Method of mounting heat sinks

Details Method of mounting heat sinks Method of mounting heat sinks

1987-11-30

1988-11-15

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

295251, 403292, 411521, B23P 1902

Patent

active

047838990

ABSTRACT:
Disclosed is a compensating roll pin securing a heat sink to a circuit board. The roll pin comprises a deformable body of resilient material, such as annealed spring steel, formed into a generally cylindrical body having first and second end portions separated by a middle portion of enlarged external diameter and an axially extending gap in the surface of the body. A method of use is also disclosed wherein the first end portion of the roll pin is inserted into an aperture in a heat sink and the middle portion deformed within the aperture to form a tight fit between the pin and heat sink. A substantial part of the middle portion remains outside the aperture in the heat sink. The second end portion is inserted into a hole in a circuit board and forms an interference fit therewith. The middle portion forms a stop to prevent further insertion of the roll pin into the circuit board so that a gap of predetermined distance separates the heat sink and circuit board to enhance cooling.

REFERENCES:
patent: 3227030 (1966-01-01), Preziosi et al.
patent: 3233034 (1966-02-01), Grabbe
patent: 3557402 (1971-01-01), Koehl
patent: 3913444 (1975-10-01), Otte
patent: 4076356 (1978-02-01), Tamburro
patent: 4129934 (1978-12-01), Gettman
patent: 4321423 (1982-03-01), Johnson et al.
patent: 4403102 (1983-09-01), Jordan et al.
patent: 4489468 (1984-12-01), Straslicka

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