WO2024031827A1 - 扬声器 - Google Patents

扬声器 Download PDF

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Publication number
WO2024031827A1
WO2024031827A1 PCT/CN2022/125113 CN2022125113W WO2024031827A1 WO 2024031827 A1 WO2024031827 A1 WO 2024031827A1 CN 2022125113 W CN2022125113 W CN 2022125113W WO 2024031827 A1 WO2024031827 A1 WO 2024031827A1
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WO
WIPO (PCT)
Prior art keywords
voice coil
flexible circuit
circuit board
speaker according
hole
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/CN2022/125113
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English (en)
French (fr)
Inventor
时阳
吴树文
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 JP2022574302A priority Critical patent/JP7637703B2/ja
Priority to US18/090,460 priority patent/US12267660B2/en
Publication of WO2024031827A1 publication Critical patent/WO2024031827A1/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
    • H04R9/06—Loudspeakers

Definitions

  • the present invention relates to the field of electroacoustic conversion, and in particular to a loudspeaker.
  • Loudspeakers 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, a voice coil that drives the diaphragm to vibrate and produce sound, and a flexible ring fixedly connected to the voice coil.
  • a circuit board, the flexible circuit board includes a first fixing part connected to the voice coil, a second fixing part connected to the basin frame, and an elastic arm connecting the first fixing part and the second fixing part, so
  • the magnetic circuit system includes a lower splint fixed to the basin frame. The projection of the elastic arm along the vibration direction of the diaphragm is located on the lower splint. Therefore, during the vibration process, the elastic arm can easily contact the lower splint, which limits the elastic arm. The movement affects the performance of the product.
  • the purpose of the present invention is to overcome the above technical problems and provide a speaker that improves product performance.
  • the present invention provides a speaker, which includes a basin frame, 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.
  • coil and a flexible circuit board fixedly connected to the voice coil.
  • the flexible circuit board includes a first fixing part connected to the voice coil, a second fixing part connected to the basin frame, and a second fixing part connected to the first fixing part. and an elastic arm of the second fixing part.
  • the magnetic circuit system includes a lower plywood and a main magnet and a auxiliary magnet fixed to the lower plywood and arranged at intervals.
  • the auxiliary magnet surrounds the main magnet and forms a There is a magnetic gap, the voice coil is placed in the magnetic gap, the lower splint is provided with a through hole, the projection of the elastic arm along the vibration direction of the diaphragm is at least partially located in the through hole, and the speaker is also provided with There is a connecting piece connected to the outer surface of the lower plywood and covering the through hole.
  • the flexible circuit board is located on the side of the voice coil away from the diaphragm, and the first fixing part is connected to the lower surface of the voice coil.
  • the lower clamping plate includes an inner surface close to the vibration system and an outer surface opposite to the inner surface.
  • the lower clamping plate is provided with a groove that is recessed from the outer surface to the inner surface, and the through hole passes through it.
  • the groove, the connecting piece is located in the groove.
  • the connecting piece is a steel piece, a polycarbonate piece, or a polyester resin piece.
  • the voice coil is in the shape of a track
  • the flexible circuit board includes four, and they are located at the corners of the voice coil.
  • connecting pieces there are four connecting pieces, and the connecting pieces correspond to the through holes one by one.
  • each connecting piece covers two of the through holes.
  • the connecting piece is provided with a hollow annular structure, which includes a main body part covering the through hole and a connecting arm connecting adjacent main body parts.
  • the magnetic circuit system further includes a main pole core attached to the main magnetic steel and a secondary pole core attached to the secondary magnetic steel.
  • the secondary pole core is provided with a flexible circuit board. Make way for the hole.
  • the speaker of the present invention increases the vibration space of the flexible circuit board and improves the performance of the product by arranging a through hole corresponding to the flexible circuit board on the lower splint.
  • Figure 1 is a perspective view of a speaker according to Embodiment 1 of the present invention.
  • Figure 2 is an exploded perspective view of the speaker according to Embodiment 1 of the present invention.
  • Figure 3 is a cross-sectional view along line A-A in Figure 1;
  • Figure 4 is a partially exploded view of the speaker according to Embodiment 1 of the present invention.
  • Figure 5 is a partially exploded view of the speaker according to Embodiment 2 of the present invention.
  • FIG. 6 is a partially exploded view of the speaker according to Embodiment 3 of the present invention.
  • a speaker 100 provided for Embodiment 1 of the present invention 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 The diaphragm 21 , the voice coil 22 that drives the diaphragm 21 to vibrate and produce sound, and the flexible circuit board 23 fixedly connected to the voice coil 22 .
  • the magnetic circuit system 30 includes a lower plywood 31, a main magnetic steel 321 and a secondary magnetic steel 322 fixed to the lower plywood 31 and arranged at intervals, a main pole core 331 attached to the main magnetic steel 321, and a main pole core 331 attached to the main magnetic steel 321.
  • the secondary pole core 332 of the secondary magnetic steel 322 surrounds the main magnetic steel 321 and forms a magnetic gap 301.
  • the voice coil 22 is in the shape of a track and is placed in the magnetic gap 301.
  • the flexible circuit board 23 includes a first fixing part 231 connected to the voice coil 22 , a second fixing part 232 connected to the frame 10 , and a first fixing part 231 and a second fixing part 232 connected to each other. Elastic arm 233.
  • the flexible circuit board 23 is placed in the magnetic gap 301, and the flexible circuit board 301 is located on the side of the voice coil 22 away from the diaphragm 21.
  • the first fixing part 231 is connected to the lower surface of the voice coil 22, which is where the flexible circuit board 23 is fixed and supported.
  • the voice coil 22 is electrically connected to the voice coil 22 .
  • there are four flexible circuit boards 23 and they are respectively located at the corners of the voice coil 22 .
  • the sub-pole core 332 is provided with a relief hole 3320 for accommodating the flexible circuit board 23.
  • the lower clamping plate 31 is provided with a through hole 310, and the projection of the elastic arm 233 of the flexible circuit board 23 along the vibration direction of the diaphragm 21 is at least partially located in the through hole 310, that is, the through hole 310 of the lower clamping plate 31 can increase the elastic force.
  • the vibration space of arm 233 there are four through holes 310 , and the through holes 310 correspond to the flexible circuit board 23 one-to-one.
  • the speaker 100 is also provided with a connecting piece 40 covering the through hole 310 , and the connecting piece 40 is connected to the outer surface of the lower clamping plate 31 .
  • the connecting piece 40 is a steel piece, which can increase the strength of the magnetic circuit system; in other embodiments, the connecting piece can also be a polycarbonate piece or a polyester resin piece, so that the through hole can also ensure air leakage. The connecting piece prevents dust from entering. In other embodiments, the connecting piece 40 can also be made of other materials.
  • the lower clamping plate 31 includes an inner surface 311 close to the vibration system 20 and an outer surface 312 opposite to the inner surface 311 .
  • the groove 313 is recessed toward the inner surface 311 , the through hole 310 passes through the groove 313 , and the connecting piece 40 is located in the groove 313 , so that the arrangement of the connecting piece 40 does not increase the overall size of the speaker 100 high.
  • connecting pieces 40 there are four connecting pieces 40 , and the connecting pieces 40 correspond to the through holes 310 one-to-one.
  • FIG. 5 it is a speaker 200 according to the second embodiment of the present invention.
  • the speaker 200 in the second embodiment has two connecting pieces 40', each of which is The connecting piece 40' covers the two through holes 310'.
  • FIG. 6 it is a speaker 300 according to the third embodiment of the present invention.
  • the connecting piece 40 ′′ of the speaker 300 according to the third embodiment is provided with an annular structure. , which includes a main body part 41'' covering the through hole 310'' and a connecting arm 42'' connecting the adjacent main body parts 41''.
  • the speaker of the present invention increases the vibration space of the flexible circuit board and improves the performance of the product by arranging a through hole corresponding to the flexible circuit board on the lower splint.

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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、驱动所述振膜振动发声的音圈以及与所述音圈固定连接的柔性电路板，所述柔性电路板包括与所述音圈连接的第一固定部、与所述盆架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，所述磁路系统包括下夹板以及固定于所述下夹板且间隔设置的主磁钢和副磁钢，所述下夹板设有通孔，所述弹力臂沿所述振膜振动方向的投影至少部分位于所述通孔，所述扬声器还设有与所述下夹板的外表面连接并覆盖所述通孔的连接片。本发明的扬声器提高了产品的性能。

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盆架上的振动系统和磁路系统，所述振动系统包括振膜、驱动所述振膜振动发声的音圈以及与所述音圈固定连接的柔性电路板，所述柔性电路板包括与所述音圈连接的第一固定部、与所述盆架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，所述磁路系统 包括固定于盆架的下夹板，所述弹力臂沿所述振膜的振动方向的投影位于下夹板，因此弹力臂在振动过程中，很容易接触到下夹板，限制了弹力臂的运动，影响了产品的性能。
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，提供一种提高产品性能的扬声器。
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、驱动所述振膜振动发声的音圈以及与所述音圈固定连接的柔性电路板，所述柔性电路板包括与所述音圈连接的第一固定部、与所述盆架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，所述磁路系统包括下夹板以及固定于所述下夹板且间隔设置的主磁钢和副磁钢，所述副磁钢环绕所述主磁钢并形成磁间隙，所述音圈置于所述磁间隙中，所述下夹板设有通孔，所述弹力臂沿所述振膜振动方向的投影至少部分位于所述通孔，所述扬声器还设有与所述下夹板的外表面连接并覆盖所述通孔的连接片。
优选的，所述柔性电路板位于所述音圈远离所述振膜一侧，并且所述第一固定部与所述音圈的下表面连接。
优选的，所述下夹板包括靠近所述振动系统的内表面和与所述内表面相对的外表面，所述下夹板设有自所述外表面向内表面凹陷的凹槽，所述通孔贯穿所述凹槽，所述连接片位于所述凹槽中。
优选的，所述连接片为钢片，或聚碳酸酯片，或涤纶树脂片。
优选的，所述音圈为跑道形，所述柔性电路板包括四个，并且分别位于所述音圈的角部，所述通孔也设有四个，并且所述通孔与柔性电路板一一对应。
优选的，所述连接片设有四个，并且所述连接片与所述通孔一一对应。
优选的，所述连接片设有两个，每个所述连接片覆盖两个所述通孔。
优选的，所述连接片设有一个并呈中空环状结构，其包括覆盖所述通孔的主体部和连接相邻所述主体部的连接臂。
优选的，所述磁路系统还包括贴附在所述主磁钢的主极芯和贴附在所述副磁钢的副极芯，所述副极芯设有容纳所述柔性电路板的让位孔。
本发明的扬声器通过在下夹板设置与所述柔性电路板对应的通孔，增大了柔性电路板的振动空间，提高产品的性能。
【 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为本发明的实施例一的扬声器的立体图；
图2为本发明的实施例一的扬声器的立体分解图；
图3为沿图1中A-A线的剖面视图；
图4为本发明的实施例一的扬声器的部分分解图；
图5为本发明的实施例二的扬声器的部分分解图；
图6为本发明的实施例三的扬声器的部分分解图。
【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。
实施例一
请参阅图1-3所示，为本发明实施例一提供的扬声器100，其包括盆架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22以及与所述音圈22固定连接的柔性电路板23。所述磁路系统30包括下夹板31、固定于所述下夹板31且间隔设置的主磁钢321和副磁钢322、贴附于所述主磁钢321的主极芯331以及贴附于所述副磁钢322的副极芯332，所述副磁钢322环绕所述主磁钢321并形成磁间隙301，所述音圈22呈跑道形并置于所述磁间隙301中。
所述柔性电路板23包括与所述音圈22连接的第一固定部231、与所述盆架10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。柔性电路板23置于磁间隙301中，并且柔性电路板301位于音圈22远离振膜21的一侧，第一固定部231与音圈22的下表面连接，即柔性电路板23固定支撑所述音圈22，并且与音圈22电性连接。具体的，所述柔性电路板23设有四个，并且分别位于所述音圈22的角部。另外，所述副极芯332设有容纳所述柔性电路板23的让位孔3320，对应的，让位孔3320也设有四个。
所述下夹板31设有通孔310，柔性电路板23的弹力臂233沿振膜21的振动方向的投影至少部分位于所述通孔310内，即下夹板31的通孔310可以增大弹力臂233的振动空间。对应的，所述通孔310也设有四个，所述通孔310与柔性电路板23一一对应。
另外，扬声器100还设有覆盖所述通孔310的连接片40，连接片40与下夹板31的外表面连接。所述连接片40为钢片，可增大磁路系统的强度；在其它实施方式中，连接片也可为聚碳酸酯片，或涤纶树脂片，由此，通孔还可以保证空气泄露，连接片可防止粉尘进入。在其它实施方式中，连接片40也可以为其它材质。
一并参照图4所示，所述下夹板31包括靠近所述振动系统20的内表面311和与所述内表面311相对的外表面312，所述下夹板31设有自所述外表面312向内表面311凹陷的凹槽313，所述通孔310贯穿所述凹槽313，所述连接片40位于所述凹槽313中，由此使得连接片40的设置并未增加扬声器100的整体高度。
在本实施方式中，连接片40设有四个，并且连接片40与所述通孔310一一对应。
实施例二
如图5所示，为本发明的实施例二的扬声器200，实施例二与实施例一的区别特征仅在于：实施例二的扬声器200的连接片40’设有两个，每个所述连接片40’覆盖两个所述通孔310’。
实施例三
如图6所示，为本发明的实施例三的扬声器300，实施例三与实施例一的区别特征仅在于：实施例三的扬声器300的连接片40’’设有一个并呈环状结构，其包括覆盖所述通孔310’’的主体部41’’和连接相邻所述主体部41’’的连接臂42’’。
本发明的扬声器通过在下夹板设置与所述柔性电路板对应的通孔，增大了柔性电路板的振动空间，提高产品的性能。
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、驱动所述振膜振动发声的音圈以及与所述音圈固定连接的柔性电路板，所述柔性电路板包括与所述音圈连接的第一固定部、与所述盆架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，所述磁路系统包括下夹板以及固定于所述下夹板且间隔设置的主磁钢和副磁钢，所述副磁钢环绕所述主磁钢并形成磁间隙，所述音圈置于所述磁间隙中，其特征在于，所述下夹板设有通孔，所述弹力臂沿所述振膜振动方向的投影至少部分位于所述通孔，所述扬声器还设有与所述下夹板的外表面连接并覆盖所述通孔的连接片。
  2. 根据权利要求1所述的扬声器，其特征在于，所述柔性电路板位于所述音圈远离所述振膜一侧，并且所述第一固定部与所述音圈的下表面连接。
  3. 根据权利要求1所述的扬声器，其特征在于，所述下夹板包括靠近所述振动系统的内表面和与所述内表面相对的外表面，所述下夹板设有自所述外表面向内表面凹陷的凹槽，所述通孔贯穿所述凹槽，所述连接片位于所述凹槽中。
  4. 根据权利要求1所述的扬声器，其特征在于，所述连接片为钢片，或聚碳酸酯片，或涤纶树脂片。
  5. 根据权利要求1所述的扬声器，其特征在于，所述音圈为跑道形，所述柔性电路板包括四个，并且分别位于所述音圈的角部，所述通孔也设有四个，并且所述通孔与柔性电路板一一对应。
  6. 根据权利要求5所述的扬声器，其特征在于，所述连接片设有四个，并且所述连接片与所述通孔一一对应。
  7. 根据权利要求5所述的扬声器，其特征在于，所述连接片设有两个，每个所述连接片覆盖两个所述通孔。
  8. 根据权利要求5所述的扬声器，其特征在于，所述连接片设有一个并呈中空环状结构，其包括覆盖所述通孔的主体部和连接相邻所述主体部的连接臂。
  9. 根据权利要求1所述的扬声器，其特征在于，所述磁路系统还包括贴附在所述主磁钢的主极芯和贴附在所述副磁钢的副极芯，所述副极芯设有容纳所述柔性电路板的让位孔。
PCT/CN2022/125113 2022-08-12 2022-10-13 扬声器 Ceased WO2024031827A1 (zh)

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CN118317236A (zh) * 2024-06-07 2024-07-09 瑞声光电科技(常州)有限公司 发声单体

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JP2004222208A (ja) * 2003-01-17 2004-08-05 Shinetsu Fujitsu Kk 振動スピーカ
CN110035362A (zh) * 2018-12-31 2019-07-19 瑞声科技(新加坡)有限公司 扬声器
CN213280079U (zh) * 2020-07-08 2021-05-25 厦门东声电子有限公司 一种抗振扬声器
CN113453128A (zh) * 2021-06-29 2021-09-28 歌尔股份有限公司 振动发声装置
CN216391396U (zh) * 2021-12-03 2022-04-26 瑞声光电科技(常州)有限公司 扬声器

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JP2004222208A (ja) * 2003-01-17 2004-08-05 Shinetsu Fujitsu Kk 振動スピーカ
CN110035362A (zh) * 2018-12-31 2019-07-19 瑞声科技(新加坡)有限公司 扬声器
CN213280079U (zh) * 2020-07-08 2021-05-25 厦门东声电子有限公司 一种抗振扬声器
CN113453128A (zh) * 2021-06-29 2021-09-28 歌尔股份有限公司 振动发声装置
CN216391396U (zh) * 2021-12-03 2022-04-26 瑞声光电科技(常州)有限公司 扬声器

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118317236A (zh) * 2024-06-07 2024-07-09 瑞声光电科技(常州)有限公司 发声单体

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