Reduction gear transmission
US8382629B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 28, 2007 |
| Grant date | Feb 26, 2013 |
| Priority date | — |
| Expiry date | Jul 16, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H1/32
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A reduction gear transmission capable of realizing a large reduction ratio while preventing both an increase in its diameter and a decrease in the diameter of its through hole, including: a motor gear; an intermediate shaft; a first and second gear; an input shaft; and an external and internal gear. The first and second gears are fixed to the intermediate shaft. The first gear meshes with the motor gear. The input shaft causes an eccentric rotation member to rotate eccentrically with the rotation of the input gear, which meshes with the second gear. The external gear engages the eccentric rotation member, revolving orbitally around an axis line of the input shaft. The internal gear meshes with the external gear, each having a different number of teeth. The motor gear and first gear mesh at a position offset from a straight line formed by connecting an axis line of the intermediate shaft and of the input shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.