CN2244513Y

CN2244513Y - Quick biycle

Info

Publication number: CN2244513Y
Application number: CN 95227813
Authority: CN
Inventors: 彭连如
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-12-11
Filing date: 1995-12-11
Publication date: 1997-01-08
Anticipated expiration: 2005-12-11

Abstract

The utility model relates to a quick bicycle. A double linked cone pulley which is composed of a big chain wheel and a small chain wheel is arranged at the upper part of a pedal chain wheel, and is arranged at the end part of a cone pulley shaft. A bearing seat for supporting the cone pulley shaft is arranged on a transverse beam which is fixedly connected in a triangle fork of a bicycle frame. The transmission of the pedal bicycle is transferred from the pedal chain wheel to the small chain wheel of the double linked cone pulley, and then is transferred from the big chain wheel of the double linked cone pulley to the small chain wheel arranged on a rear wheel shaft. A first stage speed-up chain wheel transmission of a common bicycle and a mountain transmission bicycle is replaced by a two-stage speed-up chain wheel transmission of the utility model, and thus the rotating frequency of the foot pedal trodden by the feet of a rider is slow. The effects of physical strength saving and fatigue relief can be obtained, and the rapid riding of the bicycle is easy to realize.

Description

Quick bicycle

The utility model relates to bicycle, refers to a kind of quick bicycle that the secondary boost installation is arranged especially.

Bicycle is China both urban and rural residents's the main vehicle, various vehicles occurred according to various objectives manned, that transport thing, motion, body-building.In the prior art, minor sprocket on bicycle (comprising mountain bike that hind axle is equipped with the speed change cone pulley, racing car etc.) pedal sprocket wheel and the hind axle is the transmission of one-level speedup, and (the speedup transmission refers to that the big rotating speed of driving wheel diameter is slow, the flower wheel diameter is little, the transmission that rotating speed is fast), when needs were ridden fast, the cyclist only speeded the rotating speed of pedal, promptly increased the frequency that foot is stepped on pedal, the cyclist is tired easily like this, fast can not be lasting.

The purpose of this utility model provides a kind of quick bicycle, make the cyclist can with slower foot step on pedal frequency, and obtain riding speed faster

Used technical scheme, be that pedal sprocket wheel and the transmission between the hind axle minor sprocket with bicycle changes the transmission of secondary speedup into by traditional one-level speedup transmission, quick bicycle of the present utility model, form by vehicle frame, front and back wheel, handlebar, pedal and driving chain wheel etc., above the hinge wheel that connects pedal, be equiped with by a concentric hinge wheel, the duplex cone pulley that minor sprocket is formed, this cone pulley is contained in the end of step pulley shaft, and the bearing seat of supporting step pulley shaft is contained on the crossbeam that is fixed in the vehicle frame triangle fork.The minor sprocket of described duplex cone pulley connects through chain and the hinge wheel that is connected pedal, and the hinge wheel of described duplex cone pulley is connected with minor sprocket on the hind axle through chain.

When being applied to the mountain region vehicle, the hinge wheel of described duplex cone pulley is connected with speed change cone pulley on the hind axle through chain

In preferred embodiment, dustproof chain guard is equipped with in top, the outside of described each sprocket wheel and chain.

Quick bicycle of the present utility model, owing to be provided with the transmission of secondary speedup between drive sprocket (referring to the pedal sprocket wheel) and the driven sprocket (referring to be connected in the sprocket wheel of hind axle), when bicycle is advanced, though the power of acting can not be saved, but can make the cyclist step on pedal enough slows down with the frequency of rotating bicycle middle shaft, this can reach equally saves muscle power, reduces tired effect.On smooth road, the frequency that the cyclist steps on pedal with ride ordinary bicycle time foot but can obtain gait of march faster.On the relatively poor road of condition, when the cyclist advanced with the ordinary bicycle speed of a motor vehicle, frequency that its foot is stepped on pedal but can reduce, and is not busy long-drawn-out, is difficult for tired.Secondary multiplying gear of the present utility model both can be used for ordinary bicycle, also can be used for having mountain bike, the racing car of speed change retaining.

Now in conjunction with the accompanying drawings with preferred embodiment:

Fig. 1 is the profile scheme drawing of the utility model embodiment, and the left side is watched.

The same Fig. 1 of Fig. 2, the right side is watched.

Fig. 3 amplifies, shows relevant drive structure for the part of Fig. 1.

Fig. 4 is a kind of embodiment of duplex cone pulley and bearing seat thereof.

Please refer to Fig. 1, Fig. 2, quick bicycle of the present utility model, form by vehicle frame 1, front and back wheel 2,3, handlebar 4, pedal 5,6 and pedal hinge wheel 7, hind axle Xiao Lian wheel 8 etc., above the hinge wheel 7 that connects pedal, be equiped with by a concentric hinge wheel 9, the duplex cone pulley that minor sprocket 10 is formed, this cone pulley is contained in the end of step pulley shaft 11, the bearing seat 12 of supporting step pulley shaft is contained on the crossbeam 13 that is fixed in the vehicle frame 1 triangle fork, sees Fig. 3.The minor sprocket 10 of described duplex cone pulley connects through chain and the hinge wheel 7 that is connected pedal, and the hinge wheel 9 of described cone pulley is connected with minor sprocket 8 on the hind axle through chain.

Described bearing seat 12 can be used the bearing and the bearing seat of known technology, Fig. 4 is a kind of embodiment, this bearing seat adopts the axle bowl steel ball structure of ordinary bicycle, in the arc-shaped ring groove 14 of 11 bowls of step pulley shaft 16 and bearing seat 12, some steel balls 15 are housed, and be duplex bearing supported form, described duplex cone pulley is connected in the overhanging end of rotating shaft 11 with drift bolt 16.

Fig. 3 three shows on the hind axles speed change cone pulley 17 is housed, and the hinge wheel 9 of described duplex cone pulley is connected with speed change cone pulley 16 on the hind axle through chain

For trousers dustproof and the protection bicyclist do not touch sprocket wheel and chain, dustproof chain guard (accompanying drawing does not show) is equipped with in top, the outside of described each sprocket wheel and chain.

Claims

1. quick bicycle, form by vehicle frame, front and back wheel, handlebar, pedal and driving chain wheel etc., it is characterized in that: above the hinge wheel that connects pedal, be equiped with by a concentric hinge wheel, the duplex cone pulley that minor sprocket is formed, this cone pulley is contained in the end of step pulley shaft, and the bearing seat of supporting step pulley shaft is contained on the crossbeam that is fixed in the vehicle frame triangle fork.The minor sprocket of described duplex cone pulley connects through chain and the hinge wheel that is connected pedal, and the hinge wheel of described duplex cone pulley is connected with minor sprocket on the hind axle through chain.

2. quick bicycle according to claim 1 is characterized in that: the hinge wheel of described duplex cone pulley is connected with speed change cone pulley on the hind axle through chain.

3. quick bicycle according to claim 1 is characterized in that: dustproof chain guard is equipped with in top, the outside of described each sprocket wheel and chain.