| 摘要 |
PROBLEM TO BE SOLVED: To provide a frame structure facilitating installation/removal of a rail member and capable of stabilizing shooting of a ball. SOLUTION: The housing frame attachably/detachably houses a game board 10 in a front frame 2 from the back to form a game region PA through a game region opening 20. An outer rail 35 for guiding a game ball shot from a game-ball shooting device 12 to the game region PA is provided with a rail part 36 formed along the contour of the peripheral shape of the opening 20 and a flange part 37 made of the rail part 36 of a front end bent at a right angle to open out. The back of the rail part 36 is supported by a rail supporting face 26 of an opening edge face. The back of the flange part 37 is supported by a flange supporting part 27 to be fixed with a screw 39. The rail member 35 can be installed/removed through the front side of the front frame 2. COPYRIGHT: (C)2008,JPO&INPIT
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