WO2017166375A1 - 音圈及设有该音圈的微型扬声器 - Google Patents

音圈及设有该音圈的微型扬声器 Download PDF

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Publication number
WO2017166375A1
WO2017166375A1 PCT/CN2016/081248 CN2016081248W WO2017166375A1 WO 2017166375 A1 WO2017166375 A1 WO 2017166375A1 CN 2016081248 W CN2016081248 W CN 2016081248W WO 2017166375 A1 WO2017166375 A1 WO 2017166375A1
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Prior art keywords
voice coil
wire
line
height difference
miniature loudspeaker
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PCT/CN2016/081248
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English (en)
French (fr)
Inventor
王琪忠
邵明辉
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歌尔声学股份有限公司
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Priority to US15/758,415 priority Critical patent/US20180270580A1/en
Publication of WO2017166375A1 publication Critical patent/WO2017166375A1/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
    • H04R9/025—Magnetic circuit
    • 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
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction
    • 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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
    • 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
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/045—Mounting

Definitions

  • the present invention relates to the field of electroacoustic products, and in particular to a voice coil and a microspeaker provided with the voice coil.
  • Micro-speakers are an important acoustic component in portable electronic devices. They are used to convert acoustic electric signals into sound signals. They are an energy conversion device. Micro-speakers usually include a vibration system and a magnetic circuit system.
  • the vibration system includes a diaphragm and a voice coil.
  • the voice coil is a driving part of the micro-speaker. When the alternating audio current passes through the voice coil, the voice coil generates the audio current.
  • the changing magnetic field which interacts with the magnetic field of the microspeaker magnetic circuit system, causes the voice coil to generate mechanical vibrations that cut the magnetic lines of force, thereby causing the diaphragm to vibrate and emit sound.
  • the voice coil is wound by a voice coil wire, and the start end and the end end of the voice coil wire are respectively taken out as a voice coil lead and electrically connected to the circuit.
  • the problem that the voice coil lead is broken may occur.
  • Smart PA Smart Power Amplifier
  • the voice coil of the micro-speaker will work under the maximum displacement, so there is an urgent need to solve the problem that the voice coil works under large displacement.
  • the technical solution to the technical problem of disconnection is to improve the reliability and service life of the micro-speaker, so that it can adapt to the development trend of the micro-speaker product.
  • the first technical problem to be solved by the present invention is to provide a voice coil which has high reliability, and the voice coil lead is not easily broken, and can be adapted to work under a large displacement.
  • the second technical problem to be solved by the present invention is to provide a micro-speaker which has high reliability, the voice coil lead is not easily broken, and has a long service life, and can adapt to the development trend of the micro-speaker product.
  • the technical solution of the present invention is:
  • a voice coil wound by a voice coil wire the number of winding layers of the voice coil wire being an even layer, the initial exit position of the voice coil wire located at the innermost layer and the outermost layer
  • the height difference is 1.5 times the diameter of the voice coil wire.
  • the height difference is 0.5 times the wire diameter of the voice coil.
  • the technical solution of the present invention is:
  • a microspeaker includes a vibration system and a magnetic circuit system, the vibration system including a diaphragm and a voice coil combined, and the voice coil is the voice coil described above.
  • the voice coil of the present invention is wound by a voice coil wire, and the position of the initial exit line of the voice coil line located at the innermost layer and the position of the end line of the voice coil line located at the outermost layer have a height difference, the height difference is smaller than 1.5 times the diameter of the voice coil. From the aspect of reliability disconnection, the smaller the height difference between the initial exit position and the end outlet position, the larger the length of the end lead, which can effectively reduce the stress on the exit line, thus greatly reducing the end.
  • the lead wire is broken due to fatigue, thereby effectively reducing the probability of the voice coil lead being broken at a large displacement, improving the reliability of the voice coil, and being able to work under a large displacement.
  • the height difference between the starting outlet position and the end outlet position is small, and it is also advantageous to strengthen the design at the outlet, which can further reduce the stress on the outlet, and further reduce the probability of the voice coil lead breaking.
  • the voice coil of the microspeaker of the present invention is the above voice coil, the reliability is high, the voice coil lead is not easily broken, and the service life is long, and the development trend of the micro speaker product can be adapted.
  • the voice coil of the present invention and the microspeaker provided with the voice coil solve the technical problem that the voice coil is easy to break under large displacement in the prior art, and the voice coil of the present invention and the miniature provided with the voice coil
  • the voice coil leads of the speaker are not easily broken, have high reliability and long service life, and can adapt to the development trend of micro speaker products.
  • Figure 1 is a schematic structural view of a voice coil of the present invention
  • Figure 2 is a schematic cross-sectional structural view taken along line A-A or line B-B of Figure 1;
  • Figure 3 is a schematic cross-sectional view showing another structure taken along line A-A or line B-B of Figure 1;
  • body, 100 with the film bonding end, 102, the beginning and end of the line end, 104, voice coil line, 12, the starting end lead, 14, the end lead, d, voice coil line diameter, a; a ', the height difference between the start line and the end line position.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a voice coil includes a body 10 wound by a voice coil, and the number of layers of the voice coil is an even layer, usually two or four.
  • One end of the voice coil body 10 is bonded to the diaphragm, and the other end is an outlet end.
  • the inner layer is wound to the outer layer, the starting end of the innermost layer leads the leading end lead 12 of the voice coil, and the end of the outermost layer leads the end lead 14 of the voice coil, which is wound by the voice coil.
  • the number of layers is an even number, so the start lead 12 and the end lead 14 are both located at the end of the body 10 of the voice coil away from the diaphragm.
  • the height difference between the initial line position of the voice coil line located at the innermost layer and the end line position of the voice coil line located at the outermost layer is required, and the height difference should be less than 1.5 times the diameter of the voice coil line. .
  • the voice coil is wound by the voice coil wire 104, the number of turns of the voice coil wire is 32 turns, the first layer (the innermost layer) is seventeen rings, and the second layer (the outermost layer) ) for fifteen laps.
  • the upper end is the bonding end with the diaphragm 100, the lower end is the starting line end 102, and the diameter of the voice coil line is defined as d, then the height difference a between the starting line and the ending line is 0.5d, that is, the voice coil located at the innermost layer.
  • the difference in height between the initial line position of the line and the end line position of the voice coil line at the outermost layer is 0.5 times the line diameter of the voice coil line 104.
  • the height difference a' between the start line and the end line in the winding mode is 1.5d, that is, the initial exit position of the voice coil line located at the innermost layer.
  • the difference in height from the position of the end line at the end of the voice coil line located at the outermost layer is 1.5 times the line diameter of the voice coil line 104.
  • the above scheme of controlling the height difference between the start line and the end line position of the voice coil within 1.5 times the voice coil line diameter can largely alleviate the defect of the end lead being broken due to fatigue, thereby effectively reducing the voice coil lead.
  • the probability of wire breakage under large displacement improves the reliability of the voice coil and can work under large displacement.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • a miniature speaker includes a vibration system and a magnetic circuit system, and the vibration system includes a diaphragm and a voice coil that are combined.
  • the voice coil is the voice coil described in the first embodiment.
  • the speaker of the present invention adopts the voice coil described in the first embodiment, the reliability is high, and the voice coil lead It is not easy to break the wire and has a long service life. It can adapt to the growing trend of vibration displacement of micro-speaker products.

Abstract

本发明公开了一种音圈及设有该音圈的微型扬声器，涉及电声产品技术领域，由音圈线绕制而成，所述音圈线的绕制层数为偶数层，位于最内层的所述音圈线的起始出线位置与位于最外层的所述音圈线的末尾出线位置之间具有高度差，所述高度差小于所述音圈线线径的1.5倍。本发明音圈及设有该音圈的微型扬声器解决了现有技术中音圈在大位移下工作易断线的技术问题，本发明音圈及设有该音圈的微型扬声器的音圈引线不易断裂，可靠性高，使用寿命长，能够适应微型扬声器产品的发展趋势。

Description

音圈及设有该音圈的微型扬声器 技术领域
本发明涉及电声产品技术领域，特别涉及一种音圈及设有该音圈的微型扬声器。
背景技术
微型扬声器是便携式电子设备中一种重要的声学部件，用于将声波电信号转换成声音信号传出，是一种能量转换器件。微型扬声器通常包括振动系统和磁路系统，振动系统包括结合在一起的振膜和音圈，其中音圈是微型扬声器的驱动部件，当交变音频电流通过音圈时，音圈产生随音频电流而变化的磁场，这一变化的磁场与微型扬声器磁路系统的磁场发生相吸或相斥作用，使得音圈产生切割磁力线的机械振动，从而带动振膜振动而发出声音。音圈是由音圈线绕制而成的，音圈线的起始端与末尾端分别引出作为音圈引线与电路电连接。随着微型扬声器的振动位移越来越大，尤其是大位移可靠性试验后会出现音圈引线断线的问题。随着大位移可靠性试验条件的加严以及Smart PA(智能功放)的推广，微型扬声器的音圈将会在最大位移下工作，从而迫切的需要一种能够解决音圈在大位移下工作易断线这一技术问题的技术方案，以提高微型扬声器的可靠性及使用寿命，使得其能够适应微型扬声器产品的发展趋势。
发明内容
针对以上缺陷，本发明所要解决的第一个技术问题是提供一种音圈，此音圈可靠性高，其音圈引线不易断裂，能够适应在大位移下工作。
基于同一个发明构思，本发明所要解决的第二个技术问题是提供一种微型扬声器，此微型扬声器可靠性高，音圈引线不易断裂，使用寿命长，能够适应微型扬声器产品的发展趋势。
为解决上述第一个技术问题，本发明的技术方案是：
一种音圈，由音圈线绕制而成，所述音圈线的绕制层数为偶数层，位于最内层的所述音圈线的起始出线位置与位于最外层的所述音圈线的末尾出线位置之间具有高度差，所述高度差小于所述音圈线线径的1.5倍。
作为一种实施方式，所述高度差为所述音圈线线径的1.5倍。
作为另一种实施方式，所述高度差为所述音圈线线径的0.5倍。
为解决上述第二个技术问题，本发明的技术方案是：
一种微型扬声器，包括振动系统和磁路系统，所述振动系统包括结合在一起的振膜和音圈，所述音圈为上述音圈。
采用了上述技术方案后，本发明的有益效果是：
由于本发明音圈由音圈线绕制而成,且位于最内层的音圈线的起始出线位置与位于最外层的音圈线的末尾出线位置之间具有高度差，高度差小于音圈线线径的1.5倍。从可靠性断线方面考虑，起始出线位置与末尾出线位置的高度差越小，末端引线的长度会越大，能够有效的减小出线处受到的应力，因此能够在很大程度上缓解末端引线因疲劳而断线的不良，从而有效的降低了音圈引线在大位移下工作发生断线的机率，提高了音圈的可靠性，能够适应在大位移下工作。同时起始出线位置与末尾出线位置的高度差小，还有利于在出线处进行加强设计，可进一步的降低出线处受到的应力，进一步减小音圈引线断裂的机率。
由于本发明微型扬声器的音圈为上述音圈，从而可靠性高，音圈引线不易断线，使用寿命长，能够适应微型扬声器产品的发展趋势。
综上所述，本发明音圈及设有该音圈的微型扬声器解决了现有技术中音圈在大位移下工作易断线的技术问题，本发明音圈及设有该音圈的微型扬声器的音圈引线不易断裂，可靠性高，使用寿命长，能够适应微型扬声器产品的发展趋势。
附图说明
图1是本发明音圈的结构示意图；
图2是图1的A-A线或B-B线处的一种剖面结构示意图；
图3是图1的A-A线或B-B线处的另一种剖面结构示意图；
图中：10、本体，100、与振膜粘接端，102、始末线出线端，104、音圈线，12、始端引线，14、末端引线，d、音圈线线径，a；a’、始线与末线位置高度差。
具体实施方式
下面结合附图和实施例，进一步阐述本发明。
实施例一：
如图1所示，一种音圈，包括由音圈线绕制而成的本体10，音圈线的绕制层数为偶数层，通常为两层或四层。音圈本体10的一端与振膜粘接，另一端为出线端。在进行音圈绕制时，由内层向外层绕制，最内层的起始端引出音圈的始端引线12，最外层的末尾引出音圈的末端引线14，由于音圈线绕制的层数为偶数层，故始端引线12与末端引线14均位于音圈的本体10远离振膜的一端。本实施方式要求位于最内层的音圈线的起始出线位置与位于最外层的音圈线的末尾出线位置之间具有高度差，且此高度差应小于音圈线线径的1.5倍。
下面以绕制两层音圈线，且音圈线圈数为三十二圈的音圈为例进一步的阐述上述技术方案：
如图2所示，音圈由音圈线104绕制而成，音圈线的绕制圈数为32圈，第一层(最内层)为十七圈，第二层(最外层)为十五圈。上端为与振膜粘接端100，下端为始末线出线端102，音圈线的线径定义为d，则始线与末线位置高度差a为0.5d，即位于最内层的音圈线的起始出线位置与位于最外层的音圈线的末尾出线位置之间的高度差为音圈线104线径的0.5倍。
如图3所示，上述音圈的另一种绕制方式，此绕制方式中始线与末线位置高度差a’为1.5d，即位于最内层的音圈线的起始出线位置与位于最外层的音圈线的末尾出线位置之间的高度差为音圈线104线径的1.5倍。
上述将音圈的始线与末线位置高度差控制在1.5倍音圈线线径之内的方案能够在很大程度上缓解末端引线因疲劳而断线的不良，从而有效的降低了音圈引线在大位移下工作发生断线的机率，提高了音圈的可靠性，能够适应在大位移下工作。
实施例二：
一种微型扬声器，包括振动系统和磁路系统，振动系统包括结合在一起的振膜和音圈。音圈为实施例一所述的音圈。
由于本发明扬声器采用了实施例一所述的音圈，从而可靠性高，音圈引线 不易断线，使用寿命长，能够适应微型扬声器产品振动位移不断增大的发展趋势。
本发明不局限于上述具体的实施方式，本领域的普通技术人员从上述构思出发，不经过创造性的劳动，所做出的种种变换，均落在本发明的保护范围之内。

Claims (4)

  1. 音圈，由音圈线绕制而成，所述音圈线的绕制层数为偶数层，其特征在于，位于最内层的所述音圈线的起始出线位置与位于最外层的所述音圈线的末尾出线位置之间具有高度差，所述高度差小于所述音圈线线径的1.5倍。
  2. 根据权利要求1所述的音圈，其特征在于，所述高度差为所述音圈线线径的1.5倍。
  3. 根据权利要求1所述的音圈，其特征在于，所述高度差为所述音圈线线径的0.5倍。
  4. 微型扬声器，包括振动系统和磁路系统，所述振动系统包括结合在一起的振膜和音圈，其特征在于，所述音圈为权利要求1至3任一权利要求所述的音圈。
PCT/CN2016/081248 2016-03-31 2016-05-06 音圈及设有该音圈的微型扬声器 WO2017166375A1 (zh)

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CN106162464A (zh) * 2016-08-23 2016-11-23 歌尔股份有限公司 一种扬声器单体
CN108566596B (zh) * 2018-04-18 2020-09-01 歌尔股份有限公司 音圈绕制方法及音圈、设有该音圈的发声器
CN109684683B (zh) * 2018-12-07 2024-03-01 苏州上声电子股份有限公司 一种扬声器振动系统的运动过程分析方法
CN213462284U (zh) * 2020-09-22 2021-06-15 瑞声科技(新加坡)有限公司 发声器件

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