| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To surely hold a cover member in a closed state while avoiding both increase in the weight of a clamp shaft and decrease in a working efficiency. <P>SOLUTION: When the clamp shaft 26 is so positioned that the cover is closed, first eccentric cams 30F, 30R press a pressure receiving part 23 from the underside and the clamp shaft 26 presses the upper surface of the cover member 13 by a reaction force from the pressure receiving part 23 at both ends of the clamp shaft 26. Since a second eccentric cam 31 pushes up a clamp member 37 by pushing the clamp member from the underside at the center portion of the clamp shaft 26, hooks 45, 46 are locked to a tank body 11, the further upward movement of the clamp member 37 is restrained, and the clamp shaft 26 presses the upper surface of the cover member 13 by the reaction force from the clamp member 37. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
