Miniaturized anti-shake motor and lens module

Abstract

The utility model relates to the technical field of optical anti-shake, in particular to a miniaturized anti-shake motor and a lens module, which comprise a fixed part, a lens carrier and an anti-shake compensation assembly, the lens carrier is movably arranged in the fixed part, the anti-shake compensation assembly comprises an AF coil and an OIS substrate, and the AF coil and the OIS substrate are respectively and electrically connected with a base; according to the anti-shake motor, the AF coil is directly sleeved on the lens carrier, a frame component in a conventional anti-shake motor is abandoned, the internal space structure of the anti-shake motor is optimized, and under the same performance condition, the size of the anti-shake motor can be reduced, and miniaturization and light weight of the anti-shake motor are realized. Meanwhile, the AF coil and the OIS substrate are in power supply and signal communication with the base respectively, a suspension wire part in a conventional anti-shake motor is omitted, the situation that a suspension wire is broken is avoided, the use quality and durability of the anti-shake motor can be improved, and the manufacturing difficulty and manufacturing cost of the anti-shake motor can also be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of optical image stabilization, and particularly relates to a miniaturized image stabilization motor and a lens module. Background Art

[0002] At present, most traditional image stabilization motors are three-axis image stabilization motors, that is, they have both an OIS compensation moving part and an AF compensation moving part at the same time. The conventional design is to set the AF compensation moving part on a frame, and electrically connect the AF compensation moving part with the base through a suspension wire. At the same time, a lens carrier and an OIS compensation moving part are surrounded inside the frame, or the AF compensation moving part is set inside the OIS compensation moving part to achieve the purpose of three-axis compensation image stabilization.

[0003] However, in order to realize the relative independent motion compensation between the OIS compensation moving part and the AF compensation moving part, a certain space needs to be reserved between the OIS compensation moving part and the AF compensation moving part, and the frame itself also needs to occupy a certain space volume, resulting in the overall size of the image stabilization motor not being easy to shrink, and it is impossible to achieve miniaturization and light weight. At the same time, during the process of motion compensation, the suspension wire may break, resulting in the failure of motion compensation and affecting the imaging use quality and durability.

[0004] It should be noted that the information disclosed in this background art section is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0005] In order to solve the technical problems that the conventional image stabilization motor cannot achieve miniaturization and light weight, the utility model provides a miniaturized image stabilization motor, which includes a fixing part, a lens carrier and an image stabilization compensation component. The fixing part includes a base and a top cover that are covered with each other, and the lens carrier is movably arranged inside the fixing part.

[0006] The image stabilization compensation component includes an AF coil and an OIS substrate. The AF coil is an annular coil, the AF coil is sleeved on the lens carrier, the OIS substrate is sleeved on the lens carrier, and the AF coil and the OIS substrate are respectively electrically connected with the base.

[0007] Furthermore, the miniaturized image stabilization motor further includes a magnet component, the magnet component includes a first magnet component and a second magnet component, the first magnet component is arranged on the base and below the AF coil, and the second magnet component is arranged on the inner side wall of the top cover.

[0008] Further, the number of the first magnet components is 4, and the 4 first magnet components are respectively arranged on the base and spaced along the peripheral sides of the base, and the 4 first magnet components are all located below the AF coil.

[0009] Further, an OIS coil is arranged on the OIS substrate at a position corresponding to the second magnet component, and the OIS coil is electrically connected to the OIS substrate.

[0010] Further, the number of the second magnet components is 4, and the 4 second magnet components are respectively arranged on the peripheral side walls inside the top cover, and the number of the OIS coils is equal to the number of the second magnet components.

[0011] Further, the miniaturized anti-shake motor further includes a first elastic piece and a second elastic piece. The first elastic piece is arranged between the lens carrier and the top cover, and the first elastic piece is respectively connected to the lens carrier and the top cover;

[0012] The second elastic piece is arranged between the lens carrier and the base, the second elastic piece is respectively connected between the lens carrier and the base, the AF coil and the OIS substrate are respectively electrically connected to the second elastic piece, and the second elastic piece is electrically connected to the base.

[0013] Further, the first elastic piece includes a first connecting portion, a first deformation portion and a second connecting portion. The first connecting portion is connected to the lens carrier, two ends of the first deformation portion are respectively connected to the first connecting portion and the second connecting portion, and the second connecting portion is connected to the top cover;

[0014] The second elastic piece includes a third connecting portion, a second deformation portion and a fourth connecting portion. The third connecting portion is connected to the lens carrier, two ends of the second deformation portion are respectively connected to the third connecting portion and the fourth connecting portion, and the fourth connecting portion is connected to the base.

[0015] Further, both the first deformation portion and the second deformation portion are S-shaped.

[0016] Further, the ratio of the width B to the length A of the cross-sectional area of each of the first deformation portion and the second deformation portion is between 1 and 3.

[0017] Further, a lens module of the present utility model includes the miniaturized anti-shake motor as described in any one of the above.

[0018] Based on the above, the miniaturized anti-shake motor and lens module provided by the present utility model, compared with the prior art, by directly sleeving the AF coil on the lens carrier, eliminating the frame component in the conventional anti-shake motor, optimizing the internal space structure of the anti-shake motor, under the same performance conditions, can reduce the volume of the anti-shake motor, and achieve the miniaturization and light weight of the anti-shake motor. At the same time, the AF coil and the OIS substrate are respectively connected to the base for power supply and signal communication, canceling the suspension wire component in the conventional anti-shake motor, avoiding the situation of suspension wire breakage, which can not only improve the use quality and durability of the anti-shake motor, but also reduce the manufacturing process difficulty and manufacturing cost of the anti-shake motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In the following description, the positional relationship of the drawings, unless otherwise specified, is based on the direction in which the components are shown in the drawings.

[0020] Figure 1 Exploded structural schematic diagram of the miniaturized anti-shake motor provided by an embodiment of the present utility model;

[0021] Figure 2 Structural schematic diagram of the lens carrier provided by an embodiment of the present utility model;

[0022] Figure 3 Structural schematic diagram of the base provided by an embodiment of the present utility model;

[0023] Figure 4 Structural schematic diagram of the connection between the lens carrier and the first elastic piece provided by an embodiment of the present utility model;

[0024] Figure 5 Structural schematic diagram of the connection between the lens carrier and the second elastic piece provided by an embodiment of the present utility model;

[0025] Figure 6 Structural schematic diagram of the first elastic piece provided by an embodiment of the present utility model;

[0026] Figure 7 Structural schematic diagram of the connection of the second elastic piece provided by an embodiment of the present utility model;

[0027] Figure 8 Cross-sectional structural schematic diagram of the first deformation part and / or the second deformation part provided by an embodiment of the present utility model.

[0028] Reference numerals:

[0029] Specific embodiments

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, the term "comprising" and any variation thereof mean "including at least".

[0032] Please refer to Figure 1 and Figure 2 , Figure 1 which is an exploded structural schematic diagram of a miniaturized anti-shake motor provided by an embodiment of the present utility model; Figure 2 which is a structural schematic diagram of a lens carrier provided by an embodiment of the present utility model.

[0033] To solve the above technical problems that the conventional anti-shake motor cannot be miniaturized and light-weighted, or to achieve at least one of the above advantages or other advantages, an embodiment of the present utility model provides a miniaturized anti-shake motor. As shown in the figure, the miniaturized anti-shake motor includes a fixing part 10 and a lens carrier 20.

[0034] The fixing part 10 includes a base 11 and a top cover 12 which are covered with each other. Power supply and signal lines are pre-buried inside the base 11. A through hole 13 is opened at the center of the top cover 12 for light to enter for imaging.

[0035] The lens carrier 20 is movably arranged within the fixed part 10. Specifically, a lens (not shown in the figure) is embraced within the lens carrier 20 for imaging. The lens carrier 20 is capable of moving relative to the base 11 in the three axial directions of the Z-axis and / or the X-axis and / or the Y-axis, thereby driving the lens carrier 20 to perform motion compensation in the three axial directions of the Z-axis and / or the X-axis and / or the Y-axis, achieving the purpose of eliminating jitter and improving imaging quality.

[0036] An anti-shake compensation component 30 is arranged on the lens carrier 20. In specific implementation, the anti-shake compensation component 30 includes an AF coil 31 and an OIS substrate 32. The AF coil 31 is an annular coil. The AF coil 31 is sleeved on the lens carrier 20 and the AF coil 31 is capable of driving the lens carrier 20 to move in the Z-axis direction.

[0037] The OIS substrate 32 is also sleeved on the lens carrier 20, and the OIS substrate 32 is located above the AF coil 31. The AF coil 31 is connected to the OIS substrate 32. At the same time, the AF coil 31 and the OIS substrate 32 are respectively electrically connected to the base 11.

[0038] Certainly, in some other embodiments, the AF coil 31 and the OIS substrate 32 may not be connected to each other, as long as the AF coil 31 and the OIS substrate 32 can be respectively sleeved on the lens carrier 20 and are respectively electrically connected to the base 11, and no limitation is imposed on this.

[0039] By directly sleeving the AF coil 31 on the lens carrier 20, the frame components in the conventional anti-shake motor are abandoned, the internal space structure of the anti-shake motor is optimized, and under the same performance conditions, the volume of the anti-shake motor can be greatly reduced, realizing the miniaturization and light weight of the anti-shake motor.

[0040] Please combine Figure 1 Refer to Figure 3 , in some preferred embodiments, as shown in the figure, this miniaturized anti-shake motor further includes a magnet component 40. In specific implementation, the magnet component 40 includes a first magnet component 41 and a second magnet component 42. The first magnet component 41 is arranged on the base 11 and is located below the AF coil 31. The second magnet component 42 is arranged on the inner side wall of the top cover 12.

[0041] Preferably, the polarities of the first magnet component 41 and the second magnet component 42 are both horizontally arranged and face the same direction, so that the magnetic field between the first magnet component 41 and the second magnet component 42 is more uniform and dense, in order to increase the magnetic thrust in the Z-axis direction.

[0042] After the AF coil 31 is energized, under the strong magnetic field of the first magnet assembly 41 and the second magnet assembly 42, an Ampere force is generated to cut the magnetic induction line, thereby driving the AF coil 31 to move along the Z-axis direction, and then driving the lens carrier 20 to perform motion compensation along the Z-axis direction, so as to achieve the purpose of focusing and anti-shake.

[0043] Further, the number of the first magnet assemblies 41 is 4. The 4 first magnet assemblies 41 are respectively arranged on the base 11 and are spaced along the peripheral sides of the base 11, further improving the balance of the lens carrier 20 during the motion compensation along the Z-axis direction and improving the imaging quality.

[0044] An OIS coil 33 is arranged on the OIS substrate 32 at the position corresponding to the second magnet assembly 42. The OIS coil 33 is electrically connected to the OIS substrate 32. After the OIS coil 33 is energized, under the strong magnetic field of the second magnet assembly 42, an Ampere force is generated to cut the magnetic field, thereby driving the OIS coil 33 to move along the X-axis and / or Y-axis directions, and then driving the lens carrier 20 to perform motion compensation along the X-axis and / or Y-axis directions, so as to achieve the purpose of anti-shake and focusing.

[0045] Further, the number of the second magnet assemblies 42 is 4. The 4 second magnet assemblies 42 are respectively arranged on the peripheral side walls inside the top cover 12. The number and the setting positions of the OIS coils 33 correspond to the number and the setting positions of the second magnet assemblies 42. It can improve the magnetic thrust of the lens carrier 20 during the motion compensation along the X-axis and / or Y-axis directions and realize the improvement of the anti-shake efficiency and speed.

[0046] Please combine Figure 1 Refer to Figures 4 - 7 , in some preferred embodiments, as shown in the figure, the miniaturized anti-shake motor further includes a first elastic piece 50 and a second elastic piece 60. The first elastic piece 50 is arranged between the lens carrier 20 and the top cover 12. The first elastic piece 50 is respectively connected to the lens carrier 20 and the top cover 12. Specifically, the first elastic piece 50 includes a first connecting portion 51, a first deforming portion 52 and a second connecting portion 53. The first connecting portion 51 is connected to the lens carrier 20. The two ends of the first deforming portion 52 are respectively connected to the first connecting portion 51 and the second connecting portion 53. The second connecting portion 53 is connected to the top cover 12. The first elastic piece 50 can provide a pre-pressure to place the lens carrier 20 in a relative initial position. At the same time, during the process that the AF coil 31 and / or the OIS coil 33 are energized to drive the lens carrier 20 to perform motion compensation along the X-axis and / or Y-axis and / or Z-axis directions, the first deforming portion 52 can deform to provide a restoring force.

[0047] The second elastic piece 60 is arranged between the lens carrier 20 and the base 11. The second elastic piece 60 is respectively connected between the lens carrier 20 and the base 11. And the AF coil 31 and the OIS substrate 32 are respectively electrically connected to the second elastic piece 60. And the second elastic piece 60 is electrically connected to the base 11. In specific implementation, the second elastic piece 60 includes a third connection part 61, a second deformation part 62 and a fourth connection part 63. The third connection part 61 is connected to the lens carrier 20. Two ends of the second deformation part 62 are respectively connected to the third connection part 61 and the fourth connection part 63. The fourth connection part 63 is connected to the base 11. The second elastic piece 60 can cooperate with the first elastic piece 50 to place the lens carrier 20 in a relative initial position. At the same time, when the AF coil 31 and / or the OIS coil 33 is energized and the lens carrier 20 is pushed to perform motion compensation in the three-axis directions of the Z-axis and / or the X-axis and / or the Y-axis, the second deformation part 62 can also deform to provide a restoring force.

[0048] On this basis, the AF coil 31 and the OIS substrate 32 are respectively electrically connected to the base 11 through the second elastic piece 60, thereby canceling the suspension wire component in the conventional anti-shake motor and avoiding the situation of suspension wire breakage. This can not only improve the use quality and durability of the anti-shake motor, but also reduce the manufacturing process difficulty and manufacturing cost of the anti-shake motor.

[0049] Preferably, both the first deformation part 52 and the second deformation part 62 are S-shaped, which is beneficial to deformation and providing a restoring force. Of course, it can also be designed into other shapes according to actual needs, and there is no limitation on this.

[0050] In some preferred embodiments, as Figure 8 shown, the ratio of the width B to the length A of the cross-sectional area of each of the first deformation part 52 and the second deformation part 62 is between 1 and 3. It should be noted that there are also elastic pieces in the current conventional anti-shake motors, and their functions are also to be able to deform and provide pre-pressure, etc. However, due to the existence of the "frame component" in the conventional solutions, the elastic pieces only bear the force in the Z-axis direction and provide the deformation elasticity and pre-pressure in the Z-axis direction. Therefore, the ratio of their width to length is usually between 0.3 and 0.8, which is beneficial to deformation and providing pre-pressure in the Z-axis direction.

[0051] In the technical solution of the miniaturized anti-shake motor provided in this embodiment, since the "frame component" is canceled, the lens carrier 20 needs to simultaneously meet the motion compensation in the three-axis directions of the Z-axis, the X-axis and the Y-axis, that is, it is required that the values (stiffness coefficients) of the first deformation part 52 and the second deformation part 62 in the three-axis directions of the Z-axis, the X-axis and the Y-axis are similar.

[0052] Therefore, the ratio of the width B to the length A of the cross-sectional area of each of the first deformation part 52 and the second deformation part 62 is between 1 and 3. At this time 、 and is similar and can meet the requirement that the lens carrier 20 can perform motion compensation in three axes along the Z-axis and / or X-axis and / or Y-axis directions.

[0053] In some preferred embodiments, the present utility model further provides a lens module, which includes the above-mentioned miniaturized anti-shake motor.

[0054] In summary, for the miniaturized anti-shake motor and the lens module provided by the present utility model, compared with the prior art, by directly sleeving the AF coil on the lens carrier, the frame component in the conventional anti-shake motor is abandoned, the internal space structure of the anti-shake motor is optimized, and under the same performance conditions, the volume of the anti-shake motor can be reduced, realizing the miniaturization and light weight of the anti-shake motor. At the same time, the AF coil and the OIS substrate are respectively connected to the base for power supply and signal communication, canceling the suspension wire component in the conventional anti-shake motor, avoiding the situation of suspension wire breakage, which can not only improve the use quality and durability of the anti-shake motor, but also reduce the manufacturing process difficulty and manufacturing cost of the anti-shake motor.

[0055] Although terms such as anti-shake compensation component are used more in this article, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

[0056] In addition, those skilled in the art should understand that although there are many problems in the prior art, each embodiment or technical solution of the present utility model can be improved only in one or several aspects, and it is not necessary to solve all the technical problems listed in the prior art or the background art at the same time. Those skilled in the art should understand that the content not mentioned in a claim should not be used as a limitation to that claim.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A miniaturized anti-shake motor, characterized in that: include The fixed part comprises a base and a top cover which cover each other; A lens carrier, the lens carrier being movably disposed in the fixing portion; The anti-shake compensation component comprises an AF coil and an OIS substrate, the AF coil is a ring coil, the AF coil is sleeved on the lens carrier, the OIS substrate is sleeved on the lens carrier, and the AF coil and the OIS substrate are electrically connected to the base respectively.

2. The miniaturized anti-shake motor according to claim 1, characterized in that: The miniaturized anti-shake motor also includes a magnet assembly, which includes a first magnet assembly and a second magnet assembly. The first magnet assembly is arranged on the base and located below the AF coil, and the second magnet assembly is arranged on the inner side wall of the top cover.

3. The miniaturized anti-shake motor according to claim 2, characterized in that: The number of the first magnet assemblies is four, and the four first magnet assemblies are respectively disposed on the base and arranged at intervals along the four sides of the base. The four first magnet assemblies are all located below the AF coil.

4. The miniaturized anti-shake motor according to claim 2, characterized in that: An OIS coil is disposed on the OIS substrate at a position corresponding to the second magnet assembly, and the OIS coil is electrically connected to the OIS substrate.

5. The miniaturized anti-shake motor according to claim 4, characterized in that: The number of the second magnet assemblies is 4, and the 4 second magnet assemblies are respectively arranged on the four side walls on the inner side of the top cover, and the number of the OIS coils is equal to the number of the second magnet assemblies.

6. The miniaturized anti-shake motor according to claim 1, characterized in that: The miniaturized anti-shake motor further includes a first spring sheet and a second spring sheet, wherein the first spring sheet is disposed between the lens carrier and the top cover, and the first spring sheet is connected to the lens carrier and the top cover respectively; The second spring piece is arranged between the lens carrier and the base, the second spring piece is respectively connected between the lens carrier and the base, the AF coil and the OIS substrate are respectively electrically connected to the second spring piece, and the second spring piece is electrically connected to the base.

7. The miniaturized anti-shake motor according to claim 6, characterized in that: The first elastic piece comprises a first connecting portion, a first deforming portion, and a second connecting portion, the first connecting portion is connected to the lens carrier, two ends of the first deforming portion are respectively connected to the first connecting portion and the second connecting portion, and the second connecting portion is connected to the top cover; The second elastic piece includes a third connecting portion, a second deformable portion and a fourth connecting portion, the third connecting portion is connected to the lens carrier, two ends of the second deformable portion are respectively connected to the third connecting portion and the fourth connecting portion, and the fourth connecting portion is connected to the base.

8. The miniaturized anti-shake motor according to claim 7, characterized in that: The first deformation portion and the second deformation portion are both S-shaped.

9. The miniaturized anti-shake motor according to claim 7, characterized in that: The ratio of the width B to the length A of the cross-sectional area of ​​each of the first deformation portion and the second deformation portion is between 1 and 3.

10. A lens module, characterized in that: It comprises a miniaturized anti-shake motor as described in any one of claims 1 to 9.

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