BICYCLE MOUNTING SPRING USED AS AUXILIARY POWER UNIT

摘要

PURPOSE: A bicycle having a spring as an auxiliary power unit is provided to improve performance in starting, accelerating and driving by reusing with storing kinetic energy of rotation into elastic energy, and to reduce energy loss by simplifying the spring unit. CONSTITUTION: A brake wheel disk(260) is rotated around a spring hub(300) assembled with a rear wheel hub(210) by friction force in contacting to a clutch disk(320). Elastic energy is stored by winding a band spring(310) placed in a spring frame. The storage state of elastic energy is displayed by an indicator of a spring meter, and adjusted optimally by a passenger. A stopper is separated from a toothed groove by operating an accelerating lever, and the spring hub is unwound with repulsive force of elastic energy. Power is transmitted to the rear wheel hub through a bearing.