Electronic card with sheet metal and overmolded plastic frame parts

An electronic card for fitting into a card-receiving slot of an electronic device that has a grounding contact, comprising:

• a circuit board;
• top and bottom cover halves that include sheet metal portions with largely plate-like sheet metal parts that lie respectively above and below said circuit board, with said sheet metal portions being electrically connected together, with each cover half including a polymer frame part overmolded around edge portions of said sheet metal portions, with the polymer frame parts of said cover halves having joint surfaces that can abut one another to be sonically welded together to form a frame that has front and rear ends and opposite sides;
• said bottom sheet metal part includes an integral bottom tab that lies at and is exposed at a first of said sides of said frame to enable its engagement by said grounding contact of said electronic device, whereby to enable sonic welding of the cover halves while providing a side metal ground integral with the sheet metal of one of said cover halves.
• said polymer frame part of said bottom cover half includes an upstanding chimney that has inner and outer sides and a chimney top and said chimney supports said bottom tab and lies immediately outside said polymer frame part of said top cover half;
• said bottom tab has a free end portion that is bent around said chimney top, and said bottom tab free end portion has an end part that extends largely downward along said chimney inner side.

An electronic card compromising:

• top and bottom cover halves that each includes a sheet metal piece with a largely planar sheet metal plate having front, rear, and side plate edge portions with said sheet metal plates of said cover halves lying substantially in spaced parallel planes, with each cover half having a plastic frame part over-molded around said plate edge portions and with said top plastic frame part having a downwardly extending top column and with said bottom plastic frame part having on upwardly extending bottom column, with said columns forming abutting plastic joint surface that are sonically weldable together;
• said top sheet metal piece has a downwardly extending ear supported by said top column and said bottom sheet metal piece has an upwardly extending tab supported by said bottom column, and with said ear and tab engaging each other;
• said top and bottom cover halves have opposite sides with groundable regions;
• at said groundable regions, said bottom column has a chimney that extends upwardly and lies immediately outside said lower column, and said tab extends on the outside of said chimney.