| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that a clamp device is used when fixing a placing table for placing an infusion pump or the like thereon to a stand, however, if a torque limiter mechanism is arranged, the clamp device idles when the torque limiter does not operate, and there arises a risk of a fall.SOLUTION: An inclined protrusion 65 and a vertical protrusion 71 are formed at an opposing face of an attachment part 57 at a rotation operation part side, and an inclined protrusion 83 and a vertical protrusion 89 are formed at an opposing face of an attachment part 77 at a male screw shaft 13 side. In an initial stage, inclined pressure-contact faces 67, 85 of the inclined protrusions 65, 83 are pressure-contact with each other, and a torque limiter clamp-operates in an operable state, however, when the pressure-contact faces are worn by friction, vertical pressure-contact faces 73, 91 of the vertical protrusions 71, 89 are pressure-contact with each other, and a clamp function remains, but the torque limiter does not operate. Accordingly, even if a clamp device is used for a long period of time, the clamp function is safely maintained. |
