CN117590550A - Anti-shake focusing motor - Google Patents

Anti-shake focusing motor Download PDF

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Publication number
CN117590550A
CN117590550A CN202311724786.7A CN202311724786A CN117590550A CN 117590550 A CN117590550 A CN 117590550A CN 202311724786 A CN202311724786 A CN 202311724786A CN 117590550 A CN117590550 A CN 117590550A
Authority
CN
China
Prior art keywords
suspension
base
elastic arm
elastic
focusing motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311724786.7A
Other languages
Chinese (zh)
Inventor
王林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guoxing Chaogan Chengdu Optoelectronic Technology Co ltd
Original Assignee
Guoxing Chaogan Chengdu Optoelectronic Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guoxing Chaogan Chengdu Optoelectronic Technology Co ltd filed Critical Guoxing Chaogan Chengdu Optoelectronic Technology Co ltd
Priority to CN202311724786.7A priority Critical patent/CN117590550A/en
Publication of CN117590550A publication Critical patent/CN117590550A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
    • G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
    • 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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • G03B13/36—Autofocus systems
    • 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
    • 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
    • H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
    • 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
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0007—Movement of one or more optical elements for control of motion blur
    • 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
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0053—Driving means for the movement of one or more optical element
    • G03B2205/0069—Driving means for the movement of one or more optical element using electromagnetic actuators, e.g. voice coils

Abstract

The invention belongs to the technical field of image equipment, and discloses an anti-shake focusing motor which comprises a first suspension, a second suspension, a first driving component, a base and a second driving component, wherein the first suspension is connected with the second suspension; the first suspension and the second suspension are connected through suspension wires, and an optical device is arranged on the first suspension; the first drive assembly is disposed between the first suspension and the second suspension; a suspension spring plate is arranged between the base and the second suspension; the second drive assembly is disposed between the base and the second suspension. According to the invention, the second suspension is supported by the suspension spring plate, and displacement compensation is realized when shaking occurs, so that the integral shaking prevention and focusing of the camera are well satisfied on the basis of arranging the first suspension and the second suspension, and the influence of arranging the 3D elastic piece on the miniaturized design is avoided.

Description

Anti-shake focusing motor
Technical Field
The invention belongs to the technical field of image equipment, and particularly relates to an anti-shake focusing motor.
Background
The shake is unavoidable when the hand-held camera shoots, which is a common shooting problem that affects the shooting effect of the picture and reduces the quality and the look and feel of the picture. Therefore, it is necessary to add components to the camera to improve the stability of the camera when the camera is held for shooting.
At present, although some cameras can realize anti-shake and focusing, a technical scheme of a 3D elastic member is generally adopted, and the size of the motor is generally relatively large, more and more electronic products are integrated with the camera, and the assembly size of the camera in the electronic products is limited, so that the current technical scheme is not beneficial to realizing miniaturization of the electronic products.
Disclosure of Invention
In order to solve the technical problems, the invention discloses an anti-shake focusing motor, which is used for supporting a second suspension through the arrangement of a suspension spring plate, realizing displacement compensation when shake occurs, well meeting the integral anti-shake and focusing of a camera on the basis of arranging a first suspension and a second suspension, and avoiding the influence of arranging a 3D elastic piece on the miniaturization design.
The specific technical scheme of the invention is as follows:
an anti-shake focus motor, comprising:
the first suspension and the second suspension are connected through suspension wires, and the first suspension is used for bearing an optical device;
a first drive assembly disposed between the first and second suspensions for driving the first suspension to move relative to the second suspension in a first direction, the first direction being parallel to the optical axis;
a suspension spring plate is arranged between the base and the second suspension; and
and the second driving assembly is arranged between the base and the second suspension and is used for driving the second suspension to move along a first plane relative to the base, and the first plane is perpendicular to the optical axis.
The first driving component acts to enable the optical device to move relative to the second suspension, and the suspension wire deforms in the process, so that when the first driving component stops driving, the optical device can be reset under the action of the reset force of the suspension wire; in the suspension wire deformation process, the suspension elastic sheet can keep a certain gap between the second suspension and the base, plays a supporting role to avoid mutual friction caused by contact between the second suspension and the base, and when shaking occurs, the second driving component acts to drive the second suspension to move relative to the base and move along the opposite direction of shaking, so that in the process, the deformation of the suspension elastic sheet can reset the optical device.
Preferably, the suspension elastic sheet is L-shaped and comprises a first elastic arm and a second elastic arm which are connected, wherein the first elastic arm is connected with the base, and the second elastic arm is connected with the second suspension.
The suspension elastic sheet is of a bending structure, so that the suspension elastic sheet has an assembling position in the extending direction of the first elastic arm and the second elastic arm, the elastic arm subjected to the acting force swings along the stress direction by taking the bending structure as a reference under the condition that one elastic arm is subjected to the acting force and the other elastic arm is relatively static, the elastic arm is elastically deformed at the moment, the reset trend is realized, and the stressed elastic arm has the displacement compensation reset capability, in other words, the suspension elastic sheet has the supporting function and the anti-shake function.
Preferably, the first elastic arm and the second elastic arm are indirectly connected through a connecting arm, and the length direction of the connecting arm is inclined to the first elastic arm and also inclined to the second elastic arm.
The connecting arm enables the elastic arm I and the elastic arm II to have more excellent deformation capability, a preset relative state can be kept after the suspension elastic sheet is formed, and after the suspension elastic sheet is deformed under stress, the reliable anti-shake capability is achieved, if the elastic arm I and the elastic arm II are directly connected, the suspension elastic sheet state is unstable after bending, rebound possibly exists at the connecting position of the elastic arm I and the elastic arm II, that is, the elastic arm I and the elastic arm II have a tendency of returning to be located on the same plane, at this time, if the suspension elastic sheet is assembled between the base and the second suspension, the interaction force between the elastic arm I and the elastic arm II continuously acts on the base and the second suspension due to the unfolding tendency of the elastic arm I, the anti-shake resetting acting force is opposite to the acting force, and the force for enabling the suspension elastic sheet to achieve the anti-shake resetting is further caused by the force for driving the second suspension elastic sheet after the anti-shake action, therefore if the elastic arm I and the elastic arm II are directly connected, the elastic arm I and the elastic arm II need to be reset, the elastic arm I and the elastic arm II can not be driven by the corresponding elastic arm to be reset state, and the elastic arm II can not be driven by the opposite to the elastic force after the elastic arm I and the elastic arm II can not be reset through the relative state.
Preferably, the joint of the connecting arm and the first elastic arm comprises two sections of bending parts, and the joint of the connecting arm and the second elastic arm comprises two sections of bending parts.
The bending structure between the elastic arm and the connecting arm is arc-shaped, the bending structure between the elastic arm and the connecting arm is not high in strength, the formed arc is uneven in size, the structure strength and the elastic characteristic curve between a plurality of suspension elastic sheets are inconsistent, accordingly focusing and anti-shake are required to be independently adjusted, for any elastic arm, two sections of bending parts are very short and are more linear than the prior art, the elastic part and the connecting arm are high in structure strength, and accordingly focusing and anti-shake of a camera are required to be independently adjusted due to the fact that the structure strength and the elastic characteristic curve between the suspension elastic sheets are inconsistent.
Preferably, the first elastic arm and the second elastic arm are in a sheet shape with the surface direction along the first direction, and the suspension elastic sheet is supported between the base and the second suspension in the first direction.
The elastic piece I and the elastic piece II of the sheet structure can realize higher-efficiency deformation reset along the first plane so as to improve the anti-shake response speed, and meanwhile, the second suspension is supported by the suspension elastic piece, so that a movement gap is formed between the second suspension and the base, and the suspension elastic piece can achieve the displacement anti-shake reset effect more effectively.
Preferably, the suspension elastic sheets are uniformly distributed in the circumferential direction of the optical device.
The plurality of suspension spring plates can equally divide the supporting stress and the deformation stress, so that the stress of the single suspension spring plate is reduced, and the supporting capability and the displacement anti-shake resetting capability are more stably achieved.
Preferably, the base is provided with a first plug-in part for plugging the suspension elastic sheet, and the second suspension is provided with a second plug-in part for plugging the suspension elastic sheet.
The suspension shell fragment passes through the mode connection base and the second suspension of pegging graft, and this mode simple structure just can directly realize the equipment location of suspension shell fragment through grafting portion one and grafting portion two for assembly process is simple, convenient.
Preferably, the socket of the first plugging part and the socket of the second plugging part are arranged opposite to each other in the first direction.
The first opening direction of the plug-in part on the base is upward, and the second opening direction of the plug-in part on the second suspension is downward, so that the suspension elastic sheet is supported between the base and the second suspension in the optical axis direction, and the second suspension is in a suspension state relative to the base.
Preferably, the method further comprises:
the PCB is connected with the first suspension and is positioned between the first suspension and the base;
the first suspension is provided with a through hole area, the PCB board covers the through hole area, and the optical device is arranged at the position of the PCB board corresponding to the through hole area.
Preferably, the first suspension, the second suspension and the suspension wire are in a first plane in a natural state, and the suspension wire is in a structure of bending and/or bending along the first plane.
The structure is simple and easy to realize, the stability of the deformation acting force of the first suspension wire can be ensured, and the reset error is avoided before and after deformation.
In the prior art, the first suspension is generally a plate structure, the PCB board is mounted on the upper surface of the first suspension, and then the optical device is mounted on the PCB board, so that the technical effects of the above technical scheme can be achieved, however, compared with the technical scheme of the present invention, the size of the motor can be relatively large, and in the technical scheme of the present invention, since the first suspension has the through hole area, a part or all of the optical device can be located between the upper surface and the lower surface of the first suspension, particularly, when the optical device is an image sensor, the through hole area can completely accommodate the optical device, so that the size of the motor can be significantly reduced in the first direction.
Compared with the prior art, the invention can realize anti-shake and focusing in a smaller size range; the suspension spring plate not only can realize basic supporting function and provide realizing conditions for the movement of the second suspension in the first plane, but also can provide resetting elastic force after the second driving assembly drives the whole formed by the first suspension and the second suspension to move relatively to the base, thereby meeting the requirements of anti-shake displacement compensation resetting; the first suspension and the second suspension are connected through a suspension wire, so that the first suspension can move relative to the second suspension in a first direction under the drive of the first drive assembly to realize focusing, and the focusing reset is realized through the suspension wire.
Drawings
FIG. 1 is an exploded view of an embodiment of the present invention;
FIG. 2 is a schematic view of a hidden cover according to the present invention;
FIG. 3 is a cross-sectional view of an embodiment of the present invention;
FIG. 4 is a schematic view of a base according to an embodiment of the present invention;
FIG. 5 is a schematic view of an AF frame in an embodiment of the present invention;
FIG. 6 is a schematic view of a suspension dome according to an embodiment of the present invention;
fig. 7 is an enlarged view at a of fig. 1.
In the figure: 1-a first suspension; 2-a second suspension; 3-a base; 4-suspending wires; 5-optics; 6-suspending spring plates; 7-AF stent; 8-AF coils; 9-placing a table top; 10-a magnet holder; 11-a magnet piece; a 12-OIS scaffold; 13-OIS coil; 14-a PCB board; 15-first elastic arm; 16-second elastic arm; 17-an engagement arm; 18-first plug-in part; 19-a second plug-in part; 20-a first groove; 21-a second groove; 22-conductive flexible board; 23-an elastic layer; 24-an insulating layer; 25-a conductive layer; 26-cover plate.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the following specific embodiments.
As shown in fig. 1 to 3, an anti-shake focusing motor includes a first suspension 1, a second suspension 2, a first driving assembly, a base 3, and a second driving assembly; the first suspension 1 and the second suspension 2 are connected through a suspension wire 4, and the first suspension 1 is used for bearing an optical device 5; the first driving assembly is arranged between the first suspension 1 and the second suspension 2 and is used for driving the first suspension 1 to move along a first direction relative to the second suspension 2, wherein the first direction is parallel to the optical axis; a suspension spring plate 6 is arranged between the base 3 and the second suspension 2; the second drive assembly is arranged between the base 3 and the second suspension 2 for driving the second suspension 2 relative to the base 3 along a first plane, which is perpendicular to the optical axis.
Since the first driving assembly is used to drive the first suspension 1 to move in the first direction relative to the second suspension 2, the first driving assembly in this embodiment includes an AF coil 8 and a magnet piece 11, the AF coil 8 is disposed on the first suspension 1, and the magnet piece 11 is disposed on the second suspension 2. When the AF coil 8 is electrified, a magnetic force is generated with the magnet piece 11, so that the first suspension 1 is driven, and the magnet piece 11 is arranged along the circumferential direction of the AF coil 8 to meet the requirement of driving stability. Further, as shown in fig. 5, the first suspension 1 is connected with an AF support 7, a placement table 9 is provided on the AF support 7, and the AF coil 8 is wound around the AF support 7 with the placement table 9 as a positioning surface, in other words, when the AF coil 8 is provided on the AF support 7, the AF coil 8 can be positioned by the placement table 9, so that the assembly positioning is optimized, and the efficiency of the assembly process is improved. The second suspension 2 is provided with a magnet support 10, and the magnet support 10 is provided with magnet grooves for positioning, accommodating and assembling the magnet piece 11, and in this embodiment, the number of the magnet grooves is four, so that it is known that the four magnet grooves are uniformly arranged on the magnet support 10. Still further, the suspension spring 6 is connected between the base 3 and the magnet support 10.
Since the second driving assembly is used for driving the second suspension 2 to move in the first direction relative to the base 3, the second driving assembly in this embodiment includes an OIS coil 13 and a magnet piece 11, where the OIS coil 13 is disposed on the base 3, and the magnet piece 11 is disposed on the second suspension 2, it should be noted that, in order to save assembly space, reduce weight of the motor, and simplify the design, in this embodiment, the magnet piece 11 of the second driving assembly and the magnet piece 11 of the second driving assembly are the same component. Thus, when the OIS coil 13 is energized, a magnetic force is generated with the magnet piece 11, and the second suspension 2 is driven, and in this embodiment, the OIS coil 13 is an independent coil and is provided corresponding to the magnet piece 11. It is known that the driving part, whether the OIS coil 13 or the AF coil 8, may be formed by winding or arranging individual coils in the circumferential direction of the optical device 5. In this embodiment, the OIS support 12 is further included, where the OIS support 12 is connected to the base 3, and an OIS coil 13 is mounted on the OIS support 12.
Thus, since the optical device 5 is provided on the first suspension 1, the above-described movement process well realizes anti-shake and focusing. The optical device 5 may be a lens or an image sensor. Because the gravity of the image sensor is far smaller than that of the lens, the optical device 5 in the embodiment is preferably an image sensor, so that the AF coil 8 and/or the OIS coil 13 are easier to drive after being electrified, and thus the anti-shake and focusing are better realized, and the anti-shake and focusing of the camera can be realized by moving the image sensor, the response of higher frequency can be realized, and the anti-shake and focusing speed is improved. In addition, in the present embodiment, the first suspension 1, the second suspension 2 and the suspension wire 4 are in a first plane in a natural state, and the suspension wire 4 has a structure that is bent and/or curved along the first plane. Since the optical device 5 is preferably a lens, under the condition that the supporting capability of the suspension wire 4 is limited, the suspension wire 4 can effectively support the first suspension 1 and the image sensor, and under the natural state, the requirements that the first suspension 1, the second suspension 2 and the suspension wire 4 are in the first plane under the natural state can be met, therefore, in the process of relatively moving the first suspension 1 along the second suspension 2, the suspension wire 4 can meet the requirements of focusing and resetting besides the supporting functions of the first suspension 1 and the optical device 5.
In this embodiment, the device further comprises a PCB board 14, wherein the PCB board 14 is connected with the first suspension 1 and is located between the first suspension 1 and the base 3; the first suspension 1 is provided with a through hole area, the PCB 14 covers the through hole area, and the optical device 5 is installed on the position of the PCB 14 corresponding to the through hole area. Hereby, it can be confirmed without doubt that the PCB board 14 should be prevented from contacting the suspension wire 4, and therefore one of the first suspension 1 and the PCB board 14 should be provided with a stepped surface so that there is a gap between the PCB board 14 and the suspension wire 4.
In this embodiment, the suspension springs 6 are uniformly distributed in the circumferential direction of the optical device 5. Specifically, in order to achieve the above-mentioned driving purpose, the present embodiment connects the base 3 and the second suspension 2 through four suspension springs 6. The four suspension spring plates 6 are respectively positioned at the four top corners of the base 3, so that acting forces acting on the suspension spring plates 6 are uniformly dispersed, and the use requirements of the suspension spring plates 6 are efficiently met. Further, as shown in fig. 1, 2 and 6, the suspension spring 6 is L-shaped, and includes a first elastic arm 15 and a second elastic arm 16 connected to each other, where the first elastic arm 15 is connected to the base 3, and the second elastic arm 16 is connected to the second suspension 2. In order to achieve a suspension state, a gap exists between the magnet support 10 and the base 3, so that in the process that the magnet support 10 carries the second suspension 2 to move along the first plane, no motion interference exists between the magnet support 10 and the base 3, and the displacement anti-shake performance is effectively improved.
In this embodiment, the suspension spring 6 is an integrally formed part that is bent and processed. The first elastic arm 15 and the second elastic arm 16 are indirectly connected through a connecting arm 17, and the length direction of the connecting arm 17 is inclined to the first elastic arm 15 and also inclined to the second elastic arm 16. On the projection of the base 3, the included angle between the first elastic arm 15 and the connecting arm 17 is equal to the included angle between the second elastic arm 16 and the connecting arm 17, so that the deformation effects in different directions are more balanced. It should be further explained that if the engagement arm 17 is not disposed between the first elastic arm 15 and the second elastic arm 16, the formed suspension spring 6 may rebound, and then the angle between the projections of the first elastic arm 15 and the second elastic arm 16 on the base 3 in the formed state of the first elastic arm 15 and the second elastic arm 16 will be greater than 90 degrees, which makes the magnetic force between the OIS coil 13 and the magnet piece 11 not fully act on the first elastic arm 15 and/or the second elastic arm 16 after the first elastic arm 15 and the second elastic arm 16 are respectively connected to the base 3 and the magnet support 10, that is, the efficiency of anti-shake displacement compensation reset is low, so that the engagement arm 17 is required to engage the first elastic arm 15 and the second elastic arm 16. Further, the first elastic arm 15 and the second elastic arm 16 are in a shape of a sheet with a surface direction along the first direction, and the suspension spring 6 is supported between the base 3 and the second suspension 2 in the first direction. It should be noted that, the suspension spring 6 is L-shaped in a first plane, the first elastic arm 15 and the second elastic arm 16 extend along the first plane along the length direction thereof, and the plane of the engagement arm 17 is parallel to the first plane. In this way, compared to the first 15 and second 16 spring arms, which are bent directly, a suspension support in the first direction can be achieved by the engagement arm 17, so that the second suspension 2 meets the movement requirements above the base 3.
In this embodiment, the connection portion between the connecting arm 17 and the first elastic arm 15 includes two bending portions, and the connection portion between the connecting arm 17 and the second elastic arm 16 includes two bending portions. In general, when bending the sheet, the connection arm 17 and the elastic arm are in arc transition, which makes the structural strength and the elastic characteristic curve between the plurality of suspension elastic pieces 6 inconsistent, so, in order to ensure that the structural strength and the elastic characteristic curve between the plurality of suspension elastic pieces 6 are consistent, the focusing and the anti-shake of the camera are prevented from being independently debugged, and the transition is realized by using the linear two-section bending part, so that the problem can be well avoided.
As shown in fig. 1 to 4, in the present embodiment, the base 3 has a first plugging portion 18 into which the suspension spring 6 is plugged, and the second suspension 2 has a second plugging portion 19 into which the suspension spring 6 is plugged. Specifically, the first plugging portion 18 is configured as a protruding portion on the base 3, and the protruding portion is provided with a slot for plugging the suspension spring 6, which is known that if a slot is formed on the surface of the base 3, the base 3 is required to have a considerable thickness, otherwise the plugging stability of the suspension spring 6 cannot be satisfied, if the slot is cut through to form a through hole, then, in order to increase the service performance of the suspension spring 6, the size of the suspension spring 6 is extended in the first direction to match the through hole to achieve the requirement of connection stability, which results in the increase of the motor size, so that if the protruding portion is formed on the base 3, the slot is formed on the protruding portion, the problem can be well avoided, that is, the miniaturization of the motor is realized on the basis of satisfying the service performance of the suspension spring 6. The second suspension 2 is provided with a magnet support 10, so that the second plug-in connection part 19 is arranged on the magnet support 10. Therefore, the suspension spring 6 connects the base 3 and the magnet support 10 in a plug-in manner, so as to support the magnet support 10, the AF support 7, the first suspension 1, the second suspension 2 and the like. Since the OIS support 12 is disposed on the base 3, the OIS support 12 and the protruding portion can be guided and matched on the basis of the protruding portion formed on the base 3, in the prior art, if the OIS support 12 is disposed on the base 3 to mount the OIS coil 13, the connection between the OIS support 12 and the base 3 needs to be pre-positioned, and after positioning, there may be an assembly error, so that the shooting effect may be affected. It will be appreciated that the OIS bracket 12 has a recess for engaging the protrusion, so that during mounting of the OIS bracket 12 to the base 3, the recess can be aligned directly with the protrusion for locating mounting for quick assembly. In addition, since the movement of the second suspension 2 is realized by carrying the magnet support 10, the magnet support 10 can also realize movement limitation based on the protruding part, and the deformation stroke of the suspension spring 6 is prevented from being too large.
In this embodiment, the socket of the first plugging portion 18 and the socket of the second plugging portion 19 are disposed opposite to each other in the first direction. That is, the opening of the first plugging portion 18 faces the magnet holder 10, the opening of the second plugging portion 19 faces the base 3, so that the base 3 can support the suspension spring 6, the suspension spring 6 supports the magnet holder 10, and the second suspension 2 can support the magnet holder 10, so that a movement gap exists between the magnet holder 10 and the base 3, and it can be understood that the movement gap exists between the base 3 and the second suspension 2 when the magnet holder 10 is used as one part of the second suspension 2. Therefore, it can be known that the installation mode of the suspension spring 6 is very convenient, when the suspension spring is connected with the second suspension frame 2, the second elastic arm 16 is aligned with the socket of the second plug-in part 19 in the first direction for plug-in connection, then the second suspension frame 2 is arranged above the base 3, the first elastic arm 15 is aligned with the socket of the first plug-in part 18 in the first direction for assembly, the connection between the base 3 and the second suspension frame 2 can be completed, and the second suspension frame 2 is ensured to be in a suspension state without other posture adjustment. Therefore, compared with the prior art that a plurality of independent cylindrical springs arranged along the first direction are adopted to realize focusing, the assembly process can be greatly simplified, the size of the camera can be effectively reduced, and the assembly precision can be ensured, so that the focusing precision can be better met, and the camera can obtain high-quality pictures more stably.
In this embodiment, the base 3 is provided with a first groove 20 for embedding the OIS bracket 12, the protruding portion is formed in the first groove 20, and the top surface of the protruding portion is located above the top surface of the base 3. The base 3 is provided with a second recess 21 covering the first suspension 1 for limiting the movement of the optical element 5 in the first direction, it being known that there is a reduction and an enlargement of the focusing process, i.e. the movement direction of the optical element 5 may move in the positive direction of the first direction and possibly also in the negative direction of the first direction, so that the second recess 21 provided is able to provide a movement condition for the reduction and excessive movement of the suspension wire 4 results in the inability to form a focus or to cause failure of the suspension wire 4. In particular, the second recess 21 may cover the AF support 7, it being understood that when the AF support 7 is part of the first suspension 1, i.e. the second recess 21 may cover the first suspension 1. The first groove 20 and the second groove 21 form a two-layer stepped structure of the base 3, for example, when the base 3 is square, the side length of the first groove 20 is smaller than the side length of the base 3 and larger than the side length of the second groove 21. At this time, the OIS bracket 12 may be directly mounted on the transition surface between the first groove 20 and the second groove 21, so as to further reduce the size of the motor, and since the protruding portion is formed in the first groove 20, the protruding portion is prevented from occupying a larger size in the first direction, so that the overall size of the motor is reduced, and meanwhile, because of the avoidance relationship, the protruding portion is prevented from being disposed on the outer side of the base 3, so that the area of the motor in the first plane is also well reduced. In the present embodiment, the magnet holder 10 also has a through-opening area so that all or a part of the AF holder 7 can move between the bottom of the second groove 21 and the second suspension 2, and therefore, when the AF holder 7 contacts the bottom of the second groove 21, it means that the lower maximum stroke of the optical device 5 is located there to achieve the movement limitation of the optical device 5. And after the motor is assembled, the motor has a cover plate 26, so that the upper maximum stroke of the optics 5 is achieved by the cover plate 26.
In the present embodiment, the suspension wires 4 constitute wire members to electrically conduct the first suspension 1 and the second suspension 2. The suspension wire 4 itself may be electrically conductive, or may be a wire arranged along the extension direction of the suspension wire 4. In this embodiment, the suspension wires 4 comprise several elastic wires arranged side by side, the elastic wires comprising an elastic layer 23, an insulating layer 24 and a conductive layer 25, the insulating layer 24 being located between the elastic layer 23 and the conductive layer 25. As shown in fig. 7, in the present embodiment, the elastic layer 23 is BF (copper nickel tin alloy sheet), the insulating layer 24 is PI (polyimide), and the conductive layer 25 is rolled copper. In a specific use process, the elastic layer 23 is used as an elastic structure of the suspension wire 4, so that necessary supporting and focusing functions can be realized, and the suspension wire can be used for supplying power and transmitting signals if necessary; the conductive layer 25 is mainly used for supplying power and transmitting signals; the insulating layer 24 is used to insulate between the elastic layer 23 and the conductive layer 25. The elastic layer 23 can also be used for power supply and signal transmission, if necessary. It is thus known that, in different embodiments, the suspension wires 4 may have a single-layer structure or a multi-layer structure, and accordingly, the first suspension 1 and the second suspension 2 may be disposed in the same manner, and it should be noted that, when the first suspension 1 and the second suspension 2 have a multi-layer structure, insulation is required between the layers.
Further, the second suspension 2 is provided with a conductive flexible board 22 with an external circuit, electricity and/or signals can be transmitted to the first suspension 1 through the suspension wire 4, and the first suspension 1 is provided with a wiring part, and the wiring part is used for connecting with the PCB 14, so that the electricity and/or signals can be transmitted to the PCB 14, and the image sensor can obtain the electricity and/or signals, and meanwhile, the AF coil 8 and the OIS coil 13 can also obtain the electricity and/or signals from the PCB 14.
Whereby upon mounting the motor, the OIS bracket 12 provided with OIS coil 13 is first mounted to the base 3 by guiding; the PCB board 14 is adhered to the first suspension 1, then the optical device 5 is disposed on the PCB board 14, the AF support 7 around which the AF coil 8 is wound is connected to the PCB board 14, and then the magnet support 10 on which the magnet piece 11 is loaded is connected to the second suspension 2; then the first plug-in part 18 of the base 3 and the second plug-in part 19 of the magnet support 10 are connected by the suspension spring 6, and finally the cover plate 26 is buckled on the base 3. It should be noted that in the above process, the power connection requirement needs to be satisfied.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that the above-mentioned preferred embodiment should not be construed as limiting the invention, and the scope of the invention should be defined by the appended claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.

Claims (10)

1. An anti-shake focusing motor, comprising:
the first suspension and the second suspension are connected through suspension wires, and the first suspension is used for bearing an optical device;
a first drive assembly disposed between the first and second suspensions for driving the first suspension to move relative to the second suspension in a first direction, the first direction being parallel to the optical axis;
a suspension spring plate is arranged between the base and the second suspension; and
and the second driving assembly is arranged between the base and the second suspension and is used for driving the second suspension to move along a first plane relative to the base, and the first plane is perpendicular to the optical axis.
2. An anti-shake focusing motor according to claim 1 wherein the suspension spring is L-shaped and comprises a first elastic arm and a second elastic arm connected to each other, the first elastic arm being connected to the base, the second elastic arm being connected to the second suspension.
3. An anti-shake focusing motor according to claim 2 wherein the first and second elastic arms are indirectly connected by an engagement arm, and the length direction of the engagement arm is inclined to the first elastic arm and also inclined to the second elastic arm.
4. An anti-shake focusing motor according to claim 3 wherein the joint of the engagement arm and the first elastic arm comprises two bending parts, and the joint of the engagement arm and the second elastic arm comprises two bending parts.
5. An anti-shake focusing motor according to claim 2, wherein the first and second elastic arms are in the form of a sheet with a surface direction along the first direction, and the suspension spring is supported between the base and the second suspension in the first direction.
6. An anti-shake focusing motor according to claim 1 wherein the suspension springs are uniformly distributed in the circumferential direction of the optical device.
7. The anti-shake focusing motor of claim 1, wherein the base has a first plug portion for plugging the suspension spring, and the second suspension has a second plug portion for plugging the suspension spring.
8. The anti-shake focusing motor of claim 7, wherein the socket of the first plug-in portion and the socket of the second plug-in portion are disposed opposite to each other in the first direction.
9. An anti-shake focusing motor according to claim 1, further comprising:
the PCB is connected with the first suspension and is positioned between the first suspension and the base;
the first suspension is provided with a through hole area, the PCB board covers the through hole area, and the optical device is arranged at the position of the PCB board corresponding to the through hole area.
10. An anti-shake focusing motor according to claim 1, wherein the first suspension, the second suspension and the suspension wire are in a first plane in a natural state, and the suspension wire has a structure of bending and/or curving along the first plane.
CN202311724786.7A 2023-12-14 2023-12-14 Anti-shake focusing motor Pending CN117590550A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311724786.7A CN117590550A (en) 2023-12-14 2023-12-14 Anti-shake focusing motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311724786.7A CN117590550A (en) 2023-12-14 2023-12-14 Anti-shake focusing motor

Publications (1)

Publication Number Publication Date
CN117590550A true CN117590550A (en) 2024-02-23

Family

ID=89920106

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311724786.7A Pending CN117590550A (en) 2023-12-14 2023-12-14 Anti-shake focusing motor

Country Status (1)

Country Link
CN (1) CN117590550A (en)

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