Patent ID: 7256531
Filing Date: 2007-08-14
Classification: H02N

Abstract:
1. A driving apparatus, comprising a fixed member, an electromechanical transducer one end of which is fixed to the fixed member, and a driving friction member bonded to the other end of the electromechanical transducer, to move a movable unit which is slidably held by the driving friction member by expansion and contraction of the electromechanical transducer, said driving friction member including a section which is circularly arcuate in at least a part of a periphery, wherein: a bonded surface of the electromechanical transducer with respect to the driving friction member is included in a bonded surface of the driving friction member with respect to the electromechanical element, and a part of the electromechanical transducer including at least the bonded surface to the driving friction member is of a polygonal section circumscribed by the circularly arcuate periphery of the section of the driving friction member.