CN2692017Y

CN2692017Y - Bicycle force saving device

Info

Publication number: CN2692017Y
Application number: CN 200420032460
Authority: CN
Inventors: 邓躬亿
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-01-08
Filing date: 2004-01-08
Publication date: 2005-04-13
Anticipated expiration: 2014-01-08

Abstract

The utility model relates to a force saving device of a bicycle, which comprises a transmission mechanism. The utility model is characterized in that the transmission mechanism is composed of a drive gear, a driven gear, a small chain disk, a chain and a flywheel, wherein the drive gear is engaged with the driven gear to drive the driven gear. The driven gear is coaxially, concentrically and rigidly connected with the small chain disk, and the flywheel is driven by the chain in order to driven a bicycle to travel. The utility model has simple and reasonable structure, no technological difficulty and low cost. The transmission mechanism adopts standard components. Especially, the force for treading is greatly reduced, and the force is saved by at least two thirds. Gears with different ratio and the small chain disk with a small diameter can attain different goals of saving force, so the utility model can alleviate the working force for people to ride bicycles.

Description

The cycle carnival power apparatus

Technical field

The utility model relates to bicycle drive, is applicable to bicycle and man, Electrical Bicycle, three-wheel vehicle, particularly a kind of cycle carnival power apparatus.

Technical background

Now, the bicycle of using in sale and people work, the life on the market is traditional driving device, and promptly chain drum drives chain, and chain drives and flies, and makes bicycle walking by the rotation of stepping on arm.Because structural design is not proper, causes people by bike the time, use bigger strength, overcomes bigger resistance, and bicycle is travelled by people's requirement speed.Therefore, feel tired in the process of moving, particularly ride long distance, feel effort, shank is tired.

Summary of the invention

The purpose of this utility model is to provide a kind of simple and reasonable for structure to society, adopts gauge member, no technical risk, and cost is low, significantly reduces the strength of pedaling, and can save the cycle carnival power apparatus that 2/3rds left and right sides power are pedaled power.

The technical solution of the utility model is finished like this.

A kind of cycle carnival power apparatus, comprise transmission device, it is characterized in that transmission device by driving gear, driven gear, little chain drum, chain, fly youngster and form, driving gear and driven gear engaged transmission, driven gear is coaxial, concentric with little chain drum, rigid attachment drives chain, fly youngster's running by the chain gear drive, order about garage and walk.

Described driving gear drives one group of driven gear engaged transmission or more than one group at least, and the driving gear diameter is greater than driven gear.

Described chainlet dish diameter is significantly smaller than existing chain drum diameter, but by after the main driven gear engagement power transmission, energy saving power and pedal one circle still keep the former speed and the former stroke distances of bicycle walking.

The utility model pin arm rotates and drives driving gear rotation with one heart synchronously, driving gear drives the driven gear engaged transmission, so the chainlet dish rotates synchronously with one heart with driven gear, chain is moved in the chainlet dribbling like this, the transmission drive of chain flies youngster rotates rear wheel, thereby orders about rickshaw, Electrical Bicycle, three-wheel vehicle walking.The ratio of number of teeth (driving gear is greater than driven gear) of choosing driving gear and driven gear just can satisfy the pin arm and turn around, and wheel changes the purpose of multi-turn stroke, and such conversion, can significantly reduce the power of pedaling.

By following Example advantage of the present utility model and effect thereof can be described.

Calculate a present bicycle people and pedal the pin arm and turn around, need pay how much power, how far bicycle can be walked again, with arbitrary group of data instance of a racing car.Following showing:

Its relevant data is as follows:

1, pin arm diameter: (df1) df1:340mm

2, chain drum diameter: (df2) df2:198mm

The chain drum number of teeth: (Z2) Z2:48

3, fly diameter: (df3) df3:68mm

Fly the number of teeth: (Z3) Z3:16

4, chain drum and fly ratio of number of teeth: (Zb) Zb=Z2: Z3

Zb＝48∶16 Zb＝3∶1

By these data of ratio of number of teeth as can be known, the pin arm rotates a circle, and car is swung and can be rotated three circles.

When calculating bicycle according to above data, the required power of pedaling on the pin arm:

Earlier hypothesis flies on the tooth calibration garden tangential component and is 50 kilograms and satisfies garage and walk condition because fly and chain drum between the transmission of power be chain, so on the chain drum tooth calibration garden tangential component still be 50 kilograms constant.

According to principle of moment balance:

Chain drum sprocket power (F2) * chain drum radius (df2/2)=pin arm is pedaled power (F) * pin arm radius (df1/2)

The pin arm is pedaled power (F)=50 * 0.198/2 ÷ 0.34/2=29.12 kilogram

The bicycle of above condition that hence one can see that, data, the people pays the power of pedaling of 29.12 kgfs, wheel can walk three the circle strokes.

Calculate now and adopt joint power apparatus bicycle, the pedal power of required pedal power of paying and saving in the condition that satisfies same propulsive effort and same stroke:

One, gear is done following design: select: (design of gears can only be sketched)

1, the ratio of number of teeth of driving gear and driven gear: (Zb)

Zb＝Z5∶Z6＝3∶1

For contrast, satisfy old terms.The pin arm turns around, and wheel can change 3 circles.

2, module of gear: (m) m=1

This modulus is selected should be feasible, and principle is more little laborsaving more.

3, select the driving gear number of teeth: (Z5) Z5=90

This selection is also more feasible.

(df ') is according to reference diameter: df '=mZ

∴ driving gear reference diameter: (df5) df5=90mm

4, the driven gear number of teeth: satisfy tooth and select Z6=90/3=30 than condition

∴ driven gear reference diameter: (df6) df6=30mm

5, it is constant that the pin arm still keeps former data: df1=340mm

6, select little chain drum and fly the number of teeth, the reference diameter unanimity, by chain gear, chain is the primary standard part.

The number of teeth: Z7=Z3=16

Reference diameter: df7=df3=68mm

7, flying tooth reference circle tangential component still is 50 kilograms and satisfies garage and walk condition.

Two, calculate the pedal power of joint power apparatus: (F ')

Still according to principle of moment balance:

F7 * df7/2=F6 * df6/2=F5 * df5/2=pedal power (F ') * df1/2

Pedal power (F ')=(F7 * df7/2)/df1/2=50 * 0.068/2 ÷ 0.34/2=10 kilogram

In view of the above as can be known, under the condition that satisfies same propulsive effort and same stroke, adopt this section power apparatus can save 19.12 kilograms of power, only with 1/3 of former power.

This section power apparatus except that driving gear and driven gear and little chain drum for the newly-increased gauge member, all the other still select former bicycle standardized component for use, required cost is not high, no technical risk.

Description of drawings

Fig. 1 is standard bicycle and transmission device structural representation.

Fig. 2 is the utility model structural representation.

Fig. 3 is the utility model structure gear running part schematic perspective view.

Among the figure: 1, pin arm; 2, chain drum; 3, fly; 4, chain; 5, driving gear;

6, driven gear; 7, little chain drum.

The specific embodiment

The utility model is not limited to following embodiment.

Among the figure shown in the 1-3, the cycle carnival power apparatus, by driving gear 5, driven gear 6, keypad 7, chain 4, fly youngster 3 and form, its driving gear 5 and driven gear 6 engaged transmission, driven gear 6 and chainlet dish 7 concentric, coaxial, rigid attachment, it drives chain 4, and the transmission of chain 4 drives and flies youngster 3, orders about the walking of bicycle and man, Electrical Bicycle, three-wheel vehicle.Its driving gear 5 drives one group of driven gear 6, and driving gear 5 diameters are greater than driven gear 6 diameters.Chainlet dish 7 diameters are significantly smaller than now general chain drum 2 diameters, are that chainlet dish 7 diameters are more little laborsaving more in principle.

Shown in Fig. 1-3, the pin arm 1 of cycle carnival power apparatus rotates and drives driving gear 5 rotation with one heart synchronously, driving gear 5 drives driven gear 6 engaged transmission, so chainlet dish 7 is synchronous with driven gear, rotation with one heart, driven gear 6 drives chain 4 simultaneously, the transmission drive of chain 4 flies youngster 3 rotates rear wheel, thereby orders about bicycle and man, Electrical Bicycle, three-wheel vehicle walking.

Claims

1, a kind of cycle carnival power apparatus, comprise transmission device, it is characterized in that transmission device by driving gear (5), driven gear (6), little chain drum (7), chain (4), fly (3) and form, driving gear (5) and driven gear (6) engaged transmission, driven gear (6) is coaxial, concentric with little chain drum (7), rigid attachment drives chain (4), fly (3) running by chain (4) transmission drive, order about garage and walk.

2, cycle carnival power apparatus according to claim 1, it is characterized in that driving gear (5) at least with one group of driven gear (6) engaged transmission, and greater than driven gear (6).

3, cycle carnival power apparatus according to claim 1 is characterized in that driving gear (5) and little chain drum (7) diameter are all less than existing chain drum (2) diameter.