WO2021114210A1 - 发声器件 - Google Patents

发声器件 Download PDF

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Publication number
WO2021114210A1
WO2021114210A1 PCT/CN2019/125074 CN2019125074W WO2021114210A1 WO 2021114210 A1 WO2021114210 A1 WO 2021114210A1 CN 2019125074 W CN2019125074 W CN 2019125074W WO 2021114210 A1 WO2021114210 A1 WO 2021114210A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic steel
positioning
yoke
auxiliary
fixed
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/CN2019/125074
Other languages
English (en)
French (fr)
Inventor
宋威
张帆
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
Priority to PCT/CN2019/125074 priority Critical patent/WO2021114210A1/zh
Publication of WO2021114210A1 publication Critical patent/WO2021114210A1/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
    • H04R9/06—Loudspeakers

Definitions

  • the invention relates to the field of electro-acoustic conversion, in particular to a sound-producing device used in portable electronic products.
  • the related art sounding device includes a basin frame, a vibration system respectively fixed to the basin frame, and a magnetic circuit system with a magnetic gap.
  • the magnetic circuit system includes a magnetic yoke, a main magnetic steel fixed to the magnetic yoke, and a secondary magnetic steel ringed on the main magnetic steel and separated from the main magnetic steel to form the magnetic gap.
  • the magnetic circuit system and the basin frame part are normally positioned by matching the features provided by the yoke and the basin frame, such as the magnetic
  • the yoke is provided with a positioning column
  • the basin frame is provided with a positioning hole
  • the positioning column is inserted into the positioning hole to form a fixation so that the magnetic circuit system and the basin frame match and limit the position.
  • this structure requires the main magnet and the auxiliary magnet to form a concession space, which limits the reduction in the volume of the magnetic circuit system, thereby improving the acoustic performance of the sound generating device. Restricted.
  • the purpose of the present invention is to overcome the above technical problem and provide a sound device with good acoustic performance.
  • the present invention provides a sound generating device, which includes a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system that drives the vibration system to vibrate and produce sound;
  • the basin frame is used to vibrate and sound the diaphragm.
  • the magnetic circuit system includes a main magnet and an auxiliary magnet arranged at intervals to form a magnetic gap, and a yoke fixed to the main magnet and the auxiliary magnet at the same time.
  • the auxiliary magnet The steel is arranged around the circumference of the main magnetic steel, and the auxiliary magnetic steel includes a secondary magnetic steel body fixed to the yoke and a positioning portion protruding and extending from the secondary magnetic steel body toward the diaphragm, so The positioning part is fixed to the basin frame.
  • the secondary magnetic steel body has a rectangular shape, and the positioning portions include two and are respectively located on opposite sides of the long axis of the secondary magnetic steel body.
  • the magnetic circuit system further includes a secondary pole plate arranged on the side of the secondary magnetic steel away from the yoke, and the secondary pole plate is provided along the vibration direction of the vibration system and penetrates through it and is connected to the secondary pole plate.
  • the positioning groove is matched with the positioning part, and the positioning part passes through the positioning groove and is fixed to the basin frame.
  • the positioning portion includes a plurality of positioning portions distributed symmetrically, and the positioning groove includes a plurality of positioning portions, and each positioning portion passes through a corresponding positioning groove.
  • the secondary magnetic steel body has a rectangular shape, and the positioning portions include two and are respectively located on opposite sides of the long axis of the secondary magnetic steel body.
  • the secondary magnetic steel body includes a first body along the long axis direction and a second body along the short axis direction.
  • the surface of the first body away from the main magnetic steel is aligned with the edge of the yoke along the vibration direction. Flush.
  • the basin frame is rectangular
  • the secondary pole plate further includes a secondary pole plate body covered and fixed to the secondary magnetic steel body, and the secondary pole plate body faces the basin frame from opposite ends of the secondary pole plate body.
  • the two short axis sides of the two sides extend two fixed parts, the fixed parts are fixed to the basin frame, and the positioning groove is provided in the secondary pole plate body.
  • the secondary electrode plate further includes an escape hole formed at a distance between the fixing portion and the secondary electrode plate body
  • the vibration system further includes an auxiliary diaphragm arranged at a distance from the diaphragm, and the auxiliary diaphragm Fixed to the side of the basin frame close to the yoke, the auxiliary diaphragm includes two opposite sides of the main magnetic steel short axis, and the two auxiliary diaphragms are in front of the escape hole. Pair set.
  • the yoke includes a yoke body and an escape portion formed by recessing opposite sides of the yoke body in a direction away from the basin frame, and both the main magnet and the auxiliary magnet are fixed to the In the yoke body, the avoiding portion is arranged directly opposite to the auxiliary diaphragm in the vibration direction of the auxiliary diaphragm.
  • the surface of the positioning portion on the side away from the yoke is flush with the surface of the secondary pole plate on the side away from the yoke.
  • the sound generating device of the present invention provides the auxiliary magnetic steel body and the positioning part on the auxiliary magnetic steel, and the positioning part is separated from the magnetic yoke by the auxiliary magnetic steel body.
  • the side protrudes and extends, and fixes the positioning portion to the basin frame, thereby realizing the limiting positioning of the magnetic circuit system and the basin frame.
  • This structure does not use the yoke, so there is no need to adjust the magnetic gap volume of the main magnet, the auxiliary magnet, and the main magnet and the auxiliary magnet, so that the magnetic circuit can be maximized , So that the acoustic performance of the sound device is good.
  • Figure 1 is a schematic diagram of the three-dimensional structure of the sound generating device of the present invention.
  • FIG. 2 is an exploded schematic diagram of a part of the three-dimensional structure of the sound generating device of the present invention
  • Figure 3 is a cross-sectional view taken along line A-A in Figure 1;
  • Figure 4 is an enlarged view of part B shown in Figure 3;
  • FIG. 5 is a schematic diagram of the assembly structure of the magnetic circuit system of the sound device of the present invention.
  • FIG. 6 is an exploded schematic view of a part of the three-dimensional structure of the magnetic circuit system of the sound generating device of the present invention.
  • FIG. 7 is a schematic diagram of the three-dimensional structure of the secondary magnetic steel of the magnetic circuit system in the sound generating device according to another embodiment of the present invention.
  • the sound generating device 100 provided by the present invention includes a basin frame 1, a vibration system 2 and a magnetic circuit system 3.
  • the basin frame 1 is used to support the vibration system 2 and the magnetic circuit system 3, and in this embodiment, the basin frame 1 is rectangular.
  • the magnetic circuit system 3 has a magnetic gap 30, and the magnetic circuit system 3 is used to drive the vibration system 2 to vibrate and produce sound.
  • the vibration system 2 includes a diaphragm 21 fixed to the basin frame 1, a voice coil 22 inserted in the magnetic gap 30 and driving the diaphragm 21 to vibrate and produce sound, fixed to the basin frame 1 and connected to the Auxiliary diaphragms 23 that are opposed to and spaced apart from the diaphragm 21 and a skeleton 24 connecting the auxiliary diaphragm 23 and the diaphragm 21.
  • One end of the auxiliary diaphragm 23 is fixed to the basin frame 1, and the other end of the auxiliary diaphragm 23 is supported and fixed to the frame 24.
  • the diaphragm 21 is used for vibration and sound. Specifically, the diaphragm 21 includes a vibration portion 211, a folding ring portion 212 extending from the periphery of the vibration portion 211, and a side of the folding ring portion 212 away from the vibration portion 211 is bent outward.
  • the fixing portion 213 is fixed to the basin frame 1, and the folding ring portion 212 has an arc structure that is recessed in a direction away from the magnetic circuit system 3.
  • the voice coil 22 has a rectangular structure with rounded corners.
  • the auxiliary diaphragm 23 and the diaphragm 21 are spaced apart.
  • the auxiliary diaphragm 23 includes two and is respectively disposed on opposite sides of the voice coil 22.
  • the frame 24 connects the auxiliary diaphragm 23 with the diaphragm 21. More preferably, the frame 24 connects the auxiliary diaphragm 23 with the voice coil 22. Further, the frame 24 connects the auxiliary diaphragm 23 with the voice coil 22. The voice coil 22 is connected to the diaphragm 21.
  • the skeleton 24 realizes the connection of the auxiliary diaphragm 23 and the diaphragm 21, supports the diaphragm 21 to provide greater elasticity, and improves the acoustic performance; and the skeleton 24 also realizes the connection between the auxiliary diaphragm 23 and the sound
  • the top end of the coil 22 is connected to improve the vibration stability.
  • the frame 24 realizes the connection of the voice coil 22 and the diaphragm 21 to realize the voice coil 22 driving the vibration 21 to vibrate.
  • the magnetic circuit system 3 includes a magnetic yoke 31, a main magnetic steel 32 fixed to the magnetic yoke 31, and a secondary magnetic steel 33 that surrounds the main magnetic steel 32 and is spaced from the main magnetic steel 32 to form a magnetic gap 30 And a secondary pole plate 34 covering the side of the secondary magnet 33 away from the yoke 31.
  • the yoke 31 can be used to conduct magnetism and improve driving force.
  • the yoke 31 is used to fix the main magnet 32 and the auxiliary magnet 33.
  • the yoke 31 includes a yoke body 311 and an escape portion 312 formed by recessing opposite sides of the yoke body 311 in a direction away from the basin frame 1.
  • the main magnet 32 and the auxiliary magnet The steel 33 is fixed to the yoke body 311.
  • the auxiliary diaphragm 23 is fixed on the side of the basin frame 1 close to the yoke 31.
  • the relief portion 312 is arranged directly opposite to the auxiliary diaphragm 23 along the vibration direction of the auxiliary diaphragm 23.
  • the main magnet 32 and the auxiliary magnet 33 are fixed to the yoke 31 and form the magnetic gap 30 at intervals.
  • the two auxiliary diaphragms 23 are respectively arranged on opposite sides of the short axis of the main magnet 32.
  • the magnetic circuit system 3 further includes a main pole plate 35 fixed on the side of the main magnet 32 away from the yoke 31.
  • the main pole plate 35 can be used to conduct magnetism and improve driving force.
  • the secondary magnet 33 is arranged around the circumference of the main magnet 32.
  • the sub-magnet 33 includes a sub-magnet body 331 fixed to the yoke 31 and a positioning portion 332.
  • the secondary magnetic steel body is rectangular.
  • the secondary magnet body 331 has a ring shape and surrounds the magnetic gap 30 with the main magnet 32. More preferably, the orthographic projection of the main magnet 32 toward the secondary magnet body 331 along its short axis or long axis direction falls within the scope of the secondary magnet body 331. In other words, the secondary magnet body 331 is longer than the length of the main magnet 32 in its short axis or long axis direction, so as to maximize the space of the magnetic gap 30, which is beneficial to improve the sound The driving force of the ring 22.
  • the secondary magnetic steel body 331 includes a first body 331a along the long axis direction and a second body 331b along the short axis direction.
  • the surface of the first body 331a away from the main magnet 32 is flush with the edge of the yoke 31 in the vibration direction.
  • the width of the secondary magnet body 331 in the minor axis direction is the same as the width of the basin frame 1 in the minor axis direction.
  • the two opposite sides of the minor axis of the auxiliary magnetic steel body 331 respectively extend to an end of the adjacent auxiliary diaphragm 23 away from the basin frame 1.
  • the positioning portion 332 is formed by protruding and extending the secondary magnetic steel body 331 toward the diaphragm 21. That is to say, the positioning portion 332 protrudes and extends in the direction of the basin frame 1.
  • the positioning part is fixed to the basin frame.
  • the positioning portion 332 is used for limiting and positioning the magnetic circuit system 3 and the basin frame.
  • the secondary plate 34 is fixed to the basin frame 1.
  • the secondary pole plate 34 can be used to conduct magnetism and improve the driving force.
  • the secondary electrode plate 34 includes a secondary electrode plate body 341, two fixing portions 342, a positioning groove 340 and an escape hole 343.
  • the secondary pole plate body 341 is covered and fixed to the secondary magnetic steel body 331.
  • the surface of the positioning portion 332 away from the yoke 31 is flush with the surface of the secondary pole plate 34 away from the yoke 31.
  • the positioning portion 332 and the secondary pole plate body 341 are both flush on the surface away from the yoke 31. This structure facilitates the assembly of the magnetic circuit system and the basin frame.
  • the two fixing portions 342 are formed by extending opposite ends of the secondary plate body 341 to the two short axis sides of the basin frame 1 respectively.
  • the fixing portion 342 is fixed to the basin frame 1.
  • the fixing portion 342 is used to fix the magnetic circuit system 3 to the basin frame 1.
  • the structure of the fixing portion 342 does not affect the structure of the secondary pole plate body 341 and the secondary magnetic steel body 331, which can maximize the magnetic circuit system 3, effectively increase the driving force, and improve the sound performance .
  • the positioning groove 340 is formed through the secondary electrode plate 34 along the vibration direction of the vibration system 2. Specifically, the positioning groove 340 is provided in the secondary plate body 341. Wherein, the positioning groove 340 matches the positioning portion 332. That is, the shape of the positioning groove 340 matches the shape of the positioning portion 332. The positioning portion 332 passes through the positioning groove 340 and is fixed to the basin frame. This structure does not use the yoke 31, so there is no need to adjust the main magnet 32 and the auxiliary magnet 33, so that the magnetic gap 30 can be maximized, so that the magnetic circuit can be maximized. , So that the acoustic performance of the sound device is good.
  • the avoiding hole 343 is formed at an interval between the fixing portion 342 and the secondary plate body 341.
  • the two auxiliary diaphragms 23 and the avoiding holes 343 are arranged directly opposite to each other.
  • the positioning portion 332 includes a plurality of positioning portions 332 distributed symmetrically, and the positioning groove 340 includes a plurality of positioning portions 332 passing through a corresponding one of the positioning portions 332. Locating slot 340.
  • the multiple positioning grooves 340 cooperate with the positioning grooves 340 for positioning, which can make the positioning of the magnetic circuit system 3 and the basin frame 1 more accurate.
  • the positioning portion 332 includes two positioning portions 332 which are respectively located on opposite sides of the long axis of the secondary magnetic steel body 331. There are two positioning grooves 340, and each positioning portion 332 passes through a corresponding positioning groove 340.
  • the secondary magnet 33 has a rectangular shape, which includes two short-axis sides and two long-axis sides arranged in parallel, and each of the positioning portions 332 is arranged on one of the long-axis sides.
  • the symmetrically distributed structure of the two positioning portions 332 can not only realize positioning, but also make the positioning structure simple and easy to assemble and manufacture.
  • the positioning portion 332 may also be provided on opposite sides of the minor axis of the secondary magnetic steel body 331.
  • the structure may be that the positioning portion 332 includes two positioning portions 332 located on opposite sides of the minor axis of the secondary magnetic steel body 331 respectively. There are two positioning grooves 340, and each positioning portion 332 passes through a corresponding positioning groove 340.
  • the positioning portion 332 is made by a powder metallurgy process or a die-casting molding process. Of course, it is not limited to this, and other processes are also possible to make the positioning portion 332. For example, the positioning portion 332 is made first, and then glued and fixed to the secondary magnetic steel body 331.
  • the sound generating device of the present invention provides the auxiliary magnetic steel body and the positioning part on the auxiliary magnetic steel, and the positioning part is separated from the magnetic yoke by the auxiliary magnetic steel body.
  • the side protrudes and extends, and fixes the positioning portion to the basin frame, thereby realizing the limiting positioning of the magnetic circuit system and the basin frame.
  • This structure does not use the yoke, so there is no need to adjust the magnetic gap volume of the main magnet, the auxiliary magnet, and the main magnet and the auxiliary magnet, so that the magnetic circuit can be maximized , So that the acoustic performance of the sound device is good.

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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

本发明公开一种发声器件，其包括盆架和分别固定于所述盆架的振动系统及驱动所述振动系统振动发声的磁路系统；所述振动系统包括固定于所述盆架用于振动发声的振膜，所述磁路系统包括间隔设置形成磁间隙的主磁钢和副磁钢以及同时固定于所述主磁钢和副磁钢的磁轭，所述副磁钢环绕设置于所述主磁钢周侧，所述副磁钢包括固定于所述磁轭的副磁钢本体和由所述副磁钢本体朝向所述振膜凸出延伸的定位部，所述定位部固定于所述盆架。与相关技术相比，本发明的发声器件的声学性能好。

Description

发声器件 技术领域
本发明涉及电声转换领域，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
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。目前，手机的功能极其多样，其中之一便是高品质的音乐功能，因此，用于播放声音的发声器件被大量应用到现在的智能移动设备之中。
相关技术的所述发声器件包括盆架和分别固定于所述盆架的振动系统及具有磁间隙的磁路系统。所述磁路系统包括磁轭、固定于所述磁轭的主磁钢和环设于所述主磁钢并与所述主磁钢间隔形成所述磁间隙的副磁钢。
 技术问题
然而，相关技术的所述发声器件中，所述磁路系统与所述盆架部分配合定位一般通过所述磁轭设置的特征与所述盆架设置的特征进行匹配限位，比如所述磁轭设置定位柱，所述盆架设置定位孔，所述定位柱插入所述定位孔形成固定以使得所述磁路系统与所述盆架匹配限位。但是该结构因为所述磁轭的设置特征，需要所述主磁钢和所述副磁钢需要形成让位空间，造成所述磁路系统体积减小受限，从而使得发声器件的声学性能改善受限。
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
本发明的目的是克服上述技术问题是提供一种声学性能好的发声器件。
为了实现上述目的，本发明提供一种发声器件，其包括盆架和分别固定于所述盆架的振动系统及驱动所述振动系统振动发声的磁路系统；所述振动系统包括固定于所述盆架用于振动发声的振膜，所述磁路系统包括间隔设置形成磁间隙的主磁钢和副磁钢以及同时固定于所述主磁钢和副磁钢的磁轭，所述副磁钢环绕设置于所述主磁钢周侧，所述副磁钢包括固定于所述磁轭的副磁钢本体和由所述副磁钢本体朝向所述振膜凸出延伸的定位部，所述定位部固定于所述盆架。
优选的，所述副磁钢本体呈矩形，所述定位部包括两个且分别位于所述副磁钢本体长轴的相对两侧。
优选的，所述磁路系统还包括盖设于所述副磁钢远离所述磁轭一侧的副极板，所述副极板沿所述振动系统的振动方向设有贯穿其上且与所述定位部匹配的定位槽，所述定位部穿过所述定位槽并与所述盆架固定。
优选的，所述定位部包括多个，多个所述定位部呈对称分布，所述定位槽包括多个，每一所述定位部穿过其对应的一个所述定位槽。
优选的，所述副磁钢本体呈矩形，所述定位部包括两个且分别位于所述副磁钢本体长轴的相对两侧。
优选的，所述副磁钢本体包括沿长轴方向的第一本体以及沿短轴方向的第二本体，所述第一本体远离所述主磁钢的表面沿振动方向与所述磁轭边缘平齐。
优选的，所述盆架呈矩形，所述副极板还包括盖设固定于所述副磁钢本体的副极板本体和由所述副极板本体的相对两端分别向所述盆架的两个短轴边延伸两个固定部，所述固定部固定于所述盆架，所述定位槽设置于所述副极板本体。
优选的，所述副极板还包括所述固定部与所述副极板本体间隔形成的避让孔，所述振动系统还包括与所述振膜间隔设置的辅助振膜，所述辅助振膜固定于所述盆架靠近所述磁轭一侧，所述辅助振膜包括两个分别设置于所述主磁钢短轴的相对两侧，两个所述辅助振膜与所述避让孔正对设置。
优选的，所述磁轭包括磁轭本体和由所述磁轭本体相对两侧向远离所述盆架方向凹陷形成的避让部，所述主磁钢和所述副磁钢均固定于所述磁轭本体，所述避让部沿所述辅助振膜的振动方向上与所述辅助振膜正对设置。
优选的，所述定位部远离所述磁轭一侧的表面与所述副极板远离所述磁轭一侧的表面齐平。
 有益效果
与现有技术相比，本发明的发声器件通过在所述副磁钢设置所述副磁钢本体和所述定位部，所述定位部由所述副磁钢本体远离所述磁轭的一侧凸出延伸，并将所述定位部固定于所述盆架，从而实现所述磁路系统与所述盆架的限位定位。该结构没有使用到所述磁轭，所以也不需要调整所述主磁钢、所述副磁钢以及所述主磁钢和所述副磁钢的磁间隙体积，以使得磁路可以最大化，从而使发声器件的声学性能好。
 附图说明
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：
图1为本发明发声器件的立体结构示意图；
图2为本发明发声器件的部分立体结构分解示意图；
图3为沿图1中A-A线的剖示图；
图4为图3中B所示部分放大图；
图5为本发明发声器件的磁路系统的装配结构示意图；
图6为本发明发声器件的磁路系统的部分立体结构分解示意图；
图7为本发明另一种实施例的发声器件中磁路系统的副磁钢立体结构示意图。
 本发明的实施方式
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。
请同时参阅图1-6所示，本发明提供的一种发声器件100，其包括盆架1、振动系统2以及磁路系统3。
所述盆架1用于支撑所述振动系统2和所述磁路系统3，本实施方式中，所述盆架1呈矩形。所述磁路系统3具有磁间隙30，所述磁路系统3用于驱动振动系统2振动发声。
所述振动系统2包括固定于所述盆架1的振膜21、插设于所述磁间隙30并驱动所述振膜21振动发声的音圈22、固定于所述盆架1并与所述振膜21相对且间隔设置的辅助振膜23以及将所述辅助振膜23与所述振膜21连接的骨架24。所述辅助振膜23一端固定于所述盆架1，其另一端支撑固定于所述骨架24。
所述振膜21用于振动发声。具体的，所述振膜21包括振动部211、由所述振动部211的周缘弯折延伸的折环部212、由所述折环部212远离所述振动部211的一侧向外弯折延伸的固定部213以及沿所述振膜21的振动方向贯穿所述振动部211的通口210以及盖设于所述振动部211并完全覆盖所述通口210的球顶214。
所述固定部213固定于所述盆架1，所述折环部212呈向远离所述磁路系统3方向凹陷的弧形结构。
本实施方式中，所述音圈22呈带圆角的矩形结构。
所述辅助振膜23与所述振膜21间隔设置，本实施方式中，所述辅助振膜23包括两个且分别设置于所述音圈22的相对两侧。
所述骨架24将所述辅助振膜23与所述振膜21连接，更优的，所述骨架24将所述辅助振膜23与所述音圈22连接，进一步，所述骨架24将所述音圈22与所述振膜21连接。
本实施方式中，所述骨架24实现了将辅助振膜23与振膜21连接，支撑振膜21提供更大弹力，提高声学性能；而且所述骨架24还实现了将辅助振膜23与音圈22的顶端连接，提高振动稳定性，同时也所述骨架24实现了将音圈22与振膜21连接实现音圈22驱动振动21振动。
所述磁路系统3包括磁轭31、固定于所述磁轭31的主磁钢32、环绕于所述主磁钢32并与所述主磁钢32间隔形成磁间隙30的副磁钢33以及盖设于所述副磁钢33远离所述磁轭31一侧的副极板34。
所述磁轭31可用于导磁，提高驱动力。所述磁轭31用于将所述主磁钢32和所述副磁钢33固定。具体的，所述磁轭31包括磁轭本体311和由所述磁轭本体311相对两侧向远离所述盆架1方向凹陷形成的避让部312，所述主磁钢32和所述副磁钢33均固定于所述磁轭本体311。所述辅助振膜23固定于所述盆架1靠近所述磁轭31一侧。所述避让部312沿所述辅助振膜23的振动方向上与所述辅助振膜正对设置。
所述主磁钢32与所述副磁钢33固定于所述磁轭31并间隔形成所述磁间隙30。两个所述辅助振膜23分别设置于所述主磁钢32短轴的相对两侧。
在本实施方式中，所述磁路系统3还包括固定于所述主磁钢32远离所述磁轭31一侧的主极板35。所述主极板35可用于导磁，提高驱动力。
所述副磁钢33环绕设置于所述主磁钢32周侧。所述副磁钢33包括固定于所述磁轭31的副磁钢本体331和定位部332。
所述副磁钢本体呈矩形。所述副磁钢本体331呈环状且与所述主磁钢32围成所述磁间隙30。更优的，所述主磁钢32沿其短轴或长轴方向朝向所述副磁钢本体331的正投影落在所述副磁钢本体331的范围内。也就是说，所述副磁钢本体331在其短轴或者长轴方向均比所述主磁钢32的长度长，从而使所述磁间隙30的空间最大化，有利于提高对所述音圈22的驱动力。所述副磁钢本体331包括沿长轴方向的第一本体331a以及沿短轴方向的第二本体331b。在本实施方式中，所述第一本体331a远离所述主磁钢32的表面沿振动方向与所述磁轭31边缘平齐。所述副磁钢本体331短轴方向的宽度与所述盆架1短轴方向的宽度相同。所述副磁钢本体331短轴相对的两侧分别延伸至各自相邻的一个所述辅助振膜23远离所述盆架1的一端。该结构可以实现了所述磁路系统3的最大化，有效提高了驱动力，改善发声性能。
所述定位部332由所述副磁钢本体331朝向所述振膜21凸出延伸形成。也就是说所述定位部332向所述盆架1方向凸出延伸。所述定位部固定于所述盆架。所述定位部332用于将所述磁路系统3与所述盆架进行限位定位。
所述副极板34固定于所述盆架1。所述副极板34可用于导磁，提高驱动力。
所述副极板34包括副极板本体341、两个固定部342、定位槽340以及避让孔343。
所述副极板本体341盖设固定于所述副磁钢本体331。在本实施方式中，所述定位部332远离所述磁轭31一侧的表面与所述副极板34远离所述磁轭31一侧的表面齐平。也就是说，所述定位部332与所述副极板本体341均在远离所述磁轭31一侧的表面齐平。该结构有利于所述磁路系统与所述盆架的装配。
两个所述固定部342由所述副极板本体341的相对两端分别向所述盆架1的两个短轴边延伸形成。所述固定部342固定于所述盆架1。所述固定部342用于将所述磁路系统3固定于所述盆架1。所述固定部342的结构不影响到所述副极板本体341和所述副磁钢本体331的结构，可以实现了所述磁路系统3的最大化，有效提高了驱动力，改善发声性能。
所述定位槽340沿所述振动系统2的振动方向贯穿所述副极板34上形成。具体的，所述定位槽340设置于所述副极板本体341。其中，所述定位槽340与所述定位部332匹配。也就是所述定位槽340的形状与所述定位部332的形状相匹配。所述定位部332穿过所述定位槽340并与所述盆架固定。该结构没有使用到所述磁轭31，所以也不需要调整所述主磁钢32和所述副磁钢33，从而使所述磁间隙30可以做到最大化，以使得磁路可以最大化，从而使发声器件的声学性能好。
所述避让孔343为所述固定部342与所述副极板本体341间隔形成。两个所述辅助振膜23与所述避让孔343正对设置。
为了更好的定位，所述定位部332包括多个，多个所述定位部332呈对称分布，所述定位槽340包括多个，每一所述定位部332穿过于与其对应的一个所述定位槽340。多个所述定位槽340与所述定位槽340配合定位，可以使所述磁路系统3和所述盆架1的定位更为准确。
在本实施例中，所述定位部332包括两个且分别位于所述副磁钢本体331长轴的相对两侧。所述定位槽340包括两个，每一所述定位部332穿过与其对应的一个所述定位槽340。具体的，所述副磁钢33呈矩形，其包括相关平行设置的两个短轴边和两个长轴边，每一所述定位部332设置于其中一个长轴边。两个所述定位部332对称分布的结构既可以实现定位，而且可以使该定位结构简单，易于装配和制造。
当然，不限于此，所述定位部332还可以设置于所述副磁钢本体331短轴的相对两侧也是可以的。请参阅图7所示，在另外一个实施例中，该结构可以为：所述定位部332包括两个且分别位于所述副磁钢本体331短轴的相对两侧。所述定位槽340包括两个，每一所述定位部332穿过于与其对应的一个所述定位槽340。
在本实施方式中，所述定位部332为粉末冶金工艺或压铸成型工艺制成。当然，不限于此，其他工艺将所述定位部332制成也是可以的，比如先做出所述定位部332，在用胶水方式贴合固定于所述副磁钢本体331。
与现有技术相比，本发明的发声器件通过在所述副磁钢设置所述副磁钢本体和所述定位部，所述定位部由所述副磁钢本体远离所述磁轭的一侧凸出延伸，并将所述定位部固定于所述盆架，从而实现所述磁路系统与所述盆架的限位定位。该结构没有使用到所述磁轭，所以也不需要调整所述主磁钢、所述副磁钢以及所述主磁钢和所述副磁钢的磁间隙体积，以使得磁路可以最大化，从而使发声器件的声学性能好。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其它相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (10)

  1. 一种发声器件，其包括盆架和分别固定于所述盆架的振动系统及驱动所述振动系统振动发声的磁路系统；所述振动系统包括固定于所述盆架用于振动发声的振膜，其特征在于，所述磁路系统包括间隔设置形成磁间隙的主磁钢和副磁钢以及同时固定于所述主磁钢和副磁钢的磁轭，所述副磁钢环绕设置于所述主磁钢周侧，所述副磁钢包括固定于所述磁轭的副磁钢本体和由所述副磁钢本体朝向所述振膜凸出延伸的定位部，所述定位部固定于所述盆架。
  2. 根据权利要求1所述的发声器件，其特征在于，所述副磁钢本体呈矩形，所述定位部包括两个且分别位于所述副磁钢本体长轴的相对两侧。
  3. 根据权利要求1所述的发声器件，其特征在于，所述磁路系统还包括盖设于所述副磁钢远离所述磁轭一侧的副极板，所述副极板沿所述振动系统的振动方向设有贯穿其上且与所述定位部匹配的定位槽，所述定位部穿过所述定位槽并与所述盆架固定。
  4. 根据权利要求3所述的发声器件，其特征在于，所述定位部包括多个，多个所述定位部呈对称分布，所述定位槽包括多个，每一所述定位部穿过其对应的一个所述定位槽。
  5. 根据权利要求4所述的发声器件，其特征在于，所述副磁钢本体包括沿长轴方向的第一本体以及沿短轴方向的第二本体，所述第一本体远离所述主磁钢的表面沿振动方向与所述磁轭边缘平齐。
  6. 根据权利要求4所述的发声器件，其特征在于，所述副磁钢本体呈矩形，所述定位部包括两个且分别位于所述副磁钢本体短轴的相对两侧。
  7. 根据权利要3所述的发声器件，其特征在于，所述盆架呈矩形，所述副极板还包括盖设固定于所述副磁钢本体的副极板本体和由所述副极板本体的相对两端分别向所述盆架的两个短轴边延伸两个固定部，所述固定部固定于所述盆架，所述定位槽设置于所述副极板本体。
  8. 根据权利要求7所述的发声器件，其特征在于，所述副极板还包括所述固定部与所述副极板本体间隔形成的避让孔，所述振动系统还包括与所述振膜间隔设置的辅助振膜，所述辅助振膜固定于所述盆架靠近所述磁轭一侧，所述辅助振膜包括两个分别设置于所述主磁钢短轴的相对两侧，两个所述辅助振膜与所述避让孔正对设置。
  9. 根据权利要求8所述的发声器件，其特征在于，所述磁轭包括磁轭本体和由所述磁轭本体相对两侧向远离所述盆架方向凹陷形成的避让部，所述主磁钢和所述副磁钢均固定于所述磁轭本体，所述避让部沿所述辅助振膜的振动方向上与所述辅助振膜正对设置。
  10. 根据权利要求3所述的发声器件，其特征在于，所述定位部远离所述磁轭一侧的表面与所述副极板远离所述磁轭一侧的表面齐平。
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