Title: Actuator
Application Number: 200610108757 Application Date: 2006.08.10
Publication Number: 1913326 Publication Date: 2007.02.14
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H02N2/00;G02B7/04
Applicant(s) Name: Fujinon Corp. Address:
Inventor(s) Name: Sasaki Ryota
Attorney & Agent: li guiliang
Abstract:
    The invention provides a miniature actuator in which a plurality of driven members can be driven with common drive friction member and electromechanical conversion element. The actuator 34 comprises a piezoelectric element 42, a drive shaft 44 fixed to the displacement surface 42A of the piezoelectric element 42, coupling pieces 46 and 47 friction-engaged with the drive shaft 44, and presser springs 56 and 57 for biasing the coupling pieces 46 and 47 individually. The presser springs 56 and 57 are composed of a shape memory alloy and when they are heated by means of heaters 66 and 67, the presser springs 56 and 57 deform to regulate the biasing force individually.
Time: 11
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