| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an operating unit in which structure and operating procedure are simplified compared with a conventional operating unit and structure of the operating mechanism is improved so as to secure high reliability with respect to prevention of erroneous operation and incorrect handling in respect of function side as well. <P>SOLUTION: The operating unit has three operating positions A, B, C corresponding to "On", "Off", and "Grounding" of a disconnector using the disconnector as an operating object apparatus, and is equipped with an operating shaft 1 inside a case 11 and an output shaft 2 connected to the operating shaft through a linking mechanism, and switches over the output shaft between the operating positions A-B through the rotating operation of the operating shaft, and the switching between the operating positions B-C is made by manual rotating operation of the output shaft. The linking mechanism 4 is constructed of an operating lever 5, a driven lever 6, and a connecting link 7, and the driven lever and the connecting link are connected by a rotating kinematic pair capable of sliding by a long hole 7a and a connecting pin 6a. Stoppers 14A, 14B, 14C are provided at the locations corresponding to the positions A, B, C respectively opposed to the linking mechanism. Furthermore, as a means of preventing erroneous operation of the operating shaft and the output shaft, a shutter 16 is provided at the end face of the case which closes the output shaft at the operating position of the operating shaft and closes the operating shaft at the operating position of the output shaft. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
