Method for adjusting piezoelectric relay operating gaps

Details Method for adjusting piezoelectric relay operating gaps Method for adjusting piezoelectric relay operating gaps

1978-12-26

1980-07-15

Husar, Francis S.

Metal working

Method of mechanical manufacture

Electrical device making

337 94, 337368, H01H 1100

Patent

active

042121019

ABSTRACT:
A method for adjusting the operating gap between the actuator beam (11, 12) and the moveable contact spring (13, 14) of a piezoelectric relay to achieve a gap (gf) of a width to achieve optimum relay reliability. A fixed contact (24) upon which the contact (35) of the spring (13) rests, is mounted on a bracket (25) in turn mounted on the relay substrate (15) by a solder layer (30). The relay actuator beam (11), normally adapted to raise the spring (13) to separate the contacts, is separated from the spring (13) by an initial gap (g) and is energized by an adjust voltage (Va) of a magnitude to exert a force just equal to the spring force. The solder layer (30) is then heated to the melting point to permit the spring (13) to force bracket (25) downward and itself into contact with the beam (11). When the forces exerted by the beam (11), the fixed contact, and the spring (13) reach equilibrium, the solder layer (30) is allowed to set and the adjust voltage (Va) is removed. The beam (11) restores, leaving the desired gap (gf) between itself and the spring (13).

REFERENCES:
patent: 2412142 (1946-12-01), Getchell
patent: 2951136 (1960-08-01), Wells
patent: 3361883 (1968-01-01), Brassard
patent: 3673535 (1972-06-01), Rosenberg
patent: 4047141 (1977-09-01), Holden

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