Drive for bicycles and velomobiles

FIELD: drives with reciprocating foot levers and with energy accumulation and release units.

SUBSTANCE: proposed drive includes drive shaft with cranks (1) and pedals, driven shaft with overrunning clutch in drive wheel and ropes (4). Secured to right-hand crank (1) is double-arm lever (2) which may be also mounted on drive shaft; ends of this lever have curvilinear surfaces through which ropes (4) are thrown which are secured on ends of double-arm lever (2). Center parts of ropes (4) are wound on two pulleys on which they are secured; pulleys are mounted on drive wheel for engagement with it through overrunning clutches. Fitted in center portion of double-arm lever (2) is lever (7) provided with elastic drive, spring (8) for example; second end of spring (8) is caught by frame. Proposed drive ensures accumulation of energy of foot push at the end of turn of crank.

EFFECT: enhanced efficiency.

4 dwg

 

The device is designed for converting muscle power into rotational.

The invention relates to machines, mechanisms, vehicles and other devices that use muscular thrust (bicycles, pedal cars, rickshaws and so on).

Numerous variants of the actuators, designed to increase the efficiency of the existing valoprovoda consisting of pedals, cranks, leading and slave sprockets and flexible (chain) transfer.

To reduce muscular effort when riding on roads with variable load (alternating ascents, descents, rough roads etc) at this point, apply the actuators are equipped with a large number of stars of different diameters. By throwing out the chain from one sprocket to another, changing the gear ratio of the drive,

Such transfer, in spite of dissemination and long history are unreliable, expensive and difficult to manufacture products.

Some of the inventors rack and pinion drives, though, and give increase efficiency, is also complex and expensive to produce.

A device (patent RU №2053154, filing date 20.07.93 g), taken as the closest analogue, which uses a different approach to increase efficiency. In this drive pedal to rotate in the opposite direction. The effect of increasing the efficiency of the estuaries and the ü is achieved through optimization of the kinematics of the movements of the legs of a person, with the added effort of hands by repulsing them on the wheel. It should be noted that in this case we use only the portion of the path of rotation. In particular, when straightening the leg at the knee, i.e. when the intensity of the maximum pedal, the pedal moves along the lower part of the trajectory, and this force is almost not used at the turn angle of 60-90°.

The same problems with existing valoprovoda. Effective footwork is only part of the volume pedal. I.e. both legs work effectively in the best case only 180-210° rotate the drive sprocket.

Another disadvantage of existing designs is the lack of main parts: sprockets and chains. Although their production has long been cultivated, replacing them with a more simple and cheap parts it seems appropriate.

The objectives of this invention are:

the increased efficiency of the drive by reducing wasteful energy consumption and more efficient use of muscular power of man;

improving manufacturability and reducing the cost of production of parts of the drive.

The tasks are solved by applying the lever actuator with reciprocating swinging movement of the cranks and cables gear and overrunning clutch with the pulley. The clutch and the pulley mounted on the driving wheel, next to the second pulley installed on the place of the removed asterisks.

Common features of the proposed drive is selected the closest analogue is the driving shaft with cranks and pedals, a driven shaft with overrunning clutch and a flexible transmission.

Distinctive features are: mounted on the shaft lever with two shoulders curved profiled ends, through which spanned the ends of the cables, the middle part which is wound and fixed to the pulleys, one of which is installed instead of the sprocket, and the second is associated with the sprocket wheel through additional overrunning clutch, and in the middle part of the two shoulders of the lever has a lever with an elastic thrust, the second end of which is geared for the frame.

Figure 1 schematically depicts the actuator is in one extreme position.

Figure 2 shows schematically the drive in another extreme position.

Figure 3 shows a section a-a (enlarged scale) at the end of the axis of the drive wheel with the pulleys.

Figure 4 shows the variant with the United ends of the slave branches cables and transfer them via a common block.

Two pedal crank 1 with pedals (on the recumbent pedal may be missing), two shoulders lever 2, the profiled ends 3 which are attached the wires 4, and the middle part of the rope attached to the pulleys 5 and 6 and placed in the grooves, at least one coil. In the middle is the second part of the lever 2 has a lever 7, for which the engagement spring 8, the other end of which is fixed on the frame.

Flexible transmission may consist of two cables, and to have one, if on the frame to install the unit through which to transfer secondary (driven) part of the rope.

The efficiency of the proposed actuator is facilitated by a number of design features.

Two shoulders lever set with an offset angle relative to the cranks. Angle α mutual placement of the lever 2 relative to the yoke 1 is chosen so that in one extreme position angle β between the leading branch of the cable 4 and the lever 2 was close to 180°. To the resultant force of these provisions was directed approximately in the direction of arrow "C", i.e. almost at right angles to the leading branches of the cable. This provides the best pickup or overcoming steep slopes or other difficult sections of road.

Structurally, the maximum angle of rotation of the lever 2 is selected about 120°but efficiently used in the angle will be in the range of 90-100°.

In the process, is a reciprocating swinging motion of the pedals, and difficult sections of the road or on the climbs can be used only partial rotation that happens by itself.

To the ends of the two shoulders of the lever attached to the ends of the cables, the middle part which is wound and fixed on at adnych pulleys.

One of the pulleys installed instead (in place) slave sprocket and the other through additional overrunning clutch connected with the sprocket wheel. It should be noted that in the hub of the leading wheel brake is removed (where it exists).

At the ends of the two shoulders of the lever is made a curved surface, ensuring elimination of unacceptable sagging cables. The surface through which spanned the leading end of the rope, made on the arc of a circle. The size is determined geometrically. The slave end of the rope thrown over a round surface, i.e. the item type plain washer, the diameter of which is also determined geometrically so that when the lever is to provide the minimum slack of the rope.

In the middle part of the two shoulders of the lever, an auxiliary lever, to which is attached an elastic rod (spring, harness, etc. attached to the second end of the frame. At the end of the rotation of levers and cranks will be stretched spring 8 acting as two stops. But its main purpose is energy storage, which will be used to accelerate the leg is raised.

The drive is manufactured and tested operation.

The drive for bicycles and velomobiles containing the drive shaft with cranks and pedals, a driven shaft with overrunning clutch in the driving wheel, and a flexible transmission, characterized in that pravomochnosti attached or on the control shaft has two shoulders lever, at the ends of which is made a curved surface through which spanned the ropes attached to the ends of the two shoulders of the lever, and the middle part of the rope is wound and fixed on two pulleys mounted on the driving wheel with the opportunity to interact with him through the overrunning clutch, and in the middle part of the two shoulders of the lever has a lever with an elastic thrust, for example a spring, the second end of which is geared for the frame.



 

Same patents:

The invention relates to control systems of dynamic objects that are controlled simultaneously by two operators using a control lever not connected mechanically, and allows operators tactile information about the mismatch control inputs from a control lever that enables each operator to determine when intervention of another operator in the control and, if necessary, to synchronize the control actions of the operators

FIELD: transport engineering; bicycles with crank-and-connecting rod transmission.

SUBSTANCE: proposed bicycle contains frame 1, driven sprocket 5, driven sprocket 2, chain, steering column 6 with handlebar. Reciprocating pedals are secured to levers to of driven sprocket 2 through rigid tie-rods 3. Devices to bring levers of driving sprocket 2 out of extreme point is hinge-secured on frame 1 and on rigid tie-rods 3. Frame 1 of bicycle provides distance of 10 cm between front and rear wheels in operating position of bicycle. Compactness of bicycle at shipment is provided by pressing of pedals to tie-rod 3.

EFFECT: use of rider weight as main moving force.

2 cl, 2 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to vehicles accumulating energy in flywheel. Proposed bicycle has drive connected with drive wheel 2 and with flywheel 8 with spring suspension 19 to press flywheel 8 to drive wheel 2. Drive wheel 2 is installed by flanges 6 on bearings 7 of frame 1, and flywheel 8 is installed on two-arm pendulum 10 inside drive wheel 2 for pressing flywheel 8 to inner surface of rim 3 of wheel 2.

EFFECT: provision of transmission of storage energy from flywheel to drive wheel periodically through short lapses of time.

13 cl, 7 dwg

The invention relates to machine building, transport, in particular to velotron

Bike // 2223886
The invention relates to two-wheeled bicycles with electric transmission and flywheel, which can be used to stabilize the bike

The invention relates to the production of sports and recreational equipment and can be used to create new models of machines and equipment-analogues: bicycles, scooters, roller skates, skis, snowmobiles, sledges, skates, ice-boats, rowing boats, canoes, Canoeing

Smartroller // 2088460
The invention relates to subjects that meet vital human needs, and can be used as sports equipment for the development of motor coordination, reaction, muscle legs and back, mainly in children and young people, as a means of entertainment for adults and children in places of organized recreation (in sanatoriums, tourist centers, parks, culture and sports equipment and means of transportation for people with disabilities with different lesions of the musculoskeletal system, but for cases where the disabled person can perform squats

FIELD: transport engineering; bicycles with crank-and-connecting rod transmission.

SUBSTANCE: proposed bicycle contains frame 1, driven sprocket 5, driven sprocket 2, chain, steering column 6 with handlebar. Reciprocating pedals are secured to levers to of driven sprocket 2 through rigid tie-rods 3. Devices to bring levers of driving sprocket 2 out of extreme point is hinge-secured on frame 1 and on rigid tie-rods 3. Frame 1 of bicycle provides distance of 10 cm between front and rear wheels in operating position of bicycle. Compactness of bicycle at shipment is provided by pressing of pedals to tie-rod 3.

EFFECT: use of rider weight as main moving force.

2 cl, 2 dwg

Vehicle // 2283243

FIELD: transport engineering; entertainments.

SUBSTANCE: proposed vehicle contains traction motor 47 and stepless gearbox - variable-speed drive. Used as variable-speed drive can be amplifier consisting of power differential 1, comparing differential 30, regulating differential 2, control differential 36 and two-self-braking mechanisms 3, 4. Input of power differential is connected with traction motor and input of regulating differential, central gears 17, 18 of power differential are connected with driven links 15, 16 of self-braking mechanism and with central gears 32, 33 of comparing differential to provided rotation of central gears of comparing differential in opposite directions. Driving links 13, 14 of self-braking mechanisms are connected with central gears 19, 20 of regulating differential and central gears 42, 43 of control differential to provide rotation of central gears of control differential in opposite directions, and change of gear ratio is carried out by means of bicycle-type pedal unit 46 mechanically coupled with control differential with possibility of changing speed of rotation of its central gears. Central of regulating differential are closed by speed equalizer 41.

EFFECT: provision of vehicle with ratio change and reversing by means of bicycle-type pedal drive.

2 cl, 1 dwg

Pedal drive // 2274576

FIELD: muscular drives; roller skates.

SUBSTANCE: invention relates to lever drive of roller skates. Hinge joint 4 of pedal 1 is arranged in middle part of pedal. Pedal 1 is connected with one of flexible member 12 secured by ends on sheaves 13,14 of mechanism with flexible coupling and passed over sheaves 13,14 of said mechanism from two sides. Flexible material tapes of cables are used as flexible members. One of sheaves 14 is connected with drive gear 15 of toothed mechanism.

EFFECT: possibility of use of smaller diameter sheave as compared with diameter of standard toothed gear, increased transmission gear ratio and speed of running.

16 cl, 4 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to foot drive of electric transmission. Proposed small-size vehicle for individual use has base 1 with two driving wheels 3 connected through belts 29 of variable-speed drive with two electric motors 27 supplied by battery 8 and/or generators 11 with possibility of recuperation. Base 1 is hinge-connected with one- or two-axle bogie 4 with two generators 11. Generator armatures are rotated by pedals 14 provided with spiral rods 17 with pull-back springs 17 or equipped with levers and gears for rotating the armature.

EFFECT: increased distance covered without charging.

12 cl, 5 dwg

FIELD: transport engineering; bicycles.

SUBSTANCE: invention relates to brake control drive with reciprocating levers. Levers 1, 2 are provided with two overrunning clutches mounted o one axle with sprocket 4 coupled by first flexible transmission 5 with drive sprocket 6. Levers 2, 2 are interconnected by second flexible transmission with disk 9 on axle 10. Said levers, being bell cranks, are additionally interconnected by third flexible transmission 14 with disk 15 fitted on axle 10 to provide transmission of forces applied to toe-clips from pedal to pedal. Axle 10 can be made either fixed or provided with joint 11 and coupling with brake 13 set into operation when forces are applied to both levers 1, 2.

EFFECT: accelerated transfer of force from pedal to pedal.

3 cl, 1 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to drives with reciprocating levers. Driving rocker 2 and driven rocker 4 are connected by connecting rod 3. Pedals are secured on driving rockers 2, and tie-rods are connected to driven rockers 4 for coupling them with freewheeling mechanisms 6. Driven rockers 4 can be suspended from slider 10, rocker or eccentric to change ratio of drive in motion.

EFFECT: enlarged ratio change range in drives with reciprocating levers.

6 cl, 13 dwg

Tandem // 2247051

FIELD: transport engineering; three-wheel tandem.

SUBSTANCE: invention relates to three-wheel tandem part of which is made in form of sedicar. Driven bicycle without front wheel is attached to side of driving bicycle. Reciprocating drive of driving bicycle in form of levers with drum is furnished additionally with shaft connected with axle of levers of driven bicycle to form common power system.

EFFECT: improved efficiency of tandem drive.

5 dwg

The invention relates to the field of transport

The invention relates to land vehicles

The invention relates to land vehicles

Tandem // 2247051

FIELD: transport engineering; three-wheel tandem.

SUBSTANCE: invention relates to three-wheel tandem part of which is made in form of sedicar. Driven bicycle without front wheel is attached to side of driving bicycle. Reciprocating drive of driving bicycle in form of levers with drum is furnished additionally with shaft connected with axle of levers of driven bicycle to form common power system.

EFFECT: improved efficiency of tandem drive.

5 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to drives with reciprocating levers. Driving rocker 2 and driven rocker 4 are connected by connecting rod 3. Pedals are secured on driving rockers 2, and tie-rods are connected to driven rockers 4 for coupling them with freewheeling mechanisms 6. Driven rockers 4 can be suspended from slider 10, rocker or eccentric to change ratio of drive in motion.

EFFECT: enlarged ratio change range in drives with reciprocating levers.

6 cl, 13 dwg

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