Road bicycle with small wheel diameter

Abstract

The utility model discloses a small-wheel-diameter road bicycle, which relates to the technical field of road bicycles and comprises a bicycle frame, a rear fork arranged at the rear end of the bicycle frame, a rear wheel rotationally arranged on the rear fork through a connecting shaft and a front wheel arranged on a front fork. A rear clamp matched with the rear wheel is arranged on the rear fork through a fixing assembly. By using the fixing component, the rear clamp is convenient to mount, the operation is simple and convenient, and the working efficiency of mounting the rear clamp is improved; through the use of the limiting piece, a nut in the fixing assembly can be conveniently limited, looseness caused by vibration of the nut is avoided, and therefore the installation stability of the rear clamp is improved; and through mutual cooperative use of the triangular annular clamping blocks and the annular clamping grooves, the extrusion cover can be conveniently limited and is prevented from falling off, and therefore the nut can be conveniently extruded and cannot be loosened.

Description

Technical Field

[0001] The utility model relates to the technical field of road bicycles, in particular to a road bicycle with a small wheel diameter. Background Art

[0002] A road bicycle, also known as a bicycle or a bicycle, is a means of transportation and transport that uses human power as a mechanical transmission. A bicycle is a land vehicle that is powered by human pedals, has at least two wheels, and is steered by handlebars and a front fork. It is made of steel, light alloy, or plastic. However, existing road bicycles vibrate during use, and the rear caliper of the road bicycle is fixed to the rear fork with bolts and nuts. This can cause the bolts and nuts fixing the rear caliper to loosen, causing the rear caliper to fall, affecting the use of the road bicycle. Summary of the Invention

[0003] The purpose of the utility model is to provide a small-wheel-diameter road bicycle in order to solve the above-mentioned problems.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A small-wheeled road bicycle comprises a frame, a rear fork arranged at the rear end of the frame, a rear wheel rotatably arranged on the rear fork via a connecting shaft, and a front wheel on the front fork, a seat being installed in the middle of the handlebar at the front end of the frame, and a rear clamp being provided on the rear fork via a fixing assembly and cooperating with the rear wheel.

[0006] Preferably, the fixing assembly includes a bolt arranged on the rear clamp, a circular hole is opened on the rear fork, and the bolt passes through the circular hole and is provided with a nut, and the end of the bolt is provided with a limiting piece acting on the nut.

[0007] Preferably, the limiting member includes an extrusion cover arranged at the end of the bolt, an annular clamping block is provided on the inner wall of the extrusion cover, and an annular clamping groove matched with the annular clamping block is opened on the bolt.

[0008] Preferably, the cross sections of the annular clamping block and the annular clamping groove are both triangular, and the annular clamping block is made of flexible rubber material.

[0009] Preferably, an internal thread matching with the bolt is provided on the inner wall of the extrusion cover.

[0010] Preferably, the height of the seat cushion is higher than the height of the faucet.

[0011] Preferably, the diameters of the rear wheels and the front wheels are less than or equal to inches.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0013] The utility model facilitates the installation of the rear clamp by using the fixing assembly, and the operation is simple and convenient, thereby improving the work efficiency of the installation of the rear clamp; wherein, by using the limiting member, it is convenient to limit the nut in the fixing assembly, and prevent the nut from vibrating and loosening, thereby improving the stability of the installation of the rear clamp; by the mutual cooperation of the triangular annular clamping block and the annular clamping groove, it is convenient to limit the extrusion cover, and prevent the extrusion cover from falling off, thereby facilitating the extrusion of the nut, so that the nut will not loosen. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It shows a schematic structural diagram of a front view provided according to an embodiment of the utility model;

[0015] Figure 2 A schematic diagram of the structure from a side perspective provided according to an embodiment of the present utility model is shown;

[0016] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0017] Figure 4 A structural schematic diagram of a fixing assembly provided according to an embodiment of the utility model is shown.

[0018] Legend:

[0019] 1. Frame; 2. Seat; 3. Handlebar; 4. Bolts; 5. Rear caliper; 6. Rear fork; 7. Connecting shaft; 8. Rear wheel; 9. Nut; 10. Annular groove; 11. Extrusion cover; 12. Annular block; 13. Internal thread. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-4 , the utility model provides a technical solution:

[0022] A small-wheeled road bicycle comprises a frame 1, a rear fork 6 arranged at the rear end of the frame 1, a rear wheel 8 rotatably arranged on the rear fork 6 and a front wheel on the front fork via a connecting shaft 7, a seat 2 being installed in the middle of a handlebar 3 at the front end of the frame 1, and the height of the seat 2 being higher than the height of the handlebar 3, the diameters of the rear wheel 8 and the front wheel being less than or equal to 20 inches, thereby reducing the height of the bicycle and making it suitable for people with a height of less than 1.5 meters; a rear clamp 5 cooperating with the rear wheel 8 is provided on the rear fork 6 via a fixing assembly; the use of the fixing assembly facilitates the installation of the rear clamp 5, is simple and convenient to operate, and improves the work efficiency of the installation of the rear clamp 5; wherein, the use of a limiting member facilitates the limiting of a nut 9 in the fixing assembly to prevent the nut 9 from vibrating and becoming loose, thereby improving the stability of the installation of the rear clamp 5.

[0023] In the present invention, the fixing assembly includes a bolt 4 arranged on the rear clamp 5, a circular hole is opened on the rear fork 6, and the bolt 4 passes through the circular hole and is provided with a nut 9. The end of the bolt 4 is provided with a limiting member acting on the nut 9. Through the use of the limiting member, it is convenient to limit the nut 9 to prevent the nut 9 from loosening due to vibration, thereby improving the stability of the installation of the rear clamp 5.

[0024] In the present invention, the limiting member includes an extrusion cover 11 arranged at the end of the bolt 4, an annular block 12 is provided on the inner wall of the extrusion cover 11, and an annular groove 10 that cooperates with the annular block 12 is provided on the bolt 4; the cross-sections of the annular block 12 and the annular groove 10 are both triangular, and the annular block 12 is made of flexible rubber material. Through the mutual use of the triangular annular block 12 and the annular groove 10, it is convenient to limit the extrusion cover 11 and prevent the extrusion cover 11 from falling off, thereby facilitating the extrusion of the nut 9 so that the nut 9 will not loosen, thereby improving the stability of the installation of the rear clamp 5; an internal thread 13 that cooperates with the bolt 4 is provided on the inner wall of the extrusion cover 11, which is convenient for installing the extrusion cover 11 on the bolt 4; and the annular block 12 is made of flexible rubber material, which facilitates the disengagement of the annular block 12 from the annular groove 10, thereby facilitating the disassembly of the extrusion cover 11.

[0025] Working Principle: When using the present invention, when installing the rear brake 5, first install the rear brake 5 on the rear fork 6 through the bolt 4 and nut 9, then screw the extrusion cover 11 onto the bolt 4, and make the annular clamping block 12 clamped on the annular clamping groove 10 on the bolt 4;

[0026] The nut 9 is squeezed by the extrusion cover 11 so that the nut 9 will not fall off, thereby ensuring the stability of the installation of the rear brake 5; wherein, the annular clamping block 12 is clamped in the annular clamping groove 10, and even if the bicycle vibrates while driving, the extrusion cover 11 will not fall off, thereby ensuring that the nut 9 will not fall off.

[0027] The above description of the embodiments is intended to enable those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A small-wheeled road bicycle comprising a frame (1), a rear fork (6) arranged at the rear end of the frame (1), a rear wheel (8) rotatably arranged on the rear fork (6) via a connecting shaft (7), and a front wheel on the front fork, characterized in that: A seat cushion (2) is installed in the middle of the handlebar (3) at the front end of the frame (1), and a rear clamp (5) that matches the rear wheel (8) is provided on the rear fork (6) through a fixing assembly; The fixing assembly comprises a bolt (4) arranged on the rear clamp (5), a circular hole is opened on the rear fork (6), the bolt (4) passes through the circular hole and is provided with a nut (9), and a limiter is provided at the end of the bolt (4) to act on the nut (9); The limiting member comprises an extrusion cover (11) arranged at the end of the bolt (4), an annular clamping block (12) is provided on the inner wall of the extrusion cover (11), and an annular clamping groove (10) is provided on the bolt (4) to match the annular clamping block (12).

2. A small-wheeled road bicycle according to claim 1, characterized in that: The cross sections of the annular clamping block (12) and the annular clamping groove (10) are both triangular, and the annular clamping block (12) is made of a flexible rubber material.

3. A small-wheeled road bicycle according to claim 2, characterized in that: An internal thread (13) that matches the bolt (4) is provided on the inner wall of the extrusion cover (11).

4. A small-wheeled road bicycle according to claim 3, characterized in that: The height of the seat cushion (2) is higher than the height of the faucet (3).

5. A small-wheeled road bicycle according to claim 4, characterized in that: The diameters of the rear wheel (8) and the front wheel are less than or equal to 20 inches.

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