WO2020200233A1 - 终端设备及终端设备的控制方法 - Google Patents

终端设备及终端设备的控制方法 Download PDF

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Publication number
WO2020200233A1
WO2020200233A1 PCT/CN2020/082743 CN2020082743W WO2020200233A1 WO 2020200233 A1 WO2020200233 A1 WO 2020200233A1 CN 2020082743 W CN2020082743 W CN 2020082743W WO 2020200233 A1 WO2020200233 A1 WO 2020200233A1
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WO
WIPO (PCT)
Prior art keywords
terminal device
driving mechanism
deformable body
wear
screw
Prior art date
Application number
PCT/CN2020/082743
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English (en)
French (fr)
Inventor
蔡程
李明
周伟杰
Original Assignee
维沃移动通信有限公司
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Filing date
Publication date
Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Publication of WO2020200233A1 publication Critical patent/WO2020200233A1/zh

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    • 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
    • H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/51—Housings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a terminal device and a control method of the terminal device.
  • the shooting function is one of the basic functions of the terminal device, which is completed by the camera of the terminal device.
  • a driving mechanism to drive the camera movement.
  • the driving mechanism of the related technology usually includes an electromagnetic motor and a transmission mechanism.
  • the electromagnetic motor realizes the transmission connection with the camera through the transmission mechanism, thereby realizing the driving of the camera.
  • Electromagnetic motors produce noise during operation.
  • electromagnetic motors contain coils and magnetic fields, which are more susceptible to external magnetic fields.
  • the magnetic fields generated by electromagnetic motors will also cause some of the terminal equipment to be electromagnetically sensitive. Parts are affected.
  • the electromagnetic motor realizes drive control through a gear box, and the entire drive mechanism has a complicated structure, a large space occupation, and low precision.
  • the present disclosure discloses a terminal device to solve the problems of electromagnetic interference, relatively large noise, relatively complex structure, low precision, and relatively large volume of driving mechanisms in related technologies.
  • a terminal device including:
  • a driving mechanism the driving mechanism is arranged in the housing, the driving mechanism includes a power source, a ring-shaped piezoelectric member, and a deformable body, the power source is electrically connected to the ring-shaped piezoelectric member, and the deformable body is arranged at On the ring-shaped piezoelectric member, the deformable body can rotate with the deformation of the ring-shaped piezoelectric member, and the deformable body is connected with the driven part to drive the driven part to move.
  • the housing is provided with a through hole
  • the driving mechanism further includes a lead screw and a lead screw cover
  • the lead screw cover is matched with the lead screw
  • the deformable body passes through the lead screw and the lead screw
  • the screw sleeve is connected with the driven component to drive the driven component to extend or retract from the through hole.
  • the driving mechanism further includes a wear-resistant sheet
  • the lead screw is connected to a surface of one side of the wear-resistant sheet, and the surface of the other side of the wear-resistant sheet is in contact with the deformable body, so The lead screw rotates with the wear-resistant plate.
  • the surface roughness of the wear-resistant sheet in contact with the deformable body is greater than the roughness of other surfaces of the wear-resistant sheet.
  • the lead screw is adhesively fixed on the wear-resistant sheet.
  • the screw is provided with a limit portion, the screw sleeve is arranged between the limit portion and the wear-resistant plate, and the limit portion is in a limit fit with the screw sleeve.
  • the material of the wear-resistant sheet is carbon nano material.
  • the outer contours of the projections of the wear-resistant sheet, the deformable body, and the annular piezoelectric component in the direction of the center line of the annular piezoelectric component coincide.
  • the deformable body drives the driven component to rotate.
  • the housing is provided with a through hole
  • the number of the driving mechanism is set to two
  • one of the driving mechanism is the first driving mechanism
  • the other driving mechanism is the second driving mechanism
  • the first driving mechanism It includes the power supply, the ring-shaped piezoelectric member, and the deformed body
  • the second drive mechanism includes the power supply, the ring-shaped piezoelectric member, the deformed body, the lead screw, and the lead screw cover.
  • the rod cover is matched with the lead screw
  • the deformable body of the second drive mechanism is connected to the annular piezoelectric member of the first drive mechanism through the lead screw and the lead screw cover, and the second drive After the mechanism drives the driven component to extend from the through hole, the first drive mechanism drives the driven component to rotate.
  • the deformable body is a copper block.
  • a control method of terminal equipment, applied to the above terminal equipment, the control method includes:
  • the power supply is controlled to supply power to the ring-shaped piezoelectric member, so that the driving mechanism drives the driven component to move.
  • the terminal device disclosed in the present disclosure utilizes the inverse piezoelectric effect of the ring-shaped piezoelectric member to make the deformable body rotate, thereby driving the driven part to move.
  • the driving mechanism No coils and magnets are needed, so electric and magnetic fields that affect the environment will not be generated, and there will be no electromagnetic interference, and of course, it will not be affected by electromagnetic interference in the surrounding environment.
  • the mechanical vibration generated by the annular piezoelectric member and the deformable body during the working process is an ultrasonic vibration that cannot be heard by human ears, so the noise is very small.
  • the terminal device provided by the present disclosure has the advantages of high precision of the driving mechanism, relatively simple structure and small volume.
  • FIG. 1 is a schematic structural diagram of a part of the structure of a terminal device disclosed in an embodiment of the disclosure when the camera is in a retracted state;
  • FIG. 2 is a schematic structural diagram of a part of the structure of the terminal device disclosed in an embodiment of the disclosure when the camera is in an extended state;
  • FIG. 3 is a schematic diagram of a partial structure of a terminal device disclosed in another embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of a partial structure of a terminal device disclosed in another embodiment of the present disclosure.
  • FIG. 5 is a schematic flowchart of a method for controlling a terminal device disclosed in an embodiment of the disclosure.
  • 100-driven component 200-housing, 210-frame, 211-through hole, 220-inner cavity, 300-drive mechanism, 300a-first drive mechanism, 300b-second drive mechanism, 310-power supply, 320- Annular piezoelectric component, 330-deformed body, 340-screw, 350-screw cover, 360-wear-resistant sheet, 370-limiting part.
  • an embodiment of the present disclosure discloses a terminal device.
  • the terminal device includes a driven component 100, a housing 200 and a driving mechanism 300.
  • the driven component 100 may include at least one of an optical component, an acoustic component, a sensing component, and a USB interface.
  • the optical component here may specifically be a camera, a fill light, a fingerprint recognition module, etc.
  • the acoustic component may be Receiver and other devices.
  • the housing 200 provides an installation basis for the driven component 100 and the driving mechanism 300.
  • the driving mechanism 300 is disposed in the housing 200, the driving mechanism 300 is connected to the driven component 100, and the driving mechanism 300 can drive the driven component 100 to move.
  • the driving mechanism 300 includes a power source 310, a ring-shaped piezoelectric member 320, and a deformable body 330.
  • the ring-shaped piezoelectric member 320 is made of piezoelectric material, and the ring-shaped piezoelectric member 320 is disposed in the housing 200.
  • the power supply 310 is electrically connected to the ring-shaped piezoelectric member 320 to provide the required voltage for the deformation of the ring-shaped piezoelectric member 320.
  • the power supply 310 may be a circuit board in a terminal device, or a battery of the terminal device.
  • the deformable body 330 is disposed on the ring-shaped piezoelectric member 320, and the deformable body 330 can deform along with the ring-shaped piezoelectric member 320 to form a traveling wave propagating along the circumferential direction of the ring-shaped piezoelectric member 320.
  • the deformable body 330 may be attached to the ring-shaped piezoelectric member 320, so that it is more likely to be affected by the ring-shaped piezoelectric member 320 to form a traveling wave.
  • the power supply 310 applies an electrical signal to the ring-shaped piezoelectric member 320, under the action of the inverse piezoelectric effect of the piezoelectric material, the ring-shaped piezoelectric member 320 will alternately expand and contract, and the power supply 310 applies settings Under the frequency and voltage conditions of, the deformable body 330 forms a traveling wave propagating in the circumferential direction (ie, circumferential direction) of the annular piezoelectric member 320 under the influence of the annular piezoelectric member 320, so that the deformable body 330 vibrates periodically.
  • the driven component 100 is rotatably arranged in the housing 200.
  • the deformable body 330 When the deformable body 330 vibrates periodically, it can directly drive the driven component 100 to rotate in the housing 200. It should be noted that the driven component 100 can also be rotatably arranged outside the housing 200. When the deformable body 330 vibrates periodically, it can directly drive the driven component 100 to rotate outside the housing 200.
  • the terminal device disclosed in the embodiments of the present disclosure utilizes the inverse piezoelectric effect of the ring-shaped piezoelectric member 320 to cause the deformable body 330 to periodically vibrate, thereby driving the driven component 100 to move.
  • the driving mechanism 300 does not need coils and magnets, so it does not generate electric and magnetic fields that affect the environment, and there is no electromagnetic interference, and of course it is not affected by electromagnetic interference in the surrounding environment.
  • the mechanical vibrations generated by the annular piezoelectric member 320 and the deformable body 330 during the working process are ultrasonic vibrations that cannot be heard by human ears, so the noise is very small.
  • the driving mechanism provided in this embodiment has the advantages of a relatively simple structure and a small volume.
  • the driven component 100 is driven to move by the ultrasonic vibration generated by the deformable body 330 in the working process.
  • the amplitude of the ultrasonic vibration is usually on the micron level.
  • the position resolution of the driven component 100 is relatively high. High, can achieve high-precision speed control and position control. Since the position control with higher precision can be achieved, compared with the motor usually controlled by a reducer in the related art, the terminal device disclosed in the embodiment of the present disclosure can also avoid the noise generated by the reducer, which can undoubtedly further reduce noise.
  • the housing 200 may have a through hole 211 that communicates with the inner cavity 220 of the housing 200, and the through hole 211 can allow the driven component 100 to pass through, and then enter and exit the housing 200.
  • the housing 200 includes a frame 210, and the frame 210 is provided with a through hole 211.
  • the housing 200 of different structure has different parts forming the frame 210.
  • the housing 200 may include a front shell, a rear cover, and a middle frame provided therebetween, and the frame 210 may be formed on the middle frame. In this case, the frame 210 can be used as a part of the middle frame.
  • the housing 200 may include a front cover and a rear cover, and the frame 210 may be formed on the rear cover.
  • the through hole 211 can also be formed on other components of the housing 200 to achieve entry and exit of the housing 200, and is not limited to the through hole 211 opened on the frame 210.
  • the driving mechanism may further include a screw 340 and a screw cover 350.
  • the screw cover 350 cooperates with the lead screw 340, and the deformable body 330 is connected to the driven component 100 through the lead screw 340 and the lead screw cover 350.
  • the lead screw 340 is arranged on the deformable body 330.
  • the screw cover 350 Since the screw cover 350 is matched with the screw 340, when the screw 340 rotates along its own axis, the screw cover 350 moves along the axis of the screw 340, thereby driving the driven component 100 to move.
  • the ring-shaped piezoelectric member 320 has an amplitude of 1 micron each time, stretches and deforms about 70,000 times per second, and finally realizes that the driven part 100 completes a movement of several centimeters, so as to meet the requirements of the driven part 100 to move.
  • the screw cover 350 is connected to the driven part 100, and the movement of the screw cover 350 drives the driven part 100 to extend or retract from the through hole 211.
  • the voltage direction of the power supply 310 is variable, and the direction of the electric field acting on the annular piezoelectric member 320 is changed.
  • the deformation of the annular piezoelectric member 320 finally drives the screw 340 to rotate, thereby causing
  • the screw cover 350 drives the driven component 100 to extend from the through hole 211; when the electric field direction is opposite, the deformation of the annular piezoelectric member 320 finally drives the screw 340 to rotate, so that the screw cover 350 drives the driven component 100 from the through hole 211 retracts, so that the driven component 100 is hidden in the inner cavity 220 of the housing 200.
  • the number of driving mechanisms 300 can be set to two, where one driving mechanism 300 is the first driving mechanism 300a, and the other driving mechanism 300 is the second driving mechanism 300b.
  • the first driving mechanism 300a includes the aforementioned power source 310, the annular piezoelectric member 320, and the deformable body 330;
  • the second driving mechanism 300b includes the aforementioned power source 310, the annular piezoelectric member 320, the deformable body 330, the lead screw 340, and the Screw cover 350.
  • the deformable body 330 of the second driving mechanism 300b is connected to the ring-shaped piezoelectric member 320 of the first driving mechanism 300a through the screw 340 and the screw sleeve 350, and can drive the ring-shaped piezoelectric member 320 to move, so that the driven component 100 can be moved from The through hole 211 extends or retracts.
  • the power source 310 of the first driving mechanism 300a is energized, and then the driven component 100 is driven to rotate through its ring-shaped piezoelectric member 320 and deformable body 330, so that it is driven
  • the component 100 can work in different directions.
  • the driven component 100 includes a camera
  • the camera can realize different working states such as front shooting, rear shooting, and panoramic shooting under the action of the first driving mechanism 300a.
  • the deformable body 330 forms a traveling wave propagating along the circumferential direction of the annular piezoelectric member 320, and the deformable body 330 and the lead screw 340 generate relative frictional movement, thereby driving the lead screw 340 Rotate.
  • the lead screw 340 is likely to cause greater wear.
  • the driving mechanism 300 disclosed in the embodiment of the present disclosure may further include a wear plate 360, wherein a surface of one side of the wear plate 360 is connected to the screw 340, and the wear plate 360 The surface of the other side is in contact with the deformable body 330.
  • the lead screw 340 is in contact with the deformable body 330 through the wear plate 360.
  • the friction between the deformable body 330 and the wear plate 360 can drive the wear plate 360 to rotate, and the lead screw 340 and the wear plate 360 Therefore, the lead screw 340 can rotate under the drive of the wear plate 360. Due to the high wear resistance of the wear plate 360, the lead screw 340 can be prevented from being worn.
  • the contact part of the lead screw 340 and the deformable body 330 may also be subjected to wear-resistant treatment.
  • the wear-resistant plate 360 may also be provided. In this case, the wear-resistant plate 360 may be provided between the driven component 100 and the deformable body 330.
  • the wear-resistant sheet 360 is made of a wear-resistant material.
  • the material of the wear-resistant sheet 360 is carbon nano material.
  • the roughness of the surface of the wear-resistant sheet 360 in contact with the deformable body 330 may be greater than the roughness of other surfaces of the wear-resistant sheet 360, and the surface of the wear-resistant sheet 360 in contact with the deformable body 330
  • the relatively high roughness is beneficial to the friction drive of the deformable body 330 to the wear-resistant plate 360 during the deformation process.
  • the surface of the wear-resistant sheet 360 in contact with the deformable body 330 may be provided with a structure that increases friction.
  • the surface of the wear-resistant sheet 360 in contact with the deformable body 330 may be provided with protrusions.
  • the lead screw 340 is connected to the wear plate 360, and the wear plate 360 can drive the lead screw 340 to rotate.
  • the lead screw 340 may be fixedly connected to the wear-resistant sheet 360.
  • the lead screw 340 is bonded and fixed to the wear-resistant sheet 360, and the bonding method has the advantages of convenient operation and firm fixation.
  • the lead screw 340 can also be fixedly connected with the wear-resistant sheet 360 through a clamping structure, a connecting piece (specifically, a threaded connecting piece) and other methods.
  • the contact area between the screw 340 and the deformable body 330 is small, and the friction of the screw 340 by the deformed body 330 is small.
  • the wear-resistant plate 360 is easier to design a larger area, and then realizes the contact with the deformable body 330. Large area contact, larger contact area can undoubtedly achieve greater driving force through friction.
  • the outer contours of the projections of the wear-resistant sheet 360, the deformable body 330 and the annular piezoelectric member 320 in the direction of the center line of the annular piezoelectric member 320 coincide. In this case, in a limited space, The contact area between the wear-resistant sheet 360 and the deformable body 330 can be greatly increased.
  • the lead screw cover 350 moves along the axis of the lead screw 340, thereby driving the driven component 100 to move.
  • the lead screw 340 can be set to a limited position
  • the part 370 and the screw cover 350 may be arranged between the limit part 370 and the wear-resistant plate 360.
  • the limit part 370 is in position-limiting cooperation with the screw cover 350 so as to limit the excessive movement of the screw cover 350.
  • the limiting portion 370 can have various structures.
  • the limiting portion 370 is a limiting piece provided at the end of the screw 340.
  • the limiting piece can not only play a limiting role, but also due to its relatively thick thickness. The thinness makes the overall weight of the driving mechanism 300 easier to control.
  • the limiting portion 370 may be fixed on the lead screw 340.
  • the deformable body 330 can be deformed under the action of the annular piezoelectric member 320, and the deformable body 330 may be a metal block, such as a copper block.
  • the ring-shaped piezoelectric member 320 is made of piezoelectric material.
  • the ring-shaped piezoelectric member 320 may be made of piezoelectric material such as piezoelectric crystal, polyvinylidene fluoride, and piezoelectric ceramic material.
  • the annular piezoelectric member 320 is made of piezoelectric ceramic material, which has high strength and high temperature resistance.
  • the embodiment of the present disclosure also discloses a control method of the terminal device, and the disclosed control method is applied to the terminal device described in the above embodiment.
  • the disclosed control method includes the following steps:
  • S102 Control the direction of the voltage applied by the power supply 310 to the annular piezoelectric member 320 according to the first instruction, so that the driving mechanism 300 drives the driven component 100 to move.
  • step S102 the direction of the voltage is different, and the direction of the electric field applied by the power supply 310 to the annular piezoelectric member 320 is different.
  • the power supply 310 can control the direction of the electric field to control the direction of movement of the driven component 100.
  • the terminal devices disclosed in the embodiments of the present disclosure may be electronic devices such as smart phones, tablet computers, e-book readers, wearable devices (such as smart watches), and game consoles.
  • the embodiments of the present disclosure do not limit the specific types of terminal devices.

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  • Signal Processing (AREA)
  • Multimedia (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

本公开公开一种终端设备，包括：被驱动部件；壳体；驱动机构，所述驱动机构设置在所述壳体之内，所述驱动机构包括电源、环形压电构件和变形体，所述电源与所述环形压电构件电连接，所述变形体设置在所述环形压电构件上，所述变形体可随所述环形压电构件的变形而转动，所述变形体与所述被驱动部件相连，以驱动所述被驱动部件运动。本公开还公开一种终端设备的控制方法。

Description

终端设备及终端设备的控制方法
相关申请的交叉引用
本申请主张在2019年4月2日在中国提交的中国专利申请号No.201910263222.5的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，尤其涉及一种终端设备及终端设备的控制方法。
背景技术
拍摄功能是终端设备的基本功能之一，由终端设备的摄像头来完成。为了实现摄像头在不同方向上的工作，或者实现摄像头在工作状态与收纳状态之间的切换，通常需要采用驱动机构驱动摄像头运动。
相关技术的驱动机构通常包括电磁式电机和传动机构，电磁式电机通过传动机构实现与摄像头的传动连接，进而实现对摄像头的驱动。电磁式电机在工作的过程中会产生噪音，同时，电磁式电机所包含有线圈和磁场，较容易受到外界磁场的影响，并且电磁式电机产生的磁场也会导致终端设备的一些对电磁敏感的部件受到影响。此外，电磁式电机通过减速箱实现驱动控制，整个驱动机构结构复杂、占用空间较大，且精度不高。
发明内容
本公开公开一种终端设备，以解决相关技术的驱动机构存在电磁干扰、噪音较大、结构较为复杂、精度不高及体积较大的问题。
为了解决上述问题，本公开采用下述技术方案：
一种终端设备，包括：
被驱动部件；
壳体；
驱动机构，所述驱动机构设置在所述壳体之内，所述驱动机构包括电源、 环形压电构件和变形体，所述电源与所述环形压电构件电连接，所述变形体设置在所述环形压电构件上，所述变形体可随所述环形压电构件的变形而转动，所述变形体与所述被驱动部件相连，以驱动所述被驱动部件运动。
可选的，所述壳体开设有通孔，所述驱动机构还包括丝杠和丝杠套，所述丝杠套与所述丝杠配合，所述变形体通过所述丝杠和所述丝杠套与所述被驱动部件相连，以带动所述被驱动部件从所述通孔伸出或缩回。
可选的，所述驱动机构还包括耐磨片，所述丝杠与所述耐磨片的一侧的表面相连，所述耐磨片的另一侧的表面与所述变形体接触，所述丝杠随所述耐磨片转动。
可选的，所述耐磨片与所述变形体接触的表面的粗糙度大于所述耐磨片的其他表面的粗糙度。
可选的，所述丝杠粘接固定在所述耐磨片上。
可选的，所述丝杠设置有限位部，所述丝杠套设置在所述限位部与所述耐磨片之间，所述限位部与所述丝杠套限位配合。
可选的，所述耐磨片的材料为碳纳米材料。
可选的，所述耐磨片、所述变形体和所述环形压电构件在所述环形压电构件的中心线方向的投影的外轮廓重合。
可选的，所述变形体驱动所述被驱动部件转动。
可选的，所述壳体开设有通孔，所述驱动机构的数量设置为两个，其中一个驱动机构为第一驱动机构，另一个驱动机构为第二驱动机构，所述第一驱动机构包括所述电源、所述环形压电构件和所述变形体，所述第二驱动机构包括所述电源、所述环形压电构件、所述变形体、丝杠和丝杠套，所述丝杠套与所述丝杠配合，所述第二驱动机构的变形体通过所述丝杠和所述丝杠套与所述第一驱动机构的所述环形压电构件相连，所述第二驱动机构驱动所述被驱动部件从所述通孔伸出后，所述第一驱动机构驱动所述被驱动部件转动。
可选的，所述变形体为铜块。
一种终端设备的控制方法，应用于上述终端设备，所述控制方法包括：
接收第一指令；
根据所述第一指令控制所述电源向所述环形压电构件供电，使得所述驱动机构驱动所述被驱动部件运动。
本公开采用的技术方案能够达到以下有益效果：
本公开公开的终端设备利用环形压电构件的逆压电效应使得变形体可以转动，进而驱动被驱动部件运动，相比于背景技术所述的驱动方式而言，本公开实施例中，驱动机构无需线圈和磁铁，因此不会产生对环境有影响的电场和磁场，也就没有电磁干扰，当然也不会受周围环境中的电磁干扰。利用压电材料的逆压电效应进行驱动，环形压电构件和变形体在工作过程产生的机械振动为人耳朵听不到的超声振动，因此噪音很小。本公开提供的终端设备具有驱动机构精度较高，结构较为简单，体积较小的优点。
附图说明
此处所说明的附图用来提供对本公开的进一步理解，构成本公开的一部分，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定，其中：
图1为本公开实施例公开的终端设备的部分结构在摄像头处于收缩状态时的结构示意图；
图2为本公开实施例公开的终端设备的部分结构在摄像头处于伸展状态时的结构示意图；
图3为本公开另一实施例公开的终端设备的部分结构的示意图；
图4为本公开又一实施例公开的终端设备的部分结构的示意图；
图5为本公开实施例公开的终端设备的控制方法的流程示意图。
附图标记说明：
100-被驱动部件、200-壳体、210-边框、211-通孔、220-内腔、300-驱动机构、300a-第一驱动机构、300b-第二驱动机构、310-电源、320-环形压电构件、330-变形体、340-丝杠、350-丝杠套、360-耐磨片、370-限位部。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚，下面将结合本公开具体 实施例及相应的附图对本公开技术方案进行清楚、完整地描述。显然，所描述的实施例仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，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他实施例，都属于本公开保护的范围。
以下结合附图，详细说明本公开各个实施例公开的技术方案。
如图1和图2所示，本公开实施例公开一种终端设备，该终端设备包括被驱动部件100、壳体200和驱动机构300。其中，被驱动部件100可以包括光学部件、声学部件、传感部件、USB接口中的至少一种，这里的光学部件具体可以是摄像头、补光灯、指纹识别模组等部件，声学器件可以是受话器等器件。
壳体200为被驱动部件100和驱动机构300提供安装基础。
驱动机构300设置在壳体200内，驱动机构300与被驱动部件100相连，驱动机构300能够驱动被驱动部件100运动。本实施例中，驱动机构300包括电源310、环形压电构件320和变形体330。
环形压电构件320由压电材料制成，环形压电构件320设置在壳体200内。电源310与环形压电构件320电连接，进而为环形压电构件320的变形提供所需的电压。电源310可以是终端设备内的电路板，也可以是终端设备的电池。
变形体330设置在环形压电构件320上，变形体330可随环形压电构件320的变形，形成沿环形压电构件320的周向传播的行波。在优选的方案中，变形体330可以贴设在环形压电构件320上，进而更容易受环形压电构件320的影响而形成行波。
在具体的工作过程中，电源310向环形压电构件320施加电信号时，在压电材料的逆压电效应的作用下，环形压电构件320会发生交替伸缩变形，在电源310施加设定的频率和电压条件下，受环形压电构件320的影响，变形体330形成沿环形压电构件320的周向(即圆周方向)传播的行波，从而使得变形体330发生周期性振动。如图3所示，被驱动部件100可转动地设置于壳体200内，当变形体330发生周期性振动时，其可以直接驱动被驱动部件100在壳体200内转动。需要说明的是，也可以将被驱动部件100可转 动地设置于壳体200外，当变形体330发生周期性振动时，其可以直接驱动被驱动部件100在壳体200外转动。
本公开实施例公开的终端设备利用环形压电构件320的逆压电效应使得变形体330发生周期性振动，进而驱动被驱动部件100运动，相比于背景技术所述的驱动方式而言，本公开实施例中，驱动机构300无需线圈和磁铁，因此不会产生对环境有影响的电场和磁场，也就没有电磁干扰，当然也不会受周围环境中的电磁干扰。利用压电材料的逆压电效应进行驱动，环形压电构件320和变形体330在工作过程产生的机械振动为人耳朵听不到的超声振动，因此噪音很小。本实施例提供的驱动机构具有结构较为简单，体积较小的优点。
另外，通过变形体330在工作过程中产生的超声振动来驱动被驱动部件100运动，超声振动的振幅通常在微米级别，在反馈到终端设备的控制系统中，被驱动部件100的位置分辨率较高，能够实现较高精度的速度控制和位置控制。由于能够实现较高精度的位置控制，相比于相关技术中电机通常通过减速器控制移动精度而言，本公开实施例公开的终端设备还能避免使用减速器产生的噪音，这无疑能进一步降低噪音。
本公开实施例中，壳体200可以具有通孔211，该通孔211与壳体200的内腔220连通，该通孔211可供被驱动部件100穿过，进而进出壳体200。通常情况下，壳体200包括边框210，边框210开设有通孔211。不同结构的壳体200，形成边框210的部件则不同。例如，壳体200可以包括前壳、后盖和设置在两者之间的中框，边框210可以成型于中框上。此种情况下，边框210可以作为中框的一部分。再例如，壳体200可以包括前盖和后盖，边框210可以成型于后盖上。当然，通孔211还可以成型于壳体200的其他构件上，进而实现进出壳体200，并非限于开设在边框210上的通孔211。
进一步的实施例中，如图1和图2所示，为了实现被驱动部件100相对于壳体200的伸出和缩回，驱动机构还可以包括丝杠340和丝杠套350，丝杠套350与丝杠340配合，变形体330通过丝杠340和丝杠套350与被驱动部件100相连。具体地，丝杠340设置在变形体330上，在变形体330随环形压电构件发生形变时，变形体330与丝杠340之间产生摩擦，从而在摩擦 力的作用下实现丝杠340绕自身轴线的转动。由于丝杠套350与丝杠340配合，在丝杠340沿自身轴线转动的过程中，丝杠套350沿丝杠340的轴线方向移动，进而带动被驱动部件100移动。例如，环形压电构件320每次振幅为1微米，每秒伸缩变形7万次左右，最终实现被驱动部件100完成数厘米的移动，从而能够满足被驱动部件100移动的需求。
丝杠套350与被驱动部件100相连，丝杠套350的移动带动被驱动部件100从通孔211伸出或缩回。本实施例中，电源310的电压方向可变，进而作用在环形压电构件320上的电场方向发生变化，在一个电场方向下，环形压电构件320的变形最终驱动丝杠340转动，进而使得丝杠套350带动被驱动部件100从通孔211伸出；当电场方向相反时，环形压电构件320的变形最终驱动丝杠340转动，进而使得丝杠套350带动被驱动部件100从通孔211缩回，从而实现被驱动部件100隐藏在壳体200的内腔220中。
如图4所示，另一实施例中，驱动机构300的数量可以设置为两个，其中一个驱动机构300为第一驱动机构300a，另一个驱动机构300为第二驱动机构300b。第一驱动机构300a包括前文所述的电源310、环形压电构件320和变形体330；第二驱动机构300b包括前文所述的电源310、环形压电构件320、变形体330、丝杠340和丝杠套350。该第二驱动机构300b的变形体330通过丝杠340和丝杠套350与第一驱动机构300a的环形压电构件320相连，进而可以驱动环形压电构件320移动，使得被驱动部件100可以从通孔211伸出或者缩回。第二驱动机构300b驱动被驱动部件100从通孔211伸出后，第一驱动机构300a的电源310通电，进而通过其环形压电构件320和变形体330驱动被驱动部件100转动，使得被驱动部件100可以在不同的方向上工作。例如，当被驱动部件100包括摄像头时，该摄像头在第一驱动机构300a的作用下可以实现前置拍摄、后置拍摄、全景拍摄等不同的工作状态。
如上文所述，在具体的工作过程中，变形体330形成沿环形压电构件320的周向传播的行波，变形体330与丝杠340之间产生相对的摩擦移动，从而驱动丝杠340转动。在摩擦的过程中，容易造成丝杠340产生较大的磨损。基于这一技术问题，在优选的方案中，本公开实施例公开的驱动机构300还可以包括耐磨片360，其中，耐磨片360的一侧的表面与丝杠340相连，耐 磨片360的另一侧的表面与变形体330接触。在此种情况下，丝杠340通过耐磨片360实现与变形体330接触，变形体330与耐磨片360之间的摩擦，能够驱动耐磨片360转动，丝杠340与耐磨片360相连，因此丝杠340能够在耐磨片360的带动下转动。由于耐磨片360耐磨性能较高，因此能够避免丝杠340受到磨损。当然，也可以将丝杠340与变形体330接触的部位进行耐磨处理。另外，驱动机构300不包括丝杠340和丝杠套350时，也可以设置该耐磨片360，此时耐磨片360可以设置在被驱动部件100与变形体330之间。
耐磨片360由耐磨材料制成，在一种具体的实施方式中，耐磨片360的材料为碳纳米材料。
为了提高驱动效率，在可选的方案中，耐磨片360与变形体330接触的表面的粗糙度，可以大于耐磨片360其他表面的粗糙度，耐磨片360与变形体330接触的表面的粗糙度较高，有利于变形体330在形变过程中对耐磨片360的摩擦驱动。具体地，耐磨片360与变形体330相接触的表面可以设置有增大摩擦力的结构，例如耐磨片360与变形体330相接触的表面可以分布有凸起。
如上文所述，丝杠340与耐磨片360相连，耐磨片360能够带动丝杠340转动。具体地，丝杠340可以与耐磨片360固定相连。一种具体的实施方式中，丝杠340粘接固定在耐磨片360上，采用粘接的方式具有操作方便、固定牢固等优点。当然，丝杠340也可以与耐磨片360通过卡接结构、连接件(具体可以为螺纹连接件)等其他方式实现固定相连。
通常情况下，丝杠340与变形体330的接触面积较小，丝杠340受变形体330的摩擦较小，上述耐磨片360较容易设计成较大的面积，进而实现与变形体330的大面积接触，较大的接触面积无疑能够通过摩擦实现更大的驱动力。在更为优选的方案中，耐磨片360、变形体330和环形压电构件320在环形压电构件320的中心线方向的投影的外轮廓重合，此种情况下，在有限的空间内，能够较大程度地增大耐磨片360与变形体330的接触面积。
在驱动的过程中，丝杠套350沿着丝杠340的轴线方向移动，进而带动被驱动部件100移动，为了避免丝杠套350过量移动，在优选的方案中，丝 杠340可以设置有限位部370，丝杠套350可以设置在限位部370与耐磨片360之间。限位部370与丝杠套350限位配合，从而能够限制丝杠套350的过度移动。限位部370的结构可以为多种，一种具体的实施方式中，限位部370为设置在丝杠340端部的限位片，限位片不但能发挥限位作用，而且由于厚度较薄而使得驱动机构300的整体重量较容易控制。具体的，限位部370可以固定在丝杠340上。
本公开实施例中，变形体330能够在环形压电构件320的作用下发生形变，变形体330可以为金属块，例如铜块。
环形压电构件320由压电材料制成，具体地，环形压电构件320可以由压电晶体、聚偏氟乙烯、压电陶瓷材料等压电材料制成。在优选的方案中，环形压电构件320由压电陶瓷材料制成，压电陶瓷材料具有较高的强度和耐高温性能。
基于本公开实施例公开的终端设备，如图5所示，本公开实施例还公开一种终端设备的控制方法，所公开的控制方法应用于上文实施例所述的终端设备。所公开的控制方法包括以下步骤：
S101、接收第一指令。
S102、根据第一指令控制电源310施加于环形压电构件320的电压方向，使得驱动机构300驱动被驱动部件100运动。
步骤S102中，电压方向不同，电源310施加于环形压电构件320上的电场方向则不同，在控制的过程中，电源310可以控制电场方向来控制被驱动部件100的运动方向。
本公开实施例公开的终端设备可以是智能手机、平板电脑、电子书阅读器、可穿戴设备(例如智能手表)、游戏机等电子设备，本公开实施例不限制终端设备的具体种类。
本公开上文实施例中重点描述的是各个实施例之间的不同，各个实施例之间不同的优化特征只要不矛盾，均可以组合形成更优的实施例，考虑到行文简洁，在此则不再赘述。
以上所述仅为本公开的实施例而已，并不用于限制本公开。对于本领域技术人员来说，本公开可以有各种更改和变化。凡在本公开的精神和原理之 内所作的任何修改、等同替换、改进等，均应包含在本公开的权利要求范围之内。

Claims (12)

  1. 一种终端设备，包括：
    被驱动部件；
    壳体；
    驱动机构，所述驱动机构设置在所述壳体之内，所述驱动机构包括电源、环形压电构件和变形体，所述电源与所述环形压电构件电连接，所述变形体设置在所述环形压电构件上，所述变形体可随所述环形压电构件的变形而转动，所述变形体与所述被驱动部件相连，以驱动所述被驱动部件运动。
  2. 根据权利要求1所述的终端设备，其中，所述壳体开设有通孔，所述驱动机构还包括丝杠和丝杠套，所述丝杠套与所述丝杠配合，所述变形体通过所述丝杠和所述丝杠套与所述被驱动部件相连，以带动所述被驱动部件从所述通孔伸出或缩回。
  3. 根据权利要求2所述的终端设备，其中，所述驱动机构还包括耐磨片，所述丝杠与所述耐磨片的一侧的表面相连，所述耐磨片的另一侧的表面与所述变形体接触，所述丝杠随所述耐磨片转动。
  4. 根据权利要求3所述的终端设备，其中，所述耐磨片与所述变形体接触的表面的粗糙度大于所述耐磨片的其他表面的粗糙度。
  5. 根据权利要求3所述的终端设备，其中，所述丝杠粘接固定在所述耐磨片上。
  6. 根据权利要求3所述的终端设备，其中，所述丝杠设置有限位部，所述丝杠套设置在所述限位部与所述耐磨片之间，所述限位部与所述丝杠套限位配合。
  7. 根据权利要求3所述的终端设备，其中，所述耐磨片的材料为碳纳米材料。
  8. 根据权利要求3所述的终端设备，其中，所述耐磨片、所述变形体和所述环形压电构件在所述环形压电构件的中心线方向的投影的外轮廓重合。
  9. 根据权利要求1所述的终端设备，其中，所述变形体驱动所述被驱动部件转动。
  10. 根据权利要求1所述的终端设备，其中，所述壳体开设有通孔，所述驱动机构的数量设置为两个，其中一个驱动机构为第一驱动机构，另一个驱动机构为第二驱动机构，所述第一驱动机构包括所述电源、所述环形压电构件和所述变形体，所述第二驱动机构包括所述电源、所述环形压电构件、所述变形体、丝杠和丝杠套，所述丝杠套与所述丝杠配合，所述第二驱动机构的变形体通过所述丝杠和所述丝杠套与所述第一驱动机构的所述环形压电构件相连，所述第二驱动机构驱动所述被驱动部件从所述通孔伸出后，所述第一驱动机构驱动所述被驱动部件转动。
  11. 根据权利要求1所述的终端设备，其中，所述变形体为铜块。
  12. 一种终端设备的控制方法，应用于权利要求1-11中任一项所述的终端设备，所述控制方法包括：
    接收第一指令；
    根据所述第一指令控制所述电源向所述环形压电构件供电，使得所述驱动机构驱动所述被驱动部件运动。
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