| 摘要 |
A switchable power tap (61) has a housing (62) mounting therein three electrically conductive members or plates (71, 72, 73) which define the electrical outlet portion of the power tap. An electrical inlet portion (74) is defined by three electrically conductive prongs (76, 77, 78) adapted to create a plug-like engagement with a power block (17). Two of the prongs (77, 78) are permanently electrically connected to two of the conductive plates (72, 73). The third prong (76) is part of a switch structure (81) and is slidably supported on but in continuous electrical engagement with a conductive guide member (83) which is electrically connected to the third conductive plate (71). This slidable, and hence switchable prong (76) can be selectively positioned in any one of three different positions, so that when the power tap (61) is plugged into the power block (17), the switchable prong (76) is electrically engaged with a selected one of three different electrical circuits provided in the power block (17), depending upon the preselected position of the switchable prong (76). |
