| 摘要 |
<p>A contact switching device comprises a driving link (32) pivoted on its one end (30), a spring (36) loaded slide (34) slidably disposed within a longitudinal guide groove (32a) disposed on the other end portion of the driving link (32), a connecting link (44) pivoted at one end (48) on the slide (34) and at the other end (46) on an intermediate point (46) of a driven link (38) pivoted on its one end (40) and a movable contactor (42) disposed on the other end portion of the driven link (38) to separably engage two stationary contacts (16a1, 16a2). Alternatively two connecting links (44,44') having equal lengths may be pivoted at one end on the slide (34) and at the other ends (46, 46') on respective driven links (38, 38') at their points equidistant from the pivot (40) on which the driven links are pivoted. The driven links (38,38') have equal length and movable contactors (42) for separably engaging pairs of stationary contacts (16aj, 16a2; 16b,, 16b2) with the contact (16a1) of one pair connected to that (16b2) of the other pair.</p> |
