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WO2020073535A1 - 扬声器模组 - Google Patents

扬声器模组 Download PDF

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Publication number
WO2020073535A1
WO2020073535A1 PCT/CN2018/125577 CN2018125577W WO2020073535A1 WO 2020073535 A1 WO2020073535 A1 WO 2020073535A1 CN 2018125577 W CN2018125577 W CN 2018125577W WO 2020073535 A1 WO2020073535 A1 WO 2020073535A1
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WO
WIPO (PCT)
Prior art keywords
sound hole
separation sound
connecting piece
separation
fixing groove
Prior art date
Application number
PCT/CN2018/125577
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English (en)
French (fr)
Inventor
李晓龙
杨圣虎
张翠丽
李昌龙
王建新
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
Publication of WO2020073535A1 publication Critical patent/WO2020073535A1/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
    • 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; DEAF-AID SETS; 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; DEAF-AID SETS; 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, so that 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 silicone rubber is injected into the sound hole of the module shell to form a seal ring by over-molding, but this method requires the plastic material of the module shell to be resistant to high temperatures.
  • PEI material is much higher than ordinary module housing materials, such as D151, D251, etc., 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 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 means of double injection, 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 a high reliability and a separation sound hole that is difficult to fall off from 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
  • 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 provided with one end connected to the other end and Separating the first connecting piece outside the sound hole
  • the module housing is provided with a second connecting piece that can be welded to the first connecting piece
  • the separating sound hole is arranged around the sound hole
  • the module casing is fixedly combined, and a seal ring is fixedly coupled to the side of the separation sound hole away from the module casing.
  • an upper surface of one end of the second connection piece is located outside the module housing, and the first connection piece and the second connection piece are lap welded.
  • the first connecting piece is integrally formed with the separation sound hole by injection molding
  • the second connecting piece is integrally formed with the module housing by injection molding
  • the first connecting piece is provided with one or more gripping holes that can improve the connection strength between the first connecting piece and the separation sound hole.
  • both the first connection piece and the second connection piece are metal connection pieces.
  • the module casing surrounding the sound hole is recessed inward to form an annular fixing groove, and one end of the separation 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 separation sound hole is provided with a step corresponding to the top surface of the side wall of the fixing groove, the step overlaps the top surface of the side wall of the fixing groove, and the two sides of the side wall of the separation sound hole.
  • the gaps between the side and bottom surfaces and the fixing groove form a glue-receiving groove.
  • 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 connection strength between the separation sound hole and the module housing is improved, thereby improving the reliability of the product.
  • 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 fixed on the middle shell 7 around the sound outlet hole 8 by glue, and the separation sound hole 9
  • a sealing ring 16 is fixedly connected to the side away from the middle case 7, and the sealing ring 16 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 16 is processed by double injection molding, which also reduces the complexity of the second shot mold and reduces the overall cost.
  • the separation sound hole 9 of the present invention is provided with a first connection piece 10, and the middle shell 7 is provided with a second connection piece 11, through The one end of the first connecting piece 10 and the one end of the second connecting piece 11 are lap welded, thereby improving the connection strength of the separation sound hole 9 and the middle case 7.
  • the first connection piece 10 and the second connection piece 11 are made of metal.
  • One end of the first connection piece 10 is fixedly connected to the separation sound hole 9 and the other end is located outside the separation sound hole 9.
  • the first connection piece 10 may be It is integrally formed with the separation sound hole 9 by injection molding. Further, the first connecting piece 10 has one or more gripping holes 12.
  • the opening of the first connecting piece 10 with the gripping holes 12 can increase the connection strength between the first connecting piece 10 and the separation sound hole 9 and improve the reliability of the product.
  • the second connecting piece 11 and the middle case 7 are integrally formed by injection molding, the middle case 7 is provided with a missing portion, so that one end surface of the second connecting piece 11 is exposed to the outside of the middle case 7, and the first connecting piece 10 overlaps the second On the surface of the connecting piece 11, the two can be connected by laser welding.
  • the middle shell 7 surrounding the sound hole 8 is recessed inward to form an annular fixing groove 13, and the side separating the sound hole 9 is fixedly connected in the fixing groove 13.
  • the separation sound hole 9 is fixedly connected in the fixing groove 13 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.
  • this embodiment further sets the width of the fixing groove 13 to be greater than the thickness of the side wall of the separation sound hole 9, so that it is convenient to put one side of the separation sound hole 9 into the fixing groove Within 13. Since the separation sound hole 9 is fixed in the fixing groove 13 by means of glue, in order to prevent the overflow of glue from affecting the appearance of the product. As shown in FIG. 4, the separation sound hole 9 is provided with a step 14 corresponding to the top surface of the side wall of the fixing groove 13, and the step 14 overlaps the top surface of the side wall of the fixing groove 13 to make the side wall of the separation sound hole 9 There is a gap between the bottom surface of and the bottom surface of the fixing groove 13.
  • the width of the fixing groove 13 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 13, 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)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (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，所述分离声孔设有一端与其连接、另一端位于分离声孔外侧的第一连接片，所述模组壳体设有可与所述第一连接片焊接连接的第二连接片，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。本发明通过对第一连接片和第二连接片的固定连接，提高了分离声孔与模组壳体之间的连接强度，从而提高产品的可靠性。

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，使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，发明人发现此种扬声器模组通过胶粘的方式固定连接分离声孔与模组壳体，粘接强度较小，在产品跌落过程中，会有分离声孔脱离模组壳体的风险，影响产品的可靠性。
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，该扬声器模组还包括环形的分离声孔，所述分离声孔设有一端与其连接、 另一端位于分离声孔外侧的第一连接片，所述模组壳体设有可与所述第一连接片焊接连接的第二连接片，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，所述第二连接片的一端上表面位于所述模组壳体的外侧，所述第一连接片与第二连接片搭接焊接。
优选地，所述第一连接片通过注塑方式与所述分离声孔一体成型，所述第二连接片通过注塑方式与所述模组壳体一体成型。
优选地，所述第一连接片开设有一个或多个能够提高第一连接片与分离声孔连接强度的抓胶孔。
优选地，所述第一连接片与第二连接片均为金属连接片。
优选地，环绕所述出声孔的模组壳体向内凹陷形成环形固定槽，所述分离声孔的一端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，所述分离声孔设有与所述固定槽侧壁的顶面相对应的台阶，所述台阶搭接在所述固定槽侧壁的顶面上，所述分离声孔侧壁的两侧和底面与所述固定槽之间具有的间隙形成容胶槽。
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。通过对第一连接片和第二连接片的固定连接，提高了分离声孔与模组壳体之间的连接强度，从而提高产品的可靠性。
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。
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，通过胶粘环绕固定在出声孔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16，密封圈16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16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。
为了提高分离声孔9与中壳7的连接强度，如图2-4所示，本发明的分离声孔9上设有第一连接片10，中壳7设有第二连接片11，通过将第一连接 片10的一端与第二连接片11的一端进行搭接焊接，从而提高分离声孔9与中壳7的连接强度。具体的，第一连接片10和第二连接片11均为金属材质，第一连接片10的一端与分离声孔9固定连接，另一端位于分离声孔9的外侧，第一连接片10可以通过注塑的方式与分离声孔9一体成型。进一步地，第一连接片10开设一个或多个抓胶孔12，由于分离声孔7的体积较小，第一连接片10与分离声孔9注塑的重叠部分也较小，连接强度较低。通过在第一连接片10上开设抓胶孔12能够增加第一连接片10与分离声孔9的连接强度，提高产品的可靠性。第二连接片11与中壳7通过注塑方式一体成型，中壳7设置有缺失部，使第二连接片11的一端表面暴露于中壳7的外侧，第一连接片10搭接于第二连接片11的表面上，从而能够对二者进行激光焊接连接。
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13，分离声孔9的一侧固定连接在固定槽13内。具体地，分离声孔9通过胶粘的方式固定连接在固定槽13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。
为了降低装配分离声孔9和中壳7的难度，本实施方式进一步地将固定槽13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13内。由于分离声孔9通过胶粘的方式固定在固定槽13内，为了防止溢胶影响产品的美观。如图4所示，分离声孔9设有与固定槽13侧壁的顶面对应的台阶14，通过台阶14搭接在固定槽13侧壁的顶面上，使分离声孔9侧壁的底面与固定槽13的底面之间具有间隙。由于固定槽13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13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，所述分离声孔设有一端与其连接、另一端位于分离声孔外侧的第一连接片，所述模组壳体设有可与所述第一连接片焊接连接的第二连接片，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，所述第二连接片的一端上表面位于所述模组壳体的外侧，所述第一连接片与第二连接片搭接焊接。
  3. 根据权利要求1所述的扬声器模组，其特征在于，所述第一连接片通过注塑方式与所述分离声孔一体成型，所述第二连接片通过注塑方式与所述模组壳体一体成型。
  4. 根据权利要求3所述的扬声器模组，其特征在于，所述第一连接片开设有一个或多个能够提高第一连接片与分离声孔连接强度的抓胶孔。
  5. 根据权利要求1所述的扬声器模组，其特征在于，所述第一连接片与第二连接片均为金属连接片。
  6. 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向内凹陷形成环形固定槽，所述分离声孔的一端固定结合于所述固定槽内。
  7. 根据权利要求6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。
  8. 根据权利要求6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。
  9. 根据权利要求8所述的扬声器模组，其特征在于，所述分离声孔设有与所述固定槽侧壁的顶面相对应的台阶，所述台阶搭接在所述固定槽侧壁的顶面上，所述分离声孔侧壁的两侧和底面与所述固定槽之间具有的间隙形成容胶槽。
  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。
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