| US 7,539,027 B2 | ||
| Force distributing spring element | ||
| Daniel Lyle Callahan, Nashua, N.H. (US); Raymond Joseph Iannuzzelli, Amherst, N.H. (US); S. Daniel Cromwell, Penryn, Calif. (US); James D. Hensley, Rocklin, Calif. (US); and Zoila Vega-Marchena, Austin, Tex. (US) | ||
| Assigned to Hewlett-Packard Development Company, L.P., Houston, Tex. (US) | ||
| Filed on Oct. 29, 2007, as Appl. No. 11/926,761. | ||
| Application 11/926761 is a continuation of application No. 10/615011, filed on Jul. 08, 2003, granted, now 7,289,335. | ||
| Prior Publication US 2008/0055870 A1, Mar. 06, 2008 | ||
| Int. Cl. H05K 1/11 (2006.01); H05K 1/14 (2006.01) | ||
| U.S. Cl. 361—803 [361/783; 361/785; 439/71; 439/331] | 7 Claims |
| 1. An assembled electronic component system comprising:
a land grid array module;
a printed circuit board having a first side and a second side;
an interposer disposed between the land grid array module and the first side of the printed circuit board;
a backing plate disposed on the second side of the printed circuit board opposite the first side of the printed circuit board,
wherein the entire backing plate is spaced apart by a fixed distance from the second side of the printed circuit board;
a plurality of posts extending through and connecting the module, the printed circuit board, the interposer, and the backing
plate relative to each other, wherein the posts are configured to maintain the fixed spacing between the backing plate and
the second side of the printed circuit board; and
a curved spring member disposed between the backing plate and the second side of the printed circuit board, wherein the curved
spring member is separate from and independent of the backing plate and arranged with a convexity of the curved spring member
facing the second side of the printed circuit board, wherein the curved spring member retains a generally curved shape in
the assembled state of the system, and wherein the curved spring member includes:
a central body portion in unsecured, direct pressing contact against the second side of the printed circuit board at a center
of the printed circuit board and biased to exert a compressive force against the center of the printed circuit board; and
an outer portion including a plurality of elongate leg members extending radially outward from the central body portion and
spaced from the second side of the printed circuit board in an assembled state of the system, each leg member including an
end defining an elongate hole that is slidably mounted on each of the respective posts in the assembled state of the system,
wherein the elongate hole is also configured to enable lateral slidable movement of the end of the leg member, both inwardly
and outwardly, relative to the respective posts while maintaining releasable contact of the ends of the leg members against
the backing plate.
|