Vibration generator
US6262500A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2000 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Mar 22, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K33/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vibration generator which is durable, provides strong thrust and is capable of being reduced in size, cost and weight includes a movable element (50) having a permanent magnet (60) attached thereto; a stationary element (10) having end faces (23), (25) which oppose, across prescribed gaps, respective ones of end faces (53), (54) of the movable element, with the stationary element being excited by passing a current through an attached coil (30) to form a magnetic path with the movable element; and resilient support members (80) for supporting the movable element so that the movable element can vibrate in a direction in which the stationary element is magnetized by the coil. One pole face of the permanent magnet is arranged to oppose the outer side of the coil, thereby forming a magnetic path in which magnetic flux that emerges from the pole face of the permanent magnet cuts across the outer peripheral side of the coil, penetrates the interior of the coil and then is guided in the direction of N and S poles of the coil. The end faces of the stationary element are excited to desired magnetic poles to thereby vibrate the movable element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.