| 摘要 |
PROBLEM TO BE SOLVED: To tightly secure a structural plate to the back of a game board without putting strain on an engagement means. SOLUTION: In the pachinko game machine a game board mounting frame 2 is installed on the back of a front frame 1. The structural plate 4 is detachably installed to the game board mounting frame 2 by means of a hinge 5 in such way that it can open and close. On the game board mounting frame 2 and the structural plate 4 there are provided engagement means 24 and 25 free to engage and disengage which make the structural plate 4 tightly contact the game board 3 and prevent the structural plate from opening and closing and holding means 30 and 31 to rotatably support the structural plate 4 at a prescribed height.
|
