JP4767726B2 - 超音波アクチュエータ - Google Patents
超音波アクチュエータ Download PDFInfo
- Publication number
- JP4767726B2 JP4767726B2 JP2006067669A JP2006067669A JP4767726B2 JP 4767726 B2 JP4767726 B2 JP 4767726B2 JP 2006067669 A JP2006067669 A JP 2006067669A JP 2006067669 A JP2006067669 A JP 2006067669A JP 4767726 B2 JP4767726 B2 JP 4767726B2
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- diaphragm
- vibration
- ultrasonic actuator
- vibrator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002184 metal Substances 0.000 claims description 5
- 238000005452 bending Methods 0.000 description 36
- 230000008602 contraction Effects 0.000 description 19
- 238000006073 displacement reaction Methods 0.000 description 19
- 238000010586 diagram Methods 0.000 description 11
- 238000003384 imaging method Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- 230000036316 preload Effects 0.000 description 5
- 238000013459 approach Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000001444 catalytic combustion detection Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
- H02N2/103—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors by pressing one or more vibrators against the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/0005—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing non-specific motion; Details common to machines covered by H02N2/02 - H02N2/16
- H02N2/001—Driving devices, e.g. vibrators
- H02N2/003—Driving devices, e.g. vibrators using longitudinal or radial modes combined with bending modes
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Description
ロータに一端が接し途中に折れ曲がった角部を有しさらに延在して他端側が固定された板状の振動子と、
振動子の、上記一端と上記角部との間の一部分に接触し、交流電圧の印加を受けて振動してその振動を振動子に伝える圧電素子とを備えたことを特徴とする。
11 圧電素子
12 弾性振動体
13 ロータ
14 支持部材
15 ばね
16 押当板
100 超音波アクチュエータ
110 圧電素子
111 電極
120 振動板
120a 角部
121 上足
122 下足
130 ロータ
Claims (4)
- 回転自在なロータに作用して該ロータを回転させる超音波アクチュエータにおいて、
前記ロータに一端が接し途中に折れ曲がった角部を有しさらに延在して他端側が固定された板状の振動子と、
前記振動子の、前記一端と前記角部との間の一部分に接触し、交流電圧の印加を受けて振動して該振動を前記振動子に伝える圧電素子とを備えたことを特徴とする超音波アクチュエータ。 - 前記圧電素子が、前記振動子の、前記一端と前記角部との間の一部分を挟んで複数設けられたことを特徴とする請求項1記載の超音波アクチュエータ。
- 前記振動子が金属板であって、複数の圧電素子それぞれの一方の電極を兼ねるものであることを特徴とする請求項2記載の超音波アクチュエータ。
- 前記振動子の、前記一端側の一部分が、該一部分を除く部分よりも狭幅に形成されてなることを特徴とする請求項1記載の超音波アクチュエータ。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006067669A JP4767726B2 (ja) | 2006-03-13 | 2006-03-13 | 超音波アクチュエータ |
US12/224,986 US7772744B2 (en) | 2006-03-13 | 2007-02-28 | Ultrasonic actuator which acts on a rotor to rotate the rotor |
PCT/JP2007/053808 WO2007105489A1 (ja) | 2006-03-13 | 2007-02-28 | 超音波アクチュエータ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006067669A JP4767726B2 (ja) | 2006-03-13 | 2006-03-13 | 超音波アクチュエータ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007252015A JP2007252015A (ja) | 2007-09-27 |
JP4767726B2 true JP4767726B2 (ja) | 2011-09-07 |
Family
ID=38509325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006067669A Expired - Fee Related JP4767726B2 (ja) | 2006-03-13 | 2006-03-13 | 超音波アクチュエータ |
Country Status (3)
Country | Link |
---|---|
US (1) | US7772744B2 (ja) |
JP (1) | JP4767726B2 (ja) |
WO (1) | WO2007105489A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9100562B2 (en) * | 2009-04-13 | 2015-08-04 | Massachusetts Institute Of Technology | Methods and apparatus for coordinated lens and sensor motion |
JP2011155761A (ja) * | 2010-01-27 | 2011-08-11 | Ishikawa Prefecture | 超音波モータ用振動子摩擦接触部材および超音波モータ用振動子 |
JP6011993B2 (ja) * | 2012-04-18 | 2016-10-25 | カシオ計算機株式会社 | 情報表示装置および電子時計 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5146129A (en) * | 1986-12-01 | 1992-09-08 | Canon Kabushiki Kaisha | Vibration wave motor |
US5204577A (en) * | 1989-05-15 | 1993-04-20 | Nikon Corporation | Ultrasonic motor improved in driving efficiency |
JPH05344765A (ja) * | 1992-06-11 | 1993-12-24 | Olympus Optical Co Ltd | 圧電モータおよびその駆動方法 |
KR100215989B1 (ko) * | 1994-11-07 | 1999-08-16 | 모리시타 요이찌 | 압전작동기 및 그것을 사용한 초전형적외선센서 |
JP2658930B2 (ja) * | 1994-12-27 | 1997-09-30 | 日本電気株式会社 | 圧電型回転駆動装置 |
US5561337A (en) * | 1995-04-13 | 1996-10-01 | Toda; Kohji | Ultrasonic vibrating actuator |
JP3434672B2 (ja) * | 1997-05-29 | 2003-08-11 | セイコーインスツルメンツ株式会社 | 小型回転式アクチュエータ及び小型回転式アクチュエータの共振周波数補正方法 |
JP3719061B2 (ja) * | 1999-03-15 | 2005-11-24 | セイコーエプソン株式会社 | 圧電アクチュエータ、時計および携帯機器 |
EP2568595A3 (en) | 1998-12-21 | 2013-05-15 | Seiko Epson Corporation | Piezoelectric actuator, timepiece, and portable device |
US6664714B2 (en) * | 2000-03-23 | 2003-12-16 | Elliptec Resonant Actuator Ag | Vibratory motors and methods of making and using same |
JP2003199371A (ja) | 2001-12-25 | 2003-07-11 | Japan Science & Technology Corp | 超音波モータ |
JP2004294580A (ja) | 2003-03-26 | 2004-10-21 | Fuji Photo Film Co Ltd | レンズ駆動装置 |
JP4192020B2 (ja) | 2003-03-27 | 2008-12-03 | 富士フイルム株式会社 | レンズ駆動装置 |
JP4565850B2 (ja) | 2004-01-28 | 2010-10-20 | 京セラ株式会社 | 超音波モータおよびレンズ装置 |
-
2006
- 2006-03-13 JP JP2006067669A patent/JP4767726B2/ja not_active Expired - Fee Related
-
2007
- 2007-02-28 WO PCT/JP2007/053808 patent/WO2007105489A1/ja active Application Filing
- 2007-02-28 US US12/224,986 patent/US7772744B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2007252015A (ja) | 2007-09-27 |
WO2007105489A1 (ja) | 2007-09-20 |
US20090072666A1 (en) | 2009-03-19 |
US7772744B2 (en) | 2010-08-10 |
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