A large-load large-stroke OIS motor structure

Abstract

This invention relates to a high-load, long-stroke OIS motor structure, comprising a housing, a first support member, a second support member, and a lens mount. A hollow cavity is formed within the housing, housing a lens module. The first support member, disposed within the hollow cavity, is movable perpendicular to the optical axis and includes a first fulcrum member and a second fulcrum member with mutually perpendicular movement directions. The second support member is connected to the first support member and is movable perpendicular to the optical axis, with a third fulcrum member positioned between it and the base. The center of gravity of the second support member is positioned close to the third fulcrum member to increase contact friction. The lens mount, disposed within the second support member, is movable along the optical axis. This invention, through the synergistic effect of the first, second, and third support members, optimizes the center of gravity distribution and friction control of the support structure, solving the motion crosstalk problem caused by traditional structures, and offering advantages in improved motion stability and image stabilization accuracy.

Description

Technical Field

[0001] This invention relates to the field of optical imaging, and more particularly to a structure for an OIS motor with high load and long stroke. Background Technology

[0002] As consumers' demand for mobile phone photography increases, the functions of mobile phone cameras (i.e., camera modules) are becoming more and more abundant. Features such as portrait shooting, telephoto shooting, optical zoom, and optical image stabilization are all integrated into cameras with limited space. Among them, autofocus and optical image stabilization often rely on optical actuators (or motors) to achieve these functions.

[0003] Autofocus (AF) works by utilizing the principle of light reflection from an object. The reflected light is received by the camera's CCD sensor, processed by a computer, and then drives the motorized focusing mechanism to achieve focus. Optical image stabilization (OIS) refers to the use of optical components, such as lens settings, in cameras or other similar imaging instruments to avoid or reduce camera shake during the capture of optical signals, thereby improving image quality. OIS achieves this by employing special lens or CCD sensor structures to minimize image instability caused by operator movement.

[0004] As the image quality requirements for mobile phone camera modules become increasingly demanding, the size and weight of lenses are also increasing, placing greater demands on the driving force of motors. However, current electronic devices (such as mobile phones) are subject to significant size constraints on camera modules, and the motor's footprint increases accordingly with the lens's size. In other words, while lenses are trending towards larger size and greater weight, the driving force provided by the motor cannot be increased proportionally. With limited driving force, a heavier lens results in a shorter distance the motor can move the lens, affecting focusing and image stabilization capabilities. Furthermore, a heavier lens means a slower speed at which the motor can move the lens, and a longer time for the lens to reach the intended compensation position, which also impacts focusing and image stabilization performance.

[0005] Optical image stabilization typically requires the lens module to move along a direction perpendicular to the optical axis, such as movement along the X and Y axes in the XY plane. While existing dual-ball bearing structures can effectively guide the lens along the X and Y axes, they inevitably suffer from crosstalk. This means that movement along the X axis may be accompanied by movement along the Y axis simultaneously. Due to the physical coupling of the mechanical structure, the inertia or vibration generated by the X-axis movement may be transmitted to the Y axis through the structure, thus reducing the accuracy of the movement and affecting the image stabilization effect. Because the rolling friction of existing dual-ball bearing structures is low, they are easier to drive, which reduces the driving force required, but the crosstalk problem becomes more severe. Existing technologies generally use coils and magnets for driving, but the magnetic force decays rapidly with increasing distance, resulting in insufficient thrust, especially at long strokes, where the thrust drops rapidly and linearity is poor. This has led to a preference in existing technologies for using low-friction ball bearings for guidance to reduce the thrust requirement and thus ensure the requirements for long stroke and linearity. Summary of the Invention

[0006] To address the aforementioned problems in the prior art, the present invention provides a high-load, long-stroke OIS motor structure.

[0007] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] A high-load, long-stroke OIS motor structure includes:

[0009] The housing has a hollow cavity inside and a lens module is installed therein;

[0010] The image stabilization bracket, housed within a hollow cavity, is configured to move along the direction of vibration.

[0011] The lens mount is located within the image stabilization bracket and can move along the focusing direction;

[0012] The shaking direction includes a first direction and a second direction that are perpendicular to each other;

[0013] The focusing direction is perpendicular to both the first direction and the second direction;

[0014] The bottom of the anti-shake bracket is supported on the base by several first fulcrum components;

[0015] The image stabilization bracket includes a first support component and a second support component;

[0016] The second support member is supported on the first support member by a plurality of second fulcrum members;

[0017] The first support member is supported on the base by a plurality of first fulcrum members;

[0018] The second support member is disposed above the first support member, and the second support member and the first support member are disposed opposite to each other in the focusing direction;

[0019] A third fulcrum member is provided between the second support member and the base;

[0020] The third fulcrum member remains in a fixed position relative to one of the second support member and the base, while allowing the other of the second support member and the base to move relative to the third fulcrum member;

[0021] The center of gravity of the second support member is positioned close to the third fulcrum member to increase the friction between the third fulcrum member and the second support member.

[0022] In one embodiment of the present invention, the housing includes an outer shell and a base;

[0023] The bottom opening of the outer shell is fixedly connected to the base to form a hollow cavity inside;

[0024] A light-transmitting hole is formed in the middle of the outer shell and the base;

[0025] The bottom of the first support member is provided with a plurality of slots facing the base and the guide of the first slide groove is parallel to the second direction;

[0026] The top of the base is recessed with a corresponding base limiting groove at a position relative to each of the first sliding grooves. The first sliding groove and the base limiting groove cooperate to form a first guide space for clamping and rotatably accommodating the first fulcrum member.

[0027] The top of the first support member is provided with a number of slots facing the second support member, and the guide of the second slide groove is parallel to the first direction;

[0028] The bottom of the second support member is provided with a corresponding third slide groove at a position relative to each of the second slide grooves, and the guide of the third slide groove is parallel to the first direction;

[0029] The second slide groove cooperates with the third slide groove to form a second guide space for clamping and rotatably accommodating the second fulcrum member.

[0030] In one embodiment of the present invention, a disturbance compensation drive unit for driving the movement of the second support member is provided between the second support member and the housing;

[0031] The disturbance compensation drive unit includes a first magnet and a second magnet disposed on adjacent sides of the second support member, and a flexible circuit board disposed on the top upper surface of the base in cooperation with the first magnet and the second magnet.

[0032] The flexible circuit board is electrically connected to a first coil that cooperates with the first magnet and a second coil that cooperates with the second magnet.

[0033] The first magnet is positioned above the first coil, and the first magnet and the first coil are positioned opposite each other along the focusing direction, with the plane of the first coil being parallel to the shaking direction;

[0034] The second magnet is positioned above the second coil, and the second magnet and the second coil are positioned opposite each other along the focusing direction, with the plane of the second coil being parallel to the shaking direction;

[0035] An automatic focusing drive unit is provided between the lens mount and the second support member to drive the movement of the lens mount;

[0036] The autofocus drive unit includes a third magnet and a third coil;

[0037] The third magnet is fixed on the outer surface of the lens mount, the third coil is fixed on the inner surface of the second support member, the third magnet and the third coil are arranged opposite to each other along the first direction or the second direction, and the plane of the third coil is parallel to the focusing direction.

[0038] The first magnet, the second magnet, and the third magnet all use a Heilbeck magnetic array.

[0039] In one embodiment of the present invention, the lens mount moves along the focusing direction within the hollow cavity via an autofocus guide;

[0040] The second support member is provided with a first limiting groove that mates with the automatic focusing guide;

[0041] The lens mount has a second limiting groove on its outer side that is positioned relative to the first limiting groove.

[0042] The first limiting groove and the second limiting groove are arranged opposite to each other along the first direction or the second direction;

[0043] The first limiting groove and the second limiting groove cooperate to form a third guiding space for clamping and rotatably accommodating the automatic focusing guide;

[0044] The autofocus guide and the autofocus drive are disposed on the same side of the lens mount;

[0045] A magnetically conductive sheet that cooperates with the third magnet is fixed on the lens mount;

[0046] A magnetic attracting sheet is fixed on the outer side of the second support member, spaced apart from the third magnet;

[0047] The third magnet and the magnetic absorber are arranged opposite to each other along the first direction or the second direction;

[0048] The third magnet works in conjunction with the magnetic absorber to use magnetic force to make the lens mount abut against the autofocus guide.

[0049] In one embodiment of the present invention, the third fulcrum component is a spherical component or a hemispherical component;

[0050] The second support member is provided with a support surface that abuts against the third fulcrum member so that the support surface can move relative to the third fulcrum member;

[0051] The base has a support plate formed at a position relative to the third fulcrum member;

[0052] The support plate is provided with a limiting hole that cooperates with the third fulcrum component;

[0053] When the third fulcrum component is engaged with the limiting hole, the position of the third fulcrum component relative to the base remains unchanged.

[0054] In one embodiment of the present invention, the second support member is provided with a support surface that cooperates with the third fulcrum member so that the support surface can move relative to the third fulcrum member.

[0055] The base has a support plate formed at a position relative to the third fulcrum member;

[0056] The distance between the support surface and the support plate is less than the distance between the third groove and the support plate.

[0057] In one embodiment of the present invention, the second support member includes a corner portion located between the first magnet and the second magnet;

[0058] The base has a support plate formed at a position relative to the third fulcrum member;

[0059] The corner portion has a support surface formed on its end face relative to the support plate, which cooperates with the third fulcrum member so that the support surface can move relative to the third fulcrum member.

[0060] In one embodiment of the present invention,

[0061] The second support member is equipped with a flexible circuit board;

[0062] The flexible circuit board is electrically connected to the third coil;

[0063] One end of the flexible circuit board is connected to the base;

[0064] The housing is provided with at least one multi-directional anti-collision soft rubber component;

[0065] The multi-directional anti-collision soft rubber part is formed by an anti-collision soft rubber base, a first anti-collision rubber base and a second anti-collision rubber base;

[0066] The first anti-collision rubber platform and the second anti-collision rubber platform are both located on the same side of the anti-collision soft rubber base;

[0067] The ends of the first anti-collision rubber platform and the ends of the second anti-collision rubber platform are both extended along the optical axis with the surface of the anti-collision soft rubber base near the lens module as the same reference, and the end of the first anti-collision rubber platform is higher than the end of the second anti-collision rubber platform.

[0068] One end of the first anti-collision rubber platform is formed on the surface of the anti-collision soft rubber base near the lens module, and the other end of the first anti-collision rubber platform passes through the housing and is disposed relative to the second support member, so that the second support member can achieve anti-collision function in the X, Y and Z axis directions;

[0069] One end of the second anti-collision rubber platform is formed on the surface of the anti-collision soft rubber base near the lens module, and the other end of the second anti-collision rubber platform passes through the housing and is disposed relative to the lens mount, so that the lens mount can achieve anti-collision function in the Z-axis direction;

[0070] The second support member is provided with a receiving groove that mates with the first anti-collision rubber platform.

[0071] In one embodiment of the present invention, a flexible circuit board is fixed on the outer side of the second support member;

[0072] The flexible circuit board is electrically connected to the third coil;

[0073] Several vibration-absorbing springs are fixedly connected to the second support member;

[0074] The vibration-absorbing spring is connected to the base via a hanging ring line;

[0075] When the second support member is in its initial position, the lifting ring line is in a bent state;

[0076] The flexible circuit board is electrically connected to the vibration-absorbing spring.

[0077] The beneficial effects of this invention are: by setting the synergistic effect of the first support member, the second support member and the third fulcrum member, the center of gravity distribution and friction control of the support structure are optimized, the motion crosstalk problem caused by the traditional structure is solved, and the advantages of improving motion stability and anti-shake accuracy are achieved. Attached Figure Description

[0078] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0079] Figure 1 The structure of this invention explodes. Figure 1 ;

[0080] Figure 2 The structure of this invention explodes. Figure 2 ;

[0081] Figure 3 This is a top view of the structure of the present invention;

[0082] Figure 4 yes Figure 3 AA section diagram;

[0083] Figure 5 yes Figure 3 Middle BB section view;

[0084] Figure 6 yes Figure 5 Enlarged diagram of section C;

[0085] Figure 7 The structure of this invention explodes. Figure 3 ;

[0086] Figure 8 yes Figure 7 Enlarged schematic diagram of section D in the middle.

[0087] Explanation of reference numerals in the attached figures:

[0088] 100. Housing; 101. Light-transmitting hole; 102. Support plate; 103. Limiting hole; 104. Third fulcrum component; 105. Base limiting groove; 110. Base; 120. Outer shell; 121. First anti-collision rubber platform; 122. Second anti-collision rubber platform; 123. Anti-collision soft rubber base; 200. First support component; 210. Disturbance compensation drive unit; 211. First coil; 212. First magnet; 213. Second coil; 214. Second magnet; 220. First fulcrum component; 230. First slide rail; 240, second fulcrum component; 250, second slide rail; 300, second support component; 310, autofocus drive unit; 311, third coil; 312, third magnet; 320, corner; 330, third slide rail; 340, flexible circuit board; 341, magnetic absorber; 350, first limiting groove; 360, support surface; 370, receiving groove; 380, vibration damping spring; 390, lifting ring line; 400, lens mount; 410, autofocus guide; 420, second limiting groove. Detailed Implementation

[0089] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0090] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for 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 invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0091] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0092] See the example. Figure 1-7 As shown:

[0093] like Figure 1 As shown, the optical axis direction (Z-axis direction) refers to the vertical direction of the lens module (not shown in the figure), and the X-axis and Y-axis directions refer to directions perpendicular to the optical axis direction (Z-axis direction). These definitions are for illustrative purposes only and do not limit the scope of the claims. The directions described above and shown in the figures are examples and may, of course, differ based on implementation and use.

[0094] In existing technologies, optical image stabilization motors (OIMs) often face a conflict between driving force and friction when driving heavy-load lens modules with long strokes. While traditional dual-layer ball bearing structures can guide motion along the X and Y axes, mechanical coupling causes inertial vibrations from movement in one axis to be transmitted to the other, leading to motion crosstalk. Furthermore, the magnetic driving force attenuates significantly during long strokes, reducing thrust linearity and affecting lens positioning accuracy. For example, in mobile phone camera modules, as lens weight increases, motor stroke shortens, reducing image stabilization compensation speed and making it difficult to meet high-resolution imaging requirements.

[0095] To address the aforementioned issues, a support structure is needed that can maintain low-friction motion characteristics while suppressing motion crosstalk. Traditional solutions reduce driving force requirements by comprehensively lowering frictional resistance, but this exacerbates the transmission of inertial vibrations. Therefore, we consider introducing controllable frictional damping at specific locations to maintain overall low-friction characteristics while suppressing vibration transmission through local damping. Further investigation reveals that motion crosstalk primarily originates from the coupling of degrees of freedom within the support structure, necessitating the construction of an orthogonally decoupled guiding system. Simultaneously, large-stroke motion requires a controllable attenuation rate of the driving force, necessitating optimization of the matching relationship between the magnetic force direction and the motion path.

[0096] Therefore, this application proposes a high-load, long-stroke OIS motor structure, such as... Figure 1-2As shown, the system includes a housing 100, a first support member 200, a second support member 300, and a lens mount 400. The housing 100 has a hollow cavity and houses the lens module. The housing 100 is formed by a fixed connection between an outer shell 120 and a base 110, and has a light-transmitting hole 101 in the center. The first support member 200 is disposed within the hollow cavity and can move along the shaking direction, i.e., along the X and Y axes. The second support member 300 is connected to the first support member 200 and can move along the shaking direction. The lens mount 400 is disposed inside the second support member 300 and can move along the focusing direction, i.e., along the Z-axis. The focusing direction is perpendicular to the shaking direction. The second support member 300 is positioned above the first support member 200, and the second support member 300 and the first support member 200 are positioned opposite each other in the focusing direction. The first support member 200 includes a plurality of first fulcrum members 220; in one embodiment, four first fulcrum members 220 are generally provided. A third fulcrum member 104 is provided between the second support member 300 and the base 110; the third fulcrum member 104 remains in a fixed position relative to one of the second support member 300 and the base 110, and allows the other of the second support member 300 and the base 110 to move relative to the third fulcrum member 104; the center of gravity of the second support member 300 is set close to the third fulcrum member 104 to increase the friction between the third fulcrum member 104 and the second support member 300, and the lens mount 400 is disposed within the second support member 300 and can move along the optical axis.

[0097] The housing 100 refers to a structure composed of an outer shell 120 and a base 110. The bottom opening of the outer shell 120 is fixed to the base 110 by welding, gluing, or snap-fit ​​connection, forming a space to accommodate the moving components. Specifically, it can be made of die-cast aluminum alloy or injection molded. The diameter of its light-transmitting hole 101 can be adapted to different specifications of lens modules. The first support member 200 refers to a motion platform with orthogonal guiding function. The movement directions of the first fulcrum member 220 and the second fulcrum member 240 are orthogonal. For example, a ball bearing can be used as a fulcrum member to constrain the degrees of freedom in the X and Y axes, respectively. The second support member 300 refers to a secondary motion platform that supports the lens mount 400. It forms a single-point contact with the base 110 through a third fulcrum member 104. The third fulcrum member 104 can be a ball joint structure. When the center of gravity of the second support member 300 is close to the contact point, the normal pressure on the contact surface increases, thereby increasing the friction. The lens mount 400 refers to the carrier for mounting the lens module, which achieves axial movement through the autofocus drive unit 310.

[0098] Specifically, the housing 100 provides a stable mounting reference for the multi-layered motion components, and the light-transmitting aperture 101 ensures that the optical path is not disturbed by motion. The first support member 200 forms a decoupled guide through orthogonally distributed fulcrum members. When moving in the X-axis direction, the first fulcrum member 220 slides along its guide groove, while the second fulcrum member 240 remains stationary in the vertical direction, thereby blocking the transmission of inertial force to the Y-axis. The second support member 300 forms a single-point connection with the base 110 through the third fulcrum member 104. The frictional damping generated at this contact point can suppress residual vibration, and since the other fulcrums maintain low frictional characteristics, the overall motion resistance remains at a low level. When the second support member 300 is driven to move, the pressure generated by the shift in the center of gravity increases the pressure on the contact surface of the third fulcrum member 104, forming an adaptive friction adjustment mechanism. Understandably, traditional double-layer ball bearing structures typically have four balls per layer, with all four balls rolling in the same direction. The balls in different layers move perpendicularly, and the weight is evenly distributed across the carrier to ensure each ball moves in the same direction. When the carrier moves along the X-axis, the balls in the X-axis direction move smoothly. Although the balls moving along the Y-axis are limited to the Y-axis by guide grooves, the vibration / inertia generated by the X-axis movement can easily break the static state in the Y-axis direction, resulting in unintended movement. This is because the friction between the balls and the contact surfaces is very small, resulting in weak suppression of movement. However, by increasing friction at a single point in this invention, the suppression of unintended movement can be effectively increased. Unintended movement requires greater disturbance to achieve, thus reducing / avoiding the impact of crosstalk. During normal expected movement, the balls still experience rolling friction with the support components, which has a relatively small impact on the movement.

[0099] The lens mount 400 moves along the optical axis inside the second support member 300 to achieve autofocus. Its movement path is spatially orthogonal to the image stabilization compensation movement, thus avoiding motion interference.

[0100] Compared to existing technologies, the two motion planes of a traditional double-layer ball bearing architecture are connected by the same type of fulcrum, resulting in the axial transmission of vibrational energy. This solution separates the degrees of freedom of motion through orthogonal fulcrum components, combined with a single-point friction damping design, effectively suppressing transaxial inertial coupling while maintaining low-friction motion characteristics. In existing technologies, the drive coil is typically arranged parallel to the motion plane, leading to significant changes in the magnetic gap during long strokes. This solution positions the drive magnet and coil along the optical axis, aligning the magnetic force direction with the motion direction and reducing the thrust attenuation gradient.

[0101] Through the above technical solutions, this application solves the problem of balancing driving force and frictional resistance under heavy loads. While maintaining long-stroke motion capability, it suppresses motion crosstalk through local frictional damping. The orthogonal guide structure reduces mechanical coupling between axes, making the X-axis and Y-axis movements independent. The adaptive friction adjustment mechanism of the third fulcrum component 104 effectively absorbs residual vibration energy without significantly increasing the overall frictional resistance. The layout of the magnets along the optical axis improves the linearity of the thrust, ensuring controllable attenuation of the driving force during long-stroke movement, and improving lens positioning accuracy and image stabilization response speed.

[0102] In one embodiment of the present invention, the bottom of the first support member 200 is provided with a plurality of first sliding grooves 230 facing the base 110, and the guide of the first sliding grooves 230 is parallel to the second direction; the top of the base 110 is respectively recessed with a corresponding base limiting groove 105 at a position relative to each of the first sliding grooves 230, and the first sliding grooves 230 and the base limiting grooves 105 cooperate to form a first guide space for clamping and rotatably accommodating the first fulcrum member 220; the top of the first support member 200 is provided with a plurality of second sliding grooves 250 facing the second support member 300, and the guide of the second sliding grooves 250 is parallel to the first direction; the bottom of the second support member 300 is respectively provided with a corresponding third sliding groove 330 at a position relative to each of the second sliding grooves 250, and the guide of the third sliding groove 330 is parallel to the first direction; the second sliding grooves 250 and the third sliding grooves 330 cooperate to form a second guide space for clamping and rotatably accommodating the second fulcrum member 240. In one embodiment, the first fulcrum member 220 and the second fulcrum member 240 are ball bearings; in another embodiment, three first fulcrum members 220 and three second fulcrum members 240 are provided; correspondingly, three first slide grooves 230, three second slide grooves 250, three third slide grooves 330, and three base limiting grooves 105 are provided. In this embodiment, the base limiting groove 105 can be a V-shaped guide groove.

[0103] The first groove 230 refers to a guide groove disposed on the bottom surface of the first support member 200 perpendicular to the optical axis, with its extension direction parallel to the Y-axis. Specifically, it can be a U-shaped groove or a V-shaped groove structure, used to constrain the rolling trajectory of the ball in the Y-axis direction. The base limiting groove 105 refers to a groove on the surface of the base 110 corresponding to the first groove 230, with its extension direction consistent with the first groove 230, forming a Y-axis guide channel for the ball through cooperation. In one embodiment, all three first grooves 230 can be configured as U-shaped grooves or V-shaped grooves, thereby achieving effective limiting of the ball. In another embodiment, two of the three first grooves 230 can be configured as U-shaped grooves or V-shaped grooves, and the other can be configured as a rectangular groove. The width of the rectangular groove is greater than the diameter of the ball, meaning the rectangular groove does not guide the movement of the ball, while the other two U-shaped or V-shaped grooves provide movement guidance. This configuration aims to reduce assembly difficulty and the precision requirements of the components, while ensuring effective guidance of the ball in the Y-axis direction.

[0104] The second groove 250 is a guide groove perpendicular to the optical axis and located on the top surface of the first support member 200. Its extension direction is parallel to the X-axis, and it is used to constrain the rolling trajectory of the ball in the X-axis direction. The third groove 330 is a groove on the second support member 300 corresponding to the second groove 250. Its extension direction is consistent with the second groove 250, and they cooperate to form an X-axis guide channel for the ball. The ball acts as a fulcrum member, its spherical surface contacting the groove reduces motion resistance through rolling friction. Simultaneously, the sidewalls of the groove limit the ball, preventing deviation from the direction of movement. In one embodiment, two of the three second grooves 250 can be configured as U-shaped grooves or V-shaped grooves, and the other can be configured as a rectangular groove. The width of the rectangular groove is greater than the diameter of the ball, that is, the rectangular groove does not guide the movement of the ball, but the movement is guided by the other two U-shaped grooves or V-shaped grooves. The purpose of this configuration is to reduce the assembly difficulty and the precision requirements of the components, while ensuring effective guiding of the ball in the X-axis direction. Similarly, the third groove 330 and / or the base limiting groove 105 can also adopt any of the above configuration methods.

[0105] Specifically, the parallel arrangement of the first slide groove 230 and the base limiting groove 105 allows the balls to move only along the Y-axis, while the parallel arrangement of the second slide groove 250 and the third slide groove 330 allows another set of balls to move only along the X-axis. The guiding directions of the two sets of slide grooves are orthogonally distributed, forming physically isolated independent guiding systems for the X and Y axes. The three-point support structure forms stable triangular support surfaces in the X and Y axes respectively through the three balls. Combined with the support of the third fulcrum member 104, the motion freedom of the second support member 300 in the XY plane is precisely restricted, eliminating the motion coupling between the X and Y axes. The rolling motion of the balls in the slide groove can meet the requirements of large stroke movement, and the constraint effect of the slide groove sidewall can suppress motion crosstalk and ensure the linearity of the movement direction. Since the center of gravity of the second support member 300 is close to the third fulcrum member 104, the friction between it and the base 110 increases, further suppressing motion crosstalk caused by vibration and offset during movement.

[0106] In one embodiment of the present invention, a disturbance compensation drive unit 210 for driving the movement of the second support member 300 is provided between the second support member 300 and the housing 100. The drive unit includes a first magnet 212 and a second magnet 214 located on adjacent sides of the second support member 300, and a flexible circuit board 340 disposed on the top upper surface of the base 110 cooperating with the first magnet 212 and the second magnet 214. A first coil 211 cooperating with the first magnet 212 and a second coil 213 cooperating with the second magnet 214 are electrically connected to the flexible circuit board 340. The first magnet 212 is disposed above the first coil 211, and the first magnet 212 and the first coil 211 are disposed opposite each other along the focusing direction, and the plane of the first coil 211 is parallel to the shaking direction. The second magnet 214 is disposed above the second coil 213, and the second magnet 214 and the second coil 213 are disposed opposite each other along the focusing direction, and the plane of the second coil 213 is parallel to the shaking direction.

[0107] An autofocus drive unit 310 is provided between the lens mount 400 and the second support member 300. This unit includes a third magnet 312 on the side of the lens mount 400 and a third coil 311 on the second support member 300. The third magnet 312 is fixed to the outer surface of the lens mount 400, and the third coil 311 is fixed to the inner surface of the second support member 300. The third magnet 312 and the third coil 311 are arranged opposite each other along the first direction or the second direction, and the plane of the third coil 311 is parallel to the focusing direction. The first magnet 212, the second magnet 214, and the third magnet 312 all employ a Heilbeck magnetic array.

[0108] The disturbance compensation drive unit 210 is a component that drives the second support member 300 to perform anti-shake compensation movement through the electromagnetic interaction of magnets and coils. Specifically, it can be implemented using a double-sided magnet and coil structure. By independently controlling the magnetic field changes in the X and Y axes, magnetic circuit coupling between movement directions is reduced. The autofocus drive unit 310 is a component that drives the lens mount 400 to move along the optical axis through the electromagnetic interaction of magnets and coils. Specifically, it can be implemented using a magnet-coil pair orthogonal to the anti-shake drive direction, creating spatial isolation between the magnetic field directions of the focusing drive and the anti-shake drive. The Helbeck magnetic array is a permanent magnet array with a specific magnetic pole arrangement. Specifically, it can be implemented using a structure with a single-sided strong magnetic field distribution. By optimizing the magnetic pole arrangement, the effective magnetic flux is enhanced, and magnetic force attenuation during large-stroke movement is reduced.

[0109] Specifically, in the disturbance compensation drive unit 210, the first magnet 212 and the first coil 211, and the second magnet 214 and the second coil 213 are arranged parallel to each other along the optical axis. When the second support member 300 moves along the X-axis or Y-axis, the distance between the magnet and the coil remains constant, avoiding nonlinear attenuation of magnetic force due to displacement changes. In the autofocus drive unit 310, the third magnet 312 and the third coil 311 are arranged perpendicular to the optical axis. Through orthogonal arrangement, a magnetic field perpendicular to the anti-shake drive direction is formed, achieving physical isolation between focusing motion and anti-shake motion. The Helbeck magnetic array, by alternately arranging magnetic poles in different directions, forms a high-intensity magnetic field on one side of the magnet, ensuring that the coil is always in a high magnetic flux density region during movement, thereby maintaining the linear characteristics of the thrust.

[0110] Through the above technical solutions, the problem of insufficient driving force under large loads and long strokes is solved. The constant spacing between the magnet and the coil, combined with the high magnetic flux characteristics of the Helbeck magnetic array, ensures that the thrust remains linear during long-stroke movement. Crosstalk between motion directions is eliminated by increasing the friction at the third fulcrum component 104. The magnetic field directions of the anti-shake drive and the focusing drive are spatially isolated to avoid motion interference. The thrust reduction caused by magnetic force attenuation is suppressed by optimizing the magnetic pole arrangement, and the single-sided strong magnetic field design keeps the effective magnetic flux density stable during movement.

[0111] In one embodiment of the present invention, the lens holder 400 moves along the optical axis in the hollow cavity via the autofocus guide 410. The second support member 300 is provided with a first limiting groove 350 that cooperates with the autofocus guide 410. The outer side of the lens holder 400 is provided with a second limiting groove 420 that is disposed opposite to the first limiting groove 350. The first limiting groove 350 and the second limiting groove 420 are disposed opposite to each other along the first direction or the second direction. The first limiting groove 350 and the second limiting groove 420 cooperate to form a third guiding space for clamping and rotatably accommodating the autofocus guide 410. The autofocus guide 410 and the autofocus drive unit 310 are disposed on the same side of the lens holder 400. The autofocus guide 410 is a ball bearing assembly.

[0112] The autofocus guide 410 is a mechanical component used to constrain the movement of the lens mount 400 along the optical axis. Specifically, it can be implemented using a ball bearing group composed of densely arranged balls, dispersing the motion load and reducing frictional resistance through multi-point contact. The first limiting groove 350 and the second limiting groove 420 are guide structures respectively provided on the second support member 300 and the lens mount 400. Specifically, they can be implemented using U-shaped or V-shaped grooves, forming a closed-loop constraint path by clamping the guide, thus restricting the degree of freedom of movement of the lens mount 400. The autofocus drive unit 310 and the autofocus guide 410 are arranged on the same side, meaning that the drive assembly of the third magnet 312 and the third coil 311 is located on the same side of the lens mount 400 as the autofocus guide 410, shortening the magnetic force transmission path and reducing torque interference.

[0113] Specifically, when the autofocus drive unit 310 is energized and generates magnetic force, the third magnet 312 interacts with the third coil 311 to drive the lens mount 400 to move along the optical axis. At this time, the autofocus guide 410, held between the first limiting groove 350 and the second limiting groove 420, guides the lens mount 400 to move only along a single axis through rolling or sliding contact, avoiding deflection or crosstalk caused by the lateral component force of the drive unit. When a cylinder or ball bearing is used as the guide, its multi-point contact characteristics can evenly distribute the dynamic load during the movement of the support, preventing wear or jamming caused by local stress concentration, while maintaining low friction characteristics to meet the requirements of large stroke movement.

[0114] In one embodiment of the present invention, a magnetic sheet (not shown in the figure) that cooperates with the third magnet 312 is fixed on the lens holder 400, and a magnetic attracting sheet 341 that is spaced apart from the third magnet 312 is fixed on the outside of the second support member 300. The third magnet 312 and the magnetic attracting sheet 341 cooperate to use magnetic force to make the lens holder 400 abut against the automatic focusing guide 410.

[0115] The magnetic conductive sheet, specifically a thin metal sheet with magnetic properties, can be made of an iron-nickel alloy. Its function is to effectively attract the third magnet 312, thus pre-fixing the third magnet 312 to the lens holder 400. To ensure effective fixation of the third magnet 312 to the lens holder 400, adhesive can also be used. The magnetic attracting sheet 341, also made of an iron-nickel alloy, generates magnetic attraction with the third magnet 312, forming a bidirectional magnetic constraint. The third magnet 312 is a Helbeck magnetic array structure, specifically implemented using a multi-pole magnetization method. Its function is to work in conjunction with the magnetic conductive sheet and the magnetic attracting sheet 341 to form a non-contact magnetic clamping mechanism. The autofocus guide 410 is a ball bearing structure, specifically made of stainless steel balls, which provides sliding guidance for the lens holder 400 along the optical axis.

[0116] Specifically, the magnetic guide plate is fixed inside the lens holder 400, forming a magnetic circuit coupling with the third magnet 312. This allows the magnetic lines of force of the third magnet 312 to form a closed loop through the magnetic guide plate, enhancing the concentration of the magnetic field. The magnetic attracting plate 341 is fixed to the outside of the second support member 300, generating a magnetic attraction force between itself and the third magnet 312. This magnetic attraction force presses the lens holder 400 against the autofocus guide member 410. When the autofocus drive unit 310 operates, the interaction between the third coil 311 and the third magnet 312 generates a driving force, pushing the lens holder 400 to move along the optical axis. During this process, the bidirectional magnetic constraint formed by the magnetic guide plate and the magnetic attracting plate 341 counteracts the displacement deviation caused by inertia or external vibration, ensuring that the lens holder 400 remains tightly against the autofocus guide member 410, preventing the generation of sliding gaps.

[0117] In one embodiment of the present invention, the third fulcrum member 104 is configured as a spherical member or a hemispherical member, and the second support member 300 is provided with a support surface 360 ​​that abuts against the third fulcrum member 104 so that the support surface 360 ​​can move relative to the third fulcrum member 104. The base 110 is formed with a support plate 102 at a position relative to the third fulcrum member 104. The support plate 102 is provided with a limiting hole 103 that cooperates with the third fulcrum member 104. When the third fulcrum member 104 cooperates with the limiting hole 103, the position of the third fulcrum member 104 relative to the base 110 remains unchanged.

[0118] Among them, the spherical component or hemispherical component refers to a rigid support element with a spherical contact surface. Specifically, it can be made of metal or ceramic materials to form a hemispherical or spherical structure, and its function is to provide low-resistance sliding friction through point contact. The support surface 360 ​​refers to a plane with a certain hardness, which can be a hard plastic end face. It can be a metal plate fixedly connected to the second support component 300, or the rigidity of the plastic end face can be increased by embedding metal parts. It can be understood that the embedded metal parts are metal plate structures injected into the support surface 360 ​​through an injection molding process. At this time, the support surface 360 ​​is still a plastic end face, but a metal plate is injected inside. The distance between the metal plate and the plastic end face is small, thereby strengthening the rigidity of the plastic end face and reducing deformation. Alternatively, conventional surface hardening treatment processes can be used to construct a metal or non-metal support surface 360 ​​to form a sliding / rolling contact interface with the spherical component to generate controllable friction. The limiting hole 103 refers to an annular groove, conical hole, or multi-faceted groove with an inner diameter slightly smaller than the diameter of the spherical component. It can be specifically processed using stamping or precision injection molding. It is used to constrain the displacement freedom of the spherical component, allowing it to rotate only around a fixed fulcrum. It should be noted that when the third fulcrum component 104 is a hemispherical component, it typically cannot rotate and is generally set as a fixed structure; or it can only rotate around a numerical center axis. In one embodiment, the third fulcrum component 104 can be fixedly connected to the base 110 or the second support component 300 to form an integral structure; for example, in one embodiment, the third fulcrum component 104 and the base 110 are an integral structure, and the third fulcrum component 104 is a raised hemispherical shape.

[0119] Specifically, the ball component forms a fixed fulcrum after being mechanically constrained by the limiting hole 103. The second support component 300 achieves planar motion through the sliding contact between the support surface 360 ​​and the ball component. When the second support component 300 is subjected to a driving force, sliding friction is generated between the support surface 360 ​​and the ball component. This friction is in the opposite direction to the direction of motion, which can effectively suppress inertial displacement in the non-driving direction. It should be noted that since the ball component is constrained by the limiting hole 103, there are multiple contact points between the limiting hole 103 and the ball component, which increases the difficulty of the ball component rolling. It is more likely to remain stationary, and there is sliding friction between the support surface 360 ​​and the third fulcrum component 104. In some cases, the ball component may rotate, and there will be rolling friction between the support surface 360 ​​and the third fulcrum component 104. When the third fulcrum component 104 is a hemispherical component, there is always sliding friction between the support surface 360 ​​and the third fulcrum component 104. The sliding friction is greater than the rolling friction, which enhances the ability to suppress crosstalk. By increasing the connection between the limiting hole 103 and the ball component... The increased contact area can further suppress the probability of the ball component rolling, and those skilled in the art can make appropriate adjustments according to their needs. It should be further noted that regardless of whether the friction between the third fulcrum component 104 and the support surface 360 ​​is rolling or sliding friction, crosstalk can be suppressed. This is because the increased normal pressure at the third fulcrum component 104 inevitably leads to increased friction, which also increases the maximum static friction. In other words, generating unexpected motion (crosstalk) requires overcoming a greater maximum static friction. With the expected motion remaining unchanged, unexpected motion (crosstalk) caused by inertia / vibration is even less likely to occur. The support plate 102, as the core load-bearing component of the base 110, forms a rigid connection with the ball component through the interference fit of the limiting hole 103, ensuring that the fulcrum position does not shift during movement.

[0120] Compared to existing technologies, traditional solutions using a double-layer ball bearing guide structure have a rolling friction coefficient of only 0.001-0.003, making moving parts susceptible to crosstalk displacement due to inertial forces / vibrations. In one embodiment of the present invention, the friction coefficient can be increased to the order of 0.1-0.3 through sliding contact between the ball component and the support surface 360, resulting in a damping effect of more than ten times under the same driving force conditions.

[0121] Through the above technical solution, this application effectively solves the motion crosstalk problem caused by the instability of the fulcrum in large stroke motion, suppresses vibration in the non-driving direction by utilizing the damping effect generated by sliding friction / maximum static friction, and ensures the linearity of the motion trajectory by using a fixed fulcrum structure.

[0122] like Figure 4As shown, in one embodiment of the present invention, the second support member 300 is provided with a support surface 360 ​​that cooperates with the third fulcrum member 104 so that the support surface 360 ​​can move relative to the third fulcrum member 104. The base 110 is formed with a support plate 102 at a position relative to the third fulcrum member 104. The distance between the support surface 360 ​​and the support plate 102 is less than the distance between the third slide groove 330 and the support plate 102.

[0123] The support surface 360 ​​refers to the planar area on the second support member 300 that directly contacts the third fulcrum member 104. It is a plane with a certain degree of hardness, which can be a rigid plastic end face. It can also be a metal plate fixedly connected to the second support member 300, or it can increase the rigidity of the plastic end face by embedding metal parts. This means that the embedded metal parts are metal plate structures injection-molded into the support surface 360 ​​through an injection molding process. In this case, the support surface 360 ​​is still a plastic end face, but it contains an internally injection-molded metal plate. The distance between the metal plate and the plastic end face is small, thereby strengthening the rigidity of the plastic end face and reducing deformation. Alternatively, conventional surface hardening processes can be used to construct the metal or non-metal support surface 360, which generates friction through contact to suppress movement deviation. The third fulcrum member 104 refers to the support element located between the base 110 and the second support member 300. Specifically, it can be implemented using spherical balls or hemispherical protrusions to provide single-point contact and allow relative sliding / rolling. The support plate 102 refers to the rigid component in the base 110 that supports the third fulcrum member 104, and is used to fix the position of the third fulcrum member 104 and form a height difference constraint. The third groove 330 refers to the guide groove on the second support member 300 for accommodating the second fulcrum member 240. Specifically, it can be implemented by adopting a straight groove structure, and is used to restrict the degree of freedom of movement of the second support member 300 in a specific direction.

[0124] Specifically, when the second support member 300 moves under the driving action, the maximum static friction between its support surface 360 ​​and the third fulcrum member 104 is greater. Since the distance between the support surface 360 ​​and the support plate 102 is designed to be smaller than the distance between the third slide groove 330 and the support plate 102, the thickness of the second support member 300 in the support surface 360 ​​region increases, making the center of gravity of this region closer to the third fulcrum member 104. This structural design increases the contact pressure between the support surface 360 ​​and the third fulcrum member 104, thereby generating greater static and dynamic friction, effectively suppressing unintended movement (crosstalk) of the second support member 300 during movement caused by inertia or external disturbances.

[0125] This design utilizes the height difference between the support surface 360° and the support plate 102 to create local mass concentration by leveraging the difference in structural thickness, thereby enhancing contact pressure and improving frictional stability while ensuring freedom of movement.

[0126] Through the above technical solution, this application solves the motion crosstalk problem caused by insufficient friction between the third support component 104 and the base 110 in the structure of a large-load, long-stroke OIS motor. The height difference design between the support surface 360 ​​and the support plate 102 brings the center of gravity of the second support component 300 closer to the contact area, significantly improving frictional resistance and suppressing lateral displacement deviation.

[0127] In one embodiment of the present invention, the second support member 300 includes a corner portion 320 located between the first magnet 212 and the second magnet 214. The corner portion 320 has a support surface 360 ​​formed on its end face relative to the support plate 102, which cooperates with the third fulcrum member 104 so that the support surface 360 ​​can move relative to the third fulcrum member 104.

[0128] The corner 320 refers to the corner area formed by the adjacent arrangement of the first magnet 212 and the second magnet 214 in the second support member 300. This area experiences significant stress concentration during magnet driving and can be implemented using a right-angle or rounded transition structure to centrally arrange the friction damping structure. The support surface 360 ​​refers to the bearing interface in contact with the third fulcrum member 104 and can be implemented using a planar structure. The friction coefficient can be adjusted by surface roughness or material properties to generate controllable frictional resistance during relative motion. The third fulcrum member 104 refers to the support unit that contacts the support surface 360 ​​and can be implemented using a spherical or ball bearing structure. Its position on the base 110 is constrained by fixing or limiting methods to provide single-point frictional damping when the second support member 300 moves.

[0129] Specifically, a support surface 360 ​​is provided in the corner 320 region between the first magnet 212 and the second magnet 214 of the second support member 300. The third fulcrum member 104 is fixed to the base 110 and contacts the support surface 360. When the second support member 300 is driven to move in the X-axis or Y-axis direction, the support surface 360 ​​in the corner 320 region and the third fulcrum member 104 generate contact pressure due to gravity, thereby forming frictional resistance. The first magnet 212 and the second magnet 214 are close to the support surface 360, which can increase the normal pressure of the contact between the support surface 360 ​​and the third fulcrum member 104. This resistance, by being concentrated in the corner 320 region, can suppress axial crosstalk vibration caused by mechanical coupling. Since other moving areas still use a low-friction guiding structure, the overall scheme maintains the low resistance characteristics required for large-stroke movement while suppressing crosstalk.

[0130] Compared to existing technologies, which typically employ a structure of multiple uniformly distributed low-friction support points to reduce motion resistance, this approach cannot effectively suppress axial crosstalk caused by inertial vibration. This solution addresses the axial crosstalk problem by setting a single high-friction support point in a critical area. The contact pressure generated by gravity concentrates and enhances local friction damping, thereby specifically resolving the issue without significantly increasing overall motion resistance.

[0131] Through the above technical solution, this application can effectively reduce axial crosstalk caused by mechanical coupling in long-stroke optical image stabilization motion, ensuring motion accuracy and drive stability. By controllably adjusting the local frictional resistance, a balance is achieved between long-stroke motion and anti-interference capability, avoiding the problem of increased drive force demand due to a general increase in frictional resistance.

[0132] like Figure 5-6 As shown, in one embodiment of the present invention, a flexible circuit board 340 is fixedly provided on the outer side of the second support member 300. The flexible circuit board 340 is electrically connected to the third coil 311. One end of the flexible circuit board 340 is connected to the base 110. At least one multi-directional anti-collision soft rubber component is provided on the outer shell 120. The multi-directional anti-collision soft rubber component is formed with an anti-collision soft rubber base 123, a first anti-collision rubber platform 121, and a second anti-collision rubber platform 122. The first anti-collision rubber platform 121 and the second anti-collision rubber platform 122 are both provided on the same side direction of the anti-collision soft rubber base 123.

[0133] The ends of the first anti-collision rubber platform 121 and the second anti-collision rubber platform 122 are both extended along the optical axis with the surface of the anti-collision soft rubber base 123 near the lens module as the same reference, and the end of the first anti-collision rubber platform 121 is higher than the end of the second anti-collision rubber platform 122.

[0134] One end of the first anti-collision rubber platform 121 is formed on the surface of the anti-collision soft rubber base 123 near the lens module, and the other end of the first anti-collision rubber platform 121 passes through the housing 120 and is disposed relative to the second support member 300, so that the second support member 300 can achieve anti-collision function in the X, Y and Z axis directions.

[0135] One end of the second anti-collision rubber platform 122 is formed on the surface of the anti-collision soft rubber base 123 near the lens module, and the other end of the second anti-collision rubber platform 122 passes through the housing 120 and is disposed relative to the lens mount 400, so that the lens mount 400 achieves anti-collision function in the Z-axis direction.

[0136] The second support member 300 is provided with a receiving groove 370 that cooperates with the first anti-collision rubber platform 121.

[0137] The flexible circuit board 340 refers to a bendable circuit board, specifically made of polyimide substrate combined with copper foil circuitry, used to maintain the electrical connection stability of the third coil 311 during the movement of the second support member 300. The first anti-collision platform 121 refers to an elastic buffer material, specifically made of silicone or polyurethane, used to absorb the impact energy when the second support member 300 collides with the outer shell 120. The second anti-collision platform 122 refers to a buffer structure disposed on the inner wall of the shell 100, specifically made of the same or different material as the first anti-collision platform 121, used to limit the extreme positions of the lens mount 400 along the optical axis. The receiving groove 370 refers to a groove structure formed on the surface of the second support member 300, specifically formed by stamping or injection molding, used to accommodate the first anti-collision platform 121 and constrain its deformation direction.

[0138] Specifically, one end of the flexible circuit board 340 is fixed to the base 110, and the other end moves with the second support member 300, forming a single-end fixed connection. The first anti-collision plate 121 is embedded in the receiving groove 370 between the housing 120 and the second support member 300. When the second support member 300 moves to its travel limit, the first anti-collision plate 121 absorbs the impact force through compression deformation, preventing structural damage caused by rigid contact. The second anti-collision plate 122 is installed in the gap between the housing 120 and the lens mount 400. When the lens mount 400 moves beyond the preset range along the optical axis, it provides a buffering effect through elastic deformation, avoiding mechanical interference during autofocus. The depth and width of the receiving groove 370 are designed to match the dimensions of the first anti-collision plate 121, ensuring that the deformation of the anti-collision plate is controllable during compression, providing sufficient buffer space while avoiding excessive deformation that could cause structural jamming.

[0139] like Figure 7-8 As shown, in one embodiment of the present invention, a flexible circuit board 340 is fixedly provided on the outer side of the second support member 300. The flexible circuit board 340 is electrically connected to the third coil 311 and to the vibration-absorbing spring 380. The vibration-absorbing spring 380 is fixedly connected to the second support member 300. The vibration-absorbing spring 380 is connected to the base 110 through the hanging ring wire 390. When the second support member 300 is in the initial position, the hanging ring wire 390 is in a bent state.

[0140] The vibration-absorbing spring sheet 380 refers to a thin sheet of elastic conductive material. The portion fixedly connected to the second support member 300 can be a plate-like structure, while the portion connecting to the third coil 311 and / or the hanging loop wire 390 can be a bent metal wire forming a spring structure. The vibration-absorbing spring sheet 380 is fixed to the surface of the second support member 300, absorbing mechanical vibration energy and maintaining electrical signal conduction through the deformation of the externally bent metal wire. The hanging loop wire 390 is a flexible metal wire with conductive properties. Its bending state has a preset redundant length to reduce tensile stress during movement and avoid the risk of breakage. The initial position refers to the second support member 300 being in a centered state without external force, that is, in the middle of the maximum movable range in the X-axis and Y-axis directions. At this time, the slack formed by the bending of the hanging loop wire 390 can compensate for the length change caused by subsequent displacement.

[0141] Specifically, the flexible circuit board 340 is directly connected to the third coil 311 to ensure stable transmission of the autofocus drive signal. The vibration-absorbing spring 380 is fixed to the flexible circuit board 340 by welding or conductive adhesive, forming a circuit path. When the second support member 300 moves, the vibration-absorbing spring 380 buffers vibration energy through its own elastic deformation, reducing stress concentration at the connection points of the flexible circuit board 340. One end of the hanging ring 390 is connected to the vibration-absorbing spring 380, and the other end is fixed to the base 110. Its initial bent state allows the hanging ring 390 to adapt to positional changes without fully extending when the second support member 300 shifts, avoiding connection failure due to rigid tension. When the second support member 300 moves along the X-axis or Y-axis, the synergistic effect of the vibration-absorbing spring 380 and the hanging ring 390 absorbs high-frequency vibrations while maintaining the continuity of the electrical connection. The bending state of the hanging ring 390 also indicates that the length of the hanging ring 390 is too long, thus manifesting as a bent state. It can also be understood that the length of the hanging ring 390 is greater than the distance between the connection point of the hanging ring 390 and the vibration-absorbing spring 380 and the support plate 102. Assuming that when the second support member 300 moves to the maximum distance along the positive X-axis, the limiting of the second support member 300 can be achieved by the first anti-collision rubber platform 121 abutting against the side wall of the receiving groove 370, or by the hanging ring 390 being straightened. The limiting of the second support member 300 when it makes the maximum stroke displacement along the Y-axis or the negative X-axis is similar. Preferably, the limiting of the second support member 300 when it makes the maximum stroke is achieved by the first anti-collision rubber platform 121 abutting against the side wall of the receiving groove 370, thereby ensuring that the vibration-absorbing spring 380 and the hanging ring 390 only perform a conductive function, ensuring the stability of signal transmission.

[0142] Through the above technical solutions, this application effectively reduces the impact of vibration on the flexible circuit board 340 during the movement of the second support member 300, reduces electromagnetic interference during signal transmission, and improves the reliability of circuit connections. The coordinated design of the vibration-absorbing spring 380 and the hanging ring wire 390 maintains conductivity while isolating the direct force of mechanical displacement on electronic components, ensuring the stability of the electrical system under large-stroke movement.

[0143] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A large-load large-stroke OIS motor structure, characterized in that, The application relates to a camera lens stabilizer. The camera lens stabilizer comprises a shell (100) with a hollow cavity and a lens module; a stabilizer support arranged in the hollow cavity and configured to move along a shaking direction; a lens seat (400) arranged in the stabilizer support and configured to move along a focusing direction; the shaking direction comprises a first direction and a second direction which are perpendicular to each other; the focusing direction is perpendicular to the first direction and the second direction; the bottom of the stabilizer support is supported on a base (110) through a plurality of first supporting members (220); the stabilizer support comprises a first supporting member (200) and a second supporting member (300); the second supporting member (300) is supported on the first supporting member (200) through a plurality of second supporting members (240); the first supporting member (200) is supported on the base (110) through the first supporting members (220); the second supporting member (300) is arranged above the first supporting member (200), and the second supporting member (300) and the first supporting member (200) are oppositely arranged along the focusing direction; a third supporting member (104) is arranged between the second supporting member (300) and the base (110); the third supporting member (104) is fixed relative to one of the second supporting member (300) and the base (110) and allows the other one of the second supporting member (300) and the base (110) to move relative to the third supporting member (104); the center of gravity of the second supporting member (300) is arranged close to the third supporting member (104) to increase the friction between the third supporting member (104) and the second supporting member (300). The shell (100) comprises an outer shell (120) and a base (110); the bottom of the outer shell (120) is fixedly connected with the base (110) to form a hollow cavity; the middle part of the outer shell (120) and the base (110) is provided with a light passing hole (101); the bottom of the first supporting member (200) is provided with a plurality of first sliding grooves (230) which are arranged towards the base (110) and have a direction parallel to the second direction; the top of the base (110) is concavely provided with a corresponding base limiting groove (105) at a position opposite to each first sliding groove (230), and the first sliding groove (230) and the base limiting groove (105) cooperatively form a first guiding space for clamping and rollably accommodating the first supporting member (220); the top of the first supporting member (200) is provided with a plurality of second sliding grooves (250) which are arranged towards the second supporting member (300) and have a direction parallel to the first direction. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. The OIS motor structure of claim 1, wherein: ​ ​ ​ ​ ​ ​ The bottom of the second support member (300) is provided with a corresponding third slide groove (330) at a position relative to each of the second slide grooves (250), and the guide of the third slide groove (330) is parallel to the first direction; The second slide (250) cooperates with the third slide (330) to form a second guide space for clamping and rotatably accommodating the second fulcrum member (240).

3. The large-load large-stroke OIS motor structure according to claim 1, wherein: A disturbance compensation drive unit (210) for driving the movement of the second support member (300) is provided between the second support member (300) and the housing (100). The disturbance compensation drive unit (210) includes a first magnet (212) and a second magnet (214) disposed on adjacent sides of the second support member (300), and a flexible circuit board (340) disposed on the top upper surface of the base (110) in cooperation with the first magnet (212) and the second magnet (214). The flexible circuit board (340) is electrically connected to a first coil (211) that cooperates with the first magnet (212) and a second coil (213) that cooperates with the second magnet (214). The first magnet (212) is positioned above the first coil (211), and the first magnet (212) and the first coil (211) are positioned opposite each other along the focusing direction. The plane of the first coil (211) is parallel to the shaking direction. The second magnet (214) is positioned above the second coil (213), and the second magnet (214) and the second coil (213) are positioned opposite each other along the focusing direction, and the plane of the second coil (213) is parallel to the shaking direction; An automatic focusing drive unit (310) for driving the lens mount (400) to move is provided between the lens mount (400) and the second support member (300). The autofocus drive unit (310) includes a third magnet (312) and a third coil (311). The third magnet (312) is fixed on the outer surface of the lens mount (400), and the third coil (311) is fixed on the inner surface of the second support member (300). The third magnet (312) and the third coil (311) are arranged opposite to each other along the first direction or the second direction, and the plane of the third coil (311) is parallel to the focusing direction. The first magnet (212), the second magnet (214), and the third magnet (312) all use a Heilbeck magnetic array.

4. The large-load large-stroke OIS motor structure according to claim 3, characterized in that: The lens mount (400) moves in the hollow cavity along the focusing direction via the autofocus guide (410); The second support member (300) is provided with a first limiting groove (350) that cooperates with the automatic focusing guide (410). The lens mount (400) has a second limiting groove (420) on its outer side, which is provided relative to the first limiting groove (350). The first limiting groove (350) and the second limiting groove (420) are arranged opposite to each other along the first direction or the second direction; The first limiting groove (350) and the second limiting groove (420) cooperate to form a third guiding space for clamping and rotatably accommodating the automatic focusing guide (410); The autofocus guide (410) and the third magnet (312) are disposed on the same side of the lens mount (400).

5. The large-load large-stroke OIS motor structure according to claim 4, characterized in that: A magnetic sheet that cooperates with the third magnet (312) is fixed on the lens holder (400); The outer side of the second support member (300) is fixed with a magnetic absorber (341) that is spaced apart from the third magnet (312). The third magnet (312) and the magnetic absorber (341) are arranged opposite each other along the first direction or the second direction; The third magnet (312) works in conjunction with the magnetic absorber (341) to use magnetic force to make the lens mount (400) abut against the autofocus guide (410).

6. The large-load large-stroke OIS motor structure according to claim 1, wherein: The third fulcrum component (104) is a spherical component or a hemispherical component; The second support member (300) is provided with a support surface (360) that abuts against the third fulcrum member (104) so ​​that the support surface (360) can move relative to the third fulcrum member (104); The base (110) has a support plate (102) formed at a position relative to the third fulcrum member (104). The support plate (102) is provided with a limiting hole (103) that cooperates with the third fulcrum member (104). When the third fulcrum component (104) is engaged with the limiting hole (103), the position of the third fulcrum component (104) relative to the base (110) remains unchanged.

7. The large-load large-stroke OIS motor structure according to claim 2, characterized in that: The second support member (300) is provided with a support surface (360) that cooperates with the third fulcrum member (104) so ​​that the support surface (360) can move relative to the third fulcrum member (104); The base (110) has a support plate (102) formed at a position relative to the third fulcrum member (104). The distance between the support surface (360) and the support plate (102) is less than the distance between the third groove (330) and the support plate (102).

8. The large-load large-stroke OIS motor structure according to claim 3, characterized in that: The second support member (300) includes a corner portion (320) located at the angle between the first magnet (212) and the second magnet (214). The base (110) has a support plate (102) formed at a position relative to the third fulcrum member (104). The corner portion (320) has a support surface (360) formed on its end face relative to the support plate (102) to cooperate with the third fulcrum member (104) so ​​that the support surface (360) can move relative to the third fulcrum member (104).

9. The OIS motor structure with large load and long stroke according to claim 3, characterized in that: The second support member (300) is provided with a flexible circuit board (340); The flexible circuit board (340) is electrically connected to the third coil (311); One end of the flexible circuit board (340) is connected to the base (110); The housing (100) is provided with at least one multi-directional anti-collision soft rubber component; The multi-directional anti-collision soft rubber part is formed with an anti-collision soft rubber base (123), a first anti-collision rubber base (121) and a second anti-collision rubber base (122). The first anti-collision rubber platform (121) and the second anti-collision rubber platform (122) are both located on the same side of the anti-collision soft rubber base (123); The ends of the first anti-collision rubber platform (121) and the second anti-collision rubber platform (122) are both extended along the optical axis with the surface of the anti-collision soft rubber base (123) near the lens module as the same reference, and the end of the first anti-collision rubber platform (121) is higher than the end of the second anti-collision rubber platform (122). One end of the first anti-collision rubber platform (121) is formed on the surface of the anti-collision soft rubber base (123) near the lens module, and the other end of the first anti-collision rubber platform (121) passes through the housing (100) and is disposed relative to the second support member (300) so that the second support member (300) can achieve anti-collision function in the X, Y and Z axes. One end of the second anti-collision rubber platform (122) is formed on the surface of the anti-collision soft rubber base (123) near the lens module, and the other end of the second anti-collision rubber platform (122) passes through the housing (100) and is disposed relative to the lens mount (400) so that the lens mount (400) achieves anti-collision function in the Z-axis direction; The second support member (300) is provided with a receiving groove (370) that cooperates with the first anti-collision rubber platform (121).

10. The large-load large-stroke OIS motor structure according to claim 3, characterized in that: A flexible circuit board (340) is fixed on the outer surface of the second support member (300). The flexible circuit board (340) is electrically connected to the third coil (311); Several vibration-absorbing springs (380) are fixedly connected to the second support member (300); The vibration-absorbing spring sheet (380) is connected to the base (110) via a hanging ring line (390); When the second support member (300) is in its initial position, the lifting ring line (390) is in a bent state; The flexible circuit board (340) is electrically connected to the vibration-absorbing spring (380).

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