Flat type vibration motor
US8698366B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Feb 7, 2011 |
| Grant date | Apr 15, 2014 |
| Priority date | — |
| Expiry date | Aug 7, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B1/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A flat type vibration motor realizing strong fastening of a rotor frame and an eccentric weight without welding, that is, a flat type vibration motor provided with a cover case having a tubular part with an opening closed by a stator structure and supporting one end of a shaft and with a rotor frame supported to be able to rotate via a slide bearing through which the shaft runs and having an axial direction field-type rotary magnet and an eccentric weight, wherein the rotor frame has a disk part having a burring part into which a slide bearing is fitted and at least one rivet hole, while the eccentric weight has a covering part superposed over the disk part at the side opposite to the stator structure, at least one rivet which is inserted from the covering part through the rivet hole and have heads which are crushed at the stator structure side of the disk part, and an eave-shaped taper part hanging down from the covering part over the outer circumferential edge of the disk part to the stator structure side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.