| 摘要 |
PROBLEM TO BE SOLVED: To prevent the fraudulent opening/closing of a control circuit board storage box in which a control circuit board is stored to be attached to the rear surface of a body or a game board of a pachinko game machine for preventing fraudulent use of the control circuit board. SOLUTION: A ball 278 is forced into an insertion pin inserting part 270 from an inserting pin inserting hole 274 made of plastic resin, etc., by driving the ball 278 with an appropriate force, and then a headed inserting pin 252 is inserted deeper in the inserting direction with the energy. At the time, the tip of a bending open/close piece 256 is locked in the upper end of an inserted pin socket 282, and therefore, a V-shaped bent part 260 of the bending open/close piece 256 is bent in the V shape and a chevron-shaped bent part 262 of the bending open/close piece is bent in the chevron shape as the reaction. As a result, a bending open/close member 258 is opened in the hollow, and the chevron-shaped bent part 262 is in contact with a wall surface inside an inserted pin fixed part 272, so that the headed inserting pin 252 can be securely fixed at the top of the bending open/close member 258. COPYRIGHT: (C)2003,JPO
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