Fitness cycle

Abstract

The fitness cycle of the present invention is equipped with a DC motor along with a control circuit, enabling the users to drive the trampling set via the DC motor. Multiple speeds can be adjusted via a control device to generate a steering effect. Conversely, if the users need an increased movement resistance load, the fitness cycle allows for free switching to generate resistance by the same DC motor through current control. The resistance value to generate a multi-speed resistance movement effect is adjustable. With the configuration of the seating unit, the users flexibly adjust and adapt themselves to an optimum ergonomic posture.

1 . A fitness cycle structure, comprising
 a carriage;   a trampling set unit on said carriage, said trampling set unit being comprised of a DC motor, secondary drive unit, and trampling set;   a seating unit on said carriage; and   a control device also being connected said trampling set, said control device comprising:
 a circuit control unit; 
 an output module, connected with said circuit control unit; 
 a signal control and switching unit, connected with said output module; 
 a vector compensation module, connected with said signal control and switching unit; 
 a resistance control loop, connected with said signal control and switching unit; 
 a steering control loop, connected with said signal control and switching unit; and 
 a brake module, connected with said resistance control loop wherein said control device inputs a signal to said circuit control unit enabling a power supply to feed an output power to said DC motor generating a rated voltage, said signal being transmitted via an output module to said signal control and switching unit, said signal being read computed along with a vector compensation module, and then output to said steering control loop, enabling said DC motor to drive said trampling set so as to form an electric steering system, and wherein if said trampling set is applied to drive said DC motor when input voltage of said trampling set is bigger than a previous rated voltage of said DC motor, said signal being detected by said circuit control unit and fed back reversely to said output module, and then transmitted to said signal control and switching unit for reading and computation, and finally output said resistance control loop, damping value being output by said brake module, shaping a motion resistance system. 
   
   
   
       2 . The fitness cycle structure defined in  claim 1 , wherein said DC motor is a brush motor or brushless motor. 
   
   
       3 . The fitness cycle structure defined in  claim 1 , wherein said circuit control unit is operated through said control device, changing revolution number of said DC motor, allowing for multi-speed variation of DC motor. 
   
   
       4 . The fitness cycle structure defined in  claim 1 , wherein said signal control and switching unit is an operation amplifier (OP AMP). 
   
   
       5 . The fitness cycle structure defined in  claim 1 , wherein said circuit control unit is equipped with an A/D converter to detect the change of rated voltage. 
   
   
       6 . The fitness cycle structure defined in  claim 1 , wherein said secondary drive unit is composed of a pulley, fly wheel and drive belt. 
   
   
       7 . The fitness cycle structure defined in  claim 1 , wherein said control device is available with a manual switching mode or an automatic switching mode. 
   
   
       8 . A fitness cycle structure, comprising:
 a carriage;   a trampling set unit on said carriage, said trampling set unit being comprised of a DC motor, secondary drive unit, and trampling set;   a seating unit on said carriage, said seating unit having a mobile unit, a lifting unit and a chair seat, said mobile unit being comprised of a slide device and a mobile motor, said mobile motor being adapted onto a front end of said carriage and being provided with a shifting axle mated with said slide device said lifting unit being coupled with said mobile unit and being provided with a support frame, a guide device and a lifting motor, said support frame being fastened onto said slide device, said guide device being mounted onto said support frame, said lifting motor being mounted onto said slide device and being provided with a lifting shaft, said chair seat being coupled with said lifting unit, said chair seat having a back coupled with said guide device of said lifting unit and a bottom coupled with said lifting shaft of said lifting motor; and   a control device being connected with said trampling set, said control device comprising:   a circuit control unit;   an output module, connected with said circuit control unit;   a signal control and switching unit, connected with said output module;   a vector compensation module, connected with said signal control and switching unit;   a resistance control loop, connected with said signal control and switching unit;   a steering control loop, connected with said signal control and switching unit; and   wherein said control device inputs a signal to said circuit control unit enabling a power supply to feed an output power to said DC motor generating a rated voltage, said signal being transmitted via an output module to said signal control and switching unit, said signal being read computed along with a vector compensation module, and then output to said steering control loop, enabling said DC motor to drive said trampling set so as to form an electric steering system, and wherein if said trampling set is applied to drive said DC motor when input voltage of said trampling set is bigger than a previous rated voltage of said DC motor, said signal being detected by said circuit control unit and fed back reversely to said output module, and then transmitted to said signal control and switching unit for reading and computation, and finally output to said resistance control loop, damping value being output by said brake module, shaping a motion resistance system.   
   
   
       9 . The fitness cycle structure defined in  claim 8 , wherein DC motor is a brush motor or brushless motor. 
   
   
       10 . The fitness cycle structure defined in  claim 8 , wherein said circuit control unit is operated through said control device, changing a revolution number of said DC motor, allowing for multi-speed variation of said DC motor. 
   
   
       11 . The fitness cycle structure defined in  claim 8 , wherein said signal control and switching unit is an operation amplifier (OP AMP). 
   
   
       12 . The fitness cycle structure defined in  claim 8 , wherein said circuit control unit is equipped with an A/D converter, detecting change of rated voltage. 
   
   
       13 . The fitness cycle structure defined in  claim 8 , wherein said secondary drive unit is comprised of a pulley, fly wheel and drive belt. 
   
   
       14 . The fitness cycle structure defined in  claim 8 , wherein said control device is available with switching between manual and automatic. 
   
   
       15 . The fitness cycle structure defined in  claim 8 , wherein the mobile unit and lifting unit of the seating unit moves up/down or forward/backward via a chair seat controller. 
   
   
       16 . The fitness cycle structure defined in  claim 8 , wherein said chair seat controller is placed at a preset location of said chair seat. 
   
   
       17 . The fitness cycle structure defined in  claim 8 , wherein said chair seat controller is placed onto said control device.