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JPS56129497A - Diaphragm plate for speaker - Google Patents

Diaphragm plate for speaker

Info

Publication number
JPS56129497A
JPS56129497A JP3227780A JP3227780A JPS56129497A JP S56129497 A JPS56129497 A JP S56129497A JP 3227780 A JP3227780 A JP 3227780A JP 3227780 A JP3227780 A JP 3227780A JP S56129497 A JPS56129497 A JP S56129497A
Authority
JP
Japan
Prior art keywords
diaphragm plate
sheet
speaker
core member
uncured
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
JP3227780A
Other languages
Japanese (ja)
Inventor
Satoshi Takayama
Kosaku Murata
Yoshiaki Maruno
Mitsuru Yashiro
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 JP3227780A priority Critical patent/JPS56129497A/en
Publication of JPS56129497A publication Critical patent/JPS56129497A/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
    • 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
    • H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Laminated Bodies (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

PURPOSE:To establish diaphragm plate for speaker with light weight but high rigidity, by using the core member 5 made of the sheet in which uncured fenol resin powder is mixed in craft pulp, and aluminum foil. CONSTITUTION:Uncured fenol resin powder is mixed to craft pulp by 10wt% to form the sheet 50mu thick through screening, and this sheet is cut and the tape about 5mm. wide is made. The core raw material 3 of the shape as shown in Figure is formed, and a number of materials are bonded to obtain the core member 5. Aluminum foils 6, 6' 30mu thick are bonded on both the surfaces of the core member 5 thus obtained, allowing to obtain the diaphragm plate.
JP3227780A 1980-03-13 1980-03-13 Diaphragm plate for speaker Pending JPS56129497A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3227780A JPS56129497A (en) 1980-03-13 1980-03-13 Diaphragm plate for speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3227780A JPS56129497A (en) 1980-03-13 1980-03-13 Diaphragm plate for speaker

Publications (1)

Publication Number Publication Date
JPS56129497A true JPS56129497A (en) 1981-10-09

Family

ID=12354477

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3227780A Pending JPS56129497A (en) 1980-03-13 1980-03-13 Diaphragm plate for speaker

Country Status (1)

Country Link
JP (1) JPS56129497A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54133125A (en) * 1978-04-06 1979-10-16 Matsushita Electric Ind Co Ltd Diaphragm for speaker

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54133125A (en) * 1978-04-06 1979-10-16 Matsushita Electric Ind Co Ltd Diaphragm for speaker

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