CN215453078U - Fixed focus motor structure based on sensor displacement technology - Google Patents
Fixed focus motor structure based on sensor displacement technology Download PDFInfo
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- CN215453078U CN215453078U CN202121764601.1U CN202121764601U CN215453078U CN 215453078 U CN215453078 U CN 215453078U CN 202121764601 U CN202121764601 U CN 202121764601U CN 215453078 U CN215453078 U CN 215453078U
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Abstract
The application relates to the technical field of camera equipment, and discloses a fixed focus motor structure based on a sensor displacement technology, which comprises an image sensor, a driving mechanism and a shell, wherein the driving mechanism is used for driving the image sensor to move; the flexible circuit board is used for installing the image sensor and is arranged in the shell, and elastic sponge connected with the shell is arranged on the bottom surface of the flexible circuit board. According to the image sensor, the elastic sponge connected with the shell is arranged at the bottom of the flexible circuit board used for mounting the image sensor and synchronously moving with the image sensor, so that the inertia effect of the image sensor during reset after moving is reduced, and the anti-shake movement of the image sensor is buffered; meanwhile, the elastic sponge made of special materials and having high heat conductivity coefficient can also construct a heat conduction channel from the flexible circuit board to the shell, so that the heat dissipation capacity of the motor is enhanced, and the working precision of internal parts of the motor is guaranteed.
Description
Technical Field
The application relates to the technical field of camera equipment, in particular to a fixed focus motor structure based on a sensor displacement technology.
Background
At present, more and more mobile phones adopt a Sensor-Shift technology to replace the former carried OIS optical anti-shake technology, so that the effect of capturing the dynamic state of the camera is improved, and the OIS optical anti-shake scheme is realized by driving a lens through a VCM motor to correct the angle. With the increasing abundance of scenes photographed by the mobile phone and the increasing demand for anti-shaking, the photographing effect of the mobile phone in the scene of motion photography is improved inevitably; in addition, the terminal brand controls the product cost of parts more seriously, and finally, the VCM motor product with the OIS function has larger volume and is contrary to the requirement of the terminal brand on the light and thin appearance of the whole machine, and the problem can be avoided by the Sensor-Shift technology. In summary, it can be seen that the implementation of the Sensor-Shift technique is expected to bring improvements in more detail to the mobile terminal products. With the new Sensor-Shift technology, the image Sensor can be realized by a MEMS OIS mode, and the main characteristic is that related components are positioned at the bottom of the CMOS image Sensor, so that the image Sensor can be rapidly and accurately moved in the X/Y direction.
The Sensor-Shift technology is adopted, except for adding some more precise parts, the assembly process is complex and different from the traditional technology, and has greater challenges for manufacturers such as FPC (flexible printed circuit) and modules, so related products are not widely developed at the present stage, and the initial capacity after mass production is not too large. In order to enhance the photographing function of products such as mobile phones, various improvements are generally performed on the VCM motor to add an auto-focus function and even various anti-shake functions, but various motors have their own defects, for example, in the process of the voice coil motor, an image sensor in the camera module is difficult to prevent dust, and is easy to scrap, and in addition, the camera module is formed by a lens matched with the motor, so the design of the motor limits the design of the lens. Small motors cannot match large lenses. And for the optical anti-shake motor, anti-shake compensation in two directions can be realized, shake in actual photographing is in three directions, and three-direction optical anti-shake can be realized only by moving the image sensor.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the application provides a fixed focus motor structure based on a sensor displacement technology.
In order to achieve the purpose, the technical scheme adopted by the application is as follows:
a fixed focus motor structure based on sensor displacement technology comprises an image sensor, a driving mechanism and a shell, wherein the driving mechanism is used for driving the image sensor to move, and the shell is used for accommodating the image sensor and the driving mechanism; the flexible circuit board is used for installing the image sensor and is arranged in the shell, and elastic sponge connected with the shell is arranged on the bottom surface of the flexible circuit board.
The fixed focus motor structure provided by the scheme is a motor structure which enables an image Sensor to do anti-shake motion based on a Sensor-Shift technology, a shell in the motor structure plays a part for supporting and protecting, the image Sensor and a driving mechanism are both accommodated in the shell, in a complete camera device, the image Sensor is matched with a lens to complete photoelectric conversion, a picture in front of the lens is a component recognized by a machine, image shake on the image Sensor through refraction of the lens can be caused by hand shake in the shooting process to form unclear images, and the driving mechanism drives the image Sensor to do motion opposite to the shake direction, so that shake in shooting is compensated, and imaging definition is increased. The image sensor in this scheme is by movable mounting in the casing through the flexible circuit board, according to the theory of operation of sensor displacement technique, image sensor moves at certain within range for the casing, then the flexible circuit board is along with image sensor moves, flexible circuit board and casing are connected to the elasticity sponge, flexible circuit board and image sensor move the ability and restore to the throne under the elasticity recovery effect of elasticity sponge, and the elasticity sponge absorbs the partial inertia of flexible circuit board and image sensor motion that resets, provide the buffering for it resets, guarantee anti-shake motion control's accuracy. In addition, in order to solve the problem of heat generation of the internal mechanism of the shell, the elastic sponge can construct a heat conduction channel from the flexible circuit board to the shell, and the elastic sponge is a special sponge added with a material with a higher heat conduction coefficient, such as graphite, and is not a common sponge with an extremely low heat conduction coefficient.
It is worth to be noted that the flexible circuit board in the scheme provides necessary installation conditions for the anti-shake motion of the image sensor, and ensures that the motion track and the motion range of the image sensor are controllable, and the driving mechanism is used as a structure for driving the image sensor to move, and is not limited to any one of a micro motor or a coil magnet in the prior art.
Further, the driving mechanism comprises a coil support fixedly connected with the image sensor, a coil fixedly installed on the coil support, and a plurality of magnets distributed around the coil. According to the scheme, the magnetic field generated after the coil is electrified is stressed in the magnetic field of the magnet, and the coil support move, so that the image sensor is driven to move.
Furthermore, the flexible circuit board comprises a fixed part fixedly connected with the shell and a movable part used for installing the image sensor, and the movable part is movably connected with the movable part into a whole through an elastic arm.
Further, the shell comprises an upper cover with an open top center and a lower cover buckled with the upper cover to form a cavity, and the image sensor is aligned with the open top of the upper cover. The motor structure in this application only is used for driving image sensor motion, sets up upper cover and lower cover lock and forms the cavity that holds image sensor and actuating mechanism for motor structure in this application can keep relatively independent state, directly installs the lens subassembly in the top of upper cover, and the lens is aimed at image sensor surface. In addition, based on the independence of the motor structure in the application, the lens component with different specifications can be matched for use.
Furthermore, the surface of the movable part is fixedly connected with an image sensor, the center of the image sensor and the center of gravity of the movable part are located on the same vertical line, and the elastic sponge is connected with the movable part and the lower cover and is located on the vertical line.
The beneficial effect of this application is: according to the image sensor, the elastic sponge connected with the shell is arranged at the bottom of the flexible circuit board used for mounting the image sensor and synchronously moving with the image sensor, so that the inertia effect of the image sensor during reset after moving is reduced, and the anti-shake movement of the image sensor is buffered; meanwhile, the elastic sponge made of special materials and having high heat conductivity coefficient can also construct a heat conduction channel from the flexible circuit board to the shell, so that the heat dissipation capacity of the motor is enhanced, and the working precision of internal parts of the motor is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic perspective view of the present application;
FIG. 2 is a schematic structural diagram of the present application after hiding the lens assembly and the upper cover;
FIG. 3 is a fully exploded schematic view of the present application;
fig. 4 is a schematic structural view of the lower cover, the elastic sponge, and the flexible circuit board in the present application.
In the figure: 1-lower cover; 2-elastic sponge; 3-a flexible circuit board; 301-a fixed part; 302-a resilient arm; 303-a movable part; 4-an image sensor; 5-a magnet; 6-a coil; 7-a coil support; 8-upper cover; 9-lens assembly.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Example 1:
a fixed focus motor structure based on sensor displacement technology as shown in fig. 1 and 4, comprising an image sensor 4, a driving mechanism for driving the image sensor 4 to move, and a housing for accommodating the image sensor 4 and the driving mechanism; the flexible circuit board 3 is arranged in the shell and used for mounting the image sensor 4, and the elastic sponge 2 connected with the shell is arranged on the bottom surface of the flexible circuit board 3.
The working principle is as follows:
fig. 4 is an exploded schematic view of a flexible circuit board 3, an elastic sponge 2 and a part of a housing, wherein one side of the flexible circuit board 3 is connected with the housing through the elastic sponge 2, and the other side of the flexible circuit board is fixed with an image sensor 4, when a driving mechanism drives the image sensor 4 to perform anti-shake motion, the part of the flexible circuit board 3 connected with the image sensor 4 moves along with the image sensor 4, and the elastic sponge 2 is pulled during the motion, because the material of the elastic sponge 2 has certain elasticity and elasticity, on one hand, the flexible circuit board 3 and the image sensor 4 can reset under the elastic force recovery action of the elastic sponge 2 after the motion is completed, and the elastic sponge 2 absorbs part of inertia of the reset motion of the flexible circuit board 3 and the image sensor 4, so as to provide buffer for the reset thereof and ensure the accuracy of anti-shake motion control; on the other hand, in order to solve the problem of heating of the internal mechanism of the shell, the elastic sponge can construct a heat conduction channel from the flexible circuit board to the shell, and the elastic sponge is a special sponge added with materials with higher heat conductivity coefficients such as graphite and the like instead of a common sponge with extremely low heat conductivity coefficients, so that the heat dissipation capacity of the motor is enhanced, and the working precision of internal parts of the motor is guaranteed.
Example 2:
this example is further optimized and defined based on example 1.
As shown in fig. 1 to 4, the driving mechanism includes a coil holder 7 fixedly connected to the image sensor 4, a coil 6 fixedly mounted on the coil holder 7, and a plurality of magnets 5 distributed around the coil 6. The flexible circuit board 3 includes a fixed portion 301 fixedly connected to the housing and a movable portion 303 for mounting the image sensor 4, and the movable portion 303 is movably connected to the movable portion 303 through an elastic arm 302. The shell comprises an upper cover 8 with an open top center and a lower cover 1 buckled with the upper cover 8 to form a cavity, and the image sensor 4 is aligned with the open top of the upper cover 8. The surface of the movable part 303 is fixedly connected with an image sensor 4, the center of the image sensor 4 and the gravity center of the movable part 303 are located on the same vertical line, and the elastic sponge 2 is connected with the movable part 303 and the lower cover 1 and is located on the vertical line.
As shown in fig. 1, which is a schematic view of the overall structure of the motor structure and the lens assembly 9 in the present application after being engaged, the lens assembly 9 is installed above the housing, the magnet 5 in the driving mechanism is fixed in the housing, the coil 6 is fixedly connected to the image sensor 4 through the coil support 7, and the coil 6 is forced to drive the coil support 7 and the image sensor 4 to move by the interaction between the magnetic field generated by the coil 6 after being energized and the magnet 5. The flexible circuit board 3 provides necessary installation conditions for the movement of the image sensor 4 in the housing, specifically, the flexible circuit board 3 is composed of a fixed part 301, an elastic arm 302 and a movable part 303, the fixed part 301 is fixedly connected with the housing to ensure that the movable range of the image sensor 4 is controllable, and the elastic arm 302 enables the movable part 303 to be movably connected relative to the fixed part 301 by using the shape and elasticity of the elastic arm 302. According to the existing flexible circuit board 3, the flexible circuit board 3 composed of a plurality of layers of polymer and conductive metal can be directly used, and the elastic arm 302 is formed by cutting after directly removing the polymer layer.
It should be noted that the motor structure in this application is only used for driving the image sensor 4 to move, and the upper cover 8 and the lower cover 1 are arranged to be buckled to form a cavity for accommodating the image sensor 4 and the driving mechanism, so that the motor structure in this application can keep a relatively independent state, and the lens assembly 9 can be directly mounted above the upper cover 8 to form a complete camera module, where the lens assembly 9 can be an independent lens group as shown in fig. 1, and can be directly mounted above the motor structure to form an optical anti-shake lens that cannot adjust the focal length, or can be a lens assembly 9 that is formed by a lens and a motor for driving the lens to move axially to adjust the focal length. In addition, based on the independence of the motor structure in the application, the lens assembly 9 with different specifications can be matched for use.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (5)
1. A fixed focus motor structure based on sensor displacement technology comprises an image sensor (4), and is characterized in that: the device also comprises a driving mechanism for driving the image sensor (4) to move, and a shell for accommodating the image sensor (4) and the driving mechanism; the image sensor is characterized in that a flexible circuit board (3) used for mounting an image sensor (4) is arranged in the shell, and an elastic sponge (2) connected with the shell is arranged on the bottom surface of the flexible circuit board (3).
2. The fixed focus motor structure based on the sensor displacement technology as claimed in claim 1, wherein: the driving mechanism comprises a coil support (7) fixedly connected with the image sensor (4), a coil (6) fixedly installed on the coil support (7), and a plurality of magnets (5) distributed around the coil (6).
3. The fixed focus motor structure based on the sensor displacement technology as claimed in claim 2, wherein: the flexible circuit board (3) comprises a fixed part (301) fixedly connected with the shell and a movable part (303) used for installing the image sensor (4), and the movable part (303) is movably connected with the movable part (303) into a whole through an elastic arm (302).
4. The fixed focus motor structure based on the sensor displacement technology as claimed in claim 3, wherein: the shell comprises an upper cover (8) with an open top center and a lower cover (1) buckled with the upper cover (8) to form a cavity, and the image sensor (4) is aligned with the open top of the upper cover (8).
5. The fixed focus motor structure based on the sensor displacement technology as claimed in claim 3, wherein: the surface of the movable part (303) is fixedly connected with an image sensor (4), the center of the image sensor (4) and the gravity center of the movable part (303) are located on the same vertical line, and the elastic sponge (2) is connected with the movable part (303) and the lower cover (1) and is located on the vertical line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121764601.1U CN215453078U (en) | 2021-07-30 | 2021-07-30 | Fixed focus motor structure based on sensor displacement technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121764601.1U CN215453078U (en) | 2021-07-30 | 2021-07-30 | Fixed focus motor structure based on sensor displacement technology |
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| CN215453078U true CN215453078U (en) | 2022-01-07 |
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| CN202121764601.1U Active CN215453078U (en) | 2021-07-30 | 2021-07-30 | Fixed focus motor structure based on sensor displacement technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114422681A (en) * | 2022-01-27 | 2022-04-29 | 苏州昀冢电子科技股份有限公司 | Driving mechanism, driving mechanism combination, camera module and electronic equipment |
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2021
- 2021-07-30 CN CN202121764601.1U patent/CN215453078U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114422681A (en) * | 2022-01-27 | 2022-04-29 | 苏州昀冢电子科技股份有限公司 | Driving mechanism, driving mechanism combination, camera module and electronic equipment |
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Effective date of registration: 20240124 Address after: Room 301, Building 2, No. 88 Shengtong Street, Chengdu High tech Zone, China (Sichuan) Pilot Free Trade Zone, Chengdu City, Sichuan Province, 610000 Patentee after: Guoxing Chaogan (Chengdu) Optoelectronic Technology Co.,Ltd. Country or region after: China Address before: No.2, Qingyun North Road, Jinhua Town, Xinjin County, Chengdu, Sichuan 610000 Patentee before: Chengdu Yixun Photoelectric Technology Co.,Ltd. Country or region before: China |