WO2020133320A1 - 扬声器 - Google Patents

扬声器 Download PDF

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Publication number
WO2020133320A1
WO2020133320A1 PCT/CN2018/125243 CN2018125243W WO2020133320A1 WO 2020133320 A1 WO2020133320 A1 WO 2020133320A1 CN 2018125243 W CN2018125243 W CN 2018125243W WO 2020133320 A1 WO2020133320 A1 WO 2020133320A1
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WIPO (PCT)
Prior art keywords
sound
wall
speaker
absorbing
cavity
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Ceased
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PCT/CN2018/125243
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English (en)
French (fr)
Inventor
王延隆
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AAC Technologies Holdings Shenzhen Co Ltd
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AAC Acoustic Technologies Shenzhen Co Ltd
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Priority to PCT/CN2018/125243 priority Critical patent/WO2020133320A1/zh
Publication of WO2020133320A1 publication Critical patent/WO2020133320A1/zh
Anticipated expiration legal-status Critical
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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
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the invention relates to the field of sound and electricity, in particular to a speaker applied to portable electronic products.
  • the speakers of the prior art are often filled with sound-absorbing material in the internal cavity, and then the sound-absorbing material is encapsulated with a breathable gauze, but the capacity of the internal cavity is often limited by its own cover
  • the material and thickness of the board and the too small capacity limit the amount of sound-absorbing material that can be accommodated, which results in the speaker being unable to obtain better acoustic effects.
  • components such as breathable gauze used to encapsulate the sound-absorbing material are easily The shell falls off, causing the sound-absorbing material to enter the internal space of the speaker, thereby seriously affecting the acoustic performance of the speaker.
  • the object of the present invention is to provide a loudspeaker that can greatly increase the size of the internal cavity and effectively prevent sound-absorbing materials from entering the internal space of the loudspeaker.
  • the technical solution of the present invention is:
  • a loudspeaker includes an upper housing, a lower housing that is combined with the upper housing to form an accommodation space, and a speaker unit accommodated in the accommodation space.
  • the speaker unit includes a diaphragm and the vibration
  • the membrane is spaced from the upper casing to form a front cavity.
  • the upper casing includes a top wall opposed to the diaphragm and spaced apart, a side wall extending from the top wall in the direction of the casing, and a free space.
  • the top wall extends away from the top wall and is spaced apart from the side wall.
  • the wall, the side wall, and the top wall enclose an accommodating portion for accommodating the speaker unit.
  • An end of the accommodating part away from the top wall is provided with an air-permeable partition, the air-permeable isolator encapsulates the speaker unit in the accommodating part, and the lower housing is spaced apart from the air-permeable isolator
  • a first sound-absorbing cavity of sound-absorbing material, a side of the retaining wall away from the speaker unit, the side wall and the lower housing form a second sound-absorbing cavity for accommodating the sound-absorbing material, and the first sound-absorbing cavity
  • the cavity is in communication with the second sound-absorbing cavity.
  • the lower casing is provided with a filling hole corresponding to the first sound-absorbing cavity, and the sound-absorbing material is loaded into the first sound-absorbing cavity and the second sound-absorbing cavity through the filling hole.
  • the lower casing is provided with a sealing sheet covering the filling hole.
  • the lower case includes a bottom wall opposite to the top wall, a side plate extending from the bottom wall in a direction corresponding to the top wall, and a side wall extending from the bottom wall into the receiving space
  • a retaining wall corresponds to and welds to the retaining wall
  • the side plate corresponds to and welds to the side wall
  • the air-permeable isolator is fixed to the retaining wall by heat fusion.
  • the lower housing further includes a pressing portion extending from the bottom wall toward the speaker unit, and the air-permeable partition is fixed to the pressing portion.
  • the loudspeaker further includes a buffer
  • the breathable spacer is fixed to the peripheral edge of the pressing portion and a hollowed portion is provided corresponding to the pressing portion
  • the buffering member is disposed below the hollowed portion and resists the In the speaker unit, the pressing part partially passes through the hollowed part and presses against the buffer.
  • the blocking wall is provided with a communication port, and the communication port communicates with the first sound-absorbing cavity and the second sound-absorbing cavity.
  • the retaining wall and the retaining wall, and the side wall and the side plate are fixed by ultrasonic welding or laser welding.
  • the bottom wall includes a plastic body and a metal plate embedded in the plastic body, and the metal plate and the plastic body are integrally formed by injection molding.
  • the upper housing correspondingly opens a sound outlet communicating with the front cavity.
  • the speaker of the present invention can greatly increase the size of the internal cavity and effectively prevent the sound absorbing material from entering the internal space of the speaker, which effectively solves the problem of the existing speaker
  • the volume of the cavity is too small, which limits the amount of sound-absorbing material it can contain, resulting in a technical problem that the speaker cannot obtain better acoustic effects.
  • FIG. 1 is an exploded schematic diagram of the speaker provided by the present invention.
  • FIG. 2 is a schematic structural diagram of an upper casing of a speaker provided by the present invention.
  • FIG. 3 is a schematic structural diagram of a lower housing of a speaker provided by the present invention.
  • FIG. 4 is a schematic diagram of the assembly of the speaker provided by the present invention.
  • FIG. 5 is a cross-sectional view taken along line A-A of the speaker provided by the present invention.
  • FIG. 6 is a cross-sectional view taken along line B-B of the speaker provided by the present invention.
  • a speaker 100 includes an upper housing 11, a lower housing 12 that is grouped with the upper housing 11 to form a receiving space, a speaker unit 13, and a ventilation spacer 14.
  • the upper housing 11 includes a top wall 111 and a side wall 112 extending from the top wall 111 toward the lower housing, and away from the top wall 111 from the top wall 111
  • a retaining wall 113 extending and spaced apart from the side wall 112, the top wall 111, the side wall 112, and the retaining wall 113 enclose an accommodating portion 110 for accommodating the speaker unit 13, and the retaining wall 113 is away from the A side of the speaker unit 13 surrounds the side wall 112 and the lower casing 12 to form a second sound absorbing cavity 114 for accommodating sound absorbing material.
  • the top wall 111 of the upper casing 11 is correspondingly provided with a sound outlet 115.
  • the speaker unit 13 is accommodated in the accommodating portion 110.
  • the speaker unit 13 includes a diaphragm 131 which is opposed to the top wall 111 of the upper housing 11 and spaced apart Cavity 116.
  • the lower housing 12 includes a bottom wall 121 opposite to the top wall 111 of the upper housing 11, and a side plate 122 extending from the bottom wall 121 toward the top wall 111. And a stop wall 123 extending from the bottom wall 121 to the receiving space, the stop wall 123 corresponds to the stop wall 113 and is welded, the side plate 122 corresponds to the side wall 112 and is welded, so The air-permeable partition 14 and the blocking wall 123 are hot-melted and fixed.
  • the air-permeable partition 14 is spaced apart from the lower housing 12 to form a first sound-absorbing cavity 124 for accommodating sound-absorbing materials.
  • the blocking wall 123 is provided with a communication port 125 The communication port 125 communicates with the first sound-absorbing cavity 124 and the second sound-absorbing cavity 114.
  • the lower housing 12 further includes a pressing portion 126 extending from the bottom wall 121 toward the speaker unit 13, and the air-permeable separator 14 is fixed to the pressing portion 126.
  • the bottom wall 121 includes a plastic body 1211 and a metal plate 1212 embedded in the plastic body 1211.
  • the metal plate 1212 and the plastic body 1211 are integrally injection molded by insert molding technology.
  • the lower casing 12 is provided with a filling hole 127 corresponding to the first sound-absorbing cavity 124, and the sound-absorbing material is loaded into the first sound-absorbing cavity 124 and the second sound-absorbing through the filling hole 127 In the cavity 114, a sealing sheet 128 covering the filling hole 127 is further provided on the lower housing 12.
  • the speaker 100 further includes a buffer member 15 that encapsulates the speaker unit 13 in the receiving portion 110, and the breathable spacer 14 corresponds to the The periphery of the pressing portion 126 is fixed and is provided with a hollow portion corresponding to the pressing portion 126, the buffer member 15 is disposed below the hollow portion and bears against the speaker unit 13, and the pressing portion 126 is partially After passing through the hollowed part, it is pressed against the buffer 15.
  • the buffer member 15 is directly attached to the upper or lower side of the air-permeable separator 14 for elastically abutting the lower housing 12 and the The speaker unit 13 described above.
  • the air-permeable isolator 14 is fixed to the retaining wall 123 of the lower housing 12, the upper surface of the hollowed-out part of the air-permeable isolator 14 is fixed to the periphery of the pressing portion 126, and the buffer 15 is fixedly attached below the hollowed-out part of the air-permeable isolator 14, the speaker unit 13 is installed in the receiving space 110 of the upper housing 11, the retaining wall 113 of the upper housing 11 and the lower
  • the baffle wall 123 of the casing 12 and the side wall 112 of the upper casing 11 and the side plate 122 of the lower casing 12 are fixed by ultrasonic welding or laser welding, thereby fixing the upper casing 11 and the lower ⁇ 12 ⁇ The housing 12.
  • a sound-absorbing powder material is injected to fill the first sound-absorbing cavity 124 and the second sound-absorbing cavity 114.
  • the sealing sheet 128 seals the place ⁇ 127.
  • the loudspeaker 100 provided by the present invention has a space for filling sound-absorbing powder material including a first sound-absorbing cavity 124 enclosed by the air-permeable partition 14 and the lower housing 12 and provided in the upper housing 11
  • the second sound-absorbing cavity 114 on the top is in communication with the first sound-absorbing cavity 124, which effectively increases the powder filling space of the speaker and improves the acoustic effect of the speaker.

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

Abstract

一种扬声器，包括上壳体、与所述上壳体组配围成收容空间的下壳体及收容于所述收容空间内的扬声器单体，所述扬声器单体包括振膜，所述上壳体包括顶壁、自所述顶壁朝所述壳体方向延伸的侧壁、以及自所述顶壁朝远离所述顶壁方向延伸并与所述侧壁间隔设置的挡墙，所述挡墙、侧壁及顶壁围成收容所述扬声器单体的收容部，所述顶壁的一端设置有透气隔离件，所述下壳体与所述透气隔离件之间间隔形成收容吸音材料的第一吸音腔，所述挡墙远离所述扬声器单体的一侧与所述侧壁及所述下壳体围成收容所述吸音材料的第二吸音腔，所述第一吸音腔及所述第二吸音腔连通，本发明扬声器增大了扬声器的灌粉空间，提升了扬声器的声学效果。

Description

扬声器 【技术领域】
本发明涉及声电领域，尤其涉及一种应用于便携式电子产品的扬声器。
【背景技术】
在移动设备(如手机、平板电脑或手提电脑)的快速发展过程中，人们对产品的功能要求越来越高，为了使娱乐效果更突出，因此扬声器也越来越多的使用扬声器结合箱体的结构，以获得更好的低频体验。
现有技术的扬声器为了获得更好的声学效果，往往在其内部空腔内填充吸声材料，然后用透气纱网将吸声材料封装起来，但是内部空腔的容量往往受限于其自身盖板的材料与厚度，过小的容量限制其所能容纳的吸声材料的数量，从而导致扬声器无法得到更好的声学效果，进一步，用来封装吸声材料的透气纱网等部件很容易从壳体脱落，造成吸声材料进入扬声器的内部空间，从而严重影响扬声器的声学性能。
因此，有必要提供一种新的结构解决上述技术问题。
【发明内容】
本发明的目的在于提供一种可极大提高内部空腔大小且有效防止吸声材料进入扬声器的内部空间的扬声器。
为解决上述技术问题，本发明的技术方案是：
一种扬声器，包括上壳体、与所述上壳体组配围成收容空间的下壳体及收容于所述收容空间内的扬声器单体，所述扬声器单体包括振膜，所述振膜与所述上壳体间隔形成前腔，所述上壳体包括与所述振膜相对且间隔设置的顶壁、自所述顶壁朝所述壳体方向延伸的侧壁、以及自所述顶壁朝远离所述顶壁方向延伸并与所述侧壁间隔设置的挡墙，所述挡墙、所述侧壁及所述顶壁围成收容所述扬声器单体的收容部，所述收容部远离所述顶壁的一端设置有透气隔离件，所述透气隔离件将所述扬声器单体封装在所述收容部内，所述下壳体与所述透气隔离件之间间隔形成收容吸音材料的第一吸音腔，所述 挡墙远离所述扬声器单体的一侧与所述侧壁及所述下壳体围成收容所述吸音材料的第二吸音腔，所述第一吸音腔及所述第二吸音腔连通。
优选的，所述下壳体对应所述第一吸音腔处贯穿开设有灌装孔，所述吸音材料经所述灌装孔装入所述第一吸音腔和所述第二吸音腔。
优选的，所述下壳体设置有覆盖所述灌装孔的密封片。
优选的，所述下壳体包括与所述顶壁相对的底壁、自所述底壁对应朝所述顶壁方向延伸的侧板、以及自所述底壁延伸至所述收容空间内的挡壁，所述挡壁与所述挡墙对应并焊接，所述侧板与所述侧壁对应并焊接，所述透气隔离件与在所述挡壁热熔固定。
优选的，所述下壳体还包括自所述底壁朝所述扬声器单体延伸的抵压部，所述透气隔离件与所述抵压部固定。
优选的，所述扬声器还包括缓冲件，所述透气隔离件与所述抵压部周缘固定并对应所述抵压部开设有镂空部位，缓冲件设置在所述镂空部位的下方并抵持所述扬声器单体，所述抵压部部分穿过所述镂空部位后抵压至所述缓冲件。
优选的，所述挡壁开设有连通口，所述连通口连通所述第一吸音腔和所述第二吸音腔。
优选的，所述挡墙与所述挡壁、以及所述侧壁与所述侧板通过超声波焊接或者激光焊接固定。
优选的，所述底壁包括塑料本体以及嵌设在所述塑料本体的金属板，所述金属板与所述塑料本体注塑成型为一体。
优选的，所述上壳体对应开设与所述前腔连通的出音口。
本发明的扬声器有益效果：本发明扬声器可极大提高内部空腔大小且有效防止吸声材料进入扬声器的内部空间，其有效解决了现有的扬声器在对收纳吸声粉料时，由于内部空腔的容量过小，从而限制其所能容纳的吸声材料的数量，从而导致扬声器无法得到更好的声学效果的技术问题。
【附图说明】
图1为本发明提供的扬声器的分解示意图；
图2为本发明提供的扬声器的上壳体的结构示意图；
图3为本发明提供的扬声器的下壳体的结构示意图；
图4为本发明提供的扬声器的组装示意图；
图5为本发明提供的扬声器沿A-A线的剖视图；
图6为本发明提供的扬声器沿B-B线的剖视图。
附图标记：100、扬声器；11、上壳体；110、收容部；111、顶壁；112、侧壁；113、挡墙；114、第二吸音腔；115、出音口；116、前腔；12、下壳体；121、底壁；1211、塑料本体；1212、金属板；122、侧板；123、挡壁；124、第一吸音腔；125、连通口；126、抵押部；127、灌装孔；128、密封片；13、扬声器单体；131、振膜；14、透气隔离件；15、缓冲件
【具体实施方式】
为进一步说明各实施例，本发明提供有附图。这些附图为本发明揭露内容的一部分，其主要用以说明实施例，并可配合说明书的相关描述来解释实施例的运作原理。配合参考这些内容，本领域普通技术人员应能理解其他可能的实施方式以及本发明的优点。图中的组件并未按比例绘制，而类似的组件符号通常用来表示类似的组件。
下面将结合附图和实施方式对本发明作进一步说明。
请参见图1，本发明一实施例提供的扬声器100，包括上壳体11、与所述上壳体11组配围成收容空间的下壳体12、扬声器单体13及透气隔离件14。
请参见图2，所述上壳体11包括顶壁111和自所述顶壁111朝所述下壳体方向延伸的侧壁112，以及自所述顶壁111朝远离所述顶壁111方向延伸并与所述侧壁112间隔设置的挡墙113，所述顶壁111、侧壁112和挡墙113围成收容所述扬声器单体13的收容部110，所述挡墙113远离所述扬声器单体13的一侧与所述侧壁112以及所述下壳体12围成收容吸音材料的第二吸音腔114，所述上壳体11的顶壁111对应开设有出音口115。
请一并参见图5，所述扬声器单体13收容于收容部110内，扬声器单体13包括振膜131，所述振膜131与所述上壳体11的顶壁111相对并间隔形成前腔116。
请参见图3和图5，所述下壳体12包括与上壳体11的顶壁111相对的底壁121、自所述底壁121对应朝所述顶壁111方向延伸的侧板122、以及自所述底壁121延伸至所述收容空间内的挡壁123，所述挡壁123与所述挡墙113对应并焊接，所述侧板122与所述侧壁112对应并焊接，所述透气隔离件14与所述挡壁123热熔固定，所述透气隔离件14与所述下壳体12间隔形成收容吸音材料的第一吸音腔124，所述挡壁123开设有连通口125，所述连通口125连通所述第一吸音腔124和第二吸音腔114。
所述下壳体12还包括自所述底壁121朝所述扬声器单体13延伸的抵压部126，所述透气隔离件14与所述抵压部126固定。优选地，所述底壁121包括塑料本体1211以及嵌设在所述塑料本体1211的金属板1212，所述金属板1212与所述塑料本体1211通过嵌件成型技术(insert molding)注塑成型为一体，所述下壳体12对应所述第一吸音腔124处贯穿开设有灌装孔127，所述吸音材料经所述灌装孔127装入所述第一吸音腔124和所述第二吸音腔114，所述下壳体12上还设置有覆盖所述灌装孔127的密封片128。
请一并参阅图5和图6，所述扬声器100还包括缓冲件15，所述缓冲件15将所述扬声器单体13封装在所述收容部110内，所述透气隔离件14对应于所述抵压部126周缘固定并对应所述抵压部126开设有镂空部位，所述缓冲件15设置在所述镂空部位的下方并抵持所述扬声器单体13，所述抵压部126部分穿过所述镂空部位后抵压至所述缓冲件15上。
可以理解地，所述透气隔离件14中间也可不设镂空部位，所述缓冲件15直接附在所述透气隔离件14的上面或下面，用于弹性抵接于所述下壳体12与所述扬声器单体13之间。
安装时，所述透气隔离件14固接于所述下壳体12的挡壁123上，所述透气隔离件14的镂空部位的上表面与所述抵压部126周缘固定，所述缓冲件15固定贴设于所述透气隔离件14的镂空部位下方，所述扬声器单体13安装于所述上壳体11的收容空间110内，所述上壳体11的挡墙113与所述下壳体12的挡壁123、以及所述上壳体11的侧壁112与所述下壳体12的侧板122通过超声波焊接或者激光焊接固接，从而固接所述上壳体11和下壳体12。通 过所述下壳体12的灌装孔127，注入吸声粉料，使其充满所述第一吸音腔124和所述第二吸音腔114，灌粉完毕之后，所述密封片128密封所述灌装孔127。
与现有技术相比，本发明提供的扬声器100，其灌装吸声粉料的空间包括透气隔离件14与下壳体12围成的第一吸音腔124以及设于所述上壳体11上的第二吸音腔114，所述第二吸音腔114与第一吸音腔124连通，有效地增大了扬声器的灌粉空间，提升了扬声器的声学效果。
以上所述的仅是本发明的实施方式，在此应当指出，对本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (10)

  1. 一种扬声器，包括上壳体、与所述上壳体组配围成收容空间的下壳体及收容于所述收容空间内的扬声器单体，所述扬声器单体包括振膜，所述振膜与所述上壳体间隔形成前腔，其特征在于：所述上壳体包括与所述振膜相对且间隔设置的顶壁、自所述顶壁朝所述下壳体方向延伸的侧壁、以及自所述顶壁朝远离所述顶壁方向延伸并与所述侧壁间隔设置的挡墙，所述挡墙、所述侧壁及所述顶壁围成收容所述扬声器单体的收容部，所述收容部远离所述顶壁的一端设置有透气隔离件，所述透气隔离件将所述扬声器单体封装在所述收容部内，所述下壳体与所述透气隔离件之间间隔形成收容吸音材料的第一吸音腔，所述挡墙远离所述扬声器单体的一侧与所述侧壁及所述下壳体围成收容所述吸音材料的第二吸音腔，所述第一吸音腔及所述第二吸音腔连通。
  2. 根据权利要求1所述的扬声器，其特征在于，所述下壳体对应所述第一吸音腔处贯穿开设有灌装孔，所述吸音材料经所述灌装孔装入所述第一吸音腔和所述第二吸音腔。
  3. 根据权利要求2所述的扬声器，其特征在于，所述下壳体设置有覆盖所述灌装孔的密封片。
  4. 根据权利要求1所述的扬声器，其特征在于，所述下壳体包括与所述顶壁相对的底壁、自所述底壁对应朝所述顶壁方向延伸的侧板、以及自所述底壁延伸至所述收容空间内的挡壁，所述挡壁与所述挡墙对应并焊接，所述侧板与所述侧壁对应并焊接，所述透气隔离件与所述挡壁热熔固定。
  5. 根据权利要求4所述的扬声器，其特征在于，所述下壳体还包括自所述底壁朝所述扬声器单体延伸的抵压部，所述透气隔离件与所述抵压部固定。
  6. 根据权利要求5所述的扬声器，其特征在于，所述扬声器还包括缓冲件，所述透气隔离件与所述抵压部周缘固定并对应所述抵压部开设有镂空部位，缓冲件设置在所述镂空部位的下方并抵持所述扬声器单体，所述抵压部部分穿过所述镂空部位后抵压至所述缓冲件。
  7. 根据权利要求4所述的扬声器，其特征在于，所述挡壁开设有连通口，所述连通口连通所述第一吸音腔和所述第二吸音腔。
  8. 根据权利要求4所述的扬声器，其特征在于，所述挡墙与所述挡壁、以及所述侧壁与所述侧板通过超声波焊接或者激光焊接固定。
  9. 根据权利要求4所述的扬声器，其特征在于，所述底壁包括塑料本体以及嵌设在所述塑料本体的金属板，所述金属板与所述塑料本体注塑成型为一体。
  10. 根据权利要求1所述的扬声器，其特征在于，所述上壳体对应开设与所述前腔连通的出音口。
PCT/CN2018/125243 2018-12-29 2018-12-29 扬声器 Ceased WO2020133320A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN106982406A (zh) * 2017-01-22 2017-07-25 瑞声科技(新加坡)有限公司 扬声器箱
CN108124225A (zh) * 2018-02-26 2018-06-05 歌尔股份有限公司 一种扬声器模组以及电子设备
CN108337612A (zh) * 2018-01-04 2018-07-27 瑞声科技(新加坡)有限公司 发声器件
CN207720403U (zh) * 2017-10-23 2018-08-10 上海润欣科技股份有限公司 扬声器箱
CN108551635A (zh) * 2018-05-28 2018-09-18 歌尔股份有限公司 微型扬声器模组

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106982406A (zh) * 2017-01-22 2017-07-25 瑞声科技(新加坡)有限公司 扬声器箱
CN207720403U (zh) * 2017-10-23 2018-08-10 上海润欣科技股份有限公司 扬声器箱
CN108337612A (zh) * 2018-01-04 2018-07-27 瑞声科技(新加坡)有限公司 发声器件
CN108124225A (zh) * 2018-02-26 2018-06-05 歌尔股份有限公司 一种扬声器模组以及电子设备
CN108551635A (zh) * 2018-05-28 2018-09-18 歌尔股份有限公司 微型扬声器模组

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