CN2178675Y - Speed-changed health-care bicycle - Google Patents

Abstract

The utility model relates to a speed changing body building bicycle. A sprocket gear fixed with the flywheel of a rear shaft is added on the flywheel of a rear shaft. A freewheel which is the same as the flywheel of a rear shaft and a steering wheel are arranged between the rear shaft and the wheel disc of a pedal crank. The wheel disc of a pedal crank is connected with the sprocket gear with a ratchet wheel on the flywheel of a rear shaft, a sprocket gear with a ratchet wheel on the added flywheel and the steering wheel by chains. The fixed sprocket gear on the flywheel of a rear shaft is connected with the fixed sprocket gear on the newly added flywheel by a chain. The bicycle always moves forwards no matter a rider steps forwards or backwards, which increases the body building function of the bicycle to enable the riding of the bicycle to achieve the double purposes of travel and body building. The utility model is suitable for the reformation of old bicycles and the production of new bicycles.

Description

Speed-changed health-care bicycle

The utility model relates to a kind of bicycle, and particularly a kind of speed change body-building bicycle belongs to the improvement to variable speed bicycle.

Bicycle is the desirable vehicle of riding instead of walk.Its specification and style alter a great deal in recent years, and the particularly appearance of variable speed bicycle has been injected new life to bikedom, no matter youngster, the elderly, have a variable speed bicycle and become fashion.But blemish in an otherwise perfect thing is, though present variable speed bicycle has a plurality of gears, generally have only shelves commonly used, other gear and few usefulness, in addition, existing bicycle designs has only been paid attention to rapid change, and ignored body-building purpose by bike, present bicycle can only a direction be ridden crank wheel disk, promptly can only pedal forward, make some muscle of shank can not get motion, body-building effect is undesirable.

The purpose of this utility model be to provide a kind of can forward and the speed change body-building bicycle of oppositely foot-operated crank wheel disk, strengthened body-building effect by bike, overcome the deficiency of prior art.

For realizing the purpose of the utility model, on traditional bicycle basis, between foot-operated crank wheel disk and trailing wheel, set up a flywheel and turned to sprocket wheel, increased a fixed chain wheels of fixing with flywheel on rear flywheel, the flywheel between foot-operated crank wheel disk and the rear flywheel is provided with the sprocket wheel of band ratchet and the fixed chain wheels of fixing with this flywheel.

The flywheel that increases newly is fixed on the chain stay pipe of back left and right sides chain stay Guan Junke with the pedestal that turns to sprocket wheel.Make crank wheel disk, rear flywheel, the flywheel that increases newly and turn to sprocket wheel on same plane, can guarantee steady transmission, chain bind mode between each wheel is such: foot-operated crank wheel disk, the sprocket wheel of the band ratchet on the rear flywheel, use chain coupling between the sprocket wheel of the band ratchet on the flywheel that turns to sprocket wheel and increase newly, fixed chain wheels chain coupling on fixed chain wheels on the rear flywheel and the flywheel that increases newly, like this: when foot-operated crank wheel disk clockwise rotates, when promptly pedaling forward, chain drives rear flywheel sprocket wheel cw to be changeed, make also cw commentaries on classics of rear wheel, bicycle is to moving ahead, at this moment, fixed chain wheels on the rear flywheel by chain gear the fixed chain wheels cw on the flywheel that increases newly is changeed, and the flywheel that increases newly still dallies along with rotation with the chain conter clockwise.

When foot-operated crank wheel disk rotates counterclockwise (people kicks backward), chain drives the flywheel cw that increases newly to be changeed, fixed chain wheels cw on the flywheel that transmission simultaneously increases newly changes, at this moment, the fixed chain wheels cw that drives on the rear flywheel by chain changes, rear wheel still can be changeed by cw, and bicycle still marches forward.

The power wheel on the change flywheel and the diameter of wheel flutter can obtain different road speeds.

When the foot-operated crank wheel disk of fitness for purpose rotated counterclockwise (when promptly kicking backward), the gait of march of the bicycle speed of should the bicycle when pedaling forward advancing was to eliminate people's incompatibility sense.

As long as in design, make rear flywheel identical, and can guarantee to pedal forward speed greater than the speed of a motor vehicle of kicking backward greater than wheel flutter with the flywheel size that increases newly.

Be noted that the flywheel that increases newly between crank wheel disk and the rear flywheel and wheel flutter are not crucial in the installation site up and down of back chain stay pipe, the two can be changed up and down, but needs to guarantee that each wheel comprises connects chain in separately common plane.Traditionally, the flywheel that increases newly is installed on the back chain stay pipe in the outside.

The obtained positive effect of the utility model is: it has improved the body-building function of bicycle, has increased the kind of variable speed bicycle, is applicable to that the people of various age brackets rides usefulness, and simple in structure, cost is low, and can be used for used car repacking and new car manufacturing.

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

What Fig. 1 provided is structural representation of the present utility model.

Fig. 2 is the structural representation of the flywheel on the bicycle rear axle.

Fig. 3 is the structural representation of the flywheel between crank wheel disk and the rear flywheel.

As shown in Figure 1, the flywheel A on this bicycle rear axle is similar to traditional flywheel, has just increased a fixed chain wheels 4 newly at the flywheel inner ring.As shown in Figure 2, the sprocket wheel 3 of band ratchet cooperates with flywheel by ratchet sheet 13, and fixed chain wheels 4 is an one with flywheel, and fastening with hind axle skin 11, shown in 12 is bicycle rear axle.With reference to Fig. 1 and Fig. 3, on the back chain stay pipe 9 between flywheel A and the foot-operated crank wheel disk 1, welded a support 10, support is provided with flywheel B and wheel flutter 6, flywheel B is above wheel flutter 6, flywheel B is identical with rear flywheel A, there is the sprocket wheel 7 that matches with flywheel through ratchet sheet 15 outer ring, inner ring has and flywheel all-in-one-piece fixed chain wheels 8, flywheel B through 14 on axle on support 10, wheel flutter 6 usefulness axle is fixed on support 10 bottoms, crank wheel disk 1, the sprocket wheel 3 of the band ratchet of flywheel A, wheel flutter 6, the sprocket wheel 7 of the band ratchet on the flywheel B connects mutually with main chain bar 2, and they can guarantee that transmission is stable all in same plane.

Fixed chain wheels 4 on the flywheel A, fixed chain wheels 8 usefulness on the flywheel B are paid a chain 5 and are connect mutually, the two be in above-mentioned parallel plane plane in.Such design has guaranteed that running part is more steady and reliable.

Wheel flutter 6 is and the supporting toothed wheel of main chain bar, can makes chain-driving freely, unlikely skidding.

The interior cover of each flywheel is made of one to good with fixed chain wheels separately.

Claims (5)

1, a kind of speed change body-building bicycle, comprise vehicle frame, wheel, running part, vehicle seat and handlebar in the structure, it is characterized in that running part comprises the flywheel A on the rear axle, foot-operated crank wheel disk 1 and flywheel B between flywheel A and crank wheel disk 1 and wheel flutter 6, flywheel A is provided with the sprocket wheel 3 of band ratchet and the fixed chain wheels 4 of fixing with flywheel A; The sprocket wheel 7 of band ratchet and the fixed chain wheels 8 of fixing with flywheel B are arranged on the flywheel B, the pedestal of flywheel B and wheel flutter 6 is installed on the back chain stay pipe 9, connect by main chain bar 2 between the sprocket wheel 7 of the band ratchet on sprocket wheel 3, wheel flutter 6 and the flywheel B of the band ratchet on foot-operated crank wheel disk 1, the flywheel A, connect with paying chain 5 between fixed chain wheels 4 on the flywheel A and the fixed chain wheels 8 on the flywheel B, crank wheel disk 1, flywheel A, flywheel B and wheel flutter 6, and main wheel bar 2 is in same plane.

2, by the described variable speed bicycle of claim 1, it is characterized in that the pedestal of flywheel B and wheel flutter 6 is fixed on the support 10, support 10 is fixing with back chain stay pipe 9, and flywheel B is above wheel flutter 6.

3, by the described variable speed bicycle of claim 1, it is characterized in that flywheel B is below wheel flutter 6.

4, by the described variable speed bicycle of claim 1, it is characterized in that flywheel A is identical with the specification of flywheel B.

5, by the described variable speed bicycle of claim 1, it is characterized in that wheel flutter 6 is the toothed wheel that have sprocket.

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