Energy absorption box and vehicle

Abstract

The utility model discloses an energy absorption box and a vehicle, relates to the technical field of vehicle structures, and aims to solve the problem that an energy absorption box in the prior art is not stable enough. The embodiment of the utility model provides an energy absorption box. The energy absorption box comprises a light cylinder, a wrinkled cylinder, a first fixing part and a second fixing part. The pleated cylinder is arranged outside the light cylinder, and the cylinder wall of the pleated cylinder is arranged along the periphery of the light cylinder. Or the pleated cylinder is arranged in the smooth cylinder, and the cylinder wall of the pleated cylinder is arranged along the inner circumference of the smooth cylinder. Wherein the wrinkled cylinder can be compressed and deformed along the axial direction of the wrinkled cylinder. The first fixing piece and the second fixing piece are arranged at intervals in the axial direction of the wrinkled cylinder. The light cylinder and the wrinkled cylinder are located between the first fixing piece and the second fixing piece and connected with the first fixing piece and the second fixing piece. The energy absorption box can be used for absorbing collision energy.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle structures, in particular to an energy-absorbing box and a vehicle. Background Art

[0002] The energy-absorbing box is an important passive safety device on automobiles and is usually installed between the chassis and the anti-collision beam. The energy-absorbing box is mostly a thin-walled metal cylinder structure. When subjected to an impact load, it absorbs the impact energy through the plastic deformation of the cylinder wall, plays a buffering role, and thus protects the safety of the important structures of the vehicle body and the passengers in the vehicle. However, the energy-absorbing box in the prior art is not stable enough. Summary of the Utility Model

[0003] This application provides an energy-absorbing box and a vehicle, which are used to solve the problem that the energy-absorbing box in the prior art is not stable enough.

[0004] To achieve the above object, this application adopts the following technical solutions:

[0005] In a first aspect, an embodiment of this application provides an energy-absorbing box, including: a smooth cylinder, a corrugated cylinder, a first fixing member, and a second fixing member. The corrugated cylinder is arranged outside the smooth cylinder, and the cylinder wall of the corrugated cylinder is arranged along the outer circumference of the smooth cylinder. Alternatively, the corrugated cylinder is arranged inside the smooth cylinder, and the cylinder wall of the corrugated cylinder is arranged along the inner circumference of the smooth cylinder. Wherein, the corrugated cylinder can be compressed and deformed along the axial direction of the corrugated cylinder. The first fixing member and the second fixing member are arranged at intervals along the axial direction of the corrugated cylinder. The smooth cylinder and the corrugated cylinder are located between the first fixing member and the second fixing member and are connected to the first fixing member and the second fixing member.

[0006] The energy-absorbing box of this application is provided with a smooth cylinder, which has a high specific energy absorption rate and can absorb a large amount of energy during a collision. The energy-absorbing box of this application is also provided with a corrugated cylinder, which can be compressed and deformed along the axial direction of the corrugated cylinder. In this way, when subjected to an external impact load, the corrugated cylinder can be compressed and deformed along the axial direction of the corrugated cylinder, so that the deformation of the smooth cylinder is also stable and controllable. This application sleevs the smooth cylinder and the corrugated cylinder on each other. In this way, the energy-absorbing box can maintain a high specific energy absorption rate while making the compression deformation of the energy-absorbing box stable and controllable, can make the energy-absorbing box more stable, and improve the safety of the vehicle.

[0007] In some embodiments, the corrugated cylinder includes a plurality of protruding segments and a plurality of concave segments that are alternately arranged and connected in sequence along the axial direction of the corrugated cylinder. In the direction from the first fixing member to the second fixing member, the diameter of the protruding segment first increases and then decreases, and the diameter of the concave segment first decreases and then increases.

[0008] In some embodiments, the cross-sectional shape of the protruding segment in the plane where the axis of the corrugated cylinder is located is Λ-shaped; the cross-sectional shape of the concave segment in the plane where the axis of the corrugated cylinder is located is V-shaped.

[0009] In some embodiments, the cross-sectional shapes of the light tube and the corrugated tube are circular, and the cross-section is perpendicular to the axial direction of the corrugated tube.

[0010] In some embodiments, the light tube and the corrugated tube are metal tubes.

[0011] In some embodiments, the energy absorption box further includes at least one connecting member, the connecting member is disposed between the light tube and the corrugated tube, and is connected to the light tube and the corrugated tube.

[0012] In some embodiments, the number of the connecting members is multiple, and the multiple connecting members are arranged along the circumferential direction of the light.

[0013] In some embodiments, the connecting member is disposed along the radial direction of the light tube.

[0014] In some embodiments, the corrugated tube includes a plurality of tube wall segments arranged along the circumferential direction of the corrugated tube, and one end of the connecting member away from the light tube is located between two adjacent tube wall segments and is connected to the two adjacent tube wall segments.

[0015] In some embodiments, the tube diameters of the light tube and the corrugated tube gradually increase in the direction from the first fixing member to the second fixing member.

[0016] In some embodiments, the corrugated tube is disposed outside the light tube, and the tube wall of the corrugated tube is disposed along the outer circumference of the light tube, and the inside of the light tube is filled with metallic foam. Alternatively, the corrugated tube is disposed inside the light tube, and the tube wall of the corrugated tube is disposed along the inner circumference of the light tube, and the inside of the corrugated tube is filled with metallic foam.

[0017] In a second aspect, an embodiment of the present application provides a vehicle, including a bumper beam, a chassis, and the energy absorption box according to any one of the above, and the energy absorption box is installed between the bumper beam and the chassis.

[0018] For the technical effects brought by any implementation manner of the second aspect above, reference may be made to the technical effects brought by the corresponding implementation manner in the first aspect, which will not be elaborated here. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of an energy absorption box in the prior art;

[0020] Figure 2 It is a schematic structural diagram of a vehicle provided by an embodiment of the present application;

[0021] Figure 3 It is one of the schematic structural diagrams of an energy absorption box provided by an embodiment of the present application;

[0022] Figure 4 It is another schematic structural diagram of an energy absorption box provided by an embodiment of the present application;

[0023] Figure 5The third structural schematic diagram of an energy absorption box provided by an embodiment of the present application;

[0024] Figure 6 It is Figure 5 Partial structural schematic diagram of the energy absorption box in

[0025] Figure 7 It is Figure 5 Explosion structural schematic diagram of the energy absorption box in

[0026] Figure 8 Compression simulation deformation morphology diagram of the energy absorption box provided by an embodiment of the present application;

[0027] Figure 9 Compression displacement and compression load curve graph of the energy absorption box provided by an embodiment of the present application.

[0028] Reference numerals:

[0029] 1. Hollow structure; 2. Connecting plate;

[0030] 100. Vehicle; 10. Vehicle body; 20. Anti-collision beam; 30. Chassis; 40. Energy absorption box; 41. Light cylinder; 42. Corrugated cylinder; 421. Protruding section; 422. Concave section; 423. Cylinder wall section; 43. First fixing member; 44. Second fixing member; 431. Fixing hole; 45. Connecting member;

[0031] F1. Axial direction of the corrugated cylinder. Detailed implementation manners

[0032] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0034] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0035] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. In addition, when describing pipelines or channels, the terms "connection" and "coupling" used in this application have the meaning of conducting. The specific meaning needs to be understood in combination with the context.

[0036] In the embodiments of the present application, words such as "exemplarily" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplarily" or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplarily" or "for example" is intended to present relevant concepts in a specific manner.

[0037] The crash safety performance is one of the main contents of the body structure safety design. The main purpose is to reduce the degree of injury to the occupants caused by a collision, which requires that the body structure must have the ability to absorb energy and resist deformation. That is, when a vehicle collides, the collision energy must be absorbed by specific parts of the body structure, and the acceleration of the vehicle impact should be reduced as much as possible. The energy absorption box is an important component for absorbing the collision energy of an automobile. For the frontal collision of a load-bearing body, the bumper beam and the energy absorption box can absorb about 10% of the energy. The design of the energy absorption box mainly considers making it have appropriate stiffness to achieve the stiffness coordination of each component. If the stiffness of the energy absorption box is large, less energy is absorbed. When the vehicle is subjected to an instantaneous impact, it decelerates quickly, resulting in an increase in the deceleration response of the occupants and easily reaching the deceleration injury limit that the human body can withstand. If the stiffness of the energy absorption box is small, less energy is absorbed during the collision process, increasing the deformation of the occupant compartment and thus reducing the survival space of the occupants, endangering the personal safety of the occupants.

[0038] In the prior art, see Figure 1 , Figure 1 is a schematic structural view of an energy absorption box in the prior art. The outer shape of the energy absorption box is a regular hexagonal frustum structure, which is formed by nesting two hollow structures 1 in the shape of regular hexagonal frustums with the same shape but different sizes. The corresponding side surfaces of the two hollow structures 1 are parallel to each other, and the two hollow structures 1 are connected by a connecting plate 2 between the spaced side surfaces. The length of the connecting plate 2 is the same as the height of the hollow structure 1, and the connecting plate 2 is perpendicular to the side surface of the hollow structure 1.

[0039] However, the disadvantage of this energy-absorbing box structure is that since both the inner and outer cylinders are straight cylinders, when a collision occurs, the deformation mode of this structure is uncontrollable, the energy-absorbing box is unstable, and it is not conducive to protecting the vehicle occupants.

[0040] Based on this, the present application provides a vehicle 100, including a front bumper beam 20, a chassis 30, and an energy-absorbing box 40, and the energy-absorbing box 40 is installed between the front bumper beam 20 and the chassis 30.

[0041] See Figure 2 , Figure 2 which is a schematic structural diagram of a vehicle provided by an embodiment of the present application. Figure 2 Taking the front bumper beam 20 as an example for illustration. The chassis 30 is installed at the bottom of the vehicle body 10 and can support and bear the weight of the entire vehicle 100 or machine. The front bumper beam 20 can be installed at the front and rear of the vehicle body 10, which can ensure that the chassis 30 is not severely damaged under low-speed impacts, thereby ensuring the safety of the vehicle occupants and the main structure of the vehicle 100 itself. The energy-absorbing box 40 is installed between the front bumper beam 20 and the chassis 30 and is the main energy-absorbing component.

[0042] In some embodiments, multiple energy-absorbing boxes 40 can be provided, which are respectively arranged between the front bumper beam 20 and the chassis 30 and between the rear bumper beam 20 and the chassis 30. In this way, when an impact occurs, the kinetic energy generated by the impact can be absorbed as much as possible and irreversibly converted into the plastic deformation energy of the material.

[0043] Specifically, see Figure 3 , Figure 3 which is one of the schematic structural diagrams of an energy-absorbing box provided by an embodiment of the present application. The energy-absorbing box 40 includes a smooth cylinder 41 and a corrugated cylinder 42. The corrugated cylinder 42 is arranged outside the smooth cylinder 41, and the cylinder wall of the corrugated cylinder 42 is arranged along the outer circumference of the smooth cylinder 41.

[0044] In some other embodiments, the corrugated cylinder 42 is arranged inside the smooth cylinder 41, and the cylinder wall of the corrugated cylinder 42 is arranged along the inner circumference of the smooth cylinder 41. Among them, the corrugated cylinder 42 can be compressed and deformed along the axial direction F1 of the corrugated cylinder 42.

[0045] In this way, the energy-absorbing box 40 is provided with a smooth cylinder 41, and the smooth cylinder 41 has a high specific energy absorption rate and can absorb a large amount of energy when a collision occurs. The energy-absorbing box 40 is also provided with a corrugated cylinder 42, and the corrugated cylinder 42 can be compressed and deformed along the axial direction F1 of the corrugated cylinder 42. In this way, when subjected to an external impact load, the corrugated cylinder 42 can be compressed and deformed along the axial direction F1 of the corrugated cylinder 42, and further the deformation of the smooth cylinder 41 is also stable and controllable.

[0046] In addition, in the present application, the light tube 41 and the corrugated tube 42 are sleeved with each other. In this way, the energy absorption box 40 can maintain a high specific energy absorption rate while enabling the compression deformation of the energy absorption box 40 to be stable and controllable, making the energy absorption box 40 more stable and improving the safety of the vehicle 100.

[0047] Exemplarily, the present application takes the case where the corrugated tube 42 is arranged outside the light tube 41 as an example for illustration.

[0048] In some embodiments, the energy absorption box 40 includes a first fixing member 43 and a second fixing member 44. The first fixing member 43 and the second fixing member 44 are arranged at intervals along the axial direction F1 of the corrugated tube 42. The light tube 41 and the corrugated tube 42 are located between the first fixing member 43 and the second fixing member 44 and are connected to the first fixing member 43 and the second fixing member 44.

[0049] In this way, the energy absorption box 40 is respectively connected to the chassis 30 and the anti-collision beam 20 through the first fixing member 43 and the second fixing member 44, enabling the connection of the energy absorption box 40 to be more stable.

[0050] Exemplarily, fixing holes 431 are provided on the first fixing member 43 and the second fixing member 44, and they can be connected to the chassis 30 and the anti-collision beam 20 through screws, bolts, etc.

[0051] In some embodiments, referring to Figure 3 , the corrugated tube 42 includes a plurality of protruding segments 421 and a plurality of recessed segments 422 that are alternately arranged and connected in sequence along the axial direction F1 of the corrugated tube 42. In the direction from the first fixing member 43 to the second fixing member 44, the diameter of the protruding segment 421 first increases and then decreases, and the diameter of the recessed segment 422 first decreases and then increases.

[0052] In this way, including a plurality of protruding segments 421 and a plurality of recessed segments 422 that are alternately arranged and connected in sequence along the axial direction F1 of the corrugated tube 42 can enable the corrugated tube 42 to form a preset compression trajectory. When impacted by an external load, the corrugated tube 42 can undergo better compression deformation.

[0053] In some other embodiments, referring to Figure 4 , Figure 4 which is the second structural schematic diagram of an energy absorption box provided by an embodiment of the present application, the plurality of protruding segments 421 and the plurality of recessed segments 422 of the corrugated tube 42 can also be arranged at intervals.

[0054] In some embodiments, the cross-sectional shape of the protruding segment 421 in the plane where the axis of the corrugated tube 42 is located is Λ-shaped. The cross-sectional shape of the recessed segment 422 in the plane where the axis of the corrugated tube 42 is located is V-shaped.

[0055] In this way, it is more convenient for deformation that the cross-sectional shape of the protruding section 421 in the plane where the axis of the corrugated cylinder 42 is located is Λ-shaped, and the cross-sectional shape of the concave section 422 in the plane where the axis of the corrugated cylinder 42 is located is V-shaped.

[0056] It should be noted that the angles of the protruding section 421 and the concave section 422 can be adjusted according to the actual situation, and the present application does not limit this.

[0057] In some other embodiments, the cross-sectional shapes of the protruding section 421 and the concave section 422 in the plane where the axis of the corrugated cylinder 42 is located can be wavy.

[0058] In some embodiments, continue to refer to Figure 3 , the cross-sectional shapes of the light cylinder 41 and the corrugated cylinder 42 are circular, and the cross-section is perpendicular to the axial direction F1 of the corrugated cylinder 42.

[0059] In this way, setting the cross-sectional shapes of the light cylinder 41 and the corrugated cylinder 42 to be circular can ensure uniform dispersion of energy absorption, and can more reliably protect the chassis 30 from damage. At the same time, setting the cross-sectional shapes of the light cylinder 41 and the corrugated cylinder 42 to be circular has better structural stability and can better resist external pressure or impact.

[0060] In some other embodiments, the cross-sectional shapes of the light cylinder 41 and the corrugated cylinder 42 can be square.

[0061] In some embodiments, the light cylinder 41 and the corrugated cylinder 42 are metal cylinders.

[0062] In this way, setting the light cylinder 41 and the corrugated cylinder 42 as metal cylinders can have high strength and durability, can provide lasting energy absorption performance, and ensure long-term protection. In addition, the metal cylinder structure is simple and is easier to clean and maintain.

[0063] In some embodiments, refer to Figure 5 and Figure 6 , Figure 5 is the third structural schematic diagram of an energy absorption box provided by an embodiment of the present application, Figure 6 is Figure 5 a partial structural schematic diagram of the energy absorption box in

[0064] It should be noted that the corrugated cylinder 42 usually has relatively good load stability, but the specific energy absorption rate of the corrugated cylinder 42 is usually much smaller than that of the light cylinder 41. This is because when the cylinder diameters are the same, the corrugated cylinder 42 is usually heavier than the light cylinder 41. On the other hand, due to the initial bending of the cylinder wall, the bearing capacity of the corrugated cylinder 42 is much smaller than that of the light cylinder 41.

[0065] In this way, by adding the connecting member 45, the resistance of the corrugated cylinder 42 during bending deformation can be increased, thereby improving the energy absorption capacity of the energy absorption box 40.

[0066] Exemplarily, the number of the connecting members 45 can be one or multiple.

[0067] In some embodiments, the number of the connecting members 45 is multiple, and the multiple connecting members 45 are arranged circumferentially along the light cylinder 41.

[0068] In this way, by arranging the connecting members 45 circumferentially along the light cylinder 41, it can be ensured that the pressure received by the connecting members 45 is evenly distributed, reducing the situation of local force concentration, thereby improving the stability and reliability of the connecting members 45.

[0069] It should be noted that the multiple connecting members 45 can be arranged evenly or unevenly circumferentially along the light cylinder 41. The present application does not limit this, and it is specifically set according to actual needs.

[0070] In some embodiments, continue to refer to Figure 6 , the connecting member 45 is arranged radially along the light cylinder 41.

[0071] In this way, arranging the connecting member 45 radially along the light cylinder 41 can increase the support points of the structure, improve the stability of the energy absorption box 40 and the strength of the overall structure, can increase the load-bearing capacity of the structure, and ensure the reliability and safety of the connection.

[0072] In some other embodiments, the connecting member 45 can also form a certain angle with the radial direction of the light cylinder 41.

[0073] In some embodiments, refer to Figure 7 , Figure 7 For Figure 5 is a schematic diagram of the explosion structure of the energy absorption box in , the corrugated cylinder 42 includes a plurality of cylinder wall segments 423 arranged circumferentially along the corrugated cylinder 42, and one end of the connecting member 45 away from the light cylinder 41 is located between two adjacent cylinder wall segments 423 and is connected to the two adjacent cylinder wall segments 423.

[0074] In this way, on the one hand, the overall stability of the energy absorption structure of the energy absorption box 40 can be improved, and on the other hand, when subjected to external force impact, since the deformations of the light cylinder 41, the corrugated cylinder 42 and the connecting member 45 are inconsistent, the three can support each other to increase the total energy absorption, making the structure of the energy absorption box 40 more stable.

[0075] In some embodiments, the cylinder diameters of the light cylinder 41 and the corrugated cylinder 42 gradually increase in the direction from the first fixing member 43 to the second fixing member 44.

[0076] In this way, as the diameter of the cylinder gradually increases, the energy absorption box 40 can provide a larger deformation space when subjected to impact or extrusion, increasing the energy absorption capacity and reducing the impact of the impact energy on the chassis 30. Additionally, the design of the cylinder diameter from small to large can better adapt to the changes in force and pressure in different scenarios, ensuring that the structure has good performance under various conditions.

[0077] It should be noted that the side with a smaller diameter of the smooth cylinder 41 and the corrugated cylinder 42 is connected to the anti-collision beam 20.

[0078] In some embodiments, the corrugated cylinder 42 is disposed outside the smooth cylinder 41, and the cylinder wall of the corrugated cylinder 42 is arranged along the outer circumference of the smooth cylinder 41, and the inside of the smooth cylinder 41 is filled with metallic foam. Alternatively, the corrugated cylinder 42 is disposed inside the smooth cylinder 41, and the cylinder wall of the corrugated cylinder 42 is arranged along the inner circumference of the smooth cylinder 41, and the inside of the corrugated cylinder 42 is filled with metallic foam.

[0079] In this way, by filling with metallic foam, the energy absorption capacity of the energy absorption box 40 can be further improved.

[0080] Exemplarily, the metallic foam can be aluminum foam.

[0081] Exemplarily, the present application gives the simulation analysis results of an example. In this example, the thickness of the corrugated cylinder 42 of the energy absorption box 40 is 2.8 mm, the length of the bottom side of the triangle formed by each adjacent corrugation (along the axial direction of the cylinder) is 18.8 mm, the height is 6.5 mm, and the height of the corrugated cylinder 42 is 207 mm. The thicknesses of the smooth cylinder 41 and the connecting member 45 are both 1.2 mm, and 14 connecting members 45 are evenly arranged.

[0082] See Figure 8 and Figure 9 , Figure 8 is the simulation deformation morphology diagram of the energy absorption box provided by the embodiment of the present application, Figure 9 is the compression displacement and compression load curve diagram of the energy absorption box provided by the embodiment of the present application. It can be seen from Figure 8 that after being compressed, such a structure forms layer upon layer of circular corrugations, and each layer of corrugation corresponds to a fold angle of the crease shell, and the deformation morphology is stable and controllable. It can be seen from Figure 9 that the reaction force generated by this energy absorption structure is extremely stable in the plateau stage, and has a long load plateau stage, showing good energy absorption characteristics.

[0083] Although the present application has been described in connection with various embodiments, it will be understood by those skilled in the art that other variations of the disclosed embodiments can be understood and effected while practicing the claimed application by referring to the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality. A single processor or other unit may implement several functions recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not indicate that these measures cannot be combined to produce favorable results.

[0084] Although the present application has been described in connection with specific features and their embodiments, it will be apparent that various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely exemplary illustrations of the application as defined by the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of the application. It is obvious that those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

[0085] The above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily conceive of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. An energy absorption box, characterized in that: include: A smooth cylinder (41) and a pleated cylinder (42), wherein the pleated cylinder (42) is arranged outside the smooth cylinder (41), and the cylinder wall of the pleated cylinder (42) is arranged along the outer periphery of the smooth cylinder (41); or, the pleated cylinder (42) is arranged inside the smooth cylinder (41), and the cylinder wall of the pleated cylinder (42) is arranged along the inner periphery of the smooth cylinder (41); wherein the pleated cylinder (42) can be compressed and deformed along the axial direction (F1) of the pleated cylinder (42); A first fixing member (43) and a second fixing member (44), wherein the first fixing member (43) and the second fixing member (44) are spaced apart along the axial direction (F1) of the pleated cylinder (42); the light cylinder (41) and the pleated cylinder (42) are located between the first fixing member (43) and the second fixing member (44), and are connected to the first fixing member (43) and the second fixing member (44).

2. The energy absorption box according to claim 1, characterized in that: The pleated cylinder (42) comprises a plurality of protruding sections (421) and a plurality of recessed sections (422) which are alternately arranged and connected in sequence along the axial direction (F1) of the pleated cylinder (42); In the direction from the first fixing member (43) to the second fixing member (44), the diameter of the protruding section (421) first increases and then decreases, and the diameter of the recessed section (422) first decreases and then increases.

3. The energy absorption box according to claim 2, characterized in that: The cross-sectional shape of the protruding section (421) in the plane where the axis of the pleated cylinder (42) is located is Λ-shaped; the cross-sectional shape of the concave section (422) in the plane where the axis of the pleated cylinder (42) is located is V-shaped.

4. The energy absorption box according to claim 1, characterized in that: The cross-sectional shapes of the smooth cylinder (41) and the pleated cylinder (42) are circular, and the cross-sectional shapes are perpendicular to the axial direction (F1) of the pleated cylinder (42).

5. The energy absorption box according to claim 1, characterized in that: The smooth cylinder (41) and the pleated cylinder (42) are metal cylinders.

6. The energy absorption box according to any one of claims 1 to 5, characterized in that: Also includes: At least one connecting member (45), the connecting member (45) is arranged between the pleated cylinder (42) and the light cylinder (41), and is connected to the pleated cylinder (42) and the light cylinder (41).

7. The energy absorption box according to claim 6, characterized in that: The number of the connecting members (45) is plural, and the connecting members (45) are arranged along the circumferential direction of the light cylinder (41).

8. The energy absorption box according to claim 6, characterized in that: The connecting member (45) is arranged along the radial direction of the light cylinder (41).

9. The energy absorption box according to claim 7, characterized in that: The pleated cylinder (42) comprises a plurality of cylinder wall segments (423) arranged along the circumference of the pleated cylinder (42), and one end of the connecting member (45) away from the smooth cylinder (41) is located between two adjacent cylinder wall segments (423) and is connected to the two adjacent cylinder wall segments (423).

10. The energy absorption box according to claim 1, characterized in that: The diameters of the smooth cylinder (41) and the pleated cylinder (42) gradually increase along a direction from the first fixing member (43) to the second fixing member (44).

11. The energy absorption box according to claim 1, characterized in that: The pleated cylinder (42) is arranged outside the smooth cylinder (41), and the cylinder wall of the pleated cylinder (42) is arranged along the outer circumference of the smooth cylinder (41), and the interior of the smooth cylinder (41) is filled with foam metal; Alternatively, the pleated cylinder (42) is arranged inside the smooth cylinder (41), and the cylinder wall of the pleated cylinder (42) is arranged along the inner circumference of the smooth cylinder (41), and the interior of the pleated cylinder (42) is filled with foam metal.

12. A vehicle, characterized in that: It comprises an anti-collision beam (20), a chassis (30) and an energy absorption box (40) according to any one of claims 1 to 11, wherein the energy absorption box (40) is installed between the anti-collision beam (20) and the chassis (30).

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