JPS55149595A - Molding method of diaphragm plate for speaker - Google Patents

Molding method of diaphragm plate for speaker

Info

Publication number
JPS55149595A
JPS55149595A JP5727179A JP5727179A JPS55149595A JP S55149595 A JPS55149595 A JP S55149595A JP 5727179 A JP5727179 A JP 5727179A JP 5727179 A JP5727179 A JP 5727179A JP S55149595 A JPS55149595 A JP S55149595A
Authority
JP
Japan
Prior art keywords
diaphragm plate
molding
speaker
cone
edge
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
JP5727179A
Other languages
Japanese (ja)
Inventor
Hirotoshi Niiguchi
Toru Yamamoto
Mitsuru Yashiro
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP5727179A priority Critical patent/JPS55149595A/en
Publication of JPS55149595A publication Critical patent/JPS55149595A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
    • B29C51/082—Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3418—Loud speakers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/755—Membranes, diaphragms

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 make light the diaphragm plate and to reduce the molding process, by molding each sheet of the cone member and edge member into the diaphragm plate after thermal bonding. CONSTITUTION:The cone member 1 of composite sheet such as high density polyethylene and carbon fiber and the edge member 2 of composite sheet such as high density polyethylene, acrylic fiber, and wooden pulp are used and they are thermally bonded with the heat seal method by the heated metal mold, then the speaker diaphragm plate is made with press molding at cold stage through the use of metal molds 6 and 7. Thus, since no adhesives is used, the diaphragm plate can be light in weight and the molding process can be reduced by molding the edge and cone at a bundle.
JP5727179A 1979-05-10 1979-05-10 Molding method of diaphragm plate for speaker Pending JPS55149595A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5727179A JPS55149595A (en) 1979-05-10 1979-05-10 Molding method of diaphragm plate for speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5727179A JPS55149595A (en) 1979-05-10 1979-05-10 Molding method of diaphragm plate for speaker

Publications (1)

Publication Number Publication Date
JPS55149595A true JPS55149595A (en) 1980-11-20

Family

ID=13050857

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5727179A Pending JPS55149595A (en) 1979-05-10 1979-05-10 Molding method of diaphragm plate for speaker

Country Status (1)

Country Link
JP (1) JPS55149595A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58156298A (en) * 1982-03-12 1983-09-17 Sanyo Electric Co Ltd Joining method of speaker diaphragm and its edge
JPS5916495A (en) * 1982-07-19 1984-01-27 Sanyo Electric Co Ltd Joining method of speaker diaphragm and edge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58156298A (en) * 1982-03-12 1983-09-17 Sanyo Electric Co Ltd Joining method of speaker diaphragm and its edge
JPS5916495A (en) * 1982-07-19 1984-01-27 Sanyo Electric Co Ltd Joining method of speaker diaphragm and edge

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