WO2024045280A1 - 扬声器 - Google Patents

扬声器 Download PDF

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Publication number
WO2024045280A1
WO2024045280A1 PCT/CN2022/125118 CN2022125118W WO2024045280A1 WO 2024045280 A1 WO2024045280 A1 WO 2024045280A1 CN 2022125118 W CN2022125118 W CN 2022125118W WO 2024045280 A1 WO2024045280 A1 WO 2024045280A1
Authority
WO
WIPO (PCT)
Prior art keywords
speaker
voice coil
plywood
body part
circuit board
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/CN2022/125118
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English (en)
French (fr)
Inventor
时阳
周家盛
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 Microtech Changzhou Co Ltd
Original Assignee
AAC Microtech Changzhou Co 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 Microtech Changzhou Co Ltd filed Critical AAC Microtech Changzhou Co Ltd
Priority to JP2022576872A priority Critical patent/JP7637704B2/ja
Priority to US18/090,458 priority patent/US12149910B2/en
Publication of WO2024045280A1 publication Critical patent/WO2024045280A1/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
    • 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
    • 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 present invention relates to the field of electroacoustic conversion, and in particular to a loudspeaker.
  • Speakers in the related art usually include a basin frame and a vibration system and a magnetic circuit system fixed on the basin frame.
  • the vibration system includes a diaphragm and a voice coil that drives the diaphragm to vibrate and produce sound.
  • the magnetic circuit system includes a lower The plywood, the main magnet steel and the auxiliary magnet steel are fixed to the lower plywood and arranged at intervals. A magnetic gap is formed between the main magnet steel and the auxiliary magnet steel, and the voice coil is placed in the magnetic gap. When the overall height of the speaker is high, the voice coil is far away from the magnetic circuit system, and the magnetic circuit magnetic field cannot be fully utilized, which reduces the BL value of the voice coil.
  • the purpose of the present invention is to overcome the above technical problems and provide a speaker with improved BL value of the voice coil.
  • the present invention provides a speaker, which includes a basin frame and a vibration system and a magnetic circuit system fixed on the basin frame.
  • the vibration system includes a diaphragm and a sound driver that drives the diaphragm to vibrate and produce sound.
  • the magnetic circuit system includes a lower plywood, a first main magnet and a first auxiliary magnet fixed to the lower plywood and spaced apart from each other. The first main magnet is attached to a distance away from the lower plywood.
  • the main pole core on the side and the upper splint attached to the side of the first auxiliary magnet away from the lower splint, the upper splint includes a body part and a groove recessed from the body part toward the lower splint,
  • the groove includes a bottom plate and a connecting arm connecting the body part and the bottom plate.
  • the bottom plate is closer to the lower splint than the body part.
  • the speaker also includes a second speaker placed in the groove. Secondary magnetic steel, the bottom plate is sandwiched between the first secondary magnetic steel and the second secondary magnetic steel.
  • the speaker further includes a second main magnet attached to the side of the main pole core away from the first main magnet.
  • the upper splint is a hollow annular structure, and the groove is located on the long axis side of the upper splint.
  • the vibration system further includes a flexible circuit board connected to the voice coil assembly, and the flexible circuit board includes a first fixing part connected to the basin frame and a second fixing part connected to the voice coil assembly. and an elastic arm connecting the first fixing part and the second fixing part, and the flexible circuit board is located on the short axis side of the speaker.
  • the flexible circuit board is located between the upper plywood and the lower plywood, and the projection of the elastic arm of the flexible circuit board along the vibration direction of the diaphragm is located on the lower plywood.
  • the first auxiliary magnet is located on the long axis side of the speaker.
  • the height of the second secondary magnet is equal to the height of the groove.
  • the voice coil assembly includes a ball top and a folded ring portion connecting the ball top and the basket, the ball top is located on a side of the folded ring portion close to the magnetic circuit system, and the voice coil assembly Fixedly connected to the top of the ball.
  • the voice coil assembly includes a skeleton connected to the top of the ball and a voice coil connected to the skeleton.
  • the speaker of the present invention provides a groove on the lower splint for placing the second secondary magnet, which effectively improves the performance of the magnetic circuit system and at the same time increases the BL value of the voice coil.
  • Figure 1 is a perspective view of the speaker of the present invention
  • Figure 2 is an exploded perspective view of the speaker of the present invention
  • Figure 3 is a cross-sectional view along line A-A in Figure 1;
  • Figure 4 is a partial view along line B-B in Figure 1;
  • Figure 5 is an assembly diagram of the magnetic circuit system of the speaker of the present invention.
  • the present invention provides a speaker 100 .
  • the speaker 100 includes a basin frame 10 and a vibration system 20 and a magnetic circuit system 30 fixed on the basin frame 10 .
  • the vibration system 20 includes a diaphragm 21 , a voice coil component 22 that drives the diaphragm 21 to vibrate and produce sound, and a flexible circuit board 23 connected to the voice coil component 22 .
  • the diaphragm 21 includes a spherical top part 211 and a ring part 212 fixed to the basket 10 and the dome 211.
  • the spherical top part 211 is located on the side of the ring part 212 close to the magnetic circuit system 30.
  • the voice coil assembly 22 is fixedly connected to the ball top 211 .
  • the voice coil assembly 22 includes a skeleton 221 connected to the ball top 211 and a voice coil 222 connected to the skeleton 221 .
  • the arrangement of the skeleton 221 can make the voice coil 222 closer to the magnetic circuit system 30, thereby improving the BL value of the voice coil 222.
  • the flexible circuit board 23 includes a first fixing part 231 connected to the basket 10 , a second fixing part 232 connected to the voice coil 222 , and an elastic force connecting the first fixing part 231 and the second fixing part 232 .
  • Arm 233, the flexible circuit board 23 is located on the short axis side of the speaker 100.
  • the flexible circuit board 23 is not only electrically connected to the voice coil 222, but can also provide fixed support for the voice coil 222.
  • the magnetic circuit system 30 includes a lower plywood 31, a first main magnet 321 and a first auxiliary magnet 322 fixed to the lower plywood 31 and arranged at intervals.
  • a main pole core 331 of a main magnet 321 on a side away from the lower plywood 31 an upper splint 332 attached to a side of the first auxiliary magnet 322 away from the lower plywood 31 , and an upper plywood 332 attached to the main pole.
  • the core 331 is away from the second main magnet 341 on one side of the first main magnet 321.
  • a magnetic gap 301 is formed between the first main magnet 321 and the first auxiliary magnet 322, and the voice coil 222 is located in the magnetic gap 301.
  • the first auxiliary magnet 322 is only located on the long axis side of the speaker 100, and the first auxiliary magnet 322 is not provided on the short axis side of the speaker 100 to provide vibration space for the elastic arm 233 of the flexible circuit board 23. That is, the flexible circuit board 23 is located between the upper clamping plate 332 and the lower clamping plate 31 , and the projection of the elastic arm 233 of the flexible circuit board 23 along the vibration direction of the diaphragm 21 is located on the lower clamping plate 31 .
  • the lower clamping plate 31 is provided with an extension portion 310 that is bent and extended in the direction of the vibration system 20 . The extension portion 310 is located on the short axis side of the lower clamping plate 31 .
  • the upper clamping plate 332 includes a body part 3323 and a groove 3320 that is recessed from the body part 3323 toward the lower clamping plate 31 .
  • the groove 3320 includes a bottom plate 3321 and connects the body part 3323 and The connecting arm 3322 of the bottom plate 3321 is closer to the lower clamping plate 31 than the body part 3323.
  • the speaker 100 also includes a second secondary magnet 342 placed in the groove 3320, so The bottom plate 3321 is sandwiched between the first auxiliary magnet 322 and the second auxiliary magnet 342 . Therefore, the internal space of the speaker 100 is fully utilized, so that the voice coil 222 can better utilize the magnetic field, and the BL value of the voice coil 222 is effectively improved.
  • the upper splint 332 has a hollow annular structure, and the groove 3320 is only provided on the long axis side of the upper splint 332 .
  • the short axis side of the upper plywood 332 is higher than the long axis side of the upper plywood 332 .
  • the short axis side of the upper plywood 332 can provide a vibration space for the flexible circuit board 23 and improve the performance of the speaker 100 .
  • the bottom plate 3321 of the groove 3320 is parallel to the body part 3323, and the connecting arm 3322 is perpendicular to the bottom plate 3321 and the body part 3323.
  • the height of the second auxiliary magnet 342 is flush with the height of the groove 3320 , that is, the upper surface of the second auxiliary magnet 342 and the upper surface of the main body 3323 are on the same plane.
  • the speaker 100 is further provided with an upper cover 50 for fixing the diaphragm 21 and a breathable isolator 40 covering the upper cover 50 .
  • the speaker of the present invention provides a groove 3320 on the lower splint 31 for placing the second secondary magnet 342, which effectively improves the performance of the magnetic circuit system 30 and at the same time increases the BL value of the voice coil 22.

Landscapes

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

Abstract

本发明提供了一种扬声器，其包括盆架以及振动系统和磁路系统，所述磁路系统包括下夹板、固定于所述下夹板且间隔设置的第一主磁钢和第一副磁钢、贴设于所述第一主磁钢远离所述下夹板一侧的主极芯以及贴设于所述第一副磁钢远离所述下夹板一侧的上夹板，所述上夹板包括本体部以及自所述本体部向所述下夹板凹陷的凹槽，所述凹槽包括底板以及连接所述本体部和所述底板的连接臂，所述底板比所述本体部更靠近所述下夹板，所述扬声器还包括置于所述凹槽中的第二副磁钢，所述底板夹设在所述第一副磁钢和第二副磁钢之间。本发明的扬声器提高了音圈的BL值。

Description

扬声器
【 技术领域】
本发明涉及电声转换领域，尤其涉及一种扬声器。
【 背景技术】
随着移动互联网时代的到来，电子产品的更新换代越来越快，人们对电子产品的各方面性能的要求也越来越高，其中之一便是高品质的音乐功能，因此，电声系统需要不断的提升性能，高品质的扬声器便是实现这个高品质音乐功能的必备条件之一。
相关技术的扬声器通常包括盆架以及固定于所述盆架上的振动系统和磁路系统，所述振动系统包括振膜和驱动所述振膜振动发声的音圈，所述磁路系统包括下夹板、固定于所述下夹板且间隔设置的主磁钢和副磁钢，主磁钢和副磁钢之间形成磁间隙，音圈置于磁间隙中。当扬声器整体高度较高时，音圈距离磁路系统较远，不能充分利用磁路磁场，降低了音圈的BL值。
因此，实有必要提供一种新的扬声器解决上述技术问题。
【 发明内容】
本发明的目的是克服上述技术问题，提供一种提高了音圈的BL值的扬声器。
为了实现上述目的，本发明提供了一种扬声器，其包括盆架以及固定于所述盆架上的振动系统和磁路系统，所述振动系统包括振膜和驱动所述振膜振动发声的音圈组件，所述磁路系统包括下夹板、固定于所述下夹板且间隔设置的第一主磁钢和第一副磁钢、贴设于所述第一主磁钢远离所述下夹板一侧的主极芯以及贴设于所述第一副磁钢远离所述下夹板一侧的上夹板，所述上夹板包括本体部以及自所述本体部向所述下夹板凹陷的凹槽，所述凹槽包括底板以及连接所述本体部和所述底板的连接臂，所述底板比所述本体部更靠近所述下夹板，所述扬声器还包括置于所述凹槽中的第二副磁钢，所述底板夹设在所述第一副磁钢和第二副磁钢之间。
优选的，所述扬声器还包括贴设于所述主极芯远离所述第一主磁钢一侧的第二主磁钢。
优选的，所述上夹板为中空环状结构，所述凹槽位于上夹板的长轴边。
优选的，所述振动系统还包括与所述音圈组件连接的柔性线路板，所述柔性线路板包括与所述盆架连接第一固定部、与所述音圈组件连接的第二固定部以及连接所述第一固定部和第二固定部的弹力臂，所述柔性线路板位于所述扬声器的短轴边。
优选的，所述柔性线路板位于所述上夹板和下夹板之间，所述柔性线路板的弹力臂沿所述振膜的振动方向的投影位于所述下夹板。
优选的，所述第一副磁钢位于所述扬声器的长轴边。
优选的，所述第二副磁钢的高度等于所述凹槽的高度。
优选的，所述音圈组件包括球顶部以及连接所述球顶部和盆架的折环部，所述球顶部位于所述折环部靠近所述磁路系统的一侧，所述音圈组件与所述球顶部固定连接。
优选的，所述音圈组件包括与所述球顶部连接的骨架和与所述骨架连接的音圈。
本发明的扬声器通过在下夹板设置凹槽用于放置第二副磁钢，有效提高了磁路系统的性能，同时提升了音圈的BL值。
【 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，对于本发明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为本发明的扬声器的立体图；
图2为本发明的扬声器的立体分解图；
图3为沿图1中A-A线的剖视图；
图4为沿图1中B-B线的部视图；
图5为本发明的扬声器的磁路系统组装图。
【具体实施方式】
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，本发明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。
请参阅图1-4所示，本发明提供一种扬声器100，所述扬声器100包括盆架10以及固定于所述盆架10上的振动系统20和磁路系统30。
所述振动系统20包括振膜21、驱动所述振膜21振动发声的音圈组件22以及与所述音圈组件22连接的柔性线路板23。所述振膜21包括球顶部211以及与所述盆架10和球顶211固定的折环部212，所述球顶部211位于所述折环部212靠近所述磁路系统30的一侧，所述音圈组件22与球顶部211固定连接。具体的，所述音圈组件22包括与所述球顶部211连接的骨架221和与所述骨架221连接的音圈222。骨架221的设置，可以使得音圈222离磁路系统30更近，从而提升音圈222的BL值。所述柔性线路板23包括与所述盆架10连接第一固定部231、与所述音圈222连接的第二固定部232以及连接所述第一固定部231和第二固定部232的弹力臂233，所述柔性线路板23位于所述扬声器100的短轴边，柔性线路板23不仅与所述音圈222电连接，还可以给音圈222提供固定支撑。
一并参照图5所示，所述磁路系统30包括下夹板31、固定于所述下夹板31且间隔设置的第一主磁钢321和第一副磁钢322、贴设于所述第一主磁钢321远离所述下夹板31一侧的主极芯331、贴设于所述第一副磁钢322远离所述下夹板31一侧的上夹板332以及贴设于所述主极芯331远离所述第一主磁钢321一侧的第二主磁钢341。第一主磁钢321和第一副磁钢322之间形成磁间隙301，音圈222位于磁间隙301中。具体的，第一副磁钢322仅位于扬声器100的长轴边，扬声器100的短轴边不设置第一副磁钢322，可供柔性线路板23的弹力臂233提供振动空间。即，柔性线路板23位于上夹板332和下夹板31之间，柔性线路板23的弹力臂233沿振膜21的振动方向的投影位于下夹板31。另外，，下夹板31设有向振动系统20方向弯折延伸的延伸部310，延伸部310位于下夹板31的短轴边。
在本实施方式中，所述上夹板332包括本体部3323以及自所述本体部3323向所述下夹板31凹陷的凹槽3320，所述凹槽3320包括底板3321以及连接所述本体部3323和所述底板3321的连接臂3322，所述底板3321比所述本体部3323更靠近所述下夹板31，所述扬声器100还包括置于所述凹槽3320中的第二副磁钢342，所述底板3321夹设在所述第一副磁钢322和第二副磁钢342之间。由此，充分利用了扬声器100的内部空间，使得音圈222更好的利用磁场，有效提高音圈222的BL值。
进一步的，上夹板332为中空环状结构，凹槽3320仅设置于上夹板332的长轴边。上夹板332的短轴边高于上夹板332的长轴边，上夹板332的短轴边可为柔性线路板23提供振动空间，提高扬声器100的性能。
另外，凹槽3320的底板3321与本体部3323平行，连接臂3322垂直于底板3321和本体部3323。另外，第二副磁钢342的高度与凹槽3320的高度齐平，即第二副磁钢342的上表面与本体部3323的上表面在同一平面。
另外，所述扬声器100还设有固定所述振膜21的上盖50和盖设在所述上盖50的透气隔离件40。
本发明的扬声器通过在下夹板31设置凹槽3320用于放置第二副磁钢342，有效提高了磁路系统30的性能，同时提升了音圈22的BL值。
以上所述的仅是本发明的实施方式，在此应当指出，对于本发明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 (9)

  1. 一种扬声器，其包括盆架以及固定于所述盆架上的振动系统和磁路系统，所述振动系统包括振膜和驱动所述振膜振动发声的音圈组件，所述磁路系统包括下夹板、固定于所述下夹板且间隔设置的第一主磁钢和第一副磁钢、贴设于所述第一主磁钢远离所述下夹板一侧的主极芯以及贴设于所述第一副磁钢远离所述下夹板一侧的上夹板，其特征在于，所述上夹板包括本体部以及自所述本体部向所述下夹板凹陷的凹槽，所述凹槽包括底板以及连接所述本体部和所述底板的连接臂，所述底板比所述本体部更靠近所述下夹板，所述扬声器还包括置于所述凹槽中的第二副磁钢，所述底板夹设在所述第一副磁钢和第二副磁钢之间。
  2. 根据权利要求1所述的扬声器，其特征在于，所述扬声器还包括贴设于所述主极芯远离所述第一主磁钢一侧的第二主磁钢。
  3. 根据权利要求1所述的扬声器，其特征在于，所述上夹板为中空环状结构，所述凹槽位于上夹板的长轴边。
  4. 根据权利要求1所述的扬声器，其特征在于，所述振动系统还包括与所述音圈组件连接的柔性线路板，所述柔性线路板包括与所述盆架连接第一固定部、与所述音圈组件连接的第二固定部以及连接所述第一固定部和第二固定部的弹力臂，所述柔性线路板位于所述扬声器的短轴边。
  5. 根据权利要求4所述的扬声器，其特征在于，所述柔性线路板位于所述上夹板和下夹板之间，所述柔性线路板的弹力臂沿所述振膜的振动方向的投影位于所述下夹板。
  6. 根据权利要求5所述的扬声器，其特征在于，所述第一副磁钢位于所述扬声器的长轴边。
  7. 根据权利要求1所述的扬声器，其特征在于，所述第二副磁钢的高度等于所述凹槽的高度。
  8. 根据权利要求1所述的扬声器，其特征在于，所述音圈组件包括球顶部以及连接所述球顶部和盆架的折环部，所述球顶部位于所述折环部靠近所述磁路系统的一侧，所述音圈组件与所述球顶部固定连接。
  9. 根据权利要求8所述的扬声器，其特征在于，所述音圈组件包括与所述球顶部连接的骨架和与所述骨架连接的音圈。
PCT/CN2022/125118 2022-09-02 2022-10-13 扬声器 Ceased WO2024045280A1 (zh)

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WO2025241069A1 (zh) * 2024-05-20 2025-11-27 瑞声光电科技(常州)有限公司 一种扬声器模组
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CN212305657U (zh) * 2020-11-30 2021-01-05 共达电声股份有限公司 一种扬声器
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US20200053480A1 (en) * 2018-08-09 2020-02-13 AAC Technologies Pte. Ltd. Speaker
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