| 摘要 |
PROBLEM TO BE SOLVED: To easily install and remove a casing frame to a casing frame fitting groove of an opening frame in a single operation, and to reuse the removed casing frame. SOLUTION: This casing frame locking metal fitting 1 used to install a casing frame 8 in a casing frame fitting groove 7 of an opening frame 6, has a cross-sectional L shape composed of a first piece 2 formed on an almost flat surface and a second piece 3 formed on a curved surface warped to the recessed corner side, and is featured by being constituted so that the second piece is provided with a first locking claw 4 projecting to the projected corner side and a second locking claw 5 projecting to the recessed corner side; the first locking claw of the second piece bites in a side surface of a casing fitting groove when fitted to the casing fitting groove; and the second locking claw bites in a side surface of the casing frame when inserting the casing frame into the casing fitting groove in a state of allowing the first piece to abut to a bottom surface of the casing fitting groove and allowing the second piece to abut to the side surface of the casing fitting groove.
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