| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an instrument fixing device which has improved fixing position accuracy and improved retaining force. <P>SOLUTION: The instrument fixing device is configured by: arranging bellows flexibly configured by inserting a wire into a number of joint barrels, an attachment for fixing an instrument to the distal end part of the bellows, and a cylinder unit for tightening and loosening the wire on the proximal end part of the bellows; and engaging a link or a wire fixing shaft with a pulley for delaying the wire tightening/loosening movement caused by elongation and contraction of a piston rod of the cylinder unit; and fixing a rear end part of the wire to the link or the wire fixing shaft. As a hand switch or a foot switch, a pressure sensitive switch is employed whose resistance value is varied according to pressure force, so that the tightening and loosening movement is made to follow a variation amount of the resistance value. Furthermore, an inorganic friction material is sintered on either or a both of a spherical part upper outer surface and a cylindrical part lower inner surface of the joint barrels so as to raise a friction coefficient between the connected joint barrels each other. <P>COPYRIGHT: (C)2011,JPO&INPIT |
