CN214375732U - Lens driving mechanism - Google Patents

Abstract

The utility model discloses a camera lens actuating mechanism, camera lens actuating mechanism include the shell, go up reed, carrier, first magnet group, second magnet group, frame, lower reed, suspension wire, circuit board, base and embedded sheetmetal. The carrier is installed in the hollow structure of frame and is set up well kenozooecium in order to install optical element, first magnet group installs on the frame, lower reed is with the lower surface swing joint of frame and carrier, go up the reed with the upper surface swing joint of frame and carrier, the carrier is equipped with first group coil and second magnet group, be equipped with second group coil in the circuit board, second group coil and second magnet group cooperation are in order to drive the carrier along X axle direction and Y axle motion when the circular telegram, first group coil and first magnet group cooperation are in order to drive the carrier along the optical axis direction motion when the circular telegram, the utility model discloses a lens actuating mechanism sets up coil and magnetite simultaneously on the carrier, compensates the lens shake through the rotation mode, realizes better anti-shake effect.

Description

Lens driving mechanism

Technical Field

The utility model relates to an optical imaging equipment technical field, concretely relates to camera lens actuating mechanism.

Background

With the development of technology, many electronic devices (such as smart phones or digital cameras) have a function of taking pictures or recording videos. Some electronic devices with a camera or video recording function are provided with a lens driving module to drive an Optical component such as a lens to move, so as to achieve the functions of auto focus (auto focus) and Optical Image Stabilization (OIS).

When a user uses an electronic device equipped with a lens module, the user may shake, and an image captured by the lens module may be blurred. However, the requirement for image quality is increasing, so the anti-shake function of the lens module is becoming more and more important.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a camera lens actuating mechanism to there is the problem that the camera lens rocked among the above-mentioned prior art to solve.

In order to solve the above problems, the present invention provides a lens driving mechanism, which comprises a housing, an upper spring, a carrier, a first magnet set, a second magnet set, a frame, a lower spring, a suspension wire, a circuit board, a base, and an embedded metal plate, wherein the upper spring, the carrier, the first magnet set, the second magnet set, the frame, the lower spring, the suspension wire, and the circuit board are installed in a space defined by the housing and the base,

the frame is provided with a hollow structure, the carrier is arranged in the hollow structure of the frame and is provided with a hollow part for mounting an optical element, the first magnet group is arranged on the frame, the lower reed is used for movably connecting the lower surface of the frame with the carrier, the upper reed is used for movably connecting the upper surface of the frame with the upper surface of the carrier, one end of the suspension wire is fixedly connected with the upper reed, the other end of the suspension wire is fixedly connected with the base and an embedded metal sheet, wherein the carrier is provided with a first group of coils matched with the first magnet group and is provided with a second magnet group, and a second group of coils matched with the second magnet group is arranged in the circuit board.

In one embodiment, the first group of coils and the first magnet group are matched to drive the carrier to move along the direction of an optical axis when being electrified, the second group of coils and the second magnet group are matched to drive the carrier to rotate along an X axis and a Y axis which are perpendicular to the optical axis when being electrified, the first group of coils and the second group of magnets are simultaneously arranged on the carrier, lens shaking can be compensated through a movement mode, and a better hand shock prevention effect is achieved.

In one embodiment, the carrier is provided with an extension extending radially outward, the first set of coils is disposed around the carrier and is in electrical communication with the extension, the upper spring is in electrical communication with the extension, current flows from the embedded metal sheet through the suspension wire and the upper spring to the first set of coils, and the first set of coils cooperates with a first set of magnets on the frame to drive the carrier to move in the optical axis direction when energized.

In one embodiment, the upper spring plate comprises an inner ring and an outer ring, the inner ring and the outer ring are elastically connected, the outer ring is provided with a suspension wire mounting hole, a frame mounting hole, a coil connecting part and a carrier mounting hole, the frame mounting hole is fixedly connected with the frame, the coil connecting part is fixedly connected with the extension part, and the carrier mounting hole is fixedly connected with the carrier, so that the carrier can move relative to the frame.

In one embodiment, one end of the suspension wire is fixedly connected with the upper spring plate through the suspension wire mounting hole, the other end of the suspension wire is fixedly connected with the base and the embedded metal plate, and current flows from the embedded metal plate to the first group of coils through the suspension wire and the double spring plate.

In one embodiment, the carrier comprises four carrier sides and four carrier corners which are opposite to each other in pairs, one carrier corner is arranged between every two carrier sides, the second magnet group is arranged at the four carrier corners, and the second group of coils is arranged in the circuit board and matched with the second magnet group to drive the carrier to move along X-axis directions and Y-axis directions which are perpendicular to each other when the circuit board is electrified, wherein the X-axis and the Y-axis directions are perpendicular to the optical axis direction.

In one embodiment, the circuit board is fixedly connected with the base and is electrically communicated with the embedded metal sheet, and current flows through a second group of coils in the circuit board through the embedded metal sheet, and the second group of coils and the second magnet group are matched to drive the carrier to move along the X-axis direction and the Y-axis direction which are perpendicular to each other when the circuit board is electrified.

In one embodiment, a third set of coils is further disposed in the circuit board, and the third set of coils is disposed below the second magnet set and is matched with the second magnet set to drive the carrier and drive the frame to move on a plane perpendicular to the optical axis.

In one embodiment, the upper surface of the frame is provided with a plurality of limiting grooves, and the extending part is installed in the limiting grooves and matched with the limiting grooves to limit the movement range of the carrier.

In one embodiment, an upper buffer member is further disposed in the limiting groove, and the upper buffer member is at least arranged between the end surface of the extending portion and the inner wall of the limiting groove to buffer the impact of the carrier on the frame when the carrier moves.

In one embodiment, the frame includes four frame sides and four frame corners, and a lower buffer member is disposed between the four frame corners and the base to buffer jitter generated when the carrier drives the frame to move in the optical axis direction.

In one embodiment, the upper cushioning component and or the lower cushioning component is damping glue.

In one embodiment, the embedded metal sheet is provided with at least 2 sensors which are respectively arranged at two adjacent sides and correspond to the first magnet group on the frame, the sensors detect the displacement of the frame and the carrier on a plane vertical to the optical axis by sensing the position change of the first magnet group,

compared with the prior art, the utility model discloses a camera lens actuating mechanism sets up coil and magnetite simultaneously on the carrier to can compensate the camera lens shake through rotatory mode, realize better anti-shake effect.

The utility model discloses a set up the buffering part simultaneously with the bottom in the frame recess, avoid the carrier at operation in-process carrier or frame direct contact and produce the shake phenomenon, can also cushion the collision that the carrier produced with the collision of base when driving the frame motion simultaneously, and then make carrier and frame along X axle, Y axle and optical axis gentle motion, play the anti-shake function.

Drawings

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

Fig. 2 is a perspective view of a carrier and a second set of magnets in the carrier according to one embodiment of the invention.

Fig. 3 is a perspective view of a frame and a first set of magnets within the frame in accordance with an embodiment of the present invention.

Fig. 4 is a top view of the frame, carrier, base and embedded sheet metal of an embodiment of the present invention after assembly.

Fig. 5 is a perspective view of the upper spring plate according to an embodiment of the present invention.

Fig. 6 is a perspective view of a lower spring plate according to an embodiment of the present invention.

Fig. 7 is a perspective view of a base according to an embodiment of the present invention.

Fig. 8 is a perspective view of an embedded metal sheet according to an embodiment of the present invention.

Fig. 9 is a perspective view of a base with an embedded metal sheet according to an embodiment of the present invention.

Fig. 10A is a top view of an assembly of a top spring, frame, carrier, suspension wire, base, and embedded sheet metal according to an embodiment of the invention.

Fig. 10B is a partially enlarged view of a portion a of fig. 10A.

Fig. 11 is a cross-sectional view of the assembled upper spring, frame, carrier, suspension wire, base and embedded metal sheet in accordance with an embodiment of the present invention.

Fig. 12 is a bottom view of the frame, the first magnet assembly, the carrier, the second magnet assembly, and the lower spring plate according to the embodiment of the present invention.

Fig. 13 is a sectional view of the frame, the first magnet group, the carrier, the second magnet group, the upper spring plate, and the lower spring plate according to the embodiment of the present invention after assembly.

Detailed Description

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

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

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

In the following description, for the sake of clarity, the structure and operation of the present invention will be described with the aid of directional terms, but the terms "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be understood as words of convenience and not as words of limitation.

One embodiment of the present application relates to a lens driving mechanism, which can be used in a terminal product such as a mobile phone and a tablet computer to cooperate with a lens to realize functions such as photographing and video recording, and mainly comprises a housing, an upper reed, a carrier, a first magnet group, a second magnet group, a frame, a lower reed, a suspension wire, a circuit board, a base and an embedded metal sheet, wherein the upper reed, the carrier, the first magnet group, the second magnet group, the frame, the lower reed, the suspension wire and the circuit board are installed in a space defined by the housing and the base, the frame has a hollow structure, the carrier is installed in the hollow structure of the frame and is provided with a hollow part for installing an optical element, the first magnet group is installed on the frame, the lower reed movably connects the lower surfaces of the frame and the carrier, the upper reed movably connects the frame and the upper surface of the carrier, one end of the suspension wire is fixedly connected with the upper reed, the other end of the suspension wire is fixedly connected with the base and the embedded metal sheet, wherein the carrier is provided with a first group of coils matched with the first magnet group in a surrounding manner and is provided with a second magnet group, and a second group of coils matched with the second magnet group is arranged in the circuit board. The optical focusing function is realized by the cooperation of the first group of coils and the first magnet group when the carrier is powered on to drive the carrier to move along the direction of the optical axis, and the optical anti-shake function is realized by the cooperation of the second group of coils and the second magnet group when the carrier is powered on to drive the carrier to move along the X axis and the Y axis which are perpendicular to the optical axis. The utility model discloses a camera lens actuating mechanism sets up coil and magnetite simultaneously on the carrier to can compensate the camera lens shake through rotatory mode, realize better hand shock prevention effect.

In another embodiment of the present application, a third set of coils may be further disposed in the circuit board, and the third set of coils is disposed below the second magnet set and cooperates with the second magnet set to drive the carrier and move the frame on a plane perpendicular to the optical axis. Therefore, the lens can be compensated in the translation direction and the inclination direction, and a better hand shock prevention effect is realized. Embodiments of the present application are described below with reference to the drawings.

Fig. 1 is an exploded perspective view of a lens driving mechanism according to an embodiment of the present invention, and as shown in fig. 1, the lens driving mechanism 100 includes a housing 10, an upper spring 20, a carrier 30, an upper buffer member 31, a first magnet group 51, a second magnet group 40, a frame 50, a lower buffer member 52, a lower spring 60, a suspension wire 71, a circuit board 70, a base 80, and an embedded metal plate 90. The carrier 30 is provided with a hollow 35 (see fig. 2) for mounting an optical element (not shown), and the carrier 30 is further provided with a first group coil 32 (see fig. 2) and a second magnet group 40 (see fig. 11). The frame 50 is a rectangular frame having a hollow structure 56, the carrier 30 is mounted in the hollow structure 56 of the frame 50, and four sidewalls 58 of the frame 50 mount the first magnet group 51. The upper reed 20 is fixedly connected with the carrier 30 and the upper surface of the frame 50, and is electrically connected with one end of the first group of coils 32 and one end of the suspension wire 71, the other end of the suspension wire 71 is fixed on the base 80 and is electrically connected with the embedded metal sheet 90, when the power is on, the current flows through the embedded metal sheet 90, the suspension wire 71 and the upper reed 20 to the first group of coils 32, and the first group of coils 32 cooperates with the first magnet group 51 on the frame 50 to drive the carrier 30 to move along the optical axis direction through electromagnetic induction, so as to perform optical zooming. The circuit board 70 is fixedly mounted on the upper portion of the base 80, the second set of coils 72 is disposed in the circuit board 70 (refer to fig. 11) and electrically connected to the embedded metal sheet 90 mounted on the base 80, and the second set of coils 72 cooperates with the second set of magnets 40 mounted on the carrier 30 to drive the carrier 30 to move along the mutually perpendicular X-axis direction and Y-axis direction when being powered on, so as to realize the compensation of the tilt direction.

In one embodiment, a third set of coils (not shown) may be further disposed in the circuit board 70, and the third set of coils is disposed below the second magnet set 40 and cooperates with the second magnet set 40 to drive the carrier 30 to move the frame 50 in a plane perpendicular to the optical axis, so as to compensate the translational direction. In this embodiment, it is possible to realize the displacement motion of the carrier 30 in the optical axis direction, the translational motion on the plane perpendicular to the optical axis direction, and the rotational motion about the two axes perpendicular to the optical axis, thereby realizing the five-axis anti-shake effect.

Fig. 2 is a perspective view of a carrier according to an embodiment of the present invention, as shown in fig. 2, the carrier 30 includes four carrier sides 37 and four carrier corners 38 opposite to each other in pairs, the four carrier sides 37 and the four carrier corners 38 form an octagon, one carrier corner 38 is disposed between every two carrier sides 37, the four carrier corners 38 are provided with extending portions 33 extending radially outward, and the shape of the extending portions 33 may be rectangular, circular, irregular polygonal or other shapes, preferably rectangular. The extensions 33 are adapted to mate with grooves on the frame 50 to constrain the range of motion of the carrier relative to the frame, as will be described further below. The carrier 30 is provided with a hollow portion 35 therein, the hollow portion 35 is used for mounting an optical element (not shown), and the shape of the hollow portion 35 matches the shape of the optical element and can be set according to the shape of the optical element. The upper surfaces (i.e., surfaces far from the base) of the four carrier corners 38 of the carrier 30 are provided with a plurality of upper spring positioning columns 35 to be fitted with the carrier mounting holes 24 of the upper springs 20 to position and fixedly connect the upper springs 20, the bottoms (i.e., surfaces facing the base) of the four carrier corners 38 of the carrier 30 are provided with magnet grooves 34 (see fig. 11), and the second magnet group 40 includes four magnets and is mounted in each of the magnet grooves 34 from below to above, respectively. A first set of coils 32 is disposed around the outer periphery of the carrier 30, the first set of coils 32 being in electrical communication with the extension 33.

Fig. 3 is a perspective view of a frame according to an embodiment of the present invention, as shown in fig. 3, the frame 50 forms a rectangular frame structure and a hollow structure 56 in the middle, and the hollow structure 56 is matched with the outer contour of the carrier 30 to mount the carrier 30. Similar to the carrier, the frame 50 comprises four frame sides 58 and four frame corners 59, each frame corner 59 being provided with a retaining groove 53, the retaining grooves 53 being open towards the upper and inner parts, i.e. the hollow structure 56, each extension 33 of the carrier 30 being movably mounted in each retaining groove 53 of the frame 50. Each frame side 58 of the frame 50 has a frame magnet slot 54 (see fig. 12), each frame magnet slot 54 has an opening towards the base, and the first magnet group 50 preferably comprises four magnets, one magnet being mounted in each frame magnet slot 54. The upper surfaces of the four frame corners 59 of the frame 50 are provided with a plurality of upper reed positioning posts 55, and the plurality of upper reed positioning posts 55 are fitted with the plurality of frame mounting holes 22 of the upper reed 20 to fixedly connect the upper reed 20. Suspension wire avoiding portions 57 are further provided on the outer side surfaces of the four frame corners 59 of the frame 50 to avoid the suspension wires 71 so that the suspension wires 71 directly connect the upper spring 20 and the base 80.

Fig. 4 is a top view of the frame, carrier, base and embedded metal sheet of an embodiment of the present invention after assembly, as shown in fig. 4, the carrier 30 is installed in the hollow structure 56 of the frame 50, and the extension 33 is installed in the frame groove 53 and cooperates with the limit groove 53 on the upper surface of the frame to limit the range of motion of the carrier 30 relative to the frame 50.

In one embodiment, an upper buffer member 31 is further disposed in the limiting groove 53 of the frame 50, and the upper buffer member 31 is disposed at least between an end surface of the extending portion 33 and an inner wall of the limiting groove 53 to buffer the carrier 30 from hitting the frame 50 when rotating in the mutually perpendicular X-axis direction and Y-axis direction. Upper cushioning member 31 may be any shape, such as square, circular polygon, or other shape, preferably square, and is preferably made of damping rubber.

Fig. 5 is a perspective view of an upper spring plate according to an embodiment of the present invention, as shown in fig. 5, the upper spring plate 20 includes an inner ring 25 and an outer ring 26, the inner ring 25 is a circular hollow structure, the diameter of the circular hollow structure is slightly larger than the diameter of the hollow part 35 of the carrier, and the inner ring 25 and the outer ring 26 are connected by an elastic strip 27 so that a relative motion can be performed between the inner ring 25 and the outer ring 26. Wherein the outer ring 26 is fixedly connected to the upper surface of the frame 50, and the inner ring 25 is fixedly connected to the upper surface of the carrier 30, so that the upper surface of the carrier 30 is movably connected to the upper surface of the frame 50 through the upper spring 20, for example, when the second set of coils 72 in the circuit board 70 is energized and then is engaged with the second magnet set 40, the carrier 30 can rotate along the mutually perpendicular X-axis or Y-axis on the plane perpendicular to the optical axis relative to the frame 30.

In one embodiment, the four corners of the outer ring 26 of the upper leaf 20 are provided with a plurality of suspension mounting holes 21, and the plurality of suspension mounting holes 21 are located outside the suspension escape portion 57 of the frame 50 and fixedly connected to one end of the suspension 71.

In one embodiment, the outer ring 26 of the upper spring 20 is provided with a plurality of frame mounting holes 22, and the plurality of frame mounting holes 22 are located inside the suspension wire mounting holes 21 and are fixedly connected with the upper spring positioning posts 55. The inner ring 25 of the upper reed 20 is provided with a plurality of carrier mounting holes 24, and the carrier mounting holes 24 are fixedly connected with the carrier positioning columns 35. The upper spring plate 20 is fixedly connected to the upper surfaces of the frame 50 and the carrier 30 through the frame mounting hole 22 and the carrier mounting hole 24, respectively.

In one embodiment, the inner ring 25 of the upper spring plate 20 is further provided with a plurality of coil connectors 23, the coil connectors 23 are fixedly connected to the extension 33, and the extension 33 is conductive and electrically connects the first group of coils 32, so that the upper spring plate 20 is electrically connected with the first group of coils 32 through the extension 33.

Fig. 6 is a perspective view of a lower spring plate according to an embodiment of the present invention, as shown in fig. 6, similar to the upper spring plate, the lower spring plate 60 also includes an inner ring 63 and an outer ring 64, the inner ring 63 is also a circular hollow structure and is engaged with a lens, and the inner ring 63 and the outer ring 64 are connected by an elastic strip 65, so that a relative movement can be performed between the inner ring 63 and the outer ring 64. Wherein, the outer ring 64 is fixedly connected to the lower surface of the frame 50, the inner ring 63 is fixedly connected to the lower surface of the carrier 30, so that the lower surface of the carrier 30 is movably connected with the lower surface of the frame 50 through the lower spring 60, and the frame 50 and the carrier 30 connected through the lower spring 60 can also perform relative movement. The outer ring of the lower spring 60 is provided with a plurality of frame mounting holes 61, the inner ring is provided with a plurality of carrier mounting holes 62, and the frame mounting holes 61 and the carrier mounting holes 62 are respectively fixedly connected to the lower surfaces of the frame 50 and the carrier 30.

Fig. 7 is a perspective view of the base according to an embodiment of the present invention, as shown in fig. 7, the base 80 is a rectangular plate main body, the middle of the rectangular plate main body forms a central opening 84 to cooperate with the lens, the central opening 84 is surrounded to form four base side portions and four base corners, the peripheries of the four base corners are further provided with suspension wire connecting holes 83, the central opening 84 is surrounded to be further provided with a plurality of circuit board connecting ports 81, the circuit board connecting ports 81 are used for installing circuit board connecting ends 91 of the embedded metal sheets 90, so as to electrically connect the circuit board 70 through the circuit board connecting ends 91. In one embodiment, the circuit board connection ports 81 are formed by being recessed on the inner sidewalls of the four base corners.

With continued reference to fig. 7, the base 80 is further provided with at least two sensor mounting portions 82, the two sensor mounting portions 82 are preferably disposed on two adjacent sides of the base 80, the two sensor mounting portions 82 are used for mounting two sensors 92, and the two sensors 92 cooperate with part of the magnets in the first magnet group 51 mounted on the frame 50 to detect the displacement of the carrier and the lens. Wherein, when assembled, the base 80 fits under the circuit board 70 and mates with the housing 10, thereby enclosing the entire assembly within the space defined by the housing 10 and the base 80.

Fig. 8 is a perspective view of an embedded metal sheet according to an embodiment of the present invention, fig. 9 is a perspective view of a base with an embedded metal sheet according to an embodiment of the present invention, as shown in fig. 8-9, the embedded metal sheet 90 is disposed on the base 80 and integrally forms a rectangular frame with a hollow structure 94, and the diameter of the hollow structure 94 is slightly larger than that of the hollow structure 35 of the carrier 30 and is matched with a lens. A plurality of circuit board connection terminals 91 are provided around four corners of the hollow structure 94, and the circuit board connection terminals 91 correspond to the circuit board connection ports 81 embedded in the base 80 and electrically connect the circuit board 70.

With continued reference to fig. 8 to 9, the four corners of the embedded metal sheet 90 are provided with a plurality of suspension wire mounting holes 93, the suspension wire mounting holes 93 correspond to the suspension wire connection holes 83 on the base 80, the embedded metal sheet 90 is embedded in the base 80, and one end of the suspension wire 71 is connected to the suspension wire mounting holes 93 through the suspension wire connection holes 83 to be electrically connected to the embedded metal sheet 90. The embedded metal sheet 90 is further provided with at least two sensors 92 and is correspondingly mounted in the two sensor mounting portions 82 of the base 80.

Fig. 10A is a plan view of an upper spring plate, a frame, a carrier, a suspension wire, a base, and an embedded metal plate according to an embodiment of the present invention, fig. 10B is a partially enlarged view of a portion a of fig. 10A, and fig. 11 is a cross-sectional view of an upper spring plate, a frame, a carrier, a suspension wire, a base, and an embedded metal plate according to an embodiment of the present invention, as shown in fig. 10A, 10B, and 11, a vertical direction of a suspension wire mounting hole 21 on the upper spring plate 20 corresponds to suspension wire connecting holes 83 at four corners of the base 70 and suspension wire mounting holes 93 on the embedded metal plate 90, a suspension wire mounting hole 21 of the upper spring plate 20 is fixedly connected to one end of the suspension wire 71, and a suspension wire mounting hole 93 of the embedded metal plate 90 is electrically connected to the other end of the suspension wire 71. The frame mounting holes 22 of the upper spring 20 are fixedly connected to the upper spring positioning posts 55 at the four corners 59 of the frame 50, respectively, and the carrier mounting holes 24 of the upper spring 20 are fixedly connected to the upper spring positioning posts 35 of the carrier 30, respectively. The coil connecting portion 23 of the upper spring 20 is fixedly connected to the extension portion 33 and electrically connected to the first group coil 32. The suspension wire 71, the upper spring plate 20 and the extension portion 33 are all electrically conductive, when the current is applied, the current flows through the suspension wire 71, the upper spring plate 20 to the first set of coils 32, and the first set of coils 32 cooperates with the first magnet set 51 on the frame 50 to drive the carrier 30 to drive the frame 70 to move along the optical axis direction.

As shown in fig. 11, a second set of coils 72 is disposed inside the circuit board 70, the second set of coils 72 is mounted inside the circuit board 70, a current flows from the embedded metal sheet 90 through the second set of coils 72 inside the circuit board 70, and the second set of coils 72 cooperates with the second set of magnets 40 inside the carrier 30 to drive the carrier 30 to rotate along the mutually perpendicular X-axis direction and Y-axis when energized. Preferably, the second group of magnets 40 are arranged at the corners of the carrier 30, and correspondingly, the second group of coils 72 are arranged at the four corners of the circuit board 70.

In one embodiment, a plurality of lower buffer members 52 are disposed between the four corners 59 of the frame 50 and the base 80, the lower buffer members 52 may be fixedly disposed at the bottom (toward the base direction) of the four corners 59 of the frame 50, and may also be fixedly mounted on the base 70 corresponding to the four corners 59, the lower buffer members 52 may be in any shape, such as square, circular polygon or other shape, preferably square, and are preferably made of damping glue, and the lower buffer members 52 are used for buffering the collision between the carrier 30 and the base 80 when the frame 50 is moved in the optical axis direction.

Fig. 12 is a bottom view of the frame and the first magnet group, the carrier and the second magnet group, the assembly of the lower spring plate of an embodiment of the present invention, fig. 13 is a cross-sectional view of the frame and the first magnet group, the carrier and the second magnet group, the upper spring plate, the assembly of the lower spring plate of an embodiment of the present invention, as shown in fig. 12, four carrier corners 38 bottoms of the carrier 30 are provided with magnet grooves 34, the magnet grooves 34 are rectangular grooves, and the second magnet group 40 includes four magnets and is installed in the magnet grooves 34 of the carrier 30 from bottom to top respectively. Four lateral parts 58 of frame 50 set up frame magnet groove 54, and frame magnet groove 54 is towards the opening of base 80 direction, and first magnet group 51 includes four magnetite and from down up installs inside frame magnet groove 54, and frame magnet groove 54 is the rectangle recess, also can be for other shapes that can set up in four lateral parts 58 of frame.

As shown in fig. 13, the outer periphery of the carrier 30 is provided with a communicating coil groove 36, the coil groove 36 is opened to the outside, the first group coil 32 is wound in the coil groove 36 and electrically communicated with the extension portion 33, and in the energized state, the first group coil 32 drives the carrier 30 to move in the optical axis direction in cooperation with the first magnet group 51 on the frame 50.

In another embodiment, a third set of coils may be further disposed in the circuit board 70, and the third set of coils is disposed below the first magnet set 51, so that when the power is applied, the driving frame 50 drives the carrier 30 to move on a plane perpendicular to the optical axis, for example, along the mutually perpendicular X-axis and Y-axis, thereby achieving optical compensation in the horizontal direction and further improving the effect of preventing hand shock. For example, the third set of coils is disposed on four sides of the circuit board 70 to correspondingly mate with the second magnet set 40, and the second set of coils 72 is disposed on four corners of the circuit board to correspondingly mate with the first magnet set 51.

The preferred embodiments of the present invention have been described in detail, but it should be understood that various changes and modifications can be made by those skilled in the art after reading the above teaching of the present invention. Such equivalents are intended to fall within the scope of the claims appended hereto.

Claims (10)

1. A lens driving mechanism is characterized by comprising a shell (10), an upper reed (20), a carrier (30), a first magnet group (51), a second magnet group (40), a frame (50), a lower reed (60), a suspension wire (71), a circuit board (70), a base (80) and an embedded metal sheet (90), wherein the upper reed (20), the carrier (30), the first magnet group (51), the second magnet group (40), the frame (50), the lower reed (60), the suspension wire (71) and the circuit board (70) are arranged in a space defined by the shell (10) and the base (80),

the frame (50) is provided with a hollow structure (56), the carrier (30) is arranged in the hollow structure (56) of the frame (50) and is provided with a hollow part (35) for mounting an optical element, the first magnet group (51) is arranged on the frame (50), the lower reed (60) movably connects the frame (50) and the lower surface of the carrier (30), the upper reed (20) movably connects the frame (50) and the upper surface of the carrier (30), one end of the suspension wire (71) is fixedly connected with the upper reed (20), the other end of the suspension wire (71) is fixedly connected with the base (80) and the embedded metal sheet (90), wherein,

the carrier (30) is provided with a first group of coils (32) matched with the first magnet group (51) and is provided with the second magnet group (40), and a second group of coils (72) matched with the second magnet group (40) are arranged in the circuit board (70).

2. A lens driving mechanism according to claim 1, wherein the first set of coils (32) cooperates with the first magnet set (51) to drive the carrier (30) in the direction of the optical axis when energized, and the second set of coils (72) cooperates with the second magnet set (40) to drive the carrier (30) in the X-axis and Y-axis perpendicular to the optical axis when energized.

3. Lens driving mechanism according to claim 2, wherein the upper spring plate (20) comprises an inner ring (25) and an outer ring (26), the inner ring (25) is elastically connected with the outer ring (26), the outer ring (26) is provided with a suspension wire mounting hole (21), a frame mounting hole (22), a coil connecting part (23) and a carrier mounting hole (24), the frame mounting hole (22) is fixedly connected with the frame (50), the first group of coils (32) surrounds the carrier (30) and is fixedly and electrically connected with the coil connecting part (23), the carrier mounting hole (24) is fixedly connected with the carrier (30), one end of the suspension wire (71) is fixedly connected with the upper reed (20) through the suspension wire mounting hole (21), the other end of the suspension wire (71) is fixedly connected with the base (80) and the embedded metal sheet (90).

4. A lens driving mechanism according to claim 3, wherein a magnet groove (34) is provided at the bottom of the carrier (30), the second magnet group (40) is arranged in the magnet groove (34), and the second group of coils (72) is arranged in the circuit board (70) and cooperates with the second magnet group (40) to drive the carrier (30) to rotate along mutually perpendicular X-axis and Y-axis when energized, wherein the X-axis and the Y-axis are perpendicular to the optical axis direction.

5. The lens driving mechanism according to claim 4, wherein the circuit board (70) is fixedly connected to the base (80) and electrically communicates with the embedded metal sheet (90), and current flows through the embedded metal sheet (90) through the second set of coils (72) in the circuit board (70).

6. Lens driving mechanism according to claim 4, characterized in that a third set of coils is further provided in the circuit board (70), which is arranged below the second set of magnets (40) and cooperates with the second set of magnets (40) to drive the carrier (30) and the frame (50) in a plane perpendicular to the optical axis.

7. A lens driving mechanism according to claim 3, wherein a limiting groove (53) is provided on the frame (50), and the carrier is provided with an extending portion (33) extending radially outward and mounted in the limiting groove (53), and cooperates with the limiting groove (53) to limit the moving range of the carrier (30).

8. Lens driving mechanism according to claim 7, wherein an upper buffer member (31) is provided in the stopper groove (53), the upper buffer member (31) being arranged at least between an end surface of the extension portion (33) and an inner wall of the stopper groove (53) to buffer the carrier (30) from hitting the frame when moving.

9. The lens driving mechanism according to claim 8, wherein a lower buffer member (52) is provided between a bottom of the frame (50) and the base (80) to buffer a shake generated when the carrier (30) moves the frame (50) in the optical axis direction.

10. A lens driving mechanism according to claim 9, wherein the upper cushion member (31) and/or the lower cushion member (52) is a damping paste.

Images