Angle adjusting device for the wind-resisting plates of the resisting wheel of a stationary bike

An angle-adjusting device for the wind-resisting plates of the resisting wheel of a stationary bike, said angle-adjusting device comprising:

• a pushing unit fitted on the shaft of a resisting wheel, said pushing unit driven by an outside adjusting button to rotate and shift axially along said shaft of said resisting wheel;
• a coupled rotary sleeve fitted in said pushing unit, said coupled rotary sleeve actuated by said pushing unit to shift forward, said coupled rotary sleeve having its interior installed with a bearing and its thick wall bored with two axial insert holes, said two axial insert holes respectively inserted by two limiting rods of a drum wheel for restricting said coupled rotary sleeve only to shift axially, said coupled rotary sleeve having its hollow inner wall fixed diametrically with an offset-angled projecting member;
• a main gear unit positioned beside said pushing unit and said coupled rotary sleeve and abutting the center of said resisting wheel, said main gear unit formed with a sleeve having one end inserted in said coupled rotary sleeve, said sleeve of said main gear unit having its outer wall bored with an oblique recess for said offset-angled projecting member to engage with, said sleeve pushed by said coupled rotary sleeve to turn obliquely when said coupled rotary sleeve is moved axially, said sleeve fixed with a main bevel gear at the end abutting the center of said resisting wheel;
• and
• A plurality of wind-resisting plates arranged radially and pivotally assembled on the surface of said resisting wheel, each said wind-resisting plate having its driven shaft fixed with an auxiliary bevel gear engaged with said main bevel gear of said sleeve, said main bevel gear of said sleeve rotated for an angle to drive said auxiliary bevel gear and said wind-resisting plates to turn together and adjust the angles of the wind resisting sides of said wind-resisting plates.