A fender assembly and motorcycle

By designing a detachable upper and lower skid plate structure, the problem of inconvenient maintenance of motorcycle skid plates is solved, wind resistance and wind noise are reduced, and maintenance efficiency and aesthetics are improved.

CN224409487UActive Publication Date: 2026-06-26SUPER UNIVERSE (CHONGQING) AUTO IND TECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUPER UNIVERSE (CHONGQING) AUTO IND TECHNOLOGY CO LTD
Filing Date
2025-08-29
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

The existing motorcycle skid plate structure is a one-piece design, which means that the entire skid plate needs to be removed when repairing the wheel hub or other obstructed parts. This is inconvenient for daily maintenance, and the uneven surface shape leads to increased wind resistance and wind noise.

Method used

The protective panel assembly is designed to include a removable upper and lower protective panel connected by a snap-fit ​​mechanism, with a smooth surface transition. It features an inner lining mechanism and brackets to enhance stability and facilitate disassembly, and the luminaire is connected via threaded fasteners.

Benefits of technology

It enables convenient disassembly and maintenance of the guard plate, reduces wind resistance and wind noise, improves maintenance efficiency, and reduces energy consumption.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to motorcycle technical field, concretely relates to a guard plate subassembly and motorcycle, the utility model provides a guard plate subassembly, including frame, car body and guard plate structure, the car body is installed on the frame, the guard plate structure includes two upper guard plates and two lower guard plates, the upper guard plate with the lower guard plate one -to -one corresponds, two upper guard plates are installed respectively in the both sides of car body, two lower guard plates are installed respectively in the both sides of car body, and the upper guard plate is higher than the lower guard plate, the outside of upper guard plate is curved surface, the outside of lower guard plate is curved surface, the outside of upper guard plate and the outside of corresponding lower guard plate smooth transition, because detachable between lower guard plate and upper guard plate, and not design into integral type, thus, when routine maintenance, select separate lower guard plate and thus facilitate the routine most maintenance work, do not need to disassemble the whole guard plate structure.
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Description

Technical Field

[0001] This utility model relates to the field of motorcycle technology, specifically to a skid plate assembly and a motorcycle. Background Technology

[0002] Motorcycle body panels are a type of covering that directly reflects the appearance of a motorcycle. They protect the outer shell of internal components, fix and limit the movement of parts, and enhance the motorcycle's aesthetics.

[0003] The existing motorcycle skid plates are basically one-piece structures. When it is necessary to repair the wheel hub or other obstructed parts, the entire skid plate structure can only be removed, which is inconvenient for daily maintenance. In addition, the existing motorcycle skid plates also have the problem of uneven surface shape, which will lead to increased wind resistance and wind noise during driving. Utility Model Content

[0004] (a) The problem that this utility model aims to solve is that the existing motorcycle skid plate structure is basically an integrated structure. When it is necessary to repair the wheel hub or other parts that are blocked by the skid plate, the skid plate structure in the entire vehicle body can only be disassembled, which is inconvenient for daily maintenance.

[0005] (II) Technical Solution

[0006] A skid plate assembly for a motorcycle, the motorcycle including a body and a frame, the body being mounted on the frame, the skid plate assembly including a skid plate structure, the skid plate structure including two upper skid plates and two lower skid plates, the upper skid plates and the lower skid plates corresponding one-to-one, the two upper skid plates being respectively mounted on both sides of the body, the two lower skid plates being respectively mounted on both sides of the body, and the upper skid plates being higher than the lower skid plates;

[0007] The outer side of the upper guard plate is curved, and the outer side of the lower guard plate is curved. The outer side of the upper guard plate and the corresponding outer side of the lower guard plate are smoothly transitioned. The upper guard plate and the corresponding lower guard plate are detachably connected by a snap-fit ​​mechanism.

[0008] According to one embodiment of the present invention, the buckling mechanism includes buckles and slots. The bottom of the upper guard plate is provided with a bottom side plate, and the bottom side plate is provided with a plurality of slots. The inner side of the lower guard plate is provided with a plurality of buckles that correspond one-to-one with the slots near its top.

[0009] According to one embodiment of the present invention, two sets of inner lining mechanisms are included, which are respectively installed on both sides of the vehicle body. The inner lining mechanism includes a front inner lining and a rear inner lining. The front inner lining and the rear inner lining are arranged sequentially along the front-rear direction of the vehicle body. The front inner lining is fixed to the rear of the vehicle body, and the rear inner lining is connected to the front inner lining by threaded fasteners.

[0010] According to one embodiment of the present invention, the inner edge of the upper guard plate is provided with an upper guard edge, and the inner edge of the lower guard plate is provided with a lower guard edge, the upper guard edge and the lower guard edge being aligned with each other.

[0011] According to one embodiment of the present invention, the bottom side plate is located inside the corresponding lower guard plate.

[0012] A motorcycle includes a skid plate assembly and two lamps corresponding to the inner liner mechanism. The lamps are positioned above the front and rear inner liners of the inner liner mechanism, and the front and rear inner liners are connected to the lamps by threaded fasteners.

[0013] According to one embodiment of the present invention, it includes two supports, one of which is installed on each of the inner lining mechanisms, and the supports are disposed on the outside of the inner lining mechanism;

[0014] The bracket is detachably connected to the front liner, the lamps, and the vehicle frame.

[0015] According to one embodiment of the present invention, the bracket includes a first rod, a second rod, and at least one connecting rod. The connecting rod is fixed between the first rod and the second rod. The first ends of the first rod and the second rod are both fixedly connected to the vehicle frame by threaded fasteners. The second end of the first rod is connected to the front inner liner and the lamp by threaded fasteners. The second end of the second rod is connected to the front inner liner by bolt fasteners.

[0016] According to one embodiment of the present invention, the front inner liner, the rear inner liner, the lamp, and the bracket are all located between the two lower protective plates.

[0017] According to one embodiment of the present invention, a rear swingarm assembly, a rear wheel hub, and a rear mudguard assembly are included. The rear swingarm assembly is fixedly connected to the frame, the rear wheel hub is installed inside the rear swingarm assembly, and the rear mudguard assembly is installed on the rear swingarm assembly.

[0018] The beneficial effects of this utility model are:

[0019] Because the lower and upper skid plates are detachable rather than designed as a single unit, the lower skid plate can be removed individually for routine maintenance, simplifying most routine repairs and saving time by eliminating the need to disassemble the entire skid plate structure. Furthermore, the surfaces of both the lower and upper skid plates are smooth, with a seamless transition between the outer sides of the upper and lower skid plates, which further reduces wind resistance and noise. Once installed on the vehicle body, the skid plate structure results in a smooth, flat exterior surface that facilitates airflow and reduces energy consumption. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A schematic diagram provided for an embodiment of this utility model;

[0022] Figure 2 Exploded view provided for embodiments of this utility model;

[0023] Figure 3 This is a structural diagram of a motorcycle after the lower guard plate has been removed, provided in an embodiment of this utility model.

[0024] Figure 4 This is a side view of a motorcycle after the lower guard plate has been removed, according to an embodiment of the present invention.

[0025] Figure 5 Assembly diagram of the vehicle body, protective plate structure, inner lining mechanism and lamps provided for embodiments of this utility model;

[0026] Figure 6 Assembly diagram of the frame, rear swingarm assembly and rear wheel hub provided for embodiments of this utility model;

[0027] Figure 7 A structural diagram of the protective plate structure provided in this embodiment of the utility model;

[0028] Figure 8 Provided for the embodiments of this utility model Figure 7 Enlarged view of section A;

[0029] Figure 9 A structural diagram of the upper protective plate provided in an embodiment of this utility model;

[0030] Figure 10 A structural diagram of the lower guard plate provided in an embodiment of this utility model;

[0031] Figure 11 Assembly diagram of the front inner liner, rear inner liner, lamp and bracket provided for embodiments of this utility model;

[0032] Figure 12 Provided for the embodiments of this utility model Figure 10 Enlarged view of section B.

[0033] Icons: 1. Body; 2. Front inner liner; 3. Lights; 4. Rear mudguard assembly; 5. Rear inner liner; 6. Bracket; 601. First rod; 602. Second rod; 603. Connecting rod; 7. Frame; 8. Rear swingarm assembly; 9. Rear wheel hub; 10. Upper skid plate; 1001. Bottom side plate; 1002. Upper edge guard; 1003. First slot; 1004. Second slot; 1005. Locking pin; 11. Base plate assembly; 12. Lower skid plate; 1201. Lower edge guard; 1202. First buckle; 12021. Outer frame; 12022. Tongue block; 1203. Second buckle. Detailed Implementation

[0034] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] Example 1:

[0036] like Figures 1-12 As shown, one embodiment of the present invention provides a skid plate assembly for a motorcycle. The motorcycle includes a frame 7 and a body 1. The body 1 is mounted on the frame 7. The skid plate assembly includes a skid plate structure, which includes two upper skid plates 10 and two lower skid plates 12. The upper skid plates 10 and the lower skid plates 12 correspond one-to-one. The two upper skid plates 10 are respectively mounted on both sides of the body 1, and the two lower skid plates 12 are respectively mounted on both sides of the body 1. The upper skid plates 10 are higher than the lower skid plates 12.

[0037] The outer surface of the upper guard plate 10 is curved, and the outer surface of the lower guard plate 12 is curved. The outer surfaces of the upper guard plate 10 and the corresponding lower guard plate 12 are smoothly connected. The upper guard plate 10 and the corresponding lower guard plate 12 are detachably connected by a snap-fit ​​mechanism.

[0038] It should be noted that the lower skid plate 12 is the last part installed on the motorcycle body 1.

[0039] In this embodiment, since the lower guard plate 12 and the upper guard plate 10 are detachable rather than designed as a single unit, the lower guard plate 12 can be removed separately during routine maintenance. This simplifies most routine maintenance work, eliminating the need to disassemble the entire guard plate structure and saving disassembly time. Furthermore, as... Figure 1 As shown, in this embodiment, the surfaces of the lower guard plate 12 and the upper guard plate 10 have no concave or convex shapes, and the outer side of the upper guard plate 10 and the corresponding outer side of the lower guard plate 12 are smoothly transitioned, which is more conducive to reducing wind resistance and wind noise. After the guard plate structure is assembled, the outer surface of the vehicle body is flat and smooth, which facilitates airflow and reduces energy consumption.

[0040] In this embodiment, as Figure 5 As shown, the shape of the upper guard plate 10 is adapted to the outer perimeter of the vehicle body 1; as Figure 9 As shown, a bottom side plate 1001 is provided on the inner side of the bottom of the upper guard plate 10, and the bottom side plate 1001 is located on the inner side of the outer side of the upper guard plate 10. The latching mechanism includes latches and slots. The bottom side plate 1001 is provided with multiple slots, and the inner side of the lower guard plate 12 near its top is provided with multiple latches that correspond one-to-one with the slots. In this way, the upper guard plate 10 and the lower guard plate 12 can be quickly assembled and connected by the cooperation of the latches and slots, which also facilitates disassembly.

[0041] In this embodiment, as Figure 10 As shown, the top edge of the lower guard plate 12 is beveled, and the bottom edge of the corresponding upper guard plate 10 is also beveled. When the upper guard plate 10 and the lower guard plate 12 are assembled together, the bottom beveled edge of the upper guard plate 10 fits against the top beveled edge of the lower guard plate 12, and the bottom side plate 1001 of the upper guard plate 10 is located inside the lower guard plate 12. In this way, the gap at the connection between the upper guard plate 10 and the lower guard plate 12 is small, resulting in high dustproof and rainproof performance.

[0042] As a specific embodiment, such as Figure 10 As shown, on the inner side of the top edge of the lower guard plate 12, a plurality of first buckles 1202 are sequentially provided along the length direction of its top edge, and a plurality of second buckles 1203 are provided below the first buckles 1202. Correspondingly, as Figure 9 As shown, the bottom side plate 1001 is provided with a plurality of first slots 1003 corresponding to the first buckle 1202 and a plurality of second slots 1004 corresponding to the second buckles 1203. The first buckles 1202 and the second buckles 1203 are both plastic buckles with a certain degree of deformation capability.

[0043] Thus, when assembling the upper guard plate 10 and the lower guard plate 12, as follows: Figure 8 As shown, simply align the upper guard plate 10 and the lower guard plate 12 together, and insert the buckle on the lower guard plate 12 into the slot on the upper guard plate 10.

[0044] It should be noted that the first buckle 1202 and the second buckle 1203 have the same structure and are both plastic buckles, such as... Figure 12 As shown, each buckle includes an outer frame 12021 and a tongue-shaped block 12022. The outer frame 12021 is located inside the lower guard plate 12, and the tongue-shaped block 12022 is located inside the lower guard plate 12 and inside the outer frame 12021. To disconnect the lower guard plate 12 and the upper guard plate 10, simply pull the lower guard plate 12 outward to disengage the tongue-shaped block 12022 from the slot on the bottom side plate 1001.

[0045] In some embodiments, the upper guard plate 10 and the lower guard plate 12 are made of plastic or metal.

[0046] In this embodiment, as Figure 10 As shown, the inner edge of the lower guard plate 12 is integrally formed with a lower guard edge 1201, as... Figure 9 As shown, an upper guard edge 1002 is provided on one inner edge of the upper guard plate 10. (As shown...) Figure 8 As shown, when the upper guard plate 10 and the lower guard plate 12 are assembled together, the lower guard edge 1201 and the upper guard edge 1002 are aligned. In addition, a portion of the lower guard edge 1201 can be inserted into a groove on the edge of the bottom support assembly 11 to improve the stability of the lower guard plate 12.

[0047] Optional, such as Figure 9 As shown, a locking post 1005 is provided on the bottom side plate 1001, and a threaded through hole is provided in the locking post 1005. A threaded hole corresponding to the locking post 1005 is provided on the lower guard plate 12, and the threaded hole passes through the lower guard plate 12. In this way, bolts can be screwed into the threaded hole of the lower guard plate 12 from the outside of the lower guard plate 12 and tightened, thereby improving the connection strength between the lower guard plate 12 and the upper guard plate 10.

[0048] Optionally, the upper guard plate 10 and the vehicle body 1 are connected by clips or bolts.

[0049] In this embodiment, two sets of inner liner mechanisms are also provided, which are respectively installed on both sides of the vehicle body 1. The inner liner mechanisms include a front inner liner 2 and a rear inner liner 5. Along the front-to-rear direction of the vehicle body 1 (from the front to the rear), the front inner liner 2 and the rear inner liner 5 are arranged sequentially. The front inner liner 2 is fixed to the rear of the vehicle body 1, and the rear inner liner 5 is located behind the front inner liner 2. The rear inner liner 5 and the front inner liner 2 are connected by threaded fasteners. It should be noted that the purpose of the inner liner mechanism is to cover some internal components, such as brake pads and shock absorbers, and also to prevent mud and water from splashing from the side of the wheel hub. After removing the skid plate 12, the rear inner liner 5 can be removed to complete most of the maintenance work, making it easier to repair the motorcycle.

[0050] Specifically, such as Figure 5As shown, the front end of the front inner liner 2 is connected to the rear end of the vehicle body 1 by threaded fasteners, as... Figure 11 As shown, the rear inner liner 5 and the front inner liner 2 are connected by threaded fasteners.

[0051] Example 2:

[0052] A motorcycle includes a skid plate assembly, a base assembly 11, a rear swingarm assembly 8, a front swingarm assembly (not shown), a rear wheel hub 9, a front wheel hub (not shown), a rear fender assembly 4, and a front fender assembly (not shown). The base assembly 11 is fixed to and lower than the frame 7. The first end of the rear swingarm assembly 8 is fixed to the rear end of the frame 7. The rear wheel hub 9 is mounted between the two crossbeams of the rear swingarm assembly 8. The rear fender assembly 4 is mounted on the two crossbeams of the rear swingarm assembly 8 and is higher than the rear wheel hub 9.

[0053] In this embodiment, the motorcycle also includes two brackets 6, one of which is mounted on each inner liner mechanism. The brackets 6 are located on the outside of the inner liner mechanism and are used to stabilize the front inner liner 2 and the rear inner liner 5. Specifically, one end of the bracket 6 is connected to the front inner liner 2 by a threaded fastener, and the other end is connected to the frame 7 by a threaded fastener.

[0054] In this embodiment, the motorcycle also includes two lamps 3, which correspond one-to-one with the inner liner mechanism. The lamps 3 are located above the front inner liner 2 and the rear inner liner 5, and the front inner liner 2 and the rear inner liner 5 are respectively connected to the lamps 3 by threaded fasteners.

[0055] More specifically, such as Figure 11 As shown, the lamp 3 covers the top of the front inner liner 2 and the rear inner liner 5. The lamp 3 is connected to the front inner liner 2 by at least one threaded fastener, and the lamp 3 is connected to the rear inner liner 5 by at least one threaded fastener.

[0056] The bracket 6 includes a first rod 601, a second rod 602, and at least one connecting rod 603. The connecting rod 603 is fixed between the first rod 601 and the second rod 602. The first rod 601 and the second rod 602 form an "eight" shape. The first ends of the first rod 601 and the second rod 602 are fixedly connected to the vehicle frame 7 by threaded fasteners. The second end of the first rod 601 is connected to the front inner liner 2 and the lamp 3 by threaded fasteners. The second end of the second rod 602 is connected to the front inner liner 2 by bolt fasteners.

[0057] It should be noted that the bracket 6 can improve the stability of the inner liner mechanism and prevent the front inner liner 2 and the rear inner liner 5 from shaking and making abnormal noises during vehicle operation.

[0058] Furthermore, it should be noted that after removing the skid plate 12, rear inner liner 5, and rear mudguard assembly 4, the rear wheel hub 9 can be maintained, making routine maintenance convenient. After removing the skid plate 12, front inner liner 2, and bracket 6, the components located between the two front inner liners 2 can be repaired.

[0059] In summary, this motorcycle has at least the following advantages compared to traditional motorcycles:

[0060] First, the lower skid plate 12 and the upper skid plate 10 in the skid plate structure are detachable, rather than being designed as a single piece. Therefore, during routine maintenance, the lower skid plate 12 can be directly removed, which facilitates routine maintenance work without having to disassemble the entire vehicle body skid plate structure, saving disassembly time. In addition, the lower skid plate 12 and the upper skid plate 10 are connected by clips, making assembly and disassembly very convenient.

[0061] Secondly, the surfaces of the lower guard plate 12 and the upper guard plate 10 have no concave or convex shapes, and the outer side of the upper guard plate 10 and the corresponding outer side of the lower guard plate 12 are smoothly transitioned, which facilitates airflow and is more conducive to reducing wind resistance and wind noise.

[0062] Third, front inner liner 2 and rear inner liner 5 are installed, which can cover some internal components and also prevent mud and water from splashing from the side of the wheel hub.

[0063] Fourth, the bracket 6 can improve the stability of the inner lining mechanism and prevent the front inner lining 2 and the rear inner lining 5 from shaking and making abnormal noises during vehicle operation.

[0064] Fifth, the front inner liner 2, the rear inner liner 5, the lamp 3, and the bracket 6 are detachably connected by threaded fasteners, which facilitates installation and disassembly, and also makes it easier to remove the corresponding front inner liner 2 or rear inner liner 5, thus facilitating maintenance work.

[0065] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0066] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0067] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A skid plate assembly for a motorcycle, the motorcycle including a body (1) and a frame (7), the body (1) being mounted on the frame (7), characterized in that, The protective plate assembly includes a protective plate structure, which includes two upper protective plates (10) and two lower protective plates (12). The upper protective plates (10) and the lower protective plates (12) correspond one-to-one. The two upper protective plates (10) are respectively installed on both sides of the vehicle body (1), and the two lower protective plates (12) are respectively installed on both sides of the vehicle body (1). The upper protective plates (10) are higher than the lower protective plates (12). The outer side of the upper guard plate (10) is curved, and the outer side of the lower guard plate (12) is curved. The outer side of the upper guard plate (10) and the outer side of the corresponding lower guard plate (12) are smoothly connected. The upper guard plate (10) and the corresponding lower guard plate (12) are detachably connected by a snap-fit ​​mechanism.

2. The protective plate assembly according to claim 1, characterized in that, The buckle mechanism includes buckles and slots. The bottom of the upper guard plate (10) is provided with a bottom side plate (1001), and the bottom side plate (1001) is provided with multiple slots. The inner side of the lower guard plate (12) near its top is provided with multiple buckles that correspond one-to-one with the slots.

3. A protective plate assembly according to claim 1, characterized in that, It includes two sets of inner lining mechanisms, which are respectively installed on both sides of the vehicle body (1). The inner lining mechanism includes a front inner lining (2) and a rear inner lining (5). Along the front-rear direction of the vehicle body (1), the front inner lining (2) and the rear inner lining (5) are arranged in sequence. The front inner lining (2) is fixed to the rear of the vehicle body (1), and the rear inner lining (5) is connected to the front inner lining (2) by threaded fasteners.

4. A protective plate assembly according to claim 1, characterized in that, The inner edge of the upper guard plate (10) is provided with an upper guard edge (1002), and the inner edge of the lower guard plate (12) is provided with a lower guard edge (1201). The upper guard edge (1002) and the lower guard edge (1201) are aligned with each other.

5. A protective plate assembly according to claim 2, characterized in that, The bottom side plate (1001) is located inside the corresponding lower guard plate (12).

6. A motorcycle comprising a skid plate assembly as described in claim 3, characterized in that, It also includes two lamps (3), which correspond one-to-one with the inner lining mechanism. The lamps (3) are located above the front inner lining (2) and the rear inner lining (5) in the inner lining mechanism, and the front inner lining (2) and the rear inner lining (5) are respectively connected to the lamps (3) by threaded fasteners.

7. A motorcycle according to claim 6, characterized in that, It includes two brackets (6), one of which is installed on each of the inner lining mechanisms, and the brackets (6) are located on the outside of the inner lining mechanism; The bracket (6) is detachably connected to the front liner (2), the lamp (3) and the frame (7).

8. A motorcycle according to claim 7, characterized in that, The bracket (6) includes a first rod (601), a second rod (602) and at least one connecting rod (603). The connecting rod (603) is fixed between the first rod (601) and the second rod (602). The first ends of the first rod (601) and the second rod (602) are fixedly connected to the vehicle frame (7) by threaded fasteners. The second end of the first rod (601) is connected to the front inner liner (2) and the lamp (3) by threaded fasteners. The second end of the second rod (602) is connected to the front inner liner (2) by bolt fasteners.

9. A motorcycle according to claim 7, characterized in that, The front liner (2), the rear liner (5), the lamp (3), and the bracket (6) are all located between the two lower guard plates (12).

10. A motorcycle according to claim 9, characterized in that, The vehicle includes a rear swingarm assembly (8), a rear wheel hub (9), and a rear mudguard assembly (4). The rear swingarm assembly (8) is fixedly connected to the frame (7). The rear wheel hub (9) is installed inside the rear swingarm assembly (8), and the rear mudguard assembly (4) is installed on the rear swingarm assembly (8).