| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrasonic motor which removes a frequency in a natural vibration mode of a connection member from the vicinity of a drive frequency, and shows low noise and low vibration, and has large driving force.SOLUTION: An ultrasonic motor includes: a vibrator in which high frequency vibration is excited; a friction member which is brought into contact with the vibrator, and to which the vibrator relatively moves due to the high frequency vibration; a vibrator holder which indirectly holds the vibrator and moves in synchronization with the vibrator; a holding member which holds the vibrator; an elastic connection member which is provided at one point on one side with respect to the movement locus of a portion where the vibrator is fixed to the holding member and connects the holding member to the vibrator holder; and a guide member which guides the vibrator movably with respect to the normal direction of a surface where the vibrator and the friction member are brought into contact with each other and the movement direction of the vibrator, and restricts the vibrator so as not to be movable in a direction vertical to both of the normal direction and the movement direction. |
