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. Comprising a protective shell, blades, anti-dazzling screens, a base, a winding table, a carrier assembly, a driving assembly and a limiting assembly. The driving coil is arranged on the winding table, the driving coil is wound on the winding table, and the driving coil and the winding table form an integrated structure; the winding table is provided with a magnetic isolation sheet, and the magnetic isolation sheet is wrapped by the driving coil. The drive coil winding device has the advantages that the drive coil is formed on the winding table on the base, so that the drive coil is not scattered, the size is more stable and controllable, work stations are saved, and superposition tolerance is reduced. The magnetic isolation sheet is arranged in the winding table, magnetic induction lines can be gathered, electromagnetic force is increased, the synchronous magnetic isolation effect can prevent other coils from being influenced by magnetic force, and operation is more stable.

Description

Technical Field

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

[0002] With the development of electronic technology, electronic devices (such as smart phones, etc.) have become common and essential intelligent tools in people's hands. Users' requirements for the camera or video recording function are getting higher and higher, and the demand for micro camera modules is also increasing continuously. The structure for changing the aperture in an electronic device includes blades, light-shielding sheets, a base, a carrier assembly, and a driving assembly, etc. The driving assembly mostly uses a driving magnet and a driving coil. The existing driving coil structure mostly adopts a hollow coil winding method, which is prone to wire scattering, has an unstable structure, and requires an additional dispensing workstation. Summary of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a variable aperture camera driving device, which solves the problem that the existing driving coil adopts a hollow coil winding method, resulting in unstable structure prone to wire scattering.

[0004] To achieve the above object, the utility model is realized through the following technical solutions: A variable aperture camera driving device, the device includes:

[0005] A protective shell;

[0006] A base, which is buckled with the protective shell to form an accommodation space;

[0007] A carrier assembly, arranged in the accommodation space, including a fixed carrier and a rotating carrier that cooperate with each other;

[0008] A driving assembly, including a driving magnet and a driving coil, the driving magnet is arranged on the rotating carrier, the driving coil is arranged on the base, and the driving magnet and the driving coil are arranged opposite to each other;

[0009] A winding table, arranged on the base;

[0010] The driving coil is wound around four surfaces of the winding table, the winding table is provided with a magnetic isolation sheet, and the magnetic isolation sheet is wrapped inside by the driving coil.

[0011] Preferably, the winding table and the base are integrally formed, and a notch part for the driving coil to penetrate is formed between the winding table and the base.

[0012] Preferably, the magnetic isolation sheet is embedded in the wall surface of the winding table or preset inside the winding table.

[0013] Preferably, a fixing groove is formed on the outer wall surface of the rotating carrier, and the driving magnet is arranged in the fixing groove.

[0014] Preferably, the device further comprises:

[0015] Blades, fixed to the fixed carrier and the rotating carrier;

[0016] Light-shielding sheets, arranged between the blades and the carrier assembly.

[0017] Preferably, the device further comprises a closed-loop assembly, and the closed-loop assembly includes:

[0018] Sensing magnets, arranged at the bottom of the rotating carrier;

[0019] Sensors, arranged on the base; the sensors are arranged corresponding to the sensing magnets.

[0020] Preferably, the device further comprises an electrical connector, and the electrical connector is electrically connected to the drive coil and the sensor respectively.

[0021] Preferably, the device further comprises a limiting assembly, and the limiting assembly includes:

[0022] Guide members, arranged between the fixed carrier and the rotating carrier;

[0023] Limiting grooves, formed on the rotating carrier, and the guide members are arranged in the limiting grooves.

[0024] Preferably, the guide members include rolling elements, and the rolling elements are guide rollers or guide balls.

[0025] Preferably, the guide members include injection-molded parts, the injection-molded parts are injection-molded on the fixed carrier, an extension part is formed on the injection-molded parts, and an arc-shaped protrusion is formed on the extension part;

[0026] The arc-shaped protrusion is limited by the limiting groove. Advantageous Effects

[0027] By using a variable aperture camera driving device provided by the present utility model, the drive coil is formed on the winding table on the base, which can prevent the drive coil from unwinding, make the size more stable and controllable, save workstations, and reduce the cumulative tolerance. A magnetic isolation sheet is arranged in the two relatively arranged winding tables, which can converge magnetic induction lines, increase electromagnetic force, and the synchronous magnetic isolation effect can also prevent the other side coil from being affected by magnetic force, making the operation more stable. Description of the Drawings

[0028] Figure 1 It is an exploded structural schematic diagram of the present utility model;

[0029] Figure 2 It is a structural schematic diagram of the base of the present utility model;

[0030] Figure 3 Schematic diagram of the rotating carrier structure of the present utility model;

[0031] Figure 4 Schematic diagram of the first embodiment structure of the guiding member of the present utility model;

[0032] Figure 5 Schematic diagram of the second embodiment structure of the guiding member of the present utility model;

[0033] Figure 6 Schematic diagram of the third embodiment structure of the guiding member of the present utility model.

[0034] In the figure: 1. Protective shell, 2. Blade, 3. Light-shielding piece, 4. Fixed carrier, 5. Rotating carrier, 6. Base, 7. Sensor, 8. Electrical connector, 9. Wire-winding table, 10. Driving coil, 11. Limiting groove, 12. Fixed groove, 13. Sensing magnet, 14. Driving magnet, 15. Injection molding part, 16. Extension part, 17. Arc-shaped protrusion, 18. Guide roller, 19. Guide ball. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. As long as the effects of the present utility model can be exerted, various changes can be made to the implementation solutions.

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

[0037] Refer to Figure 1-6 To illustrate a variable-aperture camera driving device of this implementation solution.

[0038] In this embodiment, the device includes a protective shell 1, a blade 2, a light-shielding piece 3, a base 6, an electrical connector 8, a wire-winding table 9, a closed-loop component, a carrier component, and a driving component. The connection relationship and assembly method of each component will be described in detail below.

[0039] In this embodiment, the protective shell 1 and the base 6 are buckled with each other to form an accommodation space. The blade 2, the light-shielding piece 3, and the carrier component are arranged in the accommodation space. The carrier component includes a mutually cooperating fixed carrier 4 and a rotating carrier 5; specifically, the fixed carrier 4 is buckled on the rotating carrier 5, and the fixed carrier 4 is arranged outside the rotating carrier 5.

[0040] The blade 2 is fixed to the fixed carrier 4 and the rotating carrier 5. Specifically, fixing posts are provided at the tops of the fixed carrier 4 and the rotating carrier 5, and mounting holes are provided on the blade 2. The mounting holes on the blade 2 are respectively sleeved on the fixing posts of the fixed carrier 4 and the rotating carrier 5. When the rotating carrier 5 rotates, it drives the blade 2 to adjust the angle; the light-shielding piece 3 is arranged between the blade 2 and the carrier assembly.

[0041] The driving assembly includes a driving magnet 14 and a driving coil 10. The driving magnet 14 is arranged on the rotating carrier 5; specifically, a fixing groove 12 is formed on the outer wall surface of the rotating carrier 5, and the driving magnet 14 is arranged in the fixing groove 12. The driving coil 10 is arranged on the base 6, and the driving magnet 14 and the driving coil 10 are arranged opposite to each other;

[0042] The wire winding table 9 is arranged on the base 6; the driving coil 10 is wound around the wire winding table 9;

[0043] The wire winding table 9 is provided with a magnetic isolation sheet, and the magnetic isolation sheet is wrapped inside the driving coil 10. The magnetic isolation sheet is embedded in the wall surface of the wire winding table 9 or preset inside the wire winding table 9. The magnetic isolation sheet converges magnetic induction lines and increases electromagnetic force. The synchronous magnetic isolation effect can also prevent the coil on the other side from being affected by magnetic force.

[0044] The wire winding table 9 and the base 6 are integrally formed, and a notch part for the driving coil 10 to penetrate is formed between the wire winding table 9 and the base 6. Through the design of the notch part, the driving coil 10 can be wound around the four sides of the wire winding table 9 to form a wrapping fixing method, so that the driving coil 10 does not unwind, saves workstations, has more stable dimensions, and reduces stacking tolerances.

[0045] The closed-loop assembly includes a sensing magnet 13 and a sensor 7. The sensing magnet 13 is arranged at the bottom of the rotating carrier 5; the sensor 7 is arranged on the base 6; the sensor 7 and the sensing magnet 13 are arranged corresponding to each other. The sensor 7 is used to sense the rotation of the sensing magnet 13 and adjust the aperture size accordingly.

[0046] The electrical connector 8 is electrically connected to the driving coil 10 and the sensor 7 respectively. The electrical connector 8 supplies power to the driving coil 10 and the sensor 7.

[0047] The device further includes a limiting assembly. The limiting assembly includes a guiding member and a limiting groove 11. The limiting groove 11 is used to limit the rotation angle of the rotating carrier 5.

[0048] The guiding member is arranged between the fixed carrier 4 and the rotating carrier 5; the limiting groove 11 is formed on the rotating carrier 5, and the guiding member is arranged in the limiting groove 11.

[0049] The guiding member has three implementation manners. The first implementation manner of the guiding member is as follows: It includes an injection molded part 15, the injection molded part 15 is injection molded on a fixed carrier 4, an extension part 16 is formed on the injection molded part 15, and an arc-shaped protrusion 17 is formed on the extension part 16; the arc-shaped protrusion 17 is limited by a limiting groove 11.

[0050] The guiding member includes rolling elements, and the rolling elements are arranged in the limiting groove 11. The rolling elements are guiding rollers 18 or guiding balls 19, and at least one ball 19 is provided. The guiding rollers 18 or the guiding balls 19 are the second and third implementation manners of the guiding member.

[0051] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle 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: Protective case (1); A base (6) and the protective shell (1) are interlocked to form a receiving space; A carrier assembly is arranged in the accommodating space, comprising a fixed carrier (4) and a rotating carrier (5) that cooperate with each other; A driving assembly, comprising a driving magnet (14) and a driving coil (10), wherein the driving magnet (14) is disposed on the rotating carrier (5), the driving coil (10) is disposed on a base (6), and the driving magnet (14) and the driving coil (10) are disposed opposite to each other; A winding platform (9) arranged on the base (6); The driving coil (10) is wound on the winding platform (9), the winding platform (9) is provided with a magnetic isolation sheet, and the magnetic isolation sheet is wrapped inside by the driving coil (10).

2. The variable aperture camera driving device according to claim 1, characterized in that: The winding platform (9) and the base (6) are integrally formed, and a notch portion is formed between the winding platform (9) and the base (6) into which the driving coil (10) can pass.

3. The variable aperture camera driving device according to claim 1, characterized in that: The magnetic isolation sheet is embedded in the wall surface of the winding platform (9) or is preset inside the winding platform (9).

4. The variable aperture camera driving device according to claim 1, characterized in that: A fixing groove (12) is formed on the outer wall surface of the rotating carrier (5), and the driving magnet (14) is arranged in the fixing groove (12).

5. The variable aperture camera driving device according to claim 1, characterized in that: The device also includes: The blades (2) are fixed on the fixed carrier (4) and the rotating carrier (5); A light shielding sheet (3) is arranged between the blade (2) and the carrier component.

6. The variable aperture camera driving device according to claim 1, characterized in that: The device also includes a closed-loop assembly, the closed-loop assembly comprising: A sensing magnet (13) is arranged at the bottom of the rotating carrier (5); The sensor (7) is arranged on the base (6); the sensor (7) and the sensing magnet (13) are arranged correspondingly.

7. The variable aperture camera driving device according to claim 6, characterized in that: The device further comprises an electrical connector (8), wherein the electrical connector (8) is electrically connected to the drive coil (10) and the sensor (7) respectively.

8. The variable aperture camera driving device according to claim 1, characterized in that: The device further comprises a limit assembly, and the limit assembly comprises: A guide member, disposed between the fixed carrier (4) and the rotating carrier (5); A limiting groove (11) is formed on the rotating carrier (5), and the guide member is arranged in the limiting groove (11).

9. The variable aperture camera driving device according to claim 8, characterized in that: The guide member comprises a rolling body, and the rolling body is a guide roller (18) or a guide ball (19).

10. The variable aperture camera driving device according to claim 8, characterized in that: The guide member comprises an injection molded part (15), the injection molded part (15) is injection molded on the fixed carrier (4), an extension part (16) is formed on the injection molded part (15), and an arc-shaped protrusion (17) is formed on the extension part (16); The arc-shaped protrusion (17) is limited by the limiting groove (11).

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