CN211766100U - Chainless bicycle - Google Patents

Abstract

The utility model discloses a chainless bicycle. The motion of the bicycle is transmitted to the through shaft through the pedals, and under the cooperation of the shaft sleeve and the bearing, the rotation of the through shaft is more efficient. Smooth, because the root keyway on the through shaft meshes with the one-way flywheel at the center of the front wheel, the through shaft drives the one-way flywheel to rotate, and then the one-way flywheel drives the front wheel to rotate, thereby achieving no In the movement of chain bicycles, by using shaft transmission instead of chain transmission, the bicycle will not be de-chained, and the reliability is higher; and the shaft transmission friction force of the bicycle basically does not work, and its transmission efficiency is allowed under the conditions of processing and assembly. It can reach 100%, the transmission efficiency is higher, and the shaft transmission structure of the bicycle occupies less space than the chain transmission structure, the structure is more compact, and the body is small, making it lighter and more economical.

Description

a chainless bicycle

technical field

The utility model relates to the technical field of bicycles, in particular to a chainless bicycle.

Background technique

At present, bicycles are people's daily necessities. The main use is the chain drive mechanism. The chain drive has the advantages of simple manufacture, convenient installation and maintenance, etc., but the chain drive has disadvantages such as easy disconnection, poor reliability, and low transmission efficiency.

Utility model content

The purpose of the utility model is to provide a chainless bicycle, which aims to solve the problems of the chain drive in the prior art, such as easy off-chain, poor reliability, low transmission efficiency, large space occupied by the chain drive structure, insufficient weight and insufficient structure. Compact technical issues.

In order to achieve the above purpose, a chainless bicycle adopted by the present invention includes a frame, a seat, a handlebar, a front wheel, a rear wheel and a pedal, and the seat is detachably connected to the frame, and is located in the above the frame;

The handlebar includes a fork, a handle, a front fork, a through shaft, a shaft sleeve and a bearing, the fork is fixedly connected with the frame, the handle is fixedly connected with the fork, and is located at the Above the fork, the number of the front forks is two, the two front forks are respectively fixedly connected to the fork, and are located at the end of the fork away from the handle, and two The front forks are arranged opposite to each other along the axial line of the fork, each of the front forks has a small hole, the front wheel is arranged between the two front forks, and the through shaft has a root A keyway, the through shaft penetrates through the small hole and the center of the front wheel, the root keyway on the through shaft is adapted to the one-way flywheel at the center of the front wheel, and the through shaft is Both ends are respectively detachably connected to the pedals, the shaft sleeve is sleeved on the through shaft and is located on both outer sides of the front wheel, the bearing is rotatably connected to the shaft sleeve, and the bearing is located on the Inside the small hole, the rear wheel is detachably connected to the frame.

Wherein, the handle includes a connecting piece and a handle body, the connecting piece is detachably connected to the bifurcator, and is located above the bifurcator, the number of the handle body is two, and the two said The handle bodies are respectively fixedly connected with the connecting pieces, and are arranged oppositely along the axial centerline of the connecting pieces, and each handle body includes a first bending part, a first extending part, a second bending part, a Two extending parts and inclined parts, and the first bending part, the first extending part, the second bending part, the second extending part and the inclined part are connected in sequence.

Wherein, the frame includes a support, a main beam, a steering cylinder and a support beam, one end of the main beam is fixedly connected to the support, the other end of the main beam is fixedly connected to the steering cylinder, and the The steering cylinder is rotatably connected with the connecting piece and is sleeved on the outside of the connecting piece, one end of the support beam is fixedly connected with the support, and the other end of the support beam rotates with the hub of the rear wheel connect.

Wherein, the number of angles formed between the axial line of the main beam and the axial line of the support is 90°˜130°.

Wherein, the support, the main beam, the steering cylinder and the support beam are arranged in an integral molding structure.

Wherein, the vehicle seat includes a movable rod, two first support bodies, a second support body and a seat body, one end of the movable rod is movably connected with the support, and is located inside the support, the The other end of the movable rod is respectively fixedly connected with the two first support bodies and the second support body, and the two first support bodies and the second support body are Y-shaped on the movable rod Structural arrangement, the seat body is respectively fixedly connected with the two first support bodies and the second support body.

Wherein, the vehicle seat further includes an elastic member, two ends of the elastic member are respectively fixedly connected with the first support body and the seat body, and are located between the first support body and the seat body.

Wherein, the vehicle seat further includes a U-shaped piece, the U-shaped piece is fixedly connected with the second support body and the seat body, and is located between the second support body and the seat body, and the U-shaped piece is One end of the second support body away from the movable rod penetrates through the bottom of the U-shaped piece.

Wherein, the seat body has ventilation grooves.

Wherein, the chainless bicycle further includes a seat clip, which is fixedly connected with the support and sleeved on the outside of the support.

The beneficial effect of the utility model is reflected in: the motion of the bicycle is transmitted to the through shaft through the pedal, and the rotation of the through shaft is made smoother under the cooperation of the shaft sleeve and the bearing. , because the root keyway on the through shaft meshes with the one-way flywheel at the axis of the front wheel, the through shaft drives the one-way flywheel to rotate, and then the one-way flywheel drives the front wheel to rotate, thereby realizing a chainless bicycle. By using the shaft drive instead of the chain drive, the bicycle will not appear off-chain, and the reliability is higher; and the shaft drive friction of the bicycle basically does not work, and its transmission efficiency can reach 100%, the transmission efficiency is higher, and the shaft transmission structure of the bicycle occupies less space than the chain transmission structure, the structure is more compact, and the body is small, making it lighter and more economical.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a schematic structural diagram of the chainless bicycle of the present invention.

2 is a front view of the chainless bicycle of the present invention.

3 is an enlarged view of a part of the structure of the chainless bicycle of the present invention.

Figure 4 is a schematic structural diagram of the handlebar of the present invention.

5 is a front view of the handlebar of the present invention.

6 is an enlarged view of a part of the structure of the handlebar of the present invention.

7 is a schematic structural diagram of the vehicle frame of the present invention.

8 is a front view of the vehicle frame of the present invention.

9 is a schematic structural diagram of the vehicle seat of the present invention.

10 is a structural cross-sectional view of the vehicle seat of the present invention.

Figure 11 is a schematic structural diagram of the seat clip of the present invention.

100-chainless bicycle, 10-frame, 11-support, 12-main beam, 13-steering cylinder, 14-support beam, 20-car seat, 21-active rod, 22-first support body, 23- Second support body, 24-seat body, 241-ventilation groove, 25-elastic part, 26-U-shaped part, 30-handlebar, 31-fork, 32-handle, 321-connector, 322-handle body , 323-first bending part, 324-first extension part, 325-second bending part, 326-second extension part, 327-inclined part, 33-front fork, 331-hole, 34-through shaft , 341-root keyway, 35-shaft sleeve, 36-bearing, 40-front wheel, 50-rear wheel, 60-foot pedal, 70-seat clip.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present invention, but should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical" , "horizontal", "top", "bottom", "inside", "outside" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, only for the convenience of describing the present utility model and simplifying the description, Rather than indicating or implying that the indicated device or element must have a particular orientation, be constructed and operate in a particular orientation, it should not be construed as a limitation of the present invention. In addition, in the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

1 to 11, the present invention provides a chainless bicycle 100, including a frame 10, a seat 20, a handlebar 30, a front wheel 40, a rear wheel 50 and a pedal 60, the seat 20 Removably connected to the frame 10 and located above the frame 10;

The handlebar 30 includes a fork 31, a handle 32, a front fork 33, a through shaft 34, a bushing 35 and a bearing 36. The fork 31 is fixedly connected to the frame 10, and the handle 32 is connected to the The fork 31 is fixedly connected and located above the fork 31 , the number of the front forks 33 is two, and the two front forks 33 are respectively fixedly connected to the fork 31 and located at the top of the fork 31 . One end of the bifurcator 31 away from the handle 32, and the two front forks 33 are arranged opposite to each other along the axial line of the bifurcator 31, each of the front forks 33 has a small hole 331, so The front wheel 40 is arranged between the two front forks 33, the through shaft 34 has a key slot 341, the through shaft 34 passes through the small hole 331 and the center of the front wheel 40, the The root keyway 341 on the through shaft 34 is adapted to the one-way flywheel at the center of the front wheel 40 , and the two ends of the through shaft 34 are respectively detachably connected to the pedals 60 , and the shaft sleeve 35 The bearing 36 is rotatably connected with the shaft sleeve 35, and the bearing 36 is located in the small hole 331, and the rear wheel 50 Removably connected to the frame 10 .

In this embodiment, the tight connection between the pedal 60 and the through shaft 34 is achieved by a tightening nut disposed at the outermost end of the connection between the pedal 60 and the through shaft 34,

The motion of the bicycle is transmitted to the through shaft 34 through the pedal 60, and under the cooperation of the shaft sleeve 35 and the bearing 36, the rotation of the through shaft 34 is made smoother. The root keyway 341 on the through shaft 34 meshes with the one-way flywheel at the axis of the front wheel 40, the through shaft 34 drives the one-way flywheel in the front wheel 40 to rotate, and then the one-way flywheel drives the front wheel. 40 rotations to achieve the movement of the chainless bicycle 100, and because of the one-way flywheel used in the front wheel drive, the bicycle does not have to follow the foot when it is moving downhill, which is more convenient and also The front wheel 40 will not be used for braking like a dead fly, so only the rear wheel 50 is equipped with a rear brake, which reduces the overall weight of the bicycle and at the same time ensures the reliability of the bicycle; at the same time, by using shaft transmission Instead of chain transmission, the bicycle will not be de-chained, and the reliability will be higher; and the friction force of the shaft transmission of the bicycle basically does not work, and the transmission efficiency can reach 100% under the conditions of processing and assembly, and the transmission efficiency is higher. Compared with the chain drive structure, the shaft transmission structure of the bicycle occupies less space, the structure is more compact, and the body is simple, making it more lightweight and economical. In addition, by arranging the bearing 36 in the small hole 331, the cooperation between the bearing 36 and the shaft sleeve 35 can be made more firm; The connection between 33 is provided with shock absorbers respectively, so that the bicycle can be more stable when riding on a steep road; and the position of the seat 20 is calculated, and the center of gravity of the human body is guaranteed to be on the front wheel. 40 and the rear wheel 50, so it is not easy to roll forward or backward, which ensures the stability of the bicycle.

Further, the handle 32 includes a connecting piece 321 and a handle body 322. The connecting piece 321 is detachably connected to the fork 31 and is located above the fork 31. The number of the handle body 322 The two handle bodies 322 are fixedly connected to the connecting piece 321 respectively, and are arranged opposite to each other along the axial centerline of the connecting piece 321, and each of the handle bodies 322 includes a first bending portion 323 , the first extension part 324, the second bending part 325, the second extension part 326 and the inclined part 327, and the first bending part 323, the first extension part 324, the second bending part 325 , the second extending portion 326 and the inclined portion 327 are connected in sequence.

In this embodiment, the connection between each handle 32 and the bifurcator 31 is achieved through the connecting piece 321, and each handle 32 is divided into the first bending portion 323. The first extension portion 324, the second bending portion 325, the second extension portion 326 and the inclined portion 327, and the bending angle of the first bending portion 323 is 90°, The first extension part 324 is used to connect the first bending part 323 and the second bending part 325 , the bending angle of the second bending part 325 is also 90°, and the first bending part 325 is The bent portion 323 and the second bent portion 325 are not on the same plane, and the second extension portion 326 is used to connect the second bent portion 325 and the inclined portion 327, and the inclined portion 327 is equivalent Compared with the second extending portion 326 , the inclined portion 327 is inclined downward in a position where it is convenient for the hands to hold when people ride the bicycle, which is beneficial for people to hold the bicycle better. The first bending portion 323 , the first extending portion 324 , the second bending portion 325 , the second extending portion 326 and the inclined portion 327 are all integrally formed and formed to form the handle body. 322, the handle 32 is arranged in this shape, which is beneficial to leave room for the legs to rotate, even people with long legs will not touch the handle 32 because the front wheel 40 is too far back, and the design is more Reasonable and more humane.

Further, the frame 10 includes a support 11 , a main beam 12 , a steering cylinder 13 and a support beam 14 , one end of the main beam 12 is fixedly connected to the support 11 , and the other end of the main beam 12 is connected to the support 11 . The steering cylinder 13 is fixedly connected, the steering cylinder 13 is rotatably connected with the connecting piece 321, and is sleeved on the outside of the connecting piece 321, and one end of the support beam 14 is fixedly connected with the support 11, The other end of the support beam 14 is rotatably connected with the hub of the rear wheel 50 .

In this embodiment, the support 11 is used to support the seat 20, and the main beam 12 and the cross beam are connected with the support 11, so that the bicycle has a better load-bearing capacity It can withstand the weight of the human body, and at the same time, the movement of the chainless bicycle 100 can be ensured through the cooperation of the main beam 12, the steering cylinder 13, the support beam 14, the front wheel 40 and the rear wheel 50. In order to ensure the structural integrity and compactness of the chainless bicycle 100, the number of the support beams 14 is set to two, which can improve the structural strength of the chainless bicycle 100, so The bicycle frame 10 further includes a tripod, which is movably connected to the support beam 14. When the bicycle is parked and placed, the tripod can be lowered to support the bicycle.

Further, the number of angles formed between the axial line of the main beam 12 and the axial line of the support 11 is 90°˜130°.

In this embodiment, the angle formed between the axial line of the main beam 12 and the axial line of the support 11 is set to 120°, so that the main beam 12 and the support 11 can better disperse the weight of the human body on the seat 20, thereby making the chainless bicycle 100 better in bearing capacity.

Further, the support 11 , the main beam 12 , the steering cylinder 13 and the support beam 14 are provided in an integral molding structure.

In this embodiment, the support 11 , the main beam 12 , the steering drum 13 and the support beam 14 are provided in an integral molding structure, so that the structural strength of the vehicle frame 10 can be further improved.

Further, the vehicle seat 20 includes a movable rod 21 , two first support bodies 22 , a second support body 23 and a seat body 24 . One end of the movable rod 21 is movably connected with the support 11 and is located at the Inside the support 11, the other end of the movable rod 21 is fixedly connected to the two first support bodies 22 and the second support bodies 23, respectively, and the two first support bodies 22 and the two The second support body 23 is arranged on the movable rod 21 in a Y-shaped structure, and the seat body 24 is fixedly connected to the two first support bodies 22 and the second support body 23 respectively.

In this embodiment, the movable rod 21 is movably connected to the support 11 , which is beneficial to adjust the height of the base 24 so as to accommodate people of different heights, and the two first support bodies 22 And the second support body 23 is arranged in a Y-shaped structure on the movable rod 21, which can fix the seat body 24 more firmly and is not easy to loosen, so that the quality of the chainless bicycle 100 is better and more reliable. Sex is higher.

Further, the vehicle seat 20 further includes an elastic member 25, two ends of the elastic member 25 are fixedly connected to the first support body 22 and the seat body 24, respectively, and are located between the first support body 22 and the seat body 24. between the seats 24 . The vehicle seat 20 further includes a U-shaped piece 26, the U-shaped piece 26 is fixedly connected with the second support body 23 and the seat body 24, and is located at the second support body 23 and the seat body 24 and the end of the second support body 23 away from the movable rod 21 penetrates through the bottom of the U-shaped member 26 .

In this embodiment, the elastic member 25 is a compression spring, and by arranging the elastic member 25 between the first support body 22 and the seat body 24, the shock resistance of the seat body 24 can be improved, When the bicycle is riding on a steep road, the elastic member 25 can reduce the vibration of the seat body 24, thereby making the person sitting on the seat 20 more comfortable. At the same time, the arrangement of the U-shaped piece 26 can also improve the shock resistance of the seat body 24. Through the cooperation of the elastic piece 25 and the U-shaped piece 26, the shock resistance of the seat body 24 can be further improved. It makes the person sitting on the vehicle seat 20 more comfortable.

Further, the seat body 24 has ventilation grooves 241 .

In this embodiment, the arrangement of the ventilation holes can increase the air circulation between the buttocks of the human body and the seat body 24, so as to prevent the human body from sitting on the seat body 24 for a long time, the buttocks and the seat body Bonding phenomenon occurs between 24.

Further, the chainless bicycle 100 further includes a seat clip 70 , the seat clip 70 is fixedly connected with the support 11 and is sleeved on the outside of the support 11 .

In this embodiment, when people need to adjust the height of the seat body 24 , they can move the movable part of the seat clip 70 , and then slide the movable rod 21 on the support 11 to adjust the height of the seat body 24 . After the height of the seat body 24 is determined, the movable part on the seat clip 70 can be reset, so that the height of the seat body 24 can be fixed.

What has been disclosed above is only a preferred embodiment of the present invention, and of course it cannot limit the scope of the rights of the present invention. Those of ordinary skill in the art can understand that all or part of the process for realizing the above-mentioned embodiment can be implemented according to the present invention. The equivalent changes made by the claims of the utility model still belong to the scope covered by the utility model.

Claims (10)

1. A chainless bicycle, characterized in that, comprising a vehicle frame, a vehicle seat, a handlebar, a front wheel, a rear wheel and a pedal, the vehicle seat is detachably connected to the vehicle frame, and is located above the vehicle frame; The handlebar includes a fork, a handle, a front fork, a through shaft, a shaft sleeve and a bearing, the fork is fixedly connected with the frame, the handle is fixedly connected with the fork, and is located at the Above the fork, the number of the front forks is two, the two front forks are respectively fixedly connected to the fork, and are located at the end of the fork away from the handle, and two The front forks are arranged opposite to each other along the axial line of the fork, each of the front forks has a small hole, the front wheel is arranged between the two front forks, and the through shaft has a root A keyway, the through shaft penetrates through the small hole and the center of the front wheel, the root keyway on the through shaft is adapted to the one-way flywheel at the center of the front wheel, and the through shaft is Both ends are respectively detachably connected to the pedals, the shaft sleeve is sleeved on the through shaft and is located on both outer sides of the front wheel, the bearing is rotatably connected to the shaft sleeve, and the bearing is located on the Inside the small hole, the rear wheel is detachably connected to the frame. 2. The chainless bicycle of claim 1, wherein The handle includes a connecting piece and a handle body, the connecting piece is detachably connected to the bifurcator, and is located above the bifurcator, the number of the handle body is two, and the number of the two handle bodies is two. They are respectively fixedly connected with the connecting pieces, and are arranged oppositely along the axial centerline of the connecting pieces. The first bending part, the first extending part, the second bending part, the second extending part and the inclined part are connected in sequence. 3. The chainless bicycle of claim 2, wherein The frame includes a support, a main beam, a steering cylinder and a support beam. One end of the main beam is fixedly connected to the support, and the other end of the main beam is fixedly connected to the steering cylinder. One end of the support beam is fixedly connected with the support, and the other end of the support beam is rotatably connected with the hub of the rear wheel. 4. The chainless bicycle of claim 3, wherein The number of included angles formed between the axial line of the main beam and the axial line of the support is 90°˜130°. 5. The chainless bicycle of claim 4, wherein The support, the main beam, the steering cylinder and the support beam are arranged in an integral molding structure. 6. The chainless bicycle according to any one of claims 3 to 5, characterized in that, The vehicle seat includes a movable rod, two first support bodies, a second support body and a seat body, one end of the movable rod is movably connected with the support, and is located inside the support, the movable rod The other ends are respectively fixedly connected with the two first support bodies and the second support bodies, and the two first support bodies and the second support bodies are arranged in a Y-shaped structure on the movable rod , the seat body is respectively fixedly connected with the two first support bodies and the second support body. 7. The chainless bicycle of claim 6, wherein The vehicle seat further includes an elastic member, two ends of the elastic member are respectively fixedly connected with the first support body and the seat body, and are located between the first support body and the seat body. 8. The chainless bicycle of claim 7, wherein The vehicle seat further includes a U-shaped piece, the U-shaped piece is fixedly connected with the second support body and the seat body, and is located between the second support body and the seat body, and the first One end of the two supports away from the movable rod penetrates through the bottom of the U-shaped piece. 9. The chainless bicycle of claim 8, wherein The seat body has ventilation grooves. 10. The chainless bicycle of claim 9, wherein The chainless bicycle further includes a seat clip, which is fixedly connected with the support and sleeved on the outside of the support.

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