Disk drive having a top cover channel vented to a central cavity via a hole through a bottom land

摘要

A disk drive has a disk drive base with a central cavity surrounded by a peripheral wall. The disk drive also includes a top cover attached to the disk drive base and disposed over the central cavity to define a disk drive enclosure. A disk is rotatably attached to the disk drive base within the central cavity, and is disposed within the disk drive enclosure. The top cover has a central top face that defines a central top face plane. A foil seal is adhered to the central top face. The central top face of the top cover includes a first channel that has a bottom land that is depressed towards the disk relative to the central top face plane, and the foil seal covers the first channel. The first channel is vented to the central cavity by a hole through the bottom land of the first channel.