WO2021174568A1 - Haut-parleur - Google Patents

Haut-parleur Download PDF

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Publication number
WO2021174568A1
WO2021174568A1 PCT/CN2020/078759 CN2020078759W WO2021174568A1 WO 2021174568 A1 WO2021174568 A1 WO 2021174568A1 CN 2020078759 W CN2020078759 W CN 2020078759W WO 2021174568 A1 WO2021174568 A1 WO 2021174568A1
Authority
WO
WIPO (PCT)
Prior art keywords
diaphragm
frame
sound
cavity
vibration
Prior art date
Application number
PCT/CN2020/078759
Other languages
English (en)
Chinese (zh)
Inventor
令狐荣林
肖波
章统
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)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 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2021174568A1 publication Critical patent/WO2021174568A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • 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
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
    • 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 field of sound and electricity, in particular to a speaker used in portable electronic products.
  • the loudspeaker includes a box body with a containing cavity and a sound device arranged in the box body, and a sound hole is penetrated through the box body.
  • the sound emitting device in the related art only has one sound emitting surface, which is not conducive to improving the sensitivity of the speaker.
  • the object of the present invention is to provide a speaker, which can increase the effective vibration area, thereby improving the sensitivity of the speaker.
  • the present invention provides a loudspeaker including a vibration system and a magnetic circuit system for driving the vibration system to vibrate and produce sound.
  • a voice coil that drives the diaphragm to vibrate and produce sound in the gap the speaker further includes a housing that accommodates and holds the vibration system and the magnetic circuit system, and the diaphragm includes an upper diaphragm and a middle vibration that are arranged at intervals in sequence.
  • the outer edges of the upper diaphragm, the middle diaphragm, and the lower diaphragm are fixed on the housing, and the middle diaphragm and the lower diaphragm surround the magnetic circuit system
  • the vibration system further includes an upper frame connected to the upper diaphragm and a lower frame arranged around the magnetic circuit system, and the inner edge of the middle diaphragm is sandwiched between the upper frame and the lower frame In between, the inner edge of the lower diaphragm is fixed on the lower frame, wherein the housing has a housing space and a sound guide channel, and the housing space is covered by the upper diaphragm, the middle diaphragm,
  • the lower diaphragm and the lower frame are separated into an upper diaphragm front cavity for the upper diaphragm to sound, a lower diaphragm front cavity for the lower diaphragm to sound, and the upper diaphragm and the lower diaphragm
  • the housing includes a front cover, a middle frame and a back cover, the upper diaphragm is sandwiched between the front cover and the middle frame, and the outer edge of the lower diaphragm is sandwiched between the middle frame.
  • the middle frame is provided with a partition board surrounding the magnetic circuit system, and the outer edge of the middle diaphragm is fixed on the partition board, wherein the upper vibration
  • the membrane and the front cover are enclosed to form the upper membrane anterior cavity
  • the middle diaphragm, the lower diaphragm, the lower frame and the middle frame are enclosed to form the inferior membrane anterior cavity
  • the outlet The sound channel is arranged on the front cover.
  • the front cover is provided with an upper sound guide hole communicating with the upper membrane anterior cavity
  • the middle frame is provided with a lower sound guide hole communicating with the inferior membrane anterior cavity.
  • An auxiliary shell is provided on the outside of the frame, and the auxiliary shell is enclosed with the middle frame and the front cover to form a sound guide cavity that communicates the upper sound guide hole and the lower sound guide hole, wherein the upper sound guide hole , The lower sound guide hole and the sound guide cavity constitute the sound guide channel.
  • the upper frame includes a first connecting portion connected with the upper diaphragm, a second connecting portion connected with the first connecting portion and arranged around the magnetic circuit system, and the inner portion of the middle diaphragm The edge is sandwiched between the second connecting portion and the lower frame, and the second connecting portion is provided with a leakage hole through it.
  • the upper frame further includes a third connecting portion connected with the voice coil and a plurality of connecting ribs connecting the second connecting portion and the third connecting portion, and the magnetic circuit system also has a shelter The avoidance groove of the connecting rib.
  • the side of the magnetic circuit system facing the upper diaphragm is connected to the upper diaphragm.
  • the upper diaphragm has a cut hole, and a splint covering the cut hole is fixed on the inner periphery of the upper diaphragm.
  • the magnetic circuit system includes a yoke fixed on the back cover, a main magnetic part and a plurality of auxiliary magnetic parts fixed on the yoke, and the plurality of auxiliary magnetic parts are connected to the main magnetic part.
  • the magnetic parts are arranged at intervals to form the magnetic gap, and the escape groove is formed between the adjacent secondary magnetic parts.
  • the clamping plate is fixed on the main magnetic part and the secondary magnetic part, and the inner periphery of the upper diaphragm is fixed on the side of the clamping plate away from the magnetic circuit system.
  • the clamping plate is fixed on the main magnetic part, and the inner periphery of the upper diaphragm is fixed between the clamping plate and the secondary magnetic part.
  • the splint is a splint made of a magnetically conductive material.
  • the main magnetic part includes first and second magnets arranged at intervals, and a main pole core sandwiched between the first magnet and the second magnet, and the secondary magnetic part includes spaced apart The third magnet and the fourth magnet and the secondary pole core sandwiched between the third magnet and the fourth magnet, wherein the main pole core and the secondary pole core are located on the same horizontal plane.
  • the upper diaphragm includes a first diaphragm body, a second diaphragm body arranged around the first diaphragm body, and a spherical top connecting the first diaphragm body and the second diaphragm body.
  • the inner periphery of the membrane body encloses the cut hole, the outer periphery of the second membrane body is sandwiched between the front cover and the middle frame, and the first connecting portion is connected to the dome.
  • the lower diaphragm includes a diaphragm body and a reinforcing plate, the outer periphery of the diaphragm body is sandwiched between the middle frame and the back cover, and opposite sides of the reinforcing plate are connected to the diaphragm respectively.
  • the inner periphery of the main body is connected to the lower frame, or the opposite sides of the inner periphery of the membrane body are respectively connected to the reinforcing plate and the lower frame.
  • the speaker of the present invention produces sound through the upper diaphragm and the lower diaphragm, and the sound wave generated by the upper diaphragm is radiated to the all through the front cavity of the upper diaphragm and the sound output channel.
  • the sound waves generated by the vibration of the lower diaphragm sequentially radiate to the outside of the speaker through the lower diaphragm front cavity, the sound guide channel, the upper diaphragm front cavity and the sound outlet channel, so that all The effective vibration area of the speaker is greatly increased to improve the sensitivity of the speaker; at the same time, the middle diaphragm can completely separate the front cavity and the back cavity of the submembrane, thereby avoiding the communication between the back cavity and the front cavity of the submembrane.
  • the upper diaphragm, the lower diaphragm, and the middle diaphragm can also limit the movement of the voice coil in the non-vibrating direction, so that the anti-sway ability of the product is greatly improved, Thereby, the performance of the product can be improved, especially for loudspeakers with large amplitude, the effect is more obvious.
  • Figure 1 is a perspective view of a preferred embodiment of the speaker of the present invention
  • Figure 2 is an exploded view of the speaker shown in Figure 1;
  • Figure 3 is a cross-sectional view of the loudspeaker shown in Figure 1 along the A-A direction;
  • Figure 4 is a cross-sectional view of the loudspeaker shown in Figure 1 along the B-B direction;
  • Figure 5 is a cross-sectional view of the loudspeaker shown in Figure 1 along the C-C direction;
  • FIG. 6 is a schematic diagram of the structure of the skeleton in the speaker shown in FIG. 2.
  • the speaker 100 includes a housing 1, a vibration system 3, and a magnetic circuit system 5 with a magnetic gap 5A.
  • the housing 1 accommodates and holds the vibration system 3 and the magnetic circuit system 5, and the magnetic circuit system 5 drives the vibration system 3 to vibrate and produce sound.
  • the housing 1 has an accommodation space 1a and a sound guide channel 1b.
  • the accommodation space 1a is divided into an upper anterior cavity 11a, an inferior anterior cavity 13a and a posterior cavity 15a by the vibration system 3, and the sound guide channel 1b is in communication with each other
  • the housing 1 is provided with a sound channel 1c communicating with the upper anterior cavity 11a.
  • the sound channel 1c is used for the loudspeaker 100 to sound outward.
  • the arrangement of the sound channel 1c makes the speaker 100 easy to install on mobile terminal devices such as mobile phones.
  • the housing 1 includes a front cover 11, a middle frame 13, and a rear cover 15.
  • the front cover 11 is provided with an upper sound guide hole 11b
  • the middle frame 13 is provided with a lower sound guide hole 13b.
  • the frame 11 is provided with a partition plate 17 surrounding the magnetic circuit system 5, and an auxiliary shell 19 is provided on the outside of the middle frame 13, and the auxiliary shell 19 is formed by enclosing the middle frame 13 and the front cover 11
  • a sound guide cavity 15b connecting the upper sound guide hole 11b and the lower sound guide hole 13b, and the sound channel 1c is provided on the front cover 11.
  • the upper sound guide hole 11b, the lower sound guide hole 13b, and the sound guide cavity 15b constitute the sound guide channel 1b.
  • the upper sound guide hole 11 b and the lower sound guide hole 13 b are located on the same side, and the partition plate 17 and the middle frame 13 are integrally formed.
  • the vibration system 3 includes a diaphragm 31, a voice coil 33 inserted into the magnetic gap 5A and driving the diaphragm 31 to vibrate and produce sound, an upper frame 34, and a lower frame 35 arranged around the magnetic circuit system 5.
  • the diaphragm 31 includes an upper diaphragm 36, a middle diaphragm 38, and a lower diaphragm 37 arranged at intervals in sequence.
  • the outer edges of the upper diaphragm 36, the middle diaphragm 38, and the lower diaphragm 37 are fixed to On the housing 1, the middle diaphragm 38 and the lower diaphragm 37 are arranged around the magnetic circuit system 5, the upper diaphragm 37 is connected to the upper frame 34, and the inner portion of the middle diaphragm 38 The edge is sandwiched between the upper frame 34 and the lower frame 37, and the inner edge of the lower diaphragm 37 is fixed on the lower frame 35.
  • the accommodating space 1a is separated by the upper diaphragm 36, the middle diaphragm 38, the lower diaphragm 37, and the lower skeleton 35 into the upper anterior cavity 11a, the inferior anterior cavity 13a, and
  • the rear cavity 15a (specifically, the surface of the upper diaphragm 36 on the side facing away from the middle diaphragm 38 and the front cover 11 of the housing 1 are enclosed to form the upper diaphragm front cavity 11a,
  • the surface of the middle diaphragm 38 facing the lower diaphragm 37, the surface of the lower diaphragm 37 facing the middle diaphragm 38, the lower frame 35 and the middle frame 15 of the housing 1 are enclosed to form a place
  • the acoustic space of the accommodating space 1a except for the superior anterior cavity 11a and the inferior anterior cavity 13a is the posterior cavity 15a).
  • the upper diaphragm front cavity 11a is used for the upper diaphragm 36 to emit sound
  • the lower diaphragm front cavity 13a is used for the lower diaphragm 37 to emit sound
  • the upper diaphragm 36 and the lower diaphragm 37 are shared The rear cavity 15a.
  • the sound waves generated by the vibration of the upper diaphragm 36 are radiated to the outside of the speaker 100 through the upper diaphragm front cavity 11a and the sound channel 1c, and the sound waves generated by the vibration of the lower diaphragm 37 sequentially pass through the lower diaphragm.
  • the front cavity 13a, the sound guide channel 1b, the upper membrane front cavity 11a, and the sound channel 1c radiate to the outside of the speaker 100, so that the effective vibration area of the speaker 100 is greatly increased to improve the sensitivity of the speaker
  • the middle diaphragm 38 can completely separate the anterior inferior cavity 13a and the posterior cavity 15a, thereby avoiding the problem of acoustic short circuit caused by the communication between the posterior cavity 15a and the anterior inferior cavity 13a .
  • the upper diaphragm 36, the lower diaphragm 37, and the middle diaphragm 38 can also restrict the movement of the voice coil 33 in the non-vibrating direction, so that the anti-sway ability of the product is greatly improved, thereby Can improve the performance of the product, especially for loudspeakers with large amplitude, the effect is more obvious.
  • the outer edge of the upper diaphragm 36 is sandwiched between the front cover 11 and the middle frame 13, and the outer edge of the lower diaphragm 37 is sandwiched between the middle frame. Between the frame 13 and the back cover 15, the outer edge of the middle diaphragm 38 is fixed on the partition 17.
  • the upper frame 34 includes a first connecting portion 341 connected to the upper diaphragm 36 and a second connecting portion 343 connected to the first connecting portion 341 and arranged around the magnetic circuit system 5.
  • the inner edge of the membrane 38 is sandwiched between the second connecting portion 343 and the lower frame 35, and the second connecting portion 343 is provided with a leakage hole 34A therethrough.
  • the upper frame 34 further includes a third connecting portion 345 connected to the voice coil 33 and a plurality of connecting ribs 347 connecting the second connecting portion 343 and the third connecting portion 345, so
  • the magnetic circuit system 5 also has an avoiding groove 5B for avoiding the connecting rib 347.
  • the side of the magnetic circuit system 5 facing the upper diaphragm 36 is connected to the upper diaphragm 36.
  • BL value force-electric coupling coefficient
  • the upper diaphragm 36 has a cut hole 36A, and the inner periphery of the upper diaphragm 36A is fixedly provided with a splint 36B covering the cut hole 36A.
  • the upper diaphragm 36 includes a first diaphragm 361, a second diaphragm 363 disposed around the first diaphragm 361, and a connection between the first diaphragm 361 and the first diaphragm 361.
  • the lower diaphragm 37 includes a diaphragm body 371 and a reinforcing plate 373.
  • the outer periphery of the diaphragm body 371 is sandwiched between the middle frame 11 and the rear Between the covers 15, opposite sides of the reinforcing plate 373 are respectively connected to the inner periphery of the membrane body 371 and the lower frame 35. It can be understood that the arrangement of the lower diaphragm 37 is not limited to this.
  • the lower diaphragm 37 may also be arranged such that the opposite sides of the inner periphery of the diaphragm body 371 are connected to the reinforcing
  • the plate 373 is connected to the lower frame 35, or the lower diaphragm 37 does not include a reinforcing plate, and the inner periphery of the diaphragm body 371 is directly connected to the lower frame 35.
  • the magnetic circuit system 5 includes a yoke 51 fixed on the back cover 15 and a main magnetic part 53 and a plurality of auxiliary magnetic parts 55 fixed on the yoke 51, and a plurality of the auxiliary magnetic parts 55
  • the magnetic gap 5A is formed spaced apart from the main magnetic portion 53, and the escape groove 5B is formed between the adjacent secondary magnetic portions 55.
  • the clamping plate 36B is fixed on the main magnetic part 53, and the inner periphery of the upper diaphragm 36 is fixed between the clamping plate 36B and the secondary magnetic part 55. It is understandable that in other embodiments, the clamping plate 36B is fixed on the main magnetic portion 53 and the secondary magnetic portion 55, and the inner periphery of the upper diaphragm 36 is fixed on the clamping plate 36B away from The magnetic circuit system 5 is on one side.
  • the secondary magnetic portion 55 is provided with four secondary magnetic portions, which are two first secondary magnetic portions spaced apart along the short axis side of the main magnetic portion 53 and the length of the main magnetic portion 53.
  • Two second secondary magnetic parts are arranged at intervals on the side of the axis, the escape groove 5B is formed between the first secondary magnetic part and the second secondary magnetic part (that is, the escape groove 5B and the connecting rib are both provided There are four).
  • the plurality of secondary magnetic parts 55 can also be replaced with secondary magnetic parts in a ring structure, and the secondary magnetic part of the ring-shaped avoidance groove 5B faces the diaphragm.
  • the surface on one side is recessed in the direction of the yoke 51.
  • the main magnetic part 53 includes a first magnet 531 and a second magnet 533 arranged at intervals, and a main pole core 535 sandwiched between the first magnet 531 and the second magnet 533.
  • the secondary magnet part 55 includes a third magnet 551 and a fourth magnet 553 arranged at intervals, and a secondary pole core 555 sandwiched between the third magnet 551 and the fourth magnet 553. As shown in FIG. 4, the secondary pole core 555 and the main pole core 535 are located on the same horizontal plane.
  • the yoke 51, the clamping plate 36B, the main pole core 535, and the secondary pole core 555 are made of magnetically conductive materials. Through the magnetic permeability of the yoke 51, the clamping plate 36B, the main pole core 535, and the secondary pole core 555, the magnetic flux in the magnetic gap 5A can be effectively increased, so that the sensitivity of the speaker 100 can be improved.
  • the first magnet 531, the second magnet 533, the third magnet 551, and the fourth magnet 553 are all magnetic steel. It is understandable that the first magnet 531, the second magnet 533, the third magnet 551, and the fourth magnet 553 may also be natural magnets.
  • the upper frame 34 may not include the third connecting portion 345 and the connecting rib 347, and the voice coil 33 is directly connected to the upper diaphragm 36, and The above-mentioned diaphragm 36 and the magnetic circuit system 5 are spaced apart so as to reserve sufficient vibration space for the upper diaphragm 36. Accordingly, the magnetic circuit system 5 may not be provided with the avoiding groove.
  • the speaker of the present invention produces sound through the vibration of the upper diaphragm 36 and the lower diaphragm 37, and the sound waves generated by the vibration of the upper diaphragm 36 pass through the upper diaphragm front cavity 11a and the output
  • the sound channel 1c radiates to the outside of the speaker 100, and the sound waves generated by the vibration of the lower diaphragm 37 sequentially pass through the lower diaphragm front cavity 13a, the sound guide channel 1b, the upper diaphragm front cavity 11a, and the sound output
  • the channel 1c radiates to the outside of the loudspeaker 100, so that the effective vibration area of the loudspeaker 100 is greatly increased to improve the sensitivity of the loudspeaker; at the same time, the middle diaphragm 38 can completely separate the front cavity 13a and the rear cavity 15a of the submembrane.
  • the upper diaphragm 36, the lower diaphragm 37 and the middle diaphragm 38 can also be aligned with each other.
  • the movement of the voice coil 33 in the non-vibrating direction is restricted, so that the anti-sway ability of the product is greatly improved, which can improve the performance of the product, especially for a loudspeaker with a large amplitude, the effect is more obvious.

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

Abstract

La présente invention concerne un haut-parleur capable d'augmenter une zone de vibration efficace. Le haut-parleur comprend un boîtier, un système de vibration et un système de circuit magnétique. Le système de vibration comprend une membrane de vibration, une bobine acoustique pour mettre en vibration la membrane vibrante et produire un son, un cadre supérieur et un cadre inférieur ; la membrane vibrante comprend une membrane vibrante supérieure, une membrane vibrante intermédiaire et une membrane vibrante vibration inférieure ; et les bords externes de la membrane vibrante supérieure, de la membrane vibrante intermédiaire et de la membrane vibrante inférieure sont fixés sur le boîtier, et la membrane vibrante intermédiaire et la membrane vibrante inférieure sont disposées autour du système de circuit magnétique. Le système de vibration comprend en outre le cadre supérieur relié à la membrane vibrante supérieure et au cadre inférieur disposé autour du système de circuit magnétique ; le bord interne de la membrane vibrante intermédiaire est serré entre le cadre supérieur et le cadre inférieur, le bord interne de la membrane vibrante inférieure est disposé de manière fixe sur le cadre inférieur. Le boîtier est pourvu d'un espace de réception et d'un canal de guidage de son ; et l'espace de réception est divisé, au moyen de la membrane vibrante supérieure, de la membrane vibrante intermédiaire, de la membrane vibrante inférieure et du cadre inférieur, dans une cavité avant de la membrane inférieure pour que la membrane vibrante inférieure produise un son et une cavité arrière partagée par la membrane vibrante supérieure et la membrane vibrante inférieure. Le canal de guidage de son est en communication avec une cavité avant de membrane supérieure et la cavité avant de membrane inférieure ; et le boîtier est pourvu d'un canal de sortie de son en communication avec la cavité avant de membrane supérieure.
PCT/CN2020/078759 2020-03-05 2020-03-11 Haut-parleur WO2021174568A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010148053.3A CN111131976B (zh) 2020-03-05 2020-03-05 扬声器
CN202010148053.3 2020-03-05

Publications (1)

Publication Number Publication Date
WO2021174568A1 true WO2021174568A1 (fr) 2021-09-10

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ID=70493532

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/078759 WO2021174568A1 (fr) 2020-03-05 2020-03-11 Haut-parleur

Country Status (2)

Country Link
CN (1) CN111131976B (fr)
WO (1) WO2021174568A1 (fr)

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CN111641903B (zh) * 2020-05-20 2021-12-21 瑞声科技(新加坡)有限公司 一种发声器件
CN212034341U (zh) * 2020-05-20 2020-11-27 瑞声光电科技(常州)有限公司 一种扬声器
CN212034339U (zh) * 2020-05-20 2020-11-27 瑞声光电科技(常州)有限公司 一种扬声器
CN111901732B (zh) * 2020-06-24 2021-04-27 瑞声科技(新加坡)有限公司 一种扬声器
CN111836175B (zh) * 2020-06-24 2021-09-28 瑞声科技(新加坡)有限公司 微型扬声器
CN111935608B (zh) * 2020-06-30 2022-03-01 瑞声新能源发展(常州)有限公司科教城分公司 一种扬声器
CN111787468A (zh) * 2020-07-09 2020-10-16 瑞声科技(新加坡)有限公司 一种扬声器
WO2022006807A1 (fr) * 2020-07-09 2022-01-13 瑞声声学科技(深圳)有限公司 Haut-parleur
CN112383854B (zh) * 2020-11-30 2022-05-03 瑞声新能源发展(常州)有限公司科教城分公司 发声装置
CN112752206A (zh) * 2020-12-25 2021-05-04 瑞声新能源发展(常州)有限公司科教城分公司 扬声器
CN114866924A (zh) * 2022-05-07 2022-08-05 歌尔股份有限公司 发声装置和电子终端

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CN114630249B (zh) * 2022-04-26 2024-04-30 歌尔股份有限公司 发声模组和电子设备

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