WO2021036142A1 - 摄像头伸缩装置和移动终端 - Google Patents

摄像头伸缩装置和移动终端 Download PDF

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Publication number
WO2021036142A1
WO2021036142A1 PCT/CN2019/129848 CN2019129848W WO2021036142A1 WO 2021036142 A1 WO2021036142 A1 WO 2021036142A1 CN 2019129848 W CN2019129848 W CN 2019129848W WO 2021036142 A1 WO2021036142 A1 WO 2021036142A1
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WO
WIPO (PCT)
Prior art keywords
gear
camera
worm
sub
telescopic device
Prior art date
Application number
PCT/CN2019/129848
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English (en)
French (fr)
Inventor
刘春发
孙玉强
王梓铭
周忠厚
贺子和
Original Assignee
歌尔股份有限公司
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 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2021036142A1 publication Critical patent/WO2021036142A1/zh

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    • 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
    • H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices

Definitions

  • the high screen-to-body ratio of smart mobile terminals has become an important development direction.
  • the camera is usually set in a retractable structure. Normally, the camera is located in the mobile terminal housing and hidden on the back of the screen. When you need to use the camera, extend the camera out of the screen. After completion, retract the camera into the housing so that the camera does not occupy the space of the screen and can achieve a high screen-to-body ratio. Therefore, a reasonable design of the retractable structure of the camera is extremely important for realizing a high screen-to-body ratio of the mobile terminal.
  • the main purpose of the present invention is to provide a camera telescopic device and a mobile terminal, aiming to realize the telescopic camera in the mobile terminal, thereby increasing the screen-to-body ratio of the mobile terminal.
  • the camera telescopic device proposed by the present invention includes: a mounting plate; a drive mechanism, the drive mechanism includes a motor, a turbine, and a worm, the motor is mounted on the mounting plate, and the turbine and the worm mesh Connection, the worm drive is connected to the output part of the motor; a transmission gear, the transmission gear is coaxially arranged and connected with the worm wheel; and a connecting piece, the connecting piece includes a rack portion and a connection that are connected Part, the rack part is movably arranged on the mounting plate, and is connected to the transmission gear, the connecting part is used to connect the camera; the motor drives the worm to rotate, and the worm rotates to drive the When the turbine rotates, the rotation of the turbine drives the rotation of the transmission gear, and the rotation of the transmission gear drives the movement of the connecting member, so that the camera is extended or retracted.
  • the motor is a direct drive motor
  • the output of the direct drive motor is drivingly connected to the worm
  • the moving direction of the connecting piece is parallel to the surface of the mounting plate
  • the output of the direct drive motor The axis of the part is parallel to the surface of the mounting plate.
  • the output part of the direct drive motor is provided with an installation groove, and one end of the worm is fixedly connected to the groove wall of the installation groove through a key.
  • the mounting plate is provided with a motor fixing seat, and the motor is mounted on the motor fixing seat.
  • the unfolding pitch angle of the worm is defined as ⁇
  • the friction angle of the contact between the turbine and the worm is ⁇ , ⁇ .
  • the camera telescopic device further includes a gear set, the input end of the gear set is drivingly connected to the transmission gear, and the output end of the gear set is drivingly connected to the rack part.
  • the gear set includes a first gear and a second gear, the first gear and the second gear are both rotatably arranged on the mounting plate, and the first gear is located on the back of the transmission gear.
  • the second gear is located on the side of the first gear facing away from the transmission gear;
  • the first gear includes a first sub-gear and a second sub-gear that are coaxially arranged and connected Gear, the diameter of the first sub-gear is greater than the diameter of the second sub-gear, and the second sub-gear is arranged close to the mounting plate;
  • the second gear includes a coaxially arranged and connected third sub-gear A gear and a fourth sub-gear, the diameter of the third sub-gear is smaller than the diameter of the fourth sub-gear, and the fourth sub-gear is arranged close to the mounting plate;
  • the transmission gear and the first sub-gear In meshing connection, the second sub-gear is meshingly connected with the fourth sub-gear, and the third sub-gear is
  • the camera telescopic device further includes a guide, the guide is installed on the mounting plate, and is provided with a guide groove, the opening of the guide groove is set toward the transmission gear, and along the connecting piece
  • the rack portion is movably accommodated in the guide groove, and the connecting portion is provided on the side of the rack portion away from the transmission gear, and penetrates the guide groove The side wall of the moving direction of the connecting piece is exposed.
  • the camera telescopic device further includes a cover, the cover is arranged on the mounting plate, and the cover, the mounting plate and the guide are enclosed to form an accommodating cavity, the The driving mechanism and the transmission gear are both arranged in the accommodating cavity.
  • the driving mechanism further includes a driving gear, the driving gear is sleeved on the output shaft of the motor; one end of the worm is sleeved with a connecting gear, and the connecting gear is in meshing connection with the driving gear.
  • the present invention also provides a mobile terminal.
  • the mobile terminal includes a camera and a camera telescopic device.
  • the camera telescopic device includes a mounting plate; a drive mechanism.
  • the drive mechanism includes a motor, a turbine, and a worm.
  • the motor is mounted on The mounting plate, the worm wheel and the worm are meshingly connected, the worm drive is connected to the output part of the motor; a transmission gear, the transmission gear is coaxially arranged and connected with the worm wheel; and a connecting piece
  • the connecting member includes a rack part and a connecting part that are connected, the rack part is movably arranged on the mounting plate and is in transmission connection with the transmission gear, and the connecting part is used to connect the camera;
  • the motor drives the worm to rotate, the worm rotation drives the turbine to rotate, the turbine rotation drives the transmission gear to rotate, and the transmission gear rotates to drive the connecting piece to move, so that the camera is extended or retracted;
  • the camera is connected to the connecting part
  • an elastic member is provided on a side of the camera facing the camera telescopic device, and the connecting portion is connected to an end of the elastic member away from the camera.
  • the drive mechanism adopts a motor, a turbine and a worm.
  • the turbine and worm are meshed and connected, and the worm is fixedly connected to the output part of the motor.
  • a transmission gear is provided.
  • the rack portion of the connecting piece is engaged and connected, and the connecting portion of the connecting piece is used for connecting the camera of the mobile terminal.
  • the technical scheme of the present invention adopts the transmission mode of the worm and gear to obtain a larger transmission ratio, and the meshing of the teeth of the worm and worm is in line contact, and the bearing capacity is higher.
  • the drive mechanism, transmission gears and connectors are all installed on the mounting plate, which not only ensures the installation stability of the drive mechanism, transmission gears and connectors, thereby ensuring the reliability of the telescopic operation of the camera, and the structure of each component is compact. , High transmission efficiency.
  • FIG. 2 is a schematic diagram of a partial structure of the connection between the camera telescopic device and the camera in the mobile terminal;
  • Figure 3 is a schematic diagram of the explosive structure of the camera telescopic device
  • Figure 4 is a schematic diagram of a partial structure of a camera telescopic device
  • Fig. 6 is a schematic cross-sectional view of the assembly of the turbine wheel and the transmission gear in the camera telescopic device
  • Fig. 7 is a partial structural diagram of another embodiment of the camera telescopic device of the present invention.
  • the camera telescopic device 100 includes: a mounting plate 10; a driving mechanism 20, the driving mechanism 20 includes a motor 21, a turbine 23 and a worm 22, and the motor 21 is installed On the mounting plate 10, the worm gear 23 and the worm 22 are meshed and connected, and the worm 22 is drivingly connected to the output part of the motor 21; a transmission gear 30, which is coaxially arranged and connected with the worm gear 23; and a connecting piece 70, which includes The rack portion 71 and the connecting portion 73 are connected.
  • the rack portion 71 is movably arranged on the mounting plate 10 and is in transmission connection with the transmission gear 30.
  • the connecting portion 73 is used to connect the camera 200; the motor 21 drives the worm 22 to rotate, and the worm
  • the rotation of 22 drives the rotation of the turbine 23
  • the rotation of the turbine 23 drives the rotation of the transmission gear 30, and the rotation of the transmission gear 30 drives the connection member 70 to move, so that the camera 200 is extended or retracted.
  • the mounting plate 10 is roughly in the shape of a flat plate, and the driving mechanism 20 includes a motor 21, a turbine 23 and a worm 22.
  • the motor 21 is generally mounted on the surface of the mounting plate 10.
  • the mounting method can be screw fixation, buckle fixation, or reasonable and Effective installation and fixing method; of course, the motor 21 can also be installed through the mounting plate 10.
  • the motor 21 can be a rotating motor 21, a flat motor 21, or other types of motors 21.
  • the axis of the output part of the motor 21 may be perpendicular to the surface of the mounting board 10 or parallel to the surface of the mounting board 10.
  • one end of the worm 22 is drivingly connected to the output part of the motor 21.
  • the worm 22 can be fixedly connected to the output shaft of the motor 21 through a coupling; if the output part is formed with a mounting groove, the worm 22 It can be directly inserted and fixed in the installation slot to realize the transmission connection between the two.
  • the turbine 23 is meshed and connected with the worm 22, so that the motor 21 drives the worm 22 to rotate to drive the turbine 23.
  • the transmission mode of the turbine 23 and the worm 22 can be used to obtain a larger transmission ratio, and the teeth of the turbine 23 and the worm 22 are in line contact.
  • the carrying capacity is relatively high.
  • the transmission gear 30 and the turbine 23 are arranged coaxially and connected to each other.
  • the motor 21 drives the worm 22 to rotate to drive the turbine 23 to rotate, the turbine 23 to rotate can drive the transmission gear 30 to rotate, and the transmission gear 30 to rotate can drive the connecting piece 70 to move, so that the camera 200 can telescopically move.
  • the moving direction can be parallel to the surface of the mounting board 10 or perpendicular to the surface of the mounting board 10, which is not limited here.
  • the camera 200 is located in the housing of the mobile terminal and hidden on the back of the screen. This can protect the camera 200 to avoid damage to the camera 200 due to collision or friction accidents. At the same time, the camera 200 does not need to reserve space for the camera 200. Increase the screen-to-body ratio of the mobile terminal.
  • the driving mechanism 20 When the camera 200 needs to be used, the driving mechanism 20 is activated to drive the transmission gear 30 to rotate, and the connecting member 70 is driven to move, so that the camera 200 protrudes out of the screen; when the use is completed, the driving mechanism 20 is activated again to drive the transmission gear 30 in reverse. It rotates and drives the connecting member 70 to move in the reverse direction, so that the camera 200 is retracted into the housing.
  • the motor 21 is mounted on the surface of the mounting board 10.
  • the first positioning sleeve 16 is sleeved on both ends of the first mounting shaft 13.
  • the drive mechanism 20 adopts the motor 21, the turbine 23 and the worm 22.
  • the turbine 23 and the worm 22 are meshed and connected, and the worm 22 is fixed to the output part of the motor 21, and a transmission gear 30 is provided at the same time.
  • the transmission gear 30 and the turbine 23 are coaxially arranged and connected.
  • the transmission gear 30 is meshed and connected with the rack portion 71 of the connecting member 70.
  • the connecting portion 73 of the connecting member 70 is used to connect the camera 200 of the mobile terminal.
  • the motor 21 drives the worm 22 to rotate, the worm 22 rotates to drive the turbine 23 to rotate, the turbine 23 rotates to drive the transmission gear 30 to rotate, and the transmission gear 30 rotates to drive the connecting member 70 to move, so that the camera 200 extends out of the screen.
  • the motor 21 drives the reverse drive worm 22 to rotate, and then drives the connecting member 70 to move in the reverse direction, so that the camera 200 is retracted into the housing and hidden on the back of the screen, so that the camera 200 can be protected to avoid
  • the camera 200 is damaged due to collision or friction accidents, and the screen does not have to reserve space for the camera 200, which can increase the screen-to-body ratio of the mobile terminal.
  • the technical solution of the present invention adopts the transmission mode of the worm 22 and the gear of the turbine 23, which can obtain a larger transmission ratio, and the meshing of the teeth of the worm 22 of the turbine 23 is in line contact, and the bearing capacity is relatively high.
  • the driving mechanism 20, the transmission gear 30 and the connecting piece 70 are all installed on the mounting plate 10, which not only ensures the installation stability of the driving mechanism, the transmission gear 30 and the connecting piece 70, thereby ensuring the reliability of the telescopic operation of the camera 200 , And each component has a compact structure and high transmission efficiency.
  • the motor 21 is a direct drive motor
  • the output of the direct drive motor is connected to the worm 22 in transmission
  • the moving direction of the connecting piece 70 is parallel to the surface of the mounting plate 10
  • the axis of the output of the direct drive motor is parallel to the mounting plate 10. s surface.
  • the motor 21 is a direct drive motor, which has a small volume, is convenient for installation and operation, and can relatively reduce the overall volume of the camera telescopic device 100.
  • the direct drive motor includes a fixed part and an output part.
  • the fixed part is mounted on the surface of the mounting plate 10, the output part is rotatably connected to the fixed part, and one end of the worm 22 is fixedly connected to the output part, so that the direct drive motor can drive the worm 22 transmission.
  • the moving direction of the connecting piece 70 is parallel to the surface of the mounting plate 10, and the axis of the output part of the direct drive motor is also parallel to the surface of the mounting plate 10. This arrangement can effectively reduce the size of the camera telescopic device 100, thus effectively Reduce the thickness of the mobile terminal.
  • this arrangement can make the structure of each part more compact to ensure higher transmission efficiency.
  • the axis of the output part of the direct drive motor may be perpendicular to the moving direction of the connecting member 70, of course, it may also be parallel to the moving direction of the connecting member 70, which is not limited here.
  • the output part of the direct drive motor is provided with a mounting groove (not labeled), and one end of the worm 22 is fixed to the groove wall of the mounting groove through a key.
  • the inner wall surface of the installation groove may be provided with a key groove, and one end surface of the worm 22 is provided with a key protrudingly, so that the worm 22 is inserted into the installation groove and can be fitted with the key and the key groove.
  • the connection method adopts the key fixation method, which is simple and effective.
  • the connection method of the two can also adopt other interference tight fixation methods, which will not be repeated here.
  • the mounting plate 10 is provided with a motor fixing seat 11, and the motor 21 is mounted on the motor fixing seat 11.
  • the motor fixing base 11 is fixedly installed on the surface of the mounting plate 10, and the fixed installation method can be welding, screw connection or other reasonable and effective connection methods.
  • the motor 21 is fixedly installed on the motor 21 mounting base to ensure the installation stability of the motor 21 .
  • the motor 21 is a direct-drive motor.
  • the fixing base can be a flat plate.
  • the surface of the fixing base is perpendicular to the surface of the mounting plate 10.
  • the fixing base is provided with fixing holes.
  • the fixing part of the direct-drive motor is provided with a connecting hole corresponding to it.
  • the fixing part of the direct-drive motor is fixed to the fixing seat by the cooperation of the fixing hole and the connecting hole, such as a screw, so that the fixed installation of the direct-drive motor can be realized.
  • the fixing base can also be of other reasonable structures, as long as it can serve as a fixed installation of the motor 21.
  • the mounting plate 10 is provided with a bearing mounting seat 12, a bearing (not shown) is sleeved at one end of the worm 22 away from the motor 21, and the bearing is mounted on the bearing mounting seat 12.
  • the bearing mount 12 is arranged on the surface of the mounting plate 10 facing the motor mount 11 and is in the same straight line with the motor mount 11.
  • the end of the worm 22 away from the motor 21 is sleeved with a bearing, and the bearing is mounted on the bearing mount 12, so that the worm 22 can be supported to ensure the stability of the worm 22 during the rotation process.
  • the shape of the fixing member 31 here can also be other reasonable structures, and the connecting groove 231 may also be a plurality of connecting grooves 231 spaced along the circumferential direction of the turbine 23.
  • the fixing member 31 is also provided with a plurality of connections. The cooperation of the groove 231 and a fixing member 31 can also realize the fixed connection between the transmission gear 30 and the turbine 23.
  • the unfolding pitch angle of the worm 22 is ⁇
  • the friction angle of the contact between the turbine 23 and the worm 22 is ⁇ , ⁇ .
  • the camera telescopic device 100 further includes a gear set 40, the input end of the gear set 40 is drivingly connected to the transmission gear 30, and the output end of the gear set 40 is drivingly connected to the rack portion 71.
  • a gear set 40 is also provided.
  • the input end of the gear set 40 is drivingly connected to the transmission gear 30, and the output end is drivingly connected to the rack portion 71, so that the transmission gear 30 drives the teeth through the gear set 40
  • the strip 71 rotates to reduce speed.
  • the gear set 40 here is an involute cylindrical gear set 40, which has good torque transmission performance, can improve the smoothness of the camera 200's lifting movement, and can effectively avoid the occurrence of gear rotation errors and gear tilt errors. Related issues such as stalling and instability.
  • the gear set 40 here is a small-modulus gear set 40, which has the characteristics of small volume, high load-bearing capacity, large output torque, and can reduce the load inertia, increase the coincidence degree, and reduce the sliding coefficient.
  • the sub-gear 422 is in meshing connection, and the third sub-gear 421 is in meshing connection with the rack portion 71.
  • the first gear 41 and the second gear 42 are both press-fitted gears, that is, the first sub-gear 411 and the second sub-gear 412 are assembled into the first gear 41, the third sub-gear 421, and the fourth sub-gear 421 through a shoulder interference fit.
  • the sub-gear 422 is transformed into the second gear 42 through the shoulder interference fit.
  • both the first gear 41 and the second gear 42 adopt press-fit gears, which have high bending strength, can simplify the assembly process, and compress the volume of the camera extension and contraction device 100.
  • the gear set 40 of the first gear 41 and the second gear 42 is used for transmission, which can reduce the movement of the connecting member 70 to ensure that the movement of the connecting member 70 is relatively smooth, thereby ensuring that the telescopic process of the camera 200 is relatively smooth.
  • the installation method of the first sub-gear 411 and the second sub-gear 412 is as follows: the surface of the mounting plate 10 facing the motor 21 is provided with a mounting hole (not marked), and the second mounting shaft 14 is installed in the mounting hole. Ground, the end of the second mounting shaft 14 is welded to the wall of the mounting hole, so that the mounting stability of the second mounting shaft 14 can be ensured.
  • the first sub-gear 411 and the second sub-gear 412 are sleeved on the second mounting shaft 14 as a press-fitted large and small gear, and can rotate around the second mounting shaft 14.
  • the first sub-gear 411 rotates under the transmission of the transmission gear 30, and the second sub-gear 412 rotates together with the first sub-gear 411.
  • the installation of the third sub-gear 421 and the fourth sub-gear 422 is similar to the installation of the first sub-gear 411 and the second sub-gear 412, that is, the surface of the mounting plate 10 is also provided with a third mounting shaft 15, and The third sub-gear 421 and the fourth sub-gear 422 are sleeved on the third mounting shaft 15 as a press-fitting gear, and rotate around the third mounting shaft 15 at the same time.
  • an axial positioning member is provided at the end of the corresponding installation shaft, and the axial positioning member may be a sleeve.
  • the gear will not have a large axial movement during the rotation process, thereby ensuring the reliability and stability of the gear transmission process.
  • a second positioning sleeve 17 is sleeved on both ends of the second mounting shaft 14, and a third positioning sleeve 18 is sleeved on both ends of the third mounting shaft 15.
  • the camera telescopic device 100 further includes a guide 50 installed on the mounting plate 10 and provided with a guide groove 51.
  • the opening of the guide groove 51 is set toward the transmission gear 30 and moves along the connecting member 70.
  • the rack portion 71 is movably accommodated in the guide groove 51, and the connecting portion 73 is provided on the side of the rack portion 71 away from the transmission gear 30, and penetrates the side of the guide groove 51 along the moving direction of the connecting piece 70 The wall is revealed.
  • the guide member 50 is disposed on one side of the mounting plate 10 and is provided with a guide groove 51 facing the gear set 40.
  • the guide groove 51 has a length direction and extends along the moving direction of the connecting member 70.
  • the connecting portion 73 is substantially in the shape of a long rod.
  • the gear portion is provided on the side of the connecting portion 73 facing the gear set 40.
  • the guide 50 is provided with through holes 53 communicating with the guide groove 51 at opposite ends of the guide 50 along the moving direction of the connecting member 70.
  • the connecting member 70 passes through the through hole 53 and can move in the guide groove 51.
  • the setting of the guide member 50 plays a role of guiding and limiting the movement process of the connecting member 70, so as to ensure that the movement process of the camera 200 is smoother and more reliable.
  • the camera telescopic device 100 further includes a cover 60, the cover 60 is disposed on the mounting plate 10, and the cover 60, the mounting plate 10, and the guide 50 are enclosed to form a accommodating cavity, and a driving mechanism 20 and the transmission gear 30 are both arranged in the accommodating cavity.
  • the cover 60 is disposed on the surface of the mounting plate 10 facing the driving mechanism 20, and the connection between the two may be a snap connection, a screw connection, or other reasonable and effective connection methods.
  • the cover 60 defines a first fixing hole 61 corresponding to the first mounting shaft 13, a second fixing hole 62 corresponding to the second mounting shaft 14, and a third fixing hole 63 corresponding to the third mounting shaft 15.
  • the end of the mounting shaft 13 away from the mounting plate 10 is inserted and fixed in the first fixing hole 61.
  • the first positioning sleeves 16 sleeved at both ends of the first mounting shaft 13 abut against the mounting plate 10 and the cover 60, respectively. This can ensure the axial positioning of the transmission gear 30 and the turbine 23 during the rotation process.
  • the end of the second mounting shaft 14 facing away from the mounting plate 10 is inserted and fixed in the second fixing hole 62.
  • the second positioning sleeves 17 sleeved at both ends of the second mounting shaft 14 abut against the mounting plate 10 and The cover 60 can ensure the axial positioning of the transmission first gear 41 during the rotation process.
  • the end of the third mounting shaft 15 away from the mounting plate 10 is inserted and fixed in the third fixing hole 63.
  • the third positioning sleeves 18 sleeved at both ends of the third mounting shaft 15 abut against the mounting plate 10 and the cover 60, respectively. In this way, the axial positioning of the second transmission gear 42 during the rotation process can be ensured.
  • the driving mechanism 20 further includes a driving gear 24, which is sleeved on the output shaft of the motor 21; one end of the worm 22 is sleeved with a connecting gear 25 ,
  • the connecting gear 25 is in meshing connection with the driving gear 24.
  • the motor 21 and the worm 22 adopt a meshing connection gear 25 and a driving gear 24 for transmission, which can further optimize the transmission ratio of the entire transmission mechanism and further ensure the smoothness of the movement of the camera 200.
  • the present invention also proposes a mobile terminal.
  • the mobile terminal includes a camera 200 and the aforementioned telescopic camera device 100.
  • the camera 200 is connected to the connecting portion 73 of the connector 70 of the camera telescopic device 100;
  • For the specific structure of the camera telescopic device 100 refer to the foregoing embodiment. Since all the technical solutions of all the foregoing embodiments are adopted, it has at least all the beneficial effects brought about by the technical solutions of the foregoing embodiments, which will not be repeated here.
  • the mobile terminal includes a housing (not shown).
  • the camera telescopic device 100 is provided in the housing and located on the back of the screen.
  • the camera 200 is also located on the back of the screen in the housing and connected to the connector 70 of the camera telescopic device 100.
  • the motor 21 drives the worm 22 to rotate
  • the worm 22 rotates to drive the turbine 23 to rotate
  • the turbine 23 to rotate drives the transmission gear 30 to rotate.
  • the camera 200 reserves space, and the mobile terminal has a relatively high screen-to-body ratio.
  • an elastic member 210 is provided on the side of the camera 200 facing the camera telescopic device 100, and the connecting portion 73 is connected to an end of the elastic member 210 away from the camera 200.
  • the elastic member 210 is a pre-compressed spring, one end of the spring is fixedly connected to the side of the camera 200 facing the camera telescopic device 100, and the other end of the spring is connected to the connecting portion 73.
  • the elastic member 210 can not only transmit the expansion and contraction power, but also can buffer the camera 200 when it is impacted during the expansion and contraction process.
  • the end of the connecting portion 73 facing the camera 200 is provided with a connecting boss 731, and the end of the spring away from the camera 200 is connected to the table surface of the connecting boss 731.
  • the connection method is generally welding, which can also ensure that the connection is stable. Sex.
  • the camera 200 is correspondingly provided with a mounting tube (not shown), the spring 21 is installed in the mounting tube, and one end of the spring is connected to the bottom wall of the mounting tube, and the other end is connected to the connecting boss 731, this can make the structure more compact and the transmission efficiency higher.
  • the elastic member 210 here can also be other elastic objects to serve as a buffer.

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  • Signal Processing (AREA)
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Abstract

本申请公开一种摄像头伸缩装置和应用该摄像头伸缩装置的移动终端。其中，所述摄像头伸缩装置包括：安装板；驱动机构，驱动机构包括电机、涡轮和蜗杆，电机安装于安装板，涡轮和蜗杆啮合连接，蜗杆传动连接于电机的输出部；传动齿轮，传动齿轮与涡轮同轴设置且相连接；以及连接件，连接件包括相连接的齿条部和连接部，齿条部可移动地设于安装板，并与传动齿轮传动连接，连接部用以连接摄像头；电机驱动蜗杆转动，蜗杆转动带动涡轮转动，涡轮转动带动传动齿轮转动，传动齿轮转动带动连接件移动，以使得摄像头伸出或缩回。本申请的技术方案能够实现移动终端中摄像头的伸缩，从而增大移动终端的屏占比。

Description

摄像头伸缩装置和移动终端 技术领域
本发明涉及移动终端摄像头技术领域，特别涉及一种摄像头伸缩装置和应用该摄像头伸缩装置的移动终端。
背景技术
随着消费者对智能移动终端的品质、技术及外观的要求越来越高，智能移动终端高屏占比已成为重要的发展方向。为了提高智能终端的高屏占比，通常将摄像头设置为可伸缩结构，常态下，摄像头位于移动终端壳体内并隐藏于屏幕的背面，当需要使用摄像头时，将摄像头伸出屏幕之外，使用完成后再将摄像头缩回壳体内，这样摄像头不占用屏幕的空间，可以实现高屏占比。因此，合理地设计摄像头可伸缩结构对于实现移动终端的高屏占比来说是极其重要的。
上述内容仅用于辅助理解本发明的技术方案，并不代表承认上述内容是现有技术。
发明内容
本发明的主要目的是提供一种摄像头伸缩装置和移动终端，旨在实现移动终端中摄像头的伸缩，从而增大移动终端的屏占比。
为实现上述目的，本发明提出的摄像头伸缩装置，包括：安装板；驱动机构，所述驱动机构包括电机、涡轮和蜗杆，所述电机安装于所述安装板，所述涡轮和所述蜗杆啮合连接，所述蜗杆传动连接于所述电机的输出部；传动齿轮，所述传动齿轮与所述涡轮同轴设置且相连接；以及连接件，所述连接件包括相连接的齿条部和连接部，所述齿条部可移动地设于所述安装板，并与所述传动齿轮传动连接，所述连接部用以连接摄像头；所述电机驱动所述蜗杆转动，所述蜗杆转动带动所述涡轮转动，所述涡轮转动带动所述传动齿轮转动，所述传动齿轮转动带动所述连接件移动，以使得摄像头伸出或缩 回。
可选地，所述电机为直驱马达，所述直驱马达的输出部传动连接于所述蜗杆，所述连接件的移动方向与所述安装板的表面平行，所述直驱马达的输出部的轴线平行于所述安装板的表面。
可选地，所述直驱马达的输出部设置有安装槽，所述蜗杆的一端通过键固接于所述安装槽的槽壁。
可选地，所述安装板设置有电机固定座，所述电机安装于所述电机固定座。
可选地，所述安装板设置有轴承安装座，所述蜗杆远离所述电机的一端套设有轴承，所述轴承安装于所述轴承安装座；和/或，所述涡轮的内圈设置有连接槽，所述传动齿轮朝向所述涡轮的一侧设置有固定件，所述固定件插接于所述连接槽内。
可选地，定义蜗杆的展开螺距角为β，所述涡轮和所述蜗杆接触的摩擦角为Φ，β＜Φ。
可选地，所述摄像头伸缩装置还包括齿轮组，所述齿轮组的输入端传动连接于所述传动齿轮，所述齿轮组的输出端传动连接于所述齿条部。
可选地，所述齿轮组包括第一齿轮和第二齿轮，所述第一齿轮和所述第二齿轮均可转动地设于所述安装板，所述第一齿轮位于所述传动齿轮背向所述蜗杆的一侧，所述第二齿轮位于所述第一齿轮背向所述传动齿轮的一侧；所述第一齿轮包括同轴设置且相连接的第一子齿轮和第二子齿轮，所述第一子齿轮的直径大于所述第二子齿轮的直径，且所述第二子齿轮靠近所述安装板设置；所述第二齿轮包括同轴设置且相连接的第三子齿轮和第四子齿轮，所述第三子齿轮的直径小于所述第四子齿轮的直径，且所述第四子齿轮靠近所述安装板设置；所述传动齿轮与所述第一子齿轮啮合连接，所述第二子齿轮与所述第四子齿轮啮合连接，所述第三子齿轮与所述齿条部啮合连接。
可选地，所述摄像头伸缩装置还包括导向件，所述导向件安装于所述安装板，并设有导向槽，所述导向槽的开口朝向所述传动齿轮设置，且沿所述连接件的移动方向延伸设置，所述齿条部可移动地容置于所述导向槽内，所述连接部设于所述齿条部背离所述传动齿轮的一侧，并贯穿所述导向槽沿所述连接件之移动方向的侧壁而显露。
可选地，所述摄像头伸缩装置还包括罩壳，所述罩壳罩设于所述安装板，且所述罩壳、所述安装板及所述导向件围合形成容置腔，所述驱动机构和所述传动齿轮均设于所述容置腔内。
可选地，所述驱动机构还包括驱动齿轮，所述驱动齿轮套接于所述电机的输出轴；所述蜗杆的一端套设有连接齿轮，所述连接齿轮与所述驱动齿轮啮合连接。
本发明还提出了一种移动终端，所述移动终端包括摄像头和摄像头伸缩装置，所述摄像头伸缩装置包括：安装板；驱动机构，所述驱动机构包括电机、涡轮和蜗杆，所述电机安装于所述安装板，所述涡轮和所述蜗杆啮合连接，所述蜗杆传动连接于所述电机的输出部；传动齿轮，所述传动齿轮与所述涡轮同轴设置且相连接；以及连接件，所述连接件包括相连接的齿条部和连接部，所述齿条部可移动地设于所述安装板，并与所述传动齿轮传动连接，所述连接部用以连接摄像头；所述电机驱动所述蜗杆转动，所述蜗杆转动带动所述涡轮转动，所述涡轮转动带动所述传动齿轮转动，所述传动齿轮转动带动所述连接件移动，以使得摄像头伸出或缩回；所述摄像头连接于所述摄像头伸缩装置的连接件的连接部。
可选地，所述摄像头朝向所述摄像头伸缩装置的一侧设置有弹性件，所述连接部连接于所述弹性件远离所述摄像头的一端。
本发明的技术方案，驱动机构采用电机、涡轮和蜗杆，涡轮蜗杆啮合连接，并蜗杆固接于电机的输出部，同时设置传动齿轮，传动齿轮与涡轮同轴设置且相连接，传动齿轮与连接件的齿条部啮合连接，连接件的连接部用以连接移动终端的摄像头。如此，当需要使用摄像头时，电机驱动蜗杆转动，蜗杆转动带动涡轮转动，涡轮转动带动传动齿轮转动，传动齿轮转动带动连接件移动，以使得摄像头伸出屏幕之外；当使用完成后，电机驱动反向驱动蜗杆转动，进而带动连接件反向移动，以使得摄像头缩回壳体内并隐藏于屏幕的背面，这样可以保护摄像头，以避免因碰撞或摩擦意外情况导致摄像头发生损坏，且屏幕不必为摄像头预留空间，可以增大移动终端的屏占比。本发明的技术方案，采用涡轮蜗杆及齿轮的传动方式，能够得到较大的传动比，且涡轮蜗杆的齿啮合为线接触，承载能力较高。并且，将驱动机构、传 动齿轮及连接件均安装于安装板，这样不仅能够保证驱动机构、传动齿轮及连接件的安装稳固性，从而保证了摄像头伸缩操作的可靠性，而且各零部件结构紧凑，传动效率高。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术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示出的结构获得其他的附图。
图1为本发明移动终端中摄像头伸缩装置与摄像头装配后一实施例的结构示意图；
图2为移动终端中摄像头伸缩装置与摄像头连接的局部结构示意图；
图3为摄像头伸缩装置的爆炸结构示意图；
图4为摄像头伸缩装置的局部结构示意图；
图5为摄像头伸缩装置中驱动机构有一视角的结构示意图；
图6为摄像头伸缩装置中涡轮与传动齿轮装配后的剖视结构示意图；
图7为本发明摄像头伸缩装置另一实施例的局部结构示意图。
附图标号说明：
标号 名称 标号 名称
100 摄像头伸缩装置 41 第一齿轮
10 安装板 411 第一子齿轮
11 电机固定座 412 第二子齿轮
12 轴承安装座 42 第二齿轮
13 第一安装轴 421 第三子齿轮
14 第二安装轴 422 第四子齿轮
15 第三安装轴 50 导向件
16 第一定位套 51 导向槽
17 第二定位套 53 贯穿孔
18 第三定位套 60 罩壳
20 驱动机构 61 第一固定孔
21 电机 62 第二固定孔
22 蜗杆 63 第三固定孔
23 涡轮 70 连接件
231 连接槽 71 齿条部
24 驱动齿轮 73 连接部
25 连接齿轮 731 连接凸台
30 传动齿轮 200 摄像头
31 固定件 210 弹性件
40 齿轮组    
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
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作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明，本发明实施例中所有方向性指示(诸如上、下、左、右、前、后……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，在本发明中如涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个 等，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“连接”、“固定”等应做广义理解，例如，“固定”可以是固定连接，也可以是可拆卸连接，或成一体；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或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
另外，本发明各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
本发明提出一种摄像头伸缩装置100，应用于移动终端。
请参阅图1至图3，在本发明摄像头伸缩装置100一实施例中，摄像头伸缩装置100包括：安装板10；驱动机构20，驱动机构20包括电机21、涡轮23和蜗杆22，电机21安装于安装板10，涡轮23和蜗杆22啮合连接，蜗杆22传动连接于电机21的输出部；传动齿轮30，传动齿轮30与涡轮23同轴设置且相连接；以及连接件70，连接件70包括相连接的齿条部71和连接部73，齿条部71可移动地设于安装板10，并与传动齿轮30传动连接，连接部73用以连接摄像头200；电机21驱动蜗杆22转动，蜗杆22转动带动涡轮23转动，涡轮23转动带动传动齿轮30转动，传动齿轮30转动带动连接件70移动，以使得摄像头200伸出或缩回。
具体地，安装板10大致呈平板状，驱动机构20包括电机21、涡轮23和蜗杆22，电机21一般是安装于安装板10的表面，其安装方式可以是螺钉固定、卡扣固定或者合理且有效的安装固定方式；当然地电机21也可以是贯穿安装板10设置。这里电机21可以选用旋转电机21、扁平电机21、或者其他类型的电机21。电机21的输出部的轴线可以是垂直于安装板10的板面，也可以是平行于安装板10的板面设置。一般地，蜗杆22的一端传动连接于电机21的输出部，若输出部为输出轴时，蜗杆22可以通过联轴器固定连接于电机21的输出轴；若输出部形成有安装槽，蜗杆22可以直接插接固 定于安装槽内，以实现二者的传动连接。涡轮23与蜗杆22啮合连接，这样电机21驱动蜗杆22转动可以带动涡轮23带动，这里采用涡轮23蜗杆22的传动方式，能够得到较大的传动比，且涡轮23蜗杆22的齿啮合为线接触，承载能力较高。传动齿轮30与涡轮23同轴设置并相互连接，其安装方式可以是，安装板10的表面固设有第一安装轴13，第一安装轴13垂直于安装板10的板面设置，传动齿轮30和涡轮23固定连接后作为一个整体套设于第一安装轴13，并可绕第一安装轴13发生转动。传动齿轮30位于涡轮23背向安装板10的一侧，并传动连接于连接件70的齿条部71，连接件70的连接部73用以连接摄像头200。如此的设置，电机21驱动蜗杆22转动可以带动涡轮23转动，涡轮23转动可以带动传动齿轮30转动，传动齿轮30转动可以带动连接件70移动，以使得摄像头200作伸缩移动，这里连接件70的移动方向可以是平行于安装板10的板面，也可以是垂直于安装板10的板面，在此不作限制。常态下，摄像头200位于移动终端的壳体内并隐藏于屏幕的背面，这样可以保护摄像头200，以避免因碰撞或摩擦意外情况导致摄像头200发生损坏，同时摄像头200不必为摄像头200预留空间，可以增大移动终端的屏占比。当需要使用摄像头200时，启动驱动机构20带动传动齿轮30转动，并带动连接件70移动，以使得摄像头200伸出屏幕之外；当使用完成后，再次启动驱动机构20反向带动传动齿轮30转动，并带动连接件70反向移动，以使得摄像头200缩回壳体内。
需要说明的是，为了方便电机21的安装，且简化安装板10的设计，一般地，将电机21安装于安装板10的表面。为了保证传动齿轮30和涡轮23转动过程中不会沿第一安装轴13的轴向发生较大移动，则在第一安装轴13的两端均套设有第一定位套16。
因此，可以理解的，本发明的技术方案，驱动机构20采用电机21、涡轮23和蜗杆22，涡轮23蜗杆22啮合连接，并蜗杆22固接于电机21的输出部，同时设置传动齿轮30，传动齿轮30与涡轮23同轴设置且相连接，传动齿轮30与连接件70的齿条部71啮合连接，连接件70的连接部73用以连接移动终端的摄像头200。如此，当需要使用摄像头200时，电机21驱动蜗杆22转动，蜗杆22转动带动涡轮23转动，涡轮23转动带动传动齿轮30转动，传动齿轮30转动带动连接件70移动，以使得摄像头200伸出屏幕之 外；当使用完成后，电机21驱动反向驱动蜗杆22转动，进而带动连接件70反向移动，以使得摄像头200缩回壳体内并隐藏于屏幕的背面，这样可以保护摄像头200，以避免因碰撞或摩擦意外情况导致摄像头200发生损坏，且屏幕不必为摄像头200预留空间，可以增大移动终端的屏占比。本发明的技术方案，采用涡轮23蜗杆22及齿轮的传动方式，能够得到较大的传动比，且涡轮23蜗杆22的齿啮合为线接触，承载能力较高。并且，将驱动机构20、传动齿轮30及连接件70均安装于安装板10，这样不仅能够保证驱动机构、传动齿轮30及连接件70的安装稳固性，从而保证了摄像头200伸缩操作的可靠性，而且各零部件结构紧凑，传动效率高。
可选地，电机21为直驱马达，直驱马达的输出部传动连接于蜗杆22，连接件70的移动方向与安装板10的表面平行，直驱马达的输出部的轴线平行于安装板10的表面。
这里电机21选用直驱马达，直驱马达体积较小，便于安装操作，且能够相对减小摄像头伸缩装置100的整体体积。直驱马达包括固定部和输出部，固定部安装于安装板10的表面，输出部可转动地连接于固定部，蜗杆22的一端固定连接于该输出部，这样便可直驱马达带动蜗杆22传动。连接件70移动方向平行于安装板10的板面，直驱马达的输出部的轴线也平行于安装板10的板面，这样的设置，可以有效地减小摄像头伸缩装置100的尺寸，从而有效降低移动终端的厚度。同时这样的设置可以使得各个零件结构更加紧凑，以保证传动效率较高。需要说明的是，这里直驱马达的输出部的轴线可以是垂直于连接件70的移动方向，当然也可以是平行于连接件70的移动方向，在此不作限定。
进一步地，直驱马达的输出部设置有安装槽(未标示)，蜗杆22的一端通过键固接于安装槽的槽壁。
具体地，安装槽设置于输出部的中部，且安装槽的内壁面凸设有键，蜗杆22的一端表面设置有键槽，装配时，蜗杆22的端部插设于安装槽内，并通过键和键槽的配合固定连接于安装槽的槽壁，这样便可实现蜗杆22与直驱马达输出部的固定连接。当然地，在其他一些实施例实施中，可以是安装槽的内壁面开设有键槽，蜗杆22的一端表面凸设有键，这样蜗杆22插设于安装槽内并通过键和键槽的配合也能实现二者的固定连接。该连接方式采用 键固定方式，操作简单且有效，当然地，二者的连接方式也可以采用其他的过盈紧固定的方式，在此不再一一赘述。
进一步地，请再次参阅图3，安装板10设置有电机固定座11，电机21安装于电机固定座11。电机固定座11固定安装于安装板10的表面，其固定安装方式可以焊接、螺钉连接或其他合理且有效的连接方式，电机21固定安装于该电机21安装座，以保证电机21的安装稳定性。这里电机21选用直驱马达，固定座可以是平板状，其板面垂直于安装板10的板面，固定座的表面开设有固定孔，直驱马达的固定部对应开设有连接孔，通过紧固件(如螺钉)与固定孔及连接孔的配合将直驱马达固定部固定于固定座，如此便可实现直驱马达的固定安装。当然地，固定座也可以为其他合理的结构，只要能起到固定安装电机21的作用即可。
进一步地，安装板10设置有轴承安装座12，蜗杆22远离电机21的一端套设有轴承(未图示)，轴承安装于轴承安装座12。这里轴承安装座12设置于安装板10面向电机固定座11的表面，并与电机固定座11处于同一直线。蜗杆22远离电机21的一端套设有轴承，轴承安装该轴承安装座12，这样可以对蜗杆22起到支撑，以保证蜗杆22转动过程的稳定性。这里轴承安装座12可以为平板状，其板面垂直于安装板10的板面，轴承的外圈可以通过螺钉固定连接于轴承安装座12。当然地，这里轴承安装座12也可以为其他形状的结构，只要能起到固定安装轴承的作用即可。
进一步地，请参阅图4至图6，涡轮23的内圈设置有连接槽231，传动齿轮30朝向涡轮23的一侧设置有固定件31，固定件31插接于连接槽231内。这里连接槽231可以为环形槽，固定件31可以是套筒结构，凸设于传动齿轮30的一侧，并与传动齿轮30同轴设置，固定件31远离传动齿轮30的一端插接固定于连接槽231的内壁，如此便可实现传动齿轮30与涡轮23的固定连接，这样涡轮23转动带动传动齿轮30转动。当然地，这里固定件31的形状也可以为其他合理的结构，连接槽231也可以是多个沿涡轮23周向间隔的连接槽231，对应地固定件31也设置有多个，每一连接槽231和一固定件31的配合也能实现传动齿轮30与涡轮23的固定连接。
进一步，定义蜗杆22的展开螺距角为β，涡轮23和蜗杆22接触的摩擦角为Φ，β＜Φ。这样便可满足涡轮23蜗杆22啮合自锁的传动特性，即只能 是蜗杆22转动带动涡轮23转动，而不能是涡轮23转动带动蜗杆22转动，该自锁性可对摄像头200的升降操作起到保护作用，保证其升降操作的稳定性。
进一步地，请再次参阅图3和图4，摄像头伸缩装置100还包括齿轮组40，齿轮组40的输入端传动连接于传动齿轮30，齿轮组40的输出端传动连接于齿条部71。
为了对齿条输出起到减速作用，还设置齿轮组40，齿轮组40的输入端传动连接于传动齿轮30，且输出端传动连接于齿条部71，这样传动齿轮30通过齿轮组40带动齿条部71转动，以起到减速作用。需要说明的是，这里齿轮组40为渐开线圆柱齿轮组40，传递力矩性能较好，能够提高摄像头200升降移动的平稳性，且能有效地避免出现齿轮回转误差、齿轮倾斜误差时导致的失速、失稳等相关问题。并且，这里齿轮组40为小模数齿轮组40，具有体积较小，承载能力较高，输出扭矩较大，且能降低负载惯量、增大重合度、减小滑动系数等特性。
请再次参阅图3和图4，齿轮组40包括第一齿轮41和第二齿轮42，第一齿轮41和第二齿轮42均可转动地设于安装板10，第一齿轮41位于传动齿轮30背向蜗杆22的一侧，第二齿轮42位于第一齿轮41背向传动齿轮30的一侧；第一齿轮41包括同轴设置且相连接的第一子齿轮411和第二子齿轮412，第一子齿轮411的直径大于第二子齿轮412的直径，且第二子齿轮412靠近安装板10设置；第二齿轮42包括同轴设置且相连接的第三子齿轮421和第四子齿轮422，第三子齿轮421的直径小于第四子齿轮422的直径，且第四子齿轮422靠近安装板10设置；传动齿轮30与第一子齿轮411啮合连接，第二子齿轮412与第四子齿轮422啮合连接，第三子齿轮421与齿条部71啮合连接。如此的设置，零部件结构设置更加紧凑，传动效率较高，且整体占用空间较小。这里第一齿轮41和第二齿轮42均为压装大小齿轮，即第一子齿轮411和第二子齿轮412通过轴肩过盈配合装配成第一齿轮41，第三子齿轮421和第四子齿轮422通过轴肩过盈配合转配成第二齿轮42，如此，便可实现第一子齿轮411和第二子齿轮412同时发生转动，第三子齿轮421和第四子齿轮422同时发生转动。这里第一齿轮41和第二齿轮42均采用压装齿轮，其抗弯强度较高，且能够简化装配工艺，压缩摄像头伸 缩装置100的体积。这里采用第一齿轮41和第二齿轮42的齿轮组40传动，可以连接件70的移动过程起到减速作用，以保证连接件70的移动过程较为平缓，从而保证摄像头200的伸缩过程较为平缓。需要说明是，这里第一子齿轮411和第二子齿轮412的安装方式为：安装板10面向电机21的表面开设有安装孔(未标示)，安装孔内安装有第二安装轴14，一般地，第二安装轴14的端部焊接于安装孔的孔壁，这样可以保证第二安装轴14的安装稳固性。第一子齿轮411和第二子齿轮412作为一个压装大小齿轮套设于第二安装轴14，并可绕第二安装轴14发生转动。如此，第一子齿轮411在传动齿轮30的传动下转动，第二子齿轮412随第一子齿轮411一起转动。同样地，第三子齿轮421和第四子齿轮422的安装方式类似于第一子齿轮411和第二子齿轮412的安装方式，即安装板10的表面还设置有第三安装轴15，第三子齿轮421和第四子齿轮422作为一个压装齿轮套设于第三安装轴15，并同时绕第三安装轴15发生转动。
进一步地，为了保证第一齿轮41和第二齿轮42在转动过程中不会沿轴向移动，一般地，在对应的安装轴端部设置有轴向定位件，轴向定位件可以为套筒，这样可以保证齿轮在转动过程不会发生较大的轴向移动，从而保证齿轮传动过程的可靠性和稳定性。具体地，在第二安装轴14的两端均套设有第二定位套17，在第三安装轴15的两端均套设有第三定位套18。
请再次参阅图3，摄像头伸缩装置100还包括导向件50，导向件50安装于安装板10，并设有导向槽51，导向槽51的开口朝向传动齿轮30设置，且沿连接件70的移动方向延伸设置，齿条部71可移动地容置于导向槽51内，连接部73设于齿条部71背离传动齿轮30的一侧，并沿连接件70的移动方向贯穿导向槽51的侧壁而显露。
具体地，导向件50设置于安装板10的一侧，并朝向齿轮组40开设有导向槽51，导向槽51具有长度方向，沿连接件70的移动方向延伸。连接部73大致呈长杆状，齿轮部设于连接部73朝向齿轮组40的一侧，其导向件50沿连接件70的移动方向之相对两端均开设有连通导向槽51的贯穿孔53，连接件70穿过贯穿孔53并可在导向槽51内移动。导向件50的设置对连接件70的移动过程起到引导和限位作用，以保证摄像头200的移动过程更加顺畅和可靠。
请再次参阅图1和图3，摄像头伸缩装置100还包括罩壳60，罩壳60罩设于安装板10，且罩壳60、安装板10及导向件50围合形成容置腔，驱动机构20和传动齿轮30均设于容置腔内。
具体地，罩壳60罩设于安装板10面向驱动机构20的表面，二者的连接方式可以是卡扣连接、螺钉连接或者其他合理且有效的连接方式。罩壳60对应第一安装轴13开设有第一固定孔61，对应第二安装轴14开设有第二固定孔62，对应第三安装轴15开设有第三固定孔63，装配时，第一安装轴13背离安装板10的一端插接固定于第一固定孔61内，这时套设于第一安装轴13两端的第一定位套16分别抵接于安装板10和罩壳60，这样便可保证传动齿轮30和涡轮23转动过程的轴向定位。同样地，第二安装轴14背离安装板10的一端插接固定于第二固定孔62内，这时套设于第二安装轴14两端的第二定位套17分别抵接于安装板10和罩壳60，这样便可保证传动第一齿轮41转动过程的轴向定位。第三安装轴15背离安装板10的一端插接固定于第三固定孔63内，这时套设于第三安装轴15两端的第三定位套18分别抵接于安装板10和罩壳60，这样便可保证传动第二齿轮42转动过程的轴向定位。装配完成后，罩壳60、安装板10及导向件50共同围合形成容置腔，电机21、涡轮23、蜗杆22、传动齿轮30及齿轮组40各个零部件均安装于该容置腔内，这样摄像头伸缩装置100先以模组的形式完成预安装，再整体安装于壳体内，如此可以降低摄像头伸缩装置100的安装难度。同时，由于将各个零部件均安装容置腔内，可以隔绝其工作时产生的噪音传播，从而减小移动终端使用摄像头200时产生的噪音，提升用户体验。需要说明的是，这里可以是安装板10的周缘设置有安装凸耳(未标示)，用以安装固定罩壳60。
请参阅图7，在本发明摄像头伸缩装置100的另一实施例中，驱动机构20还包括驱动齿轮24，驱动齿轮24套接于电机21的输出轴；蜗杆22的一端套设有连接齿轮25，连接齿轮25与驱动齿轮24啮合连接。这里电机21与蜗杆22之间采用啮合连接的连接齿轮25和驱动齿轮24传动，可以进一步优化整个传动机构的传动比，进一步保证摄像头200移动过程的平稳性。
请再次参阅图1，本发明还提出一种移动终端，所述移动终端包括摄像头200和如前所述的摄像头伸缩装置100，摄像头200连接于摄像头伸缩装 置100的连接件70的连接部73；该摄像头伸缩装置100的具体结构参照前述实施例。由于采用了前述所有实施例的全部技术方案，因此至少具有前述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。
具体地，移动终端包括壳体(未图示)，摄像头伸缩装置100设于壳体内并位于屏幕的背面，摄像头200也位于壳体内屏幕的背面，并连接于摄像头伸缩装置100的连接件70，如此，电机21驱动蜗杆22转动，蜗杆22转动带动涡轮23转动，涡轮23转动带动传动齿轮30转动，传动齿轮30转动带动连接件70移动，以使得摄像头200伸出或缩回，这样屏幕不必为摄像头200预留空间，移动终端具有较高的屏占比。
进一步地，摄像头200朝向摄像头伸缩装置100的一侧设置有弹性件210，连接部73连接于弹性件210远离摄像头200的一端。这里弹性件210为预压缩的弹簧，弹簧的一端固定连接于摄像头200朝向摄像头伸缩装置100的一侧，弹簧的另一端连接于连接部73。如此的设置，弹性件210既可传输伸缩动力，又可以对对摄像头200伸缩过程中受到冲击时起到缓冲作用。可选地，连接部73的朝向摄像头200的一端设置有连接凸台731，弹簧远离摄像头200的一端连接于该连接凸台731的台面，其连接方式一般为焊接，这样也可以保证其连接稳固性。为了保证弹簧210的安装稳定性，摄像头200对应设置有安装筒(未图示)，弹簧21安装于该安装筒内，且弹簧的一端连接于安装筒的底壁，另一端连接于连接凸台731，这样可以使得结构更加紧凑，传动效率较高。当然地，这里弹性件210也可以是其他具有弹性的物件，以起到缓冲的作用。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (13)

  1. 一种摄像头伸缩装置，其特征在于，包括：
    安装板；
    驱动机构，所述驱动机构包括电机、涡轮和蜗杆，所述电机安装于所述安装板，所述涡轮和所述蜗杆啮合连接，所述蜗杆传动连接于所述电机的输出部；
    传动齿轮，所述传动齿轮与所述涡轮同轴设置且相连接；以及
    连接件，所述连接件包括相连接的齿条部和连接部，所述齿条部可移动地设于所述安装板，并与所述传动齿轮传动连接，所述连接部用以连接摄像头；
    所述电机驱动所述蜗杆转动，所述蜗杆转动带动所述涡轮转动，所述涡轮转动带动所述传动齿轮转动，所述传动齿轮转动带动所述连接件移动，以使得摄像头伸出或缩回。
  2. 如权利要求1所述的摄像头伸缩装置，其特征在于，所述电机为直驱马达，所述直驱马达的输出部传动连接于所述蜗杆，所述连接件的移动方向与所述安装板的表面平行，所述直驱马达的输出部的轴线平行于所述安装板的表面。
  3. 如权利要求2所述的摄像头伸缩装置，其特征在于，所述直驱马达的输出部设置有安装槽，所述蜗杆的一端通过键固接于所述安装槽的槽壁。
  4. 如权利要求1所述的摄像头伸缩装置，其特征在于，所述安装板设置有电机固定座，所述电机安装于所述电机固定座。
  5. 如权利要求1所述的摄像头伸缩装置，其特征在于，所述安装板设置有轴承安装座，所述蜗杆远离所述电机的一端套设有轴承，所述轴承安装于所述轴承安装座；
    和/或，所述涡轮的内圈设置有连接槽，所述传动齿轮朝向所述涡轮的 一侧设置有固定件，所述固定件插接于所述连接槽内。
  6. 如权利要求1所述的摄像头伸缩装置，其特征在于，定义蜗杆的展开螺距角为β，所述涡轮和所述蜗杆接触的摩擦角为Φ，β＜Φ。
  7. 如权利要求1至6中任一项所述的摄像头伸缩装置，其特征在于，所述摄像头伸缩装置还包括齿轮组，所述齿轮组的输入端传动连接于所述传动齿轮，所述齿轮组的输出端传动连接于所述齿条部。
  8. 如权利要求7所述的摄像头伸缩装置，其特征在于，所述齿轮组包括第一齿轮和第二齿轮，所述第一齿轮和所述第二齿轮均可转动地设于所述安装板，所述第一齿轮位于所述传动齿轮背向所述蜗杆的一侧，所述第二齿轮位于所述第一齿轮背向所述传动齿轮的一侧；
    所述第一齿轮包括同轴设置且相连接的第一子齿轮和第二子齿轮，所述第一子齿轮的直径大于所述第二子齿轮的直径，且所述第二子齿轮靠近所述安装板设置；
    所述第二齿轮包括同轴设置且相连接的第三子齿轮和第四子齿轮，所述第三子齿轮的直径小于所述第四子齿轮的直径，且所述第四子齿轮靠近所述安装板设置；
    所述传动齿轮与所述第一子齿轮啮合连接，所述第二子齿轮与所述第四子齿轮啮合连接，所述第三子齿轮与所述齿条部啮合连接。
  9. 如权利要求7所述的摄像头伸缩装置，其特征在于，所述摄像头伸缩装置还包括导向件，所述导向件安装于所述安装板，并设有导向槽，所述导向槽的开口朝向所述传动齿轮设置，且沿所述连接件的移动方向延伸设置，所述齿条部可移动地容置于所述导向槽内，所述连接部设于所述齿条部背离所述传动齿轮的一侧，并贯穿所述导向槽沿所述连接件之移动方向的侧壁而显露。
  10. 如权利要求9所述的摄像头伸缩装置，其特征在于，所述摄像头伸 缩装置还包括罩壳，所述罩壳罩设于所述安装板，且所述罩壳、所述安装板及所述导向件围合形成容置腔，所述驱动机构和所述传动齿轮均设于所述容置腔内。
  11. 如权利要求1所述的摄像头伸缩装置，其特征在于，所述驱动机构还包括驱动齿轮，所述驱动齿轮套接于所述电机的输出轴；
    所述蜗杆的一端套设有连接齿轮，所述连接齿轮与所述驱动齿轮啮合连接。
  12. 一种移动终端，其特征在于，所述移动终端包括摄像头和如权利要求1至11中任一项所述的摄像头伸缩装置，所述摄像头连接于所述摄像头伸缩装置的连接件的连接部。
  13. 如权利要求12所述的移动终端，其特征在于，所述摄像头朝向所述摄像头伸缩装置的一侧设置有弹性件，所述连接部连接于所述弹性件远离所述摄像头的一端。
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