Variable aperture imaging drive device

Abstract

The utility model relates to the technical field of electronic devices, in particular to a variable aperture camera shooting driving device. The device comprises a stator and a rotor. The rotor comprises a first rotating carrier, a second rotating carrier and a supporting carrier which are sequentially arranged from inside to outside in a sleeving mode. And a guide shaft is further included, so that the supporting carrier can do reciprocating motion on the base in the first direction and the second direction. The utility model has the advantages that the design of the mover part is improved, the mover part is changed into linear motion, and the two-cylinder guide shaft structure is adopted, so that the assembly process of raw materials is greatly simplified. The mover part is composed of three moving pieces, and two limiting pieces of each blade are connected to the first rotating carrier and the second rotating carrier respectively. And the rotating angle of the rotor can be obviously reduced, so that the blades can reach the required position more quickly, the response speed and precision are improved, and meanwhile, the energy consumption is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic devices, in particular to a variable aperture camera driving device. Background Art

[0002] With the development of electronic technology, users of electronic devices (such as smartphones or digital cameras) now have higher and higher requirements for photo or video recording functions, and the demand for miniature camera modules is also increasing. As for the camera aperture, in places with strong light, the camera can obtain a deeper depth of field and a sharper picture by reducing the aperture. In places with insufficient light, the amount of light entering can be increased by increasing the aperture, which can also obtain a pure picture with higher exposure and lower noise.

[0003] Existing variable aperture camera drive devices often use a rotating magnetic coil drive. The raw materials used for their guides are difficult to machine, making assembly complex. Furthermore, existing solutions typically incorporate two limiting posts on the blades: one acting as a moving post and the other as a fixed post. This design requires the actuator to rotate a significant angle to achieve the desired position, undoubtedly increasing the complexity and instability of the mechanical motion. Utility Model Content

[0004] In response to the deficiencies of the prior art, the present invention provides a variable aperture camera drive device, which solves the problems that the existing guide parts are difficult to process and assemble, and the blades need to rotate a large angle when adjusted, resulting in increased complexity and reduced stability.

[0005] To achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a variable aperture camera driving device, the device comprising:

[0006] The stator comprises a protective shell and a base, wherein the protective shell and the base are engaged with each other to form a receiving space;

[0007] The mover is arranged in the accommodating space, and includes a first rotating carrier, a second rotating carrier and a supporting carrier which are sequentially sleeved from the inside to the outside, and the first rotating carrier and the second rotating carrier are respectively connected to the supporting carrier;

[0008] A guide shaft is provided between the support carrier and the base, so that the support carrier can reciprocate along the first direction and the second direction on the base;

[0009] The blades are provided on the mover and are fixed to the first rotating carrier and the second rotating carrier respectively.

[0010] Preferably, the guide shaft is a cylinder and is located on both sides of the support carrier and the base in the main view projection.

[0011] Preferably, first strip grooves are formed on both sides of the bottom surface of the support carrier, and second strip grooves are formed on both sides of the top surface of the base, and the first strip groove and the second strip groove constitute a guide groove for accommodating a guide shaft.

[0012] Preferably, the support carrier is provided with a first connecting end and a second connecting end on both sides;

[0013] The first rotating carrier is provided with a first connecting column, which is movably connected to the first connecting end; the second rotating carrier is provided with a second connecting column, which is movably connected to the second connecting end.

[0014] Preferably, the first connecting end includes two oppositely arranged first strip limiters, a first opening groove is formed on the inner side of the two first strip limiters, and the first connecting column is movably connected to the first opening groove; the second connecting end includes two oppositely arranged second strip limiters, a second opening groove is formed on the inner side of the two second strip limiters, and the second connecting column is movably connected to the second opening groove.

[0015] Preferably, the device further includes a driving assembly, which includes a driving magnet and a driving coil, the driving magnets are arranged at both side ends of the supporting carrier, the driving coils are arranged at both side ends of the base, and the driving magnets and driving coils are arranged correspondingly.

[0016] Preferably, a metal reinforcement and an FPCB circuit board are preset in the base, the metal reinforcement is electrically connected to the FPCB circuit board, and the FPCB circuit board is electrically connected to the driving coil.

[0017] Preferably, the device further comprises a light shielding sheet, a plurality of positioning posts are provided on the second rotating carrier, and the light shielding sheet is connected to the positioning posts.

[0018] Preferably, the protective shell and the base are connected by snap fastening.

[0019] This utility model provides a variable aperture camera drive device that utilizes linear motion through improved design of the actuator. This design, coupled with a two-cylindrical guide shaft structure, significantly simplifies the assembly process. This design not only improves the device's stability but also increases torque output due to the optimized structure.

[0020] The mover consists of three moving parts, with the blade's two stoppers connected to the first and second rotating carriers, respectively. When the two rotating carriers rotate in opposite directions, the mover's rotation angle is significantly reduced, allowing the blade to reach the desired position more quickly. This design reduces the complexity of the mechanical movement, improves response speed and accuracy, and also reduces energy consumption.

[0021] The innovative design of this variable aperture camera drive device not only simplifies the manufacturing and assembly process and reduces costs, but also improves product performance and reliability, meeting the high requirements of modern high-end camera equipment for aperture control accuracy and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the explosion three-dimensional structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the stator after assembly of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the movable element after assembly of the utility model;

[0025] Figure 4 This is a schematic diagram of the guide shaft installation position structure of the utility model;

[0026] Figure 5 This is a schematic diagram of the base structure of the utility model;

[0027] Figure 6 This is a schematic diagram of the support carrier structure of the utility model;

[0028] Figure 7 This is a schematic structural diagram of the first rotating carrier and the second rotating carrier of the present invention being assembled on a supporting carrier;

[0029] Figure 8 This is a schematic diagram of the installation position of the driving magnet of the present utility model;

[0030] Figure 9 This is a schematic diagram of the installation position of the drive coil of the utility model;

[0031] Figure 10 This is a top view of the blade of the utility model being assembled on the first rotating carrier and the second rotating carrier;

[0032] Figure 11 This is an overall diagram of the utility model.

[0033] Explanation of symbols in the figure

[0034] 1. Protective shell, 2. Blades, 3. Shading sheet, 4. First rotating carrier, 5. Second rotating carrier, 6. Support carrier, 7. Guide shaft, 8. Base, 9. Guide groove, 10. Buckle, 11. First connecting end, 12. Second connecting end, 13. First connecting column, 14. Second connecting column, 15. Driving magnet, 16. Driving coil. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. As long as the effects of the present invention can be exerted, various changes can be made to the embodiments.

[0036] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process.

[0037] Reference Figure 1-11 The variable aperture imaging drive device of this embodiment will be described.

[0038] The device includes a stator and a mover; Figure 2 As shown, the stator includes a protective shell 1 and a base 8, which are connected by a buckle 10 and are fastened to each other to form an accommodating space inside; the mover is arranged in the accommodating space. Figure 3 As shown, the mover includes a first rotating carrier 4, a second rotating carrier 5 and a supporting carrier 6 which are sequentially sleeved from the inside to the outside, wherein parts of the first rotating carrier 4 and the second rotating carrier 5 are respectively connected to the supporting carrier 6.

[0039] Specific as Figure 7 As shown, a first connection end 11 and a second connection end 12 are provided on both sides of the support carrier 6; a first connection column 13 is provided on the first rotating carrier 4, and the first rotating carrier 4 is movably connected to the first connection end 11 of the support carrier 6 via the first connection column 13; a second connection column 14 is provided on the second rotating carrier 5, and the second rotating carrier 5 is movably connected to the second connection end 12 of the support carrier 6 via the second connection column 14. Because the first connection end 11 clamps the first connection column 13 and the second connection end 12 clamps the second connection column 14, when the support carrier 6 in the mover performs linear motion in the first direction or the second direction, the first connection end 11 will move while clamping the first connection column 13, and the second connection end 12 will move while clamping the second connection column 14, so that the support carrier 6 drives the first rotating carrier 4 and the second rotating carrier 5 to move synchronously. Specifically, the first rotating carrier 4 and the second rotating carrier 5 rotate in opposite directions.

[0040] In one embodiment, the first connecting end 11 includes two relatively arranged first strip limit members, a first opening groove is formed on the inner side of the two first strip limit members, and the first connecting column 13 is movably connected to the first opening groove; the second connecting end 12 includes two relatively arranged second strip limit members, a second opening groove is formed on the inner side of the two second strip limit members, and the second connecting column 14 is movably connected to the second opening groove.

[0041] like Figure 1 and Figure 4 As shown, the device further includes a guide member, in the form of a cylindrical guide shaft 7, disposed between the support carrier 6 and the base 8. This guide member enables the support carrier 6 to reciprocate in first and second directions on the base 8. In this embodiment, the cylindrical guide shaft 7 is used as the guide connection between the bottom of the support carrier 6 (i.e., the bottom of the mover) and the base 8, replacing the existing spherical structure. This simplifies the processing and assembly process, improves stability, and increases torque.

[0042] Specifically, it is located on both sides of the support carrier 6 and the base 8 in the main view projection.

[0043] Further, such as Figure 5 As shown, first strip grooves are formed on both sides of the bottom surface of the support carrier 6, and second strip grooves are formed on both sides of the top surface of the base 8. The first strip groove and the second strip groove form a guide groove 9 that can accommodate the guide shaft 7. During assembly, the guide shaft 7 is embedded in the guide groove 9 formed by the first strip groove and the second strip groove.

[0044] like Figure 10 As shown, the device further includes a blade 2 mounted on a mover, which is fixed to a first rotating carrier 4 and a second rotating carrier 5. In one embodiment, two stoppers of the blade 2 are connected to the first rotating carrier 4 and the second rotating carrier 5, respectively. When the first rotating carrier 4 and the second rotating carrier 5 rotate in opposite directions, the rotation angle of the mover can be reduced, so that the blade 2 reaches the desired position.

[0045] like Figure 1 As shown, the device further includes a light shielding plate 3 , a plurality of positioning posts are provided on the second rotating carrier 5 , and the light shielding plate 3 is connected to the positioning posts of the first rotating carrier 4 .

[0046] like Figure 8 and Figure 9 As shown, the device further includes a driving assembly, which includes a driving magnet 15 and a driving coil 16. Specifically, the driving magnet 15 is provided at both ends of the support carrier 6, and the driving coil 16 is provided at both ends of the base 8. During assembly, the driving magnet 15 and the driving coil 16 are provided in correspondence.

[0047] A metal reinforcement and an FPCB circuit board are preset in the base 8 . The metal reinforcement is electrically connected to the FPCB circuit board, and the FPCB circuit board is electrically connected to the driving coil 16 .

[0048] Working principle: When the external electrical signal is transmitted to the FPCB circuit board through the metal reinforcement and then to the driving coil 16, the driving coil 16 interacts with the driving magnet 15, driving the supporting carrier 6 to perform linear motion on the base 8 through the guide shaft 7, and drives the first rotating carrier 4 and the second rotating carrier 5 to perform counter-rotating motion through the first connecting end 11 and the first connecting column 13 and the second connecting end 12 and the second connecting column 14, so that the blade 2 reaches the required position, thereby completing the adjustment of the aperture.

[0049] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A variable aperture camera driving device, characterized in that: The device comprises: The stator comprises a protective shell (1) and a base (8), wherein the protective shell (1) and the base (8) are engaged with each other to form a receiving space; The mover is arranged in the accommodating space and comprises a first rotating carrier (4), a second rotating carrier (5) and a supporting carrier (6) which are sequentially sleeved from the inside to the outside, and the first rotating carrier (4) and the second rotating carrier (5) are respectively connected to the supporting carrier (6); A guide shaft (7) is provided between the support carrier (6) and the base (8), enabling the support carrier (6) to reciprocate on the base (8) in a first direction and a second direction; The blades (2) are provided on the mover and are fixed to the first rotating carrier (4) and the second rotating carrier (5), respectively.

2. The variable aperture camera driving device according to claim 1, characterized in that: The guide shaft (7) is a cylinder and is located on both sides of the support carrier (6) and the base (8) in the projection of the main view.

3. The variable aperture camera driving device according to claim 2, wherein: The bottom surface of the support carrier (6) is provided with first strip grooves on both sides, and the top surface of the base (8) is provided with second strip grooves on both sides. The first strip groove and the second strip groove form a guide groove (9) capable of accommodating the guide shaft (7).

4. The variable aperture camera driving device according to claim 1, wherein: The support carrier (6) is provided with a first connecting end (11) and a second connecting end (12) on both sides; The first rotating carrier (4) is provided with a first connecting column (13), and the first connecting column (13) is movably connected to the first connecting end (11); the second rotating carrier (5) is provided with a second connecting column (14), and the second connecting column (14) is movably connected to the second connecting end (12).

5. The variable aperture camera driving device according to claim 4, characterized in that: The first connecting end (11) includes two first strip-shaped limiting members arranged opposite to each other, a first opening groove is formed on the inner side of the two first strip-shaped limiting members, and the first connecting column (13) is movably connected to the first opening groove; the second connecting end (12) includes two second strip-shaped limiting members arranged opposite to each other, a second opening groove is formed on the inner side of the two second strip-shaped limiting members, and the second connecting column (14) is movably connected to the second opening groove.

6. The variable aperture camera driving device according to claim 1, characterized in that: The device further comprises a driving assembly, wherein the driving assembly comprises a driving magnet (15) and a driving coil (16), wherein the driving magnet (15) is arranged at both side ends of the supporting carrier (6), and the driving coil (16) is arranged at both side ends of the base (8), and the driving magnet (15) and the driving coil (16) are arranged correspondingly.

7. The variable aperture camera driving device according to claim 1, characterized in that: A metal reinforcement and an FPCB circuit board are preset in the base (8); the metal reinforcement is electrically connected to the FPCB circuit board, and the FPCB circuit board is electrically connected to the drive coil (16).

8. The variable aperture camera driving device according to claim 1, characterized in that: The device further comprises a light shielding sheet (3); a plurality of positioning posts are provided on the second rotating carrier (5); and the light shielding sheet (3) is connected to the positioning posts.

9. The variable aperture camera driving device according to claim 1, characterized in that: The protective shell (1) and the base (8) are fixedly connected via a buckle (10).

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