Polarized electromagnetic relay

Details Polarized electromagnetic relay Polarized electromagnetic relay

1986-10-24

1987-12-15

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Polarity-responsive

335 85, 335234, H01H 5122

Patent

active

047136383

ABSTRACT:
A bistable type of electromagnetic relay has a movable block including a pair of permanent magnet units. Each of the magnet units has a permanent magnet and a pair of generally U-shaped magnetic plates attached to its opposite poles. A rotation of the movable body actuates relay contact members. A yoke has opposite ends, each formed by a pair of opposing end pieces, the end of the magnetic plates being arranged in spaces defined by the opposing end pieces. A coil supporting a spool has a through-hole for receiving a core which is inserted therein. Flanges are formed at opposite ends and at a center portion of the spool, with a plurality of protrusions protruding outwardly on both sides of each flange. A pair of base members have grooves and recesses for receiving the protrusions on the flanges of the spool, for rotatably supporting the movable block.

REFERENCES:
patent: 4538126 (1985-08-01), Bando
patent: 4560966 (1985-12-01), Nagamoto et al.
patent: 4563663 (1986-01-01), Niekawa et al.
patent: 4625191 (1986-11-01), Oberndorfer et al.

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