JPS56125193A - Diaphragm plate for acoustic device - Google Patents

Diaphragm plate for acoustic device

Info

Publication number
JPS56125193A
JPS56125193A JP2789480A JP2789480A JPS56125193A JP S56125193 A JPS56125193 A JP S56125193A JP 2789480 A JP2789480 A JP 2789480A JP 2789480 A JP2789480 A JP 2789480A JP S56125193 A JPS56125193 A JP S56125193A
Authority
JP
Japan
Prior art keywords
diaphragm plate
fiber
glass cloth
elasticity
polyimide resin
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
JP2789480A
Other languages
Japanese (ja)
Other versions
JPS591033B2 (en
Inventor
Shigeru Hasumi
Kazuo Tanaka
Takashi Nishitoi
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP2789480A priority Critical patent/JPS591033B2/en
Priority to US06/480,476 priority patent/US4460060A/en
Publication of JPS56125193A publication Critical patent/JPS56125193A/en
Publication of JPS591033B2 publication Critical patent/JPS591033B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general
    • 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

Abstract

PURPOSE:To increase the elasticity, by adding graphite fine powder to a type of highly elastic fiber at least selected from carbon fiber, glass fiber and aromatic polyamide fiber. CONSTITUTION:The prepleg of glass cloth:polyimide resin:graphite=40:35:25(wt. ratio) is formed by adding graphite CP to glass cloth (e.g., Nitto-bo made glass cloth WE-116E), immersed with 70pts. of N-methylpirodorin solution to 100pts. of polyimide resin. This is molded into cone type diaphragm plate with metal mold. The physical property of the diaphragm plate like this is sound velocity of 4,000m/ sec at room temperature and 0.030 of internal loss. The diaphragm plate thus obtained is excellent in heat resistance and flame resistance and high in the elasticity.
JP2789480A 1980-03-07 1980-03-07 Diaphragm for audio equipment Expired JPS591033B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2789480A JPS591033B2 (en) 1980-03-07 1980-03-07 Diaphragm for audio equipment
US06/480,476 US4460060A (en) 1980-03-07 1981-08-27 Vibratory diaphragm for loudspeaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2789480A JPS591033B2 (en) 1980-03-07 1980-03-07 Diaphragm for audio equipment

Publications (2)

Publication Number Publication Date
JPS56125193A true JPS56125193A (en) 1981-10-01
JPS591033B2 JPS591033B2 (en) 1984-01-10

Family

ID=12233587

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2789480A Expired JPS591033B2 (en) 1980-03-07 1980-03-07 Diaphragm for audio equipment

Country Status (1)

Country Link
JP (1) JPS591033B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6411095U (en) * 1987-07-10 1989-01-20
US5701359A (en) * 1995-04-06 1997-12-23 Precision Power Flat-panel speaker
US6097829A (en) * 1995-04-06 2000-08-01 Precision Power, Inc. Fiber-honeycomb-fiber sandwich speaker diaphragm and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6139020A (en) * 1984-07-31 1986-02-25 Konishiroku Photo Ind Co Ltd Inverted galileo albada finder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6411095U (en) * 1987-07-10 1989-01-20
US5701359A (en) * 1995-04-06 1997-12-23 Precision Power Flat-panel speaker
US6097829A (en) * 1995-04-06 2000-08-01 Precision Power, Inc. Fiber-honeycomb-fiber sandwich speaker diaphragm and method

Also Published As

Publication number Publication date
JPS591033B2 (en) 1984-01-10

Similar Documents

Publication Publication Date Title
JPS56125193A (en) Diaphragm plate for acoustic device
EP0355602A3 (en) Molding material for electroconductive ic parts
DK0402826T3 (en) Process for preparing ethylene copolymers loaded with non-fibrous carbohydrates
NO155735C (en) PROCEDURE FOR THE PREPARATION OF POLYOLEFINE-BASED FIBRIDES.
DK313379A (en) APPLICATION OF POLYSTYROLY POLYMERIZATES FOR THE MANUFACTURE OF FLEXIBLE DRAWING CHAMBER FOR TRANSFER DEVICES
JPS565121A (en) Heat resistant separating membrane for mixed gas
JPS5267613A (en) Speaker
JPS53119977A (en) Production of aromatic copolyamide molded product
JPS5314828A (en) Manufacture of molded articles of aromatic polyamides
JPS5571771A (en) Adhesive composition
JPS5487203A (en) Air bearing device
JPS5221043A (en) Heat resistant vibration damping composition
JPS5275317A (en) Diaphragm for speakers
JPS53102951A (en) Vibration damping material
JPS54133546A (en) Manufacturing of crosslinked polyester molded article
JPS5577297A (en) Voice coil for speaker
JPS6443000A (en) Manufacture of damper of speaker
JPS5275314A (en) Diaphragm for speaker
JPS56104743A (en) Bushing for preparing glass fiber
JPS5275428A (en) Diaphragm for speakers
JPS5445121A (en) Production of diaphragms for speakers
JPS52111897A (en) Production of adsorbent from vulcanized rubber
JPS5556171A (en) Adhesive composition
JPS52144379A (en) Production of binding material for fibrous diaphragm and diaphragm made of asbestos fibers
JPS5731293A (en) Speaker cabinet