MOTION LIMITING COVER FOR DATA STORAGE DEVICE
Disclosed herein are embodiments of motion limiting cover features that improve coil/VCM coupled resonance. The features are flexible in that their position and configuration can be customized to specifically target a certain type of undesirable motion, such as undesirable twisting (i.e., torsion) and/or bending.
1 . A data storage device, comprising:
a housing that includes a top cover configured to be secured to a base deck, the top cover including a motion limiting feature configured to attenuate coil/VCM (voice coil motor) coupling resonance; and
a VCM positioned within a VCM region of the housing such that securing the top cover to the base deck positions the motion limiting feature over the VCM region.
2 . The data storage device of claim 1 , wherein the motion limiting feature is a rib.
3 . The data storage device of claim 2 , wherein the motion limiting feature is a rib that is stamped into the top cover.
4 . The data storage device of claim 2 , wherein the rib is positioned between two connector openings formed in the top cover.
5 . The data storage device of claim 1 , wherein the rib protrudes from a surface of the top cover so as to extend toward the VCM region when the top cover is secured to the base deck.
6 . The data storage device of claim 1 , wherein the motion limiting feature is a boss.
7 . The data storage device of claim 6 , wherein the motion limiting feature is a boss that is stamped into the top cover.
8 . The data storage device of claim 6 , wherein the boss is positioned closer to an outer perimeter of the top cover than to any connector opening formed within the top cover.
9 . The data storage device of claim 6 , wherein the boss protrudes from a surface of the top cover.
10 . The data storage device of claim 1 , wherein the motion limiting feature is a shim attached to a surface of the top cover.
11 . The data storage device of claim 10 , wherein the motion limiting feature is a metal shim.
12 . The data storage device of claim 10 , wherein the motion limiting feature is a rubber shim.
13 . The data storage device of claim 10 , wherein the shim is positioned closer to an outer perimeter of the top cover than to any connector opening formed within the top cover.
14 . The data storage device of claim 6 , wherein the shim protrudes from a surface of the top cover.
15 . The data storage device of claim 1 , wherein the motion limiting feature is a slot.
16 . The data storage device of claim 15 , wherein the slot is at least partially sealed.
17 . A top cover that is configured to be attached to a base deck so as to form a housing portion of a data storage device, wherein a motion limiting feature is formed within the top cover, the motion limiting feature being separate and distinct from any connector opening formed within the top cover, and wherein the motion limiting feature is configured to attenuate coil/VCM (voice coil motor) coupling resonance when the top cover is integrated into a fully functioning data storage device.
18 . The top cover of claim 17 , wherein the motion limiting feature is stamped into the top cover.
19 . A method of attenuating coil/VCM (voice coil motor) coupling resonance within an operating data storage device, the method comprising directly forming a motion limiting feature on a surface of a top cover the data storage device, the motion limiting feature being separate and distinct from any connector opening formed within the top cover.
20 . The method of claim 19 , wherein forming comprises stamping the motion limiting feature into the top cover.