Vibration motor
US12191748B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2022 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Aug 5, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2203/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vibration motor is provided. The vibration motor comprises: a rotor shaft; a first magnet and a second magnet arranged on the rotor shaft so as to face each other; a circuit board having a hollow hole through which the rotor shaft passes and coils arranged thereon, the coils respectively facing the first and second magnets; a housing forming an inner space in which the rotor shaft and the circuit board are mounted; a shaft passing through the rotor shaft and fixedly erected in the housing; a first yoke and a second yoke on which the first and second magnets are respectively installed and which are fixedly coupled to the rotor shaft so as to integrally rotate along with the rotor shaft; a weight installed on the first yoke or the second yoke; and a bearing portion comprising a plurality of bearings coaxially arranged with the shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.