Title:
VIBRATION WAVE MOTOR
Document Type and Number:
Japanese Patent JP2023159245
Kind Code:
A
Abstract:
To provide a vibration wave motor to obtain good vibration characteristics with a vibrator made by bonding a lead-free element and an elastic body.SOLUTION: A vibration wave motor has a bottom surface in contact with the element and a drive surface having a groove, and has an annular elastic body driving a mover by vibration waves generated on the drive surface due to displacement of the element, and when the density of the element is 4.2 to 6.0×103 kg/m3, the depth of the groove is T, the distance from the bottom portion of the groove to the bottom surface is B, and the width of the elastic body in a radial direction is W, the value of [(T/B)÷W] is in the range of 0.84 to 1.94.SELECTED DRAWING: Figure 7
Inventors:
ASHIZAWA TAKATOSHI
Application Number:
JP2023132232A
Publication Date:
October 31, 2023
Filing Date:
August 15, 2023
Export Citation:
Assignee:
NIKON CORP
International Classes:
H02N2/16; H02N2/12
Attorney, Agent or Firm:
Fujio Patent Attorneys Corporation
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