Electromagnetic relay

Details Electromagnetic relay Electromagnetic relay

1993-08-04

1994-06-07

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Polarity-responsive

335 80, H01H 5122

Patent

active

053193318

ABSTRACT:
An electromagnetic relay having a plate spring provided with a fixed contact, a movable contact and an L-shaped bent portion at the middle portion of the plate spring, and an armature fixed on one side of the plate spring with respect to the bent portion. The armature includes a first offset portion spaced apart from the plate spring between a first fixed portion of the plate spring and the bent portion and a blocking portion for changing the supporting arrangement of the plate spring in accordance with the deflection of the plate spring. A yoke is fixed on the other side of the plate spring with respect to the bent portion and has a second offset portion spaced apart from the plate spring between a second fixed portion of the plate spring and the bent portion. As a result, the magnetic path of the armature and the yoke is not made narrow in the case where a working precision is increased by reducing the number of the portions at which the plate spring is bent, and a sufficient contact pressure can be maintained without generating a two-step operation phenomenon even when the suction force of the coil is low.

REFERENCES:
patent: 4691181 (1987-09-01), Katsutani et al.
patent: 5083104 (1992-01-01), Bassino

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