| 摘要 |
PROBLEM TO BE SOLVED: To provide a picture frame having a square or rectangular shape, assembled into a various sizes by increasing/reducing the number of frame pieces of the same size, rigidly connected between the frame pieces, and prevented from unexpected disengagement between the pieces. SOLUTION: A corner frame piece (a) and linear frame piece b are designed to be connected by engageably/disengageably fitting a notched cylindrical recess 2 and a columnar projection 6, and a columnar projecting portion 3 and a notched cylindrical recess 5 closely in the axial direction, respectively. The linear frame pieces b are designed to be connected by engageably/disengageably fitting the respective notched cylindrical recess 5 and the columnar projections 6 closely in the axial direction, respectively. Locking keys c and c' are adapted to engage into key grooves 4 and 7 to lock the connected portions. COPYRIGHT: (C)2007,JPO&INPIT
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