| 摘要 |
A foot-operated drive which does not rotate in circles like customary pedal drives but is rather adapted to the anatomy of the legs is characterised in that it converts, perpendicularly and in the direction of the force, the linear movement into rotating movement via two corner gears, the chains being provided with symmetrically arranged pedals and sliding over an asymmetrical work path provided by means of a suitable chain guide, and the two dead-centre points in the working range of the legs being thus avoided. It is also important that the chain transmits the force generated via the foot-operated drive to the wheel pinion via corner gears or deflexion gears. Both chain systems leading via a frame which is adjustable in height <<h>>, in length <<L>> and by the angle << alpha >> and being capable of being fastened in the desired position via a clamping device. The deflexion gears which serve to tension the chain and are fixed after installation. The upper corner gears are force-transmitting and the lower corner gears rotate loosely with them. Both chain systems are guided via the corner gears and their course is thus flush. They are matched to the sizes of the corner gears of the chain guide and to the requirement of the driver. <IMAGE>
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