Wireless microactuator motor assembly for use in a hard disk drive suspension, and mechanical and electrical connections thereto
US8189301B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 24, 2009 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Mar 19, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/42
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A microactuator assembly for a hard disk drive head suspension has an expandable base of stainless steel sheet material defining a negative lead affixed to the negative electrode on the bottom surface of a piezoelectric element, and a piece of stainless steel sheet material defining a positive lead attached to the positive electrode on the top surface of the piezoelectric element. The leads may be affixed directly to the piezoelectric element via conductive adhesive. The microactuator assembly can be assembled separately, and then laser welded into place on a suspension. A bond pad made of stainless steel sheet material extends from the flexible circuit, is electrically connected to the microactuator driving voltage conductor within the flexible circuit through a via, and is electrically isolated from the suspension substrate by an insulating film. The microactuator unit positive lead is mechanically and electrically connected to the bond pad via laser welding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.