CN116626846A

CN116626846A - Motor driving device and camera module

Info

Publication number: CN116626846A
Application number: CN202210131727.8A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2023-08-22

Abstract

The application discloses a motor driving device and a camera module, wherein the motor driving device comprises: a base; an outer frame movably supported on the base in a direction orthogonal to the optical axis and having a first side wall and a second side wall parallel to each other; at least one supporting member disposed on an upper side of the base and movably supporting the outer frame; an inner frame disposed inside the outer frame and movable in an optical axis direction, the optical lens being adapted to be disposed inside the inner frame; a focusing driving mechanism for driving the inner frame to move along the optical axis direction; the optical anti-shake driving mechanism is used for driving the outer frame to move in the direction orthogonal to the optical axis; the side elastic pieces are connected with the base and the outer frame, and are respectively arranged on the first side wall and the second side wall, and are suitable for elastic deformation to adapt to the relative displacement of the outer frame and the base.

Description

Motor driving device and camera module

Technical Field

The present application relates to the field of camera modules, and more particularly, to a motor driving device and a camera module.

Background

In terminal devices such as mobile phones, the requirement of photographing is increasing, so that a camera module for the terminal is required to have better photographing performance. In addition, due to the volume limitation of the mobile terminal equipment, the camera module function is increased, the shooting performance of the camera module is improved, and meanwhile, the camera module is miniaturized as much as possible.

The mode of improving the shooting performance of the shooting module has various, and the current common functions are automatic focusing (focusing) and optical anti-shake (optical anti-shake), and the current actuating mechanism for realizing focusing and optical anti-shake is usually a voice coil motor, namely a magnet/coil structure, but a plurality of pairs of magnets and coils are arranged in the shooting module, so that the complexity of the internal structure of the shooting module can be increased, and the miniaturization of the shooting module is not facilitated. How to optimize focusing and optical anti-shake driving devices is a current research hot spot.

In addition, in order to improve the shooting performance of the shooting module, adding a variable aperture device to the shooting module is also a current research hotspot. The iris diaphragm device can adjust the light inlet amount of the optical lens according to the external environment, and can properly narrow the incident hole of the iris diaphragm at the place with sufficient light so as to avoid overexposure, and can properly enlarge the incident hole of the iris diaphragm at the place with insufficient light so as to increase the light inlet amount of the optical lens and avoid blurring of the shot picture. In the prior art, a magnet/coil structure is also often adopted as an actuating mechanism of the iris diaphragm device, an external power supply is required to supply power to the iris diaphragm device, and how to supply power to the iris diaphragm device is also a problem to be solved in the prior art.

Disclosure of Invention

An object of the present application is to provide a motor driving device with a simple circuit design, which is advantageous in simplifying connection of the motor driving device with an external power supply device.

Another object of the present application is to provide a motor driving device adapted to solve the power supply problem of the iris diaphragm mechanism.

Another object of the present application is to provide a motor driving apparatus for implementing functions of auto-focusing, optical anti-shake, and variable aperture of an optical lens.

Another object of the present application is to provide a motor driving device with compact structure, which is beneficial to miniaturizing the camera module.

Another object of the present application is to provide a motor driving device, which improves the connection mode between the outer frame and the base to realize stable connection between the outer frame and the base.

Another object of the present application is to provide an image capturing module with auto-focusing, optical anti-shake and iris function.

Another object of the present application is to provide an imaging module with compact structure.

The present application provides a motor driving device, comprising:

a base;

an outer frame movably supported on the base in a direction orthogonal to the optical axis and having a first side wall and a second side wall parallel to each other;

At least one supporting element which is arranged on the upper side of the base and movably supports the outer frame;

an inner frame disposed inside the outer frame and movable in an optical axis direction, the optical lens being adapted to be disposed inside the inner frame;

a focus driving mechanism for driving the inner frame to move along the optical axis direction;

the optical anti-shake driving mechanism is used for driving the outer frame to move in the direction orthogonal to the optical axis;

the side elastic pieces are connected with the base and the outer frame, the side elastic pieces are respectively arranged on the first side wall and the second side wall, and the side elastic pieces are suitable for elastic deformation to adapt to the relative displacement of the outer frame and the base.

Further, the motor driving device comprises two pairs of side elastic pieces, and the two pairs of side elastic pieces are symmetrically arranged at two ends of the first side wall and the second side wall.

Further, the motor driving device comprises an upper circuit system arranged on the inner frame and a lower circuit system arranged on the base, and two ends of the side elastic sheet are respectively connected with the upper circuit system and the lower circuit system in a conductive mode.

Further, the side elastic sheet includes a first positioning end portion electrically connected to the lower circuit system, a second positioning end portion electrically connected to the upper circuit system, and an elastic deformation portion elastically connecting the first positioning end and the second positioning end, where the elastic deformation portion includes a first elastic portion providing a first direction deformation amount and a second elastic portion providing a second direction deformation amount, so that the side elastic sheet is adapted to elastically deform to accommodate displacement of the outer frame relative to the base in the first direction and the second direction.

Further, the first elastic portion extends along the optical axis direction, the first elastic portion is parallel to the first side wall or the second side wall, the first direction is perpendicular to the first side wall or the second side wall, the second elastic portion is connected with the first elastic portion, the second elastic portion is provided with a plurality of bending portions, and the second direction is parallel to the first side wall or the second side wall.

Further, the bending portion is S-shaped.

Further, the upper circuit system comprises an upper circuit board and at least one communication elastic piece, the upper circuit board is arranged on the upper end face of the inner frame, the communication elastic piece is connected with the inner frame and the outer frame, one end of the communication elastic piece is electrically connected with the upper circuit board, and the other end of the communication elastic piece is electrically connected with the side elastic piece.

Further, the support element is a ball, and the base is adapted to move in a plane orthogonal to the optical axis under the support of the ball.

Further, the upper end surface of the base is provided with at least one first ball groove, the bottom surface of the outer frame is provided with a second ball groove opposite to the first ball groove, a ball movable cavity is defined between the first ball groove and the second ball groove, and the balls are arranged in the ball movable cavity, so that the outer frame is suitable for moving along the direction of the first ball groove or the second ball groove relative to the base.

Further, the extending directions of the first ball groove and the second ball groove are perpendicular to each other.

Further, both side walls of the first ball groove along the extending direction are in contact with the balls, and both side walls of the second ball groove along the extending direction are in contact with the balls.

Further, four corners of the upper end face of the base are respectively provided with a base supporting portion, the base supporting portions are protruded towards the outer frame, and the upper end face of the base supporting portions forms the first ball grooves.

Further, the motor driving device includes:

At least one common magnet pair arranged on the outer frame;

a focusing driving coil arranged outside the side wall of the inner frame, wherein the focusing driving coil is opposite to the common magnet pair, and the interaction of the focusing driving coil and the common magnet pair is suitable for driving the inner frame to move along the optical axis direction;

the optical anti-shake driving coil is arranged below the outer frame, the optical anti-shake driving coil is opposite to the common magnet pair, and interaction of the optical anti-shake driving coil and the common magnet pair is suitable for driving the outer frame to move in the direction perpendicular to the optical axis.

Further, the motor driving device comprises two common magnet pairs which are respectively arranged on a pair of side walls of the outer frame, wherein the side walls are parallel to each other.

Further, the motor driving device further comprises at least one optical anti-shake driving magnet pair, the optical anti-shake driving magnet pair is arranged on the side wall of the outer frame, the side wall of the outer frame is not provided with the common magnet pair, the optical anti-shake driving magnet pair is opposite to the optical anti-shake driving coil, and interaction between the optical anti-shake driving magnet pair and the optical anti-shake driving coil is suitable for driving the outer frame to move in the direction orthogonal to the optical axis.

Further, the motor driving device comprises two optical anti-shake driving magnet pairs which are respectively arranged on a pair of opposite side walls of the outer frame, wherein the side walls are not provided with the common magnet pairs.

Further, the motor driving device comprises a plurality of optical anti-shake driving coils, and each optical anti-shake driving magnet pair and each common magnet pair are opposite to one optical anti-shake driving coil.

Further, the thickness of the optical anti-shake driving magnet pair in the optical axis direction is smaller than that of the common magnet pair, the top surface of the optical anti-shake driving magnet pair is lower than that of the common magnet pair, and a first magnetic yoke for strengthening magnetic force circulation is arranged above the optical anti-shake driving magnet pair.

Further, a second magnetic yoke is arranged below the optical anti-shake driving magnet pair, and the second magnetic yoke is opposite to the first magnetic yoke.

Further, the first magnetic yoke and the second magnetic yoke are metal sheets, the first magnetic yoke is embedded in the outer frame, and the second magnetic yoke is arranged in the base.

Further, the supporting element is a ball, the upper end surface of the base is provided with at least one first ball groove, the bottom surface of the outer frame is provided with a second ball groove opposite to the first ball groove, and a ball movable cavity is defined between the first ball groove and the second ball groove; the end part of the first magnetic yoke extends into the second ball groove of the outer frame and forms the bottom surface of the second ball groove; the end of the second magnetic yoke extends into the first ball groove of the base and forms the bottom surface of the first ball groove.

The application also provides an image pickup module, which comprises an optical lens, a photosensitive assembly and the motor driving device, wherein the motor driving device is arranged around the optical lens, and the photosensitive assembly is arranged below the motor driving device and is used for receiving light rays converged by the optical lens and performing photoelectric conversion.

The beneficial effects of the present application will be described in detail in the detailed description.

Drawings

FIG. 1 is a schematic diagram of one embodiment of a motor drive of the present application;

FIG. 2 is an exploded view of one embodiment of the motor drive of the present application;

FIG. 3 is an exploded view of one embodiment of the motor drive of the present application;

FIG. 4 is an exploded view of one embodiment of the motor drive of the present application;

fig. 5 is a cross-sectional view of an inner frame and an outer frame of the motor driving device of the present application;

FIG. 6 is a cross-sectional view of the outer frame and base of the motor drive of the present application;

FIG. 7 is a partial top view of an embodiment of the motor drive of the present application showing the base, the upper wiring board disposed on the base, and the coil;

FIG. 8 is a partial bottom view of an embodiment of the motor drive of the present application showing an outer frame and magnets disposed on the outer frame;

FIG. 9 is a partial top view of an embodiment of the motor drive of the present application showing an outer frame disposed on a base;

FIG. 10 is a schematic diagram of one embodiment of an upper wiring system of the motor drive of the present application;

FIG. 11 is a schematic diagram of an embodiment of an upper circuit system, a side spring and a lower circuit system of a motor driving device according to the present application;

FIG. 12 is a schematic diagram of the circuit connection between the iris diaphragm mechanism and the upper circuit system according to the present application;

FIG. 13 is an exploded view of one embodiment of the iris diaphragm mechanism of the application;

FIG. 14 is an exploded view of one embodiment of the iris diaphragm device of the present application;

FIG. 15 is an exploded view of one embodiment of the iris diaphragm device of the present application;

in the figure: 1. a base; 11. a base light hole; 12. a base support; 121. a first ball groove; 122. a ball; 13. a pin installation position; 151. a chip accommodating hole; 152. a capacitor accommodating hole; 2. an outer frame; 21. a second ball groove; 22. the outer frame is provided with a light hole; 23. a bearing position; 25. an outer frame accommodating hole; 3. an inner frame; 31. the inner frame is provided with a light hole; 33. an extension; 34. an inner frame accommodating hole; 35. a coil line interface; 4. a wiring system; 41. an upper circuit board; 411. a first upper wiring part; 412. a second upper wiring part; 413. a third upper wiring part; 414. a fourth upper wiring part; 42. a focusing driving chip; 43. a communication spring plate; 431. a first mounting end; 432. a second mounting end; 433. an elastic connection part; 44. a position sensor; 401. a second external interface; 4011. an SCL external terminal; 4012. an SDA external terminal; 4013. a VSS external terminal; 4014. VDD external terminal; 402. a focus driving interface; 5. a lower line system; 51. a lower wiring board; 52. an optical anti-shake driving chip; 54. a capacitor; 501. a first external interface; 5011. a first pin; 5012. a second pin; 502. an optical anti-shake driving interface; 6. a side spring plate; 61. a first positioning end; 62. a second positioning end; 63. an elastic deformation portion; 631. a first elastic portion; 632. a second elastic part; 7. an optical anti-shake driving mechanism; 71. an optical anti-shake driving coil; 711. a first coil; 712. a second coil; 72. a common magnet pair; 73. an optical anti-shake driving magnet pair; 74. a first yoke; 8. a focus driving mechanism; 81. a focus driving coil; 9. a housing; 90. a housing light-passing hole; 10. a variable aperture mechanism; 101. a mounting shell; 100. an aperture light-transmitting hole; 102. a blade; 103. an aperture line board; 1031. an aperture line interface; 104. an aperture driving mechanism; 1041. a driving member; 1042. a driving magnet; 1043. a driving coil; 105. an aperture driving chip; 106. locking attachment pieces; 108. an elastic element.

Detailed Description

The present application will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present application that the device or element referred to must have a specific azimuth configuration and operation.

It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the present application, the description will be made using a vertical coordinate system (x, y, z), and the z-axis direction is the optical axis direction, and the optical axis orthogonal direction is the direction perpendicular to the optical axis.

The motor driving device shown in fig. 1 to 12 includes a base 1, an outer frame 2, an inner frame 3, an upper wiring system 4, a lower wiring system 5, a side spring 6, an optical anti-shake driving mechanism 7, a focus driving mechanism 8, a housing 9, and an iris mechanism 10.

The motor driving device is provided with a light passing hole for installing an optical lens (not shown in the figure), the optical anti-shake driving mechanism 7 is used for driving the optical lens to move along the orthogonal direction of the optical axis so as to realize the optical anti-shake function, the focusing driving mechanism 8 is used for driving the optical lens to move along the direction of the optical axis so as to realize the automatic focusing function, and the iris diaphragm mechanism 10 can adjust the light entering quantity of the optical lens according to the external light condition in the shooting process, so that better imaging effect can be obtained in different shooting environments. Those skilled in the art will appreciate that the components of the motor drive are either clear of the light aperture arrangement or have corresponding through holes such that the light aperture in which the optical lens is mounted extends through the motor drive.

As shown in fig. 3 and 4, the base 1 has a base light passing hole 11, the outer frame 2 is supported on the base 1 so as to be movable in the direction orthogonal to the optical axis, the outer frame 2 has an outer frame light passing hole 22 opposed to the base light passing hole 11, the inner frame 3 is provided in the outer frame light passing hole 22 so as to be movable in the direction of the optical axis, the inner frame 3 has an inner frame light passing hole 31 opposed to the base light passing hole 11, and the optical lens is adapted to be mounted in the inner frame light passing hole 31.

The focus drive mechanism 8 is for driving the inner frame 3 to move in the optical axis direction. In one embodiment, the focus drive coil 81 of the focus drive mechanism 8 is provided outside the side wall of the inner frame 3, and the magnet opposing the focus drive coil 81 is provided on the outer frame 2, and the inner frame 3 is driven to move in the optical axis direction with respect to the outer frame 2 by the interaction of the magnet and the coil.

The optical anti-shake driving mechanism 7 is for driving the outer frame 2 to move in the direction orthogonal to the optical axis. In one embodiment, the optical anti-shake driving coil 71 of the optical anti-shake driving mechanism 7 is provided on the base 1, the outer frame 2 is provided with a magnet opposite to the optical anti-shake driving mechanism coil 71, and the outer frame 2 is driven to move in the direction orthogonal to the optical axis with respect to the base 1 by the interaction of the magnet and the coil.

In some embodiments, at least one common magnet pair 72 is provided on the side wall of the outer frame 2, the common magnet pair 72 being opposite to the focus driving coil 81 in the direction orthogonal to the optical axis, the common magnet pair 72 being opposite to the first coil 711 of the optical anti-shake driving mechanism 7 in the direction of the optical axis. The arrangement of the common magnet is beneficial to simplifying the structure of the motor driving device and realizing the miniaturization of the motor driving device.

In some embodiments, the outer frame 2 is further provided with an optical anti-shake driving magnet pair 73, and the optical anti-shake driving magnet pair 73 and the common magnet pair 72 are disposed on different side walls of the outer frame 2. The optical anti-shake driving magnet pair 73 is opposed to the second coil 712 of the optical anti-shake driving mechanism 7 in the optical axis direction.

The interaction of the common magnet pair 72 with the first coil 711 of the optical anti-shake driving mechanism 7 drives the outer frame 2 to move in the first direction, and the interaction of the optical anti-shake driving magnet pair 73 with the second coil 712 of the optical anti-shake driving mechanism 7 drives the outer frame 2 to move in the second direction.

In one embodiment, as shown in fig. 8, the outer frame 2 has two pairs of parallel side walls, wherein a common magnet pair 72 is disposed on one pair of parallel side walls, and an optical anti-shake driving magnet pair 73 is disposed on the other pair of parallel side walls. As shown in fig. 7, the optical anti-shake driving mechanism 7 includes two first coils 711 and two second coils 712, the two first coils 711 being provided on opposite sides of the base 1, respectively, and the two second coils 712 being provided on the other opposite sides of the base 1, respectively, such that the two first coils 711 are respectively opposed to the common magnet pair 72, and the two second coils 712 are respectively opposed to the optical anti-shake driving magnet pair 73. The focus driving mechanism 8 has two focus driving coils 81 disposed on opposite side walls of the inner frame 3 such that the two focus driving coils 81 are respectively opposed to the two common magnet pairs 72.

By increasing the number of the first coils 711 and the second coils 712, the driving force of the optical anti-shake driving mechanism 7 to the outer frame 2 can be improved while also contributing to improvement in the accuracy of shake correction.

In some embodiments, as shown in fig. 5, the top surface of the optical anti-shake driving magnet pair 73 is lower than the top surface of the common magnet pair 72, and a first magnetic yoke 74 is disposed above the optical anti-shake driving magnet pair 73, where the first magnetic yoke 74 is used to strengthen the magnetic circulation of the optical anti-shake driving magnet pair 73, and reduce the magnetic interference generated by the common magnet pair 72 on the optical anti-shake driving magnet pair.

In some embodiments, as shown in fig. 6, the first yoke 74 is a metal sheet, and the first yoke 74 is embedded in the outer frame 2. Embedding the first yoke 74 within the outer frame 2 is advantageous in improving the strength of the outer frame 2.

Further, a second yoke (not shown) is provided below the pair of optical anti-shake driving magnets 73, and the second yoke is provided on the base 1 opposite to the first yoke 74. In some embodiments, the second yoke 75 is a metal sheet, which is embedded in the base 1. And magnetic yokes are arranged on the upper side and the lower side of the optical anti-shake driving magnet pair 73, so that the stress stability of the optical anti-shake driving magnet pair 73 is maintained.

As shown in fig. 3, the upper line system 4 is located at the upper part of the motor driving device, the lower line system 5 is located at the lower part of the motor driving device, and the upper line system 4 and the lower line system 5 are connected. Preferably, the upper circuit system 4 and the lower circuit system 5 are connected with a side spring 6 which is positioned on the side of the motor driving device.

The upper circuit system 4 is communicated with the focusing driving mechanism 8 and the iris diaphragm mechanism 10, the lower circuit system 5 is communicated with the optical anti-shake driving mechanism 7, the lower circuit system 5 is also suitable for being communicated with external power supply equipment, so that external electric signals are communicated with the upper circuit system 4 through the lower circuit system 5, and then are respectively communicated with the focusing driving mechanism 8 and the iris diaphragm mechanism 10 through the upper circuit system 4.

The application uses the upper circuit system 4 and the lower circuit system 5 to conduct the focusing driving mechanism 8 and the iris diaphragm mechanism 10 with external power supply equipment, thereby being beneficial to reducing exposed circuits and saving more space.

As shown in fig. 10, the upper circuit system 4 includes an upper circuit board 41, a focus driving chip 42, and a communication spring piece 43.

The upper wiring board 41 has a second external interface 401 and a focus drive interface 402, the iris mechanism 10 is connected to the upper wiring board 41 through the second external interface 401, and the focus drive mechanism 8 is connected to the upper wiring board 41 through the focus drive interface 402.

Further, the upper wiring board 41 has at least one upper wiring portion, which is conducted with the lower wiring system 5 on the one hand and the second external interface 401 on the other hand, so that the electrical signal is conducted from the lower wiring system 5 to the second external interface 401 by the relay of the upper wiring board 41.

In some embodiments, the upper wiring board 41 has a plurality of upper wiring parts, and the second external interface 401 includes a plurality of external terminals, each of which is electrically connected to each of the upper wiring parts in a one-to-one correspondence, and the iris mechanism 10 is electrically connected to each of the external terminals.

In one particular embodiment, second external interface 401 includes SCL external terminal 4011, SDA external terminal 4012, VSS external terminal 4013, and VDD external terminal 4014. The upper wiring board 41 has a first upper wiring portion 411, a second upper wiring portion 412, a third upper wiring portion 413, and a fourth upper wiring portion 414, the first upper wiring portion 411 being in conduction with the SCL external terminal 4011, the second upper wiring portion 412 being in conduction with the SDA external terminal 4012, the third upper wiring portion 413 being in conduction with the VSS external terminal 4013, and the fourth upper wiring portion 414 being in conduction with the VDD external terminal 4014.

A part of the interface of the focus drive chip 42 is conducted with each upper wiring portion of the upper wiring board 41, so that different electric signals from the lower wiring system 5 are input to the focus drive chip 42 through each upper wiring portion. The other part of the interface of the focus driving chip 42 is conducted with the focus driving interface 402 of the upper wiring board 41, so that the electric signal of the focus driving chip 42 is output to the focus driving mechanism 8 through the focus driving interface 402.

In one embodiment, the coil of the focus driving mechanism 8 is electrically connected to the focus driving interface 402, that is, the coil of the focus driving mechanism 8 is electrically connected to the focus driving chip 42 through the upper circuit board 41.

In one embodiment, the focus driving chip 42 has an Out1 terminal 421, an Out2 terminal 422, an SCL terminal 423, an SDA terminal 424, a VSS terminal 425, and a VDD terminal 426, the SCL terminal 423 is in conduction with the first upper wiring portion 411, the SDA terminal 424 is in conduction with the second upper wiring portion 412, the VSS terminal 425 is in conduction with the third upper wiring portion 413, and the VDD terminal 426 is in conduction with the fourth upper wiring portion 414. The focus drive interface 402 has a first focus drive terminal 4021 and a second focus drive terminal 4022 that are respectively connected to the Out1 terminal 421 and the Out2 terminal 422, and the positive and negative electrodes of the coil of the focus drive mechanism 8 are respectively connected to the first focus drive terminal 4021 and the second focus drive terminal 4022.

The upper circuit board 41 is disposed on the upper end surface of the inner frame 3, the communication spring 43 connects the inner frame 3 and the outer frame 2, and the communication spring 43 connects the upper wiring portion of the upper circuit board 41 with the side spring 6. The communicating elastic sheet 43 can realize elastic connection between the inner frame 3 and the outer frame 2, and after the inner frame 3 is displaced relative to the outer frame 2, the communicating elastic sheet 43 can ensure that the inner frame 3 is restored to the initial position, that is, the communicating elastic sheet 43 enables the inner frame 3 and the outer frame 2 to maintain a relatively stable state. In addition, the communication spring piece 43 also realizes the electric signal conduction between the upper circuit board 41 and the side spring piece 6, so that the electric signal of the lower circuit system 5 reaches the upper circuit board 41 through the side spring piece 6 and the communication spring piece 43.

In a preferred embodiment, the number of the communicating elastic pieces 43 is identical to the number of the side elastic pieces 6, and each communicating elastic piece 43 is electrically connected to one side elastic piece 6. The number of the communication elastic pieces 43 is also identical to the number of the upper wiring portions of the upper circuit board 41, and each communication elastic piece 43 is electrically connected with one upper wiring portion.

The lower circuit system 5 includes a lower circuit board 51, at least one optical anti-shake driving chip 52, and a first external interface 501.

The lower circuit board 51 is disposed on the base 1, and the side spring 6 is electrically connected to the lower circuit board 51.

The lower wiring board 51 has lower wiring portions corresponding to the upper wiring portions of the upper wiring board 41 one by one, and the communication spring pieces 43 and the side spring pieces 6 electrically connect the upper wiring portions and the lower wiring portions one by one.

As shown in fig. 7, the lower circuit board 51 is provided with an optical anti-shake driving interface 502, and the optical anti-shake driving interface 502 is electrically connected with the optical anti-shake driving mechanism 7; the optical anti-shake driving chip 52 is connected to the optical anti-shake driving interface 502, so that the optical anti-shake driving mechanism 7 is connected to the optical anti-shake driving chip 52 through the lower circuit board 51.

In one embodiment, the optical anti-shake driving mechanism 7 includes a plurality of coils, the lower circuit board 51 has a plurality of optical anti-shake driving interfaces 502, and each optical anti-shake driving interface 502 conducts the coil of each optical anti-shake driving mechanism 7 to the optical anti-shake driving chip 52.

In one embodiment, the optical anti-shake driving mechanism 7 includes a plurality of first coils 711 and a plurality of second coils 712, and the lower circuit board 51 includes two optical anti-shake driving chips 52, and each of the first coils 711 and each of the second coils 712 are respectively conducted to different optical anti-shake driving chips 52, so as to realize independent control of the first coils 711 and the second coils 712.

The first external interface 501 is provided on the lower wiring board 51 or the base 1, and the external power supply device is adapted to be conducted to the lower wiring board 51 through the first external interface 501.

The first external interface 501 has at least one first pin 5011, where the first pin 5011 is suitable for electrically connecting with an external power supply device, and the first pin 5011 is conducted in one-to-one correspondence with the lower terminal of the lower circuit board 51, so that an electrical signal of the external power supply device reaches each external terminal of the second external interface 401 through the first pin 5011, the line of the lower circuit board 51, the lower terminal, the side spring 6, the communication spring 43, the upper terminal, and the line of the upper circuit board 41.

As shown in fig. 3, the first external interface 501 further has at least one second pin 5012, the second pin 5012 is suitable for being electrically connected to an external power supply device, and the second pin 5012 is electrically connected to the optical anti-shake driving chip 52 through the lower circuit board 51.

In some embodiments, the first external interface 501 is disposed on the base 1, and each of the first pin 5011 and the second pin 5012 is in communication with the lower wiring board 51 through a conductor embedded in the base 1. The conductors embedded in the base 1 may be, but are not limited to, metal wires.

In a particular embodiment, the first external interface 501 includes four first pins 5011 and four second pins 5012.

In some embodiments, one side edge of the base 1 has a pin mounting location 13, and each of the first pin 5011 and the second pin 5012 is disposed in the pin mounting location 13. One end of each of the first and second pins 5011 and 5012 extends to the outside of the chassis 1.

In some embodiments, as shown in fig. 4, the base 1 has a chip accommodating hole 151 for accommodating the optical anti-shake driving chip 52, and the optical anti-shake driving chip 52 is disposed in the chip accommodating hole 151 to reduce the overall height of the motor driving device.

In some embodiments, the lower circuit system 5 further includes a capacitor 54 used with the optical anti-shake driving chip 52, the base 1 has a capacitor accommodating hole 152 for accommodating the capacitor 54, and the capacitor 54 is disposed in the capacitor accommodating hole 152 to reduce the overall height of the motor driving device.

As shown in fig. 10 and 11, the communication elastic piece 43 includes a first mounting end 431 provided on the upper end surface of the inner frame 3, a second mounting end 432 provided on the upper end surface of the outer frame 2, and an elastic connection portion 433 elastically connecting the first mounting end 431 and the second mounting end 432; the side spring 6 includes a first positioning end 61 provided on the base 1, a second positioning end 62 provided on a side surface of the outer frame 2, and an elastic deformation portion 63 elastically connecting the first positioning end 61 and the second positioning end 62. The first mounting end 431 of the communicating spring piece 43 is electrically connected to the upper wiring portion of the upper circuit board 41, the second mounting end 432 of the communicating spring piece 43 is electrically connected to the second positioning end 62 of the side spring piece 6, and the first positioning end 61 of the side spring piece 6 is electrically connected to the lower wiring portion of the lower circuit board 51.

In some embodiments, the motor driving device further includes at least one supporting member provided at an upper side of the base 1 and movably supporting the outer frame 2. The outer frame 2 has a first side wall and a second side wall parallel to each other, a pair of side elastic pieces 6 are respectively disposed along the first side wall and the second side wall, and the side elastic pieces 6 are adapted to elastically deform to adapt to the relative displacement of the outer frame 2 and the base 1.

In a preferred embodiment, the motor driving device comprises two pairs of side elastic pieces 6, and the two pairs of side elastic pieces 6 are symmetrically arranged at two ends of the first side wall and the second side wall.

Further, as shown in fig. 11, the elastic deformation portion 63 of the side elastic piece 6 includes a first elastic portion 631 providing a deformation amount in the first direction and a second elastic portion 632 providing a deformation amount in the second direction, so that the side elastic piece 6 is adapted to elastically deform to accommodate displacement of the outer frame 2 with respect to the base 1 in the first direction and the second direction.

Further, the first elastic portion 631 extends along the optical axis direction, the first elastic portion 631 is parallel to the first side wall or the second side wall of the outer frame 2, the first direction is perpendicular to the first side wall or the second side wall, the second elastic portion 632 is connected to the first elastic portion 631, the second elastic portion 632 has a plurality of curved portions, the curved portions are S-shaped, and the second direction is parallel to the first side wall or the second side wall. I.e. the first direction and the second direction are perpendicular to each other.

In a preferred embodiment, as shown in fig. 3, the support element is a ball 122, and the base 1 is adapted to move in a plane orthogonal to the optical axis, supported by the ball 122.

Friction reduction is achieved by the balls 122. The outer frame 2 and the base 1 are movably matched through the ball and ball groove structure, so that the height of the motor driving device is reduced, and the miniaturization of the whole structure is realized. It should be noted that the balls 122 may be single or plural.

Further, the upper end surface of the base 1 has at least one first ball groove 121, the bottom surface of the outer frame 2 has a second ball groove 21 opposite to the first ball groove 121, a ball moving cavity is defined between the first ball groove 121 and the second ball groove 21, and the ball 122 is disposed in the ball moving cavity, so that the outer frame 2 is adapted to move along the direction of the first ball groove 121 or the second ball groove 21 relative to the base 1.

Further, the extending directions of the first ball grooves 121 and the second ball grooves 21 are perpendicular to each other, so that the outer frame 2 is defined by the balls 122 and the ball movable chambers to be displaced in two directions perpendicular to each other.

In one embodiment, the extending directions of the first ball groove 121 and the second ball groove 21 are the first direction and the second direction, respectively.

Further, both side walls of the first ball groove 121 in the extending direction are in contact with the balls 122, both side walls of the second ball groove 21 in the extending direction are in contact with the balls 122, that is, the first ball groove 121 restricts the balls 122 from rolling in the extending direction of the first ball groove 121, and the second ball groove 21 restricts the balls 122 from rolling in the extending direction of the second ball groove 21.

In some embodiments, four corners of the upper end surface of the base 1 are respectively provided with a base support portion 12, the base support portion 12 protrudes toward the outer frame 2, the base support portion 12 is integrally formed with the base 1, and the upper end surface of the base support portion 12 forms a first ball groove 121.

In some embodiments, as shown in fig. 6, the end of the first yoke 74 embedded in the outer frame 2 extends into the second ball groove 21 and forms the bottom surface of the second ball groove 21. The first yoke 74 made of metal has a smaller surface roughness than the outer frame 2 made of plastic, and the balls 122 are in contact with the surface of the first yoke 74, which is advantageous in reducing friction force when the balls 122 roll. The first magnetic yoke 74 made of metal is arranged inside the outer frame 2, so that the strength of the plastic frame can be further increased, and the stability of the whole structure can be improved.

In some embodiments, the second yoke end extends into the first ball groove 121 of the base 1 and forms the bottom surface of the first ball groove 121, so that friction force when the balls 122 roll is reduced, the second yoke made of metal is disposed inside the base 1, strength of the plastic base can be further increased, and stability of the overall structure is improved.

In some embodiments, as shown in fig. 5, the outer frame 2 is extended in the direction of the inner frame 3 to form a plurality of rest positions 23, the inner frame 3 has a plurality of extension portions 33 extended toward each rest position 23, and the inner frame 3 is supported on the outer frame 2 movably along the optical axis by the extension portions 33.

The extension 33 of the inner frame 3 has an inner frame accommodating hole 34 for accommodating the focus drive chip 42. The accommodation of the focus drive chip 42 in the extension 33 of the inner frame 3 is advantageous in reducing the overall height of the motor drive device.

Further, the bearing position 23 of the outer frame 2 has an outer frame accommodating hole 25 opposite to the inner frame accommodating hole 34, and a position sensor 44 for performing position detection is provided in the outer frame accommodating hole 25. The positioning of the position sensor 44 in the rest position 23 of the outer frame 2 is also advantageous for reducing the overall height of the motor drive.

Further, the extension 33 of the inner frame 3 has a coil wire interface 35 thereon, and the coil wire interface 35 is electrically connected to a focus drive interface 402 on the upper wire board 41. A part of the coil of the focus drive mechanism 8 is integrally formed with the inner frame 3 by a molding process and is conducted to the coil wire interface 35. It should be noted that, when the focus driving mechanism 8 includes a plurality of coils, each coil is conducted to the coil line interface 35.

In some embodiments, the rest position 23 is located on a side wall of the outer frame 2 where the optical anti-shake driving magnet pair 73 is disposed, and the first yoke 74 is disposed between the rest position 23 and the optical anti-shake driving magnet pair 73. In some embodiments, first yoke 74 may be mounted on the bottom surface of bearing position 23.

The housing 9 has a housing light passing hole 90, and the housing 9 is disposed on the base 1 so as to hold the outer frame 2, the inner frame 3, the upper wiring system 4, the lower wiring system 5, the side spring 6, the optical anti-shake driving mechanism 7, and the focus driving mechanism 8 in a cavity between the housing 9 and the base 1.

In some embodiments, the housing 9 has relief holes at locations opposite the second external interface 401 to allow the wiring board of the iris mechanism 10 to extend from above the housing 9 to the second external interface 401.

In some embodiments, the housing 9 has pin pre-holes near the pin mounting locations 13 to allow the pins of the first external interface 501 to extend outside the housing 9 to connect with an external power supply device.

In one embodiment, as shown in fig. 12, the variable aperture mechanism 10 includes an aperture driving mechanism 104, an aperture wiring board 103, and an aperture driving chip 105, the aperture driving chip 105 being in communication with the aperture driving mechanism 104 through the aperture wiring board 103, the aperture driving chip 105 being also in communication with a second external interface 401 through the aperture wiring board 103.

Further, the diaphragm line board 103 extends out of the diaphragm line interface 1031 toward the second external interface 401 of the upper line board 41, and the diaphragm line interface 1031 is electrically connected to the second external interface 401.

In one embodiment, aperture line interface 1031 includes four aperture line terminals, SCL aperture line terminal, SDA aperture line terminal, VSS aperture line terminal, and VDD aperture line terminal, which are electrically connected to SCL external terminal 4011, SDA external terminal 4012, VSS external terminal 4013, and VDD external terminal 4014, respectively, of second external interface 401.

Further, the diaphragm line board 103 is an FPC line board adapted to be bent so that the diaphragm line interface 1031 is close to the second external interface 401.

Further, the SCL diaphragm line terminal and the SDA diaphragm line terminal are located on one side of the diaphragm line board 103, and the VSS diaphragm line terminal and the VDD diaphragm line terminal are located on the other side of the diaphragm line board 103, that is, two sets of diaphragm line terminals are located on both sides of the diaphragm line board 103, respectively, and extend from both sides of the light passing hole to the upper line board 41, respectively.

In the application, the upper circuit system 4 is mainly used for realizing the conduction of the circuit of the iris diaphragm mechanism 10 and the circuit of the focusing driving mechanism 8, and the upper circuit system and the focusing driving mechanism share one circuit board for conduction, so that the design of the circuit can be simplified, and the miniaturization of the whole structure can be ensured. In addition, the upper circuit system 4 and the lower circuit system 5 are communicated through the side elastic sheet 6, so that an integral loop is formed, and the first external interface 501 on the base 1 is welded with an external circuit for providing current in the whole motor driving device during operation.

In one embodiment, as shown in fig. 13-15, the iris diaphragm mechanism 10 includes a mounting housing 101, a plurality of blades 102, a diaphragm circuit board 103, and a diaphragm driving mechanism 104. The middle part of the installation shell 101 forms a diaphragm light-passing hole 100, a blade 102 is movably arranged on the installation shell 101 to form an aperture-adjustable entrance hole, a diaphragm driving mechanism 104 is used for driving the blade 102 to move to adjust the aperture of the entrance hole, and a diaphragm circuit board 103 is communicated with the diaphragm driving mechanism 104 and used for controlling the work of the diaphragm driving mechanism 104.

The iris diaphragm mechanism 10 is held above the housing 9, and may bear against the optical lens, or may bear against the housing 9, to which the present application is not limited.

In a preferred embodiment, the aperture drive mechanism 104 is a magnet/coil structured drive mechanism. Specifically, the diaphragm driving mechanism 104 includes a driver 1041, a driving magnet 1042, and a driving coil 1043. The driving piece 1041 is movably arranged on the mounting shell 101 and configured to drive the blade 102 to rotate when moving so as to adjust the aperture of the inlet hole; the driving magnet 1042 is disposed on the driving member 1041; the driving coil 1043 is disposed opposite to the driving magnet 1042, the driving coil 1043 is disposed on the mounting housing 101 or on the aperture circuit board 103, and the driving coil 1043 is in conductive communication with the aperture circuit board 103, so that the driving member 1041 is moved to drive the blade 102 to rotate by interaction of the driving coil 1043 and the driving magnet 1042.

In the working process of the motor driving device, firstly, according to the environment of a shot object, the size of an incident hole is automatically adjusted in advance so that the light flux of an optical lens is proper, and then the optical anti-shake driving mechanism 7 and the focusing driving mechanism 8 are utilized for anti-shake and focusing, and then imaging is carried out.

The diaphragm circuit board 103 and the diaphragm driving mechanism 104 of the iris mechanism 10 of the present application are disposed on the mounting housing 101 so as to avoid the diaphragm aperture 100, and the blade 102, the diaphragm driving mechanism 104 and the diaphragm circuit board 103 are disposed on the mounting housing 101 in this order along the optical axis direction, so that the axial space of the mounting housing 101 can be fully utilized to dispose each part, and the radial dimension of the iris mechanism 10 can be prevented from being excessively large.

The bottom surface of the mounting housing 101 opposite to the diaphragm circuit board 103 is provided with a receiving hole for receiving a component on the diaphragm circuit board 103, so that the component which protrudes from the diaphragm circuit board 103 and occupies a large space is received in the receiving hole of the mounting housing 101, and the diaphragm circuit board 103 is tightly attached to the mounting housing 101, thereby being beneficial to reducing the axial dimension of the iris diaphragm mechanism 10 and also playing a role in protecting components.

Further, the diaphragm wiring board 103 and the driving piece 1041 are respectively provided on both sides of the mounting case 103 in the optical axis direction, a coil through hole for accommodating the driving coil 1043 is provided on the bottom surface of the mounting case 103, and the driving coil 1043 is provided on the diaphragm wiring board 103 and extends from the diaphragm wiring board 103 into the coil through hole so that the driving coil 1043 is opposed to the driving magnet 1042 provided on the bottom surface of the driving piece 1041. Further, the driving coil 1043 is provided at a position of the diaphragm circuit board 103 near the edge, and the side surface of the coil through hole communicates with the outside, so that the structure of the mounting case 101 can be simplified, and the overall weight of the mounting case 101 can be reduced.

The driving member 1041 has a circular ring shape and is rotatably provided on the mounting housing 101. The driving element 1041 has a mounting groove in a bottom surface opposite to the driving coil 1043, and the driving magnet 1043 is fitted into the mounting groove.

The drive member 1041 is provided with a section of the drive magnet 1042 extending radially outwardly to form an enlarged end to provide sufficient space to embed the drive magnet 1042. Further, in view of saving the internal space, the mounting housing 101 forms a relief opening opposite to the enlarged end of the driving member 1041, and the width of the relief opening is larger than that of the enlarged end, so that the enlarged end can rotate in the relief opening when the driving member 1041 rotates. The provision of the relief opening is advantageous in reducing the size of the iris mechanism 10, avoiding interference with the mounting housing 101 when the driving member 1041 rotates, and in addition, limiting the rotation angle of the driving member 1041.

The plurality of blades 102, one end of each blade 102 is rotatably connected with the mounting housing 101, and the other end extends above the aperture light-passing hole 100, so that the plurality of blades 102 define an aperture-adjustable entrance hole in combination, and each blade 102 is connected with the driving member 1041 so that the driving member 1041 rotates to drive each blade 102 to rotate to adjust the aperture of the entrance hole.

The blade 102 has a positioning hole, the mounting housing 101 has a positioning post matching with the positioning hole, and the blade 102 rotates around the positioning post. That is, the vane 102 is rotatably connected with the mounting housing 101 through the positioning hole and the positioning post. The blade 102 is also provided with a movable hole, the driving piece 1041 is provided with a limit post in sliding fit with the movable hole, the movable hole is provided with a travel space for the limit post to slide, and when the driving piece 1041 rotates, the limit post moves in the movable hole and drives the blade 102 to rotate. It should be noted that the stroke space of the movable hole may limit the rotation angle of the blade 102, so as to ensure that the blade 102 rotates between a preset angle range.

In some embodiments, the diaphragm circuit board 103 is a flexible printed circuit board, and by fitting the bottom surface of the mounting case 101, flatness of the diaphragm circuit board 103 can be ensured. Further, the diaphragm circuit board 103 may be adhesively fixed to the bottom surface of the mounting case 101 to increase the flatness of the diaphragm circuit board 103.

Further, the positioning members are disposed on the bottom surface of the mounting housing 101, and the circuit board positioning through holes are disposed at the corresponding positions of the aperture circuit board 103, so that the mounting position of the aperture circuit board 103 can be positioned by the cooperation of the circuit board positioning through holes and the positioning members, and the assembly process is more convenient.

In some embodiments, iris mechanism 10 further includes a locking tab 106, with locking tab 106 disposed on mounting housing 101 to clear aperture 100 and retain blade 102 between locking tab 106 and mounting housing 101. The provision of locking tab 106 advantageously improves the overall stability of iris mechanism 10, as well as protects the internal components. Further, a black object is provided on the object side surface of the locking piece 106 for preventing reflection of light. Further, the mounting case 101 has a positioning block on a surface opposite to the locking piece 106, the locking piece 106 forms a positioning groove at a position corresponding to the positioning block, and the locking piece 106 is held at a preset position of the mounting case 101 by cooperation of the positioning block and the positioning groove.

Further, the locking piece 106 is provided with a avoiding hole for preventing interference with the positioning post and the limiting post. In order to make the structure of the iris mechanism 10 as compact as possible, it is necessary to reduce the gap between the lock attachment piece 106 and the blade 102, and in order to improve the mounting stability of the blade 102 and the positioning and stopper posts, the heights of the positioning and stopper posts should not be too low, and based on the above consideration, the lock attachment piece 106 is provided with the avoiding hole, so that the heights of the positioning and stopper posts may exceed the blade 102, and the increase of the overall thickness of the iris mechanism 10 may be avoided.

The aperture plate 103 and the locking piece 106 may be of a circular ring configuration so as to be integrally provided on the mounting case 101 around the light passing hole 100, and the aperture of the center of the circular ring is preferably not smaller than the maximum aperture of the entrance hole, so that the light flux is determined by the aperture of the entrance hole. The aperture plate 103 and the locking tab 106 may also be designed as separate parts, so that they are arranged on the mounting housing 101 in circumferential sections.

In some embodiments, the bottom surface of the driving piece 1041 has a first part, the mounting case 101 has a second part opposite to the first part, and the driving piece 1041 and the mounting case 101 are contacted by the first part and the second part in the optical axis direction. When the driving member 1041 rotates relative to the mounting housing 101, the friction force between the driving member 1041 and the mounting housing 101 increases the requirement for driving force, and by reducing the contact area between the driving member 1041 and the mounting housing 101, the friction force between the driving member 1041 and the mounting housing 101 in the embodiment is reduced, and the friction force when the driving member 1041 moves relative to the mounting housing 101 can be reduced by contacting the first component and the second component.

In some embodiments, the first and second members are a boss and a chute, respectively, in which the boss slides as the drive 1041 rotates relative to the mounting housing 101. The design of boss and spout can ensure not increasing under the condition of whole thickness, reduces the area of contact between driving piece 1041 and the installation casing 101, has realized the make full use of inner space, moreover through the cooperation of boss and spout, also can carry out spacing to the displacement of driving piece 1041 to ensure that driving piece 1041 rotates along predetermineeing the direction in predetermineeing the angle range.

In some variant embodiments, the first and second parts are balls and ball grooves, respectively, the balls being adapted to roll in the ball grooves, the ball grooves being adapted to limit the displacement of the balls to ensure that the drive 1041 rotates in a predetermined direction within a predetermined angular range.

Further, the number of the first members and the second members is at least two and is equally spaced along the circumference of the diaphragm aperture 10 to ensure the stability of the support.

Further, an elastic element 108 may be disposed between the mounting housing 101 and the driving member 1041, one end of the elastic element 108 is fixed on the driving member 1041, the other end is fixed on the mounting housing 101, and the mounting positions of the elastic element 108 on the mounting housing 101 and the driving member 1041 are equal, as shown in fig. 13, that is, the elastic element 108 is located in a plane perpendicular to the optical axis after being mounted, and the elastic element 108 functions as: providing a resilience force for restoring the driving member 1041 to the initial position, that is, after the working state is finished, the elastic element 108 can rotate the driving member 1041 relative to the mounting housing 101 to restore to the original state; the elastic member 108 also serves to connect the mounting case 101 and the driving member 1041, and when the diaphragm mechanism 10 receives an external force, it is ensured that the two do not move relative to each other, and various problems caused by collision of the internal components can be avoided.

According to an aspect of the present application, there is provided a motor driving apparatus including: a focusing driving mechanism 8 for driving an optical lens to move along the optical axis; an iris diaphragm mechanism 10 for adjusting the light quantity of the optical lens; an upper line system 4 located on the upper side of the motor driving device, the upper line system 4 being respectively connected to the focus driving mechanism 8 and the iris mechanism 10; and a lower line system 5 positioned at the lower side of the motor driving device, wherein the lower line system 5 is communicated with the upper line system 4, and the lower line system 5 is suitable for being communicated with external power supply equipment.

The motor driving device utilizes the upper circuit system 4 and the lower circuit system 5 to conduct the focusing driving mechanism 8 and the iris diaphragm mechanism 10 to external power supply equipment, thereby being beneficial to simplifying circuit design and realizing miniaturization of the whole structure.

According to another aspect of the present application, there is provided a motor driving apparatus comprising: a base 1; an outer frame 2 supported movably on the base 1 in a direction orthogonal to the optical axis and having a first side wall and a second side wall parallel to each other; at least one supporting member provided on an upper side of the base 1 and movably supporting the outer frame 2; an inner frame 3 disposed inside the outer frame 2 and movable in the optical axis direction, the optical lens being adapted to be disposed inside the inner frame 3; a focus drive mechanism 8 for driving the inner frame 3 to move in the optical axis direction; an optical anti-shake driving mechanism 7 for driving the outer frame 2 to move in the direction orthogonal to the optical axis; the side elastic pieces 6 are connected with the base 1 and the outer frame 2, and the side elastic pieces 6 are respectively arranged on the first side wall and the second side wall, and the side elastic pieces 6 are suitable for elastic deformation to adapt to the relative displacement of the outer frame 2 and the base 1.

The motor driving device realizes the movement of the outer frame 2 in the plane orthogonal to the optical axis by utilizing the cooperation of the supporting element and the side elastic sheet 6. The support element enables the outer frame 2 to displace in a plurality of directions relative to the base 1, the side elastic sheet 6 enables the connection between the outer frame 2 and the base 1 to be more stable, and after the outer frame 2 displaces, the outer frame 2 can be driven to recover to the initial position.

The application also provides an image pickup module, which comprises the motor driving device, an optical lens (not shown in the figure) arranged in the light passing hole of the motor driving device and a photosensitive assembly (not shown in the figure), wherein the photosensitive assembly is arranged below the motor driving device and opposite to the base light passing hole 11, and is used for receiving light converged by the optical lens and performing photoelectric conversion.

The foregoing has outlined the basic principles, features, and advantages of the present application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present application, and various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of the application is defined by the appended claims and equivalents thereof.

Claims

1. A motor driving device, comprising:

a base;

2. The motor drive of claim 1, wherein the motor drive comprises two pairs of the side spring plates symmetrically disposed at both ends of the first side wall and the second side wall.

3. The motor driving device according to claim 1, wherein the motor driving device comprises an upper line system provided on the inner frame and a lower line system provided on the base, and both ends of the side elastic sheet are electrically connected with the upper line system and the lower line system, respectively.

4. A motor drive according to claim 3, wherein the side spring piece includes a first positioning end portion electrically connected to the lower wiring system, a second positioning end portion electrically connected to the upper wiring system, and an elastically deforming portion elastically connecting the first positioning end and the second positioning end, the elastically deforming portion including a first elastic portion providing a first directional deformation amount and a second elastic portion providing a second directional deformation amount, whereby the side spring piece is adapted to elastically deform to accommodate displacement of the outer frame relative to the base in the first direction and the second direction.

5. The motor drive device according to claim 4, wherein the first elastic portion extends in an optical axis direction, the first elastic portion is parallel to the first side wall or the second side wall, the first direction is perpendicular to the first side wall or the second side wall, the second elastic portion is connected to the first elastic portion, the second elastic portion has a plurality of curved portions, and the second direction is parallel to the first side wall or the second side wall.

6. The motor drive of claim 5, wherein the curved portion is S-shaped.

7. The motor driving device according to claim 3, wherein the upper circuit system comprises an upper circuit board and at least one communication spring, the upper circuit board is disposed on an upper end surface of the inner frame, the communication spring connects the inner frame and the outer frame, one end of the communication spring is electrically connected with the upper circuit board, and the other end of the communication spring is electrically connected with the side spring.

8. A motor drive according to any one of claims 1-7, wherein the support element is a ball, and the base is adapted to move in a plane orthogonal to the optical axis under the support of the ball.

9. The motor driving device according to claim 8, wherein the upper end surface of the base has at least one first ball groove, the bottom surface of the outer frame has a second ball groove opposite to the first ball groove, a ball moving cavity is defined between the first ball groove and the second ball groove, and the balls are disposed in the ball moving cavity so that the outer frame is adapted to move in a direction of the first ball groove or the second ball groove with respect to the base.

10. The motor drive of claim 9, wherein the first ball groove and the second ball groove extend in directions perpendicular to each other.

11. The motor drive apparatus according to claim 9, wherein both side walls of the first ball groove in the extending direction are in contact with the balls, and both side walls of the second ball groove in the extending direction are in contact with the balls.

12. The motor driving device according to claim 9, wherein each of four corners of the upper end face of the base has a base support portion, the base support portion is protruded in the direction of the outer frame, and the upper end face of the base support portion forms the first ball groove.

13. The motor drive according to any one of claims 1 to 7, characterized by comprising:

at least one common magnet pair arranged on the outer frame;

14. The motor drive of claim 13, comprising two pairs of the common magnets disposed on respective ones of the outer frame pair of parallel side walls.

15. The motor drive of claim 13, further comprising at least one optical anti-shake driving magnet pair disposed on a side wall of the outer frame where the common magnet pair is not disposed, the optical anti-shake driving magnet pair being opposite to the optical anti-shake driving coil, interaction of the optical anti-shake driving magnet pair with the optical anti-shake driving coil being adapted to drive the outer frame to move in an orthogonal direction of an optical axis.

16. The motor drive of claim 15, comprising two pairs of the optical anti-shake driving magnets disposed on a pair of opposite side walls of the outer frame where the pair of the common magnets is not disposed, respectively.

17. The motor drive of claim 15, wherein the motor drive comprises a plurality of the optical anti-shake drive coils, each of the optical anti-shake drive magnet pairs and each of the common magnet pairs being opposite one of the optical anti-shake drive coils.

18. The motor drive device according to claim 15, wherein the optical anti-shake drive magnet pair has a smaller thickness in the optical axis direction than the common magnet pair, a top surface of the optical anti-shake drive magnet pair is lower than a top surface of the common magnet pair, and a first yoke for reinforcing circulation of magnetic force is provided above the optical anti-shake drive magnet pair.

19. The motor drive of claim 18, wherein a second yoke is further disposed below the pair of optical anti-shake driving magnets, the second yoke being opposite to the first yoke.

20. The motor drive of claim 19, wherein the first and second yokes are sheet metal, the first yoke is embedded in the outer frame, and the second yoke is disposed in the base.

21. The motor driving device according to claim 20, wherein the supporting member is a ball, the upper end surface of the base has at least one first ball groove, the bottom surface of the outer frame has a second ball groove opposite to the first ball groove, and a ball moving cavity is defined between the first ball groove and the second ball groove;

The end part of the first magnetic yoke extends into the second ball groove of the outer frame and forms the bottom surface of the second ball groove;

the end of the second magnetic yoke extends into the first ball groove of the base and forms the bottom surface of the first ball groove.

22. An image pickup module, comprising an optical lens, a photosensitive assembly and a motor driving device according to any one of claims 1 to 22, wherein the motor driving device is disposed around the optical lens, and the photosensitive assembly is disposed below the motor driving device and is used for receiving light collected by the optical lens and performing photoelectric conversion.