Motor and apparatus using the same

Patent metadata

Field	Value
Publication number	US-10247902-B2
Application number	US-201715494854-A
Country	US
Kind code	B2
Filing date	Apr 24, 2017
Priority date	Apr 28, 2016
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

A motor includes a vibrator, a mover guided by a guide member to move with the vibrator, and rollers sandwiched between the mover and the guide member. The mover includes first and second groove shapes formed along a moving direction of the vibrator to separate from each other. The guide member includes first and second guide parts opposite to the first and second groove shapes, respectively. The rollers are sandwiched among the first and second groove shapes, and the first and second guide parts. On a rear side of a surface of the guide member where the first and second guide parts are formed, the mover includes regulating parts regulating a movement of the guide member to the rear side. When the guide member abuts against the regulating parts, part of each of the rolling balls is positioned inside the first and second groove shapes.

First claim

What is claimed is:

1. A motor comprising:
a vibrator;
a pressing member that presses the vibrator onto a contacting member in contact with the vibrator;
a moving member that moves integrally with the vibrator;
a guide member that includes a surface parallel to a contact surface of the contacting member with the vibrator and that guides a movement of the moving member; and
at least three or more rolling members that are sandwiched between the moving member and the guide member,
wherein the vibrator and the contacting member move relatively by vibration that occurs in the vibrator,
wherein the moving member includes at least two or more first groove shapes that separately formed on the same straight line parallel to a moving direction of the vibrator, and a second groove shape that formed in parallel with the moving direction to separate from the first groove shapes in a direction orthogonal to the moving direction,
wherein the guide member includes a first guide part that is opposite to the first groove shapes and that includes a surface having a predetermined angle with respect to the surface parallel to the contact surface, and a second guide part that is opposite to the second groove shape and that is parallel to the surface parallel to the contact surface,
wherein the rolling members are sandwiched between each of the first groove shapes and the first guide part and between the second groove shape and the second guide part,
wherein, on a rear side of a surface of the guide member where the first and second guide parts are formed, the moving member includes a plurality of regulating parts that regulate a movement of the guide member to the rear side, and
wherein, when the guide member abuts against the plurality of regulating parts, part of each of the rolling balls is positioned inside each of the first groove shapes or the second groove shape.

2. The motor according to claim 1 , wherein the guide member includes abutting parts that abut against the plurality of regulating parts.

3. The motor according to claim 2 , wherein a distance between each of the abutting parts and each of the plurality of regulating parts abutting the abutting parts is shorter than that from a design surface of the moving member to a position where the rolling members engage the first groove shapes and the second groove shape.

4. The motor according to claim 1 , wherein the pressing member is a plurality of biasing members disposed around the vibrator.

5. The motor according to claim 4 ,
wherein the moving member includes a plurality of engaging parts that each engage each of the plurality of biasing members, and
wherein the plurality of engaging parts are disposed to sandwich the first groove shapes and the second groove shape and to sandwich the first and second guide parts.

6. The motor according to claim 5 , wherein any one of the plurality of engaging parts is used for at least one of the plurality of regulation members uses.

7. The motor according to claim 1 ,
wherein the two first groove shapes and the one second groove shape are formed on the moving member, and
wherein the three rolling members are sandwiched between the guide member and the moving member.

8. The motor according to claim 1 , wherein a surface having a predetermined angle with respect to the surface parallel to the contact surface is formed along the moving direction on at least part of each of the first groove shapes and the second groove shape.

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

10. The motor according to claim 1 , wherein at least three rolling members receives reaction force of pressurization by the pressing member.

11. An apparatus comprising:
a motor; and
a member that drives by driving force from the motor,
wherein the motor includes:
a vibrator;
a pressing member that presses the vibrator onto a contacting member in contact with the vibrator;
a moving member that moves integrally with the vibrator;
a guide member that includes a surface parallel to a contact surface of the contacting member with the vibrator and that guides a movement of the moving member; and
at least three or more rolling members that are sandwiched between the moving member and the guide member,
wherein the vibrator and the contacting member move relatively by vibrations that occurs in the vibrator,
wherein the moving member includes at least two or more first groove shapes that separately formed on the same straight line parallel to a moving direction of the vibrator, and a second groove shape that formed in parallel with the moving direction to separate from the first groove shapes in a direction orthogonal to the moving direction,
wherein the guide member includes a first guide part that is opposite to the first groove shapes and that includes a surface having a predetermined angle with respect to the surface parallel to the contact surface, and a second guide part that is opposite to the second groove shape and that is parallel to the surface parallel to the contact surface,
wherein the rolling members are sandwiched between each of the first groove shapes and the first guide part and between the second groove shape and the second guide part,
wherein, on a rear side of a surface of the guide member where the first and second guide parts are formed, the moving member includes a plurality of regulating parts that regulate a movement of the guide member to the rear side, and
wherein, when the guide member abuts against the plurality of regulating parts, part of each of the rolling balls is positioned inside each of the first groove shapes or the second groove shape.

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

13. The motor according to claim 1 , further comprising:
a holding member that holds the vibrator,
wherein the motor is configured so that the holding member and the vibrator can roll around a first direction orthogonal to a moving direction of the moving member and a pressing direction of the pressing member.

14. The motor according to claim 13 ,
wherein the motor is configured so that the holding member and the vibrator can roll around a second direction parallel to the moving direction of the moving member.

15. A motor comprising:
a vibrator;
a contacting member that includes a contact surface in contact with the vibrator;
a pressing member that presses the vibrator onto the contacting member;
a moving member that moves integrally with the vibrator and that includes a plurality of first guide portions extending in a direction parallel to a moving direction of the moving member;
a guide member that includes a surface parallel to the contact surface and a plurality of second guide portions extending in the direction parallel to the moving direction of the moving member and that guides a movement of the moving member; and
at least three or more rolling members that are sandwiched between the first guide portions and the second guide portions,
wherein the vibrator and the contacting member move relatively by vibration that occurs in the vibrator,
wherein, on a rear side of a surface of the guide member where the second guide portions are formed, the moving member includes a plurality of regulating parts that regulate a movement of the guide member to the rear side, and
wherein, when the guide member abuts against the plurality of regulating parts, part of each of the rolling balls is positioned insid

Assignees

• Canon Kk

Inventors

• Noguchi Kazuhiro

Classifications

• G02B7/08

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

• H02N2/04

  Constructional details · CPC title

• H02N2/026

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

• G02B7/04 Primary

  with mechanism for focusing or varying magnification · CPC title

• H02N2/0055 Primary

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