Method of adjustment of a base structure for a bed or the like

摘要

A method of controlling the coordinative raising of support portions of a base support for a bed or the like, the base support having a back-support portion (1a) for raising the back of a subject lying thereon and a leg-support portion (1b) for raising the knees of a subject lying thereon, in which the respective support portions are provided with respective lifting mechanisms, characterised in that a pressure detecting means (8) is interposed between the back-support portion (1a) and the back of the subject, wherein where the back-support portion (1a) is pivotally rotated and raised to an inclined position, the leg-support portion (1b) is also raised, wherein the leg-support portion (1b) is controlled to lower when the pressure applied from the back-support portion (1a) to the back of the subject and detected by said pressure detecting means (8) has increased to a preset value.