Lens driving device, camera device and mobile terminal

Abstract

The present invention provides a lens driving device, a camera device and a mobile terminal. The lens driving device includes a housing and a base, wherein the housing cover is arranged on the base and forms an accommodation space with the base, and the lens driving device also includes: a lens seat arranged in the accommodation space, wherein the lens seat is movably arranged inside the accommodation space; and an elastic support component, wherein the elastic support component is supported between the lens seat and the base or between the lens seat and the housing, and the elastic support component is energized to deform at least a part of the elastic support component and drive the lens seat to move along the Z-axis direction. The present invention solves the problem of poor performance of the voice coil motor of the camera device in the prior art.

Description

Technical Field

[0001] The present invention relates to the field of camera devices, and in particular to a lens driving device, a camera device and a mobile terminal. Background Art

[0002] Video cameras or cameras usually use lenses with adjustable focal length or automatic focus, and the adjustment process is to change the position of the lens. A drive motor is usually used to drive the lens to move. At present, the automatic focus of handheld camera devices, especially mobile phone cameras, is basically all completed using voice coil motors (VCM). The voice coil motor is a system composed of a coil and a magnet. After the power is turned on, the coil will be subjected to electromagnetic force in the magnetic field. Due to the action of the electromagnetic force, the winding carrier is driven to move in a straight line along the optical axis of the lens (i.e., the Z axis). The winding carrier finally stops at the position where the electromagnetic force generated between the annular coil and the driving magnet and the elastic force of the upper spring and the lower spring reach a state of equilibrium.

[0003] Although voice coil motors have the advantages of mature technology, low cost, and low noise, as the requirements for camera devices increase, voice coil motors have problems such as magnetic interference, insufficient thrust, and unstable structure and performance. For example: dual-camera motors have been developed and applied to various mid-to-high-end mobile phones, but there are certain troubles and difficulties in actual application. In particular, there is a certain degree of magnetic interference between the two dual-camera motors, which affects the normal performance of the dual-camera motor. Voice coil motors cannot avoid this defect. At the same time, various improvement schemes are likely to cause the motor structure to be complicated and the difficulty of the assembly process to increase. The electrical conduction and connection assembly between the various components in the voice coil motor are achieved through welding, hot riveting, and gluing. At the same time, the coil needs to be energized through the upper / lower springs, resulting in a longer path for the coil to be energized. Since the voice coil motor has a large number of parts, it requires more welding, hot riveting, and gluing. Once the mobile phone is subjected to external forces such as falling and impact, the motor is easily pulled off or the spring deformed due to external force vibrations. Ultimately, the electrical performance and combined structure inside the motor are damaged, affecting the normal performance of the motor and bringing adverse consequences to the shooting effect.

[0004] Therefore, there is a problem in the prior art that the voice coil motor of the camera device has poor performance. Summary of the invention

[0005] The main purpose of the present invention is to provide a lens driving device, a camera device and a mobile terminal to solve the problem of poor performance of the voice coil motor of the camera device in the prior art.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a lens driving device is provided, including a shell and a base, the shell cover is arranged on the base and forms an accommodating space with the base, the lens driving device also includes: a lens seat arranged in the accommodating space, the lens seat is movably arranged inside the accommodating space; an elastic support component, the elastic support component is supported between the lens seat and the base or between the lens seat and the shell, the elastic support component is energized to cause at least a part of the elastic support component to deform and drive the lens seat to move along the Z-axis direction.

[0007] Furthermore, the elastic support assembly includes: an elastic support body; an extrusion structure, which is energized to provide an extrusion force to the elastic support body. When the elastic support body is squeezed by the extrusion structure, the elastic support body is deformed and drives the lens mount to move along the Z-axis direction.

[0008] Furthermore, the elastic support body is ring-shaped, and the elastic support body is sleeved with the peripheral side of the lens holder.

[0009] Furthermore, the lens mount includes: a cylindrical structure, the interior of the cylindrical structure is used to accommodate the lens; an abutment flange, the abutment flange is arranged at one end of the cylindrical structure away from the base, the elastic support body is sleeved on the outer peripheral side of the cylindrical structure, and the end of the elastic support body away from the base abuts against the abutment flange.

[0010] Further, the diameter of the middle portion of the elastic support body along the Z-axis direction is greater than the diameters of both ends of the elastic support body.

[0011] Furthermore, the elastic support body is made of silicone material or rubber material.

[0012] Furthermore, the elastic supporting body has a filling space inside, and the filling space is filled with liquid or gas.

[0013] Furthermore, the extrusion structure is arranged on the outer peripheral side of the elastic support body; or a pre-buried groove is arranged on the elastic support body, and at least a part of the extrusion structure is embedded in the pre-buried groove.

[0014] Furthermore, the extrusion structure includes: an SMA wire, which is wound around the circumferential outer side wall of the elastic support body; and an end foot assembly, which is arranged on the base, and both ends of the SMA wire are respectively connected to the end foot assembly.

[0015] Furthermore, the terminal pin assembly includes at least two connection terminal pins, and the side of the base facing the lens mount has a connection protrusion, and one end of one of the connection terminal pins passes through the base and the connection protrusion respectively and extends out of the connection protrusion from the end of the base away from the connection protrusion.

[0016] Furthermore, a supporting convex ring is provided on a side of the base facing the lens holder, and at least a portion of the elastic supporting body is connected to the supporting convex ring.

[0017] Furthermore, the base has at least one guide post on one side facing the lens holder, and the abutting flange is provided with at least one guide hole cooperating with the guide post.

[0018] Furthermore, there are multiple elastic support bodies and multiple extrusion structures, the multiple extrusion structures are arranged in one-to-one correspondence with the multiple elastic support bodies, and the multiple elastic support bodies are arranged at intervals along the circumference of the lens mount.

[0019] Furthermore, the lens driving device also includes a spring sheet, which is arranged between the lens mount and the housing to provide a restoring force for the lens mount to move toward one side of the base.

[0020] Furthermore, the spring piece abuts against an end of the lens mount away from the base, and a side of the base facing the lens mount is also provided with a fixing column, and the spring piece is connected to the fixing column.

[0021] Furthermore, there are multiple fixing columns, and at least one fixing column is respectively arranged at each corner of the base.

[0022] Furthermore, the spring piece includes: an extrusion part, which is annular and abuts against the lens mount; a connecting part, which is multiple and corresponds one to one with multiple fixing columns, and one end of the connecting part is connected to the extrusion part, and the other end of the connecting part is connected to the fixing column.

[0023] According to another aspect of the present invention, there is provided an image pickup device, the image pickup device comprising the above-mentioned lens driving device.

[0024] According to another aspect of the present invention, a mobile terminal is provided. The mobile terminal includes the above-mentioned camera device.

[0025] Applying the technical solution of the present invention, the lens driving device in the present application includes a housing and a base, wherein the housing cover is arranged on the base and forms an accommodation space with the base, and the lens driving device also includes a lens holder and an elastic support component arranged in the accommodation space. The lens holder is movably arranged inside the accommodation space; the elastic support component is supported between the lens holder and the base or between the lens holder and the housing, and the elastic support component is energized to deform at least a part of the elastic support component and drive the lens holder to move along the Z-axis direction.

[0026] When the lens driving device in the present application is used, since the lens driving device has a lens seat, the lens of the mobile terminal can be installed on the lens seat, and since it also has an elastic support component, the lens seat can be driven to move by the deformation of the elastic support component, thereby driving the lens to move along the Z-axis direction, thereby realizing the automatic focusing function. That is to say, in the present application, the drive coil and drive magnet parts in the original voice coil motor are replaced by the elastic support component of the lens driving device. In addition, since the spring and other structures that match the drive magnet and the drive coil are no longer required in the present application, the lens driving device in the present application is simpler in structure than the existing voice coil motor. At the same time, there is no magnet, so there will be no internal or external magnetic interference problems. In addition, the lens driving device in the present application has no magnetic circuit design problems, and the average thrust of the entire stroke force is greater than that of the electromagnetic method, so it is more efficient than the existing voice coil motor. In addition, there is no upper and lower spring design of the voice coil motor, and there will be no problems of spring deformation, nickel or foreign matter falling off in the drop and roller tests. Since the elastic support component in the present application has a damping effect, the lens drive device in the present application no longer needs an external damping rubber. In the present application, since the lens mount is driven only by the elastic support component, fewer components are required compared to the electromagnetic drive method of the voice coil motor, which is conducive to the miniaturization of the lens drive device. Therefore, the lens drive device in the present application effectively solves the problem of poor performance of the voice coil motor of the camera device in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0028] Figure 1 A schematic structural diagram of a lens driving device according to a specific embodiment of the present invention is shown;

[0029] Figure 2 Shows Figure 1 An exploded diagram of the lens drive device in FIG.

[0030] Figure 3 Shows Figure 1 A schematic diagram of the positional relationship among the base, elastic support body and lens mount of the lens driving device;

[0031] Figure 4 Shows Figure 1 Schematic diagram of the positional relationship among the base, extrusion structure, lens mount and shrapnel of the lens driving device.

[0032] The above drawings include the following reference numerals:

[0033] 10. Outer shell; 20. Base; 21. Wiring protrusion; 22. Supporting protrusion ring; 23. Guide column; 24. Fixing column; 30. Lens mount; 31. Cylindrical structure; 32. Abutment flange; 321. Guide hole; 40. Elastic support assembly; 41. Elastic support body; 42. Extrusion structure; 421. SMA wire; 422. Terminal foot assembly; 4221. Wiring terminal foot; 50. Spring piece; 51. Extrusion part; 52. Connecting part; 60. Lens. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0036] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0037] In order to solve the problem of poor performance of the voice coil motor of the camera device in the prior art, the present application provides a lens driving device, a camera device and a mobile terminal.

[0038] It should be pointed out that the mobile terminal in the present application has a camera device, and the camera device in the present application has the following lens driving device.

[0039] like Figures 1 to 4 As shown, 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 accommodation space with the base 20. The lens driving device also includes a lens holder 30 and an elastic support assembly 40 arranged in the accommodation space. The lens holder 30 is movably arranged inside the accommodation 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. The elastic support assembly 40 is energized to deform at least a part of the elastic support assembly 40 and drive the lens holder 30 to move along the Z-axis direction.

[0040] When the lens driving device in the present application is used, since the lens driving device has a lens seat 30, the lens of the mobile terminal can be installed on the lens seat 30, and since it also has an elastic support component 40, the deformation of the elastic support component 40 can drive the lens seat 30 to move, thereby driving the lens to move along the Z-axis direction, thereby realizing the automatic focusing function. That is to say, in the present application, the elastic support component 40 of the lens driving device replaces the drive coil and drive magnet parts in the original voice coil motor. In addition, since the present application no longer requires springs and other structures that match the drive magnet and the drive coil, the lens driving device in the present application is simpler in structure than the existing voice coil motor. At the same time, there is no magnet, so there will be no internal or external magnetic interference problems. In addition, the lens driving device in the present application has no magnetic circuit design problems, and the average thrust of the entire stroke force is greater than that of the electromagnetic method, so it is more efficient than the existing voice coil motor. In addition, there is no upper and lower spring design of the voice coil motor, and there will be no problems of spring deformation, nickel or foreign matter falling off in tests such as drop and roller. Since the elastic support component 40 in the present application has a damping effect, the lens driving device in the present application no longer needs an external damping glue. In the present application, since the lens holder 30 is driven only by the elastic support component 40, fewer components are required compared with the electromagnetic driving method of the voice coil motor, which is conducive to the miniaturization of the lens driving device. Therefore, the lens driving device in the present application effectively solves the problem of poor performance of the voice coil motor of the camera device in the prior art.

[0041] In the following embodiments of the present application, the elastic support assembly 40 is disposed between the lens holder 30 and the base 20 .

[0042] It should be noted that, in the present application, a 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.

[0043] In a specific embodiment of the present application, the elastic support assembly 40 includes an elastic support body 41 and an extrusion structure 42. The extrusion structure 42 is energized to provide an extrusion force to the elastic support body 41. When the elastic support body 41 is squeezed by the extrusion structure 42, the elastic support 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 of the present application, when the lens needs to be focused, the extrusion structure 42 will be energized and squeeze the elastic support body 41, thereby driving the lens holder 30 to move through the deformation of the elastic support body 41, and then the lens holder 30 can drive the lens to move along the Z-axis direction. Of course, in the present application, the extrusion structure 42 can also be set to other forms, as long as the extrusion structure 42 can be controlled to squeeze the elastic support body 41.

[0044] It should be pointed out that in the present application, by providing an elastic support body 41, the impact force received by the camera device during the falling process can be reduced, and a certain buffering and vibration-proofing effect can be played. At the same time, there will be no problem of nickel or foreign matter falling off in tests such as falling and rolling. The internal structure of the motor can be protected, and there is no need to set up additional damping glue, which can simplify the assembly process and improve the structural stability.

[0045] Optionally, the elastic support body 41 is annular, and the elastic support body 41 is sleeved with the peripheral side of the lens holder 30. This arrangement not only facilitates the connection between the lens holder 30 and the elastic support body 41, but also ensures that after the elastic support body 41 is deformed by the extrusion force of the extrusion structure 42, the lens holder 30 can be more evenly stressed, thereby ensuring that the movement of the lens holder 30 will not be deflected, so as to ensure the focusing effect and shooting effect of the mobile terminal. On the other hand, the elastic support body 41 can also be regarded as annular, and this arrangement can make the elastic support body 41 play a dustproof role, thereby improving the sealing performance of the lens drive device.

[0046] Of course, it should be pointed out that in the present application, the shape of the elastic support body 41 is not limited to annular or cylindrical, and the elastic support body 41 can also be set to other shapes according to actual design requirements, such as a regular polygonal cylindrical structure 31.

[0047] In a specific embodiment of the present application, the lens holder 30 includes a cylindrical structure 31 and an abutting flange 32. The interior of the cylindrical structure 31 is used to accommodate the lens 60; the abutting flange 32 is arranged at one end of the cylindrical structure 31 away from the base 20, and the elastic support body 41 is sleeved on the outer peripheral side of the cylindrical structure 31, and the end of the elastic support body 41 away from the base 20 abuts against the abutting flange 32. In this embodiment, the cylindrical structure 31 is provided to not only accommodate the lens of the mobile terminal, but also to make it easier for the elastic support body 41 to be sleeved on the lens holder 30, and to ensure that the elastic support body 41 and the cylindrical structure 31 are more closely fitted. By providing the abutting flange 32, it can be ensured that one end of the elastic support body 41 can abut against the abutting flange 32, so that it can be ensured that after the elastic support body 41 is deformed by force, the elastic support body 41 can drive the lens holder 30 to move together, and the elastic support body 41 will not move relative to the lens holder 30, so as to ensure the stable performance of the lens driving device.

[0048] Optionally, the diameter of the middle part of the elastic support body 41 along the Z-axis direction is greater than the diameter of the two ends of the elastic support body 41. In the present application, the purpose of such a setting is that the elastic support body 41 mainly generates extension along the Z-axis direction through the deformation of the middle part, so that the elastic support body 41 can drive the lens holder 30 to achieve a large stroke drive. In addition, through such a setting, after the elastic support body 41 is deformed by force, the diameter of the middle part of the elastic support body 41 will not be too small, thereby ensuring that the elastic support will not be deflected after being squeezed, thereby ensuring the stability of the elastic support body 41, and ensuring the focusing stability of the lens support body, ensuring the shooting effect of the mobile terminal, and preventing the captured image from being blurred.

[0049] Optionally, the elastic support body 41 is made of a silicone material or a rubber material. By configuring in this way, the overall weight of the lens driving device can be reduced, so that less force is required when driving the lens to move, thereby improving the sensitivity of the lens driving device.

[0050] Of course, in the present application, since there is no need to consider the problem of electromagnetic interference, the lens driving device can be made of plastic material, thereby improving the db gain of the mobile terminal antenna.

[0051] As for the material of the shell 10, in traditional voice coil motors, in order to enhance the magnetic field strength, the shell 10 usually needs to use magnetic materials to achieve the effect of blocking and concentrating magnetic fields. However, the shell 10 in the present application can be made of magnetic or non-magnetic metal, or non-metallic materials such as plastic, and the material selection of the shell 10 is flexible.

[0052] As for the shape of the housing 10, in traditional voice coil motors, considering the matching assembly process of magnets and coils, special-shaped motors, such as round motors, require special-shaped magnets to achieve the effect of magnetic induction drive, but special-shaped magnets have relatively high requirements on the process and are difficult to achieve. The housing 10 in this application can realize motors with different shapes and structures.

[0053] Specifically, the elastic support body 41 has a filling space inside, and the filling space is filled with liquid or gas. By setting it in this way, in addition to ensuring the deformation performance of the elastic support body 41, the supporting effect of the elastic support body 41 can also be ensured by the filled liquid or gas, and the elastic support can have a certain shape when not subjected to extrusion force.

[0054] Optionally, the extrusion structure 42 is disposed on the outer peripheral side of the elastic support body 41, or a pre-buried groove is disposed on the elastic support body 41, and at least a portion of the extrusion structure 42 is embedded in the pre-buried groove. In a specific embodiment of the present application, the extrusion structure 42 is disposed on the outer peripheral side of the elastic support body 41.

[0055] In a specific embodiment of the present application, the extrusion structure 42 includes an SMA wire 421 and an end foot assembly 422. The SMA wire 421 is wound around the circumferential outer wall of the elastic support body 41; the end foot assembly 422 is arranged on the base 20, and the two ends of the SMA wire 421 are respectively connected to the end foot assembly 422. In this embodiment, the input and output ends of the SMA wire 421 are electrically connected to the end foot assembly 422, and the connection between the SMA wire 421 and the end foot assembly 422 can be welding or connection by means of a chuck, a buckle, etc., as long as the connection stability between the input and output ends of the SMA wire 421 and the end foot assembly 422 is guaranteed.

[0056] Specifically, the lens driving device further includes a spring sheet 50, which is arranged between the lens holder 30 and the housing 10 to provide a restoring force for the lens holder 30 to move toward one side of the base 20. By such an arrangement, when the elastic support body 41 is not subjected to the extrusion force of the extrusion structure 42, the lens holder 30 is subjected to the force of the spring sheet 50, and the force direction of the lens holder 30 points to one side of the base 20, that is, in the present application, the spring sheet 50 provides a pre-tightening force to the lens holder 30, and after the elastic support body 41 is deformed to drive the lens holder 30 to complete the focusing, and when the lens holder 30 needs to be restored to the position before focusing, the force of the spring sheet 50 on the lens holder 30 can accelerate the resetting speed of the lens holder 30, thereby improving the response speed of the lens driving device.

[0057] It should also be pointed out that in the present application, the spring 50 only provides elastic force for the lens holder 30, so the spring 50 does not need to be connected to electricity. Therefore, compared with the traditional voice coil motor, the lens driving device in the present application does not need to design a complex circuit structure.

[0058] In the present application, the end foot assembly 422 supplies electricity to the SMA wire 421, and the SMA wire 421 generates heat after being energized. According to the characteristics of the SMA wire 421 that it shrinks when heated and expands when cooled, the SMA wire 421 can apply radial pressure to the wound elastic support body 41 to cause the elastic support body 41 to plastically deform. Since the upper and lower ends of the elastic support body 41 are free ends, the deformation direction of the elastic support body 41 is the length direction Z axis. Since the lower end of the elastic support body 41 abuts against the base 20, the Z-axis deformation of the elastic support body 41 is to squeeze the lens holder 30 to move the lens holder 30 along the Z axis. The combined force of the deformation of the elastic support body 41 to varying degrees and the pressure of the spring 50 in the Z-axis direction forms a driving stroke of the lens holder 30, thereby realizing automatic focusing of the lens.

[0059] Optionally, the end pin assembly 422 includes at least two wiring end pins 4221, and the side of the base 20 facing the lens mount 30 has a wiring protrusion 21, and one end of one of the wiring end pins 4221 passes through the base 20 and the wiring protrusion 21 and extends out of the wiring protrusion 21 from the end of the base 20 away from the wiring protrusion 21.

[0060] Specifically, the base 20 has a supporting protrusion 22 on one side facing the lens holder 30, and at least a portion of the elastic support body 41 is connected to the supporting protrusion 22. In the present application, the supporting protrusion 22 not only provides installation positioning for the lens holder 30 and the elastic support body 41, but also seals and prevents the elastic support body 41 from bending or deflecting.

[0061] Specifically, the base 20 has at least one guide post 23 on one side facing the lens holder 30, and the abutting flange 32 is provided with at least one guide hole 321 cooperating with the guide post 23. It should be noted that during the movement of the lens holder 30, the lens holder 30 and the guide post 23 are always connected. That is to say, in the present application, the purpose of providing the guide post 23 is to enable the lens holder 30 to be sleeved on the guide post 23 through the cooperation between the guide hole 321 and the guide post 23, and during the movement of the lens holder 30, the guide post 23 provides a guiding effect for the movement of the lens holder 30, thereby preventing the optical axis of the lens from being deflected.

[0062] Optionally, there are multiple guide posts 23, and the guide posts 23 are arranged at intervals along the outer peripheral side of the supporting protruding ring 22. It should be noted that in a specific embodiment of the present application, there are multiple guide posts 23 and they are arranged at the corners of the base 20, and each corner of the base 20 is provided with a guide post 23.

[0063] In an embodiment of the present application which is not shown in the figure, there are multiple elastic support bodies 41, multiple extrusion structures 42, multiple extrusion structures 42 are arranged in a one-to-one correspondence with multiple elastic support bodies 41, and multiple elastic support bodies 41 are arranged at intervals along the circumference of the lens holder 30. Through such an arrangement, the internal space of the lens driving device can be made variable by different arrangement methods of the elastic components, so that the internal space of the lens driving device can be laid out more flexibly.

[0064] In a specific embodiment of the present application, the spring piece 50 abuts against one end of the lens mount 30 away from the base 20 , and the base 20 further has a fixing column 24 on one side facing the lens mount 30 , and the spring piece 50 is connected to the fixing column 24 .

[0065] Optionally, there are multiple fixing columns 24 , and at least one fixing column 24 is disposed at each corner of the base 20 .

[0066] In a specific embodiment of the present application, the spring piece 50 includes: an extrusion portion 51, which is annular and abuts against the lens holder 30; a connecting portion 52, wherein there are multiple connecting portions 52, and the multiple connecting portions 52 correspond one-to-one to the multiple fixing columns 24, and one end of the connecting portion 52 is connected to the extrusion portion 51, and the other end of the connecting portion 52 is connected to the fixing column 24.

[0067] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0068] 1. Simple structure, easy assembly, simple circuit routing and stable circuit.

[0069] 2. Without magnets, there will be no internal or external magnetic interference problems.

[0070] 3. There is no problem with the magnetic circuit design. The average thrust of the entire stroke is greater than that of the magneto-electric method, which is more efficient than the magneto-electric method.

[0071] 4. There is no upper and lower spring design of the voice coil motor, and there will be no problems of spring deformation, nickel or foreign matter falling off in drop and roller tests.

[0072] 6. The elastic support body itself has a damping effect and no external damping glue is needed.

[0073] 7. Plastic can be used to make the motor housing, which helps to increase the db gain of the mobile terminal antenna.

[0074] 8. The motor can be made into different shapes and structures.

[0075] 9. The elastic support body can also act as a dustproof ring, and the dustproof effect is better than the magnetic and electric method.

[0076] 10. The finished motor product size with the same lens diameter can be smaller than the magnetoelectric method.

[0077] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0078] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0079] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lens driving device, characterized in that: The lens driving device comprises a housing (10) and a base (20), wherein the housing (10) is disposed on the base (20) and forms an accommodation space with the base (20), and the lens driving device further comprises: A lens seat (30), the lens seat (30) being movably arranged inside the accommodating space; an elastic support component (40), the elastic support component (40) being supported between the lens mount (30) and the base (20) or between the lens mount (30) and the housing (10), the elastic support component (40) being energized so that at least a portion of the elastic support component (40) is deformed and drives the lens mount (30) to move along the Z-axis direction; The elastic support assembly (40) comprises: An elastic support body (41); Extruded structures (42); The extrusion structure (42) is arranged on the outer peripheral side of the elastic support body (41); or a pre-buried groove is arranged on the elastic support body (41), and at least a part of the extrusion structure (42) is embedded in the pre-buried groove; The extrusion structure (42) is energized to provide an extrusion force to the elastic support body (41); when the elastic support body (41) is extruded by the extrusion structure (42), the elastic support body (41) is deformed and drives the lens holder (30) to move along the Z-axis direction; The elastic support body (41) is ring-shaped, and the elastic support body (41) is sleeved with the peripheral side of the lens holder (30); Along the Z-axis direction, the diameter of the middle portion of the elastic support body (41) is greater than the diameters of the two ends of the elastic support body (41).

2. The lens driving device according to claim 1, characterized in that: The lens mount (30) comprises: A cylindrical structure (31), wherein the interior of the cylindrical structure (31) is used to accommodate a lens (60); An abutment flange (32), wherein the abutment flange (32) is arranged at one end of the tubular structure (31) away from the base (20), the elastic support body (41) is sleeved on the outer peripheral side of the tubular structure (31), and one end of the elastic support body (41) away from the base (20) abuts against the abutment flange (32).

3. The lens driving device according to claim 1, characterized in that: The elastic support body (41) is made of silicone material or rubber material.

4. The lens driving device according to claim 1, characterized in that: The elastic support body (41) has a filling space inside, and the filling space is filled with liquid or gas.

5. The lens driving device according to claim 1, characterized in that: The extrusion structure (42) comprises: An SMA wire (421), the SMA wire (421) being wound around the circumferential outer side wall of the elastic support body (41); An end foot component (422), wherein the end foot component (422) is arranged on the base (20), and two ends of the SMA wire (421) are respectively connected to the end foot component (422).

6. The lens driving device according to claim 5, characterized in that: The terminal pin assembly (422) comprises at least two terminal pins (4221), and a side of the base (20) facing the lens mount (30) has a terminal protrusion (21), wherein one 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 extends out of the terminal protrusion (21).

7. The lens driving device according to claim 1, characterized in that: The base (20) has a supporting convex ring (22) on one side facing the lens mount (30), and at least a portion of the elastic support body (41) is connected to the supporting convex ring (22).

8. The lens driving device according to claim 2, characterized in that: The base (20) further comprises at least one guide column (23) on a side facing the lens mount (30), and the abutting flange (32) is provided with at least one guide hole (321) matching with the guide column (23).

9. The lens driving device according to claim 1, characterized in that: There are a plurality of elastic support bodies (41), and a plurality of extrusion structures (42). The plurality of extrusion structures (42) are arranged in a one-to-one correspondence with the plurality of elastic support bodies (41), and the plurality of elastic support bodies (41) are arranged at intervals along the circumference of the lens mount (30).

10. The lens driving device according to any one of claims 1 to 9, characterized in that: The lens driving device further comprises a spring sheet (50), wherein the spring sheet (50) is arranged between the lens seat (30) and the housing (10) and provides a restoring force for the lens seat (30) to move towards one side of the base (20).

11. The lens driving device according to claim 10, characterized in that: The spring sheet (50) abuts against an end of the lens mount (30) away from the base (20), and a side of the base (20) facing the lens mount (30) also has a fixing column (24), and the spring sheet (50) is connected to the fixing column (24).

12. The lens driving device according to claim 11, characterized in that: There are a plurality of fixing columns (24), and at least one fixing column (24) is disposed at each corner of the base (20).

13. The lens driving device according to claim 12, characterized in that: The spring piece (50) comprises: A pressing portion (51), the pressing portion (51) being annular in shape, and the pressing portion (51) abuts against the lens seat (30); A connecting portion (52), wherein there are a plurality of connecting portions (52), the plurality of connecting portions (52) corresponding one-to-one to the plurality of fixing columns (24), and one end of the connecting portion (52) is connected to the extrusion portion (51), and the other end of the connecting portion (52) is connected to the fixing column (24).

14. A camera device, characterized in that: The imaging device includes the lens driving device according to any one of claims 1 to 13.

15. A mobile terminal, characterized in that: The mobile terminal includes the camera device according to claim 14.

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