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    • 10. 发明公开
    • DRIVE MECHANISM AND IMAGING DEVICE USING THE SAME
    • ANTRIEBSMECHANISMUS UND BILDGEBUNGSVORRICHTUNG DAMIT
    • EP2498392A1
    • 2012-09-12
    • EP10828065.2
    • 2010-10-21
    • Konica Minolta Advanced Layers, Inc.
    • ONISHI, SatoshiKONISHI, HirotoshiMORITA, Mitsuhiko
    • H02N2/00G02B7/04
    • H02N2/025G02B7/08
    • A drive mechanism and an imaging device according to the present invention each include: an ultrasonic linear actuator 4 provided with a rod 42 that moves reciprocally in response to expansion/contraction of a piezoelectric element 41; and a first group unit 2 serving as an example of a moving body that engages with the rod 42 with a prescribed frictional force. The moving body (first group unit 2) is provided with a holding member 24, a pressing member 30 or other member that engages with the rod 42 in such a way that fluctuation in the frictional force is suppressed, and drive performance is stabilized. As a consequence, the drive mechanism and the imaging device according to the present invention can suppress fluctuation in the frictional force (gripping force) of the moving body in the ultrasonic linear actuator 4, making it possible to stabilize drive performance.
    • 根据本发明的驱动机构和成像装置各自包括:超声波线性致动器4,其设置有响应于压电元件41的膨胀/收缩而往复运动的杆42; 作为与规定的摩擦力与杆42接合的移动体的一个例子的第一组单元2。 移动体(第一组单元2)设置有保持构件24,按压构件30或与杆42接合的其他构件,使得摩擦力的波动被抑制,并且驱动性能稳定。 结果,根据本发明的驱动机构和成像装置可以抑制超声波线性致动器4中的移动体的摩擦力(夹持力)的波动,使得可以稳定驱动性能。