| 摘要 |
A method for controlling the lifting of support portions of a base structure for a bed or the like, the base structure having a back-support portion (1a) for lifting the back portion of a subject lying thereon and a leg-support portion (1b) for lifting the knees of the subject lying thereon, in which the respective support portions can be lifted by the lifting mechanisms respectively provided for them, characterized in that where all the support portions are lowered to lie flat in a non-raised position from an inclined position after having being pivotally rotated and lifted, first the lifting of the leg-support portion (1b) is initiated, and at a time instant suitably later than the time instant at which the lifting was initiated, the lowering of the back support portion (1a) is initiated; thereafter, the lowering of the back-support portion (1a) is continued, while the leg-support portion (1b) is lifted to a preset highest position and then is lowered to reach its lower limit position of lying flat in a non-raised position at a time instant suitably later than the time instant when the back-support portion (1a) is lowered to its lower limit position of lying flat in a non-raised position. <IMAGE> |
