| CPC H02K 49/043 (2013.01) [A63B 21/0051 (2013.01); A63B 21/225 (2013.01); H02K 7/02 (2013.01); H02K 11/22 (2016.01)] | 2 Claims |
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1. An eddy current type resistance device comprising:
a ring-shaped flywheel, having an interior space and a side surface part on a first side of the ring-shaped flywheel and forming a closure for one side of the interior space;
a shaft, coupled to the side surface part of the ring-shaped flywheel by a first bearing, the shaft has an axial blind hole at an end thereof that is away from the side surface part, the shaft has a radial blind hole inside the interior space of the ring-shaped flywheel that is in open communication with the axial blind hole, wherein the shaft is coupled to a driving wheel through a second bearing, and between the driving wheel and the ring-shaped flywheel there is disposed a one-way bearing and a third bearing;
a positioning frame, connected to the shaft and disposed inside the interior space of the ring-shaped flywheel;
a speed sensing unit disposed within the interior space of the ring-shaped flywheel, the sensing unit including a rotation speed sticker mounted on an interior side of the side surface part and a light sensor mounted on the positioning frame;
multiple magnetic field generating components, evenly arranged on the positioning frame to be close to an inner periphery of the ring-shaped flywheel, and the magnetic field generating components have signal wires that pass through the radial blind hole and the axial blind hole of the shaft to exit an outer end of the shaft; and
a side cover, coupled to a second opposing side of the ring-shaped flywheel and forming a closure of a corresponding side of the interior space, the side cover being coupled to the shaft by a fourth bearing.
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