Anti-shake camera shooting driving device

Abstract

The utility model aims to provide an anti-shake camera shooting driving device, which comprises a protective shell and a base which are buckled with each other to form an accommodating cavity, an accommodating cavity is formed in the base, an optical element protruding out of the protective shell, a carrier for bearing the optical element and a focusing driving assembly are arranged in the accommodating cavity, the anti-shake reed comprises a plane part and a bending part, and the bending part is provided with an elastic structure, so that the anti-shake reed can be elastically connected between the carrier and the base; wherein the elastic structure comprises a spring wire which is formed by bending and extending inwards from the end part of the bending part, and the wall surfaces of the bent and extended spring wire do not interfere with each other. The bent anti-shake reeds which are independently arranged at the four corners of the supporting carrier are adopted, bosses at the four corners of a base in the prior art are omitted, the deformation amount of the base is reduced, the size control precision is improved, meanwhile, the anti-shake reeds are vertically and elastically supported between the carrier and the base, the K value of the reeds in the Z direction is larger, and compared with an original reed bent structure, the performance yield is easier to control.

Description

Technical Field

[0001] The utility model relates to the technical field of camera devices, in particular to an anti-shake camera driving device. Background Art

[0002] The optical systems of common handheld optical products on the market, such as digital cameras, video cameras, and mobile phones, are composed of an optical lens group and a camera drive device. In the process of shooting, in order to adapt to various scenes, it is easy to be shaken by external forces during focusing or shooting, such as shaking caused by hand-held, vehicle movement, and external environmental factors, which leads to problems such as unclear imaging or blurred images.

[0003] Common OIS anti-shake structures include: reed bending type, suspension wire, ball bearing, reed splicing type, etc. Each anti-shake structure has its disadvantages, such as:

[0004] The reed bending type has the problem that the four corner columns of the base are too high, which makes the base easy to deform, the limit size is NG, and the direct part is a hanging structure. The K value of the reed in the Z direction is insufficient, and the performance yield is difficult to improve.

[0005] The direction of the suspended wire OIS relies on the suspension wire for recovery and support. The suspension wire is a single structure with limited stress adjustment ability. There is no better solution after reliability fracture, and there is a bottleneck in the subsequent demand for large stroke and large weight. At the same time, the suspended wire motor requires upper and lower springs plus 4 sets of suspension wires for assembly, and the cost of raw materials is relatively high.

[0006] The reed splicing process is complex and the manufacturing process is difficult; the reed splicing is done by welding, which has a high risk of open circuit; multiple sets of elastic wires are required for assembly, and the cost of raw materials is relatively high.

[0007] The abnormal noise problem of ball-type machines is difficult to deal with; grease makes it impossible to clean, the cleanliness requirements of the manufacturing process are strict, and the POG risk is high; the heavy mover can easily press pits on the injection molded parts, causing movement lag.

[0008] Therefore, there is a need for an anti-shake camera driving device that is high in strength, low in cost and easy to manufacture. Utility Model Content

[0009] In view of the deficiencies of the prior art, the utility model provides an anti-shake camera driving device, which solves the problems of complex process, high strength and high cost of the existing anti-shake structure.

[0010] To achieve the above object, the utility model is implemented through the following technical solutions: an anti-shake camera driving device, including a protective shell and a base, which are buckled together to form a receiving cavity; a metal reinforcement and a closed-loop assembly are provided at the bottom of the base;

[0011] The accommodating cavity is provided with an optical element protruding from the protective shell, and a carrier and a focus driving assembly carrying the optical element, and a reed assembly is provided on the carrier;

[0012] The reed assembly comprises an anti-shake reed, a first focusing reed and a second focusing reed;

[0013] The anti-shake reed comprises:

[0014] The plane portion can be fixedly connected to the carrier;

[0015] The bending portion is connected to the plane portion and extends downward along the carrier to be bent and fixed on the base; the bending portion is provided with an elastic structure so that the anti-shake spring can be elastically connected between the carrier and the base;

[0016] Wherein, the elastic structure includes a spring wire formed by bending and extending inward at the end of the bending portion, and the wall surfaces of the bent and extended spring wire do not interfere with each other.

[0017] Preferably, the bent portion is connected to the plane portion obliquely or vertically;

[0018] There are two spring wires, which are arranged on the left and right sides of the bending part and are symmetrically arranged.

[0019] Preferably, the tail ends of the two spring wires are connected as a whole to form a combined section, and the combined section extends downward to form a hanging wire.

[0020] Preferably, the bottom end of the suspension wire protrudes from the bent portion and is connected to the base.

[0021] Preferably, the bending portion includes a first bending spring sheet and a second bending spring sheet, and the two spring wires are respectively formed on the first bending spring sheet and the second bending spring sheet.

[0022] Preferably, the fixing portion comprises:

[0023] A first plane plate, a surface of which is provided with a first fixed end; the bending portion is connected to the first plane plate;

[0024] The second plane plate is connected to the first plane plate through a connecting piece, and a second fixing end is arranged on the surface of the second plane plate.

[0025] Preferably, the carrier comprises a lens carrier and a support carrier, and the lens carrier is installed in the support carrier;

[0026] The four corners of the support carrier are formed with adapting parts capable of accommodating the anti-shake reed.

[0027] Preferably, the adapting portion is a notch or groove formed at the four corners of the supporting carrier.

[0028] Preferably, the focus driving component comprises:

[0029] A driving magnet is arranged in the supporting carrier;

[0030] A focusing coil is fixed on the lens carrier;

[0031] Wherein, the outer side wall of the lens carrier is provided with a groove, and the focusing coil is arranged in the groove.

[0032] Preferably, it also includes an anti-shake coil, and the anti-shake coil is fixed on the base. Beneficial Effects

[0033] Compared with the prior art, the anti-shake camera driving device provided by the utility model has the following improvements and advantages:

[0034] Firstly, it adopts the anti-shake spring which is independently arranged at the four corners of the supporting carrier, eliminates the bosses at the four corners of the base in the prior art, reduces the deformation of the base, and increases the accuracy of dimensional control. At the same time, the anti-shake spring is elastically supported up and down between the carrier and the base, so that the K value of the spring in the Z direction is larger, and the performance yield is easier to control than the original spring bending structure. The base column is eliminated to save space, which can be used to supplement the strength of the bracket and increase the coil length to increase the electromagnetic force.

[0035] Secondly, the anti-shake spring increases reliability, reduces the risk of breakage, and reduces the cost of raw materials; since the hanging wire structure is reduced, the manufacturing process is simpler, more efficient, and the process cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the explosion structure of the utility model;

[0037] Figure 2 This is a schematic diagram of the base structure of the utility model;

[0038] Figure 3 This is a schematic diagram of the focusing electrical connection of the utility model;

[0039] Figure 4 This is a schematic diagram of the connection structure between the first focusing reed and the carrier of the utility model;

[0040] Figure 5 This is a schematic diagram of the structure of the first focusing reed and the second focusing reed of the utility model;

[0041] Figure 6 This is a schematic diagram of the installation position of the focus coil of the utility model;

[0042] Figure 7 This is a schematic diagram of the installation position of the anti-shake reed of the utility model;

[0043] Figure 8 This is a schematic diagram of the anti-shake reed structure of the utility model;

[0044] Fig. 9 This is a schematic diagram of the structure of the anti-shake coil of the utility model;

[0045] Fig.10 This is a schematic diagram of the driving magnet structure of the utility model;

[0046] Fig.11 It is a schematic diagram of the overall structure of the utility model after assembly.

[0047] Description of reference numerals:

[0048] 1. Optical element; 2. Protective shell; 3. Anti-shake spring; 31. Plane part; 311. First fixed end; 312. Second fixed end; 32. Bending part; 321. First bending spring; 322. Second bending spring; 323. Spring wire; 33. Suspension wire; 4. First focusing spring; 5. Lens carrier; 6. Support carrier; 7. Driving magnet; 8. Second focusing spring; 9. Anti-shake coil; 10. Base; 11. Closed-loop assembly; 12. Metal reinforcement; 13. Adapter; 14. Focus coil. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. As long as the effect of the utility model can be exerted, various changes can be made to the implementation scheme.

[0050] 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 the art. The following mainly introduces the working principle and process.

[0051] Reference Figure 1-11 The anti-shake image pickup drive device according to this embodiment will be described.

[0052] It includes a protective shell 2 and a base 10. The protective shell 2 and the base 10 are buckled together to form a receiving cavity;

[0053] It should be noted that in this embodiment, the base 10 eliminates the four-corner bosses on the base in the prior art, thereby reducing the deformation of the base and increasing the dimensional control accuracy. At the same time, the Z-direction K value of the anti-shake spring 3 is larger, and the performance yield is easier to control compared with the prior art; the elimination of the base column saves space and can be used to supplement the bracket strength and increase the coil length to increase the electromagnetic force.

[0054] The bottom of the base 10 is provided with a metal reinforcement 12 and a closed loop assembly 11. The closed loop assembly 11 includes an anti-shake displacement sensor and a focus displacement sensor, which are used to sense the movement of the driving magnet 7.

[0055] The accommodating cavity is provided with an optical element 1 protruding from the protective shell 2, as well as a carrier carrying the optical element 1 and a focus driving assembly, and a reed assembly is provided on the carrier;

[0056] In one embodiment, the carrier includes a lens carrier 5 and a support carrier 6. The lens carrier 5 is installed in the support carrier 6 and is suspended and supported by a reed assembly.

[0057] The optical element 1 is mounted on the lens carrier 5. A through hole is formed on the protective shell 2, and the lens end of the optical element 1 passes through the through hole.

[0058] The reed assembly includes an anti-shake reed 3, a first focus reed 4, and a second focus reed 8. When installed, the first focus reed 4 is arranged on the top of the carrier and is respectively fixed to the lens carrier 5 and the support carrier 6. The second focus reed 8 is arranged on the bottom of the carrier and is respectively fixed to the lens carrier 5 and the support carrier 6.

[0059] The anti-shake spring 3 includes a plane portion 31 and a bent portion 32. The plane portion 31 and the bent portion 32 can be bent as one piece or welded separately.

[0060] In practice, the plane portion 31 can be fixedly connected to the carrier. The bending portion 32 is connected to the plane portion 31, and is bent downwardly along the carrier and fixed to the base 10; the bending portion 32 is provided with an elastic structure, so that the anti-shake spring 3 can be elastically connected between the carrier and the base 10;

[0061] The elastic structure includes a spring wire 323 formed by continuously bending and extending inward at the end of the bending portion 32 , and the wall surfaces of the bent and extended spring wire 323 do not interfere with each other, that is, the bent spring wires 323 do not contact each other.

[0062] The bending portion 32 is connected to the fixing portion 31 in an inclined or vertical manner. There are two spring wires 323 , which are respectively arranged on the left and right sides of the bending portion 32 and are symmetrically arranged.

[0063] In this embodiment, a bent independent anti-shake spring 3 with a bent portion 32 is used to replace the suspension wire structure in the prior art, which can reduce stress, reduce the risk of reliability fracture, reduce the cost of raw materials, and make the manufacturing process simpler, more efficient, and lower the process cost.

[0064] The tail ends of the two spring wires 323 are connected to form a combined section, and the combined section extends downward to form a suspension wire 33.

[0065] The bending portion 32 includes a first bending spring piece 321 and a second bending spring piece 322 , and two spring wires 323 are formed on the first bending spring piece 321 and the second bending spring piece 322 , respectively.

[0066] The plane portion 31 includes a first plane plate and a second plane plate. Specifically, the first plane plate is provided with a first fixed end 311 on its surface; the bend 32 is connected to the first plane plate; the second plane plate is connected to the first plane plate through a connecting piece, and the second plane plate is provided with a second fixed end 312 on its surface.

[0067] The anti-shake spring 3 is arranged at the four corners of the support carrier 6. When installed, the plane portion 31 is installed on the support carrier 6. The bottom end of the bottom suspension wire 33 protrudes from the bent portion 32 and is connected to the base 10, specifically, it is installed on the metal reinforcement 12 inside the base 10.

[0068] Furthermore, the four corners of the support carrier 6 are formed with adapting parts 13 capable of accommodating the anti-shake reed 3. The adapting parts 13 are notches or grooves formed at the four corners of the support carrier 6.

[0069] The focus driving assembly includes a driving magnet 7, a focus coil 14 and an anti-shake coil 9, and the anti-shake coil 9 is fixed on a base 10. The driving magnet 7 is arranged in the support carrier 6; the focus coil 14 is sleeved on the annular surface outside the lens carrier 5; wherein, the outer wall of the lens carrier 5 is provided with a groove, and the focus coil 14 is arranged in the groove, so that the outer wall surface of the focus coil 14 is flush with the lens carrier 5.

[0070] In one implementation, the anti-shake coil 9 , the focus coil 14 , and the driving magnet 7 are disposed correspondingly.

[0071] When the camera drive device is focusing, the external electrical signal is transmitted to the anti-shake spring 3 through the metal reinforcement 12, and then transmitted from the anti-shake spring 3 to the first focus spring 4, and finally transmitted from the first focus spring 4 to the focus coil 14. After the focus coil 14 is energized, it generates a Lorentz force with the driving magnet 7, thereby driving the lens carrier 5 to move along the optical axis direction to complete the focusing. When the camera drive device is anti-shake, the external electrical signal is transmitted to the anti-shake coil 9 through the metal reinforcement 12. After the anti-shake coil 9 is energized, it generates a Lorentz force with the driving magnet 7, thereby driving the support carrier 6 and the lens carrier 5 to jointly generate a translational motion along the X and Y directions to complete the anti-shake.

[0072] The camera drive device in this embodiment uses four independent anti-shake springs 3 connected between the support carrier 6 and the metal reinforcement 12 at the bottom of the base 10, so that the overall force is uniform, and the bidirectional symmetrical spring wire 323 has stronger elasticity, making the anti-shake spring 3 less likely to break.

[0073] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-shake camera driving device, characterized in that: It comprises a protective shell (2) and a base (10), which are buckled together to form a receiving cavity; a metal reinforcement piece (12) and a closed-loop component (11) are provided at the bottom of the base (10); An optical element (1) protruding from the protective shell (2) is arranged in the accommodating cavity, as well as a carrier and a focus drive assembly that carry the optical element (1), and a reed assembly is arranged on the carrier; The reed assembly comprises an anti-shake reed (3), a first focusing reed (4), and a second focusing reed (8); The anti-shake reed (3) comprises: The plane portion (31) can be fixedly connected to the carrier; The bent portion (32) is connected to the plane portion (31) and is bent downwardly along the carrier to be fixed on the base (10); the bent portion (32) is provided with an elastic structure so that the anti-shake spring (3) can be elastically connected between the carrier and the base (10); The elastic structure comprises a spring wire (323) formed by bending and extending inwardly at the end of the bending portion (32), and the wall surfaces of the bent and extended spring wire (323) do not interfere with each other.

2. The anti-shake camera driving device according to claim 1, characterized in that: The bent portion (32) is connected to the plane portion (31) in an inclined or vertical manner; There are two spring wires (323), which are arranged on the left and right sides of the bending portion (32) and are symmetrically arranged.

3. The anti-shake camera driving device according to claim 2, characterized in that: The tail ends of the two spring wires (323) are connected as one body to form a combined section, and the combined section extends downward to form a suspension wire (33).

4. The anti-shake camera driving device according to claim 3, characterized in that: The bottom end of the suspension wire (33) protrudes from the bent portion (32) and is connected to the base (10).

5. The anti-shake camera driving device according to claim 2, characterized in that: The bending portion (32) comprises a first bending spring sheet (321) and a second bending spring sheet (322), and the two spring wires (323) are respectively formed on the first bending spring sheet (321) and the second bending spring sheet (322).

6. The anti-shake camera driving device according to claim 1, characterized in that: The plane portion (31) comprises: A first plane plate, a surface of which is provided with a first fixed end (311); the bent portion (32) is connected to the first plane plate; The second plane plate is connected to the first plane plate via a connecting piece, and a second fixing end (312) is provided on the surface of the second plane plate.

7. The anti-shake camera driving device according to claim 1, characterized in that: The carrier comprises a lens carrier (5) and a support carrier (6), and the lens carrier (5) is installed in the support carrier (6); The four corners of the support carrier (6) are formed with adapter portions (13) capable of accommodating the anti-shake reed (3).

8. The anti-shake camera driving device according to claim 7, characterized in that: The adapting portion (13) is a notch or groove formed at the four corners of the supporting carrier (6).

9. The anti-shake camera driving device according to claim 1, characterized in that: The focus driving component comprises: A driving magnet (7) is arranged in the supporting carrier (6); A focusing coil (14) is fixedly sleeved on the lens carrier (5); The outer wall of the lens carrier (5) is provided with a groove, and the focusing coil (14) is arranged in the groove.

10. The anti-shake camera driving device according to claim 1, characterized in that: It also includes an anti-shake coil (9), wherein the anti-shake coil (9) is fixed on the base (10).

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