Vibration wave motor, and driving apparatus having the same
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United States of America Patent
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-
Nov 15, 2022
Grant Date -
Sep 30, 2021
app pub date -
Mar 23, 2021
filing date -
Mar 26, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
A vibration wave motor includes a vibrator including a piezoelectric element and a vibratory plate, a friction member configured to make a frictional contact with the vibrator, a pressurizer configured to press the vibrator and the friction member against each other, and a guide unit configured to guide a relative movement between the vibrator and the friction member. The guide unit includes a plurality of rollers configured to move relative to the pressurizer, and a guide member that includes a guide portion, the guide portion being configured to extend along a relative movement direction between the vibrator and the friction member and to guide the plurality of rollers. The guide member includes a reinforcer configured to extend along the relative movement direction near a roller closest to a center position of a pressing force by the pressurizer.
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