Micro PTZ anti-shake device

Abstract

The embodiment of the present invention provides a micro-pan turret anti-shake device, which includes: a first bracket, the first bracket having a first hollow cavity, the first hollow cavity containing a camera module, the camera module being fixedly connected to the first bracket; a second bracket, the second bracket having a second hollow cavity, the first bracket being contained in the second hollow cavity, the first bracket being rotatably connected to the second bracket so that the first bracket rotates around a first axis. The present invention solves the technical problem of insufficient anti-shake capability of the camera of the electronic device in the related art, and achieves the effect of enhancing the anti-shake capability of the camera of the electronic device.

Description

Technical Field

[0001] The present invention relates to the field of communications, and in particular to a micro-pan head anti-shake device. Background Art

[0002] Electronic devices with cameras have always been highly praised by people, especially in the era of smart electronic devices, cameras have become the standard of smart electronic devices. As people are more and more demanding about the photo effect, many technologies on professional cameras are also applied to the cameras of electronic devices, such as anti-shake technology. Now the anti-shake on electronic devices is roughly divided into electronic anti-shake and OIS optical anti-shake. Electronic anti-shake mainly analyzes and collects images on the sensor through the program. When the photo is blurred, the edge image is used to compensate for the blurred part, thereby achieving "anti-shake", but its implementation principle is more like "post-processing" of the photo, which is only a temporary solution and has no practical effect. Optical anti-shake is to add a magnetically suspended lens to the lens group, which works with the gyroscope. When the body vibrates, it can detect slight shaking and control the floating of the lens to compensate for the shaking to a certain extent, thereby avoiding the shaking of the optical path and achieving optical anti-shake. However, due to the structural principle of the camera module and other reasons, most of the OIS optical anti-shake only supports horizontal and vertical translational shake compensation (two-axis anti-shake), so the anti-shake ability has certain limitations.

[0003] In view of the technical problem of insufficient anti-shake capability of the camera of the electronic device in the related technology, no effective technical solution has been proposed yet. Summary of the invention

[0004] The embodiment of the present invention provides a micro-pan-tilt anti-shake device to at least solve the technical problem of insufficient anti-shake capability of a camera of an electronic device in the related art.

[0005] According to one embodiment of the present invention, a micro gimbal anti-shake device is provided, comprising: a first bracket, the first bracket having a first hollow cavity, the first hollow cavity accommodating a camera module, the camera module being fixedly connected to the first bracket; a second bracket, the second bracket having a second hollow cavity, the first bracket being accommodated in the second hollow cavity, the first bracket being rotatably connected to the second bracket so that the first bracket rotates around a first axis.

[0006] In an exemplary embodiment, the micro gimbal anti-shake device also includes a third bracket, the third bracket includes a moving disk and a stationary disk that rotate relative to a plane so that the moving disk rotates around a second axis, the moving disk has a third hollow cavity, the second bracket is accommodated in the third hollow cavity, the second bracket is rotatably connected to the moving disk so that the second bracket rotates around a third axis, and there is an angle between the first axis, the second axis and the third axis.

[0007] In an exemplary embodiment, the first axis, the second axis, and the third axis are perpendicular to each other.

[0008] In an exemplary embodiment, the stationary plate has a driving assembly, and the moving plate, the first bracket, and the second bracket all have a plurality of driven parts that cooperate with the driving assembly.

[0009] In an exemplary embodiment, the driving component includes a plurality of coils arranged at intervals, the driven part is a driving magnet, the driving magnet on the first bracket and the driving magnet on the second bracket are staggered; and / or the driving magnet on the first bracket and the driving magnet on the second bracket are respectively arranged one by one with the coils on the static disk; and / or the driving magnet on the moving disk and the coil on the static disk are staggered.

[0010] In an exemplary embodiment, the first bracket is a quadrilateral frame, and the first group of two oppositely arranged side edges of the first bracket are respectively connected with the first rotating shaft connecting parts, and the second group of two oppositely arranged side edges of the first bracket respectively have the driving magnets; the second bracket is a quadrilateral frame, and the first group of two oppositely arranged side edges of the second bracket are respectively connected with the second rotating shaft connecting parts, and the second group of two oppositely arranged side edges of the second bracket respectively have the driving magnets; wherein, the first rotating shaft connecting part is connected to the second group of two oppositely arranged side edges of the second bracket so that the first bracket can rotate relative to the second bracket, and the second rotating shaft connecting part is connected to both sides of the moving disk so that the second bracket can rotate relative to the moving disk.

[0011] In an exemplary embodiment, the driving magnet is disposed on a surface of the first bracket close to the stator plate; and / or the driving magnet is disposed on a surface of the second bracket close to the stator plate.

[0012] In an exemplary embodiment, a accommodating convex hump is disposed on a surface of the first bracket and / or the second bracket close to the stator disk, the accommodating convex hump has an opening facing the stator disk, and the driving magnet is accommodated in the opening and flush with the plane of the opening.

[0013] In an exemplary embodiment, the third bracket further includes a rotation bearing, and the rotation bearing is disposed between the moving plate and the static plate to enable the moving plate to rotate relative to the static plate.

[0014] In an exemplary embodiment, the third bracket also includes a rotating bearing, which is arranged between the moving plate and the stationary plate, the rotating bearing is annular and the coil is located on the inner side of the ring, and the driving magnet on the moving plate is located on the inner side of the ring.

[0015] In an exemplary embodiment, the static disk has a plurality of fixing posts, and the coils are wound around the fixing posts.

[0016] In an exemplary embodiment, the moving disk includes: a disk body having an avoidance hole for avoiding the fixed column, and the driving magnet is arranged at the disk body; and an enclosure structure, which is continuously arranged around the circumference of the disk body to enclose the third hollow cavity.

[0017] In an exemplary embodiment, the enclosure structure has a pendulum so that the center of gravity of the moving plate does not coincide with the geometric center.

[0018] In an exemplary embodiment, an offset angle formed between lines connecting the driving magnet on the moving disk and the coil on the stationary disk to the center point of the stationary disk after being staggered is less than or equal to ±15 degrees.

[0019] In an exemplary embodiment, the offset angle is ±10 degrees.

[0020] In an exemplary embodiment, the rotation angle range of the first bracket is from -5 degrees to 5 degrees; the rotation angle range of the second bracket is from -5 degrees to 5 degrees.

[0021] In an exemplary embodiment, the third bracket also includes a flexible circuit board, which is arranged between the rotating bearing and the static disk. The flexible circuit board is electrically connected to the multiple coils to supply power to the multiple coils to form multiple electromagnets. According to the energization condition of the coils, the magnetism of the electromagnet is the same or opposite to that of the driving magnet. The electromagnet and the driving magnet attract or repel each other to rotate the first bracket, the second bracket and the moving disk.

[0022] In an exemplary embodiment, the camera module further includes an annular flexible circuit board, and the enclosure structure further has a notch portion so that the annular flexible circuit board extends out from the notch portion.

[0023] Through the present invention, the first bracket is rotatably connected to the second bracket, so that the first bracket rotates around the first axis so that the camera module can rotate with the first bracket, and the rotation angle is adjusted according to the shaking of the camera module, thereby realizing rotation anti-shake. Therefore, the technical problem of insufficient anti-shake ability of the camera of the electronic device in the related art can be solved, and the effect of enhancing the anti-shake ability of the camera of the electronic device is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is an exploded view of a micro-pan-tilt anti-shake device according to an embodiment of the present invention;

[0025] Figure 2 yes Figure 1 A schematic structural diagram of the first bracket in FIG.

[0026] Figure 3 yes Figure 1 A schematic diagram of the structure of the second bracket in FIG.

[0027] Figure 4 yes Figure 1 A schematic diagram of the structure of the third bracket in FIG.

[0028] Figure 5 yes Figure 1 A cross-sectional view of the second bracket in FIG.

[0029] Figure 6 yes Figure 1 A schematic diagram of the rotation of the second bracket in FIG.

[0030] Figure 7 yes Figure 1 Schematic diagram of rotation control of the third bracket in .

[0031] The above drawings include the following reference numerals:

[0032] 10. First bracket; 11. First rotating shaft connecting member; 20. Second bracket; 21. Second rotating shaft connecting member; 30. Third bracket; 31. Moving disk; 311. Disk body; 3111. First driving magnet; 3112. Second driving magnet; 3113. Third driving magnet; 3114. Fourth driving magnet; 3115. First coil; 3116. Second coil; 3117. Third coil; 3118. Fourth coil; 312. Enclosing structure; 3121. Pendulum; 32. Static disk; 321. Coil; 322. Fixed column; 33. Rotating bearing; 34. Flexible circuit board; 40. Camera module; 41. Annular flexible circuit board; 50. Driven member. DETAILED DESCRIPTION

[0033] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and in combination with the embodiments.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0035] The micro-pan-tilt anti-shake device provided in the embodiment of the present application is mainly used for rotation anti-shake of the common AF camera module 40, and of course it can also be used for other terminal electronic devices such as FF and OIS that require rotation anti-shake. Taking the common AF camera module 40 as an example, Figure 1 FIG. 1 is an exploded view of a micro-pan-tilt anti-shake device according to an embodiment of the present invention. Figure 1 As shown, the micro-pan-tilt anti-shake device includes a first bracket 10 and a second bracket 20. The first bracket 10 has a first hollow cavity, and the first hollow cavity accommodates a camera module 40, and the camera module 40 is fixedly connected to the first bracket 10. The second bracket 20 has a second hollow cavity, and the first bracket 10 is accommodated in the second hollow cavity. The first bracket 10 and the second bracket 20 are rotatably connected to allow the first bracket 10 to rotate around a first axis.

[0036] The first bracket 10 is rotatably connected to the second bracket 20 so that the first bracket 10 rotates around the first axis, so that the camera module 40 can rotate along with the first bracket 10, and the rotation angle is adjusted according to the shaking of the camera module 40, thereby realizing rotation anti-shake. Therefore, the technical problem of insufficient anti-shake capability of the camera of the electronic device in the related art can be solved, and the effect of enhancing the anti-shake capability of the camera of the electronic device is achieved.

[0037] In an exemplary embodiment, Figure 1 As shown, the micro-gimbal anti-shake device further includes a third bracket 30. The third bracket 30 includes a moving plate 31 and a static plate 32 that rotate relative to a plane, so that the moving plate 31 rotates around a second axis, the moving plate 31 has a third hollow cavity, the second bracket 20 is accommodated in the third hollow cavity, and the second bracket 20 is rotatably connected to the moving plate 31, so that the second bracket 20 rotates around the third axis. An angle is formed between the first axis, the second axis, and the third axis.

[0038] The third bracket 30 includes a moving disk 31 and a static disk 32 that rotate relative to a plane, so that the moving disk 31 rotates around a second axis, and the second bracket 20 is rotatably connected to the moving disk 31, so that the second bracket 20 rotates around a third axis, and there is an angle between the first axis, the second axis and the third axis, so that the camera module 40 can rotate in three directions, thereby achieving anti-shake in three directions. Therefore, the technical problem of insufficient anti-shake capability of the camera of the electronic device in the related art can be solved, and the effect of enhancing the anti-shake capability of the camera of the electronic device is achieved.

[0039] In an exemplary embodiment, the first axis, the second axis and the third axis are perpendicular to each other. Specifically, the first axis is equivalent to the Y axis in a three-dimensional rectangular coordinate system, the second axis is equivalent to the Z axis in a three-dimensional rectangular coordinate system, and the third axis is equivalent to the X axis in a three-dimensional rectangular coordinate system. That is to say, by rotating the first bracket 10 around the first axis, the movable plate 31 around the second axis and the second bracket 20 around the third axis, the camera module 40 is rotated in three-dimensional space, with a high degree of rotational freedom, so that the anti-shake effect is better.

[0040] In an exemplary embodiment, Figure 1 and Figure 4 As shown, the static plate 32 has a driving assembly, and the dynamic plate 31, the first bracket 10 and the second bracket 20 all have a plurality of driven members 50 that cooperate with the driving assembly. Through the driving between the driving assembly and the driven members 50, the first bracket 10 rotates around the first axis, the dynamic plate 31 rotates around the second axis, and the second bracket 20 rotates around the third axis.

[0041] In an exemplary embodiment, Figure 4 As shown, the driving assembly includes a plurality of coils 321 arranged at intervals, and the driven member 50 is a driving magnet. The static disk 32 has a plurality of fixed columns 322, and the coils 321 are wound around the fixed columns 322. When the coils 321 are energized, the coils 321 and the fixed columns 322 form an electromagnet, and the electromagnet and the driving magnet attract or repel each other, thereby realizing the rotation of the first bracket 10, the second bracket 20 and the moving disk 31.

[0042] In an exemplary embodiment, Figures 1 to 4As shown, the driving magnet on the first bracket 10 and the driving magnet on the second bracket 20 are staggered. The driving magnet on the first bracket 10 and the driving magnet on the second bracket 20 are staggered, so that the first bracket 10 can rotate around the first axis and the second bracket 20 can rotate around the third axis, thereby realizing the rotation of the camera module 40 in the Y-axis and X-axis directions of the three-dimensional rectangular coordinate system. The driving magnet on the first bracket 10 and the driving magnet on the second bracket 20 are respectively arranged in a one-to-one correspondence with the coil 321 on the static disk 32. The driving magnet on the first bracket 10 and the coil 321 on the static disk 32 are arranged in a one-to-one correspondence, so that the coil 321 can attract or repel the driving magnet when it is energized, thereby realizing the rotation of the first bracket 10 around the first axis. Similarly, the driving magnet on the second bracket 20 and the coil 321 on the static disk 32 are arranged in a one-to-one correspondence, so that the coil 321 can attract or repel the driving magnet when it is energized, thereby realizing the rotation of the second bracket 20 around the third axis. The driving magnet on the moving disk 31 and the coil 321 on the stationary disk 32 are staggered. By staggering the driving magnet and the coil 321, when the coil 321 is energized, the coil 321 and the driving magnet attract or repel each other, thereby generating a force that pushes the turntable to rotate on the stationary disk 32, that is, the turntable can rotate around the second axis, thereby realizing the rotation of the camera module 40 in the Z-axis direction of the three-dimensional rectangular coordinate system.

[0043] In an exemplary embodiment, Figures 2 to 3 As shown, the first bracket 10 is a quadrilateral frame, and the first set of two oppositely disposed sides of the first bracket 10 are respectively connected to the first shaft connecting member 11, and the second set of two oppositely disposed sides of the first bracket 10 are respectively provided with the driving magnet. The second bracket 20 is a quadrilateral frame, and the first set of two oppositely disposed sides of the second bracket 20 are respectively connected to the second shaft connecting member 21, and the second set of two oppositely disposed sides of the second bracket 20 are respectively provided with the driving magnet. The first shaft connecting member 11 is connected to the second set of two oppositely disposed sides of the second bracket 20, so that the first bracket 10 can rotate relative to the second bracket 20, and the second shaft connecting member 21 is connected to both sides of the movable disk 31, so that the second bracket 20 can rotate relative to the movable disk 31.

[0044] Specifically, the two first rotating shaft connectors 11 are coaxially arranged, and the axial directions of the two first rotating shaft connectors 11 coincide with the first axis, thereby realizing the rotation of the camera module 40 in the Y-axis direction of the three-dimensional rectangular coordinate system. The two second rotating shaft connectors 21 are coaxially arranged, and the axial directions of the two second rotating shaft connectors 21 coincide with the third axis, thereby realizing the rotation of the camera module 40 in the X-axis direction of the three-dimensional rectangular coordinate system.

[0045] In an exemplary embodiment, the first rotating shaft connecting member 11 and the second rotating shaft connecting member 21 are both rotating shaft screws.

[0046] In an exemplary embodiment, Figure 5 As shown, the driving magnet is disposed on the surface of the second bracket 20 on the side close to the static plate 32. Similarly, the driving magnet is disposed on the surface of the first bracket 10 on the side close to the static plate 32. Specifically, a convex accommodating bump is disposed on the surface of the first bracket 10 and the second bracket 20 on the side close to the static plate 32, and the convex accommodating bump has an opening facing the static plate 32, and the driving magnet is accommodated in the opening and is flush with the plane of the opening.

[0047] Taking the rotation mode of the second bracket 20 as an example, Figure 5 As shown, there are two driving magnets on the second bracket 20 in this embodiment. The coil 321 on the left side is energized to form an electromagnet, which generates a force F1 with the driving magnet on its top, thereby repelling or attracting the second bracket 20 to rotate clockwise or counterclockwise around the first rotating shaft connecting member 11. Similarly, the coil 321 on the right side is energized to form an electromagnet, which generates a force F2 with the driving magnet on its top, thereby repelling or attracting the second bracket 20 to rotate clockwise or counterclockwise around the first rotating shaft connecting member 11. The magnitude and direction of force F1 and force F2 can be adjusted by controlling the magnitude and direction of the current of the coil 321, and a dynamic balance is formed between force F1 and force F2, thereby achieving the clockwise or counterclockwise rotation of the second bracket 20 around the first rotating shaft connecting member 11. As shown Figure 6As shown, the rotation angle range of the second bracket 20 is -5 degrees to 5 degrees. Similarly, the rotation method of the first bracket 10 is the same as the rotation method of the second bracket 20. There are also two driving magnets on the first bracket 10, which will not be repeated here. The rotation angle range of the first bracket 10 is also -5 degrees to 5 degrees. Of course, the rotation angle range of the first bracket 10 and the rotation angle range of the second bracket 20 can be adjusted according to actual use requirements, but when the rotation angle range of the first bracket 10 and the rotation angle range of the second bracket 20 are greater than ±5 degrees, the thickness of the entire micro-gimbal anti-shake device needs to be increased accordingly to ensure that the internal structure of the micro-gimbal anti-shake device will not interfere when the rotation angle range of the first bracket 10 and the rotation angle range of the second bracket 20 are larger.

[0048] In an exemplary embodiment, Figure 1 As shown, the third bracket 30 also includes a rotating bearing 33, which is arranged between the moving plate 31 and the static plate 32, so that the moving plate 31 can rotate relative to the static plate 32. The second axis is perpendicular to the plane where the static plate 32 is located, thereby realizing the rotation of the camera module 40 in the Z-axis direction of the three-dimensional rectangular coordinate system. The bearing connection has the advantages of low friction and smooth operation, thereby ensuring the accuracy and stability of the rotation of the moving plate 31 on the static plate 32.

[0049] In an exemplary embodiment, Figure 1 and Figure 4 As shown, the third bracket 30 further includes a rotating bearing 33, which is disposed between the moving plate 31 and the stationary plate 32. The rotating bearing 33 is annular and the coil 321 is located inside the annular shape. The driving magnet on the moving plate 31 is located inside the annular shape. Specifically, the outer peripheral shape of the moving plate 31, the outer peripheral shape of the rotating bearing 33, and the outer peripheral shape of the stationary plate 32 are matched.

[0050] In an exemplary embodiment, Figure 4 As shown, the moving disk 31 includes a disk body 311 and an enclosure structure 312. The disk body 311 has an avoidance hole for avoiding the fixed column 322, and the driving magnet is arranged at the disk body 311; the enclosure structure 312 is continuously arranged around the circumference of the disk body 311 to enclose the third hollow cavity. The fixed column 322 passes through the avoidance hole, so that the fixed column 322 is closer to the driving magnet, ensuring the attraction or repulsion effect between the electromagnet formed by the fixed column 322 and the coil 321 wound on the fixed column 322 and the driving magnet.

[0051] In an exemplary embodiment, Figure 4As shown, the enclosure structure 312 has a pendulum 3121, so that the center of gravity of the moving disk 31 does not coincide with the geometric center. Specifically, the pendulum 3121 is located on a section of the enclosure mechanism and has a certain weight, so that the center of gravity of the turntable is located on the pendulum 3121, so that the center of gravity of the turntable does not coincide with the geometric center. When the micro-pan-tilt anti-shake device is not working, the coil 321 is not energized, so no force is generated to push the turntable to rotate. Under the action of the gravity of the pendulum 3121, the enclosure structure 312 of the turntable has one end of the pendulum 3121 remain vertically downward, thereby ensuring that the micro-pan-tilt anti-shake device maintains a vertical direction when not working.

[0052] In an exemplary embodiment, Figure 7 As shown, the offset angle formed by the lines connecting the driving magnet on the moving disk 31 and the coil 321 on the static disk 32 to the center point of the static disk 32 after being staggered is less than or equal to ±15 degrees. It should be noted that the positive and negative signs of the offset angle represent the direction of rotation, where the positive sign is clockwise and the negative sign is counterclockwise. In this embodiment, the offset angle is ±10 degrees. Of course, the offset angle can also be greater than ±15 degrees, which can be selected according to actual usage requirements.

[0053] In an exemplary embodiment, Figure 7As shown, there are four driving magnets on the moving disk 31, and the four driving magnets are arranged on the disk body 311 at intervals, and the offset angles formed between the lines connecting the four driving magnets and the corresponding four coils 321 on the static disk 32 after being staggered to the center point of the static disk 32 are all 10 degrees. In this embodiment, in the circumferential direction of the static disk 32, the first driving magnet 3111 is located on the left side of the first coil 3115, the second driving magnet 3112 is located on the right side of the second coil 3116, the third driving magnet 3113 is located on the left side of the third coil 3117, and the fourth driving magnet 3114 is located on the right side of the fourth coil 3118. The four coils are energized at the same time, but the magnetism of the first coil 3115 and the third coil 3117 is opposite, and the magnetism of the second coil 3116 and the fourth coil 3118 is opposite. The moving disk 31 obtains four torques, but the four torques are the same in magnitude but different in direction, so they cancel each other out. At this time, the moving disk 31 is in a stationary state relative to the static disk 32. When the moving disk 31 needs to rotate, taking the counterclockwise rotation of the moving disk 31 as an example, the second coil 3116 and the fourth coil 3118 change their magnetism to attract the second drive magnet 3112 and the fourth drive magnet 3114 respectively, while the first coil 3115 and the third coil 3117 continue to repel the first drive magnet 3111 and the third drive magnet 3113 respectively, so that the moving disk 31 obtains a counterclockwise torque and starts to rotate counterclockwise at an accelerated speed. When the rotating disk is about to rotate to a predetermined offset angle, the second coil 3116 and the fourth coil 3118 change their magnetism to repel the second drive magnet 3112 and the fourth drive magnet 3114 respectively, while the first coil 3115 and the third coil 3117 change their magnetism to attract the first drive magnet 3111 and the third drive magnet 3113 respectively, so that the moving disk 31 obtains a clockwise torque and the moving disk 31 starts to rotate at a reduced speed. When the moving disk 31 reaches a predetermined offset angle, the rotation speed of the moving disk 31 is 0, and at the same time, the second coil 3116 and the fourth coil 3118 change their magnetism to repel the second driving magnet 3112 and attract the fourth driving magnet 3114, and the first coil 3115 and the third coil 3117 also change their magnetism to repel the first driving magnet 3111 and attract the third driving magnet 3113. The four torques obtained by the moving disk 31 cancel each other out again, and the moving disk 31 stops at a predetermined deflection angle, thereby completing the rotation anti-shake in the Z-axis direction of the three-dimensional rectangular coordinate system. Of course, there can be more than four driving magnets on the moving disk 31, which can be selected according to actual needs, as long as the above-mentioned rotation anti-shake effect is achieved. In addition, the control current size and direction of the coil 321 corresponding to the driving magnet on the moving disk 31 can also be different, as long as the rotation anti-shake effect is achieved.

[0054] In an exemplary embodiment, Figure 1 and Figure 4As shown, the third bracket 30 further includes a flexible circuit board 34, which is disposed between the rotating bearing 33 and the static disk 32. The flexible circuit board 34 is electrically connected to the plurality of coils 321 to supply power to the plurality of coils 321 to form a plurality of electromagnets. According to the energization of the coils 321, the magnetism of the electromagnets is the same or opposite to that of the driving magnets, and the electromagnets and the driving magnets attract or repel each other to rotate the first bracket 10, the second bracket 20 and the dynamic disk 31. Specifically, the flexible circuit board 34 has avoidance holes corresponding to the plurality of fixed columns 322, so that the plurality of fixed columns 322 pass through the flexible circuit board 34. The fixed columns 322 pass through the avoidance holes of the flexible circuit board 34, so that the fixed columns 322 are closer to the driving magnets, ensuring the attraction or repulsion effect between the electromagnets formed by the fixed columns 322 and the coils 321 wound around the fixed columns 322 and the driving magnets. In another exemplary embodiment, the stationary plate 32 does not have the fixed column 322, and the flexible circuit board 34 has a plurality of protruding columns corresponding to the driving magnets, and the periphery of the protruding columns is formed into a spiral coil by EDA routing. When the spiral coil is energized, an electromagnet is formed, and the magnetism of the electromagnet is the same or opposite to that of the driving magnet, and the electromagnet and the driving magnet attract or repel each other to rotate the first bracket 10, the second bracket 20 and the moving plate 31.

[0055] In an exemplary embodiment, Figure 1 As shown, the camera module 40 also includes an annular flexible circuit board 41, and the enclosure structure 312 also has a notch portion so that the annular flexible circuit board 41 extends out from the notch portion. The annular flexible circuit board 41 is connected to the power supply system and the control system to ensure the normal use of the camera module 40. Considering that when the camera module 40 rotates, the annular flexible circuit board 41 will generate a pulling force on the camera module 40, which will affect the rotation accuracy of the camera module 40, and further affect the rotation anti-shake effect, the connection mode between the camera module 40 and the power supply system and the control system can be changed from a flexible circuit board connection to a wireless connection, so as to prevent the annular flexible circuit board 41 from generating a pulling force on the camera module 40 when the camera module 40 rotates, thereby ensuring the rotation accuracy of the camera module 40 and thus ensuring the rotation anti-shake effect.

[0056] From the above description, it can be seen that the embodiments of the present invention achieve the following technical effects: through electromagnetic control, 3-axis rotation anti-shake can be achieved, and a larger rotation angle can be achieved, and the volume can also be very small. By clamping the anti-shake camera, 5-axis anti-shake can also be achieved, and a larger angle of anti-shake can be achieved by appropriately increasing the tiny size, and the scalability is strong. The modular design can maintain the integrity of the clamped camera module 40 to the greatest extent, and the interchangeability and versatility are strong. In addition, in addition to being used for mobile phone camera anti-shake, the present invention can also be applied to other terminal electronic devices with anti-shake requirements if a larger size and current are used.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A micro-pan-tilt anti-shake device, characterized in that: include: A first bracket (10), the first bracket (10) having a first hollow cavity, the first hollow cavity accommodating a camera module (40), the camera module (40) being fixedly connected to the first bracket (10); a second bracket (20), the second bracket (20) having a second hollow cavity, the first bracket (10) being accommodated in the second hollow cavity, the first bracket (10) being rotatably connected to the second bracket (20) so that the first bracket (10) rotates around a first axis; A third bracket (30), the third bracket (30) comprises a moving disk (31) and a stationary disk (32) which rotate relative to a plane so that the moving disk (31) rotates around a second axis, the stationary disk (32) comprises a driving assembly, the moving disk (31), the first bracket (10) and the second bracket (20) all comprise a plurality of driven parts (50) which cooperate with the driving assembly, the driving assembly comprises a plurality of coils (321) arranged at intervals, and the driven parts (50) are driving magnets.

2. The micro-pan-tilt anti-shake device according to claim 1, characterized in that: The movable plate (31) has a third hollow cavity, the second bracket (20) is accommodated in the third hollow cavity, the second bracket (20) is rotatably connected to the movable plate (31), so that the second bracket (20) rotates around a third axis, and an angle is formed between the first axis, the second axis and the third axis.

3. The micro-pan-tilt anti-shake device according to claim 2, characterized in that: The first axis, the second axis and the third axis are perpendicular to each other.

4. The micro-pan-tilt anti-shake device according to claim 2, characterized in that: The driving magnet on the first bracket (10) and the driving magnet on the second bracket (20) are staggered; and / or The driving magnet on the first bracket (10) and the driving magnet on the second bracket (20) are respectively arranged in one-to-one correspondence with the coil (321) on the static disk (32); and / or The driving magnet on the moving plate (31) and the coil (321) on the stationary plate (32) are staggered.

5. The micro-pan-tilt anti-shake device according to claim 4, characterized in that: The first bracket (10) is a quadrilateral frame, the first set of two oppositely disposed side edges of the first bracket (10) are respectively connected to the first rotating shaft connecting members (11), and the second set of two oppositely disposed side edges of the first bracket (10) are respectively provided with the driving magnets; The second bracket (20) is a quadrilateral frame, the first group of two oppositely disposed side edges of the second bracket (20) are respectively connected to the second shaft connecting members (21), and the second group of two oppositely disposed side edges of the second bracket (20) are respectively provided with the driving magnets; The first rotating shaft connecting member (11) is connected to two oppositely arranged side edges of a second group of the second bracket (20) so that the first bracket (10) can rotate relative to the second bracket (20), and the second rotating shaft connecting member (21) is connected to two sides of the movable disk (31) so that the second bracket (20) can rotate relative to the movable disk (31).

6. The micro-pan-tilt anti-shake device according to claim 4, characterized in that: The driving magnet is arranged on a surface of the first bracket (10) on a side close to the static plate (32); and / or The driving magnet is arranged on the surface of the second bracket (20) on a side close to the static plate (32).

7. The micro-pan-tilt anti-shake device according to claim 4, characterized in that: An accommodating bulge is provided on the surface of the first bracket (10) and / or the second bracket (20) on one side close to the static disk (32), the accommodating bulge has an opening facing the static disk (32), and the driving magnet is accommodated in the opening and flush with the plane of the opening.

8. The micro-pan-tilt anti-shake device according to any one of claims 2 to 7, characterized in that: The third bracket (30) further comprises a rotating bearing (33), wherein the rotating bearing (33) is arranged between the moving plate (31) and the static plate (32) so as to enable the moving plate (31) to rotate relative to the static plate (32).

9. The micro-pan-tilt anti-shake device according to claim 4, characterized in that: The third bracket (30) further comprises a rotating bearing (33), wherein the rotating bearing (33) is arranged between the moving disk (31) and the stationary disk (32), the rotating bearing (33) is annular and the coil (321) is located on the inner side of the annular shape, and the driving magnet on the moving disk (31) is located on the inner side of the annular shape.

10. The micro-pan-tilt anti-shake device according to claim 4, characterized in that: The static disk (32) is provided with a plurality of fixing columns (322), and the coil (321) is wound around the fixing columns (322).

11. The micro-pan-tilt anti-shake device according to claim 10, characterized in that: The moving plate (31) comprises: A disk body (311), the disk body (311) having an escape hole for escaping the fixing column (322), and the driving magnet is arranged on the disk body (311); The enclosure structure (312) is continuously arranged around the circumference of the disk body (311) to enclose the third hollow cavity.

12. The micro-pan-tilt anti-shake device according to claim 11, characterized in that: The enclosure structure (312) has a pendulum (3121) so that the center of gravity and the geometric center of the moving disk (31) do not coincide.

13. The micro-pan-tilt anti-shake device according to claim 4, characterized in that: The offset angle formed between the lines connecting the driving magnet on the moving disk (31) and the coil (321) on the stationary disk (32) to the center point of the stationary disk (32) after being staggered is less than or equal to ±15 degrees.

14. The micro-pan-tilt anti-shake device according to claim 13, characterized in that: The offset angle is ±10 degrees.

15. The micro-pan-tilt anti-shake device according to any one of claims 2 to 7, characterized in that: The rotation angle range of the first bracket (10) is from -5 degrees to 5 degrees; The rotation angle range of the second bracket (20) is from -5 degrees to 5 degrees.

16. The micro-pan-tilt anti-shake device according to claim 9, characterized in that: The third bracket (30) further comprises a flexible circuit board (34), wherein the flexible circuit board (34) is arranged between the rotating bearing (33) and the static disk (32), and the flexible circuit board (34) is electrically connected to the plurality of coils (321) to supply power to the plurality of coils (321) to form a plurality of electromagnets. According to the energization condition of the coils (321), the magnetism of the electromagnets is the same as or opposite to that of the driving magnets, and the electromagnets and the driving magnets attract or repel each other to rotate the first bracket (10), the second bracket (20) and the dynamic disk (31).

17. The micro-pan-tilt anti-shake device according to claim 11, characterized in that: The camera module (40) further comprises an annular flexible circuit board (41), and the enclosure structure (312) further comprises a notch portion, so that the annular flexible circuit board (41) protrudes from the notch portion.

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