangular frame extending continuously along an arc line path, the continuous wall thickness of the arc-shaped shell gradually changes in a gradient manner from the middle to two sides of the arc line path, and the anti-collision beam shell is filled with a truss structure; energy absorption boxes are fixedly arranged at two end parts of one side of the anti-collision beam shell facing to the circle center of the arc line respectively, and foamed aluminum materials are filled in the energy absorption boxes. In addition, a utility model patent that application number is 201720529558.8 discloses a repacking foamed aluminum anticollision roof beam structure based on traditional car anticollision roof beam, include: crossbeam and mounting panel, the mounting panel sets up at the crossbeam both ends be connected through the energy-absorbing box between crossbeam and the mounting panel, the inside packing of energy-absorbing box has foamed aluminum, foamed aluminum's processing mode adopts machining, and the welding equipment, perhaps foamed aluminum is through the direct foaming shaping of secondary foaming method in the inside of energy-absorbing box.

The energy absorption boxes adopt foamed aluminum structures, but the foamed aluminum is simply arranged in the energy absorption boxes, the shapes and the structures of the energy absorption boxes are not optimized, and energy can be absorbed only through the material characteristics of the energy absorption boxes, so that the energy absorption and buffering performances are insufficient, and certain improvement space is provided.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, a vehicular anticollision roof beam energy-absorbing box is proposed.

The purpose of the utility model can be realized by the following technical proposal: an automotive impact beam energy absorption box comprising: the cross section of the box body is polygonal, circular, elliptical or star-shaped, the foamed aluminum substrate is arranged in the box body and is provided with a hollow deformation part, and the foamed aluminum substrate is provided with a plurality of air hole structures.

Preferably, the cross section of the hollow deformation part is polygonal, circular, elliptical or star-shaped, and the hollow deformation part is arranged along the length direction of the foamed aluminum substrate.

Preferably, the box body is of a three-layer composite structure, and the box body comprises a first metal thin plate, a foamed aluminum plate and a second metal thin plate which are sequentially connected from inside to outside.

Preferably, the box body is of a composite structure and comprises an organic polymer layer and a foamed aluminum plate which are sequentially connected from inside to outside.

Preferably, the surface of the box body is covered with a paint layer.

Preferably, the air hole structure comprises an open air hole, a closed air hole and a through air hole.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the energy absorption box optimizes the overall shape and structure on the basis of the material of the foamed aluminum, so that the energy absorption box is beneficial to absorbing energy in the collision process, and meanwhile, the shape is kept better in the collision process, so that the energy absorption box is not easy to break.

2. The air hole structure can greatly improve the energy absorption effect and protect the main body structure of the vehicle body in the collision process.

3. The box body is a three-layer composite sandwich structure, the inner side and the outer side of the box body are respectively provided with two layers of metal sheets, the middle of the box body is provided with a foamed aluminum plate, the box body with the structure can be reliably combined with a foamed aluminum substrate to form a whole, and the foamed aluminum substrate inside the box body can be reliably protected.

Drawings

Fig. 1 is the utility model discloses a structural schematic diagram of automobile-used crashproof roof beam energy-absorbing box.

Fig. 2 is a schematic structural diagram of the rectangular box of the present invention.

Fig. 3 is a schematic diagram of the utility model when the cross section of the box body is triangular and the cross section of the hollow deformation part is circular.

Fig. 4 is a schematic diagram of the present invention when the cross section of the box body is rectangular and the cross section of the hollow deformation portion is polygonal.

Fig. 5 is a schematic diagram of the present invention when the cross section of the box body is a star shape and the cross section of the hollow deformation portion is a rectangle.

Fig. 6 is a schematic view of the cross section of the hollow deformation portion of the present invention in a star shape.

Fig. 7 is a diagram of the utility model with a three-layer composite structure.

Fig. 8 is a schematic view of the case body of the present invention having a composite structure of organic polymer material and metal material.

In the figure, 100, a cartridge; 110. a first metal thin plate; 120. a foamed aluminum sheet; 130. a second metal thin plate; 140. an organic polymer layer; 150. a paint layer; 200. a foamed aluminum matrix; 210. a hollow deformation part.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2, 3, 4, 5, and 6, a crash box for a vehicle includes: the energy absorption box comprises a box body 100 and a foamed aluminum matrix 200, and is applied to an anti-collision beam, specifically, the anti-collision beam is of a slightly arc-shaped long strip structure, the front end of the box body 100 is fixed with the side end of the anti-collision beam, the rear end of the box body 100 is fixed with a longitudinal beam, so that two sides of the anti-collision beam are connected with the two longitudinal beams, and the energy absorption box is positioned between the two longitudinal beams to absorb energy in a collision process and prevent the longitudinal beams from being damaged.

The foamed aluminum substrate 200 is a filler made of foamed aluminum, a cavity is formed in the box body 100, the foamed aluminum substrate 200 can be filled in the box body 100, and the mass of the energy absorption box can be reduced by using the foamed aluminum substrate 200.

The cross-section of the box 100 is polygonal, circular, oval or star-shaped, preferably, in actual structure, the cross-section of the box 100 can be rectangular, parallelogram, circular, oval, triangular, polygonal, pentagonal or polygonal star-shaped, and the box 100 with the shape can be better combined with the foamed aluminum matrix 200 to form a structure which is beneficial to absorb energy and prevent fragmentation.

The foamed aluminum substrate 200 is disposed in the case 100, the foamed aluminum substrate 200 is formed with a hollow deformation portion 210, and the foamed aluminum substrate 200 is provided with a plurality of air hole structures.

Preferably, the foamed aluminum matrix 200 is pure aluminum or an aluminum-based alloy, which may have a density of 0.1g/cm3-3.0g/cm 3; the porosity is 1-99%; and it is worth to say that the pore diameter of the pore structure can be 0.01mm-20 mm; the air hole structure can be in irregular shapes such as spherical shape, ellipsoidal shape and the like, the energy absorption effect can be greatly improved, and the main body structure of the vehicle body is protected to a greater extent in the collision process.

In order to optimize the structure of the foamed aluminum matrix 200, so that the foamed aluminum matrix 200 can absorb larger impact energy, the hollow deformation part 210 is specially arranged, so that the foamed aluminum matrix 200 has better deformation capacity, the energy absorption in the collision process is more facilitated, meanwhile, the shape is better maintained in the collision process, and the energy absorption box is not easy to break.

As shown in fig. 1, 2, 3, 4, 5, and 6, in the above embodiments, the cross section of the hollow deformation portion 210 is polygonal, circular, elliptical, or star-shaped, and the hollow deformation portion 210 is disposed along the length direction of the foamed aluminum substrate 200.

Preferably, the hollow deformation portion 210 is a cavity structure arranged along the length direction of the foamed aluminum, that is, two ends of the hollow deformation portion 210 face the anti-collision beam and the longitudinal beam respectively, and the cross section of the hollow deformation portion 210 can be rectangular, parallelogram, circular, oval, triangular, polygonal, pentagram, or multi-pointed star, so that the deformation energy absorption performance of the foamed aluminum matrix 200 can be greatly enhanced, the energy absorption during the collision process is facilitated, and the shape is better maintained and is not easy to break during the collision.

As shown in fig. 1 and 7, in the above embodiment, the box body 100 has a three-layer composite structure, and the box body 100 includes a first metal thin plate 110, an aluminum foam plate 120, and a second metal thin plate 130, which are sequentially connected from the inside to the outside.

Preferably, the case 100 has a three-layer composite sandwich structure, in which two metal sheets are disposed on the inner and outer sides, respectively, and the aluminum foam sheet 120 is disposed in the middle, and the case 100 of this structure can be reliably combined with the aluminum foam substrate 200 to form a whole, and can reliably protect the aluminum foam substrate 200 inside.

As shown in fig. 1 and 8, in the above embodiment, the cartridge 100 has a composite structure, and the cartridge 100 includes an organic polymer layer 140 and an aluminum foam plate 120 which are sequentially connected from the inside to the outside.

The box 100 is a composite sandwich structure, the outermost side is a foamed aluminum plate 120, the inner side is an organic polymer layer 140, and the organic polymer layer 140 may be made of organic polymer materials such as rubber, polyurethane, and the like.

The case 100 of this structure can be reliably integrated with the aluminum foam substrate 200 to form a single body, and can reliably protect the aluminum foam substrate 200 inside.

Here, it should be noted that a three-layer composite structure may be adopted, that is, the inner and outer sides are both organic polymer layers 140, and the middle is an aluminum foam plate 120.

As shown in fig. 1 and 7, in addition to the above embodiments, the surface of the box 100 is covered with a paint layer 150. Preferably, the paint layer 150 can provide an anti-corrosion effect as a surface protection for the case 100.

As shown in fig. 1 and 7, in addition to the above embodiments, the air hole structure includes an open air hole (not shown), a closed air hole (not shown), and a through air hole (not shown). Preferably, the air hole structure includes a plurality of air holes, and the air holes can be divided into open air holes (i.e., air holes with one end closed and the other end open), closed air holes (air holes with both ends closed) and through air holes (air holes with both ends through), according to the shape, so that the energy absorption effect can be greatly improved through the air holes, and the vehicle body main structure can be greatly protected in the collision process.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (6)

1. The utility model provides an automobile-used crashproof roof beam energy-absorbing box which characterized in that includes: the cross section of the box body is polygonal, circular, elliptical or star-shaped, the foamed aluminum substrate is arranged in the box body and is provided with a hollow deformation part, and the foamed aluminum substrate is provided with a plurality of air hole structures.

2. A vehicle impact beam energy absorption box according to claim 1, wherein: the cross section of the hollow deformation part is polygonal, circular, elliptical or star-shaped, and the hollow deformation part is arranged along the length direction of the foamed aluminum substrate.

3. A crash beam energy absorption box for a vehicle as defined in claim 2, wherein: the box body is three-layer composite structure, and the box body includes first sheet metal, foamed aluminum plate and the second sheet metal that connects gradually from inside to outside.

4. A crash beam energy absorption box for a vehicle as defined in claim 2, wherein: the box body is of a composite structure and comprises an organic polymer layer and a foamed aluminum plate which are sequentially connected from inside to outside.

5. A vehicle impact beam energy absorption box according to claim 3, wherein: the surface of the box body is covered with a paint layer.

6. A crash beam energy absorption box for a vehicle as defined in claim 2, wherein: the air hole structure comprises an opening air hole, a closed air hole and a through air hole.

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