Patent ID: 8328692
Filing Date: 2012-12-11
Classification: A63B

Abstract:
1. A self-generating resistance apparatus for fitness and rehabilitation equipments, comprising: a bracket, formed by assembling an internal plate and an external plate, and having an upper end with a shaft hole formed thereon and a lower end fixed to a frame of a fitness equipment or a rehabilitation equipment; a flywheel, being a rotating means for providing inertia, and having an external ring and a hub, and a ring groove being formed at an external edge of the external ring; a rotating axle, passed into a hub of the flywheel, and having a bearing and a bearing seat installed on the rotating axle, and the rotating axle being installed into the shaft hole of the bracket, and an end of the rotating axle having a driven wheel driven by a driving wheel of the fitness equipment or the rehabilitation equipments for driving the rotating axle and the flywheel to rotate; a power generator, installed outside the flywheel, and having a shaft and a power generator, and the power generator further having a pulley fixed to an external side of the power generator, and both ends of the shaft being secured onto the internal and external plates of the bracket respectively; and a belt, mounted onto the ring groove of the flywheel and the pulley of the power generator, such that the flywheel can drive the power generator to rotate and generate an electric current; thereby, a user of the fitness equipment or the rehabilitation equipment can step on the equipment, and the kinetic energy is transmitted from the flywheel to the power generator, and the external ring of the flywheel has a diameter much greater than the diameter of the pulley of the power generator, such that when the flywheel rotates, a large speed ratio between the power generator and the flywheel is formed, and the electric current generated by the power generator is increased correspondingly; a resistance mechanism, including a braking iron core and a solenoid, and the braking iron core having an E-shaped containing portion concavely formed on an internal surface of the braking iron core and provided for installing the solenoid, and the resistance mechanism being installed at the periphery of the flywheel, and the electric current generated by the power generator being supplied to the solenoid, the braking iron core and the flywheel to produce a closed magnetic circuit, so as to produce a reverse resistance to the rotating flywheel.