Imaging drive device
By using guide components and elastic components of balls and rollers in the camera driving device, the problem of high space and cost in the anti-shake structure in the prior art is solved, effective space savings and cost reduction are achieved, and reset functions are also provided.
Patent Information
- Application Number
- CN202421822570.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-30
AI Technical Summary
In the prior art, the anti-shake structure uses two slide rails, which leads to the problem of large internal space and high cost.
The imaging driving device including optical elements, lens carrier, base, connector, elastic component, drive component, guide component and electrical connector is adopted. The rotation shaft movement of the lens carrier is realized through the ball and roller structure of the guide component and the pre-pressure and reset force of the elastic component.
Compared with the existing dual-sliding shaft structure, when the anti-shake effect is roughly flat, some space can be saved and cost can be reduced, while the reset function can be achieved through elastic components.
Smart Images
Figure CN222928454U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of optical element driving, and particularly relates to a camera driving device. Background Art
[0002] With the popularization and development of smart phones, mobile phone photography has become a commonly used shooting method. During the use of the lens, hand-held devices or other external movements may cause the shooting device to shake. When the shutter speed is slow, the shake reduces the clarity of the image. Therefore, mobile phones with both optical image stabilization functions and autofocus functions are increasingly favored by users.
[0003] The existing anti-shake structure sets two slide rails, enabling the lens module to move along two different directions according to requirements, thereby achieving clear imaging. However, it uses a relatively large internal space and has a relatively high cost. Summary of the Utility Model
[0004] The purpose of the embodiments of this application is to provide a camera driving device to solve the problems in the prior art that when the anti-shake structure uses two slide rails to achieve clear imaging, it uses a relatively large internal space and has a relatively high cost.
[0005] To solve the above technical problems, the embodiments of this application provide the following technical solutions:
[0006] This application provides a camera driving device, including: an optical element, a lens carrier, a base, a connecting member, an elastic component, a driving component, a guiding component, and an electrical connecting member; the optical element is fixed within the lens carrier, the lens carrier is mounted on the base, the connecting member is disposed between the bottom of the lens carrier and the base, an elastic component is provided between the lens carrier and the base, the driving component is disposed between the lens carrier and the base, an electrical connecting member is provided on the base, the electrical connecting member is electrically connected to the driving component, and the driving component drives the lens carrier to perform a rotational movement by means of the guiding component;
[0007] The guiding component includes a first guiding member and a second guiding member. The first guiding member is disposed between the bottom of the lens carrier and the connecting member, and the second guiding member is disposed between the bottom of the connecting member and the base. The second guiding member includes balls and a roller shaft.
[0008] In some alternative embodiments of this application, a first guiding groove a is provided at the bottom of the lens carrier, a first guiding groove b corresponding to the first guiding groove a is provided on the connecting member, and the first guiding member is disposed between the first guiding groove a and the first guiding groove b;
[0009] Among them, the first guiding member is a guide rod.
[0010] In some modified embodiments of the present application, a second guiding groove a is provided at the bottom of the connecting member, a second guiding groove b corresponding to the second guiding groove a is provided on the base, and the second guiding member is disposed between the second guiding groove a and the second guiding groove b.
[0011] In some modified embodiments of the present application, the elastic component includes a first elastic member and a second elastic member. The first elastic member is disposed on the lens carrier and the connecting member and is fixed to the lens carrier and the connecting member respectively; the second elastic member is disposed on the connecting member and the base and is fixed to the connecting member and the base respectively.
[0012] In some modified embodiments of the present application, first elastic member fixing platforms for fixing the first elastic member are provided at the bottom of the lens carrier and on the connecting member; second elastic member fixing platforms for fixing the second elastic member are provided at the bottom of the connecting member and on the base.
[0013] In some modified embodiments of the present application, the driving component includes a first driving component and a second driving component. The first driving component is disposed between the side surface of the lens carrier and the side retaining wall of the base, and the second driving component is disposed between the bottom of the lens carrier and the base;
[0014] The first driving component includes two groups of first driving magnets and two groups of first driving coils. The two groups of first driving magnets are respectively disposed on the side surface of the lens carrier, and the two groups of first driving coils are respectively disposed on the side retaining wall of the base and are arranged corresponding to the first driving magnets; the second driving component includes a second driving magnet and a second driving coil. The second driving magnet is disposed on the bottom of the lens carrier, and the second driving coil is disposed on the bottom plate of the base and is arranged corresponding to the second driving magnet.
[0015] In some modified embodiments of the present application, first driving coil limiting grooves for limiting the first driving coils are provided on the side surface of the lens carrier and on the side retaining wall of the base, and second driving coil limiting grooves for limiting the second driving coils are provided on the bottom of the lens carrier and on the bottom plate of the base.
[0016] In some modified embodiments of the present application, it further includes: a closed-loop control component. The closed-loop control component includes a first closed-loop controller and a second closed-loop controller. The first closed-loop controller is disposed in the annular space of the first driving coil, and the second closed-loop controller is disposed in the annular space of the second driving coil;
[0017] The electrical connector is electrically connected to the first driving coil, the second driving coil, the first closed-loop controller, and the second closed-loop controller.
[0018] In some modified embodiments of the present application, it further includes: a magnetic attraction sheet, which is arranged inside the base, and the magnetic attraction sheet attracts the second driving magnet to provide a pre-pressure for the first guiding member and the second guiding member.
[0019] In some modified embodiments of the present application, it further includes: a protective shell, which is buckled on the base.
[0020] Compared with the prior art, for the camera driving device provided in the present application, since the second guiding member is configured as a structure of a ball plus a roller shaft, compared with the existing double sliding shafts, when the anti-shake effect is generally the same, a part of the space can be saved, and the cost is saved;
[0021] The elastic component is added, which can not only provide a pre-pressure for the guiding component, but also provide a restoring force to realize the restoring function. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] By referring to the drawings and reading the detailed description below, the above and other objects, features, and advantages of the exemplary embodiments of the present application will become easy to understand. In the drawings, several embodiments of the present application are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, where:
[0023] Figure 1 Schematically shows an exploded structural view of the camera driving device in the embodiment;
[0024] Figure 2 Schematically shows a structural view of the electrical connector on the base connected to the driving coil and the closed-loop control component in the embodiment;
[0025] Figure 3 Schematically shows a top view of the base in the embodiment;
[0026] Figure 4 Schematically shows a top view of the second elastic member connected to the base and the connector in the embodiment;
[0027] Figure 5 Schematically shows a top view of the second guiding member connected to the base in the embodiment;
[0028] Figure 6 Schematically shows a top view of the first elastic member connected to the lens carrier and the connector in the embodiment;
[0029] Figure 7Schematically shows a schematic structural diagram of the connection between the first guide member, the lens carrier, and the connecting member in the embodiment;
[0030] Figure 8 Schematically shows a schematic structural diagram of the second perspective of the connecting member in the embodiment;
[0031] Figure 9 Schematically shows a schematic structural diagram of the second perspective of the connecting member in the embodiment;
[0032] Figure 10 Schematically shows a schematic structural diagram of the lens carrier in the embodiment;
[0033] Figure 11 Schematically shows a schematic structural diagram of the imaging driving device in the embodiment;
[0034] Explanation of the reference numerals in the drawings:
[0035] 1. Optical element; 2. Lens carrier; 21. First guide groove a; 22. First driving magnet fixing groove; 23. Second driving magnet fixing groove; 24. Optical element fixing groove; 3. Base; 31. Second guide groove b; 32. Second elastic member fixing table; 33. First driving coil fixing groove; 34. Second driving coil fixing groove; 4. Connecting member; 41. First guide groove b; 42. Second guide groove a; 43. First elastic member fixing table; 5. Elastic component; 51. First elastic member; 52. Second elastic member; 6. Driving component; 61. First driving component; 611. First driving magnet; 612. First driving coil; 62. Second driving component; 621. Second driving magnet; 622. Second driving coil; 7. Guide component; 71. First guide member; 72. Second guide member; 8. Electrical connecting member; 9. Closed-loop control component; 91. First closed-loop controller; 92. Second closed-loop controller; 10. Protective shell. Detailed implementation manners
[0036] Hereinafter, the exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art.
[0037] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meanings understood by those skilled in the art to which this application belongs. Embodiment
[0038] As Figures 1 to 11As shown in the figure, this embodiment provides a camera driving device, including: an optical element 1, a lens carrier 2, a base 3, a connecting member 4, an elastic component 5, a driving component 6, a guiding component 7, an electrical connecting member 8, a closed-loop control component 9, a magnetic sheet, and a protective shell 10; the protective shell 10 is fastened to the base 3 to form an accommodation space for accommodating other components. The optical element 1 is fixed inside the lens carrier 2, the lens carrier 2 is mounted on the base 3, the connecting member 4 is disposed between the bottom of the lens carrier 2 and the base 3, an elastic component 5 is provided between the lens carrier 2 and the base 3, the driving component 6 is disposed between the lens carrier 2 and the base 3, the magnetic sheet is disposed inside the base 3 to pre-press the guiding component 7, an electrical connecting member 8 is provided on the base 3, the electrical connecting member 8 is electrically connected to the driving component 6, the closed-loop control component 9 is electrically connected to the electrical connecting member 8 and the driving component 6, and the driving component 6 drives the lens carrier 2 to perform a rotating shaft movement by means of the guiding component 7;
[0039] The guiding component 7 includes a first guiding member 71 and a second guiding member 72. The first guiding member 71 is disposed between the bottom of the lens carrier 2 and the connecting member 4, and the second guiding member 72 is disposed between the bottom of the connecting member 4 and the base 3. The second guiding member 72 includes balls and rollers; wherein, the electrical connecting member 8 is preferably an FPCB circuit board.
[0040] Specifically, the guiding component 7 in this application adopts the form of a sliding shaft + roller for cooperation. Compared with the existing double sliding shafts, under the condition that the anti-shake effect is generally the same, a part of space can be saved and the cost can be reduced; by adopting the elastic component 5, it can not only provide a pre-pressure for the guiding component 7, but also provide a reset force to realize the reset function.
[0041] As Figure 8 、 Figure 10 shown, in a specific implementation, a first guiding groove a21 is provided at the bottom of the lens carrier 2, and a first guiding groove b41 corresponding to the first guiding groove a21 is provided on the connecting member 4. The first guiding member 71 is disposed between the first guiding groove a21 and the first guiding groove b41;
[0042] Among them, the first guiding member 71 is a guide rod.
[0043] As Figure 2 、 Figure 9 shown, in a specific implementation, a second guiding groove a42 is provided at the bottom of the connecting member 4, and a second guiding groove b31 corresponding to the second guiding groove a42 is provided on the base 3. The second guiding member 72 is disposed between the second guiding groove a42 and the second guiding groove b31.
[0044] As shown in Figure 1 、 Figure 3 、 Figure 4 、 Figure 8As shown, in a specific implementation, the elastic component 4 includes a first elastic member 41 and a second elastic member 42. The first elastic member 41 is disposed on the lens carrier 2 and the connecting member 4 and is fixed to the lens carrier 2 and the connecting member 4 respectively. The second elastic member 42 is disposed on the connecting member 4 and the base 3 and is fixed to the connecting member 4 and the base 3 respectively. First elastic member fixing platforms 43 are provided on the bottom of the lens carrier 2 and the connecting member 4 for fixing the first elastic member 51. Second elastic member fixing platforms 32 are provided on the bottom of the connecting member 4 and the base 3 for fixing the second elastic member 52.
[0045] As Figure 1 、 Figure 2 shown, in a specific implementation, the driving component 6 includes a first driving component and a second driving component. The first driving component is disposed between the side surface of the lens carrier 2 and the side retaining wall of the base 3, and the second driving component is disposed between the bottom of the lens carrier 2 and the base 3.
[0046] The first driving component includes two groups of first driving magnets 611 and two groups of first driving coils 612. The two groups of first driving magnets 611 are respectively disposed on the side surface of the lens carrier 2, and the two groups of first driving coils 612 are respectively disposed on the side retaining wall of the base 3 and are arranged corresponding to the first driving magnets 611. The second driving component includes a second driving magnet 621 and a second driving coil 622. The second driving magnet 621 is disposed on the bottom of the lens carrier 2, and the second driving coil 622 is disposed on the bottom plate of the base 3 and is arranged corresponding to the second driving magnet 621. First driving coil limiting grooves 33 for limiting the first driving coil 612 are provided on the side surface of the lens carrier 2 and the side retaining wall of the base 3, and second driving coil limiting grooves 34 for limiting the second driving coil 622 are provided on the bottom of the lens carrier 2 and the bottom plate of the base 3.
[0047] As Figure 2 shown, in a specific implementation, the closed-loop control component 9 includes a first closed-loop controller 91 and a second closed-loop controller 92. The first closed-loop controller 91 is disposed in the annular space of the first driving coil 612, and the second closed-loop controller 92 is disposed in the annular space of the second driving coil 622.
[0048] The electrical connector 8 is electrically connected to the first driving coil 612, the second driving coil 622, the first closed-loop controller 91, and the second closed-loop controller 92.
[0049] As Figure 1 shown, in a specific implementation, a magnetic sheet (not shown in the figure) is disposed inside the base 3, and the magnetic sheet attracts the second driving magnet 622 to provide a pre-pressure for the first guiding member 51 and the second guiding member 52.
[0050] Working principle:
[0051] The electrical connector 8 receives an external electrical signal and transmits the electrical signal to the second driving coil 622 respectively. The second driving coil 622 interacts with the magnetic field generated by the second driving magnet 621 to form a Lorentz force, thereby jointly driving the lens carrier 2 and the optical element 1 to rotate with the Y-axis as the rotation axis;
[0052] The electrical connector 8 receives an external electrical signal and transmits the electrical signal to two groups of first driving coils 612 respectively. The two groups of first driving coils 612 interact with the magnetic fields generated by the two groups of first driving magnets 611 respectively to form Lorentz forces, thereby driving the lens carrier 2 and the optical element 1 to rotate with the X-axis as the rotation axis.
[0053] Control principle:
[0054] The electrical connector 8 receives an external electrical signal and transmits the control signal to the second closed-loop controller 92, thereby detecting and controlling the movement of the lens carrier 2 and the optical element 1 with the Y-axis as the rotation axis;
[0055] The electrical connector 8 receives an external electrical signal and transmits the control signal to the first closed-loop controller 91, thereby detecting and controlling the movement of the lens carrier 2 and the optical element 1 with the X-axis as the rotation axis.
[0056] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims
1. A camera driving device, characterized in that: include: Optical elements, lens carriers, bases, connectors, elastic components, drive components, guide components and electrical connectors; The optical element is fixed in the lens carrier, the lens carrier is mounted on the base, the connecting member is arranged between the bottom of the lens carrier and the base, an elastic component is arranged between the lens carrier and the base, the driving component is arranged between the lens carrier and the base, an electrical connecting member is arranged on the base, the electrical connecting member is electrically connected to the driving component, and the driving component drives the lens carrier to perform a rotational movement with the aid of the guide component; The guide assembly includes a first guide member and a second guide member, the first guide member is arranged between the bottom of the lens carrier and the connecting member, the second guide member is arranged between the bottom of the connecting member and the base, and the second guide member includes a ball and a roller.
2. The imaging driving device according to claim 1, wherein: The bottom of the lens carrier is provided with a first guide groove a, the connecting member is provided with a first guide groove b corresponding to the first guide groove a, and the first guide member is arranged between the first guide groove a and the first guide groove b; Wherein, the first guide member is a guide rod.
3. The imaging driving device according to claim 1, wherein: A second guide groove a is provided at the bottom of the connecting member, a second guide groove b corresponding to the second guide groove a is provided on the base, and the second guide member is provided between the second guide groove a and the second guide groove b.
4. The imaging driving device according to claim 1, wherein: The elastic component includes a first elastic member and a second elastic member, the first elastic member is arranged on the lens carrier and the connecting member, and is fixed to the lens carrier and the connecting member respectively; the second elastic member is arranged on the connecting member and the base, and is fixed to the connecting member and the base respectively.
5. The imaging driving device according to claim 4, wherein: A first elastic member fixing platform for fixing the first elastic member is disposed on the bottom of the lens carrier and the connecting member; a second elastic member fixing platform for fixing the second elastic member is disposed on the bottom of the connecting member and the base.
6. The imaging driving device according to claim 1, wherein: The driving assembly includes a first driving assembly and a second driving assembly, wherein the first driving assembly is arranged between the side of the lens carrier and the side retaining wall of the base, and the second driving assembly is arranged between the bottom of the lens carrier and the base; The first driving component includes two groups of first driving magnets and two groups of first driving coils, the two groups of the first driving magnets are respectively arranged on the side surfaces of the lens carrier, and the two groups of the first driving coils are respectively arranged on the side retaining walls of the base, and are arranged corresponding to the first driving magnets; the second driving component includes a second driving magnet and a second driving coil, the second driving magnet is arranged on the bottom of the lens carrier, and the second driving coil is arranged on the bottom plate of the base, and is arranged corresponding to the second driving magnet.
7. The imaging driving device according to claim 6, wherein: A first drive coil limiting groove for limiting the first drive coil is provided on the side surface of the lens carrier and the side retaining wall of the base, and a second drive coil limiting groove for limiting the second drive coil is provided on the bottom of the lens carrier and the bottom plate of the base.
8. The imaging driving device according to claim 6, wherein: Also includes: A closed-loop control component, the closed-loop control component comprising a first closed-loop controller and a second closed-loop controller, the first closed-loop controller being disposed in an annular space of the first drive coil, and the second closed-loop controller being disposed in an annular space of the second drive coil; The electrical connector is electrically connected to the first drive coil, the second drive coil, the first closed-loop controller, and the second closed-loop controller.
9. The imaging driving device according to claim 6, wherein: Also includes: A magnetic sheet is disposed inside the base, and the magnetic sheet is attracted to the second driving magnet to provide pre-pressure for the first guide member and the second guide member.
10. The imaging driving device according to claim 1, wherein: Also includes: A protective shell is buckled on the base.