JPS57107698A - Piezoelectric type speaker - Google Patents

Piezoelectric type speaker

Info

Publication number
JPS57107698A
JPS57107698A JP18489880A JP18489880A JPS57107698A JP S57107698 A JPS57107698 A JP S57107698A JP 18489880 A JP18489880 A JP 18489880A JP 18489880 A JP18489880 A JP 18489880A JP S57107698 A JPS57107698 A JP S57107698A
Authority
JP
Japan
Prior art keywords
oscillation
center
diaphragm
film
sound
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.)
Pending
Application number
JP18489880A
Other languages
Japanese (ja)
Inventor
Yoshihiko Nakagawa
Tsutomu Yoshii
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.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing 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 Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Priority to JP18489880A priority Critical patent/JPS57107698A/en
Priority to US06/331,586 priority patent/US4430529A/en
Publication of JPS57107698A publication Critical patent/JPS57107698A/en
Pending 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

Abstract

PURPOSE:To increase sound pressure level and to decrease sound distortion, by making standstill the oscillation at the center part of a bending oscillation type piezoelectric vibration diaphragm fitted to an oscillation film. CONSTITUTION:A bending type piezoelectric vibration diaphragm 5 is sticked to the center of an oscillation film 4. The oscillation film 4 is supported and fixed with a pair of frames 6, 7 with a tension. The frame 6 at sound discharge side is constituted with a ring with bottom, and the center of the bottom is provided with a support notch 6a with thinned tip and a plurality of sound discharge holes 6b are provided other than the center with comparatively large size. Another frame 7 is constituted also as ring shape with bottom, a support projection 7a with thinned tip is provided at the center of the bottom, and a plurality of small holes 7b are provided at the surrounding. The center part of the piezoelectric diaphragm 5 including the diaphragm film 4 at supports projections 6a, 7a of both the frames 6, 7 is clipped, and the oscillation of the center part being a maximum position of amplitude of the piezoelectric diaphragm 5 is in standstill.
JP18489880A 1980-12-24 1980-12-24 Piezoelectric type speaker Pending JPS57107698A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP18489880A JPS57107698A (en) 1980-12-24 1980-12-24 Piezoelectric type speaker
US06/331,586 US4430529A (en) 1980-12-24 1981-12-17 Piezoelectric loudspeaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18489880A JPS57107698A (en) 1980-12-24 1980-12-24 Piezoelectric type speaker

Publications (1)

Publication Number Publication Date
JPS57107698A true JPS57107698A (en) 1982-07-05

Family

ID=16161248

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18489880A Pending JPS57107698A (en) 1980-12-24 1980-12-24 Piezoelectric type speaker

Country Status (1)

Country Link
JP (1) JPS57107698A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60124198U (en) * 1984-01-26 1985-08-21 株式会社村田製作所 piezoelectric speaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60124198U (en) * 1984-01-26 1985-08-21 株式会社村田製作所 piezoelectric speaker

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