CN2623578Y

CN2623578Y - Lever-rack driving pattern bicycle

Info

Publication number: CN2623578Y
Application number: CNU032200773U
Authority: CN
Inventors: 赵建福; 赵贇
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-02-24
Filing date: 2003-02-24
Publication date: 2004-07-07
Anticipated expiration: 2013-02-24

Abstract

The utility model relates to a bicycle, in particular to a lever-rack driving pattern bicycle, which is characterized in that: a driving mechanism comprises two driving levers, two rack and gear mechanisms, a crank shaft and a central shaft, wherein the central shaft is arranged on a horizontal fork arm on the lower part of a triangular bicycle frame, one end of each driving lever is arranged on the central shaft while the other end is provided with a pedal, the middle part of the crank shaft is arranged on the lower part of the triangular bicycle frame, the two ends of the crank shaft are respectively arranged on the lower parts of the two driving levers and are respectively in rolling contact with the two driving levers, one end of each rack is arranged on the inside of the central shaft, and the two gears are respectively arranged on a rear axle shaft. The driving mechanism has simple structure, reliable performance, reduced mechanical wear surface and failure rate, and improved driving efficiency with time and labor saved. When the utility model is put into use, the feet of the user only need making up and down movement, thereby meeting human engineering principles without bringing about fatigue easily and with low manufacture cost and easy maintenance.

Description

Lever rack driven formula bicycle

Affiliated technical field

The utility model relates to a kind of bicycle, especially a kind of lever rack driven formula bicycle.

Background technology

Bicycle is riding instead of walk and fitness tool of using always of people.Known bicycle is by triangular frame, front vehicle wheel, rear wheel, component set-ups such as handlebar, driving device, foot-operated and vehicle seat, driving device adopts the chain-driving mode usually, its major technology defective is: the mechanical wear of chain and sprocket wheel is big, chain releasing appears in fault rate height easily during as use; Chain friction ash damper or chain box; Chain is clamped user's trousers angle easily; Pedal spindle does not rotate synchronously with axis, causes fault; Step on when stepping on pin and must do 360 ° of rotations, cause fatigue etc. easily around axis.

Summary of the invention

For overcoming the defective of prior art, improve the driving efficiency of bicycle, reduce mechanical wear, reduce the operational failure incidence, the utility model provides a kind of lever and gear wheel driving type bicycle, solves the technical scheme that its technical matters adopts to be:

1, the utility model comprises triangular frame, front vehicle wheel, rear wheel, handlebar, driving device, ride and vehicle seat, described driving device comprises 2 drive links, 2 rack and pinion mechanisms, bent axle and center shaft, described center shaft is located on two horizontal fork arms of triangular frame bottom by bearing seat, one end of described drive link is located on the center shaft, the other end is provided with foot-operated, described bent axle middle part is located at the triangular frame bottom by crankshaft bearing seat, two ends lay respectively at the below of two drive links, and respectively with the drive link rolling touch, one end of described two tooth bars is located at the inboard of center shaft respectively, and two tooth bars mesh respectively with two gears that are located at the rear vehicle shaft outside.

The beneficial effects of the utility model are:

1, is the rack driven mode owing to changing chain transmission mode, simplified transmission structures, reduced the mechanical wear face, reduced rate of breakdown.

2, adopt drive link, increased moment, produce bigger turning effort with the lever mode, thereby reach the purpose of time saving and energy saving raising driving efficiency.

3, owing to adopt the lever and gear wheel mode, by the bent axle adjustment, pin only need move up and down during use, need not to do 360 ° of rotations around axis, meets principle of human engineering, is difficult for causing fatigue.

4, simplified the physical construction of bicycle, the processing and manufacturing cost reduces, and is easy to maintenance.

Description of drawings

Fig. 1 is an organigram of the present utility model.

Fig. 2 is a structure schematic top plan view of the present utility model.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further specified:

Embodiment

The utility model comprises triangular frame, front-wheel 1, trailing wheel 8, handlebar, driving device, foot-operated 2 and vehicle seat.Its driving device comprises two drive links 3, two rack and pinion mechanisms, bent axle 4 and two center shafts 5, two center shafts 5 are installed on two horizontal fork arms of triangular frame bottom by bearing seat respectively, one end of two drive links 3 is installed in respectively on the center shaft 5, the other end is equipped with foot-operated respectively, bent axle 4 middle parts are installed in the triangular frame bottom by crankshaft bearing seat, two ends lay respectively at the below of two drive links 3, and respectively with drive link 3 rolling touch, one end of two toothed rack 6 is installed in the inboard of center shaft 5 respectively, and two tooth bars 6 mesh respectively with two gears 7 that are installed in the rear vehicle shaft outside.Tooth bar 6 takes the shape of the letter U, and the tangential direction and the angle between the horizontal fork arm of tooth bar 6 and gear 7 point of engagement are 80 °, and the maximum angle between described two drive links 3 is 76 °.

When foot-operated 2 were operated, drive link 3 was given center shaft 5 with transmission of power, and center shaft 5 rotating band carry-over bars 6 move obliquely upward, by tooth bar 6 and gear 7 engagements, forwards rolled thereby drive wheel.Two foot-operated 2 alternately step on can be realized wheel continuous rolling forward.

Claims

1, lever rack driven formula bicycle, comprise triangular frame, front vehicle wheel, rear wheel, handlebar, driving device, ride and vehicle seat, it is characterized in that: described driving device comprises 2 drive links, 2 rack and pinion mechanisms, bent axle and center shaft, described center shaft is located on two horizontal fork arms of triangular frame bottom by bearing seat, one end of described drive link is located on the center shaft, the other end is provided with foot-operated, described bent axle middle part is located at the triangular frame bottom by crankshaft bearing seat, two ends lay respectively at the below of two drive links, and respectively with the drive link rolling touch, one end of described two tooth bars is located at the inboard of center shaft respectively, and two tooth bars mesh respectively with two gears that are located at the rear vehicle shaft outside.