Electrical component with enclosure and method of manufacture th

Electricity: conductors and insulators – With fluids or vacuum – Boxes and housings

Patent

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Details

228110, 220367, 264 23, H05K 502

Patent

active

050793870

ABSTRACT:
A relay is enclosed between a cup-shaped cover and a plate. The cover includes a bottom and side walls. The interior circumference of the distal end of the side walls is notched a rim. A first flange is formed on the plate a distance from the edge of the plate that is smaller than the thickness of the rim. The height of the first flange is less than the length of the rim. A second flange extends from the first flange generally perpendicularly to the plate, sloping away from the outer circumference of the plate. As the cover is moved toward the plate, the second flange engages the inner surface of the wall and forces it outwards moving the rim toward the first flange. When the rim and first flange meet, ultrasound is applied. The rim and first flange melt at their point of contact and air is compressed in a pocket formed by the wall, rim, and second flange as the rim moves toward the plate, forcing the flash from the enclosure. Any flash which is not forced from the enclosure is trapped in the pocket. After installation of the assembly, a post may be broken away from the cover to expose a vent hole.

REFERENCES:
patent: 4375578 (1983-03-01), Mitchell et al.
patent: 4901135 (1990-02-01), Costigan
patent: 4975545 (1990-12-01), China et al.

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