| 摘要 |
A latch relay is provided to feedback a switching state of a main contact point unit by coupling a sub contact point with a remote control device. A latch relay includes a supporting unit(110), a housing unit and a switching contact unit(130). A first yoke and a second yoke are inserted into both ends of a bobbin. A coil cap which wraps a coil is mounted on an upper part of the bobbin. A main contact point movable unit(162a) and a main contact fixed unit(164a) are fixed on a bottom plane. A main contact point unit(160a) has a main contact point plate spring(166a). An end of the main contact point plate spring is coupled to the main contact point movable unit. The other end of the main contact point plate spring is extended to a side plane of the main contact point fixed unit. A sub contact point movable unit(162b) and a sub contact fixed unit(164b) are fixed on a bottom plane. A sub contact point unit(160b) has a main contact point plate spring(166b). An end of the sub contact point plate spring is coupled to the sub contact point movable unit. The other end of the sub contact point plate spring is extended to a side plane of the sub contact point fixed unit. The sub contact point is coupled to a remote control device and feeds back a switching state of the main contact point unit. A driving unit is arranged on an upper part of the bobbin. The driving unit includes an actuator which is rotated by an exited current applied to the coil and operates a switching of the main contact point unit and the sub contact point unit.
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