WO2021098445A1 - 音圈、扬声器及音圈的制作方法 - Google Patents

音圈、扬声器及音圈的制作方法 Download PDF

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Publication number
WO2021098445A1
WO2021098445A1 PCT/CN2020/123468 CN2020123468W WO2021098445A1 WO 2021098445 A1 WO2021098445 A1 WO 2021098445A1 CN 2020123468 W CN2020123468 W CN 2020123468W WO 2021098445 A1 WO2021098445 A1 WO 2021098445A1
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Prior art keywords
voice coil
wire
winding
line
enameled wire
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English (en)
French (fr)
Inventor
孙志军
牛家鹏
牟宗君
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Goertek Inc
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Goertek Inc
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/041—Voice coil arrangements comprising more than one voice coil unit on the same bobbin

Definitions

  • the invention relates to the technical field of loudspeaker products, and more specifically, to a voice coil, a loudspeaker and a manufacturing method of the voice coil.
  • a speaker is a device that can convert electrical signals into sound signals, and is widely used in electronic devices such as mobile phones and tablet computers. It is mainly composed of magnets, diaphragms, voice coils and other components. Among them, the voice coil is the vibration source of the speaker vibration system, which has a very important influence on the sensitivity and frequency response of the speaker.
  • the voice coil is usually surrounded by a stack of enameled wires, and one end is connected to the diaphragm.
  • a changing current will flow through the enameled wire of the voice coil, and the voice coil will move in a piston-like manner under the action of the electromagnetic field, thereby driving The diaphragm reciprocates, and then pushes the surrounding air movement to emit sound waves.
  • the existing voice coil is generally wound from the inside to the outside. After the winding is completed, the starting line outlet position 5'must be drawn from above or below the voice coil body 7', so that there is one more starting line in the longitudinal height direction.
  • the height of the wire diameter makes the total height of the voice coil higher, as shown in Figures 3 and 4.
  • the total height of micro speakers for many electronic products is about 2-4mm.
  • the voice coil, magnetic circuit, diaphragm components, glue layer, etc. are closely arranged in a tiny space.
  • the vibration space of the voice coil is about 0.4-0.8mm.
  • the height of an enameled wire diameter of the speaker is 0.05mm-0.2mm, which occupies 10-20% of the vibration space, which reduces the vibration space, prone to rubbing and causing poor acoustic performance.
  • the present invention provides a voice coil, a speaker, and a method for manufacturing a voice coil, which can solve the problem of the initial wire exiting in the existing winding method, reduce the occupation of the vibration space by the winding, and improve the speaker's performance. Acoustic effect.
  • the present invention provides a voice coil.
  • the voice coil includes a voice coil body made of enameled wire, a start wire end and a terminal wire end.
  • the voice coil body is provided with a start wire outlet position and a final wire outlet position.
  • the starting wire end is drawn from the starting wire outlet position
  • the ending wire end is drawn from the ending wire outlet position
  • the starting wire outlet position and the ending wire outlet position are located at any position in the middle of the voice coil body
  • the height of the body is formed as the height of the voice coil.
  • the starting position and the ending position of the enameled wire are located on the same plane.
  • the starting and ending positions of the enameled wire are both located at half the height of the voice coil.
  • the starting position and the ending position of the enameled wire are located on different planes.
  • the voice coil is provided in at least two layers, and the number of turns of the voice coils of two adjacent layers is different.
  • the number of turns of two adjacent layers of voice coils differs by one turn.
  • the voice coil is wound by self-adhesive direct welding enameled wire, and the enameled wire is copper enameled wire, copper alloy enameled wire or copper clad aluminum enameled wire.
  • the present invention also provides a loudspeaker including a magnetic circuit system and a vibration system.
  • the vibration system includes a diaphragm and the aforementioned voice coil.
  • the voice coil is fixed on one side of the diaphragm, and the start line end and the end line
  • the terminal is led out from any position in the middle of the voice coil body and connected with the peripheral circuit to feed in electrical signals.
  • the vibration system is provided with at least two sets of voice coils.
  • the present invention also provides a method for manufacturing a voice coil, wherein the voice coil is wound by enameled wire, and the enameled wire is provided with a start end and an end end, and the following steps are specifically adopted for winding:
  • the start and end ends are stacked between the start position and the end position of the winding to form the voice coil body, the start end is finally led out from the start line outlet position; the end line ends finally from the end line outlet position Leading out, the start line outlet position and the end line outlet position are located at any positions in the middle of the voice coil body, and the height of the voice coil body is formed as the voice coil height, thereby completing the production of the voice coil.
  • the technical solution of the present invention is to set the start line outlet position and the end line outlet position at the middle position of the voice coil height, which effectively avoids the problem of the voice coil having an extra layer of wire diameter when the two ends of the start line exit in the existing winding method.
  • the problem is to reduce the occupation of the vibration space by the winding, prevent the voice coil and the frame and other components from rubbing, the stability and durability of the voice coil are improved, and the acoustic effect is more excellent.
  • the middle wire outlet method is more than the two ends, the voice coil coil is wound with more turns, the overall wire length of the voice coil increases, and the thickness of the magnet is eliminated due to the problem of the space occupied by the initial wire outlet.
  • Figure 1 is a schematic flow chart of a voice coil manufacturing method according to an embodiment of the application
  • Figure 2 is a schematic diagram of the application voice coil winding method
  • Fig. 3 is a cross-sectional view of a winding structure of an existing voice coil
  • Figure 4 is a schematic diagram of the existing voice coil winding method
  • the present invention provides a voice coil, a loudspeaker, and a manufacturing method of the voice coil, as shown in Figures 1 and 2.
  • the voice coil includes a voice coil body 7, a starting wire end 6 and a terminal wire end 4 made of enameled wire.
  • the voice coil body 7 is provided with a starting wire outlet position 5 and a final wire outlet position 3.
  • the start line end 6 is led out from the start line exit position 5, the end line end 4 is led out from the end line exit position 3, the start line exit position 5 and the end line exit position 3 are located anywhere in the middle of the voice coil body 7
  • the height of the voice coil body 7 is formed as the height of the voice coil.
  • the start line exit position 5 and the end line exit position 3 of the enameled wire are located on the same plane, and the wires can be drawn out in parallel, or they can be drawn out separately from different positions on the same plane.
  • the starting position 5 and the ending position 3 of the enameled wire are both located at half the height of the voice coil.
  • start wire outlet position 5 and the end wire outlet position 3 of the enameled wire are located on different planes, and the respective outlet positions can be reasonably arranged according to the internal structure of the speaker.
  • the voice coil is provided with at least two layers to ensure that the enameled wire can be drawn from the middle of the height of the voice coil.
  • the number of turns of the two adjacent layers of voice coils is different, and the two adjacent layers of voice coils can be arranged in a hollow arrangement; The number of turns can be alternately set in a way that the odd-numbered layers and even-numbered layers are one turn apart, or it can gradually decrease from the inside to the outside.
  • the voice coil is wound by self-adhesive direct welding enameled wire, and the enameled wire is copper enameled wire, copper alloy enameled wire or copper clad aluminum enameled wire.
  • the present invention provides a loudspeaker including a magnetic circuit system and a vibration system.
  • the vibration system includes a diaphragm and the aforementioned voice coil.
  • the voice coil is fixed on one side of the diaphragm.
  • the terminal 4 is drawn from any position in the middle of the voice coil body and connected to the peripheral circuit to feed in electrical signals.
  • the vibration system is provided with at least two sets of voice coils.
  • the present invention also provides a method for manufacturing a voice coil.
  • the voice coil is wound by enameled wire.
  • the enameled wire is provided with a start end 6 and an end end 4, and the following steps are specifically adopted for winding:
  • the starting wire end 6 is wound from the winding start position 1 until the first layer of voice coil is completed.
  • the winding end position of the first layer of voice coil is recorded as the winding end position 2;
  • the start wire end 6 and the end wire end 4 are each reciprocally stacked between the winding start position 1 and the winding end position 2 to form the voice coil body 7, and the start wire end is finally led out from the start wire outlet position 5; the end wire end Finally, it is led out from the end line outlet position 3.
  • the start line outlet position 5 and the end line outlet position 3 are located at any position in the middle of the voice coil body 7.
  • the height of the voice coil body 7 is formed as the height of the voice coil, thereby completing the voice The making of the circle.
  • the start line can be drawn from the middle position of the voice coil height; the start line end 6 and the end line end 4 are in the winding start position 1 and the end line
  • the outlet position 2 is stacked reciprocally, and the two lines can be freely selected to intersect or disjoint; and the outlet position can be arbitrarily selected from the middle part, so that the voice coil can flexibly match the arrangement of other components inside the speaker, and the structure layout is more reasonable .
  • the above technical solution sets the starting wire outlet position 6 and the ending wire outlet position 4 at the middle position of the voice coil height, which effectively avoids the existing winding method of the original wire winding at both ends of the wire leading to the voice coil with an extra layer of wire diameter height.
  • the problem is to reduce the occupation of the vibration space by the winding, prevent the voice coil and the frame and other components from rubbing, the stability and durability of the voice coil are improved, and the acoustic effect is more excellent.
  • the middle wire outlet method is more than the two ends, the voice coil coil is wound with more turns, the overall wire length of the voice coil increases, and the thickness of the magnet is eliminated due to the problem of the space occupied by the initial wire outlet. , It can be further thickened, and the interaction between the coil and the magnet is enhanced, so that the electromechanical coupling factor BL(x) of the speaker is improved.
  • the increase of the voice coil wire length and the increase of the thickness of the magnet will increase the overall weight of the speaker. The frequency F0 is reduced, and the low frequency performance of the speaker is improved.
  • the voice coil body is formed by alternately arranging 7 turns and 6 turns from the inside to the outside, and the middle outlet method is adopted, which can be used from the inside to the outside.
  • the middle outlet method is adopted, which can be used from the inside to the outside.

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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

本发明涉及一种音圈、扬声器及音圈的制作方法。音圈包括由漆包线绕制而成的音圈本体、始线端和末线端，音圈本体上设置有始线出线位置和末线出线位置，所述始线端从始线出线位置引出，所述末线端从末线出线位置引出，所述始线出线位置和所述末线出线位置位于音圈本体中间任意位置，所述音圈本体的高度形成为音圈高度。本发明有效避免了现有绕线方式中始线两端出线导致音圈多出一层线径高度的问题，减少了绕线对振动空间的占用，防止音圈与盆架等零器件的碰擦，音圈的稳定性、耐久性得到提升，声学效果更为优异。

Description

音圈、扬声器及音圈的制作方法 技术领域
本发明涉及扬声器产品技术领域，更具体的，涉及一种音圈、扬声器及音圈的制作方法。
背景技术
扬声器是一种能够将电信号转化为声音信号的器件，广泛应用于手机、平板电脑等电子设备中。其主要由磁铁、振膜、音圈等部件组成。其中音圈是扬声器振动系统的振动源，其对扬声器的灵敏度和频率响应有着非常重要的影响。
音圈通常由一漆包线围设堆叠而成，且一端与振膜相连接，扬声器在工作时，会有变化的电流通过音圈的漆包线，音圈在电磁场的作用下做活塞式运动，从而带动振膜做往复运动，进而推动周围的空气运动发出声波。
现有音圈一般采用从内向外的方式绕制，绕线结束后，始线出线位置5’必须从音圈本体7’的上方或下方引出，这样在纵向高度方向上多出一根始线的线径高度，使音圈总高度变高，如附图3、4所示。而目前很多电子产品适用的微型扬声器总高度约为2-4mm，音圈、磁路、振膜组件、胶层等在微小的空间中紧密布置，音圈的振动空间为0.4-0.8mm左右，但扬声器的一根漆包线线径的高度就为0.05mm-0.2mm，占据了振动空间的10-20％，使得振动空间减小，容易发生擦碰，引发声学性能不良。
发明内容
为了解决上述技术问题，本发明提供了一种音圈、扬声器及音圈的制作方法，其能够解决现有绕线方式中始线出线的问题，减少绕线对振动空间的占用，提升扬声器的声学效果。
为了实现上述目的，本发明提供一种音圈，音圈包括由漆包线绕制而成的音圈本体、始线端和末线端，音圈本体上设置有始线出线位置和末线出线位置，所述始线端从始线出线位置引出，所述末线端从末线出线位置引出，所述始线出线位置和所述末线出线位置位于音圈本体中间任意位置，所述音圈本体的高度形成为音圈高度。
可选地，漆包线的始线出线位置和末线出线位置位于同一平面。
进一步可选地，漆包线的始线出线位置和末线出线位置均位于音圈高度一半的位置。
可选地，漆包线的始线出线位置和末线出线位置位于不同平面。
可选地，音圈至少设置为两层，相邻两层音圈的圈数不同。
进一步可选地，相邻两层音圈的圈数相差一圈。
可选地，音圈由自粘直焊漆包线绕制而成，漆包线为铜漆包线、铜合金漆包线或铜包铝漆线。
本发明还提供一种扬声器，包括磁路系统、振动系统，所述振动系统包括振膜以及前面所述的音圈， 音圈固定在振膜一侧，所述始线端和所述末线端从音圈本体中间任意位置引出与外围电路相连，以馈入电信号。
可选地，所述振动系统设置有至少两组音圈。
同时，本发明还提供了一种音圈的制作方法，所述音圈由漆包线绕制而成，漆包线设置有始线端和末线端，具体采用如下步骤进行绕制：
A.绕线开始前，始线端预先保留一部分长度，然后设定音圈的绕线起始位置；
B.始线端从绕线起始位置开始绕制，直至完成第一层音圈，第一层音圈的绕线结束位置记为绕线末端位置；
C.始线端和末线端各自在绕线起始位与绕线末端位置之间往复堆叠形成音圈本体，始线端最终从始线出线位置引出；末线端最终从末线出线位置引出，所述始线出线位置和所述末线出线位置位于音圈本体中间任意位置，所述音圈本体的高度形成为音圈高度，从而完成音圈的制作。
本发明的技术方案通过将始线出线位置和末线出线位置设置在音圈高度的中间位置，有效避免了现有绕线方式中始线两端出线导致音圈多出一层线径高度的问题，减少了绕线对振动空间的占用，防止了音圈与盆架等零器件的碰擦，音圈的稳定性、耐久性得到提升，声学效果更为优异。反之，若保持振动空间不发生变化，中间出线的方式较两端出线，音圈线圈缠绕的圈数更多，音圈整体的线长增加，同时磁铁的厚度因始线出线空间占用问题的消除，可进一步增厚，线圈与磁铁之间的相互作用增强，使得扬声器机电耦合因子BL(x)得到提升，同时音圈线长的增长，磁铁厚度的增加，扬声器整体重量也随之增加，共振频率F0降低，扬声器的低频表现得到提升。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术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示出的结构获得其他的附图。
图1为本申请一实施例的音圈制作方法流程示意图
图2为本申请音圈绕线方式示意图
图3为现有音圈的绕线结构剖视图；
图4为现有音圈绕线方式示意图
附图中，1-绕线起始位置音圈本体 2-绕线末端位置 3-末线出线位置 4-末线端 5-始线出线位置 6-始线端 7-音圈本体 3’-末线出线位置 5’-始线出线位置 7’-音圈本体。
具体实施方式
为了本发明的目的、技术方案及效果更加清楚明白，下面将参照附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
本发明提供一种音圈、扬声器以及该音圈的制作方法，如图1、2所示。
一种音圈，音圈包括由漆包线绕制而成的音圈本体7、始线端6和末线端4，音圈本体7上设置有始线出线位置5和末线出线位置3，所述始线端6从始线出线位置5引出，所述末线端4从末线出线位置3引出，所述始线出线位置5和所述末线出线位置3位于音圈本体7中间任意位置，所述音圈本体7的高度形成为音圈高度。
在一实施例中，漆包线的始线出线位置5和末线出线位置3位于同一平面，其可并线出线，也可从同一平面的不同位置分别出线。优选地，漆包线的始线出线位置5和末线出线位置3均位于音圈高度一半的位置。
在另一实施例中，漆包线的始线出线位置5和末线出线位置3位于不同平面，各自的出线位置可根据扬声器的内部结构进行合理布置。
优选实施例中，音圈至少设置两层，确保了漆包线能够从音圈高度中间位置引出，相邻两层音圈的圈数不同，相邻两层音圈可采用插空排列的方式；音圈圈数既可以以奇数层偶数层相差一圈的方式交替设置，也可由内向外逐渐递减。
在另一优选实施例中，音圈由自粘直焊漆包线绕制而成，漆包线为铜漆包线、铜合金漆包线或铜包铝漆线。
同时，本发明提供一种扬声器，包括磁路系统、振动系统，所述振动系统包括振膜以及前面所述的音圈，音圈固定在振膜一侧，所述始线端6和所述末线端4从音圈本体中间任意位置引出与外围电路相连，以馈入电信号。在一优选实施例中，所述振动系统设置有至少两组音圈。
本发明还提供一种音圈的制作方法，所述音圈由漆包线绕制而成，漆包线设置有始线端6和末线端4，具体采用如下步骤进行绕制：
A.绕线开始前，始线端6预先保留一部分长度，然后设定音圈的绕线起始位置1；
B.始线端6从绕线起始位置1开始绕制，直至完成第一层音圈，第一层音圈的绕线结束位置记为绕线末端位置2；
C.始线端6和末线端4各自在绕线起始位1与绕线末端位置2之间往复堆叠形成音圈本体7，始线端最终从始线出线位置5引出；末线端最终从末线出线位置3引出，所述始线出线位置5和所述末线出线位置3位于音圈本体7中间任意位置，所述音圈本体7的高度形成为音圈高度，从而完成音圈的制作。
在上述步骤中，通过预留一部分漆包线用作始线端缠绕，确保了始线能够从音圈高度的中部位置引出；始线端6和末线端4在绕线起始位置1与末线出线位置2之间往复堆叠，可自由选择两条线相交或不相交的方式；而且出线位置可从中间部位任意选择，使得音圈可灵活匹配扬声器内部其他部件的排布，结构布局更为合理。
上述技术方案通过将始线出线位置6和末线出线位置4设置在音圈高度的中间位置，有效避免了现有绕线方式中始线两端出线导致音圈多出一层线径高度的问题，减少了绕线对振动空间的占用，防止了音圈与盆架等零器件的碰擦，音圈的稳定性、耐久性得到提升，声学效果更为优异。
反之，若保持振动空间不发生变化，中间出线的方式较两端出线，音圈线圈缠绕的圈数更多，音圈整体的线长增加，同时磁铁的厚度因始线出线空间占用问题的消除，可进一步增厚，线圈与磁铁之间的相互作用增强，使得扬声器机电耦合因子BL(x)得到提升，同时音圈线长的增长，磁铁厚度的增加，扬声器整体重量也随之增加，共振频率F0降低，扬声器的低频表现得到提升。在更为具体的实施例中，音圈在两端出线方式下，其由内向外采用7圈、6圈交替排布的方式形成音圈本体，而采用中间出线方式，其可由内向外可采用8圈、7圈交替排布的结构，当层数为均为6层时，排布方式的差异使得BL(x)提升了14％。
以上所述仅为本发明的可选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (10)

  1. 一种音圈，其特征在于：包括由漆包线绕制而成的音圈本体、始线端和末线端，音圈本体上设置有始线出线位置和末线出线位置，所述始线端从始线出线位置引出，所述末线端从末线出线位置引出，所述始线出线位置和所述末线出线位置位于音圈本体中间任意位置，所述音圈本体的高度形成为音圈高度。
  2. 根据权利要求1所述的音圈，其特征在于：所述漆包线的始线出线位置和末线出线位置位于同一平面。
  3. 根据权利要求2所述的音圈，其特征在于：漆包线的始线出线位置和末线出线位置均位于音圈高度一半的位置。
  4. 根据权利要求1所述的音圈，其特征在于：漆包线的始线出线位置和末线出线位置位于不同平面。
  5. 根据权利要求1所述的音圈，其特征在于：音圈至少设置两层，相邻两层音圈的圈数不同。
  6. 根据权利要求5所述的音圈，其特征在于：相邻两层音圈的圈数相差一圈。
  7. 根据权利要求1所述的音圈，其特征在于：音圈由自粘直焊漆包线绕制而成，漆包线为铜漆包线、铜合金漆包线或铜包铝漆线。
  8. 一种扬声器，包括磁路系统、振动系统，所述振动系统包括振膜以及如权利要求1-7任一项所述的音圈，音圈固定在振膜一侧，所述始线端和所述末线端从音圈本体中间任意位置引出与外围电路相连，以馈入电信号。
  9. 根据权利要求8所述的扬声器，所述振动系统设置有至少两组音圈。
  10. 一种音圈的制作方法，所述音圈由漆包线绕制而成，漆包线设置有始线端和末线端，具体采用如下步骤进行绕制：
    A.绕线开始前，始线端预先保留一部分长度，然后设定音圈的绕线起始位置；
    B.始线端从绕线起始位置开始绕制，直至完成第一层音圈，第一层音圈的绕线结束位置记为绕线末端位置；
    C.始线端和末线端各自在绕线起始位与绕线末端位置之间往复堆叠形成音圈本体，始线端最终从始线出线位置引出；末线端最终从末线出线位置引出，所述始线出线位置和所述末线出线位置位于音圈本体中间任意位置，所述音圈本体的高度形成为音圈高度，从而完成音圈的制作。
PCT/CN2020/123468 2019-11-19 2020-10-24 音圈、扬声器及音圈的制作方法 Ceased WO2021098445A1 (zh)

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CN112653972B (zh) * 2020-12-25 2022-01-07 瑞声光电科技(常州)有限公司 音圈绕制方法
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