Hermetic electronic equipment with flexible diaphragm, fastened

Details Hermetic electronic equipment with flexible diaphragm, fastened Hermetic electronic equipment with flexible diaphragm, fastened

1994-07-22

1995-07-18

Phillips, Michael W.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

361739, 174 523, 220721, 277207R, H05K 0506

Patent

active

054347483

ABSTRACT:
An electronic circuit equipment including a substantially box-shaped case main body (10) for defining a sealed interior space therein and an electronic circuit board (11) having a plurality of electronic components (12) thereon. The case main body (10) comprises a case body (13) and a flat plate-shaped lid (17) positioned properly with respect to the case body (13) to seal the interior space. A vent hole (20) is formed in the bottom wall of the case body (13) for communicating the interior of the case body (13) with ambient atmosphere. A cover member is attached to the case body (13) to cover the vent hole hermetically. By using a cover member, the interior space of the case body (13) is sealed for protecting electronic components (12) on the electronic circuit board (11) from moisture and rainwater and, for absorbing a pressure fluctuation therein. A mounting flange extends from the case body and surrounds the vent hole. The cover member is a flexible diaphragm with a circumferential bulge. The flexible diaphragm is fastened to the mounting flange by a press-fit elastic U-shaped ring which presses the circumferential bulge against the mounting flange so as to form a hermetic seal.

REFERENCES:
patent: 4145588 (1979-03-01), Orcutt
patent: 4460102 (1984-07-01), Barringer
patent: 4474215 (1984-10-01), Richter et al.
patent: 4890764 (1990-01-01), Rossini
patent: 5001316 (1991-03-01), Salaman
German Office Action, File No. P 42 17 837.1-34, dated Apr. 23, 1993 with English Translation.
IBM Technical Disclosure Bulletin, "Chip Joining Both Sides of Substrates Simultaneously", C. T. Rogers, vol. 13, No. 2, p. 396, Jul., 1970.

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