CN216118173U - Lens driving mechanism - Google Patents

Abstract

The utility model discloses a lens driving mechanism which comprises a shell, a base, a carrier, a frame, an upper reed, a lower reed, a magnet group and a driving circuit board, wherein the frame is provided with a central opening, the magnet group is arranged in the frame around the central opening, the carrier is arranged in the central opening, the lower reed movably connects the lower surfaces of the frame and the carrier, the upper reed movably connects the upper surfaces of the frame and the carrier, the driving circuit board is arranged below the frame and the carrier and is provided with a second driving coil, the second driving coil is matched with the magnet group to drive the carrier and the frame to move on a plane vertical to an optical axis, the base is provided with a second groove for installing a buffer part, the bottom end of the frame is provided with a second connecting part, the second connecting part is inserted in the second groove, and when the frame moves relative to the base, the second connecting part and the buffer part assist in resetting of the frame. The utility model realizes the resetting operation of the frame and the carrier through the connecting structure of the second connecting piece and the buffer piece.

Description

Lens driving mechanism

Technical Field

The utility model relates to the technical field of optical imaging equipment, in particular to a lens driving mechanism.

Background

With the great popularization of smart phones, the application range of mobile phone cameras is larger and larger, however, most of the mobile phone cameras are reset through parts such as reeds, and the resetting process is usually not sensitive enough after a carrier moves relative to a frame or the frame moves relative to a base.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide a lens driving mechanism to solve the above-mentioned problems in the prior art.

In order to solve the above problems, according to one aspect of the present invention, there is provided a lens driving mechanism including a housing, a base, a carrier, a frame, an upper spring, a lower spring, a magnet group, and a driving circuit board, the housing and the base cooperating to form a chamber accommodating the carrier, the frame, the upper spring, the lower spring, the magnet group, and the driving circuit board,

the frame is provided with a central opening, the magnet group is arranged in the frame around the central opening, the carrier is arranged in the central opening, the lower reed movably connects the lower surface of the frame and the lower surface of the carrier, the upper reed movably connects the upper surface of the frame and the upper surface of the carrier,

the drive circuit board is arranged below the frame and the carrier and is provided with a second drive coil, the second drive coil is matched with the magnet group to drive the carrier and the frame to move on a plane vertical to the optical axis, and the drive circuit board is arranged below the frame and the carrier and is provided with a second drive coil, wherein the second drive coil is matched with the magnet group to drive the carrier and the frame to move on the plane vertical to the optical axis

The base is provided with a second groove for installing a buffer piece, a second connecting piece is arranged at the bottom end of the frame and is inserted into the second groove, and when the frame moves relative to the base, the second connecting piece and the buffer piece assist in resetting the frame.

In one embodiment, the base has four end corners, each end corner is provided with a supporting protrusion, and each supporting protrusion is provided with at least one second groove.

In one embodiment, the second connecting member is formed to extend from a lower surface of the frame by a certain distance, and the frame is further provided with a third connecting member integrally formed with the second connecting member and protruding outside the frame to position the second connecting member during the frame injection molding process.

In one embodiment, the second connecting piece is a metal rod, and the buffer piece is damping glue.

In one embodiment, the carrier is provided with a first driving coil, the first driving coil is matched with the magnet group to drive the carrier to move along the optical axis direction, a first groove is formed in the bottom end of the carrier to mount a buffer member, a first connecting member is arranged at the bottom end of the frame and is inserted into the first groove, and when the carrier moves along the optical axis relative to the frame, the first connecting member and the buffer member assist the carrier to reset.

In one embodiment, the first connecting member includes a first portion protruding from an inner wall of the frame and a second portion extending from the first portion in the optical axis direction, the second portion being configured to protrude into the first groove.

In one embodiment, the frame is further provided with a third connecting member integrally formed with the first and second connecting members and protruding outside the frame to position the first and second connecting members during the frame casting process.

In one embodiment, the bottom end of the base is provided with two position sensors, the two position sensors and the driving circuit board are electrically connected with the built-in circuit of the base, and the two position sensors are respectively matched with two different magnet groups to carry out position monitoring on the movement of the lens on a plane perpendicular to the optical axis.

In one embodiment, a notch is formed on the outer side of the supporting protrusion, a suspension wire connecting hole is formed in the notch, and the lower end of the suspension wire is connected into the suspension wire connecting hole.

In one embodiment, the driving circuit board is provided with two sensor avoidance holes to avoid the two sensors.

The base and the frame are connected through the second connecting piece, and the resetting operation of the frame and the carrier is realized through the connecting structure of the second connecting piece and the buffer piece.

Drawings

Fig. 1 is an exploded perspective view of a lens driving mechanism according to an embodiment of the present invention.

Fig. 2 is a perspective view of a frame of one embodiment of the present invention.

Fig. 3 is a perspective view of a carrier according to one embodiment of the present invention.

Fig. 4 is another perspective view of a carrier according to one embodiment of the present invention.

Fig. 5 is another perspective view of the frame of one embodiment of the present invention.

Fig. 6 is a perspective view of a base of one embodiment of the present invention.

Fig. 7 is a perspective view of a driving circuit board according to an embodiment of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the utility model can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate the spirit of the technical solution of the present invention.

In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the following description, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms.

The present disclosure generally relates to a lens driving mechanism, which can be used in a terminal product such as a mobile phone and a tablet computer to cooperate with a lens to achieve functions of taking a picture and recording a video. For convenience of description, the present application introduces the concept of "optical axis" to refer to the direction of propagation of light rays within an optical element, which is an abstraction and does not mean that there is an axis in a physical sense, and the direction along the optical axis is referred to as the longitudinal direction.

It should be noted that the features shown in the drawings of the present application may belong to one embodiment or different embodiments as long as there is no conflict between the features. For the sake of brevity, the same drawing may be used to describe different embodiments, i.e., the same drawing of the present application may be used to embody features of different embodiments.

Fig. 1 is an exploded perspective view of a lens driving mechanism according to an embodiment of the present invention, fig. 2 is a perspective view of a frame 40 according to an embodiment of the present invention, fig. 3 is a perspective view of a carrier 30 according to an embodiment of the present invention, as shown in fig. 1 to 3, and in an embodiment, a lens driving mechanism 100 includes a housing 10, a base 20, a carrier 30, a frame 40, an upper spring 50, a lower spring 60, and a magnet group 70. Housing 10 cooperates with base 20 to form a chamber to receive carrier 30, frame 40, upper spring 50, lower spring 60, and magnet pack 70. It should be noted that the chamber may be an open space or a closed space, and may have a regular shape or an irregular shape, which is not limited herein. The carrier 30 is used for mounting the lens a and is wound with a first driving coil 31, the frame 40 has a central opening 41, the carrier 30 is disposed in the central opening 41, the magnet group 70 is disposed in the frame 40 around the central opening 41 and cooperates with the first driving coil to drive the carrier 30 and the lens a in the carrier 30 to move in the optical axis direction relative to the frame 40, so as to realize an optical zoom function.

The lower spring 60 movably couples the lower surface of the carrier 30 to the frame 40, and the upper spring 60 movably couples the upper surface of the carrier 30 to the frame 40 for a restoring operation of the carrier 30 after the carrier 30 moves relative to the frame 40. The bottom end of the carrier 30 is provided with a first groove 32 for installing the buffer member 33, the bottom end of the frame 40 is provided with a first connecting member 42, the first connecting member 42 is inserted into the first groove 32, and when the carrier 30 moves relative to the frame 40 along the optical axis direction, the first connecting member 42 and the buffer member 33 assist the carrier 30 in resetting movement. By this arrangement, the carrier 30 is reset more quickly and with greater sensitivity.

As shown in fig. 2-3, the size of the first slot 32 is greater than the size of the first link 42, i.e., the length and width of the first slot 32 are both greater than the length and width of the first link 42, such that the first link 42 can move within the first slot 32 within a certain range. Alternatively, the first connecting member 42 is a metal rod, and the buffer member 33 is damping rubber. The metal rod is inserted into the damping rubber, and when the carrier 30 moves in the optical axis direction relative to the frame 40, the elastic deformation of the damping rubber can assist the carrier in resetting.

Referring to fig. 2, the first connection member 42 includes a first portion 421 protruding from an inner wall of the frame 40 and a second portion 422 extending from the first portion 421 in the optical axis direction, the second portion 422 being adapted to protrude into the first recess 32. In this case, it is only necessary that the second portion 422 is movable within the first recess 32, and therefore, it is only necessary that the size of the second portion 422 is smaller than that of the first recess 32, and the size of the first portion 421 may be larger or smaller than that of the first recess 32. Alternatively, the first portion 421 protrudes inward in a direction perpendicular to the inner wall of the frame 40, and the second portion 422 protrudes upward in a direction perpendicular to the first portion 421.

In one embodiment, as shown in fig. 2, the frame 40 is further provided with a third connecting member 43, and the third connecting member 43 is integrally formed with the first connecting member 42 and extends out of an outer sidewall of the frame 40 to position the first connecting member 42 during the casting of the frame 40. The frame 40 of the present invention may be formed by means of casting, and the first connecting member 42 is preferably a metal rod which is previously placed in a mold and positioned by the third connecting member 43 when the frame 40 is desired to be cast in the mold. The third link 43 is preferably a metal rod and is integrally formed with the first link 42, reducing the processing cost and improving the strength of the first link 42. In one embodiment, the third connecting member 43 is disposed substantially parallel to the first portion 421 of the first connecting member 42, and preferably, the third connecting member 43 is located on the same plane as the first portion 421 of the first connecting member 42.

Fig. 4 is another perspective view of the carrier 30 according to an embodiment of the present invention, as shown in fig. 3 to 4, in an embodiment, referring to fig. 3 to 4, the carrier 30 is provided inside with a central opening 36 for mounting a lens, a body portion of the carrier is formed around the central opening 36, a groove for mounting the first driving coil 31 is provided on an outer side wall of the body portion, a post 33 is provided adjacent to the groove, the post 33 is wound with a wire, one end of the wire is electrically connected to the first driving coil 31, and the other end of the wire is electrically connected to the upper spring, so that an external circuit is electrically connected to the first driving coil 31 through the upper spring.

Fig. 5 is another perspective view of the frame 40 according to an embodiment of the present invention, and optionally, as shown in fig. 5 and 4, the inner side wall of the frame 40 is provided with a limiting groove 44, and the post 33 of the carrier 30 is engaged with the limiting groove 44 to limit the carrier 30. That is, when the carrier 30 performs a movement in the optical axis direction with respect to the frame, the stopper groove 44 restricts the movement of the carrier 30 with respect to the frame 40 in a plane perpendicular to the optical axis.

In one embodiment, as shown in fig. 3 and 4, the top end of the carrier 30 is provided with a top protrusion 341, and the bottom end of the carrier is provided with a bottom protrusion 342, so that the top protrusion 341 and the bottom protrusion 342 can perform an anti-collision function when the carrier moves in the optical axis direction. Alternatively, the first groove 32 is disposed adjacent to the bottom protrusion 342, for example, the side wall of the first groove 32 may extend downward to be coplanar with the outer wall of the bottom protrusion 342.

Referring back to fig. 1, in one embodiment, the lens driving mechanism 100 further includes suspension wires 80, for example, the lens driving mechanism 100 may include four sets of suspension wires disposed at four corners of the lens driving mechanism 100, respectively, and optionally, lower ends of the suspension wires are disposed at four corners of the base 20, and upper ends of the suspension wires are connected to the upper spring 50. Alternatively, there are two upper spring leaves, and each upper spring leaf 50 includes a frame connecting portion 51 connected to the frame 40 and a carrier connecting portion 52 connected to the carrier 30, and the frame connecting portion 51 and the carrier connecting portion 52 are connected by an elastic member 53. The carrier attachment portion 52 is provided with a wire attachment plate 521 for connection with the wires on the posts 33 of the carrier 30, and the frame attachment portion 51 is provided with a wire attachment point for connection with the top end of the suspension wire 80.

With continued reference to fig. 1, optionally, built-in wiring (not shown) is provided within the base 20, the built-in wiring being electrically connected to the suspension wire 80, the built-in wiring being provided with an external circuit access terminal, thereby connecting an external circuit to the suspension wire 80 through the built-in wiring, and further being electrically connected to the upper spring 50 and the first driving coil 31 through the suspension wire 80. External current flows into the first driving coil 31 through the built-in line, the suspension wire 80 and the upper spring 50, and after the first driving coil 31 is electrified, the first driving coil is subjected to electromagnetic force in a magnetic field generated by the magnet group 70, so that the carrier 30 is driven to move along the optical axis direction, and optical zooming is realized. In the process that the carrier 30 moves along the optical axis direction, the buffer member 33 such as damping rubber performs an elastic deformation function, the auxiliary carrier performs a reset operation, and the top protrusion arranged at the top end of the carrier 30 and the bottom protrusion arranged at the bottom end of the carrier perform an anti-collision function.

In another embodiment, the lens driving mechanism 100 may further include a driving circuit board 90, the driving circuit board 90 may be, for example, a flexible circuit board (FPC), and the driving circuit board 90 is provided with a second driving coil (not shown) which cooperates with the magnet assembly 70 to drive the frame 40 and the carrier 30 to move on a plane perpendicular to the optical axis, so as to implement an optical anti-shake function. That is, the lens driving mechanism 100 can realize auto zoom and optical anti-shake functions. When the magnet group 70 is engaged with the first driving coil 31, the driving carrier 30 moves in the optical axis direction relative to the frame 40 within the frame 40, and a zoom function is realized. When the magnet group 70 is engaged with the second driving coil, since the magnet group 70 is fixedly mounted on the frame 70, the driving frame 40 moves on a plane perpendicular to the optical axis by the interaction of the second driving coil and the magnet group 70, thereby implementing an optical anti-shake function.

Alternatively, two mutually perpendicular side portions of the driving circuit board 90 may be provided with one second driving coil, respectively, by which the frame 40 is driven to move on two mutually perpendicular axes on a plane perpendicular to the optical axis, thereby achieving an optical anti-shake function. It should be noted that the frame 40 and the carrier 30 are relatively movable along the optical axis and fixed to each other in the direction perpendicular to the optical axis, so that when the frame 40 moves on the plane perpendicular to the optical axis, the carrier 30 and the lens a fixedly mounted in the carrier 30 are moved together to achieve the optical anti-shake function.

It should be noted that, although the complete structure of the lens driving mechanism 100 is shown in the drawings and has the zooming function and the optical anti-shake function, it should be understood by those skilled in the art that, in different embodiments, the lens driving mechanism 100 may have only the zooming function or may have both the zooming function and the optical anti-shake function.

Next, a lens driving mechanism according to another embodiment of the present invention will be described with reference to fig. 1 to 5 and fig. 6 and 7 again. It should be noted that the features shown in fig. 1 to 7 are not all necessary features of the present embodiment, fig. 6 is a perspective view of the base 20 of an embodiment of the present invention, and fig. 7 is a perspective view of the driving circuit board 90 of an embodiment of the present invention, that is, in some embodiments, some of the features shown in fig. 1 to 7 may not be needed, for example, in an embodiment, the lens driving mechanism may only implement an optical anti-shake function, and the zoom function may be implemented by other devices such as a pan/tilt head. That is, the carrier 30 may not be provided with the first drive coil.

As shown in fig. 1 to 7, in another embodiment, the lens driving mechanism 100 includes a housing 10, a base 20, a carrier 30, a frame 40, an upper spring 50, a lower spring 60, a magnet group 70, and a driving circuit board 90, and the housing 10 and the base 20 cooperate to form a chamber for accommodating the carrier 30, the frame 40, the upper spring 50, the lower spring 60, the magnet group 70, and the driving circuit board 90. The frame 40 has a central opening 41, the magnet assembly 70 is disposed in the frame around the central opening 41, the carrier 30 is disposed in the central opening 41, the lower spring 60 movably connects the lower surface of the frame 40 and the lower surface of the carrier 30, the upper spring 50 movably connects the upper surface of the frame 40 and the upper surface of the carrier 30, and the upper spring 50 and the lower spring 60 are used for the returning operation of the carrier 30.

The driving circuit board 90 is disposed below the frame 40 and the carrier 30 and is provided with a second driving coil, which cooperates with the magnet assembly 70 to drive the carrier 30 and the frame 40 to move on a plane perpendicular to the optical axis, so as to implement an optical anti-shake function. The base 20 is provided with a second groove 21 for installing the buffer 22, the bottom end of the frame 40 is provided with a second connecting piece 45, the second connecting piece 45 is inserted into the second groove 21, the base 20 and the frame 40 are connected through the second connecting piece 45, and the resetting operation of the frame 40 and the carrier 30 is realized through the connecting structure of the second connecting piece 45 and the buffer 22, that is, when the frame 40 moves relative to the base 20, the second connecting piece 45 and the buffer 22 assist the frame 40 and the carrier 30 to reset.

In one embodiment, the base 20 has four end corners, each end corner is provided with a supporting protrusion 24, each supporting protrusion 24 is provided with a second groove 21, correspondingly, the bottom end of the frame 40 is provided with four second connecting members 45, each connecting member 45 corresponds to one second groove 21, when the frame 40 is mounted on the base 20, the four second connecting members 45 of the frame 40 respectively extend into the four second grooves 21 on the four end corners of the base 20, and since each second groove 21 is provided with a buffer member, the four second connecting members 45 extend into the buffer member to connect the base 20 and the frame 40. After the frame 40 moves in a plane perpendicular to the optical axis, the frame 40 can be rapidly restored to its original position by the elastic action of the buffer and the second link 45.

Optionally, the second connecting member 45 is a metal rod, the buffer member 22 is damping glue, the damping glue is disposed in the second groove 21, the metal rod is inserted into the damping glue, and after the frame moves on a plane perpendicular to the optical axis direction, the frame can be quickly restored under the elastic action of the damping glue and the metal rod.

In one embodiment, the second connecting member 45 is formed to extend downward from the lower surface of the frame 40 by a certain distance and protrude from the lower surface of the frame 40. Optionally, the frame 40 is further provided with a third connecting member 43, and the third connecting member 43 is integrally formed with the second connecting member 45 and extends outside the frame to position the second connecting member 45 during the casting process of the frame 40. The frame 40 can be formed, for example, by casting, and the second connecting member 45 is preferably a metal rod which is previously placed in the mold and positioned by the third connecting member 43 when the frame 40 is cast into the mold. The third link 43 is preferably also a metal rod and is integrally formed with the second link 45, thereby reducing the processing cost and improving the strength of the second link 45.

In one embodiment, the third link 43 is disposed substantially perpendicular to the second link 45. That is, the second connecting member 45 is protruded downward substantially in a direction parallel to the optical axis, and the third connecting member 45 is protruded substantially in a direction perpendicular to the optical axis toward the side of the frame 40, thereby facilitating the positioning of the second connecting member 45.

In one embodiment, the support protrusion 24 is provided with a notch 241 at an outer side thereof, a suspension wire coupling hole 242 is formed in the notch 241, and the lower end of the suspension wire 80 is coupled to the suspension wire coupling hole 242.

In one embodiment, as shown in fig. 1, the driving circuit board 90 is disposed below the frame 40 and the carrier 30 and is provided with a second driving coil, which cooperates with the magnet assembly 70 to drive the carrier 30 and the frame 40 to move on a plane perpendicular to the optical axis, so as to realize the optical anti-shake function. Wherein, the base 20 is provided with a second groove 21 for installing the buffer 22, the bottom end of the frame 40 is provided with a second connecting piece 45, the second connecting piece 45 is inserted in the second groove 21, and when the frame 40 moves relative to the base 20, the second connecting piece 45 and the buffer 22 assist the frame 40 to reset. The carrier 30 is provided with a first driving coil 31, the first driving coil 31 is matched with the magnet group 70 to drive the carrier 30 to move along the optical axis direction, the bottom end of the carrier 30 is provided with a first groove 32 to mount a buffer member, the bottom end of the frame 40 is provided with a first connecting member 42, the first connecting member 42 is inserted into the first groove 32, and when the carrier 30 moves along the optical axis relative to the frame 40, the first connecting member 42 and the buffer member assist the carrier 30 to reset. Alternatively, the first connecting member 42 is a metal rod, and the buffer member 33 is damping rubber. The metal rod is inserted into the damping rubber, and when the carrier 30 moves in the optical axis direction relative to the frame 40, the elastic deformation of the damping rubber can assist the carrier in resetting.

In one embodiment, the frame 40 is further provided with a third connecting member 43, and the third connecting member 43 is integrally formed with the first connecting member 42 and the second connecting member 45 and extends outside the frame to position the first connecting member 42 and the second connecting member 45 during the frame injection molding process. Alternatively, the first, second and third connectors 42, 45, 43 are constructed of metal rods and are formed as a unitary structure built into the end corners of the frame 40.

In one embodiment, as shown in fig. 1, the bottom end of the base 20 is provided with two sensor mounting portions 23 for mounting position sensors, both of which are electrically connected to the base built-in circuit 21, and a driving circuit board, which are respectively matched with two different magnet groups for position monitoring of the movement of the lens on a plane perpendicular to the optical axis.

In one embodiment, the drive circuit board 90 is provided with two sensor avoidance holes 92 to avoid two sensors.

While the preferred embodiments of the present invention have been illustrated and described in detail, it should be understood that various changes and modifications of the utility model can be effected therein by those skilled in the art after reading the above teachings of the utility model. Such equivalents are intended to fall within the scope of the claims appended hereto.

Claims (10)

1. A lens driving mechanism is characterized by comprising a shell, a base, a carrier, a frame, an upper reed, a lower reed, a magnet group and a driving circuit board, wherein the shell and the base are matched to form a cavity for accommodating the carrier, the frame, the upper reed, the lower reed, the magnet group and the driving circuit board,

the frame is provided with a central opening, the magnet group is arranged in the frame around the central opening, the carrier is arranged in the central opening, the lower reed movably connects the lower surface of the frame and the lower surface of the carrier, the upper reed movably connects the upper surface of the frame and the upper surface of the carrier,

the drive circuit board is arranged below the frame and the carrier and is provided with a second drive coil, the second drive coil is matched with the magnet group to drive the carrier and the frame to move on a plane vertical to the optical axis, and the drive circuit board is arranged below the frame and the carrier and is provided with a second drive coil, wherein the second drive coil is matched with the magnet group to drive the carrier and the frame to move on the plane vertical to the optical axis

The base is provided with a second groove for installing a buffer piece, a second connecting piece is arranged at the bottom end of the frame and is inserted into the second groove, and when the frame moves relative to the base, the second connecting piece and the buffer piece assist in resetting the frame.

2. A lens driving mechanism according to claim 1, wherein said base has four end corners, each end corner being provided with a supporting projection, each supporting projection being provided with at least one of said second grooves.

3. The lens driving mechanism according to claim 1, wherein the second connecting member is formed to extend from a lower surface of the frame by a certain distance, and the frame is further provided with a third connecting member which is formed integrally with the second connecting member and protrudes outside the frame to position the second connecting member during the frame molding process.

4. The lens driving mechanism according to claim 3, wherein the second connecting member is a metal rod, and the buffer member is a damping paste.

5. The lens driving mechanism according to claim 1, wherein the carrier has a first driving coil, the first driving coil cooperates with the magnet assembly to drive the carrier to move along the optical axis, and a first groove is formed at a bottom end of the carrier to receive a buffer member, and a first connecting member is formed at a bottom end of the frame, the first connecting member is inserted into the first groove, and the first connecting member and the buffer member assist the carrier to perform the restoring movement when the carrier moves along the optical axis relative to the frame.

6. The lens driving mechanism according to claim 5, wherein the first link includes a first portion protruding from an inner wall of the frame and a second portion extending from the first portion in the optical axis direction, the second portion being configured to protrude into the first groove.

7. The lens driving mechanism according to claim 5, wherein the frame is further provided with a third connecting member integrally formed with the first and second connecting members and protruding outside the frame to position the first and second connecting members during the frame molding process.

8. A lens driving mechanism according to claim 1, wherein the base is provided at a bottom end thereof with two position sensors, and the two position sensors and the driving circuit board are electrically connected to the base built-in wiring, and the two position sensors are respectively associated with two different groups of magnets to perform position monitoring of the movement of the lens in a plane perpendicular to the optical axis.

9. The lens driving mechanism according to claim 2, wherein a notch is provided on an outer side of the support protrusion, a suspension wire connection hole is provided in the notch, and a lower end of the suspension wire is connected to the suspension wire connection hole.

10. The lens driving mechanism according to claim 1, wherein the driving circuit board is provided with two sensor avoidance holes to avoid the two sensors.

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