Electrical connectors – With coupling movement-actuating means or retaining means in... – For dual inline package
Patent
1992-03-06
1994-03-22
Howell, Daniel W.
Electrical connectors
With coupling movement-actuating means or retaining means in...
For dual inline package
439311, 324158F, H01R 1362
Patent
active
052958531
ABSTRACT:
A cam mechanism is provided in a DUT board mounting portion of a test head which includes a cam shaft having a guide pin connected to an actuator and a driven ring having a sloped groove along which the guide pin is guided, and a second guide pin provided on an outer cylindrical surface of the driven ring which is guided along a substantially L-shaped cam groove formed in a cylindrical opening of the DUT board mounting portion of the test head. When the second guide pin is located on a horizontal portion of the L-shaped cam groove, the driven ring is inhibited from moving downwardly but is rotated together with the cam shaft so that an engaging member of the driven ring is caused to engage with the DUT board. When the second guide pin reaches a vertical portion, only the cam shaft is rotated, and the driven ring moves downwardly along the vertical portion of the L-shaped groove to urge the DUT board assembly against contact probes on the test head assembly.
REFERENCES:
patent: 3960423 (1976-06-01), Weisenburger
patent: 4695258 (1987-09-01), Hanson et al.
patent: 4975639 (1990-12-01), Hiwada et al.
patent: 5051689 (1991-09-01), Hiwada et al.
patent: 5055779 (1991-10-01), Kershner et al.
patent: 5068601 (1991-11-01), Parmenter
"Dynamic Test System for High Speed Mixed Signal Devices", Kiyo Hiwada, et al., 1987 International Test Conference, Sep. 1-3, 1987, IEEE Catalog No. 87CH2347-2.
S. M. Jensen (card-to-board planar connector system; Feb. 1970, vol. 12, No. 9, pp. 1394 & 1395).
Nagakusa Keiichi
Saito Shin-ichi
Shiraishi Tetsuya
Tamura Takeshi
Hewlett--Packard Company
Howell Daniel W.
Vu Hien D.
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