WO2018145416A1 - 一种发声装置中的振动***及发声装置 - Google Patents

一种发声装置中的振动***及发声装置 Download PDF

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Publication number
WO2018145416A1
WO2018145416A1 PCT/CN2017/094752 CN2017094752W WO2018145416A1 WO 2018145416 A1 WO2018145416 A1 WO 2018145416A1 CN 2017094752 W CN2017094752 W CN 2017094752W WO 2018145416 A1 WO2018145416 A1 WO 2018145416A1
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Prior art keywords
voice coil
fpcb board
vibration system
fpcb
vibration
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PCT/CN2017/094752
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English (en)
French (fr)
Inventor
王琪忠
吴银娇
刘光磊
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歌尔股份有限公司
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Publication of WO2018145416A1 publication Critical patent/WO2018145416A1/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
    • H04R9/02—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 invention relates to the field of electroacoustic conversion, and more particularly to a vibration system in a sounding device; the present invention also relates to a sounding device.
  • a speaker is an important acoustic component in an electronic device that is a transducer that converts an electrical signal into an acoustic signal.
  • An existing speaker module includes a housing, and a magnetic circuit system disposed within the housing and a vibration system including a diaphragm and a voice coil disposed under the diaphragm. The voice coil drives the diaphragm to make sounds under the vibration of the magnetic circuit system.
  • the voice coil in the vibration system is wound by an enameled wire.
  • the two free ends of the enameled wire are generally disposed at both ends of the voice coil.
  • the two ends of the enameled wire extend from the voice coil and are welded.
  • the pads of the housing are connected to an external circuit.
  • a vibration system in a sounding device comprising a diaphragm assembly and a voice coil connected to a lower end of the diaphragm assembly; and an FPCB board bonded to the lower end surface of the voice coil by glue Positioning adjacent to the voice coil lead, the surface of the FPCB board for bonding with the lower end surface of the voice coil has a textured surface; the two leads of the voice coil are connected to the circuit of the FPCB board;
  • a centering segment at the lower end of the voice coil is also included. Also included is a centering segment at the lower end of the voice coil, the inner side of which is attached to the lower end of the FPCB board.
  • the FPCB board is provided with a ring that matches the shape of the lower end surface of the voice coil. shape.
  • the FPCB board is provided with two wires respectively bonded to the two lead positions on the lower end surface of the voice coil.
  • the voice coil has a rectangular shape, and two lead wires of the voice coil are located on a short side of the voice coil.
  • the FPCB board includes an FPCB board body for bonding to one side of the lower end surface of the voice coil, and protrusions substantially perpendicular to the FPCB board body are further disposed at both ends of the FPCB board body.
  • a sounding device comprising a housing and a magnetic circuit system located in the housing, the vibration system described above.
  • the vibration system of the invention can connect the lead wires of the voice coil with the external circuit through the FPCB board, thereby avoiding the vibration cracking problem caused by the limitation of the material of the voice coil lead; the texture of the concave and convex on the FPCB board is also ensured.
  • the stability of the connection structure By setting the centering piece at the lower end of the voice coil, the polarization of the voice coil can be greatly reduced, and the vibration effect of the vibration system can be improved.
  • FIG. 1 is a schematic view showing the structure of a vibration system of the present invention.
  • FIG. 2 is a schematic structural view of an FPCB board of the present invention.
  • the present invention provides a vibration system in a sounding device comprising a diaphragm assembly and a voice coil 3 coupled to the lower end of the diaphragm assembly.
  • the diaphragm assembly of the present invention may be only a diaphragm 1, which includes a vibrating portion at the center, a connecting portion at the edge for connection, and a loop portion between the vibrating portion and the connecting portion.
  • the structure of such a diaphragm is well known to those skilled in the art.
  • the voice coil 3 is connected to the position of the vibrating portion of the diaphragm 1.
  • the diaphragm assembly may further include a dome 2, which is connected to the vibrating portion of the diaphragm, for example, may be bonded to the lower end of the vibrating portion by glue.
  • the voice coil 3 is connected to the dome 2. It is also possible that a through hole is provided in the middle of the diaphragm 1, the dome 2 covers the through hole position of the diaphragm 1, and the voice coil 3 is attached to the dome 2.
  • the voice coil 3 can be wound by layers of enameled wires, and the whole can be square or rectangular.
  • the two leads of the voice coil 3 are respectively located at opposite ends of the voice coil.
  • the voice coil 3 selects a rectangular structure, its two leads may be respectively located on the two short sides or the long sides of the voice coil.
  • the structure of such a voice coil is well known to those skilled in the art and will not be specifically described herein.
  • the vibration system of the present invention further includes an FPCB board 4 connected to a position on the lower end surface of the voice coil 3 adjacent to the voice coil lead, and the FPCB board 4 can be attached to the lower end surface of the voice coil 3 by bonding.
  • the FPCB board 4 is provided with a ring shape that matches the shape of the lower end surface of the voice coil 3.
  • the cross section of the voice coil 3 is rectangular, and the FPCB board 4 has a rectangular shape matched thereto.
  • the FPCB board 4 is bonded to the entire annular lower end surface of the voice coil 3.
  • the FPCB board 4 may be provided with two, and the two FPCB boards 4 are respectively bonded to the two lead positions of the lower end surface of the voice coil 3, so that one lead can correspond to one. FPCB board 4.
  • the FPCB board 4 of the present invention may include an FPCB board body 40 for bonding to one side of the lower end surface of the voice coil 3, on the FPCB board Both ends of the body 40 are also provided with a protrusion 41 which is approximately perpendicular to the FPCB board body 40, with reference to FIG.
  • the FPCB board body 40 may be bonded to the short side of the voice coil 3, and the protruding portions 41 at both ends of the FPCB board body 40 are bonded to a part of the long side of the voice coil 3, thereby improving the FPCB board. 4 Bonding stability with voice coil 3.
  • the lead of the voice coil needs to be connected to the circuit of the FPCB board 4, so that the FPCB board 4 can function as a transfer and a hinge, thereby connecting the voice coil and the external circuit through the subsequent connecting line, thereby avoiding the conventional Problems such as breakage caused by the lead connection structure.
  • the vibrating system of the present invention further includes a centering piece 5 at the lower end of the voice coil 3, and the inner side of the centering piece 5 can be attached to the lower end of the FPCB board 4, for example, by bonding, and the outer side is used for sounding
  • the housings of the device are connected together such that the polarization of the voice coil 3 can be greatly reduced by the centering support 5, and the vibration effect of the vibration system is improved.
  • the width of the bonding surface of the voice coil 3 is often narrow, depending on the wire diameter of the enamel wire and the number of layers of the voice coil. If the wire diameter is 0.1 mm and the number of layers is 4, the bonding surface width of the voice coil 3 is only 0.4 mm, in order to improve the adhesion between the FPCB board 4 and the voice coil 3, the surface on the FPCB board 4 for bonding to the lower end surface of the voice coil 3 has a textured texture, see FIG.
  • the FPCB board 4 may be subjected to embossing to form aligned rectangular grooves on its surface. When bonding, more thermosetting glue is stored in the rectangular groove, thereby increasing the adhesion between the two and improving the risk of both falling off.
  • the present invention also provides a sounding device comprising a housing and a vibration system, a magnetic circuit system located in the housing.
  • the magnetic circuit system includes a magnetic gap composed of a magnet and a washer located above the magnet.

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

Abstract

本发明涉及一种发声装置中的振动***及发声装置，包括振膜组件以及连接在振膜组件下端的音圈；还包括FPCB板，所述FPCB板通过胶粘接在音圈下端面上邻近音圈引线的位置，所述FPCB板上用于与音圈下端面粘接的表面具有凹凸的纹理；音圈的两根引线连接到FPCB板的电路中；还包括位于音圈下端的定心支片，所述定心支片的内侧连接在FPCB板的下端。本发明的振动***，可以通过FPCB板将音圈的引线与外部电路连接在一起，这就避免了因音圈引线材质的限制而导致的振动断裂问题；在FPCB板上设置凹凸的纹理也保证了连接结构的稳定性。通过设置在音圈下端的定心支片，可以大幅度降低音圈的偏振，提高振动***的振动效果。

Description

一种发声装置中的振动***及发声装置 技术领域
本发明涉及电声转换领域，更具体地，本发明涉及一种发声装置中的振动***；本发明还涉及一种发声装置。
背景技术
扬声器是电子设备中的重要声学部件，其为一种把电信号转变为声信号的换能器件。现有的扬声器模组，包括外壳，以及设置在外壳内的磁路***以及振动***，所述振动***包括振膜以及设置在振膜下方的音圈。音圈在磁路***的振动作用下驱动振膜进行发声。
振动***中的音圈由漆包线缠绕而成，漆包线的两个自由端一般设置在音圈的两端，在与外部电路进行连接的时候，该漆包线的两端从音圈延伸出去，并焊接在壳体的焊盘上，以与外部电路连接在一起。上述结构的音圈在振动的时候，漆包线的两端也会随着音圈进行振动，但是由于漆包线的材质特性，其可能会发生断裂，造成发声装置的失效。
发明内容
本发明的一个目的是提供了一种发声装置中的振动***。
根据本发明的一个方面，提供一种发声装置中的振动***，包括振膜组件以及连接在振膜组件下端的音圈；还包括FPCB板，所述FPCB板通过胶粘接在音圈下端面上邻近音圈引线的位置，所述FPCB板上用于与音圈下端面粘接的表面具有凹凸的纹理；所述音圈的两根引线连接到FPCB板的电路中；
还包括位于音圈下端的定心支片，所述定心支片的内侧连接在FPCB板的下端。
可选地，所述FPCB板设置有一个，其呈与音圈下端面形状匹配的环 形。
可选地，所述FPCB板设置有两个，分别粘接在音圈下端面的两个引线位置。
可选地，所述音圈呈长方形，所述音圈的两个引线位于音圈的短边上。
可选地，所述FPCB板包括用于与音圈下端面其中一侧粘接的FPCB板本体，在所述FPCB板本体的两端还设置有与FPCB板本体近似垂直的突出部。
根据本发明的另一方面，还提供了一种发声装置，包括壳体以及位于壳体中的磁路***、上述的振动***。
本发明的振动***，可以通过FPCB板将音圈的引线与外部电路连接在一起，这就避免了因音圈引线材质的限制而导致的振动断裂问题；在FPCB板上设置凹凸的纹理也保证了连接结构的稳定性。通过设置在音圈下端的定心支片，可以大幅度降低音圈的偏振，提高振动***的振动效果。
通过以下参照附图对本发明的示例性实施例的详细描述，本发明的其它特征及其优点将会变得清楚。
附图说明
被结合在说明书中并构成说明书的一部分的附图示出了本发明的实施例，并且连同其说明一起用于解释本发明的原理。
图1是本发明振动***的结构示意图。
图2是本发明FPCB板的结构示意图。
具体实施方式
现在将参照附图来详细描述本发明的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本发明及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨 论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
参考图1，本发明提供了一种发声装置中的振动***，包括振膜组件以及连接在振膜组件下端的音圈3。本发明的振膜组件可以仅为一振膜1，该振膜1包括位于中部的振动部，位于边缘用于连接的连接部，以及位于振动部与连接部之间的折环部。这种振膜的结构属于本领域技术人员的公知常识。所述音圈3连接在振膜1的振动部位置上。
当然，对于本领域的技术人员而言，所述振膜组件还可以包括球顶2，所述球顶2连接在振膜的振动部上，例如可以通过胶粘接在振动部的下端，所述音圈3连接在球顶2上。还可以是，在所述振膜1的中部设置有通孔，所述球顶2覆盖在振膜1的通孔位置，所述音圈3连接在球顶2上。
音圈3可以由漆包线逐层缠绕而成，其整体可以呈正方形或者长方形等。音圈3的两根引线分别位于音圈相对的两端。例如当音圈3选择长方形结构时，其两根引线可以分别位于音圈的两个短边上或者长边上。这种音圈的结构属于本领域技术人员的公知常识，在此不再具体说明。
本发明的振动***，还包括FPCB板4，所述FPCB板4连接在音圈3下端面上邻近音圈引线的位置，FPCB板4可以通过粘接的方式连接在音圈3的下端面上。在本发明一个具体的实施方式中，所述FPCB板4设置有一个，其呈与音圈3下端面形状匹配的环形。例如音圈3的截面呈长方形，则所述FPCB板4呈与其匹配的长方形。FPCB板4与音圈3的整个环状下端面粘接在一起。
在本发明另一个具体的实施方式中，所述FPCB板4可以设置有两个，该两个FPCB板4分别粘接在音圈3下端面的两个引线位置，使得一根引线可以对应一个FPCB板4。
为了可以提高FPCB板4与音圈3的粘结面积，本发明的所述FPCB板4可以包括用于与音圈3下端面的其中一侧粘接的FPCB板本体40，在所述FPCB板本体40的两端还设置有与FPCB板本体40近似垂直的突出部41，参考图2。在粘结的时候，所述FPCB板本体40可以粘接在音圈3的短边上，FPCB板本体40两端的突出部41粘结在音圈3的部分长边，由此提高了FPCB板4与音圈3的粘结稳定性。
音圈的引线需要连接到FPCB板4的电路中，使得FPCB板4可以起到转接、枢纽的作用，由此可通过后续的连接线将音圈与外部电路连接在一起，从而可以避免传统引线连接结构所引起的断裂等问题。
本发明的振动***，还包括位于音圈3下端的定心支片5，所述定心支片5的内侧例如可以通过粘接的方式连接在FPCB板4的下端，其外侧用于与发声装置的壳体连接在一起，使得通过该定心支片5可以大幅度降低音圈3的偏振，提高振动***的振动效果。
音圈3粘接面的宽度往往很窄，这取决于漆包线的线径、音圈的层数，假设线径为0.1mm、层数为4层时，音圈3的粘接面宽度仅为0.4mm，为了提高FPCB板4与音圈3之间的粘接力，所述FPCB板4上用于与音圈3下端面粘接的表面具有凹凸的纹理，参考图2。例如所述FPCB板4可以经过轧花处理，在其表面形成排列的矩形槽。在粘结的时候，矩形槽内会存储更多的热固胶水，由此可以增大两者之间的粘接力，改善两者脱落的风险。
本发明还提供了一种发声装置，其包括壳体以及位于壳体中的振动***、磁路***。磁路***包括由磁铁构成的磁间隙以及位于磁铁上方的华司等，这种磁路***属于本领域技术人员的公知常识，在此不再具体说明。
虽然已经通过例子对本发明的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上例子仅是为了进行说明，而不是为了限制本发明的范围。本领域的技术人员应该理解，可在不脱离本发明的范围和精神的情况下，对以上实施例进行修改。本发明的范围由所附权利要求来限定。

Claims (6)

  1. 一种发声装置中的振动***，其特征在于：包括振膜组件以及连接在振膜组件下端的音圈(3)；还包括FPCB板(4)，所述FPCB板(4)通过胶粘接在音圈(3)下端面上邻近音圈引线的位置，所述FPCB板(4)上用于与音圈(3)下端面粘接的表面具有凹凸的纹理；所述音圈(3)的两根引线连接到FPCB板(4)的电路中；
    还包括位于音圈(3)下端的定心支片(5)，所述定心支片(5)的内侧连接在FPCB板(4)的下端。
  2. 根据权利要求1所述的振动***，其特征在于：所述FPCB板(4)设置有一个，其呈与音圈(3)下端面形状匹配的环形。
  3. 根据权利要求1所述的振动***，其特征在于：所述FPCB板(4)设置有两个，分别粘接在音圈(3)下端面的两个引线位置。
  4. 根据权利要求1至3中任一项所述的振动***，其特征在于：所述音圈(3)呈长方形，所述音圈(3)的两个引线位于音圈(3)的短边上。
  5. 根据权利要求1至4中任一项所述的振动***，其特征在于：所述FPCB板(4)包括用于与音圈(3)下端面其中一侧粘接的FPCB板本体(40)，在所述FPCB板本体(40)的两端还设置有与FPCB板本体(40)近似垂直的突出部(41)。
  6. 一种发声装置，其特征在于：包括壳体以及位于壳体中的磁路***、如权利要求1至5任一项所述的振动***。
PCT/CN2017/094752 2017-02-13 2017-07-27 一种发声装置中的振动***及发声装置 WO2018145416A1 (zh)

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CN109362008B (zh) * 2018-10-23 2021-05-18 歌尔股份有限公司 一种扬声器
CN111510831B (zh) * 2020-04-16 2021-05-28 歌尔股份有限公司 发声装置
CN112637745B (zh) * 2020-12-30 2022-09-20 歌尔股份有限公司 定心支片、定心支片的加工工艺、扬声器及电子终端

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