Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Multiple contact type
Patent
1986-08-28
1988-07-26
Goldberg, E. A.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Multiple contact type
335202, 200293, H01H 6702
Patent
active
047603640
ABSTRACT:
An enclosure for an electromagnetic contactor is provided with upper (2) and lower (4) housings and a cover (6) over the upper housing (2), all comprised of molded insulating material. The upper housing (2) is joined to the lower housing (4) by inserting its lugs (2m,2n) in notches (4e,4f) and rocking it so that a pair of hooks (2o,2p) enter corresponding holes (4g,4h) at one end and a clamp (26) is pressed over a catch (2q) at the other end. A leaf bias spring (30) between the magnet frame (28) and the molded coil (32) applies force to the molded coil (32) which is pressed against the upper housing (2) so that the coil will not move but allows the magnet frame to align with the armature (40) or to move under armature impact, takes up slack between the upper (2) and lower (4) housings, biases the coil (32) rigidly against the upper housing (2) and allows the magnet (38,40) to move relative to the housings (2,4). Blowouts (46) are press-in held in the cover (6) for correct positioning when the cover is assembled. Inclines (32f) on the top of the coil (32) guide the return spring (42) into correct centered position when the upper housing (2) is rocked in assembly onto the lower housing (4). The upper (2) and lower (4) housings, cover (6), blowouts (46) bias spring (30) and contact carrier (24) are keyed to allow only correct orientation relative to one another in assembly. An alternative version uses another leaf spring (48) between the lower housing (4) and the coil (32).
REFERENCES:
patent: 1801173 (1931-04-01), Petersen
patent: 2898427 (1959-08-01), Nadeau
patent: 3469215 (1969-09-01), Brovedan
patent: 3525961 (1970-08-01), Marien
patent: 3727157 (1973-04-01), Grunert et al.
patent: 4087770 (1978-05-01), Kuhn et al.
patent: 4525694 (1985-06-01), Dennison et al.
patent: 4544814 (1985-10-01), Butterworth et al.
Donovan Lincoln
Eaton Corporation
Goldberg E. A.
Vande Zande L. G.
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