| 摘要 |
PROBLEM TO BE SOLVED: To perform adjustment to stable hitting force at all times, to freely lay out an installation position, and to finely adjust a hitting force setting range. SOLUTION: This game ball hitting device comprises: a torsion coil spring 18 externally mounted on a rotary shaft 12 which is freely rotatably pivoted to a base plate 10 and for which a ball hitting hammer is fixed to one end; a handle side cup 20 engaged with one end of the spring 18 and turned centering on the rotary shaft 12; a hammer side cup 22 engaged with the other end of the spring 18 and fixed to the other end side of the rotary shaft 12; a cam 24 abutting on a cam roller 38 for moving back the ball hitting hammer against the energizing force of the spring 18 and releasing it at a prescribed position; and a hitting force adjusting means for transmitting the turning amount of an operation handle to the handle side cup 20 and turning the cup in the direction of increasing the energizing force of the spring. The hitting adjusting means is provided with an operation gear 28 fixed to the operation handle, the turning gear 20A of the handle side cup 20 and the intermediate gear 30 of both gears. The ball hitting hammer is disposed such that a hammer tip part for hitting game balls is below the rotary shaft. COPYRIGHT: (C)2006,JPO&NCIPI
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