JPS5451818A - Diaphragm for speakers - Google Patents

Diaphragm for speakers

Info

Publication number
JPS5451818A
JPS5451818A JP11841577A JP11841577A JPS5451818A JP S5451818 A JPS5451818 A JP S5451818A JP 11841577 A JP11841577 A JP 11841577A JP 11841577 A JP11841577 A JP 11841577A JP S5451818 A JPS5451818 A JP S5451818A
Authority
JP
Japan
Prior art keywords
woven fabric
diaphragm
lightweightness
acrylonitrile
synthetic fibers
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
JP11841577A
Other languages
Japanese (ja)
Inventor
Hirotoshi Niiguchi
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 JP11841577A priority Critical patent/JPS5451818A/en
Publication of JPS5451818A publication Critical patent/JPS5451818A/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

Landscapes

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

Abstract

PURPOSE:To obtain a diaphragm of high rigidity and lightweightness by impregnating the high polymer resin composed of copolymer of vinylidene chloride and acrylonitrile on a non-woven fabric then hot-pressing the same. CONSTITUTION:The foaming agent which comprises copolymerization of vinylidene chloride and acrylonitrile at a ratio of, e.g. 7:3, is impregnated in a non-woven fabric composed of synthetic fibers such as polyester, nylon and polyvinyl chloride, etc., or a non-woven fabric composed of a blend of these synthetic fibers and natural fibers such as cotton, wool, etc., after which said non-woven fabric is expanded and molded to the diaphragm for cone type speakers with a hot press or the like. Thereby, the speaker of lightweightness, high rigidity, less distortions and flat output sound pressure frequency characteristics may be obtained.
JP11841577A 1977-09-30 1977-09-30 Diaphragm for speakers Pending JPS5451818A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11841577A JPS5451818A (en) 1977-09-30 1977-09-30 Diaphragm for speakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11841577A JPS5451818A (en) 1977-09-30 1977-09-30 Diaphragm for speakers

Publications (1)

Publication Number Publication Date
JPS5451818A true JPS5451818A (en) 1979-04-24

Family

ID=14736075

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11841577A Pending JPS5451818A (en) 1977-09-30 1977-09-30 Diaphragm for speakers

Country Status (1)

Country Link
JP (1) JPS5451818A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58195397A (en) * 1982-05-10 1983-11-14 Onkyo Corp Manufacture of speaker diaphragm

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5040544A (en) * 1973-07-16 1975-04-14
JPS50105125A (en) * 1974-01-28 1975-08-19

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5040544A (en) * 1973-07-16 1975-04-14
JPS50105125A (en) * 1974-01-28 1975-08-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58195397A (en) * 1982-05-10 1983-11-14 Onkyo Corp Manufacture of speaker diaphragm

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