JPS57140100A - Piezoelectric bimorph vibrator - Google Patents

Piezoelectric bimorph vibrator

Info

Publication number
JPS57140100A
JPS57140100A JP2588681A JP2588681A JPS57140100A JP S57140100 A JPS57140100 A JP S57140100A JP 2588681 A JP2588681 A JP 2588681A JP 2588681 A JP2588681 A JP 2588681A JP S57140100 A JPS57140100 A JP S57140100A
Authority
JP
Japan
Prior art keywords
diaphragm
vibrator
projected
piezoelectric
semicircle
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
Application number
JP2588681A
Other languages
Japanese (ja)
Other versions
JPS5924598B2 (en
Inventor
Akio Kotanino
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.)
Hitachi Metals Ltd
Original Assignee
Sumitomo Special Metals Co Ltd
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 Sumitomo Special Metals Co Ltd filed Critical Sumitomo Special Metals Co Ltd
Priority to JP2588681A priority Critical patent/JPS5924598B2/en
Priority to US06/314,873 priority patent/US4454386A/en
Priority to DE3143027A priority patent/DE3143027C2/en
Publication of JPS57140100A publication Critical patent/JPS57140100A/en
Publication of JPS5924598B2 publication Critical patent/JPS5924598B2/en
Expired legal-status Critical Current

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

Landscapes

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

Abstract

PURPOSE:To lower the limit of reproduction at low frequencies and to make the frequency characteristic flat, in assembling a piezoelectric speaker, by specifying the shape of a piezoelectric vibrator. CONSTITUTION:A semicircle piezoelectric plate 2 is sticked to a metallic plate 1 in which a rectangular shape is projected at a semicircle, and the rectangular part is fixed to, e.g., a vibration diaphragm frame 3 as a fixed side, and another end with wider side is taken as a diaphragm tip. The coupling point between a diaphragm 4 and an vibrator is taken as an auxiliary vibration part 5 projected to a straight line part of the diaphragm tip. Thus, the reproduced frequency characteristics can be made flat by this formation. Projections 6 and 7 projected partially longer than the part 5 are provided at the diaphragm tip of the vibrator, allowing to lower the lower limit of reproduction of low frequencies.
JP2588681A 1980-10-29 1981-02-23 piezoelectric bimorph vibrator Expired JPS5924598B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2588681A JPS5924598B2 (en) 1981-02-23 1981-02-23 piezoelectric bimorph vibrator
US06/314,873 US4454386A (en) 1980-10-29 1981-10-26 Piezoelectric transducer for piezoelectric loud speaker
DE3143027A DE3143027C2 (en) 1980-10-29 1981-10-29 Piezoelectric converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2588681A JPS5924598B2 (en) 1981-02-23 1981-02-23 piezoelectric bimorph vibrator

Publications (2)

Publication Number Publication Date
JPS57140100A true JPS57140100A (en) 1982-08-30
JPS5924598B2 JPS5924598B2 (en) 1984-06-11

Family

ID=12178261

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2588681A Expired JPS5924598B2 (en) 1980-10-29 1981-02-23 piezoelectric bimorph vibrator

Country Status (1)

Country Link
JP (1) JPS5924598B2 (en)

Also Published As

Publication number Publication date
JPS5924598B2 (en) 1984-06-11

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