WO2020103757A1 - 发声模块及电子设备 - Google Patents

发声模块及电子设备

Info

Publication number
WO2020103757A1
WO2020103757A1 PCT/CN2019/118416 CN2019118416W WO2020103757A1 WO 2020103757 A1 WO2020103757 A1 WO 2020103757A1 CN 2019118416 W CN2019118416 W CN 2019118416W WO 2020103757 A1 WO2020103757 A1 WO 2020103757A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
diaphragm
moving iron
iron unit
guide tube
Prior art date
Application number
PCT/CN2019/118416
Other languages
English (en)
French (fr)
Inventor
刘文展
孙亚轩
赵永吉
赵波
周美华
Original Assignee
比亚迪股份有限公司
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.)
Filing date
Publication date
Application filed by 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Publication of WO2020103757A1 publication Critical patent/WO2020103757A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the present disclosure relates to a sound emitting module and an electronic device having the sound emitting module.
  • the earpiece is an important part of the electronic device that converts the electrical signal into mechanical energy and generates sound through vibration.
  • the patent document with the announcement number CN206559644U discloses a piezoelectric ceramic sound-generating module and an electronic device.
  • the technical scheme of this patent is to bond the piezoelectric ceramic sound-generating element and the vibrating element to form a piezoelectric ceramic sound-generating module and fix it to the housing frame.
  • the working mode is that the working vibration of the piezoelectric ceramic sounding element drives the vibrating element to vibrate and make sound.
  • the above scheme mainly has the following defects: 1.
  • the piezoelectric ceramic sound-generating element is directly bonded to the vibrating element, occupying a large amount of the effective vibration area of the vibrating element and affecting the sound quality; 2.
  • the vibrating element adopts a thick plate special-shaped structure with a vibration amplitude It is small and is not suitable for small sound-emitting appliances such as mobile phone handsets and headphones, which cannot produce good sounds. 3.
  • There is no sound cavity design which affects the concentrated sound of the sound, feedback, and affects the sound quality.
  • the present disclosure provides a sound generation module with better sound generation effect.
  • the present disclosure provides a sound generating module, including a diaphragm, a moving iron unit, a sound guide tube, and a headphone socket, the moving iron unit is connected to one side of the diaphragm, and the headphone socket is provided with A sound guide tube connection hole, one end of the sound guide tube is connected to the sound output hole of the moving iron unit, and the other end is connected to the sound guide tube connection hole of the earphone socket.
  • the diaphragm is made of a composite material.
  • the moving iron unit is pasted on the diaphragm.
  • the front side of the moving iron unit is pasted on the diaphragm.
  • the moving iron unit is pasted at the center of the diaphragm.
  • the sound output hole of the moving iron unit is disposed toward the direction of the earphone socket.
  • the length of the diaphragm is 15-20 mm, the width is 5-10 mm, and the thickness is 0.3-0.8 mm.
  • the moving iron unit has a length of 7-10 mm, a width of 3-5 mm, and a thickness of 1-3 mm.
  • the length of the sound guide tube is 20-30 mm, the inner diameter is 1-2 mm, and the outer diameter is 2-3 mm.
  • Another object of the present disclosure is to provide an electronic device with a better sounding effect.
  • the present disclosure provides an electronic device, including: a device body, a casing of the device body is provided with a diaphragm hole and a headphone jack; and a sound generation module as described above, the diaphragm of the sound generation module Set at the diaphragm hole, the moving iron unit, sound guide tube and earphone socket of the sound generating module are all located in the housing, and the earphone socket is provided at a position corresponding to the earphone jack.
  • the sound guide tube connection hole is provided on a side of the headphone socket facing away from the headphone jack.
  • a partition is formed inside the housing, the partition and the housing are integrally formed, the partition, a part of the housing, and the diaphragm together form an acoustic cavity, so
  • the moving iron unit is located in the sound cavity, the headphone socket is located outside the sound cavity, the sound guide tube passes through the partition to connect the moving iron unit and the headphone socket, and the signal of the electronic device A wire passes through the partition to connect with the moving iron unit.
  • the housing includes a bottom plate and a frame formed around the bottom plate, and the diaphragm hole and the headphone jack are disposed on the frame.
  • a high-frequency sound effect is emitted through the diaphragm, and a low-frequency sound effect is emitted through the sound guide tube and the headphone socket to supplement the low frequency portion, so that the sound quality is more uniform and complete.
  • FIG. 1 is a schematic diagram of the electronic device of the present disclosure
  • FIG. 2 is a schematic diagram of the assembly of the sound emitting module of the present disclosure and an electronic device housing;
  • FIG. 3 is a schematic diagram of the sounding module of the present disclosure
  • FIG. 5 is a cross-sectional view of an embodiment of a moving iron unit in the sound-emitting module of the present disclosure
  • the present disclosure provides a sound emitting module and an electronic device having the sound emitting module.
  • the electronic device 100 includes a device body and a sounding module 20.
  • the casing 10 of the device body is provided with a diaphragm hole 121 and a headphone jack 122.
  • the sound generating module 20 includes a diaphragm 23, a moving iron unit 22, a sound guide tube 24, and a headphone jack 25.
  • the diaphragm 23 is disposed at the diaphragm hole 121, the center of the diaphragm 23 may be aligned with the center of the diaphragm hole 121, and the edge of the diaphragm 23 may be connected to the housing 10.
  • the moving iron unit 22, the sound guide tube 24 and the headphone socket 25 are all located in the housing 10.
  • the signal line 21 of the electronic device is connected to the moving iron unit 22.
  • the moving iron unit 22 is provided inside the diaphragm 23 and connected to the diaphragm 23.
  • the earphone socket 25 is provided at a position corresponding to the earphone jack 122 and connected to the housing 10.
  • the earphone socket 25 is provided with a sound guide tube connection hole 251.
  • One end of the sound guide tube 24 is connected to the sound outlet 220 of the moving iron unit 22, and the other end is connected to the sound guide tube connection hole 251 of the earphone socket 25.
  • the headphone jack 25 may be a 3.5 headphone jack or a 4.5 headphone jack known to those skilled in the art.
  • the moving iron unit 22 is a near-closed electromagnetic vibration device, which will vibrate with the input electrical signal, and the vibration state will also change as the electrical signal changes. Since the moving iron unit 22 is disposed on the diaphragm 23, when the moving iron unit 22 vibrates, the diaphragm 23 is pushed to vibrate and emit sound. At the same time, the moving iron unit 22 is also a sound-generating device in addition to a vibration device. Sound is emitted from the sound outlet 220 of the moving iron unit 22 and is transmitted to the cavity of the headphone jack 25 through the sound guide tube 24 and from the cavity of the headphone jack 25 The sound is transmitted through the headphone jack 122, so that the headphone jack 122 also serves as a sound hole for the earpiece.
  • the vibration unit adopted in the present disclosure is the moving iron unit 22,
  • the iron unit 22 can not only vibrate, but can also independently produce its own sound.
  • the sound of the moving iron unit 22 is transmitted through the sound guide tube 24 to enhance the bass effect, just filling the gap of the bass part of the diaphragm 23, such a composite design can meet the electronic
  • the acoustic requirements of the device handset improve the sound quality.
  • the moving iron unit is an acoustic device well known to those skilled in the art, and its structure and working principle are only briefly described here.
  • the moving iron unit 22 includes a shield case 221, a magnet 222, a yoke 223, an electromagnetic coil 224, an armature 225, an interlocking member 226, and a vibrating piece 227.
  • One end of the shielding shell 221 is provided with a sound output hole 220.
  • the magnet 222 is two permanent magnets with different magnetic poles. The two magnets 222 are fixed on the upper and lower sides of the hollow yoke 223, leaving a gap between the two magnets 222
  • the hollow yoke 223 serves as a bracket for fixing the magnet 222.
  • the armature 225 is U-shaped, one side of the U-shaped is fixed on the outer wall of the yoke 223, the free end of the other side of the U-shaped passes through the gap between the magnets 222, and one end of the linkage member 226 is connected to the free end
  • the other end of the interlocking member 226 is connected to the vibrating piece 227 by welding or gluing, and the electromagnetic coil 224 is wound around the U-shaped side passing through the magnet 222.
  • the linkage member 226 can have many forms, and the column structure is generally used.
  • the alternating current signal is transmitted to the electromagnetic coil 224, and the magnetic field generated by the electromagnetic coil 224 is transmitted to the armature 225, so that the armature 225 is magnetically polarized.
  • the gap between 222 vibrates, and the vibration is transmitted to the vibrating piece 227 through the linkage member 226, and the surrounding air is agitated through the vibrating piece 227 to conduct the sound through the sound outlet 220.
  • the front surface 228 of the moving iron unit 22 is pasted on the diaphragm 23.
  • the "front face of the moving iron unit” refers to the outer surface of the shielding case 221 on the side opposite to the vibrating piece 227 and close to the vibrating piece 227.
  • the back surface 229 of the moving iron unit 22 may also be pasted on the diaphragm 23.
  • the “reverse side of the moving iron unit” refers to the outer surface of the shielding case 221 on the side opposite to the diaphragm 227 and away from the diaphragm 227.
  • the moving iron unit 22 has two functions, one is to drive the diaphragm 23 to vibrate and sound, and the other is to transmit the sound generated by itself through the sound guide tube 24 to enhance the bass effect.
  • the moving iron unit 22 preferentially selects a low-frequency moving iron unit, or a medium-low-frequency or medium-frequency moving iron unit.
  • the moving iron unit 22 may be pasted in the center of the diaphragm 23.
  • the diaphragm 23 and the moving iron unit 22 may be designed according to the following size parameters, that is, the length of the diaphragm 23 is 15-20 mm, the width is 5-10 mm, and the thickness 0.3-0.8mm; the moving iron unit 22 has a length of 7-10mm, a width of 3-5mm, and a thickness of 1-3mm.
  • the diaphragm 23 may be made of a composite material.
  • synthetic materials of polyamide (PA), copper foil and bulletproof cloth, synthetic materials of polypropylene (PP) and glass fiber, synthetic materials of rubber and aluminum-magnesium alloy, synthetic materials of carbon fiber and glass fiber, paper Wait, this disclosure does not limit this.
  • PA polyamide
  • PP polypropylene
  • PP polypropylene
  • synthetic materials of rubber and aluminum-magnesium alloy synthetic materials of carbon fiber and glass fiber, paper Wait, this disclosure does not limit this.
  • the reason why the above composite materials are used is to ensure that the rigidity and elastic modulus of the diaphragm 23 meet the requirements of the conventional diaphragm and to ensure the sound quality, and second, to ensure the tear strength of the diaphragm 23, so that the diaphragm 23 will not be easily Damaged by external forces.
  • Each element of the above sound emitting module may adopt any appropriate connection method, such as screwing, bonding, ultrasonic welding, hot melting, etc., which is not limited in this disclosure.
  • the moving iron unit 22 is pasted on the diaphragm 23, one end of the sound guide tube 24 is inserted into the sound outlet 220 of the moving iron unit 22 and glued, and the other end of the sound guide tube 24 is inserted into the headphone socket 25 The sound guide tube is connected to the hole 251 and glued.
  • the sound outlet 220 of the moving iron unit 22 may be Set toward the headphone jack 25.
  • the length of the sound guide tube 24 is preferably 20-30 mm.
  • the path of the sound guide tube 24 should be as smooth as possible to avoid a right angle or a circle.
  • the inner circumference of the sound guide tube 24 is circular in cross section.
  • the present disclosure is not limited to this, and the inner circumferential cross section of the sound guide tube 24 may also have other shapes, such as a square shape, a triangular shape, or the like.
  • the inner circumferential cross-section and the outer circumferential cross-section of the sound guide tube 24 are both circular, the inner diameter of the sound guide tube 24 is 1-2 mm, and the outer diameter is 2-3 mm.
  • the sound guide tube 24 by providing the sound guide tube 24, the lower limit of low frequency can be raised, the effect of low frequency can be enhanced, and the loudness can be enhanced.
  • the material of the sound guide tube 24 may be polyvinyl chloride (PVC), acrylonitrile-butadiene-styrene plastic (ABS), or metal materials such as aluminum, titanium, and beryllium.
  • a partition 28 is formed inside the housing 10, and the partition 28 is integrally formed with the housing 10, the partition 28 and a part of the housing 10 and the diaphragm 23 together form an acoustic cavity, and the moving iron
  • the unit 22 is located in the sound cavity
  • the headphone jack 25 is located outside the sound cavity
  • the sound guide tube 24 passes through the partition 28 to connect the moving iron unit 22 and the headphone jack 25, and the signal line 21 of the electronic device 100 passes through the
  • the partition 28 is connected to the moving iron unit 22.
  • the diaphragm hole 121 and the headphone jack 122 may be disposed at any appropriate position on the housing 10, and the disclosure does not limit this.
  • the housing 10 includes a bottom plate 11 and a frame 12 formed around the bottom plate 11.
  • the diaphragm hole 121 and the headphone jack 122 are disposed on the frame 12.
  • the bezel 12 may include an upper bezel 12, a lower bezel 12, a left bezel 12, and a right bezel 12, in order to be more ergonomically designed, the diaphragm hole 121 and the headphone jack 122 may be provided on the On the border 12.
  • the diaphragm 23 By placing the diaphragm 23 directly on the frame 12, the diaphragm 23 can have both functions of the frame 12 and the earpiece diaphragm, and the earphone sound hole and the earpiece dust screen on the frame 12 can be omitted, and the sound is directly from The surface of the frame 12 is emitted. Moreover, by moving the position of the earpiece away from the screen 30 of the electronic device, the screen 30 can be maximized while the electronic device maintains a certain volume, which gives the user convenience and a better experience.
  • the electronic device 100 of the present disclosure may be a mobile phone, or a tablet computer, stereo, electric toy, or other devices that need to be pronounced, and the present disclosure does not limit this.
  • the test environment of the experimental data is an acoustic anechoic chamber, and the test equipment is CMU200, ACQUA system, and 3.3 artificial head.
  • CMU200 is an analog base station, used in electronic equipment audio testing, the role is to achieve wireless connection with electronic equipment, voice codec modulation, establish the call state.
  • the function of the ACQUA system is to analyze and test the audio signal of the call.
  • the artificial head is used to simulate the state of human conversation.
  • test process is as follows: establish the call status between the electronic equipment and CMU with the CMU200 special test white card, analyze the data using the ACQUA system and its supporting software, and obtain the corresponding test results.
  • the sound generation module includes a moving iron unit 22, a sound guide tube 24, a headphone jack 25 and a diaphragm 23, and the inner circumference of the sound guide tube 24 is circular, and the length of the sound guide tube 24 is above the preferred Within the range, there is no right angle or circle in the path of the sound guide tube 24.
  • the sound generating module includes a moving iron unit 22, a sound guide tube 24, a headphone socket 25 and a diaphragm 23, and the inner circumference of the sound guide tube 24 is square, and the length of the sound guide tube 24 is within the above-mentioned preferred range Inside, there is no right angle or circle in the path of the sound tube 24
  • the sound generating module includes a moving iron unit 22, a sound guide tube 24, an earphone socket 25, and a diaphragm 23, and the inner circumference of the sound guide tube 24 is circular, and the length of the sound guide tube 24 is 100 mm. There are no right angles or circles in the path of the sound guide tube 24.
  • the sound generation module includes a moving iron unit 22, a sound guide tube 24, a headphone jack 25 and a diaphragm 23, and the inner circumference of the sound guide tube 24 is circular, and the length of the sound guide tube 24 is above the preferred Within the range, right angles and circles appear on the path of the sound guide tube 24.
  • the sound generation module only includes the moving iron unit 22 and the diaphragm 23, but does not include the sound guide tube 24 and the headphone jack 25.
  • the sound generation module includes only the moving iron unit 22, the sound guide tube 24, and the headphone jack 25, and does not include the diaphragm 23.
  • the area between the upper and lower limits of the test curve is the ideal audio curve, which can play high-quality sound; the test curve exceeding the upper limit or lower than the lower limit is an undesirable audio curve, and the sound emitted will have defects.
  • Comparative Example 1 and Comparative Example 2 the upper limit and lower limit cannot be displayed because the sound loudness is too small.
  • Example 1 is superior to Example 2, Example 3, and implementation Example 4, Example 2, Example 3 and Example 4 are superior to Comparative Example 1 and Comparative Example 2.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)

Abstract

本公开涉及一种发声模块(20)及电子设备(100)。发声模块(20)包括振膜(23)、动铁单元(22)、导音管(24)和耳机插座(25)，动铁单元(22)连接于振膜(23)的一侧，耳机插座(25)上设置有导音管连接孔(251)，导音管(24)的一端与动铁单元(22)的出音孔(220)相连，另一端与耳机插座(25)的导音管连接孔(251)相连。

Description

发声模块及电子设备
相关申请的交叉引用
本公开基于申请号为201811401812.1，申请日为2018年11月22日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本公开作为参考。
技术领域
本公开涉及一种发声模块及具有该发声模块的电子设备。
背景技术
听筒作为电子设备内部将电信号转化为机械能，从而通过振动发声的重要部件，是电子设备必不可少的结构之一。
公告号为CN206559644U的专利文献公开一种压电陶瓷发声模块及电子设备，该专利的技术方案是将压电陶瓷发声元件和振动元件粘接在一起组合成压电陶瓷发声模块固定在外壳边框预留的通孔上，工作方式是压电陶瓷发声元件工作振动带动振动元件振动发出声音。
上述方案的主要存在以下缺陷：一、压电陶瓷发声元件直接粘接在振动元件上，占用了振动元件大量的有效振动面积，影响音质；二、振动元件采用的是厚板材异形结构，振动幅度较小，且不适用于手机听筒、耳机等小发声电器，发不出好的声音；三、没有声腔设计，影响声音集中发声、反馈，影响音质。
发明内容
本公开提供一种发声效果更好的发声模块。
为了实现上述目的，本公开提供一种发声模块，包括振膜、动铁单元、导音管和耳机插座，所述动铁单元连接于所述振膜的一侧，所述耳机插座上设置有导音管连接孔，所述导音管的一端与所述动铁单元的出音孔相连，另一端与所述耳机插座的所述导音管连接孔相连。
根据本公开的一些实施例，所述振膜由复合材料制成。
根据本公开的一些实施例，所述动铁单元粘贴在所述振膜上。
根据本公开的一些实施例，所述动铁单元的正面粘贴在所述振膜上。
根据本公开的一些实施例，所述动铁单元粘贴在所述振膜的正中位置。
根据本公开的一些实施例，所述动铁单元的出音孔朝向所述耳机插座的方向设置。
根据本公开的一些实施例，所述振膜的长度为15-20mm，宽度为5-10mm，厚度为0.3-0.8mm。
根据本公开的一些实施例，所述动铁单元的长度为7-10mm，宽度为3-5mm，厚度为1-3mm。
根据本公开的一些实施例，所述导音管的长度为20-30mm，内径为1-2mm，外径为2-3mm。
本公开的另一目的是提供一种发声效果更好的电子设备。
为了实现上述目的，本公开提供一种电子设备，包括：设备本体，所述设备本体的外壳上设置有振膜孔和耳机插孔；以及如上所述的发声模块，所述发声模块的振膜设置在所述振膜孔处，所述发声模块的动铁单元、导音管和耳机插座均位于所述外壳内，所述耳机插座设置在与所述耳机插孔对应的位置。
根据本公开的一些实施例，所述导音管连接孔设置在所述耳机插座背离所述耳机插孔的一侧。
根据本公开的一些实施例，所述外壳内侧形成有隔板，所述隔板与所述外壳一体成型，所述隔板、所述外壳的一部分、以及所述振膜共同围成声腔，所述动铁单元位于所述声腔内，所述耳机插座位于所述声腔外，所述导音管穿过所述隔板以连接所述动铁单元和所述耳机插座，所述电子设备的信号线穿过所述隔板以与所述动铁单元相连。
根据本公开的一些实施例，所述外壳包括底板以及形成在底板四周的边框，所述振膜孔和所述耳机插孔设置在所述边框上。
在本公开的发声模块中，通过振膜发出高频音效，通过导音管和耳机插座发出低频音效以补充低频部分，使得音质更加均匀完整。
本公开的其他特征和优点将在随后的具体实施方式部分予以详细说明。
附图说明
附图是用来提供对本公开的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本公开，但并不构成对本公开的限制。在附图中：
图1是本公开的电子设备的示意图；
图2是本公开的发声模块与电子设备外壳的装配示意图；
图3是本公开的发声模块的示意图；
图4是本公开的发声模块的爆炸图；
图5是本公开的发声模块中的动铁单元的一种实施例的剖视图；
图6是本公开的发声模块的工作原理图；
图7是根据本公开的实施例一的发声模块的频率响应曲线图；
图8是根据本公开的实施例二的发声模块的频率响应曲线图；
图9是根据本公开的实施例三的发声模块的频率响应曲线图；
图10是根据本公开的实施例四的发声模块的频率响应曲线图；
图11是对比例一的发声模块的频率响应曲线图；
图12是对比例二的发声模块的频率响应曲线图。
附图标记说明
10外壳                  11底板
12边框                  121振膜孔
122耳机插孔             20发声模块
21信号线                22动铁单元
220出音孔               221屏蔽壳体
222磁铁                 223磁轭
224电磁线圈             225衔铁
226联动部件             227振动片
228正面                 229反面
23振膜                  24导音管
25耳机插座              251导音管连接孔
28隔板                  30屏幕
100电子设备
具体实施方式
以下结合附图对本公开的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本公开，并不用于限制本公开。
本公开提供一种发声模块和具有该发声模块的电子设备。如图1至图4所示，所述电子设备100包括设备本体和发声模块20。设备本体的外壳10上设置有振膜孔121和耳机插孔122。
所述发声模块20包括振膜23、动铁单元22、导音管24和耳机插座25。振膜23设置在所述振膜孔121处，振膜23的中心可以与振膜孔121的中心对齐，振膜23的边缘可以与外壳10连接。动铁单元22、导音管24和耳机插座25均位于所述外壳10内。电子设备的信号线21与动铁单元22相连，动铁单元22设置在振膜23的内侧并与振膜23连接。耳机插座25设置在与耳机插孔122对应的位置并与外壳10连接。耳机插座25上设置有导音管连接孔251，导音管24的一端与动铁单元22的出音孔220相连，另一端与耳机插座25的所述导音管连接孔251相连。这里，耳机插座25可以为本领域技术人员所熟知的3.5耳机插座或4.5耳机插座。
动铁单元22是一个近封闭型的电磁振动器件，会随着输入的电信号产生振动，电信号发生变化振动状态也会发生变化。由于动铁单元22设置于振膜23上，所以，动铁单元22产生振动时会推动振膜23振动发出声音。同时，动铁单元22除了是一个振动器件外也是一个发声器件，声音从动铁单元22的出音孔220发出通过导音管24传递到耳机插座25的腔内，从耳机插座25的腔内将声音通过耳机插孔122传递出去，使得耳机插孔122兼作为听筒出声孔。
由于动铁单元22是直接设置在振膜23上的，两者的面积形状比例又比较有限，这样的设计会影响声音的低频效果，因此，本公开采用的振动单元是动铁单元22，动铁单元22不但可以振动，自身也可以独立发声，动铁单元22发出的声音经过导音管24传递出去可以加强低音效果，刚好填补振膜23低音部分的空缺，这样的复合式设计可以满足电子设备听筒的声学要求，提升音质。
动铁单元为本领域技术人员所熟知的声学器件，在此对其结构及工作原理仅作简要说明。
如图5所示，动铁单元22包括屏蔽壳体221、磁铁222、磁轭223、电磁线圈224、衔铁225、联动部件226、振动片227。屏蔽壳体221的一端设置有出音孔220，磁铁222为两个磁极不相同的永磁铁，两块磁铁222固定在中空磁轭223内部上下两面上，在两块磁铁222之间留有间隙，中空磁轭223作为固定磁铁222用的支架。衔铁225呈U型，U型的一侧固定在磁轭223的外侧壁上，U型的另一侧的自由端穿过磁铁222之间的间隙，联动部件226的一端与该自由端相连，联动部件226的另一端与振动片227通过焊接或胶粘连接，电磁线圈224绕设在U型的穿过磁铁222的一侧上。联动部件226可以有很多种形态，普遍采用的是柱式结构。
工作时，交流电信号传输给电磁线圈224，电磁线圈224产生的磁场传导至衔铁225，使衔铁225发生磁极化，随着衔铁225的磁极变化及磁场强度变化，衔铁225在磁力作 用下在磁铁222之间的间隙内振动，并通过联动部件226将该振动传导至振动片227，通过振动片227鼓动周围的空气将声音经出音孔220传导出去。
为了使振膜23产生更好的振动效果，在一些实施例中，动铁单元22的正面228粘贴在振膜23上。在本文中，“动铁单元的正面”是指屏蔽壳体221的与振动片227相对且靠近振动片227的一侧的外表面。在其他可能的实施方式中，也可以将动铁单元22的反面229粘贴在振膜23上。在本文中，“动铁单元的反面”是指屏蔽壳体221的与振动片227相对且远离振动片227的一侧的外表面。
在本公开中，动铁单元22有两个作用，一是带动振膜23振动发声，二是通过导音管24将自身产生的声音传递出去，增强低音效果。动铁单元22优先选用低频动铁单元，也可以选用中低频或中频动铁单元。
为了使振膜23上各点的振动更均匀，从而使声波能够向四周均匀扩散，在一种实施方式中，如图3所示，动铁单元22可以粘贴在振膜23的正中位置。
为了提升振膜23发声的音质，在一些实施例中，振膜23和动铁单元22可以按照如下尺寸参数进行设计，即，振膜23的长度为15-20mm，宽度为5-10mm，厚度为0.3-0.8mm；动铁单元22的长度为7-10mm，宽度为3-5mm，厚度为1-3mm。
为了使振膜23耐用不易损坏，振膜23可以由复合材料制成。优选采用聚酰胺(PA)、铜箔及防弹布的合成材料、也可选用聚丙烯(PP)与玻璃纤维的合成材料、橡胶与铝镁合金的合成材料、碳纤维与玻璃纤维的合成材料、纸等，本公开并不对此进行限制。之所以采用上述复合材料，一是为了保证振膜23的刚性和弹性模量符合常规振膜的要求进而保证音质，二是为了保证振膜23的抗撕裂强度，使振膜23不会轻易被外力损坏。
上述发声模块的各个元件可以采用任意适当的连接方式，例如螺接、粘接、超声波焊接、热熔等，本公开对此不作限制。在一种实施例中，动铁单元22粘贴在振膜23上，导音管24的一端插入动铁单元22的出音孔220并用胶水粘接，导音管24的另一端插入耳机插座25的导音管连接孔251并用胶水粘接。
为了减小导音管24的长度，节约布置空间，避免因导音管24过长造成声音衰减较大，在一些实施例中，如图3所示，动铁单元22的出音孔220可以朝向耳机插座25的方向设置。导音管24的长度优选为20-30mm。
为了使声波在导音管24内流畅地传递，如图3所示，导音管24的路径应尽量平滑，避免出现直角或打圈。
为了使声波在导音管24内流畅地传递，在一些实施例中，导音管24的内周横截面为圆形。然而，本公开不限于此，导音管24的内周横截面也可以为其他形状，例如方 形、三角形等。在一些实施例中，导音管24的内周横截面和外周横截面均为圆形，导音管24的内径为1-2mm，外径为2-3mm。
在本公开中，通过设置导音管24，能够提升低频下限，增强低频效果，加强响度。导音管24的材料可以选用聚氯乙烯(PVC)，也可以选用丙烯腈-丁二烯-苯乙烯塑料(ABS)，还可以选用铝、钛、铍等金属材料。
在一种实施例中，如图2所示，外壳10内侧形成有隔板28，隔板28与外壳10一体形成，隔板28与外壳10的一部分以及振膜23共同围成声腔，动铁单元22位于所述声腔内，耳机插座25位于所述声腔外，导音管24穿过隔板28以连接动铁单元22和耳机插座25，所述电子设备100的信号线21穿过所述隔板28以与动铁单元22相连。通过形成上述声腔，一方面可以使振动波朝着振膜23的方向集中，另一方面可以增加低音效果。
所述振膜孔121和耳机插孔122可以设置在外壳10上任意适当的位置，本公开对此不作限制。在一种实施例中，如图2所示，外壳10包括底板11以及形成在底板11四周的边框12，所述振膜孔121和耳机插孔122设置在边框12上。根据本公开的一些实施例，边框12可以包括上边框12、下边框12、左边框12和右边框12，为了更加符合人机工程学设计，振膜孔121和耳机插孔122可以设置在上边框12上。
通过将振膜23直接置于边框12上，使得振膜23可以兼具边框12和听筒膜片两种功能，并且可以省去边框12上的听筒出声孔及听筒防尘网，声音直接从边框12表面发出。并且，通过将听筒位置移离电子设备的屏幕30，可以在电子设备保持一定体积下实现屏幕30最大化，给用户便利和更好的体验。
本公开的电子设备100可以是手机，也可以是平板电脑、音响、电动玩具等需要发音的设备，本公开对此不作限制。
以下通过实验数据对本公开的发声模块的发声效果进行说明。
实验数据的测试环境为声学消声室，测试设备为CMU200、ACQUA系统、以及3.3人工头。其中，CMU200是一个模拟基站，用于电子设备音频测试当中，作用是实现与电子设备的无线连接，进行语音编解码调制，建立通话状态。ACQUA系统的作用是对通话音频信号进行分析、测试。3.3人工头用于模拟人通话时的状态。
测试过程为：用CMU200专用测试白卡建立电子设备与CMU之间的通话状态，利用ACQUA系统以及其配套软件，分析数据，得到相应的测试结果。
图7是根据本公开的实施例一的发声模块的频率响应曲线图。在该实施例中，发声模块包括动铁单元22、导音管24、耳机插座25和振膜23，并且导音管24的内周横截 面为圆形，导音管24的长度在上述优选范围内，导音管24的路径上没有出现直角或打圈。
图8是根据本公开的实施例二的发声模块的频率响应曲线图。在该实施例中，发声模块包括动铁单元22、导音管24、耳机插座25和振膜23，并且导音管24的内周横截面为方形，导音管24的长度在上述优选范围内，导音管24的路径上没有出现直角或打圈
图9是根据本公开的实施例三的发声模块的频率响应曲线图。在该实施例中，发声模块包括动铁单元22、导音管24、耳机插座25和振膜23，并且导音管24的内周横截面为圆形，导音管24的长度为100mm，导音管24的路径上没有出现直角或打圈。
图10是根据本公开的实施例四的发声模块的频率响应曲线图。在该实施例中，发声模块包括动铁单元22、导音管24、耳机插座25和振膜23，并且导音管24的内周横截面为圆形，导音管24的长度在上述优选范围内，导音管24的路径上出现了直角和打圈。
图11是对比例一的发声模块的频率响应曲线图。在该对比例中，发声模块仅包括动铁单元22和振膜23，不包括导音管24和耳机插座25。
图12是对比例二的发声模块的频率响应曲线图。在该对比例中，发声模块仅包括动铁单元22、导音管24和耳机插座25，不包括振膜23。
各图中，测试曲线在上限和下限之间的区域为理想音频曲线，可以播放出优质的声音；测试曲线超出上限或低于下限为不理想音频曲线，发出的声音会有瑕疵。不理想音频曲线越接近上限和下限之间的区域，播放出声音的瑕疵越少，反之瑕疵会越多。其中，在对比例一和对比例二中，由于声音响度太小，导致无法显示出上限和下限。
由实施例一、实施例二、实施例三、实施例四、对比例一、对比例二的实验数据可以看出，在声音效果方面，实施例一优于实施例二、实施例三和实施例四，实施例二、实施例三和实施例四均优于对比例一和对比例二。
以上结合附图详细描述了本公开的优选实施方式，但是，本公开并不限于上述实施方式中的具体细节，在本公开的技术构思范围内，可以对本公开的技术方案进行多种简单变型，这些简单变型均属于本公开的保护范围。
另外需要说明的是，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合。为了避免不必要的重复，本公开对各种可能的组合方式不再另行说明。
此外，本公开的各种不同的实施方式之间也可以进行任意组合，只要其不违背本公开的思想，其同样应当视为本公开所公开的内容。

Claims (13)

  1. 一种发声模块，其特征在于，包括振膜(23)、动铁单元(22)、导音管(24)和耳机插座(25)，所述动铁单元(22)连接于所述振膜(23)的一侧，所述耳机插座(25)上设置有导音管连接孔(251)，所述导音管(24)的一端与所述动铁单元(22)的出音孔(220)相连，另一端与所述耳机插座(25)的所述导音管连接孔(251)相连。
  2. 根据权利要求1所述的发声模块，其特征在于，所述振膜(23)由复合材料制成。
  3. 根据权利要求1或2所述的发声模块，其特征在于，所述动铁单元(22)粘贴在所述振膜(23)上。
  4. 根据权利要求3所述的发声模块，其特征在于，所述动铁单元(22)的正面粘贴在所述振膜(23)上。
  5. 根据权利要求3所述的发声模块，其特征在于，所述动铁单元(22)粘贴在所述振膜(23)的正中位置。
  6. 根据权利要求1-5中任一项所述的发声模块，其特征在于，所述动铁单元(22)的出音孔(220)朝向所述耳机插座(25)的方向设置。
  7. 根据权利要求1-6中任一项所述的发声模块，其特征在于，所述振膜(23)的长度为15-20mm，宽度为5-10mm，厚度为0.3-0.8mm。
  8. 根据权利要求1-7中任一项所述的发声模块，其特征在于，所述动铁单元(22)的长度为7-10mm，宽度为3-5mm，厚度为1-3mm。
  9. 根据权利要求1-8中任一项所述的发声模块，其特征在于，所述导音管(24)的长度为20-30mm，内径为1-2mm，外径为2-3mm。
  10. 一种电子设备，其特征在于，包括：
    设备本体，所述设备本体的外壳(10)上设置有振膜孔(121)和耳机插孔(122)；以及
    根据权利要求1-9中任一项所述的发声模块，所述发声模块的振膜(23)设置在所述振膜孔(121)处，所述发声模块的动铁单元(22)、导音管(24)和耳机插座(25)均位于所述外壳(10)内，所述耳机插座(25)设置在与所述耳机插孔(122)对应的位置。
  11. 根据权利要求10所述的电子设备，其特征在于，所述导音管连接孔(251)设置在所述耳机插座(25)背离所述耳机插孔(122)的一侧。
  12. 根据权利要求10或11所述的电子设备，其特征在于，所述外壳(10)内侧形成有隔板(28)，所述隔板(28)与所述外壳(10)一体成型，所述隔板(28)、所述外壳(10)的一部分、以及所述振膜(23)共同围成声腔，所述动铁单元(22)位于所述声腔内，所述耳机插座(25)位于所述声腔外，所述导音管(24)穿过所述隔板(28)以连接所述动铁单元(22)和所述耳机插座(25)，所述电子设备的信号线(21)穿过所述隔板(28)以与所述动铁单元(22)相连。
  13. 根据权利要求10-12中任一项所述的电子设备，其特征在于，所述外壳(10)包括底板(11)以及形成在底板(11)四周的边框(12)，所述振膜孔(121)和所述耳机插孔(122)设置在所述边框(12)上。
PCT/CN2019/118416 2018-11-22 2019-11-14 发声模块及电子设备 WO2020103757A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811401812.1A CN111212367B (zh) 2018-11-22 2018-11-22 发声模块及电子设备
CN201811401812.1 2018-11-22

Publications (1)

Publication Number Publication Date
WO2020103757A1 true WO2020103757A1 (zh) 2020-05-28

Family

ID=70774585

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/118416 WO2020103757A1 (zh) 2018-11-22 2019-11-14 发声模块及电子设备

Country Status (2)

Country Link
CN (1) CN111212367B (zh)
WO (1) WO2020103757A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014166287A1 (zh) * 2012-12-25 2014-10-16 苏州恒听电子有限公司 超薄型受话器
CN205864742U (zh) * 2016-06-15 2017-01-04 万魔声学科技有限公司 动铁模组及耳机
CN106993244A (zh) * 2017-03-31 2017-07-28 苏州逸巛声学科技有限公司 一种受话器及其装配工艺
CN108055630A (zh) * 2017-11-24 2018-05-18 苏州逸巛声学科技有限公司 一种受话器及其装配方法
CN108282728A (zh) * 2018-03-30 2018-07-13 苏州倍声声学技术有限公司 受话器及电子设备

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013025078A (ja) * 2011-07-21 2013-02-04 Hamanako Denso Co Ltd 平型電気式ホーン
CN205491110U (zh) * 2016-01-12 2016-08-17 常州阿木奇声学科技有限公司 一种动铁式振动器
CN106936955A (zh) * 2017-03-07 2017-07-07 广东欧珀移动通信有限公司 终端
CN107809715B (zh) * 2017-09-28 2020-03-31 深圳倍声声学技术有限公司 一种受话器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014166287A1 (zh) * 2012-12-25 2014-10-16 苏州恒听电子有限公司 超薄型受话器
CN205864742U (zh) * 2016-06-15 2017-01-04 万魔声学科技有限公司 动铁模组及耳机
CN106993244A (zh) * 2017-03-31 2017-07-28 苏州逸巛声学科技有限公司 一种受话器及其装配工艺
CN108055630A (zh) * 2017-11-24 2018-05-18 苏州逸巛声学科技有限公司 一种受话器及其装配方法
CN108282728A (zh) * 2018-03-30 2018-07-13 苏州倍声声学技术有限公司 受话器及电子设备

Also Published As

Publication number Publication date
CN111212367B (zh) 2021-06-18
CN111212367A (zh) 2020-05-29

Similar Documents

Publication Publication Date Title
CN105721996B (zh) 一种发声结构单元、包含该单元的耳机及驱动发声方法
US8135156B2 (en) Sound reproduction device with enhanced low-frequency sound effect
WO2020000809A1 (zh) 扬声器及便携终端
WO2017063262A1 (zh) 扬声器
CN104168527B (zh) 微型扬声器
TWI689209B (zh) 揚聲器、揚聲裝置及行動終端
CN209787426U (zh) 一种振动发声装置及电子设备
CN104349251B (zh) 扬声器结构
CN104822112A (zh) 扬声器装置
CN103414985B (zh) 微型扬声器的悬挂结构
CN104581580A (zh) 具有改良型结构的受话器
WO2021098563A1 (zh) 扬声器模组及便携式电子设备
CN104581579A (zh) 改进型小体积受话器
WO2021258653A1 (zh) 扬声器和耳机
CN105657621A (zh) 一种扬声器组件及移动终端
CN104506988A (zh) 新型骨传导受话器
TW201515473A (zh) 壓電喇叭
WO2020103757A1 (zh) 发声模块及电子设备
WO2021208772A1 (zh) 一种电子设备
CN204616080U (zh) 扬声器装置
KR20050054653A (ko) 평판형 스피커용 보이스코일판
CN211296916U (zh) 重低音同轴触觉震动耳机结构
CN209787380U (zh) 一种圈铁一体式发声单元及一种耳机
CN208424686U (zh) 同轴主被动振膜技术的耳机
TW202147864A (zh) 揚聲器、耳機、助聽器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19887472

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19887472

Country of ref document: EP

Kind code of ref document: A1