WO2008129695A1 - Method of producing diaphragm and speaker and electronic device using the diaphragm - Google Patents

Method of producing diaphragm and speaker and electronic device using the diaphragm Download PDF

Info

Publication number
WO2008129695A1
WO2008129695A1 PCT/JP2007/068036 JP2007068036W WO2008129695A1 WO 2008129695 A1 WO2008129695 A1 WO 2008129695A1 JP 2007068036 W JP2007068036 W JP 2007068036W WO 2008129695 A1 WO2008129695 A1 WO 2008129695A1
Authority
WO
WIPO (PCT)
Prior art keywords
diaphragm
face
mold
molds
convex part
Prior art date
Application number
PCT/JP2007/068036
Other languages
French (fr)
Japanese (ja)
Inventor
Masashi Kawabe
Hironori Tabata
Shinichi Yamanaka
Koji Sano
Original Assignee
Panasonic Corporation
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 Panasonic Corporation filed Critical Panasonic Corporation
Priority to EP07828237A priority Critical patent/EP2124484A1/en
Priority to CN200780052540A priority patent/CN101690268A/en
Publication of WO2008129695A1 publication Critical patent/WO2008129695A1/en

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

A diaphragm being in a definite shape provided with a convex part and a concave part located in the opposite side to the convex part, which has a first face having the convex part and a second face having the concave part and being located in the opposite side to the first face. A first mold has a face which is provided with a molding die having a concave part for forming the convex part and being in a definite shape. A second mold has a face which is provided with a projection part matching to the concave part of the first mold and a duct for jetting air. A resin film is provided between the first and second molds in the state where the first and second molds are located apart from each other. Then, the first and second molds are brought into contact with the resin film. By jetting air from the duct, the resin film is closely pressed against the face of the first mold due to the air pressure. Thus, a diaphragm is obtained. According to this production method, diaphragms can be produced at a high productivity.
PCT/JP2007/068036 2007-04-12 2007-09-18 Method of producing diaphragm and speaker and electronic device using the diaphragm WO2008129695A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP07828237A EP2124484A1 (en) 2007-04-12 2007-09-18 Method of producing diaphragm and speaker and electronic device using the diaphragm
CN200780052540A CN101690268A (en) 2007-04-12 2007-09-18 Method of producing diaphragm and speaker and electronic device using the diaphragm

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007104774A JP4367515B2 (en) 2007-04-12 2007-04-12 Manufacturing method of speaker diaphragm and speaker diaphragm, speaker and electronic device formed thereby
JP2007-104774 2007-04-12

Publications (1)

Publication Number Publication Date
WO2008129695A1 true WO2008129695A1 (en) 2008-10-30

Family

ID=39875236

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/068036 WO2008129695A1 (en) 2007-04-12 2007-09-18 Method of producing diaphragm and speaker and electronic device using the diaphragm

Country Status (4)

Country Link
EP (1) EP2124484A1 (en)
JP (1) JP4367515B2 (en)
CN (1) CN101690268A (en)
WO (1) WO2008129695A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5109959B2 (en) * 2008-12-18 2012-12-26 パナソニック株式会社 Manufacturing method of speaker parts
CN105681998B (en) * 2016-01-12 2019-03-29 常州阿木奇声学科技有限公司 A kind of vibrating diaphragm manufacture craft of moving iron unit
CN107948913B (en) * 2017-12-25 2020-06-26 厦门东声电子有限公司 Processing method of sound film assembly, sound film assembly and micro loudspeaker
CN109040915B (en) * 2018-07-04 2020-07-24 歌尔股份有限公司 Vibrating diaphragm forming die and vibrating diaphragm forming method
CN110996245B (en) * 2019-11-11 2021-02-19 歌尔股份有限公司 Vibrating diaphragm forming die and vibrating diaphragm forming method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6033799A (en) * 1983-08-04 1985-02-21 Onkyo Corp Plastic diaphragm and its manufacture
JPH03133616A (en) 1989-10-20 1991-06-06 Hitachi Ltd Injection mold

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6033799A (en) * 1983-08-04 1985-02-21 Onkyo Corp Plastic diaphragm and its manufacture
JPH03133616A (en) 1989-10-20 1991-06-06 Hitachi Ltd Injection mold

Also Published As

Publication number Publication date
JP2008263416A (en) 2008-10-30
EP2124484A1 (en) 2009-11-25
JP4367515B2 (en) 2009-11-18
CN101690268A (en) 2010-03-31

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