CN114967031A

CN114967031A - Lens driving device, camera device and mobile terminal

Info

Publication number: CN114967031A
Application number: CN202110867191.1A
Authority: CN
Inventors: 王建华; 张晓良; 孔令宏
Original assignee: Shanghai Xinmai Electronic Technology Co ltd
Current assignee: Shanghai Xinmai Electronic Technology Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2022-08-30
Also published as: WO2023004913A1

Abstract

The invention provides a lens driving device, an image pickup device and a mobile terminal. Wherein, lens drive arrangement includes shell and base, and the shell cover establish on the base and with the base between form the accommodation space, lens drive arrangement still including setting up in the accommodation space: the lens seat is movably arranged in the accommodating space; the elastic support component is supported between the lens mount and the base or between the lens mount and the shell, and the elastic support component is electrified to enable at least one part of the elastic support component to deform and drive the lens mount to move along the Z-axis direction. The invention solves the problem of poor use performance of the voice coil motor of the camera device in the prior art.

Description

Lens driving device, camera device and mobile terminal

Technical Field

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

Background

Video cameras, or still cameras, typically employ a lens that is adjustable in focal length or auto-focus, and the adjustment is performed by changing the position of the lens, typically by a drive motor, to drive the lens for movement. At present, the automatic focusing of a camera head of a handheld camera device, especially a mobile phone, is basically completed by using a Voice Coil Motor (VCM), which is a system composed of a Coil and a magnet. The coil after being electrified is subjected to electromagnetic force in a magnetic field, the winding carrier is driven to linearly move along the optical axis direction (namely Z axis) of the lens under the action of the electromagnetic force, and the winding carrier finally stays at a position point when the resultant force of the electromagnetic force generated between the annular coil and the driving magnet and the elastic force of the upper spring and the lower spring reaches a phase equilibrium state.

Although the voice coil motor has the advantages of mature technology, low cost, low noise and the like, along with the increase of the requirement of the camera device on the camera shooting, the voice coil motor has the problems of magnetic interference, insufficient thrust and unstable structure and performance. For example: the double-shooting motor is developed and applied to various middle and high-end mobile phones, but certain puzzlement difficulty exists in the practical application process, particularly, a certain degree of magnetic interference phenomenon exists between two double-shooting motors, the normal performance of the effect of the double-shooting motors is influenced, the defect cannot be avoided by the voice coil motor, and meanwhile, various improvement schemes are easy to cause the complexity of the motor structure and the improvement of the assembly process difficulty; electric conduction and connection assembly among all parts in the voice coil motor are realized through modes such as welding, hot riveting, point gluing, coil circular telegram needs to be through last/lower spring intercommunication simultaneously, the route that leads to coil circular telegram is longer, because voice coil motor part number is more, need welding, hot riveting, point gluing department is more, when the cell-phone is in case receiving external force such as falling the striking, the motor is because external force vibrates and leads to inside welding point or point gluing department to pull phenomenon such as drop or spring deformation easily, the inside electric property of final motor and integrated configuration receive destruction, influence the performance of motor normal performance, bring unfavorable consequence for the shooting effect.

Therefore, the voice coil motor of the imaging device in the prior art has poor use performance.

Disclosure of Invention

The invention mainly aims to provide a lens driving device, a camera device and a mobile terminal, and aims to solve the problem that a voice coil motor of the camera device in the prior art is poor in service performance.

In order to achieve the above object, according to one aspect of the present invention, there is provided a lens driving device including a housing and a base, the housing being covered on the base and forming an accommodating space with the base, the lens driving device further including: the lens seat is movably arranged in the accommodating space; the elastic support component is supported between the lens mount and the base or between the lens mount and the shell, and the elastic support component is electrified to enable at least one part of the elastic support component to deform and drive the lens mount to move along the Z-axis direction.

Further, the elastic support assembly includes: an elastic support; extrusion structure, extrusion structure circular telegram in order to provide the extrusion force to the elastic support body, when the elastic support body received the extrusion structure extrusion, the elastic support body produced deformation and drove the lens mount and followed the Z axle direction motion.

Furthermore, the elastic support body is annular and is sleeved with the periphery of the lens seat.

Further, the lens mount includes: the cylindrical structure is internally used for accommodating the lens; the abutting flange is arranged at one end, far away from the base, of the cylindrical structure, the elastic supporting body is sleeved on the periphery side of the cylindrical structure, and one end, far away from the base, of the elastic supporting body abuts against the abutting flange.

Further, the diameter of the middle portion of the elastic support in the Z-axis direction is larger than the diameters of both ends of the elastic support.

Further, the elastic support body is made of a silicone material or a rubber material.

Further, the elastic support body has a filling space inside, and the filling space is filled with a liquid or a gas.

Further, the pressing structure is arranged on the outer periphery side of the elastic supporting body; or the elastic support body is provided with an embedded groove, and at least one part of the extrusion structure is embedded in the embedded groove.

Further, the extrusion structure includes: the SMA wire is wound on the circumferential outer side wall of the elastic support body; and the end pin assembly is arranged on the base, and two ends of the SMA wire are respectively connected with the end pin assembly.

Furthermore, the terminal pin assembly comprises at least two wiring terminal pins, one side of the base, which faces the lens mount, is provided with a wiring protrusion, and one end of one of the wiring terminal pins, which is far away from the wiring protrusion from the base, penetrates through the base and the wiring protrusion respectively and extends out of the wiring protrusion.

Further, one side of the base facing the lens mount is provided with a supporting convex ring, and at least one part of the elastic supporting body is connected with the supporting convex ring.

Furthermore, one side of the base facing the lens mount is also provided with at least one guide post, and the abutting flange is provided with at least one guide hole matched with the guide post.

Furthermore, the elastic support bodies are multiple, the extrusion structures are multiple, the multiple extrusion structures and the multiple elastic support bodies are arranged in a one-to-one correspondence mode, and the multiple elastic support bodies are arranged along the circumferential direction of the lens mount at intervals.

Furthermore, the lens driving device further comprises a spring plate, wherein the spring plate is arranged between the lens mount and the shell and provides a reset force for the lens mount to move towards one side of the base.

Furthermore, the elastic sheet is connected with one end of the lens mount far away from the base in an abutting mode, one side, facing the lens mount, of the base is further provided with a fixing column, and the elastic sheet is connected with the fixing column.

Furthermore, the fixed column is a plurality of, and every bight department of base is provided with at least one fixed column respectively.

Further, the shell fragment includes: the extrusion part is annular and is abutted with the lens seat; connecting portion, connecting portion are a plurality of, a plurality of connecting portion and a plurality of fixed column one-to-one, and the one end and the extrusion portion of connecting portion are connected, and the other end and the fixed column of connecting portion are connected.

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

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

By applying the technical scheme of the invention, the lens driving device comprises a shell and a base, wherein the shell is covered on the base and forms an accommodating space with the base, and the lens driving device also comprises a lens seat and an elastic supporting component which are arranged in the accommodating space. The lens seat is movably arranged in the accommodating space; the elastic supporting component is supported between the lens mount and the base or between the lens mount and the shell, and the elastic supporting component is electrified to enable at least one part of the elastic supporting component to deform and drive the lens mount to move along the Z-axis direction.

When using the lens drive arrangement in this application, because the camera lens drive arrangement has the lens mount, so can make mobile terminal's camera lens install on the lens mount to owing to still have the elastic support subassembly, so can drive the lens mount through the deformation of elastic support subassembly and remove, thereby drive the camera lens and move along Z axle direction, and then realize the auto-focusing function. That is, in the present application, the driving coil and the driving magnet portion of the voice coil motor are replaced by the elastic support member of the lens driving apparatus. In addition, the lens driving device in the application is simpler than the structure of the existing voice coil motor because structures such as a spring matched with the driving magnet and the driving coil are not needed in the application. Meanwhile, no magnet exists, so that the problem of magnetic interference inside or outside is avoided. And, the lens drive arrangement in this application does not have the magnetic circuit design problem, and whole stroke dynamics average thrust is great than the electromagnetism mode, consequently compares more efficient with current voice coil motor. And, there is not the upper and lower spring design of voice coil motor, falls and test such as cylinder and does not have spring deformation, nickel or foreign matter dropout problem. And because the elastic support component has a damping effect, the lens driving device in the application does not need to add damping glue. In the present application, since the lens mount is driven only by the elastic support member, fewer components are required as compared with the electromagnetic driving method of the voice coil motor, and therefore, it is possible to contribute to downsizing of the lens driving device. Therefore, the lens driving device in the application effectively solves the problem that the voice coil motor of the camera device in the prior art is poor in use performance.

Drawings

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

fig. 1 shows a schematic configuration of a lens driving apparatus according to an embodiment of the present invention;

fig. 2 shows an exploded view of the lens driving apparatus of fig. 1;

fig. 3 is a schematic diagram showing a positional relationship among a base, an elastic support, and a lens holder of the lens driving device of fig. 1;

fig. 4 is a schematic diagram illustrating a positional relationship among the base, the pressing structure, the lens holder, and the resilient plate of the lens driving apparatus in fig. 1.

Wherein the figures include the following reference numerals:

10. a housing; 20. a base; 21. a wiring bump; 22. a supporting convex ring; 23. a guide post; 24. fixing a column; 30. a lens mount; 31. a cylindrical structure; 32. an abutment flange; 321. a guide hole; 40. an elastic support member; 41. an elastic support; 42. extruding the structure; 421. SMA wire; 422. a terminal pin assembly; 4221. a terminal pin; 50. a spring plate; 51. a pressing section; 52. a connecting portion; 60. and (5) a lens.

Detailed Description

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

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

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

In order to solve the problem that the voice coil motor of the camera device in the prior art is poor in service performance, the application provides a lens driving device, a camera device and a mobile terminal.

Note that the mobile terminal in the present application has an image pickup device, and the image pickup device in the present application has a lens driving device described below.

As shown in fig. 1 to 4, the lens driving device in the present application includes a housing 10 and a base 20, the housing 10 is covered on the base 20 and forms an accommodating space with the base 20, and the lens driving device further includes a lens holder 30 and an elastic support assembly 40 disposed in the accommodating space. The lens mount 30 is movably arranged in the accommodating space; the elastic support assembly 40 is supported between the lens holder 30 and the base 20 or between the lens holder 30 and the housing 10, and the elastic support assembly 40 is energized to deform at least a portion of the elastic support assembly 40 and move the lens holder 30 along the Z-axis direction.

When the lens driving device in the application is used, the lens driving device is provided with the lens seat 30, so that the lens of the mobile terminal can be installed on the lens seat 30, and the elastic supporting assembly 40 is further arranged, so that the lens seat 30 can be driven to move through the deformation of the elastic supporting assembly 40, the lens is driven to move along the Z-axis direction, and the automatic focusing function is further realized. That is, in the present application, the driving coil and the driving magnet portion of the voice coil motor are replaced by the elastic support member 40 of the lens driving apparatus. In addition, the lens driving device in the application is simpler than the structure of the existing voice coil motor because structures such as a spring matched with the driving magnet and the driving coil are not needed in the application. Meanwhile, no magnet exists, so that the problem of magnetic interference inside or outside is avoided. And, lens drive arrangement in this application does not have the magnetic circuit design problem, and whole stroke dynamics average thrust is great than the electromagnetism mode, consequently compares more efficient with current voice coil motor. And, there is not the upper and lower spring design of voice coil motor, falls and test such as cylinder and does not have spring deformation, nickel or foreign matter dropout problem. And since the elastic support member 40 itself has damping function, the lens driving device in this application does not need to add damping glue. In the present application, since the lens mount 30 is driven only by the elastic support member 40, fewer components are required as compared with the electromagnetic driving method of the voice coil motor, which can contribute to the miniaturization of the lens driving device. Therefore, the lens driving device in the application effectively solves the problem that the voice coil motor of the camera device in the prior art is poor in service performance.

In the embodiments of the present application described below, the elastic support member 40 is disposed between the lens holder 30 and the base 20.

In the present application, the surface of the housing 10 opposite to the base 20 has an opening structure, and the opening structure can avoid the lens of the mobile terminal.

In one particular embodiment of the present application, the elastic support assembly 40 includes an elastic support body 41 and a pressing structure 42. The pressing structure 42 is powered on to provide a pressing force to the elastic supporting body 41, and when the elastic supporting body 41 is pressed by the pressing structure 42, the elastic supporting body 41 is deformed and drives the lens holder 30 to move along the Z-axis direction. That is to say, in the lens driving device in the present application, when the lens needs to be focused, the pressing structure 42 is powered on and presses the elastic supporting body 41, so that the lens holder 30 is driven to move by the deformation of the elastic supporting body 41, and the lens holder 30 can drive the lens to move along the Z-axis direction. Of course, the pressing structure 42 may be provided in other forms in the present application as long as the pressing structure 42 can be controlled to press the elastic support 41.

It should be pointed out that can also make camera device fall the impulsive force that the in-process received little through setting up elastic support body 41 in this application to can play certain buffering antivibration effect, simultaneously, fall and test such as cylinder do not have nickel or foreign matter problem of droing, can protect motor inner structure, also need not additionally to set up the damping again and glues, both simplify assembly process and can improve structural stability.

Alternatively, the elastic support 41 is annular, and the elastic support 41 is sleeved on the periphery of the lens holder 30. Through setting up like this, not only can make things convenient for being connected of lens mount 30 and elastic support 41, can also guarantee that elastic support 41 produces the deformation back receiving the extrusion force of extrusion structure 42, lens mount 30 can more even atress to guarantee that the motion of lens mount 30 can not produce the skew, in order to guarantee mobile terminal's focusing effect and shooting effect. On the other hand, the elastic support 41 may be regarded as a ring, and the elastic support 41 may be configured to prevent dust, thereby improving the sealing performance of the lens driving device.

Of course, it should be noted that the shape of the elastic support 41 is not limited to a ring shape or a cylindrical shape in the present application, and the elastic support 41 may be provided in other shapes, such as a regular polygonal cylindrical structure 31, according to the actual design requirements.

In one particular embodiment of the present application, the lens holder 30 includes a cylindrical structure 31 and an abutment flange 32. The cylindrical structure 31 is used for accommodating the lens 60; the abutting flange 32 is disposed at one end of the cylindrical structure 31 far away from the base 20, the elastic supporting body 41 is sleeved on the outer periphery of the cylindrical structure 31, and one end of the elastic supporting body 41 far away from the base 20 abuts against the abutting flange 32. In the embodiment, the tubular structure 31 is configured to accommodate not only the lens of the mobile terminal, but also to make the elastic support 41 fit on the lens holder 30 more easily, and to ensure that the elastic support 41 fits the tubular structure 31 more closely. And through setting up butt flange 32 then can guarantee that the one end of elastic support 41 can with butt flange 32 butt, can guarantee like this that elastic support 41 produces the deformation back in the atress, elastic support 41 can drive the camera lens mount 30 and move together, and the relative camera lens mount 30 condition of moving of elastic support 41 can not appear to guarantee lens drive arrangement's stable performance.

Alternatively, the diameter of the middle portion of the elastic support 41 in the Z-axis direction is larger than the diameters of both ends of the elastic support 41. In the present application, the elastic supporting body 41 is configured to extend along the Z-axis direction mainly through the deformation of the middle portion, so that the elastic supporting body 41 can drive the lens holder 30 to achieve a large stroke driving. In addition, by means of the arrangement, after the elastic supporting body 41 is stressed to deform, the diameter of the middle part of the elastic supporting body 41 cannot be too small, so that the elastic supporting body is guaranteed not to deflect after being subjected to extrusion force, the stability of the elastic supporting body 41 is further guaranteed, the focusing stability of the lens supporting body is guaranteed, the shooting effect of the mobile terminal is guaranteed, and the shot image is prevented from being blurred.

Alternatively, the elastic support 41 is made of a silicone material or a rubber material. By such an arrangement, the overall weight of the lens driving device can be reduced, so that less force is required to drive the lens to move, and the sensitivity of the lens driving device can be improved.

Of course, since there is no need to consider the problem of electromagnetic interference in the present application, the db gain of the mobile terminal antenna can be improved by making the lens driving device of a plastic material.

For the material of the housing 10, in the conventional voice coil motor, in view of enhancing the magnetic field strength, the housing 10 usually needs a magnetic material to achieve the effect of blocking and concentrating magnetism. The housing 10 in this application may be made of magnetic, non-magnetic metal, or non-metal material, such as plastic material, and the flexibility of selecting the material of the housing 10 is strong.

For the shape of the housing 10, the conventional voice coil motor needs a special-shaped magnet to achieve the effect of magnetic induction driving in consideration of the matching and assembling process of the magnet and the coil, but the special-shaped magnet imposes a relatively high requirement on the process and is difficult to achieve. The housing 10 of the present application may implement motors having different configurations.

Specifically, the elastic support body 41 has a filling space inside, and the inside of the filling space is filled with liquid or gas. Through such an arrangement, the deformation performance of the elastic support body 41 can be ensured, and the supporting effect of the elastic support body 41 can be ensured through the filled liquid or gas, so that the elastic support body can have a certain shape when not subjected to the extrusion force.

Alternatively, the pressing structure 42 is disposed on the outer periphery of the elastic supporting body 41, or a pre-buried groove is disposed on the elastic supporting body 41, and at least a portion of the pressing structure 42 is embedded in the pre-buried groove. In one embodiment of the present application, the pressing structure 42 is disposed on the outer peripheral side of the elastic support body 41.

In one particular embodiment of the present application, the extrusion structure 42 includes SMA wires 421 and a terminal pin assembly 422. The SMA wire 421 is wound on the circumferential outer side wall of the elastic support body 41; the terminal pin assembly 422 is disposed on the base 20, and two ends of the SMA wire 421 are respectively connected to the terminal pin assembly 422. In this embodiment, the input and output ends of the SMA wire 421 are electrically connected to the terminal pin assembly 422, and the connection between the SMA wire 421 and the terminal pin assembly 422 may be welding or connection by using a clamping head, a fastening, or the like, as long as the connection stability between the input and output ends of the SMA wire 421 and the terminal pin assembly 422 is ensured.

Specifically, the lens driving device further includes a spring plate 50, and the spring plate 50 is disposed between the lens holder 30 and the housing 10 to provide a restoring force for the lens holder 30 to move to one side of the base 20. By such a configuration, when the elastic supporting body 41 does not receive the extrusion force of the extrusion structure 42, the lens holder 30 receives the acting force of the elastic sheet 50, and the force direction of the lens holder 30 points to one side of the base 20, that is, the elastic sheet 50 provides a pre-tightening force to the lens holder 30 in the present application, and after the elastic supporting body 41 deforms to drive the lens holder 30 to complete focusing, and when the lens holder 30 needs to return to the position before focusing, the acting force of the elastic sheet 50 on the lens holder 30 can accelerate the resetting speed of the lens holder 30, so as to improve the response speed of the lens driving device.

It should be noted that, in the present application, the elastic sheet 50 only provides the elastic force for the lens holder 30, so that the elastic sheet 50 does not need to be electrically connected, and thus the lens driving apparatus in the present application does not need to design a complicated circuit structure compared to a conventional voice coil motor.

In the present application, the end pin assembly 422 is energized to the SMA wire 421, and the SMA wire 421 generates heat after being energized, and according to the heat shrinkage and cold expansion characteristics of the SMA wire 421, the SMA wire 421 can apply radial pressure to the wound elastic support 41 to plastically deform the elastic support 41, and since the upper end and the lower end of the elastic support 41 are free ends, the deformation direction of the elastic support 41 is a length direction Z axis, and since the lower end of the elastic support 41 is in contact with the base 20, the Z axis deformation of the elastic support 41 is that the lens holder 30 is moved along the Z axis by pressing the lens holder 30, and the resultant force of the deformation of the elastic support 41 in different degrees and the pressure of the elastic sheet 50 in the Z axis direction forms a driving stroke of the lens holder 30, thereby achieving lens auto-focusing.

Optionally, the terminal pin assembly 422 includes at least two terminal pins 4221, and a side of the base 20 facing the lens holder 30 has a terminal protrusion 21, wherein an end of one terminal pin 4221 extends from an end of the base 20 away from the terminal protrusion 21, through the base 20 and the terminal protrusion 21, and protrudes out of the terminal protrusion 21.

Specifically, the side of the base 20 facing the lens holder 30 has a supporting convex ring 22, and at least a portion of the elastic support 41 is connected to the supporting convex ring 22. In the present application, the supporting convex ring 22 not only serves to provide the lens holder 30 and the elastic supporting body 41 with mounting positioning, but also serves to seal and prevent the elastic supporting body 41 from being bent or deflected.

Specifically, the side of the base 20 facing the lens holder 30 further has at least one guiding column 23, and the abutting flange 32 is provided with at least one guiding hole 321 matched with the guiding column 23. It should be noted that the lens holder 30 and the guide post 23 are always connected during the movement of the lens holder 30. That is, in the present application, the guiding columns 23 are provided to allow the lens holder 30 to be fitted over the guiding columns 23 by the fitting of the guiding holes 321 and the guiding columns 23, and to provide a guiding function for the movement of the lens holder 30 through the guiding columns 23 during the movement of the lens holder 30, so that the optical axis of the lens can be prevented from being deviated.

Alternatively, the guide posts 23 are plural, and the guide posts 23 are provided at intervals along the outer peripheral side of the support convex ring 22. It should be noted that, in one specific embodiment of the present application, the guiding columns 23 are plural and are disposed at the corners of the base 20, and one guiding column 23 is disposed at each corner of the base 20.

In an embodiment of the present application, which is not shown in the drawings, there are a plurality of elastic supporting bodies 41, a plurality of pressing structures 42 and a plurality of elastic supporting bodies 41 are disposed in a one-to-one correspondence, and the plurality of elastic supporting bodies 41 are disposed at intervals along the circumferential direction of the lens holder 30. By such an arrangement, the inner space of the lens driving device can have variability through different arrangement modes of the elastic component, so that the inner space of the lens driving device can be more flexibly arranged.

In an embodiment of the present application, the elastic sheet 50 abuts against an end of the lens holder 30 away from the base 20, and a fixing post 24 is further disposed on a side of the base 20 facing the lens holder 30, and the elastic sheet 50 is connected to the fixing post 24.

Optionally, the fixing post 24 is plural, and at least one fixing post 24 is disposed at each corner of the base 20.

In one embodiment of the present application, the elastic sheet 50 includes: a pressing portion 51, the pressing portion 51 being annular, the pressing portion 51 abutting against the lens holder 30; the connecting portions 52 are provided in plurality, the connecting portions 52 correspond to the fixing posts 24 one by one, one end of the connecting portion 52 is connected to the pressing portion 51, and the other end of the connecting portion 52 is connected to the fixing posts 24.

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

1. the structure is simple, the assembly is easy, the circuit routing is simple, and the circuit is stable.

2. The absence of magnets does not create problems of magnetic interference, either internally or externally.

3. The design problem of a magnetic circuit is avoided, and the average thrust of the whole stroke is larger than that of a magnetoelectric mode and more efficient than that of the magnetoelectric mode.

4. The voice coil motor has no upper spring and lower spring design, and the problems of spring deformation and nickel or foreign matter falling do not occur when the voice coil motor falls and is tested by a roller and the like.

6. The elastic support body has damping function without adding damping glue.

7. The motor housing can be made of plastic, which contributes to the gain of the mobile terminal antenna db.

8. The motor with different appearance structures can be manufactured.

9. The elastic support body can also have the effect of a dustproof ring, and the dustproof effect is better than that of a magnetoelectric mode.

10. The size and area of the finished motor products with the same lens diameter can be smaller than those of the finished motor products with the same lens diameter in a magnetoelectric mode.

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

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

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

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

Claims

1. A lens driving device, comprising a housing (10) and a base (20), wherein the housing (10) covers the base (20) and forms an accommodating space with the base (20), and the lens driving device further comprises:

the lens holder (30), the said lens holder (30) is set up in the inside of the said containing space movably;

the elastic support assembly (40), the elastic support assembly (40) is supported between the lens mount (30) and the base (20) or between the lens mount (30) and the shell (10), and the elastic support assembly (40) is electrified to enable at least one part of the elastic support assembly (40) to deform and drive the lens mount (30) to move along the Z-axis direction.

2. The lens driving device according to claim 1, wherein the elastic support member (40) comprises:

an elastic support body (41);

the pressing structure (42), the pressing structure (42) circular telegram in order to elastic support body (41) provide the extrusion force, work as elastic support body (41) receive when pressing structure (42) extrudees, elastic support body (41) produce deformation and drive lens mount (30) are along the motion of Z axle direction.

3. The lens driving device according to claim 2, wherein the elastic support body (41) is annular, and the elastic support body (41) is fitted around a peripheral side of the lens holder (30).

4. A lens driving device according to claim 3, wherein the lens holder (30) comprises:

a cylindrical structure (31), wherein the interior of the cylindrical structure (31) is used for accommodating a lens (60);

an abutting flange (32), wherein the abutting flange (32) is arranged at one end of the cylindrical structure (31) far away from the base (20), the elastic supporting body (41) is sleeved at the outer peripheral side of the cylindrical structure (31), and one end of the elastic supporting body (41) far away from the base (20) abuts against the abutting flange (32).

5. The lens driving device according to claim 3, wherein a diameter of a middle portion of the elastic support (41) in the Z-axis direction is larger than diameters of both ends of the elastic support (41).

6. Lens driving device according to claim 2, characterized in that the elastic support (41) is made of a silicone material or a rubber material.

7. Lens driving device according to claim 2, characterized in that the elastic support (41) has a filling space inside, and the filling space is filled with a liquid or a gas inside.

8. The lens driving device according to claim 2,

the pressing structure (42) is arranged at the outer periphery side of the elastic supporting body (41); or

An embedded groove is formed in the elastic supporting body (41), and at least one part of the extrusion structure (42) is embedded in the embedded groove.

9. The lens driving device according to claim 2, wherein the pressing structure (42) comprises:

the SMA wire (421) is wound on the circumferential outer side wall of the elastic support body (41);

and the end pin assembly (422), the end pin assembly (422) is arranged on the base (20), and two ends of the SMA wire (421) are respectively connected with the end pin assembly (422).

10. The lens driving device according to claim 9, wherein the terminal pin assembly (422) comprises at least two terminal pins (4221), a side of the base (20) facing the lens holder (30) has a terminal protrusion (21), and an end of one of the terminal pins (4221) passes through the base (20) and the terminal protrusion (21) from an end of the base (20) away from the terminal protrusion (21) and protrudes out of the terminal protrusion (21).

11. Lens driving device according to claim 2, wherein the base (20) has a supporting convex ring (22) on a side facing the lens holder (30), and at least a portion of the elastic supporting body (41) is connected to the supporting convex ring (22).

12. The lens driving device according to claim 4, wherein the base (20) further has at least one guiding post (23) on a side facing the lens holder (30), and the abutment flange (32) is provided with at least one guiding hole (321) engaged with the guiding post (23).

13. The lens driving device according to claim 2, wherein the elastic support body (41) is provided in plurality, the pressing structure (42) is provided in plurality, the pressing structures (42) and the elastic support bodies (41) are provided in one-to-one correspondence, and the elastic support bodies (41) are provided at intervals in a circumferential direction of the lens holder (30).

14. The lens driving device according to any one of claims 1 to 13, further comprising a resilient plate (50), wherein the resilient plate (50) is disposed between the lens holder (30) and the housing (10) and provides a restoring force for the lens holder (30) to move toward one side of the base (20).

15. The lens driving apparatus according to claim 14, wherein the resilient piece (50) abuts against an end of the lens holder (30) away from the base (20), and a fixing post (24) is further disposed on a side of the base (20) facing the lens holder (30), and the resilient piece (50) is connected to the fixing post (24).

16. The lens driving device according to claim 15, wherein the fixing posts (24) are plural, and at least one fixing post (24) is provided at each corner of the base (20).

17. Lens driving device according to claim 16, characterized in that the spring (50) comprises:

the extrusion part (51), the extrusion part (51) is annular, and the extrusion part (51) is abutted with the lens seat (30);

the connecting parts (52) are multiple, the connecting parts (52) correspond to the fixing columns (24) one by one, one end of each connecting part (52) is connected with the corresponding extrusion part (51), and the other end of each connecting part (52) is connected with the corresponding fixing column (24).

18. An image pickup apparatus comprising the lens driving apparatus according to any one of claims 1 to 17.

19. A mobile terminal characterized in that it comprises the camera device of claim 18.