Electromagnetic relay

Details Electromagnetic relay Electromagnetic relay

1986-05-29

1988-05-10

Goldberg, E. A.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Multiple contact type

335 78, 335 80, H01H 6702

Patent

active

047438770

ABSTRACT:
In an electromagnetic relay including a pivotable armature (11) and contact springs (17) extending substantially in parallel thereto, the actuator (21) for transmitting the armature (11) movement to the contact springs (17) is coupled to the armature (11) with play. Thereby relative displacements between the actuator (21) and the contact spring (17) and the resultant frictional forces are prevented. When the relay is a bistable relay, the coupling between armature (11) and actuator (21) with play furthermore means that in the central position of the armature (11) no spring forces and no frictional forces caused by the actuator (21) are applied thereto but only the magnetic actuating forces will act on the armature (11). Thereby the risk of the armature (11) inadvertently remaining in its neutral central position is practically eliminated.

REFERENCES:
patent: 3553729 (1971-01-01), Mori et al.
patent: 4323945 (1982-04-01), Sauer
patent: 4539540 (1985-09-01), Kimpel
patent: 4563663 (1986-01-01), Niekawa
patent: 4587501 (1986-05-01), Agatahama

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