阅读说明：本技术 折叠电路板结构 (Folding circuit board structure ) 是由 麦练智 于 2020-04-29 设计创作，主要内容包括：本发明涉及防抖云台领域,具体涉及了一种折叠电路板结构,其特征在于,包括依次相连接的固定载板、至少一个连接部件和活动载板；每个连接部件和与其相邻的至少一个连接部件在参考平面上沿相互倾斜设置的两个方向布置,参考平面平行于固定载板,部分或全部所述连接部件上设有折叠结构；折叠结构包括多个首尾相连的连接载板,相邻的两个连接载板非共面设置且二者通过弯折载板相连接,使多个连接载板和弯折载板形成S形,折叠结构可以实现活动载板相对固定载板绕多轴摆动,而且该折叠电路板结构的折叠结构可确保多轴上的弹性系数基本相同,避免云台出现多个运动轴上的防抖功耗不一致的现象,降低防抖云台的整体功耗。(The invention relates to the field of anti-shake pan-tilt, in particular to a folding circuit board structure which is characterized by comprising a fixed carrier plate, at least one connecting component and a movable carrier plate which are sequentially connected; each connecting part and at least one connecting part adjacent to the connecting part are arranged on a reference plane along two directions which are obliquely arranged with each other, the reference plane is parallel to the fixed carrier plate, and a folding structure is arranged on part or all of the connecting parts; the folding structure comprises a plurality of end-to-end connection support plates, the two connection support plates are arranged in a non-coplanar manner and connected with each other through the bending support plate, so that the connection support plates and the bending support plates form an S shape, the folding structure can realize that the movable support plate relatively fixes the support plates and swings around multiple shafts, the folding structure of the folding circuit board structure can ensure that the elastic coefficients of the multiple shafts are basically the same, the phenomenon that the anti-shaking power consumption of the tripod head on multiple motion shafts is inconsistent is avoided, and the overall power consumption of the anti-shaking tripod head is reduced.)

1. A folding circuit board structure is characterized by comprising a fixed carrier plate, at least one connecting component and a movable carrier plate which are sequentially connected;

each connecting part and at least one connecting part adjacent to the connecting part are arranged on a reference plane along two directions which are obliquely arranged with each other, and a folding structure is arranged on part or all of the connecting parts;

the folding structure comprises a plurality of end-to-end connecting support plates, the two adjacent connecting support plates are arranged in a non-coplanar manner and are connected with each other through the bent support plate, so that the plurality of connecting support plates and the bent support plates form an S shape.

2. The structure of the foldable circuit board of claim 1, wherein two adjacent connection carrier boards are disposed obliquely and have an included angle of 0-45 °.

3. The folded circuit board structure of claim 2, wherein an included angle between two adjacent connection carrier boards is 3 °.

4. The folded circuit board structure of claim 1, wherein the width of the connection carrier board in the extending direction thereof is at least one time greater than the thickness of the connection carrier board in the extending direction thereof.

5. The folded circuit board structure of claim 1, wherein each of the connecting members and the connecting member adjacent thereto form an angle of 45-135 ° with respect to a reference plane.

6. The folded circuit board structure of claim 5, wherein each of the connection members is angled 90 ° from its adjacent connection member in a reference plane.

7. The structure of a foldable circuit board according to claim 1, wherein there are two of the connecting members, which are respectively denoted as a first connecting member and a second connecting member, and the fixed carrier plate, the first connecting member, the second connecting member and the movable carrier plate are connected in sequence;

the first connecting part and the second connecting part are arranged on a reference plane along two directions which are obliquely arranged with each other, the reference plane is parallel to the fixing carrier plate, and a folding structure is arranged on the first connecting part and/or the second connecting part.

8. The folded circuit board structure of claim 7, wherein the number of the first connecting component and the second connecting component is two, and the first connecting component and the second connecting component are disposed on two sides of the movable carrier.

9. The folded circuit board structure of claim 1, wherein the folded structure of each connection member has at least three of the bent carrier plates.

10. The foldable circuit board structure of claim 1, wherein the image sensor of the camera module is disposed on the movable carrier.

Technical Field

The invention relates to the field of anti-shake holders, in particular to a folding circuit board structure.

Background

In recent years, small-sized mobile devices with shooting functions are quite popular, and the application range is also continuously expanded, including aerial photography, motion cameras and automobile data recorders. The device comprises at least one Compact camera module (Compact camera module). Therefore, the market of the module is huge, and the growth is steadily promoted.

When taking pictures and films, the pictures and films taken by the device are likely to be blurred or shaken by external vibration, which affects the quality of the pictures and films. This problem is exacerbated when the vibrations are relatively intense, or in low light conditions.

In order to solve the above problems, many small-sized anti-shake technologies have appeared on the market. Among them, the effect of improving the picture quality is most excellent by mechanically compensating for the blurring and shaking of the image due to the vibration. The mechanical method can be to translate a group of lenses through an anti-shake actuator (refer to patent documents CN104204934A, US20140333784A1) or rotate a group of lenses and an image sensor (refer to patent documents CN102934021B, US9229244B2) to achieve an anti-shake effect. The second rotary mechanical method is usually better than the first translational mechanical method in anti-shake effect, so the small circuit board design of the present invention is mainly directed to the rotary method.

Since the rotary anti-shake actuator needs to move the image sensor during the anti-shake process, the circuit board connected to the image sensor needs to be connected to other fixed structures through an elastic structure capable of conducting electricity, so that other external components (such as a single chip microcomputer and a power supply component on a main board of a small mobile device) can be electrically connected and communicated with the image sensor, and can capture images and provide power.

The elastic structures are all usually composed of Flexible Printed Circuit Boards (Flexible Printed Circuit Boards), have good multi-axis elasticity and drop resistance, can resist impact and acceleration force when falling, and do not influence the multi-axis movement of the movable structure in the actuator in the anti-shake process.

For rotary anti-shake actuators, existing circuit board designs can be divided into two categories. The first category (patent documents: CN107315302A, CN208399865U) is not folded, and the elastically deformable portion of the circuit board connecting the movable and stationary portions is on a plane, and the multi-axis rotational freedom is achieved by special circuit board design. The technology has the advantages of small required space, simple production process and low cost.

The second category (references: CN106338873B, CN109752863A) achieves multiaxial freedom by up to three crimps. The advantage of this design is that a maximum of three-axis rotational degrees of freedom can be provided.

In the first prior art (refer to patent documents: CN107315302A, CN208399865U), although the multi-axis rotational degree of freedom can be provided, the spring coefficient in the optical axis rotational direction (rolling) is usually much larger than that of the other two axes (yaw and pitch), which results in excessive power consumption in the rolling direction, difficulty in realizing rolling anti-shake, or reduction in battery endurance.

In the second prior art (refer to patent documents: CN106338873B, CN109752863A), in order for the elastic structure to have good multiaxial elasticity and drop resistance, the flexible circuit board composing the elastic structure often needs to be curled or needs to have a longer shape. Such a design requires a large space for the anti-shake actuator, which hinders the miniaturization of the anti-shake actuator. In addition, the coefficient of the multi-axis rotating spring of the design is generally higher, so the average anti-shake power consumption is higher; and it is difficult to make the spring coefficients of each axis very close, resulting in large power consumption difference in different directions, and power consumption in some directions will be higher than that in other directions.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a flexible circuit board for solving the problem that it is difficult to achieve multi-axis anti-shake and a large difference in anti-shake power consumption in multiple directions in the conventional anti-shake pan/tilt head.

Based on the structure, the invention provides a folding circuit board structure, which comprises a fixed carrier plate, at least one connecting part and a movable carrier plate which are sequentially connected;

each connecting part and at least one connecting part adjacent to the connecting part are arranged on a reference plane along two directions which are obliquely arranged with each other, the reference plane is parallel to the fixed carrier plate, and a folding structure is arranged on part or all of the connecting parts;

the folding structure comprises a plurality of end-to-end connecting support plates, the two adjacent connecting support plates are arranged in a non-coplanar manner and are connected with each other through the bent support plate, so that the plurality of connecting support plates and the bent support plates form an S shape.

Preferably, two adjacent connection carrier plates are arranged in an inclined mode, and the included angle between the two connection carrier plates is 0-45 degrees.

Preferably, the included angle between two adjacent connection carrier plates is 3 °.

Preferably, a width of the connection carrier plate in an extending direction thereof is greater than a thickness of the connection carrier plate in the extending direction thereof by at least one time.

Preferably, each connecting part and the connecting part adjacent to the connecting part form an included angle of 45-135 degrees on a reference plane.

Preferably, each of the connecting members and the connecting member adjacent thereto have an angle of 90 ° with respect to a reference plane.

Preferably, the number of the connecting parts is two, the two connecting parts are respectively marked as a first connecting part and a second connecting part, and the fixed carrier plate, the first connecting part, the second connecting part and the movable carrier plate are sequentially connected;

the first connecting part and the second connecting part are arranged on a reference plane along two directions which are obliquely arranged with each other, the reference plane is parallel to the fixing carrier plate, and a folding structure is arranged on the first connecting part and/or the second connecting part.

Preferably, the number of the first connecting parts and the second connecting parts is two, and the first connecting parts and the second connecting parts are arranged on two sides of the movable carrier plate.

Preferably, each of the folded structures of the connecting members has at least three of the bent carrier plates.

Preferably, the image sensor of the camera module is arranged on the movable carrier plate.

The invention relates to a folding circuit board structure which is characterized by comprising a fixed carrier plate, at least one connecting component and a movable carrier plate which are sequentially connected; each connecting part and at least one connecting part adjacent to the connecting part are arranged on a reference plane along two directions which are obliquely arranged with each other, the reference plane is parallel to the fixed carrier plate, and a folding structure is arranged on part or all of the connecting parts; the folding structure comprises a plurality of end-to-end connection support plates, the two connection support plates are arranged in a non-coplanar manner and connected with each other through the bending support plate, so that the connection support plates and the bending support plates form an S shape, the folding structure can realize that the movable support plate relatively fixes the support plates and swings around multiple shafts, the folding structure of the folding circuit board structure can ensure that the elastic coefficients of the multiple shafts are basically the same, the phenomenon that the anti-shaking power consumption of the tripod head on multiple motion shafts is inconsistent is avoided, and the overall power consumption of the anti-shaking tripod head is reduced.

Drawings

FIG. 1 is a schematic structural diagram of a folded circuit board structure according to an embodiment of the present invention;

FIG. 2 is a schematic top view of a folded circuit board structure according to an embodiment of the invention;

FIG. 3 is a schematic diagram of a folded structure of a folded circuit board structure according to an embodiment of the invention;

FIG. 4 is a second schematic structural diagram of a folded circuit board structure according to an embodiment of the present invention;

FIG. 5 is a second schematic top view of a foldable circuit board structure according to an embodiment of the invention;

fig. 6 is a schematic structural diagram of the connection carrier boards of the foldable circuit board structure according to the embodiment of the invention, the connection carrier boards being inclined to each other;

FIG. 7 is a third schematic structural diagram of a foldable circuit board structure according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of the connecting carrier boards parallel to each other of the foldable circuit board structure according to the embodiment of the invention;

fig. 9 is a schematic structural diagram of a connection daughter board of the folded circuit board structure according to an embodiment of the present invention.

Wherein, 1, fixing a carrier plate; 2. a first connecting member; 3. a second connecting member; 4. a movable carrier plate; 5. a folded configuration; 51. connecting a carrier plate; 511. connecting the daughter board; 52. bending the support plate; 6. an image sensor.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Referring to fig. 1 to 9, a folded circuit board structure of the present invention is schematically shown, which includes a fixed carrier board 1, at least one connecting component and a movable carrier board 4 connected in sequence, wherein the number of the connecting components may be one or more, as shown in fig. 1, the number of the connecting components is only one, and the connecting component is referred to as a first connecting component 2.

This folding circuit board structure mainly used miniature anti-shake cloud platform, miniature anti-shake cloud platform have motionless structure and movable structure, and the camera module is installed on movable structure, and the relative motionless structure of movable structure moves in order to offset the external motion that gives motionless structure, realizes the anti-shake function. Specifically, the fixed carrier plate 1 is installed on a fixed structure of the pan/tilt head, the movable carrier plate 4 is installed on a movable structure of the pan/tilt head, the image sensor 6 is disposed on the movable carrier plate 4, the fixed carrier plate 1, the connecting component and the movable carrier plate 4 are provided with electric conductors, and the image sensor 6 is electrically connected to a circuit element (such as a main control board) outside the micro anti-shake pan/tilt head through the electric conductors.

In some alternative embodiments, as shown in fig. 4, the number of connecting parts is two and is respectively referred to as a first connecting part 2 and a second connecting part 3, the fixed carrier plate 1, the first connecting part 2, the second connecting part 3 and the movable carrier plate 4 are connected in sequence, the first connecting part 2 and the second connecting part 3 are arranged in two directions arranged obliquely to each other on a reference plane, the reference plane is parallel to the fixed carrier plate 1, wherein the first connecting part 2 and the second connecting part 3 are preferably arranged perpendicularly to each other, and the first connecting part 2 and/or the second connecting part 3 are provided with a folded structure 5.

The folding structure 5 includes a plurality of connecting carrier plates 51 connected end to end, two adjacent connecting carrier plates 51 are disposed in a non-coplanar manner and connected with each other through a bent carrier plate 52, so that the plurality of connecting carrier plates 51 and the bent carrier plate 52 form an S shape, that is, two adjacent connecting carrier plates 51 may be parallel to each other (as shown in fig. 8) or inclined to each other (as shown in fig. 6), and an included angle between two adjacent connecting carrier plates 51 is 0-45 °. As shown in fig. 3, the number of the connecting carrier plates 51 in the folding structure 5 may be four, and correspondingly, since two adjacent connecting carrier plates 51 are connected by one bending carrier plate 52, the number of the bending carrier plates 52 is three, optionally, the included angle between two adjacent connecting carrier plates 51 is 3 °, the folding structure 5 of this type of structure can realize that the movable carrier plate 4 swings around multiple axes relative to the fixed carrier plate 1, and the folding structure 5 of the folding circuit board structure can ensure that the elastic coefficients on the multiple axes are substantially the same, thereby avoiding the phenomenon that the anti-shake power consumption of the cradle head is inconsistent on multiple motion axes, and reducing the overall power consumption of the anti-shake cradle head.

Preferably, the width of connection carrier plate 51 in its extending direction is at least one time greater than the thickness of connection carrier plate 51 in its extending direction.

The fixed carrier plate 1, the first connecting part 2, the second connecting part 3 and/or the movable carrier plate 4 may be provided with position sensors, which are used to detect the displacement or rotation amplitude of the movable carrier plate 4 (movable structure of the pan/tilt head) to realize anti-shake control.

Referring to fig. 4 and 7, the number of the first connecting part 2 and the second connecting part 3 is two, the movable carrier plate 4 is provided with the first connecting part 2 and the second connecting part 3 on both sides, and the included angle between the first connecting part 2 and the second connecting part 3 on the reference plane is 45-135 °, and may be 90 ° in some alternative embodiments. Two second connecting parts 3 are connected to one side of the movable carrier 4, and the first connecting part 2 and the second connecting part 3 are connected by a flat plate-shaped intermediate connecting part.

Since the first and second connection parts 2, 3 have different directions of extension, i.e. the folding structures 5 with which they are equipped have different directions of extension, the plurality of folding structures 5 can take over the deformations required for the displacement of the mobile structure of the head in different directions. For example, when the movable carrier plate 4 moves along the X-axis direction relative to the fixed carrier plate 1, the folding structure 5 on the first connecting part 2 deforms to provide the required degree of freedom of the movable carrier plate 4 in the X-axis direction; when the movable carrier plate 4 moves in the Y-axis direction relative to the fixed carrier plate 1, the folding structures 5 on the second connection parts 3 deform to provide the required degree of freedom of the movable carrier plate 4 in the Y-axis direction. When the movable carrier plate 4 is swung around the X-axis, Y-axis or Z-axis, the folding structures 5 on both the first connecting part 2 and the second connecting part 3 can be deformed to provide the required degree of freedom for the movable carrier plate 4. Wherein, X axle, Y axle and Z axle are two liang of looks vertical settings. The connection carrier plate 51 and the bending carrier plate 52 in the folding circuit board structure of the invention are both plate-shaped structures, and the elasticity coefficient is lower, thereby being beneficial to improving the anti-shake performance of the cradle head and reducing the power consumption of the cradle head.

When two adjacent connection carrier plates 51 in the folding structure 5 are parallel to each other, the extending length of the folding structure 5 can be smaller to save the space occupation of the folding circuit board structure of the present invention, which is beneficial to reducing the volume of the micro anti-shake cradle head.

During the production process, the carrier plate 52 can be bent to have a certain curvature by the existing cold or hot pressing process.

As shown in fig. 9, the connection carrier 51 includes at least two connection daughter boards 511 disposed parallel to each other, a gap is left between two adjacent connection daughter boards 511, and the folded carrier 52 does not adopt the layered design of the connection carrier 51. The layered design of the connection carrier plate 51 is beneficial to reduce the elastic coefficient thereof.

The folding structure 5 can resist violent impact which may occur in a general falling process, and the folding structure 5 cannot generate permanent deformation, so that the reliability of the folding circuit board structure is effectively improved.

In some alternative embodiments, the folded structure 5 of the first connecting part 2 has five bent carrier plates 52 and the folded structure 5 of the second connecting part 3 has seven bent carrier plates 52. Of course, it is within the scope of the present invention to add a fillet or chamfer design to the fixed carrier plate 1, the first connecting part 2, the second connecting part 3 or the movable carrier plate 4.

The beneficial effects of the invention include:

1. the design of the existing circuit board is improved, the multi-axis freedom degree is provided, and the multi-axis elasticity coefficient, particularly the rolling direction, is reduced;

2. the power consumption and the volume of the miniature holder anti-shake camera module are reduced;

3. the anti-shake camera module adopting the circuit board design can support multi-axis anti-shake, and has more advantages in size, reliability and cost.

In summary, the structure of the foldable circuit board of the present invention is characterized in that the structure comprises a fixed carrier plate 1, at least one connecting component and a movable carrier plate 4, which are connected in sequence; each connecting part and at least one connecting part adjacent to the connecting part are arranged along two directions which are obliquely arranged with each other on a reference plane, the reference plane is parallel to the fixed carrier plate 1, and a folding structure 5 is arranged on part or all of the connecting parts; the folding structure 5 comprises a plurality of end-to-end connecting support plates 51, the two adjacent connecting support plates 51 are arranged in a non-coplanar manner and connected with each other through the bending support plate 52, so that the connecting support plates 51 and the bending support plate 52 form an S shape, the folding structure 5 can realize that the movable support plate 4 swings around multiple shafts relative to the fixed support plate 1, the folding structure 5 of the folding circuit board structure can ensure that the elastic coefficients of the multiple shafts are basically the same, the phenomenon that the anti-shaking power consumption of the tripod head on multiple movement shafts is inconsistent is avoided, and the overall power consumption of the anti-shaking tripod head is reduced.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.