An anti-shake device, a camera module, and a terminal device

Abstract

The present invention discloses an anti-shake device, a camera module and a terminal device, relating to the technical field of cameras, and solves the technical problem that the anti-shake device in the prior art cannot perform rotational shake compensation. The anti-shake device includes a photosensitive component; and a coil-magnet driving structure; wherein, the photosensitive component is arranged on the coil-magnet driving structure and the coil-magnet driving structure can drive the photosensitive component to move after being powered on. The coil-magnet driving structure provided by the present invention can drive the photosensitive component arranged on the coil-magnet driving structure to move after being powered on. When the camera has shake, the coil-magnet driving structure can drive the photosensitive component to move in the direction opposite to the shake of the camera, so as to compensate for the shake of the camera, improve the clarity of the images captured by the camera, and can also effectively avoid the technical problems in the prior art that due to the increase in the weight of the lens and the insufficient driving force of the driving structure, the lens cannot be accurately driven to the shake compensation position.

Description

Technical Field

[0001] The present invention relates to the technical field of cameras, and more specifically, to an anti-shake device, a camera module, and a terminal device. Background Art

[0002] When a camera takes a picture, it is inevitable that jitter will occur, which will affect the clarity of the captured image. Therefore, a driving structure is provided in the camera to drive the lens to displace in the opposite direction to the camera jitter to achieve jitter compensation and increase the clarity of the camera shooting.

[0003] However, with the increasing requirements for pixels, the volume of the lens has to be made larger and larger, resulting in an increase in the weight of the lens, which leads to an increase in the driving force requirement for the driving structure. Naturally, the size of the driving structure is also getting larger and larger. In practice, the larger the driving structure is made, the higher the failure ratio of the camera reliability is. That is, there is a problem that the driving structure cannot accurately and timely drive the lens to the jitter compensation position due to insufficient driving force, and the increasing size of the driving structure also goes against the requirements of the camera. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to overcome the deficiencies of the prior art. In a first aspect, an anti-shake device is provided to solve the technical problem in the prior art that the driving structure drives the lens to prevent jitter, and as the weight of the lens increases, the driving force of the driving structure is insufficient, and the lens cannot be accurately and timely driven to the jitter compensation position.

[0005] The technical solution adopted by the present invention to solve this technical problem is:

[0006] An anti-shake device, comprising:

[0007] A photosensitive component; and,

[0008] A coil-magnet driving structure;

[0009] Wherein, the photosensitive component is disposed on the coil-magnet driving structure, and the coil-magnet driving structure can drive the photosensitive component to move after being powered on.

[0010] Optionally, the coil-magnet driving structure includes a base, a torsion driving component, and a first circuit board. The projection of the first circuit board is within the projection range of the base. The torsion driving component is located between the base and the first circuit board. The photosensitive component is disposed on the first circuit board. The torsion driving component drives the first circuit board to twist after being powered on to drive the photosensitive component to twist relative to the base.

[0011] Optionally, the torsion drive assembly includes a first magnetic assembly and a first coil assembly. The first magnetic assembly is fixedly connected to the base, the first coil assembly is connected to the first circuit board, and the projection of the first coil assembly is within the projection range of the first magnetic assembly.

[0012] Optionally, the first magnetic assembly includes a first magnetic member and a second magnetic member, and the first coil assembly includes a first coil and a second coil. The first magnetic member and the second magnetic member are spaced apart on the base. The first coil is close to the first magnetic member, and the second coil is close to the second magnetic member.

[0013] The projection of the first coil is within the projection range of the first magnetic member, and the projection of the second coil is within the projection range of the second magnetic member. By applying currents in different directions to the first coil and the second coil, the torsion drive assembly drives the first circuit board to twist, thereby driving the photosensitive assembly to twist relative to the base.

[0014] Optionally, the coil-magnet drive assembly further includes a translation drive assembly disposed between the base and the first circuit board. The translation drive assembly is spaced apart from the torsion drive assembly. When the translation drive assembly is powered on, it drives the first circuit board to translate, thereby driving the photosensitive assembly to translate relative to the base.

[0015] Optionally, the translation drive assembly includes a first translation drive assembly and a second translation drive assembly, and there is an included angle between the first translation drive assembly and the second translation drive assembly.

[0016] Optionally, the first translation drive assembly includes a third multi-pole magnet and a third coil. The third multi-pole magnet is disposed on the base, the third coil is disposed on the first circuit board, the third coil is close to the third multi-pole magnet, and the projection of the third coil is within the projection range of the third multi-pole magnet.

[0017] Optionally, the second translation drive assembly includes a fifth multi-pole magnet and a fifth coil. The fifth multi-pole magnet is disposed on the base, the fifth coil is disposed on the first circuit board, the fifth coil is close to the fifth multi-pole magnet, and the projection of the fifth coil is within the projection range of the fifth multi-pole magnet.

[0018] Optionally, a rolling assembly for supporting the first circuit board is provided between the base and the first circuit board.

[0019] Optionally, the rolling components are a plurality of ball bearings. The base and the first circuit board are provided with a plurality of oppositely opened limiting grooves. A ball bearing is provided between each set of the limiting grooves in a relative relationship. The spherical surfaces of the plurality of ball bearings are in contact with the base and the first circuit board simultaneously.

[0020] Optionally, the photosensitive component includes a photosensitive chip and a second circuit board. The second circuit board includes a placement portion and a side-standing structure. The placement portion is placed on the first circuit board. The side-standing structure is connected to the side wall of the placement portion, and the projection of the side-standing structure is located on the periphery of the projection of the base.

[0021] Optionally, an elastic member is provided between the first circuit board and the base. The first circuit board is reset by the elastic member.

[0022] In a second aspect, the present invention provides a camera module, including a lens and the above-mentioned anti-shake device. The image signal obtained by the lens is transmitted to the photosensitive component. The coil-magnet driving structure drives the photosensitive component to move to compensate for the shake of the camera module.

[0023] In a third aspect, the present invention provides a terminal device, including a main board and the above-mentioned anti-shake device or camera module. The anti-shake device or the camera module is connected to the main board.

[0024] Compared with the prior art, the beneficial effects of the anti-shake device provided by the present invention are as follows:

[0025] The coil-magnet driving structure provided by the present invention can drive the photosensitive component arranged on the coil-magnet driving structure to move after being powered on. When the camera shakes, the coil-magnet driving structure can drive the photosensitive component to move in the direction opposite to the shake of the camera to compensate for the shake of the camera and improve the clarity of the images captured by the camera. Moreover, even as the pixel increases and the volume and weight of the lens increase, since the coil-magnet driving structure drives the photosensitive component, the volume and weight of the photosensitive component do not change, thereby effectively avoiding the technical problem in the prior art that due to the increase in the weight of the lens, the driving force of the driving structure is insufficient and the lens cannot be accurately driven to the shake compensation position. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1Is an axonometric view of the base of the anti-shake device of the present invention;

[0028] Figure 2 Is an exploded view of a part of the anti-shake device of the present invention;

[0029] Figure 3 Is a top view of a part of the anti-shake device of the present invention;

[0030] Figure 4 Is an axonometric view of a part of the anti-shake device of the present invention;

[0031] Figure 5 Is an axonometric view of the second circuit board in the anti-shake device of the present invention;

[0032] Figure 6 Is an exploded view of the anti-shake device of the present invention;

[0033] Figure 7 Is an axonometric view of the anti-shake device of the present invention;

[0034] Figure 8 Is an exploded view of the camera module of the present invention;

[0035] Figure 9 Is a cross-sectional view of the camera module of the present invention;

[0036] Figure 10 Is an axonometric view of the camera module of the present invention.

[0037] In the figure:

[0038] 10 - Base, 11 - First baffle, 12 - Second baffle, 12a - First insertion slot, 12b - Second insertion slot, 13 - Third baffle, 14 - Fourth baffle, 14a - Third insertion slot, 14b - Fourth insertion slot, 15 - First placement groove, 16 - Second placement groove, 17 - Third placement groove, 18 - Fourth placement groove, 19 - Fifth placement groove, 20 - Sixth placement groove, 21 - First limiting groove, 22 - Second limiting groove, 23 - Third limiting groove, 24 - Fourth limiting groove;

[0039] 30 - First multipole magnet, 31 - Second multipole magnet, 32 - Third multipole magnet, 33 - Fourth multipole magnet, 34 - Fifth multipole magnet, 35 - Sixth multipole magnet;

[0040] 36 - First circuit board, 36a - First connection pin, 36b - Second connection pin, 36c - Fifth limiting groove, 36d - Sixth limiting groove, 36e - Seventh limiting groove, 36f - Eighth limiting groove;

[0041] 40 - Ball;

[0042] 50 - First elastic member, 51 - Second elastic member, 52 - Third elastic member, 53 - Fourth elastic member,

[0043] 60 - First coil, 61 - Second coil, 62 - Third coil, 63 - Fourth coil, 64 - Fifth coil, 65 - Sixth coil;

[0044] 70 - Position sensor;

[0045] 80 - Second circuit board, 81 - Placing portion, 81a - Seventh placing groove, 82 - First side - standing structure, 82a - First bending portion, 82b - First side body, 82c - Second bending portion, 82d - Second side body, 82e - First connecting flat plate, 83 - Second side - standing structure, 83a - Third bending portion, 82b - Third side body, 82c - Fourth bending portion, 82d - Fourth side body, 82e - Second connecting flat plate;

[0046] 85 - Third circuit board;

[0047] 90 - Photosensitive chip;

[0048] 100 - Fixed bracket;

[0049] 110 - Filter, 120 - Lens, 130 - Driving motor, 140 - Housing, 140a - Notch, 140b - Through - hole. Detailed implementation mode

[0050] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0051] Embodiment 1:

[0052] The present invention provides an anti - shake device. Referring to Figure 1 as shown, the anti - shake device includes a coil - magnet driving structure. The coil - magnet driving structure includes a base 10, and the base 10 includes but is not limited to a cubic shape. Four baffles are provided around the base 10, namely a first baffle 11, a second baffle 12, a third baffle 13 and a fourth baffle 14. The side walls of the first baffle 11, the second baffle 12, the third baffle 13 and the fourth baffle 14 are respectively fixed on the side walls around the base 10, and the lower end surfaces of the first baffle 11, the second baffle 12, the third baffle 13 and the fourth baffle 14 are in the same plane as the lower plate surface of the base 10, and the upper end surfaces of the first baffle 11, the second baffle 12, the third baffle 13 and the fourth baffle 14 are in the same plane.

[0053] Specifically, referring to Figure 1 As shown, two insertion slots are provided on the side wall of the second baffle 12, namely the first insertion slot 12a and the second insertion slot 12b. The distances from the first insertion slot 12a and the second insertion slot 12b to the upper plate surface of the base 10 are the same and parallel to the upper plate surface of the base 10; two insertion slots are also provided on the side wall of the fourth baffle 14, namely the third insertion slot 14a and the fourth insertion slot 14b. The distances from the third insertion slot 14a and the fourth insertion slot 14b to the upper plate surface of the base 10 are the same and parallel to the upper plate surface of the base 10. At the same time, the distance from the third insertion slot 14a to the upper plate surface of the base 10 is the same as the distance from the first insertion slot 12a to the upper plate surface of the base 10.

[0054] Referring to Figure 1 As shown, a plurality of placement grooves are provided on the upper plate surface of the base 10 near the periphery of each baffle. Specifically, the placement grooves include a first placement groove 15 provided on the upper plate surface of the base 10 near the first baffle 11, and a second placement groove 16 provided on the upper plate surface of the base 10 near the third baffle 13; among them, the first placement groove 15 and the second placement groove 16 are in a diagonal relationship, and the first placement groove 15 and the second placement groove 16 are of the same size and parallel to each other.

[0055] Referring to Figure 1 As shown, the placement grooves further include a third placement groove 17 provided on the upper plate surface of the base 10 near the first baffle 11 and spaced from the first placement groove 15, and a fourth placement groove 18 provided on the upper plate surface of the base 10 near the third baffle 13 and spaced from the second placement groove 16; among them, the third placement groove 17 and the fourth placement groove 18 are in a diagonal relationship, and the third placement groove 17 and the fourth placement groove 18 are of the same size and parallel to each other.

[0056] Referring to Figure 1 As shown, the placement grooves further include a fifth placement groove 19 provided on the upper plate surface of the base 10 near the second baffle 12, and a sixth placement groove 20 provided on the upper plate surface of the base 10 near the fourth baffle 14. The fifth placement groove 19 and the sixth placement groove 20 are parallel to each other and of the same size.

[0057] It should be noted that referring to Figure 1 As shown, the distances from the first placement groove 15 and the third placement groove 17 to the first baffle 11, the distances from the second placement groove 16 and the fourth placement groove 18 to the third baffle 13, the distance from the fifth placement groove 19 to the second baffle 12, and the distance from the sixth placement groove 20 to the fourth baffle 14 are all equal.

[0058] Referring to Figure 1As shown, four annular limiting grooves are evenly spaced at positions on the upper plate surface of the base 10 near the placement grooves, namely, the first limiting groove 21 near the first placement groove 15 and the sixth placement groove 20, the second limiting groove 22 near the third placement groove 17 and the fifth placement groove 19, the third limiting groove 23 near the fifth placement groove 19 and the second placement groove 16, and the fourth limiting groove 24 near the fourth placement groove 18 and the sixth placement groove 20. Among them, the four annular limiting grooves are of the same size.

[0059] Furthermore, the coil magnet driving structure further includes a torsion driving component and a translation driving component.

[0060] Specifically, referring to Figure 2 and Figure 3 As shown, the torsion driving component includes a first magnetic component and a first coil component. Among them, the first magnetic component includes a first multi-pole magnet 30 and a second multi-pole magnet 31. Of course, the first multi-pole magnet 30 and the second multi-pole magnet 31 can also be other magnetic components, such as, for example, an energized coil, etc. The volume of the first multi-pole magnet 30 is the same as the volume of the first placement groove 15, and the first multi-pole magnet 30 is placed in the first placement groove 15 in a clamped manner. The volume of the second multi-pole magnet 31 is the same as the volume of the second placement groove 16, and the second multi-pole magnet 31 is placed in the second placement groove 16 in a clamped manner. And, the upper end surfaces of the first multi-pole magnet 30 and the second multi-pole magnet 31 are flush with the upper plate surface of the base 10.

[0061] Referring to Figure 3 As shown, the translation driving component includes a first translation driving component. The first translation driving component includes a third multi-pole magnet 32 and a fourth multi-pole magnet 33. The volume of the third multi-pole magnet 32 is the same as the volume of the third placement groove 17, and the third multi-pole magnet 32 is placed in the third placement groove 17 in a clamped manner. The volume of the fourth multi-pole magnet 33 is the same as the volume of the fourth placement groove 18, and the fourth multi-pole magnet 33 is placed in the fourth placement groove 18 in a clamped manner. And, the upper end surfaces of the third multi-pole magnet 32 and the fourth multi-pole magnet 33 are flush with the upper plate surface of the base 10.

[0062] Referring to Figure 3 As shown, the translation driving component further includes a second translation driving component. The second translation driving component includes a fifth multi-pole magnet 34 and a sixth multi-pole magnet 35. The volume of the fifth multi-pole magnet 34 is the same as the volume of the fifth placement groove 19, and the fifth multi-pole magnet 34 is placed in the fifth placement groove 19 in a clamped manner. The volume of the sixth multi-pole magnet 35 is the same as the volume of the sixth placement groove 20, and the sixth multi-pole magnet 35 is placed in the sixth placement groove 20 in a clamped manner. And, the upper end surfaces of the fifth multi-pole magnet 34 and the sixth multi-pole magnet 35 are flush with the upper plate surface of the base 10.

[0063] Referring to Figure 2 and Figure 3As shown, the coil magnet driving structure further includes a first circuit board 36. The first circuit board 36 is a flexible circuit board, and the projection of the first circuit board 36 is within the projection range of the base 10. Two sets of connecting pins arranged side by side are provided on the upper board surface of the first circuit board 36, namely a first connecting pin 36a and a second connecting pin 36b. Among them, the first connecting pin 36a is close to the first baffle 11, the second connecting pin 36b is close to the third baffle 13, and the first connecting pin 36a and the second connecting pin 36b are parallel to each other. Multiple wires are also provided inside the first circuit board 36 and are respectively connected to the first connecting pin 36a and the second connecting pin 36b.

[0064] Referring to Figure 2 and Figure 3 As shown, four limiting grooves are formed on the board surface of the first circuit board 36 close to the base 10, namely a fifth limiting groove 36c corresponding to and having the same size as the first limiting groove 21, a sixth limiting groove 36d corresponding to and having the same size as the second limiting groove 22, a seventh limiting groove 36e corresponding to and having the same size as the third limiting groove 23, and an eighth limiting groove 36f corresponding to and having the same size as the fourth limiting groove 24.

[0065] Referring to Figure 2 and Figure 3 As shown, the coil magnet driving structure further includes a rolling component for supporting the first circuit board 36. The rolling component includes but is not limited to a number of ball bearings 40. For example, it can also be a number of glass balls or other spherical structures. Among them, ball bearings 40 are provided between the first limiting groove 21 and the fifth limiting groove 36c, between the second limiting groove 22 and the sixth limiting groove 36d, between the third limiting groove 23 and the seventh limiting groove 36e, and between the fourth limiting groove 24 and the eighth limiting groove 36f. Moreover, the spherical surface of the ball bearings 40 is in contact with the upper board surfaces of both the first circuit board 36 and the base 10 simultaneously.

[0066] It should be noted here that referring to Figure 2 and Figure 3 As shown, the first circuit board 36 is placed on the upper board surface of the base 10 through the ball bearings 40. The ball bearings 40 not only support the first circuit board 36 but also create a gap between the first circuit board 36 and the base 10, and can also reduce the friction when the first circuit board 36 moves. At the same time, it should be noted that there are gaps between the first circuit board 36 and the four baffles.

[0067] Referring to Figure 2 and Figure 3As shown, four elastic members are connected to the end face of the first circuit board 36 close to the base 10. The elastic members include but are not limited to springs, and can also be elastic sheets or leaf springs, etc. Specifically, the four elastic members are a first elastic member 50, a second elastic member 51, a third elastic member 52, and a fourth elastic member 53 respectively. Among them, one end of the first elastic member 50 and the second elastic member 51 is connected to one side of the first circuit board 36 close to the second baffle 12, and the other end of the first elastic member 50 is inserted into the first insertion slot 12a, and the other end of the second elastic member 51 is inserted into the second insertion slot 12b; one end of the third elastic member 52 and the fourth elastic are connected to one side of the first circuit board 36 close to the fourth baffle 14, and the other end of the third elastic member 52 is inserted into the third insertion slot 14a, and the other end of the fourth elastic member 53 is inserted into the fourth insertion slot 14b.

[0068] Further, referring to Figure 2 and Figure 3 As shown, the first coil assembly includes a first coil 60 and a second coil 61. Among them, the first coil 60 is fixedly connected to the first circuit board 36, at a position close to the first multipole magnet 30, and the projection of the first coil 60 is within the projection range of the first multipole magnet 30; the second coil 61 is fixedly connected to the first circuit board 36, at a position close to the second multipole magnet 31, and the projection of the first coil 60 is within the projection range of the first multipole magnet 30.

[0069] Referring to Figure 2 and Figure 3 As shown, the first translation assembly further includes a third coil 62 and a fourth coil 63. Among them, the third coil 62 is fixedly connected to the first circuit board 36, at a position close to the third multipole magnet 32, and the projection of the third coil 62 is within the projection range of the third multipole magnet 32; the fourth coil 63 is fixedly connected to the first circuit board 36, at a position close to the fourth multipole magnet 33, and the projection of the fourth coil 63 is within the projection range of the fourth multipole magnet 33.

[0070] Referring to Figure 2 and Figure 3 As shown, the second translation assembly further includes a fifth coil 64 and a sixth coil 65. Among them, the fifth coil 64 is fixedly connected to the first circuit board 36, at a position close to the fifth multipole magnet 34, and the projection of the fifth coil 64 is within the projection range of the fifth multipole magnet 34; the sixth coil 65 is fixedly connected to the first circuit board 36, at a position close to the sixth multipole magnet 35, and the projection of the sixth coil 65 is within the projection range of the sixth multipole magnet 35.

[0071] Of course, it should be noted that different coils are connected to different wires in the first circuit board 36, which will not be elaborated here. Moreover, position sensors 70 for detecting the positions of the coils are provided inside the coils of the first coil 60, the second coil 61, the third coil 62, and the fourth coil 63.

[0072] Referring to Figure 4 and Figure 5 As shown, the anti-shake device further includes a photosensitive component, and the photosensitive component includes a second circuit board 80 and a photosensitive chip 90. The second circuit board 80 is also a flexible circuit board, and the projection of the second circuit board 80 is located around the projection of the base 10. Specifically, the second circuit board 80 includes a placement portion 81 and a side-standing structure. The placement portion 81 includes, but is not limited to, a cuboid shape, and the placement portion 81 is coaxially arranged with the first circuit board 36. A seventh placement groove 81a is formed at the center position of the upper end face of the placement portion 81, that is, the end face away from the first circuit board 36, and two connection pins are also provided on the end face of the placement portion 81 close to the first circuit board 36 and are respectively connected to the first connection pin 36a and the second connection pin 36b of the first circuit board 36.

[0073] Referring to Figure 4 and Figure 5 As shown, the side-standing structure includes a first side-standing structure 82 and a second side-standing structure 83. The first side-standing structure 82 includes a first bending portion 82a, a first side body 82b, a second bending portion 82c, a second side body 82d, and a first connection flat plate 82e. One end of the first bending portion 82a is connected to the side wall of the placement portion 81 on the side close to the first baffle 11, and there is a gap between the first bending portion 82a and the first baffle 11. The other end of the first bending portion 82a is connected to the first side body 82b. The first side body 82b is perpendicular to the second circuit board 80 and parallel to the first baffle 11. The first side body 82b is connected to the second side body 82d through the second bending portion 82c. The second side body 82d is close to the second baffle 12 and parallel to the second baffle 12. One end of the second side body 82d close to the base 10 is connected to the first connection flat plate 82e, and the end face of the first connection flat plate 82e and the lower plate surface of the base 10 are in the same plane.

[0074] Referring to Figure 4 and Figure 5As shown, the second standing structure 83 includes a second bending portion 82c, a third side body 82b, a third bending portion 83a, a fourth side body 82d, and a second connecting flat plate 82e. One end of the second bending portion 82c is connected to the side wall of the placing portion 81 on the side close to the third baffle 13, and there is a gap between the third bending portion 83a and the third baffle 13. The other end of the third bending portion 83a is connected to the third side body 82b. The third side body 82b is perpendicular to the second circuit board 80 and parallel to the third baffle 13. The third side body 82b is connected to the fourth side body 82d through a fourth bending portion 82c. The fourth side body 82d is close to the fourth baffle 14 and parallel to the fourth baffle 14. One end of the fourth side body 82d close to the base 10 is connected to the second connecting flat plate 82e, and the end face of the second connecting flat plate 82e and the lower plate surface of the base 10 are in the same plane.

[0075] Further, referring to Figure 4 As shown, the photosensitive chip 90 is placed on the second circuit board 80 through the seventh placement groove 81a, is connected to the second circuit board 80, and the photosensitive chip 90 and the placing portion 81 are coaxially arranged.

[0076] Referring to Figure 6 and Figure 7 As shown, the anti-shake device further includes a third circuit board 85, and the third circuit board 85 is also a flexible circuit board. The lower plate surface of the base 10 is connected to the plate surface at one end of the third circuit board 85 by a method including but not limited to adhesion. And, the end face of the first connecting flat plate 82e is in contact with the plate surface of the third circuit board 85. Similarly, a plurality of wires are arranged in the third circuit board 85. The first standing structure 82 is connected to the wires in the third circuit board 85 through the first connecting flat plate 82e. The end face of the second connecting flat plate 82e is in contact with the plate surface of the third circuit board 85, and the second standing structure 83 is connected to the wires in the third circuit board 85 through the second connecting flat plate 82e.

[0077] Referring to Figure 6 and Figure 7 As shown, for the convenience of understanding the anti-shake device of the present invention, the following is hereby explained:

[0078] As is well known, magnetic fields can interact with each other. When a coil is energized, the phenomenon of electro-magnetic induction occurs to generate a magnetic field. If the coil is located in a magnetic field, then an interaction will occur between the energized coil and the magnetic field to generate a force.

[0079] When the camera using the anti-shake device shakes during shooting, the torsion drive component in the anti-shake device drives the imaging chip to twist relative to the base 10, and cooperates with the first translation drive component and the second translation drive component to drive the imaging chip to translate relative to the base 10, so that the imaging chip quickly moves to a position opposite to the camera shaking direction for shake compensation.

[0080] It can be understood that the rotation drive component and the translation drive component drive the photosensitive chip 90 to move by decomposing the drive displacement into displacements relative to the base 10 in the length directions of the third multi-pole magnet 32 and the fifth multi-pole magnet 34. By providing the first coil 60 and the second coil 61, the photosensitive chip 90 can be twisted relative to the base 10, increasing the rotation axis and providing more routes for the photosensitive chip 90 to perform jitter compensation movement, enabling the photosensitive chip 90 to be driven to the jitter compensation position more quickly and effectively, and significantly improving the anti-shake efficiency.

[0081] Specifically, the current flows through the third circuit board 85 and then into the first side-standing structure 82 and the second side-standing structure 83, then enters the placement part 81, and finally flows into the first circuit board 36. The current entering the first circuit board 36 can flow into the first coil 60, the second coil 61, the third coil 62, the fourth coil 63, the fifth coil 64, and the sixth coil 65. Then, a first force is generated between the first coil 60 and the first multi-pole magnet 30, a second force is generated between the second coil 61 and the second multi-pole magnet 31, a third force is generated between the third coil 62 and the third multi-pole magnet 32, a fourth force is generated between the fourth coil 63 and the fourth multi-pole magnet 33, a second force is generated between the fifth coil 64 and the fifth multi-pole magnet 34, and a sixth force is generated between the sixth coil 65 and the sixth multi-pole magnet 35.

[0082] Specifically, currents in different directions enter the first coil 60 and the second coil 61 respectively through the first circuit board 36, so that the first force acting on the first circuit board 36 generated between the first coil 60 and the first multi-pole magnet 30 and the second force acting on the first circuit board 36 generated between the second coil 61 and the second multi-pole magnet 31 are in opposite directions. It can be understood that opposite-direction forces are applied at the diagonal relationship positions of the first circuit board 36, then the first circuit board 36 will twist, and finally the photosensitive chip 90 is driven to twist. Of course, the twisting direction of the photosensitive chip 90 is opposite to the twisting direction of the camera.

[0083] At the same time, currents in the same direction enter the third coil 62 and the fourth coil 63, so that the third force acting on the first circuit board 36 generated between the third coil 62 and the third multi-pole magnet 32 and the fourth force acting on the first circuit board 36 generated between the fourth coil 63 and the fourth multi-pole magnet 33 are in the same direction. It can be understood that the third force and the fourth force can drive the first circuit board 36 to move in the length direction of the third multi-pole magnet 32, and finally drive the photosensitive chip 90 to move in the length direction of the third multi-pole magnet 32.

[0084] Meanwhile, currents in the same direction enter the fifth coil 64 and the sixth coil 65, such that the fifth acting force generated between the fifth coil 64 and the fifth multipole magnet 34 and acting on the first circuit board 36 and the sixth acting force generated between the sixth coil 65 and the sixth multipole magnet 35 and acting on the first circuit board 36 are in the same direction. It can be understood that the fifth acting force and the sixth acting force can drive the first circuit board 36 to move in the length direction of the fifth multipole magnet 34, and ultimately drive the photosensitive chip 90 to move in the length direction of the fifth multipole magnet 34.

[0085] Here, it should be noted that in this embodiment, by providing four elastic members, namely the first elastic member 50, the second elastic member 51, the third elastic member 52, and the fourth elastic member 53, after the currents in the multiple coils are disconnected, the first circuit board 36 can be reset to reset the photosensitive chip 90 to its initial position. When the anti-shake device is not in operation, the four elastic members are also responsible for stabilizing the position of the first circuit board 36 relative to the base 10, preventing the photosensitive chip 90 from moving when the anti-shake device is not working. That is to say, the four elastic members provided in this embodiment can reset the photosensitive chip 90 and at the same time stabilize the position of the photosensitive chip 90, achieving two goals with one action.

[0086] In addition, it should be noted that even if the first baffle 11, the second baffle 12, the third baffle 13, and the fourth baffle 14 for connecting the elastic members to the first circuit board 36 are not provided on the base 10, and elastic sheets including but not limited to those perpendicular to the base 10, such as leaf springs, are directly connected between the upper surface of the base 10 and the first circuit board 36, the first circuit board 36 can still be reset. At the same time, since the four baffles are eliminated, the volume of the anti-shake device can be reduced.

[0087] In this embodiment, it should be noted that the position sensor 70 provided can also detect the position of the photosensitive component relative to the base 10, providing a reference for further precisely controlling the movement of the photosensitive component and improving the movement accuracy of the coil-magnet drive structure for driving the photosensitive component.

[0088] In this embodiment, it should also be noted that by providing multiple placement slots for placing the multipole magnets, the volume of the anti-shake device can be effectively reduced.

[0089] In this embodiment, refer to Figure 7As shown, it should also be noted that the second circuit board 80 is driven to move when the anti-shake device works. In the existing anti-shake device, for the flexible circuit board connected to the anti-shake device, to avoid the flexible circuit board affecting anti-shake, usually the flexible circuit board is bent outside the base 10. However, when the anti-shake device drives the flexible circuit board to move in this way, the driving force wasted on the flexible circuit board is still relatively large. In this embodiment, through the side-standing structure provided on the second circuit board 80, the second circuit board 80 is arranged near the base 10, that is, the area where the base 10 is located and the area where the second circuit board 80 is located overlap, that is, the projection of the side-standing structure of the second circuit board 80 is on the four peripheries of the projection of the base 10. This can not only shorten the length of the second circuit board 80 and reduce the volume of the anti-shake device, but also reduce the force for driving the second circuit board 80 to move. That is to say, it is not difficult to understand that one end of the flexible circuit board in the prior art is directly connected to the anti-shake device, and the driving force for the driving structure to drive the flexible circuit board to move is undoubtedly greater than the force for driving the first side-standing connection structure and the second side-standing structure 83 in this embodiment.

[0090] In this embodiment, it should also be noted that after those skilled in the art understand the principle of this embodiment, it can be understood that for the first coil 60 and the first multi-pole magnet 30, the second coil 61 and the second multi-pole magnet 31 for driving the first circuit board 36 to twist, it includes but is not limited to the above setting methods. For example, coils and multi-pole magnets can also be arranged at all four corner positions, or coils and magnets can be arranged at opposite positions, or coils and magnets can be arranged obliquely, as long as the current directions leading to the coils are inconsistent, it can be regarded as an implementation method.

[0091] At the same time, for the coils and multi-pole magnets for driving the first circuit board 36 to translate, it includes but is not limited to the third coil 62 and the third multi-pole magnet 32, the fourth coil 63 and the fourth multi-pole magnet 33, the fifth coil 64 and the fifth multi-pole magnet 34, the sixth coil 65 and the sixth multi-pole magnet 35 set above. For example, only setting the third coil 62 and the third multi-pole magnet 32, the fifth coil 64 and the fifth multi-pole magnet 34, and arranging them at the center position of the base 10 can also be regarded as an implementation method. Of course, there needs to be an included angle, such as 90 degrees, between the third coil 62 and the fifth coil 64 to achieve driving the first circuit board 36 to translate in different horizontal directions.

[0092] In addition, it must be pointed out that the anti-shake device provided in this embodiment can also use the coil-magnet driving structure to drive the imaging chip to move at high speed in a static environment, and can capture images in different spaces at the same time to obtain multiple images. After the multiple images are superimposed, pixel superposition can be achieved, and the resolution can be improved. Obviously, after the resolution is improved, the images captured by the camera will be clearer.

[0093] Embodiment 2:

[0094] This embodiment provides a camera module, which includes the anti-shake device of Embodiment 1. The difference between this embodiment and Embodiment 1 is that a fixing bracket 100, a filter 110, a lens 120, a driving motor 130, and a housing 140 are added.

[0095] Specifically, as shown in Figure 8 , the fixing bracket 100 has a frame structure and is fixedly placed on the placing portion 81 of the second circuit board 80 through the seventh placing groove 81a. One end of the fixing bracket 100 away from the placing portion 81 is fixedly connected to the filter 110.

[0096] As shown in Figure 8 , the housing 140 has a semi-box structure, and a through hole 140b is opened at the axial center position of the upper end surface of the housing 140.

[0097] As shown in Figure 10 , one end of the housing 140 with an opening is fixedly connected to the third circuit board 85. To avoid interference between the housing 140 and the second circuit board 80, notches 140a are opened at the ends of the side walls of the housing 140 close to the second baffle 12 and the fourth baffle 14.

[0098] As shown in Figure 9 , the upper end surface of the driving motor 130 is fixedly connected to the inner end surface of the housing 140, and the lens 120 is placed inside the driving motor 130, that is, the outer side wall of the lens 120 contacts the inner side wall of the driving motor 130. At the same time, when the housing 140 is fixed on the third circuit board 85, a part of the structure of the lens 120 passes through the through hole 140b and is located outside the housing 140 to facilitate the movement and focusing of the lens 120.

[0099] It should be noted that, as shown in Figure 9 , to avoid affecting the normal operation of the anti-shake device, there are gaps between the outer side wall of the driving motor 130 and the first side-standing structure 82, between the outer side wall of the driving motor 130 and the second side-standing structure 83, between the driving motor 130 and the fixing bracket 100, between the inner side wall of the housing 140 and the first side-standing structure 82, between the inner side wall of the housing 140 and the second side-standing structure 83, and between the lens 120 and the filter 110.

[0100] The camera module provided by this embodiment can drive the lens 120 to move to achieve focusing through the provided driving motor 130. Since this camera module has the anti-shake device provided by Embodiment 1, which can drive the imaging chip to move to achieve anti-shake compensation. Obviously, when the camera module provided by this embodiment shakes during shooting, it can quickly perform anti-shake compensation through the anti-shake device, so that the image quality of the images taken by the camera module is better. The principle will not be elaborated here.

[0101] Meanwhile, it should be emphasized that, compared with the prior art, the side-standing structure designed for the second circuit board 80 in the anti-shake device reduces the volume of the anti-shake device, so that the side-standing structure of the second circuit board 80 can be placed inside the housing 140, and further reduces the volume of the camera module.

[0102] Embodiment 3:

[0103] This embodiment provides a terminal device, including a main board and the anti-shake device provided in Embodiment 1 or the camera module provided in Embodiment 2. The anti-shake device or the camera module is connected to the main board. It can be understood that the terminal device provided in this embodiment, due to having the anti-shake device provided in Embodiment 1 or the camera module provided in Embodiment 2, can make the image quality of the captured images better.

[0104] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. An anti-shake device, characterized in that, Comprising: A photosensitive component; And A coil magnet drive structure; Wherein, the photosensitive component is arranged on the coil magnet drive structure, and after the coil magnet drive structure is powered on, it can drive the photosensitive component to move; The coil magnet drive structure includes a base (10), a torsion drive component, and a first circuit board (36); The photosensitive component includes a photosensitive chip (90) and a second circuit board (80). The second circuit board (80) includes a placement portion (81) and a side-standing structure. The placement portion (81) is placed on the first circuit board (36), and the side-standing structure is connected to the side wall of the placement portion (81), and the projection of the side-standing structure is located around the projection of the base; The anti-shake device further includes a third circuit board, and the lower board surface of the base (10) is connected to the board surface at one end of the third circuit board; A plurality of wires are arranged in the third circuit board; The side-standing structure is in communication with the wires in the third circuit board.

2. The anti-shake device according to claim 1, wherein , the projection of the first circuit board (36) is located within the projection range of the base (10), the torsion drive component is located between the base (10) and the first circuit board (36), the photosensitive component is arranged on the first circuit board (36), and after the torsion drive component is powered on, it drives the first circuit board (36) to twist to drive the photosensitive component to twist relative to the base (10).

3. The anti-shake device according to claim 2, wherein The torsion drive component includes a first magnetic component and a first coil component. The first magnetic component is fixedly connected to the base (10), the first coil component is connected to the first circuit board (36), and the projection of the first coil component is located within the projection range of the first magnetic component.

4. The anti-shake device according to claim 3, characterized in that, The first magnetic component includes a first magnetic part and a second magnetic part. The first coil component includes a first coil (60) and a second coil (61). The first magnetic part and the second magnetic part are arranged on the base (10) at intervals. The first coil (60) is close to the first magnetic part, and the projection of the first coil (60) is located within the projection range of the first magnetic part. The second coil (61) is close to the second magnetic part, and the projection of the second coil (61) is located within the projection range of the second magnetic part. By providing currents in different directions to the first coil (60) and the second coil (61), the torsion drive component drives the first circuit board (36) to twist to drive the photosensitive component to twist relative to the base (10).

5. The anti-shake device according to claim 2, characterized in that, The coil magnet drive assembly further includes a translation drive component. The translation drive component is arranged between the base (10) and the first circuit board (36), and is spaced apart from the torsion drive component. After the translation drive component is powered on, it drives the first circuit board (36) to translate to drive the photosensitive component to translate relative to the base (10).

6. The anti-shake device according to claim 5, characterized in that, The translation drive component includes a first translation drive component and a second translation drive component, and there is an included angle between the first translation drive component and the second translation drive component.

7. The anti-shake device according to claim 6, wherein The first translation driving assembly includes a third multi-pole magnet (32) and a third coil (62). The third multi-pole magnet (32) is arranged on the base (10), and the third coil (62) is arranged on the first circuit board (36). The third coil (62) is close to the third multi-pole magnet (32), and the projection of the third coil (62) is within the projection range of the third multi-pole magnet (32).

8. The anti-shake device according to claim 6, wherein, The second translation driving assembly includes a fifth multi-pole magnet (34) and a fifth coil (64). The fifth multi-pole magnet (34) is arranged on the base (10), and the fifth coil (64) is arranged on the first circuit board (36). The fifth coil (64) is close to the fifth multi-pole magnet (34), and the projection of the fifth coil (64) is within the projection range of the fifth multi-pole magnet (34).

9. The anti-shake device according to claim 2, characterized in that, A rolling assembly for supporting the first circuit board (36) is provided between the base (10) and the first circuit board (36).

10. The anti-shake device according to claim 9, wherein, The rolling assembly is a number of balls (40). The base (10) and the first circuit board (36) are provided with a number of oppositely opened limiting grooves. One ball (40) is arranged between each group of the limiting grooves in a relative relationship, and the spherical surfaces of the number of balls (40) are in contact with the base (10) and the first circuit board (36) simultaneously.

11. The anti-shake device according to any one of claims 2 to 10, characterized in that, An elastic member is arranged between the first circuit board (36) and the base (10), and the first circuit board (36) is reset by the elastic member.

12. A camera module, characterized in that, It includes a lens (120) and the anti-shake device according to any one of claims 1 to 11. The image signal obtained by the lens (120) is transmitted to the photosensitive component, and the coil-magnet driving structure drives the photosensitive component to move to compensate for the shake of the camera module.

13. A terminal device, characterized in that, It includes a main board and the anti-shake device or the camera module according to any one of claims 1 to 12. The anti-shake device or the camera module is connected to the main board.

Images