CN2209638Y

CN2209638Y - Pedal-rod type bicycle

Info

Publication number: CN2209638Y
Application number: CN94241453U
Authority: CN
Inventors: 赵健福; 郭怀清
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-09-29
Filing date: 1994-09-29
Publication date: 1995-10-11
Anticipated expiration: 2004-09-29

Abstract

The utility model relates to a pedal-rod type portable bicycle which comprises a front wheel, a back wheel, a frame, a seat, a handle, and a driving mechanism, wherein, the driving mechanism is composed of a couple of driven chain wheels fixed on the rear wheel shaft of the inner side of the lower beam of the frame, a couple of driving chain wheels on a couple of shafts arranged on the end of the lower beam, a couple of chains, and a couple of pedal rods of a couple of shafts arranged on the end of the lower beam. Each pedal rod is equipped with a connecting nose, one end of a guide wire is fixed on the connecting nose of one pedal rod, and the other end of the guide wire is connected with the connecting nose of the other pedal rod after passing through the spacing clamp of a support bracket and rounding the guide wheel of the frame. Due to the adoption of pedal-rod type lever motion and a chain driving mechanism with a compact structure, the utility model has the advantages of small size, light weight, labor saving, and high speed.

Description

Pedal-rod type bicycle

The utility model belongs to the Bicycle in the vehicle.

Bicycle is of a great variety at present, get up to be divided into two kinds of coventional type and variable speed models but conclude, these bicycles all are to turn by pedal to make garden Zhou Yundong generation power, the length that its pedal turns is restricted, therefore also limited the power that bicycle advances, even what have is equipped with transmission system, also can only make teeth than adjusting according to road conditions are different, fundamentally do not increase the prime power of bicycle.When climbing steeper sloping road, allow the tooth ratio of wheel disc and flywheel diminish as derailleur, but after such speed change, the number of turns of pedal will increase, the speed that garage is walked is still very slow, and the size of the speed of a motor vehicle is to the balance and stable the playing a big part of car, so the walking of also need getting off sometimes.The patent No. of announcing in Chinese patent communique on September 21st, 1994 is 93235441.6 " pedal-type bicycle " though pedal crank is made garden Zhou Yundong produce power and change into and adopt the lever power pedal drive, changed the type of drive of existing bicycle, but because unreasonable structure, structure is comparatively complicated, and floor area is big, move inconvenience, be unfavorable for promoting the use of.

The purpose of this utility model is that a kind of traditional type of drive of former bicycle that both changed of design overcomes above-mentioned defective, makes it to ride laborsaving, and at a high speed, makes it the small and light again bicycle of volume.

The purpose of this utility model is achieved in that it comprises front-wheel, trailing wheel, vehicle frame, vehicle seat, handle and transmission device, transmission device is by a pair ofly not held a pair of drive sprocket and master on a pair of axle that is provided with by movable sprocket and underbeam being fixed with on the hind axle of the underbeam inboard of vehicle frame, by a pair of chain between the movable sprocket be contained in underbeam and do not hold a pair of treadle on a pair of axle to constitute, on a pair of treadle, be respectively equipped with the connection nose, vehicle frame is provided with guide wheel, support is provided with spacing card, one end of conductor rope is fixed on the connection nose on the treadle, and the other end is by spacing card and walk around guide wheel and be fixed on the connection nose on another treadle.

So the utility model is owing to adopted the chain drive of compact conformation, thereby volume is little, changes the circular movement of pedal crank the lever motion of treadle formula into laborsaving.

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is the utility model structural representation;

Fig. 2 is the birds-eye view of treadle transmission device among Fig. 1.

Among the figure: 1-front-wheel, 2-vehicle frame, 3-underbeam, the 4-support, 5-guide wheel, the spacing card of 6-, the 7-conductor rope, the 8-trailing wheel, 9-connects nose, 10-drive sprocket, 11-chain, 12-be by movable sprocket, the 13-treadle, the 14-hind axle, 15-wheel hub, 16-axle, the 17-handlebar, 18-vehicle seat, 19-transmission device.

Fig. 1 has described an embodiment of the present utility model.Before it comprises, trailing wheel (1), (8), vehicle frame (2), vehicle seat (18), handle (17) and transmission device (19), before, trailing wheel (1), (8) wheelspan between is 10 centimetres, the vehicle body length overall is 1.54 meters, transmission device (19) is a pair ofly hold a pair of drive sprocket (10) on a pair of (16) that are provided with by movable sprocket (12) and underbeam (3) and lead by being fixed with on the inboard hind axle (14) of the underbeam (3) of vehicle frame (2), by movable sprocket (10), (12) a pair of chain (11) between and be contained in underbeam (3) and do not hold a pair of treadle (13) on a pair of axle (16) to constitute, on a pair of treadle (13), be respectively equipped with and connect nose (9), vehicle frame (2) is provided with guide wheel (5), support (4) is provided with spacing card (6), one end of conductor rope (7) is fixed on the connection nose (9) on the treadle (13), the other end is by spacing card (16), and walks around guide wheel (5) and be fixed on the connection nose (9) on another treadle (13).Conductor rope (7) is made by steel rope or belt.Treadle (13) length is 45 centimetres.Simultaneously also can utilize transmission device of the present utility model, handlebar (17) and front-wheel (1) are removed, change the two-wheeled wagon box, repack bicycle into a kind of later-model three-wheel vehicle, both can freight also can be written into.

When using the utility model, when riding treadle (13), a pair of treadle (13) is crank motion and drive sprocket (10) is rotated drive chain (11) constantly, make and rotated by movable sprocket (2) and hind axle (14) is rotated, thereby trailing wheel (8) is constantly rotated, bicycle is advanced,, and make treadle (13) be unlikely to be in very low position and influence bicycle and advance because conductor rope (7) is subjected to the restriction of spacing card (6).

Claims

1, a kind of treadle formula portable bicycle, comprise front and rear wheel (1), (8) vehicle frame (2), vehicle seat (18), handle (17), transmission device (19), it is characterized in that: transmission device (19) be by be fixed with on the inboard hind axle (14) of the underbeam (3) of vehicle frame (2) a pair of hold by movable sprocket (12) and underbeam (3) on a pair of axle (16) that is provided with a pair of drive sprocket (10) and main, by a pair of chain (11) between movable sprocket (10), (12) be contained in a pair of treadle (13) formation on a pair of (16) that underbeam (3) do not hold.

2, treadle formula portable bicycle according to claim 1, it is characterized in that: be respectively equipped with connection nose (9) on a pair of treadle (13), vehicle frame (2) is provided with guide wheel (5), support (4) is provided with spacing card (6), one end of conductor rope (7) is fixed on the connection nose (9) on the treadle (13), and the other end is by spacing card (6) and walk around guide wheel (5) and be fixed on the connection nose (9) on another treadle (13).