Actuating motor, camera module and electronic device

Abstract

This disclosure relates to an actuation motor, a camera module, and an electronic device, specifically in the field of camera module technology. The actuation motor includes a housing, a mover assembly, a drive assembly, and multiple position sensors. The mover assembly includes a first platform and a second platform. The drive assembly is connected to the housing, the first platform, and the second platform, respectively. The multiple position sensors correspond to the positions of the first platform and the second platform, and are used to detect the position of the first platform relative to the housing and the position of the second platform relative to the first platform. In this disclosure, the actuation motor drives the second platform to slide along a third direction via the drive assembly to achieve an autofocus function. The position sensors detect the position of the second platform relative to the first platform; that is, the autofocus function of the actuation motor employs closed-loop control, thereby improving the focusing speed and accuracy of the camera module.

Description

Technical Field

[0001] This disclosure relates to the field of camera module technology, and in particular to an actuation motor, camera module, and electronic device. Background Technology

[0002] With the rapid development of technology, users have increasingly higher requirements for the photography functions of various electronic devices. Among them, the actuator motor, as a component inside the camera module, can realize the optical image stabilization (OIS) function of the lens by moving on the X and Y axes, and realize the automatic focus (AF) function of the lens by moving on the Z axis.

[0003] In related technologies, the autofocus function of the actuation motor adopts an open-loop system, that is, the actuation motor drives the lens to move only according to the preset input signal. However, due to the presence of various interference factors (such as mechanical errors, temperature changes, and load disturbances), the focusing speed of the actuation motor is relatively slow and the accuracy is relatively low. Utility Model Content

[0004] This disclosure provides an actuation motor, a camera module, and an electronic device, which can solve the aforementioned technical problems existing in related technologies. The technical solution is as follows:

[0005] In a first aspect, an actuation motor is provided, the actuation motor including a housing, a mover assembly, a drive assembly, and a plurality of position sensors;

[0006] The moving part component includes a first platform and a second platform;

[0007] The driving component is connected to the housing, the first platform and the second platform respectively, and the driving component is used to drive the first platform to slide relative to the housing along a first direction and a second direction, and the second platform to slide relative to the first platform along a third direction.

[0008] The multiple position sensors correspond to the positions of the first platform and the second platform, respectively, and the position sensors are used to detect the position of the first platform relative to the housing and the position of the second platform relative to the first platform;

[0009] The third direction is perpendicular to the first direction and the second direction, respectively.

[0010] In this way, the actuation motor in this disclosure drives the second platform to slide along a third direction through the drive component to realize the autofocus function of the actuation motor. The position sensor is used to detect the position of the second platform relative to the first platform. That is, the autofocus function adopts closed-loop control, thereby improving the focusing speed and accuracy of the camera module.

[0011] In some possible implementations, the drive assembly includes two opposing first magnet groups, two first coils, a second magnet group, and three second coils;

[0012] Two first magnet groups are connected to the first platform, and two first coils are respectively opposite to the two first magnet groups and connected to the second platform;

[0013] The second magnet group is connected to the first platform, and the three second coils are respectively opposite to the two first magnet groups and the second magnet group, and are connected to the housing.

[0014] In this way, the drive assembly adopts a three-way magnet scheme, which results in a non-magnetic side of the actuation motor, thereby reducing the interference of other magnetic components of electronic devices on the magnet group in the actuation motor.

[0015] In some possible implementations, both the first coil and the second coil are toroidal coils;

[0016] The number of position sensors is at least three, and the three position sensors are respectively located in the inner regions of a first coil, a second coil opposite to the first magnet group, and a second coil opposite to the second magnet group.

[0017] In this way, the three position sensors detect the position of the first platform relative to the shell in the first and second directions, and the position of the second platform relative to the first platform in the third direction. By using a loop coil, the magnetic lines of force can form a closed loop, resulting in high magnetic field utilization and avoiding uneven driving force.

[0018] In some possible implementations, the drive assembly further includes a circuit board located between the second coil and the housing, and connected to the second coil and the housing, and electrically connected to the first coil and the second coil, respectively.

[0019] In this way, the circuit board can support the second coil and enhance the structural strength of the housing, avoiding the need for the first and second coils to be connected to the motherboard of the electronic device via long wires.

[0020] In some possible implementations, the actuating motor further includes a plurality of elastic connectors, which are respectively located on both sides of the first platform along the third direction. The plurality of elastic connectors are connected to the first platform and abut against the second platform.

[0021] This allows for a gap between the first and second platforms, thereby reducing component wear caused by sliding friction between the first and second platforms.

[0022] In some possible implementations, the actuation motor further includes a plurality of suspension wires, one end of which is connected to the housing and the other end of which is connected to the first platform, or the other end of which is connected to the elastic connector.

[0023] This allows for a gap between the first platform and the housing, thereby reducing component wear caused by sliding friction between the first platform and the housing.

[0024] In some possible implementations, the second magnet group has a Helbeck array structure.

[0025] In this way, the Hellbeck array structure can enhance the magnetic field strength at the target location, thereby increasing the driving magnetic force in the second direction.

[0026] In some possible implementations, the first direction, the second direction, and the third direction are perpendicular to each other.

[0027] In this way, the mutually perpendicular first and second directions help to decompose the movement of the first platform into two independent components, which makes the driving of the driving components simpler and faster.

[0028] In a second aspect, a camera module is provided, the camera module including a lens and an actuation motor as described in any one of the first aspects, the lens being connected to the second platform.

[0029] Thirdly, an electronic device is provided, the electronic device comprising the actuation motor or the camera module described in any one of the first aspects.

[0030] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is an exploded schematic diagram of an actuation motor provided in an embodiment of this disclosure.

[0033] Figure 2 This is a schematic diagram of the assembly of an actuation motor and a lens provided in an embodiment of this disclosure.

[0034] Figure 3 This is an assembly diagram of a drive component provided in an embodiment of this disclosure.

[0035] Figure 4 This is a schematic diagram of the structure of a second magnet group provided in an embodiment of this disclosure.

[0036] Figure label:

[0037] 1. Shell; 11. Top cover; 12. Base;

[0038] 2. Moving component; 21. First platform; 22. Second platform;

[0039] 3. Drive assembly; 31. First magnet group; 32. First coil; 33. Second magnet group; 34. Second coil; 35. Circuit board;

[0040] 4. Position sensor;

[0041] 5. Flexible connectors;

[0042] 6. Suspension wire components;

[0043] 100. Lens;

[0044] X, first direction; Y, second direction; Z, third direction.

[0045] The accompanying drawings have illustrated specific embodiments of this disclosure, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this disclosure to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0047] The following explains the terminology that may appear in the embodiments of this disclosure.

[0048] Auto Focus (AF): A technology in cameras or optical devices that uses sensors and algorithms to automatically adjust the lens focal length based on the principle of light reflection from objects, so that the subject can be clearly imaged.

[0049] Optical image stabilization (OIS) is a technology that uses physical displacement of the lens or sensor to counteract image shake caused by hand tremors or other external factors during shooting, thereby improving image clarity.

[0050] Image sensor: A component that converts optical signals into electrical signals, such as charge-coupled devices (CCD) and complementary metal-oxide-semiconductor (CMOS).

[0051] This disclosure provides an actuator motor, with reference to... Figure 1 As shown, the actuation motor includes a housing 1, a mover assembly 2, a drive assembly 3, and multiple position sensors 4.

[0052] The moving part 2 includes a first platform 21 and a second platform 22. The second platform 22 is used to connect to the lens 100 and drive the lens 100 to slide along a third direction Z. The first platform 21 is slidably connected to the second platform 22. The first platform 21 is used to drive the second platform 22 and the lens 100 to slide along a first direction X and a second direction Y.

[0053] The drive assembly 3 is connected to the housing 1, the first platform 21 and the second platform 22 respectively. The drive assembly 3 is used to drive the first platform 21 to slide relative to the housing 1 along the first direction X and the second direction Y, and the second platform 22 to slide relative to the first platform 21 along the third direction Z.

[0054] Multiple position sensors 4 are respectively positioned relative to the first platform 21 and the second platform 22. The position sensors 4 are used to detect the position of the first platform 21 relative to the housing 1 and the position of the second platform 22 relative to the first platform 21. The third direction Z is perpendicular to the first direction X and the second direction Y, respectively.

[0055] Thus, the actuation motor in this disclosure drives the second platform 22 through the drive component 3 to move the lens 100 along the third direction Z to achieve the autofocus function of the actuation motor. The drive component 3 drives the first platform 21 to move the second platform 22 and the lens 100 along the first direction X and the second direction Y to achieve the optical image stabilization function of the actuation motor.

[0056] The position sensor 4 can detect both the position of the second platform 22 relative to the first platform 21 and the position of the first platform 21 relative to the housing 1. That is, the autofocus function and optical image stabilization function of the camera module disclosed herein both adopt closed-loop control. The closed-loop control of the autofocus function can improve the focusing speed and accuracy of the camera module and enhance the user's control over the camera module.

[0057] In some embodiments, refer to Figure 1As shown, the housing 1 includes a connected upper cover 11 and a base 12, which form a receiving space. The mover assembly 2, the drive assembly 3 and the position sensor 4 are all located in the receiving space. The base 12 is used to support the various components inside the housing 1, and the upper cover 11 is used to protect the various components inside the housing 1, to avoid collisions and squeezing of external components, and to prevent foreign objects (such as dust and moisture) from entering the actuator motor.

[0058] The top cover 11 has a through hole, and the light-receiving surface of the lens 100 is opposite to the through hole. The through hole is used for external ambient light to pass through the housing 1 and enter the interior of the lens 100.

[0059] This disclosure does not specifically limit the connection relationship between the top cover 11 and the base 12. It can adopt detachable connection methods such as threaded fastening or snap-fit ​​connection, or non-detachable connection methods such as glue application or welding. The specific connection method can be matched and set according to factors such as the application scenario of the actuator motor and the connection strength requirements of different camera modules for the top cover 11 and the base 12.

[0060] In some embodiments, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other. The third direction Z is perpendicular to the first direction X and the second direction Y, which helps to decompose the movement of the second platform 22 into components independent of the movement of the first platform 21; the mutually perpendicular first direction X and the second direction Y help to decompose the movement of the first platform 21 into two independent components, which makes the driving component 2 simpler and faster to drive.

[0061] In some embodiments, refer to Figure 1 and Figure 3 As shown, the drive assembly 3 includes two opposing first magnet groups 31, two first coils 32, a second magnet group 33, and three second coils 34.

[0062] Two first magnet groups 31 are connected to the first platform 21, and two first coils 32 are respectively opposite to the two first magnet groups 31 and connected to the second platform 22. The second magnet group 33 is connected to the first platform 21, and three second coils 34 are respectively opposite to the two first magnet groups 31 and the second magnet group 33 and connected to the housing 1.

[0063] Two opposing first magnet groups 31 and a second magnet group 33 form a U-shaped structure. In this way, the drive component 3 has a non-magnetic side. The position corresponding to the non-magnetic side can be used to set other magnetic components in the electronic device, thereby reducing the magnetic interference of other magnetic components on the first magnet group 31 and the second magnet group 33 and improving the working stability of the drive component 3.

[0064] The first magnet group 31 and the first coil 32 can generate a driving force parallel to the third direction Z, thereby enabling the second platform 22 to drive the lens 100 to slide relative to the first platform 21 along the third direction Z. When the first magnet group 31 and the first coil 32 generate a driving force in the positive direction of the third direction Z, the lens 100 moves away from the photosensitive element; when the first magnet group 31 and the first coil 32 generate a driving force in the opposite direction of the third direction Z, the lens 100 moves towards the photosensitive element.

[0065] In this way, by adjusting the distance between the lens 100 and the photosensitive element through the first magnet group 31 and the first coil 32, the light is precisely focused on the photosensitive element, thereby forming a sharp image of the subject.

[0066] The first magnet group 31 and the corresponding second coil 34 can generate a driving force parallel to the first direction X, thereby enabling the first platform 21 to drive the second platform 22 and the lens 100 to slide relative to the housing 1 along the first direction X. The second magnet group 33 and the corresponding second coil 34 can generate a driving force parallel to the second direction Y, thereby enabling the first platform 21 to drive the second platform 22 and the lens 100 to slide relative to the housing 1 along the second direction Y.

[0067] In this way, the lens 100 is moved on the plane formed by the first magnet group 31, the second magnet group 33, and the second coil 34 to compensate for the shaking of the camera module caused by the user's hand tremor or other external factors.

[0068] In some embodiments, refer to Figure 1 As shown, the first coil 32 and the second coil 34 are both ring coils, and the number of position sensors 4 is at least three. The three position sensors 4 are respectively located in the inner regions of the first coil 32, the second coil 34 opposite to the first magnet group 31, and the second coil 34 opposite to the second magnet group 33.

[0069] In this way, the three position sensors 4 respectively detect the position of the first platform 21 relative to the housing 1 in the first direction X and the second direction Y, and the position of the second platform 22 relative to the first platform 21 in the third direction Z. By using a ring coil, when the first coil 32 and the second coil 34 cooperate with the corresponding magnet group, the magnetic lines of force can form a closed loop, reducing magnetic leakage. At the same time, the compact ring layout allows for a larger current density, increasing the driving force per unit volume.

[0070] The ring structure distributes stress evenly, reducing the possibility of local deformation of the coil and improving the working life of the first coil 32 and the second coil 34.

[0071] In some embodiments, the driving component 3 further includes a circuit board 35, which is located between the second coil 34 and the base 12 and is connected to the second coil 34 and the base 12. The circuit board 35 is electrically connected to the first coil 32 and the second coil 34 respectively.

[0072] In this way, the circuit board 35 can not only support the second coil 34 and enhance the structural strength of the base 12, but also prevent the first coil 32 and the second coil 34 from being connected to the motherboard of the electronic device through long wires.

[0073] In some other embodiments, the drive assembly 3 does not include the circuit board 35, and the first coil 32 and the second coil 34 are directly electrically connected to the motherboard of the electronic device.

[0074] In some embodiments, refer to Figure 1 and Figure 2 As shown, the actuation motor also includes multiple elastic connectors 5, which are located on both sides of the first platform 21 along the third direction Z. All the multiple elastic connectors 5 are connected to the first platform 21 and abut against the second platform 22.

[0075] When the second platform 22 is not subjected to a third-party driving force in the Z direction, multiple elastic connectors 5 clamp the second platform 22, so that the second platform 22 is in the initial position relative to the first platform 21.

[0076] When the second platform 22 is driven by a third force in the positive Z direction and moves in the positive Z direction, the second platform 22 squeezes the elastic connector 5 located on the side of the first platform 21 near the top cover 11, and the elastic connector 5 at the corresponding position continuously deforms; after the first coil 32 stops being energized, the third force driven by the second platform 22 in the positive Z direction disappears, and under the elastic force of the elastic connector 5 in the deformed state, the second platform 22 moves in the opposite direction of the third Z direction until the second platform 22 returns to the initial position.

[0077] When the second platform 22 is driven by a third force in the opposite direction of Z and moves in the opposite direction of Z, the second platform 22 presses the elastic connector 5 located on the side of the first platform 21 near the base 12, and the elastic connector 5 at the corresponding position continuously deforms; after the first coil 32 stops being energized, the third force in the opposite direction of Z on the second platform 22 disappears, and under the elastic force of the elastic connector 5 in the deformed state, the second platform 22 moves in the positive direction of Z until the second platform 22 returns to the initial position.

[0078] In some other embodiments, the actuating motor further includes a plurality of elastic connectors 5, which are located on both sides of the second platform 22 along the third direction Z. The plurality of elastic connectors 5 are connected to the second platform 22 and abut against the first platform 21.

[0079] When the second platform 22 is driven by a third force in the positive Z direction and moves in the positive Z direction, the first platform 21 presses the elastic connector 5 located on the side of the second platform 22 near the base 12, and the elastic connector 5 at the corresponding position continuously deforms; after the first coil 32 stops being energized, the third force in the positive Z direction on the second platform 22 disappears, and under the elastic force of the elastic connector 5 in the deformed state, the second platform 22 moves in the opposite direction of the third Z direction until the second platform 22 returns to the initial position.

[0080] When the second platform 22 is driven by a third force in the opposite direction of Z and moves in the opposite direction of Z, the second platform 22 squeezes the elastic connector 5 located on the side of the first platform 21 near the top cover 11, and the elastic connector 5 at the corresponding position is continuously deformed; after the first coil 32 stops being energized, the third force in the opposite direction of Z on the second platform 22 disappears, and under the elastic force of the elastic connector 5 in the deformed state, the second platform 22 moves in the positive direction of Z until the second platform 22 returns to the initial position.

[0081] The elastic connector 5 enables the second platform 22 to be connected to the first platform 21 by clamping, and also creates a gap between the first platform 21 and the second platform 22, thereby reducing component wear caused by relative movement between the first platform 21 and the second platform 22.

[0082] In some embodiments, refer to Figure 2 As shown, the actuation motor also includes multiple suspension wires 6. One end of the suspension wire 6 is connected to the housing 1, and the other end of the suspension wire 6 is connected to the first platform 21, or the other end of the suspension wire 6 is connected to the elastic connector 5.

[0083] When the first platform 21 is not subjected to driving forces in the first direction X and the second direction Y, the suspension member 6 supports the first platform 21, so that the first platform 21 is in the initial position relative to the housing 1.

[0084] For example, when the first platform 21 is driven by a positive force in the first direction X and moves in the positive direction X, the suspension wire 6 is continuously deformed; after the corresponding second coil 34 stops being energized, the positive force in the first direction X on the first platform 21 disappears, and under the elastic force of the suspension wire 6 in the deformed state, the first platform 21 moves in the opposite direction in the first direction X until the first platform 21 returns to the initial position.

[0085] In another example, when the first platform 21 is driven by a force in the opposite direction of the second direction Y and moves in the opposite direction of the second direction Y, the suspension wire 6 is continuously deformed; after the corresponding second coil 34 is de-energized, the driving force in the opposite direction of the second direction Y on the first platform 21 disappears, and under the elastic force of the suspension wire 6 in the deformed state, the first platform 21 moves in the positive direction of the second direction Y until the first platform 21 returns to the initial position.

[0086] The suspension wire 6 enables the connection between the first platform 21 and the housing 1 through the support of the suspension wire 6, and makes a gap between the first platform 21 and the housing 1, thereby reducing component wear caused by relative movement between the first platform 21 and the housing 1.

[0087] In some embodiments, the second magnet group 33 has a Helbeck array structure. The magnetization directions of adjacent magnets in the Helbeck array are rotated at a specific angle (e.g., 90° or 45°) to form a periodic structure, thereby enhancing the magnetic field on one side and weakening the magnetic field on the other side.

[0088] Reference Figure 4 As shown, the magnetization directions of adjacent magnets in the second magnet group 33 rotate clockwise at a fixed angle (90°) to form a periodic pattern. In this way, the side of the second magnet group 33 closer to the second coil 34 is the strengthening side, and the side farther away from the second coil 34 is the weakening side. The strengthening side has a higher magnetic field strength, which increases the magnetic force generated between the second magnet group 33 and the second coil 34.

[0089] Based on the same principle, this disclosure also provides a camera module, referring to... Figure 2 As shown, the camera module includes a lens 100 and an actuator motor as described in the above embodiment. The lens 100 is connected to a second platform 22, which drives the lens 100 to move along a third direction Z. The first platform 21 drives the second platform 22 and the lens 100 to move along a first direction X and / or a second direction Y. In this way, the actuator motor enables the camera module to achieve automatic focusing and optical image stabilization.

[0090] Based on the same principle, this disclosure also provides an electronic device, which includes the actuation motor or the camera module in the above embodiments.

[0091] The electronic devices involved in this disclosure may also be referred to as terminals, mobile terminals, terminal devices, user equipment (UE), etc. For example, a terminal device may be a smartphone, tablet computer, laptop computer, wearable device (e.g., smartwatch), or it may be a digital camera, SLR camera / mirrorless camera, gimbal camera, action camera, drone, or other professional shooting equipment. It should be understood that this disclosure does not specifically limit the specific technology or device form used in the electronic device. In the description of the above embodiments, a mobile phone is used as an example, but this disclosure is not limited thereto.

[0092] It is understood that the electronic device provided in this disclosure includes hardware structures and / or software modules corresponding to each function in order to achieve the above-mentioned functions. In conjunction with the units and algorithm steps of the various examples disclosed in this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of this disclosure.

[0093] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0094] It is understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0095] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0096] It is further understood that the terms "center," "longitudinal," "lateral," "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this embodiment 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. In this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, "above," "on top," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0097] It is further understood that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the two components; they can refer to a direct connection between two components without the presence of other components, or an indirect connection through an intermediate medium; they can refer to 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 disclosure according to the specific circumstances.

[0098] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0099] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the solutions disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the scope of the claims.

[0100] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An actuation motor, characterized by The actuation motor includes a housing (1), a mover assembly (2), a drive assembly (3), and multiple position sensors (4); The moving part (2) includes a first platform (21) and a second platform (22); The drive assembly (3) is connected to the housing (1), the first platform (21) and the second platform (22) respectively. The drive assembly (3) is used to drive the first platform (21) to slide relative to the housing (1) along the first direction (X) and the second direction (Y), and the second platform (22) to slide relative to the first platform (21) along the third direction (Z). The multiple position sensors (4) are respectively positioned relative to the first platform (21) and the second platform (22), and the position sensors (4) are used to detect the position of the first platform (21) relative to the housing (1) and the position of the second platform (22) relative to the first platform (21); The third direction (Z) is perpendicular to the first direction (X) and the second direction (Y), respectively.

2. The actuation motor according to claim 1, characterized in that, The drive assembly (3) includes two opposing first magnet groups (31), two first coils (32), a second magnet group (33), and three second coils (34); Two first magnet groups (31) are connected to the first platform (21), and two first coils (32) are respectively opposite to the two first magnet groups (31) and connected to the second platform (22); The second magnet group (33) is connected to the first platform (21), and the three second coils (34) are respectively opposite to the two first magnet groups (31) and the second magnet group (33), and are connected to the housing (1).

3. The actuation motor according to claim 2, characterized in that, Both the first coil (32) and the second coil (34) are toroidal coils; The number of position sensors (4) is at least three, and the three position sensors (4) are respectively located in the internal regions of a first coil (32), a second coil (34) opposite to the first magnet group (31), and a second coil (34) opposite to the second magnet group (33).

4. The actuation motor according to claim 2, characterized in that, The drive assembly (3) further includes a circuit board (35), which is located between the second coil (34) and the housing (1) and is connected to the second coil (34) and the housing (1). The circuit board (35) is electrically connected to the first coil (32) and the second coil (34) respectively.

5. The actuation motor according to claim 1, characterized in that, The actuating motor also includes a plurality of elastic connectors (5), which are located on both sides of the first platform (21) along the third direction (Z). The plurality of elastic connectors (5) are connected to the first platform (21) and abut against the second platform (22).

6. The actuation motor according to claim 5, characterized in that, The actuation motor also includes a plurality of suspension wires (6), one end of which is connected to the housing (1) and the other end of which is connected to the first platform (21), or the other end of which is connected to the elastic connector (5).

7. The actuation motor according to claim 2, characterized in that, The second magnet group (33) has a Helbeck array structure.

8. The actuation motor according to claim 1, characterized in that, The first direction (X), the second direction (Y), and the third direction (Z) are perpendicular to each other.

9. An image capture module, comprising: The camera module includes a lens (100) and an actuation motor as described in any one of claims 1-8, wherein the lens (100) is connected to the second platform (22).

10. An electronic device, comprising: The electronic device includes an actuation motor as described in any one of claims 1-8, or a camera module as described in claim 9.

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