Electric linear actuator
US8006579B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2009 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Nov 26, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18696
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Provided is an electric linear actuator advantageous in downsizing and weight reduction. The electric linear actuator includes: a housing; a motor held by the housing; a nut member rotatably held with respect to the housing; a screw shaft threadedly engaged with the nut member; a drive shaft directly coupled with the motor; a rotation transmitting member rotatably supported about the drive shaft; a rotary driven member fixed to the nut member and rotated in accordance with the rotation transmitting member; a clutch member to which rotation of the drive shaft is transmitted, and which is provided so as to freely advance and retract in an axial direction of the drive shaft, and in which meshing with the rotation transmitting member is effected at an engagement position, and meshing with the rotation transmitting member is cancelled at a retraction position; and a setting lever capable of setting the clutch member to one of the advance position and the retraction position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.