WO2021138952A1 - Enceinte de haut-parleur - Google Patents

Enceinte de haut-parleur Download PDF

Info

Publication number
WO2021138952A1
WO2021138952A1 PCT/CN2020/074333 CN2020074333W WO2021138952A1 WO 2021138952 A1 WO2021138952 A1 WO 2021138952A1 CN 2020074333 W CN2020074333 W CN 2020074333W WO 2021138952 A1 WO2021138952 A1 WO 2021138952A1
Authority
WO
WIPO (PCT)
Prior art keywords
fixed
sound
lower cover
supporting wall
air
Prior art date
Application number
PCT/CN2020/074333
Other languages
English (en)
Chinese (zh)
Inventor
吴军
魏威
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 WO2021138952A1 publication Critical patent/WO2021138952A1/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
    • 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 utility model relates to the technical field of an electro-acoustic conversion device, in particular to a speaker box.
  • the speaker box of the related art includes an upper cover, a lower cover assembled with the upper cover to form an accommodating space, a sounding monomer and a ventilating partition accommodated in the accommodating space; the sounding monomer and the upper cover Enclosed into a front cavity, the sounding monomer, the upper cover and the lower cover jointly enclose a rear cavity, a barrier wall is formed in the rear cavity, and the air-permeable spacer is attached to the barrier wall and is connected to the barrier wall.
  • the blocking wall jointly partitions the rear cavity into a first rear cavity and a second rear cavity that are in air communication with each other, and the sound-producing monomer part is located in the first rear cavity.
  • the barrier wall and the air-permeable partition encapsulate the sound-absorbing particles in the second back cavity to form a DBASS space that serves as a virtual sound cavity.
  • the back cavity cannot be used efficiently due to the design limitation of the barrier wall structure. , Thereby limiting the low-frequency acoustic performance of the speaker box.
  • the purpose of the utility model is to provide a loudspeaker box with high filling efficiency and good low-frequency acoustic performance.
  • the present invention provides a speaker box, which includes a lower cover, an upper cover that is covered on the lower cover and jointly encloses an accommodation space, a sounding unit accommodated in the accommodation space, and an air-permeable isolation Components;
  • the upper cover includes an upper cover body covering the lower cover and a ring-shaped support wall protruding from the upper cover body to the lower cover;
  • the air-permeable isolation assembly is fixed to the
  • the supporting wall is located between the sounding monomer and the lower cover, the air-permeable isolation component and the sounding monomer jointly divide the containing space into a front cavity and a rear cavity, and the sounding monomer has an inner cavity Cavity, the side of the sound-producing monomer close to the rear cavity is provided with a leakage part communicating with the inner cavity
  • the air-permeable isolation assembly includes a ring-shaped bracket and an air-permeable spacer, and the bracket is stacked and fixed to The supporting wall is arranged around the sound emitting unit, the air-per
  • the air-permeable isolator includes a body that is arranged directly opposite to the sound-producing monomer, a ring-shaped extension portion that is bent and extended from the periphery of the body in a direction close to the upper cover, and is formed by the extension portion A fixing portion extending away from the main body is bent outward, and the fixing portion is fixed to an end of the bracket away from the supporting wall.
  • the speaker box further includes a conductive terminal, one end of the conductive terminal is fixed and electrically connected to the sound emitting unit, and the other end extends to the outside of the receiving space through the rear cavity, and the bracket is provided close to it.
  • One side of the supporting wall is recessed in the direction of the lower cover to form a relief groove, and the conductive terminal extends to the rear cavity through the relief groove.
  • the periphery of the vocal unit is fixed to the supporting wall by glue
  • the bracket is fixed to the supporting wall by glue
  • the sound-emitting unit includes a vibration system, a basin frame supporting the vibration system, and a magnetic circuit system fixed to the basin frame
  • the magnetic circuit system includes a magnetic bowl fixed to the basin frame and The magnet part of the magnetic bowl, the magnet part has a magnetic gap
  • the pot frame is fixed to the supporting wall
  • the vibration system includes a diaphragm fixed to the pot frame on the side away from the magnetic bowl, and The diaphragm is fixed and extends to the voice coil of the magnetic gap, and the leakage part is opened in the magnetic bowl.
  • the magnetic bowl includes a bottom plate directly opposite to the vibration system and side plates bent and extended from opposite sides of the bottom plate toward the basin frame, and the leakage portion is formed on two adjacent sides. Between the boards.
  • the vibration system further includes a centering support piece fixed to the side of the voice coil away from the diaphragm, and the centering support piece is fixed to the basin frame on the side away from the voice coil.
  • the centering support piece is located between the two adjacent side plates and is directly opposite to the leakage part.
  • the supporting wall includes a first supporting wall protruding from the upper cover body in the direction of the lower cover and a second supporting wall extending from the outer periphery of the first supporting wall in the direction of the lower cover.
  • the sound-emitting unit is supported and fixed to an end of the first support wall close to the lower cover, and the bracket is supported and fixed to an end of the second support wall close to the lower cover.
  • the diaphragm includes a vibrating portion and a fixing portion extending from the periphery of the vibrating portion and fixed to the basin frame, and the fixing portion includes being sandwiched between the basin frame and the first supporting wall The edge portion and an extension portion bent and extended from the edge portion toward the basin frame, and the extension portion is sandwiched between the basin frame and the second supporting wall.
  • the orthographic projection of the supporting wall on the body at least partially falls into the body.
  • the main body abuts against the sound emitting monomer.
  • the speaker box of the present invention supports and fixes the sounding monomer and the air-permeable isolation component on the supporting wall, and the air-permeable isolation component is located between the sounding monomer and the lower cover.
  • the accommodating space is divided into a front cavity and a back cavity.
  • the sound emitting monomer has an inner cavity.
  • a side of the sound emitting monomer close to the rear cavity is provided with a leakage part communicating with the inner cavity.
  • the inner cavity passes through The leakage part and the air-permeable spacer communicate with the rear cavity.
  • the above-mentioned structure enables the rear cavity of the air-permeable isolating component away from the sound-producing monomer to be filled with sound-absorbing particles as a virtual sound cavity, which greatly improves the performance of the rear cavity.
  • the filling efficiency of sound-absorbing particles effectively improves the low-frequency acoustic performance of the speaker box.
  • Figure 1 is a schematic diagram of the three-dimensional structure of the speaker box of the present invention.
  • Figure 2 is an exploded schematic diagram of a part of the three-dimensional structure of the speaker box of the present invention.
  • Figure 3 is a schematic diagram of the assembly structure of the speaker box of the present invention without the lower cover;
  • Figure 4 is a cross-sectional view taken along line A-A in Figure 1;
  • Fig. 5 is an enlarged view of the part B shown in Fig. 4.
  • the present invention provides a speaker box 100, which includes a lower cover 1, an upper cover 2, a sound-producing monomer 3, a ventilating isolation component 4, and a conductive terminal 5.
  • the lower cover 1 is disposed on the upper cover 2 and jointly encloses a receiving space 10.
  • the sound emitting unit 3 is received in the receiving space 10 and supported by the upper cover 2.
  • the upper cover 2 includes an upper cover body 21 covering the lower cover 1, an annular support wall 22 projecting from the upper cover body 21 in the direction of the lower cover, and The sound guide channel 23 of the upper cover body 21.
  • the supporting wall 22 includes a first supporting wall 221 protruding from the upper cover body 21 toward the lower cover 1, and a first supporting wall 221 extending from the outer periphery of the first supporting wall 221 toward the lower cover 1.
  • the second supporting wall 222 extending in the direction of the cover 1, that is, the first supporting wall 221 and the second supporting wall 222 form a supporting step structure.
  • the sounding monomer 3 is supported and fixed to the supporting wall 22.
  • the periphery of the sound emitting monomer 3 is fixed to the supporting wall 22 by glue.
  • the air-permeable isolation component 4 is fixed to the supporting wall 22 and is located between the sound-producing monomer 3 and the lower cover 1, and the air-permeable isolation component 4 and the sound-producing monomer 3 jointly connect the containing space 10 It is divided into a front chamber 101 and a rear chamber 102.
  • the front cavity 101 is used for sound generation
  • the rear cavity 102 is filled with sound-absorbing particles 7
  • the air-permeable isolation component 4 encapsulates the sound-absorbing particles 7 in the rear cavity 102 to form a DBASS virtual sound cavity for further improving low frequency Acoustic performance.
  • the sound-producing monomer 3 is supported and fixed to an end of the first support wall 221 close to the lower cover 1, that is, supported by the support formed by the first support wall 221 and the second support wall 222
  • the sounding monomer 3 is glued on the periphery to form a fixation.
  • the sounding monomer 3 has an inner cavity 30, and a side of the sounding monomer 3 close to the rear cavity 102 is provided with a leakage portion 300 communicating with the inner cavity 30, and the inner cavity 30 passes through the leakage portion in turn.
  • the portion 300 and the air-permeable isolation component 4 are in communication with the rear cavity 102.
  • the sound emitting unit 3 includes a vibration system 31, a basin frame 32 supporting the vibration system 31, and a magnetic circuit system 33 fixed to the basin frame 32.
  • the magnetic circuit system 33 includes a magnetic bowl 331 fixed to the basin frame 32 and a magnet portion 332 installed on the magnetic bowl 331, and the magnet portion 332 has a magnetic gap 330.
  • the leakage portion 300 is opened in the magnetic bowl 331.
  • the magnetic bowl 331 includes a bottom plate 3311 directly opposite to the vibration system 31 and side plates 3312 bent and extended from opposite sides of the bottom plate 3311 toward the basin frame 32, and the leakage portion 300 It is formed between two adjacent side plates 3312.
  • the basin frame 32 is fixed to the supporting wall 22, specifically, the basin frame 32 is fixed to the first supporting wall 221.
  • the vibration system 31 includes a diaphragm 311 fixed to the side of the basin frame 32 away from the magnetic bowl 331, a voice coil 312 fixed to the diaphragm 311 and extending to the magnetic gap 330, and a voice coil 312 fixed to the voice coil 312 away from it.
  • the diaphragm 311 is spaced from the upper cover body 21 to form a front acoustic cavity 6, and the sound guide channel 23 connects the front acoustic cavity 6 with the outside and forms the front cavity 101 together for forming a side sounding structure.
  • the sound-producing monomer 3, the air-permeable isolation assembly 4, the upper cover 2 and the lower cover 1 jointly enclose the rear cavity 102 for improving low-frequency acoustic performance.
  • the diaphragm 311 includes a vibrating portion 3111 and a fixing portion 3112 extending from the periphery of the vibrating portion 3111 and fixed to the basin frame 32
  • the fixing portion 3112 includes a fixing portion 3112 sandwiched between the basin frame 32 and The edge portion 31121 between the first supporting walls 221 and the extension portion 31122 bent and extended from the edge portion 31121 toward the basin frame 32, the extension portion 31122 is sandwiched between the basin frame 32 and the basin frame 32. Between the second supporting wall 222.
  • the voice coil 312 drives the diaphragm 311 to vibrate and produce sound.
  • the centering support piece 313 is fixed to the basin frame 32 on the side away from the voice coil 312. In this embodiment, the centering support piece 313 is located between the two adjacent side plates 3312 and is directly opposite to the leakage portion 300.
  • the air-permeable isolation assembly 4 includes a ring-shaped bracket 41 and an air-permeable isolation member 42.
  • the bracket 41 is stacked and fixed on the supporting wall 22 and arranged around the sound emitting unit 3.
  • the bracket 41 is fixed to the supporting wall 22 by glue.
  • the bracket 41 is supported and fixed to an end of the second support wall 222 close to the lower cover 1.
  • the glue fixed to the second supporting wall 222 of the bracket 41 and the glue fixed to the first supporting wall 221 of the sound-producing monomer 3 are connected as a whole to form a solidification.
  • the air-permeable spacer 42 is completely covered on the sound emitting monomer 3 and is spaced apart from the lower cover 1, and the periphery of the air-permeable spacer 42 is fixed to the bracket 41.
  • the inner cavity 30 communicates with the rear cavity 102 via the leaking portion 300 and the air-permeable spacer 43 in sequence.
  • the bracket 41 and the air-permeable spacer 42 make the air-permeable spacer element 4 form a three-dimensional structure, so that the rear cavity 102 on the side of the air-permeable spacer element 4 away from the sound-producing monomer 3 is filled with sound-absorbing particles After 7 are all used as a DBASS virtual sound cavity, which effectively improves the low-frequency acoustic performance of the speaker box 100; because the breathable isolation component 4 is placed on the sounding monomer 3, the volume of the rear cavity 102 is greatly increased, thereby effectively improving the rear cavity The filling efficiency of sound-absorbing particles in 102.
  • the air-permeable isolator 42 includes a body 421 that is arranged directly opposite to the sound-producing monomer 3, and a ring-shaped extension 422 that is bent and extended from the periphery of the body 421 in the direction close to the upper cover 2. And a fixing portion 423 bent and extended from one end of the extension portion 422 away from the main body 421 outwardly.
  • the fixing portion 423 is fixed to an end of the bracket 41 away from the supporting wall 22.
  • the periphery of the main body 421 and the supporting wall 22 are arranged directly opposite to each other, that is, the sound emitting monomer 3 is completely covered.
  • the main body 421 abuts against the sound emitting monomer 3, and the structure is arranged to make the volume of the rear cavity 102 as large as possible, that is, the effective utilization rate of the rear cavity 102 is greatly improved, and the filling of the rear cavity 102 is improved. effectiveness.
  • the conductive terminal 5 is fixed and electrically connected with the sounding monomer 3 for introducing external electrical signals to the sounding monomer 3.
  • One end of the conductive terminal 5 is fixed and electrically connected to the sound emitting unit 3, and the other end extends to the outside of the receiving space 10 through the rear cavity 30.
  • the bracket 41 is provided with a relief groove 411 formed by a side of the support wall 22 that is recessed in the direction of the lower cover 1, and the conductive terminal 5 extends through the relief groove 411 To the rear cavity 102.
  • the relief groove 411 needs to form a seal to prevent the sound-absorbing particles 7 from entering the inner cavity 30 and affecting the acoustic performance.
  • the speaker box of the present invention supports and fixes the sounding monomer and the air-permeable isolation component on the supporting wall, and the air-permeable isolation component is located between the sounding monomer and the lower cover.
  • the accommodating space is divided into a front cavity and a rear cavity.
  • the sound emitting monomer has an inner cavity, and a side of the sound emitting monomer close to the rear cavity is provided with a leakage part communicating with the inner cavity, and the inner cavity passes through The leakage part and the air-permeable spacer communicate with the rear cavity.
  • the above-mentioned structure enables the rear cavity of the air-permeable isolating component away from the sound-producing monomer to be filled with sound-absorbing particles as a virtual sound cavity, which greatly improves the performance of the rear cavity.
  • the filling efficiency of sound-absorbing particles effectively improves the low-frequency acoustic performance of the speaker box.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

Le présent modèle d'utilité concerne une enceinte de haut-parleur, comprenant un couvercle inférieur, un couvercle supérieur qui forme un espace de réception avec le couvercle inférieur, une unité de production de son et un ensemble d'isolation perméable à l'air. Le couvercle supérieur est pourvu d'une paroi de support; l'unité de production de son est supportée et fixée sur la paroi de support; l'ensemble d'isolation perméable à l'air est fixé sur la paroi de support et situé entre l'unité de production de son et le couvercle inférieur; l'ensemble d'isolation perméable à l'air et l'unité de production de son séparent ensemble l'espace de réception en une cavité avant et une cavité arrière; l'unité de production de son est pourvue d'une cavité interne et d'une partie de fuite en communication avec la cavité interne; l'ensemble d'isolation respirant comprend un cadre de support annulaire et un élément d'isolation perméable à l'air; le cadre de support est empilé et fixé sur la paroi de support et entoure l'unité de production de son; l'élément d'isolation perméable à l'air est fixé au cadre de support, complètement recouvert par l'unité de production de son, et espacé du couvercle inférieur; la cavité interne est en communication avec la cavité arrière au moyen de la partie de fuite et de l'élément d'isolation perméable à l'air dans l'ordre; la cavité arrière est remplie de particules absorbant le son; et l'ensemble d'isolation perméable à l'air encapsule les particules absorbant le son dans la cavité arrière. Par rapport à l'art antérieur, l'enceinte de haut-parleur du présent modèle d'utilité présente une efficacité de remplissage élevée et une excellente performance acoustique à basse fréquence.
PCT/CN2020/074333 2020-01-09 2020-02-05 Enceinte de haut-parleur WO2021138952A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202020058398.5 2020-01-09
CN202020058398.5U CN211321501U (zh) 2020-01-09 2020-01-09 扬声器箱

Publications (1)

Publication Number Publication Date
WO2021138952A1 true WO2021138952A1 (fr) 2021-07-15

Family

ID=72083036

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/074333 WO2021138952A1 (fr) 2020-01-09 2020-02-05 Enceinte de haut-parleur

Country Status (2)

Country Link
CN (1) CN211321501U (fr)
WO (1) WO2021138952A1 (fr)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112073853B (zh) * 2020-08-27 2021-12-24 瑞声新能源发展(常州)有限公司科教城分公司 发声器件
CN112104932B (zh) * 2020-08-27 2024-07-16 瑞声新能源发展(常州)有限公司科教城分公司 发声器件
CN112104933B (zh) * 2020-08-27 2024-07-16 瑞声新能源发展(常州)有限公司科教城分公司 发声器件
CN112104931B (zh) * 2020-08-27 2021-12-24 瑞声新能源发展(常州)有限公司科教城分公司 扬声器箱
CN112004169B (zh) * 2020-08-27 2022-07-08 瑞声新能源发展(常州)有限公司科教城分公司 扬声器箱
CN112104930B (zh) * 2020-08-27 2022-05-03 瑞声新能源发展(常州)有限公司科教城分公司 扬声器箱
CN112004168B (zh) * 2020-08-27 2021-08-06 瑞声新能源发展(常州)有限公司科教城分公司 扬声器箱
CN114125601B (zh) * 2020-08-27 2023-03-17 瑞声新能源发展(常州)有限公司科教城分公司 扬声器箱
CN112073854B (zh) * 2020-08-27 2024-07-16 瑞声新能源发展(常州)有限公司科教城分公司 发声器件
CN112073849B (zh) * 2020-08-27 2024-06-18 瑞声新能源发展(常州)有限公司科教城分公司 扬声器箱
CN112004170B (zh) * 2020-08-27 2021-08-06 瑞声新能源发展(常州)有限公司科教城分公司 扬声器箱
CN112073850B (zh) * 2020-08-27 2021-12-24 瑞声新能源发展(常州)有限公司科教城分公司 扬声器箱
CN112073852B (zh) * 2020-08-27 2021-11-12 瑞声新能源发展(常州)有限公司科教城分公司 扬声器箱
CN112073855B (zh) * 2020-08-27 2024-06-18 瑞声新能源发展(常州)有限公司科教城分公司 扬声器箱
CN112073847A (zh) * 2020-08-27 2020-12-11 瑞声新能源发展(常州)有限公司科教城分公司 发声器件
CN112153502B (zh) * 2020-08-27 2024-06-18 瑞声新能源发展(常州)有限公司科教城分公司 扬声器箱
CN112153504B (zh) * 2020-08-27 2024-07-16 瑞声新能源发展(常州)有限公司科教城分公司 扬声器箱
CN112153503B (zh) * 2020-08-27 2022-03-25 瑞声新能源发展(常州)有限公司科教城分公司 发声器件
CN112153500B (zh) * 2020-08-27 2022-03-29 瑞声新能源发展(常州)有限公司科教城分公司 扬声器箱
CN214177547U (zh) * 2020-09-29 2021-09-10 瑞声科技(新加坡)有限公司 发声器件
CN112399314B (zh) * 2020-10-30 2022-04-22 歌尔股份有限公司 扬声器模组和电子设备
CN112637753B (zh) * 2020-12-02 2022-09-06 益阳市信维声学科技有限公司 一种扬声器模组的制备方法
CN213906842U (zh) * 2020-12-18 2021-08-06 瑞声新能源发展(常州)有限公司科教城分公司 扬声器箱
CN213906845U (zh) * 2020-12-18 2021-08-06 瑞声光电科技(常州)有限公司 扬声器箱
CN214799871U (zh) * 2021-06-10 2021-11-19 歌尔股份有限公司 发声器件和电子设备
CN113473276B (zh) * 2021-06-30 2024-05-31 歌尔股份有限公司 扬声器模组和电子设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170359649A1 (en) * 2016-06-09 2017-12-14 Em-Tech. Co., Ltd. Microspeaker Enclosure with Porous Materials in Resonance Space
CN108235198A (zh) * 2018-02-24 2018-06-29 歌尔股份有限公司 一种扬声器模组及电子设备
CN208572318U (zh) * 2018-05-09 2019-03-01 瑞声精密电子沭阳有限公司 扬声器箱
CN109714676A (zh) * 2018-12-31 2019-05-03 瑞声声学科技(深圳)有限公司 扬声器箱

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170359649A1 (en) * 2016-06-09 2017-12-14 Em-Tech. Co., Ltd. Microspeaker Enclosure with Porous Materials in Resonance Space
CN108235198A (zh) * 2018-02-24 2018-06-29 歌尔股份有限公司 一种扬声器模组及电子设备
CN208572318U (zh) * 2018-05-09 2019-03-01 瑞声精密电子沭阳有限公司 扬声器箱
CN109714676A (zh) * 2018-12-31 2019-05-03 瑞声声学科技(深圳)有限公司 扬声器箱

Also Published As

Publication number Publication date
CN211321501U (zh) 2020-08-21

Similar Documents

Publication Publication Date Title
WO2021138952A1 (fr) Enceinte de haut-parleur
WO2021164080A1 (fr) Caisson de haut-parleur
CN211321500U (zh) 扬声器箱
WO2021138950A1 (fr) Enceinte de haut-parleur
WO2021174572A1 (fr) Enceinte de haut-parleur
WO2020228341A1 (fr) Dispositif de génération de son
CN103686550A (zh) 扬声器模组
WO2021174570A1 (fr) Caisson de haut-parleur
WO2021138953A1 (fr) Enceinte de haut-parleur
WO2019161704A1 (fr) Générateur acoustique
WO2020103589A1 (fr) Boîtier de haut-parleur
WO2020140548A1 (fr) Dispositif de génération de son et appareil électronique
WO2021138951A1 (fr) Enceinte de haut-parleur
CN110198509A (zh) 发声器及电子产品
WO2021253538A1 (fr) Enceinte de haut-parleur
WO2022041438A1 (fr) Caisson de haut-parleur
US10932047B2 (en) Sound generator
WO2021253464A1 (fr) Enceinte de haut-parleur
WO2021237833A1 (fr) Dispositif de génération de son
CN217470277U (zh) 发声装置和终端设备
WO2020134341A1 (fr) Terminal mobile
WO2021000155A1 (fr) Caisson de haut-parleur
WO2022007023A1 (fr) Boîtier de haut-parleur
CN212628370U (zh) 发声器件
WO2022007025A1 (fr) Boîtier de haut-parleur

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20911394

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20911394

Country of ref document: EP

Kind code of ref document: A1