Circuit board fastener

Details Circuit board fastener Circuit board fastener

1992-02-14

1993-08-24

Picard, Leo P.

Electricity: conductors and insulators

Conduits, cables or conductors

Preformed panel circuit arrangement

439 82, 439 84, H05K 100

Patent

active

052391353

ABSTRACT:
A press-in type fastener for mounting circuit board components or circuit boards to a chassis grips a through-hole in the circuit board by radial expansion of the shank. The fastener has a head and a shank with smooth parallel sides and a length substantially equivalent to, but greater than the thickness of the circuit board. The fastener includes a through-bore which is tapered in the area of the shank. After being loosely inserted into a pre-drilled circuit board mounting hole, the fastener is pressed between a punch and an opposing anvil which expands the fastener shank due to the axial compression of the fastener. The anvil has a substantially planar face which abuts the underside of the circuit board and, therefore, no part of the fastener protrudes through the opposite side of the board of the installation. The fastener may be headed and include teeth which extend axially from the underside of the fastener head for gripping the top side of the circuit board to provide torque resistance. The fastener through-bore preferably includes a threaded section in the region of the head.

REFERENCES:
patent: 3945703 (1976-03-01), McCormick
patent: 4402135 (1983-09-01), Schweingruber et al.
patent: 4792646 (1988-12-01), Enomoto

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