WO2022166383A1 - Dispositif de production de son et écouteur - Google Patents

Dispositif de production de son et écouteur Download PDF

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Publication number
WO2022166383A1
WO2022166383A1 PCT/CN2021/136331 CN2021136331W WO2022166383A1 WO 2022166383 A1 WO2022166383 A1 WO 2022166383A1 CN 2021136331 W CN2021136331 W CN 2021136331W WO 2022166383 A1 WO2022166383 A1 WO 2022166383A1
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WO
WIPO (PCT)
Prior art keywords
diaphragm
tweeter
magnetic
bass
sound
Prior art date
Application number
PCT/CN2021/136331
Other languages
English (en)
Chinese (zh)
Inventor
王莹
郭晓冬
Original Assignee
歌尔股份有限公司
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 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2022166383A1 publication Critical patent/WO2022166383A1/fr

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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
    • H04R1/1058—Manufacture or assembly
    • H04R1/1075—Mountings of transducers in earphones or headphones
    • 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
    • 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

Definitions

  • the present invention relates to the technical field of electro-acoustic conversion, in particular to a sound-generating device and an earphone.
  • the sound-generating device of conventional earphones generally only contains one vibration unit.
  • This kind of structure design is relatively simple, but it cannot take into account the performance and sound quality of the product in different frequency bands at high frequency and low frequency.
  • the sound quality is poor, and some earphones have low frequency.
  • the performance is better, and some are better at high frequency.
  • the sound-generating device of the dual-vibration unit can satisfy the simultaneous operation of low-frequency and high-frequency, and has a complementary and improved effect on the performance curve of the product and the sound quality of listening.
  • the existing dual-vibration unit sound-generating device generally adopts an external stacking type, that is, the tweeter unit and the woofer unit are in the same or opposite direction up and down, occupying a large space, low magnetic circuit utilization, and slightly insufficient bandwidth and sound quality.
  • the main purpose of the present invention is to provide a sound-generating device and an earphone, aiming at solving the technical problem that the existing sound-generating device that can satisfy both high frequency and low frequency effects takes up a large space.
  • the present invention provides a sounding device, the sounding device includes:
  • the magnetic yoke includes an accommodating portion, the accommodating portion includes a side wall and a bottom wall, and the side wall and the bottom wall are connected to each other to form an accommodating space;
  • a tweeter unit the tweeter unit includes a first magnetic part, a tweeter diaphragm and a tweeter voice coil connected to the tweeter diaphragm, the first magnetic part is placed in the accommodating space, the first magnetic part A high-pitched magnetic gap is formed between the side wall and the high-pitched voice coil for insertion, and the high-pitched diaphragm is a plane metal diaphragm;
  • a bass unit the bass unit includes a second magnetic part, a bass diaphragm and a bass voice coil connected to the bass diaphragm, and a bass voice coil is formed between the second magnetic part and the side wall for insertion of the bass voice coil
  • the bass magnetic gap, the woofer and the tweeter are coaxially arranged.
  • the magnetic yoke further includes a connecting portion extending outward from one end of the side wall away from the bottom wall, and the edge of the high-pitched diaphragm is fixed to the connecting portion through a first fixing ring.
  • the magnetic yoke further includes a surrounding portion circumferentially surrounding the outer circumference of the connecting portion, and the second magnetic portion is fixed to a side of the surrounding portion away from the tweeter diaphragm.
  • the first magnetic part includes a first magnetic steel and a first washer fixed to the first magnetic steel, the first magnetic steel is fixed to the bottom wall, and the second magnetic part includes A second magnetic steel and a second washer fixed to the second magnetic steel, the second magnetic steel is fixed to the side of the surrounding portion away from the tweeter diaphragm, the first washer is connected to the The treble magnetic gap is formed between the side walls, and the bass magnetic gap is formed between the second washer and the side wall.
  • the surrounding portion is provided with a sound outlet that communicates with the bass magnetic gap.
  • the tweeter diaphragm is a single-layer metal layer.
  • the tweeter diaphragm includes a metal layer and a damping layer disposed outside the metal layer.
  • the thickness of the tweeter diaphragm is 10-40 ⁇ m, and the elastic modulus of the tweeter diaphragm is greater than or equal to 30GPa.
  • the sound generating device further includes a cover body with a ventilation hole, and the bass diaphragm is fixed on the cover body.
  • the cover body includes a bottom cover and a side cover connected to the bottom cover, the bottom cover is spaced apart from the bass diaphragm and is provided with the ventilation hole, and the side cover is formed with a first Step, the bass diaphragm is fixed on the first step by the second fixing ring.
  • the bass unit further includes a passive radiating film located between the bass diaphragm and the bottom cover, the passive radiating film is arranged corresponding to the bass diaphragm, and the edge of the passive radiating film is fixed. on the second step formed by the side cover.
  • the present invention also provides an earphone, the earphone includes the above-mentioned sound generating device.
  • the sound-generating device includes a yoke, a tweeter and a bass unit, the yoke includes a accommodating portion, and the accommodating portion includes a side wall and a bottom wall that are interconnected to form an accommodating space;
  • the tweeter unit includes The first magnetic part, the high-pitched diaphragm and the high-pitched voice coil connected with the high-pitched diaphragm, the first magnetic part is placed in the accommodating space, and a high-pitched magnetic gap is formed between the first magnetic part and the side wall for the high-pitched voice coil to be inserted,
  • the treble diaphragm is a flat metal diaphragm;
  • the bass unit includes a second magnetic part, a bass diaphragm and a bass voice coil connected to the bass diaphragm, and a bass magnetic gap for the bass voice coil to be inserted between the second magnetic part and the side wall is formed , that is, the tweeter and the woofer of the present invention are coaxially arranged
  • FIG. 1 is a schematic cross-sectional structure diagram of an embodiment of a sound-emitting device of the present invention
  • FIG. 2 is a schematic structural diagram of an embodiment of a sound-emitting device of the present invention.
  • FIG. 3 is an exploded schematic diagram of an embodiment of the sounding device of the present invention.
  • Fig. 4 is another exploded schematic diagram of an embodiment of the sounding device of the present invention.
  • Fig. 5 is the schematic diagram of another angle of Fig. 1;
  • Fig. 6 is the bottom view of Fig. 2;
  • FIG. 7 is a plan view of FIG. 2 .
  • label name label name 10 sound device 20 yoke twenty one accommodating part 211 side wall 212 bottom wall 213 accommodation space twenty two connector twenty three surround 231 vertical wall 232 horizontal wall twenty four extension 30 tweeter 31 first magnet 32 tweeter diaphragm 33 tweeter voice coil 34 first fixing ring 35 first washer 40 woofer 41 second magnet 42 Bass diaphragm 43 Bass voice coil 44 second fixing ring 45 Second Wasser 46 Passive Radiation Film
  • the present invention provides a sounding device 10 , and the sounding device 10 includes:
  • the magnetic yoke 20, the magnetic yoke 20 includes an accommodating portion 21, and the accommodating portion 21 includes a side wall 211 and a bottom wall 212, and the side wall 211 and the bottom wall 212 are connected to each other to form an accommodating space 213;
  • the tweeter unit 30 includes a first magnetic part, a tweeter diaphragm 32 and a tweeter voice coil 33 connected to the tweeter diaphragm 32 .
  • a high-pitched magnetic gap 36 for the high-pitched voice coil 33 to be inserted is formed therebetween, and the high-pitched diaphragm 32 is a plane metal diaphragm;
  • the bass unit 40 includes a second magnetic part, a bass diaphragm 42 and a bass voice coil 43 connected to the bass diaphragm 42.
  • a bass magnet for the bass voice coil 43 to be inserted is formed between the second magnetic part and the side wall 211 In the gap 47, the woofer 40 and the tweeter 30 are arranged coaxially, and the woofer 40 and the tweeter 30 are arranged opposite to each other.
  • the magnetic yoke 20 is a magnetic conductive structure, and the side wall 211 of the accommodating portion 21 of the yoke 20 is circumferentially surrounded by the bottom wall 212, forming a accommodating space 213 in which the first magnetic portion can be placed.
  • the upper end of 33 is fixed to the tweeter diaphragm 32, and the tweeter coil 33 is inserted into the tweeter magnetic gap 36.
  • the tweeter coil 33 vibrates after being energized, thereby driving the tweeter diaphragm 32 to vibrate and emit sound.
  • the bass unit 40 and the tweeter unit 30 are arranged coaxially away from each other, and the tweeter unit 30 is integrally embedded in the bass unit 40 to directly replace the central magnetic circuit part of the bass unit 40, which not only takes into account the high frequency and low frequency performance of the sound generating device 10, but also reduces the The overall height of the sound-generating device 10 is reduced, and the space occupied by the sound-generating device 10 in the earphone is reduced.
  • the second magnetic part of the bass unit 40 is located outside the accommodating space 213, and the second magnetic part is spaced from the side wall 211 of the accommodating part 21 to form a bass magnetic gap 47, the lower end of the bass voice coil 43 and the bass diaphragm 42 is fixed, the bass voice coil 43 is inserted into the bass magnetic gap 47, and the bass voice coil 43 vibrates after being energized, thereby driving the bass diaphragm 42 to vibrate and produce sound.
  • the tweeter unit 30 and the woofer unit 40 are located on the same axis and are arranged in the opposite direction, and the tweeter unit 30 adopts an embedded structure instead of the central magnetic circuit part of the woofer unit 40, which effectively reduces the overall height of the sound generating device 10 while providing magnetic flux.
  • the tweeter diaphragm 32 is a flat metal diaphragm, that is, a flat structure is used to replace the diaphragm in the form of a traditional folding ring, so that the tweeter unit 30 has a larger frequency bandwidth;
  • the whole machine of the sound generating device 10 does not need to reserve space for avoiding the folding ring structure, so that the product size is smaller; by setting the metal high-pitched diaphragm 32, the sound has a metallic texture, providing users with different hearing experiences.
  • the yoke 20 further includes a connecting portion 22 extending outward from one end of the side wall 211 away from the bottom wall 212 , and the edge of the tweeter diaphragm 32 is fixed to the Connection part 22 .
  • the opening of the accommodating space 213 faces upward, the connecting portion 22 extends outward from the upper edge of the side wall 211 , the first fixing ring 34 can be bonded to the upper end of the connecting portion 22 , and the edge of the tweeter diaphragm 32 is bonded to the first fixing ring 34 .
  • the tweeter diaphragm 32 On the upper side of the ring 34, there is a certain gap between the lower end of the tweeter diaphragm 32 and the first magnetic part, and the upper end is not blocked, so the tweeter diaphragm 32 has a large vibration space and excellent high frequency performance.
  • the tweeter diaphragm 32 is a single-layer metal layer, and the metal layer is made of an alloy material, preferably a magnesium-aluminum alloy.
  • the tweeter diaphragm 32 includes a metal layer and a damping layer disposed outside the metal layer.
  • the metal layer may be one or more of metal materials such as magnesium-lithium alloy, magnesium-aluminum alloy, aluminum film, titanium film, stainless steel, silicon steel, etc., preferably magnesium-aluminum alloy.
  • the damping layer can be an adhesive film layer, PEEK, TPU, TPEE, etc. The damping property of the tweeter diaphragm 32 can be adjusted through the damping layer, which is beneficial to the balance of the vibration of the tweeter diaphragm 32 and brings a more delicate listening feeling.
  • the high-frequency diaphragm 32 is made of metal alloy material, which replaces the conventional elastomer material, and has the properties of high modulus and high strength.
  • the modulus is generally greater than or equal to 30GPa, and the thickness is between 10 and 40um. At the same time, it can improve the high-frequency sound quality of the earphone, can replace the rubber diaphragm or paper diaphragm in the prior art, and provide users with different choices.
  • the magnetic yoke 20 further includes a surrounding portion 23 surrounding the outer circumference of the connecting portion 22 .
  • the second magnetic portion is fixed to the side of the surrounding portion 23 away from the tweeter diaphragm 32 , that is, the upper end of the second magnetic portion and the lower end of the surrounding portion 23 are fixed. Fixed, so that the overall structure is compact, and the occupied space of the sound generating device 10 is reduced.
  • the first magnetic part includes a first magnetic steel 31 and a first washer 35 fixed to the first magnetic steel 31
  • the first magnetic steel 31 is fixed to the bottom wall 212
  • the second magnetic part includes a second magnetic steel 41
  • the second magnetic steel is fixed with the side of the surrounding portion 23 away from the tweeter diaphragm 32
  • the tweeter magnet is formed between the first washer 35 and the side wall 211 .
  • a bass magnetic gap 47 is formed between the gap 36 , the second washer 45 and the side wall 211 .
  • the first washer 35 matches the shape of the first magnetic steel 31, and is attached to the side of the first magnetic steel 31 away from the bottom wall 212 of the accommodating portion 21;
  • the second washer 45 matches the shape of the second magnetic steel 41, It is attached to the side of the second magnetic steel 41 away from the surrounding portion 23 of the yoke 20 .
  • the surrounding portion 23 includes a vertical wall 231 and a horizontal wall 232, the vertical wall 231 extends downward from the connecting portion 22, the horizontal wall 232 extends outward from the vertical wall 231, and the vertical wall 231 can be connected with the accommodating portion.
  • the side wall 211 of 21 is parallel
  • the horizontal wall 232 can be parallel to the bottom wall 212 of the accommodating portion 21
  • the lower end of the horizontal wall 232 is fixed with the upper end of the second magnetic steel 41
  • the edge of the horizontal wall 232 and the edge of the second magnetic steel 41 It can be flush, which can further reduce the occupied space of the sound-emitting device 10 .
  • the yoke 20 may further include an extension portion 24 extending from the horizontal wall 232 of the surrounding portion 23 in a direction away from the second magnetic steel 41 , that is, the extension portion 24 extends upward from the outer edge of the horizontal wall 232 , and the upper end of the extension portion 24 may be connected to the outer edge of the horizontal wall 232 .
  • the top of the tweeter diaphragm 32 is flush, which can protect the tweeter diaphragm 32 without increasing the overall height of the sound generating device 10 .
  • the surrounding portion 23 is provided with a sound outlet 231 that communicates with the bass magnetic gap 47 .
  • a through hole, a second through hole is opened on the horizontal wall 232 of the surrounding portion 23, the first through hole and the second through hole communicate together to form the sound outlet 231, and the bass magnetic gap 47 communicates with the sound outlet 231 to form a
  • the number of the sound holes 231 may be multiple, and the plurality of sound holes 231 may be evenly spaced along the circumferential direction of the surrounding portion 23 to further improve the low frequency performance of the woofer 40 .
  • the sound generating device 10 of this embodiment further includes a cover body 50 with a vent hole 511 , and the bass diaphragm 42 is fixed on the cover body 50 .
  • the cover body 50 is used to cover the bass diaphragm 42 and fix the bass unit 40.
  • the bass diaphragm 42 can be a diaphragm in the form of an ordinary folding ring, that is, the top of the ball in the middle and the surrounding ring parts.
  • the edge is fixed on the cover body 50, and when the bass diaphragm 42 vibrates, the gas between the bass diaphragm 42 and the cover body 50 can flow out through the ventilation holes 511 provided on the cover body 50, which can avoid excessive air pressure inside the bass unit 40 , so as to prevent the performance of the woofer 40 from being affected.
  • the cover body 50 includes a bottom cover 51 and a side cover 52 connected to the bottom cover 51 .
  • the bottom cover 51 is spaced apart from the bass diaphragm 42 and has the above-mentioned ventilation holes 511
  • the side cover 52 is formed with a first step 521 .
  • the bass diaphragm 42 is fixed on the first step 521 by the second fixing ring 44 .
  • the bottom cover 51 and the tweeter diaphragm 32 are arranged away from each other, and the bottom cover 51 has the functions of protection and dust prevention. Arrange.
  • the edge of the bass diaphragm 42 is fixedly clamped between the first step 521 of the side cover 52 and the second fixing ring 44 , the second washer 45 is arranged between the second fixing ring 44 and the second magnetic steel 41 , the second The user of the fixing ring 44 stably fixes the bass diaphragm 42 on the side cover 52 , which enhances the strength of the overall structure of the sound generating device 10 .
  • the bass unit 40 further includes a passive radiation membrane 46 located between the bass diaphragm 42 and the bottom cover 51 , the passive radiation membrane 46 is arranged corresponding to the bass diaphragm 42 , and the edge of the passive radiation membrane 46 is fixed on the On the second step 522 formed by the side cover 52, the second step 522 is located below the first step 521, and the passive radiation film 46 is spaced apart from the bass diaphragm 42 and the bottom cover 51, respectively.
  • the bass diaphragm 42 vibrates, the bass vibrates.
  • the air pressure generated by the film 42 between the passive radiating films 46 is compressed or expanded.
  • the passive radiating film 46 vibrates, which is convenient for the diffusion of low-frequency signals, which can improve the sense of bass volume, and can also reduce the resonance frequency, resonance The frequency is reduced by about 5% to 8%, which can effectively improve the low frequency performance of the sound generating device 10 .
  • the bottom cover 51 can protect the passive radiation film 46 and prevent the passive radiation diaphragm from being accidentally scratched or collided.
  • the ventilation holes 511 on the bottom cover 51 can dredge the airflow between the passive radiation film 46 and the bottom cover 51 in time to ensure Internal and external air pressure balance.
  • the passive radiating membrane 46 and the bass diaphragm 42 are sequentially fixed to the cover body 50, the second fixing ring 44 is fixed on the upper end of the edge of the bass diaphragm 42, and then the second fixing ring 44 is sequentially fixed on the second fixing ring 44.
  • the washer 45 and the second magnetic steel 41 are used to fix the magnetic yoke 20 on the second magnetic steel 41.
  • the sound-emitting device 10 of this embodiment is not only easy to install, but also has a compact and firm structure.
  • the appearance of the sounding device 10 in this embodiment may be cylindrical, the first magnetic steel 31 is circular, the accommodating portion 21 is a circular groove, the second magnetic steel 41 may be circular, and the spacers are sleeved on The outer circumference of the accommodating portion 21 increases the magnetic flux of the woofer 40 .
  • the sounding device 10 may also be a rectangular body, the first magnetic steel 31 is a rectangular shape, and the second magnetic steel 41 is a rectangular annular structure.
  • the present invention also provides an earphone, which includes the sound producing device 10 as described above. Since the earphone adopts all the technical solutions of the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

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

Abstract

Sont divulgués un dispositif de production de son et un écouteur. Le dispositif de production de son comprend une culasse d'aimant, une unité d'aigus et une unité de graves. La culasse d'aimant comprend une partie logement comprenant une paroi latérale et une paroi inférieure reliées l'une à l'autre de façon à former un espace de logement ; l'unité d'aigus comprend une première partie magnétique, un diaphragme d'aigus et une bobine acoustique d'aigus reliée au diaphragme d'aigus, la première partie magnétique est placée dans l'espace de logement, un intervalle magnétique d'aigus permettant d'insérer la bobine acoustique d'aigus est formé entre la première partie magnétique et la paroi latérale, et le diaphragme d'aigus est un diaphragme métallique plan ; et l'unité de graves comprend une seconde partie magnétique, un diaphragme de graves et une bobine acoustique de graves reliée au diaphragme de graves, un intervalle magnétique de graves permettant d'insérer la bobine acoustique de graves est formé entre la seconde partie magnétique et la paroi latérale, et l'unité de graves et l'unité d'aigus sont disposées de manière coaxiale. La présente invention prend en considération des performances haute fréquence et basse fréquence, et l'unité d'aigus est incorporée dans l'unité de graves, remplaçant directement une partie circuit magnétique central de l'unité de graves, de telle sorte que l'espace occupé du dispositif de production de son dans l'écouteur est réduit tout en fournissant un flux magnétique.
PCT/CN2021/136331 2021-02-02 2021-12-08 Dispositif de production de son et écouteur WO2022166383A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110143280.1A CN112770235A (zh) 2021-02-02 2021-02-02 发声装置和耳机
CN202110143280.1 2021-02-02

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WO2022166383A1 true WO2022166383A1 (fr) 2022-08-11

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112770235A (zh) * 2021-02-02 2021-05-07 歌尔股份有限公司 发声装置和耳机
CN113949973B (zh) * 2021-09-30 2023-10-10 昆山海菲曼科技集团股份有限公司 一种振动特性优化平板耳机
CN114257919A (zh) * 2021-11-29 2022-03-29 歌尔股份有限公司 发声装置和电子设备

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US20110170736A1 (en) * 2010-01-11 2011-07-14 Li lin-zhen Speaker with dual magnetic circuits
CN204316715U (zh) * 2014-07-22 2015-05-06 深圳纽斯声学系统有限公司 双膜对称共振音箱
CN205726386U (zh) * 2016-04-13 2016-11-23 万魔声学科技有限公司 发声装置
CN108600896A (zh) * 2018-07-21 2018-09-28 深圳市蓝禾技术有限公司 扬声器及耳机
CN209787376U (zh) * 2019-07-09 2019-12-13 深圳市华韵鑫电子有限公司 磁感应耳机喇叭及耳机
CN112770235A (zh) * 2021-02-02 2021-05-07 歌尔股份有限公司 发声装置和耳机
CN214481176U (zh) * 2021-02-02 2021-10-22 歌尔股份有限公司 发声装置和耳机

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CN208572425U (zh) * 2018-08-09 2019-03-01 东莞泉声电子有限公司 高音质双音频单元同向出音的发声装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110170736A1 (en) * 2010-01-11 2011-07-14 Li lin-zhen Speaker with dual magnetic circuits
CN204316715U (zh) * 2014-07-22 2015-05-06 深圳纽斯声学系统有限公司 双膜对称共振音箱
CN205726386U (zh) * 2016-04-13 2016-11-23 万魔声学科技有限公司 发声装置
CN108600896A (zh) * 2018-07-21 2018-09-28 深圳市蓝禾技术有限公司 扬声器及耳机
CN209787376U (zh) * 2019-07-09 2019-12-13 深圳市华韵鑫电子有限公司 磁感应耳机喇叭及耳机
CN112770235A (zh) * 2021-02-02 2021-05-07 歌尔股份有限公司 发声装置和耳机
CN214481176U (zh) * 2021-02-02 2021-10-22 歌尔股份有限公司 发声装置和耳机

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