| 摘要 |
A bed adjusted according to the vertebral curve of human includes groups of ascending and falling devices(10),one of which contains a soleplate(1)on which a motor (14)is fixed and several supports (12)extend .The output shaft(141) of the motor(14)is a screw coupled to the central of a moveable stand(2)which moves upwardly or downwardly by driving the screw. The moveable stand(2)is located on the soleplate(1)and supported by supports (12). The moveable stand(2)is provided with a plurality of elastomers (22)containing sense sticks(23)which pass through the moveable stand(2)so that the sensor(13)can sense the drop height of elastomers (22). Thesensor(13)and the motor (14)are connected to a control circuit(3),and the moveable stand(2)is driven to ascend to the desired height by the motor(14). |
