Motor unit fitted with buffer mechanism
US6051901A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 1998 |
| Grant date | Apr 18, 2000 |
| Priority date | — |
| Expiry date | Sep 28, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/62
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor unit fitted with a buffer mechanism which absorbs the turning force of a motor when an output shaft of the motor stops due to an external load while the motor is operative and which can provide stable performance without causing biting between a worm and a worm wheel. The motor unit fitted with the buffer mechanism causes relative rotation between the output shaft and the worm wheel when the output shaft stops turning while the motor is operative. Springs and rubbers are provided in series or in parallel in a power transmission system within the worm wheel with respect to the direction of rotation of the worm wheel so as to function as buffer members by absorbing the turning force of the motor when the output shaft stops turning while the motor is operative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.