| 摘要 |
A disc drive is disclosed which has a means for drawing a vacuum within the head disc assembly to reduce windage drag and reduce drive motor power consumption. The drive preferably has an internal air pump which includes an impeller disc fastened to the drive motor spindle within the head disc assembly and a stationary seal plate over the impeller disc which is fastened to the base plate and which prevents short cycling of the air. The base plate has a passage therethrough that communicates with an area adjacent a peripheral portion of the impeller disc. The impeller draws air from within the head disc assembly to the area adjacent the peripheral portion of the impeller disc and through the passage out of the head disc assembly to maintain a vacuum around the data storage disc within the head disc assembly during drive operation.
|
