WO2017190512A1 - 一种吸音组件及应用该吸音组件的扬声器模组 - Google Patents

一种吸音组件及应用该吸音组件的扬声器模组 Download PDF

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Publication number
WO2017190512A1
WO2017190512A1 PCT/CN2016/112641 CN2016112641W WO2017190512A1 WO 2017190512 A1 WO2017190512 A1 WO 2017190512A1 CN 2016112641 W CN2016112641 W CN 2016112641W WO 2017190512 A1 WO2017190512 A1 WO 2017190512A1
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Prior art keywords
sound absorbing
sound
outer casing
antistatic
absorbing member
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PCT/CN2016/112641
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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 US16/098,824 priority Critical patent/US10567869B2/en
Publication of WO2017190512A1 publication Critical patent/WO2017190512A1/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
    • 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; 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
    • 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
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2811—Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers

Definitions

  • the present invention relates to the field of electroacoustic products, and in particular to a sound absorbing component and a speaker module using the same.
  • 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.
  • a plastic or metal mesh such as PP, PC, PE, etc. is formed into a bracket 11' adapted to the rear acoustic cavity of the speaker module, and then the sound absorbing particles 13' are loaded into the carrier, and finally the glue is used.
  • Hot The shell and the shell cover 12' are packaged by pressing or the like, and the shell cover 12' may be packaged by a non-woven fabric, a mesh net or a metal mesh to form a sound absorbing component;
  • an independent venting cavity is constructed in the rear acoustic cavity of the speaker module in combination with the outer casing of the speaker module, and then reserved on the independent ventilating cavity.
  • the filling hole completes the 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, static electricity is easily generated when it comes into contact with air, and the non-foaming sound absorbing material is an insulator, so that the electrostatic accumulation effect of the electric charge is continuously enhanced.
  • the porous non-foaming sound absorbing material itself has a polar defect point, and it is charged by itself, and the above-mentioned various causes cause the static problem of the non-foaming sound absorbing material particle filling, thereby causing the following undesirable effects:
  • the non-foaming sound absorbing material particles cannot completely fill the predetermined filling area, and the filling amount is small.
  • the filling rate is about 55 to 75%, and it is difficult to effectively utilize the cavity space behind the speaker, and the improvement effect on the acoustic performance of the speaker is significantly limited;
  • 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 package area, causing the packaging operation to fail, the package yield is low, or the package strength is affected, in the speaker mode.
  • it is easy to break the loss effect due to factors such as aging and external force, which causes the sound absorbing particles to leak and affect the acoustic quality of the speaker.
  • the technical problem to be solved by the present invention is to provide a sound absorbing component capable of greatly improving the filling rate of sound absorbing particles, and to provide a speaker module with good sound absorbing effect of the rear sound chamber sound absorbing component.
  • a sound absorbing component comprising an outer casing and sound absorbing particles filled in the outer casing, wherein an antistatic material is added to the material of the outer casing, or the surface of the outer casing is coated with an antistatic material.
  • the antistatic material is a conductive material or an antistatic agent
  • the surface of the sound absorbing particle is coated with an electric induction metal film or sprayed with the antistatic agent;
  • the electrically inductive metal film is made of a polyether metal block polymer, glycerin-stearic acid.
  • glycerin-stearic acid One of a derivative of an ester 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 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 the material of the outer casing, and the antistatic material is added in an amount of 0.1 to 10% by weight of the material of the outer casing.
  • the outer casing comprises a bracket and a cover that are joined together.
  • the surface of the joint between the bracket and the cover and the inner surface of the cover are coated with the antistatic material.
  • the outer casing is a bag-like structure made of wire mesh cloth.
  • 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 in which the sound absorbing component is disposed, and the sound absorbing component is any one of the above sound absorbing components.
  • the sound absorbing component of the present invention comprises an outer casing, and sound absorbing particles filled in the outer casing, wherein an antistatic material is added to the material of the outer casing, or the surface of the outer casing is coated with an antistatic material.
  • the electrostatic material is a conductive material or an antistatic agent.
  • the space of the rear sound chamber of the speaker module of the sound component can be fully utilized, so that the sound absorbing particles can fully exert the effect of improving the acoustic performance of the speaker module, and is more beneficial to the reduction of the speaker module F0; at the same time, the static electricity is effectively eliminated and prevented.
  • the sound absorbing particles adhere to the package area of the outer casing, which greatly reduces the problem of poor packaging strength caused by the sound absorbing particles being mixed in the package area, so that the package area of the outer casing is not easily damaged and leaked, the package yield is improved, and the package yield can be improved to ⁇ 95%, which improves the service life of the speaker module and reduces the cost of using the speaker module.
  • the surface of the sound absorbing particles is coated with an electro-sensitive metal film or sprayed with an antistatic agent to provide surface conductivity of the sound absorbing particles, further improve the electrostatic characteristics, and improve the filling rate of the sound absorbing particles in the outer casing and the packaging yield of the sound absorbing component.
  • the outer casing when the antistatic material is mixed in the material of the outer casing, the outer casing itself has electrical conductivity, the antistatic property of the outer casing is improved, and the subsequent cleaning operation on the outer surface of the outer casing does not affect the antistatic effect of the outer casing.
  • the anti-static effect of the outer casing is long lasting.
  • FIG. 1 is a schematic structural view of a conventional sound absorbing component
  • Embodiment 1 is a schematic structural view of Embodiment 1 of the sound absorbing component of the present invention
  • FIG. 3 is a schematic structural view of a second embodiment of the sound absorbing component of the present invention.
  • FIG. 4 is a schematic structural view of a third embodiment of the sound absorbing component of the present invention.
  • the sound absorbing assembly 1 of the present embodiment includes a casing including a bracket 11 and a casing cover 12 which are joined together.
  • the housing 11 is filled with sound absorbing particles 13 , and the sound absorbing particles 13 can be made of sound absorbing particles made of a non-foaming sound absorbing material.
  • the material of the housing 11 and the cover 12 is mixed with an antistatic material 14 , and the housing 11 and the cover 12 is produced by kneading each of the materials in which the antistatic material 14 is mixed, and the amount of the antistatic material added is 0.1 to 10% by weight of the material of the outer casing.
  • the antistatic material may be a conductive material or an antistatic agent.
  • the conductive material may be one or more of conductive materials such as carbon black, metal and metal oxide; antistatic agents may be quaternary ammonium salts, phosphates, fatty acid esters, ammonium sulphate, alkyl sulfonates, etc.
  • a polymer type surfactant such as a surfactant or an acrylic derivative can improve the electrostatic properties of the outer casing by adding the above-mentioned antistatic material to the material of the carrier 11 and the cover 12 The filling rate of the sound absorbing particles in the outer casing and the packaging yield of the sound absorbing component.
  • the surface finish of the granule is improved.
  • the sound absorbing particles are subjected to surface polishing treatment, so that the particle abrasion rate (wt%) ⁇ 0.1, and the electric charge is accumulated due to friction of the rough surface of the particles.
  • surface conductivity is provided on the surface of the particles, such as coating a layer of an electrically inductive metal film, or spraying an antistatic agent on the surface of the particles, as shown in FIG. 2, to improve surface conduction of the sound absorbing particles.
  • sexuality enhances its antistatic properties.
  • 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 sound absorbing assembly of the present embodiment includes a housing including a housing 11 and a housing cover 12 that are joined together.
  • the tray 11 is filled with sound absorbing particles 13, and the sound absorbing particles 13 may be sound absorbing particles made of a non-foaming sound absorbing material.
  • the surface of the joint portion of the tray 11 and the cover 12 and the inner surface of the cover 12 are coated with an antistatic material 14.
  • Such a structure can improve the surface conductivity of the sound absorbing member, and the surface resistance of the region coated with the antistatic material 14 is ⁇ 10 12 ⁇ , thereby achieving the purpose of improving the electrostatic characteristics of the outer casing.
  • the sound absorbing component of the embodiment is basically the same as that of the first embodiment, except that the outer casing adopts a cloth bag 15 made of a wire mesh cloth.
  • the antistatic material 14 is mixed in the manufacturing material.
  • the purpose of improving the electrostatic properties of the cloth bag is achieved, thereby greatly increasing the filling rate of the sound absorbing particles in the outer casing and the packaging yield of the sound absorbing component. It is of course also possible to apply an antistatic material on the surface of the package area of the bag or on the inner side surface to improve the electrostatic properties of the bag.
  • the invention also discloses a speaker module, the speaker module applying the sound absorbing component, comprising a module shell and a speaker unit, wherein the module housing forms a module cavity for accommodating the speaker unit, and the speaker unit module
  • the inner cavity is divided into a front acoustic cavity and a rear acoustic cavity, and the sound absorbing component 1 described above is disposed in the rear acoustic cavity.

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

Abstract

本发明公开了一种吸音组件，包括外壳及填充在所述外壳内的吸音颗粒，制成所述外壳的材料内添加有防静电材料，或所述外壳的表面涂覆有防静电材料。本发明还公开了一种应用该吸音组件的扬声器模组，本发明的吸音组件能够较大地提高外壳内吸音颗粒填充率，使得应用该吸音组件的扬声器模组的后声腔的空间得以充分利用，并且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。

Description

一种吸音组件及应用该吸音组件的扬声器模组 技术领域
本发明涉及电声产品技术领域，具体地说，是涉及一种吸音组件及应用该吸音组件的扬声器模组。
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小结构，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通常采取以下三种方案：
一、参照图1，将PP、PC、PE等塑料或金属网成型为与扬声器模组的后声腔适配的托壳11’，然后将吸音颗粒13’装入托壳内，最后使用涂胶、热 压等方式将托壳同壳盖12’封装起来，壳盖12’可采用无纺布、Mesh网或金属网封装起来，制成吸音组件；
二、使用PP、PE等材质的丝网布，采用涂胶、热压等方式制成布袋，然后将吸音颗粒装入布袋内，最后使用涂胶、热压等方式完成封装，制成吸音组件；
三、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，以上多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、在以上三种非发泡吸音材料颗粒制作吸音组件的应用形式的灌装过程中，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
技术问题
本发明所要解决的技术问题是：提供一种能够较大地提高吸音颗粒填充率的吸音组件，并且提供一种后声腔吸音组件吸音效果好的扬声器模组。
技术方案
一种吸音组件，包括外壳及填充在所述外壳内的吸音颗粒，制成所述外壳的材料内添加有防静电材料，或所述外壳的表面涂覆有防静电材料。
优选的，所述防静电材料为导电材料或抗静电剂
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；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。
优选的，制成所述外壳的材料内添加有防静电材料，所述防静电材料的添加量为所述外壳的材料的0.1～10％重量份。
优选的，所述外壳包括结合在一起的托壳及壳盖。
优选的，所述托壳与所述壳盖相结合部位的表面及所述壳盖的内侧表面上涂覆有所述防静电材料。
优选的，所述外壳为由丝网布制成的袋状结构。
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，所述后声腔内设置有吸音组件，所述吸音组件为上述的吸音组件中的任一种。
有益效果
本发明的吸音组件，包括外壳，及填充在所述外壳内的吸音颗粒，制成所述外壳的材料内添加有防静电材料，或所述外壳的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。此种结构能够改善外壳的静电特性，增强外壳的抗静电能力，大大提高外壳内吸音颗粒的填充率，使得应用该吸 音组件的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外壳的封装区域，大大降低了因为吸音颗粒夹杂在封装区域导致的封装强度不良的问题，使外壳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。
吸音颗粒的表面包覆有电感应性金属薄膜或者喷涂有抗静电剂，提供吸音颗粒的表面导电性，进一步改善静电特性，提高外壳内吸音颗粒的填充率和吸音组件的封装良率。
本发明的吸音组件，外壳的制作材料中混合有抗静电材料时，使外壳本身具有导电性，改善了外壳的抗静电特性且使后续对外壳的表面清洁操作不影响外壳的防静电效果，使外壳的防静电效果持久。
附图说明
图1是现有的吸音组件的结构示意图；
图2是本发明中的吸音组件的实施例一的结构示意图；
图3是本发明中的吸音组件的实施例二的结构示意图；
图4是本发明中的吸音组件的实施例三的结构示意图；
图中附图标记：1、吸音组件；11、托壳；11’、拖壳；12、壳盖；12’、壳盖；13、吸音颗粒；13’、吸音颗粒；14、防静电材料；15、布袋。
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2，本实施例的吸音组件1，包括外壳，外壳包括结合在一起的托壳11及壳盖12。托壳11内填充有吸音颗粒13，吸音颗粒13可采用非发泡吸音材料制成的吸音颗粒，托壳11与壳盖12的制作材料中混合有防静电材料14，托壳11与壳盖12分别由混合有防静电材料14的制作材料混炼制成，防静电材料的添加量为外壳的材料的0.1～10％重量份。
防静电材料可采用导电材料或抗静电剂。导电材料可采用炭黑、金属和金属氧化物等可导电的材料中的一种或几种；抗静电剂可采用季铵盐、磷酸盐、脂肪酸脂、乙氧化铵、烷基磺酸盐等表面活性剂、丙烯酸衍生物等高分子型表面活性剂中的一种或几种，通过在托壳11和壳盖12的制作材料中添加上述防静电材料，能够改善外壳的静电特性，大大提高外壳内吸音颗粒的填充率，和吸音组件的封装良率。
通过吸音颗粒成型或后处理工艺改善，使得颗粒表面光洁度提高，例如，将吸音颗粒做表面抛光处理，使颗粒磨耗即落粉率(wt％)≤0.1，减少因颗粒粗糙面摩擦而积累电荷。或者在吸音颗粒成型后，对颗粒表面提供表面导电性，如包覆一层电感应性金属薄膜、或者在颗粒表面喷涂抗静电剂等，如图2中所示，来提高吸音颗粒的表面导电性，增强其抗静电特性。其中，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。
实施例二
参照图3，本实施例的吸音组件包括外壳，外壳包括结合在一起的托壳11及壳盖12。托壳11内填充有吸音颗粒13，吸音颗粒13可采用非发泡吸音材料制成的吸音颗粒。托壳11与壳盖12相结合部位的表面及壳盖12的内侧表面上涂覆有防静电材料14。此种结构能够提高吸音组件的表面导电性，使涂有防静电材料14的区域的表面电阻≤1012Ω，从而实现改善外壳的静电特性的目的。
实施例三
参照图4，本实施例的吸音组件与实施例一基本相同，不同之处在于：外壳采用由丝网布制成的布袋15，布袋15在制作时，制作材料中混合有防静电材料14，实现改善布袋的静电特性的目的，从而大大提高外壳内吸音颗粒的填充率，和吸音组件的封装良率。当然还可以在布袋的封装区域表面上或者内侧表面上涂覆有防静电材料，来改善布袋的静电特性。
本发明还公开了一种扬声器模组，应用上述吸音组件的扬声器模组，包括模组外壳及扬声器单体，模组外壳内形成收容扬声器单体的模组内腔，扬声器单体将模组内腔分隔为前声腔和后声腔，后声腔内设置有上述的吸音组件1。
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 (11)

  1. 一种吸音组件,包括外壳及填充在所述外壳内的吸音颗粒，其特征在于：制成所述外壳的材料内添加有防静电材料，或所述外壳的表面涂覆有防静电材料。
  2. 根据权利要求1所述的吸音组件，其特征在于：所述防静电材料为导电材料或抗静电剂。
  3. 根据权利要求2所述的吸音组件，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；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。
  4. 根据权利要求1所述的吸音组件，其特征在于：将所述吸音颗粒表面进行抛光处理，使落粉率wt％≤0.1。
  5. 根据权利要求2所述的吸音组件，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。
  6. 根据权利要求2所述的吸音组件，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。
  7. 根据权利要求1所述的吸音组件，其特征在于：制成所述外壳的材料内添加有所述防静电材料，所述防静电材料的添加量为所述外壳的材料的0.1～10％重量份。
  8. 根据权利要求1至7中任一项所述的吸音组件，其特征在于：所述外壳包括结合在一起的托壳及壳盖。
  9. 根据权利要求8所述的吸音组件，其特征在于：所述托壳与所述壳盖相结合部位的表面及所述壳盖的内侧表面上涂覆有所述防静电材料。
  10. 根据权利要求1至7中任一项所述的吸音组件，其特征在于：所述外壳为由丝网布制成的袋状结构。
  11. 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，所述后声腔内设置有吸音组件，其特征在于：所述吸音组件为权利要求1至10中任一项所述的吸音组件。
PCT/CN2016/112641 2016-05-05 2016-12-28 一种吸音组件及应用该吸音组件的扬声器模组 Ceased WO2017190512A1 (zh)

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