EP0184717A1 - Wandlerplatte für piezoelektrische Wandler - Google Patents

Wandlerplatte für piezoelektrische Wandler Download PDF

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Publication number
EP0184717A1
EP0184717A1 EP85114992A EP85114992A EP0184717A1 EP 0184717 A1 EP0184717 A1 EP 0184717A1 EP 85114992 A EP85114992 A EP 85114992A EP 85114992 A EP85114992 A EP 85114992A EP 0184717 A1 EP0184717 A1 EP 0184717A1
Authority
EP
European Patent Office
Prior art keywords
carrier plate
electrode
plate
electrodes
ribbon
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.)
Withdrawn
Application number
EP85114992A
Other languages
German (de)
English (en)
French (fr)
Inventor
Erwin Dipl.-Ing. Martin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0184717A1 publication Critical patent/EP0184717A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
    • B06B1/0662—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element with an electrode on the sensitive surface

Definitions

  • the invention relates to a transducer plate for piezoelectric transducers with a carrier plate and at least one piezoceramic which is connected to the carrier plate by an adhesive layer and is provided on both sides with electrodes, the electrodes being contacted by means of electrically conductive ribbons.
  • the outer electrode of the transducer plate is at risk, so that the contact reliability of the connecting tape and its ability to tear are adversely affected. This applies in particular if, instead of the approx. 3 ⁇ m thick silver electrode, inexpensive thin electrodes are used, which are produced in the sputtering or vapor deposition process.
  • the object of the invention is. to create a secure, tear-resistant contact of the connecting ribbon and at least to protect the outer electrode from environmental influences.
  • the object is achieved according to the invention in that at least the electrode facing away from the carrier plate and the ribbon contacted with it are covered in its fastening area with a protective layer.
  • a protective layer protects both the electrode and the contact area of the connecting ribbon, so that the contacting is significantly improved with regard to the tear resistance.
  • this area including the outer electrode, is protected from environmental influences. This means that thin electrodes can also be used, which can be applied inexpensively to the piezoceramic.
  • the protective layer also covers the edge region of the piezoceramic as well as the electrode facing the carrier plate.
  • the protective layer preferably consists of a plastic adhesive film, which can be a hot-melt adhesive film, the thickness of this layer being approximately 30-50 ⁇ m. With this layer thickness, the frequency response of the transducer plate is not adversely affected
  • the converter plate shown in FIGS. 1 and 2 consists of a carrier plate 1 made of an aluminum alloy. On one side of the carrier plate 1, an adhesive layer 2 is applied over the entire surface, which consists of a copolymer or the like. This layer is followed by the piezoceramic 3, which is coated on both sides with an electrically conductive layer 4, 5 forming the piezoceramic Contact is made via wire or ribbon 6 and 7, the ribbon 6 being held clamped between the electrode 5 and the adhesive layer 2
  • the ribbon 7 is soldered to the electrode 4 in a known manner.
  • both parts are covered with an additional protective layer 8. consist of a plastic adhesive film and be about 30 - 50 ⁇ m thick.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
EP85114992A 1984-11-29 1985-11-26 Wandlerplatte für piezoelektrische Wandler Withdrawn EP0184717A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3443577 1984-11-29
DE3443577 1984-11-29

Publications (1)

Publication Number Publication Date
EP0184717A1 true EP0184717A1 (de) 1986-06-18

Family

ID=6251499

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85114992A Withdrawn EP0184717A1 (de) 1984-11-29 1985-11-26 Wandlerplatte für piezoelektrische Wandler

Country Status (5)

Country Link
EP (1) EP0184717A1 (enrdf_load_stackoverflow)
JP (1) JPS61132000A (enrdf_load_stackoverflow)
AU (1) AU5045285A (enrdf_load_stackoverflow)
FI (1) FI854712A7 (enrdf_load_stackoverflow)
IN (1) IN161925B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10045646A1 (de) * 2000-09-15 2002-04-04 Hydrometer Gmbh Ultraschallwandler sowie Ultraschallzähler

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3427481A (en) * 1965-06-14 1969-02-11 Magnaflux Corp Ultrasonic transducer with a fluorocarbon damper
FR2240442A1 (enrdf_load_stackoverflow) * 1973-08-08 1975-03-07 Kureha Chemical Ind Co Ltd
US4420707A (en) * 1982-08-09 1983-12-13 Automation Industries, Inc. Backing for ultrasonic transducer crystal
EP0110378A2 (en) * 1982-11-29 1984-06-13 Kabushiki Kaisha Toshiba Ultrasonic probe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3427481A (en) * 1965-06-14 1969-02-11 Magnaflux Corp Ultrasonic transducer with a fluorocarbon damper
FR2240442A1 (enrdf_load_stackoverflow) * 1973-08-08 1975-03-07 Kureha Chemical Ind Co Ltd
US4420707A (en) * 1982-08-09 1983-12-13 Automation Industries, Inc. Backing for ultrasonic transducer crystal
EP0110378A2 (en) * 1982-11-29 1984-06-13 Kabushiki Kaisha Toshiba Ultrasonic probe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ULTRANSONICS, Band 12, Nr. 4, Juli 1974, Seite 161-167, Guildford, GB; A.F. BROWN et al.: "Generation and reception of wideband ultrasound" *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10045646A1 (de) * 2000-09-15 2002-04-04 Hydrometer Gmbh Ultraschallwandler sowie Ultraschallzähler
DE10045646C2 (de) * 2000-09-15 2002-10-17 Hydrometer Gmbh Ultraschallwandler und Verwendung desselben in einem Ultraschallzähler

Also Published As

Publication number Publication date
IN161925B (enrdf_load_stackoverflow) 1988-02-27
FI854712A0 (fi) 1985-11-28
AU5045285A (en) 1986-06-26
JPS61132000A (ja) 1986-06-19
FI854712A7 (fi) 1986-05-30

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Designated state(s): DE GB NL

17P Request for examination filed

Effective date: 19861127

17Q First examination report despatched

Effective date: 19880914

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19890125

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Inventor name: MARTIN, ERWIN, DIPL.-ING.