| 摘要 |
A frame of a bed used as a sofa is provided to assemble and disassemble freely a second or third cushion to/from a first cushion by easily assembling and separating an armrest frame and an extension frame through first and second detaching pieces installed at a bottom frame and a moving frame and a third detaching piece installed at the upper end of the moving frame. A frame of a bed used as a sofa is composed of: a bottom frame(20) for supporting the floor and having a folding gear(10); a moving frame(30) connected with the folding gear and moved for the bottom frame by the folding gear; a first detaching piece(40) installed at a predetermined part of the bottom frame; a second detaching piece(50) installed at a predetermined part of the moving frame; and an armrest frame(60) detachably installed to the first and second detaching pieces and composed of a hinge(h) installed in the center and first and second detaching shafts(61,62) formed at both ends and detachably combined to the first and second detaching pieces.
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