Apparatus for damping the bouncing or chatter of relay armatures

Details Apparatus for damping the bouncing or chatter of relay armatures Apparatus for damping the bouncing or chatter of relay armatures

1977-03-24

1978-03-28

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335277, H01F 708

Patent

active

040817750

ABSTRACT:
The present invention is directed to an improved electromagnetic relay having means for eliminating the chatter or bounce of the relay armature upon the movement of the relay armature from its energized position to its rest position, that is, the releasing or returning movement of the relay armature. An armature stopping means is formed by two resilient strips which deflect in response to the returning movement of the relay armature. This deflection of these resilient strips stores energy in these resilient strips for returning the relay armature to its initial rest position. In addition to these two resilient strips, the armature stopping means of the present invention includes means for generating independent counter forces which oppose the deflection of these resilient strips. One of these counter forces is a frictional force generated by the abuttment of a bent flange forming part of each of the resilient strips against rigid mounting elements for mounting the two resilient strips. Another counter force is generated by additional bent flanges which connect these resilient strips to the rigid mounting elements. Finally, the counter forces generated by the present invention are influenced by the bending strengths of the resilient strips.

REFERENCES:
patent: 3148313 (1964-09-01), Hancock
patent: 3259812 (1966-07-01), O'Neil
patent: 3675172 (1972-07-01), Petusky
patent: 3818397 (1974-06-01), Roslin

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