JPS55102995A - Diaphragm for acoustic equipment and its manufacture - Google Patents

Diaphragm for acoustic equipment and its manufacture

Info

Publication number
JPS55102995A
JPS55102995A JP1085379A JP1085379A JPS55102995A JP S55102995 A JPS55102995 A JP S55102995A JP 1085379 A JP1085379 A JP 1085379A JP 1085379 A JP1085379 A JP 1085379A JP S55102995 A JPS55102995 A JP S55102995A
Authority
JP
Japan
Prior art keywords
foaming
sound
adhesive
diaphragm
external vibration
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
JP1085379A
Other languages
Japanese (ja)
Inventor
Kosaku Murata
Yoshiaki Maruno
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 JP1085379A priority Critical patent/JPS55102995A/en
Publication of JPS55102995A publication Critical patent/JPS55102995A/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 improve sound-pressure characteristics and stability to external vibration by bonding a surface material to a honeycomb material surface by an adhesive containing a foaming agent. CONSTITUTION:An adhesive obtained by hardening thermally or mixing an organic foaming agent with thermoplastic adhesives 4 and 4' is uniformly applied on a surface to a thickness not exceeding a fixed value in the wet or dry method and this surface material, stuck on both sides of honeycomb core material 1, is heated for foaming, so that adhesion effect can be obtained. Then, foaming adhesives 4 and 4' intrude into core material 1 to increase the adhesion surface, thereby improving adhesion strength. Therefore, it becomes stable extremely to external vibration and reliability improves. Here, there is no need to use much adhesive, and consequently sound-pressure characteristics improve while abnormal sound of the diaphragm can be absorbed because of structure including foaming bodies.
JP1085379A 1979-02-01 1979-02-01 Diaphragm for acoustic equipment and its manufacture Pending JPS55102995A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1085379A JPS55102995A (en) 1979-02-01 1979-02-01 Diaphragm for acoustic equipment and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1085379A JPS55102995A (en) 1979-02-01 1979-02-01 Diaphragm for acoustic equipment and its manufacture

Publications (1)

Publication Number Publication Date
JPS55102995A true JPS55102995A (en) 1980-08-06

Family

ID=11761904

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1085379A Pending JPS55102995A (en) 1979-02-01 1979-02-01 Diaphragm for acoustic equipment and its manufacture

Country Status (1)

Country Link
JP (1) JPS55102995A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2480230A (en) * 2010-03-23 2011-11-16 Anthony Asbury Structural panel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2480230A (en) * 2010-03-23 2011-11-16 Anthony Asbury Structural panel

Similar Documents

Publication Publication Date Title
GB954907A (en) Panel structure providing a high acoustic transmission loss
JPS5642499A (en) Ultrasonic-wave transducer
ATE6378T1 (en) DAMPING COATING.
JPS55102995A (en) Diaphragm for acoustic equipment and its manufacture
JPS5384040A (en) Process and appratus for accelerating curing of bonding members bonded with crystal hardening bonding agent
JPS619098A (en) Speaker
GB1196301A (en) An Improved Composite Building Material and its Manufacturing Method
JPS55140397A (en) Diaphragm
JPS52111714A (en) Electrokinetic type electroacoustic transducer with metallic vibr ating plate
GB574529A (en) Improvements in or relating to splints
JPS57118498A (en) Speaker diaphragm and its production
JPS5791099A (en) Piezoelectric type speaker
JPS5769995A (en) Diaphragm for speaker
JPS55141895A (en) Manufacture for speaker diaphragm plate
JPS5439623A (en) Diaphragm for speakers
FR2348326A1 (en) INSULATION MATERIAL IN THE FORM OF SHEETS OR SIMILAR
JPS5469189A (en) Preparation of honeycomb sandwich construction material
JPS5625818A (en) Manufacture for ultrasonic wave delay line
JPS5669995A (en) Diaphragm for audio loudspeaker
JPS5921437Y2 (en) sound insulation board
JPS5538739A (en) Acoustic diaphragm
JPS5793797A (en) Vibration diaphragm for speaker
JPS584394Y2 (en) Loudspeaker diaphragm
JPS5219505A (en) Manufacturing process of adhesive magnetic sheet
JPS5596799A (en) Production of electrostatic electroacustic transducer