JPH0224199Y2 - - Google Patents
Info
- Publication number
- JPH0224199Y2 JPH0224199Y2 JP1983171797U JP17179783U JPH0224199Y2 JP H0224199 Y2 JPH0224199 Y2 JP H0224199Y2 JP 1983171797 U JP1983171797 U JP 1983171797U JP 17179783 U JP17179783 U JP 17179783U JP H0224199 Y2 JPH0224199 Y2 JP H0224199Y2
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric
- movable
- pair
- movable body
- contact
- 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
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- 230000005489 elastic deformation Effects 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 description 18
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Description
【考案の詳細な説明】
〔考案の属する技術分野〕
本考案は、電圧の印加により歪を発生する圧電
素子を用いた圧電リレーに関する。特に、複数個
の圧電素子を積層して縦効果歪を増加させる積層
型圧電駆動体を接点開閉駆動源とする圧電リレー
に関する。[Detailed Description of the Invention] [Technical Field to Which the Invention Pertains] The present invention relates to a piezoelectric relay using a piezoelectric element that generates distortion when a voltage is applied. In particular, the present invention relates to a piezoelectric relay whose contact opening/closing drive source is a stacked piezoelectric drive body in which a plurality of piezoelectric elements are stacked to increase longitudinal effect strain.
第１図は従来例圧電リレー基本構成部の斜視
図、第２図は従来例圧電リレー動作説明側面図、
第３図は従来例圧電リレー可動接点移動量説明
図、第４図は従来例圧電リレー突起部変形説明図
である。
FIG. 1 is a perspective view of the basic components of a conventional piezoelectric relay, and FIG. 2 is a side view illustrating the operation of a conventional piezoelectric relay.
FIG. 3 is a diagram illustrating the amount of movement of a movable contact of a conventional piezoelectric relay, and FIG. 4 is a diagram illustrating a modification of a protrusion of a conventional piezoelectric relay.
従来の圧電リレーは第１図に示すように、ほぼ
水平面をなす可動体１０の一方の端部近くに圧電
駆動体１１の一端を固定するための固定突起１２
と、中央部分に圧電駆動体１１の他端を押さえる
ための駆動突起１３と、他方の端部先端に可動接
点１４とを備えて圧電リレーが構成されている。 As shown in FIG. 1, a conventional piezoelectric relay has a fixing protrusion 12 for fixing one end of a piezoelectric drive body 11 near one end of a movable body 10 forming a substantially horizontal surface.
A piezoelectric relay is constructed by including a drive protrusion 13 in the center portion for pressing the other end of the piezoelectric drive body 11, and a movable contact 14 at the tip of the other end.
圧電駆動体１１は縦軸方向を可動体１０と平行
に配置され、一端を可動体１０の固定突起１２に
接触して押上げ可能に配設されている。駆動突起
１３の位置と可動接点１４との距離は、電圧印加
により伸長する圧電駆動体１１の変位により可動
接点１４が、対向して設けられた固定接点１４ｂ
に移動し接触するために十分な長さを有してい
る。 The piezoelectric drive body 11 is disposed so that its vertical axis is parallel to the movable body 10, and one end thereof is placed in contact with the fixed protrusion 12 of the movable body 10 so that it can be pushed up. The distance between the position of the drive protrusion 13 and the movable contact 14 is determined by the displacement of the piezoelectric drive body 11 that expands when a voltage is applied, so that the movable contact 14 changes to the fixed contact 14b provided oppositely.
has sufficient length to move and make contact with the
次に第２図において、圧電駆動体１１が電圧印
加により縦方向に歪み、駆動突起１３を押上げた
ときは、可動体１０が駆動突起１３の根元Ａ点付
近でわん曲し、可動接点１４をＢ点からＣ点付近
に移動させる。もつとも第２図は説明をわかりや
すくするため変位角度を誇張して描いてある。 Next, in FIG. 2, when the piezoelectric drive body 11 is distorted in the vertical direction by voltage application and pushes up the drive protrusion 13, the movable body 10 is bent near the root point A of the drive protrusion 13, and the movable contact 14 is moved from point B to near point C. Of course, in FIG. 2, the displacement angle is exaggerated to make the explanation easier to understand.
第３図において、Ａ点からl1の距離でｘの歪を
生じたときは、Ａ−Ｂ間の長さl2によるＢ点から
Ｃ点への変位ｙは次式で与えられる。 In FIG. 3, when a distortion of x occurs at a distance l 1 from point A, the displacement y from point B to point C due to the length l 2 between A and B is given by the following equation.
ｙ＝（l2／l1）ｘ
つまり、圧電駆動体１１の歪量は、上式による
ほぼ（l2／l1）倍に拡大された可動接点１４の移
動行程が得られる。しかし、この従来の方法で
は、圧電駆動体１１が伸長したとき、可動体１０
に変位を伝えるべき固定突起１２および駆動突起
１３自身が第４図に示すようにわん曲変位して、
理論上の変位y0よりも実際の変位ｙが少なく、そ
のため十分に変位拡大の効果が発揮できない欠点
がある。また、可動体１０自身は、曲がりやすい
方が効率よく変位拡大するが、従来の方法では、
可動体１０の板厚は比較的厚く効果を発揮するの
に十分ではない。変位拡大が十分でないと、リレ
ーを構成した場合に接点ギヤツプおよび接点接触
力が小さくなり、高性能を要求する圧電リレーに
は使用できない問題が残されている。 y=(l 2 /l 1 )x In other words, the displacement of the movable contact 14 is obtained in which the amount of strain of the piezoelectric driver 11 is increased by approximately (l 2 /l 1 ) times according to the above equation. However, in this conventional method, when the piezoelectric drive body 11 is extended, the movable body 10
The fixed protrusion 12 and the driving protrusion 13 themselves, which should transmit displacement to the
The actual displacement y is smaller than the theoretical displacement y 0 , so there is a drawback that the effect of increasing displacement cannot be sufficiently exerted. In addition, the movable body 10 itself expands its displacement more efficiently when it bends easily, but in the conventional method,
The plate thickness of the movable body 10 is relatively thick and is not sufficient to be effective. If the displacement expansion is not sufficient, the contact gap and contact force will be small when a relay is constructed, and the problem remains that it cannot be used in piezoelectric relays that require high performance.
本考案は、この欠点を改良するもので、圧電駆
動体の伸長が効率的に接点変位に伝達することが
できる圧電リレーを提供することを目的とする。
The present invention aims to improve this drawback and provide a piezoelectric relay in which the elongation of the piezoelectric driving body can be efficiently transmitted to the displacement of the contact point.
本考案は、可動体の固定端と、圧電駆動体を係
合させる可動端の少なくとも一つを肉厚に形成
し、この両者間に渡る可動体を薄く形成すること
により、突起部のわん曲変位をなくし、変位精度
を高め、十分な接点ギヤツプと接点接触力を得る
ことを特徴とする。
In the present invention, at least one of the fixed end of the movable body and the movable end that engages the piezoelectric drive body is formed thick, and the movable body that spans between the two is formed thin, thereby reducing the curvature of the protrusion. It is characterized by eliminating displacement, increasing displacement accuracy, and obtaining sufficient contact gap and contact force.
すなわち、本考案は、複数個の圧電素子をこれ
らの相互間に各内部電極が位置するように一体に
積層し、電界によりこれら圧電素子が積層方向に
機械的歪を生じる圧電駆動体と、一方の端部を固
定端とし、他端が対向して配置された固定接点部
と接触または開離する可動接点を有する可動端
と、上記圧電駆動体の伸長に応じて反りが与えら
れる可動体とを備え、上記圧電駆動体の積層方向
と上記可動体の伸長方向とを一致させ、上記圧電
駆動体を上記固定端の支持面に係合させて並置し
た圧電リレーにおいて、上記固定端および可動端
の少なくとも一つの突起部を肉厚に形成した固定
端および可動端と、この固定端および可動端を一
体に結ぶ可動体と、上記圧電駆動体とにより構成
され、変位精度を高め、十分な接点ギヤツプと接
点接触力を得ることを特徴とするものである。 That is, the present invention has a piezoelectric drive body in which a plurality of piezoelectric elements are integrally stacked such that each internal electrode is located between them, and the piezoelectric elements are mechanically strained in the stacking direction by an electric field; a movable end having one end as a fixed end and the other end having a movable contact that comes into contact with or separates from a fixed contact portion disposed oppositely, and a movable body that is warped in accordance with the expansion of the piezoelectric drive body. In the piezoelectric relay, the stacking direction of the piezoelectric drive body is aligned with the extension direction of the movable body, and the piezoelectric drive body is engaged with a support surface of the fixed end and juxtaposed, the fixed end and the movable end It consists of a fixed end and a movable end that have at least one thick projection, a movable body that connects the fixed end and the movable end together, and the piezoelectric drive body, which increases displacement accuracy and provides sufficient contact points. It is characterized by obtaining gap and contact force.
また、本考案は、上記可動体の少なくとも一箇
所に切欠きを設け、さらに、上記固定端と可動端
とを独立して形成し、両者間に板バネを設置して
構成することができる。 Further, the present invention can be configured by providing a notch in at least one location of the movable body, and further forming the fixed end and the movable end independently, and installing a leaf spring between them.
次に、本考案の実施例について図面を参照して
説明する。
Next, embodiments of the present invention will be described with reference to the drawings.
第５図は本考案第一実施例圧電リレー基本構成
部の斜視図、第６図および第７図は本考案第一実
施例圧電リレー動作説明側面図、第８図は本考案
第一実施例可動体変位説明図、第９図は本考案第
二実施例圧電リレー基本構成部の斜視図、第１０
図は本考案第三実施例基本構成部の斜視図であ
る。 Figure 5 is a perspective view of the basic components of the piezoelectric relay according to the first embodiment of the present invention, Figures 6 and 7 are side views explaining the operation of the piezoelectric relay according to the first embodiment of the present invention, and Figure 8 is the first embodiment of the present invention. FIG. 9 is a perspective view of the basic components of the piezoelectric relay according to the second embodiment of the present invention; FIG.
The figure is a perspective view of the basic components of the third embodiment of the present invention.
本考案第一実施例圧電リレーは、第５図に示す
ように、可動体１０ｓの両端に固定端１０ｆと可
動端１０ｖとを有して形成され、圧電駆動体１１
は上記固定端１０ｆと可動端１０ｖ間に挟持さ
れ、この圧電駆動体１１の両端部は、固定端１０
ｆ側では固着され、可動端１０ｖ側では、可動端
１０ｖを押上げ可能に係合されている。可動接点
１４は可動端１０ｖの他端部に固着されている。 As shown in FIG. 5, the piezoelectric relay according to the first embodiment of the present invention has a fixed end 10f and a movable end 10v at both ends of a movable body 10s, and a piezoelectric drive body 11.
is held between the fixed end 10f and the movable end 10v, and both ends of the piezoelectric drive body 11 are connected to the fixed end 10f.
It is fixed on the f side, and engaged on the movable end 10v side so as to be able to push up the movable end 10v. The movable contact 14 is fixed to the other end of the movable end 10v.
このように構成された本考案第一実施例圧電リ
レーの動作について説明する。第６図は圧電駆動
体１１への入力電圧印加前を示したもので、第７
図は電圧印加後の状態を示したものである。第６
図において、入力電圧印加前では、可動接点１４
は固定接点１４ｂに接触しているが、圧電駆動体
１１に電圧が印加されると、圧電駆動体１１はｘ
だけ伸長して可動端１０ｖを押し上げる。このと
き、可動体１０ｓはＡ点付近でわん曲し、可動端
１０ｖは、第７図に示すようにＡ点付近を中心に
時計回りの方向に曲げられて、可動接点１４は固
定接点１４ｂを開離し、対向した固定接点１４ｍ
側に閉成し接触する。 The operation of the piezoelectric relay according to the first embodiment of the present invention constructed as described above will be explained. FIG. 6 shows the state before the input voltage is applied to the piezoelectric drive body 11, and the seventh
The figure shows the state after voltage application. 6th
In the figure, before the input voltage is applied, the movable contact 14
is in contact with the fixed contact 14b, but when a voltage is applied to the piezoelectric driver 11, the piezoelectric driver 11
10v to push up the movable end 10v. At this time, the movable body 10s is bent near point A, the movable end 10v is bent clockwise around point A as shown in FIG. Fixed contacts 14m apart and facing each other
close to the side and make contact.
電圧を除去すれば、圧電駆動体１１は元の長さ
まで収縮し、可動端１０ｖは第６図の状態に戻
る。このとき、可動接点１４の変位距離ｙは第８
図から次式で与えられる。 When the voltage is removed, the piezoelectric drive body 11 contracts to its original length, and the movable end 10v returns to the state shown in FIG. 6. At this time, the displacement distance y of the movable contact 14 is the eighth
From the figure, it is given by the following formula.
ｙ＝（l2／l1）ｘ
固定端１０ｆおよび可動端１０ｖは、圧電駆動
体１１の伸長方向にこの圧電駆動体１１の発生す
る力によつてそれ自体が変位しないように十分な
厚さを持つているので、第４図に示したような、
固定突起１２および駆動突起１３のわん曲変位に
よつて本来の変位が出なくなる欠点は解決され
る。 y=(l 2 /l 1 )x The fixed end 10f and the movable end 10v have sufficient thickness so that they are not displaced by the force generated by the piezoelectric driver 11 in the direction in which the piezoelectric driver 11 extends. As shown in Figure 4,
The disadvantage that the fixed protrusion 12 and the driving protrusion 13 cannot be displaced as intended due to the curved displacement is solved.
第９図および第１０図は、本考案による第二お
よび第三実施例圧電リレーの基本構成部の斜視図
である。第９図に示す第二実施例圧電リレーは、
第５図と同様に固定端１０ｆ、可動端１０ｖおよ
び可動体１０ｓによつて構成され、上記可動体１
０ｓの一部を削りとり切欠き１０ｚを有してい
る。圧電駆動体１１の伸長時に、可動端１０ｖを
押し上げると、前記切欠き１０ｚの個所で曲がり
やすくなつているため、可動体１０ｓをわん曲さ
せるに必要なエネルギーを最少限にすることがで
き、圧電駆動体１１の持つているエネルギーを有
効に利用できる。この第９図に示す切欠き１０ｚ
は、可動体１０ｓの厚さ方向に切欠いているが、
幅方向に切欠いてもよく、また位置、形状、個数
についても任意である。 9 and 10 are perspective views of the basic components of piezoelectric relays according to second and third embodiments of the present invention. The second embodiment piezoelectric relay shown in FIG.
Similar to FIG. 5, it is composed of a fixed end 10f, a movable end 10v, and a movable body 10s, and
A part of 0s is removed to form a notch 10z. When the movable end 10v is pushed up when the piezoelectric drive body 11 is extended, it bends easily at the notch 10z, so the energy required to bend the movable body 10s can be minimized, and the piezoelectric The energy possessed by the driving body 11 can be used effectively. Notch 10z shown in FIG.
is notched in the thickness direction of the movable body 10s,
The notches may be cut out in the width direction, and the position, shape, and number are also arbitrary.
次に第１０図を参照して第三実施例を説明す
る。固定端１０ｆと可動端１０ｖは完全に独立し
て形成され、固定端１０ｆに設けた可動体１０ｓ
と、可動端１０ｖの対向する可動端端面部１０ｂ
間に板ばね２０が設置されている。板ばね２０
は、第９図における切欠き１０ｚと同様の効果を
発揮することができる。板ばね２０の形状、板
厚、設置箇所は任意であり、また、第１０図にお
いて、板ばね２０の設置用の可動体１０ｓは、固
定端１０ｆ側に設けたが、可動端１０ｖ側に設け
るか、またその双方に設けることもできる。 Next, a third embodiment will be described with reference to FIG. The fixed end 10f and the movable end 10v are formed completely independently, and the movable body 10s provided at the fixed end 10f
and the opposing movable end end surface portion 10b of the movable end 10v.
A leaf spring 20 is installed between them. Leaf spring 20
can exhibit the same effect as the notch 10z in FIG. 9. The shape, plate thickness, and installation location of the leaf spring 20 are arbitrary, and in FIG. 10, the movable body 10s for installing the leaf spring 20 is provided on the fixed end 10f side, but it may be provided on the movable end 10v side. Alternatively, it can be provided on both sides.
以上説明したように本考案によれば、圧電駆動
体の端部を挟持する可動体の固定端および可動端
を肉厚に形成して、形状可変の薄板状の部分を設
けることにより、圧電駆動体の発生する変位と
力、あるいはエネルギーを有効に利用し、所望の
接点ギヤツプおよび接点接触力を得ることができ
る優れた効果がある。
As explained above, according to the present invention, the fixed end and the movable end of the movable body that sandwich the end of the piezoelectric drive body are formed thickly, and a thin plate-like portion whose shape is variable is provided, thereby making it possible to drive the piezoelectric drive body. It has the excellent effect of effectively utilizing the displacement, force, or energy generated by the body to obtain the desired contact gap and contact force.
第１図は従来例圧電リレー基本構成部の斜視
図。第２図は従来例圧電リレー動作説明側面図。
第３図は従来例圧電リレー可動接点移動量説明
図。第４図は従来例圧電リレー突起部変形説明
図。第５図は本考案第一実施例圧電リレー基本構
成部の斜視図。第６図および第７図は本考案第一
実施例圧電リレー動作説明図。第８図は本考案第
一実施例可動体変位説明図。第９図は本考案第二
実施例圧電リレー基本構成部斜視図。第１０図は
本考案第三実施例圧電リレー基本構成部の斜視
図。
１０，１０ｓ……可動体、１０ｂ……可動端端
面部、１０ｆ……固定端、１０ｖ……可動端、１
０ｚ……切欠き、１１……圧電駆動体、１２……
固定突起、１３……駆動突起、１４……可動接
点、１４ｂ，１４ｍ……固定接点、２０……板ば
ね。
FIG. 1 is a perspective view of the basic components of a conventional piezoelectric relay. FIG. 2 is a side view illustrating the operation of a conventional piezoelectric relay.
FIG. 3 is an explanatory diagram of the amount of movement of a movable contact of a conventional piezoelectric relay. FIG. 4 is an explanatory diagram of a modification of a conventional piezoelectric relay protrusion. FIG. 5 is a perspective view of the basic components of the piezoelectric relay according to the first embodiment of the present invention. 6 and 7 are explanatory diagrams of the operation of the piezoelectric relay according to the first embodiment of the present invention. FIG. 8 is an explanatory diagram of the displacement of the movable body in the first embodiment of the present invention. FIG. 9 is a perspective view of the basic components of a piezoelectric relay according to a second embodiment of the present invention. FIG. 10 is a perspective view of the basic components of a piezoelectric relay according to a third embodiment of the present invention. 10, 10s...Movable body, 10b...Movable end end face portion, 10f...Fixed end, 10v...Movable end, 1
0z...Notch, 11...Piezoelectric drive body, 12...
Fixed protrusion, 13... Drive protrusion, 14... Movable contact, 14b, 14m... Fixed contact, 20... Leaf spring.
Claims (1)
体と、 この圧電駆動体を伸長方向の両端で支持する
一対の支持面を含み、この圧電駆動体の伸長に
応じて反りが与えられるように構成された可動
体と を備え、 この可動体の一端が固定端であり他端に可動
接点が設けられた構造を備えた圧電リレーにお
いて、 上記可動体は、 上記一対の支持面の間で弾性変形し、上記一
対の支持面のうち上記固定端に近い支持面から
その固定端までの間または上記一対の支持面の
うち上記可動接点に近い支持面とその可動接点
の近傍までの間は上記一対の支持面の間の形状
よりも肉厚で弾性変形しない形状に構成された
ことを特徴とする圧電リレー。 (2) 可動体が１個の金属体からなり、一対の支持
面の間の少なくとも一部が薄板状になるように
削り取られた構造である実用新案登録請求の範
囲第(1)項に記載の圧電リレー。 (3) 薄板状になるように削り取られた部分のさら
に一部分が薄く削り取られた構造である実用新
案登録請求の範囲第(2)項に記載の圧電リレー。 (4) 可動体が固定端側の部材と、可動接点側の部
材と、この両部材を接続する板ばね材からなる
実用新案登録請求の範囲第(1)項に記載の圧電リ
レー。[Claims for Utility Model Registration] (1) A piezoelectric drive body in which a plurality of piezoelectric elements are integrally laminated, and a pair of support surfaces that support this piezoelectric drive body at both ends in the direction of extension; A piezoelectric relay comprising a movable body configured to be warped according to extension, one end of the movable body being a fixed end, and the other end having a movable contact, the movable body being , which is elastically deformed between the pair of support surfaces, and between the support surface closer to the fixed end of the pair of support surfaces and the support surface closer to the movable contact among the pair of support surfaces; A piezoelectric relay characterized in that the area up to the vicinity of the movable contact has a shape that is thicker than the shape between the pair of support surfaces and does not undergo elastic deformation. (2) The movable body is made of one metal body, and at least a part of the space between the pair of supporting surfaces is shaved off to form a thin plate, as stated in claim (1) of the utility model registration claim. piezoelectric relay. (3) The piezoelectric relay according to claim (2) of the utility model registration, which has a structure in which a portion of the portion that has been shaved off to become a thin plate is further thinly shaved off. (4) The piezoelectric relay according to claim (1), in which the movable body comprises a member on the fixed end side, a member on the movable contact side, and a leaf spring material connecting these two members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17179783U JPS6078557U (en) | 1983-11-04 | 1983-11-04 | piezoelectric relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17179783U JPS6078557U (en) | 1983-11-04 | 1983-11-04 | piezoelectric relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6078557U JPS6078557U (en) | 1985-05-31 |
| JPH0224199Y2 true JPH0224199Y2 (en) | 1990-07-03 |
Family
ID=30374663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17179783U Granted JPS6078557U (en) | 1983-11-04 | 1983-11-04 | piezoelectric relay |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6078557U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5235854A (en) * | 1975-09-13 | 1977-03-18 | Matsushita Electric Works Ltd | Coilless relay |
-
1983
- 1983-11-04 JP JP17179783U patent/JPS6078557U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5235854A (en) * | 1975-09-13 | 1977-03-18 | Matsushita Electric Works Ltd | Coilless relay |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6078557U (en) | 1985-05-31 |
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