| 摘要 |
PURPOSE:To make a switchgear easy to assemble and adjust and inexpensive and to assure an interruption operation by enabling the preliminarily selection and setting of whether a switch program for a specified period is executed automatically at the specified period longer than said period or not and enabling also a contingent interruption operation. CONSTITUTION:Switch levers 10, 11 are engaged or disengaged with or from a setter 2 as a 24hr scale plate 1 and a 1-week scale plate 4 rotate, then the levers push the plunger 3-1 of a switch 3 via an intermediate lever 13. The lever 17 can be selectively detained with 3 kinds of the positions; ''AUTO'', ''ON'' and ''OFF''. The switch 3 is held open and the 24hr program is cancelled regardless of the correspondence between the lever 10 and the setter 2 when the lever 17 is set at ''AUTO'' and the lever 11 does not correspond to the setter 2 of the plate 4. The lever 13 opens or closes the switch 3 by the lever 10 according to the 24hr program when the lever 11 faces the setter 2 of the plate 4. The switch 3 is separated and isolated from the levers 10, 11 and the interruption content is surely held when the lever 17 is ''ON'' or ''OFF''. |
