WO2020107632A1 - 扬声器模组 - Google Patents

扬声器模组 Download PDF

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Publication number
WO2020107632A1
WO2020107632A1 PCT/CN2018/125536 CN2018125536W WO2020107632A1 WO 2020107632 A1 WO2020107632 A1 WO 2020107632A1 CN 2018125536 W CN2018125536 W CN 2018125536W WO 2020107632 A1 WO2020107632 A1 WO 2020107632A1
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WIPO (PCT)
Prior art keywords
sound hole
speaker
speaker module
hole
separation
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PCT/CN2018/125536
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English (en)
French (fr)
Inventor
李昌龙
张翠丽
杨圣虎
李晓龙
王建新
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Goertek Inc
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Goertek Inc
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Publication of WO2020107632A1 publication Critical patent/WO2020107632A1/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
    • 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 some of the sound holes, resulting in poor consistency of the whole machine, affecting the acoustic effect of the whole machine and poor sealing.
  • the silicone rubber is injected into the sound hole of the module shell to form a seal ring by over-molding.
  • this method requires the plastic material of the module shell to be resistant to high temperatures.
  • PEI material is much higher than ordinary module shell materials, such as D151, D251, etc., which will increase the cost of the module shell.
  • the speaker module housings 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 inventor proposes a technical solution to add a ring-shaped separation sound hole in the speaker module, and the sealing ring is integrally formed with the separation sound hole by double injection molding, the separation sound hole is arranged around the sound hole, and through the glue Adhesively fixed with the module shell.
  • the object of the present invention is to provide a speaker module with high reliability, in which it is difficult to separate the sound hole from the module case.
  • a speaker module including a module case forming an accommodation space, and a speaker unit provided in the accommodation space, the speaker unit dividing the accommodation space into For the front sound cavity and the rear sound cavity, the module shell is provided with a sound hole communicating with the front sound cavity, and the outer surface of the module shell near the sound hole is fixedly combined with a fixing part, and the speaker module further includes a ring shape
  • the separation sound hole of the separation sound hole protrudes outward from a side surface of the module housing to form a plug-in portion, and the plug-in portion has a shape corresponding to the inner surface of the sound hole.
  • the insertion part and the sound hole are provided with an interference fit, and the separation sound hole is fixedly coupled to the surface of the fixing part.
  • the cross-sectional shape of the sound hole is rectangular, and the cross-sectional shape of the separating sound hole insertion portion is U-shaped.
  • the U-shaped plug-in portion is provided in an inverted U-shape, and the opening of the U-shape is flush with the bottom surface of the separation sound hole.
  • both side walls of the insertion portion are located inside the edge of the side wall of the separation sound hole.
  • the width of the insertion portion is less than or equal to the width of the sound hole on the module housing.
  • the cross-sectional shape of the sound hole is rectangular, and the cross-sectional shape of the separation sound hole insertion portion is rectangular.
  • the fixing portion is formed by the outer surface of the module case protruding outward.
  • the external shape of the separation sound hole is rectangular, and the fixing portion is provided in a U-shape corresponding to the rectangular external shape of the separation sound hole.
  • the separation sound hole is fixed in the U-shaped fixing part by adhesive fixing.
  • the separation sound hole insertion part of the speaker module of the present invention is set to interference fit with the sound hole of the shell, and at the same time, the separation sound hole is also fixedly combined with the fixed part protruding from the shell, so that when the drop test, the separation sound hole
  • the bending force is borne by the shell, reducing the separation force between the separation sound hole and the fixed part, so that it is not easy to produce a crack between the separation sound hole and the shell, causing the separation sound hole to fall off from the shell, improving the speaker mode Group reliability.
  • FIG. 1 shows a schematic diagram of an exploded structure of the present invention.
  • the present invention provides a speaker module.
  • the module includes a module housing and a speaker unit.
  • a housing space is formed in the module housing, and the speaker unit is contained in the housing space. And divide the accommodating space into a front acoustic cavity and a 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 assembly 1 and a magnetic circuit assembly.
  • the vibration assembly 1 includes a diaphragm and a voice coil, and the diaphragm and the voice coil are fixedly connected.
  • the magnetic circuit system includes a yoke, a center magnet and a side magnet provided on one side surface of the yoke, a magnetic gap is formed between the center magnet and the side magnet, and one end of the voice coil is inserted into the magnetic gap.
  • the voice coil When the voice coil is energized, the voice coil will vibrate under the action of the magnetic circuit system. At the same time, the voice coil drives the diaphragm to vibrate together to achieve the sound of the diaphragm.
  • the module case includes an upper shell 2 and a middle shell 3 which cooperate with each other.
  • a sound hole 31 is provided on the side wall of the middle shell 3, and the sound hole 31 communicates with the front sound cavity, and the sound emitted by the diaphragm passes through the sound hole 31 Outside spread.
  • the speaker module of the present invention further includes a separation sound hole 4, the separation sound hole 4 is arranged in a ring shape, and a surface close to the middle case 3 protrudes outward to form an insertion portion 41, the shape of the insertion portion 41 and the sound outlet
  • the inner surface of 31 is matched and corresponding, and the insertion portion 41 and the sound hole 31 are provided in an interference fit.
  • the side wall of the separation sound hole 4 is provided with an opening communicating with the sound hole 31.
  • the space enclosed by the sound hole 31 and the side wall of the separation sound hole 4 together forms a sound output channel through which the sound emitted by the diaphragm 1 passes The sound channel spreads to the outside world.
  • a fixing portion 32 is fixedly coupled to the outer surface of the middle case 3 near the sound hole 31. After the insertion portion 41 of the separation sound hole 4 is inserted into the sound hole 31, the separation sound hole 4 is fixedly coupled to the surface of the fixing portion 32.
  • the insertion portion 41 may be located at the side of the separation sound hole 4 so that the separation sound hole 4 is inserted laterally into the middle case 3, or the insertion portion 41 may be located at the end surface of the separation sound hole 4 so that the separation sound hole 4 is inserted longitudinally into the middle case 3. In this embodiment shown in FIG. 1, the insertion portion 41 is located on the side of the separation sound hole.
  • the separation sound hole 4 is subjected to The bending force is borne by the middle shell 3, which enhances the bonding strength of the separation sound hole 4 and the middle shell 3, and reduces the occurrence of the separation sound hole 4 falling off from the fixing portion 32 or the occurrence of cracks between the separation sound hole 4 and the middle shell 3. , Thereby improving the reliability of the speaker module of the present invention.
  • the plug portion 41 needs to have a shape corresponding to the sound hole 31, and the outer surface of the plug portion 41 needs to closely fit the inner surface of the sound hole 31 to achieve an interference fit between the two.
  • the cross-sectional shape of the sound hole 31 is rectangular, and the cross-sectional shape of the insertion portion 41 is U-shaped. The outer surface of the U-shaped insertion portion is in contact with the inner surfaces of the three sides of the sound hole 31.
  • the cross-sectional shape of the sound output hole 31 is rectangular, and the cross-sectional shape of the insertion portion 41 is rectangular.
  • the U-shaped plug-in portion 41 of the present embodiment is provided as an inverted U-shape, the opening of the U-shaped plug-in portion 41 is flush with the bottom surface of the separation sound hole 4, and both side walls of the plug-in portion 41 are located in the separation sound hole 4 The inside of the edge.
  • the thickness of the side wall of the insertion portion 41 is subject to the strength that can ensure the interference fit of the insertion portion and the sound hole 31. If the thickness is too large, the cross-sectional area of the sound hole 31 will be affected, and the cross-sectional area of the sound output channel will be reduced. Reduce the acoustic effect of the speaker module.
  • the width of the plug-in part 41 that is, the depth inserted into the sound-out hole 31 is less than or equal to the thickness of the side wall of the middle case 3, to avoid insertion
  • the portion 41 protrudes into the middle shell to interfere with other components.
  • the fixing portion 32 of the present embodiment is formed by protrusions on the outer surface of the middle shell 3, the fixing portion 32 is located below the sound hole 31, and the separating sound hole 4 is inserted into the middle shell 3 laterally Then, the separation sound hole 4 is adhered to the surface of the fixing portion 32.
  • the shape of the fixing portion 32 corresponds to the outer shape of the separation sound hole 4.
  • the outer shape of the separation sound hole 4 is set to a rectangle, and the fixing portion 32 is set to a U shape corresponding to the outer shape of the rectangular separation sound hole 4 to separate sound.
  • the hole 4 is fixedly connected in the U-shaped fixing portion 32 by glue.
  • the fixing portion 32 is provided in a flat shape, and the bottom surface of the separation sound hole 4 is adhered to the surface of the flat fixing portion 32.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth 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，以及设置在容纳空间中的扬声器单体，扬声器单体将容纳空间分隔为前声腔和后声腔，模组壳体开设有与前声腔连通的出声孔，靠近出声孔处的模组壳体外侧表面固定结合有固定部，该扬声器模组还包括环形的分离声孔，分离声孔靠近模组壳体的一侧表面向外凸起形成插接部，插接部具有与出声孔的内侧表面匹配对应的外形，插接部与出声孔设置为过盈配合，且分离声孔固定结合于固定部的表面。此种结构使得跌落测试时，分离声孔产生的弯折力由壳体承担，减少分离声孔与固定部之间产生分离力，从而不易在分离声孔与壳体之间产生裂缝，造成分离声孔从壳体上脱落，提高了本产品的可靠性。

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。
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。因此，发明人提出一种技术方案，在扬声器模组中增加一个环形的分离声孔，密封圈通过二次注塑的方式与分离声孔一体形成，分离声孔环绕出声孔设置，并通过胶水与模组壳体粘接固定。
但是此种结构的扬声器模组在跌落可靠性测试时，分离声孔与模组外壳的结合强度不足以克服跌落冲击时的弯矩，分离声孔会从模组外壳上脱落，从而使可靠性测试失败。
发明内容
本发明的目的在于提供一种分离声孔难以从模组壳体上脱落、可靠性高的扬声器模组。
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，靠近所述出声孔处的模组壳体外侧表面固定结合有固定部，该扬声器模组还 包括环形的分离声孔，所述分离声孔靠近模组壳体的一侧表面向外凸起形成插接部，所述插接部具有与所述出声孔的内侧表面匹配对应的外形，所述插接部与出声孔设置为过盈配合，且所述分离声孔固定结合于所述固定部的表面。
优选地，所述出声孔的截面形状为矩形，所述分离声孔插接部的截面形状为U型。
优选地，所述U型插接部为倒U型设置，且U型的开口与所述分离声孔的底面齐平。
优选地，所述插接部的两侧壁均位于所述分离声孔侧壁边缘的内侧。
优选地，所述插接部的宽度小于或等于所述模组壳体上出声孔的宽度。
优选地，所述出声孔的截面形状为矩形，所述分离声孔插接部的截面形状为矩形。
优选地，所述固定部由所述模组壳体的外侧表面向外凸起形成。
优选地，所述分离声孔的外形为矩形，所述固定部设置为与所述分离声孔的矩形外形匹配对应的U型。
优选地，所述分离声孔通过胶粘固定结合于所述U型固定部内。
本发明的有益效果如下：
本发明扬声器模组的分离声孔插接部设置为与壳体出声孔过盈配合，同时分离声孔还与壳体上突出的固定部固定结合，使得跌落测试时，分离声孔产生的弯折力由壳体承担，减少分离声孔与固定部之间产生分离力，从而不易在分离声孔与壳体之间产生裂缝，造成分离声孔从壳体上脱落，提高了本扬声器模组的可靠性。
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。
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。
如图1所示，本实用新型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。动圈式单体包括振动组件1和磁路组件。振动组件1包括振膜和音圈，振膜与音圈固定连接。所述磁路系统包括磁轭以及设置于所述磁轭一侧表面上的中心磁铁和边磁铁，中心磁铁和边磁铁之间形成磁间隙，音圈的一端插入磁间隙中。当音圈通电后，音圈会在磁路系统的作用下振动，与此同时，音圈驱动振膜一同振动，实现振膜的发声。模组壳体包括相互配合的上壳2和中壳3，中壳3的侧壁上开设有出声孔31，出声孔31与前声腔连通，振膜发出的声音通过出声孔31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。
本发明的扬声器模组还包括分离声孔4，分离声孔4设置为环形，其靠近中壳3一侧的表面向外凸起形成插接部41，插接部41的形状与出声孔31的内侧表面匹配对应，插接部41与出声孔31设置为过盈配合。分离声孔4的侧壁设有与出声孔31连通的开口，出声孔31以及分离声孔4的侧壁围合形成的空间共同形成出音通道，振膜1发出的声音通过该出音通道向外界传播。
中壳3靠近出声孔31的外侧表面固定结合有固定部32，分离声孔4的插接部41插入出声孔31后，分离声孔4固定结合于固定部32表面。插接部41可以位于分离声孔4的侧面使分离声孔4横向插入中壳3中，插接部41也可以位于分离声孔4的端面使分离声孔4纵向插入中壳3中。如图1所示的本实施方式中，插接部41位于分离声孔的侧面，当进行跌落可靠性测试时，由于插接部41与出声孔31紧密配合，使得分离声孔4受到的弯折力由中壳3承担，增强了分离声孔4与中壳3的结合强度，减少分离声孔4从固定部32上脱落或者分离声孔4与中壳3之间产生裂缝的情况发生，从而提高了本发明扬声器模组的可靠性。
进一步地，插接部41需要具有与出声孔31对应的形状，插接部41的外侧表面需要与出声孔31的内侧表面紧密贴合，实现二者的过盈配合。本实施方式中出声孔31的截面形状为矩形，插接部41的截面形状为U型，U型的插接部外表面与出声孔31的三侧内侧表面贴合。在另一实施方式中，出声孔31的截面形状为矩形，插接部41的截面形状为矩形。优选地，本实施方式的U型插接部41设置为倒U型，U型插接部41的开口与分离声孔4的底面齐平，插接部41的两侧壁位于分离声孔4边缘的内侧。插接部41的侧壁厚度以能保证插接部与出声孔31过盈配合的强度为准，如厚度过大将影响出声孔 31的截面面积，减小出音通道的截面面积，进而降低扬声器模组的声学效果。由于本实施方式中的插接部41全部插入出声孔31内，因此插接部41的宽度，也就是插入出声孔31内的深度小于或等于中壳3的侧壁厚度，避免插接部41伸入中壳内部与其它部件产生干涉。
进一步地，如图1所示的本实施方式的固定部32由中壳3的外侧表面凸起形成，固定部32位于出声孔31的下方，分离声孔4横向与中壳3插接后，再将分离声孔4粘接于固定部32的表面。固定部32的形状与分离声孔4的外形相对应，本实施方式中分离声孔4的外形设置为矩形，固定部32设置为与矩形分离声孔4的外形对应的U型，从而分离声孔4通过胶粘固定连接在U型固定部32内。在另一实施方式中，固定部32设置为平板状，分离声孔4的底面粘接在平板状固定部32的表面。
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 (9)

  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，靠近所述出声孔处的模组壳体外侧表面固定结合有固定部，该扬声器模组还包括环形的分离声孔，所述分离声孔靠近模组壳体的一侧表面向外凸起形成插接部，所述插接部具有与所述出声孔的内侧表面匹配对应的外形，所述插接部与出声孔设置为过盈配合，且所述分离声孔固定结合于所述固定部的表面。
  2. 根据权利要求1所述的扬声器模组，其特征在于，所述出声孔的截面形状为矩形，所述分离声孔插接部的截面形状为U型。
  3. 根据权利要求2所述的扬声器模组，其特征在于，所述U型插接部为倒U型设置，且U型的开口与所述分离声孔的底面齐平。
  4. 根据权利要求3所述的扬声器模组，其特征在于，所述插接部的两侧壁均位于所述分离声孔侧壁边缘的内侧。
  5. 根据权利要求3所述的扬声器模组，其特征在于，所述插接部的宽度小于或等于所述模组壳体上出声孔的宽度。
  6. 根据权利要求1所述的扬声器模组，其特征在于，所述出声孔的截面形状为矩形，所述分离声孔插接部的截面形状为矩形。
  7. 根据权利要求1所述的扬声器模组，其特征在于，所述固定部由所述模组壳体的外侧表面向外凸起形成。
  8. 根据权利要求7所述的扬声器模组，其特征在于，所述分离声孔的外形为矩形，所述固定部设置为与所述分离声孔的矩形外形匹配对应的U型。
  9. 根据权利要求8所述的扬声器模组，其特征在于，所述分离声孔通过胶粘固定结合于所述U型固定部内。
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