CN215186393U - Miniature optical anti-shake motor - Google Patents

Abstract

The present disclosure relates to a micro optical anti-shake motor, the motor including a fixed portion, a moving portion movably mounted to the fixed portion, and at least one first electromagnetic generating device capable of generating a driving force in a first direction perpendicular to an optical axis of an optical device, the first electromagnetic generating device including a first coil disposed on one of the fixed portion and the moving portion, and a first magnet capable of generating an electromagnetic induction with the first coil disposed on the other of the fixed portion and the moving portion, the first electromagnetic generating device being configured such that the generated driving force can drive the moving portion to rotate in a plane perpendicular to the optical axis, on the one hand, an anti-shake effect can be improved by rotation, and on the other hand, the moving portion can be resisted from generating an unnecessary rotation.

Description

Miniature optical anti-shake motor

Technical Field

The present disclosure relates to the field of optical technology, and in particular, to a micro optical anti-shake motor.

Background

The optical system is a system for imaging or optical information processing, and can be applied to various fields, for example, a micro camera module widely applied to products such as mobile phones, automobiles, unmanned planes, security monitoring, smart homes and the like. With the development of science and technology, the photographing and video recording effects of the miniature camera module are clearer and clearer. For example, an optical anti-shake motor is introduced into a miniature camera module, so that the problem of unclear imaging caused by shaking in the shooting process can be solved. In the related art, the optical anti-shake motor can translate the optical device in a certain direction, but in some cases, the optical anti-shake motor still cannot achieve a good effect of compensating for shake.

SUMMERY OF THE UTILITY MODEL

The purpose of this disclosure is to provide a miniature optical anti-shake motor to play better anti-shake effect.

In order to achieve the above object, the present disclosure provides a micro optical anti-shake motor including a fixed part, a moving part movably mounted to the fixed part, and at least one first electromagnetic generating device capable of generating a driving force in a first direction perpendicular to an optical axis of an optical device,

the first electromagnetic generating device includes a first coil provided on one of the fixed portion and the moving portion, and a first magnet capable of generating electromagnetic induction with the first coil provided on the other of the fixed portion and the moving portion,

the first electromagnetic generating device is configured to generate a driving force capable of driving the moving part to rotate in a plane perpendicular to the optical axis.

Optionally, the micro optical anti-shake motor further includes a plurality of balls disposed between the fixed portion and the moving portion and capable of supporting the moving portion.

Optionally, the micro optical anti-shake motor further comprises a spring plate connected between the fixed part and the moving part, the spring plate comprises a first elastic plate connected with the fixed part, a second elastic plate connected with the moving part, and a spring wire connected between the first elastic plate and the second elastic plate.

Optionally, the micro optical anti-shake motor further includes a first sliding shaft disposed on the fixed portion and a second sliding shaft disposed on the moving portion and in contact with the first sliding shaft, and the first sliding shaft and the second sliding shaft are disposed in a crossed manner and are respectively perpendicular to the optical axis direction.

Optionally, the micro optical anti-shake motor further includes a flexible circuit board disposed on the fixing portion, an elastic arm is formed at an edge of the flexible circuit board, and the elastic arm is connected to the moving portion.

Optionally, the micro optical anti-shake motor further comprises a suspension wire connected between the fixed part and the moving part.

Optionally, the first electromagnetic generating device is further configured to generate a driving force capable of driving the moving portion to translate along the first direction.

Optionally, the number of the first electromagnetic generating devices is two, and the two first electromagnetic generating devices are disposed on two sides of a central axis of the moving portion extending in the first direction.

Optionally, two of the first electromagnetic generating devices are configured to:

when the two driving forces generated by the two first electromagnetic generation devices are the same in magnitude and direction, the moving part can translate along the first direction;

when the two driving forces generated by the two first electromagnetic generating devices are the same in magnitude and opposite in direction, the moving part can rotate in a plane perpendicular to the optical axis; and

when the two driving forces generated by the two first electromagnetic generating devices are different in magnitude, the moving part can translate along the first direction and can rotate in a plane perpendicular to the optical axis.

Optionally, the micro optical anti-shake motor further comprises at least one second electromagnetic generating device capable of generating a driving force in a second direction perpendicular to the optical axis, the second electromagnetic generating device comprising a second coil provided on one of the fixed portion and the moving portion and a second magnet provided on the other of the fixed portion and the moving portion, the second direction being perpendicular to the first direction.

Optionally, the micro optical anti-shake motor includes two second electromagnetic generators, and the two second electromagnetic generators are disposed at opposite sides of the moving portion and opposite to the moving portion.

Alternatively, the second electromagnetic generating device is configured to generate a driving force capable of driving the moving part to rotate in a plane perpendicular to the optical axis.

Optionally, the micro optical anti-shake motor further comprises a first position sensor for detecting a position of the moving part translated in the first direction and a second position sensor for detecting a rotational position of the moving part.

Optionally, a magnetic member is disposed on a side of the first coil facing away from the first magnet, and the magnetic member is configured to generate a magnetic attraction force between the magnetic member and the first magnet to enable the moving portion to generate a tendency of returning to the initial position when a deviation is generated between the fixed portion and the moving portion relative to the initial position.

Through the technical scheme, the micro optical anti-shake motor in the embodiment of the disclosure can provide a rotation moment for the moving part to enable the moving part to have a rotation trend through the driving force generated by the first electromagnetic generating device, and on one hand, the rotation moment can drive the moving part to rotate in a plane perpendicular to an optical axis so as to realize a shake compensation effect and improve imaging definition; on the other hand, when the motor is subjected to anti-shake by other means, such as translation, the rotation moment can resist unnecessary rotation of the moving part during translation.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is an expanded schematic view of a micro optical anti-shake motor provided in an exemplary embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a micro optical anti-shake motor provided in an exemplary embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a micro optical anti-shake motor provided in another exemplary embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a micro optical anti-shake motor provided in yet another exemplary embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a micro optical anti-shake motor provided in yet another exemplary embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a micro optical anti-shake motor provided in yet another exemplary embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a micro optical anti-shake motor provided in yet another exemplary embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a micro optical anti-shake motor provided in yet another exemplary embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a micro optical anti-shake motor provided in yet another exemplary embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of a micro optical anti-shake motor provided in yet another exemplary embodiment of the present disclosure;

fig. 11 is a perspective view of a micro optical anti-shake motor provided in an exemplary embodiment of the present disclosure;

FIG. 12 is a schematic view of a motor provided in an exemplary embodiment of the present disclosure with portions of the structure omitted;

FIG. 13 is a schematic view of a motor provided in an exemplary embodiment of the present disclosure with portions of the structure omitted;

FIG. 14 is a schematic view of a motor provided in an exemplary embodiment of the present disclosure with portions of the structure omitted;

FIG. 15 is a schematic view of a motor provided in an exemplary embodiment of the present disclosure with portions of the structure omitted;

FIG. 16 is a schematic view of a motor provided in an exemplary embodiment of the present disclosure with portions of the structure omitted;

FIG. 17 is a schematic view of a motor provided in an exemplary embodiment of the present disclosure with portions of the structure omitted;

fig. 18 is a schematic view of a motor provided in an exemplary embodiment of the present disclosure with a partial structure omitted.

Description of the reference numerals

10-fixed part, 11-base, 12-shell, 20-moving part, 311-first coil, 312-second coil, 321-first magnet, 322-second magnet, 40-ball, 41-reed, 411-first elastic sheet, 412-second elastic sheet, 413-spring wire, 421-first sliding shaft, 422-second sliding shaft, 43-flexible circuit board, 431-elastic arm, 432-connecting sheet, 44-suspension wire, 50-power-on line, 60-position sensor and 70-magnetic part.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, the use of directional words such as "upper, lower, left and right" is defined according to the directions of the drawings of fig. 2 to 10, and "inner" and "outer" are directed to the self-contours of the respective parts. Terms such as "first," "second," and the like, used in this disclosure are intended to distinguish one element from another, without order or importance. Further, in the following description, when referring to the figures, the same reference numbers in different figures denote the same or similar elements.

As shown in fig. 1 to 11, the present disclosure provides a micro optical anti-shake motor including a fixed portion 10, a moving portion 20 movably mounted to the fixed portion 10, and at least one first electromagnetic generating device capable of generating a driving force in a first direction perpendicular to an optical axis of an optical device, the first direction being a translational direction within a plane perpendicular to the optical axis direction, where the first direction is defined as a left-right direction of a drawing direction of fig. 2 to 10. It should be noted that the optical device is mounted on the moving portion 20, and the moving portion 20 drives the optical device to move along the first direction under the action of electromagnetic induction, so as to achieve the anti-shake effect. The optical device may include a lens body portion for transmitting light, for example, may include a lens, a lens barrel mounting the lens, and a barrel base mounting the lens barrel, and a sensor portion for receiving light, for example, may include a filter and a sensor chip that are glued together, at least one of the lens body portion and the sensor portion being mounted on the moving part 20. Here, referring to fig. 1, the fixing portion 10 may include a base 11 and a housing 12 covering an outer periphery of the base 11, and the moving portion 20 is mounted to the base 11 and can be covered by the housing 12, so that the motor can be integrally mounted to the electronic product. Each of the first electromagnetic generating devices includes a first coil 311 provided on one of the fixed portion 10 and the moving portion 20, and a first magnet 321 provided on the other of the fixed portion 10 and the moving portion 20 capable of generating electromagnetic induction with the first coil 311. Here, the case where the coil is provided on the fixed portion 10 and the magnet is provided on the moving portion 20 will be described as an example. Wherein the first electromagnetic generating device may be configured such that the generated driving force can drive the moving portion 20 to rotate in a plane perpendicular to the optical axis.

Through the technical scheme, the micro optical anti-shake motor in the embodiment of the disclosure can provide a rotation moment which enables the moving part 20 to have a rotation trend for the moving part 20 through the driving force generated by the first electromagnetic generating device, and on one hand, the rotation moment can drive the moving part 20 to rotate in a plane perpendicular to an optical axis, so that a shake compensation effect is realized, and the imaging definition is improved; on the other hand, this rotational moment can counteract an unwanted rotation of the movement part 20 during the translation when the motor is stabilized by other means, for example by means of a translation.

In the embodiment of the present disclosure, the first electromagnetic generating device may be further configured to generate a driving force capable of driving the moving portion 2 to translate along the first direction, that is, the first electromagnetic generating device may drive the moving portion 20 to translate along the first direction only, or the first electromagnetic generating device may drive the moving portion 20 to rotate only in a plane perpendicular to the optical axis, or the first electromagnetic generating device may drive the moving portion 20 to both translate along the first direction and rotate in a plane perpendicular to the optical axis. Therefore, the motor in the embodiment of the disclosure can compensate shaking in multiple directions, so that the imaging effect with high definition is achieved.

The number of the first electromagnetic generating devices is not limited, and when there is only one first electromagnetic generating device, the driving force generated by the first electromagnetic generating device is offset to the center of the moving portion 20 to drive the moving portion 20 to rotate, and the rotation center of the moving portion 20 is not on the extension line of the driving force. When the number of the first electromagnetic generating devices is more than one, the motion portion 20 is driven by the cooperation of the plurality of electromagnetic generating devices. For example, referring to fig. 1 to 11, the number of the first electromagnetic generating devices may be two, and two first electromagnetic generating devices are disposed on both sides of the center of the moving portion 20 extending in the first direction, that is, on both sides of the center of the moving portion 20 extending in the left-right direction in the plane of the drawing of fig. 2 to 10, that is, on both sides of the upper and lower sides of the plane of the drawing. Specifically, as shown in fig. 2, 4, 5 and 8, two first electromagnetic generating devices may be disposed on the same side of the micro optical anti-shake motor and symmetrically arranged about the center. Alternatively, as shown in fig. 3, 6, 9 and 10, the two first electromagnetic generators may be disposed on opposite sides of the micro optical anti-shake motor and staggered on the upper and lower sides of the drawing.

In the embodiment of the present disclosure, whichever arrangement is adopted, when the two driving forces generated by the two first electromagnetic generators are the same in magnitude and direction, that is, the magnitudes and directions of the forces received by the moving portion 20 on the two sides of the center are the same, so that the moving portion 20 can translate leftward or rightward along the first direction; when the two driving forces generated by the two first electromagnetic generators are the same in magnitude and opposite in direction, that is, the forces applied to the two sides of the center by the moving portion 20 are the same in magnitude and opposite in direction, so that the moving portion 20 can rotate in the direction perpendicular to the optical axis, for example, when the driving direction of the first electromagnetic generator located above in the drawing of fig. 2 is left and the driving direction of the first electromagnetic generator located below is right, the moving portion 20 can rotate counterclockwise, conversely, the moving portion 20 can rotate clockwise, for example, when the driving direction of the first electromagnetic generator located on the left side in the drawing of fig. 3 is left and the driving direction of the first electromagnetic generator located on the right side is right, the moving portion 20 can rotate clockwise, and conversely, the moving portion 20 can rotate counterclockwise; when the two driving forces generated by the two first electromagnetic generating devices are different in magnitude, no matter whether the two directions of the two driving forces are the same or not, because the two driving forces applied to the two sides of the center of the moving portion 20 are different, the moving portion 20 can translate along the first direction and can rotate in a plane perpendicular to the optical axis, as shown in fig. 2 and 3, when the two driving forces are all towards the left and the driving force on the upper side is greater than the driving force on the lower side, the moving portion 20 can translate towards the left and can also rotate anticlockwise, and when the driving force on the upper side is towards the right and the driving force on the lower side is greater than the driving force on the lower side, the moving portion 20 can translate towards the right and can also rotate clockwise. In the embodiments of the present disclosure, the magnitude and direction of the driving force may be controlled by controlling the magnitude and direction of the current through the coil.

In addition, the number of the first electromagnetic generating devices may be four, and as shown in fig. 7, four first electromagnetic generating devices are disposed at opposite sides of the motor, and two first electromagnetic generating devices may be disposed at each side, and two first electromagnetic generating devices at each side may be regarded as the electromagnetic generating devices at one side described above, so that the moving state of the moving portion 20 is controlled according to the magnitude and direction of the driving force of the electromagnetic generating devices at two first sides.

According to an embodiment of the present disclosure, as shown in fig. 1, 4 to 11, the micro optical anti-shake motor may further include at least one second electromagnetic generating device capable of generating a driving force in a second direction perpendicular to the optical axis, the second electromagnetic generating device including a second coil 312 disposed on one of the fixed portion 10 and the moving portion 20 and a second magnet 322 disposed on the other of the fixed portion 10 and the moving portion 20, the second direction being perpendicular to the first direction. The second direction may be defined as an up-down direction of the drawing of fig. 2 to 10, and may be perpendicular to the first direction, which is positioned as a left-right direction of the drawing. The miniature optical anti-shake motor in this disclosure can make motion part 20 translate along the first direction, can make motion part 20 translate along the second direction again, can also produce the rotation for it can realize the anti-shake in multi-direction, in order to improve the anti-shake effect.

Referring to fig. 4, the second electromagnetic generating device may be one in number, disposed adjacent to the first electromagnetic generating device, and driven at one side of the moving part 20. Referring to fig. 5 to 7, the micro optical anti-shake motor may also include two second electromagnetic generators, where the two second electromagnetic generators may be disposed opposite to and opposite to the moving portion 20, and the two second electromagnetic generators may only enable the moving portion 20 to translate along the second direction. In this case, on the one hand, the two second electromagnetic generators can make the stress on the opposite side of the moving portion 20 uniform, and on the other hand, when the driving directions of the two first electromagnetic generators are opposite to each other so that the moving portion 20 generates a rotation trend, the two second electromagnetic generators can keep the moving portion 20 at the middle position, that is, the moving portion 20 can be rotated without being shifted, so that the moving position of the moving portion 20 can be better controlled, in other words, the moving portion 20 can be precisely controlled to be translated or rotated during the motor compensation shaking process.

In another embodiment, the second electromagnetic generating device may be configured to generate a driving force capable of driving the moving part 20 to rotate in a plane perpendicular to the optical axis. That is, the second electromagnetic generating device is provided in the same principle as the first electromagnetic generating device, and can drive the moving portion 20 to translate and rotate, or can drive the moving portion 20 to translate and rotate. Thus, the rotation of the moving part 20 can be driven by the first electromagnetic generating device and the second electromagnetic generating device on different sides, so that the driving force can be increased and the driving effect can be ensured.

Specifically, the two second electromagnetic generating devices may be disposed in the same manner as the first electromagnetic generating device described above, and may be disposed on both sides of the central axis of the moving portion 20 extending in the second direction, that is, on both left and right sides of the moving portion 20 in fig. 8 to 10. As in fig. 8 to 9, the two second electromagnetic generators are disposed on the same side and symmetrically disposed. As another example in fig. 10, two second electromagnetic generating devices may be provided on opposite sides of the motor and arranged in a staggered manner on the left and right sides of the moving portion 20. Similarly, when the two driving forces generated by the two second electromagnetic generators are the same in magnitude and direction, the moving portion 20 can translate in the second direction; when the two driving forces generated by the two second electromagnetic generating devices are the same in magnitude and opposite in direction, the moving part 20 can rotate in a plane perpendicular to the optical axis; and when the two driving forces generated by the two second electromagnetic generating devices are different in magnitude, the moving portion 20 can translate in the second direction while rotating in a plane perpendicular to the optical axis. In the embodiment of fig. 10, the electromagnetic generating devices are provided on four sides of the moving portion 20, and the four electromagnetic generating devices may be identically configured, so that the moving portion 20 may be more smoothly and uniformly driven. In addition, the number of the second electromagnetic generating devices may also be four, and the arrangement may be the same as the arrangement of the four first electromagnetic generating devices described above, which is not repeated here.

In the embodiment of the present disclosure, there may be various ways of supporting the moving portion 20, and the supporting way may be satisfied that the moving portion 20 translates along the first direction or the second direction with respect to the fixed portion 10 as described above, and may also be satisfied that the moving portion 20 rotates with respect to the fixed portion 10, and the specific supporting way may be described with reference to the following description and the accompanying drawings.

According to an embodiment of the present disclosure, referring to fig. 1 to 11, the micro optical anti-shake motor may further include a plurality of balls 40 disposed between the fixed part 10 and the moving part 20 and capable of supporting the moving part 20. The balls 40 support may not restrict the moving direction of the moving part 20, i.e., may not restrict the moving part 20 from rotating. The multi-directional anti-shake of the micro optical anti-shake motor can be realized by combining the ball bearings with the rotatable moving part 20. Further, the friction coefficient of rolling friction is small during the movement of the moving portion 20, so that the resistance to the moving portion 20 can be reduced.

In another embodiment, referring to fig. 12 and 13, the motor may further include a spring 41 connected between the fixed part 10 and the moving part 20, the spring 41 including a first elastic piece 411 for connection with the fixed part, a second elastic piece 412 for connection with the moving part 20, and a spring wire 413 connected between the first elastic piece 411 and the second elastic piece 412. As shown in fig. 12, the second elastic piece 412 may be connected to a boss at four corners of the moving portion 20, the first elastic piece 411 may be a clip-shaped piece connected to the bottom of the fixed portion 10, and a spring 413 is disposed between the first elastic piece 411 and the second elastic piece 412 to provide deformation for the movement of the moving portion 20 and have a tendency of elastic return, and at the same time, the fixed portion 10 and the moving portion 20 may be prevented from rotating relative to each other when they are translated in a certain direction. Referring to fig. 13, the first elastic pieces 411 of the spring 41 may be two pieces disposed on a set of opposite sides, and the second elastic pieces 412 may be two pieces disposed on an adjacent set of opposite sides, and the two elastic pieces are connected by a surrounding spring wire 413, which is the same as the principle of the spring 41 described above and will not be described here.

In another embodiment, referring to fig. 14 and 15, the motor may further include a first slide shaft 421 disposed at the fixed portion 10 and a second slide shaft 422 disposed at the moving portion 20 and contacting the first slide shaft 421, and the first slide shaft 421 and the second slide shaft 422 are disposed to intersect and be perpendicular to the optical axis direction, respectively. When the moving part 20 moves relative to the fixed part 10, the two sliding shafts slide relative to each other, either in a certain direction or in a rotational direction. Through the mode of slide shaft support, compare in reed 41, can make the support more stable through rigid support, compare in ball support, can avoid the ball to press on fixed part 10 and motion part 20 and lead to producing the pit, lead to influencing motor performance.

In still another embodiment, referring to fig. 16 and 17, the motor may further include a flexible circuit board 43 disposed at the fixed part 10, and an elastic arm 431 is formed at an edge of the flexible circuit board 43, and the elastic arm 431 is connected to the moving part 20. The elastic arm 431 may include one strip as shown in fig. 16, and is connected to the moving part 20 through a connecting piece 432. Alternatively, as shown in fig. 17, two elastic arms 261 may be included, and connected to the moving portion 20 through two connecting pieces 432.

In other embodiments, referring to fig. 18, the motor may further include a suspension wire 44 connected between the fixed portion 10 and the moving portion 20, the suspension wire 44 may swing accordingly when the moving portion 20 moves, and the suspension wire 44 may be supported between the fixed portion 10 and the moving portion 20, and the suspension wire 44 may also prevent the moving portion 20 from rotating relative to each other when the moving portion 20 translates in a certain direction relative to the fixed portion 10.

In the disclosed embodiment, referring to fig. 1, the micro optical anti-shake motor may further include a position sensor 60, and in particular, may include a set of first position sensors for detecting a position of the moving part 20 translated in the first direction, and a set of second position sensors for detecting a rotational position of the moving part 20. In such an embodiment, the motor may further include a power line 50, and sensing devices corresponding to respective sensor positions to enable closed loop control by the sensors. Here, the power line 50 may be a circuit board structure such as the flexible circuit board 43 described above, or may be another circuit structure capable of supplying power to the coil, and the induction device may be a magnetic device, or more specifically, a hall magnet, for example. The energizing line 50, the position sensor 60, and the sensing device may constitute a closed-loop control system for controlling the movement of the moving part 20, the position sensor 60 may determine a position signal of the moving part 20 by detecting a position signal of the sensing device and feed back the signal to the energizing line 50, and the energizing line 50 may energize the coil to control the movement of the moving part 20. Wherein, the quantity of each group of sensors and each group of sensing devices can all be a plurality of to make the position detection of motion portion 20 more accurate. When the motor further includes the second electromagnetic generating device, a set of a third position sensor for detecting the position of the moving portion 20 in the second direction and a third sensing device corresponding to the position of the third position sensor may be additionally provided, and similarly, the number of the third position sensors and the number of the third sensing devices may also be respectively multiple, so as to improve the accuracy of position detection of the moving portion 20.

In the embodiment of the present disclosure, referring to fig. 11, a side of the first coil 311 facing away from the first magnet 321 may be provided with a magnetic member 70, and the magnetic member 70 may be configured such that, when a deviation occurs between the fixed portion 10 and the moving portion 20 relative to the initial position, a magnetic attraction force generated by the magnetic member 70 and the first magnet 321 can cause a tendency of returning to the initial position to occur in the moving portion 20. Here, the initial position refers to a position where the motor is located when the motor is not energized and gravity or other external force or the like is not considered. When the motor needs to perform shake compensation, the first coil 311 drives the first magnet 321 to generate relative motion between the fixed part 10 and the moving part 20, so as to cause relative displacement between the magnetic member 70 and the first magnet 321; after the anti-shake action is completed, the magnetic member 70 generates a magnetic attraction force to the first magnet 321 to make the moving portion 20 return to the initial position, wherein the magnetic attraction force can also play a guiding role for the moving portion 20, that is, the moving portion 20 does not rotate under the condition of generating linear displacement along a certain direction, thereby ensuring that the driving process is smoother. The motor that this disclosure provided can provide outage restoring force to can the energy saving, and avoid rocking the striking abnormal sound, and this kind of structural design's reset process is more stable, thereby can improve miniature optics anti-shake motor's reliability. Here, the magnetic members 70 may be respectively disposed at both sides symmetrical with respect to the second direction so that magnetic attractive forces generated by the magnetic members 70 and the first magnets 321 at the opposite sides of the motor can be counterbalanced to make the motor in a balanced state. When the magnetic member 70 is used in combination with the above-described ball or slide shaft, the ball or slide shaft can support the moving portion 20, and the magnetic attraction between the magnetic member 70 and the first magnet 321 can provide a magnetic return. When the supporting manner of the spring plate, the flexible circuit board or the suspension wire is adopted, the spring plate can elastically return through the elasticity of the spring plate, and the magnetic element 70 can also be additionally arranged to further provide magnetic attraction return force.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (14)

1. A miniature optical anti-shake motor comprising a stationary part (10), a moving part (20) movably mounted to said stationary part (10), and at least one first electromagnetic generating means capable of generating a driving force in a first direction perpendicular to an optical axis of an optical device,

the first electromagnetic generating device comprises a first coil (311) arranged on one of the fixed part (10) and the moving part (20), and a first magnet (321) which is arranged on the other of the fixed part (10) and the moving part (20) and can generate electromagnetic induction with the first coil (311),

the first electromagnetic generating device is configured to generate a driving force capable of driving the moving part (20) to rotate in a plane perpendicular to the optical axis.

2. The micro optical anti-shake motor according to claim 1, further comprising a plurality of balls (40) disposed between the fixed part (10) and the moving part (20) and capable of supporting the moving part (20).

3. The micro optical anti-shake motor according to claim 1, further comprising a spring plate (41) connected between the fixed part (10) and the moving part (20), the spring plate (41) comprising a first elastic plate (411) for connecting with the fixed part (10), a second elastic plate (412) for connecting with the moving part (20), and a spring wire (413) connected between the first elastic plate (411) and the second elastic plate (412).

4. The micro optical anti-shake motor according to claim 1, further comprising a first slide shaft (421) disposed on the fixed portion (10) and a second slide shaft (422) disposed on the moving portion (20) and contacting the first slide shaft (421), wherein the first slide shaft (421) and the second slide shaft (422) are disposed crosswise and perpendicular to the optical axis direction, respectively.

5. The micro optical anti-shake motor according to claim 1, further comprising a flexible circuit board (43) provided to the fixed part (10), an elastic arm (431) being formed at an edge of the flexible circuit board (43), the elastic arm (431) being connected to the moving part (20).

6. The micro optical anti-shake motor according to claim 1, further comprising a suspension wire (44) connected between the fixed part (10) and the moving part (20).

7. The miniature optical anti-shake motor according to any of claims 1-6, wherein the first electromagnetic generating device is further configured such that the generated driving force is capable of driving the moving part (20) to translate in the first direction.

8. The micro optical anti-shake motor according to claim 7, wherein the number of the first electromagnetic generating devices is two, and two first electromagnetic generating devices are disposed on both sides of a central axis of the moving part (20) extending in the first direction.

9. The micro optical anti-shake motor according to claim 8, wherein the two first electromagnetic generating devices are configured to:

the moving part (20) can translate along the first direction when the two driving forces generated by the two first electromagnetic generating devices are the same in magnitude and direction;

when the two driving forces generated by the two first electromagnetic generating devices are the same in magnitude and opposite in direction, the moving part (20) can rotate in a plane perpendicular to the optical axis; and

when the two driving forces generated by the two first electromagnetic generating devices are different in magnitude, the moving part (20) can translate along the first direction and can rotate in a plane perpendicular to the optical axis.

10. The micro optical anti-shake motor according to claim 7, further comprising a first position sensor for detecting a position of the moving part (20) that is translated in the first direction and a second position sensor for detecting a rotational position of the moving part (20).

11. The micro optical anti-shake motor according to any one of claims 1-6, further comprising at least one second electromagnetic generating device capable of generating a driving force in a second direction perpendicular to the optical axis, the second electromagnetic generating device comprising a second coil (312) provided on one of the fixed portion (10) and the moving portion (20) and a second magnet (322) provided on the other of the fixed portion (10) and the moving portion (20), the second direction being perpendicular to the first direction.

12. The micro optical anti-shake motor according to claim 11, comprising two second electromagnetic generating devices, which are disposed opposite to and opposite to the moving part (20).

13. The miniature optical anti-shake motor according to claim 11, wherein the second electromagnetic generating device is configured to generate a driving force capable of driving the moving part (20) to rotate in a plane perpendicular to the optical axis.

14. The micro optical anti-shake motor according to any one of claims 1-6, wherein a magnetic member (70) is disposed on a side of the first coil (311) facing away from the first magnet (321), and the magnetic member (70) is configured such that, when a deviation occurs between the fixed part (10) and the moving part (20) with respect to an initial position, a magnetic attraction force generated by the magnetic member (70) and the first magnet (321) can cause the moving part (20) to have a tendency to return to the initial position.

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