Driving device, camera module and electronic equipment

Abstract

The application belongs to the technical field of camera lens driving, and particularly relates to a driving device, a camera module and electronic equipment. It solves the defects of unreasonable design in the prior art. The driving device comprises a base, a focusing frame connected to the base and moving in the optical axis direction, a lens moving frame connected to the focusing frame through a suspension wire and moving in a plane perpendicular to the optical axis, and the focusing frame is sleeved on the front end periphery of the lens moving frame. The application has the following advantages: when the focusing frame moves forward for focusing, the focusing frame is located at one end of the top surface of the lens moving frame, at this time, the focusing frame pulls the lens moving frame and moves forward together, in this state, the suspension wire is in a pulled state, and the suspension wire does not bend, so that the lens axis of the lens moving frame always coincides with the optical axis, thereby ensuring the focusing efficiency and focusing accuracy.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of camera lens driving, and particularly relates to a driving device, a camera module and an electronic device. BACKGROUND

[0002] When taking pictures, in order to improve the high-pixel image quality, the camera needs to prevent hand-shaking while focusing, so the optical anti-shake mechanism is widely used in advanced cameras.

[0003] The anti-shake bracket of the traditional OIS motor is sleeved on the periphery of the focusing bracket. A sensor displacement type anti-shake camera module, an anti-shake camera system and a mobile terminal are disclosed in a Chinese patent with the application number CN202110644362.4, which comprises a module shell, a bottom cover, a lens, a motor, a bracket, a photosensitive chip, a filter and a circuit board. The lens is installed on the motor. The top surface of the motor is attached to the inner wall of the top of the module shell. The bracket is attached to the bottom surface of the motor. The filter is attached to the bracket. The head hard plate of the circuit board is located below the bracket, and the bracket and the head hard plate of the circuit board are connected by a suspension line. At the same time, the motor is electrically connected to the circuit board through the suspension line. The photosensitive chip is arranged on the head hard plate of the circuit board, and a first coil corresponding to the magnet on the motor is arranged around the head hard plate. The magnet on the motor also corresponds to the second coil of the motor. This scheme uses the movement of the photosensitive chip to compensate for the terminal shaking and stabilize the picture. At this time, the anti-shake and focusing are respectively provided with corresponding driving magnets to meet the focusing and anti-shake driving requirements. The defect of this way is that the cost is high, and when the anti-shake frame moves horizontally in the vertical optical axis plane, the movement of the magnet easily causes magnetic interference to the surrounding electromagnetic mechanism, or the movement of the magnet is affected by the surrounding electromagnetic mechanism, which cannot meet the anti-shake precision requirement.

[0004] In order to solve the above technical problems, a camera module is disclosed in a Chinese patent with the application number CN201520479391.X, which comprises a shell, a focusing mechanism, a lens module, an anti-shake mechanism, a flexible circuit board and a base. The focusing mechanism comprises a carrier, an upper spring sheet, a lower spring sheet, a focusing coil and an upper magnet. The carrier comprises an upper mounting plate, a lower mounting plate and a lens assembly cylinder. The anti-shake mechanism comprises a guide rod, a lower magnet and an anti-shake coil. The lower mounting plate protrudes upward to form a guide rod mounting plate. A through hole is formed in the guide rod mounting plate. The two ends of the guide rod are respectively arranged in the through hole. One end of the spring abuts against the outer wall of the guide rod mounting plate, and the other end abuts against the inner surface of the side wall of the shell. The above structure realizes the focusing and anti-shake functions, and the structure is simple. Moreover, the suspension line structure is not used, so that special materials are not needed, and the cost is saved.

[0005] Although the prior art document has the advantages as above, the above-mentioned scheme has a complex structure and needs a complex conductive way to realize the power supply for focusing and anti-shaking, which is high in cost.

[0006] Of course, there are also motors on the market that focus the frame on the rear end of the anti-shake frame, but because the autofocus device is on the rear end of the lens carrier in the optical axis direction, when the focusing movement is performed, the lens carrier arranged in front of the autofocus device is driven by the back-pushing type drive of the autofocus device to perform forward focusing movement, and when the back-pushing forward movement is performed, the suspension wire at this time is prone to different degrees of axial length deformation, and the axial line of the lens carrier deviates from the optical axis at this time, affecting the focusing efficiency and accuracy. SUMMARY

[0007] The purpose of the present application is to solve the above technical problems.

[0008] To achieve the above purpose, the present application adopts the following technical solutions:

[0009] The driving device comprises a base;

[0010] A focusing frame connected to the base and moving in the optical axis direction;

[0011] A lens moving frame sleeved on the front end of the lens moving frame and moving in a plane perpendicular to the optical axis;

[0012] A plurality of suspension wires, the front end of the suspension wire being elastically connected to the focusing frame, and the rear end of the suspension wire being connected to the lens moving frame.

[0013] In the above driving device, the base is clamped with a shell, a magnet group is arranged on the inner wall of the shell, a focusing coil group is arranged on the outer periphery of the focusing frame and located inside the inner side of the vertical surface of the magnet group, an anti-shake coil group is arranged on the outer periphery of the lens moving frame and located inside the inner side of the vertical surface of the magnet group, and the focusing coil group and the anti-shake coil group are distributed in front of and behind each other in the optical axis direction.

[0014] As another solution, in the above driving device, the front side of the base is provided with a magnet group, the outer periphery of the focusing frame is provided with a focusing coil group located inside the inner side of the vertical surface of the magnet group, and the outer periphery of the lens moving frame is provided with an anti-shake coil group located inside the inner side of the vertical surface of the magnet group, and the focusing coil group and the anti-shake coil group are distributed in front of and behind each other in the optical axis direction.

[0015] In the above driving device, the distance one between the focusing coil group and the inner vertical surface of the magnet group is less than the distance two between the anti-shake coil group and the inner vertical surface of the magnet group.

[0016] In the driving device, the magnet groups are four groups and are distributed on the four sides of the front side of the base or the four inner walls of the shell, and the front side surface of each magnet group is beyond the front end surface of the focusing frame.

[0017] In the driving device, the focusing coil group is a coil surrounding the outer periphery of the focusing frame, and the anti-shake coil group is four groups, and one magnet group corresponds to one anti-shake coil group.

[0018] In the driving device, the driving device further comprises:

[0019] The front spring sheet is connected to the first table surface of the corner of the base and the front end surface of the focusing frame, and the front end of the suspension wire is connected to the cantilever spring part of the suspension side of the front spring sheet, and the rear end of the suspension wire passes through the gap between the lens moving frame and the focusing frame and is connected to the rear side of the lens moving frame.

[0020] The rear spring sheet is connected to the second table surface of the corner of the base and the rear end surface of the focusing frame.

[0021] In the driving device, the rear end surface of the lens moving frame is provided with a circuit board, the circuit board is electrically connected with the anti-shake coil group, and the suspension wire is a metal wire and is electrically connected with the circuit board.

[0022] In the driving device, the outer wall of the lens moving frame is provided with a concave avoiding groove avoiding the cantilever spring part, the rear side of the lens moving frame is provided with a wire passing avoiding hole communicating with the concave avoiding groove, the circuit board is provided with a wire positioning hole communicating with the wire passing avoiding hole, and the suspension wire passes through the concave avoiding groove and the wire passing avoiding hole, and the rear end of the suspension wire is fixed in the wire positioning hole.

[0023] In the driving device, the outer wall of the lens moving frame away from the rear side of the focusing frame is provided with a detection magnet, and the base is provided with a detection chip located outside the detection magnet.

[0024] In the driving device, the detection magnet is four groups and is fixed to the four outer corners of the lens moving frame, and the outer corner of the lens moving frame is provided with a magnet positioning groove, and the detection magnet is arranged in the magnet positioning groove.

[0025] In the driving device, the base is embedded with a conductive part electrically connected with the front spring sheet.

[0026] The application also provides a camera module comprising the driving device.

[0027] The application also provides an electronic device comprising the camera module.

[0028] Compared with the prior art, the application has the advantages of:

[0029] When the focusing frame moves forward to focus, the focusing frame is at the top end of the lens moving frame, at this time, the focusing frame will pull the lens moving frame and move forward together, and in this state, the suspension line is in a pulled state and does not bend, so that the lens axis in the lens moving frame always coincides with the optical axis, to ensure the focusing efficiency and focusing accuracy.

[0030] The focusing frame is at the front end of the lens moving frame, and the thickness of the focusing frame can be greatly reduced in the optical axis direction to reduce the cost, the reduction of the thickness can reduce the weight of the focusing frame, and the width of the magnet in the optical axis direction can be increased, so that the magnetic force thrust is further enhanced.

[0031] The thickness of the focusing frame is reduced (light weight), so that the focusing driving force can be relatively reduced to reduce the cost.

[0032] The magnet is used for focusing and anti-shake, and the magnet is fixed in a manner, which can reduce the driving force of focusing or anti-shake (because the weight of the magnet is heavy), and also meet the requirements of focusing and anti-shake.

[0033] The focusing adopts the moving coil mode, which can improve the focusing accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is the three-dimensional structure schematic diagram of the driving device provided by the application.

[0035] Figure 2 is the top surface structure schematic diagram of the driving device provided by the application.

[0036] Figure 3 is Figure 2 is the structure schematic diagram of the A-A section along the line in the application.

[0037] Figure 4 is the structure schematic diagram of the driving device after removing the shell provided by the application.

[0038] Figure 5 is Figure 4 is another perspective three-dimensional structure schematic diagram.

[0039] Figure 6 is Figure 5 is the structure schematic diagram after removing the base provided by the application.

[0040] Figure 7 is the base structure schematic diagram provided by the application.

[0041] Figure 8 is the detection structure schematic diagram provided by the application.

[0042] Figure 9 is the structural schematic diagram of the third embodiment provided by the present application.

[0043] Figure 10 is the structural schematic diagram of the fourth embodiment provided by the present application.

[0044] In the figure, the base 1, the corner first table 10, the corner second table 11, the detection chip 12, the conductive piece 13, the FPC circuit board 14, the second conductive piece 15, the focusing frame 2, the focusing coil group 20, the front end surface 21, the lens moving frame 3, the anti-shake coil group 30, the concave avoiding slot 31, the wire hanging through avoiding hole 32, the wire hanging positioning hole 33, the detection magnet 34, the circuit board 35, the suspension wire 4, the shell 5, the magnet group 6, the front spring piece 7, the cantilever spring part 70, the rear spring piece 8. DETAILED DESCRIPTION

[0045] The following is a specific embodiment of the application and further describes the technical solutions of the present application in combination with the drawings, but the present application is not limited to these embodiments.

[0046] Embodiment one

[0047] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the present driving device includes the base 1, the focusing frame 2, the lens moving frame 3, the front spring piece 7 and the rear spring piece 8.

[0048] In this embodiment, the focusing frame 2 is connected to the base 1 and the focusing frame 2 moves in the optical axis axial direction. The focusing frame 2 can be connected to the base 1 through the front and rear spring piece mode, or connected to the base 1 through the combination of the ball and the spring piece.

[0049] And the electromagnetic driving mode is adopted in the optical axis axial movement, that is, the cooperation mode of the magnet and the coil.

[0050] In this embodiment, the front end of the focusing frame 2 close to the light entering end of the optical axis is the front end, and the end far from the light entering end is the rear end, and the same is true for the lens moving frame.

[0051] The lens moving frame 3 is connected to the focusing frame 2 through the suspension wire 4 and the lens moving frame 3 moves in the plane perpendicular to the optical axis.

[0052] The suspension wire 4 enables the lens moving frame 3 to be connected to the focusing frame 2 and enables the anti-shake movement to be realized.

[0053] The focusing frame 2 is sleeved on the front end of the lens moving frame 3, and the inner wall of the focusing frame 2 and the outer wall of the lens moving frame 3 are reserved with the anti-shake movement gap.

[0054] The front end surface of the focusing frame 2 can be beyond the front end surface of the lens moving frame 3, of course, the front end surface of the focusing frame 2 can be flush with the front end surface of the lens moving frame 3, or the front end surface of the lens moving frame 3 is beyond the front end surface of the focusing frame 2, the above three cases belong to the case that the focusing frame 2 is sleeved on the front end periphery of the lens moving frame 3.

[0055] When the focusing frame 2 moves forward to focus, the focusing frame 2 of the embodiment is at the top surface end of the lens moving frame 3, at this time the focusing frame 2 pulls the lens moving frame 3 and moves forward together, and in this state, the suspension line at this time is in a pulled state, and the suspension line does not bend, so that the lens axis in the lens moving frame 3 always coincides with the optical axis, to ensure the focusing efficiency and focusing accuracy.

[0056] Secondly, the focusing frame 2 is at the front end periphery of the lens moving frame 3, which can greatly reduce the thickness of the focusing frame 2 in the optical axis direction to reduce the cost, the reduction of the thickness can reduce the weight of the focusing frame 2 and can increase the width of the magnet in the optical axis direction of the magnet group 6, the increase of the width of the magnet can further enhance the magnetic thrust.

[0057] In addition, the thickness of the focusing frame 2 is reduced (light weight), so that the focusing driving force can be relatively reduced to reduce the cost.

[0058] And the focusing frame 2 is reset by the spring after focusing forward.

[0059] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the shell 5 is buckled on the base 1, the shell 5 and the inside of the base 1 form a cavity, the above focusing frame 2 and lens moving frame 3 are in the cavity, the magnet group 6 is arranged on the inner wall of the shell 5, the magnet group 6 is used for focusing and anti-shake, which can greatly reduce the cost, and can be assembled separately with the base 1 to complete the whole assembly, which is more efficient.

[0060] Secondly, when the shell 5 is made of metal material, it can increase the magnetism of the magnet group, so that the magnetic force of the magnet group is stronger.

[0061] The focusing coil group 20 is arranged on the inner side of the inner vertical surface of the magnet group 6, and the focusing coil group 20 is arranged on the outer periphery of the focusing frame 2. After the magnet group 6 and the focusing coil group 20 are energized, they cooperate to generate Lorentz force in the optical axis direction (i.e. Z-axis direction) to meet the focusing requirement.

[0062] The anti-shake coil group 30 is arranged on the outer periphery of the lens moving frame 3 and located on the inner side of the inner vertical surface of the magnet group 6. After the anti-shake coil group 30 is energized, it cooperates with the magnet group 6 to generate anti-shake driving force perpendicular to the optical axis plane, i.e. Lorentz force in X direction and Y direction, to meet the anti-shake requirement.

[0063] The focusing coil group 20 and the anti-shake coil group 30 are arranged in front of and behind each other in the direction of the optical axis. The arrangement in front of and behind each other makes the structure more compact, prevents mutual motion contact and interference, and, in combination with the fixed magnet group 6, prevents magnetic interference from affecting the anti-shake and focusing performance, so that the focusing and anti-shake motion is more accurate and the accuracy is greatly improved.

[0064] The thickness of the focusing frame 2 in the direction of the optical axis is 1 / 3-1 / N of the thickness of the lens moving frame 3 in the direction of the optical axis, and N is greater than 3.

[0065] As shown in Figure 3 The interval one formed between the focusing coil group 20 and the inner vertical surface of the magnet group 6 is less than the interval two formed between the anti-shake coil group 30 and the inner vertical surface of the magnet group 6. The design that the focusing coil group 20 is closer to the inner vertical surface of the magnet group 6 can make the focusing coil group 20 and the anti-shake coil group 30 staggered, so as to prevent the magnetic fields of the focusing and anti-shake from interfering with each other.

[0066] Specifically, the magnet group 6 of the embodiment has four groups and is distributed on the four inner walls of the shell 5, and each magnet group 6 includes at least one magnet.

[0067] Because the shell is punched and made, the shell has high precision and stable structure, the magnet group is directly fixed on the four inner walls of the shell, and the front side surface 60 abuts against the inner top surface of the shell 5, so as to ensure the parallelism of the magnet group and the optical axis.

[0068] The front side surface 60 of each magnet group 6 exceeds the front side end surface 21 of the focusing frame 2. Because the focusing frame 2 needs to complete the focusing motion, the excess part can meet the motion requirement of the entire focusing process.

[0069] Secondly, the focusing coil group 20 is a coil surrounding the outer periphery of the focusing frame 2, for example, a ring-shaped coil groove is arranged on the outer periphery of the focusing frame 2, and the focusing coil group 20 is arranged in the ring-shaped coil groove.

[0070] The anti-shake coil group 30 of the embodiment has four groups, and one group of the magnet group 6 corresponds to one group of the anti-shake coil group 30. The driving requirements of the anti-shake X-axis direction and the Y-axis direction are met.

[0071] As shown in Figures 4-6 The front spring sheet 7 is connected to the front end surface of the focusing frame 2 and the corner first table 10 of the base 1, and the front end of the suspension wire 4 is connected to the cantilever spring part 70 of the front spring sheet 7. The rear end of the suspension wire 4 passes through the gap between the lens moving frame 3 and the focusing frame and is connected to the rear side of the lens moving frame 3.

[0072] Preferably, the cantilever spring part 70 of the front spring sheet 7 is integrally formed on the inner side of the front spring sheet 70.

[0073] The front spring 7 serves to conduct electricity and provide elastic drive. For example, a conductive element 13 electrically connected to the front spring 7 is embedded in the base 1. One end of the conductive element 13 away from the front spring 7 extends from the rear surface of the base 1 or the side wall perpendicular to the rear surface to be connected to an external power source.

[0074] The conductive component 13 and the front spring 7 are connected by a surface-to-surface contact method. After the surface-to-surface contact is established, the connection point is stabilized by electric welding to ensure the reliability of the overall structure in terms of conductivity.

[0075] Preferably, such as Figures 4-7 As shown, corner bosses are provided at the four corners of the front side of the base 1, and the first corner platform 10 is provided on the corresponding corner boss. The conductive element 13 is embedded in the corresponding corner boss.

[0076] The rear spring 8 is connected to the second corner platform 11 of the base 1 and the rear end face of the focusing frame 2. The second corner platform 11 is provided on the corresponding corner boss.

[0077] The first corner platform 10 and the second corner platform 11 are parallel to each other.

[0078] The rear spring 8 and the front spring 7 are parallel to each other to ensure reliable focusing. In this embodiment, the rear spring 8 has at least two pieces and is electrically connected to the focusing coil assembly 20.

[0079] Unlike traditional designs, the rear spring 8 in this embodiment also serves to conduct electricity and provide elastic driving force. In a preferred embodiment, there are four rear springs 8, two of which are connected to the second conductive sheet 15 embedded in the base 1. The second conductive sheet 15 is preferably embedded in the corner boss. However, the conductive member 13 and the second conductive sheet 15 do not contact each other.

[0080] Preferably, such as Figure 4 As shown, the cantilever spring 70 of this embodiment includes a first spring portion 700 connected to the front spring 7 and a second spring portion 701 connected to the first spring portion 701. The second spring portion has a suspension wire fixing groove on the side away from the first spring portion, and the front end of the suspension wire is fixed in the suspension wire fixing groove. The second spring portion is W-shaped and has a W-shaped hole to make the force on the suspension wire more balanced. At the same time, the closed second spring portion enables the focusing frame 2 to stably pull the lens moving frame 3 forward for focusing.

[0081] The four front springs 7 are distributed at the four corners of the focusing frame 2, and the four front springs 7 are independent of each other. The four rear springs 8 are distributed at the four corners of the focusing frame 2, and the four rear springs 8 are independent of each other.

[0082] In addition, in order to achieve closed-loop control, such as Figures 3-5As shown, a circuit board 35 is provided on the rear end face of the lens frame 3. The circuit board 35 is an FPC board or a metal board. The circuit board 35 is electrically connected to the image stabilization coil assembly 30. The suspension wire 4 is a metal wire and is electrically connected to the circuit board 35. During image stabilization, the front spring 7 is connected to an external power source. The power supply to the image stabilization coil assembly is achieved by connecting the front spring 7 to the suspension wire 4, the suspension wire 4 to the circuit board 35, and the circuit board 35 to the image stabilization coil assembly 30.

[0083] Because the lens frame 3 requires image stabilization, a recessed clearance groove 31 is provided on the outer wall of the lens frame 3 to avoid the cantilever spring part 70. A suspension wire through clearance hole 32 communicating with the recessed clearance groove 31 is provided on the rear side of the lens frame 3. A suspension wire positioning hole 33 communicating with the suspension wire through clearance hole 32 is provided on the circuit board 35. The suspension wire 4 passes through the recessed clearance groove 31 and the suspension wire through clearance hole 32, and the rear end of the suspension wire 4 is fixed in the suspension wire positioning hole 33. The two are fixed by welding. Damping adhesive can be applied to the recessed clearance groove 31 and the suspension wire through clearance hole 32 later to protect the suspension wire 4.

[0084] The rear end of the suspension line 4 is fixed to the circuit board 35, which makes the suspension line 4 more stable.

[0085] like Figure 8 As shown, in order to accurately obtain image stabilization and focus data, a detection magnet 34 is provided on the outer wall of the lens frame 3, away from the rear side of the focus frame 2. A detection chip 12 is provided on the base 1, located outside the detection magnet 34. The detection chip 12 is an IC chip. The detection chip 12 is connected to the FPC circuit board 14 fixed on the base 1.

[0086] Specifically, there are four sets of detection magnets 34, which are fixed to the four outer corners of the lens moving frame 3. The outer corners of the lens moving frame 3 are provided with magnet positioning grooves 36, in which detection magnets 34 are provided. The outer surface of the detection magnets 34 is flush with the outer wall of the lens moving frame 3 to prevent interference during focusing and image stabilization.

[0087] Specifically, a mounting slot corresponding to each detection magnet 34 is provided on the rear end face of the base 1. The detection chip 12 can be installed into the mounting slot from the rear end face of the base 1 and connected to the FPC circuit board 14, and perform sensing detection corresponding to the detection magnet 34. The detection chip 12 can be installed after the overall mechanical performance of the drive device has been verified to be correct, avoiding the waste of the detection chip 12 due to structural problems caused after installation.

[0088] Two of the four detection magnets 34 are image stabilization sensing magnets, including an X-axis sensing magnet and a Y-axis sensing magnet. The remaining two detection magnets 34 are Z-axis focusing sensing magnets. Of course, at least one of the two Z-axis focusing sensing magnets 34 is paired with a detection chip 12.

[0089] This detection method in this embodiment can be installed after or before the anti-shake coil group is wound.

[0090] The working principle of this embodiment is as follows:

[0091] During the focusing motion, the second conductive sheet 15 conducts external power, and after the focusing coil group 20 is turned on, it generates a driving force in the optical axis direction with the magnet group 6, so that the focusing frame 2 moves in the optical axis direction for focusing.

[0092] For anti-shake motion, the conductive component 13 conducts external power, which is transmitted to the anti-shake coil group 30 through the front spring 7, suspension wire 4, and circuit board 35. The anti-shake coil group 30 and the magnet group 6 generate X-axis driving force and Y-axis driving force perpendicular to the optical axis plane to meet the anti-shake requirements.

[0093] The above focusing and image stabilization movements can be combined.

[0094] Example 2

[0095] The structure and working principle of this embodiment are basically the same as those of Embodiment 1, except that the structure is different in that: Figure 6 As shown, a magnet group 6 is provided on the front side of the base 1, a focusing coil group 20 is provided on the outer periphery of the focusing frame 2, located on the inner side of the inner surface of the magnet group 6, and an image stabilization coil group 30 is provided on the outer periphery of the lens moving frame 3, located on the inner side of the inner surface of the magnet group 6. The focusing coil group 20 and the image stabilization coil group 30 are distributed at intervals along the optical axis. The fixed position of the magnet group 6 is different from that in Embodiment 1, but it can still meet the usage requirements.

[0096] There are four sets of magnets 6, which are distributed on the four sides of the front side of the base 1.

[0097] Example 3

[0098] like Figure 9 As shown, this embodiment provides a camera module, which includes a lens and a driving device according to Embodiment 1 or Embodiment 2. The lens is mounted in the lens moving frame 3 of the driving device.

[0099] Example 4

[0100] like Figure 10 As shown, this embodiment provides an electronic device, which includes the camera module of Embodiment 3. Electronic devices include, for example, mobile phones and tablets.

[0101] The specific embodiments described herein are merely illustrative of the spirit of the application. Various modifications or changes in the specific embodiments described herein can occur to those skilled in the art to which the application pertains without departing from the spirit of the application, and it is understood that such modifications or changes are to be considered as within the scope of the application as defined by the appended claims.

Claims

1. A drive unit, comprising: Base (1); A focusing frame (2) is connected to the base (1) and the focusing frame (2) moves along the optical axis. The characteristic is that the driving device further includes: Lens moving frame (3), the lens is mounted in the lens moving frame (3) of the driving device; the focusing frame (2) is fitted around the front end of the lens moving frame (3) and the lens moving frame (3) moves on a plane perpendicular to the optical axis; There are several suspension lines (4); the front end of the suspension line (4) is elastically connected to the focusing frame (2), and the rear end of the suspension line (4) is connected to the lens moving frame (3). A housing (5) is fastened to the base (1). A magnet group (6) is provided on the inner wall of the housing (5) or on the front side of the base (1). The front surface (60) of each magnet group (6) extends beyond the front end face (21) of the focusing frame (2). A focusing coil group (20) is provided on the outer periphery of the focusing frame (2) and located on the inner side of the inner surface of the magnet group (6). The focusing coil group (20) is a coil that surrounds the outer periphery of the focusing frame (2). An image stabilization coil group (30) is provided on the outer periphery of the lens moving frame (3) and located on the inner side of the inner surface of the magnet group (6). One set of magnet groups (6) corresponds to one set of image stabilization coil groups (30). The focusing coil group (20) and the image stabilization coil group (30) are distributed in a front-to-back interval along the optical axis. When the focusing frame (2) moves forward to focus, the focusing frame (2) is located at one end of the top surface of the lens moving frame (3). At this time, the focusing frame (2) pulls the lens moving frame (3) forward together.

2. The driving device according to claim 1, characterized in that, The distance between the inner surfaces of the focusing coil group (20) and the magnet group (6) is less than the distance between the inner surfaces of the image stabilization coil group (30) and the magnet group (6).

3. The driving device according to claim 1, characterized in that, The magnet group (6) has four groups and is distributed on the four sides of the front side of the base (1) or the four inner walls of the outer shell (5).

4. The driving device according to claim 3, characterized in that, The image stabilization coil group (30) has four groups.

5. The driving device according to claim 1, 2, or 3, characterized in that, The drive device further includes: The front spring (7) is connected to the front end face of the base (1) and the focusing frame (2), and the front end of the suspension line (4) is connected to the cantilever spring part (70) of the front spring (7) and the rear end of the suspension line (4) passes through the gap between the lens moving frame (3) and the focusing frame and is connected to the rear side of the lens moving frame (3). The rear spring (8) is connected to the rear end face of the base (1) and the focusing frame (2).

6. The driving device according to claim 5, characterized in that, The rear end face of the lens frame (3) is provided with a circuit board (35), the circuit board (35) is electrically connected to the image stabilization coil group (30), and the suspension wire (4) is a metal wire and is electrically connected to the circuit board (35).

7. The driving device according to claim 6, characterized in that, The outer wall of the lens moving frame (3) is provided with an inwardly recessed clearance groove (31) to avoid the cantilever spring part (70). The rear side of the lens moving frame (3) is provided with a suspension wire through clearance hole (32) communicating with the inwardly recessed clearance groove (31). The circuit board (35) is provided with a suspension wire positioning hole (33) communicating with the suspension wire through clearance hole (32). The suspension wire (4) passes through the inwardly recessed clearance groove (31) and the suspension wire through clearance hole (32), and the rear end of the suspension wire (4) is fixed in the suspension wire positioning hole (33).

8. The driving device according to claim 1, characterized in that, The outer wall of the lens moving frame (3) is provided with a detection magnet (34) on the rear side away from the focusing frame (2), and a detection chip (12) corresponding to the detection magnet (34) is provided on the base (1).

9. The driving device according to claim 8, characterized in that, The detection magnet (34) has four sets and is fixed to the four outer corners of the lens moving frame (3). The outer corners of the lens moving frame (3) are provided with magnet positioning grooves, and the detection magnet (34) is provided in the magnet positioning grooves.

10. The driving device according to claim 6, characterized in that, The base (1) is embedded with a conductive element (13) that is electrically connected to the front spring (7).

11. The driving device according to claim 5, characterized in that, The rear spring (8) has at least two pieces, and the rear spring (8) is electrically connected to the focusing coil group (20).

12. A camera module, characterized in that, The camera module includes the driving device as described in any one of claims 1-11.

13. An electronic device, characterized in that, The electronic device includes the camera module as described in claim 12.

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