WO2016155353A1 - 音圈及设有该音圈的扬声器 - Google Patents

音圈及设有该音圈的扬声器 Download PDF

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Publication number
WO2016155353A1
WO2016155353A1 PCT/CN2015/096960 CN2015096960W WO2016155353A1 WO 2016155353 A1 WO2016155353 A1 WO 2016155353A1 CN 2015096960 W CN2015096960 W CN 2015096960W WO 2016155353 A1 WO2016155353 A1 WO 2016155353A1
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Prior art keywords
voice coil
rectangular
speaker
wire
line
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PCT/CN2015/096960
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English (en)
French (fr)
Inventor
邵明辉
杨健斌
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歌尔声学股份有限公司
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Publication of WO2016155353A1 publication Critical patent/WO2016155353A1/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 utility model relates to the technical field of electroacoustic products, in particular to a voice coil and a loudspeaker provided with the voice coil.
  • a speaker is an important acoustic component in portable electronic devices. It is an energy conversion device for converting acoustic electric signals into sound signals.
  • the speaker usually includes a vibration system and a magnetic circuit system.
  • the vibration system includes a diaphragm and a voice coil combined.
  • the voice coil is a driving component of the speaker. When the alternating audio current passes through the voice coil, the voice coil generates a change with the audio current.
  • the magnetic field this changing magnetic field interacts with or repels the magnetic field of the speaker magnetic circuit system, causing the voice coil to generate mechanical vibrations that cut the magnetic lines of force, thereby causing the diaphragm to vibrate and emit sound.
  • the existing voice coil is usually wound by a voice coil wire having a circular cross-sectional shape, and its structure is as shown in FIG. 1.
  • the voice coil 10a is wound by a voice coil wire 12a having a circular cross section. After the voice coil is wound, there is a large gap between the adjacent voice coil wires 12a, so that the voice coil cannot fully utilize the energy of the magnetic field, and the volume ratio of the voice coil is low, thereby causing poor sensitivity of the speaker, and the voice coil is Poor heat dissipation, etc.
  • the current solution is to use a voice coil with a square cross section to wrap the voice coil, and the application of a square voice coil line can improve the volume ratio of the voice coil to a certain extent and improve heat dissipation.
  • the cross section is square, the height and width of the wound voice coil are proportional to the side length of the square, which has certain drawbacks for simultaneous adjustment sensitivity and THD (Total Harmonic Distortion).
  • THD Total Harmonic Distortion
  • the first technical problem to be solved by the present invention is to provide a voice coil, the gap between adjacent voice coil lines of the voice coil is small, the volume ratio of the voice coil is high, and the heat dissipation performance is good, and at the same time
  • the height and width of the voice coil are well balanced and adjusted during design.
  • the second technical problem to be solved by the present invention is to provide a speaker having high sensitivity and easier adjustment of acoustic performance such as THD of the product.
  • the technical solution of the present invention is:
  • a voice coil which is wound by a voice coil wire
  • the voice coil wire has a rectangular cross section, and the four corners of the rectangular voice coil wire are provided with arc chamfering, and the rectangular voice coil wire
  • the ratio of the long side dimension to the short side dimension is 1.05 to 3.15, and the extending direction of the long side of the rectangular voice coil line coincides with the height direction of the voice coil.
  • the radius of the circular chamfer is less than 1/2 of the length of the short side.
  • the ratio of the long side dimension to the short side dimension of the rectangular voice coil line is 4/ ⁇ .
  • the radius of the circular chamfer is equal to 1/2 of the length of the short side.
  • the ratio of the long side dimension to the short side dimension of the rectangular voice coil line is 1.25 to 3.15.
  • the rectangular voice coil wire has a long side dimension of 0.02 mm to 1 mm.
  • the voice coil wire is an enameled wire.
  • the technical solution of the present invention is:
  • a speaker includes a vibration system including a diaphragm and a voice coil, and a voice coil system, the voice coil being the voice coil described above.
  • the voice coil of the present invention is wound by a voice coil wire having a rectangular cross section, and the four corners of the rectangular voice coil wire are provided with a circular chamfer, the long side dimension of the rectangular voice coil wire is The ratio of the short side dimension is 1.05 to 3.15, and the long side of the rectangular voice coil line extends in the same direction as the height direction of the voice coil.
  • the voice coil is made up of a rectangular voice coil, the gap between the adjacent voice coil lines is small, and the volume ratio of the voice coil is high, which can fully utilize the magnetic field strength occupied by the entire voice coil, which can greatly improve The sensitivity of the speaker; and the thermal performance of the voice coil is better.
  • the cross section of the voice coil line is rectangular, and the height and width of the voice coil can be flexibly adjusted by adjusting the ratio of the long side to the short side of the rectangular voice coil line, and the speaker THD can be flexibly improved without affecting the voice coil.
  • the width while not affecting the width of the magnetic gap, can greatly improve the acoustic performance of the speaker.
  • the voice coil line having a rectangular cross section can obtain a circular cross section having the same diameter as the long side of the rectangular voice coil line.
  • the uniform cross-sectional area of the circle line, under the same voice coil resistance, the cross section of the rectangle and the circular cross section of the voice coil line can obtain the same length, while the height of the wound voice coil is the same, the same.
  • the length of the voice coil wire and the height of the voice coil ensure that the harmonic distortion performance of the speaker will not deteriorate when changing from a voice coil line with a circular cross section to a voice coil with a rectangular cross section, so the rectangular voice coil wire is guaranteed.
  • the THD performance of the speaker has a smaller voice coil width, resulting in a smaller magnetic gap width, which in turn increases the magnetic field energy acting on the voice coil, making the speaker more sensitive.
  • the voice coil of the speaker of the present invention is the above-mentioned voice coil, the height and width of the voice coil can be more easily adjusted while ensuring the strong magnetic field strength obtained by the voice coil and improving the sensitivity, thereby ensuring the THD of the product.
  • the voice coil of the present invention and the speaker provided with the voice coil solve the technical problems of low volume ratio of the voice coil in the prior art, and the voice coil of the present invention and the voice coil volume of the speaker provided with the voice coil
  • the rate is high, the speaker sensitivity is high, the harmonic distortion is small, and the acoustic performance is good.
  • FIG. 1 is a cross-sectional structural view of a voice coil in the prior art
  • FIG. 2 is a cross-sectional structural view showing a first embodiment of the voice coil of the present invention
  • Figure 3 is a schematic cross-sectional structural view of the voice coil line of Figure 2;
  • FIG. 4 is a cross-sectional structural view showing a second embodiment of the voice coil of the present invention.
  • Figure 5 is a cross-sectional structural view of the voice coil line of Figure 4.
  • 10a voice coil, 10b, voice coil, 10c, voice coil, 12a, voice coil, 12b, voice coil, 12c, voice coil, 120, insulation, 122, metal core.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a voice coil As shown in FIG. 2 and FIG. 3, a voice coil, the voice coil 10b is wound by a voice coil wire 12b, the cross section of the voice coil wire 12b is rectangular, and the four corners of the rectangular voice coil wire are provided.
  • the arc chamfering, the radius of the arc chamfer is less than 1/2 of the short side length of the rectangle, and the arc chamfering ensures that the outer layer of the voice coil wire 12b is evenly coated, and the adjacent voice coil wires 12b are bonded. It is firm and can also increase the aesthetics of the voice coil 10b.
  • the voice coil line with a rectangular cross section can obtain the same cross-sectional area of the voice coil line with the same diameter as the long side of the rectangular voice coil line, in the same sound.
  • the voice coil line with a rectangular cross section and a circular cross section can obtain the same length, and the height of the wound voice coil is also the same.
  • the same voice coil line length and voice coil height can ensure the speaker.
  • the THD performance does not deteriorate when changing from a voice coil line with a circular cross section to a voice coil line with a rectangular cross section.
  • the short side dimension a of the rectangular voice coil line is only 0.785 times the long side dimension b (the diameter of the circular voice coil line), so the voice coil width wound by the voice coil wire having a rectangular cross section is only
  • a voice coil having a circular cross-section of the voice coil is 0.75 to 0.8 times the width of the voice coil, and a smaller magnetic gap can be obtained, thereby improving the sensitivity of the speaker. Therefore horizontal
  • the rectangular voice coil line has a smaller voice coil width while ensuring the THD performance of the speaker, thereby obtaining a smaller magnetic gap width, thereby increasing the magnetic field energy acting on the voice coil, so that the speaker has higher sensitivity. .
  • the voice coil wire 12b is an enamel wire including a strip-shaped metal core 122 on the inner side for conducting electricity, and the metal core 122 is circumferentially wrapped with an insulating layer 120.
  • the utility model adopts a voice coil line with a rectangular cross section to wrap the voice coil, which not only increases the volume ratio of the voice coil, but also improves the utilization of the magnetic field, enhances the heat dissipation effect of the voice coil, and can also adjust the voice coil line.
  • the aspect ratio flexibly adjusts the height and width of the voice coil, and it can flexibly improve the THD of the speaker without increasing the width of the voice coil or increasing the width of the magnetic gap, greatly improving the acoustic performance of the speaker.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the embodiment is basically the same as the first embodiment, and the difference is that:
  • the voice coil 10c is wound by a voice coil wire 12c having a rectangular cross section, and the radius of the circular chamfer of the voice coil wire 12c is equal to 1/2 of the length of the short side thereof, and the cross section of the voice coil wire 12c is approximately Runway shape.
  • the length of the racetrack section (the long side dimension of the rectangle) is b, and the width (the short side dimension of the rectangle) is a.
  • b/a 1.25 to 3.15 is preferable.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • a 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 and the second embodiment.
  • the speaker of the present invention adopts the voice coil described in the first embodiment and the second embodiment, it is easier to adjust the height and width of the voice coil while ensuring the strong magnetic field strength obtained by the voice coil and improving the sensitivity.
  • the THD of the product is guaranteed.

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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

一种音圈及设有该音圈的扬声器，涉及电声产品技术领域，由音圈线绕制而成，所述音圈线的横截面为长方形，所述长方形音圈线的四个角部均设有圆弧倒角，所述长方形音圈线的长边尺寸与短边尺寸的比值为1.05～3.15，且所述长方形音圈线的长边的延伸方向与所述音圈的高度方向一致。本音圈及设有该音圈的扬声器解决了现有技术中音圈容积率低等技术问题，本音圈及设有该音圈的扬声器中音圈容积率高，扬声器灵敏度高，谐波失真小，声学性能好。

Description

音圈及设有该音圈的扬声器 技术领域
本实用新型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扬声器。
背景技术
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。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。现有的音圈通常由截面形状为圆形的音圈线绕制而成，其结构如图1所示，音圈10a由截面为圆形的音圈线12a绕制而成，此种结构的音圈绕制成型后相邻音圈线12a之间均存在较大缝隙，使得音圈不能充分的利用磁场的能量，音圈的容积率低，从而导致扬声器的灵敏度差，音圈的散热能力差等。
针对上述的问题，当前已有的解决方案为使用横截面为正方形的音圈线绕制音圈，横截面为正方形的音圈线的应用在一定程度上可以提高音圈的容积率，改善散热能力等，但由于横截面为正方形，绕制的音圈的高度和宽度均与正方形的边长成正比，这对于同时调整灵敏度和THD(Total Harmonic Distortion，谐波失真)而言存在一定的弊端，如使用增加音圈高度的方法来改善Bl(x)(作用在音圈上的磁场能量)的对称性就要求截面为正方形的音圈线必须具备更大的边长，但边长增大也会同时增大音圈宽度，从而增大磁间隙，减小了产品灵敏度。
实用新型内容
针对以上缺陷，本实用新型所要解决的第一个技术问题是提供一种音圈，此音圈的相邻音圈线之间的缝隙小，音圈的容积率高，散热性能好，同时此音圈的高度和宽度在设计时可以得到很好的平衡和调整。
基于一个发明构思，本实用新型所要解决的第二个技术问题是提供一种扬声器，此扬声器灵敏度高，产品的THD等声学性能更容易调整。
为解决上述第一个技术问题，本实用新型的技术方案是：
一种音圈，由音圈线绕制而成，所述音圈线的横截面为长方形，所述长方形音圈线的四个角部均设有圆弧倒角，所述长方形音圈线的长边尺寸与短边尺寸的比值为1.05～3.15，且所述长方形音圈线的长边的延伸方向与所述音圈的高度方向一致。
作为一种实施方式，所述圆弧倒角的半径小于所述短边长度的1/2。
其中，所述长方形音圈线的长边尺寸与短边尺寸的比值是4/π。
作为另一种实施方式，所述圆弧倒角的半径等于所述短边长度的1/2。
其中，所述长方形音圈线的长边尺寸与短边尺寸的比值为1.25～3.15。
其中，所述长方形音圈线的长边尺寸为0.02mm～1mm。
其中，所述音圈线为漆包线。
为解决上述第二个技术问题，本实用新型的技术方案是：
一种扬声器，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，本实用新型的有益效果是：
由于本实用新型音圈由横截面为长方形的音圈线绕制而成,且长方形音圈线的四个角部均设有圆弧倒角，长方形音圈线的长边尺寸与 短边尺寸的比值为1.05～3.15，且长方形音圈线的长边的延伸方向与音圈的高度方向一致。由横截面为长方形的音圈线绕制成音圈后，相邻的音圈线之间缝隙小，音圈的容积率高，可充分的利用整个音圈所占用的磁场强度，可大大提高扬声器的灵敏度；且音圈的散热性能更好。同时音圈线的横截面为长方形，可以通过调整长方形音圈线的长边与短边的比例灵活的调整音圈的高度和宽度，在灵活的改善扬声器THD的同时，不会影响音圈的宽度，同时也不会影响磁间隙的宽度，可大大的提高扬声器的声学性能。
由于长方形音圈线的长边尺寸与短边尺寸的比值为4/π，此时横截面为长方形的音圈线可以获得直径与长方形音圈线长边尺寸相同的横截面为圆形的音圈线一致的横截面积，在相同的音圈阻值下，横截面为长方形与横截面为圆形的音圈线可以获得相同的长度，同时绕制的音圈的高度也相同，相同的音圈线长度及音圈高度可以保证扬声器的谐波失真性能从横截面为圆形的音圈线到横截面为长方形的音圈线转变时不会变差，因此长方形音圈线在保证了扬声器THD性能的同时具有更小的音圈宽度，从而获得更小的磁间隙宽度，进而提高作用在音圈上的磁场能量，使得扬声器具有更高的灵敏度。
由于本实用新型扬声器的音圈为上述音圈，在保证音圈获得的较强磁场强度，提高灵敏度的同时，能够更容易的对音圈的高度和宽度进行调整，保证了产品的THD。
综上所述，本实用新型音圈及设有该音圈的扬声器解决了现有技术中音圈容积率低等技术问题，本实用新型音圈及设有该音圈的扬声器中音圈容积率高，扬声器灵敏度高，谐波失真小，声学性能好。
附图说明
图1是现有技术中音圈的剖视结构示意图；
图2是本实用新型音圈实施例一的剖视结构示意图；
图3是图2中音圈线的横截面结构示意图；
图4是本实用新型音圈实施例二的剖视结构示意图；
图5是图4中音圈线的横截面结构示意图；
图中：10a、音圈，10b、音圈，10c、音圈，12a、音圈线，12b、音圈线，12c、音圈线，120、绝缘层，122、金属芯。
具体实施方式
下面结合附图和实施例，进一步阐述本实用新型。
实施例一：
如图2和图3共同所示，一种音圈，音圈10b由音圈线12b绕制而成，音圈线12b的横截面为长方形，长方形音圈线的四个角部均设有圆弧倒角，圆弧倒角的半径小于长方形的短边长度的1/2，圆弧倒角可保证音圈线12b外侧胶层涂布均匀，相邻的音圈线12b之间粘接牢固，同时还能够增加音圈10b外形的美观度。
如图2和3共同所示，长方形音圈线的长边的延伸方向与音圈10b的高度方向一致，设长方形音圈线的长度(长边尺寸)为b，宽度(短边尺寸)为a，且长方形音圈线的长边尺寸与短边尺寸的比值为1.05～3.15，即b/a＝1.05～3.15，根据扬声器的尺寸及种类不同，长方形音圈线的长边尺寸b的取值范围为0.02mm～1mm。本实施方式优选为b/a＝4/π，其中π＝3.1415926。当b/a＝4/π时，横截面为长方形的音圈线可以获得直径与长方形音圈线长边尺寸相同的横截面为圆形的音圈线一致的横截面积，在相同的音圈阻值下，横截面为长方形与横截面为圆形的音圈线可以获得相同的长度，同时绕制的音圈的高度也相同，相同的音圈线长度及音圈高度可以保证扬声器的THD性能从横截面为圆形的音圈线到横截面为长方形的音圈线转变时不会变差。且此时长方形音圈线的短边尺寸a仅是长边尺寸b(圆形音圈线的直径)的0.785倍，所以由横截面为长方形的音圈线绕制的音圈宽度仅是由横截面为圆形的音圈线绕制的音圈宽度的0.75～0.8倍，可以获得更小的磁间隙，从而改善扬声器的灵敏度。因此横 截面为长方形的音圈线在保证了扬声器THD性能的同时具有更小的音圈宽度，从而获得更小的磁间隙宽度，进而提高作用在音圈上的磁场能量，使得扬声器具有更高的灵敏度。
如图3所示，音圈线12b为漆包线，包括位于内侧用于导电的条形金属芯122，金属芯122外周包裹有绝缘层120。
本实用新型采用横截面为长方形的音圈线来绕制音圈，不仅增加了音圈的容积率，提高了磁场的利用率，增强了音圈的散热效果，同时还可以通过调整音圈线的长宽比灵活的调整音圈的高度和宽度，在灵活的改善扬声器的THD的同时，不会增加音圈的宽度，也不会增加磁间隙的宽度，大大的提高了扬声器的声学性能。
实施例二：
如图4和图5共同所示，本实施方式与实施例一基本相同，其不同之处在于：
音圈10c由横截面为长方形的音圈线12c绕制而成，音圈线12c的圆弧倒角的半径等于其短边长度的1/2，此时音圈线12c的横截面近似为跑道形。
设跑道形截面的长度(长方形的长边尺寸)为b，宽度(长方形的短边尺寸)为a，本实施方式中优选b/a＝1.25～3.15。
实施例三：
一种扬声器，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。音圈为实施例一和实施例二中描述的音圈。
由于本实用新型扬声器采用了实施例一和实施例二中描述的音圈，在保证音圈获得的较强磁场强度，提高灵敏度的同时，能够更容易的对音圈的高度和宽度进行调整，保证了产品的THD。
本实用新型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，均落在本实用新型的保护范围之内。

Claims (8)

  1. 音圈，由音圈线绕制而成，其特征在于，所述音圈线的横截面为长方形，所述长方形音圈线的四个角部均设有圆弧倒角，所述长方形音圈线的长边尺寸与短边尺寸的比值为1.05～3.15，且所述长方形音圈线的长边的延伸方向与所述音圈的高度方向一致。
  2. 根据权利要求1所述的音圈，其特征在于，所述圆弧倒角的半径小于所述短边长度的1/2。
  3. 根据权利要求2所述的音圈，其特征在于，所述长方形音圈线的长边尺寸与短边尺寸的比值是4/π。
  4. 根据权利要求1所述的音圈，其特征在于，所述圆弧倒角的半径等于所述短边长度的1/2。
  5. 根据权利要求4所述的音圈，其特征在于，所述长方形音圈线的长边尺寸与短边尺寸的比值为1.25～3.15。
  6. 根据权利要求1至5任一权利要求所述的音圈，其特征在于，所述长方形音圈线的长边尺寸为0.02mm～1mm。
  7. 根据权利要求1所述的音圈，其特征在于，所述音圈线为漆包线。
  8. 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7任一权利要求所述的音圈。
PCT/CN2015/096960 2015-03-31 2015-12-10 音圈及设有该音圈的扬声器 WO2016155353A1 (zh)

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CN109362008A (zh) * 2018-10-23 2019-02-19 歌尔股份有限公司 一种扬声器
US11290823B2 (en) 2018-04-11 2022-03-29 Dali A/S Double voice coil loudspeaker transducer unit

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CN204498361U (zh) * 2015-03-31 2015-07-22 歌尔声学股份有限公司 音圈及设有该音圈的扬声器
CN105188002A (zh) 2015-09-28 2015-12-23 歌尔声学股份有限公司 音圈线及由该音圈线绕制的音圈及设有该音圈的扬声器
WO2021120099A1 (zh) * 2019-12-19 2021-06-24 瑞声声学科技(深圳)有限公司 一种发声器件
CN113473327A (zh) * 2020-03-31 2021-10-01 歌尔股份有限公司 扬声器和电子设备
GB202204878D0 (en) * 2022-04-04 2022-05-18 Pss Belgium Nv Loudspeaker

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US11290823B2 (en) 2018-04-11 2022-03-29 Dali A/S Double voice coil loudspeaker transducer unit
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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

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