EP0104457A2 - Transducteur piézoélectrique - Google Patents

Transducteur piézoélectrique Download PDF

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Publication number
EP0104457A2
EP0104457A2 EP83108429A EP83108429A EP0104457A2 EP 0104457 A2 EP0104457 A2 EP 0104457A2 EP 83108429 A EP83108429 A EP 83108429A EP 83108429 A EP83108429 A EP 83108429A EP 0104457 A2 EP0104457 A2 EP 0104457A2
Authority
EP
European Patent Office
Prior art keywords
ceramic
plate
transducer
thickness
diameter
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Withdrawn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
EP83108429A
Other languages
German (de)
English (en)
Other versions
EP0104457A3 (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 EP0104457A2 publication Critical patent/EP0104457A2/fr
Publication of EP0104457A3 publication Critical patent/EP0104457A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/10—Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Definitions

  • the invention relates to a transducer plate for electroacoustic transducers provided with a piezoelectric ceramic layer.
  • Converter plates are known from a large number of publications. In this context, reference is made to DE-OS 31 07 344, DE-OS 31 07 293, DE-OS 30 07 834, DE-OS 30 05 708, DE-OS 30 07 808, DE-PS 19 61 217, in which the transducer element is held clamped between the bearing bodies.
  • Piezoelectric transducers belong to the group of reversible transducers, i.e. they can be excited electrically and then emit sound or vice versa. These converters are therefore very versatile. They can be used in speech capsules, hearing capsules or as a ringing tone in telephone systems. Depending on its application, the transducer must be specially adapted to the requirements of, for example, a microphone, i.e. Under certain circumstances, an amplifier must be provided, or the resonator rooms and sound guide channels must be specially matched to the respective converter type.
  • the object of the invention is to design a transducer plate consisting of a carrier plate and a piezoelectric layer in such a way that the various transducer functions, namely microphone, telephone and ringer can be implemented with one and the same transducer plate.
  • the object is achieved in that the diameter of the transducer plate is in the range between 40 and 45 mm and is preferably 43 mm, that the ceramic diameter is in the range between 25 and 35 mm and is preferably 30 mm, that the thickness of the transducer plate is between 100 and 250 pm and is preferably 150 microns and that the thickness of the ceramic is between 50 and 150 microns, preferably 90 microns.
  • the limits of the design are given by the high voltage transmission factor required for sound transmitters. Another limit is the processability of the plates as well as their frequency response conditions. The thickness of the ceramic and the thickness of the transducer plate must not be less than a minimum value. But there are also limits to the top. The upper limit for the diameter of the ceramic is limited by the possibility of manufacturing thin ceramic disks. The maximum diameter for the carrier plate is determined by the maximum possible capsule diameter.
  • transducer capacity of approximately 200 nF or more is required to achieve the required voltage transmission factor in the telephone, since the telephone is thus adapted to the telephone circuit.
  • the invention has now succeeded in using a transducer plate with the same geometric properties for the microphone, telephone and ringer, although these transducers each require a different voltage transmission factor.
  • the transducer plate shown in the figures consists of a carrier plate 1 made of an aluminum alloy or brass and a piezoceramic plate 3 which is connected to the carrier plate 1 by an adhesive layer 2.
  • the adhesive layer 2 can consist of a relatively thick layer which is distributed over the entire area over the carrier plate. In the present case, however, the adhesive layer 2 consists of a relatively thin layer, which is only applied under the ceramic plate and has a negligible thickness.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Telephone Set Structure (AREA)
  • Transducers For Ultrasonic Waves (AREA)
EP83108429A 1982-08-30 1983-08-26 Transducteur piézoélectrique Withdrawn EP0104457A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3232177 1982-08-30
DE19823232177 DE3232177A1 (de) 1982-08-30 1982-08-30 Piezoelektrischer wandler

Publications (2)

Publication Number Publication Date
EP0104457A2 true EP0104457A2 (fr) 1984-04-04
EP0104457A3 EP0104457A3 (fr) 1986-01-29

Family

ID=6172020

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83108429A Withdrawn EP0104457A3 (fr) 1982-08-30 1983-08-26 Transducteur piézoélectrique

Country Status (10)

Country Link
US (1) US4494032A (fr)
EP (1) EP0104457A3 (fr)
JP (1) JPS5957600A (fr)
AR (1) AR230356A1 (fr)
AU (1) AU1850383A (fr)
BR (1) BR8304684A (fr)
DE (1) DE3232177A1 (fr)
FI (1) FI833065A7 (fr)
GR (1) GR79371B (fr)
IN (1) IN158400B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2205159A (en) * 1987-05-27 1988-11-30 Diehl Gmbh & Co An electronic acoustic signal transmitter mounted on a printed circuit board
EP0451306A1 (fr) * 1990-04-09 1991-10-16 Siemens Aktiengesellschaft Transducteur strafifié d'ultrason à sélectivité de fréquence

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134748B (en) * 1983-01-17 1986-06-25 Victor Company Of Japan Loudspeaker diaphragm
DE3510346A1 (de) * 1985-03-22 1986-10-02 Fernsprech- und Signalbau KG Schüler & Vershoven, 4300 Essen Dynamischer, akustischer wandler
DE3702378A1 (de) * 1987-01-27 1988-08-04 Siemens Ag Piezoelektrischer wandler fuer schwerhoerige
DE3825973A1 (de) * 1988-07-29 1990-02-01 Siemens Ag Elektroakustischer einheitswandler
US5363452A (en) * 1992-05-19 1994-11-08 Shure Brothers, Inc. Microphone for use in a vibrating environment
KR100554874B1 (ko) * 2004-01-02 2006-02-24 (주)오리엔트텔레콤 압전 스피커
WO2012096048A1 (fr) * 2011-01-14 2012-07-19 株式会社村田製作所 Composant vibrant piézoélectrique
JP5638170B2 (ja) * 2012-09-26 2014-12-10 京セラ株式会社 音響発生器、音響発生装置及び電子機器
KR20240119708A (ko) * 2023-01-30 2024-08-06 엘지디스플레이 주식회사 장치

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1299724B (de) * 1966-10-21 1969-07-24 Siemens Ag Mikrophonkapsel mit einem piezoelektrischen Wandlerelement und einem Transistorverstaerker
US3761956A (en) * 1970-10-01 1973-09-25 Nittan Co Ltd Sound generating device
US3708702A (en) * 1970-12-02 1973-01-02 Siemens Ag Electroacoustic transducer
US3970879A (en) * 1971-12-29 1976-07-20 Sumitomo Electric Industries, Ltd. Piezoelectric acoustic device
US4156156A (en) * 1977-08-18 1979-05-22 P. R. Mallory & Co. Inc. Method for reducing the resonant frequency of a piezoelectric transducer
DE2831377A1 (de) * 1978-07-17 1980-01-31 Siemens Ag Elektroakustischer wandler
DE2831401C2 (de) * 1978-07-17 1987-03-19 Siemens AG, 1000 Berlin und 8000 München Elektroakustischer Wandler
US4190782A (en) * 1978-07-24 1980-02-26 Telex Communications, Inc. Piezoelectric ceramic resonant transducer with stable frequency
DE3005708C2 (de) * 1980-02-15 1984-08-30 Siemens AG, 1000 Berlin und 8000 München Wandlerplatte für piezoelektrische Wandler
DE3007808A1 (de) * 1980-02-29 1981-09-10 Siemens AG, 1000 Berlin und 8000 München Elektroakustischer wandler
JPS56140282A (en) * 1980-04-03 1981-11-02 Sharp Corp Electronic wristwatch with vocal information
DE3107344A1 (de) * 1981-02-26 1982-11-18 Siemens AG, 1000 Berlin und 8000 München Anordnung zur frequenzgangverbesserung von elektroakustischen wandlern
DE3107293C2 (de) * 1981-02-26 1987-05-14 Siemens AG, 1000 Berlin und 8000 München Anordnung zur Frequenzgangverbesserung für elektroakustische Wandler

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2205159A (en) * 1987-05-27 1988-11-30 Diehl Gmbh & Co An electronic acoustic signal transmitter mounted on a printed circuit board
GB2205159B (en) * 1987-05-27 1991-07-03 Diehl Gmbh & Co An electronic acoustic signal transmitter
EP0451306A1 (fr) * 1990-04-09 1991-10-16 Siemens Aktiengesellschaft Transducteur strafifié d'ultrason à sélectivité de fréquence
US5457353A (en) * 1990-04-09 1995-10-10 Siemens Aktiengesellschaft Frequency-selective ultrasonic sandwich transducer

Also Published As

Publication number Publication date
BR8304684A (pt) 1984-04-10
DE3232177A1 (de) 1984-03-01
GR79371B (fr) 1984-10-22
FI833065L (fi) 1984-03-01
JPS5957600A (ja) 1984-04-03
AU1850383A (en) 1984-03-08
US4494032A (en) 1985-01-15
FI833065A0 (fi) 1983-08-29
AR230356A1 (es) 1984-03-01
IN158400B (fr) 1986-11-08
FI833065A7 (fi) 1984-03-01
EP0104457A3 (fr) 1986-01-29

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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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE IT NL

PUAL Search report despatched

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AK Designated contracting states

Designated state(s): BE IT NL

17P Request for examination filed

Effective date: 19860919

17Q First examination report despatched

Effective date: 19871208

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19880301

RIN1 Information on inventor provided before grant (corrected)

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