Resistance-adjustable stationary bicycle

Abstract

Disclosed is a resistance-adjustable stationary bicycle. First, an adjustment motor is arranged and is connected to a magnetic damping washer though an adjustment steel rope, so that an electrical-control resistance adjustment system is established; and second, an adjustment knob is arranged, and the rotation angle and rotation direction of the adjustment knob can be read to adaptively drive the adjustment motor to wind or unwind the adjustment steel rope to adjust the distance between the magnetic damping washer and a flywheel, so as to realize resistance adjustment. The adjustment knob is easy and convenient to operate and high in adjustment precision, users can adjust the resistance in real time to a value meeting the current requirements when using the stationary bicycle, and the problem of inconvenient adjustment of the resistance of existing stationary bicycles is solved.

What is claimed is: 
     
         1 . A resistance-adjustable stationary bicycle, comprising a frame, wherein a magnetic damping washer and a flywheel are arranged on the frame, a permanent magnet layer is arranged on a peripheral wall of the flywheel, and the magnetic damping washer is movably arranged close to a periphery of the flywheel;
 a controller, an adjustment motor, and an adjustment knob are further arranged on the frame, the controller is electrically connected with the adjustment motor and the adjustment knob, and the adjustment motor is connected to the magnetic damping washer through an adjustment steel rope; the controller reads the amount of rotation of the adjustment knob to control the adjustment motor to wind or unwind the adjustment steel rope to control a distance between the magnetic damping washer and the flywheel, so as to realize resistance adjustment.   
     
     
         2 . The resistance-adjustable stationary bicycle according to  claim 1 , wherein the magnetic damping washer has an end hinged to the frame and an end elastically connected to the frame through an elastic piece, and the elastic piece is able to apply a force to make the magnetic damping washer swing towards the flywheel; and the adjustment steel rope is connected to a free end of the magnetic damping washer through the frame. 
     
     
         3 . The resistance-adjustable stationary bicycle according to  claim 2 , wherein the resistance-adjustable stationary bicycle further comprises a mounting plate fixed to the frame, and the free end of the magnetic damping washer is arranged between the mounting plate and the flywheel; the elastic piece is a compression spring having two ends respectively abutting against the mounting plate and the magnetic damping washer; and a limiting rod is arranged on the mounting plate and penetrates through the magnetic damping washer to be connected with a limiting block. 
     
     
         4 . The resistance-adjustable stationary bicycle according to  claim 1 , wherein the controller is further connected with a communication module to be connected to a handheld electronic terminal device, so that the controller can control the adjustment motor through the external handheld electronic terminal device. 
     
     
         5 . The resistance-adjustable stationary bicycle according to  claim 1 , wherein the resistance-adjustable stationary bicycle further comprises a handle part, and the adjustment knob is arranged on the handle part; the frame comprises a bottom frame, a seat support and a handlebar support, and the seat support and the handlebar support are fixed to the bottom frame in a V shape; and the handle part is arranged in a middle of the handlebar support in a vertical direction. 
     
     
         6 . The resistance-adjustable stationary bicycle according to  claim 5 , wherein the resistance-adjustable stationary bicycle further comprises a brake pad and a steel brake cable; the handle part is pivoted to the handlebar support through a rotary shaft, and the brake pad is pivoted to a position, close to the flywheel, of the frame; and two ends of the steel brake cable are eccentrically connected to the handle part and the brake pad respectively, so that the handle part and the brake pad are linked together. 
     
     
         7 . The resistance-adjustable stationary bicycle according to  claim 6 , wherein a crank is arranged at a lower end of the handle part, and one end of the steel brake cable is hooked on the crank. 
     
     
         8 . The resistance-adjustable stationary bicycle according to  claim 6 , wherein the brake pad has an end pivoted to the frame and an end provided with a tension spring so as to be elastically connected to the frame through the tension spring; and the steel brake cable is connected to the brake pad to apply a force to the brake pad which in turn overcomes a resistance from the tension spring to rotate. 
     
     
         9 . The resistance-adjustable stationary bicycle according to  claim 2 , wherein the resistance-adjustable stationary bicycle further comprises a handle part, and the adjustment knob is arranged on the handle part; the frame comprises a bottom frame, a seat support, and a handlebar support, and the seat support and the handlebar support are fixed to the bottom frame in a V shape; and the handle part is arranged in a middle of the handlebar support in a vertical direction. 
     
     
         10 . The resistance-adjustable stationary bicycle according to  claim 9 , wherein the resistance-adjustable stationary bicycle further comprises a brake pad and a steel brake cable; the handle part is pivoted to the handlebar support through a rotary shaft, and the brake pad is pivoted to a position, close to the flywheel, of the frame; and two ends of the steel brake cable are eccentrically connected to the handle part and the brake pad respectively, so that the handle part and the brake pad are linked together. 
     
     
         11 . The resistance-adjustable stationary bicycle according to  claim 10 , wherein a crank is arranged at a lower end of the handle part, and one end of the steel brake cable is hooked on the crank. 
     
     
         12 . The resistance-adjustable stationary bicycle according to  claim 10 , wherein the brake pad has an end pivoted to the frame and an end provided with a tension spring so as to be elastically connected to the frame through the tension spring; and the steel brake cable is connected to the brake pad to apply a force to the brake pad which in turn overcomes a resistance from the tension spring to rotate. 
     
     
         13 . The resistance-adjustable stationary bicycle according to  claim 3 , wherein the resistance-adjustable stationary bicycle further comprises a handle part, and the adjustment knob is arranged on the handle part; the frame comprises a bottom frame, a seat support, and a handlebar support, and the seat support and the handlebar support are fixed to the bottom frame in a V shape; and the handle part is arranged in a middle of the handlebar support in a vertical direction. 
     
     
         14 . The resistance-adjustable stationary bicycle according to  claim 13 , wherein the resistance-adjustable stationary bicycle further comprises a brake pad and a steel brake cable; the handle part is pivoted to the handlebar support through a rotary shaft, and the brake pad is pivoted to a position, close to the flywheel, of the frame; and two ends of the steel brake cable are eccentrically connected to the handle part and the brake pad respectively, so that the handle part and the brake pad are linked together. 
     
     
         15 . The resistance-adjustable stationary bicycle according to  claim 14 , wherein a crank is arranged at a lower end of the handle part, and one end of the steel brake cable is hooked on the crank. 
     
     
         16 . The resistance-adjustable stationary bicycle according to  claim 14 , wherein the brake pad has an end pivoted to the frame and an end provided with a tension spring so as to be elastically connected to the frame through the tension spring; and the steel brake cable is connected to the brake pad to apply a force to the brake pad which in turn overcomes a resistance from the tension spring to rotate. 
     
     
         17 . The resistance-adjustable stationary bicycle according to  claim 4 , wherein the resistance-adjustable stationary bicycle further comprises a handle part, and the adjustment knob is arranged on the handle part; the frame comprises a bottom frame, a seat support and a handlebar support, and the seat support and the handlebar support are fixed to the bottom frame in a V shape; and the handle part is arranged in a middle of the handlebar support in a vertical direction. 
     
     
         18 . The resistance-adjustable stationary bicycle according to  claim 17 , wherein the resistance-adjustable stationary bicycle further comprises a brake pad and a steel brake cable; and the handle part is pivoted to the handlebar support through a rotary shaft, and the brake pad is pivoted to a position, close to the flywheel, of the frame; and two ends of the steel brake cable are eccentrically connected to the handle part and the brake pad respectively, so that the handle part and the brake pad are linked together. 
     
     
         19 . The resistance-adjustable stationary bicycle according to  claim 18 , wherein a crank is arranged at a lower end of the handle part, and one end of the steel brake cable is hooked on the crank. 
     
     
         20 . The resistance-adjustable stationary bicycle according to  claim 18 , wherein the brake pad has an end pivoted to the frame and an end provided with a tension spring so as to be elastically connected to the frame through the tension spring; and the steel brake cable is connected to the brake pad to apply a force to the brake pad which in turn overcomes a resistance from the tension spring to rotate.