Motor and apparatus using the same

Patent metadata

Field	Value
Publication number	US-10425019-B2
Application number	US-201715496590-A
Country	US
Kind code	B2
Filing date	Apr 25, 2017
Priority date	Apr 28, 2016
Publication date	Sep 24, 2019
Grant date	Sep 24, 2019

Abstract

A motor includes a first vibrator, a plurality of biasing parts that are disposed around the first vibrator and that presses the first vibrator onto a contacting member in contact with the first vibrator, a first pressing member that is biased by the plurality of biasing parts and that includes a pressing part pressing the first vibrator by biasing force of the plurality of biasing parts, and a second pressing member that is biased by the plurality of biasing parts. The first vibrator and the contacting member move relatively by vibrations that occur in the first vibrator. The first and second pressing members integrally moves while the first vibrator moves. The first pressing member and the first vibrator are tiltable around a first direction orthogonal to both of a moving direction of the first vibrator and a biasing direction of the plurality of biasing parts.

First claim

What is claimed is:

1. A motor comprising:
a first vibrator;
a contacting member;
a plurality of biasing parts that are arranged to press the first vibrator onto the contacting member in contact with the first vibrator;
a first pressing member that is biased by the plurality of biasing parts and that includes a pressing part arranged to press the first vibrator by the biasing force of the plurality of biasing parts; and
a second pressing member that is biased by the plurality of biasing parts,
wherein the first vibrator and the contacting member are arranged to move relatively by vibrations that occur in the first vibrator,
wherein the first and second pressing members are arranged to move integrally with the first vibrator while the first vibrator moves, and
wherein the first pressing member and the first vibrator are arranged to be tiltable around a first direction orthogonal to both of a moving direction of the first vibrator and a biasing direction of the plurality of biasing parts.

2. The motor according to claim 1 , wherein the pressing part is disposed in a plane of a first surface that is parallel to both of the first direction and the biasing direction and that symmetrically divides a facing area of the first vibrator facing the contacting member.

3. The motor according to claim 2 , wherein the first pressing member is arranged to be tiltable around a straight line that is orthogonal to a second surface, which is parallel to both of the moving direction and the biasing direction and symmetrically divides the facing area, and that is positioned in the plane of the first surface.

4. The motor according to claim 3 ,
wherein the pressing part is disposed in a plane of the second surface, and
wherein the first pressing member is arranged to be tiltable around a straight line that is orthogonal to the first surface and that is positioned in the plane of the second surface.

5. The motor according to claim 1 , further comprising a second vibrator contacting the contacting member on a rear side of a surface where the first vibrator contacts the contacting member,
wherein the second pressing member is arranged to press the second vibrator onto the contacting member by the biasing force of the plurality of biasing parts.

6. The motor according to claim 1 , wherein the plurality of biasing parts are each a coil spring.

7. The motor according to claim 1 , wherein the plurality of biasing parts are each a tension coil spring.

8. The motor according to claim 1 , wherein the first vibrator includes two driving protrusions that abut against the contacting member.

9. The motor according to claim 1 , wherein the first vibrator includes a vibration plate that contacts the contacting member, and a piezoelectric element that is arranged to excite vibration by being applied with a voltage.

10. An apparatus comprising:
a motor; and
a member that drives by driving force from the motor,
wherein the motor includes:
a first vibrator;
a contacting member;
a plurality of biasing parts that are arranged to press the first vibrator onto the contacting member in contact with the first vibrator;
a first pressing member that is biased by the plurality of biasing parts and that includes a pressing part arranged to press the first vibrator by the biasing force of the plurality of biasing parts; and
a second pressing member that is biased by the plurality of biasing parts,
wherein the first vibrator and the contacting member are arranged to move relatively by vibrations that occur in the first vibrator,
wherein the first and second pressing members are arranged to move integrally with the first vibrator while the first vibrator moves, and
wherein the first pressing member and the first vibrator are arranged to be tiltable around a first direction orthogonal to both of a moving direction of the first vibrator and a biasing direction of the plurality of biasing parts.

11. The apparatus according to claim 10 , wherein the apparatus is an optical apparatus including a lens.

12. The motor according to claim 1 , wherein the plurality of biasing parts are disposed around the first vibrator.

13. The apparatus according to claim 10 , wherein the plurality of biasing parts are disposed around the first vibrator.

14. A motor comprising:
a first vibrator;
a contacting member;
a plurality of biasing parts that are arranged to press the first vibrator onto the contacting member in contact with the first vibrator;
a first pressing member that is biased by the plurality of biasing parts and that is arranged to press the first vibrator by the biasing force of the plurality of biasing parts; and
a second pressing member that is biased by the plurality of biasing parts,
wherein the first vibrator and the contacting member are arranged to move relatively by vibrations that occur in the first vibrator, and
wherein the first vibrator is arranged to be tiltable around a first direction orthogonal to both of a moving direction of the first vibrator and a biasing direction of the plurality of biasing parts.

15. The motor according to claim 14 , wherein the first pressing member includes a pressing part arranged to press the first vibrator by the biasing force of the plurality of biasing parts.

16. The motor according to claim 14 , wherein the first and second pressing members are arranged to move integrally with the first vibrator while the first vibrator moves.

17. The motor according to claim 14 , wherein the first pressing member and the first vibrator are arranged to be tiltable around the first direction.

18. The motor according to claim 15 , wherein the pressing part is disposed in a plane of a first surface that is parallel to both of the first direction and the biasing direction and that symmetrically divides a facing area of the first vibrator facing the contacting member.

19. The motor according to claim 18 , wherein the first pressing member is arranged to be tiltable around a straight line that is orthogonal to a second surface, which is parallel to both of the moving direction and the biasing direction and symmetrically divides the facing area, and that is positioned in the plane of the first surface.

20. The motor according to claim 19 ,
wherein the pressing part is disposed in a plane of the second surface, and
wherein the first pressing member is arranged to be tiltable around a straight line that is orthogonal to the first surface and that is positioned in the plane of the second surface.

21. The motor according to claim 14 , further comprising a second vibrator contacting the contacting member on a rear side of a surface where the first vibrator contacts the contacting member,
wherein the second pressing member is arranged to press the second vibrator onto the contacting member by the biasing force of the plurality of biasing parts.

22. The motor according to claim 14 , wherein the plurality of biasing parts are each a coil spring.

23. The motor according to claim 14 , wherein the plurality of biasing parts are each a tension coil spring.

24. The motor according to claim 14 , wherein the first vibrator includes two driving protrusions that abut against the contacting member.

25. The motor according to claim 14 , wherein the first vibrator includes a vibration plate that contacts the contacting member, and a piezoelectric element that is arranged to excite vibration by being applied with a voltage.

Assignees

• Canon Kk

Inventors

• Noguchi Kazuhiro

Classifications

• H02N2/0055

  Supports for driving or driven bodies; Means for pressing driving body against driven body · CPC title

• H02N2/026 Primary

  by pressing one or more vibrators against the driven body · CPC title

• G02B7/08

  adapted to co-operate with a remote control mechanism · CPC title

• H02N2/003

  using longitudinal or radial modes combined with bending modes · CPC title

• G02B7/04

  with mechanism for focusing or varying magnification · CPC title