Aluminum alloy profile for automobile energy absorption box

Abstract

The utility model discloses an automobile energy absorption box aluminum alloy section bar relates to automobile energy absorption box technical field, including the first connecting plate who is connected with bumper and the second connecting plate who is connected with the car body, the first connecting plate is opposite with the second connecting plate and sets up, first connecting plate surface sets up first casing, second connecting plate surface sets up second casing, through setting the cutting plate of occlusion guide pipe in the second casing, make overall structure when axial collapse occurs utilize the material characteristics of first casing, make first casing when collapse occurs under the action of pressure will gradually wrap second casing, in the process of wrapping, the guide pipe in first casing is pressed and cut by cutting plate, the resistance produced when pressing and cutting can slow down the collapse continues to occur to buffer the impact produced, make energy absorption box can when coping with smaller and slower impact and larger and faster impact can produce effective energy absorption effect, can guarantee the stability of energy absorption process.

Description

Technical Field

[0001] This utility model relates to the field of automotive energy-absorbing box technology, and in particular to an aluminum alloy profile for automotive energy-absorbing boxes. Background Technology

[0002] Aluminum alloy profiles are metal materials with specific cross-sectional shapes, made primarily of aluminum with the addition of other metallic elements through processes such as smelting and extrusion. The proportion of added metallic elements can be adjusted according to actual conditions to obtain different metallic properties.

[0003] The use of aluminum alloy profiles in automotive energy-absorbing boxes can ensure the structural strength of the energy-absorbing box while reducing the structural weight. In actual use, although aluminum alloy profiles have good axial and lateral support, they are prone to local instability or excessive deformation when collisions and compression occur, resulting in unstable energy absorption efficiency. They cannot provide predictable and efficient energy absorption like steel. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide an aluminum alloy profile for an automotive energy-absorbing box, which solves the problem that automotive energy-absorbing boxes made of aluminum alloy profiles are prone to local instability or excessive deformation during collisions and compressions, leading to unstable energy absorption efficiency.

[0005] The technical solution of this utility model is as follows: it includes a first connecting plate connected to the bumper and a second connecting plate connected to the vehicle body. The first connecting plate and the second connecting plate are arranged facing each other. A first shell is provided on the surface of the first connecting plate and a second shell is provided on the surface of the second connecting plate. The second shell and the first shell are connected by laser composite welding, wherein the diameter of the second shell is larger than that of the first shell.

[0006] The first housing has several evenly distributed ribs arranged in a centripetal manner inside, and a guide tube is arranged in a circular position inside the first housing, which is connected to the ribs.

[0007] The second housing contains an insertion tube. A cutting plate is arranged on the surface of the insertion tube with the insertion tube as the center. The cutting plate and the rib are arranged alternately. The surface of the cutting plate is provided with a toothed groove that matches the guide tube.

[0008] Furthermore, the first shell and its internal structure are integrally formed from aluminum alloy profiles, while the second shell and its internal structure are made of steel. The outer diameter of the second shell is matched with the inner diameter of the first shell, ensuring that the first shell can deform along the connection point with the second shell when subjected to impact, thereby wrapping the first shell around the outside.

[0009] Furthermore, both the first and second housings are hexagonal tubular structures, wherein ribs are provided in the first housing at each bend position to ensure that the first and second housings have sufficient lateral support, and the ribs enhance the internal support effect of the first housing to prevent excessive deformation of the first housing when subjected to impact.

[0010] Furthermore, the weld between the first housing and the second housing forms a downwardly inclined groove, and the inclined connecting groove forms a deformation guide groove between the first housing and the second housing, so that the deformation between the first housing and the second housing can be carried out along the deformation guide groove, ensuring that the first housing is deformed in the required direction.

[0011] Furthermore, the guide tube and rib plate inside the first housing are flush with the first housing.

[0012] Furthermore, the insertion tube and the cutting plate inside the second housing extend into the first housing, wherein the insertion tube extends into the guide tube, and the cutting plate is engaged with the guide tube through a toothed groove.

[0013] Furthermore, the part where the guide tube engages with the cutting plate is provided with a reinforcing groove. The guide tube engages with the toothed groove on the surface of the cutting plate through the reinforcing groove, ensuring that the guide tube moves in a predetermined direction when it is pressed and cut by the cutting plate, thus avoiding the twisting and deformation of the guide tube during the pressing and cutting process, which would cause the first housing to lose its axial support force.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. This utility model uses a first shell and a second shell made of two different materials to weld together to form an energy-absorbing box outer shell, so that the front and rear ends of the car energy-absorbing box have different metal properties. Tubular structures and reinforcing plates connecting the tubular structures are set in the first and second shells to enhance the overall structural strength, so that the overall energy-absorbing box has sufficient support in both the axial and lateral directions.

[0016] 2. This utility model also incorporates a cutting plate for the interlocking guide tube within the second housing. This allows the overall structure to utilize the material properties of the first housing during axial collapse. Under pressure, the first housing gradually envelops the second housing during collapse. During this enveloping process, the guide tube within the first housing is cut by the cutting plate. The resistance generated during cutting slows further collapse, thus buffering the impact. Furthermore, if the first housing completely envelops the second housing, and the second housing abuts against the first connecting plate, the pressure generated by the impact directly acts within the second housing. This allows the energy-absorbing box to effectively absorb energy from both smaller, gentler impacts and larger, faster impacts. Moreover, the segmented energy absorption structure of the first and second housings during larger, faster impacts ensures the stability of the energy absorption process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the second shell of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the first housing of this utility model;

[0020] Figure 4 This is a cross-sectional view of the overall structure of this utility model.

[0021] Reference numerals: 1. First connecting plate; 2. Second connecting plate; 3. First housing; 4. Second housing; 5. Rib; 6. Guide tube; 7. Insert tube; 8. Cutting plate; 9. Gear. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] like Figure 1-4 As shown, an aluminum alloy profile for an automotive energy-absorbing box includes a first connecting plate 1 connected to the bumper and a second connecting plate 2 connected to the vehicle body. The first connecting plate 1 and the second connecting plate 2 are arranged facing each other. A first shell 3 is provided on the surface of the first connecting plate 1, and a second shell 4 is provided on the surface of the second connecting plate 2. The first shell 3 and its internal structure are integrally formed from aluminum alloy profiles, while the second shell 4 and its internal structure are made of steel. The outer diameter of the second shell 4 is adapted to the inner diameter of the first shell 3, ensuring that the first shell 3 can deform along the connection point with the second shell 4 when subjected to impact, thereby wrapping around the first shell 3 from the outside. The second shell 4 and the first shell 3 are connected by laser composite welding, wherein the diameter of the second shell 4 is larger than that of the first shell 3. The weld between the first shell 3 and the second shell 4 forms a downwardly inclined groove. The inclined connecting groove forms a deformation guide groove between the first shell 3 and the second shell 4, so that the deformation between the first shell 3 and the second shell 4 can be carried out along the deformation guide groove, ensuring that the first shell 3 deforms in the required direction.

[0024] The first housing 3 has several evenly distributed ribs 5 arranged concentrically inside. Both the first housing 3 and the second housing 4 are hexagonal tubular structures. The ribs 5 inside the first housing 3 are arranged at each bend of the first housing 3 to ensure that the first housing 3 and the second housing 4 have sufficient lateral support. The ribs 5 also enhance the internal support effect of the first housing 3 and prevent the first housing 3 from deforming excessively when subjected to impact. A guide tube 6 is arranged in a circular position inside the first housing 3. The guide tube 6 is connected to the ribs 5. The guide tube 6 and the ribs 5 inside the first housing 3 are flush with the first housing 3.

[0025] The second housing 4 has an insertion tube 7 inside. A cutting plate 8 is arranged on the surface of the insertion tube 7 with the insertion tube 7 as the center. The cutting plate 8 is arranged alternately with the rib plate 5. The surface of the cutting plate 8 is provided with a toothed groove 9 that matches the guide tube 6. The insertion tube 7 and the cutting plate 8 inside the second housing 4 extend into the first housing 3. The insertion tube 7 extends into the guide tube 6. The cutting plate 8 is engaged with the guide tube 6 through the toothed groove 9. The part of the guide tube 6 that is engaged with the cutting plate 8 is provided with a reinforcing groove. The guide tube 6 is engaged with the toothed groove 9 on the surface of the cutting plate 8 through the reinforcing groove, which ensures that the guide tube 6 moves in a predetermined direction when it is pressed and cut by the cutting plate 8, and avoids the guide tube 6 from twisting and deforming during the pressing and cutting process, which would cause the first housing 3 to lose its axial support force.

[0026] Working principle of this utility model:

[0027] First, the overall structure is connected to the vehicle body through the second connecting plate 2. Then, the bumper is connected to the first connecting plate 1. When a collision occurs, the bumper is subjected to impact force and the first connecting plate 1 squeezes the second housing 4 and the first housing 3. At this time, the first housing 3 deforms first under the action of pressure and its own material. During the deformation process, it bends and wraps the second housing 4 to one side along the deformation guide groove formed by the connection with the second housing 4. During the wrapping process, the guide tube 6 inside the first housing 3 moves along the outside of the insertion tube 7 to restrict the movement path of the first housing 3.

[0028] During deformation, the cutting plate 8 inside the second shell 4 maintains its position under the support of the second connecting plate 2. The guide tube 6 contacts the cutting plate 8 during movement, but is cut by the material difference, reducing the resistance encountered by the guide tube 6 during movement and thus absorbing the energy generated by the impact. When the first shell 3 completely encloses the second shell 4, the first connecting plate 1 that installs the second shell 4 directly contacts the second shell 4. At this time, the impact force acts directly on the second shell 4. At the same time, the insertion tube 7 and the cutting plate 8 inside the second shell 4 provide axial support for the first shell 3, so that the overall structure can quickly absorb the impact energy in the early stage of the impact. In the later stage of the impact process, the second shell 4, made of steel, provides stable buffering to ensure the stability of the energy absorption process.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An aluminum alloy profile for an automotive energy-absorbing box, comprising a first connecting plate (1) connected to a bumper and a second connecting plate (2) connected to a vehicle body, characterized in that: The first connecting plate (1) and the second connecting plate (2) are arranged facing each other. The first connecting plate (1) is provided with a first shell (3), and the second connecting plate (2) is provided with a second shell (4). The second shell (4) and the first shell (3) are connected by laser composite welding, wherein the diameter of the second shell (4) is larger than that of the first shell (3). The first housing (3) has several evenly distributed ribs (5) arranged in a centripetal direction inside, and a guide tube (6) is arranged in a circular position inside the first housing (3), and the guide tube (6) is connected to the ribs (5). The second housing (4) has an insertion tube (7) inside. A cutting plate (8) is provided on the surface of the insertion tube (7) with the insertion tube (7) as the center. The cutting plate (8) and the rib (5) are arranged alternately. The surface of the cutting plate (8) is provided with a toothed groove (9) that is compatible with the guide tube (6).

2. The aluminum alloy profile for an automotive energy-absorbing box according to claim 1, characterized in that: The first shell (3) and its internal structure are integrally formed from aluminum alloy profiles, and the second shell (4) and its internal structure are made of steel. The outer diameter of the second shell (4) is adapted to the inner diameter of the first shell (3).

3. The aluminum alloy profile for an automotive energy-absorbing box according to claim 2, characterized in that: Both the first shell (3) and the second shell (4) are hexagonal tubular structures, wherein the ribs (5) inside the first shell (3) are provided at each bend position of the first shell (3).

4. The aluminum alloy profile for an automotive energy-absorbing box according to claim 3, characterized in that: The weld between the first housing (3) and the second housing (4) forms a downwardly inclined groove, and the inclined connecting groove forms a deformation guide groove between the first housing (3) and the second housing (4).

5. The aluminum alloy profile for an automotive energy-absorbing box according to claim 1, characterized in that: The guide tube (6) and rib plate (5) inside the first housing (3) are flush with the first housing (3).

6. The aluminum alloy profile for an automotive energy-absorbing box according to claim 5, characterized in that: The insertion tube (7) and the cutting plate (8) inside the second housing (4) extend into the first housing (3), wherein the insertion tube (7) extends into the guide tube (6), and the cutting plate (8) is engaged with the guide tube (6) through the tooth groove (9).

7. The aluminum alloy profile for an automotive energy-absorbing box according to claim 6, characterized in that: The part where the guide tube (6) and the cutting plate (8) are engaged is provided with a reinforcing groove, and the guide tube (6) is engaged with the toothed groove (9) on the surface of the cutting plate (8) through the reinforcing groove.

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