| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that a conventional futon cover has an opening only in a longitudinal side of a cover body and it is difficult to take out the futon or put the futon in the cover. SOLUTION: A slider 17a is slid in a left direction, a slider 17b is slid upward, and a slider 17c is slid downward. Elements 15 constituting an element group are separated, and a longitudinal opening/closing portion 9 and a horizontal opening/closing portion 11 are opened. An upper sheet 7 is turned in the direction indicated by an arrow and opened along an imaginary line. A large opening 19 is formed in the upper sheet 7. The futon is put in from the opening 19. Next, the slider 17a is slid in a right direction, the slider 17b is slid downward, and the slider 17c is slid upward. The elements 15 constituting the element group is engaged with each other, and the longitudinal opening/closing portion 9 and the horizontal opening/closing portion 11 are closed. COPYRIGHT: (C)2005,JPO&NCIPI
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