JPS6117670Y2 - - Google Patents
Info
- Publication number
- JPS6117670Y2 JPS6117670Y2 JP12709480U JP12709480U JPS6117670Y2 JP S6117670 Y2 JPS6117670 Y2 JP S6117670Y2 JP 12709480 U JP12709480 U JP 12709480U JP 12709480 U JP12709480 U JP 12709480U JP S6117670 Y2 JPS6117670 Y2 JP S6117670Y2
- Authority
- JP
- Japan
- Prior art keywords
- insulating case
- vibrator
- acoustic radiation
- outer bottom
- piezoelectric ceramic
- 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
- 230000005855 radiation Effects 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000011358 absorbing material Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Landscapes
- Transducers For Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
【考案の詳細な説明】
本案は魚群探知機や測深機などのように水中に
浸漬して用いられる超音波送受波器に関するもの
で、以下図面の実施例について説明する。[Detailed Description of the Invention] The present invention relates to an ultrasonic transducer that is used by being immersed in water, such as in a fish finder or a depth sounder, and the embodiments shown in the drawings will be described below.
図面において、１はチタン酸ジルコン酸鉛等よ
りなり、両面に焼付け等により電極１ａ，１ｂを
付着した圧電磁器振動子、２は該振動子の音響輻
射面（電極１ａ側）を除く外面に配設したコル
ク、発泡ゴム等如き多孔質材料よりなる振動吸収
材、３は前記振動子の電極１ａ，１ｂに接続した
リード線３ａ，３ｂからなる被覆電線、４は振動
子１、振動吸収材２および被覆電線３の一部を液
密的に被覆保護する水の音響インピーダンスとほ
ぼ等しい合成ゴム、合成樹脂等よりなる絶縁ケー
スで、ここまでは従来の構成と変わりないが、本
案においては上記振動子の音響輻射面１ａを覆う
絶縁ケース４の外底面４ａにその底面の肉厚を僅
か大きくする削りしろ４a′を設けたものである。 In the drawing, 1 is a piezoelectric ceramic vibrator made of lead zirconate titanate, etc., and has electrodes 1a and 1b attached to both sides by baking or the like, and 2 is a piezoelectric ceramic vibrator arranged on the outer surface of the vibrator except for the acoustic radiation surface (electrode 1a side). 3 is a covered wire consisting of lead wires 3a and 3b connected to the electrodes 1a and 1b of the vibrator; 4 is a vibrator 1 and a vibration absorber 2; and an insulating case made of synthetic rubber, synthetic resin, etc. whose acoustic impedance is approximately equal to the acoustic impedance of water, which covers and protects a part of the covered electric wire 3 in a liquid-tight manner.Up to this point, the structure is the same as the conventional structure, but in this case, the above-mentioned vibration A cutting margin 4a' is provided on the outer bottom surface 4a of the insulating case 4 that covers the acoustic radiation surface 1a of the child to slightly increase the thickness of the bottom surface.
従来、この種の水中用超音波送受波器は圧電磁
器振動子の音響輻射面から該輻射面を覆う絶縁ケ
ースの底面を通して音波を水中へ放射するように
なつているが、この音波を減衰なく透過させるた
め前記絶縁ケース底面の肉厚寸法を振動子の動作
周波数のほぼ半波長整数倍長さに設定する必要が
あるが、製造条件等のばらつきによつて周波数が
変動するため上記の設定は仲々困難であつた。 Conventionally, this type of underwater ultrasonic transducer has been designed to radiate sound waves into the water from the acoustic radiation surface of a piezoelectric ceramic vibrator through the bottom surface of an insulating case that covers the radiation surface. In order to transmit light, it is necessary to set the wall thickness of the bottom surface of the insulating case to a length that is approximately a half-wavelength integral multiple of the operating frequency of the vibrator. However, since the frequency varies due to variations in manufacturing conditions, etc., the above setting is not recommended. It was difficult for me to get along.
然るに本案は上述した通り、絶縁ケースの外底
面に削りしろを設けたから、周波数の変動に応じ
てその削りしろを研削すればよいので、絶縁ケー
ス底面の肉厚寸法を所要値に容易に調整すること
ができ、かつ製品の歩留を著しく改善向上する大
きな効果がある。 However, as mentioned above, in this case, since a cutting allowance is provided on the outer bottom surface of the insulating case, it is only necessary to grind the cutting allowance according to the fluctuation of the frequency, so that the wall thickness dimension of the bottom surface of the insulating case can be easily adjusted to the required value. It has the great effect of significantly improving the yield of products.
図面は本案に係る水中用超音波送受波器を示
し、第１図は正断面図、第２図は底面図である。
１……圧電磁器振動子、１ａ……音響輻射面、
２……振動吸収材、４……絶縁ケース、４ａ……
外底面、４a′……削りしろ。
The drawings show an underwater ultrasonic transducer according to the present invention, with FIG. 1 being a front sectional view and FIG. 2 being a bottom view. 1... Piezoelectric ceramic vibrator, 1a... Acoustic radiation surface,
2... Vibration absorbing material, 4... Insulating case, 4a...
Outer bottom surface, 4a'... cut it out.
Claims (1)
に配設した振動吸収材とを絶縁ケースによつて被
覆保護してなるものにおいて、前記振動子の音響
輻射面を覆う絶縁ケースの外底面に、該外底面の
肉厚寸法を調整する削りしろを設けたことを特徴
とする水中用超音波送受波器。 In a piezoelectric ceramic vibrator and a vibration absorbing material disposed on the outer surface excluding the acoustic radiation surface thereof, covered and protected by an insulating case, the outer bottom surface of the insulating case that covers the acoustic radiation surface of the vibrator. An underwater ultrasonic transducer characterized in that a cutting margin is provided to adjust the wall thickness of the outer bottom surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12709480U JPS6117670Y2 (en) | 1980-09-05 | 1980-09-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12709480U JPS6117670Y2 (en) | 1980-09-05 | 1980-09-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5748799U JPS5748799U (en) | 1982-03-18 |
| JPS6117670Y2 true JPS6117670Y2 (en) | 1986-05-29 |
Family
ID=29487505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12709480U Expired JPS6117670Y2 (en) | 1980-09-05 | 1980-09-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6117670Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018016630A1 (en) * | 2016-07-21 | 2018-01-25 | 北陸電気工業株式会社 | Piezoelectric vibration generating device and instrument provided with piezoelectric vibration generating device |
-
1980
- 1980-09-05 JP JP12709480U patent/JPS6117670Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018016630A1 (en) * | 2016-07-21 | 2018-01-25 | 北陸電気工業株式会社 | Piezoelectric vibration generating device and instrument provided with piezoelectric vibration generating device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5748799U (en) | 1982-03-18 |
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