| 摘要 |
PROBLEM TO BE SOLVED: To provide a holding force adjusting device capable of demonstrating a posture holding effect sufficiently for a wide range of loads.SOLUTION: By moving a piston rod 922 of a displacement amount actuator 9 back and forth by a hydraulic pressure from a pressure actuator 8 that is outputted by weight of a placed object placed on a placing member 24, a position of a point of action (a connection shaft 351) of energizing force of a spring 55 is moved, and returning force with respect to a support member 3 (swinging support member 32) is adjusted. |
