Stair steppers

Abstract

The present disclosure relates to a stair steppers, comprising a base, a bracket and a motion mechanism, the base supports the bracket, and the motion mechanism is disposed on the bracket, the bracket comprises a main body fixed to the base and a guide rail hinged to the main body, the guide rail is disposed to be inclined to the base, the motion mechanism comprises pedal links, pedals and pedal cranks, the pedal is disposed on the pedal link, the pedal link is hinged to the pedal crank, the pedal cranks are further hinged to the main body of the bracket, a hinge point of the pedal crank and the pedal link is disposed to be spaced apart from a hinge point of the pedal crank and the main body, the pedal link is provided with an abutting portion which abuts against the guide rail and is reciprocatingly movable along the guide rail. Since the guide rail is hinged to the main body, it is feasible to adjust an inclination angle of the guide rail relative to the base so as to change a movement trajectory of the pedal links and thereby adjust the difficulty of exercise of the stair steppers. When an angle between the guide rail and the base is larger, the difficulty of exercise is higher, otherwise, the difficulty of exercise is lower.

What is claimed is: 
     
         1 . A stair steppers, characterized in that the stair steppers comprises a base, a bracket and a motion mechanism, the base supporting the bracket, and the motion mechanism being disposed on the bracket, the bracket comprising a main body fixed to the base and a guide rail hinged to the main body, the guide rail being disposed to be inclined to the base, the motion mechanism comprising pedal links, pedals and pedal cranks, the pedal being disposed to the pedal link, the pedal link being hinged to the pedal crank, the pedal crank being further hinged to the main body of the bracket, a hinge point between the pedal crank and the pedal link being disposed to be spaced apart from a hinge point between the pedal crank and the main body, the pedal link being provided with an abutting portion which abuts against the guide rail and being reciprocatingly movable along the guide rail. 
     
     
         2 . The stair steppers according to  claim 1 , characterized in that the bracket further comprises a telescopic member, one end of the guide rail being hinged to the main body, the other end being hinged to an end of the telescopic member, and the telescopic member being extended and retracted to push the guide rail to rotate, thereby adjusting the inclination angle of the guide rail. 
     
     
         3 . The stair steppers according to  claim 2 , characterized in that the bracket further comprises a driving member, the telescopic member comprising two portions which are telescopic to each other, the driving member being connected to one portion of the telescopic member, and the guide rail being connected to the other portion of the telescopic member. 
     
     
         4 . The stair steppers according to  claim 1 , characterized in that the main body of the bracket comprises two support arms fixed to the base, one end of the guide rail being hinged to one of the support arms, and the two support arms and the base jointly forming a triangular support seat to support the guide rail. 
     
     
         5 . The stair steppers according to  claim 1 , characterized in that the motion mechanism further comprises rotary discs connected to the pedal cranks, and the rotary disc being rotatable along with the pedal crank; the motion mechanism further comprises a driving disc rotatable along with the rotary discs and a fan resistance disc transmissively connected to the driving disc, and the driving disc is driven by the rotary discs to rotate. 
     
     
         6 . The stair steppers according to  claim 5 , characterized in that the motion mechanism further comprises a belt, and the driving disc and the fan resistance disc being transmissively connected through the belt; the motion mechanism further comprises a snub pulley whose one end is secured to the bracket and the other end abuts against the belt such that the belt is tensioned. 
     
     
         7 . The stair steppers according to  claim 5 , characterized in that the motion mechanism further comprises a magnetoresistance mechanism which is disposed at the rotary discs, the fan resistance disc or the driving disc to generate a resistance to rotation of the rotary discs, the fan resistance disc or the driving disc. 
     
     
         8 . The stair steppers according to  claim 7 , characterized in that the magnetoresistance mechanism comprises a magnetic member, a magnetic force being generated between the magnetic member and the rotary disc, the fan resistance disc or the driving disc, and a distance of the magnet member relative to the rotary discs, the fan resistance disc or the driving disc being adjustable. 
     
     
         9 . The stair steppers according to  claim 5 , characterized in that the stair steppers further comprises a generator device and an electronic device, the generator device being mounted to the rotary discs, the fan resistance disc or the driving disc and generating electricity upon rotation of the rotary discs, the fan resistance disc or the driving disc, and the generator device being electrically connected to the electronic device to power the electronic device. 
     
     
         10 . The stair steppers according to  claim 5 , characterized in that the motion mechanism further comprises handle links, handle cranks, a rotation shaft and handles, the handle link being connected to the rotary disc and rotatable along with the rotary disc, the handle crank being hinged to the handle link and connected to the rotation shaft, the rotation shaft being rotatably connected to the main body of the bracket, and the handles being secured to the rotation shaft and rotatable along with the rotation shaft.