WO2020257980A1 - Haut-parleur ultra-mince de type parallèle et son procédé d'assemblage - Google Patents

Haut-parleur ultra-mince de type parallèle et son procédé d'assemblage Download PDF

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Publication number
WO2020257980A1
WO2020257980A1 PCT/CN2019/092564 CN2019092564W WO2020257980A1 WO 2020257980 A1 WO2020257980 A1 WO 2020257980A1 CN 2019092564 W CN2019092564 W CN 2019092564W WO 2020257980 A1 WO2020257980 A1 WO 2020257980A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
magnetic
voice coil
diaphragm
magnetic conductive
Prior art date
Application number
PCT/CN2019/092564
Other languages
English (en)
Chinese (zh)
Inventor
刘浪
徐辉
哈海学
刘斌
Original Assignee
深圳东原电子有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳东原电子有限公司 filed Critical 深圳东原电子有限公司
Priority to CN201980000894.5A priority Critical patent/CN110495187B/zh
Priority to PCT/CN2019/092564 priority patent/WO2020257980A1/fr
Publication of WO2020257980A1 publication Critical patent/WO2020257980A1/fr

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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
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts
    • 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
    • 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
    • H04R9/045—Mounting
    • 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 the technical field of loudspeakers, and more specifically, to a parallel ultra-thin loudspeaker and an assembly method thereof.
  • a speaker is an energy conversion device that converts electrical energy into sound energy. According to the principle of energy conversion, it can be divided into electrodynamic, electrostatic, electromagnetic and piezoelectric, among which electrodynamic speakers are the most widely used and most widely used One of the most common usage is to apply it to speakers and other sound-producing devices. With the development of technology, speakers and other sound-producing devices are developing towards integration and miniaturization. In order to adapt to this trend, thin speakers have emerged.
  • thin speakers appearing on the market include low-mid-range thin speakers, mid-high-range thin speakers, and fringe magnetic field structure thin speakers.
  • the three types of thin speakers are briefly described below:
  • the low-mid-range thin speaker includes a lower magnetic conductive plate 11, a main magnet 12, an upper magnetic conductive plate 13, a secondary magnet 14, a voice coil 15, a bracket 16, a diaphragm 17, an elastic wave 18 and The dust cap 19,
  • the lower magnetic conductive plate 11 includes a bottom magnetic conductive plate 111 and a magnetic conductive sleeve 110.
  • the voice coil 15 is located in the magnetic gap formed by the inner surface of the magnetic conductive sleeve 110 and the side surface of the main magnet 12, and its upper end extends
  • the magnetic sleeve 110, the diaphragm 17 and the elastic wave 18 are all located above the magnetic sleeve 110 and are all fixedly connected to the extended end of the voice coil 15.
  • the diaphragm 17 and the elastic wave 18 are located above the magnetic sleeve 110, resulting in vibration
  • the thickness of the diaphragm 17, the amplitude of the diaphragm 17, the thickness of the elastic wave 18, the amplitude of the elastic wave 18 and the height of the magnetic sleeve 110 are in a series relationship, so that the thickness of the speaker, where represents the thickness of the bottom magnetic plate 111, Represents the height of the magnetic sleeve 110, represents the distance between the elastic wave 18 and the magnetic sleeve 110, represents the thickness of the elastic wave 18, represents the distance between the diaphragm 17 and the elastic wave 18, represents the thickness of the diaphragm 17, and represents the upward direction of the diaphragm 17
  • the mid-to-treble thin speaker includes a lower magnetic conductive plate 21, a main magnet 22, an upper magnetic conductive plate 23, a secondary magnet 24, a voice coil 25, a bracket 26, a diaphragm 27 and a dust cap 28,
  • the lower magnetic conductive plate 21 includes a bottom magnetic conductive plate 211 and a magnetic conductive sleeve 210.
  • the voice coil 25 is located in the magnetic gap formed by the inner side surface of the magnetic conductive sleeve 210 and the side surface of the main magnet 22, and the upper end thereof extends out of the magnetic conductive sleeve 210.
  • the diaphragm 27 is located above the magnetic sleeve 210 and is fixedly connected to the extending end of the voice coil 25.
  • the thickness of the diaphragm 27 is located above the magnetic sleeve 210, the thickness of the diaphragm 27, the amplitude of the diaphragm 27, and the magnetic sleeve
  • the height of 210 is in a series relationship, so that the thickness of the loudspeaker, in the formula, represents the thickness of the bottom magnetic conductive plate 211, represents the height of the magnetic sleeve 210, represents the distance between the diaphragm 27 and the magnetic sleeve 210, and represents the thickness of the diaphragm 27.
  • the thickness represents the upward amplitude of the diaphragm 27.
  • the thin speaker with a fringe magnetic field structure includes a bracket 31, a main magnet 32, an upper magnetic plate 33, a secondary magnet 34, a voice coil 35, a diaphragm 36 and a dust cap 37, and 35 sets of voice coils.
  • the diaphragm 36 is located above the auxiliary magnet 34 and is fixedly connected to the voice coil 35.
  • Its thickness where represents the thickness of the bottom of the bracket 31, represents the main magnet 32
  • the thickness of represents the thickness of the upper magnetic conductive plate 33, the thickness of the auxiliary magnet 34, the distance between the diaphragm 36 and the auxiliary magnet 34, the thickness of the diaphragm 36, and the upward amplitude of the diaphragm 36.
  • the diaphragm and elastic wave of the low-mid-range thin speaker are located above the magnetic sleeve, resulting in the thickness of the diaphragm, the amplitude of the diaphragm, the thickness of the elastic wave, the amplitude of the elastic wave and the The height is in series, making the low-mid-range thin speakers thicker, while the mid-high-range thin speakers cancel the elastic wave on the basis of the low-mid-range thin speakers, so that the thickness is reduced, but the diaphragm is still located in the magnetic sleeve Above, the thickness of the diaphragm, the amplitude of the diaphragm, and the height of the magnetic sleeve are still connected in series.
  • the mid-to-treble thin speakers are still thick; on the other hand, the thin speakers with fringe magnetic field structure not only cancel the elastic wave but also cancel the thickest.
  • the lower magnetic plate is the thinnest among these three types of thin speakers.
  • the magnetic induction intensity of the thin speaker with fringe magnetic field structure is Smaller.
  • Figure 13 and Figure 14 under the same condition of the main magnet, compared with the BL value of the low-mid-range thin speaker, the BL value of the thin speaker with fringe magnetic field structure is reduced by 45%.
  • the thin speaker of the structure can be made very thin, but its magnetic circuit has poor magnetic permeability and low magnet utilization.
  • the technical problem to be solved by the present invention is to provide a parallel ultra-thin speaker and an assembly method of the parallel ultra-thin speaker in view of the above-mentioned defects of the prior art.
  • a parallel ultra-thin speaker which includes a lower magnetic conductive plate; the lower magnetic conductive plate includes a magnetic conductive sleeve; the magnetic conductive sleeve is provided with a main magnet; A magnetic gap is formed between the inner sides of the magnetic sleeve; a voice coil is provided in the magnetic gap; a diaphragm is provided on the outer sleeve of the magnetic sleeve; the voice coil and the diaphragm are connected by a plurality of insulating bridges Connection; the side of the magnetic sleeve is provided with a through slot for longitudinal movement of the insulating connecting bridge.
  • the upper surface of the diaphragm is always lower than the upper surface of the magnetic sleeve.
  • an outer connecting sleeve is coaxially penetrated in the diaphragm; the outer side of the outer connecting sleeve is fixedly connected to the inner side of the diaphragm; the outer connecting The sleeve is fixedly connected to the end of the insulating connecting bridge away from the voice coil.
  • the parallel ultra-thin speaker of the present invention wherein the outer coaxial sleeve of the voice coil is provided with an inner connecting sleeve; the inner side of the inner connecting sleeve is fixedly connected with the outer side of the voice coil; the inner connecting The sleeve is fixedly connected to the end of the insulating connecting bridge close to the voice coil; the inner connecting sleeve is made of insulating material.
  • the parallel ultra-thin speaker of the present invention wherein the voice coil includes a voice coil bobbin and a coil sheathed outside the voice coil bobbin; the coil partially shields the voice coil bobbin; the inner connection The sleeve is arranged corresponding to the unshielded part of the voice coil skeleton; the inner side of the inner connecting sleeve is fixedly connected to the outer side of the unshielded part of the voice coil skeleton.
  • the parallel ultra-thin loudspeaker of the present invention wherein the inner connecting sleeve, the outer connecting sleeve and a plurality of the insulating connecting bridges form a connecting piece; the connecting piece is made by integral molding; The upper end surface of the magnetic sleeve is connected.
  • the parallel ultra-thin speaker of the present invention wherein the outer connecting sleeve is also sleeved with elastic waves; the inner edge of the elastic wave is fixedly connected to the outer connecting sleeve; the elastic waves are arranged on the Below the diaphragm.
  • the lower magnetic conductive plate further includes a bottom magnetic conductive plate; the lower end of the magnetic conductive sleeve is fixedly connected to the upper surface of the bottom magnetic conductive plate; A bottom plate for installing the bottom magnetic conductive plate; the upper surface of the bottom plate is provided with installation through holes that are interference fit with the bottom magnetic conductive plate; the upper surface of the bottom plate is also fixedly provided with a diaphragm for installing the diaphragm A first installation protrusion and a second installation protrusion for installing the elastic wave; the outer edge of the diaphragm is fixedly connected with the first installation protrusion by a flange; the second installation protrusion is arranged at Below the diaphragm; the outer edge of the elastic wave is fixedly connected to the second mounting protrusion.
  • an upper magnetic conductive plate and a secondary magnet are sequentially arranged in the voice coil from bottom to top; the polarity of the secondary magnet is opposite to that of the main magnet;
  • the upper magnetic conductive plate is arranged above the main magnet; the bottom magnetic conductive plate, the main magnet, the upper magnetic conductive plate and the secondary magnet are fixedly connected in sequence.
  • a method for assembling a parallel ultra-thin speaker is provided, based on the above-mentioned parallel ultra-thin speaker, wherein the method includes the following steps:
  • the main magnet, the upper magnetic conductive plate, and the secondary magnet are sequentially glued and put into the magnetic conductive sleeve, the main magnet and the bottom magnetic conductive plate are also glued together ,
  • the magnetic gap is formed between the inner side surface of the magnetic conductive sleeve and the side surface of the main magnet;
  • the voice coil and the diaphragm are connected by an insulating bridge that penetrates through the groove and can move longitudinally in the groove.
  • the vibration of the voice coil can drive the diaphragm to vibrate; the diaphragm is sleeved outside the magnetic sleeve, and the thickness of the diaphragm And the amplitude of the diaphragm and the height of the magnetic sleeve are connected in parallel, so that the thickness of the speaker is greatly reduced; the magnetic sleeve is used to conduct magnetism, which has strong magnetic permeability and high magnet utilization.
  • FIG. 1 is a schematic diagram of the structure of a parallel ultra-thin speaker according to a preferred embodiment of the present invention
  • Figure 2 is a cross-sectional view of a parallel ultra-thin speaker according to a preferred embodiment of the present invention
  • Fig. 3 is an exploded view of a parallel ultra-thin speaker according to a preferred embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a connecting piece of a parallel ultra-thin speaker according to a preferred embodiment of the present invention.
  • Fig. 5 is a structural diagram (cross-sectional view) of an existing low-mid-range thin speaker
  • Fig. 6 is a schematic diagram of the thickness composition of a conventional low-mid-range thin speaker
  • Fig. 7 is a schematic structural diagram (cross-sectional view) of an existing mid-to-treble thin speaker
  • FIG. 8 is a schematic diagram of the thickness composition of the existing mid- to high-range thin speaker
  • Fig. 9 is a structural diagram (cross-sectional view) of a thin speaker with a conventional fringe magnetic field structure
  • FIG. 10 is a schematic diagram of the thickness composition of a thin speaker with an existing fringe magnetic field structure
  • Fig. 11 is a distribution diagram of magnetic field lines of a conventional low-mid-range thin speaker (without auxiliary magnets);
  • Figure 12 is a distribution diagram of magnetic lines of force of a thin speaker with a fringe magnetic field structure (without auxiliary magnets);
  • Figure 13 is a BL curve diagram of a conventional low-mid-range thin speaker (without auxiliary magnet);
  • Fig. 14 is a BL curve diagram of a thin speaker with an existing fringe magnetic field structure (without auxiliary magnets);
  • Figure 15 is a distribution diagram of magnetic field lines of the present invention.
  • Figure 16 is a distribution diagram of magnetic field lines of a comparative example
  • Figure 17 is a BL curve diagram of the present invention and a comparative example
  • the lower curve in FIG. 17 is the BL curve of the present invention, and the upper curve is the BL curve of the comparative example;
  • the abscissa of the BL graph is the displacement of the voice coil, and the ordinate is the BL value where the voice coil is located.
  • the structure diagram of the parallel ultra-thin loudspeaker of the preferred embodiment of the present invention is shown in FIG. 1, and refer to FIGS. 2 to 4 at the same time; it includes a lower magnetic conductive plate 48; the lower magnetic conductive plate 48 includes a magnetic conductive sleeve 480; a magnetic conductive sleeve A main magnet 46 is provided in the 480; a magnetic gap 460 is formed between the side surface of the main magnet 46 and the inner surface of the magnetic sleeve 480; a voice coil 47 is provided in the magnetic gap 460; a diaphragm 40 is provided on the outer cover of the magnetic sleeve 480; The ring 47 and the diaphragm 40 are connected by a plurality of insulating connecting bridges 431; the side of the magnetic conductive sleeve 480 is provided with a through slot 4800 for the insulating connecting bridge 431 to move longitudinally; it is used to penetrate through the through slot 4800 and can be in the through slot 4800 The longitudinal
  • the magnetic flux density of the speaker with the through-slotted magnetic sleeve has a very small difference from that of the speaker without the grooved magnetic induction;
  • Figure 17 As shown, the BL value of a speaker with a through-slot in the magnetic sleeve has a small difference from that of a speaker without a through-slot in the magnetic sleeve.
  • the magnetic field has a close Because of the long-distance characteristics, the non-slotted area of the magnetic sleeve will still be used as a part of the magnetic circuit for the magnetic flux to pass through, so opening slots on the magnetic sleeve does not affect the magnetic performance of the magnetic sleeve.
  • the permeability of the magnetic sleeve will still enhance the permeability of the overall magnetic circuit.
  • a plurality of insulating connecting bridges 431 are evenly distributed along the circumferential direction of the voice coil 47, the connection effect of the diaphragm 40 and the voice coil 47 is good, and the vibration consistency of each part of the diaphragm 40 is good.
  • the upper surface of the diaphragm 40 is always lower than the upper surface of the magnetic sleeve 480; when the diaphragm 40 vibrates to the highest point, its upper surface is also lower than the upper surface of the magnetic sleeve 480, reducing the speaker thickness.
  • the diaphragm 40 is coaxially pierced with an outer connecting sleeve 430; the outer side of the outer connecting sleeve 430 is fixedly connected to the inner side of the diaphragm 40; the outer connecting sleeve 430 is connected to the insulation
  • the end of the bridge 431 away from the voice coil 47 is fixedly connected; the outer connecting sleeve 430 is used to connect the diaphragm 40 and the insulating connection bridge 431 together, which increases the connection area between the insulating connection bridge 431 and the diaphragm 40 and makes the connection more reliable.
  • the upper surface of the outer connecting sleeve 430 is lower than the upper surface of the magnetic conductive sleeve 480 when the voice coil 47 is stationary; this prevents the thickness of the speaker from being increased due to the provision of the outer connecting sleeve 430.
  • the outer coaxial sleeve of the voice coil 47 is provided with an inner connecting sleeve 432; the inner side of the inner connecting sleeve 432 is fixedly connected to the outer side of the voice coil 47; the inner connecting sleeve 432 is connected to the insulation
  • the end of the bridge 431 close to the voice coil 47 is fixedly connected; the inner connecting sleeve 432 is made of insulating material; the inner connecting sleeve 432 is used to connect the voice coil 47 and the insulating connecting bridge 431 together, increasing the insulating connecting bridge 431 and the voice coil 47
  • the connection area is larger, and the connection is more reliable.
  • the upper surface of the inner connecting sleeve 432 is lower than the upper surface of the magnetic conductive sleeve 480 when the voice coil 47 is stationary; preventing the increase of the thickness of the speaker due to the inner connecting sleeve 432.
  • the voice coil 47 includes a voice coil bobbin 470 and a coil 471 sleeved outside the voice coil bobbin 470; the coil 471 partially shields the voice coil bobbin 470; the inner connecting sleeve 432 corresponds to the voice coil bobbin 470
  • the shielded part is provided; the inner surface of the inner connecting sleeve 432 is fixedly connected to the outer surface of the unshielded part of the voice coil frame 470; the inner surface of the inner connecting sleeve 432 is fixedly connected to the outer surface of the unshielded part of the voice coil frame 470, so that The inner connecting sleeve 432 and the coil 471 partially or completely overlap in the axial direction, which reduces the space occupation and reduces the radial size of the speaker.
  • the inner connecting sleeve 432, the outer connecting sleeve 430, and a plurality of insulating connecting bridges 431 form a connecting piece 43; the connecting piece 43 is formed by integral molding; the through groove 4800 and the upper end surface of the magnetic sleeve 480
  • the inner connecting sleeve 432, the outer connecting sleeve 430 and the plurality of insulating connecting bridges 431 are integrally formed into the connecting piece 43, which facilitates the assembly of the connecting piece 43 with the diaphragm 40 and the voice coil 47; the upper part of the through groove 4800 and the magnetic conductive sleeve 480 The end faces are connected.
  • the insulating connecting bridge 431 can be put into the through groove 4800 from top to bottom, which is convenient for the installation of the connecting piece 43.
  • the design there is no need to consider the through groove according to the amplitude of the voice coil 47
  • the length of 4800 is convenient for design.
  • the outer connecting sleeve 430 is also sleeved with elastic waves 42; the inner edge of the elastic waves 42 is fixedly connected to the outer connecting sleeve 430; the elastic waves 42 are arranged under the diaphragm 40; It is arranged outside and fixedly connected to the outer connecting sleeve 430 to limit the radial movement of the outer connecting sleeve 430 so as to limit the radial movement of the voice coil 47, so that the voice coil 47 is always in the correct position in the magnetic gap 460 to ensure the sound Ring 47 vibrates normally.
  • the lower magnetic conductive plate 48 also includes a bottom magnetic conductive plate 481; the lower end of the magnetic sleeve 480 is fixedly connected to the upper surface of the bottom magnetic conductive plate 481; and the lower magnetic conductive plate 481 is also included for mounting
  • the thickness of the bottom magnetic conductive plate 481 is equal to that of the bottom plate 492.
  • the thickness is connected in parallel, which has little effect on the thickness of the speaker.
  • a mounting structure can be provided on the bottom plate 492 or the first mounting protrusion 490, such as mounting side ears, mounting the bottom magnetic conductive plate 481 on the bottom plate 492, and mounting the elastic wave 42 on the second mounting protrusion 491 and After the diaphragm 40 is mounted on the first mounting protrusion 490, the speaker can be mounted to the outside by using fasteners matched with the mounting structure, such as screws.
  • an upper magnetic conductive plate 45 and a secondary magnet 44 are arranged in the voice coil 47 from bottom to top; the polarity of the secondary magnet 44 is opposite to that of the main magnet 46; the upper magnetic conductive plate 45 is provided with Above the main magnet 46; the bottom magnetic conductive plate 481, the main magnet 46, the upper magnetic conductive plate 45 and the secondary magnet 44 are fixedly connected in turn; the upper magnetic conductive plate 45 is provided to enhance the magnetic permeability, and the secondary magnet 44 is provided to prevent magnetic leakage .
  • the method for assembling the parallel ultra-thin speaker according to the preferred embodiment of the present invention includes the following steps:
  • a magnetic gap 460 is formed between the inner side surface and the side surface of the main magnet 46;
  • the fold 41 and the first mounting protrusion 490 are adhered with glue; the assembly is convenient.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Manufacturing & Machinery (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

La présente invention concerne un haut-parleur ultramince de type parallèle, comprenant une plaque de conduction magnétique inférieure. La plaque de conduction magnétique inférieure comprend un manchon de conduction magnétique ; un aimant principal est prévu dans le manchon de conduction magnétique ; un entrefer magnétique est formé entre la surface latérale de l'aimant principal et la surface latérale intérieure du manchon de conduction magnétique ; une bobine mobile est prévue dans l'entrefer magnétique ; une membrane vibrante est placée à l'extérieur du manchon de conduction magnétique ; la bobine mobile et la membrane vibrante sont reliées au moyen d'une pluralité de ponts de connexion isolants ; la surface latérale du manchon de conduction magnétique est pourvue d'une fente traversante dans laquelle les ponts de connexion isolants se déplacent longitudinalement ; la bobine mobile et la membrane vibrante sont reliées par les ponts de connexion isolants qui pénètrent dans la fente de passage et peuvent se déplacer longitudinalement dans la fente de passage ; la vibration de la bobine mobile peut faire vibrer la membrane vibrante ; la membrane vibrante est gainée à l'extérieur du manchon à conduction magnétique ; l'épaisseur et l'amplitude de vibration de la membrane de vibration et la hauteur du manchon de conduction magnétique sont parallèles, de sorte que l'épaisseur du haut-parleur est fortement réduite ; le manchon de conduction magnétique est utilisé pour la conduction magnétique, et donc, la présente invention est forte en conductivité magnétique et élevée dans le taux d'utilisation de l'aimant.
PCT/CN2019/092564 2019-06-24 2019-06-24 Haut-parleur ultra-mince de type parallèle et son procédé d'assemblage WO2020257980A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980000894.5A CN110495187B (zh) 2019-06-24 2019-06-24 一种并联式超薄扬声器及其装配方法
PCT/CN2019/092564 WO2020257980A1 (fr) 2019-06-24 2019-06-24 Haut-parleur ultra-mince de type parallèle et son procédé d'assemblage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/092564 WO2020257980A1 (fr) 2019-06-24 2019-06-24 Haut-parleur ultra-mince de type parallèle et son procédé d'assemblage

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WO2020257980A1 true WO2020257980A1 (fr) 2020-12-30

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CN113578694B (zh) * 2021-06-30 2022-11-29 潍坊歌尔丹拿电子科技有限公司 装配工具

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Publication number Priority date Publication date Assignee Title
US4921208A (en) * 1989-09-08 1990-05-01 Automatic Switch Company Proportional flow valve
CN2439155Y (zh) * 2000-07-20 2001-07-11 深圳市东原电子有限公司 双气隙驱动器
CN1301128A (zh) * 2001-01-05 2001-06-27 深圳东原电子有限公司 全音频扬声器
CN105142080A (zh) * 2015-09-23 2015-12-09 宁波东源音响器材有限公司 一种两侧发音的可悬挂式扬声器
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CN110495087A (zh) * 2017-04-19 2019-11-22 三菱电机株式会社 半导体模块以及电力变换装置

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