CN202147582U

CN202147582U - Wheel driving device

Info

Publication number: CN202147582U
Application number: CN201120265138U
Authority: CN
Inventors: 梁永春
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-07-25
Filing date: 2011-07-25
Publication date: 2012-02-22
Anticipated expiration: 2021-07-25

Abstract

The utility model discloses a wheel driving device, which belongs to the field of mechanical devices and comprises a direct-current motor wheel and a power source. The direct-current motor wheel is mounted nearby the outer edge of a wheel and used for driving the wheel to move, driving force generated by the direct-current motor wheel is equivalent to friction force of the wheel and the ground when the wheel moves, and the power source is used for providing power to the direct-current motor wheel. The wheel driving device has the advantages that the wheel driving device is light, convenient and labor-saving.

Description

Wheel driver

Technical field

The utility model relates to a kind of actuating device, particularly a kind of wheel driver.

Background technology

Existing bicycle or battery-driven car all are equipped with wheel, and wheel is used to drive bicycle or battery-driven car motion.And the groundwork of wheel movement all is to utilize bar thick stick principle, all is to go to overcome the friction force of tire and ground generation and advance with a bigger power, therefore requires great effort.

With existing bicycle is that example is explained, referring to the stress model of rear wheel in the bicycle in the prior art shown in Figure 1, the motion principle of cycle wheel does, the propulsive effort F that gear produces has overcome wheel and ground-surface friction force f makes cycle racing.Referring to physical model shown in Figure 2, F*L1=f*L2, i.e. F=fL2/L1; Wherein, L1 is the distance of propulsive effort F to axis wheel, and L2 is the distance of friction force f to axis wheel; Because L2 is much larger than L1; So F, needs F=(6 times-15 times) f usually much larger than f, this is by bike the people reason that is easy to tire out just; Also be very effort of battery-driven car starting, be easy to transship the reason that burns out motor.

The utility model content

In order to overcome the defective of above-mentioned prior art, the utility model embodiment provides a kind of wheel driver with light laborsaving effect.Said technical scheme is following:

A kind of wheel driver; Comprise direct current (DC) wheel and propulsion source; Said direct current (DC) wheel is installed near the outer rim of said wheel; Said direct current (DC) wheel is used to drive said wheel movement, and the propulsive effort that produces of said direct current (DC) wheel is when being equivalent to the motion of said wheel and ground-surface friction force, and said propulsion source is used for to said direct current (DC) wheel power being provided.

Particularly, said wheel is a cycle wheel, and said direct current (DC) wheel is fixed on the car body of bicycle, and contacts with the outer rim of said wheel, and said propulsion source is a lithium cell.

Particularly; Said wheel is an automotive wheel, and said direct current (DC) wheel is fixed on through the motor wheel shaft on the wheel shaft of automobile, and the wheel shaft of said motor wheel shaft and said automobile is perpendicular; Said direct current (DC) wheel contacts with the outer hub of said wheel, and said propulsion source is electrical generator, battery pack or solar power.

The beneficial effect that the technical scheme that the utility model embodiment provides is brought is: compare prior art; The utility model embodiment drives said wheel movement through said direct current (DC) wheel; And with ground-surface friction force, so said wheel driver had light labour-saving advantage when the propulsive effort that said direct current (DC) wheel produces was equivalent to the motion of said wheel.

The utility model is suitable for being installed in bicycle, Electrical Bicycle, battery-driven car or the electronlmobil.

Description of drawings

In order to be illustrated more clearly in the technical scheme among the utility model embodiment; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the stress model of the wheel of bicycle in the prior art;

Fig. 2 is the physical model of Fig. 1;

Fig. 3 is the structure diagram of the said wheel driver of the utility model one embodiment;

Fig. 4 is the stress model of Fig. 3;

Fig. 5 is the physical model of Fig. 4;

Fig. 6 is the simplification physical model of Fig. 5;

Fig. 7 is the structure diagram of the said wheel driver of the another embodiment of the utility model;

Fig. 8 is the utility model structure diagram of the said wheel driver of an embodiment again;

Fig. 9 is the stress model of Fig. 7.

Among the figure:

10 wheels, the wheel shaft of 11 automobiles,

20 direct current (DC) wheels, 21 motor wheel shafts,

30 propulsions source,

The F propulsive effort,

Friction force between f wheel and the ground,

L1 is the distance of propulsive effort F to axis wheel,

L2 is the distance of friction force f to axis wheel.

The specific embodiment

For the purpose, technical scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model embodiment is done to describe in detail further below.

Referring to Fig. 3; The described wheel driver of the utility model; Comprise direct current (DC) wheel 20 and propulsion source 30, said direct current (DC) wheel 20 is installed near the outer rim of said wheel 10, and said direct current (DC) wheel 20 is used to drive said wheel 10 motions; And when the propulsive effort F (referring to Fig. 4) that said direct current (DC) wheel 20 produces is equivalent to the motion of said wheel 10 and ground-surface friction force f (referring to Fig. 4), said propulsion source 30 is used for to said direct current (DC) wheel 20 power being provided.

Particularly, as shown in Figure 3, in the present embodiment, said wheel 10 is a cycle wheel, and said direct current (DC) wheel 20 is fixed on the car body of bicycle, and contacts with the outer rim of said wheel 10, and said propulsion source 30 is a lithium cell.

Like Fig. 4 and physical model shown in Figure 5, can know according to bar thick stick principle: F*L1=f*L2, i.e. F=fL2/L1, because L2=L1, so F=f, so the said wheel driver of present embodiment has light labour-saving advantage.

Referring to Fig. 3,75kg is heavy altogether with sportsman's car people, and at urban pavement, the weather of gentle breeze is at the uniform velocity exercised; Driving efficiency 100%, direct current (DC) wheel 20 and wheel 10 minimized friction coefficients 0.5 model meter are pressed data with existing, about 25 newton of friction drag f; With 26 inches tires is example, if advance with middling speed, gets people power F=10f=250 newton by bike through bar thick stick principle; And use DC machine, average torsion can arrive about 48 newton, selects 15W/12V/3000 rev/min for use; Diameter 50mm motor-driven, producible speed are V=3000*3.14*50*60/1000000=28.26KM/H, and be very suitable.

Particularly, as shown in Figure 7, in the present embodiment; Said wheel 10 is an automotive wheel, and said automobile is two to drive automobile, and a wheel driver respectively is installed on each wheel 10; Said direct current (DC) wheel 20 is fixed on the wheel shaft 11 of automobile through motor wheel shaft 21; Said motor wheel shaft 21 is perpendicular with the wheel shaft 11 of said automobile, and said direct current (DC) wheel 20 contacts with the outer hub of said wheel 10, and said propulsion source is electrical generator, battery pack or solar power.

Certainly, those of ordinary skills can know that said wheel driver can also be installed in the 4 wheel driven automobile; Particularly; As shown in Figure 8, present embodiment and difference embodiment illustrated in fig. 7 only are: in this example, four wheels 10 all are equipped with said wheel driver; All the other parts are identical, and this example repeats no more.

The physical model of automotive wheel as shown in Figure 9 can be known according to bar thick stick principle: F*L1=f*L2, i.e. F=fL2/L1; Owing to L2 is approximately equal to L1, so F is approximately equal to f, the power required owing to the interior axle driving of the force rate tradition that is the outer rim driving is little a lot; Start-up operation is lowering energy-saving more; Make the starting of electronic vapour pond faster, hill climbing ability is stronger, and complete vehicle structure is simpler.

The above is merely the preferred embodiment of the utility model, and is in order to restriction the utility model, not all within the spirit and principle of the utility model, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the utility model.

Claims

1. wheel driver; It is characterized in that; Comprise direct current (DC) wheel and propulsion source, said direct current (DC) wheel is installed near the outer rim of said wheel, and said direct current (DC) wheel is used to drive said wheel movement; And when the propulsive effort that said direct current (DC) wheel produces is equivalent to the motion of said wheel and ground-surface friction force, said propulsion source is used for to said direct current (DC) wheel power being provided.

2. wheel driver as claimed in claim 1 is characterized in that, said wheel is a cycle wheel, and said direct current (DC) wheel is fixed on the car body of bicycle, and contacts with the outer rim of said wheel, and said propulsion source is a lithium cell.

3. wheel driver as claimed in claim 1; It is characterized in that; Said wheel is an automotive wheel, and said direct current (DC) wheel is fixed on through the motor wheel shaft on the wheel shaft of automobile, and the wheel shaft of said motor wheel shaft and said automobile is perpendicular; Said direct current (DC) wheel contacts with the outer hub of said wheel, and said propulsion source is electrical generator, battery pack or solar power.