WO2021189867A1 - 扬声器模组 - Google Patents

扬声器模组 Download PDF

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Publication number
WO2021189867A1
WO2021189867A1 PCT/CN2020/127370 CN2020127370W WO2021189867A1 WO 2021189867 A1 WO2021189867 A1 WO 2021189867A1 CN 2020127370 W CN2020127370 W CN 2020127370W WO 2021189867 A1 WO2021189867 A1 WO 2021189867A1
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WO
WIPO (PCT)
Prior art keywords
cover plate
speaker module
foamed
metal
metal sheet
Prior art date
Application number
PCT/CN2020/127370
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English (en)
French (fr)
Inventor
吴德跃
梁贺
邵明辉
Original Assignee
歌尔股份有限公司
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Publication date
Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Priority to US17/907,317 priority Critical patent/US20230116758A1/en
Publication of WO2021189867A1 publication Critical patent/WO2021189867A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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
    • H04R1/2838—Enclosures comprising vibrating or resonating arrangements of the bandpass type
    • H04R1/2842—Enclosures comprising vibrating or resonating arrangements of the bandpass type for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/023—Screens for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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
    • H04R1/2853—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line
    • H04R1/2857—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/021—Casings; Cabinets ; Supports therefor; Mountings therein incorporating only one transducer
    • 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 belongs to the technical field of loudspeakers, in particular to a loudspeaker module.
  • the speaker module is used to complete the conversion between electrical signals and acoustic signals, and is an energy conversion device.
  • the speaker module includes a housing and a speaker unit contained in the housing space.
  • the speaker unit divides the housing space into a front sound cavity and a rear sound cavity.
  • the shell is made of hard plastic and metal materials, and the area corresponding to the front acoustic cavity is a rigid wall.
  • the damping of the rigid wall is small, the vibration amplitude is small, and the radiation energy is limited, and the cavity energy cannot be effectively transmitted.
  • the front cavity resonance occurs when the speaker module emits sound. Near the high-frequency resonance, the energy is too high, which usually results in obvious amplification and distortion. Noise affects the sense of hearing.
  • the purpose of the present invention is to overcome the above technical problems and provide a loudspeaker module that reduces the front cavity resonance, reduces the resonance peak, and improves the distortion.
  • a speaker module includes a housing and a speaker unit accommodated in the housing space, and the speaker unit divides the housing space into A front acoustic cavity and a rear acoustic cavity, the housing is provided with a through hole penetrating the housing at a position corresponding to the front acoustic cavity, the speaker module further includes a cover plate covering the through hole, the cover plate includes at least one A foam metal layer and a metal sheet layer.
  • the front sound cavity of the speaker module includes a sound guide channel communicating with the outside, and the cover plate is arranged at a position facing the speaker unit and/or a position of the sound guide channel.
  • the cover plate is arranged at a position facing the speaker unit.
  • the cover plate is fixed to the housing by injection molding or bonding.
  • the cover plate includes a foamed metal layer and a metal sheet layer, and the metal sheet layer is arranged on a side close to the speaker unit or a side far away from the speaker unit.
  • the cover plate includes two metal sheet layers and a foam metal layer, and the metal sheet layers are respectively located on both sides of the foam metal layer.
  • the cover plate includes two foam metal layers and a metal sheet layer, and the foam metal layers are respectively located on both sides of the metal sheet layer.
  • the foamed metal may be any one of foamed aluminum, foamed copper, foamed iron, foamed nickel, and foamed alloy.
  • the foamed metal may be in the form of through holes, semi-through holes or closed cells.
  • the foamed metal is in the form of through-holes.
  • the metal sheet may be any one of aluminum, copper, iron, nickel or alloy materials.
  • the thickness of the foamed metal layer is 0.05 mm-1 mm.
  • the thickness of the metal sheet layer is 0.05 mm-1 mm.
  • the speaker module of the utility model has the following beneficial effects:
  • the module housing includes a through hole formed corresponding to the front acoustic cavity area and a cover plate covering the through hole.
  • the cover plate uses a foamed metal layer, which has high modulus, low density and excellent impact energy absorption characteristics It is used to absorb the energy of vibration at a specific resonance frequency, thereby reducing the resonance effect of the speaker module and improving its distortion, thereby improving the acoustic performance of the speaker module.
  • Figure 1 is a schematic diagram of the three-dimensional structure of the speaker module of the present invention.
  • Figure 2 is a schematic diagram of the exploded structure of the speaker module of the present invention.
  • Figure 3 is a cross-sectional view of the speaker module of the present invention along the line A-A.
  • FIG. 4 is a cross-sectional view of the cover plate C of the speaker module according to the first embodiment of the present invention.
  • Fig. 5 is a comparison diagram of the frequency response curve between the first embodiment of the utility model and the prior art.
  • Fig. 6 is a comparison diagram of distortion curves between the first embodiment of the utility model and the prior art.
  • FIG. 7 is a cross-sectional view of the cover plate C of the speaker module according to the second embodiment of the present invention.
  • FIG. 8 is a cross-sectional view of the cover plate C of the speaker module according to the third embodiment of the present invention.
  • the speaker module 100 includes a housing 1 and a speaker unit 2 housed in the housing 1.
  • the housing 1 includes an upper shell 11, a middle shell 12, and a lower shell 10, which are combined to form an accommodation space.
  • the speaker unit 2 is accommodated in the accommodation space.
  • the speaker unit 2 divides the accommodation space into a front acoustic cavity 113 and a rear acoustic cavity 115.
  • the front acoustic cavity 113 also includes a sound guide channel 114 that communicates the front acoustic cavity 113 with the outside.
  • the middle shell 12 is provided with a sound vent (not shown in the figure) through which the rear acoustic cavity 115 communicates with the outside, and the acoustic resistance of the rear acoustic cavity 115 is adjusted to balance the air pressure of the cavity.
  • the side walls of the upper shell 11 and the middle shell 12 enclose a side sound outlet 120, and the side walls of the upper shell 11 and the middle shell 12 are respectively provided with concave grooves at positions facing the speaker unit 2.
  • the side wall corresponding to the middle shell 12 surrounds a side sound outlet 120, and the side sound outlet 120 faces the front sound cavity 113.
  • the upper shell 11 is provided with a through hole 112 passing through the upper shell 11 at a position corresponding to the front acoustic cavity 113.
  • the speaker module 100 further includes a cover plate 13 covering the through hole 112.
  • the upper shell 11 is located at the through hole 112.
  • a groove 1121 is provided, and the cover plate 13 is fixed on the groove 1121, and the cover plate 13 can be fixed on the groove 1121 by bonding or injection molding.
  • the through hole 112 and the speaker unit 2 are arranged directly opposite to each other.
  • the through hole 112 may also be arranged at the position of the sound guide channel 114, or at the same time, it may be arranged opposite to the speaker unit 2. The position and the position of the sound guide channel 114.
  • the thickness of the cover plate 13 is smaller than that of the upper shell 11, which can increase the space of the front acoustic cavity 113 of the speaker module 100, thereby improving the acoustic performance of the sound generating device.
  • the cover plate 13 of this embodiment adopts a foamed metal layer 132 and two metal sheet layers 131.
  • the metal sheet layer 131 is bonded to both sides of the foamed metal layer 132, that is, the two sides of the cover plate 13 are metal sheet layers 131.
  • the two metal sheet layers 131 may be the same metal sheet or two different metal sheets.
  • the foamed metal may be any one or more of foamed aluminum, foamed copper, foamed iron, foamed nickel, and foamed alloys
  • the metal sheet may be any one of aluminum, copper, iron, nickel or alloy materials .
  • technicians can choose one or several composite materials to use according to the different characteristics of the material and the specific needs of the product.
  • the thickness of the foamed metal layer is in the range of 0.05mm-1mm, and the thickness of the metal sheet layer is in the range of 0.05mm-1mm.
  • the foam metal can be in the form of through-holes, semi-through-holes or closed-cells.
  • the through-hole form is preferred, which helps to reduce the density of the cover plate, reduce the quality of the cover plate, improve the modulus-density ratio of the cover plate, and reduce the front acoustic cavity resonance 4 and 5, compared with the prior art, the frequency response curve and distortion curve of the speaker module of this embodiment between 4 kHz and 5 kHz are significantly improved.
  • the speaker unit 2 also includes a magnetic circuit system.
  • the magnetic circuit system includes a yoke 221, a magnetic steel housed in the yoke, and a pole core attached to the magnetic steel.
  • the lower shell 10 corresponds to the yoke 221 with a through hole 101 penetrating the shell.
  • the bottom surface of the yoke 221 leaks out of the lower shell 10, and the bottom surface of the yoke 221 and the bottom surface of the lower shell 10 are located on the same horizontal plane.
  • the cover plate 13 of the second embodiment of the present invention includes a metal sheet layer 131 and a foam metal layer 132, and the metal sheet layer 131 is bonded to the upper surface of the foam metal layer 132.
  • the difference from the first embodiment is that the cover plate 13 has a two-layer structure, the upper surface of the cover plate 13 is a metal sheet layer 131, and the lower surface is a foam metal layer 132.
  • the cover plate 13 of the third embodiment of the present invention includes a metal sheet layer 131 and two foam metal layers 132, and the foam metal layer 132 is bonded to both sides of the metal sheet layer 131.
  • the difference from the first embodiment is that the two side surfaces of the cover plate 13 are foamed metal layers 132, and the middle layer is a metal sheet layer 131.
  • the cover plate 13 of the present invention adopts a foamed metal layer 132, which utilizes the porous structure of the foamed metal and excellent impact energy absorption characteristics to absorb the energy of vibration at a specific resonance frequency, thereby weakening the speaker module The resonance effect and the improvement of its distortion, thereby improving the acoustic performance of the speaker module.
  • the housing structure is not limited to the housing structure described in the above embodiments.
  • the upper shell and the middle shell of the speaker module may be an integrated structure , That is, the speaker module has only an upper shell and a lower shell to form a housing space for accommodating the speaker unit.
  • the side wall of the shell is provided with a side sound hole corresponding to the position of the front cavity to emit sound.
  • the structure of the cover plate is not limited to the above-mentioned embodiments. Various changes can be made to the present invention in form and details.
  • the cover plate can also be other multilayer composite structures, which can include multiple layers of metal sheets and multiple layers of foamed metal. The metal sheet layer and the foamed metal layer are arranged at intervals.

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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)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

本实用新型提供了一种扬声器模组，包括壳体和收容于所述壳体空间内的扬声器单体，所述扬声器单体将所述壳体空间分隔为前声腔和后声腔，所述壳体上对应所述前声腔的位置设有贯穿壳体的通孔，所述扬声器模组还包括覆盖所述通孔的盖板，所述盖板至少包含一层泡沫金属层和一层金属片层。与相关技术相比，所述盖板采用泡沫金属层，减弱所述扬声器模组的共振效果以及降低其失真，进而提高了所述扬声器模组的声学性能。

Description

扬声器模组 技术领域
本实用新型属于扬声器技术领域，尤其涉及一种扬声器模组。
背景技术
随着科学技术飞速发展，消费者对电子产品的要求越来越高，基于消费者对于电子产品的要求，手机等电子产品的设计趋于轻薄化。扬声器模组作为便携式电子设备的重要声学部件，用于完成电信号与声信号之间的转换，是一种能量转换器件。
扬声器模组包括壳体和收容于所述壳体空间内的扬声器单体，扬声器单体将所述壳体空间分隔为前声腔和后声腔。现有技术中，壳体采用坚硬的塑质材料和金属材料制成，前声腔对应的区域为刚性壁。刚性壁的阻尼小，并且振动幅度小，辐射能量有限，无法将腔体能量有效传播出去，扬声器模组发声时产生前腔谐振，在高频谐振附近，能量过高，通常会明显放大失真及噪声，影响听感。
因此，有必要提供一种新的扬声器模组解决上述技术问题。
发明内容
本实用新型的目的是克服上述技术问题，提供一种减弱前腔谐振、降低谐振峰、改善失真的扬声器模组。
为解决上述技术问题，本实用新型是这样实现的，一种扬声器模组，包括壳体和收容于所述壳体空间内的扬声器单体，所述扬声器单体将所述壳体空间分隔为前声腔和后声腔，所述壳体上对应所述前声腔的位置设有贯穿壳体的通孔，所述扬声器模组还包括覆盖所述通孔的盖板，所述盖板至少包含一层泡沫金属层和一层金属片层。
优选地，所述扬声器模组的所述前声腔包括与外界连通的导声通道，所述盖板设置于正对所述扬声器单体的位置和/或所述导声通道的位置。
优选地，所述盖板设置于正对所述扬声器单体的位置。
优选地，所述盖板注塑或粘接固定于所述壳体。
优选地，所述盖板包括一层泡沫金属层和一层金属片层，所述金属片层设于靠近所述扬声器单体的一侧或者远离所述扬声器单体的一侧。
优选地，所述盖板包括两层金属片层和一层泡沫金属层，所述金属片层分别位于所述泡沫金属层的两侧表面。
优选地，所述盖板包括两层泡沫金属层和一层金属片层，所述泡沫金属层分别位于所述金属片层的两侧表面。
优选地，所述泡沫金属可以为泡沫铝、泡沫铜、泡沫铁、泡沫镍、泡沫合金中的任意一种。
优选地，所述泡沫金属可以是通孔、半通孔或者闭孔形态。
优选地，所述泡沫金属是通孔形态。
优选地，所述金属片可以为铝、铜、铁、镍或合金材料中的任意一种。
优选地，所述泡沫金属层的厚度为0.05mm-1mm。
优选地，所述金属片层的厚度为0.05mm-1mm。
本实用新型中扬声器模组与现有技术相比，有益效果在于：
模组壳体包括对应所述前声腔区域形成的通孔和覆盖所述通孔的盖板，所述盖板采用泡沫金属层，泡沫金属具有高模量、低密度和优异的冲击能量吸收特性，用于吸收特定谐振频率下的振动的能量，从而减弱所述扬声器模组的共振效果以及改善其失真，进而提高了所述扬声器模组的声学性能。
附图说明
图1为本实用新型扬声器模组立体结构示意图。
图2为本实用新型扬声器模组分解结构示意图。
图3为本实用新型扬声器模组沿A-A线的剖视图。
图4为本实用新型实施例一扬声器模组盖板C处的剖视图。
图5为本实用新型实施例一与现有技术频响曲线对比图。
图6为本实用新型实施例一与现有技术失真曲线对比图。
图7为本实用新型实施例二扬声器模组盖板C处的剖视图。
图8为本实用新型实施例三扬声器模组盖板C处的剖视图。
具体实施方式
现在将参照附图来详细描述本实用新型的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和“上”、“下”等描述结构位置的词语，仅针对本实用新型部件的放置方式，并不限制本实用新型的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本实用新型及其应用或使用的任何限制。在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。对于本领域的技术人员来说，本实用新型可以有各种更改和变化。凡在本实用新型的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本实用新型的保护范围之内。
实施例一
请结合参阅图1、图2、图4，扬声器模组100包括壳体1、收容于壳体1内的扬声器单体2。壳体1包括上壳11、中壳12和下壳10，合围成收容空间，扬声器单体2收容于收容空间内，扬声器单体2将收容空间分隔为前声腔113和后声腔115，所述前声腔113还包括连通前声腔113与外界的导声通道114。所述中壳12开设后声腔115与外界导通的泄声孔(图中未示出)，调节后声腔115声阻，平衡腔体气压。
如图2和图4，上壳11侧壁和中壳12侧壁围合成侧出声孔120，上壳11和中壳12的一侧侧壁正对扬声器单2的位置各设有凹型槽，上壳11盖合于 所述中壳12之后，与中壳12相对应的侧壁围合成侧出声孔120，所述侧出声孔120正对前声腔113。上壳11上对应前声腔113的位置设有贯穿上壳11的通孔112，所述扬声器模组100还包括覆盖通孔112的盖板13，所述上壳11在所述通孔112处设有凹槽1121，所述盖板13固定在凹槽1121上，盖板13可通过粘接或者注塑的方式固定在凹槽1121上。
优选的，所述通孔112与所述扬声器单体2正对设置，当然，所述通孔112还可以设置于所述导声通道114的位置，也可以同时设置于正对扬声器单体2的位置和导声通道114的位置。
另外，盖板13的厚度相对于上壳11的厚度较小，可以增大扬声器模组100的前声腔113的空间，进而提升发声装置的声学性能。
本实施例盖板13采用一层泡沫金属层132和两层金属片层131，金属片层131粘接在泡沫金属层132的两侧表面，即盖板13的两侧表面是金属片层131，两层金属片层131可以为同一种金属片也可以为两种不同的金属片。
所述泡沫金属可以为泡沫铝、泡沫铜、泡沫铁、泡沫镍、泡沫合金中的任意一种或者多种，所述金属片可以为铝、铜、铁、镍或合金材料中的任意一种。实际使用中，技术人员可以根据材料不同的特性及产品具体的需求选择其中一种或几种复合材料使用。
为减小盖板整体厚度，泡沫金属层厚度范围为0.05mm-1mm，金属片层厚度范围为0.05mm-1mm。
泡沫金属可以为通孔、半通孔或闭孔形态，本实施例优选通孔形态，有助于降低盖板密度，减轻盖板质量，提升盖板的模量密度比，减小前声腔谐振，参照图4和图5，相比于现有技术，本实施例扬声器模组在4kHz-5kHz之间的频响曲线和失真曲线得到明显改善。
扬声器单体2还包括磁路系统，所述磁路系统包括磁轭221和容置于磁轭的磁钢和贴设于磁钢上的极芯，为减小扬声器模组整体高度，增大磁路系统空间，下壳10对应磁轭221开设贯穿壳体的通孔101，磁轭221底面外漏于下壳10，并且磁轭221底面与下壳10底面位于同一水平面。
实施例二
请参阅图7所示，本实用新型实施例二的盖板13包括一层金属片层131和一层泡沫金属层132，金属片层131粘接于泡沫金属层132的上表面。和实施例一的区别是盖板13为两层结构，盖板13的上表面为金属片层131，下表面为泡沫金属层132。
实施例三
请参阅图8所示，本实用新型实施例三的盖板13包括一层金属片层131和两层泡沫金属层132，泡沫金属层132粘接于金属片层131的两侧表面。和实施例一的区别是盖板13的两侧表面为泡沫金属层132，中间层为金属片层131。
与相关技术相比，本实用新型盖板13采用泡沫金属层132，利用泡沫金属的多孔结构和优异的冲击能量吸收特性，吸收特定谐振频率下的振动的能量，从而减弱所述扬声器模组的共振效果以及改善其失真，进而提高了所述扬声器模组的声学性能。
上述实施方式是本实用新型的具体实施方式，实际应用中，壳体结构不限于上述实施例所述壳体结构，其他的实施例中，扬声器模组的上壳和中壳可以为一体式结构，即扬声器模组只有上壳和与下壳，围合成收容扬声器单体的收容空间，上壳顶壁对应前声腔位置开设贯穿壳体的通孔，盖板盖设于所述通孔，上壳侧壁对应前腔位置开设侧出声孔出声。
盖板的结构也不限于上述实施例，可以在形式和细节上对本实用新型做各种改变，例如，盖板也可以是其他多层复合结构，可以包括多层金属片层和多层泡沫金属层，金属片层和所述泡沫金属层间隔设置。
凡在本实用新型基础构思之上做出的各种变换，实现本实用新型所述的技术效果，皆在本实用新型保护范围之内。

Claims (13)

  1. 一种扬声器模组，包括壳体和收容于所述壳体空间内的扬声器单体，所述扬声器单体将所述壳体空间分隔为前声腔和后声腔，所述壳体上对应所述前声腔的位置设有贯穿壳体的通孔，所述扬声器模组还包括覆盖所述通孔的盖板，所述盖板至少包含一层泡沫金属层和一层金属片层。
  2. 如权利要求1所述的扬声器模组，其特征在于，所述扬声器模组的所述前声腔包括与外界连通的导声通道，所述盖板设置于正对所述扬声器单体的位置和/或所述导声通道的位置。
  3. 如权利要求2所述的扬声器模组，其特征在于，所述盖板设置于正对所述扬声器单体的位置。
  4. 如权利要求3所述的扬声器模组，其特征在于，所述盖板注塑或粘接于所述壳体。
  5. 如权利要求1所述的扬声器模组，其特征在于，所述盖板包括一层泡沫金属层和一层金属片层，所述金属片层设于靠近所述扬声器单体的一侧或者远离所述扬声器单体的一侧。
  6. 如权利要求1所述的扬声器模组，其特征在于，所述盖板包括两层金属片层和一层泡沫金属层，所述金属片层分别位于所述泡沫金属层的两侧表面。
  7. 如权利要求1所述的扬声器模组，其特征在于，所述盖板包括两层泡沫金属层和一层金属片层，所述泡沫金属层分别位于所述金属片层的两侧表面。
  8. 如权利要求1所述的扬声器模组，其特征在于，所述泡沫金属可以为泡沫铝、泡沫铜、泡沫铁、泡沫镍、泡沫合金中的任意一种。
  9. 如权利要求1所述的扬声器模组，其特征在于，所述泡沫金属可以是通孔、半通孔或者闭孔形态。
  10. 如权利要求9所述的扬声器模组，其特征在于，所述泡沫金属是通孔形态。
  11. 如权利要求1所述的扬声器模组，其特征在于，所述金属片可以为铝、铜、铁、镍或合金材料中的任意一种。
  12. 如权利要求1所述的扬声器模组，其特征在于，所述泡沫金属层的厚度为0.05mm-1mm。
  13. 如权利要求1所述的扬声器模组，其特征在于，所述金属片层的厚度为0.05mm-1mm。
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