Voice coil motors, cameras, and electronic devices

Abstract

The present invention provides a voice coil motor, comprising a first base, a cover covering the first base, a first coil assembly disposed between the first base and the cover, a second coil assembly housed within an inner cavity of the first coil assembly, and a magnetic assembly disposed on the first base and located between the first and second coil assemblies. When the first coil assembly is energized, an electromagnetic force is generated between the first coil assembly and the magnetic assembly to drive the first and second coil assemblies to move axially together. When the second coil assembly is energized, an electromagnetic force is generated between the second coil assembly and the magnetic assembly to drive the second coil assembly to move relative to the first coil assembly. The present invention also provides a camera and electronic device equipped with the voice coil motor.

Description

Technical Field

[0001] The present invention relates to the field of electronic control devices, and in particular to a voice coil motor, a camera provided with the voice coil motor, and an electronic device provided with the camera. Background Art

[0002] Camera stabilization currently available on the market is categorized into lens stabilization and body stabilization. Lens stabilization utilizes the displacement of the lens assembly to alter and correct the optical path during shake, achieving stabilization compensation. Body stabilization utilizes the displacement of the photosensitive chip to achieve stabilization. Existing suspended wire OIS (Orthogonal Inertial System) lenses typically utilize a suspended wire OIS motor for stabilization. However, when in use, the drive magnet of the existing suspended wire OIS motor moves relative to the lens mount. Consequently, this drive magnet may cause magnetic interference with other magnetic components on the camera, impacting their proper operation. Summary of the Invention

[0003] The object of the present invention is to provide a voice coil motor that can avoid magnetic interference and realize autofocus function and OIS anti-shake function, a camera provided with the voice coil motor, and an electronic device provided with the camera.

[0004] In order to solve the above technical problems, the present invention provides a voice coil motor, which includes a first base, a cover covering the first base, a first coil assembly arranged between the first base and the cover, a second coil assembly accommodated in the inner cavity of the first coil assembly, and a magnetic assembly arranged on the first base and located between the first coil assembly and the second coil assembly; when the first coil assembly is energized, an electromagnetic force is generated between the first coil assembly and the magnetic assembly to drive the first coil assembly and the second coil assembly to move axially together; when the second coil assembly is energized, an electromagnetic force is generated between the second coil assembly and the magnetic assembly to drive the second coil assembly to move relative to the first coil assembly.

[0005] The present invention also provides a camera, which includes a voice coil motor, a lens module and a photosensitive chip arranged on the voice coil motor, the lens module is connected to the second coil assembly of the voice coil motor, the voice coil motor drives the first coil assembly to move to drive the lens module to move axially along the second coil assembly; the voice coil motor drives the second coil assembly to move to drive the lens module to move along a plane perpendicular to the axial direction, and the voice coil motor drives the photosensitive chip to move relative to the lens module.

[0006] The present invention also provides an electronic device, which includes a shell, a mainboard arranged in the shell, and a camera. The camera is arranged in the shell and is electrically connected to the mainboard.

[0007] The autofocus of the voice coil motor provided by the present invention realizes the movement of the first coil component and the second coil component attached with the lens relative to the first base through the cooperation of the first coil component and the magnetic component positioned on the first base; the first OIS anti-shake of the voice coil motor realizes the movement of the second coil component attached with the lens relative to the first base in the XOY plane through the cooperation of the second coil component and the magnetic component positioned on the first base. Therefore, the autofocus and the first OIS anti-shake of the voice coil motor can move independently relative to the first base, and the first base remains stationary, that is, the magnetic component positioned on the first base remains stationary relative to the lens base when the voice coil motor is working, thereby avoiding magnetic interference caused by the magnetic component to other magnetic components on the camera and not affecting the normal operation of other magnetic components; secondly, the autofocus and the first OIS anti-shake of the voice coil motor share a common magnetic component, that is, the cooperation of the first coil component and the magnetic component realizes the said autofocus, and the cooperation of the second coil component and the magnetic component realizes the said first OIS anti-shake, which not only improves the anti-shake performance of the voice coil motor and reduces components and reduces manufacturing costs, but also can reduce the axial size of the voice coil motor, thereby reducing the internal space occupied by the voice coil motor in the electronic device, which is beneficial to the layout of other electronic components of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the implementation. Obviously, the drawings described below are some implementations of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0009] Figure 1 is a schematic diagram of the three-dimensional structure of a voice coil motor provided by one embodiment of the present invention;

[0010] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure of the voice coil motor;

[0011] Figure 3 yes Figure 2 A schematic diagram of the three-dimensional structure of the voice coil motor from another perspective;

[0012] Figure 4 yes Figure 2 A further schematic diagram of the three-dimensional structure of the voice coil motor;

[0013] Figure 5 yes Figure 4 A schematic diagram of the three-dimensional structure of the voice coil motor from another perspective;

[0014] Figure 6 yes Figure 2A magnified three-dimensional view of the autofocus mechanism and the first OIS anti-shake mechanism;

[0015] Figure 7 yes Figure 6 A schematic diagram of the three-dimensional structure of the autofocus mechanism and the first OIS anti-shake mechanism from another perspective;

[0016] Figure 8 yes Figure 6 A three-dimensional cross-sectional view of the autofocus mechanism and the first OIS anti-shake mechanism after assembly from one viewing angle;

[0017] Figure 9 yes Figure 6 A three-dimensional cross-sectional view from another perspective of the autofocus mechanism and the first OIS anti-shake mechanism after assembly;

[0018] Figure 10 yes Figure 4 A magnified three-dimensional structure diagram of the second body anti-shake mechanism;

[0019] Figure 11 yes Figure 10 A schematic diagram of the three-dimensional structure of the second body anti-shake mechanism from another perspective;

[0020] Figure 12 yes Figure 10 Schematic diagram of the three-dimensional structure decomposition of the coil module;

[0021] Figure 13 yes Figure 4 A magnified three-dimensional image of the circuit board module;

[0022] Figure 14 yes Figure 1 A three-dimensional cross-sectional view of a voice coil motor from one perspective;

[0023] Figure 15 yes Figure 1 A three-dimensional cross-sectional view of the voice coil motor from another perspective;

[0024] Figure 16 yes Figure 1 A three-dimensional cross-sectional view of the voice coil motor from another perspective;

[0025] Figure 17 is a schematic diagram of the three-dimensional structure of a camera provided by one embodiment of the present invention;

[0026] Figure 18 It is a schematic diagram of the three-dimensional structure of an electronic device provided by one embodiment of the present invention. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0028] See also Figures 1 to 5 , Figure 1 is a schematic diagram of the three-dimensional structure of a voice coil motor 100 provided in one embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of the exploded three-dimensional structure of the voice coil motor 100; Figure 3 yes Figure 2 A schematic diagram of the three-dimensional structure of the voice coil motor 100 from another perspective;

[0029] Figure 4 yes Figure 2 A further schematic diagram of the three-dimensional structure of the voice coil motor 100; Figure 5 yes Figure 4A schematic diagram of the three-dimensional structure of the voice coil motor 100 from another perspective. One embodiment of the present invention provides a voice coil motor 100, which includes a first base 22, a cover 24 covering the first base 22, a first coil assembly 26 disposed between the first base 22 and the cover 24, a second coil assembly 28 accommodated in the inner cavity of the first coil assembly 26, a magnetic assembly 27 disposed on the first base 22 and located between the first coil assembly 26 and the second coil assembly 28, a first elastic member 23, a second elastic member 25, a second base 52 disposed on the side of the first base 22 away from the cover 24, and a coil module 54 positioned on the second base 52; the magnetic assembly 27 is disposed around the second coil assembly The first coil assembly 26 is arranged around the magnetic assembly 27. The first elastic member 23 is connected to the cover body 24, the first coil assembly 26 and the second coil assembly 28. The first elastic member 23 has a preset elastic force that pushes the second coil assembly 28 toward the first coil assembly 26 to prevent the second coil assembly 28 from moving axially away from the first coil assembly 26; the second elastic member 25 is connected to the first base 22 and the first coil assembly 26. The first elastic member 23 and the second elastic member 25 are used for the movement and reset of the first coil assembly 26 and the second coil assembly 28; the coil module 54 corresponds to the magnetic assembly 27. When energized, the first coil assembly 26 generates an electromagnetic force with the magnetic assembly 27, driving both the first coil assembly 26 and the second coil assembly 28 to move axially. When energized, the second coil assembly 28 generates an electromagnetic force with the magnetic assembly 27, driving the second coil assembly 28 relative to the first coil assembly 26, that is, relative to the first base 22. When energized, the coil module 54 generates an electromagnetic force with the magnetic assembly 27, driving the second base 52 and the coil module 54 relative to the first base 22. The first coil assembly 26 and the magnetic assembly 27 form an autofocus mechanism, the first coil assembly 28 and the magnetic assembly 27 form a first OIS mechanism, and the coil module 54 and the magnetic assembly 27 form a second OIS mechanism. The axial direction refers to a direction parallel to the axis of the first coil assembly 26, i.e., the Z-axis as shown in the figure. The coil module 54 is a flat coil.

[0030] When the voice coil motor 100 is in use, power is applied to the first coil assembly 26 to generate a first electromagnetic force between it and the magnetic assembly 27. This first electromagnetic force drives the second coil assembly 28 (with a lens attached) and the first coil assembly 26 to move axially, thereby achieving the autofocus function. Power is applied to the second coil assembly 28 to generate a second electromagnetic force between it and the magnetic assembly 27. This second electromagnetic force drives the second coil assembly 26 (with a lens attached) to move along the XOY plane and / or to rotate axially, thereby offsetting lens shake and achieving the first OIS (Optical Image Stabilization) function. Power is applied to the coil module 54 to generate a third electromagnetic force between it and the magnetic assembly 27, thereby driving the second base 52 and the coil module 54 (with a photosensitive chip attached) to move along the XOY plane and / or to rotate axially, thereby offsetting lens shake and achieving the second OIS (Optical Image Stabilization) function. This significantly improves the anti-shake performance of the voice coil motor 100. Axial rotation refers to the rotation axis of the second coil assembly 28 (with a lens attached) parallel to the axial direction of the first coil assembly 26, and the rotation axis of the second base 52 and coil module 54 parallel to the axial direction of the second coil assembly 26. The photosensitive chip is attached to the coil module 54 , and the coil module 54 is arranged on the second base 52 , that is, the photosensitive chip, the coil module 54 and the second base 52 are separated from the first base 2226 , and the photosensitive chip moves relative to the first base 52 with the coil module 54 .

[0031] The first coil assembly 26 of the voice coil motor 100 provided by the present invention is arranged between the first base 22 and the cover body 24, the second coil assembly 28 can be movably accommodated in the inner cavity of the first coil assembly 26, the magnetic assembly 27 is positioned on the first base 22 and surrounded by the second coil assembly 28, and the first coil assembly 26 is surrounded by the magnetic assembly 27; the second base 52 is arranged on the side of the first base 22 away from the cover body 24, the coil module 54 is arranged on the second base 52, and the coil module 54 corresponds to the magnetic assembly 27; that is, the first coil assembly 26 and the second coil assembly 28 are arranged on one side of the first base 22, and the second base 52 and the coil module 54 are arranged on the other side opposite to the first base 22. The autofocus of the voice coil motor 100 is achieved by the cooperation of the first coil component 26 and the magnetic component 27 positioned on the first base 22 to realize the movement of the first coil component 26 and the second coil component 28 with the lens attached relative to the first base 22; the first OIS anti-shake of the voice coil motor 100 is achieved by the cooperation of the second coil component 28 and the magnetic component 27 positioned on the first base 22 to realize the movement of the second coil component 28 with the lens attached relative to the first base 22 in the XOY plane; the second OIS anti-shake of the voice coil motor 100 is achieved by the cooperation of the coil module 54 and the magnetic component 27 positioned on the first base 22 to realize the movement of the coil module 54 with the photosensitive chip attached relative to the first base 22 in the XOY plane; therefore, the autofocus, first OIS anti-shake and second OIS anti-shake of the voice coil motor 100 can move independently relative to the first base 22, and the first base 22 remains stationary, that is, the magnetic component 27 positioned on the first base 22 is in the working state of the voice coil motor 100. During operation, the magnetic assembly 27 remains stationary relative to the lens mount, thereby preventing the magnetic component 27 from causing magnetic interference to other magnetic components on the camera and not affecting the normal operation of other magnetic components. Secondly, since there is no magnet on the second wire assembly 28, the weight of the second wire assembly 28 with the lens attached is reduced, thereby enhancing the reliability of the voice coil motor 100. In addition, the autofocus, first OIS anti-shake and second OIS anti-shake of the voice coil motor 100 share the magnetic assembly 27, that is, the cooperation between the first coil assembly 26 and the magnetic assembly 27 realizes the autofocus, the cooperation between the second coil assembly 28 and the magnetic assembly 27 realizes the first OIS anti-shake, and the cooperation between the coil module 54 and the magnetic assembly 27 realizes the second OIS anti-shake. This not only improves the anti-shake performance of the voice coil motor 100 and reduces the number of components and manufacturing costs, but also reduces the axial size of the voice coil motor 100, thereby reducing the internal space occupied by the voice coil motor 100 in the electronic device, which is beneficial to the layout of other electronic components of the electronic device.

[0032] The electromagnetic force between the second coil module 28 and the magnetic assembly 27 is used to drive the second coil assembly 28 attached to the lens to move in a plane perpendicular to the axial direction relative to the first coil assembly 26, and / or to drive the second coil assembly 28 to rotate along an axis parallel to the axial direction relative to the first coil assembly 26. Specifically, the electromagnetic force between the second coil module 28 and the magnetic assembly 27 drives the second coil assembly 28 attached to the lens to move along the XOY plane, thereby offsetting lens shake and achieving the first OIS (Operational Image Stabilization) function.

[0033] The electromagnetic force between the coil module 54 and the magnetic assembly 27 drives the second base 52 and the coil module 54 to move relative to the first base 22 in a plane perpendicular to the axial direction, and / or drives the second base 52 and the coil module 54 to rotate relative to the first base 22 along an axis parallel to the axial direction. Specifically, when the coil module 54 is energized, the electromagnetic force between the coil module 54 and the magnetic assembly 27 can drive the first base 22 and the coil module 54 with the attached photosensitive chip to move along the XOY plane and / or rotate along the Z axis, thereby offsetting lens shake and achieving the secondary OIS (Operational Image Stabilization) function.

[0034] Please also refer to Figures 4 to 7 , Figure 6 yes Figure 2 A magnified view of the autofocus mechanism and the first OIS anti-shake mechanism; Figure 7 yes Figure 6A schematic diagram of the three-dimensional structure of the autofocus mechanism and the second OIS anti-shake mechanism from another perspective. The first base 22 is a hollow frame. The first coil assembly 26, the second coil assembly 28 and the cover 24 are arranged on the top of the frame. The second base 52 is arranged on the bottom of the frame. The inner cavity of the cover 24 is connected to the inner cavity of the frame. A first through hole 222 is axially provided in the middle of the first base 22. A plurality of positioning frames 220 are provided around the first through hole 222 at the top of the first base 22. The magnetic assembly 27 includes magnetic members respectively positioned in the plurality of positioning frames 220. The first coil assembly 26 includes a first carrier 261 and a first coil 265 surrounded by the first carrier 261. The first carrier 261 is slidably mounted outside the plurality of positioning frames 220. The second coil assembly 28 is accommodated in the receiving space surrounded by the plurality of positioning frames 220. In this embodiment, the first through-hole 222 is a circular hole, and the plurality of positioning frames 220 are four in number. The four positioning frames 220 are evenly arranged along the circumference of the first through-hole 222, i.e., the angle between each two adjacent positioning frames 220 is 90 degrees. The magnetic assembly 27 includes four magnetic members, each positioned within the four positioning frames 220. The first base 22 includes a first support plate 221, the first through-hole 222 being defined in the center of the first support plate 221, and the plurality of positioning frames 220 protruding from the top surface of the first support plate 221. Each positioning frame 220 is provided with a positioning cavity 2201 for positioning a corresponding magnetic member. The positioning cavity 2201 of each positioning frame 220 passes through the side of the positioning frame 220 facing the first through-hole 222, and / or passes through the first support plate 221. In this embodiment, the positioning cavity 2201 of each positioning frame 220 passes through the side of the positioning frame 220 facing the first through-hole 222 to form a first through-slot 2203, and the positioning cavity 2201 of each positioning frame 220 passes through the first support plate 221 to form a second through-slot 2205. A plurality of positioning blocks 223 are provided on the top surface of the first support plate 221 around the through-hole 222. These positioning blocks 223 are used to connect the second elastic member 25 to the first base 22. Preferably, the positioning blocks 223 are arranged in a circle with equal spacing along the circumference of the through-hole 222. A positioning ring 224 is provided on the top surface of the first support plate 221 on the outer periphery of the positioning blocks 223 . A guide groove 225 is formed between the positioning ring 224 and the positioning frames 220 . The guide groove 225 is used to accommodate the first coil assembly 26 . The inner periphery of the positioning ring 224 is used to position the cover 24 .

[0035] In this embodiment, the first support plate 221 is a rectangular plate, and a positioning block 223 is protruded near each corner of the top surface of the first support plate 221. The positioning ring 224 is a rectangular ring arranged around the outer periphery of the four positioning blocks 223. A guide groove 225 is formed between each positioning block 223 and the positioning ring 224; the outer peripheral surface of the cover body 24 contacts the inner peripheral surface of the positioning ring 224, so that the connection between the cover body 24 and the first base 22 is firm.

[0036] In other embodiments, the first support plate 221 may be, but is not limited to, a circular plate, a polygonal plate, or an elliptical plate, the first through hole 222 may be, but is not limited to, a circular hole, a polygonal hole, or an elliptical hole, and the positioning ring 224 may be, but is not limited to, a circular ring, a polygonal ring, or an elliptical ring. The positioning ring 224 surrounds the outer circumference of the plurality of positioning blocks 223, forming a guide groove 225 between each positioning block 223 and the positioning ring 224.

[0037] In other embodiments, the cover 24 may be connected to the first base 22 by means of, but not limited to, snap connection, adhesive connection, or screw connection.

[0038] Preferably, the plurality of positioning blocks 223 are evenly spaced along the circumference of the first through hole 222. In this embodiment, the first support plate 221 is provided with four positioning blocks 223 around the first through hole 222. Each positioning block 223 is a fixing piece extending from the first support plate 221 to a corner corresponding to the first through hole 222.

[0039] A retaining ring 227 extends from the bottom edge of the first support plate 221, away from the positioning ring 224. The retaining ring 227 and the first support plate 221 define a receiving space 228 that connects the first through-hole 222 and the second through-slot 2205. This receiving space 228 accommodates the second base 52 and the coil module 54. A relief opening 2270 is provided on the side of the retaining ring 227 away from the positioning ring 224. In this embodiment, the retaining ring 227 is a rectangular ring. In other embodiments, the retaining ring 227 may be, but is not limited to, a circular ring, a polygonal ring, or an elliptical ring. The bottom surface of the first support plate 221 is provided with a plurality of first positioning portions 229 around the first through-hole 222. The plurality of first positioning portions 229 are arranged in at least one circle around the circumference of the first through-hole 222. Preferably, the plurality of first positioning portions 229 are evenly spaced and arranged in a circle around the circumference of the first through-hole 222. In this embodiment, first positioning portions 229 are respectively provided at the four corners of the first support plate 221. A first universal ball groove 2290 is provided on the side of each first positioning portion 229 facing away from the cover 24. Preferably, an anti-collision plate is provided on the inner surface of the first universal ball groove 2290, and the anti-collision plate is made of a hard, wear-resistant material.

[0040] The cover body 24 includes a cover plate 241 and side plates 242 arranged around the cover plate 241. The cover plate 241 and the side plates 242 enclose a receiving space 243. The receiving space 243 is used to accommodate the first coil assembly 26, the second coil assembly 28, and the magnetic assembly 27. A through-hole 244 is provided in the middle of the cover plate 241 for inserting a lens. The side plates 242 are used to be fixedly connected to the first base 22; specifically, the side plates 242 are snap-fitted to the inner circumference of the positioning ring 224 of the first base 22. In this embodiment, the cover plate 241 is a rectangular plate, and the four edges of the rectangular plate are respectively provided with side plates 242, and the four side plates 242 are connected end to end.

[0041] The inner side of the cover plate 241 is provided with a plurality of connecting portions 247 for connecting to the first elastic member 23. Specifically, the inner side of the cover plate 241 is provided with a plurality of connecting portions 247 around the through-hole 244; preferably, the connecting portions 247 are evenly spaced in a circle around the through-hole 244. In this embodiment, the inner side of the cover plate 241 is provided with four connecting portions 247, namely, a connecting portion 247 is provided at each of the four corners of the inner side of the cover plate 241. The cover plate 241 is also provided with at least one positioning groove 2412 for accommodating the magnetic induction drive element 291. Several metal wires 248 are embedded within the cover 24. These wires 248 are used to electrically connect the first coil assembly 26, the second coil assembly 28, and the magnetic induction drive element 291. One end of each of the metal wires 248 extends beyond the cover 24 to form a plurality of connection terminals, including positive and negative terminals, signal terminals, and operating voltage terminals. The magnetic induction drive element 291 is soldered to the corresponding metal wires 248 within the cover 241. A portion of the metal wires 248 extends to the connection portion 247, where the first elastic member 23 is soldered to the metal wires 248.

[0042] The first carrier 261 is a bobbin, which is secured to the first coil 265 via an integrated winding system. The first carrier 261 includes a second support plate 2610 and a first carrier frame 2611 surrounding the second support plate 2610. The first coil 265 is wound around the first carrier frame 2611. The second support plate 2610 is provided with through-slots 2613 corresponding to the plurality of positioning frames 220 of the first base 22. The plurality of positioning frames 220 are inserted into the through-slots 2613, allowing the first carrier frame 2611 to surround the plurality of positioning frames 220. The second support plate 2610 and the first carrier frame 2611 define a receiving space 2614, which is connected by the through-slots 2613 and is used to accommodate the second coil assembly 28. A second through-hole 2615 is axially defined through the top and bottom surfaces of the first carrier 261. Specifically, the second through-hole 2615 is located in the center of the second support plate 2610. The top surface refers to the surface facing the same direction as the light entrance hole of the lens, and the bottom surface refers to the surface facing away from the light entrance hole of the lens. In this embodiment, the second support plate 2610 is a rectangular plate, the first supporting frame 2611 is a rectangular frame, and the second support plate 2610 is a rectangular plate. Through slots 2613 are respectively provided on the four sides of the second support plate 2610, that is, the second support plate 2610 is provided with four through slots 2613, and each through slot 2613 is adjacent to the corresponding side wall of the first supporting frame 2611. The top surface of the first supporting frame 2611 is provided with a connecting block 2616 for connecting to the first elastic member 23. Specifically, a connecting block 2616 is provided at each corner of the top surface of the first supporting frame 2611. The top surface of the second support plate 2610 is provided with a plurality of second universal ball grooves 2612 around the second through hole 2615. Preferably, the plurality of second universal ball grooves 2612 are evenly spaced along the circumference of the second through hole 2615. In this embodiment, the top surface of the second support plate 2610 is provided with four second universal ball grooves 2612. The top surface of the first carrier 261 is provided with a plurality of first impact bosses 2617. These first impact bosses 2617 protect the lens attached to the second coil assembly 28 from direct impact. In this embodiment, the top surface of the first carrier 261 is provided with four pairs of second impact bosses 2617, arranged in a circle along the circumference of the first carrier 261. The first coil 265 is electrically connected to the metal wire 248 within the cover 24 via the first elastic member 23.

[0043] The first carrier 261 is equipped with an induction magnet 293 corresponding to the magnetic induction drive element 291 on the cover 24. The magnetic induction drive element 291 and the induction magnet 293 cooperate to provide feedback on the actual motion trajectory of the first carrier 261 relative to the cover 24, thereby adjusting the current intensity and / or current direction of the first coil 265, ensuring a more accurate motion trajectory of the first carrier 261 and, consequently, more precise autofocusing of the voice coil motor 100. Specifically, when the first carrier 261 moves axially relative to the cover 24 for AF focusing, the changes in magnetic flux generated between the magnetic induction drive element 291 and the induction magnet 293 are calculated to achieve closed-loop AF control.

[0044] The bottom surface of the first carrier 261 is provided with a first positioning groove 2601 and a plurality of second impact bosses 2618 around the second through-hole 2615. The first positioning groove 2601 is used to position the second elastic member 25. The second impact bosses 2618 protect the lens attached to the second coil assembly 28 from direct impact. In this embodiment, the bottom surface of the first carrier 261 is provided with four pairs of second impact bosses 2618. These four pairs of second impact bosses 2618 are arranged in a circle along the circumference of the first carrier 261, and the four pairs of second impact bosses 2618 correspond axially to the four pairs of first impact bosses 2617.

[0045] The magnetic assembly 27 includes at least one pair of first magnetic members 271 located on opposite sides of the second coil assembly 28 and at least one pair of second magnetic members 273 located on the other opposite sides of the second coil assembly 28. The polarity of the two sides facing each other of the pair of first magnetic members 271 is the same, and the polarity of the two sides facing each other of the pair of second magnetic members 273 is the same. Specifically, the first magnetic members 271 and the second magnetic members 273 are both magnets. The two sides facing each other of the pair of first magnetic members 271 can both be S poles, and the two sides facing each other of the pair of second magnetic members 273 can both be N poles; or the two sides facing each other of the pair of first magnetic members 271 can both be N poles, and the two sides facing each other of the pair of second magnetic members 273 can both be S poles. In this embodiment, the two sides facing each other of the pair of first magnetic members 271 are both S poles, and the two sides facing each other of the pair of second magnetic members 273 are both N poles. A pair of first magnetic parts 271 and a pair of second magnetic parts 273 are respectively accommodated in the positioning cavities 2201 of the four positioning frames 220 of the first base 22, and a pair of first magnetic parts 271 and a pair of second magnetic parts 273 are used to surround the second coil assembly 28, and the first coil 265 is surrounded by the pair of first magnetic parts 271 and the pair of second magnetic parts 273.

[0046] The second coil assembly 28 includes a second carrier 281 and at least one pair of second coils 283 disposed on the second carrier 281. When current flows through the at least one pair of second coils 283, the electromagnetic force generated between the at least one pair of second coils 283 and the magnetic components of the magnetic assembly 27 drives the second coil assembly 288 to move relative to the first base 22 in a first direction perpendicular to the axial direction. Specifically, the second carrier 281 is a wire frame. A mounting hole 2810 is defined in the middle of the second carrier 281, extending axially through the top and bottom surfaces. These mounting holes 2810 are used to connect to the lens. A pair of second coils 283 are disposed on opposite sides of the mounting holes 2810. Each second coil 283 is a side-wound coil, meaning that each second coil 283 is wound on one side of the second carrier 281. The second coils 283 are electrically connected to the metal wire 248 of the cover 24. In this embodiment, the second carrier 281 is a rectangular frame, i.e., the second carrier 281 includes four outer side surfaces, each of which is provided with a protruding positioning block 2811. Each second coil 283 is wound around the positioning block 2811 on the corresponding side of the second carrier 281. When the second coil assembly 28 is accommodated in the receiving space 2614 of the first carrier 261, the second coil assembly 28 is supported on the top surface of the second support plate 2610. A plurality of positioning frames 220 are disposed around the second coil assembly 28, with at least one pair of positioning frames 220 corresponding to at least one pair of second coils 283. In this embodiment, a pair of first magnetic members 271 corresponds to at least one pair of second coils 283. When current flows through the pair of second coils 283, the electromagnetic force generated between the pair of second coils 283 and the pair of first magnetic members 271 drives the second coil assembly 28 to move relative to the first carrier 261 in a first direction perpendicular to the axial direction, i.e., the second coil assembly 28 moves along the Y-axis. When the direction of the current input into the pair of second coils 283 is changed, the electromagnetic force generated between the pair of second coils 283 and the pair of first magnetic members 271 can drive the second coil assembly 28 to change its movement direction.

[0047] In some embodiments, the second coil assembly 28 includes two pairs of second coils 283 corresponding to a pair of first magnetic members 271, i.e., the two pairs of second coils 283 correspond to a pair of first magnetic members 271, respectively. Specifically, two second coils 283 are respectively wound around a pair of outer surfaces of the second carrier 261, thereby forming two pairs of second coils 283. When different currents flow through the two pairs of second coils 283, different electromagnetic forces are generated between the two pairs of second coils 283 and the pair of first magnetic members 271, causing the second coils 283 and the first magnetic members 271 to generate different driving forces, forming torques, thereby driving the second coil assembly 28 to rotate relative to the first base 22 along an axis parallel to the axial direction, i.e., the second coil assembly 28 rotates relative to the first carrier 261 along an axis parallel to the axial direction. When currents of the same magnitude flow through the two pairs of second coils 283, the electromagnetic force generated between the two pairs of second coils 283 and the pair of first magnetic members 271 drives the second coil assembly 28 to move in a direction perpendicular to the axial direction relative to the first carrier 261, that is, along the Y-axis; when the direction of the current input into the two second coils 283 is changed, the electromagnetic force generated between the two pairs of second coils 283 and the pair of first magnetic members 271 can drive the second coil assembly 28 to change its movement direction.

[0048] In some embodiments, the second coil assembly 28 further includes at least one pair of third coils 285 disposed on the second carrier 281. Current is passed through the at least one pair of third coils 285, and electromagnetic force is generated between the at least one pair of third coils 285 and the magnetic member of the magnetic assembly 27 to drive the second coil assembly 28 to move relative to the first base 22 in a second direction, where the second direction is perpendicular to the first direction. Specifically, the second carrier 281 is provided with a pair of third coils 285 on two opposite sides of the mounting hole 2810. Each third coil 285 is a side-wound coil, that is, each third coil 285 is wound around a side of the second carrier 281, and the third coil 285 is electrically connected to the metal wire 248 of the cover 24. Each third coil 285 is wound around a positioning block 2811 on a corresponding side of the second carrier 281. When the second coil assembly 28 is housed in the receiving space 2614 of the first carrier 261, the second coil assembly 28 is supported on the top surface of the second support plate 2610. The pair of second magnetic members 273 corresponds to at least one pair of third coils 285. When current flows through the pair of third coils 285, the electromagnetic force generated between the pair of third coils 285 and the pair of second magnetic members 273 drives the second coil assembly 28 to move relative to the first carrier 261 in a second direction. This second direction is perpendicular to the axial direction and the first direction, meaning that the second coil assembly 28 moves along the X-axis. When the direction of the current input into the pair of third coils 285 is changed, the electromagnetic force generated between the pair of third coils 285 and the pair of second magnetic members 273 drives the second carrier 281 to change its direction of movement.

[0049] In some embodiments, the second coil assembly 28 includes two pairs of third coils 285 corresponding to a pair of second magnetic members 273, that is, the two pairs of third coils 285 correspond to the pair of second magnetic members 273 respectively; when different currents flow through the two pairs of third coils 285, different electromagnetic forces are generated between the two pairs of third coils 285 and the pair of second magnetic members 273 respectively, and the two pairs of third coils 285 and the pair of second magnetic members 273 generate different driving forces to form a torque to drive the second coil assembly 28 to rotate relative to the first base 22 along an axis parallel to the axial direction, that is, the second coil assembly 28 rotates relative to the first carrier 261 along an axis parallel to the axial direction. When currents of the same magnitude flow through the two pairs of third coils 285, the electromagnetic force generated between the two pairs of third coils 285 and the pair of second magnetic members 273 drives the second coil assembly 28 to move relative to the first base 22 in a direction perpendicular to the axial direction, that is, along the X-axis; when the direction of the current input into the two third coils 285 is changed, the electromagnetic force generated between the two pairs of third coils 285 and the pair of second magnetic members 273 can drive the second coil assembly 28 to change its movement direction.

[0050] In this embodiment, a pair of second coils 283 are provided on two opposite sides of the second carrier 281, and a pair of third coils 285 are provided on other opposite sides. When the second coil assembly 28 is accommodated in the accommodating space 2614 of the first carrier 261, the pair of second coils 283 corresponds to the pair of first magnetic members 271, and the pair of third coils 285 corresponds to the pair of second magnetic members 273. When current flows through the pair of second coils 283, the electromagnetic force generated between the pair of second coils 283 and the pair of first magnetic members 271 drives the second coil assembly 28 to move along the first direction relative to the first carrier 261, that is, the second coil assembly 28 moves along the Y-axis. When the direction of the current input into the pair of second coils 283 is changed, the electromagnetic force generated between the pair of second coils 283 and the pair of first magnetic members 271 can drive the second coil assembly 28 to change its direction of movement. When current flows through the pair of third coils 285, the electromagnetic force generated between the pair of third coils 285 and the pair of second magnetic members 273 drives the second coil assembly 28 to move in the second direction relative to the first carrier 261, that is, the second coil assembly 28 moves along the X-axis. When the direction of the current input into the pair of third coils 285 is changed, the electromagnetic force generated between the pair of third coils 285 and the pair of second magnetic members 273 can drive the second coil assembly 28 to change its direction of movement. When current flows simultaneously through the pair of second coils 283 and the pair of third coils 285 with different currents, the torque generated by the driving force generated by the pair of second coils 283 and the pair of first magnetic members 271 is different from the torque generated by the driving force generated by the pair of third coils 285 and the pair of second magnetic members 273, thereby driving the second coil assembly 28 to move in the corresponding direction relative to the first carrier 261.

[0051] The top surface of the second carrier 281 is provided with a second positioning groove 2812 around the mounting hole 2810. The second positioning groove 2812 is used to connect to the first elastic member 23. The top surface of the first carrier 261 is provided with a plurality of third impact bosses 2813. These third impact bosses 2813 protect the lens attached to the second carrier 281 from direct impact. The second coil 283 and the third coil 285 on the second carrier 281 are electrically connected to the metal wire 248 in the cover 24 via the first elastic member 23. The bottom surface of the second carrier 281 is provided with a plurality of third universal ball grooves 2815 around the mounting hole 2810. In this embodiment, the third universal ball grooves 2815 are respectively provided at the four corners of the bottom surface of the second carrier 281.

[0052] The second carrier 281 is provided with a first magnetic induction driving element 295 corresponding to the first magnetic member 271 and a second magnetic induction driving element 296 corresponding to the second magnetic member 273. The first magnetic induction driving element 295 and the second magnetic induction driving element 296 are each electrically connected to the metal wire 248 of the cover 24. In this embodiment, the first magnetic induction driving element 295 is provided on the side of the second carrier 281 corresponding to the first magnetic member 271. When the first magnetic induction driving element 295 attached to the second carrier 281 is actuated, it calculates the change in magnetic flux generated by the first magnetic member 271, thereby simultaneously controlling the movement of the second coil assembly 28 along the Y-axis and the rotation along an axis parallel to the Z-axis. The second magnetic induction driving element 296 is provided on the side of the second carrier 281 corresponding to the second magnetic member 273. When the second magnetic induction driving element 296 attached to the second carrier 281 is actuated, it calculates the change in magnetic flux generated by the second magnetic member 273, thereby simultaneously controlling the movement of the second coil assembly 28 along the X-axis and the rotation along an axis parallel to the Z-axis.

[0053] like Figure 6 and Figure 7As shown, the first elastic member 23 is connected between the cover plate 241, the first carrier 261, and the second carrier 281, and the second elastic member 25 is connected between the first carrier 261 and the first base 22. In this embodiment, the first elastic member 23 is a spring. The first elastic member 23 includes a first connecting ring 231 surrounding the second coil assembly 28 and a plurality of first positioning portions 233 connected to the outer circumference of the first connecting ring 231. Each first positioning portion 233 is connected between the cover body 24 and the first connecting ring 231. Specifically, the first connecting ring 231 is a closed ring formed by a thin strip. The outer circumference of the first connecting ring 231 is provided with a plurality of fixing portions 2312. The plurality of first positioning portions 233 are respectively connected to the plurality of fixing portions 2312. The first connecting ring 231 and the plurality of fixing portions 2312 are used to connect to the second carrier 281. In this embodiment, the inner diameter of the first connecting ring 231 is equal to or slightly larger than the diameter of the mounting hole 2810 of the second carrier 281. There are four fixing portions 2312, which are evenly spaced apart along the circumference of the first connecting ring 231. There are four first positioning portions 233, which are respectively connected to the four fixing portions 2312 and evenly spaced apart along the circumference of the first connecting ring 231. Each fixing portion 2312 is a protruding piece connected to the first connecting ring 231. Each first positioning portion 233 includes a first elastic connecting strip 2331 connected to the fixing portion 2312, a first positioning piece 2332 connected to the end of the first connecting strip 2331 away from the fixing portion 2312, a second elastic connecting strip 2335 connected to the end of the first positioning piece 2332 away from the first connecting strip 2331, and a second positioning piece 2336 connected to the end of the second connecting strip 2335 away from the first positioning piece 2332. The first positioning piece 2332 is used to connect to the connecting block 2616 of the first carrier 261, and the second positioning piece 2336 is used to connect to the connecting portion 247 of the cover 24. The middle portions of the first connecting strip 2331 and the second connecting strip 2335 are curved.

[0054] The second elastic member 25 is a spring-loaded element. It includes a second connecting ring 251 surrounding the first coil assembly 26 and a plurality of second positioning portions 253 connected to the outer circumference of the second connecting ring 251. Each second positioning portion 253 is connected between the first base 22 and the second connecting ring 261. Specifically, the second connecting ring 261 is a closed ring formed by a thin strip. The outer circumference of the second connecting ring 261 is provided with a plurality of fixing portions 2512. The plurality of second positioning portions 253 are respectively connected to the fixing portions 2512. The second connecting ring 251 and the fixing portions 2512 are used to connect to the first carrier 261. In this embodiment, the inner diameter of the second connecting ring 251 is equal to or slightly larger than the diameter of the second through-hole 2615 of the first carrier 261. There are four fixing portions 2512, evenly spaced along the circumference of the second connecting ring 251. There are four second positioning portions 253, each connected to one of the four fixing portions 2512. Each second positioning portion 253 is evenly spaced along the circumference of the second connecting ring 251. Each fixing portion 2512 is a protruding piece connected to the second connecting ring 251. Each second positioning portion 233 includes a resilient third connecting bar 2531 connected to the fixing portion 2512 and a third positioning piece 2532 connected to the end of the third connecting bar 2531 away from the fixing portion 2512. The third positioning piece 2532 is used to connect to the first base 22. The middle portion of the third connecting bar 2531 is curved.

[0055] The first carrier 261 and the second carrier 281 are connected via a plurality of first universal ball transfers 286. These first universal ball transfers 286 are arranged along the circumference of the second coil assembly 28, with a gap between the first carrier 261 and the second carrier 281. Therefore, the second carrier 281 can move relative to the first carrier 261 via the first universal ball transfers 286. Specifically, the first universal ball transfers 286 are respectively accommodated in the second universal ball transfer grooves 2612 of the first carrier 261 and the third universal ball transfer grooves 2815 of the second carrier 281. The depths of the second universal ball transfer grooves 2612 and the third universal ball transfer grooves 2815 are both less than the radius of the first universal ball transfers 286. When the first universal ball transfers 286 are accommodated in the second universal ball transfer grooves 2612 and the corresponding third universal ball transfer grooves 2815, the first universal ball transfers 286 partially extend out of the second universal ball transfer grooves 2612 and the third universal ball transfer grooves 2815. In this embodiment, the number of the first universal ball transfers 286 is four, and the four first universal ball transfers 286 are respectively accommodated in the four second universal ball transfer grooves 2612 of the first carrier 261 and the four third universal ball transfer grooves 2815 of the second carrier 281 .

[0056] Please also refer to Figure 6-Figure 9 , Figure 8 yes Figure 6A three-dimensional cross-sectional view of the autofocus mechanism and the first OIS anti-shake mechanism after assembly from one viewing angle; Figure 9 yes Figure 6A three-dimensional cross-sectional view of the autofocus mechanism and the first OIS anti-shake mechanism after assembly from another perspective. When assembling the autofocus mechanism and the first OIS anti-shake mechanism of the voice coil motor 100, a pair of first magnetic members 271 and a pair of second magnetic members 273 are respectively positioned in the positioning cavities 2201 of the four positioning frames 220 of the first base 22, and the first magnetic members 271 and the second magnetic members 273 are fixed to the first base 22 by dispensing glue; a plurality of first universal ball bearings 286 are respectively placed in a plurality of second universal ball bearing grooves 2612 of the first carrier 261, and the second carrier 281 is accommodated in the receiving space 2614 of the first carrier 261, so that the mounting hole 2810 corresponds to the second through hole 2615, and if The portion of the second universal ball groove 2612 away from the second support plate 2610 is accommodated in the third universal ball groove 2815, creating a gap between the second coil assembly 28, the second support plate 2610, and the first carrier frame 2611. The first connecting ring 231 of the first elastic member 23 is fixedly connected to the second positioning groove 2812 of the second carrier 281 and secured by dispensing glue. The first positioning piece 2332 of the first elastic member 23 is fixedly connected to the connecting block 2616 of the first carrier 261. The second positioning pieces 2336 of the first elastic member 23 are each soldered to the connecting portion 247 of the cover 24. At this point, the first coil assembly 26 and the second coil assembly 28 are connected to the positive and negative terminals on the cover 24 through the first elastic member 23, allowing the first elastic member 23 to be soldered to the first coil 265, the second coil 283, and the third coil 285, conducting positive and negative currents. The second connecting ring 251 of the second elastic member 25 is fixedly connected to the first positioning groove 2601 of the first carrier 261 and fixed by dispensing glue, the first coil assembly 26 is placed on the top of the first base 22, and the several third positioning pieces 2532 of the second elastic member 25 are respectively fixedly connected to the several positioning blocks 223 of the first base 22. The several positioning frames 220 of the first base 22 are respectively inserted into the several through grooves 2613 of the first carrier 261, so that the first coil 265 is surrounded by the several positioning frames 220, and the several positioning frames 220 are surrounded by the second carrier 281. The first carrying frame 2611 is slidably accommodated in the guide groove 225 of the first base 22 along the axial direction, and the pair of first magnetic members 271 corresponds to the pair of second coils 283, and the pair of second magnetic members 273 corresponds to the pair of third coils 285. Since each positioning frame 220 is provided with a first through slot 2203, the first magnetic member 271 directly faces the second coil 283, and the second magnetic member 273 directly faces the third coil 285, that is, there is no partition between the first magnetic member 271 and the second coil 283, and there is no partition between the second magnetic member 273 and the third coil 285, thereby enhancing the electromagnetic force between the two; then the side plate 242 of the cover body 24 is clamped to the positioning ring 224 of the first base 22.At this time, the second coil assembly 28 is axially positioned relative to the first coil assembly 26 by the elastic resistance of the first elastic member 23, that is, the second coil assembly 28 cannot move axially relative to the first coil assembly 26, but the second coil assembly 28 can move on the XOY plane relative to the first coil assembly 26; the first coil assembly 26 and the second coil assembly 28 are axially movably arranged in the space enclosed by the first base 22 and the cover body 24, and the first elastic member 23 and the second elastic member 25 are used to drive the first coil assembly 26 and the second coil assembly 28 to reset.

[0057] Please also refer to Figure 4-Figure 5 and Figure 10-12 , Figure 10 yes Figure 4 A magnified three-dimensional structure diagram of the second body anti-shake mechanism; Figure 11 yes Figure 10 A schematic diagram of the three-dimensional structure of the second body anti-shake mechanism from another perspective; Figure 12 yes Figure 10 Schematic diagram of the three-dimensional structure of the coil module in the figure. The second base 52 is a hollow plastic frame. The volume of the second base 52 is smaller than the volume of the accommodating space 228 of the first base 22. Therefore, the second base 52 can be accommodated in the accommodating space 228 and can move within the accommodating space 228. Specifically, a accommodating hole 520 is provided in the middle of the top surface of the second base 52 and passes through the second base 52. The accommodating hole 520 is used to accommodate a photosensitive chip, a driver chip, etc. In this embodiment, the second base 52 includes a rectangular substrate 521. The accommodating hole 520 is provided on the top surface of the substrate 521 and passes through the substrate 521. The second base 52 is provided with a magnetic conductive part 5211 corresponding to the magnetic component 27, and the magnetic conductive part 5211 is magnetically attracted to the magnetic component 27; in this embodiment, the substrate 521 is provided with a plurality of magnetic conductive parts 5211 around the accommodating hole 520, and each magnetic conductive part 5211 is an iron sheet; that is, the substrate 521 is embedded with a plurality of iron sheets around the accommodating hole 520, and the plurality of iron sheets are magnetically attracted to the first magnetic part 271 and the second magnetic part 273.

[0058] The second base 52 is connected to the first base 22 via a plurality of second universal ball transfers 56 . These second universal ball transfers 56 are arranged circumferentially around the first coil assembly 26 . A gap exists between the second base 52 and the first base 22 . Therefore, the second base 52 can move relative to the first base 22 via the second universal ball transfers 56 . Specifically, a plurality of second positioning portions 5213 are provided around the first coil assembly 26 on the side of the second base 52 facing the first base 22 . The plurality of second positioning portions 5213 are arranged in at least one circle circumferentially around the first coil assembly 26 , and the plurality of second universal ball transfers 56 are respectively rollingly disposed within the plurality of second positioning portions 5213 . Specifically, each second positioning portion 5213 has a fourth universal ball groove 5214 on the side facing the first base 22. The depth of the fourth universal ball groove 5214 is less than the radius of the second universal ball 56. When the second universal ball 56 is accommodated in the fourth universal ball groove 5214, the second universal ball 56 partially extends out of the fourth universal ball groove 5214 and abuts the first base 22. In this embodiment, the second positioning portions 5213 are provided at the four corners of the top surface of the base plate 521. The second positioning portions 5213 are protruding blocks protruding from the base plate 521, and the fourth universal ball grooves 5214 are formed on the top surface of these blocks.

[0059] In this embodiment, the side of the second base 52 facing the first base 22 is provided with a plurality of second positioning portions 5213 corresponding to the plurality of first positioning portions 229, and each second positioning portion 5213 is provided with a fourth universal ball groove 5214 corresponding to the first universal ball groove 2290; each first universal ball groove 2290 and the corresponding fourth universal ball groove 5214 are provided with a second universal ball 56, and the diameter of the second universal ball 56 is greater than the sum of the depths of the first universal ball groove 2290 and the fourth universal ball groove 5214, so that there is a gap between the first base 22 and the second base 52 so that the second base 52 can move relative to the first base 22.

[0060] Preferably, a second anti-collision member 523 is provided at the contact point between the second positioning portion 5213 and the second universal ball 56. In this embodiment, a second anti-collision member 523 is provided within the fourth universal ball groove 5214 of each second positioning portion 5213. Each second anti-collision member 523 is a hard, wear-resistant sheet provided within the fourth universal ball groove 5214. Preferably, a hard, wear-resistant sheet is embedded within the inner side surface of the fourth universal ball groove 5214 of the second positioning portion 5213.

[0061] The top surface of the substrate 521 is provided with positioning posts 5215 around the receiving hole 520. These posts 5215 are used to position the coil module 54 relative to the second base 52. Specifically, positioning posts 5215 are provided at two opposite corners of the top surface of the substrate 521, adjacent to the receiving hole 520. The axial extension length of each positioning post 5215 is no greater than the axial extension length of the second positioning portion 5213. The outer peripheral wall of the second base 52 is provided with a plurality of impact portions 5216. These impact portions 5216 are made of a flexible material and prevent the second base 52 from rigidly colliding with the first base 22. In this embodiment, impact portions 5216 are provided at opposite ends of each side wall of the substrate 521. The bottom surface of the substrate 521 is provided with a relief groove 2517 and a plurality of relief holes 5218 around the receiving hole 520. The first relief groove 2517 is connected to the receiving hole 520, and the plurality of relief holes 5218 are arranged along the circumference of the receiving hole 520.

[0062] The coil module 54 includes at least one pair of fourth coils 5401 corresponding to the pair of first magnetic members 271. Specifically, the pair of fourth coils 5401 corresponds to the pair of first magnetic members 271. When current flows through the pair of fourth coils 5401, the electromagnetic force generated between the pair of fourth coils 5401 and the pair of first magnetic members 271 drives the second base 52 and the coil module 54 to move relative to the first base 22 in a first direction perpendicular to the axial direction. Specifically, the second base 52 and the coil module 54 move along the Y-axis. When the direction of the current input into the pair of fourth coils 5401 is changed, the electromagnetic force generated between the pair of fourth coils 5401 and the pair of first magnetic members 271 drives the second base 52 to change its direction of movement.

[0063] In this embodiment, the coil module 54 includes two pairs of fourth coils 5401 corresponding to a pair of first magnetic parts 271, that is, the two pairs of fourth coils 5401 correspond to a pair of first magnetic parts 271 respectively; when different currents flow through the two pairs of fourth coils 5401, different electromagnetic forces are generated between the two pairs of fourth coils 5401 and the pair of first magnetic parts 271, so that the fourth coils 5401 and the first magnetic parts 271 generate different driving forces to form torque, thereby driving the second base 52 and the coil module 54 to rotate relative to the first base 22 along an axis parallel to the axial direction. When currents of the same magnitude flow through the two pairs of fourth coils 5401, the electromagnetic force generated between the two pairs of fourth coils 5401 and the pair of first magnetic members 271 drives the second base 52 and the coil module 54 to move relative to the first base 22 in a direction perpendicular to the axial direction, that is, along the Y-axis; when the direction of the current input into the two fourth coils 5401 is changed, the electromagnetic force generated between the two pairs of fourth coils 5401 and the pair of first magnetic members 271 can drive the second base 52 to change its movement direction.

[0064] Preferably, the coil module 54 also includes at least one pair of fifth coils 5403 corresponding to the pair of second magnetic members 273. That is, the pair of fifth coils 5403 corresponds to the pair of second magnetic members 273. When current flows through the pair of fifth coils 5403, the electromagnetic force generated between the pair of fifth coils 5403 and the pair of second magnetic members 273 drives the second base 52 and the coil module 54 to move relative to the first base 22 in a second direction. The second direction is perpendicular to the axial direction and the first direction, that is, the second base 52 and the coil module 54 move along the X-axis. When the direction of the current input into the pair of fifth coils 5403 is changed, the electromagnetic force generated between the pair of first coils 5403 and the pair of second magnetic members 273 can drive the second base 52 to change its movement direction.

[0065] In this embodiment, the coil module 54 includes two pairs of fifth coils 5403 corresponding to a pair of second magnetic parts 273, that is, the two pairs of fifth coils 5403 correspond to a pair of second magnetic parts 273 respectively; when different currents flow through the two pairs of fifth coils 5403, different electromagnetic forces are generated between the two pairs of fifth coils 5403 and the pair of second magnetic parts 273 respectively, and the two pairs of fifth coils 5403 and the pair of second magnetic parts 273 generate different driving forces to form a torque, so as to drive the second base 52 and the coil module 54 to rotate relative to the first base 22 along an axis parallel to the axial direction. When currents of the same magnitude flow through the two pairs of fifth coils 5403, the electromagnetic force generated between the two pairs of fifth coils 5403 and the pair of second magnetic members 273 drives the second base 52 and the coil module 54 to move relative to the first base 22 in a direction perpendicular to the axial direction, that is, along the X-axis; when the direction of the current input into the two fifth coils 5403 is changed, the electromagnetic force generated between the two pairs of fifth coils 5403 and the pair of second magnetic members 273 can drive the second base 52 to change its movement direction.

[0066] like Figure 12 As shown, in this embodiment, the coil module 54 includes a pair of clamping plates 542, two pairs of fourth coils 5401, and two pairs of fifth coils 5403 clamped between the pair of clamping plates 542. The two pairs of fourth coils 5401 and the two pairs of fifth coils 5403 form a rectangle. A through hole 5421 is defined in the center of each clamping plate 542, and the two pairs of fourth coils 5401 and the two pairs of fifth coils 5403 are disposed around the through hole 5421. A plurality of positioning openings 5423 are defined along the outer periphery of each clamping plate 542. These positioning openings 5423 are used to position the coil module 54 on the second base 52. Preferably, each clamping plate 542 has at least one pair of positioning holes 5425 disposed around the through hole 5421. Specifically, each clamping plate 542 is a rectangular plate with positioning holes 5423 provided at the four corners of the rectangular plate. Two pairs of fourth coils 5401 are located on two opposite sides of the rectangular plate, and two pairs of fifth coils 5403 are located on the other two opposite sides of the rectangular plate.

[0067] The two pairs of fourth coils 5401 correspond to a pair of first magnetic members 271, respectively, and the two pairs of fifth coils 5403 correspond to a pair of second magnetic members 273, respectively. When the fourth coils 5401 and / or the fifth coils 5403 are energized, electromagnetic forces of varying magnitude are generated between the two pairs of fourth coils 5401 and the pair of first magnetic members 271, and / or between the two pairs of fifth coils 5403 and the pair of second magnetic members 273, thereby driving the second base 52 and the coil module 54 to rotate relative to the first base 22 along an axis parallel to the axial direction. Specifically, the electromagnetic forces generated between the fourth coils 5401 and the fifth coils 5403 and the first and second magnetic members 271 and 273 drive the second base 52 and the coil module 54 to move in a direction perpendicular to the axial direction and / or rotate along an axis parallel to the axial direction, i.e., to move in the XOY plane and / or rotate along an axis parallel to the Z axis.

[0068] The second OIS mechanism also includes a flexible circuit board 55 connected to the coil module 54. The flexible circuit board 55 is equipped with a third magnetic induction driving element 551 corresponding to the first magnetic element 271 and a fourth magnetic induction driving element 553 corresponding to the second magnetic element 273. In this embodiment, two third magnetic induction driving elements 551 are spaced apart on the flexible circuit board 55 corresponding to the first magnetic element 271. When the photosensitive chip attached to the second base 52 is actuated, they calculate the changes in magnetic flux generated by the first magnetic element 271 to simultaneously control the second base 52's movement along the Y-axis and rotation along an axis parallel to the Z-axis. Two fourth magnetic induction driving elements 553 are spaced apart on the flexible circuit board 55 corresponding to the second magnetic element 273. When the photosensitive chip attached to the second base 52 is actuated, they calculate the changes in magnetic flux generated by the second magnetic element 273 to simultaneously control the second base 52's movement along the X-axis and rotation along an axis parallel to the Z-axis. A through-hole 554 is defined in the center of the flexible circuit board 55, and several positioning notches 555 are defined around the flexible circuit board 55. These positioning notches 555 are used to position the flexible circuit board 55 on the second base 52. Two opposing positioning holes 556 are defined around the through-hole 554. Connecting pins 557 are provided on one side of the flexible circuit board 55. Specifically, the flexible circuit board 55 is a rectangular plate with positioning notches 555 defined at its four corners. Two third magnetic induction drive elements 551 and two fourth magnetic induction drive elements 553 are located on adjacent sides of the rectangular plate.

[0069] Please also refer to Figure 4-Figure 5 and Figure 13 , Figure 13 yes Figure 4A magnified perspective view of the circuit board module 70 in the figure. The voice coil motor 100 also includes a circuit board module 70 disposed on the side of the second base 52 away from the first base 22. The circuit board module 70 is electrically connected to the first coil assembly 26, the second coil assembly 28, and the coil module 54. Specifically, the circuit board module 70 is electrically connected to the first coil assembly 26 and the second coil assembly 28 via the metal wires 248 of the cover 24. The circuit board module 70 is also electrically connected to the coil module 54 via the flexible circuit board 55. The circuit board module 70 is provided with electronic components such as a photosensitive chip 720. The circuit board module 70 is fixedly connected to the second base 52 and moves with the second base 52 relative to the first base 22, thereby driving the displacement of the photosensitive chip 720 for anti-shake compensation.

[0070] In this embodiment, the circuit board module 70 includes a bottom plate 72 corresponding to the bottom surface of the second base 52, a conductive member 73 connected to the bottom plate 72 and disposed around the bottom plate 72, and an extension plate 76 connected to the conductive member 73. The bottom plate 72 is electrically connected to the coil module 54, and the conductive member 73 is electrically connected to the first coil assembly 26 and the second coil assembly 28. The extension plate 76 is used to electrically connect to an external connector, and a clearance groove 735 is provided between a portion of the conductive member 73 and the bottom plate 72. Specifically, the conductive member 73 includes two flexible side plates 731 connected to the bottom plate 72 and disposed around opposite sides of the first base 22, and a connecting plate 75 connected between the two flexible side plates 731. The bottom plate 72 is fixedly connected to the bottom surface of the second base 52. The photosensitive chip 720 is located on the top surface of the bottom plate 72. When the bottom plate 72 is connected to the second base 52, the photosensitive chip 720 faces the receiving hole 520 of the second base 52. In this embodiment, the base plate 72 is a rectangular flexible printed circuit board. A first connecting portion 722 is provided protruding outward from the middle of one side of the base plate 72. The first connecting portion 722 is used to electrically connect to the connecting pin 557 of the flexible printed circuit board 55. Preferably, the first connecting portion 722 and the connecting pin 557 are connected by solder. In other embodiments, the base plate 72 may also be a circular circuit board, a polygonal circuit board, an oval circuit board, or a PCB of various shapes.

[0071] One end of the two flexible side panels 731 is respectively connected to the side of the bottom plate 72 provided with the first connecting portion 722. The other ends of the two flexible side panels 731 extend along the edge of the bottom plate 72 and are connected via the connecting plate 75. The connecting plate 75 is located on the side of the bottom plate 72 facing the first connecting portion 722. The bottom plate 72 and the two flexible side panels 731 form a clearance space 77, and the first base 22 is accommodated in the clearance space 77. Specifically, each flexible side panel 731 is U-shaped, and one end of the two flexible side panels 731 is respectively connected to the bottom plate 72 via a bent portion 732. The two bent portions 732 are located at opposite ends of the first connecting portion 722. The other end of each flexible side panel 731, away from the first connecting portion 722, is connected via the connecting plate 75. A second connecting portion 752 electrically connected to the first coil assembly 26 and the second coil assembly 28 is provided on the side of the connecting plate 75 away from the bottom plate 72; specifically, the second connecting portion 752 is electrically connected to the metal wire 248 of the cover body 24; preferably, the second connecting portion 752 and the metal wire 248 are connected by soldering. The extension plate 76 is connected to the side of the connecting plate 75 away from the second connecting portion 752. A avoidance groove 735 is provided between each flexible side plate 731 and the bottom plate 72. The avoidance groove 735 is used for the passage around the bottom of the first base 22 to connect to the external structure. By providing the avoidance groove 735, the portion of the conductive member 73 connected to the bottom plate 72 can be reduced, thereby reducing the obstruction of the conductive member 73 to the movement of the bottom plate 72 when the second base 52 moves. The flexible side plates 731, the connecting plates 75 and the extension plates 76 are all flexible circuit boards.

[0072] Please also refer to Figure 1-Figure 5 、 Figures 8-16 , Figure 14 yes Figure 1 A three-dimensional cross-sectional view of the voice coil motor 100 from one perspective; Figure 15 yes Figure 1A three-dimensional cross-sectional view of the voice coil motor 100 from another perspective; the flexible circuit board 55 is attached to the bottom surface of the coil module 54, so that the flexible circuit board 55 is connected to the fourth coil 5401 and the fifth coil 5403 in the coil module 54 through soldering. The through hole 554 of the flexible circuit board 55 is opposite to the through hole 5421 of the coil module 54, and the plurality of positioning holes 555 of the flexible circuit board 55 are opposite to the plurality of positioning holes 5423 of the coil module 54, and the two positioning holes 556 of the flexible circuit board 55 are opposite to the two positioning holes 5425 of the coil module 54; the flexible circuit board 55 is attached to the bottom surface of the coil module 54, so that the flexible circuit board 55 is connected to the fourth coil 5401 and the fifth coil 5403 in the coil module 54 through soldering. The side of the plate 55 facing away from the coil module 54 is placed on the top of the second base 52, so that the second positioning parts 5213 of the second base 52 are respectively inserted into the positioning holes 555 corresponding to the flexible circuit board 55 and the positioning holes 5423 corresponding to the coil module 54, and the two positioning posts 5215 of the second base 52 are respectively inserted into the two positioning holes 556 of the flexible circuit board 55 and the two positioning holes 5425 of the coil module 54, and the flexible circuit board 55 and the coil module 54 are fixed to the second base 52 by dispensing glue. The third magnetic induction driving element 551 and the fourth magnetic induction driving element 55 of the flexible circuit board 55 are respectively inserted into the second base 52. The components 553 are respectively accommodated in the avoidance holes 5218 of the second base 52; the circuit board module 70 is connected to the bottom of the second base 52, specifically, the bottom plate 72 is clamped in the avoidance groove 2517 of the second base 52 and fixed with glue, so that the second base 52 is accommodated in the avoidance space 77 of the circuit board module 70, and the first connecting portion 722 is soldered to the connecting pin 557; the plurality of second anti-collision components 523 are respectively positioned in the plurality of said fourth universal ball grooves 5214 of the second base 52, and the plurality of second universal balls 56 are respectively placed in the plurality of said fourth universal ball grooves 5214 of the second base 52 Each second universal ball 56 partially exposes its corresponding fourth universal ball groove 5214 within the universal ball groove 5214. The second base 52 is accommodated in the accommodation space 228 of the first base 22, so that the magnetic conductive member 5211 of the second base 52 is magnetically attracted to the first magnetic member 271 and the second magnetic member 273, respectively. The second universal ball 56 on the second base 52 is rollably abutted against the first universal ball grooves 2290 of the first base 22, preventing the second universal ball 56 from knocking the first and second bases 22 and 52 out of the grooves and causing abnormal performance. The first base 22 is accommodated in the clearance space 77 of the circuit board module 70, and the second connecting portion 752 is soldered to the metal wire 248 of the cover 24.At this time, there is a gap between the second base 52 and the first base 22 and they are connected by the second universal ball 56, so that the second base 52 is limited in freedom in the Z direction relative to the first base 22, so that the second base 52 can only slide along the XOY plane and / or rotate parallel to the Z axis within the accommodating space 228 relative to the first base 22; the impact part 5216 of the second base 52 is stopped on the inner side surface of the limiting ring 227 to limit the second universal ball 56 to separate the second base 52 from the first base 22, which can reduce the friction between the second base 52 and the first base 22; the second base 52 moves in the space surrounded by the limiting ring 227.

[0073] When the first coil 265 is energized, an electromagnetic force is generated between the first coil 265 on the first coil assembly 26 and the magnetic assembly 27 on the first base 22. The electromagnetic force pushes the first coil assembly 26 to move axially, and the first coil assembly 26 drives the second coil assembly 28 to move axially. That is, the electromagnetic force pushes the first coil assembly 26 and the second coil assembly 28 to move up and down axially within the space enclosed by the first base 22 and the cover 24, so that the lens attached to the second carrier 281 can achieve an autofocus function. During the movement of the first coil assembly 26 and the second coil assembly 28, the second connecting strip 2335 of the first elastic member 23 and the third connecting strip 2531 of the second elastic member 25 are elastically deformed. After the electromagnetic force disappears, the second connecting strip 2335 of the first elastic member 23 and the third connecting strip 2531 of the second elastic member 25 can recover their deformation to drive the first coil assembly 26 and the second coil assembly 28 to return to their original position.

[0074] When the second coil assembly 28 is energized, an electromagnetic force is generated between the second coil 283 and the third coil 285 and the magnetic assembly 27 on the first base 22. This electromagnetic force propels the second carrier 281 relative to the first carrier 261, causing the lens attached to the second carrier 281 to move along the XOY plane and / or rotate axially relative to the photosensitive chip 720 on the second base 52 within the space enclosed by the four positioning frames 220 of the first base 22, thereby offsetting lens shake and achieving the first OIS (Optical Image Stabilization) function. During the movement of the second carrier 281 relative to the second carrier 261, the first connecting bar 2331 of the first elastic member 23 undergoes elastic deformation along the XOY plane. After the electromagnetic force disappears, the first connecting bar 2331 can recover its deformation, driving the second coil assembly 28 to return to its original position. A plurality of first universal ball bearings 286 are respectively clamped by the second carrier 281 and the first carrier 261 in a rolling manner. The first magnetic induction drive element 295 cooperates with the first magnetic member 271, and the second magnetic induction drive element 296 cooperates with the second magnetic member 273 to provide feedback on the actual motion trajectory of the second carrier 281 relative to the first base 22, thereby adjusting the current magnitude and / or current direction of the second coil 283 and / or the third coil 285, thereby making the motion trajectory of the second carrier 281 more accurate, and thus the motion trajectory of the lens attached to the second carrier 281 more accurate, and achieving better anti-shake effect. Specifically, the first magnetic induction drive element 295 and the second magnetic induction drive element 296 are used to calculate the changes in magnetic flux generated by the first magnetic member 271 and the second magnetic member 273 when the lens attached to the second carrier 281 is actuated, thereby achieving simultaneous control of the first OIS anti-shake mechanism to move in the XOY plane and rotate along an axis parallel to the Z axis.

[0075] When the coil module 54 is energized, the fourth coil 5401 and the fifth coil 5403 generate an electromagnetic force between themselves and the magnetic assembly 27 on the cover 24. This electromagnetic force propels the second base 52 and the coil module 54 relative to the first base 22, causing the photosensitive chip 720 positioned on the second base 52 to move along the XOY plane and / or rotate axially within the accommodation space 228 of the first base 22, thereby offsetting lens shake and achieving the second OIS (Optical Image Stabilization) function. During the movement of the second base 52 relative to the first base 22, the magnetic conductive member 5211 of the second base 52 maintains a magnetic attraction with the magnetic assembly 27, and the plurality of second universal ball bearings 56 are respectively and rollingly clamped between the first base 22 and the second base 52. The third magnetic induction drive element 551 cooperates with the first magnetic member 271, and the fourth magnetic induction drive element 553 cooperates with the second magnetic member 273 to provide feedback on the actual motion trajectory of the second base 52 relative to the first base 22, thereby adjusting the current magnitude and / or current direction of the fourth coil 5401 and / or the fifth coil 5403, thereby making the motion trajectory of the second base 52 more accurate, and thus the motion trajectory of the photosensitive chip 720 attached to the second base 52 more accurate, and achieving better anti-shake effect. Specifically, the third magnetic induction drive element 551 and the fourth magnetic induction drive element 553 are used to calculate the changes in magnetic flux generated by the first magnetic member 271 and the second magnetic member 273 when the photosensitive chip 720 attached to the second base 52 is actuated, thereby achieving simultaneous control of the second base 52 and the circuit board module 70 in movement in the XOY plane and rotation along an axis parallel to the Z axis. Since the first base 22 and the bottom plate 72 fixed on the second base 52 are connected via the flexible side plates 731 and the connecting plates 75 , the reaction force generated is relatively small, facilitating the movement and restoration of the second base 52 and the bottom plate 72 .

[0076] The second base 52 and the first base 22 are connected by magnetic spacing, and a second universal ball 56 is provided between the second base 52 and the first base 22, thereby achieving low friction between the second base 52 and the first base 22; since the second base 52 and the magnetic component 27 always maintain a magnetic attraction state, the connection between the second base 52 and the first base 22 is more stable.

[0077] The first coil assembly 26 and the second coil assembly 28 of the voice coil motor 100 of the present invention are connected between the first base 22 and the cover 24 through the first elastic member 23 and the second elastic member 25, and the first coil assembly 26 generates an electromagnetic force through the cooperation of the first coil 265 and the magnetic assembly 27 to drive the coil assembly 26 to move axially to achieve the autofocus function; the second coil assembly 28 is connected to the first coil assembly 26 through a plurality of first universal balls 286, and the second coil assembly 28 is connected to the magnetic assembly through the second coil 283 and the third coil 285. The electromagnetic force generated by the interaction of the coil module 54 and the magnetic assembly 27 drives the second coil assembly 28 to move relative to the first base 22, thereby driving the movement of the second coil assembly 28 with the lens attached, achieving the first OIS (OIS) image stabilization function. The second base 52 is connected to the side of the first base 22 away from the cover 24 via a plurality of second universal ball bearings 56. The electromagnetic force generated by the interaction of the coil module 54 and the magnetic assembly 27 drives the second base 52 to move relative to the first base 22, thereby driving the movement of the bottom plate 72 with the photosensitive chip 720 attached, achieving the second OIS image stabilization function. This not only improves the image stabilization performance of the voice coil motor 100 and reduces component count, lowering manufacturing costs, but also reduces the axial dimension of the voice coil motor 100, thereby reducing the internal space occupied by the voice coil motor 100 in the electronic device, facilitating the layout of other electronic components in the electronic device.

[0078] See also Figure 16 and Figure 17 , Figure 17The figure is a schematic perspective view of a camera according to one embodiment of the present invention. The camera comprises the aforementioned voice coil motor 100, a lens module 300, and a photosensitive chip 720 disposed within the voice coil motor 100. The lens module 300 is connected to the second coil assembly 28 of the voice coil motor 100. The voice coil motor 100 drives the first coil assembly 26 and the second coil assembly 28 to move the lens module 300. The voice coil motor 100 also drives the photosensitive chip 720 to move relative to the lens module 300. Specifically, the rear end of the lens module 300 is connected to the mounting hole 2810 of the second carrier 281 through the through-hole 244 of the cover 24, while the front end of the lens module 300 is exposed through the through-hole 244 of the cover 24. When the camera is in use, the first coil assembly 26 is energized to generate an electromagnetic force between it and the magnetic assembly 27, and the electromagnetic force drives the first coil assembly 26 to move axially, thereby driving the lens module 300 to move together with the first coil assembly 26 and the second coil assembly 28 to achieve the autofocus function; the second coil assembly 28 is energized to generate an electromagnetic force between it and the magnetic assembly 27, and the electromagnetic force drives the second coil assembly 28 and the lens module 300 to move along the XOY plane and / or rotate axially, thereby achieving the first OIS anti-shake function; the coil module 54 is energized to generate an electromagnetic force between it and the magnetic assembly 27, and the electromagnetic force drives the second base 52 and the coil module 54 connected to the second base 52, the flexible circuit board 55 and the bottom plate 72 to move along the XOY plane and / or rotate axially, thereby driving the photosensitive chip 720 attached to the bottom plate 72 to move along the XOY plane and / or rotate axially to offset lens shake, thereby achieving the OIS anti-shake function.

[0079] See also Figure 18 , Figure 18 The figure is a schematic diagram of the three-dimensional structure of an electronic device provided in one embodiment of the present invention. The electronic device includes a housing 500, a motherboard 600 disposed within the housing 500, a display screen 700 disposed on the top surface of the housing 500, and a camera. The camera is disposed within the housing 500, and the camera and display screen 700 are electrically connected to the motherboard 600. In this embodiment, the electronic device is a mobile phone, and the lens module 300 is the front lens of the mobile phone. In other embodiments, the lens module 300 can also be a rear lens.

[0080] In other embodiments, the electronic device may also be, but is not limited to, any electronic device that requires a lens, such as a tablet computer, a display screen, a smart TV, an electronic watch, a smart bracelet, or the like.

[0081] The above is an implementation of the embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the embodiment of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A voice coil motor, characterized in that: The magnetic component is a magnetic component of the present invention and is a magnetic component of the present invention. The magnetic component comprises a first base, a cover body covering the first base, a first coil component arranged between the first base and the cover body, a second coil component accommodated in the inner cavity of the first coil component, and a magnetic component arranged at the first base and located between the first coil component and the second coil component; a first through hole is axially provided in the middle of the first base, and a plurality of positioning frames are provided on the top of the first base around the first through hole; the magnetic component comprises at least one pair of first magnetic members located on opposite sides of the second coil component and at least one pair of second magnetic members located on the other opposite sides of the second coil component, each of the positioning frames is provided with a positioning cavity for positioning the corresponding magnetic member, and the positioning cavity of each positioning frame passes through the side of the positioning frame facing the first through hole to form a first through groove, a pair of the first magnetic members The first coil assembly includes a first carrier and a first coil arranged around the first carrier, and the second coil assembly includes a second carrier, at least one pair of second coils arranged on the second carrier, and at least one pair of third coils arranged on the second carrier. The first carrier is slidably mounted on several of the positioning frames, the first magnetic assembly directly faces the second coil, and the second magnetic assembly directly faces the third coil; after the first coil assembly is energized, an electromagnetic force is generated between it and the magnetic assembly to drive the first coil assembly and the second coil assembly to move axially together; after the second coil assembly is energized, an electromagnetic force is generated between it and the magnetic assembly to drive the second coil assembly to move relative to the first coil assembly.

2. The voice coil motor according to claim 1, wherein: The electromagnetic force between the second coil module and the magnetic component is used to drive the second coil component to move relative to the first coil component in a plane perpendicular to the axial direction.

3. The voice coil motor according to claim 1, wherein: The first base includes a first support plate, the first through hole is opened in the middle of the first support plate, a plurality of positioning frames are protruded from the top surface of the first support plate, and the second coil assembly is accommodated in a receiving space surrounded by the plurality of positioning frames.

4. The voice coil motor according to claim 3, wherein: The positioning cavity of each positioning frame passes through a side surface of the positioning frame facing the first through hole, and / or the positioning cavity of each positioning frame passes through the first supporting plate.

5. The voice coil motor according to claim 1, wherein: The first carrier includes a second support plate and a first carrier frame surrounded by the second support plate, and the first coil is wound around the first carrier frame; the second support plate is provided with through grooves corresponding to the plurality of positioning frames, and the plurality of positioning frames are respectively inserted into the plurality of through grooves so that the first carrier frame is surrounded by the plurality of positioning frames.

6. The voice coil motor according to claim 5, wherein: The second coil assembly is supported on the top surface of the second support plate, a plurality of positioning frames are arranged around the second coil assembly, and a plurality of first universal balls are arranged between the second support plate and the second coil assembly.

7. The voice coil motor according to claim 6, wherein: Current flows through at least one pair of the second coils, and electromagnetic force is generated between the at least one pair of the second coils and the magnetic member to drive the second coil assembly to move relative to the first base along a first direction, wherein the first direction is perpendicular to the axial direction.

8. The voice coil motor according to claim 7, wherein: Current flows through at least one pair of the third coils, and electromagnetic force is generated between the at least one pair of the third coils and the magnetic member to drive the second coil assembly to move relative to the first base along a second direction, and the second direction is perpendicular to the first direction and the axial direction.

9. The voice coil motor according to claim 8, wherein: The number of the second coils and / or the third coils is at least two pairs. After the at least two pairs of the second coils and / or the at least two pairs of the third coils are energized, electromagnetic forces of different magnitudes are generated between the two pairs of the second coils and the magnetic assembly and / or between the two pairs of the third coils and the magnetic assembly, so as to drive the second coil assembly to rotate relative to the first base along an axis parallel to the axial direction.

10. The voice coil motor according to claim 1, wherein: The voice coil motor also includes a first elastic member and a second elastic member, the first elastic member is connected to the cover, the first coil assembly and the second coil assembly, the first elastic member has a preset elastic force to push the second coil assembly toward the first coil assembly; the second elastic member is connected to the first base and the first coil assembly, the first elastic member and the second elastic member are used for moving and resetting the first coil assembly and the second coil assembly.

11. The voice coil motor according to claim 1, wherein: The voice coil motor also includes a second base arranged on the side of the first base away from the cover body and a coil module positioned on the second base. When the coil module is energized, an electromagnetic force is generated between the coil module and the magnetic component to drive the second base and the coil module to move relative to the first base.

12. The voice coil motor according to claim 11, wherein: The coil module includes at least one pair of fourth coils. Current flows through the at least one pair of fourth coils, and electromagnetic force generated between the at least one pair of fourth coils and the magnetic component drives the second base and the coil module to move relative to the first base along a first direction, where the first direction is perpendicular to the axial direction.

13. The voice coil motor according to claim 12, wherein: The coil module includes at least one pair of fifth coils. Current flows through the at least one pair of fifth coils, and electromagnetic force generated between the at least one pair of fifth coils and the magnetic component drives the second base and the coil module to move relative to the first base along a second direction, where the first direction is perpendicular to the first direction and the axial direction.

14. The voice coil motor according to claim 11, wherein: The second base is connected to the first base via a plurality of second universal balls, and there is a gap between the second base and the first base.

15. A camera, characterized in that: It includes a voice coil motor as described in any one of claims 1 to 14, a lens module and a photosensitive chip arranged on the voice coil motor, the lens module is connected to the second coil assembly of the voice coil motor, the voice coil motor drives the first coil assembly to move to drive the lens module to move axially along the second coil assembly; the voice coil motor drives the second coil assembly to move to drive the lens module to move along a plane perpendicular to the axial direction, and the voice coil motor drives the photosensitive chip to move relative to the lens module.

16. An electronic device, characterized in that: It includes a shell, a mainboard arranged in the shell, and the camera as claimed in claim 15, wherein the camera is arranged in the shell and is electrically connected to the mainboard.

Images