| 摘要 |
PURPOSE:To improve durability by securing a ratchet comprising jaws and spring to a supporter and restricting/releasing a link through said ratchet to lift the operating table. CONSTITUTION:A supporting member 3a is secured to a supporting tool 3 while one end of a link 3d is pivoted rollably/slidably to a pin 3b fitted in said member 3a. The leading edge of a rod 5 in a hydraulic actuator is pivoted rollably/ slidably to the other side of the link 3d through a pin 5c. A contacting section 3g selectively contact against the receiving face 3c to be secured to the supporting tool 3 is secured to the other end of the link 3d. A pin 6b secured to the supporting tool 3 is pivoted at a hole 6a made in the jaw 6. A springboard is arranged on the rear face of the jaw 6 to provide energizing force. |
