Mini anti-shake gimbal

Abstract

The present invention discloses a micro anti-shake gimbal. The micro anti-shake gimbal includes a base, a camera module, and a first actuator assembly. The camera module is disposed on the base; the first actuator assembly is disposed on the side of the camera module. The first actuator assembly includes a first fixing plate, a first rotating plate, a second rotating plate, and a first shape memory alloy wire. One end of the first rotating plate is rotatably connected to the base, and the other end is connected to the camera module; one end of the second rotating plate is connected to the first rotating plate, and the other end is connected to the first shape memory alloy wire; the first fixing plate is fixedly disposed on the base; one end of the first shape memory alloy wire is connected to the second rotating plate, and the other end is connected to the first fixing plate. When the first shape memory alloy wire is energized and contracts, it drives the second rotating plate to drive the first rotating plate to rotate, and the rotation of the first rotating plate drives the camera module to rotate relative to the base.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-shake gimbals, and particularly to a micro anti-shake gimbal. Background Art

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

[0003] To solve the above problems, many anti-shake technologies have emerged in the market. Among them, the better one is anti-shake through a micro anti-shake gimbal. Micro gimbal anti-shake drives the entire camera module including the lens and the image sensor to move to achieve the anti-shake effect. Existing micro gimbal anti-shakes all use a coil plus a magnet for driving. However, the driving force of the coil and the magnet for driving the camera module in this way is too small, and the occupied volume is also relatively large. At the same time, the magnetism of the coil and the magnet will interfere with the image collection of the camera module. Summary of the Invention

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

[0005] The micro anti-shake gimbal according to an embodiment of the present invention includes a base, a camera module, and a first actuator assembly. The camera module is disposed on the base; the first actuator assembly is disposed on the side of the camera module. The first actuator assembly includes a first fixing plate, a first rotating plate, a second rotating plate, and a first shape memory alloy wire. One end of the first rotating plate is rotatably connected to the base, and the other end is connected to the camera module; one end of the second rotating plate is connected to the first rotating plate, and the other end is connected to the first shape memory alloy wire; the first fixing plate is fixedly disposed on the base; one end of the first shape memory alloy wire is connected to the second rotating plate, and the other end is connected to the first fixing plate. When the first shape memory alloy wire is energized and shrinks, it drives the second rotating plate to drive the first rotating plate to rotate, and the rotation of the first rotating plate drives the camera module to rotate relative to the base.

[0006] The micro anti-shake gimbal according to the embodiments of the present invention has at least the following technical effects: The two ends of the first shape memory alloy wire are respectively connected to the first fixed plate and the second rotating plate. When the first shape memory alloy wire is energized and contracts, the first shape memory alloy wire drives the second rotating plate to rotate. The second rotating plate is connected to the first rotating plate to drive the first rotating plate to rotate. The first rotating plate is rotatably connected to the base, so it can drive the camera module to rotate relative to the base together, thereby quickly adjusting the position of the camera module. Through such a setting, the micro anti-shake gimbal not only has a fast adjustment speed, but also can accurately control the camera module by controlling the contraction degree of the first shape memory alloy wire. Moreover, the volume of the first actuator assembly is small, so that the volume of the micro anti-shake gimbal can be reduced, which is beneficial to the miniaturization of the volume of the imaging device.

[0007] According to some embodiments of the present invention, the first rotating plate and the second rotating plate are arranged in an L shape, and a first rotating part is formed at the connecting part of the first rotating plate and the second rotating plate. The first rotating part is rotatably connected to the base.

[0008] According to some embodiments of the present invention, two first shape memory alloy wires are provided. One first shape memory alloy wire is connected to the top of the first fixed plate and the second rotating plate, and the other first shape memory alloy wire is connected to the bottom of the first fixed plate and the second rotating plate; the two first shape memory alloy wires are arranged in parallel, and the first rotating part is arranged between the two first shape memory alloy wires.

[0009] According to some embodiments of the present invention, a first protrusion and a first through hole that cooperate with each other are provided on the first rotating part and the base. The first protrusion is embedded in the first through hole, and the first rotating part is rotatably connected to the base through the first protrusion and the first through hole.

[0010] According to some embodiments of the present invention, the first actuator assembly further includes a first elastic arm. One end of the first elastic arm is connected to the first rotating plate, and the other end is fixedly connected to the base.

[0011] According to some embodiments of the present invention, a support frame is further included. The camera module is located inside the support frame. The first rotating plate is fixedly connected to the support frame, and the support frame is fixedly connected to the camera module; the camera module is connected to the first rotating plate through the support frame.

[0012] According to some embodiments of the present invention, a second actuator assembly is further included. The second actuator assembly is disposed on the support frame and on the side adjacent to the first actuator assembly. The second actuator assembly includes a second fixing plate, a third rotating plate, a fourth rotating plate, and a second shape memory alloy wire. One end of the third rotating plate is rotatably connected to the support frame, and the other end is connected to the camera module. One end of the fourth rotating plate is connected to the third rotating plate, and the other end is connected to the second shape memory alloy wire. The second fixing plate is fixedly disposed on the support frame. One end of the second shape memory alloy wire is connected to the fourth rotating plate, and the other end is connected to the second fixing plate. When the second shape memory alloy wire is energized and contracts, it drives the fourth rotating plate to drive the third rotating plate to rotate, and the rotation of the third rotating plate drives the camera module to rotate relative to the support frame.

[0013] According to some embodiments of the present invention, the third rotating plate and the fourth rotating plate are arranged in an L shape, and the connecting part of the third rotating plate and the fourth rotating plate forms a second rotating part, and the second rotating part is rotatably connected to the support frame.

[0014] According to some embodiments of the present invention, two second shape memory alloy wires are provided. One second shape memory alloy wire is connected to the top of the second fixing plate and the fourth rotating plate, and the other second shape memory alloy wire is connected to the bottom of the second fixing plate and the fourth rotating plate. The two second shape memory alloy wires are arranged in parallel, and the second rotating part is disposed between the two second shape memory alloy wires.

[0015] According to some embodiments of the present invention, a second protrusion and a second through hole that cooperate with each other are provided on the second rotating part and the support frame. The second protrusion is embedded in the second through hole, and the second rotating part is rotatably connected to the support frame through the second protrusion and the second through hole.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the 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 be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[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 structure of the first actuator assembly of a micro anti-shake gimbal according to an embodiment of the present invention;

[0020] Figure 3Schematic structural diagram of the second actuator assembly of the micro anti-shake gimbal according to an embodiment of the present invention;

[0021] Figure 4 Schematic separation structure diagram of the micro anti-shake gimbal according to an embodiment of the present invention.

[0022] Reference numerals:

[0023] Base 100, first protrusion 110, camera module 200, first fixing plate 310, first rotating plate 320, second rotating plate 330, first rotating part 340, first through hole 341, first shape memory alloy wire 350, first elastic arm 360,

[0024] Support frame 400, second protrusion 410, second fixing plate 510, third rotating plate 520, fourth rotating plate 530, second rotating part 540, second through hole 541, second shape memory alloy wire 550, second elastic arm 560. Detailed implementation manners

[0025] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for facilitating the description of 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 thus should not be construed as limiting the present invention.

[0027] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence of the indicated technical features.

[0028] 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 those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0029] Next, refer to Figures 1 to 4 to describe the micro anti-shake gimbal according to an embodiment of the present invention.

[0030] According to an embodiment of the present invention, a micro anti-shake gimbal includes a base 100, a camera module 200, and a first actuator assembly. The camera module 200 is disposed on the base 100; the first actuator assembly is disposed on the side of the camera module 200. The first actuator assembly includes a first fixing plate 310, a first rotating plate 320, a second rotating plate 330, and a first shape memory alloy wire 350. One end of the first rotating plate 320 is rotatably connected to the base 100, and the other end is connected to the camera module 200; one end of the second rotating plate 330 is connected to the first rotating plate 320, and the other end is connected to the first shape memory alloy wire 350; the first fixing plate 310 is fixedly disposed on the base 100; one end of the first shape memory alloy wire 350 is connected to the second rotating plate 330, and the other end is connected to the first fixing plate 310. When the first shape memory alloy wire 350 is energized and contracts, it drives the second rotating plate 330 to drive the first rotating plate 320 to rotate, and the rotation of the first rotating plate 320 drives the camera module 200 to rotate relative to the base 100.

[0031] For example Figure 1 and Figure 2 As shown, the camera module 200 is disposed on the base 100, the first actuator assembly is disposed on the side of the camera module 200, the first fixing plate 310 is fixedly disposed on the base 100, the first rotating plate 320 is connected to the camera module 200 and rotatably connected to the base 100, and the second rotating plate 330 is connected to the first rotating plate 320. One end of the first shape memory alloy wire 350 is connected to the first fixing plate 310, and the other end is connected to the second rotating plate 330. When the first shape memory alloy wire 350 is energized and contracts, the first shape memory alloy wire 350 pulls the second rotating plate 330 to rotate. Since the second rotating plate 330 is connected to the first rotating plate 320 and the first rotating plate 320 is rotatably connected to the base 100, when the first shape memory alloy wire 350 is energized and contracts, the second rotating plate 330 will drive the first rotating plate 320 to rotate around the base 100 together. The first rotating plate 320 is fixedly connected to the camera module 200, and the rotation of the first rotating plate 320 will drive the camera module 200 to rotate together, thereby playing a role in anti-shake.

[0032] Furthermore, the first fixing plate 310 and the second rotating plate 330 are respectively located on both sides of the first rotating plate 320, so that the first shape memory alloy wire 350 can be arranged longer and generate a greater driving force.

[0033] By driving the camera module 200 to rotate through the energization and contraction of the first shape memory alloy wire 350 for anti-shake, replacing the way of adjusting the position of the camera module 200 by the cooperation of a coil and a magnet, not only is the driving force greater, but also the volume is small, the mass is light, which is beneficial to the miniaturization of the volume of the imaging device, and no magnetism will be generated to interfere with the imaging device.

[0034] In some specific embodiments of the present invention, the first rotating plate 320 and the second rotating plate 330 are arranged in an L shape, and a first rotating portion 340 is formed at the connecting portion of the first rotating plate 320 and the second rotating plate 330. The first rotating portion 340 is rotatably connected to the base 100.

[0035] For example Figure 1 and Figure 2 As shown, the first rotating plate 320 and the second rotating plate 330 are arranged in an L shape, and a first rotating portion 340 is formed at the connecting portion of the first rotating plate 320 and the second rotating plate 330. The first rotating portion 340 is rotatably connected to the base 100. The first rotating plate 320 and the second rotating plate 330 are arranged in an L shape. The bottom of the first rotating plate 320 is rotatably connected to the base 100, and the top is connected to the camera module 200. The second rotating plate 330 is arranged horizontally, one end is connected to the first rotating plate 320, and the other end extends along the side of the first rotating plate 320, and can be arranged along the side of the camera module 200 for a longer length. One end of the first shape memory alloy wire 350 is connected to the first fixing plate 310, and the other end is connected to the end of the second rotating plate 330 away from the first rotating plate 320, so that the first shape memory alloy wire 350 can be arranged along the side of the camera module 200 for a longer length, and the first rotating plate 320 and the second rotating plate 330 are connected in an L shape, which is beneficial to the lever principle. When the first shape memory alloy wire 350 pulls the second rotating plate 330 to rotate, the top of the first rotating plate 320 will rotate a greater distance, so that the camera module 200 moves a longer distance. By such an arrangement, the first shape memory alloy wire 350 can drive the camera module 200 to move a greater distance by contracting to a very small extent, and the driving stroke is greater.

[0036] In some specific embodiments of the present invention, two first shape memory alloy wires 350 are provided. One first shape memory alloy wire 350 is connected to the top of the first fixing plate 310 and the second rotating plate 330, and the other first shape memory alloy wire 350 is connected to the bottom of the first fixing plate 310 and the second rotating plate 330; the two first shape memory alloy wires 350 are arranged in parallel, and the first rotating portion 340 is arranged between the two first shape memory alloy wires 350.

[0037] For example Figure 2As shown, there are two first shape memory alloy wires 350. One is located above the first rotating part 340 and is connected to the top of the first fixing plate 310 and the second rotating plate 330, and the other is located below the first rotating part 340 and is connected to the bottom of the first fixing plate 310 and the second rotating plate 330. By setting it in this way, the second rotating plate 330 can rotate in more directions. When the first shape memory alloy wire 350 above the first rotating part 340 is energized and shrinks, it can drive the second rotating plate 330 to rotate upward. When the first shape memory alloy wire 350 below the second rotating part 540 is energized and shrinks, it can drive the second rotating plate 330 to rotate downward. By using the two first shape memory alloy wires 350 in cooperation, the camera module 200 can rotate in more directions and rotate more flexibly.

[0038] In some specific embodiments of the present invention, a first protrusion 110 and a first through hole 341 are provided on the first rotating part 340 and the base 100, and the first protrusion 110 is embedded in the first through hole 341. The first rotating part 340 is rotatably connected to the base 100 through the first protrusion 110 and the first through hole 341.

[0039] For example Figure 2 and Figure 4 As shown, a first through hole 341 is provided on the first rotating part 340, and a first protrusion 110 is provided at the corresponding position on the base 100. The first protrusion 110 is embedded in the first through hole 341, and the first rotating part 340 realizes the rotational connection between the first rotating plate 320 and the base 100 by the way that the first protrusion 110 is embedded in the first through hole 341. It should be understood that the first protrusion 110 can also be provided on the first rotating part 340, and the first through hole 341 is provided on the base 100, and similar effects can be achieved.

[0040] In some specific embodiments of the present invention, the first actuator assembly further includes a first elastic arm 360. One end of the first elastic arm 360 is connected to the first rotating plate 320, and the other end is fixedly connected to the base 100.

[0041] For example Figure 2 and Figure 4 As shown, the first actuator assembly further includes a first elastic arm 360. One end of the first elastic arm 360 is connected to the first rotating plate 320, and the other end is fixedly connected to the base 100. When the force that drives the first rotating plate 320 to rotate by the first shape memory alloy wire 350 disappears, the first elastic arm 360 can reset the first rotating plate 320, and the reset of the first rotating plate 320 can drive the camera module 200 to reset. Further, the first elastic arm 360 is provided on the other side of the second rotating plate 330.

[0042] The provision of the first elastic arm 360 facilitates the reset of the camera module 200 after rotation.

[0043] In some specific embodiments of the present invention, there is also a support frame 400. The camera module 200 is located within the support frame 400. The first rotating plate 320 is fixedly connected to the support frame 400, and the support frame 400 is fixedly connected to the camera module 200; the camera module 200 is connected to the first rotating plate 320 through the support frame 400.

[0044] For example Figure 1 and Figure 4 As shown, the camera module 200 is disposed within the support frame 400. The bottom of the first rotating plate 320 is rotatably connected to the base 100, and the top is fixedly connected to the support frame 400. The support frame 400 is fixedly connected to the camera module 200, and the camera module 200 is connected to the first rotating plate 320 through the support frame 400. When the first shape memory alloy wire 350 is energized and contracts, it drives the second rotating plate 330 to rotate. The rotation of the second rotating plate 330 drives the first rotating plate 320 to rotate relative to the base 100. The first rotating plate 320 is fixedly connected to the support frame 400, and the support frame 400 is connected to the camera module 200. Therefore, the rotation of the first rotating plate 320 relative to the base 100 will drive the support frame 400 to rotate relative to the base 100, thereby driving the camera module 200 to rotate, playing a role in anti-shake.

[0045] In some specific embodiments of the present invention, there is also a second actuator assembly. The second actuator assembly is disposed on the support frame 400 and on the side adjacent to the first actuator assembly; the second actuator assembly includes a second fixing plate 510, a third rotating plate 520, a fourth rotating plate 530, and a second shape memory alloy wire 550. One end of the third rotating plate 520 is rotatably connected to the support frame 400, and the other end is connected to the camera module 200; one end of the fourth rotating plate 530 is connected to the third rotating plate 520, and the other end is connected to the second shape memory alloy wire 550; the second fixing plate 510 is fixedly disposed on the support frame 400; one end of the second shape memory alloy wire 550 is connected to the fourth rotating plate 530, and the other end is connected to the second fixing plate 510. When the second shape memory alloy wire 550 is energized and contracts, it drives the fourth rotating plate 530 to drive the third rotating plate 520 to rotate, and the rotation of the third rotating plate 520 drives the camera module 200 to rotate relative to the support frame 400.

[0046] For example Figure 3 and Figure 4As shown in the figure, the micro anti-shake gimbal further includes a second actuator assembly, which is disposed on the support frame 400 and on the side adjacent to the first actuator. The second actuator assembly includes a second fixing plate 510, a third rotating plate 520, a fourth rotating plate 530, and a second shape memory alloy wire 550. One end of the third rotating plate 520 is rotatably connected to the support frame 400, and the other end is connected to the camera module 200. One end of the fourth rotating plate 530 is connected to the third rotating plate 520, and the other end is connected to the second shape memory alloy wire 550. The second fixing plate 510 is fixedly disposed on the support frame 400. Further, the first fixing plate 310 and the fourth rotating plate 530 are located at both ends of the third rotating plate 520, so that the second shape memory alloy wire 550 can be arranged with a longer length. One end of the second shape memory alloy wire 550 is connected to the fourth rotating plate 530, and the other end is connected to the second fixing plate 510. When the second shape memory alloy wire 550 is energized and contracts, it can drive the fourth rotating plate 530 to rotate. When the fourth rotating plate 530 rotates, it drives the third rotating plate 520 to rotate. The third rotating plate 520 is fixedly connected to the camera module 200. When the third rotating plate 520 rotates, the camera module 200 rotates relative to the support frame 400, playing a role in anti-shake. Since the second actuator assembly is disposed on the side adjacent to the first actuator assembly, the first actuator assembly and the second actuator assembly can drive the camera module 200 to rotate from different directions.

[0047] Through the arrangement of the support frame 400 and the second actuator assembly, the camera module 200 can rotate in different directions, with higher degrees of freedom and more flexible rotation.

[0048] In some specific embodiments of the present invention, the third rotating plate 520 and the fourth rotating plate 530 are arranged in an L shape, and the connecting portion of the third rotating plate 520 and the fourth rotating plate 530 forms a second rotating portion 540, and the second rotating portion 540 is rotatably connected to the support frame 400.

[0049] For example Figure 3 and Figure 4As shown, one end of the third rotating plate 520 and the fourth rotating plate 530 are connected to each other, and the connection part forms a second rotating part 540. The second rotating part 540 is rotatably connected to the support frame 400. The third rotating plate 520 and the fourth rotating plate 530 are connected in an L shape. The bottom of the third rotating plate 520 is rotatably connected to the support frame 400, and the top is connected to the camera module 200. The fourth rotating plate 530 is arranged horizontally, one end is connected to the third rotating plate 520, and the other end extends along the side of the support frame 400, and the rightmost end is connected to the second shape memory alloy wire 550. Through such a setting, the connection between the third rotating plate 520 and the fourth rotating plate 530 can play the role of a lever, which can facilitate the driving of the camera module 200 by the second shape memory alloy wire 550. At the same time, the second fixing plate 510 and the fourth rotating plate 530 are arranged at both ends of the third rotating plate 520, so that the length of the second shape memory alloy wire 550 can be set longer and the driving force is greater.

[0050] In some specific embodiments of the present invention, two second shape memory alloy wires 550 are provided. One second shape memory alloy wire 550 is connected to the top of the second fixing plate 510 and the fourth rotating plate 530, and the other second shape memory alloy wire 550 is connected to the bottom of the second fixing plate 510 and the fourth rotating plate 530; the two second shape memory alloy wires 550 are arranged in parallel, and the second rotating part 540 is arranged between the two second shape memory alloy wires 550.

[0051] For example Figure 1 and Figure 3 As shown, two second shape memory alloy wires 550 are provided. One is located above the second rotating part 540 and is connected to the top of the second fixing plate 510 and the fourth rotating plate 530, and the other is located below the second rotating part 540 and is connected to the bottom of the second fixing plate 510 and the fourth rotating plate 530. Through such a setting, the third rotating plate 520 can rotate both clockwise and counterclockwise, and there are more directions in which it can rotate. When the second shape memory alloy wire 550 located above the second rotating part 540 is energized and shrinks, it can drive the third rotating plate 520 to rotate upward. When the second shape memory alloy wire 550 located below the second rotating part 540 is energized and shrinks, it can drive the third rotating plate 520 to rotate downward. The cooperation of the two second shape memory alloy wires 550 makes the camera module 200 rotate in more directions and rotate more flexibly.

[0052] In some specific embodiments of the present invention, the second rotating part 540 and the support frame 400 are provided with a second protrusion 410 and a second through hole 541 that cooperate with each other. The second rotating part 540 is rotatably connected to the support frame 400 through the second protrusion 410 and the second through hole 541.

[0053] For example Figure 1 and Figure 4As shown, a second through-hole 541 is provided on the second rotating part 540, and a second protrusion 410 is provided at a corresponding position on the support frame 400. The second protrusion 410 is embedded in the second through-hole 541, and the second rotating part 540 realizes the rotational connection between the second rotating plate 330 and the support frame 400 by the way that the second protrusion 410 is embedded in the second through-hole 541. It should be understood that the second protrusion 410 can also be provided on the second rotating part 540, and the second through-hole 541 is provided on the support frame 400, which can achieve similar effects. Further, the connection between the support frame 400 and the second rotating part 540 can also be rotationally connected by means of the setting of balls and through-holes.

[0054] Further, the second actuator assembly further includes a second elastic arm 560. For example Figure 2 and Figure 4 As shown, one end of the second elastic arm 560 is connected to the third rotating plate 520, and the other end is fixedly connected to the support frame 400. When the force that drives the fourth rotating plate 530 to rotate by the second shape memory alloy wire 550 disappears, the second elastic arm 560 can reset the third rotating plate 520, and the reset of the third rotating plate 520 can drive the camera module 200 to reset. Further, the second elastic arm 560 is provided on the other side of the second rotating plate 330. Through the setting of the second elastic arm 560, it is convenient for the camera module 200 to reset after rotation.

[0055] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A micro anti-shake gimbal, characterized in that, Comprising: A base; A camera module, which is disposed on the base; A first actuator assembly, which is disposed on the side of the camera module. The first actuator assembly includes a first fixing plate, a first rotating plate, a second rotating plate and a first shape memory alloy wire. One end of the first rotating plate is rotatably connected to the base, and the other end is connected to the camera module. The first rotating plate and the second rotating plate are arranged in an L shape. One end of the second rotating plate is connected to the first rotating plate, and the connection part of the two forms a first rotating part, which is rotatably connected to the base, and the other end is connected to the first shape memory alloy wire. The first fixing plate is fixedly disposed on the base; One end of the first shape memory alloy wire is connected to the second rotating plate, and the other end is connected to the first fixing plate. When the first shape memory alloy wire is energized and shrinks, it drives the second rotating plate to drive the first rotating plate to rotate. The rotation of the first rotating plate drives the camera module to rotate relative to the base. The first actuator assembly further includes a first elastic arm, one end of which is connected to the first rotating plate, and the other end is fixedly connected to the base; There are two first shape memory alloy wires. One first shape memory alloy wire connects the top of the first fixing plate and the second rotating plate, and the other first shape memory alloy wire connects the bottom of the first fixing plate and the second rotating plate. The two first shape memory alloy wires are arranged in parallel, and the first rotating part is disposed between the two first shape memory alloy wires. When the first shape memory alloy wire above the first rotating part is energized and shrinks, it can drive the second rotating plate to rotate upward. When the first shape memory alloy wire below the first rotating part is energized and shrinks, it can drive the second rotating plate to rotate downward.

2. The micro anti-shake gimbal according to claim 1, wherein The first rotating part and the base are provided with a first protrusion and a first through hole that cooperate with each other. The first protrusion is embedded in the first through hole, and the first rotating part is rotatably connected to the base through the first protrusion and the first through hole.

3. The micro anti-shake gimbal according to claim 1, characterized in that, It further includes a support frame. The camera module is located within the support frame. The first rotating plate is fixedly connected to the support frame, and the support frame is fixedly connected to the camera module. The camera module is connected to the first rotating plate through the support frame.

4. The micro anti-shake gimbal according to claim 3, characterized in that, It further includes a second actuator assembly, which is arranged on the support frame and located on the side adjacent to the first actuator assembly; the second actuator assembly includes a second fixing plate, a third rotating plate, a fourth rotating plate and a second shape memory alloy wire, one end of the third rotating plate is rotatably connected to the support frame, and the other end is connected to the camera module; one end of the fourth rotating plate is connected to the third rotating plate, and the other end is connected to the second shape memory alloy wire; the second fixing plate is fixedly arranged on the support frame; one end of the second shape memory alloy wire is connected to the fourth rotating plate, and the other end is connected to the second fixing plate. When the second shape memory alloy wire is energized and shrinks, it drives the fourth rotating plate to drive the third rotating plate to rotate, and the rotation of the third rotating plate drives the camera module to rotate relative to the support frame.

5. The micro anti-shake gimbal according to claim 4, characterized in that, The third rotating plate and the fourth rotating plate are arranged in an L shape, and the connecting part of the third rotating plate and the fourth rotating plate forms a second rotating part, and the second rotating part is rotatably connected to the support frame.

6. The micro anti-shake gimbal according to claim 5, characterized in that, There are two second shape memory alloy wires. One second shape memory alloy wire is connected to the top of the second fixing plate and the fourth rotating plate, and the other second shape memory alloy wire is connected to the bottom of the second fixing plate and the fourth rotating plate; the two second shape memory alloy wires are arranged in parallel, and the second rotating part is arranged between the two second shape memory alloy wires.

7. The micro anti-shake gimbal according to claim 5, wherein, The second rotating part and the support frame are provided with a second protrusion and a second through hole that cooperate with each other. The second protrusion is embedded in the second through hole, and the second rotating part is rotatably connected to the support frame through the second protrusion and the second through hole.

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