CN201538415U - Novel hand lever driving and steering device for three-wheeled variable speed bicycles - Google Patents

Abstract

The utility model provides a novel hand lever driving and steering device for three-wheeled variable speed bicycles. A handle (21) drives a steering lever (5) to be pushed forward and pulled backward by taking O1-O2 as the shaft; a crank shaft (7) rotates under the driving of a connecting rod (25); a chain wheel set (9) is driven through a chain wheel (8) and a chain (23), so that the bicycle moves forward, and an upper rod L1 can rotate with the bicycle; double pull rods (20) which are connected through a b rod, and a front fork (6) form a four-bar mechanism pulling a front wheel (4) to turn left and right; and an external variable speed device including a chain transmission and a derailleur enables the variable speed bicycle to move at three speeds, namely, a fast speed, a middle speed and a slow speed; the variable speed bicycle is ridden fast when the road condition is good, and is ridden slowly to increase climbing capacity; the bicycle is supported by three wheels so as to be supported stably; the brake handle can brake the front wheel as well as the back wheel, so that the riding is safe and reliable; arc-shaped adjusting plates (14) with four gears are mounted on two sides of a seat board (16) as well as two sides of a backrest (15), so that an inclined angle of the backrest (15) can be adjusted according to the requirements of a rider, when the backrest (15) is placed as a deck chair, the tired rider can lie down for a rest during riding. The utility model relates to a practical vehicle for lower limb deformed people and the aged for body-building and riding instead of walking.

Description

The novel hand lever of three-wheel variable speed bicycle drives and steering hardware

Technical field

The novel hand lever that the utility model relates to a kind of three-wheel variable speed bicycle drives and steering hardware.This car is used for people's body-building of lower limb disability and rides instead of walk, belongs to field of vehicles.

Background technology

The people of present domestic lower limb disability, employed walking-replacing tool has the bicycle of hand sprocket-type, power-actuated bicycle, wheelchair etc., and hand sprocket-type before driving bicycle, sprocket wheel radius of turn be little, effort, can not speed governing, hill climbing ability is poor; Power-actuated, the cost operating charges is all higher, and maintenance is comparatively complicated, and wheelchair is used for closely with indoor more, and physique relatively poor people ride instead of walk.For adapting to the strong lower limb disability people of young body, ride on different road conditions, needing can be more laborsaving, adjustable speed, three-wheel variable speed bicycle that hill climbing ability is strong.

Summary of the invention

A kind of novel hand lever of three-wheel variable speed bicycle drives and steering hardware, drives and deflecting bar (5), by handgrip (21), drive and turn to upper boom L ₁, cross axle box (24), drive lower beam L ₂Form, drive and turn to upper boom L ₁The same handgrip in top (21) be that sleeve pipe connects, the collapsing length scalable drives and turns to upper boom L ₁With cross axle box (24) is that axle, hole connect, free to rotate, is rigid connection with the b bar in the cross axle box (24), has constituted the center cross structure, pushes away when handgrip (21) is preceding, post-tensioning drives deflecting bar (5), when driving car and moving ahead, and upper boom L simultaneously ₁Can turn left and right, duplex pull rod (20) by b bar two client links, the four bar linkage steering engine structure that same front fork (6) is formed, drive left and right the turning to of front-wheel (4), drive with deflecting bar (5) before push away, post-tensioning drives that car moves ahead and front-wheel turns at any time, all is that the O point with center cross is that center of gyration is realized.

Description of drawings

Fig. 1 is that the novel hand lever of the utility model three-wheel variable speed bicycle drives and the steering hardware front view;

Fig. 2 is that the novel hand lever of the utility model three-wheel variable speed bicycle drives and the steering hardware birds-eye view;

Fig. 3 is that the novel hand lever of the utility model three-wheel variable speed bicycle drives and steering hardware driving system schematic diagram.

Among the figure, 1 frame, 2 drive wheels, 3 bogie wheels, 4 front-wheels, 5 drive deflecting bars, 6 front forks, 7 bent axles, 8 hinge wheels, 9 chain wheel set, the 10 groups of chain devices, 11 bearings, 12 coupler, 13 brake handles, 14 arc regulating plates, 15 backrests, 16 seat boards, 17 handrails, 18 links, 19 gear change hand levers, 20 duplex pull rods, 21 handgrips, 22 mudwinges, 23 chains, 24 cross casees, 25 connecting rods.

The specific embodiment

The utility model is that the novel hand lever of three-wheel variable speed bicycle drives and steering hardware.As Fig. 3, drive and deflecting bar (5): be by upper boom L ₁, ten axle boxes (24), lower beam L ₂Form.Handgrip (21) and upper boom L ₁Be sleeve structure, telescopic is adjustable.Deflecting bar (5) precedingly pushes away when driving, during post-tensioning, the O on the cross axle box (24) ₁-O ₂Axle can be at support a ₁-a ₂Last swing, pulling connecting rod (25) drives bent axle (7) and rotates, and drives sprocket wheel (8) and chain (23) and drives trailing wheel (2), and car moves ahead, meanwhile, upper boom L ₁Can also rotate thereupon and cross axle box (24) in the b bar be rigid connection, B bar two ends are connected with duplex pull rod (20) hinge, have constituted the four bar linkage steering engine structure with front fork (6).Upper boom L ₁Rotation thereupon, spurred the left and right of front-wheel and turned to.Transmission system has adopted sprocket wheel (8), the outer speed changing structure of chain (23).Drive sprocket (8) is 1, and chain wheel set (9) is three, realizes the sprocket wheel conversion by dialling the chain device, can accelerate, in, slow three speed.Safety: the three-wheel supporting, on front-wheel (4) and left rear wheel (2) circle braking mechanism is housed, (13), steel wire control brake is managed in pulling by the dual brake on the handgrip (21).An arc regulating plate (14) is respectively adorned in both sides at seat (16) and backrest (15), the angle of inclination of four gear scalable backrests (15) is arranged, for the rest of lying on the back when tired in driving or the way.

Claims (3)

1. the novel hand lever of a three-wheel variable speed bicycle drives and steering hardware, drives and deflecting bar (5), by handgrip (21), drive and turn to upper boom L ₁, cross axle box (24), drive lower beam L ₂Form, drive and turn to the same handgrip in top (21) of upper boom L1 to connect for sleeve pipe, the collapsing length scalable drives and turns to upper boom L ₁With cross axle box (24) is that axle, hole connect, free to rotate, is rigid connection with the b bar in the cross axle box (24), in cross axle box (24), constituted the center cross structure, it is characterized in that: handgrip (21) is preceding to be pushed away, post-tensioning drives deflecting bar (5), when driving car and moving ahead, and upper boom L simultaneously ₁Can turn left and right, duplex pull rod (20) by b bar two client links, the four bar linkage steering engine structure that same front fork (6) is formed, drive left and right the turning to of front-wheel (4), drive with deflecting bar (5) before push away, post-tensioning promotes that car moves ahead and front-wheel turns at any time, all is that the O point with center cross is that center of gyration is realized.

2. require the novel hand lever of described three-wheel variable speed bicycle to drive and steering hardware according to right 1, drive deflecting bar (5) before push away, during post-tensioning, at L ₂Bar lower end hinge-point A spurs connecting rod (25), drive bent axle (7) and hinge wheel (8), reach chain (23) driving chain wheels (9), car moves ahead, and it is characterized in that: by chain wheel set (9), chain (23), dial chain device (10) and constituted outer gear arrangement, can accelerate, in, slow three speed.

3. require the novel hand lever of described three-wheel variable speed bicycle to drive and steering hardware according to right 1, it is characterized in that: an arc regulating plate (14) is respectively adorned in seat board (16) both sides, four gears are arranged, the angle of inclination of adjustable back (15), select for use for the bicyclist, the maximum inclination angle is a couch position, can be for the rest of lying on the back when tired in bicyclist or the time way of playing.

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