WO2014079376A1 - 电声换能器 - Google Patents

电声换能器 Download PDF

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Publication number
WO2014079376A1
WO2014079376A1 PCT/CN2013/087609 CN2013087609W WO2014079376A1 WO 2014079376 A1 WO2014079376 A1 WO 2014079376A1 CN 2013087609 W CN2013087609 W CN 2013087609W WO 2014079376 A1 WO2014079376 A1 WO 2014079376A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal layer
layer
electroacoustic transducer
diaphragm body
voice coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2013/087609
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English (en)
French (fr)
Inventor
赵国栋
葛连山
蔡晓东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goertek Inc
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Goertek Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Goertek Inc filed Critical Goertek Inc
Priority to KR1020157006873A priority Critical patent/KR101638755B1/ko
Priority to US14/430,881 priority patent/US9503822B2/en
Publication of WO2014079376A1 publication Critical patent/WO2014079376A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00Electrostatic transducers
    • H04R19/02Loudspeakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02Details
    • H04R9/04Construction, mounting, or centering of coil
    • H04R9/046Construction
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/02Casings; Cabinets ; Supports therefor; Mountings therein
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00Electrostatic transducers
    • H04R19/005Electrostatic transducers using semiconductor materials
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06Loudspeakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/06Arranging circuit leads; Relieving strain on circuit leads
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00Diaphragms for electromechanical transducers; Cones
    • H04R7/02Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04Plane diaphragms
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00Diaphragms for electromechanical transducers; Cones
    • H04R7/16Mounting or tensioning of diaphragms or cones
    • H04R7/18Mounting or tensioning of diaphragms or cones at the periphery

Definitions

  • the present invention relates to the field of electroacoustics, and in particular to an electroacoustic transducer. Background technique
  • the electroacoustic transducer includes a diaphragm and a voice coil coupled to one side of the diaphragm, and further includes an electrical connector electrically connecting the internal circuit of the electroacoustic transducer and the external circuit, wherein the voice coil includes two sounds.
  • the loop leads, the two voice coil leads are electrically connected to the two electrodes of the electrical connector by spot welding, etc., and the electrical connector is electrically connected to the external circuit at the same time to control the electrical signal in the voice coil through the electrical signal of the terminal product.
  • the lead of the voice coil needs to follow a certain thread to realize electrical connection with the electrical connector.
  • the voice coil lead is easily broken and the product is defective.
  • the present invention is for an electroacoustic transducer, which can avoid the problem that the voice coil lead is broken due to excessive thread length, and the reliability of the product is better.
  • the present invention provides an electroacoustic transducer including a diaphragm body portion and a voice coil coupled to one side of the diaphragm body portion, wherein the diaphragm body portion includes a non-conductive substrate a layer and a power-seeking metal house, the substrate layer comprising at least two layers, the metal layer being disposed between any two adjacent layers of the substrate layer;
  • a first conductive terminal electrically connected to the voice coil is disposed on the metal layer, and each of the substrate layers between the metal layer and the voice coil is provided with a material to avoid the first guide Opening of the electrical terminal;
  • a central portion of the diaphragm body portion is coupled with a rigid reinforcing layer, the reinforcing layer is coupled to a side of the diaphragm body portion away from the voice coil, and the reinforcing layer covers the first conductive terminal Area.
  • the metal layer is further provided with a second conductive rib that is exposed to each of the substrate layers, and the second conductive terminal is located at an edge of the diaphragm body portion.
  • the surfaces of the first conductive terminal and the second conductive terminal are plated with a metal protective layer.
  • the electroacoustic transducer further includes a housing that houses the diaphragm body portion, and the second housing of the housing is disposed at a position corresponding to the second conductive terminal. Ludian Ruizi electrically connected electrical connectors.
  • the materials of the substrate layers are one or more of PEEK, PEN, PE, PAR, PET, W, and PES.
  • the metal layer is a copper foil or a copper metal layer formed by electroplating; and the metal protective layer is a tin metal layer.
  • the diaphragm body portion includes a ball top portion at a central position, a folding ring portion at an edge position, and a joint portion at an edge of the folding ring portion for coupling with the casing;
  • the metal layer includes a first metal layer distributed on top of the ball, a second metal layer distributed on the bonding portion, and a first metal layer and a portion distributed on the folding ring portion a third metal layer of the second metal layer; wherein the first metal layer and the second metal layer are respectively provided with two independent parts, and the two parts of the first metal house and the second metal layer And the third metal layer forms two separate electrodes.
  • first metal layer and the second metal layer are annular structures, and the first metal layer and the second metal layer are both disposed on the first metal layer
  • the layer and the second metal layer form a two-part break
  • the third metal layer is a strip structure
  • the diaphragm is a rectangular structure, and the third metal layer is distributed on two long axis sides of the rectangular diaphragm.
  • the three metal layers are three strip structures arranged in parallel.
  • the electroacoustic transducer of this structure can avoid the defects such as the disconnection of the voice coil lead due to the excessive length of the thread during the work, and improve the stability of the product.
  • FIG. 1 is a perspective view showing the structure of an electroacoustic transducer according to an embodiment of the present invention
  • FIG. 2 is a perspective view showing the structure of an electroacoustic transducer vibrating system according to an embodiment of the present invention
  • Figure 3 is a schematic enlarged view of the portion A shown in Figure 2;
  • FIG. 4 is a perspective view of a diaphragm of an electroacoustic transducer according to an embodiment of the present invention
  • FIG. 5 is a front structural view of a diaphragm of an electroacoustic transducer according to an embodiment of the present invention
  • an electroacoustic transducer of an embodiment of the present invention includes a vibration system, a magnetic circuit system (not shown in the drawings, common knowledge in the art), and a fixed vibration system and a magnetic circuit system.
  • the vibration system includes a diaphragm 1 and a voice coil 2 coupled to the lower side of the diaphragm 1.
  • the voice coil 2 is electrically connected to an external circuit, and the electrical signal in the terminal product controls the voice coil 2
  • the electric signal, the voice coil 2 with the electric signal in the working process interacts with the magnetic circuit system to vibrate up and down, and then drives the diaphragm 1 to vibrate to generate sound.
  • the diaphragm 1 comprises a flexible diaphragm body portion 12 and a rigid reinforcing portion 11, rigid plus The strong portion 1 1 is coupled to the center position of the diaphragm body portion 12 for raising the high frequency characteristics of the diaphragm 1.
  • the diaphragm body portion 12 is composed of a non-conductive base material layer and a conductive metal layer.
  • the base material layer includes at least two layers, and the metal layer is bonded between any adjacent two base material layers to prevent the metal layer 122 from Other components are short-circuited; preferably, the material of each substrate layer is
  • PEE ⁇ PEN One or more of PEE ⁇ PEN , PEI, FAR, ⁇ ⁇ PPS, PES.
  • the reinforcing portion 11 and the diaphragm body portion 12 are integrally joined by a colloid 123.
  • the diaphragm body portion 12 of the present embodiment includes two base material layers 121 and is bonded to two substrates.
  • the metal layer 122 between the layers 121 is a copper foil in the present embodiment.
  • the substrate layer 121 and the metal layer 122 are bonded by the colloid 123, but are not limited to such a bonding method.
  • the metal layer 122 is not limited to the structure of such a metal foil, and may be a metal layer formed by plating on the base material layer 121, such as a copper metal layer formed by electroplating.
  • Figure 4 is a perspective view of the diaphragm
  • Figure 5 is a schematic view of the front side of the diaphragm (i.e., the side away from the voice coil)
  • Figure 6 is a schematic view of the reverse side of the diaphragm (ie, the side combined with the sound «), such as 4 to 6
  • the metal layer 122 includes a first metal layer 122a on the inner side, a second metal layer 122b on the outer side, and a third metal house 122c connecting the first metal layer 122a and the second metal layer 122b;
  • the first metal layer 122'a and the second metal layer 122b each comprise two separate portions to form two independent electrodes.
  • the diaphragm body portion 12 includes a ball top portion at a center plane, a concave folded portion at the edge, and an outer casing at the edge of the folding ring portion.
  • the joint portion 120 is fixedly coupled; the reinforcing portion 11 is coupled to the ball portion, and the joint portion 120 is fixedly coupled to the upper surface of the casing 3.
  • the first metal layer 122a is a rectangular ring structure located at a position on the top edge of the ball body 12 near the folding ring portion, and the first metal layer 122a is electrically connected to the voice coil 2; two leads electrically connected to the independent electrodes 2, the present invention is formed in two portions two open short sides of the first rectangular ring 122 a metal layer 123, respectively, where the position of the disconnect portion of the metal layer 123 is not provided 122, the first metal layer 122a is formed into two parts, and these two parts are used as two independent electrodes, as shown in FIG.
  • first metal layer 122a it is further provided with a first annular conductive terminal electrically connected to the metal layer 122a in a sleeping mat 13a, teach first conductive terminal 13 a quantity of at least two, and a coil 2 The two leads (outlet ends) are electrically connected.
  • first conductive terminal 13a are provided for each electrode, and the lead wires of the voice coil 2 can be two with the corresponding electrodes. Any one of the conductive terminals 13a is electrically connected.
  • the diaphragm body 12 is disposed on the base material layer 121 adjacent to the voice coil 2 side, and the corresponding first conductive neutron 13 a is provided with a escaping opening to facilitate the conductive connection of the lead wire of the voice coil 2 and the first conductive terminal 13 a by spot welding.
  • the reinforcing portion 11 can simultaneously serve as a reinforcing plate during the spot welding process to prevent the diaphragm 1 from collapsing during the spot welding process, and the reinforcing portion 11 needs to cover the first conductive terminal 13a.
  • the material of the reinforcing portion 11 is epoxy resin, PET, PEN, metal sheet, PFJ, PAR, FPS or PES.
  • the second metal layer 122b is located at a position where the edge of the diaphragm body portion 1 is combined with the casing 3 to reduce the influence of the metal house 122 on the hardness of the diaphragm 1.
  • the second metal layer 122b has a rectangular annular structure. In order to form two independent electrodes, a broken portion 123 is disposed on the two short sides of the rectangular second metal layer 122b, and the position of the disconnecting portion 123 is not set.
  • Metal layer 122 is shown in FIG.
  • the two corner portions of the second metal layer 122b are provided with a second conductive terminal 13b, and the two second conductive terminals 13b are respectively formed with the second metal layer 122b, as shown in FIG.
  • the base material layer 121 corresponding to the upper side and the lower side of the second electrical terminal 13b is provided with a relief structure for avoiding the second conductive terminal 13b, and the second conductive terminal 13b is exposed to the base material layer 121, as shown in FIGS. 5 and 6.
  • the terminal product can control the electrical signal inside the electroacoustic transducer by electrically connecting the second conductive terminal 13b or the electrical connector 4.
  • the surface of the first conductive terminal 13a and the second conductive terminal 13b is provided with a metal protective layer formed by electroplating, preferably a tin metal layer having good adhesion and ductility.
  • the tri-metal layer 122c is a strip-like structure on the two long sides of the rectangular first metal layer 122a and the rectangular second metal layer 122b, respectively, and the first metal layer 122a
  • One electrode and the second metal layer is electrically connected to a respective one of the electrodes 122b, and the other electrode of the first metal layer 122 a and the undertaking of the respective other electrode 122b is connected to a second metal layer, the third metal layer
  • the structure of 122c on the long side of the rectangle can increase the strength of the long side of the rectangular diaphragm 1, which is beneficial to improve the acoustic performance of the diaphragm 1.
  • the third metal layer 122c is a three strip-like structure arranged in parallel, which can enhance the stability of the electrical connection.
  • the diaphragm body portion 12 is provided with a first conductive terminal 13a electrically conductively coupled to the voice coil 2, and electrically conductively coupled to the terminal product or the electrical connector 4.
  • the structure of the second conductive terminal 13b enables the lead of the voice coil 2 to be electrically connected without going out of a long thread, thereby avoiding the failure of the lead of the voice coil 2 during the working process, and improving the product. Stability; Moreover, the structure can directly connect the internal and external electrical signals of the electroacoustic transducer through the conductive terminals on the diaphragm 1, and the product manufacturing process is completed, thereby improving the production efficiency of the product.

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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

一种电声换能器,包括振膜本体部以及结合于振膜本体部一侧的音圈,振膜本体部包括非导电的基材层和导电的金属层,基材层包括至少两层,金属层设置于任意两层相邻的基材层之间;金属层上设有与音圈导电结合的第一导电端子,金属层与音圈之间的各基材层上设有去料形成的避让第一导电端子的开孔;振膜本体部的中心位置结合有刚性的加强层,加强层结合于振膜本体部远离音圈的一侧,并且加强层覆盖第一导电端子所在的区域。这种结构的电声换能器,可以避免音圈引线由于线程过长在工作过程中发生断线等不良,提高了产品的稳定性。

Description

说 明 书 电声换能器
技术领域
本发明涉及电声领域, 具体涉及一种电声换能器。 背景技术
现有技术中, 电声换能器包括振膜和结合于振膜一侧的音圈, 还 包括电连接电声换能器内部电路和外部电路的电连接件,其中音圈包 括两条音圈引线,两条音圈引线通过点焊等方式分別与电连 *件的两 个电极电连接, 电连接件同时电连接外部电路, 以通过终端产品的电 信号控制音圈中的电信号。
通常音圈的引线需要顺出一定的线程以实现与电连接件的电连 接, 这种结构的电声换能器在音圈振动的时候, 音圈引线容易断线造 成产品的不良。
因此,有必要对这种结构的电声换能器进行改进, 以避免上迷缺 陷。 发明内容
为了解决上述技术问题, 本发明 ·ί是供一种电声换能器,可以避免 音圈引线由于线程过长引起的断线等不良, 产品的可靠性更好。
为了实现上述目的, 本发明提供一种电声换能器, 包括振膜本体 部以及结合于所述振膜本体部一側的音圈, 其中, 所述振膜本体部包 括非导电的基材层和寻电的金属屋, 所述基材层包括至少两层, 所述 金属层设置于任意两层相邻的所述基材层之间;
所述金属层上设有与所述音圈导电结合的第一导电端子,所述金 属层与所述音圈之间的各基材层上设有去料形成的避让所述第一导 电端子的开孔;
所述振膜本体部的中心位置结合有刚性的加强层,所述加强层结 合于所述振膜本体部远离所述音圈的一侧,并且所述加强层覆盖所述 第一导电端子所在的区域。
此外, 优选的方案是, 所述金属层上还设有露出于各所述基材层 的第二导电瑞子, 所述笫二导电端子位于所述振膜本体部的边缘位 置。
此外, 优选的方案是, 所述笫一导电端子和所述第二导电端子的 表面电镀有金属保护层。
此外, 优选的方案是, 所述电声换能器还包括收容固定所述振膜 本体部的壳体,所述壳体上对应于所迷第二导电端子的位置设有与所 述第二鲁电瑞子导电结合的电连接件。
此外,优选的方案是,各所迷基材层的材料为 PEEK、 PEN, PE工、 PAR, PET, W 、 PES中的一种或多种。
此外, 优选的方案是, 所述金属层为铜箔, 或者电镀形成的铜金 属层; 所述金属保护层为锡金属层。
此外, 优选的方案是, 所述振膜本体部包括位于中心位置的球顶 部, 位于边缘位置的折环部, 以及位于所述折环部边缘的用于与所迷 壳体结合的结合部;所述金属层包括分布于所述球顶部上的第一金属 层, 分布于所述结合部上的第二金属层, 以及分布于所述折环部上的 连接所述第一金属层和所述笫二金属层的第三金属层; 其中, 所述第 一金属层和所述笫二金属层上均设有独立的两部分,两部分所述第一 金属屋、 所述第二金属层和所述第三金属层形成两个独立的电极。
此外, 优选的方案是, 所述第一金属层和所述第二金属层为环状 结构,并且在所述第一金属层和所述第二金属层上均设有使所述第一 金属层和所述第二金属层形成两部分的断开部;所述第三金属层为条 状结构 此外, 优选的方案是, 所述振膜为矩形结构, 所述笫三金属层分 布于所述矩形振膜的两个长轴边上。
此外, 优选的方案是, 所述笫三金属层为并列设置的三个条状结 构。
这种结构的电声换能器, 与传统结构相比, 可以避免音圈引线由 于线程过长在工作过程中发生断线等不良, 提高了产品的稳定性。 附图说明
通过下面结合附图对本发明进行描述,本发明的上述特征和技术 优点将会变得更加清楚和容易理解。
图 1 是本发明一个实施例的电声换能器的立体结构示意图; 图 2是本发明一个实施例的电声换能器振动系统的立体结构示 意图;
图 3是图 2所示 A部分的放大结构示意图;
图 4是本发明一个实施例的电声换能器振膜的透视图; 图 5是本发明一个实施例的电声换能器振膜的正面结构示意图; 图 6是本发明一个实施例的电声换能器振膜的反面结构示意图。 真体实施方式
下面结合附图和具体实施例对本发明做进一步详细的描述。 如图〗至图 3所示,本发明一个实旄例的电声换能器包括振动系 统, 磁路系统 (图中未显示, 为本领域公知常识), 以及收容固定振 动系统和磁路系统的壳体 3。 振动系统包括振膜 1和结合于振膜 1 下 侧面的音圈 2, 如图 1和图 2所示, 音圈 2与外部电路电连接, 由终 端产品中的电信号控制音圈 2中的电信号,工作过程中通有电信号的 音圈 2与磁路系统相互作用上下振动 ,进而带动振膜 1振动产生声音。
振膜 1包括柔性的振膜本体部 12和刚性的加强部 11 ,刚性的加 强部 1 1 结合于振膜本体部 12的中心位置, 用于提升振膜 1 的高频特 性。 其中振膜本体部 12由非导电的基材层和导电的金属层构成, 基 材层包括至少两层, 金属层结合于任意相邻的两层基材层之间, 以防 止金属层 122与其他部件发生短路; 优选的, 各基材层的材料为
PEE ^ PEN , PEI、 FAR, ΡΕΊ\ PPS、 PES中的一种或多种。
如图 2和图 3所示,加强部 11与振膜本体部 12之间通过胶体 123 结合为一体, 本实旄例振膜本体部 12包含两层基材层 121和结合于 两层基材层 121之间的金属层 122 , 本实旄例中金属层 122为铜箔 , 其中任一基材层 121和金属层 122之间通过胶体 123结合, 但不限于 这种用胶结合的方式。此外,金属层 122不限于这种金属箔片的结构, 也可以为在基材层 121上电镀形成的金属层,如电镀形成的铜金属层。
图 4为振膜的透视图 , 图 5为振膜的正面 (即远离音圈的一侧) 的结构示意图, 图 6为振膜反面 (即与音 «结合的一側) 的结构示意 图,如图 4至图 6所示,金属层 122包括位于内側的笫一金属层 122a , 位于外侧的第二金属层 122b, 以及连接第一金属层 122a和第二金属 层 122b的笫三金属屋 122c ;其中第一金属层 122'a与第二金属层 122b 均包含两个独立的部分, 以形成两个独立的电极。
此外, 如图 1、 图 2、 图 5和图 6所示, 振膜本体部 12包括位于 中心的平面的球顶部,位于边缘的下凹的折环部, 以及位于折环部边 缘的与外壳固定结合的结合部 120 ; 球项部上结合有加强部 11 , 结合 部 120固定结合于壳体 3的上表面。
优选的 , 笫一金属层 122a为矩形环状结构, 位于振膜本体部 12 球顶部边缘上靠近折环部的位置, 第一金属层 122a与音圈 2电连接; 为了形成两个与音圈 2的两条引线电连接的独立的电极,本发明在矩 形环状第一金属层 122a的两个短边上分別形成两个断开部 123 ,断开 部 123所在的位置未设置金属层 122 ,使第一金属层 122a形成两部分, 这两部分用作两个独立的电极, 如图 4所示。 此外, 第一金属层 122a的内侧还设有与环状笫一金属层 122a电 连接的第一导电端子 13a , 第一导电端子 13a的教量至少为两个, 用 于与音圈 2的两个引线 (出线端)电连接, 如图 4和图 6所示, 本实施 例对应每个电极均设有两个第一导电端子 13a , 音圈 2的引线可以与 对应电极的两个第一导电端子 13a中的任意一个电连 ·¾。振膜本体部 12靠近音圈 2—侧的基材层 121上对应第一导电瑞子 13a设置有避让 的开孔, 以方便音圈 2的引线与第一导电端子 13a通过点焊方式导电 结合。 需要说明的是, 加强部 11在点焊过程中同时可以起到补强板 的作用, 防止点焊过程中振膜 1 出现塌陷等不良现象, 因此加强部 11需要覆盖第一导电端子 13a所在的位置, 优选的, 加强部 11的材 料为环氧树脂、 PET、 PEN, 金属片、 PFJ、 PAR, FPS或 PES等。
优选的, 第二金属层 122b位于振膜本体部 1的边缘与所述壳体 3结合的位置, 以减小金属屋 122对振膜 1硬度的影响。 其中, 第二 金属层 122b为矩形环状结构 , 为了形成两个独立的电极, 在矩形的 笫二金属层 122b的两短边上设有断开部 123 ,断开部 123所在的位置 未设置金属层 122 ,如图 4所示。 第二金属层 122b的两个角部设有第 二导电端子 13b,两个第二导电端子 13b分別与第二金属层 122b形成 合, 如图 1所示。 对应于第二 电端子 13b上侧和下侧的基材层 121 均设有避让第二导电端子 13b的避让结构,使第二导电端子 13b露出 于基材层 121 , 如图 5和图 6所示, 以便于实现与电连接件 4的电连 接。终端产品可以通过电连接笫二导电端子 13b或电连接件 4来控制 电声换能器内部的电信号。
优选的, 第一导电端子 13a和第二导电端子 13b表面设有电镀形 成的金属保护层, 优选的采用具有良好的) ^接和延展性的锡金属层。
优选的, 笫三金属层 122c为 ·条状结构, 位于矩形的第一金属层 122a和矩形的第二金属层 122b的两长边上, 分別将笫一金属层 122a 的一个电极和第二金属层 122b的相应的一个电极电连接, 并将第一 金属层 122a的另一个电极和笫二金属层 122b的相应的另一个电极电 连接, 这种第三金属层 122c位于矩形长边上的结构可以增加矩形振 膜 1 长边的强度, 有利于提高振膜 1 的声学性能。 此外, 第三金属层 122c为并列设置的三个条状的结构, 可以增强电连接的稳定性。
这种在振膜本体部 12内部设置导电的金属层 122 ,并且振膜本体 部 12上设有与音圈 2导电结合的第一导电端子 13a,以及与终端产品 或电连接件 4导电结合的笫二导电端子 13b的结构,可以使音圈 2的 引线不需要顺出很长的线程即可实现电连接,避免了音圈 2的引线在 工作过程中发生断线等故障, 提高了产品的稳定性; 而且这种结构可 以直接通过拫膜 1上的导电端子实现电声换能器内部和外部电信号 的连接, 筒化了产品的制作工艺, 提高了产品的生产效率。
在本发明的上述教导下,本领域技术人员可以在上述实施例的基 础上进行其他的改进和变形 , 而这些改进和变形, 都落在本发明的保 护范围内,本领域技术人员应该明白, 上述的具 4本描述只是更好的解 释本发明的目的, 本发明的保护范围由权利要求及其等同物限定:

Claims

权 利 要 求 书
1. 一种电声换能器, 包括振膜本体部以及结合于所述振膜本体 部一侧的音圈, 其特征在于, 所述振 ft本体部包括非导电的基材层和 导电的金属层, 所述基材层包括至少两层, 所述金属层设置于任意两 层相邻的所述基材层之间;
所述金属层形成相互独立的两个电极部分,每个电极部分上设有 与所述音圈导电连接的第一导电端子 ,所述金属层与所述音圈之间的 各基材层上设有去料形成的避让所迷第一导电端子的开孔。
2. 根据权利要求 1所述的电声换能器, 其特征在于,所述振膜本 体部的中心位置结合有刚性的加强层,所迷加强层结合于所述振膜本 体部远离所述音圈的一側,并且所述加强层覆盖所述第一导电端子所 在的区域。
3. 根据权利要求 1所述的电声换能器, 其特征在于,每个所述电 极部分上还设有露出于各所述基材层的笫二导电端子,所述第二导电 端子位于所述振膜本体部的边缘位置
4. 根据权利要求 3所述的电声换能器, 其特征在于,所述笫一导 电端子和所述第二导电端子的表面电镀有金属保护层。
5. 根据权利要求 3所述的电声换能器 , 其特征在于 ,所述电声换 能器还包括收容固定所述振膜本体部的壳体,所述壳体上对应于所述 第二导电端子的位置设有与所述第二导电端子导电结合的电连接件
6 根据权利要求 3所述的电声换能器, 其特征在于, 各所述基材 层的材料为 PERK、 PEN、 PET, PAR, PET, PPS、 PES中的一种或 多种。
7. 根据权利要求 4所述的电声换能器,其特征在于,所述金属层 为铜箔, 或者电镀形成的铜金属层;
所述金属保护层为锡金属层。
8. 根据权利要求 1至 7任一权利要求所述的电声换能器,其特征 在于,
所述振膜本体部包括位于中心位置的球顶部,位于边缘位置的折 环部, 以及位于所述折环部边缘的用于与所述壳体结合的结合部; 所述金属层包括分布于所述球顶部上的笫一金属层,分布于所述 结合部上的笫二金属层,以及分布于所述折环部上的连接所述第一金 属层和所述第二金属层的笫三金属层;
其中, 所述笫一金属层和所述第二金属层上均设有独立的两部 分, 两部分所述第一金属层、 所述笫二金属层和所述第三金属层形成 两个独立的电极
9. 根据权利要求 8所述的电声换能器, 其特征在于, 所述笫一金属层和所述第二金属层为环状结构,并且在所述第一 金属层和所述第二金属层上均设有使所迷第一金属层和所述笫二金 属层形成两部分的断开部;
所述第三金属层为条状结构。
10. 根据权利要求 9所述的电声换能器, 其特征在于, 所迷振膜 为矩形结构, 所述第三金属层分布于所述矩形振膜的两个长轴边上。
11. ·根据权利要求 10所述的电声换能器,其特征在于,所述笫三 金属层为并列设置的三个条状结构。
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