CN115314639A

CN115314639A - Sensor driving device, camera module and mobile terminal

Info

Publication number: CN115314639A
Application number: CN202211001128.0A
Authority: CN
Inventors: 龚高峰; 王建华; 唐利新
Original assignee: Shanghai BL Electronics Co Ltd
Current assignee: Shanghai BL Electronics Co Ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2022-11-08

Abstract

The invention provides a sensor driving device, a camera module and a mobile terminal. The sensor driving device includes: a magnet holder; the conductive suspension plate assembly is provided with a fixed part and a movable part, the magnet support is covered on the fixed part and forms an accommodating space with the fixed part, the movable part is positioned in the accommodating space and connected with the fixed part, at least one part of the movable part can move relative to the fixed part, and the movable part is provided with an installation position for installing a sensor; the movable base is arranged in the accommodating space, is electrically connected with the conductive suspension plate assembly and is arranged on the movable part; a plurality of driving magnets which are arranged at intervals around the circumference of the magnet bracket; and the driving coils are arranged on the moving base corresponding to the driving magnets respectively and are electrically connected with the moving base. The invention solves the problem of poor use performance of the sensor driving device in the prior art.

Description

Sensor driving device, camera module and mobile terminal

Technical Field

The invention relates to the field of camera devices, in particular to a sensor driving device, a camera module and a mobile terminal.

Background

At present, OIS optical anti-shake schemes for camera shooting and anti-shake of mobile phones are realized by correcting angles through driving a lens by a VCM motor, however, the schemes have the defects of large power consumption, limited anti-shake effect, large product volume, high unit price and the like for a long time. With the more and more abundant scenes that the mobile phone shoots, the anti-shaking requirements are more and more, that is to say, the shooting effect of the smart phone in the scene of motion photography is inevitably improved. In addition, the control of terminal brands on the product cost of parts is also more and more severe, and the OIS cannot be popularized in some flat-price mobile phones due to the high cost. Finally, the VCM motor (voice coil motor) with OIS function has a large product volume, which is contrary to the requirement of terminal brand for light and thin overall appearance, and the Sensor-Shift technology can just avoid the problem. However, the Sensor-Shift technology is not only added with some more precise parts, but also has a more complex assembly process compared with the conventional technology, and on the premise that the market is increasingly pursuing lightness and thinness and the structure of the camera module is simple, it is very important how to provide stable support for the image Sensor and not interfere with the anti-shake motion of the image Sensor.

Therefore, the sensor driving device in the prior art has the problem of poor service performance.

Disclosure of Invention

The invention mainly aims to provide a sensor driving device, a camera module and a mobile terminal, and aims to solve the problem that the sensor driving device in the prior art is poor in service performance.

In order to achieve the above object, according to one aspect of the present invention, there is provided a sensor driving device including: a magnet holder; the conductive suspension plate assembly is provided with a fixed part and a movable part, the magnet support is covered on the fixed part and forms an accommodating space with the fixed part, the movable part is positioned in the accommodating space and connected with the fixed part, at least one part of the movable part can move relative to the fixed part, and the movable part is provided with an installation position for installing a sensor; the movable base is arranged in the accommodating space, is electrically connected with the conductive suspension plate assembly and is arranged on the movable part; a plurality of driving magnets which are arranged at intervals around the circumference of the magnet bracket; and the driving coils are arranged on the moving base corresponding to the driving magnets respectively and are electrically connected with the moving base.

Furthermore, an avoiding gap is formed between the magnet support and the movable base.

Further, electrically conductive suspension board subassembly includes the FPC board, and the FPC board has fixed part and movable part and sets up the connecting portion of keeping away from movable part one side at the fixed part, and the FPC board still has a plurality of elastic arms, and the one end and the fixed part of elastic arm are connected, and the other end and the movable part of elastic arm are connected.

Furthermore, at least one side of the fixed part, the movable part and the elastic arm, which is far away from the movable base, is provided with a metal hard layer.

Furthermore, one group of opposite side edges of the movable part are respectively provided with a first connecting bulge extending towards the fixing part, the side edge of the fixing part corresponding to the other group of opposite side edges of the movable part is provided with a second connecting bulge, and the adjacent first connecting bulge and the second connecting bulge are connected through an elastic arm.

Further, the conductive hanger plate assembly further comprises: the bottom plate is arranged on one side of the fixed part, which is far away from the movable base; the prepressing plate is of an annular structure formed by enclosing a plurality of pressing strips, the prepressing plate is arranged between the bottom plate and the fixing part, and the pressing strips are respectively and correspondingly arranged on the periphery of the fixing part.

Furthermore, the conductive suspension plate assembly also comprises a reinforcing plate, the reinforcing plate is arranged on one side of the movable part far away from the movable base, one side of the reinforcing plate far away from the movable part is provided with a plurality of supporting bulges, and the supporting bulges are respectively abutted with the bottom plate; or one side of the reinforcing plate, which is far away from the movable part, is provided with a plurality of ball grooves, the conductive suspension plate assembly further comprises a plurality of balls, at least one ball is arranged in each ball groove respectively, and the plurality of balls are abutted to the bottom plate respectively.

Furthermore, one side of the moving base facing the movable part is provided with a plurality of adsorption magnets matched with the bottom plate, and the adsorption magnets and the driving coils are respectively positioned on two sides of the moving base.

Furthermore, a group of opposite sides of the movable base are respectively provided with an adsorption magnet, two ends of one side are respectively provided with an adsorption magnet, and the center of the other side is provided with an adsorption magnet.

Furthermore, the edge of one side of the movable base, which is far away from the movable part, is provided with a plurality of positioning bulges, and different drive coils are sleeved on different positioning bulges.

Further, the sensor driving device further includes a plurality of position detecting members, different ones of which are disposed between different ones of the driving coils and the positioning projections.

Furthermore, each corner part of the movable part far away from one side of the movable part of the movable base is provided with at least one limiting column respectively, the magnet support is provided with a limiting hole matched with the limiting column, and a movement gap is formed between the limiting column and the limiting hole.

Furthermore, damping glue is filled in the movement gap.

Furthermore, the top end of the magnet support is provided with an avoiding opening, the periphery of the avoiding opening is provided with an installation convex edge, and the plurality of driving magnets are respectively arranged on the installation convex edge.

Further, the extending direction of the mounting convex edge is parallel to the plane of the mounting position.

Furthermore, the installation chimb is four, and four two liang of installation chimbs set up relatively, and wherein two installation chimbs extend along X axle direction respectively, and two other installation chimbs extend along Y axle direction respectively, are provided with a magnet group on every installation chimb respectively, and every magnet group has at least one drive magnetite.

Furthermore, the magnet groups on the two oppositely arranged mounting convex edges are oppositely arranged, one of the magnet groups is provided with two driving magnets, and a mounting gap for avoiding the adsorption magnets is arranged between the two driving magnets.

Further, at least one installation chimb has the installation opening that is used for installing the drive magnetite, and the one side that removes the base is kept away from to installation opening's edge has at least one spacing arch, and the drive magnetite holding is in the installation opening and with spacing protruding butt.

Furthermore, the sensor driving device is also provided with a shielding cover, the shielding cover covers the magnet support and is connected with the bottom plate of the conductive suspension plate assembly, and the shielding cover is provided with an installation clamping groove matched with the limiting protrusion.

According to another aspect of the present invention, a camera module is provided, which includes the sensor driving device.

According to another aspect of the present invention, a mobile terminal is provided, which includes the camera module.

By applying the technical scheme of the invention, the sensor driving device comprises a magnet bracket, a conductive suspension plate assembly, a movable base, a driving magnet and a driving coil. The conductive suspension plate component is provided with a fixed part and a movable part, the magnet support is covered on the fixed part and forms an accommodating space with the fixed part, the movable part is positioned in the accommodating space and is connected with the fixed part, at least one part of the movable part can move relative to the fixed part, and the movable part is provided with an installation position for installing a sensor; the movable base is arranged in the accommodating space, is electrically connected with the conductive suspension plate component and is arranged on the movable part; the plurality of driving magnets are arranged at intervals around the circumferential direction of the magnet support; the plurality of driving coils are respectively arranged on the movable base corresponding to the plurality of driving magnets and are electrically connected with the movable base.

When the sensor driving device in the application is used, the conductive suspension plate assembly is provided with the movable part and the fixed part, the magnet support is arranged on the fixed part and the magnet support, the driving magnet is arranged on the movable part and the driving coil is arranged on the movable base, and therefore when the driving coil is electrified through the movable base, the driving coil can be induced by the driving magnet, the movable base can move in an XY plane under the action of induction force generated by the driving magnet and the driving coil, and the movable base can drive the movable part to move relative to the fixed part. Simultaneously, because the movable part has the installation position that is used for installing the sensor, consequently when the sensor is installed on the movable part, the movable part can drive the sensor and move in the XY plane to can realize the anti-shake function of the module of making a video recording through the motion of sensor in the XY plane. Therefore, the sensor driving device effectively solves the problem that the sensor driving device in the prior art is poor in service performance.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of a sensor driving apparatus according to an embodiment of the present invention;

FIG. 2 shows an exploded view of the sensor drive arrangement of FIG. 1;

fig. 3 is a schematic view showing a positional relationship between a magnet holder and a shield case of the sensor driving device in fig. 1;

fig. 4 is a schematic view showing a positional relationship between a magnet holder and a driving magnet of the sensor driving device in fig. 1;

FIG. 5 is a schematic view showing a structure of a magnet holder of the sensor driving device in FIG. 1;

fig. 6 is a schematic view showing a positional relationship between a moving base and a driving coil of the sensor driving device in fig. 1;

fig. 7 is a schematic view showing a positional relationship between a moving base and a conductive suspension plate assembly of the sensor driving apparatus of fig. 1;

fig. 8 is a schematic view showing a structure of an FPC board of a conductive suspension board assembly of the sensor driving device in fig. 1;

fig. 9 is a schematic view showing a positional relationship between an FPC board and a metal hard layer of a conductive suspension board assembly of the sensor driving device in fig. 1;

fig. 10 is a schematic view showing a positional relationship among the FPC board, the metal hard layer, and the reinforcing board of the conductive suspension board assembly of the sensor driving device in fig. 1.

Wherein the figures include the following reference numerals:

10. a magnet holder; 11. a limiting hole; 12. avoiding the opening; 13. installing a convex edge; 131. an installation opening; 132. a limiting bulge; 20. a conductive suspension plate assembly; 21. a fixed part; 211. a second connecting projection; 22. a movable portion; 221. a first connecting projection; 23. an FPC board; 24. a connecting portion; 25. a resilient arm; 26. a hard metal layer; 27. a reinforcing plate; 271. a support boss; 28. a base plate; 29. pre-pressing a plate; 30. moving the base; 31. adsorbing a magnet; 32. positioning the projection; 33. a limiting post; 331. damping glue; 40. a drive magnet; 50. a drive coil; 60. a position detection component; 70. a shield case; 80. and a dust cover.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is to be noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless stated to the contrary, the use of directional terms such as "upper, lower, top, bottom" or the like, generally refers to the orientation of the components as shown in the drawings, or to the vertical, perpendicular, or gravitational orientation of the components themselves; likewise, for ease of understanding and description, "inner and outer" refer to inner and outer relative to the profile of the components themselves, but the above directional terms are not intended to limit the invention.

In order to solve the poor problem of sensor drive arrangement performance among the prior art, this application provides a sensor drive arrangement, module and mobile terminal make a video recording.

Moreover, the mobile terminal in the application is provided with a camera module. Meanwhile, the camera module has the following sensor driving device.

It should be noted that, the mobile terminal in the present application generally refers to a mobile phone or a notebook computer with photographing and shooting functions.

As shown in fig. 1 to 10, the sensor driving device in the present application includes a magnet holder 10, a conductive suspension plate assembly 20, a moving base 30, a driving magnet 40, and a driving coil 50. The conductive suspension plate assembly 20 is provided with a fixed part 21 and a movable part 22, the magnet support 10 covers the fixed part 21 and encloses an accommodating space with the fixed part 21, the movable part 22 is positioned in the accommodating space and connected with the fixed part 21, at least one part of the movable part 22 can move relative to the fixed part 21, and the movable part 22 is provided with a mounting position for mounting a sensor; the movable base 30 is arranged in the accommodating space, the movable base 30 is electrically connected with the conductive suspension plate assembly 20, and the movable base 30 is arranged on the movable part 22; a plurality of drive magnets 40, the plurality of drive magnets 40 being provided at intervals around the circumferential direction of the magnet holder 10; the plurality of driving coils 50 are provided on the moving base 30 corresponding to the plurality of driving magnets 40, and the plurality of driving coils 50 are electrically connected to the moving base 30.

When the sensor driving device in the present application is used, the conductive suspension plate assembly 20 has the movable portion 22 and the fixed portion 21, the magnet holder 10 is disposed on the fixed portion 21 and the magnet holder 10 is provided with the driving magnet 40, the moving base 30 is disposed on the movable portion 22 and the moving base 30 is provided with the driving coil 50, so that after the driving coil 50 is energized through the moving base 30, the driving coil can be induced with the driving magnet 40, the moving base 30 can move in the XY plane under the action of the induction force generated by the driving magnet 40 and the driving coil 50, and the moving base 30 can drive the movable portion 22 to move relative to the fixed portion 21. Meanwhile, since the movable portion 22 has the mounting position for mounting the sensor, when the sensor is mounted on the movable portion 22, the movable portion 22 can drive the sensor to move in the XY plane, so that the anti-shake function of the camera module can be realized through the movement of the sensor in the XY plane. Therefore, the sensor driving device effectively solves the problem that the sensor driving device in the prior art is poor in service performance.

In one embodiment of the present application, the projection plane of the movable base 30 on the XY plane is larger than the projection area of the movable portion 22, or the periphery of the movable base 30 is located above the fixed portion 21, but it should be noted that the movable base 30 is not in contact with the fixed portion 21 and has a gap with the fixed portion 21.

It should be noted that the sensor in the present application is generally referred to as an image sensor. And the plane on which the mount is located may be an XY plane.

Specifically, a clearance is provided between the magnet holder 10 and the movable base 30. Through setting up like this, can guarantee to remove base 30 when the effect of drive magnetite 40 and drive coil 50 moves down, remove base 30's circumference lateral wall can not produce the collision with magnetite support 10 to sensor drive arrangement's stability has been guaranteed effectively, and then the image of guaranteeing the module of making a video recording and shooting is more clear.

Specifically, the conductive suspension board assembly 20 includes an FPC board 23, the FPC board 23 has a fixed portion 21 and a movable portion 22 and a connecting portion 24 provided on a side of the fixed portion 21 away from the movable portion 22, the FPC board 23 further has a plurality of elastic arms 25, one end of the elastic arm 25 is connected to the fixed portion 21, and the other end of the elastic arm 25 is connected to the movable portion 22. At least one of the fixed portion 21, the movable portion 22, and the elastic arm 25 has a metal hard layer 26 on a side away from the movable base 30. In the present application, the connection portion 24 is used for electrical connection with another structure in the image pickup module.

In one embodiment of the present application, the conductive suspension board assembly 20 further includes a metal elastic sheet, and the metal elastic sheet is disposed on a side of the FPC board 23 away from the moving base 30, and the metal elastic sheet in this embodiment is the fixed portion 21, the movable portion 22, and the metal hard layer 26 of the elastic arm 25. That is, the fixed portion 21, the movable portion 22, and the metal hard layer 26 of the elastic arm 25 may be an integral structure in the present application. Of course, the metal dome and the FPC board 23 may be an integrally molded structure in the present application.

Specifically, one set of opposite sides of the movable portion 22 has first coupling protrusions 221 extending toward the fixed portion 21, respectively, and the other set of opposite sides of the movable portion 22 has second coupling protrusions 211 corresponding to the sides of the fixed portion 21, and the adjacent first coupling protrusions 221 and second coupling protrusions 211 are coupled by the elastic arms 25. Preferably, the first coupling protrusion 221 and the second coupling protrusion 211 are respectively disposed at the middle position of the side edges in the present application.

Optionally, the conductive suspension plate assembly 20 further includes a reinforcing plate 27, and the reinforcing plate 27 is disposed on a side of the movable portion 22 away from the movable base 30.

In one particular embodiment of the present application, the conductive suspension plate assembly 20 further includes a base plate 28 and a pre-press plate 29. The bottom plate 28 is arranged on one side of the fixed part 21 far away from the movable base 30; the pre-pressing plate 29 is a ring-shaped structure surrounded by a plurality of pressing strips, the pre-pressing plate 29 is arranged between the bottom plate 28 and the fixing part 21, and the plurality of pressing strips are respectively and correspondingly arranged on the periphery of the fixing part 21. In the present embodiment, the pre-press plate 29 has a polygonal structure. The reinforcing plate 27 has a plurality of supporting projections 271 on the side away from the movable portion 22, and the plurality of supporting projections 271 are respectively abutted against the bottom plate 28.

The reinforcing plate 27 is made of a non-magnetic stainless material in the present application, and the reinforcing plate 27 serves to enhance the structural stability of the FPC board 23, so that the stability of the sensor driving device can be ensured.

Specifically, the moving base 30 has a plurality of absorption magnets 31 engaged with the bottom plate 28 on a side thereof facing the movable section 22, and the absorption magnets 31 and the driving coil 50 are respectively located on both sides of the moving base 30.

Preferably, the absorption magnets 31 are respectively disposed on a pair of opposite sides of the moving base 30, wherein one absorption magnet 31 is disposed at each end of one side, and one absorption magnet 31 is disposed at the center of the other side. That is, the total number of the absorption magnets 31 is three in the present embodiment.

In another embodiment of the present application, the side of the reinforcing plate 27 away from the movable portion 22 has a plurality of ball grooves, and the conductive suspension plate assembly 20 further includes a plurality of balls, each of the ball grooves has at least one ball disposed therein, and the plurality of balls are abutted against the bottom plate 28.

It should be noted that, in the present application, the supporting protrusions 271 and the balls are provided to support the movable portion 22 through the reinforcing plate 27, so as to ensure the space between the movable portion 22 and the bottom plate 28. Moreover, since the moving base 30 has the absorption magnet 31 on the side facing the bottom plate 28, and the absorption magnet 31 can generate an acting force with the bottom plate 28, it can pre-press the movable portion 22, so as to ensure that the movable portion 22 will not move in the Z-axis direction when the movable portion 22 moves in the XY plane under the action of the driving magnets 40 and the driving coils 50. Of course, in the present application, the preload of the movable portion 22 can also be adjusted by providing the preload plate 29 between the fixed portion 21 and the bottom plate 28. Furthermore, by using the prepressing plates 29 having different thicknesses, the amount of deformation of the elastic arms 25 can be adjusted, and the preload of the movable portion 22 can be adjusted.

Optionally, the edge of the side of the movable base 30 away from the movable portion 22 has a plurality of positioning protrusions 32, and different driving coils 50 are sleeved on different positioning protrusions 32. Also, the sensor driving device further includes a plurality of position detecting members 60, and different position detecting members 60 are disposed between different ones of the driving coils 50 and the positioning projections 32.

In an embodiment of the present application, the position detecting assembly 60 may be a position sensor or a hall chip, and when the hall chip is disposed, at least two of the hall chips can detect the movement of the movable portion 22 in the X-axis direction and the Y-axis direction, respectively, so as to implement closed-loop detection of the image sensor driving apparatus, or change the energization amount of the corresponding driving coil 50 according to the detection result of the hall chip.

In one embodiment of the present application, a circuit connector is embedded inside the moving base 30, and the driving coil 50 and the hall chip are electrically connected to the FPC board 23 through the circuit connector.

Preferably, each corner of the moving base 30 on the side away from the movable portion 22 is provided with at least one limiting column 33, the magnet holder 10 has a limiting hole 11 matched with the limiting column 33, and a movement gap is formed between the limiting column 33 and the limiting hole 11. In the present application, one end of the limiting column 33 is located in the corresponding limiting hole 11, and by such arrangement, when the moving base 30 moves along the X axis or the Y axis under the action of the driving magnet 40 and the driving coil 50, the moving distance of the moving base 30 is limited by the limiting effect of the limiting hole 11 on the limiting column 33. Meanwhile, since the movement gap is formed between the limiting hole 11 and the limiting post 33, when the driving magnet 40 and the driving coil 50 interact with each other and the movable portion 22 is driven to move by the moving base 30, the anti-shake adjustment of the image sensor is not affected. Moreover, the sensor driving device of the present application further includes a plurality of dust caps 80, and the dust caps 80 are covered on one side of the limiting hole 11 away from the movable base 30.

Optionally, the motion gap is filled with damping glue 331. The damping rubber 331 is filled to play a role in damping in the movement process of the mobile base 30, so that the anti-shake effect of the sensor driving device is ensured. In one embodiment of the present application, the damping paste 331 is coated around the stopper post 33.

Specifically, the magnet holder 10 has a bypass opening 12 at the top end thereof, a mounting flange 13 at the periphery of the bypass opening 12, and a plurality of drive magnets 40 are respectively provided on the mounting flange 13. That is, in the present application, the edge of the magnet holder 10 at the tip end in the Z-axis direction has the mounting flange 13 extending inward to provide a mounting position for the drive magnet 40, thereby ensuring the stability of the drive magnet 40. Also, in the present embodiment, the stopper hole is provided on the mounting flange 13.

In one embodiment of the present application, the drive magnet 40, the drive coil 50, and the image sensor are parallel to each other.

Preferably, the mounting flange 13 extends in a direction parallel to the plane of the mounting site. By such an arrangement, the stability of the drive magnet 40 can be further effectively ensured, and the usability of the sensor drive device can be ensured.

Specifically, installation chimb 13 is four, and four two double-phase opposite settings of installation chimb 13, wherein two installation chimbs 13 extend along the X axle direction respectively, and two other installation chimbs 13 extend along the Y axle direction respectively, are provided with a magnetite group on every installation chimb 13 respectively, and every magnetite group has at least one drive magnetite 40. The magnet groups on the two oppositely arranged mounting flanges 13 are oppositely arranged, one of the magnet groups is provided with two driving magnets 40, and a mounting gap for avoiding the absorption magnet 31 is arranged between the two driving magnets 40. In one embodiment of the present application, each of the mounting flanges 13 has one magnet group, and three of the four magnet groups have only one drive magnet 40, and the other magnet group has two drive magnets 40, but the two drive magnets 40 have a smaller volume than the other drive magnets 40. Preferably, the sum of the volumes of the driver magnets 40 of each magnet group is equal. And, two of the oppositely disposed magnet groups induce with the corresponding drive coils 50 and generate a driving force in the X-axis direction, and the other two oppositely disposed magnet groups induce with the corresponding drive coils 50 and generate a driving force in the Y-axis direction. And, two of them have one drive magnet 40 separately and two drive magnets 40 in the magnet group set up relatively connect the line parallel to X axle or Y axle.

Optionally, at least one of the mounting flanges 13 has a mounting opening 131 for mounting the driving magnet 40, and a side of an edge of the mounting opening 131 away from the moving base 30 has at least one limiting protrusion 132, and the driving magnet 40 is accommodated in the mounting opening 131 and abuts against the limiting protrusion 132. The sensor driving device further includes a shield cover 70, the shield cover 70 covers the magnet holder 10 and is connected to the bottom plate 28 of the conductive suspension plate assembly 20, and the shield cover 70 has an installation slot engaged with the limit protrusion 132. Also, in one embodiment of the present application, the shield 70 is welded to the bottom plate 28 at the corners thereof.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

1. the problem that the sensor driving device in the prior art is poor in service performance is effectively solved;

2. simple structure and stable performance.

It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sensor driving device, characterized by comprising:

a magnet holder (10);

the conductive suspension plate component (20), the conductive suspension plate component (20) is provided with a fixed part (21) and a movable part (22), the magnet support (10) covers the fixed part (21) and forms an accommodating space with the fixed part (21), the movable part (22) is located in the accommodating space and connected with the fixed part (21), at least one part of the movable part (22) can move relative to the fixed part (21), and the movable part (22) is provided with a mounting position for mounting a sensor;

a movable base (30), wherein the movable base (30) is arranged in the accommodating space, the movable base (30) is electrically connected with the conductive suspension plate component (20), and the movable base (30) is arranged on the movable part (22);

a plurality of drive magnets (40), wherein the plurality of drive magnets (40) are arranged around the magnet support (10) at intervals in the circumferential direction;

and a plurality of drive coils (50), wherein the drive coils (50) are arranged on the moving base (30) corresponding to the drive magnets (40) respectively and are electrically connected with the moving base (30).

2. The sensor driving device according to claim 1, wherein an escape gap is provided between the magnet holder (10) and the moving base (30).

3. The sensor driving device according to claim 1, wherein the conductive suspension board assembly (20) includes an FPC board (23), the FPC board (23) having the fixed portion (21) and the movable portion (22) and a connecting portion (24) provided on a side of the fixed portion (21) away from the movable portion (22), the FPC board (23) further having a plurality of elastic arms (25), one ends of the elastic arms (25) being connected to the fixed portion (21), the other ends of the elastic arms (25) being connected to the movable portion (22).

4. The sensor drive according to claim 3, characterized in that at least one of the fixed part (21), the movable part (22), the resilient arm (25) has a metal stiff layer (26) on the side remote from the mobile base (30).

5. A sensor driving device according to claim 3, wherein one set of opposite sides of the movable portion (22) has first coupling projections (221) extending toward the fixing portion (21), respectively, and the other set of opposite sides of the movable portion (22) has second coupling projections (211) corresponding to the sides of the fixing portion (21), and the adjacent first coupling projections (221) and second coupling projections (211) are coupled by the elastic arm (25).

6. The sensor driving apparatus according to claim 1, wherein the conductive hanger plate assembly (20) further comprises:

a bottom plate (28), wherein the bottom plate (28) is arranged on one side of the fixing part (21) far away from the movable base (30);

the prepressing plate (29) is of an annular structure formed by surrounding a plurality of pressing strips, the prepressing plate (29) is arranged between the bottom plate (28) and the fixing part (21), and the pressing strips are correspondingly arranged on the periphery of the fixing part (21) respectively.

7. The sensor drive device according to claim 6, wherein the conductive suspension plate assembly (20) further includes a reinforcing plate (27), the reinforcing plate (27) being provided on a side of the movable portion (22) away from the moving base (30),

the side of the reinforcing plate (27) far away from the movable part (22) is provided with a plurality of supporting bulges (271), and the supporting bulges (271) are respectively abutted with the bottom plate (28); or

The side, far away from the movable part (22), of the reinforcing plate (27) is provided with a plurality of ball grooves, the conductive suspension plate assembly (20) further comprises a plurality of balls, at least one ball is arranged in each ball groove, and the plurality of balls are abutted to the bottom plate (28) respectively.

8. The sensor driving device according to claim 6, wherein the moving base (30) has a plurality of attracting magnets (31) engaged with the bottom plate (28) on a side facing the movable portion (22), and the attracting magnets (31) and the driving coils (50) are respectively located on both sides of the moving base (30).

9. The sensor driving device according to claim 8, wherein the absorption magnets (31) are provided on a pair of opposite sides of the moving base (30), one of the absorption magnets (31) is provided at each of both ends of one side, and one of the absorption magnets (31) is provided at the center of the other side.

10. The sensor driving device according to claim 1, wherein an edge of a side of the moving base (30) away from the movable portion (22) has a plurality of positioning projections (32), and different ones of the driving coils (50) are fitted over different ones of the positioning projections (32).

11. The sensor driving device according to claim 10, further comprising a plurality of position detecting assemblies (60), different ones of the position detecting assemblies (60) being disposed between different ones of the driving coils (50) and the positioning projections (32).

12. The sensor driving device according to claim 1, wherein at least one limiting post (33) is disposed at each corner of the moving base (30) on a side away from the movable portion (22), the magnet holder (10) has a limiting hole (11) engaged with the limiting post (33), and a movement gap is provided between the limiting post (33) and the limiting hole (11).

13. The sensor driving device according to claim 12, wherein the movement gap is filled with a damping paste (331).

14. The sensor driving device according to any one of claims 1 to 13, wherein the magnet holder (10) has an escape opening (12) at a top end thereof, a mounting flange (13) is provided at a peripheral edge of the escape opening (12), and the plurality of driving magnets (40) are respectively provided on the mounting flange (13).

15. The sensor driving device according to claim 14, wherein the mounting flange (13) extends in a direction parallel to a plane in which the mounting site is located.

16. The sensor driving device according to claim 14, wherein the number of the mounting flanges (13) is four, four of the mounting flanges (13) are arranged opposite to each other two by two, two of the mounting flanges (13) extend along the X-axis direction respectively, the other two mounting flanges (13) extend along the Y-axis direction respectively, each mounting flange (13) is provided with a magnet group, and each magnet group has at least one of the driving magnets (40).

17. The sensor driving device according to claim 16, wherein the magnet groups of the two oppositely disposed mounting flanges (13) are oppositely disposed, and one of the magnet groups has two of the driving magnets (40), and a mounting gap for avoiding the attracting magnet (31) is provided between the two driving magnets (40).

18. The sensor driving device according to claim 14, wherein at least one of the mounting flanges (13) has a mounting opening (131) for mounting the driving magnet (40), and a side of an edge of the mounting opening (131) away from the moving base (30) has at least one stopper protrusion (132), and the driving magnet (40) is accommodated in the mounting opening (131) and abuts against the stopper protrusion (132).

19. The sensor driving device according to claim 18, further comprising a shield cover (70), wherein the shield cover (70) covers the magnet holder (10) and is connected to the bottom plate (28) of the conductive suspension plate assembly (20), and the shield cover (70) has a mounting groove for engaging with the limiting protrusion (132).

20. A camera module comprising the sensor driving device according to any one of claims 1 to 19.

21. A mobile terminal characterized by comprising the camera module of claim 20.