A weight stack of a weight training apparatus can be automatically set by a desired weight, and it is related with the weight automatic setting apparatus of the weight training apparatus comprised so that the number of exercises performed may be shown.;The weight automatic setting device of the weight training apparatus includes a frame, guide means fixed to the frame, a weight stack coupled to the guide means, which can be reciprocated up and down and formed with a penetrating thread, and the weight described above when setting the weight. A rotary shaft screwed to the stack, a step motor for driving the rotary shaft, a central shaft movably coupled inside the rotary shaft, and one end of the central shaft is fixed and coupled to the guide means and substantially a weight stack. The plate for lifting the cable is fixed, and the control unit for controlling the rotation of the step motor.;The control unit is characterized in that it comprises a position sensor for detecting the initial position of the step motor, and the means for receiving the signal from the recovery sensor for detecting the number of times the weight stack is moved up and down.
展开▼
