Micro anti-shake gimbal

Abstract

The present invention discloses a micro anti-shake micro gimbal, which comprises a camera module, a torsion spring and a first actuator assembly, wherein the first actuator assembly is arranged on the side of the camera module, and the first actuator assembly comprises a first rotating part, a first fixed part, a first memory alloy wire and a second memory alloy wire, wherein the middle part of the first rotating part is fixedly connected with the connecting part, the first fixed part is located on both sides of the first rotating part and is fixedly arranged on the frame part; the first memory alloy wire is connected with the top of the first rotating part and is connected with the first fixed part on one side, and the second memory alloy wire is connected with the bottom of the first rotating part and is connected with the first fixed part on the other side; the first memory alloy wire and the second memory alloy wire located on both sides of the first rotating part are energized and contracted at the same time to drive the first rotating part to rotate, and the first rotating part drives the camera module to rotate through the connecting part.

Description

Technical Field

[0001] The present invention relates to the technical field of camera equipment, and in particular to a micro anti-shake pan / tilt platform. Background Art

[0002] In recent years, small mobile devices with fixed-focus wide-angle (viewing angle over 80 degrees) shooting functions have become very popular, and their application scope has been expanding, including smart glasses, tablet computers, and aerial photography. When taking photos and videos, the photos and videos taken by the above devices are likely to be blurred or shaken due to external vibrations, affecting the quality of photos and videos. When the vibration is more intense or in low light conditions, the problem will be more serious.

[0003] In order to solve the above problems, many anti-shake technologies have appeared on the market, among which the best effect is the anti-shake through micro anti-shake gimbal. Micro gimbal anti-shake achieves the anti-shake effect by driving the entire camera module including the lens and image sensor to move. The existing micro gimbal anti-shake uses coils and magnets to drive, but the driving force of the coils and magnets to drive the camera module in this way is too small, and the volume occupied is also large. At the same time, the magnetism of the coils and magnets will interfere with the image collection of the camera module. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a micro anti-shake gimbal, which drives a camera module through a memory alloy wire. It not only has a greater driving force and a small size, but also does not interfere with the image collection of the camera module.

[0005] According to an embodiment of the present invention, a micro anti-shake micro gimbal includes a camera module, a torsion spring and a first actuator assembly, wherein the camera module is used to capture images; the torsion spring includes a connecting portion, a frame portion and a first torsion arm, wherein the connecting portion is connected to the bottom of the camera module, wherein the frame portion frames the connecting portion, and wherein the connecting portion is rotatably connected to the frame portion through the first torsion arm; the first actuator assembly is arranged on the side of the camera module, wherein the first actuator assembly includes a first rotating portion, a first fixed portion, a first memory alloy wire and a second memory alloy wire, wherein the middle portion of the first rotating portion is fixedly connected to the connecting portion, and the first fixed portion is located on both sides of the first rotating portion; the first memory alloy wire is connected to the top of the first rotating portion and is connected to the first fixed portion on one side, and the second memory alloy wire is connected to the bottom of the first rotating portion and is connected to the first fixed portion on the other side; the first memory alloy wire and the second memory alloy wire located on both sides of the first rotating portion are simultaneously energized and contracted to drive the first rotating portion to rotate, and the first rotating portion drives the camera module to rotate through the connecting portion.

[0006] According to the embodiment of the present invention, the micro anti-shake gimbal has at least the following technical effects: the first actuator assembly is arranged on the side of the camera module, the first memory alloy wire is connected to the top of the first rotating part and is connected to the first fixed part on one side, the second memory alloy wire is connected to the bottom of the first rotating part and is connected to the first fixed part on the other side, when the first memory alloy wire and the second memory alloy wire located on both sides of the first rotating part are energized and contracted at the same time, the force generated by the memory alloy wire on the first rotating part will cause the first rotating part to rotate, the first rotating part is fixedly connected to the connecting part of the torsion spring, and the connecting part is fixedly connected to the camera module, so the rotation of the first rotating part will drive the connecting part and the camera module to rotate together, thereby quickly adjusting the position of the camera module, and playing an anti-shake role. Through such a setting, compared with the setting of coil plus magnet, the micro anti-shake gimbal of the present invention can make the camera device smaller in size and lighter in weight, and the camera module can be controlled more accurately by controlling the contraction degree of the first memory alloy wire and the second memory alloy wire, and no magnetism will be generated to interfere with the camera device.

[0007] According to some embodiments of the present invention, the first rotating part includes a first plate and a second plate, the first plate is fixedly connected to the top wall of the connecting part, and the second plate is fixedly connected to the bottom wall of the connecting part; the first plate protrudes upward and then bends outward to form a first wire clamp, and the second plate protrudes downward and then bends outward to form a second wire clamp; the first wire clamp is fixedly connected to the first memory alloy wire, and the second wire clamp is fixedly connected to the second memory alloy wire.

[0008] According to some embodiments of the present invention, the first fixing portion includes a third plate and a fourth plate, the third plate is fixedly connected to the top wall of the frame, and the fourth plate is fixedly connected to the bottom wall of the frame; the third plate protrudes upward and then bends outward to form a third wire clamp, and the fourth plate protrudes downward and then bends outward to form a fourth wire clamp; the third wire clamp is fixedly connected to the first memory alloy wire, and the fourth wire clamp is fixedly connected to the second memory alloy wire.

[0009] According to some embodiments of the present invention, a second actuator assembly is further included, which is arranged on the torsion spring and located on the adjacent side of the first actuator assembly; the second actuator assembly includes a second rotating part, a second fixed part, a third memory alloy wire and a fourth memory alloy wire, the middle part of the second rotating part is fixedly connected to the frame part, and the second fixed part is located on both sides of the second rotating part; the third memory alloy wire is connected to the top of the second rotating part and to the second fixed part on one side, and the fourth memory alloy wire is connected to the bottom of the second rotating part and to the second fixed part on the other side; the third memory alloy wire and the fourth memory alloy wire located on both sides of the second rotating part are energized and contracted at the same time to drive the second rotating part to rotate, and the second rotating part drives the connecting part to rotate through the frame part.

[0010] According to some embodiments of the present invention, the torsion spring further includes a fixed plate and a second torsion arm, the second fixed portion is fixedly disposed on the fixed plate, the fixed plate frames the frame portion therein, and the frame portion is rotatably connected to the fixed plate via the second torsion arm.

[0011] According to some embodiments of the present invention, the second rotating part also includes a fifth plate and a sixth plate, the fifth plate is fixedly connected to the top wall of the frame, the sixth plate is fixedly connected to the bottom wall of the frame, the middle part of the fifth plate protrudes upward and then bends outward to form a fifth wire clamp, the middle part of the sixth plate protrudes downward and then bends outward to form a sixth wire clamp; the fifth wire clamp is fixedly connected to the third memory alloy wire, and the sixth wire clamp is fixedly connected to the fourth memory alloy wire.

[0012] According to some embodiments of the present invention, the second fixing portion also includes a seventh plate and an eighth plate, the seventh plate being fixedly connected to the top wall of the fixing plate, and the eighth plate being fixedly connected to the bottom wall of the fixing plate; the seventh plate protrudes upward and then bends outward to form a seventh wire clamp, the eighth plate protrudes downward and then bends outward to form an eighth wire clamp, the seventh wire clamp is fixedly connected to the third memory alloy wire, and the eighth wire clamp is fixedly connected to the fourth memory alloy wire.

[0013] According to some embodiments of the present invention, a base is further included, which is fixedly connected to the torsion spring. The base is recessed inward to form a accommodating cavity, and the bottom wall of the accommodating cavity protrudes upward to form a first protrusion, which abuts against the bottom surface of the connecting part.

[0014] According to some embodiments of the present invention, a second protrusion is provided on the top of the first protrusion protruding upward, the second protrusion abuts against the bottom surface of the connecting portion, and the first protrusion abuts against the bottom surface of the connecting portion through the second protrusion.

[0015] According to some embodiments of the present invention, the bottom wall of the accommodating cavity is provided with a plurality of groups of third protrusions protruding upward, the plurality of third protrusions are arranged around the first protrusion, and the tops of the third protrusions are lower than the tops of the first protrusions.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 is a schematic diagram of the overall structure of a micro anti-shake gimbal according to an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of the internal structure of a micro anti-shake gimbal according to an embodiment of the present invention;

[0020] Figure 3 is a schematic diagram of the internal structure of a micro anti-shake gimbal according to an embodiment of the present invention;

[0021] Figure 4 is a schematic structural diagram of a torsion spring and an actuator assembly according to an embodiment of the present invention;

[0022] Figure 5 is a schematic diagram of the structure of a torsion spring according to an embodiment of the present invention;

[0023] Figure 6 is a schematic structural diagram of a first plate component, a third plate component, and a fifth plate component according to an embodiment of the present invention;

[0024] Figure 7 is a schematic diagram of the structures of the second plate, the fourth plate and the sixth plate according to an embodiment of the present invention;

[0025] Figure 8 is a schematic diagram of a base structure according to an embodiment of the present invention;

[0026] Fig. 9 Schematic diagram of a first protrusion structure according to an embodiment of the present invention.

[0027] Reference numerals:

[0028] The camera module 100, the torsion spring 200, the connecting portion 210, the frame portion 220, the fixing plate 230, the first torsion arm 240, the second torsion arm 250,

[0029] The first rotating part 310, the first fixing part 320, the first memory alloy wire 330, the second memory alloy wire 340,

[0030] The second rotating part 410, the second fixing part 420, the third memory alloy wire 430, the fourth memory alloy wire 440,

[0031] a first plate 510, a first wire clamp 511, a second plate 520, a second wire clamp 521, a third plate 530, a third wire clamp 531, a fourth plate 540, a fourth wire clamp 541, a fifth plate 550, a fifth wire clamp 551, a sixth plate 560, a sixth wire clamp 561, a seventh plate 570, a seventh wire clamp 571, an eighth plate 580, an eighth wire clamp 581,

[0032] Base 600 , accommodating cavity 610 , first protrusion 620 , second protrusion 621 , third protrusion 630 , and IC controller 700 . DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] Reference below Figures 1 to 9 A micro anti-shake gimbal according to an embodiment of the present invention is described.

[0038] For example Figure 2 and Figure 3 As shown, the micro anti-shake gimbal according to the embodiment of the present invention includes a camera module 100, a torsion spring 200 and a first actuator assembly, wherein the camera module 100 is used to capture images, the torsion spring 200 includes a connecting portion 210, a frame portion 220 and a first torsion arm 240, the connecting portion 210 is connected to the bottom of the camera module 100, the frame portion 220 frames the connecting portion 210, and the connecting portion 210 is rotatably connected to the frame portion 220 through the first torsion arm 240; the first actuator assembly is arranged on the side of the camera module 100, and the first actuator assembly includes a first rotating portion 310, a first fixing portion 320, a first memory alloy wire 330 and The second memory alloy wire 340 and the middle part of the first rotating part 310 are fixedly connected to the connecting part 210, and the first fixing part 320 is located on both sides of the first rotating part 310; the first memory alloy wire 330 is connected to the top of the first rotating part 310 and is connected to the first fixing part 320 on one side, and the second memory alloy wire 340 is connected to the bottom of the first rotating part 310 and is connected to the first fixing part 320 on the other side; the first memory alloy wire 330 and the second memory alloy wire 340 located on both sides of the first rotating part 310 are energized and contracted at the same time to drive the first rotating part 310 to rotate, and the first rotating part 310 drives the camera module 100 to rotate through the connecting part 210.

[0039] For example Figure 2 and Figure 3As shown, the camera module 100 is connected to the connecting part 210 of the torsion spring 200, the first actuator assembly is arranged on the side of the camera module 100, and the first rotating part 310 of the first actuator assembly is fixedly connected to the connecting part 210 of the torsion spring 200, and the first fixed end is arranged at both ends of the first rotating part 310 and fixedly connected to the frame part 220. The first memory alloy wire 330 is connected to the top of the first rotating part 310 and to the first fixed part 320 on one side, and the second memory alloy wire 340 is connected to the bottom of the first rotating part 310 and to the first fixed part 320 on the other side. When the first memory alloy wire 330 and the second memory alloy wire 340 located on both sides of the first rotating part 310 are energized and contracted at the same time, the force generated by the memory alloy wire on the first rotating part 310 will cause the first rotating part 310 to rotate with the first torsion arm 240 as the rotating axis. The first rotating part 310 is fixedly connected to the connecting part 210 of the torsion spring 200, and the connecting part 210 is fixedly connected to the camera module 100. Therefore, the rotation of the first rotating part 310 will drive the connecting part 210 and the camera module 100 to rotate together, thereby quickly adjusting the position of the camera module 100 to play an anti-shake role.

[0040] It is easy to understand that two first memory alloy wires 330 can be arranged on the same side of the lens assembly, and the two first memory alloy wires 330 are respectively connected to the first rotating part 310 and the first fixed part 320 and are arranged on both sides of the first rotating part 310. Alternatively, only one first memory alloy wire 330 can be arranged, so that the middle part of the first memory alloy wire 330 is fixedly connected to the first rotating part 310, and the two ends are respectively connected to the first fixed part 320. The second memory alloy wire 340 is arranged in the same way.

[0041] Through such a configuration, compared with the configuration of coils plus magnets, the micro anti-shake gimbal of the present invention can make the camera device smaller in size and lighter in weight, and by controlling the contraction degree of the first memory alloy wire 330 and the second memory alloy wire 340, the camera module 100 can be controlled more accurately, and no magnetism will be generated to interfere with the camera device.

[0042] In some specific embodiments of the present invention, the first rotating part 310 includes a first plate 510 and a second plate 520, the first plate 510 is fixedly connected to the top wall of the connecting part 210, and the second plate 520 is fixedly connected to the bottom wall of the connecting part 210; the first plate 510 protrudes upward and then bends outward to form a first wire clamp 511, and the second plate 520 protrudes downward and then bends outward to form a second wire clamp 521; the first wire clamp 511 is fixedly connected to the first memory alloy wire 330, and the second wire clamp 521 is fixedly connected to the second memory alloy wire 340.

[0043] For example Figure 3 and Figure 4As shown, the first rotating part 310 also includes a first plate 510 and a second plate 520. The first plate 510 is fixedly connected to the top wall of the connecting part 210, and the second plate 520 is fixedly connected to the bottom wall of the connecting part 210; the first plate 510 protrudes upward and then bends outward to form a first wire clamp 511, and the second plate 520 protrudes downward and then bends outward to form a second wire clamp 521; the first wire clamp 511 is fixedly connected to the first memory alloy wire 330, and the second wire clamp 521 is fixedly connected to the second memory alloy wire 340.

[0044] The first memory alloy wire 330 connects the first wire clamp 511 and the first fixed part 320, and the second memory alloy wire 340 connects the second wire clamp 521 and the first fixed part 320. When the first memory alloy wire 330 and the second memory alloy wire 340 located on both sides of the first rotating part 310 are energized and contracted, the combined torque generated by the forces of the first memory alloy wire 330 and the second memory alloy wire 340 drives the first rotating part 310 to rotate, and the first rotating part 310 drives the connecting part 210 connected thereto to rotate. The rotation of the connecting part 210 drives the camera module 100 to rotate.

[0045] The first rotating part 310 is set in the middle of the connecting part 210 by the first plate 510 and the second plate 520, which facilitates the installation and assembly of the micro anti-shake gimbal. It is easy to understand that for current production and processing, the installation of the equipment is the simplest and fastest by using the machine to install it straight up and down, and in the existing technology, the actuator assembly of the camera equipment is mostly set on the side of the camera module 100, and the installation on the side requires the machine to be installed on the side. However, the difficulty coefficient of the current machine to install on the side is large and the efficiency is not high, and the accuracy is also difficult to grasp. Therefore, through this installation method of the embodiment of the present invention, the second plate 520 can be installed first, and the torsion spring 200 can be installed after the second plate 520 is installed, and then the first plate 510 can be installed. In this way, it does not affect the driving effect of the first actuator assembly on the camera module 100, and it is also conducive to the installation of the micro anti-shake gimbal, which can speed up the installation speed of the micro anti-shake gimbal and reduce the cost of installing the machine. It is easy to understand that the cost of the machine installed on the side is higher than that of the machine installed straight up and down. At the same time, the straight up and down installation is also conducive to the accuracy of the machine control installation and is not prone to errors. At the same time, the arrangement of the first wire clamp 511 and the second wire clamp 521 can ensure the stability of the connection between the first memory alloy wire 330 and the second memory alloy wire 340.

[0046] In some specific embodiments of the present invention, the first fixed portion 320 includes a third plate 530 and a fourth plate 540, the third plate 530 is fixedly connected to the top wall of the frame portion 220, and the fourth plate 540 is fixedly connected to the bottom wall of the frame portion 220; the third plate 530 protrudes upward and then bends outward to form a third wire clamp 531, and the fourth plate 540 protrudes downward and then bends outward to form a fourth wire clamp 541; the third wire clamp 531 is fixedly connected to the first memory alloy wire 330, and the fourth wire clamp 541 is fixedly connected to the second memory alloy wire 340.

[0047] For example Figure 3 and Figure 4 As shown, the first fixing part 320 includes a third plate 530 and a fourth plate 540, the third plate 530 is fixedly connected to the top wall of the frame 220, and the fourth plate 540 is fixedly connected to the bottom wall of the frame 220; the third plate 530 is convex upward and then bent outward to form a third wire clamp 531, and the fourth plate 540 is convex downward and then bent outward to form a fourth wire clamp 541; the third wire clamp 531 is fixedly connected to the first memory alloy wire 330, and the fourth wire clamp 541 is fixedly connected to the second memory alloy wire 340. The arrangement of the third plate 530 and the fourth plate 540 is the same as that of the first plate 510 and the second plate 520, both of which are for the convenience of machine installation, and at the same time, the third wire clamp 531 and the fourth wire clamp 541 ensure the stability and firmness of the connection between the first memory alloy wire 330 and the second memory alloy wire 340.

[0048] In some specific embodiments of the present invention, a second actuator assembly is also included, which is arranged on the torsion spring 200 and located on the adjacent side of the first actuator assembly; the second actuator assembly includes a second rotating part 410, a second fixed part 420, a third memory alloy wire 430 and a fourth memory alloy wire 440, the middle part of the second rotating part 410 is fixedly connected to the frame part 220, and the second fixed part 420 is located on both sides of the second rotating part 410; the third memory alloy wire 430 is connected to the top of the second rotating part 410 and is connected to the second fixed part 420 on one side, and the fourth memory alloy wire 440 is connected to the bottom of the second rotating part 410 and is connected to the second fixed part 420 on the other side; the third memory alloy wire 430 and the fourth memory alloy wire 440 located on both sides of the second rotating part 410 are simultaneously energized and contracted to drive the second rotating part 410 to rotate, and the second rotating part 410 drives the connecting part 210 to rotate through the frame part 220.

[0049] For example Figure 2 and Figure 3As shown, the second actuator assembly is arranged on the torsion spring 200 and is located on the adjacent side of the first actuator assembly. The second actuator assembly includes a second rotating part 410, a second fixed part 420, a third memory alloy wire 430 and a fourth memory alloy wire 440. The middle part of the second rotating part 410 is fixedly connected to the frame part 220, and the frame part 220 is fixedly connected to the connecting part 210 through the first torsion arm 240. The second fixed part 420 is located on both sides of the second rotating part 410, the third memory alloy wire 430 is connected to the top of the second rotating part 410 and connected to the second fixed part 420 on one side, and the fourth memory alloy wire 440 is connected to the bottom of the second rotating part 410 and connected to the second fixed part 420 on the other side. The third memory alloy wire 430 and the fourth memory alloy wire 440 are simultaneously energized and contracted to drive the second rotating part 410 to rotate, and the second rotating part 410 drives the connecting part 210 to rotate through the frame part 220.

[0050] Furthermore, an IC controller 700 is also provided on the torsion spring 200 , and the micro anti-shake gimbal can be driven by controlling the first actuator assembly and the second actuator assembly through the IC controller 700 .

[0051] By setting it in this way, the second actuator assembly can drive the camera module 100 to move quickly and accurately, which facilitates the adjustment of the position of the camera module 100 to achieve the technical effect of anti-shake. At the same time, the second actuator assembly and the first actuator assembly are arranged on adjacent surfaces of the camera module 100, so that the camera module 100 can be adjusted in more directions, which facilitates the adjustment of the position of the camera module 100 and achieves a better anti-shake effect.

[0052] In some specific embodiments of the present invention, the torsion spring 200 also includes a fixed plate 230 and a second torsion arm 250, the second fixed portion 420 is fixedly disposed on the fixed plate 230, the fixed plate 230 frames the frame portion 220 therein, and the frame portion 220 is rotatably connected to the fixed plate 230 through the second torsion arm 250.

[0053] For example Figure 3 and Figure 5 As shown, the torsion spring 200 also includes a fixed plate 230 and a second torsion arm 250. The second fixed portion 420 is fixedly disposed on the fixed plate 230. The fixed plate 230 can be fixedly disposed on the base 600 to maintain a stable position. The fixed plate 230 is hollow in the middle to frame the frame 220 therein, and is rotatably connected to the fixed plate 230 through the second torsion arm 250. When the second actuator assembly drives the frame 220 to rotate, the second torsion arm 250 can act as a rotating shaft, and the second torsion arm 250 has a certain elasticity, which is conducive to the frame 220 driving the connection portion 210 and the camera module 100 to reset.

[0054] In some specific embodiments of the present invention, the second rotating portion 410 also includes a fifth plate 550 and a sixth plate 560, the fifth plate 550 is fixedly connected to the top wall of the frame portion 220, the sixth plate 560 is fixedly connected to the bottom wall of the frame portion 220, the middle portion of the fifth plate 550 protrudes upward and then bends outward to form a fifth wire clamp 551, the middle portion of the sixth plate 560 protrudes downward and then bends outward to form a sixth wire clamp 561; the fifth wire clamp 551 is fixedly connected to the third memory alloy wire 430, and the sixth wire clamp 561 is fixedly connected to the fourth memory alloy wire 440.

[0055] For example Figure 3 and Figure 4 As shown, the second rotating part 410 further includes a fifth plate 550 and a sixth plate 560, the fifth plate is fixedly connected to the top wall of the frame 220, the sixth plate 560 is fixedly connected to the bottom wall of the frame 220, the middle part of the fifth plate 550 protrudes upward and then bends outward to form a fifth wire clamp 551, and the middle part of the sixth plate 560 protrudes downward and then bends outward to form a sixth wire clamp 561. The arrangement of the fifth plate 550 and the sixth plate 560 is similar to that of the first plate 510 and the second plate 520, which is conducive to the installation of the second rotating part 410, and the installation position is more accurate.

[0056] The provision of the fifth wire clamp 551 and the sixth wire clamp 561 facilitates the connection of the third memory alloy wire 430 and the fourth memory alloy wire 440 , so that the positions of the third memory alloy wire 430 and the fourth memory alloy wire 440 remain stable, and is also conducive to the installation of the third memory alloy wire 430 and the fourth memory alloy wire 440 .

[0057] In some specific embodiments of the present invention, the second fixed portion 420 also includes a seventh plate 570 and an eighth plate 580. The seventh plate 570 is fixedly connected to the top wall of the fixed plate 230, and the eighth plate 580 is fixedly connected to the bottom wall of the fixed plate 230. The seventh plate 570 protrudes upward and then bends outward to form a seventh wire clamp 571. The eighth plate 580 protrudes downward and then bends outward to form an eighth wire clamp 581. The seventh wire clamp 571 is fixedly connected to the third memory alloy wire 430, and the eighth wire clamp 581 is fixedly connected to the fourth memory alloy wire 440.

[0058] For example Figure 3 and Figure 4As shown, the second fixing portion 420 also includes a seventh plate 570 and an eighth plate 580, the seventh plate 570 is fixedly connected to the top wall of the fixing plate 230, and the eighth plate 580 is fixedly connected to the bottom wall of the fixing plate 230. The first plate 510 and the second plate 520 are arranged in the same way as the first plate 510 and the second plate 520, which is conducive to the installation of the second fixing portion 420 and the installation of the micro anti-shake gimbal. At the same time, the arrangement of the seventh wire clamp 571 and the eighth wire clamp 581 facilitates the stable position of the third memory alloy wire 430 and the fourth memory alloy wire 440, and is also conducive to the installation of the third memory alloy wire 430 and the fourth memory alloy wire 440.

[0059] In some specific embodiments of the present invention, the micro anti-shake gimbal also includes a base 600, which is fixedly connected to the torsion spring 200. The base 600 is recessed inward to form a accommodating cavity 610, and the bottom wall of the accommodating cavity 610 protrudes upward to form a first protrusion 620, which abuts against the bottom surface of the connecting portion 210.

[0060] For example Figure 3 and Figure 8 As shown, the base 600 is fixedly connected to the fixing plate 230 of the torsion spring 200 to fix the torsion spring 200 on the base 600. The bottom is concavely formed with a receiving cavity 610, and the bottom wall of the receiving cavity 610 is protruding upward to form a first protrusion 620, which abuts against the bottom surface of the connecting portion 210.

[0061] By such arrangement, the position of the torsion spring 200 is conveniently fixed, and the first protrusion 620 abuts against the bottom surface of the connecting portion 210. Furthermore, the first protrusion 620 abuts against the middle part of the connecting portion 210, so that the connecting portion 210 can rotate with the contact point between the first protrusion 620 and the connecting portion 210 as the rotation fixed point. It is easy to understand that the connecting portion 210 is fixedly connected to the camera module 100, and mainly plays the role of driving the camera module 100 to rotate. The connecting portion 210 rotates with the vertex of the first protrusion 620 as the rotation fixed point, which can ensure that the connecting portion 210 drives the camera module 100 to rotate more flexibly and stably, and can also play a supporting role for the rotating portion 210 and the camera module 100.

[0062] When the first actuator assembly and the second actuator assembly drive the connection part 210 to drive the camera module 100 to rotate with the vertex of the first protrusion 620 as the rotation fixed point, the rotation of the camera module 100 can be ensured to be more stable. Furthermore, when the micro anti-shake gimbal is installed, a pre-pressure can be applied to the connection part 210 so that the connection part 210 and the first protrusion 620 are in close contact. At the same time, the first protrusion 620 can support and limit the rotating part 210 and the camera module 100 in the vertical direction, preventing the connection part 210 and the camera module 100 from falling downward under the action of gravity and causing position deviation and failing to collect images well. Furthermore, the shape of the first protrusion 620 is hemispherical.

[0063] In some specific embodiments of the present invention, a second protrusion 621 is protruding upward from the top of the first protrusion 620 , and the second protrusion 621 abuts against the bottom surface of the connecting portion 210 . The first protrusion 620 abuts against the bottom surface of the connecting portion 210 through the second protrusion 621 .

[0064] For example Figure 8 and Fig. 9 As shown, the top of the first protrusion 620 is protruding upwards and provided with a second protrusion 621, and the first protrusion 620 is in contact with the bottom surface of the connecting portion 210 through the second protrusion 621. The second protrusion 621 and the first protrusion 620 are both hemispherical, and the radius of the second protrusion 621 is much smaller than that of the first protrusion 620, so that the area of ​​the point where the connecting portion 210 contacts the first protrusion 620 is smaller, so that the area of ​​the rotation fixed point of the connecting portion 210 can be smaller, which is conducive to the precise rotation of the connecting portion 210, thereby driving the precise rotation of the camera module 100.

[0065] Furthermore, the first protrusion 620 and the second protrusion 621 are integrally formed and can be punched out at one time during the production process, which is convenient for production and manufacturing. Furthermore, a protrusion with a smaller shape or radius can be further set on the second protrusion 621 to abut against the connecting portion 210, so that the connecting portion 210 can rotate with a smaller rotation point. It is easy to understand that in the production and processing process, forming a small contact point by setting a multi-stage step by step is more convenient for manufacturing than directly forming a small contact point, and it is conducive to maintaining the stability of the structure, and the contact point with a smaller area formed by multiple stages can also be directly formed by one stamping, which is also convenient for processing.

[0066] In some specific embodiments of the present invention, a plurality of groups of third protrusions 630 are protruding upward from the bottom wall of the accommodating cavity 610 . The plurality of third protrusions 630 are arranged around the first protrusion 620 , and the top of the third protrusion 630 is lower than the top of the first protrusion 620 .

[0067] For example Figure 8As shown, the bottom wall of the accommodating cavity 610 protrudes upward to be provided with four groups of third protrusions 630, which are arranged around the first protrusion 620 and the top of the third protrusion 630 is lower than the top of the first protrusion 620. Furthermore, the shape of the third protrusion 630 is hemispherical.

[0068] By configuring in this way, the connection part 210 can be limited to a certain extent. When the connection part 210 rotates to a certain extent, it cannot rotate because it hits the third protrusion 630, so that the rotation of the connection part 210 is controlled within a certain range.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0070] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A miniature anti-shake gimbal, characterized in that: include: A camera module, wherein the camera module is used to capture images; A torsion spring, the torsion spring comprising a connecting portion, a frame portion and a first torsion arm, the connecting portion being connected to the bottom of the camera module, the frame portion framing the connecting portion, and the connecting portion being rotatably connected to the frame portion through the first torsion arm; The first actuator assembly is arranged on the side of the camera module, and the first actuator assembly includes a first rotating part, a first fixed part, a first memory alloy wire and a second memory alloy wire. The middle part of the first rotating part is fixedly connected to the connecting part, and the first fixed part is located on both sides of the first rotating part and is fixedly arranged on the frame part; the first memory alloy wire is connected to the top of the first rotating part and is connected to the first fixed part on one side, and the second memory alloy wire is connected to the bottom of the first rotating part and is connected to the first fixed part on the other side; the The first memory alloy wire and the second memory alloy wire are simultaneously energized and contracted to drive the first rotating part to rotate, and the first rotating part drives the camera module to rotate through the connecting part, wherein the first rotating part includes a first plate and a second plate, the first plate is fixedly connected to the top wall of the connecting part, and the second plate is fixedly connected to the bottom wall of the connecting part; the first plate is convex upward and then bent outward to form a first wire clamp, and the second plate is convex downward and then bent outward to form a second wire clamp; the first wire clamp is fixedly connected to the first memory alloy wire, and the second wire clamp is fixedly connected to the second memory alloy wire; and The first fixing part includes a third plate and a fourth plate, the third plate is fixedly connected to the top wall of the frame, and the fourth plate is fixedly connected to the bottom wall of the frame; the third plate protrudes upward and then bends outward to form a third wire clamp, and the fourth plate protrudes downward and then bends outward to form a fourth wire clamp; the third wire clamp is fixedly connected to the first memory alloy wire, and the fourth wire clamp is fixedly connected to the second memory alloy wire.

2. The micro anti-shake gimbal according to claim 1, characterized in that: It also includes a second actuator assembly, which is arranged on the torsion spring and located on the adjacent side of the first actuator assembly; the second actuator assembly includes a second rotating part, a second fixed part, a third memory alloy wire and a fourth memory alloy wire, the middle part of the second rotating part is fixedly connected to the frame part, and the second fixed part is located on both sides of the second rotating part; the third memory alloy wire is connected to the top of the second rotating part and to the second fixed part on one side, and the fourth memory alloy wire is connected to the bottom of the second rotating part and to the second fixed part on the other side; the third memory alloy wire and the fourth memory alloy wire located on both sides of the second rotating part are energized and contracted at the same time to drive the second rotating part to rotate, and the second rotating part drives the connecting part to rotate through the frame part.

3. The micro anti-shake gimbal according to claim 2, characterized in that: The torsion spring further includes a fixing plate and a second torsion arm, the second fixing portion is fixedly disposed on the fixing plate, the fixing plate frames the frame portion therein, and the frame portion is rotatably connected to the fixing plate via the second torsion arm.

4. The micro anti-shake gimbal according to claim 2, characterized in that: The second rotating part also includes a fifth plate and a sixth plate, the fifth plate is fixedly connected to the top wall of the frame, the sixth plate is fixedly connected to the bottom wall of the frame, the middle part of the fifth plate protrudes upward and then bends outward to form a fifth wire clamp, the middle part of the sixth plate protrudes downward and then bends outward to form a sixth wire clamp; the fifth wire clamp is fixedly connected to the third memory alloy wire, and the sixth wire clamp is fixedly connected to the fourth memory alloy wire.

5. The micro anti-shake gimbal according to claim 3, characterized in that: The second fixing portion also includes a seventh plate and an eighth plate, the seventh plate is fixedly connected to the top wall of the fixing plate, and the eighth plate is fixedly connected to the bottom wall of the fixing plate; the seventh plate protrudes upward and then bends outward to form a seventh wire clamp, and the eighth plate protrudes downward and then bends outward to form an eighth wire clamp, the seventh wire clamp is fixedly connected to the third memory alloy wire, and the eighth wire clamp is fixedly connected to the fourth memory alloy wire.

6. The micro anti-shake gimbal according to claim 1, characterized in that: It also includes a base, which is fixedly connected to the torsion spring. The base is recessed inward to form a receiving cavity. The bottom wall of the receiving cavity protrudes upward to form a first protrusion, and the first protrusion abuts against the bottom surface of the connecting part.

7. The micro anti-shake gimbal according to claim 6, characterized in that: A second protrusion is protruded upward from the top of the first protrusion, the second protrusion is in contact with the bottom surface of the connecting portion, and the first protrusion is in contact with the bottom surface of the connecting portion through the second protrusion.

8. The micro anti-shake gimbal according to claim 6, characterized in that: The bottom wall of the accommodating cavity is protruded upward to form a plurality of groups of third protrusions, the plurality of third protrusions are arranged around the first protrusion, and the tops of the third protrusions are lower than the tops of the first protrusions.

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