DE19525766A1 - Bicycle or tricycle with pulse drive system - Google Patents

Abstract

The bicycle has a frame in two parts (7,18) turning independently round an axis (CC). This axis is inclined at an acute angle ( delta ) to the ground surface (20) (29-65 degrees). The angle ( beta ) between the hand lever (9) and the front frame part (7) is 30-140 degrees. The angle ( alpha ) between the front and rear parts of the frame is 60-200 degrees. The motion paths (a...a') of the pedal axles (3,3') are symmetrically below the axle (2) of the front wheel (1), which is also the drive wheel and steered wheel. They are along the axis (CC). The drive lever also forms the drive force adding mechanism through its connection with the front frame part via a spring tension device.

Description

The invention relates to a driving bike or tricycle with an impulsive drive system stem according to the preamble of the patent saying 1.

Different proposals are known been a lot to the muscles of a cyclist to drive a bicycle or the like use, in order to also increase the drive power optimize.

So it is with the generic state of the Technology known from DE-OS 24 36 774 that the driver's seat at the driver's pelvis height Back support to absorb the drive pressure of the legs, the drive movement the leg-operated hand lever via a freewheel lock on the rear wheel axle and the drive movement of the arm-operated hand lever over a other freewheel lock on the front wheel axle are transferable, the pivot axis of the arm-operated hand lever on both sides as to his Longitudinally rotatable handlebar for len ken of the front wheel is formed. The disadvantage of this land vehicle is that the Len kung does not depend linearly on driving forces that be used on the hand lever.

The specified in claim 1 He The problem is based on a new one To develop a bicycle or tricycle in which the Drive movement has no effect on the len kung has.

This problem is solved by the features listed in patent claim 1 .

The advantages achieved with the invention be stand in particular in that the size and Weight of the frame decreases, and the one construction of the hand lever with two degrees of freedom and the choice of the optimal angle of its range let the impact of driving forces on the Eliminate steering completely. You can also by changing the angles α and δ bicycles or tricycles for various purposes eren (sports bike, everyday bike, transport bike, recumbent bike and folding bike).

After a further design of the Er You can find the hand lever and the one with it kinematically coupled pedals with the front part of the frame by means of a spring connect clamping unit, e.g. B. Pressure (stretch) spiral springs or torsion springs. The resulting one Mechanism of the summation of the driving forces leaves the energy in the springs when moving the hand lever forward and at the same time movement of the pedals with foot hooks accumulate behind, and with the return movement the hand lever and the pedals in one impulse  Exertion of almost all muscles of the body Cyclists add up and without derailleur gears system with a larger ergonomic Renta drive bility. It is also possible through the Movement of the hand lever forward when Brakes the kinetic energy of the cyclist the potential energy of the spring tensioner kes to transform (claim 2).

The invention is accordingly in se hen that on the bike or tricycle Front wheel driving and steering force at the same time effects, the mutual effect of which is minimal, because all impulsive vibration influences on the Drive mechanism over arms, legs and Fuselage symmetrical to the articulated (rotary) axis of the Work along the frame, and all steering movements achievements occur perpendicularly in the area to this axis. This means that the vector of the Sum of the driving forces always the right win kel to the vector of the sum of the steering forces. The kink (rotation) axis is by moving to Soil surface tends strongly in its function equal to the steering axis of a conventional driving rades.

The biomechanics of this drive and len movement is fundamentally different from all known methods of drive and the steering of the bike. The difference be rests in the fact that the drive and steering mecha nism forms a kinematic scheme, which in to some extent the biomechanical scheme closely mimicking the body of the cyclist: At ne - hip joints - pelvis - trunk. The agreement The above schemes are in tune necessary and sufficient condition for that most effective realization of the advantages of the impulsive Vibration drive compared to the usual Pedal drive.

In the drawings, the

Fig. 1 is a side view schematically depicting a foil with lung model of exporting approximately example (middle position),

Fig. 2 is a side view schematically depicting a foil with lung model of exporting approximately example (front dead center),

Fig. 3 is a side view schematically depicting a foil with lung model of exporting approximately example (rear dead center)
show, the reference numerals 1 mean the front wheel, 2 the front wheel axle, 3 and 3 'the Pedalach sen, 4 and 4 ' the kinematic coupling with the hand lever ( 9 ), 5 and 5 'the rotatable pedals, 6 and 6 ' the foot hook , 7 the front frame part, 8 the rotatable hand lever axis, 9 the hand lever, 10 and 10 'the handles, 11 the film model of the cyclist, 12 the backrest, 13 the guide of the driver's seat, 14 the adjustable driver's seat, 15 the rotating swivel mechanism, 16 the Geometric center of the swivel mechanism, 17 the rear wheel, 18 the rear frame part, 19 the rear wheel, 20 the floor surface, 21 the center of the wheel contact area, 22 the intersection of the (extended) articulated (rotary) axis (CC) with the Roadway. The rotation path of the front wheel is designated by b. With c. . . c 'is the path of movement of the handles. With a. . . a 'is the path of movement of the pedal axles. With α the angle between the front and the rear parts of the frame is designated. With δ the angle between the articulation (rotation) axis (CC) and the floor surface is denoted. With δ the angle between the hand lever's and the straight line of the front frame part is designated. F _A denotes the driving force. F _{Pmax denotes} the maximum counteracting force of the spring _{tensioning mechanism} . F _Pmin is the minimum counteraction force of the spring tension _mechanism . CC is the articulated (rotating) axis of the frame.

Reference list

1 the front wheel
2 the front wheel axle
3 and 3 'the pedal axles
4 and 4 'the kinematic coupling with the hand lever ( 9 )
5 and 5 'the rotatable pedals
6 and 6 'the foot hook
7 the front frame part
8 the rotatable hand lever axis
9 the hand lever
10 and 10 'the handles
11 the foil model of the cyclist
12 the back support
13 the leadership of the driver's seat
14 the adjustable driver's seat
15 the rotating swivel mechanism
16 the geometric center of the swivel mechanism
17 the rear wheel
18 the rear frame part
19 the rear wheel axle
20 the floor surface
21 the center of the wheel contact patch
22 the intersection of the (extended) articulated (rotary) axis (CC) with the road
b the rotation of the front wheel
c. . . c 'the path of movement of the handles
a. . . a ′ the path of movement of the pedal axles
α the angle between the front and rear parts of the frame
δ the angle between the articulation (rotation) axis (CC) and the ground surface
β the angle between the hand lever and the straight line of the front frame part
F _A the driving force
F _{Pmax is} the maximum counteracting force of the spring _{tensioning mechanism}
F _{Pmin is} the minimum counteracting force of the spring _{tensioning mechanism}
CC the articulated (rotating) axis of the frame

Claims (2)

1. Bicycle or tricycle with an impulsive drive system, the frame of which consists of two parts connected by means of the swivel mechanism and on the front part of which on the axis that is parallel to the axis of rotation of the front wheel, a hand lever with two handles and a kinematic ver Binding with two symmetrical pedals with foot hooks are attached, with an adjustable driver's seat, which is attached in the fixed guide of the rear frame part and which has a back support at the pelvic height of the cyclist to absorb the drive pressure of the legs, the back and forth movement the hand lever and the pedal by means of any freewheel mechanism must be converted into the same rotational movement of the drive wheel, which is also the steering wheel and whose rotation takes place together with the front part of the frame and the hand lever, characterized in that
that in the initial position of the front ( 7 ) and rear ( 18 ) part of the frame, the angle (α) between the geometric center of the axis of rotation ( 2 ) of the front wheel ( 1 ), the geometric center ( 16 ) of the swivel mechanism ( 15 ) and the geometric center of the axis of rotation ( 19 ) of the rear wheel ( 17 ) (the rear wheels) is between 60 ° and 200 °,
that the articulated (rotary) axis (CC) of the frame parallel to the guide ( 13 ) of the driver's seat ( 14 ) with rear support ( 12 ), through the geometric center ( 16 ) of the swivel mechanism ( 15 ) below the axis of rotation ( 2 ) of the front wheel ( 1 ) and the kink (rotation) axis hits the floor surface ( 20 ) at point ( 22 ) in front of the center of the wheel contact area ( 21 ) and the angle (&) between the kink (rotation) axis (CC) and the floor surface ( 20 ) is between 29 ° and 65 °,
that in the work fluctuations (F _A ) of the hand lever ( 9 ) the angle (β) between the geometric center ( 16 ) of the swivel mechanism ( 15 ), the geometric center of the axis of rotation ( 8 ) of the hand lever ( 9 ) and the center of the section the handle end ( 10 and 10 ') connects and changes from 30 ° to 140 ° and the trajectories (a... a') of the pedal axles ( 3 and 3 ') symmetrically below the axis of rotation ( 2 ) of the front wheel ( 1 ) and the kink (rotation) axis (CC) of the frame are arranged along ( Fig. 1). 2. Bicycle or tricycle with an impulsive drive system according to claim 1, characterized in that the hand lever ( 9 ) and the kine matically coupled with it ( 4 and 4 ') pedals ( 5 and 5 ') additionally with the front ( 7th ) Part of the frame are connected by means of the spring tensioner, which against the movement of the hand lever ( 9 ) to the front (c '... C) and with the simultaneous movement of the pedals ( 5 and 5 ') with the foot hooks ( 6 and 6 ' ) to the rear (a ... a ') is directed ( Fig. 1, Fig. 2 and Fig. 3).