WO2020253209A1

WO2020253209A1 - Camera lifting gear and mobile terminal

Info

Publication number: WO2020253209A1
Application number: PCT/CN2019/129791
Authority: WO
Inventors: 刘春发; 孙玉强; 刘鹏; 周忠厚
Original assignee: 歌尔股份有限公司
Priority date: 2019-06-20
Filing date: 2019-12-30
Publication date: 2020-12-24
Also published as: CN110260122A

Abstract

Disclosed is a camera lifting gear (100) and a mobile terminal using same. The camera lifting gear (100) comprises: a mounting plate (10); a drive mechanism (30) mounted on a surface of the mounting plate (10); and a lifting mechanism (50) mounted on a surface of the mounting plate (10) that faces the drive mechanism (30) and being in transmission connection with the drive mechanism (30). The lifting mechanism (50) is used for mounting the camera; the drive mechanism (30) drives the lifting mechanism (50) to operate such that the camera rises or falls. The solution achieves the driving and control integration of the camera lifting gear (100), saves the space, and solves the problem of low transmission efficiency in existing lifting cameras.

Description

Camera lifting device and mobile terminal

Technical field

The present invention relates to the technical field of mobile terminals, and in particular to a camera lifting device and a mobile terminal applying the camera lifting device.

Background technique

At present, the mobile terminal with a lifting camera has a camera hidden on the back of the display screen of the mobile terminal when not in use, and extends out of the display screen when in use. Such mobile terminals have a high screen-to-body ratio and are popular among users. Existing mobile terminals with lifting cameras generally use a combination of stepping motors, micro gearboxes, and lead screws to realize the lifting movement of the camera. During assembly, these parts are generally supported and fixed by different structures. This assembly method often has the problem of low transmission efficiency.

The foregoing content is only used to assist in understanding the technical solution of the present invention, and does not mean that the foregoing content is recognized as prior art.

Summary of the invention

The main purpose of the present invention is to provide a camera lifting device and a mobile terminal, aiming to solve the problem of low transmission efficiency of the existing lifting camera.

In order to achieve the above objective, the camera lifting device proposed by the present invention includes: a mounting plate; a driving mechanism mounted on the surface of the mounting plate; and a lifting mechanism mounted on the mounting plate facing the mounting plate. The surface of the driving mechanism is drivingly connected to the driving mechanism; the lifting mechanism is used for installing a camera, and the driving mechanism drives the lifting mechanism to move to raise or lower the camera.

In an embodiment of the present invention, the lifting mechanism includes: a lead screw, which is rotatably mounted on the surface of the mounting plate facing the drive mechanism, and is drivingly connected to the drive mechanism; and lifting The lifting platform is used to install the camera, the lifting platform is sleeved on the lead screw and is threadedly connected with the lead screw; the driving mechanism drives the lead screw to rotate, so that the lifting platform rises Or drop.

In an embodiment of the present invention, the lifting mechanism further includes a guide post installed on the surface of the mounting plate facing the driving mechanism and arranged side by side with the lead screw. The lifting platform It is also sleeved on the guide post.

In an embodiment of the present invention, the lifting mechanism further includes a first positioning plate and a second positioning plate, the first positioning plate and the second positioning plate are both provided on the mounting plate facing the driving mechanism The lead screw is located between the first positioning plate and the second positioning plate, and one end of the lead screw rotatably penetrates the first positioning plate and is connected to the drive mechanism in transmission, The other end is rotatably arranged on the second positioning plate; the guide post is located between the first positioning plate and the second positioning plate, and both ends of the guide post are respectively connected to the first positioning plate And the second positioning plate.

In an embodiment of the present invention, the driving mechanism includes: a motor mounted on the surface of the mounting plate facing the lifting mechanism; a driving gear, the driving gear sleeved on the output shaft of the motor ; And a driven gear, the driven gear is connected to one end of the lead screw and meshingly connected with the driving gear.

In an embodiment of the present invention, the driving mechanism further includes a transmission gear set, which is arranged on the surface of the mounting plate facing the motor and located between the driving gear and the driven gear , The transmission gear set is in meshing connection with the driving gear and the driven gear.

In an embodiment of the present invention, the transmission gear set includes a transmission shaft, a first transmission gear, and a second transmission gear, and the first transmission gear and the second transmission gear are sequentially along the length direction of the transmission shaft. And are sleeved on the outer side of the transmission shaft, the first transmission gear is meshingly connected to the driving gear, and the second transmission gear is meshingly connected to the driven gear.

In an embodiment of the present invention, the mounting board is an integrated circuit board, and the driving mechanism is electrically connected to the integrated circuit board.

In an embodiment of the present invention, the camera lifting device further includes a position sensor, which is disposed on the surface of the integrated circuit board facing the driving mechanism, and is electrically connected to the integrated circuit board.

In an embodiment of the present invention, the position sensor is a linear displacement sensor, and the linear displacement sensor extends along the lifting direction of the camera; the moving part of the lifting mechanism is provided with a contact block, and the contact block follows The moving part moves and abuts against the linear displacement sensor.

The present invention also provides a mobile terminal, including a camera and a camera lifting device, the camera is installed on the lifting mechanism of the camera lifting device; the camera lifting device includes: a mounting plate; a drive mechanism, the drive mechanism is mounted on The surface of the mounting plate; and a lifting mechanism installed on the surface of the mounting plate facing the drive mechanism and drivingly connected to the drive mechanism; the lifting mechanism is used to install a camera, the drive The mechanism drives the lifting mechanism to move so as to raise or lower the camera.

According to the technical solution of the present invention, the driving mechanism is connected to the lifting mechanism in transmission, and the lifting mechanism is used to connect the camera of the mobile terminal. Thus, when the camera needs to be used, the lifting mechanism drives the camera to move upward under the driving of the driving mechanism, so that the camera extends The screen of the mobile terminal; when the use is completed, the lifting mechanism drives the camera to move down under the drive of the driving mechanism, so that the camera is hidden on the back of the screen, which can protect the camera to avoid accidents caused by collision or friction. In addition, the screen of the mobile terminal does not need to reserve space for the camera, which can increase the screen-to-body ratio of the mobile terminal. At the same time, the technical solution of the present invention also installs the driving mechanism and the lifting mechanism on the mounting plate at the same time. At this time, the driving mechanism, the lifting mechanism and the mounting plate form a whole, which realizes modularization. In this way, not only the components are compact, but also The transmission efficiency is high, and the pre-installation is completed in the form of a module, which greatly reduces the installation difficulty of the camera lifting device. At the same time, the installation of the mounting plate also ensures the stability of the installation of each component, thereby ensuring the reliability of the camera's lifting.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on the structures shown in these drawings.

Fig. 1 is a schematic structural diagram of an embodiment of a camera lifting device of the present invention;

Fig. 2 is a schematic view of another view of the structure of the camera lifting device of the present invention;

FIG. 3 is a schematic structural diagram of another view angle of the camera lifting device of the present invention;

Fig. 4 is a schematic structural view of another view angle of the camera lifting device of the present invention.

Description with icon number:

Label

name

Label

name

100100	摄像头升降装置 Camera lifting device	343343	第二传动齿轮 Second transmission gear
1010	安装板 Mounting plate	3535	固定架Fixed frame
1111	位置传感器 position sensor	5050	升降机构 Lifting mechanism
3030	驱动机构 Drive mechanism	5151	丝杠 Lead screw
3131	电机 Motor	5353	升降台 Lifts
3232	主动齿轮 Driving gear	531531	触块 Touch block
3333	被动齿轮 Passive gear	5555	导柱 Guide post
3434	传动齿轮组 Transmission gear set	5757	第一定位板The first positioning plate
341341	传动轴 transmission shaft	5959	第二定位板 Second positioning plate
342342	第一传动齿轮First transmission gear	To	To

The realization of the objectives, functional characteristics and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the drawings.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

It should be noted that all directional indicators (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between components in a particular posture (as shown in the accompanying drawings). If the relative position relationship, movement situation, etc. change, the directional indication will change accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, the terms "connected", "fixed", etc. should be understood in a broad sense, for example, "fixed" can be a fixed connection, a detachable connection, or a whole; It can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components or the interaction relationship between two components, unless specifically defined otherwise. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present invention can be understood according to specific circumstances.

In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but they must be based on what can be achieved by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that this combination of technical solutions It does not exist and does not fall within the scope of protection required by the present invention.

The present invention provides a camera lifting device 100, which is applied to a mobile terminal, such as a mobile phone. The camera lifting device 100 is installed in the housing of the mobile terminal and connected with the camera to drive the camera to rise or fall.

Referring to FIG. 1, in an embodiment of the present invention, the camera lifting device 100 includes: a mounting plate 10; a driving mechanism 30, which is mounted on the surface of the mounting plate 10; and a lifting mechanism 50, which is mounted on the mounting plate The board 10 faces the surface of the driving mechanism 30 and is drivingly connected to the driving mechanism 30; the lifting mechanism 50 is used for installing a camera, and the driving mechanism 30 drives the lifting mechanism 50 to move to make the camera rise or fall.

Specifically, the mounting board 10 is substantially in the shape of a flat plate, and the driving mechanism 30 is mounted on a surface of the mounting board 10, and the mounting method can be screw fixing, snap fixing or other reasonable and effective mounting and fixing methods. The lifting mechanism 50 is installed on the surface of the mounting plate 10 facing the driving mechanism 30 and is connected to the driving mechanism 30 in transmission. The lifting mechanism 50 has a moving part and a transmission part. The moving part is used to install the camera of the mobile terminal, and the transmission part is drivingly connected to the driving mechanism 30. In this way, the driving mechanism 30 drives the transmission part of the lifting mechanism 50 to operate, which can drive the moving part and the camera to rise or fall. Under normal conditions, the camera is hidden on the back of the mobile terminal screen, which can protect the camera to avoid damage to the camera due to collision or friction accidents. At the same time, the mobile terminal screen does not need to reserve space for the camera, which can increase the screen occupation of the mobile terminal ratio. When the camera needs to be used, the driving mechanism 30 is activated to drive the lifting mechanism 50 to operate, so that the camera rises and extends out of the screen; when the use is completed, the driving mechanism 30 is activated to drive the lifting mechanism 50 to move to drive the camera down to the back of the screen .

Therefore, it can be understood that the technical solution of the present invention connects the driving mechanism 30 to the lifting mechanism 50, and the lifting mechanism 50 is used to connect the camera of the mobile terminal. Thus, when the camera needs to be used, the lifting mechanism 50 is in the driving mechanism 30. Driven to drive the camera to move upwards, so that the camera protrudes out of the screen of the mobile terminal; when used, the lifting mechanism 50 drives the camera to move downwards under the drive of the drive mechanism 30, so that the camera is hidden on the back of the screen. The camera is protected to avoid damage to the camera due to collision or friction accidents, and the mobile terminal screen does not have to reserve space for the camera, which can increase the screen-to-body ratio of the mobile terminal. At the same time, the technical solution of the present invention also installs the driving mechanism 30 and the lifting mechanism 50 on the mounting plate 10 at the same time. At this time, the driving mechanism 30, the lifting mechanism 50 and the mounting plate 10 form a whole, which realizes modularization. The components are compact in structure, high in transmission efficiency, and pre-installed in the form of modules, which greatly reduces the installation difficulty of the camera lifting device 100. At the same time, the installation of the mounting plate 10 also ensures the installation stability of the components, thereby ensuring the reliability of the camera lifting operation.

1 to 3, in an embodiment of the present invention, the lifting mechanism 50 includes: a lead screw 51, the lead screw 51 is rotatably installed on the surface of the mounting plate 10 facing the driving mechanism 30, and is drivingly connected to the driving mechanism 30; and the lifting platform 53, the lifting platform 53 is used to install the camera, the lifting platform 53 is sleeved on the lead screw 51 and is threadedly connected with the lead screw 51; the driving mechanism 30 drives the lead screw 51 to rotate, so that the lifting platform 53 rises or falls .

Specifically, the screw 51 is a transmission part of the lifting mechanism 50, and the lifting platform 53 is a moving part of the lifting mechanism 50. The axis of the screw 51 is parallel to the surface of the mounting plate 10. The screw 51 can be installed on the surface of the mounting plate 10 through a support, and the screw 51 can rotate relative to the support. The support can be plate-shaped, Bracket or other reasonable shape. The screw 51 is drivingly connected to the driving mechanism 30 and can be rotated under the drive of the driving mechanism 30. The driving mechanism 30 may be a motor 31. The screw 51 is connected to the output shaft of the motor 31, and the motor 31 is activated to drive the screw 51 to rotate; It may be the motor 31 and gear combined structure that drives the lead screw 51 to rotate, or the motor 31 gear and rack combined structure drives the lead screw 51 to rotate, or other reasonable combined structures that can drive the lead screw 51 to rotate. The lifting platform 53 is provided with a threaded hole, the screw 51 is inserted in the threaded hole, and the lifting platform 53 is used to install a camera, so that the lifting platform 53 can drive the camera to rise or fall under the rotation of the lead screw 51. Here, the lifting platform 53 may be a combined structure of a nut and a lug plate, and the nut is sleeved on the outside of the screw 51, which facilitates the processing of the lifting platform 53 and reduces the processing difficulty.

Furthermore, the lifting mechanism 50 further includes a guide post 55 which is mounted on the surface of the mounting plate 10 facing the driving mechanism 30 and is arranged side by side with the lead screw 51. The lifting platform 53 is also sleeved on the guide post 55.

Specifically, the guide post 55 is roughly cylindrical, is installed on the surface of the mounting plate 10 facing the screw 51, and is arranged side by side with the screw 51. Here, the guide post 55 can be arranged parallel to the screw 51 or inclined with the screw 51. Set up. In an embodiment of the present invention, the guide post 55 and the lead screw 51 are arranged in parallel, and the lifting platform 53 is also provided with a guide hole (not labeled). The guide hole is roughly circular and its size is slightly larger than the diameter of the guide post 55. The column 55 is inserted in the guide hole. With this arrangement, when the screw 51 is rotated by the driving mechanism 30, the lifting platform 53 will move up and down along the length of the guide column 55, which can effectively avoid the lifting platform. 53 collides with the mounting plate 10 during the lifting process, thereby ensuring the smooth and effective lifting process of the lifting platform 53.

It should be noted that, please refer to Figure 1, where the lifting platform 53 can be a combination structure of a nut and two lug plates. The nut is sleeved on the screw 51, one lug plate is used to install the camera, and the other lug plate is sleeved于guide column 55.

2 and 3 again, the lifting mechanism 50 further includes a first positioning plate 57 and a second positioning plate 59. The first positioning plate 57 and the second positioning plate 59 are both provided on the surface of the mounting plate 10 facing the driving mechanism 30. The screw 51 is located between the first positioning plate 57 and the second positioning plate 59, and one end of the screw 51 rotatably penetrates the first positioning plate 57 and is connected to the driving mechanism 30, and the other end is rotatably connected Set on the second positioning plate 59; the guide post 55 is located between the first positioning plate 57 and the second positioning plate 59, and the two ends of the guide post 55 are connected to the first positioning plate 57 and the second positioning plate 59 respectively.

Specifically, the first positioning plate 57 and the second positioning plate 59 are respectively disposed adjacent to opposite sides of the mounting plate 10, and the plate surfaces of the first positioning plate 57 and the second positioning plate 59 are vertically fixed to the plate of the mounting plate 10. The fixed installation method can be screw fixation, snap fixation or other reasonable and effective fixation methods. The lead screw 51 and the guide post 55 are arranged side by side, and are located between the first positioning plate 57 and the second positioning plate 59. The first positioning plate 57 and the second positioning plate 59 are corresponding to the lead screw 51 and both have limited holes ( (Not marked), the two ends of the lead screw 51 are respectively inserted in the two limit holes, and can rotate in the limit holes. The end of the screw 51 facing the first positioning plate 57 is inserted into the limiting hole and penetrates the first positioning plate 57, and its penetrating end is drivingly connected to the driving mechanism 30. At the same time, the first positioning plate 57 and the second positioning plate 59 are provided with positioning holes corresponding to the guide posts 55, and two ends of the guide posts 55 are respectively inserted into the two positioning holes. In this way, the screw 51 and the guide post 55 can be installed, which is simple and effective.

Further, in order to reduce the friction between the screw 51 and the first positioning plate 57 and the second positioning plate 59 during the rotation of the screw 51, a bearing (not marked) may be sleeved on both ends of the screw 51, and the bearing is inserted into the corresponding The outer side of the bearing abuts against the inner wall surface of the limit hole, and the inner side abuts against the outer wall surface of the screw 51. This can effectively reduce the friction between the screw 51 and the first positioning plate 57 and the second positioning plate 59 during the rotation of the screw 51, and ensure the smooth and effective rotation of the screw 51, thereby ensuring that the lifting operation of the lifting platform 53 is smooth and effective. .

In an embodiment of the present invention, the driving mechanism 30 includes: a motor 31, which is mounted on the surface of the mounting plate 10 facing the lifting mechanism 50; a driving gear 32, which is sleeved on the output shaft of the motor 31; and a driven gear 33. The driven gear 33 is connected to one end of the lead screw 51 and meshed with the driving gear 32.

Specifically, the motor 31 is fixedly installed on the surface of the mounting plate 10 facing the lead screw 51. The fixed installation method can be screw fixing, snap fixing or other reasonable and effective fixing methods. The motor 31 is located on the first positioning plate 57 and the second positioning plate 57. Between the two positioning plates 59, and the output shaft penetrates the first positioning plate 57. The driving gear 32 is located on the side of the first positioning plate 57 facing away from the second positioning plate 59 and is sleeved on the through end of the output shaft. The driven gear 33 is also located on the side of the first positioning plate 57 facing away from the second positioning plate 59, and is sleeved on the through end of the lead screw 51. At the same time, the driven gear 33 is meshed and connected with the driving gear 32. The gear 33 is located on the same horizontal plane. With this arrangement, the motor 31 starts to drive the driving gear 32 to rotate, the driving gear 32 rotates to drive the driven gear 33 to rotate, and the lead screw 51 to rotate. At the same time, this arrangement can also make the installation of various parts relatively compact, and the transmission efficiency is high; and this arrangement can also save the space occupied by the entire camera lifting device 100.

It should be noted that a coreless motor is used for the motor 31 here. Compared with the existing stepper motor, the coreless motor has a smaller size and greatly reduces the assembly difficulty; and the operation stability is more reliable. The axis of the hollow cup motor 31 is arranged parallel to the lead screw 51, so that the length of the camera lifting device 100 can be shortened, and the components can be installed relatively compactly, thereby further improving the transmission efficiency and greatly saving the space occupied by the camera lifting device 100. Here, the hollow cup motor can be fixed by a fixing frame 35, that is, the fixing frame 35 is fixed on the surface of the mounting plate 10 facing the screw 51, and is sleeved on the outside of the hollow cup motor 31. This fixing method can effectively ensure the hollow cup motor Installation stability.

Further, referring to FIGS. 1 and 4, the driving mechanism 30 also includes a transmission gear set 34. The transmission gear set 34 is arranged on the side of the mounting plate 10 facing the motor 31 and is located between the driving gear 32 and the driven gear 33. The gear set 34 is in meshing connection with the driving gear 32 and the driven gear 33.

Since the diameter size of the driving gear 32 and the driven gear 33 is limited by the size of the mobile terminal housing, there may be frictional interference during the lifting process of the lifting platform 53 and the operation process of the motor 31, so a transmission is provided between the driving gear 32 and the driven gear 33 The gear set 34 is in meshing connection with the driving gear 32 and the driven gear 33. The arrangement of the transmission gear set 34 allows the driving gear 32 and the driven gear 33 to be located at different horizontal positions, which facilitates the designer to rationally lay out various gear parts according to the space inside the mobile terminal housing to improve space utilization.

Further, the transmission gear set 34 is rotatably installed on the first positioning plate 57 to ensure the installation stability of the transmission gear set 34, thereby ensuring the reliability of the transmission process.

3 and 4, the transmission gear set 34 includes a transmission shaft 341, a first transmission gear 342, and a second transmission gear 343. The first transmission gear 342 and the second transmission gear 343 are sequentially arranged along the length direction of the transmission shaft 341. They are all sleeved on the outside of the transmission shaft 341, the first transmission gear 342 is meshedly connected to the driving gear 32, and the second transmission gear 343 is meshedly connected to the driven gear 33.

Specifically, the first positioning plate 57 is provided with a mounting hole (not labeled) corresponding to the transmission shaft 341. The transmission shaft 341 is inserted into the mounting hole and rotates relative to the first positioning plate 57. The first transmission gear 342 and the second transmission The gears 343 are sleeved on the outside of the transmission shaft 341, and they are arranged in sequence along the length of the transmission shaft 341, so that the driving gear 32, the driven gear 33, the first transmission gear 342, and the second transmission gear 343 can be arranged more closely. Compact, the transmission efficiency is further improved. In addition, setting the size of the first transmission gear 342 to be smaller than the size of the second transmission gear 343 can achieve the effect of deceleration, because the coreless motor 31 runs at a high speed, and the driving gear 32 sleeved on the output shaft is also at a high speed. In operation, the rotation speed of the driven gear 33 can be reduced by the arrangement of the transmission gear set 34, so as to ensure that the lead screw 51 can rotate relatively smoothly, thereby ensuring that the lifting operation proceeds relatively smoothly.

It should be noted that, please refer to FIG. 1 again, where both ends of the guide post 55 can be rotatably connected to the first positioning plate 57 and the second positioning plate 59, and the end of the guide post 55 facing the first positioning plate 57 penetrates the first positioning The plate 57 and the transmission shaft 341 are connected to the penetrating end of the guide post 55, which can realize the installation of the transmission gear set 34 and the rotation stability of the transmission gear set 34. Similarly, in order to reduce the size of the guide post 55 and the first positioning plate 57 and the second positioning plate 59, bearings may also be provided at both ends of the guide post 55, and the bearings are inserted in the corresponding mounting holes, and the outer side of the bearing It abuts on the inner wall surface of the mounting hole, and the inside abuts on the outer wall surface of the screw 51.

Please refer to FIG. 1 again, a mounting lug (not marked) is formed on the periphery of the mounting plate 10, and the mounting lug is provided with a fixing hole (not marked) for fixing the mounting plate 10 in the housing of the mobile terminal. The mounting The method is simple and effective.

In an embodiment of the present invention, the mounting board 10 is an integrated circuit board, and the driving mechanism 30 is electrically connected to the integrated circuit board. Setting the mounting board 10 as an integrated circuit board can realize the integration of drive and control, thereby improving the reliability of the camera lifting device 100. This also saves the installation space of the control circuit board, thereby saving the overall space occupied by the camera lifting device 100.

Further, the camera lifting device 100 further includes a position sensor 11, which is disposed on the surface of the integrated circuit board facing the driving mechanism 30, and is electrically connected to the integrated circuit board. Here, the position sensor 11 can be a contact position sensor or a non-contact position sensor, which is used to detect the position of the lifting platform 53 in the lifting mechanism 50 during the lifting process, and convert the detected position information into an electrical signal to be fed back to the circuit board. After receiving the signal, the driving mechanism 30 is controlled to start, pause, or change speed. The contact position sensor may be: the mounting plate 10 is provided with a sensor 11, and the lifting platform 53 is correspondingly provided with a baffle. The baffle contacts the sensor 11 during the lifting process of the lifting platform 53 to reflect the position information of the lifting platform 53. The non-contact position sensor can be: the mounting plate 10 is provided with a sensor 11, the sensor 11 is a photoelectric sensor 11, and the lifting platform 53 is provided with a baffle, which will block the light during the lifting process of the lifting platform 53 to reflect the lifting platform 53 location information. Here the photoelectric sensor can be an infrared sensor. Of course, the non-contact position sensor can also be an ultrasonic sensor, a magnetoelectric sensor, etc., which will not be repeated here.

It is understandable that during the lifting process of the lifting platform 53 there are two limit positions, namely the position ascending to the highest point and the position as descending to the lowest point. A position sensor 11 can be provided at the two limit positions respectively. When the stage 53 moves to these two limit positions, the position sensor 11 converts the detected position information into an electrical signal and feeds it back to the circuit board. After the circuit board receives the electrical signal, it controls the motor 31 to start or pause. Of course, the position sensor 11 may also be a linear sensor, which corresponds to the extension of the lifting path, so that any position of the lifting platform 53 during the lifting process can be detected to ensure stable lifting operation.

In an embodiment of the present invention, please refer to FIGS. 1 to 3 again, the position sensor 11 is a linear displacement sensor, which extends along the lifting direction of the camera; the moving part of the lifting mechanism 50 is provided with a contact block 531, which touches The block 531 moves with the moving part and abuts against the linear displacement sensor.

Specifically, the linear displacement sensor is installed on the surface of the mounting plate 10 facing the screw 51, and is arranged parallel to the screw 51; the lifting platform 53 is the moving part of the lifting mechanism 50, and the contact block 531 is protruding from the lifting platform 53 facing the mounting plate 10. In this arrangement, the contact block 531 will move along the linear displacement sensor during the lifting process of the lifting platform 53, so that the linear displacement sensor 11 will feedback the lifting according to the movement displacement of the contact block 531 The position information of the station 53 is converted into electrical signals and fed back to the circuit board. It is understandable that such a setting can ensure that the lifting process will not deviate, thereby ensuring the stability of the lifting process.

Optionally, the linear displacement sensor is set to the lead screw 51, and the lifting platform 53 is provided with a contact block 531 corresponding to the linear displacement sensor. This can more accurately detect the position of the lifting platform 53 during the lifting process, thereby more effectively ensuring the lifting process stability.

Under normal conditions, the camera is located on the back of the screen, and the contact block 531 is located at the beginning of the linear displacement sensor. When the user needs to use the camera, the circuit board controls the motor 31 to rotate in the positive direction to drive the driving gear 32 to rotate in the positive direction, and the driving gear 32 to rotate in the positive direction Drive the transmission gear set 34 to rotate in the positive direction, the drive gear set 34 to rotate in the positive direction drives the passive gear 33 to rotate in the positive direction, the passive gear 33 rotates in the positive direction to drive the lead screw 51 to rotate in the forward direction, and the lifting platform 53 is under the forward rotation of the lead screw 51 The camera is driven to move upward along the length of the guide column 55. When the lifting platform 53 rises to the highest point, the camera extends out of the screen, and the contact block 531 moves forward to the maximum displacement of the linear displacement sensor 11. At this time, the circuit board controls the motor 31 to stop when it receives the electrical signal of the position information. When the use is completed, the circuit board controls the motor 31 to rotate in the reverse direction to drive the driving gear 32 to rotate in the reverse direction. The driving gear 32 reverses rotation to drive the transmission gear set 34 to reverse rotation, and the transmission gear set 34 reverses rotation to drive the driven gear 33 to reverse rotation. When the driven gear 33 rotates in the opposite direction to drive the screw 51 to rotate in the opposite direction, the lifting platform 53 drives the camera to move downward along the length of the guide column 55 under the reverse rotation of the screw 51. When the lifting platform 53 descends to the lowest point, the camera is located on the back of the screen, and the contact block 531 has the largest displacement in the reverse movement of the linear displacement sensor 11. At this time, the circuit board will control the motor 31 to stop when it receives the electrical signal of the position information. In this way, the camera lifting device 100 can drive the camera to move up and down.

The present invention also provides a mobile terminal. The mobile terminal includes a camera and the aforementioned camera lifting device 100. The camera is mounted on the lifting mechanism 50 of the camera lifting device 100. For the specific structure of the camera lifting device 100, refer to the foregoing embodiment. . Since the mobile terminal adopts all the technical solutions of all the foregoing embodiments, it has at least all the beneficial effects brought about by the technical solutions of the foregoing embodiments, which will not be repeated here.

Specifically, the mobile terminal includes a housing, and the camera lifting device 100 is provided in the housing and located on the back of the screen. The camera is also located on the back of the screen in the housing and installed on the lifting platform 53 of the lifting mechanism 50 of the camera lifting device 100. The lifting platform 53 can drive the camera up or down under the drive of the driving mechanism 30, so that the screen does not have to reserve space for the camera, and the mobile terminal has a higher screen-to-body ratio.

The above descriptions are only the preferred embodiments of the present invention, and do not limit the scope of the present invention. Under the inventive concept of the present invention, equivalent structural transformations made by using the contents of the description and drawings of the present invention, or direct/indirect use Other related technical fields are included in the scope of patent protection of the present invention.

Claims

A camera lifting device, characterized by comprising:

Mounting plate

A driving mechanism installed on the surface of the mounting plate; and

A lifting mechanism, the lifting mechanism is installed on the surface of the mounting plate facing the driving mechanism, and is drivingly connected to the driving mechanism;

The lifting mechanism is used to install a camera, and the driving mechanism drives the lifting mechanism to move to raise or lower the camera.
3. The camera lifting device of claim 1, wherein the lifting mechanism comprises:

A screw, the screw is rotatably mounted on the surface of the mounting plate facing the driving mechanism, and is drivingly connected to the driving mechanism; and

An elevating platform, the elevating platform is used to install a camera, the elevating platform is sleeved on the lead screw and is threadedly connected with the lead screw;

The driving mechanism drives the lead screw to rotate so as to raise or lower the lifting platform.
The camera lifting device according to claim 2, wherein the lifting mechanism further comprises a guide post, the guide post is installed on the surface of the mounting plate facing the driving mechanism, and is arranged side by side with the lead screw It is provided that the lifting platform is also sleeved on the guide post.
The camera lifting device of claim 3, wherein the lifting mechanism further comprises a first positioning plate and a second positioning plate, and the first positioning plate and the second positioning plate are both provided in the mounting The plates face the surface of the driving mechanism and are arranged oppositely;

The lead screw is located between the first positioning plate and the second positioning plate, one end of the lead screw rotatably penetrates the first positioning plate and is in transmission connection with the driving mechanism, and the other end is rotatably arranged at The second positioning plate;

The guide post is located between the first positioning plate and the second positioning plate, and two ends of the guide post are respectively connected to the first positioning plate and the second positioning plate.
3. The camera lifting device of claim 2, wherein the driving mechanism comprises:

A motor, the motor is installed on the surface of the mounting plate facing the lifting mechanism;

A driving gear, the driving gear is sleeved on the output shaft of the motor; and

A driven gear, the driven gear is connected to one end of the lead screw, and is meshed and connected with the driving gear.
The camera lifting device according to claim 5, wherein the driving mechanism further comprises a transmission gear set, the transmission gear set is arranged between the driving gear and the driven gear, and the transmission gear set is connected to The driving gear and the driven gear are in meshing connection.
The camera lifting device according to claim 6, wherein the transmission gear set comprises a transmission shaft, a first transmission gear and a second transmission gear, and the first transmission gear and the second transmission gear are along the The length directions of the transmission shafts are arranged in sequence, and they are all sleeved on the outside of the transmission shaft, the first transmission gear is meshingly connected to the driving gear, and the second transmission gear is meshingly connected to the driven gear.
7. The camera lifting device according to any one of claims 1 to 7, wherein the mounting board is an integrated circuit board, and the driving mechanism is electrically connected to the integrated circuit board.
8. The camera lifting device of claim 8, wherein the camera lifting device further comprises a position sensor, the position sensor is arranged on the surface of the integrated circuit board facing the driving mechanism, and is electrically connected to the The integrated circuit board.
The camera lifting device of claim 9, wherein the position sensor is a linear displacement sensor, and the linear displacement sensor extends along the lifting direction of the camera; the moving part of the lifting mechanism is provided with a contact block , The contact block moves with the moving part and abuts against the linear displacement sensor.
A mobile terminal, characterized by comprising a camera and the camera lifting device according to any one of claims 1 to 10, wherein the camera is installed in the lifting mechanism of the camera lifting device.