CN2137235Y

CN2137235Y - Speed-increasing bike

Info

Publication number: CN2137235Y
Application number: CN 92238147
Authority: CN
Inventors: 张岩
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-10-24
Filing date: 1992-10-24
Publication date: 1993-06-30
Anticipated expiration: 2002-10-24

Abstract

The utility model relates to a bicycle whose problem of speed raising is solved. A foot pedal chain wheel is arranged on the left side of the direction of travel of the bicycle. Coaxial shaft wheels composed of big and small toothed chain wheels which is in sliding fit with a back axle are arranged on the left side of the back axle. Additionally, a chain wheel shaft is arranged under the seat of the bicycle. Both ends of the chain wheel shaft are installed on the big and small chain wheels which are organically connected by three sets of chains. When the big and small chain wheels are lagged a flywheel is driven to drive a back wheel to rotate and move on. If the transmitting ratio is taken as 2: 1, the speed of the bicycle is increased by 4 times.

Description

Speed-increasing bike

The utility model relates to bicycle.

Bicycle is the important vehicle of current people's daily life in China, how to improve the speed of a motor vehicle to adapt to way far away travelling and work, shortens the journey time, lessen fatigue, and be to be very important.Yet the drive mechanism of existing bicycle, the normal needs that far can not satisfy people.

The purpose of this utility model is to provide a kind of comparatively can satisfy the speeding-up bike that people improve the bicycle speed of a motor vehicle.

The purpose of this utility model reaches like this: speeding-up bike, form by wheel, vehicle frame, handrail, vehicle seat, front fork, back vent and transmission device, it is characterized in that foot-operated sprocket wheel is located at the left side of bicycle working direction, the homonymy on rear vehicle shaft is equipped with a coaxial concentric shafts wheel of being made up of little toothed chain wheel and canine tooth sprocket wheel; Below car crossbeam and vehicle seat connection place, be provided with a bearing seat in addition, in this bearing seat,, be separately installed with minor sprocket and hinge wheel, also be connected with flywheel at last by the organic connection of each toothed chain wheel of chain at these sprocket shaft two ends by bearing installation one sprocket shaft.

In the technique scheme, if transmitting ratio is 2:1, then increase progressively through 3 times, the speed of a motor vehicle can improve 4 times approximately.

Below by drawings and Examples the utility model is further described.

Accompanying drawing is the utility model structural representation.

Mark among the figure: 1. foot-operated sprocket wheel, 2,11,12. chains, 3. concentric shafts wheel, 3a. little toothed chain wheel, the big toothed chain wheel of 3b., 4. rear vehicle shaft, 5. rear wheel, 6. bearing seat, 7. bearing, 8. sprocket shaft, 9. minor sprocket, 10. hinge wheel, 13. flywheel, 14. car crossbeams, 15. vehicle seats, 16. back vent, 17. vehicle frames, 18. steps.

As shown in the figure: speeding-up bike, form by wheel, vehicle frame, handrail, vehicle seat, front fork, back vent and transmission device, the left side (Regular Bicycle is on the right side) that it is characterized in that riding, sprocket wheel 1 is located at the bicycle working direction, at rear vehicle shaft 4 upper left sides a coaxial concentric shafts wheel 3 of being made up of little toothed chain wheel 3a and big toothed chain wheel 3b is housed, concentric shafts wheel 3 is a bearing fit with rear vehicle shaft 4; Below car crossbeam 14 and vehicle seat 15 connection places, be provided with a bearing seat 6 in addition, in this bearing seat 6, a sprocket shaft 8 is installed by bearing 7, be separately installed with minor sprocket 9 and hinge wheel 10 at these sprocket shaft 8 two ends, connect mutually with little toothed chain wheel 3a by chain 2 foot-operated sprocket wheels 1; Connect mutually with minor sprocket 9 by chain 11 big gear wheel 3b; Connect mutually with flywheel 13 by chain 12 hinge wheels 10.This shows that flywheel 13 has passed through speedup 3 times, its again transmission rear vehicle shaft 4 be rear wheel 5 when rotating, will make greatly speedup of bicycle.

Claims

1, speeding-up bike is made up of wheel, vehicle frame, handrail, vehicle seat, front fork, back vent and transmission device, it is characterized in that:

A, foot-operated sprocket wheel 1 are located at the left side of bicycle working direction;

B, a coaxial concentric shafts wheel 3 of being made up of little toothed chain wheel 3a and big toothed chain wheel 3b is housed at rear vehicle shaft 4 upper left sides;

C, concentric shafts wheel 3 are bearing fit with rear vehicle shaft 4;

D, in addition below car crossbeam 14 and vehicle seat 15 connection places, be provided with a bearing seat 6, in this bearing seat 6, a sprocket shaft 8 be installed, be separately installed with minor sprocket 9 and hinge wheel 10 at these sprocket shaft 8 two ends by bearing 7;

E, connect mutually with little toothed chain wheel 3a by the foot-operated sprocket wheels 1 of chain 2; Connect mutually with minor sprocket 9 by chain 11 big gear wheel 3b; Connect mutually with flywheel 13 by chain 12 hinge wheels 10.