SU1507639A1 - Rider-driven vehicle drive with reciprocating pedals - Google Patents

Abstract

The invention relates to cycling. The purpose of the invention is to facilitate control by expanding the range of adjustment of the drive ratio. The transmission for a bicycle or bicycle contains two levers 1 pedals 2, two levers 5, together with the levers 1 sitting freely on the axis 3. In the levers 5, the slats 6 have ear for thrust 11. When the slats 6 move along the lever 5, it changes radius r. Axis 3 may rotate in the sleeves of the bicycle frame body. Gear rack coupled with rail

A cable 9 is fastened to one end of the latter, the second end of which is attached to the handle 12. 11 Il.

Description

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The invention relates to bicycles and can be used in a bicycle or cycle mobile, as well as used in vehicles with a low-power engine.

The purpose of the invention is to facilitate control by expanding the range of adjustment of the drive ratio.

Fig. 1 shows a driven wheel with a bicycle pedal drive (first option)} in Fig. 2 — the driving wheel of the bicycle (the first option); on fig.Z - carriage; FIG. 4 shows a drive wheel drive 15} in FIG. 5 a bicycle, a general view (the second option); in Fig.6 - carriage assembly {in Fig.7 - section A-A in Fig.6; on Fig - section bb in Fig.7; figure 9 - node axis 20 of the drive wheel; figure 10 is a section bb In figure 9; figure 11 - section GG in figure 10.

The gear for a bicycle (Figures 1-4) contains two levers 1 of pedals 2, an axis 25 of a carriage 3, on which two bearings 4 are seated from two ends and on which two levers 1 and two levers 5, rigidly connected to each other, are mounted a unit that freely rotates with respect to the stationary axis of the carriage 3. On the lever 5, the rail 6 moves, with which the gear rack 7 is engaged. The other rail and gear gear are mounted on the lever 8, rigidly fixed -. on the overrunning clutch drive wheels. The flexible shaft 9 is rigidly connected to the shaft of the pinion gear 7 of the lever 5. Two springs 10 Q are installed to return the levers 5 and 8 to the initial position. between the lever 8 and the frame of the bike. The rails are hingedly connected to each other by a pull 11, Rack-and-pinion gear 7 on the carriage lever with one end rigidly connected to the handle 12, which is freely seated on the steering wheel, by means of a flexible shaft 9. The second end of this gear is rigidly connected with the pinion gear end the second carriage lever using a flexible shaft 13,

In order to synchronize the speeds of the pinion gears, the carriage arms and the overrunning clutches on their shanks are fitted with drums 14, which are interconnected by tro-picks 15.

The gear ratio between the bars is equal to one.

There are clamps 16 on the pedals x 2 for kicking the pedals back.

When the cyclist turns the handle 12, this movement through the flexible shaft 9 is transmitted to the pinion gear 7 and the rail 6 moves in different directions, i.e. one up and the other down, the gear ratio between the pedals and the rear wheel varies continuously in a wide range.

The gear for a bicycle (Figures 5-11) contains two levers 1, two pedals 2, two levers 5 at the same time as the levers 1 sitting freely on axis 3, on which a block of two gears 17 having a groove for cable 18 is mounted on the keys. In the levers 5, the slats 6 move with an ear 19 for the thrust 10. When the slider 6 moves in the groove of the lever 5, the radius R changes. Axis 3 can turn in the hubs 20 of the bicycle frame frame 21. The gear wheel 7 is engaged with the slider 22, one end of which is fixed to the cable 23, the second end of which is attached to the handle 12.

Fig. 10 shows a drive axle assembly, where the hub 26 of a bicycle wheel rotates on axis 24 on two bearings 25. On the hub 26, two ratchets 27 are mounted on the thread. The swinging lever 28 on the balls 29 is fixed on the sleeves 30, on it there are two spring-loaded dogs 31 that drive the wheel. On the hub of the lever 28, the gear 32 sits freely. The lever 28 is spring-loaded with a spring 10 to return the pedals to their original position. The axis 24 is secured in the fork 33 of the bicycle and secured with two nuts.

The transmission works as follows.

The cyclist sits on the saddle and presses the pedals with his legs, alternately turning them at an angle of approximately 45, performing swinging movements with his feet. Each movement of the pedal is transmitted downward to the rear wheel through levers 5 and 28 with th 10 and the wheel turns where i is the gear ratio of the transmission. Pedal 2 is reset to its initial position at the expense of spring 10. Transmission operates independently of each pedal or simultaneously with two pedals. Such a transmission necessarily requires hand brakes on the wheels.

The proposed transfer has the following advantages.

The torque on the pedals is maximal and fluctuates slightly. The absence of a chain reduces mechanical friction and increases efficiency. Transmission makes it possible to change the gear ratio between the pedals and the rear wheel smoothly, steplessly in a wide range by turning the handle on the handlebars.

When the bicycle moves by inertia or a mountain, the cyclist stands on the pedals, the lever travel is limited by rigid stops (not shown).

In the proposed gear, the pedals only swing without making a full turn, so you can lower the seat lower, this will reduce the overall height of the bike and increase its stability.

Claims (1)

Invention Formula The muscular drive of the vehicle with a reciprocating motion of the pedals, comprising pedal levers mounted on the carriage axle, each of the levers is associated with the change of the transfer ratio of the gear, made in the form of gearing, one element of which is connected with the lever and the other through flexible rod with the elements of the drive wheel through the overrunning clutches and elastic element to return the levers with pedals to the initial position, characterized in that, in order to provide control by extending the range of adjustment of the drive ratio, each of the levers with pedals is provided an additional lever rigidly connected with it, on the additional lever is placed a rail for engagement with a gear connected by a flexible rod with an additional gear mounted on the lever and rigidly connected with an asterisk sprocket, while it is equipped with a synchronization device in the form of drums mounted on additional levers and levers connected to each other by a flexible body, and one of the pinion gears is connected to a control element placed on the steering wheel. ten 9a.g  rieZ / " fig / t UChAL 1507639 6 FIG. iO Editor M.Nedoluzhenko Compiled by N.Nikolaev Tehred M. Khodanich Proofreader N. Borisova 1507639 26 27 11