WO2022062125A1 - 移动终端 - Google Patents

移动终端 Download PDF

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Publication number
WO2022062125A1
WO2022062125A1 PCT/CN2020/128805 CN2020128805W WO2022062125A1 WO 2022062125 A1 WO2022062125 A1 WO 2022062125A1 CN 2020128805 W CN2020128805 W CN 2020128805W WO 2022062125 A1 WO2022062125 A1 WO 2022062125A1
Authority
WO
WIPO (PCT)
Prior art keywords
exciter
vibration
back cover
mobile terminal
fixed wall
Prior art date
Application number
PCT/CN2020/128805
Other languages
English (en)
French (fr)
Inventor
王尧
刘柯佳
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声光电科技(常州)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 瑞声声学科技(深圳)有限公司, 瑞声光电科技(常州)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022062125A1 publication Critical patent/WO2022062125A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0279—Improving the user comfort or ergonomics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • H04M1/035—Improving the acoustic characteristics by means of constructional features of the housing, e.g. ribs, walls, resonating chambers or cavities
    • 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
    • H04R9/063—Loudspeakers using a plurality of acoustic drivers
    • 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

Definitions

  • the invention relates to the field of electro-acoustic conversion, in particular to a mobile terminal.
  • a related art mobile terminal includes a casing, a screen covered on the casing and enclosing an accommodation space, and an exciter installed in the accommodation space and abutting against the screen, and the screen is driven by the exciter vibrating. Vibrate sound.
  • the mobile terminal in the related art drives the screen to vibrate and emit sound by vibrating an exciter, and the screen vibration causes the casing connected to the screen to follow the vibration. Vibration will be felt, which will make the user experience bad.
  • the purpose of the present invention is to provide a mobile terminal with small casing vibration and good user experience.
  • the present invention provides a mobile terminal, which includes a middle frame, a screen and a back cover that are respectively covered on opposite sides of the middle frame and jointly enclose a receiving space, and a back cover is directed from the middle frame to the receiving space.
  • a fixed wall extending in the space, a first exciter fixed on the side of the fixed wall close to the screen, and a piezoelectric sheet and a second exciter respectively installed in the receiving space
  • the first exciter drives
  • the screen vibrates and sounds
  • the piezoelectric sheet is fixed on the back cover to sense the vibration of the back cover and generate a voltage signal
  • the second exciter is fixed on a side of the fixed wall close to the back cover.
  • the second exciter generates reverse vibration according to the voltage signal, and the reverse vibration drives the fixed wall to vibrate in the same direction as the first exciter drives the
  • the vibration directions of the fixed wall vibrations are opposite and equal in magnitude, so that the back cover is stationary.
  • the first exciter is in contact with the screen.
  • the orthographic projection of the first exciter to the back cover along the vibration direction of the screen at least partially overlaps the orthographic projection of the second exciter to the back cover along the vibration direction.
  • the orthographic projection of the first exciter to the back cover along the vibration direction completely falls within the range of the orthographic projection of the second exciter to the back cover along the vibration direction.
  • the orthographic projection of the first exciter to the back cover along the vibration direction and the orthographic projection of the piezoelectric sheet to the back cover along the vibration direction are spaced apart from each other.
  • the piezoelectric sheet is located at the center of the back cover.
  • the mobile terminal further includes a processor installed in the receiving space, the processor is electrically connected to the piezoelectric sheet and the second exciter, respectively, to receive and analyze the voltage signal and According to the voltage signal, a driving signal for driving the second exciter to vibrate is generated, and the second exciter receives the driving signal to generate the opposite vibration.
  • a processor installed in the receiving space, the processor is electrically connected to the piezoelectric sheet and the second exciter, respectively, to receive and analyze the voltage signal and According to the voltage signal, a driving signal for driving the second exciter to vibrate is generated, and the second exciter receives the driving signal to generate the opposite vibration.
  • the processor is electrically connected to the first exciter, and the processor drives the first exciter to generate vibration.
  • the middle frame, the fixed wall and the rear cover are integrally formed.
  • a fixed wall is formed by extending the middle frame, the fixed wall is accommodated in the accommodation space, and the first exciter and the second exciter are respectively arranged on opposite sides of the fixed wall. , and set the piezoelectric sheet on the back cover.
  • This structure enables the first exciter to drive the screen to vibrate, the vibration is transmitted to the piezoelectric sheet of the back cover through the middle frame, the piezoelectric sheet senses the vibration of the back cover and generates a voltage signal, and the second exciter generates reverse vibration according to the voltage signal , the generated reverse vibration drives the fixed wall to vibrate in the opposite direction and equal in magnitude to the vibration direction of the first exciter to drive the fixed wall to vibrate, so that the back cover is stationary, thereby greatly reducing the shell vibration of the mobile terminal, so that the user When the mobile terminal is picked up, the vibration felt by the user is small, so that the user's use experience is good.
  • FIG. 1 is a schematic three-dimensional structure diagram of a mobile terminal of the present invention.
  • FIG. 2 is an exploded view of a part of the three-dimensional structure of the mobile terminal of the present invention
  • Fig. 3 is a sectional view along line A-A in Fig. 1;
  • FIG. 4 is a partial enlarged schematic view of the part shown in B in FIG. 3 .
  • the present invention provides a mobile terminal 100, the mobile terminal 100 includes a middle frame 1, a fixed wall 2, a back cover 3, a screen 4, a first exciter 5, a piezoelectric sheet 6 and a first Two exciters 7.
  • the mobile terminal 100 may be a mobile phone, a tablet computer, a phone watch, or the like.
  • the middle frame 1 has an annular hollow structure.
  • the screen 4 and the back cover 3 are respectively covered on opposite sides of the middle frame 1 .
  • the middle frame 1 , the screen 4 and the back cover 3 together form an accommodation space 10 .
  • the fixed wall 2 is formed by extending from the middle frame 1 into the receiving space 10 .
  • the fixed wall 2 is spaced apart from the rear cover 3 .
  • the fixed wall 2 is used for installing the first exciter 5 and the second exciter 7 .
  • the screen 4 is covered on the middle frame 1 .
  • the screen 4 can be different types of screens, such as OLED hard screen, soft screen and LCD.
  • the middle frame 1 , the fixed wall 2 and the back cover 3 are integrally formed. This structure facilitates easy assembly of the mobile terminal 100 , and makes the mobile terminal 100 sturdy in structure and beneficial to the first An exciter 5 and the second exciter 7 adjust the casing vibration of the mobile terminal 100 .
  • the first exciter 5 drives the screen 4 to vibrate and sound.
  • the first exciter 5 is installed in the receiving space 10 . Specifically, the first exciter 5 is fixed on the side of the fixed wall 2 close to the screen 4 .
  • the first exciter 5 is in contact with the screen 4 . That is, the first exciter 5 is sandwiched between the fixed wall 2 and the screen 4 .
  • the first exciter 5 drives the screen 4 to emit sound through vibration.
  • the first exciter 5 can also be an integrated device disposed on the fixed wall 2 and spaced from the screen 4.
  • the first exciter 5 drives the fixed wall 2
  • the vibration of the wall 2 is transmitted to the middle frame 1 and the screen 4 in turn through the vibration of the fixed wall 2 , so that it is also possible to drive the screen 4 to emit sound.
  • the piezoelectric sheet 6 is installed in the receiving space 10 . Specifically, the piezoelectric sheet 6 is fixed on the back cover 3 to sense the vibration of the back cover 3 and generate a voltage signal.
  • the inevitable situation is that the vibration of the first exciter 5 is transmitted to the middle frame 1 and the back cover 3 in turn, thereby causing the mobile terminal 100 shell vibration. At this time, the user will feel the vibration when holding the mobile terminal 100 .
  • the back cover 3 drives the piezoelectric sheet 6 to deform. Due to the device properties of the piezoelectric sheet 6, its deformation causes a certain voltage to be generated at both ends of the piezoelectric sheet 6. The greater the deformation of the piezoelectric sheet 6, the greater the deformation of the piezoelectric sheet 6. The higher the voltage, the more the voltage signal is formed.
  • the orthographic projection of the first exciter 5 to the back cover 3 along the vibration direction of the screen 4 and the positive projection of the piezoelectric sheet 6 to the back cover 3 along the vibration direction The projections are spaced apart from each other. That is to say, the vibration of the first exciter 5 will not directly affect the piezoelectric sheet 6 through the air in the accommodation space 10 , and the piezoelectric sheet 6 is triggered by the vibration of the back cover 3 , thereby The piezoelectric sheet 6 senses the vibration of the back cover 3 to generate the voltage signal, which can accurately feedback the vibration state of the casing vibration of the mobile terminal 100 , that is, the voltage signal is related to the casing vibration of the mobile terminal 100 . Correlation is high.
  • the piezoelectric sheet 6 is located at the center of the back cover 3 . This position makes the voltage signal have the highest correlation with the case vibration of the mobile terminal 100 , so that the piezoelectric sheet 6 can accurately feedback the case vibration state of the mobile terminal 100 .
  • the second exciter 7 is fixed on the side of the fixed wall 2 close to the rear cover 3 .
  • the second exciter 7 is spaced apart from the rear cover 3 .
  • the second exciter 7 generates reverse vibration according to the voltage signal.
  • the vibration direction in which the reverse vibration drives the fixed wall 2 to vibrate is opposite to and equal in magnitude to the vibration direction in which the first exciter 5 drives the fixed wall 2 to vibrate, so that the back cover 3 is stationary. That is to say, the reverse vibration generated by the second exciter 7 and the vibration generated by the first exciter 5 can cancel each other on the fixed wall 2 .
  • This structure enables the second exciter 7 to generate the opposite vibration corresponding to the vibration generated by the first exciter 5 , thereby greatly reducing the casing vibration of the mobile terminal 100 . Therefore, the vibration that the user feels when holding the mobile terminal 100 is small, so that the user's use experience is good.
  • the second exciter 7 and the first exciter 5 are respectively disposed on opposite sides of the fixed wall 2 .
  • the orthographic projection of the first exciter 5 to the back cover 3 along the vibration direction of the screen 4 and the positive projection of the second exciter 7 to the back cover 3 along the vibration direction overlap at least partially.
  • the second exciter 7 is at least partially facing the first exciter 5 , which is beneficial to the second exciter 7 When vibrating with the first exciter 5 at the same time, the effect of mutual cancellation of the casing vibration of the mobile terminal 100 is good.
  • the orthographic projection of the first exciter 5 to the back cover 3 along the vibration direction of the screen 4 completely falls on the edge of the second exciter 7
  • the vibration direction is within the range of the orthographic projection of the back cover 3 . That is to say, the second exciter 7 is exactly opposite to the first exciter 5 on the opposite sides of the fixed wall 2 .
  • the designer can also try to set the second exciter 7 and the first exciter 5 at different positions to achieve the best user experience.
  • the mobile terminal 100 further includes the processor 8 installed in the receiving space 10 .
  • the processor 8 is respectively electrically connected with the piezoelectric sheet 6 and the second exciter 7 to receive and analyze the voltage signal and generate a driving signal for driving the second exciter 7 to vibrate according to the voltage signal .
  • the second exciter 7 receives the driving signal to generate the reverse vibration.
  • the processor 8 is electrically connected to the first exciter 5 .
  • the processor 8 drives the first exciter 5 to vibrate.
  • the processor 8 can also optimize the vibration for driving the first exciter 5 after analyzing the voltage signal. That is, the processor 8 drives the first exciter 5 and the second exciter 7 at the same time, so that the shell vibration of the mobile terminal 100 can be controlled to a very small level, so that the user experience is good.
  • the processor 8 can also adjust the casing vibration of the mobile terminal 100 according to user requirements, and can dynamically adjust the vibration in some scenarios requiring vibration, such as vibrating with the rhythm of music and giving an alarm.
  • the first exciter 5, the piezoelectric sheet 6, the second exciter 7 and the processor 8 are all components or modules commonly used by those skilled in the art.
  • the specific model used is selected according to actual needs, and will not be described in detail here.
  • a fixed wall is formed by extending the middle frame, the fixed wall is accommodated in the accommodation space, and the first exciter and the second exciter are respectively arranged on opposite sides of the fixed wall. , and set the piezoelectric sheet on the back cover.
  • This structure enables the first exciter to drive the screen to vibrate, the vibration is transmitted to the piezoelectric sheet of the back cover through the middle frame, the piezoelectric sheet senses the vibration of the back cover and generates a voltage signal, and the second exciter generates reverse vibration according to the voltage signal , the generated reverse vibration drives the fixed wall to vibrate in the opposite direction and equal in magnitude to the vibration direction of the first exciter to drive the fixed wall to vibrate, so that the back cover is stationary, thereby greatly reducing the shell vibration of the mobile terminal, so that the user When the mobile terminal is picked up, the vibration felt by the user is small, so that the user's use experience is good.

Landscapes

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

Abstract

本发明提供了一种移动终端，其包括中框、分别盖设于中框相对两侧并共同围成收容空间的屏幕和后盖、由中框向收容空间内延伸的固定壁、固定于固定壁靠近屏幕一侧的第一激励器以及分别安装于收容空间内的压电片和第二激励器，第一激励器驱动屏幕振动发声，压电片固定于后盖用以感应后盖的振动并产生电压信号，第二激励器固定于固定壁靠近后盖的一侧并与后盖间隔设置，第二激励器根据电压信号产生反向振动，反向振动带动固定壁振动的振动方向与第一激励器带动固定壁振动的振动方向相反且大小相等，以使后盖静止。与相关技术相比，本发明的移动终端的壳振小且用户体验好。

Description

移动终端 技术领域
本发明涉及电声转换领域，尤其涉及一种移动终端。
 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、最便携的移动终端设备。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，因此，用于播放声音的发声器件被大量应用到现在的智能移动设备之中。随着功能的升级，移动终端的体积有限，则硬件需要断的优化体积，于是出现在通过激励器驱动屏幕发声以替代发声器件发声的结构。
相关技术的移动终端包括壳体、盖设于所述壳体并围成收容空间的屏幕以及安装于所述收容空间内并抵接所述屏幕的激励器，通过激励器振动以驱动所述屏幕振动发声。
然而，相关技术中的移动终端通过激励器振动以驱动所述屏幕振动发声, 所述屏幕振动造成与所述屏幕相连接的所述壳体跟随振动，使用者拿者所述移动终端的设备时会感受到振动，从而使得用户的使用体验不好。
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
本发明的目的在于提供一种壳振小且用户体验好的移动终端。
 技术解决方案
为达到上述目的，本发明提供一种移动终端，其包括中框、分别盖设于所述中框相对两侧并共同围成收容空间的屏幕和后盖、由所述中框向所述收容空间内延伸的固定壁、固定于所述固定壁靠近所述屏幕一侧的第一激励器以及分别安装于所述收容空间内的压电片和第二激励器，所述第一激励器驱动所述屏幕振动发声，所述压电片固定于所述后盖用以感应所述后盖的振动并产生电压信号，所述第二激励器固定于所述固定壁靠近所述后盖的一侧并与所述后盖间隔设置，所述第二激励器根据所述电压信号产生反向振动，所述反向振动带动所述固定壁振动的振动方向与所述第一激励器带动所述固定壁振动的振动方向相反且大小相等，以使所述后盖静止。
优选的，所述第一激励器抵接于所述屏幕。
优选的，所述第一激励器沿所述屏幕的振动方向向所述后盖的正投影与所述第二激励器沿所述振动方向向所述后盖的正投影至少部分重叠。
优选的，所述第一激励器沿所述振动方向向所述后盖的正投影完全落在所述第二激励器沿所述振动方向向所述后盖的正投影的范围内。
优选的，所述第一激励器沿所述振动方向向所述后盖的正投影与所述压电片沿所述振动方向向所述后盖的正投影相互间隔。
优选的，所述压电片位于所述后盖的中心位置。
优选的，所述移动终端还包括安装于所述收容空间内的处理器，所述处理器分别与所述压电片和所述第二激励器电连接，以接收和分析所述电压信号并根据该电压信号产生驱动所述第二激励器振动的驱动信号，所述第二激励器接收所述驱动信号产生所述反向振动。
优选的，所述处理器与所述第一激励器电连接，所述处理器驱动所述第一激励器产生振动。
优选的，所述中框、所述固定壁以及所述后盖一体成型。
 有益效果
与相关技术相比，本发明的移动终端通过在中框延伸形成固定壁，并将固定壁收容于收容空间内，再将第一激励器和第二激励器分别设置于固定壁的相对两侧，并将压电片设置于后盖上。该结构使得第一激励器驱动屏幕振动时，该振动通过中框传递到后盖的压电片，压电片感应后盖的振动并产生电压信号，第二激励器根据电压信号产生反向振动，所产生的反向振动带动固定壁振动的振动方向与第一激励器带动固定壁振动的振动方向相反且大小相等，以使后盖静止，从而大幅度减弱移动终端的壳振，从而使用者拿者所述移动终端时会感受到的振动小，从而使得用户的使用体验好。
 附图说明
为了更清楚地说明本发明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发明的一些实施例，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为本发明移动终端的立体结构示意图；
图2为本发明的移动终端的部分立体结构分解图；
图3为沿图1中A-A线剖视图；
图4为图3中B所示部分的局部放大示意图。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明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发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，都属于本发明保护的范围。
请同时参阅图1-4，本发明提供一种移动终端100，所述移动终端100包括中框1、固定壁2、后盖3、屏幕4、第一激励器5、压电片6以及第二激励器7。所述移动终端100可为手机、平板电脑、电话手表等。
所述中框1呈环状中空结构。所述屏幕4和所述后盖3分别盖设于所述中框1相对两侧。所述中框1、所述屏幕4以及所述后盖3共同围成收容空间10。
所述固定壁2由所述中框1向所述收容空间10内延伸形成。所述固定壁2与所述后盖3间隔设置。所述固定壁2用于安装所述第一激励器5和所述第二激励器7。
所述屏幕4盖设于所述中框1。所述屏幕4可以为不同种类屏幕，如OLED硬屏、软屏及LCD等。
本实施方式中，所述中框1、所述固定壁2以及所述后盖3一体成型，该结构有利于所述移动终端100易于装配，并使得所述移动终端100结构坚固并有利于第一激励器5和所述第二激励器7对所述移动终端100的壳振的调节。
所述第一激励器5驱动所述屏幕4振动发声。所述第一激励器5安装于所述收容空间10内。具体的，所述第一激励器5固定于所述固定壁2靠近所述屏幕4的一侧。
本实施方式中，所述第一激励器5抵接于所述屏幕4。也就是说，所述第一激励器5夹设于所述固定壁2和所述屏幕4之间。所述第一激励器5通过振动驱动所述屏幕4发声。当然，不限于此，所述第一激励器5还可以为一体式器件设置于所述固定壁2，并与所述屏幕4间隔设置，该结构所述第一激励器5通过驱动所述固定壁2振动，通过所述固定壁2振动依次传导至所述中框1和所述屏幕4，从而实现驱动所述屏幕4发声也是可以的。
所述压电片6安装于所述收容空间10内。具体的，所述压电片6固定于所述后盖3用以感应所述后盖3的振动并产生电压信号。
在所述第一激励器5驱动所述屏幕4发声时，不可以避免的情况是：第一激励器5振动依次传导至所述中框1和所述后盖3，从而引起所述移动终端100的壳振。这时用户拿者所述移动终端100时会感受到的振动。所述移动终端100的壳振时，具体的，所述后盖3振动时，所述后盖3带动所述压电片6变形。由于所述压电片6的器件性质，其变形导致在所述压电片6的两端产生一定的电压，所述压电片6的变形越大，所述压电片6两端产生的电压越大，即形成所述电压信号。
在本实施方式中，所述第一激励器5沿所述屏幕4的振动方向向所述后盖3的正投影与所述压电片6沿所述振动方向向所述后盖3的正投影相互间隔。也就是说，所述第一激励器5的振动不会通过所述收容空间10内的空气直接影响所述压电片6，而且通过所述后盖3振动触发所述压电片6，从而使得所述压电片6感应所述后盖3的振动产生所述电压信号可以准确反馈所述移动终端100的壳振的振动状态，即所述电压信号与所述移动终端100的壳振的相关度较高。
更优的，所述压电片6位于所述后盖3的中心位置。该位置使得所述电压信号与所述移动终端100的壳振的相关度最高，从而使得所述压电片6准确反馈所述移动终端100的壳振状态。
所述第二激励器7固定于所述固定壁2靠近所述后盖3的一侧。所述第二激励器7与所述后盖3间隔设置。
所述第二激励器7根据所述电压信号产生反向振动。所述反向振动带动所述固定壁2振动的振动方向与所述第一激励器5带动所述固定壁2振动的振动方向相反且大小相等，以使所述后盖3静止。也就是说所述第二激励器7产生的所述反向振动与所述第一激励器5产生的振动在所述固定壁2是可以相互抵消的。该结构使得所述第二激励器7产生与所述第一激励器5产生的振动对应的所述反向振动，从而大幅度减弱所述移动终端100的壳振。从而使用者拿者所述移动终端100时会感受到的振动小，从而使得用户的使用体验好。
为了更好的应用所述第二激励器7抵消所述第一激励器5产生对所述移动终端100的壳振。所述第二激励器7与所述第一激励器5分别设置于所述固定壁2的相对两侧。本实施方式中，所述第一激励器5沿所述屏幕4的振动方向向所述后盖3的正投影与所述第二激励器7沿所述振动方向向所述后盖3的正投影至少部分重叠。也就是说，在所述固定壁2的相对两侧的正对位置，所述第二激励器7与所述第一激励器5至少部分是正对的，该结构有利所述第二激励器7与所述第一激励器5同时振动时，相互抵消对所述移动终端100的壳振的效果好。
为了抵消对所述移动终端100的壳振效果更佳，所述第一激励器5沿所述屏幕4的振动方向向所述后盖3的正投影完全落在所述第二激励器7沿所述振动方向向所述后盖3的正投影的范围内。也就是说，所述第二激励器7与所述第一激励器5在所述固定壁2的相对两侧完全正对。当然，不限于此，设计者还可以试验将所述第二激励器7与所述第一激励器5设置于不同的位置，达到用户体验最好的情况。
为了更好的分析所述移动终端100的壳振的振动状态，需要对所述电压信号进行检测和处理。因此，所述移动终端100还包括安装于所述收容空间10内的处理器8。所述处理器8分别与所述压电片6和所述第二激励器7电连接，以接收和分析所述电压信号并根据该电压信号产生驱动所述第二激励器7振动的驱动信号。所述第二激励器7接收所述驱动信号产生所述反向振动。
本实施方式中，所述处理器8与所述第一激励器5电连接。所述处理器8驱动所述第一激励器5产生振动。所述处理器8还可以对所述电压信号分析后，优化驱动所述第一激励器5的振动。即所述处理器8同时驱动所述第一激励器5和所述第二激励器7，从而使得所述移动终端100的壳振可以控制到一个非常小的水平，从而使得用户使用体验好。更优的是，所述处理器8还可以根据用户需求调整所述移动终端100的壳振，在一些需要振动的场景可以动态调整振动，比如跟随音乐节奏振动、告警。
需要指出的是：所述第一激励器5、所述压电片6、所述第二激励器7以及所述处理器8均为本领域技术人员常用的元器件或模块，在设计使用中具体采用的型号根据实际需要进行选择，在此不做具体描述。
与相关技术相比，本发明的移动终端通过在中框延伸形成固定壁，并将固定壁收容于收容空间内，再将第一激励器和第二激励器分别设置于固定壁的相对两侧，并将压电片设置于后盖上。该结构使得第一激励器驱动屏幕振动时，该振动通过中框传递到后盖的压电片，压电片感应后盖的振动并产生电压信号，第二激励器根据电压信号产生反向振动，所产生的反向振动带动固定壁振动的振动方向与第一激励器带动固定壁振动的振动方向相反且大小相等，以使后盖静止，从而大幅度减弱移动终端的壳振，从而使用者拿者所述移动终端时会感受到的振动小，从而使得用户的使用体验好。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (9)

  1. 一种移动终端，其包括中框、分别盖设于所述中框相对两侧并共同围成收容空间的屏幕和后盖、由所述中框向所述收容空间内延伸的固定壁以及固定于所述固定壁靠近所述屏幕一侧的第一激励器，所述第一激励器驱动所述屏幕振动发声，其特征在于，所述移动终端还包括分别安装于所述收容空间内的压电片和第二激励器，所述压电片固定于所述后盖用以感应所述后盖的振动并产生电压信号，所述第二激励器固定于所述固定壁靠近所述后盖的一侧并与所述后盖间隔设置，所述第二激励器根据所述电压信号产生反向振动，所述反向振动带动所述固定壁振动的振动方向与所述第一激励器带动所述固定壁振动的振动方向相反且大小相等，以使所述后盖静止。
  2. 根据权利要求1所述的移动终端，其特征在于，所述第一激励器抵接于所述屏幕。
  3. 根据权利要求1所述的移动终端，其特征在于，所述第一激励器沿所述屏幕的振动方向向所述后盖的正投影与所述第二激励器沿所述振动方向向所述后盖的正投影至少部分重叠。
  4. 根据权利要求3所述的移动终端，其特征在于，所述第一激励器沿所述振动方向向所述后盖的正投影完全落在所述第二激励器沿所述振动方向向所述后盖的正投影的范围内。
  5. 根据权利要求3所述的移动终端，其特征在于，所述第一激励器沿所述振动方向向所述后盖的正投影与所述压电片沿所述振动方向向所述后盖的正投影相互间隔。
  6. 根据权利要求1所述的移动终端，其特征在于，所述压电片位于所述后盖的中心位置。
  7. 根据权利要求1所述的移动终端，其特征在于，所述移动终端还包括安装于所述收容空间内的处理器，所述处理器分别与所述压电片和所述第二激励器电连接，以接收和分析所述电压信号并根据该电压信号产生驱动所述第二激励器振动的驱动信号，所述第二激励器接收所述驱动信号产生所述反向振动。
  8. 根据权利要求7所述的移动终端，其特征在于，所述处理器与所述第一激励器电连接，所述处理器驱动所述第一激励器产生振动。
  9. 根据权利要求1所述的移动终端，其特征在于，所述中框、所述固定壁以及所述后盖一体成型。
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