A type of anti-collision beam assembly

Abstract

This utility model discloses a crash beam assembly, including a crash beam body; two crash beam joints are fixedly connected to both sides of the crash beam body, and several pins are fixedly connected to the crash beam joints. An energy-absorbing box is movably connected to the other end of the crash beam joint, and the pins and the energy-absorbing box are slidably connected. Several fixing rods are fixedly connected to the energy-absorbing box, with two fixing rods forming a group. Clamping plates are rotatably connected to the two fixing rods respectively, and a return spring is fixedly connected between the clamping plates. A column mounting plate is fixedly connected to the end of the energy-absorbing box away from the crash beam joint. This utility model achieves one-click disassembly and assembly of the energy-absorbing box through the combination of pins, clamping plates, and return springs. Maintenance personnel can operate it without special training, which greatly reduces the technical threshold for maintenance. The energy-absorbing box can be replaced individually, reducing the use of special tools and consumables. Moreover, the multiple sets of clamping plates are evenly distributed, making the force more balanced. This greatly improves maintenance efficiency while ensuring the reliability of the connection.

Description

Technical Field

[0001] This utility model relates to the field of automotive body technology, and in particular to a crash beam assembly. Background Technology

[0002] The anti-collision beam assembly is an important safety component in the vehicle body structure. It is usually made of high-strength steel or aluminum alloy and is installed at the front and rear of the vehicle. Its core function is to absorb and disperse collision energy to protect the internal core components from direct impact in the event of a low-speed collision, while reducing maintenance costs. In new energy vehicles, it also needs to protect the high-voltage battery pack, making it a key component of the vehicle's passive safety system.

[0003] Traditional energy-absorbing boxes on crash beams cannot be quickly replaced. Traditional welded energy-absorbing boxes require cutting into the vehicle body structure, extending repair time and causing significant inconvenience. While bolt-fixed boxes are removable, they require alignment with longitudinal beams, resulting in lengthy repair times and impacting vehicle turnover efficiency. Furthermore, welding repairs require specialized equipment, and welding repair records may be classified as structural damage during third-party inspections, leading to a decrease in vehicle residual value.

[0004] Therefore, to address the problem that the energy-absorbing boxes on traditional crash beams cannot be quickly replaced, resulting in low maintenance efficiency, vehicle downtime losses, and a deteriorating maintenance cost structure, a crash beam assembly that can be flexibly disassembled can be designed to solve the above problems. Utility Model Content

[0005] To overcome the problem that the energy-absorbing boxes on traditional crash beams cannot be quickly replaced, resulting in low maintenance efficiency, vehicle downtime losses, and a deteriorating maintenance cost structure.

[0006] The technical solution of this utility model is as follows: a crash beam assembly, including a crash beam body; two crash beam joints are fixedly connected to both sides of the crash beam body, and several pins are fixedly connected to the crash beam joints. An energy-absorbing box is movably connected to the other end of the crash beam joints. The pins and the energy-absorbing box are slidably connected. Several fixing rods are fixedly connected to the energy-absorbing box. Two fixing rods form a group. Clamping plates are rotatably connected to the two fixing rods respectively. A return spring is fixedly connected between the clamping plates. A column mounting plate is fixedly connected to the end of the energy-absorbing box away from the crash beam joints. The energy-absorbing box is provided with multiple collapse grooves.

[0007] Preferably, when the anti-collision beam body is subjected to a severe impact, the impact force is transmitted to the front end of the energy-absorbing box, and then transferred along the axial direction of the box to the crumple groove. The crumple groove converts the instantaneous impact force into continuous plastic deformation, prolonging the collision time. When the energy-absorbing box is damaged, the damaged energy-absorbing box is removed from the anti-collision beam joint, and then the pin is inserted into a brand new energy-absorbing box. The pin pushes the two clamping plates to rotate to both sides, which drives the return spring to stretch until the pin is completely clamped between the two clamping plates. Then the return spring resets, driving the clamping plates on both sides to rotate back, realizing the rapid replacement of the energy-absorbing box.

[0008] Preferably, a connecting spring is fixedly connected to the column mounting plate, and the other end of the connecting spring is fixedly connected to the mounting column.

[0009] Preferably, the mounting column has two top plates on both sides near the mounting plate. A transmission spring is fixedly connected to the top plate, and a vibration sensor is fixedly connected to the other end of the transmission spring. The vibration sensor is fixedly connected to the mounting column.

[0010] Preferably, a first rotating shaft is fixedly connected to the mounting column, and two first connecting rods are rotatably connected to the first rotating shaft.

[0011] Preferably, the other end of the first link is rotatably connected to a second link, the other end of the second link is rotatably connected to a second pivot, and the second pivot is fixedly connected to the anti-collision beam body.

[0012] Preferably, a compression spring is fixedly connected to the first rotating shaft, and the other end of the compression spring is fixedly connected to the second rotating shaft.

[0013] Preferably, a folded reinforcing plate is fixedly connected inside the anti-collision beam body, and several lightweight foam metals are provided between the folded reinforcing plate and the anti-collision beam body.

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

[0015] By using a pin, clamping plate, and return spring, the energy-absorbing box can be disassembled and assembled with one click. Maintenance personnel can operate it without special training, which greatly reduces the technical threshold for maintenance. It eliminates the tedious steps of rust removal, alignment, and tightening in the traditional disassembly process. The energy-absorbing box can be replaced separately without affecting other components, reducing the use of special tools and consumables. In addition, multiple clamping plates are evenly distributed, making the force more balanced. This greatly improves maintenance efficiency while ensuring the reliability of the connection. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic representation of the overall three-dimensional structure of this utility model.

[0017] Figure 2 The diagram shown is a schematic cross-sectional view of the overall structure of this utility model.

[0018] Figure 3 The diagram shown is a cross-sectional view of the anti-collision beam body of this utility model.

[0019] Figure 4 The diagram shown is a schematic representation of the energy-absorbing box structure of this utility model.

[0020] Figure 5 The diagram shown is a schematic representation of the conductive spring structure of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Anti-collision beam body; 2. Anti-collision beam joint; 3. Pin; 4. Energy absorption box; 401. Collapse groove; 5. Fixing rod; 6. Clamping plate; 7. Return spring; 8. Column mounting plate; 9. Connecting spring; 10. Mounting column; 11. Top plate; 12. Conducting spring; 13. Vibration sensor; 14. First rotating shaft; 15. First connecting rod; 16. Second connecting rod; 17. Second rotating shaft; 18. Compression spring; 19. Folded reinforcing plate; 20. Lightweight foam metal. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-5 This utility model provides an embodiment: a crash beam assembly, including a crash beam body 1; two crash beam connectors 2 are fixedly connected to both sides of the crash beam body 1, and several pins 3 are fixedly connected to the crash beam connectors 2; an energy-absorbing box 4 is movably connected to the other end of the crash beam connectors 2; the pins 3 and the energy-absorbing box 4 are slidably connected; several fixing rods 5 are fixedly connected to the energy-absorbing box 4; two fixing rods 5 form a group; clamping plates 6 are rotatably connected to the two fixing rods 5 respectively; a return spring 7 is fixedly connected between the clamping plates 6; a column mounting plate 8 is fixedly connected to the end of the energy-absorbing box 4 away from the crash beam connectors 2; and multiple collapse grooves 401 are provided on the energy-absorbing box 4. When the anti-collision beam body 1 is subjected to a severe impact, the impact force is transmitted to the front end of the energy-absorbing box 4, and then transferred along the axial direction of the box to the crumple groove 401. The crumple groove 401 converts the instantaneous impact force into continuous plastic deformation, prolonging the collision time. When the energy-absorbing box 4 is damaged, the damaged energy-absorbing box 4 is removed from the anti-collision beam joint 2, and then the pin 3 is inserted into the new energy-absorbing box 4. The pin 3 pushes the two clamping plates 6 to rotate to both sides, which drives the return spring 7 to stretch until the pin 3 is completely clamped between the two clamping plates 6. Then the return spring 7 resets, driving the clamping plates 6 on both sides to rotate back, realizing the rapid replacement of the energy-absorbing box 4.

[0024] Please see Figures 1-5In this embodiment, a connecting spring 9 is fixedly connected to the column mounting plate 8, and the other end of the connecting spring 9 is fixedly connected to the mounting column 10. The two parts are connected by the connecting spring 9, and the connection is made using a relatively rigid connecting spring 9, which can buffer the mounting column 10 when it is subjected to impact, thus achieving a stable connection. Two top plates 11 are provided on both sides of the mounting column 10 near the end of the column mounting plate 8. A conduction spring 12 is fixedly connected to the top plate 11, and a vibration sensor 13 is fixedly connected to the other end of the conduction spring 12. The vibration sensor 13 is fixedly connected to the mounting column 10, and two vibration sensors 13 are provided on both sides of the mounting column 10. Then, the top plate 11 is connected to the vibration sensor 13 through the transmission spring 12, so that the top plate 11 and the pillar mounting plate 8 are in contact, receive the vibration from the pillar mounting plate 8, and transmit it to the vibration sensor 13 through the transmission spring 12 for real-time detection. When an abnormal vibration is detected, it is transmitted to the vehicle's control components to trigger an alarm. The vibration sensor 13 in this device is model BADS-LC0109. A first rotating shaft 14 is fixedly connected to the mounting column 10. Two first connecting rods 15 are rotatably connected to the first rotating shaft 14. When the anti-collision beam body 1 is subjected to a slight impact, the two first connecting rods 15 rotate to disperse the force on the mounting column 10.

[0025] Please see Figures 1-3 In this embodiment, the other end of the first connecting rod 15 is rotatably connected to a second connecting rod 16, and the other end of the second connecting rod 16 is rotatably connected to a second rotating shaft 17. The second rotating shaft 17 is fixedly connected to the anti-collision beam body 1. When the anti-collision beam body 1 is subjected to a slight impact, the second connecting rod 16 cooperates with the first connecting rod 15 to rotate, dispersing the force on the anti-collision beam body 1 and preventing deformation of other rigid components. A compression spring 18 is fixedly connected to the first rotating shaft 14, and the other end of the compression spring 18 is fixedly connected to the second rotating shaft 17. The compression spring 18 is used to compress the first connecting rod 15. A pivot 14 and a second pivot 17 are connected to buffer the impact force when subjected to minor impacts, making the structure more stable. A folded reinforcing plate 19 is fixedly connected inside the anti-collision beam body 1. Several lightweight foam metals 20 are provided between the folded reinforcing plate 19 and the anti-collision beam body 1. When impacted, the collision force is first transmitted to the anti-collision beam body 1, and the impact is borne by the outer metal skeleton. Then the lightweight foam metals 20 begin to be micro-compressed. The multi-chamber structure disperses the impact force to multiple bearing paths through the internal folded reinforcing plate 19, avoiding local stress concentration.

[0026] During operation, two vibration sensors 13 are installed on both sides of the mounting column 10. A top plate 11 is then connected to the vibration sensors 13 via a transmission spring 12, bringing the top plate 11 into contact with the column mounting plate 8. The top plate 11 receives vibrations from the column mounting plate 8 and transmits them to the vibration sensors 13 via the transmission spring 12 for real-time detection. When an abnormal vibration is detected, an alarm is triggered by the vehicle's control components. When the anti-collision beam body 1 experiences a minor impact, the two first connecting rods 15 rotate, and the second connecting rod 16 rotates in coordination with the first connecting rods 15, dispersing the force on the anti-collision beam body 1 and the mounting column 10. When the anti-collision beam body 1 experiences a severe impact, the impact force is first transmitted to the anti-collision beam body 1, where the impact is absorbed by the outer metal frame, and then... The foam metal 20 begins to compress microscopically. The multi-chamber structure disperses the impact force to multiple load-bearing paths through the internal folded reinforcing plate 19, avoiding local stress concentration. The impact force is then transmitted to the front end of the energy-absorbing box 4 and then transferred along the box axis to the collapse groove 401. The collapse groove 401 converts the instantaneous impact force into continuous plastic deformation, prolonging the collision time. When the energy-absorbing box 4 is damaged, the damaged energy-absorbing box 4 is removed from the anti-collision beam joint 2. Then, the pin 3 is inserted into the new energy-absorbing box 4. The pin 3 pushes the two clamping plates 6 to rotate to both sides, causing the return spring 7 to stretch until the pin 3 is completely clamped between the two clamping plates 6. Then, the return spring 7 resets, causing the clamping plates 6 on both sides to rotate back, realizing the rapid replacement of the energy-absorbing box 4.

[0027] Through the above steps, using the pin 3 in conjunction with the clamping plate 6 and the return spring 7, the energy-absorbing box 4 can be disassembled and assembled with one click. Maintenance personnel can operate it without special training, which greatly reduces the technical threshold for maintenance. It eliminates the tedious steps of rust removal, alignment, and tightening in the traditional disassembly process. The energy-absorbing box can be replaced separately without affecting other parts, reducing the use of special tools and consumables. Moreover, the multiple clamping plates 6 are evenly distributed, making the force more balanced. While greatly improving maintenance efficiency, it also ensures the reliability of the connection. This solves the problem that the energy-absorbing box on the traditional anti-collision beam cannot be quickly replaced, resulting in low maintenance efficiency, vehicle downtime losses, and a deterioration of the maintenance cost structure.

Claims

1. A crash beam assembly comprising a crash beam body (1); characterized in that: Two anti-collision beam joints (2) are fixedly connected to both sides of the anti-collision beam body (1). Several pins (3) are fixedly connected to the anti-collision beam joints (2). An energy-absorbing box (4) is movably connected to the other end of the anti-collision beam joints (2). The pins (3) and the energy-absorbing box (4) are slidably connected. Several fixing rods (5) are fixedly connected to the energy-absorbing box (4). Two fixing rods (5) form a group. Clamping plates (6) are rotatably connected to the two fixing rods (5). A return spring (7) is fixedly connected between the clamping plates (6). A column mounting plate (8) is fixedly connected to the end of the energy-absorbing box (4) away from the anti-collision beam joints (2). Multiple collapse grooves (401) are provided on the energy-absorbing box (4).

2. A crash beam assembly according to claim 1, wherein: A connecting spring (9) is fixedly connected to the column mounting plate (8), and the other end of the connecting spring (9) is fixedly connected to the mounting column (10).

3. The anti-collision beam assembly according to claim 2, characterized in that: The mounting column (10) has two top plates (11) on both sides near the mounting plate (8). A transmission spring (12) is fixedly connected to the top plate (11), and a vibration sensor (13) is fixedly connected to the other end of the transmission spring (12). The vibration sensor (13) is fixedly connected to the mounting column (10).

4. A crash beam assembly according to claim 3, characterized in that: The first rotating shaft (14) is fixedly connected to the mounting column (10), and two first connecting rods (15) are rotatably connected to the first rotating shaft (14).

5. A crash beam assembly according to claim 4, characterized in that: The other end of the first link (15) is rotatably connected to the second link (16), and the other end of the second link (16) is rotatably connected to the second shaft (17), which is fixedly connected to the anti-collision beam body (1).

6. A crash beam assembly according to claim 5, characterized in that: A compression spring (18) is fixedly connected to the first rotating shaft (14), and the other end of the compression spring (18) is fixedly connected to the second rotating shaft (17).

7. A crash beam assembly according to claim 1, characterized in that: A folded reinforcing plate (19) is fixedly connected inside the anti-collision beam body (1), and several lightweight foam metals (20) are provided between the folded reinforcing plate (19) and the anti-collision beam body (1).

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