Drive motor, camera module, and electronic device

Abstract

The present application relates to the technical field of electronic devices, and provides a drive motor, a camera module, and an electronic device, used for solving the problem of incapability of realizing the miniaturization of the camera module due to the large size of the drive motor. The drive motor comprises a base, a carrier, and a driving assembly. The carrier is provided with a lens mounting hole. The driving assembly is located on one side of the lens mounting hole, and the lens mounting hole and the driving assembly are arranged along a radial direction of the lens mounting hole. The driving assembly is connected between the carrier and the base, and the driving assembly is used for driving the carrier to move relative to the base along an axial direction of the lens mounting hole. The drive motor provided in the present application is used for driving an optical lens to move.

Description

Drive motors, camera modules, and electronic devices

[0001] This application claims priority to Chinese Patent Application No. 202411204922.4, filed with the State Intellectual Property Office of China on August 29, 2024, entitled "Drive Motor, Camera Module and Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of electronic device technology, and in particular to a drive motor, a camera module, and an electronic device. Background Technology

[0003] Currently, electronic devices such as mobile phones, tablets, and personal computers (PCs) have camera modules. Camera modules are used to capture video and images.

[0004] In some electronic devices, a drive motor is integrated into the camera module. The drive motor is used to drive the movement of the optical lens to achieve autofocus. However, existing drive motors are relatively large and cannot meet the requirements for miniaturization of camera modules. Summary of the Invention

[0005] This application provides a drive motor, a camera module, and an electronic device to solve the problem that the drive motor is too large and cannot meet the requirement of miniaturizing the camera module.

[0006] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0007] In a first aspect, a drive motor is provided, comprising a base, a carrier, and a drive assembly. The carrier has a lens mounting hole. The drive assembly is located on one side of the lens mounting hole, and the lens mounting hole and the drive assembly are arranged radially along the lens mounting hole. The drive assembly is connected between the carrier and the base, and is used to drive the carrier to move axially relative to the base along the lens mounting hole.

[0008] By placing the lens mounting hole on one side, the radial volume of the drive motor within the lens mounting hole can be reduced, thereby reducing the overall size of the drive motor and consequently the size of the camera module, meeting the requirements for miniaturization. This simple structure simplifies the connection between the carrier and the drive components, making the structure more compact and facilitating manufacturing and assembly.

[0009] Optionally, the drive assembly includes a coil assembly and a magnet assembly. The coil assembly is disposed on the base. The coil assembly includes a coil having a first side and a second side spaced apart along the axial direction of the lens mounting hole. The magnet assembly is disposed on the carrier. The magnet assembly includes a first set of magnets, comprising a first magnet and a second magnet arranged axially along the lens mounting hole. The first magnet is opposite to the first side, and the second magnet is opposite to the second side, with the polarity of the end of the first magnet facing the first side opposite to the polarity of the end of the second magnet facing the second side. This arrangement reduces the size of the drive assembly, and consequently, the size of the drive motor.

[0010] Optionally, the magnet assembly further includes a second set of magnets. The second set of magnets includes a third magnet and a fourth magnet arranged axially along the lens mounting hole. The first and third magnets are arranged opposite each other, as are the second and fourth magnets. A first side is located between the first and third magnets, and a second side is located between the second and fourth magnets. The polarity of the third magnet facing the first side is opposite to that of the first magnet, and the polarity of the fourth magnet facing the second side is opposite to that of the second magnet. In this way, by arranging a second set of magnets on both sides of the coil assembly, and simultaneously arranging the third magnet with polarity opposite to that of the first magnet on the opposite side, and the fourth magnet with polarity opposite to that of the second magnet on the opposite side, the magnetic field strength can be increased. This allows the drive assembly to provide a larger driving force, driving the carrier to rapidly move the optical lens, thus achieving rapid focusing of the camera module.

[0011] Optionally, the polarity of the first magnet facing the first side is opposite to the polarity of the first magnet facing away from the first side, and the polarity of the third magnet facing the first side is opposite to the polarity of the third magnet facing away from the first side. The polarity of the second magnet facing the second side is opposite to the polarity of the second magnet facing away from the second side, and the polarity of the fourth magnet facing the second side is opposite to the polarity of the fourth magnet facing away from the second side. By setting the magnetism of the first, second, third, and fourth magnets, the magnetic field strength can be increased, enabling the drive assembly to provide a larger driving force.

[0012] Optionally, the first and second sets of magnets are arranged in a first direction, while the arrangement direction between the drive assembly and the lens mounting hole is a second direction. The first direction is perpendicular to the second direction. This arrangement allows the first and second sets of magnets to occupy less space, making the drive assembly structure more compact and facilitating the miniaturization of the camera module.

[0013] Optionally, the coil assembly also includes a substrate on which the coil is disposed. This provides the substrate with a stable support structure for the coil, effectively fixing it in place and preventing displacement or deformation during use, thereby improving the reliability of the drive assembly.

[0014] Optionally, the substrate includes a circuit board, which includes a metal portion, at least a portion of which forms a coil. By directly integrating the coil onto the metal portion of the circuit board, the thickness of the coil assembly in the first direction can be reduced, thereby increasing the integration density of the coil assembly, improving structural compactness, and reducing the size of the drive motor. Furthermore, having at least a portion of the metal portion of the circuit board form a coil simplifies electrical connections, reduces additional wiring and connectors, thereby lowering the risk of failure and simplifying circuit design.

[0015] Optionally, the substrate includes a first circuit board and a second circuit board stacked together. The first circuit board includes a first metal portion, and the second circuit board includes a second metal portion. The coil includes a first coil and a second coil connected to each other. At least a portion of the metal portion of the first circuit board forms the first coil, and at least a portion of the metal portion of the second circuit board forms the second coil. In this way, by connecting the first and second coils, the effective area of ​​the coil can be increased, thereby increasing the magnetic flux, increasing the induced electromotive force caused by the change in the magnetic field, and improving the driving force of the drive component.

[0016] Optionally, the driving assembly also includes a magnetic sensor, which is disposed on the first or second circuit board and located within the area surrounded by the first and / or second coils. This simplifies the assembly of the magnetic sensor and simplifies the structure of the camera assembly. Furthermore, positioning the magnetic sensor on the first or second circuit board allows for more accurate measurement of changes in the magnetic field, which helps improve the sensor's sensitivity and response rate to external magnetic fields. Additionally, the location of the magnetic sensor within the area surrounded by the first and / or second coils reduces the influence of the external environment on the measurement results, improving the stability and reliability of the measurement.

[0017] Optionally, at least one of the first circuit board and the second circuit board is provided with a first groove, and the magnetic sensor is disposed in the first groove. This arrangement reduces the thickness of the coil assembly in the first direction, improves the integration of the coil assembly, avoids interference with other components, enhances structural compactness, and reduces the size of the drive motor.

[0018] Optionally, the drive motor also includes a magnetic guide rail, which is disposed on the base and extends axially along the lens mounting hole. The magnetic guide rail engages with a first set of magnets, and / or, the magnetic guide rail engages with a second set of magnets. By setting the magnetic guide rail to engage with the first set of magnets and / or the second set of magnets, a stable adsorption force can be provided, allowing the carrier to adhere to the base. In addition, the magnetic guide rail provides a stable track for the movement of the carrier, which helps to achieve more precise positioning, thereby improving the accuracy of focusing or adjusting the optical lens.

[0019] Optionally, the magnetic guide rail includes a first magnetic guide rail and a second magnetic guide rail. The first magnetic guide rail and a first set of magnets are attracted together. The second magnetic guide rail and the second set of magnets are attracted together. This provides a stronger attraction force, making the attraction between the magnetic component and the magnetic guide rail more stable.

[0020] Optionally, the drive motor further includes at least one sliding shaft, which is disposed on the base. The at least one sliding shaft extends axially along the lens mounting hole. The carrier is provided with at least one sliding groove, which extends axially along the lens mounting hole. The at least one sliding shaft is slidably received within the at least one sliding groove. In this way, the carrier is movably connected to the base via the sliding shaft, resulting in relatively stable sliding friction resistance between the carrier and the base, allowing for smoother movement of the carrier and reducing resistance and wear during carrier movement. Furthermore, the sliding shaft ensures that the carrier moves along a predetermined path, making it easier to achieve high-precision positioning when performing focusing operations.

[0021] Optionally, at least one sliding shaft includes a first sliding shaft and a second sliding shaft. At least one sliding groove includes a first sliding groove and a second sliding groove. The first sliding shaft is slidably received within the first sliding groove, and the second sliding shaft is slidably received within the second sliding groove. In this way, the first and second sliding shafts can provide better support for the carrier, making the carrier more stable during movement and helping to avoid deviation and swaying. In addition, this arrangement can provide more precise guidance, helping to reduce swaying during carrier movement, thereby enhancing the positioning accuracy of the carrier.

[0022] Optionally, the first slide rail and the second slide rail are spaced apart along a first direction, and the drive assembly is located between the first slide rail and the second slide rail. This allows for a more compact overall structure of the drive motor and reduces its size.

[0023] Optionally, the first and second slides extend away from the lens mounting hole and penetrate the side wall of the carrier. This reduces the weight of the carrier and facilitates the assembly of the carrier with the base.

[0024] Optionally, the first slide groove includes a first bottom surface and two side surfaces located on either side of the first bottom surface. The first bottom surface is flat, and the first sliding shaft contacts the first bottom surface. The distance between the two side surfaces of the first slide groove is greater than the diameter of the first sliding shaft. The second slide groove includes a second bottom surface, which is a V-shaped surface. The second sliding shaft contacts the two surfaces forming the second bottom surface. In this way, the first bottom surface of the first slide groove is flat, allowing the carrier to maintain a stable path during movement. The second bottom surface of the second slide groove is a V-shaped surface, providing better guiding effect, and the contact between the second sliding shaft and the two surfaces forming the second bottom surface provides more precise positioning. Furthermore, since the distance between the two side surfaces is greater than the diameter of the first sliding shaft, this allows for greater flexibility in the assembly of the first slide groove and the first sliding shaft, improving the assembly error tolerance.

[0025] Optionally, the carrier includes a mounting portion and a connecting portion. A lens mounting hole is located on the mounting portion. The connecting portion and the drive assembly are located on the same side of the lens mounting hole. A first sliding groove and a second sliding groove are located on the connecting portion. The height of the mounting portion along the axial direction of the lens mounting hole is a first height, and the height of the connecting portion along the axial direction of the lens mounting hole is a second height, where the first height is less than the second height. This reduces the weight of the mounting portion, thereby reducing the weight of the carrier. Furthermore, the travel of the carrier can be adjusted by setting the height of the connecting portion. A larger connecting portion height also provides more mounting space for the magnetic components, making the installation of the magnetic components more stable.

[0026] Optionally, the top of the connector is connected to the mounting part along the axial direction of the lens mounting hole. This simplifies the structure and makes operation easier.

[0027] Optionally, the carrier also includes a second groove located between the first and second slides, extending through the carrier in a direction away from the lens mounting hole. The drive assembly is disposed in the second groove. This reduces the space occupied by the carrier and drive assembly, making the drive motor structure more compact.

[0028] Optionally, the drive motor also includes a connector disposed in the second groove. Both the first and second sets of magnets are disposed on the connector. This integrates the first and second sets of magnets onto the connector, facilitating their installation. Simultaneously, the connector provides a larger mounting area and ensures a more stable connection between the first and second sets of magnets and the carrier.

[0029] Optionally, the surface of the connecting part facing away from the mounting part is the first surface, and the surface of the connecting part facing the mounting part is the second surface. The second side is provided with a third groove recessed into the first side. This reduces the weight of the connecting part, which is beneficial for controlling the overall weight of the carrier and facilitates the driving of the carrier by the drive assembly.

[0030] Optionally, the third groove extends through the connecting portion along the first direction. This reduces the weight of the connecting portion and helps control the overall weight of the carrier.

[0031] Optionally, the third groove is connected to the first slide groove, the second slide groove, and the second groove. This can reduce the weight of the connection and help control the overall weight of the carrier.

[0032] Optionally, the mounting body includes a first fixing part and a second fixing part, and a third fixing part, which are axially spaced along the lens mounting hole. The first fixing part and the second fixing part are located on opposite sides of the connecting part, and at least one sliding shaft has its two ends respectively located on the first fixing part and the second fixing part. The third fixing part connects between the first fixing part and the second fixing part and is located on the side of the connecting part opposite to the mounting part. This design simplifies the structure of the mounting body, reduces its volume, and consequently makes the entire drive motor structure more compact and smaller. Furthermore, this structure also reduces the weight of the mounting body, resulting in a smaller overall drive motor weight and consequently reducing the weight of the camera module.

[0033] Optionally, the drive assembly includes a coil assembly and a magnet assembly. The coil assembly is disposed on the carrier. The coil assembly includes a coil having a first side and a second side spaced apart along the axial direction of the lens mounting hole. The magnet assembly is disposed on the base. The magnet assembly includes a first set of magnets, comprising a first magnet and a second magnet arranged axially along the lens mounting hole. The first magnet is opposite to the first side, and the second magnet is opposite to the second side, with the polarity of the end of the first magnet facing the first side opposite to the polarity of the end of the second magnet facing the second side. This arrangement reduces the size of the drive assembly, and consequently, the size of the drive motor.

[0034] Optionally, the magnet assembly further includes a second set of magnets. The second set of magnets includes a third magnet and a fourth magnet arranged axially along the lens mounting hole. The first and third magnets are arranged opposite each other, as are the second and fourth magnets. A first side is located between the first and third magnets, and a second side is located between the second and fourth magnets. The polarity of the third magnet facing the first side is opposite to that of the first magnet, and the polarity of the fourth magnet facing the second side is opposite to that of the second magnet. In this way, by arranging a second set of magnets on both sides of the coil assembly, and simultaneously arranging the third magnet with polarity opposite to that of the first magnet on the opposite side, and the fourth magnet with polarity opposite to that of the second magnet on the opposite side, the magnetic field strength can be increased. This allows the drive assembly to provide a larger driving force, driving the carrier to rapidly move the optical lens, thus achieving rapid focusing of the camera module.

[0035] Secondly, a camera module is also provided, including an optical lens, a photosensitive element, and a drive motor as described in any of the above. The photosensitive element is disposed on the light-emitting side of the optical lens, and the optical lens is fixed in the mounting hole of the drive motor.

[0036] Since the camera module provided in this application includes a drive motor, and the drive motor is the drive motor of any of the above technical solutions, both can solve the same problem and achieve the same effect.

[0037] Thirdly, an electronic device is also provided, including a housing and the aforementioned camera module, wherein the camera module is housed within the housing.

[0038] Since the electronic device provided in this application includes a camera module, and the camera module is the camera module of the above technical solution, both can solve the same problem and achieve the same effect.

[0039] The technical effects of any of the design methods in the second to third aspects can be found in the technical effects of different design methods in the first aspect, and will not be repeated here. Attached Figure Description

[0040] Figure 1 is a perspective view of an electronic device provided in some embodiments of this application;

[0041] Figure 2 is an exploded view of the electronic device shown in Figure 1;

[0042] Figure 3 is a perspective view of the camera module inside the electronic device shown in Figures 1 and 2;

[0043] Figure 4 is an exploded view of the camera module shown in Figure 3;

[0044] Figure 5 is a schematic diagram of the optical lens structure inside the camera module shown in Figure 4;

[0045] Figure 6 is a 3D view of the drive motor in the camera module shown in Figure 4;

[0046] Figure 7 is an exploded view of the drive motor shown in Figure 6;

[0047] Figure 8 is a perspective view of the drive component in the drive motor provided in some embodiments of this application;

[0048] Figure 9 is a perspective view of the drive assembly in the drive motor shown in Figure 7;

[0049] Figure 10 is a diagram showing the magnetic pole arrangement of the magnet assembly in the drive assembly shown in Figure 9;

[0050] Figure 11 is a diagram showing the overall magnetic pole arrangement of the magnet assembly in the drive assembly shown in Figure 9;

[0051] Figure 12 is a perspective view of the coil assembly in the drive assembly shown in Figure 9;

[0052] Figure 13 is a cross-sectional view of the coil assembly shown in Figure 12;

[0053] Figure 14 is a perspective view of the magnetic guide rail and the base in the drive motor shown in Figure 7.

[0054] Figure 15 is a perspective view of the sliding shaft and the base of the drive motor shown in Figure 7;

[0055] Figure 16 is a perspective view of the sliding shaft and carrier in the drive motor shown in Figure 7;

[0056] Figure 17 is a perspective view of the carrier in the drive motor shown in Figure 16;

[0057] Figure 18 is a top view of the carrier shown in Figure 17;

[0058] Figure 19 is a front view of the carrier shown in Figure 17.

[0059] Reference numerals: 100, Electronic device; 10, Screen; 11, Light-transmitting cover; 12, Display screen; 20, Back shell; 21, Back cover; 211, Mounting port; 22, Frame; 23, Middle plate; 30, Camera module; 31, Optical lens; 31a, Light-incident surface; 31b, Light-exit surface; 311, Lens barrel; 312, Optical lens group; 32, Drive motor; 321 Connector; 322, Base; 3221, First fixing part; 3222, Second fixing part; 3223, Third fixing part; 323, Carrier; 3231, Lens mounting hole; 3232, Mounting part; 3233, Connecting part; 3233a, First surface; 3233b, Second surface; 3234, Second groove; 3235, Third groove; 3236, Slide groove; 3236a, First slide groove; 3236b, Second slide groove; 3237, First bottom surface; 3238, Second bottom surface; 324, Driving assembly; 3241, Magnetic sensor; 3242, First groove; 325, Coil assembly; 3251, First side; 3252, Second side; 3253, Substrate; 3254a, First circuit board; 3254b, Second circuit board; 3255, Coil; 3255a, First coil body; 3255b, Second coil body; 326. Magnet assembly; 3261. First set of magnets; 3261a. First magnet; 3261b. Second magnet; 3262. Second set of magnets; 3262a. Third magnet; 3262b. Fourth magnet; 327. Magnetic guide rail; 327a. First magnetic guide rail; 327b. Second magnetic guide rail; 328. Sliding shaft; 328a. First sliding shaft; 328b. Second sliding shaft; 33. Photosensitive device; 34. Housing; 40. Motherboard; 50. Camera decorative cover; 60. Shell. Detailed Implementation

[0060] In the embodiments of this application, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," and "fourth" may explicitly or implicitly include one or more of that feature.

[0061] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0062] In the embodiments of this application, it should be noted that the descriptions of "parallel" and "perpendicular" both indicate approximate parallelism within a certain allowable error range, which can be a range where the deviation angle relative to absolute parallelism is less than or equal to 5°. The description of "consistent direction" both indicate approximate consistency within a certain allowable error range, which can be a range where the deviation angle relative to absolute consistency is less than or equal to 5°.

[0063] This application provides an electronic device, which is a type of electronic device with a shooting function. Specifically, the electronic device can be a portable electronic device or other suitable electronic device. For example, the electronic device can be a mobile phone, tablet personal computer, laptop computer, personal digital assistant (PDA), camera, personal computer, laptop computer, in-vehicle equipment, wearable device, augmented reality (AR) glasses, AR headset, virtual reality (VR) glasses, or VR headset, etc.

[0064] Please refer to Figures 1 and 2. Figure 1 is a perspective view of an electronic device 100 provided in some embodiments of this application, and Figure 2 is an exploded view of the electronic device 100 shown in Figure 1. In this embodiment, the electronic device 100 is a mobile phone. The electronic device 100 includes a housing 60, a camera module 30, a motherboard 40, and a camera decorative cover 50. The housing 60 is used for dust protection of internal components such as the camera module 30 and the motherboard 40. The materials of the housing 60 include, but are not limited to, metal and plastic. The housing can be formed by assembling multiple parts; for example, the housing 60 can be assembled from a screen 10 and a back cover 20. In some other embodiments, the housing 60 can also be a one-piece molded structure.

[0065] It is understood that Figures 1 and 2 only schematically illustrate some components included in the electronic device 100, and the actual shape, size, location, and construction of these components are not limited to Figures 1 and 2. In some other embodiments, the electronic device 100 may also exclude the screen 10 and the camera cover 50.

[0066] Screen 10 is used to display images, videos, etc. Screen 10 includes a light-transmitting cover plate 11 and a display screen 12. The light-transmitting cover plate 11 is stacked and fixedly connected to the display screen 12. The light-transmitting cover plate 11 is mainly used to protect the display screen 12 and prevent dust. The material of the light-transmitting cover plate 11 includes, but is not limited to, glass. The display screen 12 can be a flexible display screen or a rigid display screen. For example, the display screen 12 can 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 (MLED) display screen, a micro organic light-emitting diode (MOLED) display screen, a quantum dot light-emitting diode (QLED) display screen, or a liquid crystal display (LCD).

[0067] The back cover 20 protects the internal electronic components of the electronic device 100. The back cover 20 may include a back cover 21 and a frame 22. The back cover 21 is located on the side of the display screen 12 away from the light-transmitting cover plate 11 and is stacked on top of the light-transmitting cover plate 11 and the display screen 12. The frame 22 is located between the back cover 21 and the light-transmitting cover plate 11, and the frame 22 is fixed to the back cover 21. For example, the frame 22 can be fixed to the back cover 21 by adhesive. The frame 22 may also be integrally formed with the back cover 21, i.e., the frame 22 and the back cover 21 are a single integral structure. The light-transmitting cover plate 11 can be fixed to the frame 22 by adhesive. The light-transmitting cover plate 11, the back cover 21, and the frame 22 form an internal receiving space for the electronic device 100. This internal receiving space accommodates the display screen 12.

[0068] For ease of description below, the stacking direction of the light-transmitting cover 11, display screen 12, and back cover 21 in electronic device 100 is defined as the Z-axis direction. The plane parallel to the light-transmitting cover 11, display screen 12, and back cover 21 is defined as the XY plane. It is understood that the coordinate system setting of electronic device 100 can be flexibly set according to specific actual needs, and no specific limitation is made here.

[0069] The camera module 30 is used to capture photos / videos. The camera module 30 integrates a drive motor, which is used for automatic focusing (AF). The camera module 30 is fixed within the internal cavity of the electronic device 100. For example, the camera module 30 can be fixed to the surface of the display screen 12 facing the back cover 21 by means of threaded connection, snap-fit, welding, etc. In other embodiments, referring to FIG2, the electronic device 100 also includes a middle plate 23. The middle plate 23 is fixed around the inner surface of the frame 22. For example, the middle plate 23 can be fixed to the frame 22 by welding. The middle plate 23 can also be integrally formed with the frame 22. The middle plate 23 serves as the structural "skeleton" of the electronic device 100, and the camera module 30 can be fixed to the middle plate 23 by means of threaded connection, snap-fit, welding, etc.

[0070] The camera module 30 can be used as a rear camera module or a front camera module.

[0071] For example, referring to Figures 1 and 2, the camera module 30 is fixed to the surface of the middle plate 23 facing the back cover 21, and the light-incident surface of the camera module 30 faces the back cover 21. The back cover 21 has a mounting opening 211, and the camera decorative cover 50 covers and is fixed to the mounting opening 211. The camera decorative cover 50 is used to protect the camera module 30. In some embodiments, the camera decorative cover 50 protrudes to the side of the back cover 21 away from the light-transmitting cover plate 11. This increases the mounting space of the camera module 30 along the Z-axis within the electronic device 100. In other embodiments, the camera decorative cover 50 may be flush with the back cover 21 or recessed into the internal receiving space of the electronic device 100. The camera decorative cover 50 has a light-transmitting window 51. The light-transmitting window 51 allows light from the scene to enter the light-incident surface of the camera module 30. In this embodiment, the camera module 30 serves as a rear camera module of the electronic device 100. For example, camera module 30 can be used as a rear-facing main camera module. In other examples, camera module 30 can also be used as a rear-facing wide-angle camera module or a telephoto camera module.

[0072] In other embodiments, the camera module 30 may also be fixed to the surface of the middle plate 23 facing the light-transmitting cover plate 11. The light-incident surface of the camera module 30 faces the light-transmitting cover plate 11. The display screen 12 is provided with a light path avoidance hole. This light path avoidance hole allows light from the scene to pass through the light-transmitting cover plate 11 and then enter the light-incident surface of the camera module 30. In this way, the camera module 30 is used as a front-facing camera module of the electronic device 100.

[0073] The motherboard 40 includes a circuit board and electronic components disposed on the circuit board. The electronic components include, but are not limited to, a central processing unit (CPU), an intelligent algorithm chip, an image processing chip, or a power management IC (PMIC).

[0074] The motherboard 40 is fixed within the internal housing space of the electronic device 100. For example, the motherboard 40 can be fixed to the middle plate 23 by means of threaded connection, snap-fit, etc. When the electronic device 100 does not include the middle plate 23, the motherboard 40 can also be fixed to the surface of the display screen 12 facing the back cover 21 by means of threaded connection, snap-fit, etc.

[0075] The motherboard 40 is electrically connected to the camera module 30. The motherboard 40 is used to receive and process electrical signals containing image information from the camera module 30, and also to control the camera module 30 to achieve automatic focusing (AF).

[0076] The following section mainly introduces the camera module 30.

[0077] Please refer to Figures 3 and 4. Figure 3 is a perspective view of the camera module 30 inside the electronic device 100 shown in Figures 1 and 2, and Figure 4 is an exploded view of the camera module 30 shown in Figure 3. In this embodiment, the camera module 30 includes an optical lens 31, a drive motor 32, a photosensitive device 33, and a housing 34. The optical lens 31, the drive motor 32, and the photosensitive device 33 are disposed within the housing 34, and the housing 34 provides protection and support for the optical lens 31, the drive motor 32, and the photosensitive device 33.

[0078] It is understood that Figures 3 and 4 only schematically illustrate some of the components included in the camera module 30, and the actual shape, size, position, and construction of these components are not limited to Figures 3 and 4. In some embodiments, the camera module may also exclude the housing 34.

[0079] The optical lens 31 is used to image the subject being photographed. For example, the optical lens 31 can be a vertical lens with its optical axis extending along the Z-axis. The optical lens 31 can also be a periscope lens with its optical axis parallel to the XY plane. The optical lens 31 is fixed within the drive motor 32.

[0080] Please refer to Figure 5, which is a schematic diagram of the optical lens structure within the camera module shown in Figure 4. The optical lens 31 includes a lens barrel 311 and an optical lens assembly 312. The lens barrel 311 is used to fix and protect the optical lens assembly 312. The lens barrel 311 has a cylindrical structure, that is, it is open at both ends in the optical axis direction. The optical lens assembly 312 is installed inside the lens barrel 311. The optical lens assembly 312 includes at least one optical lens. When the optical lens assembly 312 includes multiple optical lenses, the multiple optical lenses are stacked along the optical axis direction.

[0081] The optical lens 31 may also consist only of the optical lens group 312. The optical lens group 312 is mounted within the drive motor 32. Thus, the drive motor 32 secures and protects the optical lens group 312. In this embodiment, the drive motor 32 and the optical lens 31 are integrated, which helps to reduce the size of the camera module 30.

[0082] By designing the structural composition of the optical lens group 312 and the shape and size of each optical lens, optical lenses with different characteristics such as wide-angle, standard, and telephoto can be obtained. In order to achieve high resolution and ensure excellent optical performance, the lenses of the optical lens group often use high-mass lenses, such as glass lenses, high-density lenses, etc.

[0083] Please refer to Figure 5. The optical lens 31 includes an incident light surface 31a and an exit light surface 31b. The incident light surface 31a faces the surface of the object being photographed when the optical lens 31 is in use. Light from the object enters the optical lens 31 through this incident light surface 31a. The exit light surface 31b faces away from the surface of the object being photographed when the optical lens 31 is in use. Light from the object exits through this exit light surface 31b.

[0084] The photosensitive device 33 mainly converts the captured light signal into an electrical signal to generate an image. The photosensitive device 33 is disposed on the light-emitting side of the optical lens 31. The light-emitting side of the optical lens 31 refers to the side of the optical lens 31 whose light-emitting surface 31b is away from the light-incident surface 31a.

[0085] The drive motor 32 is used to drive the optical lens 31 to move in order to achieve autofocus. Specifically, the drive motor 32 can be used only to drive the optical lens 31 to move along the Z-axis direction. In this way, the drive motor 32 is used to adjust the distance between the optical lens 31 and the photosensitive device 33 along the extension direction of the Z-axis, thereby enabling autofocus.

[0086] For example, the drive motor 32 in this application is mainly used to realize the autofocus function.

[0087] Please refer to Figure 6, which is a perspective view of the drive motor 32 in the camera module 30 shown in Figure 4, and Figure 7 is an exploded view of the drive motor 32 shown in Figure 6. The drive motor 32 includes a base 322, a carrier 323, and a drive assembly 324.

[0088] It is understood that Figures 6 and 7 only schematically show some of the components included in the drive motor 32, and the actual shape, size, position and construction of these components are not limited by Figures 6 and 7.

[0089] The carrier 323 is provided with a lens mounting hole 3231. The lens mounting hole 3231 is open at both ends along its axial direction, and the axial direction of the lens mounting hole 3231 is parallel to the Z-axis. The optical lens 31 in Figure 5 is mounted within the lens mounting hole 3231. In some embodiments, the optical lens 31 can be mounted within the lens mounting hole 3231 via a detachable connection such as snap-fit ​​or threaded connection, to facilitate replacement of the optical lens 31. In other embodiments, the optical lens 31 can be adhesively bonded to the lens mounting hole 3231. When the optical lens 31 is mounted within the lens mounting hole 3231, the extension direction of the optical axis of the optical lens 31 is aligned with the axial direction of the lens mounting hole 3231. The carrier 323 is formed of materials including, but not limited to, metal and plastic. In some embodiments, the carrier 323 is formed of plastic.

[0090] The drive assembly 324 is located on one side of the lens mounting hole 3231, and the lens mounting hole 3231 and the drive assembly 324 are arranged radially along the lens mounting hole 3231. By placing the lens mounting hole 3231 on one side, the radial volume of the drive motor 32 in the lens mounting hole 3231 can be reduced, thereby reducing the overall volume of the drive motor 32 and consequently reducing the volume of the camera module 30. This structure is simple, simplifies the connection between the carrier 323 and the drive assembly 324, making the structure more compact and facilitating manufacturing and assembly.

[0091] The drive assembly 324 is connected between the carrier 323 and the base 322. The drive assembly 324 is used to drive the carrier 323 to move relative to the base 322 along the axial direction of the lens mounting hole 3231 to achieve autofocus.

[0092] Specifically, please refer to Figure 7 and Figure 8. Figure 8 is a perspective view of the drive assembly 324 in the drive motor 32 provided in some embodiments of this application. The drive assembly 324 includes a coil assembly 325 and a magnet assembly 326. The coil assembly 325 is disposed in the base 322 in Figure 7, which facilitates the connection of the coil assembly 325 to power. The coil assembly 325 includes a coil 3255, which has a first side 3251 and a second side 3252 spaced apart along the axial direction of the lens mounting hole 3231.

[0093] Referring again to Figure 7 and in conjunction with Figure 8, the magnet assembly 326 is disposed on the carrier 323 in Figure 7. The magnet assembly 326 includes a first set of magnets 3261, which includes a first magnet 3261a and a second magnet 3261b disposed axially along the lens mounting hole 3231. The polarity of the end of the first magnet 3261a facing the first side 3251 is opposite to the polarity of the second magnet 3261b facing the second side 3252. This arrangement reduces the size of the drive assembly 324, thereby reducing the size of the drive motor 32.

[0094] For example, the end of the first magnet 3261a facing the first side 3251 is the N pole, and the end of the second magnet 3261b facing the second side 3252 is the S pole, or the end of the first magnet 3261a facing the first side 3251 is the S pole, and the end of the second magnet 3261b facing the second side is the N pole.

[0095] This application uses the end of the first magnet 3261a facing the first side 3251 as the N pole and the end of the second magnet 3261b facing the second side 3252 as the S pole as an example for illustration, which does not constitute a limitation on this application.

[0096] In some embodiments, referring to FIG9, which is a perspective view of the drive assembly 324 in the drive motor 32 shown in FIG7, the magnet assembly 326 further includes a second set of magnets 3262. The arrangement direction of the first set of magnets 3261 and the second set of magnets 3262 is a first direction F1. The first set of magnets 3261 and the second set of magnets 3262 are arranged in a rectangular plate shape, and the arrangement direction of the first set of magnets 3261 and the second set of magnets 3262 refers to the extension direction of the line connecting the midpoints of the two plate shapes in the width direction.

[0097] Specifically, the second set of magnets 3262 includes a third magnet 3262a and a fourth magnet 3262b arranged axially along the lens mounting hole. The first magnet 3261a and the third magnet 3262a are arranged opposite to each other, and the second magnet 3261b and the fourth magnet 3262b are arranged opposite to each other. A first side 3251 is located between the first magnet 3261a and the third magnet 3262a, and a second side 3252 is located between the second magnet 3261b and the fourth magnet 3262b. For example, please refer to FIG10, which is a magnetic pole arrangement diagram of the magnet assembly 326 in the drive assembly 324 shown in FIG9. The end of the first magnet 3261a facing the first side 3251 is the N pole, the end of the second magnet 3261b facing the second side 3252 is the S pole, the end of the third magnet 3262a facing the first side 3251 is the S pole, and the end of the fourth magnet 3262b facing the second side 3252 is the N pole.

[0098] This increases the magnetic field strength, enabling the drive component 324 to provide greater driving force, which in turn drives the optical lens 31 to move rapidly, thus enabling the camera module 30 to focus quickly.

[0099] The relative arrangement of the first magnet 3261a and the third magnet 3262a means that the projection of the side of the first magnet 3261a facing the third magnet 3262a in the direction perpendicular to the first direction F1 overlaps with the projection of the side of the third magnet 3262a facing the first magnet 3261a in the direction perpendicular to the first direction F1. Similarly, the relative arrangement of the second magnet 3261b and the fourth magnet 3262b means that the projection of the side of the second magnet 3261b facing the fourth magnet 3262b in the direction perpendicular to the first direction F1 overlaps with the projection of the side of the fourth magnet 3262b facing the second magnet 3261b in the direction perpendicular to the first direction F1.

[0100] Simultaneously, the polarity of the third magnet 3262a facing the first side 3251 is opposite to that of the first magnet 3261a facing the first side 3251, and the polarity of the fourth magnet 3262b facing the second side 3252 is opposite to that of the second magnet 3261b facing the second side 3252. Since the current directions of the first side 3251 and the second side 3252 within the coil assembly 325 are opposite, this arrangement ensures that the driving force generated by the first side 3251 and the second side 3252 is in the same direction, thereby increasing the driving force and driving the carrier 323 to move rapidly, achieving rapid focusing.

[0101] It is understood that the first set of magnets 3261 can be formed by combining the first magnet 3261a and the third magnet 3262a. In some other embodiments, the first magnet 3261a and the third magnet 3262a can also be an integral structure.

[0102] In some other embodiments, the coil assembly 325 may also be disposed on the carrier 323, and the magnet assembly 326 may be disposed on the base 322.

[0103] The following embodiments are further descriptions based on the fact that the coil assembly 325 is disposed on the base 322 and the magnet assembly 326 is disposed on the carrier 323. This should not be considered as a special limitation of this application.

[0104] In some embodiments, the polarity of the first magnet 3261a facing the first side 3251 is opposite to the polarity of the third magnet 3262a facing the first side 3251 and opposite to the polarity of the third magnet 3262a facing the first side 3251. The polarity of the second magnet 3261b facing the second side 3252 is opposite to the polarity of the second magnet 3261b facing the second side 3252 and opposite to the polarity of the fourth magnet 3262b facing the second side 3252 and opposite to the polarity of the fourth magnet 3262b facing the second side 3252. In this way, by setting the magnetism of the first magnet 3261a, the second magnet 3261b, the third magnet 3262a, and the fourth magnet 3262b, the magnetic field strength can be increased, enabling the drive assembly 324 to provide a larger driving force.

[0105] For example, please refer to Figure 11, which is an overall magnetic pole arrangement diagram of the magnet assembly 326 in the drive assembly 324 shown in Figure 9. The end of the first magnet 3261a facing the first side 3251 is the N pole, and the polarity of the first magnet 3261a away from the first side 3251 is the S pole. The end of the second magnet 3261b facing the second side 3252 is the S pole, and the end of the second magnet 3261b away from the second side 3252 is the N pole. The end of the third magnet 3262a facing the first side 3251 is the S pole, and the polarity of the third magnet 3262a away from the first side 3251 is the N pole. The end of the fourth magnet 3262b facing the second side 3252 is the N pole, and the end of the fourth magnet 3262b away from the second side 3252 is the S pole.

[0106] Based on the above, the first magnet 3261a, the second magnet 3261b, the third magnet 3262a, and the fourth magnet 3262b can be permanent magnets or electromagnets. This application uses the first magnet 3261a, the second magnet 3261b, the third magnet 3262a, and the fourth magnet 3262b as permanent magnets for illustrative purposes. The first magnet 3261a, the second magnet 3261b, the third magnet 3262a, and the fourth magnet 3262b include, but are not limited to, neodymium iron boron magnets, ferrite magnets, and cobalt magnets.

[0107] In other embodiments, the polarity of the first magnet 3261a facing the first side 3251 can be the same as the polarity of the first magnet 3261a away from the first side 3251, and the polarity of the third magnet 3262a facing the first side 3251 can be the same as the polarity of the third magnet 3262a away from the first side 3251. Similarly, the polarity of the second magnet 3261b facing the second side 3252 can be the same as the polarity of the second magnet 3261b away from the second side 3252, and the polarity of the fourth magnet 3262b facing the second side 3252 can be the same as the polarity of the fourth magnet 3262b away from the second side 3252.

[0108] Please refer to Figure 7. The arrangement direction between the drive assembly 324 and the lens mounting hole 3231 is the second direction F2, and the first direction F1 is perpendicular to the second direction F2. This arrangement allows the first set of magnets 3261 and the second set of magnets 3262 to occupy less space, making the structure of the drive assembly 324 more compact and facilitating the miniaturization of the camera module 30. In some other embodiments, the first direction F1 may not be perpendicular to the second direction F2. This application uses the example of the first direction F1 being perpendicular to the second direction F2, which should not be considered a specific limitation of this application.

[0109] Specifically, please refer to Figure 12, which is a perspective view of the coil assembly 325 in the drive assembly 324 shown in Figure 9. The coil assembly 325 also includes a substrate 3253, on which the coil 3255 is disposed. In this way, the substrate 3253 can provide a stable support structure for the coil 3255, effectively fixing the coil and preventing displacement or deformation of the coil 3255 during use, thereby improving the reliability of the drive assembly 324.

[0110] In some embodiments, continuing to refer to FIG12, the substrate 3253 includes a circuit board, which includes a metal portion, such as a metallized via, and at least a portion of the metal portion forms a coil 3255. By directly integrating the coil 3255 onto the metal portion of the circuit board, the thickness of the coil assembly 325 in the first direction F1 can be reduced, thereby increasing the integration density of the coil assembly 325, improving the compactness of the structure, and reducing the size of the drive motor 32. Furthermore, having at least a portion of the metal portion of the circuit board form the coil 3255 simplifies electrical connections, reduces additional wiring and connectors, thereby lowering the risk of failure and simplifying circuit design. In other embodiments, the coil 3255 may also be disposed on the surface of the circuit board.

[0111] Circuit board 3254 includes, but is not limited to, printed circuit board (PCB), flexible printed circuit (FPC), or a plate-like structure formed by braiding flexible materials and wires.

[0112] In some embodiments, please refer to FIG13, which is a cross-sectional view of the coil assembly shown in FIG12. The substrate 3253 includes a first circuit board 3254a and a second circuit board 3254b stacked together. The first circuit board 3254a includes a first metal portion, and the second circuit board 3254b includes a second metal portion. The first circuit board 3254a and the second circuit board 3254b may be connected by soldering. The coil 3255 includes a first coil 3255a and a second coil 3255b connected to each other. At least a portion of the first metal portion of the first circuit board 3254a forms the first coil 3255a, and at least a portion of the second metal portion of the second circuit board 3254b forms the second coil 3255b.

[0113] In this way, by connecting the first coil 3255a and the second coil 3255b, the effective area of ​​the coil 3255 can be increased, thereby increasing the magnetic flux, increasing the induced electromotive force caused by the change in magnetic field, and improving the driving force of the drive component 324.

[0114] It should be noted that the number of the first circuit board 3254a and the second circuit board 3254b in this embodiment is not limited, and can be selected as needed. That is, the number of the first circuit board 3254a can be m, and the number of the second circuit board 3254b can be n, where m and n are both integers greater than 0. Referring to Figure 13, Figure 13 illustrates an example where the substrate 3253 includes one first circuit board 3254a and one second circuit board 3254b.

[0115] In some embodiments, continuing to refer to FIG13, the drive assembly 324 further includes a magnetic sensor 3241, which is disposed on the first circuit board 3254a and is located in the area surrounded by the first coil 3255a.

[0116] This simplifies the assembly of the magnetic sensor 3241 and the structure of the camera assembly. Furthermore, positioning the magnetic sensor 3241 on the first circuit board 3254a allows for more accurate measurement of magnetic field changes, improving its sensitivity and response rate to external magnetic fields. Additionally, the magnetic sensor 3241's location within the area surrounded by the first coil 3255a reduces the influence of the external environment on the measurement results, improving measurement stability and reliability. In other embodiments, the magnetic sensor 3241 may be located on the second circuit board 3254b, within the area surrounded by the second coil 3255b.

[0117] The magnetic sensor 3241 can be a Hall sensor, or a tunnel magnetoresistance (TMR) sensor, magnetometer, magnetoresistive, magnetic diode, magnetic transistor, etc. This application uses the magnetic sensor 3241 as an example of a Hall sensor. Hall sensors are small in size, consume less power, and have high accuracy, thus improving the position detection accuracy of the carrier 323.

[0118] In some embodiments, continuing to refer to FIG13, the first circuit board 3254a is provided with a first groove 3242, and the magnetic sensor 3241 is disposed in the first groove 3242. This arrangement reduces the thickness of the coil assembly 325 in the first direction F1, improves the integration of the coil assembly 325, avoids interference with other components, enhances structural compactness, and reduces the size of the drive motor 32. In other embodiments, the second circuit board 3254b is provided with the first groove 3242, and the magnetic sensor 3241 is disposed in the first groove 3242.

[0119] In some embodiments, please refer to FIG14, which is a perspective view of the magnetic guide rail 327 and the base 322 in the drive motor 32 shown in FIG7. The drive motor 32 further includes the magnetic guide rail 327, which is disposed in the base 322. It should be noted that the magnetic guide rail 327 can be embedded in the base 322, or it can be disposed in the base 322 by means of adhesive bonding or other methods. This application describes the case where the magnetic guide rail 327 is embedded in the base 322 as an example.

[0120] A magnetic guide rail 327 extends axially along the lens mounting hole 3231, and engages with the first set of magnets 3261 in Figure 7. By engaging the magnetic guide rail 327 with the first set of magnets 3261, a stable attraction force is provided, allowing the carrier 323 to adhere to the base 322. Furthermore, the magnetic guide rail 327 provides a stable track for the movement of the carrier 323, facilitating more precise positioning and improving the focusing or adjustment accuracy of the optical lens. In some other embodiments, the magnetic guide rail 327 engages with the second set of magnets 3262 in Figure 7. In other embodiments, the magnetic guide rail 327 can be made large enough to engage simultaneously with both the first set of magnets 3261 and the second set of magnets 3262 in Figure 7.

[0121] Building upon the above, referring further to Figure 14, the magnetic guide rail 327 includes a first magnetic guide rail 327a and a second magnetic guide rail 327b. The first magnetic guide rail 327a is attracted to the first group of magnets 3261 in Figure 7, and the second magnetic guide rail 327b is attracted to the second group of magnets 3262 in Figure 7. This provides a stronger attraction force, making the attraction between the magnet assembly 326 and the magnetic guide rail 327 more stable.

[0122] In some embodiments, please refer to Figures 15 and 16. Figure 15 is a perspective view of the sliding shaft 328 and the base 322 in the drive motor 32 shown in Figure 7, and Figure 16 is a perspective view of the sliding shaft 328 and the carrier 323 in the drive motor 32 shown in Figure 7. The drive motor 32 further includes at least one sliding shaft 328, which is disposed in the base 322. The at least one sliding shaft 328 extends axially along the lens mounting hole 3231. The carrier 323 is provided with at least one sliding groove 3236, which extends axially along the lens mounting hole 3231. The at least one sliding shaft 328 is slidably accommodated within the at least one sliding groove 3236. In this way, the carrier 323 is movably connected to the base 322 through the sliding shaft 328, and the sliding friction resistance between the carrier 323 and the base 322 is relatively stable, allowing the carrier 323 to move more smoothly and reducing resistance and wear during the movement of the carrier 323. In addition, the slide shaft 328 can ensure that the carrier 323 moves on a predetermined path, making it easier for the carrier 323 to achieve high-precision positioning when performing focusing operations.

[0123] Based on the above, referring further to Figure 16, at least one sliding shaft 328 includes a first sliding shaft 328a and a second sliding shaft 328b. At least one sliding groove 3236 includes a first sliding groove 3236a and a second sliding groove 3236b. The first sliding shaft 328a is slidably accommodated within the first sliding groove 3236a, and the second sliding shaft 328b is slidably accommodated within the second sliding groove 3236b. In this way, the first sliding shaft 328a and the second sliding shaft 328b can provide better support for the carrier 323, making the carrier 323 more stable during movement and helping to avoid deviation and swaying. In addition, this arrangement can provide more precise guidance, helping to reduce the swaying of the carrier 323 during movement, thereby enhancing the positioning accuracy of the carrier 323.

[0124] It should be noted that the embodiments of this application do not limit the number of the first sliding shaft 328a, the second sliding shaft 328b, the first sliding groove 3236a, and the second sliding groove 3236b. The specific number can be selected as needed. That is, the number of first sliding shafts 328a can be *a*, the number of first sliding grooves 3236a can also be *a*, the number of second sliding shafts 328b can be *b*, and the number of second sliding grooves 3236b can also be *b*, where *a* and *b* are both integers greater than 0. Referring further to Figure 16, Figure 16 illustrates an example where there is only one first sliding shaft 328a, one second sliding shaft 328b, one first sliding groove 3236a, and one second sliding groove 3236b.

[0125] In some embodiments, please refer to Figures 16 and 17. Figure 17 is a perspective view of the carrier 323 in the drive motor 32 shown in Figure 16. The first slide groove 3236a and the second slide groove 3236b are spaced apart along the first direction F1, and the drive assembly 324 is located between the first slide groove 3236a and the second slide groove 3236b. In this way, the first slide groove 3236a, the second slide groove 3236b, and the drive assembly 324 are located on the same side of the lens mounting hole 3231, which makes the overall structure of the drive motor 32 more compact and reduces the size of the drive motor 32.

[0126] Referring again to Figure 17, the first groove 3236a and the second groove 3236b extend in a direction away from the lens mounting hole 3231 and penetrate the side wall of the carrier 323. This reduces the weight of the carrier 323 and facilitates the assembly of the carrier 323 with the base 322. The side wall of the carrier 323 refers to the side wall facing away from the lens mounting hole 3231.

[0127] In some embodiments, please refer to FIG18, which is a top view of the carrier 323 shown in FIG17. The first groove 3236a includes a first bottom surface 3237 and two side surfaces located on both sides of the first bottom surface 3237. The first bottom surface 3237 is a plane. The first sliding shaft 328 in FIG16 is in contact with the first bottom surface 3237. The distance between the two side surfaces of the first groove 3236a is greater than the diameter of the first sliding shaft 328. The second groove 3236b includes a second bottom surface 3238, which is a V-shaped surface. The second sliding shaft 328 in FIG16 is in contact with the two surfaces forming the second bottom surface 3238.

[0128] In this way, the first bottom surface 3237 of the first groove 3236a is a plane, allowing the carrier 323 to maintain a stable path during movement. The second bottom surface 3238 of the second groove 3236b is a V-shaped surface, which provides a better guiding effect. The second sliding shaft 328 contacts the two surfaces forming the second bottom surface 3238, providing more precise positioning for the carrier 323. In addition, since the distance between the two sides of the first groove 3236a is greater than the diameter of the first sliding shaft 328, this allows for a certain degree of flexibility in the assembly of the first groove 3236a and the first sliding shaft 328, improving the assembly error tolerance.

[0129] In some embodiments, please refer to FIG19, which is a front view of the carrier 323 shown in FIG17. The carrier 323 includes a mounting portion 3232 and a connecting portion 3233. A lens mounting hole 3231 is provided in the mounting portion 3232. The mounting portion 3232 and the connecting portion 3233 are arranged along the second direction F2.

[0130] Referring again to Figures 16 and 19, the connecting portion 3233 and the driving assembly 324 are located on the same side of the lens mounting hole 3231. A first sliding groove 3236a and a second sliding groove 3236b are provided on the connecting portion 3233. The height of the mounting portion 3232 along the axial direction of the lens mounting hole 3231 is a first height h1, and the height of the connecting portion 3233 along the axial direction of the lens mounting hole 3231 is a second height h2, where the first height h1 is less than the second height h2. This reduces the weight of the mounting portion 3232, thereby reducing the weight of the carrier 323. Furthermore, the stroke of the carrier 323 can be adjusted by setting the height of the connecting portion 3233. A larger height for the connecting portion 3233 also provides more space for the installation of the magnetic components, making the installation of the magnetic components more stable.

[0131] In some embodiments, continuing to refer to FIG19, the top of the connecting portion 3233 is connected to the mounting portion 3232 along the axial direction of the lens mounting hole 3231. This simplifies the structure of the carrier 323 and facilitates operation. The top of the connecting portion 3233 refers to the side of the optical lens 31 whose light-incident surface 31a is away from the light-exit surface 31b.

[0132] In some other embodiments, the middle portion of the connecting portion 3233 may also be connected to the mounting portion 3232. In some other embodiments, the bottom portion of the connecting portion 3233 may also be connected to the mounting portion 3232.

[0133] In some embodiments, referring further to Figures 17 and 19, the surface of the connecting portion 3233 facing away from the mounting portion 3232 is a first surface 3233a, and the surface of the connecting portion 3233 facing the mounting portion 3232 is a second surface 3233b. The second surface 3233b is provided with a third groove 3235 recessed into the first surface 3233a. That is, the side of the carrier 323 is the first surface 3233a of the connecting portion 3233, and the first surface 3233a is also provided with a first groove 3236a and a second groove 3236b.

[0134] This reduces the weight of the connecting part 3233, which helps control the overall weight of the carrier 323 and facilitates the driving component 324 to drive the carrier 323.

[0135] Based on the above, referring to Figures 17 and 19, the third groove 3235 penetrates the connecting portion 3233 along the first direction F1. This reduces the weight of the connecting portion 3233, which is beneficial for controlling the overall weight of the carrier 323. In some other embodiments, the third groove 3235 may not penetrate the connecting portion 3233 along the first direction F1.

[0136] In some embodiments, referring further to Figures 17 and 19, the carrier 323 is also provided with a second groove 3234. Along the first direction F1, the second groove 3234 is located between the first groove 3236a and the second groove 3236b, and the second groove 3234 penetrates the carrier 323 in a direction away from the lens mounting hole 3231. The drive assembly 324 is disposed in the second groove 3234. In this way, the volume occupied by the carrier 323 and the drive assembly 324 in the first direction F1 can be reduced, making the structure of the drive motor 32 more compact, thereby reducing the size of the drive motor 32.

[0137] It should be noted that the second groove 3234 can penetrate the side wall of the carrier 323 along the axial direction of the lens mounting hole 3231, or the second groove 3234 can be along the axial direction of the lens mounting hole 3231 without penetrating the side wall of the carrier 323. Here, the side wall of the carrier 323 refers to the side wall away from the lens mounting hole 3231, that is, the first side surface 3233a.

[0138] By way of example, this application illustrates that the second groove 3234 can penetrate the side wall of the carrier 323 along the axial direction of the lens mounting hole 3231. This can also reduce the weight of the carrier 323.

[0139] In some embodiments, the drive motor 32 further includes a connector 321. Specifically, referring to Figures 16 and 17, the connector 321 is disposed in the second groove 3234. The first set of magnets 3261 and the second set of magnets 3262 are both disposed on the connector 321. This integrates the first set of magnets 3261 and the second set of magnets 3262 onto the connector 321, making it easier to install the first set of magnets 3261 and the second set of magnets 3262. Simultaneously, the connector 321 provides a larger installation area and also makes the connection between the first set of magnets 3261 and the second set of magnets 3262 and the carrier 323 more stable.

[0140] In some embodiments, referring further to Figures 17 and 19, the third groove 3235 communicates with the first groove 3236a, the second groove 3236b, and the second groove 3234. This can reduce the weight of the connecting portion 3233, which is beneficial for controlling the overall weight of the carrier 323.

[0141] In some other embodiments, the third groove 3235 may communicate with the first groove 3236a. In some other embodiments, the third groove 3235 may communicate with the second groove 3236b. In some other embodiments, the third groove 3235 may communicate with the second groove 3234.

[0142] In some embodiments, continuing to refer to FIG15, the base 322 includes a first fixing portion 3221 and a second fixing portion 3222, and a third fixing portion 3223, which are axially spaced along the lens mounting hole 3231. The first fixing portion 3221 and the second fixing portion 3222 are respectively located on opposite sides of the connecting portion 3233, and at least one sliding shaft 328 has both ends respectively disposed in the first fixing portion 3221 and the second fixing portion 3222. Exemplarily, the first fixing portion 3221 and the second fixing portion 3222 are provided with mounting holes, and at least one sliding shaft 328 has both ends respectively fixedly disposed in the mounting holes of the first fixing portion 3221 and the second fixing portion 3222. The third fixing portion 3223 connects between the first fixing portion 3221 and the second fixing portion 3222, and is located on the side of the connecting portion 3233 opposite to the mounting portion 3232 in FIG17.

[0143] This design simplifies the structure of the base 322, reduces its size, and makes the entire drive motor 32 more compact and smaller. Furthermore, this design also reduces the weight of the base 322, resulting in a lighter drive motor and consequently a lighter camera module 30.

[0144] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0145] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A drive motor, characterized in that, include: seat body; The carrier is provided with a lens mounting hole; A drive assembly is located on one side of the lens mounting hole, and the lens mounting hole and the drive assembly are arranged radially along the lens mounting hole; the drive assembly is connected between the carrier and the base, and the drive assembly is used to drive the carrier to move axially relative to the base along the lens mounting hole.

2. The drive motor according to claim 1, characterized in that, The driving component includes: A coil assembly is disposed on the base; the coil assembly includes a coil having a first side and a second side spaced apart along the axial direction of the lens mounting hole; A magnet assembly is disposed on the carrier; the magnet assembly includes a first group of magnets, the first group of magnets including a first magnet and a second magnet disposed along the axial direction of the lens mounting hole, the first magnet being opposite to the first side, the second magnet being opposite to the second side, and the polarity of the end of the first magnet facing the first side being opposite to the polarity of the second magnet facing the second side.

3. The drive motor according to claim 2, characterized in that, The magnet assembly also includes a second set of magnets; The second set of magnets includes a third magnet and a fourth magnet arranged along the axial direction of the lens mounting hole; The first magnet and the third magnet are arranged opposite to each other, the second magnet and the fourth magnet are arranged opposite to each other, the first side is located between the first magnet and the third magnet, and the second side is located between the second magnet and the fourth magnet; The polarity of the third magnet facing the first side is opposite to that of the first magnet facing the first side, and the polarity of the fourth magnet facing the second side is opposite to that of the second magnet facing the second side.

4. The drive motor according to claim 3, characterized in that, The polarity of the first magnet facing the first side is opposite to the polarity of the first magnet away from the first side, and the polarity of the third magnet facing the first side is opposite to the polarity of the third magnet away from the first side. The polarity of the second magnet facing the second side is opposite to the polarity of the second magnet away from the second side, and the polarity of the fourth magnet facing the second side is opposite to the polarity of the fourth magnet away from the second side.

5. The drive motor according to claim 3 or 4, characterized in that, The arrangement direction of the first group of magnets and the second group of magnets is the first direction; The alignment direction between the drive assembly and the lens mounting hole is the second direction; the first direction is perpendicular to the second direction.

6. The drive motor according to claim 2, characterized in that, The coil assembly also includes: A substrate, on which the coil is disposed.

7. The drive motor according to claim 6, characterized in that, The substrate includes: A circuit board, the circuit board including a metal portion, at least a portion of the metal portion forming the coil.

8. The drive motor according to claim 6 or 7, characterized in that, The substrate includes a first circuit board and a second circuit board stacked together; the first circuit board includes a first metal portion, and the second circuit board includes a second metal portion. The coil includes a first coil and a second coil connected to each other; at least a portion of the metal portion of the first circuit board forms the first coil, and at least a portion of the metal portion of the second circuit board forms the second coil.

9. The drive motor according to claim 8, characterized in that, The driving component also includes: A magnetic sensor is disposed on the first circuit board or the second circuit board, and the magnetic sensor is located in the area surrounded by the first coil and / or the second coil.

10. The drive motor according to claim 9, characterized in that, At least one of the first circuit board and the second circuit board is provided with a first groove, and the magnetic sensor is disposed in the first groove.

11. The drive motor according to any one of claims 3-10, characterized in that, The drive motor also includes: A magnetic guide rail is disposed on the base body and extends axially along the lens mounting hole; the magnetic guide rail is attracted to the first set of magnets, and / or the magnetic guide rail is attracted to the second set of magnets.

12. The drive motor according to claim 11, characterized in that, The magnetic guide rail includes: The first magnetic rail and the first set of magnets are attracted to each other. The second magnetic rail and the second set of magnets are attracted together.

13. The drive motor according to any one of claims 1-12, characterized in that, Also includes: At least one sliding shaft is disposed on the base body and extends axially along the lens mounting hole; The carrier is provided with at least one groove, which extends axially along the lens mounting hole; the at least one sliding shaft is slidably accommodated within the at least one groove.

14. The drive motor according to claim 13, characterized in that, The at least one sliding shaft includes a first sliding shaft and a second sliding shaft; the at least one sliding groove includes a first sliding groove and a second sliding groove; The first sliding shaft is slidably accommodated in the first sliding groove, and the second sliding shaft is slidably accommodated in the second sliding groove.

15. The drive motor according to claim 14, characterized in that, The first slide and the second slide are spaced apart along the first direction, and the drive component is located between the first slide and the second slide.

16. The drive motor according to claim 15, characterized in that, The first groove and the second groove extend in a direction away from the lens mounting hole and penetrate the side wall of the carrier.

17. The drive motor according to claim 16, characterized in that, The first slide groove includes a first bottom surface and two side surfaces located on both sides of the first bottom surface. The first bottom surface is a plane, and the first sliding shaft contacts the first bottom surface. The distance between the two side surfaces of the first slide groove is greater than the diameter of the first sliding shaft. The second slide groove includes a second bottom surface, which is a V-shaped surface, and the second slide shaft contacts the two surfaces forming the second bottom surface.

18. The drive motor according to claim 14, characterized in that, The carrier includes: The mounting part, wherein the lens mounting hole is provided in the mounting part; A connecting portion, wherein the connecting portion and the driving assembly are disposed on the same side of the lens mounting hole, and the first sliding groove and the second sliding groove are disposed on the connecting portion; The height of the mounting portion along the axial direction of the lens mounting hole is a first height, and the height of the connecting portion along the axial direction of the lens mounting hole is a second height, wherein the first height is less than the second height.

19. The drive motor according to claim 18, characterized in that, Along the axial direction of the lens mounting hole, the top of the connecting part is connected to the mounting part.

20. The drive motor according to claim 14, characterized in that, The carrier is further provided with a second groove, which is located between the first groove and the second groove, and the second groove extends through the carrier in a direction away from the lens mounting hole; the driving component is disposed in the second groove.

21. The drive motor according to claim 20, characterized in that, Also includes: A connector is disposed in the second groove; both the first set of magnets and the second set of magnets are disposed in the connector.

22. The drive motor according to claim 21, characterized in that, The surface of the connecting part facing away from the mounting part is a first surface, and the surface of the connecting part facing the mounting part is a second surface. The second surface is provided with a third groove that is recessed into the first surface.

23. The drive motor according to claim 22, characterized in that, The third groove extends through the connecting portion along the first direction.

24. The drive motor according to claim 22, characterized in that, The third groove is connected to the first groove, the second groove, and the second groove.

25. The drive motor according to claim 18, characterized in that, The seat includes A first fixing part and a second fixing part are provided at an axial distance along the lens mounting hole. The first fixing part and the second fixing part are respectively located on opposite sides of the connecting part. The two ends of the at least one sliding shaft are respectively provided on the first fixing part and the second fixing part. The third fixing part is connected between the first fixing part and the second fixing part, and is located on the side of the connecting part opposite to the mounting part.

26. The drive motor according to claim 1, characterized in that... The driving component includes: A coil assembly is disposed on the carrier; the coil assembly includes a coil having a first side and a second side spaced apart along the axial direction of the lens mounting hole; A magnet assembly is disposed on the base; the magnet assembly includes a first group of magnets, the first group of magnets including a first magnet and a second magnet disposed along the axial direction of the lens mounting hole, the first magnet being opposite to the first side, the second magnet being opposite to the second side, and the polarity of the end of the first magnet facing the first side being opposite to the polarity of the second magnet facing the second side.

27. The drive motor according to claim 2, characterized in that, The magnet assembly also includes a second set of magnets; The second set of magnets includes a third magnet and a fourth magnet arranged along the axial direction of the lens mounting hole; The first magnet and the third magnet are arranged opposite to each other, the second magnet and the fourth magnet are arranged opposite to each other, the first side is located between the first magnet and the third magnet, and the second side is located between the second magnet and the fourth magnet; The polarity of the third magnet facing the first side is opposite to that of the first magnet facing the first side, and the polarity of the fourth magnet facing the second side is opposite to that of the second magnet facing the second side.

28. A camera module, characterized in that, include: Optical lens; A photosensitive device, wherein the photosensitive device is disposed on the light-emitting side of the optical lens; The drive motor according to any one of claims 1-27, wherein the optical lens is fixed in the lens mounting hole of the drive motor.

29. An electronic device, characterized in that, include: case; The camera module of claim 28, wherein the camera module is housed within the housing.

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