CN115484360A - Anti-shake device, camera module and terminal equipment - Google Patents
Anti-shake device, camera module and terminal equipment Download PDFInfo
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- CN115484360A CN115484360A CN202110662395.1A CN202110662395A CN115484360A CN 115484360 A CN115484360 A CN 115484360A CN 202110662395 A CN202110662395 A CN 202110662395A CN 115484360 A CN115484360 A CN 115484360A
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Abstract
The invention discloses an anti-shake device, a camera module and terminal equipment, relates to the technical field of cameras, and solves the technical problem that the anti-shake device in the prior art cannot perform rotary shake compensation. The anti-shake device comprises a photosensitive assembly; and, a coil magnet drive structure; the photosensitive assembly is arranged on the coil magnet driving structure and can drive the photosensitive assembly to move after the coil magnet driving structure is electrified. The coil magnet driving structure can drive the photosensitive assembly arranged on the coil magnet driving structure to move after being electrified, when the camera shakes, the coil magnet driving structure can drive the photosensitive assembly to move in the direction opposite to the shaking direction of the camera so as to compensate the shaking of the camera, the definition of images shot by the camera is improved, and the technical problem that the camera cannot be accurately driven to the shaking compensation position due to the fact that the weight of the camera is increased and the driving force of the driving structure is insufficient in the prior art can be effectively solved.
Description
Technical Field
The invention relates to the technical field of cameras, in particular to an anti-shake device, a camera module and terminal equipment.
Background
When the camera shoots, vibration inevitably occurs to influence the definition of the shot image, therefore, the driving structure is arranged in the camera to drive the lens to move in the direction opposite to the vibration direction of the camera so as to realize vibration compensation, and the shooting definition of the camera is increased.
However, as the demand for pixels is higher and higher, the lens volume has to be made larger, which increases the weight of the lens, and leads to the requirement for driving force of the driving structure, and naturally the driving structure is larger and larger in size. In practice, the larger the driving structure is, the higher the reliability failure ratio of the camera is, the more the driving structure is, the higher the reliability failure ratio of the camera is, that is, the problem that the driving structure cannot accurately and timely drive the lens to the shake compensation position due to insufficient driving force exists, and the larger the driving structure is, the more the driving structure is, the higher the reliability failure ratio of the camera is, the contrary to the requirement of the camera is.
Disclosure of Invention
In view of the above, an object of the present invention is to overcome the disadvantages of the prior art, and in a first aspect, to provide an anti-shake apparatus for solving the technical problem that the driving force of the driving structure is insufficient to accurately and timely drive the lens to the shake compensation position as the weight of the lens increases when the driving structure drives the lens to prevent shake in the prior art.
The technical scheme adopted by the invention for solving the technical problem is as follows:
an anti-shake apparatus comprising:
a photosensitive assembly; and (c) a second step of,
a coil magnet driving structure;
the photosensitive assembly is arranged on the coil magnet driving structure and can drive the photosensitive assembly to move after the coil magnet driving structure is electrified.
Optionally, coil magnetite drive structure includes the base, twists reverse drive assembly and first circuit board, the projection of first circuit board is located the projection within range of base, it is located to twist reverse drive assembly the base with between the first circuit board, photosensitive assembly locates first circuit board, it gets to drive after the electricity to twist reverse drive assembly first circuit board twists reverse in order to drive photosensitive assembly for the base twists reverse.
Optionally, the torsion driving assembly comprises 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 located within the projection range of the first magnetic assembly.
Optionally, the first magnetic assembly includes a first magnetic part and a second magnetic part, the first coil assembly includes a first coil and a second coil, the first magnetic part and the second magnetic part are spaced from each other and disposed on the base, the first coil is close to the first magnetic part, and the second coil is close to the second magnetic part;
the projection of first coil is located the projection range of first magnetic part, the projection of second coil is located the projection range of second magnetic part, through right first coil with the second coil provides the electric current of equidirectional not, twist reverse drive subassembly drive first circuit board twists reverse in order to drive sensitization subassembly twists for the base twists reverse.
Optionally, coil magnetite drive assembly still includes translation drive assembly, translation drive assembly locates the base with between the first circuit board, translation drive assembly with twist reverse the interval setting between the drive assembly, translation drive assembly gets the back drive of electricity first circuit board translation is in order to drive the sensitization subassembly for the base translation.
Optionally, the translation driving assembly includes a first translation driving assembly and a second translation driving assembly, and an included angle is formed between the first translation driving assembly and the second translation driving assembly.
Optionally, the first translational driving 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 a projection of the third coil is located within a projection range of the third multi-pole magnet.
Optionally, the second translational driving assembly includes a fifth multipole magnet and a fifth coil, the fifth multipole magnet is disposed on the base, the fifth coil is disposed on the first circuit board, the fifth coil is close to the fifth multipole magnet, and a projection of the fifth coil is located within a projection range of the fifth multipole magnet.
Optionally, a rolling assembly for supporting the first circuit board is disposed between the base and the first circuit board.
Optionally, the rolling assembly is a plurality of balls, the base and the first circuit board are provided with a plurality of limiting grooves which are oppositely formed, one ball is arranged between each group of limiting grooves which are oppositely arranged, and the spherical surfaces of the plurality of balls are simultaneously contacted with the base and the first circuit board.
Optionally, the photosensitive assembly includes a photosensitive chip and a second circuit board, the second circuit board includes a placing portion and a side standing structure, the placing portion is placed on the first circuit board, the side standing structure is connected to a side wall of the placing portion, and a projection of the side standing structure is located on a periphery of a projection of the base.
Optionally, an elastic element is arranged between the first circuit board and the base, and the first circuit board is reset through the elastic element.
In a second aspect, the present invention provides a camera module, which includes a lens and the above-mentioned anti-shake apparatus, wherein an image signal obtained by the lens is transmitted to the photosensitive component, and the coil magnet driving structure drives the photosensitive component to move so as to compensate for shake of the camera module.
The invention provides a terminal device, which comprises a main board and the anti-shake device or the camera module, wherein the anti-shake device or the camera module is connected with the main board.
Compared with the prior art, the anti-shake device provided by the invention has the beneficial effects that:
the coil magnet driving structure provided by the invention can drive the photosensitive assembly arranged on the coil magnet driving structure to move after being electrified, and when the camera has shake, the coil magnet driving structure can drive the photosensitive assembly to move in the opposite direction relative to the shake of the camera so as to compensate the shake of the camera and improve the definition of images shot by the camera. And even along with the increase of pixel, camera lens volume increase weight increases, because what the coil magnetite drive structure drove is photosensitive assembly, photosensitive assembly's volume and weight can not change to can effectively avoid among the prior art because camera lens weight increases, drive structure drive power is not enough, can't accurately drive the camera lens to the technical problem of shake compensation position.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an isometric view of the base of the anti-shake apparatus of the present invention;
fig. 2 is an exploded view of a partial structure of the anti-shake apparatus of the present invention;
FIG. 3 is a top view of a part of the structure of the anti-shake apparatus of the present invention;
fig. 4 is an isometric view of a partial structure of the anti-shake apparatus of the invention;
fig. 5 is an isometric view of a second circuit board in the anti-shake apparatus of the invention;
fig. 6 is an exploded view of the anti-shake apparatus of the present invention;
FIG. 7 is an isometric view of the anti-shake apparatus of the present invention;
FIG. 8 is an exploded view of the camera module of the present invention;
FIG. 9 is a cross-sectional view of a camera module of the present invention;
fig. 10 is an isometric view of the camera module of the present invention.
In the figure:
10-a base, 11-a first baffle, 12-a second baffle, 12 a-a first inserting groove, 12 b-a second inserting groove, 13-a third baffle, 14-a fourth baffle, 14 a-a third inserting groove, 14 b-a fourth inserting groove, 15-a first placing groove, 16-a second placing groove, 17-a third placing groove, 18-a fourth placing groove, 19-a fifth placing groove, 20-a sixth placing groove, 21-a first limiting groove, 22-a second limiting groove, 23-a third limiting groove, and 24-a fourth limiting groove;
30-a first multipole magnet, 31-a second multipole magnet, 32-a third multipole magnet, 33-a fourth multipole magnet, 34-a fifth multipole magnet, 35-a sixth multipole magnet;
36-a first circuit board, 36 a-a first connecting pin, 36 b-a second connecting pin, 36 c-a fifth limiting groove, 36 d-a sixth limiting groove, 36 e-a seventh limiting groove, and 36 f-an eighth limiting groove;
40-a ball bearing;
50-a first elastic member, 51-a second elastic member, 52-a third elastic member, 53-a fourth elastic member,
60-first coil, 61-second coil, 62-third coil, 63-fourth coil, 64-fifth coil, 65-sixth coil;
70-a position sensor;
80-a second circuit board, 81-a placing part, 81 a-a seventh placing groove, 82-a first side standing structure, 82 a-a first bending part, 82 b-a first side body, 82 c-a second bending part, 82 d-a second side body, 82 e-a first connecting flat plate, 83-a second side standing structure, 83 a-a third bending part, 82 b-a third side body, 82 c-a fourth bending part, 82 d-a fourth side body and 82 e-a second connecting flat plate;
85-a third circuit board;
90-a photosensitive chip;
100-fixing a bracket;
110-optical filter, 120-lens, 130-driving motor, 140-shell, 140 a-notch and 140 b-through hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely a few embodiments of the invention and are not to be taken as a comprehensive embodiment. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1, the anti-shake apparatus includes a coil magnet driving structure, where the coil magnet driving structure includes a base 10, and the base 10 includes, but is not limited to, a square. Four baffles, namely a first baffle 11, a second baffle 12, a third baffle 13 and a fourth baffle 14 are arranged around the base 10. The side walls of the first baffle plate 11, the second baffle plate 12, the third baffle plate 13 and the fourth baffle plate 14 are fixedly connected to the peripheral side walls of the base 10 respectively, the lower end faces of the first baffle plate 11, the second baffle plate 12, the third baffle plate 13 and the fourth baffle plate 14 and the lower end face of the base 10 are located on the same plane, and the upper end faces of the first baffle plate 11, the second baffle plate 12, the third baffle plate 13 and the fourth baffle plate 14 are located on the same plane.
Specifically, referring to fig. 1, two insertion grooves, that is, a first insertion groove 12a and a second insertion groove 12b, are formed in a side wall of the second baffle 12, and distances from the first insertion groove 12a and the second insertion groove 12b to the upper plate surface of the base 10 are the same and are parallel to the upper plate surface of the base 10; two insertion grooves, namely a third insertion groove 14a and a fourth insertion groove 14b, are also formed in the side wall of the fourth baffle 14, the distance from the third insertion groove 14a to the upper plate surface of the base 10 is consistent with the distance from the fourth insertion groove 14b to the upper plate surface of the base 10 and is parallel to the upper plate surface of the base 10, and meanwhile, the distance from the third insertion groove 14a to the upper plate surface of the base 10 is consistent with the distance from the first insertion groove 12a to the upper plate surface of the base 10.
Referring to fig. 1, a plurality of placing grooves are formed on the upper plate surface of the base 10 near the periphery of each baffle. Specifically, the placing grooves comprise a first placing groove 15 which is arranged on the upper plate surface of the base 10 and close to the first baffle plate 11, and a second placing groove 16 which is arranged on the upper plate surface of the base 10 and close to the third baffle plate 13; wherein the first placement grooves 15 and the second placement grooves 16 are in a diagonal relationship, and the first placement grooves 15 and the second placement grooves 16 are uniformly sized and parallel to each other.
Referring to fig. 1, the placement grooves further include a third placement groove 17 provided on the upper surface of the base 10 adjacent to the first baffle plate 11 and spaced apart from the first placement groove 15, and a fourth placement groove 18 provided on the upper surface of the base 10 adjacent to the third baffle plate 13 and spaced apart from the second placement groove 16; wherein the third placement grooves 17 and the fourth placement grooves 18 are in a diagonal relationship and the third placement grooves 17 and the fourth placement grooves 18 are uniformly sized and parallel to each other.
Referring to fig. 1, the placement grooves further include a fifth placement groove 19 formed on the upper surface of the base 10 near the second baffle 12, and a sixth placement groove 20 formed on the upper surface of the base 10 near the fourth baffle 14. The fifth placement grooves 19 and the sixth placement grooves 20 are parallel to each other and have the same size.
Note that, referring to fig. 1, distances from the first placement grooves 15 and the third placement grooves 17 to the first baffle plate 11, distances from the second placement grooves 16 and the fourth placement grooves 18 to the third baffle plate 13, distances from the fifth placement grooves 19 to the second baffle plate 12, and distances from the sixth placement grooves 20 to the fourth baffle plate 14 are all equal.
Referring to fig. 1, four annular limiting grooves are further uniformly spaced on the upper plate surface of the base 10 near the placement grooves, that is, a first limiting groove 21 near the first placement groove 15 and the sixth placement groove 20, a second limiting groove 22 near the third placement groove 17 and the fifth placement groove 19, a third limiting groove 23 near the fifth placement groove 19 and the second placement groove 16, and a fourth limiting groove 24 near the fourth placement groove 18 and the sixth placement groove 20, wherein the four annular limiting grooves are uniform in size.
Further, the coil magnet driving structure further comprises a torsion driving assembly and a translation driving assembly.
Specifically, referring to fig. 2 and 3, the torsional drive assembly includes a first magnetic assembly and a first coil assembly. The first magnetic member includes a first multi-pole magnet 30 and a second multi-pole magnet 31, but of course, the first multi-pole magnet 30 and the second multi-pole magnet 31 may be other magnetic members, for example, an energized coil. The volume of the first multi-pole magnet 30 is identical to the volume of the first placement groove 15, and the first multi-pole magnet 30 is jammed in the first placement groove 15. The volume of the second multipole magnet 31 is equal to the volume of the second placement groove 16, and the second multipole magnet 31 is jammed in the second placement groove 16. The upper end surfaces of the first and second multipolar magnets 30, 31 are flush with the upper plate surface of the base 10.
Referring to fig. 3, the translation drive assembly includes a first translation drive assembly including a third multi-pole magnet 32 and a fourth multi-pole magnet 33. The volume of the third multipole magnet 32 is equal to the volume of the third placement groove 17, and the third multipole magnet 32 is fitted in the third placement groove 17. The volume of the fourth multi-pole magnet 33 is equal to the volume of the fourth placement groove 18, and the fourth multi-pole magnet 33 is jammed in the fourth placement groove 18. The upper end surfaces of the third and fourth multipole magnets 32, 33 are flush with the upper plate surface of the base 10.
Referring to FIG. 3, the translation drive assembly further includes a second translation drive assembly including a fifth multi-pole magnet 34 and a sixth multi-pole magnet 35. The volume of the fifth multi-pole magnet 34 is equal to the volume of the fifth placement groove 19, and the fifth multi-pole magnet 34 is held in the fifth placement groove 19. The volume of the sixth multi-pole magnet 35 is equal to the volume of the sixth mounting groove 20, and the sixth multi-pole magnet 35 is fitted in the sixth mounting groove 20. The upper end surfaces of the fifth and sixth multipole magnets 34, 35 are flush with the upper plate surface of the base 10.
Referring to fig. 2 and 3, the coil magnet driving structure further includes a first circuit board 36, the first circuit board 36 is a flexible circuit board, and a projection of the first circuit board 36 is located within a projection range of the base 10. The upper surface of the first circuit board 36 is provided with two sets of connecting pins, i.e., a first connecting pin 36a and a second connecting pin 36b, which are arranged side by side. 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. A plurality of wires are further disposed in the first circuit board 36 and are respectively communicated with the first connection pins 36a and the second connection pins 36b.
Referring to fig. 2 and 3, four limiting grooves are formed on the surface of the first circuit board 36 close to the base 10, that is, a fifth limiting groove 36c corresponding to the first limiting groove 21 and having the same size, a sixth limiting groove 36d corresponding to the second limiting groove 22 and having the same size, a seventh limiting groove 36e corresponding to the third limiting groove 23 and having the same size, and an eighth limiting groove 36f corresponding to the fourth limiting groove 24 and having the same size.
Referring to fig. 2 and 3, the coil magnet driving structure further includes a rolling assembly for supporting the first circuit board 36, the rolling assembly including, but not limited to, a plurality of rolling balls 40, such as a plurality of glass balls, or other spherical structures. The balls 40 are disposed 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, and the spherical surfaces of the balls 40 contact the first circuit board 36 and the upper board surface of the base 10 at the same time.
It should be noted here that, referring to fig. 2 and 3, the first circuit board 36 is placed on the upper plate surface of the base 10 through the balls 40, and the balls 40 are not only used for supporting the first circuit board 36, but also for providing a gap between the first circuit board 36 and the base 10, and can also reduce the friction force when the first circuit board 36 moves. Meanwhile, it should be noted that there is a gap between the first circuit board 36 and each of the four baffles.
Referring to fig. 2 and 3, four elastic members are connected to an end surface of the first circuit board 36 close to the base 10, and the elastic members include, but are not limited to, springs, and may also be elastic sheets or leaf springs. 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. One end of the first elastic element 50 and one end of the second elastic element 51 are connected to one side of the first circuit board 36 close to the second baffle 12, the other end of the first elastic element 50 is inserted into the first insertion groove 12a, and the other end of the second elastic element 51 is inserted into the second insertion groove 12 b; the third elastic member 52 and one end of the fourth elastic member are connected to the first circuit board 36 on the side close to the fourth blocking plate 14, and the other end of the third elastic member 52 is inserted into the third insertion groove 14a, and the other end of the fourth elastic member 53 is inserted into the fourth insertion groove 14 b.
Further, referring to fig. 2 and 3, the first coil assembly includes a first coil 60 and a second coil 61. Wherein, the first coil 60 is fixedly connected on the first circuit board 36 and is close to the position of the first multi-pole magnet 30, and the projection of the first coil 60 is positioned in the projection range of the first multi-pole magnet 30; the second coil 61 is fixed to the first circuit board 36 at a position close to the second multi-pole magnet 31, and the projection of the first coil 60 is located within the projection range of the first multi-pole magnet 30.
Referring to fig. 2 and 3, the first translating assembly further includes a third coil 62 and a fourth coil 63. Wherein, the third coil 62 is fixed on the first circuit board 36, near the position of the third multipole magnet 32, and the projection of the third coil 62 is located in the projection range of the third multipole magnet 32; the fourth coil 63 is fixed to the first circuit board 36 at a position close to the fourth multi-pole magnet 33, and the projection of the fourth coil 63 is located within the projection range of the fourth multi-pole magnet 33.
Referring to fig. 2 and 3, the second translation assembly further includes a fifth coil 64 and a sixth coil 65. Wherein, the fifth coil 64 is fixedly connected on the first circuit board 36 and is close to the position of the fifth multi-pole magnet 34, and the projection of the fifth coil 64 is positioned in the projection range of the fifth multi-pole magnet 34; the sixth coil 65 is fixed to the first circuit board 36 at a position close to the sixth multipole magnet 35, and a projection of the sixth coil 65 is located within a projection range of the sixth multipole magnet 35.
Of course, it should be noted that different coils are connected to different wires in the first circuit board 36, and the description thereof is omitted here. Position sensors 70 for detecting coil positions are provided in the coils of the first coil 60, the second coil 61, the third coil 62, and the fourth coil 63.
Referring to fig. 4 and 5, the anti-shake apparatus further includes a photosensitive element, the photosensitive element includes a second circuit board 80 and a photosensitive chip 90, the second circuit board 80 is also a flexible circuit board, and a projection of the second circuit board 80 is located at a periphery of a 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 square shape, and the placement portion 81 is disposed coaxially with the first circuit board 36. A seventh placing groove 81a is formed in the upper end surface of the placing portion 81, i.e., the center position of the end surface far away from the first circuit board 36, and two connecting pins are also arranged on the end surface of the placing portion 81 near the first circuit board 36 and are respectively communicated with the first connecting pin 36a and the second connecting pin 36b of the first circuit board 36.
Referring to fig. 4 and 5, 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 connecting flat plate 82e, one end of the first bending portion 82a is connected to the side wall of the placing portion 81 near the first baffle plate 11, a gap is formed between the first bending portion 82a and the first baffle plate 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 the first side body 82b is parallel to the first baffle plate 11. The first side 82b is connected to the second side 82d through the second bending portion 82c, the second side 82d is close to the second baffle 12, and the second side 82d is parallel to the second baffle 12. One end of the second side body 82d close to the base 10 is connected to the first connecting plate 82e, and the end surface of the first connecting plate 82e is located in the same plane as the lower plate surface of the base 10.
Referring to fig. 4 and 5, the second side erecting 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 a sidewall of the placing portion 81 near one side of the third baffle 13, a gap is formed 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 the third side body 82b is parallel to the third baffle 13. The third side 82b is connected to the fourth side 82d through a fourth bending portion 82c, the fourth side 82d is close to the fourth baffle 14, and the fourth side 82d is 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 plate 82e, and the end surface of the second connecting plate 82e and the lower plate surface of the base 10 are located in the same plane.
Further, referring to fig. 4, the photosensitive chip 90 is placed on the second circuit board 80 through the seventh placing groove 81a and communicates with the second circuit board 80, and the photosensitive chip 90 is arranged coaxially with the placing portion 81.
Referring to fig. 6 and 7, the anti-shake apparatus further includes a third circuit board 85, and the third circuit board 85 is also a flexible circuit board. The lower plate of the base 10 is attached to the plate of one end of the third circuit board 85 by means including, but not limited to, bonding. Moreover, the end face of the first connecting flat plate 82e is in contact fit 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 side standing structure 82 is communicated with 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 fit with the plate surface of the third circuit board 85, and the second side standing structure 83 is communicated with the wires in the third circuit board 85 through the second connecting flat plate 82 e.
Referring to fig. 6 and 7, in order to facilitate understanding of the anti-shake apparatus of the present invention, the following description is made:
it is known that interaction between magnetic fields can occur, and when a coil is energized, an electromagnetic phenomenon occurs to generate a magnetic field, and if the coil is located in the magnetic field, interaction between the energized coil and the magnetic field occurs to generate a force.
When the camera shooting of the anti-shake device shakes, the torsion driving assembly in the anti-shake device drives the imaging chip to twist relative to the base 10, and the imaging chip is driven to translate relative to the base 10 by matching with the first translation driving assembly and the second translation driving assembly, so that the imaging chip can rapidly move to a position opposite to the shaking direction of the camera to perform shake compensation.
It can be understood that, the driving displacement of the photosensitive chip 90 driven by the torsion driving component and the translation driving component is decomposed into the displacement relative to the base 10 along the length direction of the third multipole magnet 32 and the fifth multipole magnet 34, and the photosensitive chip 90 can be twisted relative to the base 10 by arranging the first coil 60 and the second coil 61, so that a torsion axis is increased, more routes for shake compensation movement can be provided for the photosensitive chip 90, the photosensitive chip 90 can be driven to a shake compensation position more quickly and effectively, and the anti-shake efficiency can be obviously improved.
In a specific process, the current flows through the third circuit board 85, then flows into the first standing structure 82 and the second standing structure 83, then enters the placing portion 81, and finally flows into the first circuit board 36. The current that has entered 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 acting force is generated between the first coil 60 and the first multi-pole magnet 30, a second acting force is generated between the second coil 61 and the second multi-pole magnet 31, a third acting force is generated between the third coil 62 and the third multi-pole magnet 32, a fourth acting force is generated between the fourth coil 63 and the fourth multi-pole magnet 33, a second acting force is generated between the fifth coil 64 and the fifth multi-pole magnet 34, and a sixth acting force is generated between the sixth coil 65 and the sixth multi-pole magnet 35.
Specifically, currents in different directions enter the first coil 60 and the second coil 61 through the first circuit board 36, respectively, so that a first acting force acting on the first circuit board 36, generated between the first coil 60 and the first multi-pole magnet 30, is opposite to a second acting force acting on the first circuit board 36, generated between the second coil 61 and the second multi-pole magnet 31, and it can be understood that when the first circuit board 36 is located at a diagonal position, an acting force in an opposite direction acts on the first circuit board 36, the first circuit board 36 is twisted, and the photosensitive chip 90 is finally driven to be twisted, and of course, the direction of twisting of the photosensitive chip 90 is opposite to the direction of twisting of the camera.
At the same time, the same direction of current enters the third coil 62 and the fourth coil 63, so that the third force acting on the first circuit board 36, which is generated between the third coil 62 and the third multipole magnet 32, is in the same direction as the fourth force acting on the first circuit board 36, which is generated between the fourth coil 63 and the fourth multipole magnet 33, it being understood that the third force and the fourth force can drive the first circuit board 36 to move in the longitudinal direction of the third multipole magnet 32. To finally drive the photosensitive chip 90 to move in the longitudinal direction of the third multipole magnet 32.
At the same time, the same direction of current enters the fifth coil 64 and the sixth coil 65, so that the fifth acting force generated between the fifth coil 64 and the fifth multi-pole magnet 34 and acting on the first circuit board 36 is in the same direction as the sixth acting force generated between the sixth coil 65 and the sixth multi-pole magnet 35 and acting on the first circuit board 36, and 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 longitudinal direction of the fifth multi-pole magnet 34. To finally drive the photosensitive chip 90 to move in the longitudinal direction of the fifth multipole magnet 34.
Here, it should be noted that, in the present embodiment, through the four elastic members, that is, the first elastic member 50, the second elastic member 51, the third elastic member 52 and the fourth elastic member 53, after the currents of the plurality of coils are cut off, the first circuit board 36 can be reset to reset the photosensitive chip 90 to the 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, so as to prevent the photosensitive chip 90 from being operated when the anti-shake device is not in operation. That is, four elastic components that this embodiment provided can reset photosensitive chip 90, can also stabilize photosensitive chip 90's position simultaneously, kill two birds with one stone.
It should be noted that, even if the first baffle 11, the second baffle 12, the third baffle 13 and the fourth baffle 14 are not arranged on the base 10 for connecting the elastic member with the first circuit board 36, the elastic member including but not limited to an elastic sheet perpendicular to the base 10, such as a leaf spring, is 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, and meanwhile, the volume of the anti-shake apparatus can be reduced because the four baffles are eliminated.
In this embodiment, it should be noted that the position sensor 70 is further configured to detect a position of the photosensitive assembly moving relative to the base 10, so as to provide a reference for further accurately controlling the movement of the photosensitive assembly, and improve the moving accuracy of the driving photosensitive assembly of the coil magnet driving structure.
In this embodiment, it should be further noted that the size of the anti-shake device can be effectively reduced by providing a plurality of placing grooves for placing the multipole magnets.
In this embodiment, referring to fig. 7, it should be further noted that the second circuit board 80 is driven to move when the anti-shake apparatus is in operation. The flexible circuit board that anti-shake device connects among the current anti-shake device for avoid the flexible circuit board to influence the anti-shake, is the flexible circuit board of buckling in the base 10 outside usually, but when this kind of mode anti-shake device drove the motion of flexible circuit board, the drive power of extravagant on the flexible circuit board is still more. In the embodiment, the second circuit board 80 is disposed near the base 10 through the side-standing structure disposed on the second circuit board 80, 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 located on the periphery of the projection of the base 10, which not only can reduce the length of the second circuit board 80 and reduce the volume of the anti-shake apparatus, but also can reduce the force for driving the second circuit board 80 to move. That is, it is understood that one end of the flexible circuit board is directly connected to the anti-shake apparatus, and the driving force for driving the flexible circuit board by the driving structure is undoubtedly greater than the force for driving the first and second side standing structures 83 to move in the present embodiment.
In the present embodiment, it should be further noted that, after a person skilled in the art knows the principle of the present embodiment, it is clear that the first coil 60 and the first multi-pole magnet 30, and the second coil 61 and the second multi-pole magnet 31, which drive the first circuit board 36 to twist, include but are not limited to the above arrangement, for example, the coils and the multi-pole magnets may be arranged at four corner positions, or the coils and the magnets may be arranged at opposite positions, or the coils and the magnets may be arranged obliquely, and the directions of currents flowing to the coils are not consistent, and all of them are one embodiment.
Meanwhile, the coils and the multi-pole magnets for driving the first circuit board 36 to translate include, but are 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, and the sixth coil 65 and the sixth multi-pole magnet 35, which are arranged as described above. For example, it is an embodiment that only the third coil 62 and the third multi-pole magnet 32, the fifth coil 64 and the fifth multi-pole magnet 34 are provided and arranged at the center of the base 10, and of course, an included angle, for example, 90 degrees, is required between the third coil 62 and the fifth coil 64 to achieve the purpose of driving the first circuit board 36 to translate in different horizontal directions.
In addition, it must be pointed out that the anti-shake device provided by this embodiment can also utilize the coil magnet to drive the imaging chip to move at a high speed in a static environment, and can shoot pictures in different spaces at the same time to obtain a plurality of pictures at the same time, and can realize the superposition of pixels after the superposition of the plurality of pictures, so as to improve the resolution ratio.
Example two:
the present embodiment provides a camera module including the anti-shake apparatus of the first embodiment, which is different from the first embodiment in that a fixing bracket 100, an optical filter 110, a lens 120, a driving motor 130, and a housing 140 are added.
Specifically, referring to fig. 8, the fixing bracket 100 has a frame structure, and the fixing bracket 100 is fixedly placed on the placing portion 81 of the second circuit board 80 through the seventh placing groove 81 a. One end of the fixing bracket 100 away from the placing part 81 is fixedly connected with the optical filter 110.
Referring to fig. 8, the housing 140 has a half-box structure, and a through hole 140b is formed at an axial center position of an upper end surface of the housing 140.
Referring to fig. 10, an open end of the casing 140 is fixedly connected to the third circuit board 85, and in order to avoid interference between the casing 140 and the second circuit board 80, notches 140a are formed at end portions of the casing 140 close to the side walls of the second baffle 12 and the fourth baffle 14.
Referring to fig. 9, the upper end surface of the driving motor 130 is fixed to the inner end surface of the housing 140, and the lens 120 is disposed in the driving motor 130, that is, the outer sidewall of the lens 120 contacts the inner sidewall of the driving motor 130, and meanwhile, when the housing 140 is fixed on the third circuit board 85, a part of the lens 120 passes through the through hole 140b and is located outside the housing 140, so that the lens 120 can move for focusing.
It should be noted that, referring to fig. 9, in order to avoid affecting the normal operation of the anti-shake apparatus, gaps are formed between the outer sidewall of the driving motor 130 and the first side standing structure 82, between the outer sidewall 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 sidewall of the housing 140 and the first side standing structure 82, between the inner sidewall of the housing 140 and the second side standing structure 83, and between the lens 120 and the optical filter 110.
The camera module that this embodiment provided, driving motor 130 through setting up can drive camera lens 120 and remove and realize focusing, because this camera module has the anti-shake device that embodiment one provided and can realize that drive imaging chip removes and realize anti-shake compensation, it is obvious, the camera module that this embodiment provides can be through the quick anti-shake compensation that carries on of anti-shake device when the camera shake, so that the image quality that camera module shot is better, its principle here is no longer repeated.
Meanwhile, it should be emphasized that, compared to the prior art, the anti-shake device has a side-standing structure of the second circuit board 80, so that the size of the anti-shake device is reduced, the side-standing structure of the second circuit board 80 can be placed in the housing 140, and the size of the camera module can be reduced.
Example three:
the present embodiment provides a terminal device, which includes a main board and an anti-shake device provided in the first embodiment or a camera module provided in the second embodiment, where the anti-shake device or the camera module is connected to the main board.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (14)
1. An anti-shake apparatus, comprising:
a photosensitive assembly; and the number of the first and second groups,
a coil magnet driving structure;
the photosensitive assembly is arranged on the coil magnet driving structure and can drive the photosensitive assembly to move after the coil magnet driving structure is electrified.
2. The anti-shake apparatus according to claim 1, wherein the coil magnet driving structure comprises a base (10), a torsion driving component and a first circuit board (36), a projection of the first circuit board (36) is located within a projection range of the base (10), the torsion driving component is located between the base (10) and the first circuit board (36), the photosensitive component is located on the first circuit board (36), and the torsion driving component drives the first circuit board (36) to twist after being powered on so as to drive the photosensitive component to twist relative to the base (10).
3. The anti-shake apparatus according to claim 2, wherein the torsion driving assembly comprises a first magnetic assembly and a first coil assembly, the first magnetic assembly is fixedly connected to the base (10), the first coil assembly is connected to the first circuit board (36), and a projection of the first coil assembly is located within a projection range of the first magnetic assembly.
4. The anti-shake apparatus according to claim 3, wherein the first magnetic assembly comprises a first magnetic member and a second magnetic member, the first magnetic member comprises a first coil (60) and a second coil (61), the first magnetic member and the second magnetic member are spaced apart from each other and disposed on the base (10), the first coil (60) is close to the first magnetic member, a projection of the first coil (60) is located within a projection range of the first magnetic member, the second coil (61) is close to the second magnetic member, a projection of the second coil (61) is located within a projection range of the second magnetic member, and the torsion driving assembly drives the first circuit board (36) to be twisted to drive the photosensitive assembly to be twisted relative to the base (10) by supplying currents in different directions to the first coil (60) and the second coil (61).
5. The anti-shake apparatus according to claim 2, wherein the coil magnet driving assembly further comprises a translation driving assembly, the translation driving assembly is disposed between the base (10) and the first circuit board (36), the translation driving assembly and the torsion driving assembly are disposed at an interval, and the translation driving assembly drives the first circuit board (36) to translate to drive the photosensitive assembly to translate relative to the base (10) after being powered on.
6. The anti-shake apparatus according to claim 5, wherein the translation drive assembly comprises a first translation drive assembly and a second translation drive assembly, the first translation drive assembly and the second translation drive assembly having an included angle therebetween.
7. The anti-shake apparatus according to claim 6, wherein the first translational drive assembly comprises a third multipole magnet (32) and a third coil (62), the third multipole magnet (32) being provided to the base (10), the third coil (62) being provided to the first circuit board (36), the third coil (62) being located close to the third multipole magnet (32), a projection of the third coil (62) being located within a projection range of the third multipole magnet (32).
8. The anti-shake apparatus according to claim 6, wherein the second translational drive assembly includes a fifth multipole magnet (34) and a fifth coil (64), the fifth multipole magnet (34) is disposed on the base (10), the fifth coil (64) is disposed on the first circuit board (36), the fifth coil (64) is close to the fifth multipole magnet (34), and a projection of the fifth coil (64) is within a projection range of the fifth multipole magnet (34).
9. Anti-shake apparatus according to claim 2, characterised in that a rolling assembly is provided between the base (10) and the first circuit board (36) for supporting the first circuit board (36).
10. The anti-shake apparatus according to claim 9, wherein the rolling elements are balls (40), the base (10) and the first circuit board (36) have a plurality of oppositely disposed limiting grooves, one ball (40) is disposed between each group of the limiting grooves, and the balls (40) contact with the base (10) and the first circuit board (36) simultaneously.
11. The anti-shake apparatus according to claim 2, wherein the photosensitive assembly comprises a photosensitive chip (90) and a second circuit board (80), the second circuit board (80) comprises a placement portion (81) and a side standing structure, the placement portion (81) is placed on the first circuit board (36), the side standing structure is connected to a side wall of the placement portion (81) and a projection of the side standing structure is located at a periphery of a projection of the base.
12. The anti-shake apparatus according to any one of claims 2 to 11, wherein an elastic member is provided between the first circuit board (36) and the base (10), and the first circuit board (36) is reset by the elastic member.
13. A camera module, comprising a lens (120) and the anti-shake apparatus according to any one of claims 1 to 12, wherein an 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 so as to compensate for shake of the camera module.
14. A terminal device, comprising a main board and the anti-shake apparatus or the camera module according to any one of claims 1 to 13, wherein the anti-shake apparatus or the camera module is connected to the main board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110662395.1A CN115484360A (en) | 2021-06-15 | 2021-06-15 | Anti-shake device, camera module and terminal equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110662395.1A CN115484360A (en) | 2021-06-15 | 2021-06-15 | Anti-shake device, camera module and terminal equipment |
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| Publication Number | Publication Date |
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| CN115484360A true CN115484360A (en) | 2022-12-16 |
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| CN202110662395.1A Pending CN115484360A (en) | 2021-06-15 | 2021-06-15 | Anti-shake device, camera module and terminal equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116300259A (en) * | 2023-02-15 | 2023-06-23 | 华为技术有限公司 | Iris diaphragm, lens assembly and electronic device |
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2021
- 2021-06-15 CN CN202110662395.1A patent/CN115484360A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116300259A (en) * | 2023-02-15 | 2023-06-23 | 华为技术有限公司 | Iris diaphragm, lens assembly and electronic device |
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