Circuit board assembly for accurate insertion

Details Circuit board assembly for accurate insertion Circuit board assembly for accurate insertion

1985-06-17

1986-09-30

Weidenfeld, Gil

Geometrical instruments

339 65, 339 75MP, H01R 1362

Patent

active

046143890

ABSTRACT:
To provide accurate insertion of a circuit board into a high density socket in an equipment frame, a lever arrangement is mounted to the circuit board near its upper front edge on a pivot. Rotational force applied to a first lever arm causes a second arm to engage the frame, translating the rotational force to insertion force acting at the pivot. The combination of the acting insertion force and the insertion resisting force of the socket set up a moment couple. The moment couple tends to rotate the circuit board, forcing a reference surface on the board against a mating reference surface on the socket during insertion.
The lever arrangement also provides mechanical advantage for extraction and, by using the resilience of the board, latching. The lever also doubles as a faceplate to protect and beautify the equipment.

REFERENCES:
patent: 3008113 (1961-11-01), Johnson
patent: 3335386 (1967-08-01), Upton
patent: 3476258 (1969-11-01), Dorsett
patent: 3764857 (1973-10-01), Bartlett et al.
patent: 4233646 (1980-11-01), Leung et al.
patent: 4301494 (1981-11-01), Jordan
patent: 4417778 (1983-11-01), Halvorsen et al.
patent: 4477138 (1984-10-01), Andrews et al.

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