Automobile aluminum rear anti-collision beam structure and automobile

Abstract

The application relates to an automobile aluminum rear anti-collision beam structure and an automobile, and belongs to the technical field of automobiles. The current rear anti-collision beam structure is improved. The rear anti-collision beam body is made of aluminum material and is arranged in an arc shape. Energy absorbing components are arranged at the two ends of the rear anti-collision beam body. The cross section of the rear anti-collision beam body is in a sun-shaped structure and comprises an upper part and a lower part. Along the direction from top to bottom, the upper part of the rear anti-collision beam body is arranged in an equal width mode, the width of the lower part gradually increases, and the inner sides of the upper part and the lower part are flush. The rear anti-collision beam is light in weight, the rear part of the vehicle is small in deformation in a low-speed collision, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobiles, in particular to an automobile aluminum rear anti-collision beam structure and automobile. BACKGROUND

[0002] The statements herein merely provide background technology related to the present application, and do not necessarily constitute prior art.

[0003] Automobile collision is a mandatory legal requirement, and rear collision must meet the corresponding requirements. At present, the rear anti-collision beam of most automobiles is made of steel or aluminum material, and the rear anti-collision beam body is of equal cross section, i.e. the cross section width of the anti-collision beam body along the vertical direction is equal. For example, patent CN216401366U discloses an aluminum alloy rear anti-collision beam assembly, which comprises an assembly mounting plate, a rear anti-collision beam and an energy absorption box welded at the two ends of the rear anti-collision beam. The rear anti-collision beam is arranged in an arc shape, the rear anti-collision beam is made of aluminum alloy material and its cross section is in the shape of a "sun" character. The rear end of the energy absorption box is fixedly connected with the assembly mounting plate. However, in the above structure, since the cross section of the rear anti-collision beam is equal, under the condition of meeting the anti-collision requirement, the weight of the automobile is increased, thereby increasing the fuel consumption and exhaust emission of the automobile. Moreover, in the case of low-speed collision, the rear part of the rear floor body, the rear part of the rear longitudinal beam and the rear wall panel deform in a large area, causing heavy repair cost loss to the user. SUMMARY

[0004] In view of the deficiencies in the prior art, the purpose of the present application is to provide an automobile aluminum rear anti-collision beam structure and automobile, which improves the low-speed collision capability of the automobile rear anti-collision beam structure and minimizes the weight, thereby reducing the fuel consumption and exhaust emission of the automobile.

[0005] In order to achieve the above-mentioned purpose, the present application is realized by the following technical scheme:

[0006] In a first aspect, the embodiments of the present application provide an automobile aluminum rear anti-collision beam structure made of aluminum material, which comprises a rear anti-collision beam body arranged in an arc shape, energy absorption components provided at the two ends of the rear anti-collision beam body, and a cross section of the rear anti-collision beam body in the shape of a "sun" character, comprising an upper part and a lower part. In the direction from top to bottom, the upper part of the rear anti-collision beam body is arranged in equal width, the lower part gradually increases in width, and the inner sides of the upper part and the lower part are flush.

[0007] Optionally, the outer wall of the rear anti-collision beam body is provided with wire harness fixing holes at the two ends.

[0008] Optionally, a plurality of first fixing frames are arranged at the middle position of the bottom surface of the rear anti-collision beam body, the positions of the first fixing frames match the middle mounting point positions of the rear bumper system, the first fixing frames are provided with first mounting holes for fixing with the middle part of the rear bumper system.

[0009] Optionally, the first fixing frame comprises a first fixing part, a second fixing part is arranged at the top end of the first fixing part and fixed to the bottom surface of the rear crash beam body, a third fixing part is arranged at the bottom end of the first fixing part, the extending directions of the second fixing part and the third fixing part are opposite, so that the first fixing frame has a Z-shaped structure, and the third fixing part is provided with a first mounting hole.

[0010] Further, the second fixing part and the third fixing part are provided with flanges on both sides.

[0011] Optionally, the energy-absorbing part at the two ends of the rear crash beam body is provided with a second fixing frame, the second fixing frame is provided with a second mounting hole for fixing the end of the rear bumper system.

[0012] Optionally, the second fixing frame has an L-shaped structure, comprising a vertical part and a horizontal part arranged vertically, the top end of the vertical part is connected to the energy-absorbing part, and the bottom end is provided with a second mounting hole.

[0013] Optionally, the energy-absorbing part is an energy-absorbing box with open ends at both sides, one open end of the energy-absorbing box is fixed to the inner side of the rear crash beam body, the other open end is provided with a mounting plate, the mounting plate is provided with a fixing hole, the mounting plate can be connected to the rear longitudinal beam of the vehicle body through the fixing hole, and the inner side of the top wall of the energy-absorbing box is provided with a protruding rib.

[0014] Optionally, a trailer threaded pipe is fixed to the rear crash beam body.

[0015] Optionally, the inner side of the rear crash beam body is provided with a positioning hole at the bottom.

[0016] In a second aspect, an embodiment of the present application provides an automobile provided with the automobile aluminum rear crash beam structure of the first aspect.

[0017] The present application has the following advantages:

[0018] 1. The aluminum rear crash beam structure of the present application is made of aluminum material, which is light in weight, effectively reduces the weight of the automobile, reduces the fuel consumption and exhaust emission of the automobile, and gradually increases the width of the rear crash beam body from top to bottom, which reduces the weight of the entire crash beam body, and also meets the overlapping amount of the collision wall and the rear crash beam body in the rear low-speed collision of the vehicle, effectively reduces the deformation of the rear part of the vehicle in the low-speed collision, and reduces the maintenance cost of the user.

[0019] 2. The aluminum rear bumper beam structure of the present application is provided with a wire harness fixing hole, a first fixing frame, a second fixing frame and a trailer threaded pipe, can realize the fixing of the wire harness, the fixing of the rear bumper system and the trailer function, realizes that one assembly part realizes multiple functions, greatly reduces the mold cost and period of separate development parts such as the trailer device and the lower device of the rear bumper system, has greater economic benefits. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings constituting a part of the specification of the present application are used to provide further understanding of the present application, the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application.

[0021] Figure 1 is a schematic diagram of the overall structure of embodiment 1 of the present application;

[0022] Figure 2 is a schematic diagram of the rear bumper beam body structure of embodiment 1 of the present application Figure 1 ;

[0023] Figure 3 is a schematic diagram of the A cross section of the present application Figure 2 ;

[0024] Figure 4 is a schematic diagram of the rear bumper beam body structure of embodiment 1 of the present application Figure 2 ;

[0025] Figure 5 is an explosion schematic diagram of the first energy-absorbing component of embodiment 1 of the present application;

[0026] Figure 6 is a schematic diagram of the energy-absorbing box of the first energy-absorbing component of embodiment 1 of the present application;

[0027] Figure 7 is a schematic diagram of the energy-absorbing box of the second energy-absorbing component of embodiment 1 of the present application;

[0028] Figure 8 is a schematic diagram of the first fixing frame structure of embodiment 1 of the present application;

[0029] Figure 9 is a schematic diagram of the trailer threaded pipe structure of embodiment 1 of the present application;

[0030] Wherein, 1. rear anti-collision cross beam body, 2. second energy-absorbing component, 3. second fixing frame, 4. mounting plate, 5. first fixing frame, 6. first fixing frame, 7. second fixing frame, 8. mounting plate, 9. first energy-absorbing component, 10. trailer threaded tube, 11. wire harness fixing hole, 12. mounting channel, 12-1. mounting channel surface, 13. mounting channel, 14. wire harness fixing hole, 15. wire harness fixing hole, 16. wire harness fixing hole, 17. first positioning hole, 18. connecting hole, 19. connecting hole, 20. connecting hole, 21. connecting hole, 22. second positioning hole, 23. convex rib, 24. through hole, 25. convex rib, 26. through hole, 27. through hole, 28. connecting hole, 29. connecting hole, 30. oblong hole, 31. first mounting hole, 32. internal thread structure, 33. second mounting hole. DETAILED DESCRIPTION

[0031] Example 1

[0032] The present embodiment provides a kind of automobile aluminum rear anti-collision cross beam structure, as shown in Figure 1 Including rear anti-collision cross beam body 1, rear anti-collision cross beam body 1 is made of aluminum material, relative to the rear anti-collision cross beam of steel material, the weight of rear anti-collision cross beam body 1 of the present embodiment is light, effectively reduce the weight of automobile, reduce oil consumption and exhaust emission.

[0033] As shown in Figures 2-3 Rear anti-collision cross beam body 1 adopts arcuate structure, its section is "day" type structure, including upper portion and lower portion, section adopts "day" type structure, greatly improves the bending resistance of rear anti-collision cross beam body, and bending resistance is improved by 70% according to the real vehicle test result.

[0034] In the present embodiment, along by upper to lower direction, the upper portion section of rear anti-collision cross beam body is set with equal width, the width of lower portion section gradually increases, and the inner side of upper portion and lower portion of rear anti-collision cross beam body 1 is flush with each other.

[0035] By this setting mode, the overall width of rear anti-collision cross beam body 1 is reduced, meets weight target, also can meet the overlap amount of collision wall and rear anti-collision cross beam body 1 in rear low-speed collision of vehicle, effectively reduces the deformation of most of rear portion of vehicle in low-speed collision of vehicle, thereby reducing the maintenance cost of user.

[0036] As shown in Figure 4 The inner side of rear anti-collision cross beam body 1 is provided with first positioning hole 17 at one end of bottom, and is provided with second positioning hole 22 at the other end, for realizing the positioning of rear anti-collision cross beam body and assembly.

[0037] The inner side of the rear anti-collision beam body is provided with energy absorption components at both ends, one end of which is a first energy absorption component 9, and the other end is a second energy absorption component 2.

[0038] As shown in the drawings, the first energy absorption component 9 and the second energy absorption component 2 are completely the same in structure, and are symmetrically arranged with respect to the center of the rear anti-collision beam body 1. Figures 5-7

[0039] Taking the first energy absorption component 9 as an example for description:

[0040] The first energy absorption component 9 adopts an energy absorption box with both ends open, and a protruding part is arranged on the upper part of the open end of one side of the energy absorption box. The open side is welded and fixed with the inner side of the rear anti-collision beam body, and the bottom surface of the protruding part is in contact with and welded to the top surface of the rear anti-collision beam body 1.

[0041] The other open end of the energy absorption box is welded and fixed with a mounting plate 8, and the mounting plate 8 is provided with a fixing hole. The mounting plate can be fixedly connected with the rear longitudinal beam of the vehicle body through the fixing hole and a threaded fastener, so as to realize the fixation of the entire rear anti-collision beam structure with the vehicle body.

[0042] The inner side of the top wall of the energy absorption box is provided with a convex rib 25, which can induce the folding of the convex rib 25 to absorb the collision energy of the rear vehicle. After the collision, only the rear anti-collision beam structure and the rear bumper skin of the vehicle are damaged, and the customer only needs to replace the rear anti-collision beam assembly to complete the vehicle body repair, without the need to replace the rear wall and the rear floor of the vehicle body frame assembly. This can greatly save the use and maintenance cost of the customer.

[0043] The outer side wall of the energy absorption box is provided with a through hole 27 as an exhaust hole, and the bottom wall is provided with a through hole 26 as a positioning hole of the energy absorption box.

[0044] The second energy absorption component 2 has the same structure as the first energy absorption component 9, and also adopts an energy absorption box with both ends open. One open end is welded and fixed with the inner side of the rear anti-collision beam body 1, and the other open end is welded and fixed with a mounting plate 4. The inner side of the top wall of the energy absorption box is provided with a convex rib 23, the bottom wall is provided with a through hole 24 as a positioning hole, and the outer side wall is provided with a through hole as an exhaust hole.

[0045] In this embodiment, the frame of the structure can be used as a platform solution for general development. Different models of vehicles only need to change the positions of the two energy absorption components and the modeling surface of the rear anti-collision beam body 1 to realize the generalization requirement of different vehicle models, thereby greatly reducing the development cost of the vehicle. The aluminum rear anti-collision beam structure of the present embodiment has realized the generalization of four different wheelbases and different models of vehicles.

[0046] ​Multiple first fixing brackets are fixed at the center of the bottom surface of the rear anti-collision beam body 1, and the position of the first fixing brackets matches the position of the middle mounting point of the rear bumper system.

[0047] In this embodiment, two first fixing frames are provided at the center of the bottom surface of the rear anti-collision beam body, namely the first fixing frame 5 and the first fixing frame 6. The two first fixing frames are arranged symmetrically with respect to the center of the rear anti-collision beam body.

[0048] like Figure 8 As shown, the first fixing frame adopts a Z-shaped structure, including a first fixing part. The top end of the first fixing part is connected to one end of the second fixing part, and the bottom end of the first fixing part is connected to one end of the third fixing part. The second fixing part and the third fixing part extend in opposite directions. The second fixing part has two connecting holes, namely connecting hole 28 and connecting hole 29. The bottom surface of the rear anti-collision beam body 1 is provided with connecting holes 18 and 19 corresponding to connecting holes 28 and 29, respectively. The second fixing part is fixed to the bottom surface of the rear anti-collision beam body 1 through the connecting holes and the core-pulling anchor.

[0049] Since two first fixing frames are provided, the bottom surface of the rear anti-collision beam body is also provided with connecting holes 20 and 21 that correspond to the connecting holes on the second fixing part of the other first fixing frame.

[0050] The third fixing part is provided with a first mounting hole 31, and a nut is welded at the first mounting hole 31. The third fixing part can be fixedly connected to the middle mounting point of the rear bumper system through the first mounting hole and the nut.

[0051] Furthermore, the first fixing part is provided with an elongated hole 30, which serves as a weight reduction hole. The second and third fixing parts are provided with flanges on both sides to enhance the structural strength of the entire first fixing frame.

[0052] The energy-absorbing components at both ends of the rear anti-collision beam body 1 are provided with a second fixing frame at the bottom. The first energy-absorbing component is fixed to the second fixing frame 7, and the second energy-absorbing component is fixed to the second fixing frame 3. The second fixing frame adopts an L-shaped structure, including a vertically arranged vertical part and a horizontal part. The top of the vertical part is provided with a connecting hole, and the vertical part is fixedly connected to the bottom of the mounting plate of the energy-absorbing component through the connecting hole. The horizontal part is provided with a second mounting hole 33, and a nut is welded at the second mounting hole, which can be fixedly connected to the end mounting point of the rear bumper system.

[0053] like Figure 9 As shown, a trailer threaded pipe 10 is also provided on one side end of the rear anti-collision beam body 1. The trailer threaded pipe 10 passes through the rear anti-collision beam body 1 in a horizontal direction through the installation channel on the rear anti-collision beam body 1. The outer tube surface of the trailer threaded pipe 10 is welded and fixed to the surface 12-1 of the installation channel. The inner surface of the trailer threaded pipe 10 is provided with an internal thread structure 32.

[0054] Through the setting mode, the trailer threaded pipe 10 transmits the trailer force to the rear bumper beam body 1, and the trailer device arranged on the rear bumper beam body with a closed section can greatly improve the towing capacity of the trailer device.

[0055] In the embodiment, in order to meet the needs of different trailer models, two mounting channels are arranged on the rear bumper beam body 1, which are mounting channel 12 and mounting channel 13. One of the mounting channels 13 corresponds to the position of the energy-absorbing component, and the mounting plate of the energy-absorbing component has an opening corresponding to the mounting channel. The other mounting channel 12 is arranged on one side of the energy-absorbing component.

[0056] By arranging two mounting channels, the trailer device of two types of positions can be met, and the mounting position of the final trailer threaded pipe can be selected according to the modeling needs.

[0057] The two ends of the outer side of the bumper beam body 1 are also provided with wire harness fixing holes. In the embodiment, one end of the bumper beam body is provided with one wire harness fixing hole, which is wire harness fixing hole 11, and the other end is provided with three wire harness fixing holes, which are wire harness fixing hole 14, wire harness fixing hole 15 and wire harness fixing hole 16. It can be understood that the wire harness fixing holes can be appropriately increased and reduced according to needs.

[0058] Through the arrangement of the wire harness fixing hole, the anti-collision bending deformation ability of the rear bumper beam body is not affected, and the cost of developing parts (fixing brackets) for wire harness fixing is greatly reduced.

[0059] The aluminum rear bumper beam structure of the embodiment is provided with wire harness fixing holes, first fixing brackets, second fixing brackets and trailer threaded pipes, which can realize the fixing of the wire harness, the fixing of the rear bumper system and the towing function, realize one assembly part to realize multiple functions, greatly reduce the mold cost and cycle of separately developed parts such as the trailer device and the lower device of the rear bumper system, and have great economic benefits.

[0060] Embodiment 2

[0061] The embodiment provides an automobile provided with the automobile aluminum rear bumper beam structure of embodiment 1, and the remaining structure of the automobile can adopt the prior art, which will not be described in detail here.

[0062] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An automobile aluminum rear crash beam structure made of aluminum material, comprising a rear crash beam body arranged in an arc shape, and energy absorbing components provided at both ends of the rear crash beam body, characterized in that, The cross-section of the rear anti-collision beam body is in a "day" - shaped structure, including an upper part and a lower part. Along the direction from top to bottom, the upper part of the rear anti-collision beam body is set with equal width, the width of the lower part gradually increases, and the inner sides of the upper and lower parts are flush with each other; At the middle position of the bottom surface of the rear anti-collision beam body, a plurality of first fixing brackets are provided. The positions of the first fixing brackets match the positions of the middle mounting points of the rear bumper system. The first fixing brackets are provided with first mounting holes for fixing with the middle part of the rear bumper system; The first fixing bracket includes a first fixing part. At the top end of the first fixing part, a second fixing part is provided. The second fixing part is fixed to the bottom surface of the rear anti-collision beam body. At the bottom end of the first fixing part, a third fixing part is provided. The extending directions of the third fixing part and the second fixing part are opposite, so that the first fixing bracket is in a "Z" - shaped structure. The third fixing part is provided with a first mounting hole; Furthermore, flanges are provided on both sides of the second fixing part and the third fixing part; The energy - absorbing component adopts an energy - absorbing box with both ends open. One open end of the energy - absorbing box is fixed to the inner side surface of the rear anti - collision beam body. On the other open end, a mounting plate is provided. The mounting plate is provided with fixing holes. The mounting plate can be connected to the vehicle rear longitudinal beam through the fixing holes. On the inner side surface of the top wall of the energy - absorbing box, convex ribs are provided.

2. The automobile aluminum rear crash beam structure according to claim 1, wherein Wire harness fixing holes are provided at both ends of the outer wall of the rear anti - collision beam body.

3. The automobile aluminum rear crash beam structure according to claim 1, wherein At both ends of the rear anti - collision beam body, the energy - absorbing components are provided with second fixing brackets. The second fixing brackets are provided with second mounting holes for fixing with the ends of the rear bumper system.

4. The automobile aluminum rear crash beam structure according to claim 3, wherein The second fixing bracket adopts an L - shaped structure, including a vertical part and a horizontal part arranged vertically. The top end of the vertical part is connected to the energy - absorbing component, and the bottom end is provided with a second mounting hole.

5. The automobile aluminum rear crash beam structure according to claim 1, wherein A trailer screw pipe is fixed on the rear anti - collision beam body.

6. The automobile aluminum rear impact beam structure according to claim 1, wherein Positioning holes are provided at the bottom of the inner side surface of the rear anti - collision beam body.

7. An automobile characterized by comprising: An automotive aluminum rear anti - collision beam structure according to any one of claims 1 - 6 is provided.

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