Disk drive vibration/shock attenuation system and method

摘要

A mechanism and a method for damping shocks and vibrations between a drive tray and one or more media drives mounted within the drive tray are disclosed. The mechanism comprises one or more resilent layers disposed between the drive tray's housing and a drive module adapted to hold the media drive. Preferably, at least two of the resilient layers e positioned on opposite sides of the drive module to hold the drive module while avoiding a hard contact with the drive tray. A plurality of cover layers adjoin the plurality of resilient layers respectively. One or more plates having a resonant frequency outside an adverse frequency range for the media drive may be position within the drive module to engage the media drive. In operation, the plates convert internally and externally generated vibrations into a resonant vibration having a resonant frequency to which the media drive is relatively insensitive. Friction between the plates and shells that form the drive module's housing dissipate a portion of the resonant vibration as heat. The resonant vibration and any externally induced shock and vibrations are further dampened by the resilient layers.