CN2570157Y

CN2570157Y - In-line gear driving bicycle

Info

Publication number: CN2570157Y
Application number: CN 02257503
Authority: CN
Inventors: 张永泉; 张琳
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-27
Filing date: 2002-09-27
Publication date: 2003-09-03
Anticipated expiration: 2012-09-27

Abstract

The utility model relates to an in-line gear driving bicycle, which belongs to the technical field of the bicycle. A bicycle frame is provided with a front wheel 1 and a rear wheel 9, and above the bicycle frame, a handle bar 2 and a vehicle seat 3 are arranged. The utility model has the technical characteristics that a shaft 8 for installing the rear wheel 9 is provided with a tooth fly wheel 10 and a gear 11; both ends of the shaft 8 are fixed with a crank 7 with a pedal respectively; the shaft 8 is arranged on the lower end of a rear fork 12 through two bearings; the rear fork 12 of the bicycle frame is fixed with a shaft 5 through a bearing seat; the shaft 5 is provided with gears 4, 6, and the tooth fly wheel 10 is engaged with the gear 6, and the gear 4 is engaged with a gear 11. The utility model has the advantages that the original centre shaft and rear shaft are combined into integration, and the dynamic force is directly applied on the rear shaft, and thus, the length of the bicycle body is shortened, the used material is reduced, the weight is lightened, and the processing cost is reduced; the transmission part is simultaneously completed via four gears after using in-line gear; due to the gear can not skid when transmitting, compared with the chain drive, the gear drive is more stable and reliable, and the resistance is small.

Description

The in-line gears driving bicycle

Technical field

The utility model belongs to technical field of bicycles, specifically a kind of gear-driven bicycle.

Background technology

Bicycle is one of people's main vehicle of going on a journey, because bicycle adopts mechanical drive mode, so do not pollute the environment, also have body building function by bike simultaneously, use very extensive in town and country, existing bicycle adopts the chain-driving mode mostly, rotated by foot-operated crank axis, the transmission rear axle rotates, and the weak point of its existence is that the transmission wearing and tearing are big, easily skid, increase the transmission resistance after chain easily gets rusty; In addition, because axis is located between the two-wheeled of front and back, make distance increasing between the front and back wheel, vehicle body is long like this, and it is big to take up room.

Summary of the invention

The purpose of this utility model provides a kind of gear-driven bicycle, can shorten bodywork length greatly, skidding can not occur in transmission.

The utility model is achieved in that above front-wheel 1 and trailing wheel 9, vehicle frame are installed on the bicycle rack handlebar 2 and vehicle seat 3 also is installed, it is characterized in that: on the axle 8 of installation trailing wheel 9 tooth flywheel 10 and gear 11 are installed, the two ends of axle 8 are fixed with the crank 7 of band pedal; Axle 8 is installed in back vent 12 lower ends by two bearings, is fixed with axle 5 by bearing seat on vehicle frame back vent 12, on the axle 5

gear

4,6 is installed, and tooth flywheel 10 and gear 6 engagements, gear 4 and gear 11 engagements.

Compare with present chain-driving bicycle, the beneficial effects of the utility model are: original axis and rear axle are united two into one, power directly is added on the rear axle, has shortened bodywork length so greatly, also reduced materials used, alleviated weight, reduced tooling cost, used coaxial back running part instead and finish simultaneously, because gear transmission can not skid by four gears, more reliable and more stable than chain-driving, resistance is little.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the lateral plan of Fig. 1.

Among the figure: 1, front-wheel, 2, handlebar, 3, vehicle seat, 4, gear, 5, axle, 6, gear, 7, crank, 8, axle, 9, trailing wheel, 10, the tooth flywheel, 11, gear, 12, back vent.

The specific embodiment

The utility model decide the height of vehicle seat according to the back wheel diameter, can produce the bicycles of different backs wheel diameters according to the different height of cyclist, and back wheel diameter is greater than preceding wheel diameter, and back wheel diameter is 1.5-2.5 a times of preceding wheel diameter.The big I of 4 transmission gears is decided according to the size of trailing wheel.After riding gear driving bicycle, foot-operated pedal, crank 7 rotates, drive axle 8 and rotate, the gear 11 that is fixed on simultaneously on the axle 8 rotates, and transmission gear 4 rotates, drive with the coaxial gear 6 of gear 4 and rotate, driving cog flywheel 10 rotates again, drives coaxial mounted trailing wheel 9 rotations simultaneously.When pedal not firmly the time, bicycle can steadily slide, and as will brake the time, as long as pedal is exerted oneself backward, just bicycle can be stopped, and has saved the front and back brake gear of existing bicycle, and the structure of bicycle is simpler.

Claims

1, in-line gears driving bicycle, above front-wheel (1) and trailing wheel (9), vehicle frame are installed handlebar (2) and vehicle seat (3) are installed also on bicycle rack, it is characterized in that: on the axle (8) of installation trailing wheel (9) tooth flywheel (10) and gear (11) are installed, the two ends of axle (8) are fixed with the crank (7) of band pedal; Axle (8) is installed in back vent (12) lower end by two bearings, upward be fixed with axle (5) at vehicle frame back vent (12) by bearing seat, on the axle (5) gear (4), (6) are installed, and tooth flywheel (10) and gear (6) engagement, gear (4) and gear (11) engagement.

2, in-line gears driving bicycle according to claim 1 is characterized in that: the back wheel diameter is 1.5-2.5 a times of preceding wheel diameter.