Waterproof switching device

Details Waterproof switching device Waterproof switching device

1989-07-07

1990-07-10

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Portable light

2003022, F21V 2304, H01H 904

Patent

active

049408607

ABSTRACT:
The present invention relates to a waterproof switching device for a portable electric appliance with a hollow body. The switching device comprises a switching body, a sealing member, a slideable button and a coupling ring, wherein the switching body includes two parts, the profiles of which are complementarily to each other, the switching body having a dimension which is slightly larger than that of the circumferential shell of the cavity of the hollow body of the portable electric appliance. The profile of the switching body is slightly converging in a longitudinal direction relative to an axis thereof. By virtue of forcing the converged end portion into the cavity of the hollow body, the switching body will be tightly snapped therein. A coupling ring may further be interposed between the switching body and the hollow body to strengthen the engagement of the switching body with the hollow body. With a more tight engagement between the switching body and the hollow body, the sealing member which is interposed therebetween can provide a better sealing to prevent the interior of the portable electric appliance from being wetted.

REFERENCES:
patent: 3924116 (1975-12-01), Brindley
patent: 3924117 (1975-12-01), Brindley
patent: 4286311 (1981-08-01), Maglica

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