JPH064079Y2 - Piezoelectric fan - Google Patents
Piezoelectric fanInfo
- Publication number
- JPH064079Y2 JPH064079Y2 JP1988090169U JP9016988U JPH064079Y2 JP H064079 Y2 JPH064079 Y2 JP H064079Y2 JP 1988090169 U JP1988090169 U JP 1988090169U JP 9016988 U JP9016988 U JP 9016988U JP H064079 Y2 JPH064079 Y2 JP H064079Y2
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric
- thin plate
- piezoelectric bimorph
- metal thin
- plate
- 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 - Lifetime
Links
- 239000002184 metal Substances 0.000 claims description 17
- 210000000078 claw Anatomy 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Description
【考案の詳細な説明】 産業上の利用分野 本考案は圧電バイモルフ振動子による圧電効果を利用し
て弾性薄板を励振させて送風する構造の圧電ファンに関
し、例えば各種エレクトロニクス機器における局所的な
空冷に適する送風装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a piezoelectric fan having a structure in which an elastic thin plate is excited to blow air by utilizing the piezoelectric effect of a piezoelectric bimorph oscillator. It relates to a suitable blower.
従来の技術 ところで圧電バイモルフ振動子とは、第４図に示すよう
にセラミック等の板状の圧電体の両面にそれぞれ電極を
設けて分極を行った圧電素子１ａ，１ｂの分極軸Ａを向
い合わせて、その間に金属薄板２を挾み込んだバイモル
フ構造とし、前記片側の電極の一方に半田付けされたリ
ード線３には正の電位を、他側の電極の一方に半田付け
されたリード線４には負の電位を与えると、点線で示し
たように前記構造による圧電バイモルフ振動子５は湾曲
する。また、リード線３，４にそれぞれ前記と逆の電位
を与えると、逆の方向に湾曲する。よってリード線３，
４間に交流電圧を印加することにより、圧電バイモルフ
振動子５をタワミ振動させることができ、圧電ファンは
この作用を利用したものである。2. Description of the Related Art By the way, a piezoelectric bimorph vibrator is, as shown in FIG. 4, provided with electrodes on both sides of a plate-shaped piezoelectric material such as ceramic, and polarized the piezoelectric elements 1a and 1b so that the polarization axes A thereof face each other. Then, a thin metal plate 2 is sandwiched between them to form a bimorph structure, a positive potential is applied to the lead wire 3 soldered to one of the electrodes on one side, and a lead wire soldered to one of the electrodes on the other side. When a negative potential is applied to 4, the piezoelectric bimorph oscillator 5 having the above structure bends as shown by the dotted line. When a potential opposite to the above is applied to the lead wires 3 and 4, the lead wires 3 and 4 bend in opposite directions. Therefore, the lead wire 3,
The piezoelectric bimorph vibrator 5 can be vibrated by applying an alternating voltage between the four electrodes, and the piezoelectric fan utilizes this action.
従来、この種の圧電ファンは、第５図に示すような構成
であった。第５図において、５は上述したように一対の
板状圧電素子１ａ，１ｂの間に金属薄板２を挾持してな
る圧電バイモルフ振動子で、この圧電バイモルフ振動子
５を構成する金属薄板２の一端に弾性薄板６が直線状と
なるように貼付けられたものを２個１組とし、前記２つ
の弾性薄板６の他端を片持ち構造でＶ字形に支持部７に
固定支持して構成されている。そして、前記２つ用意さ
れた一対の圧電素子１ａ，１ｂにリード線４，５を介し
て交流駆動電圧を印加した時、各々の圧電バイモルフ振
動子５が互いに逆向きにタワミ振動し、それによる弾性
薄板６の先端を揺振させることによって得られた風を利
用するものであった。またこの時、圧電バイモルフ振動
子５が互いに逆向きに振動することにより、支持部７の
振動を抑えた構造としているものであった。Conventionally, this type of piezoelectric fan has a structure as shown in FIG. In FIG. 5, reference numeral 5 denotes a piezoelectric bimorph oscillator in which the metal thin plate 2 is sandwiched between the pair of plate-shaped piezoelectric elements 1a and 1b as described above. Two elastic thin plates 6 are attached to one end so as to form a straight line as one set, and the other ends of the two elastic thin plates 6 are cantilevered in a V-shape to be fixedly supported by a supporting portion 7. ing. Then, when an AC drive voltage is applied to the pair of prepared piezoelectric elements 1a and 1b through the lead wires 4 and 5, the piezoelectric bimorph vibrators 5 vibrate in opposite directions to each other, which causes The wind obtained by vibrating the tip of the elastic thin plate 6 was used. Further, at this time, the piezoelectric bimorph vibrator 5 vibrates in the opposite directions to each other, so that the vibration of the support portion 7 is suppressed.
考案が解決しようとする課題 このような構成では、一対の圧電バイモルフ振動子とし
て４枚の圧電素子と２枚の金属薄板が必要であり、構造
的にも圧電バイモルフ振動子と弾性薄板を直線状に配し
ているため非常にスペースを取り、また片持ちの支持部
は圧電バイモルフ振動子の振動が逃げないように強固に
固定する必要があるといった、部品点数，作業性，形状
面からの問題があった。Problems to be Solved by the Invention In such a configuration, four piezoelectric elements and two metal thin plates are required as a pair of piezoelectric bimorph vibrators, and the piezoelectric bimorph vibrator and elastic thin plates are structurally linear. It takes a lot of space because it is placed in the space, and the cantilevered support needs to be firmly fixed so that the vibration of the piezoelectric bimorph oscillator does not escape, which is a problem from the number of parts, workability, and shape. was there.
本考案はこのような問題点を解決するもので、非常にコ
ンパクトで部品点数が削減でき、さらに作業性が良く、
特性（振幅）を安定させることのできる圧電ファンを提
供することを目的としたものである。The present invention solves such a problem, is very compact, can reduce the number of parts, and has good workability.
An object of the present invention is to provide a piezoelectric fan whose characteristics (amplitude) can be stabilized.
課題を解決するための手段 この問題点を解決するために本考案は、一対の板状圧電
素子と、この圧電素子の間に両端を同一方向にコの字状
に曲げた金属薄板を挾持してなる圧電バイモルフ振動子
を具備し、前記金属薄板の両端の曲げ部に弾性薄板を貼
付け、さらに圧電バイモルフ振動子の両端部を支持部に
固定支持したものである。Means for Solving the Problems In order to solve this problem, the present invention holds a pair of plate-shaped piezoelectric elements and a thin metal plate having both ends bent in the same direction between the piezoelectric elements. A piezoelectric bimorph oscillator is provided, elastic thin plates are attached to the bent portions of both ends of the metal thin plate, and both ends of the piezoelectric bimorph oscillator are fixedly supported by supporting portions.
作用 この構成によれば、圧電素子の間に両端をコの字状に曲
げた金属薄板を挾持してなる圧電バイモルフ振動子を具
備し、前記金属薄板の両端の曲げ部に弾性薄板を貼付
け、さらに圧電バイモルフ振動子の両端部を固定支持す
る構造により、一対の圧電素子によって同時に２枚の弾
性薄板を揺振させることができ、また圧電バイモルフ振
動子のタワミ振動の節を固定するため、支持が容易で且
つ支持部への振動の逃げもなく、さらに圧電バイモルフ
振動子と弾性薄板とをほぼ直角にいちさせることによ
り、スペースも非常に少なくてすむものである。Operation According to this configuration, the piezoelectric bimorph oscillator is provided by sandwiching the metal thin plate whose both ends are bent in a U-shape between the piezoelectric elements, and the elastic thin plates are attached to the bent portions at both ends of the metal thin plate. Furthermore, due to the structure in which both ends of the piezoelectric bimorph vibrator are fixedly supported, two elastic thin plates can be vibrated at the same time by a pair of piezoelectric elements, and since the nodes of the tawami vibration of the piezoelectric bimorph vibrator are fixed, It is easy to perform, and there is no escape of vibrations to the supporting portion. Further, the piezoelectric bimorph vibrator and the elastic thin plate are moved at a substantially right angle, so that a very small space is required.
実施例 以下本考案の一実施例について、図面を参照しながら説
明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
（実施例１） 第１図は本考案に係る圧電ファンの第１の実施例を示す
構成図である。第１図において、８は一対の板状圧電素
子９ａ，９ｂと、この圧電素子９ａ，９ｂの間に両端を
同一方向にコの字状に曲げた金属薄板１０を挾持してな
る圧電バイモルフ振動子である。このバイモルフ振動子
８を構成する金属薄板１０の曲げ部１０ａ，１０ｂに弾
性薄板１１を貼付けるとともに圧電バイモルフ振動子８
の両端部を支持部１２ａ，１２ｂで固定支持している。
そして、前記圧電素子９ａ，９ｂに半田付けしたリード
線１３，１４に交流電圧を印加すると、支持部１２ａ，
１２ｂを節として圧電バイモルフ振動子８と弾性薄板１
１は矢印の方向に振動するものである。(Embodiment 1) FIG. 1 is a block diagram showing a first embodiment of a piezoelectric fan according to the present invention. In FIG. 1, reference numeral 8 denotes a piezoelectric bimorph vibration which is formed by sandwiching a pair of plate-shaped piezoelectric elements 9a and 9b and a thin metal plate 10 between the piezoelectric elements 9a and 9b, which are bent at both ends in a U-shape in the same direction. Is a child. The elastic thin plate 11 is attached to the bent portions 10a and 10b of the metal thin plate 10 constituting the bimorph oscillator 8 and the piezoelectric bimorph oscillator 8 is formed.
Both end portions of are fixedly supported by support portions 12a and 12b.
When an AC voltage is applied to the lead wires 13 and 14 soldered to the piezoelectric elements 9a and 9b, the supporting portions 12a and
Piezoelectric bimorph vibrator 8 and elastic thin plate 1 with 12b as nodes
1 vibrates in the direction of the arrow.
この実施例によれば、一対の圧電素子9a,9bの間に両端
をコの字状に曲げた金属薄板１０を挾持してなる圧電バ
イモルフ振動子８を具備し、前記金属薄板１０の両端の
曲げ部１０ａ，１０ｂに弾性薄板１１を貼付け、さらに
圧電バイモルフ振動子８の両端部を支持部１２に固定支
持する構造により、一対の圧電素子９ａ，９ｂによって
同時に２枚の弾性薄板１１を揺振させることができ、ま
た圧電バイモルフ振動子８のタワミ振動の節を固定する
ため、支持が容易で且つ支持部１２への振動の逃げもな
く、さらに圧電バイモルフ振動子８と弾性薄板１１とを
ほぼ直角に位置させることにより、スペースも非常に少
なくてすむものである。According to this embodiment, a piezoelectric bimorph vibrator 8 is sandwiched between a pair of piezoelectric elements 9a and 9b, and a metal thin plate 10 having both ends bent in a U-shape is sandwiched between the pair of piezoelectric elements 9a and 9b. The elastic thin plates 11 are attached to the bent portions 10a and 10b, and further, both ends of the piezoelectric bimorph oscillator 8 are fixedly supported by the supporting portion 12, so that the pair of piezoelectric elements 9a and 9b simultaneously vibrates the two elastic thin plates 11. In addition, since the node of the deflection vibration of the piezoelectric bimorph vibrator 8 is fixed, the support is easy and the vibration does not escape to the support portion 12, and the piezoelectric bimorph vibrator 8 and the elastic thin plate 11 are almost the same. By locating it at a right angle, it requires very little space.
（実施例２） 第２図は本考案による第２の実施例の圧電ファンを示す
構成図であり、この実施例では第２図のように、金属薄
板１０の曲げ部方向両端部に爪部１５を前記金属薄板１
０と一体に設け、この爪部１５を支持部１２に設けた凹
部１６に嵌め合わせて接着等によって取付けることによ
り、前記第１の実施例の場合の動作に加えて圧電バイモ
ルフ振動子８の支持位置を容易に正確に決められるもの
である。(Embodiment 2) FIG. 2 is a block diagram showing a piezoelectric fan of a second embodiment according to the present invention. In this embodiment, as shown in FIG. 15 is the metal thin plate 1
0, and the claw portion 15 is fitted into the concave portion 16 provided in the support portion 12 and attached by adhesion or the like, so that the piezoelectric bimorph vibrator 8 is supported in addition to the operation of the first embodiment. The position can be easily and accurately determined.
（実施例３） 第３図は本考案による第３の実施例の圧電ファンを示す
構成図であり、この実施例では第２図の爪部１５に孔部
１７またはＵ型切り欠き１８を設けることにより、支持
部１２にそれらを利用してネジ（図示せず）等により締
め付けるだけで、容易に支持位置を正確に安定して固定
することができるものである。(Embodiment 3) FIG. 3 is a constitutional view showing a piezoelectric fan of a third embodiment according to the present invention. In this embodiment, a hole 17 or a U-shaped cutout 18 is provided in the claw portion 15 of FIG. Thus, the supporting position can be easily and accurately fixed by simply tightening the supporting portion 12 with screws (not shown) or the like.
考案の効果 以上のように本考案によれば、一対の板状圧電素子と、
この圧電素子の間に両端をコの字状に曲げた金属薄板を
挾持してなる圧電バイモルフ振動子を具備し、前記金属
薄板の両端の曲げ部に弾性薄板を貼付け、さらに圧電バ
イモルフ振動子の両端部を支持部に固定支持することに
より、非常にコンパクトで部品点数が削減でき、さらに
作業性が良く、特性（振幅）を安定させることができる
といった数々の効果が得られる。As described above, according to the present invention, a pair of plate-shaped piezoelectric elements,
A piezoelectric bimorph vibrator having a U-shaped metal thin plate sandwiched between the piezoelectric elements is provided, and elastic thin plates are attached to the bent parts at both ends of the metal thin plate. By fixing both ends to the support, it is possible to obtain various effects such as being very compact, reducing the number of parts, improving workability, and stabilizing characteristics (amplitude).
第１図は本考案による圧電ファンの第１の実施例を示す
構成図、第２図は本考案による第２の実施例の圧電ファ
ンを示す構成図、第３図は本考案による第３の実施例の
圧電ファンを示す構成図、第４図は圧電バイモルフ振動
子の基本構造を示す構成図、第５図は従来の圧電ファン
を示す構成図である。 ８……圧電バイモルフ振動子、９ａ，９ｂ……圧電素
子、１０……金属薄板、１１……弾性薄板、１２……支
持部、１３，１４……リード線、１５……爪部、１６…
…凹部、１７……孔部、１８……Ｕ型切り欠き。FIG. 1 is a block diagram showing a first embodiment of a piezoelectric fan according to the present invention, FIG. 2 is a block diagram showing a piezoelectric fan of a second embodiment according to the present invention, and FIG. 3 is a third embodiment according to the present invention. FIG. 4 is a block diagram showing the piezoelectric fan of the embodiment, FIG. 4 is a block diagram showing the basic structure of a piezoelectric bimorph vibrator, and FIG. 5 is a block diagram showing a conventional piezoelectric fan. 8 ... Piezoelectric bimorph vibrator, 9a, 9b ... Piezoelectric element, 10 ... Metal thin plate, 11 ... Elastic thin plate, 12 ... Support part, 13, 14 ... Lead wire, 15 ... Claw part, 16 ...
... recesses, 17 ... holes, 18 ... U-shaped notches.
Claims (3)
に両端を同一方向にコの字状に曲げた金属薄板を挾持し
てなる圧電バイモルフ振動子を具備し、前記金属薄板の
両端の曲げ部に弾性薄板を貼付け、さらに圧電バイモル
フ振動子の両端部を支持部に固定支持してなる圧電ファ
ン。1. A piezoelectric bimorph vibrator comprising a pair of plate-shaped piezoelectric elements and a metal thin plate having both ends bent in the same direction in a U-shape between the piezoelectric elements. A piezoelectric fan in which elastic thin plates are attached to the bent portions at both ends, and further, both ends of the piezoelectric bimorph oscillator are fixedly supported by the supporting portions.
金属薄板と一体に形成してなる実用新案登録請求の範囲
第１項に記載の圧電ファン。2. A piezoelectric fan according to claim 1, wherein claw portions are integrally formed with the metal thin plate at both ends of the metal thin plate in the bending portion direction.
る実用新案登録請求の範囲第２項に記載の圧電ファン。3. A piezoelectric fan according to claim 2, wherein the pawl has a hole or a U-shaped cutout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988090169U JPH064079Y2 (en) | 1988-07-07 | 1988-07-07 | Piezoelectric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988090169U JPH064079Y2 (en) | 1988-07-07 | 1988-07-07 | Piezoelectric fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0212099U JPH0212099U (en) | 1990-01-25 |
| JPH064079Y2 true JPH064079Y2 (en) | 1994-02-02 |
Family
ID=31314700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988090169U Expired - Lifetime JPH064079Y2 (en) | 1988-07-07 | 1988-07-07 | Piezoelectric fan |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH064079Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104717590B (en) | 2010-12-27 | 2020-09-15 | 株式会社精好 | Mobile telephone system |
| JP6231164B2 (en) * | 2016-06-08 | 2017-11-15 | 株式会社ファインウェル | Vibration element |
-
1988
- 1988-07-07 JP JP1988090169U patent/JPH064079Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0212099U (en) | 1990-01-25 |
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