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WO2000067525A3 - Piezoelectric vibration exciter - Google Patents

Piezoelectric vibration exciter Download PDF

Info

Publication number
WO2000067525A3
WO2000067525A3 PCT/GB2000/001485 GB0001485W WO0067525A3 WO 2000067525 A3 WO2000067525 A3 WO 2000067525A3 GB 0001485 W GB0001485 W GB 0001485W WO 0067525 A3 WO0067525 A3 WO 0067525A3
Authority
WO
WIPO (PCT)
Prior art keywords
piezoelectric vibration
vibration exciter
plate
piezoelectric device
vibrate
Prior art date
Application number
PCT/GB2000/001485
Other languages
French (fr)
Other versions
WO2000067525A2 (en
Inventor
Henry Azima
Original Assignee
New Transducers Ltd
Henry Azima
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 New Transducers Ltd, Henry Azima filed Critical New Transducers Ltd
Priority to EP00927419A priority Critical patent/EP1172019B1/en
Priority to DE60005329T priority patent/DE60005329D1/en
Priority to AU45824/00A priority patent/AU4582400A/en
Priority to JP2000614776A priority patent/JP2002543727A/en
Publication of WO2000067525A2 publication Critical patent/WO2000067525A2/en
Publication of WO2000067525A3 publication Critical patent/WO2000067525A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/26—Damping by means acting directly on free portion of diaphragm or cone

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

A curved piezoelectric device (13) is attached to a plate (11) to vibrate the plate. Mass-loading is applied to at least one free end (14) of the piezoelectric device to increase output.
PCT/GB2000/001485 1999-04-29 2000-04-28 Piezoelectric vibration exciter WO2000067525A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP00927419A EP1172019B1 (en) 1999-04-29 2000-04-28 Piezoelecric vibration exciter
DE60005329T DE60005329D1 (en) 1999-04-29 2000-04-28 PIEZOELECTRIC VIBRATION EXCITER
AU45824/00A AU4582400A (en) 1999-04-29 2000-04-28 Vibration exciter
JP2000614776A JP2002543727A (en) 1999-04-29 2000-04-28 Vibration exciter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9910216.2 1999-04-29
GBGB9910216.2A GB9910216D0 (en) 1999-04-29 1999-04-29 Vibration exciter

Publications (2)

Publication Number Publication Date
WO2000067525A2 WO2000067525A2 (en) 2000-11-09
WO2000067525A3 true WO2000067525A3 (en) 2001-03-08

Family

ID=10852721

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2000/001485 WO2000067525A2 (en) 1999-04-29 2000-04-28 Piezoelectric vibration exciter

Country Status (8)

Country Link
EP (1) EP1172019B1 (en)
JP (1) JP2002543727A (en)
CN (1) CN1343438A (en)
AU (1) AU4582400A (en)
DE (1) DE60005329D1 (en)
GB (1) GB9910216D0 (en)
TW (1) TW472497B (en)
WO (1) WO2000067525A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009001769A1 (en) * 2007-06-27 2008-12-31 Alps Electric Co., Ltd. Electrostriction actuator module
DE102021213003A1 (en) 2021-11-18 2023-05-25 Continental Automotive Technologies GmbH Transducer for generating sound waves and display

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5819099A (en) * 1981-07-27 1983-02-03 Murata Mfg Co Ltd Piezoelectric type loud speaker
US4654554A (en) * 1984-09-05 1987-03-31 Sawafuji Dynameca Co., Ltd. Piezoelectric vibrating elements and piezoelectric electroacoustic transducers
US5309519A (en) * 1988-10-07 1994-05-03 The Whitaker Corporation Electroacoustic novelties
WO1997009842A2 (en) * 1995-09-02 1997-03-13 New Transducers Limited Acoustic device
EP0871345A1 (en) * 1997-04-03 1998-10-14 Sonitron, naamloze Vennootschap Element for reproducing and/or recording sound

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5819099A (en) * 1981-07-27 1983-02-03 Murata Mfg Co Ltd Piezoelectric type loud speaker
US4654554A (en) * 1984-09-05 1987-03-31 Sawafuji Dynameca Co., Ltd. Piezoelectric vibrating elements and piezoelectric electroacoustic transducers
US5309519A (en) * 1988-10-07 1994-05-03 The Whitaker Corporation Electroacoustic novelties
WO1997009842A2 (en) * 1995-09-02 1997-03-13 New Transducers Limited Acoustic device
EP0871345A1 (en) * 1997-04-03 1998-10-14 Sonitron, naamloze Vennootschap Element for reproducing and/or recording sound

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 094 (E - 171) 20 April 1983 (1983-04-20) *

Also Published As

Publication number Publication date
AU4582400A (en) 2000-11-17
GB9910216D0 (en) 1999-06-30
JP2002543727A (en) 2002-12-17
TW472497B (en) 2002-01-11
DE60005329D1 (en) 2003-10-23
EP1172019B1 (en) 2003-09-17
EP1172019A2 (en) 2002-01-16
CN1343438A (en) 2002-04-03
WO2000067525A2 (en) 2000-11-09

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