JPS57109496A - Vibration diaphragm for loudspeaker - Google Patents

Vibration diaphragm for loudspeaker

Info

Publication number
JPS57109496A
JPS57109496A JP18523080A JP18523080A JPS57109496A JP S57109496 A JPS57109496 A JP S57109496A JP 18523080 A JP18523080 A JP 18523080A JP 18523080 A JP18523080 A JP 18523080A JP S57109496 A JPS57109496 A JP S57109496A
Authority
JP
Japan
Prior art keywords
rho
polypropylene
vibration diaphragm
modulus
density
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
JP18523080A
Other languages
Japanese (ja)
Inventor
Tetsuo Ikeda
Tamotsu Abe
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.)
Onkyo Corp
Original Assignee
Onkyo 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 Onkyo Corp filed Critical Onkyo Corp
Priority to JP18523080A priority Critical patent/JPS57109496A/en
Publication of JPS57109496A publication Critical patent/JPS57109496A/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

Landscapes

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

Abstract

PURPOSE:To expand a piston oscillation frequency area, by raising the rigidity of a vibration diaphragm, and also reducing its density. CONSTITUTION:In order to raise a value of E (Young's modulus)/rho (density) of synthetic resin which becomes a base body, polypropylene, a copolymer mainly composed of propylene, polyethylene a copolymer mainly composed of ethylene, etc., or their mixture are selected. Also, as for a reinforcement, a glass fiber, a glass flake, a carbon fiber, etc., whose Young's modulus is comparatively high, or these mixture are selected. For instance, when 20wt% a glass fiber is mixed in polypropylene, a film of rho=1.05, E=5X10<4>kg/cm<2> is obtained. When it is compared with polypropylene, a value of E/rho of about 2 times is obtained.
JP18523080A 1980-12-26 1980-12-26 Vibration diaphragm for loudspeaker Pending JPS57109496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18523080A JPS57109496A (en) 1980-12-26 1980-12-26 Vibration diaphragm for loudspeaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18523080A JPS57109496A (en) 1980-12-26 1980-12-26 Vibration diaphragm for loudspeaker

Publications (1)

Publication Number Publication Date
JPS57109496A true JPS57109496A (en) 1982-07-07

Family

ID=16167147

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18523080A Pending JPS57109496A (en) 1980-12-26 1980-12-26 Vibration diaphragm for loudspeaker

Country Status (1)

Country Link
JP (1) JPS57109496A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58210797A (en) * 1982-06-01 1983-12-08 Nippon Columbia Co Ltd Diaphragm for speaker
JPS6016099A (en) * 1983-07-07 1985-01-26 Foster Denki Kk Diaphragm for speaker
US6004911A (en) * 1995-12-27 1999-12-21 Denso Corporation Processing oil suitable for aluminum materials and removable via heating

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5466119A (en) * 1977-11-05 1979-05-28 Matsushita Electric Ind Co Ltd Diaphragm for speaker and production of the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5466119A (en) * 1977-11-05 1979-05-28 Matsushita Electric Ind Co Ltd Diaphragm for speaker and production of the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58210797A (en) * 1982-06-01 1983-12-08 Nippon Columbia Co Ltd Diaphragm for speaker
JPS6016099A (en) * 1983-07-07 1985-01-26 Foster Denki Kk Diaphragm for speaker
US6004911A (en) * 1995-12-27 1999-12-21 Denso Corporation Processing oil suitable for aluminum materials and removable via heating

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