| 摘要 |
PROBLEM TO BE SOLVED: To enable to change the mattress face easily and rapidly for the women and the aged without requiring little force, as it is desirable to change the mattress face several times a year in order to use the mattress of a bed comfortably for a long period. SOLUTION: The mattress changer comprises a rotating plate (1) on the top of a central axle (2), a controller (4) at the bottom of the central axle (2), and an electric motor (3) for lifting up and down the central axle (2). The mattress is lifted up and down by the electric motor (3) and rotated by the rotating plate (1) using the controller (4).
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