| 摘要 |
PURPOSE:To realize easy fitting by giving desired surface pressure and also realize simple opening. CONSTITUTION:This portion is equipped with inside wedge materials 5 whose inner peripheral surface come into contact with a rotary shaft 2 and whose outer peripheral surfaces are formed into inclination surfaces inclined axially; an outside wedge material 6 of a cylindrical outer surface at whose inner peripheral surface an inclination surface contacting the inclination surfaces of these inside wedge materials 5 is formed; a rotary body boss portion 3 which has an inner peripheral surface contacting the cylindrical outer surface of the outside wedge material 6 and where an end surface to catch the end surface of the inside wedge materials 5 is formed; and tightening means 7 to conduct tightening by drawing the outside wedge material 6 into the inner peripheral surface inside of the rotary body boss portion 3. |
