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JPS57206198A - Production of sound composite diaphragm - Google Patents

Production of sound composite diaphragm

Info

Publication number
JPS57206198A
JPS57206198A JP9169081A JP9169081A JPS57206198A JP S57206198 A JPS57206198 A JP S57206198A JP 9169081 A JP9169081 A JP 9169081A JP 9169081 A JP9169081 A JP 9169081A JP S57206198 A JPS57206198 A JP S57206198A
Authority
JP
Japan
Prior art keywords
foil
layers
sheet
layer
heating
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
JP9169081A
Other languages
Japanese (ja)
Inventor
Jun Matsuda
Tamon Ikeda
Toshio Suzuki
Nobuhiro Fujiwara
Kazuhiko Soda
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP9169081A priority Critical patent/JPS57206198A/en
Publication of JPS57206198A publication Critical patent/JPS57206198A/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)
  • Adhesives Or Adhesive Processes (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

PURPOSE:To shorten the heating time and to save the energy required for the heating process, by heating directly the metallic foils on both surfaces of a diaphragm substrate by the heating of electromagnetic induction. CONSTITUTION:An adhesive layer 3 containing a heat fusing adhesive sheet, an urethane sheet 2, an adhesive sheet 3' containing a heat fusing adhesive sheet, and a metallic foil 4 are laminated and put between the holding plates are stuck on the opposite faces of the press molds of an electromagnetic induction heater. Then both the press molds are put close to each other, and at the same time a magnetic field generated by the electromagnetic induction heater is applied. An eddy current is produced to the foil 4 by a magnetic field formed by the above- mentioned magnetic filed. Then the foil 4 is heated to fuse the layers 3' and 3. The layers 3' and 3 are then cooled, and the layer 3 is stuck to the sheet 2. Furthermore the foil 4 is adhered to the sheet 2 via the layer 3' to obtained a unified metallic foil member 13. The member 13 is attached to both surfaces of a diaphragm substrate 1 with the layer 3 side used as a contact surface and then pressed. Thus an eddy current is produced in the foil 4, and the foil 4 is heated to fuse the layers 3' and 3. After this, the layers 3' and 3 are cooled to be adhered to each other.
JP9169081A 1981-06-15 1981-06-15 Production of sound composite diaphragm Pending JPS57206198A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9169081A JPS57206198A (en) 1981-06-15 1981-06-15 Production of sound composite diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9169081A JPS57206198A (en) 1981-06-15 1981-06-15 Production of sound composite diaphragm

Publications (1)

Publication Number Publication Date
JPS57206198A true JPS57206198A (en) 1982-12-17

Family

ID=14033495

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9169081A Pending JPS57206198A (en) 1981-06-15 1981-06-15 Production of sound composite diaphragm

Country Status (1)

Country Link
JP (1) JPS57206198A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62101675A (en) * 1985-10-29 1987-05-12 Horie Kinzoku Kogyo Kk Bonding of plural members with electromagnetic induction adhesive
JPS6488504A (en) * 1987-09-30 1989-04-03 Alps Electric Co Ltd Optical lens and its manufacture
JPH0372131A (en) * 1989-08-11 1991-03-27 Tajima Inc Method for fitting synthetic resin waterproof sheet to bed

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62101675A (en) * 1985-10-29 1987-05-12 Horie Kinzoku Kogyo Kk Bonding of plural members with electromagnetic induction adhesive
JPH048467B2 (en) * 1985-10-29 1992-02-17
JPS6488504A (en) * 1987-09-30 1989-04-03 Alps Electric Co Ltd Optical lens and its manufacture
JPH0372131A (en) * 1989-08-11 1991-03-27 Tajima Inc Method for fitting synthetic resin waterproof sheet to bed

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