Automobile balance beam and automobile

Abstract

The utility model provides an automobile balance beam and an automobile, and relates to the field of automobiles. The automobile balance beam comprises a middle connector and two main beam bodies, the two main beam bodies are arranged on the two sides of the middle connector respectively and connected with the middle connector, the main beam bodies are made of alloy profiles, and inner partition plates extending in the length direction of the main beam bodies are arranged in the main beam bodies. According to the automobile balance beam provided by the utility model, the alloy profile is adopted as the main beam body, and the cross section size of the main beam body can be set to be larger on the premise that the space design boundary requirement is met, so that the torsional rigidity of the automobile balance beam is improved; and the rigidity of the automobile balance beam is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of automobiles, in particular to an automobile balance beam and an automobile. Background Art

[0002] Existing balance beams for all-terrain vehicles are manufactured using rectangular steel sections welded with solid joints. To reduce costs, the steel sections were square, and the dimensions were limited by existing commercially available profiles, resulting in a balance beam cross-section measuring just 50mm x 50mm (outer dimensions). Within these dimensions, to ensure the balance beam's strength and reliability, the cross-section thickness was designed to be 3mm. Including the solid joints in the center and on both sides, the total balance beam mass reached 6.34kg. Although this design resulted in a relatively small structural dimension, the balance beam's mass was significantly excessive and did not provide sufficient strength. In particular, the torsional stiffness along the balance beam's axis was low due to its small cross-section. Utility Model Content

[0003] The utility model provides an automobile balance beam, which is used to solve the problems of large mass and insufficient rigidity and strength performance of the existing balance beam.

[0004] The utility model provides an automobile balance beam, comprising:

[0005] Intermediate joint;

[0006] Two main beams are respectively arranged on both sides of the middle joint and connected to the middle joint. The main beams are alloy profiles, and an inner partition extending along the length direction of the main beam is arranged inside the main beam.

[0007] According to the automobile balance beam provided by the utility model, two inner baffles are provided inside the main beam body, and the two inner baffles are spaced apart along the height direction of the main beam body.

[0008] According to the automobile balance beam provided by the utility model, the thickness of the inner partition plate is smaller than the thickness of the side wall of the main beam body.

[0009] According to the utility model, an automobile balance beam is provided, which also includes a bolt. The middle joint is provided with a first connecting portion on the side facing the main beam body. The first connecting portion is inserted between the two inner partitions. The inner partition is provided with a first through hole at one end close to the middle joint. The first connecting portion is provided with a second through hole. The main beam body is provided with a third through hole at one end close to the middle joint. The bolt is passed through the first through hole, the second through hole and the third through hole. The end of the main beam body close to the middle joint is welded to the middle joint.

[0010] According to the automobile balance beam provided by the utility model, a bolt connection sleeve is provided in the third through hole, the bolt connection sleeve is sleeved on the bolt, and is welded to the main beam body.

[0011] According to the automobile balance beam provided by the utility model, the cross-sectional width of the first connecting portion gradually decreases in a direction in which the first connecting portion is away from the middle joint.

[0012] According to the automobile balance beam provided by the utility model, the first connecting portion is provided with a weight-reducing hole.

[0013] According to the utility model, an automobile balance beam is provided, which further includes:

[0014] Two side joints are arranged in a one-to-one correspondence at one end of the two main beams away from the middle joint.

[0015] According to the automobile balance beam provided by the utility model, both main beam bodies are provided with accessory connecting pieces.

[0016] The utility model also provides an automobile, comprising an automobile body and any one of the above automobile balance beams, wherein the automobile balance beam is arranged on the automobile body.

[0017] The automobile balance beam provided by the utility model adopts an alloy profile as the main beam body. The cross-sectional dimensions of the main beam body can be set to a larger cross-sectional dimension while meeting the spatial design boundary requirements, so as to improve the torsional stiffness of the automobile balance beam. By arranging an inner partition extending along the length direction of the main beam body inside the main beam body, the stiffness of the automobile balance beam is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the automobile balance beam provided by the utility model.

[0020] Figure 2 The utility model is a schematic diagram of the exploded structure of the automobile balance beam provided by the utility model.

[0021] Figure 3 It is a schematic diagram of the top view of the automobile balance beam provided by the utility model.

[0022] Figure 4 yes Figure 3 Schematic diagram of the cross-section structure along the section line AA.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the intermediate joint provided by the utility model.

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the main beam body provided by the utility model.

[0025] Reference numerals:

[0026] 10. Middle joint; 11. First connecting part; 12. Second through hole; 20. Main beam; 21. Inner partition; 22. First through hole; 23. Third through hole; 24. Bolt connection sleeve; 25. Weight reduction hole; 26. Accessory connector; 30. Side joint; 31. Second connecting part; 32. First connecting hole; 33. Second connecting hole; 34. Third connecting hole. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0029] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0030] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0032] Before introducing the automobile balance beam of the present invention, the relevant terms are explained first:

[0033] All-terrain vehicles (ATVs) are vehicles that can travel on any terrain, easily maneuvering over terrain where ordinary vehicles would struggle. They are versatile and unrestricted by road conditions.

[0034] Balance beam: refers to the crossbeam structure used to install the front and rear wheels in an all-terrain off-road vehicle and keep the left and right wheels balanced in load.

[0035] Aluminum alloy profiles are an alloy primarily composed of aluminum. Aluminum bars are melted and then extruded through a mold of a specific shape to create a continuous aluminum structure with a specific, consistent cross-sectional shape along its length. Due to the advantages of the forming process, the cross-sectional shape of aluminum alloy profiles transcends the design limitations of conventional sheet metal structures. They can be designed to have open or closed cross-sections based on the load, without having to consider the connection design between individual sheet metal features. This offers unique advantages in lightweight structural design.

[0036] The following combination Figures 1-6 The specific structure and assembly method of the automobile balance beam of the utility model are described.

[0037] Figure 1Schematic diagram of the three-dimensional structure of the vehicle balance beam provided by the present utility model is illustrated. Figure 2 Schematic diagram of the exploded structure of the vehicle balance beam provided by the present utility model is illustrated, as Figure 1 and Figure 2 shown, the vehicle balance beam includes an intermediate joint 10 and two main beam bodies 20. The two main beam bodies 20 are respectively arranged on both sides of the intermediate joint 10 and are connected to the intermediate joint 10. The main beam body 20 is an alloy profile. In this embodiment, the main beam body 20 is an aluminum alloy profile. An internal partition 21 extending along the length direction of the main beam body 20 is provided inside the main beam body 20.

[0038] For the vehicle balance beam provided by the present utility model, by using an alloy profile as the main beam body 20, the cross-sectional size of the main beam body 20 can be set to a relatively large size on the premise of meeting the requirements of the spatial design boundary, so as to improve the torsional stiffness of the vehicle balance beam. By providing an internal partition 21 extending along the length direction of the main beam body 20 inside the main beam body 20, the stiffness of the vehicle balance beam is effectively improved.

[0039] In an embodiment of the present utility model, as Figure 2 shown, the structures of the two main beam bodies​​​​​​​​​​

[0042] In one embodiment of the present invention, Figure 4 Example Figure 3 The schematic diagram of the cross-section structure along the section line AA is as follows: Figure 2 and Figure 4 As shown, the side of the intermediate joint 10 facing the main beam 20 is provided with a first connecting portion 11, which is welded or integrally formed with the intermediate joint 10. The first connecting portion 11 is inserted between the two inner partitions 21. The height of the first connecting portion 11 is equal to or slightly less than the distance between the two inner partitions 21, so that the first connecting portion 11 inserted between the two inner partitions 21 can clamp the first connecting portion 11.

[0043] A first through hole 22 is provided at one end of the inner partition 21 near the intermediate joint 10. The first through holes 22 of the two inner partitions 21 are coaxially arranged and have the same inner diameter. A second through hole 12 is provided at the first connecting portion 11. Specifically, the second through hole 12 is located at the end of the first connecting portion 11 away from the intermediate joint 10. A third through hole 23 is provided at one end of the main beam 20 near the intermediate joint 10. The central axes of the first through hole 22, the second through hole 12, and the third through hole 23 are aligned. The automobile balance beam also includes bolts, the length of which is greater than the height of the main beam 20. The bolts are inserted into the first through hole 22, the second through hole 12, and the third through hole 23 and connected to the nuts. The end of the main beam 20 near the intermediate joint 10 is welded to the intermediate joint 10. The intermediate joint 10 and the main beam 20 are connected by bolts and welding, which improves the connection strength between the intermediate joint 10 and the main beam 20.

[0044] In one embodiment of the present invention, Figure 3 The schematic diagram of the top view of the automobile balance beam provided by the utility model is shown as follows: Figure 3 and Figure 4 As shown, a bolt connection sleeve 24 is disposed within the third through hole 23. The bolt connection sleeve 24 is coaxially arranged with the second through hole 12, is sleeved over a bolt, and is welded to the main beam 20. The provision of the bolt connection sleeve 24 within the third through hole 23 further strengthens the connection strength between the intermediate joint 10 and the main beam 20. Preferably, the inner diameter of the third through hole 23 is equal to the outer diameter of the bolt connection sleeve 24, and the outer diameter of the bolt connection sleeve 24 is greater than the diameter of the first through hole 22. After being inserted into the third through hole 23, the bolt connection sleeve 24 abuts against the inner partition 21, thereby further strengthening the connection strength between the intermediate joint 10 and the main beam 20.

[0045] In one embodiment of the present invention, Figure 5 The three-dimensional structural diagram of the intermediate joint provided by the present invention is illustrated as follows: Figure 2 and Figure 5 As shown, the cross-sectional width of the first connecting portion 11 gradually decreases as the first connecting portion 11 moves away from the intermediate joint 10. Because the second through hole 12 is located at the end of the first connecting portion 11 away from the intermediate joint 10, the second through hole 12 only occupies a very small space. If the remaining portion of the first connecting portion 11 away from the intermediate joint 10 were retained, the weight of the first connecting portion 11 would increase. By gradually decreasing the cross-sectional width of the first connecting portion 11 as the first connecting portion 11 moves away from the intermediate joint 10, only the portion where the second through hole 12 is located remains at the end of the first connecting portion 11 away from the intermediate joint 10, effectively reducing the weight of the first connecting portion 11. Furthermore, because the cross-sectional width of the first connecting portion 11 is greater at the end closer to the intermediate joint 10, the connection strength between the first connecting portion 11 and the intermediate joint 10 is effectively improved. Preferably, the cross-sectional width of the first connecting portion 11 is triangular or trapezoidal.

[0046] It should be noted that the cross section of the first connecting portion 11 refers to a cross section perpendicular to the height direction of the first connecting portion 11, that is, Figure 5 The cross section made in the horizontal direction.

[0047] In one embodiment of the present invention, Figure 2 As shown, the first connecting portion 11 is provided with two weight-reducing holes 25. Of course, the number of weight-reducing holes 25 is not limited to this number and is determined by the size of the first connecting portion 11. The weight-reducing holes 25 are located between the second through hole 12 and the middle joint 10, that is, the weight-reducing holes 25 are located at the root of the first connecting portion 11. The two weight-reducing holes 25 are spaced apart along the width direction of the main beam body 20.

[0048] Due to the increased cross-sectional dimensions of the main beam 20 and the effective connection between the internal partition and the intermediate joint 10, the stiffness and strength of the balance beam are effectively improved. Simulation calculation results show that the vertical stiffness of the automotive balance beam of the present invention is increased by 25.8%, the longitudinal stiffness is increased by 9.9%, and the axial torsional stiffness of the balance beam is increased by 27.0% compared to the balance beam of the prior art. At the same time, under the corresponding operating conditions, the structural stress is reduced by 16.4%, 36.0%, and 51.7%, respectively, with a significant performance improvement. With this performance improvement, the structural mass of the automotive balance beam of the present invention is reduced from 6.34kg to 3.87kg, a weight reduction of 2.47kg (-38.9%), fully achieving the design goal of lightweight structure.

[0049] In one embodiment of the present invention, the automobile balance beam further includes two side joints 30. The two side joints 30 have identical structures, facilitating interchangeability during installation and reducing the difficulty of installing the automobile balance beam. The two side joints 30 are disposed one-to-one at the ends of the two main beams 20 that are distal to the intermediate joint 10. The ends of the side joints 30 that are distal to the main beams 20 are provided with connection holes.

[0050] In a preferred embodiment of the present invention, a second connecting portion 31 is provided at one end of the side joint 30 near the main beam 20. The second connecting portion 31 is welded or integrally formed with the side joint 30. The second connecting portion 31 is inserted between the two inner partitions 21. The height of the second connecting portion 31 is equal to or slightly less than the distance between the two inner partitions 21, so that the second connecting portion 31 can be inserted between the two inner partitions 21 to clamp the second connecting portion 31.

[0051] A first connection hole 32 is provided at one end of the inner partition 21 close to the side joint 30. The first connection holes 32 of the two inner partitions 21 are coaxially arranged and have the same inner diameter. A second connection hole 33 is provided at the second connection portion 31. Specifically, the second connection hole 33 is located at the end of the second connection portion 31 away from the side joint 30. A third connection hole 34 is provided at one end of the main beam body 20 close to the side joint 30. The central axes of the first connection hole 32, the second connection hole 33 and the third connection hole 34 are in the same straight line. Bolts are passed through the first connection hole 32, the second connection hole 33 and the third connection hole 34, and the end of the main beam body 20 close to the side joint 30 is welded to the side joint 30. The side joint 30 and the main beam body 20 are connected by bolts and welding, which improves the connection strength between the side joint 30 and the main beam body 20.

[0052] In one embodiment of the present invention, a bolt connection sleeve 24 is disposed within the third connection hole 34. The bolt connection sleeve 24 is coaxially arranged with the second connection hole 33, fits over a bolt, and is welded to the sidewall of the main beam 20. The placement of the bolt connection sleeve 24 within the third connection hole 34 further strengthens the connection between the side joint 30 and the main beam 20. Preferably, the inner diameter of the third connection hole 34 is equal to the outer diameter of the bolt connection sleeve 24. After being inserted into the third connection hole 34, the bolt connection sleeve 24 abuts against the inner partition 21, further strengthening the connection between the side joint 30 and the main beam 20.

[0053] In one embodiment of the present invention, the cross-sectional width of the second connection portion 31 gradually decreases as the second connection portion 31 moves away from the side joint 30. Because the second connection hole 33 is located at the end of the second connection portion 31 away from the side joint 30, the second connection hole 33 only occupies a very small space. If the other portion of the second connection portion 31 away from the side joint 30 is retained, the weight of the second connection portion 31 will increase. By gradually decreasing the cross-sectional width of the second connection portion 31 as the second connection portion 31 moves away from the side joint 30, only the area for the second connection hole 33 is left at the end of the second connection portion 31 away from the side joint 30, effectively reducing the weight of the second connection portion 31. At the same time, because the cross-sectional width of the second connection portion 31 is larger at the end near the side joint 30, the connection strength between the second connection portion 31 and the side joint 30 is effectively improved. Preferably, the cross-sectional shape of the second connection portion 31 is triangular or trapezoidal.

[0054] In one embodiment of the present invention, the second connecting portion 31 is provided with two weight-reducing holes 25. Of course, the number of weight-reducing holes 25 is not limited to this number and is determined by the size of the second connecting portion 31. The weight-reducing holes 25 are located between the second connecting hole 33 and the side joint 30, that is, the weight-reducing holes 25 are located at the root of the second connecting portion 31. The two weight-reducing holes 25 are spaced apart along the width direction of the main beam 20.

[0055] In one embodiment of the present invention, both main beams 20 are provided with an accessory connector 26. Specifically, the accessory connector 26 is a tubular structure. Both the main beam 20 and the inner partition 21 are provided with mounting holes. The inner diameter of the mounting holes matches the outer diameter of the accessory connector 26. The accessory connector 26 is inserted into the mounting holes of the main beam 20 and the inner partition 21 and welded to the side wall of the main beam 20.

[0056] The assembly method of the automobile balance beam of the utility model:

[0057] First, insert the bolt connection sleeve 24 into the third through-hole 23 of the main beam 20, with the inner end of the bolt connection sleeve 24 contacting the inner partition 21. Then, weld the outer end of the bolt connection sleeve 24 to the edge of the third through-hole 23 using a weld seam. Next, insert the first connection portion 11 of the intermediate joint 10 between the two inner partitions 21, ensuring that the side surface of the intermediate joint 10 aligns with the cross-section of the main beam 20 and that the second through-hole 12 aligns with the third through-hole 23 of the main beam 20. Weld the seam between the intermediate joint 10 and the main beam 20. After completing these connections, insert bolts that pass through the upper and lower bolt connection sleeves 24 and connect them with nuts. Finally, insert the accessory connector 26 into the mounting holes between the main beam 20 and the inner partition 21 and weld it to the side wall of the main beam 20. The installation method for the side joint 30 is similar to that of the intermediate joint 10 and will not be described in detail here.

[0058] The automobile balance beam provided by the present invention adopts an alloy profile as the main beam body 20. The cross-sectional size of the main beam body 20 can be set to a larger cross-sectional size while meeting the spatial design boundary requirements to improve the torsional stiffness of the automobile balance beam. By arranging an inner partition 21 extending along the length direction of the main beam body 20 inside the main beam body 20, the stiffness of the automobile balance beam is effectively improved.

[0059] The automotive balance beam provided by this utility model achieves the high stiffness and strength requirements of all-terrain off-road vehicles with a lightweight structure. Compared with existing designs, it significantly improves stiffness and strength while significantly reducing structural weight and costs.

[0060] The utility model also provides an automobile, which comprises an automobile body and the automobile balance beam described in any one of the above embodiments, wherein the automobile balance beam is arranged on the automobile body.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An automobile balance beam, characterized in that: include: Middle joint (10); Two main beams (20), the two main beams (20) are respectively arranged on both sides of the middle joint (10) and connected to the middle joint (10), the main beams (20) are alloy profiles, and an inner partition (21) extending along the length direction of the main beam (20) is arranged inside the main beam (20).

2. The automobile balance beam according to claim 1, characterized in that: Two inner partitions (21) are provided inside the main beam body (20), and the two inner partitions (21) are spaced apart along the height direction of the main beam body (20).

3. The automobile balance beam according to claim 1, characterized in that: The thickness of the inner partition plate (21) is smaller than the thickness of the side wall of the main beam body (20).

4. The automobile balance beam according to claim 1, characterized in that: The invention also includes a bolt, wherein the middle joint (10) is provided with a first connecting portion (11) on the side facing the main beam body (20), the first connecting portion (11) is inserted between the two inner partitions (21), the inner partitions (21) are provided with a first through hole (22) at one end close to the middle joint (10), the first connecting portion (11) is provided with a second through hole (12), the main beam body (20) is provided with a third through hole (23) at one end close to the middle joint (10), the bolt is passed through the first through hole (22), the second through hole (12) and the third through hole (23), and the end of the main beam body (20) close to the middle joint (10) is welded to the middle joint (10).

5. The automobile balance beam according to claim 4, characterized in that: A bolt connection sleeve (24) is provided in the third through hole (23); the bolt connection sleeve (24) is sleeved on the bolt and welded to the main beam body (20).

6. The automobile balance beam according to claim 4 or 5, characterized in that: The cross-sectional width of the first connecting portion (11) gradually decreases in a direction from the first connecting portion (11) away from the middle joint (10).

7. The automobile balance beam according to claim 4 or 5, characterized in that: The first connecting portion (11) is provided with a weight-reducing hole (25).

8. The automobile balance beam according to any one of claims 1 to 5, characterized in that: Also includes: Two side joints (30), the two side joints (30) are arranged in a one-to-one correspondence at one end of the two main beam bodies (20) away from the middle joint (10).

9. The automobile balance beam according to any one of claims 1 to 5, characterized in that: Both main beam bodies (20) are provided with accessory connecting pieces (26).

10. An automobile, characterized in that: The invention comprises an automobile body and the automobile balance beam according to any one of claims 1 to 9, wherein the automobile balance beam is arranged on the automobile body.

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