JPS5745797A - Diaphragm for speaker - Google Patents

Diaphragm for speaker

Info

Publication number
JPS5745797A
JPS5745797A JP12190680A JP12190680A JPS5745797A JP S5745797 A JPS5745797 A JP S5745797A JP 12190680 A JP12190680 A JP 12190680A JP 12190680 A JP12190680 A JP 12190680A JP S5745797 A JPS5745797 A JP S5745797A
Authority
JP
Japan
Prior art keywords
diaphragm
elasticity
core material
maleic anhydride
speaker
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
JP12190680A
Other languages
Japanese (ja)
Other versions
JPS597278B2 (en
Inventor
Satoshi Takayama
Kosaku Murata
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 JP12190680A priority Critical patent/JPS597278B2/en
Publication of JPS5745797A publication Critical patent/JPS5745797A/en
Publication of JPS597278B2 publication Critical patent/JPS597278B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • 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)
  • Laminated Bodies (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

PURPOSE:To reduce weight, increase specific modulus of elasticity and improve thermal resistance by constituting a diaphragm of a speaker of sandwhich structure by stucking surface materials on the surface of a core material and using foamed styrene - maleic anhydride copolymer as a core material. CONSTITUTION:A platy diaphragm of sandwich structure is formed by bonding surface materials 2, 2' of high modulus of elasticity made of light metal such as Al or plastic composite material such as fiber reinforced plastics on a core material 1 made of foamed styrene - maleic anhydride copolymer. Thus, the diaphragm is made light, high in specific modulus of a elasticity, excellent in acoustic characteristic and improved in thermal resistance.
JP12190680A 1980-09-02 1980-09-02 Diaphragm for speaker Expired JPS597278B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12190680A JPS597278B2 (en) 1980-09-02 1980-09-02 Diaphragm for speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12190680A JPS597278B2 (en) 1980-09-02 1980-09-02 Diaphragm for speaker

Publications (2)

Publication Number Publication Date
JPS5745797A true JPS5745797A (en) 1982-03-15
JPS597278B2 JPS597278B2 (en) 1984-02-17

Family

ID=14822828

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12190680A Expired JPS597278B2 (en) 1980-09-02 1980-09-02 Diaphragm for speaker

Country Status (1)

Country Link
JP (1) JPS597278B2 (en)

Also Published As

Publication number Publication date
JPS597278B2 (en) 1984-02-17

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