JP2014233191A5

JP2014233191A5 -

Info

Publication number: JP2014233191A5
Application number: JP2013114317A
Authority: JP
Filing date: 2013-05-30
Publication date: 2016-07-14
Anticipated expiration: 2033-05-30

Description

上記課題を解決するために、本発明に係る装置は、圧電素子を有する振動子と、前記振動子の第１の端部が固定された支持部材と、前記振動子にて前記第１の端部とは反対側の第２の端部に設けられた、前記振動子に対し相対的に移動する摩擦部材と接触する接触部と、を備え、前記接触部は、片持ち梁としての前記振動子の屈曲振動の腹およびねじり振動の腹に位置する。 In order to solve the above problems, an apparatus according to the present invention includes a vibrator having a piezoelectric element, a support member to which a first end portion of the vibrator is fixed, and the first end of the vibrator. the parts provided on a second end opposite and a contact portion for contacting a friction member to move relative to said transducer, said contact portion, the vibration of the cantilever Located on the child's flexural vibration and torsional vibration.

Claims

A vibrator having a piezoelectric element;
A support member to which a first end of the vibrator is fixed;
Wherein the first end at the vibrator provided on the second end opposite and a contact portion for contacting a friction member to move relative to said vibrator,
The vibration type actuator according to claim 1, wherein the contact portion is located on an antinode of bending vibration and an antinode of torsional vibration of the vibrator as a cantilever.

The vibration type actuator according to claim 1, wherein the piezoelectric element has a plurality of polarization region portions.

3. The vibration type actuator according to claim 1, wherein the vibrator has a structure in which the piezoelectric element is attached to a flat plate member.

4. The vibration type actuator according to claim 3, wherein the piezoelectric element has a two-phase polarization region divided in a width direction orthogonal to a longitudinal direction of the flat plate member.

5. The vibration type actuator according to claim 3, wherein the piezoelectric element is fixed to the support member by bonding or a fastening portion provided on the flat plate member.

3. The vibration type actuator according to claim 2, wherein the piezoelectric element has a four-phase polarization region portion that is divided into two in the width direction and the thickness direction perpendicular to the longitudinal direction. 4.

The vibration type actuator according to any one of claims 1 to 6, wherein the vibrator has a groove or a hole at a center position in a width direction orthogonal to the longitudinal direction.

The vibration type actuator according to claim 1, wherein the vibrator performs primary bending vibration and primary torsional vibration as a cantilever beam.

A base member for supporting the support member;
9. The vibration type actuator according to claim 1, further comprising a vibration damping member provided between the vibrator and the support member or between the support member and the base member.

The vibration type actuator according to claim 1, further comprising a biasing unit that biases the contact portion against the friction member.

The vibration type actuator according to claim 1, wherein the contact portion is in pressure contact with the friction member due to bending of the vibrator.

The vibration type actuator according to any one of claims 1 to 11,
A holding member for holding the friction member;
A movable member for holding the optical element;
The optical apparatus, wherein the movable member is connected to the holding member and is driven by movement of the friction member and the holding member.

The vibration type actuator according to any one of claims 1 to 11,
A movable member for holding the optical element;
The optical device is characterized in that the movable member is connected to the support member and driven by movement of the support member.