EP0914020A2 - Lautsprecher - Google Patents
Lautsprecher Download PDFInfo
- Publication number
- EP0914020A2 EP0914020A2 EP98119683A EP98119683A EP0914020A2 EP 0914020 A2 EP0914020 A2 EP 0914020A2 EP 98119683 A EP98119683 A EP 98119683A EP 98119683 A EP98119683 A EP 98119683A EP 0914020 A2 EP0914020 A2 EP 0914020A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive system
- loudspeaker
- flat membrane
- centering
- membrane
- 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
Links
Images
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
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- 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
- H04R9/041—Centering
Definitions
- the invention is concerned with reducing the overall depth of loudspeakers with flat membranes.
- Speakers with flat membranes are generally designed so that a Drive system is connected to a speaker basket.
- the flat membrane In the speaker basket the flat membrane is arranged with an axial distance to the drive system.
- the side of the flat membrane facing the drive system is marked with a Provide push rod which extends in the direction of the drive system. Becomes such a trained speaker with low-frequency sound signals a sound signal source, these are from the drive system in the Push rod and thus also lifting movements acting on the flat membrane reshaped, whereby the flat membrane in accordance with the supplied sound signals in vibrations reflecting a sound event are displaced.
- the flat diaphragm set in vibration along the center line of the loudspeaker maintains its centricity to the center line of the loudspeaker in every vibration state, it is fastened with elastic centering means by at least the edge of the flat diaphragm being connected to the loudspeaker basket by means of a so-called bead. If you left it alone with this type of centering, this would have to be very sufficient to achieve sufficient guidance of the flat membrane hard ". However, since a hard design of the corrugation considerably limits the range of use of such loudspeakers, in the case of woofers in particular, there has been a move towards providing additional centering means.
- the invention is therefore based on the object of having a loudspeaker Specify flat membrane, which despite the presence of in axial Centering means spaced apart from each other a reduced overall depth having.
- the radial distance is that of the flat membranes have ends of the support means facing away from the loudspeaker axis, at least 3 ⁇ 4 the distance between the loudspeaker center axis and the outer edge of the flat membrane, the wobble protection is particularly good Flat membrane reached.
- FIG 4 is a speaker 10 with a flat membrane 11 according to the state the technology shown.
- This speaker 10 is essentially one Drive system 12, a speaker basket 13 and said flat membrane 11 formed, which is at an axial distance from the drive system 12 in the speaker basket 13 is arranged.
- the drive system 12 is in the present case by a Inference arrangement 12.1 and a permanent magnet 12.2 formed, a Air gap 14 remains in the drive system 12, into which a voice coil 15 immersed. If the voice coil 15 with a low-frequency sound signals When the audio signal source is applied (everything not shown), the voice coil moves 15 in the direction of the loudspeaker central axis 16. This movement of the voice coil 15 is because the voice coil 15 via a push rod 17 (also voice coil former called) with the side facing the drive system 12 Flat membrane 11 is connected, transferred to the flat membrane 11.
- a push rod 17 also voice coil former called
- the first centering device 18.1 which is also known as a bead, connects the edge of the flat membrane 11 with the speaker basket 13.
- the second centering means 18.2 in the form of So-called centering membrane surrounds the voice coil bobbin 17 without a gap and is also connected to the speaker basket 13. What is striking is this Type of arrangement that between the first centering means 18.1 and Centering membrane 18.2 a distance A in the direction of the loudspeaker central axis 16 consists.
- This distance A is necessary to tilt the voice coil bobbin 17, which is also referred to as tumbling, during the movement the voice coil bobbin 17 in the direction of the loudspeaker central axis 16 to exclude. Greater distances A than that shown in Figure 1 reduce the tendency to wobble, but cause the depth T of the Speaker 10 enlarged even further. Can the distance A including depth T of the speaker 10, however, due to installation dimensions cannot be realized for the loudspeaker 10, only the distance A can be charged a smaller stroke of the speaker 10 can be reduced, because at one less stroke of the flat membrane 11 in the direction of the loudspeaker central axis 16 a wobble of the voice coil bobbin 17 does not appear as strongly. A reduced stroke leads to the fact that such speakers 10 for the Bass reproduction become unusable.
- the height H is a part of the distance A1 between the flat membrane 11 and the Fills drive system 12. Regardless of the requirement that the distance A between the two centering means 18.1 and 18.2 for bass reproduction should be as large as possible, the height H of the centering membrane 18.2 leads inevitably to increase the distance A1 and thus also the depth T of the Speaker 10.
- the side of the flat membrane facing the drive system 12 11 provided with support means 19 which are in the direction of the drive system 12 extend.
- the support means 19 With the ends 20 facing away from the flat membrane 11 the support means 19 with the centering means 18.2 in the form of the centering membrane 18.2 connected, the space which is connected radially to the drive system 12 then be used for centering without having to use centering the depth of the loudspeaker 10 of the centering membrane 18.2 got to.
- the individual implementations according to the invention are shown in FIGS. 1-3, which, however, do not show scale reproductions, can be removed.
- the loudspeaker 10 is driven by a drive system 12 and a speaker basket 13 is formed.
- the flat membrane 12 is axial Distance to the drive system 12 used in the speaker basket 13.
- the outer edge of the flat membrane 12 is by means of the bead 18.1 with the Speaker basket 13 connected.
- the side facing the drive system 12 the flat membrane 11 is provided with a support means 19 which one has a trapezoidal cross-section and which is in the direction of the drive system 12 extends.
- the end 20 of the flat membrane facing away from the Support means 19 is connected to the centering membrane 18.2, the Centering membrane 18.2 extends away from the drive system 12 and on it other end is connected to the speaker basket 13.
- the embodiment according to FIG. 2 differs from the embodiment according to Figure 1 in that the centering membrane connected to the support means 19 18.2 extends in the direction of the drive system 12. Even if the Centering membrane 18.2 in FIG. 2 is connected to the loudspeaker basket 13, can in another - not shown - embodiment, the centering membrane 18.2 can also be connected directly to the drive system 121.
- the embodiment according to FIG. 2 is also the flat membrane 11 and the support means 19 in one piece from foamed Plastic material formed.
- the embodiment according to FIG. 3 differs from the embodiment of FIG Figures 1 and 2 characterized in that the support means 19 from the connecting region 21st goes out between the voice coil bobbin 17 and the flat membrane 11 and from there is guided in an arc into the area 22, which extends radially to the Drive system 12 connects.
- the support means 19 from the connecting region 21st goes out between the voice coil bobbin 17 and the flat membrane 11 and from there is guided in an arc into the area 22, which extends radially to the Drive system 12 connects.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
- Figur 1
- einen Lautsprecher im Schnitt;
- Figur 2
- eine weitere Darstellung gemäß Figur 1;
- Figur 3
- einen weiteren Lautsprecher im Schnitt; und
- Figur 4
- einen Lautsprecher gemäß dem Stand der Technik.
Claims (3)
- Lautsprechermit einem Antriebssystem 12,mit einem Lautsprecherkorb 13, welcher mit dem Antriebssystem 12 verbunden ist,mit einer Flachmembran 11, welche in axialem Abstand zum Antriebssystem 12 angeordnet ist, wobei sich eine Schubstange 17, welche mit der Flachmembran 11 verbunden ist, in Richtung des Antriebsystems 12 erstreckt, undmit Zentriermitteln 18, welche die Flachmembran 11 zentrisch zum Antriebssystem 12 halten und führen,
dadurch gekennzeichnet,daß mit der dem Antriebssystem 12 zugewandten Seite der Flachmembran 11 Stützmittel 19 verbunden ist, die sich in Richtung des Antriebssystems 12 erstrecken, unddaß die der Flachmembran 11 abgewandten Enden 20 der Stützmittel 19 mittels von Zentriermitteln 18.2 mit dem Lautsprecherkorb 13 und/oder dem Antriebssystem 12 verbunden sind. - Lautsprecher nach Anspruch 1,
dadurch gekennzeichnet,
daß der radiale Abstand, den die von der Flachmembran 11 abgewandten Enden 20 der Stützmittel 19 zur Lautsprechermittelachse 16 haben, wenigstens ¾ des Abstandes zwischen der Lautsprechermittelachse 16 und dem äußeren Rand der Flachmembran 11 beträgt. - Lautsprecher nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die Flachmembran 11 und die Stützmittel 19 einstückig aus geschäumtem Kunststoffmaterial gebildet sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1997147955 DE19747955C2 (de) | 1997-10-30 | 1997-10-30 | Lautsprecher |
DE19747955 | 1997-10-30 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0914020A2 true EP0914020A2 (de) | 1999-05-06 |
EP0914020A3 EP0914020A3 (de) | 2004-09-22 |
EP0914020B1 EP0914020B1 (de) | 2007-06-27 |
Family
ID=7847105
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98119683A Expired - Lifetime EP0914020B1 (de) | 1997-10-30 | 1998-10-19 | Lautsprecher |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0914020B1 (de) |
DE (2) | DE19747955C2 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002089522A2 (de) * | 2001-04-25 | 2002-11-07 | Harman/Becker Automotive Systems (Straubing Division) Gmbh | Lautsprecher |
WO2005015950A1 (en) * | 2003-08-08 | 2005-02-17 | Koninklijke Philips Electronics N.V. | Loudspeaker with undulated membrane |
US8045745B2 (en) | 2005-11-21 | 2011-10-25 | Pioneer Corporation | Edge support for a speaker apparatus comprising multiple ridges |
DE102012214263A1 (de) * | 2012-08-10 | 2014-02-13 | Sennheiser Electronic Gmbh & Co. Kg | Dynamischer elektroakustischer Wandler |
GB2542382A (en) * | 2015-09-17 | 2017-03-22 | Gp Acoustics (Uk) Ltd | Low-profile loudspeaker |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5783995A (en) * | 1980-11-11 | 1982-05-26 | Matsushita Electric Ind Co Ltd | Speaker |
US4567327A (en) * | 1982-02-04 | 1986-01-28 | U.S. Philips Corporation | Flat-diaphragm transducer and method of manufacturing such a transducer |
US4764968A (en) * | 1985-03-03 | 1988-08-16 | Standard Elektrik Lorenz Aktiengesellschaft | Disk diaphragm for a loudspeaker |
EP0281774A2 (de) * | 1987-03-11 | 1988-09-14 | Blaupunkt-Werke GmbH | Lautsprecher |
DE3733000A1 (de) * | 1987-09-30 | 1989-04-13 | Rainer Cornelius Friz | Daempfungselemente fuer mehrwegmembranen |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1510797A (en) * | 1974-11-28 | 1978-05-17 | Bertagni J | Diaphragm for use in an electroacoustic transducer |
US4184563A (en) * | 1978-12-21 | 1980-01-22 | Bertagni Jose J | Planar diaphragm and supporting frame assembly |
WO1995014296A1 (en) * | 1993-11-18 | 1995-05-26 | Sound Advance Systems, Inc. | Improved planar diaphragm loudspeaker |
-
1997
- 1997-10-30 DE DE1997147955 patent/DE19747955C2/de not_active Expired - Fee Related
-
1998
- 1998-10-19 EP EP98119683A patent/EP0914020B1/de not_active Expired - Lifetime
- 1998-10-19 DE DE59814039T patent/DE59814039D1/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5783995A (en) * | 1980-11-11 | 1982-05-26 | Matsushita Electric Ind Co Ltd | Speaker |
US4567327A (en) * | 1982-02-04 | 1986-01-28 | U.S. Philips Corporation | Flat-diaphragm transducer and method of manufacturing such a transducer |
US4764968A (en) * | 1985-03-03 | 1988-08-16 | Standard Elektrik Lorenz Aktiengesellschaft | Disk diaphragm for a loudspeaker |
EP0281774A2 (de) * | 1987-03-11 | 1988-09-14 | Blaupunkt-Werke GmbH | Lautsprecher |
DE3733000A1 (de) * | 1987-09-30 | 1989-04-13 | Rainer Cornelius Friz | Daempfungselemente fuer mehrwegmembranen |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN Bd. 0061, Nr. 64 (E-127), 27. August 1982 (1982-08-27) -& JP 57 083995 A (MATSUSHITA ELECTRIC IND CO LTD), 26. Mai 1982 (1982-05-26) * |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002089522A2 (de) * | 2001-04-25 | 2002-11-07 | Harman/Becker Automotive Systems (Straubing Division) Gmbh | Lautsprecher |
WO2002089522A3 (de) * | 2001-04-25 | 2003-08-14 | Harman Becker Automotive Sys | Lautsprecher |
US7292707B2 (en) | 2001-04-25 | 2007-11-06 | Harman Becker Automotive Systems Gmbh | Loudspeaker |
WO2005015950A1 (en) * | 2003-08-08 | 2005-02-17 | Koninklijke Philips Electronics N.V. | Loudspeaker with undulated membrane |
US8045745B2 (en) | 2005-11-21 | 2011-10-25 | Pioneer Corporation | Edge support for a speaker apparatus comprising multiple ridges |
DE102012214263A1 (de) * | 2012-08-10 | 2014-02-13 | Sennheiser Electronic Gmbh & Co. Kg | Dynamischer elektroakustischer Wandler |
US8879777B2 (en) | 2012-08-10 | 2014-11-04 | Sennheiser Electronic Gmbh & Co. Kg | Dynamic electroacoustic transducer |
DE102012214263B4 (de) | 2012-08-10 | 2019-01-24 | Sennheiser Electronic Gmbh & Co. Kg | Dynamischer elektroakustischer Wandler |
GB2542382A (en) * | 2015-09-17 | 2017-03-22 | Gp Acoustics (Uk) Ltd | Low-profile loudspeaker |
EP3145217A1 (de) * | 2015-09-17 | 2017-03-22 | GP Acoustics (UK) Limited | Flacher lautsprecher |
CN106550307A (zh) * | 2015-09-17 | 2017-03-29 | Gp 声学(英国)有限公司 | 低型面扬声器 |
US10034094B2 (en) | 2015-09-17 | 2018-07-24 | Gp Acoustics (Uk) Limited | Low-profile loudspeaker |
Also Published As
Publication number | Publication date |
---|---|
DE59814039D1 (de) | 2007-08-09 |
EP0914020B1 (de) | 2007-06-27 |
EP0914020A3 (de) | 2004-09-22 |
DE19747955C2 (de) | 2002-11-07 |
DE19747955A1 (de) | 1999-05-06 |
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