| 摘要 |
PROBLEM TO BE SOLVED: To realize a frame structure facilitated in fitting/removal of a horizontal frame to/from a vertical frame and having strong fitting strength. SOLUTION: A figure shows fitting condition of the horizontal frame to the vertical frame with a view from a back side thereof. When engagement pieces 191 and 192 of an attachment 19 are installed in a pair of engagement holes 241 and 242 formed in the predetermined positions of the vertical frame, these engagement pieces are fitted in a notch part formed, directing downward, in a central part of the engagement holes. A lower side plate 171 of the horizontal frame 17 is inserted into the attachment, and while the horizontal frame is installed in the attachment, so that a rear side wall 195 of the attachment is fitted in a notch part 172 of the horizontal frame 17. Finally, a lock pin 23 is passed through openings 193 and 194 of the attachment and an engagement hole 242 to perfectly fix installation of the attachment and installation of the horizontal frame. COPYRIGHT: (C)2004,JPO
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