Driving device and camera module

Abstract

The invention discloses a driving device and a camera module. The driving device comprises a base; the frame is movably arranged on the base; the carrier is movably arranged on the frame; the driving assembly is used for driving the carrier to move relative to the frame and driving the frame to move relative to the base; the suspension assembly comprises a first elastic connecting piece and a second elastic connecting piece, one end of the first elastic connecting piece is connected with the base, the other end of the first elastic connecting piece is connected with the frame, one end of the second elastic connecting piece is connected with the frame, the other end of the second elastic connecting piece is connected with the carrier, and the first elastic connecting piece comprises a first deformation part arranged between the base and the frame; the second elastic connecting piece comprises a second deformation part arranged between the frame and the carrier, and the cross sectional area of the first deformation part is different from that of the second deformation part, so that the elastic coefficient of the first deformation part is different from that of the second deformation part.

Description

Technical Field

[0001] This application relates to the field of imaging technology, and particularly to a driving device and an imaging module. Background Art

[0002] With the popularization of mobile electronic devices, the related technologies of imaging modules applied to mobile electronic devices to help users obtain images have developed rapidly. Currently in the market, consumers have increasingly high and diverse requirements for the functions of imaging modules configured in mobile electronic devices (such as smartphones).

[0003] For example, for common optical focusing functions and optical image stabilization functions, a driving device that can drive an optical lens or an image sensor chip to move is usually provided in the imaging module to achieve them. However, with the improvement of the performance of the imaging module, the requirements for the driving device in the imaging module also increase accordingly.

[0004] Therefore, this application provides a new driving device. Summary of the Invention

[0005] An object of this application is to provide a driving device and an imaging module, which improve the suspension assembly in the driving device so that the elastic coefficients of different parts of the suspension assembly can meet different design requirements.

[0006] According to a first aspect of this application, a driving device is provided, including:

[0007] A base;

[0008] A frame, movably arranged on the base;

[0009] A carrier, movably arranged on the frame;

[0010] A driving component, capable of driving the carrier to move relative to the frame and driving the frame to move relative to the base;

[0011] A suspension assembly, including a first elastic connecting member and a second elastic connecting member. One end of the first elastic connecting member is connected to the base, and the other end is connected to the frame. One end of the second elastic connecting member is connected to the frame, and the other end is connected to the carrier. Wherein, the first elastic connecting member includes a first deformation part arranged between the base and the frame, and the second elastic connecting member includes a second deformation part arranged between the frame and the carrier. The cross-sectional area of the first deformation part is different from the cross-sectional area of the second deformation part, so that the elastic coefficient of the first deformation part is different from the elastic coefficient of the second deformation part.

[0012] As a preference, the cross-sectional area of the first deformation part is smaller than that of the second deformation part, so that the elastic coefficient of the first deformation part is lower than that of the second deformation part.

[0013] As a preference, at least two first elastic connectors are provided. Each first elastic connector further includes a first outer fixing part and a first inner fixing part connected to both ends of the first deformation part. One end of the first deformation part is connected to the base through the first outer fixing part, and the other end is connected to the frame through the first inner fixing part. And the first deformation part extends from the first outer fixing part to the first inner fixing part in a bent manner; at least two second elastic connectors are provided. Each second elastic connector further includes a second outer fixing part and a second inner fixing part connected to both ends of the second deformation part. One end of the second deformation part is connected to the frame through the second outer fixing part, and the other end is connected to the carrier through the second inner fixing part. And the second deformation part extends from the second outer fixing part to the second inner fixing part in a bent manner.

[0014] As a preference, the first elastic connector and the second elastic connector are separately provided.

[0015] As a preference, the elasticity of the material of the first elastic connector is less than that of the material of the second elastic connector.

[0016] As a preference, the driving assembly can drive the carrier to move relative to the frame in a first direction, and can drive the frame to move relative to the base in a second direction perpendicular to the first direction. Along the second direction, at least part of the base is arranged on one side of the frame, and the carrier is arranged on the other side of the frame. The first elastic connector and the second elastic connector are arranged on the same side of the driving device along the first direction.

[0017] As a preference, the first deformation part is a strip-shaped structure that bends and extends between the base and the frame, the second deformation part is a strip-shaped structure that bends and extends between the frame and the carrier, the thickness of the first deformation part is less than that of the second deformation part, and / or the width of the first deformation part is less than that of the second deformation part.

[0018] As a preference, the base includes a base portion extending in a plane perpendicular to the first direction, and a first mounting portion protruding in the first direction relative to the base portion. The frame includes a second mounting portion disposed opposite the first mounting portion in the second direction, and a relief portion recessed in the first direction relative to the second mounting portion. The carrier includes a third mounting portion disposed opposite the second mounting portion in the second direction. One end of the first elastic connection member is connected to the first mounting portion, and the other end is connected to the second mounting portion. One end of the second elastic connection member is connected to the second mounting portion, and the other end is connected to the third mounting portion. The first deformation portion and the second deformation portion are disposed on one side of the relief portion in the first direction.

[0019] As a preference, it further includes a support assembly. The support assembly includes a plurality of balls clamped between the base and the frame. The base includes a first mounting groove, and the frame includes a second mounting groove vertically disposed opposite the first mounting groove. The balls are clamped between the first mounting groove and the second mounting groove, and the first mounting groove penetrates the outer sidewall of the base along the length direction of the first mounting groove.

[0020] As a preference, the first elastic connection member and the second elastic connection member are both conductive, and the first elastic connection member and the second elastic connection member are electrically connected to each other so that the base, the frame, and the carrier are electrically connected.

[0021] As a preference, the driving assembly includes a magnet portion, a base coil portion, and a carrier coil portion. The base coil portion is fixedly connected to the base, the magnet portion is fixedly connected to the frame, and the carrier coil portion is fixedly connected to the carrier. Wherein, at least part of the magnet portion is disposed opposite the base coil portion, and the base coil portion can drive the magnet portion under the action of current, so that the frame moves relative to the base. At least part of the magnet portion is disposed opposite the carrier coil portion, and the carrier coil portion can move relative to the magnet portion under the action of current, so that the carrier moves relative to the frame.

[0022] As a preference, the size of one side of the magnet portion facing away from the base coil portion is smaller than the size of the side close to the base coil portion, and / or the size of one side of the magnet portion facing away from the carrier coil portion is smaller than the size of the side close to the carrier coil portion.

[0023] As a preference, it further includes a position sensing assembly communicatively connected to the driving assembly. The position sensing assembly includes a first sensing module capable of measuring the position change of the frame relative to the base, and a second sensing module capable of measuring the position change of the carrier relative to the frame.

[0024] According to a second aspect of the present application, there is provided an imaging module, including:

[0025] An image sensor;

[0026] An optical lens, the optical lens being held on the light sensing path of the image sensor; and,

[0027] The above-mentioned driving device, the driving device being able to drive the optical lens to move relative to the image sensor.

[0028] In the present application, two ends of the first elastic connecting member are respectively connected to the base and the frame, and two ends of the second elastic connecting member are respectively connected to the frame and the carrier. Since the connection objects of the first elastic connecting member and the second elastic connecting member are different, the functions achieved may also be different, and there are differences in the design requirements of the elastic coefficients of the two elastic connecting members. By setting different cross-sectional areas for the first deformation portion of the first elastic connecting member and the second deformation portion of the second elastic connecting member, it is possible to assist in adjusting the elastic coefficients of the first deformation portion and the second deformation portion respectively. Description of the Drawings

[0029] Figure 1 It is a schematic cross-sectional structure diagram of the imaging module in an embodiment of the present application;

[0030] Figure 2 It is an exploded structure diagram of the driving device in an embodiment of the present application;

[0031] Figure 3 It is a schematic structure diagram of the driving device when the cover is removed in an embodiment of the present application;

[0032] Figure 4 It is an enlarged schematic diagram of a partial structure of the driving device after the cover is removed in an embodiment of the present application;

[0033] Figure 5 It is a schematic diagram of a partial structure of the suspension assembly in the present application;

[0034] Figure 6 It is a schematic structure diagram of the base part in an embodiment of the present application;

[0035] Figure 7 It is a schematic structure diagram of the frame part in an embodiment of the present application;

[0036] Figure 8 It is a schematic structure diagram of the carrier part in an embodiment of the present application;

[0037] Figure 9 It is a schematic cross-sectional structure diagram of the driving device along the XOZ plane in an embodiment of the present application;

[0038] Figure 10Schematic cross-sectional structure diagram of the driving device along the YOZ plane in an embodiment of the present application;

[0039] Figure 11 Schematic partial structure diagram of the driving device and the conductive member in an embodiment of the present application;

[0040] In the figure: 10, optical lens; 11, lens barrel; 12, lens; L, optical axis; 20, driving device; 201, light path; 21, base; 211, base portion; 2111, first base side portion; 2112, second base side portion; 2113, third base side portion; 2114, fourth base side portion; 2115, base through hole; 2116, first mounting groove; 212, first mounting portion; 213, conductive member; 2131, base circuit board; 2132, conductive insert; 22, frame; 2211, first frame side portion; 2212, second frame side portion; 2213, third frame side portion; 2214, fourth frame side portion; 2215, frame through hole; 222, second mounting portion; 223, avoidance portion; 224, magnetic conductive member; 23, carrier; 2311, first carrier side portion; 2312, second carrier side portion; 2313, third carrier side portion; 2314, fourth carrier side portion; 2315, carrier through hole; 232, third mounting portion; 233, carrier circuit board; 24, driving assembly; 241, base coil portion; 2411, first base coil; 2412, second base coil; 2413, third base coil; 242, magnet portion; 2421, first driving magnet; 2422, second driving magnet; 2423, third driving magnet; 243, carrier coil portion; 2431, first carrier coil; 2432, second carrier coil; 25, suspension assembly; 251, first elastic connecting member; 2511, first outer fixing portion; 2512, first deformation portion; 2513, first inner fixing portion; 252, second elastic connecting member; 2521, second outer fixing portion; 2522, second deformation portion; 2523, second inner fixing portion; 253, third elastic connecting member; 26, support assembly; 261, ball; 27, cover; 281, magnetic attracting member; 29, position sensing assembly; 291, first sensing module; 2911, first sensing element; 2912, second sensing element; 292, second sensing module; 2921, third sensing magnet; 2922, third sensing element; 30, photosensitive device; 31, photosensitive assembly; 311, photosensitive chip; 312, chip circuit board; 313, electronic component; 32, filter assembly; 321, filter element; 322, filter bracket. Detailed implementation manners

[0041] Next, in combination with specific embodiments, the present application will be further described. It should be noted that, on the premise of no conflict, any combination of the following-described embodiments or technical features can form a new embodiment.

[0042] In the description of the present application, it should be noted that for orientation terms, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated orientation and position relationship are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present application.

[0043] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects and do not necessarily have to describe a specific order or sequence.

[0044] The terms "include" and "have" in the description and claims of the present application, and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0045] It should be noted that, as used in the present application, terms such as "substantially", "about", and similar terms are used as approximate terms and not as terms of degree, and are intended to account for the inherent deviations in measured or calculated values that would be recognized by a person of ordinary skill in the art.

[0046] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or connected by contact or indirectly through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0047] "configured to", various units, circuits, or other components may be described or recited as "configured to" perform one or more tasks. In such contexts, "configured to" is used to imply a structure (e.g., a circuit) by indicating that the unit / circuit / component includes the structure that performs the one or more tasks during operation. Additionally, "configured to" may include a general structure (e.g., a general circuit) manipulated by software and / or firmware to operate in a manner capable of performing the one or more tasks to be solved. "configured to" may also include adjusting a manufacturing process (e.g., a semiconductor fabrication facility) to fabricate a device (e.g., an integrated circuit) suitable for implementing or performing the one or more tasks.

[0048] The terms used in this description are for the purpose of describing particular embodiments only and are not intended to be limiting. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to also cover the plural forms unless the context clearly indicates otherwise. It will also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. It will also be understood that the terms "comprises" and / or "comprising" when used in this specification specify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or their groups.

[0049] Exemplary camera module

[0050] Figures 1 to 11 The driving device 20 and the camera module of the present application are shown, as Figure 1 shown, the camera module includes a photosensitive device 30, an optical lens 10, and a driving device 20. Among them, the optical lens 10 is held on the light-sensitive path of the photosensitive device 30. The optical lens 10 collects the light reflected by the object to be photographed and emits light to the photosensitive device 30. The photosensitive device 30 receives the light emitted by the optical lens 10 for imaging, thereby obtaining an image of the object to be photographed. The driving device 20 drives the optical lens 10 to move relative to the photosensitive device 30, thereby realizing optical performance adjustment, such as optical image stabilization and optical focusing functions.

[0051] In some embodiments, the optical lens 10 includes a lens barrel 11 and at least one lens 12. The optical lens 10 has an optical axis L. The lens 12 is disposed on the lens barrel 11 along the optical axis L. It can be understood that the optical axis L of the optical lens 10 is also the optical axis L of the lens 12. As Figure 1As shown, in the present application, the direction of the optical axis L is the direction in which the optical axis L extends, that is, the height direction of the imaging module, or the vertical direction shown in the figure. More specifically, taking the side of the imaging module facing the object to be photographed as the object side and the side opposite to the object side as the image side, that is, the side where the photosensitive device 30 is arranged as the image side, then the direction of the optical axis L includes the direction pointing to the object side along the optical axis L and the direction pointing to the image side along the optical axis L. In other words, the direction of the optical axis L includes upward and downward. Correspondingly, the direction perpendicular to the direction of the optical axis L is the direction perpendicular to the extending direction of the optical axis L, which is Figure 1 the horizontal direction shown, specifically including but not limited to the left-right direction and the front-back direction shown in the figure.

[0052] In some embodiments, an optical lens 10 is carried above the driving device 20, and a photosensitive device 30 is arranged below the driving device 20. The optical lens 10 is held on the photosensitive path of the photosensitive device 30 through the driving device 20. The driving device 20 can drive the optical lens 10 to move in the direction of the optical axis L to achieve the optical image stabilization function, or drive the optical lens 10 to move in the direction perpendicular to the direction of the optical axis L to achieve the optical image stabilization function.

[0053] In some embodiments, the photosensitive device 30 includes a photosensitive component 31, and the photosensitive device 30 realizes receiving the light emitted by the optical lens 10 for imaging through the photosensitive component 31. Specifically, the photosensitive component 31 includes a photosensitive chip 311, a chip circuit board 312, and electronic components 313. The photosensitive chip 311 is used to receive the imaging light emitted by the optical lens 10 for imaging. The photosensitive path of the photosensitive device 30 is the photosensitive path of the photosensitive chip 311 in the photosensitive component 31. The photosensitive chip 311 and the electronic components 313 are respectively electrically connected to the chip circuit board 312, and the chip circuit board 312 is adapted to be electrically connected to an external electronic device. The circuit board mentioned in the present application, such as the chip circuit board 312, can be a rigid circuit board (PCB), a flexible circuit board (FPC), or a rigid-flexible combination board. The electronic components 313 can be one or more of passive electronic devices such as resistors and capacitors, or one or more of active electronic devices such as driving chips and storage chips, or the electronic components 313 include both passive electronic devices and active electronic devices at the same time.

[0054] In some embodiments, the photosensitive device 30 includes a photosensitive component 31 and a filter component 32. The filter component 32 is disposed between the optical lens 10 and the photosensitive component 31 and is configured to filter the light rays emitted from the optical lens 10, removing unwanted stray light such as infrared light in the light rays. The filtered imaging light rays are collected by the photosensitive component 31 for imaging. Specifically, the filter component 32 includes a filter element 321 and a filter holder 322. The filter element 321 is used to filter out the stray light, and the filter element 321 is held on the photosensitive path of the photosensitive device 30 through the filter holder 322. More specifically, the photosensitive component 31 is fixedly connected to the driving device 20 through the filter holder 322 or the chip circuit board 312, and the filter holder 322 is fixedly connected to the chip circuit board 312.

[0055] In this application, the fixed connection is a concept opposite to the movable connection and the movable setting, meaning that there is no or almost no relative displacement between the two connected to each other. The fixed connection can be that the two connected are pre-formed separately and then connected by means such as bonding, or can be integrally formed by means such as injection molding process. This application does not make specific limitations in this regard.

[0056] Exemplary driving device

[0057] This application provides a driving device 20, which includes a base 21, a frame 22, a carrier 23 and a driving component 24. The frame 22 is movably disposed on the base 21, the carrier 23 is movably disposed on the frame 22, and the driving component 24 is configured to drive the carrier 23 to move relative to the frame 22 and drive the frame 22 to move relative to the base 21. It can be understood that since the frame 22 is movably disposed on the base 21, when the driving component 24 drives the carrier 23 to move relative to the frame 22, the carrier 23 also generates a displacement relative to the base 21 at the same time. Similarly, since the carrier 23 is movably disposed on the frame 22, when the driving component 24 drives the frame 22 to move relative to the base 21, the carrier 23 can move with the frame 22 relative to the base 21. That is to say, the driving device 20 drives the carrier 23 to move through the driving component 24, including directly driving the carrier 23 to move relative to the frame 22 and directly driving the frame 22 to move relative to the base 21 so as to move the carrier 23 in two ways.

[0058] In some embodiments, the driving device 20 further includes a suspension component 25 for suspending the carrier 23 in the frame 22, such as Figures 2 - 5 shown, the suspension component 25 includes a first elastic connection member 251 and a second elastic connection member 252. One end of the first elastic connection member 251 is connected to the base 21, and the other end is connected to the frame 22. One end of the second elastic connection member 252 is connected to the frame 22, and the other end is connected to the carrier 23. Correspondingly, the first elastic connection member 251 is located outside the second elastic connection member 252 away from the optical axis L.

[0059] In some alternative embodiments, the suspension assembly 25 further has an electrical connection function. For example, the first elastic connecting member 251 can be made of a conductive material, and the first elastic connecting member 251 can conduct electricity, enabling electrical connection between the circuit elements on the base 21 and the circuit elements on the frame 22. Alternatively, the second elastic connecting member 252 can be made of a conductive material, and the second elastic connecting member 252 can conduct electricity, enabling electrical connection between the circuit elements on the frame 22 and the circuit elements on the carrier 23. In a specific embodiment, both the first elastic connecting member 251 and the second elastic connecting member 252 can conduct electricity. The first elastic connecting member 251 mainly functions for electrical connection, and the second elastic connecting member 252 is used to suspend the carrier 23 in the frame 22. The first elastic connecting portion and the second elastic connecting portion are electrically connected to each other, so that the base 21, the frame 22, and the carrier 23 are electrically connected.

[0060] In some alternative embodiments, the suspension assembly 25 further has a reset function, such as for resetting the carrier 23 relative to the frame 22. Specifically, this reset function can be provided by the second elastic connecting member 252, or by other elastic connecting members provided between the frame 22 and the carrier 23, or by the second elastic connecting member 252 and other elastic connecting members together. In other words, in some embodiments, the second elastic connecting member 252 has a certain K value, that is, an elastic coefficient. Thus, when the driving assembly 24 operates to drive the carrier 23 to move away from the initial position relative to the frame 22, when the driving assembly 24 stops operating, the second elastic connecting member 252 can provide at least part of the force required for the carrier 23 to reset, so that the carrier 23 returns to or approximately returns to the initial position. In some other embodiments, the elastic coefficient of the second elastic connecting member 252 is small and does not play a role in the reset of the carrier 23.

[0061] In some alternative embodiments, the suspension assembly 25 can be used to reset the frame 22 relative to the base 21. Specifically, this reset function can be provided by the first elastic connecting member 251, or by other elastic connecting members provided between the base 21 and the frame 22, or by the first elastic connecting member 251 and other elastic connecting members together. In other words, in some embodiments, the first elastic connecting member 251 has a certain K value, that is, an elastic coefficient. Thus, when the driving assembly 24 operates to drive the frame 22 to move away from the initial position relative to the base 21, when the driving assembly 24 stops operating, the first elastic connecting member 251 can provide at least part of the force required for the frame 22 to reset, so that the frame 22 returns to or approximately returns to the initial position. In some other embodiments, the elastic coefficient of the first elastic connecting member 251 is small and does not play a role in the reset of the frame 22.

[0062] In some embodiments, both the first elastic connecting member 251 and the second elastic connecting member 252 have a reset function. The first elastic connecting member 251 is used to reset the frame 22, and the second elastic connecting member 252 is used to reset the carrier 23. Since the reset targets of the first elastic connecting member 251 and the second elastic connecting member 252 are different, there are differences in the reset direction and the required reset force, and different elastic coefficients need to be designed for the two elastic connecting members. In a specific example, the first elastic connecting member 251 is used to reset the frame 22 in the horizontal direction, so as to play a reset role in the process of realizing the optical image stabilization function; the second elastic connecting member 252 is used to reset the carrier 23 in the direction of the optical axis L, so as to play a reset role in the process of realizing the optical focusing function. The requirements for the first elastic connecting member 251 and the second elastic connecting member 252 are different for the optical image stabilization function and the optical focusing function. Therefore, different elastic coefficients need to be designed for the two elastic connecting members.

[0063] In some embodiments, the first elastic connecting member 251 includes a first deformation portion 2512 disposed between the base 21 and the frame 22. When the frame 22 moves relative to the base 21, the first deformation portion 2512 undergoes adaptive deformation. The second elastic connecting member 252 includes a second deformation portion 2522 disposed between the frame 22 and the carrier 23. When the carrier 23 moves relative to the frame 22, the second deformation portion 2522 undergoes adaptive deformation. In the related art, generally, the elastic coefficient is adjusted by designing the total length of the deformation portion of the elastic connecting member. Here, the total length of the deformation portion refers to the length of the deformation portion in the natural state, when it is not subjected to an external tensile force, or rather, it can be understood as the overall length of the deformation portion when it does not deform due to the action of the base, the frame or the carrier. When the distance that the elastic connecting member needs to deform and expand is fixed, the longer the length of the deformation portion, the smaller the degree of deformation that each unit length of the deformation portion needs to provide, the easier it is to deform, and relatively speaking, the smaller the elastic coefficient. Among them, the length of the deformation portion can be increased within a certain installation space by bending the deformation portion multiple times. However, with the development of the miniaturization of the driving device, the distance between the base and the frame, and the distance between the frame and the carrier also become smaller, and the installation space available for the deformation portion to bend and extend becomes smaller, and the effect is limited in the adjustment of the elastic coefficient.

[0064] To this end, in the present application, the cross-sectional area of the first deformation portion 2512 is different from that of the second deformation portion 2522, so that the elastic coefficient of the first deformation portion 2512 is different from that of the second deformation portion 2522. It can be understood that when the frame 22 moves relative to the base 21, the first deformation portion 2512 deforms, and when the carrier 23 moves relative to the frame 22, the second deformation portion 2522 deforms. Since the cross-sectional areas of the first deformation portion 2512 and the second deformation portion 2522 are different, the difficulty of deformation per unit length of the first deformation portion 2512 is different from that of the second deformation portion 2522 per unit length, that is to say, the elastic coefficients are different. The elastic coefficients of the first elastic connector 251 and the second elastic connector 252 can respectively meet their respective design requirements.

[0065] In some embodiments, the first elastic connector 251 mainly functions as an electrical connection, while the second elastic connector 252 is required to suspend the carrier 23 in the frame 22. The cross-sectional area of the first deformation portion 2512 is smaller than that of the second deformation portion 2522, so that the elastic coefficient of the first deformation portion 2512 is lower than that of the second deformation portion 2522. In order to avoid the first elastic connector 251 affecting the movement of the frame 22 relative to the base 21, the elastic coefficient of the first elastic connector 251 is designed to be as low as possible, so that the first elastic connector 251 has almost no restoring ability. By setting different cross-sectional areas for the first deformation portion 2512 of the first elastic connector 251 and the second deformation portion 2522 of the second elastic connector 252, the elastic coefficient of the first deformation portion 2512 is separately reduced, so that the elastic coefficient of the first deformation portion 2512 is lower than that of the second deformation portion 2522. In other words, when the frame 22 moves relative to the base 21, the first deformation portion 2512 deforms, and when the carrier 23 moves relative to the frame 22, the second deformation portion 2522 deforms. The cross-sectional area of the first deformation portion 2512 is smaller than that of the second deformation portion 2522, which means that the first deformation portion 2512 can be deformed more easily than the second deformation portion 2522 under the same length. When the frame 22 moves relative to the base 21, the elastic coefficient of the first elastic connector 251 is lower than that of the second elastic connector 252, and the first elastic connector 251 has less or almost no hindrance to the movement of the frame 22. The elastic coefficients of the first elastic connector 251 and the second elastic connector 252 can respectively meet their respective design requirements.

[0066] In some embodiments, at least two first elastic connectors 251 are provided to achieve multi-point connection. Further, the structures of the respective first elastic connectors 251 are the same or similar, and the respective first elastic connectors 251 are axially symmetrically arranged or rotationally symmetrically arranged.

[0067] Specifically, each first elastic connecting member 251 further includes a first outer fixing portion 2511 and a first inner fixing portion 2513 connected to both ends of the first deformation portion 2512. One end of the first deformation portion 2512 is connected to the base 21 through the first outer fixing portion 2511, and the other end is connected to the frame 22 through the first inner fixing portion 2513. Moreover, the first deformation portion 2512 extends in a bent manner from the first outer fixing portion 2511 to the first inner fixing portion 2513. The first deformation portion 2512 extends in a bent manner to reserve sufficient space for the movement of the frame 22 relative to the base 21. And by continuous bending, the total length of the first deformation portion 2512 can be made longer. When the changing distance between the first outer fixing portion 2511 and the first inner fixing portion 2513 is fixed, the degree of deformation required per unit length of the first deformation portion 2512 is smaller, the pulling force required to deform the first deformation portion 2512 is smaller, that is, the resistance force to the movement of the frame 22 when the first deformation portion 2512 deforms is smaller.

[0068] In some embodiments, the second elastic connecting members 252 are provided with at least two to achieve multi-point connection. Further, the structures of the second elastic connecting members 252 are the same or similar, and the second elastic connecting members 252 are arranged axially symmetrically or rotationally symmetrically. It should be understood that in some embodiments, the number of the second elastic connecting members 252 is the same as that of the first elastic connecting members 251; in some embodiments, the number of the second elastic connecting members 252 can also be different from that of the first elastic connecting members 251.

[0069] Specifically, each second elastic connecting member 252 further includes a second outer fixing portion 2521 and a second inner fixing portion 2523 connected to both ends of the second deformation portion 2522. One end of the second deformation portion 2522 is connected to the frame 22 through the second outer fixing portion 2521, and the other end is connected to the carrier 23 through the second inner fixing portion 2523. Moreover, the second deformation portion 2522 extends in a bent manner from the second outer fixing portion 2521 to the second inner fixing portion 2523. The second deformation portion 2522 extends in a bent manner to reserve sufficient space for the movement of the carrier 23 relative to the frame 22. And by continuous bending, the total length of the second deformation portion 2522 can be made longer. When the changing distance between the second outer fixing portion 2521 and the second inner fixing portion 2523 is fixed, the degree of deformation required per unit length of the second deformation portion 2522 is smaller, the pulling force required to deform the second deformation portion 2522 is smaller, that is, the resistance force to the movement of the carrier 23 when the second deformation portion 2522 deforms is smaller. In some alternative embodiments, the length of the first deformation portion 2512 is greater than the length of the second deformation portion 2522, which is beneficial to reducing the resistance force generated by the first elastic connecting member 251 against deformation to the movement of the frame 22 when the frame 22 moves relative to the base 21.

[0070] It is easy to understand that the sizes of the second outer fixing part 2521 and the second inner fixing part 2523 can be larger than the size of the second deformation part 2522 so as to be respectively fixed on the frame 22 and the carrier 23. Similarly, the sizes of the first outer fixing part 2511 and the first inner fixing part 2513 can be larger than the size of the first deformation part 2512.

[0071] In some embodiments, the number of the first elastic connectors 251 and the number of the second elastic connectors 252 can be the same. For example, they can be respectively set to four, or the numbers can be different. It can be understood that when the first elastic connectors 251 are used for electrical connection, the first elastic connectors 251 are set to at least two, and some of the first elastic connectors 251 can be insulated from each other, so as to provide electrical connection for different pins and different circuit elements. Among them, when the first elastic connectors 251 are set to be multiple, one of them, or some of them, or all of them can be used for electrical connection. This also means that in some other embodiments, there can be differences in the structures, materials or functions among the respective first elastic connectors 251. Similarly, some of the second elastic connectors 252 can be insulated from each other, or there are certain differences in the structures, materials or functions among the respective second elastic connectors 252.

[0072] In some embodiments, in order to facilitate the first elastic connectors 251 and the second elastic connectors 252 to be respectively set to different required elastic coefficients, the first elastic connectors 251 and the second elastic connectors 252 are separately arranged, that is, they are respectively manufactured and formed. Of course, in some embodiments, the first elastic connectors 251 can also be integrally formed with the second elastic connectors 252, and different elastic coefficients can be achieved by setting different cross-sectional areas.

[0073] In some embodiments, the respective first elastic connectors 251 are each of an integral structure, that is, the first outer fixing part 2511, the first inner fixing part 2513 and the first deformation part 2512 are integrally formed; the respective second elastic connectors 252 are each of an integral structure, and the second outer fixing part 2521, the second inner fixing part 2523 and the second deformation part 2522 are integrally formed.

[0074] In some embodiments, the first elastic connectors 251 and the second elastic connectors 252 are separately manufactured and formed, and the first inner fixing part 2513 and the second outer fixing part 2521 are fixedly arranged on the frame 22 in an overlapping manner, and welding (such as laser welding, tin welding, etc.) can be performed between the first inner fixing part 2513 and the second outer fixing part 2521, so as to realize the electrical connection between the first elastic connectors 251 and the second elastic connectors 252.

[0075] In some embodiments, the elasticity of the material of the first elastic connecting member 251 is less than that of the material of the second elastic connecting member 252. The first elastic connecting member 251 and the second elastic connecting member 252 can be separately manufactured and formed using different materials, so that the elastic coefficients of the first elastic connecting member 251 and the second elastic connecting member 252 can be adjusted respectively. For example, the elastic coefficient of the first elastic connecting member 251 can be separately reduced.

[0076] In some embodiments, the driving assembly 24 is able to drive the carrier 23 to move relative to the frame 22 in a first direction, and is able to drive the frame 22 to move relative to the base 21 in a second direction perpendicular to the first direction. In other words, the driving device 20 can drive the carrier 23 to move relative to the frame 22 and the base 21 in the first direction through the driving assembly 24, and can also drive the carrier 23 and the frame 22 to move relative to the base 21 in the second direction through the driving assembly 24.

[0077] In some embodiments, the driving device 20 is adapted to drive the optical lens 10 to move relative to the photosensitive assembly 31. Specifically, the optical lens 10 is carried on the carrier 23. When the driving device 20 drives the carrier 23 to move, the optical lens 10 moves with the carrier 23, and the optical lens 10 is able to move relative to the photosensitive assembly 31, so as to achieve the purpose of adjusting the optical performance.

[0078] Further, the optical lens 10 has an optical axis L. The first direction is the direction of the optical axis L, and the second direction is the direction perpendicular to the optical axis L. Then, when the driving device 20 drives the carrier 23 and the optical lens 10 carried on the carrier 23 to move in the first direction, the optical focusing function can be achieved. When the driving device 20 drives the carrier 23 and the optical lens 10 carried on the carrier 23 to move in the second direction, the optical anti-shake function can be achieved.

[0079] In some other embodiments, the driving device 20 is adapted to drive the photosensitive assembly 31 to move relative to the optical lens 10. Specifically, the photosensitive assembly 31 is carried on the carrier 23. When the driving device 20 drives the carrier 23 to move, the photosensitive assembly 31 moves with the carrier 23, and the photosensitive assembly 31 is able to move relative to the optical lens 10, so as to achieve the purpose of adjusting the optical performance.

[0080] In some embodiments, the driving assembly 24 is able to drive the carrier 23 to move relative to the frame 22 in a first direction, and is able to drive the frame 22 to move relative to the base 21 in a second direction perpendicular to the first direction. Along the second direction, at least a part of the base 21 is disposed on one side of the frame 22, the carrier 23 is disposed on the other side of the frame 22, and the first elastic connecting member 251 and the second elastic connecting member 252 are disposed on the same side of the driving device 20 along the first direction. Specifically, as Figure 3As shown, the driving component 24 is adapted to drive the carrier 23 to move relative to the frame 22 along the Z-axis direction in the figure, and is adapted to drive the frame 22 to move relative to the base 21 along the X-axis direction and the Y-axis direction in the figure. By controlling the displacement of the frame 22 in the X-axis direction and the displacement in the Y-axis direction, the movement of the frame 22 in the plane where the X-axis and the Y-axis are located, that is, the XOY plane, can be realized. By controlling the displacement of the frame 22 relative to the base 21 in the X-axis and Y-axis directions, and the displacement of the carrier 23 relative to the frame 22 in the Z-axis direction, the movement of the carrier 23 in three-dimensional space can be realized. Among them, the Z-axis extends along the first direction / the optical axis L direction, and the X-axis, the Y-axis, or other directions projected outward from the point O in the XOY plane can be regarded as the second direction perpendicular to the first direction. Along the direction perpendicular to the Z-axis, at least part of the base 21 is arranged outside the frame 22, the carrier 23 is arranged inside the frame 22, one end of the first elastic connecting member 251 is connected to the base 21, the other end is connected to the frame 22, one end of the second elastic connecting member 252 is connected to the frame 22, the other end is connected to the carrier 23, and both are arranged on the upper side of the driving device 20. It should be understood that when the first elastic connecting member 251 and the second elastic connecting member 252 are both arranged on the upper side (i.e., the object side) of the driving device 20, the first elastic connecting member 251 and the second elastic connecting member 252 are both arranged on the same side; in other embodiments, the first elastic connecting member and the second elastic connecting member can also be respectively arranged on the object side (upper side) and the image side (lower side) of the driving device 20, that is, the first elastic connecting member and the second elastic connecting member are respectively arranged on different sides of the driving device 20.

[0081] In some embodiments, the first deformation portion 2512 is a strip-shaped structure that bends and extends between the base 21 and the frame 22, the second deformation portion 2522 is a strip-shaped structure that bends and extends between the frame 22 and the carrier 23, the thickness t of the first deformation portion 2512 is less than the thickness T of the second deformation portion 2522, and / or, the width w of the first deformation portion 2512 is less than the width W of the second deformation portion 2522. In other words, in some alternative embodiments, the thickness t of the first deformation portion 2512 is less than the thickness T of the second deformation portion 2522; in some other alternative embodiments, the width w of the first deformation portion 2512 is less than the width W of the second deformation portion 2522; or, in yet another part of the embodiments, the thickness t of the first deformation portion 2512 is less than the thickness T of the second deformation portion 2522, and at the same time the width w of the first deformation portion is less than the width W of the second deformation portion 2522. Among them, the width and thickness of the deformation portion are the width and thickness of the deformation portion in the natural state without being subjected to external tensile force, or rather, it can be understood as the width and thickness of the deformation portion when the deformation portion does not deform due to the action of the base, the frame or the carrier.

[0082] More specifically, the first deformation part 2512 includes a plurality of first straight segments 25121 and a plurality of first bending segments 25122. Each of the first straight segments 25121 extends linearly, and each of the first bending segments 25122 is arc-shaped. Adjacent first straight segments 25121 intersect with each other and are connected by a first bending segment 25122. When the first elastic connector 251 is in the natural state, each of the first straight segments 25121 and each of the first bending segments 25122 are in the same plane. Here, the plurality refers to two or more. The length of the first deformation part 2512 refers to the total length of each of the first straight segments 25121 and each of the first bending segments 25122. The width and thickness of the first deformation part refer to the width or thickness at the first straight segment 25121. Among them, for a single first straight segment 25121, its length direction, width direction, and thickness direction are perpendicular to each other in pairs. When the first deformation part deforms with the movement of the frame relative to the base, the first bending segment 25122 deforms, and the angle between adjacent first straight segments 25121 also changes. The second deformation part 2522 includes a plurality of second straight segments 25221 and a plurality of second bending segments 25222. Each of the second straight segments 25221 extends linearly, and each of the second bending segments 25222 is arc-shaped. Adjacent second straight segments 25221 intersect with each other and are connected by a second bending segment 25222. When the second elastic connector 252 is in the natural state, each of the second straight segments 25221 and each of the second bending segments 25222 are in the same plane. The length of the second deformation part 2522 refers to the total length of each of the second straight segments 25221 and each of the second bending segments 25222. The width and thickness of the second deformation part refer to the width or thickness at the second straight segment 25221. Among them, for a single second straight segment 25221, its length direction, width direction, and thickness direction are perpendicular to each other in pairs. When the second deformation part deforms with the movement of the carrier relative to the frame, the second bending segment 25222 deforms, and the angle between adjacent second straight segments 25221 also changes.

[0083] In some alternative embodiments, when the driving device 20 is in a certain working state, the first elastic connector 251 and the second elastic connector 252 extend in a plane perpendicular to the first direction, that is, the first elastic connector 251 and the second elastic connector 252 extend in a plane parallel to the XOY plane. At this time, the thickness direction of the deformation part can be understood as the Z-axis direction / the first direction, and the width is the width of the first deformation part 2512 and the second deformation part 2522 when viewed along the direction perpendicular to the Z-axis or the first direction.

[0084] In some embodiments, the first deformation part 2512 and the second deformation part 2522 are processed from a substrate with a uniform thickness. In some of these embodiments, the thicknesses of the first deformation part 2512 and the second deformation part 2522 are the same, and at the same time, the width w of the first deformation part 2512 is less than the width W of the second deformation part 2522. Thus, the first deformation part 2512 and the second deformation part 2522 can be formed based on the same substrate. Further, the first elastic connecting member 251 and the second elastic connecting member 252 can be formed based on the same substrate, for example, formed from a metal substrate with a uniform thickness. Furthermore, the first inner fixing part 2513 of the first elastic connecting member 251 and the second outer fixing part 2521 of the second elastic connecting member 252 can be an integral structure. In another specific embodiment, if the thickness of the first deformation part 2512 is less than the thickness of the second deformation part 2522, it is not convenient to form them from the same substrate. In this case, two substrates with different thicknesses can be used to separately form the first elastic connecting member 251 and the second elastic connecting member 252.

[0085] In some embodiments, such as Figure 6As shown, the base 21 includes a base 211 extending along a plane perpendicular to the first direction, and a first mounting portion 212 protruding along the first direction relative to the base 211, the frame 22 includes a second mounting portion 222 arranged along the second direction relative to the first mounting portion 212, and an avoidance portion 223 recessed along the first direction relative to the second mounting portion 222, the carrier 23 includes a third mounting portion 232 arranged along the second direction relative to the second mounting portion 222, one end of the first elastic connecting member 251 is connected to the first mounting portion 212, and the other end is connected to the second mounting portion 222, one end of the second elastic connecting member 252 is connected to the second mounting portion 222, and the other end is connected to the third mounting portion 232, and the first deformation portion 2512 and the second deformation portion 2522 are arranged on one side of the avoidance portion 223 along the first direction. The base 211 of the base 21 can provide support for the frame 22 below the frame 22. The first mounting portion 212 protrudes upward relative to the base 211 to extend to the outside of the frame 22 along the second direction. The first mounting portion 212 and the second mounting portion 222 can be relatively arranged along the second direction. That is, the side of the first mounting portion 212 away from the base 211 and the side of the second mounting portion 222 away from the base 211 can provide support for both ends of the first elastic connector 251 on the same side of the drive device 20 along the first direction, so that the first elastic connector 251 can extend in a plane intersecting (including perpendicular) to the first direction. Similarly, a third mounting portion 232 is provided on the carrier 23, and the second mounting portion 222 and the third mounting portion 232 are arranged opposite to each other along the second direction, that is, the side of the second mounting portion 222 away from the base 211 and the side of the third mounting portion 232 away from the base 211 can provide support for both ends of the second elastic connecting member 252 on the same side of the driving device 20 along the first direction, so that the second elastic connecting member 252 can extend in a plane intersecting (including perpendicular) with the first direction, and an avoidance portion 223 recessed downward along the first direction is provided on the frame 22. When the carrier 23 moves up and down relative to the frame 22 along the first direction or the frame 22 moves relative to the base 21 along the second direction, the first deformation portion 2512 and the second deformation portion 2522 are suspended above the avoidance portion 223. The setting of the avoidance portion 223 provides movement space for the first deformation portion 2512 and the second deformation portion 2522.

[0086] In some embodiments, four first elastic connectors 251 are provided, and the four first elastic connectors 251 are arranged opposite to each other in pairs. The number of second elastic connectors 252 is also four, and a second elastic connector 252 is connected to the outer side of each first elastic connector 251. Correspondingly, the cross section of the driving device 20 perpendicular to the first direction is substantially square, and the four second elastic connectors 252 are respectively arranged at the four corners of the driving device 20. Optionally, the four second elastic connectors 252 can provide a symmetrical restoring force for the carrier 23.

[0087] Specifically, the base 21 includes a first base side portion 2111, a second base side portion 2112, a third base side portion 2113, and a fourth base side portion 2114 arranged in sequence. At a corner where the first base side portion 2111 is connected to the second base side portion 2112, a first first mounting portion 212 protruding upward in the first direction is provided. At a corner where the second base side portion 2112 is connected to the third base side portion 2113, a second first mounting portion 212 protruding upward in the first direction is provided. The third first mounting portion 212 and the fourth first mounting portion 212 are arranged in the same way and are respectively provided at the other two corners of the base 21.

[0088] As Figure 7 shown, the frame 22 includes a first frame side portion 2211, a second frame side portion 2212, a third frame side portion 2213, and a fourth frame side portion 2214 arranged in sequence. Among them, the first frame side portion 2211 is opposite to the first base side portion 2111. At both ends of the first frame side portion 2211, a second mounting portion 222 is respectively provided. At both ends of the third frame side portion 2213, a second mounting portion 222 is respectively provided. The second mounting portion 222 protrudes upward in the first direction relative to the surrounding adjacent portion of the frame 22, that is, at least a part of the circumferential side of the second mounting portion 222 forms an avoidance portion 223.

[0089] As Figure 8 shown, the carrier 23 includes a first carrier side portion 2311, a second carrier side portion 2312, a third carrier side portion 2313, and a fourth carrier side portion 2314 arranged in sequence. Among them, the first carrier side portion 2311 is opposite to the first frame side portion 2211. At a corner where the first carrier side portion 2311 is connected to the second carrier side portion 2312, a first third mounting portion 232 is provided. At a corner where the second carrier side portion 2312 is connected to the third carrier side portion 2313, a second third mounting portion 232 is provided. The third third mounting portion 232 and the fourth third mounting portion 232 are arranged in the same way and are respectively provided at the other two corners of the carrier 23.

[0090] In some embodiments, a first connection column for connecting the first elastic connecting member 251 is provided on the first mounting portion 212, a second connection column for connecting the first elastic connecting member 251 and the second elastic connecting member 252 is provided on the second mounting portion 222, and a third connection column for connecting the second elastic connecting member 252 is provided on the third mounting portion 232. Connection holes adapted for the insertion of the connection columns are respectively provided on the first elastic connecting member 251 and the second elastic connecting member 252. In some other embodiments, the first elastic connecting member 251 and the second elastic connecting member 252 can also be connected to the above-mentioned respective mounting portions by welding, bonding, or hot riveting, etc.

[0091] In some embodiments, the suspension assembly 25 includes a third elastic connector 253, one end of the third elastic connector 253 is connected to the carrier 23, and the other end is connected to the frame 22. Further, the driving device 20 is provided with a first elastic connector 251 and a second elastic connector 252 on one side along the first direction, and a third elastic connector 253 is provided on the other side, and the carrier 23 is clamped between the second elastic connector 252 and the third elastic connector 253, so that the carrier 23 is suspended in the frame 22. In some optional embodiments, the third elastic connector 253 can be used to reset the carrier 23. In some optional embodiments, the third elastic connector 253 is provided as one, which is provided around the carrier 23. In other words, the third elastic connector 253 can be an integrated structure.

[0092] In some embodiments, the carrier 23 is suitable for carrying the optical lens 10, the base 21 is suitable for being fixed to the photosensitive device 30, so that the driving device 20 is suitable for being fixed to the photosensitive device 30 through the base 21, and the driving device 20 has a light channel 201 suitable for light to pass through. Specifically, the first carrier side 2311, the second carrier side 2312, the third carrier side 2313, and the fourth carrier side 2314 surround to form a carrier through hole 2315; the first frame side 2211, the second frame side 2212, the third frame side 2213, and the fourth frame side 2214 surround to form a frame through hole 2215; the first base side 2111, the second base side 2112, the third base side 2113, and the fourth base side 2114 surround to form a base through hole 2115. The optical lens 10 can be accommodated in the carrier through hole 2315, the carrier 23 can be accommodated in the frame through hole 2215, the base through hole 2115 is located below the frame through hole 2215, and the photosensitive device 30 is arranged on the side of the driving device 20 away from the optical lens 10 in the first direction, that is, arranged below the base through hole 2115. The reflected light of the object can pass through the optical lens 10, the frame through hole 2215, and the base through hole 2115 in the carrier through hole 2315 in sequence to reach the photosensitive device 30. It is equivalent to that the carrier through hole 2315, the frame through hole 2215, and the base through hole 2115 cooperate to form the above-mentioned light channel 201. In some other embodiments, one or more of the base 21, the frame 22, and the carrier 23 can be set to other structures, which does not affect the formation of the light channel 201. For example, the carrier 23 can be set to a single-sided carrier 23, and the carrier 23 is only arranged on a part of the periphery of the frame 22 and is not blocked on the path of the imaging light. In other words, in some optional embodiments, at least one of the base 21, the frame 22, and the carrier 23 does not form a fully enclosed structure in the cross section perpendicular to the first direction, and its avoidance structure for light to pass through can be connected to the outside in the second direction, which is naturally not suitable to be called a through hole.

[0093] In some embodiments, reference Figure 4, Figure 6 , the driving assembly 24 includes a support assembly 26. The support assembly 26 includes a number of balls 261 clamped between the base 21 and the frame 22. By clamping the balls 261, when the frame 22 moves relative to the base 21, the balls 261 can slide or roll, which can reduce the friction contact area and reduce the frictional resistance of the frame 22 when it moves against the base 21. Specifically, the base 21 includes a first installation groove 2116, and the frame 22 includes a second installation groove perpendicular to the first installation groove 2116. The balls 261 are clamped between the first installation groove 2116 and the second installation groove. The installation method of the balls 261 is simple, and the extending directions of the first installation groove 2116 and the second installation groove are perpendicular to each other, which can respectively provide the carrier 23 with the freedom to slide in the direction parallel to the X-axis and in the direction parallel to the Y-axis. It can be understood that the term "a number of" here means that the number of balls 261 is greater than or equal to three, as long as each ball 261 can provide a support surface parallel to the XOY plane.

[0094] More specifically, in some alternative embodiments, three balls 261 are clamped between the base 21 and the frame 22. The three balls 261 are arranged on the base 211 of the base 21 at intervals of two. The surface of the base 211 facing the frame 22 is provided with three first installation grooves 2116, and the bottom surface of the frame 22 is provided with corresponding three second installation grooves. In another part of the alternative embodiments, a total of four pairs of installation grooves are provided on the base 21 and the frame 22.

[0095] In some embodiments, the first installation groove 2116 penetrates through the outer side wall of the base 21 along the length direction of the first installation groove 2116. Such a structural setting is conducive to providing a sufficient stroke range for the balls 261 when the size of the base 211 of the base 21 is small. For example, in some alternative embodiments, if the first installation groove 2116 extends in the Y-axis direction, then the first installation groove 2116 penetrating through the outer side wall of the base 21 along the length direction of the first installation groove 2116 means that one end of the first installation groove 2116 penetrates through the base 21 in the Y-axis direction. Then, when the required length of the first installation groove 2116 is certain, or when the sliding stroke of the frame 22 along the Y-axis is certain, the dimension of the base 21 extending in the direction parallel to the Y-axis can be reduced. Obviously, the first installation groove 2116 can also extend in the direction parallel to the X-axis.

[0096] Furthermore, the driving device 20 further includes a cover body 27. The cover body 27 can cooperate with the base 21. When the cover body 27 is buckled on the base 21, the inner wall of the cover body 27 can cover at least part of the outer side surface of the base 21, which can achieve the effect of preventing the balls 261 from coming out of the first installation groove 2116.

[0097] In some embodiments, a magnetic attraction assembly that interacts with each other is provided between the base 21 and the frame 22, so that the base 21 and the frame 22 can clamp the ball 261 therebetween, and thus the frame 22 can be supported on the base 21 through these balls 261. Specifically, the magnetic attraction assemblies can be provided in four groups at the four corners of the driving device 20 respectively, so that the frame 22 is supported in the base 21 in a balanced and stable manner. Each group of magnetic attraction assemblies includes at least one magnet and at least one magnetic attraction member 281 adapted to adsorb to the magnet. The magnet can be provided on the base 21 and the magnetic attraction member 281 can be provided on the frame 22, or the magnet can be provided on the frame 22 and the magnetic attraction member 281 can be provided on the base 21. The magnetic attraction member 281 can specifically be made of materials such as magnets or iron-cobalt-nickel. In some alternative embodiments, the magnetic attraction member 281 can be specifically provided on the base 21 by means of insert molding, bonding, welding, etc., and corresponding magnets are provided on the frame 22.

[0098] In some embodiments, the support assembly 26 can further include a component provided between the carrier 23 and the frame 22 for reducing the movement friction therebetween. In addition to being the balls 261, the support assembly 26 can also be a guide rod or a slider or other similar structures.

[0099] In some embodiments, the driving assembly 24 includes a magnet part 242, a base coil part 241 and a carrier coil part 243. The base coil part 241 is fixedly connected to the base 21, the magnet part 242 is fixedly connected to the frame 22, and the carrier coil part 243 is fixedly connected to the carrier 23. Among them, at least part of the magnet part 242 is disposed opposite to the base coil part 241, and the base coil part 241 can drive the magnet part 242 under the action of an electric current, so that the frame 22 moves relative to the base 21. At least part of the magnet part 242 is disposed opposite to the carrier coil part 243, and the carrier coil part 243 can move relative to the magnet part 242 under the action of an electric current, so that the carrier 23 moves relative to the frame 22. It can be understood that the magnet part 242 here can be used as the magnet that adsorbs to the magnetic attraction member 281 in the magnetic attraction assembly.

[0100] Specifically, the magnet portion 242 includes a first driving magnet 2421 and a second driving magnet 2422. The first driving magnet 2421 and the second driving magnet 2422 are respectively disposed on two adjacent side edges of the frame 22. Specifically, the first driving magnet 2421 may be disposed on the first frame side portion 2211, and the second driving magnet 2422 may be disposed on the second frame side portion 2212. The base coil portion 241 includes a first base coil 2411 and a second base coil 2412. The first base coil 2411 and the first driving magnet 2421 are disposed opposite to each other along a first direction, and the second base coil 2412 and the second driving magnet 2422 are disposed opposite to each other along the first direction. The cooperation between the first driving magnet 2421 and the first base coil 2411 enables the frame 22 to move along the X-axis direction, and the cooperation between the second driving magnet 2422 and the second base coil 2412 enables the frame 22 to move along the Y-axis direction. The carrier coil portion 243 includes a first carrier coil 2431. The first carrier coil 2431 and the first driving magnet 2421 or the second driving magnet 2422 are disposed opposite to each other along a second direction and are adapted to drive the carrier 23 to move along the first direction.

[0101] In some embodiments, the magnet portion 242 further includes a third driving magnet 2423 disposed on other side portions of the carrier 23. The second driving magnet 2422 and the third driving magnet 2423 may be respectively disposed on two sides of the first driving magnet 2421, that is, the third driving magnet 2423 may be disposed on the fourth frame side portion 2214. The base coil portion 241 further includes a third base coil 2413 disposed opposite to the third driving magnet 2423. The carrier coil portion 243 includes a first carrier coil 2431 disposed opposite to the second driving magnet 2422 and a second carrier coil 2432 disposed opposite to the third driving magnet 2423. The first carrier coil 2431 and the second carrier coil 2432 are respectively disposed on two opposite sides of the carrier 23 to apply forces from two opposite sides to enable the carrier 23 to move along the first direction. Obviously, the magnet portion 242 may also be provided with more or fewer driving magnets. For example, a fourth driving magnet is provided. Here, it is not excluded that the frame 22 has more or fewer side portions available for disposing driving magnets. For example, the frame 22 is a pentagon. Correspondingly, the base coil portion 241 and the carrier coil portion 243 may both include more or fewer coils.

[0102] Among them, the first base coil 2411 may be composed of one coil, or may be composed of two coils or more coils. The first driving magnet 2421 may be composed of a single magnet, or may be composed of two or more magnets. The same applies to other parts in the magnet portion 242, the base coil portion 241, and the carrier coil portion 243. For example, the second base coil 2412, the first carrier coil 2431, the second driving magnet 2422, etc. may each be an integral structure, or may be composed of two or more coils, or two or more magnets.

[0103] In some embodiments, the size of one side of the magnet part 242 facing away from the base coil part 241 is smaller than the size of the side close to the base coil part 241, and / or the size of one side of the magnet part 242 facing away from the carrier coil part 243 is smaller than the size of the side close to the carrier coil part 243. It can be understood that the magnet part 242 only needs to provide a magnetic field on one or both sides facing the coil. Therefore, reducing the size of one side of the magnet part 242 facing away from the base coil part 241 and / or the carrier coil part 243 helps to reduce the unnecessary magnet volume and save the space occupied by the magnet.

[0104] In some embodiments, the frame 22 is further provided with a magnetic conduction member 224 on one side of the magnet part 242 facing away from the base coil part 241 and / or the carrier coil part 243, which is used to increase the magnetic field lines of the magnet part 242 in the direction facing the carrier coil part 243 and / or the base coil part 241, and to constrain the magnetic field lines of the magnet part 242 in other directions.

[0105] In some embodiments, the size of one side of the magnet part 242 facing away from the base coil part 241 and / or the carrier coil part 243 is reduced, and it is coated with a magnetic conduction member 224. In some alternative embodiments, the size of one side of the first driving magnet 2421 facing the first base coil 2411 is larger than that of the opposite side, that is, the bottom size of the first driving magnet 2421 is larger than the top. Specifically, referring to Figure 9 , the cross-section of the first driving magnet 2421 in the direction parallel to the XOZ plane is convex-shaped, and the magnetic conduction member 224 is arranged on the top surface and two retracted side surfaces of the first driving magnet 2421. In some alternative embodiments, the size of one side of the second driving magnet 2422 facing the second base coil 2412 is larger than that of the opposite side, and the size of one side of the second driving magnet 2422 facing the first carrier coil 2431 is larger than that of the opposite side, that is, the bottom of the second driving magnet 2422 is larger than the top, and the inner size is larger than the outer size. Specifically, referring to Figure 10 , the cross-section of the second driving magnet 2422 in the direction parallel to the YOZ plane is L-shaped, and the magnetic conduction member 224 is coated on the top surface of the second driving magnet 2422 and the upper half of the inwardly concave outer side surface. The structure of the third driving magnet 2423 is the same as that of the second driving magnet 2422.

[0106] Among them, the magnetic conduction member 224 can be an integral structure that simultaneously coats each driving magnet, or the magnetic conduction member 224 is a split structure that is divided into multiple independent parts for different driving magnets. The magnetic conduction member 224 can be arranged on the frame 22 by means of bonding, welding, insert injection molding, etc.

[0107] In some embodiments, the driving device 20 further includes a position sensing component 29 communicatively connected to the driving component 24. The position sensing component 29 includes a first sensing module 291 capable of measuring the position change of the frame 22 relative to the base 21, and a second sensing module 292 capable of measuring the position change of the carrier 23 relative to the frame 22. It can sense the displacement state of the carrier 23 and the optical lens 10 thereon in the plane of the optical axis L direction and the direction perpendicular to the optical axis L, and form a closed-loop control for the movement of the carrier 23, thereby accelerating the focusing speed and improving the imaging quality.

[0108] Specifically, referring to Figure 9 、 Figure 10 The first sensing module 291 includes a first sensing magnet and a first sensing element 2911 for detecting the displacement change of the frame 22 relative to the base 21 in the Y-axis direction, and a second sensing magnet and a second sensing element 2912 for detecting the displacement change of the frame 22 relative to the base 21 in the X-axis direction. The first sensing magnet and the first sensing element 2911 are oppositely arranged in the first direction. One of the first sensing magnet and the first sensing element 2911 is arranged on the frame 22, and the other is arranged on the base 21 in the first direction. When the frame 22 moves along the Y-axis, the first sensing element 2911 can detect the magnetic field change. The second sensing magnet and the second sensing element 2912 are oppositely arranged in the first direction. One of the second sensing magnet and the second sensing element 2912 is arranged on the frame 22, and the other is arranged on the base 21. When the frame 22 moves along the X-axis, the second sensing element 2912 can detect the magnetic field change. Among them, the first sensing magnet can be formed by the first driving magnet 2421, the second sensing magnet can be formed by the second driving magnet 2422 or the third driving magnet 2423, and the first sensing element 2911 and the second sensing element 2912 are arranged on the base 21.

[0109] The second sensing module 292 includes a third sensing magnet 2921 and a third sensing element 2922 for detecting the movement change of the carrier 23 relative to the frame 22 in the Z-axis direction. The third sensing magnet 2921 and the third sensing element 2922 are oppositely arranged in the first direction. One of the third sensing magnet 2921 and the third sensing element 2922 is arranged on the carrier 23, and the other is arranged on the frame 22. When the carrier 23 moves along the Z-axis, the third sensing element 2922 can detect the magnetic field change. The first sensing element 2911, the second sensing element 2912, and the third sensing element 2922 are selected from one or more of components such as Hall elements, driver ICs, and TMRs that can sense magnetic fields. The first sensing element 2911, the second sensing element 2912, and the third sensing element 2922 can be arranged on the base 21, the frame 22, or the carrier 23 by means of welding, bonding, insert molding, etc.

[0110] In some embodiments, referring toFigure 11 , a conductive member 213 is provided on the base 21. The conductive member 213 can be disposed on the base 21 by means of bonding, welding, insert molding, etc., so as to realize electrical connection between different parts or different circuit components on the base 21. In a specific embodiment, the conductive member 213 includes a base circuit board 2131 disposed on the base portion 211 and a conductive insert 2132 embedded in the base 21. The conductive insert 2132 extends from the base portion 211 to the first mounting portion 212, and can be electrically connected to the first elastic connecting member 251 on the first mounting portion 212, and is connected to the carrier circuit board 233 on the carrier 23 through the first elastic connecting member 251 and the second elastic connecting member 252, so as to supply power to the circuit components on the frame 22 or the carrier 23, for example, supply power to the carrier 23 coil or the second sensing module 292.

[0111] The foregoing has described the basic principles, main features and advantages of the present application. Those skilled in the art of this industry should understand that the present application is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements, and these changes and improvements all fall within the scope of the present application claimed. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A driving device, characterized in that, Comprising: A base; A frame, movably arranged on the base; A carrier, movably arranged on the frame; A driving component, capable of driving the carrier to move relative to the frame, and driving the frame to move relative to the base; A suspension component, including a first elastic connecting member and a second elastic connecting member. One end of the first elastic connecting member is connected to the base, and the other end is connected to the frame. One end of the second elastic connecting member is connected to the frame, and the other end is connected to the carrier. Wherein, the first elastic connecting member includes a first deformation portion arranged between the base and the frame, and the second elastic connecting member includes a second deformation portion arranged between the frame and the carrier. The cross-sectional area of the first deformation portion is different from the cross-sectional area of the second deformation portion, so that the elastic coefficient of the first deformation portion is different from the elastic coefficient of the second deformation portion.

2. The drive device according to claim 1, characterized in that: The cross-sectional area of the first deformation portion is smaller than the cross-sectional area of the second deformation portion, so that the elastic coefficient of the first deformation portion is smaller than the elastic coefficient of the second deformation portion.

3. The drive device according to claim 1, characterized in that: The first elastic connecting member is provided with at least two. Each first elastic connecting member further includes a first outer fixing portion and a first inner fixing portion connected to both ends of the first deformation portion. One end of the first deformation portion is connected to the base through the first outer fixing portion, and the other end is connected to the frame through the first inner fixing portion. And the first deformation portion extends bendably from the first outer fixing portion to the first inner fixing portion; The second elastic connecting member is provided with at least two. Each second elastic connecting member further includes a second outer fixing portion and a second inner fixing portion connected to both ends of the second deformation portion. One end of the second deformation portion is connected to the frame through the second outer fixing portion, and the other end is connected to the carrier through the second inner fixing portion. And the second deformation portion extends bendably from the second outer fixing portion to the second inner fixing portion.

4. The drive device according to claim 3, characterized in that: The first elastic connecting member and the second elastic connecting member are separately arranged.

5. The drive device according to claim 1, characterized in that: The elasticity of the material of the first elastic connecting member is less than the elasticity of the material of the second elastic connecting member.

6. The drive device according to any one of claims 1-5, characterized in that: The driving component is capable of driving the carrier to move relative to the frame in a first direction, and capable of driving the frame to move relative to the base in a second direction perpendicular to the first direction. Along the second direction, at least a part of the base is arranged on one side of the frame, and the carrier is arranged on the other side of the frame. The first elastic connecting member and the second elastic connecting member are arranged on the same side of the driving device along the first direction.

7. The drive device according to claim 6, characterized in that: The first deformation portion is a strip structure that bends and extends between the base and the frame, and the second deformation portion is a strip structure that bends and extends between the frame and the carrier. The thickness of the first deformation portion is less than the thickness of the second deformation portion, and / or, the width of the first deformation portion is less than the width of the second deformation portion.

8. The drive device according to claim 6, characterized in that: The base includes a base portion extending in a plane perpendicular to the first direction, and a first mounting portion protruding in the first direction relative to the base portion. The frame includes a second mounting portion disposed opposite the first mounting portion in the second direction, and an avoidance portion recessed in the first direction relative to the second mounting portion. The carrier includes a third mounting portion disposed opposite the second mounting portion in the second direction. One end of the first elastic connecting member is connected to the first mounting portion, and the other end is connected to the second mounting portion. One end of the second elastic connecting member is connected to the second mounting portion, and the other end is connected to the third mounting portion. The first deformation portion and the second deformation portion are disposed on one side of the avoidance portion in the first direction.

9. The drive device according to claim 1, characterized in that: It further includes a support assembly. The support assembly includes a plurality of balls clamped between the base and the frame. The base includes a first mounting groove, and the frame includes a second mounting groove disposed perpendicular to the first mounting groove. The balls are clamped between the first mounting groove and the second mounting groove, and the first mounting groove penetrates the outer sidewall of the base along the length direction of the first mounting groove.

10. The drive device according to claim 1, characterized in that: The first elastic connecting member and the second elastic connecting member are both electrically conductive, and the first elastic connecting member and the second elastic connecting member are electrically connected to each other so that the base, the frame, and the carrier are electrically connected.

11. The drive device according to claim 1, characterized in that: The driving assembly includes a magnet portion, a base coil portion, and a carrier coil portion. The base coil portion is fixedly connected to the base, the magnet portion is fixedly connected to the frame, and the carrier coil portion is fixedly connected to the carrier. Wherein, at least part of the magnet portion is disposed opposite the base coil portion, and the base coil portion can drive the magnet portion under the action of current, so that the frame moves relative to the base. At least part of the magnet portion is disposed opposite the carrier coil portion, and the carrier coil portion can move relative to the magnet portion under the action of current, so that the carrier moves relative to the frame.

12. The drive device according to claim 11, characterized in that: The size of the side of the magnet portion facing away from the base coil portion is smaller than the size of the side close to the base coil portion, and / or the size of the side of the magnet portion facing away from the carrier coil portion is smaller than the size of the side close to the carrier coil portion.

13. The drive device according to claim 1 or 11, characterized in that: It further includes a position sensing assembly communicatively connected to the driving assembly. The position sensing assembly includes a first sensing module capable of measuring the position change of the frame relative to the base, and a second sensing module capable of measuring the position change of the carrier relative to the frame.

14. An imaging module, characterized in that, Comprising: A photosensitive device; An optical lens, the optical lens being held on the photosensitive path of the photosensitive device; And, A driving device as described in any one of claims 1 to 13, the driving device being capable of driving the optical lens to move relative to the photosensitive device.

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