JPH0346704B2 - - Google Patents
Info
- Publication number
- JPH0346704B2 JPH0346704B2 JP24477783A JP24477783A JPH0346704B2 JP H0346704 B2 JPH0346704 B2 JP H0346704B2 JP 24477783 A JP24477783 A JP 24477783A JP 24477783 A JP24477783 A JP 24477783A JP H0346704 B2 JPH0346704 B2 JP H0346704B2
- Authority
- JP
- Japan
- Prior art keywords
- valve body
- diameter
- piezoelectric element
- small
- accommodation space
- 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
Links
- 230000004308 accommodation Effects 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 description 4
- 229920002545 silicone oil Polymers 0.000 description 4
- 238000013459 approach Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/004—Actuating devices; Operating means; Releasing devices actuated by piezoelectric means
- F16K31/007—Piezoelectric stacks
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Description
【発明の詳細な説明】
本発明は圧電素子を利用した弁に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a valve using a piezoelectric element.
圧電素子は小型軽量でありながら分解能が高く
て応答速度が速く、しかも発生力が大きいので、
比較的に小型の弁における電気信号に基づいた弁
駆動部材として好適であるが、変位量が小さいと
いう欠点がある。そこで、これを解決するために
多数の圧電素子を積層して変位量を大きくした製
品も登場しているが、それでも弁を駆動するには
不充分である。 Piezoelectric elements are small and lightweight, yet have high resolution, fast response speed, and generate large force.
Although it is suitable as a valve driving member based on an electric signal in a relatively small valve, it has a drawback that the amount of displacement is small. In order to solve this problem, products have appeared in which a large number of piezoelectric elements are stacked to increase the amount of displacement, but this is still insufficient to drive the valve.
本発明は上記した点に着目して為されたもので
あり、圧電素子側に大径、弁体側に小径の圧力伝
達用媒体の収容スペースを連続して設け、もつて
圧電素子の変位量を該圧力伝達用媒体により増幅
して弁体に伝達するようにしたものである。 The present invention has been made with attention to the above-mentioned points, and a space for accommodating a pressure transmission medium having a large diameter on the piezoelectric element side and a small diameter on the valve body side is continuously provided, thereby reducing the amount of displacement of the piezoelectric element. The pressure is amplified by the pressure transmission medium and transmitted to the valve body.
以下本発明の実施例について説明する。 Examples of the present invention will be described below.
第１図において、弁本体１に一次口１ａと二次
口１ｂが形成されると共に両者の間に弁座１ｃが
形成され、二次口１ｂ側において、圧力伝達用媒
体としてのシリコンオイルＬの充満される小径の
収容スペースS2の下方においてニードル弁体２が
摺動自在に支持されている該弁座１ｃに接離す
る。ニードル弁体２と弁本体１間には開弁方向に
付勢するスプリング３が設けられる。 In FIG. 1, a primary port 1a and a secondary port 1b are formed in a valve body 1, and a valve seat 1c is formed between the two, and on the secondary port 1b side, silicone oil L as a pressure transmission medium is applied. The needle valve body 2 approaches and separates from the valve seat 1c , which is slidably supported below the filled small-diameter accommodation space S2. A spring 3 is provided between the needle valve body 2 and the valve body 1 to bias it in the valve opening direction.
上記収容スペースS2に連続して大径の収容スペ
ースS1が形成されると共に該スペースS1の上部に
ピストン４が設けられ、弁本体１の上端において
支持部材５により固定された圧電素子Ｅが該ピス
トン４に当接している。スペースS1，S2には圧力
伝達用媒体とてのシリコンオイルＬが充満され
る。６はＯリングである。 A large-diameter accommodation space S 1 is formed continuously from the accommodation space S 2 , and a piston 4 is provided in the upper part of the space S 1 , and a piezoelectric element E is fixed by a support member 5 at the upper end of the valve body 1 . is in contact with the piston 4. The spaces S 1 and S 2 are filled with silicone oil L as a pressure transmission medium. 6 is an O-ring.
上記構成において電極７より信号電圧が入力さ
れると圧電素子Ｅは該電圧に応じて変位し、その
変位量はシリコンオイルＬにより増幅されてニー
ドル弁体２に伝達される。 In the above configuration, when a signal voltage is input from the electrode 7, the piezoelectric element E is displaced in accordance with the voltage, and the amount of displacement is amplified by the silicone oil L and transmitted to the needle valve body 2.
この場合において、圧力伝達用媒体として弾性
に富んだゴム材を使用してもよく、これを用いる
場合には大径の収容スペースS1から小径の収容ス
ペースS2への移行部分をテーパー状に形成すれば
良い。 In this case, a highly elastic rubber material may be used as the pressure transmission medium, and if this is used, the transition part from the large diameter accommodation space S 1 to the small diameter accommodation space S 2 should be tapered. Just form it.
第２図の実施例においては、大径の収容スペー
スS1は大径のベローズB1により形成されると共
に小径の収容スペースS2は小径のベローズB2に
より形成され、両ベローズB1，B2の対向端は固
定リング部材１０に熔接されて支持され、大径の
ベローズB1の他端が圧電素子Ｅに結合されると
共に小径のベローズB2の自由端にニードル弁体
２′が固着され、弁本体１とベローズけB2の自由
端間に復帰用スプリング３′が設けられている。 In the embodiment of FIG. 2, the large-diameter accommodation space S 1 is formed by the large-diameter bellows B 1 and the small-diameter accommodation space S 2 is formed by the small-diameter bellows B 2 , and both bellows B 1 , B The opposing ends of the large-diameter bellows B1 are welded and supported by the fixed ring member 10, and the other end of the large-diameter bellows B1 is coupled to the piezoelectric element E, and the needle valve body 2 ' is fixed to the free end of the small-diameter bellows B2. A return spring 3' is provided between the valve body 1 and the free end of the bellows B2 .
この場合においては、圧電素子Ｅの動作により
大径のベローズB1が同程度縮少し、内部に充填
されたシリコンオイルにより小径のベローズB1
を軸方向に拡大しつつ伸長させてニードル弁２′
を駆動する。 In this case, the large-diameter bellows B 1 contracts to the same extent due to the operation of the piezoelectric element E, and the small-diameter bellows B 1 contracts due to the silicone oil filled inside.
The needle valve 2' is expanded and extended in the axial direction.
to drive.
本発明は上記した如くに成るものであるから、
圧電素子の動作を拡大して弁体に伝達し、この種
の弁体のストロークを大きくすることができる特
長を有する。 Since the present invention is constructed as described above,
It has the advantage of being able to magnify the movement of the piezoelectric element and transmitting it to the valve body, thereby increasing the stroke of this type of valve body.
第１図は本発明の一実施例についての断面図、
第２図は他の実施例についての断面図である。
２……弁体、Ｅ……圧電素子、S1……大径の収
容スペース、S2……小径の収容スペース、Ｌ……
圧力伝達用媒体。
FIG. 1 is a sectional view of an embodiment of the present invention;
FIG. 2 is a sectional view of another embodiment. 2...Valve body, E...Piezoelectric element, S1 ...Large diameter accommodation space, S2 ...Small diameter accommodation space, L...
Pressure transmission medium.
Claims (1)
容スペースと小径の収容スペースを連続して設け
ると共に該両収容スペースにわたつて圧力伝達用
媒体を充填し、該弁体の復帰用スプリングを設け
て成ることを特徴とする圧電素子を利用した弁。1. A large-diameter accommodation space and a small-diameter accommodation space are continuously provided between the valve body and the piezoelectric element from the piezoelectric element side, and a pressure transmission medium is filled across both accommodation spaces, and a spring for returning the valve body is provided. A valve using a piezoelectric element, characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24477783A JPS60139981A (en) | 1983-12-27 | 1983-12-27 | Valve using piezoelectric element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24477783A JPS60139981A (en) | 1983-12-27 | 1983-12-27 | Valve using piezoelectric element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60139981A JPS60139981A (en) | 1985-07-24 |
| JPH0346704B2 true JPH0346704B2 (en) | 1991-07-17 |
Family
ID=17123759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24477783A Granted JPS60139981A (en) | 1983-12-27 | 1983-12-27 | Valve using piezoelectric element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60139981A (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60211176A (en) * | 1984-04-04 | 1985-10-23 | Nec Corp | Valve |
| JPS60245885A (en) * | 1984-05-17 | 1985-12-05 | Tokico Ltd | flow control device |
| JPH0414646Y2 (en) * | 1985-10-25 | 1992-04-02 | ||
| JPH061110B2 (en) * | 1985-11-21 | 1994-01-05 | 山田 三恵 | Controller |
| JPS62106075U (en) * | 1985-12-24 | 1987-07-07 | ||
| JPH0419201Y2 (en) * | 1986-08-19 | 1992-04-30 | ||
| JPS63158301A (en) * | 1986-07-31 | 1988-07-01 | Toyota Motor Corp | Piezoelectric actuator |
| JPS63115977A (en) * | 1986-10-31 | 1988-05-20 | Sumitomo Special Metals Co Ltd | Actuator |
| JPH0236672U (en) * | 1988-09-02 | 1990-03-09 | ||
| DE10159749A1 (en) * | 2001-12-05 | 2003-06-12 | Bosch Gmbh Robert | Fuel injection valve for an internal combustion engine comprises a pressure space which contains a hydraulic fluid and, by means of sealing units, is separated from the actuator and fuel spaces |
| JP4225360B2 (en) * | 2007-07-02 | 2009-02-18 | ダイキン工業株式会社 | Refrigeration equipment |
| JP2009014030A (en) * | 2007-07-02 | 2009-01-22 | Daikin Ind Ltd | Electric valve and refrigeration system |
| CN109569955B (en) * | 2017-09-29 | 2021-10-08 | 精工爱普生株式会社 | Displacement amplifying mechanism and liquid ejecting device using the same |
-
1983
- 1983-12-27 JP JP24477783A patent/JPS60139981A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60139981A (en) | 1985-07-24 |
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