CN216531544U - Camera module and electronic equipment - Google Patents

Abstract

The present disclosure provides a camera module and an electronic device, the camera module includes a lens holder, a motion holder and a plurality of length adjusting members; one side of the lens support is used for connecting a lens, the other side of the lens support is provided with a groove, the moving support is located in the groove and can move relative to the lens support, the length adjusting pieces are located between the moving support and the lens support, one end of each length adjusting piece is connected with the lens support, the other end of each length adjusting piece is connected with the moving support, and the length adjusting pieces are used for driving the moving support to move along the direction close to or far away from the groove bottom of the groove. The groove is formed in one side of the lens support, the moving support can move relative to the lens support, the length adjusting pieces are located between the moving support and the lens support, and the length adjusting pieces can drive the moving support to move in the direction close to or far away from the groove bottom of the groove, so that focusing is performed by the length adjusting pieces and the moving support. Because the length adjustment spare size is little, occupation space is little, is favorable to realizing the miniaturization of module.

Description

Camera module and electronic equipment

Technical Field

The embodiment of the disclosure relates to the technical field of cameras, in particular to a camera module and electronic equipment.

Background

With the development and popularization of electronic equipment such as mobile phones or tablet computers, the requirements on the camera shooting function of the electronic equipment are greatly improved, especially in the aspects of automatic focusing and anti-shake.

Traditional camera module includes lens holder, motion carrier and multiunit drive assembly usually, and the motion carrier is located lens holder's inboard, and every group drive assembly includes magnet and coil, and one of them group drive assembly is located the top of motion carrier, as auto focus's drive assembly, and remaining drive assembly is located around the motion carrier, as the drive assembly of anti-shake, makes the motion carrier drive anti-shake chip and moves together, mends and corrects the displacement deflection that produces because of the shake, realizes the anti-shake function of camera lens.

In the related art, the coil positioned at the top of the moving carrier and the magnet generate electromagnetic force to drive the moving carrier to move so as to realize the focusing mode, the structure is complex, the occupied space is large, and the miniaturization of the module is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model provides a camera module and electronic equipment is favorable to the miniaturization of camera module. The technical scheme at least comprises the following scheme:

in one aspect, the disclosed embodiment provides a camera module, which includes: the device comprises a lens bracket, a motion bracket and a plurality of length adjusting pieces;

one side of the lens support is used for connecting a lens, the other side of the lens support is provided with a groove, the moving support is located in the groove and can move relative to the lens support, the length adjusting piece is located between the moving support and the lens support, one end of the length adjusting piece is connected with the lens support, the other end of the length adjusting piece is connected with the moving support, and the length adjusting piece is used for driving the moving support to move along the direction close to or far away from the groove bottom of the groove.

Optionally, a plurality of the length-adjustment members are evenly distributed around the opening in the middle of the motion bracket.

Optionally, the length adjuster is a memory alloy wire;

the camera module comprises a plurality of heating structures, the heating structures are located at the bottom of the groove, are connected with the length adjusting pieces in a one-to-one correspondence mode and are used for heating the length adjusting pieces correspondingly.

Optionally, the side wall of the groove has an inner flange, and the outer side wall of the motion bracket has an outer flange, and the outer flange is opposite to the inner flange and is located on one side of the inner flange close to the groove bottom of the groove.

Optionally, the camera module includes a first magnetic member and a second magnetic member, the first magnetic member is located on a surface of the inner flange close to the outer flange, the second magnetic member is located on a surface of the outer flange close to the inner flange, and the second magnetic member is opposite to the first magnetic member.

Optionally, the camera module includes a plurality of first driving members and a plurality of second driving members, the plurality of first driving members are located on an inner side wall of the inner flange, the plurality of second driving members are located on an outer side surface of the moving bracket, and the second driving members are opposite to the first driving members.

Optionally, the first driving member and the second driving member are both magnetic members, and at least one is a magnetic coil.

Optionally, camera module includes image sensor and flexible circuit board, image sensor is located the one side of flexible circuit board, and with flexible circuit board links to each other, flexible circuit board is located the motion support is kept away from the one side of the tank bottom of recess, and with the motion support links to each other, image sensor with the opening in motion support middle part is relative.

Optionally, camera module includes backup pad and rolling member, the backup pad is located the motion support is kept away from one side of the tank bottom of recess, and with the lens holder links to each other, the backup pad is close to the side of motion support has the mounting groove, the rolling member is located in the mounting groove, flexible circuit board with the rolling member roll cooperation.

On the other hand, the embodiment of the present disclosure further provides an electronic device, which includes the camera module according to the foregoing aspect.

The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:

the groove is formed in one side of the lens support, the moving support is located in the groove and can move relative to the lens support, the length adjusting pieces are arranged between the moving support and the lens support, one end of each length adjusting piece is connected with the lens support, the other end of each length adjusting piece is connected with the moving support, the length adjusting pieces can drive the moving support to move along the direction close to or far away from the groove bottom of the groove, and therefore the length adjusting pieces and the moving support can be used for focusing. Because the length adjustment spare size is little, occupation space is little, is favorable to realizing the miniaturization of module.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure;

fig. 2 is a schematic cross-sectional view of a camera module according to an embodiment of the present disclosure;

fig. 3 is a partial schematic view of a camera module according to an embodiment of the disclosure;

FIG. 4 is a partial schematic view of a lens holder provided in an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a kinematic mount provided in an embodiment of the present disclosure;

fig. 6 is a schematic cross-sectional view of a camera module according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of an electronic device provided in an embodiment of the present disclosure.

The various reference numbers in the drawings are illustrated below:

1-a lens;

10-a lens holder; 10 a-a lens mount; 10 b-a base; 11-a groove; 12-inner flange; 121-an inner sidewall; 122-a first top wall; 13-avoidance groove;

20-a kinematic mount; 21-opening; 22-an outer flange; 221-an outer sidewall; 222-a second top wall; 223-a second bottom wall;

30-a length adjustment member; 40-a heating structure;

51-a first magnetic member; 52-a second magnetic member;

61-a first drive member; 62-a second drive member;

70-an image sensor; 80-a flexible circuit board;

90-a support plate; 91-rolling elements; 92-a mounting groove;

100-a camera module;

200-shell.

Detailed Description

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," "third," and similar terms in the description and claims of the present disclosure are not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure. The camera module is a camera module in electronic equipment, and the electronic equipment can be but is not limited to a mobile phone, a tablet computer, a notebook computer and the like.

As shown in fig. 1, the camera module includes: a lens holder 10, a moving holder 20, and a plurality of length adjusters 30. Wherein, one side of the lens holder 10 is used for connecting the lens 1, and the other side is provided with a groove 11.

Fig. 2 is a schematic cross-sectional view of a camera module according to an embodiment of the present disclosure. As shown in fig. 2, the moving mount 20 is located in the groove 11, and the moving mount 20 can move relative to the lens holder 10. A plurality of length adjusters 30 are positioned between the moving mount 20 and the lens mount 10, and one end of the length adjusters 30 is connected to the lens mount 10 and the other end is connected to the moving mount 20. The length adjustment member 30 is used to drive the moving bracket 20 to move in a direction toward or away from the bottom of the groove 11.

The groove 11 is formed in one side of the lens holder 10, the moving holder 20 is located in the groove 11 and can move relative to the lens holder 10, the length adjusting pieces 30 are arranged between the moving holder 20 and the lens holder 10, one end of each length adjusting piece 30 is connected with the lens holder 10, the other end of each length adjusting piece 30 is connected with the moving holder 20, and the length adjusting pieces 30 can drive the moving holder 20 to move in the direction close to or far away from the bottom of the groove 11, so that focusing can be performed by the length adjusting pieces 30 and the moving holder 20. Because the length adjusting piece 30 is small in size and small in occupied space, the miniaturization of the module is favorably realized.

The lens holder 10 serves to fix, support and protect other components of the camera module. Illustratively, the lens holder 10 may be a one-piece structure, or may be formed by assembling a plurality of parts. For example, as shown in fig. 1, the lens holder 10 includes a lens mount portion 10a and a base 10b, and the lens mount portion 10a is located at one side of the base 10b and is connected to the base 10 b. The lens mount 10a is for mounting the lens 1. The base 10b has a recess 11 at the center thereof, and the moving bracket 20 is located in the recess 11. The lens mount 10a and the base 10b may be bonded integrally by glue.

The moving bracket 20 has a rectangular parallelepiped shape, and the moving bracket 20 has an opening 21 in the middle thereof, the opening 21 being opposite to the recess 11.

As shown in fig. 1, the camera module includes an image sensor 70 and a flexible circuit board 80. The image sensor 70 is located on one side of the flexible circuit board 80, and the image sensor 70 is connected to the flexible circuit board 80. The flexible circuit board 80 is located on the side of the moving bracket 20 away from the bottom of the groove 11, and the flexible circuit board 80 is connected to the moving bracket 20. The image sensor 70 is opposite to the opening 21 in the middle of the moving bracket 20.

The image sensor 70 is opposite to the opening 21, so that after the light is collected by the lens 1, the light can be transmitted to the photosensitive surface of the image sensor 70, and the image sensor 70 senses the light passing through the lens 1.

As shown in fig. 1, the side wall of the lens holder 10 has an escape groove 13, and the flexible circuit board 80 is located in the escape groove 13 and connected to the moving holder 20, so that the image sensor 70 and the flexible circuit board 80 are moved together when the moving holder 20 moves. Because the image sensor 70 is fixed on the flexible circuit board 80, the flexible circuit board 80 can continuously and stably provide electric energy for the image sensor 70, poor contact of the image sensor 70 is avoided, and power supply stability is improved. And the flexible circuit board 80 is installed in the dodging groove 13, the overall height of the camera module is not increased, and the structure of the camera module is more compact and light.

A plurality of length adjusters 30 are mounted inside the lens holder 10 with one end connected to the lens mount portion 10a of the lens holder 10 and the other end connected to the moving frame 20. The length adjusting part 30 drives the moving bracket 20 to move in the direction close to or far from the groove bottom of the groove 11, so as to drive the image sensor 70 to move in the direction close to or far from the lens 1, and the automatic focusing function of the camera module is realized.

When the camera module is focused, light rays form an image after passing through the lens 1, and there may be a gap between the image plane and the image sensor 70, so that the image cannot fall on the image sensor 70. At this time, the length adjusting member 30 drives the moving bracket 20 to move in a direction close to or away from the bottom of the groove, and drives the image sensor 70 to move in a direction close to or away from the lens 1, so that the image plane coincides with the photosensitive surface of the image sensor 70, thereby obtaining a clear and high-quality image and realizing the auto-focusing function of the camera module.

As shown in fig. 1, a plurality of length-adjusting members 30 are evenly distributed around the opening 21 in the middle of the moving bracket 20. Since the length-adjusting members 30 can generate a pulling force on the moving bracket 20, the length-adjusting members 30 are uniformly distributed around the opening 21, so that the moving bracket 20 is stressed more uniformly and moves more smoothly.

In the embodiment of the present disclosure, the camera module includes 4 length-adjusting members 30, and the 4 length-adjusting members 30 are distributed in a rectangular shape at 4 corners of the moving bracket 20, so that the moving bracket 20 can move more smoothly in a direction close to or far from the bottom of the groove 11.

In the disclosed embodiment, the length adjuster 30 is a memory alloy wire. The memory alloy wire has the characteristic of thermal contraction, is heated to a specific temperature to carry out shape memory heat treatment, is deformed and shortened to a certain length, is cooled to generate a martensite phase, and is heated to the specific temperature again, the memory alloy wire is transformed from a low-temperature martensite phase to a high-temperature austenite phase and is restored to the length before deformation. The attractive force generated by the change of the crystal structure of the memory alloy wire enables the tensile force of the memory alloy wire during contraction to be much larger than the electromagnetic force between a common magnet and a coil, and the driving speed of the motion support 20 can be improved, so that the reaction speed of the camera module and the accuracy of motion are effectively improved.

Fig. 3 is a partial schematic view of a camera module according to an embodiment of the present disclosure. As shown in fig. 3, the camera module includes a plurality of heating structures 40, the plurality of heating structures 40 are located at the bottom of the groove 11, and the plurality of heating structures 40 are connected to the plurality of length-adjusting members 30 in a one-to-one correspondence.

The heating structure 40 is used to heat the respective length adjuster 30. After the heating structure 40 heats the memory alloy wire, the temperature of the memory alloy wire rises and returns to the length before deformation, so that the memory alloy wire contracts, the length is reduced, and corresponding tension is generated on the motion support 20. Therefore, by controlling the temperature of the heating structure 40, the length of the memory alloy wire can be controlled, so that the moving support 20 is driven to drive the image sensor 70 to move to a target position in a target direction, the photosensitive surface of the image sensor 70 is overlapped with the image plane, and the automatic focusing of the camera module is realized.

Referring to fig. 2, the side wall of the groove 11 has an inner flange 12, and the outer side wall of the moving bracket 20 has an outer flange 22, the outer flange 22 is opposite to the inner flange 12, and the outer flange 22 is located on the side of the inner flange 12 near the bottom of the groove 11.

The outer flange 22 is disposed opposite to the inner flange 12, so that the movement range of the moving bracket 20 can be limited, and the moving bracket 20 can be prevented from being removed from the groove 11.

Fig. 4 is a partial schematic view of a lens holder according to an embodiment of the disclosure. As shown in fig. 4, the lens holder includes 4 sections of inner flanges 12, and the 4 sections of inner flanges 12 are sequentially connected end to end. The inner flange 12 has an inner side wall 121, a first top wall 122 and a first bottom wall 123. Referring to fig. 2, the inner side wall 121 is opposite to the outer side surface of the moving bracket 20, and the first top wall 122 is opposite to the outer flange 22.

Fig. 5 is a schematic structural diagram of a motion bracket provided in an embodiment of the present disclosure. As shown in fig. 5, the motion bracket 20 includes 4 segments of outer flanges 22, and the 4 segments of outer flanges 22 are connected end to end in sequence. The outer flange 22 has an outer sidewall 221, a second top wall 222 and a second bottom wall 223. Referring to fig. 2, the outer sidewall 221 is opposite to the inner sidewall of the groove 11, and the second bottom wall 223 is opposite to the inner flange 12.

Referring to fig. 2, a certain gap is provided between the inner side wall 121 of the inner flange 12 and the outer side surface of the moving bracket 20, and a certain gap is also provided between the outer side wall 221 of the outer flange 22 and the inner side wall of the groove 11 to provide a moving space for the moving bracket 20, so that camera module shake prevention is achieved.

Referring to fig. 2, the camera module includes a first magnetic member 51 and a second magnetic member 52, the first magnetic member 51 is located on a surface of the inner flange 12 close to the outer flange 22, the second magnetic member 52 is located on a surface of the outer flange 22 close to the inner flange 12, and the second magnetic member 52 is opposite to the first magnetic member 51. The first magnetic member 51 interacts with the second magnetic member 52, and completes focusing of the camera module together with the length adjustment member 30.

For example, referring to fig. 2, when the lens 1 of the camera module is directed vertically upward, the outer flange 22 of the moving bracket 20 is located on the upper side of the inner flange 12, and at this time, the first magnetic member 51 and the second magnetic member 52 repel each other, so that the moving bracket 20 is kept in a floating state relative to the lens holder 10, which can reduce friction, the length adjusting member 30 provides a pulling force to the moving bracket 20, and the moving bracket 20 moves towards or away from the groove bottom of the groove 11 under the repelling force between the first magnetic member 51 and the second magnetic member 52 and the pulling force provided by the length adjusting member 30.

Referring to fig. 6, when the lens 1 of the camera module faces vertically downward, the outer flange 22 of the moving bracket 20 is located at the lower side of the inner flange 12, and the first magnetic member 51 and the second magnetic member 52 attract each other, the length-adjusting member 30 provides a pulling force to the moving bracket 20, and the moving bracket 20 moves toward or away from the bottom of the groove 11 under the action of the attraction force between the first magnetic member 51 and the second magnetic member 52 and the pulling force provided by the length-adjusting member 30.

In the embodiment of the present disclosure, the camera module includes 8 first magnetic members 51 and 8 second magnetic members 52, where the 8 first magnetic members 51 are uniformly disposed around the first top wall 122 of the inner flange 12, and the 8 second magnetic members 52 are uniformly disposed around the second bottom wall 223 of the outer flange 22, so as to make the moving bracket 20 maintain a floating state more stably relative to the lens holder 10.

Alternatively, the number of the first magnetic member 51 and the second magnetic member 52 is not limited to 8, and the number can be flexibly set according to actual situations.

Referring to fig. 4 and 5, the camera module includes a plurality of first driving members 61 and a plurality of second driving members 62, the plurality of first driving members 61 are located on an inner sidewall of the inner flange 12, the plurality of second driving members 62 are located on an outer sidewall of the moving bracket 20, and the second driving members 62 are opposite to the first driving members 61.

The first driving member 61 and the second driving member 62 are used for driving the moving bracket 20 to move in the groove 11 in a direction approaching or departing from the inner side wall of the groove 11. Thereby driving the image sensor 70 to move to correct the displacement deviation generated by the shake, and improving the unstable imaging problem of the camera module caused by the shake of the user in the using process. And first driving piece 61 sets up in the lateral part of flange 12, and second driving piece 62 sets up the lateral part at motion support 20, has also reduced the thickness of camera module, is favorable to realizing the module miniaturization.

In the embodiment of the present disclosure, the camera module includes 8 first driving members 61 and 8 second driving members 62, the 8 first driving members 61 are uniformly disposed around the inner side wall of the inner flange 12, and the 8 second driving members 62 are uniformly disposed around the outer side surface of the motion bracket 20, so as to prevent the motion bracket 20 from deflecting due to uneven stress, thereby causing the occurrence of the situation of clamping, etc.

Alternatively, the number of the first driving member 61 and the second driving member 62 is not limited to 8, and the number can be flexibly set according to actual situations.

In the embodiment of the present disclosure, the first driving member 61 and the second driving member 62 are both magnetic members, and at least one is a magnetic coil. For example, the first driving member 61 is a magnetic coil, the second driving member 62 is a magnetic member, the magnetic coil is configured to generate a magnetic field, the magnetic member is configured to move the moving support 20, and when the magnetic member moves relative to the magnetic coil, an electromagnetic force is generated to drive the moving support 20 to move in the groove 11 in a direction approaching or separating from a sidewall of the groove 11.

In other examples, the first driving member 61 and the second driving member 62 may be interchanged, for example, the first driving member 61 is a magnetic member, and the second driving member 62 is a magnetic coil.

When the camera module is placed in an inclined manner, the moving support 20 moves in a direction close to or away from the bottom of the groove 11 under the action force between the first magnetic piece 51 and the second magnetic piece 52, the pulling force of the length adjusting piece 30 on the moving support 20, and the action force between the first driving piece 61 and the second driving piece 62, so that focusing is realized, and the moving support moves in a direction close to or away from the groove 11, so that the camera lens is prevented from shaking.

In some examples, the movement of the moving bracket 20 in the groove 11 in a direction to approach or depart from the side wall of the groove 11 may also be driven by a memory alloy wire. One end of the memory alloy wire is connected with the inner side wall 121 of the inner flange 12, the other end is connected with the outer side surface of the moving support 20, and a heating structure is arranged on the inner side wall 121 of the inner flange 12 and used for heating the corresponding memory alloy wire. When the moving support 20 needs to be driven to move, the memory alloy wire is heated to the temperature corresponding to the target length, so that the memory alloy wire is restored to the target length, and the moving support 20 is driven to move. Compared with electromagnetic driving, the movement of the movement support 20 is driven by the memory alloy wires, so that stable driving force can be continuously generated, and the phenomenon that the driving force is unstable and the anti-shaking effect is poor due to mutual interference among a plurality of magnetic fields is avoided.

In other examples, the moving support 20 may be driven to move in the groove 11 in a direction close to or away from the side wall of the groove 11 by piezoelectric ceramics. By applying voltage to the piezoelectric ceramic, the piezoelectric ceramic is mechanically deformed, so that mechanical stress is generated, and the motion bracket 20 is driven to move.

Fig. 7 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure. As shown in fig. 7, the camera module includes a support plate 90 and a rolling member 91. Referring to fig. 1, the support plate 90 is located at a side of the moving mount 20 away from the groove bottom of the groove 11, and the support plate 90 is connected to the lens holder 10. The side of the support plate 90 adjacent to the moving bracket 20 has a mounting groove 92, and the rolling member 91 is seated in the mounting groove 92. The flexible circuit board 80 is in rolling engagement with the rolling member 91.

The support plate 90 can support and limit the motion bracket 20. The rolling member 91 is partially positioned in the mounting groove 92, and is partially movably connected with the flexible circuit board 80. The rolling member 91 is used for carrying the movable bracket 20 and movably connecting the movable bracket 20 with the supporting plate 90. When the movable bracket 20 moves in the groove 11 in a direction approaching or departing from the sidewall of the groove 11, the rolling member 91 rolls in the mounting groove 92 relative to the movable bracket 20, so that the movable bracket 20 can move smoothly relative to the support plate 90, and friction can be reduced, which is advantageous for the movement of the movable bracket 20.

Fig. 8 is a schematic structural diagram of an electronic device provided in an embodiment of the present disclosure. The electronic device may be, but is not limited to, a mobile phone, a tablet computer, a notebook computer. In the embodiments of the present disclosure, a mobile phone is taken as an example for explanation. As shown in fig. 8, the electronic apparatus includes a camera module 100 and a housing 200. The camera module 100 is fixedly connected to the housing 200 through the lens holder 10.

Alternatively, the camera module 100 may be a front camera of the electronic device, and may also be a rear camera of the electronic device.

One side of the lens support 10 of the camera module 100 is provided with the groove 11, the moving support 20 is positioned in the groove 11 and can move relative to the lens support 10, the length adjusting pieces 30 are arranged between the moving support 20 and the lens support 10, one end of each length adjusting piece 30 is connected with the lens support 10, the other end of each length adjusting piece is connected with the moving support 20, the length adjusting pieces 30 can drive the moving support 20 to move along the direction close to or far away from the groove bottom of the groove 11, the length adjusting pieces 30 are small in size, the automatic focusing driving structure of the camera module 100 is effectively simplified, the miniaturization of the module is facilitated, and the light and thin electronic equipment is facilitated to be promoted. And realize the auto focus of camera module 100 through length adjustment spare 30, both guaranteed the driving force that lasts stable, can avoid producing magnetic field and cause magnetic interference to other sensors in the electronic equipment again, effectively improved the reaction rate of electronic equipment.

The above description is meant to be illustrative of alternative embodiments of the disclosure and not to limit the disclosure, and any modification, equivalent switch, improvement, etc. made within the spirit and principles of the disclosure should be included within the scope of the disclosure.

Claims (10)

1. The utility model provides a camera module which characterized in that includes: a lens holder (10), a moving holder (20) and a plurality of length adjusting pieces (30);

one side of the lens support (10) is used for connecting a lens, the other side of the lens support is provided with a groove (11), the moving support (20) is located in the groove (11) and can move relative to the lens support (10), the length adjusting pieces (30) are located between the moving support (20) and the lens support (10), one end of each length adjusting piece is connected with the lens support (10), the other end of each length adjusting piece is connected with the moving support (20), and the length adjusting pieces (30) are used for driving the moving support (20) to move along the direction close to or far away from the groove bottom of the groove (11).

2. The camera module according to claim 1, characterized in that a plurality of the length adjustment members (30) are evenly distributed around the opening (21) in the middle of the kinematic mount (20).

3. The camera module according to claim 2, characterized in that the length adjustment member (30) is a memory alloy wire;

the camera module comprises a plurality of heating structures (40), the heating structures (40) are located at the bottoms of the grooves (11), and the heating structures are connected with the length adjusting pieces (30) in a one-to-one correspondence mode and used for heating the length adjusting pieces (30).

4. The camera module according to claim 1, characterized in that the side wall of the recess (11) has an inner flange (12), and the outer side wall of the motion bracket (20) has an outer flange (22), the outer flange (22) being opposite to the inner flange (12) and located on the side of the inner flange (12) near the bottom of the recess (11).

5. The camera module according to claim 4, characterized in that the camera module comprises a first magnetic member (51) and a second magnetic member (52), the first magnetic member (51) is located on a surface of the inner flange (12) close to the outer flange (22), the second magnetic member (52) is located on a surface of the outer flange (22) close to the inner flange (12), and the second magnetic member (52) is opposite to the first magnetic member (51).

6. The camera module according to claim 4, characterized in that the camera module comprises a plurality of first driving members (61) and a plurality of second driving members (62), the plurality of first driving members (61) are located on the inner side wall of the inner flange (12), the plurality of second driving members (62) are located on the outer side surface of the moving bracket (20), and the second driving members (62) are opposite to the first driving members (61).

7. The camera module according to claim 6, wherein the first driving member (61) and the second driving member (62) are both magnetic members, and at least one is a magnetic coil.

8. The camera module according to any one of claims 1 to 7, characterized in that the camera module comprises an image sensor (70) and a flexible circuit board (80), wherein the image sensor (70) is located on one side of the flexible circuit board (80) and connected with the flexible circuit board (80), the flexible circuit board (80) is located on one side of the moving bracket (20) away from the bottom of the groove (11) and connected with the moving bracket (20), and the image sensor (70) is opposite to the opening (21) in the middle of the moving bracket (20).

9. The camera module according to claim 8, characterized in that the camera module comprises a support plate (90) and a rolling member (91), the support plate (90) is located on one side of the moving bracket (20) far away from the bottom of the groove (11) and is connected with the lens holder (10), the side of the support plate (90) close to the moving bracket (20) is provided with a mounting groove (92), the rolling member (91) is located in the mounting groove (92), and the flexible circuit board (80) is in rolling fit with the rolling member (91).

10. An electronic device, comprising the camera module (100) according to any one of claims 1 to 9.

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