Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Polarity-responsive
Patent
1988-11-29
1990-04-03
Picard, Leo P.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Polarity-responsive
335128, 335126, H01H 5122
Patent
active
049144103
ABSTRACT:
With a very small hinged armature relay of the printed circuit board type with dual-in-line terminal configuration intended for a very high number of actuations there exists the problem to design the armature resetting spring in such a manner that it withstands said high number of actuations without any risk of failure. For the present relay this problem has been solved by providing a leaf spring as the armature resetting spring being connected in a form-locking manner to the legs of a U-shaped armature (13) extending substantially in parallel to said legs and being connected in a force-locking manner to the coil former (10) constituting the relay structure, this in contrary to the usual way wherein said flat spring would be connected to the legs of the E-shaped magnet yoke (12). By this means it is possible to provide the leaf spring with a length at least equal to the length of the legs of the armature. To facilitate the manufacture and handling the leaf springs of the individual legs are interconnected by a crosspiece to an integral H-shaped flat spring (14).
REFERENCES:
patent: 4122420 (1978-10-01), Brown
patent: 4514711 (1985-04-01), Nagamoto et al.
Cecchini Afro
Diem Hans A.
Donovan L.
Picard Leo P.
Standard Telephon und Radio AG
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