Snap-in means for mounting electrical devices or the like in a s

Details Snap-in means for mounting electrical devices or the like in a s Snap-in means for mounting electrical devices or the like in a s

1977-08-26

1978-09-05

Garbe, Stephen P.

Electricity: circuit makers and breakers

Electric switch details

Cases and bases

174153G, 248 271, 339126RS, 285321, H01H 902

Patent

active

041122828

ABSTRACT:
The snap-in mounting means includes a ring-like retainer member disposed in an annular groove provided near the outer end of an elongated bushing which extends from a switch frame member on a switch base of an electrical toggle switch assembly and pivotally supports a toggle lever for actuating switch contacts housed in the switch base. The retainer member is radially compressible and expandable in the bushing groove between a normally expanded position where its outer dimension is larger than the dimension of the mounting hole in a support panel on which a switch assembly is to be mounted and a compressed position where it can pass through the mounting hole.
As the bushing is initially inserted into the mounting hole from the rear of the panel during mounting, a portion of the retainer member engages the rim of the mounting hole and it is cammed thereby to the compressed position inside the groove. After the outer end portion of the bushing has been inserted through the mounting hole, the retainer member returns to its normally expanded position where a portion overlies the front of the panel in the area surrounding the mounting hole and is held in tight engagement therewith by a back-up spring.

REFERENCES:
patent: 2689700 (1954-09-01), Drury
patent: 3285548 (1966-11-01), Matto
patent: 3345085 (1967-10-01), Hanes
patent: 3711669 (1973-01-01), Keranen
patent: 3941969 (1976-03-01), Piber
patent: 3987265 (1976-10-01), Piber
patent: 4070559 (1978-01-01), Piber

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