A lightweight automotive bumper anti-collision beam assembly

Abstract

This utility model discloses a lightweight automotive bumper anti-collision beam assembly, relating to the field of automotive component technology. It includes an anti-collision beam, an energy-absorbing box, and a mounting plate welded to the end of the energy-absorbing box. The anti-collision beam consists of a concave beam and a wave-shaped buffer beam movably mounted within the concave beam via a deformable connecting structure. The buffer beam and the concave beam cooperate to form an anti-collision beam with a rectangular cross-section. A connector is provided between the concave beam and the energy-absorbing box, with both ends of the connector adapting to the outer walls of the energy-absorbing box and the concave beam, respectively. This utility model, through the movable cooperation of the concave beam and the wave-shaped buffer beam, effectively absorbs and disperses some of the impact energy in the initial stage of a collision by utilizing the flexible deformation of the buffer beam. The concave beam then serves as the main supporting structure, providing stable resistance. Furthermore, the dedicated connector optimizes the force transmission path, allowing collision energy to be guided more smoothly from the anti-collision beam to the energy-absorbing box, avoiding stress concentration.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, and in particular to a lightweight automotive bumper anti-collision beam assembly. Background Technology

[0002] The bumper anti-collision beam assembly is a key component of the automotive safety system, generally consisting of an anti-collision beam, an energy-absorbing box, and a mounting plate welded to the end of the energy-absorbing box. The anti-collision beam is located at the front and rear of the vehicle and is the main structure directly bearing the impact of a collision. The energy-absorbing box connects the anti-collision beam to the vehicle's longitudinal beams and absorbs and dissipates collision energy through its own plastic deformation during a collision. The mounting plate securely connects the energy-absorbing box to the vehicle body, ensuring the reliable installation of the entire anti-collision beam assembly on the vehicle.

[0003] Currently, some anti-collision beam assemblies often reduce their weight by cutting material usage or adopting simplified structures. However, this excessive pursuit of lightweight inevitably weakens the overall rigidity and strength of the assembly, making it difficult to provide effective cushioning in the initial stage of a collision. Due to insufficient mass, its inertial impact resistance decreases, and it cannot dissipate energy sufficiently, causing more collision energy to be directly transferred to the main vehicle structure. This increases the extent of vehicle damage and the risk of occupant injury, failing to properly balance the contradiction between lightweighting and safety. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing anti-collision beam assemblies in terms of reduced impact resistance, and to propose a lightweight automotive bumper anti-collision beam assembly.

[0005] To address the problems existing in the prior art, the present invention adopts the following technical solution: A lightweight automotive bumper anti-collision beam assembly includes an anti-collision beam, an energy-absorbing box, and a mounting plate welded to the end of the energy-absorbing box. The anti-collision beam consists of a concave beam and a wave-shaped buffer beam movably installed within the concave beam via a deformable connecting structure. The buffer beam and the concave beam cooperate to form an anti-collision beam with a rectangular cross-section. A connector is provided between the concave beam and the energy-absorbing box, and the two ends of the connector are respectively adapted to the outer wall of the energy-absorbing box and the outer wall of the concave beam.

[0006] Preferably, the deformable connection structure includes two pairs of connecting pieces fixedly installed on the upper and lower sides of the buffer beam and two pairs of connecting grooves opened on the upper and lower sides of the concave beam. The connecting pieces pass through the connecting grooves, and the outer walls of the upper and lower sides of the concave beam are equipped with fasteners for fixing the connecting pieces.

[0007] Preferably, the fastener includes two pairs of mounting plates fixedly welded to the upper and lower sides of the concave beam, and a second bolt passes through the mounting plates and the connecting plates laterally.

[0008] Preferably, L-shaped positioning members are fixed at the four corners of one end of the connector, and the end of the energy-absorbing box is inserted into the rectangle formed by the four positioning members. Two third bolts penetrate vertically through the positioning members and the end of the energy-absorbing box.

[0009] Preferably, two first bolts are vertically inserted through the connector and the concave beam.

[0010] Preferably, the buffer beam has two vertically formed elliptical grooves, through which the first bolt passes.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the flexible deformation of the buffer beam, through the coordinated movement of the concave beam and the corrugated buffer beam, effectively absorbs and disperses some of the impact energy in the initial stage of a collision, while the concave beam serves as the main supporting structure, providing stable resistance. This combined design achieves lightweighting of the assembly while significantly improving its overall energy absorption efficiency and buffering performance. Furthermore, the dedicated connectors optimize the force transmission path, allowing collision energy to be guided more smoothly from the anti-collision beam to the energy-absorbing box, avoiding stress concentration. Thus, while ensuring structural integrity, the overall safety and reliability of the bumper assembly are comprehensively improved. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the installation structure of the concave beam and buffer beam of this utility model; Figure 3 This is a schematic diagram of the connecting component structure of this utility model.

[0013] The numbers in the diagram are: 1. Anti-collision beam; 11. Energy-absorbing box; 12. Mounting plate; 13. Concave beam; 14. Buffer beam; 15. Connector; 16. First bolt; 2. Connecting piece; 21. Connecting groove; 3. Mounting piece; 31. Second bolt; 4. Positioning piece; 41. Third bolt; 5. Elliptical groove. Detailed Implementation

[0014] 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.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] In the description of this specification, the references to terms such as "embodiment," "one embodiment," "some implementations," "exemplary," and "one implementation," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or implementation of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0017] Example: This example provides a lightweight automotive bumper anti-collision beam assembly. See [link / reference]. Figure 1-3 Specifically, it includes a crash beam 1, an energy-absorbing box 11, and a mounting plate 12 welded to the end of the energy-absorbing box 11. The crash beam 1 is composed of a concave beam 13 and a wave-shaped buffer beam 14 movably installed in the concave beam 13 through a deformable connection structure. The buffer beam 14 and the concave beam 13 cooperate to form a crash beam 1 with a rectangular cross-section. A connector 15 is provided between the concave beam 13 and the energy-absorbing box 11. The two ends of the connector 15 are adapted to the outer wall of the energy-absorbing box 11 and the outer wall of the concave beam 13, respectively.

[0018] In this embodiment, the energy-absorbing box 11 is installed between the anti-collision beam 1 and the vehicle's main structure. Its main function is to absorb and dissipate collision energy through its own deformation during a collision. The mounting plate 12 is welded to the end of the energy-absorbing box 11 to connect and fix it to the vehicle's main structure. The concave beam 13, as part of the anti-collision beam 1, provides installation space for the buffer beam 14 and works with the buffer beam 14 to form an anti-collision beam 1 structure with a certain strength. The buffer beam 14 has a wave-shaped design, providing good elasticity and buffering performance, further absorbing and dispersing collision energy during a collision, and together with the concave beam 13, constitutes the anti-collision beam 1. The connector 15 connects the concave beam 13 and the energy-absorbing box 11. One end of the connector 15 is fitted with the arc-shaped surface of the concave beam 13, and the other end is fitted with the rectangular surface of the energy-absorbing box 11, ensuring a stable and reliable connection between the anti-collision beam 1 and the energy-absorbing box 11. During a collision, the buffer beam 14 absorbs some energy through its wave-shaped deformation, while simultaneously transferring force to the concave beam 13. The concave beam 13 then transmits the force to the energy-absorbing box 11 through the connector 15. The energy-absorbing box 11 further absorbs and dissipates energy through its own deformation, ultimately reducing the impact force transmitted to the main structure of the vehicle. The concave beam 13 and the buffer beam 14 form a hollow composite structure with a rectangular cross-section. Compared with traditional solid steel beams or single profiles, the concave beam 13 is made of 2 mm aluminum alloy, and the buffer beam 14 is made of 1.5 mm aluminum alloy.

[0019] In the specific implementation process, such as Figure 1 and Figure 2 As shown, the deformable connection structure includes two pairs of connecting pieces 2 fixedly installed on the upper and lower sides of the buffer beam 14 and two pairs of connecting grooves 21 opened on the upper and lower sides of the concave beam 13. The connecting pieces 2 pass through the connecting grooves 21, and the outer walls of the upper and lower sides of the concave beam 13 are equipped with fasteners for fixing the connecting pieces 2.

[0020] In this embodiment, the connecting piece 2 is fixed on the upper and lower sides of the buffer beam 14 to connect the buffer beam 14 and the concave beam 13, enabling them to work together. The connecting groove 21 is formed on the upper and lower sides of the concave beam 13, providing an installation channel for the connecting piece 2, allowing it to pass through and be fixed in place with the fastener. The fastener is installed on the outer walls of the upper and lower sides of the concave beam 13 to fix the connecting piece 2, ensuring a secure connection between the buffer beam 14 and the concave beam 13.

[0021] In the specific implementation process, such as Figure 1 and Figure 2 As shown, the fastener includes two pairs of mounting plates 3 fixedly welded to the upper and lower sides of the concave beam 13, and a second bolt 31 passes through the mounting plate 3 and the connecting plate 2 laterally.

[0022] In this embodiment, the mounting plate 3 and the connecting plate 2 are connected together by the second bolt 31, so that a stable connection is formed between the buffer beam 14 and the concave beam 13, ensuring that the two can work together to bear and disperse the collision force during normal driving and collision.

[0023] In the specific implementation process, such as Figure 2 and Figure 3 As shown, L-shaped positioning parts 4 are fixed at the four corners of one end of the connector 15. The end of the energy-absorbing box 11 is inserted into the rectangle formed by the four positioning parts 4. Two third bolts 41 penetrate vertically through the positioning parts 4 and the end of the energy-absorbing box 11.

[0024] In this embodiment, the positioning members 4 are fixed at the four corners of one end of the connector 15, forming an L shape, and are used to position and initially fix the energy-absorbing box 11, ensuring accurate installation between the energy-absorbing box 11 and the connector 15. During installation, the end of the energy-absorbing box 11 is inserted into the rectangle formed by the four positioning members 4, and the energy-absorbing box 11 is positioned by the positioning members 4. Then, the third bolt 41 is used to fix the positioning members 4 and the end of the energy-absorbing box 11 together, ensuring a firm and reliable connection between the energy-absorbing box 11 and the connector 15.

[0025] In the specific implementation process, such as Figure 1 and Figure 2 As shown, two first bolts 16 are vertically inserted through the connector 15 and the concave beam 13, and two elliptical grooves 5 are vertically opened on the buffer beam 14, through which the first bolts 16 pass.

[0026] In this embodiment, the first bolt 16 vertically penetrates the connector 15 and the concave beam 13 to fix the connector 15 and the concave beam 13 together, enabling them to work together. The elliptical groove 5 is formed on the buffer beam 14 to provide installation space for the first bolt 16, while also allowing the buffer beam 14 to have a certain vertical movement space during a collision, so as to exert its buffering effect.

[0027] 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 inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lightweight automobile bumper beam assembly, comprising a bumper beam (1), an energy absorption box (11) and a mounting plate (12) welded to the end of the energy absorption box (11), characterized in that: The anti-collision beam (1) is composed of a concave beam (13) and a wave-shaped buffer beam (14) that is movably installed in the concave beam (13) through a deformable connection structure. The buffer beam (14) and the concave beam (13) cooperate to form an anti-collision beam (1) with a rectangular cross-section. A connector (15) is provided between the concave beam (13) and the energy-absorbing box (11). The two ends of the connector (15) are respectively adapted to the outer wall of the energy-absorbing box (11) and the outer wall of the concave beam (13).

2. The lightweight automotive bumper beam assembly of claim 1, wherein: The deformable connection structure includes two pairs of connecting pieces (2) fixedly installed on the upper and lower sides of the buffer beam (14) and two pairs of connecting grooves (21) opened on the upper and lower sides of the concave beam (13). The connecting pieces (2) pass through the connecting grooves (21), and the outer walls of the upper and lower sides of the concave beam (13) are equipped with fasteners for fixing the connecting pieces (2).

3. The lightweight automotive bumper beam assembly of claim 2, wherein: The fastener includes two pairs of mounting plates (3) fixedly welded to the upper and lower sides of the concave beam (13), and a second bolt (31) passes through the mounting plate (3) and the connecting plate (2) laterally.

4. A lightweight automotive bumper anti-collision beam assembly according to claim 1, characterized in that: L-shaped positioning parts (4) are fixed at the four corners of one end of the connector (15). The end of the energy-absorbing box (11) is inserted into the rectangle formed by the four positioning parts (4). Two third bolts (41) penetrate vertically through the end of the positioning parts (4) and the end of the energy-absorbing box (11).

5. A lightweight automotive bumper anti-collision beam assembly according to claim 1, characterized in that: Two first bolts (16) are vertically inserted through the connector (15) and the concave beam (13).

6. A lightweight automotive bumper anti-collision beam assembly according to claim 5, characterized in that: Two elliptical grooves (5) are vertically formed on the buffer beam (14), and the first bolt (16) passes through the elliptical grooves (5).

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