Heat sink for a voice coil motor
US6181530A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1998 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Nov 13, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K3/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A bobbin for providing a heat sink for an actuator coil of a voice coil motor, the actuator coil having a plurality of windings arranged about a central aperture, the bobbin having a body member supported within the central aperture of the actuator coil. The body member has a plurality of fins which increase the surface area within the actuator coil to provide enhanced heat dissipation. The bobbin is formed from a thermally conductive, dielectric material to facilitate the dissipation of heat generated in response to the application of current to the actuator coil to reduce the operational temperature thereof while preventing detrimental eddy currents, thereby allowing an increased current flow to effectuate a decrease in seek time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.