JPS645181U - - Google Patents
Info
- Publication number
- JPS645181U JPS645181U JP9917787U JP9917787U JPS645181U JP S645181 U JPS645181 U JP S645181U JP 9917787 U JP9917787 U JP 9917787U JP 9917787 U JP9917787 U JP 9917787U JP S645181 U JPS645181 U JP S645181U
- Authority
- JP
- Japan
- Prior art keywords
- base
- attached
- diaphragm
- ultrasonic transducer
- piezoelectric element
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Landscapes
- Transducers For Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
第１図は本考案の一実施例の空中超音波トラン
スジユーサ１０の断面図、第２図は振動板１２の
振動時に側部１２ｂ外周面から発振される超音波
の進行状態を示す図、第３図は本考案に従う空中
超音波トランスジユーサの指向性を示すグラフ、
第４図は典型的な先行技術の断面図、第５図は先
行技術の指向性を示すグラフである。
１０……空中超音波トランスジユーサ、１１…
…圧電素子、１２……金属製振動板、１２ａ……
前面部、１２ｂ……側部、１２ｃ……外向きフラ
ンジ部、１３……基台、１４……カバー体、１５
，１７……弾性体、１９……傾斜片、１９ａ……
反射面、α……反射面１９ａの傾斜角度。
FIG. 1 is a sectional view of an airborne ultrasonic transducer 10 according to an embodiment of the present invention, and FIG. 2 is a diagram showing the progress of ultrasonic waves emitted from the outer peripheral surface of the side portion 12b when the diaphragm 12 vibrates. FIG. 3 is a graph showing the directivity of the aerial ultrasonic transducer according to the present invention;
FIG. 4 is a cross-sectional view of a typical prior art, and FIG. 5 is a graph showing the directivity of the prior art. 10...Aerial ultrasound transducer, 11...
...Piezoelectric element, 12...Metal diaphragm, 12a...
Front part, 12b...Side part, 12c...Outward flange part, 13...Base, 14...Cover body, 15
, 17... elastic body, 19... inclined piece, 19a...
Reflection surface, α...Inclination angle of reflection surface 19a.
Claims (1)
構造を有する空中超音波トランスジユーサにおい
て、 前記振動板を、少なくとも２回以上折り曲げて
段付状に形成し、 この振動板は折曲位置のうちの圧電素子に最も
近い折曲位置以外の折曲位置で基台に弾性支持さ
れ、 前記基台の外周面に取付けられ、かつ基台の前
方側を部分的に覆うカバー体の前方側周縁部が、
反射面を構成すべく半径方向内方に向かうにつれ
て背後側に傾斜していることを特徴とする空中超
音波トランスジユーサ。[Claims for Utility Model Registration] In an airborne ultrasonic transducer having a structure in which a piezoelectric element is attached to the rear surface of a metal diaphragm, the diaphragm is bent at least twice to form a stepped shape. The diaphragm is elastically supported by the base at a bending position other than the bending position closest to the piezoelectric element among the bending positions, is attached to the outer peripheral surface of the base, and is attached to the front side of the base. The front peripheral edge of the partially covering cover body is
An aerial ultrasonic transducer characterized in that the reflecting surface is inclined toward the rear as it goes radially inward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9917787U JPH0543421Y2 (en) | 1987-06-26 | 1987-06-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9917787U JPH0543421Y2 (en) | 1987-06-26 | 1987-06-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS645181U true JPS645181U (en) | 1989-01-12 |
| JPH0543421Y2 JPH0543421Y2 (en) | 1993-11-01 |
Family
ID=31326091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9917787U Expired - Lifetime JPH0543421Y2 (en) | 1987-06-26 | 1987-06-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0543421Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013084491A1 (en) * | 2011-12-07 | 2013-06-13 | Ｎｅｃカシオモバイルコミュニケーションズ株式会社 | Oscillation device |
| DE102017107331A1 (en) * | 2017-04-05 | 2018-10-11 | Turck Holding Gmbh | ultrasonic sensor |
-
1987
- 1987-06-26 JP JP9917787U patent/JPH0543421Y2/ja not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013084491A1 (en) * | 2011-12-07 | 2013-06-13 | Ｎｅｃカシオモバイルコミュニケーションズ株式会社 | Oscillation device |
| JPWO2013084491A1 (en) * | 2011-12-07 | 2015-04-27 | Ｎｅｃカシオモバイルコミュニケーションズ株式会社 | Oscillator |
| US9236042B2 (en) | 2011-12-07 | 2016-01-12 | Nec Corporation | Oscillation device |
| DE102017107331A1 (en) * | 2017-04-05 | 2018-10-11 | Turck Holding Gmbh | ultrasonic sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0543421Y2 (en) | 1993-11-01 |
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