WO2020133515A1 - 扬声器 - Google Patents

扬声器 Download PDF

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Publication number
WO2020133515A1
WO2020133515A1 PCT/CN2018/125838 CN2018125838W WO2020133515A1 WO 2020133515 A1 WO2020133515 A1 WO 2020133515A1 CN 2018125838 W CN2018125838 W CN 2018125838W WO 2020133515 A1 WO2020133515 A1 WO 2020133515A1
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WIPO (PCT)
Prior art keywords
diaphragm
voice coil
magnet
elastic support
support member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/CN2018/125838
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English (en)
French (fr)
Inventor
吴融融
吉成霞
陈卫敏
陈辉
刘柯佳
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AAC Technologies Holdings Nanjing Co Ltd
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AAC Technologies Holdings Nanjing Co Ltd
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Priority to PCT/CN2018/125838 priority Critical patent/WO2020133515A1/zh
Publication of WO2020133515A1 publication Critical patent/WO2020133515A1/zh
Anticipated expiration legal-status Critical
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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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means

Definitions

  • the invention relates to the technical field of electroacoustic conversion, in particular to a speaker in the field of electroacoustic conversion.
  • the design SLS product shows a gradual downward trend after the frequency response passes the intermediate frequency (2kHz) region, and the resonance peak and valley appear at 15kHz;
  • FIG. 1 it is a partial exploded schematic view of the existing speaker.
  • the speaker also includes a dome 101.
  • the frequency response of the existing speaker exceeds the intermediate frequency (2kHz) area It showed a gradual downward trend, and the frequency response of the five magnetic circuits was basically flat after passing through the intermediate frequency region, and the drop between 7, 8 kHz and 2 kHz was very small.
  • An object of the present invention is to provide a speaker which can solve the technical problem that the frequency response shows a downward trend after passing through the intermediate frequency region.
  • a loudspeaker includes a basin rack with a storage space, a magnetic circuit system and a vibration system housed in the basin rack, the magnetic circuit system includes a lower splint and a lower splint A first magnet part and a second magnet part, the second magnet part is provided on both sides of the first magnet part and forms a magnetic gap with the first magnet part, the vibration system includes a A diaphragm of the frame, a voice coil supported on the side of the diaphragm close to the magnetic circuit system, and an elastic support member fixed on an end of the voice coil away from the diaphragm, the voice coil is suspended on the magnetic In the gap, the elastic support member and the second magnet portion are located on different sides of the first magnet portion, an air channel is formed between the elastic support member and the diaphragm, and the speaker further includes a The basin frame extends into the damping member in the air channel, and the damping member is located between the diaphragm and the elastic support member and is space
  • the first magnet portion includes a main magnet and a main pole core attached to a side of the main magnet away from the lower splint
  • the second magnet portion includes a sub magnet and a stack A magnetic gap is formed between the primary magnetic steel and the secondary magnetic steel at the secondary pole core on the side of the secondary magnetic steel away from the lower clamping plate.
  • the secondary pole core is in a ring shape and embedded in the basin frame, and the secondary pole core extends toward the air passage to form the damping member.
  • the damping member and the secondary pole The pole core is integrally formed.
  • the thickness of the damping member along the vibration direction of the diaphragm gradually decreases toward the voice coil.
  • the damping member is a mesh plate, and the mesh plate is interposed between the secondary pole core and the basin frame.
  • the inner side of the basin holder extends toward the air passage to form the damping member, and the damping member is integrally formed with the basin holder.
  • the elastic support includes a flexible circuit board fixed at one end to the voice coil and at the other end to the basin frame, and a side fixed to the flexible circuit board away from the voice coil A sound film, the sound film protrudes away from the flexible circuit board to avoid the flexible circuit board.
  • the voice coil has a frame-shaped structure, including two longitudinal sides and two lateral sides, the two longitudinal sides are respectively located in the magnetic gap, and the two lateral sides are respectively located on one side of the air channel.
  • the beneficial effect of the present invention is that the speaker of the present invention increases the air damping in the vicinity of the diaphragm by providing a corresponding damping member in the air channel, thereby improving the overall trend of high-frequency frequency response and the frequency response resonance valley due to the divided vibration .
  • FIG. 1 is an exploded schematic diagram of a speaker in the prior art.
  • FIG. 2 is a schematic diagram of the assembly structure of the speaker of the present invention.
  • FIG. 3 is an exploded schematic diagram of the speaker in the first embodiment
  • FIG. 4 is a schematic cross-sectional view of the speaker shown in FIG. 2 along line A-A in Embodiment 1;
  • FIG. 5 is a schematic structural diagram of a secondary pole core in the prior art
  • FIG. 6 is a schematic structural diagram of a secondary pole core in Embodiment 1;
  • FIG. 7 is a schematic cross-sectional view of the speaker shown in FIG. 2 along line A-A in Embodiment 2;
  • FIG. 8 is a schematic view of the structure of the basin shelf in the second embodiment
  • FIG. 9 is a schematic cross-sectional view of the speaker shown in FIG. 2 along line A-A in Embodiment 3;
  • FIG. 10 is a schematic structural diagram of a mesh mesh plate in Embodiment 3.
  • Figure 12 is a comparison chart of the frequency response of the original five-magnetic circuit test after increasing the damping near the upper diaphragm.
  • a speaker unit 100 includes a basin holder 1 with a storage space 1, a magnetic circuit system 2 and a vibration system 3 housed in the basin holder 1; the basin
  • the frame 1 is preferably a frame-shaped structure, including two longitudinal side walls and two lateral side walls.
  • the magnetic circuit system 2 includes a lower clamping plate 5 and a main magnetic steel 21 and an auxiliary magnetic steel 23 attached to the lower clamping plate 5
  • the number of magnets 23 is two, and the two auxiliary magnets 23 are located on opposite sides of the main magnet 21 respectively; a magnetic gap is formed between the main magnet 21 and the auxiliary magnet 23;
  • the magnetic circuit system 2 further includes The main pole core 22 disposed on the main magnetic steel 21 and the sub pole core 24 disposed around the main pole core 22, and the sub pole core 24 has a ring shape and is embedded in the basin frame 1.
  • the vibration system 3 includes a diaphragm 31 fixed on the basin frame 1, a voice coil 33 supported on the side of the diaphragm 31 close to the magnetic circuit system 2, and a voice coil 33 fixed on the voice coil 33 away from the vibration
  • An elastic support at one end of the membrane 31, the voice coil 33 is suspended in the magnetic gap;
  • the elastic support includes a flexible circuit board with one end fixed to the voice coil 33 and the other end fixed to the basin frame 1 4, and the sound film 34 fixed on the side of the flexible circuit board 4 away from the voice coil 33, the sound film 34 protrudes away from the flexible circuit board 4 to avoid the flexible circuit board 4,
  • the diaphragm 31 and the voice membrane 34 are fixedly connected to the top and bottom ends of the voice coil 33 so as to vibrate with the voice coil 33, and the flexible circuit board 4 is electrically connected to the voice coil 33.
  • a dome 32 is also covered at the diaphragm 31.
  • the voice coil 33 has a frame structure, and in this embodiment is a frame structure with a rectangular cross section, including two longitudinal sides/long sides and two lateral sides/short sides;
  • the main magnetic steel 21 is preferably a rectangular parallelepiped structure, along The circumferential direction includes a pair of longitudinal side walls/long side walls and a pair of lateral side walls/short side walls.
  • the two longitudinal sides of the voice coil 33 are respectively located in the two first magnetic gaps formed between the longitudinal side walls of the main magnet 21 and the two pair of magnets 23, and the sound film 34 is located on both lateral sides of the voice coil 33 and the basin frame 1 Between the lateral sidewalls.
  • the main magnetic steel 21 and the auxiliary magnetic steel 23 are polarized in the axial direction, and the polarization directions are opposite. After the magnetic force lines emerge from the main magnetic steel 21, they pass through the longitudinal edges of the main pole core 22 and the voice coil 33.
  • the secondary pole core 24, the secondary magnetic steel 23, and the lower clamping plate 5 return to the main magnetic steel 21.
  • the main magnetic steel 21 and the auxiliary magnetic steel 23 are made of permanent magnetic material, and the main pole core 22, the auxiliary pole core 24 and the lower clamping plate 5 are made of magnetic conductive material such as carbon steel.
  • the structure of the secondary pole core 24 is mainly improved to increase the air damping under the diaphragm 31.
  • the specific structural improvement is to correspond the secondary pole core 24 to the sound One side of the membrane 34 extends in the direction of the voice coil 33 and covers above the flexible circuit board 4 and the voice membrane 34, thereby dividing the air gap formed between the inner surface of the upper sound membrane and the basin frame and the outer surface of the voice coil Second, there is a relatively narrow air gap between the basin holder 1 and the voice coil 33.
  • the secondary pole core may be appropriately cut off or made thinner.
  • FIG. 5 is a schematic structural diagram of a secondary pole core in the prior art. It can be clearly found that the short side of the secondary pole core 24 of this embodiment is significantly wider than the secondary pole core in the existing scheme. The air channel 6 becomes thinner to increase the acoustic resistance.
  • the structure of the basin frame 1 is mainly improved to increase the air damping under the diaphragm 31, and the inside of the basin frame 1 faces the air channel
  • the damping member 11 is extended to form, and the damping member 11 is integrally formed with the basin frame 1.
  • an extension plate is extended inwardly from the inner surface of the side wall of the basin frame 1 corresponding to the flexible circuit board 4 and the sound membrane 34, so that the air passage 6 is added with a damping member 11 which covers the flexible circuit board 4 and the sound membrane 34 above, so that there is a relatively narrow air gap between the basin holder and the voice coil.
  • the air damping under the diaphragm 31 is increased by adding another separate structure.
  • a specific improvement is to stick a
  • the mesh 7 is laminated, and then the three sides of the mesh 7 are fixed and then covered over the flexible circuit board 4 and the sound film 34.
  • the mesh plate 7 is used to increase the acoustic resistance of the air channel 6 below the diaphragm 31.
  • the main purpose of the mesh plate 7 is to increase the acoustic resistance of the air passage 6 under the diaphragm 31.
  • the difference between the five-magnetic circuit and the three-magnetic circuit results in the air passage between the diaphragm and the magnetic gap not being the same (the boundary layer damping is increased); the five-magnetic circuit has less air, and the damping will cause the Q value at F0 to decrease, which is high Frequency resonance and anti-resonance trends will also be smoothed out.
  • ori is the original, which is the line represented by III; leak is the air at the leakage plus damping, which is the line represented by I; dia is the air under the diaphragm Add damping, which is the line represented by II; from the simulation results in the two figures, it can be seen that adding damping to the air leaked by the monomer will affect the Q value at F0, but has little effect on the high-frequency resonance peak and valley ; Add damping to the air under the diaphragm, the Q value at F0 is similar to that of the single leakage plus damping, but the mid- and high-frequency resonance is obviously smoothed out, and the overall trend has also increased. Through structural design, the frequency response can be improved in the overall high-frequency tilting trend.
  • the product design is mainly performed by changing the width and shape of the air passage, and the effect to be achieved by the present invention can also be achieved by designing all air passages.

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

Abstract

本发明提供了一种扬声器，包括具有收容空间的盆架、收容于盆架内的磁路系统和振动系统，磁路系统包括下夹板及贴设于下夹板的第一磁体部和第二磁体部，第二磁体部设置于第一磁体部的两侧，振动系统包括固定在盆架的振膜、支撑在振膜靠近磁路系统一侧的音圈以及固定在音圈远离振膜一端的弹性支撑件，音圈悬置于磁间隙内，弹性支撑件与振膜之间形成空气通道，扬声器还包括固定在盆架并延伸至空气通道内的阻尼件，且阻尼件位于振膜和弹性支撑件之间且与振膜、音圈及弹性支撑件间隔设置。本发明的扬声器通过在空气通道中设置对应的阻尼件从而使得振膜附近的空气阻尼增大，从而改善高频频响的整体趋势和由于分割振动导致的频响谐振谷。

Description

扬声器 【技术领域】
本发明涉及电声转化技术领域，尤其涉及电声转换领域中的扬声器。
【背景技术】
现有技术中由于磁路结构的设计不同(三磁路和五磁路的区别)，设计SLS产品在频响过了中频(2kHz)区后呈现逐渐下飘趋势，在15kHz出现谐振峰谷；如图1所示，其为现有的扬声器的部分分解结构示意图，从图1中可以看出，在现有技术中音圈104、上振膜102、盆架103和下振膜105之间有条相对宽阔的空气通道，由于磁路结构的设计不同(三磁路和五磁路的区别)，该扬声器还包括有球顶101.现有的扬声器频响过了中频(2kHz)区后呈现逐渐下飘趋势，而五磁路的频响过了中频区后基本平坦，7、8kHz与2kHz间的落差很小。
因此，有必要提供一种能够改善高频频响的整体趋势的扬声器。
【发明内容】
本发明的目的在于提供一种扬声器，其能解决频响过中频区后呈下飘趋势的技术问题。
本发明的技术方案如下：一种扬声器，包括具有收容空间的盆架、收容于所述盆架内的磁路系统和振动系统，所述磁路系统包括下夹板及贴设于所述下夹板的第一磁体部和第二磁体部，所述第二磁体部设置于所述第一磁体部的两侧并与所述第一磁体部形成磁间隙，所述振动系统包括固定在所述盆架的振膜、支撑在所述振膜靠近所述磁路系统一侧的音圈以及固定在所述音圈远离所述振膜一端的弹性支撑件，所述音圈悬置于所述磁间隙内，所述弹性支撑件与所述第二磁体部分别位于所述第一磁体部的不同侧，所述弹性支撑件与振膜之间形成空气通道，所述扬声器还包括固定在所述盆架并延伸至所述空气通道内的阻尼件，且所述阻尼件位于振膜和弹 性支撑件之间且与所述振膜、所述音圈及所述弹性支撑件间隔设置。
作为本发明的优选，所述第一磁体部包括主磁钢和贴设于所述主磁钢远离所述下夹板一侧的主极芯，所述第二磁体部包括副磁钢和叠设于所述副磁钢远离所述下夹板一侧的副极芯，所述主磁钢和所述副磁钢之间形成磁间隙。
作为本发明的优选地，所述副极芯呈环形并嵌设于所述盆架，所述副极芯对应朝所述空气通道内延伸形成所述阻尼件，所述阻尼件与所述副极芯一体成型。
作为本发明的优选地，所述阻尼件沿所述振膜的振动方向的厚度朝靠近所述音圈的方向逐渐减薄。
作为本发明的优选地，所述阻尼件为网状板，且所述网状板夹设于副极芯与所述盆架之间。
作为本发明的优选地，所述盆架的内侧朝所述空气通道内延伸形成所述阻尼件，所述阻尼件与所述盆架一体成型。
作为本发明的优选地，所述弹性支撑件包括一端固定在所述音圈、另一端固定于所述盆架的柔性电路板，以及固定在所述柔性电路板远离所述音圈一侧的音膜，所述音膜朝远离所述柔性电路板凸出以避让所述柔性电路板。
作为本发明的优选地，所述音圈为框形结构，包括两纵向边和两横向边，两纵向边分别位于磁间隙内，两横向边分别位于空气通道的一侧。
本发明的有益效果在于：本发明的扬声器通过在空气通道中设置对应的阻尼件从而使得振膜附近的空气阻尼增大，从而改善高频频响的整体趋势和由于分割振动导致的频响谐振谷。
【附图说明】
图1为现有技术中扬声器的分解示意图。
图2为本发明的扬声器的组装结构示意图；
图3为实施例一中的扬声器的分解示意图；
图4为在实施例一中图2所示扬声器沿A-A线的剖面示意图；
图5为现有技术中副极芯的结构示意图；
图6为实施例一中副极芯的结构示意图；
图7为在实施例二中图2所示扬声器沿A-A线的剖面示意图；
图8为实施例二中盆架的结构示意图；
图9为在实施例三中图2所示扬声器沿A-A线的剖面示意图；
图10为实施例三中mesh网状板的结构示意图；
图11为本发明的仿真结果对比图；
图12为在上振膜下方附近增大阻尼后与原五磁路测试频响对比图。
附图标记：100、扬声器；1、盆架；11、阻尼件；2、磁路系统；21、主磁钢；22、主极芯；23、副磁钢；24、副极芯；3、振动系统；31、振膜；32、球顶；33、音圈；34、音膜；4、柔性电路板；5、下夹板；6、空气通道；7、mesh网状板。
【具体实施方式】
下面结合附图和实施方式对本发明作进一步说明。
实施例一
如图2和图3所示，依照本发明一实施例的扬声器单体100包括具有收容空间的盆架1、收容于所述盆架1内的磁路系统2和振动系统3；所述盆架1优选为框形结构，包括两纵向侧壁和两横向侧壁，所述磁路系统2包括下夹板5及贴设于所述下夹板5的主磁钢21和副磁钢23，副磁钢23的数量为两个，且两个副磁钢23分别位于主磁钢21相对的两侧；主磁钢21和副磁钢23之间形成磁间隙；所述磁路系统2还包括设置于主磁钢21上的主极芯22，以及环绕主极芯22设置的副极芯24，且所述副极芯24呈环形并嵌设于所述盆架1。
所述振动系统3包括固定在所述盆架1的振膜31、支撑在所述振膜31靠近所述磁路系统2一侧的音圈33以及固定在所述音圈33远离所述振膜31一端的弹性支撑件，所述音圈33悬置于所述磁间隙内；所述弹性支撑件包括一端固定在所述音圈33、另一端固定于所述盆架1的柔性电路板4，以及固定在所述柔性电路板4远离所述音圈33一侧的音膜34，所述音膜 34朝远离所述柔性电路板4凸出以避让所述柔性电路板4，振膜31和音膜34分别固定连接至音圈33的顶端和底端从而可随音圈33振动，所述柔性电路板4与音圈33电连接。振膜31处还盖设有球顶32。
优选地，音圈33为框形结构，在本实施例中为截面为长方形的框形结构，包括两纵向边/长边和两横向边/短边；主磁钢21优选为长方体结构，沿周向包括一对纵向侧壁/长侧壁和一对横向侧壁/短侧壁。音圈33的两纵向边分别位于主磁钢21的纵向侧壁与两副磁钢23之间形成的两个第一磁间隙内，音膜34位于音圈33的两横向边与盆架1的横向侧壁之间。在本实施例中，主磁钢21和副磁钢23皆沿轴向极化，且极化方向相反，磁力线从主磁钢21出来后，经过主极芯22、音圈33的纵向边、副极芯24、副磁钢23、下夹板5后回到主磁钢21。主磁钢21和副磁钢23由永磁材料制成，主极芯22、副极芯24及下夹板5由导磁材料如碳钢制成。
如图4和图6所示，在本实施例中主要是通过对副极芯24的结构进行改善从而使得振膜31下方的空气阻尼增大，具体的结构改进是将副极芯24对应音膜34的一侧向音圈33方向延伸，并盖在柔性电路板4和音膜34的上方，从而将形成于上音膜及盆架内表面与音圈外表面之间的空气间隙一分为二，使得盆架1和音圈33之间存在较为狭小的空气间隙。在进行具体实施操作的时候，为了给柔性电路板4让出振动空间，副极芯可以适当削去或做薄一些。具体副极芯24处的阻尼件沿所述振膜31的振动方向的厚度朝靠近所述音圈1的方向逐渐减薄。图5为现有技术中的副极芯的结构示意图，可以明显发现，本实施例的副极芯24的短边侧明显宽于现有方案中的副极芯，通过多出的这部分使得空气通道6变薄进而增加声阻。
实施例二
如图7和图8所示，在本实施例中主要是通过对盆架1的结构进行改善从而使得振膜31下方的空气阻尼增大，所述盆架1的内侧朝所述空气通道内延伸形成所述阻尼件11，且所述阻尼件11与所述盆架1一体成型。具体地，从盆架1侧壁内表面对应柔性电路板4和音膜34处向内延伸一延伸板，使得空气通道6中增加了阻尼件11，该阻尼件11盖在柔性电路板4 和音膜34的上方，以使得盆架和音圈之间存在较为狭小的空气间隙。
实施例三
如图9和图10所示，在本实施例中主要是通过增加另外单独的结构来使得振膜31下方的空气阻尼增大，在本实施例中具体改进是在副极芯24上贴一层网状板(mesh)7，然后使得网状板7的三边固定，然后盖在柔性电路板4和音膜34的上方。利用网状板7增大振膜31下方的空气通道6的声阻。
除了网状板7之外，还可以设置为其他的材料的板，设置该网状板的7主要目的是增加振膜31下方的空气通道6的声阻。
五磁路和三磁路的区别，导致了振膜下方到磁间隙之间的空气通道不一样大(边界层阻尼增大)；五磁路空气少，阻尼大会导致F0处Q值降低，高频的谐振及反谐振趋势也会被抹平。
由于高频情况下加速度和频率平方成正比，知晓影响高频振动系统模态的阻尼只有振膜下方这部分空气(高速振动的空气加速度无法受更远位置的阻尼影响)。因此泄漏阻尼只影响F0处Q值，对高频影响很小。如图11和图12所示，在图11中，ori为原始，也即是III所表示的线；leak为泄漏处空气加阻尼，也即是I所表示的线；dia为振膜下方空气加阻尼，也即是II所表示的线；从两幅图中的仿真结果可以看出，对单体泄漏的空气处加阻尼会影响F0处Q值，但对高频谐振峰谷影响很小；对振膜下方空气增加阻尼，F0处Q值和单体泄漏加阻尼差不多，但中高频谐振明显被抹平，整体趋势也变上扬。通过结构设计，频响能够在高频整体翘起趋势上有所改善。
故而在本发明中通过在三磁路产品音膜下方空间的结构设计或吸收材料填充，实现了对于振动系统高频阻尼的提升，从而改善了高频频响的整体趋势和由于分割振动导致的频响谐振谷。在本发明中其主要是通过改变空气通路的宽窄、形状来进行产品设计，还可以通过设计都成空气通路来实现本发明所要达到的效果。
需要说明的是，本发明中所有方向性指示(诸如上、下、内、外、顶 部、底部……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
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 (8)

  1. 一种扬声器，包括具有收容空间的盆架、收容于所述盆架内的磁路系统和振动系统，所述磁路系统包括下夹板及贴设于所述下夹板的第一磁体部和第二磁体部，所述第二磁体部设置于所述第一磁体部的两侧并与所述第一磁体部形成磁间隙，所述振动系统包括固定在所述盆架的振膜、支撑在所述振膜靠近所述磁路系统一侧的音圈以及固定在所述音圈远离所述振膜一端的弹性支撑件，所述音圈悬置于所述磁间隙内，其特征在于，所述弹性支撑件与所述第二磁体部分别位于所述第一磁体部的不同侧，所述弹性支撑件与振膜之间形成空气通道，所述扬声器还包括固定在所述盆架并延伸至所述空气通道内的阻尼件，且所述阻尼件位于振膜和弹性支撑件之间且与所述振膜、所述音圈及所述弹性支撑件间隔设置。
  2. 根据权利要求1所述的扬声器，其特征在于：所述第一磁体部包括主磁钢和贴设于所述主磁钢远离所述下夹板一侧的主极芯，所述第二磁体部包括副磁钢和叠设于所述副磁钢远离所述下夹板一侧的副极芯，所述主磁钢和所述副磁钢之间形成磁间隙。
  3. 根据权利要求2所述的扬声器，其特征在于：所述副极芯呈环形并嵌设于所述盆架，所述副极芯对应朝所述空气通道内延伸形成所述阻尼件，所述阻尼件与所述副极芯一体成型。
  4. 根据权利要求3所述的扬声器，其特征在于：所述阻尼件沿所述振膜的振动方向的厚度朝靠近所述音圈的方向逐渐减薄。
  5. 根据权利要求1所述的扬声器，其特征在于：所述阻尼件为网状板，且所述网状板夹设于副极芯与所述盆架之间。
  6. 根据权利要求1所述的扬声器，其特征在于：所述盆架的内侧朝所述空气通道内延伸形成所述阻尼件，所述阻尼件与所述盆架一体成型。
  7. 根据权利要求1-6中任意一项所述的扬声器，其特征在于：所述弹性支撑件包括一端固定在所述音圈、另一端固定于所述盆架的柔性电路板，以及固定在所述柔性电路板远离所述音圈一侧的音膜，所述音膜朝远离所 述柔性电路板凸出以避让所述柔性电路板。
  8. 根据权利要求1所述的扬声器，其特征在于：所述音圈为框形结构，包括两纵向边和两横向边，两纵向边分别位于磁间隙内，两横向边分别位于空气通道的一侧。
PCT/CN2018/125838 2018-12-29 2018-12-29 扬声器 Ceased WO2020133515A1 (zh)

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CN204810521U (zh) * 2015-07-03 2015-11-25 瑞声光电科技(常州)有限公司 电声器件
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