GB1384718A - Loudspeaker diaphragm - Google Patents
Loudspeaker diaphragmInfo
- Publication number
- GB1384718A GB1384718A GB4837773A GB4837773A GB1384718A GB 1384718 A GB1384718 A GB 1384718A GB 4837773 A GB4837773 A GB 4837773A GB 4837773 A GB4837773 A GB 4837773A GB 1384718 A GB1384718 A GB 1384718A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resin
- plastics material
- foamed plastics
- rubber
- frusto
- 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.)
- Expired
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
- H04R7/12—Non-planar diaphragms or cones
- H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
-
- 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
- H04R7/12—Non-planar diaphragms or cones
- H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
- H04R7/125—Non-planar diaphragms or cones comprising a plurality of sections or layers comprising a plurality of superposed layers in contact
-
- 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
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/029—Diaphragms comprising fibres
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Manufacturing & Machinery (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
1384718 Loud-speaker diaphragms MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd and SEKISUI KAGAKU KOGYO KK 30 May 1972 [5 July 1971 12 July 1971] 48377/73 Divided out of 1384716 Heading H4J A loud-speaker diaphragm of foamed plastics material has at least one coating, on at least one face, applied as an aqueous emulsion of a resin. The resin may be polyvinyl acetate, polyvinyl chloride, polystyrene or acrylic resin. Alternatively rubber resin such as butadiene-styrene rubber or butadiene-acrylonitrile rubber may be used. The foamed plastics material may be as described in Specification 1,384,716. The foamed plastics material may be immersed in the aqueous emulsion of resin or the resin sprayed in atomized form on to or brush on the foamed plastics material. A frusto-conical diaphragm is either pressed from a sheet of the foamed plastics material previously coated with resin or the frusto-conical diaphragm is first formed and then coated with resin.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4431971U JPS483028U (en) | 1971-05-28 | 1971-05-28 | |
JP4972571U JPS484488U (en) | 1971-06-14 | 1971-06-14 | |
JP6145171A JPS5140523B1 (en) | 1970-08-14 | 1971-07-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1384718A true GB1384718A (en) | 1975-02-19 |
Family
ID=44583528
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4837673A Expired GB1384717A (en) | 1971-05-28 | 1972-05-30 | Outer peripheral suspension members for loudspeakers |
GB2521672A Expired GB1384716A (en) | 1971-05-28 | 1972-05-30 | Loudspeaker diaphragm |
GB4837773A Expired GB1384718A (en) | 1971-05-28 | 1972-05-30 | Loudspeaker diaphragm |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4837673A Expired GB1384717A (en) | 1971-05-28 | 1972-05-30 | Outer peripheral suspension members for loudspeakers |
GB2521672A Expired GB1384716A (en) | 1971-05-28 | 1972-05-30 | Loudspeaker diaphragm |
Country Status (3)
Country | Link |
---|---|
US (1) | US3834486A (en) |
DE (1) | DE2225710C3 (en) |
GB (3) | GB1384717A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2144600A (en) * | 1983-08-04 | 1985-03-06 | Standard Telephones Cables Ltd | Electro-acoustic transducer |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3960106A (en) * | 1970-05-14 | 1976-06-01 | Brey Robert J De | Particle flow monitor |
DE2500397C2 (en) * | 1975-01-07 | 1986-05-28 | Schorlemer, Frhr. von, Reinfried, Dipl.-Phys., 3500 Kassel | Membrane for an electroacoustic transducer system and an electroacoustic transducer system equipped with it |
US4129195A (en) * | 1975-12-24 | 1978-12-12 | Sanyo Electric Co., Ltd. | Diaphragm for speaker |
JPS5278425A (en) * | 1975-12-24 | 1977-07-01 | Sanyo Electric Co Ltd | Diaphragm for speaker |
GB1563511A (en) * | 1976-03-19 | 1980-03-26 | Harwood H | Diaphragms for electroacoustic transducers |
JPS5379525A (en) * | 1976-12-23 | 1978-07-14 | Sony Corp | Compound diaphtagm for speakers |
JPS5748153Y2 (en) * | 1977-11-26 | 1982-10-22 | ||
GB2059717B (en) * | 1979-09-25 | 1984-04-04 | Victor Company Of Japan | Speaker diaphragm assembly and a method of manufacturing the same |
US4445227A (en) * | 1981-12-28 | 1984-04-24 | Magnavox Consumer Electronics Company | Loudspeaker having improved directional characteristics |
NL8200690A (en) * | 1982-02-22 | 1983-09-16 | Philips Nv | SPEAKER MEMBRANE CONTAINING A LAYER OF POLYMETHACRYLIMIDE FOAM. |
FR2562369A1 (en) * | 1984-03-27 | 1985-10-04 | Thomson Csf | Method of manufacturing a transducer diaphragm from a polymer material comprising portions with different stiffnesses and diaphragm obtained by this method |
GB8514189D0 (en) * | 1985-06-05 | 1985-07-10 | Reefgrade Ltd | Electro-mechanical transducer diaphragm |
EP0251057A1 (en) * | 1986-06-21 | 1988-01-07 | EWD Electronic-Werke Deutschland GmbH | Loudspeaker |
DE8712014U1 (en) * | 1987-09-04 | 1987-10-29 | Chen, Ding Pang, Taipeh/T'ai-pei | Perimeter element for a loudspeaker |
FR2665321A1 (en) * | 1990-07-23 | 1992-01-31 | Fontaine Pierre | PROCESS FOR MANUFACTURING MEMBRANES FOR ELECTRO-MECHANICAL APPLICATIONS, ESPECIALLY FOR ELECTRO-MECHANICAL TRANDUCTORS AND PRODUCT THEREOF. |
US5259036A (en) * | 1991-07-22 | 1993-11-02 | Shure Brothers, Inc. | Diaphragm for dynamic microphones and methods of manufacturing the same |
DE4321506C2 (en) * | 1993-06-29 | 1999-07-29 | Ulrich Ranke | Loudspeaker diaphragm for a sound generator |
CN1122436C (en) * | 1994-11-30 | 2003-09-24 | 先锋电子股份有限公司 | Loudspeaker vibrating diaphragm and methods for its production |
FR2734685B1 (en) * | 1995-05-23 | 1997-08-14 | Silec Liaisons Elec | PIEZOELECTRIC SPEAKER |
JP3947321B2 (en) * | 1999-03-04 | 2007-07-18 | パイオニア株式会社 | Foam molded body, molding method thereof and speaker diaphragm using the same |
DE19925787C1 (en) * | 1999-06-05 | 2000-12-21 | Roehm Gmbh | Process for the production of membranes for electroacoustic transducers and membranes |
US6724910B1 (en) | 1999-10-04 | 2004-04-20 | Harman International Industries, Incorporated | Diaphragm stable through hygroscopic cycling |
US6351544B1 (en) | 1999-12-10 | 2002-02-26 | Harman International Industries Incorporated | Regressively hinged spider |
JP2002374593A (en) * | 2001-06-18 | 2002-12-26 | Pioneer Electronic Corp | Speaker diaphragm |
DE10135414C1 (en) * | 2001-07-25 | 2003-03-13 | Roehm Gmbh | Production of non-flat membranes for electroacoustic transducers |
US6929091B2 (en) * | 2002-10-28 | 2005-08-16 | Sound Advance Systems, Inc. | Planar diaphragm loudspeaker and related methods |
EP1515582B1 (en) * | 2003-09-11 | 2006-01-11 | AKG Acoustics GmbH | Dynamic electroacoustic converter, in particular small speaker |
EP1694094A1 (en) * | 2005-02-18 | 2006-08-23 | AKG Acoustics GmbH | Membrane for a dynamic converter |
JP2008167150A (en) * | 2006-12-28 | 2008-07-17 | Matsushita Electric Ind Co Ltd | Speaker |
EP2271137A1 (en) * | 2009-07-03 | 2011-01-05 | DR. KURT MÜLLER GmbH & Co. KG | Loudspeaker membrane and method for manufacturing a loudspeaker membrane |
JP5665194B2 (en) * | 2011-08-19 | 2015-02-04 | 株式会社オーディオテクニカ | Electroacoustic transducer diaphragm and method of manufacturing the same |
USD776086S1 (en) * | 2014-04-23 | 2017-01-10 | Martin Audio Limited | Loudspeaker |
CN107431862B (en) * | 2015-02-05 | 2020-12-25 | 伊戈声学制造有限责任公司 | Integrated voice coil and cone assembly and method of making same |
US9769570B2 (en) * | 2015-03-31 | 2017-09-19 | Bose Corporation | Acoustic diaphragm |
JP1549098S (en) * | 2015-11-26 | 2016-05-16 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3125647A (en) * | 1964-03-17 | Frequency-o cycles sec | ||
BE377376A (en) * | 1930-02-15 | |||
US1990409A (en) * | 1932-02-19 | 1935-02-05 | Neville Athol Ernest | Acoustical diaphragm |
US2146975A (en) * | 1936-11-06 | 1939-02-14 | Nagelvoort Adriaan | Acoustic diaphragm |
USRE24141E (en) * | 1952-10-25 | 1956-04-10 | Method of making the same | |
US2815823A (en) * | 1953-03-02 | 1957-12-10 | Rca Corp | Loudspeaker structure |
US2905260A (en) * | 1955-02-24 | 1959-09-22 | Muter Company | Loud speaker diaphragm |
US3093207A (en) * | 1960-10-04 | 1963-06-11 | R T Bozak Mfg Company | Metallic diaphragm for electrodynamic loudspeakers |
US3153463A (en) * | 1961-08-30 | 1964-10-20 | Muter Company | Compound loudspeaker diaphragm |
US3111189A (en) * | 1962-01-12 | 1963-11-19 | Theodore R Scholl | Electrodynamic loudspeaker |
US3285364A (en) * | 1965-06-01 | 1966-11-15 | Ling Temco Vought Inc | Loudspeaker construction |
AT274080B (en) * | 1967-07-05 | 1969-09-10 | Philips Nv | Sound transducer with a foam membrane |
-
1972
- 1972-05-26 DE DE2225710A patent/DE2225710C3/en not_active Expired
- 1972-05-30 GB GB4837673A patent/GB1384717A/en not_active Expired
- 1972-05-30 GB GB2521672A patent/GB1384716A/en not_active Expired
- 1972-05-30 GB GB4837773A patent/GB1384718A/en not_active Expired
- 1972-05-30 US US00257527A patent/US3834486A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2144600A (en) * | 1983-08-04 | 1985-03-06 | Standard Telephones Cables Ltd | Electro-acoustic transducer |
Also Published As
Publication number | Publication date |
---|---|
DE2225710A1 (en) | 1972-12-14 |
DE2225710C3 (en) | 1975-12-04 |
DE2264881A1 (en) | 1975-08-21 |
US3834486A (en) | 1974-09-10 |
GB1384716A (en) | 1975-02-19 |
GB1384717A (en) | 1975-02-19 |
DE2225710B2 (en) | 1975-04-24 |
DE2264881B2 (en) | 1976-10-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PE20 | Patent expired after termination of 20 years |