| 摘要 |
A speed servo-control apparatus is provided for use in combination with a walking-running exercise machine including a moving belt on which a user may walk or run and a direct current drive input for controlling the speed of the moving belt. The apparatus has a frame bracket and a control unit rotatably mounted to the frame bracket, and is provided with an assembly for mounting the frame bracket at a predetermined position with respect to the machine. The apparatus is also provided with a cord assembly having two opposite extremities, one of the extremities being operatively connected to the control unit and the other of the extremities being attachable to the user of the apparatus so as to rotate the control unit in a given direction when the cord assembly is pulled forward. The apparatus is further provided with a recoil mechanism which is operatively connected to the control unit for rotating the control unit in a direction opposite to the given direction as soon as the cord assembly is released, and with an electrical generator which is operatively connected to the control unit and provided with at least two wires connectable to the direct current drive input for producing electrical signals which are proportional to the rotation of the control unit in the given direction. When the apparatus is used, after the frame bracket has been mounted at the predetermined position and the at least two wires electrically connected to the at least two wire direct current drive input, the position of the user of the machine, on the moving belt will increase or decrease the speed thereof.
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