WO2017190515A1 - 一种扬声器模组 - Google Patents

一种扬声器模组 Download PDF

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Publication number
WO2017190515A1
WO2017190515A1 PCT/CN2016/113601 CN2016113601W WO2017190515A1 WO 2017190515 A1 WO2017190515 A1 WO 2017190515A1 CN 2016113601 W CN2016113601 W CN 2016113601W WO 2017190515 A1 WO2017190515 A1 WO 2017190515A1
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Prior art keywords
cavity
module
sound absorbing
speaker
sound
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PCT/CN2016/113601
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English (en)
French (fr)
Inventor
曹晓东
刘金利
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Goertek Inc
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Goertek Inc
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Priority to US16/099,158 priority Critical patent/US11128950B2/en
Publication of WO2017190515A1 publication Critical patent/WO2017190515A1/zh
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
    • H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the present invention relates to the field of electroacoustic products, and in particular to a speaker module.
  • the speaker module is an important acoustic component of a portable electronic device for converting between an electrical signal and a sound signal, and is an energy conversion device.
  • the existing speaker module generally includes a module housing and a speaker unit.
  • the module housing defines a module cavity for housing the speaker unit, and the speaker unit separates the module cavity into The front sound chamber and the rear sound chamber, and a sound absorbing member made of a sound absorbing material such as sound absorbing cotton may be disposed in the rear sound chamber to adjust the acoustic performance of the module.
  • the sound absorbing components made by traditional sound absorbing materials can no longer meet the acoustic performance debugging and correction requirements of the micro speaker industry.
  • new sound absorbing materials have been continuously developed, tried and verified. It has been found that placing a porous sound absorbing material in the rear acoustic cavity of the speaker module can effectively improve its acoustic performance.
  • the new sound absorbing materials with good application effects include natural zeolite, activated carbon, white carbon black, silicon dioxide, A non-foaming sound absorbing material such as artificial zeolite, or a mixture comprising two or more of the above materials.
  • the above powdery non-foaming sound absorbing material is first prepared into a sound absorbing particle having a particle diameter of 0.1 to 1.0 mm for quantitative and process filling workability.
  • the particle size of the sound absorbing particles of the non-foaming sound absorbing material can be selected to be small within a range of 0.1 to 1.0 mm.
  • the speaker industry uses the above non-foaming sound absorbing material to make the sound absorbing component.
  • the following solutions can be adopted: by adding a wire mesh cloth, a metal mesh, etc. in the outer casing of the speaker module, and combining the speaker module with the outer casing of the speaker module.
  • An independent venting cavity is constructed in the rear acoustic cavity, and then a filling hole is reserved on the independent venting cavity to complete direct filling of the non-foaming sound absorbing material particles to form a sound absorbing component.
  • the non-foaming sound absorbing material itself is a porous material having a high specific surface area, it is easy to generate static electricity when it comes into contact with air, and the non-foaming sound absorbing material is an insulator, resulting in a constant charge accumulation. The electrical effect continues to increase.
  • the porous non-foaming sound absorbing material itself has a polar defect point, and it is charged by itself. The above two reasons lead to the electrostatic problem of filling the non-foaming sound absorbing material particles, thereby causing the following adverse effects:
  • the non-foaming sound absorbing material particles are easy to generate static electricity, when the particles are packaged to form a sound absorbing component after filling, a certain number of particles enter the packaging area of the filling port, causing the packaging operation to be invalid, the packaging yield is low, or the package strength is affected.
  • the package In the working process of the speaker module, it is subject to aging, external force and other factors, and the package is easy to break and lose efficiency, causing leakage of sound absorbing particles and affecting the acoustic quality of the speaker.
  • the technical problem to be solved by the present invention is to provide a speaker module with good acoustic performance.
  • the technical solution of the present invention is:
  • a speaker module includes a module housing and a speaker unit housed in the module housing, and the speaker unit separates the module cavity enclosed by the module housing into a front sound chamber and a rear sound chamber. a cavity, wherein the rear acoustic cavity is provided with an isolating member, and the isolating member divides the rear acoustic cavity into a receiving cavity and a sound absorbing cavity, wherein the sound absorbing cavity is filled with sound absorbing particles, and the mode constituting the sound absorbing cavity
  • An antistatic material is added to a portion of the outer casing material of the outer casing, or an inner surface of a portion of the module outer casing constituting the sound absorbing cavity is coated with an antistatic material, and the antistatic material is a conductive material or an antistatic agent. .
  • the module casing located at the position of the sound absorbing cavity is provided with a filling port, and the antistatic material is added in a casing material of a part of the module casing corresponding to the filling port, Or the antistatic material is coated on an inner surface of the module housing corresponding to the filling port.
  • the surface of the sound absorbing particles is coated with an electrosensitive metal film or sprayed with the antistatic agent.
  • the material of the electro-sensitive metal film is one of a metal block polymer of polyether, a derivative of glycerin-stearate or ethylene oxide.
  • the surface of the sound absorbing particles is subjected to a polishing treatment, and the powder falling rate is wt% ⁇ 0.1.
  • the antistatic material is added to a portion of the outer casing material of the module casing corresponding to the filling port, and the antistatic material is added in an amount of 0.1 to 10% by weight of the outer casing material. Share.
  • the antistatic material is added in an amount of 0.1 to 5% by weight of the outer shell material.
  • the conductive material is one or more of carbon black, metal and metal oxide.
  • the antistatic agent is one or more of a quaternary ammonium salt, a phosphate, a fatty acid ester, an ammonium ethoxylate, an alkyl sulfonate and an acrylic acid derivative.
  • an antistatic material is added to a casing material of a portion of the module casing constituting the sound absorbing cavity, or an inner surface of a portion of the module casing constituting the sound absorbing cavity is coated with
  • An antistatic material which is a conductive material or an antistatic agent.
  • the speaker module of the structure can improve the electrostatic characteristics of the module casing at the sound absorbing cavity, enhance the antistatic capability of the module casing at the sound absorbing cavity, and greatly improve the filling rate of the sound absorbing particles in the sound absorbing cavity, so that the speaker module is rearward
  • the space of the acoustic cavity can be fully utilized, so that the sound absorbing particles can fully exert its effect of improving the acoustic performance of the speaker module, and is more conducive to the reduction of the speaker module F0; at the same time, the static electricity is effectively eliminated, and the sound absorbing particles are prevented from adhering to the sound absorbing cavity.
  • the packaging area of the filling port greatly reduces the problem of poor packaging strength caused by the sound absorbing particles being mixed in the packaging area of the sound absorbing cavity filling port, so that the packaging area of the sound absorbing cavity is not easily damaged and leaked, thereby improving the package yield and the package yield. It can be increased to ⁇ 95%, which improves the service life of the speaker module and reduces the cost of using the speaker module.
  • FIG. 1 is a schematic structural view of a first embodiment of a speaker module of the present invention
  • FIG. 2 is a schematic structural view of a second embodiment of the speaker module of the present invention.
  • the speaker module of the embodiment includes a module housing 1 and a speaker unit housed in the module housing 1.
  • the speaker unit separates the module cavity enclosed by the module housing into the front sound chamber 2 and
  • the rear cavity 3 has two cavities, and the rear cavity 3 is provided with an isolating member 4, and the partitioning member 4 divides the rear acoustic cavity 3 into a receiving cavity and a sound absorbing cavity 31.
  • the sound absorbing cavity 31 is filled with sound absorbing particles 32, and is located at the position of the sound absorbing cavity 31.
  • the module casing 1 is provided with a filling port 33, and an antistatic material is added to the outer casing material of the module casing 1 constituting the sound absorbing chamber 31.
  • an antistatic material may be added to the outer casing material of the portion of the casing corresponding to the module casing provided with the filling port 33, and the specific embodiment is not limited by the drawing 1.
  • the antistatic material 5 is added in an amount of 0.1 to 10% by weight based on the outer casing material.
  • the antistatic material 5 is added in an amount of 0.1 to 5% by weight of the outer casing material.
  • the electrostatic characteristics of the module casing can be improved, the filling rate of the sound absorbing particles in the sound absorbing cavity can be greatly improved, and the sound absorbing cavity can be packaged. Yield.
  • the surface of the sound absorbing particles 32 is coated with an electrosensitive metal film or sprayed with an antistatic agent to improve the surface conductivity of the sound absorbing particles 32 and enhance the antistatic property of the sound absorbing particles 32.
  • the material of the electrically inductive metal film is one of a metal block polymer of polyether, a derivative of glycerin-stearate or ethylene oxide.
  • the surface of the sound absorbing particles 32 is polished, and the powder falling rate is wt% ⁇ 0.1, so that the particle abrasion rate, that is, the powder falling rate (wt%) ⁇ 0.1, reduces the accumulation of electric charge due to the friction of the rough surface of the sound absorbing particles.
  • the conductive material is one or more of carbon black, metal, and metal oxide.
  • the antistatic agent is one or more of a quaternary ammonium salt, a phosphate, a fatty acid ester, an ammonium ethoxylate, an alkyl sulfonate, and an acrylic acid derivative.
  • the structure of the speaker module of this embodiment is basically the same as that of the first embodiment, except that the antistatic material 5 is coated on the inner surface of the portion of the module casing 1 constituting the filling port 33.
  • the antistatic material 5 may be coated on the inner surface of a portion of the module casing 1 corresponding to the filling port 33.
  • Such a structure can improve the surface conductivity of the module casing 1, and the surface resistance of the region coated with the antistatic material 5 is ⁇ 10 12 ⁇ , thereby achieving the purpose of improving the electrostatic characteristics of the module casing 1.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

本发明公开了一种扬声器模组，包括模组外壳及收容在模组外壳内的扬声器单体，扬声器单体将模组外壳围成的模组内腔分隔为前声腔和后声腔两个腔体，后声腔内设有隔离部件，隔离部件将后声腔分隔成收容腔和吸音腔，吸音腔内填充有吸音颗粒，位于吸音腔位置的模组外壳的外壳材料中添加有防静电材料，或位于吸音腔位置的模组外壳的表面涂覆有防静电材料，防静电材料为导电材料或抗静电剂。本发明的扬声器模组，能够较大地提高扬声器模组后声腔的吸音腔内的吸音颗粒填充率，使扬声器模组的后声腔的空间得以充分利用，吸音颗粒能够充分发挥其改善扬声器模组声学性能的效果，大大提高了扬声器模组的声学性能。

Description

一种扬声器模组 技术领域
本发明涉及电声产品技术领域，具体地说，是涉及一种扬声器模组。
背景技术
扬声器模组是便携式电子设备的重要声学部件，用于完成电信号与声音信号之间的转换，是一种能量转换器件。现有的扬声器模组，一般包括模组外壳及扬声器单体，所述模组外壳内形成收容所述扬声器单体的模组内腔，所述扬声器单体将所述模组内腔分隔为前声腔和后声腔，后声腔内可设置吸音棉等吸音材料制成的吸音组件来调节模组的声学性能。
近年，随着穿戴式电子产品的日益轻薄化，传统的吸音材料制作的吸音组件已不能满足微型扬声器行业的声学性能调试校正需求，为了解决这个问题，新型吸音材料不断被开发、尝试，经过验证，人们发现在扬声器模组的后声腔中放置多孔性吸音材料可以有效的改善其声学性能，目前，应用效果较好的该类新型吸音材料包括天然沸石、活性炭、白炭黑、二氧化硅、人工沸石等非发泡吸音材料，或者包括以上两种或两种以上材料制成的混合物。而在将上述非发泡吸音材料应用于扬声器中时，出于可定量性和工艺填充可实施性，需先将以上粉末态非发泡吸音材料制备成0.1至1.0mm粒径的吸音颗粒，根据扬声器产品的后声腔大和结构，非发泡吸音材料的吸音颗粒粒径的选取可在0.1至1.0mm内较小区间浮动。
目前，扬声器行业使用上述非发泡吸音材料来制作吸音组件可采取以下方案：通过在扬声器模组的外壳内增添丝网布、金属网等途径，与扬声器模组的外壳结合在扬声器模组的后声腔内构建独立透气腔体，然后在独立透气腔体上预留灌装孔完成非发泡吸音材料颗粒的直接填充，制成吸音组件。
由于非发泡吸音材料本身为多孔性材料，具有较高的比表面积，在与空气接触时很容易产生静电，而且非发泡吸音材料为绝缘体，导致电荷不断积累静 电效应不断增强。此外，多孔性的非发泡吸音材料本身存在极性缺陷点，自身就会带电，以上两方面原因导致非发泡吸音材料颗粒灌装的静电问题，从而导致以下不良效果：
一、在扬声器模组的独立透气腔体的灌装过程中，由于颗粒间的静电排斥效应，非发泡吸音材料颗粒无法完全充满既定的装填区域，填充量较少，填充率为55至75％左右，难以有效利用扬声器后声腔空间，对扬声器声学性能的改善效果受到明显限制；
二、由于非发泡吸音材料颗粒易产生静电，颗粒在填充后封装形成吸音组件时，会有若干颗粒进入到灌装口的封装区域，造成封装作业失效，封装良率低，或者影响封装强度，在扬声器模组的工作过程中受到老化、外力等因素封装容易破损失效，造成吸音颗粒泄漏，影响扬声器的声学品质。
发明内容
本发明所要解决的技术问题是：提供一种声学性能效果好的扬声器模组。
为解决上述技术问题，本发明的技术方案是：
一种扬声器模组，包括模组外壳及收容在所述模组外壳内的扬声器单体，所述扬声器单体将所述模组外壳围成的模组内腔分隔为前声腔和后声腔两个腔体，所述后声腔内设有隔离部件，所述隔离部件将所述后声腔分隔成收容腔和吸音腔，所述吸音腔内填充有吸音颗粒，构成所述吸音腔的所述模组外壳的部分的外壳材料中添加有防静电材料，或构成所述吸音腔的所述模组外壳的部分的内表面涂覆有防静电材料，所述防静电材料为导电材料或抗静电剂。
优选的，位于所述吸音腔位置的所述模组外壳上设有灌装口，所述防静电材料添加在与所述灌装口相对应的所述模组外壳的部分的外壳材料中，或所述防静电材料涂覆在与所述灌装口相对应的所述模组外壳的内表面。
优选的，所述吸音颗粒的表面包覆有电感应性金属薄膜或者喷涂有所述抗静电剂。
优选的，所述电感应性金属薄膜的材质为聚醚的金属嵌段聚合物、甘油-硬脂酸酯或环氧乙烷的衍生物中的一种。
优选的，所述吸音颗粒表面进行抛光处理，落粉率wt％≤0.1。
优选的，所述防静电材料添加在与所述灌装口相对应的所述模组外壳的部分的外壳材料中，所述防静电材料的添加量为所述外壳材料的0.1～10％重量份。
优选的，所述防静电材料的添加量为所述外壳材料的0.1～5％重量份。
优选的，所述导电材料为炭黑、金属和金属氧化物中的一种或几种。
优选的，所述抗静电剂为季铵盐、磷酸盐、脂肪酸脂、乙氧化铵、烷基磺酸盐和丙烯酸衍生物中的一种或几种。
采用了上述技术方案后，本发明的有益效果是：
本发明的扬声器模组，构成所述吸音腔的所述模组外壳的部分的外壳材料中添加有防静电材料，或构成所述吸音腔的所述模组外壳的部分的内表面涂覆有防静电材料，所述防静电材料为导电材料或抗静电剂。此种结构的扬声器模组，能够改善吸音腔处模组外壳的静电特性，增强吸音腔处模组外壳的抗静电能力，能够大大提高吸音腔内吸音颗粒的填充率，使得扬声器模组的后声腔的空间得以充分利用，使吸音颗粒能够充分发挥其改善扬声器模组声学性能的效果，更有利于扬声器模组F0的降低；同时，静电的有效消除，防止了吸音颗粒粘附在吸音腔的灌装口的封装区域，大大降低了因为吸音颗粒夹杂在吸音腔灌装口的封装区域导致的封装强度不良的问题，使吸音腔的封装区域不易破损泄漏，提高了封装良率，封装良率可提高至≥95％，提高了扬声器模组的使用寿命，降低了扬声器模组的使用成本。
附图说明
图1是本发明的扬声器模组的实施例一的结构示意图；
图2是本发明的扬声器模组的实施例二的结构示意图；
图中：1、模组外壳；2、前声腔；3、后声腔；31、吸音腔；32、吸音颗粒； 33、灌装口；4、隔离部件；5、防静电材料。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，且不用于限定本发明。
实施例一
参照图1，本实施例的扬声器模组，包括模组外壳1及收容在模组外壳1内的扬声器单体，扬声器单体将模组外壳围成的模组内腔分隔为前声腔2和后声腔3两个腔体，后声腔3内设有隔离部件4，隔离部件4将后声腔3分隔成收容腔和吸音腔31，吸音腔31内填充有吸音颗粒32，位于吸音腔31位置的模组外壳1上设有灌装口33，构成吸音腔31的模组外壳1的部分的外壳材料中添加有防静电材料。优选地，可以在与设置有灌装口33的模组外壳相对应的那部分壳体的外壳材料中添加防静电材料，具体实施方式不受附图1的限制。添加有防静电材料5的部分的外壳材料中，防静电材料5的添加量为外壳材料的0.1～10％重量份。优选地，添加有防静电材料5的部分的外壳材料中，防静电材料5的添加量为的外壳材料的0.1～5％重量份。通过在与灌装口33相对应的模组外壳1的部分的外壳材料中添加防静电材料，能够改善模组外壳的静电特性，大大提高吸音腔内吸音颗粒的填充率，和吸音腔的封装良率。
吸音颗粒32的表面包覆有电感应性金属薄膜或者喷涂有抗静电剂，提高吸音颗粒32的表面导电性，增强吸音颗粒32的抗静电特性。
电感应性金属薄膜的材质为聚醚的金属嵌段聚合物、甘油-硬脂酸酯或环氧乙烷的衍生物中的一种。
吸音颗粒32表面进行抛光处理，落粉率wt％≤0.1，使颗粒磨耗即落粉率(wt％)≤0.1，减少因吸音颗粒粗糙面摩擦而积累电荷。
导电材料为炭黑、金属和金属氧化物中的一种或几种。
抗静电剂为季铵盐、磷酸盐、脂肪酸脂、乙氧化铵、烷基磺酸盐和丙烯酸衍生物中的一种或几种。
实施例二
参照图2，本实施例的扬声器模组的结构与实施例一的结构基本相同，不同之处在于：防静电材料5涂覆在构成灌装口33的模组外壳1的部分的内表面。优选地，防静电材料5可以涂覆在与灌装口33相对应的模组外壳1的部分的内表面。此种结构能够提高模组外壳1的表面导电性，使涂有防静电材料5的区域的表面电阻≤1012Ω，从而实现改善模组外壳1的静电特性的目的。
以上所述为本发明最佳实施方式的举例，其中未详细述及的部分均为本领域普通技术人员的公知常识。本发明的保护范围以权利要求的内容为准，任何基于本发明的技术启示而进行的等效变换，也在本发明的保护范围之内。

Claims (9)

  1. 一种扬声器模组，包括模组外壳及收容在所述模组外壳内的扬声器单体，所述扬声器单体将所述模组外壳围成的模组内腔分隔为前声腔和后声腔两个腔体，所述后声腔内设有隔离部件，所述隔离部件将所述后声腔分隔成收容腔和吸音腔，所述吸音腔内填充有吸音颗粒，其特征在于：构成所述吸音腔的所述模组外壳的部分的外壳材料中添加有防静电材料，或构成所述吸音腔的所述模组外壳的部分的内表面涂覆有防静电材料，所述防静电材料为导电材料或抗静电剂。
  2. 根据权利要求1所述的扬声器模组，其特征在于：位于所述吸音腔位置的所述模组外壳上设有灌装口，所述防静电材料添加在与所述灌装口相对应的所述模组外壳的部分的外壳材料中，或所述防静电材料涂覆在与所述灌装口相对应的所述模组外壳的内表面。
  3. 根据权利要求2所述的扬声器模组，其特征在于：所述吸音颗粒的表面包覆有电感应性金属薄膜或者喷涂有所述抗静电剂。
  4. 根据权利要求3所述的扬声器模组，其特征在于：所述电感应性金属薄膜的材质为聚醚的金属嵌段聚合物、甘油-硬脂酸酯或环氧乙烷的衍生物中的一种。
  5. 根据权利要求2所述的扬声器模组，其特征在于：所述吸音颗粒表面进行抛光处理，落粉率wt％≤0.1。
  6. 根据权利要求2所述的扬声器模组，其特征在于：所述防静电材料添加在与所述灌装口相对应的所述模组外壳的部分的外壳材料中，所述防静电材料的添加量为所述外壳材料的0.1～10％重量份。
  7. 根据权利要求6所述的扬声器模组，其特征在于：所述防静电材料的添加量为所述外壳材料的0.1～5％重量份。
  8. 根据权利要求1所述的扬声器模组，其特征在于：所述导电材料为炭黑、金属和金属氧化物中的一种或几种。
  9. 根据权利要求1所述的扬声器模组，其特征在于：所述抗静电剂为季铵盐、磷酸盐、脂肪酸脂、乙氧化铵、烷基磺酸盐和丙烯酸衍生物中的一种或几种。
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