| 摘要 |
PURPOSE:To facilitate simple adjustment and fixation of a movement member by operation of a movement adjustment member, and ensure fixation for the movement member without allowing the movement member to loosen and become fallen. CONSTITUTION:The member is constructed of a screw bolt 1 that is unturnably fixed, a movement member 2 with a penetration hole 2c for letting the screw bolt 1 penetrate therethrough provided to a base 2a thereof and a U nut 3 for fixing the movement member 2 to the screw bolt 1. A horizontal fitting groove 3a for fitting the base 2a of the movement member 2 therein is formed to the upper part of the U nut 3, while an insert groove 3c for the screw bolt 1 and a screw groove 3e are provided together, approximately in U shape in planate view with one end thereof opened, respectively to the upper and the lower end of the fitting groove 3a. Internal thread 3g is provided to the internal surface of the screw groove 3e. With the U nut 3 thrust sideways, the screw bolt 1 is fitted to the insert groove 3c and the screw groove 3e, making the external thread 1a and the internal thread 3g mesh with each other, and the base 2a of the movement member 2 is fitted into the fitting groove 3a. Then, both of holding parts 2d and 3h of the base 2a and the U nut 3 are held together and fixation is made thereby. |
