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    • 10. 发明授权
    • Ultrasonic motor and lens apparatus including the same
    • 超声波电动机和包括其的透镜装置
    • US09158083B2
    • 2015-10-13
    • US13611281
    • 2012-09-12
    • Makoto OikawaRyo Yamasaki
    • Makoto OikawaRyo Yamasaki
    • H02N2/00G02B7/02G02B7/12H02N2/10
    • H02N2/103B06B1/0644G02B7/02G02B7/04G02B7/12H02N2/0015H02N2/0055H02N2/12
    • An ultrasonic motor includes a member to be driven including a contact surface; a vibrator including at least one contact part and a piezoelectric element, the vibrator driving the member to be driven by an ultrasonic vibration excited by the piezoelectric element; a retention part for retaining the vibrator; and a pressurization unit including an elastic member so as to apply an impressing force on the at least one contact part against the member to be driven. The retention part includes an abutting part including a line contact part that receives the impressing force from the elastic member and comes into line contact with the pressurization unit; the abutting part has a shape formed of a part of a cylinder; and a center axis of the cylinder is parallel to the at least one contact part and perpendicular to a driving direction of the member to be driven.
    • 超声波马达包括:被驱动部件,包括接触面; 振动器,其包括至少一个接触部分和压电元件,所述振动器通过由所述压电元件激发的超声波振动驱动所述驱动部件; 用于保持振动器的保持部件; 以及加压单元,其包括弹性构件,以将压力施加在所述至少一个接触部分上抵靠待驱动的构件。 保持部包括抵接部,该抵接部包括:线接触部,其接收来自弹性部件的施加力并与加压部进行线接触; 所述抵接部具有由圆筒的一部分形成的形状; 并且所述气缸的中心轴平行于所述至少一个接触部分并且垂直于待驱动构件的驱动方向。