WO2020248208A1 - 一种屏幕发声装置 - Google Patents

一种屏幕发声装置 Download PDF

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Publication number
WO2020248208A1
WO2020248208A1 PCT/CN2019/091211 CN2019091211W WO2020248208A1 WO 2020248208 A1 WO2020248208 A1 WO 2020248208A1 CN 2019091211 W CN2019091211 W CN 2019091211W WO 2020248208 A1 WO2020248208 A1 WO 2020248208A1
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WIPO (PCT)
Prior art keywords
electromagnet
screen
drive module
magnetic steel
cover plate
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/CN2019/091211
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English (en)
French (fr)
Inventor
陈召宪
毛路斌
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
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AAC Acoustic Technologies Shenzhen Co Ltd
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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 US16/996,943 priority Critical patent/US20200396545A1/en
Publication of WO2020248208A1 publication Critical patent/WO2020248208A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the invention belongs to the technical field of electro-acoustic conversion, and particularly relates to a screen sounding device.
  • the existing mobile phone sound device adopts piezoelectric and moving coil drive unit solutions.
  • the sound device is installed inside the mobile phone and connects the middle frame (or back cover) of the mobile phone and the mobile phone screen as an integral or distributed device.
  • the piezoelectric driving device requires a relatively large voltage
  • the moving coil driving device has a complicated structure, and the size of the sound device is difficult to be made smaller, and its driving force is limited, and the sound effect is average.
  • the purpose of the present invention is to provide a screen sounding device, which aims to solve the problems of complicated structure and small driving force of the driving unit of the sounding device in the prior art.
  • a screen sound device includes a screen for vibrating sound and a frame for installing the screen. It is characterized in that the screen sound device also includes an electromagnet type driving module for driving the screen to vibrate.
  • the electromagnet drive module includes an electromagnet, a magnetic steel and a spring; the electromagnet includes a magnetic core and a coil wound on the outer periphery of the magnetic core, and the magnetic steel is located outside the electromagnet, And is separated from the outer surface of the electromagnet by a gap; the spring has a first connecting portion, a second connecting portion, and an elastic deformation portion, the elastic deformation portion is connected to the first connecting portion and the second connecting portion
  • the first connecting portion is fixedly connected to the magnetic steel, the second connecting portion is fixedly connected to the electromagnet; the electromagnet is fixed to the frame, and the magnetic steel is fixed to the screen Below.
  • the electromagnet type drive module has a plurality of magnets, and the plurality of magnets are along the
  • the magnet is distributed around the circumference; the electromagnet drive module further includes a connecting cover, the tops of the plurality of magnets are all fixedly connected to the connecting cover, and the connecting cover is fixed under the screen.
  • the electromagnet type driving module further includes a connecting base plate, and the bottoms of the plurality of magnets are all fixedly connected to the connecting base plate.
  • connecting cover plate and the connecting bottom plate are made of magnetically conductive materials.
  • the electromagnet drive module has a ring-shaped magnetic steel, and the ring-shaped magnetic steel surrounds the circumference of the electromagnet.
  • opposite sides of the second connecting portion of the spring are provided with first connecting portions, and both ends of the first connecting portion are fixedly connected to the second connecting portion through the elastic deformation portion.
  • the electromagnet drive module further includes a magnetically permeable cover plate that covers the top surface of the electromagnet, and the bottom surface of the magnetically permeable cover plate is The top surface is bonded; the bottom surface of the second connecting portion of the spring is fixedly connected to the top surface of the magnetic conductive cover.
  • the electromagnet type driving module further includes a magnetically permeable base plate, the magnetically permeable base plate covers the bottom surface of the electromagnet, and the top surface of the magnetically permeable base plate is bonded to the bottom surface of the electromagnet .
  • the screen includes a glass panel and a display screen, the glass panel and the display screen are both installed on the frame, and the glass panel is stacked on the display screen; the length of the display screen is smaller than that of the glass panel
  • the electromagnet drive module is located below the glass panel and staggers the display screen; the electromagnet drive module has one end of the spring close to the glass panel.
  • the magnet is magnetized along the vibration direction of the screen.
  • the present invention has the following beneficial effects:
  • the electromagnet of the driving module can generate a magnetic field after being energized, and the electromagnet interacts with the magnetic steel to drive the magnetic steel to vibrate and drive the screen to vibrate, thereby realizing sound.
  • the magnitude of the driving force can be controlled, so as to provide a greater driving force and obtain a better sound effect.
  • the drive module of the present invention is connected by a spring into an integrated type, with simple structure and easy installation.
  • the entire sound device can be made thinner and the size can be made smaller; and the traditional speaker Compared with the receiver, the diaphragm and other structures are omitted, and the production cost is lower.
  • FIG. 1 is a perspective view of a screen sound emitting device according to Embodiment 1 of the present invention.
  • Fig. 2a is a schematic cross-sectional view of the screen sound emitting device shown in Fig. 1 along the line a-a;
  • Fig. 2b is an enlarged view of area A of the screen sound emitting device shown in Fig. 2a;
  • FIG. 3 is a schematic diagram of an exploded structure of the screen sound emitting device shown in FIG. 1;
  • FIG. 4 is a perspective view of an electromagnet type driving module provided by Embodiment 1 of the present invention.
  • Figure 5 is a schematic cross-sectional view of the electromagnet drive module shown in Figure 4 along the b-b section line;
  • FIG. 6 is a schematic diagram of an exploded structure of the electromagnet drive module shown in FIG. 4;
  • FIG. 7 is an exploded structure diagram of the electromagnet type driving module of the screen sound device according to the second embodiment of the present invention.
  • connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a connection. Electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • a screen sounding device 100 provided in this embodiment includes a screen for vibrating and sounding, a frame for installing the screen 1, 2, an electromagnet drive for driving the screen 1 to vibrate Module 3 and back cover 4.
  • the frame 2 is a length-shaped middle frame with a middle partition 20 in the middle.
  • the middle partition 20 divides the frame 2 into an upper space 21 and a lower space 22 separated from each other.
  • the electromagnet drive module 3 is installed on the central partition 20 of the frame 2 and is located in the upper space 21.
  • the rear cover 4 covers the lower space 22 of the frame 2.
  • the above-mentioned screen 1 includes a glass panel 11 and a display screen 12, and both the glass panel 11 and the display screen 12 are installed on the frame 2.
  • the glass panel 11 is stacked on the display screen 12; the length of the display screen 12 is less than the length of the glass panel 11, and the electromagnet drive module 3 is located under the glass panel 11 and staggered with the display screen 12.
  • the glass panel 11 may be a touch panel or just a general glass panel 11.
  • the above-mentioned electromagnet drive module 3 includes an electromagnet 31, a plurality of magnets 32a and a spring 33; the electromagnet 31 includes a magnetic core 311 and a coil 312 wound on the outer periphery of the magnetic core 311 .
  • a plurality of magnets 32a are distributed around the electromagnet 31 and are separated from the outer side of the electromagnet 31 by a gap.
  • the magnets 32a are magnetized along the vibration direction of the screen 1.
  • the spring 33 of this embodiment is formed by stamping, and the whole is sheet-shaped.
  • the spring 33 has a first connecting portion 331, a second connecting portion 332 and an elastic deformation portion 333.
  • the elastic deformation portion 333 is connected between the first connecting portion 331 and the second connecting portion 332; the first connecting portion 331 is fixedly connected to the magnetic steel 32a, and the second connecting portion 332 is fixedly connected to the electromagnet 31.
  • the electromagnet drive module 3 further includes a connecting cover 34, a connecting base 35, a magnetically conductive cover 36 and a magnetically conductive base 37.
  • the connecting cover 34 is fixed under the glass panel 11, the tops of all the magnets 32a are fixedly connected to the bottom surface of the connecting cover 34, and the bottoms of all the magnets 32a are fixedly connected to the top surface of the connecting bottom plate 35 through the connecting cover 34 With the connection base plate 35, all the magnets 32a can be connected as a whole.
  • the above-mentioned connecting cover plate 34 and the connecting bottom plate 35 are made of magnetically conductive materials. Therefore, the connecting cover plate 34 and the connecting bottom plate 35 also have magnetism under the influence of the magnetic steel 32a, so that the electromagnet 31 A magnetic circuit is formed around the, making the force of the magnetic steel 32a on the electromagnet 31 more uniform and comprehensive.
  • the second connecting portion 332 of the spring 33 is provided with a first connecting portion 331 on opposite sides, and both ends of the first connecting portion 331 pass The elastic deformation portion 333 is fixedly connected to the second connecting portion 332.
  • the magnetically conductive cover plate 36 covers the top surface of the electromagnet 31, and the bottom surface of the magnetically conductive cover plate 36 is bonded to the top surface of the electromagnet 31; the bottom surface of the second connecting portion 332 of the spring 33 and the magnetically conductive cover plate 36 The top surface is fixedly connected.
  • the magnetic base plate 37 is covered on the bottom surface of the electromagnet 31, and the top surface of the magnetic base plate 37 is bonded to the bottom surface of the electromagnet 31.
  • the magnetic core 311 and the coil 312 can be connected into an integral electromagnet 31 through the magnetic cover 36 and the magnetic base 37, and the magnetism on the electromagnet 31 can be guided to the magnetic cover 36 and the magnetic base 37 Above, making the magnetic field intensity distribution more uniform.
  • the above-mentioned electromagnet drive module 3 is sandwiched between the central partition 20 of the frame 2 and the glass panel 11 as an integral component, wherein the electromagnet 31, the magnetic conductive cover plate 36 and the magnetic conductive bottom plate 37 are fixed to the frame 2 Above, the magnetic steel 32a, the connecting cover plate 34 and the connecting bottom plate 35 connected to the magnetic steel 32a are all fixed under the glass panel 11.
  • the electromagnet 31 of the electromagnet drive module 3 can generate a magnetic field after being energized.
  • the electromagnet 31 interacts with the magnet 32a to drive the magnet 32a to vibrate and drive the screen 1 to vibrate, thereby achieving Sound.
  • the magnitude of the driving force can be controlled, so as to provide a greater driving force and obtain a better sound effect.
  • the electromagnet drive module 3 of this embodiment is connected by a spring 33 to become an integral type, with a simple structure and easy installation.
  • the entire sound generating device 100 can be made very thin and the size can be Made smaller; Compared with traditional speakers and receivers, the diaphragm and other structures are omitted, and the production cost is lower.
  • the difference between this embodiment and the first embodiment is that the electromagnet drive module 3 of the screen sound device of this embodiment uses a ring-shaped magnet 32b, which surrounds the electromagnet 31 All around.
  • the ring-shaped magnetic steel 32b can generate a more uniform magnetic field.
  • the connecting cover plate 34 and the connecting bottom plate 35 for connecting multiple magnets can also be omitted.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

一种屏幕发声装置（100），包括屏幕（1）、框架（2）以及电磁铁式驱动模组（3），该电磁铁式驱动模组（3）用于驱动屏幕（1）振动发声。该电磁铁式驱动模组（3）包括电磁铁（31）、磁钢（32a）以及弹簧（33）。电磁铁（31）包括磁芯（311）以及绕置于磁芯（311）外周缘上的线圈（312）。电磁铁（31）通电后与磁钢（32a）相互作用，驱动磁钢（32a）发生振动而带动屏幕（1）振动，从而实现发声。通过改变流入线圈（312）的电流大小，可控制驱动力的大小，从而能够提供更大的驱动力，获得更佳发声效果，并且，上述驱动模组结构简单、安装简便。由于屏幕（1）振动的幅度较小，所以发声装置（100）能做得很薄；和传统扬声器、受话器相比，省去了振膜等结构，制作成本更低。

Description

一种屏幕发声装置 技术领域
本发明属于电声转换技术领域，尤其涉及一种屏幕发声装置。
 背景技术
随着科技的快速发展，各种具有发音功能的电子设备也越来越多，而电子设备的发音功能则是通过发声装置来实现。很多电子设备具有多种功能，如视频播放、音乐播放、导航提示等，为了便于掌控与携带，电子设备的趋势是往精细化发展，但是，发声装置中的电子元器件越多，其可靠性就越差。
例如，现有手机的发声装置采用的驱动单元方案有压电式以及动圈式，发声装置于手机整机内部，作为整体器件或分布式器件连接手机中框（或后盖）和手机屏幕。然而，采用压电式驱动装置需要较大电压，而动圈式驱动器件其结构复杂，发声装置的尺寸难以做得更小，并且其驱动力有限，发声效果一般。
 技术问题
本发明的目的在于提供一种屏幕发声装置，旨在解决现有技术中的发声装置的驱动单元结构复杂以及驱动力较小的问题。
 技术解决方案
本发明是这样实现的，一种屏幕发声装置，包括用于振动发声的屏幕以及用于安装屏幕的框架，其特征在于，所述屏幕发声装置还包括用于驱动屏幕振动的电磁铁式驱动模组，所述电磁铁式驱动模组包括电磁铁、磁钢以及弹簧；所述电磁铁包括磁芯以及绕置于磁芯外周缘上的线圈，所述磁钢位于所述电磁铁的外侧，并与所述电磁铁的外侧面相隔一段间隙；所述弹簧具有第一连接部、第二连接部以及弹性形变部，所述弹性形变部连接于所述第一连接部与第二连接部之间；所述第一连接部与所述磁钢固定连接，所述第二连接部与所述电磁铁固定连接；所述电磁铁固定在所述框架上，所述磁钢固定在所述屏幕下方。
进一步的，所述电磁铁式驱动模组具有多块磁钢，所述多块磁钢沿所述电
磁铁的四周分布；所述电磁铁式驱动模组还包括连接盖板，所述多块磁钢的顶部均与所述连接盖板固定连接，所述连接盖板固定在所述屏幕下方。
进一步的，所述电磁铁式驱动模组还包括连接底板，所述多块磁钢的底部均与所述连接底板固定连接。
进一步的，所述连接盖板、连接底板均由导磁材料制作而成。
进一步的，所述电磁铁式驱动模组具有一块环状磁钢，所述环状磁钢围绕所述电磁铁的四周。
进一步的，所述弹簧的第二连接部的相对两侧均设置有第一连接部，所述第一连接部的两端均通过所述弹性形变部与所述第二连接部固定连接。
进一步的，所述电磁铁式驱动模组还包括导磁盖板，所述导磁盖板盖罩于所述电磁铁的顶面上，所述导磁盖板的底面与所述电磁铁的顶面粘接；所述弹簧的第二连接部的底面与所述导磁盖板的顶面固定连接。
进一步的，所述电磁铁式驱动模组还包括导磁底板，所述导磁底板盖罩于所述电磁铁的底面上，所述导磁底板的顶面与所述电磁铁的底面粘接。
进一步的，所述屏幕包括玻璃面板以及显示屏，所述玻璃面板以及显示屏均安装在所述框架上，所述玻璃面板叠置于所述显示屏上；所述显示屏的长度小于玻璃面板的长度，所述电磁铁式驱动模组位于所述玻璃面板下方，并错开所述显示屏；所述电磁铁式驱动模组具有弹簧的一端贴近所述玻璃面板。
进一步的，所述磁钢沿屏幕的振动方向充磁。
 有益效果
本发明与现有技术相比，有益效果在于：
本发明的发声装置，其驱动模组的电磁铁通电后能产生磁场，电磁铁与磁钢相互作用，驱动磁钢发生振动而带动屏幕振动，从而实现发声。通过改变流入线圈的电流大小，可控制驱动力的大小，从而能够提供更大的驱动力，获得更佳发声效果。并且，本发明的驱动模组通过弹簧连接成为一体式，结构简单、安装简便，同时由于屏幕振动的幅度较小，所以整个发声装置能做得很薄，尺寸能做得更小；和传统扬声器、受话器相比，省去了振膜等结构，制作成本更低。
 附图说明
图1是本发明实施例一提供的一种屏幕发声装置的立体图；
图2a是图1所示屏幕发声装置沿a-a剖线的剖视示意图；
图2b是图2a所示的屏幕发声装置A区域的放大图；
图3是图1所示屏幕发声装置的分解结构示意图；
图4是本发明实施例一提供的电磁铁式驱动模组的立体图；
图5是图4所示电磁铁式驱动模组沿b-b剖线的剖视示意图；
图6是图4所示电磁铁式驱动模组的分解结构示意图；
图7是本发明实施例二提供的屏幕发声装置的电磁铁式驱动模组的分解结构示意图。
 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。
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制；术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性；此外，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
实施例一：
请参见图1至图3，为本实施例提供的一种屏幕发声装置100，包括用于振动发声的屏幕1、用于安装屏幕1的框架2、用于驱动屏幕1振动的电磁铁式驱动模组3以及后盖4。
上述框架2为一长度形的中框，其中间具有中隔板20，该中隔板20将框架2划分为上下两个隔开的上空间21以及下空间22。电磁铁式驱动模组3安装于框架2的中隔板20上，并且位于上空间21内。上述后盖4盖罩框架2的下空间22。
上述屏幕1包括玻璃面板11以及显示屏12，玻璃面板11以及显示屏12均安装在框架2上。玻璃面板11叠置于显示屏12上；显示屏12的长度小于玻璃面板11的长度，电磁铁式驱动模组3位于玻璃面板11下方，并错开显示屏12。在实际应用中，玻璃面板11可以是触控面板，也可以仅是一般的玻璃面板11。
请参见图4至图6，上述电磁铁式驱动模组3包括电磁铁31、多块磁钢32a以及弹簧33；电磁铁31包括磁芯311以及绕置于磁芯311外周缘上的线圈312。
多块磁钢32a沿电磁铁31的四周分布，并与电磁铁31的外侧面相隔一段间隙，于本实施例中，磁钢32a沿屏幕1的振动方向充磁。
本实施例的弹簧33通过冲压成形，整体呈片状。弹簧33具有第一连接部331、第二连接部332以及弹性形变部333。弹性形变部333连接于第一连接部331与第二连接部332之间；第一连接部331与磁钢32a固定连接，第二连接部332与电磁铁31固定连接。
进一步的，电磁铁式驱动模组3还包括连接盖板34、连接底板35、导磁盖板36以及导磁底板37。
连接盖板34固定在玻璃面板11下方，所有磁钢32a的顶部均与连接盖板34的底面固定连接，所有磁钢32a的底部均与连接底板35的顶面固定连接，通过连接盖板34与连接底板35，可以将所有磁钢32a连接成与一整体。优选的，上述连接盖板34、连接底板35均由导磁材料制作而成，所以，连接盖板34、连接底板35在磁钢32a的影响下，也具有磁性，从而，可在电磁铁31的四周形成了磁回路，使得磁钢32a对电磁铁31的作用力更均匀、更全面。
为了使弹簧33能与分布于电磁铁31两外侧的磁钢32a连接，弹簧33的第二连接部332的相对两侧均设置有第一连接部331，第一连接部331的两端均通过弹性形变部333与第二连接部332固定连接。
导磁盖板36盖罩于电磁铁31的顶面上，导磁盖板36的底面与电磁铁31的顶面粘接；弹簧33的第二连接部332的底面与导磁盖板36的顶面固定连接。导磁底板37盖罩于电磁铁31的底面上，导磁底板37的顶面与电磁铁31的底面粘接。通过导磁盖板36、导磁底板37能将磁芯311与线圈312连接成一个整体的电磁铁31，并且，能将电磁铁31上的磁性引导到导磁盖板36以及导磁底板37上，使得磁场强度分布更均匀。
上述电磁铁式驱动模组3作为一个整体元器件夹置于框架2的中隔板20与玻璃面板11之间，其中，电磁铁31、导磁盖板36以及导磁底板37固定在框架2上，磁钢32a以及与磁钢32a连接的连接盖板34、连接底板35均固定在玻璃面板11下方。
本实施例的发声装置100，其电磁铁式驱动模组3的电磁铁31通电后能产生磁场，电磁铁31与磁钢32a相互作用，驱动磁钢32a发生振动而带动屏幕1振动，从而实现发声。通过改变流入线圈312的电流大小，可控制驱动力的大小，从而能够提供更大的驱动力，获得更佳发声效果。并且，本实施例的电磁铁式驱动模组3通过弹簧33连接成为一体式，结构简单、安装简便，同时由于屏幕1振动的幅度较小，所以整个发声装置100能做得很薄，尺寸能做得更小；和传统扬声器、受话器相比，省去了振膜等结构，制作成本更低。
实施例二：
请参见图7，本实施例与实施例一不同的是，本实施例的屏幕发声装置的电磁铁式驱动模组3采用一块环状磁钢32b，该环状磁钢32b围绕电磁铁31的四周。本实施例采用环状磁钢32b能产生强度更均匀的磁场。必要时，还可以省去用于连接多块磁钢的连接盖板34以及连接底板35。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种屏幕发声装置，包括用于振动发声的屏幕以及用于安装屏幕的框架，其特征在于，所述屏幕发声装置还包括用于驱动屏幕振动的电磁铁式驱动模组，所述电磁铁式驱动模组包括电磁铁、磁钢以及弹簧；所述电磁铁包括磁芯以及绕置于磁芯外周缘上的线圈，所述磁钢位于所述电磁铁的外侧，并与所述电磁铁的外侧面相隔一段间隙；所述弹簧具有第一连接部、第二连接部以及弹性形变部，所述弹性形变部连接于所述第一连接部与第二连接部之间；所述第一连接部与所述磁钢固定连接，所述第二连接部与所述电磁铁固定连接；所述电磁铁固定在所述框架上，所述磁钢固定在所述屏幕下方。
  2. 如权利要求1所述的屏幕发声装置，其特征在于，所述电磁铁式驱动模组具有多块磁钢，所述多块磁钢沿所述电磁铁的四周分布；所述电磁铁式驱动模组还包括连接盖板，所述多块磁钢的顶部均与所述连接盖板固定连接，所述连接盖板固定在所述屏幕下方。
  3. 如权利要求2所述的屏幕发声装置，其特征在于，所述电磁铁式驱动模组还包括连接底板，所述多块磁钢的底部均与所述连接底板固定连接。
  4. 如权利要求3所述的屏幕发声装置，其特征在于，所述连接盖板、连接底板均由导磁材料制作而成。
  5. 如权利要求1所述的屏幕发声装置，其特征在于，所述电磁铁式驱动模组具有一块环状磁钢，所述环状磁钢围绕所述电磁铁的四周。
  6. 如权利要求1所述的屏幕发声装置，其特征在于，所述弹簧的第二连接部的相对两侧均设置有第一连接部，所述第一连接部的两端均通过所述弹性形变部与所述第二连接部固定连接。
  7. 如权利要求1至6中任意一项所述的屏幕发声装置，其特征在于，所述电磁铁式驱动模组还包括导磁盖板，所述导磁盖板盖罩于所述电磁铁的顶面上，所述导磁盖板的底面与所述电磁铁的顶面粘接；所述弹簧的第二连接部的底面与所述导磁盖板的顶面固定连接。
  8. 如权利要求7所述的屏幕发声装置，其特征在于，所述电磁铁式驱动模组还包括导磁底板，所述导磁底板设置于所述电磁铁的底面上，所述导磁底板的顶面与所述电磁铁的底面粘接。
  9. 如权利要求1至6中任意一项所述的屏幕发声装置，其特征在于，所述屏幕包括玻璃面板以及显示屏，所述玻璃面板以及显示屏均安装在所述框架上，所述玻璃面板叠置于所述显示屏上；所述显示屏的长度小于玻璃面板的长度，所述电磁铁式驱动模组位于所述玻璃面板下方，并错开所述显示屏；所述电磁铁式驱动模组具有弹簧的一端贴近所述玻璃面板。
  10. 如权利要求1至6中任意一项所述的屏幕发声装置，其特征在于，所述磁钢沿屏幕的振动方向充磁。
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