Switching apparatus
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsToshie Takeuchi, Toyomi Ooshige, Hiroyuki Sasao, Hiroyuki Akita, Yukimori Kishida, Mitsuru Tsukima, Kenichi Koyama, Toshiyuki Yoshizawa
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Abstract
A switching device includes a pair of fixed coils and a pair of movable coils, with one pair being disposed between the other pair. Two of the coils may be connected back to back on opposite sides of a support plate to increase the stiffness of the coils and reduce damage due to impact between the fixed and movable coils. The coils include two sets of coils, each set including one of the fixed coils and one of the movable coils. The coil sets can be driven simultaneously or at different times to effect contact opening and closing.
Claims8
A switching device comprising:
- a switch portion having a fixed electrode and a movable electrode which is movable with respect to the fixed electrode between an open position and a closed position to open and close the switch portion;
- a movable shaft which extends from the movable electrode;
- an operating mechanism having a pair of fixed coils and a pair of movable coils, the movable coils being operatively connected to the movable shaft for translating the movable shaft in an axial direction, one of the pairs of coils being disposed between the other pair of coils;
- and
- a controller which controls supply of current to the coils of the operating mechanism.
Dependencies are inferred from the claim text.