Driving device and image forming apparatus including the driving device
US9121477B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2013 |
| Grant date | Sep 1, 2015 |
| Priority date | — |
| Expiry date | Aug 22, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/1657
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A driving device includes a drive source, a planetary gear decelerator, a drive-target shaft, a rotation speed detector, and a sensor mount. The planetary gear decelerator includes a planetary gear mechanism equipped with an output shaft, a sun gear, an outer gear, a plurality of planetary gears, and a rotatable first carrier. The outer gear is made of resin and includes a deformable portion at a drive target side, and the deformable portion is elastically deformable in a radial direction. The plurality of planetary gears engages the sun gear and the outer gear. The rotatable first carrier rotatably supports the planetary gears. The rotation speed detector detects a rotation speed of the planetary gear decelerator, and includes a sensor and a detection target disposed coaxially on the output shaft. The sensor mount supports the sensor and moves in the radial direction in accordance with elastic deformation of the outer gear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.