JPS5657393A - Diaphragm for acoustic apparatus - Google Patents

Diaphragm for acoustic apparatus

Info

Publication number
JPS5657393A
JPS5657393A JP13385979A JP13385979A JPS5657393A JP S5657393 A JPS5657393 A JP S5657393A JP 13385979 A JP13385979 A JP 13385979A JP 13385979 A JP13385979 A JP 13385979A JP S5657393 A JPS5657393 A JP S5657393A
Authority
JP
Japan
Prior art keywords
diaphragm
cellulose
dome
young
modulus
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
JP13385979A
Other languages
Japanese (ja)
Inventor
Kazuo Tsuchiya
Fumio Kawahara
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.)
Mogami Denki Corp
Pioneer Corp
Original Assignee
Mogami Denki Corp
Pioneer Electronic Corp
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 Mogami Denki Corp, Pioneer Electronic Corp filed Critical Mogami Denki Corp
Priority to JP13385979A priority Critical patent/JPS5657393A/en
Publication of JPS5657393A publication Critical patent/JPS5657393A/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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/127—Non-planar diaphragms or cones dome-shaped
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/021—Diaphragms comprising cellulose-like materials, e.g. wood, paper, linen

Landscapes

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

Abstract

PURPOSE:To increase the Young's modulus as well as realize a selection for the internal loss, by using the sheet or film of the triacetyl cellulose for the material of a diaphragm. CONSTITUTION:The film of triacetyle cellulose having a proper area is formed into e.g. a dome-shaped form to obtain the triacetyle cellulose diaphragm component 1. This component is then formed through the mold 2 with addition of the heating and pressing processes to obtain the dome-shaped diaphragm 3. Furthermore, the diaphragm 3 is cooled down by the forcible cooling device after being taken out of the mold. Thus the hardness of the diaphragm is varied during the period from the working temperature down to the normal temperature. As a result, the Young's modulus is increased, at the same time reducing the internal loss down to a proper level.
JP13385979A 1979-10-17 1979-10-17 Diaphragm for acoustic apparatus Pending JPS5657393A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13385979A JPS5657393A (en) 1979-10-17 1979-10-17 Diaphragm for acoustic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13385979A JPS5657393A (en) 1979-10-17 1979-10-17 Diaphragm for acoustic apparatus

Publications (1)

Publication Number Publication Date
JPS5657393A true JPS5657393A (en) 1981-05-19

Family

ID=15114704

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13385979A Pending JPS5657393A (en) 1979-10-17 1979-10-17 Diaphragm for acoustic apparatus

Country Status (1)

Country Link
JP (1) JPS5657393A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52145024A (en) * 1976-03-19 1977-12-02 Datsudorei Haautsudo Hatsuji Electroacoustic transmitter vibrating plate

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52145024A (en) * 1976-03-19 1977-12-02 Datsudorei Haautsudo Hatsuji Electroacoustic transmitter vibrating plate

Similar Documents

Publication Publication Date Title
OA06143A (en) Process for removing flatulent sugars from soybeans.
JPS55137797A (en) Diaphragm for electroacoustic transducer
JPS53137129A (en) Vibratory diaphragm for acousitic device
FR2455568B1 (en) PROCESS FOR THE PREPARATION OF 2,3-DIMETHYLBUTENE-2
JPS52108770A (en) Manufacture for direct heat type cathode
JPS5720771A (en) Fixing roller for copying machine
BE884206A (en) PROCESS FOR THE PREPARATION OF 3- (4) -FORMYL-TRICYCLO- (5,2,1,02,6) -DECENE-8
ZA774753B (en) Process for the manufacture of 2,9-dioxatricyclo(4,3,1,3 3'7)decanen
JPS51146584A (en) A process for preparing sheet with wrinkles on the surface
JPS5434091A (en) Constructing device for long material with offset
YU59280A (en) Process for obtaining n-(aryl-thiocarbamoyl)-2-amino-1h-isoindole,1,3-(2h)-diones
JPS5429612A (en) Magnetic sheet
JPS5392074A (en) Jointing method of sticking preventing belt
RO78476A (en) PROCESS FOR THE PREPARATION OF 3'-PHENYL-SPIRO (ISOBENZOFURAN-1 (3H), 5 '(4'H) -ISOXAZOLE) -3-ONE
JPS53117840A (en) Cooling instrument
IL50671A (en) Process for the preparation of n1-(2'furanidyl)-5-fluoro-uracil and bis-2'-furanidylether as intermediate therefor
JPS534897A (en) High-molecular piezo-electric material
JPS5350727A (en) Manufacture of acoustic diaphragm
JPS52116710A (en) Heat treatment for removing residual stress of clad plate
JPS5385428A (en) Thermal developing device
JPS51120355A (en) Process for making diaphragm by photoetching
IE801737L (en) (20 s) 3ó-aminoacetamido-5ó-pregnan-20-ol
JPS53104022A (en) Heater equipment for engine air inlet heating
IL54973A (en) Process for the preparation of n,n-dimethyl(or n-methyl)-3-(p-bromophenyl)3-(3-pyridyl)allylamine and novel 3-(p-bromophenyl)-3-(3-pyridyl)3-hydroxyprop-1-ene intermediate therefor
JPS543719A (en) Automotive interior finish material