CN221340891U - Rotation stopping device and two-wheeled vehicle - Google Patents

Abstract

The embodiment of the utility model discloses a rotation stopping device and a two-wheeled vehicle, wherein the rotation stopping device comprises a first limiting groove and a second limiting groove, wherein the first limiting groove is arranged on a first side and the second limiting groove is arranged on a second side in a back-to-back mode along the thickness direction. The first limit groove is matched with the first mounting structure in shape and is connected with the first mounting structure, and the second limit groove is matched with the second mounting structure in shape and is connected with the second mounting structure. The rotation stopping device further comprises a connecting structure, wherein the connecting structure is used for fixing the first mounting structure, the second mounting structure and the rotation stopping device, so that relative rotation between the first mounting structure and the second mounting structure cannot occur. The anti-rotation device disclosed by the embodiment of the utility model is beneficial to avoiding relative rotation between the mud guard and the frame and improving the driving safety of the two-wheeled vehicle.

Description

Rotation stopping device and two-wheeled vehicle

Technical Field

The utility model relates to the technical field of bicycles, in particular to a rotation stopping device and a two-wheel vehicle.

Background

Two-wheeled vehicles such as bicycles and electric vehicles are vehicles commonly used for daily traveling of people, and in order to prevent sediment, rainwater and the like from splashing to pollute riding personnel, a mud guard is often arranged on the outer side of each wheel of the two-wheeled vehicle. But traditional fender and the connected mode between the frame are only through a screwed connection, and connection stability is not enough, and the fender takes place to take place the deflection of screw as the center easily, influences the protection effect of fender and produces the security risk even.

Disclosure of utility model

In view of the above, an object of the present utility model is to provide a rotation stopping device and a two-wheeled vehicle, which can improve the reliability of fixing between a fender and a frame and prevent the fender from being deflected.

In a first aspect, an embodiment of the present utility model provides a rotation stopping device for a two-wheeled vehicle, where the two-wheeled vehicle includes a frame and a fender, the frame includes a first mounting structure, the fender includes a second mounting structure, the rotation stopping device has a first side and a second side opposite to each other in a thickness direction, the first side has a first limiting groove, the second side has a second limiting groove, the first limiting groove is matched with the first mounting structure in shape, the second limiting groove is matched with the second mounting structure in shape, the rotation stopping device further has a connection structure configured to connect the first mounting structure with the second mounting structure.

Further, the width of the first limit groove is matched with the size of the corresponding position of the first mounting structure; and/or the width of the second limit groove is matched with the size of the corresponding position of the second mounting structure.

Further, the first limiting groove is provided with a closed end and an open end which are oppositely arranged along the extending direction of the first limiting groove, and the side wall of the closed end is matched with the corresponding position of the first mounting structure in shape.

Further, the rotation stopping device is provided with a first end and a second end which are arranged in a back-to-back mode, the closed end is arranged at the first end, the open end is arranged at the second end, and the middle of the second end is recessed towards the direction close to the first end.

Further, the second limit groove extends from the edge of the first end to the edge of the second end.

Further, the second side of the rotation stopping device is provided with a first end face, a first side wall and a second side wall, the first side wall and the second side wall protrude from the first end face, the first side wall and the second side wall are arranged in parallel at intervals, a second limiting groove is formed by surrounding a region, located between the first side wall and the second side wall, of the first side wall, a junction of one side surface, deviating from the second side wall, of the first side wall and the first end face, and a junction of one side surface, deviating from the first side wall, of the second side wall and the first end face, of the second side wall are respectively provided with a reinforcing rib.

Further, the connecting structure is a through hole penetrating through the rotation stopping device in the thickness direction, and the through hole is communicated with the bottom of the first limiting groove and the bottom of the second limiting groove.

In a second aspect, an embodiment of the present utility model further provides a two-wheeled vehicle, including: a frame including a first mounting structure; a fender including a second mounting structure; and a rotation stopping device as described in the first aspect; the first mounting structure is arranged in the first limiting groove, the second mounting structure is arranged in the second limiting groove, the two-wheeled vehicle further comprises a fastener, and the fastener is connected with the first mounting structure, the second mounting structure and the connecting structure to fix the mudguard on the first mounting structure through the rotation stopping device.

Further, the first mounting structure has a first mounting hole, the second mounting structure has a second mounting hole, and the connection structure is coaxially disposed with the first mounting hole and the second mounting hole.

Further, the frame includes the well pipe, and one end and the well union coupling of first mounting structure, the other end extends to the just rear of two wheeler or rear below, and the device that splines and second mounting structure set up in the below of the device that splines.

The embodiment of the utility model provides a rotation stopping device and a two-wheel vehicle, wherein the rotation stopping device comprises a first limit groove and a second limit groove, the first limit groove is arranged on a first side and the second limit groove is arranged on a second side in a thickness direction in a back-to-back mode, the first limit groove is matched with the first mounting structure in shape and is connected with the first mounting structure, the second limit groove is matched with the second mounting structure in shape and is connected with the second mounting structure, the rotation stopping device further comprises a connecting structure, and the connecting structure is used for fixing the first mounting structure, the second mounting structure and the rotation stopping device, so that relative rotation between the first mounting structure and the second mounting structure cannot occur. The anti-rotation device disclosed by the embodiment of the utility model is beneficial to avoiding relative rotation between the mud guard and the frame and improving the driving safety of the two-wheeled vehicle.

Drawings

The above and other objects, features and advantages of the present utility model will become more apparent from the following description of embodiments of the present utility model with reference to the accompanying drawings, in which:

FIG. 1 is a schematic perspective view of a two-wheeled vehicle of a comparative example;

Fig. 2 is a schematic perspective view of a rotation stopping device according to an embodiment of the present utility model;

FIG. 3 is a top view of a rotation stop device according to an embodiment of the present utility model;

FIG. 4 is a front view of a rotation stopping device provided by an embodiment of the present utility model;

FIG. 5 is a side view of a rotation stop device provided in an embodiment of the present utility model;

FIG. 6 is a schematic perspective view of a two-wheeled vehicle according to an embodiment of the present utility model;

Fig. 7 is a schematic view of a perspective view of a position a of a two-wheeled vehicle according to an embodiment of the present utility model.

Reference numerals illustrate:

1-a frame; 11-a first mounting structure; 111-a first mounting hole; 12-middle tube;

2-a fender; 21-a second mounting structure; 211-a second mounting hole; 22-a fender body;

3-a rotation stopping device; 31-a first limit groove; 311-closed end; 312-open end; 313-a third sidewall; 314-fourth side wall; 315-fifth sidewalls; 32-a second limit groove; 33-linkage; 34-a first end; 35-a second end; 36-a first end face; 37-a first sidewall; 38-a second sidewall; 39-reinforcing ribs.

Detailed Description

The present application is described below based on examples, but the present application is not limited to only these examples. In the following detailed description of the present application, certain specific details are set forth in detail. The present application will be fully understood by those skilled in the art without the details described herein. Well-known methods, procedures, flows, components and circuits have not been described in detail so as not to obscure the nature of the application.

Moreover, those of ordinary skill in the art will appreciate that the drawings are provided herein for illustrative purposes and that the drawings are not necessarily drawn to scale.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly, as they may be fixed, removable, or integral, for example; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

Unless the context clearly requires otherwise, the words "comprise," "comprising," and the like throughout the application are to be construed as including but not being exclusive or exhaustive; that is, it is the meaning of "including but not limited to".

In the description of the present application, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

Fig. 1 is a schematic perspective view of a two-wheeled vehicle of a comparative example, in which the two-wheeled vehicle includes a frame 1 and a fender 2, referring to fig. 1. The frame 1 includes a first mounting structure 11 for mounting a fender 2, and the fender 2 includes a fender body 22 provided above a wheel and a second mounting structure 21 connected to the fender body 22. The second mounting structure 21 may be a lifting lug protruding from the upper surface of the fender body 22. The first mounting structure 11 has a first mounting hole 111, and the second mounting structure 21 has a second mounting hole 211. In the comparative example, a fastener (not shown) is used to pass through the first mounting hole 111 and the second mounting hole 211 to connect the first mounting structure 11 with the second mounting structure 21, and in use, the fender body 22 easily drives the second mounting structure 21 to rotate around the fastener due to road jolt or vehicle tilting, etc., so that the fender body 22 deflects left and right, thereby reducing the fender effect of the fender 2.

The embodiment of the utility model provides a rotation stopping device 3 which is used for auxiliary fixing of a frame 1 and a mud guard 2. As shown in fig. 7, the frame 1 includes a first mounting structure 11, and the fender 2 includes a second mounting structure 21. The rotation stopping device 3 is disposed between the first mounting structure 11 and the second mounting structure 21, and the two-wheeled vehicle may further include a fastener connected with the first mounting structure 11, the second mounting structure 21 and the rotation stopping device 3 to fix the fender 2 to the first mounting structure 11 through the rotation stopping device 3.

Fig. 2 is a schematic perspective view of a rotation stopping device according to an embodiment of the present utility model, referring to fig. 2, the rotation stopping device 3 has a first side and a second side opposite to each other in a thickness direction, and when the rotation stopping device 3 is connected to the frame 1 and the mud flap 2, the first side is connected to the first mounting structure 11, and the second side is connected to the second mounting structure 21. The first side of the rotation stopping device 3 is provided with a first limit groove 31, and the second side is provided with a second limit groove 32. That is, the groove bottoms of the first and second stopper grooves 31 and 32 are provided on opposite sides of the rotation stopper 3, respectively, and the groove walls of the first and second stopper grooves 31 and 32 extend from the groove bottoms to opposite sides, respectively. The first limiting groove 31 is matched with the shape of the first mounting structure 11, and the second limiting groove 32 is matched with the shape of the second mounting structure 21. Specifically, the shape of the first limiting groove 31 is matched with that of the first mounting structure 11, which means that the first mounting structure 11 can be placed into the first limiting groove 31, and the groove wall of the first limiting groove 31 can prevent the first mounting structure 11 from rotating in the first limiting groove 31; the second mounting structure 21 may be placed in the second limiting groove 32, and a groove wall of the second limiting groove 32 may block the second mounting structure 21 from rotating in the second limiting groove 32. Alternatively, the extending direction of the first limiting groove 31 and the extending direction of the second limiting groove 32 are substantially parallel.

The rotation stopping device 3 further has a connection structure 33, where the connection structure 33 is used to connect the first mounting structure 11 and the second mounting structure 21, for example, the first mounting structure 11, the second mounting structure 21 and the connection structure 33 may be connected and fixed by fasteners, so that the first mounting structure 11 is held in the first limiting groove 31 and the second mounting structure 21 is held in the second limiting groove 32, thereby realizing the relative fixation between the mudguard 2 and the frame 1. The specific form of the connection structure 33 may be selected correspondingly to the structure of the second mounting structure 21 according to the first mounting structure 11, for example, referring to fig. 7, when the first mounting structure 11 has the first mounting hole 111 and the second mounting structure 21 has the second mounting hole 211, the connection structure 33 may be a through hole penetrating the rotation stopping device 3 in the thickness direction, which communicates the groove bottom of the first limiting groove 31 and the groove bottom of the second limiting groove 32.

In this embodiment, the width of the first limiting groove 31 matches the size of the corresponding position of the first mounting structure 11. The first limiting groove 31 includes a third side wall 313 and a fifth side wall 315 which are oppositely arranged, and the distance between the opposite sides of the third side wall 313 and the fifth side wall 315 is the width of the first limiting groove 31, where the width of the first limiting groove 31 is greater than or equal to the width of the corresponding position of the first mounting structure 11. Preferably, the method comprises the steps of. The space between the third side wall 313 and the fifth side wall 315 is equal to the width of the corresponding position of the first mounting structure 11, so that the rotation stopping device 3 and the first mounting structure 11 can be prevented from being deflected better. The first limit groove 31 may be formed by removing a part of the structure on the first side of the rotation stopping device 3 to form a recess, or the first limit groove 31 may be formed by a mold molding.

In one embodiment, the first limiting groove 31 is provided with groove walls in three directions, and the remaining side is provided with an opening. As shown in fig. 3, the first limiting groove 31 has a closed end 311 and an open end 312 disposed opposite to each other in the extending direction of the first limiting groove 31. The first limiting groove 31 is provided with a third side wall 313, a fourth side wall 314 and a fifth side wall 315 which are sequentially connected in a region except the opening end 312, the fourth side wall 314 is arranged at the closed end 311, the third side wall 313 and the fifth side wall 315 are respectively arranged at two sides of the opening end 312, and two ends of the fourth side wall 314 are respectively connected with the ends of the third side wall 313 and the fifth side wall 315, which are far away from the opening end 312. The width of the first limiting groove 31 is matched with the size of the corresponding position of the first mounting structure 11, that is, the distance between the groove walls on two sides of the first limiting groove 31 is greater than or equal to the size of the first mounting structure 11 perpendicular to the extending direction. Preferably, the spacing between the two side groove walls of the first limiting groove 31 is equal to the dimension of the first mounting structure 11 perpendicular to the extending direction. The shape of the inner wall of the first limiting groove 31 at the closed end 311 matches the shape of the corresponding position of the first mounting structure 11, for example, referring to fig. 7, in this embodiment, the first mounting structure 11 has a free end close to the wheel, the side surface of the free end is a substantially cylindrical surface, and the side wall of the closed end 311 facing the open end 312 (i.e., the surface of the fourth side wall 314 near the open end 312) is a cylindrical surface matching the free end of the first mounting structure 11. When the first mounting structure 11 is disposed in the first limiting groove 31, the free end of the first mounting structure 11 is attached to the fourth side wall 314, and two sides of the first mounting structure 11 are attached to the third side wall 313 and the fifth side wall 315 respectively, so that the positioning effect can be achieved during mounting.

As shown in fig. 4, the second side of the rotation stopping device 3 has a first end surface 36, a first side wall 37 and a second side wall 38 protruding from the first end surface 36, and a second limit groove 32 is defined by the first side wall 37, the second side wall 38 and a region of the first end surface 36 between the first side wall 37 and the second side wall 38. The first side wall 37 and the second side wall 38 are arranged in parallel at intervals, and the width of the second limiting groove 32 is matched with the size of the corresponding position of the second mounting structure 21, for example, the distance between the two opposite surfaces of the first side wall 37 and the second side wall 38 is slightly larger than or equal to the size of the corresponding position of the second mounting structure 21. Preferably, the width of the second limiting groove 32 is equal to the size of the corresponding position of the second mounting structure 21. In some embodiments, the second limiting groove 32 may be formed by removing a slot in the first end surface 36 or the second limiting groove 32 may be formed by way of a mold.

Further, reinforcing ribs 39 are respectively arranged at the connection position of the first end face 36 and the side surface of the first side wall 37 facing away from the second side wall 38 and the connection position of the first end face 36 and the side surface of the second side wall 38 facing away from the first side wall 37, so that the strength of the first side wall 37 and the second side wall 38 is improved. In this embodiment, a plurality of reinforcing ribs 39 are disposed in parallel on opposite sides of the first side wall 37 and the second side wall 38, and the plurality of reinforcing ribs 39 may be disposed at equal intervals, so that the strength of each of the first side wall 37 and the second side wall 38 is similar.

The rotation stopping device 3 has a first end 34 and a second end 35 disposed opposite to each other, a closed end 311 is disposed at the first end 34, and an open end 312 is disposed at the second end 35. The second limiting groove 32 extends from an edge of the first end 34 to an edge of the second end 35. In the present embodiment, the length of the second limiting groove 32 is equal to or greater than the length of the second mounting structure 21, and may be smaller than the length of the first mounting structure 11. Wherein the length of the second mounting structure 21 refers to the length of the portion of the second mounting structure 21 protruding from the fender body 22. Optionally, the middle of the second end 35 is recessed in a direction towards the first end 34, thereby reducing the volume and weight of the overall rotation stop device 3 while maintaining sufficient contact area of the third 313 and fifth 315 side walls with the first mounting structure 11. The shape of the first end 34 may be set according to the shape of the first mounting structure 11, for example, referring to fig. 7, the side surface of the free end of the first mounting structure 11 is a cylindrical surface, and the middle portion of the first end 34 may also correspondingly protrude in a direction away from the second end 35 to form a contour similar to the shape of the free end of the first mounting structure 11, so that the aesthetic degree of the rotation stopping device 3 may be improved.

As shown in fig. 5, in the present embodiment, the length of the first mounting structure 11 is greater than the length of the second mounting structure 21, and the dimension of the first limiting groove 31 along the length direction is greater than the dimension of the second limiting groove 32 along the length direction, which is beneficial to improving the stability of the connection between the rotation stopping device 3 and the first mounting structure 11 and the second mounting structure 21.

The width of the first limiting groove 31 is larger than the width of the second limiting groove 32 in the present embodiment. Specifically, as shown in fig. 4, the width between the opposite side walls of the first stopper groove 31 is larger than the width between the opposite side walls of the second stopper groove 32, and the second mounting structure 21 having a smaller width and the first mounting structure 11 having a larger width are adapted.

The embodiment of the utility model also relates to a two-wheel vehicle, and the two-wheel vehicle can be in a specific form of a bicycle, an electric vehicle, a motorcycle and the like through manual driving, motor driving, hybrid power driving or other driving modes. Referring to fig. 6 and 7, the two-wheeled vehicle comprises a frame 1, a mudguard 2 and a rotation stop device 3 as described in at least some of the embodiments above. The frame 1 comprises a first mounting structure 11 and the mudguard 2 comprises a second mounting structure 21. The rotation stopping means 3 is arranged between the first mounting structure 11 and the second mounting structure 21, preventing the two from relative rotation.

In some embodiments, the first mounting structure 11 has a first mounting hole 111 and the second mounting structure 21 has a second mounting hole 211. The connection structure 33 is a through hole penetrating the rotation stopping device 3 along the thickness direction, and the through hole communicates the bottom of the first limit groove 31 and the bottom of the second limit groove 32. The two-wheeled vehicle further includes a fastener that passes through the first mounting hole 111, the connection structure 33, and the second mounting hole 211 to fix the frame 1, the rotation stopper 3, and the fender 2. The fasteners may include bolts and nuts, and the first mounting hole 111, the connection structure 33, and the second mounting hole 211 are all light holes that fit the size of the bolts. Bolts pass through the first mounting holes 111, the connecting structure 33 and the second mounting holes 211 and connect nuts, and the bolts and nuts apply pressure to the first mounting structure 11 and the second mounting structure 21 to fix the vehicle frame 1, the rotation stopping device 3 and the mud flap 2, respectively. In some embodiments, the fastener is a bolt and the first mounting hole 111 and/or the second mounting hole 211 are threaded holes that threadably mate with the bolt. The first mounting hole 111, the second mounting hole 211 and the connection structure 33 may also be non-circular holes, such as hexagonal holes, rectangular holes, etc., and the fastener has a shape matching the first mounting hole 111, the second mounting hole 211 and the connection structure 33, so as to assist the first limiting groove 31 and the second limiting groove 32 to block the first mounting structure 11 and the second mounting structure 21 from rotating relative to each other after the fixing frame 1, the rotation preventing device 3 and the mudguard 2 are inserted.

In some embodiments, the connection structure 33 is a stud extending from opposite sides of the rotation stopping device 3 toward the first mounting structure 11 and the second mounting structure 21, and the stud extends into the first mounting hole 111 and the second mounting hole 211, so as to fix the frame 1, the rotation stopping device 3, and the mud flap 2.

In some embodiments, the connection structure 33 and the first mounting hole 111 are holes having similar diameters. When the first mounting structure 11 is set into the first limiting groove 31 and the second mounting structure 21 is set into the second limiting groove 32, the connection structure 33 is coaxially set with the first mounting hole 111.

In one embodiment, as shown in fig. 7, the second mounting structure 21 is a lifting lug, and the second mounting hole 211 is an oblong hole, and a length direction of the oblong hole is parallel to an extending direction of the second mounting structure 21. Thereby, the positional relationship between the lifting lug and the rotation stopping device 3 and the lifting lug and the first mounting structure 11 can be adjusted, thereby adjusting the gap between the fender main body 22 and the wheel.

As shown in fig. 6, in the present embodiment, the rotation stopping device 3 can be used for mounting the fender 2 of the rear wheel of the two-wheeled vehicle. The frame 1 includes a middle tube 12, and a first mounting structure 11 is a pay-off sheet, and one end of the first mounting structure 11 is connected to the middle tube 12, and the other end extends to the right rear or the rear lower side of the two-wheeled vehicle. The fender body 22 is provided on the outer periphery of the rear wheel of the two-wheeled vehicle above or obliquely above the rear wheel, and the second mounting structure 21 extends from the upper surface of the fender body 22 in a direction approaching the center tube 12.

The first mounting structure 11 has a first mounting hole 111 at an end remote from the middle tube 12.

In some embodiments, the rotation stop device 3 may be used for the mounting of the mudguard 2 of the front wheel of a two-wheeled vehicle. The frame 1 includes a front fork, and one end of the first mounting structure 11 is connected to the front fork, and the other end extends forward or forward and downward of the two-wheeled vehicle. The fender 2 is disposed above or obliquely above the front wheel of the two-wheeled vehicle, and the fender 2 is at least partially located on the lower side of the front fork. The second mounting structure 21 extends from the fender 2 near the front fork portion toward the first mounting structure 11.

The embodiment of the utility model provides a rotation stopping device and a two-wheel vehicle, wherein the rotation stopping device comprises a first limit groove and a second limit groove, the first limit groove is arranged on a first side and the second limit groove is arranged on a second side in a thickness direction in a back-to-back mode, the first limit groove is matched with the first mounting structure in shape and is connected with the first mounting structure, the second limit groove is matched with the second mounting structure in shape and is connected with the second mounting structure, the rotation stopping device further comprises a connecting structure, and the connecting structure is used for fixing the first mounting structure, the second mounting structure and the rotation stopping device, so that relative rotation between the first mounting structure and the second mounting structure cannot occur. The anti-rotation device disclosed by the embodiment of the utility model is beneficial to avoiding relative rotation between the mud guard and the frame and improving the running safety of a two-wheeled vehicle with the anti-rotation device.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A rotation stopping device for a two-wheeled vehicle, the two-wheeled vehicle comprises a frame (1) and a mud guard (2), the frame (1) comprises a first mounting structure (11), the mud guard (2) comprises a second mounting structure (21), and is characterized in that the rotation stopping device (3) is provided with a first side and a second side which are arranged back to back along the thickness direction, the first side is provided with a first limit groove (31), the second side is provided with a second limit groove (32), the first limit groove (31) is matched with the shape of the first mounting structure (11), the second limit groove (32) is matched with the shape of the second mounting structure (21), the rotation stopping device (3) is further provided with a connecting structure (33), and the connecting structure (33) is configured to connect the first mounting structure (11) with the second mounting structure (21).

2. The rotation stopping device according to claim 1, characterized in that the width of the first limit groove (31) is matched with the size of the corresponding position of the first mounting structure (11); and/or

The width of the second limit groove (32) is matched with the size of the corresponding position of the second mounting structure (21).

3. The rotation stopping device according to claim 1, wherein the first limiting groove (31) is provided with a closed end (311) and an open end (312) which are oppositely arranged along the extending direction of the first limiting groove (31), and the side wall of the closed end (311) is matched with the corresponding position shape of the first mounting structure (11).

4. A rotation stopping device according to claim 3, characterized in that the rotation stopping device (3) is provided with a first end (34) and a second end (35) which are arranged oppositely, the closed end (311) is arranged at the first end (34), the open end (312) is arranged at the second end (35), and the middle part of the second end (35) is recessed towards the direction approaching the first end (34).

5. The anti-rotation device according to claim 4, characterized in that the second limit groove (32) extends from the edge of the first end (34) to the edge of the second end (35).

6. The rotation stopping device according to claim 1, characterized in that the second side of the rotation stopping device (3) is provided with a first end face (36) and a first side wall (37) and a second side wall (38) protruding from the first end face (36), the first side wall (37) and the second side wall (38) are arranged in parallel at intervals, the first side wall (37), the second side wall (38) and the first end face (36) are located in a region between the first side wall (37) and the second side wall (38) to form a second limit groove (32), and a connection part between one side surface of the first side wall (37) deviating from the second side wall (38) and the first end face (36) and a connection part between one side surface of the second side wall (38) deviating from the first side wall (37) and the first end face (36) are respectively provided with a reinforcing rib (39).

7. The rotation stopping device according to claim 1, characterized in that the connecting structure (33) is a through hole penetrating the rotation stopping device (3) in the thickness direction, and the through hole communicates the groove bottom of the first limit groove (31) and the groove bottom of the second limit groove (32).

8. A two-wheeled vehicle, characterized in that the two-wheeled vehicle comprises:

A frame (1), the frame (1) comprising a first mounting structure (11);

A fender (2), the fender (2) comprising a second mounting structure (21); and

The rotation stop device (3) according to any one of claims 1-7;

The first mounting structure (11) is arranged in the first limiting groove (31), the second mounting structure (21) is arranged in the second limiting groove (32), the two-wheeled vehicle further comprises a fastener, and the fastener is connected with the first mounting structure (11), the second mounting structure (21) and the connecting structure (33) so as to fix the mud guard (2) on the first mounting structure (11) through the rotation stopping device (3).

9. The two-wheeled vehicle according to claim 8, characterized in that the first mounting structure (11) has a first mounting hole (111) and the second mounting structure (21) has a second mounting hole (211), and the connection structure (33) is arranged coaxially with the first mounting hole (111) and the second mounting hole (211).

10. The two-wheeled vehicle according to claim 9, wherein the frame (1) includes a center pipe (12), one end of the first mounting structure (11) is connected to the center pipe (12), the other end extends directly behind or rearwardly and downwardly of the two-wheeled vehicle, and the rotation stopping device (3) and the second mounting structure (21) are disposed below the rotation stopping device (3).