A camera driving motor, a camera module and an electronic device

Abstract

The utility model relates to a kind of camera drive motor, camera module and electronic equipment, camera drive motor includes shell, pedestal, magnet, carrier, upper spring piece and lower spring piece, the upper surface of the carrier is equipped with boss, the lateral surface of this boss is inwards to carrier center direction relative to carrier upper surface outer periphery, form stepped relief structure.The utility model provides a kind of camera drive motor, camera module and electronic equipment, its core is in optimization carrier boss structure to block colloid contact, to improve motion reliability;Specifically by increasing the distance of boss and magnet, directly to the physical root of sticking problem is intervened, it has positive significance to maintain the motion accuracy and yield stability of motor.

Description

Technical Field

[0001] This utility model relates to optical device driving technology, and more particularly to a camera drive motor, camera module and electronic device. Background Technology

[0002] In conventional camera drive motors, magnets are fixed to the inner side of the top wall of the housing using adhesive, while the protrusions on the upper surface of the carrier are usually flush with or extend outward from the outer edge of the carrier. This structure results in a relatively limited radial clearance between the inner surface of the magnet and the lateral surface of the protrusion. During assembly, the fixing adhesive coated on the side of the magnet is prone to migration due to capillary action or gravity, posing a risk of contact with the lateral surface of the protrusion. After the adhesive cures, it may form adhesions on the lateral surface of the protrusion, interfering with the free axial movement of the carrier. This adhesion effect may lead to increased drag on the carrier's movement, deviation of the movement trajectory, and even lens focusing inaccuracies. Although existing technologies have attempted to optimize the dispensing process or adhesive formulation to control adhesive overflow, the physical constraints within the confined space make it difficult to completely eliminate the potential risk of adhesive contact with the lateral surface of the protrusion. Utility Model Content

[0003] In view of this, the present invention provides a camera drive motor, a camera module and an electronic device, the core of which lies in optimizing the carrier boss structure to block contact with the colloid, thereby improving motion reliability.

[0004] The objective of this utility model is achieved through the following technical solution: A camera drive motor includes a housing, a base, a magnet, a carrier, an upper spring and a lower spring. The upper surface of the carrier is provided with a boss, and the lateral surface of the boss is recessed inward toward the center of the carrier relative to the outer periphery of the upper surface of the carrier to form a stepped avoidance structure.

[0005] This stepped clearance structure, through the inward recessed design of the boss towards the center of the carrier, creates a horizontal, inward step between the lateral surface of the boss and the original outer edge of the carrier. When the magnet is fixed to the top wall of the outer casing, this recessed structure creates a significantly increased accommodating space between the inner surface of the magnet and the lateral surface of the boss. The increased radial clearance reduces the likelihood of the adhesive coated on the side of the magnet contacting the lateral surface of the boss during assembly. Since the boss is a critical part of the spring connection, preventing adhesive adhesion helps prevent the adhesive from curing and restricting the free movement of the carrier, reducing increased carrier movement resistance or trajectory deviation caused by adhesive. This mechanical improvement, by increasing the distance between the boss and the magnet, directly addresses the physical root cause of the adhesive problem, which is of positive significance for maintaining the motor's motion accuracy and yield stability.

[0006] Preferably, the carrier is a cylindrical structure with a driving coil surrounding its outer wall, and the boss is located in the edge region of the upper surface of the carrier.

[0007] The boss's positioning on the edge of the carrier's upper surface places it at a critical location on the lateral migration path of the magnet and the colloid. This edge placement maximizes the radial clearance distance between the boss and the inner surface of the magnet, providing a longer migration buffer space for the colloid. This location maintains a reasonable distance from the drive coil, preventing interference from electromagnetic components to the clearance structure. The open layout of the edge area also facilitates observation of the colloid's condition during assembly, allowing for timely handling of any abnormal colloid spillage. The continuity between the boss and the carrier edge ensures that structural rigidity is not significantly weakened, providing a stable support foundation for the spring connection.

[0008] Preferably, the depth of the recess in the stepped structure is less than the thickness of the carrier sidewall.

[0009] The proportional control of the recess depth balances the requirements of structural strength and clearance functionality. When the recess depth is greater than zero, an effective horizontal clearance distance can be formed; limiting the depth ratio prevents excessive weakening of the carrier edges. Shallower recesses help maintain the bending stiffness of the boss base and prevent microcracks from forming during spring welding or carrier movement. Deeper recesses provide more sufficient inward space, enhancing the blocking effect on colloid migration. This proportional design retains sufficient material cross-section to ensure the thermal conductivity of the carrier edge area, which is beneficial for the conduction and dissipation of heat generated during the operation of the drive coil. Depth control also ensures that the upper surface of the carrier retains a continuous support surface, avoiding unevenness of the lens mounting platform due to localized recesses. This parameter range is compatible with the molding capabilities of conventional injection molding processes, reducing manufacturing costs.

[0010] Preferably, the top surface of the boss is provided with a planar connecting area for connecting the upper spring piece.

[0011] The planar connection area provides a full-contact welding platform for the spring contact. The flat surface increases the effective bonding area of ​​the weld joint, improving the connection's resistance to high-frequency vibration fatigue. The planar structure ensures more uniform heat distribution during welding, reducing metallurgical defects caused by localized overheating. Compared to curved surface connections, planar contact transmits the spring contact force more stably, reducing torque fluctuations during carrier movement. This design facilitates visual positioning by automated equipment, improving welding position accuracy and consistency. The planar area also provides a clear post-weld inspection reference surface, aiding in quality control. The full-fit contact surface suppresses abnormal noises generated during vibration energy transfer, improving the user experience. The planar platform is highly adaptable to spring contact materials, compatible with the welding process requirements of different alloy materials.

[0012] Preferably, the contour shape of the planar connection area matches the inner end contour of the upper spring piece.

[0013] Contour matching design achieves geometrically conformal connection. When the inner contour of the spring coincides with the boundary of the connection area, fretting friction caused by assembly gaps is eliminated, reducing the generation of wear particles during long-term use. The matched contour optimizes the stress transmission path, preventing stress concentration at the spring edges. During assembly, this design provides self-positioning guidance, reducing positional deviations during manual operation. Conformal contact maximizes the effective connection area, improving connection rigidity within a limited space and contributing to improved high-frequency response characteristics of the motor. Contour matching also enhances the sealing of the weld interface, reducing the risk of electrochemical corrosion caused by moisture intrusion. For miniaturized motors, this design makes better use of space, aligning with the trend towards compact design.

[0014] Preferably, the minimum distance between the inner surface of the magnet and the lateral surface of the boss is greater than the minimum distance between the inner surface of the magnet and the outer surface of the carrier sidewall.

[0015] This minimum distance difference constitutes the core mechanism of radial avoidance. Increasing the minimum distance at the boss position directly creates a physical isolation zone between the magnet's adhesive coating area and the boss. Even if a small amount of adhesive seeps out from the side of the magnet, the increased radial space makes it more difficult for the adhesive to migrate to the side surface of the boss, reducing the probability of contact. The increased distance also weakens the capillary pull on the adhesive, suppressing the tendency of the adhesive to creep along the inner surface of the magnet towards the boss. This design compensates for adhesive volume fluctuations in automated assembly, lowering the technological threshold for precision dispensing.

[0016] Preferably, the inner end of the lower spring is connected to the periphery of the bottom of the carrier, and the outer end is connected to the inner edge of the base.

[0017] The bottom perimeter connection design optimizes mechanical stability. Placing the connection point at the bottom perimeter of the carrier increases the support diameter, enhancing the carrier's anti-tipping ability. The inner edge of the connection base shortens the lever arm length, improving system rigidity. This layout forms a spatially symmetrical constraint system: the upper spring plate dominates motion transmission, while the lower spring plate provides attitude stability, collaboratively suppressing non-axial displacement of the carrier. The bottom connection point is located away from the lens optical path, avoiding mechanical interference with imaging. The perimeter distribution promotes uniform airflow diffusion, reducing eddy noise during high-speed movement. This design has low sensitivity to carrier manufacturing errors, improving product yield.

[0018] Preferably, a camera module includes a camera drive motor as described above, and a lens mounted inside the carrier cavity.

[0019] This camera module inherits the structural advantages of the motor. Direct integration of the lens and carrier allows the improved imaging performance of the obstacle avoidance design to be fully realized: avoiding motion inaccuracies caused by adhesives helps improve autofocus positioning accuracy; optimized mechanical stability reduces micro-vibrations during exposure, improving image sharpness. Modular integration enables synergistic optimization between the optical system and the mechanical obstacle avoidance structure, especially suitable for the stringent image stabilization requirements of high-pixel sensors. Improved motor reliability indirectly extends the lifespan of the camera module, reducing maintenance needs of the terminal device. The compact design aligns with the trend towards thinner mobile devices, providing greater design freedom for multi-camera module layouts.

[0020] Preferably, an electronic device includes a camera module as described above.

[0021] Electronic devices, by integrating a camera module with a stepped clearance structure, achieve systemic advantages at the end-application level: Based on the expanded radial gap between the magnet and the boss formed by the stepped clearance structure created by the inward inward movement of the carrier boss towards the carrier center, combined with the direct drive relationship between the lens installed within the carrier cavity and the carrier, firstly, the motion reliability of autofocus is improved—the unexpected resistance caused by adhesive adhesion during axial movement of the carrier is reduced, which helps improve the linearity and reset accuracy of the lens's focusing response. This is significant for maintaining imaging stability in dynamic shooting scenarios (such as motion recording or fast-focusing snapshots). Secondly, the symmetrical constraint system formed by the layout of the upper and lower springs and the welding connection that matches the contour of the planar connection area with the inner contour of the upper spring, in conjunction with the stepped clearance structure, reduces carrier sway, enabling the camera module to suppress high-frequency vibration interference even in the confined space of the electronic device, thus improving image clarity in low-light long exposure or video stabilization scenarios. Thirdly, the stepped... The stepped clearance structure's tolerance for dispensing process fluctuations reduces the difficulty of adhesive control during module assembly, indirectly improving the consistency of electronic device mass production. Simultaneously, the increased minimum radial distance between the inner surface of the magnet and the lateral surface of the boss weakens capillary effects, reducing the risk of adhesive creep even in environments with varying temperature and humidity, thus helping to extend the lifespan of the camera module. Fourth, the collaborative design of the carrier edge boss and the stepped clearance structure optimizes the module's axial height, providing more flexible industrial design space for electronic devices, especially adapting to the thickness constraints of front-facing modules in full-screen terminals or rear-facing modules in ultra-thin models. Finally, the modular integration mode of the camera module, including the camera drive motor and the lens installed in the carrier cavity, allows electronic device manufacturers to skip the motor-lens secondary calibration step, simplifying the overall assembly process and reducing production costs. Terminal products containing the aforementioned camera modules exhibit more stable imaging performance and a lower failure return rate at the user end due to the synergistic effects of these technologies.

[0022] The advantages of this utility model compared to the prior art are: This utility model achieves the following significant improvements at the mechanical level through the innovative design of a stepped avoidance structure: 1. Physical isolation of the colloidal migration path: The inward-curving design of the lateral surface of the boss towards the center of the carrier creates a horizontally inward stepped structure between the inner surface of the magnet and the boss. This step directly expands the radial accommodation space between them, equivalent to setting up a physical isolation band on the potential migration path of the colloidal material. The increased gap reduces the possibility of the colloidal material contacting the lateral surface of the boss, thereby reducing the obstruction of carrier movement caused by colloidal adhesion.

[0023] 2. Maintaining freedom of motion: By blocking the adhesion of the colloid to the side surface of the boss, the curing colloid effectively avoids additional constraints on the axial movement of the carrier. When the carrier is electrically driven, it can more fully release its freedom of motion, which helps to improve the linear accuracy of the lens focusing stroke and reduce image blur caused by motion trajectory deviation.

[0024] 3. Compatibility with process fluctuations: The expanded radial space provides greater tolerance for minor fluctuations in the dispensing process. Even if there is a slight seepage of adhesive from the side of the magnet inward, the stepped clearance structure can still provide a buffer area, reducing the probability of adhesive contacting the critical surface of the boss and indirectly relaxing the assembly accuracy requirements.

[0025] 4. Coordinated optimization of structural reliability: While achieving the avoidance function, the continuous design of the boss edge area maintains the structural integrity of the carrier's upper surface. The support stiffness of the boss as the spring connection point is not significantly weakened, ensuring the stability of the spring force transmission and balancing the functions of colloidal isolation and mechanical load-bearing.

[0026] 5. Reduce the risk of motion misalignment: By directly intervening in the physical structure to target the common failure mode of colloidal adhesion, it helps to improve the motion consistency of the motor under complex working conditions such as long-term vibration and temperature cycling, which has a positive significance for improving the focusing stability of the camera module and the product yield. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a structural diagram of a camera drive motor according to an embodiment of the present invention.

[0029] Figure 2 This is a structural diagram of a camera drive motor according to an embodiment of the present invention.

[0030] Figure 3 This is a structural diagram of a camera drive motor according to an embodiment of the present invention.

[0031] Figure 4 This is a structural diagram of a camera drive motor according to an embodiment of the present invention.

[0032] Labeling explanation: 1. Outer shell, 2. Base, 3. Magnet, 4. Carrier, 41. Boss, 411. Stepped avoidance structure, 412. Planar connection area, 42. Drive coil, 5. Upper spring, 6. Lower spring. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0035] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of this application, it should be understood that the terms "upper," "lower," "left," "right," "vertical," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product of this application is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0037] The technical solutions in this application will now be described with reference to the accompanying drawings. Example 1

[0038] This embodiment provides a camera drive motor, including a housing 1, a base 2, a magnet 3, a carrier 4, an upper spring 5 and a lower spring 6. The carrier 4 is characterized in that a boss 41 is provided on the upper surface of the carrier 4. The lateral surface of the boss 41 is recessed inward toward the center of the carrier 4 relative to the outer periphery of the upper surface of the carrier 4, forming a stepped avoidance structure 411.

[0039] The stepped clearance structure 411, through the inward recessed design of the boss 41 towards the center of the carrier 4, forms a horizontal inward step between the lateral surface of the boss 41 and the original outer edge of the carrier 4. When the magnet 3 is fixed to the top wall of the outer casing 1, this inward recessed structure creates a significantly increased accommodating space between the inner side of the magnet 3 and the lateral surface of the boss 41. The increased radial clearance reduces the possibility of the adhesive coated on the side of the magnet 3 contacting the lateral surface of the boss 41 during assembly. Since the boss 41 is a key part of the spring connection, preventing adhesive adhesion helps prevent the adhesive from curing and restricting the free movement of the carrier 4, reducing the increase in movement resistance or trajectory deviation of the carrier 4 caused by adhesive. This mechanical improvement, by increasing the distance between the boss 41 and the magnet 3, directly intervenes in the physical root cause of the adhesive problem, which has a positive significance for maintaining the motion accuracy and yield stability of the motor.

[0040] In this embodiment, the carrier 4 is a cylindrical structure with a driving coil 42 surrounding its outer wall, and the boss 41 is located in the edge region of the upper surface of the carrier 4.

[0041] The protrusion 41 is positioned at the edge of the upper surface of the carrier 4, placing it at a critical location in the lateral migration path of the magnet 3 and the colloid. This edge placement maximizes the radial clearance distance between the protrusion 41 and the inner surface of the magnet 3, providing a longer migration buffer space for the colloid. This position maintains a reasonable distance from the drive coil 42, preventing interference from electromagnetic components to the clearance structure. The open layout of the edge region also facilitates observation of the colloid's condition during assembly, allowing for timely handling of any abnormal colloid spillage. The continuous design between the protrusion 41 and the edge of the carrier 4 ensures that the structural rigidity is not significantly weakened, providing a stable support foundation for the spring connection.

[0042] In this embodiment, the recess depth of the stepped structure 411 is less than the thickness of the carrier sidewall. For example, the recess depth is 0.1-0.3 mm, and the sidewall thickness is 0.5 mm.

[0043] The proportional control of the recess depth balances the requirements of structural strength and clearance functionality. When the recess depth is greater than zero, an effective horizontal clearance distance can be formed; limiting the depth ratio prevents excessive weakening of the edges of the carrier 4. Shallower recesses help maintain the bending stiffness of the boss 41 base, preventing microcracks from forming during spring welding or movement of the carrier 4. Deeper recesses provide more sufficient inward space, enhancing the blocking effect on colloid migration. This proportional design retains sufficient material cross-section to ensure the thermal conductivity of the edge area of ​​the carrier 4, which is beneficial for the conduction and dissipation of heat generated when the drive coil 42 is working. Depth control also ensures that the upper surface of the carrier 4 retains a continuous support surface, avoiding unevenness of the lens mounting platform due to localized recesses. This parameter range is compatible with the molding capabilities of conventional injection molding processes, reducing manufacturing costs.

[0044] In this embodiment, the top surface of the boss 41 is provided with a planar connection area 412 for connecting the upper spring piece 5.

[0045] The planar connection area 412 provides a full-contact welding platform for the spring sheet. The flat surface increases the effective bonding area of ​​the weld joint, improving the connection's resistance to high-frequency vibration fatigue. The planar structure ensures more uniform heat distribution during welding, reducing metallurgical defects caused by localized overheating. Compared to curved surface connections, planar contact transmits the spring sheet force more stably, reducing torque fluctuations during carrier 4 movement. This design facilitates visual positioning by automated equipment, improving welding position accuracy and consistency. The planar area also provides a clear post-weld inspection reference surface, aiding in quality control. The full-fit contact surface suppresses abnormal noises generated during vibration energy transfer, improving user experience. The planar platform is highly adaptable to spring sheet materials, compatible with the welding process requirements of different alloy materials.

[0046] In this embodiment, the contour shape of the planar connection area 412 matches the inner end contour of the upper spring piece 5.

[0047] Contour matching design achieves geometrically conformal connection. When the inner contour of the spring coincides with the boundary of the connection area, fretting friction caused by assembly gaps is eliminated, reducing the generation of wear particles during long-term use. The matched contour optimizes the stress transmission path, preventing stress concentration at the spring edges. During assembly, this design provides self-positioning guidance, reducing positional deviations during manual operation. Conformal contact maximizes the effective connection area, improving connection rigidity within a limited space and contributing to improved high-frequency response characteristics of the motor. Contour matching also enhances the sealing of the weld interface, reducing the risk of electrochemical corrosion caused by moisture intrusion. For miniaturized motors, this design makes better use of space, aligning with the trend towards compact design.

[0048] In this embodiment, the minimum distance between the inner side surface of the magnet 3 and the lateral surface of the boss 41 is greater than the minimum distance between the inner side surface of the magnet 3 and the outer surface of the sidewall of the carrier 4.

[0049] This minimum distance difference constitutes the core mechanism of radial avoidance. Increasing the minimum distance at the boss 41 directly creates a physical isolation zone between the adhesive-coated area of ​​the magnet 3 and the boss 41. Even if there is a slight seepage of adhesive from the side of the magnet 3, the increased radial space makes it more difficult for the adhesive to migrate to the lateral surface of the boss 41, reducing the probability of contact. The increased distance also weakens the capillary pull on the adhesive, suppressing the tendency of the adhesive to creep along the inner surface of the magnet 3 towards the boss 41. This design compensates for adhesive volume fluctuations in automated assembly, lowering the process threshold for precision dispensing.

[0050] In this embodiment, the inner end of the lower spring 6 is connected to the bottom periphery of the carrier 4, and the outer end is connected to the inner edge of the base 2.

[0051] The bottom perimeter connection design optimizes mechanical stability. Positioning the connection point at the bottom perimeter of the carrier 4 increases the support diameter, enhancing the carrier 4's resistance to tipping over. The inner edge of the connecting base 2 shortens the lever arm length, improving system rigidity. This layout forms a spatially symmetrical constraint system: the upper spring plate 5 primarily transmits motion, while the lower spring plate 6 provides attitude stability, collaboratively suppressing non-axial displacement of the carrier 4. The bottom connection point is located away from the lens optical path, avoiding mechanical interference with imaging. The perimeter distribution promotes uniform airflow diffusion, reducing eddy noise during high-speed movement. This design has lower sensitivity to manufacturing errors in the carrier 4, improving product yield. Example 2

[0052] This embodiment provides a camera module, including a camera drive motor as described in Embodiment 1 and a lens installed in the inner cavity of a carrier 4. The lens is fixed in the inner cavity of the carrier 4 by mechanical snap-fit ​​or threaded engagement, and its optical axis is coaxial with the axial movement direction of the carrier 4.

[0053] The camera module achieves synergistic optimization of lens motion performance by inheriting the stepped avoidance structure 411 from the drive motor. Improved motion accuracy: The inward-curving design of the lateral surface of the boss 41 reduces the risk of contact between the magnet 3 and the adhesive, helping to reduce unexpected resistance during the movement of the carrier 4. When the lens performs autofocus movement driven by the carrier 4, it exhibits smoother axial displacement characteristics, which is of positive significance for improving focus positioning accuracy.

[0054] Enhanced imaging stability: Avoiding trajectory shift of carrier 4 caused by colloidal adhesion, the symmetrical constraint system formed by the upper spring 5 and lower spring 6 reduces image blurring caused by mechanical vibration during exposure. The lens maintains higher attitude stability during high-speed focusing, contributing to improved image quality in low-light environments or long-exposure shooting scenarios.

[0055] Structural compatibility optimization: The compact design of the motor controls the overall thickness of the camera module, facilitating integration into space-constrained mobile devices. The continuous support structure on the upper surface of carrier 4 provides a flat reference for the lens mounting platform, preventing local deformation from affecting the coaxiality of optical components. This modular design is highly adaptable to device layouts with multiple cameras.

[0056] During the camera module assembly process, the open edge area layout of the motor facilitates observation of the coaxial alignment status of the lens and the carrier. The multiple clearance spaces between the magnet 3 and the boss 41, namely the synergistic effect of radial clearance and vertical distance difference, can reduce the difficulty of colloid control during the assembly process and improve the consistency of production line yield. Example 3

[0057] This embodiment provides an electronic device that integrates the camera module described in Embodiment 2. The electronic device includes, but is not limited to, smartphones, tablets, action cameras, or security monitoring equipment, and its housing has a reserved optical window to match the lens optical path of the camera module.

[0058] Electronic devices, by employing improved camera modules, demonstrate the following advantages at the application level: Improved imaging reliability: Based on the stepped avoidance structure 411 of the motor carrier 4, which physically isolates the colloid migration path, the camera module can still maintain relatively stable autofocus performance under equipment temperature cycling conditions (such as -10℃ to 60℃ environment), reducing the probability of focus failure caused by colloid adhesion.

[0059] Reduced equipment maintenance needs: The long-term stability of motor motion accuracy helps to slow down the performance degradation of the camera module, reduce image quality problems caused by lens motion misalignment, and correspondingly reduce the equipment return rate for end users.

[0060] Industrial design flexibility: The thin profile of the camera module provides greater freedom in the design of electronic devices. The edge positioning of the boss 41 in the motor and the continuous design of the carrier 4 allow the camera module to adapt to curved layouts or narrow assembly spaces within the device, meeting the ongoing demand for thinner and lighter designs and higher screen-to-body ratios in consumer electronics products.

[0061] In the electronic device manufacturing process, the welding connection method of the camera module (such as the welding fixation of the upper spring 5 to the top surface of the boss 41) is compatible with surface mount technology (SMT), which facilitates automated assembly. The modular integration of the motor and lens pre-calibration can also simplify the overall equipment assembly process.

[0062] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A camera drive motor, comprising a housing (1), a base (2), a magnet (3), a carrier (4), an upper spring (5), and a lower spring (6), characterized in that, The upper surface of the carrier (4) is provided with a boss (41), and the lateral surface of the boss (41) is recessed inward toward the center of the carrier relative to the outer periphery of the upper surface of the carrier (4), forming a stepped avoidance structure (411).

2. The camera drive motor according to claim 1, characterized in that, The carrier (4) is a cylindrical structure with a drive coil (42) surrounding its outer wall, and the boss (41) is located in the edge area of ​​the upper surface of the carrier (4).

3. The camera drive motor according to any one of claims 1-2, characterized in that, The top surface of the boss (41) is provided with a planar connection area (412) for connecting the upper spring piece (5).

4. The camera drive motor according to claim 3, characterized in that, The outline shape of the planar connection area (412) matches the inner end outline of the upper spring piece (5).

5. The camera drive motor according to claim 1, characterized in that, The minimum distance between the inner side of the magnet (3) and the lateral surface of the boss (41) is greater than the minimum distance between the inner side of the magnet (3) and the outer surface of the sidewall of the carrier (4).

6. The camera drive motor according to claim 1, characterized in that, The inner end of the lower spring (6) is connected to the bottom periphery of the carrier (4), and the outer end is connected to the inner edge of the base (2).

7. A camera module, characterized in that, It includes a camera drive motor as described in any one of claims 1-6, and a lens mounted in the cavity of the carrier (4).

8. An electronic device, characterized in that, Includes the camera module as described in claim 7.

Images