Torque limiting mechanism
US8105171B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 11, 2006 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Aug 25, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2023/123
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A high-precision torque limiting mechanism capable of limiting an output torque to a magnitude of not more than a prescribed value, as well as to reduce a frictional torque produced upon occurrence of a slip. To accomplish this object, a ball ramp section (13) is attached to a slip clutch section (3) for reducing friction between friction plates (31) and (32) forming the slip clutch section (3) and limiting a torque to be transmitted by utilizing an axial thrust produced at the ball ramp section (13) in accordance with the magnitude of an input torque. The precision with which the torque to be transmitted is limited is enhanced by making improvements to the shape of an internal side surface of a recess (G) formed in each of cam elements (131) and (132) of the ball ramp section (13).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.