Optical element driving device, imaging device, and mobile terminal

Abstract

This invention provides an optical element driving device, a camera device, and a mobile terminal. The optical element driving device includes: a housing; a base, the housing covering the base and forming an accommodating space between the housing and the base; a support, the support being movably disposed within the accommodating space; a lever assembly, at least a portion of which is rotatably disposed on the base and drivenly connected to the support; and a driving assembly, drivenly connected to the lever assembly. When the driving assembly is energized, at least a portion of the driving assembly moves relative to the base, driving the lever assembly to rotate relative to the base, thereby driving the support to move in a direction closer to or away from the base. This invention solves the problem of poor performance in the driving devices of existing camera devices.

Description

Technical Field

[0001] This invention relates to the field of camera devices, and more specifically, to an optical element driving device, a camera device, and a mobile terminal. Background Technology

[0002] Cameras typically employ lenses with adjustable focus or autofocus. The adjustment process involves changing the position of the lens or image sensor, and the movement of the lens and image sensor is usually driven by a motor. Currently, handheld camera devices—especially mobile phone cameras—almost entirely use voice coil motors (VCMs) for autofocus. A voice coil motor is a system composed of a coil and a magnet. When energized, the coil experiences an electromagnetic force in a magnetic field. This electromagnetic force drives the winding carrier to move linearly along the lens's optical axis (Z-axis). The winding carrier eventually stops at the point where the combined force of the electromagnetic force generated between the coil and the driving magnet, and the elastic forces of the upper and lower springs, reaches equilibrium.

[0003] Although voice coil motors have advantages such as mature technology, low cost, and low noise, with the increasing requirements of camera devices, 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 difficulties in actual use. 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 tend to make the motor structure more complex and increase the difficulty of assembly. The electrical conduction and connection between the various components in the voice coil motor are achieved through welding, hot riveting, and adhesive application. At the same time, the coil needs to be energized through the upper and lower springs, resulting in a long path for coil energization. Since there are many components in the voice coil motor, there are many welding, hot riveting, and adhesive application points. When the mobile phone is subjected to external forces such as drops or impacts, the motor is prone to internal welding points or adhesive application points being pulled off or springs being deformed due to the external force vibration. Ultimately, the internal electrical performance and assembly structure of the motor are damaged, affecting the normal performance of the motor and having adverse consequences for the shooting effect.

[0004] Therefore, the existing technology suffers from poor performance of the driving device for the camera. Summary of the Invention

[0005] The main objective of this invention is to provide an optical element driving device, a camera device, and a mobile terminal to solve the problem of poor performance of the driving device in the prior art.

[0006] To achieve the above objectives, according to one aspect of the present invention, an optical element driving device is provided, comprising: a housing; a base, the housing being disposed on the base and forming an accommodating space therebetween; a carrier, the carrier being movably disposed inside the accommodating space; a lever assembly, at least a portion of which is rotatably disposed on the base and is drivenly connected to the carrier; and a driving assembly, which is drivenly connected to the lever assembly; when the driving assembly is energized, at least a portion of the driving assembly moves relative to the base and drives the lever assembly to rotate relative to the base, thereby driving the carrier to move in a direction toward or away from the base.

[0007] Furthermore, the lever assembly includes at least two levers symmetrically arranged about the center of the support base. The levers are driven to the support base, and the two ends of the levers are a connecting end and a movable end, respectively. The connecting end of the lever is movably connected to the base so that the lever can rotate relative to the base.

[0008] Furthermore, the two rods are respectively set on a set of parallel sides of the base.

[0009] Furthermore, one of the rod body's sidewalls corresponding to the support seat has a driving protrusion along its length direction, and the other has a driving groove. The driving groove extends in the same direction as the rod body's length direction. The driving protrusion extends into the driving groove. When the rod body rotates relative to the base, the driving protrusion moves along the driving groove.

[0010] Furthermore, the rod body has a drive groove, the bearing seat has a drive protrusion, and the bearing seat has a mounting groove extending along the length direction of the rod body or multiple mounting holes spaced apart along the length direction of the rod body on the side wall corresponding to the rod body. One end of the drive protrusion is fixedly disposed in the mounting groove or detachably disposed on any one of the multiple mounting holes.

[0011] Furthermore, the lever assembly also includes multiple rotating shafts, each corresponding to a lever body, and the connecting end of the lever body is movably connected to the base via the rotating shafts.

[0012] Furthermore, the drive assembly includes: a first wire, of which there are multiple first wires; a second wire, of which there are multiple second wires, each rod corresponding to at least one first wire and at least one second wire; an FPC board, at least a portion of which is disposed within the accommodating space, the first end of the first wire and the first end of the second wire being connected to the connecting end of the rod, and the second end of the first wire and the second end of the second wire extending toward the length direction of the rod and being connected to the FPC board.

[0013] Furthermore, the first wire is set on the side of the rod away from the base, and the second wire is set on the side of the rod closer to the base; or the first wire and the second wire are arranged in a cross configuration.

[0014] Furthermore, when one of the first and second wires is energized, the other is de-energized.

[0015] Furthermore, when the first wire is energized, the direction of rotation of the rod is opposite to the direction of rotation of the rod when the second wire is energized.

[0016] Furthermore, the optical element driving device also includes multiple clamps, with the first and second wires connected to the FPC board via different clamps.

[0017] Furthermore, there are multiple FPC boards, and each FPC board corresponds to a different rod.

[0018] Furthermore, the FPC board includes a first connecting segment, a second connecting segment, and a third connecting segment. The second connecting segment and the third connecting segment are respectively connected to the first connecting segment, and the end of the second connecting segment away from the first connecting segment is connected to the clamp. The end of the third connecting segment away from the first connecting segment has a claw, which is connected to the connecting end of the rod. The first wire and the second wire are respectively connected to the rod through the claw.

[0019] Furthermore, the side wall of the base has a clearance groove for avoiding the first connecting segment, and at least a portion of the first connecting segment is disposed in the clearance groove.

[0020] Furthermore, the base is provided with mounting posts at the connecting end and the movable end of the rod, respectively. The connecting end of the rod is movably connected to the mounting post, and the clamp is set on the mounting post corresponding to the movable end of the rod.

[0021] Furthermore, the optical element driving device also includes multiple balls, and each mounting post is provided with a first mounting groove on the side facing the carrier. The extension direction of the first mounting groove is parallel to the movement path of the carrier. At least one ball is provided in each first mounting groove, and the carrier is provided with a second mounting groove corresponding to the first mounting groove.

[0022] Furthermore, the optical element driving device also includes a pressure plate, which is disposed on the side of the carrier away from the base and connected to the mounting post to provide a restoring force for the carrier to move toward the base.

[0023] Furthermore, the optical element driving device also includes: a lower spring, which is disposed on the side of the base facing the support; and an upper spring, which is disposed on the side of the support away from the lower spring and connected to the mounting post, and the support abuts against the lower spring and the upper spring respectively, so that the support is suspended inside the accommodating space.

[0024] According to another aspect of the present invention, a camera device is provided, which includes the aforementioned optical element driving device.

[0025] According to another aspect of the present invention, a mobile terminal is provided, the mobile terminal including the above-described camera device.

[0026] Applying the technical solution of this invention, the optical element driving device in this application includes a housing, a base, a support, a lever assembly, and a driving assembly. The housing covers the base and forms an accommodating space between the housing and the base; the support is movably disposed inside the accommodating space; at least a portion of the lever assembly is rotatably disposed on the base, and the lever assembly is drivenly connected to the support; the driving assembly is drivenly connected to the lever assembly; when the driving assembly is energized, at least a portion of the driving assembly moves relative to the base, and drives the lever assembly to rotate relative to the base, thereby driving the support to move in a direction closer to or farther from the base.

[0027] When using the optical element driving device of this application, the optical element in the camera module is mounted on the carrier. Since the lever assembly is rotatably mounted on the base and driven by the lever assembly, when the lever assembly rotates relative to the base, it can drive the carrier to move in a direction relatively closer to or away from the base, thereby realizing AF driving and focusing function. Furthermore, in this application, since the drive assembly is driven by the lever assembly, the lever assembly can move relative to the base after the drive assembly is powered on. That is, in this application, the lever assembly and drive assembly of the optical element driving device replace the drive coil and drive magnet parts in the original voice coil motor. Moreover, since this application no longer requires springs or other structures that cooperate with the drive magnet and drive coil, the optical element driving device of this application has a simpler structure than the existing voice coil motor. Also, since there is no magnet, there is no internal or external magnetic interference problem. Furthermore, the optical element driving device of this application has no magnetic circuit design problems, and the average thrust throughout the stroke is greater than that of the electromagnetic method, thus being more efficient than the existing voice coil motor. Furthermore, the absence of upper and lower springs in the voice coil motor design eliminates issues such as spring deformation, nickel residue, or foreign object detachment during drop and roller tests. Therefore, the optical element driving device in this application effectively solves the problem of poor performance in existing camera device driving devices. Attached Figure Description

[0028] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0029] Figure 1 An exploded view of an optical element driving device according to a specific embodiment of the present invention is shown;

[0030] Figure 2 It shows Figure 1A schematic diagram of the internal structure of the optical element driving device in the image;

[0031] Figure 3 It shows Figure 1 A schematic diagram showing the positional relationship between the base, rod, and drive components of the optical element drive device;

[0032] Figure 4 It shows Figure 1 A schematic diagram showing the positional relationship between the base, rod, first wire, and second wire of the optical element driving device in the diagram;

[0033] Figure 5 It shows Figure 1 A schematic diagram showing the positional relationship between the pressure plate, carrier seat, and base of the optical element driving device in the diagram;

[0034] Figure 6 An exploded view of an optical element driving device according to another specific embodiment of this application is shown;

[0035] Figure 7 It shows Figure 6 A schematic diagram of the internal structure of the optical element driving device in the image;

[0036] Figure 8 It shows Figure 6 A schematic diagram showing the positional relationship between the upper spring, lower spring, base, lever assembly, and drive assembly of the optical element drive device.

[0037] The above figures include the following reference numerals:

[0038] 10. Housing; 20. Base; 21. Clearance groove; 22. Mounting post; 221. First mounting groove; 30. Bearing seat; 31. Mounting hole; 32. Second mounting groove; 40. Lever assembly; 41. Lever body; 411. Connecting end; 412. Movable end; 42. Rotating shaft; 50. Drive assembly; 51. First thread; 52. Second thread; 53. FPC board; 531. First connecting section; 532. Second connecting section; 533. Third connecting section; 534. Claw; 60. Drive protrusion; 70. Drive groove; 80. Chuck; 90. Ball bearing; 100. Pressing plate; 200. Lower spring; 300. Upper spring; 400. Lens. Detailed Implementation

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0041] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0042] To address the problem of poor performance of driving devices in existing camera devices, this application provides an optical element driving device, a camera device, and a mobile terminal.

[0043] It should be noted that the mobile terminal in this application has a camera device, and the camera device in this application has the following optical element driving device.

[0044] like Figures 1 to 8 As shown, the optical element driving device of this application includes a housing 10, a base 20, a carrier 30, a lever assembly 40, and a driving assembly 50. The housing 10 covers the base 20 and forms an accommodating space with the base 20; the carrier 30 is movably disposed inside the accommodating space; at least a portion of the lever assembly 40 is rotatably disposed on the base 20, and the lever assembly 40 is drivenly connected to the carrier 30; the driving assembly 50 is drivenly connected to the lever assembly 40; when the driving assembly 50 is energized, at least a portion of the driving assembly 50 moves relative to the base 20, and drives the lever assembly 40 to rotate relative to the base 20, thereby driving the carrier 30 to move in a direction closer to or away from the base 20.

[0045] When using the optical element driving device of this application, the optical element in the camera module is mounted on the carrier 30. Since the lever assembly 40 is rotatably mounted on the base 20 and is drivenly connected to the carrier 30, when the lever assembly 40 rotates relative to the base 20, it can drive the carrier 30 to move in a direction relatively closer to or further away from the base 20, thereby realizing AF driving and focusing function. Furthermore, in this application, since the drive assembly 50 is drivenly connected to the lever assembly 40, the drive assembly 50 can drive the lever assembly 40 to move relative to the base 20 after being energized. In other words, in this application, the lever assembly 40 and drive assembly 50 of the optical element driving device replace the drive coil and drive magnet parts in the original voice coil motor. Moreover, since this application no longer requires springs or other structures that cooperate with the drive magnet and drive coil, the optical element driving device of this application has a simpler structure than the existing voice coil motor. Also, since there is no magnet, there is no problem of internal or external magnetic interference. Furthermore, the optical element drive device in this application eliminates magnetic circuit design issues, resulting in a higher average thrust throughout the stroke compared to electromagnetic methods, thus making it more efficient than existing voice coil motors. Moreover, the absence of upper and lower springs 200, typical of voice coil motors, prevents spring deformation, nickel deposits, or foreign objects from falling off during drop and roller tests. Therefore, the optical element drive device in this application effectively solves the problem of poor performance in existing camera drive devices.

[0046] It should be noted that the optical elements mentioned above generally refer to lenses or image sensors. In this application, when the optical element is a lens 400, both the housing 10 and the base 20 have opening structures for avoiding the lens of the mobile terminal.

[0047] In one specific embodiment of this application, the lever assembly 40 includes at least two rods 41 symmetrically arranged about the center of the support 30. The rods 41 are drivenly connected to the support 30, and each rod 41 has a connecting end 411 and a movable end 412. The connecting end 411 of the rod 41 is movably connected to the base 20, allowing the rod 41 to rotate relative to the base 20. That is, in this embodiment, the movement of the support 30 is achieved through the rotation of the two rods 41. Furthermore, it should be noted that when the support 30 is moved relative to the base 20 by the two rods 41, the rotation angles of the two rods 41 must be consistent to ensure that the support 30 does not tilt relative to the base 20 during movement.

[0048] Furthermore, it should be noted that the bearing seat 30 described in this application moves in a direction close to or away from the base 20, and its direction can also be along the Z-axis.

[0049] Optionally, the two rods 41 are respectively arranged on a set of parallel sides of the base 20. This arrangement ensures a more compact internal structure of the optical element driving device and also ensures the stability of the support 30 when moving relative to the base 20.

[0050] Of course, although the above embodiments propose that the support seat 30 is driven by the rotation of two rods 41 arranged symmetrically about the center of the support seat 30, the number of rods 41 can be appropriately increased according to the actual use or the different requirements for driving force, thereby increasing the driving force of the lever assembly 40 on the support seat 30.

[0051] In other words, in this application, the base 20 is generally quadrilateral, and when the lever assembly 40 includes only two centrally symmetrically arranged levers 41, the two levers 41 are respectively arranged on a set of opposite and parallel sides of the base 20. When it is necessary to increase the driving force on the support seat 30, two more centrally symmetrically arranged levers 41 can be added on another set of opposite and parallel sides of the base 20 to simultaneously drive the support seat 30, thereby increasing the driving force of the lever assembly 40 on the support seat 30.

[0052] Of course, the base 20 can also be made into other shapes according to actual usage needs.

[0053] Optionally, one of the sidewalls of the rod 41 corresponding to the support seat 30 in the length direction of the rod 41 has a driving protrusion 60, and the other has a driving groove 70. The extension direction of the driving groove 70 is the same as the length direction of the rod 41. The driving protrusion 60 extends into the driving groove 70. When the rod 41 rotates relative to the base 20, the driving protrusion 60 moves along the driving groove 70.

[0054] Optionally, the rod 41 has a drive groove 70, the support 30 has a drive protrusion 60, and the support 30 has a mounting groove extending along the length direction of the rod or a plurality of mounting holes 31 spaced apart along the length direction of the rod 41 on the side wall corresponding to the rod 41. One end of the drive protrusion 60 is fixedly disposed in the mounting groove or detachably disposed on any one of the plurality of mounting holes 31. That is to say, in this application, the part of the support 30 that carries the optical element and the drive protrusion 60 can be separately disposed.

[0055] In one specific embodiment of this application, the support base 30 has only one driving protrusion 60 on one side corresponding to each rod 41. After the mounting hole 31 where the driving protrusion 60 is located is determined, the driving protrusion 60 can no longer be removed from the mounting hole 31 to ensure the stability between the support base 30 and the rod 41. Furthermore, it should be noted that the purpose of providing multiple mounting holes 31 in this application is mainly to adjust the sensitivity of the rod 41 in driving the support base 30. Therefore, after determining the mounting hole 31 where the driving protrusion 60 is located, the connection position between the driving protrusion 60 and the rod 41 is also determined, thereby determining the sensitivity of the rod 41 in driving the support base 30.

[0056] Preferably, the lever assembly 40 further includes multiple rotating shafts 42, each corresponding to a lever body 41, and the connecting end 411 of the lever body 41 is movably connected to the base 20 via the rotating shafts 42. This arrangement ensures that the lever body 41 can rotate more flexibly relative to the base 20.

[0057] In one specific embodiment of this application, the drive assembly 50 includes: a plurality of first wires 51; a plurality of second wires 52, each rod 41 corresponding to at least one first wire 51 and at least one second wire 52; and an FPC board 53, at least a portion of which is disposed within an accommodating space. The first ends of the first wires 51 and the first ends of the second wires 52 are respectively connected to the connecting ends 411 of the rods 41, and the second ends of the first wires 51 and the second ends of the second wires 52 extend along the length direction of the rods 41 and are connected to the FPC board 53. Furthermore, the first wires 51 are disposed on the side of the rods 41 away from the base 20, and the second wires 52 are disposed on the side of the rods 41 closer to the base 20. In this embodiment, when one of the first wires 51 and the second wires 52 is energized, the other is de-energized. Furthermore, when the first wire 51 is energized, the rotation direction of the rod 41 is opposite to that when the second wire 52 is energized. With this configuration, when the first wire 51 is energized, the rod 41 rotates under the action of the first wire 51, and the direction of rotation is such that the movable end 412 of the rod 41 moves towards the base 20, thereby causing the carrier to move towards the base 20. Conversely, when the second wire 52 is energized, the rod 41 rotates under the action of the second wire 52, and the direction of rotation is such that the movable end 412 of the rod 41 moves away from the base 20, thereby causing the carrier to move away from the base 20. Therefore, in this application, by controlling the energization of the first wire 51 and the second wire 52, the AF drive of the optical element driving device can be realized.

[0058] Of course, in this application, the first wire 51 and the second wire 52 can also be installed in a cross configuration.

[0059] Furthermore, it should be noted that when neither the first wire 51 nor the second wire 52 is energized, both the first wire 51 and the second wire 52 can be arranged parallel to the rod 41. Of course, the first wire 51 and the rod 41, as well as the second wire 52 and the rod 41, can also be arranged at an angle.

[0060] Preferably, the optical element driving device further includes multiple clamps 80, and the first wire 51 and the second wire 52 are respectively connected to the FPC board 53 through different clamps 80. Furthermore, in a specific embodiment of this application, the clamps 80 and the FPC board 53 are connected by welding.

[0061] Specifically, there are multiple FPC boards 53, and different FPC boards 53 correspond to different rods 41.

[0062] In one specific embodiment of this application, the FPC board 53 includes a first connecting segment 531, a second connecting segment 532, and a third connecting segment 533. The second connecting segment 532 and the third connecting segment 533 are respectively connected to the first connecting segment 531. The end of the second connecting segment 532 away from the first connecting segment 531 is connected to the clamp 80. The end of the third connecting segment 533 away from the first connecting segment 531 has a claw 534. The claw 534 is connected to the connecting end 411 of the rod 41. The first wire 51 and the second wire 52 are respectively connected to the rod 41 through the claw 534.

[0063] Preferably, the side wall of the base 20 has a clearance groove 21 for accommodating the first connecting segment 531, and at least a portion of the first connecting segment 531 is disposed within the clearance groove 21. This arrangement ensures a more compact overall structure for the optical element driving device.

[0064] Specifically, the base 20 is provided with mounting posts 22 corresponding to the connecting end 411 and the movable end 412 of the rod 41. The connecting end 411 of the rod 41 is movably connected to the mounting post 22, and the clamp 80 is provided on the mounting post 22 corresponding to the movable end 412 of the rod 41. In a specific embodiment of this application, the bottom surface of the base 20 facing the support seat 30 is quadrilateral, and a mounting post 22 is provided at each corner of the quadrilateral. Every two different mounting posts 22 correspond to the connecting end 411 and the movable end 412 of the rod 41, and the mounting post 22 is perpendicular to the surface of the base 20 on which it is located.

[0065] Optionally, the optical element driving device further includes a plurality of balls 90. Each mounting post 22 is provided with a first mounting groove 221 on the side facing the carrier 30. The extension direction of the first mounting groove 221 is parallel to the movement path of the carrier 30. At least one ball 90 is provided in each first mounting groove 221. The carrier 30 is provided with a second mounting groove 32 corresponding to the first mounting groove 221. That is, in this application, the first mounting groove 221 and the second mounting groove 32 are opposite to each other and form a space for accommodating the balls 90. At least two balls 90 can be provided in the first mounting groove 221, thereby reducing the friction between the carrier 30 and the mounting post 22 during the movement of the carrier 30.

[0066] exist Figures 1 to 5 In the illustrated embodiment, the optical element driving device further includes a pressure plate 100, which is disposed on the side of the support 30 away from the base 20 and connected to the mounting post 22 to provide a restoring force for the support 30 to move toward the base 20. It should be noted that in this application, when the first wire 51 and the second wire 52 are not energized, the pressure plate 100 can provide a preload force to the support 30, thereby providing a balancing force for the support 30 during its Z-axis movement after the second wire 52 is energized, and providing a restoring force to the support 30 after the second wire 52 is de-energized.

[0067] exist Figures 6 to 8 In the illustrated embodiment, the optical element driving device further includes a lower spring 200 and an upper spring 300. The lower spring 200 is disposed on the side of the base 20 facing the support 30; the upper spring 300 is disposed on the side of the support 30 away from the lower spring 200 and connected to the mounting post 22, and the support 30 abuts against both the lower spring 200 and the upper spring 300, so that the support 30 is suspended inside the accommodating space. Of course, in this application, the upper spring 300 can also be connected to the outer casing 10. In this way, the upper spring 300 and the lower spring 200 can suspend the support 30 within the accommodating space and ensure that the support 30 does not contact the outer casing 10 or the base 20, thereby reducing the resistance during the movement of the support 30.

[0068] Optionally, the housing 10 is made of plastic material.

[0069] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0070] 1. Effectively solves the problem of poor performance of the driving device in existing camera devices;

[0071] 2. Simple structure and stable performance.

[0072] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0073] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0074] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0075] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An optical element driving device, characterized in that, include: Outer shell (10); The base (20) is covered by the outer shell (10) and forms an accommodating space between the base (20) and the outer shell (10); A support (30) is movably disposed inside the accommodating space; A lever assembly (40), at least a portion of which is rotatably disposed on the base (20), and the lever assembly (40) is drivenly connected to the support (30); A drive assembly (50) is driven to connect with the lever assembly (40); When the drive assembly (50) is powered on, at least a portion of the drive assembly (50) moves relative to the base (20) and drives the lever assembly (40) to rotate relative to the base (20) so as to drive the support seat (30) to move in a direction closer to or away from the base (20); The lever assembly (40) includes at least two levers (41) symmetrically arranged about the center of the support base (30). The levers (41) are driven to the support base (30), and the two ends of the levers (41) are a connecting end (411) and a movable end (412), respectively. The connecting end (411) of the levers (41) is movably connected to the base (20) so that the levers (41) can rotate relative to the base (20). The drive assembly (50) includes: a first wire (51), wherein there are multiple first wires (51); and a second wire (52), wherein there are multiple second wires (52), and each rod (41) corresponds to at least one first wire (51) and at least one second wire (52). When the first wire (51) is energized, the rotation direction of the rod (41) is opposite to the rotation direction of the rod (41) when the second wire (52) is energized.

2. The optical element driving device according to claim 1, characterized in that, The two rods (41) are respectively disposed on a set of parallel sides of the base (20).

3. The optical element driving device according to claim 1, characterized in that, The rod (41) has a driving protrusion (60) on one side wall of the support seat (30) corresponding to the rod (41) along its length direction, and the other has a driving groove (70). The driving groove (70) extends in the same direction as the length of the rod (41). The driving protrusion (60) extends into the driving groove (70). When the rod (41) rotates relative to the base (20), the driving protrusion (60) moves along the driving groove (70).

4. The optical element driving device according to claim 3, characterized in that, The rod (41) has the drive groove (70), the support (30) has the drive protrusion (60), and the support (30) has a mounting groove extending along the length direction of the rod (41) or a plurality of mounting holes (31) spaced apart along the length direction of the rod (41) on the side wall corresponding to the rod (41). One end of the drive protrusion (60) is fixedly disposed in the mounting groove or detachably disposed on any one of the mounting holes (31) among the plurality of mounting holes (31).

5. The optical element driving device according to claim 1, characterized in that, The lever assembly (40) also includes multiple rotating shafts (42), each of which corresponds to a lever body (41), and the connecting end (411) of the lever body (41) is movably connected to the base (20) through the rotating shafts (42).

6. The optical element driving device according to any one of claims 1 to 5, characterized in that, The drive component (50) further includes: FPC board (53), at least a portion of which is disposed within the accommodating space, the first end of the first wire (51) and the first end of the second wire (52) are respectively connected to the connecting end (411) of the rod (41), and the second end of the first wire (51) and the second end of the second wire (52) extend toward the length direction of the rod (41) and are connected to the FPC board (53).

7. The optical element driving device according to claim 6, characterized in that, The first wire (51) is disposed on the side of the rod (41) away from the base (20), and the second wire (52) is disposed on the side of the rod (41) close to the base (20); or The first thread (51) and the second thread (52) are arranged to cross each other.

8. The optical element driving device according to claim 7, characterized in that, When one of the first wire (51) and the second wire (52) is energized, the other is de-energized.

9. The optical element driving device according to claim 6, characterized in that, The optical element driving device also includes multiple clamps (80), and the first wire (51) and the second wire (52) are respectively connected to the FPC board (53) through different clamps (80).

10. The optical element driving device according to claim 9, characterized in that, There are multiple FPC boards (53), and different FPC boards (53) correspond to different rods (41).

11. The optical element driving device according to claim 10, characterized in that, The FPC board (53) includes a first connecting segment (531), a second connecting segment (532) and a third connecting segment (533). The second connecting segment (532) and the third connecting segment (533) are respectively connected to the first connecting segment (531). The end of the second connecting segment (532) away from the first connecting segment (531) is connected to the clamp (80). The end of the third connecting segment (533) away from the first connecting segment (531) has a claw (534). The claw (534) is connected to the connecting end (411) of the rod (41). The first wire (51) and the second wire (52) are respectively connected to the rod (41) through the claw (534).

12. The optical element driving device according to claim 11, characterized in that, The sidewall of the base (20) has a clearance groove (21) for avoiding the first connecting segment (531), at least a portion of the first connecting segment (531) is disposed in the clearance groove (21).

13. The optical element driving device according to claim 9, characterized in that, The base (20) is provided with mounting posts (22) at the connecting end (411) and the movable end (412) of the rod (41), respectively. The connecting end (411) of the rod (41) is movably connected to the mounting post (22), and the clamp (80) is provided on the mounting post (22) corresponding to the movable end (412) of the rod (41).

14. The optical element driving device according to claim 13, characterized in that, The optical element driving device also includes a plurality of balls (90), and each of the mounting posts (22) is provided with a first mounting groove (221) on the side facing the support (30). The extension direction of the first mounting groove (221) is parallel to the movement path of the support (30). At least one ball (90) is provided in each first mounting groove (221), and the support (30) is provided with a second mounting groove (32) corresponding to the first mounting groove (221).

15. The optical element driving device according to claim 13, characterized in that, The optical element driving device further includes a pressure plate (100), which is disposed on the side of the support (30) away from the base (20) and connected to the mounting post (22) to provide a restoring force for the support (30) to move toward the base (20).

16. The optical element driving device according to claim 13, characterized in that, The optical element driving device further includes: A lower spring (200) is disposed on the side of the base (20) facing the support seat (30); An upper spring (300) is disposed on the side of the support seat (30) away from the lower spring (200) and connected to the mounting post (22). The support seat (30) abuts against the lower spring (200) and the upper spring (300) respectively, so that the support seat (30) is suspended inside the accommodating space.

17. A camera device, characterized in that, The camera device includes the optical element driving device according to any one of claims 1 to 16.

18. A mobile terminal, characterized in that, The mobile terminal includes the camera device as described in claim 17.

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