PACHINKO BALL SHOOTING DEVICE, PACHINKO MACHINE, PACHINKO BALL SHOOTING ROD AND SHOOTING ROD ROTATING SPEED DETECTING DEVICE

摘要

PROBLEM TO BE SOLVED: To make pachinko ball shooting strength const. at a required strength by providing a biasing force correcting means which corrects increase and decrease of biasing force of a spring in such a way that an actual shooting strength and a target shooting strength coincides with each other based on detected results by an actual shooting strength information detecting means and a target shooting strength informa tion detecting means. ;SOLUTION: When an operational handle is rotated to a required position, the rotational angle is detected by means of a rotational angle sensor 202 and size on a target strain amplitude is obtd. as an information related to a required shooting strength from the rotational angle by means of a computer. Then, a pachinko ball 140 is shot, a semiconductor strain guage 204 detects a state of strain of a shooting rod 11 and makes the dimension of the strain amplitude a numeral to obtain the dimension of actual strain amplitude as information related to the actual shooting strength. Then, a microcomputer 200 compares the actual strain vibration amplitude with the target strain amplitude, namely, the actural shooting strength with a required shooting strength and when there exists a difference, they are made to coincide with each other by adjusting tensile force of a coil spring 114.;COPYRIGHT: (C)1998,JPO