JPS55140394A - Diaphragm - Google Patents

Diaphragm

Info

Publication number
JPS55140394A
JPS55140394A JP4846579A JP4846579A JPS55140394A JP S55140394 A JPS55140394 A JP S55140394A JP 4846579 A JP4846579 A JP 4846579A JP 4846579 A JP4846579 A JP 4846579A JP S55140394 A JPS55140394 A JP S55140394A
Authority
JP
Japan
Prior art keywords
diaphragm
sound pressure
pressure characteristic
core material
foamed material
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
JP4846579A
Other languages
English (en)
Inventor
Koshin Shimada
Tatsuo Fukuyama
Takafumi Ueno
Kenichi Takahashi
Morihiro Miyazaki
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP4846579A priority Critical patent/JPS55140394A/ja
Publication of JPS55140394A publication Critical patent/JPS55140394A/ja
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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
JP4846579A 1979-04-18 1979-04-18 Diaphragm Pending JPS55140394A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4846579A JPS55140394A (en) 1979-04-18 1979-04-18 Diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4846579A JPS55140394A (en) 1979-04-18 1979-04-18 Diaphragm

Publications (1)

Publication Number Publication Date
JPS55140394A true JPS55140394A (en) 1980-11-01

Family

ID=12804113

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4846579A Pending JPS55140394A (en) 1979-04-18 1979-04-18 Diaphragm

Country Status (1)

Country Link
JP (1) JPS55140394A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6055191U (ja) * 1983-09-21 1985-04-18 松下電器産業株式会社 平面スピ−カ
CN114827874A (zh) * 2021-01-29 2022-07-29 歌尔股份有限公司 振膜及发声装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6055191U (ja) * 1983-09-21 1985-04-18 松下電器産業株式会社 平面スピ−カ
JPH0241987Y2 (ja) * 1983-09-21 1990-11-08
CN114827874A (zh) * 2021-01-29 2022-07-29 歌尔股份有限公司 振膜及发声装置

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