CN116736605A - Lens driving structure, image pickup device and mobile terminal - Google Patents

Abstract

The application provides a lens driving structure, an imaging device and a mobile terminal. The lens driving structure comprises a shell and a base assembly, wherein the shell is covered on the base assembly and forms a containing space with the base assembly, and the lens driving structure further comprises a lens arranged inside the containing space: a lens support; a frame assembly, at least a portion of the lens support being movably disposed within the frame assembly; a first drive assembly, at least a portion of which is disposed on the lens support; a second drive assembly, at least a portion of which is disposed on the frame assembly; one end of the limiting connecting piece is connected with the frame component, and the other end of the limiting connecting piece is connected with the base component; a guide assembly, at least a portion of which is disposed on the frame assembly; the movable frame is arranged on one side of the frame component far away from the lens support body. The application solves the problem of poor service performance of the anti-shake structure of the optical lens in the prior art.

Description

Lens driving structure, image pickup device and mobile terminal

Technical Field

The present application relates to the field of optical lens apparatuses, and in particular, to a lens driving structure, an imaging device, and a mobile terminal.

Background

With the increase of the demands of consumers for mobile phone photographing, the functions of the mobile phone camera (i.e. the camera module) are more and more abundant, and the functions of portrait photographing, remote photographing, optical zooming, optical anti-shake and the like are integrated in the camera with limited volume, wherein the functions of automatic focusing and optical anti-shake are often realized by relying on an optical actuator or a motor.

The conventional optical actuator with focusing and jitter compensation functions generally includes a suspension structure, for example, when the suspension structure is adopted, the anti-jitter mechanism is located below the focusing mechanism, and the anti-jitter mechanism is connected with the focusing mechanism through four suspension wires with elasticity. Without shake, the focusing mechanism drives the lens to move in the optical axis (Z-axis) direction to take a clear image. Under the condition of shaking, the lens can slightly move along the X axis or the Y axis, and when shaking compensation is started, the anti-shaking mechanism drives the focusing mechanism to move along the X axis or the Y axis so as to compensate the shaking amount, however, the assembly difficulty of the suspension wire structure is extremely high, and the suspension wire is easy to deform under the impact of external force, so that the anti-shaking driving precision is influenced.

Therefore, the prior art has the problem that the anti-shake structure of the optical lens has poor service performance.

Disclosure of Invention

The application mainly aims to provide a lens driving structure, an imaging device and a mobile terminal, so as to solve the problem that an anti-shake structure of an optical lens in the prior art is poor in service performance.

In order to achieve the above object, according to one aspect of the present application, there is provided a lens driving structure including a housing and a base assembly, the housing being provided on the base assembly and forming a receiving space with the base assembly, the lens driving structure further including a housing disposed inside the receiving space: a lens support; a frame assembly, at least a portion of the lens support being movably disposed within the frame assembly; a first drive assembly, at least a portion of the first drive assembly being disposed on the lens support and at least another portion of the first drive assembly being disposed on the frame assembly; the second driving assembly, at least one part of the second driving assembly is set up on the frame assembly, at least another part of the second driving assembly is set up on the base assembly; one end of the limiting connecting piece is connected with the frame component, the other end of the limiting connecting piece is connected with the base component, and a part of the first driving component arranged on the frame component is electrically connected with the base component through the limiting connecting piece; the guide assembly, at least one part of the guide assembly is set up on the frame assembly, at least another part of the guide assembly is set up on the base assembly; the movable frame is arranged on one side of the frame component far away from the lens support body; when the second driving component is electrified, the frame component drives the lens supporting body to move along the X-axis and/or Y-axis direction, and the frame component and part of the guiding component arranged on the frame component move relative to the movable frame and/or the frame component, part of the guiding component arranged on the frame component and the movable frame move relative to the base component.

Further, when the first drive assembly is energized, the lens support moves along the Z-axis relative to the frame assembly.

Further, an included angle larger than 0 degrees is formed between the length direction of the limiting connecting piece and the Z axis.

Further, the limiting connecting pieces are tension springs, the number of the limiting connecting pieces is four, and at least two tension springs are electrically connected with a part of the first driving assembly on the frame assembly.

Further, four tension springs are respectively arranged at four different corners of the base assembly, and the different tension springs are respectively connected with different corners of the frame assembly.

Further, the frame component is provided with four first connection bulges corresponding to the four tension springs, the base component is provided with second connection bulges corresponding to the four tension springs, and two ends of different tension springs are respectively connected with different first connection bulges and different second connection bulges.

Further, the guide assembly comprises a plurality of guide bodies, the frame assembly and the base assembly are respectively provided with the plurality of guide bodies, the movable frame is respectively provided with a plurality of guide grooves corresponding to the plurality of guide bodies, and each guide body is matched with at least one different guide groove.

Further, the extending direction of the guide body arranged on the frame component is perpendicular to the extending direction of the guide body arranged on the base component, and the extending direction of the guide groove is the same as the extending direction of the corresponding guide body.

Further, a guide groove matched with the guide body on the frame component is arranged on one side of the movable frame close to the frame component; the guide groove matched with the guide body on the base component is arranged on one side of the movable frame far away from the frame component.

Further, the number of the guide bodies on the frame assembly is the same as the number of the guide bodies on the base assembly; and/or one of the guide body on the frame assembly and the guide body on the base assembly extends in the X-axis direction, and the other extends in the Y-axis direction.

Further, the number of the guide bodies is the same as that of the guide grooves, the guide grooves are in one-to-one correspondence, the length of each guide groove is smaller than that of each guide body, and two ends of the guide bodies in the length direction extend out from two ends of the corresponding guide grooves in the length direction.

Further, the movable frame is quadrilateral and comprises a first side, a second side, a third side and a fourth side which are sequentially connected, the first side and the third side are mutually parallel, the second side and the fourth side are mutually parallel, the frame component and the base component are respectively provided with four guide bodies, the frame component corresponds to the first side and the third side and is respectively provided with two guide bodies, the base component corresponds to the second side and the fourth side and is respectively provided with two guide bodies, and the two guide bodies corresponding to the same side are arranged along the length direction interval of the corresponding side.

Further, the first driving assembly includes: a first drive magnet disposed on a circumferential outer side wall of the lens support body; the first driving coil is arranged on the frame assembly corresponding to the first driving magnet and is electrically connected with the limit connecting piece.

Further, the second driving assembly includes: at least two second driving magnets arranged on the frame assembly; the second driving coils and the second driving magnets are the same in number and are arranged on the base assembly corresponding to the second driving magnets.

Further, the first driving magnet and the second driving magnet are respectively distributed on different side walls of the frame assembly.

Further, the lens driving structure further comprises at least two sliding shafts, at least one sliding shaft is arranged at two ends of the side wall of the frame assembly where the first driving magnet is located, the axial direction of the sliding shaft is identical to the Z axis, and the sliding shafts are in butt joint with the lens supporting body.

Further, the frame assembly is provided with a first chute corresponding to the sliding shaft, the lens support body is provided with a second chute corresponding to the sliding shaft, and the sliding shafts, the first chute and the second chute are the same in number and correspond to each other one by one.

Further, the lens driving structure further comprises a plurality of balls, two rows of balls arranged along the Z-axis direction are arranged on the inner side wall of the second sliding groove, and the part of the sliding shaft positioned in the second sliding groove is abutted against the balls.

Further, the two rows of balls in the same second chute are the same in number and correspond to each other one by one, the two balls corresponding to each other are the same in height in the Z-axis direction, and an included angle between a connecting line of the center of one ball and the sliding shaft and a connecting line of the center of the other ball and the sliding shaft is more than or equal to 60 degrees and less than or equal to 90 degrees.

Further, the lens driving structure further comprises a first magnetic attraction piece, and the first magnetic attraction piece is arranged on one side, far away from the first driving magnet, of the first driving coil.

According to another aspect of the present application, there is provided an image pickup apparatus including the above-described lens driving structure.

According to another aspect of the present application, there is provided a mobile terminal including the above-described image pickup apparatus.

By applying the technical scheme of the application, the lens driving structure comprises a shell and a base component, wherein the shell is covered on the base component and forms a containing space with the base component, and the lens driving structure also comprises a lens supporting body, a frame component, a first driving component, a second driving component, at least two limiting connecting pieces, a guiding component and a movable frame, wherein the lens supporting body, the frame component, the first driving component, the second driving component, the at least two limiting connecting pieces, the guiding component and the movable frame are arranged in the containing space. At least a portion of the lens support is movably disposed within the frame assembly; at least one part of the first driving assembly is arranged on the lens supporting body, and at least another part of the first driving assembly is arranged on the frame assembly; at least one part of the second driving assembly is arranged on the frame assembly, and at least another part of the second driving assembly is arranged on the base assembly; one end of the limiting connecting piece is connected with the frame assembly, the other end of the limiting connecting piece is connected with the base assembly, and a part of the first driving assembly arranged on the frame assembly is electrically connected with the base assembly through the limiting connecting piece; at least one part of the guide assembly is arranged on the frame assembly, and at least another part of the guide assembly is arranged on the base assembly; the movable frame is arranged at one side of the frame component far away from the lens support body; when the second driving component is electrified, the frame component drives the lens supporting body to move along the X-axis and/or Y-axis direction, and the frame component and part of the guiding component arranged on the frame component move relative to the movable frame and/or the frame component, part of the guiding component arranged on the frame component and the movable frame move relative to the base component.

When the lens driving structure is used, at least one part of the lens support body is movably arranged in the frame assembly, so that the lens support body can move relative to the frame assembly in the Z-axis direction when AF driving is performed. And when the anti-shake driving is needed, the second driving assembly can be electrified, so that the frame assembly can drive the lens supporting body to perform anti-shake motion in the XY plane. Meanwhile, when the frame assembly drives the lens supporting body to conduct anti-shake motion in the XY plane, the frame assembly and the part of the guiding assembly arranged on the frame assembly move relative to the movable frame, and the frame assembly, the part arranged on the frame assembly and the movable frame move relative to the base assembly, so that the motion guiding and limiting effects on the frame assembly can be achieved through the mutual matching between the guiding assembly and the movable frame, and meanwhile friction force between the frame assembly and the base assembly can be effectively reduced, and accordingly anti-shake motion effects are improved. Meanwhile, the lens driving structure is also provided with the limiting connecting piece, so that the frame assembly can be provided with pretightening force through the limiting connecting piece and limited in the Z-axis direction, and the stability of the frame assembly in the moving process is ensured. Therefore, the lens driving structure effectively solves the problem of poor usability of the anti-shake structure of the optical lens in the prior art.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

FIG. 1 shows a schematic diagram of a lens driving structure according to one embodiment of the present application;

FIG. 2 shows an exploded view of the lens driving structure of FIG. 1;

FIG. 3 is a schematic view showing an internal structure of the lens driving structure of FIG. 1;

FIG. 4 is a schematic view showing the positional relationship among the lens support body, the frame assembly, the spacing connector, and the first magnetic attraction sheet of the lens driving structure in FIG. 1;

FIG. 5 is a schematic diagram showing the positional relationship of the frame assembly and the second drive assembly of the lens drive structure of FIG. 1;

FIG. 6 is a schematic diagram showing the positional relationship among the frame assembly, the second driving magnet, the limiting connecting member and the guide body of the lens driving structure of FIG. 1;

FIG. 7 is a schematic diagram showing the positional relationship among the lens support body, the first driving magnet and the balls of the lens driving structure in FIG. 1;

FIG. 8 shows a schematic structural view of a movable frame of the lens driving structure in FIG. 1;

FIG. 9 is a schematic diagram showing the positional relationship between the base body and the guide body of the lens driving structure of FIG. 1;

fig. 10 is a schematic diagram showing a positional relationship between a base body and a guide body of a lens driving structure according to another embodiment of the present application.

Wherein the above figures include the following reference numerals:

10. a housing; 20. a base assembly; 21. a base body; 22. a base frame; 30. a lens support; 31. a second chute; 40. a frame assembly; 41. a first chute; 42. a first connection protrusion; 50. a first drive assembly; 51. a first drive magnet; 60. a second drive assembly; 61. a second drive magnet; 62. a second driving coil; 70. a guide assembly; 71. a guide body; 80. a movable frame; 81. a guide groove; 82. a first side; 83. a second side; 84. a third side; 85. a fourth side; 90. a limit connecting piece; 100. a slide shaft; 200. a ball; 300. a first magnetic sheet; 400. and the second magnetic attraction piece.

Detailed Description

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

It is noted that 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 unless otherwise indicated.

In the present application, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present application.

In order to solve the problem of poor usability of an anti-shake structure of an optical lens in the prior art, the application provides a lens driving structure, an imaging device and a mobile terminal.

The image pickup device of the present application has the following lens driving structure, and the mobile terminal of the present application may be a mobile phone, a tablet computer, a notebook computer, or the like having the image pickup device of the present application.

As shown in fig. 1 to 10, the lens driving structure of the present application includes a housing 10 and a base assembly 20, wherein the housing 10 is covered on the base assembly 20 and forms a receiving space with the base assembly 20, and the lens driving structure further includes a lens supporting body 30, a frame assembly 40, a first driving assembly 50, a second driving assembly 60, at least two limiting connectors 90, a guide assembly 70 and a movable frame 80 disposed inside the receiving space. At least a portion of the lens support 30 is movably disposed within the frame assembly 40; at least a portion of the first drive assembly 50 is disposed on the lens support 30 and at least another portion of the first drive assembly 50 is disposed on the frame assembly 40; at least a portion of the second drive assembly 60 is disposed on the frame assembly 40 and at least another portion of the second drive assembly 60 is disposed on the base assembly 20; one end of the limit connecting piece 90 is connected with the frame assembly 40, the other end of the limit connecting piece 90 is connected with the base assembly 20, and a part of the first driving assembly 50 arranged on the frame assembly 40 is electrically connected with the base assembly 20 through the limit connecting piece 90; at least a portion of the guide assembly 70 is disposed on the frame assembly 40 and at least another portion of the guide assembly 70 is disposed on the base assembly 20; the movable frame 80 is disposed at a side of the frame assembly 40 remote from the lens support body 30; when the second driving assembly 60 is powered on, the frame assembly 40 drives the lens support 30 to move along the X-axis and/or Y-axis, and the frame assembly 40 and the part of the guiding assembly 70 disposed on the frame assembly 40 move relative to the movable frame 80 and/or the frame assembly 40, the part disposed on the frame assembly 40 and the movable frame 80 move relative to the base assembly 20.

When the lens driving structure of the present application is used, since at least a part of the lens support 30 is movably disposed inside the frame assembly 40, the lens support 30 can be moved in the Z-axis direction with respect to the frame assembly 40 when AF driving is performed. When the anti-shake driving is required, the second driving assembly 60 may be energized, so that the frame assembly 40 can drive the lens support 30 to perform the anti-shake motion in the XY plane. Meanwhile, when the frame assembly 40 drives the lens support body 30 to perform anti-shake motion in the XY plane, the frame assembly 40 and a part of the guide assembly 70 arranged on the frame assembly 40 move relative to the movable frame 80, and the frame assembly 40, a part of the guide assembly arranged on the frame assembly 40 and the movable frame 80 move relative to the base assembly 20, so that motion guiding and limiting effects on the frame assembly 40 can be achieved through interaction between the guide assembly 70 and the movable frame 80, and meanwhile friction force between the frame assembly 40 and the base assembly 20 can be effectively reduced, and anti-shake motion effects are improved. Meanwhile, since the lens driving structure of the present application further has the limiting connection member 90, the frame assembly 40 can be provided with a pre-tightening force by the limiting connection member 90 and limited in the Z-axis direction, thereby ensuring stability of the frame assembly 40 during movement. Therefore, the lens driving structure effectively solves the problem of poor usability of the anti-shake structure of the optical lens in the prior art.

And, when the first drive assembly 50 is energized, the lens support 30 moves along the Z-axis relative to the frame assembly 40. Meanwhile, the electrical connection of the first driving assembly 50 is achieved by using the limit connector 90 in the present application, thus increasing the stability of the lens driving structure compared to the conventional manner of using the wire.

In one embodiment of the present application, the first driving assembly 50 includes a first driving magnet 51 and a first driving coil, the first driving magnet 51 being disposed on a circumferential outer side wall of the lens support body 30; the first driving coil is disposed on the frame assembly 40 corresponding to the first driving magnet 51 and electrically connected to the limit connector 90. And, the second driving assembly 60 includes: at least two second driving magnets 61 and at least two second driving coils 62, the second driving magnets 61 being disposed on the frame assembly 40; the second driving coils 62 are the same as the second driving magnets 61 in number and are disposed on the base assembly 20 corresponding to the second driving magnets 61. Preferably, the number of the second driving magnets 61 and the second driving coils 62 is two. In addition, in the present embodiment, through the interaction of the two second driving magnets 61 and the two second driving coils 62, the acting forces in the X-axis direction and the Y-axis direction can be provided for the frame assembly 40, so that the frame assembly 40 can be ensured to drive the lens support body 30 to perform the anti-shake motion.

Specifically, the first driving magnet 51 and the second driving magnet 61 are respectively distributed on different sidewalls of the frame assembly 40. Through the arrangement, the internal structure of the lens driving structure can be ensured to be more compact, and the miniaturization design of the lens driving structure is facilitated. Meanwhile, through the arrangement, the mutual interference among the first driving magnet 51, the first driving coil, the second driving magnet 61 and the second driving coil 62 can be effectively avoided, so that the operation of the lens driving structure is ensured to be more stable.

In another embodiment of the present application, the number of the second driving magnets 61 and the second driving coils 62 is four. In the present embodiment, two second driving coils 62 and second driving magnets 61 are respectively disposed on a set of opposite side arms of the frame assembly 40 and the lens support 30, and the two driving coils and the two driving magnets respectively provide forces in different directions for the frame assembly 40.

In one embodiment of the present application, the limit connectors 90 are tension springs, and the limit connectors 90 are four, at least two of which are electrically connected to portions of the first drive assembly 50 on the frame assembly 40. An included angle greater than 0 degrees is formed between the length direction of the limit connector 90 and the Z axis. Moreover, it should be noted that, when the number of the first driving coils changes, the number of the limiting connectors 90 may change accordingly, so as to ensure that all the first driving coils can be electrically connected.

Preferably, four tension springs are provided at four different corners of the base assembly 20, respectively, and the different tension springs are connected to different corners of the frame assembly 40, respectively. The frame assembly 40 is provided with four first connection protrusions 42 corresponding to the four tension springs, the base assembly 20 is provided with second connection protrusions corresponding to the four tension springs, and two ends of different tension springs are respectively connected with different first connection protrusions 42 and different second connection protrusions. It is further preferred that the same tension springs are connected to the base assembly 20 and the frame assembly 40 at the corresponding two corners, respectively, and the first connection protrusions 42 are provided at the corners of the frame assembly 40, thereby achieving connection of the tension springs to the corresponding first connection protrusions 42.

In the present application, the guide assembly 70 includes a plurality of guide bodies 71, a plurality of guide bodies 71 are respectively disposed on the frame assembly 40 and the base assembly 20, and a plurality of guide grooves 81 are respectively disposed on the movable frame 80 corresponding to the plurality of guide bodies 71, and each guide body 71 is engaged with at least one different guide groove 81.

Alternatively, the extending direction of the guide body 71 provided on the frame assembly 40 and the extending direction of the guide body 71 provided on the base assembly 20 are perpendicular to each other, and the extending direction of the guide groove 81 is the same as the extending direction of the corresponding guide body 71.

Optionally, a guide groove 81 that cooperates with the guide body 71 on the frame assembly 40 is provided at a side of the movable frame 80 near the frame assembly 40.

Optionally, a guide groove 81 that mates with the guide body 71 on the base assembly 20 is provided on the side of the movable frame 80 remote from the frame assembly 40.

Alternatively, the number of guides 71 on the frame assembly 40 is the same as the number of guides 71 on the base assembly 20.

Alternatively, one of the guide body 71 on the frame assembly 40 and the guide body 71 on the base assembly 20 extends in the X-axis direction, and the other extends in the Y-axis direction.

Alternatively, the number of the guide bodies 71 is the same as and corresponds to the number of the guide grooves 81 one by one, the length of the guide grooves 81 is smaller than the length of the guide bodies 71, and both ends in the length direction of the guide bodies 71 protrude from both ends in the length direction of the corresponding guide grooves 81.

In one embodiment of the present application, the movable frame 80 is in a quadrilateral shape and includes a first side 82, a second side 83, a third side 84 and a fourth side 85 which are sequentially connected, the first side 82 and the third side 84 are parallel to each other, the second side 83 and the fourth side 85 are parallel to each other, the frame assembly 40 and the base assembly 20 are respectively provided with four guide bodies 71, the frame assembly 40 is respectively provided with two guide bodies 71 corresponding to the first side 82 and the third side 84, the base assembly 20 is respectively provided with two guide bodies 71 corresponding to the second side 83 and the fourth side 85, and the two guide bodies 71 corresponding to the same side are arranged at intervals along the length direction of the corresponding side. That is, two guiding bodies 71 corresponding to the first side 82 are disposed at intervals along the length direction of the first side 82, and other guiding bodies are disposed in such a manner, so that the description thereof is omitted. Of course, in the present application, two guiding bodies corresponding to the same side edge may be replaced by one guiding body with a longer length, or the two guiding bodies may be integrally formed.

That is, the movement direction of the frame assembly 40 can be effectively limited by the cooperation of the guide body 71 and the guide groove 81 in the present application, thereby effectively securing the stability of the movement of the lens driving structure. In the present application, when the frame assembly 40 moves in the XY plane, the guide body 71 on the frame assembly 40 can slide with respect to the guide groove 81 of the movable frame 80, and the movable frame 80 and the guide body 71 on the base assembly 20 are relatively stationary. In addition, the guide body 71 on the frame assembly 40 can also drive the movable frame 80 to move together with the guide body 71 on the base assembly 20 through matching with the corresponding guide groove 81, and at this time, the guide groove 81 on the movable frame 80 moves relative to the guide body 71 of the base assembly 20. Of course, the two movement modes can be performed simultaneously. Alternatively, the guide body 71 has a cylindrical shape. And, the guide body 71 is made of a ceramic material. By this arrangement, the friction between the guide body 71 and the guide groove 81 can be effectively reduced, thereby ensuring the sensitivity of the movement of the lens driving structure. Of course, the guide body 71 may also be made of a high-strength metal non-magnetic material, and lubrication may be increased by coating the surface with teflon.

Alternatively, the movable frame 80 is made of a metal material. Or the movable frame 80 is made of a nonmetallic material, and the surface of the movable frame 80 is provided with a teflon coating. The purpose of this is to reduce the friction between the guide body 71 and the guide groove 81. It should be noted that the movable frame 80 needs to be made of a non-magnetic material.

Specifically, avoidance gaps are respectively provided between the movable frame 80 and the base assembly 20, and between the movable frame 80 and the frame assembly 40. By this arrangement, the contact between the movable frame 80 and the base assembly 20 and the frame assembly 40 can be effectively reduced, thereby reducing the friction between the movable frame 80 and the base assembly 20 and the frame assembly 40.

In an embodiment of the present application, the lens driving structure further includes at least two sliding shafts 100, at least one sliding shaft 100 is respectively disposed at two ends of the side wall of the frame assembly 40 where the first driving magnet 51 is located, the axial direction of the sliding shaft 100 is the same as the Z-axis, and the sliding shaft 100 abuts against the lens supporting body 30. Further, the frame assembly 40 is provided with a first sliding groove 41 corresponding to the sliding shaft 100, the lens support 30 is provided with a second sliding groove 31 corresponding to the sliding shaft 100, and the sliding shafts 100, the first sliding groove 41 and the second sliding groove 31 are the same in number and in one-to-one correspondence. The lens driving structure further includes a plurality of balls 200, two rows of balls 200 arranged along the Z-axis direction are disposed on the inner side wall of the second sliding groove 31, and a portion of the sliding shaft 100 located in the second sliding groove 31 abuts against the balls 200. By providing the slide shaft 100, friction between the frame assembly 40 and the lens support body 30 can be effectively reduced when the lens support body 30 moves relative to the frame assembly 40, thereby ensuring smoother movement of the lens support body 30. Meanwhile, the mutual cooperation among the sliding shaft 100, the first sliding groove 41 and the second sliding groove 31 can also play a role in guiding the movement of the lens support body 30, so that the stability of the movement of the lens support body 30 is ensured.

Specifically, the lens driving structure further includes a first magnetic attraction piece 300, and the first magnetic attraction piece 300 is disposed at a side of the first driving coil away from the first driving magnet 51. By providing this, the first magnet piece 300 can interact with the first drive magnet 51, and the lens support 30 can be attracted to the slide shaft 100 side and can be brought into contact with the slide shaft 100. Of course, the first magnetic sheet 300 may be hollowed out in order to avoid excessive attraction of the first magnetic sheet 300.

The lens driving structure further includes a plurality of second magnetic attraction pieces 400, the second magnetic attraction pieces 400 are disposed on the base assembly 20 corresponding to the second driving magnets 61, and each second driving magnet 61 corresponds to at least one different second magnetic attraction piece 400. Through such setting, can guarantee that the guide body on the frame component and the guide body on the base subassembly can laminate more with the movable frame to can prevent the drunkenness of movable frame in the Z axle direction, and guarantee the guide effect of movable frame to different guide bodies in X axle or Y axle direction. In one embodiment of the present application, each of the second driving magnets is respectively matched with a different second magnetic attraction piece.

Preferably, the two rows of balls 200 in the same second chute 31 have the same number and one-to-one correspondence, the two balls 200 corresponding to each other have the same height in the Z-axis direction, and an included angle between a connecting line of a center of one ball 200 and the sliding shaft 100 and a connecting line of a center of the other ball 200 and the sliding shaft 100 is greater than or equal to 60 degrees and less than or equal to 90 degrees. By this arrangement, the lens support body 30 can be effectively prevented from being jammed or unstable in abutment during the movement relative to the frame assembly 40.

Alternatively, the base assembly 20 includes a base body 21 and a base frame 22 in the present application, and the base body 21 is used to mount the guide body 71, and the base frame 22 is used to mount the second driving coil 62. While the second driving coil 62 can be electrically connected with the base body 21 through the PCB board. Of course, in the present application, the first driving coil may be electrically connected before another PCB board, and then electrically connected to the limiting connector 90 through the PCB board.

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

1. the problem of poor usability of an anti-shake structure of the optical lens in the prior art is effectively solved;

2. simple structure, stable performance.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.

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 also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated 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 the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (22)

1. The utility model provides a lens drive structure, its characterized in that includes shell (10) and base subassembly (20), shell (10) cover is established on base subassembly (20) and with base subassembly (20) form the accommodation space, lens drive structure is still including setting up inside the accommodation space:

a lens support (30);

-a frame assembly (40), at least a portion of the lens support (30) being movably arranged inside the frame assembly (40);

-a first drive assembly (50), at least a portion of the first drive assembly (50) being disposed on the lens support (30), at least another portion of the first drive assembly (50) being disposed on the frame assembly (40);

-a second drive assembly (60), at least a portion of the second drive assembly (60) being disposed on the frame assembly (40), at least another portion of the second drive assembly (60) being disposed on the base assembly (20);

the device comprises at least two limit connecting pieces (90), wherein one end of each limit connecting piece (90) is connected with the corresponding frame assembly (40), the other end of each limit connecting piece (90) is connected with the corresponding base assembly (20), and a part of the first driving assembly (50) arranged on the corresponding frame assembly (40) is electrically connected with the corresponding base assembly (20) through the corresponding limit connecting piece (90);

-a guiding assembly (70), at least a portion of the guiding assembly (70) being provided on the frame assembly (40), at least another portion of the guiding assembly (70) being provided on the base assembly (20);

a movable frame (80), the movable frame (80) being disposed on a side of the frame assembly (40) remote from the lens support (30);

when the second driving assembly (60) is electrified, the frame assembly (40) drives the lens supporting body (30) to move along the X-axis and/or Y-axis direction, and the frame assembly (40) and part of the guide assembly (70) arranged on the frame assembly (40) move relative to the movable frame (80) and/or the frame assembly (40), part of the guide assembly arranged on the frame assembly (40) and part of the movable frame (80) move relative to the base assembly (20).

2. The lens driving structure according to claim 1, wherein the lens support body (30) moves along the Z-axis relative to the frame assembly (40) when the first driving assembly (50) is energized.

3. The lens driving structure according to claim 1, wherein an included angle greater than 0 degrees is formed between the length direction of the limit link (90) and the Z-axis.

4. The lens driving structure according to claim 1, wherein the limit connection member (90) is a tension spring, the limit connection member (90) is four, and at least two of the tension springs are electrically connected to a portion of the first driving assembly (50) on the frame assembly (40).

5. Lens driving structure according to claim 4, characterized in that four of said tension springs are provided at four different corners of said base assembly (20), respectively, and that different ones of said tension springs are connected at different corners of said frame assembly (40), respectively.

6. The lens driving structure according to claim 4, wherein the frame assembly (40) is provided with four first connecting protrusions (42) corresponding to the four tension springs, the base assembly (20) is provided with second connecting protrusions corresponding to the four tension springs, and both ends of different tension springs are respectively connected with different first connecting protrusions (42) and different second connecting protrusions.

7. The lens driving structure according to any one of claims 1 to 6, wherein the guide assembly (70) includes a plurality of guide bodies (71), a plurality of guide bodies (71) are provided on the frame assembly (40) and the base assembly (20), respectively, and the movable frame (80) is provided with a plurality of guide grooves (81) corresponding to the plurality of guide bodies (71), respectively, each guide body (71) being mated with at least one different guide groove (81).

8. The lens driving structure according to claim 7, wherein the extending direction of the guide body (71) provided on the frame assembly (40) and the extending direction of the guide body (71) provided on the base assembly (20) are perpendicular to each other, and the extending direction of the guide groove (81) is the same as the extending direction of the corresponding guide body (71).

9. The lens driving structure as claimed in claim 7, wherein,

the guide groove (81) matched with the guide body (71) on the frame assembly (40) is arranged on one side of the movable frame (80) close to the frame assembly (40);

the guide groove (81) matched with the guide body (71) on the base assembly (20) is arranged on one side of the movable frame (80) away from the frame assembly (40).

10. The lens driving structure as claimed in claim 7, wherein,

the number of the guide bodies (71) on the frame assembly (40) is the same as the number of the guide bodies (71) on the base assembly (20); and/or

One of the guide body (71) on the frame assembly (40) and the guide body (71) on the base assembly (20) extends in the X-axis direction, and the other extends in the Y-axis direction.

11. The lens driving structure according to claim 7, wherein the number of the guide bodies (71) is the same as the number of the guide grooves (81) and corresponds one to one, the length of the guide grooves (81) is smaller than the length of the guide bodies (71), and both ends in the length direction of the guide bodies (71) protrude from both ends in the length direction of the corresponding guide grooves (81).

12. The lens driving structure according to claim 7, wherein the movable frame (80) is quadrilateral and comprises a first side (82), a second side (83), a third side (84) and a fourth side (85) which are sequentially connected, the first side (82) and the third side (84) are parallel to each other, the second side (83) and the fourth side (85) are parallel to each other, the frame assembly (40) and the base assembly (20) are respectively provided with four guide bodies (71), the frame assembly (40) is respectively provided with two guide bodies (71) corresponding to the first side (82) and the third side (84), the base assembly (20) is respectively provided with two guide bodies (71) corresponding to the second side (83) and the fourth side (85), and the two guide bodies (71) corresponding to the same side are arranged at intervals along the length direction of the corresponding sides.

13. The lens driving structure according to any one of claims 1 to 6, wherein the first driving assembly (50) comprises:

a first drive magnet (51), the first drive magnet (51) being provided on a circumferential outer side wall of the lens support body (30);

the first driving coil is arranged on the frame assembly (40) corresponding to the first driving magnet (51) and is electrically connected with the limit connecting piece (90).

14. The lens driving structure according to claim 13, wherein the second driving assembly (60) comprises:

at least two second drive magnets (61), the second drive magnets (61) being arranged on the frame assembly (40);

and the second driving coils (62) are the same as the second driving magnets (61) in number and are arranged on the base assembly (20) corresponding to the second driving magnets (61).

15. The lens driving structure according to claim 14, wherein the first driving magnet (51) and the second driving magnet (61) are distributed on different side walls of the frame assembly (40), respectively.

16. The lens driving structure according to claim 13, further comprising at least two slide shafts (100), wherein at least one slide shaft (100) is provided at each of both ends of a side wall of the frame assembly (40) where the first driving magnet (51) is located, an axial direction of the slide shaft (100) is the same as the Z-axis, and the slide shaft (100) abuts against the lens support body (30).

17. The lens driving structure according to claim 16, wherein the frame assembly (40) is provided with a first sliding groove (41) corresponding to the sliding shaft (100), the lens supporting body (30) is provided with a second sliding groove (31) corresponding to the sliding shaft (100), and the sliding shafts (100), the first sliding grooves (41) and the second sliding grooves (31) are the same in number and in one-to-one correspondence.

18. The lens driving structure according to claim 17, further comprising a plurality of balls (200), wherein the inner side wall of the second slide groove (31) is provided with two rows of the balls (200) aligned in the Z-axis direction, and a portion of the slide shaft (100) located in the second slide groove (31) abuts against the balls (200).

19. The lens driving structure according to claim 18, wherein the two rows of balls (200) in the same second chute (31) have the same number and are in one-to-one correspondence, the two balls (200) corresponding to each other have the same height in the Z-axis direction, and an included angle between a connecting line of a center of one ball (200) and the sliding shaft (100) and a connecting line of a center of the other ball (200) and the sliding shaft (100) is greater than or equal to 60 degrees and less than or equal to 90 degrees.

20. The lens driving structure according to claim 13, further comprising a first magnetic attraction piece (300), the first magnetic attraction piece (300) being disposed on a side of the first driving coil away from the first driving magnet (51).

21. An image pickup apparatus comprising the lens driving structure according to any one of claims 1 to 20.

22. A mobile terminal comprising the image pickup device according to claim 21.