CN113949972A - Intelligent adjustment flat earphone - Google Patents

Intelligent adjustment flat earphone Download PDF

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Publication number
CN113949972A
CN113949972A CN202111159687.XA CN202111159687A CN113949972A CN 113949972 A CN113949972 A CN 113949972A CN 202111159687 A CN202111159687 A CN 202111159687A CN 113949972 A CN113949972 A CN 113949972A
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CN
China
Prior art keywords
coils
conductive
diaphragm
turned
smart tablet
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Granted
Application number
CN202111159687.XA
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Chinese (zh)
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CN113949972B (en
Inventor
边仿
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Head Direct Kunshan Co ltd
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Head Direct Kunshan Co ltd
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Priority to CN202111159687.XA priority Critical patent/CN113949972B/en
Publication of CN113949972A publication Critical patent/CN113949972A/en
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Publication of CN113949972B publication Critical patent/CN113949972B/en
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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
    • 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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1091—Details not provided for in groups H04R1/1008 - H04R1/1083
    • 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
    • H04R9/02—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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
    • 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
    • H04R2209/024—Manufacturing aspects of the magnetic circuit of loudspeaker or microphone transducers

Abstract

The invention provides an intelligent adjustment flat-panel earphone which comprises an electromagnetic transducer; the electromagnetic transducer includes: the vibration isolator comprises an outer shell, a permanent magnet plate, a vibration film and a fixing component, wherein the vibration film is arranged opposite to the permanent magnet plate; the diaphragm main body is of a flexible resin film structure, a plurality of groups of coils are arranged on the resin film structure, patterns formed by the coils are concentric rings, the concentric rings formed by different groups of coils are different in size, and input electric signals of the concentric rings can be controlled respectively; the vibration characteristic of the diaphragm can be controlled according to the characteristics of the audio signal, and the restoring degree and the expression of high and low audio frequencies are increased.

Description

Intelligent adjustment flat earphone
Technical Field
The invention relates to the field of audio output equipment, in particular to an intelligent adjustment flat-panel earphone.
Background
A planar electromagnetic transducer consisting of a combination of a permanent magnet assembly and a diaphragm is known in the art for flat-panel earphones. An electromagnetic transducer of this type generally includes a permanent magnet assembly, a diaphragm disposed opposite the permanent magnet assembly, and a support member for fixing the diaphragm to the permanent magnet assembly at a peripheral region of the permanent magnet assembly.
The permanent magnet assembly used in this type of conventional electromagnetic transducer has a plurality of elongated permanent magnets each having two opposite magnetic poles on surfaces on both sides thereof, the magnets being arranged in parallel relation such that N poles and S poles are alternately and firmly joined together by a non-magnetic member. The diaphragm is a thin resin film on the surface of which a coil is formed in an "S" or "loop" shaped pattern. The diaphragm is combined with the permanent magnet assembly such that the straight portions of the coil pattern are located exactly on the central area between the elongated permanent magnets arranged in parallel. In practice, the diaphragm is fixed to the permanent magnet assembly in the peripheral region of the permanent magnet assembly by means of one or more spacers.
The magnetic lines of force extend between the poles of two adjacent elongated permanent magnets and generate a magnetic field transverse to the linear portion of the conductor pattern of the diaphragm. When the coil of the diaphragm is energized, an electromagnetic force is generated according to the left-hand rule of Fleming, and the diaphragm is displaced in its thickness direction. According to this rule, vibration corresponding to a drive current to the coil is generated to generate an acoustic wave. The sound waves pass through the elongated permanent magnet, radiating outward.
The traditional coils are generally single or parallel, and are uniformly distributed on the vibrating diaphragm, so that the form is single, and the vibration of the vibrating diaphragm is difficult to highlight the characteristics of audio signals, namely, the reduction degree and the expression of audio cannot be increased.
Disclosure of Invention
In view of the above-mentioned shortcomings in the prior art, the present invention provides an intelligent tuning flat-panel earphone comprising an electromagnetic transducer; the electromagnetic transducer includes: the vibration isolator comprises an outer shell, a permanent magnet plate, a vibration film and a fixing component, wherein the vibration film is arranged opposite to the permanent magnet plate;
the permanent magnet plate is of a rigid plate-shaped structure and comprises a base body and strip-shaped magnetic poles; the substrate is provided with strip-shaped magnetic poles with NS poles arranged in parallel and alternately appearing, and a plurality of uniformly distributed exhaust through holes are arranged in the substrate and in a neutral zone between the strip-shaped magnetic poles;
the diaphragm main body is of a flexible resin film structure, a plurality of groups of coils are arranged on the resin film structure, patterns formed by the coils are concentric rings, the concentric rings formed by different groups of coils are different in size, and input electric signals of the concentric rings can be controlled respectively.
Preferably, the concentric rings of coils are equally spaced from one another in the circumferential direction.
Preferably, when the high and low tones of the input electric signal are different, a part of the plurality of sets of coils is controlled to be turned on so that the distribution density of the turned-on coils on the outer side in the ring center toward the ring outer peripheral direction is different from the distribution density of the turned-on coils on the inner side.
Preferably, when the input electric signal is a bass signal, controlling a part of the plurality of groups of coils to be turned on so that the distribution of the turned-on coils along the center of the ring toward the outer side of the outer circumferential direction of the ring is denser than the distribution of the turned-on coils at the inner side; when the input electric signal is a high-pitch signal, controlling a part of the coils in the plurality of groups to be switched on so that the distribution of the switched-on coils along the center of the ring towards the inner side of the outer circumference of the ring is denser than that of the switched-on coils at the outer side.
Preferably, the plurality of sets of coils are provided on both upper and lower surfaces of the resin film structure.
Preferably, a circle of elastic member is arranged on the outer peripheral surface of the resin film structure, and the elastic member is provided with a plurality of conductive sections and a plurality of insulating sections along the circumferential direction; and each two conductive sections are correspondingly and electrically connected with two ends of each group of coils and used for applying electric signals to the coils.
Preferably, the elastic member is a fabric tape.
Preferably, the fabric tape is composed of at least a base layer and an active layer bonded in a stacked manner to obtain a predetermined thickness, the active layer is provided with the plurality of conductive sections and the plurality of insulating sections alternately in the circumferential direction, and the base layer is woven by insulating material threads.
Preferably, the conductive section is woven from conductive material threads and the insulating section is woven from insulating material threads.
Preferably, the conductive section and the insulating section are both woven by insulating material threads, and the conductive section is coated with a conductive material after being woven.
Preferably, terminal pins are embedded and electrically connected in the conductive sections.
Preferably, an intermediate layer is further included between the base layer and the action layer, and at least two conductive segments are arranged at intervals along the circumferential direction of the intermediate layer through insulating segments.
Preferably, a first one of the conductive segments is bonded to a plurality of conductive segments by a conductive adhesive, and when an input electrical signal is a bass signal, a coil connected to the plurality of conductive segments is turned on; a second one of the conductive segments is bonded to a plurality of conductive segments by a conductive adhesive, and when an input electric signal is a high-pitched signal, a coil connected to the plurality of conductive segments is turned on.
Preferably, terminal pins are embedded and electrically connected in the first conductive segment and the second conductive segment.
Preferably, a peripheral region of the diaphragm is fixed by the fixing member so that the diaphragm is restricted from being displaced in a planar direction, but the diaphragm may be displaced in a thickness direction; the fixing member is in a hoop type and is used for fixing the diaphragm from the periphery of the diaphragm.
The invention provides an intelligent adjustment flat-panel earphone which comprises an electromagnetic transducer; the electromagnetic transducer includes: the vibration isolator comprises an outer shell, a permanent magnet plate, a vibration film and a fixing component, wherein the vibration film is arranged opposite to the permanent magnet plate; the diaphragm main body is of a flexible resin film structure, a plurality of groups of coils are arranged on the resin film structure, patterns formed by the coils are concentric rings, the concentric rings formed by different groups of coils are different in size, and input electric signals of the concentric rings can be controlled respectively; the vibration characteristic of the diaphragm can be controlled according to the characteristics of the audio signal, and the restoring degree and the expression of high and low audio frequencies are increased.
Drawings
Fig. 1 is a schematic diagram of an electromagnetic transducer of an intelligent adjustment flat-panel earphone according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a diaphragm structure of the electromagnetic transducer shown in FIG. 1 according to the present invention;
fig. 3 is a schematic diagram of a coil that is turned on when the diaphragm structure of the electromagnetic transducer shown in fig. 1 outputs bass and treble according to the present invention.
The electromagnetic transducer comprises an electromagnetic transducer-100, an outer shell-1, a permanent magnet plate-2, a diaphragm-3, a coil-31, a resin film structure-32, an elastic member-33, a fixing member-4, an exhaust through hole-5, a conductive section-331 and an insulating section-332.
Detailed Description
In order to solve the problems that the diaphragm form of the existing flat-panel earphone is single, and the vibration of the diaphragm is difficult to highlight the audio signal, namely the audio restoring degree and the expressive force cannot be increased, the intelligent adjustment flat-panel earphone provided by the invention is realized by the following technical scheme:
example 1:
referring to fig. 1-2, fig. 1 is a schematic diagram of an electromagnetic transducer of an intelligent adjustment flat-panel earphone according to an embodiment of the present invention, including an electromagnetic transducer 100; the electromagnetic transducer 100 includes: the vibration isolation structure comprises an outer shell 1, a permanent magnet plate 2, a vibrating diaphragm 3 arranged opposite to the permanent magnet plate, and a fixing component 4 for fixing the position of the vibrating diaphragm relative to the permanent magnet plate;
the permanent magnet plate 2 is of a rigid plate-shaped structure and comprises a base body and strip-shaped magnetic poles; the substrate is provided with strip-shaped magnetic poles with NS poles arranged in parallel and alternately appearing, and a plurality of uniformly distributed exhaust through holes are arranged in the substrate and in a neutral zone between the strip-shaped magnetic poles;
fig. 2 is a schematic diagram of a diaphragm structure in the electromagnetic transducer shown in fig. 1, in which a main body of the diaphragm 3 is a flexible resin film structure 32, a plurality of groups of coils 31 are arranged on the resin film structure 32, patterns formed by the plurality of groups of coils 31 are concentric rings, concentric rings formed by different groups of coils 31 have different sizes, and input electrical signals of the concentric rings can be controlled respectively.
The strip-shaped magnetic pole is divided into a strip-shaped N pole and a strip-shaped S pole. The bar-shaped N pole and the bar-shaped S pole appear alternately on the surface of the permanent magnet plate 2 by magnetization. The absolute value of the perpendicular magnetic field component with respect to the surface of the permanent magnet plate 2 becomes maximum in the vicinity of the strip-shaped N pole and the strip-shaped S pole, and becomes minimum in the vicinity of the boundary between the strip-shaped N pole and the strip-shaped S pole, these regions being referred to as "neutral regions".
Specifically, the concentric rings of coils 31 are equally spaced from the center of the ring to the periphery of the ring.
Specifically, when the high and low tones of the input electrical signal are different, a part of the group of coils 31 in the plurality of groups of coils 31 is controlled to be turned on so that the distribution density of the turned-on coils 31 on the outer side in the direction of the ring center toward the ring outer periphery is different from the distribution density of the turned-on coils 31 on the inner side, referring to fig. 3, fig. 3 is a schematic diagram of the coils turned on when the diaphragm structure in the electromagnetic transducer shown in fig. 1 outputs low tones and high tones.
Specifically, when the input electric signal is a bass signal, controlling a part of the group of coils 31 in the plurality of groups of coils 31 to be turned on so that the distribution of the turned-on coils 31 along the center of the ring toward the outer side of the outer circumferential direction of the ring is denser than the distribution of the turned-on coils 31 on the inner side; when the input electric signal is a high-pitch signal, a part of the coils 31 in the plurality of coils 31 are controlled to be turned on, so that the coils 31 turned on are distributed more densely than the coils 31 turned on. Therefore, the bass signal is mostly vibrated outside the vibrating diaphragm 3, and the output bass is muddy and deep; the high pitch signal is mostly vibrated at the inner side of the vibrating diaphragm 3, so that the output high pitch is clear and high; and meanwhile, the energy consumption can be more reasonable.
Specifically, the plurality of sets of coils 31 are arranged on the upper and lower surfaces of the resin film structure 32, and the arrangement of the plurality of sets of coils is the same.
Specifically, a circle of elastic member 33 is provided on the outer peripheral surface of the resin film structure 32, the elastic member 33 having a plurality of conductive sections 331 and a plurality of insulating sections 332 in the circumferential direction; each two of the conductive sections 331 are electrically connected to two ends of each set of the coils 31, respectively, for applying an electrical signal to the coils 31. By replacing the existing locally glued conductive joints by a ring of elastic members 33, the local stress on the diaphragm 3 and the influence of the conductive joints on the vibration characteristics are reduced, the conductive joints are prevented from falling off, and the separate control of the sets of coils 31 is adapted.
Specifically, the elastic member 33 is a fabric tape.
Specifically, the fabric tape is composed of at least a base layer and an active layer stacked and bonded to obtain a predetermined thickness, the active layer being provided with the plurality of conductive sections 331 and the plurality of insulating sections 332 alternately in the circumferential direction, the base layer being woven from insulating material threads.
Specifically, the conductive section 331 is woven from conductive material filaments and the insulative section 332 is woven from insulative material filaments.
Specifically, the conductive section 331 and the insulating section 332 are both woven from insulating material threads, and the conductive section 331 is coated with a conductive material after being woven. Therefore, the fabric of the action layer is easier to process, and the integrity is better.
Specifically, terminal pins are buried and electrically connected in the conductive section 331. An external input electrical signal may be applied to the corresponding coil 31 through the terminal pin.
Specifically, an intermediate layer is further included between the base layer and the action layer, and at least two conductive segments are arranged on the intermediate layer at intervals along the circumferential direction through insulating segments.
Specifically, a first one of the conductive segments is bonded to the plurality of conductive sections 331 by a conductive adhesive, and when the input electric signal is a bass signal, the coil 31 to which the plurality of conductive sections 331 are connected is turned on; a second one of the conductive segments is adhered to the plurality of conductive segments 331 by a conductive adhesive, and when the input electric signal is a treble signal, the coil 31 connected to the plurality of conductive segments 331 is turned on.
Specifically, terminal pins are buried and electrically connected in the first conductive segment and the second conductive segment. An external input electrical signal may be applied to the corresponding coil 31 through the terminal pin. So that when the input electric signal is a bass signal, the coils 31 for outputting bass can be simultaneously turned on through the first conductive segments; when the input electric signal is a treble signal, the coil 31 for outputting treble can be simultaneously turned on by the first conductive segment: the control is simple and convenient.
Specifically, the peripheral region of the diaphragm 3 is fixed by the fixing member 4 so that the diaphragm 3 is restricted from displacement in the planar direction, but the diaphragm 3 may be displaced in the thickness direction; the fixing member 4 is in the form of a hoop and is used to fix the diaphragm 3 from the outer periphery thereof.
When the diaphragm 3 is circular, the fixing member 4 is a single circular hoop-type hoop band. When the vibrating diaphragm 3 is square, the fixing member 4 is a combined hoop surrounded by a plurality of hoop strips. The fixing member 4 is embedded in the outer shell 1, and the hoop band or the hoop bar and the outer shell 1 clamp the diaphragm 3. The surface of the hoop holding band or the hoop strip, which faces the vibrating diaphragm 3, is provided with a strip-shaped bulge perpendicular to the hoop holding band or the hoop strip main body, so that the cross section of at least part of the hoop holding band or the hoop strip is in a T shape; the surface of the outer shell 1 facing the diaphragm 3 is provided with a strip-shaped groove matched with the strip-shaped bulge; through the structure, a zigzag compression matching surface can be formed between the hoop clamping band or the hoop strip and the outer shell 1, and the vibrating diaphragm 3 can be prevented from being misplaced in the plane direction.
The invention provides an intelligent adjustment flat-panel earphone, which comprises an electromagnetic transducer 100; the electromagnetic transducer 100 includes: the vibration isolation structure comprises an outer shell 1, a permanent magnet plate 2, a vibrating diaphragm 3 arranged opposite to the permanent magnet plate, and a fixing component 4 for fixing the vibrating diaphragm; the main body of the diaphragm 3 is a flexible resin film structure 32, a plurality of groups of coils 31 are arranged on the resin film structure 32, the patterns formed by the plurality of groups of coils 31 are concentric rings, the concentric rings formed by different groups of coils 31 have different sizes, and the input electric signals of the concentric rings can be controlled respectively; the vibration characteristic of the diaphragm can be controlled according to the characteristics of the audio signal, and the restoring degree and the expression of high and low audio frequencies are increased.
It should be noted that the above-mentioned embodiments are provided for further detailed description of the present invention, and the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can make various modifications and variations on the above-mentioned embodiments without departing from the scope of the present invention.

Claims (15)

1. An intelligent adjustment flat earphone is characterized by comprising an electromagnetic transducer; the electromagnetic transducer includes: the vibration isolator comprises an outer shell, a permanent magnet plate, a vibration film and a fixing component, wherein the vibration film is arranged opposite to the permanent magnet plate;
the permanent magnet plate is of a rigid plate-shaped structure and comprises a base body and strip-shaped magnetic poles; the substrate is provided with strip-shaped magnetic poles with NS poles arranged in parallel and alternately appearing, and a plurality of uniformly distributed exhaust through holes are arranged in the substrate and in a neutral zone between the strip-shaped magnetic poles;
the diaphragm main body is of a flexible resin film structure, a plurality of groups of coils are arranged on the resin film structure, patterns formed by the coils are concentric rings, the concentric rings formed by different groups of coils are different in size, and input electric signals of the concentric rings can be controlled respectively.
2. A smart tablet headset according to claim 1, wherein the concentric rings of coils are equally spaced from the centre of the ring towards the periphery of the ring.
3. The smart tablet earphone according to claim 1 or 2, wherein when the high and low tones of the input electric signal are different, a part of the plurality of sets of coils is controlled to be turned on so that the distribution density of the turned-on coils along the center of the ring toward the outer side of the outer circumferential direction of the ring is different from the distribution density of the turned-on coils on the inner side.
4. The smart tablet earphone according to claim 3, wherein when the input electric signal is a bass signal, a part of the plurality of sets of coils is controlled to be turned on so that the distribution of the turned-on coils along the center of the ring toward the outer side of the outer circumferential direction of the ring is denser than the distribution of the turned-on coils on the inner side; when the input electric signal is a high-pitch signal, controlling a part of the coils in the plurality of groups to be switched on so that the distribution of the switched-on coils along the center of the ring towards the inner side of the outer circumference of the ring is denser than that of the switched-on coils at the outer side.
5. The smart tablet earphone according to claim 1 or 2, wherein the plurality of sets of coils are provided on both upper and lower surfaces of the resin film structure.
6. The smart tablet earphone according to claim 5, wherein a ring of elastic member having a plurality of conductive sections and a plurality of insulating sections in a circumferential direction is provided on an outer circumferential surface of the resin film structure; and each two conductive sections are correspondingly and electrically connected with two ends of each group of coils and used for applying electric signals to the coils.
7. The smart tablet headset of claim 6, wherein the elastic member is a fabric band.
8. The smart tablet phone of claim 7, wherein the fabric band is composed of at least a base layer and an active layer stacked and bonded to obtain a predetermined thickness, the active layer being alternately provided with the plurality of conductive segments and the plurality of insulating segments in a circumferential direction, the base layer being woven from insulating material threads.
9. The smart tablet phone of claim 8, wherein the conductive section is woven from conductive material threads and the insulative section is woven from insulative material threads.
10. The smart tablet phone of claim 8, wherein the conductive and insulating sections are each woven from insulating material threads, and wherein the conductive section is coated with a conductive material after weaving.
11. Smart tuned flat earphone according to claim 9 or 10, characterized in that terminal pins are embedded and electrically connected in the conductive section.
12. The smart tablet phone of claim 8, further comprising an intermediate layer between the base layer and the active layer, wherein the intermediate layer is provided with at least two conductive segments circumferentially spaced apart by an insulating segment.
13. The smart tablet phone of claim 12, wherein a first one of the conductive segments is adhered to a plurality of conductive segments by a conductive adhesive, and wherein a coil connected to the plurality of conductive segments is turned on when an input electrical signal is a bass signal; a second one of the conductive segments is bonded to a plurality of conductive segments by a conductive adhesive, and when an input electric signal is a high-pitched signal, a coil connected to the plurality of conductive segments is turned on.
14. The smart tablet headset of claim 13, wherein terminal pins are embedded and electrically connected inside the first and second conductive segments.
15. A smart tuning tablet headset according to claim 1, wherein the outer peripheral region of the diaphragm is fixed by the fixing member such that the diaphragm is restricted from displacement in the planar direction but is displaceable in the thickness direction; the fixing member is in a hoop type and is used for fixing the diaphragm from the periphery of the diaphragm.
CN202111159687.XA 2021-09-30 2021-09-30 Intelligent regulation flat-panel earphone Active CN113949972B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111159687.XA CN113949972B (en) 2021-09-30 2021-09-30 Intelligent regulation flat-panel earphone

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Application Number Priority Date Filing Date Title
CN202111159687.XA CN113949972B (en) 2021-09-30 2021-09-30 Intelligent regulation flat-panel earphone

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CN113949972A true CN113949972A (en) 2022-01-18
CN113949972B CN113949972B (en) 2024-01-16

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007281886A (en) * 2006-04-06 2007-10-25 Mitsubishi Electric Engineering Co Ltd Electromagnetic transducer
CN109788411A (en) * 2018-12-17 2019-05-21 海菲曼（天津）科技有限公司 A kind of electroacoustic transducer and moving-coil plate compounding loudspeaker
CN109923875A (en) * 2016-11-04 2019-06-21 三星电子株式会社 Planar magnet loudspeaker
JP2019161542A (en) * 2018-03-15 2019-09-19 オンキヨー株式会社 Diaphragm, speaker unit including the same, headphone, earphone, and method of manufacturing diaphragm

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007281886A (en) * 2006-04-06 2007-10-25 Mitsubishi Electric Engineering Co Ltd Electromagnetic transducer
CN109923875A (en) * 2016-11-04 2019-06-21 三星电子株式会社 Planar magnet loudspeaker
JP2019161542A (en) * 2018-03-15 2019-09-19 オンキヨー株式会社 Diaphragm, speaker unit including the same, headphone, earphone, and method of manufacturing diaphragm
CN109788411A (en) * 2018-12-17 2019-05-21 海菲曼（天津）科技有限公司 A kind of electroacoustic transducer and moving-coil plate compounding loudspeaker

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