WO2022007174A1 - 发声器件 - Google Patents

发声器件 Download PDF

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Publication number
WO2022007174A1
WO2022007174A1 PCT/CN2020/114317 CN2020114317W WO2022007174A1 WO 2022007174 A1 WO2022007174 A1 WO 2022007174A1 CN 2020114317 W CN2020114317 W CN 2020114317W WO 2022007174 A1 WO2022007174 A1 WO 2022007174A1
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WO
WIPO (PCT)
Prior art keywords
diaphragm
magnetic
voice coil
fixed
sound
Prior art date
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PCT/CN2020/114317
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English (en)
French (fr)
Inventor
肖波
令狐荣林
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)有限公司
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Application filed by 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022007174A1 publication Critical patent/WO2022007174A1/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the utility model relates to the field of electro-acoustic conversion, in particular to a sound-emitting device used in portable electronic products.
  • sound-emitting devices are mainly used to convert electrical signals into sound signals.
  • the sound-generating device of the related art includes a basin frame, a vibration system fixed on the basin frame, and a magnetic circuit system with a magnetic gap.
  • the magnetic gap is used to drive the voice coil of the diaphragm to vibrate.
  • the single diaphragm structure makes the vibration performance of the diaphragm reach the limit, thereby limiting the sensitivity of the sound-emitting device; and the single diaphragm structure
  • the sound-emitting device is used in the terminal product, there is a phenomenon of invalid vibration of the terminal product caused by the vibration of the diaphragm, and the user experience effect is not good.
  • the purpose of the utility model is to provide a sound-emitting device with high sensitivity and good user experience effect.
  • the utility model provides a kind of sound device which comprises:
  • the first vibration system includes a first diaphragm fixed on the basin frame and a first voice coil that drives the first diaphragm to vibrate and sound;
  • a magnetic circuit system the magnetic circuit system is fixed on the basin frame, a first magnetic gap is provided on the side of the magnetic circuit system close to the first diaphragm, and the magnetic circuit system is far away from the first diaphragm
  • a second magnetic gap is provided on one side of the device; the first voice coil is inserted in the first magnetic gap;
  • the second vibration system includes a second vibration membrane supported and fixed on the side of the magnetic circuit system away from the first vibration membrane and a second voice coil that drives the second vibration membrane to vibrate and emit sound, the second voice coil is inserted in the second magnetic gap;
  • the flexible circuit board is disposed between the first diaphragm and the second diaphragm, the flexible circuit board is electrically connected to the first voice coil and the second voice coil, respectively, It is used to provide a reverse drive signal for the first voice coil and the second voice coil respectively.
  • the magnetic circuit system includes a magnetic bowl fixed on the basin frame, a first magnetic steel unit fixed on the side of the magnetic bowl close to the first diaphragm, and a first magnetic steel unit fixed on the magnetic bowl close to the first diaphragm.
  • the magnetic bowl includes an annular bottom wall, an outer side wall bent and extended from the outer periphery of the bottom wall and fixed to the basin frame, and a support located between the first diaphragm and the bottom wall a wall and an inner side wall that is bent and extended from the inner periphery of the bottom wall to the direction close to the first vibrating film, and the inner side wall is connected to the support wall;
  • the first magnetic steel unit includes a first main magnetic steel fixed on the side of the support wall close to the first diaphragm, and a first auxiliary magnetic steel arranged around the first main magnetic steel.
  • the secondary magnetic steel and the first main magnetic steel are spaced apart to form the first magnetic gap;
  • the second magnetic steel sheet includes a second main magnetic steel fixed on the side of the support wall close to the second diaphragm, and the second main magnetic steel is spaced from the inner side wall to form the second magnetic gap .
  • the first vibration system further includes a first frame, one end of the first frame is fixed to the first diaphragm, and the other end of the first frame extends into the first magnetic gap and is connected with the first sound
  • the coil is connected to suspend the first voice coil in the first magnetic gap.
  • the first vibration system further includes an elastic conductive member fixed to the basin frame, the elastic conductive member is connected to the first frame, and the first voice coil is electrically connected to the elastic conductive member.
  • the first vibration system further includes an auxiliary diaphragm attached to the elastic conductive member.
  • the second vibration system further includes a second frame, one end of the second frame is fixed to the second diaphragm, and the other end of the second frame is fixed to the second voice coil close to the second diaphragm One end is used to suspend the second voice coil in the second magnetic gap.
  • the flexible circuit board includes a circuit board body attached to a side of the second diaphragm close to the second voice coil and a circuit board extension portion bent and extended from the circuit board body; the The second frame is attached and fixed to the side of the circuit board body away from the second diaphragm, the circuit board body is electrically connected to the second voice coil, and the circuit board extension portion is connected to the elastic conductive member Fixed and electrically connected.
  • the second vibration system further includes a washer fixed on a side of the bottom wall away from the first diaphragm, and the circuit board body is supported and fixed on the washer so that the second diaphragm is connected to the first diaphragm.
  • the bottom walls are arranged at intervals.
  • the circuit board extension portion extends to the elastic conductive member along the outer side of the washer and the outer side of the magnetic bowl in sequence.
  • the first diaphragm includes a ring-shaped first folded ring portion, a second folded ring portion surrounding the first folded ring portion and arranged at intervals, and a ring-shaped dome, the second folded ring portion.
  • the outer peripheral edge of the ring portion is fixed to the basin frame, the inner peripheral edge of the first folding ring portion is fixed to the first secondary magnet, the inner peripheral edge of the dome and the outer peripheral edge of the first folding ring portion
  • the outer peripheral edge of the spherical top is connected with the inner peripheral edge of the second folding ring, and the first frame is fixed on the spherical top;
  • the magnetic circuit system also includes a cover arranged on the first auxiliary magnetic steel The magnetic cover is attached to the inner peripheral edge of the first folding ring portion and presses the inner peripheral edge of the first folding ring to the first auxiliary magnetic steel.
  • a first magnetic gap and a second magnetic gap are arranged on opposite sides of the magnetic circuit system; the first voice coil of the first vibration system is inserted into the second magnetic gap.
  • a flexible circuit board is arranged between the first diaphragm and the second diaphragm, and the flexible circuit board is A voice coil and the second voice coil are electrically connected to provide reverse driving signals for the first voice coil and the second voice coil respectively.
  • the force factor BL value of the first voice coil and the first voice coil By setting the force factor BL value of the first voice coil and the first voice coil
  • the force factor BL of the two voice coils is the same, the resistance of the first voice coil is the same as the resistance of the second voice coil, and the driving force of the two is the same, forming a double voice coil reverse drive structure, then the first diaphragm and the second diaphragm
  • the vibration direction of the membrane is opposite, which can offset the vibration of the sound-emitting device itself, reduce the ineffective vibration of the sound-emitting device on the terminal used, and improve the user experience effect, and the double-diaphragm effectively increases the effective vibration area Sd, which effectively improves the sound production. low frequency sensitivity of the device.
  • Fig. 1 is the stereoscopic structure schematic diagram of the sound-emitting device of the present invention
  • FIG. 2 is an exploded view of a partial three-dimensional structure of the sound-emitting device of the present invention
  • FIG. 3 is a schematic structural diagram of another viewing angle of FIG. 2;
  • FIG. 4 is a cross-sectional view taken along the line A-A in FIG. 1 .
  • the present invention provides a sounding device 100 , which includes a basin frame 1 , a first vibration system 2 , a magnetic circuit system 3 , a second vibration system 4 and a flexible circuit board 5 .
  • the first vibration system 2 includes a first diaphragm 21 fixed to the basin frame 1 and a first voice coil 22 that drives the first diaphragm 21 to vibrate and produce sound.
  • the magnetic circuit system 3 is fixed to the basin frame 1, and the opposite sides of the magnetic circuit system 3 are respectively provided with a first magnetic gap 301 and a second magnetic gap 302, that is, the magnetic circuit system 3 is close to the first magnetic gap 301.
  • One side of the diaphragm 21 is provided with a first magnetic gap 301
  • the side of the magnetic circuit system away from the first diaphragm 21 is provided with a second magnetic gap 302
  • the first voice coil 22 is inserted within the first magnetic gap 301 .
  • the second vibration system 4 includes a second vibration membrane 41 supported and fixed on the side of the magnetic circuit system 3 away from the first vibration membrane 21 and a second voice coil 42 that drives the second vibration membrane 41 to vibrate and emit sound. , the second voice coil 42 is inserted into the second magnetic gap 302 .
  • the flexible circuit board 5 is electrically connected to the first voice coil 22 and the second voice coil 42 respectively, so as to provide reverse driving signals for the first voice coil 22 and the second voice coil 42 respectively .
  • the flexible circuit board 5 is disposed between the first diaphragm 21 and the second diaphragm 41 .
  • the resistance of the first voice coil 22 is the same as the resistance of the second voice coil 42
  • the first voice coil 22 is the same as the second voice coil 42.
  • the driving force of the two voice coils 42 is the same, forming a double voice coil reverse drive structure, then the vibration directions of the first diaphragm 21 and the second diaphragm 41 are opposite, which can cancel the vibration of the sounding device 100 itself, and reduce the use of the sounding device 100.
  • the ineffective vibration generated on the terminal during the terminal improves the user experience effect, and the double-diaphragm structure effectively increases the overall effective vibration area Sd of the sound-emitting device 100, which can increase the low-frequency sensitivity of the sound-emitting device 100 by 1.5-2 times, effectively The low frequency sensitivity of the sound generating device 100 is improved, and the acoustic performance is better.
  • the magnetic circuit system 3 includes a magnetic bowl 31 fixed on the basin frame 1 , and a first magnetic steel unit fixed on the side of the magnetic bowl 31 close to the first diaphragm 21 . 32 and the second magnetic steel unit 33 fixed on the side of the magnetic bowl 31 close to the second diaphragm 41 .
  • the magnetic bowl 31 includes an annular bottom wall 311 , which is bent and extended from the outer periphery of the bottom wall 311 and is fixed to the outer side wall 312 of the basin frame 1 , and is located between the first diaphragm 21 and the
  • the support wall 313 between the bottom walls 311 and the inner side wall 314 bent and extended from the inner periphery of the bottom wall 311 toward the first diaphragm 21 are connected to the support wall 313 .
  • the first magnetic steel unit 32 includes a first main magnetic steel 321 fixed on the side of the support wall 313 close to the first diaphragm 21 and a first auxiliary magnetic steel disposed around the first main magnetic steel 321 322 , the first secondary magnetic steel 322 and the first main magnetic steel 321 are spaced apart to form the first magnetic gap 301 .
  • the first magnetic gap can also be directly formed by the first main magnetic steel 321 and the outer side wall 312 of the magnetic bowl 31 spaced apart.
  • the second magnetic steel unit 33 includes a second main magnetic steel 331 fixed on the side of the support wall 313 close to the second diaphragm 41 , and the second main magnetic steel 331 is spaced from the inner side wall 314 . the second magnetic gap 302 . That is to say, the support wall 313 and the inner side wall 314 of the magnetic bowl 31 form a vacant slot structure, and the second magnetic steel unit 33 is accommodated therein and is spaced from the inner side wall 314 to form the second magnetic gap 302.
  • This structure can effectively Reducing the thickness of the sound-emitting device 100 reduces the size of the sound-emitting device 100 along the vibration direction of the first diaphragm 21 or the second diaphragm 41 thereof.
  • the structure of the second magnetic steel unit 33 can also be similar to that of the first magnetic steel unit 32 to form the second magnetic gap 302 , which is also feasible.
  • the basin frame 1, the first vibration system 2, the magnetic bowl 31 and the first magnetic steel unit 32 together form a front sounding structure; the magnetic bowl 31, the second vibration system 4 and The second magnetic steel units 33 together form a reverse sounding structure. So far, the sound-emitting device 100 with double-sided vibration and sound is formed together.
  • the first vibration system 2 further includes a first frame 23 , one end of the first frame 23 is fixed to the first diaphragm 21 , and the other end extends into the first magnetic gap 301 and connected to the first voice coil 22 for suspending the first voice coil 22 in the first magnetic gap 301 .
  • the arrangement of the first bobbin 23 can provide a design space for the first voice coil 22, making the design more flexible.
  • the first vibration system 2 further includes an elastic conductive member 24 fixed to the basin frame 1 , and the elastic conductive member 24 is connected to the first frame 23 .
  • the first voice coil 22 is electrically connected to the elastic conductive member 24, so that the elastic conductive member 24 connects the electrical signal to the lead wire of the first voice coil 22, thereby avoiding the problem of disconnection of the lead wire of the first voice coil 22.
  • the elastic conductive member 24 also effectively restrains the lateral swing of the first voice coil 22 when it vibrates, thereby improving the stability of the sound producing performance of the sound producing device 100 .
  • the first vibration system 2 further includes an auxiliary diaphragm 25 attached to the elastic conductive member 24, so as to further improve the vibration performance of the first diaphragm 21 and suppress the vibration of the first voice coil 22. sideways swing effect.
  • the first diaphragm 21 includes a ring-shaped first ring portion 211 , a second ring portion 212 surrounding the first ring portion 211 and arranged at intervals, and a ring-shaped first ring portion 211 . shaped dome 213.
  • the outer peripheral edge of the second folding ring portion 212 is fixed to the basin frame 1
  • the inner peripheral edge of the first folding ring portion 211 is fixed to the first auxiliary magnetic steel 322
  • the inner peripheral edge of the dome 213 is
  • the outer periphery of the first folded ring portion 211 is connected
  • the outer periphery of the dome 213 is connected with the inner periphery of the second folded ring
  • the first frame is fixed to the dome 213 to form a hollow
  • the double-folded ring structure diaphragm can effectively provide space for the magnetic circuit system 3 to further provide driving performance.
  • the magnetic circuit system 3 further includes a magnetic cover 323 covered on the first secondary magnetic steel 322, the magnetic cover 323 and the first folding ring portion
  • the inner periphery of 211 is attached and the inner periphery of the first folding ring 211 is pressed to the first secondary magnetic steel 322 .
  • the above structure enables the first magnetic steel unit 32 to extend through the middle of the first folded ring portion 211 to improve its driving performance, and the arrangement of the magnetic cover 323 forms a seal for the magnetic circuit system 3 to prevent the leakage of magnetic lines of force.
  • the second vibration system 4 further includes a second frame 43, one end of the second frame 43 is fixed to the second diaphragm 41, and the other end of the second frame 43 is fixed to the second voice coil 42 close to the second vibration.
  • One end of the membrane 41 is used to suspend the second voice coil 42 in the second magnetic gap 302 .
  • the arrangement of the second frame 43 effectively liberates the design freedom of the second voice coil 42 .
  • the second diaphragm 41 is fixed and supported on the side of the bottom wall 311 of the magnetic bowl 31 away from the first diaphragm 21 .
  • the The second vibration system 4 further includes a washer 44 fixed on the side of the bottom wall 311 away from the first diaphragm 21 .
  • the flexible circuit board 5 includes a circuit board body 51 attached to the side of the second diaphragm 41 close to the second voice coil 42 and a circuit board extension portion 52 bent and extended from the circuit board body 51 . .
  • the circuit board body 51 is supported and fixed to the washer 44 so that the second diaphragm 41 is spaced from the bottom wall 311 .
  • the second frame 43 is attached and fixed to the side of the circuit board body 51 away from the second diaphragm 41 , the circuit board body 51 is electrically connected with the second voice coil 42 , and the circuit board extends The portion 52 is fixed and electrically connected to the elastic conductive member 24 .
  • the flexible circuit board 5 can provide opposite driving forces for the first voice coil 22 and the second voice coil 42 at the same time.
  • the circuit board extension 52 extends to the elastic conductive member 24 along the outer side of the washer 44 and the outer side of the magnetic bowl 31 in sequence, so as to reduce the occupation of the control space of the sound-emitting device 100 as much as possible, Improve reliability.
  • a first magnetic gap and a second magnetic gap are arranged on opposite sides of the magnetic circuit system; the first voice coil of the first vibration system is inserted into the second magnetic gap.
  • a flexible circuit board is arranged between the first diaphragm and the second diaphragm, and the flexible circuit board is A voice coil and the second voice coil are electrically connected to provide reverse driving signals for the first voice coil and the second voice coil respectively.
  • the force factor BL value of the first voice coil and the first voice coil By setting the force factor BL value of the first voice coil and the first voice coil
  • the force factor BL of the two voice coils is the same, the resistance of the first voice coil is the same as the resistance of the second voice coil, and the driving force of the two is the same, forming a double voice coil reverse drive structure, then the first diaphragm and the second diaphragm
  • the vibration direction of the membrane is opposite, which can offset the vibration of the sound-emitting device itself, reduce the ineffective vibration of the sound-emitting device on the terminal used, and improve the user experience effect, and the double-diaphragm effectively increases the effective vibration area Sd, which effectively improves the sound production. low frequency sensitivity 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

本实用新型提供了一种发声器件，其包括盆架；第一振动系统，包括固定于盆架的第一振膜及第一音圈；磁路系统，固定于盆架，其靠近第一振膜的一侧设有第一磁间隙，远离第一振膜的一侧设有第二磁间隙；第一音圈插设于第一磁间隙内；第二振动系统，包括支撑固定于磁路系统远离第一振膜一侧的第二振膜以及第二音圈，第二音圈插设于第二磁间隙内；柔性电路板，设置于第一振膜与第二振膜之间，述柔性电路板分别与第一音圈及第二音圈电连接，用以为分别为第一音圈和第二音圈提供反向驱动信号。与相关技术相比，本实用新型的发声器件灵敏度高且用户体验效果好。

Description

发声器件 技术领域
本实用新型涉及电声转换领域，尤其涉及一种运用于便携式电子产品的发声器件。
 背景技术
发声器件作为手机等移动终端的主要元器件之一，其主要用于将电信号传换成声音信号。
相关技术的发声器件包括盆架、固定于所述盆架的振动系统和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用于振动发声的振膜，插设于所述磁间隙以驱动所述振膜振动的音圈。
 技术问题
然而，相关技术的发声器件中，用于振动发声的振膜为一个，单一的振膜结构使得所述振膜的振动性能达到极限，从而使得发声器件的灵敏度受到局限；而且单一的振膜结构的发声器件运用于终端产品时，存在因振膜振动引起终端产品的无效振动的现象，用户体验效果欠佳。
因此，实有必要提供一种新的发声器件解决上述技术问题。
 技术解决方案
本实用新型的目的在于提供一种灵敏度高且用户体验效果好的发声器件。
为了达到上述目的，本实用新型提供了一种发声器件其包括：
盆架；
第一振动系统，所述第一振动系统包括固定于所述盆架的第一振膜以及驱动所述第一振膜振动发声的第一音圈；
磁路系统，所述磁路系统固定于所述盆架，所述磁路系统靠近所述第一振膜的一侧设有第一磁间隙，所述磁路系统远离所述第一振膜的一侧设有第二磁间隙；所述第一音圈插设于所述第一磁间隙内；
第二振动系统，所述第二振动系统包括支撑固定于所述磁路系统远离所述第一振膜一侧的第二振膜以及驱动所述第二振膜振动发声的第二音圈，所述第二音圈插设于所述第二磁间隙内；以及，
柔性电路板，所述柔性电路板设置于所述第一振膜与所述第二振膜之间，所述柔性电路板分别与所述第一音圈及所述第二音圈电连接，用以为分别为所述第一音圈和所述第二音圈提供反向驱动信号。
优选的，所述磁路系统包括固定于所述盆架的磁碗、固定于所述磁碗靠近所述第一振膜一侧的第一磁钢单元以及固定于所述磁碗靠近所述第二振膜一侧的第二磁钢单元；
所述磁碗包括呈环状的底壁、由所述底壁的外周缘弯折延伸并固定于所述盆架的外侧壁、位于所述第一振膜与所述底壁之间的支撑壁以及由所述底壁的内周缘向靠近所述第一振膜方向弯折延伸的内侧壁，所述内侧壁与所述支撑壁连接；
所述第一磁钢单元包括固定于所述支撑壁靠近所述第一振膜一侧的第一主磁钢和环绕所述第一主磁钢设置的第一副磁钢，所述第一副磁磁钢与所述第一主磁钢间隔形成所述第一磁间隙；
所述第二磁钢单包括固定于所述支撑壁靠近所述第二振膜一侧的第二主磁钢，所述第二主磁钢与所述内侧壁间隔形成所述第二磁间隙。
优选的，所述第一振动系统还包括第一骨架，所述第一骨架的一端固定于所述第一振膜，其另一端延伸至所述第一磁间隙内并与所述第一音圈连接，用以将所述第一音圈悬置于所述第一磁间隙内。
优选的，所述第一振动系统还包括固定于所述盆架的弹性导电件，所述弹性导电件与所述第一骨架连接，所述第一音圈与所述弹性导电件电连接。
优选的，所述第一振动系统还包括贴合于所述弹性导电件的辅助振膜。
优选的，所述第二振动系统还包括第二骨架，所述第二骨架的一端固定于所述第二振膜，其另一端固定于所述第二音圈靠近所述第二振膜的一端，用以将所述第二音圈悬置于所述第二磁间隙内。
优选的，所述柔性电路板包括贴合于所述第二振膜靠近所述第二音圈的一侧的电路板本体以及由所述电路板本体弯折延伸的电路板延伸部；所述第二骨架贴合固定于所述电路板本体远离所述第二振膜的一侧，所述电路板本体与所述第二音圈电连接，所述电路板延伸部与所述弹性导电件固定且电连接。
优选的，所述第二振动系统还包括固定于所述底壁远离所述第一振膜一侧的垫圈，所述电路板本体支撑固定于所述垫圈以使所述第二振膜与所述底壁形成间隔设置。
优选的，所述电路板延伸部依次沿所述垫圈的外侧和所述磁碗的外侧延伸至所述弹性导电件。
优选的，所述第一振膜包括呈环状的第一折环部、环绕所述第一折环部并间隔设置的第二折环部以及呈环状的球顶，所述第二折环部的外周缘固定于所述盆架，所述第一折环部的内周缘固定于所述第一副磁钢，所述球顶的内周缘与所述第一折环部的外周缘连接，所述球顶的外周缘与所述第二折环的内周缘连接，所述第一骨架固定于所述球顶；所述磁路系统还包括盖设于所述第一副磁钢的磁盖，所述磁盖与所述第一折环部的内周缘贴合并将所述第一折环的内周缘压设于所述第一副磁钢。
 有益效果
与相关技术相比，本实用新型的发声器件中，所述磁路系统的相对两侧设有第一磁间隙和第二磁间隙；第一振动系统的第一音圈插设于所述第一磁间隙内；第二振动系统的第二音圈插设于第二磁间隙内；在第一振膜与第二振膜之间设置柔性电路板，并使柔性电路板分别与所述第一音圈及所述第二音圈电连接，用以为分别为所述第一音圈和所述第二音圈提供反向驱动信号，通过设置使第一音圈的力因子BL值与第二音圈的力因子BL值相同，第一音圈的电阻与第二音圈的电阻相同，二者的驱动力相同，形成双音圈反向驱动结构，则第一振膜和第二振膜的振动方向相反，可抵消发声器件自身的振动，减小发声器件对运用的终端产生的无效振动，提高用户体验效果，而且双振膜有效的增加了有效振动面积Sd，有效的提升了发声器件的低频灵敏度。
 附图说明
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本实用新型发声器件的立体结构示意图；
图2为本实用新型发声器件的部分立体结构分解图；
图3为图2另一视角结构示意图；
图4为沿图1中A-A线的剖示图。
本发明的实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本实用新型保护的范围。
请同时参阅图1-4，本实用新型提供了一种发声器件100，其包括盆架1、第一振动系统2、磁路系统3、第二振动系统4以及柔性电路板5。
所述第一振动系统2包括固定于所述盆架1的第一振膜21以及驱动所述第一振膜21振动发声的第一音圈22。
所述磁路系统3固定于所述盆架1，所述磁路系统3的相对两侧分别设有第一磁间隙301和第二磁间隙302，即所述磁路系统3靠近所述第一振膜21的一侧设有第一磁间隙301，所述磁路系统远3离所述第一振膜21的一侧设有第二磁间隙302，所述第一音圈22插设于所述第一磁间隙301内。
所述第二振动系统4包括支撑固定于所述磁路系统3远离所述第一振膜21一侧的第二振膜41以及驱动所述第二振膜41振动发声的第二音圈42，所述第二音圈42插设于所述第二磁间隙302内。
所述柔性电路板5分别与所述第一音圈22及所述第二音圈42电连接，用以为分别为所述第一音圈22和所述第二音圈42提供反向驱动信号。本实施方式中，所述柔性电路板5设置于所述第一振膜21与所述第二振膜41之间。
通过设置使第一音圈22的力因子BL值与第二音圈42的力因子BL值相同，第一音圈22的电阻与第二音圈42的电阻相同，第一音圈22与第二音圈42的驱动力相同，形成双音圈反向驱动结构，则第一振膜21和第二振膜41的振动方向相反，可抵消发声器件100自身的振动，减小发声器件100运用于终端时对终端产生的无效振动，提高用户体验效果，而且双振膜结构有效的增加了发声器件100的整体有效振动面积Sd，可使发声器件100的低频灵敏度提升1.5-2倍，有效的提升了发声器件100的低频灵敏度，声学性能更优。
具体的，本实施方式中，所述磁路系统3包括固定于所述盆架1的磁碗31、固定于所述磁碗31靠近所述第一振膜21一侧的第一磁钢单元32以及固定于所述磁碗31靠近所述第二振膜41一侧的第二磁钢单元33。
所述磁碗31包括呈环状的底壁311、由所述底壁311的外周缘弯折延伸并固定于所述盆架1的外侧壁312、位于所述第一振膜21与所述底壁311之间的支撑壁313以及由所述底壁311的内周缘向靠近所述第一振膜21方向弯折延伸的内侧壁314，所述内侧壁314与所述支撑壁313连接。
所述第一磁钢单元32包括固定于所述支撑壁313靠近所述第一振膜21一侧的第一主磁钢321和环绕所述第一主磁钢321设置的第一副磁钢322，所述第一副磁磁钢322与所述第一主磁钢321间隔形成所述第一磁间隙301。当然，所述第一磁间隙也可以直接由第一主磁钢321与所述磁碗31的外侧壁312间隔形成。
所述第二磁钢单33包括固定于所述支撑壁313靠近所述第二振膜41一侧的第二主磁钢331，所述第二主磁钢331与所述内侧壁314间隔形成所述第二磁间隙302。即所述磁碗31的支撑壁313与内侧壁314形成了让位槽结构，第二磁钢单元33收容其内并与内侧壁314间隔形成所述第二磁间隙302，该结构可有效的减小发声器件100的厚度，其减小发声器件100在沿其第一振膜21或第二振膜41振动方向的尺寸。
当然，所述第二磁钢单元33也可与第一磁钢单元32的结构类似以形成所述第二磁间隙302，这也是可行的。
所述盆架1、所述第一振动系统2、所述磁碗31以及所述第一磁钢单元32则共同形成了正面发声结构；所述磁碗31、所述第二振动系统4以及所述第二磁钢单元33则共同形成了反面发声结构。到此，共同形成了双面振动发声的发声器件100。
本实施方式中，所述第一振动系统2还包括第一骨架23，所述第一骨架23的一端固定于所述第一振膜21，其另一端延伸至所述第一磁间隙301内并与所述第一音圈22连接，用以将所述第一音圈22悬置于所述第一磁间隙301内。第一骨架23的设置可以为第一音圈22提供设计空间，使得设计更灵活。
为了进一步提供第一振膜21的振动性能，所述第一振动系统2还包括固定于所述盆架1的弹性导电件24，所述弹性导电件24与所述第一骨架23连接。所述第一音圈22与所述弹性导电件电24连接，从而使得弹性导电件24为所述第一音圈22引线接电信号，避免了第一音圈22的引线断线的问题，提高了可靠性。同时，弹性导电件24也有效抑制了第一音圈22振动时的横向摆动，提高了发声器件100的发声性能稳定性。
更优的，所述第一振动系统2还包括贴合于所述弹性导电件24的辅助振膜25，用以进一步提高第一振膜21的振动性能以及抑制了第一音圈22振动时的横向摆动的效果。
本实施方式中，更优的，所述第一振膜21包括呈环状的第一折环部211、环绕所述第一折环部211并间隔设置的第二折环部212以及呈环状的球顶213。
所述第二折环部212的外周缘固定于所述盆架1，所述第一折环部211的内周缘固定于所述第一副磁钢322，所述球顶213的内周缘与所述第一折环部211的外周缘连接，所述球顶213的外周缘与所述第二折环的内周缘连接，所述第一骨架固定于所述球顶213，从而形成中空的双折环结构振膜，可有效的为磁路系统3提供让位空间，以进一步提供驱动性能。当然，为了密封第一振膜21的振动空间，所述磁路系统3还包括盖设于所述第一副磁钢322的磁盖323，所述磁盖323与所述第一折环部211的内周缘贴合并将所述第一折环211的内周缘压设于所述第一副磁钢322。上述结构可使第一磁钢单元32经所述第一折环部211的中间延伸以提高其驱动性能，磁盖323的设置形成对磁路系统3的密封以阻止磁力线外泄。
所述第二振动系统4还包括第二骨架43，所述第二骨架43的一端固定于所述第二振膜41，其另一端固定于所述第二音圈42靠近所述第二振膜41的一端，用以将所述第二音圈42悬置于所述第二磁间隙302内。所述第二骨架43的设置有效的解放了第二音圈42的设计自由度。
本实施方式中，第二振膜41固定支撑于所述磁碗31的底壁311远离所述第一振膜21的一侧，为了使第二振膜41有足够的振动空间，所述第二振动系统4还包括固定于所述底壁311远离所述第一振膜21一侧的垫圈44。
所述柔性电路板5包括贴合于所述第二振膜41靠近所述第二音圈42的一侧的电路板本体51以及由所述电路板本体51弯折延伸的电路板延伸部52。所述电路板本体51支撑固定于所述垫圈44以使所述第二振膜41与所述底壁311形成间隔设置。
所述第二骨架43贴合固定于所述电路板本体51远离所述第二振膜41的一侧，所述电路板本体51与所述第二音圈42电连接，所述电路板延伸部52与所述弹性导电件24固定且电连接。通过柔性电路板5则可同时为所述第一音圈22和第二音圈42提供相反的驱动力。
更优的，所述电路板延伸部52依次沿所述垫圈44的外侧和所述磁碗31的外侧延伸至所述弹性导电件24，从而尽可能减少对发声器件100的控制空间的占用，提高可靠性。
与相关技术相比，本实用新型的发声器件中，所述磁路系统的相对两侧设有第一磁间隙和第二磁间隙；第一振动系统的第一音圈插设于所述第一磁间隙内；第二振动系统的第二音圈插设于第二磁间隙内；在第一振膜与第二振膜之间设置柔性电路板，并使柔性电路板分别与所述第一音圈及所述第二音圈电连接，用以为分别为所述第一音圈和所述第二音圈提供反向驱动信号，通过设置使第一音圈的力因子BL值与第二音圈的力因子BL值相同，第一音圈的电阻与第二音圈的电阻相同，二者的驱动力相同，形成双音圈反向驱动结构，则第一振膜和第二振膜的振动方向相反，可抵消发声器件自身的振动，减小发声器件对运用的终端产生的无效振动，提高用户体验效果，而且双振膜有效的增加了有效振动面积Sd，有效的提升了发声器件的低频灵敏度。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (10)

  1. 一种发声器件，其特征在于，所述发声器件包括：
    盆架；
    第一振动系统，所述第一振动系统包括固定于所述盆架的第一振膜以及驱动所述第一振膜振动发声的第一音圈；
    磁路系统，所述磁路系统固定于所述盆架，所述磁路系统靠近所述第一振膜的一侧设有第一磁间隙，所述磁路系统远离所述第一振膜的一侧设有第二磁间隙；所述第一音圈插设于所述第一磁间隙内；
    第二振动系统，所述第二振动系统包括支撑固定于所述磁路系统远离所述第一振膜一侧的第二振膜以及驱动所述第二振膜振动发声的第二音圈，所述第二音圈插设于所述第二磁间隙内；以及，
    柔性电路板，所述柔性电路板设置于所述第一振膜与所述第二振膜之间，所述柔性电路板分别与所述第一音圈及所述第二音圈电连接，用以为分别为所述第一音圈和所述第二音圈提供反向驱动信号。
  2. 根据权利要求1所述的发声器件，其特征在于，所述磁路系统包括固定于所述盆架的磁碗、固定于所述磁碗靠近所述第一振膜一侧的第一磁钢单元以及固定于所述磁碗靠近所述第二振膜一侧的第二磁钢单元；
    所述磁碗包括呈环状的底壁、由所述底壁的外周缘弯折延伸并固定于所述盆架的外侧壁、位于所述第一振膜与所述底壁之间的支撑壁以及由所述底壁的内周缘向靠近所述第一振膜方向弯折延伸的内侧壁，所述内侧壁与所述支撑壁连接；
    所述第一磁钢单元包括固定于所述支撑壁靠近所述第一振膜一侧的第一主磁钢和环绕所述第一主磁钢设置的第一副磁钢，所述第一副磁磁钢与所述第一主磁钢间隔形成所述第一磁间隙；
    所述第二磁钢单包括固定于所述支撑壁靠近所述第二振膜一侧的第二主磁钢，所述第二主磁钢与所述内侧壁间隔形成所述第二磁间隙。
  3. 根据权利要求2所述的发声器件，其特征在于，所述第一振动系统还包括第一骨架，所述第一骨架的一端固定于所述第一振膜，其另一端延伸至所述第一磁间隙内并与所述第一音圈连接，用以将所述第一音圈悬置于所述第一磁间隙内。
  4. 根据权利要求3所述的发声器件，其特征在于，所述第一振动系统还包括固定于所述盆架的弹性导电件，所述弹性导电件与所述第一骨架连接，所述第一音圈与所述弹性导电件电连接。
  5. 根据权利要求4所述的发声器件，其特征在于，所述第一振动系统还包括贴合于所述弹性导电件的辅助振膜。
  6. 根据权利要求4所述的发声器件，其特征在于，所述第二振动系统还包括第二骨架，所述第二骨架的一端固定于所述第二振膜，其另一端固定于所述第二音圈靠近所述第二振膜的一端，用以将所述第二音圈悬置于所述第二磁间隙内。
  7. 根据权利要求6所述的发声器件，其特征在于，所述柔性电路板包括贴合于所述第二振膜靠近所述第二音圈的一侧的电路板本体以及由所述电路板本体弯折延伸的电路板延伸部；所述第二骨架贴合固定于所述电路板本体远离所述第二振膜的一侧，所述电路板本体与所述第二音圈电连接，所述电路板延伸部与所述弹性导电件固定且电连接。
  8. 根据权利要求7所述的发声器件，其特征在于，所述第二振动系统还包括固定于所述底壁远离所述第一振膜一侧的垫圈，所述电路板本体支撑固定于所述垫圈以使所述第二振膜与所述底壁形成间隔设置。
  9. 根据权利要求8所述的发声器件，其特征在于，所述电路板延伸部依次沿所述垫圈的外侧和所述磁碗的外侧延伸至所述弹性导电件。
  10. 根据权利要求3所述的发声器件，其特征在于，所述第一振膜包括呈环状的第一折环部、环绕所述第一折环部并间隔设置的第二折环部以及呈环状的球顶，所述第二折环部的外周缘固定于所述盆架，所述第一折环部的内周缘固定于所述第一副磁钢，所述球顶的内周缘与所述第一折环部的外周缘连接，所述球顶的外周缘与所述第二折环的内周缘连接，所述第一骨架固定于所述球顶；所述磁路系统还包括盖设于所述第一副磁钢的磁盖，所述磁盖与所述第一折环部的内周缘贴合并将所述第一折环的内周缘压设于所述第一副磁钢。
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