Energy absorption device, crash beam assembly and vehicle

Abstract

The present disclosure relates to an energy-absorbing device, a crash beam assembly and a vehicle. The energy-absorbing device comprises a first sleeve and a second sleeve, the second sleeve is coaxially sleeved outside the first sleeve and is in sliding connection with the first sleeve, a first chamber and a second chamber are formed between the first sleeve and the second sleeve and are in communication with each other, and the first chamber and the second chamber are filled with damping liquid; and an elastic member extends in the same direction as the axial direction of the first sleeve. In the present disclosure, when the energy-absorbing device is impacted, the first sleeve and the second sleeve move towards each other, extruding the damping liquid, making the damping liquid flow between the first chamber and the second chamber, generating damping force, and absorbing energy. The elastic member is arranged between the first sleeve and the second sleeve, and the elastic member is compressed and deformed to jointly absorb the impact force caused by the collision. The present disclosure absorbs the impact caused by the collision through the damping liquid and the elastic member, effectively absorbs the impact caused by the collision, and reduces the damage to the crash beam and the longitudinal beam.

Description

Technical Field

[0001] This disclosure relates to the field of energy-absorbing structure technology, specifically to an energy-absorbing device, a crash beam assembly, and a vehicle. Background Technology

[0002] The energy-absorbing devices in related technologies are mainly made of steel and are generally in the form of a square box. Energy-absorbing grooves and other structures are set on the square box structure for energy absorption. Due to the poor flexibility of metal, the energy-absorbing box has a poor energy absorption effect and cannot effectively absorb the impact generated by the collision. The collision causes great damage to the anti-collision beams and longitudinal beams. Utility Model Content

[0003] The purpose of this disclosure is to provide an energy-absorbing device, a crash beam assembly, and a vehicle that can solve the aforementioned technical problems.

[0004] To achieve the above objectives, this disclosure provides an energy-absorbing device, comprising: a first sleeve and a second sleeve, the second sleeve being coaxially sleeved on the outside of the first sleeve and slidably connected to the first sleeve, a first chamber and a second chamber being formed between the first sleeve and the second sleeve, and damping fluid being filled in the first chamber and the second chamber, wherein the damping fluid flows between the first chamber and the second chamber when the first sleeve and the second sleeve move relative to each other; and an elastic member extending in the same direction as the axial direction of the first sleeve, wherein one end of the first sleeve located inside the second sleeve is provided with an opening, one end of the elastic member extending into the first sleeve through the opening, and the other end abutting against the inner wall of the second sleeve.

[0005] Optionally, the first sleeve includes a first cylindrical body and an outer extension, and the second sleeve includes a second cylindrical body and an inner extension. The outer extension is circumferentially disposed on the outer side of the end of the first cylindrical body located inside the second sleeve and contacts the inner wall of the second cylindrical body. The inner extension is circumferentially disposed on the inner side of the end of the second cylindrical body near the first sleeve and contacts the outer wall of the first cylindrical body. The outer extension, the inner extension, the outer wall of the first cylindrical body, and the inner wall of the second cylindrical body together form the first chamber.

[0006] Optionally, the outer extension, the inner wall of the first cylinder, and the inner wall of the second cylinder together form the second chamber.

[0007] Optionally, the energy absorption device further includes an overflow valve, which is circumferentially sleeved on the extension portion and located between the extension portion and the second cylinder.

[0008] Optionally, the overflow valve is constructed as an annular plate, and the annular plate is provided with an overflow hole.

[0009] Optionally, the overflow valve is made of a flexible material.

[0010] Optionally, a sealing device is provided between the inner extension and the outer wall of the first cylinder.

[0011] Optionally, the energy absorption device further includes a first connecting portion and a second connecting portion, wherein the first connecting portion is disposed at the end of the first sleeve located outside the second sleeve, and the second connecting portion is disposed at the end of the second sleeve away from the first sleeve.

[0012] A second object of this disclosure is to provide a crash beam assembly, comprising: a crash beam body; and the aforementioned energy-absorbing device, wherein the crash beam body is connected to the longitudinal beam of a vehicle via the energy-absorbing device.

[0013] A third object of this disclosure is to provide a vehicle including the energy-absorbing device described above, and / or including the anti-collision beam assembly described above.

[0014] With the above technical solution, when the energy-absorbing device is impacted, the first sleeve and the second sleeve move towards each other, squeezing the damping fluid and causing it to flow between the first and second chambers, generating damping force and absorbing energy. An elastic element is provided between the first sleeve and the second sleeve to provide support and reset. The elastic element extends into the first sleeve, which can reduce the length of the energy-absorbing device and thus reduce the space occupied. At the same time, the elastic element is compressed and deformed to jointly absorb the impact force brought by the collision. After the collision, the first sleeve and the second sleeve return to their initial state by restoring the length of the elastic element. This disclosure uses damping fluid and elastic elements for flexible energy absorption, which can effectively absorb the impact generated by the collision while reducing damage to the anti-collision beam and longitudinal beam.

[0015] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a cross-sectional view of the energy-absorbing device in this disclosure; Figure 2 This is a schematic diagram of the overflow valve in this disclosure; Figure 3 This is a schematic diagram of the installation of the anti-collision beam assembly in this disclosure.

[0017] Explanation of reference numerals in the attached figures 1. Elastic element; 2. First sleeve; 21. First cylinder; 22. Outer extension; 3. Second sleeve; 31. Second cylinder; 32. Inner extension; 4. Second connecting part; 5. First connecting part; 6. Sealing device; 7. Overflow valve; 71. Overflow hole; 8. First chamber; 9. Second chamber; 10. Anti-collision beam body; 11. Longitudinal beam; 100. Energy absorption device. Detailed Implementation

[0018] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0019] In this disclosure, unless otherwise stated, directional terms such as "inner" and "outer" refer to the inner and outer contours of the component or structure itself. Furthermore, it should be noted that terms such as "first" and "second" are used to distinguish one element from another and do not indicate sequence or importance. Additionally, in the description with reference to the accompanying drawings, the same reference numerals in different drawings denote the same element.

[0020] like Figure 1-2 As shown, this disclosure provides an energy absorption device, including: a first sleeve 2 and a second sleeve 3, the second sleeve 3 being coaxially sleeved on the outside of the first sleeve 2 and slidably connected to the first sleeve 2, a first chamber 8 and a second chamber 9 being formed between the first sleeve 2 and the second sleeve 3, and the first chamber 8 and the second chamber 9 being filled with damping fluid, the damping fluid flowing between the first chamber 8 and the second chamber 9 when the first sleeve 2 and the second sleeve 3 move relative to each other; an elastic member 1 extending in the same direction as the axial direction of the first sleeve 2, one end of the first sleeve 2 located inside the second sleeve 3 having an opening, one end of the elastic member 1 extending into the first sleeve 2 through the opening, and the other end abutting against the inner wall of the second sleeve 3.

[0021] Through the above technical solution, when the energy-absorbing device 100 is impacted, the first sleeve 2 and the second sleeve 3 move towards each other, squeezing the damping fluid and causing it to flow between the first chamber 8 and the second chamber 9, generating damping force and absorbing energy. An elastic element 1 is provided between the first sleeve 2 and the second sleeve 3 to provide support and reset. The elastic element 1 extends into the first sleeve 2, which can reduce the length of the energy-absorbing device 100, thereby reducing the space occupied. At the same time, the elastic element 1 is compressed and deformed to jointly absorb the impact force brought by the collision. After the collision, the first sleeve 2 and the second sleeve 3 return to their initial state by restoring the length of the elastic element 1. This disclosure uses damping fluid and elastic element 1 to perform flexible energy absorption, effectively absorbing the impact generated by the collision while also reducing damage to the anti-collision beam and the longitudinal beam 11.

[0022] As an optional implementation method, such as Figure 1 As shown, the first sleeve 2 includes a first cylindrical body 21 and an outer extension 22, and the second sleeve 3 includes a second cylindrical body 31 and an inner extension 32. The outer extension 22 is circumferentially disposed on the outer side of the end of the first cylindrical body 21 located inside the second sleeve 3 and contacts the inner wall of the second cylindrical body 31. The inner extension 32 is circumferentially disposed on the inner side of the end of the second cylindrical body 31 near the first sleeve 2 and contacts the outer wall of the first cylindrical body 21. The outer extension 22, the inner extension 32, the outer wall of the first cylindrical body 21, and the inner wall of the second cylindrical body 31 together form a first chamber 8. The first cylindrical body 21 contacts the second cylindrical body 31 through the outer extension 22, and the second cylindrical body 31 contacts the first cylindrical body 21 through the inner extension 32, so that there is a gap between the first cylindrical body 21 and the second cylindrical body 31, forming the first chamber 8.

[0023] Optionally, such as Figure 1 As shown, the extension 22, the inner wall of the first cylinder 21, and the inner wall of the second cylinder 31 together form a second chamber 9. The second chamber 9 is separated from the first chamber 8 so that the damping fluid can flow between the first chamber 8 and the second chamber 9 to form a damping force. When the energy absorption device 100 is impacted, the first sleeve 2 and the second sleeve 3 move toward each other, the volume of the second chamber 9 decreases, the volume of the first chamber 8 increases, and the damping fluid flows from the second chamber 9 into the first chamber 8 to generate a damping force to absorb the energy generated by the collision.

[0024] As an optional implementation method, such as Figure 1 As shown, the energy absorption device 100 also includes an overflow valve 7, which is circumferentially sleeved on the extension portion 22 and located between the extension portion 22 and the second cylinder 31. The overflow valve 7 can reduce the flow rate of the damping fluid and generate damping force. The damping force can be adjusted by adjusting the damping parameters of the overflow valve 7 to meet the needs of different vehicles.

[0025] Optionally, such as Figure 2 As shown, the overflow valve 7 can be any suitable structure. For example, in this disclosure, the overflow valve 7 is constructed as an annular plate, and multiple annular plates can be provided. The annular plate is provided with an overflow hole 71, through which the damping fluid flows between the first chamber 8 and the second chamber 9.

[0026] Optionally, the overflow valve 7 is made of a flexible material, such as rubber, so that the overflow valve 7 can also serve as a seal, allowing the damping fluid to flow only through the overflow valve 7, thus making the damping force controllable.

[0027] Optionally, such as Figure 1 As shown, a sealing device 6 is provided between the inner extension 32 and the outer wall of the first cylinder 21. For example, the sealing device 6 is an oil seal. The oil seal is arranged circumferentially between the inner extension 32 and the outer wall of the first cylinder 21 to prevent the damping fluid from leaking from the first chamber 8.

[0028] As an optional implementation method, such as Figure 1 As shown, the energy absorption device 100 also includes a first connecting part 5 and a second connecting part 4. The first connecting part 5 is disposed at one end of the first sleeve 2 located outside the second sleeve 3, and the second connecting part 4 is disposed at one end of the second sleeve 3 away from the first sleeve 2. Both the first connecting part 5 and the second connecting part 4 are constructed as connecting plates for connecting with the device to be used. The outer ring of the connecting plate protrudes from the outer wall of the first sleeve 2 and the second sleeve 3 for easy connection. The connecting plate can also be part of the first sleeve 2 and the second sleeve 3, serving as a baffle at the end of the first sleeve 2 and the second sleeve 3, thereby saving materials.

[0029] like Figure 3 As shown, the second objective of this disclosure is to provide a crash beam assembly, including: a crash beam body 10; and the aforementioned energy absorption device 100. The crash beam body 10 is connected to the longitudinal beam 11 of the vehicle via the energy absorption device 100. When the vehicle collides, the crash beam body 10 is subjected to the impact force and transmits the force to the energy absorption structure to absorb the collision energy.

[0030] A third objective of this disclosure is to provide a vehicle that includes the aforementioned energy-absorbing device 100 and / or the aforementioned anti-collision beam assembly. Specifically, the energy-absorbing device 100 can be disposed between the anti-collision beam body 10 and the longitudinal beam 11, or it can be disposed at other locations requiring energy absorption. The vehicle of this disclosure may include only the anti-collision beam assembly, only the energy-absorbing device 100, or both the anti-collision beam assembly and the energy-absorbing device 100. This disclosure utilizes damping fluid and elastic element 1 for flexible energy absorption, effectively absorbing the impact of a collision while reducing damage to the anti-collision beam and the longitudinal beam 11.

[0031] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0032] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0033] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. An energy-absorbing device, characterized in that, include: A first sleeve and a second sleeve, the second sleeve being coaxially sleeved on the outside of the first sleeve and slidably connected to the first sleeve, a first chamber and a second chamber being formed between the first sleeve and the second sleeve, and damping fluid being filled in the first chamber and the second chamber; when the first sleeve and the second sleeve move relative to each other, the damping fluid flows between the first chamber and the second chamber. An elastic element extends in the same direction as the first sleeve along its axial direction. One end of the first sleeve, located inside the second sleeve, has an opening. One end of the elastic element extends into the first sleeve through the opening, and the other end abuts against the inner wall of the second sleeve.

2. The energy-absorbing device according to claim 1, characterized in that, The first sleeve includes a first cylindrical body and an outer extension, and the second sleeve includes a second cylindrical body and an inner extension. The outer extension is circumferentially disposed on the outer side of the end of the first cylindrical body located inside the second sleeve and contacts the inner wall of the second cylindrical body. The inner extension is circumferentially disposed on the inner side of the end of the second cylindrical body near the first sleeve and contacts the outer wall of the first cylindrical body. The outer extension, the inner extension, the outer wall of the first cylindrical body, and the inner wall of the second cylindrical body together form the first chamber.

3. The energy-absorbing device according to claim 2, characterized in that, The outer extension, the inner wall of the first cylinder, and the inner wall of the second cylinder together form the second chamber.

4. The energy-absorbing device according to claim 3, characterized in that, The energy absorption device also includes an overflow valve, which is circumferentially sleeved on the extension portion and located between the extension portion and the second cylinder.

5. The energy-absorbing device according to claim 4, characterized in that, The overflow valve is constructed as an annular plate, and the annular plate is provided with an overflow hole.

6. The energy-absorbing device according to claim 5, characterized in that, The overflow valve is made of a flexible material.

7. The energy-absorbing device according to claim 2, characterized in that, A sealing device is provided between the inner extension and the outer wall of the first cylinder.

8. The energy-absorbing device according to claim 1, characterized in that, The energy absorption device further includes a first connecting part and a second connecting part. The first connecting part is located at the end of the first sleeve outside the second sleeve, and the second connecting part is located at the end of the second sleeve away from the first sleeve.

9. A crash beam assembly, characterized in that, include: The anti-collision beam itself; as well as The energy-absorbing device according to any one of claims 1-8, wherein the anti-collision beam body is used to connect to the longitudinal beam of the vehicle via the energy-absorbing device.

10. A vehicle, characterized in that, Includes the energy-absorbing device according to any one of claims 1-8, and / or includes the anti-collision beam assembly according to claim 9.

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