WO2022006791A1 - 扬声器箱 - Google Patents

扬声器箱 Download PDF

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Publication number
WO2022006791A1
WO2022006791A1 PCT/CN2020/100926 CN2020100926W WO2022006791A1 WO 2022006791 A1 WO2022006791 A1 WO 2022006791A1 CN 2020100926 W CN2020100926 W CN 2020100926W WO 2022006791 A1 WO2022006791 A1 WO 2022006791A1
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WO
WIPO (PCT)
Prior art keywords
spacer
sound
magnetic
cavity
frame
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PCT/CN2020/100926
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English (en)
French (fr)
Inventor
吴军
印兆宇
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
Priority to PCT/CN2020/100926 priority Critical patent/WO2022006791A1/zh
Publication of WO2022006791A1 publication Critical patent/WO2022006791A1/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • 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 sound and electricity, in particular to a speaker box.
  • a speaker box in the prior art includes a casing, a cover combined with the casing, and a sound-generating unit placed in the first cavity; in the related art, after the casing and the cover are assembled to form a cavity, In order to improve performance, a corresponding packaging area is generally designed in the cavity for filling the sound-absorbing material, which cannot efficiently utilize the volume of the accommodation space, and the filling efficiency is low.
  • the purpose of the utility model is to provide a loudspeaker box that can efficiently utilize the volume of the accommodation space and can realize high-efficiency filling of sound-absorbing materials.
  • the speaker box includes a casing with a receiving space, a cover assembled with the casing, and a sound-producing unit accommodated in the receiving space;
  • the sound-producing unit includes a basin frame , a magnetic circuit system with a magnetic yoke and a vibration system with a vibrating film placed in the basin frame;
  • the housing protrudes toward the receiving space to form a spacer with a mounting plane, and the spacer is connected to the housing
  • a first cavity is formed around it, a support step extending from the spacer to the first cavity is arranged in the first cavity, and the sound-emitting unit is placed on the support step;
  • the sound-emitting unit It also includes a flexible circuit board arranged around the basin frame and a ring-shaped ventilating spacer fixed on the side of the flexible circuit board away from the installation plane.
  • the breathable spacer includes a connection with the annular frame a first side end and a second side end opposite to the first side end and fixedly connected with the yoke, and a first side wall connecting the first side end and the second side end and surrounding the magnetic circuit system ;
  • a second cavity is formed between the air-permeable spacer and the yoke, the shell and the cover, and the second cavity is filled with sound-absorbing material.
  • the flexible circuit board further includes an electrical contact terminal connected to the annular frame and disposed in the annular frame, and an electrical connection portion extending from the annular frame away from the magnetic circuit system.
  • the vibration system further includes a voice coil for driving the diaphragm to vibrate, and the electrical contact terminal is electrically connected to the voice coil.
  • the second side end of the air-permeable spacer surrounds the magnetic yoke and is connected to the side of the magnetic yoke away from the basin frame.
  • the breathable spacer is a mesh structure.
  • the breathable spacer is a three-dimensional mesh.
  • the magnetic circuit system further includes a magnetic conductive member, the magnetic conductive member is placed in the pot frame, and a part of the end surface of the magnetic conductive member close to one side of the pot frame and facing the electrical contact terminal is connected to the The end face of the pot frame facing the electrical contact terminal is flush.
  • a sounding front cavity is formed between the diaphragm and the casing, the casing includes a bottom wall parallel to the diaphragm and a side wall extending from the bottom, on the side wall There is a sound outlet that communicates with the sounding pre-cavity.
  • the beneficial effect of the utility model is that: the utility model is provided with a thickened part on the annular frame of the flexible circuit board to be sealed and connected to the installation plane, and a ventilating spacer is provided with the yoke, the shell and the cover to form a second cavity filled with sound absorption
  • a ventilating spacer is provided with the yoke, the shell and the cover to form a second cavity filled with sound absorption
  • FIG. 1 is an exploded view of the structure of a speaker box according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a three-dimensional structure of a speaker box according to an embodiment of the present invention.
  • FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2 .
  • FIG. 4 is a cross-sectional view taken along the direction B-B in FIG. 2 .
  • FIG. 5 is an enlarged view of C in FIG. 4 .
  • the speaker box 100 includes a casing 1 , a cover 2 , and a sounding unit 3 .
  • the housing 1 includes a bottom wall 11 , a side wall 12 , a receiving space 13 , and a spacer 14 .
  • the bottom wall 11 is parallel to the dome 3312, the side wall 12 extends from the bottom, and the side wall 12 is provided with a sound outlet 121 that communicates with the sounding pre-cavity 1313 so that the sounding pre-cavity 1313 communicates with the outside world, as shown in FIG. 4 .
  • the spacer 14 is formed to protrude from the housing 1 toward the receiving space 13 , and the spacer 14 and the housing 1 are surrounded to form a first cavity 131 .
  • the first cavity 131 is also provided with a support step 1311 extending from the spacer 14 to the first cavity.
  • the spacer 14 is provided with a mounting plane 141 , and the mounting plane 141 is sealed with the thickened portion 3411 , and the sounding unit 3 It is placed on the support step 1311 , and the support step 1311 is in contact with the diaphragm 331 of the sound generating unit 3 .
  • the cover 2 and the casing 1 are assembled together to separate the receiving space 13 from the external environment.
  • the sound-generating unit 3 includes a basin frame 31 , a magnetic circuit system 32 , a vibration system 33 , a flexible circuit board 34 and a ventilating spacer 35 , and the sound-generating unit 3 is accommodated in the accommodation space 13 .
  • the magnetic circuit system 32 and the vibration system 33 are placed in the basin frame 31 , and a part of the basin frame 31 and the vibration system 33 are placed in the first cavity 131 .
  • the end surface of the pot frame 31 facing the electrical contact terminals 342 is flush with the end face of the magnetic conductive member 323 close to the pot frame and facing the electrical contact terminals 342 , and the electrical contact of the flexible circuit board 34
  • the terminal 342 is placed on a part of the end surface of the basin frame 31 and the magnetic conductive member 323 facing the side of the flexible circuit board 34 .
  • the magnetic circuit system 32 includes a magnetic yoke 321, a magnetic steel assembly 322, a magnetic conductive member 323 and a pole core 324.
  • the magnetic conductive member 323 is placed in the basin frame 31, and the pole core 324 is placed in the central area of the magnetic conductive member 323.
  • the magnetic steel assembly 322 is placed on the side of the magnetic conductive member 323 and the pole core 324 away from the diaphragm 331 , and the yoke 321 is placed on the side of the magnetic steel assembly 322 away from the magnetic conductive member 323 and is fixedly connected to the magnetic steel assembly 322 .
  • the magnetic steel assembly 322 includes a first magnetic steel 3221 and four second magnetic steels 3222.
  • the first magnetic steel 3221 is located in the central area and is attached to the pole core 324.
  • the second magnetic steel 3222 surrounds the first magnetic steel 3221 and is connected to the first magnetic steel 3221.
  • the steel 3221 is arranged at intervals to form a magnetic gap 3223, and the voice coil 333 is placed in the magnetic gap 3223.
  • the magnetic conductive member 323 is placed in the pot frame 31 , and a part of the end surface of the magnetic conductive member 323 close to the pot frame 31 and facing the electrical contact terminals 342 is flat with the end face of the pot frame 31 facing the electrical contact terminals 342 . together.
  • the vibration system 33 includes a diaphragm 331 , a bracket 332 and a voice coil 333 .
  • the diaphragm 331 abuts against the support step 1311 and forms a sounding front cavity 1313 between the casing 1 .
  • the diaphragm 331 includes a diaphragm body 3311 and a dome 3312 .
  • the side of the bracket 332 close to the yoke 321 is in contact with the voice coil 333
  • the side of the bracket 332 away from the yoke 321 is connected to the diaphragm body 3311
  • the other side of the diaphragm body 3311 and the dome 3312 are away from the bottom wall of the casing 1 .
  • 11 is connected on one side.
  • the voice coil 333 is used to drive the vibrating membrane 331 to vibrate and is placed in the magnetic gap 3223 .
  • the voice coil 333 is provided with pins 3331 that are electrically connected to the electrical contact terminals 342 of
  • the flexible circuit board 34 includes a ring-shaped frame 341 and electrical contact terminals 342 arranged around the basin frame 31 .
  • the ring-shaped frame 341 of the flexible circuit board 34 is a rectangular frame.
  • the contact terminals 342 are connected to the four inner corners of the annular frame 341 and extend into the rectangular frame from the four inner corners.
  • the connection between the annular frame 341 and the mounting plane 141 is provided with a thickened portion 3411, and the thickened portion 3411 is connected to the mounting plane 141.
  • the planes 141 are sealed and connected, and the flexible circuit board 34 further includes an electrical connection portion 3412 extending from the annular frame 341 away from the magnetic circuit system.
  • the electrical connection portion 3412 is used to electrically connect the sounding unit 3 to the outside world.
  • the electrical contact terminals 342 of the flexible circuit board 34 are attached to the basin frame 31 and part of the magnetic conductive member 323 , and the annular frame 341 is far away from the mounting plane 141 .
  • One side is connected to the first side end 352 of the air-permeable spacer 35 , and the electrical contact terminal 342 of the flexible circuit board 34 is electrically connected to the pin 3331 of the voice coil 333 .
  • the air-permeable spacer 35 includes a first side wall 351 , a first side end 352 and a second side end 353 opposite to the first side end 352 . It is annular and fixed on the side of the flexible circuit board 34 away from the mounting plane 141 .
  • the first side end 352 is connected to the side of the annular frame 341 away from the installation plane 141
  • the second side end 353 surrounds the yoke 321 and is fixedly connected to the side of the yoke 321 away from the basin frame 31
  • the first side wall 351 is connected to the first side wall 351.
  • the one side end 352 and the second side end 353 surround the magnetic circuit system 32 .
  • the breathable spacer 35 is a three-dimensional mesh cloth with a mesh structure.
  • a second cavity 132 is formed between the air-permeable spacer 35 , the yoke 321 , the housing 1 , and the cover 2 , as shown in FIGS. 3-4 .
  • the second cavity 132 can be used for filling with sound-absorbing material.
  • the thickened portion 3411 is far away from the mounting plane.
  • One side of 141 is provided with a breathable spacer 35, which is connected to the yoke 321 and surrounds the magnetic circuit system 32.
  • the isolation of the breathable spacer 35 separates the sound-emitting unit 3.
  • the breathable spacer and the thickened part of the flexible circuit board are separated. Set the volume that can efficiently utilize the storage space of the speaker box, and achieve high-efficiency filling of the sound-absorbing material.

Abstract

本实用新型提供了一种扬声器箱，包括具有收容空间的壳体、与壳体组合装配的盖体以及收容于壳体的发声单体；发声单体包括盆架、具有磁轭的磁路系统和具有振膜的振动系统；壳体朝向收容空间凸出形成具有安装平面的间隔件，发声单体还包括环设于盆架的柔性电路板以及呈环状的透气隔离件，柔性电路板包括环状框架以及设置于环状框架与安装平面连接处的加厚部，加厚部与安装平面密封相连；透气隔离件与磁轭、壳体以及盖体之间形成填充吸音材料的第二腔体。本实用新型的扬声器箱可以高效收容空间的体积，并实现对吸音材料的高效率灌装。

Description

扬声器箱 技术领域
本实用新型涉及涉及声电领域，尤其涉及一种扬声器箱。
 背景技术
随着电子信息技术的快速发展，越来越多的电子产品使用扬声器箱作为其发声部件，例如手机，笔记本电脑等。为了适应市场需求，扬声器箱的发展也相应加快。
 技术问题
现有技术的扬声器箱包括壳体、与所述壳体组合的盖体、以及置于所述第一腔体内的发声单体；相关技术中，在壳体与盖体组装形成腔体后，为了提升性能，一般在腔体内设计相应的封装区域用于灌装吸音材料，无法高效利用收容空间的体积，且灌装效率低。
因此，有必要提供一种新的扬声器箱解决上述技术问题。
 技术解决方案
本实用新型的目的在于提供一种高效利用收容空间体积并可实现对吸音材料高效率灌装的扬声器箱。
本实用新型的技术方案如下：该扬声器箱包括包括具有收容空间的壳体、与所述壳体组合装配的盖体以及收容于所述收容空间的发声单体；所述发声单体包括盆架、置于盆架内且具有磁轭的磁路系统和具有振膜的振动系统；所述壳体朝向所述收容空间凸出形成具有安装平面的间隔件，所述间隔件与所述壳体围设形成第一腔体，所述第一腔体内设有自所述间隔件向所述第一腔体延伸的支撑台阶，所述发声单体置于所述支撑台阶；所述发声单体还包括环设于所述盆架的柔性电路板以及固设于所述柔性电路板远离所述安装平面一侧呈环状的透气隔离件，所述柔性电路板包括环设于所述盆架的环状框架以及设置于所述环状框架与所述安装平面连接处的加厚部，所述加厚部与所述安装平面密封相连；所述透气隔离件包括与所述环状框架相连的第一侧端和与所述第一侧端相对并与所述磁轭固定连接的第二侧端以及连接第一侧端和第二侧端并围绕所述磁路系统的第一侧壁；所述透气隔离件与所述磁轭、壳体以及盖体之间形成第二腔体，所述第二腔体内填充吸音材料。
优选地，所述柔性电路板还包括与所述环状框架相连并置于所述环状框架内的电接触端子以及自所述环状框架向远离所述磁路系统延伸的电连接部。
优选地，所述振动系统还包括驱动振膜振动的音圈，所述电接触端子与所述音圈电连接。
优选地，所述透气隔离件的第二侧端环绕所述磁轭并与所述磁轭远离所述盆架一侧相连。
优选地，所述透气隔离件为网状结构。
优选地，所述透气隔离件为立体网布。
优选地，所述磁路系统还包括导磁件，所述导磁件置于所述盆架内，所述导磁件靠近所述盆架一侧且面向所述电接触端子的部分端面与所述盆架面向所述电接触端子的端面平齐。
优选地，所述振膜与所述壳体之间形成的发声前腔，所述壳体包括与所述振膜平行的底壁和自底部延伸而出的侧壁，在所述侧壁上设有与所述发声前腔导通的出声孔。
 有益效果
本实用新型的有益效果在于：本实用新型在柔性电路板的环状框架设置加厚部与安装平面密封相连，并设置透气隔离件与磁轭、壳体、盖体形成第二腔体填充吸音材料，可以高效利用扬声器箱的收容空间的体积，并实现对吸音材料的高效率灌装。
 附图说明
图1为本实用新型实施例扬声器箱的结构分解图。
图2为本实用新型的实施例扬声器箱的立体结构示意图。
图3为图2中A-A方向的剖视图。
图4为图2中B-B方向的剖视图。
图5为图4中C处放大图。
 本发明的最佳实施方式
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。
本实施例提供了一种扬声器箱100。如图1-4所示，扬声器箱100包括壳体1、盖体2、发声单体3。
具体地，如图1-3所示，壳体1包括底壁11、侧壁12、收容空间13、间隔件14。底壁11与球顶3312平行，侧壁12自底部延伸而出且侧壁12上设有与发声前腔1313相导通的出声孔121使发声前腔1313与外界相通，如图4所示。间隔件14自壳体1朝向收容空间13凸出形成，间隔件14与壳体1围设形成第一腔体131。第一腔体131内还设有自所述间隔件14向第一腔体延伸的支撑台阶1311，间隔件14设有安装平面141，安装平面141与加厚部3411密封相连，发声单体3置于支撑台阶1311上，且支撑台阶1311与发声单体3的振膜331抵接。
如图1-3结合图5所示，盖体2与壳体1组合装配在一起将收容空间13与外界环境分隔。
如图1-3所示，发声单体3包括盆架31、磁路系统32、振动系统33、柔性电路板34和透气隔离件35，发声单体3收容于收容空间13内，本实施例中，磁路系统32和振动系统33置于盆架31内，盆架31和振动系统33的一部分置于第一腔体131内。
具体地，如图3所示，盆架31面向电接触端子342的端面与导磁件323靠近所述盆架一侧且面向电接触端子342的端面平齐，且柔性电路板34的电接触端子342置于所述盆架31和导磁件323面向柔性电路板34一侧的部分端面上。
磁路系统32包括磁轭321、磁钢组件322、导磁件323和极芯324，导磁件323置于盆架31内，极芯324置于导磁件323的中心区域，磁钢组件322置于导磁件323和极芯324远离振膜331一侧，磁轭321置于磁钢组件322远离导磁件323一侧且与磁钢组件322固定连接。磁钢组件322包括第一磁钢3221和四个第二磁钢3222，第一磁钢3221位于中心区域与极芯324贴合，第二磁钢3222围绕第一磁钢3221且与第一磁钢3221间隔设置形成磁间隙3223，音圈333置于磁间隙3223内。导磁件323置于所述盆架31内，所述导磁件323靠近所述盆架31一侧且面向电接触端子342的部分端面与所述盆架31面向电接触端子342的端面平齐。
振动系统33包括振膜331、支架332和音圈333。振膜331与支撑台阶1311抵接并与壳体1之间形成的发声前腔1313，振膜331包括振膜本体3311和球顶3312。支架332靠近磁轭321一侧与音圈333相抵接，支架332远离磁轭321一侧与振膜本体3311相连接，振膜本体3311的另一侧与球顶3312远离壳体1的底壁11的一侧相连接。音圈333用于驱动振膜331振动且置于磁间隙3223中,音圈333上设有与柔性电路板34的电接触端子342电连接的引脚3331。
具体地，如图1所示，柔性电路板34包括环设于盆架31的环状框架341和电接触端子342，本实施例中，柔性电路板34的环状框架341为矩形框，电接触端子342和环状框架341的四个内角处相连且自四个内角处向矩形框内延伸，环状框架341与安装平面141的连接处设有加厚部3411，加厚部3411与安装平面141密封相连，柔性电路板34还包括自环状框架341向远离磁路系统延伸的电连接部3412，电连接部3412用于发声单体3与外界电连接。本实施例中，如图1结合图3-4所示，柔性电路板34的电接触端子342贴设于所述盆架31和部分导磁件323上，环状框架341远离安装平面141的一侧与透气隔离件35的第一侧端352相连，且柔性电路板34的电接触端子342与音圈333的引脚3331电连接。
具体地，如图3-5结合图1所示，透气隔离件35包括第一侧壁351、第一侧端352以及与第一侧端352相对的第二侧端353，透气隔离件35呈环状且固设于柔性电路板34远离安装平面141一侧。第一侧端352与环状框架341远离安装平面141的一侧相连，第二侧端353环绕磁轭321并与磁轭321远离盆架31的一侧固定相连，第一侧壁351连接第一侧端352和第二侧端353并围绕磁路系统32。本实施例中，透气隔离件35为网状结构的立体网布。透气隔离件35与磁轭321、壳体1、盖体2之间形成第二腔体132，如图3-4所示。第二腔体132内可用于灌装填充吸音材料。
综上所述，与现有技术相比，本实用新型提供的扬声器箱100在柔性电路板34的环状框架341设置加厚部3411与安装平面141密封后，在加厚部3411远离安装平面141一侧设置透气隔离件35，透气隔离件35与磁轭321相连且围绕磁路系统32，透气隔离件35的隔离将发声单体3隔开，透气隔离件以及柔性电路板加厚部的设置能够高效利用扬声器箱的收容空间的体积，并实现对吸音材料的高效率灌装。
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 (8)

  1. 一种扬声器箱，包括具有收容空间的壳体、与所述壳体组合装配的盖体以及收容于所述收容空间的发声单体；所述发声单体包括盆架、置于盆架内且具有磁轭的磁路系统和具有振膜的振动系统；其特征在于：所述壳体朝向所述收容空间凸出形成具有安装平面的间隔件，所述间隔件与所述壳体围设形成第一腔体，所述第一腔体内设有自所述间隔件向所述第一腔体延伸的支撑台阶，所述发声单体置于所述支撑台阶；所述发声单体还包括环设于所述盆架的柔性电路板以及固设于所述柔性电路板远离所述安装平面一侧呈环状的透气隔离件，所述柔性电路板包括环设于所述盆架的环状框架以及设置于所述环状框架与所述安装平面连接处的加厚部，所述加厚部与所述安装平面密封相连；所述透气隔离件包括与所述环状框架相连的第一侧端和与所述第一侧端相对并与所述磁轭固定连接的第二侧端以及连接第一侧端和第二侧端并围绕所述磁路系统的第一侧壁；所述透气隔离件与所述磁轭、壳体以及盖体之间形成第二腔体，所述第二腔体内填充吸音材料。
  2. 据权利要求1所述的扬声器箱，其特征在于，所述柔性电路板还包括与所述环状框架相连并置于所述环状框架内的电接触端子以及自所述环状框架向远离所述磁路系统延伸的电连接部。
  3. 据权利要求2所述的扬声器箱，其特征在于，所述振动系统还包括驱动振膜振动的音圈，所述电接触端子与所述音圈电连接。
  4. 根据权利要求1所述的扬声器箱，其特征在于，所述透气隔离件的第二侧端环绕所述磁轭并与所述磁轭远离所述盆架一侧相连。
  5. 根据权利要求1所述的扬声器箱，其特征在于，所述透气隔离件为网状结构。
  6. 根据权利要求5所述的扬声器箱，其特征在于，所述透气隔离件为立体网布。
  7. 根据权利要求2所述的扬声器箱，其特征在于，所述磁路系统还包括导磁件，所述导磁件置于所述盆架内，所述导磁件靠近所述盆架一侧且面向所述电接触端子的部分端面与所述盆架面向所述电接触端子的端面平齐。
  8. 根据权利要求1所述的扬声器箱，其特征在于，所述振膜与所述壳体之间形成的发声前腔，所述壳体包括与所述振膜平行的底壁和自底部延伸而出的侧壁，在所述侧壁上设有与所述发声前腔导通的出声孔。
PCT/CN2020/100926 2020-07-08 2020-07-08 扬声器箱 WO2022006791A1 (zh)

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