JPS5730497A - Diaphragm for speaker - Google Patents

Diaphragm for speaker

Info

Publication number
JPS5730497A
JPS5730497A JP10547080A JP10547080A JPS5730497A JP S5730497 A JPS5730497 A JP S5730497A JP 10547080 A JP10547080 A JP 10547080A JP 10547080 A JP10547080 A JP 10547080A JP S5730497 A JPS5730497 A JP S5730497A
Authority
JP
Japan
Prior art keywords
skin materials
frequency
core material
mica
stuck
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
JP10547080A
Other languages
Japanese (ja)
Inventor
Yoshiaki Maruno
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 JP10547080A priority Critical patent/JPS5730497A/en
Publication of JPS5730497A publication Critical patent/JPS5730497A/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
    • 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 increase the limit frequency of high-frequency range reproduction and to decrease a resonance peak by sticking skin materials, which is each made of mica and thermosetting resin, to both the sides of a core material formed by folding a metallic thin film radially and by further sticking SiC layers. CONSTITUTION:Long-sized Al foil having 20mum thickness and 9mm. width is folded alternately at the center part and outer circumference of a circle and arranged radially to form a core material having 3.5cm diameter. On the upper and lower edges of the core material 1, circular skin materials 2 and 2' are stuck by using adhesives 3 and 3'. Those skin materials 2 and 2' are made of 20mum thickness thin composite films 4 and 4' obtained by curing mica and epoxy resin over heating and pressing and 1mum thickness SiC layers 5 and 5' stuck on the surfaces of the thin films 4 and 4' by a high-frequency sputtering method. Those skin materials 2 and 2' have greater specific elasticity than the Al foil, and greater internal loss as well. Therefore, the resonance frequency of a diaphragm for high frequency range formed as mentioned above is increased, a sound pressure peak at the resonance frequency is decreased.
JP10547080A 1980-07-30 1980-07-30 Diaphragm for speaker Pending JPS5730497A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10547080A JPS5730497A (en) 1980-07-30 1980-07-30 Diaphragm for speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10547080A JPS5730497A (en) 1980-07-30 1980-07-30 Diaphragm for speaker

Publications (1)

Publication Number Publication Date
JPS5730497A true JPS5730497A (en) 1982-02-18

Family

ID=14408469

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10547080A Pending JPS5730497A (en) 1980-07-30 1980-07-30 Diaphragm for speaker

Country Status (1)

Country Link
JP (1) JPS5730497A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6383168U (en) * 1986-11-19 1988-06-01
JPS63142995U (en) * 1987-03-09 1988-09-20
US5003610A (en) * 1988-04-14 1991-03-26 Fostex Corporation Whole surface driven speaker
US5430805A (en) * 1990-12-27 1995-07-04 Chain Reactions, Inc. Planar electromagnetic transducer
US5627903A (en) * 1993-10-06 1997-05-06 Chain Reactions, Inc. Variable geometry electromagnetic transducer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5437720A (en) * 1977-08-30 1979-03-20 Mitsubishi Electric Corp Diaphragm for speakers
JPS5469425A (en) * 1977-11-12 1979-06-04 Mitsubishi Metal Corp Acoustic converter double layer vibrator and method of fabricating same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5437720A (en) * 1977-08-30 1979-03-20 Mitsubishi Electric Corp Diaphragm for speakers
JPS5469425A (en) * 1977-11-12 1979-06-04 Mitsubishi Metal Corp Acoustic converter double layer vibrator and method of fabricating same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6383168U (en) * 1986-11-19 1988-06-01
JPS63142995U (en) * 1987-03-09 1988-09-20
US5003610A (en) * 1988-04-14 1991-03-26 Fostex Corporation Whole surface driven speaker
US5430805A (en) * 1990-12-27 1995-07-04 Chain Reactions, Inc. Planar electromagnetic transducer
US5953438A (en) * 1990-12-27 1999-09-14 Chain Reactions, Inc. Planar electromagnetic transducer
US5627903A (en) * 1993-10-06 1997-05-06 Chain Reactions, Inc. Variable geometry electromagnetic transducer

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