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Magnetic adjustable loading device with eddy current

  • US 5,711,404 A
  • Filed: 02/05/1997
  • Issued: 01/27/1998
  • Est. Priority Date: 02/05/1997
  • Status: Expired due to Term
First Claim
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1. A magnetic adjustable loading device with eddy current comprising:

  • a flywheel having a bearing disposed therein, a transmission element being disposed at outer side;

    a metal conductor being disposed at an inner rim of said flywheel;

    a shaft being provided for mounting said bearing of said flywheel and said transmission element thereof, both end of said shaft being provided with threaded portions;

    a stator disk being provided and disposed at inner side of said flywheel, said stator disk being locked to said shaft by a flush-head bolt disposed at central portion;

    a stator being installed to said stator disk;

    a cover lid being locked to said stator disk to enclose said stator therein, an adjusting means and a braking means being also provided;

    characterized in that said stator is configured by a pair of opposite circular magnetic plates made from magnetic material, an outer rim portion being provided with a permanent magnet, a top portion of said circular plate being pivotally mounted to said stator disk, a bottom end of said circular plate being free to move, the inner rim portion of said circular plate facing toward the central portion of said stator disk being disposed with a biasing spring;

    said adjusting means comprising an adjusting element which is provided with projected pin at both ends, said projected pin being movably received within the grooves of said stator disk and said cover lid such that said projected pins can move up and down within said grooves, said projected pin being further connected to the bottom portion of said stator with a cable, said cable being further guided by a pair of guiding posts disposed at sides of said grooves;

    said braking means being connected to a controller on a sporting equipment by a cable, said cable being installed to said cover lid by means of an eyelet, said cover lid being provided with a transfer idle cam which is connected to said adjusting element of said adjusting means;

    by the provision of those above described elements, the level of said adjusting element can be readily adjusted by said braking means, consequently, an air gap between said stator and said metal conductor of said flywheel is varied and the magnetic flux density is also changed, as a result, the resistance can be readily changed and adjusted in a stepless manner.

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