WO2020140182A1 - 发声装置 - Google Patents

发声装置 Download PDF

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Publication number
WO2020140182A1
WO2020140182A1 PCT/CN2018/125963 CN2018125963W WO2020140182A1 WO 2020140182 A1 WO2020140182 A1 WO 2020140182A1 CN 2018125963 W CN2018125963 W CN 2018125963W WO 2020140182 A1 WO2020140182 A1 WO 2020140182A1
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WO
WIPO (PCT)
Prior art keywords
side wall
top wall
diaphragm
folding ring
magnetic circuit
Prior art date
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Ceased
Application number
PCT/CN2018/125963
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English (en)
French (fr)
Inventor
梁平
赵彬
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AAC Technologies Holdings Shenzhen Co Ltd
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AAC Acoustic Technologies Shenzhen Co Ltd
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Priority to PCT/CN2018/125963 priority Critical patent/WO2020140182A1/zh
Publication of WO2020140182A1 publication Critical patent/WO2020140182A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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

Definitions

  • the invention relates to the technical field of acoustic equipment, in particular to a sound-emitting device.
  • the miniature sound-emitting devices used in this type of equipment need to be more miniaturized, and the cooperation with other components around the miniature sound-emitting devices is more compact.
  • the micro-sounding devices used in them require not only miniaturization, but also high sound quality and stereo effects.
  • the diaphragm used in the sound emitting device of the prior art includes a folding ring and a dome stacked on the folding ring, the folding ring includes a protrusion with an arc-shaped cross section, the protrusion includes a top wall, and the top wall is close to the inside of the folding ring
  • the first side wall extending from the end to the magnetic circuit system and the second side wall extending from the end away from the top wall to the inside of the folding ring toward the magnetic circuit system.
  • the thickness of the first side wall and the second side wall are equal. Therefore, during the vibration of the diaphragm, amplitude asymmetry, severe rocking, and high sound quality distortion are caused.
  • the object of the present invention is to provide a sound-generating device, which aims to solve the problems of the existing technology in which the diaphragm has asymmetry in amplitude, serious sway, and high distortion in sound quality.
  • the sound-generating device of this embodiment includes a basin frame and a vibration system respectively fixed to the basin frame and a magnetic circuit system with a magnetic gap.
  • the vibration system includes a diaphragm fixed to the basin frame and inserted into the magnetic gap to drive the vibration of the diaphragm
  • the voiced voice coil, the diaphragm includes a folding ring fixed to the basin frame, the folding ring includes a protruding portion with an arc-shaped cross section, the protruding portion includes a top wall, and an end near the interior of the folding ring from the top wall faces the magnetic circuit system
  • the first side wall includes a first connection portion close to the top wall, the first side wall and the top wall are smoothly transitionally connected by the first connection portion, and the thickness of the first connection portion gradually decreases in the direction from the first side wall to the top wall
  • the second side wall includes a second connection portion close to the top wall. The second side wall and the top wall are smoothly transitionally connected through the second connection portion and the thickness gradually decreases in the direction from the second side wall to the top wall.
  • the protruding portion bends and protrudes away from the magnetic circuit system.
  • the folding ring further includes a first fixing portion extending horizontally from the protruding portion toward the inside of the folding ring and a second fixing portion extending horizontally from the protruding portion away from the folding ring, and the diaphragm further includes a dome stacked on the folding ring.
  • the folding ring is a hollow structure
  • the dome covers the hollow structure and is fixedly connected to the first fixing portion.
  • the diaphragm is a polymer material such as silica gel, rubber, polyetheretherketone, thermoplastic polyurethane elastomer rubber, silicone rubber and the like.
  • the magnetic circuit system includes a yoke, a main magnetic steel fixed to the yoke, and auxiliary magnetic steels which are respectively spaced on opposite sides of the main magnetic steel and form a magnetic gap with the main magnetic steel.
  • the secondary magnetic steel includes two, and the magnetic circuit system further includes a main pole core stacked on the main magnetic steel and an upper clamping plate embedded in the basin frame.
  • the upper clamping plate includes a ring-shaped fixing ring fixed on the basin frame and
  • the secondary pole cores are respectively extended to the two secondary magnetic steels by the fixing rings, and the secondary pole cores are stacked on the two secondary magnetic steels respectively.
  • the vibration system further includes an elastic support member.
  • the elastic support member includes a connecting head section fixedly connected to the basin frame, a supporting section fixedly connected to an end of the voice coil facing away from the diaphragm, and an elastic receiving section connecting the connecting head section and the supporting section.
  • the voice coil drives the diaphragm to vibrate under the combined action of the changing current and the magnetic circuit system, so that the air near the diaphragm vibrates and sounds.
  • the first side wall, the second side wall, and the top wall of the diaphragm are set to different thicknesses, and the thickness of the second side wall is greater than the thickness of the first side wall, and the thickness of the first side wall is greater than the thickness of the top wall .
  • This configuration can adjust the strength of the diaphragm structure, increase the upper amplitude of the diaphragm, suppress the lower amplitude, and simultaneously optimize the upper and lower amplitudes of the diaphragm to offset the asymmetry of the left and right sides, thereby improving product shake and reducing distortion of the sounding device .
  • FIG. 1 is a schematic exploded view of the sound-generating device of the present invention
  • FIG. 2 is a schematic view of the stereo structure of the sound emitting device of the present invention after assembly
  • Figure 3 is a cross-sectional view of Figure 2 along the A-A direction;
  • FIG. 4 is a cross-sectional view of FIG. 2 along the B-B direction;
  • FIG. 5 is a schematic view of the stereo structure of the diaphragm of the sound-generating device of the present invention.
  • FIG. 6 is a cross-sectional view of FIG. 5 along the C-C direction;
  • FIG. 7 is an enlarged schematic diagram at D in FIG. 6.
  • the sound generating device of this embodiment includes a basin holder 10, a magnetic circuit system 30 and a vibration system 40 respectively fixed to the basin holder 10.
  • the magnetic circuit system 30 includes a yoke 34, a main magnetic steel 31 fixed to the yoke 34, and a secondary magnetic steel 33 spaced apart on opposite sides of the main magnetic steel 31 and forming a magnetic gap 36 with the main magnetic steel 31.
  • the magnetic steel 31 and the auxiliary magnetic steel 33 serve as sources of magnetic force lines for magnetic induction.
  • the vibration system 40 is fixed to the diaphragm 41 of the basin holder 10 and the voice coil 43 inserted into the magnetic gap 36 and driving the diaphragm 41 to vibrate and sound.
  • the diaphragm 41 includes a folding ring 410 fixed to the basin frame 10.
  • the folding ring 410 includes a protruding portion 412 having an arc-shaped cross section, and the protruding portion 412 bends and protrudes away from the magnetic circuit system 30.
  • the protrusion 412 includes a top wall 4122, a first side wall 4121 extending from the end of the top wall 4122 close to the inside of the folding ring 410 toward the magnetic circuit system 40, and a side end of the top wall 4122 away from the inside of the folding ring 410 toward the magnetic circuit
  • the second side wall 4123 of the system 40 extends.
  • the thickness H1 of the second side wall 4123 is greater than the thickness H2 of the first side wall 4121
  • the thickness H2 of the first side wall 4121 is greater than the thickness H3 of the top wall 4122.
  • the structural strength of the diaphragm 41 can be adjusted, the upper amplitude of the diaphragm 41 can be raised, the lower amplitude can be suppressed, and the upper and lower amplitudes of the diaphragm 41 can be synchronously optimized to offset the asymmetry of the left and right of the highest point, which further improves product shake and reduces sound generation.
  • the distortion of the device can improve the sound quality and stereo effect of the sounding device, and improve the Q value and SPL performance of the sounding device.
  • connection between the first side wall 4121 and the top wall 4122 and the connection between the second side wall 4123 and the top wall 4122 are transitionally connected in a gradual manner.
  • the first side wall 4121 includes a first connection portion 41211 close to the top wall 4122, then the first side wall 4121 and the top wall 4122 are smoothly connected by the first connection portion 41211, and the first connection
  • the thickness L1 of the portion 41211 gradually decreases in the direction from the first side wall 4121 to the top wall 4122
  • the second side wall 4123 includes the second connection portion 41231 close to the top wall 4122, then the distance between the second side wall 4123 and the top wall 4122
  • the second connection portion 41231 is smoothly transitionally connected, and the thickness L2 of the second connection portion 41231 gradually decreases in the direction from the second side wall 4123 to the top wall 4122.
  • connection between the first side wall 4121 and the top wall 4122 and the connection between the second side wall 4123 and the top wall 4122 may also be transitionally connected in a sudden manner, or the first side wall 4121 and the top wall 4123
  • the connection between the second side wall 4123 and the top wall 4122 adopts a connection in which one side of the connection transitions in a gradual manner and the other side transitions in a sudden manner.
  • the material for producing the diaphragm 41 may be polymer materials such as PEEK (Polyetheretherketone, polyetheretherketone), TPE (Thermoplastic Elastomer, thermoplastic elastomer), TPU (Thermoplastic polyurethanes, thermoplastic polyurethane elastomer rubber), and silicone rubber.
  • PEEK Polyetheretherketone, polyetheretherketone
  • TPE Thermoplastic Elastomer, thermoplastic elastomer
  • TPU Thermoplastic polyurethanes, thermoplastic polyurethane elastomer rubber
  • silicone rubber silicone rubber
  • the folding ring 410 further includes a first fixing portion 411 extending horizontally from the protrusion 412 toward the inside of the folding ring 410 and a second fixing portion 413 extending horizontally from the protrusion 412 away from the folding ring 410.
  • the diaphragm 41 of the sound-emitting device of this embodiment further includes a dome 50, and the folding ring 410 has a hollow structure, that is, the first fixing portion 411 surrounds to form the diaphragm window 400, and the dome 50 covers the diaphragm window 400 and The first fixing portion 411 is glued and fixed. In this way, the diaphragm 41 has better structural strength in the process of sound transmission by the sound-emitting device, which ensures good reliability of the sound-emitting device.
  • the magnetic circuit system 30 of this embodiment further includes a stack The main pole core 32 provided on the main magnetic steel 31 and the upper clamping plate 35 in which the pot holder 10 is embedded.
  • the upper clamping plate 35 includes a ring-shaped fixing ring 351 fixed to the basin holder 10 and a secondary pole core 352 extending from the fixing ring 351 toward the secondary magnetic steel 33.
  • the number of the secondary magnetic steel 33 and the secondary pole core 352 are two, the two secondary magnetic steels 33 are disposed on opposite sides of the primary magnetic steel 31, and the two secondary pole cores 352 are respectively directed by the fixing ring 351 toward the two
  • the auxiliary magnets 33 extend and are stacked on the two auxiliary magnets 33 respectively.
  • the vibration system 40 further includes an elastic support member 44 which includes a connector section 441 fixedly connected to the basin holder 10, a support section 443 fixedly connected to the end of the voice coil 43 facing away from the diaphragm 41, and connecting the connector section 441 and the support The elastic receiving section 442 of section 443.
  • the elastic support 44 elastically suspends the voice coil 43 under the diaphragm 41, further improving the reliability of the entire vibration system 40.
  • the thickness of the first side wall 4121 is greater than the thickness of the first side wall 4121, and the thickness of the first side wall 4121 is greater than the thickness of the top wall 4122.
  • Such an arrangement can adjust the structural strength of the diaphragm 41, increase the upper amplitude of the diaphragm 41, suppress the lower amplitude, and simultaneously optimize the problem of the asymmetry of the upper and lower amplitudes of the diaphragm 41 shifting to the left and right, thereby improving product shake and reducing sound generation Distortion of the device.

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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

本发明提供了发声装置，包括盆架、振动系统和磁路系统，振动系统和此路系统均固定于盆架，且磁路系统具有磁间隙，振动系统包括固定于盆架的振膜、插设于磁间隙以驱动振膜振动发声的音圈，振膜包括固定于盆架的折环，折环包括一横截面为弧形结构的突出部，突出部包括顶壁、自顶壁的靠近折环内部的一端向磁路系统延伸的第一侧壁以及自顶壁的远离折环内部的一端向磁路系统延伸的第二侧壁，第二侧壁的厚度大于第一侧壁的厚度，第一侧壁的厚度大于顶壁的厚度。本发明的发声装置可以解决现有技术中振膜出现振幅不对称，振膜摇摆严重，导致音质失真度高的不良等问题。

Description

发声装置 技术领域
本发明涉及声学设备技术领域，尤其涉及一种发声装置。
 背景技术
为了适应各种音响设备与信息通信设备的小型化、多功能化发展，该类设备中所使用的微型发声器件对应需要更加趋于小型化，以及与微型发声器件周边其他元件的配合更加紧凑，特别是随着智能手机轻薄化发展需求，其中所使用的微型发声器件，不仅要求小型化，更要求高音质化和立体声效果等。
现有技术的发声器件所应用的振膜包括折环和叠设于折环的球顶，折环包括横截面为弧形结构的突出部，突出部包括顶壁、自顶壁靠近折环内部的一端向磁路系统延伸的第一侧壁以及自顶壁远离折环内部的一端向磁路系统延伸的第二侧壁。其中，第一侧壁和第二侧壁厚度相等，因此，振膜在振动的过程中，会出现振幅不对称，摇摆严重，产生音质失真度高等不良问题。
因此，有必要提供一种新的技术方案来克服上述的技术问题。
 技术问题
本发明的目的在于提供一种发声装置，旨在解决现有技术中振膜出现振幅不对称，摇摆严重，音质失真度高等不良问题。
 技术解决方案
本发明的技术方案如下：
本实施例的发声装置包括盆架以及分别固定于所述盆架的振动系统及具有磁间隙的磁路系统，振动系统包括固定于盆架的振膜、插设于磁间隙以驱动振膜振动发声的音圈，振膜包括固定于盆架的折环，折环包括一横截面为弧形结构的突出部，突出部包括顶壁、自顶壁的靠近折环内部的一端向磁路系统延伸的第一侧壁以及自顶壁的远离折环内部的一端向磁路系统延伸的第二侧壁，第二侧壁的厚度大于第一侧壁的厚度，第一侧壁的厚度大于顶壁的厚度。
优选地，第一侧壁包括靠近顶壁的第一连接部，第一侧壁与顶壁通过第一连接部平滑过渡连接且第一连接部的厚度沿第一侧壁到顶壁的方向逐渐减小，第二侧壁包括靠近顶壁的第二连接部，第二侧壁与顶壁通过第二连接部平滑过渡连接且厚度沿第二侧壁到顶壁的方向逐渐减小。
优选地，突出部向远离磁路系统方向弯曲凸出。
优选地，折环还包括自突出部向折环内部水平延伸的第一固定部以及自突出部向远离折环水平延伸的第二固定部，振膜还包括叠设于折环的球顶。
优选地，折环为中空结构，球顶覆盖中空结构并与第一固定部固定连接。
优选地，振膜为硅胶，橡胶，聚醚醚酮，热塑性聚氨酯弹性体橡胶、硅橡胶等高分子材料。
优选地，磁路系统包括磁轭、固定于磁轭的主磁钢以及分别间隔设置于主磁钢相对两侧并与主磁钢形成磁间隙的副磁钢。
优选地，副磁钢包括两个，磁路系统还包括叠设于主磁钢的主极芯以及嵌设于盆架的上夹板，上夹板包括固定于盆架的呈环状的固定环和由固定环分别向两个副磁钢延伸的副极芯，副极芯分别叠设于两个副磁钢。
优选地，振动系统还包括弹性支撑件，弹性支撑件包括固定连接于盆架的连接头段、固定连接于音圈背离振膜一端的支撑段以及连接连接头段与支撑段的弹性承接段。
 有益效果
本发明的有益效果在于：
在该发声装置运行而发生的过程中，音圈在变化电流以及磁路系统的共同作用下带动振膜振动，从而使振膜附近的空气振动而发声，在振膜振动的过程中，通过将振膜中的第一侧壁、第二侧壁和顶壁三者设置成不同的厚度，并且第二侧壁的厚度大于第一侧壁的厚度，第一侧壁的厚度大于顶壁的厚度。这样的设置能够调整振膜结构强度，抬高振膜的上振幅，抑制下振幅，并且同步优化振膜的上下振幅最高点左右偏移不对称的问题，从而改善产品摇晃，降低发声装置的失真。
 附图说明
图1为本发明的发声装置的分解结构示意图；
图2为本发明的发声装置装配完成后的立体结构示意图；
图3为图2沿A-A方向的剖视图；
图4为图2沿B-B方向的剖视图；
图5为本发明的发声装置的振膜立体结构示意图；
图6为图5沿C-C方向的剖视图；
图7为图6中D处放大示意图。
 本发明的实施方式
下面结合附图和实施方式对本发明作进一步说明。
如图1至图7所示，本实施例的发声装置包括盆架10、分别固定于盆架10的磁路系统30和振动系统40。其中，磁路系统30包括磁轭34、固定于磁轭34的主磁钢31以及分别间隔设置于主磁钢31相对两侧并与主磁钢31形成磁间隙36的副磁钢33，主磁钢31与副磁钢33作为磁感应的磁力线发生源。
振动系统40固定于盆架10的振膜41、插设于磁间隙36并驱动振膜41振动发声的音圈43。振膜41包括固定于盆架10的折环410，折环410包括一横截面为弧形结构的突出部412，该突出部412向远离磁路系统30的方向弯曲凸出。具体的，该突出部412包括顶壁4122、自顶壁4122靠近折环410内部的一端向磁路系统40延伸的第一侧壁4121以及自顶壁4122远离折环410内部的一端向磁路系统40延伸的第二侧壁4123。并且，第二侧壁4123的厚度H1大于第一侧壁4121的厚度H2，第一侧壁4121的厚度H2大于顶壁4122的厚度H3。如此设置，能够调整振膜41的结构强度，抬高振膜41的上振幅，抑制下振幅，同步优化振膜41的上下振幅最高点左右偏移不对称的问题，进一步改善产品摇晃，降低发声装置的失真，从而得以提高发声器件的音质和立体声效果，改善发声装置的Q值以及SPL等性能。
进一步的，第一侧壁4121与顶壁4122之间的连接以及第二侧壁4123与顶壁4122之间的连接均以渐变的方式进行过渡连接。在本实施例中，第一侧壁4121包括靠近顶壁4122的第一连接部41211，则第一侧壁4121与顶壁4122之间的通过第一连接部41211平滑过渡连接，并且第一连接部41211的厚度L1沿第一侧壁4121到顶壁4122的方向逐渐减小；第二侧壁4123包括靠近顶壁4122的第二连接部41231，则第二侧壁4123与顶壁4122之间的通过第二连接部41231平滑过渡连接，并且第二连接部41231的厚度L2沿第二侧壁4123到顶壁4122的方向逐渐减小。
当然，第一侧壁4121与顶壁4122之间的连接以及第二侧壁4123与顶壁4122之间的连接也可均采用突变的方式进行过渡连接，或者第一侧壁4121与顶壁4123之间的连接以及第二侧壁4123与顶壁4122之间的连接采用其中一侧连接以渐变的方式过渡而另一侧则以突变的方式进行过渡的连接方式。
用于生产振膜41的材料可以是PEEK（Polyetheretherketone，聚醚醚酮）、TPE（Thermoplastic Elastomer，热塑性弹性体）、TPU（Thermoplastic polyurethanes，热塑性聚氨酯弹性体橡胶）、硅橡胶等高分子材料。
在本实用新型的实施例中，折环410还包括自突出部412向折环410内部水平延伸的第一固定部411以及自突出部412向远离折环410水平延伸的第二固定部413。进一步的，本实施例的发声装置的振膜41还包括球顶50，且折环410为中空结构，即第一固定部411围绕形成振膜窗口400，球顶50覆盖振膜窗口400且与第一固定部411胶合固定。如此设置，使得发声装置在传播声音的过程中，振膜41具有更好的结构强度，保证了发声器件良好的可靠性。
进一步的，为了更进一步提高磁路系统30的性能，使磁路系统30的磁力线尽可能多的被音圈43切割，以形成更大的驱动力，本实施例的磁路系统30还包括叠设于主磁钢31的主极芯32以及嵌设盆架10的上夹板35。上夹板35包括固定于盆架10的呈环状的固定环351以及由固定环351向副磁钢33延伸的副极芯352。进一步的，副磁钢33与副极芯352的数量均为两个，两个副磁钢33设置在主磁钢31的相对两侧，两个副极芯352由固定环351分别向两个副磁钢33延伸并分别叠设于两个副磁钢33。
进一步的，振动系统40还包括弹性支撑件44，其包括固定连接于盆架10的连接头段441、固定连接于音圈43背离振膜41一端的支撑段443以及连接连接头段441与支撑段443的弹性承接段442。弹性支撑件44将音圈43弹性悬挂于振膜41下方，进一步提升整个振动系统40的可靠性。
综上所述，在振膜41振动的过程中，通过将振膜41中的第一侧壁4121、第二侧壁4123和顶壁4122三者设置成不同的厚度，并且第二侧壁4123的厚度大于第一侧壁4121的厚度，第一侧壁4121的厚度大于顶壁4122的厚度。这样的设置能够调整振膜41结构强度，抬高振膜41的上振幅，抑制下振幅，并且同步优化振膜41的上下振幅最高点左右偏移不对称的问题，从而改善产品摇晃，降低发声装置的失真。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (9)

  1. 一种发声装置，其包括盆架以及分别固定于所述盆架的振动系统及具有磁间隙的磁路系统，所述振动系统包括固定于所述盆架的振膜、插设于所述磁间隙以驱动所述振膜振动发声的音圈，其特征在于，所述振膜包括固定于所述盆架的折环，所述折环包括一横截面为弧形结构的突出部，所述突出部包括顶壁、自所述顶壁的靠近所述折环内部的一端向所述磁路系统延伸的第一侧壁以及自所述顶壁的远离所述折环内部的一端向磁路系统延伸的第二侧壁，所述第二侧壁的厚度大于所述第一侧壁的厚度，所述第一侧壁的厚度大于所述顶壁的厚度。
  2. 根据权利要求1所述的发声装置，其特征在于，所述第一侧壁包括靠近所述顶壁的第一连接部，所述第一侧壁与所述顶壁通过所述第一连接部平滑过渡连接且所述第一连接部的厚度沿所述第一侧壁到所述顶壁的方向逐渐减小，所述第二侧壁包括靠近所述顶壁的第二连接部，所述第二侧壁与所述顶壁通过所述第二连接部平滑过渡连接且厚度沿所述第二侧壁到所述顶壁的方向逐渐减小。
  3. 根据权利要求2所述的发声装置，其特征在于，所述突出部向远离所述磁路系统方向弯曲凸出。
  4. 根据权利要求3所述的发声装置，其特征在于，所述折环还包括自所述突出部向所述折环内部水平延伸的第一固定部以及自所述突出部向远离所述折环水平延伸的第二固定部，所述振膜还包括叠设于所述折环的球顶。
  5. 根据权利要求4所述的发声装置，其特征在于，所述折环为中空结构，所述球顶覆盖所述中空结构并与所述第一固定部固定连接。
  6. 根据权利要求1所述的发声装置，其特征在于，所述振膜为硅胶，橡胶，聚醚醚酮，热塑性聚氨酯弹性体橡胶、硅橡胶等高分子材料。
  7. 根据权利要求1所述的发声装置，其特征在于，所述磁路系统包括磁轭、固定于所述磁轭的主磁钢以及分别间隔设置于所述主磁钢相对两侧并与所述主磁钢形成所述磁间隙的副磁钢。
  8. 根据权利要求7所述的发声装置，其特征在于，所述副磁钢包括两个，所述磁路系统还包括叠设于所述主磁钢的主极芯以及嵌设于所述盆架的上夹板，所述上夹板包括固定于所述盆架的呈环状的固定环和由所述固定环分别向两个所述副磁钢延伸的副极芯，所述副极芯分别叠设于两个所述副磁钢。
  9. 根据权利要求1所述的发声装置，其特征在于，所述振动系统还包括弹性支撑件，所述弹性支撑件包括固定连接于所述盆架的连接头段、固定连接于所述音圈背离所述振膜一端的支撑段以及连接所述连接头段与所述支撑段的弹性承接段。
PCT/CN2018/125963 2018-12-30 2018-12-30 发声装置 Ceased WO2020140182A1 (zh)

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