WO2020103301A1 - Module de haut-parleur - Google Patents

Module de haut-parleur

Info

Publication number
WO2020103301A1
WO2020103301A1 PCT/CN2018/125558 CN2018125558W WO2020103301A1 WO 2020103301 A1 WO2020103301 A1 WO 2020103301A1 CN 2018125558 W CN2018125558 W CN 2018125558W WO 2020103301 A1 WO2020103301 A1 WO 2020103301A1
Authority
WO
WIPO (PCT)
Prior art keywords
cavity
speaker module
partition
shell
sound
Prior art date
Application number
PCT/CN2018/125558
Other languages
English (en)
Chinese (zh)
Inventor
谭飞
陈国强
冯新涛
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 WO2020103301A1 publication Critical patent/WO2020103301A1/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
    • 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
    • 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
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the invention relates to the technical field of sound energy conversion, in particular to a speaker module.
  • the speaker module belongs to an important acoustic component of electronic equipment and is used to complete the conversion between electrical signals and sound signals.
  • the speaker module includes an outer shell, and a speaker monomer is contained in the outer shell.
  • the speaker monomer separates the entire cavity of the module into a front acoustic cavity and a rear acoustic cavity.
  • the rear sound cavity will be filled with sound absorbing particles, and in order to prevent the sound absorbing particles from entering the speaker monomer, a partition is provided in the rear sound cavity to isolate the sound absorbing particles from the speaker monomer.
  • a clamping wall is provided on the inner surface of the module housing, and the partition is clamped and fixed by the clamping wall, but in order to ensure that the partition is effectively fixed, the protrusion height of the clamping wall on the inner surface of the housing is generally relatively small Large, which results in too much occupation of the internal space of the rear acoustic cavity, so the rear acoustic cavity can only be filled with less sound absorbing particles, so that the sound absorbing particles have a poor effect on improving the acoustic performance of the module.
  • the main purpose of the present invention is to propose a speaker module aimed at making full use of the space of the rear acoustic cavity to improve the acoustic performance of the module.
  • the speaker module proposed by the present invention includes:
  • the outer shell includes an upper shell and a lower shell, the upper shell and the lower shell are enclosed to form a receiving cavity, and the inner wall of the upper shell is provided with a slot;
  • a loudspeaker monomer is provided in the receiving cavity, the loudspeaker monomer and the upper casing together form a front acoustic cavity, and the loudspeaker monomer, the lower casing and the upper casing together form a rear acoustic cavity,
  • a sound hole is provided on the housing, and the front sound cavity communicates with the sound hole;
  • a baffle is provided in the rear acoustic cavity, and the rear acoustic cavity is partitioned into a first rear cavity and a second rear cavity, the partition and the lower shell are integrally injection molded, and the partition and the The slot is plugged in, the speaker unit is located in the first back cavity, and the second back cavity is filled with sound absorbing particles.
  • the upper shell includes a bottom wall and a peripheral wall
  • the bottom wall is disposed opposite to the lower shell
  • the peripheral wall surrounds the peripheral edge of the bottom wall
  • the lower housing cover is disposed on the peripheral wall
  • the slot includes portions on two opposite wall surfaces of the peripheral wall.
  • the slot further includes a portion located on the bottom wall.
  • the lower case is provided with a filling hole
  • the speaker module further includes a cover plate, the cover plate covers the filling hole, and the cover plate is detachably connected to the lower case .
  • the partition plate is provided with a communication hole
  • the speaker module further includes a mesh cloth, the mesh cloth is fixed to the partition plate, and is covered with the communication hole and provided.
  • the mesh cloth and the separator are integrally injection molded.
  • a hot-melt part is provided on the partition, and the mesh cloth and the partition are fixed by the hot-melt part.
  • the mesh cloth is bonded and fixed to the separator.
  • the mesh cloth is located on a side of the partition facing the first rear cavity.
  • the partition plate is provided with a plurality of breathable mesh holes so that the partition plate is arranged in a mesh shape.
  • the rear acoustic cavity of the speaker module is divided into a first rear cavity and a second rear cavity by providing a partition plate, and the sound absorbing particles are directly filled into the second rear cavity. Ensuring that the sound-absorbing particles are filled in all corners of the second rear cavity can greatly increase the number of sound-absorbing particles and enhance the sound-absorbing effect.
  • the second back cavity is isolated from the first back cavity by a partition, and the partition blocks the sound absorbing particles in the second back cavity to prevent the sound absorbing particles from entering the first back cavity and then entering the speaker unit.
  • the separator that plays the role of isolation is integrally formed with the lower shell, compared with the separation of the separator and the lower shell, the integral molding method is formed by the mold at one time, eliminating the subsequent assembly process and simplifying Speaker module installation procedure.
  • the baffle for the separate arrangement of the baffle and the lower shell, in some examples, two clamping walls are provided on the inner surface of the lower shell to clamp the baffle, and the space in the rear acoustic cavity is reduced due to the installation of the clamping wall Therefore, the filling space of the sound-absorbing particles is reduced, and the integrated molding method can reduce or even eliminate the setting of the clamping wall, thereby greatly reducing the occupation of the space of the rear acoustic cavity and increasing the filling space of the sound-absorbing particles. Furthermore, by providing a slot for the partition board to be plugged in, it can play a limiting role on the partition board, avoid the deviation of the partition board, and can play a better isolation effect.
  • FIG. 1 is a schematic structural diagram of an embodiment of a speaker module of the present invention
  • FIG. 2 is a schematic cross-sectional view of the speaker module in FIG. 1 taken along line A-A;
  • FIG. 3 is an exploded schematic view of the speaker module in FIG. 1;
  • FIG. 4 is a schematic structural view of the lower shell in FIG. 3;
  • FIG. 5 is a schematic structural view of the upper shell in FIG. 3.
  • Label name Label name 10 shell 131 Anterior acoustic cavity 11 Upper shell 132 Rear acoustic cavity 111 Clamping wall 1321 First back cavity 112 Slot 1322 Second back cavity 113 Sound hole 20 Speaker unit 114 Bottom wall 30 Isolation parts 115 Zhou Bi 31 Clapboard 12 Lower shell 311 Via 121 Cover 312 Reinforcement 122 Filling hole 32 net 13 Containment cavity A A
  • the directional indicator is only used to explain a specific posture (as shown in the drawings) The relative positional relationship, movements, etc. of the components below, if the specific posture changes, then the directional indication changes accordingly.
  • first”, “second”, etc. are for descriptive purposes only, and cannot be understood as instructions or hints Its relative importance or implicitly indicates the number of technical features indicated.
  • the features defined with “first” and “second” may include at least one of the features either explicitly or implicitly.
  • the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of those skilled in the art to realize. When the combination of technical solutions contradicts or cannot be realized, it should be considered that the combination of such technical solutions does not exist , Nor within the protection scope claimed by the present invention.
  • the present invention proposes a speaker module, which can be used in devices capable of producing sound, such as headphones and mobile phones.
  • the speaker module includes a housing 10 and a speaker unit 20, a housing cavity 13 is formed in the housing 10, and the housing 10 is provided with a sound hole 113 communicating with the housing cavity 13, the speaker unit 20 It is provided in the accommodating cavity 13, and the accommodating cavity 13 is partitioned into a front acoustic cavity 131 and a rear acoustic cavity 132, and a sound outlet 113 is provided in the front acoustic cavity 131.
  • the speaker unit 20 includes a vibration system and a magnetic circuit system.
  • the vibration system includes a diaphragm and a voice coil fixed to one side of the diaphragm.
  • the diaphragm includes a central portion, a folded ring portion disposed around the central portion, and a folded
  • the fixing portion provided in the ring portion and the diaphragm may further include a composite layer bonded to the central portion.
  • the magnetic circuit system includes a magnetic yoke, and the magnetic yoke is provided with an inner magnetic circuit part and an outer magnetic circuit part, and a magnetic gap containing a voice coil is formed between the two.
  • the inner magnetic circuit part includes a central magnet provided at the center of the magnetic yoke and a central magnetic plate provided on the central magnet
  • the outer magnetic circuit part includes an edge provided at the edge of the magnetic yoke The magnet and the side magnetic guide plate provided on the side magnet.
  • the speaker unit 20 may further include an auxiliary system, which includes a housing for accommodating the fixed vibration system and the magnetic circuit system.
  • the auxiliary system may further include a front cover, the front cover is combined with the housing, and the front cover and the housing surround the protective frame of the speaker unit 20.
  • the speaker unit 20 may not include the auxiliary system.
  • the speaker module further includes a partition 31 that partitions the rear acoustic cavity 132 into a first rear cavity 1321 and a second rear cavity 1322.
  • the partition 31 and the housing 10 are integrally injection molded. It is conceivable that since the first rear cavity 1321 and the second rear cavity 1322 are in communication, a through hole is provided in the partition plate 31 to play a communication role.
  • the speaker unit 20 is located in the first back cavity 1321, the second back cavity 1322 is filled with sound absorbing particles, and the partition 31 encapsulates the sound absorbing particles in the second back cavity 1322, thereby preventing the sound absorbing particles from entering the first back cavity 1321.
  • the sound-absorbing particles are a mixture of one or more of natural zeolite powder, white carbon black, activated carbon, etc.
  • the sound-absorbing particles can also be made of other materials as long as they can provide a sound-absorbing effect.
  • the rear acoustic cavity 132 of the speaker module is divided into a first rear cavity 1321 and a second rear cavity 1322 by providing a partition 31, and the sound absorbing particles are directly filled into the second rear cavity 1322 without passing through the sound absorbing particles It is encapsulated separately, so that it can ensure that the sound absorbing particles are filled into all corners of the second rear cavity 1322, which can greatly increase the number of sound absorbing particles and enhance the sound absorbing effect.
  • the second rear cavity 1322 is isolated from the first rear cavity 1321 by a partition 31, and the partition 31 blocks the sound absorbing particles in the second rear cavity 1322, which can prevent the sound absorbing particles from entering the first rear cavity 1321 and then entering the speaker monomer 20.
  • the partition plate 31 with isolation function is integrally formed with the casing 10, compared with the separate arrangement of the partition plate 31 and the casing 10, the integral molding method is formed by a mold at a time, eliminating the subsequent assembly process, The installation procedure of the speaker module is simplified.
  • two clamping walls are provided on the inner surface of the housing 10 to clamp the partition 31, and the rear acoustic cavity is caused by the installation of the clamping wall
  • the space in the 132 is reduced, so the filling space of the sound-absorbing particles is reduced, and the integrated molding method can reduce or even eliminate the setting of the clamping wall, thereby greatly reducing the occupation of the space of the rear acoustic cavity 132 and increasing the sound-absorbing particles Filling space.
  • the housing 10 includes an upper shell 11 and a lower shell 12, the upper shell 11 and the lower shell 12 are enclosed to form a receiving cavity 13, the speaker unit 20 and the upper housing 11 together form a front sound cavity 131, the speaker unit 20, and the lower housing 12 and the upper shell 11 enclose together to form a rear acoustic cavity 132.
  • the speaker unit 20 and the upper shell 11 are fixed by adhesion.
  • the partition plate 31 and the lower shell 12 are integrally injection-molded, and the end of the partition plate 31 away from the lower shell 12 is in contact with the upper shell 11 so as to isolate the first rear cavity 1321 and the second rear cavity 1322.
  • the partition 31 and the lower shell 12 are integrally formed, there is no installation gap between the partition 31 and the lower shell 12, and the consistency between the two is better.
  • the upper shell 11 and the lower shell 12 are assembled At this time, it is only necessary to consider the assembly between the partition 31 and the upper shell 11, since there is no need to consider the assembly between the partition 31 and the upper shell 11 and the partition 31 and the lower shell 12, so the The consistency during assembly is better, which is conducive to automated assembly, and the gap generated by assembly is less, so the product quality is easier to guarantee.
  • the upper shell 11 is provided with a slot 112, the slot 112 is located in the rear acoustic cavity 132, and the partition 31 is inserted into the slot 112.
  • the slot 112 By providing the slot 112 for inserting the partition 31, it can play a limiting role on the partition 31, avoid deviation of the partition 31, and can play a better isolation effect.
  • the partition 31 and the slot 112 are tightly fitted and inserted, so as to achieve better sealing and prevent sound-absorbing particles from passing through the connection gap between the partition 31 and the slot 112.
  • the lower shell 12 is provided in a plate shape, and the upper shell 11 is in the shape of a cavity open toward the lower shell 12 and includes a bottom wall 114 and a peripheral wall 115 connected to each other.
  • the bottom wall 114 is opposite to the lower shell 12.
  • the peripheral wall 115 extends in an annular shape along the peripheral edge of the bottom wall 114, and the lower shell 12 covers the end of the peripheral wall 115 away from the bottom wall 114.
  • the slot 112 includes portions on two opposite wall surfaces of the peripheral wall 115, so that when the partition 31 is inserted toward the upper shell 11, the partition 31 can slide along the slot 112 on the peripheral wall 115, The slot 112 on the peripheral wall 115 can guide the insertion of the partition plate 31.
  • the slot 112 further includes a portion located on the bottom wall 114, and the partition 31 is inserted into the slot 112 on the bottom wall 114, thereby wrapping all side edges of the partition 31 except the side connected to the lower case 12 Therefore, the first rear cavity 1321 and the second rear cavity 1322 play a better role in isolation and achieve a better sealing effect.
  • two clamping walls 111 are provided on the upper shell 11, and the two clamping walls 111 are opposed and spaced apart, and the space between the two clamping walls 111 constitutes a slot 112.
  • the slot 112 may be formed on the upper case 11 by removing surface material.
  • the upper shell 11 and the lower shell 12 are bonded or welded, and the gap at the connection between the upper shell 11 and the lower shell 12 can be eliminated by means of bonding or welding to achieve a better sealing effect between the two.
  • the upper shell 11 and the lower shell 12 can also be connected by a snap.
  • the lower case 12 is provided with a filling hole 122
  • the speaker module further includes a cover plate 121
  • the cover plate 121 covers the filling hole 122.
  • the sound-absorbing particles can be poured into the second rear cavity 1322 from the filling hole 122, which can ensure that the entire second rear cavity 1322 is filled with sound-absorbing particles;
  • the cover 121 closes the filling hole 122 to avoid leakage of sound-absorbing particles.
  • the cover plate 121 is detachably connected to the lower case 12, so that it is convenient to open the cover plate 121 to replace the sound absorbing particles.
  • the holes of the cover plate 121 and the filling hole 122 can be provided with threads, so that the cover plate 121 and the lower shell 12 are screwed tightly; in addition, the cover plate 121 and the lower shell 12 can also be clamped or screwed Wait for the connection.
  • the partition 31 is provided with a communication hole 311, so that the partition 31 is provided in a frame shape, the speaker module further includes a mesh cloth 32, the mesh cloth 32 is fixed to the partition 31, and covers the communication hole 311 is provided, and the mesh cloth 32 and the partition plate 31 together form an isolation member 30 for separating the first rear cavity 1321 and the second rear cavity 1322.
  • the mesh 32 is easy to process, and the meshes on it can be made smaller, it can play a better blocking effect on the sound-absorbing particles, and the mesh 32 has better air permeability, so it can ensure the smooth flow of air .
  • the partition 31 is in the form of a frame, which greatly reduces the blocking area of the partition 31, and can ensure the air circulation between the first rear cavity 1321 and the second rear cavity 1322. Further, the partition 31 is provided with reinforcing ribs 312, which are respectively connected to two opposite sides of the partition 31, and the communication hole 311 is partitioned into two through holes. The reinforcing ribs 312 can play a structural role in strengthening the frame-shaped partition plate 31 to prevent the partition plate 31 from being co-extruded and deformed by the upper shell 11 and the lower shell 12.
  • the mesh cloth 32 and the separator 31 there are various fixing methods between the mesh cloth 32 and the separator 31, for example, the mesh cloth 32 and the separator 31 are integrally injection-molded, and the mesh cloth 32 is injection-molded together with the separator 31 as an insert;
  • the partition plate 31 is provided with a hot melt, and the mesh cloth 32 and the partition plate 31 are hot-melted and fixed by the hot melt element; or, the mesh cloth 32 and the partition plate 31 are bonded and fixed.
  • the mesh cloth 32 and the partition plate 31 can also be fixed with nails or the like.
  • the mesh cloth 32 is located on the side of the partition plate 31 facing the first rear cavity 1321, thereby avoiding the occupation of the space in the second rear cavity 1322 by the mesh cloth 32, thereby ensuring that the second rear cavity 1322 can be accommodated More sound-absorbing particles.
  • the isolation member 30 may include only the partition 31, and the partition 31 is provided with a plurality of air-permeable meshes, so that the partition 31 is arranged in a mesh shape, thus eliminating the part of the mesh 32
  • the partition 31 itself blocks the sound-absorbing particles.
  • the diameter of the air-permeable mesh is smaller than the outer diameter of the sound-absorbing particles to prevent the sound-absorbing particles from drilling into the first rear cavity 1321 from the air-permeable mesh.

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

Abstract

La présente invention concerne un module de haut-parleur, le module de haut-parleur comprenant : une coque, comprenant une coque supérieure et une coque inférieure, la coque supérieure et la coque inférieure s'enfermant pour former une cavité de réception, et une paroi interne de la coque supérieure étant pourvue d'une fente; une unité de haut-parleur, qui est disposée dans la cavité de réception, l'unité de haut-parleur et la coque supérieure s'enfermant conjointement pour former une cavité avant, l'unité de haut-parleur, la coque inférieure et la coque supérieure s'enfermant conjointement pour former une cavité arrière, la coque étant pourvue d'un trou de sortie sonore, et la cavité sonore avant étant reliée au trou de sortie sonore; et une plaque de séparation, qui est disposée dans la cavité arrière et sépare la cavité arrière en une première cavité arrière et une seconde cavité arrière. La plaque de séparation et la coque inférieure sont moulées par injection d'un seul tenant, et la plaque de séparation est insérée dans la fente. L'unité de haut-parleur est située dans la première cavité arrière, et la seconde cavité arrière est remplie de particules absorbant le son. La solution technique de la présente invention peut permettre une utilisation complète de l'espace de la cavité arrière pour améliorer les performances acoustiques du module.
PCT/CN2018/125558 2018-11-23 2018-12-29 Module de haut-parleur WO2020103301A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811413493.6A CN109246563B (zh) 2018-11-23 2018-11-23 扬声器模组
CN201811413493.6 2018-11-23

Publications (1)

Publication Number Publication Date
WO2020103301A1 true WO2020103301A1 (fr) 2020-05-28

Family

ID=65074004

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/125558 WO2020103301A1 (fr) 2018-11-23 2018-12-29 Module de haut-parleur

Country Status (2)

Country Link
CN (1) CN109246563B (fr)
WO (1) WO2020103301A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113438342A (zh) * 2021-05-21 2021-09-24 荣耀终端有限公司 一种扬声器模组和电子设备
US11910139B2 (en) 2019-08-20 2024-02-20 Goertek Inc. Acoustic device and electronic apparatus

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Publication number Priority date Publication date Assignee Title
CN110536190A (zh) * 2019-08-30 2019-12-03 歌尔股份有限公司 一种发声装置以及电子产品
CN110830894A (zh) * 2019-11-09 2020-02-21 歌尔股份有限公司 声学装置及电子设备
CN111147977A (zh) * 2019-12-30 2020-05-12 歌尔科技有限公司 一种发声装置模组和装配方法
CN111131980A (zh) * 2019-12-30 2020-05-08 歌尔科技有限公司 扬声器模组和电子设备
CN113747315B (zh) * 2020-05-29 2024-04-30 歌尔股份有限公司 发声装置和电子设备
CN111954128B (zh) * 2020-08-07 2021-11-26 歌尔股份有限公司 一种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
CN113473351B (zh) * 2021-06-28 2023-04-25 歌尔股份有限公司 扬声器模组、隔离网布组件的加工工艺及电子设备

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JP2013062630A (ja) * 2011-09-13 2013-04-04 Masaki Chigira 内部吸音管つき二重円筒スピーカー
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11910139B2 (en) 2019-08-20 2024-02-20 Goertek Inc. Acoustic device and electronic apparatus
CN113438342A (zh) * 2021-05-21 2021-09-24 荣耀终端有限公司 一种扬声器模组和电子设备
CN113438342B (zh) * 2021-05-21 2022-07-01 北京荣耀终端有限公司 一种扬声器模组和电子设备

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