CN217721311U - Sensor anti-shake device and camera device - Google Patents

Abstract

The utility model discloses a sensor anti-shake device and a camera device, wherein the sensor anti-shake device comprises a base, a suspension plate and a plurality of SMA wires for driving the suspension to move; the suspension plate comprises a frame plate and a sensor mounting plate arranged in the frame plate frame, and the sensor mounting plate is electrically connected with the frame plate through a plurality of elastic bodies; the sensor mounting plate is fixedly connected with the suspension, and the frame plate is fixedly connected with the base. The utility model discloses a sensor anti-shake device adopts the sensor to remove and carries out the anti-shake, has reduced the module height, and then more does benefit to the miniaturization of follow-up camera module structure.

Description

Sensor anti-shake device and camera device

Technical Field

The utility model relates to a sensor anti-shake device to and applied this sensor anti-shake device's camera device.

Background

With the increasing abundance of scenes for shooting by mobile phones and the increasing demand for anti-shake, the anti-shake shooting technology of smart phones adopts the most OIS optical anti-shake, and is a technology for correcting angles by driving a lens to move through a voice coil motor.

Therefore, a Sensor-Shift technology is proposed to overcome the above problems, which is different from a technology for preventing a lens from shaking by moving, wherein the Sensor-Shift technology realizes the shaking prevention in the directions of an X axis and a Y axis by moving an image Sensor, and the prior art mainly adopts a magnet coil to realize the shaking prevention driving of the image Sensor, so that the Sensor-Shift technology has the advantages of small thrust, easy generation of magnetic interference and high power consumption, and meanwhile, the complicated structure and more parts cause difficulty in reducing the volume of a camera module, and the additionally arranged FPC is difficult to shape after being bent, the control precision of a motor is influenced by the unstable stress of the FPC, the manufacturing process is complicated, and the assembly efficiency of the module is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sensor anti-shake device which has novel and unique structure and convenient use and can be organically matched with packaged goods; the specific technical scheme is as follows:

a sensor anti-shake device comprises a base, a suspension plate and a plurality of SMA wires for driving the suspension to move; the suspension plate comprises a frame plate and a sensor mounting plate arranged in the frame plate frame, and the sensor mounting plate is electrically connected with the frame plate through a plurality of elastic bodies; the sensor mounting plate is fixedly connected with the suspension, the frame plate is fixedly connected with the base, one end of the SMA wire is fixedly connected with the suspension, and the other end of the SMA wire is fixedly connected with the frame plate; the suspension is provided with a through hole matched with the sensor lens.

Further, the suspension is a conductor and is electrically connected to a common terminal of a drive circuit of the sensor mounting board.

Furthermore, a connecting boss is arranged between the suspension and the sensor mounting plate; the top surface of the connecting boss is fixedly connected with the bottom surface of the suspension; the bottom surface is fixedly connected with the top surface of the sensor mounting plate.

Further, the shielding case is further included.

Furthermore, a buffer pad is arranged on the upper end face and/or the lower end face of the suspension, and the buffer pad on the upper end face is fixedly connected with the shielding cover or the suspension; the cushion pad on the lower end face is fixedly connected with the suspension plate or the suspension.

Further, the elastic body is a spring wire or a spring leaf.

Further, the elastic body is a reed, and an included angle between the width direction of the reed and the top plane of the frame plate is larger than 80 degrees.

Further, the width direction of the reed is perpendicular to the top plane of the frame plate.

Further, the bottom surface of sensor mounting panel is fixed and is provided with the backup pad, be provided with the support on the base, the backup pad with support sliding connection.

The utility model also discloses a camera device adopts above-mentioned anti-shake device.

The utility model discloses a sensor anti-shake device adopts the sensor to remove and carries out the anti-shake, has reduced the module height, and then more does benefit to the miniaturization of follow-up camera module structure.

Drawings

Fig. 1 is a schematic structural diagram of the sensor anti-shake device of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 with the shield removed;

FIG. 3 is an exploded view of FIG. 1;

FIG. 4 is a schematic structural view of a pre-tensioned configuration;

FIG. 5 is a schematic diagram of the SMA wire drive principle;

FIG. 6 is a schematic perspective view of a conductive suspension plate structure;

FIG. 7 is an exploded view of the arrangement of FIG. 8;

fig. 8 is an exploded view of fig. 7.

In the figure: 1. a shield case; 2. a suspension; 3. SMA wire; 4. connecting the bosses; 41. a bonding pad; 5. A suspension plate; 51. a lower jaw; 52. connecting blocks; 53. a reed; 54. a sensor mounting plate; 55. a frame plate; 551. a transition pad; 6. a base; 61. a support; 62. and a support plate.

Detailed Description

The present invention will be more fully described with reference to the following examples. The present invention may be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein.

Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an orientation of upper and lower. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1, 2 and 3, the sensor anti-shake apparatus in this embodiment includes a base 6, a suspension 2, a suspension plate 5 and a plurality of SMA wires 3 for driving the suspension to move. The suspension plate 5 includes a frame plate 55 and a sensor mounting plate 54. Wherein the sensor mounting plate 54 is disposed within the frame plate 55; the sensor mounting plate 54 is electrically connected to the frame plate 55 through a plurality of elastic bodies. The length of the SMA wire 3 is changed along with the magnitude of the passing current, and the SMA wire is matched with a correspondingly arranged elastomer to drive the suspension 2 to move; the sensor mounting plate 54 is then moved by the suspension 2 in the direction of extension of the suspension plate 5 (the XY plane defined by the X and Y axes). Generally, four SMA wires 3 are provided; the corresponding elastic bodies are four groups; or a multiple of four. If the SMA wires 3 are adjusted to 3 or more; the number of elastic bodies should be adjusted accordingly. The image sensor is mounted on the sensor mounting plate 54, and the signal line and the power line of the sensor mounting plate 54 and the common end of the drive current of the SMA wire 3 are connected to the frame plate 55 through respective conductive elastic bodies, to obtain a power supply and a transmission signal. The elastic body can be a spring wire or a reed.

When the spring plate is selected as the elastic body, the included angle between the width direction of the spring plate 53 and the top plane of the frame plate 55 is greater than 80 degrees. Or may be perpendicular to the top plane of the frame plate 55. Thus, the spring plate 53 is relatively rigid in the direction (Z-axis) perpendicular to the top plane of the frame plate 55, which is advantageous in reducing the shaking interference of the sensor mounting plate 54 in this direction.

The sensor mounting plate 54 is fixedly connected with the suspension 2, the frame plate 55 is fixedly connected with the base 6, one end of the SMA wire 3 is fixedly connected with the suspension 2, and the other end of the SMA wire is fixedly connected with the frame plate 55; the suspension 2 is provided with a through hole adapted to the sensor lens. And the SMA wire 3 is adopted for driving, so that the height of the shaking structure is favorably reduced relative to electromagnetic driving, and the product miniaturization is favorably realized.

The suspension 2 is a conductor, and is electrically connected to the sensor mounting plate 54 by soldering via a pad, and is electrically connected to a common terminal of a drive circuit of the frame plate 55 via a reed 53. The suspension 2 may be made of a conductive metal or other non-conductive material, and a conductive film is provided on the surface thereof to be a conductor.

The suspension 2 consists of a middle connecting frame and a support arm arranged diagonally, and the tail end of the support arm is provided with a clamping jaw; the claw is fixedly connected with one end of the SMA wire 3. The devices protruding from the surface of the sensor mounting plate 54 can be arranged in the middle, and the connecting frame is sleeved on the sensor mounting plate 54; the suspension 2 is made more rigid in the horizontal direction.

The sensor anti-shake device in this embodiment should also be provided with a shield case 1, and electromagnetic interference inside and outside the anti-shake device is reduced by using the shield case 1.

A buffer pad is arranged between the shielding case 1 and the suspension 2, and the buffer pad can be fixedly connected with the shielding case 1; can also be fixedly connected with the suspension 2; the buffer pad can prevent that suspension 2 and shield cover 1 from colliding each other under the external force impact, improves anti-shake device's shock resistance. Similarly, a cushion pad may also be disposed between the suspension plate 5 and the suspension 2, and the cushion pad may be fixedly connected to the suspension plate 5; or may be fixedly connected with the suspension 2. The cushion pad is made of an insulating elastic material such as rubber.

As shown in fig. 5 and 6, one end of the SMA wire 3 is fixedly connected with a claw at the tail end of a support arm of the suspension 2; the other end is fixedly connected with the lower claw 51. The lower jaw 51 is fixedly connected with a frame plate 55 through a connecting block 52; the SMA wire 3 passes through the connecting block 52 parallel to the top surface of the suspension 2. The connection block 52 is soldered to a transition pad 551 on the frame plate 55, introducing a drive current into the SMA wire 3.

A connection boss 4 may also be provided between the suspension 2 and the sensor mounting plate 54; the top surface of the connecting boss 4 is fixedly connected with the bottom surface of the suspension 2; the bottom surface is fixedly connected with the top surface of the sensor mounting plate 54. The thickness of the suspension 2 can be reduced by arranging the connecting boss 4, and the weight of the product is reduced. The connection boss 4 is provided with a pad 41 for electrically connecting the sensor mounting plate 54 and the suspension 2 by soldering.

As shown in fig. 4 and 7, a support plate 62 may be fixedly provided on the bottom surface of the sensor mounting plate 54, a bracket 61 corresponding to the support plate 62 may be provided on the base 6, and the support plate 62 may be slidably coupled to the bracket 61, or a ball groove may be provided on the bracket and may be rotatably coupled to the bracket 61 by a ball. The sensor mounting plate 54 is pushed up by the bracket 61, and the elastic body of the suspension plate 5 is deformed to provide a downward pre-pressure to the sensor mounting plate 54. Therefore, the problem of attitude difference (axial movement of the Z axis) in the anti-shake moving process of the image sensor can be solved, and the driving precision is improved.

In use, power and drive signals are introduced to the frame board 55 through the FPC. The four driving current signals are respectively electrified to the four SMA wires 3 through the connecting blocks 52 and the lower claws 51 through four transition pads 551 on the frame plate 55, and the four circuits return to the output end of the driving circuit on the frame plate 55 through the suspension 2, the connecting boss 4, the sensor mounting plate 54 and the elastic body 53. The current is changed to drive the four SMA wires 3 to change the length, and the four SMA wires and the four groups of reeds 53 jointly drive the suspension 2 to move along the XY plane; thereby driving the sensor to move to eliminate the influence of jitter on image acquisition.

The power and signals of the image sensor are transmitted through four sets of springs 53 connecting the sensor mounting plate 54 and the frame plate 55.

In the anti-shake device in the embodiment, the suspension 2 is arranged above the suspension plate 1, and compared with the scheme that the suspension 2 is arranged below the suspension plate 1, the anti-shake device is beneficial to improving the effective height of the image sensor; moreover, the number of parts is reduced, the driving response speed is higher, the power consumption is lower, and the miniaturization of the module is facilitated.

By additionally arranging the supporting plate 66 on the suspension plate 5 to be matched with the support of the bracket 61, on one hand, the strength of the sensor mounting plate 54 is improved, and further, the driving precision and the electric connection stability of the sensor mounting plate 54 are improved, on the other hand, pre-pressure is provided for the suspension plate 5, the problem of poor posture (axial movement of a Z axis) in the anti-shake moving process of the image sensor can be solved, and the driving precision is improved.

The various anti-shake devices in the present embodiment can be used for cameras, notebook computers, mobile phones, cameras, video cameras, and other photographing and imaging devices.

The above examples are only for illustrating the present invention, and besides, there are many different embodiments, which can be conceived by those skilled in the art after understanding the idea of the present invention, and therefore, they are not listed one by one herein.

Claims (10)

1. A sensor anti-shake device is characterized by comprising a base, a suspension plate and a plurality of SMA wires for driving the suspension to move; the suspension plate comprises a frame plate and a sensor mounting plate arranged in the frame plate frame, and the sensor mounting plate is electrically connected with the frame plate through a plurality of elastic bodies; the sensor mounting plate is fixedly connected with the suspension, the frame plate is fixedly connected with the base, one end of the SMA wire is fixedly connected with the suspension, and the other end of the SMA wire is fixedly connected with the frame plate; the suspension is provided with a through hole adapted to the sensor lens.

2. The sensor anti-shake apparatus according to claim 1, wherein the suspension is a conductive body electrically connected to a common terminal of the drive circuit of the sensor-mounting board.

3. The sensor anti-shake apparatus according to claim 2, wherein a connection boss is provided between the suspension and the sensor mounting plate; the top surface of the connecting boss is fixedly connected with the bottom surface of the suspension; the bottom surface is fixedly connected with the top surface of the sensor mounting plate.

4. The sensor anti-shake apparatus of claim 1, further comprising a shield.

5. The sensor anti-shake apparatus according to claim 4, wherein a cushion pad is provided on an upper end face and/or a lower end face of the suspension; the buffer cushion on the upper end face is fixedly connected with the shielding cover or the suspension, and the buffer cushion on the lower end face is fixedly connected with the suspension plate or the suspension.

6. The sensor anti-shake apparatus according to claim 1, wherein the elastic body is a spring wire or a reed.

7. The sensor anti-shake apparatus according to claim 6, wherein the elastic body is a reed, and an angle between a width direction of the reed and a top plane of the frame plate is greater than 80 degrees.

8. The sensor anti-shake apparatus of claim 7, wherein the width direction of the reed is perpendicular to the top plane of the frame plate.

9. The sensor anti-shake apparatus according to claim 1, wherein a support plate is fixedly disposed on a bottom surface of the sensor mounting plate, and a bracket is disposed on the base, and the support plate is slidably or rollably connected to the bracket.

10. An image pickup apparatus characterized by employing the sensor anti-shake apparatus according to any one of claims 1 to 9.

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