Automobile aluminum rear anti-collision beam structure and automobile

Abstract

The invention relates to an automobile aluminum rear anti-collision beam structure and an automobile, belongs to the technical field of automobiles, solves the defects of a current rear anti-collision beam structure, is made of aluminum materials and comprises an arch-shaped rear anti-collision beam body, energy absorption parts are arranged at the two ends of the rear anti-collision beam body, and the section of the rear anti-collision beam body is of a structure shaped like a Chinese character'ri '. Comprising an upper portion and a lower portion, the width of the upper portion of the rear anti-collision beam body is equal from top to bottom, the width of the lower portion is gradually increased, the inner side faces of the upper portion and the lower portion are flush, the rear anti-collision beam is light in weight, deformation of the rear portion of a vehicle in low-speed collision is small, and maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and particularly relates to an aluminum rear anti-collision beam structure for an automobile and an automobile. Background Art

[0002] The statements herein only provide background art related to the present invention and do not necessarily constitute prior art.

[0003] Automobile collision is a requirement of mandatory regulations, and rear collision must meet corresponding requirements. Currently, the rear anti-collision beams of most automobiles are made of steel or aluminum, and the rear anti-collision beam body has a constant cross-section, that is, the cross-sectional width of the anti-collision beam body is equal along the vertical direction. For example, Patent CN216401366U discloses an aluminum alloy rear anti-collision beam assembly, including an assembly mounting plate, a rear anti-collision beam, and energy-absorbing boxes welded to the two ends of the rear anti-collision beam at the front end. The rear anti-collision beam is arranged in an arch shape. The rear anti-collision beam is made of aluminum alloy and its cross-section is in a "day" - shaped structure. The rear ends of the energy-absorbing boxes are respectively fixedly connected to the assembly mounting plate. However, in the above structure, since the cross-section of the rear anti-collision beam is a constant cross-section, under the condition of meeting the anti-collision requirements, the weight of the automobile is increased, thereby increasing the fuel consumption and exhaust emissions of the automobile. Moreover, in the case of a low-speed collision, large areas such as the rear part of the rear floor body, the rear part of the rear longitudinal beam, and the rear panel are deformed, bringing relatively significant losses in maintenance costs to the users. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide an aluminum rear anti-collision beam structure for an automobile and an automobile, which improve the low-speed collision ability of the rear anti-collision beam structure of the automobile, and minimize the weight to the greatest extent, reducing the fuel consumption and exhaust emissions of the automobile.

[0005] To achieve the above purpose, the present invention is realized through the following technical solutions:

[0006] In a first aspect, an embodiment of the present invention provides an aluminum rear anti-collision beam structure for an automobile, which is made of aluminum material and includes a rear anti-collision beam body arranged in an arch shape. Energy-absorbing components are provided at both ends of the rear anti-collision beam body. 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 has a constant width, the width of the lower part gradually increases, and the inner sides of the upper part and the lower part are flush.

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

[0008] Optionally, a plurality of first fixing brackets are arranged at the middle position of the bottom surface of the rear anti-collision beam body. 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 to the middle of the rear bumper system.

[0009] Optionally, the first fixing frame includes a first fixing portion, a second fixing portion is provided at the top of the first fixing portion, the second fixing portion is fixed to the bottom surface of the rear anti-collision beam body, a third fixing portion is provided at the bottom end of the first fixing portion, and the extension directions of the third fixing portion and the second fixing portion are opposite, so that the first fixing frame is in a "Z"-shaped structure, and the third fixing portion is provided with a first mounting hole;

[0010] Furthermore, flanges are provided on both sides of the second fixing portion and the third fixing portion.

[0011] Optionally, the energy absorbing components at both ends of the rear anti-collision beam body are provided with a second fixing frame, and the second fixing frame is provided with a second mounting hole for fixing to the end of the rear bumper system.

[0012] Optionally, the second fixing frame adopts an L-shaped structure, including a vertical part and a horizontal part which are vertically arranged, 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.

[0013] Optionally, the energy absorbing component adopts an energy absorbing box with open ends, one open end of the energy absorbing box is fixed to the inner side of the rear anti-collision beam body, and the other open end is provided with a mounting plate, the mounting plate is provided with fixing holes, the mounting plate can be connected to the rear longitudinal beam of the vehicle body through the fixing holes, and the inner side of the top box wall of the energy absorbing box is provided with convex ribs.

[0014] Optionally, a trailer threaded tube is fixed to the rear anti-collision beam body.

[0015] Optionally, a positioning hole is provided at the bottom of the inner side surface of the rear anti-collision beam body.

[0016] In a second aspect, an embodiment of the present invention provides a car provided with the aluminum rear anti-collision beam structure of the car described in the first aspect.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The aluminum rear anti-collision beam structure of the present invention is made of aluminum material and is light in weight, which effectively reduces the weight of the car, reduces the fuel consumption and exhaust emissions of the car, and the width of the rear anti-collision beam body gradually increases from top to bottom. While reducing the weight of the entire anti-collision beam body, it can also meet the overlap between the collision wall and the rear anti-collision beam body in a low-speed rear collision of the vehicle, effectively reducing most of the deformation of the rear of the vehicle in a low-speed collision, thereby reducing the maintenance cost of users.

[0019] 2. The aluminum rear anti-collision beam structure of the present invention is provided with a wiring harness fixing hole, a first fixing frame, a second fixing frame and a trailer threaded tube, which can realize the fixing of the wiring harness, the fixing of the rear bumper system and the trailer function, and realizes multiple functions of one assembly part, greatly reducing the mold cost and cycle of separately developed parts such as the trailer device and the lower device of the rear bumper system, and has great economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0021] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the rear anti-collision beam body of Example 1 of the present invention. Figure 1 ;

[0023] Figure 3 The present invention Figure 2 A-direction cross-sectional diagram;

[0024] Figure 4 This is a schematic diagram of the structure of the rear anti-collision beam body of Example 1 of the present invention. Figure 2 ;

[0025] Figure 5 This is a schematic diagram of the explosion of the first energy absorbing component of Example 1 of the present invention;

[0026] Figure 6 is a schematic diagram of an energy absorbing box of the first energy absorbing component of Example 1 of the present invention;

[0027] Figure 7 is a schematic diagram of an energy absorbing box of the second energy absorbing component in Example 1 of the present invention;

[0028] Figure 8 is a schematic structural diagram of a first fixing frame in accordance with Embodiment 1 of the present invention;

[0029] Fig. 9 This is a schematic diagram of the structure of a trailer threaded pipe according to Embodiment 1 of the present invention;

[0030] Among them, 1. Rear anti-collision beam body, 2. Second energy-absorbing component, 3. Second fixing bracket, 4. Mounting plate, 5. First fixing bracket, 6. First fixing bracket, 7. Second fixing bracket, 8. Mounting plate, 9. First energy-absorbing component, 10. Trailer threaded pipe, 11. Wiring harness fixing hole, 12. Mounting channel, 12-1. Surface of the mounting channel, 13. Mounting channel, 14. Wiring harness fixing hole, 15. Wiring harness fixing hole, 16. Wiring harness fixing hole, 17. First positioning hole, 18. Connection hole, 19. Connection hole, 20. Connection hole, 21. Connection hole, 22. Second positioning hole, 23. Rib, 24. Through hole, 25. Rib, 26. Through hole, 27. Through hole, 28. Connection hole, 29. Connection hole, 30. Slotted hole, 31. First mounting hole, 32. Internal thread structure, 33. Second mounting hole. Detailed implementation mode

[0031] Embodiment 1

[0032] This embodiment provides an aluminum rear anti-collision beam structure for an automobile, as Figure 1 shown, including a rear anti-collision beam body 1, which is made of aluminum material. Compared with the rear anti-collision beam made of steel material, the rear anti-collision beam body 1 in this embodiment is light in weight, effectively reducing the weight of the automobile, reducing fuel consumption and exhaust emissions.

[0033] As Figure 2-Figure 3 shown, the rear anti-collision beam body 1 adopts an arched structure, and its cross-section is in a "day" character structure, including an upper part and a lower part. The cross-section adopts a "day" character structure, greatly improving the anti-bending performance of the rear anti-collision beam body. According to the actual vehicle test results, the anti-bending performance is improved by 70%.

[0034] In this embodiment, along the direction from top to bottom, the upper cross-section of the rear anti-collision beam body is set with equal width, the width of the lower cross-section gradually increases, and the inner sides of the upper and lower parts of the rear anti-collision beam body 1 are flush with each other.

[0035] Adopting this setting method reduces the overall width of the rear anti-collision beam body 1. While meeting the weight target, it can also meet the overlap amount between the collision wall and the rear anti-collision beam body 1 during the rear low-speed collision of the vehicle, effectively reducing the large deformation of the rear part of the vehicle during the low-speed collision, thereby reducing the maintenance cost of the users.

[0036] As Figure 4 shown, one end of the bottom of the inner side of the rear anti-collision beam body 1 is provided with a first positioning hole 17, and the other end is provided with a second positioning hole 22, which is used to realize the positioning and assembly of the rear anti-collision beam body.

[0037] Energy absorbing components are provided at both ends of the inner side surface of the rear anti-collision beam body, wherein the energy absorbing component at one end is a first energy absorbing component 9 , and the energy absorbing component at the other end is a second energy absorbing component 2 .

[0038] like Figure 5-Figure 7 As shown, the first energy absorbing component 9 and the second energy absorbing component 2 have exactly the same structure and are symmetrically arranged relative to the center of the rear anti-collision beam body 1 .

[0039] Take the first energy absorbing component 9 as an example for explanation:

[0040] The first energy absorbing component 9 adopts an energy absorbing box with open ends. A raised portion is provided on the upper part of one open end of the energy absorbing box. The open side is welded and fixed to the inner side surface of the rear anti-collision beam body. The bottom surface of the raised portion contacts and is welded to the top surface of the rear anti-collision beam body 1.

[0041] A mounting plate 8 is welded and fixed to the other open end of the energy absorption box. The mounting plate 8 is provided with fixing holes. The mounting plate can be fixedly connected to the rear longitudinal beam of the vehicle body through the fixing holes and threaded fasteners, thereby achieving the fixation of the entire rear anti-collision beam structure to the vehicle body.

[0042] The inner side of the top box wall of the energy absorption box is provided with convex ribs 25, which absorb the collision energy of the rear vehicle by inducing the convex ribs 25 to fold. After the collision, only the rear anti-collision beam structure and the rear protection skin of the front vehicle are damaged. The customer only needs to replace the rear anti-collision beam assembly to complete the body repair, and there is no need to replace the rear surround, rear floor and other body frame assemblies. It can greatly save the customer's use and maintenance costs.

[0043] The outer side walls of the energy absorption box are provided with through holes 27 as exhaust holes, and the bottom box wall is provided with through holes 26 as positioning holes for the energy absorption box.

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

[0045] In this embodiment, the framework of this structure can be developed as a platform solution. Different models of cars only need to change the positions of the two energy-absorbing components and the shape of the rear anti-collision beam body 1 to meet the universal requirements of different models, thereby minimizing the development cost of the car. The aluminum rear anti-collision beam structure of this embodiment has currently achieved universalization for four models with different wheelbases and different shapes.

[0046] A plurality of first fixing frames are fixed to the middle position of the bottom surface of the rear anti-collision beam body 1 , and the positions of the first fixing frames match the positions of the middle mounting points of the rear bumper system.

[0047] In this embodiment, two first fixing frames are provided at the middle of the bottom surface of the rear anti-collision beam body, namely a first fixing frame 5 and a first fixing frame 6, and the two first fixing frames are symmetrically arranged relative 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, 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 is provided with 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 connecting holes 19 corresponding to the connecting holes 28 and the connecting holes 29 respectively, and 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 nails.

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

[0050] The third fixing portion is provided with a first mounting hole 31 , a nut is welded at the first mounting hole 31 , and the third fixing portion 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 portion is provided with an oblong hole 30, which serves as a weight-reducing hole, and flanges are provided on both sides of the second fixing portion and the third fixing portion to enhance the structural strength of the entire first fixing frame.

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

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

[0054] Through this arrangement, the trailer threaded tube 10 transmits the trailer force to the rear anti-collision beam body 1, and the trailer device is arranged on the rear anti-collision beam body with a closed cross-section, which can greatly improve the towing capacity of the trailer device.

[0055] In this embodiment, in order to meet the needs of trailers of different models, two installation channels are provided on the rear anti-collision beam body 1, namely, the installation channel 12 and the installation channel 13. One of the installation channels 13 corresponds to the position of the side energy absorbing component, and accordingly, an opening corresponding to the installation channel is provided on the installation plate of the energy absorbing component. The other installation channel 12 is provided on one side of the energy absorbing component.

[0056] By setting two installation channels, trailer devices with two styling positions can be satisfied, and the installation position of the final trailer threaded pipe can be specifically selected according to styling requirements.

[0057] The two ends of the outer side surface of the anti-collision beam body 1 are also provided with wire harness fixing holes. In the present embodiment, one end of the anti-collision beam body is provided with a wire harness fixing hole, which is the wire harness fixing hole 11, and the other end is provided with three wire harness fixing holes, which are respectively the wire harness fixing hole 14, the wire harness fixing hole 15 and the wire harness fixing hole 16. It can be understood that the wire harness fixing holes can be appropriately increased or decreased according to demand.

[0058] By setting the wiring harness fixing holes, the anti-collision bending and deformation capability of the rear anti-collision beam body is not affected, and the cost of adding development parts (fixing brackets) for wiring harness fixing is also greatly reduced.

[0059] The aluminum rear anti-collision beam structure of this embodiment is provided with a wiring harness fixing hole, a first fixing frame, a second fixing frame and a trailer threaded tube, which can realize the fixing of the wiring harness, the fixing of the rear bumper system and the trailer function, and realize multiple functions of one assembly part, which greatly reduces the mold cost and cycle of separately developed parts such as the trailer device and the lower device of the rear bumper system, and has great economic benefits.

[0060] Example 2

[0061] This embodiment provides a car, which is provided with the car aluminum rear anti-collision beam structure described in Example 1. The remaining structures of the car can adopt the existing technology and will not be described in detail here.

[0062] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. 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 aluminum rear anti-collision beam structure for automobiles, made of aluminum material, comprising a rear anti-collision beam body arranged in an arch shape, and energy absorbing components are arranged at both ends of the rear anti-collision beam body, characterized in that: The cross section of the rear anti-collision beam body is a "sun" shaped structure, including an upper part and a lower part. From top to bottom, the upper part of the rear anti-collision beam body is set with equal width, the lower part width gradually increases and the inner side surfaces of the upper and lower parts are flush.

2. The automotive aluminum rear anti-collision beam structure according to claim 1, characterized in that: Both ends of the outer wall of the rear anti-collision beam body are provided with wiring harness fixing holes.

3. The automotive aluminum rear anti-collision beam structure as claimed in claim 1, characterized in that: A plurality of first fixing frames are arranged at the middle position of the bottom surface of the rear anti-collision beam body, and the positions of the first fixing frames match the positions of the middle mounting points of the rear bumper system. The first fixing frames are provided with first mounting holes for fixing to the middle of the rear bumper system.

4. The automotive aluminum rear anti-collision beam structure as claimed in claim 3, characterized in that: The first fixing frame includes a first fixing portion, a second fixing portion is provided at the top of the first fixing portion, the second fixing portion is fixed to the bottom surface of the rear anti-collision beam body, a third fixing portion is provided at the bottom end of the first fixing portion, and the third fixing portion and the second fixing portion extend in opposite directions, so that the first fixing frame is in a "Z"-shaped structure, and the third fixing portion is provided with a first mounting hole; Furthermore, flanges are provided on both sides of the second fixing portion and the third fixing portion.

5. The automotive aluminum rear anti-collision beam structure as claimed in claim 1, characterized in that: The energy absorbing components at both ends of the rear anti-collision beam body are provided with second fixing frames, and the second fixing frames are provided with second mounting holes for fixing with the ends of the rear bumper system.

6. The automotive aluminum rear anti-collision beam structure as claimed in claim 5, characterized in that: The second fixing frame adopts an L-shaped structure, including a vertical part and a horizontal part which are vertically arranged. 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.

7. The automotive aluminum rear anti-collision beam structure as claimed in claim 1, characterized in that: The energy absorbing component adopts an energy absorbing box with open ends. One open end of the energy absorbing box is fixed to the inner side of the rear anti-collision beam body, and the other open end is provided with a mounting plate, and the mounting plate is provided with fixing holes. The mounting plate can be connected to the rear longitudinal beam of the vehicle body through the fixing holes, and the inner side of the top box wall of the energy absorbing box is provided with convex ribs.

8. The automotive aluminum rear anti-collision beam structure as claimed in claim 1, characterized in that: A trailer threaded pipe is fixed on the rear anti-collision beam body.

9. The automotive aluminum rear anti-collision beam structure as claimed in claim 1, characterized in that: A positioning hole is provided at the bottom of the inner side surface of the rear anti-collision beam body.

10. An automobile, characterized in that: An automotive aluminum rear anti-collision beam structure as described in any one of claims 1 to 9 is provided.

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