Anti-shake structure and image pickup apparatus

Abstract

The utility model discloses an anti-shake structure and camera shooting equipment, and relates to the technical field of lens anti-shake, the anti-shake structure comprises a bottom plate, a cover plate, a moving group, a driving mechanism, an electric control device and at least one tension spring, the driving mechanism comprises a plurality of magnetic driving assemblies for driving the moving group to move, a position detection part in an electric control device is arranged in an area on the outer side of a driving coil, a detection magnet is arranged on a bottom plate and is arranged corresponding to the position detection part, and the position detection part is located in a magnetic field generated by the detection magnet, so that the position detection part and the detection magnet are separated from each other. The moving group is not interfered by a magnetic field generated by the magnet, the displacement can be accurately fed back, and the mounting seat is connected with the bottom plate or the cover plate through at least one tension spring, so that the moving group can only move or rotate along the longitudinal direction and / or the transverse direction, and the moving group is prevented from swinging in the axial direction of the lens; the high-precision anti-shake structure can cover various application scenes and can accurately compensate displacement deviation.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-shake, in particular to an anti-shake structure and a camera device. Background Art

[0002] In the fields of digital cameras, car lenses, surveillance lenses, etc., in many cases, optical devices will vibrate. The shaking of the lens will cause the picture to shake, and it is impossible to capture a clear image. For cameras, the anti-shake when taking pictures is divided into optical image stabilization and electronic image stabilization. Optical image stabilization is a technology that adjusts the position of the lens or sensor to offset the image blur caused by camera shaking. The optical image stabilization system usually uses mechanical devices or moving elements around the camera lens or sensor to adjust the position of the lens or sensor in real time when the camera shakes to keep the image stable. Sensor image stabilization is a technology that uses the internal information of the image sensor to detect camera shake or movement and offset image shake by adjusting the pixel position on the sensor. Sensor image stabilization does not involve physical movement of the lens or sensor, but relies on image processing algorithms to process image data to achieve image stabilization. The specific principle is to detect the slight movement of the camera through the gyroscope in the lens, and then transmit the information to the processor, which calculates the amount to be compensated and uses optical compensation to correct the shake. The lens moves in the opposite direction to compensate for the amount of picture shake, so that the optical path changes and the image is consistent with the picture before the shake. Utility Model Content

[0003] The main purpose of the utility model is to propose an anti-shake structure and a camera device, aiming to provide a high-precision anti-shake structure that can cover a variety of application scenarios and can accurately compensate for displacement deviations.

[0004] In order to achieve the above-mentioned object, the utility model proposes an anti-shake structure for a lens, the anti-shake structure comprising:

[0005] Base plate;

[0006] A cover plate, arranged on one side of the bottom plate;

[0007] A moving group is movably disposed between the bottom plate and the cover plate, and is spaced apart from the bottom plate and the cover plate. The moving group includes a mounting seat and a photosensitive chip mounted on the mounting seat.

[0008] The driving mechanism comprises at least three magnetic driving components, one of which is used to drive the moving group to move in the lateral direction, and the other two magnetic driving components are arranged at intervals in the lateral direction and are used to drive the moving group to move in the longitudinal direction, each of the magnetic driving components comprises two magnets arranged on the bottom plate and the cover plate and arranged opposite to each other, and a driving coil arranged on the mounting seat and located between the two magnets, and the three driving coils are arranged in parallel so as to be independently controlled;

[0009] The electric control device comprises a position detection device, wherein the position detection device comprises a position detection part and a detection magnet, wherein the position detection part is fixed to the mounting seat and is located in the area outside the driving coil, and the detection magnet is arranged on the bottom plate and is arranged corresponding to the position detection part; and

[0010] At least one tension spring, one end of which is connected to the mounting seat, and the other end of which is connected to the bottom plate or the cover plate.

[0011] Optionally, the mounting seat is provided with a plurality of mounting holes, each of which is used for mounting the corresponding driving coil;

[0012] The electronic control device also includes a photosensitive element soft row, which has a connecting row segment. The connecting row segment is located on the side of the mounting hole facing the base plate and is connected to the driving coil. The position detection unit is provided on the side of the connecting row segment facing the base plate.

[0013] Optionally, the detection magnet includes a first detection magnet and two second detection magnets spaced apart in the transverse direction, the first detection magnet is located on one side of the two second detection magnets in the longitudinal direction, and correspondingly, the position detection unit includes a plurality of position detection elements, the plurality of position detection elements include a first position detection element and two second position detection elements spaced apart in the transverse direction, the first position detection element is located on one side of the two second position detection elements in the longitudinal direction, the first position detection element is arranged corresponding to the first detection magnet, and the two second position detection elements are respectively arranged corresponding to the two second detection magnets.

[0014] In one embodiment, the tension spring is disposed between the mounting seat and the base plate;

[0015] The anti-shake structure further includes a plurality of rolling parts, each of which is padded between the mounting seat and the bottom plate.

[0016] In one embodiment, a mounting arm is provided on the mounting seat, the mounting arm extends toward a side away from the bottom plate, and a first connecting portion for connecting a hook and loop at one end of the tension spring is provided on the mounting arm;

[0017] The cover plate is provided with a clearance groove, and the installation arm is passed through the clearance groove;

[0018] The bottom plate is provided with a second connection portion for connecting the hook ring at the other end of the tension spring.

[0019] In one embodiment, a plurality of the tension springs are provided, and the plurality of tension springs are arranged at intervals along the circumference of the mounting seat.

[0020] In one embodiment, each of the driving coils includes two sides that are arranged opposite to each other;

[0021] Each of the magnets includes two magnetic strips respectively arranged corresponding to the two side edges of the driving coil, so as to form a magnetic circuit gap between the two magnetic strips respectively arranged on the bottom plate and the cover plate and arranged opposite to each other, and the two side edges of the driving coil are respectively arranged in the corresponding magnetic circuit gaps.

[0022] In one embodiment, the anti-shake structure further includes a plurality of limit posts arranged at intervals along the circumference of the bottom plate, and two ends of each of the limit posts are respectively fixed to the bottom plate and the cover plate;

[0023] The mounting seat is arranged on the inner side of the plurality of limiting columns, and a plurality of notches are arranged on the periphery of the mounting seat. The plurality of notches are arranged corresponding to the plurality of limiting columns respectively, so that when the mounting seat moves horizontally or vertically, the plurality of limiting columns can limit the movement of the mounting seat.

[0024] In one embodiment, the material of the bottom plate and / or the cover plate is set to be a magnetic material; and / or

[0025] Each of the magnets is bonded to the corresponding bottom plate or cover plate.

[0026] The utility model also provides a camera device, the camera device includes an anti-shake structure, the anti-shake structure includes:

[0027] Base plate;

[0028] A cover plate, arranged on one side of the bottom plate;

[0029] A moving group is movably disposed between the bottom plate and the cover plate, and is spaced apart from the bottom plate and the cover plate. The moving group includes a mounting seat and a photosensitive chip mounted on the mounting seat.

[0030] The driving mechanism comprises at least three magnetic driving components, one of which is used to drive the moving group to move in the lateral direction, and the other two magnetic driving components are arranged at intervals in the lateral direction and are used to drive the moving group to move in the longitudinal direction, each of the magnetic driving components comprises two magnets arranged on the bottom plate and the cover plate and arranged opposite to each other, and a driving coil arranged on the mounting seat and located between the two magnets, and the three driving coils are arranged in parallel so as to be independently controlled;

[0031] The electric control device comprises a position detection device, wherein the position detection device comprises a position detection part and a detection magnet, wherein the position detection part is fixed to the mounting seat and is located in the area outside the driving coil, and the detection magnet is arranged on the bottom plate and is arranged corresponding to the position detection part; and

[0032] At least one tension spring, one end of which is connected to the mounting seat, and the other end of which is connected to the bottom plate or the cover plate.

[0033] In the technical solution provided by the utility model, when the driving coil used to drive the mobile group to move in the lateral direction is energized, compensation of the mobile group in the lateral direction is achieved; when at least one of the driving coils used to drive the mobile group to move in the longitudinal direction is energized, compensation of the mobile group in the longitudinal direction is achieved. Because the two magnetic driving components arranged at intervals in the lateral direction can both drive the mobile group to move in the longitudinal direction, by controlling the current directions of the two driving coils, it is possible to control whether the directions of the driving forces generated by the two magnetic driving components are the same or opposite. When the directions of the driving forces generated by the two magnetic driving components are the same, the mobile group can move in the longitudinal direction; when the directions of the driving forces generated by the two magnetic driving components are opposite, the mobile group can rotate. The present application can not only correct jitter in the lateral and longitudinal directions by optical compensation methods, but also rotate to correct jitter in the circumferential rotation direction. The anti-shake structure can be applied not only to optical anti-shake technology, but also to sensor anti-shake technology. In addition, the position detection part is fixedly mounted on the mounting seat and is arranged in the area outside the driving coil. The detection magnet is arranged on the base plate and is arranged corresponding to the position detection part. Since the position detection part is in the magnetic field generated by the detection magnet and is offset from the magnet, it is not disturbed by the magnetic field where the driving coil is located, and can accurately feedback the displacement. By connecting the mounting seat to the base plate or the cover plate through at least one tension spring, the moving group can only rotate in the longitudinal direction, transverse direction or the plane in which it is located, thereby avoiding the possibility of the moving group swaying in the axial direction of the lens, so as to provide a high-precision anti-shake structure that can cover a variety of application scenarios and accurately compensate for displacement deviations. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0035] Figure 1 A three-dimensional schematic diagram of an embodiment of an anti-shake structure provided by the utility model;

[0036] Figure 2 for Figure 1 A three-dimensional schematic diagram of the anti-shake structure from another perspective;

[0037] Figure 3 for Figure 1 A three-dimensional schematic diagram of a base plate, a magnet and a detection magnet;

[0038] Figure 4 for Figure 1 A three-dimensional schematic diagram of the mobile group and the driving coil in FIG.

[0039] Figure 5 for Figure 4 A three-dimensional schematic diagram from another perspective;

[0040] Figure 6 for Figure 1 Schematic diagram of the cover and magnet in FIG.

[0041] Description of Figure Numbers:

[0042] 100 anti-shake structure; 1 bottom plate; 11 second connecting part; 2 cover plate; 2a give way groove; 3 moving group; 31 mounting seat; 311 mounting arm; 3111 first connecting part; 31a receiving groove; 31b mounting hole; 31c notch; 32 photosensitive chip; 4 magnetic drive component; 41 magnet; 411 magnetic strip; 42 driving coil; 421 side; 5 rolling part; 6 electric control device; 611 first detection magnet; 612 second detection magnet; 621 first position detection element; 622 second position detection element; 63 photosensitive element soft row; 631 connecting row segment; 71 limiting column; 72 buffer sleeve; 10 tension spring.

[0043] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0046] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0047] In the fields of digital cameras, car lenses, surveillance lenses, etc., optical equipment will vibrate in many cases. The shaking of the lens will cause the picture to shake, and it is impossible to capture a clear image. For cameras, the anti-shake when taking pictures is divided into optical anti-shake and electronic anti-shake. In principle, the gyroscope in the lens detects the slight movement of the camera, and then transmits the information to the processor, which calculates the amount to be compensated and uses optical compensation to correct the shake. The lens moves in the opposite direction to compensate for the amount of picture shake, so that the optical path changes and the image is consistent with the picture before the shake. The lens anti-shake in the prior art has a complex structure, slow response, high power consumption, and also causes the overall size and weight of the lens to be large, which is not suitable for complex and precise lens optical systems.

[0048] In order to solve the above problems, the utility model provides an anti-shake structure. Figure 1 A three-dimensional schematic diagram of an embodiment of an anti-shake structure provided by the utility model; Figure 2 for Figure 1 A three-dimensional schematic diagram of the anti-shake structure from another perspective; Figure 3 for Figure 1 A three-dimensional schematic diagram of a base plate, a magnet and a detection magnet; Figure 4 for Figure 1 A three-dimensional schematic diagram of the mobile group and the driving coil in FIG. Figure 5 for Figure 4 A three-dimensional schematic diagram from another perspective; Figure 6 for Figure 1 Schematic diagram of the cover and magnet in FIG.

[0049] See also Figures 3 to 6 The anti-shake structure 100 includes a base plate 1, a cover plate 2, a moving group 3, a driving mechanism, an electric control device 6 and at least one tension spring 10, wherein the cover plate 2 is arranged on one side of the base plate 1; the moving group 3 is movably arranged between the base plate 1 and the cover plate 2, and is spaced apart from the base plate 1 and the cover plate 2, the moving group 3 includes a mounting seat 31, and a photosensitive chip 32 mounted on the mounting seat 31; the driving mechanism includes at least three magnetic driving components 4, wherein one of the magnetic driving components 4 is used to drive the moving group 3 to move horizontally, and the other two magnetic driving components 4 are spaced apart in the horizontal direction, and are both used to drive the moving group 3 to move longitudinally, each of the magnetic driving components 4 is spaced apart in the horizontal direction, and are both used to drive the moving group 3 to move longitudinally, The magnetic drive component 4 includes two magnets which are arranged opposite to each other on the base plate 1 and the cover plate 2, and a drive coil 42 which is arranged on the mounting seat 31 and located between the two magnets, and the three drive coils 42 are arranged in parallel so as to be independently controlled; the electric control device 6 includes a position detection device, which includes a position detection part and a detection magnet, the position detection part is fixed to the mounting seat 31 and is located in the area outside the drive coil 42, the detection magnet is arranged on the base plate 1 and is arranged corresponding to the position detection part, one end of the tension spring 10 is connected to the mounting seat 31, and the other end is connected to the base plate 1 or the cover plate 2.

[0050] It should be noted that the magnetic drive component 4 realizes driving in the following manner: the drive coil 42 is placed between two magnets that are arranged oppositely, and the polarities of the two magnets that are close to each other are set to be opposite, so that a magnetic field perpendicular to the drive coil 42 is generated. According to the left-hand rule, the left hand is placed in the magnetic field so that the directions of the four fingers are consistent with the direction of the current in the wire, and the direction pointed by the thumb is the direction of the force. Therefore, the movement direction of the drive coil 42 is related to the direction of the current. When the drive coil 42 is passed with currents in different directions, the drive coil 42 can be moved in the horizontal direction or in the positive and negative directions in the vertical direction, thereby driving the mounting seat 31 to drive the photosensitive chip 32 to adjust and move, thereby achieving compensation.

[0051] It can be understood that, in the magnetic drive component 4 for driving the mobile group 3 to move horizontally, the drive coil 42 thereof has a straight wire extending along the longitudinal direction, and when the drive coil 42 is energized, according to the left-hand rule, an Ampere force in the longitudinal direction can be generated; in the magnetic drive component 4 for driving the mobile group 3 to move longitudinally, the drive coil 42 thereof has a straight wire extending along the longitudinal direction, and when the drive coil 42 is energized, according to the left-hand rule, an Ampere force in the longitudinal direction can be generated.

[0052] Since the two magnetic drive components 4 arranged at intervals in the transverse direction can both drive the mobile group 3 to move in the longitudinal direction, by controlling the current directions of the two drive coils 42, it is possible to control whether the directions of the driving forces generated by the two magnetic drive components 4 are the same or opposite. When the directions of the driving forces generated by the two magnetic drive components 4 are the same, the mobile group 3 can move in the longitudinal direction. When the directions of the driving forces generated by the two magnetic drive components 4 are opposite, the mobile group 3 can rotate.

[0053] It should also be noted that the photosensitive chip 32 can be set as CMOS or CCD. The "horizontal" and "vertical" referred to in this application document only express two directions that intersect at about 90 degrees. When the anti-shake structure 100 shown in the figure is rotated 90 degrees, the magnetic drive component 4 in the "horizontal" direction can be described as the magnetic drive component 4 in the "vertical" direction. Therefore, the layout of the magnetic drive component 4 is not limited to the above-mentioned one form.

[0054] In another embodiment, in order to realize the rotation of the mobile group 3, two magnetic drive components 4 for driving the mobile group 3 to move horizontally can be arranged at intervals in the longitudinal direction. When the two magnetic drive components 4 are energized to generate reverse lateral forces, they can also drive the mobile group 3 to rotate.

[0055] In another embodiment, the number of the plurality of magnetic drive components 4 can be four, or even more. The four magnetic drive components 4 can be arranged two at intervals in the horizontal direction and two at intervals in the vertical direction. The two magnetic drive components 4 arranged at intervals in the vertical direction or in the horizontal direction can be arranged side by side in the same straight line or staggered.

[0056] The two magnetic drive components 4 for driving the mobile group 3 to move horizontally can be arranged on the same side, or can be arranged on both sides of the base plate 1 that are opposite to each other in the horizontal or vertical direction. Of course, the number of the multiple magnetic drive components 4 is not limited to the above examples, and the arrangement of the multiple magnetic drive components 4 is not limited to the above examples. Technicians in the relevant field may make other changes under the inspiration of the technical essence of the embodiments of this specification, but as long as the functions and effects achieved are the same or similar to the embodiments of this specification, they should be covered within the protection scope of the embodiments of this specification.

[0057] It should be noted that, since the moving group 3 is arranged between the cover plate 2 and the base plate 1 and is driven by magnetic force, when there is a large gap between the mounting seat 31 and the cover plate 2 or the base plate 1, the moving group 2 may sway in the axial direction of the lens, thereby affecting the compensation distance and angle in the horizontal and / or vertical direction. By connecting the mounting seat 31 to the base plate 1 or the cover plate 2 through at least one tension spring 10, the mounting seat 31 can be attached to one side of the base plate 1, or to one side of the cover plate 2, and rotate in the vertical, horizontal or plane thereof.

[0058] It should also be noted that in the prior art, optical image stabilization is generally used to offset the adverse effects of camera shake by adjusting the longitudinal and lateral positions of the lens. Therefore, the anti-shake structure 100 involved in the prior art only involves adjustments in two dimensions.

[0059] In the technical solution provided by the present utility model, when the driving coil 42 for driving the mobile group 3 to move in the lateral direction is energized, the compensation of the mobile group 3 in the lateral direction is achieved; when at least one of the driving coils 42 for driving the mobile group 3 to move in the longitudinal direction is energized, the compensation of the mobile group 3 in the longitudinal direction is achieved. Because the two magnetic driving components 4 arranged at intervals in the lateral direction can both drive the mobile group 3 to move in the longitudinal direction, by controlling the current directions of the two driving coils 42, it is possible to control whether the directions of the driving forces generated by the two magnetic driving components 4 are the same or opposite. When the directions of the driving forces generated by the two magnetic driving components 4 are the same, the mobile group 3 can move in the longitudinal direction; when the directions of the driving forces generated by the two magnetic driving components 4 are opposite, the mobile group 3 can rotate. The present application can not only correct jitter in the lateral and longitudinal directions by optical compensation methods, but also rotate to correct jitter in the circumferential rotation direction. The anti-shake structure 100 can be applied not only to optical anti-shake technology, but also to sensor anti-shake technology. In addition, the position detection part is fixedly mounted on the mounting seat 31 and is arranged in the area outside the driving coil 42. The detection magnet is arranged on the base plate 1 and is arranged corresponding to the position detection part. Since the position detection part is in the magnetic field generated by the detection magnet and is offset from the magnet, it is not disturbed by the magnetic field of the driving coil 42 and can accurately feedback the displacement. By connecting the mounting seat 31 to the base plate 1 or the cover plate 2 through at least one tension spring 10, the moving group 3 can only rotate in the longitudinal direction, transverse direction or the plane in which it is located, thereby avoiding the possibility of the moving group 3 shaking in the axial direction of the lens, so as to provide a high-precision anti-shake structure 100 that can cover a variety of application scenarios and can accurately compensate for displacement deviations.

[0060] Specifically, in this embodiment, the mounting seat 31 is provided with a plurality of mounting holes 31b, each of which is provided for the installation of the corresponding driving coil 42; the electronic control device 6 also includes a photosensitive element soft row 63, and the photosensitive element soft row 63 has a connecting row segment 631, which is located on the side of the mounting hole 31b facing the base plate 1 and is connected to the driving coil 42, and the position detection part is provided on the side of the connecting row segment 631 facing the base plate 1.

[0061] The position detection unit is in the magnetic field generated by the corresponding detection magnet. When the lens shakes, the moving group 3 moves relative to the base plate 1 and the cover plate 2. The strength of the magnetic field around the position detection unit in the magnetic field will change. The change in the magnetic field will generate a corresponding voltage signal. The relative displacement between objects can be calculated by processing and analyzing the output voltage signal. With this arrangement, the position detection unit can be in the magnetic field generated by the detection magnet at a close distance, and the position detection unit can sensitively reflect the changes in the strength of the surrounding magnetic field, thereby achieving accurate measurement.

[0062] Specifically, the detection magnet includes a first detection magnet 611 and two second detection magnets 612 arranged at intervals in the horizontal direction, the first detection magnet 611 is located on the side of the two second detection magnets 612 in the vertical direction, and correspondingly, the position detection unit includes a plurality of position detection elements, the plurality of position detection elements include a first position detection element 621 and two second position detection elements 622 arranged at intervals in the horizontal direction, the first position detection element 621 is located on the side of the two second position detection elements 622 in the vertical direction, the first position detection element 621 is arranged corresponding to the first detection magnet 611, and the two second position detection elements 622 are arranged corresponding to the two second detection magnets 612. In this way, the first position detection element 621 can accurately detect the displacement of the mobile group 3 in the horizontal direction, each of the second position detection elements 622 can accurately detect the displacement of the mobile group 3 in the vertical direction, and when the mobile group 3 rotates, the two second position detection elements 622 can accurately detect the rotation angle of the mobile group 3.

[0063] It should be noted that the position detection element can be set as a Hall element or TMR (tunnel magnetoresistance), etc. Of course, other possible detection elements can also be used. The specific ones can be determined according to actual conditions, and the embodiments of this specification do not limit this.

[0064] Furthermore, since the driving coil 42 is disposed between the two magnets 41, in order to avoid direct contact between the driving coil 42 and the two magnets 41 to generate friction, there is a certain gap between the two magnets 41 of the driving coil 42. In this way, the driving coil 42 is equivalent to being suspended between the two magnets 41, and there is a possibility of instability during movement. In order to ensure the stability of the movement of the mobile group 3 on the plane while reducing friction as much as possible, in this embodiment, the tension spring 10 is disposed between the mounting seat 31 and the bottom plate 1; the anti-shake structure 100 also includes a plurality of rolling parts 5, each of which is padded between the mounting seat 31 and the bottom plate 1. Preferably, three rolling parts 5 are provided, and the three rolling parts 5 form a plane, which can stably support the mounting seat 31 on the bottom plate 1. It should be noted that the rolling part 5 can be a ball, a roller or a roller. Preferably, it is set as a ball.

[0065] In this example, see Figure 4 The mounting seat 31 is provided with a receiving groove 31a on one side of the base plate 1, the receiving groove 31a opening toward the base plate 1. The rolling portion 5 can be accommodated in the receiving groove 31a, and the rolling portion 5 can at least partially protrude from the notch of the receiving groove 31a so that the rolling portion 5 can be abutted against the base plate 1.

[0066] In other embodiments, each rolling portion 5 may also be provided between the mounting seat 31 and the cover plate 2. This can also achieve the above-mentioned effect of ensuring the stability of the movement of the moving group 3 on the plane while reducing friction as much as possible.

[0067] Furthermore, in order to facilitate the installation of the tension spring 10, in the present embodiment, a mounting arm 311 is provided on the mounting seat 31, and the mounting arm 311 extends toward a side away from the base plate 1, and a first connecting portion 3111 is provided on the mounting arm 311 for connecting a hook and loop at one end of the tension spring 10; a clearance groove 2a is provided on the cover plate 2, and the clearance groove 2a is for the mounting arm 311 to pass through; and a second connecting portion 11 is provided on the base plate 1 for connecting a hook and loop at the other end of the tension spring 10. In order to realize the thinness and lightness of the anti-shake structure 100 and facilitate the miniaturization of the lens, the distance between the base plate 1 and the mounting seat 31 is set to be smaller. In the present application, the mounting arm 311 is set on the mounting seat 31, and the mounting arm 311 extends toward the side away from the base plate 1, so that the first connecting portion 3111 for installing the tension spring 10 is set away from the base plate 1. The tension spring 10 can have a larger space for elastic deformation, and it can also be easier to install and fix the hooks at both ends of the tension spring 10.

[0068] Furthermore, in the present embodiment, a plurality of tension springs 10 are provided, and the plurality of tension springs 10 are arranged at intervals along the circumference of the mounting seat 31 . Thus, by providing a plurality of tension springs 10 , the mounting seat 31 can be subjected to force more evenly and stably.

[0069] In this example, see Figure 3 and Figure 4 , each of the driving coils 42 includes two side edges 421 that are arranged opposite to each other; each of the magnets 41 includes two magnetic strips 411 that are arranged corresponding to the two side edges 421 of the driving coil 42, so as to form a magnetic circuit gap between the two magnetic strips 411 that are arranged opposite to each other and are respectively arranged on the bottom plate 1 and the cover plate 2, and the two side edges 421 of the driving coil 42 are respectively arranged in the corresponding magnetic circuit gap. In this way, by arranging four magnetic strips 411, two magnetic circuit gaps are formed, so that the two side edges 421 of each of the driving coils 42 are simultaneously in the magnetic fields of the two magnetic circuit gaps, thereby enhancing the driving force of the magnetic force drive of each of the driving coils 42, so that the moving group 3 can respond quickly to achieve compensation.

[0070] In this example, see Figure 3 and Figure 4 The anti-shake structure 100 further includes a plurality of limit posts 71 arranged at intervals along the circumference of the bottom plate 1, and the two ends of each limit post 71 are fixed to the bottom plate 1 and the cover plate 2 respectively; the mounting seat 31 is arranged on the inner side of the plurality of limit posts 71, and the periphery of the mounting seat 31 is provided with a plurality of notches 31c, and the plurality of notches 31c are respectively arranged corresponding to the plurality of limit posts 71, so that when the mounting seat 31 moves in the horizontal or vertical direction, the plurality of limit posts 71 can limit the movement of the mounting seat 31. In this way, when the moving group 3 shakes severely, the plurality of limit posts 71 limit the travel of the moving group 3.

[0071] Furthermore, in order to prevent the mounting seat 31 of the mobile group 3 from colliding with the limiting column 71 and generating a large impact force, in this embodiment, the anti-shake structure 100 further includes a buffer sleeve 72 sleeved on the limiting column 71. The buffer sleeve 72 is configured as a rubber sleeve, and of course, it can also be configured as a foam sleeve, etc., which can be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0072] In this embodiment, the material of the bottom plate 1 and / or the cover plate 2 is set to be a magnetic material; and / or, each of the magnets is bonded to the corresponding bottom plate 1 or the cover plate 2. In this way, the magnet can be directly fixed to the bottom plate 1 or the cover plate 2 by magnetic attraction. This makes the installation form and process simpler; at the same time, the material of the bottom plate 1 and / or the cover plate 2 is set to be a magnetic material, which can also increase the magnetic field strength, so that the driving coil 42 can better induce the generation of driving force.

[0073] Of course, in order to make the magnets more stably fixed on the bottom plate 1 and / or the cover plate 2, each magnet can also be bonded to the corresponding bottom plate 1 or the cover plate 2 by glue dispensing.

[0074] The utility model also provides a camera device, which can be a camera, a vehicle-mounted lens, etc. The camera device includes the above-mentioned anti-shake structure 100, and the camera device also includes a lens barrel and a lens, etc. Since the camera device includes the anti-shake structure 100, the specific structure of the anti-shake structure 100 refers to the above-mentioned embodiment. Since the anti-shake structure 100 of the camera device adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0075] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An anti-shake structure for a lens, characterized in that: The anti-shake structure comprises: Base plate; A cover plate, arranged on one side of the bottom plate; A moving group is movably disposed between the bottom plate and the cover plate, and is spaced apart from the bottom plate and the cover plate. The moving group includes a mounting seat and a photosensitive chip mounted on the mounting seat. The driving mechanism comprises at least three magnetic driving components, one of which is used to drive the moving group to move in the lateral direction, and the other two magnetic driving components are arranged at intervals in the lateral direction and are used to drive the moving group to move in the longitudinal direction, each of the magnetic driving components comprises two magnets arranged on the bottom plate and the cover plate and arranged opposite to each other, and a driving coil arranged on the mounting seat and located between the two magnets, and the three driving coils are arranged in parallel so as to be independently controlled; The electric control device comprises a position detection device, wherein the position detection device comprises a position detection part and a detection magnet, wherein the position detection part is fixed to the mounting seat and is located in the area outside the driving coil, and the detection magnet is arranged on the bottom plate and is arranged corresponding to the position detection part; and At least one tension spring, one end of which is connected to the mounting seat, and the other end of which is connected to the bottom plate or the cover plate.

2. The anti-shake structure according to claim 1, characterized in that: The mounting seat is provided with a plurality of mounting holes, each of which is used for mounting the corresponding driving coil; The electronic control device also includes a photosensitive element soft row, which has a connecting row segment. The connecting row segment is located on the side of the mounting hole facing the base plate and is connected to the driving coil. The position detection unit is provided on the side of the connecting row segment facing the base plate.

3. The anti-shake structure according to claim 1 or 2, characterized in that: The detection magnet includes a first detection magnet and two second detection magnets spaced apart in the transverse direction, the first detection magnet is located on one side of the two second detection magnets in the longitudinal direction, and correspondingly, the position detection unit includes a plurality of position detection elements, the plurality of position detection elements include a first position detection element and two second position detection elements spaced apart in the transverse direction, the first position detection element is located on one side of the two second position detection elements in the longitudinal direction, the first position detection element is arranged corresponding to the first detection magnet, and the two second position detection elements are respectively arranged corresponding to the two second detection magnets.

4. The anti-shake structure according to claim 1, characterized in that: The tension spring is arranged between the mounting seat and the bottom plate; The anti-shake structure further includes a plurality of rolling parts, each of which is padded between the mounting seat and the bottom plate.

5. The anti-shake structure according to claim 4, characterized in that: The mounting seat is provided with a mounting arm, the mounting arm extends toward a side away from the bottom plate, and the mounting arm is provided with a first connecting portion for connecting a hook ring at one end of the tension spring; The cover plate is provided with a clearance groove, and the installation arm is passed through the clearance groove; The bottom plate is provided with a second connection portion for connecting the hook ring at the other end of the tension spring.

6. The anti-shake structure according to claim 1, characterized in that: A plurality of tension springs are provided, and the plurality of tension springs are arranged at intervals along the circumference of the mounting seat.

7. The anti-shake structure according to claim 1, characterized in that: Each of the driving coils includes two side edges that are arranged opposite to each other; Each of the magnets includes two magnetic strips respectively arranged corresponding to the two side edges of the driving coil, so as to form a magnetic circuit gap between the two magnetic strips respectively arranged on the bottom plate and the cover plate and arranged opposite to each other, and the two side edges of the driving coil are respectively arranged in the corresponding magnetic circuit gaps.

8. The anti-shake structure according to claim 1, characterized in that: The anti-shake structure further includes a plurality of limit posts arranged at intervals along the circumference of the bottom plate, and two ends of each of the limit posts are respectively fixed to the bottom plate and the cover plate; The mounting seat is arranged on the inner side of the plurality of limiting columns, and a plurality of notches are arranged on the periphery of the mounting seat. The plurality of notches are arranged corresponding to the plurality of limiting columns respectively, so that when the mounting seat moves horizontally or vertically, the plurality of limiting columns can limit the movement of the mounting seat.

9. The anti-shake structure according to claim 1, characterized in that: The material of the bottom plate and / or the cover plate is set to be a magnetic material; and / or Each of the magnets is bonded to the corresponding bottom plate or cover plate.

10. A camera device, characterized in that: The invention comprises an anti-shake structure as claimed in any one of claims 1 to 9.

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