Motor assembly, camera module and terminal device
By using image stabilization and focus drive components in the camera module, combined with guide components, efficient optical image stabilization and autofocus functions are achieved, solving the problem of insufficient driving force in the prior art and improving the image stabilization and focus accuracy of the camera module.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANCHANG O FILM OPTICAL ELECTRONICS TECH CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-06-12
Smart Images
Figure CN224356196U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of camera technology, specifically to a motor assembly, camera module, and terminal device. Background Technology
[0002] In recent years, camera modules with optical image stabilization (OIS) or autofocus (AF) have become standard features in the industry. However, with the continuous improvement of image quality requirements in smart devices, there is an urgent need for a camera module that combines image stabilization and autofocus. Utility Model Content
[0003] In view of the above, it is necessary to provide a motor assembly, a camera module, and a terminal device that have both image stabilization and focusing functions.
[0004] In a first aspect, embodiments of this application provide a motor assembly, comprising: a base having a first receiving cavity; an image stabilization bracket located in the first receiving cavity and movably connected to the base, the image stabilization bracket having a second receiving cavity; an image stabilization drive assembly including a first magnet, a second magnet, two first coils and two second coils, the first magnet and the second magnet being respectively disposed on adjacent sides of the image stabilization bracket and connected to the image stabilization bracket, the two first coils and the two second coils being respectively disposed on the base corresponding to the first magnet and the second magnet, the first magnet and the two first coils being used to drive the image stabilization bracket to move along a first direction, the second magnet and the two second coils being used to drive the image stabilization bracket to move along a second direction, the two first coils being spaced apart along the second direction, and the two second coils being spaced apart along the first direction; a focusing bracket located in the second receiving cavity and movably connected to the image stabilization bracket; a focusing drive assembly connected between the focusing bracket and the image stabilization bracket, used to drive the focusing bracket to move along a third direction; and at least two guide members, the at least two guide members being spaced apart from the image stabilization bracket, the focusing bracket moving along the at least two guide members.
[0005] The aforementioned motor assembly, by incorporating an image stabilization drive component including two first coils and two second coils, with the two first coils spaced apart along a second direction and the two second coils spaced apart along a first direction, and a first magnet and the two first coils driving the image stabilization bracket to move along the first direction, and a second magnet and the two second coils driving the image stabilization bracket to move along the second direction, enables the motor assembly to achieve optical image stabilization. Furthermore, by incorporating a focusing bracket and a focusing drive component, the focusing drive component drives the focusing bracket to move along a third direction, enabling the motor assembly to achieve autofocus, thus combining image stabilization and focusing functions. In addition, the inclusion of two first coils and two second coils increases the driving force between them and the image stabilization bracket, thereby increasing the driving force of the motor assembly, which improves the response speed of the motor assembly in performing image stabilization movement, and thus improves the image stabilization accuracy of the motor assembly. By incorporating at least two guide members, the focusing bracket can move relative to the image stabilization bracket, reducing the friction experienced by the focusing bracket during movement, ensuring smooth movement of the focusing bracket, and simultaneously ensuring the focusing accuracy of the focusing bracket.
[0006] In one embodiment, the motor assembly further includes a rolling element that rollably abuts between the stabilization bracket and the base. The rolling element includes at least three rolling elements. The base has at least three first rolling grooves, and the stabilization bracket has at least three second rolling grooves. The at least three first rolling grooves and the at least three second rolling grooves are arranged opposite to each other to accommodate the corresponding rolling element. The first rolling grooves and the second rolling grooves are both universal grooves.
[0007] The aforementioned motor assembly, by incorporating at least three rolling elements, enables the image stabilization bracket to roll relative to the base, thereby allowing the bracket to move along both the first and second directions. Furthermore, the rolling elements reduce friction during movement, ensuring smooth motion. The aforementioned first and second rolling grooves further reduce friction within these grooves, further ensuring smooth movement of the image stabilization bracket.
[0008] In one embodiment, the two first coils are supplied with power in the same direction to provide magnetic attraction in the same direction to the image stabilization bracket along the first direction, or the two first coils are supplied with power in opposite directions to provide magnetic attraction in opposite directions to the image stabilization bracket along the first direction; the two second coils are supplied with power in the same direction to provide magnetic attraction in the same direction to the image stabilization bracket along the second direction, or the two second coils are supplied with power in opposite directions to provide magnetic attraction in opposite directions to the image stabilization bracket along the second direction.
[0009] In the aforementioned motor assembly, when the anti-shake drive assembly drives the anti-shake bracket to move along a first direction or a second direction, the first coil and the first magnet drive the anti-shake bracket to move along the first direction, or the second coil and the second magnet drive the anti-shake bracket to move along the second direction. If the anti-shake bracket undergoes unexpected rotation while moving along the first direction, power supplies of opposite directions, such as voltage or current, are supplied to the two second coils respectively, so that the two second coils provide magnetic attraction forces of opposite directions to the anti-shake bracket, thereby canceling the unexpected rotation of the anti-shake bracket and making the anti-shake bracket move stably along the first direction. If the anti-shake bracket undergoes unexpected rotation while moving along the second direction, power supplies of opposite directions are supplied to the two first coils respectively, so that the two first coils provide magnetic attraction forces of opposite directions to the anti-shake bracket, thereby canceling the unexpected rotation of the anti-shake bracket and making the anti-shake bracket move stably along the second direction, thereby ensuring the anti-shake accuracy and stability of the motor assembly.
[0010] In one embodiment, the focusing drive assembly includes a first focusing drive member and a second focusing drive member. The first focusing drive member is disposed on the focusing bracket, and the second focusing drive member is disposed on the image stabilization bracket corresponding to the first focusing drive member. The first focusing drive member and the second focusing drive member are used to drive the focusing bracket to move along the third direction. One of the first focusing drive member and the second focusing drive member is a focusing coil, and the other is a focusing magnet.
[0011] The aforementioned motor assembly includes a first focusing drive component and a second focusing drive component, which cooperate to drive the focusing bracket to move, thereby enabling the focusing bracket to move relative to the image stabilization bracket.
[0012] In one embodiment, the focus drive assembly further includes a focus sensor and a sensing magnet, the focus sensor and the sensing magnet being disposed correspondingly, one of the focus sensor and the sensing magnet being disposed on the focus bracket and the other being disposed on the image stabilization bracket.
[0013] The aforementioned motor assembly, by incorporating the aforementioned focus sensor and sensing magnet, enables the detection of the focus bracket displacement, which helps improve the focusing accuracy of the motor assembly.
[0014] In one embodiment, the motor assembly further includes a circuit board located between and connected to the base and the anti-shake bracket, with two first coils and two second coils disposed on the side of the circuit board away from the base and electrically connected to the circuit board.
[0015] The aforementioned motor assembly, by setting up the aforementioned circuit board, enables the first coil and the second coil to be electrically connected to the circuit board, which is beneficial for the rational layout of the motor assembly's wiring.
[0016] In one embodiment, the image stabilization drive assembly further includes an image stabilization sensor, which is disposed on the side of the circuit board away from the base and electrically connected to the circuit board, corresponding to the two first coils and the two second coils respectively.
[0017] The aforementioned motor assembly, by incorporating the aforementioned anti-shake sensor, detects the displacement of the anti-shake bracket in both the first and second directions, thereby improving the anti-shake accuracy of the motor assembly. The anti-shake sensor can also detect unintended rotation of the anti-shake bracket, facilitating compensation for such rotation and ensuring the anti-shake accuracy of the motor assembly.
[0018] In one embodiment, the image stabilization drive assembly further includes a first magnetizing plate and a second magnetizing plate, wherein the first magnetizing plate is connected between the first magnet and the image stabilization bracket, and the second magnetizing plate is connected between the second magnet and the image stabilization bracket.
[0019] The aforementioned motor assembly, by setting the first and second magnetizing plates, firstly enhances the structural strength of the first and second magnets, secondly facilitates the further convergence of the magnetic force of the first and second magnets, thereby increasing the driving force of the motor assembly, and thirdly, fixes the first and second magnets to the anti-shake bracket through the first and second magnetizing plates, preventing the first and second magnets from shifting or falling off.
[0020] Secondly, embodiments of this application also provide a camera module, including a motor assembly as described in any of the preceding technical solutions.
[0021] In the aforementioned camera module, the motor assembly includes an image stabilization drive component comprising two first coils and two second coils. The two first coils are spaced apart along a second direction, and the two second coils are spaced apart along a first direction. A first magnet and the two first coils drive the image stabilization bracket to move along the first direction, and a second magnet and the two second coils drive the image stabilization bracket to move along the second direction, thereby enabling the motor assembly to perform optical image stabilization. Furthermore, by including a focusing bracket and a focusing drive component, the focusing drive component drives the focusing bracket to move along a third direction, enabling the motor assembly to perform autofocus. This allows the motor assembly to perform both image stabilization and focusing functions. Additionally, the inclusion of two first coils and two second coils increases the driving force between them and the image stabilization bracket, thereby increasing the driving force of the motor assembly. This improves the response speed of the motor assembly in performing image stabilization movement, and thus enhances the image stabilization accuracy. The inclusion of at least two guide members allows the focusing bracket to move relative to the image stabilization bracket, reducing friction during movement and ensuring smooth movement while maintaining focusing accuracy.
[0022] Thirdly, embodiments of this application also provide a terminal device, including the camera module described above.
[0023] In the aforementioned terminal device, the motor assembly of its camera module incorporates an image stabilization drive component including two first coils and two second coils. The two first coils are spaced apart along a second direction, and the two second coils are spaced apart along a first direction. A first magnet and the two first coils drive the image stabilization bracket to move along the first direction, and a second magnet and the two second coils drive the image stabilization bracket to move along the second direction, thereby enabling the motor assembly to perform optical image stabilization. Furthermore, by incorporating a focusing bracket and a focusing drive component, the focusing drive component drives the focusing bracket to move along a third direction, enabling the motor assembly to perform autofocus. This allows the motor assembly to combine image stabilization and focusing functions. Additionally, the inclusion of two first coils and two second coils increases the driving force between them and the image stabilization bracket, thereby increasing the driving force of the motor assembly. This improves the response speed of the motor assembly in performing image stabilization movement, thus enhancing the image stabilization accuracy. The inclusion of at least two guide members allows the focusing bracket to move relative to the image stabilization bracket, reducing friction during movement and ensuring smooth movement while maintaining focusing accuracy. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the structure of the motor assembly provided in the embodiments of this application.
[0025] Figure 2 yes Figure 1An exploded view of the first embodiment of the motor assembly shown.
[0026] Figure 3 yes Figure 1 An exploded view of a second embodiment of the motor assembly shown.
[0027] Figure 4 yes Figure 1 An exploded view of the third embodiment of the motor assembly shown.
[0028] Figure 5 This is a schematic diagram of the camera module provided in the embodiments of this application.
[0029] Key component symbols: Camera module 1, Motor assembly 100, Base 10, First receiving cavity 11, Light exit hole 12, First rolling groove 13, Image stabilization bracket 20, Second receiving cavity 21, Assembly groove 22, Second rolling groove 23, Mounting hole 24, Fixing groove 25, Clearance hole 26, Image stabilization drive assembly 30, First magnet 31, Second magnet 32, First coil 33, Second coil 34, Image stabilization sensor 35, First magnetizing plate 36, Second magnetizing plate 37, Rolling element 40, Focusing bracket 50, Light transmission hole 51, Receiving groove 52, Sliding groove 53, Clearance groove 54, Focusing drive assembly 60, First focusing drive element 61, Second focusing drive element 62, Focusing sensor 63, Sensing magnet 64, Guide element 70, Circuit board 80, Electrical connection part 81, First electrical connection part 82, Second electrical connection part 83, Cover 90, Light entrance hole 91, Lens unit 200. Detailed Implementation
[0030] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein 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 accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0031] In the description of this application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, it should be noted that "a plurality of" means two or more, unless otherwise explicitly specified.
[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the two components; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0033] The following will describe some embodiments of this application in detail with reference to the accompanying drawings.
[0034] Please see Figure 1 This application provides a motor assembly 100. The motor assembly 100 is applied to a camera module 1 (see [link to application]). Figure 5 In this module, the motor assembly 100 is used to drive the lens unit 200 in the camera module 1 (see [link]). Figure 5 The motor assembly 100 can also drive the lens unit 200 in the camera module 1 to achieve optical image stabilization. (See also: [link to relevant documentation]). Figure 5 The device moves to achieve autofocus. For ease of understanding and explanation, the embodiments of this application are defined as follows: Figure 1 The XYZ coordinate system shown can be a first direction, a second direction, and a third direction. It should be understood that this is not a limitation on the embodiments of this application.
[0035] Please refer to the above. Figure 2 , Figure 3 and Figure 4 The motor assembly 100 includes a base 10, an image stabilization bracket 20, an image stabilization drive assembly 30, a focusing bracket 50, a focusing drive assembly 60, and at least two guide members 70. The base 10 has a first receiving cavity 11 for mounting the image stabilization bracket 20, the image stabilization drive assembly 30, the focusing bracket 50, the focusing drive assembly 60, and the at least two guide members 70, enabling the motor assembly 100 to achieve a modular design. The base 10 also has a light exit hole 12.
[0036] The image stabilization bracket 20 is located within the first receiving cavity 11 and is movably connected to the base 10. In this embodiment, the image stabilization bracket 20 is movably connected to the base 10 along a first direction and a second direction perpendicular to the first direction. The image stabilization bracket 20 has a second receiving cavity 21, and the adjacent sides of the side of the image stabilization bracket 20 facing the base 10 also have mounting grooves 22.
[0037] The image stabilization drive assembly 30 is used to drive the image stabilization bracket 20 to move along a first direction and a second direction. The image stabilization drive assembly 30 includes a first magnet 31, a second magnet 32, two first coils 33, and two second coils 34. The first magnet 31 and the second magnet 32 are respectively disposed on adjacent sides of the image stabilization bracket 20 and connected to it. The two first coils 33 and the two second coils 34 are respectively disposed corresponding to the first magnet 31 and the second magnet 32. The first magnet 31 and the two first coils 33 are used to drive the image stabilization bracket 20 to move along the first direction, and the second magnet 32 and the two second coils 34 are used to drive the image stabilization bracket 20 to move along the second direction. The two first coils 33 are spaced apart along the second direction, and the two second coils 34 are spaced apart along the first direction. The first magnet 31 and the second magnet 32 are respectively disposed in two corresponding mounting slots 22 of the image stabilization bracket 20.
[0038] The focusing bracket 50 is located in the second receiving cavity 21 and is movably connected to the image stabilization bracket 20. Specifically, the focusing bracket 50 is movably disposed in the second receiving cavity 21 along a third direction perpendicular to the first and second directions, and the focusing bracket 50 can move together with the image stabilization bracket 20 along the first and second directions. It can be understood that the third direction can be the optical axis direction.
[0039] The focus drive assembly 60 is connected between the focus bracket 50 and the image stabilization bracket 20, and is used to drive the focus bracket 50 to move in a third direction. The focus bracket 50 has a light-transmitting hole 51, which is connected to the light-exiting hole 12. The light-transmitting hole 51 is used to fit and mount the lens unit 200.
[0040] At least two guide members 70 are spaced apart and disposed within the second receiving cavity 21 of the image stabilization bracket 20. The focusing bracket 50 moves along the at least two guide members 70. In this embodiment, the number of guide members 70 is two. The image stabilization bracket 20 also has two fixing grooves 25, which communicate with the second receiving cavity 21. The two guide members 70 are respectively disposed within the corresponding two fixing grooves 25. The focusing bracket 50 has two sliding grooves 53 on its periphery, which are used to accommodate the guide members 70. The guide members 70 can be sliding columns or ball bearings. It is understood that in other embodiments, the number of guide members 70 can be three or more, which can be set according to the actual situation. This application embodiment does not specifically limit this.
[0041] In this embodiment, the motor assembly 100, by setting the image stabilization drive assembly 30 including two first coils 33 and two second coils 34, and defining that the two first coils 33 are spaced apart along a second direction and the two second coils 34 are spaced apart along a first direction, the first magnet 31 and the two first coils 33 are used to drive the image stabilization bracket 20 to move along the first direction, and the second magnet 32 and the two second coils 34 are used to drive the image stabilization bracket 20 to move along the second direction, so that the motor assembly 100 can achieve optical image stabilization; by setting the focusing bracket 50 and the focusing drive assembly 60, the focusing drive assembly 60 drives the focusing bracket 50 to move along a third direction, so that the motor assembly 100 can achieve autofocus, thereby the motor assembly 100 has both image stabilization and focusing functions. Furthermore, by setting two first coils 33 and two second coils 34, the magnetic attraction between the two first coils 33 and the two second coils 34 and the first magnet 31 and the second magnet 32 can be increased, thereby increasing the driving force between the two first coils 33 and the two second coils 34 and the image stabilization bracket 20, thus increasing the driving force of the motor assembly 100. This is beneficial to improving the response speed of the motor assembly 100 in performing image stabilization movement, thereby improving the image stabilization accuracy of the motor assembly 100. By setting at least two guide members 70, the focusing bracket 50 can move relative to the image stabilization bracket 20, reducing the friction force experienced by the focusing bracket 50 during movement, ensuring that the focusing bracket 50 can move smoothly, and at the same time ensuring the focusing accuracy of the focusing bracket 50.
[0042] To reduce the friction experienced by the image stabilization bracket 20 during movement, in this embodiment, the motor assembly 100 further includes rolling elements 40, which rotatably abut against the image stabilization bracket 20 and the base 10. At least three rolling elements 40 are included. The base 10 has at least three first rolling grooves 13, and the image stabilization bracket 20 has at least three second rolling grooves 23. The at least three first rolling grooves 13 and at least three second rolling grooves 23 are arranged opposite each other to accommodate corresponding rolling elements 40. Both the first rolling grooves 13 and the second rolling grooves 23 are universal grooves. In this embodiment, the number of rolling elements 40, first rolling grooves 13, and second rolling grooves 23 are all three. It is understood that in other embodiments, the number of rolling elements 40, first rolling grooves 13, and second rolling grooves 23 may be four or more; this embodiment does not specifically limit this.
[0043] Thus, by providing at least three rolling elements 40, the image stabilization bracket 20 can roll relative to the base 10, thereby allowing the image stabilization bracket 20 to move along the first and second directions. Furthermore, by providing the rolling elements 40, the friction experienced by the image stabilization bracket 20 during movement can be reduced, ensuring smooth movement. The provision of the first rolling groove 13 and the second rolling groove 23 further reduces the friction of the rolling elements 40 within these grooves, further ensuring smooth movement of the image stabilization bracket 20.
[0044] In this embodiment, the two first coils 33 are supplied with power in the same direction to provide magnetic attraction force in the same direction to the image stabilization bracket 20 along the first direction, or the two first coils 33 are supplied with power in opposite directions to provide magnetic attraction force in opposite directions to the image stabilization bracket 20 along the first direction; the two second coils 34 are supplied with power in the same direction to provide magnetic attraction force in the same direction to the image stabilization bracket 20 along the second direction, or the two second coils 34 are supplied with power in opposite directions to provide magnetic attraction force in opposite directions to the image stabilization bracket 20 along the second direction. Understandably, since both the first rolling groove 13 and the second rolling groove 23 are universal grooves, the rolling of the rolling element 40 within the universal groove is not easily restricted, which may cause the image stabilization bracket 20 to rotate unexpectedly. When the image stabilization bracket 20 rotates unexpectedly while moving in the first direction, power supplies of opposite directions, such as voltage or current, can be supplied to the two second coils 34 respectively, so that the two second coils 34 generate magnetic attraction forces of opposite directions with the second magnet 32 respectively, thereby providing the image stabilization bracket 20 with magnetic attraction forces of opposite directions to counteract the unexpected rotation generated when the image stabilization bracket 20 moves in the first direction. When the image stabilization bracket 20 rotates unexpectedly while moving in the second direction, power supplies of opposite directions can be supplied to the two first coils 33 respectively, so that the two first coils 33 generate magnetic attraction forces of opposite directions with the first magnet 31 respectively, thereby providing the image stabilization bracket 20 with magnetic attraction forces of opposite directions to counteract the unexpected rotation generated when the image stabilization bracket 20 moves in the second direction, thereby ensuring the stable movement of the image stabilization bracket 20.
[0045] Thus, when the image stabilization drive assembly 30 drives the image stabilization bracket 20 to move along the first direction or the second direction, the first coil 33 and the first magnet 31 drive the image stabilization bracket 20 to move along the first direction, or the second coil 34 and the second magnet 32 drive the image stabilization bracket 20 to move along the second direction. If the image stabilization bracket 20 rotates unexpectedly while moving along the first direction, power is supplied to the two second coils 34 in opposite directions so that the two second coils 34 provide magnetic attraction forces in opposite directions to the image stabilization bracket 20, thereby canceling the unexpected rotation of the image stabilization bracket 20 and making the image stabilization bracket 20 move stably along the first direction. If the image stabilization bracket 20 rotates unexpectedly while moving along the second direction, power is supplied to the two first coils 33 in opposite directions so that the two first coils 33 provide magnetic attraction forces in opposite directions to the image stabilization bracket 20, thereby canceling the unexpected rotation of the image stabilization bracket 20 and making the image stabilization bracket 20 move stably along the second direction, thereby ensuring the image stabilization accuracy and stability of the motor assembly 100.
[0046] In this embodiment, the motor assembly 100 further includes a circuit board 80. The circuit board 80 is located between the base 10 and the anti-shake bracket 20 and is connected to the base 10. The circuit board 80 is used for electrical connection to an external structure (not shown) and provides power, signal transmission, and other functions to the motor assembly 100. For example, the circuit board 80 has an electrical connection portion 81, which is electrically connected to an external power supply (not shown), an external controller (not shown), and other structures. The anti-shake drive assembly 30 is connected between the anti-shake bracket 20 and the circuit board 80, and is electrically connected to the circuit board 80. Specifically, two first coils 33 and two second coils 34 are disposed on the side of the circuit board 80 away from the base 10 and are electrically connected to the circuit board 80. Alternatively, the two first coils 33 and two second coils 34 can be understood as being disposed on the base 10 via the circuit board 80. Thus, by setting up the circuit board 80, the first coil 33 and the second coil 34 are electrically connected to the circuit board 80, which is beneficial for the rational layout of the wiring of the motor assembly 100.
[0047] In this embodiment, the anti-shake drive assembly 30 further includes anti-shake sensors 35. The anti-shake sensors 35 are respectively disposed on the side of the circuit board 80 away from the base 10, corresponding to the two first coils 33 and the two second coils 34, and are electrically connected to the circuit board 80. There are four anti-shake sensors 35, each approximately located at the center of its corresponding coil. The anti-shake sensors 35 are used to detect the position of the corresponding magnet to determine whether the corresponding magnet has undergone unexpected rotation. Thus, by setting the aforementioned anti-shake sensors 35, the displacement of the anti-shake bracket 20 in the first and second directions can be detected, which helps improve the anti-shake accuracy of the motor assembly 100. The anti-shake sensors 35 can also detect unexpected rotation of the anti-shake bracket 20, facilitating compensation for such unexpected rotation and ensuring the anti-shake accuracy of the motor assembly 100.
[0048] In this embodiment, the anti-shake drive assembly 30 further includes a first magnetizing plate 36 and a second magnetizing plate 37. The first magnetizing plate 36 is connected between the first magnet 31 and the anti-shake bracket 20, and the second magnetizing plate 37 is connected between the second magnet 32 and the anti-shake bracket 20. Specifically, the first magnetizing plate 36 and the second magnetizing plate 37 are respectively disposed in two corresponding mounting slots 22 of the anti-shake bracket 20. Thus, by setting the first magnetizing plate 36 and the second magnetizing plate 37, firstly, the structural strength of the first magnet 31 and the second magnet 32 is enhanced; secondly, the magnetic force of the first magnet 31 and the second magnet 32 is further concentrated, which is beneficial to increasing the driving force of the motor assembly 100; and thirdly, the first magnet 31 and the second magnet 32 are fixed to the anti-shake bracket 20 by the first magnetizing plate 36 and the second magnetizing plate 37, preventing the first magnet 31 and the second magnet 32 from shifting or falling off.
[0049] In this embodiment, the focusing drive assembly 60 includes a first focusing drive 61 and a second focusing drive 62. The first focusing drive 61 is disposed on the focusing bracket 50, and the second focusing drive 62 is disposed on the image stabilization bracket 20 corresponding to the first focusing drive 61. The first focusing drive 61 and the second focusing drive 62 are used to drive the focusing bracket 50 to move in a third direction. One of the first focusing drive 61 and the second focusing drive 62 is a focusing coil, and the other is a focusing magnet. In this embodiment, the first focusing drive 61 is a focusing magnet, and the second focusing drive 62 is a focusing coil. Correspondingly, the image stabilization bracket 20 also has a mounting hole 24, the circuit board 80 has a first electrical connection portion 82 corresponding to the mounting hole 24, and the focusing bracket 50 has a receiving groove 52 corresponding to the mounting hole 24. The first focusing drive 61 is disposed in the receiving groove 52, and the second focusing drive 62 is disposed in the mounting hole 24 of the image stabilization bracket 20 and electrically connected to the first electrical connection portion 82.
[0050] Understandably, in other embodiments, the focusing magnet may also be disposed in the mounting hole 24, and the focusing coil may be disposed in the receiving groove 52. Correspondingly, a conductive line may be embedded on the focusing bracket 50, which is electrically connected between the circuit board 80 and the focusing coil. This application embodiment does not specifically limit this.
[0051] Thus, by providing the first focusing drive unit 61 and the second focusing drive unit 62, the first focusing drive unit 61 and the second focusing drive unit 62 cooperate to drive the focusing bracket 50 to move, thereby enabling the focusing bracket 50 to move relative to the image stabilization bracket 20. By providing the mounting hole 24 and the receiving groove 52, the space occupied by the focusing drive assembly 60 is reduced, and the radial dimension of the motor assembly 100 is reduced, which is beneficial for miniaturizing the motor assembly 100. By providing the first electrical connection part 82, it is beneficial for the rational layout of the wiring of the motor assembly 100.
[0052] In this embodiment, the focusing drive assembly 60 further includes a focusing sensor 63 and a sensing magnet 64, which are correspondingly arranged. One of the focusing sensor 63 and the sensing magnet 64 is disposed on the focusing bracket 50, and the other is disposed on the image stabilization bracket 20. In this embodiment, the image stabilization bracket 20 also has a clearance hole 26, the circuit board 80 also has a second electrical connection portion 83 corresponding to the clearance hole 26, and the focusing bracket 50 also has a clearance groove 54 corresponding to the clearance hole 26. The focusing sensor 63 is disposed in the clearance hole 26 and electrically connected to the second electrical connection portion 83, and the sensing magnet 64 is disposed in the clearance groove 54. Thus, by setting the above-mentioned focusing sensor 63 and sensing magnet 64, the displacement of the focusing bracket 50 can be detected, which is beneficial to improving the focusing accuracy of the motor assembly 100.
[0053] Understandably, in other embodiments, the focus sensor 63 may also be disposed in the clearance groove 54, and the sensing magnet 64 may be disposed in the clearance hole 26. Correspondingly, a conductive line may be embedded on the focus bracket 50, which is electrically connected between the circuit board 80 and the focus sensor 63. This application embodiment does not specifically limit this.
[0054] In this embodiment, the motor assembly 100 also includes a cover 90. The cover 90 is connected to the base 10 to form a generally closed structure. The cover 90 has a light-entry hole 91, which is used to avoid obstructing the focusing bracket 50. Thus, by providing the cover 90, which is connected to the base 10, the cover 90 protects components such as the image stabilization bracket 20, circuit board 80, image stabilization drive assembly 30, focusing bracket 50, and focusing drive assembly 60, thereby improving the service life of the motor assembly 100.
[0055] Please see Figure 5This application also provides a camera module 1. The camera module 1 includes the motor assembly 100 as described in the above embodiments. Understandably, the camera module 1 may also include a lens unit 200 and a photosensitive element (not shown). The lens unit 200 is disposed within the light-transmitting hole 51 of the focusing bracket 50, and the photosensitive element is disposed on the base 10 and located on the image side of the lens unit 200. The photosensitive element is used to receive light passing through the lens unit 200 for imaging.
[0056] Thus, in this embodiment, the camera module 1, its motor assembly 100, by setting the image stabilization drive assembly 30 including two first coils 33 and two second coils 34, and defining the two first coils 33 as spaced apart along a second direction and the two second coils 34 as spaced apart along a first direction, the first magnet 31 and the two first coils 33 are used to drive the image stabilization bracket 20 to move along the first direction, and the second magnet 32 and the two second coils 34 are used to drive the image stabilization bracket 20 to move along the second direction, so that the motor assembly 100 achieves optical image stabilization; by setting the focusing bracket 50 and the focusing drive assembly 60, the focusing drive assembly 60 drives the focusing bracket 50 to move along a third direction, so that the motor assembly 100 achieves autofocus, thereby enabling the motor assembly 100 to have both image stabilization and focusing functions. Furthermore, by setting two first coils 33 and two second coils 34, the magnetic attraction between the two first coils 33 and the two second coils 34 and the first magnet 31 and the second magnet 32 can be increased, thereby increasing the driving force between the two first coils 33 and the two second coils 34 and the image stabilization bracket 20, thus increasing the driving force of the motor assembly 100. This is beneficial to improving the response speed of the motor assembly 100 in performing image stabilization movement, thereby improving the image stabilization accuracy of the motor assembly 100. By setting at least two guide members 70, the focusing bracket 50 can move relative to the image stabilization bracket 20, reducing the friction force experienced by the focusing bracket 50 during movement, ensuring that the focusing bracket 50 can move smoothly, and at the same time ensuring the focusing accuracy of the focusing bracket 50.
[0057] This application also provides a terminal device (not shown). The terminal device includes the camera module 1 as described in the above embodiment. In this embodiment, the terminal device can be a mobile phone. It is understood that in other embodiments, the terminal device can also be a vehicle recorder, security monitoring equipment, AR device, VR device, vehicle, tablet computer, smartwatch, smart glasses, robot vacuum cleaner, humanoid robot, or other devices with camera module 1.
[0058] Thus, in this embodiment of the terminal device, the motor assembly 100 of the camera module 1 is equipped with an image stabilization drive assembly 30, which includes two first coils 33 and two second coils 34. The two first coils 33 are spaced apart along a second direction, and the two second coils 34 are spaced apart along a first direction. A first magnet 31 and two first coils 33 are used to drive the image stabilization bracket 20 to move along the first direction, and a second magnet 32 and two second coils 34 are used to drive the image stabilization bracket 20 to move along the second direction, so that the motor assembly 100 can achieve optical image stabilization. By setting a focusing bracket 50 and a focusing drive assembly 60, the focusing drive assembly 60 drives the focusing bracket 50 to move along a third direction, so that the motor assembly 100 can achieve autofocus. Thus, the motor assembly 100 has both image stabilization and focusing functions. Furthermore, by setting two first coils 33 and two second coils 34, the magnetic attraction between the two first coils 33 and the two second coils 34 and the first magnet 31 and the second magnet 32 can be increased, thereby increasing the driving force between the two first coils 33 and the two second coils 34 and the image stabilization bracket 20, thus increasing the driving force of the motor assembly 100. This is beneficial to improving the response speed of the motor assembly 100 in performing image stabilization movement, thereby improving the image stabilization accuracy of the motor assembly 100. By setting at least two guide members 70, the focusing bracket 50 can move relative to the image stabilization bracket 20, reducing the friction force experienced by the focusing bracket 50 during movement, ensuring that the focusing bracket 50 can move smoothly, and at the same time ensuring the focusing accuracy of the focusing bracket 50.
[0059] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application.
[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.
Claims
1. A motor assembly, characterized in that, include: The base has a first receiving cavity; A stabilizing bracket is located in the first receiving cavity and is movably connected to the base; the stabilizing bracket has a second receiving cavity. The image stabilization drive assembly includes a first magnet, a second magnet, two first coils, and two second coils. The first magnet and the second magnet are respectively disposed on adjacent sides of the image stabilization bracket and connected to the image stabilization bracket. The two first coils and the two second coils are respectively disposed on the base corresponding to the first magnet and the second magnet. The first magnet and the two first coils are used to drive the image stabilization bracket to move along a first direction, and the second magnet and the two second coils are used to drive the image stabilization bracket to move along a second direction. The two first coils are spaced apart along the second direction, and the two second coils are spaced apart along the first direction. A focusing bracket is located in the second receiving cavity and is movably connected to the image stabilization bracket; A focus drive assembly is connected between the focus bracket and the image stabilization bracket, and is used to drive the focus bracket to move in a third direction; and At least two guide members are provided at intervals on the image stabilization bracket, and the focusing bracket moves along the at least two guide members.
2. The motor assembly as claimed in claim 1, characterized in that, The motor assembly also includes a rolling element that rolls between the anti-shake bracket and the base. The rolling element includes at least three rolling elements. The base has at least three first rolling grooves, and the anti-shake bracket has at least three second rolling grooves. The at least three first rolling grooves and the at least three second rolling grooves are arranged opposite to each other to accommodate the corresponding rolling element. The first rolling grooves and the second rolling grooves are both universal grooves.
3. The motor assembly as claimed in claim 1, characterized in that, The two first coils are used to supply power in the same direction to provide magnetic attraction in the same direction for the image stabilization bracket along the first direction, or the two first coils are used to supply power in opposite directions to provide magnetic attraction in opposite directions for the image stabilization bracket along the first direction. The two second coils are used to supply power in the same direction to provide magnetic attraction in the same direction for the image stabilization bracket along the second direction, or the two second coils are used to supply power in opposite directions to provide magnetic attraction in opposite directions for the image stabilization bracket along the second direction.
4. The motor assembly as claimed in claim 1, characterized in that, The focusing drive assembly includes a first focusing drive component and a second focusing drive component. The first focusing drive component is disposed on the focusing bracket, and the second focusing drive component is disposed on the image stabilization bracket corresponding to the first focusing drive component. The first focusing drive component and the second focusing drive component are used to drive the focusing bracket to move along the third direction. One of the first focusing drive component and the second focusing drive component is a focusing coil, and the other is a focusing magnet.
5. The motor assembly as claimed in claim 4, characterized in that, The focusing drive assembly further includes a focusing sensor and a sensing magnet, the focusing sensor and the sensing magnet being disposed correspondingly, one of the focusing sensor and the sensing magnet being disposed on the focusing bracket, and the other being disposed on the image stabilization bracket.
6. The motor assembly as claimed in claim 1, characterized in that, The motor assembly also includes a circuit board located between the base and the anti-shake bracket and connected to the base, with two first coils and two second coils disposed on the side of the circuit board away from the base and electrically connected to the circuit board.
7. The motor assembly as claimed in claim 6, characterized in that, The anti-shake drive assembly further includes an anti-shake sensor, which is disposed on the side of the circuit board away from the base and electrically connected to the circuit board, corresponding to the two first coils and the two second coils respectively.
8. The motor assembly as claimed in claim 1, characterized in that, The image stabilization drive assembly further includes a first magnetizing plate and a second magnetizing plate, wherein the first magnetizing plate is connected between the first magnet and the image stabilization bracket, and the second magnetizing plate is connected between the second magnet and the image stabilization bracket.
9. A camera module, characterized in that, Includes the motor assembly as described in any one of claims 1 to 8.
10. A terminal device, characterized in that, Includes the camera module as described in claim 9.