Head driving device
US6058098A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 18, 1998 |
| Grant date | May 2, 2000 |
| Priority date | — |
| Expiry date | Feb 18, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B21/083
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The head driving device of the invention is provided with a head unit guided by a guide member, which is provided movably along a recording medium, a screw shaft provided along a moving direction of the head unit, a driving unit for giving a torque to the screw shaft, and a spirally engaging member supported by the head unit, which is spirally engaged with the screw shaft. In the this construction, the spirally engaging member is formed of a first engagement member supported by the head unit, which is engaged with the screw shaft, and a second engagement member engaged with the screw shaft at a position different from the position of the first engagement member, which keeps a relatively movable position with the first engagement member. Further the spirally engaging member is provided with an energizing member that gives suppression forces each having the opposite direction to the other in the axial direction of the screw shaft to the first engagement member and the second engagement member. With the head driving device thus constructed, the backlash generated between both the engagement members and the screw shaft will be absorbed without increasing the rotating load of the screw …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.