Importance

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Abstract

A vibration wave driving apparatus includes a vibration member having an electro-mechanical energy conversion element and a vibration member supporting member fixed to an elastic member, each having a through-hole in the axial portion thereof; the apparatus further includes a rotary member in pressure contact with the vibration member and having a through-hole in the axial portion thereof, an output shaft extending through the through-holes of the vibration member and the rotary member, a case supporting the vibration member with the end portion of the vibration member supporting member fixed thereby, and a plurality of bearing for supporting the output shaft provided in the case. The vibration member and the rotary member are packaged, the output shaft is rotated with the rotary member, and the output shaft is supported relative to the through-hole of the vibration member at a position substantially corresponding to a node of a vibration generated in the vibration member within the through-hole of the vibration members.

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First Claim