WO2020134347A1 - 发声器件 - Google Patents

发声器件 Download PDF

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Publication number
WO2020134347A1
WO2020134347A1 PCT/CN2019/110614 CN2019110614W WO2020134347A1 WO 2020134347 A1 WO2020134347 A1 WO 2020134347A1 CN 2019110614 W CN2019110614 W CN 2019110614W WO 2020134347 A1 WO2020134347 A1 WO 2020134347A1
Authority
WO
WIPO (PCT)
Prior art keywords
diaphragm
sound
elastic support
opposite sides
magnetic
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
Application number
PCT/CN2019/110614
Other languages
English (en)
French (fr)
Inventor
刘晓东
张龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AAC Technologies Holdings Shenzhen Co Ltd
AAC Technologies Pte Ltd
Original Assignee
AAC Acoustic Technologies Shenzhen Co Ltd
AAC Technologies Pte Ltd
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 AAC Acoustic Technologies Shenzhen Co Ltd, AAC Technologies Pte Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Publication of WO2020134347A1 publication Critical patent/WO2020134347A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/045—Mounting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/07—Suspension between moving magnetic core and housing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery

Definitions

  • the present invention relates to the field of sound and electricity, and in particular to a sound-emitting device used in portable electronic products.
  • the vibration system of the related art sound-generating device includes a diaphragm for vibrating and sounding fixed to the basin frame, a voice coil attached to the diaphragm, and a support for the voice coil at one end away from the diaphragm
  • An elastic support assembly for enhancing the lateral stability of the voice coil includes a yoke fixed to the basin frame, a main magnetic steel fixed to the yoke, respectively disposed on opposite sides of the main magnetic steel and Two auxiliary magnetic steels forming a magnetic gap with the main magnetic steel and a clamping plate stacked on the auxiliary magnetic steel;
  • the elastic support assembly includes two and are respectively located on two opposite sides of the main magnetic steel.
  • the object of the present invention is to provide an acoustic device with excellent acoustic performance and good reliability.
  • the present invention provides a sound-emitting device, which includes a basin frame and a vibration system respectively fixed to the basin frame and a magnetic circuit system with a magnetic gap, the vibration system includes a fixed to the basin A diaphragm of the frame, a voice coil fixed to the diaphragm and inserted in the magnetic gap to drive the diaphragm to vibrate and sound And an elastic support assembly fixed to the basin frame and connected to the end of the voice coil away from the diaphragm;
  • the magnetic circuit system includes a yoke fixed to the basin frame, and a main magnet fixed to the yoke Steel, auxiliary magnets located on opposite sides of the main magnet and spaced apart from the main magnet to form the magnetic gap, and plywood stacked on the auxiliary magnets and spaced apart from the elastic support assembly;
  • the elastic support assembly, the elastic support assembly and the secondary magnetic steel are not overlapping at least partially in an orthographic projection on the yoke along the vibration direction of the diaphragm,
  • the main magnetic steel has a rectangular shape
  • two of the secondary magnetic steels are located on opposite sides of the long axis of the main magnetic steel
  • the two elastic support components are located on the short axis of the main magnetic steel, respectively Opposite sides.
  • the main body has a rectangular shape, the opposite sides of the long axis of the main body are stacked on the two secondary magnetic steels respectively, and the extending portion is formed by the opposite sides of the short axis of the main body and suspended Between the diaphragm and the elastic support assembly.
  • the elastic support assembly includes an elastic member fixed at one end to the basin frame, and the other end is fixed to an end of the voice coil away from the diaphragm, the elastic member includes a fixed member at the basin frame A first arm, a second arm fixed to the voice coil, and two elastic arms respectively connected to the first arm and the second wall, the two elastic arms are spaced apart from the first arm and the The second arm together forms the concession hole.
  • the elastic support assembly further includes an auxiliary diaphragm connected to a side of the elastic member away from the diaphragm, the auxiliary diaphragm includes two and are respectively located on opposite sides of the yield hole side.
  • the elastic member is a flexible circuit board, and the voice coil is electrically connected to the elastic member.
  • the extension portion is arc-shaped in a cross section perpendicular to the vibration direction of the diaphragm.
  • the sound-generating device of the present invention includes a diaphragm, a voice coil fixed to the diaphragm and driving it to vibrate, and an elastic support assembly connected to an end of the voice coil away from the diaphragm.
  • the support portion is provided at a position of the elastic support assembly, and one extension portion is provided at the position through the yoke and abuts the support portion.
  • the above structure makes the clamping plate correspond to the elastic support assembly.
  • the space between the part and the diaphragm is fully utilized due to the extension portion, which greatly improves the driving magnetic force of the magnetic circuit system, effectively increases the acoustic performance of the sound-generating device and improves the
  • the vibration symmetry of the sounding device is described, and the reliability is better.
  • FIG. 1 is a three-dimensional schematic diagram of a sound-generating device of the present invention
  • FIG. 2 is an exploded view of a partial stereoscopic structure of a sound-generating device of the present invention
  • FIG. 3 is a cross-sectional view taken along line A-A in FIG. 1;
  • FIG. 4 is an assembly diagram of the yoke and the elastic support assembly of the sound-generating device of the present invention.
  • FIG. 5 is an exploded view of a three-dimensional structure of an elastic support assembly of a sound-emitting device of the present invention.
  • the present invention provides a sound-emitting device 100, including a basin frame 1, a vibration system 2 and a magnetic circuit system 3 respectively fixed to the basin frame 1, and a front cover 4, the magnetic circuit
  • the system 3 has a magnetic gap 10, and the magnetic circuit system 3 is used to drive the vibration system 2 to vibrate and sound.
  • the vibration system 2 includes a diaphragm 21 fixed to the basin frame 1, a voice coil 22 fixed to the diaphragm 21 and inserted in the magnetic gap 10 to drive the diaphragm 21 to vibrate and sound And an elastic support assembly 23 fixed to the basin frame 1 and connected to the end of the voice coil 22 away from the diaphragm 21.
  • the elastic support assembly 23 includes an elastic member 231, an auxiliary diaphragm 232 connected to the side of the elastic member 231 away from the diaphragm 21, and a yield hole 230 therethrough.
  • the elastic member 231 includes a first arm 2311 fixed to the basin frame 1, a second arm 2312 fixed to the voice coil 22, and respectively connecting the first arm 2311 and the first
  • the two elastic arms 2313 of the second wall 2312, the two elastic arms 2313 are spaced apart and form the yield hole 230 together with the first arm 2311 and the second arm 2312.
  • One end of the elastic member 231 is fixed to the basin frame 1, the other end is fixed to the end of the voice coil 22 away from the diaphragm 21, and the auxiliary diaphragm 232 is connected to the elastic member 231.
  • the auxiliary diaphragm 232 is attached and fixed to a side of the elastic member 231 away from the diaphragm 21.
  • the elastic support assembly 23 connects and supports the end of the voice coil 22 away from the diaphragm 21 to the basin frame 1. On the one hand, it is used to strengthen the vibration effect of the diaphragm 21 and improve the acoustic performance of the sound-generating device 100, and on the other hand, it is used to balance the sway of the vibration system 2 and improve the stability of the sound-emitting device 100. It should be noted that, the elastic support assembly 23 may also include only one of the elastic member 231 or the auxiliary diaphragm 232, which is also feasible.
  • the elastic member 231 is a flexible circuit board, and the voice coil 22 is electrically connected to the elastic member 231.
  • the voice coil 22 is led to connect to an external power source, avoiding the risk of the voice coil lead being easily broken when the voice coil lead structure is led out .
  • the auxiliary diaphragm 232 includes two and are respectively located on opposite sides of the yield hole 230.
  • the yield hole 230 penetrates through the elastic member 231 and the auxiliary diaphragm 232.
  • the magnetic circuit system 3 includes a yoke 31 fixed to the basin frame 1, a main magnetic steel 32 fixed to the yoke 31, respectively located on opposite sides of the main magnetic steel 32 and with the The main magnet 32 separates the two sub-magnets 33 forming the magnetic gap 10 and the clamping plate 34 stacked on the sub-magnet 33 and spaced apart from the elastic support assembly 23.
  • the orthographic projections of the elastic support assembly 23 and the secondary magnetic steel 33 on the yoke 31 along the vibration direction of the diaphragm 21 are at least partially non-overlapping, and preferably do not overlap each other.
  • the clamping plate 34 includes a ring-shaped main body 341 stacked on the auxiliary magnetic steel 33, and two opposite sides of the main body 341 extend in the direction of the main magnetic steel 32 and Two support portions 342 spaced apart from the voice coil 22, and the two support portions 342 are opposite to the two elastic support assemblies 23, respectively.
  • the supporting portion 342 is directly opposite to the yield hole 230.
  • the yoke 31 includes a yoke fixed to the basin frame 1
  • the body 311 and two extensions 312 extending from opposite sides of the yoke body 311 toward the support 342 respectively, the two extensions 312 pass through the abutment holes 230 opposite to each other and abut The opposite of the supporting portion 342.
  • the connection between the extension portion 312 and the support portion 342 makes the magnetic circuit form a closed loop, and the support portion 342 allows the extension portion 312 to be closer to the main magnetic steel 32, effectively increasing the magnetic gap 10
  • the magnetic line density improves the driving performance.
  • the splint 34 is rectangular.
  • the main body 341 has a rectangular shape
  • the opposite sides of the main body 341 on the long axis are stacked on the two auxiliary magnetic steels 33, respectively
  • the extending portion 312 is formed by the opposite sides of the main body 341 on the short axis And suspended between the diaphragm 21 and the elastic support assembly 23.
  • the extending portion 312 strengthens the magnetic field strength on both sides of the main body 341 on the short axis side, and forms the magnetic gap 10 on the opposite sides of the main magnetic steel 32 on the opposite side.
  • the extending portion 312 is arc-shaped in cross section perpendicular to the vibration direction of the diaphragm 21. This structure is advantageous for the extension portion 312 to match the shape of the yield hole 230, so that the vibration of the elastic support assembly 23 is better balanced.
  • the elastic support assembly 23 includes two and are located on opposite sides of the main magnet 32, and each of the yield hole 230 of the elastic support assembly 23 and the The support portion 342 is directly opposite.
  • the two elastic support assemblies 23 have a center symmetrical structure with respect to the main magnetic steel 32, and this arrangement makes the vibration balance of the vibration system 2 better.
  • the two elastic support assemblies 23 are respectively located on different opposite sides of the main magnetic steel 32.
  • the main magnetic steel 32 has a rectangular shape
  • the two auxiliary magnetic steels 33 are located on opposite sides of the long axis of the main magnetic steel 32
  • the two elastic support components 23 are located on the
  • the two opposite sides of the short axis of the main magnetic steel 32 that is, the two yielding holes 230 are respectively located on the opposite sides of the short axis of the main magnetic steel 32
  • the two support portions 342 are also respectively located on the main magnetic steel
  • the two opposite sides of the short axis of the 32 that is, the two extensions 312 are respectively located on the opposite sides of the short axis of the main magnet 32.
  • the position of the clamping plate 34 facing the elastic support assembly 23 is not provided with a magnetic steel structure due to the need to give way to the elastic support assembly 23, so that the position is away from the voice coil 22 and The large space of the diaphragm 21 is not effectively used, thereby limiting the driving force of the magnetic circuit system 3, and thereby limiting the acoustic performance of the sound emitting device 100. Therefore, in the present invention, the yoke 31 extends at this position The extended portion 312, the extended portion 312 is equivalent to providing a magnetic steel structure at this position, using excess space, greatly improving the driving performance of the magnetic circuit system 3, making the sound-emitting device The acoustic performance of 100 is better.
  • the front cover 4 is disposed on an end of the basin shelf close to the diaphragm 21 and surrounds the diaphragm 21 to form a sound emitting cavity, and the front cover 4 is provided with a sound outlet 41 and a cover
  • the damping layer 42 provided on the sound outlet 41 is used to adjust the high-frequency acoustic performance of sound generation.
  • the sound-generating device of the present invention includes a diaphragm, a voice coil fixed to the diaphragm and driving it to vibrate, and an elastic support assembly connected to an end of the voice coil away from the diaphragm.
  • the clamping plate is provided with the support portion corresponding to the position of the elastic support assembly, and the extension portion is provided at the position by the yoke and abuts on the support portion, the above structure makes the clamping plate correspond to the elasticity
  • the space between the part of the support assembly and the diaphragm is fully utilized due to the provision of the extension portion, which greatly improves the driving magnetic force of the magnetic circuit system, effectively increasing the acoustic performance of the sound-generating device and The vibration symmetry of the sound-emitting device is improved, and the reliability is better.

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

Abstract

本发明提供了一种发声器件，其包括盆架、振动系统及磁路系统，所述振动系统包括振膜、音圈及弹性支撑组件；所述磁路系统包括磁轭、主磁钢、两个副磁钢及夹板；所述弹性支撑组件包括两个且分别位于所述主磁钢的另外相对两侧，所述夹板包括主体和两个支撑部，两个所述支撑部分别与两个所述弹性支撑组件相对；每一个所述弹性支撑组件设有贯穿其上且与所述支撑部正对的让位孔；所述磁轭包括固定于所述盆架的磁轭本体和由所述磁轭本体的相对两侧分别向两个所述支撑部方向延伸的两个延伸部，两个所述延伸部分别穿过与其相对的所述让位孔并抵接于相对的所述支撑部。与相关技术相比，本发明的发声器件可靠性好且声学性能优。

Description

发声器件
技术领域
[0001] 本发明涉及声电领域， 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
[0002] 随着移动互联网时代的到来， 智能移动设备的数量不断上升。 而在众多移动设 备之中， 手机无疑是最常见、 最便携的移动终端设备。 用于播放声音的发声器 件被大量应用到现在的手机等智能移动设备之中。 而运用在发声器件的振动系 统和磁路系统直接关系着发声器件的音质好坏。
[0003] 相关技术发声器件的振动系统包括固定于盆架的用于振动发声的振膜、 贴设于 所述振膜的音圈、 支撑于所述音圈远离所述振膜一端的用于加强所述音圈的横 向稳定性弹性支撑组件； 所述磁路系统包括固定于盆架的磁轭、 固定于所述磁 轭的主磁钢、 分别设置于所述主磁钢相对两侧且与所述主磁钢间隔形成磁间隙 的两个副磁钢以及叠设于所述副磁钢的夹板； 所述弹性支撑组件包括两个且分 别位于所述主磁钢的另外相对两侧。
发明概述
技术问题
[0004] 然而， 相关技术的所述发声器件中， 所述夹板正对所述弹性支撑组件的位置与 所述音圈之间的间隙较大， 空间未能有效利用， 限制了所述发声器件的声学性 能。
[0005] 因此， 实有必须提供一种新的发声器件解决上述技术问题。
问题的解决方案
技术解决方案
[0006] 本发明的目的在于提供一种声学性能优且可靠性好的发声器件。
[0007] 为达到上述目的， 本发明提供一种发声器件， 其包括盆架以及分别固定于所述 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 的振膜、 固定于所述振膜并插设于所述磁间隙以驱动所述振膜振动发声的音圈 以及固定于所述盆架并与所述音圈远离所述振膜一端连接的弹性支撑组件； 所 述磁路系统包括固定于所述盆架的磁轭、 固定于所述磁轭的主磁钢、 分别位于 所述主磁钢相对两侧且与所述主磁钢间隔形成所述磁间隙的副磁钢以及叠设于 所述副磁钢且与所述弹性支撑组件间隔的夹板； 所述弹性支撑组件所述弹性支 撑组件与所述副磁钢沿所述振膜的振动方向在所述磁轭上的正投影至少部分不 重叠， 其特征在于， 所述夹板包括叠设于所述副磁钢且呈环状的主体和由所述 主体相对两侧分别向所述主磁钢方向延伸且与所述音圈间隔的支撑部， 所述支 撑部与所述弹性支撑组件相对； 所述弹性支撑组件设有贯穿其上且与所述支撑 部正对的让位孔； 所述磁轭包括固定于所述盆架的磁轭本体和由所述磁轭本体 的相对两侧分别所述支撑部方向延伸的延伸部， 所述延伸部穿过与其相对的所 述让位孔并抵接于相对的所述支撑部。
[0008] 优选的， 所述主磁钢呈矩形， 两个所述副磁钢分别位于所述主磁钢长轴相对两 侧， 两个所述弹性支撑组件分别位于所述主磁钢短轴相对两侧。
[0009] 优选的， 所述主体呈矩形， 所述主体长轴相对两侧分别叠设于两个所述副磁钢 ， 所述延伸部由所述主体短轴相对两侧延伸形成并悬置于所述振膜与所述弹性 支撑组件之间。
[0010] 优选的， 所述弹性支撑组件包括一端固定于所述盆架， 另一端固定于所述音圈 远离所述振膜一端的弹性件， 所述弹性件包括固定于所述盆架的第一臂、 固定 于所述音圈的第二臂以及分别连接所述第一臂和所述第二壁的两个弹臂， 两个 所述弹臂间隔且与所述第一臂及所述第二臂共同围成所述让位孔。
[0011] 优选的， 所述弹性支撑组件还包括连接于所述弹性件远离所述振膜一侧的辅助 振膜， 所述辅助振膜包括两个且分别位于所述让位孔的相对两侧。
[0012] 优选的， 所述弹性件为柔性电路板， 所述音圈与所述弹性件电连接。
[0013] 优选的， 所述延伸部沿垂直于所述振膜振动方向的截面呈弧形。
发明的有益效果
有益效果
[0014] 与相关技术相比， 本发明的发声器件包括振膜、 固定于所述振膜并驱动其振动 的音圈和连接于音圈远离所述振膜一端的弹性支撑组件， 通过在所述夹板对应 所述弹性支撑组件的位置设置所述支撑部， 并通过所述磁轭在该位置设置一个 所述延伸部并抵接于所述支撑部， 上述结构使得所述夹板对应所述弹性支撑组 件的部分与所述振膜之间的空间因设置所述延伸部而得以充分利用， 极大程度 的提高了所述磁路系统的驱动磁力， 有效增加了所述发声器件的声学性能和改 善了所述发声器件的振动对称性， 可靠性更好。
对附图的简要说明
附图说明
[0015] 为了更清楚地说明本发明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发明的一 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：
[0016] 图 1为本发明发声器件的立体结构示意图；
[0017] 图 2为本发明发声器件的部分立体结构分解图；
[0018] 图 3为沿图 1中 A-A线的剖示图；
[0019] 图 4为本发明发声器件的磁轭与弹性支撑组件的装配图；
[0020] 图 5为本发明发声器件的弹性支撑组件的立体结构分解图。
发明实施例
本发明的实施方式
[0021] 下面将结合本发明实施例中的附图， 对本发明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发明的一部分实施例， 而不是全部 的实施例。 基于本发明中的实施例， 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， 都属于本发明保护的范围。
[0022] 请参图 1-5所示， 本发明提供一种发声器件 100, 包括盆架 1、 分别固定于盆架 1 的振动系统 2和磁路系统 3以及前盖 4, 所述磁路系统 3具有磁间隙 10, 所述磁路 系统 3用于驱动所述振动系统 2振动发声。
[0023] 所述振动系统 2包括固定于所述盆架 1的振膜 21、 固定于所述振膜 21并插设于所 述磁间隙 10以驱动所述振膜 21振动发声的音圈 22以及固定于所述盆架 1并与所述 音圈 22远离所述振膜 21—端连接的弹性支撑组件 23。 [0024] 本实施方式中， 所述弹性支撑组件 23包括弹性件 231、 连接于所述弹性件 231远 离所述振膜 21—侧的辅助振膜 232以及贯穿其上让位孔 230。
[0025] 具体的， 所述弹性件 231包括固定于所述盆架 1的第一臂 2311、 固定于所述音圈 22的第二臂 2312以及分别连接所述第一臂 2311和所述第二壁 2312的两个弹臂 231 3 , 两个所述弹臂 2313间隔且与所述第一臂 2311及所述第二臂 2312共同围成所述 让位孔 230。 所述弹性件 231—端固定于所述盆架 1， 另一端固定于所述音圈 22的 远离所述振膜 21—端， 所述辅助振膜 232连接于所述弹性件 231。 比如， 所述辅 助振膜 232贴合固定于所述弹性件 231的远离所述振膜 21的一侧。 所述弹性支撑 组件 23将所述音圈 22远离所述振膜 21的一端连接支撑至所述盆架 1。 一方面用于 加强所述振膜 21的振动效果， 改善所述发声器件 100的声学性能， 另一方面用于 平衡所述振动系统 2的摇摆， 提高所述发声器件 100的稳定性。 需要说明的是， 所述弹性支撑组件 23可也可只包括弹性件 231或所述辅助振膜 232的其中一个， 这也是可行的。
[0026] 更优的， 所述弹性件 231为柔性电路板， 所述音圈 22与所述弹性件 231电连接。
一方面用于提高所述振动系统 2的振动强度和平衡， 抑制摇摆， 另一方向为所述 音圈 22引出至连接外部电源， 避免了音圈引线结构引出电源时音圈引线容易断 裂的风险。
[0027] 所述辅助振膜 232包括两个且分别位于所述让位孔 230的相对两侧。 所述让位孔 230贯穿于所述弹性件 231和所述辅助振膜 232。
[0028] 所述磁路系统 3包括固定于所述盆架 1的磁轭 31、 固定于所述磁轭 31的主磁钢 32 、 分别位于所述主磁钢 32相对两侧且与所述主磁钢 32间隔形成所述磁间隙 10的 两个副磁钢 33以及叠设于所述副磁钢 33且与所述弹性支撑组件 23间隔的夹板 34 。 所述弹性支撑组件 23与所述副磁钢 33沿所述振膜 21的振动方向在所述磁轭 31 上的正投影至少部分不重叠， 优选为互不重叠。
[0029] 在本实施方式中， 所述夹板 34包括叠设于所述副磁钢 33且呈环状的主体 341和 由所述主体 341相对两侧分别向所述主磁钢 32方向延伸且与所述音圈 22间隔的两 个支撑部 342, 两个所述支撑部 342分别与两个所述弹性支撑组件 23相对。 所述 支撑部 342与所述让位孔 230正对设置。 所述磁轭 31包括固定于所述盆架 1的磁轭 本体 311和由所述磁轭本体 311的相对两侧分别向所述支撑部 342方向延伸的两个 延伸部 312， 两个所述延伸部 312穿过与其相对所述让位孔 230并抵接于相对的所 述支撑部 342。 所述延伸部 312与所述支撑部 342的连接设置使得磁路形成闭环， 所述支撑部 342使所述延伸部 312可更靠近所述主磁钢 32, 有效增加所述磁间隙 1 0内的磁力线密度， 提高驱动性能。
[0030] 本实施方式中， 所述夹板 34呈矩形。 具体的， 所述主体 341呈矩形， 所述主体 3 41长轴相对两侧分别叠设于两个所述副磁钢 33, 所述延伸部 312由所述主体 341 短轴相对两侧延伸形成并悬置于所述振膜 21与所述弹性支撑组件 23之间。 所述 延伸部 312在所述主体 341短轴相对两侧并增强该两侧的磁场强度， 并在该处与 所述主磁钢 32短轴相对两侧形成所述磁间隙 10。 所述延伸部 312沿垂直于所述振 膜 21振动方向的截面呈弧形。 该结构有利所述延伸部 312配合所述让位孔 230的 形状， 使所述弹性支撑组件 23的振动的平衡性更好。
[0031] 本实施方式中， 所述弹性支撑组件 23包括两个且分别位于所述主磁钢 32的另外 相对两侧， 每一个所述弹性支撑组件 23的所述让位孔 230与所述支撑部 342正对 设置。 两个所述弹性支撑组件 23关于所述主磁钢 32呈中心对称结构， 该设置使 所述振动系统 2的振动平衡性更好。
[0032] 也就是说， 本实施方式中， 两个所述弹性支撑组件 23分别位于所述主磁钢 32的 不同的相对两侧。
[0033] 本实施方式中， 所述主磁钢 32呈矩形， 两个所述副磁钢 33分别位于所述主磁钢 32长轴相对两侧， 两个所述弹性支撑组件 23分别位于所述主磁钢 32短轴相对两 侧， 即两个所述让位孔 230分别位于所述主磁钢 32短轴相对两侧， 并且两个所述 支撑部 342也分别位于所述主磁钢 32短轴相对两侧， 也就是两个所述延伸部 312 分别位于所述主磁钢 32短轴相对两侧。 该结构则可尽大程度的保持磁路系统 3的 结构体积最大化， 从而保持磁场强度。
[0034] 其中， 相关技术中所述夹板 34正对所述弹性支撑组件 23的位置因需给所述弹性 支撑组件 23让位而没有设置磁钢结构， 使得该位置距所述音圈 22及所述振膜 21 存在较大的空间未被有效利用， 从而限制了所述磁路系统 3的驱动力， 进而限制 了所述发声器件 100的声学性能。 因此， 本发明中在该位置通过所述磁轭 31延伸 出的所述延伸部 312, 所述延伸部 312相当于在该位置设置一个磁钢结构， 将多 余空间利用， 极大程序的提高了所述磁路系统 3的驱动性能， 使得所述发声器件 100的声学性能更好。
[0035] 当然， 不限于此， 在所述延伸部 312的位置直接设置磁钢并固定于所述磁轭 31 也是可以达到相同的效果。
[0036] 所述前盖 4盖设于所述盆架的靠近所述振膜 21的一端且与所述振膜 21围成发声 腔体， 所述前盖 4设有出声口 41以及盖设于所述出声口 41的阻尼层 42, 用以实现 发声的高频声学性能的调节。
[0037] 与相关技术相比， 本发明的发声器件包括振膜、 固定于所述振膜并驱动其振动 的音圈和连接于音圈远离所述振膜一端的弹性支撑组件， 通过在所述夹板对应 所述弹性支撑组件的位置设置所述支撑部， 并通过所述磁轭在该位置设置一个 所述延伸部并抵接于所述支撑部， 上述结构使得所述夹板对应所述弹性支撑组 件的部分与所述振膜之间的空间因设置所述延伸部而得以充分利用， 极大程度 的提高了所述磁路系统的驱动磁力， 有效增加了所述发声器件的声学性能和改 善了所述发声器件的振动对称性， 可靠性更好。
[0038] 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

权利要求书
[权利要求 2] 根据权利要求 i所述的发声器件， 其特征在于， 所述主磁钢呈矩形， 两个所述副磁钢分别位于所述主磁钢长轴相对两侧， 两个所述弹性支 撑组件分别位于所述主磁钢短轴相对两侧。
[权利要求 3] 根据权利要求 2所述的发声器件， 其特征在于， 所述主体呈矩形， 所 述主体长轴相对两侧分别叠设于两个所述副磁钢， 所述延伸部由所述 主体短轴相对两侧延伸形成并悬置于所述振膜与所述弹性支撑组件之 间。
[权利要求 4] 根据权利要求 1所述的发声器件， 其特征在于， 所述弹性支撑组件包 括一端固定于所述盆架、 另一端固定于所述音圈远离所述振膜一端的 弹性件， 所述弹性件包括固定于所述盆架的第一臂、 固定于所述音圈 的第二臂以及分别连接所述第一臂和所述第二臂的两个弹臂， 两个所 述弹臂间隔且与所述第一臂及所述第二臂共同围成所述让位孔。
[权利要求 5] 根据权利要求 4所述的发声器件， 其特征在于， 所述弹性支撑组件还 包括连接于所述弹性件远离所述振膜一侧的辅助振膜， 所述辅助振膜 包括两个且分别位于所述让位孔的相对两侧。
[权利要求 6] 根据权利要求 4所述的发声器件， 其特征在于， 所述弹性件为柔性电 路板， 所述音圈与所述弹性件电连接。
[权利要求 7] 根据权利要求 1所述的发声器件， 其特征在于， 所述延伸部沿垂直于 所述振膜振动方向的截面呈弧形。
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