WO2020073365A1 - 扬声器模组 - Google Patents

扬声器模组 Download PDF

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Publication number
WO2020073365A1
WO2020073365A1 PCT/CN2018/112258 CN2018112258W WO2020073365A1 WO 2020073365 A1 WO2020073365 A1 WO 2020073365A1 CN 2018112258 W CN2018112258 W CN 2018112258W WO 2020073365 A1 WO2020073365 A1 WO 2020073365A1
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WIPO (PCT)
Prior art keywords
sound hole
fixing groove
side wall
speaker module
module according
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Ceased
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PCT/CN2018/112258
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English (en)
French (fr)
Inventor
张翠丽
李晓龙
杨圣虎
李昌龙
王建新
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Goertek Inc
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Goertek Inc
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Publication of WO2020073365A1 publication Critical patent/WO2020073365A1/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the invention relates to the technical field of electroacoustics. More specifically, it relates to a speaker module.
  • the speaker module usually has a sound hole in the module shell, and the sound emitted by the diaphragm is transmitted to the outside through the sound hole.
  • a sealing ring is pasted around the sound hole, and the material of the sealing ring is mostly silicon rubber.
  • the sealing ring is easy to deflect, which will block a part of the sound hole, resulting in poor consistency of the whole machine, affecting the acoustic effect of the whole machine and poor sealing.
  • the speaker module that over-molds silicone rubber into the sound hole of the module shell to form a seal ring, but this method requires the plastic material of the module shell to be resistant to high temperatures.
  • PEI materials will be selected. PEI materials are much higher than ordinary module housing materials, such as D151 and D251, which will increase the cost of the module housing.
  • the speaker module shells are injection molded parts with complex structure. The second injection mold with double injection will also become complicated in structure, on the one hand, it will increase the overall production cost of the speaker module, on the other hand, the module after the second injection The overall size of the housing is not easy to guarantee.
  • the purpose of the present invention is to provide a speaker module with lower production cost and higher dimensional accuracy of the module housing.
  • a speaker module including: a module case forming an accommodation space, and a speaker unit provided in the accommodation space, the speaker unit separating the accommodation space For the front sound cavity and the rear sound cavity, the module housing is provided with a sound hole communicating with the front sound cavity.
  • the speaker module further includes a ring-shaped separation sound hole, the separation sound hole is disposed around the sound hole, and It is fixedly combined with the module shell, and a sealing ring is fixedly combined on the side of the separation sound hole away from the module shell.
  • the module housing surrounding the sound hole is recessed inward to form an annular fixing groove, and one side of the separating sound hole is fixedly combined in the fixing groove.
  • the separation sound hole is connected to the fixing groove by gluing.
  • the width of the fixing groove is greater than the thickness of the side wall of the separation sound hole.
  • the surface of the side wall of the fixing groove protrudes outward to form a positioning boss.
  • the positioning boss is formed by the outward projection of the side wall surface of the fixing groove near the sound outlet hole.
  • positioning bosses which are evenly distributed on the side wall surface of the fixing groove; or two positioning bosses, which are symmetrically distributed on the side wall surface of the fixing groove.
  • the top surface of the side wall of the fixing groove close to the sound hole protrudes outward to form a vertical boss
  • the separation sound hole is provided with a step corresponding to the vertical boss, and the step overlaps On the vertical boss, the gap between the separation sound hole and the side wall and bottom surface of the fixing groove forms a glue-receiving groove.
  • the vertical boss is continuously arranged around the top surface of the side wall of the fixing groove close to the sound outlet.
  • the material of the module housing is D151 or D251 plastic
  • the material of the separation sound hole is PEI
  • the material of the sealing ring is silicone rubber
  • the separation sound hole and the sealing ring are integrated by double injection form.
  • the separation sound hole is fixedly connected to the sealing ring and the separation sound hole, so that the module shell and the separation sound hole are separately produced and processed in two parts.
  • the two parts can use different materials, thereby reducing the overall cost.
  • the complexity of the module housing mold is reduced, and the dimensional accuracy of the module housing is improved.
  • the secondary injection molding process is used for the separation of the sound hole and the sealing ring with a simple structure, which also reduces the complexity of the second shot mold and reduces the overall cost.
  • FIG. 1 shows a schematic diagram of an exploded structure of the present invention.
  • Figure 2 shows a schematic diagram of the present invention.
  • Fig. 3 shows a cross-sectional view of the A-A plane of the present invention.
  • FIG. 4 shows a partially enlarged view of the present invention.
  • the invention provides a speaker module.
  • the module includes a module housing and a speaker unit.
  • a housing space is formed in the module housing.
  • the speaker unit is accommodated in the housing space and divides the housing space into Front and rear acoustic cavity.
  • the speaker unit is a moving coil unit or a moving iron unit.
  • a moving coil type monomer is used as an example.
  • the moving coil type unit includes a vibration component and a magnetic circuit component.
  • the vibration assembly includes a diaphragm 1 and a voice coil 2, and the diaphragm 1 is connected to the voice coil 2.
  • the magnetic circuit system includes a yoke 3 and a center magnet 4 and a side magnet 5 provided on one side surface of the yoke 3, a magnetic gap is formed between the center magnet 4 and the side magnet 5, and one end of the voice coil 2 is inserted into the magnetic In the gap.
  • the voice coil 2 When the voice coil 2 is energized, the voice coil 2 will vibrate under the action of the magnetic circuit system. At the same time, the voice coil 2 drives the diaphragm 1 to vibrate together to realize the sound of the diaphragm 1.
  • the module shell includes an upper shell 6 and a middle shell 7 that cooperate with each other.
  • the middle shell 7 is provided with a sound hole 8 that communicates with the front sound cavity. The sound emitted by the diaphragm 1 is transmitted to the outside through the sound hole 8. This is common knowledge of those skilled in the art and will not be described in detail here.
  • the speaker module of the present invention further includes a separation sound hole 9, which is arranged in a ring shape, and is fixedly connected around the middle shell 7 around the sound hole 8, and the separation sound hole 9 is far away from the center
  • a sealing ring 10 is fixedly connected to one side of the housing 7, and the sealing ring 10 can improve the sealing performance of the speaker module and the whole machine after assembly.
  • the shell 7 can be injection molded using a relatively inexpensive D151 or D251 plastic material
  • the separation sound hole 9 can be injection molded using a relatively expensive PEI resin material
  • the material of the sealing ring 10 is silicone rubber
  • the second injection is used The method is integrated with the separation sound hole 9.
  • the middle shell 7 and the separation sound hole 9 are separately produced and processed, the two parts can use different materials, thereby reducing the overall cost.
  • the complexity of the middle shell 7 mold is reduced, and the dimensional accuracy of the middle shell is improved.
  • the simple structure of the separation sound hole 9 and the sealing ring 10 is processed by double injection molding, which also reduces the complexity of the second shot mold and reduces the overall cost.
  • the middle shell 7 surrounding the sound hole 8 is recessed inward to form an annular fixing groove 11, and the side separating the sound hole 9 is fixedly connected in the fixing groove 11.
  • the separation sound hole 9 is fixedly connected in the fixing groove 11 by means of glue, thereby improving the positioning accuracy of the separation sound hole 9 and the middle shell 7, and also improving the positioning accuracy of the seal ring 10 and the sound hole 8 , To avoid blocking the sound hole 8 and affect the acoustic effect of the whole machine.
  • the width of the fixing groove 11 is further set to be greater than the thickness of the side wall of the separation sound hole 9 to facilitate separation
  • One side of the sound hole 9 is put into the fixing groove 11.
  • the side wall surface of the fixing groove 11 protrudes outward to form a plurality of positioning bosses 12, which can improve the accuracy of separating the sound holes 9.
  • four positioning bosses 12 are provided on the side walls of the fixing groove 11 close to the sound hole 8 respectively; or two positioning bosses are provided, which are symmetrically distributed on the side wall surface of the fixing groove.
  • the separation sound hole 9 is fixed in the fixing groove 11 by glue, in order to prevent the overflow of glue from affecting the appearance of the product.
  • the top surface of the side wall of the fixing groove 11 close to the sound hole 8 protrudes outward to form a vertical boss 13.
  • the vertical boss 13 is continuously arranged around the top surface of the side wall of the fixing groove 11 near the sound hole, and the separation sound hole 9 is provided with a step 14 corresponding to the vertical boss 13, through which the step 14 is overlapped in the vertical direction
  • the boss 13 has a gap between the bottom surface of the side wall separating the sound hole 9 and the bottom surface of the fixing groove 11.
  • the width of the fixing groove 11 is greater than the thickness of the side wall of the separation sound hole 9, there is also a gap between the two sides and the bottom surface of the side wall of the separation sound hole 9 and the fixing groove 11, and the gap communicates together to form a glue containing groove 15 15 is used to contain excess glue to prevent glue overflow.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

本发明公开一种扬声器模组，包括：形成容纳空间的模组壳体，以及设置在所述容纳空间中的扬声器单体，所述扬声器单体将所述容纳空间分隔为前声腔和后声腔，所述模组壳体开设有与前声腔连通的出声孔，该扬声器模组还包括环形的分离声孔，所述分离声孔环绕所述出声孔设置，并与所述模组壳体固定结合，所述分离声孔远离模组壳体的一侧固定结合有密封圈。本发明使模组外壳与分离声孔为两部分分开独立生产加工，这两部分可以采用不同的材料，从而降低了整体成本。

Description

扬声器模组 技术领域
本发明涉及电声技术领域。更具体地，涉及一种扬声器模组。
背景技术
扬声器模组通常会在模组外壳上开设出声孔，振膜发出的声音通过出声孔向外界传播。为了保证扬声器模组与整机装配后的密封性，一般会在出声孔的四周粘贴密封圈，密封圈的材料大都是硅橡胶。但在密封圈的粘贴过程中，不易对密封圈进行定位，密封圈容易贴偏，会遮挡住一部分出声孔，从而导致整机的一致性较差，影响整机的声学效果且密封不良。因此，目前有一种扬声器模组通过二次成型的方式，将硅橡胶注塑到模组壳体的出声孔上形成密封圈，但此种方法就得需要模组壳体的塑胶材料要耐高温，一般会选择PEI材料，PEI材料相对于普通模组外壳的材料，如D151、D251等要高很多，从而会提高模组外壳的成本。并且扬声器模组外壳都是结构复杂的注塑件，采用二次注塑的二射模具也将会变得结构复杂，一方面会整体提高扬声器模组的制作成本，另一方面二射之后的模组外壳的整体尺寸也不易保证。
发明内容
本发明的目的在于提供一种生产成本较低、模组外壳尺寸精度较高的扬声器模组。
根据本发明的一个方面，提供了一种扬声器模组，包括：形成容纳空间的模组壳体，以及设置在所述容纳空间中的扬声器单体，所述扬声器单体将所述容纳空间分隔为前声腔和后声腔，所述模组壳体开设有与前声腔连通的出声孔，该扬声器模组还包括环形的分离声孔，所述分离声孔环绕所述出声孔设置，并与所述模组壳体固定结合，所述分离声孔远离模组壳体的一侧固定结合有密封圈。
优选地，环绕所述出声孔的模组壳体处向内凹陷形成环形固定槽，所述分离声孔的一侧固定结合于所述固定槽内。
优选地，所述分离声孔通过胶粘与所述固定槽连接。
优选地，所述固定槽的宽度大于所述分离声孔的侧壁厚度。
优选地，所述固定槽侧壁的表面向外凸起形成定位凸台。
优选地，所述定位凸台由固定槽靠近所述出声孔处的侧壁表面向外凸起形成。
优选地，所述定位凸台设置为4个，均匀分布在所述固定槽的侧壁表面；或者定位凸台设置为2个，对称分布在所述固定槽的侧壁表面。
优选地，所述固定槽靠近出声孔的侧壁顶面向外凸起形成竖向凸台，所述分离声孔设有与所述竖向凸台相对应的台阶，所述台阶搭接在所述竖向凸台上，所述分离声孔与所述固定槽的侧壁和底面之间具有的间隙形成容胶槽。
优选地，所述竖向凸台连续环绕设置在所述固定槽靠近出声孔的侧壁顶面。
优选地，所述模组壳体的材料为D151或D251塑胶，所述分离声孔的材料为PEI，所述密封圈的材质为硅橡胶，所述分离声孔与密封圈采用二次注塑一体形成。
本发明的有益效果如下：
本发明通过设置分离声孔，将密封圈与分离声孔固定连接，从而使模组外壳与分离声孔为两部分分开独立生产加工，这两部分可以采用不同的材料，从而降低了整体成本。此外，由于不需要对结构复杂的模组外壳进行二次注塑，降低了模组外壳模具的复杂程度，也就提高了模组外壳的尺寸精度。同时对结构较简单的分离声孔和密封圈采用二次注塑的工艺加工，也降低了二射模具的复杂度，降低整体成本。
附图说明
下面结合附图对本发明的具体实施方式作进一步详细的说明。
图1示出本发明的分解结构示意图。
图2示出本发明的结构示意图。
图3示出本发明A-A面剖视图。
图4示出本发明的局部放大图。
具体实施方式
为了更清楚地说明本发明，下面结合优选实施例和附图对本发明做进一步的说明。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，不应以此限制本发 明的保护范围。
本发明提供了一种扬声器模组，该模组包括模组壳体和扬声器单体，模组壳体中形成有容纳空间，扬声器单体收容于该容纳空间中，并将该容纳空间分隔成前声腔和后声腔。扬声器单体为动圈式单体或者动铁式单体。为了便于说明，在本实施例中以动圈式单体为例。如图1所示，动圈式单体包括振动组件和磁路组件。振动组件包括振膜1和音圈2，振膜1与音圈2连接。所述磁路系统包括磁轭3以及设置于所述磁轭3一侧表面上的中心磁铁4和边磁铁5，中心磁铁4和边磁铁5之间形成磁间隙，音圈2的一端插入磁间隙中。当音圈2通电后，音圈2会在磁路系统的作用下振动，与此同时，音圈2驱动振膜1一同振动，实现振膜1的发声。模组壳体包括相互配合的上壳6和中壳7，中壳7开设有出声孔8，出声孔8与前声腔连通，振膜1发出的声音通过出声孔8向外界传播。这属于本领域技术人员的公知常识，在此不再具体说明。
如图1-3所示，本发明的扬声器模组还包括分离声孔9，分离声孔9设置为环形，环绕固定连接在出声孔8周围的中壳7上，分离声孔9远离中壳7的一侧固定连接有密封圈10，密封圈10能够提高扬声器模组与整机装配后的密封性。本实施方式中壳7可采用价格较低的D151或D251塑胶材料注塑成型，分离声孔9可采用价格较高的PEI树脂材料注塑成型，密封圈10的材料为硅橡胶，采用二次注塑的方式与分离声孔9一体成型。此种结构的扬声器模组由于中壳7与分离声孔9为两部分分开独立生产加工，这两部分可以采用不同的材料，从而降低了整体成本。此外，由于不需要对结构复杂的中壳进行二次注塑，降低了中壳7模具的复杂程度，也就提高了中壳的尺寸精度。同时对结构较简单的分离声孔9和密封圈10采用二次注塑的工艺加工，也降低了二射模具的复杂度，降低了整体成本。
进一步地如图1、图3和图4共同所示，环绕出声孔8的中壳7向内凹陷形成环形的固定槽11，分离声孔9的一侧固定连接在固定槽11内。具体地，分离声孔9通过胶粘的方式固定连接在固定槽11内，从而提高了分离声孔9与中壳7的定位精度，同时也提高了密封圈10与出声孔8的定位精度，避免了对出声孔8的遮挡，影响整机的声学效果。
为提高分离声孔9的定位精度，同时降低装配分离声孔9和中壳7的难度，本实施方式进一步地将固定槽11的宽度设置为大于分离声孔9的侧壁厚度，便于将分离声孔9的一侧放入固定槽11内。同时，固定槽11的侧壁表 面向外凸起形成多个定位凸台12，定位凸台12能够提高分离声孔9的精度。优选地，定位凸台12设置为4个，分别位于固定槽11靠近出声孔8一侧的侧壁上；或者定位凸台设置为2个，对称分布在所述固定槽的侧壁表面。
由于分离声孔9通过胶粘的方式固定在固定槽11内，为了防止溢胶影响产品的美观。如图4所示，固定槽11靠近出声孔8一侧的侧壁顶面向外凸起形成竖向凸台13。具体地，竖向凸台13连续环绕设置在固定槽11靠近出声孔的侧壁顶面，分离声孔9设有与竖向凸台13对应的台阶14，通过台阶14搭接在竖向凸台13上，使分离声孔9侧壁的底面与固定槽11的底面之间具有间隙。由于固定槽11的宽度大于分离声孔9侧壁的厚度，因此分离声孔9侧壁的两侧和底面与固定槽11之间也具有间隙，间隙连通共同形成容胶槽15，容胶槽15用来容纳多余的胶水防止溢胶。
显然，本发明的上述实施例仅仅是为清楚地说明本发明所作的举例，而并非是对本发明的实施方式的限定，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，凡是属于本发明的技术方案所引伸出的显而易见的变化或变动仍处于本发明的保护范围之列。

Claims (10)

  1. 一种扬声器模组，包括形成容纳空间的模组壳体，以及设置在所述容纳空间中的扬声器单体，所述扬声器单体将所述容纳空间分隔为前声腔和后声腔，所述模组壳体开设有与前声腔连通的出声孔，其特征在于，该扬声器模组还包括环形的分离声孔，所述分离声孔环绕所述出声孔设置，并与所述模组壳体固定结合，所述分离声孔远离模组壳体的一侧固定结合有密封圈。
  2. 根据权利要求1所述的扬声器模组，其特征在于，环绕所述出声孔的模组壳体处向内凹陷形成环形固定槽，所述分离声孔的一侧固定结合于所述固定槽内。
  3. 根据权利要求2所述的扬声器模组，其特征在于，所述分离声孔通过胶粘与所述固定槽连接。
  4. 根据权利要求2所述的扬声器模组，其特征在于，所述固定槽的宽度大于所述分离声孔的侧壁厚度。
  5. 根据权利要求4所述的扬声器模组，其特征在于，所述固定槽侧壁的表面向外凸起形成定位凸台。
  6. 根据权利要求5所述的扬声器模组，其特征在于，所述定位凸台由固定槽靠近所述出声孔处的侧壁表面向外凸起形成。
  7. 根据权利要求6所述的扬声器模组，其特征在于，所述定位凸台设置为4个，均匀分布在所述固定槽的侧壁表面；或者定位凸台设置为2个，对称分布在所述固定槽的侧壁表面。
  8. 根据权利要求4所述的扬声器模组，其特征在于，所述固定槽靠近出声孔的侧壁顶面向外凸起形成竖向凸台，所述分离声孔设有与所述竖向凸台相对应的台阶，所述台阶搭接在所述竖向凸台上，所述分离声孔与所述固定槽的侧壁和底面之间具有的间隙形成容胶槽。
  9. 根据权利要求8所述的扬声器模组，其特征在于，所述竖向凸台连续环绕设置在所述固定槽靠近出声孔的侧壁顶面。
  10. 根据权利要求1所述的扬声器模组，其特征在于，所述模组壳体的材料为D151或D251塑胶，所述分离声孔的材料为PEI，所述密封圈的材质为硅橡胶，所述分离声孔与密封圈采用二次注塑一体形成。
PCT/CN2018/112258 2018-10-12 2018-10-27 扬声器模组 Ceased WO2020073365A1 (zh)

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