WO2022067922A1 - 一种发声单体 - Google Patents

一种发声单体 Download PDF

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Publication number
WO2022067922A1
WO2022067922A1 PCT/CN2020/123816 CN2020123816W WO2022067922A1 WO 2022067922 A1 WO2022067922 A1 WO 2022067922A1 CN 2020123816 W CN2020123816 W CN 2020123816W WO 2022067922 A1 WO2022067922 A1 WO 2022067922A1
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WO
WIPO (PCT)
Prior art keywords
sound
curved portion
dome
generating unit
folded plate
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Application number
PCT/CN2020/123816
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English (en)
French (fr)
Inventor
陆冬
王常亮
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声光电科技(常州)有限公司
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Application filed by 瑞声声学科技(深圳)有限公司, 瑞声光电科技(常州)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022067922A1 publication Critical patent/WO2022067922A1/zh

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Classifications

    • 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

Definitions

  • the present application relates to the field of electro-acoustics, and in particular, to a sound-generating monomer.
  • the dome is glued and connected to the sound membrane through the central glue and is located below the sound membrane, and the area where the sound membrane and the dome are glued is flat.
  • the sound membrane and the dome are easily separated at large amplitudes, and the problem of product failure is becoming more and more prominent.
  • the purpose of the present application is to provide a sound-generating unit to solve the technical problem in the prior art that the mid-range diaphragm and the dome will separate and fail under large-amplitude vibration, thereby causing the sound-generating device to fail.
  • an embodiment provides a sound-generating unit, comprising a basin frame, a magnetic circuit system fixed on the basin frame, and a vibration system driven by the magnetic circuit system and vibrating and producing sound, the vibration system Including a sound film fixed on the basin frame, the sound film includes a first folded plate and a folded ring arranged around the first folded plate; the vibration system also includes a affixed and fixed on the first folded plate.
  • the first folded plate has a curved portion, and the curved portion is formed with a glue-containing groove for accommodating colloid with an opening facing the dome, and the edge of the dome is It is located in the orthographic projection of the glue container along the vibration direction of the sound membrane.
  • the curved portion extends annularly along the edge of the dome.
  • the curved portion includes a first curved portion formed with the glue-containing groove and a second curved portion disposed around the first curved portion, the first curved portion extending from the first folded plate
  • the second curved portion is formed concavely from the first folded plate toward the spherical top, and the second curved portion includes a curved surface connected with the first curved portion, And the curved surface is located on the peripheral side of the dome and is spaced from the dome.
  • the projection of the second curved portion to the magnetic circuit system does not overlap with the projection of the dome to the magnetic circuit system.
  • the cross section of the first curved portion along the vibration direction of the sound membrane is circular arc shape
  • the cross section of the second curved portion along the vibration direction of the sound membrane is circular arc shape
  • the first folded plate further includes a flat plate portion extending from a side of the first curved portion away from the second curved portion and away from the folded ring, the flat plate portion and the ball Top glued connection.
  • the flat plate portion is connected to the folded ring through the curved portion, and the folded ring protrudes toward the magnetic circuit system along the vibration direction of the sound membrane.
  • the sum of the opening width of the first curved portion and the opening width of the second curved portion is 0.3 mm-0.4 mm.
  • the width of the opening of the first curved portion is 0.15mm-0.25mm.
  • the vibration system further includes a voice coil for driving the dome to vibrate and a voice coil skeleton abutting between the voice coil and the dome, the voice coil skeleton having a The openings on the inner and outer sides of the voice coil are communicated.
  • the dome is attached and fixed on the side close to the magnetic circuit system, the curved part of the first folded plate is formed with an adhesive groove with an opening facing the dome, and the dome and the first folded plate are glued together
  • the glue injected into the glue container overflows and glues along the edge of the dome, so that the edge of the dome is
  • the thickness of the colloid between it and the first folded plate is increased, thereby reducing the glue stress level between the dome and the sound membrane; that is, this technical solution solves the problem of the prior art that the mid-range membrane and the dome will be subject to large-amplitude vibration.
  • the technical problem of separation failure which in turn leads to the failure of the sound-emitting device.
  • FIG. 1 is a schematic diagram of the overall structure of a sounding monomer according to an embodiment of the application
  • Fig. 2 is the exploded schematic diagram of the sounding monomer in Fig. 1;
  • Fig. 3 is the structural schematic diagram of the sound membrane of the sounding monomer in Fig. 1;
  • Fig. 4 is the sectional view of the A-A direction of the sound membrane in Fig. 3;
  • Fig. 5 is the sectional view of the B-B direction of the sounding monomer in Fig. 1;
  • Fig. 6 is a partial enlarged view at C in Fig. 4;
  • Fig. 7 is a partial enlarged view at D in Fig. 5;
  • Figure 8 is a schematic diagram of the normal tensile stress of the sound membrane and the dome
  • FIG. 9 is a schematic diagram of the shear stress of the sound membrane and the dome.
  • the present application provides a sound-generating unit 100 , which includes a basin frame 10 , a magnetic circuit system 20 fixed on the basin frame 10 , and a vibrating and sounding device driven by the magnetic circuit system 20 .
  • Vibration system 30 Vibration system 30 .
  • the vibration system 30 includes a sound membrane 31 fixed to the basin frame 10 , and the sound membrane 31 includes a first folded plate 311 and surrounds the first folded plate 31 . 311; the vibration system 30 also includes a dome 32 attached to the first folded plate 311 close to the side of the magnetic circuit system 20, the first folded plate 311 has a curved portion 3111, and the curved portion 3111 is formed with an opening facing
  • the dome 32 has an adhesive groove 3111c for accommodating colloid, and the edge of the dome 32 is located in the orthographic projection of the adhesive groove 3111c along the vibration direction of the sound membrane 31 .
  • the dome 32 is attached and fixed on the side of the first folded plate 311 close to the magnetic circuit system 20 , and the curved portion 3111 of the first folded plate 311 is formed with an adhesive groove 3111c with an opening facing the dome 32 .
  • the top 32 and the first folded plate 311 are glued and connected, since the edge of the spherical top 32 is located in the orthographic projection of the glue container 3111c along the vibration direction of the sound film 31, the colloid injected into the glue container 3111c overflows and flows along the direction of the vibration of the sound film 31.
  • the edge of the dome 32 is glued, so that the thickness of the glue connected between the edge of the dome 32 and the first folded plate 311 is increased, thereby reducing the glue stress level between the dome 32 and the sound membrane 31;
  • the midrange diaphragm 31 and the dome 32 will be separated and fail under the vibration of large amplitude, thereby causing the failure of the sound-emitting device.
  • the glue is injected into the glue container 3111 c and overflows to form a glue layer 37 , so as to realize the connection between the sound membrane 31 and the dome 32 .
  • the curved portion 3111 extends annularly along the edge of the dome 32 , so as to reduce the adhesive stress between the dome 32 and the sound membrane 31 uniformly as a whole.
  • the curved portion 3111 includes a first curved portion 3111a formed with an adhesive groove 3111c and a second curved portion 3111b disposed around the first curved portion 3111a.
  • the first curved portion 3111a The second curved portion 3111b is formed concavely from the first folding plate 311 toward the dome 32, and the second curved portion 3111b includes a curved surface that is in contact with the first curved portion 3111a. 3111d, and the curved surface 3111d is located on the peripheral side of the dome 32 and is spaced from the dome 32.
  • the colloid injected into the glue tank 3111c overflows to the curved surface 3111d and the spherical top 32, and the curved surface 3111d is located on the peripheral side of the spherical top 32. Therefore, there is a binding force between the spherical top 32 and the curved surface 3111d.
  • the bonding force between the sound membrane 31 reduces the gluing stress between the dome 32 and the sound membrane 31 .
  • the projection of the second curved portion 3111 b to the magnetic circuit system 20 does not overlap with the projection of the dome 32 to the magnetic circuit system 20 .
  • the cross section of the first bending portion 3111a along the vibration direction of the sound membrane 31 may be circular arc or rectangular, and the cross section of the second bending portion 33111b along the vibration direction of the sound membrane 31 may be circular Arc or rectangle etc.
  • the cross section of the first bending portion 3111a along the vibration direction of the sound membrane 31 is arc-shaped, and the cross-section of the second bending portion 33111b along the vibration direction of the sound membrane 31 is arc-shaped.
  • the first curved portion 3111a and the second curved portion 3111b are both arc-shaped, and the opening width of the first curved portion 3111a is d1, and the opening width of the second curved portion 3111b is d2, then the sum of the opening width of the first curved portion 3111a and the opening width of the second curved portion 3111b is d, wherein the range of the sum d of the opening width of the first curved portion 3111a and the opening width of the second curved portion 3111b is 0.3mm-0.4mm; wherein the radius of the first curved portion 3111a is about 0.2mm, the opening width d1 of the first curved portion 3111a is in the range of 0.15mm-0.25mm, and the radius of the second curved portion 3111b is about 0.1mm, The opening width d2 of the second curved portion 3111b is approximately 0.15 mm.
  • Fig. 8 shows the normal tensile stress of the sound membrane 31 and the dome 32 after they are glued together.
  • Fig. 9 shows the shear stress of the sound membrane 31 and the dome 32 after they are glued together.
  • the first folding plate 311 further includes a flat plate portion 3112 extending from the side of the first curved portion 3111a away from the second curved portion 33111b toward the folding ring 312 , and the adhesive layer 37 extends to the flat plate portion 3112 and the between the domes 32 to realize the glue connection between the two.
  • the flat plate portion 3112 cooperates with the curved portion 3111 to ensure the relative stability between the dome 32 and the sound membrane 31 , so as to reinforce the sound membrane 31 through the dome 32 .
  • the flat plate portion 3112 is connected to the folded ring 312 through the curved portion 311 , and the folded ring 312 protrudes toward the magnetic circuit system 20 along the vibration direction of the sound membrane 31 to ensure the acoustic performance of the sounding unit 100 .
  • the flat plate portion 3112 has an annular structure, which not only ensures that the connection between the sound membrane 31 and the dome 32 is strengthened through the flat plate portion, but also saves the material of the sound membrane 31 .
  • the sound membrane 31 further includes a folded ring 312, and the folded ring 312 is arranged around the second curved portion 3111b, so as to maximize the gluing area between the first folded plate 311 and the dome 32 and improve the bonding force, Reduce internal stress.
  • the sound film 31 further includes a second folded plate 313 surrounding the folding ring 312 , and the second folded plate 313 is fixedly connected with the basin frame 10 to realize the connection between the sound film 31 and the basin frame 10 ;
  • the folded plate 313 is provided with a positioning notch 3131
  • the basin frame 10 is provided with a locating post 11 matching with the positioning notch 3131 .
  • the vibration system 30 further includes a voice coil 33 located under the dome 32 , a voice coil bobbin 34 located between the voice coil 33 and the dome 32 , and electrically connected to the voice coil 33
  • the flexible circuit board 36 and the lower sound film 35 arranged opposite the sound film 31 and fixed on the flexible circuit board 36 .
  • the voice coil 33 is used to drive the dome 32 to drive the sound membrane 31 to vibrate and sound
  • the voice coil skeleton 34 has an opening 341 for connecting the inner and outer sides of the voice coil 33, through which the inner and outer air pressure of the voice coil 33 can be balanced.
  • the magnetic circuit system 20 includes a main magnetic steel 21, a secondary magnetic steel 22 forming a magnetic gap with the main magnetic steel 21, and a pole core 23 attached to the main magnetic steel 21, wherein the voice coil 33 is at least partially inserted into set in the magnetic gap.
  • the magnetic circuit system 20 drives the voice coil 33 to move in the magnetic gap, and then drives the dome 32 and the sound membrane 31 to vibrate and produce sound through the ring skeleton 34 , and improves the acoustic effect of the sound generator through the cooperation of the lower sound membrane 35 .
  • the present application also provides a speaker box, the speaker box includes the above-mentioned sound generating unit 100, therefore, the stability between the dome 32 and the sound film 31 in the speaker box is strong, so as to prevent the speaker box from being damaged by the dome 32 Separated from the sound membrane 31 and failed.

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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)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

本申请提供了一种发声单体，包括盆架、固定于所述盆架上的磁路系统和经所述磁路系统驱动并振动发声的振动系统，其特征在于，所述振动系统包括固定于所述盆架的音膜，所述音膜包括第一折板以及围绕所述第一折板设置的折环；所述振动系统还包括贴设固定于所述第一折板的一侧的球顶，所述第一折板具有弯曲部，所述弯曲部形成有开口朝向所述球顶的用于收容胶体的容胶槽，所述球顶的边缘位于所述容胶槽的沿所述音膜的振动方向上的正投影内。本技术方案解决了现有技术有中音膜与球顶在大振幅的振动下会分离失效，进而导致发声器件失效的技术问题。

Description

一种发声单体 技术领域
本申请涉及电声领域，尤其涉及一种发声单体。
 背景技术
随着电子信息技术的快速发展，越来越多的发声器件应用于各类电子产品上，尤其是广为人们应用的移动通讯设备，人们对发声器件的声学性能有着更高的要求。
 技术问题
现有的发声器件中，球顶通过中心胶与音膜胶合连接并位于音膜的下方，音膜与球顶胶合的区域呈平面。随着发声器件振幅要求的提高，在大振幅下，音膜和球顶容易分离，进而导致产品失效的问题日益突出。
因此，有必要提供一种新型的发声单体来解决上述问题。
 技术解决方案
本申请的目的在于提供一种发声单体，以解决现有技术有中音膜与球顶在大振幅的振动下会分离失效，进而导致发声器件失效的技术问题。
为此，一种实施例中提供了一种发声单体，包括盆架、固定于所述盆架上的磁路系统和经所述磁路系统驱动并振动发声的振动系统，所述振动系统包括固定于所述盆架的的音膜，所述音膜包括第一折板以及围绕所述第一折板设置的折环；所述振动系统还包括贴设固定于所述第一折板靠近所述磁路系统一侧的球顶，所述第一折板具有弯曲部，所述弯曲部形成有开口朝向所述球顶的用于收容胶体的容胶槽，所述球顶的边缘位于所述容胶槽的沿所述音膜的振动方向上的正投影内。
作为一种改进，所述弯曲部沿所述球顶的边缘呈环状延伸。
作为一种改进，所述弯曲部包括形成有所述容胶槽的第一弯曲部和围绕所述第一弯曲部设置的第二弯曲部，所述第一弯曲部自所述第一折板朝远离所述球顶凸起形成，所述第二弯曲部自所述第一折板凹向所述球顶形成，所述第二弯曲部包括与所述第一弯曲部相接的曲面，且所述曲面位于球顶的周侧并与所述球顶间隔设置。
作为一种改进，沿所述音膜的振动方向，所述第二弯曲部向所述磁路系统的投影与所述球顶向所述磁路系统的投影不重叠。
作为一种改进，所述第一弯曲部的沿所述音膜的振动方向的截面呈圆弧形，所述第二弯曲部的沿所述音膜的振动方向的截面呈圆弧形。
作为一种改进，所述第一折板还包括自所述第一弯曲部的远离所述第二弯曲部的一侧朝远离所述折环延伸的平板部，所述平板部与所述球顶胶合连接。
作为一种改进，所述平板部通过所述弯曲部与所述折环连接，所述折环沿所述音膜的振动方向向靠近所述磁路系统凸出。
作为一种改进，所述第一弯曲部的开口宽度与所述第二弯曲部的开口宽度之和为0.3mm-0.4mm。
作为一种改进，所述第一弯曲部的开口宽度为0.15mm-0.25mm。
作为一种改进，所述振动系统还包括用于驱动所述球顶振动的音圈和抵接在所述音圈与所述球顶之间的音圈骨架，所述音圈骨架具有用于连通所述音圈的内外两侧的开口。
 有益效果
本申请的有益效果在于：球顶贴设固定在靠近磁路系统的一侧，第一折板上的弯曲部形成有开口朝向球顶的容胶槽，对球顶和第一折板进行胶合连接时，由于球顶的边缘位于所述容胶槽的沿所述音膜的振动方向上的正投影内，因此，胶体注入进容胶槽溢出并沿球顶的边缘胶合，使得球顶边缘与第一折板之间的胶体厚度增大了，从而降低了球顶与音膜的胶合应力水平；即本技术方案解决了现有技术有中音膜与球顶在大振幅的振动下会分离失效，进而导致发声器件失效的技术问题。
 附图说明
图1为本申请一实施例的发声单体的整体结构示意图；
图2为图1中的发声单体的分解示意图；
图3为图1中的发声单体的音膜的结构示意图；
图4为图3中的音膜的A-A方向的剖视图；
图5为图1中发声单体的B-B方向的剖视图;
图6为图4中C处的局部放大图；
图7为图5中D处的局部放大图；
图8为音膜与球顶的法向拉应力示意图；
图9为音膜与球顶的剪切应力示意图。
图中：
100、发声单体；10、盆架；11、定位柱；20、磁路系统；21、主磁钢；22、副磁钢；23、极芯；30、振动系统；31、音膜；311、第一折板；3111、弯曲部；3111a、第一弯曲部；3111b、第二弯曲部；3111c、容胶槽；3111d、曲面；3112、平板部；312、折环；313、第二折板；3131、定位缺口；32、球顶；33、音圈；34、音圈骨架；341、开口；35、下音膜；36、柔性电路板；37、胶层。
 本发明的实施方式
为了便于理解本申请，下面将参照相关附图对本申请进行更全面的描述。附图中给出了本申请的较佳的实施例。但是，本申请可以通过其他多种不同的形式来实现，并不限于本文所描述的实施例。相反地，提供这些实施例的目的是使对本申请的公开内容的理解更加透彻全面。
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。本文所使用的术语“及／或”包括一个或多个相关的所列项目的任意的和所有的组合。
请参阅图1、图2及图5，本申请提供了一种发声单体100，其包括盆架10、固定于盆架10上的磁路系统20和经磁路系统20驱动并振动发声的振动系统30。
在本申请实施例中，参见图3、图4、图6及图7，振动系统30包括固定于盆架10的的音膜31，音膜31包括第一折板311以及围绕第一折板311设置的折环312；振动系统30还包括贴设固定于第一折板311靠近磁路系统20一侧的球顶32，第一折板311具有弯曲部3111，弯曲部3111形成有开口朝向球顶32的用于收容胶体的容胶槽3111c，球顶32的边缘位于容胶槽3111c的沿音膜31的振动方向上的正投影内。
在本申请中，球顶32贴设固定在第一折板311靠近磁路系统20一侧，第一折板311上的弯曲部3111形成有开口朝向球顶32的容胶槽3111c，对球顶32和第一折板311进行胶合连接时，由于球顶32的边缘位于容胶槽3111c的沿音膜31的振动方向上的正投影内，因此，胶体注入进容胶槽3111c溢出并沿球顶32边缘胶合，使得连接在球顶32边缘与第一折板311之间的胶体厚度增大了，从而减小了球顶32与音膜31的胶合应力水平；本技术方案解决了现有技术有中音膜31与球顶32在大振幅的振动下会分离失效，进而导致发声器件失效的技术问题。
参见图2及图7，胶体注入容胶槽3111c并溢出形成胶层37，以实现音膜31与球顶32的连接。
在一些具体的实施例中，参见图3，弯曲部3111沿球顶32的边缘呈环状延伸，以整体均匀地降低球顶32与音膜31之间的胶合应力。
在一种实施例中，参见图6及图7，弯曲部3111包括形成有容胶槽3111c的第一弯曲部3111a和围绕第一弯曲部3111a设置的第二弯曲部3111b，第一弯曲部3111a自第一折板311朝远离球顶32凸起形成，第二弯曲部3111b自第一折板311凹向球顶32形成，且第二弯曲部3111b包括与第一弯曲部3111a相接的曲面3111d，且曲面3111d位于球顶32的周侧并与球顶32间隔设置。即注入在容胶槽3111c内的胶体溢向曲面3111d和球顶32，且曲面3111d位于球顶32的周侧，因此，球顶32与曲面3111d之间存在结合力，通过提高球顶32与音膜31之间的结合力来降低球顶32与音膜31的胶合应力。
在一些具体的实施例中，沿音膜31的振动方向，第二弯曲部3111b向磁路系统20的投影与球顶32向磁路系统20的投影不重叠。
在一种的实施例中，第一弯曲部3111a的沿音膜31的振动方向的截面可呈圆弧形或矩形等，第二弯曲部33111b的沿音膜31的振动方向的截面可呈圆弧形或矩形等。
优选地，第一弯曲部3111a的沿音膜31的振动方向的截面呈圆弧形，第二弯曲部33111b的沿音膜31的振动方向的截面呈圆弧形。
在一些具体的实施例中，参见图6，第一弯曲部3111a和第二弯曲部3111b均采用圆弧形，设第一弯曲部3111a的开口宽度为d1，第二弯曲部3111b的开口宽度为d2，则第一弯曲部3111a的开口宽度与第二弯曲部3111b的开口宽度之和为d，其中，第一弯曲部3111a的开口宽度与第二弯曲部3111b的开口宽度之和d的范围为0.3mm-0.4mm；其中，第一弯曲部3111a的半径约为0.2mm，第一弯曲部3111a的开口宽度d1的范围为0.15mm-0.25mm，第二弯曲部33111b的半径约为0.1mm，第二弯曲部3111b的开口宽度d2约为0.15mm。
请参见8及图9，图8示出了音膜31与球顶32胶合连接后二者的法向拉应力，图9示出了音膜31与球顶32胶合连接后二者剪切应力，运用本技术方案，音膜31与球顶32之间的最大法向拉应力降低了33.12％，最大剪切应力降低了34.29％，即本技术方案有效降低了球顶32与音膜31的分离概率。
参见图6及图7，第一折板311还包括自第一弯曲部3111a的远离第二弯曲部33111b的一侧朝向远离折环312延伸的平板部3112，胶层37延伸至平板部3112与球顶32之间以实现二者的胶合连接。该平板部3112与弯曲部3111配合，保证了球顶32与音膜31之间的相对稳定性，以实现通过球顶32补强音膜31。
其中，平板部3112通过弯曲部311与折环312连接，折环312沿音膜31的振动方向向靠近磁路系统20凸出，以保证发声单体100的声学性能。
在一些具体的实施例中，平板部3112呈环状结构，既保证通过平板部加强了音膜31与球顶32的连接，也节省了音膜31的材料。
在一些具体的实施例中，音膜31还包括折环312，该折环312围绕第二弯曲部3111b设置，以将第一折板311与球顶32的胶合面积最大化，提高结合力，降低内应力。
此外，参见图3，音膜31还包括围绕折环312的第二折板313，第二折板313与盆架10固定连接，以实现音膜31与盆架10的连接；其中，第二折板313上开设有定位缺口3131，盆架10上设置有与定位缺口3131相适配的定位柱11。
参见图2及图5，在本申请中，振动系统30还包括位于球顶32下方的音圈33、位于音圈33与球顶32之间的音圈骨架34、与音圈33电性连接的柔性电路板36以及与音膜31相对设置并固定在柔性电路板36上的下音膜35。
其中，音圈33用于驱动球顶32以带动音膜31振动发声，音圈骨架34具有用于连通音圈33的内外两侧的开口341，通过该开口341可以平衡音圈33的内外气压。
在本申请中，磁路系统20包括主磁钢21、与主磁钢21形成磁间隙的副磁钢22以及贴设在主磁钢21上的极芯23，其中，音圈33至少部分插设于磁间隙中。
具体地，磁路系统20驱动音圈33在磁间隙中运动，进而通过环骨架34带动球顶32和音膜31振动发声，同时通过下音膜35的配合改善发声单体的声学效果。
本申请还提供了一种扬声器箱，该扬声器箱包括上述的发声单体100，因此，该扬声器箱内的球顶32与音膜31之间的稳定较强，以防止扬声器箱因球顶32与音膜31分离而失效。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种发声单体，所述发声单体包括盆架、固定于所述盆架上的磁路系统和经所述磁路系统驱动并振动发声的振动系统，其特征在于，所述振动系统包括固定于所述盆架的音膜，所述音膜包括第一折板以及围绕所述第一折板设置的折环；所述振动系统还包括贴设固定于所述第一折板靠近所述磁路系统一侧的球顶，所述第一折板具有弯曲部，所述弯曲部形成有开口朝向所述球顶的用于收容胶体的容胶槽，所述球顶的边缘位于所述容胶槽的沿所述音膜的振动方向上的正投影内。
  2. 根据权利要求1所述的发声单体，其特征在于，所述弯曲部沿所述球顶的边缘呈环状延伸。
  3. 根据权利要求2所述的发声单体，其特征在于：所述弯曲部包括形成有所述容胶槽的第一弯曲部和围绕所述第一弯曲部设置的第二弯曲部，所述第一弯曲部自所述第一折板朝远离所述球顶凸起形成，所述第二弯曲部自所述第一折板凹向所述球顶形成，所述第二弯曲部包括与所述第一弯曲部相接的曲面，且所述曲面位于球顶的周侧并与所述球顶间隔设置。
  4. 根据权利要求3所述的发声单体，其特征在于：沿所述音膜的振动方向，所述第二弯曲部向所述磁路系统的投影与所述球顶向所述磁路系统的投影不重叠。
  5. 根据权利要求3所述的发声单体，其特征在于，所述第一弯曲部的沿所述音膜的振动方向的截面呈圆弧形，所述第二弯曲部的沿所述音膜的振动方向的截面呈圆弧形。
  6. 根据权利要求3所述的发声单体，其特征在于，所述第一折板还包括自所述第一弯曲部的远离所述第二弯曲部的一侧朝远离所述折环延伸的平板部，所述平板部与所述球顶胶合连接。
  7. 根据权利要求6所述的发声单体，其特征在于，所述平板部通过所述弯曲部与所述折环连接，所述折环沿所述音膜的振动方向向靠近所述磁路系统凸出。
  8. 根据权利要求3所述的发声单体，其特征在于，所述第一弯曲部的开口宽度与所述第二弯曲部的开口宽度之和为0.3mm-0.4mm。
  9. 根据权利要求8所述的发声单体，其特征在于，所述第一弯曲部的开口宽度为0.15mm-0.25mm。
  10. 根据权利要求1所述的发声单体，其特征在于，所述振动系统还包括用于驱动所述球顶振动的音圈和抵接在所述音圈与所述球顶之间的音圈骨架，所述音圈骨架具有用于连通所述音圈的内外两侧的开口。
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