Energy absorbing device for a vehicle and vehicle

Abstract

This utility model discloses an energy-absorbing device for a vehicle and a vehicle in general. The vehicle includes a body structure and an exhaust structure, with the exhaust structure located below the body structure. The energy-absorbing device is mounted between the body structure and the exhaust structure. The energy-absorbing device includes a fixing part located above the energy-absorbing part, adapted to be fixed to the body structure. The energy-absorbing part includes multiple elastic structures, which are sequentially nested and fitted together. All elastic structures extend vertically and are fixed to the fixing part, and are vertically opposite to the exhaust structure. Therefore, in the event of an impact to the exhaust structure, the multiple elastic structures within the energy-absorbing part can absorb impact energy, enhancing the impact resistance of the energy-absorbing device and reducing the risk of damage to the vehicle's exhaust structure, deformation of the body structure, fuel leakage, and short circuits.

Description

Technical Field

[0001] This utility model relates to the field of energy absorption devices, and in particular to an energy absorption device for a vehicle and a vehicle having the energy absorption device. Background Technology

[0002] In the existing technology, an energy-absorbing device is installed between the vehicle body structure and the exhaust structure. However, the existing energy-absorbing device has insufficient impact resistance, which can easily lead to problems such as damage to the exhaust structure, deformation of the vehicle body structure, fuel leakage and short circuit. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide an energy-absorbing device for vehicles that enhances the impact resistance of the energy-absorbing device, thereby reducing the risk of problems such as damage to the vehicle's exhaust structure, deformation of the vehicle body structure, fuel leakage, and short circuits.

[0004] This utility model further proposes a vehicle.

[0005] According to a first aspect of the present invention, an energy-absorbing device for a vehicle includes a vehicle body structure and an exhaust structure, the exhaust structure being located below the vehicle body structure. The energy-absorbing device is used to be assembled between the vehicle body structure and the exhaust structure. The energy-absorbing device includes a fixing part and an energy-absorbing part, the fixing part and the energy-absorbing part being arranged in a vertical direction, the fixing part being located above the energy-absorbing part, the fixing part being adapted to be fixed to the vehicle body structure, and the energy-absorbing part including a plurality of elastic structures, the plurality of elastic structures being sequentially nested and fitted together, the plurality of elastic structures extending in a vertical direction and being fixed to the fixing part, and the plurality of elastic structures being opposite to the exhaust structure in a vertical direction.

[0006] According to the energy-absorbing device of the first aspect of the present invention, when the exhaust structure is impacted, for example, when the vehicle bottoms out and impacts the exhaust structure, by providing multiple elastic structures in the energy-absorbing part, multiple elastic structures can absorb the impact energy, which is beneficial to enhance the impact resistance of the energy-absorbing device, thereby helping to reduce the risk of problems such as damage to the vehicle exhaust structure, deformation of the vehicle body structure, fuel leakage and short circuit.

[0007] In some examples of this utility model, the end of each elastic structure facing the fixed part is fixedly connected to the fixed part.

[0008] In some examples of this invention, at least two elastic structures have different lengths along the vertical direction.

[0009] In some examples of this utility model, the length of the outer elastic structure in any two adjacent elastic structures is greater than the length of the inner elastic structure.

[0010] In some examples of this utility model, the energy absorption device further includes: a limiting plate, at least one end of the elastic structure facing away from the fixed part is fixedly connected to the limiting plate, and the limiting plate is adapted to contact the exhaust structure.

[0011] In some examples of this utility model, each elastic structure is fixedly connected to a limiting plate at the end away from the fixed part, and the limiting plates on two adjacent elastic structures are partially opposite each other in the vertical direction.

[0012] In some examples of this utility model, the limiting plate is a ring structure.

[0013] In some examples of this utility model, the fixing part is formed with a mounting hole, and the energy absorption device is fixed to the vehicle body structure by passing a fastener through the mounting hole.

[0014] In some examples of this utility model, the elastic structure is a spring.

[0015] According to a second aspect embodiment of the present invention, the vehicle includes: a body structure and an exhaust structure, the exhaust structure being located below the body structure and spaced apart from the body structure; an energy absorption device, the energy absorption device being the aforementioned energy absorption device for a vehicle, the energy absorption device being assembled between the body structure and the exhaust structure, and a fixing part being fixed to the body structure.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is an assembly diagram of the vehicle body structure, exhaust structure, and energy absorption device according to an embodiment of the present utility model; Figure 2 yes Figure 1 Enlarged view of point A.

[0018] Figure label: Body structure 20; Reinforcing beam 21; Floor 22; Exhaust structure 30; Energy absorption device 40; fixing part 41; energy absorption part 42; limiting plate 43; elastic structure 421; first elastic structure 422; second elastic structure 423; third elastic structure 424; first limiting plate 431; second limiting plate 432; third limiting plate 433; Fastener 50. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown 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 are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] The following is for reference. Figures 1-2 This invention describes an energy-absorbing device 40 for a vehicle according to an embodiment of the present invention.

[0021] like Figures 1-2 As shown, according to the first aspect embodiment of the present invention, an energy-absorbing device 40 for a vehicle includes a vehicle body structure 20 and an exhaust structure 30. The exhaust structure 30 is located below the vehicle body structure 20. The energy-absorbing device 40 is used to be assembled between the vehicle body structure 20 and the exhaust structure 30. The energy-absorbing device 40 includes a fixing part 41 and an energy-absorbing part 42. The fixing part 41 and the energy-absorbing part 42 are arranged in a vertical direction. The fixing part 41 is located above the energy-absorbing part 42. The fixing part 41 is adapted to be fixed to the vehicle body structure 20. The energy-absorbing part 42 includes a plurality of elastic structures 421. The plurality of elastic structures 421 are sequentially fitted together. The plurality of elastic structures 421 all extend in a vertical direction and are all fixed to the fixing part 41. The plurality of elastic structures 421 are all opposite to the exhaust structure 30 in a vertical direction.

[0022] The exhaust structure 30 can be constructed as an exhaust pipe and can be made of materials such as stainless steel or titanium alloy. The exhaust structure 30 can be formed by stamping, mold casting, or other methods. The fixing part 41 can be made of materials such as aluminum alloy or steel and can be formed by stamping, mold casting, or other methods. The fixing part 41 can be constructed as a plate, column, or other shapes. For example, the fixing structure can be fixed to the reinforcing beam 21 of the vehicle body structure 20, and the reinforcing beam 21 can be fixed to the floor 22 of the vehicle body structure 20. The fixing part 41 can be welded to the vehicle body structure 20 and can be fixed to the vehicle body structure 20 by fasteners 50 such as bolts or clips. This application uses the example of the fixing part 41 being fixed to the vehicle body structure 20 by hexagonal flange bolts for illustration. The elastic structure 421 can be made of materials such as spring steel or polyurethane elastomer. For example, the elastic structure 421 can be constructed as a helical spring. As an embodiment, the elastic structure 421 can be welded to the fixing part 41. As another embodiment, the elastic structure 421 can be fixedly connected to the fixing part 41 by fasteners 50 such as bolts or clips. This application will describe the example of the elastic structure 421 being welded to the fixing part 41.

[0023] The energy-absorbing part 42 may include one, two, or three equal numbers of elastic structures 421. This application describes an energy-absorbing part 42 comprising three elastic structures 421 as an example. Exemplarily, the energy-absorbing part 42 may include a first elastic structure 422, a second elastic structure 423, and a third elastic structure 424, which are sequentially fitted together, with the first elastic structure 422 fitted onto the second elastic structure 423, and the second elastic structure 423 fitted onto the third elastic structure 424. As one embodiment, the first elastic structure 422, the second elastic structure 423, and the third elastic structure 424 extend to the same length in the vertical direction. As another embodiment, at least two of the first elastic structures 422, the second elastic structure 423, and the third elastic structure 424 have different lengths in the vertical direction.

[0024] When the vehicle bottoms out and the exhaust structure 30 is subjected to an external impact, the exhaust structure 30 first contacts multiple elastic structures 421. These elastic structures 421 absorb the impact energy, enhancing the impact resistance of the energy-absorbing device 40. This reduces the risk of damage to the exhaust structure 30, deformation of the body structure 20, fuel leakage, and short circuits, and also lowers the risk of increased vehicle repair costs due to structural damage. Since the multiple elastic structures 421 extend vertically and are opposite to the exhaust structure 30, they compress the elastic structures 421 vertically upon impact. This reduces the risk of the exhaust structure 30 shifting towards the fuel tank and wiring harness of the body structure 20, further reducing the risk of fuel leakage and short circuits, and improving vehicle safety. The arrangement of the body structure 20, energy-absorbing device 40, and exhaust structure 30 along the first direction optimizes the vehicle's structural layout.

[0025] Therefore, by installing the energy-absorbing device 40 in the vehicle, it is beneficial to enhance the impact resistance of the energy-absorbing device 40, thereby reducing the risk of problems such as damage to the vehicle exhaust structure 30, deformation of the body structure 20, fuel leakage and short circuit, and also helps to optimize the structural layout of the vehicle.

[0026] In some examples of embodiments of this utility model, such as Figure 2 As shown, the end of each elastic structure 421 facing the fixing part 41 is fixedly connected to the fixing part 41.

[0027] In one embodiment, the end of each elastic structure 421 facing the fixing part 41 can be connected to the fixing part 41 by welding. In another embodiment, the end of each elastic structure 421 facing the fixing part 41 can be fixedly connected to the fixing part 41 by bolts. In yet another embodiment, the end of each elastic structure 421 facing the fixing part 41 can be snapped onto the fixing part 41 by a clip. In yet another embodiment, the end of each elastic structure 421 facing the fixing part 41 can be bonded to the fixing part 41 by structural adhesive.

[0028] Each elastic structure 421 has its end facing the fixed part 41 fixedly connected to the fixed part 41. This limits the risk of the elastic structure 421 shifting horizontally, which helps ensure that the elastic structure 421 absorbs energy vertically when the exhaust structure 30 is impacted. It also reduces the risk that the horizontal shift of the elastic structure 421 will cause the exhaust structure 30 to shift horizontally, bringing it closer to the fuel tank or wiring harness of the vehicle body structure 20, thereby improving vehicle driving safety. If only some of the elastic structures 421 are fixedly connected to the fixed part 41, it is easy to cause excessive local stress in the fixed part 41. In this application, the end of each elastic structure 421 facing the fixed part 41 is fixedly connected to the fixed part 41, which helps reduce the risk of excessive local stress in the energy absorption device 40.

[0029] In some examples of embodiments of this utility model, such as Figure 2 As shown, at least two elastic structures 421 have different lengths in the vertical direction.

[0030] In one embodiment, the length of the first elastic structure 422 is greater than the length of the second elastic structure 423, and the length of the second elastic structure 423 is greater than the length of the third elastic structure 424. In another embodiment, the length of the third elastic structure 424 is greater than the length of the second elastic structure 423, and the length of the second elastic structure 423 is greater than the length of the first elastic structure 422. In yet another embodiment, the length of the second elastic structure 423 is greater than the length of the third elastic structure 424, and the length of the third elastic structure 424 is greater than the length of the first elastic structure 422.

[0031] When the vehicle bottoms out and the exhaust structure 30 is impacted, at least two elastic structures 421 have different lengths in the vertical direction. This allows the exhaust structure 30 to contact the longer elastic structure 421 first when it is impacted and moves upward, causing it to compress. When the longer elastic structure 421 is compressed to the same length as the shorter elastic structure 421, the longer and shorter elastic structures 421 are compressed synchronously. This allows the elastic structures 421 with different stiffnesses to compress and absorb energy sequentially, achieving a graded energy absorption effect. This enhances the impact resistance of the energy absorption device 40, thereby reducing the risk of damage to the vehicle exhaust structure 30, deformation of the vehicle body structure 20, fuel leakage, and short circuits. When the lengths of the elastic structures 421 are different, the longer elastic structure 421 can withstand the impact energy first and initially absorb the impact energy. After the initial absorption of the impact energy, the remaining impact energy is gradually transferred to the shorter, high-stiffness elastic structure 421 through the compression process. This staged absorption of impact energy helps to reduce the risk of stress concentration in the energy absorption device 40 caused by the concentrated absorption of impact energy. It also helps to reduce the overlapping area of ​​multiple elastic structures 421, thereby reducing the risk of frictional interference between multiple elastic structures 421 and reducing wear on the surface of the elastic structure 421, thus extending the service life of the elastic structure 421.

[0032] In some examples of embodiments of this utility model, such as Figure 2 As shown, the length of the outer elastic structure 421 in any two adjacent elastic structures 421 is greater than the length of the inner elastic structure 421.

[0033] For example, the first elastic structure 422 is sleeved on the second elastic structure 423, the second elastic structure 423 is sleeved on the third elastic structure 424, the length of the first elastic structure 422 is greater than the length of the second elastic structure 423, and the length of the second elastic structure 423 is greater than the length of the third elastic structure 424.

[0034] In any two adjacent elastic structures 421, the length of the outer elastic structure 421 is greater than the length of the inner elastic structure 421. This allows the outermost elastic structure 421 to be compressed only when the exhaust structure 30 is subjected to a minor impact, while the outermost and adjacent elastic structures 421 are compressed when the exhaust structure 30 is subjected to a larger impact. The deformation stiffness of multiple elastic structures 421 can be increased sequentially, which is beneficial for the elastic structures 421 to absorb impact energy in stages from the outside to the inside, and for achieving the gradual dissipation of impact energy. This, in turn, helps to improve the protective performance of the exhaust structure 30 and the body structure 20, and also helps to extend the service life of the inner high-stiffness elastic structure 421.

[0035] If the length of the outer elastic structure 421 is greater than the length of the inner elastic structure 421 in any two adjacent elastic structures 421, the compression overlap area of ​​the two adjacent elastic structures 421 during the compression process can be further reduced, which helps to reduce the risk of friction between the two adjacent elastic structures 421 and improves the smoothness of the compression process of the elastic structure 421.

[0036] In some examples of embodiments of this utility model, such as Figure 2 As shown, the energy absorption device 40 also includes a limiting plate 43, at least one elastic structure 421 is fixedly connected to the end of the fixed part 41 away from the limiting plate 43, and the limiting plate 43 is adapted to contact the exhaust structure 30.

[0037] The limiting plate 43 can be made of materials such as aluminum alloy or steel. It can be formed by stamping, mold casting, or other methods. The limiting plate 43 can be constructed as a ring structure, a plate structure, or other forms. This application uses a ring structure as an example for illustration. As one embodiment, a first limiting plate 431 can be fixedly connected to the end of the first elastic structure 422 away from the fixed part 41. As another embodiment, a first limiting plate 431 can be fixedly connected to the end of the first elastic structure 422 away from the fixed part 41, and a second limiting plate 432 can be fixedly connected to the end of the second elastic structure 423 away from the fixed part 41.

[0038] As another embodiment, a first limiting plate 431 can be fixedly connected to the end of the first elastic structure 422 facing away from the fixed part 41, a second limiting plate 432 can be fixedly connected to the end of the second elastic structure 423 facing away from the fixed part 41, and a third limiting plate 433 can be fixedly connected to the end of the third elastic structure 424 facing away from the fixed part 41. This application describes the example where each elastic structure 421 has a limiting plate 43 connected to its end facing away from the fixed part 41.

[0039] The limiting plate 43 can be fixedly connected to the elastic structure 421 by welding, bolts, or other methods. Alternatively, the limiting plate 43 can be integrally formed with the elastic structure 421. When the exhaust structure 30 is impacted, the limiting plate 43 and the exhaust structure 30 are in surface-to-surface contact, increasing the stress-bearing area of ​​the exhaust structure 30. This helps reduce the risk of dents and cracks caused by stress concentration, thus extending the service life of the exhaust structure 30. It also helps reduce the relative sliding between the elastic structure 421 and the exhaust structure 30, reducing the risk of the elastic structure 421 shifting. Furthermore, it helps reduce frictional noise caused by relative sliding between the elastic structure 421 and the exhaust structure 30, improving vehicle driving comfort. Finally, it helps reduce the risk of damage to the elastic structure 421 due to relative sliding, extending its service life and reducing the maintenance costs of the energy-absorbing device 40.

[0040] In some examples of embodiments of this utility model, such as Figure 2 As shown, each elastic structure 421 is fixedly connected to a limiting plate 43 at the end away from the fixed part 41, and the limiting plates 43 on two adjacent elastic structures 421 are partially opposite each other in the vertical direction.

[0041] In this configuration, the orthographic projections of the limiting plates 43 on adjacent elastic structures 421 overlap in the vertical direction. For example, the first limiting plate 431 is located below the second limiting plate 432, and the second limiting plate 432 is located below the third limiting plate 433. When the exhaust structure 30 is impacted, it moves upward to contact the first limiting plate 431, and the first elastic structure 422 compresses to buffer external energy. When the first limiting plate 431 moves upward to contact the second limiting plate 432, the second elastic structure 423 compresses synchronously, meaning that the first elastic structure 422 and the second elastic structure 423 simultaneously compress to buffer external energy. When the second limiting plate 432 moves upward to contact the third limiting plate 433, the second elastic structure 423 compresses synchronously, meaning that the first elastic structure 422, the second elastic structure 423, and the third elastic structure 424 simultaneously compress to buffer external energy. The stiffness of the compression paths of the first elastic structure 422, the second elastic structure 423, and the third elastic structure 424 increases sequentially, enabling graded triggering. Through the sequential compression and energy absorption of the first elastic structure 422, the second elastic structure 423, and the third elastic structure 424, the protective performance of the exhaust structure 30 and the body structure 20 can be improved.

[0042] The vertically aligned limiting plates 43 on adjacent elastic structures 421 allow the outer elastic structure 421 to compress and absorb energy first. Through this compression process, the remaining impact energy is gradually transferred to the inner elastic structure 421, resulting in a gradual dissipation of the impact energy on the energy-absorbing device 40. This reduces the risk of overload on a single elastic structure 421 when the impact energy is too large, and extends the service life of the elastic structure 421. The vertically spaced limiting plates 43 also reduce the risk of immediate contact and collision between adjacent limiting plates 43 upon impact. During vehicle operation, the exhaust structure 30 may sway. The vertically staggered arrangement of the limiting plates 43 ensures stable contact between the exhaust structure 30 and at least one limiting plate 43. Furthermore, the vertically staggered arrangement of the limiting plates 43 ensures that each elastic structure 421 experiences relatively independent forces, improving the reliability of the compression energy absorption of the elastic structure 421.

[0043] In some examples of embodiments of this utility model, such as Figure 2 As shown, the limiting plate 43 has a ring structure.

[0044] The ring-shaped limiting plate 43 allows the inner elastic structure 421 to pass through the center of the outer limiting plate 43, which helps reduce assembly conflicts between the limiting plate 43 and the elastic structure 421 and optimizes the structural layout of the energy-absorbing device 40. The ring-shaped design of the limiting plate 43 also helps reduce the weight of the energy-absorbing device 40, thus contributing to vehicle lightweighting goals, reducing manufacturing costs, and allowing for more space for other vehicle components. The energy-absorbing device 40 is installed between the body structure 20 and the exhaust structure 30, allowing for observation of the elastic structure 421 through the central hole of the ring-shaped structure to detect early faults and reduce the risk of accumulated faults leading to the failure of the energy-absorbing device 40.

[0045] In some examples of embodiments of this utility model, the fixing part 41 is formed with a mounting hole, and the energy absorption device 40 is fixed to the vehicle body structure 20 by passing a fastener 50 through the mounting hole.

[0046] The mounting holes can be formed by stamping, drilling, or other methods, and can be constructed in shapes such as circles, rectangles, and hexagons. The fastener 50 in this application is described using hexagonal flange bolts. There can be one, two, or three mounting holes; this application uses two mounting holes as an example. In this application, the two mounting holes and two fasteners 50 are configured in a one-to-one correspondence. This one-to-one correspondence between the two mounting holes and the two fasteners 50 helps ensure the connection stability between the fixing part 41 and the vehicle body structure 20.

[0047] The mounting holes and fasteners 50 work together to secure the fixing part 41 to the vehicle body structure 20. This helps limit the fixing part 41, reducing the risk of energy absorption failure of the elastic structure 421 due to the offset of the fixing part 41. It also reduces abnormal noise caused by the fixing part 41 colliding with the vehicle body structure 20 due to shaking. If the fixing part 41, elastic structure 421, or limiting plate 43 is damaged, the damaged energy absorption device 40 can be replaced individually by removing the fasteners 50. This reduces the difficulty of installing and removing the fixing part 41 and also lowers vehicle maintenance costs.

[0048] In some examples of embodiments of this utility model, such as Figure 2 As shown, the elastic structure 421 is a spring.

[0049] Among them, the spring can undergo elastic deformation. When the spring is impacted, it is compressed in the vertical direction, which can convert the impact energy into the elastic potential energy of the spring. When the impact disappears, the spring can return to its original shape and release the elastic potential energy. The elastic structure 421 is set as a spring, which helps to reduce the hard contact between the exhaust structure 30 and the body structure 20, reduces the contact damage between the elastic structure 421 and the body structure 20, and also reduces the risk of extrusion deformation or cracking of the exhaust structure 30 due to hard contact.

[0050] For example, the elastic structure 421 can be configured as an outer spring with a small wire diameter, large diameter, and low stiffness, and an inner spring with a large wire diameter, small diameter, and high stiffness. When the exhaust structure 30 is subjected to a slight impact, the outer spring with low stiffness compresses and absorbs energy. When the impact is larger, the outer spring with low stiffness compresses until it contacts the inner spring with high stiffness, and the outer spring drives the inner spring with high stiffness to compress synchronously, achieving a staged energy absorption effect.

[0051] Multiple springs are sequentially nested together. The elastic deformation of the springs guides their compression in the vertical direction, thereby causing the exhaust structure 30 to shift vertically. This helps reduce the risk of fuel tank leakage or short circuits caused by the displacement of the exhaust structure 30, thus improving vehicle driving safety. The lower procurement and manufacturing costs of the springs also contribute to reducing the manufacturing and maintenance costs of the energy-absorbing device 40.

[0052] like Figure 1As shown, according to a second aspect embodiment of the present invention, the vehicle includes: a body structure 20 and an exhaust structure 30, the exhaust structure 30 being located below and spaced apart from the body structure 20; and an energy-absorbing device 40, which is the aforementioned energy-absorbing device for the vehicle, mounted between the body structure 20 and the exhaust structure 30, with a fixing part 41 fixed to the body structure 20. By installing the aforementioned energy-absorbing device 40 in the vehicle, it is beneficial to improve vehicle driving safety, improve driving comfort, and reduce vehicle maintenance costs.

[0053] The energy-absorbing device 40 for a vehicle according to the embodiments of the present invention, as well as other components and operation of the vehicle, are known to those skilled in the art and will not be described in detail here.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An energy-absorbing device for a vehicle, characterized in that, The vehicle includes a body structure (20) and an exhaust structure (30), the exhaust structure (30) being located below the body structure (20), and an energy-absorbing device (40) for mounting between the body structure (20) and the exhaust structure (30), the energy-absorbing device (40) comprising: The fixing part (41) and the energy-absorbing part (42) are arranged in a vertical direction. The fixing part (41) is located above the energy-absorbing part (42). The fixing part (41) is adapted to be fixed to the vehicle body structure (20). The energy-absorbing part (42) includes a plurality of elastic structures (421). The plurality of elastic structures (421) are sequentially fitted together. The plurality of elastic structures (421) all extend in the vertical direction and are all fixed to the fixing part (41). The plurality of elastic structures (421) are all opposite to the exhaust structure (30) in the vertical direction.

2. The energy-absorbing device for a vehicle according to claim 1, characterized in that, The end of each of the elastic structures (421) facing the fixing part (41) is fixedly connected to the fixing part (41).

3. The energy-absorbing device for a vehicle according to claim 1, characterized in that, At least two of the elastic structures (421) have different lengths along the vertical direction.

4. The energy-absorbing device for a vehicle according to claim 3, characterized in that, In any two adjacent elastic structures (421), the length of the outer elastic structure (421) is greater than the length of the inner elastic structure (421).

5. The energy-absorbing device for a vehicle according to claim 1, characterized in that, Also includes: A limiting plate (43) is fixedly connected to at least one end of the elastic structure (421) away from the fixing part (41), and the limiting plate (43) is adapted to contact the exhaust structure (30).

6. The energy-absorbing device for a vehicle according to claim 5, characterized in that, Each of the elastic structures (421) is fixedly connected to the end opposite to the fixed part (41) with the limiting plate (43), and the limiting plates (43) on two adjacent elastic structures (421) are partially opposite to each other along the vertical direction.

7. The energy-absorbing device for a vehicle according to claim 5, characterized in that, The limiting plate (43) has a ring structure.

8. The energy-absorbing device for a vehicle according to claim 1, characterized in that, The fixing part (41) is formed with a mounting hole, and the energy absorption device (40) is fixed to the vehicle body structure (20) by passing a fastener (50) through the mounting hole.

9. The energy-absorbing device for a vehicle according to any one of claims 1-8, characterized in that, The elastic structure (421) is a spring.

10. A vehicle, characterized in that, include: The vehicle body structure (20) and the exhaust structure (30) are located below the vehicle body structure (20) and spaced apart from the vehicle body structure (20); An energy-absorbing device (40) is an energy-absorbing device (40) for a vehicle according to any one of claims 1-9, wherein the energy-absorbing device (40) is assembled between the vehicle body structure (20) and the exhaust structure (30), and the fixing part (41) is fixed to the vehicle body structure (20).

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