US 11,716,827 B1
Server chassis deflection driven by cable tensioning
Ryan F Conroy, Seattle, WA (US); and Christopher Mario Gil, Tacoma, WA (US)
Assigned to Amazon Technologies, Inc., Seattle, WA (US)
Filed by Amazon Technologies, Inc., Seattle, WA (US)
Filed on Sep. 28, 2021, as Appl. No. 17/487,478.
Int. Cl. H05K 7/14 (2006.01)
CPC H05K 7/1489 (2013.01) [H05K 7/14 (2013.01); H05K 7/1485 (2013.01); H05K 7/1488 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A server rack assembly, the assembly comprising:
a server rack defining at least a lower volume, an upper volume, and a middle volume positioned vertically between and adjacent to each of the upper volume and the lower volume;
an upper server received in the upper volume;
a lower server received in the lower volume; and
a middle server received in the middle volume, the middle server comprising:
a chassis base having a support sheet, the support sheet pre-formed with a predetermined amount of upward pre-bend or pre-bow, the support sheet having a plurality of openings;
computing components supported by the support sheet so that the support sheet is subject to a weight load from the computing components;
a mechanical cable weaved through the plurality of openings and anchored at a first end; and
a tensioner coupled with a second end of the mechanical cable and operable to adjust tension in the mechanical cable so that the mechanical cable applies a force to the support sheet to supplement the weight load from the computing components and counteract the upward pre-bend or pre-bow by an amount configured to prevent the computing components from protruding into the upper volume and to prevent the chassis base from sagging into the lower volume.