JPS56156097A - Formation of speaker diaphragm - Google Patents

Formation of speaker diaphragm

Info

Publication number
JPS56156097A
JPS56156097A JP5859880A JP5859880A JPS56156097A JP S56156097 A JPS56156097 A JP S56156097A JP 5859880 A JP5859880 A JP 5859880A JP 5859880 A JP5859880 A JP 5859880A JP S56156097 A JPS56156097 A JP S56156097A
Authority
JP
Japan
Prior art keywords
molding tool
groove
diaphragm
sheet
outer circumference
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
JP5859880A
Other languages
Japanese (ja)
Inventor
Kazuyuki Fukui
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.)
Pioneer Corp
Original Assignee
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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP5859880A priority Critical patent/JPS56156097A/en
Publication of JPS56156097A publication Critical patent/JPS56156097A/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
    • 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)

Abstract

PURPOSE:To avoid a malformation of a sheet to be formed to a diaphragm, by forming a groove having a V-shaped section at the circumference of a molding tool and securing a close adhesion for the part of the sheet to be put to the groove by means of a ventilation. CONSTITUTION:A sheet material 9 is put on a molding tool, and the outer circumference of the sheet material is pressed by an upper molding tool 10 and an outer circumference press mold 3. Then the tool 10 and a lower molding tool are heated up so that the material 9 can be deformed properly. In this case, a ventilation is carried out through the spaces 7 and 8, and thus the material 9 is adsorbed at its fringe part at a groove 6 and while being pressed at the outer circumference to be positioned. Then the center part of material 9 is adsorbed by a slit 4. For a diaphragm, the areas corresponding to a center molding tool 1 and the mold 3 plus the area corresponding to the V-shaped groove 6 are cut off. Thus the area corresponding to the part from the slit 4 to the top part 2a of a body molding tool 2 is used for a diaphragm.
JP5859880A 1980-05-06 1980-05-06 Formation of speaker diaphragm Pending JPS56156097A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5859880A JPS56156097A (en) 1980-05-06 1980-05-06 Formation of speaker diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5859880A JPS56156097A (en) 1980-05-06 1980-05-06 Formation of speaker diaphragm

Publications (1)

Publication Number Publication Date
JPS56156097A true JPS56156097A (en) 1981-12-02

Family

ID=13088933

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5859880A Pending JPS56156097A (en) 1980-05-06 1980-05-06 Formation of speaker diaphragm

Country Status (1)

Country Link
JP (1) JPS56156097A (en)

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