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

Abstract

An angle-adjusting device for the wind-resisting plates of the resisting wheel of a stationary bike includes an adjusting button for actuating a pushing unit on the shaft of a resisting wheel to rotate. A coupled rotary sleeve fitted in the pushing unit and restricted to shift axially has its inner wall fixed with an offset-angled projecting member. A main gear unit fitted on the shaft by a bearing has a sleeve having one end inserted in the coupled rotary sleeve and bored with an oblique recess for the offset-angled projecting member to engage with and a main bevel gear having its toothed side facing the resisting wheel. The wind-resisting plates have their shafts respectively provided with an auxiliary bevel gear engaged with the main bevel gear. The angles of the wind-resisting plates can be adjusted by pulling the adjusting button.

1 . 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.    
   
   
       2 . The angle-adjusting device for the wind-resisting plates of the resisting wheel of a stationary bike as claimed in  claim 1 , wherein said pushing unit is composed of an outer pushing wheel and an inner pushing wheel fitted in said outer pushing wheel, said outer pushing wheel having its inner wall fixed with a coupled guide wheel, said inner pushing wheel having its outer wall cut with an axial engage recess for said coupled guide wheel to engage with to enable said two pushing wheels to rotate together, said inner pushing wheel having its inner wall formed with a conical projection extending toward said shaft of said resisting wheel, said shaft of said resisting wheel having a portion formed with threaded recesses for said conical projection of said inner pushing wheel to engage with, said pushing unit driven to rotate and shift axially along said shaft of said resisting wheel.  
   
   
       3 . The angle-adjusting device for the wind-resisting plates of the resisting wheel of a stationary bike as claimed in  claim 1 , wherein said adjusting button is connected with a pulley by a steel wire, said pulley connected with the pulley on the outer end of said outer pushing wheel by a synchronous pulley, said adjusting button pulled to drive said pushing unit to rotate.  
   
   
       4 . The angle-adjusting device for the wind-resisting plates of the resisting wheel of a stationary bike as claimed in  claim 1 , wherein said drum wheel is fixedly positioned at the outer side of the center of said resisting wheel and provided with said two limiting rods respectively inserted in said two axial insert holes of said coupled rotary sleeve for restricting said coupled rotary sleeve only to shift axially.