Back to results
US 9,871,468 B2Granted
Vibration-type driving device
AssigneeCanon Kabushiki Kaisha
InventorNobuyuki Kojima
Life of this patent
Estimating the term…
Abstract
A vibration-type driving device according to the present invention includes a plurality of vibrators in which contact portions perform an elliptical motion using a combination of vibrations in different vibration modes; and a driven object having contact regions that come into contact with the contact portions and move relative to the plurality of vibrators, wherein the contact regions for the individual vibrators differ in position so as not to overlap.
Claims18
A vibration-type driving device comprising:
- a first vibrator comprising a first vibration plate including a first contact portion and a first electro-mechanical energy conversion element joined to the first vibration plate;
- a second vibrator comprising a second vibration plate including a second contact portion and a second electro-mechanical energy conversion element joined to the second vibration plate;
- and
- a driven object comprising:
- a first contact region in contact with the first contact portion;
- and
- a second contact region in contact with the second contact portion,
- wherein the first and second vibrators and the driven object are configured to relatively rotate about a rotation axis,
- wherein a position of the first vibrator differs from a position of the second vibrator in a radial direction and a circumferential direction with respect to the rotation axis, and
- wherein the first contact region and the second contact region do not overlap with each other in the circumferential direction,
- wherein a distance between the first and the second contact regions in the radial direction is less than a sum of a distance between the first contact portion and an edge of the second contact region side of the first vibration plate in the radial direction and a distance between the second contact portion and an edge of the first contact region side of the second vibration plate in the radial direction.
8 more elements
A vibration-type driving device comprising:
- a first vibrator comprising a first vibration plate including a first contact portion and a first electro-mechanical energy conversion element being joined to the first vibration plate;
- a second vibrator comprising a second vibration plate including a second contact portion and a second electro-mechanical energy conversion element being joined to the second vibration plate;
- and
- a driven object comprising:
- a first contact region in contact with the first contact portion;
- and
- a second contact region in contact with the second contact portion,
- wherein the first and second vibrators and the driven object are configured to relatively move in a first direction of a linear movement,
- wherein a position of the first vibrator differs from a position of the second vibrator in the first direction and a second direction perpendicular to the linear movement direction, and
- wherein the first contact region and the second contact region do not overlap with each other in the first direction,
- wherein a distance between the first and the second contact regions in the second direction is less than a sum of a distacne between the first contact portion and an edge of the second contact region side of the first vibration plate in the second direction and a distance between the second contact portion and an edge of the first contact region side of the second vibration plate in the second direction.
8 more elements
Dependencies are inferred from the claim text.