High-stability anti-shake motor
By designing an anti-shake motor with rolling pit + wire trough, the noise and lag caused by free displacement of the rolling element is solved, and high stability and excellent imaging effects are achieved.
Patent Information
- Application Number
- CN202420624531.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-03-28
AI Technical Summary
When existing anti-shake motors do not perform anti-shake operation, the rolling element may be freely displaced, resulting in noise and lag, affecting the imaging quality.
A high-stability anti-shake motor is designed, using the form of a rolling pit + wire trough. The rolling element can only roll in situ within the rolling pit to avoid displacement.
It effectively prevents noise generated by rolling body displacement, avoids lag, and improves imaging quality.
Smart Images
Figure CN222674057U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of optical anti-shake, in particular to an anti-shake motor with high stability. Background Art
[0002] If the camera shakes during shooting or the subject moves, causing abnormal light displacement, the image will be blurred, especially when using a high-resolution camera in low illumination or high zoom. The conventional way to alleviate the problem of shaking is to use optical image stabilization technology: by detecting the vibration of the system and compensating for it, the impact of hand shaking can be reduced.
[0003] In order to make the lens "float" relatively to the motor, the existing anti-shake motors mostly use rolling elements in combination with rolling grooves. When the lens needs to be anti-shake, the rolling element rolls in the rolling groove, thereby driving the lens to perform anti-shake operations. However, due to the limitations of the basic architecture, when the conventional anti-shake motor is not performing anti-shake operations, the rolling element may freely move in the rolling groove, thereby generating noise and even "stuttering", which may affect the image quality.
[0004] It should be noted that the information disclosed in this background technology 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 suggestion in any form that the information constitutes prior art already known to a person skilled in the art. Utility Model Content
[0005] In order to solve the above-mentioned problem of displacement of the rolling element in the rolling groove, the utility model provides a high-stability anti-shake motor, which includes: a base, an AF movable part and an OIS movable part;
[0006] The AF movable part is arranged in the base, the AF movable part is movably connected to the base, at least three first rolling pits are arranged on the AF movable part, each of the first rolling pits is provided with a first rolling body, the first rolling body can roll in the first rolling pit, and the first rolling body is movably connected to the base;
[0007] The OIS movable part is located in the AF movable part, and the OIS movable part is movably connected to the AF movable part.
[0008] Furthermore, the high-stability anti-shake motor also includes a coil soft board, the coil soft board is attached to the base, an AF coil and two OIS coils are attached to the coil soft board, and the AF coil is arranged opposite to one of the OIS coils.
[0009] Furthermore, the AF movable part includes an AF frame and an AF magnet, the AF frame is arranged in the base, the AF frame is movably connected to the base, the AF magnet is arranged on the side wall of the AF frame, the setting position of the AF magnet corresponds to the AF coil, and the first rolling pit is arranged on the side of the AF frame facing the base.
[0010] Further, the OIS movable part includes a mirror seat and two OIS magnets, the mirror seat is arranged in the AF frame, the mirror seat is movably connected to the AF frame, the two OIS magnets are attached to the side wall of the mirror seat, and the arrangement positions of the two OIS magnets correspond to the two OIS coils;
[0011] The OIS movable part further includes a seat, which is arranged between the AF frame and the lens seat, and the seat is movably connected to the AF frame and the lens seat respectively.
[0012] Furthermore, the high-stability anti-shake motor further includes a cover plate 90 , which is disposed on the AF frame, and a plurality of buffer members 100 are disposed on the cover plate.
[0013] Further, the number of the first rolling pits is 10, and the number of the first rolling bodies is the same as the number of the first rolling pits.
[0014] Furthermore, the first rolling body is a ball, and the first rolling pit is in the shape of an inverted truncated cone.
[0015] Furthermore, the first rolling body is a roller, and the first rolling pit is in the shape of an inverted trapezoid.
[0016] Furthermore, a Z-axis sensor IC, an X-axis sensor IC and a Y-axis sensor IC are respectively disposed inside the AF coil and the two OIS coils.
[0017] Furthermore, the high-stability anti-shake motor further includes an outer cover 150 , which covers the base.
[0018] Based on the above, the high-stability anti-shake motor provided by the utility model, compared with the prior art, designs the conventional double grooves into the form of rolling pits + grooves, and the rolling bodies can only roll in place in the rolling pits without displacement; thereby, the noise generated by the free displacement of the rolling bodies in the grooves is effectively prevented; at the same time, it can prevent the jamming phenomenon caused by the rolling bodies being at the end points of the grooves after free displacement, thereby achieving the effect of improving the imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the prior art descriptions. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. The positional relationship described in the drawings in the following description is based on the direction of the components in the drawings unless otherwise specified.
[0020] Figure 1 A schematic diagram of the exploded structure of a high-stability anti-shake motor provided in the first embodiment of the utility model;
[0021] Figure 2 A schematic diagram of the structure of the AF frame and the base provided in the first embodiment of the utility model;
[0022] Figure 3 for Figure 2 Sectional view at AA in the middle;
[0023] Figure 4 A schematic diagram of the structure of the AF framework provided in the first embodiment of the utility model;
[0024] Figure 5 A schematic diagram of the exploded structure of the support and the AF frame provided in the first embodiment of the utility model;
[0025] Figure 6 A schematic diagram of the exploded structure of the mirror base and the support base provided in the first embodiment of the utility model;
[0026] Figure 7 A schematic diagram of the structure of an AF framework provided in the second embodiment of the utility model;
[0027] Figure 8 A schematic diagram of the structure of an AF framework provided in the third embodiment of the present utility model;
[0028] Fig. 9 A schematic diagram of the exploded structure of the support and the AF frame provided in the second or third embodiment of the utility model;
[0029] Fig.10 This is a schematic diagram of the exploded structure of the mirror holder and the support seat provided in the second or third embodiment of the utility model.
[0030] Reference numerals:
[0031] 10-base 20-AF movable part 30-OIS movable part
[0032] 40-coil soft board 50-AF coil 60-OIS coil
[0033] 70-Z-axis sensor IC 80-X-axis sensor IC 90-Y-axis sensor IC
[0034] 100-first rolling pit 110-first rolling element 120-second rolling pit
[0035] 130- second rolling element 140- second wire groove 150- third wire groove
[0036] 160-third rolling pit 170-third rolling element 180-cover plate
[0037] 190- buffer 200- outer cover 21- AF frame
[0038] 22-AF magnet 31-Mirror holder 32-OI S magnet
[0039] 33- bearing seat 34- rolling part DETAILED DESCRIPTION
[0040] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0041] In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance, or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variation thereof all mean "at least including".
[0042] See also Figure 1 and Figure 2 , Figure 1A schematic diagram of the exploded structure of a high-stability anti-shake motor provided in the first embodiment of the utility model; Figure 2 This is a structural schematic diagram of the AF frame and base provided in the first embodiment of the utility model.
[0043] In order to solve the technical problem in the prior art that the rolling body generates noise and jamming, thereby affecting the imaging quality, or to achieve at least one of the above advantages or other advantages, an embodiment of the present invention provides a high-stability anti-shake motor. Figure 1 and Figure 2 As shown in FIG. 1 , the high-stability anti-shake motor includes a base 10 , an AF movable portion 20 and an OIS movable portion 30 .
[0044] A coil soft board 40 is attached to the base 10. In a specific implementation, the coil soft board 40 is attached to the outer wall of the base 10. An AF coil 50 and two OIS coils 60 are attached to the coil soft board 40. A coil slot is provided on the base 10, and the AF coil 50 and the two OIS coils 60 are located in the coil slot. The AF coil 50 is arranged opposite to one of the OIS coils 60, that is, the two OIS coils 60 are adjacent and perpendicular, and are responsible for the X-axis direction and the Y-axis direction respectively.
[0045] It can be understood that a Z-axis sensor IC70, an X-axis sensor IC80 and a Y-axis sensor IC90 are respectively provided inside the AF coil 50 and the two OIS coils 60 for controlling and detecting the movement of the AF movable part 20 and the OIS movable part 30.
[0046] Please combine Figure 1 See also Figure 3 and Figure 4 As shown in the figure, the AF movable part 20 is arranged inside the base 10, and the AF movable part 20 is movably connected to the base 10. At least three first rolling pits 100 are arranged on the AF movable part 20. A first rolling body 110 is arranged in each first rolling pit 100. The first rolling body 110 can roll in place in the first rolling pit 100. The first rolling body 110 is movably connected to the base 10.
[0047] In a specific implementation, the AF movable part 20 includes an AF frame 21 and an AF magnet 22. The AF frame 21 is disposed in the base 10, and the AF frame 21 is movably connected to the base 10. Specifically, the AF frame 21 can move along the Z-axis relative to the base 10. The AF magnet 22 is disposed on the side wall of the AF frame 21, and the setting position of the AF magnet 22 corresponds to the AF coil 50.
[0048] The first rolling pit 100 is disposed on the side of the AF frame 21 facing the base 10. Specifically, the first rolling pit 100 and the AF magnet 22 are on the same side wall and are located on both sides of the AF magnet 22. The base 10 is provided with a first wire groove at a position relative to the first rolling pit 100. When the first rolling body 110 is disposed in the first rolling pit 100, it protrudes from the first rolling pit 100. The first rolling body 110 is rollingly connected to the first wire groove.
[0049] When the AF coil 50 is energized to generate a magnetic field reaction with the AF magnet 22, pushing the AF frame 21 to move along the Z-axis direction, the first rolling body 110 rolls in place in the first rolling pit 100 and is rollingly connected to the wire groove on the base 10, so that the AF frame 21 can stably move along the Z-axis direction.
[0050] The OIS movable part 30 is disposed in the AF movable part 20, and the OIS movable part 30 is movably connected to the AF movable part 20. In a specific implementation, the OIS movable part 30 includes a lens holder 31 and two OIS magnets 32. The lens holder 31 is disposed in the AF frame 21, and the lens holder 31 is movably connected to the AF frame 21. Specifically, the lens holder 31 can move relative to the AF frame along the X-axis direction or the Y-axis direction.
[0051] Two OIS magnets 32 are attached to the side walls of the mirror base 31, and the two OIS magnets 32 are arranged at positions corresponding to the two OIS coils 60. When the OIS coils 60 are energized, they react with the OIS magnets 32 to generate a magnetic field, pushing the mirror base 31 to move along the X-axis direction or the Y-axis direction.
[0052] On the basis of the above, the OIS movable part 30 further includes a seat 33. The seat 33 is disposed between the AF frame 21 and the lens holder 31, and the seat 33 is movably connected to the AF frame 21 and the lens holder 31 respectively.
[0053] Please combine Figure 1 See also Figure 5 and Figure 6 As shown in the figure, in a specific implementation, rolling parts 34 are respectively provided at the four corners of the bearing seat 33, and a second rolling pit 120 is provided at the lower side of the rolling part 34, and a second rolling body 130 is provided in the second rolling pit. A second wire groove 140 is provided at a position corresponding to the second rolling pit 120 of the AF frame 21, and the second rolling body 130 is rollingly connected to the second wire groove 140. A third wire groove 150 is provided at the upper side of the rolling part 34, and a third rolling pit 160 is provided at a position corresponding to the third wire groove 150 of the lens holder 31. The third rolling body 170 in the third rolling pit 160 is rollingly connected to the third wire groove 150.
[0054] When the mirror seat 31 moves along the X-axis direction or the Y-axis direction, the second rolling body 130 and the third rolling body 170 roll in place in the second rolling pit 120 and the third rolling pit 160 respectively, and are rollingly connected to the second wire groove 140 and the third wire groove 150, so that the mirror seat 31 can stably move along the X-axis direction or the Y-axis direction.
[0055] It should be noted that in order to improve the stability of the lens holder 31 in this embodiment, a third rolling pit 160 is set on the side of the lens holder 31 facing the support seat 33, and this feature should not be regarded as a limitation to the scheme. The relative positions of the second wire groove 140, the third wire groove 150, the second rolling pit 120 and the third rolling pit 160 can be adjusted according to actual conditions (for example, the second rolling pit 120 and the third rolling pit 160 are respectively provided on the upper and lower sides of the rolling portion 34, and the third wire groove 150 and the second wire groove 140 are provided at the corresponding positions of the AF frame 21 and the lens holder 31, etc.), as long as it can ensure that the upper and lower sides of the support seat 33 are guided in the X-axis direction and the Y-axis direction respectively, they are all within the protection scope of this embodiment.
[0056] In some preferred embodiments, the high-stability anti-shake motor further includes a cover plate 180. In specific implementation, the cover plate 180 is disposed on the AF frame 21. A plurality of buffers 190 are disposed on the cover plate 180. When the AF frame 21 moves along the Z-axis direction, a buffer force can be provided for the AF frame 21 to prevent the AF frame 21 from vibrating due to a hard collision, thereby affecting the imaging quality. Preferably, a buffer 190 (not shown in the figure) is also disposed at the bottom of the AF frame 21 to provide a buffer force for the AF frame 21.
[0057] In some preferred embodiments, the number of the first rolling pits 100 is ten, and the number of the first rolling bodies 110 is the same as the number of the first rolling pits 100 .
[0058] Please combine Figure 1 and Figure 2 See also Figure 7 As shown in the figure, in some preferred embodiments, the first rolling body 110 is a ball, and the first rolling pit 100 is designed to be inverted truncated cone shape. In specific implementation, when the ball (i.e., the first rolling body 110) rolls in situ in the inverted truncated cone-shaped first rolling pit 100, the ball is in line contact with the pit wall and in point contact with the pit bottom, which can effectively reduce the friction between the ball and the first rolling pit 100.
[0059] Please combine Figure 1 and Figure 2 See also Figure 8As shown in the figure, in some preferred embodiments, the first rolling body 110 is a roller, and the first rolling pit 100 is in the shape of an inverted trapezoid. In specific implementation, when the roller (i.e., the first rolling body 110) rolls in situ in the first rolling pit 100 in the shape of an inverted trapezoid, the roller and the pit wall are in line contact in the rolling direction, and the two pit walls perpendicular to the rolling direction are in surface contact with each other, which can effectively prevent the roller from turning over when rolling and avoid getting stuck.
[0060] It is understandable that if Fig. 9 and Fig.10 As shown, the second rolling body 130 and the third rolling body 170 can also be designed as balls or rollers. Accordingly, the second rolling pit 120 and the third rolling pit 160 are in the shape of an inverted truncated cone or an inverted trapezoid.
[0061] In some preferred embodiments, the high-stability anti-shake motor further includes an outer cover 200 , and the outer cover 200 covers the base 10 .
[0062] To sum up, the high-stability anti-shake motor provided by the utility model, compared with the prior art, designs the conventional double groove into the form of rolling pit + groove, and the rolling body can only roll in place in the rolling pit without displacement; thereby, the noise generated by the free displacement of the rolling body in the groove is effectively prevented; at the same time, it can prevent the jamming phenomenon caused by the rolling body being at the end point of the groove after free displacement, thereby achieving the effect of improving the imaging quality.
[0063] Although the terms such as rolling pit, rolling body, AF frame, lens seat, bearing seat, etc. are often used in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.
[0064] 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 utility model can be improved in only one or several aspects, without having to solve all the technical problems listed in the prior art or background technology 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 on the claim.
[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A high-stability anti-shake motor, characterized in that: include: Base; an AF movable part, the AF movable part is arranged in the base, the AF movable part is movably connected to the base, at least three first rolling pits are arranged on the AF movable part, each of the first rolling pits is provided with a first rolling body, the first rolling body can roll in the first rolling pit, and the first rolling body is movably connected to the base; The OIS movable part is located inside the AF movable part, and the OIS movable part is movably connected to the AF movable part.
2. The high-stability anti-shake motor according to claim 1, characterized in that: The high-stability anti-shake motor further includes a coil soft board, which is attached to the base, and an AF coil and two OIS coils are attached to the coil soft board, and the AF coil is arranged opposite to one of the OIS coils.
3. The high stability anti-shake motor according to claim 2, characterized in that: The AF movable part includes an AF frame and an AF magnet. The AF frame is arranged in the base. The AF frame is movably connected to the base. The AF magnet is arranged on the side wall of the AF frame. The setting position of the AF magnet corresponds to the AF coil. The first rolling pit is arranged on the side of the AF frame facing the base.
4. The high-stability anti-shake motor according to claim 3, characterized in that: The OIS movable part includes a lens seat and two OIS magnets, the lens seat is arranged in the AF frame, the lens seat is movably connected to the AF frame, the two OIS magnets are attached to the side wall of the lens seat, and the arrangement positions of the two OIS magnets correspond to the two OIS coils; The OIS movable part further includes a seat, which is arranged between the AF frame and the lens seat, and the seat is movably connected to the AF frame and the lens seat respectively.
5. The high-stability anti-shake motor according to claim 3, characterized in that: The high-stability anti-shake motor further comprises a cover plate, which is arranged on the AF frame, and a plurality of buffer members are arranged on the cover plate.
6. The high stability anti-shake motor according to claim 1, characterized in that: The number of the first rolling pits is 10, and the number of the first rolling bodies is the same as the number of the first rolling pits.
7. The high-stability anti-shake motor according to claim 1 or 6, characterized in that: The first rolling element is a ball, and the first rolling pit is in an inverted truncated cone shape.
8. The high-stability anti-shake motor according to claim 1 or 6, characterized in that: The first rolling body is a roller, and the first rolling pit is in an inverted trapezoidal shape.
9. The high-stability anti-shake motor according to claim 2, characterized in that: A Z-axis sensor IC, an X-axis sensor IC, and a Y-axis sensor IC are respectively disposed inside the AF coil and the two OIS coils.
10. The high-stability anti-shake motor according to claim 1, characterized in that: The high-stability anti-shake motor also includes an outer cover, which is covered on the base.