JPS5855758Y2 - Languevent type ultrasonic transducer - Google Patents
Languevent type ultrasonic transducerInfo
- Publication number
- JPS5855758Y2 JPS5855758Y2 JP16857980U JP16857980U JPS5855758Y2 JP S5855758 Y2 JPS5855758 Y2 JP S5855758Y2 JP 16857980 U JP16857980 U JP 16857980U JP 16857980 U JP16857980 U JP 16857980U JP S5855758 Y2 JPS5855758 Y2 JP S5855758Y2
- Authority
- JP
- Japan
- Prior art keywords
- electrostrictive element
- pair
- metal blocks
- cylindrical holder
- ultrasonic transducer
- 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
Landscapes
- Transducers For Ultrasonic Waves (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Description
【考案の詳細な説明】
本案は超音波洗浄機、超音波加工機などの超音波発生源
に用いられるランジュバン型超音波振動子に係り、目的
とする処は組付作業性の高いものを提供せんとするにあ
る。[Detailed description of the invention] This invention relates to a Langevin type ultrasonic vibrator used as an ultrasonic generation source in ultrasonic cleaning machines, ultrasonic processing machines, etc., and the purpose is to provide a device with high assembly workability. It's in the middle of the day.
チタン酸ジルコン酸鉛系磁器よりなる一対の圧電素子を
機械的に直列、電気的には並列に端子板を介して積層し
た電歪要素の外端面に一対の金属ブロックを当接し、こ
れら電歪要素、金属ブロックを締着部材によって一体に
締結したランジュバン型振動子が公知であるが、この種
振動子は一対の圧電素子および端子板並びに一対の金属
ブロックを順次積層すると共に偏心なく正確に位置決め
した上で締着部材により締結する必要があって上記公知
構成のものにおいては、その位置決め作業が非常に面倒
であり、また正確に位置決めし得ても締付時、積層部品
の各当接面間の接触摩擦抵抗によって圧電素子または端
子板が変動し、近傍の締着部材と接触して短絡等の電気
的不良を来たし、再度正確な位置決めを行なって締め直
さなければならず、組付作業性が極めて悪いという問題
があった。A pair of piezoelectric elements made of lead zirconate titanate porcelain are laminated mechanically in series and electrically in parallel via terminal plates, and a pair of metal blocks is brought into contact with the outer end surface of the electrostrictive element. A Langevin type vibrator in which elements and metal blocks are fastened together by a fastening member is known, but in this type of vibrator, a pair of piezoelectric elements, a terminal plate, and a pair of metal blocks are sequentially laminated and accurately positioned without eccentricity. With the above-mentioned known configuration, the positioning work is very troublesome, and even if accurate positioning is possible, each contact surface of the laminated parts is damaged during tightening. The piezoelectric element or terminal plate may move due to the contact friction resistance between them, and come into contact with nearby fastening members, resulting in electrical failures such as short circuits, and the need to accurately position and retighten the assembly. There was a problem with extremely poor sex.
本案は上記問題点を解決したもので、以下図面の実施例
について説明する。The present invention solves the above problems, and the embodiments shown in the drawings will be described below.
第１図において、Ｐはチタン酸ジルコン酸鉛系磁器より
円環状に製作し、両面に銀電極（図示しない）を生威し
厚み方向に分極した一対の圧電素子１．２を機械的に直
列、電気的には並列に円環状の端子板３を介して積層し
てなる電歪要素を示す。In Fig. 1, P is made of lead zirconate titanate porcelain in an annular shape, has silver electrodes (not shown) on both sides, and has a pair of piezoelectric elements 1.2 polarized in the thickness direction mechanically connected in series. , shows an electrostrictive element which is electrically stacked in parallel with an annular terminal plate 3 interposed therebetween.
４は前記環状の電歪要素Ｐの一方の圧電素子１の外端面
に当接し、異径の貫通孔４ａを具えた第１の金属ブロッ
ク、５は他方の圧電素子２の外端面に当接し、その当接
面の中央に盲ねし孔５ａを具えた第２の金属ブロック、
６は前記第１の金属ブロックの貫通孔４ａおよび電歪要
素Ｐの中央孔を各々挿通して第２の金属ブロックの盲ね
し孔５ａに螺合し、これら電歪要素Ｐと第１．第２の金
属ブロック４，５を各々一体に締結する締付ボルトで、
ここまでは従来公知の内締めランジュバン型振動子を構
成する。4 is a first metal block that comes into contact with the outer end surface of one piezoelectric element 1 of the annular electrostrictive element P and is provided with a through hole 4a of a different diameter; 5 comes into contact with the outer end surface of the other piezoelectric element 2; , a second metal block having a blind hole 5a in the center of its contact surface;
6 passes through the through hole 4a of the first metal block and the center hole of the electrostrictive element P, and is screwed into the blind hole 5a of the second metal block, so that these electrostrictive elements P and the first. A tightening bolt that fastens the second metal blocks 4 and 5 together,
Up to this point, a conventionally known internally tightened Langevin type vibrator is constructed.
次に７はポリプロピレン樹脂などの透明絶縁材料よりな
り、前記電歪要素Ｐの全外周面およびこれと当接する一
対の金属ブロック４．５の内端外周面を同心上に挿通保
持するよう内径および高さを適宜寸法に設定してなる筒
状ホルダーで、図示の如く金属ブロック４，５の外径が
電歪要素Ｐのそれと同径の場合には、前記ホルダー７の
内径を電歪要素Ｐの外径とほぼ同寸の一様な面となし、
これに電歪要素Ｐを嵌合しつづいて一対の金属ブロック
４，５の内端外周面をホルダー７の開口部を封するよう
嵌合するが、逆に金属ブロックの外径が電歪要素のそれ
よりも径大の場合には第２図の如く筒状ホルダー１７の
内面を径小孔１７ａ′とこれから開口端に伸びる一対の
径大孔１７ａ ”からなる異径面となし、該異径内面の
径小孔１７ａ′に電歪要素Ｐ１の外周面を嵌合し、両側
の径大孔１７ ａ ／／には該径大孔を封するよう一対
の金属ブロック１４．１５の内端外周面を嵌合するか、
あるいは第３図に示したように一対の金属ブロック２４
．２５の内端面にそれぞれ電歪要素Ｐ２の外周と対応す
る周溝２４ ｂ 、２５ ｂを形威し、この周溝２４ｂ
、２５ｂに予じめ電歪要素Ｐ２を嵌合した上記第１図と
同形状の筒状ホルダー２７の開口端縁を嵌入するように
してもよい。Next, 7 is made of a transparent insulating material such as polypropylene resin, and has an inner diameter so that it is inserted concentrically through the entire outer circumferential surface of the electrostrictive element P and the inner end outer circumferential surfaces of the pair of metal blocks 4.5 that are in contact with the electrostrictive element P. It is a cylindrical holder whose height is set to an appropriate size, and when the outer diameter of the metal blocks 4 and 5 is the same as that of the electrostrictive element P as shown in the figure, the inner diameter of the holder 7 is the same as that of the electrostrictive element P. A uniform surface of approximately the same size as the outer diameter of
After fitting the electrostrictive element P thereto, the pair of metal blocks 4 and 5 are fitted so as to seal the inner end outer peripheral surfaces of the holder 7, but conversely, the outer diameter of the metal block is the electrostrictive element. If the diameter is larger than that of the cylindrical holder 17, the inner surface of the cylindrical holder 17 is made into a surface with different diameters, as shown in FIG. The outer peripheral surface of the electrostrictive element P1 is fitted into the small diameter hole 17a' on the inner diameter, and the inner ends of a pair of metal blocks 14 and 15 are fitted into the large diameter hole 17a on both sides to seal the large diameter hole. Either fit the outer circumferential surface or
Alternatively, a pair of metal blocks 24 as shown in FIG.
．． 25 are formed with circumferential grooves 24 b and 25 b corresponding to the outer periphery of the electrostrictive element P2, respectively, and the circumferential groove 24 b
, 25b may be fitted with an opening edge of a cylindrical holder 27 having the same shape as that shown in FIG. 1, in which the electrostrictive element P2 is fitted in advance.
上記各実施例は環状電歪要素の内径面を電気絶縁的に挿
通する１本のボルトによって電歪要素と一対の金属ブロ
ックを結合した各種内締めランジュバン型振動子に対し
て筒状ホルダーを具備せしめた態様を示したが、第４図
および第５図に示すような各種の外周締めランジュバン
型振動子についても本案を適用できる。Each of the above embodiments includes a cylindrical holder for various internally tightened Langevin-type vibrators in which an electrostrictive element and a pair of metal blocks are connected by a single bolt that is inserted electrically insulatingly through the inner diameter surface of the annular electrostrictive element. Although this embodiment has been shown, the present invention can also be applied to various peripherally tightened Langevin type vibrators as shown in FIGS. 4 and 5.
即ち、第４図は第１および第２の金属ブロック３４．３
５の外周にそれぞれ刻設した雄ねじ３４ ａ 、３５ａ
に螺合する袋状ナツト３６によって一対の板状圧電素子
３１．３２と該素子間に介在した端子板３３よりなる電
歪要素Ｐ３と、第１．第２の金属ブロック３４．３５を
結合した振動子に対し、筒状ホルダー３７を上記第３図
の実施例と同様の構成で以って具備せしめた場合である
。That is, FIG. 4 shows the first and second metal blocks 34.3.
Male screws 34 a and 35 a carved on the outer periphery of 5, respectively.
An electrostrictive element P3 consisting of a pair of plate-shaped piezoelectric elements 31 and 32 and a terminal plate 33 interposed between the elements is connected by a bag-shaped nut 36 screwed into the first . This is a case where a cylindrical holder 37 is provided with a structure similar to that of the embodiment shown in FIG. 3 above for a vibrator to which second metal blocks 34 and 35 are coupled.
また第５図は一対の板状圧電素子４１．４２と端子板４
３よりなる電歪要素Ｐ４と、該電歪要素Ｐ４の外端面に
当接する端面側の外周にフランジ４４ ａ 、４５ ａ
を有する第１．第２の金属ブロック４４．４５を、前記
フランジ４４ ａ 、４５ａに設けた複数の小孔４４ａ
’、４５ａ’を挿通する同じく複数のポル） ４６３群
およびナラ） ４６ ｂ群によって結合した振動子に対
し、筒状ホルダー４７を上記第２図の実施例とほぼ同様
の構成で以って具備せしめた場合である。In addition, FIG. 5 shows a pair of plate-shaped piezoelectric elements 41 and 42 and a terminal plate 4.
3, and flanges 44 a and 45 a on the outer periphery of the end surface that abuts the outer end surface of the electrostrictive element P4.
1st with A second metal block 44.45 is inserted into a plurality of small holes 44a provided in the flanges 44a, 45a.
A cylindrical holder 47 is provided with a configuration similar to that of the embodiment shown in FIG. This is a case of forcing.
なお、第４図の如く端子板３３の中央に接続した導線３
８を、一方の圧電素子３１およびこれと当接する第１の
金属ブロック３４の各々中央に設けた細い貫通孔３１
ａおよび３４ ａから外部へ引出すよう構成した場合な
どは、筒状ホルダーに対する電歪要素の収納を容易にす
るが、第１図（第２．３．５図も含めて）実施例の如く
外周に導線接続脚３ａを突設した端子板３を用いた電歪
要素Ｐを収納する場合などは、そのままでは端子板３の
挿入が困難なため、例えば端子板が１個のときは予じめ
端子板を筒状ホルダーの長手方向中央部において接続脚
３ａが外部に突出するようホルダーの成形と同時に一体
に埋設しておくか、または端子板が複数のときは第６図
に示すよう、筒状ホルダー７′の側壁に端子板３′の接
続脚３ａ′を挿通するスリット７ａ′を形成しておくこ
とにより、電歪要素および金属ブロックの嵌合を容易に
する。In addition, as shown in FIG. 4, the conductor 3 connected to the center of the terminal board 33
8 is a thin through-hole 31 provided at the center of each of one piezoelectric element 31 and the first metal block 34 in contact therewith.
When the electrostrictive element is configured to be pulled out from a and 34 a, it is easy to store the electrostrictive element in the cylindrical holder, but as shown in the embodiment shown in Fig. 1 (including Fig. 2.3.5), the outer periphery is When storing an electrostrictive element P using a terminal plate 3 with a protruding conductor connection leg 3a, it is difficult to insert the terminal plate 3 as it is. Either the terminal board is buried in the longitudinal center of the cylindrical holder so that the connecting legs 3a protrude outward, or when the holder is formed, the terminal board is buried in the cylindrical holder as shown in FIG. 6. By forming a slit 7a' in the side wall of the shaped holder 7' through which the connecting leg 3a' of the terminal plate 3' is inserted, fitting of the electrostrictive element and the metal block is facilitated.
以上の通り本案は複数個の圧電素子を端子板を介して積
層してなる電歪要素と、その両端面に積層した一対の金
属ブロックとを締着部材によって一体に締結してなるラ
ンジュバン型超音波振動子に、前記電歪要素と一対の金
属ブロックを嵌合してこれらを位置決めする筒状ホルダ
ーを具備せしめたものであるから、電歪要素および金属
ブロックの位置決めを簡単かつ正確に行なうことができ
、しかも締付時におけ°る電歪要素の変動も前記ホルダ
ーによって完全に阻止されるので従来に比し組付作業性
を顕著に高め安価に製作できるという効果がある。As described above, the present invention is a Langevin-type superstructure in which an electrostrictive element is formed by laminating a plurality of piezoelectric elements via terminal plates, and a pair of metal blocks laminated on both end faces are fastened together by a fastening member. Since the sonic vibrator is equipped with a cylindrical holder that fits the electrostrictive element and the pair of metal blocks and positions them, the electrostrictive element and the metal blocks can be easily and accurately positioned. Furthermore, since the holder completely prevents fluctuations of the electrostrictive element during tightening, it is possible to significantly improve assembly workability and manufacture at a lower cost than in the past.
更に本案によれば電歪要素の外周面が筒状ホルダーによ
って絶縁的に被覆保護されるため塵埃等の付着によって
生ずる電気絶縁性の低下、短絡現象を防止する他、筒状
ホルダーを透明性材料より構成したため外部より内部の
状態を直視でき、過大な入力パワーの印加、長時間な過
酷な運転等によって発生する電歪要素の磁器割れを検知
し迅速に対処できる利点もある。Furthermore, according to the present invention, the outer peripheral surface of the electrostrictive element is insulatively covered and protected by the cylindrical holder, which prevents a decrease in electrical insulation properties and short-circuit phenomena caused by the adhesion of dust, etc., and also prevents the cylindrical holder from being made of a transparent material. Because of the structure, it is possible to directly see the internal state from the outside, and there is also the advantage that cracks in the electrostrictive element's porcelain caused by application of excessive input power, long-term harsh operation, etc. can be detected and dealt with quickly.
第１図は本案の基本実施例に係るランジュバン型振動子
を示し、Ａは４半分断面の正面図、ＢはＡ図イーイ線に
沿って断面とした平面図である。
第２図乃至第５図は本案の他の実施例に係るランジュバ
ン型振動子で、それぞれ４半分断面の正面図である。
第６図は複数の圧電素子、端子板を筒状ホルダーに収納
した状態を示す斜視図である。FIG. 1 shows a Langevin type vibrator according to a basic embodiment of the present invention, in which A is a front view of a quarter-half cross section, and B is a plan view of a cross section taken along line E in FIG. FIGS. 2 to 5 are quarter-section front views of Langevin type vibrators according to other embodiments of the present invention. FIG. 6 is a perspective view showing a state in which a plurality of piezoelectric elements and a terminal plate are housed in a cylindrical holder.
Claims (1)
素と、その両端面に積層した一対の金属ブロックとを締
着部材によって一体に締結してなるものにおいて、前記
電歪要素と一対の金属ブロックを嵌合してこれらを位置
決めする筒状ホルダーを具備せしめ、かつ該筒状ホルダ
ーを透明絶縁性材料で構成したことを特徴とするランジ
ュバン型超音波振動子。An electrostrictive element formed by laminating a plurality of piezoelectric elements via terminal plates, and a pair of metal blocks laminated on both end faces thereof, which are fastened together by a fastening member, wherein the electrostrictive element and A Langevin type ultrasonic transducer comprising a cylindrical holder that fits and positions a pair of metal blocks, and the cylindrical holder is made of a transparent insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16857980U JPS5855758Y2 (en) | 1980-11-25 | 1980-11-25 | Languevent type ultrasonic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16857980U JPS5855758Y2 (en) | 1980-11-25 | 1980-11-25 | Languevent type ultrasonic transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5685496U JPS5685496U (en) | 1981-07-09 |
| JPS5855758Y2 true JPS5855758Y2 (en) | 1983-12-21 |
Family
ID=29679407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16857980U Expired JPS5855758Y2 (en) | 1980-11-25 | 1980-11-25 | Languevent type ultrasonic transducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5855758Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012045755A1 (en) * | 2010-10-04 | 2012-04-12 | Dr. Hielscher Gmbh | Device and method for bracing electromechanical composite high-frequency vibration systems (vfhs) |
| EP3017878A4 (en) * | 2013-07-03 | 2017-03-15 | Olympus Corporation | Ultrasonic vibration device, ultrasonic vibration device manufacturing method, and ultrasonic medical apparatus |
-
1980
- 1980-11-25 JP JP16857980U patent/JPS5855758Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5685496U (en) | 1981-07-09 |
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