WO2020140173A1 - Loudspeaker - Google Patents

Loudspeaker Download PDF

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Publication number
WO2020140173A1
WO2020140173A1 PCT/CN2018/125940 CN2018125940W WO2020140173A1 WO 2020140173 A1 WO2020140173 A1 WO 2020140173A1 CN 2018125940 W CN2018125940 W CN 2018125940W WO 2020140173 A1 WO2020140173 A1 WO 2020140173A1
Authority
WO
WIPO (PCT)
Prior art keywords
end point
connection
lower diaphragm
diaphragm
clamping
Prior art date
Application number
PCT/CN2018/125940
Other languages
French (fr)
Chinese (zh)
Inventor
梁平
赵彬
Original Assignee
瑞声声学科技(深圳)有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 瑞声声学科技(深圳)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Priority to PCT/CN2018/125940 priority Critical patent/WO2020140173A1/en
Publication of WO2020140173A1 publication Critical patent/WO2020140173A1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02Details
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06Loudspeakers

Definitions

  • the invention belongs to the technical field of electroacoustic converters, and particularly relates to a speaker.
  • the technical problem to be solved by the embodiments of the present invention is to provide a speaker, which aims to solve the problem that the lower diaphragm in the speaker in the prior art is likely to cause the folding portion of the lower diaphragm to collide with the flexible circuit board during the vibration process, resulting in pure sound of the product Bad question.
  • the embodiment of the present invention is implemented in this way, providing a speaker including a basin holder with a storage space, and a vibration system, a magnetic circuit system and a flexible circuit board stored in the storage space, the vibration system includes a An upper diaphragm at the upper end of the basin frame, a voice coil driving the upper diaphragm to vibrate and sound, and a lower diaphragm connected to the voice coil and fixed at the lower end of the basin frame, the lower diaphragm including the voice coil A connected first clamping part, a second clamping part fixedly connected with the basin frame, and a folding ring part connecting the first clamping part and the second clamping part, the flexible circuit board Sandwiched between the voice coil and the first clamping portion, the folding ring portion includes a first connecting portion connected to the first clamping portion, and a first connecting portion connected to the second clamping portion Two connecting portions and an intermediate portion connecting the first connecting portion and the second connecting portion, the first connecting portion includes a first end point connected to the first clamping portion and
  • the second distance is 0.
  • connection portion has a flat structure.
  • connection part is an arc-shaped structure.
  • the flexible circuit board includes a first fixing portion, a second fixing portion, and an elastic connection portion, the first fixing portion is connected to the basin frame, and the second fixing portion is connected to the voice coil.
  • the elastic connecting portion is connected between the first fixing portion and the second fixing portion, and an orthographic projection of the elastic connecting portion in the vibration direction is spaced from the second connecting portion.
  • the materials of the upper diaphragm and the lower diaphragm are polymer materials.
  • the polymer material is silica gel, rubber, PEEK or TPU.
  • the embodiment of the present invention has the beneficial effect that the present invention sets the vertical distance between the tangent line of the third end point on the lower diaphragm along the vibration direction and the tangent line of the fourth end point along the vibration direction to be less than
  • the vertical distance between the tangent of the one end point in the vibration direction and the tangent of the second end point in the vibration direction is helpful to improve the vibration space of the lower diaphragm, so that the second connection portion can be connected to the flexible circuit during the vibration of the lower diaphragm Keep a certain distance between the boards to effectively avoid the collision of the folded ring of the lower diaphragm and the flexible circuit board, which can improve the pure sound of the speaker, ensure the stability of the speaker, and improve the performance of the product.
  • FIG. 1 is a schematic structural diagram of a speaker provided by an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of the exploded structure of FIG. 1;
  • FIG. 3 is a schematic sectional view of FIG. 1;
  • FIG. 4 is an enlarged schematic diagram of the area A in FIG. 3.
  • the speaker includes a fixing system 1 having a storage space, a vibration system 2 and a flexible circuit board 21 stored in the storage space.
  • the fixing system 1 includes a pot holder 11 having a storage space, a fixing member 15 fixedly connected to the pot holder 11, and a magnetic circuit system 10 stored in the storage space of the pot holder 11.
  • the magnetic circuit system 10 includes a magnetically conductive yoke 12 fixed to the basin frame 11, a main magnetic steel 13 provided at the middle of the magnetically conductive yoke 12, and a magnetic gap 18 disposed on both sides of the magnetically conductive yoke 12 and forming a magnetic gap 18 with the main magnetic steel 13 Vice magnet 14.
  • the vibration system 2 includes an upper diaphragm 22 fixed to the upper end of the basin frame 11, a voice coil 24 that drives the upper diaphragm 22 to vibrate and sound, a flexible circuit board 21 fixed to the lower end of the voice coil 24, and an upper diaphragm fixed to the upper end of the voice coil 24 22 and the lower diaphragm 23 fixed to the lower end of the flexible circuit board 21, the voice coil 24 is placed in the magnetic gap 18, the inner upper end of the flexible circuit board 21 is fixed to the lower end of the voice coil 24, and the outer upper end of the flexible circuit board 21 is fixed to the basin On shelf 11.
  • the lower diaphragm 23 includes a first clamping portion 233 connected to the voice coil 24, a second clamping portion 232 fixedly connected to the basin holder 11, and a fold connecting the first clamping portion 233 and the second clamping portion 232
  • the ring portion 231, the flexible circuit board 21 is interposed between the voice coil 24 and the first clamping portion 233, and the folded ring portion 231 includes a first connecting portion 2311 connected to the first clamping portion 233 and a second clamping portion A second connection portion 2313 connected by 232 and an intermediate portion 2312 connecting the first connection portion 2311 and the second connection portion 2313.
  • the first connection portion 2311 includes a first end point 2314 connected to the first clamping portion 233 and a The second end 2315 connected to the middle part 2312.
  • the second connection part 2313 includes a third end 2316 connected to the second clamping part 232 and a fourth end 2317 connected to the middle part 2312.
  • the first end 2314 is along the vibration direction
  • the vertical distance between the tangent line and the tangent line of the second endpoint 2315 along the vibration direction is the first interval
  • the vertical distance between the tangent line of the third endpoint 2316 along the vibration direction and the tangent line along the vibration direction of the fourth endpoint 2317 is the second interval
  • the second pitch is smaller than the first pitch.
  • the voice coil 24 drives the upper diaphragm 22 to vibrate, and the flexible circuit board 21 follows the lower diaphragm 23 to vibrate.
  • the vibration space of the lower diaphragm 23 is improved, so that there is a larger space between the folded portion of the lower diaphragm 23 and the flexible circuit board 21, so that the lower diaphragm 23 is in the process of vibration,
  • the second connecting portion 2313 can maintain a certain distance from the flexible circuit board 21, effectively avoiding the collision of the folded portion 231 of the lower diaphragm 23 and the flexible circuit board 21, thereby improving the pure sound of the speaker and ensuring the stability of the speaker.
  • the second pitch is 0, that is, the second connection portion 2313 and the intermediate portion 2312 form an angle of 90 degrees.
  • the second connection portion 2313 has a flat plate structure, and the first connection portion 2311 has an arc structure.
  • the first connection portion 2311 and the second connection portion 2313 may also be structures of other shapes, and the angle between the middle portion 2312 and the second connection portion 2313 may be an obtuse angle, and the specific angle is adjusted according to actual needs.
  • the structure of the diaphragm 23 is adjusted.
  • the flexible circuit board 21 includes the first fixing portion 211, the second fixing portion 212, and the elastic connecting portion 213.
  • the upper end of the first fixing portion 211 is fixedly connected to the basin 11 and the lower end of the first fixing portion 211 is
  • the second clamping portion 232 of the diaphragm 23 is fixedly connected, the upper end of the second fixing portion 212 is connected to the voice coil 24, the lower end of the second fixing portion 212 is fixedly connected to the first clamping portion 233 of the lower diaphragm 23, and is elastically connected
  • the portion 213 is connected between the first fixing portion 211 and the second fixing portion 212, and the orthographic projection of the elastic connection portion 213 in the vibration direction is spaced from the second connection portion 2313.
  • the fixing system 1 further includes a pole core 17, which is fixed to the side of the main magnetic steel 13 away from the magnetic yoke 12.
  • the magnetic yoke 12, the fixing member 15 and the pole core 17 are made of magnetically conductive material
  • the material of the upper diaphragm 22 and the lower diaphragm 23 is a polymer material
  • the polymer material is silica gel, rubber, PEEK (polyetheretherketone Polyetheretherketone) or TPU (Thermoplastic polyurethanes (thermoplastic polyurethane elastomer rubber), etc.
  • the shape of the voice coil 24 is a racetrack shape, or other ring-shaped structures may be used.
  • the voice coil 24 drives the upper diaphragm 22, the upper diaphragm 22 is fixed on the basin frame 11, and the upper diaphragm 22 is also fixed There is a reinforcing plate 16, which can be provided on the side of the upper diaphragm 22 facing the main magnetic steel 13, or on the side of the upper diaphragm 22 facing away from the main magnetic steel 13, the reinforcing plate 16 can raise the upper diaphragm 22 Stability.
  • the speaker of the present invention improves the shape and structure of the lower diaphragm 23 so that the tangent of the third endpoint 2316 on the lower diaphragm 23 along the vibration direction and the tangent of the fourth endpoint 2317 along the vibration direction
  • the vertical distance of is set to be smaller than the vertical distance between the tangent of the first endpoint 2314 in the vibration direction and the tangent of the second endpoint 1315 in the vibration direction, which is beneficial to improve the vibration space of the lower diaphragm 23, so that the lower diaphragm 23 vibrates
  • the second connecting portion 2313 can maintain a certain distance from the flexible circuit board 21, effectively avoiding the collision of the folded portion 231 of the lower diaphragm 23 and the flexible circuit board 21, thereby improving the pure sound of the speaker and ensuring the speaker Stability, improve product performance.

Landscapes

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

Abstract

The present invention is applicable to the field of electroacoustic transducers, and provides a loudspeaker. The loudspeaker comprises a basket (11), a vibration system (2), a magnetic circuit system (10), and a flexible printed circuit board (21), wherein the vibration system (2) comprises an upper diaphragm (22), a voice coil (24), and a lower diaphragm (23). The lower diaphragm (23) comprises a first clamping part (233), a second clamping part (232), and a surround part (231); the flexible printed circuit board (21) is clamped between the voice coil (24) and the first clamping part (233); the surround part (231) comprises a first connecting part (2311), a second connecting part (2313), and a middle part (2312); a vertical interval between the tangent line, in the vibrating direction, of a first end point (2314) on the first connecting part (2311) and the tangent line, in the vibrating direction, of a second end point (2315) on the first connecting part is a first interval, a vertical interval between the tangent line, in the vibrating direction, of a third end point (2316) and the the tangent line, in the vibrating direction, of a fourth end point (2317) is a second interval, and the second interval is less than the first interval. According to the loudspeaker of the present invention, the lower diaphragm (23) structure improves a vibrating space of the lower diaphragm (23), preventing the surround part (231) of the lower diaphragm (23) from colliding with the flexible printed circuit board (21) in the vibrating process of the lower diaphragm (23), thereby improving the degree of pure tone of the loudspeaker, and enhancing the product performance.

Description

一种扬声器A speaker 技术领域Technical field
本发明属于电声转换器技术领域,尤其涉及一种扬声器。The invention belongs to the technical field of electroacoustic converters, and particularly relates to a speaker.
背景技术Background technique
随着科技的快速发展,扬声器的普及率越来越高,人们对扬声器的要求不仅仅限于视频音频的播放,更对扬声器播放声音的音质和可靠性有着更高的要求。而扬声器的扬声器直接关系到播放声音音质好坏和产品的稳定。With the rapid development of science and technology, the popularity of speakers is getting higher and higher. People's requirements for speakers are not only limited to the playback of video and audio, but also have higher requirements for the sound quality and reliability of the sound played by the speakers. The speaker is directly related to the sound quality of the playback sound and the stability of the product.
在现有技术中,扬声器的下振膜与柔性电路板胶合后,在下振膜振动时,由于下振膜的折环部外侧为曲面过渡,对于部分产品而言,会出现下振膜折环部外侧与柔性电路板之间的空间不足,下振膜在振动过程中容易导致下振膜的折环部外侧与柔性电路板撞击,导致扬声器纯音不良以及产品性能等出现异常。In the prior art, after the lower diaphragm of the speaker is glued to the flexible circuit board, when the lower diaphragm vibrates, because the outer side of the folded portion of the lower diaphragm is a curved transition, for some products, the lower diaphragm folded ring may appear There is not enough space between the outside of the part and the flexible circuit board. During the vibration process, the lower diaphragm is likely to cause the outside of the folded part of the lower diaphragm to collide with the flexible circuit board, resulting in poor pure sound of the speaker and abnormal performance of the product.
技术问题technical problem
本发明实施例所要解决的技术问题在于提供一种扬声器,旨在解决现有技术中扬声器中的下振膜在振动过程中容易导致下振膜的折环部与柔性电路板撞击而导致产品纯音不良的问题。The technical problem to be solved by the embodiments of the present invention is to provide a speaker, which aims to solve the problem that the lower diaphragm in the speaker in the prior art is likely to cause the folding portion of the lower diaphragm to collide with the flexible circuit board during the vibration process, resulting in pure sound of the product Bad question.
技术解决方案Technical solution
本发明实施例是这样实现的,提供一种扬声器,包括具有收容空间的盆架以及收容于所述收容空间内的振动系统、磁路系统和柔性电路板,所述振动系统包括固定于所述盆架上端的上振膜、驱动所述上振膜振动发声的音圈以及与所述音圈连接且固定于所述盆架下端的下振膜,所述下振膜包括与所述音圈连接的第一夹持部、与所述盆架固定连接的第二夹持部以及连接所述第一夹持部与所述第二夹持部之间的折环部,所述柔性电路板夹设于所述音圈与所述第一夹持部之间,所述折环部包括与所述第一夹持部连接的第一连接部、与所述第二夹持部连接的第二连接部以及连接所述第一连接部和所述第二连接部的中间部,所述第一连接部包括与所述第一夹持部连接的第一端点和与所述中间部连接的第二端点,所述第二连接部包括与所述第二夹持部连接的第三端点和与所述中间部连接的第四端点,所述第一端点沿振动方向的切线与所述第二端点沿振动方向的切线之间的垂直间距为第一间距,所述第三端点沿振动方向的切线与所述第四端点沿振动方向的切线之间的垂直间距为第二间距,所述第二间距小于所述第一间距。The embodiment of the present invention is implemented in this way, providing a speaker including a basin holder with a storage space, and a vibration system, a magnetic circuit system and a flexible circuit board stored in the storage space, the vibration system includes a An upper diaphragm at the upper end of the basin frame, a voice coil driving the upper diaphragm to vibrate and sound, and a lower diaphragm connected to the voice coil and fixed at the lower end of the basin frame, the lower diaphragm including the voice coil A connected first clamping part, a second clamping part fixedly connected with the basin frame, and a folding ring part connecting the first clamping part and the second clamping part, the flexible circuit board Sandwiched between the voice coil and the first clamping portion, the folding ring portion includes a first connecting portion connected to the first clamping portion, and a first connecting portion connected to the second clamping portion Two connecting portions and an intermediate portion connecting the first connecting portion and the second connecting portion, the first connecting portion includes a first end point connected to the first clamping portion and connected to the intermediate portion The second end point, the second connecting portion includes a third end point connected to the second clamping portion and a fourth end point connected to the middle portion, the tangent of the first end point along the vibration direction is The vertical distance between the tangent line of the second end point along the vibration direction is the first distance, and the vertical distance between the tangent line of the third end point along the vibration direction and the tangent line of the fourth end point along the vibration direction is the second distance, The second pitch is smaller than the first pitch.
进一步地,所述第二间距为0。Further, the second distance is 0.
进一步地,所述第二连接部为平板状结构。Further, the second connection portion has a flat structure.
进一步地,所述第一连接部为弧形结构。Further, the first connection part is an arc-shaped structure.
进一步地,所述柔性电路板包括第一固定部、第二固定部以及弹性连接部,所述第一固定部与所述盆架连接,所述第二固定部与所述音圈连接,所述弹性连接部连接在所述第一固定部和所述第二固定部之间,所述弹性连接部沿振动方向的正投影与所述第二连接部相互间隔。Further, the flexible circuit board includes a first fixing portion, a second fixing portion, and an elastic connection portion, the first fixing portion is connected to the basin frame, and the second fixing portion is connected to the voice coil. The elastic connecting portion is connected between the first fixing portion and the second fixing portion, and an orthographic projection of the elastic connecting portion in the vibration direction is spaced from the second connecting portion.
进一步地,所述上振膜和所述下振膜的材料为高分子材料。Further, the materials of the upper diaphragm and the lower diaphragm are polymer materials.
进一步地,所述高分子材料为硅胶、橡胶、PEEK或TPU。Further, the polymer material is silica gel, rubber, PEEK or TPU.
有益效果Beneficial effect
本发明实施例与现有技术相比,有益效果在于:本发明通过将下振膜上的第三端点沿振动方向的切线与第四端点沿振动方向的切线之间的垂直间距设置成小于第一端点沿振动方向的切线与第二端点沿振动方向的切线之间的垂直间距,有利于改善下振膜的振动空间,使得下振膜在振动过程中,第二连接部能够与柔性电路板之间保持一定距离,有效避免下振膜的折环部与柔性电路板发生碰撞,从而能够改善扬声器纯音度,保证了扬声器的稳定性,提高产品性能。Compared with the prior art, the embodiment of the present invention has the beneficial effect that the present invention sets the vertical distance between the tangent line of the third end point on the lower diaphragm along the vibration direction and the tangent line of the fourth end point along the vibration direction to be less than The vertical distance between the tangent of the one end point in the vibration direction and the tangent of the second end point in the vibration direction is helpful to improve the vibration space of the lower diaphragm, so that the second connection portion can be connected to the flexible circuit during the vibration of the lower diaphragm Keep a certain distance between the boards to effectively avoid the collision of the folded ring of the lower diaphragm and the flexible circuit board, which can improve the pure sound of the speaker, ensure the stability of the speaker, and improve the performance of the product.
附图说明BRIEF DESCRIPTION
图1是本发明实施例提供的一种扬声器结构示意图;1 is a schematic structural diagram of a speaker provided by an embodiment of the present invention;
图2是图1的分解结构示意图;2 is a schematic diagram of the exploded structure of FIG. 1;
图3是图1的剖视结构示意图;FIG. 3 is a schematic sectional view of FIG. 1;
图4是图3中的A区域放大结构示意图。FIG. 4 is an enlarged schematic diagram of the area A in FIG. 3.
本发明的实施方式Embodiments of the invention
在此处键入本发明的实施方式描述段落。Type the paragraph describing the embodiment of the invention here.
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合附图及实施例,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。In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
如图1至图4所示,是本发明实施例提供的一种扬声器。该扬声器包括具有收纳空间的固定系统1以及收容于收容空间内的振动系统2和柔性电路板21。固定系统1包括具有收容空间的盆架11、与盆架11固定连接的固定件15以及收容于盆架11的收容空间内的磁路系统10。磁路系统10包括固定于盆架11的导磁轭12、设于导磁轭12中部的主磁钢13及设置在导磁轭12两侧并与主磁钢13之间形成磁间隙18的副磁钢14。振动系统2包括固定于盆架11上端的上振膜22、驱动上振膜22振动发声的音圈24、固定于音圈24下端的柔性电路板21、固定于音圈24上端的上振膜22以及固定于柔性电路板21下端的下振膜23,音圈24置于磁间隙18中,柔性电路板21的内侧上端固定在音圈24的下端,柔性电路板21的外侧上端固定在盆架11上。As shown in FIGS. 1 to 4, it is a speaker provided by an embodiment of the present invention. The speaker includes a fixing system 1 having a storage space, a vibration system 2 and a flexible circuit board 21 stored in the storage space. The fixing system 1 includes a pot holder 11 having a storage space, a fixing member 15 fixedly connected to the pot holder 11, and a magnetic circuit system 10 stored in the storage space of the pot holder 11. The magnetic circuit system 10 includes a magnetically conductive yoke 12 fixed to the basin frame 11, a main magnetic steel 13 provided at the middle of the magnetically conductive yoke 12, and a magnetic gap 18 disposed on both sides of the magnetically conductive yoke 12 and forming a magnetic gap 18 with the main magnetic steel 13 Vice magnet 14. The vibration system 2 includes an upper diaphragm 22 fixed to the upper end of the basin frame 11, a voice coil 24 that drives the upper diaphragm 22 to vibrate and sound, a flexible circuit board 21 fixed to the lower end of the voice coil 24, and an upper diaphragm fixed to the upper end of the voice coil 24 22 and the lower diaphragm 23 fixed to the lower end of the flexible circuit board 21, the voice coil 24 is placed in the magnetic gap 18, the inner upper end of the flexible circuit board 21 is fixed to the lower end of the voice coil 24, and the outer upper end of the flexible circuit board 21 is fixed to the basin On shelf 11.
下振膜23包括与音圈24连接的第一夹持部233、与盆架11固定连接的第二夹持部232以及连接第一夹持部233与第二夹持部232之间的折环部231,柔性电路板21夹设于音圈24与第一夹持部233之间,折环部231包括与第一夹持部233连接的第一连接部2311、与第二夹持部232连接的第二连接部2313以及连接第一连接部2311和第二连接部2313之间的中间部2312,第一连接部2311包括与第一夹持部233连接的第一端点2314和与中间部2312连接的第二端点2315,第二连接部2313包括与第二夹持部232连接的第三端点2316和与中间部2312连接的第四端点2317,第一端点2314沿振动方向的切线与第二端点2315沿振动方向的切线之间的垂直间距为第一间距,第三端点2316沿振动方向的切线与第四端点2317沿振动方向的切线之间的垂直间距为第二间距,第二间距小于第一间距。音圈24驱动上振膜22振动,并且柔性电路板21会跟随下振膜23振动。通过上述的下振膜23结构,改善下振膜23的振动空间,使下振膜23的折环部与柔性电路板21之间具有更大的空间,使得下振膜23在振动过程中,第二连接部2313能够与柔性电路板21之间保持一定距离,有效避免下振膜23的折环部231与柔性电路板21发生碰撞,从而能够改善扬声器纯音度,保证了扬声器的稳定性。The lower diaphragm 23 includes a first clamping portion 233 connected to the voice coil 24, a second clamping portion 232 fixedly connected to the basin holder 11, and a fold connecting the first clamping portion 233 and the second clamping portion 232 The ring portion 231, the flexible circuit board 21 is interposed between the voice coil 24 and the first clamping portion 233, and the folded ring portion 231 includes a first connecting portion 2311 connected to the first clamping portion 233 and a second clamping portion A second connection portion 2313 connected by 232 and an intermediate portion 2312 connecting the first connection portion 2311 and the second connection portion 2313. The first connection portion 2311 includes a first end point 2314 connected to the first clamping portion 233 and a The second end 2315 connected to the middle part 2312. The second connection part 2313 includes a third end 2316 connected to the second clamping part 232 and a fourth end 2317 connected to the middle part 2312. The first end 2314 is along the vibration direction The vertical distance between the tangent line and the tangent line of the second endpoint 2315 along the vibration direction is the first interval, and the vertical distance between the tangent line of the third endpoint 2316 along the vibration direction and the tangent line along the vibration direction of the fourth endpoint 2317 is the second interval, The second pitch is smaller than the first pitch. The voice coil 24 drives the upper diaphragm 22 to vibrate, and the flexible circuit board 21 follows the lower diaphragm 23 to vibrate. Through the structure of the lower diaphragm 23 described above, the vibration space of the lower diaphragm 23 is improved, so that there is a larger space between the folded portion of the lower diaphragm 23 and the flexible circuit board 21, so that the lower diaphragm 23 is in the process of vibration, The second connecting portion 2313 can maintain a certain distance from the flexible circuit board 21, effectively avoiding the collision of the folded portion 231 of the lower diaphragm 23 and the flexible circuit board 21, thereby improving the pure sound of the speaker and ensuring the stability of the speaker.
在本实施例中,为了使下振膜23获得不被柔性电路板21干涉的更大的振动空间,第二间距为0,即第二连接部2313与中间部2312形成90度夹角。第二连接部2313为平板结构,第一连接部2311为弧形结构。在其他实施方式中,第一连接部2311与第二连接部2313也可为其他形状的结构,中间部2312与第二连接部2313之间的夹角可为钝角,具体角度根据实际需求对下振膜23的结构做出调整。In this embodiment, in order to allow the lower diaphragm 23 to obtain a larger vibration space that is not interfered by the flexible circuit board 21, the second pitch is 0, that is, the second connection portion 2313 and the intermediate portion 2312 form an angle of 90 degrees. The second connection portion 2313 has a flat plate structure, and the first connection portion 2311 has an arc structure. In other embodiments, the first connection portion 2311 and the second connection portion 2313 may also be structures of other shapes, and the angle between the middle portion 2312 and the second connection portion 2313 may be an obtuse angle, and the specific angle is adjusted according to actual needs. The structure of the diaphragm 23 is adjusted.
上述实施例中,柔性电路板21包括第一固定部211、第二固定部212以及弹性连接部213,第一固定部211的上端与盆架11固定连接,第一固定部211的下端与下振膜23的第二夹持部232固定连接,第二固定部212的上端与音圈24连接,第二固定部212的下端与下振膜23的第一夹持部233固定连接,弹性连接部213连接在第一固定部211和第二固定部212之间,并且弹性连接部213沿振动方向的正投影与第二连接部2313相互间隔。In the above embodiment, the flexible circuit board 21 includes the first fixing portion 211, the second fixing portion 212, and the elastic connecting portion 213. The upper end of the first fixing portion 211 is fixedly connected to the basin 11 and the lower end of the first fixing portion 211 is The second clamping portion 232 of the diaphragm 23 is fixedly connected, the upper end of the second fixing portion 212 is connected to the voice coil 24, the lower end of the second fixing portion 212 is fixedly connected to the first clamping portion 233 of the lower diaphragm 23, and is elastically connected The portion 213 is connected between the first fixing portion 211 and the second fixing portion 212, and the orthographic projection of the elastic connection portion 213 in the vibration direction is spaced from the second connection portion 2313.
上述实施例中,固定系统1还包括极芯17,极芯17固定于主磁钢13远离导磁轭12的一侧。其中,导磁轭12、固定件15以及极芯17均由导磁材料制成,上振膜22和下振膜23的材料为高分子材料,该高分子材料为硅胶、橡胶、PEEK(polyetheretherketone 聚醚醚酮)或TPU(Thermoplastic polyurethanes 热塑性聚氨酯弹性体橡胶)等。In the above embodiment, the fixing system 1 further includes a pole core 17, which is fixed to the side of the main magnetic steel 13 away from the magnetic yoke 12. Among them, the magnetic yoke 12, the fixing member 15 and the pole core 17 are made of magnetically conductive material, the material of the upper diaphragm 22 and the lower diaphragm 23 is a polymer material, the polymer material is silica gel, rubber, PEEK (polyetheretherketone Polyetheretherketone) or TPU (Thermoplastic polyurethanes (thermoplastic polyurethane elastomer rubber), etc.
在上述实施例中,音圈24的形状为跑道形,也可以为其他环状结构,音圈24驱动上振膜22,上振膜22固定在盆架11上,上振膜22上还固定有加强板16,加强板16可以设置在上振膜22朝向主磁钢13的一侧,也可以设置在上振膜22背离主磁钢13的一侧,加强板16可以提高上振膜22的稳定性。In the above embodiment, the shape of the voice coil 24 is a racetrack shape, or other ring-shaped structures may be used. The voice coil 24 drives the upper diaphragm 22, the upper diaphragm 22 is fixed on the basin frame 11, and the upper diaphragm 22 is also fixed There is a reinforcing plate 16, which can be provided on the side of the upper diaphragm 22 facing the main magnetic steel 13, or on the side of the upper diaphragm 22 facing away from the main magnetic steel 13, the reinforcing plate 16 can raise the upper diaphragm 22 Stability.
综上所述,本发明的扬声器通过对下振膜23的形状结构进行改善,以将下振膜23上的第三端点2316沿振动方向的切线与第四端点2317沿振动方向的切线之间的垂直间距设置成小于第一端点2314沿振动方向的切线与第二端点1315沿振动方向的切线之间的垂直间距,有利于改善下振膜23的振动空间,使得下振膜23在振动过程中,第二连接部2313能够与柔性电路板21之间保持一定距离,有效避免下振膜23的折环部231与柔性电路板21发生碰撞,从而能够改善扬声器纯音度,保证了扬声器的稳定性,提高产品性能。In summary, the speaker of the present invention improves the shape and structure of the lower diaphragm 23 so that the tangent of the third endpoint 2316 on the lower diaphragm 23 along the vibration direction and the tangent of the fourth endpoint 2317 along the vibration direction The vertical distance of is set to be smaller than the vertical distance between the tangent of the first endpoint 2314 in the vibration direction and the tangent of the second endpoint 1315 in the vibration direction, which is beneficial to improve the vibration space of the lower diaphragm 23, so that the lower diaphragm 23 vibrates During the process, the second connecting portion 2313 can maintain a certain distance from the flexible circuit board 21, effectively avoiding the collision of the folded portion 231 of the lower diaphragm 23 and the flexible circuit board 21, thereby improving the pure sound of the speaker and ensuring the speaker Stability, improve product performance.
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention should be included in the protection of the present invention Within range.

Claims (7)

  1. 一种扬声器,包括具有收容空间的盆架以及收容于所述收容空间内的振动系统、磁路系统和柔性电路板,所述振动系统包括固定于所述盆架上端的上振膜、驱动所述上振膜振动发声的音圈以及与所述音圈连接且固定于所述盆架下端的下振膜,其特征在于,所述下振膜包括与所述音圈连接的第一夹持部、与所述盆架固定连接的第二夹持部以及连接所述第一夹持部与所述第二夹持部之间的折环部,所述柔性电路板夹设于所述音圈与所述第一夹持部之间,所述折环部包括与所述第一夹持部连接的第一连接部、与所述第二夹持部连接的第二连接部以及连接所述第一连接部和所述第二连接部的中间部,所述第一连接部包括与所述第一夹持部连接的第一端点和与所述中间部连接的第二端点,所述第二连接部包括与所述第二夹持部连接的第三端点和与所述中间部连接的第四端点,所述第一端点沿振动方向的切线与所述第二端点沿振动方向的切线之间的垂直间距为第一间距,所述第三端点沿振动方向的切线与所述第四端点沿振动方向的切线之间的垂直间距为第二间距,所述第二间距小于所述第一间距。A loudspeaker includes a basin holder with an accommodation space, and a vibration system, a magnetic circuit system and a flexible circuit board accommodated in the accommodation space. The vibration system includes an upper diaphragm fixed to the upper end of the basin holder and a driving station A voice coil that vibrates and sounds from the upper diaphragm and a lower diaphragm connected to the voice coil and fixed to the lower end of the basin frame, characterized in that the lower diaphragm includes a first clamp connected to the voice coil Part, a second clamping part fixedly connected to the basin holder, and a folding part connecting the first clamping part and the second clamping part, the flexible circuit board is clamped on the sound Between the ring and the first clamping portion, the folded ring portion includes a first connection portion connected to the first clamping portion, a second connection portion connected to the second clamping portion, and a connection place An intermediate part of the first connection part and the second connection part, the first connection part includes a first end point connected to the first clamping part and a second end point connected to the middle part, so The second connection part includes a third end point connected to the second clamping part and a fourth end point connected to the middle part, the tangent of the first end point along the vibration direction and the second end point vibrate The vertical spacing between the tangents in the direction is the first spacing, and the vertical spacing between the tangent of the third endpoint along the vibration direction and the tangent along the vibration direction of the fourth endpoint is the second spacing, and the second spacing is less than The first pitch.
  2. 如权利要求1所述的扬声器,其特征在于,所述第二间距为0。The speaker according to claim 1, wherein the second pitch is 0.
  3. 如权利要求1所述的扬声器,其特征在于,所述第二连接部为平板状结构。The speaker according to claim 1, wherein the second connecting portion has a flat structure.
  4. 如权利要求1所述的扬声器,其特征在于,所述第一连接部为弧形结构。The loudspeaker according to claim 1, wherein the first connecting portion has an arc structure.
  5. 如权利要求1至4中任意一项所述的扬声器,其特征在于,所述柔性电路板包括第一固定部、第二固定部以及弹性连接部,所述第一固定部与所述盆架连接,所述第二固定部与所述音圈连接,所述弹性连接部连接在所述第一固定部和所述第二固定部之间,所述弹性连接部沿振动方向的正投影与所述第二连接部相互间隔。The speaker according to any one of claims 1 to 4, wherein the flexible circuit board includes a first fixing portion, a second fixing portion, and an elastic connection portion, the first fixing portion and the basin stand Connection, the second fixing portion is connected to the voice coil, the elastic connection portion is connected between the first fixing portion and the second fixing portion, the orthographic projection of the elastic connection portion along the vibration direction is The second connection parts are spaced apart from each other.
  6. 如权利要求1所述的扬声器,其特征在于,所述上振膜和所述下振膜的材料为高分子材料。The speaker according to claim 1, wherein the materials of the upper diaphragm and the lower diaphragm are polymer materials.
  7. 如权利要求5所述的扬声器,其特征在于,所述高分子材料为硅胶、橡胶、PEEK或TPU。The speaker according to claim 5, wherein the polymer material is silicone, rubber, PEEK or TPU.
PCT/CN2018/125940 2018-12-30 2018-12-30 Loudspeaker WO2020140173A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012093058A1 (en) * 2011-01-04 2012-07-12 Knowles Electronics Asia Pte. Ltd. Electroacoustic transducer
CN206923033U (en) * 2017-06-20 2018-01-23 瑞声科技(新加坡)有限公司 Loudspeaker and electronic equipment
CN207070321U (en) * 2017-06-30 2018-03-02 歌尔科技有限公司 Loudspeaker monomer and electronic equipment
CN207251908U (en) * 2017-08-22 2018-04-17 瑞声科技(新加坡)有限公司 Loudspeaker and electronic equipment
CN108966095A (en) * 2018-08-07 2018-12-07 张永春 Loudspeaker unit and speaker unit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012093058A1 (en) * 2011-01-04 2012-07-12 Knowles Electronics Asia Pte. Ltd. Electroacoustic transducer
CN206923033U (en) * 2017-06-20 2018-01-23 瑞声科技(新加坡)有限公司 Loudspeaker and electronic equipment
CN207070321U (en) * 2017-06-30 2018-03-02 歌尔科技有限公司 Loudspeaker monomer and electronic equipment
CN207251908U (en) * 2017-08-22 2018-04-17 瑞声科技(新加坡)有限公司 Loudspeaker and electronic equipment
CN108966095A (en) * 2018-08-07 2018-12-07 张永春 Loudspeaker unit and speaker unit

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