Environmentally sealed grounding backshell with strain relief

Details Environmentally sealed grounding backshell with strain relief Environmentally sealed grounding backshell with strain relief

1990-04-26

1991-06-11

Desmond, Eugene F.

Electrical connectors

With vitreous-type envelope

Having bayonet-coupling contact

439 98, 439462, H01R 13648

Patent

active

RE0336114

ABSTRACT:
A grounding backshell assembly is provided for achieving a grounded electrical connection to a conductive braid of a cable, and for simultaneously achieving effective strain relief and environmental sealing. The backshell assembly comprises a generally cylindrical backshell having a toroidally configured coil spring mounted therein. A plunger with a leading concave cam surface is slidably inserted in the backshell for camming engagement with the grounding spring. A toroidally configured strain relief coil spring is disposed around the cable at the rear end of the plunger. A compression nut having a concave camming surface therein is threadably engageable with the backshell such that the concave cam surface thereof is operative to radially compress the strain relief spring and to urge the plunger into camming interengagement with the grounding spring. An elastomeric seal is resiliently engaged with the rear end of the compression nut and is further resiliently engaged with the cable. A tightening of the compression nut onto the backshell deforms the elastomeric seal into tight environmental sealing engagement with the cable and further contributes to environmental sealing.

REFERENCES:
patent: 3739076 (1973-06-01), Schwartz
patent: 3830957 (1974-08-01), Oberdiear
patent: 4213664 (1980-07-01), McClenan
patent: 4547623 (1985-10-01), Van Brunt

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