| 摘要 |
PROBLEM TO BE SOLVED: To facilitate attachment and detachment of edge-ornamented frames on front face of a pachinko machine game board. SOLUTION: The inside of four corners of a game-board attaching frame 1 is provided with parallel planar attachment members 3a and 3b contacting or neighboring to non-game region of the game board 20. Engaging holes 4 and 7, and engaging pieces 5, 6, 8, and 9 are formed on the attachment members 3a and 3b. On the other hand, projections that can rotatably engage with the engaging holes 4 and 7, and holes 33, 34, 43 and 44 that can receive the engaging pieces 5, 6, 8 and 9, as well as holes 35 and 36, are formed in edge-ornamented frames 30 and 40. The engaging pieces 5, 6, 8 and 9 are provided with projections that engage with holes 35 and 36 when the edge-ornamented frames 30 and 40 rotate around the axes of engaging projections.
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