Lens motor, camera module and terminal device

Abstract

The application provides a lens motor, a camera module and a terminal device. The lens motor comprises a shell, a lens mount and a magnetic attraction assembly. The lens mount is slidable relative to the shell along the optical axis direction of a first lens group. The magnetic attraction assembly comprises a magnet group and a magnetic attraction group. The magnet group is fixedly arranged on the lens mount. The magnetic attraction group is fixedly arranged on the shell at a position corresponding to the magnet group. The magnetic attraction group comprises a first magnetic attraction piece. The first magnetic attraction piece is provided with a hole. When the hole is configured as a through hole, the magnetic attraction group comprises a second magnetic attraction piece. Alternatively, the hole is configured as a blind hole. In the application, the structure of the first magnetic attraction piece in the lens motor is improved. In the focusing process, the magnetic attraction force between the shell and the lens mount is increased. The stability of the movement of the lens mount is enhanced. In addition, the magnetic attraction restoring force in the optical axis direction is reduced. The resistance of the lens mount during movement is reduced. The system power consumption is reduced. The overall performance of the lens motor is improved.

Description

Technical Field

[0001] This application relates to the field of terminal equipment, and in particular to a lens motor, a camera module, and a terminal device. Background Technology

[0002] In camera modules of terminal devices (such as smartphones, tablets, and professional camera equipment), the lens motor is the core actuator that enables the autofocus (AF) function. The basic principle of the lens motor is to use the Lorentz force exerted by the energized coil in the magnetic field generated by the permanent magnet to drive the lens mount, which carries the lens or lens group, to move relative to the housing in a specific direction.

[0003] To ensure the precision and stability of the lens mount's movement, the lens motor typically includes a guide rail or similar structure to guide the lens mount along a preset path and prevent deviation during movement. To further enhance constraint and improve the stability of the lens mount's movement under dynamic conditions such as high-speed focusing, a magnetic attraction structure is often incorporated into the design. The magnetic components in this structure generate a magnetic force between themselves and the magnet assembly, which holds the lens mount more tightly within the motion guide rail, effectively suppressing unwanted vibrations in the degrees of freedom.

[0004] However, during autofocus, while this magnetic structure provides stability to the lens mount's movement, it also introduces a magnetic restoring force along the optical axis. This restoring force manifests as a force generated between the magnetic components and the magnetic assembly as the lens mount moves away from its initial equilibrium position (typically corresponding to the zero point of movement) relative to the magnetic assembly. The magnitude of this force varies non-linearly with displacement. During focusing, when the direction of the restoring force is opposite to the movement direction of the lens mount, it hinders the lens mount's movement. The coil must apply an additional Lorentz force to counteract the restoring force at that displacement point, thus increasing the driving force required by the lens motor during focusing and making system power consumption control more difficult.

[0005] Therefore, how to effectively increase the magnetic attraction force during focusing to enhance the stability of the lens mount while reducing the magnetic restoring force in the optical axis direction has become a key technical challenge for improving the performance of the lens motor. Utility Model Content

[0006] This application provides a lens motor, a camera module, and a terminal device. During the focusing process, the magnetic attraction between the housing and the lens mount is increased, thereby enhancing the stability of the lens mount's movement. Furthermore, the magnetic restoring force in the optical axis direction is reduced, thereby reducing the resistance encountered by the lens mount during movement, lowering system power consumption, and improving the overall performance of the lens motor.

[0007] A first aspect of this application provides a lens motor, including: a housing, a lens mount, and a magnetic suction assembly. The housing forms a receiving space. The lens mount has a mounting hole for mounting a first lens group. The lens mount is disposed within the receiving space of the housing and is slidably connected to the housing along a first direction, so that the lens mount can slide relative to the housing between a first moving position and a second moving position; the first direction is the optical axis direction of the first lens group.

[0008] A magnetic suction assembly is disposed between the lens mount and the corresponding sidewall of the housing, and includes a magnet assembly and a magnetic suction assembly. The magnet assembly includes at least one magnet and is fixedly disposed on the lens mount. The magnetic suction assembly is fixedly disposed on the housing at the position corresponding to the magnet assembly. The magnetic suction assembly includes a first magnetic suction member, which has a first outer surface and a second outer surface that are disposed opposite to each other along the thickness direction. The first outer surface of the first magnetic suction member is disposed opposite to the magnet assembly in a second direction. The first magnetic suction member has a hole, and the inner wall surface of the hole is spaced apart from the outer periphery of the first magnetic suction member. The second direction is perpendicular to the first direction, and the thickness direction of the first magnetic suction member is parallel to the second direction.

[0009] Furthermore, the hole is configured as a through hole extending from the first outer surface to the second outer surface. The magnetic assembly also includes a second magnetic member. In the second direction, the second magnetic member is disposed opposite to the first magnetic member and opposite to the magnet assembly. Both the first magnetic member and the magnet assembly, and the second magnetic member and the magnet assembly, have magnetic attraction forces in the second direction, so that the corresponding sidewalls of the lens mount and the housing are attracted to each other in the second direction. Moreover, the magnetic restoring forces of the first magnetic member and the second magnetic member acting on the magnet assembly in the first direction are opposite in direction.

[0010] Alternatively, the hole is configured as a blind hole recessed from one of the first and second outer surfaces toward the other, with the first magnetic member having a magnetic attraction in a second direction with the magnet assembly, so that the corresponding sidewalls of the lens mount and the housing are attracted to each other in the second direction.

[0011] The lens motor provided in this application embodiment has a lens mount for mounting the first lens group of a lens, and can move between a first moving position and a second moving position within the accommodating space of the housing along a first direction (i.e., the optical axis direction of the first lens group), thereby achieving a focusing function. Further, by fixing the magnet group and magnetic suction group of the magnetic suction assembly to two opposing sidewalls between the lens mount and the housing respectively—that is, fixing the magnet group to one sidewall of the lens mount and the magnetic suction group to one sidewall of the housing, with the sidewall of the housing opposite to the sidewall in the lens mount where the magnet group is located—and by arranging the magnet group and magnetic suction group opposite to each other in a second direction (perpendicular to the optical axis direction of the first lens group), a magnetic attraction force exists between the magnet group and the magnetic suction group in the second direction. This causes the two opposing sidewalls between the lens mount and the housing to attract each other, better confining the lens mount within the corresponding movement track of the housing, effectively suppressing unwanted degree-of-freedom vibrations, and thus improving the stability of the lens mount's movement in the first direction during focusing, contributing to improved focusing performance.

[0012] Furthermore, in one implementation, the magnetic assemblies include a first magnetic member and a second magnetic member disposed opposite to each other along a second direction. The first magnetic member has a through hole extending along its thickness direction (i.e., the second direction). In this case, the force exerted by the first magnetic member on the magnet assembly includes a magnetic attraction force in the second direction and a magnetic restoring force in the first direction; similarly, the force exerted by the second magnetic member on the magnet assembly includes a magnetic attraction force in the second direction and a magnetic restoring force in the first direction. The magnetic attraction forces generated by the two magnetic members in the second direction are in the same direction and superimposed on each other. That is, the magnetic attraction force exerted by this magnetic assemblies on the magnet assembly in the second direction is increased compared to the magnetic attraction force generated by a single solid magnetic member. This magnetic attraction force better confines the lens mount within the corresponding movement track of the housing, improving the stability of the lens mount's movement in the first direction during focusing. In the first direction, the magnetic restoring forces generated by the first and second magnetic attractors are opposite in direction and cancel each other out, reducing the resultant force on the magnet assembly in the first direction. That is, the magnetic restoring force exerted by the magnetic attractor assembly on the magnet assembly in the first direction is smaller than the magnetic restoring force generated by a single solid magnetic attractor. This reduces the magnetic restoring force on the lens mount during movement. When the direction of the magnetic restoring force is opposite to the direction of movement of the lens mount, the resistance on the lens mount is reduced, thereby reducing the driving force required during focusing and lowering the driving power consumption.

[0013] In another implementation, the magnetic assemblies consist only of a first magnetic element, which has a blind hole. This blind hole design allows the first magnetic element to maintain a large magnetic force acting on the magnet assembly in the second direction. This magnetic force better confines the lens mount within the corresponding movement track of the housing, ensuring the stability of the lens mount's movement in the first direction during autofocus. Simultaneously, the magnetic restoring force exerted by the first magnetic element on the magnet assembly in the first direction is small. When the direction of the magnetic restoring force is opposite to the movement direction of the lens mount, the resistance experienced by the lens mount is reduced, thereby lowering the driving force required during focusing and consequently reducing driving power consumption.

[0014] Therefore, the lens motor provided in this application embodiment can reduce the driving power consumption generated during the focusing process, enhance the motion stability of the lens mount, and thus improve the overall performance of the lens motor.

[0015] In one possible implementation, the height of the first magnetic element in the first direction is H, and the height of the hole in the first direction is h, where H and h satisfy: 1 / 4 ≤ h / H ≤ 3 / 5. That is, the height ratio of the hole to the first magnetic element is within the range of 1 / 4 to 3 / 5. The outer edge of the first outer surface forms a first region with an area of ​​S1, and the area of ​​the first end of the hole is S2. The first end of the hole is the end of the hole closest to the first outer surface along its depth direction, and S1 and S2 satisfy: 65% ≤ (S1-S2) / S1 ≤ 95%. Under the condition that the hole satisfies the above height ratio and area ratio, the magnetic restoring force applied by the magnetic accumulator to the magnet assembly can be further reduced, thereby better meeting the low power consumption requirements of the lens motor during focusing.

[0016] In one possible implementation, H and h satisfy: 1 / 3 ≤ h / H ≤ 1 / 2. S1 and S2 satisfy: 80% ≤ (S1-S2) / S1 ≤ 90%.

[0017] In one possible implementation, the inner wall of the hole includes an upper wall and a lower wall that are opposite to each other in a first direction, and the outer periphery of the first magnetic chuck includes an upper edge and a lower edge that are opposite to each other in the first direction. In the first direction, the upper edge of the first magnetic chuck, the upper wall of the hole, the lower wall of the hole, and the lower edge of the first magnetic chuck are sequentially spaced apart. The distance between the upper wall of the hole and the upper edge of the first magnetic chuck is d1, and the distance between the lower wall of the hole and the upper edge of the first magnetic chuck is d2, where d1 / H is greater than or equal to 1 / 5, and d2 / H is greater than or equal to 1 / 5. By controlling the ratio of the distance between the upper wall of the hole and the upper edge of the first magnetic chuck, and between the lower wall of the hole and the lower edge of the first magnetic chuck, to the height of the first magnetic chuck, the magnetic restoring force exerted by the magnetic chuck assembly on the magnet assembly is reduced, thereby reducing the energy consumed by the lens motor during focusing.

[0018] In one possible implementation, the upper and lower walls of the hole are parallel to each other. The upper wall of the hole is parallel to the upper edge of the first magnetic element. The lower wall of the hole is parallel to the lower edge of the first magnetic element.

[0019] In one possible implementation, the upper wall of the hole is set to a plane or a curved surface, and the lower wall of the hole is set to a plane or a curved surface.

[0020] By adopting the above scheme, the shape of the hole is regular, which makes the shape of the hole simpler and facilitates the processing and production of the first magnetic suction component.

[0021] In one possible implementation, the inner wall of the hole further includes a first side wall and a second side wall disposed opposite to each other in a third direction. The first side wall is connected between one end of the upper wall and one end of the lower wall, and the second side wall is connected between the other end of the upper wall and the other end of the lower wall; wherein the third direction is perpendicular to the first direction and the second direction, respectively.

[0022] The outer periphery of the first magnetic attractor also includes a first side edge and a second side edge disposed opposite to each other in the third direction. The first side edge is connected between one end of the upper edge and one end of the lower edge, and the second side edge is connected between the other end of the upper edge and the other end of the lower edge. In the third direction, the first side edge of the first magnetic attractor, the first side wall of the hole, the second side wall of the hole and the second side edge of the first magnetic attractor are disposed alternately in sequence.

[0023] The first sidewall of the hole is set parallel to the second sidewall; the first sidewall of the hole is set as a plane or a curved surface, and the second sidewall of the hole is set as a plane or a curved surface.

[0024] In the above scheme, the length direction of the first magnetic chuck is parallel to the third direction. The first and second sidewalls of the hole are the inner walls of the hole on both sides along the length direction of the first magnetic chuck. The upper wall, the first sidewall, the lower wall, and the second sidewall of the hole are sequentially connected to form a complete inner wall. The upper edge, the first side edge, the lower edge, and the second side edge of the first magnetic chuck are sequentially connected to form a complete outer perimeter. The walls of the hole are spaced apart from the corresponding edges of the first magnetic chuck, and the hole's position on the first magnetic chuck is arranged within a reasonable range. This reduces the magnetic restoring force exerted by the magnetic chuck assembly on the magnet assembly, thereby meeting the low power consumption requirement of the lens motor during focusing.

[0025] In one possible implementation, the hole is located at the middle of the width direction of the first magnetic member, which is parallel to the first direction. The hole is also located at the middle of the length direction of the first magnetic member, which is perpendicular to both the first and second directions.

[0026] In one possible implementation, the hole is configured as a rectangular, circular, or polygonal hole. The hole extends in a direction parallel to the thickness direction of the first magnetic component. Using this scheme, the hole's shape is a regular rectangle, circle, or polygon, which facilitates the processing and production of the first magnetic component.

[0027] In one possible implementation, the magnet assembly includes an upper edge and a lower edge disposed opposite to each other in a first direction, and the outer periphery of the first magnetic attractor includes an upper edge and a lower edge disposed opposite to each other in the first direction.

[0028] When the lens mount is in the first movable position, in the first direction, the upper edge of the magnet assembly is located on the side of the upper edge of the first magnetic member away from the lower edge or between the upper and lower edges, or the upper edge of the magnet assembly is aligned with the upper edge of the first magnetic member.

[0029] When the lens mount is in the second movable position, in the first direction, the lower edge of the magnet assembly is located on the side of the lower edge of the first magnetic member away from the upper edge or between the lower edge and the upper edge, or the lower edge of the magnet assembly is aligned with the lower edge of the first magnetic member.

[0030] In one implementation, when the lens mount is in the first moving position, the upper edge of the magnet assembly is aligned with the upper edge of the first magnetic chuck, or located on the side of the first magnetic chuck away from its lower edge (i.e., the upper edge of the magnet assembly extends beyond the upper edge of the first magnetic chuck). Furthermore, when the lens mount is in the second moving position, the lower edge of the magnet assembly is aligned with the lower edge of the first magnetic chuck, or located on the side of the first magnetic chuck away from its upper edge (i.e., the lower edge of the magnet assembly extends beyond the lower edge of the first magnetic chuck). Alternatively, it can be understood that during the movement of the lens mount along the first direction, the first magnetic chuck is located within the spatial area covered by the movement range of the magnet assembly in the first direction. This design optimizes the structural layout by making the height of the first magnetic chuck in the first direction less than the movement range of the magnet assembly in the first direction. This improves the space utilization inside the lens motor housing and avoids additional increases in the housing volume due to the installation of the first magnetic chuck, thus facilitating the miniaturization and weight reduction of the lens motor.

[0031] In one possible implementation, when the lens mount is located at an intermediate position between the first moving position and the second moving position, the center surface of the magnet assembly in the first direction is aligned with the center surface of the first magnetic member in the first direction, or the distance is set at a preset first distance threshold interval.

[0032] When the magnet assembly includes a second magnetic attractor, the center surface of the magnet assembly in the first direction is aligned with the center surface of the second magnetic attractor in the first direction, or, the distance is set at a preset second distance threshold interval, and the center surface of the second magnetic attractor in the first direction is aligned with the center surface of the first magnetic attractor in the first direction, or, the distance is set at a preset third distance threshold interval.

[0033] The intermediate position between the first and second moving positions is the zero point position of the lens mount. When the lens mount is in the zero point position, by limiting the relative positions between the magnet assembly and the first magnetic attractor, the magnet assembly and the second magnetic attractor, and the first magnetic attractor and the second magnetic attractor, it can be ensured that the magnetic attraction restoring force between the magnetic attractor and the magnet assembly is zero or within a small range when the lens mount is in the zero point position.

[0034] With the center plane of the magnet assembly as a reference, when the lens mount moves upward or downward in the first direction, the magnitude and trend of the magnetic attraction restoring force between the magnet assembly and the magnetic attraction assembly are symmetrical. This symmetrical mechanical characteristic allows the lens motor to simplify the drive and control design in the focusing process, ensuring the consistency of the speed and accuracy of the lens mount moving upward or downward in the first direction.

[0035] In one possible implementation, the lens motor further includes a drive assembly for driving the lens mount to slide relative to the housing in a first direction. The drive assembly includes a drive magnet group and a coil. The drive magnet group is fixedly disposed on the lens mount, and the coil is fixedly disposed on the housing at a position corresponding to the drive magnet group. When current flows through the coil, magnetism is generated. When the direction of the current changes, the polarity of the magnetism generated by the coil reverses. The interaction (attractive and repulsive forces) between the magnetizing coil and the drive magnet group produces a force that moves the lens mount in the first direction. It is understood that the magnitude of the driving force can be adjusted according to the magnitude of the current in the coil, thereby adjusting the moving distance of the lens mount. The direction of movement of the lens mount can be controlled by controlling the direction of the current in the coil. In this embodiment, the design of the drive assembly and the magnetic attraction assembly enables the lens motor to achieve a highly efficient and stable autofocus process, while reducing energy consumption during focusing, increasing focusing speed, and enhancing the overall performance of the lens motor.

[0036] In one possible implementation, when the magnet assembly includes a second magnetic attractor, in the second direction, the second magnetic attractor is located between the first magnetic attractor and the magnet assembly, or the first magnetic attractor is located between the second magnetic attractor and the magnet assembly; a portion or all of the hole is disposed opposite to the second magnetic attractor.

[0037] In this embodiment, along the second direction, the second magnetic attractor and the first magnetic attractor are located on the same side of the magnet assembly. At least a portion of the surface of the second magnetic attractor adjacent to the first magnetic attractor along the second direction is disposed opposite to a portion or all of the hole of the first magnetic attractor. This design enables the first and second magnetic attractors to jointly achieve: increasing the magnetic attraction force in the second direction (perpendicular to the optical axis) while reducing the magnetic recovery force in the first direction (i.e., the optical axis), thereby improving the stability of the lens mount movement during focusing and reducing the drive energy consumption of the lens motor.

[0038] In one possible implementation, the magnet assembly is reused as a drive magnet assembly in a lens motor drive component. The coil of the drive component is positioned opposite the magnet assembly in a second direction, and the coil has a ring-shaped structure surrounding a hollow region. In the second direction, the coil is located between the first magnetic attractor and the magnet assembly, and at least a portion of the second magnetic attractor is located within the hollow region enclosed by the coil.

[0039] In this embodiment, the magnet assembly is reused to drive the magnet assembly. That is, the magnet assembly is used both to generate magnetic attraction with the magnetic attraction assembly and to interact with the coil to generate Lorentz force, thus providing driving force. This reduces the number of magnet assemblies in the lens motor, resulting in a simpler structure and facilitating miniaturization and weight reduction of the lens motor. Furthermore, embedding the second magnetic attraction component within the hollow area enclosed by the coil improves the utilization of the internal space of the lens motor, making the overall structure of the lens motor more compact and further contributing to its miniaturization.

[0040] In one possible implementation, the second magnetic member includes an upper edge and a lower edge disposed opposite to each other in a first direction. When the lens mount is in a first movable position, in the first direction, the upper edge of the magnet assembly is located on the side of the upper edge of the second magnetic member away from the lower edge, or between the upper and lower edges, or the upper edge of the magnet assembly is aligned with the upper edge of the second magnetic member. When the lens mount is in a second movable position, in the first direction, the lower edge of the magnet assembly is located on the side of the lower edge of the second magnetic member away from the upper edge, or between the lower and upper edges, or the lower edge of the magnet assembly is aligned with the lower edge of the second magnetic member.

[0041] In one implementation, when the lens mount is in the first moving position, the upper edge of the magnet assembly is aligned with the upper edge of the second magnetic chuck, or located on the side of the second magnetic chuck away from its lower edge (i.e., the upper edge of the magnet assembly extends beyond the upper edge of the second magnetic chuck). Similarly, when the lens mount is in the second moving position, the lower edge of the magnet assembly is aligned with the lower edge of the second magnetic chuck, or located on the side of the second magnetic chuck away from its upper edge (i.e., the lower edge of the magnet assembly extends beyond the lower edge of the second magnetic chuck). This can be understood as the second magnetic chuck being located within the space covered by the movement range of the magnet assembly in the first direction during the movement of the lens mount. This design optimizes the structural layout by making the height of the second magnetic chuck in the first direction less than the movement range of the magnet assembly in the first direction. This improves the space utilization inside the lens motor housing and avoids additional increases in housing volume due to the installation of the second magnetic chuck, thus facilitating the miniaturization and weight reduction of the lens motor.

[0042] In one possible implementation, the first magnetic attractor is configured as a sheet-like or block-like structure, and the second magnetic attractor is configured as a solid sheet-like or block-like structure. The magnet assembly comprises a plurality of magnets arranged sequentially in a first direction.

[0043] Using the above scheme, the first and second magnetic components are sheet-like or block-like structures, which are simple in structure and facilitate the arrangement of the first and second magnetic components inside the lens motor. The magnetic assembly includes multiple magnets, which can be freely combined, helping to improve the flexibility of the magnet assembly arrangement inside the lens motor and contributing to the miniaturization of the lens motor.

[0044] In one possible implementation, each magnet is a magnet or a permanent magnet, and the first and second magnetic attracting components are made of a metallic material that can be attracted by the magnet.

[0045] A second aspect of this application provides a camera module, including a lens, an image sensor, and a lens motor provided by the first aspect and any possible implementation thereof; wherein the lens includes a first lens group, which is fixed in a mounting hole of a lens mount; the image sensor is disposed on the light-emitting side of the lens. The lens is mounted in the lens mount of the lens motor, and the image sensor is disposed behind the first lens group along the light incident direction. The lens motor provided by any of the above implementations in the camera module of this application can effectively reduce the driving energy consumption of the lens motor during the focusing process and improve the motion stability of the focusing process.

[0046] A third aspect of this application also provides a terminal device, including a housing and a camera module provided in the second aspect and any implementation thereof, wherein the camera module is mounted on the housing. The terminal device of this application, employing the camera module provided in the second aspect, can improve the stability of the focusing process during shooting while reducing energy consumption, thereby improving the overall performance of the terminal device. Attached Figure Description

[0047] Figure 1a This is a structural schematic diagram of the terminal device from the front view of an embodiment of this application;

[0048] Figure 1b for Figure 1a A schematic diagram of the decomposed structure;

[0049] Figure 1c for Figure 1a Cross-sectional view along the AA direction;

[0050] Figure 1d This is a cross-sectional view of another implementation of the terminal device according to the embodiments of this application;

[0051] Figure 2a This is a three-dimensional structural diagram of the terminal device from the rear view of an embodiment of this application;

[0052] Figure 2b This is a schematic diagram of the control principle of the terminal device in an embodiment of this application;

[0053] Figure 3a This is a three-dimensional structural diagram of the lens motor according to an embodiment of this application;

[0054] Figure 3b This is a cross-sectional schematic diagram of the lens motor from one perspective according to an embodiment of this application;

[0055] Figure 3c This is a cross-sectional schematic diagram of the lens motor according to an embodiment of this application from another perspective;

[0056] Figure 4a This is a schematic diagram illustrating the control principle of the lens motor in an embodiment of this application;

[0057] Figure 4b1 and Figure 4b2 This is an enlarged cross-sectional view and a simplified positional view of the magnetic attraction component and the drive component when the lens mount is in the zero position in the lens motor of this application embodiment;

[0058] Figure 4c1 and Figure 4c2 This is a cross-sectional view and a simplified positional view of the magnetic suction component and the drive component when the lens mounting base in the lens motor of this application is in the first moving position;

[0059] Figure 4d1 and Figure 4d2 This is a cross-sectional view and a simplified positional view of the magnetic suction component and the drive component when the lens mount is in the second moving position in the lens motor of this application embodiment;

[0060] Figure 5a A cross-sectional schematic diagram of a reference design for the magnetic attachment component in a lens motor;

[0061] Figure 5b A three-dimensional structural diagram of a magnetic suction component as a reference design for a magnetic suction assembly in a lens motor;

[0062] Figure 5c Simulation analysis curves of the magnetic restoring force of a magnetic component in a reference design for a magnetic attraction assembly in a lens motor;

[0063] Figure 6a A three-dimensional structural diagram of a magnetic chuck component, representing another reference design for a magnetic chuck assembly in a lens motor.

[0064] Figure 6b Simulation analysis curves of the magnetic restoring force of the magnetic component in another reference design for the magnetic attraction assembly in a lens motor;

[0065] Figure 7a This is a three-dimensional structural diagram of the magnetic suction assembly and the drive assembly of the lens motor according to an embodiment of this application;

[0066] Figure 7b This is a front view schematic diagram of the magnetic suction assembly and the drive assembly of the lens motor according to an embodiment of this application;

[0067] Figure 7c This is a top view schematic diagram of the magnetic suction assembly and drive assembly of the lens motor according to an embodiment of this application;

[0068] Figure 7d This is a side view schematic diagram of the magnetic suction assembly and drive assembly of the lens motor according to an embodiment of this application;

[0069] Figure 7e This is a front view schematic diagram of the coil and the second magnetic suction member in another possible implementation of the lens motor according to an embodiment of this application;

[0070] Figure 8a1 This is a schematic diagram of the first magnetic suction component of the lens motor in an embodiment of this application;

[0071] Figure 8a2 This is a schematic diagram showing the area S1 of the first region of the first magnetic component of the lens motor and the area S2 of the first end of the hole in an embodiment of this application.

[0072] Figure 8b This is a schematic diagram illustrating one implementation method where the height H of the first magnetic suction component of the lens motor and the height h of the hole are reduced according to an embodiment of this application.

[0073] Figure 8c This is a schematic diagram illustrating one implementation method when the height H of the first magnetic component of the lens motor and the height h of the hole increase according to an embodiment of this application.

[0074] Figure 8d The above is a simulation analysis curve of the magnetic attraction restoring force generated by the first and second magnetic attraction components of the lens motor on the magnet assembly, and the resultant force of the magnetic attraction restoring force generated by the first and second magnetic attraction components on the magnet assembly, respectively, in the embodiments of this application.

[0075] Figure 8e The simulation analysis curves show the magnetic attraction forces generated by the first and second magnetic attractors of the lens motor on the magnet assembly, and the resultant force of the magnetic attraction forces generated by the first and second magnetic attractors on the magnet assembly, respectively, in the embodiments of this application.

[0076] Figure 9a This is a schematic diagram showing the alignment of the center plane of the magnet assembly of the lens motor in an embodiment of this application with the center planes of the first magnetic accumulator and the second magnetic accumulator;

[0077] Figure 9b This is a schematic diagram showing the center surface of the first magnetic component of the lens motor in an embodiment of this application being offset upwards relative to the center surface of the magnet assembly;

[0078] Figure 9c This is a schematic diagram showing the center surface of the first magnetic component of the lens motor in an embodiment of this application being offset downwards relative to the center surface of the magnet assembly;

[0079] Figure 10a This is a schematic diagram showing the center surface of the second magnetic component of the lens motor in an embodiment of this application being offset upwards relative to the center surface of the magnet assembly;

[0080] Figure 10b This is a schematic diagram showing the center surface of the second magnetic component of the lens motor in an embodiment of this application being offset downwards relative to the center surface of the magnet assembly;

[0081] Figure 11a This is a schematic diagram showing that the hole of the first magnetic member of the lens motor in an embodiment of this application is offset upward relative to the center surface of the magnet assembly;

[0082] Figure 11b This is a schematic diagram showing that the hole of the first magnetic member of the lens motor in an embodiment of this application is offset downward relative to the center surface of the magnet assembly;

[0083] Figures 12a to 12e These are schematic diagrams showing different shapes of the holes in the lens motor according to embodiments of this application;

[0084] Figure 13a This is a schematic diagram illustrating one implementation of a lens motor in this application where the first magnetic chuck is located between the second magnetic chuck and the magnet assembly;

[0085] Figure 13b This is a three-dimensional structural diagram of the second magnetic element in the lens motor according to an embodiment of this application;

[0086] Figure 13c This is a schematic diagram illustrating one implementation of a process hole on the second magnetic component in the lens motor according to an embodiment of this application;

[0087] Figure 14a This is a simulation analysis curve of the magnetic attraction restoring force generated by the first magnetic attraction member and the second magnetic attraction member on the magnet group, and the resultant force of the magnetic attraction restoring force generated by the first magnetic attraction member and the second magnetic attraction member on the magnet group, respectively, in the lens motor of the embodiment of this application when the first magnetic attraction member is located between the second magnetic attraction member and the magnet group.

[0088] Figure 14b This is a simulation analysis curve of the magnetic attraction force generated by the first magnetic attraction component and the second magnetic attraction component on the magnet group, and the resultant force of the magnetic attraction force generated by the first magnetic attraction component and the second magnetic attraction component on the magnet group, respectively, in the lens motor of the embodiment of this application when the first magnetic attraction component is located between the second magnetic attraction component and the magnet group.

[0089] Figure 15a This is a schematic diagram illustrating one implementation of a blind hole on the first magnetic component of the magnetic traction assembly in the lens motor of this application embodiment;

[0090] Figure 15b This is a three-dimensional structural diagram of the first magnetic component in the lens motor of this application, where the hole is a blind hole;

[0091] Figure 15c This is a three-dimensional structural diagram of the lens motor in an embodiment of the present application, showing that the hole on the first magnetic component is a blind hole and the first magnetic component is provided with a process hole.

[0092] Figure 15d This is a schematic diagram illustrating another implementation method in which the hole on the first magnetic member of the magnetic traction assembly in the lens motor of this application is a blind hole;

[0093] Figure 16a is a simulation analysis curve of the magnetic attraction restoring force generated by the first magnetic attraction component on the magnet assembly in the lens motor of the embodiment of this application;

[0094] Figure 16b This is a simulation analysis curve of the magnetic attraction force generated by the first magnetic attraction component on the magnet assembly in the lens motor of this application embodiment;

[0095] Figure 17a This is a three-dimensional structural diagram of an exemplary structure of a lens motor according to an embodiment of this application;

[0096] Figure 17b This is an exploded structural diagram of an exemplary structure of a lens motor according to an embodiment of this application;

[0097] Figure 17c This is a cross-sectional schematic diagram of an exemplary structure of a lens motor according to an embodiment of this application;

[0098] Figure 18a The simulation analysis curves show the effect of the change in the height h of the hole on the magnetic attraction restoring force generated by the first magnetic attraction component on the magnet assembly when the movement range of the magnet assembly in the lens motor of this application covers the first magnetic attraction component.

[0099] Figure 18b This is a simulation analysis curve showing the effect of the change in the height h of the hole on the magnetic attraction restoring force generated by the first magnetic attractor on the magnet group when the first magnetic attractor covers the movement range of the magnet group in the lens motor of this application embodiment.

[0100] Explanation of reference numerals in the attached figures:

[0101] A reference design:

[0102] 3', outer casing; 4', lens mount; 61', magnet assembly; 62', magnetic chuck assembly; 63', first magnetic chuck component;

[0103] Another reference design:

[0104] 63”, First magnetic chuck;

[0105] This application

[0106] 100. Terminal equipment;

[0107] 101. Display screen;

[0108] 102. Housing; 103. Back cover; 104. Mid-frame; 105. Base plate; 106. Outer frame; 107. Battery;

[0109] 108. Circuit board; 109. Processor;

[0110] 1. Camera module; 11. Image sensor; 12. Lens; 13. First lens group;

[0111] 2. Lens motor;

[0112] 3. Outer shell; 31. Upper shell; 32. Lower shell; 33. Upper wall surface; 34. Lower wall surface; 35. First side wall; 36. Accommodation space; 37. Circuit board; 371. First part;

[0113] 4. Lens mounting base; 401. First mounting part; 402. Second mounting part; 403. Third mounting part; 404. Slide rail; 405. Slide groove; 406. First receiving groove; 407. Second receiving groove;

[0114] 41. Mounting hole; 42. Mounting groove; 43. First sidewall; 44. Guide structure; 45. Guide rail; 46. Groove; 47. First surface; 48. Second surface;

[0115] 5. Drive assembly; 51. Coil; 52. Drive magnet assembly;

[0116] 53. First image stabilization drive component; 531. First image stabilization coil; 532. First magnet;

[0117] 54. Second image stabilization drive assembly; 541. Second image stabilization coil; 542. Second magnet;

[0118] 6. Magnetic assembly; 61. Magnet assembly; 610. Magnet; 611. Upper edge; 612. Lower edge;

[0119] 62. Magnetic suction assembly;

[0120] 63. First magnetic element; 631. Upper edge; 632. Lower edge; 633. First side edge; 634. Second side edge; 635. First outer surface; 636. Second outer surface; 637. First region;

[0121] 64. Second magnetic chuck; 641. Upper edge; 642. Lower edge;

[0122] 65. Hole; 651. Through hole; 652. Blind hole; 653. First end; 654. Upper wall surface; 655. Lower wall surface; 656. First side wall surface; 657. Second side wall surface;

[0123] O1, optical axis; X, first direction; Y, second direction; Z, third direction; A, width direction of the first magnetic accumulator; B, thickness direction of the first magnetic accumulator; C, length direction of the first magnetic accumulator. Detailed Implementation

[0124] In existing technologies, a magnetic attraction structure is typically added within the lens motor. This structure utilizes the magnetic attraction between the magnetic component and the magnet assembly to ensure a tighter attachment of the lens mount to the motion guide, thereby enhancing focusing stability. However, when the magnetic component and magnet assembly shift relative to each other, a magnetic restoring force is generated along the optical axis, pointing towards the zero-point position of the magnet assembly. As the magnetic attraction increases, the restoring force also increases. When the magnet assembly moves away from the central position (also known as the equilibrium position or zero-point position) along the optical axis, the restoring force hinders its movement, requiring the drive components to consume additional energy to overcome it. Therefore, current lens motors struggle to simultaneously increase the magnetic attraction and decrease the restoring force, resulting in an inability to simultaneously achieve high motion stability and low system power consumption during autofocus.

[0125] To address the aforementioned technical problems, this application provides a lens motor that enhances the magnetic attraction between the lens mount and the housing, thereby improving the stability of the lens mount's movement during focusing. Furthermore, it reduces the magnetic restoring force along the optical axis, thereby reducing the resistance experienced by the lens mount during movement, lowering system power consumption, and improving the overall performance of the lens motor.

[0126] This application also provides a camera module that utilizes the lens motor provided in this application. This effectively reduces the driving energy consumption of the lens motor during focusing while improving the motion stability during focusing.

[0127] This application also provides a terminal device that uses the camera module provided in this application. This can improve the stability of the focusing process during shooting while reducing power consumption, thus improving the overall performance of the terminal device. It should be noted that the terminal device described here refers to a type of terminal device equipped with a camera module, including but not limited to monitors, laptops, tablet computers, personal digital assistants (PDAs), personal computers (PCs), smartphones, smart wearable devices, in-vehicle devices, and professional camera equipment. For ease of explanation, the following description uses a mobile phone as an example of a terminal device.

[0128] Please see Figures 1a to 2b , Figure 1a This is a structural schematic diagram of the terminal device 100 from the front view of an embodiment of this application; Figure 1b for Figure 1a A schematic diagram of the decomposed structure; Figure 1c for Figure 1a Cross-sectional view along the AA direction; Figure 1d This is a cross-sectional view of another implementation of the terminal device 100 according to an embodiment of this application; Figure 2a This is a three-dimensional structural diagram of the terminal device 100 according to an embodiment of this application; Figure 2b This is a schematic diagram of the control principle of the terminal device 100 in an embodiment of this application.

[0129] like Figure 1a As shown, the terminal device 100 includes a housing 102 and a display screen 101. The display screen 101 is fixedly mounted on the housing 102, which supports the display screen 101 and houses and protects various electronic components inside the terminal device 100. Figure 2a As shown, and in combination Figure 1aIt is understood that the terminal device 100 also includes a camera module 1, which is mounted on the housing 102.

[0130] It will be understood by those skilled in the art that the specific structure of the housing 102 is not limited. For example... Figure 1b and Figure 1c As shown, in one possible implementation, the housing 102 may include a mid-frame 104 and a rear cover 103. The mid-frame 104 serves as the support frame for the terminal device 100. It includes a base plate 105 and an outer frame 106 surrounding and connected to the outer periphery of the base plate 105. In the thickness direction of the terminal device 100, the display screen 101 and the rear cover 103 are respectively mounted at both ends of the outer frame 106, so that the display screen 101 and the rear cover 103 are located on opposite sides of the base plate 105. A mounting cavity is formed between the rear cover 103 and the base plate 105 for mounting internal components such as the battery 107, circuit board 108, camera module 1, and antenna.

[0131] Those skilled in the art will understand that the base plate 105 is a support frame located inside the terminal device 100. The outer frame 106 is a structure surrounding the periphery of the terminal device 100. Figure 1b As shown, the outer frame 106 can extend around the periphery of the terminal device 100 and the display screen 101, specifically surrounding the four sides of the display screen 101 to help fix the display screen 101.

[0132] The back cover 103 is a structure on the terminal device 100 that is positioned opposite the display screen 101. It is used to enclose the components of the terminal device 100 inside the terminal device 100, and also provides protection against dust, impacts, and hardware scratches. Figure 1d As shown, in another possible implementation, the terminal device 100 may not include a separately provided back cover 103, but instead use the bottom plate 105 of the middle frame 104 as the back cover 103. This application embodiment does not limit this. The above is a detailed description of the housing 102 of the terminal device 100. The following continues to describe other components.

[0133] like Figure 1a The display screen 101 of the terminal device 100 is used to display images, and its specific type is not limited. Users can interact with the terminal device 100 through the display screen 101, for example, using the camera module 1 (see...). Figure 2a It can be used for operations such as taking photos and videos.

[0134] It should be noted that the position of the camera module 1 within the terminal device 100 is not limited. For example, it can be installed on the front, back, or side of the terminal device 100. In this embodiment, the side where the display screen 101 of the terminal device 100 is located is defined as the front of the terminal device 100, the side where the back cover 103 of the terminal device 100 is located is defined as the back of the terminal device 100, and the surface connecting the front and back of the terminal device 100 is defined as the side of the terminal device 100. Figure 2a As shown, in one possible implementation, the camera module 1 is disposed on the back of the terminal device 100.

[0135] like Figure 1c As shown, a circuit board 108 is disposed inside the terminal device 100. The circuit board 108 serves as a carrier for the electrical connection of electronic components and can be the main board of the terminal device 100 or a sub-board (e.g., a sub-board of a foldable screen phone). In one possible implementation, the circuit board 108 is the main board of the terminal device 100. The size of the circuit board 108 and its position within the terminal device 100 are not limited; the figures are for illustrative purposes only and do not limit the scope of the embodiments of this application. In one possible implementation, the circuit board 108 is mounted in the mounting cavity between the back cover 103 and the bottom plate 105. The circuit board 108 includes multiple interconnected functional modules (not shown in the figures) to implement corresponding functions, such as a charging management module, a power management module, wireless communication, and an audio module. The embodiments of this application do not impose any limitations on these modules.

[0136] like Figure 2b As shown, in one possible implementation, the terminal device 100 may further include a processor 109. The processor 109 may be disposed on the circuit board 108. It is understood that the camera module 1 is communicatively connected to the processor 109 on the circuit board 108, and the processor 109 is communicatively connected to the display screen 101 (see Figure 2), so that the user can operate the camera module 1 to take pictures by clicking the display screen 101, and the captured images or videos can be displayed on the display screen 101.

[0137] The processor 109 is responsible for executing instructions from the operating system and applications, and can perform data processing and computation. The processor 109 may include multiple processing units, such as an application processor (AP), a signal processing unit (modem), a modem processing unit, a graphics processing unit (GPU), an image signal processor (ISP), a control unit, a video encoding / decoding unit, a digital signal processor (DSP), a baseband processing unit, and a neural network processing unit (NPU). Different processing units can be independent devices or integrated together; this application embodiment does not limit this. In one possible implementation, the processor 109 may be, for example, a system-on-a-chip (SoC), which is an integrated circuit that integrates the computing processor 109 and other electronic systems onto a single chip. In other alternative implementations, the processor 109 may also adopt other types; this application embodiment does not limit this.

[0138] It should be noted that the above description of the terminal device 100 is only an example. The terminal device 100 provided in this application embodiment is not limited to the above structure. The terminal device 100 may include more or fewer components than shown in the figure, and this application embodiment does not impose any limitations on this. The system composition and structural composition of the camera module 1 will be described below.

[0139] like Figure 2b As shown, the camera module 1 includes a lens 12, an image sensor 11, and a lens motor 2.

[0140] Those skilled in the art will understand that the specific structure of lens 12 is not limited. Exemplarily, lens 12 includes at least one lens group (specifically, it can be one, two, or three, etc.). In one possible implementation, lens 12 includes a first lens group 13 (see...). Figure 3b The first lens group 13 is mounted on the lens mount 4 of the lens motor 2 (see...). Figure 3b (For details regarding the specific structure of the lens mount 4, please refer to the following text). The first lens group 13 includes at least one lens (e.g., one or more, which is not limited in this embodiment). It should be noted that the specific type of lens described herein is also not limited. For example, the lens may be a telescope lens.

[0141] like Figure 2b As shown, and in combination Figure 3bIt is understood that the image sensor 11 is located on the light-emitting side of the lens 12. When taking a picture or recording a video using the camera module 1, light is first emitted or refracted from the object to be photographed. Then, the light enters the light-receiving side of the lens 12, is processed (e.g., refracted) by the various lenses in the lens 12, and is emitted from the light-emitting side of the lens 12. Finally, it is projected onto the image sensor 11, thereby forming a light image on the photosensitive surface of the image sensor 11 (or, as can be understood, the surface of the image sensor 11 facing the lens 12). The image sensor 11 converts the light image into an electrical signal proportional to the light image and transmits this electrical signal to the corresponding components (e.g., the processor 109 and storage components) in the terminal device 100, thus realizing the conversion from light to electrical signal. It should be noted that the type of image sensor 11 is not limited.

[0142] In one possible implementation, the camera module 1 may further include a substrate (not shown). The type of substrate is not limited; for example, it may be a PCB board. The image sensor 11 is mounted on the substrate and electrically connected to other components of the terminal device 100 (e.g., the processor 109 on the circuit board 108) via the substrate. The substrate is mounted on the mid-frame 104 of the terminal device 100.

[0143] It should be noted that in order to achieve the autofocus function of the camera module 1, the lens 12 or the image sensor 11 needs to be moved in the optical axis O1 direction (first direction X). Therefore, the lens 12 or the image sensor 11 needs to be used as a moving part. For example, in this embodiment, the lens 12 is mainly used as a moving part, and the lens motor 2 is used as a driving member to drive the lens 12 to move in the first direction X.

[0144] Furthermore, the processor 109 on the motherboard (circuit board 108) is communicatively connected to the camera module 1. The camera module 1 can acquire light signals from the external environment, convert the light signals into electrical signals, process the electrical signals to generate image information, and send it to the processor 109 on the motherboard. At this time, the processor 109 can further process the image information transmitted by the camera module 1 and store or transmit the processed image information to the display screen 101 for display. Thus, the terminal device 100 can meet the user's needs for video calls, recording, and shooting.

[0145] The principle of autofocus is as follows: the lens 12 of the camera module 1 projects the image onto the surface of the image sensor 11. The photosensitive surface of the image sensor 11 then converts the light signal into an electrical signal and transmits it to the processor 109. At this time, the processor 109 generates image information, identifies the external environment, and calculates the distance the lens 12 needs to move in the first direction X. This information is then fed back to the lens motor 2 in the camera module 1, which drives the lens 12 to move in the first direction X, thereby realizing the autofocus function of the terminal device 100.

[0146] The structure and working principle of camera module 1 have been described in detail above with reference to the accompanying drawings. The structure and working principle of lens motor 2 will be explained below with reference to the accompanying drawings.

[0147] Please see Figures 3a-3c , Figure 3a This is a three-dimensional structural diagram of the lens motor 2 according to an embodiment of this application; Figure 3b for Figure 3a Schematic diagram of the cross section in the middle; Figure 3c for Figure 3a Schematic diagram 2 of the cross-section.

[0148] like Figure 3a and Figure 3b As shown, this application embodiment provides a lens motor 2, including a housing 3 and a lens mounting base 4. The housing 3 forms a receiving space 36. The lens mounting base 4 is provided with a mounting hole 41, and the first lens group 13 of the lens 12 is fixedly mounted in the mounting hole 41. The lens mounting base 4 is disposed in the receiving space 36 of the housing 3 and is slidably connected to the housing 3 along a first direction X, so that the lens mounting base 4 can slide relative to the housing 3 between a first moving position and a second moving position. The first direction X is the optical axis O1 direction of the first lens group 13.

[0149] The mounting hole 41 extends through the lens mount 4 along the optical axis O1 (i.e., the first direction X) of the first lens group 13. The image sensor 11 is located on the light-emitting side of the mounting hole 41 and is mounted on the substrate of the camera module 1. When the lens mount 4 moves along the first direction X, it drives the first lens group 13 of the lens 12 to move along the first direction X toward or away from the image sensor 11, thereby changing the relative distance between the first lens group 13 and the image sensor 11, so that objects at different distances can form a clear image on the photosensitive surface of the image sensor 11. The lens mount 4 drives the first lens group 13 to slide up and down relative to the image sensor 11 along the first direction X within the receiving space 36 of the housing 3. The range of its movement is between the first moving position and the second moving position, thereby achieving focusing.

[0150] The movement of the lens mount 4 in the first direction X (i.e., the direction of the optical axis O1) is achieved by the drive assembly 5. For example... Figure 3b As shown, in one possible implementation, the lens motor 2 further includes a drive assembly 5, which drives the lens mount 4 to slide relative to the housing 3 along a first direction X. The drive assembly 5 applies a driving force to the lens mount 4 to achieve automatic sliding of the lens mount 4 in the first direction X, thereby realizing the autofocus function of the camera module 1.

[0151] Furthermore, one or more drive components 5 may be provided, and may be provided on at least one side of the lens mount 4, or multiple drive components 5 may be provided on multiple sides of the lens mount 4 respectively. This application embodiment does not limit this. For example, such as... Figure 3b As shown, the lens motor 2 has a drive component 5 inside, which is located between the lens mount 4 and the corresponding side wall of the housing 3.

[0152] Furthermore, the specific structural form of the driving component 5 is not limited. The driving component 5 can be a coil-magnet structure driving component 5 or a spring-type driving component 5, etc., and the embodiments of this application do not impose any restrictions on this. Figure 3b As shown, in one possible implementation, the drive assembly 5 includes a drive magnet group 52 and a coil 51. The drive magnet group 52 includes a plurality of drive magnets and is fixedly disposed on the lens mount 4. The coil 51 is fixedly disposed on the housing 3 at the position corresponding to the drive magnet group 52.

[0153] Specifically, the drive magnet assembly 52 is fixedly mounted on the lens mount 4 and moves with it. The coil 51 is fixedly mounted on the housing 3 and remains stationary. When focusing is required, the processor 109 on the main board (circuit board 108) applies a controllable current to the coil 51. When the current flows through the coil 51, it generates magnetism. When the direction of the current changes, the polarity of the magnetism generated by the coil 51 reverses. The interaction (attraction and repulsion) between the magnetized coil 51 and the drive magnet assembly 52 produces a driving force that moves the lens mount 4 in the first direction X. It can be understood that by changing the direction of the current in the input coil 51, the direction of this driving force can be changed, thereby enabling the lens mount 4 to move closer to or further away from the image sensor 11. By precisely controlling the magnitude and duration of the current in the input coil 51, the magnitude and duration of the driving force can be precisely controlled, thereby controlling the moving distance and speed of the lens mount 4 and achieving autofocus.

[0154] It will be understood by those skilled in the art that the relative positional relationship between coil 51 and driving magnet assembly 52 is not limited. For example... Figure 3bAs shown, in one possible implementation, the coil 51 and the driving magnet group 52 are arranged opposite to each other, which can maximize the energy conversion efficiency. The direction of the force between the coil 51 and the driving magnet group 52 is parallel to the first direction X, which effectively reduces the energy wasted on the component force in other directions. This means that a larger driving force can be obtained with a smaller current, which helps to reduce the power consumption of the system.

[0155] Furthermore, the specific structure of coil 51 is not limited. For example... Figure 3b As shown, in one possible implementation, coil 51 has a ring-shaped structure and a hollow region is formed around it. For example, coil 51 is rectangular or racetrack-shaped (see...). Figure 7a ) Layout. In other possible implementations, coil 51 has a circular hollow structure, but this embodiment does not limit this.

[0156] Those skilled in the art will understand that the method by which the drive magnet assembly 52 is fixed on the lens mount 4 is not limited. For example... Figure 3b As shown, in one possible implementation, an inwardly recessed mounting groove 42 is formed on the outer wall surface of the lens mount 4, and the drive magnet assembly 52 is embedded in the mounting groove 42. The shape of the mounting groove 42 matches the shape of the drive magnet assembly 52. ​​In other possible implementations, the drive magnet assembly 52 is directly bonded to the side wall of the lens mount 4, and this embodiment does not limit this.

[0157] Those skilled in the art will understand that the method by which the coil 51 is fixedly mounted on the housing 3 is not limited. For example... Figure 3b As shown, in one possible implementation, the coil 51 is fixed to a flexible printed circuit board (FPC), facilitating power supply to the coil 51 via traces inside the flexible printed circuit board 108. The flexible printed circuit board is fixedly connected to the housing 3. In other possible implementations, the coil 51 can be directly fixed to the inner wall of the housing 3 and electrically connected to the main board (circuit board 108) via leads. This embodiment does not limit the implementation in this application.

[0158] In the lens motor 2, a specific mechanical track can also be provided, allowing a specific optical unit (i.e., the lens mount 4 on which the first lens group 13 is mounted) to move along the mechanical track, thereby maintaining it on the desired path (i.e., the optical axis O1 direction of the first lens group 13) without deviation. For example... Figure 3c As shown, in one possible implementation, a guide structure 44 is also provided inside the housing 3 of the lens motor 2. The lens mount 4 is slidably connected to the housing 3 along the first direction X via the guide structure 44.

[0159] It should be noted that the specific structure of the guide structure 44 is not limited in the embodiments of this application. In one possible implementation, such as Figure 3cAs shown, the guide structure 44 includes a guide rail 45 extending along a first direction X and fixedly connected to the housing 3. A groove 46 extending along the first direction X is formed on the side wall of the lens mount 4 near the guide rail 45. The guide rail 45 is embedded in the groove 46, and the wall surface of the groove 46 always maintains contact with the surface of the guide rail 45, forming a sliding pair. The drive assembly 5 drives the groove 46 of the lens mount 4 to slide relative to the guide rail 45 to complete focusing. The cooperation between the guide rail 45 and the slide groove 405 guides the movement direction of the lens mount 4, effectively suppressing the shaking and vibration that may occur when the lens mount 4 is subjected to external impacts during movement.

[0160] The shape of the groove 46 on the side wall of the lens mount 4 is not limited. For example, the shape of the groove 46 can be arc-shaped, rectangular, V-shaped, trapezoidal, etc., and this embodiment does not limit it.

[0161] Furthermore, the number of guide structures 44 between the lens mount 4 and the housing 3 is unlimited, and there can be one or more.

[0162] To improve the stability of the lens mount 4's movement within the housing 3, a magnetic attraction component 6 is also provided in the lens motor 2. This allows the two opposing sidewalls of the lens mount 4 and the housing 3 to attract each other, thereby better confining the lens mount 4 within its corresponding movement track. For example, it allows the groove 46 wall of the lens mount 4 to better fit against the outer wall of the guide rail 45 on the housing 3, resulting in greater stability of the lens mount 4's movement in the optical axis O1 direction (i.e., the first direction X). This better prevents tilting and jumping phenomena that occur during the sliding of the lens 12 mounting base along the first direction X, and helps improve the stability of the camera module 1's focusing process. The basic structure and function of the magnetic attraction component 6 are described below with reference to the accompanying drawings.

[0163] like Figure 3b As shown, in one possible implementation, the lens motor 2 further includes a magnetic attraction assembly 6. The magnetic attraction assembly 6 is disposed between the corresponding sidewalls of the lens mount 4 and the housing 3, and includes a magnet assembly 61 and a magnetic attraction assembly 62. The magnet assembly 61 includes at least one magnet 610 and is fixedly disposed on the lens mount 4. The magnetic attraction assembly 62 includes at least one magnetic element (e.g., a first magnetic element 63 and a second magnetic element 64 mentioned below) and is fixedly disposed on the housing 3 at the position corresponding to the magnet assembly 61. There is an interaction force between the magnetic attraction assembly 62 and the magnet assembly 61 of the magnetic attraction assembly 6, including a magnetic attraction force in the second direction Y (perpendicular to the optical axis O1). The magnetic attraction force is the attractive force between the magnetic attraction assembly 62 and the magnet assembly 61 in the second direction Y; appropriately increasing the magnetic attraction force can more effectively constrain the lens mount 4.

[0164] It should be noted that the placement of the magnetic attraction group 62 and the magnet group 61 in the magnetic attraction assembly 6 is not limited. For example... Figure 3b As shown, in one possible implementation, the magnet assembly 61 and the magnetic attraction assembly 62 of the magnetic attraction component 6 are respectively fixedly disposed on two opposing sidewalls between the lens mount 4 and the housing 3. That is, the magnet assembly 61 is fixedly disposed on one sidewall of the lens mount 4, and the magnetic attraction assembly 62 is fixedly disposed on one sidewall of the housing 3. This sidewall of the housing 3 is disposed opposite to the sidewall of the lens mount 4 on which the magnet assembly 61 is disposed. For example, the magnet assembly 61 is fixed on the first sidewall 43 of the lens mount, and correspondingly, the magnetic attraction assembly 62 is fixedly disposed on the first sidewall 35 of the housing. The first sidewall 43 of the lens mount and the first sidewall 35 of the housing are disposed opposite to each other. For example, the first sidewall 43 of the lens mount and the first sidewall 35 of the housing are disposed opposite to each other in the second direction Y. Furthermore, the magnet assembly 61 and the magnetic attraction assembly 62 are arranged opposite each other in the second direction Y, so that there is a magnetic attraction between the magnet assembly 61 and the magnetic attraction assembly 62 in the second direction Y. This causes the two opposing side walls of the lens mount 4 and the housing 3 to attract each other, making the groove 46 of the lens mount 4 fit more tightly with the guide rail 45. This better confines the lens mount 4 within the corresponding movement track of the housing 3, effectively suppressing unwanted degree-of-freedom vibrations. This, in turn, improves the movement stability and shock resistance of the lens mount 4 under complex working conditions (such as fast focusing), and helps to improve the focusing effect.

[0165] like Figure 3b and Figure 4a As shown, the working principle of the lens motor 2 during focusing is as follows: When the coil 51 is energized, it generates magnetism when current flows through it. When the direction of the current changes, the polarity of the magnetism generated by the coil 51 reverses. The interaction (attractive and repulsive forces) between the magnetizing coil 51 and the driving magnet assembly 52 produces a driving force that moves the lens mount 4 in the first direction X. When the lens mount 4 moves along the first direction X, the first magnetic suction member 63 and the second magnetic suction member 64 apply a magnetic attraction force in the second direction Y to the magnet assembly 61, making the inner wall of the groove 46 of the lens mount 4 tightly adhere to the outer peripheral surface of the guide rail 45, ensuring the stability of the lens mount 4 during movement. The specific structure and working principle of the magnetic suction assembly 6 are explained below with reference to the accompanying drawings.

[0166] As will be understood by those skilled in the art, as shown in the figure Figure 3b and Figure 4aAs shown, in one possible implementation, the magnet assembly 61 can be reused as the drive magnet assembly 52 of the drive assembly 5, with the coil 51 of the drive assembly 5 positioned opposite to the magnet assembly 61 in the second direction Y. On one hand, the magnet assembly 61 serves as the driving force for the interaction between the drive magnet assembly 52 and the coil 51 to drive the movement of the lens mount 4; on the other hand, the magnet assembly 61, as part of the magnetic attraction assembly 6, interacts with the magnetic attraction assembly 62 to generate a magnetic attraction force in the second direction Y. By reusing the magnet assembly 61, the unity of the driving and attraction functions in terms of physical location and magnetic field source is ensured. This effectively simplifies the internal mechanical structure of the lens motor 2, reduces the number of magnet assemblies 61 inside the lens motor 2, reduces the complexity of parts and assembly difficulty, helps optimize the internal spatial structure of the lens motor 2, reduces manufacturing costs, and contributes to the miniaturization and weight reduction of the lens motor 2.

[0167] In other possible implementations, the drive magnet group 52 of the drive assembly 5 and the magnet group 61 in the magnetic attraction assembly 6 can also be set independently of each other. The drive magnet group 52 of the drive assembly 5 and the magnet group 61 of the magnetic attraction assembly 6 can be set at different positions of the lens mount 4, and the corresponding coil 51 and magnetic attraction group 62 are also adjusted accordingly. This application embodiment does not limit this.

[0168] The number of magnets 610 set in magnet group 61 is unlimited; there can be one or more. For example... Figure 3b As shown, in one possible implementation, the magnet assembly 61 includes a plurality of magnets 610 arranged sequentially in the first direction X. The plurality of magnets 610 can be freely combined, which helps to improve the flexibility of the magnet assembly 61 in the internal arrangement of the lens motor 2 and helps to achieve miniaturization of the lens motor 2.

[0169] To facilitate understanding of the various directions, the first direction X, the second direction Y mentioned above, and the third direction Z mentioned below will be explained uniformly here.

[0170] Among them, any two of the first direction X, the second direction Y, and the third direction Z are perpendicular to each other. The first direction X can be understood as the optical axis O1 direction of the first lens group 13, or the moving direction of the lens mount 4 when focusing, the thickness direction of the lens motor 2, or the width direction A of the first magnetic component mentioned below.

[0171] The second direction Y and the third direction Z can be understood as two mutually perpendicular directions on a plane perpendicular to the optical axis O1. The second direction Y can be understood as the thickness direction of the magnetic chuck assembly 6, the thickness direction of the magnet group 61, and the thickness direction of the magnetic chuck group 62. It can also be understood as the direction in which the magnet group 61 and the magnetic chuck group 62 in the magnetic chuck assembly 6 are arranged opposite each other, the direction in which the side wall of the lens mount 4 where the magnet group 61 is located and the side wall of the outer shell 3 where the magnetic chuck group 62 is located are arranged opposite each other, the thickness direction B of the first magnetic chuck mentioned below, and parallel to the width or length direction of the lens motor 2. The third direction Z can be understood as the length direction of the magnetic chuck assembly 6, the length direction of the magnet group 61, and the length direction of the magnetic chuck group 62. It can also be understood as the length direction C of the first magnetic chuck mentioned below.

[0172] It should be noted that when the magnetic assembly 6 is disposed on one side of the lens motor 2 along its width direction (i.e., the side wall of the lens mount 4 where the magnet assembly 61 is located and the side wall of the housing 3 where the magnetic assembly 62 is located are disposed opposite each other in the width direction of the lens motor 2), the second direction Y is parallel to the width direction of the lens motor 2, and the third direction Z is parallel to the length direction of the lens motor 2. When the magnetic assembly 6 is disposed on one side of the lens motor 2 along its length direction (i.e., the side wall of the lens mount 4 where the magnet assembly 61 is located and the side wall of the housing 3 where the magnetic assembly 62 is located are disposed opposite each other in the length direction of the lens motor 2), the second direction Y is parallel to the length direction of the lens motor 2, and the third direction Z is parallel to the width direction of the lens motor 2.

[0173] The following detailed description, in conjunction with the accompanying drawings, illustrates the changes in the relative positions of the magnet group 61 and the magnetic attraction group 62 of the magnetic attraction assembly 6 during the focusing process of the lens mount 4.

[0174] Please see Figures 4a to 4d2 , Figure 4a This is a schematic diagram illustrating the control principle of the lens motor 2 in an embodiment of this application. Figures 4b1 to 4d2 The diagram shows the magnetic assembly 6 and the drive assembly 5 when the lens mount 4 is in the zero position, the first moving position, and the second moving position, respectively.

[0175] like Figure 3b and Figure 4b1 As shown, when the driving component 5 drives the lens mounting base 4 to move along the first direction X within the receiving space 36 of the housing 3, the magnet assembly 61 moves along the first direction X relative to the magnetic suction assembly 62 along with the lens mounting base 4.

[0176] Specifically, please refer to Figure 3bIn one possible implementation, the inner wall of the housing 3 includes an upper wall and a lower wall that are oppositely arranged in the first direction X (optical axis O1 direction), and the upper wall 33 and the lower wall 34 of the housing are sequentially arranged along the incident direction of light. The lens mount 4 includes a first surface 47 and a second surface 48 that are oppositely arranged in the first direction X, and the first surface 47 and the second surface 48 of the lens mount are sequentially arranged along the incident direction of light. The lens mount 4 is installed within the receiving space 36 of the housing 3 and is movable along the first direction X.

[0177] like Figure 3b , Figure 4b1 As shown, the lens mount 4 is located at the zero point position along the first direction X, and this zero point position is located between the first moving position and the second moving position. At this time, the distance between the center plane of the lens mount 4 along the first direction X and the first and second moving positions is equal. During focusing, the lens mount 4 moves along the first direction X under the drive of the drive assembly 5. Correspondingly, as... Figure 4b2 As shown, magnet assembly 61 is located at the zero point position.

[0178] like Figure 4c1 As shown, when the lens mount 4 moves upward along the first direction X (i.e., towards the light-incident side along the optical axis O1) from the zero position, the first surface 47 of the lens mount gradually approaches the upper wall surface 33 of the housing. When the first surface 47 of the lens mount contacts and abuts against the upper wall surface 33 of the housing, the lens mount 4 moves to the first moving position. Correspondingly, as... Figure 4c2 As shown, the magnet assembly 61 moves from the zero point position to its upper limit position along with the lens mount 4.

[0179] like Figure 4d1 As shown, when the lens mount 4 moves downward along the first direction X from the zero position (i.e., towards the light-emitting side along the optical axis O1), the second surface 48 of the lens mount gradually approaches the lower wall surface 34 of the housing. When the second surface 48 of the lens mount contacts and abuts against the lower wall surface 34 of the housing, the lens mount 4 moves to the second moving position. Correspondingly, as... Figure 4d2 As shown, the magnet assembly 61 moves from the zero point position to its lower limit position along with the lens mount 4.

[0180] Those skilled in the art will understand that during the entire movement, the magnet assembly 61 fixed to the lens mount 4 will move upward (i.e., towards the light-incident side along the optical axis O1) or downward (i.e., towards the light-outceasing side along the optical axis O1) along the first direction X. The coil 51 and magnetic attraction assembly 62, corresponding to the magnet assembly 61, are fixedly mounted on the housing 3, and their positions do not change. In some other possible implementations, the housing 3 is provided with a limiting or other positioning structure to limit the lens mount 4 in the first direction X. In this case, when the lens mount 4 moves to the first moving position, there is still a gap between the first surface 47 of the lens mount and the upper wall surface 33 of the housing, i.e., they are not in contact; and / or, when the lens mount 4 moves to the second moving position, there is still a gap between the second surface 48 of the lens mount and the lower wall surface 34 of the housing, i.e., they are not in contact. This application embodiment does not limit this.

[0181] In this embodiment, the maximum range of motion is defined by the contact between the first surface 47 and the second surface of the lens mount and the upper wall surface 33 and the lower wall surface of the housing, providing a clear and reliable mechanical limit for the focusing stroke. Setting the zero point at the center of the two mechanical limit points creates a symmetrical movement stroke. This layout facilitates symmetry in the mechanical design, reduces performance differences in different focusing directions, and keeps the relative positions and interactions between the magnet assembly 61, the magnetic attraction assembly 62, and the coil 51 controllable. This allows for algorithmic compensation and control, ensuring the accuracy, reliability, and stability of the lens motor 2 throughout the entire focusing stroke.

[0182] Those skilled in the art will understand that the force between the magnetic attraction group 62 and the magnet group 61 includes not only the magnetic attraction force in the first direction X, but also the force when the center planes of the magnetic attraction group 62 and the magnet group 61 are relatively offset in the first direction X, such as... Figure 4c2 and Figure 4d2 As shown, a magnetic restoring force is also generated between the magnetic assemblies 62 and 61 in the first direction X (i.e., the optical axis O1 direction). When the direction of movement of the magnet assembly 61 is opposite to the direction of the magnetic restoring force, the magnetic restoring force will hinder the movement of the magnet assembly 61, and thus hinder the movement of the lens mount 4. The magnetic assemblies 6 of two reference designs are described in detail below.

[0183] like Figure 5a and Figure 5b As shown, in one reference design, the magnetic assembly 62' includes a first magnetic element 63'. Combined with... Figure 5b The first magnetic accumulator 63' is a rectangular sheet structure. Figure 5c The simulation analysis curve shows the change of magnetic attraction restoring force between the first magnetic attraction element 63' and the magnet group 61' as a function of displacement.

[0184] Combination Figure 5cAnalysis shows that in this reference design, the first magnetic chuck 63' and the magnet assembly 61' are positioned opposite each other. During autofocus, when the lens mount 4' is at its zero point relative to the housing 3', the relative movement distance of the magnet assembly 61' is zero. The relative movement distance of the magnet assembly 61' is set to positive when it moves upward along the optical axis O1, and negative when it moves downward along the optical axis O1. The magnetic restoring force applied by the first magnetic chuck 63' to the magnet assembly 61' is positive when it is upward along the first direction X; and negative when it is negative when it is downward along the first direction X. (The rest of the text is omitted as it is not directly related to the preceding analysis.) Figure 6b , Figure 8d , Figure 14a Figure 16a Figure 18a and Figure 18b The relative movement distance of the magnet assembly 61, the first magnetic attractor 63, the second magnetic attractor 64, and the magnetic attraction restoring force applied by the magnetic attractor assembly 62 to the magnet assembly 61 can be understood in the same way, and will not be elaborated further.

[0185] Specifically, when the magnet assembly 61' moves upward along the first direction X, as the absolute value of the relative movement distance of the magnet assembly 61' increases (i.e., as the magnet assembly 61' gradually moves away from the zero point position), the absolute value of the magnetic restoring force also increases, and the direction of the magnetic restoring force is downward, opposite to the direction of movement of the magnet assembly 61'. At this time, the magnetic restoring force hinders the upward movement of the magnet assembly 61'. When the magnet assembly 61' moves downward along the first direction X, as the absolute value of the relative movement distance of the magnet assembly 61' increases (i.e., as the magnet assembly 61' gradually moves away from the zero point position), the absolute value of the magnetic restoring force increases, and the direction of the magnetic restoring force is upward, opposite to the direction of movement of the magnet assembly 61'. At this time, the magnetic restoring force hinders the downward movement of the magnet assembly 61'. Therefore, the farther the magnet assembly 61' deviates from the zero point position, the greater the magnetic restoring force experienced by the magnet assembly 61', and the magnetic restoring force hinders the movement of the magnet assembly 61', thereby hindering the movement of the lens mount 4'.

[0186] like Figure 6a and Figure 6b As shown, in another reference design, the first magnetic element 63” of the magnetic assembly 62' is an I-shaped sheet structure. Figure 6b The simulation analysis curve shows the change of magnetic attraction restoring force between the first magnetic attraction component 63” and the magnet assembly 61’ as a function of displacement.

[0187] Combination Figure 6bAnalysis shows that when the lens mount 4' is at the zero point, the magnetic restoring force on the magnet assembly 61' is a small positive value. As the magnet assembly 61' moves upward along the first direction X, the change in its magnetic restoring force exhibits the following characteristics: as the absolute value of the relative movement distance of the magnet assembly 61' increases (i.e., as the magnet assembly 61' gradually moves away from the zero point), the magnetic restoring force does not increase monotonically, but gradually decreases from an initial small positive value until it reaches zero; after crossing the zero point, the magnetic restoring force becomes negative, its absolute value gradually increases, and after increasing for a certain distance, it gradually decreases again. The absolute value of the magnetic restoring force undergoes a process of first decreasing, then increasing, and then decreasing again. At the same time, the direction of the magnetic restoring force also changes: in the initial stage, the direction of the magnetic restoring force is upward, and at this time the direction of the magnetic restoring force is the same as the direction of movement of the magnet assembly 61'; after crossing the zero point, the direction of the magnetic restoring force becomes downward, and at this time the direction of the magnetic restoring force is opposite to the direction of movement of the magnet assembly 61', and the magnetic restoring force hinders the upward movement of the magnet assembly 61'.

[0188] When the magnet assembly 61' moves downward along the first direction X, as the absolute value of the relative movement distance of the magnet assembly 61' increases (i.e., as the magnet assembly 61' gradually moves away from the zero point position), the absolute value of the magnetic restoring force first increases and then decreases. Furthermore, the direction of the magnetic restoring force is upward, opposite to the direction of movement of the magnet assembly 61'. At this point, the magnetic restoring force hinders the downward movement of the magnet assembly 61'. Therefore, within a certain range, the farther the magnet assembly 61' deviates from the zero point position, the greater the magnetic restoring force experienced by the magnet assembly 61, and the magnetic restoring force hinders the movement of the magnet assembly 61'.

[0189] In summary, in the magnetic assembly structure of the aforementioned reference design, to overcome the magnetic restoring force generated by the magnetic attraction group 62' and the magnet group 61' and ensure the movement stroke of the lens mount 4' during focusing, the drive assembly needs to output greater drive power. This not only increases system energy consumption and reduces the response speed of the lens motor, but also, as the lens mount 4' approaches the end of its stroke, the magnetic restoring force increases, affecting the focusing accuracy of the lens motor.

[0190] Furthermore, the magnetic attraction force and magnetic return force applied by the first magnetic member 63' to the magnet assembly 61' increase or decrease simultaneously. For example, increasing the volume of the first magnetic member 63' increases the magnetic attraction force, improving the stability of the lens mount 4' in the optical axis O1 direction. However, it also simultaneously increases the magnetic return force. When the direction of this magnetic return force is opposite to the direction of movement of the lens mount 4' in the optical axis O1 direction, it leads to increased resistance and power consumption for the lens mount 4'. Conversely, decreasing the volume of the first magnetic member 63' decreases the magnetic return force, reducing the resistance and power consumption for the lens mount 4'. However, it also simultaneously decreases the magnetic attraction force, resulting in reduced stability of the lens mount 4' in the optical axis O1 direction. As can be seen from the above, the magnetic components of the two reference designs are difficult to improve the magnetic attraction force while reducing the magnetic return force, making it impossible to simultaneously achieve high motion stability and low system power consumption during autofocus.

[0191] Based on this, the embodiments of this application have made corresponding improvements to the structure of the magnetic attraction component. By designing a "hole" structure on the first magnetic attraction element of the magnetic attraction component, and by setting the structural parameters and arrangement position of the "hole", the magnetic attraction restoring force of the first magnetic attraction element is reduced or the direction of the magnetic attraction restoring force of the first magnetic attraction element is changed. When the magnet assembly moves along the first direction X, the total magnetic attraction restoring force borne by the magnet assembly in the first direction X (i.e., the direction of the optical axis O1) is reduced. Without weakening the magnetic attraction force of the magnetic attraction assembly on the magnet assembly in the second direction Y, the harmful magnetic attraction restoring force along the optical axis O1 is reduced, thereby achieving the purpose of reducing power consumption. Thus, while increasing the magnetic attraction force, the magnetic attraction restoring force can be reduced, thereby simultaneously achieving high motion stability and low system power consumption during autofocus.

[0192] The following section provides a detailed description of the specific structure and working principle of the magnetic attraction component 6, in conjunction with the accompanying drawings.

[0193] Please see Figures 7a to 7e , Figures 7a to 7d These are schematic diagrams of the magnetic suction component 6 and the drive component 5 of the lens motor 2 from different angles according to embodiments of this application. Figure 7e This is a front view schematic diagram of the coil 51 and the second magnetic member 64 in another possible implementation of the lens motor 2 in the embodiments of this application.

[0194] like Figure 7a As shown, and in combination Figure 4b1 and Figure 4b2Understandably, in one possible implementation, the magnetic assemblies 62 include a first magnetic member 63. The first magnetic member 63 has a first outer surface 635 and a second outer surface 636 disposed opposite each other along its thickness direction. The first outer surface 635 of the first magnetic member is disposed opposite to the magnet assembly 61 in the second direction Y, and the second outer surface 636 is disposed opposite to the magnet assembly 61. The thickness direction B of the first magnetic member is parallel to the second direction Y, and the width direction A of the first magnetic member is parallel to the first direction X. The first outer surface 635 of the first magnetic member is disposed adjacent to the magnet assembly 61 along the second direction Y, and the second outer surface 636 of the first magnetic member is disposed away from the magnet assembly 61 along the second direction Y.

[0195] Furthermore, the first magnetic attractor 63 is provided with a hole 65, and the inner wall surface of the hole 65 is spaced apart from the outer periphery of the first magnetic attractor 63. That is to say, the hole 65 is located inside the first magnetic attractor 63, that is, inside the outer periphery of the first magnetic attractor 63. It can also be understood that the hole 65 is surrounded by the material of the first magnetic attractor 63.

[0196] Furthermore, such as Figure 7a As shown, and in combination Figure 4b2 It is understood that, in one possible implementation, the hole 65 is configured as a through hole 651 extending from the first outer surface to the second outer surface, wherein the hole 65 penetrates the first magnetic member 63 along the thickness direction B. It should be noted that the hole 65 may extend in a direction parallel to the thickness direction B of the first magnetic member, or in other directions, such as extending in a direction inclined to the thickness direction B of the first magnetic member; the hole 65 may extend in a straight line, or in a curve, or in both a curve and a straight line, and this application embodiment does not limit this.

[0197] The magnetic chuck assembly 62 also includes a second magnetic chuck 64. The first magnetic chuck 63 and the second magnetic chuck 64 are two independent structures. In the second direction Y, the second magnetic chuck 64 is disposed opposite to the first magnetic chuck 63 and opposite to the magnet assembly 61. Both the first magnetic chuck 63 and the magnet assembly 61, and the second magnetic chuck 64 and the magnet assembly 61, have magnetic attraction forces in the second direction Y, so that the corresponding sidewalls of the lens mount 4 and the housing 3 are attracted to each other in the second direction Y. Furthermore, the magnetic restoring forces exerted by the first magnetic chuck 63 and the second magnetic chuck 64 on the magnet assembly 61 in the first direction X are in opposite directions.

[0198] The magnetic assembly 62 includes a first magnetic element 63 and a second magnetic element 64. The first magnetic element 63 has a hole 65, which is configured as a through hole 651. Both the first magnetic element 63 and the second magnetic element 64 generate an interaction force with the magnet assembly 61. The force exerted by the first magnetic element 63 on the magnet assembly 61 includes a magnetic attraction force in the second direction Y and a magnetic restoring force in the first direction X. Similarly, the force exerted by the second magnetic element 64 on the magnet assembly 61 includes a magnetic attraction force in the second direction Y and a magnetic restoring force in the first direction X. The magnetic attraction forces generated by the two magnetic elements in the second direction Y are in the same direction and are superimposed. That is, the magnetic attraction force exerted by the magnetic assembly 62 on the magnet assembly 61 in the second direction Y is greater than that of a single solid magnetic element (e.g., ...). Figure 5b The rectangular magnetic chuck shown and Figure 6a The magnetic attraction force generated by the I-shaped magnetic chuck (shown) increases, causing the lens mount 4 to fit snugly against the guide rail 45 on the housing 3. This better confines the lens mount 4 within the corresponding movement track of the housing 3, improving the stability of the lens mount 4's movement in the first direction X during focusing. In the first direction X, the magnetic restoring forces generated by the first magnetic chuck 63 and the second magnetic chuck 64 are opposite in direction and cancel each other out, reducing the resultant force on the magnet assembly 61 in the first direction X. That is, the magnetic restoring force exerted by the magnetic chuck assembly 62 on the magnet assembly 61 in the first direction X is less than that of a single solid magnetic chuck (e.g., ...). Figure 5b The rectangular magnetic chuck shown and Figure 6a The magnetic restoring force generated by the I-shaped magnetic chuck shown is reduced, thereby reducing the magnetic restoring force experienced by the lens mount 4 during movement. When the direction of the magnetic restoring force is opposite to the direction of movement of the lens mount 4, the resistance experienced by the lens mount 4 is reduced, which in turn reduces the driving force required during focusing and lowers the driving power consumption.

[0199] Therefore, the lens motor 2 provided in this application embodiment, through the design of the first magnetic member 63 and the second magnetic member 64 in the magnetic attraction assembly 6, has a hole 65 formed on the first magnetic member 63, so that the magnetic attraction restoring forces generated by the first magnetic member 63 and the second magnetic member 64 in the first direction X (optical axis O1 direction) are opposite in direction and cancel each other out, thereby reducing the magnetic attraction restoring force on the magnet assembly 61. The drive assembly 5 does not need to output excessive power to overcome the additional magnetic attraction restoring force, thereby effectively reducing the overall operating power consumption of the lens motor 2. The magnetic attraction forces generated by the first magnetic member 63 and the second magnetic member 64 in the second direction Y are in the same direction and superimposed on each other, forming a large magnetic attraction force. This magnetic attraction force ensures that the lens mounting base 4 and the guide rail 45 always maintain a tight fit, effectively suppressing radial offset and shaking caused during movement or when subjected to external impact or vibration, and enhancing the stability and reliability of the lens motor 2 operation. Furthermore, the magnetic design in this application embodiment, which combines the first magnetic element 63 and the second magnetic element 64, can decouple complex design requirements, thereby improving the flexibility and variability of the design scheme.

[0200] In other possible implementations, the hole 65 on the first magnetic accumulator 63 can be set as a blind hole 652 structure that does not penetrate the thickness direction of the first magnetic accumulator 63. This implementation will be elaborated in detail below, and will not be repeated here.

[0201] It should be noted that, as Figure 4b2 and Figure 7a As shown, the structural form of the first magnetic attractor 63 is not limited. In one possible implementation, the first magnetic attractor 63 is configured as a sheet-like structure. In other possible implementations, the first magnetic attractor 63 may also be configured as other structural forms, such as a block-like structure, which is not limited in this embodiment.

[0202] Furthermore, the shape of the area enclosed by the outer periphery of the first magnetic member 63 is not limited, for example, a rectangle (see...). Figure 7a Regular shapes such as I-shape, polygon, and circle can be used, but irregular shapes can also be used. This application does not limit this.

[0203] like Figure 4b2 , Figure 7a and Figure 7b As shown, the structure of the second magnetic member 64 is not limited. In one possible implementation, the second magnetic member 64 is configured as a sheet-like structure. In other possible implementations, the second magnetic member 64 may also be configured as other structural forms, such as a block-like structure, which is not limited in this embodiment.

[0204] Furthermore, the shape of the area enclosed by the outer periphery of the second magnetic member 64 is not limited, for example, a rectangle (see...). Figure 7a and Figure 7b Regular shapes such as I-shape, polygon, and circle can be used, but irregular shapes can also be used. This application does not limit this.

[0205] Furthermore, such as Figure 4b2 , Figure 7a and Figure 7b As shown, the second magnetic attractor 64 can be a solid structure (it may or may not have the process hole 65; please refer to the description of the process hole 65 below for details) or a hollow structure. In this case, the second magnetic attractor 64 also has a hole (not shown in the figure). It is sufficient that the magnetic attraction force of the magnetic attractor group 62 composed of the first magnetic attractor 63 and the second magnetic attractor 64 acting on the magnet group 61 in the second direction Y is increased or basically equal to the magnetic attraction force generated by a single solid magnetic attractor, and the magnetic attraction restoring force acting on the magnet group 61 in the first direction X is decreased compared to the magnetic attraction restoring force generated by a single solid magnetic attractor (i.e., the magnetic attraction restoring force of the first magnetic attractor 63 with the hole 65 acting on the magnet group 61 is opposite in direction to the magnetic attraction restoring force of the second magnetic attractor 64 with the hole 65 acting on the magnet group 61, and they cancel each other out). This application embodiment does not impose any limitations on this. In one example, the second magnetic attractor 64 is set as a solid sheet-like structure or a block-like structure.

[0206] Furthermore, the materials of the first magnetic attractor 63 and the second magnetic attractor 64 are not limited, as long as they can generate a magnetic attraction with the magnet assembly 61. In one possible implementation, the first magnetic attractor 63 and the second magnetic attractor 64 are made of a metallic material that can be attracted by the magnet 610. For example, the materials of the first magnetic attractor 63 and the second magnetic attractor 64 can be metallic materials such as iron, nickel, or cobalt that can be attracted by the magnet 610. Moreover, the structural form of the magnet 610 in the magnet assembly 61 is not limited; for example, the magnet 610 can be a magnetite or a permanent magnet. Furthermore, the arrangement of the first magnetic 63, the second magnetic 64, and the magnet group 61 in the second direction Y is not limited, as long as the magnetic attraction restoring force of the first magnetic 63 can cancel out at least part of the magnetic attraction restoring force of the second magnetic 64, so that the magnetic attraction restoring force of the magnetic attraction group 62 composed of the first magnetic 63 and the second magnetic 64 acting on the magnet group 61 in the first direction X is reduced compared to the magnetic attraction restoring force generated by a single solid magnetic 63.

[0207] In one possible implementation, such as Figure 7a As shown, and in combination Figure 4b1 and Figure 4b2It is understood that, in the second direction Y, the second magnetic attractor 64 is located between the first magnetic attractor 63 and the magnet assembly 61. A portion or all of the hole 65 is positioned opposite the second magnetic attractor 64. Along the second direction Y, the first magnetic attractor 63 and the second magnetic attractor 64 are located on the same side of the magnet assembly 61, and the first magnetic attractor 63, the second magnetic attractor 64, and the magnet assembly 61 are sequentially arranged along the second direction Y.

[0208] The relative position of the second magnetic component and the hole is not limited, such as Figure 7a As shown, in one possible implementation, a portion of the hole 65 is positioned opposite to the second magnetic member 64 along the second direction Y, or the entire area of ​​the hole 65 is positioned opposite to the second magnetic member 64. It can also be understood that, projected onto a plane perpendicular to the second direction Y, a portion or all of the hole overlaps with the second magnetic member. In other possible implementations, the hole 65 and the second magnetic member 64 may be staggered along the second direction Y, or it can be understood that, projected onto a plane perpendicular to the second direction Y, the hole 65 and the second magnetic member 64 do not overlap (e.g., spaced apart or arranged sequentially). This application embodiment does not impose any limitations on this.

[0209] Furthermore, the specific location of the second magnetic element 64 is not limited. For example... Figures 7b-7d As shown, in one possible implementation, in the second direction Y, the coil 51 is located between the first magnetic member 63 and the magnet assembly 61, and at least a portion of the second magnetic member 64 is located within the hollow region enclosed by the coil 51. That is, the second magnetic member 64 is entirely embedded within the hollow region of the coil 51, or a portion of the second magnetic member 64 is located within the hollow region of the coil 51, and another portion is located between the coil 51 and the first magnetic member 63. This arrangement, where at least a portion of the second magnetic member 64 is embedded within the hollow region of the coil 51, can improve the integration of the lens motor 2, allowing the coil 51 to provide a driving magnetic field while also efficiently utilizing its hollow region, thus contributing to the compact design of the lens motor 2 and improving its space utilization. In other possible implementations, the second magnetic member 64 may also be completely located between the first magnetic member 63 and the coil 51; this embodiment does not limit this.

[0210] Furthermore, the relative position of the second magnetic element 64 and the coil 51 is not limited. (Combined with...) Figure 7b In one possible implementation, the second magnetic attractor 64 can be located at the middle of the hollow region of the coil 51 along the length of the coil 51. In other possible implementations, such as... Figure 7eAs shown, the second magnetic attractor 64 can be located in the hollow region of the coil 51 and eccentrically arranged along the length of the coil 51 (i.e., off-center), thereby strengthening the magnetic attraction on one side. The length direction of the coil 51 is parallel to the third direction Z. The specific placement of the second magnetic attractor 64 in the hollow region of the coil 51 in the third direction Z is designed according to actual needs, and this embodiment does not limit this.

[0211] In other possible implementations, in the second direction Y, the first magnetic member 63 may be located between the second magnetic member 64 and the magnet group 61, which will be described in detail below.

[0212] In one possible implementation, the height of the first magnetic member 63 in the first direction X is within the range of motion covered by the magnet assembly 61 in the first direction X. Figures 4b1-4d2 The magnet assembly 61 includes an upper edge and a lower edge that are opposite to each other in the first direction X. The outer periphery of the first magnetic attractor 63 includes an upper edge and a lower edge that are opposite to each other in the first direction X. The second magnetic attractor 64 includes an upper edge and a lower edge that are opposite to each other in the first direction X.

[0213] like Figures 4b1-4d1 As shown, in one possible implementation, when the lens mount 4 is in the first movable position, in the first direction X, the upper edge 611 of the magnet assembly is located on the side of the upper edge 631 of the first magnetic member away from the lower edge, or between the upper and lower edges; or, the upper edge 611 of the magnet assembly is aligned with the upper edge 631 of the first magnetic member. When the lens mount 4 is in the second movable position, in the first direction X, the lower edge 612 of the magnet assembly is located on the side of the lower edge 632 of the first magnetic member away from the upper edge, or between the lower and upper edges; or, the lower edge 612 of the magnet assembly is aligned with the lower edge 632 of the first magnetic member.

[0214] Specifically, in one possible implementation, such as Figure 4c1 and Figure 4c2 As shown, when the lens mount 4 is in the first movable position, the upper edge 611 of the magnet assembly is aligned with the upper edge 631 of the first magnetic member, or located on the side of the upper edge 631 of the first magnetic member away from the lower edge (i.e., the upper edge 611 of the magnet assembly extends beyond the upper edge 631 of the first magnetic member), and, as Figure 4d1 and Figure 4d2As shown, when the lens mount 4 is in the second movable position, the lower edge 612 of the magnet assembly is aligned with the lower edge 632 of the first magnetic chuck, or located on the side of the lower edge 632 of the first magnetic chuck away from the upper edge (i.e., the lower edge 612 of the magnet assembly extends beyond the lower edge 632 of the first magnetic chuck). Alternatively, it can be understood that during the movement of the lens mount 4 along the first direction X, the first magnetic chuck 63 is within the space covered by the movement range of the magnet assembly 61 in the first direction X. This design optimizes the structural layout by making the height of the first magnetic chuck 63 in the first direction X less than the movement range of the magnet assembly 61 in the first direction X. This improves the space utilization inside the lens motor 2 housing 3 and avoids additionally increasing the volume of the housing 3 due to the installation of the first magnetic chuck 63, thus facilitating the miniaturization and weight reduction of the lens motor 2.

[0215] In this embodiment, the ratio of the height of the hole 65 in the first direction X to the height of the first magnetic member 63 in the first direction X is not limited, nor is the relative size of the area enclosed by the end of the hole 65 near the magnet assembly 61 and the area of ​​the region enclosed by the outer edge of the first outer surface of the first magnetic member 63 near the magnet assembly 61 limited. These ratios can be reasonably set according to actual needs, as long as the magnetic restoring force of the magnetic assembly 62 on the magnet assembly 61 is reduced. The following detailed description is provided in conjunction with the accompanying drawings.

[0216] refer to Figure 8a1 and Figure 8a2 In one possible implementation, the height of the first magnetic chuck 63 in the first direction X is H, and the height of the hole 65 in the first direction X is h, where H and h satisfy: 1 / 4 ≤ h / H ≤ 3 / 5. For example, h / H can be 1 / 4, 1 / 3, 2 / 5, 1 / 2, 3 / 5, etc. That is, the height ratio of the hole 65 to the height of the first magnetic chuck 63 is in the range of 1 / 4 to 3 / 5.

[0217] refer to Figure 8a1 and Figure 8a2 In one possible implementation, the outer edge of the first outer surface 635 of the first magnetic attractor forms a first region 637, the area of ​​the first region 637 being S1, and the area of ​​the first end 653 of the hole 65 being S2. The first end 653 of the hole 65 is the end of the hole 65 that is close to the first outer surface along its depth direction. S1 and S2 satisfy: 65% ≤ (S1-S2) / S1 ≤ 95%. The depth direction of the hole 65 can be understood as the extension direction of the hole 65 mentioned above.

[0218] When hole 65 is set as through hole 651, and the first end 653 of hole 65 is located (in a close proximity) on the first outer surface 635 of the first magnetic member (i.e., the surface of the first magnetic member 63 facing the magnet assembly 61), the area S1 of the first region 637 can be understood as the sum of the area of ​​the first outer surface 635 of the first magnetic member and the area of ​​the first end 653 of hole 65. (S1-S2) can be understood as the area of ​​the first outer surface. At this time, (S1-S2) / S1 can be understood as the ratio of the area of ​​the first magnetic member 63 facing the magnet assembly 61 to the area of ​​the overall structure formed by the first magnetic member 63 and hole 65 facing the magnet assembly 61. It can also be understood as the ratio of the area of ​​the first magnetic member 63 with hole 65 facing the magnet assembly 61 to the area of ​​the first magnetic member 63 without hole 65 facing the magnet assembly 61. When the hole 65 meets the above height ratio and area ratio conditions, the direction of the magnetic restoring force generated by the first magnetic chuck 63 is opposite to the direction of the magnetic restoring force generated by the second magnetic chuck 64. This allows the magnetic restoring forces of the first magnetic chuck 63 and the second magnetic chuck 64 to cancel each other out, thereby reducing the net magnetic restoring force experienced by the magnet assembly 61 during its movement. This reduces the magnetic restoring force that the drive assembly 5 needs to overcome, improving the system energy efficiency and focusing response speed of the lens motor 2.

[0219] See other possible implementations. Figure 15a When the hole 65 on the first magnetic attractor 63 is a blind hole 652 structure, and the first end 653 of the hole 65 is located on the first outer surface 635 of the first magnetic attractor, S1 and (S1-S2) can be understood with reference to the description above. The magnetic attractor assembly 6 only includes the first magnetic attractor 63, which can effectively reduce the magnetic attraction restoring force generated by the first magnetic attractor 63 on the magnet assembly 61, thereby reducing the driving power consumption. The magnetic attraction restoring force applied by the magnetic attractor assembly 62 to the magnet assembly 61 is reduced, thereby meeting the low power consumption requirement of the lens motor 2 during focusing.

[0220] See Figure 15d The hole 65 on the first magnetic accumulator 63 is a blind hole 652 structure. The first end 653 of the hole 65 is spaced apart from the first outer surface 635 of the first magnetic accumulator in the second direction Y. When the second end of the hole 65 is located on the second outer surface 636 of the first magnetic accumulator, the area S1 of the first region 637 can be understood as the area of ​​the first outer surface 635 of the first magnetic accumulator. (S1-S2) can be understood as the difference between the area of ​​the first outer surface and the area of ​​the first end 653 of the hole 65.

[0221] Furthermore, in one possible implementation, H and h satisfy: 1 / 3 ≤ h / H ≤ 1 / 2. S1 and S2 satisfy: 80% ≤ (S1-S2) / S1 ≤ 90%.

[0222] In other possible implementations, the height ratio h / H between the hole 65 and the first magnetic attractor 63 can be less than 1 / 4 or greater than 3 / 5, and the area ratio (S1-S2) / S1 can be less than 65% or greater than 95%. This application embodiment does not limit this.

[0223] like Figure 8b As shown, in one possible implementation, the height H of the first magnetic accumulator 63 in the first direction X and the height h of the hole 65 in the first direction X decrease synchronously, but still satisfy the requirement that 1 / 4 ≤ h / H ≤ 3 / 5.

[0224] like Figure 8c As shown, in one possible implementation, the height H of the first magnetic attractor 63 in the first direction X and the height h of the hole 65 in the first direction X increase synchronously, but still satisfy the requirement that 1 / 4 ≤ h / H ≤ 3 / 5.

[0225] The feasibility of the above implementation method is verified through simulation analysis. (Reference) Figure 8d and Figure 8e The magnetic assemblies 62 include a first magnetic assembly 63 and a second magnetic assembly 64. The hole 65 in the first magnetic assembly 63 is a through hole 651. Figure 8d The simulation analysis curves show the magnetic attraction restoring forces generated by the first magnetic attractor 63 and the second magnetic attractor 64 on the magnet assembly 61, and the simulation analysis curves show the resultant force of the magnetic attraction restoring forces generated by the first magnetic attractor 63 and the second magnetic attractor 64 on the magnet assembly 61. Figure 8e Simulation analysis curves of the magnetic attraction forces generated by the first magnetic attractor 63 and the second magnetic attractor 64 on the magnet assembly 61, and simulation analysis curves of the resultant force of the magnetic attraction forces generated by the first magnetic attractor 63 and the second magnetic attractor 64 on the magnet assembly 61 are provided. It is defined that when the magnet assembly 61 moves upward along the first direction X, the relative movement distance of the magnet assembly 61 is positive; correspondingly, when the magnet assembly 61 moves downward along the first direction X, the relative movement distance of the magnet assembly 61 is negative. When the direction of the magnetic restoring force applied by the first magnetic attractor 63 to the magnet assembly 61 is upward along the first direction X, the magnetic restoring force is positive; correspondingly, when the direction of the magnetic restoring force applied by the first magnetic attractor 63 to the magnet assembly 61 is downward along the first direction X, the magnetic restoring force is negative. The magnetic restoring force of the second magnetic attractor 64, and the resultant force of the magnetic restoring forces of the first magnetic attractor 63 and the second magnetic attractor 64, can be understood by referring to the definition of the magnetic restoring force of the first magnetic attractor 63.

[0226] like Figure 8dAs shown, when the magnet assembly 61 moves upward along the first direction X (optical axis O1), the magnetic attraction and restoring forces generated by the first magnetic attractor 63 and the second magnetic attractor 64 on the magnet assembly 61 exhibit specific changing patterns and interactions: the magnetic attraction and restoring force generated by the first magnetic attractor 63 on the magnet assembly 61 generally increases, and this force is positive, with its direction being upward along the first direction X; the magnetic attraction and restoring force generated by the second magnetic attractor 64 on the magnet assembly 61 also generally increases, but this force is negative, with its direction being downward along the first direction X. Since the directions of the magnetic attraction and restoring forces generated by the two are opposite, the absolute value of the resultant magnetic attraction and restoring forces acting on the magnet assembly 61 by the first magnetic attractor 63 and the second magnetic attractor 64 is significantly reduced compared to the absolute value of the magnetic attraction and restoring forces generated by the first magnetic attractor 63 or the second magnetic attractor 64 individually.

[0227] When the magnet assembly 61 moves downward along the first direction X (optical axis O1), the magnetic restoring forces generated by the first magnetic chuck 63 and the second magnetic chuck 64 on the magnet assembly 61 also exhibit specific changing patterns and interactions: the magnetic restoring force generated by the first magnetic chuck 63 on the magnet assembly 61 generally increases, and this force is negative, with its direction being downward along the first direction X; the magnetic restoring force generated by the second magnetic chuck 64 on the magnet assembly 61 also generally increases, but this force is positive, with its direction being upward along the first direction X. The magnetic restoring forces generated by the two are in opposite directions. Therefore, the absolute value of the resultant magnetic restoring force of the first magnetic chuck 63 and the second magnetic chuck 64 acting on the magnet assembly 61 is significantly reduced compared to the absolute value of the magnetic restoring force generated by the first magnetic chuck 63 or the second magnetic chuck 64 alone.

[0228] like Figure 8e As shown, when the magnet assembly 61 moves along the first direction X (optical axis O1), whether moving upwards or downwards, the curves of the magnetic attraction force generated by the first magnetic member 63 and the second magnetic member 64 on the magnet assembly 61 approach a straight line. This indicates that in the second direction Y, the magnitude of the magnetic attraction force generated by the first magnetic member 63 and the second magnetic member 64 on the magnet assembly 61 is stable and does not change significantly with the movement of the magnet assembly 61 in the first direction X. The resultant force of the magnetic attraction forces acting on the magnet assembly 61 by the first magnetic member 63 and the second magnetic member 64 is the sum of the magnetic attraction forces generated by the two. Since the directions of these two magnetic attraction forces are the same, the resultant force is enhanced, and the first magnetic member 63 and the second magnetic member 64 together provide a large and stable attraction force for the magnet assembly 61.

[0229] In summary, throughout the focusing stroke, the combined magnetic attraction force of the first magnetic element 63 and the second magnetic element 64 in the second direction Y is reduced, thus decreasing the total magnetic attraction force that the drive assembly 5 needs to overcome. This contributes to reducing the energy consumption of the lens motor 2 system and improving the focusing response speed. The combined magnetic attraction force of the first magnetic element 63 and the second magnetic element 64 in the first direction X increases and remains stable, ensuring a tight fit between the lens mount 4 and the guide rail 45. This effectively suppresses wobbling and offset during movement, ensuring high stability and improving the reliability of the lens motor 2. This provides a mechanical structural foundation for the camera module 1 to obtain high-definition images.

[0230] Combination Figure 8d Analysis reveals that the magnetic attraction forces exerted by the first magnetic element 63 and the second magnetic element 64 on the magnet assembly 61 sometimes result in a net force of zero. When this net force is zero, the magnet assembly 61 is located at the zero point or deviates from the zero point by a certain distance. Furthermore, as... Figure 9a As shown, in one possible implementation, when the lens mount 4 is located in the middle position between the first moving position and the second moving position (i.e., the zero point position), the center surface of the magnet assembly 61 in the first direction X is aligned with the center surface of the first magnetic suction member 63 in the first direction X, or, is set at a preset first distance threshold interval.

[0231] like Figure 8d As shown, when the magnet assembly 61 is within a certain displacement range, the magnetic restoring force of the first magnetic chuck 63 on the magnet assembly 61 is not zero, but the resultant force of the magnetic restoring forces of the first magnetic chuck 63 and the second magnetic chuck 64 is zero. When the magnet assembly 61 moves downward along the first direction X to a certain position (i.e., the intersection point in the figure), the magnetic restoring forces of the first magnetic chuck 63 and the second magnetic chuck 64 on the magnet assembly 61 will become zero. Therefore, in actual production, such as Figure 9b and Figure 9c As shown, in other possible implementations, the center plane of the magnet assembly 61 may be offset from the center plane of the first magnetic attractor 63 by a certain distance. This distance is included within a first distance threshold range, and the magnitude of this distance is determined according to the actual situation; this application embodiment does not impose any limitations on it.

[0232] Similarly, as Figure 9a As shown, and in combination Figure 8d Analysis reveals that in one possible implementation, when the magnet assembly 61 includes the second magnetic chuck 64, the center surface of the magnet assembly 61 in the first direction X is aligned with the center surface of the second magnetic chuck 64 in the first direction X, or, the distance is set at a preset second distance threshold interval, and the center surface of the second magnetic chuck 64 in the first direction X is aligned with the center surface of the first magnetic chuck 63 in the first direction X, or, the distance is set at a preset third distance threshold interval.

[0233] like Figure 8dAs shown, when the magnet assembly 61 is within a certain displacement range, the magnetic restoring force of the second magnetic chuck 64 on the magnet assembly 61 is not zero, but the resultant force of the magnetic restoring forces of the first magnetic chuck 63 and the second magnetic chuck 64 is zero. When the magnet assembly 61 moves downward along the first direction X to a certain position (i.e., the intersection point in the figure), the magnetic restoring force of the first magnetic chuck 63 and the second magnetic chuck 64 on the magnet assembly 61 will become zero. Therefore, in actual production, Figure 10a and Figure 10b As shown, in other possible implementations, the center plane of the magnet assembly 61 and the center plane of the second magnetic chuck 64 may be offset by a certain distance. This distance is included within the range of a second distance threshold, and the magnitude of this distance is determined according to the actual situation; this embodiment does not impose any limitation on it. Those skilled in the art will understand that, due to manufacturing errors and other issues, when the magnetic restoring forces of both the first magnetic chuck 63 and the second magnetic chuck 64 are zero, there will also be a certain distance offset between the center plane of the first magnetic chuck 63 and the center plane of the second magnetic chuck 64. This distance is included within the range of a third distance threshold, and the magnitude of this distance is determined according to the actual situation; this embodiment does not impose any limitation on it.

[0234] In the first direction X, the embodiment of this application does not limit the position of the hole 65 relative to the first magnetic attractor 63, and can be reasonably set according to actual needs, as long as the magnetic attraction restoring force of the magnetic attractor group 62 on the magnet group 61 is reduced. The following is a detailed description in conjunction with the accompanying drawings.

[0235] refer to Figure 11a and Figure 11b and combined Figure 9a Understandably, in one possible implementation, the inner wall surface of the hole 65 includes an upper wall surface and a lower wall surface opposite to each other in the first direction X, and the outer periphery of the first magnetic member 63 includes an upper edge and a lower edge opposite to each other in the first direction X. In the first direction X, the upper edge 631 of the first magnetic member, the upper wall surface 654 of the hole, the lower wall surface 655 of the hole, and the lower edge 632 of the first magnetic member are sequentially spaced apart. The distance between the upper wall surface 654 of the hole and the upper edge 631 of the first magnetic member is d1, and the distance between the lower wall surface 655 of the hole and the upper edge 631 of the first magnetic member is d2. d1 / H is greater than or equal to 1 / 5, and d2 / H is greater than or equal to 1 / 5. In one example, d1 / H is between 24.83% and 43.48%, and d2 / H is between 24.83% and 43.48%.

[0236] The distance between the upper wall surface 654 and the lower wall surface 655 of the hole in the first direction X can be understood as the height of the hole 65 in the first direction X. The distance between the upper wall surface 654 of the hole and the upper edge 631 of the first magnetic attractor is the minimum distance. Similarly, the distance between the lower wall surface 655 of the hole and the upper edge 631 of the first magnetic attractor is the minimum distance.

[0237] The ratio of the distance between the upper wall surface 654 of the hole and the upper edge 631 of the first magnetic attractor to the height of the first magnetic attractor 63 satisfies d1 / H greater than or equal to 1 / 5, and the ratio of the distance between the lower wall surface 655 of the hole and the lower edge 632 of the first magnetic attractor to the height of the first magnetic attractor 63 satisfies d2 / H greater than or equal to 1 / 5. When the positional distribution of the hole 65 in the first direction X satisfies the above conditions, the magnetic attraction restoring forces generated by the first magnetic attractor 63 and the second magnetic attractor 64 can be opposite in direction to cancel each other out, thereby reducing the total magnetic attraction restoring force on the magnet assembly 61 and improving the system energy efficiency.

[0238] like Figure 11a As shown, in one possible implementation, the hole 65 is positioned upward relative to the center plane of the first magnetic member 63 in the width direction by a certain distance, but still satisfies the requirement that d1 / H is greater than or equal to 1 / 5.

[0239] like Figure 11b As shown, in one possible implementation, the hole 65 is positioned in the first direction X, offset downwards from the center plane of the first magnetic member 63 in the width direction by a certain distance, but still satisfies the requirement that d2 / H is greater than or equal to 1 / 5.

[0240] Those skilled in the art will understand that the position of the hole 65 relative to the first magnetic attractor 63 in the first direction X is not absolutely centered, but can be offset upward or downward within a reasonable range. The offset distance can be adjusted according to actual needs, and the embodiments of this application do not limit this.

[0241] In other possible implementations, d1 / H can also be less than 1 / 5, and d2 / H can also be less than 1 / 5. This application does not limit this.

[0242] like Figure 12a As shown, in one possible implementation, the inner wall surface of the hole 65 further includes a first side wall 656 and a second side wall 657 disposed opposite each other in the third direction Z. The first side wall 656 is connected between one end of the upper wall 654 and one end of the lower wall 655, and the second side wall 657 is connected between the other end of the upper wall 654 and the other end of the lower wall 655. The length direction C of the first magnetic attractor is parallel to the third direction Z.

[0243] The outer periphery of the first magnetic attractor 63 also includes a first side edge 633 and a second side edge 634 disposed opposite to each other in the third direction Z. The first side edge 633 is connected between one end of the upper edge 631 and one end of the lower edge 632, and the second side edge 634 is connected between the other end of the upper edge 634 and the other end of the lower edge 632. In the third direction Z, the first side edge 633 of the first magnetic attractor, the first side wall 656 of the hole, the second side wall 657 of the hole and the second side edge 634 of the first magnetic attractor are disposed alternately in sequence.

[0244] The first sidewall 656, upper sidewall 654, second sidewall 657, and lower sidewall 655 of the hole 65 are sequentially connected to form the inner wall of the closed hole 65. Similarly, the first side edge 633, upper edge 631, second side edge 634, and lower edge 632 of the first magnetic chuck are sequentially connected to form the outer periphery of the closed first magnetic chuck 63. In the third direction Z, there is a certain distance between the first sidewall 656 of the hole and the first side edge 633 of the first magnetic chuck, and there is a certain distance between the second sidewall 657 of the hole and the second side edge 634 of the first magnetic chuck. This prevents the hole 65 from penetrating the first side edge 633 or the second side edge 634 of the first magnetic chuck in the third direction Z (i.e., the length direction C of the first magnetic chuck), so that the mechanical properties of the magnetic restoring force of the first magnetic chuck 63 meet the effect of having a magnetic restoring force direction opposite to that of the second magnetic chuck 64. This reduces the magnetic restoring force on the magnet assembly 61, reduces drive power consumption, and improves the overall performance of the lens motor 2.

[0245] It should be noted that the embodiments of this application do not limit the position of the hole 65 relative to the first magnetic attractor 63 in the first direction X and the third direction Z. It can be reasonably set according to actual needs, as long as the magnetic attraction force of the magnetic attractor group 62 on the magnet group 61 is reduced. The following is a detailed description in conjunction with the accompanying drawings.

[0246] Furthermore, such as Figure 12a As shown, in one possible implementation, the hole 65 is located at the center of the first magnetic member 63 along its width direction (parallel to the first direction X). The hole 65 is also located at the center of the first magnetic member 63 along its length direction (parallel to the third direction Z). Positioning the hole 65 at the geometric center of the first magnetic member 63 helps to ensure that the force between the first magnetic member 63 and the magnet assembly 61 is symmetrically distributed along the first direction X and the third direction Z, making the mechanical characteristics of the magnetic restoring force stable and predictable, which is beneficial for the precise control of the focusing process of the lens motor 2. In other possible implementations, the hole 65 may be located off-center along the width direction of the first magnetic member 63, or off-center along the length direction of the first magnetic member 63; this embodiment does not impose such limitations.

[0247] Furthermore, the shape of the hole 65 is not limited in this embodiment and can be reasonably set according to actual needs, as long as the magnetic attraction force of the magnetic attraction group 62 on the magnet group 61 is reduced. The following is a detailed description in conjunction with the accompanying drawings.

[0248] like Figure 12a and Figure 12e As shown, in one possible implementation, hole 65 is configured as: rectangular hole 65 (see...) Figure 12a ) or circular hole 65 (see Figure 12e The structure of the first magnetic chuck 63 and the shape of the hole 65 form a relatively regular geometric shape, which can simplify the processing and assembly of the parts, help ensure dimensional consistency and product reliability in mass production, and also facilitate the arrangement of the first magnetic chuck 63 inside the lens motor 2.

[0249] In other possible implementations, hole 65 can also be set as a parallelogram (see...). Figure 12b ) or runway-shaped (see Figure 12d The geometric shape can be set to regular shapes, or it can be set to other irregular shapes. This application does not limit this.

[0250] Furthermore, the relative positional relationship between the upper wall surface 654 and the lower wall surface 655 of the hole is not limited, nor is the relative positional relationship between the first side wall surface 656 and the second side wall surface 657 of the hole. For example... Figure 12a , Figure 12b and Figure 12d As shown, in one possible implementation, the upper wall surface 654 of the hole is arranged parallel to the lower wall surface. For example... Figure 12c and Figure 12e In other possible implementations, the upper wall 654 and the lower wall 655 of the hole can also be set to be non-parallel.

[0251] Figures 12a to 12c In one possible implementation, the first sidewall 656 of the hole is arranged parallel to the second sidewall 657. For example... Figure 12d and Figure 12e In other possible implementations, the first sidewall 656 and the second sidewall 657 of the hole may also be set in a non-parallel manner.

[0252] It should be noted that the shape of each of the upper wall surface 654, lower wall surface 655, first side wall surface 656, and second side wall surface 657 of the hole is not limited; for example, it can be a plane or a curved surface. In one possible implementation, the upper wall surface 654 of the hole is set as a plane (see...). Figure 12a ) or curved surface (see Figure 12c The lower wall surface 655 of the hole is set as a plane (see...). Figure 12a ) or curved surface (see Figure 12cThe first sidewall 656 of the hole is set as a plane (see...). Figure 12a ) or curved surface (see Figure 12d The second sidewall 657 of the hole is set as a plane (see...). Figure 12a ) or curved surface (see Figure 12d ).

[0253] Furthermore, the relative positional relationship between the upper wall surface 654 of the hole and the upper edge 631 of the first magnetic attractor is not limited, nor is the relative positional relationship between the lower wall surface 655 of the hole and the lower edge 632 of the first magnetic attractor. For example... Figure 12a and Figure 12b As shown, in one possible implementation, the upper wall surface 654 of the hole is arranged parallel to the upper edge 631 of the first magnetic attractor. For example... Figure 12c and Figure 12e In other possible implementations, the upper wall 654 of the hole and the upper edge 631 of the first magnetic attractor can also be set non-parallel.

[0254] like Figure 12a and Figure 12b As shown, in one possible implementation, the lower wall surface 655 of the hole is arranged parallel to the lower edge 632 of the first magnetic attractor. For example... Figure 12c and Figure 12e In other possible implementations, the lower wall surface 655 of the hole and the lower edge 632 of the first magnetic attractor can also be set non-parallel.

[0255] In one possible implementation, the outer periphery of the second magnetic member 64 further includes a first side edge and a second side edge disposed opposite to each other in the third direction Z. The first side wall 656 of the hole is disposed parallel or non-parallel to the first side edge of the second magnetic member 64. The second side wall 657 of the hole is disposed parallel or non-parallel to the second side edge of the second magnetic member 64.

[0256] In addition, such as Figure 13a As shown, and in combination Figure 4b1 It is understood that, in one possible implementation, in the second direction Y, the first magnetic member 63 is located between the second magnetic member 64 and the magnet assembly 61. A portion or all of the hole 65 is positioned opposite the second magnetic member 64. Specifically, as... Figure 13a As shown, along the second direction Y, the first magnetic attractor 63 is disposed adjacent to the magnet assembly 61, and the second magnetic attractor 64 is disposed on the side of the first magnetic attractor 63 away from the magnet assembly 61. Part or all of the area of ​​the hole 65 on the first magnetic attractor 63 is disposed opposite to the magnet assembly 61 along the second direction Y.

[0257] The specific structure of the second magnetic element 64 is not limited. For example... Figure 13b As shown, in one possible implementation, the second magnetic element 64 is a solid rectangular sheet structure. (As...) Figure 13cAs shown, in one possible implementation, a process hole 65 for assembly is formed at the edge or corner of the second magnetic member 64. The process hole 65 is a hole specifically designed and machined to meet the needs of processing, manufacturing, assembly, or inspection processes. The process hole provided on the second magnetic member 64 facilitates assembly, and the shape and parameters of the process hole are set according to actual needs; this embodiment does not limit this.

[0258] The feasibility of the above implementation method is verified through simulation analysis. (Reference) Figure 14a and Figure 14b The magnetic assemblies 62 include a first magnetic member 63 and a second magnetic member 64. The hole 65 on the first magnetic member 63 is a through hole 651, and the first magnetic member 63 is located between the second magnetic member 64 and the magnet assembly 61. Figure 14a The diagram shows the mechanical analysis curves of the magnetic attraction restoring forces generated by the first magnetic attraction member 63 and the second magnetic attraction member 64 on the magnet assembly 61, and the mechanical analysis curve of the resultant force of the magnetic attraction restoring forces generated by the first magnetic attraction member 63 and the second magnetic attraction member 64 on the magnet assembly 61. Figure 14b The mechanical analysis curves of the magnetic attraction forces generated by the first magnetic attractor 63 and the second magnetic attractor 64 on the magnet assembly 61, and the mechanical analysis curves of the resultant force of the magnetic attraction forces generated by the first magnetic attractor 63 and the second magnetic attractor 64 on the magnet assembly 61 are shown.

[0259] like Figure 14a As shown, when the magnet assembly 61 moves upward along the first direction X (optical axis O1), the magnetic attraction and restoring forces generated by the first magnetic attractor 63 and the second magnetic attractor 64 on the magnet assembly 61 exhibit specific changing patterns and interactions: the magnetic attraction and restoring force generated by the first magnetic attractor 63 on the magnet assembly 61 generally increases, and this force is positive, with its direction being upward along the first direction X; the magnetic attraction and restoring force generated by the second magnetic attractor 64 on the magnet assembly 61 also generally increases, but this force is negative, with its direction being downward along the first direction X. Since the directions of the magnetic attraction and restoring forces generated by the two are opposite, the absolute value of the resultant magnetic attraction and restoring force of the first magnetic attractor 63 and the second magnetic attractor 64 acting on the magnet assembly 61 is significantly smaller than the absolute value of the magnetic attraction and restoring force generated by the first magnetic attractor 63 or the second magnetic attractor 64 alone.

[0260] When the magnet assembly 61 moves downward along the first direction X (optical axis O1), the magnetic restoring forces generated by the first magnetic chuck 63 and the second magnetic chuck 64 on the magnet assembly 61 also exhibit specific changing patterns and interactions: the magnetic restoring force generated by the first magnetic chuck 63 on the magnet assembly 61 generally increases, and this force is negative, with its direction being downward along the first direction X; the magnetic restoring force generated by the second magnetic chuck 64 on the magnet assembly 61 also generally increases, but this force is positive, with its direction being upward along the first direction X. Since the directions of the magnetic restoring forces generated by the two are opposite, the absolute value of the resultant magnetic restoring force of the first magnetic chuck 63 and the second magnetic chuck 64 acting on the magnet assembly 61 is significantly smaller than the absolute value of the magnetic restoring force generated by the first magnetic chuck 63 or the second magnetic chuck 64 alone.

[0261] like Figure 14b As shown, when the magnet assembly 61 moves along the first direction X (optical axis O1), whether moving upwards or downwards, the curves of the magnetic attraction force generated by the first magnetic attractor 63 and the second magnetic attractor 64 on the magnet assembly 61 approach a straight line. This indicates that in the second direction Y, the magnitude of the magnetic attraction force generated by the first magnetic attractor 63 and the second magnetic attractor 64 on the magnet assembly 61 is stable and does not change significantly with the movement of the magnet assembly 61 in the first direction X. The resultant force of the magnetic attraction forces acting on the magnet assembly 61 by the first magnetic attractor 63 and the second magnetic attractor 64 is the sum of the values ​​of the magnetic attraction forces generated by the two. Since the directions of these two magnetic attraction forces are the same, the resultant force is enhanced, and the first magnetic attractor 63 and the second magnetic attractor 64 together provide a large and stable attraction force for the magnet assembly 61.

[0262] In summary, throughout the focusing stroke, the combined magnetic attraction force of the first magnetic element 63 and the second magnetic element 64 in the second direction Y is reduced, thus decreasing the net magnetic attraction force that the drive assembly 5 needs to overcome. This contributes to reducing the energy consumption of the lens motor 2 system and improving the focusing response speed. The combined magnetic attraction force of the first magnetic element 63 and the second magnetic element 64 in the first direction X increases and remains stable, ensuring a tight fit between the lens mount 4 and the guide rail 45. This effectively suppresses wobbling and offset during movement, ensuring high stability and improving the reliability of the lens motor 2. This provides a mechanical structural foundation for the camera module 1 to obtain high-definition images.

[0263] In one possible implementation, the height of the second magnetic member 64 in the first direction X is within the range of motion covered by the magnet assembly 61 in the first direction X. Further, as... Figure 13aAs shown, the second magnetic member 64 includes an upper edge 641 and a lower edge 642 disposed opposite to each other in the first direction X. When the lens mount 4 is in the first movable position, in the first direction X, the upper edge 611 of the magnet assembly is located on the side of the upper edge 641 of the second magnetic member away from the lower edge 642, or between the upper edge 641 and the lower edge 642, or the upper edge 611 of the magnet assembly is aligned with the upper edge 641 of the second magnetic member. When the lens mount 4 is in the second movable position, in the first direction X, the lower edge 612 of the magnet assembly is located on the side of the lower edge 642 of the second magnetic member away from the upper edge 641, or between the lower edge 642 and the upper edge 641, or the lower edge 612 of the magnet assembly is aligned with the lower edge 642 of the second magnetic member.

[0264] In one implementation, when the lens mount 4 is in the first moving position, the upper edge 611 of the magnet assembly is aligned with the upper edge 641 of the second magnetic member, or is located on the side of the upper edge 641 of the second magnetic member away from the lower edge 642 (i.e., the upper edge 611 of the magnet assembly extends beyond the upper edge 641 of the second magnetic member). When the lens mount 4 is in the second moving position, the lower edge 612 of the magnet assembly is aligned with the lower edge 642 of the second magnetic member, or is located on the side of the lower edge 642 of the second magnetic member away from the upper edge 641 (i.e., the lower edge 612 of the magnet assembly extends beyond the lower edge 642 of the second magnetic member). Alternatively, it can be understood that during the movement of the lens mount 4 along the first direction X, the second magnetic member 64 is within the spatial area covered by the movement range of the magnet assembly 61 in the first direction X. This design optimizes the structural layout by making the height of the second magnetic member 64 in the first direction X less than the movement range of the magnet assembly 61 in the first direction X. This improves the space utilization inside the lens motor 2 housing 3 and avoids increasing the volume of the housing 3 due to the installation of the second magnetic member 64, which is beneficial for miniaturization and weight reduction of the lens motor 2. It should be noted that this arrangement also applies to structures where "the second magnetic member 64 is located between the first magnetic member 63 and the magnet assembly 61 in the second direction Y".

[0265] Those skilled in the art will understand that the structure of the hole 65 on the first magnetic member 63 can also be a blind hole 652 that does not penetrate the first magnetic member 63, and the magnetic assembly 62 only includes the first magnetic member 63, without a second magnetic member 64. Figures 15a-15dAs shown, in one possible implementation, the hole 65 is configured as a blind hole 652 recessed from one of the outer surfaces 635 and 636 toward the other outer surface, and the first magnetic member 63 has a magnetic attraction force in the second direction Y with the magnet assembly 61, so that the corresponding sidewalls of the lens mount 4 and the housing 3 are attracted to each other in the second direction Y. For example, the first sidewall 43 of the lens mount and the first sidewall 35 of the housing are attracted to each other in the second direction Y.

[0266] The magnetic chuck assembly 62 includes only the first magnetic chuck 63. The hole 65 in the first magnetic chuck 63 is a blind hole 652. This blind hole 652 design allows the first magnetic chuck 63 to maintain a large magnetic attraction force on the magnet assembly 61 in the second direction Y. This magnetic attraction force better confines the lens mount 4 within the corresponding movement track of the housing 3, ensuring the stability of the lens mount 4's movement in the first direction X during autofocus. At the same time, the magnetic restoring force of the first magnetic chuck 63 on the magnet assembly 61 in the first direction X is small. When the direction of the magnetic restoring force is opposite to the movement direction of the lens mount 4, the resistance experienced by the lens mount 4 is reduced, thereby reducing the driving force required during focusing and thus reducing driving power consumption. It should be noted that the first magnetic chuck 63 with the blind hole 652 can also be understood as an integrated magnetic chuck 63 with the through hole 651 and the second magnetic chuck 64 mentioned above.

[0267] It should be noted that the blind hole 652 can be located on the first outer surface 635 of the first magnetic attractor (see...). Figure 15a It can also be the second outer surface 636 of the first magnetic element (see...). Figure 15d This application does not limit the scope of the embodiments. Figure 15a and Figure 15b As shown, in one possible implementation, the hole 65 does not penetrate the first magnetic member 63, but is a blind hole 652 structure, with the blind hole 652 recessed from the first outer surface 635 of the first magnetic member toward the side where the second outer surface is located. Figure 15d As shown, in other possible implementations, the blind hole 652 may also be recessed from the second outer surface 636 of the first magnetic member toward the side where the first outer surface 635 is located.

[0268] Furthermore, such as Figure 15c As shown, in one possible implementation, a process hole 65 for assembly is formed at the edge or corner of the first magnetic chuck 63. This process hole 65 must not affect the magnitude and direction of the magnetic restoring force generated by the first magnetic chuck 63 on the magnet assembly 61. In other possible implementations, the process hole 65 may not be provided in the first magnetic chuck 63, and the aforementioned hole 65 in the first magnetic chuck 63 can be directly reused as a process hole 65. This application embodiment does not impose any limitations on this.

[0269] All other structural parameters of blind hole 652 are consistent with those of hole 65 described above.

[0270] The mechanical properties of the first magnetic chuck 63 with the blind hole 652 are analyzed below. Refer to Figure 16a and... Figure 16b When the magnetic absorbing assembly 62 includes only the first magnetic absorbing member 63 and a blind hole 652 is formed on the first magnetic absorbing member 63, Figure 16a is a mechanical analysis curve of the magnetic attraction restoring force generated by the first magnetic absorbing member 63 on the magnet assembly 61. Figure 16b This is a mechanical analysis curve of the magnetic attraction force generated by the first magnetic attractor 63 on the magnet assembly 61. It is assumed that when the magnet assembly 61 moves upward along the first direction X, the relative movement distance of the magnet assembly 61 is positive; correspondingly, when the magnet assembly 61 moves downward along the first direction X, the relative movement distance of the magnet assembly 61 is negative.

[0271] As shown in Figure 16a, when the magnet assembly 61 moves along the first direction X, the magnetic attraction restoring force generated by the first magnetic attractor 63 on the magnet assembly 61 exhibits a fluctuating trend of first increasing, then decreasing, and then increasing again. However, the value of the magnetic attraction restoring force is relatively small. When the magnet assembly 61 moves upward or downward by 0-0.4 mm in the first direction X, the minimum magnetic attraction restoring force generated by the first magnetic attractor 63 on the magnet assembly 61 is 0 mN, and the maximum is 3 mN. Therefore, the absolute value of the resultant magnetic attraction restoring force of the first magnetic attractor 63 acting on the magnet assembly 61 is significantly smaller than the absolute value of the magnetic attraction restoring force generated by the magnetic attractor without the blind hole 652.

[0272] like Figure 16b As shown, when the magnet assembly 61 moves along the first direction X (optical axis O1), whether moving upwards or downwards, the magnetic attraction force generated by the first magnetic attractor 63 and the second magnetic attractor 64 on the magnet assembly 61 changes little. When the magnet assembly 61 moves upwards or downwards by 0-0.4 mm in the first direction X, the minimum magnetic attraction force generated by the first magnetic attractor 63 on the magnet assembly 61 is approximately 792 mN, and the maximum is approximately 829 mN. The first magnetic attractor 63 can provide a large and stable attraction force for the magnet assembly 61.

[0273] In summary, the first magnetic attractor 63 with the blind hole 652 structure has a relatively small overall magnetic attraction restoring force in the second direction Y, which reduces the total magnetic attraction restoring force that the drive assembly 5 needs to overcome. This helps to reduce the energy consumption of the lens motor 2 system and improve the focusing response speed. The resultant force of the magnetic attraction of the first magnetic attractor 63 in the first direction X is large and remains stable, which can make the lens mounting base 4 fit tightly with the guide rail 45, effectively suppressing shaking and offset during movement, ensuring high stability of movement, improving the reliability of the lens motor 2, and providing a mechanical structural foundation for the camera module 1 to obtain high-definition images.

[0274] The structure and working principle of the magnetic suction component 6 have been described in detail above with reference to the accompanying drawings. The following section describes the structural composition of the lens motor 2 in detail with reference to an exemplary structure.

[0275] Please see Figures 17a-17c , Figure 17a This is a three-dimensional structural diagram of an exemplary structure of the lens motor 2 according to an embodiment of this application; Figure 17b This is an exploded view of an exemplary structure of the lens motor 2 according to an embodiment of this application. Figure 17c This is a cross-sectional schematic diagram of an exemplary structure of the lens motor 2 in an embodiment of this application.

[0276] It should be noted that in the embodiments of this application, the camera module 1 using the lens motor 2 can achieve only the autofocus function, or it can achieve both the autofocus function and the optical image stabilization function at the same time. Figures 17a to 17c A lens motor 2 is shown that can simultaneously achieve autofocus and optical image stabilization.

[0277] like Figure 17a and Figure 17b As shown, the specific structure of the outer shell 3 is not limited. In one example, the outer shell 3 includes an upper shell 31 and a lower shell 32, which are fastened together. The first lens mounting base 4 is provided with a mounting hole 41, which extends through the first lens mounting base 4 along the first direction X. The first end 653 of the mounting hole 41 extends to the first end face of the first lens mounting base 4, and the second end of the mounting hole 41 extends to the second end face of the first lens mounting base 4. The first lens group 13 is installed in the mounting hole 41.

[0278] It should be noted that the shapes of the housing 3 and the lens mount 4 are not limited; they can be rectangular, circular, etc. In one example, such as... Figure 18a and Figure 18b As shown, both the outer casing 3 and the lens mount 4 are rectangular. The thickness direction of the outer casing 3 and the lens mount 4 can be understood as the first direction X, which is the optical axis O1 direction of the lens 12.

[0279] And, as Figure 17b and Figure 17c As shown, the lens motor 2 also includes a circuit board 37, and the type of circuit board 37 is not limited; for example, it can be a flexible circuit board 108 or a PCB board. For example, the circuit board 37 is a flexible circuit board 108. Furthermore, the position of the circuit board 37 is not limited; it can be fixedly connected to the upper housing 31 or fixedly connected to the lower housing 32. In one example, the circuit board 37 is fixedly connected to the lower housing 32 for transmitting electrical signals to the drive assembly 5, sending signals to the coil 51 to drive the first lens mount 4 to move along the first direction X.

[0280] The lens motor 2 also includes guide rails 45, and the number of guide rails 45 is unlimited. For example, such as... Figure 17b and Figure 17c As shown, the lens motor 2 includes two guide rails 45, which are respectively located at both ends of the first sidewall 43 of the lens mount along the third direction Z. The two guide rails 45 are spaced apart along the third direction Z, and the magnet assembly 61 is located between the two guide rails 45. The design of the two guide rails 45 can improve the stability of the lens mount 4 when it moves along the first direction X.

[0281] The placement of the magnetic component 6 is not limited; for example, such as... Figure 17b and Figure 17c As shown, the magnetic assemblies 62 are disposed on the circuit board 37. The circuit board 37 includes a first part 371, which is fixed to the first side wall 35 of the housing and located between the first side wall 43 of the lens mount 4 and the first side wall 35 of the housing along the second direction Y. The coil 51 is fixed to the side surface of the first part 371 near the lens mount 4 along the second direction Y. The first magnetic assembly 63 is fixed to the other side surface of the first part 371 near the housing along the second direction Y. The second magnetic assembly 64 is disposed in the hollow area of ​​the coil 51. A through hole 651 is formed in the middle of the first magnetic assembly 63 along the first direction X. The center surfaces of the first magnetic assembly 63, the second magnetic assembly 64, and the magnet assembly 61 are aligned.

[0282] When the lens motor 2 focuses, the circuit board 37 energizes the coil 51. When current flows through the coil 51, it generates magnetism. When the direction of the current changes, the polarity of the magnetism generated by the coil 51 reverses. The interaction (attraction and repulsion) between the magnetizing coil 51 and the driving magnet assembly 52 produces a driving force that moves the lens mount 4 in the first direction X. When the lens mount 4 moves along the first direction X toward a position away from the zero point, the first magnetic chuck 63 and the second magnetic chuck 64 apply a magnetic attraction force in the second direction Y to the magnet assembly 61, making the inner wall of the first groove 46 of the lens mount 4 tightly adhere to the outer peripheral surface of the guide rail 45, ensuring the stability of the lens mount 4 during movement. The first magnetic chuck 63 applies a magnetic restoring force in the first direction X toward its direction of movement to the magnet assembly 61, and the second magnetic chuck 64 applies a magnetic restoring force in the second direction Y toward the zero point position to the magnet assembly 61. The magnetic restoring forces of the first magnetic chuck 63 and the second magnetic chuck 64 are opposite in direction and cancel each other out.

[0283] Therefore, in the lens motor 2 with the above exemplary structure, the arrangement of the first magnetic member 63 and the second magnetic member 64 in the magnetic component 6, as well as the design of the through hole 651 on the first magnetic member 63, can effectively reduce the magnetic restoring force on the magnet assembly 61, thereby reducing the driving force required by the drive component 5 to overcome the magnetic restoring force during the focusing process, thus reducing the driving power consumption and improving the overall performance of the lens motor 2.

[0284] Furthermore, the lens motor 2 can also have image stabilization functionality, which is achieved through the image stabilization drive component 5. The structure of the image stabilization drive component 5 is not limited; for example, such as... Figure 17b and Figure 17c As shown, the lens mount 4 includes a first mounting portion 401, a second mounting portion 402, and a third mounting portion 403. Along the first direction X, the first mounting portion 401, the second mounting portion 402, and the third mounting portion 403 are sequentially arranged. The first mounting portion 401 is located adjacent to the light-emitting side, and the third mounting portion 403 is located adjacent to the light-incident side. The second mounting portion 402 is located between the first mounting portion 401 and the third mounting portion 403. The side of the third mounting portion 403 away from the second mounting portion 402 is used to mount and fix the lens 12 (e.g., the first lens group).

[0285] The drive assembly 5 and the magnetic attraction assembly 6 are disposed between the side wall of the first mounting part 401 along the second direction Y and the corresponding side wall of the outer casing 3. The anti-shake drive assembly 5 includes a first anti-shake drive assembly 53 and a second anti-shake drive assembly 54. The first anti-shake drive assembly 53 is used to perform anti-shake function in the third direction Z, and the second anti-shake drive assembly 54 is used to perform anti-shake function in the second direction Y.

[0286] Specifically, the first image stabilization drive assembly 53 includes a first image stabilization coil 531 and a first magnet 532. A first receiving groove 406 is formed on the side wall of the third mounting portion 403 along the third direction Z. The first magnet 532 is embedded in the first receiving groove 406. The first image stabilization coil 531 and the first magnet 532 are arranged opposite to each other along the third direction Z. A slide rail 404 and a slide groove 405 extending along the third direction Z are provided between the opposite walls of the first mounting portion 401 and the second mounting portion 402 along the first direction X, so that the second mounting portion 402 can slide relative to the first mounting portion 401 along the third direction Z. The first image stabilization coil 531 is fixedly connected to the circuit board 37. The circuit board 37 energizes the first image stabilization coil 531. When current flows through the first image stabilization coil 531, the first image stabilization coil 531 generates magnetism. The interaction between the magnetic first image stabilization coil 531 and the first magnet 532 generates a driving force that moves the third mounting part 403 along the third direction Z. The third mounting part 403 and the second mounting part 402 cannot slide relative to each other along the third direction Z. The third mounting part 403 drives the second mounting part 402 and the lens 12 to slide relative to the first mounting part 401 along the third direction Z, thereby realizing the image stabilization function in the third direction Z.

[0287] The second image stabilization component includes a second image stabilization coil 541 and a second magnet 542. A second receiving groove 407 is formed on the side wall of the third mounting portion 403 away from the drive component 5 along the second direction Y. The second magnet 542 is embedded in the second receiving groove 407. The second image stabilization coil 541 and the second magnet 542 are arranged opposite to each other along the second direction Y. A slide rail 404 and a slide groove 405 extending along the second direction Y are provided between the walls of the third mounting portion 403 and the second mounting portion 402 that are opposite to each other along the first direction X, so that the third mounting portion 403 can slide relative to the second mounting portion 402 along the second direction Y. The second image stabilization coil 541 is fixedly connected to the circuit board 37. The circuit board 37 energizes the second image stabilization coil 541. When current flows through the second image stabilization coil 541, the second image stabilization coil 541 generates magnetism. The interaction between the magnetized second image stabilization coil 541 and the second magnet 542 generates a driving force that moves the third mounting part 403 along the second direction Y. The third mounting part 403 drives the lens 12 to slide relative to the second mounting part 402 along the second direction Y, thereby realizing the image stabilization function in the second direction Y.

[0288] In summary, in the above exemplary structure, the drive component 5 of the lens motor 2 and the magnet assembly 61 enable the focusing function of the camera assembly in the first direction X (optical axis O1 direction), reducing the driving force required by the drive component 5 to overcome the magnetic restoring force during focusing, thereby reducing drive power consumption. The first image stabilization component and the second image stabilization component respectively achieve image stabilization in the third direction Z and the second direction Y through a double-layer sliding structure, improving the overall performance of the lens motor 2.

[0289] The following simulation diagram is used to verify the trend of the magnetic attraction restoring force of the first magnetic attraction component 63 on the magnet assembly 61 changing with the displacement of the magnet assembly 61 when the relevant parameters of the hole 65 on the first magnetic attraction component 63 change.

[0290] like Figure 18a As shown, in one possible implementation, in the second direction Y, the range of motion of the magnet assembly 61 covers the first magnetic attractor 63, i.e. Figure 9a The following, in conjunction with some simulation embodiments, illustrates the effect of the change in the height h of the hole 65 on the magnetic attraction restoring force generated by the first magnetic attractor 63 acting on the magnet assembly 61.

[0291] The following are the relevant structural data of the first magnetic component 63 and the hole 65 in each simulation embodiment, as shown in Table 1:

[0292] Table 1

[0293]

[0294] like Figure 18a As shown, Figure 18a The graph shows the mechanical analysis of the magnetic restoring force of the first magnetic attractor 63 when the height h of the hole 65 is different. It is defined that when the magnet assembly 61 moves upward along the first direction X, the relative movement distance of the magnet assembly 61 is positive; correspondingly, when the magnet assembly 61 moves downward along the first direction X, the relative movement distance of the magnet assembly 61 is negative. When the direction of the magnetic restoring force applied by the first magnetic attractor 63 to the magnet assembly 61 is upward along the first direction X, the magnetic restoring force is positive; correspondingly, when the direction of the magnetic restoring force applied by the first magnetic attractor 63 to the magnet assembly 61 is downward along the first direction X, the magnetic restoring force is negative.

[0295] like Figure 18a As shown in Example 1, in the embodiment shown, when the first magnetic attractor 63 does not have a hole 65, the magnetic attraction restoring force of the first magnetic attractor 63 increases as the distance of the magnet assembly 61 away from the zero point increases. When the magnet assembly 61 moves upward along the first direction X, the direction of the magnetic attraction restoring force is downward, and when the magnet assembly 61 moves downward along the first direction X, the direction of the magnetic attraction restoring force is upward.

[0296] In Examples 2 and 3, when the first magnetic attractor 63 is provided with holes as shown in Table 1 above, the magnetic attraction restoring force of the first magnetic attractor 63 increases as the distance of the magnet assembly 61 from the zero point increases. When the magnet assembly 61 moves upward along the first direction X, the direction of the magnetic attraction restoring force is upward, and when the magnet assembly 61 moves downward along the first direction X, the direction of the magnetic attraction restoring force is downward.

[0297] In Examples 4, 5, and 6, when the first magnetic accumulator 63 has holes as shown in Table 1 above, the magnetic attraction restoring force of the first magnetic accumulator 63 increases as the distance of the magnet assembly 61 from the zero point increases. When the magnet assembly 61 moves upward along the first direction X, the direction of the magnetic attraction restoring force is downward, and when the magnet assembly 61 moves downward along the first direction X, the direction of the magnetic attraction restoring force is upward.

[0298] In summary, the actual physical dimensions of the height h of the hole 65 will affect the magnitude of the magnetic attraction force recovery of the first magnetic attraction component 63. The direction of the magnetic attraction force recovery of the first magnetic attraction component 63 is mainly related to the ratio of h / H and (S1-S2) / S1, and this value satisfies: 1 / 4≤h / H≤3 / 5, 65%≤(S1-S2) / S1≤95%.

[0299] In another possible implementation, in the second direction Y, the first magnetic attractor 63 covers the range of motion of the magnet assembly 61, i.e. Figure 8c The embodiments shown below, combined with some simulation embodiments, are further illustrated. Figure 18b This paper explains the effect of the change in the height h of the hole 65 on the magnetic attraction restoring force generated by the first magnetic attracting element 63 acting on the magnet assembly 61. Figure 18b The relevant structural data of the first magnetic suction component 63 and the hole 65 in each simulation embodiment are the same as those shown in Table 1.

[0300] like Figure 18b As shown, Figure 18b The diagram shows the mechanical analysis curves of the magnetic attraction restoring force of the first magnetic attractor 63 when the height h of the hole 65 is different. It is set that when the magnet assembly 61 moves upward along the first direction X, the relative movement distance of the magnet assembly 61 is a positive value, and correspondingly, when the magnet assembly 61 moves downward along the first direction X, the relative movement distance of the magnet assembly 61 is a negative value.

[0301] like Figure 18b As shown in Example 1, in the embodiment where the first magnetic attractor 63 is not provided with a hole, the magnetic attraction restoring force of the first magnetic attractor 63 increases as the distance of the magnet assembly 61 from the zero point increases. When the magnet assembly 61 moves upward along the first direction X, the direction of the magnetic attraction restoring force is downward, and when the magnet assembly 61 moves downward along the first direction X, the direction of the magnetic attraction restoring force is upward.

[0302] In Examples 2, 3, and 4, the magnetic restoring force of the first magnetic accumulator 63 increases as the distance of the magnet assembly 61 from the zero point increases. When the magnet assembly 61 moves upward along the first direction X, the direction of the magnetic restoring force is upward, and when the magnet assembly 61 moves downward along the first direction X, the direction of the magnetic restoring force is downward.

[0303] In Example 5, the magnetic restoring force of the first magnetic attractor 63 changes little as the distance of the magnet assembly 61 from the zero point increases, and approaches zero.

[0304] In Example 6, the magnetic restoring force of the first magnetic attractor 63 increases as the distance of the magnet assembly 61 from the zero point increases. When the magnet assembly 61 moves upward along the first direction X, the direction of the magnetic restoring force is downward, and when the magnet assembly 61 moves downward along the first direction X, the direction of the magnetic restoring force is upward. However, the change range of the magnetic restoring force of the first magnetic attractor 63 is relatively small.

[0305] In the above example embodiments, it can be seen from the analysis that the actual physical size of the height h of the hole 65 will affect the magnitude of the magnetic attraction force recovery of the first magnetic attractor 63, and the direction of the magnetic attraction force recovery of the first magnetic attractor 63 is mainly related to the ratio of h / H and (S1-S2) / S1. Furthermore, this value satisfies: 1 / 4 ≤ h / H ≤ 3 / 5, 65% ≤ (S1-S2) / S1 ≤ 95%.

[0306] Those skilled in the art will understand that when the actual physical size of the height H of the first magnetic chuck 63 decreases, the corresponding magnetic restoring force will also decrease, but its direction still follows the rules summarized in the embodiments of this application. The change in the actual physical area of ​​the first magnetic chuck 63 facing the magnet group 61 along the second direction Y is similar to the change in the height h of the hole 65, which will affect the magnitude of the magnetic restoring force, but the direction of the corresponding magnetic restoring force is mainly related to the ratio of h / H and (S1-S2) / S1. In actual production, the actual physical size of the height H of the first magnetic chuck 63 and the relative area of ​​the first magnetic chuck 63 and the magnet group 61 can be adjusted according to the actual situation, and the embodiments of this application do not impose any restrictions on this.

[0307] The above description illustrates the implementation of this application through specific embodiments. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Although the description of this application is presented in conjunction with some embodiments, this does not mean that the features of this application are limited to this embodiment. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of this application. To provide a thorough understanding of this application, many specific details are included in the above description. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0308] It should be noted that in this specification, 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.

[0309] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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.

[0310] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0311] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "setting," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0312] In the description of this application, it should be understood that "electrical connection" can be understood as physical contact and electrical conduction between components; it can also be understood as the form in which different components in the circuit structure are connected by physical lines that can transmit electrical signals, such as copper foil of printed circuit board (PCB) or wires.

[0313] In the description of this application, it should be noted that the mutual perpendicularity in this application is not absolute perpendicularity. Approximate perpendicularity due to processing errors and assembly errors (e.g., the included angle between two structural features is 89.9°) is also within the scope of mutual perpendicularity in this application. Similarly, the mutual parallelism in this application is not absolute parallelism. Approximate parallelism due to processing errors and assembly errors (e.g., the included angle between two structural features is 0.1°) is also within the scope of mutual parallelism in this application. This application does not impose specific limitations in this regard.

[0314] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A lens motor, characterized in that, include: The outer shell (3) forms a receiving space (36); A lens mounting base (4) is provided with a mounting hole (41) for mounting the first lens group (13) of the lens (12). The lens mounting base (4) is disposed in the receiving space (36) of the housing (3) and is slidably connected to the housing (3) along a first direction (X) so that the lens mounting base (4) can slide between a first moving position and a second moving position relative to the housing (3); the first direction (X) is the optical axis (O1) direction of the first lens group (13). A magnetic suction assembly (6) is disposed between the lens mount (4) and the corresponding sidewall of the housing (3), and includes a magnet assembly (61) and a magnetic suction assembly (62). The magnet assembly (61) includes at least one magnet (610) and is fixedly disposed on the lens mount (4). The magnetic suction assembly (62) is fixedly disposed on the housing (3) at the position corresponding to the magnet assembly (61). The magnetic suction assembly (62) includes a first magnetic suction member (63), which has a thickness-oriented shape. The first outer surface (635) of the first magnetic member (63) is disposed opposite to the magnet assembly (61) in the second direction (Y) with a first outer surface (635) and a second outer surface (636) disposed opposite to each other. The first magnetic member (63) is provided with a hole (65), and the inner wall surface of the hole (65) is spaced apart from the outer periphery of the first magnetic member (63). The second direction (Y) is perpendicular to the first direction (X), and the thickness direction (B) of the first magnetic member is parallel to the second direction (Y). Furthermore, the hole (65) is configured as a through hole (651) extending from the first outer surface (635) to the second outer surface (636). The magnetic assemblies (62) further include a second magnetic member (64). In the second direction (Y), the second magnetic member (64) is disposed opposite to the first magnetic member (63) and opposite to the magnet assembly (61). The first magnetic member (63) and the magnet assembly (61) and the second magnetic member (64) and the magnet assembly (61) both have magnetic attraction forces in the second direction (Y), so that the corresponding sidewalls of the lens mount (4) and the housing (3) are attracted to each other in the second direction (Y). Furthermore, the magnetic restoring forces of the first magnetic member (63) and the second magnetic member (64) acting on the magnet assembly (61) in the first direction (X) are opposite in direction. Alternatively, the hole (65) is configured as a blind hole (652) recessed from one of the first outer surface (635) and the second outer surface (636) toward the other outer surface, and the first magnetic member (63) has a magnetic attraction in the second direction (Y) with the magnet assembly (61) so that the corresponding sidewalls of the lens mount (4) and the housing (3) are attracted to each other in the second direction (Y).

2. The lens motor as described in claim 1, characterized in that, The height of the first magnetic suction member (63) in the first direction (X) is H, and the height of the hole (65) in the first direction (X) is h, wherein H and h satisfy: 1 / 4≤h / H≤3 / 5; The outer edge of the first outer surface (635) surrounds to form a first region (637), the area of ​​the first region (637) is S1, the area of ​​the first end (653) of the hole (65) is S2, the first end (653) of the hole (65) is: the end of the hole (65) close to the first outer surface along its depth direction, and S1 and S2 satisfy: 65% ≤ (S1-S2) / S1 ≤ 95%.

3. The lens motor as described in claim 2, characterized in that, The H and h satisfy: 1 / 3 ≤ h / H ≤ 1 / 2; S1 and S2 satisfy the following condition: 80% ≤ (S1-S2) / S1 ≤ 90%.

4. The lens motor as described in claim 2, characterized in that, The inner wall surface of the hole (65) includes an upper wall surface (654) and a lower wall surface (655) that are arranged opposite to each other in the first direction (X). The outer periphery of the first magnetic member (63) includes an upper edge (631) and a lower edge (632) that are arranged opposite to each other in the first direction (X). In the first direction (X), the upper edge (631) of the first magnetic member (63), the upper wall surface (654) of the hole (65), the lower wall surface (655) of the hole (65) and the lower edge (632) of the first magnetic member (63) are arranged alternately in sequence. The distance between the upper wall surface (654) of the hole (65) and the upper edge (631) of the first magnetic suction member (63) is d1, and the distance between the lower wall surface (655) of the hole (65) and the upper edge (631) of the first magnetic suction member (63) is d2. d1 / H is greater than or equal to 1 / 5, and d2 / H is greater than or equal to 1 / 5.

5. The lens motor as described in claim 4, characterized in that, The inner wall of the hole (65) further includes a first side wall (656) and a second side wall (657) disposed opposite each other in a third direction (Z). The first side wall (656) is connected between one end of the upper wall (654) and one end of the lower wall (655), and the second side wall (657) is connected between the other end of the upper wall (654) and the other end of the lower wall (655). The third direction (Z) is perpendicular to the first direction (X) and the second direction (Y). The outer periphery of the first magnetic attractor (63) also includes a first side edge (633) and a second side edge (634) disposed opposite to each other in the third direction (Z). The first side edge (633) is connected between one end of the upper edge (631) and one end of the lower edge (632), and the second side edge (634) is connected between the other end of the upper edge (631) and the other end of the lower edge (632). In the third direction (Z), the first side edge (633) of the first magnetic attractor, the first side wall (656) of the hole, the second side wall (657) of the hole and the second side edge (634) of the first magnetic attractor are arranged sequentially at intervals.

6. The lens motor as described in claim 1, characterized in that, The hole (65) is located in the middle of the width direction of the first magnetic member (63), and the width direction (A) of the first magnetic member is parallel to the first direction (X); The hole (65) is located at the middle of the first magnetic attractor (63) along its length direction, and the length direction (C) of the first magnetic attractor is perpendicular to the first direction (X) and the second direction (Y).

7. The lens motor as described in claim 1, characterized in that, The hole (65) is configured as: a rectangular hole (65), a circular hole (65), or a polygonal hole (65); The hole (65) extends in a direction parallel to the thickness direction (B) of the first magnetic attractor.

8. The lens motor as described in claim 1, characterized in that, The magnet assembly (61) includes an upper edge and a lower edge that are disposed opposite to each other in the first direction (X), and the outer periphery of the first magnetic attractor (63) includes an upper edge (631) and a lower edge (632) that are disposed opposite to each other in the first direction (X); When the lens mount (4) is in the first moving position, in the first direction (X), the upper edge (611) of the magnet assembly (61) is located on the side of the upper edge (631) of the first magnetic member away from the lower edge (632) or between the upper edge (631) and the lower edge (632), or the upper edge (611) of the magnet assembly is aligned with the upper edge (631) of the first magnetic member; When the lens mount (4) is in the second movable position, in the first direction (X), the lower edge (612) of the magnet assembly is located on the side of the lower edge (632) of the first magnetic member away from the upper edge (631) or between the lower edge (632) and the upper edge (631), or the lower edge (612) of the magnet assembly is aligned with the lower edge (632) of the first magnetic member.

9. The lens motor as described in claim 8, characterized in that, When the lens mounting base (4) is located in the middle position between the first moving position and the second moving position, the center surface of the magnet assembly (61) in the first direction (X) is aligned with the center surface of the first magnetic suction member (63) in the first direction (X), or, is set at a preset first distance threshold interval. When the magnet assembly (61) includes a second magnetic chuck (64), the center surface of the magnet assembly (61) in the first direction (X) is aligned with the center surface of the second magnetic chuck (64) in the first direction (X), or, they are set at a preset second distance threshold interval, and the center surface of the second magnetic chuck (64) in the first direction (X) is aligned with the center surface of the first magnetic chuck (63) in the first direction (X), or, they are set at a preset third distance threshold interval.

10. The lens motor as described in claim 1, characterized in that, The lens motor (2) further includes a drive assembly (5), which is used to drive the lens mount (4) to slide relative to the housing (3) along the first direction (X), and includes a drive magnet assembly (52) and a coil (51). The drive magnet assembly (52) is fixedly disposed on the lens mount (4), and the coil (51) is fixedly disposed on the housing (3) at the position corresponding to the drive magnet assembly (52).

11. The lens motor according to any one of claims 1-10, characterized in that, When the magnet assembly (61) includes a second magnetic attractor (64), a portion or all of the hole (65) is disposed opposite to the second magnetic attractor (64); in the second direction (Y), the second magnetic attractor (64) is located between the first magnetic attractor (63) and the magnet assembly (61), or the first magnetic attractor (63) is located between the second magnetic attractor (64) and the magnet assembly (61).

12. The lens motor as described in claim 11, characterized in that, The magnet group (61) is reused as the drive magnet group (52) of the drive component (5) in the lens motor (2). The coil (51) of the drive component (5) is arranged opposite to the magnet group (61) in the second direction (Y). The coil (51) has a ring structure and forms a hollow area around it. In the second direction (Y), the coil (51) is located between the first magnetic attractor (63) and the magnet assembly (61), and at least a portion of the second magnetic attractor (64) is located within the hollow area enclosed by the coil (51).

13. The lens motor as described in claim 11, characterized in that, The second magnetic attractor (64) includes an upper edge (641) and a lower edge (642) disposed opposite to each other in the first direction (X); When the lens mount (4) is in the first moving position, in the first direction (X), the upper edge (611) of the magnet assembly (61) is located on the side of the upper edge (641) of the second magnetic member away from the lower edge (642) or between the upper edge (641) and the lower edge (642), or the upper edge (611) of the magnet assembly is aligned with the upper edge (641) of the second magnetic member; When the lens mount (4) is in the second movable position, in the first direction (X), the lower edge (612) of the magnet assembly is located on the side of the lower edge (642) of the second magnetic member away from the upper edge (641) or between the lower edge (642) and the upper edge (641), or the lower edge (612) of the magnet assembly is aligned with the lower edge (642) of the second magnetic member.

14. The lens motor according to any one of claims 1-10, characterized in that, The first magnetic attractor (63) is configured as a sheet structure or a block structure, and the second magnetic attractor (64) is configured as a sheet structure or a block structure; the magnet group (61) includes a plurality of magnets (610) arranged sequentially in the first direction (X).

15. The lens motor according to any one of claims 1-10, characterized in that, Each of the magnets (610) is a magnet or a permanent magnet, and the first magnetic attractor (63) and the second magnetic attractor (64) are made of a metal material that can be attracted by the magnet (610).

16. A camera module, characterized in that, The lens (12), image sensor (11), and lens motor (2) according to any one of claims 1-15 are included; wherein the lens (12) includes a first lens group (13), the first lens group (13) is fixed in the mounting hole (41) of the lens mounting base (4); and the image sensor (11) is disposed on the light-emitting side of the lens (12).

17. A terminal device, characterized in that, It includes a housing (102) and a camera module (1) as described in claim 16, wherein the camera module (1) is mounted on the housing (102).

Images