Incline angle adjustable stair climbing machine

摘要

An incline angle adjustable stair climbing machine includes a base frame, a tilting seat pivotally mounted at the base frame, a tilting seat adjuster for adjusting an incline angle of the tilting seat relative to the base frame, a staircase mounted at the tilting seat and including a plurality of tread boards biasable relative to the tilting seat, and a tread board adjuster mounted at the tilting seat for adjusting a biasing angle of the tilting seat to maintain the plurality of tread boards constantly horizontal for enabling a user to conduct stair-climbing exercises at different climb gradients while maintaining good posture.

主权项

1. An incline angle adjustable stair climbing machine, comprising:
a base frame; a tilting seat pivotally mounted at said base frame; a tilting seat adjuster mounted between said base frame and said tilting seat and adapted for adjusting an incline angle of said tilting seat; a staircase mounted at said tilting seat, said staircase comprising a plurality of tread boards biasable relative to said tilting seat; and a tread board adjuster mounted at said tilting seat and connected with said plurality of tread boards of said staircase and adapted for adjusting an angle of each said tread board relative to said tilting seat to keep each said tread board constantly horizontal; wherein said staircase further comprises a tread board adjustment frame vertically movably mounted at said tilting seat and connected with each said tread board; said tread board adjuster is mounted between said tilting seat and said tread board adjustment frame; wherein said tread board adjuster comprises a tread board adjuster motor, a tread board adjuster screw rod, a tread board adjuster sleeve, an interlocking seat and two opposing linkages, said tread board adjuster motor being mounted at said tilting seat, said tread board adjuster screw rod having a front end thereof connected to said tread board adjuster motor, said tread board adjuster sleeve being threaded onto said tread board adjuster screw rod, said interlocking seat being connected to said tread board adjuster sleeve, said two linkages being respectively mounted at two opposite ends of said interlocking seat and connected with said tread board adjustment frame.