Patent ID: 8932185
Filing Date: 2015-01-13
Classification: H02K

Abstract:
1. A brake device with built-in power generation mechanism and permanent magnetism eddy current applying to fitness equipment comprises: a fixed shaft having a fixed segment at both ends for fixing on a support base of athletic equipment; a driven wheel pivotally connected to the fixed shaft to transmit an external power; an external rotator including a flywheel and a permanent magnet fixed at an inner periphery of the flywheel, the permanent magnet provided for an electric power generation and an eddy current brake, the flywheel pivotally connected to the fixed shaft and unidirectionally rotated on the driven wheel; a cooling fan mounted on the flywheel and simultaneously rotated with the flywheel to produce a cooling effect; an internal stator including a fixing bracket joining the fixed shaft and a tile-shaped armature mounted at an outer periphery of the fixing bracket, an outer periphery of the tile-shaped armature being adjacent to an inner periphery of the permanent magnet, and a rotation of the external rotator allowing the tile-shaped armature to generate a three-phase alternating current being output by an output line connected to the tile-shaped armature; a brake mechanism including two pieces of magnetic-conductive plate and two pieces of arc-shaped metal plate, each of the two pieces of magnetic-conductive plate having an adjusted end and symmetrically mounted on a left and right side of the fixing bracket, each of the two pieces of arc-shaped metal plate mounted at an outer periphery of the magnetic-conductive plate, a gap being between the arc-shaped metal plate and the permanent magnet, and the rotation of the external rotator allowing the arc-shaped metal plate to generate eddy current and braking torque of magnetic resistant; an adjustment mechanism including a lever, a left connecting rod, a right connecting rod, a torsion spring, a pull rope holder, and a pull rope, the lever pivotally connected to the fixing bracket by a central shaft, an end of the left connecting rod and the right connecting rod pivotally connected to the adjusted end of the magnetic-conductive plate, and another end thereof pivotally connected to lever, the pull rope holder fixed on the fixing bracket, an end of the pull rope conned to the lever, and another end thereof passing through the pull rope holder and connected to the server, the torsion spring mounted on the central shaft and having both ends respectively connected to the left connecting rod and the right connecting rod, and the server pulling and loosening the pull rope to adjust the gap between the arc-shaped metal plate and the permanent magnet; and a controller electrically connected to the output line of the tile-shaped armature, a control panel, and a server connected to the adjustment mechanism, control panel provided for an user to input a set value and a control value being produced and sent to the server to adjust a braking resistance based on the set value, the controller then transferring the three-phase alternating current from the output line of the tile-shaped armature into direct current for a required power of the control panel and the server.