CN215268437U - Suspension type image sensor fixed knot constructs and adopts module of making a video recording of this structure - Google Patents

Abstract

The utility model belongs to the technical field of camera sensors, and discloses a suspension type image sensor fixing structure and a camera module adopting the structure, which are used for realizing suspension and movability of a sensor in the camera module and comprise an OIS base and a projectile body; the elastic body is fixed in the camera module and is connected with the OIS base through at least three spring wires; the elastic body and the spring wire have elasticity. The coil and the image sensor are connected to the metal plate through the resin plug-in, so that the integrity can be improved, and the height of the whole camera module is reduced; meanwhile, the metal plate is firmly jointed with the OIS spring wire, and the conduction function between the substrate of the image sensor and the OIS coil is achieved, so that the assembly mode of the motor is optimized and improved.

Description

Suspension type image sensor fixed knot constructs and adopts module of making a video recording of this structure

Technical Field

The utility model belongs to the technical field of image equipment, concretely relates to suspension type image sensor fixed knot constructs and adopts the module of making a video recording of this structure.

Background

The VCM motor is a device that converts electric energy into mechanical energy and realizes linear and limited swing angle motion. The device generates regular movement by utilizing the interaction between the magnetic field from the permanent magnetic steel and the magnetic poles in the magnetic field generated by the conductor of the electrified coil. Because the voice coil motor is a non-commutation type power device, the positioning accuracy is completely dependent on the feedback and control system, and is independent of the voice coil motor. The VCM motor changes the smart phone camera from fixed focus to automatic focusing, and simultaneously endows a small or miniature camera with an anti-shake function, and the VCM motor has the greatest effect that the camera can automatically focus and also can provide motion compensation.

The VCM of the mobile phone camera needs DriverIC to complete focusing and anti-shake, the current VCM controls the magnitude of VCM power supply current through the DriverIC to determine the moving distance of a lens carried by the VCM, and therefore the VCM is adjusted to a proper position to shoot a clear image. The VCM motor is actually moved by the principle that an energized coil is subjected to a force in a magnetic field, and precise control needs to be performed by some external component, wherein the magnitude and time of the current is controlled and outputted by a DriveIC, thereby controlling the position to which the voice coil driver needs to reach. In the mobile phone, all control information of the drive IC is given by the SoC, and control logic and specific parameters are acquired by repeated teaching in the design and manufacturing process of an engineer.

The VCM motor is similar in control and action principle in focusing and anti-shake work, but because the motion direction of anti-shake is more, then need complicated structural design just can satisfy certain anti-shake demand. The anti-shake structure in current miniature camera all is to carrying out motion compensation to the lens, nevertheless because lens module itself volume and weight are great, need certain input power and motion space just can realize anti-shake effect in motion control, then increased whole camera module's volume undoubtedly, and in the terminal equipment that has harsh space installation restriction, then remove OIS mechanism for the adaptation installation demand to influence image quality.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a suspension type image sensor fixed knot constructs and adopts the module of making a video recording of this structure, can realize the motion compensation to the sensor through the subassembly of suspension type to the whole volume of making a video recording the module of effectual reduction.

The utility model discloses the technical scheme who adopts does:

in a first aspect, the present invention discloses a suspension type image sensor fixing structure, which is used for arranging in a camera module to realize suspension and movement of a sensor, and comprises an OIS base and a projectile body;

the elastic body is fixed in the camera module and is connected with the OIS base through at least three spring wires;

the elastic body and the spring wire have elasticity.

The utility model relates to an use fixed establishment in camera (especially miniature camera module), constitute anti-shake module jointly with other magnetic substance subassemblies. The anti-shake is that a lens or a sensor is specially connected, so that the lens or the sensor keeps a certain degree of freedom in a camera, and can directionally move in a certain range under the pushing of other action bodies, so that the shaking of the external fixing equipment of the camera can be compensated for actions, and the sensor can receive external light rays in a relatively static state.

To realize the active optical anti-shake function, an action component (generally, an electromagnetic actuation combination of a magnet and an electric coil) needs to be arranged in the camera to push the lens and/or the sensor to perform active action, and meanwhile, the lens and/or the sensor needs to be kept to have a certain range of freedom of movement in the camera module. The OIS optical anti-shake technology in the prior art is mainly directed to lens anti-shake, and has mature technical application and low cost for lens anti-shake (especially for miniature camera modules) due to the same actuating principle as the existing AF auto-focusing technology.

However, in order to reduce the size of many electronic devices (especially handheld terminal devices such as mobile phones), on the premise of ensuring that the size of important components such as batteries is not changed, the size of other internal components needs to be controlled, wherein the size of the camera is controlled as a key. The imaging quality of optical camera module is relevant with multiple factors such as sensor size, camera lens module, anti-shake technique and integrated algorithm, in case reduce the volume of whole camera module, will certainly lead to the fact the influence to the imaging quality. In order to further reduce the influence on the imaging quality, the optical anti-shake component which occupies a large space originally needs to be structurally adjusted, so that a sensor anti-shake technology is provided.

The sensor anti-shake principle is similar to the lens anti-shake principle, and since the entering light firstly passes through the lens module and then enters the sensor, the motion compensation can be realized by adjusting the motion direction of the lens or the motion direction of the sensor, but since the sensor has a smaller size, the sensor anti-shake mechanism is easier to optimize than the lens anti-shake mechanism, and since the weight is also obviously smaller than the lens module, the motion control is relatively simple.

The utility model provides a OIS base is then the part that is used for the bearing sensor, and body itself and camera fixed connection set up many spring wires between body and OIS base and are connected for the OIS base can carry out the upset or the translation of certain range in the space. The turnover is a spatial turnover, and the whole OIS base can be regarded as a plane which can rotate around a single axis when being pushed by an external electromagnetic assembly, and the axis is a virtual axis, namely a connecting line of the two OIS bases and a spring wire. Meanwhile, translation refers to movement within a certain range in the plane where the OIS base is located, comprehensive anti-shaking is performed through the two movement modes, and the anti-shaking effect of the whole sensor can be improved.

It is worth mentioning that the elastic bodies and the spring wires are elastic and can provide restoring force for the OIS base, and due to the two-section structure design, the assembly sequence in the whole camera module can be adjusted by adjusting the length and the direction of the spring wires, adjusting the structure of the elastic bodies and fixing the positions, and due to the fact that the elastic bodies and the spring wires have more adjusting points, other components can be arranged more conveniently, and the elastic bodies and the spring wires have higher adaptability.

In combination with the first aspect, the present invention provides the first embodiment of the first aspect, wherein the projectile body is an annular sheet structure and is provided with a plurality of strings thereon, and the strings are connected to the spring wire.

Wherein, the main structure of the projectile body is an annular piece, mainly a plane or space sheet structure. The plane lamellar body structure has little vertical space occupancy, and its elastic direction mainly is the plane direction at this projectile body major structure place of perpendicular to, and the space lamellar body then includes a plurality of spaces that an organic whole or split type mosaic structure had and bends the characteristics, not only can provide fore-and-aft elastic restoring force, also can provide simultaneously with regard to the elastic restoring force on the transverse direction.

The projectile provides the primary structural support with a small amount of deformation due to the nature of its toroidal structure. And a plurality of string wire structures arranged on the circumferential direction of the outer edge or the inner edge have larger elastic deformation quantity, so that more displacement and main elastic restoring force can be given to the spring wire and the OIS base.

It should be noted that the longitudinal and transverse directions mentioned above are referred to as the incident direction of light, i.e. the longitudinal or axial direction, and all planes perpendicular to the light path are the transverse or horizontal directions.

Combine the first embodiment of first aspect, the utility model provides a second kind of embodiment of first aspect, the string silk is the integrated into one piece structure unanimous with projectile thickness, and the string silk width is less than the projectile body, and the string silk has a plurality of corners to be equipped with the expansion end of being connected with the spring line at the middle part.

The string wire and the projectile body are of an integrally formed structure, are formed by laser cutting on the same metal plate, have higher structural stability and are lower in manufacturing and assembling cost. In order to have better deformation quantity and toughness, the elastic deformation effect can be better realized by reducing the width and increasing the length of the elastic deformation plate and by a plurality of bending designs. When the spring wire moves up and down, the expansion end of the string wire can move up and down in the same amplitude, and the expansion end and the main structure of the projectile body can be twisted relatively, so that the string wire on one side or two sides is bent and elongated, and the string wire is easier to deform due to the fact that the string wire has smaller width and larger length, and meanwhile, the deformation can be uniformly dispersed, and good stability can be guaranteed when large displacement occurs.

Combine the second kind embodiment of first aspect, the utility model provides a third kind embodiment of first aspect, the end that expands is the annular shape, and the string silk uses the end that expands to be symmetry center symmetry, and both sides all include have a plurality of buckles and the width unchangeable elasticity portion and with the body connection of bullet and the connecting portion of width grow gradually.

The elastic part is mainly a deformation main body, and the connecting part has a larger width, and the width is gradually changed, so that the problem of stress concentration caused by sudden change of the width can be avoided. Wherein the so-called gradual increase is dependent on the direction from the enlarged end to the body structure of the projectile. In order to improve stability to make the string silk can provide more stable answer effect when producing deformation, then set up it into symmetrical structure, its deformation characteristic easily masters, the later stage of being convenient for is to the debugging of its anti-shake function.

With reference to the second embodiment of the first aspect, the present invention provides a fourth embodiment of the first aspect, wherein the spring wire is perpendicular to the plane of the projectile body and the plane of the OIS base.

In combination with the first aspect, the present invention provides a fifth implementation manner of the first aspect, wherein the string wires are spatial bending structures.

With reference to the first aspect and the first to fifth embodiments thereof, the present invention provides a sixth embodiment of the first aspect, wherein the OIS chassis includes an injection molded main body structure and a sensor supported on the main body structure; the metal inner body is arranged in the main body structure and provided with an extending end extending out of the main body structure, and the extending end is connected with the string wires through spring wires.

In combination with the sixth implementation manner of the first aspect, the present invention provides a seventh implementation manner of the first aspect, wherein the metal inner body is a split structure, and includes a plurality of metal strips, and a single metal strip at least includes an outward protruding end and a plurality of inward protruding conductive ends, and is connected to the circuit on the OIS base through the conductive ends.

In a second aspect, the present invention further provides a camera module, which includes a housing and a bottom cover that are fastened to each other, and further includes an AF module and a sensor that are disposed in the housing; the suspension type image sensor fixing structure in the above embodiment is arranged in the shell, and the sensor is arranged on the OIS base.

In combination with the second aspect, the present invention provides the first embodiment of the second aspect, wherein the OIS chassis is connected to an external circuit and sequentially connected to the metal inner body, the spring wire and the projectile body to energize the AF module.

The utility model has the advantages that:

the utility model discloses a projectile body, the string silk, the kinematic connection structural design of spring wire and OIS base, can provide better motion range and motion stability for the sensor, use resin plug-in components to connect OIS coil and image sensor on the metal endosome simultaneously, help improving assembly process, the joint that metal endosome and OIS's spring wire are firm also provides better elastic support for the OIS base simultaneously, the metal endosome still has the base plate of sensor, conduction between the coil, reach the purpose of simplifying assembly process.

Drawings

Fig. 1 is an axial schematic view of an assembly state of the entire camera module in embodiment 2 of the present invention;

fig. 2 is a schematic side view of the entire camera module in embodiment 2 of the present invention in an assembled state;

fig. 3 is a schematic side view of the entire camera module in a split state according to embodiment 2 of the present invention;

fig. 4 is a schematic axial view of the entire camera module in a disassembled state according to embodiment 2 of the present invention;

fig. 5 is a schematic axial view of a suspended image sensor fixing structure according to embodiment 1 of the present invention;

fig. 6 is a side view schematically showing three main connecting parts of the fixing structure in an assembled state according to embodiment 1 of the present invention;

fig. 7 is an axial schematic view of the main three connecting parts of the fixing structure in the assembled state according to embodiment 1 of the present invention.

In the figure: 1-outer shell, 2-AF module, 3-FPC soft board, 4-OIS base, 5-protective cover, 6-bottom cover, 7-elastic body, 7.1-string wire, 8-sensor, 9-spring wire, 10-metal inner body and 10.1-extending end.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example 1:

the embodiment provides a fixing structure of a suspended image sensor 8, which is arranged in a camera module and is matched with a shell of the camera module to realize movable connection of the sensor 8.

Specifically, as shown in fig. 5-7, which illustrate a specific assembly connection manner of the fixing structure, it can be seen that the fixing structure includes an OIS base 4 as a main bearing body, wherein the OIS base 4 is a square plate structure, and four corners of the OIS base are subjected to corner cutting.

The upper part of the OIS chassis 4 has a square sink in which the sensor 8 is located. The sensor 8 is a photosensitive element of the camera module, specifically a cmos photosensitive device in this embodiment, and is connected to an external control circuit through a flat cable of the FPC flexible board 3.

The upper part of the OIS base 4 is provided with a projectile body 7 structure, the projectile body 7 in the embodiment is a metal annular sheet body structure with a certain width, the outer edge dimension of the projectile body is the same as that of the OIS base 4, and the projectile body is provided with corner cutting processing. The four corners of the projectile body 7 are provided with a string wire 7.1 structure, the middle of the string wire 7.1 structure is provided with an annular expansion end, the expansion end is connected with a vertically arranged spring wire 9, and the lower end part of the spring wire 9 is connected with the end part of the OIS base 4 extending mechanism, so that a fixing structure formed by the projectile body 7, the string wire 7.1, the spring wire 9 and the OIS base 4 is formed.

Wherein, the body 7 is connected with the casing of the module of making a video recording, and the mode through direct fixed connection or spacing joint remains stable at the casing, owing to adopt foil structural design, makes it have the bending deformation ability on longitudinal direction, can provide certain elastic restoring force, but mainly provides for OIS base 4 and suspends fixed effect in midair. The four-corner string wires 7.1 are of a plane structure integrally formed with the projectile body 7 and comprise expansion ends, elastic parts and connecting parts.

As shown in fig. 5 and 7, the string wire 7.1 has a symmetrical structure with an enlarged part as the center, and two sides are sequentially provided with an elastic part and a connecting part, wherein the elastic part is a single metal wire with the same width and a plurality of bending structures, and the connecting part is a metal wire with gradually increased width, and is mainly used for being connected with the projectile body 7 and avoiding stress concentration through smooth transition.

Further, as can be seen in the figure, the elastic part of the string wire 7.1 has three bending areas, and the middle spring wire 9 penetrates into the round hole of the expanded end, and the expanded end and the spring wire 9 are connected by means of spot gluing or spot welding. At each of the four corner cuts of the OIS chassis 4, an outwardly protruding metal structure is provided, which is an extended end 10.1 of a metal inner body 10 in the OIS chassis 4. A round hole is arranged on the extension end 10.1, and the spring wire 9 also penetrates through the round hole and is connected through glue dispensing or spot welding.

The spring wires 9 have some elasticity, but the OIS chassis 4 action provides elastic restoring force primarily through elongation and contraction of the string 7.1. Because four corners of the OIS base 4 are connected with the spring wires 9, and the electromagnetic action mechanism is arranged at the bottom of the OIS base 4, the OIS base 4 can perform plane displacement and overturning and tilting actions. The plane displacement is moved along the plane where the plane displacement is located, and at the moment, the four string wires 7.1 are pulled to be elongated or contracted simultaneously. The turning and tilting action is that the wire can be turned along the connecting line of the connecting points of the two spring wires 9, at the moment, two groups of string wires 7.1 are pulled down, and the other two groups are pulled up.

Further, as shown in fig. 7, a metal inner body 10 structure wrapped by an injection molding material is shown. The metal inner body 10 in this embodiment has four identical parts, each of which comprises a right angle corner piece with two connectors on the concave side and an extension on the outside of the corner. The middle of the OIS base 4 and the lower portion of the sensor 8 are also provided with a metal plate structure, and the metal plate is wrapped by the injection molding part on the outer side, so that a better supporting and fixing effect can be provided for the sensor 8. The metal inner body 10 has the function of connecting the base plate of the sensor 8 with the coils on the lower part of the OIS chassis 4 for the transfer of electrical energy, and because of the split design, individual control of the electrical transfer can be performed for each coil.

Example 2:

the present embodiment discloses a camera module structure, which has the fixing structure of the suspended image sensor 8 in embodiment 1.

Specifically, the camera module is designed as an anti-shake structure of the sensor 8, and as shown in fig. 1 to 4, the split structure diagram of fig. 4 is not sequentially split according to the covering order of the structure, so it should be noted that the whole camera module is composed of the housing 1 and the bottom cover 6, and the bottom cover 6 is a single plate structure and is fastened on the bottom opening of the housing 1.

The main functional components in the housing 1 include the AF module 2, the sensor 8, and the above-described suspended fixing structure, the sensor 8 being disposed on the OIS chassis 4, and the sensor 8 being covered with the protective cover 5. The AF module 2 is arranged on the shell 1 and is provided with a single FPC flat cable connected with an external control circuit and a power supply circuit. The AF module 2 has an automatic zoom mechanism therein, and can autonomously complete the lens axis reciprocating motion in the housing 1. And the elastomer 7 of the OIS is arranged at the upper part of the shell 1, and the lower part of the elastomer 7 is also provided with a gasket connected with the shell 1 for supporting and fixing.

In this embodiment, the suspension mechanism includes an OIS chassis 4 connected to a projectile 7, which is the same as in embodiment 1 above, and a metal plate, a metal inner body 10, a sensor 8, and a PCB with a coil at the bottom are connected to form an integrated structure by a resin injection molding process. And an FPC soft board 3 structure is arranged around the OIS base 4, and the FPC soft board 3 is connected with one side end face of the OIS base 4 provided with a sensor 8 and used for power supply and control signal input.

And a plurality of OIS magnets are arranged on the bottom cover 6, and correspond to the coils arranged on the OIS base 4, and specific currents are input into the coils through an external control circuit, so that specific magnetic fields are generated to cause the OIS base 4 to perform directional movement on the magnets, and therefore motion compensation is formed.

The present invention is not limited to the above-mentioned alternative embodiments, and various other products can be obtained by anyone under the teaching of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the following claims, and which can be used to interpret the claims.

Claims (10)

1. The utility model provides a suspension type image sensor fixed knot constructs for it is movable that the setting realizes sensor suspension in the module of making a video recording, its characterized in that: comprises an OIS base (4) and a projectile body (7);

the projectile body (7) is fixed in the camera module and is connected with the OIS base (4) through at least three spring wires (9);

the bullet body (7) and the spring wire (9) both have elasticity.

2. A suspended image sensor fixing structure as claimed in claim 1, wherein: the projectile body (7) is of an annular sheet body structure, a plurality of string wires (7.1) are arranged on the projectile body, and the string wires (7.1) are connected with spring wires (9).

3. A suspended image sensor fixing structure as claimed in claim 2, wherein: the string wire (7.1) is of an integrally formed structure with the thickness of the projectile body (7) consistent, the width of the string wire (7.1) is smaller than that of the projectile body (7), the string wire (7.1) is provided with a plurality of corners, and an expansion end connected with the spring wire (9) is arranged in the middle of the string wire.

4. A suspended image sensor fixing structure as claimed in claim 3, wherein: the end of expanding is the annular shape, and string silk (7.1) use the end of expanding to set up as symmetry center symmetry, and both sides all include have a plurality of buckles and the unchangeable elastic component of width and be connected and the connecting portion of width grow gradually with projectile (7).

5. A suspended image sensor fixing structure as claimed in claim 3, wherein: the spring wire (9) is perpendicular to the planes of the projectile body (7) and the OIS base (4).

6. A suspended image sensor fixing structure as claimed in claim 2, wherein: the string wires (7.1) are all of a space bending structure.

7. A suspended image sensor fixing structure as claimed in any one of claims 1 to 6, wherein: the OIS base (4) comprises an injection molded main body structure and a sensor (8) supported on the main body structure; the main structure is internally provided with a metal inner body (10), the metal inner body (10) is provided with an extending end (10.1) extending out of the main structure, and the extending end (10.1) is connected with the string wire (7.1) through a spring wire (9).

8. A suspended image sensor fixing structure as claimed in claim 7, wherein: the metal inner body (10) is of a split structure and comprises a plurality of metal strips, each metal strip at least comprises an outward protruding end (10.1) and a plurality of inward protruding conductive ends, and the metal strips are connected with a circuit on the OIS base (4) through the conductive ends.

9. The utility model provides a module of making a video recording which characterized in that: the device comprises a shell (1) and a bottom cover (6) which are mutually buckled, and also comprises an AF module (2) and a sensor (8) which are arranged in the shell (1); a suspended image sensor fixing structure as claimed in claim 7 is provided in the housing (1), and the sensor (8) is provided on the OIS chassis (4).

10. The camera module of claim 9, wherein: the OIS base (4) is connected to an external circuit and sequentially passes through the metal inner body (10), the spring wire (9) and the elastic body (7) to electrify the AF module (2).

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