WO2013013502A1 - 双磁铁双磁隙双线圈换能器的驱动器 - Google Patents
双磁铁双磁隙双线圈换能器的驱动器 Download PDFInfo
- Publication number
- WO2013013502A1 WO2013013502A1 PCT/CN2012/000995 CN2012000995W WO2013013502A1 WO 2013013502 A1 WO2013013502 A1 WO 2013013502A1 CN 2012000995 W CN2012000995 W CN 2012000995W WO 2013013502 A1 WO2013013502 A1 WO 2013013502A1
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- Prior art keywords
- magnetic
- coil
- double
- core
- annular
- Prior art date
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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
- H04R9/02—Details
- H04R9/025—Magnetic circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
- H04R2209/041—Voice coil arrangements comprising more than one voice coil unit on the same bobbin
-
- 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
Definitions
- the invention relates to a transducer, in particular to a driver of a double magnet double magnetic gap double line ⁇ transducer with a symmetric magnetic circuit and a symmetric winding circuit, belonging to the field of electrical electroacoustic transducers and electromechanical transducers. Background technique
- a driver for a dual magnetic gap double coil transducer is a prior art.
- X, JP6233380, JP0951597, 13S5748760, etc. disclose several technical solutions for a driver involving a double magnetic gap two-wire S-speaker.
- the object of the present invention is to overcome the deficiencies of the prior art, and to construct a symmetrical magnetic circuit and a symmetrical coil circuit, such as PCT/CN00/00241, CN200610020317. 7, PCT/CN2008/072668. CN201010278725.
- the cover and the base are made of a non-magnetic material, and the cover and the base are coupled as a whole by a plurality of non-magnetic fasteners arranged uniformly;
- the outer side constitutes a neat and rough annular platform surface of the base, the outer side of the annular platform surface is a cylindrical tubular wall of the base, the corresponding axial height of the inner circumferential surface of the cylindrical tubular wall or a top end thereof
- the portion is provided with a smooth and aligning vertical positioning surface and a horizontal
- a fastener made of a non-magnetic material passes through a shaft hole of the magnetic core in the magnetic circuit that has been pre-charged and is fixed to the axial center portion of the circular platform surface of the base.
- the magnetic circuit outer core that has been pre-charged is coaxially embedded and/or coupled to the annular platform surface of the base and matched by the vertical positioning surface of the base cylindrical wall and the horizontal positioning surface Fixed/or bonded positioning;
- the magnetic outer core encloses the inner core, and the permanent magnet of the outer core and the permanent magnet of the inner core have opposite polarities in an axial height;
- the upper plate of the magnetic core in the magnetic circuit and the upper plate of the outer core and the bisector Z--Z axis of the one-half axial height of the matching line web are the same a horizontal axis, a lower plate of the inner core and a lower pole of the outer core
- the bisector of the one-half axial height of the plate and the matching coil web Z--Z axis is also the same horizontal axis, with the inner core permanent magnet and the outer core permanent magnet a bisector of the one-half axial height w - - the W axis is a horizontal symmetry axis, and the inner core and the central axis of the outer core are Y - - Y axes being vertical symmetry axes, the double
- the magnet double-magnetic gap double-coil transducer has two sets of symmetric magnetic circuits which are vertically symmetric and bilaterally symmetric in terms of geometric shape and magnetic properties, and two sets of symmetric line graph circuits which are vertically symmetric and
- the base annular groove is provided with a discharge magnetic circuit and thermal energy emitted by the coil circuit and the penetrating air hole which is arranged to reduce the air damping of the transducer vibration system, when the base geometric size and structural strength
- each of the penetrating air holes has as large a projected area as possible and is equal to each other, and a center or a center line of the penetrating air holes is disposed on the bobbin/or the coaxial isometric projection a circumferential line on the plane, and maintaining the left-right symmetrical state of the coil circuit while the transducer vibration system vibrates up and down;
- the gap double coil transducer is a driver for an electroacoustic transducer with resistive load characteristics or similar to resistive load characteristics and ultra high efficiency.
- a driver for a dual magnet double magnetic gap double turn ⁇ transducer the permanent magnet being a neodymium iron boron magnet/or a rare earth permanent magnet.
- the driver of the double magnet double magnetic gap double coil transducer comprises a magnetic circuit and a frame and a base integrated therewith, an inner core mounted on the axial center of the convex platform surface of the base, and the inner core is surrounded
- Two annular magnetic gaps of coaxial equal diameter are formed between the perpendicular peripheral surfaces of the mutually matching plates of an outer magnetic core mounted coaxially, and a turn skeleton inserted into the annular magnetic gap is electrically insulated from each other in parallel a magnet wire and a line diagram, a diaphragm and a planar sound board coupled to the line skeleton and the at least one elastic wave, the diaphragm or the sound board is vibrated by the piston movement of the bobbin, or
- the diaphragm detects the sound pressure change of the sound and senses the corresponding audio signal in the line graph.
- the frame is a frame of non-magnetically permeable material / or the frame and the base are fused into a single structure;
- a fastener made of a non-magnetic material passes through a shaft hole of the magnetic core in the magnetic circuit that has been pre-charged and is fixed to the axial center portion of the circular platform surface of the base.
- the magnetic circuit outer core that has been pre-charged is coaxially embedded and/or coupled to the annular platform surface of the base and matched by the vertical positioning surface of the base cylindrical wall and the horizontal positioning surface Fixed/or bonded positioning;
- the magnetic outer core encloses the inner core, and the permanent magnet of the outer core and the permanent magnet of the inner core have opposite polarities in an axial height;
- An annular magnetic gap of equal diameter in which two line patterns of coaxial equal diameter are inserted into the annular magnetic gap, and the direction of the two turns and the direction of current flowing through the coil are specified, so that the coils are at the same working moment Producing electric power F in the same direction;
- the upper plate of the magnetic core in the magnetic circuit and the upper plate of the outer core and the bisector of the one-half axial height of the matching coil of the coil 1 "--Z axis are the same a horizontal axis
- the lower plate of the inner core and the lower plate of the outer core and the bisector Z--Z axis of the one-half axial height of the matching coil web are also a horizontal axis
- the bisector W--W axis of the inner core permanent magnet and the one-half axial height of the outer core permanent magnet is a horizontal symmetry axis
- the center axis Y--Y axis of the outer core is a vertical symmetry axis
- the double-magnet double-magnetic gap double-coil transducer has two sets of symmetric magnetic circuits symmetrically and bilaterally symmetric in terms of geometry and magnetic properties, and Two sets of symmetrical line ⁇ circuits with upper and lower symmetry and bilateral symmetry in terms of geometric shape
- the base annular groove is provided with heat energy emitted by the discharge magnetic circuit and the circuit diagram circuit, and the penetrating air hole uniformly arranged to reduce the air damping of the transducer vibration system, when the base geometry and structural strength allow
- Each of the penetrating vents has as large a projected area as possible and equal to each other, and the center or center line of the penetrating vent is disposed on the bobbin skeleton or the coaxial isometric ⁇ Projecting a circumferential line of the plane, and maintaining the left-right symmetrical state of the line graph circuit while the transducer vibration system vibrates up and down;
- the inductance of the double magnet double-magnetic gap double-line ⁇ transducer and the back electromotive force induced during the reciprocating motion cancel each other by having a phase angle of 180 degrees
- the double magnet double magnetic gap double A coil transducer is a driver of an electroacoustic/or electromechanical transducer having a resistive load characteristic or an approximately resistive load characteristic and an ultra high efficiency.
- a driver for a dual magnet double magnetic gap double coil transducer the permanent magnet being a neodymium iron boron magnet/or a rare earth permanent magnet.
- an electroacoustic transducer/or electromechanical transducer having good heat dissipation function, low distortion, and high efficiency can be prepared.
- a conventional driver can be used to replace two conventional drivers.
- the cooling magnetic fluid is no longer used in the magnetic gap, the input sound power is 250W, the frequency response range is 350Hz--5000Hz, and the maximum output sound pressure reaches 139dBaim.
- Folding horn speaker They operate reliably in harsh climates from -45'C to +50'C.
- Fig. 1 is a longitudinal sectional view showing a prior art embodiment 1 and a modification thereof
- Fig. 2 is a longitudinal sectional view showing a prior art embodiment 2 and a modification thereof.
- Figure 3 shows a longitudinal section assembly view of prior art embodiment 3.
- Fig. 4 is a longitudinal sectional assembly view showing a first embodiment of the present invention.
- Fig. 6 is a rear plan view showing Embodiment 1 of the present invention.
- Figure 7 shows a longitudinal section of a folding horn loudspeaker using a drive of the present invention.
- Fig. 8 is a longitudinal sectional assembly view showing a second embodiment of the present invention.
- the main components of the present invention correspond to the labels as follows:
- Coil 110A-310B Annular magnetic gap
- Ring-shaped yoke 141-341 Elastic wave
- Non-magnetic flux fasteners 172-372 non-magnetically conductive washers
- Non-magnetic nuts 152-352 heat sink fins
- non-magnetic fastener 904 middle cylinder bracket
- blowpipe 906 middle cylinder
- Figure 1 is a longitudinal sectional view showing a prior art embodiment 1 and a modification thereof.
- FIG. 6 This is a partial cross-sectional view of the magnetic core of the embodiment of FIG. 6 disclosed in the Japanese Patent Publication No. CN200510091936.0 and PCT/CN2008/072668, which is incorporated by the present disclosure, including the coil 109 and the line skeleton 107. ).
- the upper plate 103A and the lower plate 103B are two disk-shaped plates of equal thickness and equal projection area, coaxially mounted, and a matching neodymium-iron-boron magnet 102 is bonded to the upper plate 103A and the lower plate. Between 103B, the ring-shaped yoke 113 is fitted to the axial center of the above-mentioned magnetic core.
- the inner peripheral surface of the element 113 and the vertical peripheral surfaces of the elements 103A and 103B constitute two coaxial equal-diameter rings.
- the electromagnetic wire cross-sectional area of the coil 109A and the coil 109B, the number of coils of the wire, the coil of the coil, the resistance of the wire, the absolute value of the inductance of the wire, and the tension at the time of winding are equal to each other, and become a coil after being connected in series.
- the zonal Z--Z axis which constitutes the upper plate 103A, the lower plate 103B and the one-half axial height of the coil web is a horizontal symmetry axis.
- the bisector X--X axis of the one-half axial height of the permanent magnet 102 is a horizontal symmetry axis
- the Y--Y center axis of the element 103A, the element 102, and the element 103B is a vertical symmetry axis.
- the absolute value of the inductance of the two coils 109A and 109B of the present embodiment The back electromotive force induced during the reciprocating motion cancels each other by having a phase angle of 180 degrees.
- This embodiment is a set of double magnetic gap double-line internal magnetic transducer drivers having a resistance-bearing characteristic or a resistance-bearing characteristic and having ultra-high sensitivity and high fidelity quality.
- PCT/CN2008/072668 FIG. 6, FIG. 9 to FIG. 12, FIG. 20, FIG. 21 and CN200510091936.0 and US2005/0099255A1 which have been disclosed by the present inventors and are not repeated.
- the present invention proposes a new improvement to the above prior art.
- the bisector Z--Z axis of the upper axial plate 103A and the lower plate 103B and the half-axis axial height of the coil 109A and the coil 109B are the same horizontal symmetry axis, thereby implementing the present invention Example can get the best magnetic circuit and coil circuit Up and down, left and right symmetry.
- Fig. 2 is a longitudinal sectional view showing a prior art embodiment 2 and a modification thereof.
- FIG. 5 This is a partial cross-sectional view of the magnetic core of the embodiment of Fig. 5 disclosed in PCT/CN2008/072668, which is hereby incorporated by reference.
- the upper plate 203A and the lower plate 203B are two circular plates of equal thickness and equal projection area, coaxially mounted, and a matching neodymium iron boron magnet 202 is bonded to the upper plate 203A and the lower plate 203B.
- the ring-shaped yoke 213 is placed on the axial center of the above-mentioned magnetic core.
- the outer peripheral surface of the element 21 3 and the vertical peripheral surfaces of the elements 203A and 203B constitute two coaxial equal diameters.
- Annular magnetic gaps 210A and 210B in which a line drawing skeleton 207 and coaxially mounted two line patterns 209A and 209B are inserted, a set line diagram 209A is clockwise winding, and a line ⁇ 209B is counterclockwise wound. To (and vice versa). It is specified that the cross-sectional area of the electromagnetic wire of the coil 209A and the coil 209B, the number of the wire pattern, the line width of the wire, the resistance of the wire, the absolute value of the inductance of the wire pattern, and the tension at the time of winding are equal to each other, and are connected in series to form a line graph. As shown in Fig.
- the upper plate 203A, the lower plate 203B and the 'half-axis axial bisector zonal Z--Z axis are formed as horizontal symmetry axes
- the bisector X--X axis of the one-half axial height of the permanent magnet 202 is a horizontal symmetry axis
- the y--Y center axis of the element 203A, the element 202, and the element 203B is a vertical symmetry axis.
- This embodiment is a set of dual magnetic gap double coil external magnetic transducer drivers with resistive load characteristics or approximately resistive load characteristics with ultra-high sensitivity and high fidelity.
- PCT/CN2008/ 072668 Figure 5 Figure 9 to Figure 12, Figure 20, Figure 21 and PCT/CN00/0024 US6795564, CN200610020317. 7 and other patent specifications, the present invention will not be repeatedly described.
- the present invention proposes a new improvement:
- the zonal Z--Z axis of the upper plate 103A and the lower plate 103B and the half-axis axial height of the coil 109A and the coil 109B are the same horizontal symmetry axis, so that the embodiment of the present invention can Obtain the best upper and lower symmetrical characteristics of the magnetic circuit and line graph circuit.
- Figure 3 shows a longitudinal section assembly view of prior art embodiment 3.
- the gist of the invention is that a gap 413 is provided between the magnet 42 and the vertical inner wall surface of the yoke 41 (i.e., the yoke), and two opposite holes 415 are formed in the vertical wall surface of the yoke 41.
- An additional gap 421 is formed between the yoke 41 and the hollow base 32.
- the air in the head space 443 is re-introduced into the gap 413 via the hammer 442 and the matching magnetic gap 432, and finally reaches the gap 421 through the air hole 415 and forms a convection heat dissipation inside the driver.
- the airway thereby achieving the purpose of the invention for Dr iver for A Horn Rad ia tor.
- the penetration holes are formed in the vertical inner wall of the yoke 41, when the diameters of the two holes are large, it is bound to increase.
- the magnetic resistance of the yoke 41 thereby reducing the Br value of the magnetic gap 432 where the voice coil 442 is located, will cause the output sound pressure of the horn speaker to drop.
- the diameter of the two holes is small, the influence on the Br value of the driver magnetic gap 432 is not large, and the ventilation and heat dissipation effect of the convection air passage of the invention is not obvious. Therefore, it fully demonstrates a very contradictory aspect of the US 5987148 patented airflow cooling solution.
- Fig. 4 is a longitudinal sectional assembly view showing a first embodiment of the present invention.
- Two wafer-shaped upper plates 303A1 and 303B1 which are coaxially mounted and provided with a central shaft hole, have the same thickness and projected area and are matched with NdFeB 302A.
- the axially magnetized permanent magnet 302A bonds the upper plate 303A1 and the lower plate 303B1 to an inner core of the magnetic circuit.
- An open cylindrical base 381 made of aluminum alloy has a circular platform 3118 at its axial center, and the circular platform has a neat and rough water platform surface 31180 and a neatly smooth vertical outer surface, in a vertical outer circular surface.
- the outer side of the annular groove 363 is provided with two or more uniformly arranged through holes 382, and the outer side of the annular groove 363 constitutes an open cylindrical wall of the base 381.
- the corresponding axial height of the circumferential surface is provided with a smooth and tidy horizontal positioning surface 3810 and a vertical positioning surface 3820.
- the cylindrical surface of the cylindrical barrel wall of the base 381 is also provided with a pluralit
- An adhesive is applied on the outer horizontal surface 3180 of the circular platform 3118, and the inner core that has been saturated by the magnetizing machine is bonded and positioned on the central axis of the circular platform surface 31180 by a special fixture.
- a non-magnetic flux fastener 3710 should be inserted into the shaft holes of the upper plate 303A1, the neodymium magnet 302A and the lower plate 303B1 immediately before the adhesive is solidified, while being embedded in the recessed hole 351 of the base.
- a non-magnetic nut 37101 is attached to the inner core to be fixed to the axial center of the circular land surface of the base 381.
- the two coaxially mounted annular upper plates 303A2 and 303B2 have the same thickness and projected area and are matched with the NdFeB 302B. It may be a ring-shaped neodymium magnet or a plurality of blocks. A thickly uniform axially magnetized neodymium magnet, thereby coupling the upper plate 303A2 and the lower plate 303B2 to form an outer core of the magnetic circuit. Then, after the inner core adhesive is sufficiently bonded and cured, the outer core is coaxially mounted to the outer periphery of the inner core by a special fixture. At this time, the lower plate 303B2 of the outer core is The annular deck surface 3810 of the open cylinder base 381 is horizontally positioned and bonded.
- the permanent magnet 302B of the outer core and the permanent magnet 302A of the inner core have opposite polarities in the axial height as shown in FIGS. 4 and 5: for example, the permanent magnet 302A near the upper plate 303A1 has an N pole.
- the permanent magnet 302B near the upper plate 303A2 has opposite S polarity.
- the upper core plate 303A1 of the inner core And the bisector Z--Z axis of the upper pole plate 303A2 of the outer core and the matching one-half axial height of the coil 309A is the same horizontal bisector or horizontal axis.
- the lower core plate 303B1 of the inner core and the lower plate 303B2 of the outer core and the bisector Z--Z axis of the one-half axial height of the coil 309B of the matching core are also the same horizontal aliquot Line or horizontal axis.
- the electromagnetic wire cross-sectional area, the number of coil patterns, the line graph web, the coil resistance, the absolute value of the line graph inductance, and the tension at the winding are defined to be equal to each other in the two line patterns 309A and 309B, and the inner core permanent magnet 302A and The bisector of the one-half axial height of the outer core permanent magnet 302B W --- W axis is a horizontal symmetry axis, and the inner axis of the inner core and the outer core is the vertical axis of symmetry.
- the double magnet double magnetic gap two-line diagram transducer driver has two sets of magnetic circuits which are bilaterally symmetric and vertically symmetrical in terms of geometric shape and magnetic properties, and two sets of coil circuits which are bilaterally symmetric and vertically symmetrical in terms of geometric shape and electrical performance. .
- the inductance of the two sets of coils of the double magnet double magnetic gap double coil driver and the back electromotive force induced during the reciprocating motion cancel each other by having a phase angle of 180 degrees, the double magnet double magnetic gap double line
- the loop transducer driver is a driver with electro-acoustic transducer or electromechanical transducer with resistance loading characteristics or resistance loading characteristics and super high efficiency and low distortion quality.
- This embodiment 1 provides a driver for a folding horn speaker.
- the maximum input sound power of this drive is often between 200W and 300W. Therefore, it is necessary to fully consider the way in which a large amount of thermal energy generated by the magnetic circuit and the coil circuit during operation is discharged from the inside of the transducer driver in time.
- the present invention requires: First, it is not allowed to add a magnetic fluid cooling coil in the annular magnetic gap; second, at the bottom of the groove of the annular groove facing the annular magnetic gap, when the base 381
- the geometrical dimensions and structural strengths are also provided with as many uniformly arranged through holes 382 as possible, and the projected areas of each of the air holes 382 are equal to each other; third, the center of the penetrating holes or The center lines are each disposed on a circumference line of the bobbin skeleton/or the projection plane of the coaxial equal-diameter coil.
- the diaphragm 306 vibrates up and down, the large amount of thermal energy generated by the transducer driver magnetic circuit and the coil circuit will pass through: the diaphragm sub-cavity - the annular magnetic gap 310 and the coil 309 -- the annular groove 363 - Through the air hole 382 --- the external space of the drive.
- the above technical solution of the invention not only improves the ventilation and heat dissipation effect of the transducer driver and the power pressure phenomenon of the speaker, but also improves the frequency transient response characteristic of the speaker, and makes the transducer vibration system up and down.
- the left and right symmetrical state of the coil circuit is always maintained during vibration, thereby significantly improving the distortion of the speaker.
- Fig. 5 is a longitudinal sectional view showing a separate element of the first embodiment of the present invention.
- Fig. 6 is a rear plan view showing Embodiment 1 of the present invention.
- the penetrating vent 382 is 28 uniformly arranged circular holes.
- the projected area of each hole is equal to each other.
- the center of each hole falls on a circumferential line equal to the outer diameter of the wire skeleton.
- Figure 7 shows a longitudinal section of a folding horn loudspeaker using a drive of the present invention.
- Fig. 8 is a longitudinal sectional assembly view showing a second embodiment of the present invention.
- Embodiment 1 of the present invention is a typical embodiment of a bass or subwoofer. It is also a modification of Embodiment 1 of the present invention, which is suitable for use with a large-caliber and high-power electroacoustic transducer.
- a screw hole or a penetration hole is provided in the axial center portion of the inner convex circular platform 3118 of the base 381.
- the inner core upper plate 303AK permanent magnet 302A and the lower plate 303B1 are each provided with a shaft hole.
- a non-magnetic material fastener such as The stainless steel bolt 3710 of the lCrl8Ni9Ti is inserted into the shaft hole of the inner core and is bonded and fastened to the axial center of the inner convex platform 3118.
- a non-magnetic material fastener such as The stainless steel bolt 3710 of the lCrl8Ni9Ti is inserted into the shaft hole of the inner core and is bonded and fastened to the axial center of the inner convex platform 3118.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN201110217920.5 | 2011-07-25 | ||
CN201110217920 | 2011-07-25 |
Publications (1)
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WO2013013502A1 true WO2013013502A1 (zh) | 2013-01-31 |
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ID=47577214
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/CN2012/000995 WO2013013502A1 (zh) | 2011-07-25 | 2012-07-25 | 双磁铁双磁隙双线圈换能器的驱动器 |
Country Status (3)
Country | Link |
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CN (1) | CN102905214B (zh) |
TW (1) | TW201309049A (zh) |
WO (1) | WO2013013502A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020134464A1 (zh) * | 2018-12-28 | 2020-07-02 | 瑞声声学科技(深圳)有限公司 | 发声器件 |
WO2021205295A1 (fr) | 2020-04-08 | 2021-10-14 | OLTRAMARE, Michel | Haut-parleur inductif a double flux magnetique axial |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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TWI573471B (zh) * | 2013-09-17 | 2017-03-01 | 美律實業股份有限公司 | 薄型揚聲器 |
DE102019201744B4 (de) * | 2018-12-04 | 2020-06-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Mems-schallwandler |
CN109936805A (zh) * | 2019-03-15 | 2019-06-25 | 斯贝克电子(嘉善)有限公司 | 一种全频扬声器的散热系统 |
CN111107468B (zh) * | 2019-12-18 | 2021-02-19 | 歌尔股份有限公司 | 一种发声装置以及电子终端 |
CN111131971B (zh) * | 2019-12-18 | 2021-07-23 | 歌尔股份有限公司 | 一种发声装置以及电子终端 |
CN113891222B (zh) * | 2021-10-15 | 2024-01-26 | 东莞市格雷特电子科技有限公司 | 一种串联磁路超薄型低音单元 |
CN114979911B (zh) * | 2022-07-29 | 2023-03-14 | 歌尔股份有限公司 | 发声装置和电子设备 |
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- 2012-07-25 TW TW101126763A patent/TW201309049A/zh unknown
- 2012-07-25 CN CN201210268329.7A patent/CN102905214B/zh not_active Expired - Fee Related
- 2012-07-25 WO PCT/CN2012/000995 patent/WO2013013502A1/zh active Application Filing
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JPH06233380A (ja) * | 1993-01-29 | 1994-08-19 | Sony Corp | スピーカ装置 |
JPH06269076A (ja) * | 1993-03-16 | 1994-09-22 | Sanyo Electric Co Ltd | 同軸型スピーカ |
CN2230070Y (zh) * | 1994-11-23 | 1996-06-26 | 陈正宗 | 一种双音圈双磁场双推挽扬声器 |
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WO2020134464A1 (zh) * | 2018-12-28 | 2020-07-02 | 瑞声声学科技(深圳)有限公司 | 发声器件 |
WO2021205295A1 (fr) | 2020-04-08 | 2021-10-14 | OLTRAMARE, Michel | Haut-parleur inductif a double flux magnetique axial |
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CN102905214A (zh) | 2013-01-30 |
TW201309049A (zh) | 2013-02-16 |
CN102905214B (zh) | 2018-06-01 |
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