WO2021168631A1 - 移动终端 - Google Patents

移动终端 Download PDF

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Publication number
WO2021168631A1
WO2021168631A1 PCT/CN2020/076486 CN2020076486W WO2021168631A1 WO 2021168631 A1 WO2021168631 A1 WO 2021168631A1 CN 2020076486 W CN2020076486 W CN 2020076486W WO 2021168631 A1 WO2021168631 A1 WO 2021168631A1
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WO
WIPO (PCT)
Prior art keywords
dust
proof net
sound
mobile terminal
area
Prior art date
Application number
PCT/CN2020/076486
Other languages
English (en)
French (fr)
Inventor
张富坤
雷卫强
华展翼
Original Assignee
海能达通信股份有限公司
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 海能达通信股份有限公司 filed Critical 海能达通信股份有限公司
Priority to CN202080097518.5A priority Critical patent/CN115552922A/zh
Priority to DE112020006436.0T priority patent/DE112020006436T5/de
Priority to PCT/CN2020/076486 priority patent/WO2021168631A1/zh
Priority to GB2213692.3A priority patent/GB2608077B/en
Publication of WO2021168631A1 publication Critical patent/WO2021168631A1/zh

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    • 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
    • H04R1/023—Screens for loudspeakers
    • 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
    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2873—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

Definitions

  • This application relates to the field of communication technology, and in particular to a mobile terminal.
  • the speaker assembly usually includes a dust-proof net for dust prevention, speaker diaphragm protection, and sound quality adjustment.
  • the ID product design
  • the dust-proof net in the prior art is usually arranged to fit the shell, that is, there is no gap between the dust-proof net and the shell, and the mesh part of the dust-proof net It only covers the sound outlet, that is, the area of the mesh part is roughly equal to the area of the sound outlet. At this time, sound and air can only pass through the smaller area of the mesh part.
  • the present application provides a mobile terminal, including: a housing formed with a receiving cavity and a sound outlet; a speaker assembly arranged in the receiving cavity, and sound is output from the sound outlet;
  • the speaker assembly includes a horn and a dust-proof net.
  • the dust-proof net is fixed on the housing and is located between the horn and the housing; the horn includes a vibrating diaphragm for vibrating and sounding.
  • the area of the sound outlet accounts for no more than 15% of the effective area of the vibrating diaphragm; wherein the mesh area of the dust-proof net is larger than the area of the sound outlet, and the dust-proof net and the shell and
  • the speakers are arranged at intervals.
  • the housing includes: a front housing formed with a sound outlet, and a side of the front housing close to the dust-proof net is formed with a connecting portion protruding toward the dust-proof net;
  • the dust-proof net is fixed to the front shell and includes: a plurality of mesh parts; an adhesive part, formed on the side of the dust-proof net near the front shell, and includes a first adhesive strip and a first Two adhesive strips, the first adhesive strip is arranged around the peripheral edge of the dust-proof net, and the second adhesive strip is used to separate the dust-proof net to form a plurality of the mesh parts, so that The plurality of mesh parts avoid the resonance frequency points of the horn and the receiving cavity; wherein, the connecting part and the bonding part are arranged correspondingly to bond the bonding part.
  • the second adhesive strip is arranged in a crisscross shape, and the end of the second adhesive strip is connected with the first adhesive strip; the second adhesive strip connects
  • the dust-proof net is divided into four mesh parts, the connecting part and the bonding part are arranged correspondingly to divide the front shell in the receiving cavity into four sound emitting parts, and several The sound outlets are evenly distributed in the sound outlet.
  • the area of any one of the mesh parts is larger than the area of the sound outlet in the corresponding sound outlet.
  • each sound outlet is provided with 1 sound outlet.
  • the mesh portion and the bonding portion are integrally formed, and the bonding portion and the connecting portion are bonded and fixed to each other by back glue.
  • the housing further includes: a side wall extending from the side of the front shell close to the dust-proof net to the dust-proof net; a first flange surrounding the inner side of the side wall And is formed by protruding from the side of the front shell toward the dust-proof net toward the dust-proof net; One side is formed to protrude toward the front shell; wherein, the second flange is fixedly connected to the first flange.
  • the protrusion height of the first flange is greater than the protrusion height of the connecting portion.
  • first flange and the second flange are bonded and fixed to each other through adhesive.
  • the mesh area of the dust-proof net used in the mobile terminal provided by the present application is larger than the area of the sound outlet, and the dust-proof net and the housing are spaced apart, so that the sound propagates to the output through the space between the dust-proof net and the housing
  • the air-permeable area of the dust-proof net is increased, and the thermal viscosity effect is reduced, thereby reducing the attenuation effect of the dust-proof net on the sound and increasing the signal-to-noise ratio; and the mobile terminal of the present application passes through the dust-proof net and the housing
  • the fixed arrangement, the spacing arrangement of the dust-proof net and the horn and the shell avoids the occurrence of abnormal sound due to the vibration of the dust-proof net and the shell and the horn.
  • Figure 1 is a schematic diagram of part of the structure of the mobile terminal of this application.
  • FIG. 2 is an exploded schematic diagram of a part of the structure of the speaker assembly and the front case in the mobile terminal of this application;
  • FIG. 3 is a schematic diagram of the dust-proof net structure of the mobile terminal of this application.
  • FIG. 4 is a comparison diagram of frequency response curves between the mobile terminal of this application and the mobile terminal in the prior art
  • the present application provides a mobile terminal 100, which includes a housing 1 and a speaker assembly 2.
  • the housing 1 is formed with a receiving cavity 11 and a sound outlet 12, and the speaker assembly 2 is disposed in the receiving cavity 11, and the sound is output from the sound outlet 12.
  • the mobile terminal 100 may be a walkie-talkie, a speaker, a mobile phone, a smart wearable watch capable of sounding, a navigator and other devices capable of sounding.
  • the mobile terminal 100 of the present application may be a PNC380 type walkie-talkie.
  • the speaker assembly 2 includes a horn 21 and a dust-proof net 22, and the dust-proof net 22 is fixed on the housing 1 and is located between the horn 21 and the housing 1.
  • the dust-proof net 22 has the functions of preventing dust, protecting the speaker diaphragm, and adjusting the sound quality.
  • the arrangement of the dust-proof net 22 prevents dust or moisture from entering the mobile terminal 100 from the sound outlet 12, which affects the effect of the speaker assembly 2 or the functions of other components in the mobile terminal 100.
  • the horn 21 includes a vibrating diaphragm (not shown) for vibrating and sounding. Due to the cooperation of the keyboard and other components, the ID will be limited in space when designing the area of the sound outlet 12 in the panel. Therefore, currently the ratio of the area of the sound outlet 12 to the effective area of the vibrating diaphragm is not more than 15%.
  • the simple algorithm for the effective area of the vibrating diaphragm is the plane area corresponding to the outer diameter of the vibrating diaphragm.
  • the mesh area of the dust-proof net 22 is larger than the area of the sound outlet 12, and the dust-proof net 22 is spaced apart from the housing 1 and the speaker 21.
  • the separation space between the dust-proof net 22 and the housing 1 propagates and finally the propagation path to the sound outlet 12, which increases the area of sound and air passing through the dust-proof net 22, reduces the thermal sticking effect, and thus reduces the protection
  • the dust net 22 affects the sound attenuation and increases the signal-to-noise ratio; and the mobile terminal 100 of the present application is fixedly arranged with the dust net 22 and the housing 1, and the dust net 22 is arranged at intervals with the horn 21 and the housing 1. The occurrence of abnormal sound caused by the vibration of the dust-proof net 22 and the impact of the casing 1 and the horn 21 is avoided.
  • the principle of sound attenuation in the prior art is: according to the formula of Newton's law of viscosity, the shear stress of the fluid is proportional to the shear deformation angular velocity. The speed of particles close to the boundary during sound propagation is very slow and approaches zero on the boundary. However, in the containing cavity 11, the particles move at a standard acoustic velocity according to Euler's equation. Under the effect of viscosity, the air is stuck to the boundary, so the boundary velocity is zero, and the neighboring particles also slow down, resulting in a loss of overall energy, or because of the viscous dissipation caused by shear, sound energy is converted into heat energy. .
  • the housing 1 includes a front shell 13, a rear shell (not shown), and a side wall 14 extending from a side of the front shell 13 close to the dust-proof net 22 to the dust-proof net 22.
  • the front shell 13 is formed with the sound outlet 12, and the dust-proof net 22 is fixed to the front shell 13 and includes a plurality of mesh portions 221 and is formed on the dust-proof net 22 close to the front shell 13
  • the adhesive part 222 on one side.
  • the bonding portion 222 includes a first bonding strip 2221 and a second bonding strip 2222, the first bonding strip 2221 is arranged around the peripheral edge of the dust-proof net 22, and the second bonding The strip 2222 is used to separate the dust-proof net 22 to form a plurality of the net-shaped parts 221. Since the horn 21 and the receiving cavity 11 have resonant frequency points, the second adhesive strip 2222 is arranged so that the plurality of mesh portions 221 avoid the resonant frequency points of the horn 21 and the receiving cavity 11 .
  • each mesh portion 221 of the dust-proof net 22 is controlled through the fixing method of the above-mentioned block-shaped dust-proof net 22
  • the shape avoids the resonance frequency point and voice frequency band of the speaker 21 and the containing cavity 11, and controls the modal shape and amplitude of the dust-proof net 22, thereby avoiding abnormal sound and effectively ensuring the signal-to-noise ratio.
  • the second adhesive strip 2222 is arranged in a crisscross shape, and the end of the second adhesive strip 2222 is connected to the first adhesive strip 2221; the second adhesive strip 2222 connects
  • the dust-proof net 22 is divided into four net-shaped parts 221.
  • the shape of the second adhesive strip 2222 and the separation of the dust-proof net 22 can be adjusted according to actual needs.
  • the adhesive part 222 divides the dust-proof net 22 into four mesh parts with different areas. 221, that is, the intersection of the first adhesive strip 2221 and the second adhesive strip 2222 is not located at the center point of the entire dust-proof net 22.
  • the specific location of the bonding portion 222 and the division of the mesh portion 221 can be set according to the specific resonant frequency points of different speaker assemblies 2.
  • a connecting portion 131 is formed protruding from the side of the front shell 13 close to the dust-proof net 22 toward the dust-proof net 22, and the connecting portion 131 and the bonding portion 222 are arranged correspondingly to bond The bonding portion 222.
  • the connecting portion 131 includes a first connecting strip 1311 and a second connecting strip 1312, the first adhesive strip 2221 is adhesively fixed to the first connecting strip 1311, and the second adhesive strip 2222 is connected to the The second connecting strip 1312 is adhesively fixed.
  • the mesh portion 221 and the bonding portion 222 are integrally formed, and the bonding portion 222 and the connecting portion 131 are bonded and fixed to each other through adhesive.
  • the connecting portion 131 and the bonding portion 222 are arranged correspondingly to divide the front shell 13 in the receiving cavity 11 into four sound outlets 132, and a plurality of the sound outlets 12 are evenly distributed in The sound output portion 132.
  • the dust-proof net 22 is firmly fixed to the front shell 13 to ensure the tension of the dust-proof net 22 and avoid the generation of abnormal noise due to insufficient tension, which is conducive to the thinning of the mobile terminal; in addition, the connection The protruding thickness of the portion 131 ensures the separation distance between the dust-proof net 22 and the front shell 13 and reduces the sound loss.
  • the adhesive portion 222 and the connecting portion 131 may also be fixed in other ways, as long as the effect of connecting and fixing the adhesive portion 222 and the connecting portion 131 is achieved, Then the purpose of this application can be achieved.
  • each sound outlet 132 is provided with one sound outlet 12.
  • the number of sound outlets 12 can also be increased or decreased according to actual conditions.
  • the area of any one of the mesh portions 221 is larger than the area of the sound outlet 12 in the corresponding sound output portion 132. Therefore, when any sound outlet 12 emits sound, the sound propagates from the mesh portion 221 of the dust-proof net 22 to the corresponding sound outlet 12 through the space between the dust-proof net 22 and the front shell 13, thereby Enhance the radiation ability of the sound transmitted from any of the sound outlets 12.
  • the housing 1 includes a first flange 15 arranged around the inner side of the side wall 14, and the first flange 15 extends from the front shell 13 toward the dust-proof net 22 to the dust-proof net 22.
  • the dust net 22 is formed by protruding;
  • the horn 21 includes a second flange 211 protruding from the side of the peripheral edge of the horn 21 close to the front shell 13 toward the front shell 13, and the second convex
  • the rim 211 is fixedly connected to the first flange 15. Therefore, the present application realizes the firm fixation of the horn 21 and the front shell 13.
  • the first flange 15 and the second flange 211 are also bonded and fixed to each other through adhesive.
  • the first flange 15 and the second flange 211 can be fixed in other ways, as long as the horn 21 is fixed to the front shell 13. The purpose of this application.
  • the protrusion height of the first flange 15 is greater than the protrusion height of the connecting portion 131. Therefore, when the speaker assembly 2 of the present application is working, the dust-proof net 22 will not collide with the horn 21 and the front shell 13.
  • the protrusion height of the connecting portion 131 is designed according to the maximum amplitude of the dust-proof net 22 and does not touch the front shell 13, and the protrusion height of the first flange 15 is designed according to the maximum amplitude of the dust-proof net 22.
  • the internal and the speaker 21 do not touch the design.
  • Figure 4 is a comparison diagram of the frequency response curve of the mobile terminal 100 of this application and the mobile terminal in the prior art in the acoustic performance test.
  • Technology mobile terminal It can be seen from FIG. 4 that the loudness of the mobile terminal 100 of the present application is significantly improved in both low and medium frequencies and high frequencies. Among them, the loudness is increased by nearly 4dB at 1kHz and 3.5kHz, and the phase is shifted at 3.5kHz, and the FM extension is slightly extended. promote. Therefore, the mobile terminal 100 of the present application can use smaller power consumption to achieve sound with the same loudness, which can reduce energy consumption while ensuring the sound quality.
  • the mesh area of the dust-proof net 22 used in the mobile terminal 100 provided by the present application is larger than the area of the sound outlet 12, and the dust-proof net 22 is spaced from the housing 1, so that the sound passes through the dust-proof net 22 and The space between the shells 1 spreads to the sound outlet 12, increases the air-permeable area of the dust-proof net 22, reduces the thermal viscosity effect, thus reduces the attenuation effect of the dust-proof net 22 on the sound, and increases the signal-to-noise ratio;
  • the dust-proof net 22 and the housing 1 are fixedly arranged, and the dust-proof net 22 and the horn 21 and the housing 1 are arranged at intervals, so as to avoid the shock of the dust-proof net 22 and the housing 1 and the horn. 21 The situation that caused the abnormal sound.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)

Abstract

本申请涉及一种移动终端，包括：壳体，形成有收容腔和出音口；扬声器组件，设置于收容腔内，由出音口出音。扬声器组件包括喇叭和防尘网，防尘网固定于壳体上，且位于喇叭和壳体之间；喇叭包括用于振动发声的振动膜片，出音口面积占振动膜片有效面积的比例不大于15％；其中，防尘网的网状面积大于出音口的面积，防尘网与壳体及喇叭均间隔设置。本申请移动终端加大了防尘网的网状面积，使声音经防尘网与壳体之间的间隔空间传播至出音口，增加了防尘网的透气面积，减少了热粘滞效应，因而减少了防尘网对声音的衰减影响，增加信噪比，且避免了由于防尘网震动碰撞壳体与喇叭导致异音产生的情况。

Description

移动终端 技术领域
本申请涉及通信技术领域，尤其涉及一种移动终端。
背景技术
随着科技的发展，人们对移动终端的要求越来越高，如需要更好的音效等。目前的移动终端越来越轻薄化，其为扬声器组件留出的空间非常有限，不利于声音的辐射。
扬声器组件通常包括用于防尘、保护喇叭膜片、音质调节的防尘网，但由于键盘与其他组件的配合，ID(产品外观设计)在设计面板中出音口面积时会受到空间限制。在上述喇叭出音口面积设计本身就极限的情况下，现有技术中防尘网通常为贴合壳体设置，即防尘网与壳体之间无间隙，并且防尘网的网状部仅恰好覆盖出音口，即网状部的面积大致等于出音口的面积，此时声音及空气仅能通过较小的网状部的面积，不仅声损较大，声阻增加，声音辐射能力减小，牺牲了声学性能，而且通过网状部的空气速度增大，空气与防尘网的热粘滞效应增加，响度减弱，风噪增加。
因此，为解决上述问题，必须设计一种新的移动终端。
发明内容
为实现上述目的，本申请提供了一种移动终端，包括：壳体，形成有收容腔和出音口；扬声器组件，设置于所述收容腔内，由所述出音口出音；所述扬声器组件包括喇叭和防尘网，所述防尘网固定于所述壳体上，且位于所述喇叭和所述壳体之间；所述喇叭包括用于振动发声的振动膜片，所述出音口面积占所述振动膜片有效面积的比例不大于15％；其中，所述防尘网的网状面积大于所述出音口的面积，所述防尘网与所述壳体及所述喇叭均间隔设置。
作为本申请的进一步改进，所述壳体包括：前壳，形成有出音口，且所述前壳靠近所述防尘网的一侧向所述防尘网凸伸形成有连接部；后壳；所述防尘网固定于所述前壳，包括：若干网状部；粘接部，形成于所述防尘网靠近所述前壳的一侧，且包括第一粘接条及第二粘接条，所述第一粘接条围绕所述防尘网的周圈边缘设置，所述第二粘接条用以分隔所述防尘网以形成若干所述网状部，以使若干所述网状部避开所述喇叭与所述收容腔的谐振频率点；其中，所 述连接部与所述粘接部对应设置以粘接所述粘接部。
作为本申请的进一步改进，所述第二粘接条呈十字交叉状设置，且所述第二粘接条的端部与所述第一粘接条相连接；所述第二粘接条将所述防尘网分隔成四个所述网状部，所述连接部与所述粘接部对应设置以将所述收容腔内的所述前壳分隔成四个出音部，若干所述出音口均匀分布于所述出音部中。
作为本申请的进一步改进，任一所述网状部的面积大于对应所述出音部中所述出音口的面积。
作为本申请的进一步改进，所述出音口设有4个，且每个出音部中设有1个出音口。
作为本申请的进一步改进，所述网状部与所述粘接部一体成型，且所述粘接部与所述连接部通过背胶相互粘接固定。
作为本申请的进一步改进，所述壳体还包括：侧壁，自所述前壳靠近所述防尘网的一侧向所述防尘网延伸；第一凸缘，围绕所述侧壁内侧设置，且自所述前壳朝向所述防尘网的一侧向所述防尘网凸伸形成；所述喇叭包括：第二凸缘，自所述喇叭周圈边缘靠近所述前壳的一侧向所述前壳凸伸形成；其中，所述第二凸缘与所述第一凸缘固定连接。
作为本申请的进一步改进，所述第一凸缘的凸伸高度大于所述连接部的凸伸高度。
作为本申请的进一步改进，所述第一凸缘与所述第二凸缘通过背胶相互粘接固定。
与现有技术相比，本申请的有益效果在于：
本申请提供的移动终端采用的防尘网的网状面积大于出音口的面积，且防尘网与壳体间隔设置，从而声音经防尘网与壳体之间的间隔空间传播至出音口，增加了防尘网的透气面积，减少了热粘滞效应，因而减少了防尘网对声音的衰减影响，增加信噪比；并且，本申请的移动终端通过防尘网与壳体的固定设置、防尘网与喇叭及壳体的间隔设置，避免了由于防尘网震动碰撞壳体与喇叭导致异音产生的情况。
【附图说明】
图1为本申请移动终端的部分结构示意图；
图2为本申请移动终端中扬声器组件与前壳的部分结构分解示意图；
图3为本申请移动终端的防尘网结构示意图；
图4为本申请移动终端与现有技术中移动终端的频响曲线对比图；
【具体实施方式】
以下将结合附图所示的具体实施方式对本申请进行详细描述。但这些实施方式并不限制本申请，本领域的普通技术人员根据这些实施方式所做出的结构、方法、或功能上的变换均包含在本申请的保护范围内。
参见图1-图3，本申请提供了一种移动终端100，包括壳体1及扬声器组件2。所述壳体1形成有收容腔11和出音口12，所述扬声器组件2设置于所述收容腔11内，且由所述出音口12出音。需要说明的是，所述移动终端100可以是对讲机、音箱、手机、可发声的智能穿戴手表以及导航仪等可以发声的设备。例如，本申请的移动终端100可为PNC380机型的对讲机。
其中，所述扬声器组件2，包括喇叭21和防尘网22，所述防尘网22固定于所述壳体1上，且位于所述喇叭21和所述壳体1之间。所述防尘网22具有防尘、保护喇叭膜片、音质调节的作用。具体地，通过所述防尘网22的设置，避免灰尘或水汽由所述出音口12进入所述移动终端100内，影响扬声器组件2的效果或移动终端100内其他元件的功能。
进一步地，所述喇叭21包括用于振动发声的振动膜片(未图示)。由于键盘与其他组件的配合，ID在设计面板中出音口12面积时会受到空间限制，因此目前所述出音口12面积占所述振动膜片有效面积的比例不大于15％。其中，所述振动膜片的有效面积的简单算法为振动膜片的外径对应的平面面积。
另外，在本申请中，所述防尘网22的网状面积大于所述出音口12的面积，所述防尘网22与所述壳体1及所述喇叭21均间隔设置。
在所述扬声器组件2工作时，声音经所述防尘网22与所述壳体1之间的间隔空间传播至所述出音口12。与现有技术中防尘网22紧贴壳体1设置，且防尘网22的网状面积刚好等于出音口12面积相比，本申请加大了防尘网22的网状面积，改变了传统的导声路径，即将声音由现有技术中仅通过最小网状面积的防尘网22传播至出音口12的传播路径，改为声音经较大网状面积的防尘网22至防尘网22与壳体1之间的间隔空间传播并最终至出音口12的传播路径，增大了声音和空气通过防尘网22的面积，减少了热粘滞效应，因而减少了防尘网22对声音的衰减影响，增加信噪比；并且，本申请的移动终端100通过防尘网 22与壳体1的固定设置、防尘网22与喇叭21及壳体1的间隔设置，避免了由于防尘网22震动碰撞壳体1与喇叭21导致异音产生的情况。
具体地，现有技术中声音衰减的原理为：根据牛顿粘性定律公式，流体的切应力与剪切变形角速度成正比。声音在传播过程中靠近边界的粒子速度很慢，在边界上趋近于零。然而在收容腔11内，粒子按照欧拉方程以标准的声学速度运动。在粘性作用下，空气被粘到边界上，因此边界速度为零，邻近的粒子也慢了下来，导致了总体能量的损耗，或者说由于剪切产生的粘性耗散，声能转换成了热能。但是在收容腔11内，分子可以自由地运动，但由于防尘网22的网状面积较小，所以分子也就所剩无几了。简言之，防尘网22的网状面积越小，空气通过防尘网22的速度越大，边缘部分空气体受到的剪切力越大，从而空气在防尘网22边缘的运动粘度越大，声损越大，进而声音响度越小，也即声音传递的能量越小。
相反地，在本申请中，由于防尘网22的网状面积增大，空气通过防尘网22的速度减小，边缘部分空气体受到的剪切力减小，从而空气在防尘网22边缘的运动粘度减小，声损减小，进而声音响度增大，也即声音传递的能量增大。
具体地，所述壳体1包括前壳13、后壳(未图示)、自所述前壳13靠近所述防尘网22的一侧向所述防尘网22延伸的侧壁14。其中所述前壳13形成有所述出音口12，所述防尘网22固定于所述前壳13且包括若干网状部221及形成于所述防尘网22靠近所述前壳13一侧的粘接部222。
其中，所述粘接部222包括第一粘接条2221及第二粘接条2222，所述第一粘接条2221围绕所述防尘网22的周圈边缘设置，所述第二粘接条2222用以分隔所述防尘网22以形成若干所述网状部221。由于所述喇叭21与所述收容腔11具有谐振频率点，所述第二粘接条2222的设置使得若干所述网状部221避开所述喇叭21与所述收容腔11的谐振频率点。具体地，在防尘网22的网状部221面积增大的过程中，其谐振频率会呈下降的趋势，通过上述区块化防尘网22的固定方式，控制各个网状部221的结构形状，避开喇叭21与收容腔11的谐振频率点及语音频段，控制防尘网22的模态振型、振幅，从而避免产生异音，有效保证信噪比。
具体地，所述第二粘接条2222呈十字交叉状设置，且所述第二粘接条2222的端部与所述第一粘接条2221相连接；所述第二粘接条2222将所述防尘网22分隔成四个网状部221。当然，在本申请的其他实施例中，所述第二粘接条2222 的形状及所述防尘网22的分隔情况均可根据实际使用需要调整。在本申请的具体实施例中，为了避开所述喇叭21与所述收容腔11的谐振频率点，所述粘接部222将防尘网22分隔成四个面积不同的所述网状部221，即所述第一粘接条2221和所述第二粘贴条2222的交叉点并不位于整个防尘网22的中心点处。当然，在其他实施例中，所述粘接部222的具体设置位置及所述网状部221的划分可根据不同扬声器组件2的具体谐振频率点设置。对应地，所述前壳13靠近所述防尘网22的一侧向所述防尘网22凸伸形成有连接部131，所述连接部131与所述粘接部222对应设置以粘接所述粘接部222。具体地，所述连接部131包括第一连接条1311和第二连接条1312，所述第一粘接条2221与所述第一连接条1311粘接固定，所述第二粘接条2222与所述第二连接条1312粘接固定。在本实施例中，所述网状部221与所述粘接部222一体成型，且所述粘接部222与所述连接部131通过背胶相互粘接固定。具体地，所述连接部131与所述粘接部222对应设置以将所述收容腔11内的所述前壳13分隔成四个出音部132，若干所述出音口12均匀分布于所述出音部132中。通过上述方式，将防尘网22牢固地固定于前壳13上，保证防尘网22的张力，避免由于张力不足导致异音产生的情况，有利于移动终端的轻薄化；另外，所述连接部131的凸伸厚度保证了防尘网22与前壳13的间隔距离，减少了声损。当然，在本申请的其他实施例中，所述粘接部222与所述连接部131也可通过其他方式固定，只要达到将所述粘接部222与所述连接部131连接固定的效果，即可实现本申请的目的。
具体地，在本实施例中，所述出音口12设有4个，且每个出音部132中设有1个出音口12。当然，在其他实施例中，出音口12的数量也可根据实际情况增加或减少。
在本申请中，任一所述网状部221的面积大于对应所述出音部132中所述出音口12的面积。因而当任一出音口12出音时，声音均自防尘网22的网状部221经防尘网22与前壳13之间的间隔空间传播至对应的所述出音口12，从而增强自任一所述出音口12传播的声音的辐射能力。
此外，所述壳体1包括围绕所述侧壁14内侧设置的第一凸缘15，所述第一凸缘15自所述前壳13朝向所述防尘网22的一侧向所述防尘网22凸伸形成；所述喇叭21包括自所述喇叭21周圈边缘靠近所述前壳13的一侧向所述前壳13凸伸形成的第二凸缘211，所述第二凸缘211与所述第一凸缘15固定连接。由此，本申请实现了喇叭21与前壳13的牢固固定。具体地，在本实施例中，所 述第一凸缘15与所述第二凸缘211也通过背胶相互粘接固定。当然，在其他实施例中，所述第一凸缘15与所述第二凸缘211的固定方式也可为其他方式，只要达到将所述喇叭21固定于所述前壳13上即可实现本申请的目的。
进一步地，为了保证喇叭21与防尘网22的间隔距离，所述第一凸缘15的凸伸高度大于所述连接部131的凸伸高度。因而，本申请的扬声器组件2工作时，所述防尘网22与所述喇叭21和前壳13均不会发生碰撞。
需要说明的是，所述连接部131的凸伸高度根据防尘网22最大振幅内与前壳13不发生触碰设计，所述第一凸缘15的凸伸高度根据防尘网22最大振幅内与喇叭21不发生触碰设计。
参阅图4，图4是声学性能测试中本申请移动终端100与现有技术中移动终端的频响曲线对比图，其中，位于上方的实线对应本申请移动终端100，位于下方的实现对应现有技术的移动终端。由图4可知，本申请的移动终端100的响度在中低频和高频均有明显提升，其中在1kHz及3.5kHz处增大了近4dB，且3.5kHz处的相位后移，调频延展有些许提升。因此，本申请的移动终端100可以使用更小的功耗实现同等响度的声音，在保证发声质量的同时，又可以降低能耗。
综上所述，本申请提供的移动终端100采用的防尘网22的网状面积大于出音口12的面积，且防尘网22与壳体1间隔设置，从而声音经防尘网22与壳体1之间的间隔空间传播至出音口12，增加了防尘网22的透气面积，减少了热粘滞效应，因而减少了防尘网22对声音的衰减影响，增加信噪比；并且，本申请的移动终端100通过防尘网22与壳体1的固定设置、防尘网22与喇叭21及壳体1的间隔设置，避免了由于防尘网22震动碰撞壳体1与喇叭21导致异音产生的情况。
应当理解，虽然本说明书按照实施例加以描述，但并非每个实施例仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施例。
上文所列出的一系列的详细说明仅仅是针对本申请的可行性实施例的具体说明，并非用以限制本申请的保护范围，凡未脱离本申请技艺精神所作的等效实施例或变更均应包含在本申请的保护范围之内。

Claims (9)

  1. 一种移动终端，其特征在于，所述移动终端包括：
    壳体，形成有收容腔和出音口；
    扬声器组件，设置于所述收容腔内，由所述出音口出音；所述扬声器组件包括喇叭和防尘网，所述防尘网固定于所述壳体上，且位于所述喇叭和所述壳体之间；所述喇叭包括用于振动发声的振动膜片，所述出音口面积占所述振动膜片有效面积的比例不大于15％；
    其中，所述防尘网的网状面积大于所述出音口的面积，所述防尘网与所述壳体及所述喇叭均间隔设置。
  2. 根据权利要求1所述的移动终端，其特征在于，
    所述壳体包括：
    前壳，形成有出音口，且所述前壳靠近所述防尘网的一侧向所述防尘网凸伸形成有连接部；
    后壳；
    所述防尘网固定于所述前壳，包括：
    若干网状部；
    粘接部，形成于所述防尘网靠近所述前壳的一侧，且包括第一粘接条及第二粘接条，所述第一粘接条围绕所述防尘网的周圈边缘设置，所述第二粘接条用以分隔所述防尘网以形成若干所述网状部，以使若干所述网状部避开所述喇叭与所述收容腔的谐振频率点；
    其中，所述连接部与所述粘接部对应设置以粘接所述粘接部。
  3. 根据权利要求2所述的移动终端，其特征在于，所述第二粘接条呈十字交叉状设置，且所述第二粘接条的端部与所述第一粘接条相连接；所述第二粘接条将所述防尘网分隔成四个所述网状部，所述连接部与所述粘接部对应设置以将所述收容腔内的所述前壳分隔成四个出音部，若干所述出音口均匀分布于所述出音部中。
  4. 根据权利要求3所述的移动终端，其特征在于，任一所述网状部的面积大于对应所述出音部中所述出音口的面积。
  5. 根据权利要求3所述的移动终端，其特征在于，所述出音口设有4个，且每个出音部中设有1个出音口。
  6. 根据权利要求2所述的移动终端，其特征在于，所述网状部与所述粘接 部一体成型，且所述粘接部与所述连接部通过背胶相互粘接固定。
  7. 根据权利要求2所述的移动终端，其特征在于，
    所述壳体还包括：
    侧壁，自所述前壳靠近所述防尘网的一侧向所述防尘网延伸；
    第一凸缘，围绕所述侧壁内侧设置，且自所述前壳朝向所述防尘网的一侧向所述防尘网凸伸形成；
    所述喇叭包括：
    第二凸缘，自所述喇叭周圈边缘靠近所述前壳的一侧向所述前壳凸伸形成；
    其中，所述第二凸缘与所述第一凸缘固定连接。
  8. 根据权利要求7所述的移动终端，其特征在于，所述第一凸缘的凸伸高度大于所述连接部的凸伸高度。
  9. 根据权利要求7所述的移动终端，其特征在于，所述第一凸缘与所述第二凸缘通过背胶相互粘接固定。
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1582058A (zh) * 2003-07-31 2005-02-16 卡西欧计算机株式会社 扬声器安装及防尘结构
WO2008061549A1 (en) * 2006-11-23 2008-05-29 Nokia Corporation Magnetic shield
CN102547497A (zh) * 2010-12-14 2012-07-04 富泰华工业（深圳）有限公司 喇叭孔防尘网及其固定方法与采用其的电子装置
CN108712708A (zh) * 2018-06-19 2018-10-26 深圳市沃特沃德股份有限公司 扬声器组件及智能设备
CN208402110U (zh) * 2018-04-12 2019-01-18 Oppo广东移动通信有限公司 一种电子装置
CN110138940A (zh) * 2019-06-03 2019-08-16 华勤通讯技术有限公司 一种侧面出音的发声模组及移动终端

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1582058A (zh) * 2003-07-31 2005-02-16 卡西欧计算机株式会社 扬声器安装及防尘结构
WO2008061549A1 (en) * 2006-11-23 2008-05-29 Nokia Corporation Magnetic shield
CN102547497A (zh) * 2010-12-14 2012-07-04 富泰华工业（深圳）有限公司 喇叭孔防尘网及其固定方法与采用其的电子装置
CN208402110U (zh) * 2018-04-12 2019-01-18 Oppo广东移动通信有限公司 一种电子装置
CN108712708A (zh) * 2018-06-19 2018-10-26 深圳市沃特沃德股份有限公司 扬声器组件及智能设备
CN110138940A (zh) * 2019-06-03 2019-08-16 华勤通讯技术有限公司 一种侧面出音的发声模组及移动终端

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