Swing arm device of vehicle and vehicle

By reasonably setting reinforcement ribs in the swing arm device of the vehicle, the problems of complex and insufficient strength of the swing arm in the prior art are solved, structural strength improvement and manufacturing process simplification, and vehicle reliability is improved.

CN222591150UActive Publication Date: 2025-03-11BYD CO LTD
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Patent Information

Application Number
CN202420212996.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-01-26
Publication Date
2025-03-11
Estimated Expiration
2034-01-26

AI Technical Summary

Technical Problem

The swing arm structure of existing vehicles is complex, which increases the production process and manufacturing cost, and has small structural strength and poor reliability.

Method used

A vehicle swing arm device is designed, which includes a swing arm main body and a plurality of reinforcing ribs. By reasonably setting the reinforcing ribs, the structural strength of the swing arm main body is enhanced and the manufacturing process is simplified.

Benefits of technology

The structural strength of the swing arm device is improved and the manufacturing process is simplified, the production cost is reduced, and the overall structural reliability of the vehicle is improved.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a swing arm device of a vehicle and the vehicle, the swing arm device of the vehicle comprises a swing arm main body, the swing arm main body comprises a first boundary, a second boundary and a third boundary; the reinforcing ribs comprise the first reinforcing ribs, the second reinforcing ribs and the third reinforcing ribs, any two of the first boundary, the second boundary and the third boundary are connected through the first reinforcing ribs, the second reinforcing ribs are round, and the first boundary, the second boundary and the third boundary are arranged at intervals. The third reinforcing rib is arranged on the outer side of the second reinforcing rib, one end of the third reinforcing rib is connected with the second reinforcing rib, and the other end of the third reinforcing rib is connected with the first boundary, the second boundary and the third boundary. Therefore, the reinforcing ribs are reasonably arranged in the swing arm main body, so that the layout of the reinforcing ribs is more reasonable, the structural strength of the swing arm device can be ensured, the manufacturing process of the swing arm device can be simplified, and the production and manufacturing of the swing arm device are facilitated.
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Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a swing arm device of a vehicle and the vehicle. Background Art

[0002] With the development of science and technology and the improvement of people's living standards, vehicles have gradually become popular in people's lives. Among them, the swing arm on the front suspension of the vehicle is an important component in the vehicle.

[0003] In the prior art, the swing arm structure of a vehicle is relatively complex, which not only increases the production process of the swing arm and increases the manufacturing cost, but is also not conducive to the lightweight of the swing arm and will increase the weight of the vehicle. In addition, the structural strength of the vehicle's swing arm is relatively small, and the structural reliability of the swing arm is relatively poor. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a swing arm device for a vehicle, which has a simple structure and greater structural strength.

[0005] The utility model further provides a vehicle.

[0006] According to an embodiment of the utility model, the swing arm device of a vehicle includes: a swing arm body, the swing arm body includes a first boundary, a second boundary and a third boundary, the first boundary, the second boundary and the third boundary are connected in sequence in the circumferential direction; reinforcing ribs, the reinforcing ribs are multiple and include a first reinforcing rib, a second reinforcing rib and a third reinforcing rib, any two of the first boundary, the second boundary and the third boundary are connected by the first reinforcing rib, the second reinforcing rib is circular and is spaced apart from the first boundary, the second boundary and the third boundary respectively, the third reinforcing rib is arranged on the outside of the second reinforcing rib and one end is connected to the second reinforcing rib, and the other end of the third reinforcing rib is connected to the first boundary, the second boundary and the third boundary respectively.

[0007] Therefore, by reasonably arranging reinforcing ribs in the swing arm body, the layout of the reinforcing ribs can be made more reasonable, which can not only ensure the structural strength of the swing arm device, but also simplify the manufacturing process of the swing arm device and facilitate the production of the swing arm device.

[0008] According to some embodiments of the present utility model, at least one of the first reinforcing ribs is connected between the first boundary and the second boundary, at least one of the first reinforcing ribs is connected between the first boundary and the third boundary, and at least one of the first reinforcing ribs is connected between the second boundary and the third boundary.

[0009] According to some embodiments of the utility model, the third reinforcing ribs are multiple and are circumferentially spaced apart on the outer side of the second reinforcing ribs, at least one of the third reinforcing ribs is connected to the first boundary, at least one of the third reinforcing ribs is connected to the second boundary, and at least one of the third reinforcing ribs is connected to the third boundary.

[0010] According to some embodiments of the present utility model, a plurality of the first reinforcing ribs enclose a reinforced space in the swing arm body, and the second reinforcing ribs and the third reinforcing ribs are located in the reinforced space.

[0011] According to some embodiments of the utility model, the reinforcing rib is integrally extruded with the swing arm body.

[0012] According to some embodiments of the present invention, at least one of the first boundary, the second boundary and the third boundary is arc-shaped.

[0013] According to some embodiments of the present invention, a steering knuckle mounting hole is arranged between the first end of the first boundary and the first end of the second boundary, a subframe front mounting hole is arranged between the second end of the first boundary and the third boundary, and a subframe rear mounting hole is arranged between the second end of the second boundary and the third boundary.

[0014] According to some embodiments of the present utility model, the plane where the swing arm body is located is set as a horizontal plane, and the direction perpendicular to the horizontal plane is set as a vertical direction. The steering knuckle mounting hole penetrates the swing arm body in the vertical direction, and at least one of the sub-frame front mounting hole and the sub-frame rear mounting hole penetrates the swing arm body in the vertical direction.

[0015] According to some embodiments of the present utility model, the plane where the swing arm body is located is set as a horizontal plane, and the direction perpendicular to the horizontal plane is set as a vertical direction. The steering knuckle mounting hole penetrates the swing arm body in the vertical direction, and at least one of the sub-frame front mounting hole and the sub-frame rear mounting hole penetrates the swing arm body in the horizontal direction.

[0016] According to some embodiments of the present invention, the steering knuckle mounting hole is a round hole or a square hole; and / or the sub-frame front mounting hole is a round hole or a square hole; and / or the sub-frame rear mounting hole is a round hole or a square hole.

[0017] A vehicle according to an embodiment of the utility model includes: the swing arm device of the vehicle described above.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a schematic diagram of a swing arm device of a vehicle according to an embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of a swing arm device of a vehicle according to an embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of a swing arm device of a vehicle in another embodiment of the utility model;

[0023] Figure 4 It is a schematic diagram of a swing arm device of a vehicle in another embodiment of the utility model;

[0024] Figure 5 It is a schematic diagram of a swing arm device of a vehicle according to another embodiment of the utility model.

[0025] Reference numerals:

[0026] 100. Swing arm device;

[0027] 10. Swing arm body; 11. First boundary; 12. Second boundary; 13. Third boundary; 14. Steering knuckle mounting hole; 15. Subframe front mounting hole; 16. Subframe rear mounting hole;

[0028] 20. Reinforcement rib; 21. First reinforcement rib; 24. Second reinforcement rib; 25. Third reinforcement rib; 26. Reinforcement space. DETAILED DESCRIPTION

[0029] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0030] Reference below Figure 1-Figure 5 The swing arm device 100 for a vehicle according to an embodiment of the present invention is described, and the swing arm device 100 for a vehicle can be applied to a vehicle.

[0031] Combination Figure 1-Figure 5As shown, the swing arm device 100 of a vehicle according to an embodiment of the utility model may mainly include: a swing arm body 10 and a reinforcing rib 20, wherein the swing arm body 10 includes a first boundary 11, a second boundary 12 and a third boundary 13, the first boundary 11, the second boundary 12 and the third boundary 13 are connected in sequence, the reinforcing rib 20 is multiple and includes a first reinforcing rib 21, a second reinforcing rib 24 and a third reinforcing rib 25, any two of the first boundary 11, the second boundary 12 and the third boundary 13 are connected by the first reinforcing rib 21, the second reinforcing rib 24 is circular and is spaced apart from the first boundary 11, the second boundary 12 and the third boundary 13 respectively, the third reinforcing rib 25 is arranged on the outside of the second reinforcing rib 24 and one end is connected to the second reinforcing rib 24, and the other end of the third reinforcing rib 25 is connected to at least one of the first boundary 11, the second boundary 12 and the third boundary 13.

[0032] Specifically, the first end of the first boundary 11 and the first end of the second boundary 12 are connected, and the distance between the first boundary 11 and the second boundary 12 is gradually increased in the direction away from the first end of the first boundary 11 or the first end of the second boundary 12, that is, the first boundary 11 and the second boundary 12 can be gradually separated in the direction away from the first end of the first boundary 11 or the first end of the second boundary 12, and the third boundary 13 is connected between the second end of the first boundary 11 and the second end of the second boundary 12. This not only ensures the structural reliability of the swing arm body 10, but also simplifies the structural design of the swing arm body 10.

[0033] Furthermore, a plurality of reinforcing ribs 20 are provided, and the plurality of reinforcing ribs 20 include a first reinforcing rib 21, a second reinforcing rib 24 and a third reinforcing rib 25, and any two of the first boundary 11, the second boundary 12 and the third boundary 13 are connected by the first reinforcing rib 21, that is, the first reinforcing rib 21 is connected between the first boundary 11 and the second boundary 12, the first reinforcing rib 21 is connected between the first boundary 11 and the third boundary 13, and the first reinforcing rib 21 is connected between the second boundary 12 and the third boundary 13, so that the structural strength of the swing arm body 10 can be improved, thereby improving the structural reliability of the swing arm body 10.

[0034] Combination Figure 1-Figure 5 As shown, the second reinforcing rib 24 is circular and is spaced apart from the first boundary 11, the second boundary 12 and the third boundary 13 respectively. The third reinforcing rib 25 is arranged on the outer side of the second reinforcing rib 24 and one end is connected to the second reinforcing rib 24. The other end of the third reinforcing rib 25 is connected to the first boundary 11, the second boundary 12 and the third boundary 13 respectively.

[0035] Specifically, the second reinforcing rib 24 is arranged in a circular shape, and is spaced apart from the first boundary 11, the second boundary 12 and the third boundary 13 respectively; the third reinforcing rib 25 is arranged on the outer side of the second reinforcing rib 24, and one end of the third reinforcing rib 25 is connected to the second reinforcing rib 24, and the other end of the third reinforcing rib 25 is connected to the first boundary 11, the second boundary 12 and the third boundary 13 respectively, so that the second reinforcing rib 24 plays a role in structural reinforcement of the swing arm body 10. Such an arrangement can not only further enhance the structural reinforcement effect of the reinforcing rib 20 on the swing arm body 10, but also make the structural distribution of the plurality of reinforcing ribs 20 more reasonable, thereby further enhancing the structural strength of the swing arm body 10.

[0036] Combination Figure 1-Figure 5 As shown, at least one first reinforcing rib 21 is connected between the first boundary 11 and the second boundary 12, at least one first reinforcing rib 21 is connected between the first boundary 11 and the third boundary 13, and at least one first reinforcing rib 21 is connected between the second boundary 12 and the third boundary 13. In this way, not only can the first boundary 11, the second boundary 12 and the third boundary 13 be able to transmit force to each other, but the first reinforcing rib 21 can also support the first boundary 11, the second boundary 12 and the third boundary 13. Such an arrangement can not only improve the structural strength of the swing arm device 100, but also simplify the structure of the swing arm device 100, which can facilitate the production and manufacturing of the swing arm device 100.

[0037] Combination Figure 1-Figure 5 As shown, there are multiple third reinforcing ribs 25 and they are arranged at intervals in the circumferential direction on the outer side of the second reinforcing rib 24, at least one third reinforcing rib 25 is connected to the first boundary 11, at least one third reinforcing rib 25 is connected to the second boundary 12, and at least one third reinforcing rib 25 is connected to the third boundary 13. Specifically, the third reinforcing ribs 25 are arranged in multiple numbers, and the multiple third reinforcing ribs 25 are arranged at intervals in the circumferential direction on the outer side of the second reinforcing rib 24, at least one third reinforcing rib 25 is connected to the first boundary 11, at least one third reinforcing rib 25 is connected to the second boundary 12, and at least one third reinforcing rib 25 is connected to the third boundary 13, so that the connection between the second reinforcing rib 24 and the first boundary 11, the second boundary 12 and the third boundary 13 can be more tightly and reliably made, so that the structural reliability of the swing arm body 10 can be further improved.

[0038] In some embodiments of the present invention, there are three third reinforcing ribs 25 , which are evenly spaced circumferentially outside the second reinforcing rib 24 , and are respectively connected to the first boundary 11 , the second boundary 12 , and the third boundary 13 .

[0039] Combination Figure 1-Figure 5As shown, the first reinforcing rib 21, the second reinforcing rib 24 and the third reinforcing rib 25 enclose a reinforcing space 26 in the swing arm body 10, and the second reinforcing rib 24 and the third reinforcing rib 25 are located in the reinforcing space 26. Specifically, the first reinforcing rib 21, the second reinforcing rib 24, the third reinforcing rib 25, the first boundary 11, the second boundary 12 and the third boundary 13 jointly define the reinforcing space 26, and the second reinforcing rib 24 and the third reinforcing rib 25 are both arranged in the reinforcing space 26, which not only makes the arrangement of the plurality of reinforcing ribs 20 in the swing arm body 10 more reasonable, can improve the overall structural strength of the swing arm device 100, but also makes the structure of the swing arm device 100 simple, and facilitates the production and manufacturing of the swing arm device 100.

[0040] Combination Figure 1 As shown, the reinforcing rib 20 and the swing arm body 10 are extruded integrally. This not only facilitates the production of the swing arm device 100 and reduces the production cost of the swing arm device 100, but also makes the structure of the swing arm device 100 simpler, thereby making the swing arm device 100 lighter.

[0041] Combination Figure 1-Figure 5 As shown, in some embodiments of the utility model, at least one of the first boundary 11, the second boundary 12 and the third boundary 13 is arc-shaped. Such a configuration can make the structure of the first boundary 11, the second boundary 12 and the third boundary 13 more compact while ensuring the structural stability of the swing arm body 10, thereby further improving the structural strength of the swing arm body 10.

[0042] In some embodiments of the present invention, the first boundary 11, the second boundary 12 and the third boundary 13 are all in the shape of straight plates. With this arrangement, the swing arm body 10 is triangular as a whole, which can make the structure of the swing arm body 10 more stable, thereby improving the structural reliability of the swing arm body 10.

[0043] Combination Figure 1-Figure 5As shown, a knuckle mounting hole 14 is provided between the first end of the first boundary 11 and the first end of the second boundary 12, a subframe front mounting hole 15 is provided between the second end of the first boundary 11 and the third boundary 13, and a subframe rear mounting hole 16 is provided between the second end of the second boundary 12 and the third boundary 13. Specifically, by providing the knuckle mounting hole 14 between the first end of the first boundary 11 and the first end of the second boundary 12, the knuckle mounting hole 14 is used to install the knuckle. Since a plurality of reinforcing ribs 20 are provided in the swing arm body 10, the knuckle mounting hole 14 is closer to the reinforcing ribs 20, and the reinforcing ribs 20 have a better structural reinforcement effect on the knuckle mounting hole 14, so that the stability and firmness of the knuckle mounting hole 14 when installing the knuckle can be improved, thereby improving the structural reliability of the swing arm device 100 in the vehicle.

[0044] It should be noted that the steering knuckle mounting hole 14, the subframe front mounting hole 15 and the subframe rear mounting hole 16 are extruded integrally with the swing arm body 10 and the reinforcing rib 20, which can further reduce the difficulty of manufacturing the swing arm device 100, thereby improving the production efficiency of the swing arm device 100.

[0045] Furthermore, by arranging a sub-frame front mounting hole 15 between the second end of the first boundary 11 and the third boundary 13, and arranging a sub-frame rear mounting hole 16 between the second end of the second boundary 12 and the third boundary 13, the sub-frame front mounting hole 15 and the sub-frame rear mounting hole 16 can be used to install the sub-frame. Since a plurality of reinforcing ribs 20 are arranged in the swing arm body 10, the sub-frame front mounting hole 15 and the sub-frame rear mounting hole 16 are both close to the reinforcing ribs 20. The reinforcing ribs 20 have a better structural reinforcement effect on the sub-frame front mounting hole 15 and the sub-frame rear mounting hole 16. In this way, the stability and firmness of the sub-frame front mounting hole 15 and the sub-frame rear mounting hole 16 when installing the sub-frame can be improved, thereby improving the structural reliability of the swing arm device 100.

[0046] Combination Figure 1 , Figure 2 and Figure 4As shown, in other embodiments of the present invention, the plane where the swing arm body 10 is located is set as a horizontal plane, and the direction perpendicular to the horizontal plane is set as a vertical direction. The steering knuckle mounting hole 14 penetrates the swing arm body 10 in the vertical direction, and at least one of the sub-frame front mounting hole 15 and the sub-frame rear mounting hole 16 penetrates the swing arm body 10 in the vertical direction. Specifically, the steering knuckle mounting hole 14 penetrates the swing arm body 10 in the vertical direction, and at least one of the sub-frame front mounting hole 15 and the sub-frame rear mounting hole 16 penetrates the swing arm body 10 in the vertical direction. It should be noted that the steering knuckle mounting hole 14, the sub-frame front mounting hole 15 and the sub-frame rear mounting hole 16 are all generated at the same time as the swing arm device 100 is extruded and formed. In this way, the production process of the swing arm device 100 can be further simplified under the premise of ensuring that the swing arm device 100 is stably and reliably connected and fixed to the steering knuckle and the sub-frame, so that the production of the swing arm device 100 can be further facilitated.

[0047] Combination Figure 3 and Figure 5 As shown, in other embodiments of the present invention, the plane where the swing arm body 10 is located is set as a horizontal plane, and the direction perpendicular to the horizontal plane is set as a vertical direction. The steering knuckle mounting hole 14 penetrates the swing arm body 10 in the vertical direction, and at least one of the sub-frame front mounting hole 15 and the sub-frame rear mounting hole 16 penetrates the swing arm body 10 in the horizontal direction. Specifically, the steering knuckle mounting hole 14 penetrates the swing arm body 10 in the vertical direction, and at least one of the sub-frame front mounting hole 15 and the sub-frame rear mounting hole 16 penetrates the swing arm body 10 in the horizontal direction, so that the swing arm device 100 can be suitable for installing different sub-frames, thereby improving the applicability of the swing arm device 100.

[0048] It should be noted that the plane where the swing arm body 10 is located is assumed to be a horizontal plane, and the direction that is at an angle with the horizontal plane is a non-horizontal direction, wherein the direction perpendicular to the horizontal plane is a vertical direction; the directions that are not at an angle with the horizontal plane are all horizontal directions. Therefore, there are multiple horizontal directions, not just a single direction. Figure 3 The two horizontal directions shown in are merely the horizontal directions through which the front mounting holes 15 of the sub-frame and the rear mounting holes 16 of the sub-frame penetrate. When the front mounting holes 15 of the sub-frame and the rear mounting holes 16 of the sub-frame penetrate the swing arm body in the horizontal direction, the horizontal directions through which the front mounting holes 15 of the sub-frame and the rear mounting holes 16 of the sub-frame can be selectively adjusted according to the installation positions of different sub-frames and the swing arm device, thereby further improving the applicability of the swing arm device 100.

[0049] Combination Figure 4 and Figure 5As shown, the steering knuckle mounting hole 14 is a round hole or a square hole, and / or the subframe front mounting hole 15 is a round hole or a square hole, and / or the subframe rear mounting hole 16 is a round hole or a square hole. In this way, the shapes of the steering knuckle mounting hole 14, the subframe front mounting hole 15 and the subframe rear mounting hole 16 can be selectively set according to the process requirements of the steering knuckle and the subframe, which can further improve the applicability of the swing arm device 100.

[0050] The vehicle according to the embodiment of the utility model may mainly include the above-mentioned vehicle swing arm device 100. Applying the above-mentioned vehicle swing arm device 100 to the vehicle can not only simplify the structural design of the vehicle and make the vehicle lighter, but also improve the structural reliability of the vehicle, thereby improving the user experience of the vehicle.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", 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 utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0053] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A swing arm device for a vehicle, characterized in that: include: A swing arm body, the swing arm body comprising a first boundary, a second boundary and a third boundary, wherein the first boundary, the second boundary and the third boundary are sequentially connected in a circumferential direction; Reinforcing ribs, the reinforcing ribs are multiple and include a first reinforcing rib, a second reinforcing rib and a third reinforcing rib, any two of the first boundary, the second boundary and the third boundary are connected by the first reinforcing rib, the second reinforcing rib is circular and is spaced apart from the first boundary, the second boundary and the third boundary respectively, the third reinforcing rib is arranged on the outside of the second reinforcing rib and one end is connected to the second reinforcing rib, and the other end of the third reinforcing rib is connected to the first boundary, the second boundary and the third boundary respectively.

2. The swing arm device of a vehicle according to claim 1, characterized in that: At least one of the first reinforcing ribs is connected between the first boundary and the second boundary, at least one of the first reinforcing ribs is connected between the first boundary and the third boundary, and at least one of the first reinforcing ribs is connected between the second boundary and the third boundary.

3. The swing arm device of a vehicle according to claim 2, characterized in that: There are multiple third reinforcing ribs and they are circumferentially spaced apart on the outer side of the second reinforcing rib. At least one third reinforcing rib is connected to the first boundary, at least one third reinforcing rib is connected to the second boundary, and at least one third reinforcing rib is connected to the third boundary.

4. The swing arm device of a vehicle according to claim 2, characterized in that: The plurality of first reinforcing ribs enclose a reinforcing space in the swing arm body, and the second reinforcing ribs and the third reinforcing ribs are located in the reinforcing space.

5. The swing arm device of a vehicle according to claim 1, characterized in that: The reinforcing rib is integrally extruded with the swing arm body.

6. The swing arm device of a vehicle according to claim 1, characterized in that: At least one of the first boundary, the second boundary, and the third boundary is in an arc shape.

7. The swing arm device of a vehicle according to claim 1, characterized in that: A steering knuckle mounting hole is provided between the first end of the first boundary and the first end of the second boundary, a subframe front mounting hole is provided between the second end of the first boundary and the third boundary, and a subframe rear mounting hole is provided between the second end of the second boundary and the third boundary.

8. The swing arm device of a vehicle according to claim 7, characterized in that: The plane where the swing arm body is located is set as a horizontal plane, and the direction perpendicular to the horizontal plane is set as a vertical direction. The steering knuckle mounting hole penetrates the swing arm body in the vertical direction, and at least one of the sub-frame front mounting hole and the sub-frame rear mounting hole penetrates the swing arm body in the vertical direction.

9. The swing arm device of a vehicle according to claim 7, characterized in that: The plane where the swing arm body is located is set as a horizontal plane, the direction perpendicular to the horizontal plane is set as a vertical direction, and the direction in the horizontal plane is set as a horizontal direction. The steering knuckle mounting hole penetrates the swing arm body in the vertical direction, and at least one of the sub-frame front mounting hole and the sub-frame rear mounting hole penetrates the swing arm body in the horizontal direction.

10. The swing arm device of a vehicle according to claim 7, characterized in that: The steering knuckle mounting hole is a round hole or a square hole; and / or the front mounting hole of the sub-frame is a round hole or a square hole; and / or the rear mounting hole of the sub-frame is a round hole or a square hole.

11. A vehicle, characterized in that: include: The swing arm device of a vehicle according to any one of claims 1 to 10.