Bicycle (versions)

FIELD: transport.

SUBSTANCE: invention relates to bicycles with two front wheels. Extra front wheel 10 is fitted parallel with main front wheel 2, its diameter d making 0.7 to 0.9 of main front wheel diameter D. Extra front wheel axle is arranged below that of main front wheel 2 loaded by their dead weight. Distance L between main front wheel 2 and extra front wheel 10 makes main front wheel 0.1 to 0.2 of D. Both front wheels 2, 10 are equipped with spring dampers. In compliance with one version, wheels 2, 10 are arranged in symmetry on both sides of bicycle frame. In compliance with another version, main front wheel 2 is arranged in bicycle frame plane while that of additional front wheel 10 stays there aside.

EFFECT: higher stability and smoothness.

5 cl, 4 dwg

 

The technical field to which the invention relates.

The invention relates to land vehicles, driven by human muscle force, in particular for bicycles.

The level of technology

In the prior art it is known a large number of bikes that are designed for different operating conditions.

The prior art Bicycle frame containing the main front wheel, rear wheel, means mounting the wheels, the rotational drive of the rear wheels, saddle, handlebar (patent RU 2264945 C1 IPC class VC 15/00, published 27.11.2005). This bike provides ample opportunities for setting.

As the closest analogue is selected bike, containing frame, the main front wheel, rear wheel, means mounting the wheels, the rotational drive of the rear wheels, saddle, handlebar (patent RU 2379211 C1 IPC class VC 3/00, published 20.01.2010). This famous bike made all-wheel-drive and is designed for use in mountain areas and areas with difficult terrain. This bike has a high permeability. The disadvantage is the complexity of the design, the high cost of manufacture and operation.

Disclosure of inventions

The present invention is the creation of a Bicycle having high smoothness and stability in dvizhenii difficult road conditions.

During the solution of this task is to achieve the following set of technical results: increased stability driving on mountain roads, rough terrain and rocky slopes; improved traction; increased smoothness; improving the reliability of the bike.

This combination of technical result is achieved by the fact that the Bicycle includes a frame, a main front wheel, rear wheel, means mounting the wheels, the rotational drive of the rear wheels, saddle, handlebar, in parallel with the main front wheel additional tool holder has an extra front wheel, the diameter of which ranges from 0.7 to 0.9 diameter of the main front wheel, the axis of rotation of the additional front wheel, loaded only by its own weight, is located below the axis of rotation of the main front wheels, loaded only by its own weight, so that the bottom point of the main front wheels and an extra front wheels are on the same level, the distance between the main front wheel and additional front wheel is from 0.1 to 0.2 of the diameter of the main front wheels, both front wheels are installed with spring shock absorbers, stiffness in compression of the shock absorber extra front wheel is equal to 0,do 0,9 rigidity of the main absorber of the front wheel.

This combination of technical result is achieved by the fact that the Bicycle includes a frame, a main front wheel, rear wheel, means mounting the wheels, the rotational drive of the rear wheels, saddle, handlebar, in parallel with the main front wheel additional tool holder has an extra front wheel, the diameter of which ranges from 0.7 to 0.9 diameter of the main front wheel, the axis of rotation of the additional front wheel, loaded only by its own weight, is located below the axis of rotation of the main front wheels, loaded only by its own weight, so that the bottom point of the main front wheels and an extra front wheels are on the same level, the distance between the main front wheel and additional front wheel is from 0.1 to 0.2 of the diameter of the main front wheels, both front wheels are installed with spring shock absorbers, stiffness in compression of the shock absorber extra front wheel has a value of from 0.6 to 0.9 stiffness of the shock absorber main front wheels, the front wheels, as well as their means of attachment are located symmetrically on both sides of the Bicycle frame.

This combination of technical result is achieved by the fact that the Bicycle includes a frame, a main front stake is about, rear wheel, means mounting the wheels, the rotational drive of the rear wheels, saddle, handlebar, in parallel with the main front wheel additional tool holder has an extra front wheel, the diameter of which ranges from 0.7 to 0.9 diameter of the main front wheel, the axis of rotation of the additional front wheel, loaded only by its own weight, is located below the axis of rotation of the main front wheels, loaded only by its own weight, so that the bottom point of the main front wheels and an extra front wheels are on the same level, the distance between the primary front wheel and additional front wheel is from 0.1 to 0.2 of the diameter of the main front wheel both front wheels are installed with spring shock absorbers, stiffness in compression of the shock absorber extra front wheel has a value of from 0.6 to 0.9 stiffness of the shock absorber main front wheels, the main front wheel is located in the same plane with the frame of the Bicycle, and an extra front wheel is located on the side of the frame.

The distinction of this invention is the presence of the second front wheel parallel to the main front wheel.

Technical results are achieved also by the fact that an additional means of securing additional front to the forest made with the possibility of withdrawal.

Technical results are achieved also by the fact that the shock absorbers of the front wheels is made with adjustable stiffness.

Brief description of drawings

Figure 1 shows a General view of the layout of the bike.

Figure 2 shows the front view at the location of the additional front wheel on the side of the Bicycle frame.

Figure 3 shows the front view with the symmetric arrangement of the additional front wheel and the main front wheel.

Figure 4 shows the layout of the wheels when the tilt of the bike in motion.

The implementation of the invention

The bike has a traditional layout of the main elements. The Bicycle includes a frame 1, a basic front wheel 2, a rear wheel 3, means 4 and 5 holding the front and rear wheels, respectively, the drive 6 speed rear wheel, the saddle 7, the wheel 8. These elements may be performed by any known method. In parallel with the main front wheel 2 in the additional fastening means 9 are the additional front wheel 10, the diameter d of which is from 0.7 to 0.9 of the diameter D of the primary front wheels 2. As a means of attachment of the wheels can be used plugs used in most of the rental.

The additional axis of rotation of the front wheel 10, which is loaded only by its own weight, is located below the axis of rotation jus the th front wheel 2, loaded only by its own weight. The distance between the axes chosen so that the lowest point And the main front wheel 2 and the lower point B additional front wheels 10 are on the same level. Thus, in the free condition of the wheels (the free state of the wheels takes place when they are not operating no load other than its own weight, for example, when the Bicycle is suspended in a horizontal position for the frame) between the axes of rotation of the main front wheels 2 and the additional front wheel 10 has a distance Δ from 0.05 to 0.15 of the diameter D of the primary front wheels 2.

The distance L between the main front wheel 2 and the additional front wheel 10 is from 0.1 to 0.2 of the diameter of the main front wheel 2. The distance L is measured between points a and B (see figure 2).

Both of the front wheels 2 and 10 is installed with a spring shock absorbers 11 and 12, respectively. Stiffness in compression of the shock absorber 12 additional front wheel 10 has a value of from 0.6 to 0.9 stiffness of the shock absorber 11 of the main front wheel 2.

According to one embodiments of the invention the main 2 and an additional 10 front wheels, as well as their means of attachment 4 and 9 are located symmetrically on both sides of the frame 1 of the bike. This option is shown in figure 2.

According onomous variants of the invention the main front wheel 2 is located in the same plane with the frame 1 bike and an extra front wheel 10 is located on the side of the frame 1. This option is shown in figure 3.

Additional means 9 additional fastening of the front wheel 2 can be made with the possibility of withdrawal, i.e. separation from frame 1.

The shock absorbers 11 and 12 of the front wheels can be made with adjustable stiffness.

The device operates as follows.

In mountainous terrain, road defects (dents, holes)in the presence of obstacles to movement in the form of stones, etc. the main objective is to ensure the stability of the bike (especially at low speeds) and comfort of the rider. Speed characteristics are not dominant in these conditions.

In operation, the bike does not differ from most famous bikes. The muscular effort of the rider is transmitted to the propeller, which is the rear wheel of a Bicycle. The design feature of this invention is the presence of the second front wheel and the options that are included as features in the claims.

Among the topics included in the claims, and achievable technical result is the following causal link.

The additional front wheel 10 that is installed in the additional fastening means in parallel with the main front wheel, mn is Socrate increases the bearing area of the bike, that increases stability in all modes and especially at low speeds.

The choice of the diameter d of the additional front wheel 10 in the range from 0.7 to 0.9 of the diameter D of the primary front wheels 2 entails different angular speed of rotation of the wheels during movement of the Bicycle. Often when driving in difficult road conditions, especially on the stones, the front wheel of the Bicycle is subjected to dynamic loads and may be formed dents and other defects that reduce the smoothness and comfort of the rider. In the case of defects immediately on two wheels 2 and 10 due to, for example, hitting an obstacle, different diameters of wheels 2 and 10 and different angular speed of rotation does not allow these defects move in parallel and synchronously, and reduce operational characteristics of the bike. The dent on the additional wheel 10 after hitting ahead of a dent in the main wheel 2 and, thus, dents will be contacting in the road on the queue, but not together. The presence of shock absorbers on both wheels to smooth out the bumps from defects wheels. In addition, the presence of additional wheel 10 increases the reliability of the bike, because when damaged tire main wheel 2, the load could be distributed to additional wheel 10 and the possibility of further exploitation much will last. If di is the m d additional wheel 10 is less than 0,7D characteristics of permeability additional wheel 10 will be significantly worse than that of the main wheel 2, as the passability of a vehicle is directly proportional to the size of the wheels. When executing a diameter d greater than 0,9D formed defects will move almost synchronously, and the result will not be achieved.

The location of the axis of rotation of the additional front wheel 10, which is loaded only by its own weight, below the axis of rotation of the main front wheel 2, which is loaded only by its own weight, so that the lower point of the main front wheels and an extra front wheel was on the same level, also increases the stability of the bike as vertical load at once perceived the two wheels, and bumpers both wheels from the very beginning of the motion damping the bumps in the road.

The choice of the distance L between the main front wheel 2 and the additional front wheel 10 in the range from 0.1 to 0.2 of the diameter D of the primary front wheel 2 due to the sustainability of the bike in motion. When driving on difficult roads cyclist deviates from the vertical position at an angle α (see figure 4). On the conducted experimental estimates the maximum deviation is from 6 to 12 degrees. The distance L is selected such that the projection of the upper main point of the front wheel 2 when the maximum deviation was point the additional support of the front wheel 10. On the other hand, the distance L cannot be increased, as this will reduce the mobility and maneuverability of the bike.

The choice of stiffness in compression of the shock absorber 12 additional front wheel 10 in the range from 0.6 to 0.9 stiffness of the shock absorber 11 of the main front wheel 2 is required to improve the ride. As is known, the vibration has a maximum amplitude at resonance, i.e. when the driving frequency of impact coincides with the natural frequency of the mechanism. If you run the shock absorbers 11 and 12 are approximately equal stiffness, the two wheels 2 and 10 will have approximately the same natural frequency and resonance will occur in them simultaneously, which will lead to strong shaking. On the other hand, the wheel 10 operates in several different conditions than the main front wheel 2. When the movement of the cyclist chooses the most favorable trajectory, focusing on the main front wheel 2. The expedient obstacles to overcome in the position of the plane of the wheel when it is perpendicular to the surface of the obstacle, i.e. frontal collisions. The rider provides a frontal collision of the primary front wheels 2. However, additional front wheel 10 is often overcomes obstacles not frontal collisions at him, and lateral. If the stiffness of the shock absorber 12 additional p is renego wheel 10 is too high, it will not be able to run into the side of the obstacle and the movement will be hindered.

The location of the primary and secondary front wheels, as well as their fastening means symmetrically on both sides of the Bicycle frame further enhances the usability of the bike, reduces the load on the wheel

The location of the main front wheels in the same plane with the frame of the bike, and the additional front wheel on the side of the frame allows you to perform additional front wheel 10 is removable. Thus, the bike gets a traditional look and can be effectively used on conventional roads.

The performance of the shock absorbers 11 and 12 adjustable allows you to adapt the bike to different road conditions.

1. The bike frame containing the main front wheel, rear wheel, means mounting the wheels, the rotational drive of the rear wheels, saddle, handlebar, characterized in that in parallel with the main front wheel additional tool holder has an extra front wheel, the diameter of which ranges from 0.7 to 0.9 diameter of the main front wheel, the axis of rotation of the additional front wheel, loaded only by its own weight, is located below the axis of rotation of the main front wheels, loaded only by its own weight, so that the bottom point of the basis of the tion of the front wheels and an extra front wheels are on the same level, the distance between the primary front wheel and additional front wheel is from 0.1 to 0.2 of the diameter of the main front wheels, both front wheels are mounted on the frame with spring shock absorbers, stiffness in compression of the shock absorber extra front wheel has a value of from 0.6 to 0.9 stiffness of the shock absorber main front wheel.

2. The bike frame containing the main front wheel, rear wheel, means mounting the wheels, the rotational drive of the rear wheels, saddle, handlebar, characterized in that in parallel with the main front wheel additional tool holder has an extra front wheel, the diameter of which ranges from 0.7 to 0.9 diameter of the main front wheel, the axis of rotation of the additional front wheel, loaded only by its own weight, is located below the axis of rotation of the main front wheels, loaded only by its own weight, so that the bottom point of the main front wheels and an extra front wheels are on the same level, the distance between the primary front wheel and an extra front wheel is from 0.1 to 0.2 of the diameter of the main front wheels, both front wheels are mounted on the frame with spring shock absorbers, stiffness in compression of the shock absorber extra front wheel extending t is a value of from 0.6 to 0.9 stiffness of the shock absorber main front wheel, the primary and secondary front wheels, as well as their means of attachment are located symmetrically on both sides of the Bicycle frame.

3. The bike frame containing the main front wheel, rear wheel, means mounting the wheels, the rotational drive of the rear wheels, saddle, handlebar, characterized in that in parallel with the main front wheel additional tool holder has an extra front wheel, the diameter of which ranges from 0.7 to 0.9 diameter of the main front wheel, the axis of rotation of the additional front wheel, loaded only by its own weight, is located below the axis of rotation of the main front wheels, loaded only by its own weight, so that the bottom point of the main front wheels and an extra front wheels are on the same level, the distance between the primary front wheel and an extra front wheel is from 0.1 to 0.2 of the diameter of the main front wheels, both front wheels are mounted on the frame with spring shock absorbers, stiffness in compression of the shock absorber extra front wheel has a value of from 0.6 to 0.9 stiffness of the shock absorber main front wheels, the main front wheel is located in the same plane with the frame of the Bicycle, and an extra front wheel is located on the side of the frame.

4. The bike is .3, characterized in that additional means of securing additional front wheel made with the possibility of withdrawal.

5. The Bicycle according to claim 3, characterized in that the shock absorbers of the front wheels is made with adjustable stiffness.



 

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