Hermetically sealed disk drive with low height
US7428122B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2004 |
| Grant date | Sep 23, 2008 |
| Priority date | — |
| Expiry date | Jul 10, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/75
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An assembly structure low in height and suitable for downsizing and for high hermeticity sealing in a micro hard disk drive is provided. Burrings projecting toward a top cover and having an internal thread cut are formed on a base plate where the top cover is screw-fastened to the base plate, the base plate accommodating a functional unit such as a disk and a head. Burrings are formed extendedly upward on flat portions of recesses at certain corners of the top cover. These burrings have a diameter larger than that of the burrings of the base plate. The burrings of the base plate are fitted into the burrings to be screw-fastened with top cover fastening screws. After attaching the top cover to the base plate, a covering seal is applied to cover the respective top faces of the top cover, base plate, and the top cover screws.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.