Vibration wave motor, drive control system, optical apparatus, and electronic apparatus
US-2019140558-A1 · May 9, 2019 · US
Vibration actuator, camera platform, and electronic apparatus
US11454869B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11454869-B2 |
| Application number | US-201916697663-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 27, 2019 |
| Priority date | Nov 30, 2018 |
| Publication date | Sep 27, 2022 |
| Grant date | Sep 27, 2022 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A vibration actuator includes a vibrator including an elastic body and an electro-mechanical energy conversion element; a contact body provided so as to be brought into contact with the vibrator; a flexible printed board configured to feed power to the electro-mechanical energy conversion element; and a temperature detection unit provided on a region of the flexible printed board, in which the flexible printed board and the electro-mechanical conversion element overlap each other.
First claim
Opening claim text (preview).
What is claimed is: 1. A vibration actuator comprising: a vibrator including an elastic body and an electro-mechanical energy conversion element; a contact body provided so as to be brought into contact with the vibrator; a flexible printed board configured to feed power to the electro-mechanical energy conversion element; and a temperature detection unit provided on a region of the flexible printed board, in which the flexible printed board and the electro-mechanical conversion element overlap each other, wherein the flexible printed board includes: a first terminal portion and a first wiring portion, which are to be connected to the electro-mechanical conversion element; and a second terminal portion and a second wiring portion, which are provided separately from the first terminal portion and the first wiring portion, and which are to be connected to the temperature detection unit. 2. The vibration actuator according to claim 1 , wherein the temperature detection unit comprises one of a thermistor, a thermocouple, a resistance temperature detector, and an IC temperature sensor. 3. The vibration actuator according to claim 1 , wherein the contact body, the elastic body, the electro-mechanical energy conversion element, and the flexible printed board are arranged in the stated order. 4. The vibration actuator according to claim 1 , wherein the elastic body has a rectangular shape. 5. The vibration actuator according to claim 4 , wherein a long-side direction of the temperature detection unit extends along a short-side direction of the elastic body having a rectangular shape. 6. A vibration actuator comprising: a vibrator including an elastic body and an electro-mechanical energy conversion element; a contact body provided so as to be brought into contact with the vibrator; a flexible printed board configured to feed power to the electro-mechanical energy conversion element; and a temperature detection unit provided on a region of the flexible printed board, in which the flexible printed board and the electro-mechanical conversion element overlap each other, wherein the elastic body has an annular shape. 7. The vibration actuator according to claim 6 , wherein a long-side direction of the temperature detection unit extends along a radial direction of the elastic body having the annular shape. 8. A vibration actuator comprising: a vibrator including an elastic body and an electro-mechanical energy conversion element; a contact body provided so as to be brought into contact with the vibrator; a flexible printed board configured to feed power to the electro-mechanical energy conversion element; and a temperature detection unit provided on a region of the flexible printed board, in which the flexible printed board and the electro-mechanical conversion element overlap each other, wherein a dimension of the temperature detection unit is equal to or less than one-quarter of a wavelength of a driving vibration. 9. A camera platform comprising: a vibration actuator including: a vibrator including an elastic body and an electro-mechanical energy conversion element; a contact body provided so as to be held in contact with the vibrator; a flexible printed board configured to feed power to the electro-mechanical energy conversion element; and a temperature detection unit provided on a region of the flexible printed board, in which the flexible printed board and the electro-mechanical conversion element overlap each other; and a rotating table on which the vibration actuator is provided. 10. An electronic apparatus comprising: a vibration actuator including: a vibrator including an elastic body and an electro-mechanical energy conversion element; a contact body provided so as to be held in contact with the vibrator; a flexible printed board configured to feed power to the electro-mechanical energy conversion element; and a temperature detection unit provided on a region of the flexible printed board, in which the flexible printed board and the electro-mechanical conversion element overlap each other; and a member to which the vibration actuator is provided, wherein the flexible printed board includes: a first terminal portion and a first wiring portion, which are to be connected to the electro-mechanical conversion element and a second terminal portion and a second wiring portion, which are provided separately from the first terminal portion and the first wiring portion, and which are to be connected to the temperature detection unit. 11. An electronic apparatus comprising: a vibration actuator including: a vibrator including an elastic body and an electro-mechanical energy conversion element; a contact body provided so as to be held in contact with the vibrator; a flexible printed board configured to feed power to the electro-mechanical energy conversion element; and a temperature detection unit provided on a region of the flexible printed board, in which the flexible printed board and the electro-mechanical conversion element overlap each other; and a member to which the vibration actuator is provided, wherein the elastic body has an annular shape. 12. An electronic apparatus comprising: a vibration actuator including: a vibrator including an elastic body and an electro-mechanical energy conversion element; a contact body provided so as to be held in contact with the vibrator; a flexible printed board configured to feed power to the electro-mechanical energy conversion element; and a temperature detection unit provided on a region of the flexible printed board, in which the flexible printed board and the electro-mechanical conversion element overlap each other; and a member to which the vibration actuator is provided, wherein a dimension of the temperature detection unit is equal to or less than one-quarter of a wavelength of a driving vibration.
Assignees
Inventors
Classifications
Thermal details, e.g. cooling means · CPC title
using piezoelectric actuators · CPC title
- G03B17/561Primary
Support related camera accessories · CPC title
by pressing one or more vibrators against the rotor · CPC title
Motors with ring stator · CPC title
Patent family
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Frequently asked questions
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- What does patent US11454869B2 cover?
- A vibration actuator includes a vibrator including an elastic body and an electro-mechanical energy conversion element; a contact body provided so as to be brought into contact with the vibrator; a flexible printed board configured to feed power to the electro-mechanical energy conversion element; and a temperature detection unit provided on a region of the flexible printed board, in which the …
- Who is the assignee on this patent?
- Canon Kk
- What technology area does this patent fall under?
- Primary CPC classification G03B17/561. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Sep 27 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).