| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a batting practice device made with a wire-pulley system, in which a hitting ball after batting, can immediately return to the original position to stop, and the whole of the device is compact. Ž<P>SOLUTION: A hitting ball 1 divides a pair of upper wires 2 and another pair of lower wires 3, other ends of the wires 2, 3 are fixed with a moving pulley mechanism comprising the combination of fixed pulleys and moving pulleys and pull-back force is given to the moving pulleys 43, 44. The hitting ball 1 is arranged radially on the batting face Sa which includes the wires 2, 3 and is held in the stationary position with a pretension. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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