Patent ID: 6162152
Filing Date: 2000-12-19
Classification: A63B,Y10S

Abstract:
A resistance control device for a training appliance comprising;a resist wheel fixed on a frame of a training appliance body, able to be rotated, having the wheel body with a magnetic property and a spherical surface with non-magnetic property;a fix base fixed with said training appliance below said resist wheel, distanced properly from said spherical surface of said resist wheel;a magnet base provided to be located between said spherical surface of said resist wheel and said fix base, having a first end pivotally connected to said fix base, a second end being free to move up and down below said spherical surface of said resist wheel, a plurality of magnets arranged in a row on said magnet base facing said spherical surface;characterized by said free end of said magnet base having a lateral rod, an eccentric block located beside said lateral rod and having a center shaft hole for a a shaft fixed firmly therein, said shaft driven to rotate by a drive source, said eccentric block having a curved long slot for said lateral rod to fit in and move along therein, the distance between every point of said slot and said center shaft hole decided by a calculation formula;said eccentric block rotated to move said lateral rod along said slot to rise or lower to alter the distance between the magnets of said magnet base and said resist wheel so as to control resistance of said resist wheel against said magnets, facilitating assemblage of said resistance control device and lower its cost, and resistance adjusting being precise because of the distance between every point of said slot and said center shaft hole being decided by calculation formula.