| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to sufficiently ensure the game area of a game board by fitting a mechanism for fixing the game board in the front of a body frame into a lock device, thereby eliminating the need for a space.SOLUTION: A transparent hold frame 14 is pivotally supported on one side edge of a body frame 6 so as to freely opened or closed. A lock mechanism 40 provided on the body frame is provided with: a first engagement mechanism that engages the transparent plate hold frame; a second engagement mechanism that engages a game board; and a game board push out mechanism. Disengagement from the transparent plate hold frame takes place by the operation of the first engagement mechanism through the rotating operation of a cylinder lock 12. Disengagement from the game board takes place by the operation of the second engagement mechanism through the further rotating operation after the disengagement of the first engagement mechanism. Through the further rotating operation in the same direction after the disengagement of the second engagement mechanism, the game board push out mechanism is actuated and the game board is pushed out forward. |
