WO2017183098A1 - スピーカー装置、及びスピーカー装置の音質改善方法 - Google Patents
スピーカー装置、及びスピーカー装置の音質改善方法 Download PDFInfo
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- WO2017183098A1 WO2017183098A1 PCT/JP2016/062328 JP2016062328W WO2017183098A1 WO 2017183098 A1 WO2017183098 A1 WO 2017183098A1 JP 2016062328 W JP2016062328 W JP 2016062328W WO 2017183098 A1 WO2017183098 A1 WO 2017183098A1
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- Prior art keywords
- speaker device
- yoke
- magnet
- voice coil
- magnetic circuit
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000006872 improvement Effects 0.000 title abstract description 3
- 239000004020 conductor Substances 0.000 claims abstract description 51
- 238000009413 insulation Methods 0.000 claims abstract description 29
- 230000002093 peripheral effect Effects 0.000 claims description 30
- 238000004804 winding Methods 0.000 claims description 9
- 230000004044 response Effects 0.000 abstract description 8
- 239000011248 coating agent Substances 0.000 description 33
- 238000000576 coating method Methods 0.000 description 33
- 238000005259 measurement Methods 0.000 description 20
- 230000000694 effects Effects 0.000 description 7
- 239000000696 magnetic material Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 230000004043 responsiveness Effects 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
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Classifications
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- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits
-
- 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
-
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/046—Construction
-
- 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
- H04R2209/021—Reduction of eddy currents in the magnetic circuit of electrodynamic loudspeaker transducer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
-
- 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
- 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
-
- 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 present invention relates to a speaker device and a sound quality improving method for the speaker device. More specifically, the present invention relates to a speaker device that can suppress the generation of eddy currents generated when a voice coil is operated and improve sound quality, and a sound quality improving method for the speaker device.
- Speaker devices are widely used in home audio equipment, in-vehicle audio equipment, and the like, and are also widely used in mobile terminals such as personal computers and mobile phones. In recent years, attention has been focused on high resolution sound sources that contain sound information in frequencies outside the audible range that cannot be heard by human ears, and speaker devices that support these high resolution sound sources have been actively developed. Yes.
- Such a speaker device generally includes a magnetic circuit such as a yoke, a magnet, a plate, and a center pole, and a vibrating body such as a voice coil, a diaphragm, and a frame.
- a magnetic circuit such as a yoke, a magnet, a plate, and a center pole
- a vibrating body such as a voice coil, a diaphragm, and a frame.
- the voice coil vibrates due to a change in the current flowing in the voice coil in the magnetic field created by the magnet, and the diaphragm connected to the voice coil vibrates, thereby generating sound waves. It radiates to the outside.
- a conductive material such as iron having high permeability is mainly used for the magnetic circuit constituting the speaker device. For this reason, it is known that when a current flows through the voice coil, an alternating magnetic field crosses the magnetic circuit due to the magnetic field generated from the voice coil, and an eddy current is generated in a direction that prevents the change.
- Patent Document 1 In order to reduce such eddy currents that cause deterioration in sound quality of the speaker device, for example, in Patent Document 1, at least a portion of a yoke that constitutes a magnetic circuit is made of an iron powder bond, and eddy currents are reduced. Techniques for reducing the occurrence have been proposed.
- a magnetic gap 313 is formed by the inner peripheral surface of the magnet 305 and the outer peripheral surface of the yoke 304, and a voice coil 319 is inserted into the magnetic gap 313 to A portion facing the gap 313 is constituted by an iron powder bond 321.
- the iron powder bond 321 has a higher volume resistivity and higher electric resistance than ordinary iron, the electric resistance around the voice coil 319 can be made relatively higher than other parts. . Therefore, the eddy current generated in the periphery of the voice coil 319 can be suppressed as much as possible, the responsiveness of the voice coil 319 to the electric signal is improved, and the sound quality of the speaker device is improved.
- Patent Document 2 discloses a technique for suppressing the generation of eddy current by not arranging a center pole which is considered to be an eddy current generation factor and is disposed on the inner peripheral side of a bobbin around which a voice coil is wound. It is disclosed.
- ring-shaped plates 403a and 403b made of a magnetic material through a minute gap on the outer peripheral side of a voice coil 419 wound around a bobbin 418 made of a non-magnetic material.
- the ring-shaped magnet 405 is also disposed between the plates 403a and 403b.
- the magnet 405 has an inner diameter equal to that of the plates 403a and 403b, but has an outer diameter larger than that of the plates 403a and 403b.
- the amount of magnetic flux that crosses the air gap can be increased, so that sufficient magnetic flux can be passed through the voice coil 419 even when there is no center pole, and eddy currents that are generated by the presence of the center pole are suppressed. It is possible to do.
- the iron powder bond is mixed with iron powder with an epoxy resin, a curing agent, and the remaining organic solvent, and after removing the organic solvent in a vacuum drying furnace, the iron powder bond is compressed into a predetermined shape.
- the yoke is then processed into a yoke through a process of electrodeposition-coating an epoxy resin heat-cured.
- the present invention has been devised in view of the above points, and provides a speaker device capable of suppressing the generation of eddy currents generated when a voice coil is operated and improving the sound quality, and a sound quality improving method for the speaker device. For the purpose.
- the speaker device of the present invention has a substantially circular opening formed in the center, a frame that expands toward one side, an outer peripheral edge attached to the frame, and a center.
- a substantially circular opening having a substantially circular opening formed in a portion thereof and expanding toward one surface; a substantially cylindrical voice coil bobbin having one axial end attached to the vibration plate; and the voice A voice coil wound around the outer peripheral surface of the coil bobbin, a substantially circular opening formed in the center, and a ring-shaped plate attached to the periphery of the opening of the frame;
- An opening is formed, and includes a magnet having a pole face on both end faces in the axial direction, and an insulation-coated conductive wire wound around a part of the outer peripheral surface of the
- (+) potential and (-) potential mixed on the magnet surface can be confined in the insulating film conductor.
- the (+) potential and the ( ⁇ ) potential mixed on the yoke surface can be confined in the insulating coating conductor.
- the (+) potential and ( ⁇ ) potential mixed on the center pole are confined in the insulation coating conductor. be able to.
- the (+) potential and ( ⁇ ) potential mixed on the plate can be confined in the insulation coating.
- a speaker device includes a vibrating body constituent part constituting a vibrating body including at least a voice coil, a diaphragm and a frame, and a magnetic circuit including at least a yoke, a magnet, a center pole and a plate. And at least one of the magnetic circuit components is wound around the outer peripheral surface of the magnetic circuit component, and an insulation-coated conductive wire having one end connected to the other end.
- any of the yoke, the magnet, the center pole, and the plate is provided by including the insulating film conductor wound around the outer peripheral surface of at least one of the magnetic circuit components including the yoke, the magnet, the center pole, and the plate.
- the (+) potential and (-) potential mixed on the surface of the part can be confined in the insulating film conductor.
- (+) potential existing in the insulating film conductor wound around any one of the magnetic components including the yoke, the magnet, the center pole, and the plate Since current flows from ( ⁇ ) potential to the same potential, eddy current can be eliminated instantaneously. Therefore, current distortion due to eddy current can be corrected, the response of the voice coil can be improved, and the sound quality of the speaker device can be improved.
- a sound quality improving method for a speaker device is provided on the outer peripheral surface of at least one magnetic circuit component constituting a magnetic circuit composed of at least a yoke, a magnet, a center pole, and a plate.
- the method includes a step of winding an insulating coated conductor, and a step of connecting one end and the other end of the insulating coated conductor.
- the yoke, magnet center pole, and plate
- the yoke, magnet center
- the (+) potential and ( ⁇ ) potential mixed on the surface of any part of the pole can be confined in the insulating film conductor.
- the insulation coating conductor is present in the insulation coating conductor wound around any one of the magnetic circuit components including the yoke, the magnet, the center pole, and the plate. Since the current flows from the (+) potential to the ( ⁇ ) potential and becomes the same potential, the eddy current can be eliminated instantaneously. Therefore, current distortion due to eddy current can be corrected, the response of the voice coil can be improved, and the sound quality of the speaker device can be improved.
- the speaker device and the sound quality improving method of the speaker device according to the present invention can suppress the generation of eddy current generated when the voice coil is operated and improve the sound quality.
- FIG. 1 is an external perspective view of a speaker device according to an embodiment of the present invention. It is a graph which shows the electric signal (voltage) input in the case of voltage measurement. It is a graph which shows the measurement result of an electric signal at the time of winding an insulating-film lead wire around the perimeter of a magnet. It is a graph which shows the measurement result of the electric signal at the time of winding an insulating-film conductor wire on the outer periphery of a magnet, and a yoke. It is sectional drawing of the speaker apparatus which concerns on the 2nd Embodiment of this invention. It is a figure which shows a prior art. It is a figure which shows a prior art.
- the speaker device 101 outputs sound data from a playback device (not shown) by sound generation, and is mainly composed of a frame 102, a plate 103, a yoke 104, a magnet 105, a diaphragm 106, and a voice coil bobbin 117.
- a playback device not shown
- Type dynamic speaker Type dynamic speaker.
- the frame 102 is formed with a circular opening 107 at a substantially central portion of the bottom surface, and has a cylindrical frame bottom 108 that opens toward one side. On the outer peripheral edge of the frame bottom portion 108, radial bridging portions 109 are provided so as to expand from each other on the distal end side.
- An input terminal 110 to which audio data as an electrical signal is input is attached to the frame 102.
- the frame 102 is integrally provided with a plate 103 and a yoke 104 that constitute a magnetic circuit.
- the plate 103 is formed, for example, in a substantially ring shape from a magnetic material, and is attached to the bottom surface of the frame 102 by known attachment means such as an adhesive.
- the yoke 104 is made of, for example, a magnetic material, like the plate 103, and a substantially cylindrical center pole 112 is integrally formed on one side of the yoke bottom 111 on a substantially circular plate and the substantially center portion of the yoke bottom 111. ing.
- a magnetic gap 113 that is a predetermined gap is formed between the outer periphery of the center pole 112 and the inner periphery of the plate 103.
- the center pole 112 does not necessarily have to be formed integrally with the yoke bottom 111.
- the yoke bottom 111 and the center pole 112 may be configured separately, and may be attached to a substantially central portion of the yoke bottom 111 by a known attachment means such as an adhesive.
- the magnet 105 is a ferrite magnet having a substantially ring shape and having N and S magnetic poles formed on both end faces in the axial direction.
- the magnet 105 is sandwiched between the plate 103 and the yoke bottom 111 and is attached by a known attachment means such as an adhesive in a state of penetrating the center pole 112.
- a known attachment means such as an adhesive in a state of penetrating the center pole 112.
- the outer peripheral surface of the center pole 112 and the inner peripheral surface of the plate 103 face each other with different magnetic poles, and a magnetic circuit is configured together with the magnet 105.
- the magnet 105 does not necessarily need to be a ferrite magnet.
- an alnico magnet, a neodymium magnet, or the like can be employed instead of the ferrite magnet.
- the diaphragm 106 is made of paper and has a cone-shaped vibrating portion 114 that expands toward one side.
- An edge portion 115 is provided on the outer peripheral edge of the vibration portion 114, and the outer peripheral edge of the edge portion 115 is attached to the frame 102 via an attachment member 116.
- the diaphragm 106 does not necessarily have a cone shape.
- various shapes such as a dome shape and a planar shape can be adopted depending on the application.
- the diaphragm 106 does not necessarily need to be made of paper.
- various materials such as metal and resin can be adopted depending on the application.
- a voice coil bobbin 117 is integrally provided on the diaphragm 106.
- the voice coil bobbin 117 is wound with a substantially cylindrical bobbin 118 and a voice coil 119 in which an insulating layer is formed on the surface of a copper wire on the outer peripheral surface on one end side in the axial direction of the bobbin 118.
- a driving force acts on the voice coil 119 within the magnetic gap 113 based on Fleming's left-hand rule, and the diaphragm 116. Is oscillated in the axial direction of the speaker device 101 to emit sound waves. Further, the plate 103, the magnet 105, the yoke 104, and the center pole 112 constituting the magnetic circuit are constantly mixed with (+) potential or ( ⁇ ) potential. The vibration of the voice coil 119 causes a magnetic fluctuation, and the (+) potential or ( ⁇ ) potential existing on the magnetic circuit flows through the magnetic circuit as an eddy current. At this time, based on Fleming's law, a force acts in a direction that obstructs the vibration direction of the diaphragm 116, that is, a direction perpendicular to the axial direction of the speaker device 101.
- the insulating coated conductor 120 which is a magnet wire coated with an insulating material, is wound around the outer periphery in the axial direction of the magnet 105 constituting the magnetic circuit.
- the insulating film conductive wire 120 has a diameter of 0.8 cm and a winding number N of 70.
- the insulating coating conductor 120 does not necessarily have to be wound around the outer periphery of the magnet 105 in the axial direction. It may be wound around any part constituting the magnetic circuit, for example, any one or all of the center pole 112, the yoke 104, and the plate 103. However, since more (+) potential and ( ⁇ ) potential are mixed on the magnet 105 having the strongest magnetism, more (+) potential can be obtained by winding the insulating coating wire 120 around the outer periphery of the magnet 105. Since the (+) potential and the ( ⁇ ) potential can be confined in the insulating film conductor 120, the effect of eliminating the eddy current is also enhanced.
- the number of turns of the insulating coating conductor 120 is not necessarily 70.
- 50 times and 100 times can be appropriately changed according to the size of the target component to be wound.
- the larger the number of turns N the larger the surface area of the insulating film conductor 120, and more (+) and ( ⁇ ) potentials can be confined in the insulating film conductor 120, so that the eddy current disappearance effect Will also increase.
- the one end and the other end of the insulating coating conductive wire 120 are not coated with an insulating material and are in a state where the conducting wire is exposed, and the one end and the other end are electrically connected by, for example, soldering or the like. In this way, by connecting one end and the other end of the insulating film conductive wire 120, the (+) potential and the ( ⁇ ) potential existing in the insulating film conductive wire 120 are instantaneously equalized to eliminate the eddy current. be able to.
- an oscilloscope was used to measure the current value when one end and the other end of the insulating coating wire 120 were connected and released in the above-described embodiment.
- the speaker apparatus used for the measurement, test conditions, etc. are as follows.
- a measurement insulating coating wire (not shown) is wound around the outer periphery of the insulating coating wire 120, and one end and the other end of the measurement insulating coating wire are connected to the input terminal of the oscilloscope. The current flowing through the insulating coating wire 120 was measured.
- FIG. 4A shows a current waveform flowing through the outer periphery of the magnet 105.
- the current waveform which flows through the measurement object part (outer periphery of the magnet 105) at the time of connecting the one end and the other end of the insulating film conducting wire 120 is shown in FIG. 4 (a) and 4 (b) are obtained by voltage-converting the current waveform flowing through the measurement target site with the application of the measurement voltage, and the sweep time is 2 ms / div.
- the sum of the (+) potential and the ( ⁇ ) potential existing in the insulating film conductor 120 is the total voltage.
- eddy current is generated in response to the fluctuation of the magnetic field accompanying the driving of the voice coil 119.
- the measured maximum current is a large value.
- FIG. 5 shows a region to be measured when the measurement AC voltage shown in FIG. 3 is input to the voice coil 119 when the insulating coating wire 120 is wound around each of the outer periphery of the magnet 105 and the outer periphery of the yoke 104. It is the measurement result of the current value with the oscilloscope.
- FIG. 5A shows the connection of one end of the insulating film conductor 120 wound around the magnet 105 and the other end of the insulating film conductor 120 wound around the yoke 104, and the insulation film conductor 120 wound around the magnet 105.
- part at the time of joining the other end and the end of the insulating film conducting wire 120 wound around the yoke 104 is shown.
- FIG. 5B shows a measurement target site when one end and the other end of the insulating coating wire 120 wound around the magnet 105 are joined and one end and the other end of the insulating coating wire 120 wound around the yoke 104 are joined.
- the current waveform which flows through is shown. Similar to FIG. 4, the measurement result is a voltage conversion of the waveform of the current flowing through the measurement target site as the measurement voltage is applied, and the sweep time is 200 ⁇ s / div.
- the insulating film conductor 120 is wound around the yoke 104, so that the measured maximum current becomes a smaller value compared to FIG. It can be confirmed that the effect of extinguishing the eddy current appears remarkably.
- the insulating film conducting wire 120 is wound around the outer periphery of the magnet 105, which is one of the components constituting the magnetic circuit, so that the (+) potential and the (-) potential on the surface of the magnet 105 are insulated.
- the (+) potential and the ( ⁇ ) potential existing in the insulating coating conductive wire 120 can be instantaneously equalized by connecting one end and the other end of the wound insulating coating conductive wire 120. As a result, generation of eddy current can be suppressed.
- the present invention is applied to an internal magnet type speaker device 201. That is, in the speaker device 201 in the second embodiment, a magnet 205 is attached to the vicinity of the center of the bottom of the yoke 204, and a center pole is provided on a surface opposite to the attachment surface of the magnet 205 to the bottom of the yoke 204. 212 is installed.
- the plate 203 is installed on the end face of the yoke 204 with a certain gap from the center pole 212.
- the yoke 204, the center pole 212, and the plate 203 are made of a magnetic material and constitute a magnetic circuit together with the magnet 205.
- the insulating film conductive wire 220 is wound around a part of the outer periphery of the yoke 204 that constitutes the magnetic circuit.
- the (+) potential and the ( ⁇ ) potential mixed on the surface of 204 can be confined in the insulating film conductor 220.
- the distortion of the current due to the eddy current can be corrected, the responsiveness of the voice coil 219 can be improved, and the sound quality of the speaker device 201 can be improved.
- the insulating coating conductor 220 does not necessarily have to be wound only around the outer periphery of the yoke 204. As long as it is a component that constitutes a magnetic circuit, it may be wound around any or all of the magnet 205, the center pole 212, and the plate 203, for example, as in the first embodiment.
- the speaker device and the sound quality improvement method of the speaker device to which the present invention is applied can suppress the generation of eddy currents generated when the voice coil is operated and improve the sound quality.
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Abstract
Description
略円盤状のヨークと、該ヨークの略中央部の一面側に突出した略円筒状のセンターポールと、前記プレートと前記ヨークに挟持されるとともに、中央部に前記センターポールが挿通する略円形の開口部が形成され、軸方向の両端面に磁極面を有する磁石と、前記磁石の外周面の一部に巻装されるとともに、一端と他端が接続された絶縁被覆導線とを備えている。
(スピーカー装置の仕様)
メーカー名:SIEMENS
型式:C98233-A9803-A1
全体域用:25cm同軸型ユニット
低域用:25cmコーン型
高域用:9cmコーン型
インピーダンス:15Ω
周波数特性:60Hz~16kHz
能率:98dB/1W
(計測場所)
福岡県工業技術センター機械電子研究所(福岡県北九州市八幡西区則松3-6-1)
(試験条件)
絶縁被膜導線120の巻数(N):70回
絶縁被膜導線120の巻装位置:磁石105の外周
102 フレーム
103、203、403a、403b プレート
104、204、304 ヨーク
105、205、305、405 磁石
106 振動板
107 開口部
108 フレーム底部
109 架橋部
110 入力端子
111 ヨーク底部
112、212 センターポール
113、313 磁気ギャップ
114 振動部
115 エッジ部
116 取付部材
117 ボイスコイルボビン
118、418 ボビン
119、219、319、419 ボイスコイル
120、220 絶縁被膜導線
321 鉄粉ボンド
Claims (6)
- 中央部に略円形の開口部が形成され、一面側に向けて拡開するフレームと、
外周縁が前記フレームに取り付けられるとともに、中央部に略円形の開口部が形成され、一面側に向けて拡開する略円錐台状の振動板と、
軸方向の一端側が前記振動板に取り付けられた略円筒状のボイスコイルボビンと、
該ボイスコイルボビンの外周面に巻装されるボイスコイルと、
中央部に略円形の開口部が形成され、前記フレームの前記開口部の周縁に取り付けられたリング状のプレートと、
略円盤状のヨークと、
該ヨークの略中央部の一面側に突出した略円筒状のセンターポールと、
前記プレートと前記ヨークに挟持されるとともに、中央部に前記センターポールが挿通する略円形の開口部が形成され、軸方向の両端面に磁極面を有する磁石と、
前記磁石の外周面の一部に巻装されるとともに、一端と他端が接続された絶縁被覆導線と、を備える
スピーカー装置。 - 前記絶縁被覆導線は、
前記ヨークの外周面の一部に巻装されるとともに、一端と他端が接続された
請求項1に記載のスピーカー装置。 - 前記絶縁被覆導線は、
前記センターポールの軸方向における外周面の一部に巻装されるとともに、一端と他端が接続された
請求項1又は請求項2に記載のスピーカー装置。 - 前記絶縁被覆導線は、
前記プレートの外周面の一部に巻装されるとともに、一端と他端が接続された
請求項1から請求項3の何れか一項に記載のスピーカー装置。 - 少なくともボイスコイル、振動板、フレームからなる振動体を構成する振動体構成部品と、
少なくともヨーク、磁石、センターポール、プレートからなる磁気回路を構成する磁気回路構成部品と、
該磁気回路構成部品の少なくとも1つの部品の外周面に巻装されるとともに、一端と他端が接続された絶縁被覆導線と、を備える
スピーカー装置。 - 少なくともヨーク、磁石、センターポール、プレートからなる磁気回路を構成する磁気回路構成部品の少なくとも1つの部品の外周面に、絶縁被覆導線を巻装する工程と、
前記絶縁被覆導線の一端と他端を接続する工程と、を備える
スピーカー装置の音質改善方法。
Priority Applications (8)
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PCT/JP2016/062328 WO2017183098A1 (ja) | 2016-04-19 | 2016-04-19 | スピーカー装置、及びスピーカー装置の音質改善方法 |
DK16899372.3T DK3448060T3 (da) | 2016-04-19 | 2016-04-19 | Højtalerindretning, og fremgangsmåde til lydkvalitetsforbedring af højtalerindretning |
EP16899372.3A EP3448060B1 (en) | 2016-04-19 | 2016-04-19 | Speaker device, and speaker device sound quality improvement method |
CN201680018371.XA CN107534814B (zh) | 2016-04-19 | 2016-04-19 | 扬声器装置、以及扬声器装置的音质改善方法 |
KR1020177027568A KR101915736B1 (ko) | 2016-04-19 | 2016-04-19 | 스피커 장치 및 스피커 장치의 음질 개선 방법 |
JP2017531416A JP6188046B1 (ja) | 2016-04-19 | 2016-04-19 | スピーカー装置、及びスピーカー装置の音質改善方法 |
US15/563,486 US10631095B2 (en) | 2016-04-19 | 2016-04-19 | Speaker device, and method for improving sound quality of speaker device |
TW106109195A TWI643503B (zh) | 2016-04-19 | 2017-03-20 | 揚聲器裝置及揚聲器裝置之音質改善方法 |
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PCT/JP2016/062328 WO2017183098A1 (ja) | 2016-04-19 | 2016-04-19 | スピーカー装置、及びスピーカー装置の音質改善方法 |
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US (1) | US10631095B2 (ja) |
EP (1) | EP3448060B1 (ja) |
JP (1) | JP6188046B1 (ja) |
KR (1) | KR101915736B1 (ja) |
CN (1) | CN107534814B (ja) |
DK (1) | DK3448060T3 (ja) |
TW (1) | TWI643503B (ja) |
WO (1) | WO2017183098A1 (ja) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0583794A (ja) * | 1991-09-25 | 1993-04-02 | Matsushita Electric Ind Co Ltd | スピーカ |
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GB944927A (en) * | 1960-05-10 | 1963-12-18 | James Elra Hatch | Improvements in or relating to electro-acoustic transducers |
JPS51151122A (en) * | 1975-06-19 | 1976-12-25 | Sansui Electric Co | Speaker unit |
JPS5712640Y2 (ja) * | 1976-12-14 | 1982-03-12 | ||
JPS5384345A (en) * | 1976-12-30 | 1978-07-25 | Takasago Thermal Eng Co Lts | Heat source apparatus for circulationg water |
GB1600689A (en) * | 1977-03-01 | 1981-10-21 | Seas Fabrikker As | Loudspeaker |
JPS53142217A (en) | 1977-05-18 | 1978-12-11 | Nippon Onkiyou Denki Kk | Permanent magnet loudspaker with magnetic bypass |
GB2010639B (en) * | 1977-12-14 | 1982-05-19 | Matsushita Electric Ind Co Ltd | Transducer |
JPS5582897U (ja) * | 1978-11-30 | 1980-06-07 | ||
JPS5582897A (en) | 1978-12-18 | 1980-06-21 | Taiji Sugimoto | Adiabatic material supporting sturucture of side bulkhead in dual-shell reservoir |
US5815587A (en) * | 1993-05-10 | 1998-09-29 | Scan-Speak A/S | Loudspeaker with short circuit rings at the voice coil |
JPH0823593A (ja) * | 1994-07-07 | 1996-01-23 | Sony Corp | スピーカ装置 |
JP3258535B2 (ja) | 1995-08-08 | 2002-02-18 | 日立金属株式会社 | スピーカ用磁気回路 |
TW280981B (en) * | 1996-03-06 | 1996-07-11 | Ind Tech Res Inst | Speaker and its magnetic-circuit construction |
JPH11122694A (ja) | 1997-10-15 | 1999-04-30 | Alpine Electron Inc | スピーカ |
JP2006060333A (ja) | 2004-08-17 | 2006-03-02 | Pioneer Electronic Corp | スピーカ用磁気回路及びスピーカ装置 |
US7940950B2 (en) * | 2005-10-03 | 2011-05-10 | Youngtack Shim | Electromagnetically-shielded speaker systems and methods |
JP2007174604A (ja) * | 2005-12-26 | 2007-07-05 | Pioneer Electronic Corp | スピーカ装置 |
CN200956660Y (zh) * | 2006-06-30 | 2007-10-03 | 常州美欧电子有限公司 | 带短路结构的扬声器 |
JP5290284B2 (ja) * | 2008-05-21 | 2013-09-18 | ジーナスオーディオ株式会社 | スピーカ |
CN102387450A (zh) * | 2010-08-31 | 2012-03-21 | 张凡 | 双磁隙双线圈外磁式换能器及其制备方法 |
KR102185410B1 (ko) * | 2014-06-13 | 2020-12-01 | 삼성전자주식회사 | 스피커 유닛 |
CN104320745B (zh) * | 2014-10-24 | 2018-06-05 | 歌尔股份有限公司 | 扬声器 |
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JPH0583794A (ja) * | 1991-09-25 | 1993-04-02 | Matsushita Electric Ind Co Ltd | スピーカ |
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CN107534814B (zh) | 2020-09-08 |
TW201739271A (zh) | 2017-11-01 |
EP3448060A1 (en) | 2019-02-27 |
US20180343523A1 (en) | 2018-11-29 |
EP3448060A4 (en) | 2019-12-18 |
CN107534814A (zh) | 2018-01-02 |
JPWO2017183098A1 (ja) | 2018-04-26 |
JP6188046B1 (ja) | 2017-08-30 |
EP3448060B1 (en) | 2023-08-30 |
KR101915736B1 (ko) | 2018-11-06 |
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KR20170141654A (ko) | 2017-12-26 |
DK3448060T3 (da) | 2023-10-09 |
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