Patent ID: 8698375
Filing Date: 2014-04-15
Classification: H02N

Abstract:
1. A vibration wave driving apparatus comprising: a vibrator in which a first elastic body, a second elastic body and an electrical-mechanical energy converting element provided between the first and the second elastic bodies are arranged in a direction of a rotation axis; a rotor which performs a rotational motion due to the vibration excited to the first elastic body by applying a driving signal to the electrical-mechanical energy converting element; an output transmitter which rotates synchronously with the rotor; and a shaft which passes through the vibrator, the rotor and the output transmitter in the direction of the rotation axis, wherein the output transmitter has a fitting portion to which the shaft or a flange fixed to the shaft is fitted, wherein a portion of the fitting portion of the output transmitter and a portion of the first elastic body are overlapped in a direction perpendicular to the direction of the rotation axis, and wherein a portion of the first elastic body is positioned inside the output transmitter.