WO2021000121A1 - 驱动器及移动终端 - Google Patents

驱动器及移动终端 Download PDF

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Publication number
WO2021000121A1
WO2021000121A1 PCT/CN2019/094019 CN2019094019W WO2021000121A1 WO 2021000121 A1 WO2021000121 A1 WO 2021000121A1 CN 2019094019 W CN2019094019 W CN 2019094019W WO 2021000121 A1 WO2021000121 A1 WO 2021000121A1
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WO
WIPO (PCT)
Prior art keywords
coil
strain gauge
driver
screen
surrounding wall
Prior art date
Application number
PCT/CN2019/094019
Other languages
English (en)
French (fr)
Inventor
王尧
汤赟
马杰
崔志勇
刘柯佳
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技（南京）有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 瑞声声学科技(深圳)有限公司, 瑞声科技（南京）有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Priority to PCT/CN2019/094019 priority Critical patent/WO2021000121A1/zh
Priority to CN201921024511.1U priority patent/CN209982723U/zh
Publication of WO2021000121A1 publication Critical patent/WO2021000121A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • 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
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N35/00—Magnetostrictive devices

Definitions

  • the utility model relates to the field of electro-acoustic conversion, in particular to a driver and a portable mobile terminal.
  • a related art mobile terminal includes a housing, a screen that is covered on the housing and encloses a housing space with the housing, and an exciter installed in the housing space to drive the screen to vibrate and produce sound.
  • the exciter includes a mover assembly and a stator assembly part, etc., and the structure is relatively complicated, and the assembly is complicated, which increases the production cost.
  • the purpose of the utility model is to provide a driver and mobile terminal with simple structure, easy assembly and low production cost.
  • the present invention provides a driver, which includes a bracket, a coil wound on the outside of the bracket, an iron core fixed on the inner side of the bracket, and a magnetic actuator that is stacked and fixed on the iron core.
  • a stretchable strain gauge the coil is energized to make the magnetostrictive strain gauge stretch and deform along the axial direction of the coil.
  • the support includes a bottom plate and a surrounding wall protruding from the bottom plate, the cross section of the surrounding wall is a hollow ring shape, the surrounding wall and the bottom plate enclose a containing space, and the coil is wound On the outer side of the surrounding wall, the iron core is located in the containing space and fixed to the bottom plate, and the magnetostrictive strain gauge is at least partially exposed in the containing space.
  • the iron core is fixedly connected to the surrounding wall
  • the magnetostrictive strain gauge is fixedly connected to the surrounding wall
  • the cross section of the surrounding wall is circular.
  • the utility model also provides a mobile terminal, which includes a housing, a screen that is covered on the housing and encloses a containing space with the housing, and a screen arranged in the containing space as provided by the utility model
  • a mobile terminal which includes a housing, a screen that is covered on the housing and encloses a containing space with the housing, and a screen arranged in the containing space as provided by the utility model
  • the bracket is fixed to the housing and spaced from the screen, the magnetostrictive strain gauge is fixedly connected to the screen, and the coil is energized so that the magnetostrictive strain gauge is along the The axial direction of the coil is stretched and deformed to drive the screen to vibrate and produce sound.
  • the driver includes at least two, and the two drivers are symmetrically distributed about the short axis of the screen.
  • the coil is wound on the outside of the bracket, the iron core and the magnetostrictive strain gauge are respectively fixed on the inside of the bracket, and the coil is energized
  • the magnetic field formed by the iron core is changed, so that the axial size of the magnetostrictive strain gage responds quickly to the change of the magnetic field, and the telescopic deformation occurs.
  • the magnetostrictive strain gage drives the screen and the housing to vibrate and produce sound through expansion and contraction.
  • Figure 1 is a schematic diagram of the three-dimensional structure of the driver of the present invention.
  • Figure 2 is an exploded view of the driver of the utility model
  • Figure 3 is a cross-sectional view taken along line A-A in Figure 1;
  • Figure 4 is a schematic diagram of the three-dimensional structure of the mobile terminal of the present invention.
  • Figure 5 is a sectional view taken along line B-B in Figure 4.
  • Fig. 6 is an enlarged view of the part C in Fig. 5.
  • the present invention provides a driver 100, which includes a bracket 1, a coil 2, an iron core 3, and a magnetostrictive strain gauge 4.
  • the coil 2 is wound on the outside of the support 1, the iron core 3 is fixed on the inside of the support 1, and the magnetostrictive strain gauge 4 is stacked and fixed on the iron core 3.
  • the coil 2 is energized so that the magnetostrictive strain gage 4 undergoes expansion and contraction along the axial direction of the coil 2.
  • the bracket 1 includes a bottom plate 11 and a surrounding wall 12 protruding from the bottom plate 11, and the surrounding wall 12 and the bottom plate 11 enclose a receiving space 10.
  • the cross section of the surrounding wall 12 is in a hollow ring shape, for example, in a circular ring shape.
  • the coil 2 is wound around the outer wall 12, and the iron core 3 is located in the containing space 10 and fixed to the bottom plate 11.
  • the magnetostrictive strain gage 4 will stretch and deform in the axial direction, it is more preferable that when it is used, the magnetostrictive strain gage 4 is at least partially exposed in the accommodation space 10 to directly drive other Vibration of components.
  • the iron core 3 is fixedly connected to the surrounding wall 12; the magnetostrictive strain gauge 4 is not only stacked on The iron core 3 forms a fixed exterior, and the magnetostrictive strain gauge 4 is fixedly connected to the surrounding wall 12.
  • the driving structure of the related art avoids the use of the stator and the mover structure and the assembly relationship, thereby simplifying the overall structure, making the driver 100 easy to assemble, and reducing assembly production costs.
  • the present invention also provides a mobile terminal 200, which includes a housing 20, a screen 21, and the driver 100.
  • the screen 21 covers the housing 20 and encloses a receiving space 30 together with the housing 20.
  • the driver 100 is disposed in the receiving space 30.
  • bracket 1 is fixed to the housing 20 and is spaced apart from the screen 21 to reserve a vibration space for the screen 21 to vibrate.
  • the magnetostrictive strain gauge 4 is fixedly connected to the screen 21, and the coil 2 is energized so that the magnetostrictive strain gauge 4 stretches and deforms along the axial direction of the coil 2, that is, the size along the axial direction changes , So as to drive the screen 21 to vibrate and sound.
  • the driver 100 directly drives the screen 21 to vibrate and produce sound through the deformation of the magnetostrictive strain gage 4, the use of the combination of the stator and the mover in the related art is avoided, thereby simplifying the overall structure. It is easier to install and effectively reduces assembly and production costs.
  • the driver 100 includes at least two, and the two drivers 100 are symmetrically distributed about the short axis of the screen 21, so that the overall vibration and sound effect of the screen 21 is better.
  • the number of the drivers 100 is not limited to this, and it can be one or more, which can be configured according to the performance of vibration and sound.
  • the coil is wound on the outside of the bracket, the iron core and the magnetostrictive strain gauge are respectively fixed on the inside of the bracket, and the coil is energized
  • the magnetic field formed by the iron core is changed, so that the axial size of the magnetostrictive strain gage responds quickly to the change of the magnetic field, and the telescopic deformation occurs.
  • the magnetostrictive strain gage drives the screen and the housing to vibrate and produce sound through expansion and contraction.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

本实用新型提供了一种驱动器，其包括支架、绕设于所述支架外侧的线圈、固定于所述支架内侧的铁芯以及叠设固定于所述铁芯上的磁致伸缩应变片，所述线圈通电使得所述磁致伸缩应变片沿所述线圈的轴向发生伸缩形变。本实用新型还提供了一种运用所述驱动器的移动终端，与相关技术相比，本实用新型的驱动器及移动终端结构简单，易于生产装配，降低了装配生产成本。

Description

驱动器及移动终端 技术领域
本实用新型涉及电声转换领域，尤其涉及一种驱动器及便携式的移动终端。
 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。目前，手机的功能极其多样，其中之一便是高品质的音乐功能，而随着人们对手机屏幕操作空间及声学性能的更高要求，通过屏幕发声结构的手机成为趋势。
相关技术的移动终端包括壳体、盖设于所述壳体并与所述壳体共同围成收容空间的屏幕以及安装于所述收容空间内用以驱动所述屏幕振动发声的激励器。
然而，相关技术的移动终端中，所述激励器包括动子组件和定子组件部分等，结构相对较为复杂，而且组装繁琐导致提高了生产成本。
因此，实有必要提供一种新的移动终端解决上述技术问题。
 技术问题
本实用新型的目的在于提供一种结构简单，易于组装，生产成本低的驱动器及移动终端。
 技术解决方案
为了达到上述目的，本实用新型提供了一种驱动器，其包括支架、绕设于所述支架外侧的线圈、固定于所述支架内侧的铁芯以及叠设固定于所述铁芯上的磁致伸缩应变片，所述线圈通电使得所述磁致伸缩应变片沿所述线圈的轴向发生伸缩形变。
优选的，所述支架包括底板和由所述底板凸出延伸的围壁，所述围壁的横截面呈中空环状，所述围壁与所述底板围成容纳空间，所述线圈绕设于所述围壁的外侧，所述铁芯位于所述容纳空间内并固定于所述底板，所述磁致伸缩应变片至少部分外露于所述容纳空间。
优选的，所述铁芯与所述围壁固定连接，所述磁致伸缩应变片与所述围壁固定连接。
优选的，所述围壁的横截面呈圆环形。
本实用新型还提供了一种移动终端，其包括壳体、盖设于所述壳体并与所述壳体共同围成收容空间的屏幕以及设置于所述收容空间内的如本实用新型提供的上述驱动器；所述支架固定于所述壳体且与所述屏幕间隔设置，所述磁致伸缩应变片与所述屏幕固定连接，所述线圈通电使得所述磁致伸缩应变片沿所述线圈的轴向发生伸缩形变，以驱动所述屏幕振动发声。
优选的，所述驱动器至少包括两个，两个所述驱动器关于所述屏幕的短轴对称分布。
 有益效果
与相关技术相比，本实用新型的驱动器和运用该驱动器的移动终端中，将线圈绕设于支架外侧，将铁芯和磁致伸缩应变片分别固定于所述支架内侧，所述线圈通电后使所述铁芯形成的磁场发生变化，从而使得所述磁致伸缩应变片的轴向尺寸随磁场的变化而快速响应，发生伸缩形变，当所述驱动器分别与所述屏幕及所述壳体连接后，所述磁致伸缩应变片通过伸缩形变以驱动所述屏幕和所述壳体进行振动发声。上述驱动器的结构简单，运用到移动终端时组装简单方便，降低了生产成本。
 附图说明
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本实用新型驱动器的立体结构示意图；
图2为本实用新型驱动器的结构分解图；
图3为沿图1中A-A线的剖示图；
图4为本实用新型移动终端的立体结构示意图；
图5为沿图4中B-B线的剖示图；
图6为图5中C所述部分的放大图。
 本发明的实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本实用新型保护的范围。
请同时参阅图1-3，本实用新型提供了一种驱动器100，其包括支架1、线圈2、铁芯3以及磁致伸缩应变片4。所述线圈2绕设于所述支架1外侧，所述铁芯3固定于所述支架1内侧，所述磁致伸缩应变片4叠设固定于所述铁芯3上。所述线圈2通电使得所述磁致伸缩应变片4沿所述线圈2的轴向发生伸缩形变。
具体的，所述支架1包括底板11和由所述底板11凸出延伸的围壁12，所述围壁12与所述底板11围成容纳空间10。
本实施方式中，所述围壁12的横截面呈中空环状，比如，呈圆环形等。
所述线圈2绕设于所述围壁12的外侧，所述铁芯3位于所述容纳空间10内并固定于所述底板11。
因所述磁致伸缩应变片4会沿轴向产生伸缩形变，因此，更优的，当其运用时，所述磁致伸缩应变片4至少部分外露于所述容纳空间10，以直接驱动其它部件振动。
为了增加所述驱动器100的稳定性，所述铁芯3除了固定于所述底板11外，所述铁芯3与所述围壁12固定连接；所述磁致伸缩应变片4除叠设于所述铁芯3形成固定外，所述磁致伸缩应变片4与所述围壁12固定连接。
上述结构中，较相关技术的驱动结构避免了使用定子与动子结构及装配关系，从而简化的整体结构，使得所述驱动器100易于装配，降低组装生产成本。
请结合图3-6所示，本实用新型还提供了一种移动终端200，其包括壳体20、屏幕21和所述驱动器100。
所述屏幕21盖设于所述壳体20并与所述壳体20共同围成收容空间30。所述驱动器100设置于所述收容空间30内。
具体的，所述支架1固定于所述壳体20且与所述屏幕21间隔设置，为所述屏幕21振动预留振动空间。
所述磁致伸缩应变片4与所述屏幕21固定连接，所述线圈2通电使得所述磁致伸缩应变片4沿所述线圈2的轴向发生伸缩形变，即沿轴向的尺寸发生变化，从而用以驱动所述屏幕21振动发声。
上述结构中，因所述驱动器100直接通过磁致伸缩应变片4的形变而驱动所述屏幕21振动发声，避免了使用相关技术中的定子与动子配合的结合，从而使得所整体结构简化，更易于安装，有效低了装配生产成本。
本实施方式中，所述驱动器100至少包括两个，两个所述驱动器100关于所述屏幕21的短轴对称分布，从而使得所述屏幕21的整体振动发声效果更优。当然，所述驱动器100的数量并不限于此，可以为一个或多个，根据振动发声的性能需要配置即可。
与相关技术相比，本实用新型的驱动器和运用该驱动器的移动终端中，将线圈绕设于支架外侧，将铁芯和磁致伸缩应变片分别固定于所述支架内侧，所述线圈通电后使所述铁芯形成的磁场发生变化，从而使得所述磁致伸缩应变片的轴向尺寸随磁场的变化而快速响应，发生伸缩形变，当所述驱动器分别与所述屏幕及所述壳体连接后，所述磁致伸缩应变片通过伸缩形变以驱动所述屏幕和所述壳体进行振动发声。上述驱动器的结构简单，运用到移动终端时组装简单方便，降低了生产成本。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (6)

  1. 一种驱动器，其特征在于，所述驱动器包括支架、绕设于所述支架外侧的线圈、固定于所述支架内侧的铁芯以及叠设固定于所述铁芯上的磁致伸缩应变片，所述线圈通电使得所述磁致伸缩应变片沿所述线圈的轴向发生伸缩形变。
  2. 根据权利要求1所述的驱动器，其特征在于，所述支架包括底板和由所述底板凸出延伸的围壁，所述围壁的横截面呈中空环状，所述围壁与所述底板围成容纳空间，所述线圈绕设于所述围壁的外侧，所述铁芯位于所述容纳空间内并固定于所述底板，所述磁致伸缩应变片至少部分外露于所述容纳空间。
  3. 根据权利要求2所述的驱动器，其特征在于，所述铁芯与所述围壁固定连接，所述磁致伸缩应变片与所述围壁固定连接。
  4. 根据权利要求2所述的驱动器，其特征在于，所述围壁的横截面呈圆环形。
  5. 一种移动终端，其特征在于，其包括壳体、盖设于所述壳体并与所述壳体共同围成收容空间的屏幕以及设置于所述收容空间内的如权利要求1-4任意一项所述的驱动器；所述支架固定于所述壳体且与所述屏幕间隔设置，所述磁致伸缩应变片与所述屏幕固定连接，所述线圈通电使得所述磁致伸缩应变片沿所述线圈的轴向发生伸缩形变，以驱动所述屏幕振动发声。
  6. 根据权利要求5所述的移动终端，其特征在于，所述驱动器至少包括两个，两个所述驱动器关于所述屏幕的短轴对称分布。
PCT/CN2019/094019 2019-06-29 2019-06-29 驱动器及移动终端 WO2021000121A1 (zh)

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CN114627752B (zh) * 2020-12-11 2024-01-26 京东方科技集团股份有限公司 显示面板及其显示装置
WO2022193934A1 (zh) * 2021-03-18 2022-09-22 海信视像科技股份有限公司 一种显示装置、激励器及音频信号播放方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006302937A (ja) * 2005-04-15 2006-11-02 Yokohama Tlo Co Ltd 磁歪素子アクチュエータ
CN201438757U (zh) * 2009-05-25 2010-04-14 东莞思威特电子有限公司 一种具有振动发声功能的换能器
CN102739176A (zh) * 2011-04-15 2012-10-17 快捷半导体(苏州)有限公司 放大器串扰抵消方法和放大器电路
CN208571882U (zh) * 2018-07-12 2019-03-01 深圳市歌尔泰克科技有限公司 电磁激励器以及屏幕发声装置
CN109495832A (zh) * 2018-11-27 2019-03-19 歌尔股份有限公司 表面发声装置以及电子设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006302937A (ja) * 2005-04-15 2006-11-02 Yokohama Tlo Co Ltd 磁歪素子アクチュエータ
CN201438757U (zh) * 2009-05-25 2010-04-14 东莞思威特电子有限公司 一种具有振动发声功能的换能器
CN102739176A (zh) * 2011-04-15 2012-10-17 快捷半导体(苏州)有限公司 放大器串扰抵消方法和放大器电路
CN208571882U (zh) * 2018-07-12 2019-03-01 深圳市歌尔泰克科技有限公司 电磁激励器以及屏幕发声装置
CN109495832A (zh) * 2018-11-27 2019-03-19 歌尔股份有限公司 表面发声装置以及电子设备

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