JPH02214399A - Wave transmitter-receiver - Google Patents
Wave transmitter-receiverInfo
- Publication number
- JPH02214399A JPH02214399A JP3651889A JP3651889A JPH02214399A JP H02214399 A JPH02214399 A JP H02214399A JP 3651889 A JP3651889 A JP 3651889A JP 3651889 A JP3651889 A JP 3651889A JP H02214399 A JPH02214399 A JP H02214399A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- cylindrical
- split
- divided
- vibrators
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 230000004888 barrier function Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- 230000000644 propagated effect Effects 0.000 abstract 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Transducers For Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は送受波器に関し、特にソーナーに使用する低周
波数、高能率、高耐水圧性で小型軽量の送受波器に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transducer, and more particularly to a small and lightweight transducer with low frequency, high efficiency, and high water pressure resistance for use in sonar.
従来、この種の送受波器は、−例として第３図に示すよ
うに、円筒形振動子３ｃ複数個を電気機械変換素子とし
て積層し、外面又は内外面に絶縁シース４Ａを設けた構
造となっていた。そして特に送波音圧を高く得るために
、円筒形振動子３ｃの呼吸振動モードによる共振を利用
して送信周波数を設定し使用していた。Conventionally, this type of transducer has a structure in which, as shown in FIG. 3, for example, a plurality of cylindrical vibrators 3c are stacked as electromechanical transducers, and an insulating sheath 4A is provided on the outer or inner surface. It had become. In order to particularly obtain a high transmission sound pressure, the transmission frequency is set and used by utilizing the resonance of the cylindrical vibrator 3c in the respiratory vibration mode.
上述した従来の送受波器は、複数の円筒形振動子３ｃを
積層する構造となっているので、この場合、円筒形振動
子３ｃの剛性が高いために共振周波数は高くなり、共振
周波数を低くしようとすると外径が大きくなり、重量も
増加するという欠点があった。また共振周波数から離れ
た低周波数において使用すると、機械インピーダンスの
力率が悪くなり、電気機械変換能率が低下する結果、高
い送波音圧が得られないという欠点があった。The conventional transducer described above has a structure in which a plurality of cylindrical oscillators 3c are stacked. However, this had the disadvantage that the outer diameter would increase and the weight would also increase. Furthermore, when used at a low frequency far from the resonant frequency, the power factor of the mechanical impedance deteriorates and the electromechanical conversion efficiency decreases, resulting in a disadvantage that high transmitted sound pressure cannot be obtained.
そこで、電気機械変換素子の剛性を下げ低い共振周波数
を得るために、第４図に示すように、振動板６に圧電材
の振動子７を貼り合わせてたわみ振動を行なわせ、振動
板６の外面から送音し、内面は位相の反転した音波の短
絡現象を防止するためにじゃ音ケース８で密閉した構造
をもつようにしたものもある。Therefore, in order to reduce the rigidity of the electromechanical transducer and obtain a low resonant frequency, as shown in FIG. Some devices have a structure in which the sound is transmitted from the outside surface, and the inside surface is sealed with a sound case 8 to prevent short-circuiting of sound waves with inverted phases.
しかし、短絡現象を完全に防止するために、振動板６の
内面を空気室にすると振動板６の剛性が低いために耐水
圧性を高くできず、また耐水圧性を上げるために内部に
液体を充てんしてしや音ケース８で振動板６の内面から
の音波をしや音しようとすると、低周波であるためにじ
や音ケース８の厚みが大きくなり、大型で重量増になる
という欠点がある。However, in order to completely prevent the short circuit phenomenon, if the inner surface of the diaphragm 6 is made into an air chamber, the rigidity of the diaphragm 6 is low, making it impossible to increase the water pressure resistance. If the sound wave from the inner surface of the diaphragm 6 is to be reproduced using the sound case 8, the thickness of the sound case 8 will increase due to the low frequency, which results in an increase in size and weight. be.
本発明の目的は、低周波数、高能率、高耐水圧性をもち
、かつ小型軽量の送受波器を提供することにある。An object of the present invention is to provide a small and lightweight transducer having low frequency, high efficiency, and high water pressure resistance.
本発明の送受波器は、使用音波のほぼ半波長から１波長
の長さをもつ円筒形弾性帯を中心軸と平行の少なくとも
４本の分割線により分割して形成された少なくとも４枚
の分割振動板を備えた円筒形振動板と、この円筒形振動
板の両開口部の各分割振動板の端部をそれぞれ固定する
２つの支持リングと、外面が前記円筒形振動板の両開口
面から所定の距離だけ内側に入った各分割振動板の内面
とそれぞれ接触し入力される電気信号に応じて振動して
この振動を前記各分割振動板に伝達する円筒形振動子と
、前記円筒形振動板、支持リング及び円筒形振動子の表
面を覆う絶縁シースとを有している。The transducer of the present invention has at least four pieces formed by dividing a cylindrical elastic band having a length of approximately half to one wavelength of the used sound wave by at least four dividing lines parallel to the central axis. a cylindrical diaphragm having a diaphragm; two support rings that respectively fix the ends of each divided diaphragm at both openings of the cylindrical diaphragm; a cylindrical vibrator that is in contact with the inner surface of each divided diaphragm that has entered inside by a predetermined distance, vibrates in response to an input electric signal, and transmits the vibration to each of the divided diaphragms; and the cylindrical vibrator. It has a plate, a support ring, and an insulating sheath covering the surface of the cylindrical vibrator.
次に、本発明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１図（ａ）〜（ｄ）はそれぞれ本発明の一実施例を示
す斜視図、横断面図、上面図及び部分断面側面図である
。FIGS. 1(a) to 1(d) are a perspective view, a cross-sectional view, a top view, and a partially sectional side view, respectively, showing an embodiment of the present invention.
この実施例は、使用音波のほぼ半波長から１波長の長さ
をもつ金属や合成樹脂等の円筒形弾性体を中心軸と平行
に１２本の分割線により分割して形成された１２枚の分
割振動子１１＾〜ＩＩＬを備えた円筒形振動板１と、こ
の円筒形振動板１の両開口部の各分割振動板１１＾〜１
１Ｌの端部に設けられた、テーパーねじによりこれら分
割振動板１１Ａ〜１１Ｌの端部を締付は固定する２つの
支持リング２Ａ 、２ｍと、外面が円筒形振動板１の両
開口面から所定の距離だけ内側に入った各分割振動板１
１４〜ｌｌｔの内面とそれぞれ接触し、入力される電気
信号に応じて振動してこの振動を各分割振動板１１＾〜
ＩＩＬに伝達する２つの円筒形振動子３＾＋３ａと、円
筒形振動板１゜支持リング２＾＋２Ｂ及び円筒形振動子
３ Ａ ｒ３Ｂの表面を覆う絶縁シース４とを有する構
造となっている。This embodiment consists of 12 pieces formed by dividing a cylindrical elastic body made of metal or synthetic resin, each having a length of approximately half to one wavelength of the sound wave used, along 12 dividing lines parallel to the central axis. A cylindrical diaphragm 1 equipped with divided vibrators 11^ to IIL, and each divided diaphragm 11^ to 1 at both openings of this cylindrical diaphragm 1.
Two support rings 2A and 2m, which tighten and fix the ends of these divided diaphragms 11A to 11L by tapered screws provided at the ends of the cylindrical diaphragm 1, and a support ring 2A and 2m whose outer surfaces are located at a predetermined distance from both opening surfaces of the cylindrical diaphragm 1 Each divided diaphragm 1 that entered inside by a distance of
Each of the divided diaphragms 11~
It has a structure including two cylindrical vibrators 3^+3a transmitting data to IIL, a cylindrical diaphragm 1° support ring 2^+2B, and an insulating sheath 4 covering the surface of the cylindrical vibrators 3A r3B.
すなわち、本発明による送受波器の構造は、剛性の高い
円筒形振動子３Ａ、３Ｂの呼吸振動と、支持リング２＾
、２ａの支持力とで円筒形振動板１のたわみ振動を発生
し、結果として放射面共振器の剛性、すなわち円筒形振
動板１のたわみの剛性を下げ、低周波数の共振を得るも
のであり、更に円筒形振動板１の内面に放射される音波
、円筒形振動板１自体が隔壁となって構成する音響管内
部で位相を遅らせて外部に伝搬させることにより、内外
面から放射される音波の短絡現象を防止し、高能率で小
型軽量な送受波器を実現するものである。That is, the structure of the transducer according to the present invention suppresses the respiratory vibration of the highly rigid cylindrical vibrators 3A and 3B and the support ring 2^.
, 2a generates flexural vibration of the cylindrical diaphragm 1, and as a result, the rigidity of the radiation surface resonator, that is, the flexural rigidity of the cylindrical diaphragm 1 is lowered, and low frequency resonance is obtained. Furthermore, the sound waves radiated to the inner surface of the cylindrical diaphragm 1, and the sound waves radiated from the inner and outer surfaces by delaying the phase inside the acoustic tube formed by the cylindrical diaphragm 1 itself as a partition wall and propagating to the outside. The aim is to prevent short-circuit phenomena and realize a highly efficient, compact and lightweight transducer.
この実施例においては、たわみ振動で各分割振動板１１
＾〜ＩＬＬの側面が互いにぶつからないように・２′の
円筒形県庁子３・・３・間の範囲で各分割振動板１１＾
〜ＩＬＬ間に隙間（約０．１〜１．０鳳朧）を与えてい
る。In this embodiment, each divided diaphragm 11 is
^~To prevent the sides of the ILL from colliding with each other, 2' cylindrical prefectural head 3... Each divided diaphragm 11 in the range between 3.
A gap (approximately 0.1 to 1.0 obscurity) is provided between ILL and ILL.
また、各分割振動板１１＾〜ＩＩＬの円筒形振動子３＾
、３ａとの接触面は、たわみ振動により位置ずれが生じ
ないように、各分割振動板１１＾〜ｌｌｉ、に座ぐり・
を設けて円筒形振動子３＾。In addition, each divided diaphragm 11^~IIL cylindrical vibrator 3^
, 3a, each divided diaphragm 11^~lli is provided with a counterbore to prevent positional deviation due to bending vibration.
A cylindrical vibrator 3^ is provided.
３１１をはさみ込んでいる。311 is inserted.
円筒形振動子３＾＋３ｉ＋には圧電セラミックスは磁歪
振動子を用い、２つの円筒形振動子３ Ａ ＋３Ｂの極
性を合わせて接続し、リード線５で電気端子を引き出し
、円筒形振動板１２円筒形振動子３＾、３！Ｉ及び支持
リング２＾＋２ａの内外面及び端面等の表面に海水から
保護するための絶縁シース４をモールド等により設ける
。For the cylindrical vibrator 3^+3i+, a piezoelectric ceramic magnetostrictive vibrator is used, and the two cylindrical vibrators 3A and 3B are connected with their polarities matched, and the electrical terminals are drawn out with the lead wire 5, and the cylindrical diaphragm 12 is connected to the cylindrical vibrator. Shape oscillator 3^, 3! An insulating sheath 4 for protection from seawater is provided by molding or the like on the inner and outer surfaces, end surfaces, etc. of I and the support ring 2^+2a.
各分割振動板１１Ａ〜ｌｌｔ、のたわみ共振と同じ周波
数の電気信号をリード線５から加えると、円筒形振動子
３Ａ、３Ｂが呼吸振動を行ない各分割振動板１１Ａ〜ｌ
ｌｔの接触面に径方向の駆動力を加える。When an electric signal of the same frequency as the deflection resonance of each divided diaphragm 11A-llt is applied from the lead wire 5, the cylindrical vibrators 3A and 3B perform breathing vibration, and each divided diaphragm 11A-llt.
Apply a radial driving force to the contact surface of lt.
一方では、分割振動板１１＾〜ＩＬＬの端部を支持リン
グ２＾１２Ｂが固定しているので、てこの作用により分
割振動板１１Ａ〜ＩＬＬの中央部が大きく変位するたわ
み振動を起す、このときの円筒形振動子３＾＋３Ｂと円
筒形振動板１の変位分布及び方向の関係を第２図の点線
及び−点鎖線で示す。On the other hand, since the support ring 2^12B fixes the ends of the divided diaphragms 11^~ILL, the lever action causes a deflection vibration in which the central parts of the divided diaphragms 11A~ILL are largely displaced. The relationship between the displacement distribution and direction of the cylindrical vibrator 3^+3B and the cylindrical diaphragm 1 is shown by the dotted line and the -dotted chain line in FIG.
この振動により円筒形振動板１の内外面に逆位相の音波
が放射され、内面に放射された音波は音響管の側壁（す
なわち円筒形振動板１）が同位相で振動しているため、
円筒形振動板１を透過することなく上下の端面に伝搬し
、伝搬時間による位相の遅れにより外面から放射された
音波との短絡現象が効率良く防止される。Due to this vibration, sound waves with opposite phases are radiated to the inner and outer surfaces of the cylindrical diaphragm 1, and the sound waves radiated to the inner surface are caused by the side walls of the acoustic tube (i.e., the cylindrical diaphragm 1) vibrating in the same phase.
The sound waves propagate to the upper and lower end surfaces without passing through the cylindrical diaphragm 1, and a short circuit phenomenon with the sound waves radiated from the outer surface is efficiently prevented due to the phase delay caused by the propagation time.
なお、各分割振動板１１＾〜ｌｌｔ、間の隙間は小さい
ので、絶縁シース４を適宜厚くすることにより高耐水圧
性の送受波器とすることができる。Incidentally, since the gaps between each of the divided diaphragms 11^ to llt are small, a transducer with high water pressure resistance can be obtained by appropriately increasing the thickness of the insulating sheath 4.
以上説明したように本発明は、円筒形弾性体を少くとも
４分割して形成した分割振動板を備えた円筒形振動板と
、この円筒形振動板の両開口部を固定する支持リングと
、円筒形振動板の両開口面から所定の距離だけ内側に設
けられ各分割振動板の内面と接触する円筒形振動子とを
有し、各分割振動板のたわみ共振で使用すると共に円筒
形振動板で音響管を構成する構造とすることにより、低
周波数、高能率、高耐水圧性でかつ小型軽量な送受波器
を得ることができる効果がある。As explained above, the present invention includes a cylindrical diaphragm including a divided diaphragm formed by dividing a cylindrical elastic body into at least four parts, a support ring that fixes both openings of the cylindrical diaphragm, It has a cylindrical vibrator that is provided a predetermined distance inside from both opening surfaces of the cylindrical diaphragm and comes into contact with the inner surface of each divided diaphragm, and is used for deflection resonance of each divided diaphragm. By configuring the acoustic tube in such a structure, it is possible to obtain a small and lightweight transducer with low frequency, high efficiency, and high water pressure resistance.
第１図（ａ）〜（ｄ）はそれぞれ本発明の一実施例を示
す斜視図、横断面図、上面図及び部分断面側面図、第２
図は第１図（ａ）〜（ｄ）に示された実施例の動作を説
明するための側面模式図、第３図及び第４図はそれぞれ
従来の送受波器の第１及び第２の例を示す側面図である
。
１・・・円筒形振動板、２Ａ 、２Ｂ・・・支持リング
、３Ａ〜３ｃ・・・円筒形振動子、４，４＾・・・絶縁
シース、５，５＾＋５Ｂ・・・リード線、６・・・振動
板、７・・・振動子、８・・・しキ音ケース、１１＾〜
ＩＩＬ・・・分割振動板。
代理人 弁理士 内 原 晋
り？丙FIGS. 1(a) to 1(d) are a perspective view, a cross-sectional view, a top view, a partially sectional side view, and a second embodiment of the present invention, respectively.
The figure is a schematic side view for explaining the operation of the embodiment shown in FIGS. 1(a) to (d), and FIGS. It is a side view which shows an example. 1... Cylindrical diaphragm, 2A, 2B... Support ring, 3A to 3c... Cylindrical vibrator, 4, 4^... Insulating sheath, 5, 5^+5B... Lead wire, 6...Diaphragm, 7...Vibrator, 8...Shiki sound case, 11^~
IIL...Divided diaphragm. Agent Patent Attorney Susumori Uchihara? Hei
Claims (1)
弾性体を中心軸と平行の少なくとも４本の分割線により
分割して形成された少なくとも４枚の分割振動板を備え
た円筒形振動板と、この円筒形振動板の両開口部の各分
割振動板の端部をそれぞれ固定する２つの支持リングと
、外面が前記円筒形振動板の両開口面から所定の距離だ
け内側に入った各分割振動板の内面とそれぞれ接触し入
力される電気信号に応じて振動してこの振動を前記各分
割振動板に伝達する円筒形振動子と、前記円筒形振動板
，支持リング及び円筒形振動子の表面を覆う絶縁シース
とを有することを特徴とする送受波器。Cylindrical vibration equipped with at least four divided diaphragms formed by dividing a cylindrical elastic body having a length of approximately half to one wavelength of the sound wave used by at least four dividing lines parallel to the central axis. a plate, two support rings for respectively fixing the ends of each divided diaphragm in both openings of the cylindrical diaphragm, and an outer surface of the cylindrical diaphragm that extends a predetermined distance inward from both opening surfaces of the cylindrical diaphragm. a cylindrical vibrator that contacts the inner surface of each divided diaphragm, vibrates in response to an input electric signal, and transmits the vibration to each of the divided diaphragms; the cylindrical diaphragm, the support ring, and the cylindrical vibrator; A transducer characterized by having an insulating sheath covering the surface of the transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1036518A JP2626026B2 (en) | 1989-02-15 | 1989-02-15 | Transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1036518A JP2626026B2 (en) | 1989-02-15 | 1989-02-15 | Transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02214399A true JPH02214399A (en) | 1990-08-27 |
| JP2626026B2 JP2626026B2 (en) | 1997-07-02 |
Family
ID=12472038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1036518A Expired - Lifetime JP2626026B2 (en) | 1989-02-15 | 1989-02-15 | Transducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2626026B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008244895A (en) * | 2007-03-27 | 2008-10-09 | Nec Corp | Bending-type wave transmitter/receiver |
| US20160044419A1 (en) * | 2014-08-11 | 2016-02-11 | Ricoh Company, Ltd. | Energy conversion apparatus and speaker structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5518869U (en) * | 1978-07-21 | 1980-02-06 | ||
| JPS6146698A (en) * | 1984-07-25 | 1986-03-06 | ウエスチングハウス・エレクトリック・コーポレイション | Radial vibrator type converter |
-
1989
- 1989-02-15 JP JP1036518A patent/JP2626026B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5518869U (en) * | 1978-07-21 | 1980-02-06 | ||
| JPS6146698A (en) * | 1984-07-25 | 1986-03-06 | ウエスチングハウス・エレクトリック・コーポレイション | Radial vibrator type converter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008244895A (en) * | 2007-03-27 | 2008-10-09 | Nec Corp | Bending-type wave transmitter/receiver |
| US8515101B2 (en) | 2007-03-27 | 2013-08-20 | Nec Corporation | Bending vibration type sound transmitter |
| US20160044419A1 (en) * | 2014-08-11 | 2016-02-11 | Ricoh Company, Ltd. | Energy conversion apparatus and speaker structure |
| US9736576B2 (en) * | 2014-08-11 | 2017-08-15 | Ricoh Company, Ltd. | Energy conversion apparatus and speaker structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2626026B2 (en) | 1997-07-02 |
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