Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Polarity-responsive
Patent
1984-10-04
1987-03-03
Hix, L. T.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Polarity-responsive
335230, 335274, H01H 5122
Patent
active
046478850
ABSTRACT:
An electromagnetic relay includes an electromagnet, an armature assembly opposed to the electromagnet which moves according to the selective energization of the electromagnet, a contact mechanism which operates according to the movement of the armature assembly, and a pair of sheet springs which support the armature assembly so that it can reciprocate along its direction of motion. Thus, because the biasing force characteristic curve may be altered by altering the spring forces and characteristics of either or both of the sheet springs, it is possible to greatly expand the possible range and variety of adjustment of the relay, as opposed to the case in which only one sheet spring is used. The two sheet springs may optionally be mounted one on either side of the armature assembly, with respect to its direction of motion. And, optionally, a first one of the sheet springs is coupled to the armature assembly by its central portion and to a fixed member by its two end portions, while a second one of the sheet springs is coupled to the armature assembly by its two end portions and to a fixed member by its central portion. The fixing of the springs to the armature assembly and/or to the fixed members may either be loose, sliding, turning, or cantilever type; each has its benefits in terms of preventing wobbling of the armature assembly. The armature assembly may be provided with guide feet for keeping its motion rectilinear and orthogonal to the longitudinal direction of the electromagnet.
REFERENCES:
patent: 3987383 (1976-10-01), Antonitsch
Maenishi Kozo
Nakanishi Youichi
Brown Brian W.
Hix L. T,.
Omron Tateisi Electronics Co.
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