JPS565000A - Manufacture of edge for speaker diaphragm - Google Patents

Manufacture of edge for speaker diaphragm

Info

Publication number
JPS565000A
JPS565000A JP7972279A JP7972279A JPS565000A JP S565000 A JPS565000 A JP S565000A JP 7972279 A JP7972279 A JP 7972279A JP 7972279 A JP7972279 A JP 7972279A JP S565000 A JPS565000 A JP S565000A
Authority
JP
Japan
Prior art keywords
base material
edge
constitution
shaped
manufacture
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.)
Granted
Application number
JP7972279A
Other languages
Japanese (ja)
Other versions
JPS5754999B2 (en
Inventor
Kazuo Tsuchiya
Hiroshi Higashimoto
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 JP7972279A priority Critical patent/JPS565000A/en
Publication of JPS565000A publication Critical patent/JPS565000A/en
Publication of JPS5754999B2 publication Critical patent/JPS5754999B2/ja
Granted 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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands

Landscapes

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

Abstract

PURPOSE:To improve the yield of material by cutting frame-shaped base material, made of plate-shaped thermoplastic foam, into ring-shaped base material. CONSTITUTION:Base material 5 in a nearly-square frame shape with square hole 5a in its center is formed of four plate bodies 3 and made of thermoplastic foam such as polyurethane foam. This base material 5 is cut into ring-shaped edge constitution piece 5b. Next, constitution piece 5b is heated and applied with pressure by the use of forming molds to form an edge. Thus, the base material with the square hole in its center is cut into the edge constitution piece, and consequently waste residual pieces are small in number, so that the yield of the material can be improved.
JP7972279A 1979-06-26 1979-06-26 Manufacture of edge for speaker diaphragm Granted JPS565000A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7972279A JPS565000A (en) 1979-06-26 1979-06-26 Manufacture of edge for speaker diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7972279A JPS565000A (en) 1979-06-26 1979-06-26 Manufacture of edge for speaker diaphragm

Publications (2)

Publication Number Publication Date
JPS565000A true JPS565000A (en) 1981-01-19
JPS5754999B2 JPS5754999B2 (en) 1982-11-20

Family

ID=13698082

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7972279A Granted JPS565000A (en) 1979-06-26 1979-06-26 Manufacture of edge for speaker diaphragm

Country Status (1)

Country Link
JP (1) JPS565000A (en)

Also Published As

Publication number Publication date
JPS5754999B2 (en) 1982-11-20

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