EP1586219A1 - Lautsprecher - Google Patents
LautsprecherInfo
- Publication number
- EP1586219A1 EP1586219A1 EP03815541A EP03815541A EP1586219A1 EP 1586219 A1 EP1586219 A1 EP 1586219A1 EP 03815541 A EP03815541 A EP 03815541A EP 03815541 A EP03815541 A EP 03815541A EP 1586219 A1 EP1586219 A1 EP 1586219A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- membrane
- loudspeaker according
- magnet
- magnet system
- loudspeaker
- 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
- 239000012528 membrane Substances 0.000 claims abstract description 123
- 239000011324 bead Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 5
- 239000002657 fibrous material Substances 0.000 claims description 5
- -1 Bextrenen Polymers 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 239000000123 paper Substances 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 3
- 230000005520 electrodynamics Effects 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 229910001047 Hard ferrite Inorganic materials 0.000 claims description 2
- 229920000271 Kevlar® Polymers 0.000 claims description 2
- 239000004642 Polyimide Substances 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 229910000639 Spring steel Inorganic materials 0.000 claims description 2
- 229920006328 Styrofoam Polymers 0.000 claims description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 2
- PXAWCNYZAWMWIC-UHFFFAOYSA-N [Fe].[Nd] Chemical compound [Fe].[Nd] PXAWCNYZAWMWIC-UHFFFAOYSA-N 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000006261 foam material Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 239000004761 kevlar Substances 0.000 claims description 2
- 239000000696 magnetic material Substances 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 229920006327 polystyrene foam Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 2
- 150000002910 rare earth metals Chemical class 0.000 claims description 2
- 239000008261 styrofoam Substances 0.000 claims description 2
- 229920000784 Nomex Polymers 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 239000004763 nomex Substances 0.000 claims 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000013016 damping Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- H04R7/127—Non-planar diaphragms or cones dome-shaped
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
-
- 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
- H04R9/043—Inner suspension or damper, e.g. spider
Definitions
- the invention relates to a loudspeaker, which is designed as an electrodynamic transducer, with at least a first magnet, a first membrane with a membrane outer edge, which spans a membrane outer edge plane, a first bead surrounding the first membrane for flexible storage of the first membrane, a first voice coil , which is directly or indirectly attached to the first membrane and a magnet system having at least a first magnet, further a support structure (basket) for receiving the magnet system and the first membrane, wherein the first membrane is connected to the support structure via the first bead, and the support structure has a membrane-oriented front side and an oppositely oriented back side.
- loudspeakers Due to the today required problem-free mounting possibilities of loudspeakers, for example in the motor vehicle or aerospace industry, however, it is required that loudspeakers are as flat as possible and not very bulky, or that they can be mounted on as flat a surface as possible, for example on motor vehicle doors or coverings without special preparation.
- Motor vehicles are usually kept very flat and have a variety of wiring harnesses and electrical systems that largely fill the existing space and cavity.
- the guidance and mechanics of the windows and the closing mechanism of the door with the necessary struts for side impact protection often require large space, so that the installation of a loudspeaker desired there often encounters great difficulties.
- the inventor has recognized that a solution to the above-mentioned problem can be achieved by providing the loudspeaker with a diaphragm which is curved in the direction of sound propagation and which is driven by a voice coil and a magnet, the magnet system being at least partially inserted into that of the Diaphragm spanned volume immersed, creating a very flat design of the support structure or basket is possible.
- a magnet system is used with at least one permanent magnet which forms an annular gap, optionally by means of the aid of a yoke or another magnet, wherein the
- Voice coil can dip in this annular gap.
- the magnet system can be brought very close to the membrane, so that the membrane outer edge surface formed by the outer edge of the membrane is cut by the magnet system. On the one hand, this produces an extremely flat design of the magnet. On the other hand, a very good and broadband acoustic characteristics of the speaker system is obtained.
- the inventor proposes to use the loudspeaker known per se at least consisting of: a first magnet, a first membrane having a membrane outer edge which spans a membrane outer edge plane, a first bead surrounding the first membrane for flexibly supporting the first membrane, a first voice coil directly or indirectly attached to the first membrane, and a magnet system having at least one first magnet (Permanent magnet), further comprising a support structure (basket) for receiving the magnet system and the first membrane, wherein the first membrane is connected to the support structure via the first bead, and the support structure has a membrane-oriented front side (sound propagation preferential direction) and an oppositely oriented one Reverse has to improve to the effect that the first membrane is at least partially raised to the top and the region of the first diaphragm to which the first voice coil is mounted, is arranged in front of the membrane outer edge plane, - the first membrane has a diameter which is larger is the diameter of the first voice coil that moves this diaphragm.
- the inventor proposes that the magnet system at least intersect the membrane outer edge plane or, if appropriate, even be arranged above the membrane outer edge plane.
- the magnet system may preferably have a first annular gap in which the first voice coil can dip. As a result, a particularly good leadership is achieved. If the voice coil designed sufficiently large, then the natural vibration behavior of the membrane can thereby stabilize much better and the membrane can be made very flat and thin. This increases the efficiency of the system and the stroke of the membrane can be reduced.
- the loudspeaker may additionally be provided to arrange at least one further membrane within the first membrane, so that a multi-way system can thereby be realized.
- the magnet system can also have at least one further annular gap, into each of which a further voice coil can dive for a further membrane.
- the first membrane may also have an inner further bead, which is connected to the magnet system, so that in this way an additional centering of the membrane is achieved.
- the membrane can also be made in several parts. This has the advantage that in this way the central area can be designed with other lighter materials, so that a better dynamic at high frequencies is achieved.
- the speaker can be configured not only as a one-way system, but also as a two-, three- or Mehrwegesystem.
- a further advantageous embodiment of the loudspeaker may consist in that the magnet system has at least one ring magnet and at least one pole plate, which form the at least one air gap.
- the magnet system can be formed of a plurality of ring magnets, a lower pole plate and each magnet of an upper pole plate, wherein the air gaps are arranged between the pole plates. This embodiment of the magnet system makes a very effective multipath system possible, the inner annular gap being provided for driving a tweeter.
- the magnets of the magnet system can be enclosed in a ring shape by the respective associated voice coil.
- pole plates of the magnet system are made of magnetic material, as a result, a high flux density can be generated with well-defined field lines in the region of the air gap.
- the magnet system can be configured such that a ring magnet is located within a larger and at the same time outside a smaller voice coil. It is particularly advantageous here to design the rear pole plate as a magnetic yoke, so that a narrow air gap, in each case inside and outside of the ring magnet, is formed by the front and rear pole plate.
- the materials of the permanent magnet can be of very different variants. However, particularly advantageous are neodymium iron or neodymium iron boron or rare earth cobalt (eg SmCo 5 , Sm 2 C ⁇ 7 ) or other hard ferrite.
- At least one magnet be provided with at least one screw and / or adhesive and / or clamping elements on the membrane. rack is attached, and combinations of these mounting options are proposed.
- the inventor proposes that it may consist for example of a foamed material, which is preferably provided with a one- or two-sided barrier layer.
- a foamed material which is preferably provided with a one- or two-sided barrier layer.
- these may be an aluminum and magnesium foam, polystyrene foam, PVC, polyolefin material, polyurethane, polyester, styrofoam or sandwich panels with honeycomb construction.
- Another variant of the configuration of the membrane or of a part of the membrane can consist in that it consists of a shaped film or sandwich products, preferably of polyester, polyimide, Bextrenen, polycarbonate, aluminum, magnesium, polypropylene, paper, fibrous materials, Kevlar, Carbon fiber, glass fiber, No ex or from mixed products of the aforementioned materials is produced.
- an inversely shaped Dust Cap also called dome, dome or Staubschutzkalotte be arranged.
- the at least one intended bead can for example be made of rubber or coated foam material, fiber materials or paper.
- Dust Cap In the central region of a membrane, the above-mentioned “Dust Cap” can be attached, with a centering, for example made of spring steel or fiber materials, can be located behind it.
- the inventor proposes that this be made, for example, from plastics or metal materials, it being advantageous to provide the basket with openings in order to achieve a physical see coupling to the back air volume to cause any existing trim or a housing.
- the back of the basket can be designed as a level, so that behind the speaker no openings for installation are necessary.
- a protective grid may be provided in front of the membrane, as is common practice in the art.
- the inventor proposes that the ratio B / T of greatest width B of the loudspeaker's largest diaphragm to maximum loudness of the loudspeaker T with respect to the components diaphragm and magnet system is greater than 3/1, preferably greater than 5/1, preferably greater than 10/1.
- Fig. 1 one-way speaker with a permanent magnet
- Fig. 2 one-way speaker with a permanent magnet and dust cap
- Fig. 3 Variants of the membrane design in one-way speaker with a permanent magnet
- Fig. 4 one-way speaker with a permanent magnet and centering as a metal spring
- Fig. 5 one-way speaker with a permanent magnet and centering of tissue
- Fig. 6 two-way speaker with a permanent magnet and central tweeter
- Fig. 7 one-way loudspeaker with two permanent magnets
- Fig. 8 one-way loudspeaker with two permanent magnets and dust cap
- Fig. 9 two-way loudspeaker with three permanent magnets and central tweeter;
- Fig. 10 Two-way speaker with three permanent magnets and slightly conical basket;
- Fig. 11 magnified magnet system of Figure 5;
- Fig. 12 Rear view of the basket
- Fig. 13 Front view of the membrane and central tweeter with peripheral screw holes
- Fig. 14 Front view of the membrane and central tweeter without marginal screw holes.
- FIG. 1 shows a section through a simple broadband and inventively designed loudspeaker with a single membrane 2, which is spanned on a flat running basket 1, which runs flat on the back.
- the membrane 2 is connected at its outer edge 32 by a bead 3 with the basket 1 and clamped by its outer edge 32 has an outer edge plane 30.
- a magnet system 4 is fixed, which consists of a ring-shaped permanent magnet 5, the front has a likewise annularly shaped pole plate 6 and on the back to a yoke 13 expiring rear pole plate 7.
- an air gap 8 in which the voice coil 9, which is connected to the membrane 2 in the region 28, can dip.
- the Schallausbreitungsvorzugsplatz which also defines the front of the speaker is indicated by the arrow 33. Furthermore, the outer diameter D is the right Diaphragm 2 and the smaller diameter d of the associated voice coil 9 indicated on the right side.
- the magnet system 4 due to the curvature of the membrane 2 and the close attachment of the voice coil 9 is moved strongly forward, so that the front pole plate 6 and the effective region of the yoke 13, which form the air gap 8 are located in front of the membrane outer edge plane 30 ; the permanent magnet 5 is cut by the membrane outer edge plane 30. As a result, an extremely flat design of the speaker is possible.
- the permanent magnet 5 or the entire magnet system 4 can even lie completely in front of the diaphragm outer edge plane.
- FIG. 2 shows a similar embodiment of a broadband one-way loudspeaker, but in this version the membrane 2 has been replaced in a central region by a lighter concave material 12.
- the replacement of the central portion of the membrane 2 by lighter material has the advantage that the inertial mass of the membrane is thereby reduced and the useful frequency range of the loudspeaker can be extended to higher frequencies.
- FIG. 3 shows a further variant of a one-way system, similar to the embodiment of FIG. 1.
- FIG. 3 has been divided into upper and lower variants of a membrane design.
- the upper variant of the membrane design shows a flat conical membrane 2, which leads from the outer bead 3 to the region of the voice coil and then has a slightly concave shape in the central region.
- the membrane has a centering 20 which is formed here in the form of a metal spring.
- the lower parts of Figure 3 shows another exemplary shape of the membrane 2, the edge initially largely flat, then an increase experiences a maximum in the field of the voice coil and is concave again in the central region.
- FIG. 4 once again shows the same membrane contours as FIG. 3, but the edges 3 arranged on the edges are provided with a plurality of wavy lines, while in FIG. 3 only one protrusion is provided for the bead.
- the centering 20 of the membrane 2, which is shown in FIG. 4, consists here by way of example of a fabric material.
- FIG. shows a section through a two-way loudspeaker according to the invention, in which case the outer membrane 2 corresponds to the embodiment from FIG. 2, but an additional tweeter has been integrated into the magnet system 4 in the central area.
- the magnet system has been changed from the figures 1 or 2 to the effect that the rear pole plate has a second, centrally located yoke 14, which forms a second air gap 15 in connection with the front pole plate 6.
- a second voice coil 17 can dip, which drives a thin tweeter membrane 18.
- the high-tone membrane 18 is fastened here via a bead 19 on the front pole plate 6 of the magnet system 4.
- FIG. 6 again shows a modification of the two-way loudspeaker according to the invention from FIG. 5, in which case the outer membrane 2 in its two illustrated variant forms corresponds to the membrane forms from FIG.
- FIG. 7 shows a further variant according to the invention of a one-way loudspeaker.
- the shape of the embodiment of the loudspeaker corresponds to FIG. 1, the essential difference being in the magnet system.
- both an inner permanent magnet 5 and a further outer annular permanent magnet 22 are provided, both permanent magnets having front pole plates 6 and 23, between which see the single air gap 8 is formed.
- both permanent magnets having front pole plates 6 and 23, between which see the single air gap 8 is formed.
- the advantage of such an embodiment is essentially that this design without reflux makes it possible to significantly reduce the overall height of the magnet system or on the other hand to achieve a very large stroke at the same height.
- FIG. 8 shows a further sectional view of a one-way loudspeaker having the same magnet system with two ring magnets as FIG. 7, the design of the diaphragm again being designed such that a so-called "dust cap” is present in the central region. which reduces the inertial mass of the vibrating membrane.
- FIG. 9 shows a development with additionally arranged tweeters, wherein a third permanent magnet 25 with a front pole plate 26 is shown for the voice coil of the tweeter and between the centrally located front pole plate 26 and the middle pole plate 23, the air gap for the voice coil 17 of the tweeter 24 is formed.
- a basket 1 is shown in FIG. 10, which does not eb e on its rear side, but instead opposes the sound preferred direction of the loudspeaker. Chers is formed arched. Such a slight curvature, which however should have a maximum angle ⁇ from the plane of not more than 20 °, preferably not more than 10 °, preferably not more than 5 °, may be helpful when a particularly flat design of the speaker, due to special installation situations, is necessary.
- the loudspeaker shown here is comparable to the embodiment from FIG. 9, although it should be pointed out that such a variation is also possible for all loudspeakers previously shown.
- FIG. 11 shows an enlarged view of the magnet system from FIG. 6.
- This magnet system has a ring-shaped permanent magnet 5.
- Rear is a pole plate, which is formed on both sides in front of the first yoke 13 and a second yoke 14. On the front side of the permanent magnet 5 there is a further pole plate, which together with the first and the second yoke form a first air gap 8 and a second inner air gap 15.
- a voice coil 9 which is responsible for the drive of the outer membrane 2, while immersed in the inner air gap 15, the voice coil 17 of the tweeter 24.
- the tweeter 24 is equipped with a high-tone membrane 18, which has at the outer edge via a small bead 19 which is connected to the pole plate 6.
- a damping element 27 is preferably used in the central region of the magnet system, which may for example consist of foam or soft rubber.
- FIG. The rear view of an exemplary loudspeaker according to the invention is shown in FIG. It shows in the It is pointed out that, of course, other designs and contours of the openings are also within the scope of the invention. In particular, it is also pointed out that the loudspeaker according to the invention not only has to have a round outer shape, but also oval, quadrangular or other per se known contours are possible.
- FIGS. 13 and 14 the plan view of a two-way loudspeaker according to the invention is shown, wherein the optional protective grille is not shown here for a better view.
- FIG. 13 additionally has four screw holes 11 for fastening the loudspeaker, while FIG. 14 shows an embodiment of the basket 1 without screw holes.
- the speaker according to the invention which operates on the principle of the spring-mass system or the dynamic speaker, that has a voice coil in the air gap of a permanent magnet, compared to the conventional systems usually has a much larger voice coil and thus it allows the magnet system to be positioned within the voice coil.
- This larger voice coil has the further advantage that the membrane is driven further on the outer diameter. As a result, the natural vibration behavior of the membrane is substantially stabilized or reduced and they can thereby be much flatter, lighter and thinner designed.
- the stroke of the voice coil is, for example, depending on the requirements and size, between 0.5 and 20 mm + / - and the diameter is 10 mm to 100 mm at a winding height from about 1 mm.
- the air gap for the outer membrane with coil between 0.1 mm to 3 mm and the air gap of the coil for the tweeter correspondingly larger can be selected between 0.2 mm to 4 mm. This allows you to adjust the efficiency of the two systems together.
- the voice coil for the tweeter can advantageously have the following dimensions: diameter between 6 mm and 50 mm, height from 0.1 to 10mm +/- and a stroke of 0.1 to 5 mm +/-.
- the voice coil used can be formed with one or more coil layers, preferably two-ply, and also with and without carrier.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Liquid Crystal (AREA)
- Surgical Instruments (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10303030A DE10303030A1 (de) | 2003-01-25 | 2003-01-25 | Treiber |
DE10303030 | 2003-01-25 | ||
PCT/EP2003/012940 WO2004068898A1 (de) | 2003-01-25 | 2003-11-19 | Lautsprecher |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1586219A1 true EP1586219A1 (de) | 2005-10-19 |
EP1586219B1 EP1586219B1 (de) | 2009-12-16 |
Family
ID=32667869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03815541A Expired - Lifetime EP1586219B1 (de) | 2003-01-25 | 2003-11-19 | Lautsprecher |
Country Status (8)
Country | Link |
---|---|
US (1) | US7286681B2 (de) |
EP (1) | EP1586219B1 (de) |
JP (1) | JP4404780B2 (de) |
CN (1) | CN1732710A (de) |
AT (1) | ATE452512T1 (de) |
AU (1) | AU2003303844A1 (de) |
DE (2) | DE10303030A1 (de) |
WO (1) | WO2004068898A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104581550A (zh) * | 2014-12-31 | 2015-04-29 | 苏州恒听电子有限公司 | 一种具有凹点的新型振膜及受话器 |
Families Citing this family (57)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE602004013605D1 (de) * | 2003-08-19 | 2008-06-19 | Matsushita Electric Ind Co Ltd | Lautsprecher |
DE102004034882B4 (de) * | 2004-07-19 | 2015-08-27 | Norman Gerkinsmeyer | Treiber |
US8090139B2 (en) * | 2005-06-29 | 2012-01-03 | Benjamin Reinecke | Diaphragm for an electroacoustic transducer, and electroacoustic transducer |
KR101343143B1 (ko) * | 2006-05-22 | 2013-12-19 | 오디오 픽셀즈 리미티드 | 압력파 생성 액추에이터 장치 및 액추에이션 방법 |
EP2033480B1 (de) * | 2006-05-22 | 2012-07-11 | Audio Pixels Ltd. | Lautstärke- und Tonregelung in Direkt-Digital-Lautsprechern |
US8457338B2 (en) | 2006-05-22 | 2013-06-04 | Audio Pixels Ltd. | Apparatus and methods for generating pressure waves |
DE102007030811A1 (de) * | 2007-04-26 | 2008-11-06 | Airbus Deutschland Gmbh | Flachlautsprecher |
EP2846557B1 (de) * | 2007-11-21 | 2019-04-10 | Audio Pixels Ltd. | Verbesserte Lautsprechervorrichtung |
US8345897B2 (en) * | 2008-03-31 | 2013-01-01 | Mitsubishi Electric Engineering Co., Ltd | Electromagnetic conversion unit |
EP2180721A1 (de) * | 2008-10-21 | 2010-04-28 | Lautsprecher Teufel GmbH | Flachmembranlautsprecher |
JP2010114612A (ja) * | 2008-11-06 | 2010-05-20 | Weistech Technology Co Ltd | 小型スピーカを備える表示器、及び小型スピーカ構造 |
EP2422528B8 (de) | 2009-04-23 | 2016-06-29 | Audio Pixels LTD. | Staubschutzvorrichtung für flachlautsprecher |
DE102009024709A1 (de) * | 2009-06-12 | 2010-12-16 | Klaus Reck | Hochtonlautsprecher |
FR2955446B1 (fr) | 2010-01-15 | 2015-06-05 | Phl Audio | Transducteur electrodynamique a dome et suspension flottante |
FR2955445B1 (fr) * | 2010-01-15 | 2013-06-07 | Phl Audio | Transducteur electrodynamique a dome et suspension interne |
FR2955444B1 (fr) | 2010-01-15 | 2012-08-03 | Phl Audio | Systeme de haut-parleur coaxial a chambre de compression |
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2003
- 2003-01-25 DE DE10303030A patent/DE10303030A1/de not_active Withdrawn
- 2003-11-11 US US10/542,521 patent/US7286681B2/en not_active Expired - Fee Related
- 2003-11-19 DE DE50312249T patent/DE50312249D1/de not_active Expired - Lifetime
- 2003-11-19 EP EP03815541A patent/EP1586219B1/de not_active Expired - Lifetime
- 2003-11-19 AT AT03815541T patent/ATE452512T1/de not_active IP Right Cessation
- 2003-11-19 AU AU2003303844A patent/AU2003303844A1/en not_active Abandoned
- 2003-11-19 WO PCT/EP2003/012940 patent/WO2004068898A1/de active Application Filing
- 2003-11-19 JP JP2004567295A patent/JP4404780B2/ja not_active Expired - Fee Related
- 2003-11-19 CN CNA2003801076440A patent/CN1732710A/zh active Pending
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104581550A (zh) * | 2014-12-31 | 2015-04-29 | 苏州恒听电子有限公司 | 一种具有凹点的新型振膜及受话器 |
Also Published As
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CN1732710A (zh) | 2006-02-08 |
AU2003303844A1 (en) | 2004-08-23 |
JP4404780B2 (ja) | 2010-01-27 |
ATE452512T1 (de) | 2010-01-15 |
DE50312249D1 (de) | 2010-01-28 |
US7286681B2 (en) | 2007-10-23 |
EP1586219B1 (de) | 2009-12-16 |
JP2006513664A (ja) | 2006-04-20 |
WO2004068898A1 (de) | 2004-08-12 |
DE10303030A1 (de) | 2004-08-05 |
US20070009133A1 (en) | 2007-01-11 |
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