CN2402587Y - Front- and rear-wheel driven bicycle - Google Patents

Abstract

The utility model discloses a front wheel-rear wheel driving type bicycle which can maintain a rear wheel driving mechanism of the traditional bicycle to be unchanged. The front wheel of the bicycle is coaxially connected with a fly wheel which is engaged with a chain wheel through a chain; a shaft of the chain wheel is connected with an L-shaped support frame which is fixed on the front end of a bicycle large frame; two large cranks are fixed on the shaft of the chain wheel in parallel; the top ends of the large cranks are hinged with a slide bar which is sheathed on a slide sleeve of the L-shaped support frame; bicycle handle bars are driven in both the front and the back to cause the slide bar forward and backward move along the slide sleeve. Simultaneously, the large cranks can rotate around the shaft to drive the fly wheel and the front wheel to rotate to complete the function that an arm drives the front wheel to move. The bicycle can be pedaled, and simultaneously can be driven by hands. The carrying capacity and running speed of the bicycle can be increased. The utility model can also be used as a fitness apparatus to exercise double legs and double arms of people.

Description

The front and back wheel driven bicycle

The utility model relates to the improvement of bicycle, is furtherly to disclose a kind of front and back wheel driven bicycle, belongs to technical field of bicycles.

Traditional bicycle all adopts back-wheel drive, and its onward impulse relies on the strength of both legs fully, and when bicycle during at heavy burden, climbing and long-term travel, the burden of shank, and both hands be can't put on a spurt, and the go-cart of having to is sometimes advanced.

The utility model discloses a kind of front and back wheel driven bicycle at the problem that standard bicycle exists, and the strength that makes full use of the both legs both hands drives bicycle.

Task of the present utility model is finished like this: keep traditional bicycle rear driver train constant, on the front-wheel of bicycle, be coaxially connected with flywheel, and by chain and sprocket engagement, L bracket is fixed on the front end of big of car, sprocket shaft is connected on the L bracket, two are turned parallel being fixed on the sprocket shaft greatly, the top and the slide bar that turn greatly are hinged, jack rod sleeve is on the sliding sleeve of L bracket, handlebar is fixed on the slide bar, and front and back drive handlebar can make slide bar seesaw along sliding sleeve, turns greatly simultaneously and sways, drive flywheel and front-wheel and rotate, finish the function that arm drives the front-wheel motion.

Good effect of the present utility model is: adopt said structure, when driving bicycle rear, both feet also can utilize both hands to drive the front-wheel of bicycle, make full use of physical efficiency, solved traditional bicycle when heavy burden, climbing and long-term travel, the burden of shank, and the problem that both hands be can't put on a spurt have improved the carrying capacity and the running velocity of bicycle, and can be used as body-building apparatus, temper people's both legs both arms.

Further specify the utility model below in conjunction with accompanying drawing.

Fig. 1 is the utility model structure principle chart.

In Fig. 1, form the utility model by big of car, front-wheel and preceding sprocket drive, trailing wheel and back sprocket drive, handlebar, vehicle seat, keep traditional bicycle rear driver train constant, L bracket 4 is fixed on the front end of big 10 of bicycle, sprocket wheel 6 is coupling on L bracket 4, two are fixed on 6 on the sprocket wheel with turning 5 cocurrent and parallels greatly, but drive sprocket 6 rotates, turning 5 top greatly is connected with slide bar 3 hinges, slide bar 3 is enclosed within on the sliding sleeve 2 of L bracket 4, handlebar 1 is fixed on the slide bar 3, and flywheel 8 constitutes engagement by chain 7 with sprocket wheel 6 and pays.

Claims (1)

1, a kind of front and back wheel driven bicycle, by big of car, front-wheel, trailing wheel and back sprocket drive, handlebar, vehicle seat is formed, it is characterized in that: be coaxially connected with flywheel (8) on the front-wheel (9), mesh by chain (7) with sprocket wheel (6), L bracket (4) is fixed on the front end of car big (10), sprocket wheel (6) is coupling on L bracket (4), two are turned greatly on (5) parallel axle that is fixed on sprocket wheel (6), the top and the slide bar (3) that turn (5) greatly are hinged, slide bar (3) is enclosed within on the sliding sleeve (2) of L bracket (4), handlebar (1) is fixed together with slide bar (3), and slide bar (3) can seesaw along sliding sleeve (2), turns (5) greatly simultaneously and sways.