Automobile energy absorption box assembly

Abstract

The utility model discloses an automobile energy absorption box assembly, which relates to the technical field of automobiles and comprises a bumper. Two energy absorption box bodies are symmetrically installed on the inner side wall of the bumper, and energy absorption box bases are fixedly connected to the bottoms of the energy absorption box bodies. The first buffer seat is located at the upper position in the energy absorption box body, the two ends of the first buffer seat are each of a W-shaped elastic structure, and the middle of the first buffer seat is in a hollowed-out state, so that when a vehicle collides in the running process, the first buffer seat firstly absorbs impact generated by collision of the vehicle, and at the moment, the first buffer seat can deform downwards; the two ends of the first buffering seat and the second buffering seat are compressed into rectangles, so that part of impact is absorbed, the two arc-shaped supporting plates are located between the first buffering seat and the second buffering seat, and the weakening grooves are further formed in the outer sides of the middle positions of the two arc-shaped supporting plates, so that when the first buffering seat deforms, the arc-shaped supporting plates can be extruded downwards, and therefore the arc-shaped supporting plates are bent inwards to deform; and the impact generated by vehicle collision is further absorbed.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to an automobile energy absorption box assembly. Background Art

[0002] The materials of energy absorption boxes are mainly low carbon steel and aluminum alloy. Compared with low carbon steel, aluminum alloy can reduce the weight by about half. At the same time, due to its good thermal conductivity, it can ensure that it can quickly transfer energy to the outside in the form of heat energy when absorbing energy, avoiding local overheating and explosion. The energy absorption box of a car is a safety structural component, which is mainly used to absorb and disperse the impact force when the vehicle collides to protect the vehicle occupants and vehicle structure.

[0003] The current energy absorption box structure is mainly composed of cylindrical sheet metal parts with easy crushing and folding characteristics. The energy absorption function is single and the effect is poor. The energy absorption box structure has a pre-deformation design on its box body to improve its energy absorption and deformation characteristics. However, the energy absorption box made of metal sheet metal parts has a high weight and low specific energy absorption, resulting in low efficiency in absorbing impact energy and inability to effectively protect the safety of people or structures.

[0004] Chinese patent document CN104590177B discloses an automotive crash box, including a crash box body made of a carbon fiber composite material, with chamfered edges at the ends. The automotive crash box of this invention achieves a lightweighting effect due to the carbon fiber composite material used for the crash box body. Compared to conventional metal crash boxes, the carbon fiber composite crash box is 52% to 69% lighter and has superior comprehensive impact resistance and energy absorption. However, the following drawbacks still exist during implementation:

[0005] Although the device in the above-mentioned document can use carbon fiber composite materials to achieve a lightweight effect, the device in the above-mentioned document absorbs the collision energy through its own crushing deformation when the vehicle is hit. This single energy absorption box can only control the crushing deformation by designing its own energy-absorbing ribs, cross-sectional shape, etc. In the event of a medium or high-speed collision, the energy absorption is weak and the crushing form is unstable. It cannot provide good protection for either the longitudinal beams of the vehicle body or the occupants, thereby reducing the safety of the vehicle. Utility Model Content

[0006] The purpose of the present invention is to provide an automobile energy absorption box assembly to solve the problem in the background art that the energy absorption box absorbs collision energy by self-compression and deformation, resulting in unstable collapse form.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] The automobile energy absorption box assembly includes a bumper; two energy absorption box bodies are symmetrically installed on the inner wall of the bumper, the bottoms of the energy absorption box bodies are fixedly connected to the energy absorption box base, and multiple crush induction grooves are symmetrically opened on the outer walls of the two energy absorption box bodies; the energy absorption assembly is used to absorb and disperse the impact force during a collision to protect the safety of passengers and the vehicle, and the energy absorption assembly is connected to the energy absorption box body.

[0009] The above-mentioned technical solution is adopted. In this solution, the energy absorption box body arranged at both ends of the bumper is made of carbon fiber composite material, which has better impact resistance and energy absorption effect. The crush induction grooves are distributed on the four side lines of the energy absorption box body, which can guide the energy absorption box body to deform along a predetermined path during a collision, thereby more effectively absorbing energy and reducing damage to other parts of the vehicle in a collision, thereby reducing maintenance costs.

[0010] A further improvement of the technical solution of the present utility model is that the energy absorption component includes a second buffer seat fixedly connected to the bottom of the energy absorption box main body, two arc-shaped support plates are symmetrically installed on the top of the second buffer seat, the tops of the arc-shaped support plates are fixedly connected to the same first buffer seat, and the bottom of the first buffer seat is fixedly connected to a telescopic rod.

[0011] The above technical solution is adopted, in which the first buffer seat is located at an upper position inside the energy absorption box body, with both ends forming a W-shaped elastic structure and the middle being hollow.

[0012] A further improvement of the technical solution of the present utility model is that: the first buffer seat is a W-shaped elastic structure, the arc-shaped support plate is a semi-arc-shaped structure, and a weakening groove is provided in the middle position.

[0013] The above-mentioned technical solution is adopted, in which two arc-shaped support plates are located between the first buffer seat and the second buffer seat, the top of which is connected to the bottom of the first buffer seat, and the bottom is connected to the top of the second buffer seat, and a weakening groove is also provided on the outer side of the middle position of the two arc-shaped support plates.

[0014] A further improvement of the technical solution of the present utility model is that: both sides of the second buffer seat are fixedly connected with supporting side plates, and the second buffer seat and the supporting side plates are an integrated structure.

[0015] The above technical solution is adopted, in which the second buffer seat is rectangular as a whole and is composed of elastic sheets that are staggered and interspersed. The middle of the supporting side panels on both sides is set to a hollow shape. The two are an integrated structure, which can be deformed when the second buffer seat is hit.

[0016] A further improvement of the technical solution of the present invention is that two folding rods are symmetrically installed on the outer side wall of the telescopic rod, the side of the folding rod away from the telescopic rod is connected to the energy absorption box body, and the bottom of the telescopic rod is fixedly connected to a spring.

[0017] The above technical solution is adopted, in which the telescopic rod is composed of two cylindrical round rods, the diameter of the top round rod is smaller than the diameter of the bottom round rod, and the folding rod is composed of two cross rods, one end of which is connected to the top of the telescopic rod and the other end is connected to the energy absorption box body.

[0018] A further improvement of the technical solution of the present utility model is that two exhaust holes are symmetrically opened on the outer wall of the telescopic rod, and a conical tube is fixedly connected to the inner wall of the exhaust hole. The end of the conical tube away from the telescopic rod is fixedly connected to an arc-shaped piece, and the end of the arc-shaped piece close to the exhaust hole is fixedly connected to an exhaust plate.

[0019] The above technical solution is adopted, in which the conical tube and the telescopic rod are an integrated structure, the opening diameters of the conical tube and the arc piece close to one end of the telescopic rod are smaller than the diameter of the other end, and the arc piece is installed at the end with the larger opening of the conical tube.

[0020] A further improvement of the technical solution of the utility model is that the conical tube is conical, and a weakening groove is provided at the connection position between the arc-shaped piece and the conical tube.

[0021] The above technical solution is adopted. In this solution, the air inside the telescopic rod is first accumulated in the conical tube and gradually pushes the exhaust plate, so that the exhaust plate gradually moves to the outside of the conical tube. During this process, part of the air can be discharged from the holes on the surface of the exhaust plate, thereby slowing down the speed of air discharge and thus slowing down the speed of contraction of the telescopic rod.

[0022] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared to the prior art:

[0023] 1. The utility model provides an automobile energy absorption box assembly. The energy absorption box body arranged at both ends of the bumper is made of carbon fiber composite material, which has better impact resistance and energy absorption effect. The crush induction grooves are distributed on the four sides of the energy absorption box body, which can guide the energy absorption box body to deform along a predetermined path during a collision, thereby more effectively absorbing energy and reducing damage to other parts of the vehicle in a collision, thereby reducing maintenance costs.

[0024] 2. The utility model provides an automobile energy absorption box assembly, in which a first buffer seat is arranged at an upper position inside the energy absorption box body, with both ends forming a W-shaped elastic structure and a hollowed-out middle. When a vehicle collides while driving, the first buffer seat first absorbs the impact caused by the vehicle collision. At this time, the first buffer seat can be deformed downward, and both ends are compressed into a rectangle, thereby absorbing part of the impact. Two arc-shaped support plates are located between the first buffer seat and the second buffer seat, and a weakening groove is provided on the outer side of the middle position of the two arc-shaped support plates. Therefore, when the first buffer seat is deformed, the arc-shaped support plate can be squeezed downward to cause it to bend inward, thereby further absorbing the impact caused by the energy collision of the vehicle.

[0025] 3. The utility model provides an automobile energy absorption box assembly, which is an integrated structure of the conical tube and the telescopic rod. When the telescopic rod is compressed and contracted, the round rod on the top moves downward and discharges the air inside the telescopic rod from the exhaust hole. The air inside the telescopic rod is first accumulated in the conical tube and gradually pushes the exhaust plate, so that the exhaust plate gradually moves toward the outside of the conical tube. During this process, part of the air can be discharged from the holes on the surface of the exhaust plate, thereby slowing down the speed of air discharge, thereby slowing down the speed of contraction of the telescopic rod. In conjunction with the first buffer seat, the arc-shaped support plate and the second buffer seat, a three-level energy absorption structure is formed, which has the ability to absorb and disperse the impact of the vehicle in layers, protect the safety of the people in the vehicle, and reduce the degree of damage to the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0028] Figure 2 It is a schematic diagram of the three-dimensional structure of the energy absorption box body in the present utility model;

[0029] Figure 3 This is a schematic diagram of the cross-sectional three-dimensional structure of the energy absorption box body in the present utility model;

[0030] Figure 4 This is a schematic cross-sectional view of the energy absorption box body of the present invention;

[0031] Figure 5 This is a schematic diagram of the coordinated three-dimensional structure of the first buffer seat, the telescopic rod and the second buffer seat in the present invention;

[0032] Figure 6 This is a schematic diagram of the cross-sectional three-dimensional structure of the telescopic rod in the present utility model;

[0033] Figure 7 For this utility model Figure 6 Enlarged view of point A in the middle.

[0034] In the figure: 1. Bumper; 2. Energy absorption box body; 3. Energy absorption box base; 4. Crushing induction groove; 5. First buffer seat; 6. Arc-shaped support plate; 7. Second buffer seat; 8. Telescopic rod; 9. Spring; 10. Folding rod; 11. Support side plate; 12. Exhaust hole; 13. Conical cylinder; 14. Arc-shaped sheet; 15. Exhaust plate. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below with reference to the embodiments:

[0036] Example 1

[0037] like Figure 1 and Figure 2 As shown, the utility model provides an automobile energy absorption box assembly, including a bumper 1; two energy absorption box bodies 2 are symmetrically installed on the inner wall of the bumper 1, the bottoms of the energy absorption box bodies 2 are fixedly connected to energy absorption box bases 3, and multiple crush induction grooves 4 are symmetrically opened on the outer walls of the two energy absorption box bodies 2; the energy absorption assembly is used to absorb and disperse impact force during a collision to protect the safety of passengers and the vehicle, and the energy absorption assembly is connected to the energy absorption box body 2.

[0038] In this embodiment, the energy absorption box body 2 provided at both ends of the bumper 1 is made of carbon fiber composite material, which has better impact resistance and energy absorption effect. The crush induction grooves 4 are distributed on the four side lines of the energy absorption box body 2, which can guide the energy absorption box body 2 to deform along a predetermined path during a collision, thereby more effectively absorbing energy and reducing damage to other parts of the vehicle in a collision, thereby reducing maintenance costs.

[0039] Example 2

[0040] like Figure 3 、 Figure 4 and Figure 5 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the energy absorption component includes a second buffer seat 7 fixedly connected to the bottom of the energy absorption box main body 2, and two arc-shaped support plates 6 are symmetrically installed on the top of the second buffer seat 7. The tops of the arc-shaped support plates 6 are fixedly connected to the same first buffer seat 5, and the bottoms of the first buffer seat 5 are fixedly connected to the telescopic rod 8. The first buffer seat 5 has a W-shaped elastic structure, the arc-shaped support plate 6 is a semi-arc structure, and a weakening groove is provided in the middle position. Both sides of the second buffer seat 7 are fixedly connected to support side plates 11, and the second buffer seat 7 and the support side plates 11 are an integrated structure.

[0041] In this embodiment, when the vehicle is hit by a collision while driving, the energy absorption box can only control the crushing deformation by designing its own energy absorption ribs, cross-sectional shape, etc. In the event of a medium or high-speed collision, the energy absorption is weak and the crushing form is unstable. Neither the longitudinal beams of the vehicle body nor the occupants can be well protected, resulting in a safety hazard in the vehicle driving.

[0042] Specifically, the first buffer seat 5 is located at the upper position inside the energy absorption box body 2, with both ends forming a W-shaped elastic structure and a hollow middle. When the vehicle collides during driving, the first buffer seat 5 first absorbs the impact caused by the vehicle collision. At this time, the first buffer seat 5 can be deformed downward, and both ends are compressed into a rectangle, thereby absorbing part of the impact. It should be noted that the two arc-shaped support plates 6 are located between the first buffer seat 5 and the second buffer seat 7, and the top thereof is connected to the bottom of the first buffer seat 5, and the bottom is connected to the top of the second buffer seat 7. A weakening groove is also provided on the outer side of the middle position of the two arc-shaped support plates 6. Therefore, when the first buffer seat 5 is deformed, the arc-shaped support plate 6 can be squeezed downward to cause it to bend inward, thereby further absorbing the impact caused by the energy vehicle collision.

[0043] Furthermore, the second buffer seat 7 is rectangular as a whole and is composed of elastic sheets that are interlaced and interspersed. The middle of the supporting side panels 11 on both sides is set to be hollow. The two are an integrated structure, which can deform when the second buffer seat 7 is hit, and further absorb the impact generated by the vehicle collision, thereby effectively protecting the safety of the occupants and the vehicle.

[0044] Example 3

[0045] like Figure 3 、 Figure 5 and Figure 6 As shown, based on Example 1, the utility model provides a technical solution: preferably, two folding rods 10 are symmetrically installed on the outer wall of the telescopic rod 8, the side of the folding rod 10 away from the telescopic rod 8 is connected to the energy absorption box body 2, and the bottom of the telescopic rod 8 is fixedly connected with a spring 9.

[0046] In this embodiment, the telescopic rod 8 is composed of two cylindrical round rods, the diameter of the top round rod is smaller than the diameter of the bottom round rod, and the folding rod 10 is composed of two cross rods, one end of which is connected to the top of the telescopic rod 8, and the other end is connected to the energy absorption box body 2. When the telescopic rod 8 is compressed, the top round rod compression spring 9 contracts into the bottom round rod. At this time, the middle position of the folding rod 10 is deformed, cooperating with the contraction of the telescopic rod 8 to absorb the energy generated by the vehicle collision.

[0047] Example 4

[0048] like Figure 5 、 Figure 6 and Figure 7As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, two exhaust holes 12 are symmetrically opened on the outer wall of the telescopic rod 8, and a conical cylinder 13 is fixedly connected to the inner wall of the exhaust hole 12. The end of the conical cylinder 13 away from the telescopic rod 8 is fixedly connected to an arc-shaped piece 14, and the end of the arc-shaped piece 14 close to the exhaust hole 12 is fixedly connected to an exhaust plate 15. The conical cylinder 13 is conical, and a weakening groove is provided at the connection position of the arc-shaped piece 14 and the conical cylinder 13.

[0049] In this embodiment, the conical tube 13 and the telescopic rod 8 are an integrated structure. When the telescopic rod 8 is compressed and contracted, the round rod at the top moves downward and discharges the air inside the telescopic rod 8 from the exhaust hole 12. It should be noted that the opening diameters of the conical tube 13 and the arc-shaped piece 14 near one end of the telescopic rod 8 are smaller than the diameter of the other end. The arc-shaped piece 14 is installed at the end with the larger opening of the conical tube 13. When the round rod at the top of the telescopic rod 8 moves downward, the air inside the telescopic rod 8 is first accumulated in the conical tube 13 and gradually pushes the exhaust plate 15, so that the exhaust plate 15 gradually moves toward the outside of the conical tube 13. In this process, part of the air can be discharged from the holes on the surface of the exhaust plate 15, thereby slowing down the speed of air discharge, thereby slowing down the speed of contraction of the telescopic rod 8, and cooperating with the first buffer seat 5, the arc-shaped support plate 6 and the second buffer seat 7 to form a three-level energy absorption structure, which has the ability to absorb and disperse the impact of the vehicle in layers, protect the safety of the people in the vehicle, and reduce the degree of damage to the vehicle.

[0050] The working principle of the automobile energy absorption box assembly is described in detail below.

[0051] like Figure 1-Figure 7As shown, first, the energy absorption box base 3 is installed on the front end of the vehicle by screws, so that the two energy absorption box bodies 2 are distributed at both ends of the bumper 1. The crush induction grooves 4 are distributed on the four side lines of the energy absorption box body 2, which can guide the energy absorption box body 2 to deform according to a predetermined path during a collision, thereby more effectively absorbing energy and reducing damage to other parts of the vehicle during a collision. The first buffer seat 5 is located at the upper position inside the energy absorption box body 2, with both ends forming a W-shaped elastic structure and a hollow state in the middle. When a collision occurs in the vehicle during driving, the first buffer seat 5 first absorbs the energy generated by the vehicle collision Impact, at this time the first buffer seat 5 can be deformed downward, and both ends are compressed into a rectangle, thereby absorbing part of the impact. It should be noted that the two arc-shaped support plates 6 are located between the first buffer seat 5 and the second buffer seat 7, and the top thereof is connected to the bottom of the first buffer seat 5, and the bottom is connected to the top of the second buffer seat 7. A weakening groove is also provided on the outer side of the middle position of the two arc-shaped support plates 6. Therefore, when the first buffer seat 5 is deformed, the arc-shaped support plate 6 can be squeezed downward to cause it to bend inward, thereby further absorbing the impact caused by the collision of the energy-absorbing vehicle. The second buffer seat 7 is rectangular as a whole. , is composed of elastic sheets that are staggered and interspersed, and the middle of the supporting side plates 11 on both sides is set to a hollow form. The two are an integrated structure, which can deform when the second buffer seat 7 is hit, and further absorb the impact generated by the vehicle collision. The conical tube 13 and the telescopic rod 8 are an integrated structure. When the above-mentioned telescopic rod 8 is compressed and contracted, the round rod at the top moves downward and discharges the air inside the telescopic rod 8 from the exhaust hole 12. It should be noted that the opening diameters of the conical tube 13 and the arc-shaped piece 14 near one end of the telescopic rod 8 are smaller than the diameter of the other end. The arc-shaped piece 14 is installed at the opening of the conical tube 13 At the end with the larger opening, when the round rod at the top of the telescopic rod 8 moves downward, the air inside the telescopic rod 8 first accumulates in the conical tube 13 and gradually pushes the exhaust plate 15, so that the exhaust plate 15 gradually moves to the outside of the conical tube 13. During this process, part of the air can be discharged from the holes on the surface of the exhaust plate 15, thereby slowing down the speed of air discharge, thereby slowing down the speed of contraction of the telescopic rod 8, and cooperating with the above-mentioned first buffer seat 5, arc-shaped support plate 6 and second buffer seat 7 to form a three-level energy absorption structure, which has the ability to absorb and disperse the impact of the vehicle in layers, protect the safety of people in the vehicle, and reduce the degree of damage to the vehicle.

[0052] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An automobile energy absorption box assembly, comprising a bumper (1); characterized in that: Two energy absorption box bodies (2) are symmetrically mounted on the inner side wall of the bumper (1); the bottoms of the energy absorption box bodies (2) are fixedly connected to energy absorption box bases (3); and a plurality of crush induction grooves (4) are symmetrically opened on the outer side walls of the two energy absorption box bodies (2); An energy absorbing component, the energy absorbing component is used to absorb and disperse the impact force during a collision to protect the safety of passengers and the vehicle, and the energy absorbing component is connected to the energy absorbing box body (2); The energy absorbing assembly comprises a second buffer seat (7) fixedly connected to the bottom of the energy absorbing box body (2); two arc-shaped support plates (6) are symmetrically mounted on the top of the second buffer seat (7); the tops of the arc-shaped support plates (6) are both fixedly connected to the same first buffer seat (5); and the bottom of the first buffer seat (5) is fixedly connected to a telescopic rod (8); The first buffer seat (5) is a W-shaped elastic structure, the arc-shaped support plate (6) is a semi-arc-shaped structure, and a weakening groove is provided at the middle position.

2. The automobile crash box assembly according to claim 1, characterized in that: Both sides of the second buffer seat (7) are fixedly connected to support side plates (11), and the second buffer seat (7) and the support side plates (11) are an integrated structure.

3. The automobile crash box assembly according to claim 2, characterized in that: Two folding rods (10) are symmetrically mounted on the outer side wall of the telescopic rod (8); the side of the folding rod (10) away from the telescopic rod (8) is connected to the energy absorption box body (2); and a spring (9) is fixedly connected to the bottom of the telescopic rod (8).

4. The automobile crash box assembly according to claim 3, characterized in that: Two exhaust holes (12) are symmetrically formed on the outer wall of the telescopic rod (8), and a conical cylinder (13) is fixedly connected to the inner wall of each exhaust hole (12). An arc-shaped piece (14) is fixedly connected to one end of the conical cylinder (13) away from the telescopic rod (8), and an exhaust plate (15) is fixedly connected to one end of the arc-shaped piece (14) close to the exhaust hole (12).

5. The automobile crash box assembly according to claim 4, characterized in that: The conical cylinder (13) is conical, and a weakening groove is provided at the connection position between the arc-shaped piece (14) and the conical cylinder (13).

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