CN113395455B - A new type of bent FPC spring structure - Google Patents
A new type of bent FPC spring structure Download PDFInfo
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- CN113395455B CN113395455B CN202110808020.1A CN202110808020A CN113395455B CN 113395455 B CN113395455 B CN 113395455B CN 202110808020 A CN202110808020 A CN 202110808020A CN 113395455 B CN113395455 B CN 113395455B
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- 230000008093 supporting effect Effects 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims description 40
- 239000010410 layer Substances 0.000 claims description 30
- 238000005452 bending Methods 0.000 claims description 18
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- 239000004020 conductor Substances 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 9
- 230000000670 limiting effect Effects 0.000 description 7
- 230000007306 turnover Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 239000012634 fragment Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
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- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
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- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
- H04N23/682—Vibration or motion blur correction
- H04N23/685—Vibration or motion blur correction performed by mechanical compensation
- H04N23/687—Vibration or motion blur correction performed by mechanical compensation by shifting the lens or sensor position
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
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- Signal Processing (AREA)
- Adjustment Of Camera Lenses (AREA)
- Camera Bodies And Camera Details Or Accessories (AREA)
Abstract
本发明属于微型摄像头技术领域，公开了一种新型折弯FPC弹片结构，设置在具有传感器防抖功能的微型摄像头内，包括具有弹性且能够导电的弹片主体，所述弹性主体包括外围部和用于支撑传感器的中心部，所述中心部具有至少两个向外延伸并与外围部连接的连接部，所述外围部具有多个向一侧翻起形成与中心部所在平面不平行的弹丝臂，所述弹丝臂与外部固定结构连接。本发明提供了一种新型的折弯FPC弹片结构来解决这一问题，本发明在X/Y方向弹性K值合适的情况下，能使Z方向上的弹性K值大幅度提升，能大幅度降低Sensor‑Shift中的姿态差和Z方向上的位移。
The present invention belongs to the technical field of miniature cameras, and discloses a novel bent FPC spring sheet structure, which is arranged in a miniature camera with a sensor anti-shake function, and includes an elastic and conductive spring sheet body, wherein the elastic body includes an outer portion and a central portion for supporting a sensor, wherein the central portion has at least two connecting portions extending outward and connected to the outer portion, and the outer portion has a plurality of elastic wire arms that are turned up to one side and are not parallel to the plane where the central portion is located, and the elastic wire arms are connected to an external fixed structure. The present invention provides a novel bent FPC spring sheet structure to solve this problem. When the elastic K value in the X/Y direction is appropriate, the elastic K value in the Z direction can be greatly improved, and the posture difference in Sensor‑Shift and the displacement in the Z direction can be greatly reduced.
Description
Technical Field
The invention belongs to the technical field of miniature cameras, and particularly relates to a novel bending FPC (flexible printed circuit) spring plate structure.
Background
In terminal devices such as mobile phones, the requirements for photographing are increasing, and there is a need for more photographing functions and better cameras for these mobile terminal devices. Many terminal devices may use a plurality of schemes to upgrade the internal structure thereof in order to improve photographing performance of the existing mobile terminal device. In addition to data processing, the improvement of photographing hardware is also a main improvement direction. However, since the mobile terminal device has a volume limitation, the camera module cannot achieve equivalent performance improvement by enlarging the volume, and more efficient functional components need to be designed in a limited space, which is the improvement idea of the prior art.
The imaging quality is improved in various ways, wherein automatic focusing is a necessary function of the existing camera, and is mainly realized by axially controllable movement of the lens module. In recent years, OIS optical anti-shake is a main improvement direction of improving imaging quality of mobile phones on mobile terminals, and the OIS optical anti-shake is to realize motion compensation on a sensor or a lens module through an internal actuating component, sense motion parameters of the whole terminal equipment through a gyroscope and other equipment, and provide equivalent swing amplitude through the actuating component to improve imaging stability and avoid 'pasting-out' of photos.
The optical anti-shake technology includes lens anti-shake and sensor anti-shake, and in order to reduce the volume of the whole module or set larger sensors or other components under the condition of keeping the volume unchanged, the existing miniature cameras gradually start to apply the sensor anti-shake technology. In the existing sensor anti-shake technology, an FPC elastic sheet is mostly adopted to bear the sensor, and meanwhile, the effects of transmitting image signals and balancing magnetic field are achieved. Ideally, when the camera sensor (X/Y direction) is optically anti-shake, the sensor cannot generate displacement in the Z direction, otherwise the photographing effect is affected, and the degree of displacement of the sensor in the Z direction depends on the magnitude of the elastic K value of the FPC spring plate in the Z direction, so that under the condition of ensuring the proper elastic K value in the X/Y direction, the larger the elastic K value of the FPC spring plate in the Z direction is, the better the larger the elastic K value of the FPC spring plate in the Z direction is, however, the existing FPC spring plate is soft in the Z direction due to the planar structure, and the Z-direction K value is difficult to increase.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an elastic sheet structure applied to an anti-shake module of a sensor, which has a three-dimensional space structure, not only can provide elastic restoring force in the X/Y direction, but also can make up that the traditional elastic sheet can not effectively provide elastic restoring effect in the Z direction.
The technical scheme adopted by the invention is as follows:
The invention provides a novel bending FPC (flexible printed circuit) spring plate structure which is arranged in a miniature camera with a sensor anti-shake function and comprises a spring plate main body which is elastic and conductive, wherein the elastic main body comprises a peripheral part and a central part used for supporting a sensor, the central part is provided with at least two connecting parts which extend outwards and are connected with the peripheral part, the peripheral part is provided with a plurality of spring wire arms which are turned up to one side to form a plane which is not parallel to the plane where the central part is located, and the spring wire arms are connected with an external fixed structure.
Firstly, the elastic sheet is an elastomer structure arranged in the optical anti-shake module of the miniature camera, and the structure can realize accurate electric control on the premise of small enough volume, wherein the elastic sheet serving as a limiting structure is a core functional component. Because the existing sensor anti-shake module is to set the sensor on the spring plate, and the spring plate has two connected parts, one part is connected with the sensor, the other part is connected with an external fixing structure, and the fixing structure is generally a shell of the camera module. The elastic piece has elasticity between the two parts or the whole elastic piece, so that the two parts can relatively move to a certain extent, and the whole sensor can only move in a certain range and speed by being bound by the elasticity of the elastic piece.
An electromagnetic structure connected with the sensor is further arranged in the camera module, and the camera module can be regularly moved by introducing directional current, and the sensor is controlled to move relative to the lens module through the electromagnetic structure, so that the effect of motion compensation is achieved. In the prior art, the motion mode is only translational motion or turnover motion along the X/Y axis of the plane direction of the sensor, but the Z axis (i.e. the direction perpendicular to the plane direction of the sensor) direction is not required, so that the elastic sheet structure can not provide a better elastic constraint effect when the whole sensor moves in the Z axis direction. In order to improve the elastic constraint force in the Z-axis direction, the elastic sheet is firstly cut on a whole sheet body structure to form an elastic sheet shape, and then the residual materials are removed and then turned over for a plurality of times, so that a plurality of elastic wire arms are formed around the peripheral part outside the central part. The peripheral part and the central part are both sheet structures, and the included angle mentioned in the above description is the included angle between the planes of the larger faces of the two parts. The peripheral part is folded to form a certain elastic area in the Z-axis direction, and the peripheral part and the central part jointly act to provide stable elastic limitation in multiple directions for the sensor.
With reference to the first aspect, the present invention provides a first implementation manner of the first aspect, where an angle between the spring arm and a plane in which the center portion is located is in a range of 60 ° to 90 °.
It should be noted that the above included angle range is an optimal range value, and only the minimum angle of the space between the two faces is used as a limiting range, and the maximum range value of the angle is 0-90 °.
With reference to the first aspect, the present invention provides a second implementation manner of the first aspect, where the peripheral portion has a pin portion that initially extends toward the central portion, and the pin portion is turned outward with the spring wire arm portion for the first time and then turned over for the second time to form a state of being directed outward of the peripheral portion.
It is worth to say that the whole elastic sheet is not only used for supporting the sensor, but also integrated with a circuit, the central part is provided with a plurality of contacts connected with the bottom of the sensor, and the whole elastic sheet main body is provided with a plurality of independent circuits and is connected with the outside through the lead parts arranged on the peripheral part. Because the pin part is an integral extension end part of the whole elastic sheet main body, and the elastic sheet main body is formed by cutting a sheet body, when the turnover peripheral part forms the elastic wire arm, the pin part can be turned over along with the turnover and is coplanar with the elastic wire arm. The spring wire arm is in a vertical plane, so that the pin part faces to the outside and is parallel to the center part, and the spring wire arm needs to be folded outwards continuously to be connected with circuit contacts on an external fixing plate in a matching way.
With reference to the first aspect, the present invention provides a third implementation manner of the first aspect, wherein the peripheral portion is an annular polygonal sheet body with a constant width, an inwardly recessed corner portion is provided at a corner of the sheet body, and straight edge portions except the corner portion on the peripheral portion are folded in the same direction to form the wire spring arm.
With reference to the third implementation manner of the first aspect, the present invention provides a fourth implementation manner of the first aspect, wherein a connector is provided between the corner portion and the elastic filament arm, and the connector has at least two bending lines.
With reference to the third implementation manner of the first aspect, the present invention provides a fifth implementation manner of the first aspect, wherein the central portion has a pin hole for installing a ball pin, and the central portion is movably connected with the external fixing structure through the ball pin.
It is worth to say that, current sensor anti-shake module is direct unsettled the sensor through the shell fragment, only provides support and spacing through the shell fragment. However, in order to reduce the space occupation and to achieve a larger elastic adjustment range, the spring structure is adjusted to have a thinner thickness and a longer connecting arm, and this change results in a reduced supporting effect obtained by the sensor. In order to improve stability, a ball pin or ball seat is arranged on the base of the whole camera module, and a ball seat or ball pin is arranged on the structure for bearing the sensor, so that movable connection is realized through cooperation of the ball pin of the ball seat. The support device not only can provide a support effect, but also can limit the moving range and the moving track on the premise of ensuring certain freedom degree.
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 elastic sheet main body is carved with a plurality of through grooves, an inner groove communicated with the corresponding through groove is arranged at the center part, and an outer groove communicated with the corresponding through groove is arranged at the peripheral part;
After the surface of the elastic sheet main body is covered with a layer of insulating material, the through groove is filled with conductive material, the conductive material is piled up in the inner groove to form inner pins, and the outer grooves are internally provided with outer pins.
It should be noted that, because the volume of the elastic sheet in the micro sensor is smaller, the micro sensor can be generally made of technical materials such as memory alloy. However, since the sensor is fixed at the center of the spring, the conventional scheme of conducting electricity through the spring by the voice coil motor cannot be applied to the scheme. The existing sensor anti-shake module is separately provided with the FPC for connection, so that the mode is unnecessary to carry out hollowed-out treatment on the central part of the elastic sheet, and the structural strength and the supporting effect of the sensor anti-shake module are affected. Meanwhile, the independently arranged FPC has a certain length, and the flexible FPC belt which cannot be fixed and restrained can influence the motion control of the sensor.
In this embodiment, the design of the integral elastic sheet main body structure is directly adopted, and the multiple grooves are directly formed in the surface of the elastic sheet main body, shielding is realized by filling an insulating layer, and the independence of the circuit is realized by conducting materials in each groove, or the conducting circuit is directly etched on the whole metal plate, so that the independence of the circuit can be realized. The mode ensures the integrity of the spring plate, avoids independently arranging the FPC, saves space, can form an independent and stable circuit, and ensures that the sensor is normally connected with an external circuit.
With reference to the first aspect and the first to fifth embodiments thereof, the present invention provides a seventh embodiment of the first aspect, the dome body is formed by a multi-layer functional layer patch, and the functional layer includes a dome layer and a circuit layer that are insulated from each other.
With reference to the seventh implementation manner of the first aspect, the present invention provides an eighth implementation manner of the first aspect, wherein the circuit layer is of a soft FPC structure, an inner pin for connecting to the sensor is formed at a central portion, and an outer pin for connecting to an external circuit is formed at an outer peripheral portion.
With reference to the seventh implementation manner of the first aspect, the present invention provides a ninth implementation manner of the first aspect, and the functional layer further includes an insulating layer disposed between the circuit layer and the dome layer.
The beneficial effects of the invention are as follows:
Under the condition that the elasticity K value in the X/Y direction is proper, the invention can greatly improve the elasticity K value in the Z direction, greatly reduce the posture difference in Sensor-Shift and the displacement in the Z direction, and enable the elastic sheet originally used as a Sensor carrier to be simultaneously used as a circuit structure for connecting the Sensor and an external circuit in a multi-layer bonding mode without affecting the original elasticity performance.
Drawings
FIG. 1 is a schematic view of a first axial side of the whole FPC multilayer spring in an unbent state;
FIG. 2 is a top view of the entire FPC multilayer spring in an unbent state according to the present invention;
FIG. 3 is a schematic second axial side view of the whole FPC multilayer spring in an unbent state;
FIG. 4 is an exploded view of the whole FPC multilayer spring sheet of the present invention after the multilayer structure is disassembled in an unbent state;
FIG. 5 is a schematic diagram of a first axial side of the whole FPC multilayer spring sheet after bending and molding;
FIG. 6 is a top view of the entire FPC multilayer spring after being bent and formed in the present invention;
FIG. 7 is a second axial schematic view of the whole FPC multilayer spring after bending and forming in the invention;
Fig. 8 is a side view of the whole FPC multilayer clip after being folded and molded in the present invention.
In the figure, the wire-elastic arm is 1-center part, 2-wire-elastic arm, 3-corner part, 4-inner pin, 5-outer pin, 6-circuit layer, 7-insulating layer, 8-spring plate layer, 9-pin part and 10-pin hole.
Detailed Description
The invention is further illustrated by the following description of specific embodiments in conjunction with the accompanying drawings.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following 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. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which a product of the application is conventionally put in use, it is merely for convenience of describing the present application and simplifying the description, and it is not indicated or implied that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like in the description of the present application, if any, are used for distinguishing between the descriptions and not necessarily for indicating or implying a relative importance.
Furthermore, the terms "horizontal," "vertical," and the like in the description of the present application, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its 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 explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or in communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Example 1:
The existing miniature camera is often applied to mobile terminal equipment such as mobile phones and the like, and has the characteristic of small volume. Because of the requirement of optical anti-shake function under a certain volume, an electric control mechanism composed of an electromagnetic structure and an elastomer is generally adopted to perform motion compensation on a lens module or a sensor. The structure can realize accurate electric control on the premise of small enough volume, wherein the elastic sheet serving as a limiting structure is a core functional component.
The embodiment discloses novel FPC shell fragment structure of bending sets up in having sensor anti-shake function's miniature camera head, including having elasticity and the shell fragment main part that can electrically conduct, the elasticity main part includes peripheral portion and is used for supporting the central part 1 of sensor, central part 1 has at least two outwards extension and the connecting portion of being connected with peripheral portion, peripheral portion has a plurality of to one side turn up form with the non-parallel spring silk arm 2 of the plane of central part 1 place, spring silk arm 2 is connected with outside fixed knot constructs.
An electromagnetic structure connected with the sensor is further arranged in the camera module, and the camera module can be regularly moved by introducing directional current, and the sensor is controlled to move relative to the lens module through the electromagnetic structure, so that the effect of motion compensation is achieved. In the prior art, the motion mode is only translational motion or turnover motion along the X/Y axis of the plane direction of the sensor, but the Z axis (i.e. the direction perpendicular to the plane direction of the sensor) direction is not required, so that the elastic sheet structure can not provide a better elastic constraint effect when the whole sensor moves in the Z axis direction. In order to improve the elastic constraint force in the Z-axis direction, the elastic sheet is firstly cut on a whole sheet body structure to form an elastic sheet shape, and then the residual materials are removed and then turned over for a plurality of times, so that a plurality of elastic wire arms 2 are formed around the outer periphery of the central part 1. The peripheral portion and the central portion 1 are both sheet structures, and the included angle mentioned in the above description is the included angle between the planes of the larger faces of the two portions. The peripheral part is folded to form a certain elastic area in the Z-axis direction, and the elastic area and the central part 1 jointly act to provide stable elastic limitation in multiple directions for the sensor.
Further, the angle between the spring arm 2 and the plane of the central portion 1 is in the range of 60-90 °, and is optimally 90 °.
Further, since the whole spring is not only used for supporting the sensor, but also integrated with a circuit, the center part 1 is provided with a plurality of contacts connected with the bottom of the sensor, and a plurality of independent circuits are arranged on the whole spring body. Meanwhile, the outer peripheral part is provided with a pin part 9 which initially extends towards the central part 1, and the pin part 9 is turned outwards along with the part of the spring wire arm 2 for the first time and then turned for the second time to form a state of facing the outer side of the outer peripheral part.
Since the pin 9 is an integral extension end of the whole spring body, and the spring body is formed by cutting a sheet body, when the periphery is folded to form the spring arm 2, the pin 9 is folded and coplanar with the spring arm 2. The spring arm 2 is in a vertical plane, and in order to make the pin part 9 face to the outside and parallel to the central part 1, the spring arm needs to be folded outwards continuously to be matched and connected with circuit contacts on an external fixing plate.
Further, the peripheral part is a ring polygon sheet body with constant width, an inward concave corner part 3 is arranged at the corner of the sheet body, the straight edge part except the corner part 3 on the peripheral part is folded in the same direction to form the elastic wire arm 2, a connecting body is arranged between the corner part 3 and the elastic wire arm 2, and the connecting body is provided with at least two bending lines. The polygonal shape is a structure in which the annular metal sheet is cut to have a plurality of corners and a linear body, and since the width is kept constant, the linear body is directly folded by 90 degrees to damage the entire peripheral portion. The general way is by cutting a slot at the corner, and then the slot depth is the width of the whole spring arm 2. But this also reduces the structural strength of the entire peripheral portion and creates stress concentrations at the cut slots. In order to achieve a good folding effect, the technological difficulty is measured on the premise that the structural strength of the elastic sheet is not affected, and an inward concave corner part 3 is formed at a corner directly during cutting. The inward concave refers to the defect that the corner of one polygonal ring protrudes towards the center, so that stress concentration points, even cracks and folds formed by straight lines, can not occur when the straight lines on two sides are turned over under the condition of unchanged width. Meanwhile, the turnover line of the straight line body is positioned on the corner part 3 which is concave inwards, the turnover line is uniform, and the structural stability is high.
Example 2:
The present embodiment is optimized and defined based on the above embodiment 1, as shown in fig. 1 to 8, wherein the entire spring body has the structural shape of the above embodiment 1 after being manufactured and molded, and includes a central rectangular-like central portion 1 and an annular quadrilateral peripheral portion surrounding the outside of the central portion 1.
Two connecting parts are arranged between the peripheral part and the central part 1, the connecting parts and the peripheral part are all formed by cutting the same sheet body in the initial stage of manufacture, are positioned on the same plane and are integrally connected. Corner portions 3 are provided at four corners of the peripheral portion, while straight portions of the peripheral portion have inwardly extending leg portions 9. The straight line part of the peripheral part is turned over for the first time to form the wire spring arm 2 and the downward pin part 9 which are vertically arranged upwards, and then the pin part 9 is turned outwards through the second time of turning over to enable the outer pin 5 arranged on the surface of the pin part to be buckled downwards, so that the pin part is contacted and attached with electric shock on the base of the external camera module.
That is, the central portion 1 is used for connecting the sensor, and the peripheral portion is used for fixing the pin portion 9 to the external structure, so that the sensor can be suspended from the external structure on the premise of satisfying the conductivity. At this time, it can be seen that, since the upper portion of the pin portion 9 is the spring arm 2, but the spring arm 2 and the pin portion 9 are not in the same horizontal plane, the forces on different planes will mainly provide the elastic restoring force by the plane structure perpendicular to the plane. The existing integrated plane spring plate structure can only provide a better elastic limiting effect in one direction, and the space spring plate in the embodiment is enough to support the sensor to perform displacement elastic limiting in multiple angles.
In this embodiment, the whole shrapnel body has a three-layer structure, which is a circuit layer 6, an insulating layer 7 and an shrapnel layer 8 in sequence.
The circuit layer 6 is a copper layer for wiring, the surface of the central part 1 is provided with an inner pin 4, the inner pin 4 is connected with a sensor contact to connect a signal line of the intermediate sensor to the outside, the insulating layer 7 is a PI layer for insulation, the lowest spring sheet layer 8 is a main structure of the whole spring sheet, and rolled copper, VCM spring sheet materials or other metal materials can be adopted for adjusting the K value of the spring. The three parts are connected and regulated through adhesive.
Further, the central part 1 of the present embodiment has a plug hole 10 for mounting a ball pin by which the central part 1 is movably connected with an external fixing structure.
The invention is not limited to the alternative embodiments described above, but any person may derive other various forms of products in the light of the present invention. The above detailed description should not be construed as limiting the scope of the invention, which is defined in the claims and the description may be used to interpret the claims.
Claims (9)
1. The novel bending FPC shrapnel structure is arranged in a miniature camera with a sensor anti-shake function and is characterized by comprising an elastic and conductive shrapnel main body, wherein the shrapnel main body comprises a peripheral part (2) and a central part (1) for supporting a sensor, the central part (1) is provided with at least two connecting parts (12) which extend outwards and are connected with the peripheral part (2), the peripheral part (2) is provided with a plurality of wire spring arms (11) which are turned up to one side to form a plane which is not parallel to the plane where the central part (1) is located, and the wire spring arms (11) are connected with an external fixed structure;
the outer periphery (2) is provided with a pin part (9) which initially extends towards the central part (1), the pin part (9) is folded outwards along with the wire spring arm (11) for the first time, the wire spring arm (11) is positioned on a vertical plane, and the pin part (9) is folded for the second time to form a state parallel to the central part (1) towards the outer side of the outer periphery (2).
2. The novel bending FPC spring plate structure according to claim 1, wherein an included angle between the spring wire arm (11) and a plane where the central part (1) is located is 60-90 degrees.
3. The novel bending FPC spring plate structure is characterized in that the peripheral portion (2) is a ring-shaped polygonal sheet body with unchanged width, an inward concave corner portion (3) is arranged at a corner of the sheet body, and straight edge portions of the peripheral portion (2) except the corner portion (3) are folded in the same direction to form the spring wire arm (11).
4. The novel bending FPC spring plate structure according to claim 3, wherein a connector is arranged between the corner part (3) and the spring wire arm (11), and the connector is provided with at least two bending lines.
5. The novel bending FPC spring plate structure according to claim 3, wherein the center portion (1) is provided with a bolt hole (10) for installing a ball pin, and the center portion (1) is movably connected with an external fixing structure through the ball pin.
6. The novel bending FPC spring plate structure according to any one of claims 1 to 5, wherein a plurality of through grooves are engraved on the spring plate main body, an inner groove communicated with the corresponding through groove is arranged at the center part (1), and an outer groove communicated with the corresponding through groove is arranged at the peripheral part (2);
After the surface of the elastic sheet main body is covered with a layer of insulating material, conductive material is filled in the through groove, the conductive material is piled up in the inner groove to form an inner pin (4), and an outer pin (5) is formed in the outer groove.
7. The novel bending FPC spring structure according to any one of claims 1 to 5, wherein the spring body is formed by a multi-layer functional layer patch, and the functional layer comprises a spring layer (8) and a circuit layer (6) which are insulated from each other.
8. The novel bending FPC spring structure according to claim 7, wherein the circuit layer (6) is a soft FPC structure, an inner pin (4) for connecting a sensor is formed at the center part (1), and an outer pin (5) for connecting an external circuit is formed at the peripheral part (2).
9. The novel bending FPC spring structure according to claim 7, wherein the functional layer further comprises an insulating layer (7) arranged between the circuit layer (6) and the spring layer (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110808020.1A CN113395455B (en) | 2021-07-16 | 2021-07-16 | A new type of bent FPC spring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110808020.1A CN113395455B (en) | 2021-07-16 | 2021-07-16 | A new type of bent FPC spring structure |
Publications (2)
| Publication Number | Publication Date |
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| CN113395455A CN113395455A (en) | 2021-09-14 |
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| GB2615738A (en) * | 2021-12-31 | 2023-08-23 | Cambridge Mechatronics Ltd | Actuator assembly |
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| JP6710775B2 (en) * | 2016-03-11 | 2020-06-17 | アップル インコーポレイテッドＡｐｐｌｅ Ｉｎｃ． | Optical image stabilization with voice coil motor to move image sensor |
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