| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem in a conventional bearing structure that as a rotating shaft is slid on three regions in total, that is one face kept into contact with a pressing spring and two faces of a V-shaped groove, the frictional loss of a bearing part is increased, and further a rotating speed is lowered and the power consumption is increased as a result of the increase of the frictional loss of the bearing part in a mechanical optical switch, which impairs the reliability in continuous switching operation and an intermittent switching operation. SOLUTION: A width of a recessed part bottom face of a shaft supporting part is determined wider than a width of a cross-section of the rotating shaft, a surface area of a rotating shaft lower face where the recessed part bottom face and the rotating shaft are kept into contact with each other in rotating the rotating shaft, is shaped into the circular arc face, and a first rotation control part for controlling a first attitude and a second rotation control part for controlling a second attitude are respectively mounted at both sides of the rotating shaft, whereby a center of a circular arc of a circular arc face of the rotating shaft can be moved in the parallel direction, and the rotating shaft can take two stationary positions with the first attitude and the second attitude in rotating the rotating shaft. COPYRIGHT: (C)2005,JPO&NCIPI |
