WO2022126784A1 - 扬声器箱 - Google Patents

扬声器箱 Download PDF

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Publication number
WO2022126784A1
WO2022126784A1 PCT/CN2020/141849 CN2020141849W WO2022126784A1 WO 2022126784 A1 WO2022126784 A1 WO 2022126784A1 CN 2020141849 W CN2020141849 W CN 2020141849W WO 2022126784 A1 WO2022126784 A1 WO 2022126784A1
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WO
WIPO (PCT)
Prior art keywords
sound
generating unit
air
plastic
bottom wall
Prior art date
Application number
PCT/CN2020/141849
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English (en)
French (fr)
Inventor
任璋
钟志威
王常亮
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声光电科技(常州)有限公司
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Application filed by 瑞声声学科技(深圳)有限公司, 瑞声光电科技(常州)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022126784A1 publication Critical patent/WO2022126784A1/zh

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Classifications

    • 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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • 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

Definitions

  • the present invention relates to the field of sound and electricity, in particular to a speaker box used in portable electronic products.
  • the speaker box includes a shell and a sound-generating unit accommodated in the shell.
  • the sound-generating unit is provided with a pad for electrical connection with an external circuit, and the speaker box also includes a metal air-permeable spacer covering the sound-generating unit.
  • the close distance between the metal air-permeable spacer and the pad area, the fluctuation of assembly tolerance or the slight deformation of the mechanical reliability metal mesh may lead to the risk of short circuit.
  • the purpose of the present invention is to provide a loudspeaker box to solve the above short-circuit risk problem.
  • the present invention provides a loudspeaker box, comprising a casing with a receiving space and a sound-generating unit accommodated in the receiving space, wherein the sound-generating unit includes a vibrating membrane, and the vibrating membrane accommodates the housing
  • the space is divided into a front cavity and a rear cavity, the sound-generating unit is further provided with a pad for electrical connection with an external circuit, and the speaker box further includes a ventilating spacer covered on the sound-generating unit, the ventilating isolation
  • the air-permeable insulator is located in the rear cavity, and the air-permeable insulator includes a air-permeable insulator body and an insulating layer wrapped on the air-permeable insulator body.
  • the gas permeable spacer body is a metal mesh
  • the insulating layer is formed of an insulating material soaked, sprayed or deposited on the metal mesh.
  • the breathable spacer body is made of a mesh structure made of a metal material, the outer surface of the metal material is covered with an insulating layer, and the insulating layer is formed of an insulating material soaked, sprayed or deposited on the metal material .
  • the air-permeable spacer includes a bottom wall attached to the sound-generating unit, an extension portion formed by bending and extending a peripheral edge of the bottom wall toward the vibrating membrane, and an extension portion extending away from the sound-generating unit.
  • the fixed part is bent and extended in the direction of the body; the fixed part is fixedly connected with the casing.
  • the housing includes a front cover and a rear cover assembled with the front cover to form a receiving space
  • the front cover includes a plastic part and a reinforcing part injection-molded and fixed to the plastic part
  • the plastic part includes a retaining wall, a A bottom wall connected to one end of the retaining wall, a sound outlet protruding from one side of the retaining wall, and an installation groove enclosed by the retaining wall and the bottom wall
  • the sound-emitting unit is fixed to the the installation groove
  • the fixing part is fixedly connected with the retaining wall.
  • the reinforcing member includes a body and a plurality of surrounding walls extending from the body into the plastic part, the surrounding walls enclose a through hole, and the through hole is filled with the plastic of the plastic part .
  • the speaker box of the present invention avoids the risk of short circuit between the air-permeable spacer and the pad by covering the air-permeable spacer with an insulating layer.
  • FIG. 1 is an exploded view of a preferred embodiment of a partial structure of a speaker box of the present invention.
  • FIG. 2 is a perspective view of a preferred embodiment of a partial structure of the speaker box of the present invention.
  • FIG. 3 is a schematic three-dimensional structural diagram of a ventilating spacer in the speaker box shown in FIG. 1 .
  • FIG. 4 is a cross-sectional view of the air-permeable spacer shown in FIG. 3 along the line A-A.
  • FIG. 5 is a perspective view of the speaker enclosure shown in FIG. 2 from another perspective.
  • the speaker box includes a housing with a housing space, a sound-generating unit 3 having a diaphragm 31 , the sound-generating unit 3 is accommodated in the housing 1 , and the vibrating membrane 31
  • the accommodating space is divided into a front cavity and a rear cavity.
  • the case includes a front cover 11 and a rear cover (not shown).
  • the front cover 11 includes a plastic part 111 and a reinforcing part 113 fixed to the plastic part 111 by injection molding.
  • the plastic part 111 includes a blocking wall 1111 , a bottom wall 1112 connected to one end of the blocking wall 1111 , a sound outlet 1113 protruding from one side of the blocking wall
  • An installation groove 1114 formed by the bottom wall 1112 and a concave portion 1115 provided on the retaining wall 1111 and communicated with the installation groove 1114 are formed.
  • the sound-emitting part 1113 communicates with the front cavity, so as to transmit the sound.
  • the reinforcing member 113 includes a main body 114 and a plurality of surrounding walls 115 extending from the main body 114 into the plastic member 111 . Plastic filling of plastic part 111 .
  • the reinforcing member 113 is made of metal material.
  • the reinforcing member 113 made of metal material not only helps to strengthen the strength of the front cover 11, but also helps the speaker box to dissipate heat.
  • the reinforcing member 113 is made of steel material.
  • the surrounding wall 115 is stamped and formed by the body 114 .
  • composition of the front cover 11 is not limited to this, for example, the front cover 11 can also be configured to be made of plastic only.
  • the sound-generating unit 3 is provided with a pad 33 for electrical connection with an external circuit, and the pad 33 extends from the sound-generating unit 3 from the recessed portion 1115 in a direction parallel to the bottom wall 1112 to the A side of the boss 5 away from the bottom wall 1112 .
  • the pad 33 is the pad of the flexible circuit board in the sounding unit 3, and the flexible circuit board is used to electrically connect the external circuit and the voice coil of the sounding unit 3, so that the voice coil can be energized after being energized.
  • the vibrating membrane 31 is driven to vibrate and sound, and the bottom wall 1112 is arranged opposite the vibrating membrane 31 and surrounds the vibrating membrane 31 to form the front cavity.
  • the said voice port 1113 is transmitted to the outside world.
  • the speaker box further includes a soldering piece 7, and the soldering piece 7 includes a main body portion 71 which is injection-molded and fixed to the bottom wall 1112, extends from the main body portion 71 to the outside of the receiving space, and is injection-molded and fixed to the bottom wall.
  • the first electrical connection portion 73 of 1112, the second electrical connection portion 75 formed by bending and extending from the main body portion 71 and injection molded into the boss 5, wherein the first electrical connection portion 71 is electrically connected to the external circuit.
  • the second electrical connection portion 75 is exposed on the side of the boss 5 away from the bottom wall 1112 , and the pad 33 is provided on the second electrical connection portion 75 and is electrically connected to the second electrical connection portion 75 Section 75 is electrically connected.
  • the loudspeaker box further includes a ventilating spacer 8 which is covered and arranged on the sounding unit 3 .
  • the breathable spacer 8 is located in the rear cavity, and includes a breathable spacer body 81 and an insulating layer 82 wrapped on the breathable spacer body 81 .
  • the gas permeable separator body 81 is a metal mesh
  • the insulating layer 82 is a deposition layer formed by soaking, depositing or spraying an insulating material on the metal mesh.
  • the raw material of the metal mesh can also be soaked, deposited or sprayed with insulating material to form the insulating layer 82 and then formed into the metal mesh.
  • the air-permeable isolator body 81 includes a bottom wall 811 attached to the sounding unit 3 , an extension portion 812 formed by bending and extending the periphery of the bottom wall 811 toward the diaphragm 31 , and an extension portion 812 extending away from the diaphragm 31 .
  • the fixing part 813 is bent and extended in the direction of the sounding unit 3; the fixing part 813 and the retaining wall 1111 are sealed and fixed by sealing glue.

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

Abstract

本发明提供了一种扬声器箱，包括具有收容空间的壳体以及收容于所述收容空间的发声单体，所述发声单体包括振膜，所述振膜将所述收容空间分隔为前腔和后腔，所述发声单体还设有用于与外部电路电连接的焊盘，所述扬声器箱还包括盖设于所述发声单体的透气隔离件，所述透气隔离件位于所述后腔，所述透气隔离件包括透气隔离件本体以及包覆在所述透气隔离件本体上的绝缘层。

Description

扬声器箱 技术领域
本发明涉及声电领域，尤其涉及一种运用于便携式电子产品的扬声器箱。
 背景技术
随着移动互联网时代的到来，智能移动设备的数量不断上升。而在众多移动设备之中，手机无疑是最常见、最便携的移动终端设备。目前，手机的功能极其多样，其中之一便是高品质的音乐功能，因此，用于播放声音的扬声器箱被大量应用到现在的智能移动设备之中。
扬声器箱包括壳体及收容于壳体内的发声单体，发声单体设有用于与外部电路电性连接的焊盘，扬声器箱还包括罩设在发声单体上的金属透气隔离件。相关技术中，金属透气隔离件与焊盘区域距离近，装配公差波动或机械可靠性金属网轻微变形，都可能导致短路风险。
因此，实有必要提供一种新的扬声器箱解决上述技术问题。
 技术问题
本发明的目的在于提供一种扬声器箱解决上述短路风险的问题。
 技术解决方案
为了达到上述目的，本发明提供了一种扬声器箱，包括具有收容空间的壳体以及收容于所述收容空间的发声单体，所述发声单体包括振膜，所述振膜将所述收容空间分隔为前腔和后腔，所述发声单体还设有用于与外部电路电连接的焊盘，所述扬声器箱还包括盖设于所述发声单体的透气隔离件，所述透气隔离件位于所述后腔，所述透气隔离件包括透气隔离件本体以及包覆在所述透气隔离件本体上的绝缘层。
优选地，所述透气隔离件本体为金属网，所述绝缘层由浸泡、喷涂或沉积在所述金属网上的绝缘材料形成。
优选地，所述透气隔离件本体由金属材料制成的网状结构，所述金属材料的外表面包覆绝缘层，所述绝缘层由浸泡、喷涂或沉积在所述金属材料的绝缘材料形成。
优选地，所述透气隔离件包括贴设于所述发声单体的底壁以及由底壁的周缘朝向所述振膜的方向弯折延伸形成的延伸部以及由延伸部向远离所述发声单体的方向弯折延伸的固定部；所述固定部与所述壳体固定连接。
优选地，所述壳体包括前盖以及与前盖组配形成收容空间的后盖，前盖包括塑料件及注塑固定于所述塑料件的加强件；所述塑料件包括挡墙、与所述挡墙的一端连接的底壁、自所述挡墙一侧凸伸出的出声部、由所述挡墙和所述底壁围合形成的安装槽；所述发声单体固定于所述安装槽，所述固定部与所述挡墙固定连接。
优选地，所述加强件包括本体及自所述本体向所述塑料件内延伸形成的多个围壁，所述围壁围合形成通孔，所述通孔被所述塑料件的塑料填充。
 有益效果
与相关技术相比，本发明的扬声器箱通过在透气隔离件上包覆绝缘层，从而避免透气隔离件与焊盘之间的短路风险。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本发明扬声器箱的部分结构一较佳实施例的分解图。
图2为本发明扬声器箱的部分结构一较佳实施例的立体图。
图3为图1所示扬声器箱中透气隔离件的立体结构示意图。
图4为图3所示的透气隔离件沿A-A线的剖视图。
图5为图2所示的扬声器箱的另一视角的立体图。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
请结合参阅图1至图5，扬声器箱包括具有收容空间的壳体、具有振膜31的发声单体3，所述发声单体3收容于所述壳体1内，且所述振膜31将所述收容空间分隔为前腔和后腔。
壳体包括前盖11和后盖（未示出）。前盖11包括塑料件111及注塑固定于所述塑料件111的加强件113。所述塑料件111包括挡墙1111、与所述挡墙1111的一端连接的底壁1112、自所述挡墙1111一侧凸伸出的出声部1113、由所述挡墙1111和所述底壁1112围合形成的安装槽1114以及设于所述挡墙1111上并与所述安装槽1114连通的凹陷部1115。出声部1113与前腔连通，从而将声音传出。
所述加强件113包括本体114及自所述本体114向所述塑料件111内延伸形成的多个围壁115，所述围壁115围合形成通孔116，所述通孔116被所述塑料件111的塑料填充。
在本实施例中，所述加强件113由金属材料制成。金属材料制成的所述加强件113不仅有利于加强所述前盖11的强度，而且有利于扬声器箱散热。通常情况下，所述加强件113由钢材料制成。
在本实施例中，所述围壁115由所述本体114冲压成型。
可以理解的是，在其他实施例中，所述前盖11的组成并不局限于此，例如，所述前盖11还可以设置成仅由塑料制成。
所述发声单体3设有用于与外部电路电连接的焊盘33，所述焊盘33自所述发声单体3沿平行于所述底壁1112的方向自凹陷部1115伸出至所述凸台5远离所述底壁1112的一侧。
其中，所述焊盘33为所述发声单体3中柔性电路板的焊盘，该柔性电路板用于电连接外部电路和所述发声单体3的音圈，以使得音圈通电后能驱动所述振膜31振动发声，底壁1112与振膜31相对设置并与所述振膜31围合形成所述前腔，所述振膜31振动发出的声音依次经所述前腔和所述出声口1113传播至外界。
所述扬声器箱还包括焊片7，所述焊片7包括注塑固定于所述底壁1112的主体部71、自所述主体部71延伸至所述收容空间外并注塑固定于所述底壁1112的第一电连接部73、自所述主体部71弯折延伸形成并注塑于所述凸台5内的第二电连接部75，其中，所述第一电连接部71与外部电路电连接，所述第二电连接部75在所述凸台5远离所述底壁1112一侧外露，所述焊盘33设于所述第二电连接部75上并与所述第二电连接部75电连接。
扬声器箱还包括罩设在所述发声单体3上的透气隔离件8。透气隔离件8位于后腔，包括透气隔离件本体81和包覆在透气隔离件本体81上的绝缘层82。透气隔离件本体81为金属网，绝缘层82是通过在金属网上浸泡、沉积或喷涂绝缘材料形成的沉积层。在其他实施例中，也可以是金属网的原材料先进行浸泡、沉积或喷涂绝缘材料形成绝缘层82之后再成型成金属网。
透气隔离件本体81包括贴设于所述发声单体3的底壁811以及由底壁811的周缘朝向所述振膜31的方向弯折延伸形成的延伸部812以及由延伸部812向远离所述发声单体3的方向弯折延伸的固定部813；所述固定部813与所述挡墙1111通过封胶密封固定。
以上所述的仅是本发明的实施方式，在此应当指出，对于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 (6)

  1. 一种扬声器箱，包括具有收容空间的壳体以及收容于所述收容空间的发声单体，所述发声单体包括振膜，所述振膜将所述收容空间分隔为前腔和后腔，所述发声单体还设有用于与外部电路电连接的焊盘，其特征在于，所述扬声器箱还包括盖设于所述发声单体的透气隔离件，所述透气隔离件位于所述后腔，所述透气隔离件包括透气隔离件本体以及包覆在所述透气隔离件本体上的绝缘层。
  2. 根据权利要求1所述的扬声器箱，其特征在于，所述透气隔离件本体为金属网，所述绝缘层由浸泡、喷涂或沉积在所述金属网上的绝缘材料形成。
  3. 根据权利要求1所述的扬声器箱，其特征在于，所述透气隔离件本体由金属材料制成的网状结构，所述金属材料的外表面包覆绝缘层，所述绝缘层由浸泡、喷涂或沉积在所述金属材料的绝缘材料形成。
  4. 根据权利要求2或3所述的扬声器箱，其特征在于，所述透气隔离件包括贴设于所述发声单体的底壁以及由底壁的周缘朝向所述振膜的方向弯折延伸形成的延伸部以及由延伸部向远离所述发声单体的方向弯折延伸的固定部；所述固定部与所述壳体固定连接。
  5. 根据权利要求4所述的扬声器箱，其特征在于，所述壳体包括前盖以及与前盖组配形成收容空间的后盖，前盖包括塑料件及注塑固定于所述塑料件的加强件；
    所述塑料件包括挡墙、与所述挡墙的一端连接的底壁、自所述挡墙一侧凸伸出的出声部、由所述挡墙和所述底壁围合形成的安装槽；
    所述发声单体固定于所述安装槽，所述固定部与所述挡墙固定连接。
  6. 根据权利要求5所述的扬声器箱，其特征在于，所述加强件包括本体及自所述本体向所述塑料件内延伸形成的多个围壁，所述围壁围合形成通孔，所述通孔被所述塑料件的塑料填充。
PCT/CN2020/141849 2020-12-18 2020-12-30 扬声器箱 WO2022126784A1 (zh)

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