CN2500596Y - Bicycle with teetering type chain transmitting - Google Patents

Abstract

A seesaw-type chain-driven bicycle is provided, which comprises handles, a front forked rod, a frame, a front wheel and a rear wheel and is characterized in that a seesaw plate is also provided on the frame; a swing rod is provided at the bottom of the seesaw plate; two bicycle flywheels, a large hinge and two driven sprockets are arranged on each of the driving shaft and the driven shaft of the frame; two chains are connected with the two bicycle flywheels and the two driven sprockets; two support rods are arranged in a way that one end thereof is connected with the bottom of the swing rod and the other end is hinged with the top end of one chain and the bottom end of the other chain; and a large sprocket is connected with the rear axial flywheel by the chains. The bicycle is driven by the vertical shaking of the foot pedals and has the advantages of easy use, stable performance, and use as a tool for both transportation and body exercise.

Description

Seesaw type chain gear bicycle

The utility model relates to bicycle and man, particularly a kind of seesaw type chain-driving bicycle, and suitable people ride instead of walk and body-building is used.

At present, Kickboard Scooter just with it lightly, flexibly, both can ride instead of walk, can be made the advantage that amusement and body-building are used again, is subjected to liking of young people and children, has market outlook preferably.Yet this Kickboard Scooter must could produce the power that advances with a feet step on the ground in use off and on, is not easy to grasp balance.Therefore, existing Kickboard Scooter is to be not suitable for older people to use, and uses also relatively effort.

It is a kind of easy to use, laborsaving that the purpose of this utility model is to provide, and pulsation-free seesaw type chain-driving bicycle advances.

Task of the present utility model realizes by this way: this bicycle includes handlebar, front fork stem, vehicle frame, front-wheel and trailing wheel, it is characterized in that seesaw in addition, fork, strut, bicycle freewheel, driven sprocket, hinge wheel and minor sprocket, seesaw presses on the back plate on vehicle frame top, fork is fixed on the bottom surface of seesaw, front and back in vehicle frame are provided with imput shaft and driven shaft, hinge wheel and two bicycle freewheels that link together by a male-pipe are contained on the imput shaft, two driven sprockets are contained on the driven shaft, article two, chain is contained in respectively on bicycle freewheel and the driven sprocket, hinge wheel is connected with flywheel on the hind axle by chain, the one end hinge of two struts presses on the fork lower end, the other end cuts with scissors respectively on the chain link of a chain upper end and another chain lower end, be provided with an engaged clutch between hinge wheel and bicycle freewheel, the elasticity shift fork of this engaged clutch is connected with the handle of pulling on placing handlebar by steel rope.

The utility model is to use like this: step down on the seesaw before and after people's both feet, after both hands are held up steady handle, when the forward foot in a step is down stepped on, the seesaw front end moves down, driving fork moves backward, also motion backward of two struts of pivotally attached with it, upper strata chain link and strut pivotally attached chain are rotated backward, the chain of lower floor's chain link and strut hinge rotates forward, the chain of Yi Donging is passed to the hinge wheel rotation by its bicycle freewheel and engaged clutch with power forward, the hinge wheel that rotates rotates by the flywheel that the chain on it drives on the hind axle, thereby trailing wheel is rotated, and this bicycle just travels forward.Meanwhile, though the bicycle freewheel that another chain that moves also drives on the imput shaft rotates backward, but because this bicycle freewheel is reversing, only skid backward, hinge wheel is not produced propelling thrust, when the rear foot is down stepped on, fork, strut and chain are all done rightabout motion, are rotated by its bicycle freewheel of another chain drive, drive the hinge wheel rotation and make bicycle continue to travel, another bicycle freewheel then skids, this shows that as long as down step on repeatedly before and after the both feet, bicycle will be to overtake, the frequency that steps seesaw is fast more, and bicycle just travels soon more.

From structure of the present utility model and use principle as can be known, the utlity model has easy to usely, advance steadily and the labour-saving advantage, is a kind ofly to integrate amusement, ride instead of walk and the Move tool of body-building.

Below in conjunction with accompanying drawing structure of the present utility model is further described.

Fig. 1 is the car load profile scheme drawing of a kind of concrete structure of the utility model.

Fig. 2 is the partial enlarged drawing of running part among Fig. 1.

Fig. 3 is the birds-eye view of running part between imput shaft among Fig. 2 (10) and the driven shaft (11).

Fig. 4 is along the semi-sictional view enlarged drawing of A-A line among Fig. 3.

Fig. 5 is the face upwarding stereogram of running part among Fig. 1.

Fig. 6 is that the axle of running part is surveyed assembly drowing among Fig. 1.

As shown in drawings, front fork stem 1 is installed on the front end of vehicle frame 2, and front-wheel 3 is installed in its lower end, and its upper end is established handlebar 4 controls and turned to.Hind axle 5 and trailing wheel 6 are installed in vehicle frame 2 rear ends.A back plate 7 is set in the middle of vehicle frame 2, and seesaw 8 is articulated in the upper end of back plate 7 with its bottom, seesaw 8 can before and after rotate.Fork 9 is fixed on the bottom surface of seesaw 8 down.Front and back between vehicle frame 2 middle frame are provided with an imput shaft 10 and driven shaft 11.Hinge wheel 12 is contained on the imput shaft 10.Two bicycle freewheels 13 and 14 refill on the imput shaft 10 after being contained in a male-pipe 15.Two driven sprockets 16 and 17 are contained on the driven shaft 11.Article two, chain 18 and 19 is contained in respectively on bicycle freewheel 13 and driven sprocket 16 and bicycle freewheel 14 and the driven sprocket 17.Between the flywheel 20 on hinge wheel 12 and the hind axle 5, link together by chain 21.Two struts (22 and 23) are hinged with the chain link of chain 18 and 19 respectively.

Be provided with an engaged clutch 23 between hinge wheel 12 and bicycle freewheel 13, the shift fork 24 of this engaged clutch 23 is connected with the handle 26 of pulling on being arranged on handlebar 4 by steel rope 25.

Described engaged clutch 21 can adopt existing various motor-driven engaged clutch, but preferably adopt denture clutch, its structure is such: have four alveolus 28 and 29 at the end face of hinge wheel 12 axle sleeves 27 and the end face of male-pipe 15, a hollow tween drive shaft 30 is housed in the axle sleeve 27 of hinge wheel 12, on the end face of tween drive shaft 30, be provided with four and cooperate cat's paw 31, on the axle sleeve 27 of hinge wheel 12, have an annular groove 32 that cooperates with elasticity shift fork 24 with alveolus 28 and 29.Its principle of work is such: do not pull handlebar 4 pull handle 26 time, shift fork 24 is allocated to hinge wheel 12 bicycle freewheel 13 1 ends under the elastic force effect of its spring 23, the alveolus 28 of axle sleeve 27, the alveolus 29 of male-pipe 15 and the cat's paw 31 of tween drive shaft 30 are meshed together, and the power that bicycle freewheel 13 or 14 rotates forward just can be passed to hinge wheel 12.Bicycle is advanced, and when people pulled handle 26, its steel rope 23 pulling shift forks 24 made it to break away from the cat's paw 31 of tween drive shaft 30 by the annular groove 32 that cooperates with it, bicycle freewheel 13 or 14 power can't be passed to hinge wheel 12, thereby play clutch action.

Front and rear in seesaw 8 bottom surfaces is provided with limit piece 34, also is provided with corresponding limiting stopper 35 on vehicle frame 2, to limit the amplitude that seesaw 8 swings up and down, is convenient to people's control.

Claims (2)

1, a kind of seesaw type chain-driving bicycle, include handlebar (4), front fork stem (1), vehicle frame (2), front-wheel (3) and trailing wheel (6), it is characterized in that seesaw (8) in addition, fork (9), strut (22 and 23), bicycle freewheel (13 and 14), driven sprocket (16 and 17), hinge wheel (12) and minor sprocket (20), seesaw (8) is articulated on the back plate (7) on vehicle frame (2) top, fork (9) is fixed on the bottom surface of seesaw (8), front and back in vehicle frame (2) are provided with imput shaft (10) and driven shaft (11), hinge wheel (12) and two bicycle freewheels that link together by a male-pipe (15) (13 and 14) are contained on the imput shaft (10), two driven sprockets (16 and 17) are contained on the driven shaft (11), article two, chain (18 and 19) is contained in respectively on bicycle freewheel (13 and 14) and the driven sprocket (16 and 17), hinge wheel (12) is connected with flywheel (20) on the hind axle (5) by chain (21), one end of two struts (22 and 23) is articulated in fork (9) lower end, the other end is articulated in respectively on the chain link of a chain (18) upper end and another chain (19) lower end, be provided with an engaged clutch (23) between hinge wheel (12) and bicycle freewheel (13), the elasticity shift fork (24) of this engaged clutch (23) is connected with the handle (26) of pulling on placing handlebar (4) by steel rope (25).

2. bicycle according to claim 1 is characterized in that being provided with limiting stopper (34) at the front and rear of seesaw (8) bottom surface, also is provided with corresponding limiting stopper (35) on vehicle frame (2).

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