JPS5813669Y2 - Ultrasonic transducer unit - Google Patents
Ultrasonic transducer unitInfo
- Publication number
- JPS5813669Y2 JPS5813669Y2 JP1978011995U JP1199578U JPS5813669Y2 JP S5813669 Y2 JPS5813669 Y2 JP S5813669Y2 JP 1978011995 U JP1978011995 U JP 1978011995U JP 1199578 U JP1199578 U JP 1199578U JP S5813669 Y2 JPS5813669 Y2 JP S5813669Y2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- ultrasonic transducer
- electrodes
- ultrasonic
- insulating case
- 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
- 239000011521 glass Substances 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 description 10
- 230000001070 adhesive effect Effects 0.000 description 10
- 229910000679 solder Inorganic materials 0.000 description 10
- 239000010410 layer Substances 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Description
【考案の詳細な説明】
本考案は医療用機器などに用いられる超音波振動子ユニ
ットに関するものであり、感度の向−ヒを計ろうとする
ものである。[Detailed Description of the Invention] The present invention relates to an ultrasonic transducer unit used in medical equipment, etc., and attempts to improve sensitivity.
従来におけるこの種の超音波振動子ユニットは第1図〜
第3図に示すように構成されていた。This type of conventional ultrasonic transducer unit is shown in Figure 1~
It was constructed as shown in Figure 3.
上面にスリットによって複数個に分割された分割電極1
をもち、下面に全面電極2をもった超音波振動子3は、
外側面全面に電極4を形成し、内側面に、上記分割電極
1に対応して交互に形成された電極5を形成した上下面
開口の絶縁ケース6の底部に収納され、分割電極1と内
面電極5とを半田または導電性接着剤7で電気的、機械
的に結合され、全面電極2と外面電極4とも半日または
導電性接着剤7によって電気的、機械的に接続され、さ
らにこの超音波振動子3の下面には、半田あるいは導電
性接着剤Iの厚みをもったま\で接着剤8によりガラス
板9が貼付けられ、このガラス板9の下面にも樹脂層1
0を形成して構成されていた。Divided electrode 1 divided into multiple pieces by slits on the top surface
The ultrasonic transducer 3 having a full-surface electrode 2 on the lower surface is
The electrodes 4 are formed on the entire outer surface, and the electrodes 5 are formed on the inner surface alternately in correspondence with the divided electrodes 1. The electrode 5 is electrically and mechanically coupled with solder or a conductive adhesive 7, and the entire surface electrode 2 and the outer surface electrode 4 are also electrically and mechanically connected by a conductive adhesive 7. A glass plate 9 is attached to the lower surface of the vibrator 3 with an adhesive 8 using solder or a conductive adhesive I, and a resin layer 1 is also attached to the lower surface of the glass plate 9.
It was configured by forming 0.
このような構成によるものでは、超音波振動子3と絶縁
ケース6の熱膨張係数が異なるため、双方の電極1と5
または2と4を接続している半田または導電性接着剤7
が温度変化によりそれぞれの電極面より剥離するといっ
た現象が発生する欠点があった。In such a configuration, since the ultrasonic transducer 3 and the insulating case 6 have different coefficients of thermal expansion, the electrodes 1 and 5 of both
Or solder or conductive adhesive 7 connecting 2 and 4
However, there was a drawback in that the particles would peel off from the respective electrode surfaces due to temperature changes.
さらに、超音波振動子3とガラス板9の貼合せが半田オ
たは導電性接着剤7の厚みを含めて行なわれるため、信
号波が接着剤8層で減衰され、感度が低下するという欠
点もあった。Furthermore, since the ultrasonic transducer 3 and the glass plate 9 are bonded together, including the thickness of the solder or conductive adhesive 7, the signal wave is attenuated by the 8 layers of adhesive, resulting in a decrease in sensitivity. There was also.
本考案は以上のような従来の欠点を除去するものである
。The present invention eliminates the above-mentioned drawbacks of the prior art.
以下、本考案の実施例を第4図〜第6図より説明する。Embodiments of the present invention will be described below with reference to FIGS. 4 to 6.
11は短冊形圧電磁器板の上面に電極を蒸着するとき、
7本のスリットによって8個の電極となるように形成さ
れた分割電極12をもち、下面には全面電極13を形成
して構成された超音波振動子で、この超音波振動子11
は、外側面全面に電極14を形成し、内側面に上記超音
波振動子110分割電極12に対応して交互に形成され
た分割電極15を形成した上下面開放の絶縁ケース16
の底部に収納され、接着剤によって結合されている。11, when depositing an electrode on the top surface of a rectangular piezoelectric ceramic plate,
This ultrasonic vibrator 11 has a divided electrode 12 formed into eight electrodes by seven slits, and a full-surface electrode 13 is formed on the lower surface.
This is an insulating case 16 with an open top and bottom surface, in which an electrode 14 is formed on the entire outer surface, and divided electrodes 15 are formed on the inside surface, which are alternately formed in correspondence with the divided electrodes 12 of the ultrasonic transducer 110.
It is housed in the bottom of the box and held together with adhesive.
そして、超音波振動子110両端を除く6つの分割電極
12の端部にはリード線17の一端が半田18により接
続され、他端はこの分割電極12と対応する絶縁ケース
16の分割電極15に半田18で接続されている。One end of a lead wire 17 is connected by solder 18 to the ends of the six divided electrodes 12 excluding both ends of the ultrasonic transducer 110, and the other end is connected to the divided electrode 15 of the insulating case 16 corresponding to this divided electrode 12. They are connected with solder 18.
さらに超音波振動子11の下面の全面電極13の両端に
はリード線17の一端が半田18によって接続され、他
端は絶縁ケース16の外側面の全面電極14に半田で接
続されている。Furthermore, one end of a lead wire 17 is connected to both ends of the entire surface electrode 13 on the lower surface of the ultrasonic transducer 11 with solder 18, and the other end is connected to the entire surface electrode 14 on the outer surface of the insulating case 16 with solder.
また、この超音波振動子11の下面にはガラス板19が
接着剤によって貼付けられている。Further, a glass plate 19 is attached to the lower surface of the ultrasonic transducer 11 with an adhesive.
このガラス板19は、超音波振動子11の下面両端に存
在する半田18の凸部を避け、かつ6つの分割電極12
に対向する全面電極13の全体に当るように貼付けられ
るものである。This glass plate 19 avoids the convex portions of the solder 18 present on both ends of the lower surface of the ultrasonic transducer 11, and is arranged so that the six divided electrodes 12
It is pasted so as to cover the entire surface of the electrode 13 facing the surface.
そして、分割電極12の両端の2つのダミ一部分に対向
する全面電極130部分にはガラス板19は存在しなく
、ガラス板19の下面に設けられる樹脂層20が直接そ
のガラス板19の存在しない部分に接着されている。There is no glass plate 19 in the part of the entire surface electrode 130 that faces the two dummy parts at both ends of the divided electrode 12, and the resin layer 20 provided on the lower surface of the glass plate 19 is directly applied to the part where the glass plate 19 does not exist. is glued to.
以上のように構成される本考案の超音波振動子ユニット
は、超音波振動子の両端をダミーとして使用しているた
め、中央側の振動部分は全て同レベルの感度をもつこと
ができ、ガラス板も超音波振動子のダミ一部を除ぐ下面
全体の平滑面に貼付けられるため接着剤の層がきわめて
薄くなり、信号波が接着剤に収納されて減衰することも
無くなり、感度の向上が計れ、電極間の接続をリード線
で行っているため、超音波振動子と絶縁ケースとの熱膨
張係数が異っても電極間の導通が不安定になるといった
ことも阻止できるなどの利点をもち、実用的価値の犬な
るものである。The ultrasonic transducer unit of the present invention configured as described above uses both ends of the ultrasonic transducer as a dummy, so all the vibrating parts in the center can have the same level of sensitivity. Since the plate is attached to the entire smooth bottom surface of the ultrasonic transducer except for a part of the dummy, the adhesive layer becomes extremely thin, and the signal waves are not trapped in the adhesive and attenuated, improving sensitivity. Since the electrodes are connected using lead wires, it has the advantage of preventing unstable conduction between the electrodes even if the thermal expansion coefficients of the ultrasonic transducer and the insulating case differ. It is a dog of practical value.
第1図は従来の超音波振動子ユニットの上面図、第2図
は同第1図のA−に断面図、第3図は同第1図のB −
B’断面図、第4図は本考案の超音波振動子ユニットの
一実施例を示す上面図、第5図は同第4図のA −A’
断面図、第6図は同第4図のB−B’断面図である。
11・・−・−・超音波振動子、12・・・・・・分割
電極、13・・・・・・全面電極、14・・・・・・全
面電極、15・・・・・・分割電極、16・・・・・・
絶縁ケース、11・・・・・・リード線、18・・・・
・・半田、19・・・・・・ガラス板、20・・・・・
・樹脂層。Fig. 1 is a top view of a conventional ultrasonic transducer unit, Fig. 2 is a sectional view taken at A- in Fig. 1, and Fig. 3 is a cross-sectional view taken at B- in Fig. 1.
B' sectional view, FIG. 4 is a top view showing an embodiment of the ultrasonic transducer unit of the present invention, and FIG. 5 is A-A' in FIG. 4.
The sectional view, FIG. 6, is a sectional view taken along the line BB' in FIG. 4. 11...--Ultrasonic transducer, 12...Divided electrode, 13...Full-face electrode, 14...Full-face electrode, 15...Divided Electrode, 16...
Insulation case, 11...Lead wire, 18...
...Solder, 19...Glass plate, 20...
・Resin layer.
Claims (2)
面電極を設けて構成した超音波振動子を、外面に電極を
もち、内面に分割電極を形成した絶縁ケースに収納し、
超音波振動子の各電極と絶縁ケースの電極とを電気的に
導通するよう接続してなる超音波振動子ユニットにおい
て、超音波振動子の分割電極と絶縁ケースの分割電極を
リード線を介して接続し、超音波振動子の全面電極の両
端部と絶縁ケースの外面電極をI7−ド線で接続し、こ
の超音波振動子の下向に、下面に樹脂層を有するガラス
板を貼付けてなる超音波振動子ユニット。(1) An ultrasonic transducer configured by providing a split electrode on the top surface of a rectangular piezoelectric ceramic plate and a full-scale electrode on the bottom surface is housed in an insulating case that has electrodes on the outside surface and a split electrode on the inside surface,
In an ultrasonic transducer unit in which each electrode of the ultrasonic transducer and an electrode of an insulating case are electrically connected, the divided electrodes of the ultrasonic transducer and the divided electrodes of the insulating case are connected via lead wires. Both ends of the entire surface electrode of the ultrasonic vibrator and the outer surface electrode of the insulating case are connected by an I7 wire, and a glass plate having a resin layer on the lower surface is pasted below the ultrasonic vibrator. Ultrasonic transducer unit.
ス板を超音波振動子のダミ一部を除く下面全体に貼付け
てなる実用新案登録請求の範囲第(1)項記載の超音波
振動子ユニット。(2) Ultrasonic vibration according to claim (1) of the utility model registration, in which the split electrodes at both ends of the ultrasonic vibrator are used as a dummy, and a glass plate is attached to the entire lower surface of the ultrasonic vibrator except for a part of the dummy. child unit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1978011995U JPS5813669Y2 (en) | 1978-02-01 | 1978-02-01 | Ultrasonic transducer unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1978011995U JPS5813669Y2 (en) | 1978-02-01 | 1978-02-01 | Ultrasonic transducer unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54114922U JPS54114922U (en) | 1979-08-13 |
JPS5813669Y2 true JPS5813669Y2 (en) | 1983-03-16 |
Family
ID=28827446
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1978011995U Expired JPS5813669Y2 (en) | 1978-02-01 | 1978-02-01 | Ultrasonic transducer unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5813669Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59111306U (en) * | 1983-01-18 | 1984-07-27 | 株式会社村田製作所 | 3-terminal piezoelectric resonator |
-
1978
- 1978-02-01 JP JP1978011995U patent/JPS5813669Y2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS54114922U (en) | 1979-08-13 |
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