CN202130553U

CN202130553U - Bicycle capable of changing speed randomly

Info

Publication number: CN202130553U
Application number: CN201120195414U
Authority: CN
Inventors: 胡文彬
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-01
Filing date: 2011-06-01
Publication date: 2012-02-01
Anticipated expiration: 2021-06-01

Abstract

The utility model relates to a bicycle capable of changing speed randomly, which has the main structure as follows: the upper parts of a front fork and a rear fork of a bicycle body are connected by a hinge, a seat is installed at the upper part of the front fork, a front driving wheel is installed at the lower end of the front fork by a front shaft, and internally provided with a transmission device which consists of an inner transmission bearing, an outer transmission bearing, a planetary gear rack, a planetary gear, a central pin wheel, a fixed pin wheel, a front shaft, a central shaft, a one-way clutch, a crank handle and a pedal which are connected and matched with each other, a transmission device protecting cover is fixed outside the planetary gear rack, a handle is fixed at the upper end of the rear fork, and a rear guiding wheel is installed at the lower end of the rear fork. The bicycle is reasonable in structure and simple in operation, and has the advantages of being more labor saving, quicker, higher in efficiency and easier.

Description

Random variable speed bicycle

One, technical field

The utility model belongs to the technological improvement of traffic appliance, is specifically related to a kind of random variable speed bicycle.

Two, background technology

China is a populous country, and the action of rural and urban population be unable to do without bicycle as walking-replacing tool, this convenience, simple, the practical vehicle; Though the innovation through is for many years regenerated, and by the used different variable speed bicycles of people 3 speed, 10 speed, 18 speed, 27 speed, the bicycle of these different speed changes is arranged; Still adopt the chain-drive structure, the bicycle that adopts this structure is because foot-operated around the axis rotation, so when riding when moving to bottom dead point; It is foot-operated no matter the cyclist steps on great power, and the kinetic moment that on axis, produces is zero, because the kinetic moment of all chain-driving bicycles all changes by cosine curve; Be to change to maximum vanishing again, go round and begin again, when the cyclist goes up the abrupt slope, need kinetic moment to increase by zero; But it all can not change the rule that cosine curve changes; Kinetic moment not only can not increase, reduced on the contrary, even in last bottom dead point vanishing.

Three, summary of the invention

The purpose of the utility model is in order to overcome the deficiency of existing chain-driving variable speed bicycle structure; Provide a kind of laborsaving, at a high speed, efficiently with the random variable speed bicycle of designs simplification; The main technical schemes of its solution is that the forward and backward portion of sticking with car body is that hinge connects; Vehicle seat is equipped with on the top of front fork, and front driving wheel is equipped with through front axle in the lower end, and driving device is housed in the front driving wheel; Driving device by inside and outside drive bearing, planetary gear carrier, planetary wheel, center pinwheel, fixedly pinwheel, front axle, axis, free-wheel clutch, crank, foot-operated connect mutually and cooperate form; The planetary gear carrier fixed outside the driving device protective cover, and handlebar is being fixed in the upper end of back vent, and the back track adjusting wheel is equipped with in the lower end.

The utility model is rational in infrastructure, and is simple to operate, compare with the chain-driving bicycle of conventional confguration have more laborsaving, more fast, more efficiently, advantage more easily.

Four, description of drawings

Below in conjunction with accompanying drawing the utility model embodiment is elaborated.

Fig. 1 is the integral structure scheme drawing of the utility model.

Fig. 2 is the generalized section of the utility model driving device.

Fig. 3 is the structural representation of the utility model train.

Among the figure 1. front driving wheels, 2. front forks, 3. handlebars, 4. vehicle seats, 5. cranks, 6. back vents 7. back track adjusting wheels 8. foot-operated 9. drivings device, 10. center pinwheels 11. fixedly pinwheel 12. planetary wheels 13. front axles 14. outer drive bearing 15. intermediate solid drive shafts hold 16. axis, 17. planetary gear carriers, 18. free-wheel clutchs

Five, the specific embodiment

By a kind of random variable speed bicycle shown in Fig. 1-3; Its keystone configuration is that the forward and backward portion of sticking with car body is that hinge connects; Vehicle seat (4) is equipped with on the top of front fork (2); Front driving wheel (1) is equipped with through front axle (10) in the lower end; Driving device (9) is housed in the front driving wheel, and driving device is by inside and outside drive bearing (15), (14), planetary gear carrier (17), planetary wheel (12), center pinwheel (10), fixedly pinwheel (11), front axle (13), axis (16), free-wheel clutch (18), crank (7), foot-operated (8) connect mutually and cooperate and form, and the planetary gear carrier fixed outside the driving device protective cover; Handlebar (3) is being fixed in the upper end of back vent (5), and back track adjusting wheel (6) is equipped with in the lower end.

During use, step on the wheel that moving and just can move ahead as long as put on foot-operated.When carrying on the pin, be enclosed within foot-operated also and then up on the pin, crank this moment (7) rotates around axis (13), and free-wheel clutch (18) is reverse to break away from, and axis is motionless.When pedaling under the foot-operated quilt, free-wheel clutch (18) self-locking, power is passed to axis (13); It is clockwise rotated; When axis (13) when clockwise rotating, drive planetary gear carrier (14) and rotates together with star gear (17), and with planetary wheel (17) and fixedly pinwheel (16) and center pinwheel (15) mesh.When planetary wheel (17) is prolonging fixedly pinwheel (16) rotation, drive center pinwheel (15) clickwise, after rotating, the center pinwheel drives front axle (10) rotation again, and front axle rotation back drives front-wheel 1 rolling and moves ahead.As long as rider's bipod ceaselessly up-and-down movement, arbitrarily variable speed bicycle just can continue to move ahead.If in the process that moves ahead during the abrupt slope; The rider just can realize speed change as long as keep original foot-operated speed, and the power distance is bigger after the speed change; Travel efficiency is higher, it compare with the chain-driving bicycle of conventional confguration have more laborsaving, more fast, more efficiently, advantage more easily.

Claims

1. random variable speed bicycle; It is characterized in that: the forward and backward portion of sticking of car body is that hinge connects; Vehicle seat (4) is equipped with on the top of front fork (2), and front driving wheel (1) is equipped with through front axle (10) in the lower end, and driving device (9) is housed in the front driving wheel; Handlebar (3) is being fixed in the upper end of back vent (5), and back track adjusting wheel (6) is equipped with in the lower end.

2. random variable speed bicycle according to claim 1; It is characterized in that: driving device is by inside and outside drive bearing (15), (14), planetary gear carrier (17), planetary wheel (12), center pinwheel (10), fixedly pinwheel (11), front axle (13), axis (16), free-wheel clutch (18), crank (7), foot-operated (8) connect mutually and cooperate and form, and the planetary gear carrier fixed outside the driving device protective cover.