Title:
形状記憶合金駆動装置
Document Type and Number:
Japanese Patent JP2011501245
Kind Code:
A
Abstract:
A shape memory alloy actuation apparatus comprises a movable element supported on a support structure by a suspension system comprising a plurality of resilient flexures. A shape memory alloy actuator drives movement of the movable element on contraction. An end-stop limits the movement of the movable element in the opposite direction. Rather than using the resilient flexures of the suspension system as the sole biassing means, an additional Massing element biasses the movable element against the SMA actuator. When the moveable element is held against the end-stop, the force applied by the biassing element is greater than the force applied by the flexures of the suspension system. This reduces the design constraints, for example allowing a greater range of movement.
Inventors:
Top squirrel, richard
Webber, dominic, george
Webber, dominic, george
Application Number:
JP2010531574A
Publication Date:
January 06, 2011
Filing Date:
October 28, 2008
Export Citation:
Assignee:
Cambridge Mechatronics Limited
International Classes:
G02B7/04; F03G7/06
Domestic Patent References:
| JP2007057581A | 2007-03-08 | |||
| JP2007047266A | 2007-02-22 | |||
| JP2007121852A | 2007-05-17 | |||
| JP2007078954A | 2007-03-29 | |||
| JP2007057581A | 2007-03-08 | |||
| JP2007047266A | 2007-02-22 | |||
| JP2007121852A | 2007-05-17 |
Foreign References:
| WO2006126545A1 | 2006-11-30 |
Attorney, Agent or Firm:
Hiroshi Kobayashi
Eiji Katayama
Norio Omori
Yasuhito Suzuki
Eiji Katayama
Norio Omori
Yasuhito Suzuki