WO2022006931A1 - 振膜及扬声器 - Google Patents

振膜及扬声器 Download PDF

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Publication number
WO2022006931A1
WO2022006931A1 PCT/CN2020/102053 CN2020102053W WO2022006931A1 WO 2022006931 A1 WO2022006931 A1 WO 2022006931A1 CN 2020102053 W CN2020102053 W CN 2020102053W WO 2022006931 A1 WO2022006931 A1 WO 2022006931A1
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WO
WIPO (PCT)
Prior art keywords
fixing portion
loudspeaker
film
mesh layer
elastic body
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Application number
PCT/CN2020/102053
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English (en)
French (fr)
Inventor
刘志伟
惠耀
陈星弛
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技（南京）有限公司
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Application filed by 瑞声声学科技(深圳)有限公司, 瑞声科技（南京）有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022006931A1 publication Critical patent/WO2022006931A1/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • 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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the present application relates to the field of sound and electricity, and in particular, to a diaphragm and a speaker.
  • the magnetic loudspeaker may include a vibro-acoustic system with a voice coil and a diaphragm and a magnetic circuit system with a magnetic circuit, the vibrating-acoustic system includes a voice coil and a diaphragm, and the voice coil is connected to an external circuit through a flexible circuit board
  • the magnetic circuit system In order to receive the electrical signal and generate a first magnetic field, the magnetic circuit system generates a second magnetic field, and the interaction of the first magnetic field and the second magnetic field makes the diaphragm vibrate to emit sound.
  • the existing flexible circuit board connected to the voice coil generally has a lever structure inside, but the fatigue characteristics of the lever structure are not good, so that the flexible circuit board is easily damaged, so that the flexible circuit has the flexible circuit The reliability, longevity and/or low frequency performance of the panel's speakers are affected.
  • the purpose of the present application is to provide a diaphragm and a loudspeaker that can improve the reliability, life and/or low frequency performance of the loudspeaker.
  • a vibrating membrane the vibrating membrane includes an elastic body and a conductive mesh layer attached and fixed to the elastic body, the conductive mesh layer includes a plurality of metal wires arranged at intervals and a plurality of A plastic wire in which the metal wires are arranged in a crisscross pattern.
  • the elastomer is a rubber elastomer, a silicone rubber elastomer or a thermoplastic elastomer.
  • the diaphragm includes an elastic body, a conductive mesh layer, and an elastic body which are stacked in sequence.
  • the conductive mesh layer and the elastomer are integrally formed by film pressing, injection molding or hot pressing.
  • the metal wires and the plastic wires of the conductive mesh layer are arranged to cross vertically.
  • a loudspeaker the loudspeaker comprises a basin frame, a vibration system and a magnetic circuit system respectively fixed on the basin frame, the vibration system comprises a sound film fixed on the basin frame, and a voice coil for driving the sound film to vibrate and produce sound, the
  • the sound membrane includes a dome and a fold ring arranged around the dome, and the fold ring is the vibrating membrane described in any one of the above.
  • the folding ring includes a first fixing part connected with the dome, a second fixing part connected with an external circuit, and a connecting part connecting the first fixing part and the second fixing part, the The wire extends from the first fixing part to the second fixing part.
  • the speaker further includes a pad disposed on the first fixing portion and a conductive terminal disposed on the second fixing portion, and the lead wire of the voice coil passes through the pad and one end of the metal wire For electrical connection, the other end of the metal wire is electrically connected to an external circuit through the conductive terminal.
  • the vibration system includes an elastic support membrane fixed to the basin frame and connected to an end of the voice coil away from the sound membrane, and the elastic support membrane is the vibration membrane described in any one of the above.
  • the elastic support membrane comprises a third fixing part connected with the voice coil, a fourth fixing part connected with the basin frame, and an elastic connection connecting the third fixing part and the fourth fixing part part, the metal wire extends from the third fixing part to the fourth fixing part.
  • the present application provides a diaphragm and a loudspeaker, wherein the sound diaphragm of the loudspeaker adopts a sound film comprising an elastic body and a conductive mesh layer that is attached and fixed to the elastic body.
  • the diaphragm is made of the above-mentioned diaphragm, and the conductive metal wire and the plastic wire are used to cross the conductive mesh layer to replace the flexible circuit FPC, which avoids the fatigue and fracture problem of the flexible circuit FPC, and improves the reliability, life and/or reliability of the speaker. or low-frequency performance, while reducing assembly steps, reducing costs, and improving assembly speed and accuracy.
  • the conductive mesh layer and the elastomer are formed into one body by a film pressing, injection molding or hot pressing process, the process is simple, and it is convenient for mass production and processing.
  • the elastomer is one or more of rubber, silicone rubber, and thermoplastic elastomer, and the cost of raw materials is low, which is conducive to reducing production costs.
  • the vertical cross arrangement of the metal wires and the plastic wires of the conductive mesh layer is beneficial to improve the elongation at break of the conductive mesh layer in all directions, thereby reducing the problem of circuit breakage caused by breakage .
  • FIG. 1 is a schematic diagram of a three-dimensional structure of a speaker provided by an embodiment of the present application.
  • Fig. 2 is the exploded schematic diagram of the loudspeaker shown in Fig. 1;
  • Fig. 3 is the exploded schematic diagram of the sound film of the loudspeaker shown in Fig. 1;
  • FIG. 4 is a schematic three-dimensional structural diagram of a diaphragm provided by an embodiment of the present application.
  • FIG. 5 is an exploded schematic diagram of a diaphragm provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of the conductive mesh layer of the diaphragm shown in FIG. 4 .
  • diaphragm 100 diaphragm 100; elastomer 101; conductive mesh layer 102; plastic wire 102b; metal wire 102a; basin frame 20; pad 40; conductive terminal 50; magnetic circuit system 30; 11; dome 111; folding ring 112; voice coil 12; elastic support film 13.
  • FIG. 1 is a schematic diagram of a three-dimensional structure of a loudspeaker 1 provided by an embodiment of the present application
  • FIG. 2 is an exploded schematic view of the loudspeaker 1 shown in FIG. 1
  • the speaker 1 includes a basin frame 20 and a vibration system 10 and a magnetic circuit system 30 respectively fixed to the basin frame 20 .
  • the basin frame 20 supports the vibration system 10 and the magnetic circuit system 30 , so that the vibration system 10 is driven by the magnetic circuit system 30 to vibrate voice.
  • the vibration system 10 includes a sound membrane 11 fixed on the basin frame 20 , and a voice coil 12 that drives the sound membrane 11 to vibrate and produce sound under the action of the magnetic circuit system 30 .
  • the magnetic circuit system 30 includes a splint 31 connected to one end of the basin frame 20 away from the sound film 11 and a magnetic steel 32 fixed between the splint 31 and the sound film 11.
  • the magnetic steel 32 includes a main magnetic steel 321, located in the main magnetic steel
  • the auxiliary magnetic steel 322 around 321, the pole core 323 attached to the main magnetic steel 321, the main magnetic steel 321 and the auxiliary magnetic steel 322 located around form a magnetic gap
  • the voice coil 12 is located in the magnetic gap
  • the sound of the vibration system 10 is
  • the membrane 11 includes a dome 111 and a ring 112 disposed around the dome 111 .
  • FIG. 4 is a schematic three-dimensional structure diagram of a diaphragm 100 provided by an embodiment of the present application
  • FIG. 5 is an exploded schematic diagram of a diaphragm 100 provided by an embodiment of the present application
  • FIG. 6 is FIG. 4 A schematic structural diagram of the conductive mesh layer 102 of the diaphragm 100 shown.
  • the folding ring 112 is made of the diaphragm 100 .
  • the diaphragm 100 includes an elastic body 101 and a conductive mesh layer 102 attached and fixed to the elastic body 101, wherein the conductive mesh layer 102 includes a plurality of metal wires 102a arranged at intervals and a plurality of plastic wires arranged in a cross with the metal wires 102a. 102b.
  • the metal wires 102a and the plastic wires 102b of the conductive mesh layer 102 are arranged in a vertical cross, which can make the structure of the conductive mesh layer 102 more stable, and the force is more uniform during the vibration of the diaphragm 100. The reliability of the conductive mesh layer 102 is increased.
  • the elastomer 101 is one or more of rubber, silicone rubber, and thermoplastic elastomer.
  • the diaphragm 100 includes an elastic body 101 , a conductive mesh layer 102 , and an elastic body 101 stacked in sequence, wherein the conductive mesh layer 102 and the elastic body 101 are integrally formed by film pressing, injection molding or hot pressing.
  • the material of the elastic body 101 includes rubber
  • the conductive mesh layer 102 and the elastic body 101 can be integrally formed by a film pressing process.
  • the material of the elastic body 101 includes silicone
  • the conductive mesh layer 102 and the elastic body 101 can be formed through The injection molding process is integrally formed.
  • the conductive mesh layer 102 and the elastomer 101 can be integrally formed by a hot pressing process.
  • the elastomer 101 uses one or more of rubber, silicone rubber, and thermoplastic elastomers as raw materials, the raw material cost is low, and the conductive mesh layer 102 is formed into one through film pressing, injection molding or hot pressing process, the process is simple and convenient. Mass production and processing.
  • Table 1 shows the conductive mesh layer 102 of the diaphragm 100 under two tensile experiments in the vertical direction TD, the horizontal direction MD, and the 45-degree direction with an included angle of 45 degrees from the horizontal direction respectively.
  • the folding ring 112 includes a first fixing portion 112a connected to the dome 111, a second fixing portion 112b connected to an external circuit, and a connection connecting the first fixing portion 112a and the second fixing portion 112b
  • the metal wire 102a of the folding ring 112 extends from the first fixing portion 112a to the second fixing portion 112b.
  • the speaker 1 further includes a pad 40 provided on the first fixing portion 112a and a conductive terminal 50 provided on the second fixing portion 112b, wherein the lead 121 of the voice coil 11 passes through the pad 40 and the metal wire of the sound membrane 11
  • One end of the wire 102a is electrically connected, and the other end of the wire 102a is electrically connected to the external circuit through the conductive terminal 50.
  • the voice coil 11 is in the magnetic circuit system 30. Vibration is generated under the action, thereby driving the sound membrane 11 to vibrate to produce sound.
  • the conductive mesh layer 102 is formed by cross-arranging conductive metal wires 102a and non-conductive plastic wires 102b, which can replace the flexible circuit FPC, avoid the fatigue fracture problem of the flexible circuit FPC, and improve the reliability, life and/or low frequency of the speaker 1. performance, while reducing assembly steps and costs, thereby increasing assembly speed and accuracy.
  • the vibration system 10 further includes an elastic support film 13 fixed on the basin frame 20 and connected to the end of the voice coil 12 away from the sound film 11 .
  • the elastic support film 13 may also be made of the vibrating film 100 .
  • the elastic support film 13 includes a third fixing portion 131 connected with the voice coil 11 , a fourth fixing portion 132 connected with the basin frame 20 , and connecting the third fixing portion 131 and the fourth fixing portion 132
  • the elastic connecting portion 133 of the above, the metal wire 102a extends from the third fixing portion 131 to the fourth fixing portion 132.
  • the speaker 1 further includes a pad 40 arranged on the third fixing portion 131 and a pad 40 arranged on the fourth fixing portion 132.
  • the conductive terminal 50 and the lead 121 of the voice coil 11 can also be electrically connected to one end of the metal wire 102a of the elastic support film 13 through the pad 40 , and the other end of the metal wire 102a is electrically connected to the external circuit through the conductive terminal 50 .
  • the vibration system 10 further includes a connecting frame 14 that is fixedly connected to the voice coil 12 at one end away from the elastic support membrane 13 and is fixedly connected to the voice membrane 11.
  • the voice coil 12 is provided with a connecting frame 14, which can control the voice coil. 12 The swaying caused by the vibration and sound production ensures the sound production stability of the speaker 1 .
  • the present application provides a speaker 1.
  • the sound film 11 of the speaker 1 is made of a diaphragm 100 including an elastic body 101 and a conductive mesh layer 101 attached and fixed to the elastic body 101.
  • Conductive metal wires 102a and plastic The wires 102b are arranged crosswise to form a conductive mesh layer 102 to replace the flexible circuit FPC, which avoids the fatigue fracture problem of the flexible circuit FPC, improves the reliability, life and/or low frequency performance of the speaker 1, and reduces assembly processes and costs, thereby improving assembly. speed and precision.

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

Abstract

本申请提供一种振膜及扬声器，所述振膜包括弹性体以及与所述弹性体贴合固定的导电网格层，所述导电网格层包括若干间隔排列的金属丝以及若干与所述金属丝交叉排列的塑料丝。与相关技术相比，本申请利用导电的金属丝以及若干与所述金属丝交叉排列的塑料丝制成所述导电网格层替代FPC，避免了FPC疲劳断裂问题，提升了扬声器可靠性、寿命及/或低频性能，同时减少装配工序，降低了成本，进而提升装配速度和精度。

Description

振膜及扬声器 技术领域
本申请涉及声电领域，尤其涉及一种振膜及扬声。
 背景技术
随着移动互联网时代的到来，智能移动终端的数量不断上升。而在众多智能移动终端之中，穿戴类设备及手机无疑是最常见、最便携的移动终端。目前，穿戴类设备及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被大量应用到现在的智能移动终端之中。
扬声器包括磁式扬声器、静电扬声器、压电扬声器等多种类型。其中，磁式扬声器被广泛应用在现在的智能移动终端中组件。其中，磁式扬声器可以包括具有音圈和振膜的振声系统及具有磁路的磁路系统，所述振声系统包括音圈和振膜，所述音圈通过软性电路板连接外部电路以接收电信号并产生第一磁场，所述磁路系统产生第二磁场，所述第一磁场与所述第二磁场相互作用使得所述振膜振动而发出声音。
然而，现有连接所述音圈的软性电路板内部一般具有力臂结构，但是所述力臂结构的疲劳特性不佳，导致所述软性电路板易损坏，从而具有所述软性电路板的扬声器的可靠性、寿命及/或低频性能受到影响。
因此，有必要提供一种新的扬声器解决上述至少一个技术问题。
 技术问题
本申请的目的在于提供一种能提升扬声器可靠性、寿命及/或低频性能的振膜及扬声器。
 技术解决方案
本申请的技术方案如下：一种振膜，所述振膜包括弹性体以及与所述弹性体贴合固定的导电网格层，所述导电网格层包括若干间隔排列的金属丝以及若干与所述金属丝交叉排列的塑料丝。
优选地，所述弹性体为橡胶弹性体、硅橡胶弹性体或热塑性弹性体。
优选地，所述振膜包括依次堆叠设置的弹性体、导电网格层、弹性体。
优选地，所述导电网格层与所述弹性体通过膜压、注塑或热压工艺成型于一体。
优选地，所述导电网格层的所述金属丝与所述塑料丝垂直交叉排列。
一种扬声器，所述扬声器包括盆架以及分别固定于盆架的振动系统和磁路系统，振动系统包括固定于所述盆架的音膜、驱动所述音膜振动发声的音圈，所述音膜包括球顶以及环绕所述球顶设置的折环，所述折环为上述任意一项所述的振膜。
优选地，所述折环包括与所述球顶连接的第一固定部、与外部电路连接的第二固定部及连接所述第一固定部与所述第二固定部的连接部，所述金属丝自所述第一固定部延伸至所述第二固定部。
优选地，所述扬声器还包括设置于所述第一固定部的焊盘以及设置于所述第二固定部的导电端子，所述音圈的引线通过所述焊盘与所述金属丝的一端电连接，所述金属丝的另一端通过所述导电端子与外部电路电连接。
优选地，所述振动系统包括固定于所述盆架并连接于所述音圈远离所述音膜一端的弹性支撑膜，所述弹性支撑膜为上述任意一项所述的振膜。
优选地，所述弹性支撑膜包括与所述音圈连接的第三固定部、与所述盆架连接的第四固定部及连接所述第三固定部与所述第四固定部的弹性连接部，所述金属丝自所述第三固定部延伸至所述第四固定部。
 有益效果
本申请的有益效果在于：与相关技术相比，本申请的提供的一种振膜及扬声器，所述扬声器的音膜采用包括弹性体以及与所述弹性体贴合固定的导电网格层的所述振膜制成，利用导电的所述金属丝与所述塑料丝交叉排列成所述导电网格层替代柔性电路FPC，避免了柔性电路FPC疲劳断裂问题，提升了扬声器可靠性、寿命及/或低频性能，同时减少装配工序，降低了成本，进而提升装配速度和精度。
进一步地，所述导电网格层与所述弹性体通过膜压、注塑或热压工艺成型于一体，工艺简单，便于大规模生产加工。
进一步地，所述弹性体为橡胶、硅橡胶、热塑性弹性体中的一种或几种，原料成本低，有利于降低生产成本。
进一步地，所述导电网格层的所述金属丝与所述塑料丝垂直交叉排列有利于提高所述导电网格层在各个方向上的断裂伸长率，从而降低因断裂导致的电路断路问题。
 附图说明
为了更清楚地说明本申请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申请的一些实施例，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是本申请一种实施例提供的扬声器的立体结构示意图；
图2是图1所示扬声器的分解示意图；
图3是图1所示扬声器的音膜的分解示意图；
图4是本申请一种实施例提供的振膜的立体结构示意图；
图5是本申请一种实施例提供的振膜的分解示意图；
图6是图4所示振膜的导电网格层的结构示意图。
主要元件符号说明：振膜100；弹性体101；导电网格层102；塑料丝102b；金属丝102a；盆架20；焊盘40；导电端子50；磁路系统30；振动系统10；音膜11；球顶111；折环112；音圈12；弹性支撑膜13。
 本发明的实施方式
下面结合附图和实施方式对本申请作进一步说明。
需要说明的是，本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”和“第三”等是用于区别不同对象，而非用于描述特定顺序。此外，术语“包括”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
本申请实施例中所有方向性指示(诸如上、下、左、右、前、后、内、外、顶部、底部……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。当元件被称为“固定于”或“设置于”另一个元件上时，该元件可以直接在另一个元件上或者可能同时存在居中元件。当一个元件被称为“连接”另一个元件，它可以是直接连接另一个元件或者可能同时存在居中元件。
请参阅图1-图3，图1是本申请一种实施例提供的扬声器1的立体结构示意图；图2是图1所示扬声器1的分解示意图；图3是图1所示扬声器1的音膜11的分解示意图。该扬声器1包括盆架20以及分别固定于盆架20的振动系统10和磁路系统30，盆架20支撑振动系统10和磁路系统30，使振动系统10在磁路系统30的驱动下振动发声。
其中，振动系统10包括固定于盆架20的音膜11、在所述磁路系统30的作用下驱动音膜11振动发声的音圈12。磁路系统30包括连接于盆架20远离音膜11一端的夹板31及固定在夹板31与音膜11之间的磁钢32，进一步地，磁钢32包括主磁钢321、位于主磁钢321四周的副磁钢322、贴设于主磁钢321上的极芯323，主磁钢321与位于四周的副磁钢322形成磁间隙，音圈12位于磁间隙中，振动系统10的音膜11包括球顶111以及环绕球顶111设置的折环112。
请参阅图4-图6，图4是本申请一种实施例提供的振膜100的立体结构示意图；图5是本申请一种实施例提供的振膜100的分解示意图；图6是图4所示振膜100的导电网格层102的结构示意图。根据本申请一种实施例，折环112采用振膜100制成。
其中，振膜100包括弹性体101以及与弹性体101贴合固定的导电网格层102，其中，导电网格层102包括若干间隔排列的金属丝102a以及若干与金属丝102a交叉排列的塑料丝102b。在一种实施例中，导电网格层102的金属丝102a与塑料丝102b呈垂直交叉排列，可以使导电网格层102的结构更加稳定，在振膜100的振动过程中受力更加均匀，增加了导电网格层102的可靠性。
进一步地，弹性体101为橡胶、硅橡胶、热塑性弹性体中的一种或几种。振膜100包括依次堆叠设置的弹性体101、导电网格层102、弹性体101，其中，导电网格层102与弹性体101通过膜压、注塑或热压工艺成型于一体。具体的，弹性体101的材料包括橡胶时，导电网格层102与弹性体101可以通过膜压工艺成型于一体，弹性体101的材料包括硅胶时，导电网格层102与弹性体101可以通过注塑工艺成型于一体，弹性体101的材料包括热塑性弹性体时，导电网格层102与弹性体101可以通过热压工艺成型于一体。弹性体101以橡胶、硅橡胶、热塑性弹性体中的一种或几种作为原材料，原料成本低，且与导电网格层102通过膜压、注塑或热压工艺成型于一体，工艺简单，便于大规模生产加工。
请参阅表1，表1是振膜100的导电网格层102分别在延垂直方向TD、水平方向MD及与水平方向呈45度夹角的45度方向上分别进行2次拉伸实验下的测试数据：
表1
  试样厚度(mm) 最大力(N) 断裂伸长率(％) 拉伸强度(MPa) 弹性模量(MPa)
MD-1 0.0485 30.5 17.3 62.9 632.9
MD-2 0.0501 39.0 28.3 77.8 567.1
TD-1 0.0505 39.8 40.8 78.8 350.8
TD-2 0.0497 39.5 42.2 79.5 221.6
45度-1 0.0495 29.2 63.4 58.9 127.4
45度-2 0.0504 26.7 63.3 53.0 115.6
由以上实验数据可以看出，振膜100的导电网格层102在垂直方向TD和与水平方向呈45度夹角的45度方向断裂伸长率较高，可以有效降低了因大幅振动导致的断裂。
根据本申请的一种实施例，折环112包括与球顶111连接的第一固定部112a、与外部电路连接的第二固定部112b及连接第一固定部112a与第二固定部112b的连接部112c，折环112的金属丝102a自第一固定部112a延伸至第二固定部112b。
进一步地，扬声器1还包括设置于第一固定部112a的焊盘40以及设置于第二固定部112b的导电端子50，其中，音圈11的引线121通过焊盘40与音膜11的金属丝102a的一端电连接，金属丝102a的另一端通过导电端子50与外部电路电连接，当导电端子50接通外部电路并使音圈11接收外部电流信号时，音圈11在磁路系统30的作用下产生振动，从而带动音膜11振动发出声音。利用导电的金属丝102a与不导电的塑料丝102b交叉排列制成导电网格层102，可以替代柔性电路FPC，避免了柔性电路FPC疲劳断裂问题，提升了扬声器1可靠性、寿命及/或低频性能，同时减少装配工序，降低了成本，进而提升装配速度和精度。
振动系统10还包括固定于盆架20并连接于音圈12远离音膜11一端的弹性支撑膜13，本实施例中，弹性支撑膜13设有4个，分别位于音圈12的四角，根据本申请一种实施例，弹性支撑膜13也可以采用振膜100制成。
根据本申请的一种实施例，弹性支撑膜13包括与音圈11连接的第三固定部131、与盆架20连接的第四固定部132及连接第三固定部131与第四固定部132的弹性连接部133，金属丝102a自第三固定部131延伸至第四固定部132，可以理解，扬声器1还包括设置于第三固定部131的焊盘40以及设置于第四固定部132的导电端子50，音圈11的引线121还可以通过焊盘40与弹性支撑膜13的金属丝102a的一端电连接，金属丝102a的另一端通过导电端子50与外部电路电连接。
根据本申请的一种实施例，振动系统10还包括罩设于音圈12远离弹性支撑膜13一端与音膜11固定连接的连接骨架14，音圈12上设置连接骨架14，可以控制音圈12因振动发声产生的摇摆，保障了扬声器1的发声稳定性。
本申请的提供的一种扬声器1，扬声器1的音膜11采用包括弹性体101以及与弹性体101贴合固定的导电网格层101的振膜100制成，利用导电的金属丝102a与塑料丝102b交叉排列成导电网格层102替代柔性电路FPC，避免了柔性电路FPC疲劳断裂问题，提升了扬声器1可靠性、寿命及/或低频性能，同时减少装配工序，降低了成本，进而提升装配速度和精度。
以上所述的仅是本申请的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本申请创造构思的前提下，还可以做出改进，但这些均属于本申请的保护范围。 

Claims (10)

1. 一种振膜，其特征在于：所述振膜包括弹性体以及与所述弹性体贴合固定的导电网格层，所述导电网格层包括若干间隔排列的金属丝以及若干与所述金属丝交叉排列的塑料丝。
2. 根据权利要求1所述的振膜，其特征在于：所述弹性体为橡胶弹性体、硅橡胶弹性体或热塑性弹性体。
3. 根据权利要求1所述的振膜，其特征在于：所述振膜包括依次堆叠设置的所述弹性体、所述导电网格层、所述弹性体。
4. 根据权利要求3所述的振膜，其特征在于：所述导电网格层与所述弹性体通过膜压、注塑或热压工艺成型于一体。
5. 根据权利要求1所述的振膜，其特征在于：所述导电网格层的所述金属丝与所述塑料丝垂直交叉排列。
6. 一种扬声器，所述扬声器包括盆架以及分别固定于盆架的振动系统和磁路系统，振动系统包括固定于所述盆架的音膜、驱动所述音膜振动发声的音圈，所述音膜包括球顶以及环绕所述球顶设置的折环，其特征在于，所述折环为如权利要求1至5中任意一项所述的振膜。
7. 根据权利要求6所述扬声器，其特征在于：所述折环包括与所述球顶连接的第一固定部、与外部电路连接的第二固定部及连接所述第一固定部与所述第二固定部的连接部，所述金属丝自所述第一固定部延伸至所述第二固定部。
8. 根据权利要求7所述扬声器，其特征在于：所述扬声器还包括设置于所述第一固定部的焊盘以及设置于所述第二固定部的导电端子，所述音圈的引线通过所述焊盘与所述金属丝的一端电连接，所述金属丝的另一端通过所述导电端子与外部电路电连接。
9. 根据权利要求6所述扬声器，其特征在于：所述振动系统包括固定于所述盆架并连接于所述音圈远离所述音膜一端的弹性支撑膜，所述弹性支撑膜为如权利要求1至5中任意一项所述的振膜。
10. 根据权利要求9所述的扬声器，其特征在于：所述弹性支撑膜包括与所述音圈连接的第三固定部、与所述盆架连接的第四固定部及连接所述第三固定部与所述第四固定部的弹性连接部，所述金属丝自所述第三固定部延伸至所述第四固定部。
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