CN2316246Y - Hand booster for bicycle - Google Patents

Abstract

The utility model relates to a hand booster for bicycles which is provided with a support plate on which a power shaft, a speed change drive shaft and a fork shaft are sheathed; the power shaft is fixed to a power swing rod and a sector gear; the sector gear is connected with the speed change drive shaft; the outer end of the speed change drive shaft is provided with a chain wheel; the fork shaft is provided with a wheel fork which is provided with a rubber driving wheel; the outer end of the wheel shaft of the rubber driving wheel is provided with a small chain wheel which is connected with a big chain wheel by a chain. The utility model has the advantages of reasonable structure and is fixed to a handle bar core and a front fork by the support plate making use of a hinging support frame; the rubber driving wheel approaches to press tightly the front wheel of the bicycle; the bicycle is driven forward by pulling or pushing the power swing rod.

Description

The manual assistor of bicycle

The utility model relates to a kind of bicycle assistor.

In the prior art, the bicycle assistor mainly is divided into two classes, and a class is to adopt the motor-driven assistor of motor or spark ignition engine, and such assistor has motor-driven character beyond doubt, can be without manpower, and speed is fast.But motor, storage battery or spark ignition engine make car body increase weight, when manpower drives, just relatively require great effort.In addition, adopt the assistor of electric power, storage battery needs often charging, and is cumbersome; Adopt the assistor of spark ignition engine, can cause urban air pollution and noise emission.Another kind of is energy storage automatic driving-force adding device, and this assistor has increased by a cover energy storage boosting mechanism on bicycle, though can realize reinforcing, added this power is compared very little with people's propulsive effort, acts on very not obvious.

The purpose of this utility model provides the manual assistor of a kind of bicycle, this assistor need not outer power, overcome and adopted the existing above-mentioned defective of outer power, and, it afterburning big, both manual drives separately, do not influence foot-operated separately the driving again, go up a slope, against the wind or during big load, can also hand, pin and with driving, also overcome the foot-operated separately tired easily defective that drives simultaneously.

The utility model is realized with following scheme: it is provided with stay bearing plate, be set with dynamical axis, speed change transmission shaft and fork shaft on the stay bearing plate, be fixed with power fork and big quadrant gear on the dynamical axis, big quadrant gear is by by cliding gear, thrust spring be fixed on zygote and the connection of speed change transmission shaft on the speed change transmission shaft, and hinge wheel is equipped with in the outer end of speed change transmission shaft; Wheel fork is housed on the fork shaft, and wheel is stuck by bearing wheel shaft is housed, and rubber drive wheels is housed on the wheel shaft, and a minor sprocket is equipped with in the outer end of this drive wheel wheel shaft, and minor sprocket connects with hinge wheel by chain.

During use, it is loaded on bicycle handle bar fixing on core and the front fork by articulated stand respectively by upper end hole of stay bearing plate and following stomidium, and makes rubber drive wheels be close to pressure to put on the bicycle front-wheel.After getting on the bus, a palm is lived handlebar, and one holds kinetic swing bar upper end shakes hands, the front and back push-and-pull, can pass through dynamical axis, big quadrant gear, speed change transmission shaft successively, hinge wheel, chain, minor sprocket, rubber drive wheels axle drive rubber drive wheels and rotate, and move ahead thereby drive bicycle.

The utility model modern design, rational in infrastructure, afterburning big, both can be separately manually afterburning the driving do not influence foot-operated separately the driving again, go up a slope, against the wind or during big load, the driving of can also using both hands and feet has overcome foot-operated separately tired, the tired easily defective that drives effectively.It need not use outer power in addition, has overcome to adopt the afterburning existing above-mentioned deficiency of outer power yet.

Fig. 1 is that master of the present utility model looks cutaway view.

Fig. 2 is the A-A cutaway view among Fig. 1.

Embodiment is elaborated to the utility model below in conjunction with accompanying drawing:

According to Fig. 1, shown in Figure 2,2 is stay bearing plates among the figure, be set with dynamical axis 3 on the stay bearing plate, speed change transmission shaft 11 and fork shaft 20, be fixed with power fork 1 and big quadrant gear 5 on the dynamical axis 3, big quadrant gear 5 passes through by cliding gear 8, thrust spring 10 connects with speed change transmission shaft 11 with the engaging and disengaging gear that the zygote 9 that is fixed on the speed change transmission shaft 11 is formed, hinge wheel 12 is equipped with in the outer end of speed change transmission shaft, wheel fork 22 is housed on the fork shaft 20, by bearing 23 wheel shaft 14 is housed on the wheel fork 22, rubber drive wheels 21 is housed on the wheel shaft 14, minor sprocket 15 also is equipped with in the outer end of wheel shaft 14, and minor sprocket 15 connects with above-mentioned said hinge wheel 12 by chain 13.

Propulsion power fork 1, by dynamical axis 3 and big quadrant gear 5, cliding gear 8 is rotated, this moment, cliding gear combined with zygote 9 under the effect of thrust spring 10, and drive speed change transmission shaft 11 and be rotated in the forward, be rotated in the forward thereby drive rubber drive wheels 21 by hinge wheel 12, chain 13, minor sprocket 15 and wheel shaft 14 successively.

When pulling power fork 1, cliding gear 8 does not combine with zygote 9 to direction idle running in opposite directions, that is to say that spurring power fork 1 can not realize reinforcing.For increasing work efficiency, making it equally can be to realize reinforcing when pulling power fork 1, can adorn a little quadrant gear 6 on said dynamical axis 3, little quadrant gear 6 connects by a track adjusting wheel 16 with by engaging and disengaging gear and speed change transmission shaft 11 that the cliding gear 17, thrust spring 19 and the zygote 18 that are loaded on the speed change transmission shaft 11 are formed again.

For alleviating the friction of 2 of dynamical axis 3, speed change transmission shaft 11 and stay bearing plates, prevent that the axle string is moving, said stay bearing plate 2 can be two, said dynamical axis 3, speed change transmission shaft 11 and fork shaft 20, all be processed with boss in the middle of it, two stay bearing plates 2 adopt manner with above-mentioned three 3,11 and 20 suits.Can also between dynamical axis 3 and speed change transmission shaft 11 and stay bearing plate 2, install copper sheathing 4 and copper sheathing 7 respectively additional.

Sliding or driving with foot-operated separately, promptly when not using the utility model afterburning, for preventing that driving rubber drive wheels 21 by the bicycle front-wheel rotates power fork 1 swing that causes, the installation that said hinge wheel 12 and speed change transmission shaft are 11 can be adopted the flywheel engaging and disengaging gear.

Claims (5)

1, the manual assistor of a kind of bicycle, it is characterized in that it is provided with stay bearing plate (2), be set with dynamical axis (3), speed change transmission shaft (11) and fork shaft (2 0) on the stay bearing plate (2), be fixed with power fork (1) and big quadrant gear (5) on the dynamical axis (3), big quadrant gear (5) is by by cliding gear (8), thrust spring (10) be fixed on engaging and disengaging gear and speed change transmission shaft (11) connection that the zygote (9) on the speed change transmission shaft (11) is formed, and hinge wheel (12) is equipped with in the outer end of speed change transmission shaft (11); Wheel fork (22) is housed on the fork shaft (20), wheel fork (22) is gone up and by bearing (23) wheel shaft (14) is housed, rubber drive wheels (21) is housed on the wheel shaft (14), and minor sprocket (15) is equipped with in the outer end of wheel shaft (14), and minor sprocket (15) is connected with hinge wheel (12) by chain (13).

2, assistor according to claim 1, it is characterized in that also being equipped with on the dynamical axis (3) a little quadrant gear (6), little quadrant gear (6) connects by track adjusting wheel (16) with by cliding gear (17), thrust spring (19) and the zygote (18) and the speed change transmission shaft (11) that are fixed on the speed change transmission shaft (11).

3, assistor according to claim 1, it is characterized in that said stay bearing plate (2) is two, said dynamical axis (3), speed change transmission shaft (11) and fork shaft (20) all are processed with boss in the middle of it, two stay bearing plates (2) adopt manner with above-mentioned three (3,11,20) suits.

4, assistor according to claim 3 is characterized in that adding respectively between dynamical axis (3) and speed change transmission shaft (11) and stay bearing plate (2) copper sheathing (4) and copper sheathing (7).

5, assistor according to claim 1 is characterized in that adopting between hinge wheel (12) and speed change transmission shaft (11) the flywheel engaging and disengaging gear.

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