Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Multiple contact type
Patent
1983-10-13
1985-11-19
Martin, John C.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Multiple contact type
335128, 335133, 200283, H01H 902
Patent
active
045545200
ABSTRACT:
In a compact electromagnetic miniature relay comprising a contact spring (12) which is firmly clamped at one end, and which bears double contacts (9, 10) arranged on each side, and with the connecting line thereof extending vertically in relation to the longitudinal axis of the contact spring, and which are capable of being moved by an actuator (6) arranged on the armature (5), from stationary break contacts (7) to stationary make contacts (8), with said contact spring (12) being divided by a longitudinal slot (16) partly into two parallel spring legs (19, 20) pretensioned against the break contacts (7), and in which the actuator (6) engages between the clamping point (13) and the free end (11) of the contact spring, the actuator (6), according to the invention, is designed to have at least the same width as the contact spring (12) at the actuating point (17), with the longitudinal slot (16) beginning at a small spacing from the actuating point (17) and extending up to the end (11) of the contact spring (12), thus forming two spring legs (19, 20) which are capable of being moved independently of one another and which bear the pairs of switching contacts (9, 10), and within the area between the actuating point (17) and the clamping point (13), the cross section of the contact spring (12) is reduced to such an extent that it can be twisted more easily. Consequently, a "cross-contacting" of the double contacts is avoided and a service life of a relay can be prolonged.
REFERENCES:
patent: 2282687 (1942-05-01), Vigren et al.
patent: 2632065 (1953-03-01), Smith et al.
patent: 4364018 (1982-12-01), Dammert et al.
Andrews George
International Standard Electric Corporation
Martin John C.
Michals William J.
Raden James B.
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