Anti-shake camera shooting driving device
Technical Field
The utility model relates to the technical field of image pickup devices, in particular to an anti-shake image pickup driving device.
Background
In the existing hand-held optical products in the market, such as digital cameras, video cameras, mobile phones and other optical systems, the optical lens group and the camera driving device are matched and combined. In the shooting process, in order to adapt to shooting of various scenes, external force is easily applied in the focusing or shooting process to generate shaking, for example, shaking of the device is caused by hand-held, vehicle running room and external environment factors, and further the problems of incapability of clear imaging or blurred images and the like are caused.
Common OIS anti-shake structures include reed bending, suspension, ball, reed splicing, and the like. Each anti-shake structure has drawbacks, such as:
The reed bending type is characterized in that the Base is easy to deform and limit in size NG due to overhigh upright posts at four corners of the Base, and the direct part is of a suspension type structure, so that the Z-direction K value of the reed is insufficient, and the performance yield is difficult to improve.
The OIS direction of the suspension wire is recovered and supported by the suspension wire, the suspension wire is of a single structure, the stress adjustment capability is limited, no good scheme is adopted after the reliability is broken, the bottleneck exists for the subsequent requirement of large stroke and large weight, meanwhile, the suspension wire motor needs to be assembled by adding 4 groups of suspension wires on an upper reed and a lower reed, and the raw material cost is high.
The reed splicing process is complex, the manufacturing process difficulty is high, the reed splicing adopts a welding mode, the open circuit risk is high, a plurality of groups of elastic wires are needed for assembly, and the raw material cost is high.
The problem of abnormal sound of the ball type complete machine is difficult to treat, grease cannot be cleaned due to the grease, the cleanliness requirement in the manufacturing process is strict, POG risk is high, and a large-weight rotor is easy to press an injection molding part out of a pit, so that movement is delayed.
Therefore, there is a need for an anti-shake imaging drive device that is high in strength, low in cost, and easy to manufacture.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model provides an anti-shake shooting driving device, which solves the problems of complex process, high strength and high cost of the existing anti-shake structure.
The anti-shake shooting driving device comprises a protective shell and a base, wherein the protective shell and the base are mutually buckled to form a containing cavity;
The accommodating cavity is internally provided with an optical element protruding out of the protective shell, a carrier for bearing the optical element and a focusing driving assembly, and the carrier is provided with a reed assembly;
The reed assembly comprises an anti-shake reed, a first focusing reed and a second focusing reed;
The anti-shake reed includes:
the plane part can be fixedly connected to the carrier;
the bending part is connected to the plane part, and is bent downwards along the carrier to extend and be fixed on the base;
The elastic structure comprises a spring wire which is formed by bending and extending inwards at the end part of the bending part, and the wall surfaces of the spring wire which are bent and extending do not interfere with each other.
Preferably, the bending part is connected to the plane part in an inclined or vertical way;
The spring wires are two and are respectively arranged at the left side and the right side of the bending part and symmetrically arranged.
Preferably, the tail ends of the two spring wires are connected into a whole to form a combined section, and the combined section extends downwards to form a suspension wire.
Preferably, the bottom end of the suspension wire protrudes from the bending part and is connected to the base.
Preferably, the bending part comprises a first bending elastic piece and a second bending elastic piece, and the two spring wires are respectively formed on the first bending elastic piece and the second bending elastic piece.
Preferably, the fixing part includes:
The surface of the first plane plate is provided with a first fixed end, and the bending part is connected to the first plane plate;
The second panel is connected with the first panel through a connecting sheet, and the surface of the second panel is provided with a second fixed end.
Preferably, the carrier comprises a lens carrier and a support carrier, and the lens carrier is arranged in the support carrier;
Four corners of the support carrier are provided with adapting parts capable of accommodating the anti-shake reed.
Preferably, the adapting part is a notch or a groove formed at four corners of the support carrier.
Preferably, the focus driving assembly includes:
a driving magnet disposed in the support carrier;
the focusing coil is sleeved and fixed on the lens carrier;
the lens carrier is characterized in that a groove is formed in the outer side wall of the lens carrier, and the focusing coil is arranged in the groove.
Preferably, the anti-shake coil is further included, and the anti-shake coil is fixed on the base.
Advantageous effects
Compared with the prior art, the anti-shake camera shooting driving device provided by the utility model has the following specific improvements and advantages:
The anti-shake reed is independently arranged at four corners of the support carrier, bosses at four corners of the base in the prior art are omitted, the deformation of the base is reduced, the dimensional control precision is improved, meanwhile, the anti-shake reed is elastically supported between the carrier and the base up and down, the Z-direction K value of the reed is larger, compared with the original reed, the bending structural performance yield is easier to control, space is saved after the base stand column is omitted, and the anti-shake reed can be used for supplementing the strength of the support and increasing the length of the coil so as to enlarge the electromagnetic force.
The anti-shake reed has the advantages of improving reliability, reducing fracture risk, reducing raw material cost, along with simpler manufacturing process, higher efficiency and lower manufacturing process cost due to the reduction of the suspension wire structure.
Drawings
FIG. 1 is a schematic diagram of an explosive structure according to the present utility model;
FIG. 2 is a schematic view of a base structure of the present utility model;
FIG. 3 is a schematic view of a focusing electrical connection according to the present utility model;
FIG. 4 is a schematic diagram showing a connection structure between a first focusing reed and a carrier according to the present utility model;
FIG. 5 is a schematic diagram of a first focusing reed and a second focusing reed according to the present utility model;
FIG. 6 is a schematic view of the installation position of the focusing coil according to the present utility model;
FIG. 7 is a schematic diagram showing the mounting position of the anti-shake reed according to the present utility model;
FIG. 8 is a schematic diagram of an anti-shake reed according to the present utility model;
FIG. 9 is a schematic diagram of an anti-shake coil according to the present utility model;
FIG. 10 is a schematic diagram of a driving magnet structure according to the present utility model;
FIG. 11 is a schematic diagram of the assembled whole structure of the present utility model.
Reference numerals illustrate:
1. the optical element comprises an optical element, a protective shell, 3, an anti-shake reed, 31, a plane part, 311, a first fixed end, 312, a second fixed end, 32, a bending part, 321, a first bending elastic piece, 322, a second bending elastic piece, 323, a spring wire, 33, a suspension wire, 4, a first focusing reed, 5, a lens carrier, 6, a supporting carrier, 7, a driving magnet, 8, a second focusing reed, 9, an anti-shake coil, 10, a base, 11, a closed loop component, 12, a metal reinforcing piece, 13, an adapting part, 14 and a focusing coil.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. Various modifications can be made to the embodiments as long as the effects of the present utility model can be exerted.
The components in the present case are sequentially connected by a person skilled in the art, and specific connection and operation sequence should be referred to the following working principle, and the detailed connection means thereof are known in the art, and the following working principle and process are mainly described.
The anti-shake image pickup drive apparatus of the present embodiment will be described with reference to fig. 1 to 11.
Including a protective shell 2 and a base 10. The protective shell 2 and the base 10 are mutually buckled to form a containing cavity;
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 accuracy of dimension control. The Z-direction K value of the anti-shake reed 3 is larger, compared with the prior art, the performance yield is easier to control, the space is saved after the base upright post is canceled, and the anti-shake reed can be used for supplementing the support strength and increasing the coil length so as to enlarge the electromagnetic force.
The bottom of the base 10 is provided with a metal stiffener 12 and a closed loop assembly 11. The closed loop assembly 11 includes an anti-shake displacement sensor and a focus displacement sensor for sensing the movement of the driving magnet 7.
The accommodating cavity is internally provided with an optical element 1 protruding out of the protective shell 2, a carrier for carrying the optical element 1 and a focusing driving assembly, and the carrier is provided with a reed assembly;
In one embodiment, the carrier comprises a lens carrier 5 and a support carrier 6, the lens carrier 5 being mounted within the support carrier 6 and suspended by a reed assembly.
The optical element 1 is mounted on a lens carrier 5. And the protective shell 2 is provided with a through hole, and the lens end of the optical element 1 penetrates through the through hole.
The reed assembly comprises an anti-shake reed 3, a first focusing reed 4 and a second focusing reed 8, wherein when in installation, the first focusing reed 4 is arranged on the top of the carrier and is respectively fixed with the lens carrier 5 and the supporting carrier 6. The second focusing reed 8 is disposed at the bottom of the carrier and is fixed to the lens carrier 5 and the support carrier 6, respectively.
The anti-shake reed 3 includes a flat surface portion 31 and a bent portion 32. The flat portion 31 and the bent portion 32 may be integrally bent or may be welded separately.
In practice, the planar portion 31 can be fixedly connected to the carrier. The bending part 32 is connected to the plane part 31 and is fixed on the base 10 along the downward bending extension of the carrier, and the bending part 32 is provided with an elastic structure so that the anti-shake reed 3 can be elastically connected between the carrier and the base 10;
The elastic structure includes a wire spring 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 wire spring 323 do not interfere with each other, that is, the bent wire spring 323 does not contact with each other.
The bending part 32 is connected to the fixing part 31 in an inclined or vertical manner, and the number of the spring wires 323 is two, and the spring wires 323 are respectively arranged on the left side and the right side of the bending part 32 and symmetrically arranged.
In this embodiment, the bending type independent anti-shake reed 3 with the bending portion 32 replaces the suspension wire structure in the prior art, so that the stress can be reduced, the reliability fracture risk can be reduced, the raw material cost can be reduced, the manufacturing process is simpler, the efficiency is higher, and the manufacturing process cost is lower.
The tail ends of the two spring wires 323 are connected to form a combined section, and the combined section extends downwards to form a suspension wire 33.
The bending portion 32 includes a first bending elastic piece 321 and a second bending elastic piece 322, and two spring wires 323 are respectively formed on the first bending elastic piece 321 and the second bending elastic piece 322.
The planar portion 31 includes a first planar plate and a second planar plate. Specifically, a first fixed end 311 is arranged on the surface of the first plane plate, the bending part 32 is connected to the first plane plate, the second plane plate is connected with the first plane plate through a connecting sheet, and a second fixed end 312 is arranged on the surface of the second plane plate.
The anti-shake reed 3 is provided at four corners of the support carrier 6, and the flat surface portion 31 is mounted on the support carrier 6 when mounted. The bottom end of the bottom suspension wire 33 protrudes from the bending portion 32 and is connected to the base 10, specifically, the metal reinforcement 12 installed inside the base 10.
Further, the four corners of the support carrier 6 are formed with fitting portions 13 capable of accommodating the anti-shake reed 3. The fitting portions 13 are notches or grooves formed at four corners of the support carrier 6.
The focusing driving assembly comprises a driving magnet 7, a focusing coil 14 and an anti-shake coil 9, and the anti-shake coil 9 is fixed on the base 10. The driving magnet 7 is arranged in the supporting carrier 6, the focusing coil 14 is sleeved and fixed on the annular surface outside the lens carrier 5, wherein a groove is formed in the outer side wall of the lens carrier 5, and the focusing coil 14 is arranged in the groove, so that the outer wall surface of the focusing coil 14 is flush with the lens carrier 5.
In one embodiment, the anti-shake coil 9, the focusing coil 14, and the driving magnet 7 are provided correspondingly.
When the camera shooting driving device focuses, an external electric signal is transmitted to the anti-shake reed 3 through the metal reinforcing piece 12, then transmitted to the first focusing reed 4 through the anti-shake reed 3, finally transmitted to the focusing coil 14 through the first focusing reed 4, and the focusing coil 14 generates Lorentz force with the driving magnet 7 after being electrified, so that the lens carrier 5 is driven to move along the optical axis direction, and focusing is completed. When the camera shooting driving device is anti-shake, an external electric signal is transmitted to the anti-shake coil 9 through the metal reinforcing piece 12, and Lorentz force is generated between the anti-shake coil 9 and the driving magnet 7 after the anti-shake coil 9 is electrified, so that the supporting carrier 6 and the lens carrier 5 are driven to jointly generate translational motion along the direction X, Y, and anti-shake is completed.
In the photographing driving device in this embodiment, the independent 4 anti-shake reeds 3 are connected between the support carrier 6 and the metal reinforcement 12 at the bottom of the base 10, so that the overall stress is uniform, and the spring wires 323 with bilateral symmetry have stronger elastic capability, so that the anti-shake reeds 3 are not easy to break.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.