Energy absorption device, rear protection device and vehicle

Abstract

The application relates to the technical field of automobile safety accessories, and provides an energy-absorbing device, a rear protection device and a vehicle, wherein the energy-absorbing device comprises at least one group of main energy-absorbing pieces, the main energy-absorbing piece comprises an outer skin in a pipeline structure and having a first energy-absorbing space, a support structure surrounding the side wall of the outer skin and forming a second energy-absorbing space, and an adapter plate and a mounting plate arranged at opposite ends of the outer skin; at least one second energy-absorbing space is provided with a separation structure from the mounting plate to the adapter plate direction, the separation structure is connected to the outer skin and the support structure, and the second energy-absorbing space is separated to form a plurality of energy-absorbing sub-space areas. The application effectively reduces the impact and energy generated by the collision; when the energy-absorbing device is used at the tail of a large vehicle such as a tank truck, the damage of the front vehicle body during the rear-end collision can be reduced, the energy-absorbing device can realize energy absorption and blocking through deformation buffering, further loss reduction, and damage of the tank structure to cause leakage of dangerous chemicals is avoided.

Description

Technical Field

[0001] This invention relates to the field of automotive safety accessories technology, and in particular provides an energy-absorbing device, a rear protective device, and a vehicle. Background Technology

[0002] Dangerous goods transportation is characterized by its variety, high mobility, great danger, and difficulty in rescue, and major accidents related to it occur frequently.

[0003] Currently, most hazardous chemical tanker trucks lack rear protective beams with any energy-absorbing devices. In the event of a rear-end collision with a large vehicle, the tanker's main beam can bend under the immense impact, rendering the rear protective beam ineffective in stopping the rear-ending vehicle. This failure of the rear protective beam to stop the rear-ending vehicle can easily cause the tank to rupture, leading to a leak of hazardous chemicals. This leak can further cause secondary accidents at the scene of the initial collision. Summary of the Invention

[0004] One objective of this application is to provide an energy-absorbing device that addresses the problem that the rear protective beam fails to provide adequate protection during a rear-end collision involving a large vehicle, resulting in damage to the vehicle body.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] In a first aspect, embodiments of this application provide an energy-absorbing device, including at least one set of main energy-absorbing components. The main energy-absorbing components include an outer skin with a pipe structure and a first energy-absorbing space, a support structure surrounding the sidewalls of the outer skin and forming a second energy-absorbing space, and a transition plate and a mounting plate disposed at opposite ends of the outer skin. At least one second energy-absorbing space is provided with a partition structure in the direction from the mounting plate to the transition plate, and the partition structure divides the second energy-absorbing space into multiple energy-absorbing sub-space regions.

[0007] The beneficial effects of the embodiments of this application are as follows: The energy-absorbing device provided in this application uses a main energy-absorbing component to absorb energy. The adapter plate and mounting plate of the main energy-absorbing component are used for installation support and to withstand collisions. It also uses the first energy-absorbing space of the outer skin and the second energy-absorbing space formed by the support structure surrounding the side wall of the outer skin to buffer energy absorption. The partition structure divides the second energy-absorbing space into multiple energy-absorbing sub-space regions to absorb energy simultaneously, effectively improving the buffering energy absorption effect of the main energy-absorbing component. At the same time, the impact of the collision is absorbed by the deformation of the outer skin and the support structure, effectively reducing the impact and energy generated by the collision. When the energy-absorbing device is used at the rear of large vehicles such as tank trucks, it can also reduce the damage to the front vehicle body in a rear-end collision. The energy-absorbing device can achieve energy absorption and blocking through deformation buffering, further reducing losses and avoiding leakage of hazardous chemicals due to damage to the tank structure of the tank truck.

[0008] In one embodiment, each support structure is disposed within the first energy-absorbing space, and the main energy-absorbing component further includes at least one connecting structure disposed within the first energy-absorbing space, the connecting structure being connected to the outer skin and at least one support structure.

[0009] By adopting the above technical solution, the support structure is set in the first energy absorption space, and the second energy absorption space formed by the support structure surrounding the side wall of the outer skin will be located inside the outer skin. At the same time, a connecting structure is set in the first energy absorption space, and the connecting structure is connected to the outer skin and at least one support structure. Thus, the second energy absorption space formed by the support structure surrounding the side wall of the outer skin will be connected to form a whole, thereby increasing the overall buffering and energy absorption effect of the main energy absorption component.

[0010] In one embodiment, the opposite two ends of the support structure are bent toward the outer skin, and several weakening structures are formed on the support structure.

[0011] By adopting the above technical solution, the local stiffness of the supporting structure is weakened by using a weakened structure. When a collision occurs, the supporting structure is more likely to deform and fracture at the location of the weakened structure, so as to buffer and absorb the impact generated by the collision.

[0012] In one embodiment, the length of the support structure from the mounting plate to the adapter plate is less than the length of the outer skin from the mounting plate to the adapter plate.

[0013] By adopting the above technical solution, the length of the support structure in the direction from the mounting plate to the adapter plate is set to be less than the length of the outer skin in the same direction. When collision deformation occurs, the shorter support structure can reduce the triggering force and improve the buffering and energy absorption effect.

[0014] In one embodiment, the main energy-absorbing component further includes a first energy-absorbing filling layer disposed within the first energy-absorbing space.

[0015] By adopting the above technical solution, by setting a first energy-absorbing filling layer in the first energy-absorbing space, the buffering effect of the main energy-absorbing component is improved by utilizing the structural characteristics of the first energy-absorbing filling layer.

[0016] In one embodiment, the outer skin includes corrugated plates and outer partitions arranged at intervals, with the corrugated plates connected to adjacent outer partitions.

[0017] By adopting the above technical solution, the outer skin is composed of corrugated plates and outer partitions arranged at intervals. The energy absorption of the outer skin is achieved by utilizing the structure of the corrugated plates and outer partitions themselves, and the main buffer force is distributed on the outer skin of the main energy-absorbing component, thereby providing sufficient rigidity support.

[0018] In one embodiment, the energy-absorbing device further includes at least one set of auxiliary energy-absorbing components, which include an outer frame and a second energy-absorbing filling layer disposed within the outer frame; the edge portions of opposite ends of the outer frame are correspondingly connected to the adapter plate and the mounting plate.

[0019] By adopting the above technical solution, by setting up auxiliary energy-absorbing components, and by using the auxiliary energy-absorbing components in conjunction with the main energy-absorbing components to achieve energy absorption and buffering, a strong buffering effect is achieved at a specific location.

[0020] In one embodiment, there are two sets of main energy-absorbing components and one set of auxiliary energy-absorbing components. The auxiliary energy-absorbing components are disposed between the two sets of main energy-absorbing components, and both adapter plates are connected to one end of the outer frame, and both mounting plates are connected to the other end of the outer frame.

[0021] By adopting the above technical solution, two sets of main energy-absorbing components are set on opposite sides of the auxiliary energy-absorbing component and connected. When a collision occurs, the buffering effect of the main energy-absorbing components on both sides is better than that of the auxiliary energy-absorbing component in the middle. This reasonable distribution of buffering force ensures the overall buffering effect, and it can also play a sufficient buffering and energy-absorbing role when misalignment and skewed collisions occur.

[0022] Secondly, this application also provides a rear protective device, including a rear protective beam and an energy-absorbing device as described above. The rear protective beam includes a rear protective structure, a rear lower protective structure connected in parallel with the rear protective structure, and a reinforcing structure disposed on the rear protective structure and the rear lower protective structure. The energy-absorbing device is connected to the reinforcing structure.

[0023] The beneficial effects of the embodiments of this application are as follows: The rear protection device provided in the embodiments of this application has a strong buffering and energy absorption effect, based on the energy absorption device described above.

[0024] Thirdly, this application also provides a vehicle, including a frame, and the vehicle further includes a rear protective device as described above, the rear protective device being disposed at the rear of the frame.

[0025] The beneficial effects of the embodiments of this application are as follows: The vehicle provided in the embodiments of this application, having the above-mentioned rear protection device, can reduce the losses caused by traffic accidents by the deformation buffer energy absorption of the rear protection device. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the main energy-absorbing component provided in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the auxiliary energy-absorbing component provided in an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of an energy absorption device provided in an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of the structure of the rear protection device provided in an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the rear protective beam provided in an embodiment of the present invention;

[0032] Figure 6 A schematic diagram showing the connection between the rear protective structure and the reinforcing structure provided in an embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram of the rear lower protection structure provided in an embodiment of the present invention;

[0034] Figure 8 This is an exploded view of the main energy-absorbing component provided in an embodiment of the present invention.

[0035] The following are the labeling elements in the figure:

[0036] 100. Energy-absorbing device; 10. Main energy-absorbing component; 101. First energy-absorbing space; 102. Second energy-absorbing space; 11. Outer skin; 111. Corrugated plate; 112. Outer partition; 12. Support structure; 121. Weakening structure; 13. Adapter plate; 14. Mounting plate; 15. Connecting structure; 16. Separation structure; 20. Auxiliary energy-absorbing component; 21. Outer frame; 211. Cover plate; 212. Bracket; 22. Second energy-absorbing filling layer; 200. Rear protection device; 30. Rear protection beam; 31. Rear protection structure; 32. Lower rear protection structure; 33. Reinforcing structure. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein 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 and intended to explain the present invention, and should not be construed as limiting the present invention.

[0038] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] Please refer to Figure 1 , Figure 3 and Figure 8 In a first aspect, embodiments of this application provide an energy-absorbing device 100, including at least one set of main energy-absorbing components 10. The main energy-absorbing component 10 includes an outer skin 11 with a pipe structure and a first energy-absorbing space 101, a support structure 12 surrounding the sidewall of the outer skin 11 and forming a second energy-absorbing space 102, and a transition plate 13 and a mounting plate 14 disposed at opposite ends of the outer skin 11. At least one second energy-absorbing space 102 is provided with a partition structure 16 in the direction from the mounting plate 14 to the transition plate 13, and the partition structure 16 divides the second energy-absorbing space 102 into a plurality of energy-absorbing sub-space regions.

[0042] The outer skin 11 has a pipe structure, and the internal space of the pipe structure is the first energy-absorbing space 101. The adapter plate 13 and the mounting plate 14 are respectively installed at both ends of the outer skin 11 to form a closed effect on the first energy-absorbing space 101. The outer skin 11 can be formed by bending a single plate structure and connecting the ends to form a pipe structure; or, the outer skin 11 can be composed of multiple individual plates, which are connected sequentially along the circumferential direction. The circumferential operation is completed when the last plate is connected to the first plate. The structure of each plate can be flat, or the structure of each plate can be different. For example, at least one plate is flat and at least one plate is wavy. The impact force is guided to each plate according to the different stress levels of the plate structures, thereby improving the overall stiffness support of the main energy-absorbing component 10.

[0043] The adapter plate 13 and mounting plate 14 are respectively installed at opposite ends of the outer skin 11. The adapter plate 13 and mounting plate 14 are used to support the main energy-absorbing component 10 and to withstand collisions, respectively. For example, when the main energy-absorbing component 10 is used on the rear protective beam of the vehicle body, the mounting plate 14 of the main energy-absorbing component 10 is installed on the vehicle body, and the adapter plate 13 is used to support and connect the rear protective beam. In the event of a rear-end collision, the following vehicle hits the rear protective beam of the preceding vehicle and impacts the adapter plate 13 of the main energy-absorbing component 10, so that the entire main energy-absorbing component 10 can achieve the effect of energy absorption and buffering, reducing the damage caused by the accident.

[0044] The support structure 12 is disposed on the side wall of the outer skin 11, forming a second energy-absorbing space 102. Understandably, by setting multiple support structures 12, each support structure 12 is disposed on a corresponding area of ​​the side wall of the outer skin 11, thereby forming multiple second energy-absorbing spaces 102. The first energy-absorbing space 101 of the outer skin 11, and the multiple second energy-absorbing spaces 102 formed by the support structures 12 surrounding the side wall of the outer skin 11, work together to buffer the impact force generated by the collision, dispersing the impact force to the first energy-absorbing space 101 and the multiple second energy-absorbing spaces 102 to achieve energy absorption and buffering, effectively improving the overall energy absorption and buffering effect. The number of support structures 12 can be determined according to requirements. In this embodiment, four support structures 12 are evenly distributed along the central axis around the side wall of the outer skin 11, thus forming four second energy-absorbing spaces 102 in the corresponding areas of the side wall of the outer skin 11. Specifically, each support structure 12 can be disposed on the inner side of the outer skin 11 pipe structure, thereby forming each second energy-absorbing space 102 on the inner side of the outer skin 11; or, each support structure 12 can also be disposed on the outer side of the outer skin 11, thereby forming each second energy-absorbing space 102 on the outer side of the outer skin 11. Simultaneously, a partition structure 16 is provided within the second energy-absorbing space 102 to connect the support structure 12 to the outer skin 11, thereby strengthening the overall structure and improving the buffering and energy-absorbing effect. One or more partition structures 16 can be provided in each second energy-absorbing space 102; in this embodiment, two partition structures 16 are provided in each second energy-absorbing space 102 to further divide the second energy-absorbing space 102 into three sub-spaces.

[0045] The partition structure 16 can be a partition plate or a row of rod-like structures. The support structure 12 can be a support plate, and the support plate is arranged along the direction from the mounting plate 14 to the transition plate 13, so that when subjected to a collision impact, the support plate can withstand impact deformation along its height direction to absorb energy.

[0046] The energy-absorbing device 100 provided in this application embodiment uses a main energy-absorbing component 10 to absorb energy. The adapter plate 13 and mounting plate 14 of the main energy-absorbing component 10 are used for installation support and to withstand collisions. It also performs buffering energy absorption through the first energy-absorbing space 101 of the outer skin 11 and the second energy-absorbing space 102 formed by the support structure 12 surrounding the side wall of the outer skin 11. The partition structure 16 divides the second energy-absorbing space 102 into multiple energy-absorbing sub-space regions to absorb energy simultaneously, effectively improving the buffering energy absorption effect of the main energy-absorbing component 10. At the same time, the deformation of the outer skin 11 and the support structure 12 absorbs the impact of the collision, effectively reducing the impact and energy generated by the collision. When the energy-absorbing device 100 is used at the rear of large vehicles such as tank trucks, it can also reduce the damage to the front vehicle body in a rear-end collision. The energy-absorbing device 100 can achieve energy absorption and blocking through deformation buffering, further reducing losses and preventing the leakage of hazardous chemicals due to damage to the tank structure of the tank truck.

[0047] Please refer to Figure 1 In one embodiment, each support structure 12 is disposed within the first energy-absorbing space 101, and the second energy-absorbing spaces 102 formed by the corresponding areas of the sidewalls of the outer skin 11 surrounded by each support structure 12 are all disposed within the inner portion of the outer skin 11. The main energy-absorbing component 10 also includes at least one connecting structure 15 disposed within the first energy-absorbing space 101, and the connecting structure 15 is connected to the outer skin 11 and at least one support structure 12. The connecting structure 15 is disposed within the first energy-absorbing space 101 and connected to the outer skin 11 and at least one support structure 12, so that the connecting structure 15 connects part or all of the second energy-absorbing spaces 102 to achieve linkage, so that when the main energy-absorbing component 10 is used as a whole for energy absorption and buffering, each second energy-absorbing space 102 and the first energy-absorbing space 101 can cooperate to buffer the impact. The number of connecting structures 15 can be one or more. Each connecting structure 15 is arranged in the first energy-absorbing space 101 along the direction from the mounting plate 14 to the adapter plate 13 and is connected to the outer skin 11 and the support structure 12. The connecting structure 15 can be a partition plate or other rod-shaped, block-shaped structures to achieve the connecting function.

[0048] Please refer to Figure 1In one embodiment, the opposite ends of the support structure 12 are bent toward the outer skin 11, and a plurality of weakening structures 121 are formed on the support structure 12. The aforementioned weakening structures 121 refer to structures used to weaken the structural strength of the support structure 12, so that the support structure 12 can fracture at the weakening structure 121 to absorb energy. The weakening structure 121 can be a through hole opened in the support structure 12, a fracture opening formed by cutting in the support structure 12, or a thinner area formed by grinding the support structure 12, etc. When the support structure 12 is subjected to a large external force, it is easy to fracture at the weakening structure 121. The support structure 12 bends toward the outer skin 11, so that the cross-section of the support structure 12 has a U-shaped or wavy structure, etc. The weakening structures 121 are formed on the bent portion of the support structure 12 to weaken local stiffness. When a collision occurs, the support structure 12 is more likely to deform and fracture at the location of the weakening structure 121, thereby buffering and absorbing the impact of the collision. In this embodiment, weakening holes are used as weakening structures 121. The number of weakening holes can be one or more; and the weakening holes are located on the support structure 12 near the connecting structure 15.

[0049] Please refer to Figure 1 In one embodiment, the length of the support structure 12 from the mounting plate 14 to the adapter plate 13 is less than the length of the outer skin 11 from the mounting plate 14 to the adapter plate 13. By setting the length of the support structure 12 from the mounting plate 14 to the adapter plate 13 to be less than the length of the outer skin 11 in the same direction, the shorter support structure 12 can reduce the triggering force and improve the buffering energy absorption effect when collision deformation occurs. It can be understood that the support structure 12 is connected to the outer skin 11, and both ends of the support structure 12 in the direction from the mounting plate 14 to the adapter plate 13 are suspended; or, one end of the support structure 12 is connected to the mounting plate 14 or the adapter plate 13, and the other end of the support structure 12 is suspended.

[0050] Please refer to Figure 1 In one embodiment, the main energy-absorbing component 10 further includes a first energy-absorbing filling layer (not shown) disposed within the first energy-absorbing space 101. By placing the first energy-absorbing filling layer within the first energy-absorbing space 101, the main energy-absorbing component 10 can absorb and buffer energy when subjected to collision or impact. Simultaneously, the first energy-absorbing filling layer also assists in providing buffering, thereby increasing the buffering effect of the main energy-absorbing component 10. The first energy-absorbing filling layer can adopt a honeycomb structure, such as a metal honeycomb core or a plastic honeycomb core; it can also adopt other energy-absorbing materials such as rubber cushioning pads or foam layers. The buffering force of the main energy-absorbing component 10 can be adjusted by using different first energy-absorbing filling layers. It is understandable that placing the first energy-absorbing filling layer within the second energy-absorbing space 102 can also achieve the purpose of improving the buffering and energy-absorbing effect of the main energy-absorbing component 10.

[0051] Please refer to Figure 1 In one embodiment, the outer skin 11 includes corrugated plates 111 and outer partitions 112 arranged at intervals, with the corrugated plates 111 connected to adjacent outer partitions 112. The outer skin 11 is composed of corrugated plates 111 and outer partitions 112 arranged at intervals. The energy absorption of the outer skin 11 is achieved by utilizing the structure of the corrugated plates 111 and outer partitions 112 themselves, distributing the main buffering force on the outer skin 11 of the main energy-absorbing member 10, thereby providing sufficient rigidity support. In this embodiment, the outer skin 11 is arranged in a ring to form a cylindrical structure with a rectangular cross-section. Therefore, the outer skin 11 includes two corrugated plates 111 and two outer partitions 112. The two corrugated plates 111 are arranged opposite to each other, and the two outer partitions 112 are also arranged opposite to each other. The corrugated plates 111 and the outer partitions 112 are spaced apart and connected in sequence. The energy-absorbing structure composed of the corrugated plates 111 on opposite sides and the outer partitions 112 on opposite sides can distribute the main buffer force around the main energy-absorbing member 10 in a just right way, thereby providing sufficient rigidity support.

[0052] Please refer to Figures 1 to 3In one embodiment, the energy-absorbing device 100 further includes at least one set of auxiliary energy-absorbing components 20. Each auxiliary energy-absorbing component 20 includes an outer frame 21 and a second energy-absorbing filling layer 22 disposed within the outer frame 21. The edges of opposite ends of the outer frame 21 are correspondingly connected to the adapter plate 13 and the mounting plate 14. That is, the auxiliary energy-absorbing component 20 is disposed on one side of the main energy-absorbing component 10, and one end of the outer frame 21 is connected to the adapter plate 13, while the other end of the outer frame 21 is also connected to the adapter plate 13. Thus, the main energy-absorbing component 10 and the auxiliary energy-absorbing component 20 are approximately on the same plane, and both have end faces in the same direction to withstand collision impacts. The auxiliary energy-absorbing component 20 is used to connect to and cooperate with the main energy-absorbing component 10 to achieve an energy-absorbing and buffering effect. The outer frame 21 includes end plates 211 on both ends and a support 212 positioned between the end plates 211. The support 212 is erected between the end plates 211 to form the outer frame 21, providing an auxiliary energy absorption and buffering effect. A second energy-absorbing filling layer 22 is placed inside the outer frame 21 to enhance the energy absorption and buffering effect. The second energy-absorbing filling layer 22 can have a honeycomb structure, such as a metal honeycomb core or a plastic honeycomb core; it can also be made of other energy-absorbing materials such as rubber cushioning pads or foam layers. The buffering force of the main energy-absorbing component 10 can be adjusted by using different second energy-absorbing filling layers 22. Alternatively, the outer frame 21 may be used directly without a second energy-absorbing filling layer 22. Since the structure of the auxiliary energy absorber 20 is simpler than that of the main energy absorber 10, the buffering energy absorption effect of the auxiliary energy absorber 20 is weaker than that of the main energy absorber 10. Therefore, the difference in the buffering energy absorption effects of the auxiliary energy absorber 20 and the main energy absorber 10 are used in combination to achieve a strong buffering effect at a specific location. For example, one set of main energy absorber 10 and one set of auxiliary energy absorber 20 are provided, and the main energy absorber 10 and the auxiliary energy absorber 20 are connected to each other to achieve buffering and energy absorption; or, one set of main energy absorber 10 is provided, and two sets of auxiliary energy absorber 20 are provided, with the two sets of auxiliary energy absorber 20 located on opposite sides of the main energy absorber 10. The main energy absorber 10 is used to withstand the main impact, and the auxiliary energy absorber 20 is used to provide auxiliary buffering from both sides; or, two sets of main energy absorber 10 are provided, and one set of auxiliary energy absorber 20 is provided, with the two sets of main energy absorber 10 located on opposite sides of the auxiliary energy absorber 20. The main energy absorber 10 mainly withstands the impact from both sides, and the two main energy absorber 10 are connected by the auxiliary energy absorber 20, which also ensures the buffering and energy absorption effect during impact.

[0053] Please refer to Figures 1 to 3In one embodiment, there are two sets of main energy-absorbing components 10 and one set of auxiliary energy-absorbing components 20. The auxiliary energy-absorbing component 20 is disposed between the two sets of main energy-absorbing components 10, so that the two sets of main energy-absorbing components 10 are located on opposite sides of the auxiliary energy-absorbing component 20 and connected to form a whole. Both adapter plates 13 are connected to one end of the outer frame 21, and both mounting plates 14 are connected to the other end of the outer frame 21. Thus, the opposite ends of the two sets of main energy-absorbing components 10 and auxiliary energy-absorbing components 20 are all in the same plane, and the two sets of main energy-absorbing components 10 and auxiliary energy-absorbing components 20 work together to achieve a buffering and energy-absorbing effect. When used at the rear of a vehicle, the cooperation of the two sets of main energy-absorbing components 10 and auxiliary energy-absorbing components 20 can ensure a buffering and support effect in a frontal impact. At the same time, in the event of a misaligned rear-end collision, the two sets of main energy-absorbing components 10 on both sides of the auxiliary energy-absorbing component 20 can also play a good energy-absorbing and protective role.

[0054] Please refer to Figures 1 to 7 Secondly, this application also provides a rear protective device 200, including a rear protective beam 30 and an energy-absorbing device 100 as described above. The rear protective beam 30 includes a rear protective structure 31, a rear lower protective structure 32 connected side-by-side with the rear protective structure 31, and a reinforcing structure 33 disposed on the rear protective structure 31 and the rear lower protective structure 32. The energy-absorbing device 100 is connected to the reinforcing structure 33. The reinforcing structure 33 includes reinforcing ribs, reinforcing plates, a rear support plate, and a rear sealing plate. The rear sealing plate has mounting holes for connection to the energy-absorbing device 100.

[0055] Thirdly, this application also provides a vehicle, including a frame, and the vehicle further includes a rear protective device 200 as described above, which is disposed at the rear of the frame. The vehicle provided in this application, having the aforementioned rear protective device 200, can reduce losses from traffic accidents through the deformation and energy absorption of the rear protective device 200.

[0056] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An energy absorbing device, characterized by: The energy-absorbing device comprises at least one set of main energy-absorbing members, each of which comprises an outer skin in the form of a pipe structure and having a first energy-absorbing space, a support structure surrounding the outer skin and forming a second energy-absorbing space, and an adapter plate and a mounting plate arranged at opposite ends of the outer skin; at least one of the second energy-absorbing spaces is provided with a partition structure from the mounting plate to the adapter plate, which divides the second energy-absorbing space into a plurality of energy-absorbing sub-space regions; each of the support structures is arranged in the first energy-absorbing space, and the main energy-absorbing member further comprises at least one connecting structure arranged in the first energy-absorbing space, which is connected to the outer skin and at least one of the support structures; opposite sides of the support structure are bent towards the outer skin, and a plurality of weakening structures are formed on the support structure; the energy-absorbing device further comprises at least one set of auxiliary energy-absorbing members, each of which comprises an outer frame and a second energy-absorbing filler arranged in the outer frame; the edge of the opposite ends of the outer frame is connected to the adapter plate and the mounting plate; the number of main energy-absorbing members is two sets, the number of auxiliary energy-absorbing members is one set, the auxiliary energy-absorbing members are arranged between the two sets of main energy-absorbing members, and the two adapter plates are connected to one end of the outer frame, and the two mounting plates are connected to the other end of the outer frame.

2. The energy absorbing device of claim 1, wherein: The length of the support structure from the mounting plate to the adapter plate is less than the length of the outer skin from the mounting plate to the adapter plate.

3. The energy absorbing device of claim 1, wherein: The main energy-absorbing member further comprises a first energy-absorbing filler arranged in the first energy-absorbing space.

4. The energy absorbing device of claim 1, wherein: The outer skin comprises corrugated plates and outer partition plates arranged at intervals, and the corrugated plates are connected to adjacent outer partition plates.

5. A rear guard characterized by: The vehicle further comprises a rear protection device as claimed in claim 5, which is arranged at the tail of the vehicle frame.

6. A vehicle comprising a vehicle frame, characterised in that: The vehicle further comprises a rear protection device as claimed in claim 5, which is arranged at the tail of the vehicle frame.

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