Base assembly and lens drive mechanism

Abstract

The present invention discloses a lens driving mechanism and a base assembly. The base assembly includes a base, a plurality of ball bearings, and a reed. The base includes a base body and a plurality of bosses, and the plurality of bosses are connected to the top surface of the base body. Ball bearing grooves are provided on the bosses. The plurality of ball bearings are respectively and simultaneously located in the plurality of ball bearing grooves and a plurality of grooves. The reed includes an inner ring, an outer ring, and a reed wire. The inner ring is located inside the outer ring and is connected to the anti-shake platform, and the outer ring is connected to the base body. The reed wire is elastic and is respectively connected to the inner ring and the outer ring. The reed is used to prevent the grooves on the anti-shake platform from disengaging from the ball bearings. In the present invention, by providing multiple sets of coils on the anti-shake platform, when the lens shakes, the multiple sets of coils cooperate with the multiple sets of magnets on the frame to drive the anti-shake platform to move in a direction perpendicular to the optical axis, so that the imaging chip on the anti-shake platform is aligned with the lens along the optical axis direction, preventing the image quality of the captured image from being affected due to lens shake.

Description

Technical Field

[0001] The present invention relates to the field of optical driving, and particularly relates to a base assembly and a lens driving mechanism. Background Art

[0002] With the development of technology, many current electronic devices have functions of taking photos or videos. The use of these electronic devices is becoming more and more common, and they are developing towards the design directions of convenience and thinness to provide users with more choices.

[0003] In practice, in order to adapt to taking photos in various scenarios, the lens needs to continuously focus, and it is also necessary to prevent the lens from shaking during the focusing or photo-taking process. In the prior art, a lens driving device is generally used to drive the lens to move in three-dimensional directions, that is, along the optical axis direction and two mutually perpendicular directions perpendicular to the optical axis. Among them, the movement of the lens along the optical axis direction is mainly used for focusing, and the movement of the lens along the direction perpendicular to the optical axis is used for anti-shake. The existing lens driving device generally includes a housing, a frame, a carrier, an upper spring piece, a lower spring piece, a plurality of suspension wires and a base. The housing and the base cooperate to provide an accommodation space for installing the frame and the carrier. The frame is provided with multiple groups of magnets and also has a hollow structure. The carrier is used for installing the lens and is installed in the hollow structure of the frame. The carrier is provided with a group of coils for cooperating with the magnets on the frame to drive the carrier and the lens to move along the optical axis direction. The upper spring piece connects the top of the frame and the carrier, and the lower spring piece connects the bottom of the frame and the carrier. The upper spring piece and the lower spring piece enable the frame and the carrier to be movably connected. The plurality of suspension wires connect the base and the upper spring piece and are used to transmit the current on the base to the upper spring piece. The external current can sequentially pass from the base, the suspension wires, the upper spring piece, the frame, the lower spring piece to the coils on the carrier. In addition, the base is provided with two other groups of coils, and these two groups of coils can cooperate with the magnets on the frame to drive the carrier and the lens to move in the direction perpendicular to the optical axis. When the lens shakes, that is, when the lens deviates from the imaging chip, these two groups of coils cooperate with the magnets of the frame to drive the carrier and the lens to move in the direction perpendicular to the optical axis and align the lens with the imaging chip along the optical axis direction.

[0004] It can be seen from this that the prior art needs to drive the carrier and the lens to move in the direction perpendicular to the optical axis to prevent the lens from shaking and align the lens with the imaging chip along the optical axis direction. However, due to the relatively large volume and weight of the carrier and the lens, it is difficult to accurately control the movement distance of the carrier and the lens, and a lens driving device with efficient anti-shake needs to be involved. Summary of the Invention

[0005] The object of the present invention is to provide a base assembly and a lens driving mechanism to solve the problems existing in the above prior art.

[0006] To solve the above problems, according to one aspect of the present invention, a base assembly is provided. The base assembly is applied to a lens driving mechanism, and the lens driving mechanism includes an anti-shake platform, a circuit board, a motor, and a housing. A plurality of grooves are provided at the bottom of the anti-shake platform. The circuit board is cylindrical and sleeved outside the anti-shake platform. The motor is installed in the cylinder of the circuit board. The motor includes a carrier, a frame, and a housing. The frame has a central hole and is installed in the housing. The carrier is movably installed in the central hole of the frame. The carrier is used to install a lens. The base assembly includes:

[0007] A base, the base includes a base body and at least three bosses, and at least three of the bosses are spaced apart and connected to the top surface of the base body. Ball grooves are provided on the bosses, and a plurality of the ball grooves are respectively arranged opposite to a plurality of the grooves along the optical axis direction. The base body is used to cooperate with the housing to form an accommodation space for accommodating the motor and the anti-shake platform;

[0008] A plurality of balls, a plurality of the balls are respectively located in a plurality of the ball grooves and a plurality of the grooves at the same time. The plurality of ball grooves and the plurality of grooves respectively cooperate with a plurality of balls to enable the anti-shake platform to be slidably connected to the base;

[0009] A reed, the reed includes an inner ring, an outer ring, and reed wires. The inner ring is located inside the outer ring and is connected to the anti-shake platform. The outer ring is connected to the base body. The reed wires are elastic and are respectively connected to the inner ring and the outer ring. The reed is used to limit the grooves of the anti-shake platform from disengaging from the balls.

[0010] In one embodiment, the base body is rectangular, the number of the bosses is four, and they are respectively located at the four corners of the base body;

[0011] A reed mounting position is provided on the base body, and the reed mounting position is located in the area surrounded by the four bosses.

[0012] In one embodiment, the reed further includes a first connecting member. One end of the first connecting member is connected to the inner circumference of the outer ring, and the other end is bent towards the base body along the optical axis direction and connected to the reed wire;

[0013] The reed mounting position includes:

[0014] A first part, the first part is annular and is located in the area of the base body surrounded by the four bosses;

[0015] A second part, the second part is formed by recessing from the top surface of the base along the inner circumference of the first part. The second part is used to place the reed wire and the inner ring.

[0016] In one embodiment, the shape of the first part matches the shape of the outer ring.

[0017] In one embodiment, the depth of the second part is greater than or equal to the thickness of the inner ring.

[0018] In one embodiment, the height of the boss is greater than or equal to the thickness of the outer ring.

[0019] In one embodiment, the outer ring is provided with a plurality of connecting holes, and the first part is provided with a plurality of columns matching the connecting holes.

[0020] In one embodiment, the base further includes a support plate, and the support plate is connected to the outer periphery of the base body and extends outward from the outer periphery of the base body.

[0021] In one embodiment, the base further includes a limiting frame, and the limiting frame is connected to the top surface of the base body and extends beyond the top surfaces of the plurality of bosses along the optical axis direction, and the inner periphery of the limiting frame abuts against the outside of the bosses, and a notch is provided on the frame, and the notch corresponds to the support plate;

[0022] The top surface of the boss is provided with a limiting groove, and the limiting groove is located on the outside of the boss.

[0023] In one embodiment, the base is provided with a hollow portion, and the hollow portion is located in the second part.

[0024] The present invention also relates to a lens driving mechanism, and the lens driving mechanism includes:

[0025] The above-mentioned base assembly;

[0026] A housing, and the housing and the base cooperate to form an accommodation space;

[0027] A circuit board, the circuit board is cylindrical, the circuit board is located in the accommodation space, and the bottom of the circuit board is connected to the top surface of the base.

[0028] An anti-shake platform, the anti-shake platform is electrically connected to the circuit board and is located inside the circuit board, an imaging chip and a plurality of groups of coils are provided on the anti-shake platform, a plurality of grooves are provided at the bottom of the anti-shake platform, and the grooves cooperate with the ball bearings and the ball bearing grooves of the base to enable the anti-shake platform to be slidably connected to the top surface of the base, and the bottom surface of the anti-shake platform is connected to the inner ring;

[0029] A motor, which is movably mounted in a cylinder of the circuit board. The motor includes a carrier, a frame, and a housing. The housing is connected to the top surface of the base. The frame is provided with multiple groups of magnets and is mounted in the housing. The anti-shake platform is movably mounted in the housing and is located between the frame and the base. Multiple groups of the magnets cooperate with multiple groups of coils on the anti-shake platform to drive the anti-shake platform to move in the direction perpendicular to the optical axis. The frame has a central hole, and the carrier is movably mounted in the central hole of the frame. The carrier is used to mount a lens.

[0030] In the present invention, by providing multiple groups of coils on the anti-shake platform, when the lens shakes, multiple groups of coils cooperate with multiple groups of magnets on the frame to drive the anti-shake platform to move in the direction perpendicular to the optical axis, so that the imaging chip on the anti-shake platform is aligned with the lens along the optical axis direction, preventing the image quality of the captured image from being affected due to lens shake. In addition, the anti-shake platform is slidably connected to the base, and the base can provide support for the anti-shake platform to move in the direction perpendicular to the optical axis, ensuring the stability of the anti-shake platform moving in the direction perpendicular to the optical axis. The reed elastically connects the anti-shake platform and the base, which can prevent the groove at the bottom of the anti-shake platform from disengaging from the ball during the movement of the anti-shake platform. Description of the Drawings

[0031] Figure 1 is an exploded view of the lens driving mechanism according to an embodiment of the present invention.

[0032] Figure 2 is Figure 1 a perspective view of the base assembly in the illustrated embodiment.

[0033] Figure 3 is Figure 1 a perspective view of the base in the illustrated embodiment.

[0034] Figure 4 is Figure 1 a perspective view of the reed in the illustrated embodiment.

[0035] Figure 5 is Figure 1 a perspective view of the assembled base assembly, circuit board, and flexible circuit board in the illustrated embodiment.

[0036] Reference Numerals: 100, lens driving mechanism; 1, base; 11, base body; 12, boss; 13, ball groove; 14, reed placement position; 141, first part; 142, second part; 15, column; 16, support plate; 17, limit border; 171, notch; 18, limit groove; 19, hollow part; 2, ball; 3, reed; 31, outer ring; 311, connection hole; 32, reed wire; 33, inner ring; 4, outer shell; 5, circuit board; 6, anti-shake platform; 61, imaging chip; 62, coil; 7, motor. Detailed Embodiments

[0037] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so as to more clearly understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not limitations on the scope of the present invention, but only to illustrate the essential spirit of the technical solution of the present invention.

[0038] In the following description, for the purpose of explaining various disclosed embodiments, certain specific details are set forth to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other instances, well-known devices, structures, and techniques associated with the present application may not be shown or described in detail so as not to unnecessarily obscure the description of the embodiments.

[0039] References to "an embodiment" or "one embodiment" in the course of the specification mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in an embodiment" or "in one embodiment" in various places throughout the specification are not necessarily all referring to the same embodiment. Additionally, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0040] In the following description, in order to clearly show the structure and working mode of the present invention, many directional terms will be used for description. However, words such as "front", "rear", "left", "right", "outer", "inner", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as limiting terms.

[0041] The present invention relates to a lens driving mechanism 100, such as Figure 1 , Figure 2 and Figure 3As shown, the lens driving mechanism 100 includes a housing 4, a base 1 assembly, a circuit board 5, an anti-shake platform 6, and a motor 7. The base 1 assembly includes a base 1, a reed 3, and a plurality of balls 2. The top surface of the base 1 is provided with a plurality of ball grooves 13, and the plurality of balls 2 are respectively movably installed in the plurality of ball grooves 13. The top surface of the base 1 and the housing 4 cooperate to form a receiving space for receiving the motor 7, the circuit board 5, and the anti-shake platform 6. The circuit board 5 is cylindrical and is installed in the receiving space formed by the housing 4 and the base 1. The bottom of the circuit board 5 is connected to the top surface of the base 1. The anti-shake platform 6 is electrically connected to the circuit board 5 and is movably installed in the circuit board 5. Moreover, an imaging chip 61 and multiple sets of coils 62 are provided on the anti-shake platform 6. The imaging chip 61 needs to be aligned with the lens in the motor 7 to receive the light irradiated into the lens through the photosensitive element and image the light. In addition, a plurality of grooves are provided at the bottom of the anti-shake platform 6 for receiving the plurality of balls 2, that is, the plurality of balls 2 are respectively located in the plurality of grooves and the plurality of ball grooves 13. The anti-shake platform 6 can be slidably connected to the top surface of the base 1 through the cooperation of the plurality of grooves, the plurality of balls 2, and the plurality of ball grooves 13. Additionally, the bottom surface of the anti-shake platform 6 is also connected to the reed 3, and the reed 3 can prevent the grooves on the anti-shake platform 6 from disengaging from the balls 2 during the sliding process. The motor 7 is movably installed in the circuit board 5. The motor 7 includes a carrier, a frame, and a housing. The housing is connected to the top surface of the base 1. Multiple sets of magnets are provided on the frame and are installed in the housing. The anti-shake platform 6 is movably installed in the housing and is located between the frame and the base 1. The multiple sets of magnets cooperate with the multiple sets of coils 62 on the anti-shake platform 6 to drive the anti-shake platform 6 to move in the direction perpendicular to the optical axis. The frame has a central hole, and the carrier is movably installed in the central hole of the frame. The carrier is used to install the lens.

[0042] In the present invention, by providing multiple sets of coils 62 on the anti-shake platform 6, when the lens shakes, the multiple sets of coils 62 cooperate with the multiple sets of magnets on the frame to drive the anti-shake platform 6 to move in the direction perpendicular to the optical axis, so that the imaging chip 61 on the anti-shake platform 6 is aligned with the lens in the optical axis direction, preventing the image quality of the captured image from being affected due to lens shake. In addition, the anti-shake platform 6 can be slidably connected to the base 1, and the base 1 can provide support for the anti-shake platform 6 to move in the direction perpendicular to the optical axis, ensuring the stability of the anti-shake platform 6 moving in the direction perpendicular to the optical axis. The reed 3 elastically connects the anti-shake platform 6 and the base 1, which can prevent the grooves at the bottom of the anti-shake platform 6 from disengaging from the balls 2 during the movement of the anti-shake platform 6. By driving the imaging chip 61 to move in the direction perpendicular to the optical axis through the movement of the anti-shake platform 6, it is easier to achieve precise anti-shake.

[0043] It should be noted that, in Figure 1 the illustrated embodiment, the multiple sets of coils 62 are provided on another rectangular circuit board 5 and can be connected to the top surface of the anti-shake platform 6 through the rectangular circuit board 5. In other embodiments, the multiple sets of coils 62 can also be directly provided on the anti-shake platform 6.

[0044] Figure 2 is Figure 1 The perspective view of the base 1 assembly shown Figure 3 is Figure 1 The perspective view of the base 1 of the illustrated embodiment Figure 4 is Figure 1 The perspective view of the reed 3 of the illustrated embodiment, as Figure 1 、 Figure 2 and Figure 3 shown. The base 1 includes a base body 11 and a plurality of bosses 12. The plurality of bosses 12 are spaced apart and connected to the top surface of the base body 11. It should be understood that the number of bosses 12 is at least three so as to stably support the anti-shake platform 6 to move in a direction perpendicular to the optical axis. A plurality of ball grooves 13 on the plurality of bosses 12 are respectively arranged opposite to a plurality of grooves in the optical axis direction. A plurality of balls 2 are respectively located in the plurality of grooves and the plurality of ball grooves 13, and the anti-shake platform 6 is slidably connected to the base 1. The reed 3 includes an inner ring 33, an outer ring 31 and reed wires 32. Among them, the outer ring 31 is used to connect the base body 11, and the inner ring 33 is located inside the outer ring 31 and connected to the bottom surface of the anti-shake platform 6. The reed wires 32 are elastic and respectively connect the inner ring 33 and the outer ring 31. When the anti-shake platform 6 slides in a direction perpendicular to the optical axis, the reed 3 can prevent the grooves at the bottom of the anti-shake platform 6 from disengaging from the balls 2, so that the anti-shake platform 6 is stably slidably connected to the base 1.

[0045] Optionally, as Figure 2 and Figure 3 shown, the base body 11 is rectangular, the number of bosses 12 is four, and they are respectively located at the four corners of the base body 11. A reed mounting position 14 is provided on the base body 11. The reed mounting position 14 is used to connect the reed 3, and the reed mounting position 14 is located in the area surrounded by the plurality of bosses 12. It should be understood that the bosses 12 can also be arranged at other positions of the base body 11, and the reed mounting position 14 can also be located at the edge of the base body 11, not limited to the position in the illustrated embodiment of Figure 2 shown. The number of bosses 12 can also be more, as long as the ball grooves 13 on the bosses 12 can match the grooves of the anti-shake platform 6. The shape of the bosses 12 is not limited, as long as the top of the bosses 12 has enough area to open the ball grooves 13.

[0046] Optionally, the reed 3 further includes a first connecting member, as shown in Figure 3 and Figure 4 shown. One end of the first connecting member is connected to the inner circumference of the outer ring 31, and the other end is bent towards the base body 11 in the optical axis direction and connected to the reed wire 32. And the reed mounting position 14 includes a first part 141 and a second part 142, as Figure 2 and 3As shown in the figure, the first part 141 is located in the top surface area of the base body 11 surrounded by a plurality of bosses 12, and the first part 141 is annular for installing the outer ring 31 of the reed 3. The second part 142 is located inside the first part 141 and is recessed from the top surface of the base 1 along the inner circumference of the first part 141. The second part 142 is used for placing the reed wire 32 and the inner ring 33. The second part 142 is formed by recessing the top surface of the base body 11, and the inner ring 33 and the reed wire 32 of the reed 3 also bend towards the base 1. The inner ring 33 and the reed wire 32 can be installed in the second part 142, and the inner ring 33 is fixedly connected to the second part 142. Since the distance between the second part 142 and the anti-shake platform 6 is greater than the distance between the top surface of the boss 12 and the anti-shake platform 6, the reed wire 32 can generate a greater elastic force on the inner ring 33 and the anti-shake platform 6, so that the anti-shake platform 6 approaches the base 1, preventing the depression at the bottom of the anti-shake platform 6 from separating from the ball 2 during the movement of the anti-shake platform 6. In addition, after the anti-shake platform 6 moves, the cooperation of the reed 3 and the circuit board 5 can also reset the anti-shake platform 6.

[0047] Optionally, the shape of the first part 141 matches the shape of the outer ring 31. The first part 141 is used to connect the outer ring 31. In Figure 2 、 Figure 3 and Figure 4 In the embodiments, both the first part 141 and the outer ring 31 are octagonal rings. It should be understood that the second part 142 and the outer ring 31 can also be designed in other shapes, such as a circular ring or a plurality of strips, and the shapes of the first part 141 and the outer ring 31 are not limited. In addition, the shape of the first part 141 can also be inconsistent with the shape of the outer ring 31, and the size of the first part 141 needs to be greater than or equal to the size of the outer ring 31 to facilitate connecting the outer ring 31.

[0048] Optionally, the depth of the second part 142 is greater than or equal to the thickness of the inner ring 33. The second part 142 is used for installing the inner ring 33 and the reed wire 32. The depth of the second part 142 affects the elastic force of the reed wire 32 on the anti-shake platform 6, and thus the stability of the movement of the anti-shake platform 6. The depth of the second part 142 can be determined according to the elastic force of the reed wire 32. If the reed wire 32 has a sufficiently large elastic force, the depth of the second part 142 can also be appropriately reduced, or the second part 142 can be flush with the base body 11.

[0049] Optionally, the height of the boss 12 is greater than or equal to the thickness of the outer ring 31. The boss 12 is used to support the anti-shake platform 6 to move in a direction perpendicular to the optical axis. The height of the boss 12 being greater than the thickness of the outer ring 31 can ensure that the top of the reed 3 does not protrude above the top surface of the boss 12, and when the anti-shake platform 6 moves in a direction perpendicular to the optical axis, it can prevent the reed 3 from interfering with or blocking the movement of the anti-shake platform 6.

[0050] Optionally, as in Figure 2 、Figure 3 and Figure 4 As shown in Figure 4 , the outer ring 31 is provided with a plurality of connecting holes 311, and the first part 141 is provided with a plurality of columns 15 that match the connecting holes 311. The outer ring 31 can be connected to the plurality of columns 15 through the connecting holes 311.

[0051] Optionally, the base 1 further includes a support plate 16. The support plate 16 is connected to the outer periphery of the base body 11 and extends outward from the outer periphery of the base body 11. The frame is also provided with an extension part, and a metal sheet is further provided inside the frame. Both ends of the metal sheet are located on the extension part, and the connection ends of the circuit board 5 are located outside. Both ends of the metal sheet can be connected to the connection ends of the circuit board 5, and the circuit board 5 supplies power to it. The support plate 16 is used to support the connection end of the extension part close to the circuit board 5, facilitating the electrical connection between both ends of the metal sheet and the connection ends of the circuit board 5.

[0052] Optionally, a limiting border 17 is further provided on the top surface of the base body 11. The limiting border 17 extends beyond the top surface of the plurality of bosses 12 along the optical axis direction, and the inner periphery of the limiting border 17 abuts against the outside of the bosses 12. A limiting groove 18 is provided on the top surface of the bosses 12, and the limiting groove 18 extends along the outside of the bosses 12. The housing of the motor 7 can be installed within the limiting border 17 and is located outside the plurality of bosses 12, that is, fixed by the outside of the bosses 12 and the limiting border 17. Additionally, the housing of the motor 7 can also be installed within the limiting border 17, and the four corners of the housing are located within the limiting grooves 18 of the four bosses 12. A notch 171 is provided on the border, and the notch 171 corresponds to the support plate 16. The notch 171 is used for, for example, the extension part of the frame, facilitating the extension part to extend out of the base body 11 from the notch 171.

[0053] Optionally, the base 1 is provided with a hollow part 19. The hollow part 19 is located in the second part 142, and the hollow part 19 allows other external lines to pass through.

[0054] In the present invention, by providing multiple sets of coils 62 on the anti - shake platform 6, when the lens shakes, the multiple sets of coils 62 cooperate with the multiple sets of magnets on the frame to drive the anti - shake platform 6 to move in a direction perpendicular to the optical axis, so that the imaging chip 61 on the anti - shake platform 6 is aligned with the lens along the optical axis direction, preventing the deterioration of the image quality of the captured image due to lens shake. Additionally, the anti - shake platform 6 is slidably connected to the base 1, and the base 1 can provide support for the anti - shake platform 6 to move in a direction perpendicular to the optical axis, ensuring the stability of the movement of the anti - shake platform 6 in a direction perpendicular to the optical axis. The reed 3 elastically connects the anti - shake platform 6 and the base 1, which can prevent the groove at the bottom of the anti - shake platform 6 from detaching from the ball 2 during the movement of the anti - shake platform 6.

[0055] The preferred embodiments of the present invention have been described in detail above. However, it should be understood that after reading the above teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention. These equivalent forms also fall within the scope defined by the appended claims of this application.

Claims

1. A lens driving mechanism, characterized in that, it includes: A base assembly, the base assembly includes: A base, the base includes a base body and at least three bosses, and the at least three bosses are spaced apart and connected to the top surface of the base body, and ball grooves are provided on the bosses, and a plurality of ball grooves are respectively arranged opposite to a plurality of grooves along the optical axis direction, and the base body is used to cooperate with the housing to form an accommodation space for accommodating a motor and an anti-shake platform; A plurality of balls, the plurality of balls are respectively located in a plurality of ball grooves and a plurality of grooves at the same time, and the plurality of ball grooves and the plurality of grooves respectively cooperate with the plurality of balls to enable the anti-shake platform to be slidably connected to the base; A reed, the reed includes an inner ring, an outer ring and a reed wire, the inner ring is located inside the outer ring and connected to the anti-shake platform, the outer ring is connected to the base body, the reed wire is elastic and connected to the inner ring and the outer ring respectively, and the reed is used to limit the groove of the anti-shake platform from disengaging from the ball; A housing, the housing and the base cooperate to form an accommodation space; A circuit board, the circuit board is cylindrical, the circuit board is located in the accommodation space, and the bottom of the circuit board is connected to the top surface of the base; An anti-shake platform, the anti-shake platform is electrically connected to the circuit board and located inside the circuit board, an imaging chip and multiple groups of coils are provided on the anti-shake platform, a plurality of grooves are provided at the bottom of the anti-shake platform, and the grooves cooperate with the balls and the ball grooves of the base to enable the anti-shake platform to be slidably connected to the top surface of the base, and the bottom surface of the anti-shake platform is connected to the inner ring; A motor, the motor is movably installed in the cylinder of the circuit board, the motor includes a carrier, a frame and a housing, the housing is connected to the top surface of the base, multiple groups of magnets are provided on the frame and installed in the housing, the anti-shake platform is movably installed in the housing and located between the frame and the base, and the multiple groups of magnets cooperate with the multiple groups of coils on the anti-shake platform to drive the anti-shake platform to move in the direction perpendicular to the optical axis; the frame has a central hole, the carrier is movably installed in the central hole of the frame, and the carrier is used to install a lens; the base body is rectangular, the number of the bosses is four, and they are respectively located at the four corners of the base body; A reed mounting position is provided on the base body, and the reed mounting position is located in the area surrounded by the four bosses; the reed further includes a first connecting member, one end of the first connecting member is connected to the inner circumference of the outer ring, and the other end is bent towards the base body along the optical axis direction and connected to the reed wire; The reed mounting position includes: A first part, the first part is annular and located in the area of the base body surrounded by the four bosses; A second part, the second part is recessed from the top surface of the base along the inner circumference of the first part, and the second part is used to place the reed wire and the inner ring; the shape of the first part matches the shape of the outer ring; the depth of the second part is greater than or equal to the thickness of the inner ring.

2. The lens driving mechanism according to claim 1, characterized in that, the height of the boss is greater than or equal to the thickness of the outer ring.

3. The lens driving mechanism according to claim 1, characterized in that, the outer ring is provided with a plurality of connection holes, and the first part is provided with a plurality of columns matching the connection holes.

4. The lens driving mechanism according to claim 3, characterized in that, The base further includes a support plate, and the support plate is connected to the outer periphery of the base body and extends outward from the outer periphery of the base body.

5. The lens driving mechanism according to claim 4, wherein, the base further includes a limiting frame, the limiting frame is connected to the top surface of the base body and extends beyond the top surfaces of the plurality of bosses along the optical axis direction, and the inner periphery of the limiting frame abuts against the outer sides of the bosses, and a notch is provided on the frame, and the notch corresponds to the support plate; A limiting groove is provided on the top surface of the boss, and the limiting groove is located on the outer side of the boss.

6. The lens driving mechanism according to claim 1, wherein, the base is provided with a hollow portion, and the hollow portion is located in the second portion.

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