Driving motor, camera apparatus, electronic device, and magnet group manufacturing method

Abstract

The present application provides a driving motor, a camera apparatus, an electronic device, and a magnet group manufacturing method. The driving motor comprises a motor bracket and a driving assembly. The driving assembly comprises magnet groups and coils; each magnet group comprises first magnets and second magnets; each magnet group has a central plane, the central plane is located between the first magnets, and the second magnets are arranged in equal numbers on both sides of the first magnets; and the first magnets have a first magnetization direction, the extension line in the first magnetization direction intersects with the central plane, a first included angle is formed between the extension line and the central plane, and the first included angle is not equal to 90°. According to the driving motor provided by the present application, by means of the deflection design of the magnetization directions of the first magnets in each magnet group, the magnetic flux density, perpendicular to a winding plane of the coils, on one side of the magnet groups is increased, thereby increasing the driving force of the driving motor.

Description

Driving motor, camera device, electronic device and manufacturing method of magnet assembly

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on January 8, 2024, with application number 202410033714.6, and the priority of the Chinese patent application entitled "Method for preparing a drive motor, camera device, electronic device and magnet assembly", all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of drive motors, and in particular to a method for preparing a drive motor, a camera device, an electronic device, and a magnet assembly. Background Art

[0003] Portable devices like smartphones and tablets achieve autofocus (AF) and optical image stabilization (OIS) when taking photos with their cameras by using a motor in the camera to drive the lens or sensor. Voice coil motors (VCMs) are widely used as actuators for AF and OIS. VCMs primarily consist of a magnet assembly and a coil. They are single-phase motors that generate Lorentz force in a magnetic field when an energized coil is applied, driving the motion of the moving element. VCMs are lightweight and have a fast response time.

[0004] As camera sensors and lenses grow larger, the weight of components driven by motors increases, requiring more VCM motor driving force. This increase in VCM motor driving force is typically achieved by increasing the driving current or increasing the size of the magnet assembly or coil. However, this results in increased power consumption and size of the camera.

[0005] Summary of the Invention

[0006] This application provides a drive motor, camera device, electronic device, and method for manufacturing a magnet assembly. The drive motor includes a motor bracket and a drive assembly, which in turn includes a magnet assembly and a coil. By designing the deflection of the magnetization direction of the magnets in the magnet assembly, the magnetic flux density on one side of the magnet assembly, perpendicular to the winding plane of the coil, is increased, thereby increasing the driving force of the drive motor.

[0007] In a first aspect, the present application provides a driving motor for use in a camera device, wherein the driving motor includes a motor bracket and a driving assembly. The driving assembly includes a magnet group and a coil. The magnet group includes a first magnet and a second magnet, wherein the first magnet and the second magnet are arranged in a first direction, and an equal number of second magnets are arranged on both sides of the first magnet. The center plane of the magnet group is located in the middle of the first magnet and intersects with the first direction. The N-pole surface of the first magnet and the N-pole surface of the second magnet on the same side of the center plane have the same orientation, and the N-pole surfaces of the first magnet on different sides of the center plane have opposite orientations. The first magnet has a first magnetization direction, and the extension line of the first magnetization direction intersects the center plane at a first angle, and the first angle is not equal to degrees.

[0008] In the present application, on one side of the magnet group, since the first magnetization direction of the first magnet deviates from the center plane, the magnetic lines of force from the N-pole surface of one first magnet pointing to the S-pole surface of the other first magnet are squeezed toward the center plane, thereby increasing the magnetic flux density on one side of the magnet group, and then increasing the magnetic flux density perpendicular to the coil. When the coil is energized, the drive component can generate a greater Lorentz force, which is beneficial for providing a stronger driving force for the lens or image sensor when the drive component is used in a camera device. Therefore, without increasing power consumption and size, the drive component provided in the present application can increase the driving force of the drive motor to drive a larger lens or image sensor, or, when the drive motor size is the same, the drive component provided in the present application can reduce the size of the driving current to reduce power consumption.

[0009] In the present application, the magnet assembly has an enhanced side, which is the side where the first magnetization direction of the first magnet deviates from the center plane. The coil is disposed on the enhanced side, and the winding plane of the coil intersects the center plane. On the enhanced side of the magnet assembly, the magnetic flux lines from the north pole face of one first magnet pointing to the south pole face of another first magnet are squeezed toward the center plane, thereby increasing the magnetic flux density on the enhanced side, thereby increasing the magnetic flux density perpendicular to the winding plane of the coil, and thereby increasing the driving force of the drive assembly.

[0010] In the present application, since the orientation of the N-pole surface of the second magnet is the same as that of the N-pole surface of the first magnet on the same side of the center plane, the second magnet can jointly provide a magnetic field perpendicular to the winding plane of the coil with the first magnet, and the second magnet can enhance the squeezing effect of the magnetic lines of force of the first magnet on the enhanced side of the magnet group, thereby further enhancing the magnetic flux density of the magnet group on the enhanced side, and thereby enhancing the Lorentz force generated by the joint action of the magnet group and the energized coil.

[0011] In some possible implementations, the second magnet has a second magnetization direction, an extension line of the second magnetization direction is arranged at a second angle with the center plane, and the second angle is smaller than the first angle.

[0012] In this implementation, since on the same side of the center plane, the component of the first magnetization direction of the first magnet in the first direction is opposite to the component of the second magnetization direction of the second magnet in the second direction, so that the second magnet can squeeze the magnetic lines of force of the first magnet in the first direction, by designing the second angle to be smaller than the first angle, the first magnet has more magnetic lines of force squeezed by the second magnet in the first direction, thereby increasing the magnetic flux density of the magnet group on the enhanced side, and then increasing the magnetic field strength generated by the magnet group perpendicular to the winding plane of the coil, so that the drive component can generate a stronger Lorentz force to provide a stronger driving force.

[0013] In some possible implementations, a component of the second magnetization direction in the first direction points in an opposite direction to a component of the first magnetization direction in the first direction of the first magnet located on the same side of the central plane.

[0014] In this implementation, on the same side of the center plane, since the component of the second magnetization direction of the second magnet in the first direction is opposite to the component of the first magnetization direction of the first magnet in the first direction, on the enhanced side of the magnet group, the second magnet can squeeze the magnetic lines of force of the first magnet along the first direction toward the center plane, thereby increasing the magnetic flux density of the magnet group on the enhanced side, and further increasing the Lorentz force generated by the joint action of the magnet group and the energized coil.

[0015] In some other possible implementations, the component of the second magnetization direction in the first direction points in the same direction as the component of the first magnetization direction of the first magnet located on the same side of the central plane in the first direction.

[0016] In this implementation, on the same side of the center plane, the first magnetization direction of the first magnet relative to the deflection direction of the center plane is the same as the deflection direction of the second magnetization direction of the second magnet relative to the center plane. On the enhanced side of the magnet group, since the magnetic lines of force of the second magnet on one side of the center plane will be connected to the second magnet on the other side of the center plane along the first direction, the magnetic lines of force of the second magnet will squeeze the magnetic lines of force of the first magnet toward the center plane, thereby increasing the magnetic flux density of the magnet group on the enhanced side, and then increasing the magnetic field strength of the magnet group on the enhanced side perpendicular to the winding plane of the coil, so that the drive component can generate a larger Lorentz force to provide a stronger driving force.

[0017] In some possible implementations, the second magnet has a second magnetization direction, an extension line of the second magnetization direction is arranged at a second angle with the center plane, and the second angle is equal to the first angle.

[0018] In this implementation, the first magnet and the second magnet have the same magnetization direction, so the first magnet and the second magnet can be prepared using the same raw materials and the same magnetization angle, which is conducive to the rapid preparation of the first magnet and the second magnet, thereby improving the preparation efficiency of the magnet group.

[0019] In some possible implementations, the component of the second magnetization direction in the first direction points in the same direction as the component of the first magnetization direction of the first magnet located on the same side of the central plane in the first direction.

[0020] In this implementation, on the same side of the center plane, the first magnetization direction of the first magnet relative to the deflection direction of the center plane is the same as the deflection direction of the second magnetization direction of the second magnet relative to the center plane. On the enhanced side of the magnet group, since the magnetic lines of force of the second magnet on one side of the center plane will be connected to the second magnet on the other side of the center plane along the first direction, the magnetic lines of force of the second magnet will squeeze the magnetic lines of force of the first magnet toward the center plane, thereby increasing the magnetic flux density of the magnet group on the enhanced side, and then increasing the magnetic field strength of the magnet group on the enhanced side perpendicular to the winding plane of the coil, so that the drive component can generate a larger Lorentz force to provide a stronger driving force.

[0021] In some possible implementations, the second magnet has a second magnetization direction, and the second magnetization direction is perpendicular to the magnetic pole plane of the magnet group.

[0022] In this implementation, on the enhanced side of the magnet group, the magnetic lines of force of the second magnet on one side of the center plane are connected to the second magnet on the other side of the center plane along the first direction, so that the magnetic lines of force of the second magnet will squeeze the magnetic lines of force of the first magnet toward the center plane, thereby increasing the magnetic flux density of the magnet group on the enhanced side, and then increasing the magnetic field strength of the magnet group on the enhanced side perpendicular to the winding plane of the coil, so that the drive component can generate a greater Lorentz force to provide a stronger driving force. In addition, since the second magnetization direction of the second magnet is perpendicular to the magnetic pole surface of the magnet group, the preparation of the second magnet is simpler, which is conducive to the preparation of the magnet group.

[0023] In some possible implementations, the components of the first magnetization directions of the two first magnets in the first direction have the same orientation, and the first angles between the two first magnets may be the same.

[0024] In this implementation, the magnet group is assembled from two identical first magnets, which is beneficial to the production efficiency of the magnet group and ensures that the magnetic flux density on both sides of the center plane is consistent, which is beneficial to the uniform force on the coil on both sides of the center plane when the coil moves along the first direction relative to the magnet group.

[0025] In some other possible implementations, the components of the first magnetization directions of the two first magnets in the first direction have the same orientation, and the first angles between the two first magnets may be different.

[0026] In this implementation, the first angles of the two first magnets are different, so that the magnetic field strengths of the two first magnets perpendicular to the winding plane of the coil are different, that is, the Lorentz force generated by the magnet group and the coil on one side of the center plane is stronger than the Lorentz force generated by the magnet group and the coil on the other side of the center plane, which is beneficial for the application of the magnet group in scenarios with different requirements for bidirectional driving force.

[0027] In some possible implementations, the value of the first angle is in the range of 5° to 45°.

[0028] In this implementation, the first angle, when in the range of 5° to 45°, enables the magnet assembly to provide a strong magnetic field perpendicular to the coil winding plane on the enhancement side, thereby generating a strong Lorentz force when interacting with the energized coil, thereby providing a strong driving force. If the first angle is less than 5° or greater than 45°, the magnet assembly will not significantly enhance the magnetic force on the enhancement side, making it difficult to interact with the energized coil to generate a strong Lorentz force.

[0029] In a second aspect, the present application also provides a camera device, comprising a lens, an image sensor, and a driving motor as described above, wherein the lens and the image sensor are spaced apart, the magnet group of the driving motor is connected to at least part of the lens or the image sensor, and the driving motor is used to drive at least part of the lens and the image sensor to move relative to each other.

[0030] In the present application, by designing a drive motor, the driving force of the drive motor can be increased without increasing the power consumption and size of the drive motor to drive a larger lens or image sensor, or, when the size of the drive motor remains the same, the current required for driving can be reduced to reduce power consumption and thereby improve the camera device.

[0031] In a third aspect, the present application further provides an electronic device comprising an image processor and a camera device as described above, wherein the image processor is communicatively connected to the camera device.

[0032] In the present application, the driving force is increased by designing a driving motor to increase the lens size of a camera device in an electronic device, or the power consumption of the camera device in an electronic device is reduced by designing a driving motor to reduce the power consumption.

[0033] In a fourth aspect, the present application also provides a method for preparing a magnet group, comprising: providing a first magnet and a second magnet, wherein the magnetic domain direction of the first magnet is arranged at a non-angle with the end face of the first magnet. Arranging the first magnet and the second magnet along a first direction to form a magnet group, wherein an equal number of second magnets are arranged on both sides of the two first magnets, and the magnet group has a center plane, which is located in the middle of the first magnets and intersects with the first direction. And magnetizing the magnet located on one side of the center plane along a second direction, and simultaneously magnetizing the magnet located on the other side of the center plane along a third direction to form a magnet group, wherein the second direction and the third direction are opposite.

[0034] In the present application, since the magnets are assembled into a magnet group and then magnetized to form a magnet group, there is no need to deal with the assembly resistance caused by the magnetic repulsion of the magnets during the assembly process, which reduces the difficulty of assembly and thus improves the efficiency of preparing the magnet group. In addition, since there is no magnetic repulsion between the magnets during assembly, the risk of collision between the magnets or between the magnets and other components is reduced, which can reduce the risk of damage to the magnets during the assembly process, thereby improving the preparation quality and yield of the magnet group. In addition, during the magnetization process, the magnets on both sides of the center plane are magnetized at the same time, which improves the efficiency of magnetizing the magnet group to form a magnet group. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] FIG1A is a schematic structural diagram of an electronic device provided in some embodiments of the present application;

[0036] FIG1B is a schematic diagram of a partially exploded structure of the electronic device shown in FIG1A ;

[0037] FIG2 is a schematic structural diagram of a camera device in the electronic device shown in FIG1A in some embodiments;

[0038] FIG3A is a schematic diagram of the structure of a lens and an image sensor in the camera device shown in FIG2 in some embodiments;

[0039] FIG3B is a schematic structural diagram of the lens and the driving motor shown in FIG3A in some embodiments;

[0040] FIG4 is a schematic structural diagram of a driving motor, a lens, and an image sensor in the camera device shown in FIG2 in some embodiments;

[0041] FIG5A is a schematic diagram of the structure of a lens and an image sensor in the camera device shown in FIG2 in some embodiments;

[0042] FIG5B is a schematic structural diagram of the lens and the driving motor shown in FIG5A in some embodiments;

[0043] FIG6A is a schematic structural diagram of a drive assembly in the drive motor shown in FIG2 in some embodiments;

[0044] FIG6B is a schematic cross-sectional view of the driving assembly shown in FIG6A taken along line AA;

[0045] FIG6C is a schematic structural diagram of a magnet group in the drive assembly shown in FIG6B in some embodiments;

[0046] FIG7A is a schematic structural diagram of a drive assembly in some embodiments of the prior art;

[0047] FIG7B is a schematic diagram showing a simulation comparison of magnetic field lines of the magnet group in FIG6B and FIG7A in the prior art;

[0048] FIG7C is a schematic diagram comparing simulations of the vertical magnetic field of the magnet group in the coil in the prior art of FIG6B and FIG7A;

[0049] FIG7D is a schematic diagram comparing simulations of the Lorentz force generated by the drive assembly in the prior art of FIG6B and FIG7A ;

[0050] FIG8A is a schematic structural diagram of a drive assembly in the drive motor shown in FIG2 in other embodiments;

[0051] FIG8B is a schematic structural diagram of a magnet group in the drive assembly shown in FIG8A in some embodiments;

[0052] FIG9A is a schematic structural diagram of a drive assembly in other embodiments of the prior art;

[0053] FIG9B is a schematic diagram showing a simulation comparison of the Lorentz force generated by the drive assembly in the embodiments of FIG7A , FIG8A , and FIG9A ;

[0054] FIG10A is a schematic structural diagram of a drive assembly in the drive motor shown in FIG2 in still other embodiments;

[0055] FIG10B is a schematic structural diagram of a magnet group in the drive assembly shown in FIG10A in some embodiments;

[0056] FIG10C is a schematic diagram comparing simulations of the Lorentz force generated by the drive assembly in the embodiments of FIG7A , FIG8A , FIG9A , and FIG10A ;

[0057] FIG11A is a schematic structural diagram of a magnet group in the drive assembly shown in FIG8A in other embodiments;

[0058] FIG11B is a schematic structural diagram of a magnet group in the drive assembly shown in FIG8A in yet other embodiments;

[0059] FIG12 is a schematic structural diagram of a magnet group in the drive assembly shown in FIG8A in yet other embodiments;

[0060] FIG13 is a schematic diagram of a process for preparing a magnet assembly according to some embodiments of the present application;

[0061] FIG14 is a schematic diagram of the process of preparing the magnet group provided in the embodiment of the present application in other embodiments. DETAILED DESCRIPTION

[0062] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0063] In the description of the embodiments of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed" and "connected" should be understood in a broad sense. For example, "connected" can mean detachably connected or non-detachably connected; it can mean directly connected or indirectly connected through an intermediary. "Multiple" means at least two.

[0064] The directional terms mentioned in the embodiments of the present application, such as "upper", "lower", "inside", "outside", "top", "bottom", "side", etc., are only references to the directions in the drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0065] In the embodiments of the present application, the limitations of the relative position relationship mentioned, such as parallel, perpendicular, aligned, etc., are all for the current state of the art, rather than absolutely strict limitations, and a small amount of deviation is allowed, and it is possible to be approximately parallel, approximately perpendicular, approximately aligned, etc. For example, A and B are parallel, which means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees. For example, A and B are perpendicular, which means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80 degrees and 100 degrees.

[0066] In the embodiments of this application, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first," "second," "third," or "fourth" may explicitly or implicitly include one or more of the features.

[0067] Please refer to Figure 1A and Figure 1B in combination. Figure 1A is a structural diagram of an electronic device 1000 provided in some embodiments of the present application; Figure 1B is a partial exploded structural diagram of the electronic device 1000 shown in Figure 1A.

[0068] In some embodiments, electronic device 1000 may be a device with a camera function, such as a mobile phone, a tablet personal computer, a laptop computer, a smart screen, a personal digital assistant (PDA), a camera, a personal computer, a notebook computer, an in-vehicle device, a wearable device, augmented reality (AR) glasses, an AR helmet, virtual reality (VR) glasses, or a VR helmet. In the embodiment of FIG. 1A , the electronic device 1000 is described as a mobile phone. Of course, other types of electronic devices 1000 may also adopt similar structures, which will not be described in detail below.

[0069] It will be understood that Figures 1A and 1B only schematically illustrate some components included in the electronic device 1000, and the actual shape, actual size, actual position and actual structure of these components are not limited by Figures 1A and 1B. The electronic device 1000 may also include more or fewer components compared to Figures 1A and 1B.

[0070] In some embodiments, electronic device 1000 may include a camera device 100, a screen 200, and a housing 300. Screen 200 is used to display images, videos, and the like. Screen 200 may include a translucent panel 2001 and a display screen 2002. Translucent panel 2001 and display screen 2002 are stacked and fixedly connected. Translucent panel 2001 primarily serves to protect and dustproof display screen 2002. Translucent panel 2001 may be made of, but is not limited to, glass. Display screen 2002 may be a flexible or rigid display screen. For example, the display screen 2002 may be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (OLED) display screen, a micro organic light-emitting diode (OLED) display screen, a micro organic light-emitting diode (OLED) display screen, a quantum dot light-emitting diode (QLED) display screen, a liquid crystal display (LCD), etc.

[0071] Exemplarily, the housing 300 is used to protect the internal electronic components of the electronic device 1000. The housing 300 may include a cover plate 3001, a frame 3002, and a camera decorative element 3003. The cover plate 3001 is located on the side of the display screen 2002 away from the light-transmitting panel 2001 and is stacked with the light-transmitting panel 2001 and the display screen 2002. The frame 3002 is fixed to the cover plate 3001. Exemplarily, the frame 3002 may be fixed to the cover plate 3001 by adhesive. The frame 3002 may also be integrally molded with the cover plate 3001, that is, the frame 3002 and the cover plate 3001 form a single, integral structure. The frame 3002 is located between the cover plate 3001 and the light-transmitting panel 2001. The light-transmitting panel 2001 may be fixed to the frame 3002 by adhesive. The light-transmitting panel 2001, the cover plate 3001, and the frame 3002 enclose the internal storage space of the electronic device 1000. This internal space accommodates the display screen 2002. The cover plate 3001 can be made of metal, plastic, glass, or other materials. It can be a single-material plate or a structure composed of multiple panels. The cover plate 3001 has a mounting opening, and the camera decorative element 3003 covers and is fixed to the mounting opening.

[0072] Illustratively, the camera device 100 is used to capture photos / videos. Illustratively, the camera device 100 is installed within the housing 300, located within the internal storage space of the electronic device 1000. The camera device 100 can function as a rear-facing camera. For example, the light-incident surface of the camera device 100 faces the camera decorative element 3003. The camera decorative element 3003 is used to protect the camera device 100.

[0073] In some embodiments, the camera decorative member 3003 protrudes from the side of the cover plate 3001 away from the light-transmitting panel 2001. In this way, the camera decorative member 3003 can increase the installation space for the camera device 100 in the thickness direction of the electronic device 1000. In other embodiments, the camera decorative member 3003 can also be flush with the cover plate 3001 or recessed into the internal storage space of the electronic device 1000.

[0074] The camera decorative member 3003 is provided with a through hole 3004. Through hole 3004 allows light from a scene to enter the light-entering surface of the camera device 100. In other embodiments, the electronic device 1000 may not include the camera decorative member 3003. In this case, the cover plate 3001 is no longer provided with a mounting opening, and instead, through hole 3004 is provided on the cover plate 3001. Through hole 3004 allows light from a scene to enter the light-entering surface of the camera device 100.

[0075] In other embodiments, the camera device 100 can also be used as a front-facing camera. For example, the light-entering surface of the camera device 100 faces the light-transmitting panel 2001. A light path avoidance hole is provided on the display screen 2002. This light path avoidance hole allows scene light to pass through the light-transmitting panel 2001 and then enter the light-entering surface of the camera device 100. In other embodiments, the electronic device 1000 may also include one or more other camera modules (not shown in the figure), which is not strictly limited in this embodiment of the present application.

[0076] In some embodiments, as shown in FIG1B , the electronic device 1000 may further include a circuit board 400 and an image processor 500. The circuit board 400 and the image processor 500 are located in the internal accommodation space of the electronic device 1000, and the image processor 500 is fixed to the circuit board 400 and electrically connected to the circuit board 400. The image processor 500 is communicatively connected to the camera device 100. The image processor 500 is used to obtain image data from the camera device 100 and process the image data. The communication connection between the camera device 100 and the image processor 500 may include data transmission through electrical connection methods such as wiring, or data transmission may be achieved through coupling or other methods. It is understandable that the camera device 100 and the image processor 500 may also be communicatively connected through other methods that can achieve data transmission.

[0077] In some embodiments, the electronic device 1000 may further include an analog-to-digital converter (also referred to as an A / D converter, not shown). The analog-to-digital converter is connected between the camera device 100 and the image processor 500. The analog-to-digital converter is used to convert the signal generated by the camera device 100 into a digital image signal and transmit it to the image processor 500. The image processor 500 then processes the digital image signal and ultimately displays the image or video on the screen 200.

[0078] In some embodiments, the electronic device 1000 may further include a memory (not shown), which is communicatively connected to the image processor 500. The image processor 500 processes the digital image signal and then transfers the image to the memory, so that the image can be retrieved from the memory at any time when the image is needed and displayed on the screen 200. In some embodiments, the image processor 500 may also compress the processed digital image signal before storing it in the memory to save memory space.

[0079] In some other embodiments, the electronic device 1000 may not include the screen 200 .

[0080] It will be understood that the installation location of the camera device 100 of the electronic device 1000 in the embodiment shown in Figures 1A and 1B is merely illustrative, and this application does not strictly limit the installation location of the camera device 100. In some other embodiments, the camera device 100 may also be installed in other locations of the electronic device 1000, for example, the camera device 100 may be installed in the upper middle or upper right corner of the back of the electronic device 1000. In some other embodiments, the electronic device 1000 may include a terminal body and an auxiliary component that can be rotated, moved, or detached relative to the terminal body, and the camera device 100 may also be disposed on the auxiliary component.

[0081] Please refer to FIG. 1B and FIG. 2 . FIG. 2 is a schematic structural diagram of the camera device 100 in the electronic device 1000 shown in FIG. 1A in some embodiments.

[0082] In some embodiments, a camera device 100 may include a drive motor 10, a lens 20, an image sensor 30, and a device bracket 40. The image sensor 30 and the drive motor 10 are mounted within the device bracket 40, with the lens 20 and the image sensor 30 spaced apart. The drive motor 10 is connected to at least a portion of the lens 20 or the image sensor 30 to drive relative movement between at least a portion of the lens 20 and the image sensor 30. FIG. 2 illustrates the embodiment in which the drive motor 10 is connected to the lens 20.

[0083] In this embodiment, the drive motor 10 can drive at least part of the lens 20 to move relative to the image sensor 30 to change the positional relationship between at least part of the lens 20 and the image sensor 30 to improve the shooting effect. For example, the drive motor 10 can drive at least part of the lens 20 to move relative to the image sensor 30 and move along the axial direction of the lens 20 to achieve autofocus, thereby making the image captured by the camera device 100 clearer and avoiding the problem of out-of-focus. The drive motor 10 can also drive at least part of the lens 20 to move relative to the image sensor 30 and move in a plane perpendicular to the circumference of the lens 20 to avoid or reduce jitter that occurs during the capture of optical signals, thereby improving the imaging quality of the camera device 100.

[0084] Exemplarily, the drive motor 10 may include a motor bracket 1 and a drive assembly 2. The drive assembly 2 may include a magnet assembly 21 and a coil 22. The coil 22 may be fixedly connected to the motor bracket 1, and the magnet assembly 21 may be fixedly connected to at least a portion of the lens 201 of the lens 20.

[0085] In this embodiment, the coil 22 is fixedly connected to the motor bracket 1, so that when the coil 22 is energized, the coil 22 and the motor bracket 1 are fixed, and the coil 22 can drive the magnet group 21 to drive at least part of the lens 201 of the lens 20 to move relative to the image sensor 30. Since the coil 22 does not need to move with the lens 20, the circuit connection of the coil 22 is avoided from moving back and forth, which is beneficial to the circuit wiring of the coil 22 and can reduce the circuit damage caused by the movement of the coil 22.

[0086] It can be understood that in some other embodiments, the magnet group 21 can be fixedly connected to the motor bracket 1, and the coil 22 can be fixedly connected to at least part of the lens 20, so that after the coil 22 is energized, the magnet group 21 and the motor bracket 1 are fixed, and the coil 22 drives at least part of the lens 20 to move relative to the image sensor 30 under the drive of the magnet group 21. Since the magnet group 21 does not need to follow the movement of the lens 20, the weight of the coil 22 is less than the weight of the magnet group 21, which is conducive to the driving component 2 driving at least part of the lens 20 to move relative to the image sensor 30, thereby improving the driving efficiency.

[0087] It should be noted that in the embodiment of the present application, the coil 22 is fixedly connected to the motor bracket 1, and the magnet group 21 is fixedly connected to the lens 20 for illustration, and the connection method between the drive component 2 and the lens 20, and the drive component 2 and the image sensor 30 is not limited.

[0088] In some embodiments, the optical axis 203 of the lens 20 and the axial direction of the image sensor 30 may coincide with or be parallel. Two magnet assemblies 21 may be connected to opposite sides of the lens 20 on the optical axis 203. The magnet assemblies 21 may have magnetic pole faces 215 parallel to the optical axis 203 of the lens 20, and the winding plane of the coil 22 may be parallel to the optical axis 203 of the lens 20 and parallel to the magnetic pole faces 215 of the magnet assemblies 21. The magnetic pole faces 215 in the magnet assemblies 21 shown in the embodiment of FIG. 2 are merely illustrative. The magnetic pole faces 215 may include an N-pole face and an S-pole face. The N-pole and S-pole faces of the magnet assemblies 21 in the embodiment of FIG. 2 may be reversed.

[0089] In this embodiment, when energized, coil 22 drives magnet assembly 21, causing lens 20 to move relative to image sensor 30 and along the axis of image sensor 30, thereby achieving autofocus. The arrowed line in Figure 2 indicates the direction of movement of lens 20. The drive motor 10 provided in this embodiment can be applied to upright autofocus (AF) lenses.

[0090] Please refer to Figures 3A and 3B in combination. Figure 3A is a structural diagram of the lens 20 and the image sensor 30 in the camera device 100 shown in Figure 2 in some embodiments; Figure 3B is a structural diagram of the lens 20 and the drive motor 10 shown in Figure 3A in some embodiments.

[0091] In some embodiments, the lens 20 may include multiple lens groups 201, and the magnet group 21 may be fixedly connected to one lens group 201. Two magnet groups 21 may be connected to opposite sides of a lens group 201 on the optical axis 203 of the lens 20, and the optical axis 203 of the lens 20 and the axial direction of the image sensor 30 may coincide or be parallel. The magnet group 21 may be fixedly connected to the lens group 201 via a connector 50. The magnet group 21 may have a magnetic pole surface 215 parallel to the optical axis 203 of the lens 20, and the winding plane of the coil 22 may be parallel to the optical axis 203 of the lens 20 and parallel to the magnetic pole surface 215 of the magnet group 21. The marking of the magnetic pole surface 215 in the magnet group 21 shown in the embodiment of FIG. 3B is for illustrative purposes only. The north pole and south pole of the magnet group 21 in the embodiment of FIG. 3B may be swapped.

[0092] In this embodiment, when energized, coil 22 drives magnet assembly 21 to move a set of lenses 201 relative to image sensor 30 and along the axis of image sensor 30, thereby achieving autofocus and zoom. The arrowed line in Figure 3A indicates the direction of movement of the set of lenses 201, while the dotted and cross-shaped circle in Figure 3B corresponds to the direction of movement of the set of lenses 201 in Figure 3A. The drive motor 10 provided in this embodiment can be applied to a periscope AF lens.

[0093] It should be noted that, in some other embodiments, the magnet group 21 may also be fixedly connected to the multiple groups of lenses 201 , and when the coil 22 is energized, it can drive the magnet group 21 to drive the multiple groups of lenses 201 to move relative to the image sensor 30 .

[0094] Please refer to FIG. 4 , which is a schematic structural diagram of the driving motor 10 , the lens 20 , and the image sensor 30 in the camera device shown in FIG. 2 in some embodiments.

[0095] In some embodiments, the optical axis 203 of the lens 20 and the axial direction of the image sensor 30 may coincide with or be parallel. Two magnet groups 21 may be connected to either side of the optical axis 203 of the lens 20. The magnet groups 21 may have magnetic pole faces 215 perpendicular to the optical axis 203 of the lens 20. The winding plane of the coil 22 is parallel to the arrangement direction of the two magnet groups 21 and parallel to the magnetic pole faces 215 of the magnet groups 21. The magnet groups 21 may be connected to the lens 20 via a connector 50. The magnetic pole faces 215 of the magnet groups 21 shown in the embodiment of FIG. 4 are for illustrative purposes only. The north and south poles of the magnet groups 21 in the embodiment of FIG. 4 may be swapped.

[0096] In this embodiment, when energized, the coil 22 drives the magnet assembly 21 to cause the lens 20 to move relative to the image sensor 30, and to move perpendicularly to the optical axis 203 of the lens 20 along the magnet assembly 21, thereby achieving anti-shake performance for the lens 20. The arrowed line in Figure 4 indicates the direction of movement of the lens 20. The drive motor 10 provided in this embodiment can be applied to upright optical image stabilizer (OIS) lenses.

[0097] Please refer to Figures 5A and 5B in combination. Figure 5A is a structural diagram of the lens 20 and the image sensor 30 in the camera device 100 shown in Figure 2 in some embodiments; Figure 5B is a structural diagram of the lens 20 and the drive motor 10 shown in Figure 5A in some embodiments.

[0098] In some embodiments, the lens 20 may include a prism 202 and at least one set of lenses 201. A magnet group 21 may be connected to the prism 202. The prism 202 may be driven by the drive motor 10 to move in multiple directions relative to the optical axis 203 of the lens 20. For example, the prism 202 may nod and shake its head under the drive motor 10. FIG5B illustrates the embodiment of the prism 202 nodding under the drive motor 10. Two magnet groups 21 may be connected to both sides of the prism 202 in the direction of movement. The magnet groups 21 may be connected to the prism 202 via a connector 50. The magnet groups 21 may have a magnetic pole face 215 parallel to the direction of movement of the prism 202, and the winding plane of the coil 22 is parallel to the direction of movement of the prism 202 and parallel to the magnetic pole face 215 of the magnet group 21. The magnetic pole surface 215 in the magnet group 21 shown in the embodiment of FIG. 5B is only for illustration. The N pole and the S pole of the magnet group 21 in the embodiment of FIG. 5B can be swapped.

[0099] In this embodiment, when energized, the coil 22 drives the magnet assembly 21 to rotate the prism 202 relative to the other lenses 201 and the image sensor 30 in the lens 20, thereby achieving anti-shake performance for the lens 20. In Figures 5A and 5B, the arrowed curves indicate the deflection direction of the prism 202. The drive motor 10 provided in this embodiment can be applied to a periscope OIS lens.

[0100] Please refer to Figures 6A to 6C in combination. Figure 6A is a structural schematic diagram of the drive component 2 in the drive motor 10 shown in Figure 2 in some embodiments; Figure 6B is a cross-sectional structural schematic diagram of the drive component 2 shown in Figure 6A taken along AA; Figure 6C is a structural schematic diagram of the magnet group 21 in the drive component 2 shown in Figure 6B in some embodiments.

[0101] In some embodiments, the drive assembly 2 may include a magnet group 21 and a coil 22. The magnet group 21 may include two first magnets 211, which are arranged in a first direction. The magnet group 21 has a center plane 212, which is located between the two first magnets 211 and intersects with the first direction. The north pole surfaces of the two first magnets 211 located on different sides of the center plane 212 are oriented in opposite directions. The first magnets 211 have a first magnetization direction, and an extension of the first magnetization direction intersects the center plane 212 at a first angle (see α1 in FIG. 6C ), which is not equal to 90°.

[0102] The dashed line in Figure 6B represents the magnetic pole boundary of the magnet. It is understood that the magnetic pole boundary of the magnet can be a straight line or a spline curve, and the magnetic pole boundary of the magnet can also be located at other positions. The dashed line with an arrow in the first magnet 211 in Figure 6B represents the first magnetization direction.

[0103] In this embodiment, on one side of the magnet group 21, because the first magnetization direction of the first magnet 211 deviates from the center plane 212, the magnetic lines of force from the north pole face of one first magnet 211 pointing to the south pole face of the other first magnet 211 are squeezed toward the center plane 212, thereby increasing the magnetic flux density on one side of the magnet group 21, and thereby increasing the magnetic flux density perpendicular to the coil 22. When the coil 22 is energized, the drive assembly 2 can generate a greater Lorentz force, which is beneficial for providing a stronger driving force for the lens 20 or image sensor 30 when the drive assembly 2 is used in the camera device 100. Therefore, without increasing power consumption and size, the drive assembly 2 provided in this application can increase the driving force of the drive motor 10 to drive a larger lens 20 or image sensor 30. Alternatively, when the drive motor 10 has the same size, the drive assembly 2 provided in this application can reduce the magnitude of the driving current to reduce power consumption.

[0104] Exemplarily, the magnet group 21 has an enhanced side 213, which is the side where the first magnetization direction of the first magnet 211 deviates from the center plane 212, that is, the opening direction of the first angle in Figure 6C, and the coil 22 is arranged on the enhanced side 213, and the winding plane 221 of the coil 22 intersects with the center plane 212.

[0105] The winding plane 221 of the coil 22 is the coil surface formed by the winding, and is parallel to the direction of the current and faces the magnet assembly 21. The dotted line with an arrow in FIG6A represents the direction of the current flowing through the coil 22.

[0106] In this embodiment, on the enhanced side 213 of the magnet group 21, the magnetic lines of force from the N-pole surface of one first magnet 211 pointing to the S-pole surface of another first magnet 211 are squeezed toward the center plane 212, so that the magnetic flux density on the enhanced side 213 is increased, thereby increasing the magnetic flux density perpendicular to the winding plane 221 of the coil 22, and thereby increasing the driving force of the driving component 2.

[0107] Among them, the winding plane 221 of the coil 22 is perpendicular to the center plane 212, and the winding plane 221 of the coil 22 is parallel to the magnetic pole surface 215 of the magnet group 21, which is beneficial for the magnet group 21 to better provide a magnetic field perpendicular to the winding plane 221, thereby facilitating the generation of the Lorentz force.

[0108] It should be noted that, in the embodiments shown in FIG. 6A to FIG. 6C , the magnet group 21 includes two first magnets 211 for illustration. In other embodiments, the number of first magnets 211 may be greater, and the center plane 212 is located in the middle of the first magnets 211 .

[0109] In some examples, the first magnetization directions of the two first magnets 211 may have the same components in the first direction, and the first angles of the two first magnets 211 may be the same. In other words, the two first magnets 211 are identical, but the magnetic pole faces of the two first magnets 211 are assembled in opposite directions.

[0110] In this embodiment, the magnet group 21 is assembled by two identical first magnets 211, which is beneficial to the production efficiency of the magnet group 21 and ensures that the magnetic flux density on both sides of the center plane 212 is consistent, which is beneficial to the uniform force on the coil 22 on both sides of the center plane 212 when the coil 22 moves along the first direction relative to the magnet group 21.

[0111] In other examples, the components of the first magnetization directions of the two first magnets 211 in the first direction may be directed in the same direction, and the first angles of the two first magnets 211 may be different.

[0112] In this embodiment, the first angles of the two first magnets 211 are different, so that the magnetic field strengths of the two first magnets 211 perpendicular to the winding plane 221 of the coil 22 are different, that is, the Lorentz force generated by the magnet group 21 and the coil 22 on one side of the center plane 212 is stronger than the Lorentz force generated by the magnet group 21 and the coil 22 on the other side of the center plane 212, which is beneficial for the application of the magnet group 21 in scenarios with different requirements for bidirectional driving force.

[0113] Exemplarily, the value of the first angle may be in the range of 5° to 45°. For example, the value of the first angle may be 5°, or 15°, or 25°, or 35°, or 45°, or other values ​​between 5° and 45°.

[0114] In this embodiment, the first angle is within the range of 5° to 45°, enabling the magnet assembly 21 to provide a strong magnetic field perpendicular to the winding plane 221 of the coil 22 on the enhancement side 213, thereby generating a strong Lorentz force on the energized coil 22 to provide a strong driving force. If the first angle is less than 5° or greater than 45°, the magnet assembly 21 will not significantly enhance the magnetic force on the enhancement side 213, making it difficult to generate a strong Lorentz force on the energized coil 22.

[0115] Please refer to Figure 6B, Figure 7A and Figure 7B in combination. Figure 7A is a structural schematic diagram of the drive component 2 in some embodiments in the prior art; Figure 7B is a simulation comparison schematic diagram of the magnetic lines of force of the magnet group 21 in the prior art in Figures 6B and 7A.

[0116] In one prior art, the drive assembly 2 may include a coil 22 and a magnet group 21. The magnet group 21 includes two magnets, and the magnetization directions of the magnets in the magnet group 21 are parallel to the center plane 212 of the magnet group 21, and the magnetization directions of the magnets are perpendicular to the winding plane of the coil 22. The size and magnetization strength of the magnet group 21 in the prior art drive assembly 2 of FIG7A are the same as those of the magnet group 21 in the embodiment of FIG6B . The number of turns and the current flowing through the coil 22 in the prior art drive assembly 2 of FIG7A are the same as those of the embodiment of FIG6B .

[0117] Taking the driving component 2 provided in the embodiment of FIG6B as an example, in which the first angle of the first magnetization direction of the first magnet 211 in the magnet group 21 is 20°, a simulation comparison of the magnetic lines of force is performed with the driving component 2 shown in the prior art of FIG7A, and a simulation comparison diagram as shown in FIG7B is obtained. Different grayscales in FIG7B correspond to different magnetic field intensities. As can be seen from FIG7B, the magnetic line density of the magnet group 21 in FIG6B of the present application on the enhanced side 213 is greater than the magnetic line density of the magnet group 21 in the prior art shown in FIG7A, and the magnetic field intensity in FIG6B of the present application is greater than the magnetic field intensity of the magnet group 21 in the prior art shown in FIG7A. Therefore, the driving component 2 in the embodiment of FIG6B of the present application can generate a stronger Lorentz force to provide a stronger driving force.

[0118] Please refer to FIG. 6B , FIG. 7A and FIG. 7C . FIG. 7C is a schematic diagram showing a simulation comparison of the vertical magnetic field of the magnet group 21 in the coil 22 in the prior art of FIG. 6B and FIG. 7A .

[0119] Taking the driving component 2 provided in the embodiment of FIG6B as an example, in which the first angle of the first magnetization direction of the first magnet 211 in the magnet group 21 is 20°, a simulation comparison of the vertical magnetic field of the coil 22 is performed with the driving component 2 shown in the prior art of FIG7A, and a simulation comparison diagram as shown in FIG7C is obtained. Different grayscales in FIG7C correspond to different magnetic field intensities. The vertical magnetic field intensity in FIG7C is the magnetic field intensity generated by the magnet group 21 perpendicular to the winding plane 221 of the coil 22. The greater the magnetic field intensity perpendicular to the winding plane 221 of the coil 22, the greater the Lorentz force generated by the interaction between the magnet group 21 and the energized coil 22. As can be seen from FIG7C, the vertical magnetic field intensity of the coil 22 in the embodiment of FIG6B of the present application is greater than the vertical magnetic field intensity of the coil 22 in the prior art shown in FIG7A. Therefore, the driving component 2 in the embodiment of FIG6B of the present application can generate a stronger Lorentz force to provide a stronger driving force.

[0120] Please refer to FIG. 6B , FIG. 7A and FIG. 7D in combination. FIG. 7D is a schematic diagram showing a simulation comparison of the Lorentz force generated by the driving assembly 2 in the prior art of FIG. 6B and FIG. 7A .

[0121] Taking the driving component 2 provided in the embodiment of Figure 6B as an example, in which the first angle of the first magnetization direction of the first magnet 211 in the magnet group 21 is 10°, 20° and 30°, a simulation comparison is performed with the driving component 2 shown in the prior art of Figure 7A in which the angle between the magnetization direction of the magnet and the center plane 212 of the magnet group 21 is 0°, and the magnitude of the Lorentz force of the driving component 2 is compared at different distances when the coil 22 and the magnet group 21 move relative to each other along the first direction.

[0122] In Figure 7D , the abscissa represents the distance that coil 22 and magnet assembly 21 move relative to each other along the first direction, and the ordinate represents the Lorentz force. As can be seen in Figure 7D , the Lorentz force generated by drive assembly 2 in the embodiment of Figure 6B of the present application at multiple angles of the first angle of the first magnetization direction of first magnet 211 is greater than the Lorentz force generated by drive assembly 2 in the prior art shown in Figure 7A . Therefore, drive assembly 2 in the embodiment of Figure 6B of the present application is capable of generating a stronger Lorentz force, thereby providing a stronger driving force.

[0123] Please refer to Figure 8A and Figure 8B in combination. Figure 8A is a structural schematic diagram of the drive component 2 in the drive motor 10 shown in Figure 2 in other embodiments; Figure 8B is a structural schematic diagram of the magnet group 21 in the drive component 2 shown in Figure 8A in some embodiments.

[0124] In some embodiments, the magnet group 21 may further include a second magnet 214 , which may be arranged in equal numbers on both sides of the first magnet 211 along the first direction, and the N-pole surface of the first magnet 211 and the N-pole surface of the second magnet 214 located on the same side of the center plane 212 may have the same orientation.

[0125] The dashed lines in Figures 8A and 8B represent schematic diagrams of the magnetic pole boundaries of the magnets. It is understood that the magnetic pole boundaries of the magnets can be straight lines or spline curves, and the magnetic pole boundaries of the magnets can also be located at other locations. The dashed line with an arrow in the first magnet 211 in Figures 8A and 8B represents the first magnetization direction, and the dashed line with an arrow in the second magnet 214 represents the second magnetization direction.

[0126] In this embodiment, since the orientation of the N-pole surface of the second magnet 214 is the same as that of the N-pole surface of the first magnet 211 on the same side of the center plane 212, the second magnet 214 can jointly provide a magnetic field perpendicular to the winding plane 221 of the coil 22 with the first magnet 211, and the second magnet 214 can enhance the squeezing effect of the magnetic lines of force of the first magnet 211 on the enhanced side 213 of the magnet group 21, thereby further enhancing the magnetic flux density of the magnet group 21 on the enhanced side 213, and further enhancing the Lorentz force generated by the joint action of the magnet group 21 and the energized coil 22.

[0127] It should be noted that the number of the second magnets 214 can be an even number. The embodiments of Figures 8A and 8B and the embodiments described below are illustrated with the number of the first magnets 211 being two and the number of the second magnets 214 being two, and do not limit the number of the first magnets 211 and the number of the second magnets 214 in the embodiments of the present application.

[0128] For example, the second magnet 214 may have a second magnetization direction, with an extension of the second magnetization direction being arranged at a second angle (see α2 in FIG. 8B ) with the center plane 212, where the second angle is not equal to 90°. The component of the second magnetization direction in the first direction is directed oppositely to the component of the first magnetization direction of the first magnet 211 located on the same side of the center plane 212. In FIG. 8B , the second angle is illustrated by the intersection of a plane parallel to the center plane 212 and the extension of the second magnetization direction.

[0129] In this embodiment, on the same side of the center plane 212, since the component of the second magnetization direction of the second magnet 214 in the first direction is opposite to the component of the first magnetization direction of the first magnet 211 in the first direction, on the enhanced side 213 of the magnet group 21, the second magnet 214 can squeeze the magnetic lines of force of the first magnet 211 along the first direction toward the center plane 212, thereby increasing the magnetic flux density of the magnet group 21 on the enhanced side 213, and further increasing the Lorentz force generated by the joint action of the magnet group 21 and the energized coil 22.

[0130] In which, the second angle can be equal to the first angle, so that the component of the second magnetization direction of the second magnet 214 in the direction perpendicular to the magnetic pole surface 215 of the magnet group 21 is equal to the component of the first magnetization direction of the first magnet 211 in the direction perpendicular to the magnetic pole surface 215 of the magnet group 21, so that the first magnet 211 and the second magnet 214 can respectively provide magnetic fields of the same magnetic field strength in the direction perpendicular to the winding plane 221 of the coil 22, which is beneficial to the magnetic field balance of the entire magnet group 21.

[0131] Please refer to Figures 7A, 8A, 9A and 9B in combination. Figure 9A is a structural schematic diagram of the drive component 2 in other embodiments in the prior art; Figure 9B is a simulation comparison schematic diagram of the Lorentz force generated by the drive component 2 in the embodiments of Figures 7A, 8A and 9A.

[0132] In one existing technology, the drive component 2 includes a magnet group 21 and a coil 22. The magnet group 21 includes three magnets arranged in sequence. The magnetization direction of the middle magnet is parallel to the arrangement direction of the three magnets. The magnetization directions of the magnets on both sides are perpendicular to the magnetic pole surface 215 and perpendicular to the arrangement direction of the three magnets, and the N pole surfaces of the magnets on both sides are in opposite directions.

[0133] Among them, the magnetization intensity of the magnet group 21, the size of the magnet group 21, the number of turns of the coil 22, and the current flowing through the coil 22 of the drive component 2 in the prior art of Figure 7A, the drive component 2 in the embodiment of Figure 8A, and the drive component 2 in the prior art of Figure 9A are all equal.

[0134] In Figure 9B , the abscissa represents the distance that coil 22 and magnet assembly 21 move relative to each other in the first direction, and the ordinate represents the Lorentz force. As can be seen in Figure 9B , the Lorentz force generated by drive assembly 2 in the embodiment of Figure 8A of the present application is greater than the Lorentz force generated by drive assembly 2 in the prior art of Figures 7A and 9A . Therefore, drive assembly 2 in the embodiment of Figure 8A of the present application is able to generate a stronger Lorentz force, thereby providing a stronger driving force.

[0135] Please refer to Figures 10A and 10B in conjunction. Figure 10A is a schematic diagram of the structure of the drive assembly 2 in the drive motor 10 shown in Figure 2 in some embodiments; Figure 10B is a schematic diagram of the structure of the magnet group 21 in the drive assembly 2 shown in Figure 10A in some embodiments. The drive assembly 2 of the embodiment shown in Figures 10A and 10B can include most of the technical features of the drive assembly 2 of the embodiment shown in Figures 8A and 8B. The following mainly describes the differences between the two, and most of the common contents between the two are not repeated here.

[0136] In some embodiments, the second angle may not be equal to the first angle.

[0137] The dashed lines in Figures 10A and 10B represent schematic diagrams of the magnetic pole boundaries of the magnets. It is understood that the magnetic pole boundaries of the magnets can be straight lines or spline curves, and the magnetic pole boundaries of the magnets can also be located at other locations. The dashed line with an arrow in the first magnet 211 in Figures 10A and 10B represents the first magnetization direction, and the dashed line with an arrow in the second magnet 214 represents the second magnetization direction.

[0138] In this embodiment, by setting the first angle and the second angle to be different, the component size of the second magnetization direction of the second magnet 214 in the first direction can be designed, thereby designing the degree of squeezing of the magnetic lines of force of the first magnet 211 by the second magnet 214 in the first direction, thereby adjusting the magnetic flux distribution of the magnet group 21 on the enhanced side 213, so that the magnetic field design of the magnet group 21 on the enhanced side 213 is more flexible, so as to be designed for different application scenarios.

[0139] For example, the second angle may be smaller than the first angle. In other words, the component of the first magnetization direction of the first magnet 211 in the first direction is greater than the component of the second magnetization direction of the second magnet 214 in the first direction.

[0140] In this embodiment, since on the same side of the center plane 212, the component of the first magnetization direction of the first magnet 211 in the first direction is opposite to the component of the second magnetization direction of the second magnet 214 in the second direction, so that the second magnet 214 can squeeze the magnetic lines of force of the first magnet 211 in the first direction, by designing the second angle to be smaller than the first angle, the first magnet 211 has more magnetic lines of force squeezed by the second magnet 214 in the first direction, thereby increasing the magnetic flux density of the magnet group 21 on the enhanced side 213, and then increasing the magnetic field strength generated by the magnet group 21 perpendicular to the winding plane 221 of the coil 22, so that the driving component 2 can generate a stronger Lorentz force to provide a stronger driving force.

[0141] Among them, the values ​​of the first angle and the second angle are both in the range of 5° to 45°, and the first angle and the second angle can be matched with any angle value, for example, the first angle is 45° and the second angle is 10°; or, the first angle is 40° and the second angle is 5°; or, the first angle is 45° and the second angle is 5°, etc.

[0142] Please refer to FIG. 7A , FIG. 8A , FIG. 9A , FIG. 10A and FIG. 10C . FIG. 10C is a schematic diagram showing a simulation comparison of the Lorentz force generated by the driving assembly 2 in the embodiments of FIG. 7A , FIG. 8A , FIG. 9A and FIG. 10A .

[0143] The drive component 2 in the prior art of Figure 7A, the drive component 2 in the embodiment of Figure 8A, the drive component 2 in the prior art of Figure 9A, and the drive component 2 in the embodiment of Figure 10A, the magnetization intensity of the magnet group 21, the size of the magnet group 21, the number of turns of the coil 22, and the current flowing through the coil 22 are all equal.

[0144] In FIG10B , the horizontal axis represents the distance of relative movement between the coil 22 and the magnet group 21 along the first direction, and the vertical axis represents the Lorentz force. As can be seen from FIG10B , the Lorentz force generated by the drive assembly 2 in the embodiments of FIG8A and FIG10A of the present application is greater than the Lorentz force generated by the drive assembly 2 in the prior art of FIG7A and FIG9A , and the Lorentz force generated by the drive assembly 2 in the embodiment of FIG10A of the present application is greater than the Lorentz force generated by the drive assembly 2 in the embodiment of FIG8A of the present application. Therefore, the drive assembly 2 in the embodiments of FIG8A and FIG10A of the present application can generate a stronger Lorentz force to provide a stronger driving force, and the second angle in the embodiment of FIG10A is smaller than the first angle, which can enable the drive assembly 2 to further generate a stronger Lorentz force.

[0145] Please refer to Figures 8A, 11A, and 11B in conjunction. Figure 11A is a schematic diagram of the structure of the magnet group 21 in the drive assembly 2 shown in Figure 8A in other embodiments; Figure 11B is a schematic diagram of the structure of the magnet group 21 in the drive assembly 2 shown in Figure 8A in still other embodiments. The drive assembly 2 of the embodiments shown in Figures 11A and 11B can include most of the technical features of the drive assembly 2 of the embodiments shown in Figures 8B and 10B. The following mainly describes the differences between the two, and most of the common contents between the two are not repeated here.

[0146] In some embodiments, the component of the second magnetization direction of the second magnet 214 in the first direction is directed in the same direction as the component of the first magnetization direction of the first magnet 211 located on the same side of the central plane 212 in the first direction.

[0147] In this embodiment, on the same side of the center plane 212, the first magnetization direction of the first magnet 211 relative to the deflection direction of the center plane 212 is the same as the deflection direction of the second magnetization direction of the second magnet 214 relative to the center plane 212. On the enhanced side 213 of the magnet group 21, since the magnetic lines of force of the second magnet 214 on one side of the center plane 212 will be connected to the second magnet 214 on the other side of the center plane 212 along the first direction, the magnetic lines of force of the second magnet 214 will squeeze the magnetic lines of force of the first magnet 211 toward the direction of the center plane 212, thereby increasing the magnetic flux density of the magnet group 21 on the enhanced side 213, and further increasing the magnetic field strength of the magnet group 21 on the enhanced side 213 perpendicular to the winding plane 221 of the coil 22, so that the driving component 2 can generate a larger Lorentz force to provide a stronger driving force.

[0148] In some examples (see FIG. 11A ), the second angle may be equal to the first angle so that the first magnet 211 and the second magnet 214 have the same magnetization direction. Therefore, the first magnet 211 and the second magnet 214 may be prepared using the same raw materials and the same magnetization angle, which is beneficial to the rapid preparation of the first magnet 211 and the second magnet 214 , thereby improving the preparation efficiency of the magnet group 21 .

[0149] In other examples (see Figure 11B), the second angle may not be equal to the first angle. By setting the first angle to be different from the second angle, the component size of the second magnetization direction of the second magnet 214 in the first direction can be designed, thereby designing the degree of squeezing of the magnetic lines of force of the first magnet 211 by the second magnet 214 in the first direction, thereby adjusting the magnetic flux distribution of the magnet group 21 on the enhanced side 213, so that the magnetic field design of the magnet group 21 on the enhanced side 213 is more flexible, so as to be designed for different application scenarios.

[0150] The second angle may be smaller than the first angle, or the second angle may be larger than the first angle.

[0151] Please refer to Figures 8A and 12 in conjunction. Figure 12 is a schematic diagram of the structure of the magnet group 21 in the drive assembly 2 shown in Figure 8A in further embodiments. The drive assembly 2 of the embodiment shown in Figure 12 can include most of the technical features of the drive assembly 2 of the embodiments shown in Figures 8B and 10B. The following mainly describes the differences between the two, and most of the common features between the two are not repeated here.

[0152] In some embodiments, the second magnetization direction of the second magnet 214 may be perpendicular to the magnetic pole surface 215 of the magnet assembly 21 .

[0153] In this embodiment, on the enhanced side 213 of the magnet group 21, the magnetic lines of force of the second magnet 214 on one side of the center plane 212 are connected along the first direction to the second magnet 214 on the other side of the center plane 212, so that the magnetic lines of force of the second magnet 214 will squeeze the magnetic lines of force of the first magnet 211 in the direction of the center plane 212, thereby increasing the magnetic flux density of the magnet group 21 on the enhanced side 213, and further increasing the magnetic field strength of the magnet group 21 on the enhanced side 213 perpendicular to the winding plane 221 of the coil 22, so that the drive component 2 can generate a greater Lorentz force to provide a stronger driving force. In addition, since the second magnetization direction of the second magnet 214 is perpendicular to the magnetic pole surface 215 of the magnet group 21, the preparation of the second magnet 214 is simpler, which is beneficial to the preparation of the magnet group 21.

[0154] Please refer to Figure 8B, Figure 13 and Figure 14. Figure 13 is a process diagram of the preparation method of the magnet group 21 provided in some embodiments of the present application; Figure 14 is a process diagram of the preparation method of the magnet group 21 provided in other embodiments of the present application.

[0155] In some embodiments, the magnet group 21 can be prepared by first assembling the magnet group 23 and then magnetizing the magnet group 23 to obtain the magnet group 21. The magnet group 23 is composed of magnets with magnetic properties.

[0156] In this embodiment, since the magnets are assembled into the magnet group 23 and then magnetized to form the magnet group 21, there is no need to deal with the assembly resistance caused by the magnetic repulsion of the magnets during the assembly process, which reduces the assembly difficulty and thus improves the production efficiency of the magnet group 21. In addition, since there is no magnetic repulsion between the magnets during assembly, the risk of collision between the magnets or between the magnets and other components is reduced, which can reduce the risk of damage to the magnets during the assembly process, thereby improving the production quality and yield of the magnet group 21.

[0157] Exemplarily, the preparation of the magnet group 21 may include steps S11 , S12 and S13 .

[0158] S11, providing a first magnet 231 and a second magnet 232. The magnetic direction of the first magnet 231 is arranged at a non-90° angle to the end surface of the first magnet 231.

[0159] It should be noted that magnetic staking is a theoretical model that describes the spontaneous magnetization process within ferromagnetic materials. It is a microscopic phenomenon. During the spontaneous magnetization process, the atomic magnetic moments within the ferromagnetic material will spontaneously orient and converge. This spontaneous orientation process is the magnetic staking process.

[0160] In the present embodiment, the magnetic chip direction refers to the direction in which the magnetic chips are aligned after the atomic magnetic moments within the first magnet 231 converge, that is, the magnetization direction of the first magnet 231 after magnetization. It should be noted that the dotted line with an arrow within the first magnet 231 in FIG13 represents the magnetic chip direction of the first magnet 231.

[0161] The first magnet 231 can be obtained by directionally cutting the magnetic material so that the magnetic direction of the first magnet 231 forms an angle with the end face of the first magnet 231. The end face of the first magnet 231 is the end face for magnetizing the first magnet 231.

[0162] Specifically, the magnetic direction of the magnetic material can be determined first. For example, this can be determined by heating the magnetic material and observing its magnetic changes. After determining the magnetic direction of the magnetic material, the magnetic material is cut in a cutting direction that intersects the magnetic direction to obtain the first magnet 231. The cutting direction is not perpendicular to the magnetic direction of the magnetic material.

[0163] S12: Arrange the first magnets 231 and the second magnets 232 along the first direction to form a magnet group 23. The second magnets 232 are arranged in equal numbers on both sides of the first magnet 231. The magnet group 23 has a center plane 212 located in the middle of the first magnets 231 and intersecting the first direction.

[0164] Two adjacent magnets can be assembled and connected by a fixing member 233 so that all first magnets 231 and second magnets 232 are assembled into an integral structure. The center plane 212 can be perpendicular to the first direction to facilitate the magnetic field distribution after the magnet group 23 is magnetized.

[0165] The components of the magnetic chips of the first magnet 231 and the magnetic chips of the second magnet 232 located on one side of the center plane 212 in a direction perpendicular to the end face of the first magnet 231 are in the same direction, while the components of the magnetic chips of the first magnet 231 located on different sides of the center plane 212 in a direction perpendicular to the end face of the first magnet 231 are in opposite directions. The end face of the first magnet 231 is the end face that is magnetized.

[0166] S13, magnetizing the magnets located on one side of the center plane 212 along the second direction, and simultaneously magnetizing the magnets located on the other side of the center plane 212 along the third direction, to form a magnet group 21. The second direction and the third direction are in opposite directions.

[0167] The magnetization direction of the magnet is consistent with the direction of the component of the magnetic chip direction perpendicular to the end face of the magnet. The solid line with arrows in the magnet group 21 in Figure 13 represents the magnetization direction of each magnet in the magnet group 21 after magnetization is completed.

[0168] In this embodiment, the magnets on both sides of the central plane 212 are magnetized simultaneously, thereby improving the efficiency of magnetizing the magnet group 23 to form the magnet group 21 .

[0169] It should be noted that FIG13 illustrates the magnet group 21 shown in FIG8B by magnetization. It is understood that the embodiment shown in FIG13 can also be applied to the preparation of the magnet group 21 in other embodiments of the present application. In addition, the method of first assembling to form the magnet group 23 and then magnetizing to form the magnet group 21 in the embodiment of the present application can also be applied to the magnet groups 21 in other embodiments, and does not limit the magnetization direction of each magnet in the magnet group 21.

[0170] In other embodiments, the magnet group 21 may be prepared by first magnetizing a plurality of magnets to form a plurality of magnets, and then assembling the magnets to form the magnet group 21 .

[0171] In this embodiment, by magnetizing a plurality of magnets and then assembling them to form the magnet group 21 , the difficulty of magnetizing each magnet can be reduced, thereby improving the magnetization efficiency.

[0172] Exemplarily, the preparation of the magnet group 21 may include steps S21 , S22 and S23 .

[0173] S21, providing a first magnet 231 and a second magnet 232. The magnetic direction of the first magnet 231 is arranged at an angle to the end surface of the first magnet 231.

[0174] It should be noted that the dotted line with an arrow in the first magnet 231 in FIG. 14 represents the magnetic direction of the first magnet 231 .

[0175] The first magnet 231 can be obtained by directional cutting of the magnetic material, and the magnetic direction of the first magnet 231 is set at an angle to the end face of the first magnet 231 .

[0176] S22, arranging all the first magnets 231 and the second magnets 232, and magnetizing all the first magnets 231 and the second magnets 232 to obtain the first magnet 211 and the second magnet 214. The magnetic direction of the arranged first magnets 231 is the same as the magnetic direction of the second magnets 232, and both are the same as the magnetization direction.

[0177] S23 , assembling all the first magnets 211 and the second magnets 214 .

[0178] All of the first magnets 211 and the second magnets 214 are arranged in a first direction, and an equal number of the second magnets 214 are arranged on both sides of the first magnet 211. The magnet group 21 has a central plane 212, which is located in the middle of the first magnets 211 and intersects the first direction. The north pole faces of the first magnets 211 and the north pole faces of the second magnets 214 located on the same side of the central plane 212 are oriented in the same direction, while the north pole faces of the two first magnets 211 located on different sides of the central plane 212 are oriented in opposite directions.

[0179] In this embodiment, by arranging the first magnets 231 and the second magnets 232 and then magnetizing them, it is only necessary to magnetize all the first magnets 231 and the second magnets 232 in one magnetizing direction to obtain the first magnet 211 and the second magnet 214, thereby reducing the magnetization difficulty and improving the magnetization efficiency.

[0180] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the scope of protection of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0181] It should be noted that all the above drawings are for illustrative purposes only and do not represent the actual size of the product. Furthermore, the dimensional ratios between the components in the drawings are not intended to limit the actual product of the present application.

[0182] The above are only some of the embodiments and implementations of this application. The scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A driving motor (10), applied to a camera device (100), characterized in that, The driving motor (10) includes a motor bracket (1) and a driving component (2); The driving component (2) includes a magnet group (21) and a coil (22); The magnet group (21) includes a first magnet (211) and a second magnet (214). The first magnet (211) and the second magnet (214) are arranged in a first direction, and the second magnets (214) are arranged in equal numbers on both sides of the first magnet (211); The central plane (212) of the magnet group (21) is located in the middle of the first magnet (211) and intersects the first direction. The N-pole surfaces of the first magnet (211) and the second magnet (214) on the same side of the central plane (212) face the same direction, and the N-pole surfaces of the first magnet (211) on different sides of the central plane (212) face opposite directions; The first magnet (211) has a first magnetization direction, and the extension line of the first magnetization direction intersects the central plane (212) at a first angle, and the first angle is not equal to 90°; 2. The drive motor (10) according to claim 1, characterized in that, The second magnet (214) has a second magnetization direction, and the extension line of the second magnetization direction is arranged at a second angle with the central plane (212), and the second angle is smaller than the first angle; 3. The drive motor (10) according to claim 2, characterized in that, The component of the second magnetization direction in the first direction is opposite to the component of the first magnetization direction of the first magnet (211) on the same side of the central plane (212) in the first direction; Or, the component of the second magnetization direction in the first direction is the same as the component of the first magnetization direction of the first magnet (211) on the same side of the central plane (212) in the first direction; 4. The drive motor (10) according to claim 1, characterized in that, The second magnet (214) has a second magnetization direction, and the extension line of the second magnetization direction is arranged at a second angle with the central plane (212), and the second angle is equal to the first angle; 5. The drive motor (10) according to claim 4, characterized in that, The component of the second magnetization direction in the first direction is the same as the component of the first magnetization direction of the first magnet (211) on the same side of the central plane (212) in the first direction; 6. The drive motor (10) according to claim 1, characterized in that, The second magnet (214) has a second magnetization direction, and the second magnetization direction is perpendicular to the magnetic pole surface (215) of the magnet group (21); 7. The drive motor (10) according to any one of claims 1 to 6, characterized in that, The components of the first magnetization directions of the two first magnets (211) in the first direction point in the same direction, and the first angles of the two first magnets (211) are the same or different; 8. The drive motor (10) according to any one of claims 1 to 7, characterized in that, The value of the first angle is in the range of 5° to 45°; 9. A camera device (100), characterized in that, It includes a lens (20), an image sensor (30), and the driving motor (10) according to any one of claims 1 to 8. The lens (20) is spaced apart from the image sensor (30). The magnet group (21) of the driving motor (10) is connected to at least part of the lens elements (201) of the lens (20) or the image sensor (30), and the driving motor (10) is used to drive at least part of the lens elements (201) of the lens (20) to move relative to the image sensor (30).

10. An electronic device (1000), characterized in that, Comprising an image processor 500 and a camera device (100) as claimed in claim 9, the image processor 500 being communicatively connected to the camera device (100).

11. A method for preparing a magnet group (21), characterized in that, Comprising: Providing a first magnet (231) and a second magnet (232), wherein a magnetic domain direction of the first magnet (231) is arranged at an angle other than 90° with respect to an end face of the first magnet (231); Arranging the first magnet (231) and the second magnet (232) in a first direction to form a magnet group (23), wherein the second Magnets (232) are arranged in equal numbers on both sides of two first magnets (231), the magnet group (23) having a central plane (212), the central plane (212) being located in the middle of the first magnets (231) and intersecting the first direction; and Magnetizing the magnets located on one side of the central plane (212) in a second direction and simultaneously magnetizing the magnets located on the other side of the central plane (212) in a third direction to form a magnet stone group (21), wherein the second direction and the third direction point in opposite directions.

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