Card-type electronic device with plastic frame sandwiched betwee

Details Card-type electronic device with plastic frame sandwiched betwee Card-type electronic device with plastic frame sandwiched betwee

1997-07-09

1998-07-21

Picard, Leo P.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

361737, 361800, 361748, 361736, 439 60, H05K 114, H01R 909

Patent

active

057842590

ABSTRACT:
A card-type electronic device, such as a memory card, has a package structure in which a reduction in thickness is achieved while retaining the shielding effect and in which, if the device should be inserted incorrectly, no power source short-circuiting occurs without a mechanism for preventing incorrect insertion. The memory card 20 has a one-side-metal-plate type package structure and includes a plastic frame 11, a printed circuit board 12 which has a card contact edge section 14 for an input/output interface at an end thereof and on which semiconductor memory devices are mounted, and a metal panel 13. The plastic frame 11 is placed between the printed circuit board 12 and the metal plate 13. The distance D.sub.1, between the card end surface 11a on that side of the card where the card contact edge section 14 is provided and the end 13a of the metal panel 13 on the same side of the card is set at a value that is larger than the distance A between the card end surface 11a on that side of the card where the card contact edge section 14 is provided and the contact position 8a of contact springs 8 of a card connector 7. If the memory card 20 is inserted in the reverse direction from the correct insertion direction, the contact sections 8a do not reach the metal panel 13, so that they are not brought into contact with the metal panel 13.

REFERENCES:
patent: 5196994 (1993-03-01), Tanuma et al.
patent: 5244397 (1993-09-01), Anhalt
patent: 5319516 (1994-06-01), Perkins

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