| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an endoscope constituted so as to achieve the miniaturization of a traction mechanism part for adjusting the flexibility of an insertion part and capable of reducing the drawing operation force of a wire. <P>SOLUTION: The traction mechanism part of the endoscope 10 includes a pulley 74 for drawing the wire to slacken the same and a speed reducing mechanism part having a worm gear for applying not only rotary drive force but also self-braking force to the pulley 74 and can apply drive to the pulley 74 by the repeated revolving operation of a small stroke of the operation lever 40. Since the pulley 74 is revolved through the speed reducing mechanism part in the traction mechanism part, the drawing operation force of the wire 46 can be reduced. Further, the traction mechanism part can be miniaturized by using the speed reducing mechanism part. Furthermore, since the drawn wire 46 holds the state wound up around the pulley 74 by the self-braking force of the worm gear, the flexibility of a soft part 24 can be easily held. <P>COPYRIGHT: (C)2012,JPO&INPIT |
