| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that a player becomes uncomfortable because the player have to change the set a shooting position constant time to time for always controlling the shooting position since the shooting of game balls fluctuate because the flying force is weakened by generation of the loss in the energy applied to the game ball by the force applied to the shooting hammer due to the load of the bearing in case of shooting by the same force up to now. SOLUTION: In the game machine in which the game balls are shot by hitting, a preheating member 4 is disposed at or in the vicinity of the bearing 1 of the hitting member for shooting by hitting, a temperature sensor is incorporated in the vicinity of the preheating member 4, and the game ball shooting unit equipped with the preheating member 4 is used in the bearing 1 for keeping the bearing at constant temperature. COPYRIGHT: (C)2006,JPO&NCIPI
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