Driving device, camera module and electronic equipment

Abstract

The invention discloses a driving device, a camera module and electronic equipment, and belongs to the technical field of electronic equipment. The driving device comprises a base, a frame and a lens holder. The frame can move on a first plane relative to the base and is provided with a first accommodating space; the lens frame is configured to be connected with a lens, and at least part of the structure of the lens frame is located in the first accommodating space; guiding columns are arranged between the lens frame and the frame so as to guide movement of the lens frame relative to the frame in the first direction, and a first angle is formed between the first direction and the first plane. The camera module comprises a lens and the driving device. The electronic equipment comprises a shell and the camera module. According to the invention, the contact amount between the guide column and the lens frame and the contact amount between the guide column and the frame are increased, so that the technical problem that a ball impacts a pit on the inner wall of the guide rail in the prior art can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a driving device, a camera module and an electronic equipment. Background Art

[0002] With the development of technology, electronic devices such as mobile phones, tablet computers, and laptops have gradually become popular, and mobile phones have become an indispensable device in people's daily lives. Mobile phones can meet people's daily communication, photography and other needs. For this reason, mobile phones are equipped with camera modules, and the camera modules use motors to drive the lens. Most motors use VCM (Voice Coil Motor) motors to achieve auto focus (AF) and optical image stabilization (OIS) functions. VCM motors are divided into ball motors and spring-clip suspension motors; for ball motors, it realizes the relative movement of the lens by setting balls between the stator and the mover, but when the motor is matched with a heavy lens, the mover and the lens form a heavier overall weight, which will cause the ball to hit the inner wall of the guide track where it is located to form a pit, thereby affecting the movement of the lens. Summary of the invention

[0003] The present application provides a driving device, a camera module and an electronic device to solve the technical problem that the overall weight formed by the mover and the lens is heavy, which may cause the ball to hit and form a pit on the inner wall of the guide track where it is located.

[0004] The technical solution of this application is as follows:

[0005] A first aspect of the present application provides a driving device, which includes: a base, a frame and a lens holder;

[0006] The frame can move relative to the base on a first plane, and the frame has a first accommodation space;

[0007] The lens holder is configured to be connected to the lens, and at least a portion of the structure of the lens holder is located in the first accommodation space;

[0008] A guide column is provided between the lens holder and the frame to guide the movement of the lens holder relative to the frame along a first direction, and a first angle is provided between the first direction and the first plane.

[0009] By adopting the above-mentioned scheme, the frame is moved relative to the base on the first plane so that the driving device has an anti-shake function; and the lens frame moves in one direction relative to the frame so that the driving device has an autofocus function. After the guide column is set between the lens frame and the frame, compared with the point contact between the ball and the inner wall of the guide track in the related technology, the present application increases the contact amount between the guide column and the lens frame, and the contact amount between the guide column and the frame, thereby solving the technical problem of the ball hitting the inner wall of the guide track to form a pit in the related technology. In addition, during use, the present application uses the guide column to ensure that the lens frame and the frame can move relative to each other smoothly.

[0010] In some implementations, the guide post is located between the outer side surface of the lens holder and the inner side surface of the frame, and the length direction of the guide post is parallel to the first direction.

[0011] By adopting the above solution, since the lens holder is located in the first accommodating space of the frame, the guide column is clamped between the outer side surface of the lens holder and the inner side surface of the frame, so there is no direct contact between the outer side surface of the lens holder and the inner side surface of the frame, which is conducive to the sliding of the lens holder relative to the frame.

[0012] In some implementations, the outer side surface of the lens frame has a first limiting groove, the inner side surface of the frame has a second limiting groove, and the guide post is located between the first limiting groove and the second limiting groove.

[0013] By adopting the above solution and utilizing the cooperation between the first limiting groove and the second limiting groove, the specific installation position of the guide column between the frame and the lens holder is limited, so as to guide the movement of the lens holder relative to the frame along the first direction.

[0014] In some implementations, there are multiple guide posts, and the multiple guide posts are distributed along the outer side surface of the lens holder.

[0015] By adopting the above scheme, multiple guide columns are distributed circumferentially around the outer side surface of the lens holder to ensure the stability of the movement of the lens holder relative to the frame; in addition, when in use, it is possible to avoid the lens mounted on the lens holder from drooping, that is, to avoid the angle between the optical axis of the lens and the first plane from changing.

[0016] In some implementations, the driving device is in a rectangular parallelepiped shape, and there are two guide posts, which are located on diagonals of the driving device.

[0017] By adopting the above solution, after the guide column is set on the diagonal line, the stability of the movement of the lens holder relative to the frame is further guaranteed; in addition, when in use, it can avoid the situation where the lens installed on the lens holder droops, that is, avoid the angle between the optical axis of the lens and the first plane from changing.

[0018] In some implementations, the guide post is fixedly connected to the lens frame, and there is line contact or surface contact between the guide post and the frame;

[0019] Or, the guide post is fixedly connected to the frame, and there is line contact or surface contact between the guide post and the lens holder;

[0020] Alternatively, there is line contact or surface contact between the guide post and the frame, and there is line contact or surface contact between the guide post and the lens holder.

[0021] By adopting the above scheme, the contact between the guide column and the lens frame is made into line contact or surface contact, or / and, the contact between the guide column and the frame is made into line contact or surface contact, thus ensuring the contact amount between the guide column and the lens frame, or / and the contact amount between the guide column and the frame, thereby solving the technical problem in the related art that the ball hits the inner wall of the guide track to form a pit to a certain extent.

[0022] In some implementations, a first ball bearing is disposed between the frame and the base, wherein the frame has a first side surface and a second side surface opposite to each other, the direction from the first side surface to the second side surface is parallel to the first direction, the first side surface of the frame has a third limiting groove, the first ball bearing is located in the third limiting groove, and the first side surface of the frame is separated from the base by the first ball bearing.

[0023] By adopting the above scheme, the first ball is used to achieve the first ball friction, so as to facilitate the relative movement between the frame and the base; and the first ball is located in the third limiting groove to limit the installation of the first ball and prevent the first ball from escaping from between the frame and the base; in addition, since the base and the first side surface of the frame are separated by the first ball, the frame can move relative to the base in the first plane and in any direction parallel to the first plane.

[0024] In some implementations, a first gasket is fixed to the bottom of the third limiting groove, a second gasket is fixed to the base, and the first ball is in contact with the first gasket and the second gasket respectively.

[0025] By adopting the above solution, the first gasket and the second gasket can reduce the wear of the first ball on the third limiting groove and the base, thereby increasing the service life of the driving device.

[0026] In some implementations, at least one first elastic member is disposed between the outer circumference of the frame and the base, and the first elastic member is used to suppress rotational movement of the frame relative to the base around a first axis, and the first axis is perpendicular to the first plane.

[0027] By adopting the above scheme, since the frame can move relative to the base on the first plane, the frame may rotate around an axis relative to the base, and the rotation is not conducive to controlling the normal movement of the base in the first plane. Therefore, when the base tends to rotate, the first elastic member provides a torque opposite to the base's spin, so that the base can be returned to its original position through the first elastic member when the base spins.

[0028] In some implementations, the first elastic member includes a first connecting piece, a bent portion, and a second connecting piece; the first connecting piece is fixedly connected to one end of the bent portion, the other end of the bent portion is fixedly connected to the second connecting piece, the first connecting piece is fixedly connected to the base, and the second connecting piece is fixedly connected to the second side of the frame.

[0029] By adopting the above solution, the first connecting piece and the second connecting piece are used to be fixedly connected to the base and the frame respectively, and the bent portion can provide the required torque.

[0030] In some implementations, in the first direction, there is a height difference between the first connecting plate and the second connecting plate, and the distance between the first connecting plate and the first side surface of the frame is smaller than the distance between the second connecting plate and the first side surface of the frame; the second side surface of the frame has a groove, and there is a spacing between the bottom of the groove and the bent portion.

[0031] By adopting the above scheme, since there is a height difference between the first connecting piece and the second connecting piece, a groove is set to avoid contact between the frame and the bent portion; and the distance between the first connecting piece and the first side surface of the frame is smaller than the distance between the second connecting piece and the first side surface of the frame, so that the first elastic member can also provide a force toward the first side surface of the frame to ensure that the bottom of the third limiting groove of the frame, the first ball and the base are able to contact each other.

[0032] In some implementations, there are multiple first elastic members, and the multiple first elastic members are distributed along the outer circumference of the frame.

[0033] By adopting the above solution, a plurality of first elastic members are used to provide a large moment to suppress the rotation of the frame relative to the base.

[0034] In some implementations, the drive device further includes a first drive assembly and a second drive assembly;

[0035] The first driving assembly is used to drive the lens holder to move along a first direction relative to the frame;

[0036] The second driving assembly is used to drive the frame to move relative to the base on a first plane.

[0037] By adopting the above solution, the first driving component drives the lens frame to move, so as to realize the automatic focusing of the driving device; and the second driving component drives the frame to move, so as to realize the anti-shake function of the driving device.

[0038] In some implementations, the first driving assembly includes a first coil mounted on the frame, and a magnetic attraction assembly fixed on the lens frame, the first coil cooperates with the magnetic attraction assembly; the magnetic attraction assembly includes a first magnet and a second magnet, and the first magnet and the second magnet are distributed along a first direction;

[0039] The first coil and the magnetic attraction component are distributed along a direction perpendicular to the first direction.

[0040] By adopting the above solution, after the first coil is energized, the first coil cooperates with the magnetic attraction assembly to generate a Lorentz force that drives the lens holder to move relative to the frame along the first direction.

[0041] In some implementations, the first drive assembly further includes a first magnetically conductive yoke and a first circuit board;

[0042] The outer side surface of the lens holder has a third side and a fourth side opposite to each other, the first magnetic yoke is fixed to the third side of the outer side surface of the lens holder, the first magnetic yoke is in contact with the magnetic attraction component, and the first magnetic yoke is located on a side of the magnetic attraction component facing away from the first coil;

[0043] The first circuit board is fixed on the frame, the first coil is electrically connected to the first circuit board, and the first coil is located on a side of the first circuit board facing the magnetic attraction component.

[0044] By adopting the above solution, the first magnetically conductive yoke is used to increase the magnetic field strength.

[0045] In some implementations, the second drive assembly includes a first subassembly and a second subassembly, the first subassembly being used to drive the frame to move in the second direction relative to the base, and the second subassembly being used to drive the frame to move in the third direction relative to the base;

[0046] There is a second angle between the second direction and the third direction, and the second direction and the third direction are respectively parallel to the first plane.

[0047] By adopting the above solution, the movement of the frame relative to the base in two directions within the first plane is respectively achieved through the first subassembly and the second subassembly.

[0048] In some implementations, the first subassembly includes a second coil mounted on the base, and a third magnet fixed to the frame; the second coil cooperates with the third magnet;

[0049] The second subassembly includes a third coil mounted on the base, and a fourth magnet fixed on the frame; the third coil cooperates with the fourth magnet;

[0050] The second coil and the third coil are respectively located on two adjacent sides of the base, and the third magnet and the fourth magnet are respectively located on two adjacent sides of the frame;

[0051] The second driving component also includes a second circuit board, and the second coil and the third coil are electrically connected to the second circuit board respectively.

[0052] By adopting the above scheme, after the second coil is energized, the second coil cooperates with the third magnet to generate a Lorentz force that drives the frame to move in the second direction relative to the base within the first plane; after the third coil is energized, the third coil cooperates with the fourth magnet to generate a Lorentz force that drives the frame to move in the third direction relative to the base within the first plane.

[0053] In some implementations, the outer side of the lens holder has opposing third and fourth sides;

[0054] The first driving assembly also includes a second magnetically conductive yoke and a third magnetically conductive yoke;

[0055] The second magnetic yoke is fixed on the frame, and the second magnetic yoke cooperates with the magnetic attraction component;

[0056] The third magnetic yoke is fixed to the fourth side of the outer side surface of the lens frame, and the third magnetic yoke cooperates with the fourth magnet;

[0057] The second magnetically conductive yoke and the third magnetically conductive yoke are spaced apart from each other in the second direction, and the second magnetically conductive yoke and the third magnetically conductive yoke are spaced apart from each other in the third direction.

[0058] By adopting the above solution, the second magnetic yoke cooperates with the magnetic attraction component, and the third magnetic yoke cooperates with the fourth magnet, so as to improve the stability of the lens holder when it moves with the frame.

[0059] In some implementations, the first subassembly further includes a fourth magnetically conductive yoke and a fifth magnetically conductive yoke;

[0060] The fourth magnetic yoke is fixed on the frame, and the fourth magnetic yoke is located on a side of the third magnet facing away from the second coil;

[0061] The fifth magnetic yoke is fixed on the base, and the fifth magnetic yoke corresponds to the third magnet.

[0062] By adopting the above scheme, the fourth magnetic yoke is used to increase the magnetic field strength of the third magnet, and the fifth magnetic yoke is used to cooperate with the third magnet so that the third magnet attracts the fifth magnetic yoke, thereby ensuring that the frame and the base can cooperate through the first ball in the first direction.

[0063] In some implementations, the second subassembly further includes a sixth magnetically conductive yoke and a seventh magnetically conductive yoke;

[0064] The sixth magnetic yoke is on the fixing frame, and the sixth magnetic yoke is located on a side of the fourth magnet facing away from the third coil;

[0065] The seventh magnetic yoke is fixed on the base, and the seventh magnetic yoke corresponds to the fourth magnet.

[0066] By adopting the above scheme, the sixth magnetic yoke is used to increase the magnetic field strength of the fourth magnet, and the seventh magnetic yoke is used to cooperate with the fourth magnet so that the fourth magnet attracts the seventh magnetic yoke, thereby ensuring that the frame and the base can cooperate through the first ball in the first direction.

[0067] In some implementations, the driving device further includes a housing, which is fixedly connected to the base, and the housing and the base cooperate to form an installation cavity, in which the frame and the lens holder are located.

[0068] By adopting the above solution, the frame and the lens holder are protected by the outer shell.

[0069] In some implementations, the base includes a bottom plate and a plurality of limiting plates fixed on the bottom plate; the plurality of limiting plates cooperate with the bottom plate to form a limiting space, and the frame is disposed in the limiting space.

[0070] By adopting the above solution, the limiting space is used to limit the range of movement of the frame within the first plane.

[0071] In some implementations, the first direction is perpendicular to the first plane, and the first direction is parallel to the optical axis direction of the lens.

[0072] By adopting the above solution, the focusing and anti-shake requirements in actual use can be met.

[0073] A second aspect of the present application provides a camera module, which includes a lens and any driving device, wherein the lens is fixedly connected to a lens frame.

[0074] By adopting the above solution, after the driving device is applied to the camera module, the driving device drives the lens to move to achieve the focusing and anti-shake functions of the lens, and can solve the technical problem in the related art that the ball hits the inner wall of the guide track to form a pit.

[0075] A third aspect of the present application provides an electronic device, which includes a housing and a camera module, wherein the camera module is mounted on the housing.

[0076] By adopting the above solution, after the camera module is applied to an electronic device, the technical problem in the related art that the ball hits the inner wall of the guide track to form a pit can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] Figure 1is a front view of an electronic device provided by an embodiment of the present application;

[0078] Figure 2 is a rear view of the electronic device provided by an embodiment of the present application;

[0079] Figure 3 is a structural schematic diagram of a camera module provided in an embodiment of the present application;

[0080] Figure 4 is a schematic diagram of the structure of a driving device provided in an embodiment of the present application;

[0081] Figure 5 is an exploded schematic diagram of a driving device provided in an embodiment of the present application;

[0082] Figure 6 yes Figure 4 A top view of the drive device in FIG.

[0083] Figure 7 is along Figure 6 Sectional view along line AA;

[0084] Figure 8 is along Figure 6 Sectional view along the midline BB;

[0085] Fig. 9 is along Figure 6 Sectional view of the mid-CC line;

[0086] Fig.10 is a schematic diagram of the structure of a driving device without a housing installed in an embodiment of the present application;

[0087] Fig.11 yes Fig.10 A top view of the drive device without the housing installed;

[0088] Fig.12 yes Fig.11 A partial enlarged schematic diagram of point D in the middle;

[0089] Fig.13 yes Fig.11 A partial enlarged schematic diagram of point E in the middle;

[0090] Fig.14 is a schematic structural diagram of a lens holder in an embodiment of the present application;

[0091] Fig.15 It is a structural diagram of the framework in the embodiment of the present application;

[0092] Fig.16 yes Fig.15 A top view of the frame in FIG.

[0093] Fig.17 yes Fig.15 A structural diagram of another perspective of the framework in FIG.

[0094] Fig.18 It is a schematic diagram of the structure of the base in the embodiment of the present application.

[0095] The meanings of the figures are as follows:

[0096] 101, housing; 102, display screen; 103, frame; 104, back cover;

[0097] 200, camera module; 201, driving device; 202, lens; 203, housing; 204, lens holder; 205, base; 206, mounting hole; 207, frame; 208, first accommodating space; 209, guide column; 210, first coil; 211, first circuit board; 212, first magnet; 213, second magnet; 214, first mounting groove; 215, first magnetic yoke; 216, second circuit board; 217, second coil; 218, third coil; 219, second magnetic yoke; 220, third magnetic yoke; 221, fourth magnetic yoke; 222, fifth magnetic yoke; 223, sixth magnetic yoke; 224, seventh magnetic yoke; 225, second mounting groove; 226, third side; 227, fourth side; 228, first conductive pin; 229, second conductive pin; 230, a second magnetic induction element; 231, a third magnetic induction element; 232, a third mounting groove; 233, a first ball; 234, a first gasket; 235, a second gasket; 236, a first elastic member; 237, a bottom plate; 238, a limiting plate; 239, a first connecting piece; 240, a curved portion; 241, a straight segment; 242, a groove; 243, a first limiting groove; 244, a second limiting groove; 245, a third limiting groove; 246, a fourth limiting groove; 247, a first sub-wall surface; 248, a second sub-wall surface; 249, a third sub-wall surface; 250, a first rectangular plane; 251, a second rectangular plane; 252, a fourth mounting groove; 253, a sub-edge portion; 254, a through hole; 255, a third magnet; 256, a fourth magnet; 257, a second connecting piece; 258, a first side surface; 259, a second side surface. DETAILED DESCRIPTION

[0098] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0099] It should be understood that the "multiple" mentioned in this application refers to two or more. In the description of this application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in order to facilitate the clear description of the technical solution of this application, the words "first" and "second" are used to distinguish between the same items or similar items with basically the same functions and effects. Those skilled in the art can understand that the words "first" and "second" do not limit the quantity and execution order, and the words "first" and "second" do not limit them to be different.

[0100] The electronic device, the lens 202 assembly and the driving device 201 provided in the embodiment of the present application are explained in detail below.

[0101] Figure 1 is a front view of an electronic device provided in an embodiment of the present application, Figure 2 is a rear view of the electronic device provided in the embodiment of the present application, combined with Figure 1 and Figure 2 As shown, in one or more embodiments, the electronic device in the embodiment of the present application includes a housing 101, a display screen 102 and a camera module 200, and the camera module 200 is installed on the housing 101. The electronic device can be a mobile phone, a tablet computer, a laptop, a wearable device, or other device with a photo or video function, wherein the mobile phone can be a straight phone or a foldable phone. Exemplarily, the electronic device in the embodiment of the present application is described by taking a mobile phone as an example.

[0102] See also Figure 2 As shown, in some embodiments, the housing 101 includes a frame 103 and a back cover 104. The frame 103 and the back cover 104 may be an integrally formed structure, or may be assembled to form an integral structure. The display screen 102 and the back cover 104 are respectively connected to the frame 103. In addition to being installed on the back of an electronic device and used as a rear camera, the camera module 200 may also be used as a front camera of the electronic device, which is not specifically limited here.

[0103] In some embodiments, the electronic device further includes a processor (not shown in the figure), and the processor is housed in an inner cavity surrounded by the display screen 102, the back cover 104, and the frame 103. The processor is communicatively connected to the camera module 200, and the processor is used to obtain image data from the camera module 200, process the image data, and then transmit the processed signal to the display screen 102. Among them, the communication connection between the camera module 200 and the processor can include data transmission through electrical connection methods such as wiring, and data transmission can also be achieved through wireless communication and other methods. It is understandable that the camera module 200 and the processor can also be communicated through other methods that can achieve data transmission.

[0104] Figure 3 is a schematic diagram of the structure of the camera module 200 provided in the embodiment of the present application, see Figure 3 As shown, in some embodiments, the camera module 200 includes a driving device 201, a lens 202 and a photosensitive element (not shown), and the lens 202 is installed on the driving device 201; the driving device 201 can also be called a motor, and the motor can be a voice coil motor; the photosensitive element is located on the image side of the lens 202, and the light reflected by the photographed scene is projected onto the photosensitive surface of the photosensitive element through the lens 202 to generate an optical image, and the photosensitive element converts the optical image into an electrical signal, i.e., an analog image signal, and transmits it to the processor. Among them, the photosensitive element (also called an image sensor) is a semiconductor chip, and the surface contains hundreds of thousands to millions of photodiodes, which will generate electric charge when exposed to light. The photosensitive element can be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). CCD is made of a high-sensitivity semiconductor material that can convert light into electric charge. The charge coupled device is composed of many photosensitive units, usually in units of millions of pixels. When the surface of the photosensitive element is irradiated by light, each photosensitive unit will reflect the charge on the component, and the signals generated by all the photosensitive units are added together to form a complete picture. The driving device 201 in the present application can be applied to a camera module 200 with a large image plane, and the size of the photosensitive element can be one inch; in addition, the driving device 201 in the embodiment of the present application can be applied to a lens 202 with a relatively heavy weight.

[0105] For ease of description, Figure 3As shown, the height direction of the camera module 200 can be defined as the ZZ direction, the length direction of the camera module 200 is defined as the XX direction, and the width direction of the camera module 200 can be defined as the YY direction. The XX direction, the YY direction, and the ZZ direction are mutually perpendicular to form a rectangular coordinate system. The optical axis direction of the lens 202 is parallel to the height direction of the camera module 200.

[0106] Figure 4 201 is a schematic diagram of the structure of the driving device 201 provided in the embodiment of the present application; Figure 4 As shown, in some embodiments, the width direction, length direction and height direction of the driving device correspond to the width direction of the camera module 200, the length direction of the camera module 200 and the height direction of the camera module 200, respectively. The driving device 201 is roughly in the shape of a rectangular parallelepiped, the length and width of the driving device 201 can be equal, and the height of the driving device 201 is less than the length of the driving device 201. The driving device 201 includes a housing 203, a lens frame 204 and a base 205, the housing 203 is fixedly connected to the base 205, and the connection between the housing 203 and the base 205 can be bonding, snap-fit ​​connection or screw connection. The housing 203 and the base 205 cooperate to form an installation cavity, and the lens frame 204 is located in the installation cavity, so that the housing 203 can protect the frame lens frame 204. The housing 203 is in a rectangular parallelepiped shape, so that the entire driving device 201 is roughly in a rectangular parallelepiped shape. The housing 203 and the lens holder 204 are both provided with mounting holes 206. The mounting holes 206 on the housing 203 are used to allow the lens 202 to pass through, so as to facilitate the fixed connection between the lens 202 and the lens holder 204, and the lens 202 can move relative to the housing 203. The mounting holes 206 on the lens holder 204 are used to achieve fixed connection with the lens 202; the lens 202 and the lens holder 204 can be fixedly connected by bonding or detachable connection, and the detachable connection can be a snap connection or a threaded connection. A first pin is also fixed on the base 205. The housing 203 can be made of metal or non-metal; when the housing 203 is made of metal, the housing 203 can be made of non-magnetic metal. Of course, in some cases, stainless steel or iron can also be used.

[0107] Figure 5 2 is an exploded schematic diagram of a driving device 201 provided in an embodiment of the present application; Figure 5As shown, in some embodiments, the driving device 201 further includes a frame 207, which can move relative to the base 205 on the first plane, and the frame 207 has a first accommodation space 208; the lens frame 204 is configured to be connected to the lens 202, and at least part of the structure of the lens frame 204 is located in the first accommodation space 208; there is a guide column 209 between the lens frame 204 and the frame 207 to guide the movement of the lens frame 204 relative to the frame 207 along the first direction, wherein the lens frame 204 can not only move along the first direction relative to the frame 207, but also move in a direction opposite to the first direction, that is, the movement of the lens frame 204 relative to the frame 207 can be a reciprocating movement. There is a first angle between the first direction and the first plane, that is, the first direction and the first plane are not parallel, and illustratively, the first direction and the first plane can be perpendicular, or the angle formed between the two can be an acute angle or an obtuse angle; and the lens frame 204 moves relative to the frame 207 along the first direction, so that the driving device 201 has an autofocus function.

[0108] In the related art, the ball of the ball motor is in point contact with the inner wall of the guide track, and the ball will hit the inner wall of the guide track to form a pit, and there will be a crosstalk problem between the autofocus and optical image stabilization of the ball motor. In addition, the excessive weight of the mover of the ball motor will also cause shaking and abnormal noise. In the embodiment of the present application, after the guide column 209 is set between the lens holder 204 and the frame 207, the contact between the guide column 209 and the lens holder 204 is line contact or surface contact, and the contact between the guide column 209 and the frame 207 is line contact or surface contact, which increases the contact amount between the guide column 209 and the lens holder 204, and the contact amount between the guide column 209 and the frame 207, so that the guide column will not hit a pit between the lens holder 204 and the frame 207; and during use, the present application uses the guide column 209 to ensure that the relative movement between the lens holder 204 and the frame 207 can be smooth. In addition, the lens holder 204 is located in the frame 207, which is conducive to reducing the crosstalk between autofocus and optical image stabilization, reducing the impact of the autofocus function on the optical image stabilization function, and the driving device is less likely to have problems such as shaking and making abnormal noises during use.

[0109] In one embodiment, the first direction is perpendicular to the first plane and parallel to the optical axis of the lens 202 , which can meet the focus and anti-shake requirements in actual use. The optical axis of the lens 202 is perpendicular to the surface of the display screen 102 .

[0110] In some embodiments, the first plane may be a set surface on the base 205, and the frame 207 moves on the surface of the base 205; the height direction of the lens holder 204 and the height direction of the frame 207 are respectively parallel to the height direction of the camera module 200. The height of the lens holder 204 is less than or equal to the height of the first accommodation space 208, so that the lens holder 204 is completely located in the first accommodation space 208 in the height direction of the camera module 200. The height of the lens holder 204 is greater than the height of the first accommodation space 208, so that in the height direction of the camera module 200, part of the lens holder 204 extends out of the first accommodation space 208.

[0111] In some embodiments, the guide column 209 may also be referred to as a slide rail or a slide rod; the side surface of the guide column 209 is a guide surface.

[0112] The relationship between the guide column 209, the lens holder 204 and the frame 207 can be divided into three situations:

[0113] The first case: when the guide post 209 is fixedly connected to the lens frame 204, there is line contact between the guide post 209 and the frame 207. The guide post 209 and the lens frame 204 can be fixed by bonding or gluing, or the guide post 209 and the lens frame 204 are fixed by an integrated molding process. In this way, the line contact between the guide post 209 and the frame 207 can reduce friction on the one hand, and increase the contact amount between the guide post 209 and the frame 207 on the other hand, thereby solving the technical problem in the related art that the ball hits the inner wall of the guide track to form a pit.

[0114] The second situation: when the guide post 209 is fixedly connected to the frame 207, there is line contact between the guide post 209 and the lens frame 204. The guide post 209 and the frame 207 can be fixed by bonding or gluing, or the guide post 209 and the frame 207 are fixed by an integrated molding process. In this way, the line contact between the guide post 209 and the lens frame 204 can reduce friction on the one hand, and increase the contact amount between the guide post 209 and the lens frame 204 on the other hand, thereby solving the technical problem in the related art that the ball hits the inner wall of the guide track to form a pit.

[0115] The third situation: the frame 207 and the lens holder 204 are not fixed to the guide post 209, and there is a line contact between the guide post 209 and the frame 207, and there is a line contact between the guide post 209 and the lens holder 204. Since the line contact is adopted, the friction can be reduced on the one hand, and the technical problem of the ball hitting the inner wall of the guide track to form a pit in the related art can be solved on the other hand. In this case, the opposite ends of the guide post 209 can be respectively abutted against the base 205 and the shell 203, so that the guide post 209 will not produce relative movement with the base 205 and the shell 203 in the first direction.

[0116] It should be noted that in some other possible implementations, there can be surface contact between the guide column 209 and the frame 207, or / and, there can be surface contact between the guide column 209 and the lens holder 204. This can also solve the technical problem in the related art that the ball hits the inner wall of the guide track to form a pit.

[0117] In some embodiments, the cross-section of the guide column 209 may be circular or elliptical, and the cross-section of the guide column 209 is perpendicular to the length direction of the guide column 209; when the cross-section of the guide column 209 is circular, the guide surface is a cylindrical surface.

[0118] Figure 6 yes Figure 4 A top view of the drive device 201 in FIG. Figure 6 As shown, the length and width of the housing 203 are substantially equal, the housing 203 is substantially square, and the mounting hole 206 on the housing 203 is a circular hole.

[0119] Figure 7 is along Figure 6 Sectional view of line AA, see Figure 7As shown, the frame 207 is also located in the installation cavity formed by the shell 203 and the base 205, and the height of the lens frame 204 is less than the height of the frame 207; the driving device 201 also includes a first driving component, which is used to drive the lens frame 204 to move along the first direction relative to the frame 207, thereby realizing automatic focusing. The first driving component includes a first coil 210, a first circuit board 211 and a magnetic attraction component; the first coil 210 cooperates with the magnetic attraction component, and when the first coil 210 is energized, the first coil 210 is located in the magnetic field of the magnetic attraction component, thereby generating a force that drives the lens frame 204 to move along the first direction relative to the frame 207. The magnetic attraction component is fixed on the lens frame 204, and the first coil 210 and the first circuit board 211 are fixed on the frame 207. The first coil 210 is electrically connected to the first circuit board 211, and the first coil 210 is fixed on the first circuit board 211; the plane of the first coil 210 is parallel to the first direction. The first circuit board 211 can be a flexible circuit board or a hard circuit board, and a first magnetic induction element (not shown) is integrated on the first circuit board 211; the first magnetic induction element can be a Hall induction device; the first induction element is used to sense the position information of the magnetic suction component, and transmit feedback information through the first circuit board 211 to control the movement of the lens holder 204 relative to the frame 207 in the first direction, so as to achieve automatic focusing; the first coil 210 and the first magnetic induction element are located on the side of the first circuit board 211 facing the magnetic suction component; the first coil 210 and the first magnetic induction element are located between the magnetic suction component and the first circuit board 211. The first circuit board 211 is electrically connected to the processor. The first coil 210 can be arranged on the first circuit board 211 by SMT (Surface Mounting Technology) process; and the first circuit board 211 can be integrally formed with the frame 207 by injection molding process. It should be noted that in some other possible implementations, the magnetic suction component can also be fixed on the frame 207, and the first coil 210 and the first circuit board 211 can be fixed on the lens holder 204.

[0120] Please continue to see Figure 7As shown, in some embodiments, one side of the outer side of the lens frame 204 has a first mounting groove 214, the magnetic attraction assembly is fixed in the first mounting groove 214, the magnetic attraction assembly includes a first magnet 212 and a second magnet 213, the first magnet 212 and the second magnet 213 are distributed along the height direction of the lens frame 204, and the height direction of the lens frame 204 is parallel to the first direction; the first coil 210 and the magnetic attraction assembly are distributed along a direction perpendicular to the height direction of the lens frame 204. In the height direction of the driving device 201, the first magnet 212 is close to the mounting hole 206 of the housing 203, and the second magnet 213 is far away from the mounting hole 206 of the housing 203. Exemplarily, the N pole of the first magnet 212 faces the first coil 210, while the S pole of the first magnet 212 faces away from the first coil 210, and the S pole of the second magnet 213 faces the first coil 210, while the N pole of the second magnet 213 faces away from the first coil 210, so that the S pole and N pole of the first magnet 212 are exactly opposite to the S pole and N pole of the second magnet 213, thereby realizing reciprocating movement of the lens holder 204 relative to the frame 207 in the height direction of the driving device 201.

[0121] It should be noted that, in some other possible implementations, the N pole of the first magnet 212 can be facing away from the first coil 210, while the S pole of the first magnet 212 is facing the first coil 210, and the S pole of the second magnet 213 can be facing away from the first coil 210, while the N pole of the second magnet 213 is facing the first coil 210. In this way, the lens holder 204 can also achieve reciprocating movement relative to the frame 207 in the height direction of the driving device 201.

[0122] See also Figure 7 As shown, in some embodiments, the first driving component further includes a first magnetic yoke 215, the first magnetic yoke 215 is located on the side of the magnetic attraction component facing away from the first coil 210, the first magnetic yoke 215 is located at the bottom of the first mounting groove 214, and the first magnetic yoke 215 is in contact with the magnetic attraction component, so that the magnetic field strength of the magnetic attraction component can be enhanced by the first magnetic yoke 215. In the embodiment of the present application, the number of the first driving component can be one, so that a single first driving component is used to reduce costs.

[0123] In some embodiments, the driving device 201 further includes a second driving component, which is used to drive the frame 207 to move relative to the base 205 on the first plane, so that the second driving component is used to drive the frame 207 to move, so as to realize the anti-shake function of the driving device 201. The second driving component includes a first subassembly and a second subassembly, and the first subassembly is used to drive the frame 207 to move relative to the base 205 in the second direction, the second direction is perpendicular to the first direction, and the second direction is parallel to the first plane. The second subassembly is used to drive the frame 207 to move relative to the base 205 in the third direction; there is a second angle between the second direction and the third direction, the third direction is parallel to the first plane, and the third direction is perpendicular to the first direction. Exemplarily, the second angle between the second direction and the third direction refers to the situation that the second direction and the third direction are not parallel, the second direction and the third direction can be perpendicular, or the angle between the two directions can be an acute angle or an obtuse angle. In this way, the first subassembly and the second subassembly are used to respectively realize the movement of the frame 207 relative to the base 205 in two directions in the first plane, so as to facilitate the driving device 201 to have an anti-shake function. In one embodiment, the first direction is perpendicular to the third direction, the second direction is parallel to the length direction of the driving device 201, and the third direction is parallel to the width direction of the driving device 201, that is, the second direction is perpendicular to the third direction.

[0124] It should be noted that the first subassembly can also drive the frame 207 to move relative to the base 205 in a direction opposite to the second direction, that is, the first subassembly can drive the frame 207 to reciprocate in a direction parallel to the second direction relative to the base 205. The second subassembly can also drive the frame 207 to move relative to the base 205 in a direction opposite to the third direction, that is, the second subassembly can drive the frame 207 to reciprocate in a direction parallel to the third direction relative to the base 205.

[0125] See also Figure 7As shown, the second driving assembly also includes a second circuit board 216, and the second subassembly includes a third coil 218, a fourth magnet 256 and a sixth magnetic yoke 223; the third coil 218 cooperates with the fourth magnet 256. The second circuit board 216 is fixed on the base 205, the third coil 218 is fixed on the base 205, and the fourth magnet 256 and the sixth magnetic yoke 223 are fixed on the frame 207. The second circuit board 216 can be a flexible circuit board or a hard circuit board, and the second circuit board 216 is integrated with a third magnetic sensing element 231; the third magnetic sensing element 231 can be a Hall sensing device; the third sensing element is used to sense the position information of the fourth magnet 256, and transmit feedback information through the second circuit board 216 to control the movement of the frame 207 relative to the base 205 in the third direction. The third coil 218 is installed on the second circuit board 216, and the third coil 218 and the third sensing element are located on the side of the second circuit board 216 facing the fourth magnet 256. The outer side surface of the frame 207 has a second mounting groove 225, the sixth magnetic yoke 223 is installed at the bottom of the second mounting groove 225, the fourth magnet 256 is fixed in the second mounting groove 225, and the fourth magnet 256 is located between the sixth magnetic yoke 223 and the third coil 218. In one embodiment, the outer side surface of the lens holder 204 has a third side 226 and a fourth side 227 opposite to each other, and the first mounting groove 214 is located at the third side 226, so that the first magnetic yoke 215 and the magnetic suction assembly are fixed to the third side 226 of the outer side surface of the lens holder 204; and the second subassembly is located on the side where the fourth side 227 of the lens holder 204 is located. The second circuit board 216 can realize power supply and communication through the four second conductive pins 229 provided thereon (see Figure 4 As shown); the second circuit board 216 is electrically connected to the processor.

[0126] Figure 8 is along Figure 6 Sectional view of the midline BB; see Figure 8As shown, in some embodiments, the first subassembly includes a second coil 217, a third magnet 255 and a fourth magnetic yoke 221; the second coil 217 cooperates with the third magnet 255; the second coil 217 is fixed on the base 205, and the third magnet 255 and the fourth magnetic yoke 221 are fixed on the frame 207; the second circuit board 216 is also integrated with a second magnetic sensing element 230; the second magnetic sensing element 230 can be a Hall sensing device; the second sensing element is used to sense the position information of the third magnet 255, and transmit feedback information through the second circuit board 216 to control the movement of the frame 207 relative to the base 205 in the second direction, so that the driving device 201 has an anti-shake function through the cooperation of the first subassembly and the second subassembly. The second coil 217 and the second sensing element are located on the side of the circuit board facing the third magnet 255. The outer side of the frame 207 also has a third mounting groove 232, the fourth magnetic yoke 221 is located at the bottom of the third mounting groove 232, and the third magnet 255 is fixed in the third mounting groove 232; the third magnet 255 is located between the fourth magnetic yoke 221 and the second coil 217. In one embodiment, see Figure 5 As shown, the second coil 217 and the third coil 218 are respectively located on two adjacent sides of the base 205, and the third magnet 255 and the fourth magnet 256 are respectively located on two adjacent sides of the frame 207. The second coil 217 and the third coil 218 can be arranged on the second circuit board 216 by using the SMT (Surface Mounting Technology) process; and the second circuit board 216 can be integrally formed with the base 205 by using the injection molding process. The embodiment of the present application can use one first subassembly and one second subassembly to realize the movement of the frame 207 in two directions.

[0127] Fig. 9 is along Figure 6 Sectional view of the CC line; see Fig. 9 As shown, in some embodiments, in the height direction of the driving device 201, a first ball 233 is arranged between the frame 207 and the base 205. The first ball 233 can be a spherical structure, so that the first ball 233 is a universal structure and has a supporting function. When the frame 207 moves on the first plane relative to the base 205, the first ball 233 can reduce friction and improve the sensitivity of the frame 207 to the base 205. The number of the first ball 233 can be multiple. The frame 207 has a first side surface 258 and a second side surface 259 that are opposite; the direction from the first side surface 258 to the second side surface 259 is a first direction, and the first direction can be a direction from the image side to the object side of the lens. The first direction is opposite to the light input direction of the lens. Exemplarily, as Fig. 9As shown, the first side surface 258 of the frame 207 has a third limiting groove 245, the first ball 233 is located in the third limiting groove 245, the first side surface 258 of the frame 207 is separated from the base 205 by the first ball 233, and the height direction of the frame 207 is parallel to the first direction; in this way, the frame 207 can move relative to the base 205 in the first plane and in any direction parallel to the first plane, and the first ball 233 is located in the third limiting groove 245 to limit the installation position of the first ball 233 and prevent the first ball 233 from coming out from between the frame 207 and the base 205. In one embodiment, the third limiting groove 245 can be in the form of a blind hole.

[0128] Please continue to see Fig. 9 As shown, the bottom of the third limiting groove 245 is fixed with a first gasket 234, and the base 205 is provided with a fourth limiting groove 246. The diameter of the third limiting groove 245 and the diameter of the fourth limiting groove 246 can be larger than the diameter of the first ball 233, so that the first ball 233 will not be stuck by the third limiting groove 245 or the fourth limiting groove 246. On the first plane, the first ball 233 can swing freely in the third limiting groove 245 and the fourth limiting groove 246, so that the first ball 233 has a certain space for free rotation. At least part of the first ball 233 is located in the fourth limiting groove 246, so that the third limiting groove 245 cooperates with the fourth limiting groove 246 to control the range of movement of the frame 207 relative to the base 205 on the first plane. The first plane can be the bottom of the fourth limiting groove 246 in the form of a plane. The second gasket 235 is fixed in the fourth limiting groove 246, and the thickness of the second gasket 235 is less than the groove depth of the fourth limiting groove 246, so that after the second gasket 235 is installed, the first ball 233 can still be located in the fourth limiting groove 246; the material of the first gasket 234 and the second gasket 235 can be metal, and the metal can be stainless steel, aluminum or copper. In this way, the first gasket 234 and the second gasket 235 can reduce the wear of the first ball 233 on the third limiting groove 245 and the fourth limiting groove 246 of the base 205, thereby improving the service life of the driving device 201. The number of the fourth limiting grooves 246 and the number of the third limiting grooves 245 can be equal to the number of the first balls 233.

[0129] Fig.10 201 is a schematic diagram of the structure of the drive device 201 without the housing 203 installed in the embodiment of the present application; Fig.10As shown, in some embodiments, the driving device 201 is also roughly in the shape of a cuboid when the housing 203 is not installed. The base 205 includes a bottom plate 237 and a plurality of limit plates 238 fixed to the bottom plate 237; the plurality of limit plates 238 cooperate with the bottom plate 237 to form a limit space, and the frame 207 is arranged in the limit space. In this way, the limit space is used to limit the range of movement of the frame 207 in the first plane. For example, Fig.10 As shown, the limiting plate 238 is generally L-shaped. A first elastic member 236 is provided between the frame 207 and the base 205. The first elastic member 236 is used to suppress the frame 207 from spinning relative to the base 205 around a first axis. The first axis is parallel to the first direction. The first axis may be a virtual axis passing through the center of gravity of the base 205. Since the frame 207 can move relative to the base 205 on the first plane, the frame 207 may rotate relative to the base 205 around an axis. The rotation is not conducive to controlling the normal movement of the base 205 in the first plane. Therefore, when the base 205 has a tendency to rotate, the first elastic member 236 provides a torque opposite to the spin of the base 205, so that the base 205 is returned to its original position through the first elastic member 236 when the base 205 spins.

[0130] See also Fig.10As shown, in some embodiments, the first elastic member 236 includes a first connecting piece 239, a curved portion 240 and a second connecting piece 257; the first connecting piece 239 is fixedly connected to one end of the curved portion 240, and the other end of the curved portion 240 is fixedly connected to the second connecting piece 257, and the first connecting piece 239 is fixedly connected to the base 205. For example, the first connecting piece 239 is fixed to the limiting plate 238. The second connecting piece 257 is fixedly connected to the second side surface 259 of the frame 207, so that after the first connecting piece 239 and the second connecting piece 257 are fixedly connected to the base 205 and the frame 207 respectively, the required torque can be provided through the curved portion 240. In the height direction of the frame 207, there is a height difference between the first connecting piece 239 and the second connecting piece 257, and the distance between the first connecting piece 239 and the first side 258 of the frame 207 is smaller than the distance between the second connecting piece 257 and the first side 258 of the frame 207; the frame 207 also has a groove 242, and there is a spacing between the bottom of the groove 242 and the bent portion 240 in the first direction to avoid contact between the bottom of the groove 242 of the frame 207 and the bent portion 240, so that the bent portion 240 is suspended in the air, which is beneficial for the bent portion 240 to provide the required elastic force. Since there is a height difference between the first connecting piece 239 and the second connecting piece 257, and the distance between the first connecting piece 239 and the first side surface 258 of the frame 207 is smaller than the distance between the second connecting piece 257 and the first side surface 258 of the frame 207, the first elastic member 236 provides a force toward the first side surface of the frame 207 under the action of the bending portion 240, that is, the direction of the force is toward the bottom plate 237 of the base 205, thereby ensuring that the bottom of the third limiting groove 245 of the frame 207, the first ball 233 and the base 205 are able to contact each other.

[0131] Please continue to see Fig.10 As shown, in some embodiments, the number of guide posts 209 may be multiple, and the multiple guide posts 209 are distributed along the circumference of the outer side surface of the lens holder 204; illustratively, the number of guide posts 209 is two; since the driving device 201 is roughly in the shape of a cuboid, the two guide posts 209 may be located on the diagonal of the polygon (which may be a square or a rectangle) formed by the length and width of the driving device 201. It should be noted that the guide post 209 is located on the diagonal, and the center of the cross section of the guide post 209 may be on the diagonal, or there may be a set distance between the center of the cross section of the guide post 209 and the diagonal, and the ratio of the set distance to the diameter of the cross section of the guide post 209 may be 0.1 to 2, and the specific ratio may be 0.1, 0.2, 0.5, 0.7, 1 or 2, etc.

[0132] See also Fig.10As shown, in some embodiments, the guide post 209 is located between the outer side surface of the lens holder 204 and the inner side surface of the frame 207, and the length direction of the guide post 209 is parallel to the first direction; because the lens holder 204 is located in the first accommodating space 208 of the frame 207, the guide post 209 is clamped between the outer side surface of the lens holder 204 and the inner side surface of the frame 207, so that the outer side surface of the lens holder 204 and the inner side surface of the frame 207 do not directly contact each other, which is conducive to the sliding of the lens holder 204 relative to the frame 207. In one embodiment, the guide post 209 is in direct contact with the outer side surface of the lens holder 204, and the guide post 209 is also in direct contact with the inner side surface of the frame 207, so that the embodiment of the present application eliminates the ball bearing that will hit the inner wall of the guide track in the related art, and the present application adopts the guide post 209 to achieve the relative sliding guidance between the lens holder 204 and the frame 207.

[0133] Fig.11 yes Fig.10 A top view of the drive device 201 without the housing 203 installed; see Fig.11 As shown, there are multiple first elastic members 236, and multiple first elastic members 236 are distributed along the outer circumference of the frame 207, so that multiple first elastic members 236 are used to provide a larger torque to suppress the spin of the frame 207 relative to the base 205. Exemplarily, there are four first elastic members 236, and the four first elastic members 236 are respectively located at different corners of the polygon (which can be a square or a rectangle) surrounded by the length and width of the driving device 201. The material of the first elastic member 236 is metal, and the material of the four first elastic members 236 can be metal, and the metal can be copper or stainless steel, etc.; the four first elastic members 236 are respectively electrically connected to the first circuit board 211, and the four first conductive pins 228 fixed on the base 205 are respectively electrically connected to the four first elastic members 236, so that the four first conductive pins 228 are used to supply power to the first circuit board 211 and realize communication.

[0134] It should be noted that in some other possible implementations, the first elastic member 236 may also be made of other non-metallic materials. When non-metallic materials are used, the power supply and communication of the first circuit board 211 may adopt other routing directions to be electrically connected to the first conductive pin 228.

[0135] Fig.12 yes Fig.11 The local enlarged schematic diagram of D in the middle; see Fig.12As shown, the bending portion 240 includes a plurality of straight line segments 241 connected in sequence, and the angle between two adjacent straight line segments 241 is a right angle. The straight line segment 241 connected to the first connecting piece 239 and the straight line segment 241 connected to the second connecting piece 257 are arranged perpendicular to each other, so that the bending portion 240 can provide the required torque.

[0136] Please continue to see Fig.12 As shown, in some embodiments, the outer side surface of the lens holder 204 has a first limiting groove 243, and the inner side surface of the frame 207 has a second limiting groove 244. The first limiting groove 243 and the second limiting groove 244 cooperate to form a guide slot for accommodating the guide column 209. In this way, the first limiting groove 243 and the second limiting groove 244 cooperate to limit the installation position of the guide column 209. The number of the guide slots is equal to the number of the guide columns 209; the first limiting groove 243 has two first sub-wall surfaces 247, and the two first sub-wall surfaces 247 are in line contact with the guide column 209 respectively, and the angle formed by the two first sub-wall surfaces 247 is an obtuse angle; the second limiting groove 244 has three third sub-wall surfaces 249, and the groove bottom of the second limiting groove 244 is one of the third sub-wall surfaces 249. The second limiting groove 244 can only have the groove bottom in line contact with the guide column 209, and the guide column 209 can be called the first guide column.

[0137] Fig.13 yes Fig.11 The local enlarged schematic diagram of point E in the middle; see Fig.13 As shown, among the three third sub-walls 249 of the second limiting groove 244, the angle between the two third sub-walls 249 connected to the groove bottom of the second limiting groove 244 is an obtuse angle, and the guide column 209 is in line contact with the two first sub-walls 247 of the first limiting groove 243 respectively; the two third sub-walls 249 connected to the groove bottom of the second limiting groove 244 are in line contact with the guide column 209 respectively, and the guide column 209 can be called a second guide column. In this way, the structures of the two second limiting grooves 244 on the inner side of the frame 207 are different, combined with Fig.12 and Fig.13As shown, the first limiting groove 243 and the second limiting groove 244 for accommodating the second guide column limit the second guide column; while the first limiting groove 243 and the second limiting groove 244 for accommodating the second guide column limit the first guide column, since the first guide column only contacts the bottom line of the second limiting groove 244, it can avoid the lens holder 204 and the frame 207 from getting stuck. In addition, the application adopts the diagonal distribution of the two guide columns 209, which can reduce the requirement for the magnitude of the magnetic attraction generated by the first subassembly and the second subassembly, so as to achieve the purpose of reducing the friction between the frame 207 and the lens holder 204. Furthermore, in the related art, when using a mobile phone to take pictures, especially when the mobile phone is upright, the lens 202 will tilt downward, that is, there will be a certain angle between the optical axis of the lens 202 and the horizontal plane; while in the present application, two guide posts 209 are diagonally distributed, which is beneficial to reduce the demand for the magnetic attraction force of any magnet in the magnetic attraction component, the third magnet 255 and the fourth magnet 256; furthermore, since the driving device is in the shape of a rectangular parallelepiped, when the two guide posts 209 are diagonally distributed, the guide posts have a certain supporting effect on the lens frame, thereby solving the problem of the voice coil motor in the related art causing the lens to tilt to a certain extent, and avoiding the breakage of the suspension wire of the spring-cage suspension wire motor.

[0138] It should be noted that, in some other possible implementations, the guide slot may be further provided with a plurality of guide posts 209 .

[0139] Fig.14 is a schematic diagram of the structure of the lens holder 204 in the embodiment of the present application; Fig.14 As shown, the outer side surface of the lens holder 204 includes two first rectangular planes 250 and two second rectangular planes, the two first rectangular planes 250 are parallel to each other, the two second rectangular planes 251 are parallel to each other, the first rectangular plane 250 is perpendicular to the second rectangular plane 251, and both the first rectangular plane 250 and the second rectangular plane 251 are parallel to the first direction; one of the two first rectangular planes 250 is the third side 226, and the other first rectangular plane 250 is the fourth side 227. The fourth side 227 is provided with a fourth mounting groove 252 at one end in the length direction of the driving device 201.

[0140] Fig.15 is a schematic diagram of the structure of the frame 207 in the embodiment of the present application; Fig.16 yes Fig.15 A top view of the middle frame 207; Fig.15 and Fig.16As shown, in some embodiments, the frame 207 has four sub-sides 253, and the four sub-sides 253 are connected end to end to enclose the first accommodating space 208; a groove 242 is provided at the connection between two adjacent sub-sides 253 so that the bent portion 240 is suspended.

[0141] Fig.17 yes Fig.15 A structural diagram of another perspective of the frame 207 in FIG. Fig.17 As shown, there are four third limiting grooves 245 , one third limiting groove 245 is provided at the connection between each two adjacent sub-side portions 253 , the notch of the third limiting groove 245 is roughly quadrilateral, and the first ball 233 can roll freely in the third limiting groove 245 .

[0142] Fig.18 is a schematic diagram of the structure of the base 205 in the embodiment of the present application; see Fig.18 As shown, there are four limit plates 238, the bottom plate 237 is roughly square, and a through hole 254 is provided on the bottom plate 237; a fourth limit groove 246 is provided on the bottom plate 237, and four fourth limit grooves 246 are respectively located at four limit plates 238. The bottom plate 237 and the limit plate 238 can be an integral structure. The first ball 233 is located on the plane of the bottom of the fourth limit groove 246, which is conducive to reducing the height of the driving device 201. A photosensitive element can be provided on the bottom plate 237, or the photosensitive element is installed in the inner cavity of the electronic device, and the photosensitive element receives the light transmitted by the lens 202 through the through hole 254 on the bottom plate 237.

[0143] It should be noted that in some other possible implementations, the bottom plate 237 may also be in other shapes such as a rectangle or a circle.

[0144] Please return Figure 5As shown, the first subassembly also includes a fifth magnetic yoke 222; the fifth magnetic yoke 222 is fixed on the base 205, and the fifth magnetic yoke 222 corresponds to the third magnet 255. In this way, the fourth magnetic yoke 221 is used to increase the magnetic field strength of the third magnet 255, and the fifth magnetic yoke 222 is used to cooperate with the third magnet 255 so that the third magnet 255 attracts the fifth magnetic yoke 222, thereby ensuring that the frame 207 and the base 205 can cooperate in the first direction through the first ball 233. The second subassembly also includes a seventh magnetic yoke 224; the seventh magnetic yoke 224 is fixed on the base 205, and the seventh magnetic yoke 224 corresponds to the fourth magnet 256. In this way, the sixth magnetic yoke 223 is used to increase the magnetic field strength of the fourth magnet 256, and the seventh magnetic yoke 224 is used to cooperate with the fourth magnet 256, so that the fourth magnet 256 attracts the seventh magnetic yoke 224, so that the frame 207 and the base 205 can cooperate through the first ball 233 in the first direction, and the magnetic attraction force is used to ensure the stability between the frame 207 and the base 205 when the driving device 201 is powered off, so as to avoid the problem of eccentric tilt of the lens 202. In addition, the fourth magnetic yoke 221 and the fifth magnetic yoke 222 share the third magnet 255, and the sixth magnetic yoke 223 and the seventh magnetic yoke share the fourth magnet 256, which is conducive to reducing the number of components, simplifying the structure of the driving device 201, and reducing the complexity and cost of assembly.

[0145] Please continue to see Figure 5 As shown, the first driving assembly also includes a second magnetic yoke 219 and a third magnetic yoke 220; the second magnetic yoke 219 is fixed to the frame 207, and the second magnetic yoke 219 can be fixed to the other side of the first circuit board 211 that is away from the magnetic attraction assembly, and the second magnetic yoke 219 is fixed to one end of the length direction of the first circuit board 211; the second magnetic yoke 219 cooperates with the magnetic attraction assembly. The third magnetic yoke 220 is fixed to the fourth side 227 of the outer side of the lens frame 204. Specifically, the third magnetic yoke 220 is fixed to Fig.14 The third magnetic yoke 220 cooperates with the fourth magnet 256. The second magnetic yoke 219 cooperates with the magnetic attraction component, and the third magnetic yoke 220 cooperates with the fourth magnet 256 to improve the stability of the lens holder 204 when it moves with the frame 207. Fig.11 As shown, Fig.11The position indicated by the arrow of the middle guide line F is the position of the third magnetic yoke 220, and the position indicated by the arrow of the guide line G is the position of the second magnetic yoke 219. The second magnetic yoke 219 and the third magnetic yoke 220 are spaced apart in the second direction, and the second magnetic yoke 219 and the third magnetic yoke 220 are spaced apart in the third direction, so that the second magnetic yoke 219 and the third magnetic yoke 220 are equivalent to being diagonally arranged on the driving device 201, and because the second magnetic yoke 219 cooperates with the magnetic attraction component, and the third magnetic yoke 220 cooperates with the fourth magnet 256, the lens holder 204 can rotate counterclockwise at a certain angle relative to the frame 207, so that the guide column 209 is clamped between the frame 207 and the lens holder 204, thereby ensuring the stability of the lens holder 204 moving with the frame 207.

[0146] See also Figure 5 As shown, in one embodiment, the magnetic attraction component, the third magnet 255 and the fourth magnet 256 are respectively located on three sides of the driving device 201, so that one side of the driving device 201 can be free of magnetic interference, which is conducive to the assembly of the driving device 201 in the electronic device. It should be noted that in some other possible implementations, the number of first driving components can also be set to two, so that on the driving device 201, one first driving component is arranged opposite to the second sub-component, and the other first driving component is arranged opposite to the first sub-component.

[0147] In the description of the specification of the present application, specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. It should be noted that in the embodiment of the present application, the relevant part for realizing the autofocus of the driving device 201 can be separately designed as a motor with only the autofocus function; and the relevant part for realizing the optical image stabilization of the driving device 201 can be separately designed as a motor with only the optical image stabilization.

[0148] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A driving device, characterized in that: include: Pedestal; A frame, wherein the frame is movable relative to the base on a first plane, and the frame has a first accommodation space; A lens frame, wherein the lens frame is configured to be connected to the lens, and at least a portion of the structure of the lens frame is located in the first accommodation space; A guide column is provided between the lens holder and the frame to guide the movement of the lens holder relative to the frame along a first direction, and a first angle is formed between the first direction and the first plane.

2. The driving device according to claim 1, characterized in that: The guide column is located between the outer side surface of the lens holder and the inner side surface of the frame, and the length direction of the guide column is parallel to the first direction.

3. The driving device according to claim 2, characterized in that: The outer side surface of the lens frame has a first limiting groove, the inner side surface of the frame has a second limiting groove, and the guide column is located between the first limiting groove and the second limiting groove.

4. The driving device according to any one of claims 1 to 3, characterized in that: There are multiple guide posts, and the multiple guide posts are distributed along the outer side surface of the lens frame.

5. The driving device according to claim 4, characterized in that: The driving device is in a rectangular parallelepiped shape, and the number of the guide posts is two, and the two guide posts are located on the diagonal line of the driving device.

6. The driving device according to any one of claims 1 to 3, characterized in that: The guide post is fixedly connected to the lens frame, and there is line contact or surface contact between the guide post and the frame; Or, the guide post is fixedly connected to the frame, and there is line contact or surface contact between the guide post and the lens holder; Alternatively, the guide post and the frame are in line contact or surface contact, and the guide post and the lens holder are in line contact or surface contact.

7. The driving device according to any one of claims 1 to 3, characterized in that: A first ball bearing is arranged between the frame and the base, wherein the frame has a first side surface and a second side surface opposite to each other, the direction from the first side surface to the second side surface is parallel to the first direction, the first side surface of the frame has a third limiting groove, the first ball bearing is located in the third limiting groove, and the first side surface of the frame is separated from the base by the first ball bearing.

8. The driving device according to claim 7, characterized in that: A first gasket is fixed to the bottom of the third limiting groove, a second gasket is fixed on the base, and the first ball is in contact with the first gasket and the second gasket respectively.

9. The driving device according to claim 7, characterized in that: At least one first elastic member is arranged between the frame and the base.

10. The driving device according to claim 9, characterized in that The first elastic member includes a first connecting piece, a bent portion and a second connecting piece; the first connecting piece is fixedly connected to one end of the bent portion, the other end of the bent portion is fixedly connected to the second connecting piece, the first connecting piece is fixedly connected to the base, and the second connecting piece is fixedly connected to the second side surface of the frame.

11. The driving device according to claim 10, characterized in that: In the first direction, there is a height difference between the first connecting piece and the second connecting piece, and the distance between the first connecting piece and the first side surface of the frame is smaller than the distance between the second connecting piece and the first side surface of the frame; the second side surface of the frame has a groove, and there is a spacing between the bottom of the groove and the bent portion.

12. The driving device according to claim 10, characterized in that There are multiple first elastic members, and the multiple first elastic members are distributed along the outer circumference of the frame.

13. The driving device according to any one of claims 1 to 3, characterized in that: The drive device also includes a first drive assembly and a second drive assembly; The first driving assembly is used to drive the lens holder to move relative to the frame along the first direction; The second driving assembly is used to drive the frame to move on the first plane relative to the base.

14. The driving device according to claim 13, characterized in that: The first driving component includes a first coil mounted on the frame, and a magnetic attraction component fixed on the lens holder, the first coil cooperates with the magnetic attraction component; the magnetic attraction component includes a first magnet and a second magnet, the first magnet and the second magnet are distributed along the first direction; The first coil and the magnetic attraction component are distributed along a direction perpendicular to the first direction.

15. The driving device according to claim 14, characterized in that The first driving assembly further includes a first magnetic yoke and a first circuit board; The outer side surface of the lens holder has a third side and a fourth side opposite to each other, the first magnetic yoke is fixed to the third side of the outer side surface of the lens holder, the first magnetic yoke is in contact with the magnetic attraction component, and the first magnetic yoke is located on a side of the magnetic attraction component facing away from the first coil; The first circuit board is fixed on the frame, the first coil is electrically connected to the first circuit board, and the first coil is located on a side of the first circuit board facing the magnetic attraction component.

16. The driving device according to claim 14, characterized in that: The second driving assembly includes a first subassembly and a second subassembly, the first subassembly being used to drive the frame to move in a second direction relative to the base, and the second subassembly being used to drive the frame to move in a third direction relative to the base; There is a second angle between the second direction and the third direction, and the second direction and the third direction are respectively parallel to the first plane.

17. The driving device according to claim 16, characterized in that The first subassembly includes a second coil mounted on the base, and a third magnet fixed on the frame; the second coil cooperates with the third magnet; The second subassembly includes a third coil mounted on the base, and a fourth magnet fixed on the frame; the third coil cooperates with the fourth magnet; The second coil and the third coil are respectively located on two adjacent sides of the base, and the third magnet and the fourth magnet are respectively located on two adjacent sides of the frame; The second driving component also includes a second circuit board, and the second coil and the third coil are electrically connected to the second circuit board respectively.

18. The driving device according to claim 17, characterized in that The outer side surface of the lens holder has a third side and a fourth side opposite to each other; The first driving assembly further includes a second magnetically conductive yoke and a third magnetically conductive yoke; The second magnetic yoke is fixed on the frame, and the second magnetic yoke cooperates with the magnetic attraction component; The third magnetic yoke is fixed to the fourth side of the outer side surface of the lens holder, and the third magnetic yoke cooperates with the fourth magnet; The second magnetically conductive yoke and the third magnetically conductive yoke are spaced apart from each other in the second direction, and the second magnetically conductive yoke and the third magnetically conductive yoke are spaced apart from each other in the third direction.

19. The driving device according to claim 17, characterized in that: The first subassembly further includes a fourth magnetically conductive yoke and a fifth magnetically conductive yoke; The fourth magnetic yoke is fixed on the frame, and the fourth magnetic yoke is located on a side of the third magnet facing away from the second coil; The fifth magnetic yoke is fixed on the base, and the fifth magnetic yoke corresponds to the third magnet.

20. The driving device according to claim 18, characterized in that The second subassembly further includes a sixth magnetically conductive yoke and a seventh magnetically conductive yoke; The sixth magnetic yoke is fixed on the frame, and the sixth magnetic yoke is located on a side of the fourth magnet facing away from the third coil; The seventh magnetic yoke is fixed on the base, and the seventh magnetic yoke corresponds to the fourth magnet.

21. A driving device as claimed in any one of claims 13, characterized in that: The driving device further comprises a shell, the shell is fixedly connected to the base, the shell and the base cooperate to form an installation cavity, and the frame and the lens holder are located in the installation cavity.

22. The driving device according to any one of claims 1 to 3, characterized in that: The base includes a bottom plate and a plurality of limiting plates fixed on the bottom plate; the plurality of limiting plates cooperate with the bottom plate to form a limiting space, and the frame is arranged in the limiting space.

23. The driving device according to any one of claims 1 to 3, characterized in that: The first direction is perpendicular to the first plane, and the first direction is parallel to the optical axis direction of the lens.

24. A camera module, characterized in that: It comprises a lens and a driving device as described in any one of claims 1 to 23, wherein the lens is fixedly connected to the lens frame.

25. An electronic device, characterized in that: It comprises a shell and a camera module as claimed in claim 24, wherein the camera module is mounted on the shell.

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