PIEZOELECTRIC ULTRASONIC MOTOR, OPTICAL MEMBER DRIVING DEVICE, CAMERA DEVICE, AND ELECTRONIC APPARATUS

To provide a piezoelectric ultrasonic motor in which movement of a vibrator is less likely to be inhibited, and an optical member driving device, a camera device, and an electronic apparatus using the piezoelectric ultrasonic motor.SOLUTION: A piezoelectric ultrasonic motor 100 includes a columnar body 74, a driving shaft 71, and an FPC 72 on which a plurality of sheet-shaped piezoelectric elements 73a, 73b, 73c, and 73d are mounted. The columnar body 74 has two bottom portions 74e and 74f which are opposed to each other, and side surface portions 74a, 74b, 74c, and 74d surrounding an area between the two bottom portions 74e and 74f, and further has a through hole 74g penetrating between the two bottom portions 74e and 74f. The driving shaft 71 is inserted through the through hole 74g in the columnar body 74. The FPC 72 has an FPC main body portion 72a that is wound around the columnar body 74 with the plurality of piezoelectric elements 73a, 73b, 73c, and 73d being in contact with the side surface portions 74a, 74b, 74c, and 74d of the columnar body 74 so that a driving power can be supplied to the plurality of piezoelectric elements 73a, 73b, 73c, and 73d.SELECTED DRAWING: Figure 5 【課題】振動体の動きが阻害されにくい圧電超音波モータ、圧電超音波モータを利用した光学部材駆動装置、カメラ装置、及び電子機器を提供する。【解決手段】圧電超音波モータ１００は、柱状体７４と、駆動軸７１と、複数のシート状の圧電素子７３ａ、７３ｂ、７３ｃ及び７３ｄを搭載したＦＰＣ７２と、を有する。柱状体７４は、対向する２つの底面部７４ｅ及び７４ｆとこの２つの底面部７４ｅ、７４ｆ間の領域を囲む側面部７４ａ、７４ｂ、７４ｃ及び７４ｄを有し、２つの底面部７４ｅ及び７４ｆ間を貫く貫通孔７４ｇを有する。駆動軸７１は、柱状体７４の貫通孔７４ｇに挿通される。ＦＰＣ７２は、複数の圧電素子７３ａ、７３ｂ、７３ｃ及び７３ｄを柱状体７４の側面部７４ａ、７４ｂ、７４ｃ及び７４ｄに接触させて柱状体７４に巻かれるＦＰＣ本体部７２ａを有し、複数の圧電素子７３ａ、７３ｂ、７３ｃ及び７３ｄに駆動電力を供給することができる。【選択図】図５