WO2020062698A1 - 一种扬声器模组 - Google Patents

一种扬声器模组 Download PDF

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Publication number
WO2020062698A1
WO2020062698A1 PCT/CN2018/125750 CN2018125750W WO2020062698A1 WO 2020062698 A1 WO2020062698 A1 WO 2020062698A1 CN 2018125750 W CN2018125750 W CN 2018125750W WO 2020062698 A1 WO2020062698 A1 WO 2020062698A1
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module
case
cavity
porous ceramic
ceramic sheet
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PCT/CN2018/125750
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English (en)
French (fr)
Inventor
李承伟
李振军
高远
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歌尔股份有限公司
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Publication of WO2020062698A1 publication Critical patent/WO2020062698A1/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 
    • 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 relates to the technical field of acoustic-electric conversion. More specifically, it relates to a speaker module.
  • Existing speaker modules usually include a module case and a speaker unit provided in the module case.
  • the speaker unit divides the cavity surrounded by the module case into a front acoustic cavity and a rear acoustic cavity.
  • the speaker unit includes a vibration component and a magnetic circuit component.
  • the vibration component includes a fixed diaphragm and a voice coil. After the voice coil inputs a current, it vibrates under the amperage of the magnetic field formed by the magnetic circuit component to drive the diaphragm to generate sound.
  • a sound absorbing material is provided in the rear acoustic cavity.
  • the current speaker module usually uses a breathable spacer to divide the rear acoustic cavity into a first cavity and a second cavity.
  • the second cavity is filled with sound-absorbing material.
  • the breathable spacer has a breathable function and also prevents the sound-absorbing material from entering. Speaker alone.
  • most of the air-permeable spacers adopt a solution such as a support injection molding mesh cloth or a post-installed ceramic sheet or a metal mesh, and the process is complicated.
  • the purpose of the utility model is to provide a speaker module, in which a porous ceramic sheet and a module housing are integrally injection-molded, thereby improving the sound quality adjustment effect of the rear acoustic cavity and reducing the process complexity.
  • the utility model discloses a speaker module, which includes a module case and a speaker unit provided in the module case.
  • the speaker unit divides a cavity surrounded by the module case into a front acoustic cavity and A rear acoustic cavity
  • the module housing is further provided with a breathable partition that divides the rear acoustic cavity into a first cavity and a second cavity
  • the second cavity is filled with a sound absorbing material
  • the breathable spacer The porous ceramic sheet is integrally injection-molded with the module case.
  • a plurality of ventilation holes are formed on the porous ceramic sheet, and the pore diameters of the plurality of ventilation holes are between 0.03 and 0.15 mm.
  • the thickness of the porous ceramic sheet is between 0.03-0.4 mm.
  • a part of the edge region of the porous ceramic sheet is integrally injection-molded with the module case, and another part of the edge region is sealed with the module case.
  • the module case includes a module upper case, a module middle case, and a module lower case
  • the speaker unit and the module upper case surround the front acoustic cavity
  • the speaker unit and the unit The module upper shell, the module middle shell, and the module lower shell surround the rear acoustic cavity.
  • a part of the edge region of the porous ceramic sheet is integrally injection-molded with the middle shell of the module, and the other part of the edge region is sealed with the lower shell of the module.
  • the middle shell of the module includes a bottom wall and a side wall extending relative to the bottom wall, the side wall includes a first side wall and a second side wall opposite to each other, and the porous ceramic sheet is rectangular and includes sequential connection.
  • the seal is configured as a rubberized seal.
  • an elastic pad is provided between the module lower case and the porous ceramic sheet, and the elastic pad is compressed to seal the module lower case and the porous ceramic sheet.
  • the elastic pad is fixed on the module lower case or the porous ceramic sheet.
  • the porous ceramic sheet of the utility model is directly injection-molded with the speaker module housing, which can achieve the effect of isolating sound-absorbing materials and venting without assembly, reducing the complexity of the process.
  • the ceramic has a high opening porosity. Forces oscillate in the stomata, and vibration is subject to friction and obstruction, which suppresses the propagation of sound waves, attenuates the sound, thereby acting as a sound absorber and improving the low-frequency acoustic performance of the speaker module.
  • FIG. 1 shows an exploded view of a specific embodiment of the speaker module of the present invention.
  • FIG. 2 shows an outline diagram of a specific embodiment of the speaker module of the present invention.
  • Fig. 3 is a schematic cross-sectional view taken along the A-A direction in Fig. 2.
  • FIG. 4 is an enlarged schematic diagram of a region B in FIG. 3.
  • module upper case 12, module middle case, 13, module lower case, 2, porous ceramic sheet, 21, ventilation hole, 3, speaker unit, 31, vibration component, 32, magnetic circuit component, 4 ,glue.
  • Figures 1-4 show a specific embodiment of a speaker module.
  • the speaker module includes a module case and a speaker unit 3 provided in the module case.
  • the speaker unit 3 The cavity surrounded by the module casing is divided into a front acoustic cavity and a rear acoustic cavity, and the module casing is provided with a breathable spacer that divides the rear acoustic cavity into a first cavity and a second cavity.
  • the second cavity is filled with a sound absorbing material, wherein the air-permeable spacer is a porous ceramic sheet 2.
  • the porous ceramic sheet 2 is directly injection-molded with the speaker module casing, which can achieve the effect of isolating sound-absorbing materials and venting without assembly, reducing the complexity of the process, and the ceramic has a high porosity of openings. Forced oscillations in very small pores, vibrations are subject to friction and obstruction, which inhibits the propagation of sound waves, attenuates the sound, thereby absorbing sound and improving the low-frequency acoustic performance of the speaker module.
  • the porous ceramic sheet 2 is formed with a plurality of ventilation holes 21, and the sound-absorbing material is preferably selected from sound-absorbing particles.
  • the diameter of the ventilation holes 21 of the porous ceramic sheet 2 should be smaller than the diameter of the sound-absorbing particles to prevent the sound-absorbing material from entering through the air-permeable spacer.
  • the thickness of the porous ceramic sheet 2 may preferably be set between 0.03 and 0.4 mm to better adjust the acoustic performance of the speaker.
  • a part of the edge region of the porous ceramic sheet 2 may be integrally injection-molded with the module case.
  • the other edge region of the porous ceramic sheet 2 can be sealed with the rear-mounted module shell, so that the porous ceramic sheet 2 separates the cavity formed by the assembled module shell into a first cavity and a second cavity. Play a role in isolating sound-absorbing materials.
  • the module case includes a module upper case 11, a module middle case 12, and a module lower case 13, a module upper case 11, a module middle case 12, and a module.
  • the lower shells 13 collectively form a cavity for receiving the speaker unit 3.
  • the speaker unit 3 and the module upper shell 11 surround a front sound cavity for sound generation, and the speaker unit 3 and the module upper shell 11, the module middle shell 12, and the module lower
  • the shell 13 surrounds a rear acoustic cavity, which is used to adjust the sound quality of the sound generator and improve the low-frequency acoustic performance of the speaker.
  • the module lower case 13 is formed of a metal material.
  • the speaker unit 3 fixed in the module case may include a vibration component 31 and a magnetic circuit component 32.
  • the vibration component 31 vibrates and emits sound when the magnetic circuit component 32 forms a magnetic field.
  • a part of the edge region of the porous ceramic sheet 2 may be integrally injection-molded with the module middle shell 12 when the middle shell 12 of the module is injection-molded, and another part of the edge region may be under the module.
  • the shell 13 is sealed with the module lower shell 13 during assembly.
  • the module shell 12 is assembled with the module upper shell 11 and the module lower shell 13 to form a module shell, and the module lower shell 13 and the porous ceramic sheet 2 are simultaneously assembled.
  • the hermetic seal separates the rear acoustic cavity into a first cavity and a second cavity.
  • the module case 12 may include a bottom wall and a side wall extending relative to the bottom wall, and the side wall may include a first side wall and a second side wall.
  • the porous ceramic sheet 2 may be provided in a rectangular shape.
  • the porous ceramic sheet 2 includes four edge regions, namely a first edge, a second edge, a third edge, and a fourth edge, which are sequentially connected. Three sides can be integrally injection-molded with the middle shell 12 of the module, and the fourth side can be sealed with the lower shell 13 of the module.
  • the sealing arrangement between the porous ceramic sheet 2 and the module lower shell 13 may be a glue seal, that is, after the porous ceramic sheet 2 and the module middle shell 12 are integrally injection-molded, the porous ceramic sheet 2 is used for the porous ceramic sheet 2.
  • glue is applied on the surface sealed with the module lower case 13, the module lower case 13 and the module middle case 12 are fixed and fixed, as shown in FIG. 4, the porous ceramic sheet 2 and the module lower case 13 can be glued. 4 bonding, thereby eliminating the gap between the module lower shell 13 and the porous ceramic sheet 2 to achieve a sealed setting.
  • an elastic pad may be provided between the module lower case 13 and the porous ceramic sheet 2, and the elastic pad is subjected to the assembly when the module lower case 13 and the module middle case 12 are assembled. Compression to eliminate the gap between the module lower case 13 and the porous ceramic sheet 2, and seal the module lower case 13 and the porous ceramic sheet 2.
  • the spring pad is preferably fixed on the porous ceramic sheet 2 or on the module lower case 13.

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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

本实用新型公开了一种扬声器模组，包括模组外壳及设于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空腔分为前声腔和后声腔，所述模组外壳中还设有将所述后声腔分为第一腔体和第二腔体的透气隔离件，所述第二腔体中填充有吸音材料，所述透气隔离件为与所述模组外壳一体注塑的多孔陶瓷片，本实用新型可降低隔离件设置的工艺复杂度，提高扬声器模组的低频声学性能。

Description

一种扬声器模组 技术领域
本实用新型涉及声电转换技术领域。更具体地，涉及一种扬声器模组。
背景技术
现有的扬声器模组通常包括模组外壳及设于模组外壳中扬声器单体，扬声器单体将模组外壳围成的空腔分为前声腔和后声腔。扬声器单体包括振动组件和磁路组件。其中，振动组件包括固定在一起的振膜和音圈，音圈输入电流后，在磁路组件形成的磁场的安培力作用下振动进而带动振膜振动发声。为了调节扬声器的声学性能，通过在后声腔内设置吸音材料。目前的扬声器模组中通常采用一个透气隔离件将后声腔分为第一空腔和第二腔腔，在第二空腔中填充吸音材料，透气隔离件具有透气功能，同时也防止吸音材料进入扬声器单体中。目前的透气隔离件大多采用支撑件注塑网布或后装陶瓷片或金属网等方案，工艺复杂。
实用新型内容
本实用新型的目的在于提供一种扬声器模组，将多孔陶瓷片与模组外壳一体注塑，提高后声腔的音质调节效果，并降低工艺复杂度。
为达到上述目的，本实用新型采用下述技术方案：
本实用新型公开了一种扬声器模组，包括模组外壳及设于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空腔分为前声腔和后声腔，所述模组外壳中还设有将所述后声腔分为第一腔体和第二腔体的透气隔离件，所述第二腔体中填充有吸音材料，所述透气隔离件为与所述模组外壳一体注塑的多孔陶瓷片。
优选地，所述多孔陶瓷片上形成有多个透气孔，所述多个透气孔的孔径在0.03～0.15mm之间。
优选地，所述多孔陶瓷片的厚度在0.03-0.4mm之间。
优选地，所述多孔陶瓷片的一部分边缘区域与所述模组外壳一体注塑，另一部分边缘区域与模组外壳密封设置。
优选地，所述模组外壳包括模组上壳、模组中壳和模组下壳，所述扬声器 单体与所述模组上壳围成所述前声腔，所述扬声器单体与所述模组上壳、模组中壳和模组下壳围成所述后声腔。
优选地，所述多孔陶瓷片的一部分边缘区域与所述模组中壳一体注塑，另一部分边缘区域与模组下壳密封设置。
优选地，所述模组中壳包括底壁和相对于底壁延伸的侧壁，所述侧壁包括相对的第一侧壁和第二侧壁，所述多孔陶瓷片为矩形，包括依次连接的第一边、第二边、第三边和第四边，其中，第一边、第二边和第三边与模组中壳一体注塑，第四边与所述模组下壳密封设置。
优选地，所述密封设置为涂胶密封。
优选地，所述模组下壳与所述多孔陶瓷片间设有弹垫，所述弹垫受压缩以密封设置所述模组下壳与所述多孔陶瓷片。
优选地，所述弹垫固定于所述模组下壳或所述多孔陶瓷片上。
本实用新型的有益效果如下：
本实用新型多孔陶瓷片直接与扬声器模组外壳注塑，无需组装即可实现隔离吸音材料并透气的效果，降低工艺复杂度，同时陶瓷具有高开口气孔率，当声波传入时，在很小的气孔内受力振荡，振动受到摩擦和阻碍，使声波传播受到抑制，导致声音衰减，从而起到吸音作用，可提高扬声器模组的低频声学性能。
附图说明
下面结合附图对本实用新型的具体实施方式作进一步详细的说明。
图1示出本实用新型扬声器模组一个具体实施例的分解示意图。
图2示出本实用新型扬声器模组一个具体实施例的外形示意图。
图3示出图2中沿A-A方向的剖面示意图。
图4示出图3中B区域的放大示意图。
附图标记：
11、模组上壳，12、模组中壳，13、模组下壳，2、多孔陶瓷片，21、透气孔，3、扬声器单体，31、振动组件，32、磁路组件，4、胶水。
具体实施方式
为了更清楚地说明本实用新型，下面结合优选实施例和附图对本实用新型做进一步的说明。附图中相似的部件以相同的附图标记进行表示。本领域技 术人员应当理解，下面所具体描述的内容是说明性的而非限制性的，不应以此限制本实用新型的保护范围。
图1-4示出了一种扬声器模组的一个具体实施例，本实施例中，扬声器模组包括模组外壳及设于所述模组外壳内的扬声器单体3，所述扬声器单体3将所述模组外壳围成的空腔分为前声腔和后声腔，所述模组外壳中设有将所述后声腔分为第一腔体和第二腔体的透气隔离件，所述第二腔体中填充有吸音材料，其特征在于，所述透气隔离件为多孔陶瓷片2。
本实用新型中，多孔陶瓷片2直接与扬声器模组外壳注塑，无需组装即可实现隔离吸音材料并透气的效果，降低工艺复杂度，同时陶瓷具有高开口气孔率，当声波传入时，在很小的气孔内受力振荡，振动受到摩擦和阻碍，使声波传播受到抑制，导致声音衰减，从而起到吸音作用，可提高扬声器模组的低频声学性能。
所述多孔陶瓷片2上形成有多个透气孔21，吸音材料优选地可选择吸音颗粒，多孔陶瓷片2的透气孔21的直径应小于吸音颗粒的直径，防止吸音材料穿过透气隔离件进入扬声器单体3。由此，所述多个透气孔21的孔径可设置为0.03～0.15mm之间，以起到隔离吸间材料的作用。
考虑到陶瓷片对气流的作用，所述多孔陶瓷片2的厚度优选地可设置为0.03-0.4mm之间，以更好地调节扬声器的声学性能。
在一个优选地实施方式中，多孔陶瓷片2与模组外壳一体注塑时，可先将所述多孔陶瓷片2的一部分边缘区域与所述模组外壳一体注塑，在组装形成模组外壳时，多孔陶瓷片2的另一部分边缘区域可与后装的模组外壳部分密封设置，以使多孔陶瓷片2将组装后的模组外壳形成的空腔分隔为第一空腔和第二空腔，起到隔离吸音材料的作用。
优选地，本实施例中，如图1所示，模组外壳包括模组上壳11、模组中壳12和模组下壳13，模组上壳11、模组中壳12和模组下壳13共同形成收容扬声器单体3的空腔。具体的，所述扬声器单体3与所述模组上壳11围成用于发声的前声腔，所述扬声器单体3与所述模组上壳11、模组中壳12和模组下壳13围成后声腔，该后声腔用于调节发声器的音质，改善扬声器的低频声学性能。在本实施例中，模组下壳13为金属材料形成的，在模组中壳12注塑成型后，将模组上壳11和模组下壳13与模组中壳12一共固定形成模组外壳。固定在模组外壳中的扬声器单体3可包括振动组件31和磁路组件32，振动组件31在磁路组件32形成有磁场的作用下振动发声。
由此，优选地，本实施例中，所述多孔陶瓷片2的一部分边缘区域可在模组中壳12注塑时与所述模组中壳12一体注塑，另一部分边缘区域可在模组下壳13组装时与模组下壳13密封设置，在模组中壳12与模组上壳11以及模组下壳13共同组装形成模组外壳的同时通过模组下壳13与多孔陶瓷片2的密封使后声腔分隔为第一空腔和第二空腔。
具体的，模组中壳12可包括底壁和相对于底壁延伸的侧壁，所述侧壁可相对的包括第一侧壁和第二侧壁。所述多孔陶瓷片2可设置为矩形，多孔陶瓷片2包括依次连接的第一边、第二边、第三边和第四边四个边缘区域，其中，第一边、第二边和第三边可与模组中壳12一体注塑，第四边可与所述模组下壳13密封设置。
在一个优选地实施方式中，多孔陶瓷片2和模组下壳13间的密封设置方式可为涂胶密封，即多孔陶瓷片2与模组中壳12一体注塑后，在多孔陶瓷片2用于与模组下壳13密封设置的表面上涂胶，模组下壳13与模组中壳12盖合固定时，如图4所示，多孔陶瓷片2与模组下壳13可通过胶水4粘接，从而消除模组下壳13与多孔陶瓷片2间的间隙，实现密封设置。
在另一个优选地实施方式中，也可在所述模组下壳13与所述多孔陶瓷片2间设置弹垫，所述弹垫在模组下壳13与模组中壳12组装时受压缩以消除模组下壳13与多孔陶瓷片2间的间隙，密封设置所述模组下壳13与所述多孔陶瓷片2。其中，弹垫优选地可固定在多孔陶瓷片2上，也可固定在模组下壳13上。
显然，本实用新型的上述实施例仅仅是为清楚地说明本实用新型所作的举例，而并非是对本实用新型的实施方式的限定，对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动，这里无法对所有的实施方式予以穷举，凡是属于本实用新型的技术方案所引伸出的显而易见的变化或变动仍处于本实用新型的保护范围之列。

Claims (10)

  1. 一种扬声器模组，包括模组外壳及设于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空腔分为前声腔和后声腔，所述模组外壳中还设有将所述后声腔分为第一腔体和第二腔体的透气隔离件，所述第二腔体中填充有吸音材料，其特征在于，所述透气隔离件为与所述模组外壳一体注塑的多孔陶瓷片。
  2. 根据权利要求1所述的扬声器模组，其特征在于，所述多孔陶瓷片上形成有多个透气孔，所述多个透气孔的孔径在0.03～0.15mm之间。
  3. 根据权利要求1所述的扬声器模组，其特征在于，所述多孔陶瓷片的厚度在0.03-0.4mm之间。
  4. 根据权利要求1所述的扬声器模组，其特征在于，所述多孔陶瓷片的一部分边缘区域与所述模组外壳一体注塑，另一部分边缘区域与模组外壳密封设置。
  5. 根据权利要求4所述的扬声器模组，其特征在于，所述模组外壳包括模组上壳、模组中壳和模组下壳，所述扬声器单体与所述模组上壳围成所述前声腔，所述扬声器单体与所述模组上壳、模组中壳和模组下壳围成所述后声腔。
  6. 根据权利要求5所述的扬声器模组，其特征在于，所述多孔陶瓷片的一部分边缘区域与所述模组中壳一体注塑，另一部分边缘区域与模组下壳密封设置。
  7. 根据权利要求5所述的扬声器模组，其特征在于，所述模组中壳包括底壁和相对于底壁延伸的侧壁，所述侧壁包括相对的第一侧壁和第二侧壁，所述多孔陶瓷片为矩形，包括依次连接的第一边、第二边、第三边和第四边，其中，第一边、第二边和第三边与模组中壳一体注塑，第四边与所述模组下壳密封设置。
  8. 根据权利要求4-7任一项所述的扬声器模组，其特征在于，所述密封设置为涂胶密封。
  9. 根据权利要求4-7任一项所述的扬声器模组，其特征在于，所述模组下壳与所述多孔陶瓷片间设有弹垫，所述弹垫受压缩以密封设置所述模组下壳与所述多孔陶瓷片。
  10. 根据权利要求9所述的扬声器模组，其特征在于，所述弹垫固定于 所述模组下壳或所述多孔陶瓷片上。
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CN205847549U (zh) * 2016-07-20 2016-12-28 瑞声科技(新加坡)有限公司 扬声器模组
CN107071668A (zh) * 2017-05-24 2017-08-18 歌尔股份有限公司 扬声器模组及电子设备
CN207625783U (zh) * 2017-08-18 2018-07-17 瑞声科技(新加坡)有限公司 发声器件

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CN205847549U (zh) * 2016-07-20 2016-12-28 瑞声科技(新加坡)有限公司 扬声器模组
CN107071668A (zh) * 2017-05-24 2017-08-18 歌尔股份有限公司 扬声器模组及电子设备
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