CN217116193U - Camera actuator with sheet-like FPC - Google Patents

Abstract

The utility model discloses a camera actuator with sheet FPC, which comprises a supporting part, a movable part which can move relative to the supporting part, a driving part which drives the movable part to move relative to the supporting part, and FPC, the movable part is provided with a camera, the FPC comprises a flexible circuit board body, the flexible circuit board body includes a front fixed end connected to the bottom of the movable portion, a rear fixed end extended out of the bottom of the movable portion, and a connection portion connected between the front fixed end and the rear fixed end, the connecting portion includes a first arm extending in a first direction and a second arm extending in a second direction, a certain included angle is formed between the first direction and the second direction, and the conductive circuit on the FPC can convey out a detection signal output by a signal end of the camera at the front fixed end. The FPC can freely rotate in two directions, is simple in structure, can be mounted right below a camera lens, and occupies a small space.

Description

Camera actuator with sheet-like FPC

Technical Field

The utility model relates to a camera actuator field especially relates to camera actuator field uses FPC transmission signal.

Background

With the development and popularization of portable electronic devices such as mobile phones and tablet computers, the requirement for the camera function attached to the portable electronic devices is relatively increased. In order to focus and zoom the camera, a driving device needs to be disposed in a narrow space of the camera to drive the lens to move along the optical axis. The space is small, which limits the types of drive mechanisms that can be used. The camera actuator in the prior art includes a movable portion for mounting a lens, a supporting portion for supporting the movable portion, and a driving portion for driving the movable portion to move relative to the supporting portion, wherein, in order to focus and prevent the camera from shaking, the camera is required to be driven to move up and down along an optical axis direction, and also to be driven to deflect along an X axis and a Y axis perpendicular to the optical axis direction, because the lens is mounted on the movable portion, a detection signal output by a sensor on the lens is required to be output to an external circuit board through a Flexible Printed Circuit (FPC), the circuit board is fixed on an external frame, and one end of the FPC is required to rotate in different directions relative to the other end, so that the rigidity of the FPC is required to be reduced as much as possible, and referring to fig. 1, in the existing camera actuator 1, the FPC10 is provided in a multi-layer folding structure to reduce the rigidity of the FPC10, so that the FPC10 can deflect in multiple directions, and a plurality of fixing strips 11 are used for fixing the shape of the FPC10, so that the structure is complex and the occupied volume is large.

Therefore, there is a high necessity for a camera actuator that can solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a camera actuator with slice FPC, its FPC can follow two directions free rotations, and this FPC simple structure, and the mountable is in camera lens under, and occupation space is little.

In order to achieve the above object, the present invention discloses a camera actuator having a sheet-shaped FPC, including a supporting portion, a movable portion movable with respect to the supporting portion, a driving portion driving the movable portion to move with respect to the supporting portion, and an FPC, the movable portion being provided with a camera head thereon, the FPC including a flexible circuit board body including a front fixed end connected to a bottom of the movable portion, a rear fixed end extending to an outside of the bottom of the movable portion, and a connecting portion connected between the front fixed end and the rear fixed end, the connecting portion including a first arm extending in a first direction and a second arm extending in a second direction, an included angle being formed between the first direction and the second direction, a conductive line on the FPC including a transmission line, one end of the transmission line extending to the front fixed end and being electrically connected to a signal terminal of the camera head, the other end extends to the rear fixed end to transmit the signal of the signal end.

Compared with the prior art, the utility model discloses an among the camera actuator, FPC has the first arm and the second arm that are not equidirectional for when the movable part rotates/inclines for the support part, first arm and second arm can provide the crooked degree of freedom of two not equidirectionals, effectively reduce the rotational stiffness of two directions of FPC, be convenient for the movable part rotation in order to carry out anti-shake, focusing etc. to the camera lens. On the other hand, the utility model discloses a FPC simple structure, it is small, during the use, can be fixed in movable part below, do not occupy unnecessary volume, save space.

Preferably, the connecting portion is formed by connecting a plurality of connecting sections in sequence at a certain included angle, and the connecting section includes the first arm and the second arm.

Specifically, first arm with preceding stiff end links to each other, the second arm with the back stiff end links to each other, link together through one between first arm and the second arm for first arm and second arm are the chamfer arm of chamfer, simple structure, and can be with the than wide of the width setting of connecting portion department, the wiring of being convenient for can be used to the higher camera actuator of precision.

Specifically, first arm has two and is relative with a determining deviation position, two the front end of first arm respectively with preceding stiff end links to each other with back stiff end, the second arm has one and connects in two between the front end of first arm. The rotation of first direction is provided through two first arms, further reduces the rotating rigidity of first direction, and the first direction of being convenient for is rotatory, and makes and drives preceding stiff end and the back stiff end of second arm rotation and keep away from the second arm for preceding stiff end and back stiff end have bigger rotation amplitude in the second direction.

Specifically, the first arms are two and are opposite to each other at a certain distance, the second arms are two and are opposite to each other at a certain distance, the first arms and the second arms enclose an annular connecting portion with a notch, and the front fixing end and the rear fixing end are connected with the connecting portions at two ends of the notch respectively. The rotational rigidities in the first and second directions are reduced while increasing the first and second direction rotational spaces so that the rotations in the first and second directions do not interfere with each other.

Specifically, first arm has three and sets up side by side with a determining deviation, the second arm has two, one the second arm is connected between the front end of two preceding adjacent first arms, another the second arm is connected between the rear end of two back adjacent first arms, preceding stiff end and first the rear end of first arm links to each other, back fixed part and third the front end of first arm links to each other. Further increase the rotation range of first direction and second direction, under the prerequisite that keeps FPC structural stability as far as possible, reduce the rotational rigidity of first direction and second direction.

Preferably, the first arm is provided with a plurality of penetrating strip-shaped holes along the first direction, and the strip-shaped holes are arranged in parallel at a certain interval to form a plurality of connecting strips spaced by the strip-shaped holes on the first arm, so that the rigidity of the rotation in the first direction is further reduced.

Preferably, the second arm is provided with a plurality of penetrating strip-shaped holes along the second direction, and the strip-shaped holes are arranged in parallel at a certain interval to form a plurality of connecting strips spaced by the strip-shaped holes on the second arm, so that the rigidity of rotation in the first direction is further reduced.

Preferably, the first direction and the second direction are at right angles, so that the first arm and the second arm are connected in an L-shape. Of course, the angle between the first arm and the second arm is not limited to a right angle, and may be a non-right angle (obtuse angle or acute angle).

Preferably, the power supply end of the driving portion is disposed on the supporting portion, the conductive circuit on the FPC includes a power supply line, the flexible circuit board body further includes a power supply bearing portion extending from the rear fixing end to the power supply end, one end of the power supply line is formed on the power supply bearing portion and electrically connected to the power supply end, and the other end of the power supply line extends to the rear fixing end and transmits a power supply to the driving portion.

Specifically, the supporting portion includes a supporting frame surrounding the movable portion, and the power supply bearing portion surrounds the front fixing end and the connecting portion and is located at a position corresponding to the supporting frame.

More specifically, the power supply bearing part is located below the support frame.

Preferably, the supporting portion includes a supporting frame surrounding the periphery of the movable portion, a power supply circuit board surrounding the FPC is mounted at the bottom of the supporting frame, a power supply end of the driving portion is disposed on the supporting frame, one end of the power supply circuit board is electrically connected to the power supply end, and the other end of the power supply circuit board forms an interface for transmitting a power supply to supply power to the power supply end.

Drawings

Fig. 1 is a structural view of a camera actuator FPC in the prior art.

Fig. 2 is a perspective view of a camera actuator according to a first embodiment of the present invention.

Fig. 3 is an exploded view of a camera actuator according to a first embodiment of the present invention.

Fig. 4 is a bottom view of the camera actuator according to the first embodiment of the present invention after the substrate is removed.

Fig. 5 is a schematic cross-sectional view of the FPC in the first embodiment of the present invention.

Fig. 6 is a structural view of the FPC in the second embodiment of the present invention.

Fig. 7 is a view showing a structure of connection between the FCP and the movable portion according to a third embodiment of the present invention.

Fig. 8 is a view showing a structure of connection between the FCP and the movable portion according to the fourth embodiment of the present invention.

Fig. 9 is a view showing a structure of connection between an FCP and a movable portion according to a fifth embodiment of the present invention.

Fig. 10 is a view showing a structure of connection between an FCP and a movable portion in a sixth embodiment of the present invention.

Fig. 11 is a view showing a connection structure of an FCP and a movable portion in a seventh embodiment of the present invention.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

Referring to fig. 2 to 4, the present invention discloses a camera actuator 2, including a supporting portion 21, a movable portion 22 capable of moving relative to the supporting portion 21, a driving portion 23 and an FPC24 for driving the movable portion 22 to move relative to the supporting portion 21, a camera 221 is disposed on the movable portion 22, the FPC24 includes a flexible circuit board body, the flexible circuit board body includes a front fixed end 241 connected to the bottom of the movable portion 22, a rear fixed end 242 extending out of the bottom of the movable portion 22, and a connecting portion connected between the front fixed end 241 and the rear fixed end 242, the connecting portion includes a first arm 243 extending along a first direction and a second arm 244 extending along a second direction, and a certain included angle is formed between the first direction and the second direction. The connecting portion is provided freely movably below (not connected to) the movable portion 22, and is rotatable in two directions with respect to the movable portion 22.

In this embodiment, the front end of the first arm 243 is connected to the front fixing end 241, the front end of the second arm 244 is connected to the rear fixing end 242, and the ends of the first arm 243 and the second arm 244 are connected together.

In this embodiment, the ends of the first and second arms 243 and 244 are connected together by a chamfered arm 245 that is chamfered with respect to the first and second arms 243 and 244, and the first and second directions are at right angles so that the connecting portion has an L-shape. The ends of the first arm 243 and the second arm 244 may also be connected by other means, such as by other connecting segments that are curved or bent, and are not limited to chamfered arms. Of course, the specific structure of the connection portion is not limited to the above structure. For example, the first arm 243 has a plurality of arms, the second arm 244 has a plurality of arms, and the arms are sequentially connected in an interlaced manner to form a connection structure having various shapes, for example, one or more third arms extending in a third direction may be further provided, and the third arms may be connected between the first arm 243 and the second arm 244, or between the plurality of first arms 243 and between the plurality of second arms 244. Wherein, each connecting section in the connecting part can be in a straight strip shape, and also can be in shapes such as wedges with different widths.

In the initial state, the connection part in the FPC rotates in the first direction and the second direction to a certain extent, so that the FPC is in a non-planar state. In operation, when the movable portion 22 is pivoted, lifted or translated relative to the support portion 21, the front fixing end 241 and the rear fixing end 242 are movable in the coordinate system of the camera actuator relative to the X-axis, Y-axis and Z-axis directions, so that one or more connecting segments in the connecting portion perform corresponding rotation.

The conductive circuit on the FPC24 includes a transmission line, one end of the transmission line extends to the front fixing end 241 and is electrically connected to the signal end of the camera head 221, and the other end extends to the rear fixing end 242 to transmit the signal of the signal end, so as to transmit the detection signal collected by the camera head 221.

Referring to fig. 3, the supporting portion 21 is a supporting frame which is installed in a case where a cover 27 and a base plate 26 are combined.

Referring to fig. 5, the flexible circuit board body includes a first insulating layer 31, a first wire layer 32 disposed on the first insulating layer 31, a second insulating layer 33 disposed on the first wire layer 32, a second wire layer 34 disposed on the second insulating layer 33, and a third insulating layer 35 disposed on the second wire layer 34.

Specifically, the first insulating layer 31 and the second insulating layer 33 are PI layers having a thickness of 20 μm, the first wiring layer 32 and the second wiring layer 34 are copper wire layers having a thickness of 15 μm, and the third insulating layer 35 has a thickness of 10 μm.

Referring to fig. 3, the power supply terminal 231 of the driving portion 23 is disposed on the supporting portion 21, and the camera actuator 2 further includes a power supply circuit board 40, the power supply circuit board 40 having an interface 41 for transmitting power supply, the interface 41 supplying power through the power supply terminal 231 of the power supply circuit board 40.

The supporting portion 21 includes a supporting frame surrounding the movable portion 22, and the power supply circuit board 40 surrounds the front fixing end 241, the first arm 243 and the second arm 244 and is located at a position corresponding to the supporting frame. Wherein the power supply circuit board 40 is mounted below the support frame.

Referring to fig. 6, in order to distinguish the second embodiment from the first embodiment of the present invention, in this embodiment, there is no need to provide a special power supply circuit board 40, the conductive circuit on the FPC 24' includes a power supply circuit, the flexible circuit board body further includes a power supply bearing portion 246 extended from the rear fixed end 242 to the power supply end 231, one end of the power supply circuit is formed on the power supply bearing portion 246 and electrically connected to the power supply end, and the other end of the power supply circuit extends to the rear fixed end 242 and transmits power to the driving portion 23.

Wherein the supporting portion 21 includes a supporting frame surrounding the movable portion 22, and the power supply bearing portion 246 surrounds the front fixing end 241, the first arm 243 and the second arm 244 and is located at a corresponding position of the supporting frame. The power supply bearing part is positioned below the supporting frame.

Referring to fig. 7, in a third embodiment of the present invention, different from the above embodiment, in the FPC24a of this embodiment, two first arms 243 are opposite to each other at a certain distance, the front ends of the two first arms 243 are respectively connected to the front fixing end 241 and the rear fixing end 242, and one second arm 244 is connected between the front ends of the two first arms 243, and the first direction and the second direction are perpendicular to each other, so that the connecting portion is in a shape of v 21274j.

Referring to fig. 8, in order to achieve the fourth embodiment of the present invention, different from the above-mentioned embodiment, in the FPC24b of this embodiment, the first arm 243 has two and is opposite to a certain distance, the second arm 244 has two and is opposite to a certain distance, two the first arm 243 and two the second arm 244 enclose an annular connecting portion with a notch, the front fixed end 241 and the rear fixed end 242 are respectively connected to the connecting portions at two ends of the notch, and the first direction and the second direction are right angles, so that the connecting portion is a rectangular frame (square ring shape) with a notch.

Referring to fig. 9, in order to achieve the fifth embodiment of the present invention, different from the above-mentioned embodiment, in the FPC24c of this embodiment, the first arms 243 are three and are arranged side by side at a certain interval, the second arms 244 are two, one of the second arms 244 is connected between the front ends of the first arms 243 adjacent to each other, the other of the second arms 244 is connected between the rear ends of the first arms 243 adjacent to each other, the front fixing end 241 is connected to the rear end of the first arm 243, the rear fixing portion 242 is connected to the front end of the third first arm 243, and the first direction and the second direction are perpendicular to each other, so that the connecting portion is approximately S-shaped.

Referring to fig. 10, in order to illustrate a sixth embodiment of the present invention, different from the above-described embodiment, in the FPC24d of this embodiment, two first arms 243 are arranged side by side at a certain interval, one second arm 244 is connected between the front end of the first arm 243 and the rear end of the second first arm 243, the front fixing end 241 is connected to the rear end of the first arm 243, the rear fixing portion 242 is connected to the front end of the second first arm 243, and the first direction and the second direction are non-perpendicular, so that the connecting portion is approximately Z-shaped.

Referring to fig. 11, in order to illustrate a seventh embodiment of the present invention, different from the above embodiment, in the FPC24e of this embodiment, a plurality of strip-shaped holes 2431 are formed on the first arm 243 'along the first direction, and the plurality of strip-shaped holes 2431 are arranged in parallel at a certain interval, so as to form a plurality of connecting strips spaced apart by the strip-shaped holes 2431 on the first arm 243'.

Referring to fig. 11, a plurality of through-holes 2441 are formed in the second arm 244 'along the second direction, and the plurality of through-holes 2441 are arranged in parallel at a certain interval, so as to form a plurality of connecting bars separated by the through-holes 2441 on the second arm 244'.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.

Claims (10)

1. A camera actuator with a sheet-shaped FPC comprises a supporting part, a movable part, a driving part and an FPC, wherein the movable part can move relative to the supporting part, the driving part drives the movable part to move relative to the supporting part, and the movable part is provided with a camera head, and the camera actuator is characterized in that: FPC includes the flexible circuit board body, the flexible circuit board body include with preceding stiff end that the bottom of movable part is connected, extend to outer back stiff end in the bottom of movable part and connect in connecting portion between preceding stiff end and the back stiff end, connecting portion include the first arm that extends along the first direction and the second arm that extends along the second direction, be certain contained angle between first direction and the second direction, conducting wire on the FPC includes the transmission line, the one end of transmission line extends to preceding stiff end is connected with the signal terminal electricity of camera, and the other end extends to back stiff end is in order to carry the signal of signal terminal.

2. The camera actuator of claim 1, wherein: the connecting portion is formed by connecting a plurality of connecting sections in proper order with certain contained angle, the connecting section includes first arm and second arm.

3. The camera actuator of claim 2, wherein: the first arm with preceding stiff end links to each other, the second arm with the back stiff end links to each other, link together through one between first arm and the second arm for first arm and second arm are the chamfer arm of chamfer.

4. The camera actuator of claim 2, wherein: the two first arms are opposite to each other at a certain distance, the front ends of the two first arms are respectively connected with the front fixed end and the rear fixed end, and the second arm is provided with one second arm and is connected between the front ends of the two first arms; alternatively, the first and second electrodes may be,

the two first arms are opposite to each other at a certain distance, the two second arms are opposite to each other at a certain distance, the two first arms and the two second arms enclose an annular connecting part with a notch, and the front fixing end and the rear fixing end are respectively connected with the connecting parts at two ends of the notch; alternatively, the first and second electrodes may be,

the first arm has threely and sets up side by side with a determining deviation, the second arm has two, one the second arm is connected between the front end of two preceding adjacent first arms, another the second arm is connected between the rear end of two back adjacent first arms, preceding stiff end and first the rear end of first arm links to each other, back fixed part is with the third the front end of first arm links to each other.

5. The camera actuator of claim 1, wherein: a plurality of penetrating strip-shaped holes are formed in the first arm along the first direction, and the strip-shaped holes are arranged in parallel at a certain interval so as to form a plurality of connecting strips which are spaced by the strip-shaped holes on the first arm; and/or the presence of a gas in the gas,

the second arm is provided with a plurality of penetrating strip-shaped holes along the second direction, and the strip-shaped holes are arranged in parallel at a certain interval so as to form a plurality of connecting strips which are spaced by the strip-shaped holes on the second arm.

6. The camera actuator of any one of claims 1-5, wherein: the first direction and the second direction are at right angles.

7. The camera actuator of claim 1, wherein: the power supply end of the driving part is arranged on the supporting part, the conducting circuit on the FPC comprises a power supply circuit, the flexible circuit board body further comprises a power supply bearing part, the rear fixing end extends to the power supply end, one end of the power supply circuit is formed on the power supply bearing part and is electrically connected with the power supply end, and the other end of the power supply circuit extends to the rear fixing end and transmits power supply to the driving part.

8. The camera actuator of claim 7, wherein: the supporting part comprises a supporting frame surrounding the periphery of the movable part, and the power supply bearing part surrounds the front fixed end and the connecting part and is located at a position corresponding to the supporting frame.

9. The camera actuator of claim 8, wherein: the power supply bearing part is positioned below the supporting frame.

10. The camera actuator of claim 1, wherein: the supporting part comprises a supporting frame surrounding the periphery of the movable part, a power supply circuit board surrounding the FPC is installed at the bottom of the supporting frame, a power supply end of the driving part is arranged on the supporting frame, one end of the power supply circuit board is electrically connected with the power supply end, and an interface for transmitting a power supply is formed at the other end of the power supply circuit board to supply power to the power supply end.

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