Energy absorption box assembly for vehicle and vehicle

Abstract

The utility model discloses an energy absorption box assembly for a vehicle and the vehicle, the energy absorption box assembly comprises an energy absorption box body, the energy absorption box body extends in the length direction, and a first mounting part is formed at one end of the energy absorption box body in the length direction; the mounting plate is sequentially connected with the energy absorption box body in the length direction, and a second mounting part extending towards the energy absorption box body is formed on the mounting plate; wherein the first mounting part and the second mounting part are welded and fixed. According to the energy absorption box assembly for the vehicle, the energy absorption box assembly can improve the connecting strength between the energy absorption box body and the mounting plate.

Description

Technical Field

[0001] The present application relates to the field of vehicles, and more particularly to an energy-absorbing box assembly for a vehicle and a vehicle. Background Art

[0002] In related technologies, the aluminum alloy anti-collision beam energy-absorbing box and the mounting plate are mostly fixed by butt welding. Due to the welding characteristics of the aluminum alloy material, the strength of the weld generally cannot reach the strength of the base material. Therefore, under the limitations of the connection structure and welding characteristics, there are risks for the energy-absorbing box during towing and collision. For example, the weld is prone to breakage under extreme towing conditions, or during vehicle collision, the impact force and direction are uncertain, resulting in weld breakage, affecting the energy absorption effect of the energy-absorbing box and threatening the safety of the vehicle occupants. Summary of the Utility Model

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present application is to provide an energy-absorbing box assembly for a vehicle, which can improve the connection strength between the energy-absorbing box body and the mounting plate.

[0004] The present application also provides a vehicle having the above energy-absorbing box assembly.

[0005] The energy-absorbing box assembly for a vehicle according to an embodiment of the present application includes: an energy-absorbing box body extending in the length direction, and a first mounting portion is formed at one end of the energy-absorbing box body in the length direction; a mounting plate, the mounting plate and the energy-absorbing box body are sequentially connected in the length direction, and a second mounting portion extending toward the energy-absorbing box body is formed on the mounting plate; wherein the first mounting portion and the second mounting portion are fixed by welding.

[0006] The energy-absorbing box assembly for a vehicle according to an embodiment of the present application is provided with a first mounting portion on the energy-absorbing box body and a second mounting portion on the mounting plate. The first mounting portion and the second mounting portion can be fixed by surface contact welding. Therefore, on the basis of welding the energy-absorbing box body and the mounting plate, the first mounting portion and the second mounting portion are welded again, increasing the welding area, reducing the risk of weld detachment, improving the connection strength between the energy-absorbing box body and the mounting plate, ensuring the energy absorption effect of the energy-absorbing box assembly during collision, and improving the reliability of the energy-absorbing box assembly.

[0007] In some embodiments of the present application, in a plane perpendicular to the length direction, a projection of the second mounting portion coincides with a partial projection of the center line of the mounting plate in the width direction.

[0008] In some embodiments of the present application, the first mounting portion is configured as one of a mounting groove and a mounting protrusion, the second mounting portion is configured as the other of the mounting groove and the mounting protrusion, a first welding edge is formed on the inner wall of the mounting groove, and a second welding edge for welding and fixing with the first welding edge is formed on the outer surface of the mounting protrusion.

[0009] In some embodiments of the present application, the size of the energy absorption box body in the width direction is L1, the size of the mounting protrusion in the width direction is L2 and satisfies: 1 / 3 ≤ L2 / L1 ≤ 1 / 2.

[0010] In some embodiments of the present application, the size of the mounting protrusion in the length direction is L3 and satisfies: 25 mm ≤ L3 ≤ 35 mm.

[0011] In some embodiments of the present application, an energy absorption cavity is further formed inside the mounting protrusion.

[0012] In some embodiments of the present application, reinforcing ribs extending in the length direction and / or the width direction are arranged in the energy absorption cavity.

[0013] In some embodiments of the present application, the energy absorption cavity is arranged to penetrate in the height direction, the wall thickness of the mounting protrusion is D1 and satisfies: 2.5 mm ≤ D1 ≤ 3.5 mm.

[0014] In some embodiments of the present application, the thickness of the reinforcing rib is D2 and satisfies: 1.5 mm ≤ D2 ≤ 2.5 mm, and the thickness of the mounting plate is D3 and satisfies: 5.5 mm ≤ D3 ≤ 6.5 mm.

[0015] The vehicle according to the embodiments of the present application will be briefly described below.

[0016] The vehicle according to the embodiments of the present application is provided with the energy absorption box assembly of the above embodiments. Since the vehicle according to the embodiments of the present application is provided with the energy absorption box assembly of the above embodiments, therefore, the energy absorption box assembly of this vehicle is provided with a first mounting portion on the energy absorption box body and a second mounting portion on the mounting plate. The first mounting portion and the second mounting portion can be fixed by means of contact surface welding. Therefore, on the basis of welding the energy absorption box body and the mounting plate, welding the first mounting portion and the second mounting portion is added, increasing the welding area, improving the connection strength between the energy absorption box body and the mounting plate, ensuring the energy absorption effect when the energy absorption box assembly collides, improving the reliability of the energy absorption box assembly and the safety performance of the vehicle.

[0017] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 is a schematic structural diagram of an energy absorption box assembly according to an embodiment of the present application;

[0020] Figure 2 is Figure 1 a schematic structural diagram of the mounting plate and the second mounting portion in

[0021] Figure 3 is Figure 1 a schematic structural diagram of the energy absorption box body and the first mounting portion in

[0022] Figure 4 is a schematic structural diagram of the energy absorption box assembly and the anti-collision beam after assembly according to an embodiment of the present application.

[0023] Reference numerals:

[0024] 10. Energy absorption box assembly;

[0025] 11. Energy absorption box body; 111. First mounting portion; 112. Mounting groove;

[0026] 12. Mounting plate; 121. Second mounting portion; 122. Mounting projection; 123. Energy absorption cavity; 124. Reinforcing rib;

[0027] 20. Anti-collision beam. Detailed Description of the Embodiment

[0028] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present application and should not be construed as limiting the present application.

[0029] Reference will be made below to Figures 1 - 4 describe an energy absorption box assembly 10 for a vehicle according to an embodiment of the present application. The energy absorption box assembly 10 includes an energy absorption box body 11 and a mounting plate 12. The energy absorption box body 11 extends in the length direction, and a first mounting portion 111 is formed at one end of the energy absorption box body 11 in the length direction. The mounting plate 12 is sequentially connected to the energy absorption box body 11 in the length direction. A second mounting portion 121 extending toward the energy absorption box body 11 is formed on the mounting plate 12, and the second mounting portion 121 is located at the center point of the mounting plate 12 in the width direction. Among them, the first mounting portion 111 and the second mounting portion 121 are fixedly welded.

[0030] Currently, the energy-absorbing box of the aluminum alloy anti-collision beam and the mounting plate are mostly fixed by butt welding. Due to the welding characteristics of the aluminum alloy material, the strength of the weld generally cannot reach the strength of the base material. Therefore, under the limitations of the connection structure and welding characteristics, there are risks for the energy-absorbing box during towing and collision. For example, the weld is prone to breakage under extreme towing conditions, or during vehicle collision, the impact force and direction are uncertain, resulting in weld breakage, affecting the energy-absorbing effect of the energy-absorbing box and threatening the safety of the vehicle occupants.

[0031] As Figure 1 shown, specifically, the energy-absorbing box assembly 10 includes an energy-absorbing box body 11 and a mounting plate 12. The energy-absorbing box body 11 can extend in the length direction, and one end of the energy-absorbing box body 11 in the length direction can be connected to the anti-collision beam 20 of the vehicle. The other end of the energy-absorbing box body 11 in the length direction can be formed with a first mounting portion 111. It should be noted that the length direction referred to in this application can be the length direction of the vehicle, that is, the X direction of the vehicle. The width direction referred to in this application can be the width direction of the vehicle, that is, the Y direction of the vehicle. The height direction referred to in this application can be the height direction of the vehicle, that is, the Z direction of the vehicle. It should be noted that in a specific embodiment, the materials of the energy-absorbing box body 11 and the mounting plate 12 can be aluminum alloy. Compared with steel, the aluminum alloy material can reduce the overall weight, realize the lightweight design of the vehicle, and improve fuel economy.

[0032] Furthermore, the mounting plate 12 can be arranged at one end of the energy-absorbing box body 11 facing away from the anti-collision beam 20, and the mounting plate 12 can be connected to the longitudinal beam of the vehicle. The mounting plate 12 and the energy-absorbing box body 11 can be fixed by direct welding on the contact surface. Among them, a second mounting portion 121 can be formed on the side of the mounting plate 12 facing the energy-absorbing box body 11. The second mounting portion 121 can extend towards the energy-absorbing box body 11, and the second mounting portion 121 can be fixed to the first mounting portion 111 by direct welding on the contact surface.

[0033] Optionally, the second mounting portion 121 can extend into the interior of the energy-absorbing box body 11. The first mounting portion 111 can be used to avoid the second mounting portion 121, and the inner wall of the second mounting portion 121 can be attached to the outer wall of the first mounting portion 111. The first mounting portion 111 and the second mounting portion 121 can be welded and fixed at the attachment. By providing the first mounting portion 111, it can be attached to the mounting plate 12 when the second mounting portion 121 occupies a part of the space of the energy-absorbing box body 11. Compared with the prior art, in the energy-absorbing box assembly 10 of the embodiment of this application, on the basis of welding and fixing the energy-absorbing box body 11 and the mounting plate 12, the first mounting portion 111 and the second mounting portion 121 are welded again, increasing the welding length and improving the connection strength between the energy-absorbing box body 11 and the mounting plate 12.

[0034] Briefly, the energy absorption box assembly 10 for a vehicle according to the embodiments of the present application has a first mounting portion 111 provided on the energy absorption box body 11 and a second mounting portion 121 provided on the mounting plate 12. The first mounting portion 111 and the second mounting portion 121 can be fixed by means of contact surface welding. Therefore, on the basis of welding the energy absorption box body 11 and the mounting plate 12, welding the first mounting portion 111 and the second mounting portion 121 is added, which increases the welding area, reduces the risk of solder joint detachment, improves the connection strength between the energy absorption box body 11 and the mounting plate 12, ensures the energy absorption effect of the energy absorption box assembly 10 during a collision, and improves the reliability of the energy absorption box assembly 10.

[0035] In some embodiments of the present application, in a plane perpendicular to the length direction, the projection of the second mounting portion 121 coincides with a partial projection of the center line of the mounting plate 12 in the width direction. It can be understood that the second mounting portion 121 is disposed opposite to the center line of the mounting plate 12 in the width direction, thereby changing the force application point of the second mounting portion 121 on the mounting plate 12 and more effectively absorbing energy when the vehicle collides. Setting the second mounting portion 121 at the edge of the mounting plate 12 will result in a reduction in the welding area between the first mounting portion 111 and the second mounting portion 121. Therefore, setting the second mounting portion 121 at the center point of the mounting plate 12 also facilitates welding of the first mounting portion 111 and the second mounting portion 121 and improves the welding strength between the first mounting portion 111 and the second mounting portion 121.

[0036] As Figure 2 and Figure 3 shown, in some embodiments of the present application, the first mounting portion 111 can be configured as one of a mounting groove 112 and a mounting protrusion 122, and the second mounting portion 121 can be configured as the other of the mounting groove 112 and the mounting protrusion 122. In a specific embodiment, the first mounting portion 111 can be configured as a mounting groove 112 recessed toward the energy absorption box body 11, and the second mounting portion 121 can be configured as a mounting protrusion 122 protruding from the surface of the mounting plate 12. The mounting protrusion 122 can extend into the mounting groove 112. A first welding edge is formed on the inner wall of the mounting groove 112, and a second welding edge is formed on the outer surface of the mounting protrusion 122. The first welding edge and the second welding edge are disposed opposite to each other and are in contact. Workers can weld and fix the first welding edge and the second welding edge to weld and connect the mounting protrusion 122 and the mounting groove 112. Optionally, the mounting protrusion 122 can be configured as an arc or a polygonal structure.

[0037] As Figure 1 and Figure 2As shown, in some embodiments of the present application, the size of the energy absorption box body 11 in the width direction is L1, the size of the mounting protrusion 122 in the width direction is L2, and L1 and L2 can satisfy the relational expression: 1 / 3 ≤ L2 / L1 ≤ 1 / 2, that is, the ratio L2 / L1 of the size of the mounting protrusion 122 in the width direction to the size of the energy absorption box body 11 in the width direction can be any value between 1 / 3 and 1 / 2. For example, the ratio of the size of the mounting protrusion 122 in the width direction to the size of the energy absorption box body 11 in the width direction can be, but is not limited to, 1 / 3, 2 / 5, 1 / 2, etc. It can be understood that if the width ratio of the energy absorption box body 11 to the mounting protrusion 122 is too small, the connection between the energy absorption box body 11 and the mounting plate 12 will be insecure, and if the width ratio of the energy absorption box body 11 to the mounting protrusion 122 is too large, the installation difficulty will be significantly increased. Therefore, by setting the ratio of L1 and L2 within the above range, the overlapping edge of the mounting protrusion 122 and the mounting groove 112 in the width direction can be increased, the welding length can be increased, and the welding strength between the energy absorption box body 11 and the mounting plate 12 can be improved.

[0038] As Figure 2 shown, in some embodiments of the present application, the size of the mounting protrusion 122 in the length direction is L3, and L3 can satisfy the relational expression: 25 mm ≤ L3 ≤ 35 mm, that is, the size of the mounting protrusion 122 in the length direction can be any value between 25 mm and 35 mm. For example, the size of the mounting protrusion 122 in the length direction can be, but is not limited to, 25 mm, 27 mm, 30 mm, 33 mm, 35 mm, etc. It can be understood that if the size of the mounting protrusion 122 in the length direction is too small, the welding edge will be reduced, and if the size of the mounting protrusion 122 in the length direction is too large, the energy absorption effect of the energy absorption box body 11 will be affected. Therefore, setting L3 within the above range can make the size of the mounting protrusion 122 in the length direction reasonable, increase the welding area while avoiding affecting the energy absorption effect of the energy absorption box body 11 due to the overlong mounting protrusion 122, and improve the reliability of the energy absorption box assembly 10.

[0039] As Figure 2 shown, in some embodiments of the present application, an energy absorption cavity 123 can be formed inside the mounting protrusion 122. The energy absorption cavity 123 can be provided to penetrate in the height direction, and the energy absorption cavity 123 can play a role in energy absorption. When a vehicle collides, the energy generated by the collision is transmitted to the energy absorption box assembly 10. The energy absorption box body 11 can absorb energy through buckling, and the mounting protrusion 122 can also absorb energy through buckling, ensuring the energy absorption effect of the energy absorption box assembly 10.

[0040] As Figure 1 and Figure 2As shown, in some embodiments of the present application, reinforcing ribs 124 may be formed in the energy absorption cavity 123. The reinforcing ribs 124 may extend in the length direction or the width direction, or the reinforcing ribs 124 may be configured in multiple numbers. Some of the reinforcing ribs 124 may extend in the length direction, and the other part of the reinforcing ribs 124 may extend in the width direction. The reinforcing ribs 124 can improve the stiffness of the mounting protrusion 122. When the vehicle is in an extreme towing condition, the reinforcing ribs 124 can ensure that the mounting protrusion 122 will not be deformed during towing by increasing the stiffness of the mounting protrusion 122, ensuring the reliability of the mounting protrusion 122. In a specific embodiment, the reinforcing ribs 124 may be configured as two, and the two reinforcing ribs 124 extend in the length direction and the width direction respectively to divide the energy absorption cavity 123 into four cavities. The reinforcing ribs 124 may be provided at the center point of the mounting protrusion 122 in the length direction and the center point in the width direction, so as to avoid the reinforcing ribs 124 affecting the energy absorption effect of the mounting protrusion 122.

[0041] As Figure 2 shown, in some embodiments of the present application, the mounting plate 12 and the mounting protrusion 122 are integrally formed by extrusion, and the extrusion process can achieve unequal wall thicknesses of the mounting plate 12. Wherein, the wall thickness of the mounting protrusion 122 is D1, and D1 can satisfy the relational expression: 2.5 mm ≤ D1 ≤ 3.5 mm, that is, the wall thickness of the mounting protrusion 122 can be any value between 2.5 mm and 3.5 mm. For example, the wall thickness of the mounting protrusion 122 can be, but is not limited to, 2.5 mm, 2.8 mm, 3 mm, 3.2 mm, 3.5 mm, etc. The thickness of the reinforcing rib 124 is D2, and D2 can satisfy the relational expression: 1.5 mm ≤ D2 ≤ 2.5 mm, that is, the thickness of the reinforcing rib 124 can be any value between 1.5 mm and 2.5 mm. For example, the thickness of the reinforcing rib 124 can be, but is not limited to, 1.5 mm, 1.8 mm, 2 mm, 2.2 mm, 2.5 mm, etc. Such a setting can ensure the structural strength of the mounting protrusion 122, improve the connection reliability between the energy absorption box body 11 and the mounting plate 12, and at the same time ensure that when the vehicle collides, the mounting protrusion 122 can more effectively absorb part of the energy generated by the collision.

[0042] In some embodiments of the present application, the thickness of the mounting plate 12 is D3, and D3 can satisfy the relational expression: 5.5 mm ≤ D3 ≤ 6.5 mm, that is, the thickness of the mounting plate 12 can be any value between 5.5 mm and 6.5 mm. For example, the thickness of the mounting plate 12 can be, but is not limited to, 5.5 mm, 5.8 mm, 6 mm, 6.2 mm, 6.5 mm, etc. Such a setting can ensure the structural strength of the mounting plate 12, enable the mounting plate 12 to effectively connect the energy absorption box body 11 with the vehicle's longitudinal beam, and increase the stiffness and anti-deformation ability of the mounting plate 12.

[0043] The vehicle according to the embodiment of the present application will be briefly described below.

[0044] The vehicle according to the embodiment of the present application is provided with the energy absorption box assembly 10 of the above embodiment. Since the vehicle according to the embodiment of the present application is provided with the energy absorption box assembly 10 of the above embodiment, therefore, the energy absorption box assembly 10 of this vehicle is provided with a first mounting portion 111 on the energy absorption box body 11 and a second mounting portion 121 on the mounting plate 12. The first mounting portion 111 and the second mounting portion 121 can be fixed by means of contact surface welding. Therefore, on the basis of welding the energy absorption box body 11 and the mounting plate 12, welding the first mounting portion 111 and the second mounting portion 121 is added, which increases the welding area, improves the connection strength between the energy absorption box body 11 and the mounting plate 12, ensures the energy absorption effect of the energy absorption box assembly 10 during collision, and improves the reliability of the energy absorption box assembly 10 and the safety performance of the vehicle.

[0045] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present application.

[0046] In the description of the present application, "the first feature" and "the second feature" may include one or more of such features.

[0047] In the description of the present application, "a plurality of" means two or more.

[0048] In the description of the present application, that the first feature is "above" or "below" the second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but in contact through other features therebetween.

[0049] In the description of the present application, that the first feature is "above", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0051] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An energy absorption box assembly for a vehicle, characterized in that, Comprising: An energy absorption box body (11), the energy absorption box body (11) extends in the length direction, and a first mounting portion (111) is formed at one end of the energy absorption box body (11) in the length direction; A mounting plate (12), the mounting plate (12) is sequentially connected with the energy absorption box body (11) in the length direction, and a second mounting portion (121) extending towards the energy absorption box body (11) is formed on the mounting plate (12); wherein The first mounting portion (111) and the second mounting portion (121) are fixed by welding.

2. The energy-absorbing box assembly for a vehicle according to claim 1, characterized in that, On a plane perpendicular to the length direction, the projection of the second mounting portion (121) coincides with a partial projection of the center line of the mounting plate (12) in the width direction.

3. The energy-absorbing box assembly for a vehicle according to claim 1, wherein, The first mounting portion (111) is configured as one of a mounting groove (112) and a mounting protrusion (122), the second mounting portion (121) is configured as the other of the mounting groove (112) and the mounting protrusion (122), a first welding edge is formed on the inner wall of the mounting groove (112), and a second welding edge welded and fixed with the first welding edge is formed on the outer surface of the mounting protrusion (122).

4. The energy absorption box assembly for a vehicle according to claim 3, wherein, The size of the energy absorption box body (11) in the width direction is L1, the size of the mounting protrusion (122) in the width direction is L2 and satisfies: 1 / 3 ≤ L2 / L1 ≤ 1 / 2.

5. The energy-absorbing box assembly for a vehicle according to claim 4, characterized in that, The size of the mounting protrusion (122) in the length direction is L3 and satisfies: 25 mm ≤ L3 ≤ 35 mm.

6. The energy absorption box assembly for a vehicle according to any one of claims 3-5, characterized in that, An energy absorption cavity (123) is further formed inside the mounting protrusion (122).

7. The energy-absorbing box assembly for a vehicle according to claim 6, wherein, Reinforcing ribs (124) extending in the length direction and / or width direction are arranged in the energy absorption cavity (123).

8. The energy absorption box assembly for a vehicle according to claim 7, wherein, The energy absorption cavity (123) is provided with a through hole in the height direction, the wall thickness of the mounting protrusion (122) is D1 and satisfies: 2.5 mm ≤ D1 ≤ 3.5 mm.

9. The energy-absorbing box assembly for a vehicle according to claim 8, characterized in that, The thickness of the reinforcing rib (124) is D2 and satisfies: 1.5 mm ≤ D2 ≤ 2.5 mm, the thickness of the mounting plate (12) is D3 and satisfies: 5.5 mm ≤ D3 ≤ 6.5 mm.

10. A vehicle, characterized in that, Comprising an energy absorption box assembly for a vehicle according to any one of claims 1-9.

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