JPS556982A - Diaphragm - Google Patents

Diaphragm

Info

Publication number
JPS556982A
JPS556982A JP7990378A JP7990378A JPS556982A JP S556982 A JPS556982 A JP S556982A JP 7990378 A JP7990378 A JP 7990378A JP 7990378 A JP7990378 A JP 7990378A JP S556982 A JPS556982 A JP S556982A
Authority
JP
Japan
Prior art keywords
substance
loading
diaphragm
specific gravity
flexural rigidity
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
JP7990378A
Other languages
Japanese (ja)
Inventor
Takafumi Ueno
Tatsuo Fukuyama
Kenichi Takahashi
Koshin Shimada
Yoshiaki Harada
Shinichiro Ishii
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 JP7990378A priority Critical patent/JPS556982A/en
Publication of JPS556982A publication Critical patent/JPS556982A/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

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 secure a low distortion in a wide band by giving the light weight and a high rigidity to the diaphragm by loading the micro hollow ball substances into the basic material. CONSTITUTION:The diaphragm is composed by loading micro hollow ball substances 12 such as the silica balloon featuring the hollow inside and the outer part covered with the outer shell plus a high intensity into basic material 11 such as the thermosetting epoxy resin or the like. The specific gravity of substance 12 is extremely small (0.05-0.5), and accordingly the thickness of material 11 becomes 1.8 times as large as the basic material only after loading of the ball substance and under a fixed overall weight under the conditions of, for example, 1.0 specific gravity of material 11, 0.1 specific gravity of substance 12 and 50% volume ratio of the loading quantity of substance 12 respectively. Flexural rigidity Y features as Y=E.t<3>/12, where Young's modulus is E and thickness is t each, which means about 1.8<3> (5.8-fold) compared with the flexural rigidity of material 11 only. As a result, a diaphragm featuring a low distortion in a wide band can be obtained with the light weight and an extremely high flexural rigidity.
JP7990378A 1978-06-30 1978-06-30 Diaphragm Pending JPS556982A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7990378A JPS556982A (en) 1978-06-30 1978-06-30 Diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7990378A JPS556982A (en) 1978-06-30 1978-06-30 Diaphragm

Publications (1)

Publication Number Publication Date
JPS556982A true JPS556982A (en) 1980-01-18

Family

ID=13703233

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7990378A Pending JPS556982A (en) 1978-06-30 1978-06-30 Diaphragm

Country Status (1)

Country Link
JP (1) JPS556982A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5897236A (en) * 1981-11-25 1983-06-09 シュルタ−・アクチエンゲゼルシャフト Fuse holder
JPH0435200A (en) * 1990-05-25 1992-02-05 Victor Co Of Japan Ltd Diaphragm for speaker and manufacture thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5897236A (en) * 1981-11-25 1983-06-09 シュルタ−・アクチエンゲゼルシャフト Fuse holder
JPH0435200A (en) * 1990-05-25 1992-02-05 Victor Co Of Japan Ltd Diaphragm for speaker and manufacture thereof

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