Vibration wave driving device
AssigneeCanon Kabushiki Kaisha
InventorsHiroyuki Seki, Takayuki Tsukimoto
Life of this patent
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Abstract
A vibration wave driving device comprises a vibrator having an electromechanical conversion device, a supporting member for supporting the vibrator, and a driven member brought into contact with a part of the vibrator driven frictionally by vibration excited in the vibrator: the supporting member comprising a vibration portion vibrating together with the vibrator, a fixation portion for fixing the supporting member, and a support portion for connecting the vibration portion with the fixation portion and supporting the vibrator; and the support portion being comprised of a laminate of sheets.
Claims13
A vibration wave driving device comprising a vibrator having an electromechanical conversion device, a supporting member for supporting the vibrator, and a driven member brought into contact with a part of the vibrator driven frictionally by vibration excited in the vibrator:
- the supporting member comprising a vibration portion vibrating together with the vibrator, a fixation portion for fixing the supporting member, and a support portion for connecting the vibration portion with the fixation portion and supporting the vibrator;
- and
- the support portion being comprised of a laminate of sheets.
A vibration wave driving device having a vibrator constituted at least of a piezo-electric element and a contact member capable of causing an ellipsoidal movement by synthesis from stationary wave vibrations, and a supporting member for supporting the vibrator, for driving a driven member in contact with the contact member of the vibrator by ellipsoidal movement of the vibrator:
- wherein the vibration wave driving device has a vibration-preventing member attached to a node other than a support portion of the vibrator among the common nodes of a nodal circle or a nodal line of the plural stationary wave vibrations excited in the vibrator.
Dependencies are inferred from the claim text.