Micro gimbal that can achieve large turning angles

Abstract

The present invention relates to a micro gimbal that can realize a large rotation angle, and has a support part, a carrier part and a driving part. The carrier part is used to carry a mobile phone lens module. The carrier part is positioned on the support part and rotates relative to the support part through driving. The rotation of the carrier part is the forward and reverse rotation around the optical axis of the mobile phone lens module, and the forward and reverse rotation is a motion mode divided into at least two levels in the same direction. The driving part is connected between the support part and the carrier part, and gives the carrier part power to rotate relative to the support part. The mobile phone micro gimbal of the present invention is small in size, realizes the application of gimbal technology to mobile phones, and uses a graded motion method to obtain anti-shake at a large rotation angle, improves the imaging quality of the mobile phone lens module, meets the requirements of product miniaturization, and has a lightweight and miniaturized product structure, and reduces the manufacturing cost. At the same time, the control is simple and accurate, and it is suitable for popularization and utilization.

Description

Technical Field

[0001] The present invention relates to the technical field of imaging equipment, and in particular to the technical field of mobile phone camera. Background Art

[0002] With the advancement of science and technology, the application of camera modules is becoming more and more extensive. At present, in addition to cameras, mobile phones, computers and other electronic devices are equipped with camera modules to facilitate people to take pictures anytime and anywhere, bringing convenience and fun to people's lives. In order to improve the image quality of smartphones, the anti-shake technology of mobile phone cameras continues to improve. The anti-shake of traditional smartphones is a combination of optical image stabilization (OIS) + electronic image stabilization (EIS). Due to the size of smartphones, the optical image stabilization of traditional mobile phones can only achieve optical image stabilization within a plane, and cannot achieve anti-shake in the front and back directions of the lens; electronic image stabilization is to correct the jitter of the picture through software, which will have a certain loss of image quality.

[0003] The handheld gimbal is a shooting auxiliary device used to install and fix the camera, and to "stabilize" the user's shooting screen through an external physical anti-shake solution. The gimbal anti-shake provides stable and smooth image quality during shooting in motion, mainly using a gyroscope. The gimbal is equipped with a rocker arm that can meet the three-degree-of-freedom activities of the carrier. The rocker arm joint has a motor. When the gimbal shakes, it will be detected by the gyroscope, and then the program will control the corresponding motor to increase the power in the opposite direction. By reversely compensating for the real external shake, the shake is interpolated to prevent the carrier from tilting with the gimbal and avoid shaking.

[0004] However, due to the limitation of the internal space of the mobile phone, it is structurally impossible to reserve enough space for the lens module to move. The above-mentioned gimbal physical anti-shake solution is difficult to transplant into the mobile phone. The reason is that the size is too large, which also affects the application of gimbal technology on smartphones. Summary of the invention

[0005] The purpose of the present invention is to provide a micro gimbal that can achieve a large rotation angle, has a small size, is suitable for applying gimbal technology to mobile phones, and improves the imaging quality of mobile phone lens modules.

[0006] In order to achieve the above object, the present invention adopts the following technical scheme:

[0007] The micro gimbal that realizes large turning angle has the following features:

[0008] Support part,

[0009] A carrier part, the carrier part is used to carry the mobile phone lens module, the carrier part is positioned on the support part and is driven to rotate relative to the support part, the rotation of the carrier part is forward and reverse rotation around the optical axis of the mobile phone lens module, and the forward and reverse rotation is a motion mode of the same direction operation divided into at least two levels;

[0010] The driving part is connected between the supporting part and the carrier part, and provides power for the carrier part to rotate relative to the supporting part.

[0011] The above scheme is further that the carrier part has two mutually embedded first rotating parts and second rotating parts, the first rotating part is connected to the supporting part through a first rotating limiter, the second rotating part is embedded in the first rotating part and connected through a second rotating limiter, and the mobile phone lens module is placed on the second rotating part; the driving part is provided with a first driver and a second driver, the first driver is connected between the first rotating part and the supporting part, the second driver is connected between the first rotating part and the second rotating part, and the first driver and the second driver are independently controlled.

[0012] The above scheme is further that the supporting part and the carrier part are both frame-shaped, and the carrier part is positioned and embedded in the supporting part; the first rotation limiter has a first support ball, which is arranged in a limiting space provided by the first rotating component and the supporting part, and the first support ball guides the first rotating component to rotate relative to the supporting part; the second rotation limiter has a second support ball, which is arranged in a limiting space provided by the second rotating component and the first rotating component, and the second support ball guides the second rotating component to rotate relative to the first rotating component.

[0013] The above scheme is further that the supporting part and the carrier part are both frame-shaped, and the carrier part is positioned and embedded in the supporting part; the first rotation limiter has a first support ball, which is placed in a limiting space provided by the first rotating component and the supporting part, and the first support ball guides the first rotating component to rotate relative to the supporting part; the second rotation limiter is an elastic arm connecting the first rotating component and the second rotating component.

[0014] The above scheme is further that the support part and the carrier part are both frame-shaped, and the carrier part is positioned and embedded in the support part; the first rotation limiter and the second rotation limiter are both in the form of elastic arms, and the first rotation limiter is an elastic arm connecting the first rotating part and the support part; the second rotation limiter is an elastic arm connecting the first rotating part and the second rotating part.

[0015] The above scheme is further that the first rotation limiter and the second rotation limiter are distributed around the optical axis of the mobile phone lens module, and the first rotation limiter and the second rotation limiter are arranged at 90° intervals on a plane perpendicular to the optical axis of the mobile phone lens module.

[0016] The above scheme is further that the first support ball is restrictively arranged in a semi-closed first guide groove provided on the inner circumference of the support part, and the first rotating part is provided with a first tiger's mouth facing the first guide groove, and the first tiger's mouth cooperates with the first guide groove to limit the first support ball, and the first support ball guides the first rotating part to rotate relative to the support part on a plane perpendicular to the optical axis of the mobile phone lens module.

[0017] The above scheme is further that the second support ball is restrictively arranged in a semi-closed second guide groove provided on the inner circumference of the first rotating component, and the second rotating component is provided with a second tiger's mouth facing the second guide groove, and the second tiger's mouth cooperates with the second guide groove to limit the second support ball, and the second support ball guides the second rotating component to rotate relative to the first rotating component on a plane perpendicular to the optical axis of the mobile phone lens module.

[0018] The above solution is further characterized in that both the first driver and the second driver are SMA actuators driven by heat of an SMA wire.

[0019] By adopting the above technical scheme, the mobile phone micro gimbal of the present invention is small in size, and the gimbal technology can be applied to mobile phones. The graded motion method is used to obtain anti-shake at a larger angle, thereby improving the imaging quality of the mobile phone lens module, meeting the requirements of product miniaturization, making the product structure lightweight and miniaturized, and reducing the manufacturing cost. At the same time, the control is simple and precise, and it is suitable for popularization and utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Attached Figure 1 It is a structural schematic diagram of one embodiment of the present invention;

[0021] Attached Figure 2 for Figure 1 A schematic diagram of the structural decomposition of an embodiment;

[0022] Attached Figure 3 It is a structural schematic diagram of a second embodiment of the present invention;

[0023] Attached Figure 4 It is a schematic structural diagram of the third embodiment of the present invention;

[0024] Attached Figure 5 Schematic diagram of the structure of four embodiments of the present invention. DETAILED DESCRIPTION

[0025] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention.

[0026] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] See also Figures 1 to 5 As shown, the present invention is related to a micro-pan head that realizes a large rotation angle, which has a support part 1, a carrier part 2 and a driving part. The carrier part 2 is used to carry a mobile phone lens module 3. The carrier part 2 is positioned on the support part 1 and rotates relative to the support part through driving, thereby giving the mobile phone lens module 3 adjustment, achieving anti-shake effect, and improving the imaging quality of the mobile phone lens module 3. In this scheme, the rotation of the carrier part 2 is the forward and reverse rotation around the optical axis of the mobile phone lens module 3, and the forward and reverse rotation is a motion mode divided into at least two levels of the same direction operation, thereby achieving large-angle motion and increasing anti-shake effect. The driving part is connected between the support part 1 and the carrier part 2, giving the carrier part power to rotate relative to the support part. The preferred driving part of this embodiment is an SMA actuator driven by heat using an SMA wire, which is small in size and can be controlled by using the characteristics of the SMA wire, so as to achieve convenient control, precise and effective control, and improve the performance of the micro-pan head. Of course, for the use of the driving part, the electromagnetic coil driving method can also be selected according to the actual situation, and the power to rotate the carrier part relative to the support part can also be achieved. It will not be described in detail here.

[0028] See also Figures 1 to 5As shown, in this embodiment, the carrier part 2 has two mutually embedded first rotating parts 21 and second rotating parts 22. Furthermore, the support part 1 and the carrier part 2 are both frame-shaped, and the carrier part 2 is positioned and embedded in the support part 1, with a compact structure and a small volume. In the embodiment in the figure, the first rotating part 21 and the second rotating part 22 are hollow flat frames, and the mobile phone lens module 3 is embedded in the second rotating part 22 and linked with the second rotating part 22. The bottom of the mobile phone lens module 3 is also connected to the circuit part 4 by a fitting method, and the circuit part 4 is also embedded in the support part 1. The support part 1 plays a role of accommodation and protection. In the figure, the support part 1 is a U-shaped frame with peripheral wall protection and support. The first rotating component 21 is connected to the supporting part 1 through the first rotation limiter 5, and the second rotating component 22 is embedded in the first rotating component and connected through the second rotation limiter 6, so that the first rotating component 21 rotates relative to the supporting part 1 under the support of the first rotation limiter 5, and the second rotating component 22 rotates relative to the first rotating component under the support of the second rotation limiter 6. The first rotation limiter 5 and the second rotation limiter 6 respectively provide motion guidance and rotation range limitation to achieve anti-shake and protection. In this embodiment, in order to further optimize the structure and control, the driving part is provided with a first driver 71 and a second driver 72, the first driver 71 is connected between the first rotating component 21 and the supporting part 1, and the second driver 72 is connected between the first rotating component 21 and the second rotating component 22, and the first driver 71 and the second driver 72 are independently controlled, the movement is more precise, and the anti-shake effect is improved. In this embodiment, preferably, both the first driver 71 and the second driver 72 are SMA actuators driven by SMA wires powered by electricity and heated. The two ends of the SMA wire of the first driver 71 are respectively fixed to the first terminal 11 provided by the support part 1 and the second terminal 211 provided by the first rotating component 21; the two ends of the SMA wire of the second driver 72 are respectively fixed to the third terminal 212 provided by the first rotating component 21 and the fourth terminal 221 provided by the second rotating component 22. In this embodiment, in order to achieve forward and reverse rotation and increase rotation stability and effectiveness, the first driver 71 and the second driver 72 can be arranged as needed, such as Figures 1 to 4 The four-wire structure on both sides shown can also be Figure 5 The four-side and eight-line symmetrical structure shown is certainly not limited to the above-mentioned arrangement, and will not be illustrated and described one by one here. Other arrangement changes should also fall within the scope of protection of this case.

[0029] Figure 1 , 2As shown in Figure 5, in this embodiment, the first rotation limiter 5 has a first support ball 51, which is placed in the limiting space provided by the first rotating component 21 and the supporting part 1, and the first support ball 51 guides the first rotating component to rotate relative to the supporting part. Further, the first support ball 51 is restrictively placed in a semi-enclosed first guide groove 12 provided on the inner circumference of the supporting part. The first guide groove 12 is composed of a first V-shaped groove 121 directly concavely constructed by the supporting part and an additional first cover plate 122. The first V-shaped groove 121 accommodates the first support ball 51 and obtains direction restriction. The first cover plate 122 presses the first support ball 51 from top to bottom to achieve restriction and anti-slip. In the figure, the first V-shaped groove 121 is directly formed on the inner circumference of the peripheral wall of the supporting part, and the first cover plate 122 is superimposed on the peripheral wall of the supporting part. The first cover plate 122 can be connected to the supporting part by welding or snapping, etc., with a simple structure and convenient assembly and maintenance. The first rotating part 21 is provided with a first jaw 213 facing the first guide groove, and the first jaw 213 embraces the first support ball 51 and protrudes the outer periphery of the first guide groove 12, so that the first jaw 213 cooperates with the first guide groove 12 to limit the first support ball 51, and utilizes the support and guidance of the first support ball 51 to meet the first rotating part 21 relative to the support part 1 on the plane perpendicular to the optical axis of the mobile phone lens module. The second rotation limiter 6 has a second support ball 61, which is placed in the limiting space provided by the second rotating part 22 and the first rotating part 21, and the second support ball 61 guides the second rotating part to rotate relative to the first rotating part. Furthermore, the second support ball 61 is restrictively arranged in a semi-enclosed second guide groove 214 provided on the inner circumferential side of the first rotating component 21. For the convenience of manufacturing, the second guide groove 214 of the present embodiment is composed of a second V-shaped groove 2142 constructed by the recessed groove seat 2141 and an additional second cover plate 2143. The groove seat 2141 is integrally manufactured or combinedly connected with the first rotating component 21. The second V-shaped groove accommodates the second support ball 61 and obtains direction restriction. The second cover plate 2143 presses the second support ball 61 from top to bottom to achieve restriction and anti-detachment. The second cover plate 2143 is superimposed on the groove seat 2141. The second cover plate 2143 can be connected to the groove seat 2141 by welding or snapping. The structure is simple and convenient for assembly and maintenance. The second rotating component 22 is provided with a second tiger's mouth 222 facing the second guide groove, and the second tiger's mouth 222 embraces the second support ball 61 and protrudes from the outer periphery of the second guide groove, so that the second tiger's mouth 222 cooperates with the second guide groove to limit the second support ball, and utilizes the support and guidance of the second support ball to satisfy the second support ball to guide the second rotating component to rotate relative to the first rotating component on a plane perpendicular to the optical axis of the mobile phone lens module.

[0030] Figure 3As shown, this embodiment can also adopt the following method: the first rotation limiter 5 has a first support ball 51, and the first support ball 51 is placed in the limiting space provided by the first rotating component 21 and the supporting part 1. The specific assembly structure is as described above, and the first support ball guides the first rotating component to rotate relative to the supporting part; the second rotation limiter 6 is an elastic arm connecting the first rotating component 21 and the second rotating component 22. At this time, the second rotation limiter 6 can be made integrally with the first rotating component 21 and the second rotating component 22 or combined and connected. The second rotation limiter 6 can be in the form of a single piece, or as shown in the figure, a serpentine elastic part 62 can be provided at one end of the second rotation limiter 6, thereby increasing the guiding effect and obtaining better working performance.

[0031] Figure 4 As shown, the present embodiment can also adopt the following method: the support part 1 and the carrier part 2 are both frame-shaped, and the carrier part 2 is positioned and embedded in the support part 1; the first rotation limiter 5 and the second rotation limiter 6 are both in the form of elastic arms, and the first rotation limiter 5 is an elastic arm connecting the first rotating part 21 and the support part 1. At this time, as shown in the figure, for the convenience of production, the first rotating part 21, the first rotation limiter 5 and the connecting piece 8 can be first produced by stamping or the like, and the connecting piece 8 is respectively outside the first rotating part 21 and leaves a spacing, and then the connecting piece 8 is fixedly connected to the support part 1; the second rotation limiter 6 is an elastic arm connecting the first rotating part 21 and the second rotating part 22. Similarly, the first rotating part 21, the second rotation limiter 6 and the second rotating part 22 can be produced by stamping or the like. The structure is simple, the volume is small, and it is convenient to produce, and it can also meet the requirements of realizing a micro gimbal with a large rotation angle.

[0032] See also Figures 1 to 5 As shown, in this embodiment, the first rotation limiter 5 and the second rotation limiter 6 are distributed around the optical axis of the mobile phone lens module, and the first rotation limiter 5 and the second rotation limiter 6 are arranged at 90° intervals on a plane perpendicular to the optical axis of the mobile phone lens module to obtain a symmetrical structure and improve rotation stability. The specific form can be further designed according to actual needs, and other form changes should also fall within the protection scope of this case.

[0033] The mobile phone micro gimbal of the present invention is small in size, and the gimbal technology can be applied to mobile phones. The graded motion method is used to obtain anti-shake at larger turning angles, thereby improving the imaging quality of the mobile phone lens module, meeting the requirements of product miniaturization, making the product structure lightweight and miniaturized, and reducing the manufacturing cost. At the same time, the control is simple and precise, and is suitable for popularization and utilization.

[0034] Although the preferred specific embodiments of the present invention are described above in conjunction with the accompanying drawings, the present invention should not be limited to the structures and operations that are exactly the same as the above descriptions and drawings. For those skilled in the art, many equivalent improvements and changes can be made to the above embodiments through logical analysis, reasoning or limited experiments without exceeding the concept and scope of the present invention, but these improvements and changes should all fall within the scope of protection required by the present invention.

Claims

1. A micro gimbal that can achieve a large rotation angle, characterized by: have: A supporting part, which is a U-shaped frame; A carrier part, the carrier part is positioned on the support part and rotates relative to the support part by being driven, the rotation of the carrier part is forward and reverse rotation around the optical axis of the mobile phone lens module, and the forward and reverse rotation is a motion mode in which the same direction is operated and divided into at least two levels; A driving part, which is connected between the support part and the carrier part and provides power for the carrier part to rotate relative to the support part; Among them, the carrier part has two mutually embedded first rotating parts and second rotating parts, both of which are hollow flat frames, the first rotating part is connected to the supporting part through a first rotation limiter, the second rotating part is embedded in the first rotating part and connected through a second rotation limiter, and the mobile phone lens module is placed on the second rotating part; the driving part is provided with a first driver and a second driver, the first driver is connected between the first rotating part and the supporting part, the second driver is connected between the first rotating part and the second rotating part, and the first driver and the second driver are independently controlled; the mobile phone lens module is embedded in the second rotating part and linked to the second rotating part, and the bottom of the mobile phone lens module is also connected to the circuit part by a fitting manner, and the circuit part is embedded in the supporting part.

2. The micro gimbal for realizing a large rotation angle according to claim 1, characterized in that: The carrier part is positioned and embedded in the support part; the first rotation limiter has a first support ball, which is arranged in the limiting space provided by the first rotating component and the support part, and the first support ball guides the first rotating component to rotate relative to the support part; The second rotation limiter has a second supporting ball, which is arranged in a limiting space provided by the second rotating component and the first rotating component. The second supporting ball guides the second rotating component to rotate relative to the first rotating component.

3. The micro gimbal for realizing a large rotation angle according to claim 1, characterized in that: The carrier part is positioned and embedded in the support part; the first rotation limiter has a first support ball, which is arranged in the limiting space provided by the first rotating component and the support part, and the first support ball guides the first rotating component to rotate relative to the support part; The second rotation limiter is an elastic arm connecting the first rotation component and the second rotation component.

4. The micro gimbal for realizing a large rotation angle according to claim 1, characterized in that: The carrier part is positioned and embedded in the supporting part; the first rotation limiter and the second rotation limiter are both in the form of elastic arms, the first rotation limiter is an elastic arm connecting the first rotating part and the supporting part; the second rotation limiter is an elastic arm connecting the first rotating part and the second rotating part.

5. The micro gimbal for realizing a large rotation angle according to any one of claims 1 to 4, characterized in that: The first rotation limiter and the second rotation limiter are distributed around the optical axis of the mobile phone lens module, and the first rotation limiter and the second rotation limiter are arranged at 90° intervals on a plane perpendicular to the optical axis of the mobile phone lens module.

6. The micro pan / tilt head for realizing a large rotation angle according to claim 2 or 3, characterized in that: The first support ball is restrictively placed in a semi-closed first guide groove provided on the inner circumference of the support part. The first rotating component is provided with a first tiger's mouth facing the first guide groove. The first tiger's mouth cooperates with the first guide groove to limit the first support ball. The first support ball guides the first rotating component to rotate relative to the support part on a plane perpendicular to the optical axis of the mobile phone lens module.

7. The micro gimbal for realizing a large rotation angle according to claim 2, characterized in that: The second support ball is restrictively arranged in a semi-closed second guide groove provided on the inner circumference of the first rotating component. The second rotating component is provided with a second tiger's mouth facing the second guide groove. The second tiger's mouth cooperates with the second guide groove to limit the second support ball. The second support ball guides the second rotating component to rotate relative to the first rotating component on a plane perpendicular to the optical axis of the mobile phone lens module.

8. The micro gimbal for realizing a large rotation angle according to claim 1, characterized in that: The first driver and the second driver are both SMA actuators driven by heat of an SMA wire.

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