Anti-collision energy absorption system and vehicle

Abstract

The utility model provides an anti-collision energy absorption system and a vehicle, which are used for enabling a cross beam to have better impact resistance and can also ensure that the cross beam can absorb the maximum impact energy during deformation. The anti-collision energy absorption system comprises a cross beam and an energy absorption box which are made of aluminum alloy, a first pressing rivet nut is preassembled on the energy absorption box, and the cross beam is connected with the first pressing rivet nut preassembled on the energy absorption box through a first bolt.

Description

Technical Field

[0001] The utility model relates to the field of vehicle anti-collision energy absorption, in particular to an anti-collision energy absorption system and a vehicle. Background Art

[0002] The main function of the rear collision crossbeam of an automobile is to maintain the stability of the rear-end structure of the automobile. Whether it is the structural integrity and connection stability of the rear collision crossbeam itself, strong structural connections and strength requirements are needed to ensure the safety of vehicle occupants and protect the structural integrity of the vehicle itself in the event of a high-speed rear-end collision.

[0003] In the prior art, the crossbeam and the energy absorption box are usually assembled by welding. Since the energy absorption box and the crossbeam are made of aluminum alloy materials, the welding assembly method will reduce the strength of the energy absorption box and the crossbeam, and welding aluminum alloy will result in higher maintenance costs. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides an anti-collision energy absorption system and a vehicle to improve the strength of the crossbeam and the energy absorption box and reduce the maintenance cost.

[0005] The technical solution of the utility model is as follows:

[0006] On the one hand, the utility model provides an anti-collision energy absorption system, including: a crossbeam and an energy absorption box made of aluminum alloy;

[0007] A first press riveting nut is pre-installed on the energy absorption box, and the crossbeam is connected to the first press riveting nut pre-installed on the energy absorption box through a first bolt.

[0008] Preferably, the energy absorption box adopts a "day" shaped structure.

[0009] Preferably, the anti-collision energy absorption system further includes: a skirt plate and a side beam made of aluminum alloy;

[0010] A skirt plate connecting plate is installed on one side of the side beam facing the skirt plate. A second press riveting nut is pre-installed on the skirt plate connecting plate. The energy absorption box and the skirt plate are connected to the second press riveting nut pre-installed on the skirt plate connecting plate through a second bolt.

[0011] Preferably, energy absorption boxes are installed at both ends of the crossbeam. First installation holes for the first bolts to pass through are provided at both ends of the crossbeam, and the first press riveting nuts are respectively installed in the second installation holes arranged on the energy absorption box.

[0012] Preferably, a third mounting hole for the second bolt to pass through is provided on the energy absorption box, a fourth mounting hole for the second bolt to pass through is provided on the skirt plate, and the second press riveting nuts are respectively installed in the fifth mounting holes arranged on the skirt plate connecting plate. The third mounting hole, the fourth mounting hole and the fifth mounting hole are opposite to each other.

[0013] Preferably, the side beam and the skirt plate connecting plate are fixedly welded.

[0014] On the other hand, the present invention also provides a vehicle, including the anti-collision energy absorption system described in the above claims.

[0015] The beneficial effects of the present invention are as follows:

[0016] Since the energy absorption box and the cross beam are made of aluminum alloy, the existing welding connection method of the energy absorption box and the cross beam will reduce the strength of the energy absorption box and the cross beam; in this solution, the connection method of the press riveting nut is used to press rivet the nut onto the energy absorption box, and the cross beam is locked with the press riveting nut by a high-strength bolt to realize the connection with the energy absorption box. The press riveting nut is used to ensure the strength of the energy absorption box itself. At the same time, the connection method of the press riveting nut and the bolt is convenient for product maintenance.

[0017] The press riveting nut is convenient to install on the parts, only simple press riveting is required. The press riveting nut has high anti-torque resistance, is small and delicate, and can be applied to a variety of precision equipment and electronic products. And the press riveting nut specifications are serialized, which can meet a variety of design requirements. The press riveting nuts used at the energy absorption box and the skirt plate connecting plate are completely embedded in the skirt plate connecting plate and the energy absorption box, with a smooth surface, higher friction coefficient after fitting, and the inlay locking function can be completed only by pressure.

[0018] The energy absorption box in this solution adopts a "day" - shaped structure, with the length, width and height being 100*90*66mm respectively, so as to ensure the strength of the cross beam and the maximum collapse amount of the energy absorption box after a collision. The installation of the cross beam and the energy absorption box forms an "×" structure, ensuring the maximum distance in the Y - direction and Z - direction as much as possible, so that the bending moment strength reaches the maximum. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an exploded schematic view of the anti - collision energy absorption system in this embodiment;

[0020] Figure 2 is a connection schematic view of the skirt plate and the cross beam in this embodiment;

[0021] Figure 3 is a connection schematic view of the cross beam in this embodiment;

[0022] Figure 4 is a schematic view of the connection holes of the skirt plate connecting plate in this embodiment;

[0023] Figure 5 Schematic diagram of the connection between the cross beam and the energy absorption box in this embodiment;

[0024] Figure 6 Schematic diagram of the opening on the cross beam in this embodiment;

[0025] Figure 7 Schematic diagram of the mounting holes on the energy absorption box in this embodiment;

[0026] Figure 8 Schematic diagram of the welding between the side beam and the skirt connecting plate in this embodiment;

[0027] Figure 9 Schematic diagram of the assembly of the anti-collision energy absorption system in this embodiment;

[0028] Explanation of reference numerals: 1 - cross beam; 2 - energy absorption box; 3 - skirt; 4 - side beam; 5 - skirt connecting plate; 11 - first mounting hole; 21 - second mounting hole; 31 - fourth mounting hole; 51 - fifth mounting hole. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the specific implementation manners and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the present utility model. In addition, in the following descriptions, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0030] As Figures 1 to 9 shown, the present utility model provides an anti-collision energy absorption system, including: a cross beam 1 and an energy absorption box 2; a first press riveting nut is pre-installed on the energy absorption box 2, and the cross beam 1 is connected to the first press riveting nut pre-installed on the energy absorption box 2 through a first bolt.

[0031] In this embodiment, the first bolt is a high-strength bolt.

[0032] Since the friction-type high-strength bolts do not allow slip between the connected plate members, the stiffness of the connection section is basically the same as that of the plate itself, and the structure of the friction-type high-strength bolts itself has a large stiffness. Compared with the welding method, the bolt connection method will significantly improve the connection strength between the cross beam and the energy absorption box; however, the existing locking nut materials are mainly carbon steel, stainless steel, and copper, and there are material differences between the existing locking nut materials and the cross beam and the energy absorption box. Therefore, it is impossible to weld a steel locking nut on the energy absorption box, and only a press riveting nut can be used to achieve the connection.

[0033] Furthermore, using a press riveting nut and a bolt connection to achieve the assembly of the energy absorption box and the cross beam can meet the high stiffness requirements as much as possible and ensure low subsequent disassembly and repair use.

[0034] Specifically, in the embodiment of the present utility model, a first press riveting nut is pre-installed on the energy absorption box 2, and together with the cross beam, it forms a rear collision cross beam assembly through high-strength bolts. As described above, the connection between the press riveting nut and the bolt is the main connection method in this embodiment, which is common for the front and rear collision cross beams. High-strength bolts and the first press riveting nut can ensure the installation stiffness of the connection point and the fatigue resistance performance, and the structural stiffness around the installation point is large.

[0035] In this solution, the energy absorption box 2 adopts a "day" - shaped structure, with the length, width, and height being 100*90*66 mm respectively, so as to ensure the strength of the cross beam and enable the energy absorption box to achieve the maximum collapse amount after a collision. The installation of the cross beam 1 and the energy absorption box 2 forms an "×" structure, trying to ensure the maximum distance in the Y - direction and Z - direction as much as possible, so that the bending moment strength reaches the maximum.

[0036] Combined Figure 9 , in order to ensure the maintenance economy of the rear collision cross beam, the cross beam 1 must maintain a distance of 30+ in the X - direction from the skirt panel 3 at the Y0 position. In this embodiment, the arch height of the aluminum alloy cross beam 1 used is 125, the outer radius is 2000, and the gap between the cross beam 1 and the skirt panel 3 at Y0 is about 40. It can meet the requirements of the C - NCAP M - level.

[0037] Combined Figure 1 and Figure 8 , in the embodiment of the present utility model, the anti - collision energy absorption system further includes: a skirt panel 3 and a side beam 4 made of aluminum alloy; a skirt panel connecting plate 5 is installed on one side of the side beam 4 facing the skirt panel 3, a second press riveting nut is pre - installed on the skirt panel connecting plate 5, and the energy absorption box 2 and the skirt panel 3 are connected to the second press riveting nut pre - installed on the skirt panel connecting plate 5 through second bolts. This is the connection place between the collision cross beam assembly and the skirt panel assembly. Since it is a three - layer connection of the skirt panel connecting plate (aluminum), the rear skirt panel side plate (iron), and the collision cross beam energy absorption box (aluminum alloy), it is impossible to use the welding method and can only adopt the screwing form.

[0038] In this embodiment, the cross beam 1, the energy absorption box 2, and the side beam 4 are all made of aluminum alloy material. As Figure 3 , Figure 6 and Figure 7 , both ends of the cross beam 1 are installed with the energy absorption box 2, both ends of the cross beam 1 are provided with first installation holes 11 for each first bolt to pass through, and the first press riveting nuts are respectively installed in the second installation holes 21 arranged on the energy absorption box 2. The second installation hole 21 is a round hole with a diameter of 16 mm.

[0039] As Figure 2 , Figure 4 , Figure 5 and Figure 6, a third mounting hole for the second bolt to pass through is provided on the energy absorption box 2, a fourth mounting hole 31 for the second bolt to pass through is provided on the skirt plate 3, and the second press riveting nuts are respectively installed in the fifth mounting holes 51 arranged on the skirt plate connecting plate 5. The third mounting hole, the fourth mounting hole 31 and the fifth mounting hole 51 are opposite to each other. There are 2 groups of the third mounting hole, the fourth mounting hole 31 and the fifth mounting hole respectively. The third mounting hole includes a circular hole with a diameter of 16 mm and an oblong hole of 11*16 mm. The fourth mounting holes 31 are all through holes with a diameter of 17 mm. The fifth mounting holes are all circular holes with a diameter of 16 mm.

[0040] Wherein, in this embodiment, the side beam 4 and the skirt plate connecting plate 5 are fixedly welded.

[0041] The embodiment of the present invention also provides a vehicle, including the above anti-collision energy absorption system.

[0042] It should be noted that the various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same and similar parts among the various embodiments can be referred to each other.

[0043] Although the preferred embodiments of the embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present invention.

[0044] It should also be noted that in this text, the orientation or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. This is 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. Therefore, it should not be construed as a limitation to the present utility model. In addition, relative terms such as "first" and "second" are used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations, nor can they be construed as indicating or implying relative importance. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article or terminal device comprising a series of elements does not include those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising the element.

Claims

1. An anti-collision energy absorption system, characterized in that: include: The crossbeam and energy absorption box are made of aluminum alloy; The energy absorption box is pre-installed with a first pressure rivet nut, and the crossbeam is connected to the first pressure rivet nut pre-installed on the energy absorption box through a first bolt; Skirt panels and side beams made of aluminum alloy; A skirt board connecting plate is installed on the side of the side beam facing the skirt board, and a second rivet nut is pre-installed on the skirt board connecting plate. The energy absorption box and the skirt board are connected with the second rivet nut pre-installed on the skirt board connecting plate through a second bolt.

2. The anti-collision energy absorption system according to claim 1, characterized in that: The energy absorption box adopts a "sun" shaped structure.

3. The anti-collision energy absorption system according to claim 1, characterized in that: The energy absorption boxes are installed at both ends of the crossbeam, and first mounting holes for the first bolts to pass through are arranged at both ends of the crossbeam, and the first rivet nuts are respectively installed in the second mounting holes arranged on the energy absorption box.

4. The anti-collision energy absorption system according to claim 1, characterized in that: The energy absorption box is provided with a third mounting hole for the second bolt to pass through, the skirt plate is provided with a fourth mounting hole for the second bolt to pass through, and the second rivet nuts are respectively installed in each fifth mounting hole arranged on the skirt plate connecting plate, and the third mounting hole, the fourth mounting hole and the fifth mounting hole are opposite to each other.

5. The anti-collision energy absorption system according to claim 1, characterized in that: The side beam and the skirt plate connecting plate are welded and fixed.

6. A vehicle, characterized in that: The anti-collision energy absorption system comprises the one described in any one of claims 1 to 5.

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