WO2020258142A1 - 发声装置 - Google Patents

发声装置 Download PDF

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Publication number
WO2020258142A1
WO2020258142A1 PCT/CN2019/093229 CN2019093229W WO2020258142A1 WO 2020258142 A1 WO2020258142 A1 WO 2020258142A1 CN 2019093229 W CN2019093229 W CN 2019093229W WO 2020258142 A1 WO2020258142 A1 WO 2020258142A1
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WO
WIPO (PCT)
Prior art keywords
fpc board
conductive
magnetic bowl
conductive plate
sound
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/CN2019/093229
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English (en)
French (fr)
Inventor
张古清
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
Original Assignee
AAC Acoustic Technologies Shenzhen 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.)
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Publication date
Application filed by AAC Acoustic Technologies Shenzhen Co Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Priority to PCT/CN2019/093229 priority Critical patent/WO2020258142A1/zh
Priority to CN201921002085.1U priority patent/CN210183527U/zh
Publication of WO2020258142A1 publication Critical patent/WO2020258142A1/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 technical field of acoustics, in particular to a sound generating device.
  • the prior art speaker includes a magnetic bowl and an FPC board connected to the magnetic bowl, and the static electricity generated by the speaker is eliminated through the grounding of the FPC board.
  • the FPC board and the magnetic bowl are not well connected, it is easy to cause the speaker to have a ground failure problem. Once the problem of ground failure occurs, the static electricity generated by the speaker cannot be eliminated through the FPC board grounding, causing the static electricity to interfere with the magnetic field conducted by the magnetic bowl, thereby affecting the performance of the speaker.
  • the purpose of the present invention is to provide a sound generating device, which solves the technical problem of poor conduction between the FPC board and the magnetic bowl in the prior art.
  • a sounding device includes a sounding monomer and an FPC board electrically connected to the sounding monomer.
  • the sounding monomer includes a basin frame and a magnetic bowl arranged on the basin frame.
  • the FPC board is connected to the frame through a conductive plate.
  • the magnetic bowl is electrically connected to achieve grounding, and the conductive plate is welded and fixed to the magnetic bowl.
  • the FPC board is fixed to the conductive board through a conductive adhesive layer.
  • the area of the conductive adhesive layer is smaller than the area of the conductive plate.
  • the FPC board completely covers the conductive adhesive layer, and the FPC board and the conductive adhesive layer cover the same area on the conductive plate.
  • the conductive plate and the magnetic bowl are welded to form solder joints, and the solder joints are located on both sides of the FPC board.
  • the number of the solder joints is three, and the three solder joints are arranged at three vertices of a triangle.
  • the conductive plate is a steel plate.
  • the thickness of the conductive plate is 0.08-0.12 mm.
  • the conductive adhesive layer is a conductive pressure-sensitive adhesive.
  • the present invention provides a sound generating device.
  • the FPC board is electrically connected to the magnetic bowl through a conductive plate to achieve grounding, and the conductive board and the magnetic bowl are welded and fixed, so that reliable conduction between the FPC board and the magnetic bowl is realized, so that the sound generating device generates
  • the static electricity can be smoothly eliminated through the FPC board grounding, effectively ensuring the performance of the sound device.
  • Figure 1 is an exploded view of a vocal monomer according to an embodiment of the present invention
  • Figure 2 is a schematic perspective view of a sound generating device according to an embodiment of the present invention.
  • Figure 3 is an exploded view of a sounding device according to an embodiment of the present invention.
  • Fig. 4 is a manufacturing flow chart of the sound generating device according to an embodiment of the present invention.
  • Fig. 1 is an exploded view of a vocal monomer according to an embodiment of the present invention.
  • the sound-emitting unit 1 includes a basin frame 11 with a receiving space 112, a magnetic bowl 12 connected to the bottom of the basin frame 11 and forming a storage space with the basin frame 11, and a magnetic bowl 12 contained in the receiving space 112.
  • the magnetic circuit system 13 includes a first magnet part 131 and a second magnet part 132, the second magnet part 132 is arranged around the first magnet part 131 and forms a magnetic gap with the first magnet part 131;
  • the vibration system 14 includes a diaphragm 141 fixed on the top of the basin frame 11 and a voice coil 142 whose one end is connected to the diaphragm 141 and the other end is inserted into the magnetic gap and drives the diaphragm 141 to vibrate;
  • the vibration system 14 includes a diaphragm 141 fixed on the top of the basin frame 11 The upper diaphragm 141, one end connected to the upper diaphragm 141, the other end is inserted into the magnetic gap and the voice coil 142 driving the upper diaphragm 141 to vibrate, and the lower diaphragm 143 fixed to the frame 11 and opposite to the upper diaphragm 141 at intervals. .
  • Fig. 2 is a schematic perspective view of a sound generating device according to an embodiment of the present invention
  • Fig. 3 is an exploded view of the sound generating device according to an embodiment of the present invention.
  • the sounding device 10 includes a sounding unit 1 and an FPC board 4 electrically connected to the sounding unit 1.
  • the sounding unit 1 includes a basin frame 11 and a magnetic bowl 12 arranged on the basin frame 11.
  • FPC The plate 4 is electrically connected to the magnetic bowl 12 through the conductive plate 2 to achieve grounding, and the conductive plate 2 and the magnetic bowl 12 are welded and fixed.
  • the FPC board 4 is electrically connected to the magnetic bowl 12 through the conductive board 2 to achieve grounding, and the conductive board 2 and the magnetic bowl 12 are welded and fixed, so that reliable conduction between the FPC board 4 and the magnetic bowl 12 is achieved, thereby
  • the static electricity generated by the sound generating device 10 can be smoothly eliminated through the grounding of the FPC board 4, and the performance of the sound generating device 10 is effectively ensured.
  • the FPC board 4 is fixed to the conductive board 2 through the conductive adhesive layer 3.
  • the area of the conductive adhesive layer 3 is smaller than the area of the conductive plate 2, so that the conductive adhesive layer 3 attached to the middle of the conductive plate 2 can expose the upper and lower parts of the conductive plate 2, thereby facilitating laser welding.
  • the FPC board 4 completely covers the conductive adhesive layer 3, and the area covered by the FPC board 4 and the conductive adhesive layer 3 on the conductive plate 2 is equal, so that the FPC board 4 and the conductive adhesive layer 3 can be reliably They are bonded together to ensure reliable conduction between the FPC board 4 and the magnetic bowl 12.
  • the conductive plate 2 and the magnetic bowl 12 are welded to form solder joints 21, the solder joints 21 are located on both sides of the FPC board 4, the number of solder joints 21 is three, and the three solder joints 21 represent three vertices of a triangle. Set up.
  • the triangular welding area formed by the three welding points 21 not only enables the conductive plate 2 to be reliably welded to the magnetic bowl 12, but also saves welding costs. It can be understood that, in an alternative embodiment, the solder joints 21 on both sides of the FPC board 4 are not limited to three, and can be specifically determined according to actual requirements.
  • the conductive plate 2 is a steel plate, which has the advantages of high strength, high temperature resistance, high pressure resistance, corrosion resistance, abrasion resistance, and the like. It can be understood that, in an alternative embodiment, the conductive plate 2 may also be a conductive metal plate or a conductive alloy plate. In this embodiment, the thickness of the steel plate is 0.1 mm. After a large number of experimental tests, a steel plate with a thickness of 0.1 mm can not only meet the strength requirements, but also optimize the conduction efficiency of the sound device 10, and can save material costs. It can be understood that, in an alternative embodiment, the thickness of the conductive plate 2 is not limited to 0.1 mm, and can be selected in the range of 0.08-0.12 mm.
  • the conductive adhesive layer 3 is a conductive pressure-sensitive adhesive, which is also called a thermosetting conductive adhesive. It can be understood that, in an alternative embodiment, the conductive adhesive layer 3 may also be conductive silver glue or other conductive adhesives.
  • the FPC board 4 is provided with a first connecting portion 41 and a second connecting portion 42 extending outward, and the side of the basin frame 11 opposite to the PBC board is provided with a first boss 111 and a second boss 112.
  • the first connecting portion 41 is fixed in the first boss 111 and electrically connected to the voice coil lead;
  • the second connecting portion 42 is fixed in the second boss 112 and electrically connected to the voice coil lead.
  • Fig. 4 is a manufacturing flow chart of a sound emitting device according to an embodiment of the present invention. Including the following steps:

Landscapes

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

Abstract

一种发声装置（10），包括发声单体（1）以及与发声单体（1）电连接的FPC板（4），发声单体（1）包括盆架（11）以及设置在盆架（11）上的磁碗（12），FPC板（4）通过导电板（2）与磁碗（12）电连接实现接地，导电板（2）与磁碗（12）焊接固定。FPC板（4）通过导电板（2）与磁碗（12）电连接实现接地，并且导电板（2）与磁碗（12）焊接固定，使得FPC板（4）和磁碗（12）之间实现可靠的导通，从而使发声装置（10）产生的静电能够顺利通过FPC板（4）接地消除，有效地保证了发声装置（10）的性能。

Description

发声装置 技术领域
本发明涉及声学技术领域，尤其涉及一种发声装置。
 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，手机的功能及其多样，其中之一便是高品质的音乐功能，而手机中的扬声器便是实现这个高品质音乐功能的必备条件之一。
现有技术的扬声器包括磁碗以及与磁碗连接的FPC板，扬声器产生的静电通过FPC板接地消除。但是，当FPC板和磁碗导通不畅时，容易导致扬声器出现接地失效的问题。一旦出现接地失效的问题，则扬声器产生的静电无法通过FPC板接地消除，导致静电干扰磁碗导通的磁场，从而影响扬声器的性能。
因此，有必要提供一种发声装置，使FPC板和磁碗始终保持可靠的导通。
 技术问题
本发明的目的在于提供一种发声装置，其解决了现有技术中FPC板和磁碗导通不畅的技术问题。
 技术解决方案
为了解决上述技术问题，本发明提供的技术方案为：
一种发声装置，包括发声单体以及与所述发声单体电连接的FPC板，所述发声单体包括盆架以及设置在所述盆架上的磁碗，所述FPC板通过导电板与所述磁碗电连接实现接地，所述导电板与所述磁碗焊接固定。
其中，所述FPC板通过导电粘接层与所述导电板固定。
其中，所述导电粘结层的面积小于所述导电板的面积。
其中，所述FPC板完全覆盖所述导电粘结层，并且所述FPC板和所述导电粘结层在所述导电板上覆盖的面积相等。
其中，所述导电板与所述磁碗焊接形成焊点，所述焊点位于所述FPC板的两侧。
其中，所述焊点的数量为三个，三个所述焊点呈三角形的三个顶点设置。
其中，所述导电板为钢板。
其中，所述导电板的厚度为0.08-0.12mm。
其中，所述导电粘结层为导电性压敏粘合剂。
 有益效果
本发明提供了一种发声装置，FPC板通过导电板与磁碗电连接实现接地，并且导电板与磁碗焊接固定，使得FPC板和磁碗之间实现可靠的导通，从而使发声装置产生的静电能够顺利通过FPC板接地消除，有效地保证了发声装置的性能。
 附图说明
参照附图，本发明的公开内容将更加显然。应当了解，这些附图仅仅用于说明的目的，而并非意在对本发明的保护范围构成限制。图中：
图1为本发明的一个实施例的发声单体的爆炸图；
图2为本发明的一个实施例的发声装置的示意性立体图；
图3为本发明的一个实施例的发声装置的爆炸图；
图4为本发明的一个实施例的发声装置的制造流程图。
 本发明的实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
图1为本发明的一个实施例的发声单体的爆炸图。
从图中可以看出，该发声单体1包括具有收容空间112的盆架11、连接于盆架11的底部并与盆架11形成收纳空间的磁碗12、收容于收容空间112内的磁路系统13和振动系统14；磁路系统13包括第一磁体部131和第二磁体部132，第二磁体部132围绕第一磁体部131设置并与第一磁体部131形成磁间隙；振动系统14包括固设于盆架11的顶部的振膜141和一端连接于振膜141另一端插入磁间隙并驱动振膜141振动的音圈142；振动系统14包括固设于盆架11的顶部的上振膜141、一端连接于上振膜141另一端插入磁间隙并驱动上振膜141振动的音圈142，以及固定于盆架11并与上振膜141相对且间隔设置的下振膜143。
图2为本发明的一个实施例的发声装置的示意性立体图；图3为本发明的一个实施例的发声装置的爆炸图。
从图中可以看出，该发声装置10包括发声单体1以及与发声单体1电连接的FPC板4，发声单体1包括盆架11以及设置在盆架11上的磁碗12， FPC板4通过导电板2与磁碗12电连接实现接地，导电板2与磁碗12焊接固定。
在本实施例中，FPC板4通过导电板2与磁碗12电连接实现接地，并且导电板2与磁碗12焊接固定，使得FPC板4和磁碗12之间实现可靠的导通，从而使发声装置10产生的静电能够顺利通过FPC板4接地消除，有效地保证了发声装置10的性能。
在本实施例中，FPC板4通过导电粘接层3与导电板2固定。
在本实施例中，导电粘结层3的面积小于导电板2的面积，使得贴合在导电板2中部的导电粘结层3能够露出导电板2的上下部分，从而方便激光焊接。
在本实施例中，FPC板4完全覆盖导电粘结层3，并且FPC板4和导电粘结层3在导电板2上覆盖的面积相等，使得FPC板4和导电粘结层3能够可靠的贴合在一起，从而保证FPC板4和磁碗12之间实现可靠的导通。
在本实施例中，导电板2与磁碗12焊接形成焊点21，焊点21位于FPC板4的两侧，焊点21的数量为三个，三个焊点21呈三角形的三个顶点设置。由三个焊点21形成的三角形焊区，不仅能够使导电板2可靠的焊接在磁碗12上，而且能够节省焊接成本。可以了解，在可选的实施例中，FPC板4两侧的焊点21并不局限于三个，具体可以根据实际的需求而定。
在本实施例中，导电板2为钢板，钢板具有强度高，抗高温、高压，耐腐蚀、磨损等优点。可以了解，在可选的实施例中，导电板2也可以为导电的金属板或者导电的合金板等。在本实施例中，钢板的厚度为0.1mm，经过大量的试验测试，0.1mm厚度的钢板不仅可以在满足强度要求的同时，使得发声装置10的导通效率最佳，而且可以节省材料成本。可以了解，在可选的实施例中，导电板2的厚度并不局限于0.1mm，可以在0.08-0.12mm的范围内进行选择。
在本实施例中，导电粘结层3为导电性压敏粘合剂，导电性压敏粘合剂又称为热固导电胶。可以了解，在可选的实施例中，导电粘结层3也可以为导电银胶或者其他的导电粘合剂。
在本实施例中，FPC板4上设有向外延伸的第一连接部41和第二连接部42，盆架11相对PBC板的侧面设有第一凸台111和第二凸台112。第一连接部41固定在第一凸台111内，并且和音圈引线电连接；第二连接部42固定在第二凸台112内，并且和音圈引线电连接。
图4是根据本发明的一个实施例的发声装置的制造流程图。包括如下步骤：
S102，将FPC板和导电粘合层的第一端面贴合；
S104，将导电粘合层的第二端面和导电板的第一端面贴合；
S106，通过激光点焊将导电板的第二端面固定到磁碗上。
以上所述的仅是本发明的实施方式，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. 一种发声装置，其特征在于，包括发声单体以及与所述发声单体电连接的FPC板，所述发声单体包括盆架以及设置在所述盆架上的磁碗，所述FPC板通过导电板与所述磁碗电连接实现接地，所述导电板与所述磁碗焊接固定。
  2. 根据权利要求1所述的发声装置，所述FPC板通过导电粘接层与所述导电板固定。
  3. 根据权利要求2所述的发声装置，其特征在于：所述导电粘结层的面积小于所述导电板的面积。
  4. 根据权利要求3所述的发声装置，其特征在于：所述FPC板完全覆盖所述导电粘结层，并且所述FPC板和所述导电粘结层在所述导电板上覆盖的面积相等。
  5. 根据权利要求1所述的发声装置，其特征在于：所述导电板与所述磁碗焊接形成焊点，所述焊点位于所述FPC板的两侧。
  6. 根据权利要求5所述的发声装置，其特征在于：所述焊点的数量为三个，三个所述焊点呈三角形的三个顶点设置。
  7. 根据权利要求1所述的发声装置，其特征在于：所述导电板为钢板。
  8. 根据权利要求1所述的发声装置，其特征在于：所述导电板的厚度为0.08-0.12mm。
  9. 根据权利要求1所述的发声装置，其特征在于：所述导电粘结层为导电性压敏粘合剂。
PCT/CN2019/093229 2019-06-27 2019-06-27 发声装置 Ceased WO2020258142A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN213126464U (zh) * 2020-09-25 2021-05-04 瑞声科技(新加坡)有限公司 一种发声单体和扬声器箱
CN112468908B (zh) * 2020-12-18 2022-03-01 瑞声新能源发展(常州)有限公司科教城分公司 扬声器箱及其装配方法

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CN103517189A (zh) * 2012-06-29 2014-01-15 华为终端有限公司 一种扬声器及终端
CN107852550A (zh) * 2015-05-08 2018-03-27 奥音科技（北京）有限公司 电容振膜定位跟踪
CN206524961U (zh) * 2017-01-20 2017-09-26 瑞声科技(新加坡)有限公司 扬声器
CN206524946U (zh) * 2017-01-20 2017-09-26 瑞声科技(新加坡)有限公司 扬声器
CN206524965U (zh) * 2017-01-22 2017-09-26 瑞声科技(新加坡)有限公司 发声器件
CN208908489U (zh) * 2018-08-01 2019-05-28 瑞声科技(新加坡)有限公司 扬声器

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