GB1157463A - Loudspeaker Assembly. - Google Patents
Loudspeaker Assembly.Info
- Publication number
- GB1157463A GB1157463A GB34569/66A GB3456966A GB1157463A GB 1157463 A GB1157463 A GB 1157463A GB 34569/66 A GB34569/66 A GB 34569/66A GB 3456966 A GB3456966 A GB 3456966A GB 1157463 A GB1157463 A GB 1157463A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- frame
- plastics
- assembly
- coil
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
- H04R9/063—Loudspeakers using a plurality of acoustic drivers
-
- 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
- H04R7/04—Plane diaphragms
-
- 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
-
- 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
-
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/045—Mounting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49005—Acoustic transducer
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
1,157,463. Loud-speakers. ELECTRONIC RESEARCH ASSOCIATES Inc. 2 Aug., 1966 No. 34569/66. Heading H4J. A loud-speaker assembly comprises a substantially flat diaphragm supported at its edges by a frame which is acoustically compatible therewith, the frame and the diaphragm being composed of plastics material, one or both being of cellular plastics material, e.g. cellular polystyrene. The materials of the diaphragm and support frame are matched acoustically to reduce undesired resonance effects, whilst providing a lightweight assembly. A method of assembling such a loud-speaker is described. In one embodiment, the diaphragm 2, Figs. 2 and 3, is substantially flat and is moulded integral with the rectangular frame 4, which is slightly thicker than the diaphragm. The frame also comprises ribs 6 which support the magnet assembly and diagonal reinforcing ribs 10. The ribs 6 and 10 and frame are shaped so that sound is projected forward or backward from the whole assembly. The magnet assembly comprises a magnetic element 8 acting on a coil formed on former 20 made as a plastics coated paper tube secured to the diaphragm 2, preferably by being embedded in it, together with a reinforcing plate 22 of plastics impregnated fibrous material, which is bonded or formed integral with former 20. The leads 24 to the coil are embedded in the diaphragm and are folded back as at 30 to provide unrestricted oscillation of the diaphragm. Reinforcing layers 3 of plastics or plastics impregnated paper or fabric, or metal foil, are provided on the outside of the diaphragm. The diaphragm may have a number of circular grooves (36) at its edge adjacent the frame portion to improve elasticity, Fig. 5 (not shown). If the frame is formed separately from the diaphragm, it may be made of plastics material somewhat more dense than the diaphragm material, which is of cellular plastics having a density of 0.8-10 pounds/cubic foot. Alternatively, the frame is of cellular plastics and the diaphragm of a different plastics material. The frame may be mounted using rubber mounting cushions in channel support members (33), Fig. 4 (not shown), to which is attached the speaker fabric, or the fabric may be attached direct to the moulded frame. Method of moulding and assembling. Fig. 6.- On to a cylindrical locating member 52, mounted in the mould 54, is fitted the reinforcing plate 22 and coil former 20 carrying the coil. The magnetic assembly, comprising ceramic or Alnico magnetic element 8, top and bottom plates 46, 48 and central member 44 which, with plate 48, forms the air gap, is then positioned by engaging the hole in member 44 over locating pin 56. Cellular plastics material is then introduced to form the diaphragm and frame, fixing the coil and associated wiring and the magnetic assembly in accurately associated positions. The locating member 52 is removed and the hole remaining in the diaphragm filled by plastics plug 58, Fig. 3. Alternative arrangements.-In Figs. 7, 8 (not shown), the reinforcing and magnet carrying ribs of the frame are of a different configuration and are formed of metal. In Fig. 9 (not shown) the diaphragm is driven by four magnetic assemblies and is useful in high output power applications. In Fig. 10 (not shown), various sealing means of rubber, plastics &c. around the magnetic assembly, provide for a moisture proof assembly, for outdoor or even underwater use.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US342827A US3351719A (en) | 1964-02-05 | 1964-02-05 | Loudspeaker assembly |
GB34569/66A GB1157463A (en) | 1964-02-05 | 1966-08-02 | Loudspeaker Assembly. |
DE19661487283 DE1487283A1 (en) | 1964-02-05 | 1966-09-06 | speaker |
NL6615043A NL137671C (en) | 1964-02-05 | 1966-10-24 | |
FR81623A FR1497849A (en) | 1964-02-05 | 1966-10-26 | Loud speaker |
US648089A US3569638A (en) | 1964-02-05 | 1967-06-22 | Loudspeaker having plastic diaphragm with compliance grooves |
US688296A US3573396A (en) | 1964-02-05 | 1967-11-17 | Loudspeaker having improved diaphragm |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US342827A US3351719A (en) | 1964-02-05 | 1964-02-05 | Loudspeaker assembly |
GB34569/66A GB1157463A (en) | 1964-02-05 | 1966-08-02 | Loudspeaker Assembly. |
DE19661487283 DE1487283A1 (en) | 1964-02-05 | 1966-09-06 | speaker |
NL6615043A NL137671C (en) | 1964-02-05 | 1966-10-24 | |
FR81623A FR1497849A (en) | 1964-02-05 | 1966-10-26 | Loud speaker |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1157463A true GB1157463A (en) | 1969-07-09 |
Family
ID=27509880
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34569/66A Expired GB1157463A (en) | 1964-02-05 | 1966-08-02 | Loudspeaker Assembly. |
Country Status (5)
Country | Link |
---|---|
US (1) | US3351719A (en) |
DE (1) | DE1487283A1 (en) |
FR (1) | FR1497849A (en) |
GB (1) | GB1157463A (en) |
NL (1) | NL137671C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3123098A1 (en) * | 1981-06-11 | 1983-01-05 | Martin 4600 Dortmund Stute | Diaphragm for electroacoustic transducer systems |
EP0538381A1 (en) * | 1990-07-11 | 1993-04-28 | Harman Int Ind | Loudspeaker suspension. |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3569638A (en) * | 1964-02-05 | 1971-03-09 | Electronic Res Ass | Loudspeaker having plastic diaphragm with compliance grooves |
US3553392A (en) * | 1968-03-07 | 1971-01-05 | Electronics Inc Of Pennsylvani | Electrodynamic sound radiator |
US3531602A (en) * | 1968-03-29 | 1970-09-29 | Zenith Radio Corp | Radio or the like with control shaft extending through speaker diaphragm |
US3554315A (en) * | 1968-05-21 | 1971-01-12 | Nippon Musical Instruments Mfg | Loudspeaker |
JPS5023961B1 (en) * | 1970-11-04 | 1975-08-12 | ||
US4013846A (en) * | 1975-08-28 | 1977-03-22 | Minnesota Mining And Manufacturing Company | Piston loudspeaker |
JPS5474417A (en) * | 1977-11-26 | 1979-06-14 | Sony Corp | Multi-point driving type speaker |
JPS5527702A (en) * | 1978-08-18 | 1980-02-28 | Sony Corp | Vibrator for speaker |
US4284167A (en) * | 1979-06-04 | 1981-08-18 | Electronic Research Assoc., Inc. | Sound reproducing device |
FR2477824A1 (en) * | 1980-03-07 | 1981-09-11 | Spiteri Ernest | IMPROVEMENTS IN ELECTRODYNAMIC LOUDSPEAKERS WITH EXPANDED POLYSTYRENE FLAT MEMBRANE |
JPS622866Y2 (en) * | 1981-03-24 | 1987-01-22 | ||
FR2542549B1 (en) * | 1983-03-09 | 1987-09-04 | Lemaitre Guy | ANGLE ACOUSTIC DIFFUSER |
US4672675A (en) * | 1985-08-19 | 1987-06-09 | International Jensen Incorporated | Multiple speaker loudspeaker with conductive bridge |
JP2592066Y2 (en) * | 1992-03-31 | 1999-03-17 | 株式会社ケンウッド | Speaker |
JP4081842B2 (en) * | 1998-03-11 | 2008-04-30 | ソニー株式会社 | Speaker device |
WO2006078623A1 (en) * | 2005-01-18 | 2006-07-27 | Intier Automotive Inc. | Trim panel assembly for retaining an acoustical device |
US20070071274A1 (en) * | 2005-09-21 | 2007-03-29 | Andersen Morten K | Insert moulded surround with integrated lead-out wires |
US20120224740A1 (en) * | 2010-12-21 | 2012-09-06 | Hon Hai Precision Industry Co., Ltd. | Speaker with magnetic field enhancing washer and disk |
US20150382110A9 (en) * | 2013-03-14 | 2015-12-31 | Lewis Athanas | Acoustic Transducer and Method for Driving Same |
JP1549098S (en) * | 2015-11-26 | 2016-05-16 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1918422A (en) * | 1926-06-22 | 1933-07-18 | United Res Corp | Sound-reproducing device |
US2124834A (en) * | 1936-08-17 | 1938-07-26 | Stenger Willebald Conrad | Acoustical diaphragm |
US2396825A (en) * | 1943-10-08 | 1946-03-19 | Electro Voice Mfg Co Inc | Diaphragm-engaging ring |
US2789161A (en) * | 1951-04-05 | 1957-04-16 | Joseph B Brennan | Loud-speakers |
US3236958A (en) * | 1961-04-25 | 1966-02-22 | Electronic Res Associates Inc | Loudspeaker system |
NL283889A (en) * | 1961-10-04 | |||
FR1326414A (en) * | 1962-02-28 | 1963-05-10 | Sound panel | |
US3143183A (en) * | 1963-02-25 | 1964-08-04 | Herbstman Sidney | Direct radiator high fidelity loudspeaker |
US3284581A (en) * | 1963-06-03 | 1966-11-08 | Columbia Broadcasting Syst Inc | Loud speaker construction |
-
1964
- 1964-02-05 US US342827A patent/US3351719A/en not_active Expired - Lifetime
-
1966
- 1966-08-02 GB GB34569/66A patent/GB1157463A/en not_active Expired
- 1966-09-06 DE DE19661487283 patent/DE1487283A1/en not_active Withdrawn
- 1966-10-24 NL NL6615043A patent/NL137671C/xx active
- 1966-10-26 FR FR81623A patent/FR1497849A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3123098A1 (en) * | 1981-06-11 | 1983-01-05 | Martin 4600 Dortmund Stute | Diaphragm for electroacoustic transducer systems |
EP0538381A1 (en) * | 1990-07-11 | 1993-04-28 | Harman Int Ind | Loudspeaker suspension. |
EP0538381A4 (en) * | 1990-07-11 | 1993-08-11 | Harman International Industries, Incorporated | Loudspeaker suspension |
Also Published As
Publication number | Publication date |
---|---|
NL6615043A (en) | 1968-04-25 |
NL137671C (en) | 1973-06-15 |
FR1497849A (en) | 1967-10-13 |
DE1487283A1 (en) | 1969-04-03 |
US3351719A (en) | 1967-11-07 |
DE1487283B2 (en) | 1970-10-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |