CN108155771B - Impact-resistant OIS voice coil motor, camera module and electronic product - Google Patents
Impact-resistant OIS voice coil motor, camera module and electronic product Download PDFInfo
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- CN108155771B CN108155771B CN201810210131.0A CN201810210131A CN108155771B CN 108155771 B CN108155771 B CN 108155771B CN 201810210131 A CN201810210131 A CN 201810210131A CN 108155771 B CN108155771 B CN 108155771B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
Abstract
The invention relates to an impact-resistant OIS voice coil motor, a camera module and an electronic product. Under the action of the electromagnetic component, the upper elastic sheet and the lower elastic sheet can both generate thrust parallel to the first direction and thrust perpendicular to the first direction, so that the lens can be driven to move along the direction parallel to the first direction to realize an automatic focusing function, and the lens can be driven to move along the direction perpendicular to the first direction to realize an anti-shake function. The impact-resistant OIS voice coil motor overcomes the defects that the traditional suspension wire is not impact-resistant and is easy to break, and improves the stability of the structure.
Description
Technical Field
The invention relates to the technical field of voice coil motors, in particular to an impact-resistant OIS voice coil motor, a camera module and an electronic product.
Background
OIS (Optical Image Stabilizer ) voice coil motor, commonly called optical anti-shake voice coil motor, is a device that converts electrical energy into mechanical energy and can realize linear and limited swing angle movement, and is applied to a lens in an electronic product, not only can realize an automatic focusing function of the lens, but also can effectively overcome image blurring caused by lens shake.
The conventional OIS voice coil motor mainly uses a spring to control the movement of the lens in a direction parallel to the optical axis, and uses a suspension to control the movement of the lens in a direction perpendicular to the optical axis. Because the suspension wires are thin and fragile, the suspension wires are easy to break when being impacted by a large external force, and after the suspension wires are broken, the lens cannot move in the direction perpendicular to the optical axis, so that the lens cannot work normally.
Disclosure of Invention
Based on this, it is necessary to provide an anti-impact OIS voice coil motor, a camera module and an electronic product with a more stable structure, aiming at the problem that the suspension wire of the traditional OIS voice coil motor is easy to break.
An impact resistant OIS voice coil motor comprising:
a base;
the shell is arranged on the base and is enclosed with the base to form a cavity;
an electromagnetic assembly received within the cavity;
the upper elastic sheet is accommodated in the cavity and connected with the base, and under the action of the electromagnetic assembly, the upper elastic sheet can generate thrust parallel to a first direction and thrust perpendicular to the first direction, and the first direction is parallel to the axial direction of the impact-resistant OIS voice coil motor; and
the lower elastic sheet is accommodated in the cavity, the lower elastic sheet is connected with the base, the lower elastic sheet and the upper elastic sheet are arranged at intervals along the first direction, and under the action of the electromagnetic assembly, the lower elastic sheet can generate thrust parallel to the first direction and thrust perpendicular to the first direction.
According to the impact-resistant OIS voice coil motor, under the action of the electromagnetic assembly, the upper elastic sheet and the lower elastic sheet can both generate thrust parallel to the first direction and thrust perpendicular to the first direction, so that the lens can be driven to move along the direction parallel to the first direction, an automatic focusing function is realized, and the lens can be driven to move along the direction perpendicular to the first direction, so that an anti-shake function is realized. The impact-resistant OIS voice coil motor overcomes the defects that the traditional suspension wire is not impact-resistant and is easy to break, and improves the stability of the structure.
In one embodiment, the base comprises a fixing plate and a connecting column arranged on one side of the fixing plate, the shell is mounted on the fixing plate, the connecting column is accommodated in the cavity and extends along the first direction, the upper elastic sheet is connected with one end, far away from the fixing plate, of the connecting column, and the lower elastic sheet is connected with the fixing plate. The upper elastic sheet and the lower elastic sheet share the same base, so that the fit tolerance in the assembly process can be reduced, and the tilt value can be improved.
In one embodiment, the upper elastic sheet comprises a first inner ring, a first inner chord wire, a first outer ring and a first outer chord wire, the first outer ring is arranged on the periphery of the first inner ring, the first inner chord wire is positioned between the first inner ring and the first outer ring, two ends of the first inner chord wire are respectively connected with the first inner ring and the first outer ring, the first inner chord wire can generate thrust parallel to the first direction, two ends of the first outer chord wire are respectively connected with the outer side wall of the first outer ring and the connecting column, and the first outer chord wire can generate thrust perpendicular to the first direction;
the lower elastic sheet comprises a second inner ring, a second inner string wire, a second outer ring and a second outer string wire, wherein the second outer ring is arranged on the periphery of the second inner ring, the second inner string wire is positioned between the second inner ring and the second outer ring, two ends of the second inner string wire are respectively connected with the second inner ring and the second outer ring, the second inner string wire can generate thrust parallel to the first direction, two ends of the second outer string wire are respectively connected with the outer side wall of the second outer ring and the fixing plate, and the second outer string wire can generate thrust perpendicular to the first direction.
The upper elastic sheet respectively realizes two functions of automatic focusing and anti-shake through the first inner chord wire and the first outer chord wire, and the lower elastic sheet also respectively realizes two functions of automatic focusing and anti-shake through the second inner chord wire and the second outer chord wire, so that the traditional suspension wire is omitted, and the production difficulty and the production cost are reduced.
In one embodiment, the electromagnetic assembly comprises a carrier, an AF coil, a mounting frame, a magnet set and an OIS coil set, wherein the AF coil is wound on the carrier, the magnet set is arranged on the mounting frame, the mounting frame is arranged on the periphery of the carrier, the mounting frame and the carrier are both positioned between the upper elastic sheet and the lower elastic sheet, and the OIS coil set is arranged on a position corresponding to the magnet set.
In one embodiment, the direction from the OIS coil set to the magnet set is perpendicular to the first direction. The arrangement mode of the OIS coil group reduces the height of the impact-resistant OIS voice coil motor in the axial direction of the OIS voice coil motor, and is favorable for lightening and thinning the impact-resistant OIS voice coil motor.
In one embodiment, the mounting frame is provided with four bar grooves, the extending directions of two adjacent bar grooves are perpendicular, the magnet group comprises four magnets, the magnets are arranged in the four bar grooves in a one-to-one correspondence manner, the OIS coil group comprises four OIS coils, and the four OIS coils are respectively arranged in four corners of the housing and are arranged in one-to-one correspondence with the four magnets. Four OIS coils are distributed in four corners of the housing, and space in the housing is fully utilized, so that the layout of each component in the impact-resistant OIS voice coil motor is more reasonable.
In one embodiment, the housing is square and comprises four side plates connected in sequence, and the four OIS coils are arranged in one-to-one correspondence with the four side plates;
the OIS coils comprise reference surfaces formed by winding wires of the OIS coils, and the reference surfaces of each OIS coil are parallel to one surface of the corresponding side plate, which is close to the cavity. The OIS coil and the magnet interact to generate ampere force in the positive and negative directions of the X axis and the positive and negative directions of the Y axis so as to compensate the disturbance quantity of the lens in each direction and comprehensively realize the anti-shake function.
In one embodiment, the electromagnetic assembly further comprises a circuit board, wherein a part of the structure of the circuit board is accommodated in the cavity, and the circuit board is electrically connected with the electromagnetic assembly and at least one of the upper elastic sheet and the lower elastic sheet. The circuit board can ensure the normal work of the electromagnetic assembly, thereby smoothly realizing two functions of automatic focusing and anti-shake.
A camera module, comprising:
any one of the above-described impact-resistant OIS voice coil motors; and
and the lens is arranged in the anti-impact OIS voice coil motor in a penetrating way.
An electronic product comprises the camera module.
Because the structure of the anti-impact OIS voice coil motor is stable, the structural stability of the camera module and the electronic product using the anti-impact OIS voice coil motor is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other embodiments of the drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an anti-impact OIS voice coil motor according to a first embodiment of the present invention;
FIG. 2 is an exploded view of the anti-shock OIS voice coil motor shown in FIG. 1;
fig. 3 is a schematic diagram of a matching structure of an upper spring plate, a lower spring plate and a base in the anti-impact OIS voice coil motor shown in fig. 1;
fig. 4 is a schematic structural diagram of an upper spring plate in the anti-impact OIS voice coil motor shown in fig. 1;
fig. 5 is a schematic structural diagram of a lower spring plate in the anti-impact OIS voice coil motor shown in fig. 1;
fig. 6 is a schematic partial structure of the anti-impact OIS voice coil motor shown in fig. 1;
FIG. 7 is a schematic view of the mounting bracket of the anti-shock OIS voice coil motor of FIG. 1;
fig. 8 is a schematic partial structure of an anti-impact OIS voice coil motor according to a second embodiment of the present invention.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The impact-resistant OIS voice coil motor of an embodiment of the invention is mainly applied to an image pickup module of an electronic product, a lens in the image pickup module is penetrated in the impact-resistant OIS voice coil motor, and the impact-resistant OIS voice coil motor can realize automatic focusing of the lens and prevent the image blurring caused by lens shake.
Referring to fig. 1, 2 and 6, the anti-impact OIS voice coil motor includes a housing 100, a base 200, an upper spring 300, a lower spring 400 and an electromagnetic assembly 500, wherein the housing 100 is mounted on the base 200 and encloses a cavity 102 with the base 200, the upper spring 300, the lower spring 400 and the electromagnetic assembly 500 are all accommodated in the cavity 102, and the upper spring 300 and the lower spring 400 are disposed at intervals along a first direction. Under the action of the electromagnetic assembly 500, the upper spring plate 300 and the lower spring plate 400 can generate a thrust acting on the lens and parallel to the first direction so as to realize automatic focusing of the lens, and can also generate a thrust acting on the lens and perpendicular to the first direction so as to compensate disturbance of the lens in the direction perpendicular to the first direction and prevent shaking of the lens. The first direction refers to the optical axis direction of the lens, that is, the axial direction of the anti-impact OIS voice coil motor.
Specifically, the casing 100 is square, with one side open and the other side closed, four side plates 110 connected in sequence are provided in the middle, and the base 200 is disposed at one side of the opening of the casing 100. In other embodiments, the housing 100 may also have other shapes, such as cylindrical, etc.
As shown in fig. 2 and 3, the base 200 includes a fixing plate 210, a connecting column 220 and a positioning block 230, the connecting column 220 and the positioning block 230 are disposed on the same side of the fixing plate 210, the housing 100 is mounted on the fixing plate 210, the connecting column 220 and the positioning block 230 are both accommodated in the cavity 102, the extending length of the connecting column 220 in the first direction is greater than that of the positioning block 230 in the first direction, the upper elastic sheet 300 is connected with one end of the connecting column 220 far away from the fixing plate 210, and the lower elastic sheet 400 is connected with the positioning block 230. The connecting column 220 mainly supports and positions the upper spring plate 300, and the positioning block 230 mainly supports and positions the lower spring plate 400. It is understood that in other embodiments, the positioning block 230 may be omitted, so that the lower spring 400 is directly connected to the side of the fixing plate 210 provided with the connecting post 220.
As shown in fig. 3 and 4, the upper elastic sheet 300 includes a first inner ring 310, a first inner string wire 320, a first outer ring 330 and a first outer string wire 340, the first outer ring 330 is disposed at the periphery of the first inner ring 310, the first inner string wire 320 is located between the first inner ring 310 and the first outer ring 330, and two ends of the first inner string wire 320 are respectively connected with the first inner ring 310 and the first outer ring 330. Both ends of the first outer string 340 are connected to the outer sidewall of the first outer ring 330 and the connection post 220, respectively.
In this embodiment, the first inner ring 310 is a complete ring structure, the first outer ring 330 is a polygonal structure, the first inner wire 320 is curved between the first inner ring 310 and the first outer ring 330, and has a certain elastic force in the direction parallel to and perpendicular to the first direction, and the elastic coefficient in the direction parallel to the first direction is smaller than that in the direction perpendicular to the first direction, so that the first inner wire 320 is easier to deform in the direction parallel to the first direction than in the direction perpendicular to the first direction, and pushes the lens to move along the first direction, thereby realizing auto-focusing. Optimally, the first inner wire 320 only generates a thrust force parallel to the first direction, and controls the movement of the lens in the direction parallel to the first direction.
The first inner string wires 320 are provided with four, and are respectively arranged between the first inner ring 310 and the first outer ring 330 at equal angles of 90 degrees around the center of the first inner ring 310.
The first outer chord 340 is serpentine in shape and has a certain elastic force in both the parallel and perpendicular directions. However, in contrast to the first inner string wire 320, the first outer string wire 340 has a larger elastic modulus in the direction parallel to the first direction than in the direction perpendicular to the first direction, and thus, the first outer string wire 340 is more likely to deform in the direction perpendicular to the first direction than in the direction parallel to the first direction, and pushes the lens to move in the direction perpendicular to the first direction, so as to compensate for the offset of the lens due to the shake in the direction perpendicular to the first direction. Optimally, the first outer chord 340 only generates thrust perpendicular to the first direction, and controls movement of the lens in the perpendicular to the first direction.
Similar to the first inner wires 320, four first outer wires 340 are provided, and two adjacent first outer wires 340 are disposed at substantially 90 °.
Similar to the upper spring 300, as shown in fig. 3 and 5, the lower spring 400 includes a second inner ring 410, a second inner wire 420, a second outer ring 430 and a second outer wire 440, the second outer ring 430 is disposed at the periphery of the second inner ring 410, the second inner wire 420 is located between the second inner ring 410 and the second outer ring 430, and two ends of the second inner wire 420 are connected with the second inner ring 410 and the second outer ring 430 respectively. Both ends of the second outer string wire 440 are connected to the outer sidewall of the second outer ring 430 and the fixing plate 210, respectively.
The second inner ring 410 is a complete ring structure, the second outer ring 430 is a polygonal structure, the second inner wire 420 is wound between the second inner ring 410 and the second outer ring 430, has a certain elastic force in the direction parallel to and perpendicular to the first direction, and has an elastic coefficient smaller than that in the direction perpendicular to the first direction, so that the second inner wire 420 is easier to deform in the direction parallel to the first direction than in the direction perpendicular to the first direction, and pushes the lens to move along the first direction, thereby realizing automatic focusing. Optimally, the second inner wire 420 only generates a thrust force parallel to the first direction, and controls the movement of the lens in the direction parallel to the first direction.
The second inner chord wires 420 are provided with four, and are respectively arranged between the second inner ring 410 and the second outer ring 430 at equal angles of 90 degrees around the center of the second inner ring 410.
The second outer string 440 is wound with a certain elastic force in a direction parallel and perpendicular to the first direction. However, in contrast to the second inner string wire 420, the second outer string wire 440 has a larger elastic modulus in the direction parallel to the first direction than in the direction perpendicular to the first direction, and thus, the second outer string wire 440 is more likely to deform in the direction perpendicular to the first direction than in the direction parallel to the first direction, thereby pushing the lens to move in the direction perpendicular to the first direction to compensate for the offset of the lens due to the shake in the direction perpendicular to the first direction. Optimally, the second outer wire 440 only generates thrust perpendicular to the first direction, and controls movement of the lens in the perpendicular to the first direction.
And like the second inner wires 420, the second outer wires 440 are also provided with four, and two adjacent second outer wires 440 are disposed at substantially 90 °.
Referring to fig. 2 and fig. 4 to 7, the electromagnetic assembly 500 includes a carrier 510, an AF (Auto Focus) coil 520, a mounting frame 530, a magnet set and an OIS coil set, the AF coil 520 is wound on the carrier 510, the magnet set is arranged on the mounting frame 530, the mounting frame 530 is disposed on the periphery of the carrier 510, the mounting frame 530 and the carrier 510 are both located between the upper spring plate 300 and the lower spring plate 400, and one side of the mounting frame 530 and the carrier 510 is connected with the upper spring plate 300, and the other side of the mounting frame 530 and the carrier 510 is connected with the lower spring plate 400. Specifically, in the upper spring 300, the first inner wire 320 is connected to the carrier 510, and the first outer wire 340 is connected to the mounting frame 530. In the lower spring 400, the second inner wire 420 is connected to the carrier 510 and the second outer wire 540 is connected to the mounting frame 530.
The OIS coil group is disposed at a position corresponding to the magnet group. Moreover, the direction from the OIS coil group to the magnet group is perpendicular to the first direction, so that the height of the impact-resistant OIS voice coil motor in the first direction can be reduced, and the impact-resistant OIS voice coil motor is lighter and thinner. Of course, in other embodiments, the OIS coil group may be stacked on the magnet group in the first direction.
The lens is connected with the carrier 510, and the AF coil 520 and the magnet group cooperate to generate an ampere force that deforms the first inner wire 320 and the second inner wire 420 in a direction parallel to the first direction, so as to push the carrier 510 carrying the lens to move in a direction parallel to the first direction, thereby realizing automatic focusing. The OIS coil set and the magnet set cooperate to generate an ampere force that deforms the first outer wire 340 and the second outer wire 440 in a direction perpendicular to the first direction, so as to push the carrier 510 carrying the lens to move in a direction perpendicular to the first direction, thereby realizing an anti-shake function.
Further, each side wall of the mounting frame 530 is provided with a bar-shaped groove 532, and the magnet group comprises a plurality of magnets 540, and the plurality of magnets 540 are arranged in the plurality of bar-shaped grooves 532 in a one-to-one correspondence manner. The OIS coil set includes a plurality of OIS coils 550, the OIS coils 550 are respectively located in the corners of the housing 100, and the OIS coils 550 are disposed in one-to-one correspondence with the magnets 540.
In the present embodiment, four bar grooves 532 are provided, and the extending directions of two adjacent bar grooves 532 are perpendicular. Accordingly, the number of magnets 540 and OIS coils 550 is also four. The OIS coil 550 includes a reference surface 552, the reference surface 552 being formed by winding a wire of the OIS coil 550, the reference surfaces of adjacent OIS coils 550 being perpendicular to each other. In other embodiments, the number of bar slots 532, magnets 540, and OIS coils 550 may also be 2, 6, etc.
In the embodiment shown in fig. 6, the magnets 540 are elongated and perpendicular to the OIS coils 550 disposed correspondingly, and the reference surface 552 of each OIS coil 550 is parallel to the surface of the corresponding side plate 110 adjacent to the cavity 102. That is, for the impact-resistant OIS voice coil motor in this embodiment, the OIS coil sets cooperate with the magnet sets to urge the lens-mounted carrier 510 to move along the X-axis and the Y-axis.
In the embodiment shown in fig. 8, the magnet 540 is bent, the magnet 540 includes a first magnet portion 542 and a second magnet portion 544, the second magnet portion 544 is disposed in the corresponding bar slot 532, an included angle is formed between the first magnet portion 542 and the second magnet portion 544, and the first magnet portion 542 is disposed perpendicular to the OIS coil 550 disposed correspondingly. In this embodiment, the angle between the first magnet portion 542 and the second magnet portion 544 is 120 ° -150 °, in particular 135 °. That is, the reference surface 552 of the OIS coil 550 is at an angle of 30 ° -60 ° to the side of the corresponding side plate 110 adjacent to the cavity 102. And when the angle between the first magnet portion 542 and the second magnet portion 544 is 135 °, the angle between the reference surface 552 and the side of the corresponding side plate 110 adjacent to the cavity 102 is 45 °. For the impact resistant OIS voice coil motor of the embodiment shown in fig. 8, the OIS coil assembly cooperates with the magnet assembly to urge the lens-carrying carrier 510 along the V-axis and W-axis.
As shown in fig. 1, 2 and 6, the anti-impact OIS voice coil motor further includes a circuit board 600, and a portion of the circuit board 600 is accommodated in the cavity 102 and electrically connected to the OIS coil assembly. Meanwhile, the circuit board 600 is also electrically connected to the AF coil 520 through the upper spring piece 300 or the lower spring piece 400. Of course, the circuit board 600 may also be electrically connected to both the upper spring 300 and the lower spring 400. In particular, in the present embodiment, the circuit board 600 is located between the OIS coil set and the side plate 110 of the housing 100 to further reduce the height of the anti-impact OIS voice coil motor in the first direction. In other embodiments, the circuit board 600 may be disposed in other locations, such as between the upper dome 300 and the side of the housing 100 that is closed.
The structure of the circuit board 600 exposed out of the casing 100 is a pin structure of the circuit board 600, and is used for connecting with other circuit boards in the camera module. It will be appreciated that in other embodiments, the circuit board 600 may be omitted, and the AF coil 520 and OIS coil set may be directly electrically connected to the rest of the circuit boards in the camera module.
The impact-resistant OIS voice coil motor of the present embodiment includes at least the following advantages:
1. the linear suspension wire for anti-shake on the traditional voice coil motor is omitted, and the automatic focusing and anti-shake functions can be realized only through the upper elastic sheet 300 and the lower elastic sheet 400, so that the defects that the linear suspension wire is not impact-resistant and is easy to break are overcome.
2. The production difficulty of the linear type suspension wires is high, the production cost is high, the technical difficulty is reduced by eliminating the linear type suspension wires, and the production cost is also reduced.
3. The upper spring plate 300 and the lower spring plate 400 are fixed on the base 200, and are connected with the shell by the traditional voice coil motor, and compared with the connection of the lower spring plate and the base, the assembly process of the impact-resistant OIS voice coil motor is simplified, and the matching tolerance during assembly is reduced.
4. The direction from the OIS coil group to the magnet group is perpendicular to the first direction, so that the height of the impact-resistant OIS voice coil motor in the first direction is reduced, and the impact-resistant OIS voice coil motor is lighter and thinner.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (7)
1. An impact resistant OIS voice coil motor, comprising:
a base;
the shell is arranged on the base and is enclosed with the base to form a cavity;
an electromagnetic assembly received within the cavity;
the upper elastic sheet is accommodated in the cavity and connected with the base, and under the action of the electromagnetic assembly, the upper elastic sheet can generate thrust parallel to a first direction and thrust perpendicular to the first direction, and the first direction is parallel to the axial direction of the impact-resistant OIS voice coil motor; the lower elastic piece is accommodated in the cavity, the lower elastic piece is connected with the base, the lower elastic piece and the upper elastic piece are arranged at intervals along the first direction, and under the action of the electromagnetic assembly, the lower elastic piece can generate thrust parallel to the first direction and thrust perpendicular to the first direction;
the base comprises a fixed plate and a connecting column arranged on one side of the fixed plate, the shell is arranged on the fixed plate, the connecting column is accommodated in the cavity and extends along the first direction, the upper elastic sheet is connected with one end, far away from the fixed plate, of the connecting column, and the lower elastic sheet is connected with the fixed plate;
the upper elastic piece comprises a first inner ring, a first inner chord wire, a first outer ring and a first outer chord wire, the first outer ring is arranged on the periphery of the first inner ring, the first inner chord wire is positioned between the first inner ring and the first outer ring, two ends of the first inner chord wire are respectively connected with the first inner ring and the first outer ring, the first inner chord wire can generate thrust parallel to the first direction, two ends of the first outer chord wire are respectively connected with the outer side wall of the first outer ring and the connecting column, and the first outer chord wire can generate thrust perpendicular to the first direction;
the lower elastic piece comprises a second inner ring, a second inner chord wire, a second outer ring and a second outer chord wire, the second outer ring is arranged on the periphery of the second inner ring, the second inner chord wire is positioned between the second inner ring and the second outer ring, two ends of the second inner chord wire are respectively connected with the second inner ring and the second outer ring, the second inner chord wire can generate thrust parallel to the first direction, two ends of the second outer chord wire are respectively connected with the outer side wall of the second outer ring and the fixing plate, and the second outer chord wire can generate thrust perpendicular to the first direction;
the voice coil motor further comprises a circuit board, part of the structure of the circuit board is accommodated in the cavity, and the circuit board is electrically connected with the electromagnetic assembly and at least one of the upper elastic sheet and the lower elastic sheet.
2. The anti-impact OIS voice coil motor according to claim 1, wherein the electromagnetic assembly comprises a carrier, an AF coil, a mounting frame, a magnet set and an OIS coil set, the AF coil is wound on the carrier, the magnet set is arranged on the mounting frame, the mounting frame is arranged on the periphery of the carrier, the mounting frame and the carrier are both located between the upper spring plate and the lower spring plate, and the OIS coil set is arranged at a position corresponding to the magnet set.
3. The anti-shock OIS voice coil motor according to claim 2, wherein the OIS coil set to magnet set direction is perpendicular to the first direction.
4. The anti-impact OIS voice coil motor according to claim 2, wherein the mounting frame is provided with four bar grooves, the extending directions of two adjacent bar grooves are perpendicular, the magnet group comprises four magnets, the magnets are arranged in the four bar grooves in a one-to-one correspondence manner, the OIS coil group comprises four OIS coils, and the four OIS coils are respectively arranged in four corners of the housing and are arranged in a one-to-one correspondence manner with the four magnets.
5. The anti-impact OIS voice coil motor according to claim 4, wherein the housing is square and includes four side plates connected in sequence, and the four OIS coils are arranged in one-to-one correspondence with the four side plates;
the OIS coils comprise reference surfaces formed by winding wires of the OIS coils, and the reference surfaces of each OIS coil are parallel to one surface of the corresponding side plate, which is close to the cavity.
6. A camera module, comprising:
an impact resistant OIS voice coil motor according to any one of claims 1 to 5; and
and the lens is arranged in the anti-impact OIS voice coil motor in a penetrating way.
7. An electronic product comprising the camera module of claim 6.
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| CN201810210131.0A CN108155771B (en) | 2018-03-14 | 2018-03-14 | Impact-resistant OIS voice coil motor, camera module and electronic product |
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| CN201810210131.0A CN108155771B (en) | 2018-03-14 | 2018-03-14 | Impact-resistant OIS voice coil motor, camera module and electronic product |
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| CN108155771B true CN108155771B (en) | 2023-07-14 |
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| CN108832758A (en) * | 2018-06-19 | 2018-11-16 | 信利光电股份有限公司 | A kind of flat elastic piece and voice coil motor |
| CN111130304A (en) * | 2020-01-21 | 2020-05-08 | 新思考电机有限公司 | Voice coil motor with five-axis OIS structure, photographic device and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104283396A (en) * | 2014-10-21 | 2015-01-14 | 深圳市世尊科技有限公司 | Voice coil motor for achieving optical vibration prevention through transverse movement |
| CN105305773A (en) * | 2015-10-30 | 2016-02-03 | 金龙机电股份有限公司东莞分公司 | Anti-shake voice coil motor |
| CN105899990A (en) * | 2014-01-02 | 2016-08-24 | Lg伊诺特有限公司 | Lens driving device and camera module comprising same |
| CN106817007A (en) * | 2017-03-30 | 2017-06-09 | 信利光电股份有限公司 | A kind of OIS voice coil motors |
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| CN114785916B (en) * | 2014-01-03 | 2024-01-12 | Lg伊诺特有限公司 | Voice coil motor and camera module |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105899990A (en) * | 2014-01-02 | 2016-08-24 | Lg伊诺特有限公司 | Lens driving device and camera module comprising same |
| CN104283396A (en) * | 2014-10-21 | 2015-01-14 | 深圳市世尊科技有限公司 | Voice coil motor for achieving optical vibration prevention through transverse movement |
| CN105305773A (en) * | 2015-10-30 | 2016-02-03 | 金龙机电股份有限公司东莞分公司 | Anti-shake voice coil motor |
| CN106817007A (en) * | 2017-03-30 | 2017-06-09 | 信利光电股份有限公司 | A kind of OIS voice coil motors |
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