CN111452896A

CN111452896A - Bicycle with a wheel

Info

Publication number: CN111452896A
Application number: CN202010197836.0A
Authority: CN
Inventors: 朱涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2020-07-28
Anticipated expiration: 2040-03-19
Also published as: CN111452896B

Abstract

The invention provides a bicycle, which comprises a main frame, a front wheel, a rear wheel, a saddle, a pedal part and a brake device, wherein the main frame comprises a circular tube and an inner tube sleeved in the circular tube; the rear wheel is arranged behind the main frame, and the diameter of the rear wheel is larger than that of the front wheel; the pedal part is arranged in front of the main frame, and the pedal part is in transmission connection with the rear wheel through a chain; the brake device is mounted on the rear wheel. The bicycle provided by the invention has the advantages that the body structure of the traditional bicycle is simplified, the front fork and the bent handle are removed, the materials are reduced, the volume is reduced, and the storage space is saved; move the front wheel mounted position backward to main frame below, rely on the strength of buttock and thigh to rotate the saddle and drive the front wheel and turn to, can liberate both hands, let ride more comfortable convenient.

Description

Bicycle with a wheel

Technical Field

The invention belongs to the field of bicycles.

Background

With the increasing awareness of environmental protection and health of people, the urban traffic jam and the wide popularization and use of shared bicycles are simultaneously realized. More and more people select bicycles as vehicles, and especially bicycles for short-distance vehicles are used more and more frequently. The structure of the traditional bicycle comprises a front wheel, a rear wheel, a front fork, a bent handle, a frame, a seat and a transmission system; the steering handle controls the front wheel to steer, and the rear wheel drives the bicycle to move forwards. The bicycle body composition of the traditional bicycle does not change greatly for many years, and has the defects of large material consumption, simple structure, large storage space occupation, fatigue feeling of both hands after long-time riding, incapability of controlling steering by releasing both hands, insufficient riding comfort and the like.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a bicycle, which aims to solve the problems that the existing bicycle is not simple enough in structure, more in material consumption, large in storage space occupation and fatigue of hands caused by long-time riding.

The invention provides a scheme for solving the technical problem, which comprises the following steps: a bicycle comprises a main frame, a front wheel, a rear wheel, a saddle, a pedal part and a brake device, wherein the main frame comprises a circular tube, an inner tube sleeved in the circular tube, an auxiliary tube connected to the circular tube and extending forwards, and a rear wheel bracket connected to the rear part of the circular tube, and the inner tube is matched with the circular tube through a bearing and is in rotating connection with the circular tube; the front wheel is arranged on a front wheel bracket, and the front wheel bracket is fixedly connected with the bottom of the inner tube; the bottom of the saddle is connected with a seat tube, and the seat tube is fixedly connected with the top of the inner tube through a buckle; the rear wheel is arranged on the rear wheel bracket, and the diameter of the rear wheel is larger than that of the front wheel; the pedal part is arranged at the front end of the auxiliary pipe and is in transmission connection with the rear wheel through a chain wheel and a chain; and the brake device is arranged on the rear wheel and the rear wheel bracket.

Furthermore, external threads are arranged at two ends of the inner pipe, and the external threads at the lower end of the bottom of the inner pipe are matched and fixedly connected with the internal threads arranged on the front wheel bracket; the inner pipe between the top end face of the inner pipe and the upper end external thread is a small-diameter part, the inner pipe between the upper end external thread and the lower end external thread is a large-diameter part, and the diameter of the small-diameter part is smaller than that of the large-diameter part; the top of the small-diameter part is provided with a notch, and the buckle is arranged at a position close to the notch and used for adjusting the depth of the seat tube inserted into the inner tube; the upper end external thread is connected with a locking nut sleeved on the inner pipe in a matching manner.

Further, the both ends of pipe all embed there is the bearing mount pad, the bearing mount pad with the pipe tight fit, both ends equal fixed mounting has in the bearing mount pad the bearing, the outer lane of bearing with the bearing mount pad tight fit, the inner tube passes both ends the bearing and with the inner circle tight fit of bearing, both ends the end cover is all installed to the bearing outer end, the inner circle contact of end cover and bearing, lock nut's lower extreme and upper end bearing end cap looks butt, front wheel support and lower extreme bearing end cap looks butt.

Furthermore, the bearing seats at the two ends respectively comprise outer edge parts, the outer edge parts are higher than the end faces of the circular tubes, the outer diameters of the outer edge parts are the same as the outer diameters of the circular tubes, and the inner end faces of the outer edge parts are abutted to the end faces of the circular tubes.

Furthermore, the number of the front wheels is two, the two front wheels are symmetrically arranged on two sides of the front wheel support, the two front wheels are connected through a wheel shaft, and the wheel shaft is connected with the front wheel support.

Or the front wheel comprises one, and the front wheel is installed at the middle of the front wheel bracket and is rotatably connected with the front wheel bracket through a wheel axle.

Furthermore, in order to limit the turning angle of the front wheel, two limit blocks are arranged at the bottom of the circular tube at intervals along the circumferential direction, a stop block is arranged at the position, opposite to the two limit blocks, on the front wheel support, and the stop block is positioned between the two limit blocks.

Further, brake equipment is including installing the brake on the rear wheel support and installing the dish on the rear wheel hub and stopping the piece, control brake equipment's brake is installed and is located on the pipe of the below of saddle and be close to the saddle setting, the brake is through brake line control brake and brake piece move.

Furthermore, the circular tube is also connected with a handrail support extending forwards, two ends of the handrail support are respectively provided with a handrail, and a brake handle for controlling the brake is arranged at a position close to one handrail.

Compared with the prior art, the invention can produce the following technical effects: the bicycle provided by the invention has the advantages that the bicycle body structure is simplified and designed, the front fork and the bent handle are removed, the material consumption is reduced, and the storage space is saved; move the front wheel mounted position backward to main frame below, rely on the strength of buttock and thigh to rotate the saddle and drive the front wheel and turn to, can liberate both hands, let ride more comfortable convenient.

Drawings

FIG. 1 is a schematic structural view of a first embodiment of a bicycle in accordance with the present invention;

FIG. 2 is a cross-sectional view taken along the cross-sectional direction of the pipe in FIG. 1;

FIG. 3 is a schematic structural view of the inner tube of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 2 at A;

FIG. 5 is an enlarged partial view at B in FIG. 2;

FIG. 6 is a schematic structural view of the front wheel carrier of FIG. 1;

FIG. 7 is a schematic structural diagram of a second embodiment of the bicycle provided in accordance with the present invention;

FIG. 8 is a schematic structural view of the front wheel carrier of FIG. 7;

FIG. 9 is a schematic structural diagram of a third embodiment of the bicycle of the present invention.

Description of reference numerals:

1-main frame, 2-round tube, 3-saddle, 4-brake cable, 5-rear wheel, 6 '-front wheel, 7' -front wheel support, 8-pedal part, 9-auxiliary tube, 10-inner tube, 11-upper end bearing mounting seat, 12-upper end bearing, 13-upper end cover, 14-locking nut, 15-buckle, 16-seat tube, 17-lower end cover, 18-lower end bearing mounting seat, 19-lower end bearing, 20-mounting support, 21-brake handle, 22-rear wheel support, 23-disc brake sheet, 24-brake, 25-armrest support, 26-armrest, 101-upper end screw thread, 102-lower end screw thread, 103-small pipe diameter part, 104-large pipe diameter part, 105-notch, 71-stop, 72-internal thread.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further 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 invention and are not intended to limit the invention.

In order to solve the problems that the existing bicycle is not simple enough in structure, high in material consumption, large in storage space occupation and fatigue of hands caused by long-time riding, the invention provides the bicycle, which is simple in structure, capable of removing a front fork and a bent handle, reducing material consumption, saving storage space, freeing hands and improving the comfort level of the hands during long-time riding. See in particular fig. 1-9.

Example one

As shown in fig. 1, a bicycle includes a main frame 1, a front wheel 6, a rear wheel 5, a seat 3, a pedal portion 8, and a brake device. The main frame 1 comprises a round pipe 2, a sleeve arranged on the inner pipe 10 in the round pipe 2, an auxiliary pipe 9 connected to the round pipe 2 and extending forward and a rear wheel support 22 connected to the rear of the round pipe 2.

The auxiliary tube 9 is preferably welded to the circular tube 1, and the auxiliary tube 9 preferably extends horizontally forward. The inner tube 10 and the circular tube 2 are matched and rotatably connected through a bearing, and a front wheel support 7 for mounting the front wheel 6 is fixedly connected with the bottom of the inner tube 10. The bottom of the saddle 3 is connected with a seat tube 16, and the seat tube 16 is inserted in the inner tube 10 and is fixedly connected with the top of the inner tube 10 through a buckle 15.

The rear of the circular tube 2 is connected with a rear wheel bracket 22 for mounting the rear wheel 5, and the diameter of the rear wheel 5 is larger than that of the front wheel 6.

The pedal part 8 is installed at the front end of the auxiliary pipe 9, the pedal part 8 comprises a crank, a driving sprocket, a pedal and the like, the specific structure is the prior art, and detailed description is not provided. The pedal part 8 is in transmission connection with the rear wheel 5 through a chain wheel and a chain.

The brake device is arranged on the rear wheel 5 and the rear wheel bracket 22, and a brake handle 21 for controlling the brake device is arranged on the circular tube 1 and close to the saddle 3. The brake device comprises a brake 24 mounted on the rear wheel bracket 5 and a disc brake pad 23 mounted on the rear wheel hub. A brake handle 21 for controlling the brake 24 and the disc brake 23 to act is arranged on the round tube 2 at a position close to the saddle 3, and the brake handle 21 controls the brake device to act through a brake cable.

When riding, feet are placed on the pedals to be trampled, and the pedals are transmitted to the rear wheel 5 through the chain wheel and the chain so that the rear wheel 5 is used as a driving wheel, and meanwhile, the saddle 3 is twisted by the force of the buttocks and thighs to drive the inner tube 10 to rotate so as to drive the front wheel 6 to rotate to steer. The braking of the rear wheel 5 of the bicycle can be controlled by controlling the brake lever 21 located under the seat 3. On the basis of the traditional bicycle, the front wheel 6 is arranged below the main frame 1, so that the space occupied by the bicycle is reduced, and the arrangement of a front fork and a bent handle is omitted, thereby simplifying the structure.

As shown in fig. 2 to 5, more specifically, both ends of the inner tube 10 are provided with external threads, a lower end external thread 102 at the bottom of the inner tube 10 is matched and fixedly connected with an internal thread 72 arranged on a front wheel bracket 7, and the front wheel 6 is mounted on the front wheel bracket 7. The number of the front wheels 6 is one, and one front wheel 6 is fixedly connected with the bottom of the inner pipe 10 through a front wheel bracket 7.

The inner pipe between the top end face of the inner pipe 10 and the upper end external thread 101 is a small-diameter part 103, the inner pipe between the upper end external thread 101 and the lower end external thread 102 is a large-diameter part 104, the diameter of the small-diameter part 103 is smaller than that of the large-diameter part 104, a notch 105 is formed in the top of the small-diameter part 103, and a buckle 15 for adjusting the depth of the seat pipe 16 inserted into the inner pipe 10 is further installed on the top of the inner pipe 10. The seat tube 16 is inserted into the inner tube 10, when the clip 15 clamps the gap part of the inner tube 10 to reduce the tube diameter, the seat tube 16 can be fixed in the inner tube 10, and the height of the seat tube can be adjusted by loosening the clip 15.

The both ends of pipe 2 are equallyd divide and are do not built-in have bearing

mount pad

11, 18, both ends bearing

mount pad

11, 18 with 2 tight fits of pipe, both ends equal fixed mounting has bearing 12, 19 in

bearing mount pad

11, 18, specifically is that fixed mounting has upper end bearing 12 in the bearing mount pad 11 of upper end, and fixed mounting has lower extreme bearing 19 in the bearing mount pad 18 of lower extreme. The outer rings of the upper end bearing 12 and the lower end bearing 19 are respectively in tight fit with the corresponding

bearing mounting seats

11 and 18, the inner tube 10 penetrates through the upper end bearing 12 and the lower end bearing 19 which are respectively positioned at two ends and is in tight fit with the inner rings of the upper end bearing 12 and the lower end bearing 19, and the outer ends of the upper end bearing 12 and the lower end bearing 19 are respectively and correspondingly provided with an upper end cover 13 and a lower end cover 17. The upper end thread 101 of the inner pipe 10 is connected with a locking nut 14 in a matching manner, and the lower end of the locking nut 14 is abutted against an upper end cover 13 at the upper end. The top of the front wheel bracket is abutted against the lower end cover, so that the locking function is realized. By the above combination, the seat 3, the seat tube 16, the inner tube 10, the front wheel 6 and the bearing constitute one integral part that can rotate.

For convenience of installation, the upper end bearing mounting seat 11 and the lower end bearing mounting seat 18 include outer edge portions, the outer edge portions are higher than the end surfaces of the circular tubes 2, the outer diameters of the outer edge portions are the same as the outer diameter of the circular tubes 2, and the inner end surfaces of the outer edge portions are abutted to the end surfaces of the circular tubes 2.

The inner diameters of the upper end cover 13 and the lower end cover 17 at two ends are slightly larger than the outer diameter of the inner tube 10, the heights of the upper end cover 13 and the lower end cover 17 do not exceed the outer edge end face of the corresponding bearing mounting seat, and in order to reduce the friction resistance generated in the rotating process of the inner tube, the upper end cover 13 and the lower end cover 17 are not in contact with the corresponding bearing mounting seats and only in contact with the inner ring of the bearing.

Preferably, the upper end bearing 12 and the lower end bearing 19 may be angular contact ball bearings.

In order to operate the brake conveniently, the brake handle 21 for controlling the rear wheel brake device is fixedly mounted on the circular tube 10 through the mounting bracket 20 and is arranged close to the saddle 3.

In order to right the angle of the turn of front wheel 6 limits, avoids appearing the safety problem that the too big arouses of turn angle degree, the bottom of pipe 2 is provided with two stopper (not shown in the figure) along the circumferencial direction interval, on the front wheel support 7 with two the relative position department of stopper is provided with a dog (not shown in the figure), the dog is located two between the stopper.

When riding, thereby ride the passerby and provide the drive power that gos forward for rear wheel 5 through stepping on the footboard, rotate saddle 3 through wrench movement buttock simultaneously and drive seat pipe 16 and rotate, and seat pipe 16 rotates and drives inner tube 10 and rotate, and inner tube 10 rotates and drives front wheel support 7 and rotate, and front wheel support 7 rotates and drives and install front wheel 6 on front wheel support 7 rotates to the control that realizes turning to. Therefore, the two hands do not need to be turned on the steering wheel all the time in the riding process, the two hands are liberated, and the two hands are not easy to feel fatigue when people ride for a long time.

Example two

As shown in fig. 7 to 8, the second embodiment is different from the first embodiment only in that the front wheel 6 in the first embodiment includes two front wheels 6, the two front wheels 6 are symmetrically arranged on both sides of a front wheel bracket 7, and the two front wheels 6 are connected through an axle connected with the front wheel bracket 7.

Compared with the embodiment that one front wheel 6 is included, the riding process can be more balanced and stable by adopting two front wheels 6.

EXAMPLE III

As shown in fig. 9, the third embodiment includes all the features of the first embodiment or the second embodiment, and the difference is that in the third embodiment, a handrail support 25 further extends in front of the circular tube 2, and a handrail 26 is further fixedly connected to both ends of the top of the handrail support 25. Therefore, the rider can select two hands to be placed on the two armrests during riding to improve balance feeling, and when the rider feels fatigue, the rider can release the two hands and realize steering through twisting of thighs and buttocks.

Furthermore, the brake handle is arranged close to one of the handrails, so that the operation is convenient.

The bicycle provided by the invention has the advantages that the bicycle body structure is simplified and designed, the front fork and the bent handle are removed, the material consumption is reduced, and the storage space is saved; move to main frame 1 below behind the front wheel mounted position, rely on the strength of buttock and thigh to make the bicycle turn to, liberate both hands, when riding for a long time, can let ride more comfortable convenient.

The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A bicycle comprises a main frame, a front wheel, a rear wheel, a saddle, a pedal part and a brake device, and is characterized in that the main frame comprises a circular tube, an inner tube sleeved in the circular tube, an auxiliary tube connected to the circular tube and extending forwards, and a rear wheel bracket connected to the rear of the circular tube, wherein the inner tube is in matched rotary connection with the circular tube through a bearing;

the front wheel is arranged on a front wheel bracket, and the front wheel bracket is fixedly connected with the bottom of the inner tube;

the bottom of the saddle is connected with a seat tube, and the seat tube is fixedly connected with the top of the inner tube through a buckle;

the rear wheel is arranged on the rear wheel bracket, and the diameter of the rear wheel is larger than that of the front wheel;

the pedal part is arranged at the front end of the auxiliary pipe and is in transmission connection with the rear wheel through a chain wheel and a chain;

and the brake device is arranged on the rear wheel and the rear wheel bracket.

2. The bicycle according to claim 1, wherein both ends of the inner tube are provided with external threads, and the external threads at the lower end of the bottom of the inner tube are matched and fixedly connected with the internal threads arranged on the front wheel bracket;

the inner pipe between the top end face of the inner pipe and the upper end external thread is a small-diameter part, the inner pipe between the upper end external thread and the lower end external thread is a large-diameter part, and the diameter of the small-diameter part is smaller than that of the large-diameter part; the top of the small-diameter part is provided with a notch, and the buckle is arranged at a position close to the notch and used for adjusting the depth of the seat tube inserted into the inner tube; the upper end external thread is connected with a locking nut sleeved on the inner pipe in a matching manner.

3. The bicycle of claim 2, wherein bearing installation seats are arranged at two ends of the circular tube, the bearing installation seats are tightly matched with the circular tube, the bearings are fixedly installed in the bearing installation seats at the two ends, an outer ring of each bearing is tightly matched with the bearing installation seats, the inner tube penetrates through the bearings at the two ends and is tightly matched with inner rings of the bearings, end covers are installed at outer ends of the bearings at the two ends, the end covers are in contact with the inner rings of the bearings, the lower ends of the locking nuts are abutted to upper end bearing end covers, and the front wheel support is abutted to the lower end bearing end covers.

4. The bicycle of claim 3, wherein the bearing seats at both ends comprise outer edge portions, the outer edge portions are higher than the end surfaces of the round tubes, the outer diameter of the outer edge portions is the same as that of the round tubes, and the inner end surfaces of the outer edge portions abut against the end surfaces of the round tubes.

5. The bicycle of claim 1, wherein the front wheels comprise two front wheels, the two front wheels are symmetrically arranged on two sides of the front wheel bracket, and the two front wheels are connected through an axle connected with the front wheel bracket.

6. The bicycle of claim 1, wherein the front wheel comprises one, and the front wheel is mounted at the middle of the front wheel bracket and is rotatably connected with the front wheel bracket through a wheel axle.

7. The bicycle of claim 1, wherein the bottom of the circular tube is provided with two limiting blocks at intervals along the circumferential direction, and a stop block is arranged on the front wheel bracket at a position opposite to the two limiting blocks and located between the two limiting blocks.

8. The bicycle of claim 1, wherein the brake device comprises a brake mounted on the rear wheel bracket and a disc brake pad mounted on the rear wheel hub, a brake handle controlling the brake device is mounted on a circular tube located below the seat and disposed close to the seat, and the brake handle controls the brake and the brake pad to operate through a brake cable.

9. The bicycle of claim 1, wherein the circular tube is further connected with a handrail support extending forwards, two ends of the handrail support are respectively provided with a handrail, and a brake handle for controlling the brake is arranged at a position close to one of the handrails.