Suspension wire structure and anti-shake motor

Abstract

The present invention relates to a suspension wire structure and an anti-shake motor, comprising at least two suspension wires connected in the same direction; adjacent suspension wires are connected by an elastic member; the elastic member can undergo elastic deformation; the elastic member comprises a wrapping portion for wrapping and fixing the suspension wire; the elastic modulus of the elastic member is smaller than the elastic modulus of the suspension wire; the present invention forms a weakened portion through the elastic member, and when falling or stretching occurs, the elastic member will deform first, thereby reducing the impact on the suspension wire and effectively improving the impact resistance of the suspension wire; in the anti-shake motor, a hard connection portion is used to transfer the impact deformation to the suspension wire structure as much as possible, thereby improving the impact resistance.

Description

Technical Field

[0001] The present invention relates to the field of optical imaging, and in particular to a suspension wire structure and an anti-shake motor. Background Art

[0002] With the rapid development of electronic product camera systems, OIS (Optical Image Stabilizer in English and Optical Image Stabilizer in Chinese) has been widely used in electronic devices. OIS refers to the use of optical components, such as lens settings, in cameras or other similar imaging instruments to avoid or reduce instrument jitter in the process of capturing optical signals, thereby improving image quality. It uses movable components to compensate for the optical path of hand shake, thereby reducing the blur of photos. In layman's terms, cameras equipped with optical image stabilization are movable. When inevitable jitter occurs in the camera due to human movement, the OIS optical image stabilization system will drive the moving camera back to its original position through various algorithms and methods to achieve the effect of anti-shake.

[0003] The suspension wire is a common key component in the anti-shake motor. It is used to support the frame to keep a certain gap between it and the base. Under the action of the driving component, the frame can move in a direction perpendicular to the optical axis, thereby realizing the anti-shake of the motor. As a supporting component, the suspension wire needs to ensure a certain strength to support the frame. At the same time, it needs to maintain a certain elasticity and be able to bend under the action of the driving component to achieve displacement anti-shake. This results in the suspension wire being of low strength. When falling or vibrating, the suspension wire may undergo plastic deformation or breakage, affecting its use.

[0004] The patent with patent announcement number CN216670463U discloses a typical optical image stabilization motor, which arranges a suspension wire between a first bracket and a second bracket to make the second bracket more stable when suspended on the first bracket. A second spring sheet connected to the suspension wire is arranged at one end of the suspension wire. When the second bracket moves along the optical axis relative to the first bracket, the above-mentioned deformation part (that is, the elastic string at the edge of the upper spring sheet) moves along the optical axis relative to the fixed part and undergoes elastic deformation, so as to reduce the bending stress on the suspension wire and reduce the degree of bending of the suspension wire. To a certain extent, it can ensure the stability of the second bracket suspended on the first bracket, thereby effectively improving the anti-shake performance of the camera module. The technical solution adopted by the above patent is also a common method in the field to solve the problem that the suspension wire is prone to plastic deformation or fracture when falling; although the upper spring piece edge adopts a deformation part to connect with the suspension wire, which can reduce the impact on the suspension wire when falling and increase the service life and impact resistance of the suspension wire, the structure of the deformation part reduces its own strength. When falling occurs, the impact force is transmitted to the spring piece, which may cause the deformation of the deformation part. In addition, the welding point between the suspension wire and the deformation part is prone to thermal stress concentration and embrittlement, and the strength is weakened. During environmental testing (falling, micro-falling, life testing...), the spring piece (deformation part) is easy to deform and break, thereby causing the optical axis to deflect and shift;

[0005] In addition, the existing technology also reduces the risk of damage to the suspension wire by adding damping glue to the frame and the base bracket. Damping glue is currently a variable that is not easy to control, and the amount of glue dispensed by the glue dispenser is not easy to control. At present, because the gel needs to be dispensed in a step before the cover shell is covered, the position where the damping glue can be dispensed is not easy to dispense, and it is easy to deviate, thereby affecting its shock absorption effect, causing the damping glue to break and fail when it falls and stretches, and then causing the motor control failure.

[0006] Patent publication number CN218829559U discloses a supporting spring, an optical motor, a camera module and an electronic device, which replaces the suspension wire structure with a bent spring structure to increase the anti-drop capability, but the manufacturing cost of this bent structure is relatively high; Summary of the invention

[0007] In order to solve the above problems in the prior art, the present invention provides a suspension wire structure and an anti-shake motor.

[0008] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0009] A suspension wire structure, characterized in that: it comprises at least two suspension wires connected in the same direction; the angle B formed between two adjacent suspension wires is an obtuse angle, wherein 160°≤B≤180°; adjacent suspension wires are connected by elastic members; the elastic members can undergo elastic deformation; the elastic members include a wrapping portion for wrapping and fixing the suspension wires; the elastic modulus of the elastic member is smaller than the elastic modulus of the suspension wires.

[0010] Furthermore, the elastic member includes a spacing portion arranged between adjacent suspension wires.

[0011] Furthermore, the elastic member is made of conductive flexible material.

[0012] Furthermore, the elastic member is connected to the suspension wire through an embedded injection molding process.

[0013] Furthermore, the thickness L of the spacer portion is 1-3 times the diameter of the suspension wire; and the depth H of the wrapping portion is 3-6 times the diameter of the suspension wire.

[0014] An anti-shake motor, characterized in that:

[0015] A housing having a hollow cavity formed therein and an OIS driving coil disposed therein;

[0016] A lens carrier is arranged in the hollow cavity and can move along the optical axis; an AF driving coil is arranged outside the lens carrier;

[0017] A frame is arranged in the hollow cavity and can move perpendicularly to the optical axis; the lens carrier is sleeved in the frame; and a plurality of driving magnets are arranged on the frame relative to the AF driving coil;

[0018] An upper spring sheet is arranged between the top of the lens carrier and the inner top wall of the shell; the upper spring sheet is respectively connected to the lens carrier and the frame;

[0019] A suspension wire structure, respectively connecting the shell and the upper spring sheet and suspending and supporting the frame; the suspension wire structure is one of the above-mentioned suspension wire structures;

[0020] The upper spring sheet comprises a fixing portion fixedly connected to the frame and a hard supporting portion extending from the fixing portion and fixedly connected to the suspension wire.

[0021] Furthermore, the shell includes an outer cover and a base; the bottom of the outer cover is open and fixedly connected to the base to form a hollow cavity inside; and the OIS driving coil is arranged on the upper end surface of the base.

[0022] Furthermore, the bottom of the frame is connected to a driving magnet via a magnet mounting groove; four driving magnets are arranged; and the OIS driving coil is arranged relative to the bottom of the driving magnet.

[0023] Furthermore, the upper spring piece includes a spring string arranged relative to the lens carrier; a vibration absorbing portion is wrapped around a portion of the spring string.

[0024] Furthermore, a lower spring sheet is provided at the bottom of the frame; the lower spring sheet is respectively connected to the frame and the lens carrier.

[0025] The beneficial effects of the present invention are:

[0026] 1. The elastic member is made of a material with an elastic modulus smaller than that of the suspension wire. The smaller the elastic modulus of the elastic member, the easier it is to deform elastically, so that a weakened portion is formed at the location of the elastic member. When falling or stretching occurs, the elastic member will deform first, thereby reducing the impact on the suspension wire, effectively improving the shock resistance of the suspension wire, and completely retaining the flexibility of the suspension wire itself. When applied to a voice coil motor, it can use its own deformation to meet the displacement requirements of OIS anti-shake;

[0027] 2. The present invention adopts a hard support part as a connection structure with the suspension wire structure. The hard support part is not used to absorb the distance of the first gap when falling. Instead, the hard support part is used to quickly and as completely as possible transfer the impact deformation to the suspension wire structure, and the suspension wire structure is used to absorb it by itself. Since the suspension wire structure of the present invention adopts a segmented structure and adds elastic parts, when absorbing impact deformation, the elastic parts will deform before the suspension wire, so that when impacted, the deformation can be quickly absorbed in the form of bending, thereby avoiding plastic deformation or fracture of the suspension wire, and improving the impact resistance of the anti-shake motor.

[0028] 3. When an impact occurs, the lens carrier will also move. Since the upper spring piece serves as a reset component of the lens carrier, a spring string is provided on the inner side of the upper spring piece. The spring structure formed by the spring string is used to reset the lens carrier. The vibration absorbing part provided on part of the spring string can effectively absorb the energy during vibration and reduce the impact of vibration on the lens carrier. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a schematic diagram of the suspension wire structure of the present invention;

[0031] Figure 2 is a cross-sectional view of the suspension wire structure of the present invention;

[0032] Figure 3Schematic diagram of the initial deformation of the suspended wire structure of the present invention under impact;

[0033] Figure 4 is a schematic diagram of the anti-shake motor of the present invention;

[0034] Figure 5 The present invention Figure 4 Middle AA section view;

[0035] Figure 6 is an exploded diagram of the anti-shake motor of the present invention;

[0036] Figure 7 The present invention Figure 6 Enlarged view of part A in the middle;

[0037] Figure 8 It is a schematic diagram of the internal structure of the anti-shake motor of the present invention;

[0038] Description of reference numerals:

[0039] 10. Suspension wire; 11. Elastic member; 12. Connecting part; 13. Wrapping part; 14. Spacer part; 15. Stretching part; 100. Shell; 101. First gap; 102. Second gap; 110. Outer cover; 111. Inner top wall; 120. Base; 130. OIS drive coil; 140. Spacer area; 200. Lens carrier; 210. AF drive coil; 300. Frame; 310. Drive magnet; 400. Lower spring sheet; 500. Upper spring sheet; 510. Fixing part; 520. Hard support part; 530. Spring sheet string; 531. Vibration absorbing part. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work 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 drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Examples, such as Figure 1-2 As shown, the present invention provides a suspension wire structure, comprising two suspension wires 10 connected in the same direction; adjacent suspension wires 10 are connected by an elastic member 11; the elastic member 11 can be elastically deformed; the elastic member 11 comprises a wrapping portion 13 for wrapping and fixing the suspension wire 10; the elastic modulus of the elastic member 11 is smaller than the elastic modulus of the suspension wire 10; the suspension wire 10 is usually made of 40-80um copper wire;

[0044] The same-direction connection usually means that the two suspension wires 10 are approximately straight after being connected end to end, the main body of the suspension wire 10 is straight, and the angle B formed between the two suspension wires 10 is an obtuse angle, and the angle range is 160°-180°; in one embodiment, the angle is 180°, but the bending direction of the suspension wire structure when impacted is not certain, and it may bend in any direction; in one embodiment, it can also be understood that the axes of the two suspension wires 10 are parallel; in one embodiment, the two suspension wires 10 are coaxially arranged; when the angle range is too small, the overall supporting performance of the suspension wire structure decreases, which is not conducive to stability The frame 300 is supported by the fixed angle B; in one embodiment, the angle B is 175°, which enables the suspension wire structure to be fixedly bent in the same direction when impacted, so that it has a better bending response speed and a stable bending direction. When the bending direction is fixed, the internal structure can be better designed to provide the space required for bending, improve the utilization of space, and facilitate the miniaturization of the product; in another embodiment, the two suspension wires 10 bodies can also have a small curvature, and after they are connected in the same direction, the consistency of the bending direction and the rapid response can be better guaranteed;

[0045] The elastic member 11 is a connecting member connecting two suspension wires 10. Since the size of the suspension wire 10 is small, it is preferably connected to the suspension wire 10 by an embedded injection molding process, so as to form a wrapping portion 13 that can wrap the suspension wire 10. In order to ensure a stable connection structure between the wrapping portion 13 and the suspension wire 10, the depth H of the wrapping portion 13 is 3-6 times the diameter of the suspension wire 10, which can ensure that the elastic member 11 functions normally under the condition of optimal cost. In one embodiment, the wrapping portion 13 completely wraps the suspension wire 10, which can further increase the strength of the suspension wire 10 and have a better damping effect, but it will increase the cost.

[0046] The elastic member 11 is made of a material with an elastic modulus smaller than that of the suspension wire 10. The smaller the elastic modulus of the elastic member 11, the easier it is to undergo elastic deformation, so that a weakened portion is formed at the location of the elastic member 11. When falling or stretching occurs, the elastic member 11 will be deformed first, thereby reducing the impact on the suspension wire 10, effectively improving the impact resistance of the suspension wire 10, and completely retaining the flexibility of the suspension wire 10 itself. When used in a voice coil motor, it can utilize its own deformation to meet the displacement requirements of OIS anti-shake. In one embodiment, the yield limit of the elastic member 11 is greater than the yield limit of the suspension wire 10. Since the elastic member 11 is more likely to deform and can absorb more deformation and impact force, the use of a stronger yield limit for the elastic member 11 can prevent it from undergoing plastic deformation when impacted. Figure 3 As shown, the left side shows the initial state of the suspension wire structure, and the right side shows the deformation state of the suspension wire structure at the initial stage of impact. Since the elastic member 11 is made of a material with an elastic modulus smaller than that of the suspension wire 10, the smaller the elastic modulus of the elastic member 11, the easier it is to elastically deform, and the connecting portion 12 drops a distance C. At the initial stage of impact, the elastic member 11 is deformed first, so that the two suspension wires are arranged at an angle, and the tensile deformation of the arc-shaped stretching portion 15 formed by the stretching on the right side of the elastic member 11 effectively absorbs the distance C of the connection portion 12 dropping. As the impact further intensifies, the suspension wire 10 will also bend to participate in the absorption of the distance of the connection portion 12 dropping when the impact occurs; and at the initial stage of impact, the deformation of the elastic member 11 can effectively reduce the direct damage of the impact force to the suspension wire 10, thereby improving the impact resistance and service life of the suspension wire 10.

[0047] In one embodiment, the elastic member 11 includes a spacer 14 provided between adjacent suspension wires 10; the spacer 14 can be used to protect the ends of the suspension wires 10, avoid contact between the two suspension wires 10 during impact, and achieve a buffering effect. At the same time, the spacer 14 can form a reasonable spacing between the two suspension wires 10, so that the elastic member 11 is more likely to deform preferentially, reducing the influence of stress on the suspension wires 10; when the spacer 14 is not provided, since the provision of the elastic member 11 is usually carried out by an embedded injection process, the wrapping portion 13 can completely wrap the suspension wires 10, which has the effect of strengthening protection for the fractures of the two suspension wires 10. When the suspension wire 10 is compressed by impact, the suspension wire 10 will bend and deform, and at this time, the elastic member 11 can be provided with elastic The deformation area of ​​the component 11 is mainly concentrated at the joint of the two suspension wires 10, and the elastic component 11 cannot well reflect the impact absorption capacity; when the suspension wire 10 is stretched by impact, the elastic component 11 as a whole can participate in the stretching deformation, and the elastic component 11 can well reflect the impact absorption capacity; by adding the spacer 14, when the suspension wire 10 is compressed by impact, the area available for deformation on the elastic component 11 can be increased, the impact absorption capacity can be improved, and the elastic deformation of the elastic component 11 can be more easily occurred; the thickness L of the spacer 14 is 1-3 times the diameter of the suspension wire 10; when the thickness of the spacer 14 is further increased, the supporting capacity of the suspension wire 10 will be reduced, so that the suspension wire 10 may not be able to effectively support the frame 300;

[0048] In one embodiment, the suspension wire 10 can be connected in multiple directions, for example, three suspension wires 10 are used. Although the impact resistance of the suspension wire 10 structure can be further enhanced, the linear support capacity of the suspension wire 10 structure will be correspondingly weakened as the number of suspension wires 10 increases. The suspension wire 10 structure is more prone to bending deformation, which is not conducive to the precise adjustment of OIS anti-shake in the voice coil motor. Preferably, two suspension wires 10 are used, the lengths of the two suspension wires 10 are equal, and the diameters of the suspension wires 10 are preferably the same diameter and the same material, and the elastic member 11 connects the two suspension wires 10 in the middle;

[0049] In one embodiment, the elastic member 11 is a conductive flexible material, preferably a conductive liquid silicone or a conductive silicone. The use of a conductive material enables the suspension wire 10 and the elastic member 11 to form a conductive portion, thereby simplifying the internal structure of the voice coil motor.

[0050] like Figure 6 As shown, an anti-shake motor includes a housing 100, a lens carrier 200, a frame 300, an upper spring sheet 500, a suspension wire 10 structure, and a lower spring sheet 400; wherein the lower spring sheet 400 is a non-essential optional structure;

[0051] A hollow cavity is formed in the housing 100; the housing 100 includes a base 120 and an outer cover 110; the outer cover 110 has an opening at the bottom and a light-through hole at the top, and the bottom opening is connected to the base 120 by means of clamping, welding or bonding; a hollow cavity is formed between the base 120 and the outer cover 110;

[0052] The hollow cavity is provided with a frame 300, a lens carrier 200 is provided in the frame 300, and an AF driving coil 210 is provided outside the lens carrier 200; the outer cover 110, the base 120, and the middle of the lens carrier 200 are provided with an axially connected lens through hole along the optical axis direction (Z axis) to accommodate the lens; the lens is connected to the lens carrier 200;

[0053] The frame 300 is provided with a plurality of driving magnets 310 arranged relative to the AF driving coil 210; in one embodiment, a magnet mounting groove is provided at the bottom of the frame 300, and the driving magnet 310 is arranged in the magnet mounting groove, and four driving magnets 310 are arranged, which are arranged along four sides of the frame 300 respectively; the driving magnet 310 and the AF driving coil 210 constitute an AF driving assembly, which can drive the lens carrier 200 to move along the optical axis direction (Z axis);

[0054] An OIS driving coil 130 is provided on the upper end surface of the base 120; the OIS driving coil 130 is arranged relative to the bottom of the driving magnet 310; the driving magnet 310 and the OIS driving coil 130 constitute an OIS driving assembly, which can drive the frame 300 to move along the vertical optical axis direction, that is, to move along the X-axis and Y-axis directions; the optical axis direction is parallel to the Z-axis direction; the movement of the lens carrier 200 is to move in the Z-axis direction relative to the frame 300 inside the frame 300; under the action of the AF driving coil 210 and the driving magnet 310, the lens carrier 200 will move in the Z-axis direction relative to the frame 300; it should be noted that the lens (not shown in the figure) is installed in the lens carrier 200, so the above movement will drive the lens to move, thereby realizing the three-axis movement operation of the lens;

[0055] The upper spring piece 500 is disposed between the top of the lens carrier 200 and the inner top wall 111 of the housing 100; the upper spring piece 500 is connected to the lens carrier 200 and the frame 300 respectively; Figure 6-7 As shown, the upper spring piece 500 includes a fixing portion 510 fixedly connected to the frame 300 and a hard support portion 520 extending from the fixing portion 510 and fixedly connected to the suspension wire 10; the fixing portion 510 can be set as a through hole and fixedly connected to the columnar structure on the frame 300 by snapping;

[0056] The suspension wire structure is connected to the spring sheet 500 and the base 120 respectively and suspends and supports the frame 300; the hard support part 520 can be understood as a structural reinforcement part, which has a small deformation ability when an impact occurs and has the ability to stably maintain its own state, so it will not have the risk of plastic deformation or fracture when an impact occurs. The hard support part 520 can be set to Figure 6-7 The plate-like structure in the embodiment, the upper spring sheet 500 is usually made of metal. When the hard support part 520 is set as a complete plate-like structure, it has high strength and can maintain its own state stably without deformation under severe impact. In another embodiment, the hard support part 520 can be appropriately dug on the basis of the plate-like structure of the previous embodiment to reduce cost and weight. It should be noted that the digging in this embodiment is not to form a structure such as a spring sheet string in the prior art, but to reduce weight while ensuring sufficient strength. The hard support part 520 cooperates with the suspension wire structure to improve the impact resistance of the anti-shake motor.

[0057] In one embodiment, a lower spring sheet 400 is provided between the lens carrier 200 and the base 120; the lower spring sheet 400 is connected to the frame 300 and the lens carrier 200 respectively; the lower spring sheet 400 can provide auxiliary reset when the lens carrier 200 moves; in one embodiment, the structure of the upper spring sheet 500 is connected to the lens carrier 200 and the frame 300 at the same time; under the elastic action of the upper spring sheet 500, the lens carrier 200 can be reset assisted, so that the structure of the lower spring sheet 400 becomes a non-essential optional structure;

[0058] Typically, the outer periphery of the upper spring piece 500 is fixedly connected to the frame 300, the inner side of the upper spring piece 500 is located above the lens carrier 200, the outer periphery of the lower spring piece 400 is fixedly connected to the bottom of the frame 300, the inner side of the lower spring piece 400 is located below the lens carrier 200, the upper spring piece 500 and the inner side of the lower spring piece 400 limit the lens carrier 200, when the lens carrier 200 moves along the optical axis under the action of the AF driving coil 210 and the driving magnet 310, the inner side of the upper spring piece 500 or the lower spring piece 400 is connected to the lens carrier 200 by abutting, so as to realize the reset of the lens carrier 200; in one embodiment, the upper spring piece 500 includes a spring string 530 arranged relative to the lens carrier 200; a part of the spring string 530 is wrapped with a vibration absorbing portion 531;

[0059] In one embodiment, the suspension wire structure is respectively connected to the base 120 and the hard connection part 12 and suspends and supports the frame 300; the suspension wire structure includes two suspension wires 10 connected in the same direction; adjacent suspension wires 10 are connected by an elastic member 11; the elastic member 11 can be elastically deformed; the elastic member 11 includes a wrapping portion 13 for wrapping and fixing the suspension wire 10; the elastic modulus of the elastic member 11 is less than the elastic modulus of the suspension wire 10; the elastic member 11 includes a spacer 14 arranged between adjacent suspension wires 10; the elastic member 11 is a conductive flexible material, preferably conductive liquid silicone; the elastic member 11 is connected to the suspension wire 10 by an embedded injection process; the suspension wire 10 is fixedly connected to the hard connection part 12 through the connecting portion 12;

[0060] like Figure 4-5 As shown, there is a first gap 101 between the bottom of the frame 300 and the base 120, and a second gap 102 between the outer periphery of the frame 300 and the inner wall of the outer cover 110; the frame 300 is supported by four suspension wire structures at four corners to keep the first gap 101 continuously existing, so as to ensure that the OIS driving coil 130 and the driving magnet 310 can easily complete the movement of the frame 300 along the direction perpendicular to the optical axis when working; and to ensure the continuous existence of the first gap 101, it is necessary to ensure that the suspension wire structure has a strong supporting capacity and good flexibility;

[0061] In the prior art, a single suspension wire is used for support. If the flexibility of the suspension wire is simply increased, the rigidity will be insufficient and insufficient to support the frame 300 well. If the rigidity is simply increased, for example, a thicker suspension wire is used, although it has a better effect in terms of impact resistance, the difficulty of the frame 300 moving along the direction perpendicular to the optical axis will increase, which not only increases power consumption but also reduces the accuracy during movement. Therefore, in the prior art, the suspension wire structure is relatively simple, and the upper spring sheet 500 structure is usually optimized to improve the impact resistance of the voice coil motor and avoid the suspension wire 10 from breaking or plastic deformation.

[0062] When an impact occurs, the frame 300 moves between the first gap 101 and the second gap 102, so the force transmitted to the suspension wire 10 is usually tension or pressure. The present invention can effectively improve the impact resistance by cooperating with the hard support part 520 and the elastic member 11 on the suspension wire 10 structure. The hard support part 520 can ensure the stability of the connection between the suspension wire 10 and the upper spring sheet 500. When an impact occurs, the hard support part 520 can quickly transmit the vibration of the frame 300 to the suspension wire 10 structure, which is mainly absorbed by the suspension wire 10 structure. The hard support part 520 provides a stable support structure, and the hard support part 520 also serves as a structure that collides with the outer cover 110 to improve strength. The setting of the elastic member 11 can significantly enhance the impact resistance.

[0063] Although the suspension wire 10 may be stretched or compressed when the impact occurs, the main reason for the actual damage to the suspension wire 10 is caused by the pressure of the fall, that is, under the impact, the first gap 101 is rapidly reduced, and the suspension wire 10 is quickly squeezed. The suspension wire 10 needs to rely on deformation to offset the first gap 101. When the suspension wire 10 can bend normally, the distance of the first gap 101 can be easily absorbed by the bending of the suspension wire 10. However, when the suspension wire 10 is not bent in time or the stress is along the axial direction of the suspension wire, it will be broken or permanently deformed due to the impact. The purpose of setting the connection between the upper spring sheet 500 and the suspension wire 10 as a string elastic structure in the prior art is to help absorb the distance of the first gap 101, so that when the impact occurs, the actual deformation amount that the suspension wire 10 needs to bear is greatly reduced, thereby avoiding damage to the suspension wire 10. However, the change in the structure of the upper spring sheet 500 may also cause plastic deformation of the connection between the upper spring sheet 500 and the suspension wire 10.

[0064] The present invention uses a hard support part 520 as a connection structure with the suspension wire structure. The hard support part 520 is not used to absorb the distance of the first gap 101 when falling. Instead, the hard support part 520 is used to quickly and as completely as possible transfer the impact deformation to the suspension wire 10 structure, and the suspension wire 10 structure is used to absorb the impact deformation by itself. Since the suspension wire 10 structure of the present invention adopts a segmented structure and an elastic member 11 is added, when absorbing the impact deformation, the elastic member 11 will deform before the suspension wire 10, so that when impacted, the deformation can be quickly absorbed in the form of bending, thereby avoiding plastic deformation or fracture of the suspension wire 10, and improving the impact resistance of the anti-shake motor.

[0065] like Figure 6-7 As shown, when an impact occurs, the lens carrier 200 will also move. Since the upper spring sheet 500 serves as a reset component of the lens carrier 200, a spring sheet string 530 is provided on the inner side of the upper spring sheet 500. The spring structure formed by the spring sheet string 530 is used for resetting the lens carrier 200. The vibration absorbing portion 531 provided on a part of the spring sheet string 530 can effectively absorb the energy during vibration and reduce the influence of vibration on the lens carrier 200. The vibration absorbing portion 531 is also connected to a part of the spring sheet string 530 by an embedded injection method.

[0066] like Figure 8 As shown, a spacing interval 140 is formed between the edge of the frame 300 and the base 120. In the prior art, in order to avoid damage to the suspension wire 10 caused by the frame 300 completely moving the distance of the first gap 101 when falling, damping glue is applied in the spacing interval 140 to reduce the risk of damage to the suspension wire 10. However, the present invention can eliminate the damping glue through the combination of the hard support part 520 and the suspension wire 10 structure, and use the structure itself to achieve the effect of shock absorption and anti-fall.

[0067] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A suspended wire structure, characterized in that: The invention comprises at least two suspension wires (10) connected in the same direction; the angle B formed between two adjacent suspension wires (10) is an obtuse angle, wherein 160°≤B≤180°; the adjacent suspension wires (10) are connected via an elastic member (11); the elastic member (11) is capable of elastic deformation; the elastic member (11) comprises a wrapping portion (13) for wrapping and fixing the suspension wire (10); the elastic modulus of the elastic member (11) is smaller than the elastic modulus of the suspension wire (10); and the elastic member (11) is a conductive flexible material.

2. A suspension wire structure according to claim 1, characterized in that: The elastic member (11) comprises a spacing portion (14) arranged between adjacent suspension wires (10).

3. A suspension wire structure according to claim 1, characterized in that: The elastic member (11) is connected to the suspension wire (10) through an embedded injection molding process.

4. A suspension wire structure according to claim 2, characterized in that: The thickness L of the spacer portion (14) is 1 to 3 times the diameter of the suspension wire (10); and the depth H of the wrapping portion (13) is 3 to 6 times the diameter of the suspension wire (10).

5. An anti-shake motor, characterized in that: include A housing (100) having a hollow cavity formed therein and an OIS driving coil (130) disposed therein; A lens carrier (200) is arranged in the hollow cavity and can move along the optical axis direction; an AF driving coil (210) is arranged outside the lens carrier (200); A frame (300) is arranged in the hollow cavity and can move perpendicularly to the optical axis; the lens carrier (200) is sleeved in the frame (300); and a plurality of driving magnets (310) are arranged on the frame (300) and are arranged relative to the AF driving coil (210); An upper spring sheet (500) is arranged between the top of the lens carrier (200) and the inner top wall (111) of the housing (100); the upper spring sheet (500) is respectively connected to the lens carrier (200) and the frame (300); a suspension wire structure, respectively connecting the housing (100) and the upper spring sheet (500) and suspending and supporting the frame (300); the suspension wire structure is a suspension wire structure according to any one of claims 1 to 4; The upper elastic sheet (500) comprises a fixing portion (510) fixedly connected to the frame (300) and a hard supporting portion (520) extending from the fixing portion (510) and fixedly connected to the suspension wire (10).

6. The anti-shake motor according to claim 5, characterized in that: The housing (100) comprises an outer cover (110) and a base (120); the bottom of the outer cover (110) is open and fixedly connected to the base (120) to form a hollow cavity inside; and the OIS drive coil (130) is arranged on the upper end surface of the base (120).

7. The anti-shake motor according to claim 5, characterized in that: The bottom of the frame (300) is connected to a driving magnet (310) via a magnet mounting groove; four driving magnets (310) are provided; and the OIS driving coil (130) is provided relative to the bottom of the driving magnet (310).

8. The anti-shake motor according to claim 5, characterized in that: The upper spring piece (500) comprises a spring piece string (530) arranged relative to the lens carrier (200); a vibration absorbing portion (531) is wrapped around a portion of the spring piece string (530).

9. The anti-shake motor according to claim 5, characterized in that: A lower spring sheet (400) is provided at the bottom of the frame (300); the lower spring sheet (400) is respectively connected to the frame (300) and the lens carrier (200).

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