Lens driving mechanism

Abstract

The present invention discloses a lens driving mechanism, which includes a frame, a carrier, an upper spring piece, a lower spring piece, a suspension wire, a magnet group, a circuit board and a base. The carrier is wound with a focusing coil, the frame has a central opening, the magnet group is installed on the frame and arranged around the central opening, the carrier is movably arranged in the central opening, the upper spring piece movably connects the upper surface of the carrier and the upper surface of the frame, the lower spring piece movably connects the lower surface of the carrier and the lower surface of the frame, the circuit board is provided with an anti-shake coil, the base is provided with a base-embedded metal sheet, the base-embedded metal sheet is electrically connected to the anti-shake coil, and the base-embedded metal sheet is electrically connected to the focusing coil through the suspension wire and the upper spring piece. The present invention connects the external circuit with the focusing coil and the anti-shake coil through the base-embedded metal sheet, simplifying the process and the circuit.

Description

Technical Field

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

[0002] With the widespread popularity of smart phones, the application scope of mobile phone cameras is getting larger and larger. However, currently, most of the sensors of mobile phone cameras are placed in the modules outside the motor. The side FPC uses a flexible circuit board, which causes problems such as warping. The sensor detection is unstable. At the same time, when the side FPC uses a flexible circuit board, uneven installation will affect the actual movement stroke. For the vertical movement part of the middle carrier, the power of the bottom FPC is transmitted to the upper spring piece through the suspension wire and then transmitted to the coil on the carrier. When the motor is impacted or after long-term operation, the reliability of the suspension wire becomes low, and problems such as breakage are likely to occur, resulting in the failure of the entire motor. In addition, a circuit board is usually provided in the base. The circuit board usually includes many layers. The external circuit and the focusing coil are connected through the circuit board and the suspension wire, etc. The structure is complex, the circuit is not concise enough, and the reliability is affected to a certain extent. Summary of the Invention

[0003] The purpose of the present invention is to provide a lens driving mechanism to solve the problems existing in the above-mentioned prior art.

[0004] To solve the above problems, according to one aspect of the present invention, a lens driving mechanism is provided. The lens driving mechanism includes a frame, a carrier, an upper spring piece, a lower spring piece, a suspension wire, a magnet group, a circuit board, and a base.

[0005] The carrier is used for installing a lens and is wound with a focusing coil. The frame has a central opening. The magnet group is installed on the frame and arranged around the central opening. The carrier is movably arranged in the central opening. The upper spring piece movably connects the upper surface of the carrier and the upper surface of the frame. The lower spring piece movably connects the lower surface of the carrier and the lower surface of the frame.

[0006] The circuit board is provided with an anti-shake coil. The base is provided with a base-embedded metal sheet. The base-embedded metal sheet is electrically connected to the anti-shake coil. The base-embedded metal sheet is electrically connected to the focusing coil through the suspension wire and the upper spring piece. The focusing coil cooperates with the magnet group to achieve the focusing function. The anti-shake coil cooperates with the magnet group to achieve the anti-shake function.

[0007] In one embodiment, the lens driving mechanism further includes a sensor. The base-embedded metal sheet is provided with a sensor installation part. The sensor is installed on the sensor installation part and is externally connected through the base-embedded metal sheet.

[0008] In one embodiment, the sensor mounting portion protrudes upward from the metal sheet embedded in the base by a certain distance, and an arc portion is provided at the place where the sensor mounting portion is connected to the metal sheet embedded in the base.

[0009] In one embodiment, the sensor includes a first sensor and a second sensor, and the first sensor and the second sensor are mounted on adjacent side portions of the metal sheet embedded in the base to detect the displacement of the frame and the carrier in a plane perpendicular to the optical axis.

[0010] In one embodiment, the base forms a rectangular plate body, a base center hole is provided in the middle of the rectangular plate body, and a plurality of positioning and pressing holes for the metal sheet embedded in the base are formed around the base center hole.

[0011] In one embodiment, a plurality of first tape cutting grooves are further provided at the edge of the base, and a plurality of second tape cutting grooves are provided around the center hole of the base.

[0012] In one embodiment, the first tape cutting groove and the second tape cutting groove include a bottom and a side wall, and an arc portion is formed on the side wall.

[0013] In one embodiment, suspension connection portions are provided at four corner portions of the metal sheet embedded in the base, and the suspension connection portions communicate with the first tape cutting grooves.

[0014] In one embodiment, a center opening of the metal sheet embedded in the base is formed inside the metal sheet embedded in the base, and a plurality of circuit board connection portions are provided around the center opening of the metal sheet embedded in the base, and the circuit board connection portions are electrically connected to the anti-shake coil on the circuit board.

[0015] In one embodiment, suspension connection portions are provided at four corner portions of the metal sheet embedded in the base, suspension connection holes are provided at four corner portions of the base, the suspension connection portions are correspondingly matched with the suspension connection holes, and the lower end of the suspension wire is connected to the suspension connection portion.

[0016] Compared with the prior art, the present invention cancels the side FPC, simplifies the structure, and at the same time connects the external circuit with the focusing coil through the metal sheet embedded in the base, and directly connects the external circuit with the anti-shake coil through the metal sheet embedded in the base, simplifies the process and the circuit, and makes the product more reliable. Description of the Drawings

[0017] Figure 1 is a three-dimensional exploded view of a lens driving mechanism according to an embodiment of the present invention;

[0018] Figure 2 is a three-dimensional view of a frame according to an embodiment of the present invention;

[0019] Figure 3 Is a perspective view of a carrier according to an embodiment of the present invention;

[0020] Figure 4A Is a perspective view of a base according to an embodiment of the present invention;

[0021] Figure 4B Is Figure 4A A partially enlarged view of , which shows in detail the sensor mounting portion;

[0022] Figure 5A Is a perspective view of a base embedded with a metal sheet according to an embodiment of the present invention;

[0023] Figure 5B Is another perspective view of a base embedded with a metal sheet according to an embodiment of the present invention;

[0024] Figure 6 Is a top view of a lens driving mechanism according to an embodiment of the present invention, where the housing has been removed;

[0025] Figure 7 Is a bottom view of a lens driving mechanism according to an embodiment of the present invention, where the housing has been removed;

[0026] Figure 8 Is a cross-sectional view of a lens driving mechanism according to an embodiment of the present invention. Detailed Description of the Embodiments

[0027] The following will describe in detail the preferred embodiments of the present invention with reference to the accompanying drawings 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.

[0028] In the following description, certain specific details are set forth in order 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.

[0029] References to "an embodiment" or "one embodiment" throughout 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" 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.

[0030] 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, terms 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 restrictive terms.

[0031] The present invention generally relates to a lens driving mechanism, including a housing, a carrier, a frame, a magnet group, a base, an upper spring piece, a lower spring piece, a suspension wire, a circuit board, and a metal sheet embedded in the base. The carrier is used to mount the lens and is wound with a focusing coil. The frame has a central opening. The magnet group is mounted on the frame and arranged around the central opening. The carrier is disposed in the central opening of the frame. The upper spring piece movably connects the upper surface of the carrier to the upper surface of the frame. The lower spring piece movably connects the lower surface of the carrier to the lower surface of the frame. The suspension wire suspends the frame and its carrier on the base. The anti-shake coil is built in the circuit board. The focusing coil on the carrier cooperates with the magnet group to drive the carrier to move along the optical axis (defined as the Z-axis) direction to achieve the focusing function. The anti-shake coil in the circuit board cooperates with the magnet group to drive the frame and the carrier to perform two-dimensional displacement movement along the X-axis and Y-axis directions to achieve the optical anti-shake function, where the X-axis, Y-axis, and Z-axis are perpendicular to each other. In the present invention, a sensor is provided on the base to detect the offset displacement of the carrier in the X-axis and Y-axis directions perpendicular to the optical axis direction, and transmit the offset displacement to the controller, so as to control the magnitude and direction of the current in the anti-shake coil, so that the lens moves in the direction opposite to the offset displacement to achieve optical anti-shake. And in the direction parallel to the optical axis (i.e., the Z-axis), no sensor is provided, but it is adjusted by the magnitude of the current in the coil, so as to control autofocus. For example, when detecting the stroke in the Z-axis direction of each product, assuming the stroke is 100, multiple different positions are set in the Z-axis stroke, and the current magnitudes corresponding to the positions are recorded and pre-set in the chip. In actual driving, only the current needs to be increased to the corresponding intensity to control the driving position and achieve the focusing function. This design reduces the number of sensors, makes the component structure simple, reduces the manufacturing and processing costs, and improves the reliability of the product.

[0032] In addition, in one embodiment, the sensor is mounted on the metal sheet embedded in the base and is directly connected to the outside for signal and circuit communication through the metal sheet embedded in the base, improving the signal transmission efficiency and reliability. In addition, through the arc design of the mounting part of the metal sheet embedded in the base, the strength of the mounting part of the metal sheet embedded in the base is further improved, and the anti-pressure when the metal sheet embedded in the base is pressed into the base is increased.

[0033] The following combines the attached Figures 1-7 A detailed description is given of the lens driving mechanism of an embodiment of the present invention.

[0034] Figure 1It is an exploded perspective view of a lens driving mechanism according to an embodiment of the present invention. As Figure 1 shown, a lens driving mechanism 100 according to an embodiment of the present invention generally includes a housing 10, an upper spring piece 20, a frame 30, a magnet group 40, a carrier 50, a lower spring piece 21, a base 60, a circuit board 61, a base-embedded metal piece 62, and a suspension wire 90. The base-embedded metal piece 62 is disposed within the base 60, and the circuit board is disposed on the surface of the base 60 facing the housing. The upper spring piece 20 movably connects the upper surface of the carrier 50 and the lower surface of the frame 30, and the lower spring piece 21 movably connects the lower surface of the carrier 50 and the lower surface of the frame 30. The magnet group 40 is fixedly installed on the inner wall of the frame 30. The suspension wire 90 suspends the frame 30 and the carrier 50 on the base 60, and the carrier 30, its upper spring piece 20, the magnet group 40, the frame 30, and the lower spring piece 21 are accommodated within the space defined by the cooperation of the housing 10 and the base 60. The carrier 50 is provided with a focusing coil, and the circuit board 61 is internally provided with an anti-shake coil. The focusing coil and the anti-shake coil cooperate with the magnet group 40 correspondingly to drive the carrier 50 to move along the mutually perpendicular Z-axis, X-axis, or Y-axis when powered on, so as to realize the focusing function and the optical anti-shake function of the lens driving mechanism.

[0035] The following will describe each component of the lens driving mechanism of the present invention in conjunction with Figures 2-8 this.

[0036] Figure 2 It is a perspective view of a frame 30 according to an embodiment of the present invention. As Figure 2 shown, the frame 30 has a central opening 31, and a magnet group 40 is disposed on three inner walls surrounding the central opening 31. Specifically, the magnet group 40 includes three magnets, and one magnet is fixedly placed on each of the three inner walls of the frame 30. A frame upper spring piece mounting portion 32 is provided on the surface of the frame 30 facing the housing (simply referred to as the upper surface). The frame upper spring piece mounting portion 32 is disposed at the four corners of the upper surface of the frame 30, and a frame upper spring piece mounting protrusion 321 is provided on each frame upper spring piece mounting portion 32. The frame upper spring piece mounting protrusion 321 cooperates with the upper spring piece outer mounting hole 21 on the outer ring of the upper spring piece 20, so as to fixedly connect the outer ring of the upper spring piece 20 and the upper surface of the frame 30. Frame suspension wire mounting grooves 33 extending along the height direction of the frame are further provided at the four corners of the frame 30 to accommodate the suspension wire 90. The lower end of the suspension wire 90 is connected to the base-embedded metal piece 62 of the base 60, then passes through the frame suspension wire mounting groove 33 and is connected to the suspension wire connecting portion of the upper spring piece 20 at the upper end, and is electrically connected to the focusing coil on the carrier 50 through the upper spring piece 20. Therefore, on the one hand, the suspension wire 90 suspends the frame 30 and the carrier 50 on the base 90, and on the other hand, it also has the function of conducting electricity and acts as a conductor between the external circuit and the focusing coil.

[0037] Figure 3Stereogram of the carrier 50 according to an embodiment of the present invention, as Figure 3 shown, a carrier center opening 54 is provided inside the carrier 50 for installing a lens. The outer diameter of the carrier center opening 54 matches the inner diameter of the center opening 31 of the frame 30, so that the carrier 50 can be movably placed inside the center opening 31 of the frame 30. The magnet group 40 surrounds three sides of the carrier 50. Coil mounting portions 52 are provided on two opposite side portions of the carrier 50. The coil mounting portions 52 protrude from the surface of the carrier 50 by a certain distance and are wound with focusing coils 53. The focusing coils 53 cooperate with two of the magnets in the magnet group 40. When the focusing coil 40 is energized, due to the electromagnetic induction effect, the carrier 50 can move along the optical axis direction, that is, the Z-axis direction, so as to realize the function of optical zoom. Carrier upper spring fixing posts 55 are provided around the carrier center opening 54. An inner ring mounting hole 22 is provided in the inner ring of the upper spring 20. By cooperating the inner ring mounting hole 22 with the carrier upper spring fixing posts 55, the inner ring of the upper spring 20 is fixed on the carrier 50.

[0038] Figure 4A Stereogram of the base 60 according to an embodiment of the present invention, Figure 4B is Figure 4A partial enlarged view of, which shows the sensor mounting portion. As Figures 4A-4B shown, the base 60 integrally forms a rectangular plate main body. A base center hole 601 is provided in the middle of the rectangular plate main body to correspond and cooperate with the inner center hole 54 of the carrier. Two opposite base first side portions 60A and two opposite base second side portions 60B are formed around the base center hole 601. A plurality of first base embedded metal sheet positioning and pressing holes 604 are provided on two opposite base first side portions 60A, and a plurality of second base embedded metal sheet positioning and pressing holes 605 are provided on the opposite base second side portions 60B. The aperture of the first base embedded metal sheet positioning and pressing hole 604 is larger, and the aperture of the second base embedded metal sheet positioning and pressing hole 605 is smaller. Through the size cooperation of the first base embedded metal sheet positioning and pressing hole 604 and the second base embedded metal sheet positioning and pressing hole 605, better processing positioning of the base embedded metal sheet 62 can be realized, which is convenient for accurately positioning and processing the base embedded metal sheet, and realizing the processing and formation of specific features on the base embedded metal sheet 62.

[0039] Continue to refer to Figure 4A , a plurality of first tape cutting grooves 606 are also provided on the base first side portion 60A. Preferably, the plurality of first tape cutting grooves 606 are arranged at both ends and the middle of the first side portion 60A. A plurality of second tape cutting grooves 607 are provided around the base center hole 601. The plurality of second tape cutting grooves 607 are preferably arranged uniformly around the base center hole 601.

[0040] Next, refer to Figure 4BTaking the first strip groove 606 as an example, the strip groove will be described in detail. The specific structure of the second strip groove 607 is similar to that of the first strip groove 606 and will not be elaborated here. As Figure 4B shown, the first strip groove 606 integrally forms a "U" - shaped groove and includes a bottom 6061 and side walls 6062. An arc - shaped portion 6063 is formed on the side walls 6062. By providing the first strip groove 606 and the second strip groove 607 and their unique structural design, laser spatter can be prevented during the laser processing of the base - embedded metal sheet 62. A plurality of base - embedded metal sheet connection - part avoidance grooves 608 are also provided around the base center hole 601 to cooperate with the base - embedded metal sheet connection parts. Preferably, the base - embedded metal sheet connection - part avoidance grooves 608 are arranged between every two second strip grooves 607.

[0041] Referring to Figure 4A , the base 60 also has a plurality of circuit - board fixing posts 602 to fix the circuit board 61 on the base 60. Suspension - wire fixing holes 603 are provided at the four corner parts of the base 60. The lower ends of the suspension wires 90 are fixed in the suspension - wire fixing holes 603. Preferably, the suspension - wire fixing holes 603 are arranged adjacent to and communicate with the first strip grooves 606 at both ends of the first side part 60A, so that the damping glue at the end of the suspension wire 60 can be accommodated in the strip groove.

[0042] Figure 5A is a perspective view of the base - embedded metal sheet 62, Figure 5B is another perspective view of the base - embedded metal sheet 62. Next, referring to Figures 5A-5B a base - embedded metal sheet 62 according to an embodiment of the present invention will be described. As Figure 5AAs shown, the base-embedded metal sheet 62 is integrally disposed inside the base 60 and electrically connected to the circuit board 61. The four corners of the base-embedded metal sheet 62 are provided with suspension wire connection portions 621, and the suspension wire connection portions 621 are correspondingly matched with the suspension wire connection holes 603 of the base 60. The lower end of the suspension wire 90 is connected to the suspension wire connection portion 621. An opening 622 of the base-embedded metal sheet is formed inside the base-embedded metal sheet 60 to cooperate with the central opening of the base. A plurality of circuit board connection portions 623 are provided around the opening 622 of the base-embedded metal sheet. The circuit board connection portions 623 are located in the circuit board connection portion avoidance grooves 603 of the base 60, and the base-embedded metal sheet 62 is electrically connected to the circuit board 61 through the circuit board connection portions 623. Both sides of the base-embedded metal sheet 62 are bent away from the housing to form a plurality of external connection ends 624, and the base-embedded metal sheet 62 is connected to an external circuit, a controller, etc. through the plurality of external connection ends 624. The suspension wire connection portion 621 is provided with a first strip 6211, and the middle of the side portion of the base-embedded metal sheet 62 is provided with a second strip 6212. The first strip 6211 and the second strip 6212 are correspondingly matched with the first strip cutting groove 606 on the base 60. The circuit board connection portion 623 is integrally formed with one of the external connection ends 624 and is provided with a third strip 6231. The third strip 6231 is correspondingly matched with the second strip cutting groove 607 on the base 60.

[0043] As Figure 5B shown, the base-embedded metal sheet 62 generally includes two opposite first side portions 62A of the base-embedded metal sheet and two opposite second side portions 62B of the base-embedded metal sheet. The second side portion 62B of the base-embedded metal sheet is provided with the above-mentioned external circuit connection portion 624. One of the first side portions 62A of the base-embedded metal sheet and one of the second side portions 62B of the base-embedded metal sheet are further provided with a first sensor mounting portion 625 and a second sensor mounting portion 626 respectively. The structures of the first sensor mounting portion 625 and the second sensor mounting portion 626 are similar. Now, the first sensor mounting portion 625 will be taken as an example for description.

[0044] Continue to refer to Figure 5B, the first sensor mounting portion 625 is integrally formed with two of the external circuit connection ends 624. Specifically, the first side portion 62A of the base-embedded metal sheet is composed of two strip-shaped metal strips. The two ends of the two metal strips are located at the second side portion 62B of the base-embedded metal sheet at two opposite positions and are bent to form two of the external circuit connection portions 624. The two metal strips are bent upward at positions near the ends of the first side portion 62A of the base-embedded metal sheet to form the first sensor mounting portion 625, and the two metal strips are disconnected at the first sensor mounting portion 625 to form the first sensor connection end 6251. An arc portion 6252 is formed at the place where the first sensor mounting portion 625 is connected to the metal strip. Since the sensor mounting portion is formed by the upward convex deformation of the metal strip, its compressive resistance is weak. During the process of pressing the base-embedded metal sheet 62 into the base 60, it is easy to break here. After a large number of modeling and experiments, the inventor unexpectedly found that setting an arc at the connection between the sensor mounting portion and the metal strip can increase the strength of the sensor mounting portion and enhance its compressive resistance.

[0045] Refer to Figures 5A-5B , the first sensor mounting portion 625 and the second sensor mounting portion 626 of the base-embedded metal sheet 62 respectively mount the first sensor 641 and the second sensor 642. The first sensor 641 and the second sensor 642 respectively cooperate with two mutually perpendicular magnets of the magnet group 40 to detect the displacement of the frame and the carrier in a plane perpendicular to the optical axis (assumed to be the Z axis) (i.e., the X axis and the Y axis). Specifically, return to refer to Figure 1 , an internal coil (not shown in the figure) is provided inside the circuit board 61. The internal coil is electrically connected to the base-embedded metal sheet 62 through the circuit board connection portion 624 on the base-embedded metal sheet 62, and cooperates with the magnet group 40 provided inside the frame 30 to drive the frame 30 and the carrier 50 to move in a plane perpendicular to the optical axis when energized. When the first sensor 641 or the second sensor 642 detects the displacement of the frame on the X axis or the Y axis, the displacement information is timely fed back to the controller. The controller controls the magnitude and direction of the current in the circuit board 61 to drive the frame and the carrier to move on the X axis or the Y axis in a direction opposite to the detected displacement direction, thereby realizing the optical image stabilization function.

[0046] Figure 6 is a top view of the lens driving mechanism according to an embodiment of the present invention, where the housing has been removed. Figure 7 is a bottom view of the lens driving mechanism according to an embodiment of the present invention, where the housing has been removed. Figure 8 is a cross-sectional view of the lens driving mechanism 100 according to an embodiment of the present invention. As Figures 6-8 shown and in combination with Figure 1-5. The upper spring piece 20 as a whole includes an outer ring, an inner ring, and an elastic strip connecting the outer ring and the inner ring. The outer ring is provided with an upper spring piece frame connecting portion 202, and the inner ring is provided with an upper spring piece carrier connecting portion 201. Adjacent to one of the upper spring piece carrier connecting portions 201, there is a focusing coil connecting portion 203. The outer ring of the upper spring piece 20 is fixedly connected to the upper surface of the frame 30 through the upper spring piece frame connecting portion 202, and the inner ring of the upper spring piece 20 is fixedly connected to the upper surface of the carrier 50 through the upper spring piece carrier connecting portion 201. The lower spring piece 21 as a whole includes an outer ring 211, an inner ring 212, and an elastic strip 213 connecting the outer ring and the inner ring. The outer ring 211 and the inner ring 212 of the lower spring piece 21 are respectively fixedly connected to the lower surfaces of the frame 30 and the carrier 50. The external circuit of the present invention is directly electrically connected to the anti-shake coil (i.e., the built-in coil disposed in the circuit board) through the base-embedded metal sheet 62, simplifying the circuit, making the current transmission more stable, the transmission path shorter, and achieving an efficient optical anti-shake function. At the same time, the external circuit is connected to the focusing coil (i.e., the coil on the carrier) through the base-embedded metal sheet, the suspension wire, and the upper spring piece, without routing through the circuit board, simplifying the circuit, making the circuit more stable, and having a better focusing effect. At the same time, the first sensor and the second sensor are also directly connected to the external circuit and the controller through the base-embedded metal sheet, with efficient and stable signal transmission and high reliability.

[0047] In summary, the lens driving mechanism of the present invention has beneficial technical effects such as a simple circuit, high strength, and strong reliability.

[0048] 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, The lens driving mechanism includes a frame, a carrier, an upper spring piece, a lower spring piece, a suspension wire, a magnet group, a circuit board, and a base. The carrier is used for mounting a lens and wound with a focusing coil. The frame has a central opening. The magnet group is mounted on the frame and arranged around the central opening. The carrier is movably arranged in the central opening. The upper spring piece movably connects the upper surface of the carrier and the upper surface of the frame. The lower spring piece movably connects the lower surface of the carrier and the lower surface of the frame. The circuit board is provided with an anti-shake coil. The base is provided with a base-embedded metal sheet. The base-embedded metal sheet is electrically connected to the anti-shake coil. The base-embedded metal sheet is electrically connected to the focusing coil through the suspension wire and the upper spring piece. The focusing coil cooperates with the magnet group to achieve the focusing function. The anti-shake coil cooperates with the magnet group to achieve the anti-shake function. A plurality of first tape cutting grooves are further provided at the edge of the base, and a plurality of second tape cutting grooves are provided around the central hole of the base. The base has a first side portion, and a plurality of the first tape cutting grooves are arranged at both ends and the middle of the first side portion. The first tape cutting grooves and the second tape cutting grooves include a bottom and a side wall, and an arc portion is formed on the side wall. Suspension wire connection portions are provided at four corners of the base-embedded metal sheet, and the suspension wire connection portions communicate with the first tape cutting grooves. A base-embedded metal sheet central opening matching the central opening of the base is formed inside the base-embedded metal sheet. A plurality of circuit board connection portions are provided around the base-embedded metal sheet central opening. A first tape is provided at the suspension wire connection portion. A second tape is provided in the middle of the side portion of the base-embedded metal sheet. The first tape and the second tape correspond and cooperate with the first tape cutting grooves on the base. Both sides of the base-embedded metal sheet are bent away from the housing to form a plurality of external connection ends. The circuit board connection portion is integrally formed with one of the external connection ends and provided with a third tape, and the third tape corresponds and cooperates with the second tape cutting grooves on the base.

2. The lens driving mechanism according to claim 1, wherein The lens driving mechanism further includes a sensor. The base-embedded metal sheet is provided with a sensor mounting portion. The sensor is mounted on the sensor mounting portion and is externally connected through the base-embedded metal sheet.

3. The lens driving mechanism according to claim 2, wherein The sensor mounting portion protrudes upward from the base-embedded metal sheet by a certain distance, and an arc portion is provided at the place where the sensor mounting portion is connected to the base-embedded metal sheet.

4. The lens driving mechanism according to claim 3, wherein The sensor includes a first sensor and a second sensor. The first sensor and the second sensor are mounted on adjacent side portions of the base-embedded metal sheet to detect the displacement of the frame and the carrier in a plane perpendicular to the optical axis.

5. The lens driving mechanism according to claim 1, wherein The base forms a rectangular plate body. A base central hole is provided in the middle of the rectangular plate body, and a plurality of base-embedded metal sheet positioning and pressing holes are formed around the base central hole.

6. The lens driving mechanism according to claim 1, wherein, Inside the base-embedded metal sheet, a central opening of the base-embedded metal sheet is formed. A plurality of circuit board connection parts are arranged around the central opening of the base-embedded metal sheet, and the circuit board connection parts are electrically connected to the anti-shake coils on the circuit board.

7. The lens driving mechanism according to claim 1, wherein Suspension wire connection parts are arranged at four corners of the base-embedded metal sheet. Suspension wire connection holes are arranged at four corners of the base. The suspension wire connection parts and the suspension wire connection holes are correspondingly matched, and the lower end of the suspension wire is connected to the suspension wire connection parts.

Images