GAME BOARD ATTACHMENT STRUCTURE FOR PACHINKO GAME MACHINE

PROBLEM TO BE SOLVED: To facilitate the exchange of a game board by not only fixing the game board by pressure to a front surface frame but moving the game board on a plane in parallel with the front surface frame so as to correctly perform positioning. SOLUTION: This game board attachment structure for a pachinko game machine is constituted by fitting one end edge of the game board 2 to a bridge member 7 which is arranged on one side of the opening 3 of the front surface frame 1, planting shafts 15 on the other side of the opening of the front surface frame, supporting an engagement piece 16 by the shaft so as to be freely rotatable on the plane which is in parallel with the front surface frame, and rotating the engagement piece so as to be fixed by pressure to the game board. A circular arcuate part 21 where the curvature center of an outer peripheral surface 21a is substantially defined as the spindle is integrally formed with the engagement piece. A circular arcuate notch 27 with curvature being substantially the same as that of the circular arcuate part is formed at the other edge of the game board. Then the circular arcuate part is brought into pressure contact with the notch 27 of the game board by rotating the engagement piece. COPYRIGHT: (C)2006,JPO&NCIPI