JPS55140398A - Diaphragm - Google Patents

Diaphragm

Info

Publication number
JPS55140398A
JPS55140398A JP4846779A JP4846779A JPS55140398A JP S55140398 A JPS55140398 A JP S55140398A JP 4846779 A JP4846779 A JP 4846779A JP 4846779 A JP4846779 A JP 4846779A JP S55140398 A JPS55140398 A JP S55140398A
Authority
JP
Japan
Prior art keywords
core material
surface materials
axis direction
ring
rings
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
JP4846779A
Other languages
Japanese (ja)
Other versions
JPS6217920B2 (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 JP4846779A priority Critical patent/JPS55140398A/en
Publication of JPS55140398A publication Critical patent/JPS55140398A/en
Publication of JPS6217920B2 publication Critical patent/JPS6217920B2/ja
Granted 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

Abstract

PURPOSE:To prevent chattering sound from being generated, by arranging a reinforcing material in the part surrounded by the outside circumference of the core material and both surface materials and by sticking the part around surface materials to the reinforcing material. CONSTITUTION:The outside circumference of core material 1 of honeycomb structure is cut vertically, and two rings 5 and 6 are arranged coaxially in the part surrounded by core material 1 and surface materials 2 and 3, and the thickness of inside ring 5 in the axis direction is smaller than that of core material 1, and the thickness of outside ring 6 in the axis direction is smaller than of ring 5, and surface materials 2 and 3 are stuck to end faces of rings 5 and 6 in the axis direction closely. Thus, chattering is not generated even if honeycomb or corrugation structure is used as core material 1.
JP4846779A 1979-04-18 1979-04-18 Diaphragm Granted JPS55140398A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4846779A JPS55140398A (en) 1979-04-18 1979-04-18 Diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4846779A JPS55140398A (en) 1979-04-18 1979-04-18 Diaphragm

Publications (2)

Publication Number Publication Date
JPS55140398A true JPS55140398A (en) 1980-11-01
JPS6217920B2 JPS6217920B2 (en) 1987-04-20

Family

ID=12804173

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4846779A Granted JPS55140398A (en) 1979-04-18 1979-04-18 Diaphragm

Country Status (1)

Country Link
JP (1) JPS55140398A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008132170A1 (en) * 2007-04-26 2008-11-06 Airbus Operations Gmbh Flat speaker

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4996174A (en) * 1973-01-24 1974-09-11
JPS5359819U (en) * 1976-10-22 1978-05-22

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4996174A (en) * 1973-01-24 1974-09-11
JPS5359819U (en) * 1976-10-22 1978-05-22

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008132170A1 (en) * 2007-04-26 2008-11-06 Airbus Operations Gmbh Flat speaker
US8989430B2 (en) 2007-04-26 2015-03-24 Airbus Operations Gmbh Flat speaker

Also Published As

Publication number Publication date
JPS6217920B2 (en) 1987-04-20

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