Thin motor, camera and electronic equipment

Abstract

The invention relates to a thin motor, a camera and an electronic device, the thin motor comprises a shell, a focusing module and an anti-shake module, and the focusing module comprises a focusing carrier and a focusing power unit. The anti-shake carrier is movably connected with the focusing carrier through the balls, the anti-shake power unit drives the anti-shake carrier to move relative to the focusing carrier, the anti-shake power unit comprises an X-axis power unit and two Y-axis power units, and each Y-axis power unit comprises a Hall integrated circuit. The anti-shake module innovatively adopts single-layer ball connection, so that the height of the motor is reduced, the assembly procedures and the number of components are reduced, the cost is reduced, and the competitiveness is improved. In order to avoid X-axis and Y-axis crosstalk, the Y-axis power unit adopts a double-coil, double-magnet and double-IC design, a Hall integrated circuit is used for measuring the relative distance, the rotation angle is calculated according to the relative distance, current compensation is adjusted, crosstalk is effectively solved, stability and high efficiency of anti-shake are guaranteed, and a clear picture is provided.

Description

Technical Field

[0001] The present invention relates to the field of motors, and in particular to a thin motor, a camera and an electronic device. Background Art

[0002] In today's era of rapid technological development, the widespread popularity of electronic devices has led to an increasing market demand for camera motors. At the same time, consumers' expectations for product cost-effectiveness are also getting higher and higher, which is not only reflected in the diversified demands for camera motor functions, but also focuses on the thin and light characteristics of the products. At present, the market has put forward more stringent requirements for camera motors, which not only need to have three-axis closed-loop functions to achieve precise motion control, but also urgently need to achieve thin design to meet the ever-increasing integration needs of various thin and light electronic devices.

[0003] Most traditional ball motors use a double-layer ball structure. In this structure, each layer of balls is provided with guide grooves, and the guide grooves of the two layers of balls are arranged orthogonally. This carefully designed structure can indeed effectively avoid the crosstalk between the X and Y axes, thereby providing a reliable guarantee for the anti-shake effect. However, this traditional structure also inevitably has some limitations. On the one hand, due to its relatively complex structure, it involves more parts and sophisticated assembly processes, resulting in high production costs. On the other hand, the double-layer ball structure itself occupies a certain space height, which undoubtedly brings huge challenges to the thin design of the motor, and it is difficult to adapt to the latest market demand for thinner products. Summary of the invention

[0004] In view of this, the present invention provides a thin motor, and the anti-shake module innovatively adopts a single-layer ball connection to reduce the motor height, reduce the assembly process and the number of parts, reduce costs, and improve competitiveness. In order to avoid X-axis and Y-axis crosstalk, the Y-axis power unit adopts a dual coil, dual magnet and dual IC design. The Hall integrated circuit measures the relative distance, calculates the rotation angle and adjusts the current compensation based on it, effectively solving the crosstalk, ensuring stable and efficient anti-shake, and providing a clear picture.

[0005] The purpose of the present invention is achieved through the following technical solutions: A thin motor comprises a shell, a focus module and an anti-shake module, wherein the focus module comprises a focus carrier movable relative to the shell, and a focus power unit driving the focus carrier to move relative to the shell, the anti-shake module comprises a ball, an anti-shake carrier movably connected to the focus carrier via the ball, and an anti-shake power unit driving the anti-shake carrier to move relative to the focus carrier, the anti-shake power unit comprises an X-axis power unit arranged in the X-axis direction and two Y-axis power units arranged in the Y-axis direction, the Y-axis power unit comprises a Hall integrated circuit, a Y-axis magnet arranged on the anti-shake carrier, and a Y-axis coil opposite to the Y-axis magnet, the Hall integrated circuit is used to measure the distance between the Y-axis coil and the Y-axis magnet, and the X-axis and the Y-axis are perpendicular to each other.

[0006] The anti-shake module is unique and uses a single-layer ball bearing as a connecting medium, so that the anti-shake carrier can be movably connected to the focus carrier through the ball bearing. The previous double-layer ball bearing structure is optimized to a single-layer ball bearing structure, which successfully reduces the overall height of the motor, making it more advantageous in space utilization and better adaptable to various types of equipment with strict space requirements. In addition, the application of the single-layer ball bearing structure significantly reduces the assembly process and the number of parts required, fundamentally reducing production costs and improving the market competitiveness of the product.

[0007] However, while the single-layer ball bearing structure brings convenience, it also causes new problems. Since the single-layer ball bearing structure has no guide groove, it is easy to cause crosstalk between the X-axis and the Y-axis during actual operation, which will undoubtedly have a negative impact on the anti-shake performance, resulting in unstable and blurred images. In order to effectively solve this problem, the R&D team cleverly added an electromagnetic architecture for rotation compensation. Specifically, two Y-axis power units are used in the Y-axis direction to construct an innovative electromagnetic design of dual coils, dual magnets and dual ICs. Two Hall ICs can accurately measure the relative distance between the two Y-axis coils and the corresponding Y-axis magnets. Once the difference between the two distances is detected, the system can quickly calculate the rotation angle of the anti-shake carrier. Subsequently, by accurately adjusting the current of the two Y-axis coils, the rotation angle of the anti-shake carrier is compensated, thereby effectively improving the crosstalk problem between the X and Y axes, ensuring that the anti-shake module can operate stably and efficiently, and providing more stable and clear picture support for shooting.

[0008] Preferably, the two Y-axis power units are arranged side by side.

[0009] The side-by-side setting enables the two Y-axis power units to be rationally arranged within a limited space, reducing unnecessary space occupation, and helping to further reduce the overall height of the motor, making it easier to integrate into various thin and light electronic devices, such as smart phones, tablet computers, etc., meeting the development trend of miniaturization and thinness of modern electronic devices.

[0010] Preferably, the focusing module further comprises a guide post for limiting the moving direction of the focusing carrier, and a groove cooperating with the guide post is provided on the side of the focusing carrier, and the groove can slide relative to the guide post, and the sliding direction is along the height direction of the guide post.

[0011] First, it has achieved remarkable results in improving dynamic tilt. In actual use, especially when the focus carrier moves quickly for focusing operation, dynamic tilt is easily generated due to various factors, which in turn affects the accuracy and stability of focusing. The guide column guiding structure can effectively constrain the moving path of the focus carrier, so that it maintains a stable posture during movement, greatly reducing the generation of dynamic tilt and ensuring a more accurate and reliable focusing process.

[0012] Secondly, this architecture greatly increases the stability of control. Through the close cooperation between the guide column and the groove, the movement of the focus carrier is precisely guided, so that the focus power unit can more accurately control its position and speed when driving the focus carrier to move. This means that in different shooting scenes, whether it is fast switching focus or fine focus adjustment, more stable and smooth focus operation can be achieved, providing a solid guarantee for shooting high-quality images.

[0013] Preferably, the number of the guide posts and the grooves is two, and the two guide posts are arranged in parallel on the same side of the focusing carrier.

[0014] Compared with a single guide post, the dual guide post structure is like laying two precise tracks for the focus carrier, so that when it moves relative to the housing, it can only move in a straight line along the height direction of the guide post, effectively avoiding the possible offset, shaking or twisting of the focus carrier during the movement, and ensuring the high accuracy of the focusing action. In actual shooting scenes, whether shooting static scenes or dynamic objects, this precise guiding mechanism can ensure that the focus carrier moves to the appropriate position quickly and accurately, achieves precise focusing, and thus significantly improves the image quality. In addition, the parallel setting of the two guide posts can jointly constrain the focus carrier from both sides, greatly suppressing the lateral swing of the focus carrier during movement. When the focus power unit drives the focus carrier to move, the dual guide post structure can balance the forces from all directions, so that the focus carrier moves in a straight line in a stable state. This is crucial to improving the stability and reliability of focusing, especially in scenes that require frequent or fast focusing, such as shooting sports events, wild animals, etc., which can effectively reduce the focus errors caused by the swing of the focus carrier and ensure that every photo taken is clear and sharp.

[0015] Preferably, the focus power unit includes a focus magnet arranged on a focus carrier, and a focus coil opposite to the focus magnet, and the two grooves are arranged on two side edges of the focus magnet.

[0016] Two grooves are set on both sides of the focusing magnet. On the one hand, while ensuring the normal operation of the focusing power unit, the cooperation between the grooves and the guide pillars will not be disturbed by the magnetic field, ensuring that the focusing carrier moves stably under the guidance of the guide pillars, further improving the focusing accuracy; on the other hand, this layout helps to optimize the overall structure of the focusing module, making the space utilization of each component more reasonable and maximizing the functions within a limited space.

[0017] Preferably, the focusing power unit is arranged in the Y-axis direction and on the opposite side of the Y-axis power unit.

[0018] From the perspective of space utilization, the positions of different functional units are reasonably divided to avoid mutual interference between components, making the internal structure of the entire thin motor more compact and orderly. In terms of electromagnetic compatibility, the opposite side setting reduces the electromagnetic interference between the focus power unit and the Y-axis power unit, ensuring that both units can work independently and stably. The focus operation and anti-shake operation are performed in different areas without affecting each other, which improves the stability and reliability of the entire motor system. In addition, this layout is also conducive to heat dissipation. The heat generated by different units can be dissipated in relatively independent spaces, avoiding heat accumulation and adverse effects on the performance of each component.

[0019] Preferably, the X-axis power unit includes an X-axis magnet disposed on the anti-shake carrier, and an X-axis coil opposite to the X-axis magnet.

[0020] Preferably, the focusing carrier is provided with a lower ball groove, the anti-shake carrier is provided with an upper ball groove, and the balls are movably arranged in a space enclosed by the lower ball groove and the upper ball groove.

[0021] The balls can roll freely in the space enclosed by the upper and lower ball grooves, allowing the anti-shake carrier to move flexibly in multiple directions relative to the focus carrier, thereby achieving a more comprehensive and accurate anti-shake function. This connection structure has only a single layer of balls, which reduces the overall height of the motor, making it more advantageous in space utilization and better adaptable to various devices with strict space requirements.

[0022] A camera comprises the thin motor as described above.

[0023] An electronic device comprises the camera as described above.

[0024] The beneficial effects of the present invention compared with the prior art are: The thin motor of the present invention has a unique anti-shake module, which uses a single-layer ball bearing as a connecting medium, so that the anti-shake carrier can be movably connected to the focus carrier through the ball bearing. The previous double-layer ball bearing structure is optimized to a single-layer ball bearing structure, which successfully reduces the overall height of the motor, making it more advantageous in space utilization and better adaptable to various types of equipment with strict requirements on space dimensions. In addition, the application of the single-layer ball bearing structure significantly reduces the assembly process and the number of parts required, which fundamentally reduces the production cost and improves the market competitiveness of the product.

[0025] However, while the single-layer ball bearing structure brings convenience, it also causes new problems. Since the single-layer ball bearing structure has no guide groove, it is easy to cause crosstalk between the X-axis and the Y-axis during actual operation, which will undoubtedly have a negative impact on the anti-shake performance, resulting in unstable and blurred images. In order to effectively solve this problem, the R&D team cleverly added an electromagnetic architecture for rotation compensation. Specifically, two Y-axis power units are used in the Y-axis direction to construct an innovative electromagnetic design of dual coils, dual magnets and dual ICs. Two Hall ICs can accurately measure the relative distance between the two Y-axis coils and the corresponding Y-axis magnets. Once the difference between the two distances is detected, the system can quickly calculate the rotation angle of the anti-shake carrier. Subsequently, by accurately adjusting the current of the two Y-axis coils, the rotation angle of the anti-shake carrier is compensated, thereby effectively improving the crosstalk problem between the X and Y axes, ensuring that the anti-shake module can operate stably and efficiently, and providing more stable and clear picture support for shooting. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 FIG. 4 is an exploded view of a thin motor according to an embodiment of the present invention.

[0028] Figure 2 FIG. 1 is a partial exploded view of a thin motor according to an embodiment of the present invention.

[0029] Figure 3 FIG. 1 is a partial exploded view of another state of a thin motor according to an embodiment of the present invention.

[0030] Figure 4 A partial exploded view of a thin motor from another perspective according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0033] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the application product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present application 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 cannot be understood as a limitation on the present application.

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0035] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0036] The present embodiment provides a thin motor, including a housing 100, a focus module 200 and an anti-shake module. The focus module 200 includes a focus carrier 210 movable relative to the housing 100, and a focus power unit 220 driving the focus carrier 210 to move relative to the housing 100. The anti-shake module includes a ball 300, an anti-shake carrier 400 movably connected to the focus carrier 210 through the ball 300, and an anti-shake power unit 500 driving the anti-shake carrier 400 to move relative to the focus carrier 210. The anti-shake power unit 500 includes an X-axis power unit 510 arranged in the X-axis direction and two Y-axis power units 520 arranged in the Y-axis direction. The Y-axis power unit 520 includes a Hall integrated circuit 521, a Y-axis magnet 522 arranged on the anti-shake carrier 400, and a Y-axis coil 523 opposite to the Y-axis magnet 522. The Hall integrated circuit 521 is used to measure the distance between the Y-axis coil 523 and the Y-axis magnet 522. The X-axis and the Y-axis are perpendicular to each other.

[0037] The anti-shake module is unique and uses a single-layer ball 300 as a connecting medium, so that the anti-shake carrier 400 can be movably connected to the focus carrier 210 through the ball 300. The previous double-layer ball 300 structure is optimized to a single-layer ball 300 structure, which successfully reduces the overall height of the motor, making it more advantageous in space utilization and better adaptable to various types of equipment with strict space requirements. In addition, the application of the single-layer ball 300 structure significantly reduces the assembly process and the number of parts required, fundamentally reducing production costs and improving the market competitiveness of the product.

[0038] However, while the single-layer ball bearing 300 structure brings convenience, it also causes new problems. Since the single-layer ball bearing 300 structure has no guide groove, it is easy to cause crosstalk between the X-axis and the Y-axis during actual operation, which will undoubtedly have a negative impact on the anti-shake performance, resulting in unstable and blurred images. In order to effectively solve this problem, the R&D team cleverly added an electromagnetic architecture for rotation compensation. Specifically, two Y-axis power units 520 are used in the Y-axis direction to construct an innovative electromagnetic design of dual coils, dual magnets and dual ICs. Two Hall ICs 521 (hallIC) can accurately measure the relative distance between the two Y-axis coils 523 and the corresponding Y-axis magnets 522. Once the difference between the two distances is detected, the system can quickly calculate the rotation angle of the anti-shake carrier 400. Subsequently, by accurately adjusting the current of the two Y-axis coils 523, the rotation angle of the anti-shake carrier 400 is compensated, thereby effectively improving the crosstalk problem between the X and Y axes, ensuring that the anti-shake module can operate stably and efficiently, and providing more stable and clear picture support for shooting.

[0039] In this embodiment, two Y-axis power units 520 are arranged side by side.

[0040] The side-by-side arrangement enables the two Y-axis power units 520 to be rationally arranged within a limited space, reduces unnecessary space occupation, and helps to further reduce the overall height of the motor, making it easier to integrate into various thin and light electronic devices, such as smart phones, tablet computers, etc., meeting the development trend of miniaturization and thinness of modern electronic devices.

[0041] In this embodiment, the focusing module 200 also includes a guide column 230 for limiting the moving direction of the focusing carrier 210. The side of the focusing carrier 210 is provided with a groove 211 that cooperates with the guide column 230. The groove 211 can slide relative to the guide column 230, and the sliding direction is along the height direction of the guide column 230.

[0042] First, it has significant effects in improving dynamic tilt angle. In actual use, especially when the focus carrier 210 moves quickly for focusing operation, dynamic tilt angle is easily generated due to various factors, which in turn affects the accuracy and stability of focusing. The guide structure of the guide column 230 can effectively constrain the moving path of the focus carrier 210, so that it maintains a stable posture during the movement, greatly reducing the generation of dynamic tilt angle, and ensuring that the focusing process is more accurate and reliable.

[0043] Secondly, this architecture greatly increases the stability of control. Through the close cooperation between the guide column 230 and the groove 211, the movement of the focus carrier 210 is accurately guided, so that the focus power unit 220 can more accurately control its position and speed when driving the focus carrier 210 to move. This means that in different shooting scenes, whether it is fast switching focus or fine focus adjustment, a more stable and smooth focus operation can be achieved, providing a solid guarantee for shooting high-quality images.

[0044] In this embodiment, the number of the guide pillars 230 and the grooves 211 is two, and the two guide pillars 230 are arranged in parallel on the same side of the focusing carrier 210 .

[0045] Compared with a single guide post 230, the dual guide post structure is like laying two precise tracks for the focus carrier 210, so that when it moves relative to the housing 100, it can only move in a straight line along the height direction of the guide post 230, effectively avoiding the possible offset, shaking or twisting of the focus carrier 210 during the movement, and ensuring the high accuracy of the focusing action. In actual shooting scenes, whether shooting static scenes or dynamic objects, this precise guiding mechanism can ensure that the focus carrier 210 moves quickly and accurately to the appropriate position, achieves precise focusing, and thus significantly improves the image quality. In addition, the parallel arrangement of the two guide posts 230 can jointly constrain the focus carrier 210 from both sides, greatly suppressing the lateral swing of the focus carrier 210 during the movement. When the focus power unit 220 drives the focus carrier 210 to move, the dual guide post 230 structure can balance the forces from all directions, so that the focus carrier 210 can move in a straight line in a stable state. This is crucial for improving the stability and reliability of focus, especially in scenarios that require frequent or fast focus, such as shooting sports events, wildlife, etc. It can effectively reduce focus errors caused by the swing of the focus carrier 210, ensuring that every photo taken is clear and sharp.

[0046] In this embodiment, the focus power unit 220 includes a focus magnet 221 disposed on the focus carrier 210 , and a focus coil 222 opposite to the focus magnet 221 , and two grooves 211 are disposed on two sides of the focus magnet 221 .

[0047] Two grooves 211 are arranged on both sides of the focusing magnet 221. On the one hand, while ensuring the normal operation of the focusing power unit 220, the cooperation between the groove 211 and the guide column 230 will not be disturbed by the magnetic field, ensuring that the focusing carrier 210 moves stably under the guidance of the guide column 230, further improving the focusing accuracy; on the other hand, this layout method helps to optimize the overall structure of the focusing module 200, make the space utilization of each component more reasonable, and maximize the function within a limited space.

[0048] In this embodiment, the focus power unit 220 is disposed in the Y-axis direction and is disposed on the opposite side of the Y-axis power unit 520 .

[0049] From the perspective of space utilization, the positions of different functional units are reasonably divided to avoid mutual interference between components, making the internal structure of the entire thin motor more compact and orderly. In terms of electromagnetic compatibility, the opposite side setting reduces the electromagnetic interference between the focus power unit 220 and the Y-axis power unit 520, ensuring that both units can work independently and stably. The focusing operation and the anti-shake operation are performed in different areas without affecting each other, which improves the stability and reliability of the entire motor system. In addition, this layout is also conducive to heat dissipation. The heat generated by different units can be dissipated in relatively independent spaces, avoiding heat accumulation from having adverse effects on the performance of each component.

[0050] In this embodiment, the X-axis power unit 510 includes an X-axis magnet 511 disposed on the anti-shake carrier 400 , and an X-axis coil 512 opposite to the X-axis magnet 511 .

[0051] The housing 100 includes a base 110 and an upper cover 120 . The X-axis magnet 511 and the Y-axis magnet 522 are fixed to the anti-shake carrier 400 via a buckle 130 .

[0052] In this embodiment, the focus carrier 210 is provided with a lower ball groove 211 , the anti-shake carrier 400 is provided with an upper ball groove 410 , and the ball 300 is movably disposed in a space enclosed by the lower ball groove 211 and the upper ball groove 410 .

[0053] The balls 300 can roll freely in the space enclosed by the upper and lower ball grooves 211, so that the anti-shake carrier 400 can flexibly move in multiple directions relative to the focus carrier 210, thereby achieving a more comprehensive and accurate anti-shake function. This connection structure has only a single layer of balls 300, which reduces the overall height of the motor, making it more advantageous in space utilization and better adaptable to various devices with strict space requirements.

[0054] Although 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 appended claims and their equivalents.

Claims

1. A thin motor, characterized in that: The invention comprises a shell, a focus module and an anti-shake module, wherein the focus module comprises a focus carrier movable relative to the shell, and a focus power unit driving the focus carrier to move relative to the shell, the anti-shake module comprises a ball, an anti-shake carrier movably connected to the focus carrier via the ball, and an anti-shake power unit driving the anti-shake carrier to move relative to the focus carrier, the anti-shake power unit comprises an X-axis power unit arranged in the X-axis direction and two Y-axis power units arranged in the Y-axis direction, the Y-axis power unit comprises a Hall integrated circuit, a Y-axis magnet arranged on the anti-shake carrier, and a Y-axis coil opposite to the Y-axis magnet, the Hall integrated circuit is used to measure the distance between the Y-axis coil and the Y-axis magnet, and the X-axis and the Y-axis are perpendicular to each other.

2. The thin motor according to claim 1, characterized in that: The two Y-axis power units are arranged side by side.

3. The thin motor according to claim 1, characterized in that: The focusing module also includes a guide post for limiting the moving direction of the focusing carrier. The side of the focusing carrier is provided with a groove that cooperates with the guide post. The groove can slide relative to the guide post, and the sliding direction is along the height direction of the guide post.

4. The thin motor according to claim 3, characterized in that: The number of the guide posts and the grooves is two, and the two guide posts are arranged in parallel on the same side of the focusing carrier.

5. The thin motor according to claim 1, characterized in that: The focus power unit comprises a focus magnet arranged on a focus carrier and a focus coil opposite to the focus magnet, and the two grooves are arranged on two side edges of the focus magnet.

6. The thin motor according to claim 1, characterized in that: The focusing power unit is arranged in the Y-axis direction and is arranged on the opposite side of the Y-axis power unit.

7. The thin motor according to claim 1, characterized in that: The X-axis power unit includes an X-axis magnet disposed on an anti-shake carrier and an X-axis coil opposite to the X-axis magnet.

8. The thin motor according to claim 1, characterized in that: The focusing carrier is provided with a lower ball groove, the anti-shake carrier is provided with an upper ball groove, and the balls are movably arranged in a space enclosed by the lower ball groove and the upper ball groove.

9. A camera, characterized in that: It comprises a thin motor as claimed in any one of claims 1 to 8.

10. An electronic device, characterized in that: Comprising the camera as claimed in claim 9.

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