JP2003037983A - Displacement inversion type actuator device - Google Patents
Displacement inversion type actuator deviceInfo
- Publication number
- JP2003037983A JP2003037983A JP2001225289A JP2001225289A JP2003037983A JP 2003037983 A JP2003037983 A JP 2003037983A JP 2001225289 A JP2001225289 A JP 2001225289A JP 2001225289 A JP2001225289 A JP 2001225289A JP 2003037983 A JP2003037983 A JP 2003037983A
- Authority
- JP
- Japan
- Prior art keywords
- actuator device
- displacement
- actuator
- mounting portion
- type actuator
- 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.)
- Withdrawn
Links
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明はアクチュエータ装置
の構造に関するものである。
【０００２】
【従来の技術】従来、一端を固定したアクチュエータ素
子の固定点に対して伸びの方向とは反対の方向に変位を
取り出す機構を有するアクチュエータ装置の技術は特開
平１１−４６４８３や特願２００１−０１０７５９で示
されている。そこで駆動部に積層型圧電アクチュエータ
を用いたアクチュエータ装置を例に、図２（ａ）正面断
面図及び図２（ｂ）底面図を参照して説明する。
【０００３】積層型圧電アクチュエータ素子１１の両端
にホルダー１３及び取付部１４を配置し、更にホルダー
１３と取付部１４を円筒状のバネ材１２で積層型圧電ア
クチュエータ素子１１に荷重が加わるように接続する。
この時取付部１４の外周側面には取り付け用雄ネジ１８
を施している。次にホルダー１３に伝達材１６を固定し
取付部１４の切り欠き部２０を貫通させ皿バネ１９を挟
んで変位取り出し部１７を設ける。このように製作され
たアクチュエータ装置では、取付部の外周に施した雄ネ
ジにより外部機器に直接固定でき、高さも調整できるた
め、最大外径が小さく、取り付けが容易なアクチュエー
タ装置が得られる。また取付部４と変位取り出し部７の
間に設けた皿バネ９のバネ力で、アクチュエータに加え
ることの出来る圧力が大きいアクチュエータ装置が得ら
れる。
【０００４】
【発明が解決しようとする課題】上述した既存のアクチ
ュエータ装置で、外部機器に直接固定する場合、伝達材
１６を円周方向にスパナ等で回転させ雄ネジ１８を外部
機器に設けてある雌ネジにねじ込む工法を取る。
【０００５】従来は取付部１４の切り欠き２０の大きさ
は、伝達材棒１６が挿入できることのみを考慮して設計
されていたため、伝達材に伝えられた回転力はホルダー
１３、積層型圧電アクチュエータ１１の順に伝わって取
り付け部１４に到達する構造であり、この時取付部１４
と伝達材棒１６に固定されたホルダー１３との間に雄ネ
ジ１８に働く摩擦力のためにねじれ力が働き、その結果
素子１１にねじれの力が加わり素子１１が破損すること
が有ると言う欠点がある。
【０００６】本発明はこのような問題点を解決すべくな
されたもので、その技術的課題は一端を固定したアクチ
ュエータ素子の固定点に対して伸びの方向とは反対の方
向に変位を取り出す機構を有するアクチュエータ装置
で、外部機器に直接固定する場合、伝達材に円周方向に
回転力を加えても、内部の素子には大きなねじれの力が
加わらず、破損することがないアクチュエータ装置を提
供する事にある。
【０００７】
【課題を解決するための手段】本発明によればアクチュ
エータ装置の取付部の切り欠き部とそこを貫通する伝達
材の隙間を０．１ｍｍ以下にすることにより、伝達材に
円周方向に回転力を加えても、内部の素子に大きなねじ
れの力が加わらず素子が破損することなく容易に固定す
ることが出来るアクチュエータ装置が得られる。
【０００８】
【発明の実施の形態】以下に本発明の実施の形態に係る
アクチュエータ装置について図面を参照して詳細に説明
する。
【０００９】図１−（ａ）は本発明の一実施の形態に係
るアクチュエータ装置の基本構成（構造）を示した側面
断面図である。
【００１０】図１−（ｂ）は図１−（ａ）に示すアクチ
ュエータ装置の底面図であり、このようなアクチュエー
タ装置を作製する場合、先ず例えば寸法５ｍｍ×５ｍｍ
×６０ｍｍの積層型圧電アクチュエータ素子１の両端に
ホルダー３及び取付部４を配置し、更にホルダー３と取
付部４を内径１１ｍｍの円筒状のバネ材２（例えば厚さ
０．１５ｍｍ、内径１１ｍｍのステンレスパイプに５ｍ
ｍ間隔に絞りを入れて３００ｋｇ／ｍｍのバネ定数を持
たせたもの）で積層型圧電アクチュエータ素子１に約８
０Ｋｇ・ｆの荷重が加わるように接続する。この時取付
部４の外周側面には取り付け用雄ネジを施している。接
続の方法としては取付部４とバネ材２をろう付けし、ホ
ルダー３とバネ材２を抵抗溶接する場合を例示できる。
【００１１】次にホルダー３に伝達材６（例えば厚さ１
ｍｍ内径１８ｍｍのステンレスパイプ）を固定し取付部
４の切り欠き部１０を貫通させ弾性体（例えば皿バネ
９）を挟んで変位取り出し部７を設ける。このとき取付
部４の切り欠き部１０と伝達材６の円周方向の隙間２１
を０．０５ｍｍ以下となるよう切り欠き部１０と伝達材
６を勘合させておく。
【００１２】このように作製されたアクチュエータ装置
では、取付部４の切り欠き部１０と伝達材６の円周方向
の隙間を小さくしているため、外部機器に直接固定する
場合、伝達材に円周方向に回転力を加えても、内部の素
子には大きなねじれの力が加わらず素子が破損すること
が無く固定が容易なアクチュエータ装置が得られる。
【００１３】
【発明の効果】以上の説明からも明らかなように、本発
明によれば、アクチュエータ素子の変位方向に対し反対
方向に変位を取り出す機構を有するアクチュエータ装置
で、外部機器に直接固定する場合、伝達材に円周方向に
回転力を加えても、内部の素子には大きなねじれの力が
加わらず破損することがなく固定が容易なアクチュエー
タ装置が得られる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an actuator device. 2. Description of the Related Art Conventionally, an actuator device having a mechanism for taking out a displacement in a direction opposite to a direction of extension with respect to a fixing point of an actuator element having one end fixed is disclosed in Japanese Patent Application Laid-Open No. 2001-010759. Therefore, an actuator device using a laminated piezoelectric actuator for the drive unit will be described as an example with reference to FIG. 2A, a front sectional view, and FIG. 2B, a bottom view. A holder 13 and a mounting portion 14 are arranged at both ends of the laminated piezoelectric actuator element 11, and the holder 13 and the mounting portion 14 are connected by a cylindrical spring material 12 so that a load is applied to the laminated piezoelectric actuator element 11. I do.
At this time, a male screw 18 for mounting is provided on the outer peripheral side of the mounting portion 14.
Has been given. Next, the transmission member 16 is fixed to the holder 13, the cutout portion 20 of the mounting portion 14 is penetrated, and the displacement takeout portion 17 is provided with the disc spring 19 interposed therebetween. In the actuator device manufactured as described above, since the external device can be directly fixed to the external device by the external thread provided on the outer periphery of the mounting portion and the height can be adjusted, an actuator device having a small maximum outer diameter and easy mounting can be obtained. Further, an actuator device having a large pressure that can be applied to the actuator can be obtained by the spring force of the disc spring 9 provided between the mounting portion 4 and the displacement extracting portion 7. In the above-described existing actuator device, when directly fixing to an external device, the transmitting member 16 is rotated in a circumferential direction with a spanner or the like, and a male screw 18 is provided in the external device. Take the method of screwing into a female screw. Conventionally, the size of the notch 20 of the mounting portion 14 has been designed only in consideration of the fact that the transmitting material rod 16 can be inserted, so that the rotational force transmitted to the transmitting material is reduced by the holder 13 and the laminated piezoelectric actuator. 11 and reaches the mounting portion 14 at this time.
It is said that a torsional force acts due to the frictional force acting on the male screw 18 between the and the holder 13 fixed to the transmission member rod 16, and as a result, the element 11 is subjected to a torsional force and the element 11 may be damaged. There are drawbacks. The present invention has been made to solve such a problem, and a technical problem of the present invention is to provide a mechanism for taking out a displacement in a direction opposite to a direction of extension with respect to a fixed point of an actuator element having one end fixed. The present invention provides an actuator device that is not damaged even when a rotational force is applied to a transmission member in a circumferential direction when directly fixed to an external device. To do. According to the present invention, the gap between the notch portion of the mounting portion of the actuator device and the transmitting material penetrating therethrough is set to 0.1 mm or less, so that the transmitting material has a circumferential shape. Even when a rotational force is applied in the direction, a large torsional force is not applied to the internal element, and the actuator device can be easily fixed without damaging the element. An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1A is a side sectional view showing a basic configuration (structure) of an actuator device according to an embodiment of the present invention. FIG. 1B is a bottom view of the actuator device shown in FIG. 1A. When manufacturing such an actuator device, first, for example, a dimension of 5 mm × 5 mm
A holder 3 and a mounting portion 4 are arranged at both ends of a laminated piezoelectric actuator element 1 of × 60 mm, and the holder 3 and the mounting portion 4 are further combined with a cylindrical spring material 2 having an inner diameter of 11 mm (for example, a thickness of 0.15 mm and an inner diameter of 11 mm). 5m on stainless steel pipe
(with a spring constant of 300 kg / mm with an aperture drawn at m intervals)
Connection is made so that a load of 0 Kg · f is applied. At this time, a male screw for mounting is provided on the outer peripheral side surface of the mounting portion 4. Examples of the connection method include a case where the mounting portion 4 and the spring material 2 are brazed and the holder 3 and the spring material 2 are resistance-welded. Next, a transmission material 6 (for example, having a thickness of 1
A stainless steel pipe (18 mm in inner diameter) is fixed, and the cutout portion 10 of the mounting portion 4 is penetrated, and a displacement take-out portion 7 is provided with an elastic body (for example, a disc spring 9) interposed therebetween. At this time, the circumferential gap 21 between the notch portion 10 of the mounting portion 4 and the transmission member 6
The notch 10 and the transmission material 6 are fitted together so that the distance is 0.05 mm or less. In the actuator device manufactured as described above, the circumferential gap between the cutout portion 10 of the mounting portion 4 and the transmission member 6 is reduced. Even if a rotational force is applied in the circumferential direction, a large torsional force is not applied to the internal elements, so that an actuator device that can be easily fixed without damaging the elements can be obtained. As is apparent from the above description, according to the present invention, an actuator device having a mechanism for taking out a displacement in a direction opposite to a displacement direction of an actuator element is directly fixed to an external device. In this case, even if a rotational force is applied to the transmitting member in the circumferential direction, a large torsional force is not applied to the internal element, and the actuator device can be easily fixed without being damaged.
【図面の簡単な説明】
【図１】本発明の第一の実施例に係わるアクチュエータ
装置の構造を示した図で（ａ）は側面断面図、（ｂ）は
底面図である。
【図２】従来の一実施例に係わるアクチュエータ装置の
構造を示した図で（ａ）は側面断面図、（ｂ）は底面図
である。
【符号の説明】
１，１１ 積層型圧電アクチュエータ
２，１２ バネ材
３，１３ ホルダー
４，１４ 取付部
５，１５ 電圧印加端子
６，１６ 伝達材
７，１７ 変位取り出し部
８，１８ 雄ネジ
９，１９ 皿バネ
１０，２０ 切り欠き部
２１，２２ 円周方向の隙間BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a structure of an actuator device according to a first embodiment of the present invention, wherein (a) is a side sectional view and (b) is a bottom view. FIGS. 2A and 2B are views showing a structure of an actuator device according to a conventional example, wherein FIG. 2A is a side sectional view and FIG. 2B is a bottom view. [Description of Signs] 1,11 Multilayer piezoelectric actuator 2,12 Spring material 3,13 Holder 4,14 Mounting part 5,15 Voltage application terminal 6,16 Transmission material 7,17 Displacement take-out part 8,18 Male screw 9, 19 Disc springs 10, 20 Notches 21, 22 Crevice in circumferential direction
Claims (1)
定点に対して伸びの方向とは反対の方向に変位を取り出
す機構を有するアクチュエータ装置で、変位を伝える伝
達材と外部機器に取り付ける取付部に、雄ネジ或るいは
雌ネジの構造を有し、取付部の一部が切り欠かれ、伝達
材が前記切り欠き部を貫通しているアクチュエータ装置
において、伝達材と取付部の円周方向の隙間が０．１ｍ
ｍ以下で有ることを特徴とするアクチュエータ装置。Claims 1. An actuator device having a mechanism for taking out a displacement in a direction opposite to a direction of extension with respect to a fixed point of an actuator element having one end fixed, a transmission member for transmitting the displacement, and an external device. In an actuator device having a structure of a male screw or a female screw in a mounting portion to be mounted on the actuator device, a part of the mounting portion is cut out, and a transmission material penetrates the cutout portion. 0.1m in circumferential direction
m or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001225289A JP2003037983A (en) | 2001-07-26 | 2001-07-26 | Displacement inversion type actuator device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001225289A JP2003037983A (en) | 2001-07-26 | 2001-07-26 | Displacement inversion type actuator device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003037983A true JP2003037983A (en) | 2003-02-07 |
Family
ID=19058302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001225289A Withdrawn JP2003037983A (en) | 2001-07-26 | 2001-07-26 | Displacement inversion type actuator device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003037983A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017228574A (en) * | 2016-06-20 | 2017-12-28 | 京セラ株式会社 | Piezoelectric actuator |
| WO2021044744A1 (en) * | 2019-09-04 | 2021-03-11 | 京セラ株式会社 | Piezoelectric actuator |
-
2001
- 2001-07-26 JP JP2001225289A patent/JP2003037983A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017228574A (en) * | 2016-06-20 | 2017-12-28 | 京セラ株式会社 | Piezoelectric actuator |
| WO2021044744A1 (en) * | 2019-09-04 | 2021-03-11 | 京セラ株式会社 | Piezoelectric actuator |
| JPWO2021044744A1 (en) * | 2019-09-04 | 2021-03-11 | ||
| EP4027398A4 (en) * | 2019-09-04 | 2023-09-20 | Kyocera Corporation | Piezoelectric actuator |
| JP7354264B2 (en) | 2019-09-04 | 2023-10-02 | 京セラ株式会社 | piezoelectric actuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
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Free format text: JAPANESE INTERMEDIATE CODE: A712 Effective date: 20061220 |
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Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20071109 |
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