Anti-shake mechanism and camera module

Abstract

The present application provides an anti-shake mechanism and a camera module. The anti-shake mechanism comprises an anti-shake circuit board and a flexible piece arranged on the outer side of the anti-shake circuit board, the anti-shake circuit board partially overlaps the flexible piece, and the flexible piece is of an asymmetric structure; the flexible piece comprises a first main body and a first bent edge; the anti-shake circuit board comprises a second main body, a second bent edge, and an electrical connection portion; the second bent edge is arranged corresponding to part of the first bent edge, a stiffness compensation structure is provided on the region of the first bent edge not connected to the second bent edge, and the connection regions of the first bent edge and the second bent edge are at least partially in contact with each other. In the anti-shake mechanism of the present application, the structures of the anti-shake circuit board and the flexible piece are optimized, improving the overall structural stability of the anti-shake mechanism, reducing production costs, and improving optical anti-shake performance.

Description

Anti-shake mechanism and camera module Technical Field

[0001] The present application relates to the field of optical imaging technology, and in particular to an anti-shake mechanism and a camera module. Background Art

[0002] The camera module of the prior art assists the user in obtaining clear images through an anti-shake mechanism. The physical driving methods of the camera module generally include shrapnel type, ball type and memory alloy type. However, the anti-shake mechanism of the prior art includes an anti-shake circuit board and a flexible connecting board; wherein, the active edge of the anti-shake circuit board is generally formed by stacking multiple layers of boards, and the active edge of the flexible connecting board is mostly formed by an etching process, which makes the production cost of the anti-shake mechanism high and the overall structural rigidity is poor, which is easily affected by traction hardness, resulting in poor overall stability of the camera module, thereby reducing the adjustment accuracy of the camera module.

[0003] Therefore, it is necessary to provide an anti-shake mechanism and a camera module with good structural stability, low production cost and good optical anti-shake performance. Technical issues

[0004] The purpose of this application is to provide an anti-shake mechanism and a camera module; the anti-shake mechanism has good overall structural stability, low production cost, and good optical anti-shake performance. Technical Solutions

[0005] The technical solution of this application is as follows:

[0006] In the first aspect, the present application provides an anti-shake mechanism, including an anti-shake circuit board and a flexible sheet arranged on the outside of the anti-shake circuit board, the anti-shake circuit board and the flexible sheet are partially overlapped, and the flexible sheet is an asymmetric structure; the flexible sheet includes a first main body and a first bent edge arranged along the circumference of the first main body, and the first bent edge is arranged perpendicular to the plane of the first main body; the anti-shake circuit board includes a second main body, a second bent edge arranged along the circumference of the second main body, and an electrical connection portion arranged on the second bent edge; the second bent edge is arranged corresponding to part of the first bent edge, and a stiffness compensation structure is provided on the area where the first bent edge is not connected to the second bent edge, and the connection area between the first bent edge and the second bent edge is at least partially fitted.

[0007] Preferably, a gap is provided between the connection areas of the first bending edge and the second bending edge, and the gap is at least partially filled with a flexible connection structure.

[0008] Preferably, the gap is completely filled with the flexible connection structure; or, a plurality of flexible connection structures are arranged at intervals in the gap, and the flexible connection structures are evenly distributed in the gap.

[0009] Preferably, the flexible sheet also includes a first connecting block, which is symmetrically arranged on both sides of the first main body and connected to the first bending edge; the anti-shake circuit board also includes a second connecting block, which is symmetrically arranged on both sides of the second main body and connected to the second bending edge; the first connecting block and the second connecting block are arranged correspondingly.

[0010] Preferably, the first connecting block includes a first connecting portion connected to the first main body and a second connecting portion connected to the first bending edge; the second connecting portions are symmetrically arranged on both sides of the first connecting portion, separating the first bending edge into a first section and a second section, and a first notch is formed between the first section and the second section; the second bending edge is connected to the first section, and a second notch is provided on the area of ​​the first section corresponding to the electrical connecting portion, and a third notch is provided on the area of ​​the second section corresponding to the second notch.

[0011] Preferably, the stiffness compensation structure is provided in a region of the first main body away from the second bending edge, or is provided on the second section.

[0012] Preferably, the stiffness compensation structure is a first thickening structure provided on the inner side and / or outer side of the second section; or, the stiffness compensation structure is a heightened structure provided on the upper surface and / or lower surface of the second section; or, the stiffness supplement structure is a second thickening structure provided on the lower surface of the first body in an area away from the second bending edge.

[0013] Preferably, the end of the second notch extends outward to form a third bent edge arranged parallel to the first main body, the third bent edges are connected by a first connecting piece, and the electrical connection part is connected above the first connecting piece; the end at the third notch extends outward to form a fourth bent edge arranged parallel to the first main body, and the fourth bent edges are connected by a second connecting piece.

[0014] Preferably, the anti-shake mechanism also includes an anti-shake bracket, a base plate, an anti-shake coil, an anti-shake magnet and a shell. The anti-shake bracket is arranged in the area surrounded by the anti-shake circuit board and the flexible sheet. The flexible sheet is carried on the base plate. The anti-shake coil is distributed around the anti-shake bracket. The anti-shake magnet is correspondingly arranged above the anti-shake coil. The shell and the base plate together form a accommodating space for accommodating the anti-shake circuit board, flexible sheet, anti-shake bracket, anti-shake coil and anti-shake magnet.

[0015] Preferably, a gasket is provided between the base plate and the flexible sheet, the flexible sheet is connected to the gasket, and the anti-shake bracket is connected to the anti-shake circuit board; the anti-shake bracket includes a connecting ring arranged in a square shape, a first connecting arm arranged in the corner area of ​​the connecting ring, and a second connecting arm symmetrically arranged on both sides of the connecting ring; the second connecting arm is arranged through the first notch; the second connecting arm is provided with a connecting ear connected to the inner wall of the first bending edge and the second bending edge; the gasket is respectively connected to the bottom of the first connecting piece and the second connecting piece.

[0016] In a second aspect, the present application provides a camera module, which includes the anti-shake mechanism and the image sensor component as described above, and the image sensor component is arranged in the area surrounded by the anti-shake circuit board and the anti-shake bracket. Beneficial effects

[0017] The beneficial effects of this application are:

[0018] The anti-shake mechanism described in this application includes an anti-shake circuit board and the flexible sheet. The anti-shake circuit board and the flexible sheet are partially overlapped, reducing the volume of the anti-shake circuit board. The flexible sheet is then configured as an asymmetric structure to supplement the overall structure. By optimizing the structures of the anti-shake circuit board and the flexible sheet, the electrical connection of the anti-shake circuit board is ensured while adjusting and optimizing the optical image stabilization performance.

[0019] The first bent edge and the second bent edge are respectively arranged perpendicularly relative to the plane folds of the first body and the second body. The first bent edge and the second bent edge adopt a three-dimensional folding structure, which saves the etching process, simplifies the part preparation process, improves assembly efficiency, and reduces production costs. At the same time, the bending structure of the edges of the flexible sheet and the anti-shake circuit board meets the stiffness requirements in the x-direction, y-direction and z-direction, ensuring that the z-axis has a stable support function while ensuring the anti-shake stability in the x-direction and y-direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a schematic structural diagram of the anti-shake mechanism of the present application;

[0021] FIG2 is an exploded view of the anti-shake mechanism of the present application;

[0022] FIG3 is a cross-sectional schematic diagram of the anti-shake mechanism of the present application;

[0023] FIG4 is a schematic diagram of the connection structure between the anti-shake circuit board and the flexible sheet;

[0024] FIG5 is an enlarged schematic diagram of point A in FIG4 ;

[0025] FIG6 is a schematic structural diagram of a flexible sheet;

[0026] FIG7 is a schematic diagram of the structure of an anti-shake circuit board;

[0027] FIG8 is a schematic diagram of the internal structure of the anti-shake mechanism of the present application.

[0028] Among them, 1-anti-shake circuit board, 11-second main body, 12-second bending edge, 13-electrical connection part, 14-second connecting block, 2-flexible sheet, 21-first main body, 22-first bending edge, 221-first section, 222-second section, 223-first notch, 224-second notch, 225-third notch, 226-third bending edge, 227-first connecting piece, 228-fourth bending edge, 229-second connecting piece, 23-first connecting block, 231-first connecting part, 232-second connecting part, 3-anti-shake bracket, 31-connecting ring, 32-first connecting arm, 33-second connecting arm, 331-connecting ear, 4-bottom plate, 5-image sensor component, 6-anti-shake coil, 7-anti-shake magnetic steel, 8-shell, 9-gasket, 100-gap, 200-flexible connection structure. Modes for Carrying Out the Invention

[0029] The present application will be further described below with reference to the accompanying drawings and implementation methods.

[0030] To facilitate understanding of the present application, a more comprehensive description of the present application will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0031] When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. In this application, the descriptions such as "first", "second", "third", "fourth", etc. are only used for descriptive purposes and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated.

[0032] It should be noted that in this embodiment, the x-direction, y-direction and z-direction are perpendicular to each other in space, and the z-direction is parallel to the optical axis direction of the camera module. Example

[0033] An embodiment of the present application discloses an anti-shake mechanism, as shown in Figures 1 to 4, the anti-shake mechanism includes an anti-shake circuit board 1 and a flexible sheet 2 arranged on the outside of the anti-shake circuit board 1, the anti-shake circuit board 1 and the flexible sheet 2 partially overlap, and the flexible sheet 2 is an asymmetric structure; the flexible sheet 2 includes a first main body 21 and a first bent edge 22 arranged along the circumference of the first main body 21, and the first bent edge 22 is arranged perpendicular to the plane of the first main body 21; the anti-shake circuit board 1 includes a second main body 11, a second bent edge 12 arranged along the circumference of the second main body 11, and an electrical connection portion 13 provided on the second bent edge 12; the second bent edge 12 is arranged corresponding to part of the first bent edge 22, and a stiffness compensation structure is provided on the area where the first bent edge 22 is not connected to the second bent edge 12, and the connection area between the first bent edge 22 and the second bent edge 12 is at least partially in contact.

[0034] Preferably, the flexible sheet 2 is a metal spring.

[0035] The anti-shake mechanism described in the present application includes an anti-shake circuit board 1 and a flexible sheet 2. The anti-shake circuit board 1 and the flexible sheet 2 are partially overlapped, which reduces the volume of the anti-shake circuit board 1 and supplements the overall structure by setting the flexible sheet 2 to an asymmetric structure. By optimizing the structures of the anti-shake circuit board 1 and the flexible sheet 2, the electrical connection of the anti-shake circuit board 1 is ensured while adjusting and optimizing the optical anti-shake performance. The coordinated arrangement of the structural shapes of the flexible sheet 2 and the anti-shake circuit board 1 ensures the uniformity of the rigidity of the entire structure. The provision of the stiffness compensation structure further ensures the overall stability of the anti-shake mechanism and the stability of the anti-shake adjustment function. The first bent edge 22 and the second bent edge 12 are respectively arranged perpendicularly relative to the plane folds of the first main body 21 and the second main body 11. The first bent edge 22 and the second bent edge 12 adopt a three-dimensional folding structure. The anti-shake circuit board 1 and the flexible sheet 2 can be formed at one time during the parts preparation process, which saves the etching process, simplifies the parts preparation process, improves assembly efficiency, and reduces production costs. At the same time, the bending structure of the edges of the flexible sheet 2 and the anti-shake circuit board 1 meets the stiffness requirements in the x-direction, y-direction and z-direction, ensuring that the z-axis has a stable support function while ensuring the anti-shake stability in the x-direction and y-direction.

[0036] A gap 100 is provided between the connection areas of the first bending edge 22 and the second bending edge 12, and the gap 100 is at least partially filled with a flexible connection structure so that the connection areas of the first bending edge and the second bending edge are fully or partially fitted through the flexible connection structure.

[0037] In some embodiments, the gap 100 is completely filled with the flexible connection structure so that the connection areas of the first bending edge and the second bending edge are completely fitted together; or, as shown in Figure 5, in other embodiments, a plurality of flexible connection structures 200 are spaced apart in the gap 100, and the flexible connection structures 200 are evenly distributed in the gap so that the first bending edge and the second bending edge are partially fitted together through the plurality of flexible connection structures.

[0038] As shown in Figure 6 , the flexible sheet 2 further includes first connecting blocks 23, which are symmetrically located on either side of the first body 21 and connected to the first bent edge 22. Specifically, the first connecting blocks 23 are symmetrically located along the x-direction. The anti-shake circuit board 1 further includes second connecting blocks 14, which are symmetrically located on either side of the second body 11 and connected to the second bent edge 12. The first connecting blocks 23 and the second connecting blocks 14 are arranged correspondingly. In this embodiment of the present application, the electrical connection portion 13 is located along the y-direction.

[0039] In some embodiments, the first connecting block 23 includes a first connecting portion 231 connected to the first main body 21 and a second connecting portion 232 connected to the first bending edge 22; further, the second connecting portion 232 is symmetrically arranged on both sides of the first connecting portion 231, separating the first bending edge 22 into a first section 221 and a second section 222, and a first notch 223 is formed between the first section 221 and the second section 222; the second bending edge 12 is connected to the first section 221, and a second notch 224 is provided on the area corresponding to the first section 221 and the electrical connecting portion 13, and a third notch 225 is provided on the area corresponding to the second section 222 and the second notch 224.

[0040] The width of the first connecting portion 231 in the first connecting block 23 is greater than the width of the second connecting portion 232, ensuring a larger connection area between the first connecting portion 231 and the first main body 21, thereby ensuring the connection strength between the first connecting block 23 and the first main body 21, avoiding damage to the connection area between the first connecting block 23 and the first main body 21 during long-term use, and ensuring the durability of the flexible sheet 2.

[0041] The stiffness compensation structure is provided in a region of the first body 21 away from the second bending edge 12, or provided on the second section 222. Furthermore, in some embodiments, the stiffness supplement structure is integrally formed with the first body 21 or the second section 222.

[0042] In some embodiments, the stiffness compensation structure is a first thickening structure provided on the inner side and / or outer side of the second segment 222, that is, the setting of the first thickening structure makes the thickness of the second segment 222 along the x-direction greater than the thickness of the first segment 221 along the x-direction; as an option, the first thickening structure is integrally formed on the second segment 222 or adhered to the second segment 222; or, in another embodiment, the stiffness compensation structure is a heightened structure provided on the upper surface and / or lower surface of the second segment 222, that is, at this time, the setting of the stiffness supplementary structure makes the maximum thickness of the second segment 222 along the z-direction greater than the thickness of the first segment 221 along the z-direction; as an option, The height-increasing structure is integrally formed on the second section 222 or adhered to the second section 222; or, in other embodiments, the stiffness supplementing structure is a second thickening structure provided on the lower surface of the area of ​​the first main body 21 away from the second bending edge 12; that is, the setting of the second thickening structure makes the thickness of the area of ​​the first main body 21 away from the second bending edge 12 greater than the thickness of the area of ​​the first main body 21 close to the second bending edge 12; as an option, the second thickening structure is integrally formed on the lower surface of the area of ​​the first main body 21 away from the second bending edge 12 or adhered to the lower surface of the area of ​​the first main body 21 away from the second bending edge 12.

[0043] The ends of the second notches 224 extend outward to form third bent edges 226 arranged parallel to the first body 21. The third bent edges 226 are connected by a first connecting piece 227, and the electrical connection portion 13 is connected above the first connecting piece 227. The ends of the third notches 225 extend outward to form fourth bent edges 228 arranged parallel to the first body 21. The fourth bent edges 228 are connected by a second connecting piece 229. It should be noted that the "outward direction" refers to the direction away from the central axis of the first body 21.

[0044] As shown in Figures 1 to 3 and 8, the anti-shake mechanism also includes an anti-shake bracket 3, a base plate 4, an anti-shake coil 6, an anti-shake magnet 7, and a housing 8. The anti-shake bracket 3 is arranged in the area surrounded by the anti-shake circuit board 1 and the flexible sheet 2. The flexible sheet 2 is supported on the base plate 4. The anti-shake coil 6 is distributed around the anti-shake bracket 3. The anti-shake magnet 7 is correspondingly arranged above the anti-shake coil 6. The housing 8 and the base plate 4 together form a space for accommodating the anti-shake circuit board 1, flexible sheet 2, anti-shake bracket 3, anti-shake coil 6, and anti-shake magnet 7. The anti-shake coil 6 is arranged on the anti-shake circuit board 1, and the anti-shake magnet 7 is connected to the housing 8.

[0045] A gasket 9 is provided between the base plate 4 and the flexible sheet 2. The flexible sheet 2 is connected to the gasket 9, and the anti-shake bracket 3 is connected to the anti-shake circuit board 1. The anti-shake bracket 3 includes a square-shaped connecting ring 31, a first connecting arm 32 provided at the corner of the connecting ring 31, and second connecting arms 33 symmetrically provided on either side of the connecting ring 31. The second connecting arm 33 passes through the first notch 223. The second connecting arm 33 is provided with a connecting ear 331 connected to the inner wall of the first bent edge 22 and the second bent edge 12. The gasket 9 is connected to the bottom of the first connecting piece 227 and the second connecting piece 229, respectively, to securely support the combined structure of the flexible sheet 2 and the anti-shake circuit board 1. Specifically, the second connecting arm 33 is provided along the y-direction, and the connecting ears 331 are symmetrically provided on either side of the second connecting arm 33. The term "upward" refers to the direction away from the base plate 4, and the term "downward" refers to the direction toward the base plate 4.

[0046] The embodiment of the present application further discloses a camera module, which includes the anti-shake mechanism and the image sensor component 5 as described above. The image sensor component 5 is arranged in the area enclosed by the anti-shake circuit board 1 and the anti-shake bracket 3.

[0047] A first hole is defined in the center of the first body 21, and a second hole is defined in the center of the second body 11. The image sensor assembly 5 is disposed on the second body 11, and the first hole is used to dissipate heat from the image sensor assembly 5. Preferably, the first and second holes are coaxially disposed. A third hole is defined in the top of the housing 8 corresponding to the anti-shake bracket 3.

[0048] During anti-shake adjustment, the anti-shake mechanism drives the image sensor component 5 to move to compensate for the displacement caused by shaking, thereby obtaining a clear image. The anti-shake mechanism described in this application optimizes the overall stiffness of the anti-shake mechanism through structural optimization of the anti-shake circuit board 1 and the flexible sheet 2, improves the z-direction support force while effectively resisting the x-direction or y-direction traction force, thereby improving the stability of optical anti-shake adjustment and enhancing the image effect of the camera module.

[0049] The above is only an implementation method of the present application. It should be pointed out that for ordinary technicians in this field, improvements can be made without departing from the creative concept of the present application, but these all fall within the scope of protection of the present application.

Claims

1. An anti-shake mechanism, characterized in that: It includes an anti-shake circuit board and a flexible sheet arranged on the outside of the anti-shake circuit board, the anti-shake circuit board and the flexible sheet are partially overlapped, and the flexible sheet is an asymmetric structure; the flexible sheet includes a first main body and a first bending edge arranged along the circumference of the first main body, and the first bending edge is arranged perpendicular to the plane of the first main body; the anti-shake circuit board includes a second main body, a second bending edge arranged along the circumference of the second main body and an electrical connection part arranged on the second bending edge; the second bending edge is arranged corresponding to part of the first bending edge, and a stiffness compensation structure is provided on the area where the first bending edge is not connected to the second bending edge, and the connection area between the first bending edge and the second bending edge is at least partially fitted.

2. The anti-shake mechanism according to claim 1, characterized in that: A gap is provided between the connection areas of the first bending edge and the second bending edge, and the gap is at least partially filled with a flexible connection structure.

3. The anti-shake mechanism according to claim 2, wherein: The gap is completely filled with the flexible connection structure; or, a plurality of flexible connection structures are arranged at intervals in the gap, and the flexible connection structures are evenly distributed in the gap.

4. The anti-shake mechanism according to claim 1, wherein: The flexible sheet also includes a first connecting block, which is symmetrically arranged on both sides of the first main body and connected to the first bending edge; the anti-shake circuit board also includes a second connecting block, which is symmetrically arranged on both sides of the second main body and connected to the second bending edge; the first connecting block and the second connecting block are arranged correspondingly.

5. The anti-shake mechanism according to claim 4, characterized in that: The first connecting block includes a first connecting portion connected to the first main body and a second connecting portion connected to the first bending edge; the second connecting portions are symmetrically arranged on both sides of the first connecting portion, separating the first bending edge into a first section and a second section, and a first notch is formed between the first section and the second section; the second bending edge is connected to the first section, and a second notch is provided on the area of the first section corresponding to the electrical connecting portion, and a third notch is provided on the area of the second section corresponding to the second notch.

6. The anti-shake mechanism according to claim 5, characterized in that: The stiffness compensation structure is arranged on the first main body in an area away from the second bending edge, or is arranged on the second section.

7. The anti-shake mechanism according to claim 6, characterized in that: The stiffness compensation structure is a first thickening structure provided on the inner side and / or outer side of the second section; or, the stiffness compensation structure is a heightened structure provided on the upper surface and / or lower surface of the second section; or, the stiffness supplement structure is a second thickening structure provided on the lower surface of the first body in an area away from the second bending edge.

8. The anti-shake mechanism according to claim 5, characterized in that: The end of the second notch extends outward to form a third bent edge arranged parallel to the first main body, the third bent edges are connected by a first connecting piece, and the electrical connection part is connected above the first connecting piece; the end at the third notch extends outward to form a fourth bent edge arranged parallel to the first main body, and the fourth bent edges are connected by a second connecting piece.

9. The anti-shake mechanism according to claim 5, characterized in that: The anti-shake mechanism also includes an anti-shake bracket, a base plate, an anti-shake coil, an anti-shake magnet and a shell. The anti-shake bracket is arranged in the area surrounded by the anti-shake circuit board and the flexible sheet. The flexible sheet is carried on the base plate. The anti-shake coil is distributed around the anti-shake bracket. The anti-shake magnet is correspondingly arranged above the anti-shake coil. The shell and the base plate together form a accommodating space for accommodating the anti-shake circuit board, flexible sheet, anti-shake bracket, anti-shake coil and anti-shake magnet.

10. The anti-shake mechanism according to claim 9, characterized in that: A gasket is provided between the base plate and the flexible sheet, the flexible sheet is connected to the gasket, and the anti-shake bracket is connected to the anti-shake circuit board; the anti-shake bracket includes a connecting ring arranged in a square shape, a first connecting arm arranged in the corner area of the connecting ring, and second connecting arms symmetrically arranged on both sides of the connecting ring; the second connecting arm is arranged through the first notch; the second connecting arm is provided with a connecting ear connected to the inner wall of the first bending edge and the second bending edge; the gasket is respectively connected to the bottom of the first connecting piece and the second connecting piece.

11. A camera module, characterized in that: The camera module includes the anti-shake mechanism and the image sensor component according to any one of claims 1 to 10, and the image sensor component is arranged in the area surrounded by the anti-shake circuit board and the anti-shake bracket.

Images