CN214985853U

CN214985853U - Folding bicycle

Info

Publication number: CN214985853U
Application number: CN202120880855.3U
Authority: CN
Inventors: 吴永青
Original assignee: Dongguan Chengen Sporting Goods Co ltd
Current assignee: Dongguan Chengen Sporting Goods Co ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2021-12-03
Anticipated expiration: 2031-04-27

Abstract

The application relates to the technical field of vehicles, in particular to a folding bicycle which comprises a frame, wherein the frame comprises a seat tube, a front tripod and a rear tripod, a front wheel is installed on a front fork, a front brake disc is fixedly connected to the front wheel, and a first caliper which is in clamping fit with the front brake disc is installed on the front fork; the rear tripod is provided with a rear wheel, the rear wheel is coaxially and fixedly connected with a rear brake disc, and the rear tripod is provided with a second caliper which is in clamping fit with the rear brake disc. The disc brake is arranged between the front wheel and the front fork and between the rear wheel and the rear tripod, so that the brake effect of the bicycle is enhanced, the disc brake cannot easily slip in rainy days, muddy lands or wading roads, and the tire cannot be locked due to too large brake force, so that safety accidents are avoided.

Description

Folding bicycle

Technical Field

The application relates to the technical field of vehicles, in particular to a folding bicycle.

Background

A folding bicycle belongs to a classification of bicycles. The folding bicycle is composed of a frame folding joint and a vertical pipe folding joint. The front and the rear wheels are folded together by folding the frame, so that the length can be reduced by about 45 percent.

The whole vehicle can be put into a folding bag after being folded and a trunk of the vehicle. The folding and unfolding of the bicycle can be manually carried out without using external tools in the folding process. After being folded, the seat post is used as a supporting point so as to ensure that the chair can stand stably after being folded. The folding bicycle is convenient and comfortable to carry and use, and the production process is mature.

However, the existing folding bicycle adopts V brake and C brake, the folding bicycle adopting V brake and C brake is easy to slip in rainy days, muddy fields or wading roads, and the tires are locked due to overlarge brake force, thereby causing safety accidents.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned deficiencies of the prior art, it is an object of the present application to provide a foldable bicycle having safety advantages.

The technical purpose of the application is realized by the following technical scheme: a folding bicycle comprises a frame, wherein the frame comprises a seat tube, a front tripod and a rear tripod, the front tripod is provided with a first joint, the first joint divides the front tripod into a front section and a rear section which are hinged with each other, and the front tripod is provided with a first buckle for connecting and separating the front section and the rear section;

one vertex angle of the rear tripod is hinged with the lower end of the seat tube, and a second buckle for connecting and separating the rear tripod and the seat tube is arranged between the other vertex angle of the rear tripod and the upper end of the seat tube;

the front tripod is rotatably connected with a front fork, a first pipe for mounting a handlebar extends upwards from the front fork, the first pipe is provided with a second joint, the second joint divides the first pipe into an upper section and a lower section which are mutually hinged, and the first pipe is provided with a third buckle for connecting and separating the upper section and the lower section;

the front fork is provided with a front wheel, the front wheel is fixedly connected with a front brake disc, and the front fork is provided with a first caliper which is in clamping fit with the front brake disc;

the rear tripod is provided with a rear wheel, the rear wheel is coaxially and fixedly connected with a rear brake disc, and the rear tripod is provided with a second caliper which is in clamping fit with the rear brake disc.

Through the technical scheme, after the foldable bicycle is used up, the front section and the rear section of the front tripod are separated by the first buckle and rotate along the hinge at the first joint, so that the folding of the front tripod is completed;

the second buckle separates the other vertex angle of the rear tripod from the upper end of the seat tube, and enables one vertex angle of the rear tripod to rotate along the hinge at the lower end of the seat tube and one vertex angle of the rear tripod, so that the folding of the rear tripod is completed;

the third buckle separates the upper section from the lower section of the first pipe, and enables the upper section of the first pipe to rotate along the hinge at the second joint, so that the first pipe is folded; after the whole folding bicycle is folded, the folding bicycle is convenient to move and store;

the disc brake is arranged between the front wheel and the front fork and between the rear wheel and the rear tripod, so that the brake effect of the bicycle is enhanced, the disc brake cannot easily slip in rainy days, muddy lands or wading roads, and the tire cannot be locked due to too large brake force, so that safety accidents are avoided.

Preferably, the front wheel comprises a first hub arranged at the axle center of the front wheel, the first hub is provided with two first mounting surfaces, the first mounting surfaces are perpendicular to the axle center of the first hub, the distance between the two first mounting surfaces is 74mm, the front fork is provided with two first abutting surfaces for clamping the first hub, and the distance between the two first abutting surfaces is 74 mm; the first hub is further provided with a first fixing surface for mounting the front brake disc, the first fixing surface is parallel to the first mounting surface, and the distance between the first fixing surface and the first mounting surface close to the first fixing surface is 10.5 mm.

Through above-mentioned technical scheme, through the redesign to first flower-drum, certain adjustment has been carried out to the size of first flower-drum, adjusts the size of front fork according to the size after first flower-drum adjustment, makes the dish stop can be reasonable the installation between front wheel and front fork.

Preferably, the rear wheel comprises a second hub arranged at the axle center of the rear wheel, the second hub is provided with two second mounting surfaces, the second mounting surfaces are perpendicular to the axle center of the second hub, the distance between the two second mounting surfaces is 112mm, the rear tripod is provided with two second abutting surfaces for clamping the second hub, and the distance between the second abutting surfaces is 112 mm; the second hub is further provided with a second fixing surface for mounting the rear brake disc, the second fixing surface is parallel to the second mounting surface, and the distance between the second fixing surface and the second mounting surface close to the second fixing surface is 15.3 mm.

Through above-mentioned technical scheme, through the redesign to the second flower-drum, certain adjustment has been carried out to the size of second flower-drum, adjusts the size of rear tripod according to the size after the second flower-drum adjustment, makes the dish stop can be reasonable install between rear wheel and rear tripod.

Preferably, the front fork is provided with a first mounting column, the first mounting column is coaxially provided with a first threaded hole, the axis of the first threaded hole is parallel to the front brake disc, and the first caliper is fixed to the first threaded hole through a screw.

Through above-mentioned technical scheme, be fixed in the first erection column of front fork with first calliper, because first screw hole axis is parallel with preceding brake disc, consequently when the braking front wheel, the pulling force of circumference is received to the screw of fixed first calliper, and screw axial bearing capacity is strong, and the screw receives circumference power and hardly splits, has strengthened the security of brake.

Preferably, the rear tripod is provided with a second mounting column, the second mounting column is coaxially provided with a second threaded hole, the axis of the second threaded hole is parallel to the rear brake disc, and the caliper is fixed in the second threaded hole through a screw.

Through above-mentioned technical scheme, be fixed in the second erection column of front fork with second calliper, because second screw hole axis is parallel with back brake disc, consequently when the braking after, the screw of fixed second calliper receives circumferential pulling force, and screw axial bearing capacity is strong, and the screw receives the axial force and hardly splits, has strengthened the security of braking.

Preferably, the number of the first mounting columns and the number of the first threaded holes are two.

Through above-mentioned technical scheme, can prevent that first calliper from rotating.

Preferably, the number of the second mounting columns and the number of the second threaded holes are two.

Through above-mentioned technical scheme, can prevent that second calliper from rotating.

To sum up, the beneficial effect that this application has: after the foldable bicycle is used up, the first buckle separates the front section and the rear section of the front tripod, and enables the front section and the rear section to rotate along the hinge at the first joint, so that the folding of the front tripod is completed;

Drawings

FIG. 1 is a structural view of an embodiment of the present application;

FIG. 2 is a partial view of a front fork column mounting structure of an embodiment of the present application;

fig. 3 is a partial view of a rear tripod pillar mounting structure of an embodiment of the present application;

FIG. 4 is a structural view of a first hub of an embodiment of the present application;

FIG. 5 is a structural view of a second hub of an embodiment of the present application;

FIG. 6 is a partial view of a front fork bed mount structure of an embodiment of the present application;

fig. 7 is a partial view of a rear tripod flush mounting structure of an embodiment of the present application.

Reference numerals: 1. a seat tube; 2. a front tripod; 21. a front section; 22. a rear section; 3. a rear tripod; 31. A rear wheel; 32. a first mounting post; 33. a first threaded hole; 4. a first pipe; 41. an upper section; 42. a lower section; 5. a first buckle; 6. a second buckle; 7. a front fork; 71. a front wheel; 72. a second mounting post; 73. a second threaded hole; 8. a first caliper; 9. a front brake disc; 10. a second caliper; 11. a rear brake disc; 12. A third buckle; 13. a first abutting surface; 14. a second abutting surface; 15. a first mounting surface; 16. a first fixing surface; 17. a second stationary surface; 18. a second mounting surface; 19. a first hub; 20. a second hub; 201. and (4) a tower footing.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

A folding bicycle, see fig. 1 to 7, comprising a frame, said frame comprising a seat tube 1, a front tripod 2 and a rear tripod 3, said front tripod 2 being provided with a first joint dividing the front tripod 2 into a front section 21 and a rear section 22 articulated with each other, said front tripod 2 being provided with a first buckle 5 connecting and separating said front section 21 and said rear section 22; one vertex angle of the rear tripod 3 is hinged with the lower end of the seat tube 1, and a second buckle 6 for connecting and separating the rear tripod 3 and the seat tube 1 is arranged between the other vertex angle of the rear tripod 3 and the upper end of the seat tube 1; the front tripod 2 is rotatably connected with a front fork 7, a head pipe 4 for mounting a handlebar extends upwards from the front fork 7, the head pipe 4 is provided with a second joint, the second joint divides the head pipe 4 into an upper section 41 and a lower section 42 which are hinged with each other, and the head pipe 4 is provided with a third buckle 12 for connecting and separating the upper section 41 and the lower section 42; the front fork 7 is provided with a front wheel 71, the front wheel 71 is fixedly connected with a front brake disc 9, and the front fork 7 is provided with a first caliper 8 which is in clamping fit with the front brake disc 9; rear wheel 31 is installed to rear tripod 3, rear wheel 31 coaxial fixedly connected with back brake disc 11, rear tripod 3 is installed and is pressed from both sides tight cooperation second calliper 10 of back brake disc 11.

After the foldable bicycle is used up, the first buckle 5 separates the front section 21 and the rear section 22 of the front tripod 2, and enables the front section 21 and the rear section 22 to rotate along the hinge at the first joint, so as to complete the folding of the front tripod 2; the second buckle 6 separates the other vertex angle of the rear tripod 3 from the upper end of the seat tube 1, and enables one vertex angle of the rear tripod 3 to rotate along the hinge at the lower end of the seat tube 1 and one vertex angle of the rear tripod 3, so as to complete the folding of the rear tripod 3; the third buckle 12 separates the upper section 41 from the lower section 42 of the first pipe 4, and makes the upper section 41 of the first pipe 4 rotate along the hinge at the second joint, so as to complete the folding of the first pipe 4; after the whole folding bicycle is folded, the folding bicycle is convenient to move and store; the disc brake is arranged between the front wheel 71 and the front fork 7 and between the rear wheel 31 and the rear tripod 3, so that the brake effect of the bicycle is enhanced, the disc brake cannot easily slip in rainy days, muddy lands or wading roads, and the tire cannot be locked due to too large brake force, so that safety accidents are avoided.

Specifically, the front wheel 71 includes a first hub 19 provided at an axial center of the front wheel 71, the first hub 19 is provided with two first attachment surfaces 15, the first attachment surfaces 15 are perpendicular to the axial center of the first hub 19, a distance between the two first attachment surfaces 15 is h1 ═ 74mm, the front fork 7 is provided with two first contact surfaces 13 for clamping the first hub 19, and a distance between the two first contact surfaces 13 is h5 ═ 74 mm; the first hub 19 is further provided with a first fixing surface 16 for mounting the front brake disc 9, the first fixing surface 16 is parallel to the first mounting surface 15, and the distance h2 between the first fixing surface 16 and the first mounting surface 15 close to the first fixing surface is 10.5 mm.

The size of the first hub 19 is adjusted to a certain extent through redesigning the first hub 19, and the size of the front fork 7 is adjusted according to the adjusted size of the first hub 19, so that the disc brake can be reasonably installed between the front wheel 71 and the front fork 7.

Specifically, the rear wheel 31 includes a second hub 20 provided at an axial center of the rear wheel 31, the second hub 20 is provided with two second mounting surfaces 18, the second mounting surface 18 is perpendicular to the axial center of the second hub 20, a distance between the two second mounting surfaces 18 is h3 ═ 112mm, the rear tripod 3 is provided with two second contact surfaces 14 for clamping the second hub 20, and a distance between the second contact surfaces 14 is h6 ═ 112 mm; the second hub 20 is further provided with a second fixing surface 17 for mounting the rear brake disc 11, the second fixing surface 17 is parallel to the second mounting surface 18, and the distance h4 between the second fixing surface 17 and the second mounting surface 18 close to the second fixing surface is 15.3 mm.

Through the redesign to second flower-drum 20, certain adjustment has been carried out to the size of second flower-drum 20, adjusts the size of rear tripod 3 according to the size after the adjustment of second flower-drum 20, makes the dish stop can be reasonable install between rear wheel 31 and rear tripod 3.

Specifically, the front fork 7 is provided with a first mounting column 32, the first mounting column 32 is coaxially provided with a first threaded hole 33, the axis of the first threaded hole 33 is parallel to the front brake disc 9, and the first caliper 8 is fixed to the first threaded hole 33 through a screw.

The first caliper 8 is fixed on the first mounting column 32 of the front fork 7, and the axis of the first threaded hole 33 is parallel to the front brake disc 9, so that when the front wheel 71 is braked, the screw for fixing the first caliper 8 receives circumferential tension, the axial bearing capacity of the screw is strong, the screw is difficult to break under the action of circumferential force, and the safety of braking is enhanced.

According to actual conditions, the first caliper 8 can be installed flatly, the axis of the installation screw is perpendicular to the surface of the front brake disc 9, the flatly installed mode is adopted, enough wrench size can be reserved, and replacement of the first caliper 8 is facilitated.

Specifically, the rear tripod 3 is provided with a second mounting column 72, the second mounting column 72 is coaxially provided with a second threaded hole 73, the axis of the second threaded hole 73 is parallel to the rear brake disc 11, and the caliper is fixed to the second threaded hole 73 through a screw.

The second caliper 10 is fixed on the second mounting column 72 of the front fork 7, and the axis of the second threaded hole 73 is parallel to the rear brake disc 11, so that when the brake is carried out, the screw for fixing the second caliper 10 receives circumferential tension, the axial bearing capacity of the screw is strong, the screw is difficult to break under the action of axial force, and the safety of the brake is enhanced.

According to actual conditions, the second caliper 10 can be horizontally installed, the axis of the installation screw is perpendicular to the surface of the rear brake disc 11, and the second caliper 10 can be replaced conveniently by keeping enough wrench size in a horizontally installed mode.

Specifically, two first mounting posts 32 and two first threaded holes 33 are provided. The first caliper 8 can be prevented from rotating.

Specifically, two second mounting posts 72 and two second threaded holes 73 are provided. The second caliper 10 can be prevented from rotating.

Specifically, the second hub 20 includes a tower base 201 for mounting a rear flywheel (not shown) of a bicycle, and the tower base 201 can mount a rear flywheel of three-speed to seven-speed.

The above-mentioned embodiments are merely illustrative and not restrictive, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but only protected by the patent laws within the scope of the claims of the present application.

Claims

1. A folding bicycle is characterized in that: the bicycle frame comprises a frame body, wherein the frame body comprises a seat tube (1), a front tripod (2) and a rear tripod (3), the front tripod (2) is provided with a first joint, the first joint divides the front tripod (2) into a front section (21) and a rear section (22) which are hinged with each other, and the front tripod (2) is provided with a first buckle (5) for connecting and separating the front section (21) and the rear section (22);

one vertex angle of the rear tripod (3) is hinged with the lower end of the seat tube (1), and a second buckle (6) for connecting and separating the rear tripod (3) and the seat tube (1) is arranged between the other vertex angle of the rear tripod (3) and the upper end of the seat tube (1);

the front tripod (2) is rotatably connected with a front fork (7), a first pipe (4) for mounting a handlebar extends upwards from the front fork (7), the first pipe (4) is provided with a second joint, the second joint divides the first pipe (4) into an upper section (41) and a lower section (42) which are mutually hinged, and the first pipe (4) is provided with a third buckle (12) for connecting and separating the upper section (41) and the lower section (42);

the front fork (7) is provided with a front wheel (71), the front wheel (71) is fixedly connected with a front brake disc (9), and the front fork (7) is provided with a first caliper (8) which is in clamping fit with the front brake disc (9);

rear wheel (31) are installed in rear tripod (3), rear wheel (31) coaxial fixedly connected with back brake disc (11), back tripod (3) are installed and are pressed from both sides tight cooperation second calliper (10) of back brake disc (11).

2. The foldable bicycle as in claim 1, wherein: the front wheel (71) comprises a first hub (19) arranged at the axle center of the front wheel (71), the first hub (19) is provided with two first mounting surfaces (15), the first mounting surfaces (15) are perpendicular to the axle center of the first hub (19), and the front fork (7) is provided with two first abutting surfaces (13) for clamping the first hub (19); the first hub (19) is further provided with a first fixing surface (16) for mounting the front brake disc (9), and the first fixing surface (16) is parallel to the first mounting surface (15).

3. The foldable bicycle as in claim 1, wherein: rear wheel (31) are including locating second flower-drum (20) in rear wheel (31) axle center, second flower-drum (20) are equipped with two second installation faces (18), second installation face (18) with second flower-drum (20) axle center is perpendicular, front fork (7) are equipped with the clamp two second butt faces (14) of second flower-drum (20), second flower-drum (20) still are equipped with the installation second fixed surface (17) of back brake disc (11), second fixed surface (17) with second installation face (18) are parallel.

4. The foldable bicycle as in claim 1, wherein: the front fork (7) is provided with a first mounting column (32), the first mounting column (32) is coaxially provided with a first threaded hole (33), the axis of the first threaded hole (33) is parallel to the front brake disc (9), and the first caliper (8) is fixed to the first threaded hole (33) through a screw.

5. The foldable bicycle as in claim 1, wherein: the rear tripod (3) is provided with a second mounting column (72), the second mounting column (72) is coaxially provided with a second threaded hole (73), the axis of the second threaded hole (73) is parallel to the rear brake disc (11), and the caliper is fixed in the second threaded hole (73) through a screw.

6. The foldable bicycle as in claim 4, wherein: the number of the first mounting columns (32) and the number of the first threaded holes (33) are two.

7. The foldable bicycle as in claim 5, wherein: the number of the second mounting columns (72) and the number of the second threaded holes (73) are two.