CN116256928A - Lens driving mechanism and frame assembly thereof - Google Patents

Abstract

The invention discloses a lens driving mechanism and a frame assembly thereof, wherein the frame assembly is used for the lens driving mechanism, the lens driving mechanism comprises a driving motor, the frame assembly comprises a frame, a movable bracket and an elastic piece, the frame is annular, and a first mounting position is arranged at the bottom of the frame; the movable support is annular and is arranged in the ring of the frame, a second installation position is arranged at the bottom of the movable support, the second installation position deviates towards the top from the first installation position, and the movable support is used for installing a driving motor; the elastic piece is elastic, the outer end of the elastic piece is connected with the first installation position, and the inner end of the elastic piece is connected with the first installation position. The lens driving mechanism can stably drive the lens to focus and prevent the lens from shaking so as to improve shooting quality.

Description

Lens driving mechanism and frame assembly thereof

Technical Field

The present invention relates to electronic devices, and particularly to a lens driving mechanism and a frame assembly thereof.

Background

With the development of electronic technology, portable consumer electronic products, such as mobile phones, palm game players, and technologies, are increasingly popular, and are developed toward convenient and light-weighted designs, so as to provide more choices for users.

In practice, in order to adapt to photographing of various scenes, the lens needs to be continuously focused, and the lens anti-shake lens needs to be prevented in the focusing or photographing process. In the prior art, a lens driving mechanism is generally used for driving a lens along an optical axis direction to adjust a focal length, the lens driving mechanism comprises a carrier and a movable bracket, the carrier is used for mounting the lens, and the carrier can drive the lens to move along the optical axis.

The carrier is arranged in the movable support, and the movable support can move along the direction perpendicular to the optical axis so as to prevent the lens from shaking. The movable support needs to be restored to the original state after movement, because there is a need to develop a lens driving mechanism that can make the movable support stable and quickly reset.

Disclosure of Invention

The present invention is directed to a lens driving mechanism and a frame assembly thereof, which solve the above-mentioned problems.

In order to solve the above technical problem, the present invention provides a frame assembly for a lens driving mechanism, the lens driving mechanism including a driving motor, including:

the frame is annular, and a first installation position is arranged at the bottom of the frame;

the movable support is annular and is arranged in the ring of the frame, a second installation position is arranged at the bottom of the movable support, the second installation position deviates towards the top from the first installation position, and the movable support is used for installing a driving motor;

the elastic piece is elastic, the outer end of the elastic piece is connected with the first installation position, and the inner end of the elastic piece is connected with the first installation position.

In one embodiment, the bottom surface of the movable support is flush with the bottom surface of the frame and is provided with a groove, the groove is formed by recessing the outer surface of the movable support towards the inside, and the second mounting position is located on the top wall of the groove.

In one embodiment, the bottom surface of the frame is provided with a mounting groove, the mounting groove is formed by recessing the inner surface of the frame towards the outside, and the first mounting position is positioned on the top wall of the mounting groove.

In one embodiment, the mounting groove has a depth in the axial direction that is less than a depth in the axial direction of the groove.

In one embodiment, the movable bracket and the frame are both rectangular and annular, the four first mounting positions are respectively located at four corners of the frame, and the four second mounting positions are respectively located at four corners of the movable bracket; the outer ends of the four elastic pieces are respectively connected with the four first installation positions, and the inner ends of the four elastic pieces are respectively connected with the four second installation positions.

In one embodiment, the first mounting location is provided with a first connection post; the second installation position is provided with a second connecting column, the outer end of the elastic piece is provided with a first connecting hole sleeved on the first connecting column, and the inner end of the elastic piece is provided with a second connecting hole sleeved on the second connecting column.

In one embodiment, the inner end of the mounting groove is opposite to the groove, the depth of the inner end of the mounting groove along the axial direction is smaller than or equal to the depth of the groove along the axial direction, the depth of the mounting groove gradually increases from the inner end to the outer end, and the first mounting position is located at the outer end of the mounting groove.

In one embodiment, the mounting slot includes:

a first groove body formed by recessing an inner surface of the frame toward the outside, and having a depth in an axial direction gradually decreasing from the inner surface to an outer surface of the frame; and

the second groove body is formed by recessing two side walls of the first groove body opposite to each other and is positioned at one end far away from the inner surface of the frame, and the two first connecting columns are positioned on the second groove body;

the outer end of the elastic piece is provided with two first connecting holes sleeved on the two first connecting columns respectively, and the inner end of the elastic piece is provided with two second connecting holes sleeved on the two second connecting columns respectively.

In one embodiment, the inner wall of the frame is provided with a limit groove, the limit groove extends from the top surface of the frame towards the bottom surface and is located at the corner of the frame, the outer surface of the movable support is provided with a limit protrusion, the limit protrusion is located in the limit groove, and the size of the limit protrusion along the circumferential direction is smaller than that of the limit groove along the circumferential direction.

In one embodiment, two limit grooves are positioned at opposite angles of the frame, and two limit protrusions are respectively positioned in the two limit grooves.

In one embodiment, the frame comprises four side plates, the four side plates are connected end to form a ring shape, each side plate is provided with a coil, four side parts of the movable support are respectively provided with a magnet group, the magnet groups are matched with the coils to drive the movable support to move, and the elastic piece is operable to drive the movable support to reset.

The present invention also relates to a lens driving mechanism comprising:

the frame assembly described above;

a base mounted to a bottom of the frame assembly;

the shell is wrapped outside the frame assembly and connected with the base;

the driving motor is arranged in the movable bracket;

the frame is provided with a plurality of groups of coils, the movable support is provided with a plurality of groups of magnet groups, and the plurality of groups of magnet groups are matched with the plurality of groups of coils to drive the movable support and the driving motor to move.

The lens driving mechanism can stably drive the lens to focus and prevent the lens from shaking so as to improve shooting quality.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

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

Fig. 2 is an assembled view of the base, frame, movable bracket, elastic member, external circuit board, internal circuit board and driving motor in the embodiment shown in fig. 1.

Fig. 3 is an assembled cross-sectional view of the base, frame, movable bracket, resilient member, external circuit board, internal circuit board and drive motor of the embodiment of fig. 2.

Fig. 4 and 5 are assembled views of the frame assembly of the embodiment of fig. 1.

Fig. 6 is an exploded view of the mid-frame assembly of the embodiment of fig. 4.

Fig. 7 is a perspective view of the frame, movable bracket, spring and internal circuit board of the embodiment shown in fig. 1.

Fig. 8 is an exploded view of the drive motor of the embodiment shown in fig. 1.

Reference numerals: 100. a lens driving mechanism; 1. a frame; 11. a side plate; 12. a bottom plate; 13. an avoidance groove; 14. a receiving groove; 15. a mounting groove; 151. a first tank body; 152. a second tank body; 16. a first connection post; 17. a limit groove; 2. a movable bracket; 21. a groove; 22. a second connection post; 23. a limit protrusion; 24. a magnet; 3. an elastic member; 31. an outer end; 311. a first connection hole; 32. an inner end; 321. a second connection hole; 4. a drive motor; 41. a housing; 411. a magnet; 42. a carrier; 43. a base; 431. an extension; 44. an upper reed; 45. a lower reed; 5. a housing; 6. a base; 7. an external circuit board; 71. a first portion; 72. a second portion; 8. an internal circuit board; 81. an annular plate; 82. a side circuit board; 83. a coil.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous specific details are set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.

In the following description, for the purposes of explanation of 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 an embodiment 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.

Throughout the specification and claims, unless the context requires otherwise, the word "comprise" and variations such as "comprises" and "comprising" will be understood to be open-ended, meaning of inclusion, i.e. to be interpreted to mean "including, but not limited to.

The following detailed description of various embodiments of the present invention will be provided in connection with the accompanying drawings to provide a clearer understanding of the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the invention, but rather are merely illustrative of the true spirit of the invention.

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, 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.

As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.

In the following description, for the purposes of clarity of presentation of the structure and manner of operation of the present invention, the description will be made with the aid of directional terms, but such terms as "forward," "rearward," "left," "right," "outward," "inner," "outward," "inward," "upper," "lower," etc. are to be construed as convenience, and are not to be limiting.

The present invention relates to a lens driving mechanism 100 and a frame assembly thereof, which are structurally stable and can prevent lens shake, and a lens driving mechanism 100 and a frame assembly thereof according to an embodiment of the present invention are described in detail below with reference to the accompanying drawings.

Fig. 1 is an exploded view of a lens driving mechanism 100 according to an embodiment of the present invention, and as shown in fig. 1, the lens driving mechanism 100 includes a frame 1, a movable bracket 2, an external circuit board 7, an internal circuit board 8, four elastic members 3, a base 6, a housing 5, and a driving motor 4. Wherein, base 6 is rectangular plate and is equipped with four joint portions all around. The shell 5 is a rectangular shell 41 with an opening at the bottom, and the shell 5 is clamped at four clamping parts of the base 6 to form a containing space to contain the frame 1, the movable support 2 and the driving motor 4, so that foreign matters are prevented from entering the driving motor 4 to influence shooting.

The frame 1 is installed in the accommodation space formed by the base 6 and the shell 5, and the frame 1 and the base 6 can be fixedly connected by clamping, bonding, threaded connection or other modes. The frame 1 is rectangular and ring-shaped as shown in fig. 2, and includes a bottom plate 12 and four side plates 11. The bottom plate 12 is a rectangular plate and is provided with rectangular hollow holes, and the bottom plate 12 is accommodated in four clamping parts of the base 6. The four side plates 11 are connected end to form a side frame, and the side frame is connected with the inner wall of the central hole of the bottom plate 12, i.e. the four side plates 11 respectively extend upwards from the side wall of the central hole and form an annular side frame.

Four side edges of the bottom plate 12 are provided with respective escape grooves 13, and as shown in fig. 6, the four escape grooves 13 extend from the bottom surface to the top surface of the bottom plate 12, and the four escape grooves 13 are used for escaping the internal circuit board 8. Specifically, as shown in fig. 4, the internal circuit board 8 includes an annular plate 81, four side circuit boards 82, and four sets of coils 83, and the annular plate 81 is located on the bottom surface of the bottom plate 12, i.e., between the bottom plate 12 and the base 6. The four side circuit boards 82 are arranged at intervals along the annular plate 81, the bottom ends of the four side circuit boards are respectively electrically connected with the annular plate 81, and the top ends of the four side circuit boards respectively penetrate through the four avoidance grooves 13 to extend toward the top. Four side circuit boards 82 are connected to the four side boards 11, respectively. Four sets of coils 83 are connected to the inner surfaces of the four side circuit boards 82, respectively. The four side plates 11 are respectively provided with accommodating grooves 14, and the four accommodating grooves 14 are respectively communicated with the four avoiding grooves 13. Four side circuit boards 82 and four sets of coils 83 are respectively located in the accommodation groove 14.

The movable bracket 2 is also rectangular ring-shaped, as shown in fig. 2, and can be movably arranged in the ring of the frame 1, and the movable bracket 2, the frame 1 and the elastic piece 3 are assembled to form a frame assembly. Four groups of magnets 24 are respectively arranged on the four side parts of the movable support 2, and the four groups of magnets 24 are respectively matched with four groups of coils 83 to drive the movable support 2 to move in the frame 1. The driving motor 4 is arranged in the movable support 2, and the driving motor 4 can be driven to move when the movable support 2 moves so as to adapt to shooting requirements and prevent the shaking phenomenon of the lens.

In one embodiment, when a single coil 83 is energized, the coil 83 may cooperate with the oppositely disposed magnets 24 to drive one side of the movable support 2 to move upward or downward. Or, when opposite currents are input to the two sets of coils 83 arranged oppositely, the two sets of coils 83 are respectively matched with the two sets of magnets 24 arranged oppositely to the two sets of coils 83, and one side of the movable support 2 can be driven to ascend and the other side of the movable support can be driven to descend, so that swinging motion is performed. Or, two sets of coils 83 adjacently arranged input current simultaneously, and the other two sets of coils 83 input opposite current or are in power-off arrangement, so that one corner of the movable support 2 can be driven to ascend, the other corner opposite to the corner descends, and then the movable support 2 can perform different swinging actions. Through the cooperation of four coils 83 and four magnet 24, can make movable support 2 sways according to the multi-angle of demand for prevent the camera lens shake. It should be understood that the number of coils 83 and magnets 24 is not limited as long as the movable bracket 2 can be driven to move and the anti-shake requirement can be satisfied.

The four corners of the frame 1 are respectively provided with mounting grooves 15, as shown in fig. 5 and 6, which mounting grooves 15 are used for mounting the elastic members 3. Specifically, the mounting groove 15 includes a first groove body 151 and a second groove body 152, the first groove body 151 is recessed from the inner surface of the frame 1 toward the outside, and the first groove body 151 gradually increases in axial depth of the lens from the inner surface to the outer surface of the frame 1. The second groove 152 is formed by recessing both sidewalls of the first groove 151 toward the inside, i.e., the second groove 152 is composed of two parts and is close to the outer surface of the frame 1. The second groove 152 extends in the axial direction to a depth smaller than that of the first groove 151. The top wall of the second groove 152 is a first mounting position for connecting the elastic member 3, and the first mounting position is provided with two first mounting posts, and the two first mounting posts are respectively located at two parts of the second groove 152.

The four elastic members 3 have the same shape and the same elasticity. The four elastic members 3 each comprise an inner end 32, an elastic wire and an outer end 31. The elastic wire has elasticity, and an inner end 32 and an outer end 31 are connected to both ends of the elastic wire, respectively. The four elastic pieces 3 are respectively located at four corners of the frame 1, the outer end 31 of each elastic piece 3 is provided with two first connecting holes 311, and the inner end 32 is provided with two second mounting holes. The two first connecting holes 311 of each elastic member 3 can be respectively sleeved in the two first mounting posts of each first mounting position, and the outer ends 31 of the elastic members 3 are connected to the second groove 152 in a matched manner through the first connecting holes 311 and the first mounting posts.

The inner end of the elastic piece 3 is connected with the movable bracket 2. Specifically, the movable bracket 2 is installed in the frame 1, and the bottom surface of the movable bracket 2 is substantially flush with the bottom surface of the frame 1. The four corners of the movable bracket 2 are respectively provided with a groove 21, the grooves 21 are formed by recessing the outer surface of the movable bracket 2 towards the inside, and the depth of the grooves 21 along the axial direction is basically equal to or larger than the depth of the first groove body 151 along the axial direction on the inner surface and larger than the depth of the second groove body 152 along the axial direction. The top wall of the groove 21 is a second installation position connected with the elastic piece 3, and the second installation position deviates towards the top relative to the first installation position, namely, the axial depth of the groove 21 where the second installation position is located is greater than that of the second groove 152 where the first installation position is located. The second mounting position is provided with two second mounting posts which are respectively positioned in two second mounting holes of the elastic piece 3.

It will be appreciated that the outer end 31 and the inner end 32 of the spring 3 are not in one plane, and that the outer end 31 of the spring 3 is connected to a first mounting location and the inner end 32 is connected to a second mounting location, the first mounting location being axially closer to the bottom surface of the frame 1 than the second mounting location, so that the outer end 31 of the spring 3 is closer to the bottom surface of the frame 1 and the inner end 32 is offset towards the top with respect to the inner end 32, as shown in fig. 3 and 7.

In practice, the outer ends 31 of the four elastic members 3 are respectively arranged at the first mounting positions of the four corners of the frame 1, and the inner ends 32 are respectively connected with the second mounting positions of the movable bracket 2. The movable support 2 can swing or axially move on the frame 1 to adjust the focal length or prevent shake. The movable bracket 2 is lifted on one side and lowered on the other side, the lifted side stretches the two elastic members 3 at the bottom thereof, and the lowered side compresses the elastic members 3 at the bottom thereof. The two stretched elastic pieces 3 pull the ascending side of the movable support 2 to descend, and the two compressed elastic pieces 3 push the descending side to ascend, so that the movable support 2 is pushed to reset. Since the outer ends 31 of the elastic supports are closer to the bottom of the frame 1, the four elastic members 3 have forces for pulling the movable support 2 to move toward the bottom, respectively, and the pulling force of the elastic members 3 on the movable support 2 is increased. And the four elastic pieces 3 have the same shape and consistent elasticity, and can uniformly apply force to the movable support 2, so that the movable support 2 moves stably and resets stably.

It should be understood that the number of the elastic members 3 is at least two, the outer ends 31 of the two elastic members 3 are connected to diagonally or oppositely disposed side portions of the frame 1, and the inner ends 32 are connected to diagonally or oppositely disposed side portions of the movable support 2, so long as the two elastic members 3 are symmetrically disposed along the optical axis, after the movable support 2 moves, that is, the two elastic members 3 provide opposite pulling forces or pushing forces to the movable support 2, the movable support 2 can be stably reset. Three or more elastic members 3 may be provided, the plurality of elastic members 3 are arranged at regular intervals around the optical axis, the outer end 31 of each elastic member 3 is connected with the first mounting position of the frame 1, and the inner end 32 is connected with the second mounting position of the movable bracket 2, without limiting the number of the elastic members 3.

Alternatively, the bottom surface of the movable bracket 2 is substantially flush with the bottom surface of the frame 1, and the bottom surface of the movable bracket 2 is provided with a groove 21, which groove 21 is located at a corner or a side of the movable bracket 2 and is formed by recessing the outer surface of the movable bracket 2 toward the inside. The outer end 31 of the elastic member 3 is connected to the bottom surface of the frame 1 and the inner end 32 is connected to the top wall of the recess 21. I.e. the first mounting position is located at the bottom surface of the frame 1, the second mounting position is located at the top wall of the groove 21, and the top wall of the groove 21 deviates towards the top with respect to the bottom surface of the frame 1, so that the outer end 31 of the elastic member 3 is closer to the bottom, and the inner end 32 is closer to the top, i.e. the elastic member 3 is in an inclined state as a whole.

As another alternative, the bottom surface of the movable bracket 2 is provided with four grooves 21, the four grooves 21 are respectively located at four corners of the movable bracket 2, and the grooves 21 are recessed from the outer surface of the movable frame 1 toward the inside. The second mounting location is the top wall of the recess 21. The bottom surface of the frame 1 is provided with four mounting grooves 15, and the four mounting grooves 15 are respectively located at four corners of the frame 1 and are formed recessed from the inner surface of the frame 1 toward the outside. The four mounting grooves 15 are aligned with the four grooves 21 in the radial direction, and the depth of the mounting grooves 15 in the axial direction is smaller than the depth of the grooves 21 in the axial direction. The second mounting position is located on the top wall of the mounting groove 15 and is located at a position close to the outside of the frame 1, the outer end 31 of the elastic member 3 is connected with the top wall of the mounting groove 15, the inner end 32 is connected with the top wall of the groove 21, and the inner end 32 of the elastic member 3 deviates toward the top relative to the inner end 32 and is in an inclined state as a whole.

Further, the depth of the mounting groove 15 in the axial direction gradually increases from the inner surface to the outer surface of the frame 1, that is, the inner end 32 of the mounting groove 15 is disposed opposite to the groove 21, and the depth of the inner end 32 of the mounting groove 15 in the axial direction is substantially the same as or smaller than the depth of the groove 21, or slightly larger than the depth of the groove 21 in the axial direction. The depth of the outer end 31 of the mounting groove 15 in the axial direction is smaller than the depth of the recess 21 in the axial direction, and the first mounting position is located at the top wall of the outer end 31 of the mounting groove 15 and the second mounting position is located at the top wall of the recess 21. The outer end 31 of the elastic piece 3 is connected with the first installation position, the inner end 32 is connected with the second installation position, and the whole body is obliquely arranged.

It should be understood that the connection manner of the outer end 31 and the first mounting position and the connection manner of the inner end 32 and the second mounting position of the elastic member 3 are not limited, and the connection hole and the connection post described above may be used, or a threaded bolt or a welding manner may be used.

In order to limit the amplitude of rotation of the movable support 2 in the frame 1 around the optical axis of the lens, the inner wall of the frame 1 is provided with two limit grooves 17. Two limit grooves 17 are respectively located at two opposite corners of the frame 1, and each limit groove 17 extends from the top surface of the frame 1 towards the bottom surface and is communicated with the mounting groove 15. The outer surface of the movable support 2 is provided with two limiting protrusions 23, and the two limiting protrusions 23 are positioned at opposite angles of the movable support 2 and are respectively positioned in the two limiting grooves 17. The size of the limiting bulge 23 along the circumferential direction is smaller than that of the limiting groove 17 along the circumferential direction, and the limiting bulge 23 can rotate or move up and down in the limiting groove 17 to a certain extent, so that the requirements of anti-shake and focal length adjustment of the movable support 2 are not affected.

It will be appreciated that the inner wall of the frame 1 may also be provided with only one limit groove 17, as shown in fig. 4, which limit groove 17 may be located at any one of the corners of the frame 1. The outside of the movable bracket 2 can be provided with only one limiting protrusion 23, and the limiting protrusion 23 is positioned in the limiting groove 17 and can limit the rotating amplitude of the movable bracket 2. Optionally, the four corners of the frame 1 may be provided with limiting grooves 17 respectively, the outer surface of the movable support 2 is provided with four limiting protrusions 23 respectively located in the four limiting grooves 17, and the four limiting protrusions 23 may move in the four limiting grooves 17 respectively, so that the movable support 2 is not affected to realize focusing or anti-shake functions.

The driving motor 4 is installed in the ring of the movable bracket 2 and includes a housing 41, a carrier 42, a seat 43, an upper reed 44 and a lower reed 45. As shown in fig. 8, the housing 41 and the base 43 are connected to each other to form a housing space, and a separate magnet 411 is provided in the housing 41. The carrier 42 is used for mounting a lens, a coil is wound outside the carrier 42, and the coil of the carrier 42 is matched with the magnet 411 on the shell 41 after being electrified to drive the carrier 42 to move along the optical axis direction of the lens, so that the focal length of the lens is adjusted. The upper reed 44 is connected to the inner wall of the housing 41 and the top of the carrier 42, and the lower reed 45 is connected to the bottom of the carrier 42 and the top of the housing 43. The upper reed 44 and the lower reed 45 are elastic, and the upper reed 44 and the lower reed 45 cooperate to elastically connect the carrier 42 with the housing 41 and the base 43 and drive the carrier 42 to return after the movement of the carrier 42.

The external circuit board 7 may energize the coils 83 of the carrier 42 and the coils 83 of the internal circuit board 8. Specifically, the external circuit board 7 may be connected to an external power source, the first portion 71 of the external circuit board 7 is sleeved outside the four outer boards of the frame 1, an internal circuit is disposed in the base 43, the outer surface of the base 43 is provided with an extension portion 431, the extension portion 431 extends to the outside of the frame 1 and is connected to the first portion 71 of the external circuit board 7, and the internal circuit in the base 43 is electrically connected to the first portion 71 of the external circuit board 7 through the extension portion 431. The lower reed 45 is a conductive metal sheet, and the lower reed 45 is electrically connected to the internal circuit in the housing 43 and the coil 83 of the carrier 42, that is, a current can flow from the external circuit board 7, the internal circuit in the housing 43, and the lower reed 45 to the coil 83 of the carrier 42.

The first portion 71 of the outer circuit board 7 is disposed parallel to the side plates 11 and is electrically connected to the annular plate 81 of the inner circuit board 8, thereby energizing the coils 83 on the side circuit boards 82.

The lens driving mechanism 100 of the present invention can smoothly drive the lens to focus and prevent the lens from shaking, so as to improve photographing quality.

While the preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.

These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of carrying out the invention and that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims (12)

1. A frame assembly for a lens driving mechanism including a driving motor, comprising:

the frame is annular, and a first installation position is arranged at the bottom of the frame;

the movable support is annular and is arranged in the ring of the frame, a second installation position is arranged at the bottom of the movable support, the second installation position deviates towards the top from the first installation position, and the movable support is used for installing a driving motor;

the elastic piece is elastic, the outer end of the elastic piece is connected with the first installation position, and the inner end of the elastic piece is connected with the first installation position.

2. The frame assembly according to claim 1, wherein the bottom surface of the movable bracket is flush with the bottom surface of the frame and is provided with a recess formed by an inward depression of an outer surface of the movable bracket, the second mounting location being located at a top wall of the recess.

3. The frame assembly according to claim 2, wherein the bottom surface of the frame is provided with a mounting groove formed by an inner surface of the frame recessed toward the outside, and the first mounting location is located at a top wall of the mounting groove.

4. A frame assembly according to claim 3, wherein the mounting groove has a depth in the axial direction that is less than the depth in the axial direction of the recess.

5. A frame assembly according to claim 3, wherein the movable bracket and the frame are rectangular ring-shaped, four first mounting locations are respectively located at four corners of the frame, and four second mounting locations are respectively located at four corners of the movable bracket; the outer ends of the four elastic pieces are respectively connected with the four first installation positions, and the inner ends of the four elastic pieces are respectively connected with the four second installation positions.

6. The frame assembly of claim 5, wherein the first mounting location is provided with a first connection post; the second installation position is provided with a second connecting column, the outer end of the elastic piece is provided with a first connecting hole sleeved on the first connecting column, and the inner end of the elastic piece is provided with a second connecting hole sleeved on the second connecting column.

7. The frame assembly according to claim 6, wherein the inner end of the mounting groove is disposed opposite the groove, and the depth of the inner end of the mounting groove in the axial direction is less than or equal to the depth of the groove in the axial direction, the depth of the mounting groove gradually increasing from the inner end to the outer end, the first mounting location being at the outer end of the mounting groove.

8. The frame assembly of claim 6, wherein the mounting slot comprises:

a first groove body formed by recessing an inner surface of the frame toward the outside, and having a depth in an axial direction gradually decreasing from the inner surface to an outer surface of the frame; and

the second groove body is formed by recessing two side walls of the first groove body opposite to each other and is positioned at one end far away from the inner surface of the frame, and the two first connecting columns are positioned on the second groove body;

the outer end of the elastic piece is provided with two first connecting holes sleeved on the two first connecting columns respectively, and the inner end of the elastic piece is provided with two second connecting holes sleeved on the two second connecting columns respectively.

9. The frame assembly according to claim 1, wherein the inner wall of the frame is provided with a limit groove extending from the top surface of the frame towards the bottom surface and located at the corner of the frame, the outer surface of the movable support is provided with a limit protrusion, the limit protrusion is located in the limit groove, and the size of the limit protrusion in the circumferential direction is smaller than the size of the limit groove in the circumferential direction.

10. The frame assembly according to claim 9, wherein two of the limit grooves are located at opposite corners of the frame, and two limit protrusions are located in the two limit grooves, respectively.

11. The frame assembly according to claim 5, wherein the frame comprises four side plates, the four side plates are connected end to form a ring shape, each side plate is provided with a coil, four side parts of the movable support are respectively provided with a magnet group, the magnet groups can drive the movable support to move in cooperation with the coils, and the elastic piece can operatively drive the movable support to reset.

12. A lens driving mechanism, characterized by comprising:

the frame assembly of any one of claims 1-11;

a base mounted to a bottom of the frame assembly;

the shell is wrapped outside the frame assembly and connected with the base;

the driving motor is arranged in the movable bracket;

the frame is provided with a plurality of groups of coils, the movable support is provided with a plurality of groups of magnet groups, and the plurality of groups of magnet groups are matched with the plurality of groups of coils to drive the movable support and the driving motor to move.

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