Reduction gears-integrated actuator
US6701803B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2002 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | Apr 5, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A reduction gears-integrated actuator provided with harmonic reduction gears 14, a motor 7 and a rotation position detector 26, wherein a rotor 11 comprises a cup-shaped rotary yolk 12, a permanent magnet 13 is fixed to the outer periphery of the rotary yolk 12, a circular spline 15 is formed in a silk-hat shape, a flange portion 15a is fixed to one end of an actuator frame 2, and a cylinder portion 15b is disposed opposite to the inner periphery of the rotary yolk 12 via a space, and a cup-shaped housing 18 coupled with an output shaft 5 is disposed between the output shaft 5 and a rotating shaft 6 and on the inner peripheral side of a flexible spline 16, and a preloading elastic member 25 is provided between a rotary shaft 6-supporting bearing 21 and the housing, hence the axial-direction length of the actuator can be reduced, and a driving torque can be increased without compromise in reductions in size and weight, thereby providing a low-cost reduction gears-integrated actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.