WO2021134363A1 - 发声器 - Google Patents

发声器 Download PDF

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Publication number
WO2021134363A1
WO2021134363A1 PCT/CN2019/130201 CN2019130201W WO2021134363A1 WO 2021134363 A1 WO2021134363 A1 WO 2021134363A1 CN 2019130201 W CN2019130201 W CN 2019130201W WO 2021134363 A1 WO2021134363 A1 WO 2021134363A1
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WO
WIPO (PCT)
Prior art keywords
voice coil
frame
diaphragm
leg
sound generator
Prior art date
Application number
PCT/CN2019/130201
Other languages
English (en)
French (fr)
Inventor
胡洪建
李帅
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
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.)
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Publication date
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/CN2019/130201 priority Critical patent/WO2021134363A1/zh
Publication of WO2021134363A1 publication Critical patent/WO2021134363A1/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the utility model relates to the technical field of sound equipment components, in particular to a miniature sound generator.
  • the vibration system and the voice coil in the vibration system are indispensable structures, and in order to ensure the quality of the voice coil vibration, the support structure of the voice coil is provided with a support structure to reduce the vibration of the voice coil during vibration. Ensure the sound effect.
  • the voice coil lead is also indispensable because it is used to connect the voice coil to the electrical signal.
  • the voice coil lead is arranged between the frame and the voice coil, causing the voice coil lead to interfere with the frame structure. The coil will transmit pressure to the frame through the voice coil lead, which will affect the fixing of the frame and cause the fixed connection to fall off, especially when the frame structure needs to be glued to the FPC.
  • the purpose of the utility model is to provide a sound generator which can give way to the voice coil lead by providing a way out notch on the frame.
  • a sound generator which includes a basin frame, a magnetic circuit system and a vibration system housed in the basin frame, the vibration system including a diaphragm fixed above the basin frame, a housing A voice coil in the frame and driving the diaphragm to produce sound and a skeleton supporting the voice coil;
  • the voice coil includes a voice coil body and a voice coil lead connected to the voice coil body;
  • the skeleton includes A body portion, a leg portion, and a connecting portion connecting the body portion and the leg portion, the body portion includes a first end portion fixedly connected to the diaphragm and a direction away from the diaphragm from the first end portion A second end portion that extends and is fixedly connected to the voice coil body;
  • the connection portion is bent and extends from the second end portion in a direction away from the second end portion, and the leg portion extends from the connection portion toward Extending in a direction away from the diaphragm, the leg portion includes a relief gap provided through the leg
  • the body part has a rectangular structure with rounded corners, and the connecting part is located at the rounded corners of the body part.
  • the frame further includes a fixing portion extending from the leg portion in a direction away from the voice coil body;
  • the vibration system further includes a flexible circuit board and an auxiliary sound film driven to vibrate by the flexible circuit board.
  • the circuit board includes a first frame part fixed to the basin frame, a first connecting part connected with the fixing part, and an elastic arm connecting the first frame part and the first connecting part.
  • the voice coil lead at the clearance gap is electrically connected to the flexible circuit board.
  • the auxiliary sound film further includes a second frame portion connected to an end of the first frame portion away from the basin frame, a second connection portion connected to the first connection portion, and a second frame portion connected to the first frame portion And the vibration part of the second connection part.
  • the number of the leg portions is four, which are respectively located at the four rounded corner positions of the voice coil body.
  • the beneficial effect of the present invention is that by providing a gap on the skeleton corresponding to the position of the voice coil lead, the structure can realize the yield of the voice coil lead and avoid the voice coil from passing through in principle.
  • the voice coil lead exerts pressure on the frame, which does not affect the fixed setting of the frame, and ensures the stability of the frame to ensure the use effect.
  • Figure 1 is a three-dimensional schematic diagram of a sound generator according to an embodiment of the utility model
  • Figure 2 is an exploded view of the sound generator shown in Figure 1;
  • Figure 3 is a schematic diagram of the structure of the voice coil in an embodiment of the utility model
  • Figure 4 is a schematic diagram of the structure of the skeleton in an embodiment of the utility model
  • Figure 5 is a schematic diagram of the assembly structure of the frame and voice coil in an embodiment of the utility model
  • Figure 6 is an enlarged view of A in Figure 5;
  • Fig. 7 is a schematic cross-sectional view in the direction of V-V in Fig. 1;
  • Fig. 8 is an enlarged view of B in Fig. 7.
  • a sound generator includes a basin frame 1, a magnetic circuit system 3 and a vibration system 2 housed in the basin frame 1.
  • the vibration system 2 includes a diaphragm 23 fixed above the basin frame 1, a voice coil 21 driving the diaphragm 23 to emit sound, and a skeleton 22 supporting the voice coil.
  • the voice coil 21 includes a voice coil body 210 and a voice coil lead 211 for connecting electrical signals.
  • the frame 22 includes a body portion 221, a leg portion 223, and a connecting portion 222 connecting the body portion 221 and the leg portion 223.
  • the body portion 221 includes a first end portion 2211 fixedly connected to the diaphragm 23 and a second end portion extending from the first end portion in a direction away from the diaphragm and fixedly connected to the voice coil body 210 Part 2212; the body part 221 is fixedly connected to the diaphragm 23 and the voice coil body 210 for transmitting the vibration energy of the voice coil body 210 to the diaphragm 23; the connecting portion 222 is connected to the voice coil body 210 It is used to support the voice coil body 210, and further, the voice coil body 210 is suspended in the magnetic gap 36 formed by the magnetic circuit system in the basin frame 1.
  • the connecting portion 222 bends and extends from the second end portion 2212 in a direction away from the second end portion, thereby forming the connecting portion 222 resembling a platform shape.
  • the leg portion 223 is connected to the connecting portion 222 and extends from the connecting portion 222 in a direction away from the diaphragm 23.
  • the body portion 221 has a rectangular structure with rounded corners, and the connecting portion 222 is located at the rounded corners of the body portion; in this embodiment, the number of the leg portions 223 is four, which are respectively located at The four rounded corners of the voice coil body 210 are located.
  • the leg portion 223 is provided with a relief notch 224 penetrating the leg portion, and the voice coil lead 211 is located at the relief notch 224, and passes through the relief notch 224, and the voice coil lead 211 does not produce an extruded skeleton 22 questions.
  • the vibration system 2 is used as the basic part of the sound generator, and generates sound by vibrating by itself.
  • the voice coil 21 is energized and vibrated in a magnetic field to generate sound.
  • the voice coil 21 is connected to the circuit through the voice coil lead 211 to connect to the electrical signal.
  • the voice coil lead 211 needs to be led out from the voice coil 21.
  • the arrangement of the notch 224 along the voice coil lead 211 avoids the squeezing force of the voice coil 21 from passing through the voice coil lead 211 to the frame 22, thereby better ensuring the stability of the frame 22, thereby ensuring the sound generator The effect of use.
  • the frame 22 further includes a fixing portion 225 extending from the leg portion 223 in a direction away from the voice coil body 210;
  • the vibration system 2 further includes a flexible circuit board 25 and an auxiliary device for vibration driven by the flexible circuit board.
  • the flexible circuit board 25 is provided with a first frame portion 251 embedded in the basin frame 1 and fixedly connected to the basin frame 1, a first connecting portion 252 connected to the fixing portion 225, and a first connecting portion 252 connected to the fixing portion 225 and connecting the The first frame portion 251 and the elastic arm 253 of the first connecting portion 252.
  • the voice coil lead 211 located at the relief gap passes through the relief gap 224 and is electrically connected to the flexible circuit board 25.
  • the auxiliary sound film 24 further includes a second frame portion 240 connected to the end of the first frame portion 251 away from the basin frame, a second connection portion 241 connected to the first connection portion 252, and a second connection portion 241 connected to the first connection portion 252.
  • the fixing portion 225 is connected to the flexible circuit board, so as to transmit the vibration energy of the voice coil 21 to the flexible circuit board 25, and the flexible circuit board 25 drives the auxiliary sound membrane 24 to work.
  • specific structural forms such as the flexible circuit board 25 and the auxiliary sound membrane 24 are given.
  • the magnetic circuit system further includes a magnetic yoke 30, a main magnetic steel 32 and a secondary magnetic steel fixed on the magnetic yoke, and a magnetic conductive plate 35 fixed on the main magnetic steel 30.
  • the auxiliary magnet 33 surrounds the main magnet 32 and forms a magnetic gap 36 with the main magnet 32; the main magnet and the basin frame are both rectangular, and the auxiliary magnet includes the length of the main magnet 32.
  • the first magnets 33 on both sides of the axis direction and the second magnets 34 located on both sides of the short axis direction of the main magnet 32, and the side walls 11 in the long axis direction of the basin frame 1 are connected to the first magnet 33;
  • the side wall 12 in the short axis direction of the basin frame 1 is provided with an upper splint 31 extending inwardly and connected to the second magnetic steel 34.
  • the voice coil 21 is located in the magnetic gap and is connected to the upper splint 31.
  • the phases are separated by a certain distance. In this preferred embodiment, the layout of the magnetic steel is given.
  • the side wall 11 in the longitudinal direction of the basin frame 1 is provided with a widened portion 110 connected to the first magnetic steel 33, and both the widened portion 110 and the upper clamping plate 21 are made of magnetically conductive materials. Formed, used for magnetic conductivity.

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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

本实用新型提供了一种发声器，其包括盆架、收容于所述盆架内的磁路系统和振动系统，所述振动系统包括骨架；所述音圈包括音圈引线；所述骨架包括本体部、支脚部以及连接部，所述本体部包括与所述振膜固定连接的第一端部和自所述第一端部朝远离所述振膜方向延伸并与所述音圈本体固定连接的第二端部；所述连接部自所述第二端部朝远离所述第二端部方向弯折延伸，所述支脚部自所述连接部朝远离所述振膜方向延伸，所述支脚部包括贯穿所述支脚部设置的让位缺口。本实用新型设置让位缺口对应到音圈引线位置，可避免音圈引线对骨架产生压力，进而不影响骨架的固定设置，保证骨架的稳定性，以保证使用效果。

Description

发声器 技术领域
本实用新型涉及发声器材部件技术领域，尤其涉及一种微型发声器。
 背景技术
随着科技的快速发展，音频设备也不断快速发展，人们对音频设备的功能性要求越来越高，对于发声器，越来越多人对其结构的牢固性能提出了较高的要求，以避免损伤而保证更好的使用效果。相关技术中，振动系统及振动系统中的音圈是必不可少的结构，且为了保证音圈振动发声的质量，通过针对音圈设置骨架这一支撑结构来减弱振动时音圈的摇摆，进而保证声音的效果。同时，音圈引线由于用于音圈接入电信号而同样必不可少，在现有的结构中会造成音圈引线设置于骨架和音圈之间而造成音圈引线对骨架结构的干涉，音圈会通过音圈引线传递压力到骨架，影响到骨架的固定，造成固定连接的脱落，尤其骨架结构需要胶合到FPC上时。
因此，有必要提供一种发声器，来解决上述音圈引线干涉骨架固定的问题。
 技术问题
本实用新型的目的在于提供一种通过在骨架上设置让位缺口以对音圈引线实现让位的发声器。
 技术解决方案
本实用新型的技术方案如下：一种发声器，其包括盆架、收容于所述盆架内的磁路系统和振动系统，所述振动系统包括固定于所述盆架上方的振膜、收容于所述盆架内并驱动所述振膜发声的音圈和支撑所述音圈的骨架；所述音圈包括音圈本体和与所述音圈本体相连的音圈引线；所述骨架包括本体部、支脚部以及连接所述本体部和支脚部的连接部，所述本体部包括与所述振膜固定连接的第一端部和自所述第一端部朝远离所述振膜方向延伸并与所述音圈本体固定连接的第二端部；所述连接部自所述第二端部朝远离所述第二端部方向弯折延伸，所述支脚部自所述连接部朝远离所述振膜方向延伸，所述支脚部包括贯穿所述支脚部设置的让位缺口，所述音圈引线位于所述让位缺口处以使所述音圈引线与所述骨架不产生挤压。
优选的，所述本体部为具有圆角的矩形结构，所述连接部位于所述本体部的圆角位置处。
优选的，所述骨架还包括自所述支脚部朝远离所述音圈本体方向延伸的固定部；所述振动系统还包括柔性电路板和由柔性电路板驱动振动的辅助音膜，所述柔性电路板包括固定于所述盆架的第一边框部、与所述固定部连接的第一连接部以及连接所述第一边框部和第一连接部的弹性臂。
优选的，位于所述让位缺口处的所述音圈引线与所述柔性线路板电连接。
优选的，所述辅助音膜还包括与所述第一边框部远离所述盆架的一端相连的第二边框部、与所述第一连接部相连的第二连接部以及连接第二边框部和第二连接部的振动部。
优选的，所述支脚部的数量为四个，分别位于所述音圈本体的四个圆角位置处。
 有益效果
与现有技术相比，本实用新型的有益效果在于：通过在骨架上设置让位缺口对应到音圈引线位置，以在结构上实现对音圈引线的让位，在原理上避免音圈通过音圈引线对骨架产生压力，进而不影响骨架的固定设置，保证骨架的稳定性，以保证使用效果。
 附图说明
图1为本实用新型一实施例发声器的立体示意图；
图2为图1所示发声器的分解图；
图3为本实用新型一实施例中音圈的结构示意图；
图4为本实用新型一实施例中骨架的结构示意图；
图5为本实用新型一实施例中骨架和音圈装配结构示意图；
图6为图5中A处的放大图；
图7为图1中V-V方向的剖视示意图；
图8为图7中B处的放大图。
 本发明的最佳实施方式
下面结合附图和实施方式对本实用新型作进一步说明。
请参考图1到图2所示，一种发声器，包括盆架1、收容于盆架1内的磁路系统3和振动系统2。
所述振动系统2包括固定于所述盆架1上方的振膜23、驱动振膜23发声的音圈21、支撑所述音圈的骨架22。如图3所示，所述音圈21包括音圈本体210和用于接入电信号的音圈引线211。
如图4-图8所示，在本实施例中，所述骨架22包括本体部221、支脚部223、和连接所述本体部221和支脚部223的连接部222。所述本体部221包括与所述振膜23固定连接的第一端部2211和自所述第一端部朝远离所述振膜方向延伸并与所述音圈本体210固定连接的第二端部2212；所述本体部221与所述振膜23和音圈本体210固定相连以用于将音圈本体210的振能传递给振膜23；所述连接部222与所述音圈本体210相连以用于支撑所述音圈本体210，进而，将音圈本体210悬置于所述盆架1内中由磁路系统形成的磁间隙36中。所述连接部222自所述第二端部2212朝远离所述第二端部方向弯折延伸，从而形成连接部222类似于平台状。所述支脚部223与连接部222相连，并自所述连接部222朝远离所述振膜23方向延伸。
优选的是，所述本体部221为具有圆角的矩形结构，所述连接部222位于所述本体部的圆角位置处；在本实施例中，支脚部223的数量为四个，分别位于所述音圈本体210的四个圆角位置处。
所述支脚部223设有贯穿所述支脚部的让位缺口224，所述音圈引线211位于所述让位缺口224处，从让位缺口224穿出，音圈引线211不产生挤压骨架22的问题。
本实用新型实施例中，振动系统2作为发声器的基本部分，通过自身振动以发声，其中具体是通过音圈21通电后在磁场中振动以发声。音圈21接入电信号通电是通过音圈引线211连接到电路实现的。基于结构上设置的必要，音圈引线211需要从音圈21上向外引出。让位缺口224沿着音圈引线211的设置，避免了音圈21的挤压作用力通过音圈引线211到骨架22上，进而更好地保证了骨架22的设置稳定性，进而保证发声器的使用效果。
优选的，所述骨架22还包括自所述支脚部223朝远离所述音圈本体210方向延伸的固定部225；所述振动系统2还包括柔性电路板25和由柔性电路板驱动振动的辅助音膜24；所述柔性电路板25设有嵌入所述盆架1内并与盆架1固定相连的第一边框部251，与所述固定部225连接的第一连接部252以及连接所述第一边框部251和第一连接部252的弹性臂253。位于所述让位缺口处的音圈引线211自所述让位缺口224穿出与柔性电路板25电连接。所述辅助音膜24还包括与所述第一边框部251远离所述盆架的一端相连的第二边框部240、与所述第一连接部252相连的第二连接部241以及连接第二边框部240和第二连接部241的振动部242。所述固定部225与所述柔性电路板相连，从而将音圈21的振能传递给柔性电路板25，柔性电路板25再带动辅助音膜24的工作。本优选的实施方案中，给出了柔性电路板25和辅助音膜24等的具体结构形式。
优选的，所述磁路系统还包括磁轭30、固定在所述磁轭之上的主磁钢32和副磁钢、以及固定在所述主磁钢30上的导磁板35。副磁钢33环绕所述主磁钢32并与所述主磁钢32之间形成磁间隙36；所述主磁钢和盆架均为矩形，所述副磁钢包括位于主磁钢32长轴方向两侧的第一磁钢33和位于主磁钢32短轴方向两侧的第二磁钢34，所述盆架1长轴方向的侧壁11与所述第一磁钢33相连；所述盆架1短轴方向的侧壁12设有向内延伸并与所述第二磁钢34相连的上夹板31，所述音圈21位于所述磁间隙内且与所述上夹板31相间隔一定距离。本优选的实施方案中，给出了磁钢的布置形式。
优选的，所述盆架1长轴方向的侧壁11设有与所述第一磁钢33相连的加宽部110，所述加宽部110和所述上夹板21均采用导磁材料制成，用于导磁。
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 (6)

  1. 一种发声器，其包括盆架、收容于所述盆架内的磁路系统和振动系统，所述振动系统包括固定于所述盆架上方的振膜、收容于所述盆架内并驱动所述振膜发声的音圈和支撑所述音圈的骨架；所述音圈包括音圈本体和与所述音圈本体相连的音圈引线；其特征在于，所述骨架包括本体部、支脚部以及连接所述本体部和支脚部的连接部，所述本体部包括与所述振膜固定连接的第一端部和自所述第一端部朝远离所述振膜方向延伸并与所述音圈本体固定连接的第二端部；所述连接部自所述第二端部朝远离所述第二端部方向弯折延伸，所述支脚部自所述连接部朝远离所述振膜方向延伸，所述支脚部包括贯穿所述支脚部设置的让位缺口，所述音圈引线位于所述让位缺口处以使所述音圈引线与所述骨架不产生挤压。
  2. 根据权利要求1所述的发声器，其特征在于：所述本体部为具有圆角的矩形结构，所述连接部位于所述本体部的圆角位置处。
  3. 根据权利要求1所述的发声器，其特征在于：所述骨架还包括自所述支脚部朝远离所述音圈本体方向延伸的固定部；所述振动系统还包括柔性电路板和由柔性电路板驱动振动的辅助音膜，所述柔性电路板包括固定于所述盆架的第一边框部、与所述固定部连接的第一连接部以及连接所述第一边框部和第一连接部的弹性臂。
  4. 根据权利要求3所述的发声器，其特征在于：位于所述让位缺口处的所述音圈引线与所述柔性线路板电连接。
  5. 根据权利要求3所述的发声器，其特征在于：所述辅助音膜还包括与所述第一边框部远离所述盆架的一端相连的第二边框部、与所述第一连接部相连的第二连接部以及连接第二边框部和第二连接部的振动部。
  6. 根据权利要求1所述的发声器，其特征在于：所述支脚部的数量为四个，分别位于所述音圈本体的四个圆角位置处。
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