Drive device, camera module and electronic equipment

Abstract

The embodiments of the present application provide a driving device, a camera module, and an electronic device, wherein the driving device provided by the present application is configured to include a driving component including at least one driving magnetic part, a power supply device, and at least one coil, electrically connecting the power supply device to the coil, placing the coil in the magnetic field of the driving magnetic part, and passing current through the coil to cause the coil to move under the action of the magnetic field, or to drive the magnetic part to move. In this way, the coil or the driving magnetic part can drive the motor carrier to move, thereby driving the lens of the camera module to move, thereby completing the zoom of the camera module. The driving device of the embodiment of the present application has a simple structure, which effectively reduces the difficulty of manufacturing and assembly, and the cost of each component is lower than that of a stepper motor, thereby reducing the manufacturing cost of the entire camera module.

Description

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on March 12, 2020, with application number 202010172570.4 and application name “A driving device, camera module and electronic device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the field of mobile terminal technology, and in particular to a driving device, a camera module, and an electronic device. Background Art

[0003] In recent years, camera and video recording capabilities have become essential features of handheld communication devices such as mobile phones, personal assistants, and laptops. As users' photography requirements for mobile devices like these increase, the combination of long-range and narrow-focus wide-angle shooting has become a popular standard feature of these devices. Mobile devices that meet these diverse shooting requirements require camera modules with optical zoom capabilities.

[0004] To achieve the optical zoom function of the camera module, the drive motor needs to cover an increasingly larger travel range. In related art, the camera module in a mobile terminal includes multiple parallel and spaced lenses and a drive device for driving the lens movement. The drive device includes a stepper motor and a ball screw threaded through the multiple lenses. The stepper motor is threaded onto the ball screw via an adapter. During operation, the stepper motor drives the ball screw to rotate, thereby driving the multiple lenses to move along the extension direction of the ball screw, achieving the module's optical zoom.

[0005] However, the stepper motor used to drive the lens movement is relatively expensive, and the ball screw requires high processing precision, which increases the difficulty of manufacturing the entire camera module. Summary of the Invention

[0006] The embodiments of the present application provide a driving device, a camera module, and an electronic device, which reduce the manufacturing cost and difficulty of the camera module and the electronic device.

[0007] An embodiment of the present application provides a driving device for driving the lens movement of a camera module, the driving device comprising:

[0008] At least one motor carrier and at least one driving assembly, each motor carrier being used to carry a lens, and each motor carrier being driven by one or more of the corresponding at least one driving assembly;

[0009] Each of the driving components includes at least one driving magnetic component, a power supply device and at least one coil, the power supply device is electrically connected to each of the coils, and each of the motor carriers is connected to the at least one coil or to the at least one driving magnetic component; the at least one coil and the at least one driving magnetic component are used to cooperate with each other when the at least one coil is energized to drive one of the motor carriers to move.

[0010] The driving device provided in the embodiment of the present application is configured to include a driving magnetic part, a coil and a power supply device, electrically connect the power supply device to the coil, place the coil in the magnetic field of the driving magnetic part, and pass current through the coil so that the coil moves under the action of the magnetic field, or the driving magnetic part moves under the action of the magnetic field. In this way, the coil or the driving magnetic part drives the motor carrier to move, thereby driving the lens of the camera module to move and completing the zoom of the camera module. In the driving device of the present application, since the moving stroke of the motor carrier is related to the length of the driving magnetic part, the long-stroke movement of the motor carrier can be achieved by extending the length of the driving magnetic part, thereby increasing the focal length adjustment range of the camera module and improving the user experience. In addition, the driving device has a simple structure, which effectively reduces the difficulty of manufacturing and assembly, and the cost of each component is lower than that of the stepper motor, thereby reducing the manufacturing cost of the entire camera module.

[0011] In a possible implementation, each of the drive assemblies further includes a magnetic shielding member, wherein the magnetic shielding member includes a first magnetic shielding portion and two second magnetic shielding portions;

[0012] The two second magnetic shielding parts are relatively arranged at the two ends of the first magnetic shielding part, and the first magnetic shielding part and the two second magnetic shielding parts enclose an installation space. The driving magnetic part is located in the installation space, and the driving magnetic part is fixed on the first magnetic shielding part. Each of the motor carriers is connected to at least one of the coils or the first magnetic shielding part.

[0013] By arranging the driving magnetic component in the installation space of the magnetic shielding component, not only the structural stability of the driving magnetic component in the driving device is improved, but also the magnetic field generated by the driving magnetic component is shielded, thereby preventing the magnetic field from interfering with the normal operation of other components of the driving device.

[0014] In a possible implementation, the magnetic shield further includes a third magnetic shielding portion;

[0015] The third magnetic shielding portion is arranged opposite to and parallel to the first magnetic shielding portion, and both ends of the third magnetic shielding portion are connected to the two second magnetic shielding portions;

[0016] The two ends of the driving magnetic part extend to the two second magnetic shielding parts respectively, and the coil is movably mounted on the third magnetic shielding part. Under the action of the magnetic field, the coil moves relative to the first magnetic shielding part along the extension direction of the third magnetic shielding part after being energized.

[0017] In an embodiment of the present application, a third magnetic shield is provided, and a coil is mounted on the third magnetic shield. At the same time, the two ends of the driving magnetic member are respectively extended to the two second magnetic shields. In this way, magnetic flux lines perpendicular to the coil are formed through the magnetization effect, and the coil is only induced by the magnetic field in the portion located between the first magnetic shield and the third magnetic shield. At the same time, the coil is electrically connected to a power supply device to form a circular current in the coil after energization. This current generates an Ampere force in a magnetic field perpendicular to the coil. In this way, when a motor carrier connected to the lens of the camera module is connected to the coil and the magnetic shield is fixed to a fixed component in the terminal, the Ampere force drives the motor carrier to move along the extension direction of the third magnetic shield after energization. Alternatively, when the motor carrier is connected to the first magnetic shield and the coil is fixed to a fixed component in the terminal, after the coil is energized, due to the action and reaction forces, the first magnetic shield drives the motor carrier to move along the extension direction of the third magnetic shield, thereby achieving movement of the lens and completing zooming of the camera module.

[0018] In a possible implementation, the driving device further includes a fixing seat;

[0019] The at least one motor carrier, the at least one driving component and the at least one lens are all arranged on the fixing seat.

[0020] In a possible implementation, each of the motor carriers is connected to the at least one coil in the corresponding one or more drive assemblies, and the at least one drive magnetic component is fixedly connected to the fixing seat.

[0021] In a possible implementation, each of the motor carriers is connected to the at least one coil in the corresponding one or more drive assemblies, and the magnetic shielding component and the at least one driving magnetic component are fixedly connected to the fixing seat.

[0022] In a possible implementation, the fixing seat includes at least one side wall, and at least a portion of the magnetic shield is fixed on the side wall of the fixing seat.

[0023] In a possible implementation, there are multiple motor carriers, and the multiple motor carriers are spaced apart along the extension direction of the third magnetic shielding portion; there are multiple lenses, and the multiple lenses are spaced apart along their own axial direction.

[0024] In a possible implementation, the at least one coil is multiple in number, and the multiple coils are spaced apart and sleeved on the third magnetic shielding portion;

[0025] A holder is formed on each of the motor carriers. A limiting hole is provided on the holder. The holder is mounted on the third magnetic shielding portion. The coil connected to the motor carrier is clamped in the limiting hole of the holder.

[0026] In one possible implementation, there are multiple driving magnetic parts, and the multiple driving magnetic parts are arranged in sequence along the extension direction of the first magnetic shielding part. At least one coil is provided on one side of each driving magnetic part, and the motor carrier is connected to the coil so that the coil drives the motor carrier to move after being energized.

[0027] In one possible implementation, each motor carrier is connected to a corresponding coil;

[0028] A holder is formed on each motor carrier, and a limiting hole is provided on the holder. The holder is mounted on the third magnetic shielding portion, and the coil is clamped in the limiting hole of the holder. In this way, when the coil is energized and moves along the third magnetic shielding portion, it can drive the motor carrier to reciprocate by pushing the side wall of the limiting hole, thereby realizing the movement of the lens. At the same time, it also simplifies the connection structure between the motor carrier and the coil, thereby improving the assembly efficiency between the motor carrier and the drive component.

[0029] In a possible implementation, there are multiple motor carriers, which are spaced apart along the extension direction of the third magnetic shielding portion; there are multiple lenses, which are spaced apart along their own axis directions; and each motor carrier is connected to a corresponding lens.

[0030] There are multiple coils, and the multiple coils are spaced apart and sleeved on the third magnetic shielding part. Each motor carrier is connected to the magnetic shielding part, or each motor carrier is respectively connected to the corresponding coil.

[0031] The embodiment of the present application realizes simultaneous driving of multiple motor carriers by arranging multiple coils on the third magnetic shielding part of the driving component, thereby reducing the number of driving components set while realizing the driving of multiple spaced motor carriers, simplifying the number of parts of the entire driving device, making the entire structure simpler and more compact, and improving the manufacturing and assembly efficiency of the driving device.

[0032] In one possible implementation, the coil is fixed on the fixed seat, the driving magnetic component is provided on the first magnetic shielding portion, and the driving magnetic component and the motor carrier are respectively located on both sides of the first magnetic shielding portion, and the motor carrier is connected to the first magnetic shielding portion, and the driving magnetic component is used to move after the coil is energized to drive the first magnetic shielding portion and the motor carrier to move.

[0033] In one possible implementation, the driving magnetic member includes a first portion and a second portion arranged along an extension direction, the first portion and the second portion have opposite magnetic properties, and the coil is located on a side of the driving magnetic member away from the first magnetic shielding portion;

[0034] The axial direction of the coil is perpendicular to the extension direction of the driving magnetic part, and a part of the coil is located on one side of the first part, and the other part of the coil is located on one side of the second part. Under the action of the magnetic field, the energized coil moves relative to the first magnetic shielding part along the extension direction of the driving magnetic part, and the extension direction of the driving magnetic part is consistent with the specified direction.

[0035] In the embodiment of the present application, the two portions of the driving magnetic member along the extension direction are arranged to have opposite magnetic properties, and the two portions of the coil arranged along the extension direction of the driving magnetic member are arranged on one side of the first portion and the second portion, respectively. In this way, by energizing the coil, the coil is moved along the extension direction of the driving magnetic member under the action of the magnetic field, thereby ensuring that the portion fixed to the coil or the first magnetic shield can drive the motor carrier to move along the specified direction, thereby driving the lens. In the embodiment of the present application, the travel range of the motor carrier can be changed by adjusting the extension length of the first and second portions of the driving magnetic member. The structure is simple and easy to assemble and operate.

[0036] In a possible implementation, the driving magnetic member further includes a fourth magnetic shielding portion;

[0037] The two ends of the fourth magnetic shielding part along the extension direction are respectively connected to the two second magnetic shielding parts, the first magnetic shielding part is connected to one side of the fourth magnetic shielding part, the first magnetic shielding part, the two second magnetic shielding parts and the fourth magnetic shielding part together enclose an installation space, and the coil and the driving magnetic part are both arranged on the fourth magnetic shielding part.

[0038] The provision of the fourth magnetic shielding portion not only further serves to isolate the magnetic field, but also improves the structural stability of the driving magnetic component and the coil in the driving device.

[0039] In one possible implementation, there are multiple motor carriers, which are spaced apart along the extension direction of the first magnetic shielding portion; there are multiple lenses, which are spaced apart along the extension direction of the first magnetic shielding portion; and each motor carrier is connected to a corresponding lens.

[0040] There are multiple driving magnetic parts, which are arranged in sequence along the extension direction of the first magnetic shielding part. A coil is provided on one side of each driving magnetic part, and each motor carrier is connected to the magnetic shielding part, or each motor carrier is connected to the corresponding coil.

[0041] The embodiment of the present application realizes the simultaneous driving of multiple motor carriers by arranging multiple coils in the driving magnetic part of the driving component, thereby reducing the number of driving components set while realizing the driving of multiple spaced motor carriers, simplifying the number of parts of the entire driving device, making the entire structure simpler and more compact, and improving the manufacturing and assembly efficiency of the driving device.

[0042] In one possible implementation, the driving device also includes a fixing seat, and the motor carrier, driving assembly and lens are all arranged on the fixing seat to improve the assembly stability of the driving device and the lens, while also making the camera module structure formed by the entire driving device and the lens more compact.

[0043] In a possible implementation, the motor carrier is connected to the coil, and the magnetic shield is connected to the fixing seat.

[0044] By attaching the magnetic shield to the mounting base to stabilize the magnetic shield, and attaching the motor carrier to the coil, the coil, when energized, stably moves along the extension direction of the first magnetic shield under the influence of the magnetic field, thereby driving the motor carrier to stably move in a direction parallel to the first magnetic shield. Furthermore, by attaching the magnetic shield of the drive assembly to the mounting base, the drive device can be assembled into an electronic device simply by securing the mounting base within the electronic device. This improves assembly efficiency within the electronic device and also makes the overall structure of the drive device more compact.

[0045] In one possible implementation, the power supply device is connected to the motor carrier so that the power supply device can move with the movement of the motor carrier, thereby forming a stable and controllable current in the coil fixed on the motor carrier, generating a stable driving force for the coil, and thus achieving stable driving of the motor carrier.

[0046] In one possible implementation, the power supply device includes a flexible circuit board;

[0047] The flexible circuit board includes a fixed part and a movable part connected to the fixed part, the fixed part is connected to the fixing seat, one end of the movable part is connected to the motor carrier, and at least part of the movable part extends along the moving direction of the motor carrier.

[0048] By connecting one end of the flexible printed circuit board's movable portion to the motor carrier, the motor carrier drives the movable portion to move stably, achieving stable power supply to the coil. Simultaneously, the movable portion is connected to the mounting base via the fixed portion, ensuring stable current and signal transmission between the flexible printed circuit board and the main control board outside the mounting base, further ensuring stable current input to the coil.

[0049] In one possible implementation, the end of the movable portion connected to the motor carrier is configured as an arc segment. The arc structure transitions the movable portion to the motor carrier to prevent the end of the flexible circuit board connected to the motor carrier from being damaged and affecting the current input to the coil.

[0050] In one possible implementation, a reinforcement piece is provided at one end of the movable part, and the movable part is connected to the motor carrier through the reinforcement piece to enhance the connection strength between the flexible circuit board and the motor carrier, thereby improving the reliability of the movable part of the flexible circuit board moving with the motor carrier.

[0051] In one possible implementation, the flexible circuit board also includes a transition portion, and the fixed portion and the movable portion are connected by the transition portion so that the entire movable portion can extend along the moving direction of the motor carrier, thereby extending the moving stroke of the movable portion driven by the motor carrier in a direction parallel to the second magnetic shielding portion, ensuring that the stability of the fixed portion is not affected when the motor carrier drives the movable portion to move along the motion direction.

[0052] In one possible implementation, the driving device further includes a position detection device;

[0053] The position detection device includes a Hall element and a sensing magnetic part. The Hall element is arranged on the motor carrier, and the sensing magnetic part is arranged on the fixing seat. The Hall element and the power supply device are both connected to the processor signal of the camera module.

[0054] The Hall element is used to detect the magnetic field strength of the sensing magnetic part, so that when the Hall element detects that the magnetic field strength of the sensing magnetic part reaches a preset threshold, it sends a signal to the processor, and the processor controls the power supply device to stop supplying power to the coil according to the signal.

[0055] By configuring the Hall effect element and the magnetic sensing element, the motor carrier's motion position can be detected and controlled, thereby achieving closed-loop control of the motor carrier. Furthermore, by securing the Hall effect element to the motor carrier, the power supply device located on the motor carrier provides stable power to the Hall effect element, ensuring its proper operation.

[0056] In a possible implementation, the motor carrier is connected to the first magnetic shielding portion, and the coil is connected to the fixing seat; and an escape channel for the magnetic shielding member to move is provided in the fixing seat.

[0057] By connecting the coil to a fixed seat to ensure the stability of the coil, the motor carrier is connected to the first magnetic shielding part. In this way, the coil after being energized will generate an Ampere force parallel to the first magnetic shielding part under the action of the magnetic field. Due to the action force and reaction force, the Ampere force drives the magnetic shielding part to move stably in the avoidance channel along the extension direction of the first magnetic shielding part, thereby driving the motor carrier to move stably in the direction parallel to the first magnetic shielding part.

[0058] In one possible implementation, a power supply device is connected to a fixed base to provide stable power to the coil mounted on the fixed base, ensuring stable reciprocating motion of the magnetic shield through the coil. Furthermore, connecting the power supply device to the fixed base simplifies the structure of the motor carrier, improving the assembly efficiency of the drive device and reducing the weight of the motor carrier, thereby enabling the magnetic shield to effectively drive the motor carrier.

[0059] In one possible implementation, the driving device further includes a position detection device;

[0060] The position detection device includes a Hall element and a sensing magnetic part. The Hall element is arranged on a fixed seat, and the sensing magnetic part is arranged on a motor carrier. The Hall element and the power supply device are both connected to the processor signal of the camera module.

[0061] The Hall element is used to detect the magnetic field strength of the sensing magnetic part, so that when the Hall element detects that the magnetic field strength of the sensing magnetic part reaches a preset threshold, it sends a signal to the processor, so that the processor controls the power supply device to stop supplying power to the coil.

[0062] The arrangement of the Hall element and the magnetic sensing element enables detection and control of the motor carrier's motion position, thereby achieving closed-loop control of the motor carrier. Furthermore, by securing the Hall element to a fixed base, the power supply device located therein provides stable power to the Hall element, ensuring its proper operation. Furthermore, placing both the Hall element and the power supply device on the fixed base further simplifies the assembly structure of the motor carrier and makes the overall drive device's structural layout more rational and compact.

[0063] In a possible implementation, the motor carrier includes two carrier parts arranged opposite to each other, and the two carrier parts are respectively used to connect with two lens connecting parts located on both sides of the axis of the lens;

[0064] There are at least two driving assemblies, and the at least two driving assemblies are respectively connected to two opposite carrier parts to drive the two carrier parts to move, thereby driving the lens to move.

[0065] By configuring the motor carrier to include two opposing carrier sections, each connected to either side of the lens axis, the lens is stably secured to the motor carrier. During operation, two drive assemblies independently drive the two carrier sections, achieving stable drive of the lens and ensuring stable movement along the movement directions of the two carrier sections, enabling long-stroke zooming.

[0066] In a possible implementation, among the multiple motor carriers,

[0067] Each carrier part on the same side is connected to the corresponding coil in the driving assembly, and the first magnetic shielding part in the driving assembly is connected to the fixing seat. In this way, after each coil is energized, multiple carrier parts on the same side can be driven simultaneously.

[0068] Alternatively, each carrier portion located on the same side is connected to the first magnetic shielding portion in the driving assembly, and all coils of the driving assembly are connected to the fixed seat. In this way, after the coil is energized, it will generate an Ampere force parallel to the extension direction of the first magnetic shielding portion under the action of the magnetic field. According to the action force and reaction force, the first magnetic shielding portion in the driving assembly drives the multiple carrier portions located on the same side to move along the extension direction of the first magnetic shielding portion, thereby realizing simultaneous driving of multiple motor carriers, reducing the number of driving components, and simplifying the structure and assembly process of the entire driving device.

[0069] In one possible implementation, two first guide rails are arranged side by side in the fixed seat, and the two carrier parts are respectively mounted on the corresponding first guide rails, and each carrier part moves along the corresponding first guide rail under the drive of the driving assembly, so that the carrier part moves in a straight line under the support of the first guide rail, thereby ensuring stable zoom of the lens.

[0070] In one possible implementation, the camera module includes two second guide rails correspondingly disposed on a side of the two first guide rails away from a bottom of the fixing base, and the second guide rails are disposed parallel to the first guide rails. Two lens connecting portions are respectively sleeved on the second guide rails, and each lens connecting portion moves along the corresponding second guide rail under the drive of the carrier portion.

[0071] A buffer device is provided between each carrier part and the lens connecting part to absorb the parallelism tolerance of the first guide rail and the second guide rail arranged above and below, to prevent the carrier part and the lens from being stuck due to close contact during movement, and to facilitate the mutual decoupling of the lens and the motor carrier.

[0072] In a possible implementation, the buffer device is a spring leaf, so as to simplify the structure of the buffer device and improve the assembly efficiency of the driving device.

[0073] In a possible implementation, the motor carrier further includes a supporting portion;

[0074] The two ends of the support portion are connected to two opposing carrier portions, and the support portion is used to support the lens. The provision of the support portion increases the contact area between the lens and the motor carrier, thereby improving the stability of the lens on the motor carrier and ensuring that the motor carrier stably drives the lens.

[0075] In one possible implementation, at least a portion of the side surface of each carrier portion facing the lens is configured as a curved surface that matches the shape of the lens sidewall. This improves the fit between the lens sidewall and the carrier portion's sidewall, reduces the assembly gap between the lens and the motor carrier, and makes the assembled drive device more compact. Furthermore, this arrangement prevents damage to the lens from the carrier portion's sidewall facing the lens during assembly of the lens and motor carrier.

[0076] The embodiment of the present application further provides a camera module, comprising at least one lens and the above driving device;

[0077] The driving assembly of the driving device is connected to the lens through a motor carrier to drive the lens to move in a specified direction.

[0078] The present application sets the above-mentioned driving device in the camera module to drive the lens to move in a specified direction, which not only realizes the long-stroke zoom process of the lens, but also the driving device has a simple structure, effectively reducing the difficulty of manufacturing and assembling the entire camera module. In addition, the cost of each component is lower than that of a stepper motor, thereby reducing the manufacturing cost of the entire camera module.

[0079] An embodiment of the present application also provides an electronic device, including a housing and the camera module as described above, wherein the camera module is arranged on the housing.

[0080] By setting the above-mentioned camera module in an electronic device, the present application not only realizes the long-stroke zoom of the camera module of the electronic device, ensuring that the electronic device can realize the functions of long-range shooting with a large focal length and wide-angle shooting with a small focal length, but also simplifies the structure of the electronic device, reduces the difficulty of manufacturing and assembly, and the cost of each component is lower than that of a stepper motor, thereby reducing the manufacturing cost of the entire electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] Figure 1 It is a structural diagram of the mobile terminal of the present application;

[0082] Figure 2 yes Figure 1 Cross-section along line AA;

[0083] Figure 3 yes Figure 2 A schematic diagram of a first structure of the middle drive device;

[0084] Figure 4 yes Figure 3 Schematic diagram of part of the structure;

[0085] Figure 5 yes Figure 3 Schematic diagram of the structure of the middle drive component;

[0086] Figure 6 yes Figure 5 Middle section along line BB;

[0087] Figure 7 yes Figure 3 A top view of

[0088] Figure 8 yes Figure 3 Assembly drawing of the drive device and lens;

[0089] Figure 9 yes Figure 7 Middle section along CC line;

[0090] Figure 10 yes Figure 3 A partial schematic diagram of the internal structure;

[0091] Figure 11 yes Figure 10 A top view of the power supply device;

[0092] Figure 12 yes Figure 10 The main view of the power supply device;

[0093] Figure 13 yes Figure 2 A second structural diagram of the middle drive device;

[0094] Figure 14 yes Figure 13 Schematic diagram of the split structure of the middle part drive device;

[0095] Figure 15 yes Figure 14 The main view;

[0096] Figure 16 yes Figure 2 A third structural diagram of the middle drive device;

[0097] Figure 17 yes Figure 16 Partial cross-section along line DD.

[0098] Description of reference numerals:

[0099] 10-housing; 20-camera module;

[0100] 11-light-transmitting area; 21-lens; 22-drive device; 23-main control board; 24-second guide rail;

[0101] 211 - lens connection portion; 212 - lens main body; 221 - motor carrier; 222 - drive assembly; 223 - fixing seat; 224 - position detection device; 225 - first guide rail; 226 - buffer device;

[0102] 2211 - Carrier; 2212 - Support; 2213 - Socket; 2214 - Mounting Plate; 2215 - Mounting Position; 2221 - Driving Magnetic Component; 2222 - Magnetic Shield; 2223 - Power Supply; 2224 - Coil; 2231 - Sub-Fixer; 2232 - Reinforcement Base; 2233 - Light Avoidance; 2234 - Mounting Base; 2241 - Hall Effect Element; 2242 - Sensing Magnetic Component;

[0103] 2211a-arc-shaped surface; 2221a-first part; 2221b-second part; 2222a-first magnetic shielding part; 2222c-second magnetic shielding part; 2222b-third magnetic shielding part; 2222d-fourth magnetic shielding part; 2223a-fixed part; 2223b-movable part; 2223c-arc-shaped section; 2223d-reinforcement part; 2223e-transition part; 2223f-electrical connection end; 2231a-avoidance channel; 2224a-left half; 2224b-right half. DETAILED DESCRIPTION

[0104] The terms used in the implementation section of this application are only used to explain the specific embodiments of this application and are not intended to limit this application.

[0105] Camera functionality has gradually become a fundamental feature of handheld communication devices such as mobile phones, personal assistants, and laptops. As users' photography requirements for mobile devices like phones increase, traditional camera systems are no longer sufficient. The complementary capabilities of periscope camera modules for long-range photography and conventional CCM modules for narrower focal length wide-angle photography have become a popular standard feature of mobile devices. These optical zoom camera modules are the type of camera modules that meet these requirements.

[0106] Figure 1 It is a structural diagram of the mobile terminal of the present application; Figure 2 yes Figure 1 Cross-section along line AA. Figure 1 and Figure 2 As shown, taking a mobile phone as an example, the camera module in the mobile terminal of this application is explained. Figure 1 and Figure 2As shown, a camera module 20 is provided on the housing 10 of the mobile phone. The camera module 20 includes a plurality of lenses 21 spaced apart along the axis of the light-transmitting area 11 on the housing 10, toward the interior of the housing 10. The lenses 21 are connected to a drive device 22, which is in signal communication with a main control board 23. The main control board 23 controls the drive device 22, causing it to move the lenses 21 toward or away from the light-transmitting area 11 on the housing 10, thereby achieving zooming of the camera module, satisfying user requirements for both long-range and short-range photography.

[0107] To achieve a wide range of optical zoom in camera module 20, drive device 22 must be capable of driving lenses 21 over a long range of motion. In related art, drive device 22 comprises a stepper motor and a ball screw threaded through multiple lenses 21. The stepper motor is threadedly connected to the ball screw via an adapter. During operation, the stepper motor drives the ball screw to rotate, thereby moving the multiple lenses 21 along the extension direction of the ball screw, achieving optical zoom in camera module 20.

[0108] However, the stepper motor for driving the lens 21 to move is relatively expensive, and the ball screw requires high processing precision, thereby increasing the difficulty of manufacturing the entire camera module 20.

[0109] The embodiment of the present application provides a driving device, a camera module and an electronic device. The driving component in the driving device is set to include a driving magnetic part, a coil and a power supply device, the power supply device is electrically connected to the coil, and the coil is placed in the magnetic field of the driving magnetic part. By passing current through the coil, the coil is moved along a path parallel to a specified direction relative to the driving magnetic part under the action of the magnetic field. In this way, by connecting the motor carrier to the coil or the driving magnetic part, the motor carrier connected to the coil or the driving magnetic part moves along a path parallel to the specified direction, thereby driving the lens of the camera module to move along the specified direction to complete the zoom of the camera module. In the driving device of the present application, since the moving stroke of the motor carrier is related to the length of the driving magnetic part, the long-stroke movement of the motor carrier can be achieved by extending the length of the driving magnetic part, thereby increasing the focal length adjustment range of the camera module and improving the user experience. In addition, the driving device has a simple structure, which effectively reduces the difficulty of manufacturing and assembly, and the cost of each component is lower than that of a stepper motor, thereby reducing the manufacturing cost of the entire camera module.

[0110] By using a specially structured drive assembly to drive the motor carrier connected to the lens, not only can long-stroke zooming of the lens be achieved, but it also reduces the difficulty of manufacturing and assembling the drive device. The cost of each component is lower than that of a stepper motor, thereby reducing the production cost of the entire camera module. The following describes the drive device of the present application in detail through three different embodiments.

[0111] Example 1

[0112] Figure 3 yes Figure 2 Schematic diagram of the first structure of the drive device, Figure 4 yes Figure 3 Schematic diagram of part of the structure; Figure 5 yes Figure 3 Schematic diagram of the drive assembly. Figure 3 As shown, the embodiment of the present application provides a driving device 22, which may include at least one motor carrier 221 and at least one driving assembly 222. Each motor carrier 221 is connected to a corresponding lens 21 in the camera module 20, and the driving assembly 222 is used to drive the motor carrier 221 along the central axis l of the lens 21 (see FIG. Figure 2 ) direction, thereby driving the lens 21 along the specified direction (such as Figure 4 The lens 21 is moved in the x direction to achieve zooming.

[0113] It should be noted that, in the embodiment of the present application, multiple drive assemblies 222 can simultaneously drive one motor carrier 221, or one drive assembly 222 can drive one motor carrier 221. In other words, it can be considered that each motor carrier 221 corresponds to one or more drive assemblies 222, and each motor carrier 221 is driven by the corresponding drive assembly 222. Alternatively, one or more drive assemblies 222 also correspond to one motor carrier 221, and one or more drive assemblies 222 are used to drive the corresponding motor carrier 221.

[0114] Reference Figure 3 As shown, in actual application, the camera module 20 includes a plurality of coaxial and sequentially spaced lenses 21, that is, the plurality of lenses 21 are spaced along their own axis direction. In order to realize the long-stroke movement of the plurality of lenses 21, this embodiment can move along the central axis l of the lens 21 (see Figure 2 ) direction sequentially arranges a plurality of motor carriers 221 at intervals, such as Figure 3 As shown, each motor carrier 221 is connected to a corresponding lens 21 , so that the driving device 22 can stably drive multiple lenses 21 at the same time.

[0115] Of course, the embodiment of the present application does not exclude the possibility that when the camera module 20 has a lens 21 , the driving device 22 includes a structure of a motor carrier 221 .

[0116] It can be understood that the above-specified direction is consistent with the extending direction of the central axis 1 of the lens 21.

[0117] Reference Figure 4 and Figure 5 As shown, a driving assembly 222 may include at least one driving magnetic component 2221, a power supply 2223, and at least one coil 2224. The driving magnetic component 2221 may be a component with a magnetic field such as a magnet, and the power supply 2223 is a device that provides an electrical signal to the coil 2224.

[0118] In the present application, when there are multiple drive components 222, the drive components 222 can share a power supply device 2223 or a drive magnetic component 2221. For example, a power supply device 2223 supplies power to the coils 2224 in multiple drive components 222. Of course, each drive component 222 can also use an independent power supply device 2223. Similarly, the drive magnetic component 2221 can also be shared between the drive components 222. For example, when there are two drive components 222 and each drive component 222 includes a coil 2224, then these coils 2224 can share a drive magnetic component 2224 (such as Figure 4 Of course, a driving magnetic member 2224 can also be configured for each of the two coils 2224 (such as Figure 14 example shown).

[0119] Each of the motor carriers 221 is connected to the at least one coil 2224 in the corresponding one or more driving components 222 , and at least one driving magnetic component 2221 is fixedly connected to the fixing seat 223 .

[0120] In this application, an example of a power supply device 2223 supplying power to a driving component 222 is used for description.

[0121] Reference Figure 5 As shown, the power supply device 2223 is electrically connected to each coil 2224 to supply power to each coil 2224, thereby generating a stable circular current in each coil 2224. Specifically, the power supply device 2223 may include a flexible circuit board, one end of which is electrically connected to the coil 2224, and the other end is electrically connected to the main control board 23 of the camera module 20. The main control board 23 is electrically connected to the battery of the electronic device. The battery transmits current to the coil 2224 through the main control board 23 and the flexible circuit board. At the same time, the main control board 23 can control power supply parameters such as power supply time to transmit a stable and controllable current to the coil 2224.

[0122] Figure 6 yes Figure 5 Cross-section along line BB. Figure 5 and Figure 6 As shown, each coil 2224 of the embodiment of the present application is located in the magnetic field of the driving magnetic part 2221. Under the action of the magnetic field, a current will be generated in the coil 2224 after being energized. Under the action of the magnetic field, the current can form an Ampere force parallel to the central axis l of the lens 21. Under the action of the Ampere force, the coil 2224 moves relative to the driving magnetic part 2221 on a path parallel to the specified direction.

[0123] It can be understood that the cross-sectional shape of the coil 2224 can be of any structure, as long as the coil 2224 has an Ampere force in the specified direction (including the Ampere force component in the specified direction) after being energized. In this way, the movement of the coil 2224 in directions other than the specified direction can be restricted so that the coil 2224 moves only in a path parallel to the specified direction relative to the driving magnetic part 2221.

[0124] For example, a limiting portion (not shown) may be provided in the camera module 20 to limit the movement of the coil 2224 in directions other than the designated direction. For example, the limiting portion may be a fixed plate, which is positioned in a direction where the coil 2224 has a certain angle with the designated direction, so that the coil 2224 can only move in the designated direction. The embodiments of the present application do not specifically limit the structure of the limiting portion.

[0125] It should be noted that the principle of generating Ampere force can be directly referred to the relevant content in traditional technology and will not be repeated here.

[0126] Reference Figure 4 As shown in the embodiment of the present application, each motor carrier 221 is connected to a corresponding coil 2224. Under the action of the magnetic field, the energized coil 2224 drives the motor carrier 221 along the direction of the central axis l of the lens 21 (as shown in FIG. Figure 4 The lens 21 is moved in the specified direction to achieve the zoom function.

[0127] Taking a coil 2224 and a motor carrier 221 as an example, the driving magnetic element 2221 can be connected to a fixed component in the camera module 20 or the mobile phone to ensure that the driving magnetic element 2221 is fixed and the coil 2224 is connected to the motor carrier 221. In this way, when energized, the coil 2224 will move in the x-direction under the action of the magnetic field, driving the motor carrier 221 to move in the x-direction, thereby achieving stable movement of the lens 21 connected to the motor carrier 221 and realizing a long-stroke zoom function.

[0128] In the embodiment of the present application, there are multiple ways to connect the motor carrier 221 and the coil 2224. For example, the motor carrier 221 and the coil 2224 can be connected by fixing methods such as bonding, clamping or screw connection.

[0129] Of course, refer to Figure 4 As will be described below, a retaining seat 2213 can be formed on the motor carrier 221, with a limiting hole defined therein. The retaining seat 2213 is mounted on the third magnetic shielding portion 2222b, and the coil 2224 sleeved on the third magnetic shielding portion 2222b is retained within the limiting hole of the retaining seat 2213. Thus, when the coil 2224 is energized and moves on the third magnetic shielding portion 2222b, it can drive the motor carrier 221 to move synchronously via the retaining seat 2213. The embodiment of the present application does not specifically limit the connection method between the motor carrier 221 and the coil 2224.

[0130] In which, the direction of the Ampere force exerted on the coil 2224 can be parallel to the extension direction of the driving magnetic component 2221, so that the extension direction of the driving magnetic component 2221 is consistent with the direction of the central axis l of the lens 21 (that is, the specified direction). In this way, the coil 2224 after being energized can drive the motor carrier 221 to move along the extension direction of the driving magnetic component 2221, thereby causing the lens 21 connected to the motor carrier 221 to move along the specified direction.

[0131] It can be understood that since the coil 2224 generates the Ampere force due to the magnetic field of the driving magnetic part 2221, in the driving device of the present application, the moving stroke of the motor carrier 221 is related to the length of the driving magnetic part 2221. Therefore, the long-stroke movement of the motor carrier 221 can be achieved by extending the length of the driving magnetic part 2221, thereby increasing the focal length adjustment range of the camera module 20 and improving the user experience. In addition, the driving device 22 has a simple structure, which effectively reduces the difficulty of manufacturing and assembly, and the cost of each component is lower than that of the stepper motor, thereby reducing the manufacturing cost of the entire camera module 20.

[0132] Continue to refer to Figure 5 As shown, the drive component 222 can also include a magnetic shielding member 2222, each magnetic shielding member 2222 includes a first magnetic shielding portion 2222a and two second magnetic shielding portions 2222c, the two second magnetic shielding portions 2222c are relatively arranged at both ends of the first magnetic shielding portion 2222a, the first magnetic shielding portion 2222a and the two second magnetic shielding portions 2222c enclose an installation space for the magnetic shielding member 2222, the driving magnetic member 2221 is located in the installation space, and the driving magnetic member 2221 is fixed on the first magnetic shielding portion 2222a, and the motor carrier 221 can be connected to the coil 2224.

[0133] The extension direction of the first magnetic shielding portion 2222a is consistent with the above-mentioned specified direction. In this way, the coil 2224 after being energized can drive the motor carrier 221 along the extension direction of the first magnetic shielding portion 2222a (refer to Figure 5 The lens 21 connected to the motor carrier 221 moves along the specified direction.

[0134] In the embodiment of the present application, the extending direction of the first magnetic shielding portion 2222 a is consistent with the central axis direction of the lens 21 .

[0135] In specific settings, the first magnetic shielding portion 2222a and the second magnetic shielding portion 2222c can be plate-like parts with magnetic shielding function, and the plate-like parts can be made of soft magnetic materials such as Permalloy or iron-aluminum alloy to avoid the magnetic field generated by the driving magnetic part 2221 from interfering with the components outside the magnetic shielding part 2221, and also prevent the magnetic field in the external environment from interfering with the magnetic field generated by the driving magnetic part 2221.

[0136] Continue to refer to Figure 5 As shown, in order to further improve the magnetic shielding effect of the magnetic shielding member 2222, in some examples, the driving magnetic member 2221 may also include a third magnetic shielding portion 2222b arranged opposite to and parallel to the first magnetic shielding portion 2222a, and the two ends of the third magnetic shielding portion 2222b are connected to the two second magnetic shielding portions 2222c, so that the magnetic shielding member 2222 forms a stable annular structure. In this way, the structural stability of the magnetic shielding member 2222 is improved. In addition, the closed magnetic shielding member 2222 further plays a role in isolating the magnetic field.

[0137] Reference Figure 5 As shown, in order to improve the stability of the third magnetic shielding part 2222b, the third magnetic shielding part 2222b has a bending part extending from both ends along the length direction toward the inner surfaces of the two second magnetic shielding parts 2222c, and the bending part is in close contact with the inner surfaces of the two second magnetic shielding parts 2222c, thereby increasing the contact area between the two ends of the third magnetic shielding part 2222b and the two second magnetic shielding parts 2222c, improving the connection strength between the third magnetic shielding part 2222b and the two second magnetic shielding parts 2222c, and thereby improving the structural stability of the entire magnetic shielding part 2222.

[0138] In some examples, in order to simplify the structure of the magnetic shielding member 2222, the first magnetic shielding portion 2222a, the third magnetic shielding portion 2222b, and the two second magnetic shielding portions 2222c of the magnetic shielding member 2222 are integrally formed as an integral part. This not only improves the assembly efficiency of the magnetic shielding member 2222, but also enhances the structural strength of the magnetic shielding member 2222.

[0139] In an embodiment of the present application, the two ends of the driving magnetic part 2221 extend to the two ends of the first magnetic shielding part 2222a along the extension direction respectively, and the coil 2224 is movably mounted on the third magnetic shielding part 2222b, so that the coil 2224 can be affected by the magnetic lines of force perpendicular to the driving magnetic part 2221 at any position in the length direction of the third magnetic shielding part 2222b.

[0140] like Figure 6 As shown, the direction indicated by arrow b is the direction in which the magnetic flux lines generated by the driving magnetic member 2221 act on the coil 2224. In this embodiment, the driving magnetic member 2221 may be a magnet provided along the extending direction of the first magnetic shielding portion 2222a.

[0141] During specific assembly, the two ends of the driving magnetic part 2221 can also be respectively connected to the two second magnetic shielding parts 2222c to improve the stability of the driving magnetic part 2221 in the magnetic shielding part 2222, and further ensure that the magnetic field generated by the driving magnetic part 2221 is stably perpendicular to the side of the coil 2224 toward the driving magnetic part 2221.

[0142] It is understandable that, because the side of the coil 2224 away from the driving magnetic component 2221 is located outside the magnetic shielding component 2222 , the side of the coil 2224 away from the driving magnetic component 2221 will not be affected by the magnetic field generated by the magnetic shielding component 2222 .

[0143] The coil 2224 of the embodiment of the present application is sleeved on the third magnetic shielding portion 2222b, and the first magnetic shielding portion 2222a and the third magnetic shielding portion 2222b are arranged relative to and in parallel. In this way, at least the portion of the coil 2224 located inside the magnetic shielding member 2222 will be perpendicular to the magnetic flux lines of the driving magnetic member 2221 toward the third magnetic shielding portion 2222b, so that the coil 2224 after being energized has an Ampere force parallel to the extension direction of the first magnetic shielding portion 2222a, ensuring that the Ampere force received by the coil 2224 located inside the magnetic shielding member 2222 after being energized is in the extension direction of the third magnetic shielding portion 2222b (refer to Figure 5 The coil 2224 has a component in the direction indicated by a in the figure, thereby enabling the coil 2224 to move along the third magnetic shielding portion 2222b.

[0144] The coil 2224 may be a circular coil, a rectangular coil, a square coil, a square coil or a coil 2224 of other shapes that is sleeved on the third magnetic shielding portion 2222 b.

[0145] For example, refer to Figure 5 and Figure 6As shown, the coil 2224 is a rectangular coil, that is, the cross-sectional shape of the coil 2224 is a rectangle, and the rectangular coil includes two left and right parts and two upper and lower parts.

[0146] Among them, the left and right parts are respectively located on the left and right sides of the third magnetic shielding part 2222b, that is, the two parts are respectively located on the side of the third magnetic shielding part 2222b facing the first magnetic shielding part 2222a and the side away from the first magnetic shielding part 2222a, and the two parts are perpendicular to the extension direction of the third magnetic shielding part 2222b. The magnetic field generated by the magnetization effect of the driving magnetic part 2221 will act on the coil 2224 and be perpendicular to the current on the side of the coil 2224 close to the first magnetic shielding part 2222a, so that this side is subjected to the Ampere force toward the extension direction of the third magnetic shielding part 2222b, thereby increasing the driving force of the coil 2224 in the extension direction of the third magnetic shielding part 2222b, so that the motor carrier 221 can move stably along the extension direction of the third magnetic shielding part 2222b.

[0147] Reference Figure 6 As shown, the power supply device 2223 provides the coil 2224 with a clockwise current, i.e., the direction indicated by the arrow c. The current direction of the coil 2224 close to the first magnetic shielding portion 2222a is upward. When the current is subjected to a magnetic field perpendicular to the current, an Ampere force perpendicular to the paper and toward the inside of the paper is generated. Figure 5 In FIG. 2 , the Ampere force is parallel to the extension direction of the third magnetic shielding portion 2222 b and points to the right, that is, the direction indicated by arrow a.

[0148] When the power supply device 2223 provides counterclockwise current to the coil 2224, the current direction of the coil 2224 close to the first magnetic shielding portion 2222a is downward. After the current is subjected to a magnetic field perpendicular to the current, an Ampere force perpendicular to the paper and toward the outside of the paper is generated. Figure 5 In FIG. 2 , the Ampere force is parallel to the extension direction of the third magnetic shielding portion 2222 b and points to the left, that is, the opposite direction to the direction indicated by arrow a.

[0149] The upper and lower parts of the coil 2224 are respectively located on the upper and lower sides of the third magnetic shielding part 2222b. When these two parts are energized, the direction of the current on them is parallel to the direction of the magnetic flux lines, and no Ampere force is generated, so no driving force in any direction is generated on these two parts.

[0150] The third magnetic shielding portion 2222b of the embodiment of the present application also limits the coil 2224, preventing the coil 2224 from moving in directions other than the extension direction of the third magnetic shielding portion 2222b, further ensuring that the coil 2224 drives the motor carrier 221 to move only along the extension direction of the third magnetic shielding portion 2222b.

[0151] In this embodiment, the magnetic shield 2222 can be connected to a fixed component within the camera module 20 or the mobile phone. For example, the first magnetic shielding portion 2222a of the magnetic shield 2222 is fixed to a fixed component within the camera module 20 or the mobile phone to ensure that the magnetic shield 2222 is stationary. The coil 2224 is connected to the motor carrier 221. In this way, when energized, the coil 2224 moves along the extension direction of the third magnetic shielding portion 2222b under the influence of the magnetic field of the driving magnetic member 2221, thereby driving the motor carrier 221 to move in a direction parallel to the extension direction of the third magnetic shielding portion 2222b, i.e., the direction indicated by arrow a. This achieves stable movement of the lens 21 connected to the motor carrier 221 and realizes a long-stroke zoom function.

[0152] It should be noted that the extension direction of the third magnetic shielding portion 2222b, i.e., the direction indicated by the arrow a, is parallel to the extension direction of the axis l of the lens 21, so as to ensure that when the coil 2224 drives the motor carrier 221 to move on the third magnetic shielding portion 2222b, the lens 21 can move along its own axis direction, i.e., the specified direction, thereby realizing the zoom process of the camera module 20.

[0153] Reference Figure 4 As shown, for example, when the power supply device 2223 provides a clockwise current to the coil 2224, the coil 2224 drives the motor carrier 221 to move on the third magnetic shield 2222b in the direction indicated by the arrow x, thereby driving the lens 21 to move in the direction indicated by the arrow x. When the power supply device 2223 provides a counterclockwise current to the coil 2224, the coil 2224 drives the motor carrier 221 to move on the third magnetic shield 2222b in the opposite direction of the arrow x, thereby driving the lens 21 to move in the opposite direction of the arrow x.

[0154] It can be understood that the movement displacement of the motor carrier 221 is the movement displacement of the coil 2224 on the third magnetic shielding portion 2222b, that is, the movement displacement of the motor carrier 221 is equal to the extension length of the third magnetic shielding portion 2222b minus the length of the coil 2224 along the extension direction of the third magnetic shielding portion 2222b. Therefore, the embodiment of the present application can adjust the movement displacement of the motor carrier 221 by adjusting the extension length of the third magnetic shielding portion 2222b, thereby achieving the adjustment of the zoom range of the lens 21.

[0155] Based on the foregoing, it can be seen that the embodiment of the present application can achieve long-stroke drive of the motor carrier 221 through the aforementioned drive assembly 222, thereby ensuring long-stroke zooming of the lens 21. Because the movement range of the motor carrier 221 is related to the length of the third magnetic shielding portion 2222b, the long-stroke movement of the motor carrier 221 can be achieved by extending the length of the third magnetic shielding portion 2222b, thereby increasing the focal length adjustment range of the camera module 20 and improving the user experience.

[0156] At the same time, the driving device 22 has a simple structure, which effectively reduces the difficulty of manufacturing and assembling, and the cost of each component is lower than that of a stepper motor, thereby reducing the manufacturing cost of the entire camera module 20.

[0157] In addition, by extending the two ends of the driving magnetic part 2221 to the two ends of the third magnetic shielding part 2222b, it is ensured that when the coil 2224 moves to any position along the extension direction of the third magnetic shielding part 2222b, it is in a stable magnetic field of the driving magnetic part 2221, ensuring that the current in the coil 2224 perpendicular to the magnetic flux lines is subjected to a stable Ampere force, so that the coil 2224 after being energized can move stably on the third magnetic shielding part 2222b, thereby realizing the driving of the motor carrier 221.

[0158] Figure 7 yes Figure 3 A top view of Figure 8 yes Figure 3 Assembly diagram of the drive unit and lens. Figure 3 、 Figure 7 and Figure 8 As shown, in order to improve the structural stability of the drive device 22 of the embodiment of the present application, the drive device 22 may further include a fixing base 223, and the magnetic shield 2222 of the drive assembly 222 is connected to the fixing base 223. For example, the first magnetic shielding portion 2222a of the magnetic shielding portion 2222 is connected to the fixing base 223, or both second magnetic shielding portions 2222c of the magnetic shielding portion 2222 may be connected to the fixing base 223.

[0159] Of course, in some examples, the first magnetic shield 2222a and the two second magnetic shields 2222c can also be connected to the fixing base 223 to further improve the connection strength between the drive assembly 222 and the fixing base 223. During assembly, the magnetic shield 2222 of the drive assembly 222 is first fixed to the fixing base 223, and then the fixing base 223 is assembled into the housing 10 of an electronic device such as a mobile phone, thereby achieving stable assembly of the drive device 22 within the electronic device.

[0160] By installing the magnetic shielding part 2222 of the driving component 222 on the fixing base 223, the driving device 22 is stably fixed in the electronic device through the fixing base 223, thereby ensuring that the magnetic shielding part 2222 is stable and motionless. In this way, the coil 2224 after being energized will move stably along the extension direction of the third magnetic shielding part 2222b under the action of the magnetic field, thereby driving the motor carrier 221 to move stably along the extension direction parallel to the third magnetic shielding part 2222b.

[0161] In addition, by fixing the magnetic shielding member 2222 of the driving assembly 222 on the fixing seat 223, when the driving device 22 is assembled on the electronic device, the fixing seat 223 can be directly fixed in the electronic device to complete the assembly of the driving device 22, thereby improving the assembly efficiency of the driving device 22 in the electronic device and making the structure of the entire driving device 22 more compact.

[0162] Taking the driving of a single lens 21 as an example, the driving device 22 of this embodiment can be a single device. During assembly, the driving device 22 of this embodiment can have a single driving assembly 222, with the magnetic shield 2222 of the driving assembly 222 fixed to the fixing base 223. One end of the motor carrier 221 is connected to the coil 2224 of the driving assembly 222, and the other end is connected to one end of the lens 21. During operation, the power supply 2223 provides current to the coil 2224, which drives the motor carrier 221 to move in a direction parallel to the extension of the third magnetic shield 2222b, thereby driving the lens 21 to move in a specified direction, achieving long-stroke zoom of the lens 21.

[0163] In some examples, there may be two drive devices 22. For example, one drive device 22 may be provided on either side of the axis 1 of the lens 21, with the motor carrier 221 of each drive device 22 connected to the sidewall of the lens 21 on one side of the axis 1. During operation, the drive assemblies 222 of the drive devices 22 located on either side of the axis 1 of the lens 21 respectively drive the corresponding motor carrier 221 to move, thereby achieving stable drive of the lens 21 by synchronously driving the sidewalls on both sides of the axis 1 of the lens 21. It will be understood that in this example, the motor carrier 221 of the drive device 22 can only be connected to one side of the lens 21, and the two drive devices 22 can achieve simultaneous drive of both ends of the axis 1 of the lens 21.

[0164] Figure 9 yes Figure 7 Cross-section along CC line. Figure 8 and Figure 9As shown, in a possible implementation, the motor carrier 221 may include two carrier parts 2211 arranged opposite to each other, and a mounting position 2215 for the lens 21 is formed between the two carrier parts 2211. The side walls of the lens 21 at both ends of the axis l are respectively connected to the corresponding carrier parts 2211.

[0165] In actual use, the sidewalls of the lens 21 located on either side of the axis 1 each extend with a lens connection portion 211, and two carrier portions 2211 are respectively connected to the corresponding lens connection portion 211. In this embodiment, there are at least two drive assemblies 222, and at least two drive assemblies 222 are respectively connected to the two opposing carrier portions 2211 to drive the two carrier portions 2211 to move, thereby driving the movement of the lens 21. Typically, the lens body 212 of the lens 21 and the lens connection portions 211 located on either side of the axis 1 are formed as a single, integral piece to enhance the structural strength of the lens 21.

[0166] like Figures 7 to 9 As shown, the motor carrier 221 of this embodiment also includes a supporting portion 2212, the two ends of which are respectively connected to two opposite carrier portions 2211, and the bottom of the lens 21 is supported on the supporting portion 2212, thereby improving the stability of the lens 21 on the motor carrier 221.

[0167] Reference Figure 7 As shown, in order to achieve the fixation of the driving components 222 corresponding to the two carrier parts 2211, the fixing seat 223 of this embodiment may include two relatively arranged sub-fixing seats 2231, and the driving components 222 of the two carrier parts 2211 of the driving motor carrier 221 are respectively fixed on the corresponding sub-fixing seats 2231, and the motor carrier 221 is located between the two sub-fixing seats 2231 to make the structure of the entire driving device 22 more compact.

[0168] When the driving device 22 is specifically assembled, the two sub-fixing seats 2231 can be fixed inside the housing 10 of the electronic device to achieve stable assembly between the camera module 20 and the electronic device.

[0169] Reference Figure 3 and Figure 7 As shown, in order to further improve the structural stability of the fixing base 223, a reinforcement base 2232 can be connected between one end of the two sub-fixing bases 2231. The reinforcement base 2232 is arranged away from the light-transmitting area 11 on the housing 10. A light avoidance opening 2233 is formed on the opposite side of the reinforcement base 2232. The light avoidance opening 233 faces the light-transmitting area 11, so that the lens 21 inside the fixing base 223 can transmit light to the outside through the light avoidance opening 233 and the light-transmitting area 11, thereby ensuring normal shooting operation of the camera module 20.

[0170] The structure and working principle of the driving device 22 of the present application are described below by taking driving a lens 21 as an example.

[0171] Reference Figure 7 and Figure 8 As shown, in order to drive a lens 21 to move, there are two driving components 222 in this embodiment. The magnetic shielding parts 2222 of the two driving components 222 are connected to the corresponding sub-fixing seats 2231, the coils 2224 are respectively connected to the corresponding carrier parts 2211, and the two lens connecting parts 211 of the lens 21 are respectively connected to the corresponding carrier parts 2211.

[0172] During operation, the power supply device 2223 of each driving component 222 supplies power to the corresponding coil 2224. After being energized, the coil 2224 drives the carrier part 2211 to move along the extension direction parallel to the third magnetic shielding part 2222b under the action of the magnetic field, thereby achieving stable driving of the lens 21 between the two carrier parts 2211, thereby improving the reliability of the long-stroke zoom of the lens 21 by the driving device 22.

[0173] In this embodiment, the two carrier parts 2211 of the motor carrier 221 are respectively connected to the lens connecting parts 211 on both sides of the axis 1 of the lens 21, so that the lens 21 is stably fixed on the motor carrier 221, thereby ensuring that the lens 21 and the motor carrier 21 move synchronously.

[0174] In this embodiment, when the carrier portion 2211 of the motor carrier 221 is connected to the coil 2224, the end of the carrier portion 2211 away from the lens 21 can be directly fixed on the coil 2224, so that the coil 2224 can drive the carrier portion 2211 to move synchronously when it moves along the third magnetic shielding portion 2222b under the action of the Ampere force.

[0175] Reference Figure 3 and Figure 7 As shown, in some examples, a retaining seat 2213 can be formed on a side of the carrier portion 2211 of the motor carrier 221 near the third magnetic shielding portion 2222b. A limiting hole is defined in the retaining seat 2213. The retaining seat 2213 is mounted on the third magnetic shielding portion 2222b, and the coil 2224 mounted on the third magnetic shielding portion 2222b is retained within the limiting hole of the retaining seat 2213. Thus, when the coil 2224 is energized and moves on the third magnetic shielding portion 2222b, it can drive the carrier portion 2211 to move synchronously via the retaining seat 2213. The provision of the retaining seat 2213 simplifies the connection structure between the carrier portion 2211 and the coil 2224, making assembly between the carrier portion 2211 and the coil 2224 more convenient and quick.

[0176] It is understood that the width of the limiting hole on the holder 2213 matches the width of the coil 2224 to ensure that the coil 2224 moves synchronously with the holder 2213. The width of the coil 2224 specifically refers to the width of the coil 2224 along the extension direction of the third magnetic shielding portion 2222b. Similarly, the width of the limiting hole specifically refers to the width of the limiting hole along the extension direction of the third magnetic shielding portion 2222b.

[0177] In practical applications, the side surface of the lens 21 is generally an arc-shaped structure. In order to facilitate the assembly of the lens 21 between the two opposite carrier parts 2211 of the motor carrier 221, at least part of the side surface of each carrier part 2211 facing the side wall of the lens 21 can be configured as an arc surface 2211a that matches the shape of the side wall of the lens 21. Figure 4 and Figure 8 As shown. The side wall of the carrier portion 2211 facing the lens 21 is configured as an arcuate surface 2211a that matches the shape of the side wall of the lens 21. This improves the fit between the side wall of the lens 21 and the side wall of the carrier portion 2211, reduces the assembly gap between the lens 21 and the motor carrier 221, and makes the assembled drive device 22 more compact. In addition, this arrangement prevents damage to the lens 21 caused by the side wall of the carrier portion 2211 facing the lens 21 during assembly of the lens 21 and the motor carrier 221.

[0178] Reference Figure 7 As shown, in order to ensure that the carrier part 2211 of the motor carrier 221 moves stably along a straight line driven by the coil 2224, two first guide rails 225 are arranged side by side in the fixed seat 223 of this embodiment, and each first guide rail 225 is respectively fixed in the corresponding sub-fixing seat 2231. The carrier part 2211 located in each sub-fixing seat 2231 is movably mounted on the corresponding first guide rail 225, so that each carrier part 2211 moves along the first guide rail 225 under the drive of the coil 2224, thereby ensuring that each carrier part 2211 moves along a straight line.

[0179] At the same time, the first guide rails 225 also provide stable support for the carrier portion 2211. It is understood that the extension direction of each first guide rail 225 is parallel to the extension direction of the third magnetic shielding portion 2222b, so as to ensure that the movement direction of the carrier portion 2211 on the first guide rails 225 is consistent with the movement direction of the coil 2224.

[0180] Reference Figure 8As shown, in actual use, the camera module 20 further includes two second guide rails 24 arranged side by side, and the two second guide rails 24 are correspondingly arranged on the side of the two first guide rails 225 away from the bottom of the fixing base 223. The second guide rails 24 are arranged parallel to the first guide rails 225, and the two lens connecting portions 211 of the lens 21 are respectively mounted on the corresponding second guide rails 24, so that each lens connecting portion 211 moves along the corresponding second guide rail 24 under the drive of the carrier portion 2211, thereby ensuring stable movement of the lens 21 along the axis 1.

[0181] Reference Figure 8 As shown, due to manufacturing errors, there is a certain degree of parallelism error between the first guide rail 225 and the second guide rail 24 disposed vertically. To accommodate this parallelism tolerance, a buffer device 226 is provided between each carrier portion 2211 and the lens connecting portion 211. The elastic deformation of the buffer device 226 absorbs the parallelism tolerance between the first guide rail 225 and the second guide rail 24, thereby preventing the carrier portion 2211 and the lens 21 from coming into close contact during movement and causing a jam. This also facilitates the decoupling of the lens 21 from the motor carrier 221.

[0182] The buffer device 226 may be a spring disposed on a side of each carrier portion 2211 facing the lens connecting portion 211 , so as to simplify the structure of the buffer device 226 and thereby improve the assembly efficiency of the driving device 22 .

[0183] When the carrier part 2211 is specifically connected to the lens connecting part 211, adhesives can be provided on both sides of the buffer device 226, such as the spring, to bond with the carrier part 2211 and the lens connecting part 211, thereby achieving a stable connection between the carrier part 2211 and the lens connecting part 211.

[0184] Figure 10 yes Figure 3 A partial schematic diagram of the internal structure; Figure 11 yes Figure 10 A top view of the power supply device; Figure 12 yes Figure 10 The main view of the power supply unit. Figures 10 to 12 As shown, when the driving device 22 of this embodiment is working, the coil 2224 of each driving component 222 will continuously move along the third magnetic shielding portion 2222b. In order to ensure that the power supply device 2223 stably supplies power to the moving coil 2224, one end of the power supply device 2223 of this embodiment is connected to the motor carrier 221 so that the power supply device 2223 can move with the movement of the motor carrier 221, thereby forming a stable and controllable current in the coil 2224 fixed on the motor carrier 221, generating a stable driving force for the coil 2224, and thus achieving stable driving of the motor carrier 221.

[0185] It is understandable that one end of the power supply device 2223 connected to the motor carrier 221 is also electrically connected to the coil 2224 on the motor carrier 221 to achieve stable power supply to the coil 2224 .

[0186] Reference Figure 10 and Figure 11 As shown, specifically, the power supply device 2223 is a flexible circuit board. One end of the flexible circuit board is electrically connected to the main control board 23 of the camera module 20, and the other end is connected to one of the carrier portions 2211 of the motor carrier 221 and electrically connected to the coil 2224 connected to the carrier portion 2211. When the carrier portion 2211 moves along the first guide rail 225 driven by the coil 2224, it drives one end of the flexible circuit board to move synchronously with the carrier portion 2211, thereby allowing the main control board 23 to provide a stable current to the coil 2224 through the flexible circuit board.

[0187] Continue to refer to Figure 11 As shown, the flexible printed circuit board may include a fixed portion 2223a and a movable portion 2223b connected to the fixed portion 2223a. The fixed portion 2223a is fixed to the fixed base 223. One end of the movable portion 2223b is connected to one of the carrier portions 2211 of the motor carrier 221, and at least a portion of the movable portion 2223b extends along the movement direction of the carrier portion 2211. This allows the carrier portion 2211 of the motor carrier 221 to drive the movable portion 2223b to move stably, thereby achieving stable power supply to the coil 2224 on the carrier portion 2211. In addition, the movable portion 2223b is connected to the fixed base 223 via the fixed portion 2223a to ensure stable current transmission between the flexible printed circuit board and the main control board 23, thereby further ensuring stable current input to the coil 2224.

[0188] Among them, the end of the movable part 2223b connected to the motor carrier 221 can be configured as an arc segment 2223c, so that the movable part 2223b can be transitioned to the carrier part 2211 of the motor carrier 221 through the arc segment, so as to avoid the end of the flexible circuit board connected to the carrier part 2211 from being damaged and affecting the current input to the coil 2224.

[0189] In some examples, a reinforcing piece 2223d may be further provided at one end of the movable portion 2223b so that one end of the movable portion 2223b is fixed to the carrier portion 2211 through the reinforcing piece 2223d, thereby enhancing the connection strength between the flexible circuit board and the carrier portion 2211 and improving the reliability of the movable portion 2223b of the flexible circuit board moving with the carrier portion 2211. Figure 12As shown, an electrical connection end 2223f is formed on the reinforcing piece 2223d, and the electrical connection end 2223f is electrically connected to the coil 2224 on the carrier portion 2211, thereby achieving electrical connection between the movable portion 2223b and the coil 2224.

[0190] When the reinforcing piece 2223d is specifically connected to the carrier portion 2211, the reinforcing piece 2223d can be fastened to the carrier portion 2211 in a detachable manner such as screws or snaps.

[0191] Continue to refer to Figure 11 As shown, the flexible printed circuit board of this embodiment may further include a transition portion 2223e, which connects the fixed portion 2223a and the movable portion 2223b via the transition portion 2223e, so that the entire movable portion 2223b can extend along the movement direction of the motor carrier 221. For example, the fixed portion 2223a of the flexible printed circuit board is fixed to the corresponding sub-fixing seat 2231, one end of the transition portion 2223e is connected to the fixed portion 2223a, and the other end extends to the bottom of the carrier portion 2211 corresponding to the motor carrier 221. One end of the movable portion 2223b is connected to the transition portion 2223e, and the other end extends along the movement direction of the carrier portion 2211. The other end of the movable portion 2223b is connected to the upper portion of the carrier portion 2211 and is electrically connected to the coil 2224 on the carrier portion 2211.

[0192] The transition portion 2223e extends the travel of the movable portion 2223b driven by the carrier portion 2211 of the motor carrier 221 in a direction parallel to the third magnetic shielding portion 2222b, ensuring that the stability of the fixed portion 2223a is not affected when the carrier portion 2211 drives the movable portion 2223b to move in the motion direction.

[0193] Reference Figure 9 As shown, in order to detect the moving position of the motor carrier 221 in real time, the driving device 22 of this embodiment also includes a position detection device 224. Specifically, the position detection device 224 includes a Hall element 2241 and a sensing magnetic member 2242. The Hall element 2241 is arranged on the motor carrier 221, and the sensing magnetic member 2242 is arranged on the fixing seat 223. The Hall element 2241 and the power supply device 2223 are both connected to the processor signal of the camera module 20. The Hall element 2241 is used to detect the magnetic field strength of the sensing magnetic member 2242. When the Hall element 2241 detects that the magnetic field strength of the sensing magnetic member 2242 reaches a preset threshold, it sends a signal to the processor. The processor controls the power supply device 2223 to stop supplying power to the coil 2224 according to the signal, thereby stopping driving the motor carrier 221. Among them, the sensing magnetic member 2242 can be a magnet.

[0194] The following describes the position detection device 224 using the example of detecting the movement position of one of the carrier portions 2211 of the motor carrier 221. A Hall effect element 2241 is fixed to the carrier portion 2211, and a sensing magnetic element 2242 is fixed to the sub-mount 2231 on which the carrier portion 2211 resides. As the carrier portion 2211 moves along the first guide rail 225 driven by the coil 2224, the Hall effect element 2241 constantly detects the magnetic field strength generated by the sensing magnetic element 2242. The Hall effect element 2241 feeds this magnetic field strength value back to the processor, which calculates the distance between the Hall effect element 2241 and the sensing magnetic element 2242 and, therefore, the specific position of the carrier portion 2211. When the Hall effect element 2241 detects that the magnetic field strength of the sensing magnetic element 2242 reaches a preset threshold, it sends a signal to the processor, which, in response to the signal, controls the power supply 2223 to stop supplying power to the coil 2224, thereby stopping driving the carrier portion 2211.

[0195] In this embodiment, the Hall element 2241 and the magnetic sensing element 2242 are provided to detect and control the motion position of the motor carrier 221, thereby achieving closed-loop control of the motor carrier 221. Furthermore, by securing the Hall element 2241 to the carrier portion 2211 of the motor carrier 221, the power supply device 2223 connected to the carrier portion 2211 provides stable power to the Hall element 2241, thereby ensuring the proper operation of the Hall element 2241. For example, one end of a flexible printed circuit board connected to the carrier portion 2211 can be directly electrically connected to the Hall element 2241, thereby achieving stable power supply to the Hall element 2241.

[0196] Reference Figure 3 and Figure 9 As shown, in order to ensure that the Hall element 2241 installed on the carrier part 2211 can effectively detect the magnetic field strength of the sensing magnetic part 2242, this embodiment provides a mounting plate 2214 on the base 2213 of the carrier part 2211, and at the same time provides a mounting seat 2234 opposite to the mounting plate 2214 on the corresponding sub-fixing seat 2231, and fixes the Hall element 2241 on the side surface of the mounting plate 2214 facing the mounting seat 2234, and fixes the sensing magnetic part 2242 on the side surface of the mounting seat 2234 facing the mounting plate 2214, so as to avoid the situation where the magnetic field signal between the Hall element 2241 and the sensing magnetic part 2242 is weakened due to obstruction by other components, thereby further improving the detection accuracy of the Hall element 2241 on the magnetic field strength of the sensing magnetic part 2242.

[0197] Specifically, a receiving groove may be provided on the side of the mounting plate 2214 facing the mounting seat 2234 to receive the Hall element 2241 within the receiving groove, thereby improving the stability of the Hall element 2241 on the mounting plate 2214 while also reducing the size of the Hall element 2241 outside the mounting plate 2214. Similarly, a receiving groove may be provided on the side of the mounting seat 2234 facing the mounting plate 2214 to receive the sensing magnetic component 2242 within the receiving groove, thereby improving the stability of the sensing magnetic component 2242 on the mounting seat 2234 while also reducing the size of the sensing magnetic component 2242 outside the mounting seat 2234, thereby further improving the structural compactness of the drive device 22.

[0198] Reference Figure 2 As shown, in actual application, the camera module 20 includes a plurality of coaxial and sequentially spaced lenses 21, that is, the plurality of lenses 21 are spaced along their own axis direction (the extension direction of the third magnetic shielding portion 2222b). In order to achieve long-stroke movement of the plurality of lenses 21, the present embodiment can sequentially space a plurality of motor carriers 221 along the extension direction of the third magnetic shielding portion 2222b. Figure 3 and Figure 7 As shown, each motor carrier 221 is connected to a corresponding lens 21 , so that the driving device 22 can stably drive multiple lenses 21 at the same time.

[0199] In order to achieve the driving of multiple motor carriers 221, the number of coils 2224 in the driving component 222 of the embodiment of the present application can be multiple, and multiple coils 2224 are arranged at intervals on the third magnetic shielding part 2222b, and one end of each motor carrier 221 is respectively connected to the corresponding coil 2224. In this way, any coil 2224 that is energized can drive the corresponding motor carrier 221 to move under the action of the magnetic field.

[0200] For example, refer to Figure 5 and Figure 7 As shown, two coils 2224 are sleeved on the third magnetic shielding portion 2222b of the driving component 222, and the two coils 2224 are respectively connected to the two motor carriers 221. By energizing the two coils 2224, the coils 2224 generate magnetic fields parallel to the third magnetic shielding portion 2222b (as shown in FIG. Figure 7 The Ampere force (shown in the x direction) causes each coil 2224 to move in the x direction, thereby driving the two motor carriers 221 to move along the x direction.

[0201] In practical applications, the corresponding coil 2224 can be energized according to actual needs to drive the corresponding motor carrier 221 to move, thereby driving the corresponding lens 21.

[0202] In the embodiment of the present application, a plurality of coils 2224 are spaced apart by the third magnetic shielding portion 2222b, thereby achieving the driving of a plurality of spaced apart motor carriers 221, reducing the number of drive components 222, simplifying the number of parts of the entire drive device 22, thereby making the entire structure simpler and more compact, and improving the manufacturing and assembly efficiency of the drive device 22.

[0203] Taking the example of a motor carrier 221 including two carrier parts 2211 arranged opposite to each other, the two opposite carrier parts 2211 of each motor carrier 221 drive each lens 21, so that the driving device 22 with multiple motor carriers 221 can achieve stable driving of multiple lenses 21.

[0204] To simplify the structure of the driving device 22 , in some examples, there may be two driving components 222 , and the two driving components 222 are respectively disposed on one side of two opposite carrier portions 2211 of the motor carrier 221 .

[0205] Among them, the magnetic shielding part 2222 of each driving component 222 is connected to the fixing seat 223, specifically connected to the sub-fixing seat 2231 corresponding to the carrier part 2211, and a plurality of coils 2224 are arranged on the third magnetic shielding part 2222b of each driving component 222. Among the multiple motor carriers 221, each carrier part 2211 located on the same side is respectively connected to the corresponding coil 2224, so that each coil 2224 after being energized can drive the carrier part 2211 on the corresponding motor carrier 221, thereby realizing long-stroke zoom of multiple lenses 21.

[0206] The number of coils 2224 on the third magnetic shielding portion 2222b may be equal to the number of the motor carrier 221 to correspond to the carrier portion 2211 on the same side, or may be greater than the number of the motor carrier 221. The redundant coils 2224 are reserved.

[0207] Taking a camera module 20 with two coaxially arranged lenses 21 as an example, the drive device 22 of this embodiment includes two motor carriers 221 spaced apart along the axis l of the lenses 21. Furthermore, a drive assembly 222 is disposed on each sub-mount 2231. The magnetic shield 2222 of each drive assembly 222 is connected to the sub-mount 2231. Two coils 2224 are mounted on a third magnetic shield 2222b, each connected to a carrier portion 2211 on the same side of the two motor carriers 221. During operation, power is supplied to the two coils 2224 on the third magnetic shield 2222b via the power supply device 2223 of each drive assembly 222. When energized, the two coils 2224 drive the two carrier portions 2211 on the same side along their corresponding first guide rails 225, achieving long-stroke zooming of the two lenses 21.

[0208] It can be understood that when only one lens 21 needs to be moved, only the two coils 2224 that drive the movement of the lens 21 can be powered, so that the carrier part 2211 connected to the two ends of the lens 21 moves along the two first guide rails 225 under the drive of the corresponding coils 2224.

[0209] Reference Figure 10 and Figure 11 As shown, in order to enable the power supply device 2223 of each driving component 222 to simultaneously and stably supply power to the two coils 2224 on the same side, the power supply device 2223 can be two movable parts 2223b, and the ends of the two movable parts 2223b away from the transition part 2223e respectively extend along the moving direction of the carrier part 2211 and are connected to the corresponding carrier part 2211, so that when the two carrier parts 2211 located on the same side move, they can respectively drive the corresponding movable parts 2223b to move, thereby realizing stable power supply to the coils 2224 on each carrier part 2211.

[0210] It should be understood that the number of the movable parts 2223 b of each power supply device 2223 corresponds to the number of the motor carriers 221 , so that the movable part 2223 b of each power supply device 2223 can be connected to the corresponding carrier part 2211 located on the same side.

[0211] This embodiment realizes the simultaneous driving of multiple carrier parts 2211 located on the same side by arranging multiple coils 2224 on the third magnetic shielding part 2222b of the driving component 222. Thus, while realizing the driving of multiple spaced-apart motor carriers 221, the number of driving components 222 is reduced, the number of parts of the entire driving device 22 is simplified, and the entire structure is simpler and more compact, thereby improving the manufacturing and assembly efficiency of the driving device 22.

[0212] Example 2

[0213] Figure 13 yes Figure 2 The second structural diagram of the middle drive device, Figure 14 yes Figure 13 Schematic diagram of the partial disassembly structure of the drive device in Figure 13 and Figure 14 As shown, different from the first embodiment, in the driving assembly 222 of the embodiment of the present application, the magnetic shielding member 2222 and at least one driving magnetic member 2221 are fixedly connected to the fixing seat 223 .

[0214] The fixing seat 223 includes at least one side wall, and at least a portion of the magnetic shielding member 2222 is fixed on the side wall of the fixing seat 223 . For example, Figure 14As shown in the figure, the fixed seat 223 includes two opposite side walls, the first magnetic shielding portion 2222a in the magnetic shielding member 2222 can be located on one side of the inner surface of the side wall of the fixed seat 223, and the first magnetic shielding portion 2222a can be fixed on the inner surface of the side wall of the fixed seat 223, and at least one driving magnetic member 2221 can be fixed on the first magnetic shielding portion 2222a.

[0215] The driving magnetic member 2221 and the coil 2224 are both located in the installation space enclosed by the first magnetic shielding portion 2222a and the two second magnetic shielding portions 2222c, and the driving magnetic member 2221 is fixed on the first magnetic shielding portion 2222a. The number of the driving magnetic member 2221 can be multiple. Figure 13 In the embodiment, the number of driving magnetic members 2221 in each driving assembly 222 is two, a coil 2224 is provided on one side of each driving magnetic member 2221 , and one end of each motor carrier 221 is connected to a coil 2224 .

[0216] Reference Figure 14 As shown, the driving magnetic member 2221 includes a first portion 2221a and a second portion 2221b arranged along the extension direction. The first portion 2221a and the second portion 2221b have opposite magnetic properties. The coil 2224 is located on the side of the driving magnetic member 2221 away from the first magnetic shield 2222a. The axial direction of the coil 2224 is perpendicular to the extension direction of the driving magnetic member 2221, and a portion of the coil 2224 is located on one side of the first portion 2221a, while the other portion of the coil 2224 is located on one side of the second portion 2221b.

[0217] Among them, see Figure 14 As shown, the fixed part 2223a in the power supply device 2223 is fixed on the fixed seat 223. The difference between the power supply device 2223 and the above embodiment is: in the embodiment of the present application, the movable part 2223b of the power supply device 2223 can be a spring, and one end of the movable part 2223b is electrically connected to the carrier part 2211 of the motor carrier 221 or electrically connected to the coil 2224, and the other end of the movable part 2223b bypasses the driving magnetic part 2221 and is electrically connected to the fixed part 2223a. In this way, when the carrier part 2211 of the motor carrier 221 moves, since the movable part 2223b is elastic, the carrier part 2211 drives one end of the movable part 2223b to move stably, and one end of the movable part 2223b is fixed, thereby achieving the purpose of powering the carrier part 2211 to move.

[0218] Figure 15 yes Figure 14 The main view of the Figure 15 As shown, under the action of the magnetic field, the energized coil 2224 moves relative to the first magnetic shielding portion 2222a along the extending direction of the driving magnetic member 2221 (refer to Figure 15 The motor carrier 221 is driven to move in the direction indicated by the arrow e), wherein the extension direction of the driving magnetic member 2221 is consistent with the specified direction. In this way, the coil 2224 drives the motor carrier 221 to move in a path parallel to the specified direction during the movement, thereby achieving stable movement of the lens 21 connected to the motor carrier 221 and realizing a long-stroke zoom function.

[0219] It should be noted that the axial direction of the coil 2224 refers to the direction indicated by the central axis of the annular space formed by the coil 2224 .

[0220] Reference Figure 15 As shown, for the convenience of description, the coil 2224 of an embodiment of the present application may include a left half 2224a and a right half 2224b arranged in sequence along the extension direction of the driving magnetic part 2221, wherein the left half 2224a and the right half 2224b are respectively located on one side of the first part 2221a and the second part 2221b of the driving magnetic part 2221.

[0221] Because the magnetic properties of the first part 2221a and the second part 2221b are opposite, and the current directions of the left half 2224a and the right half 2224b of the coil 2224 are opposite after being energized, and the current direction is perpendicular to the magnetic flux lines acting on the coil 2224 by the driving magnetic part 2221, therefore, after the coil 2224 is energized, the Ampere force acting on its left half 2224a and the right half 2224b will have a component in the extension direction of the driving magnetic part 2221, and the direction of the component is consistent, so that the coil 2224 can move in the extension direction of the driving magnetic part 2221.

[0222] Taking the example of a rectangular ring-shaped coil 2224, where the first portion 2221a of the driving magnetic member 2221 is the north pole and the second portion 2221b is the south pole, the left half 2224a of the coil 2224 is located on one side of the first portion 2221a, and the right half 2224b of the coil 2224 is located on one side of the second portion 2221b. The left half 2224a and the right half 2224b of the coil 2224 each include a vertical portion and a horizontal portion, wherein the vertical portion is perpendicular to the extension direction of the driving magnetic member 2221, and the horizontal portion is parallel to the extension direction of the driving magnetic member 2221.

[0223] The magnetic flux lines generated by the driving magnetic member 2221 pass through the first portion 2221a and pass through the coil 2224 into the second portion 2221b. Thus, the magnetic flux lines received by the left half 2224a of the coil 2224 are perpendicular to the left half 2224a of the coil 2224 and point from the side facing the driving magnetic member 2221 to the side facing away from the driving magnetic member 2221 (i.e., from the inside of the paper to the outside of the paper). The magnetic flux lines received by the right half 2224b of the coil 2224 are perpendicular to the right half of the coil 2224 and point from the side facing away from the driving magnetic member 2221 to the side facing the driving magnetic member 2221 (i.e., from the outside of the paper to the inside of the paper).

[0224] When the power supply device 2223 provides the coil 2224 with a clockwise current, i.e., the direction indicated by the arrow d, the current direction on the vertical part of the left half 2224a of the coil 2224 is upward. According to the left-hand rule, the direction of the Ampere force on the vertical part of the left half 2224a is parallel to the extension direction of the driving magnetic part 2221 and points to the right, i.e., the direction indicated by the arrow e. Since the current directions of the upper and lower horizontal parts of the left half 2224a are opposite and the magnetic fields they are subjected to are the same, the Ampere forces on the upper and lower parts cancel each other out.

[0225] The direction of the current on the vertical part of the right half 2224b of the coil 2224 is downward. According to the left-hand rule, the direction of the Ampere force on the vertical part of the right half 2224b is parallel to the extension direction of the driving magnetic part 2221 and points to the right, that is, the direction indicated by the arrow e. Since the current directions of the upper and lower horizontal parts of the right half 2224b are opposite and the magnetic field directions they are subjected to are the same, the Ampere forces on the upper and lower parts cancel each other out.

[0226] Based on the above analysis, it can be seen that the entire coil 2224 is subjected to an Ampere force parallel to the extension direction of the driving magnetic member 2221, and the direction of this Ampere force points to the right, that is, the direction indicated by arrow e. It can be understood that when the power supply device 2223 provides a counterclockwise current to the coil 2224, the entire coil 2224 is subjected to an Ampere force parallel to the extension direction of the driving magnetic member 2221, and the direction of this Ampere force points to the left, that is, the opposite direction to the direction indicated by arrow e.

[0227] Reference Figure 13As shown, when the magnetic shielding member 2222 is connected to the camera module 20 or a fixed component in the mobile phone, such as the fixing seat 223, for example, the first magnetic shielding portion 2222a of the magnetic shielding member 2222 is fixed to the fixing seat 223 to ensure that the magnetic shielding member 2222 is fixed, and the coil 2224 is connected to the motor carrier 221. In this way, the coil 2224 after being energized will be driven along the extension direction of the driving magnetic member 2221 (refer to the magnetic field of the driving magnetic member 2221) under the action of the magnetic field of the driving magnetic member 2221. Figure 13 The motor carrier 221 moves in the x direction, thereby driving the motor carrier 221 to move along the x direction, thereby achieving stable movement of the lens 21 connected to the motor carrier 221 and realizing a long-stroke zoom function.

[0228] In the embodiment of the present application, the two parts of the driving magnetic part 2221 along the extension direction are set to have opposite magnetic properties, and the two parts of the coil 2224 along the extension direction of the driving magnetic part 2221 are respectively set on one side of the first part 2221a and the second part 2221b. In this way, by energizing the coil 2224, the coil 2224 moves along the extension direction of the driving magnetic part 2221 under the action of the magnetic field, thereby ensuring that the motor carrier 221 connected to the coil 2224 moves along the specified direction, thereby realizing the driving of the lens 21.

[0229] In the embodiment of the present application, the moving stroke of the motor carrier 221 can be changed by adjusting the extension length of the first portion 2221a and the second portion 2221b of the driving magnetic member 2221 . The structure is simple and the assembly and operation are convenient.

[0230] Reference Figure 14 As shown, in some examples, the magnetic shielding member 2222 may further include a fourth magnetic shielding portion 2222d, and the two ends of the fourth magnetic shielding portion 2222d along the extension direction are respectively connected to the two second magnetic shielding portions 2222c, and the first magnetic shielding portion 2222a is connected to one side of the fourth magnetic shielding portion 2222d. For example, the fourth magnetic shielding portion 2222d includes two side edges arranged opposite to each other along the width direction, and the first magnetic shielding portion 2222a is connected to one of the side edges. The first magnetic shielding portion 2222a, the two second magnetic shielding portions 2222c and the fourth magnetic shielding portion 2222d together enclose an installation space for the magnetic shielding member 2222, and the coil 2224 and the driving magnetic member 2221 are both arranged on the fourth magnetic shielding portion 2222d.

[0231] In the embodiment of the present application, the provision of the fourth magnetic shielding portion 2222 d not only further serves to isolate the magnetic field, but also improves the structural stability of the driving magnetic member 2221 and the coil 2224 in the driving device 22 .

[0232] Reference Figure 13As shown, different from the first embodiment, when the driving device 22 includes multiple motor carriers 221 arranged at intervals along the extension direction of the driving magnetic part 2221 (such as the direction indicated by x), in order to realize the driving of multiple motor carriers 221, in the driving component 222 of the embodiment of the present application, the number of driving magnetic parts 2221 is multiple, and the multiple driving magnetic parts 2221 are arranged in sequence along the extension direction of the first magnetic shielding part 2222a, and a coil 2224 is provided on one side of each driving magnetic part 2221, and one end of each motor carrier 221 is respectively connected to the corresponding coil 2224, so that any coil 2224 that is energized can drive the corresponding motor carrier 221 to move under the action of the magnetic field.

[0233] Reference Figure 13 As shown, taking two motor carriers 221 as an example, in order to realize the driving of multiple motor carriers 221, the driving component 222 of the embodiment of the present application includes two driving magnetic parts 2221, and the two driving magnetic parts 2221 are arranged in sequence along the extension direction of the first magnetic shielding part 2222a (such as the direction indicated by x). A coil 2224 is provided on one side of each driving magnetic part 2221, and one end of each motor carrier 221 is respectively connected to the corresponding coil 2224. In this way, any coil 2224 that is energized can drive the corresponding motor carrier 221 to move under the action of the magnetic field, thereby driving the lens 21 connected to the motor carrier 221 to move.

[0234] Two adjacent driving magnetic components 2221 may contact each other, so as to save the space occupied by the driving component 222 in the driving device 22 .

[0235] Example 3

[0236] Figure 16 yes Figure 2 The third structural diagram of the middle drive device, Figure 17 yes Figure 16 Partial cross-section along line DD. Figure 16 and Figure 17 As shown, the difference between the driving device 22 of the first and second structures is that in the driving device 22 of the third structure provided in this embodiment, the coil 2224 of the driving component 222 is connected to the camera module 20 or a fixed component in the electronic device. For example, the coil 2224 of the driving component 222 is connected to the fixing seat 223, one end of the third magnetic shielding portion 2222b is passed through the coil 2224, and the third driving magnetic member 2221 is provided on the first magnetic shielding portion 2222a. Figure 16As shown, the driving magnetic component 2221 and the motor carrier 221 are respectively located on both sides of the first magnetic shielding portion 2222a. The driving magnetic component 2221 is, for example, arranged on a side wall facing outward of the first magnetic shielding portion 2222a. The driving magnetic component 2221 is opposite to the third magnetic shielding portion 2222b. The first magnetic shielding portion 2222a is connected to the motor carrier 221. In an embodiment of the present application, the motor carrier 221 is connected to the driving magnetic component 2221 through the first magnetic shielding portion 2222a.

[0237] In the embodiment of the present application, the coil 2224 is fixed. When the coil 2224 is energized, it drives the magnetic component 2221, the first magnetic shielding portion 2222a and the third magnetic shielding portion 2222b to move together, and drives the motor carrier 221 to move. Therefore, an avoidance channel 2231a is provided in the fixing seat 223 for the magnetic shielding component 2222 to move.

[0238] Consistent with the driving component 222 in Example 1 or Example 2, when the coil 2224 is energized and is close to one end of the driving magnetic part 2221 and is subjected to a vertical magnetic field, it will generate an Ampere force parallel to the first magnetic shielding part 2222a. Since the coil 2224 is fixed on the fixing seat 223, according to the principle of action and reaction force, the magnetic shielding part 2222 will pass through the coil 2224 to make reciprocating motion, thereby driving the motor carrier 221 connected to the first magnetic shielding part 2222a to move along a path parallel to the extension direction of the first magnetic shielding part 2222a, thereby realizing long-stroke zoom of the lens 21 fixed on the motor carrier 221.

[0239] Reference Figure 16 As shown, when the motor carrier 221 includes two carrier parts 2211 arranged opposite to each other, the coil 2224 of the driving component 222 for driving each carrier part 2211 is connected to the corresponding sub-fixing seat 2231. For example, the end of the coil 2224 away from the driving magnetic part 2221 can be connected to the sub-fixing seat 2231 to achieve the fixation of the coil 2224. At the same time, an avoidance channel 2231a is opened on the sub-fixing seat 2231, and the avoidance channel 2231a extends in the direction of the first magnetic shielding part 2222a, so that the magnetic shielding part 2222 passes through the coil 2224 under the action of the Ampere force and moves in the avoidance channel 2231a to achieve the driving of each carrier part 2211.

[0240] Since the coil 2224 is fixed on the sub-mount 2231 and does not move with the movement of the motor carrier 221, the power supply device 2223 for supplying power to the coil 2224 is connected to the sub-mount 2231 to provide a stable current to the coil 2224 on the sub-mount 2231.

[0241] In addition, by connecting the power supply device 2223 to the sub-fixing seat 2231 of the fixing seat 223 to simplify the structure of each carrier part 2211, not only the assembly efficiency of the driving device 22 is improved, but also the weight of the motor carrier 221 is reduced, so that the magnetic shielding part 2222 can effectively drive the motor carrier 221 to move.

[0242] Reference Figure 17 As shown, the Hall element 2241 of the position detection device 224 of this example is mounted on the fixing base 223, and the sensing magnetic member 2242 is mounted on the motor carrier 221. Specifically, in order to detect the moving position of each carrier portion 2211 on the motor carrier 221, a sensing magnetic member 2242 can be mounted on each carrier portion 2211. For example, a mounting groove can be provided inwardly at the bottom of the carrier portion 2211, and the sensing magnetic member 2242 is received in the mounting groove. This not only improves the stability of the sensing magnetic member 2242 on the carrier portion 2211, but also saves the space occupied by the sensing magnetic member 2242 in the vertical direction of the drive device 22, thereby making the structure of the drive device 22 more compact.

[0243] At the same time, a Hall element 2241 corresponding to the sensing magnetic element 2242 is mounted on the sub-mount 2231. As the carrier portion 2211 moves along the first guide rail 225 driven by the magnetic shield 2222, the Hall element 2241 constantly detects the magnetic field strength generated by the sensing magnetic element 2242. The Hall element 2241 feeds this magnetic field strength value back to the processor, which calculates the distance between the Hall element 2241 and the sensing magnetic element 2242, thereby determining the specific position of the carrier portion 2211. When the Hall element 2241 detects that the magnetic field strength of the sensing magnetic element 2242 reaches a preset threshold, it sends a signal to the processor, which controls the power supply device 2223 to stop supplying power to the coil 2224, thereby stopping driving the carrier portion 2211 and achieving closed control of the motor carrier 221.

[0244] Furthermore, by mounting the Hall element 2241 on the sub-mount 2231 on the mount 223, the Hall element 2241 can be stably powered by the power supply 2223 fixed to the sub-mount 2231. Furthermore, by arranging both the Hall element 2241 and the power supply 2223 on the mount 223, the assembly structure of the motor carrier 221 is further simplified, and the structural layout of the entire drive device 22 is made more reasonable and compact.

[0245] Reference Figure 16As shown, when there are multiple motor carriers 221 of the driving device 22 of this embodiment, the multiple carrier parts 2211 located on the same side are all driven by a driving component 222. For example, the multiple carrier parts 2211 located on the same side are all connected to the first magnetic shielding part 2222a of the magnetic shielding part 2222 located on that side, so that the magnetic shielding part 2222 of the driving component 222 can simultaneously drive the multiple carrier parts 2211 located on the same side when passing through the coil 2224 and moving in the avoidance channel 2231a, thereby realizing the synchronous driving of the lenses 21 on the multiple motor carriers 221.

[0246] The connection between each carrier portion 2211 and the first magnetic shield 2222a can be achieved in a variety of ways. For example, a snap can be formed on one end of the carrier portion 2211 near the first magnetic shield 2222a. By snapping the snap onto the first magnetic shield 2222a, a stable connection between the first magnetic shield 2222a and the carrier portion 2211 is achieved. For another example, each carrier portion 2211 and the first magnetic shield 2222a can be connected using screws. This not only ensures the connection strength between the carrier portion 2211 and the first magnetic shield 2222a, but also facilitates the independent replacement of the motor carrier 221 and the drive assembly 222.

[0247] This example does not specifically limit the connection method between the carrier portion 2211 and the first magnetic shielding portion 2222a, as long as the first magnetic shielding portion 2222a can drive the carrier portion 2211 to move synchronously when moving.

[0248] The present application also provides a camera module 20, comprising at least one lens 21 and a drive device 22 having any of the aforementioned structures. A drive assembly 222 of the drive device 22 is connected to the lens 21 via a motor carrier 221 to drive the lens 21 to move in a specified direction (e.g., parallel to the extension direction of the first magnetic shield 2222a of the drive assembly 222).

[0249] The embodiment of the present application sets the above-mentioned driving device 22 in the camera module 20 to drive the lens 21 to move on a path parallel to the specified direction, which not only realizes the long-stroke zoom process of the lens 21, but also the driving device 22 has a simple structure, effectively reducing the difficulty of manufacturing and assembling the entire camera module 20, and the cost of each component is lower than that of the stepper motor, thereby reducing the manufacturing cost of the entire camera module 20.

[0250] It should be noted that Figure 16 and Figure 17The driving component 222 in the driving device 22 shown is the structure in Example 1, while in this embodiment, the driving component 222 of the driving device 22 is the structure described in Example 2 and the assembly method between the structure described in Example 1 and the motor carrier 221 and the fixing seat 223 is consistent. Therefore, when the driving component 222 of the driving device 22 is the structure described in Example 2, the assembly method between the driving component 222 and the motor carrier 221 and the fixing seat 223 can directly refer to the above content and will not be repeated here.

[0251] An embodiment of the present application provides an electronic device, comprising a housing 10 and a camera module 20 as described above, wherein the camera module 20 is disposed on the housing 10. The housing 10 may be a back cover of the electronic device. When the electronic device is a smart terminal such as a mobile phone, the camera module 20 may be a rear camera module, or the camera module 20 may also be a front camera module.

[0252] By setting the above-mentioned camera module 20 in the electronic device, not only the long-stroke zoom of the camera module 20 of the electronic device is realized, ensuring that the electronic device can realize the functions of long-range shooting with a large focal length and wide-angle shooting with a small focal length, but also the structure of the electronic device is simplified, the difficulty of manufacturing and assembly is reduced, and the cost of each component is lower than that of the stepper motor, thereby reducing the manufacturing cost of the entire electronic device.

[0253] It should be noted that electronic devices include but are not limited to mobile phones, tablet computers, laptops, handheld computers, personal digital assistants (PDAs), wearable devices, virtual reality devices, and other electronic devices with camera modules.

[0254] In the description of the embodiments of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, an indirect connection via an intermediate medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on specific circumstances.

[0255] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the embodiments of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

Claims

1. A driving device for driving the lens movement of a camera module, characterized in that: The driving device comprises: At least one motor carrier and at least one driving assembly, each motor carrier being used to carry a lens, and each motor carrier being driven by one or more of the corresponding at least one driving assembly; Each of the drive assemblies includes at least one drive magnetic member, a power supply device, and at least one coil, wherein the power supply device is electrically connected to each of the coils, and each of the motor carriers is connected to the at least one coil or the at least one drive magnetic member; the at least one coil and the at least one drive magnetic member are configured to cooperate with each other when the at least one coil is energized to drive one of the motor carriers to move; Each of the drive assemblies further includes a magnetic shielding member, wherein the magnetic shielding member includes a first magnetic shielding portion, a fourth magnetic shielding portion, and two second magnetic shielding portions; The two second magnetic shielding parts are relatively arranged at the two ends of the first magnetic shielding part, and the two ends of the fourth magnetic shielding part along the extension direction are respectively connected to the two second magnetic shielding parts. The fourth magnetic shielding part includes two side edges relatively arranged along the width direction. The first magnetic shielding part is connected to one of the two side edges of the fourth magnetic shielding part. The first magnetic shielding part, the two second magnetic shielding parts and the fourth magnetic shielding part jointly enclose an installation space, and the coil and the driving magnetic part are both arranged on the fourth magnetic shielding part.

2. The driving device according to claim 1, characterized in that The magnetic shield also includes a third magnetic shielding portion; The third magnetic shielding portion is arranged opposite to and parallel to the first magnetic shielding portion, and both ends of the third magnetic shielding portion are connected to the two second magnetic shielding portions; The two ends of the driving magnetic part extend to the two second magnetic shielding parts respectively, and the coil is movably mounted on the third magnetic shielding part. Under the action of the magnetic field, the coil moves relative to the first magnetic shielding part along the extension direction of the third magnetic shielding part after being energized.

3. The driving device according to claim 1 or 2, characterized in that: The driving device also includes a fixing seat; The at least one motor carrier, the at least one driving component and the at least one lens are all arranged on the fixing seat.

4. The driving device according to claim 3, characterized in that Each of the motor carriers is connected to the at least one coil in the corresponding one or more drive components, and the at least one drive magnetic component is fixedly connected to the fixing seat.

5. The driving device according to claim 3, characterized in that Each of the motor carriers is connected to the at least one coil in the corresponding one or more drive components, and the magnetic shielding component and the at least one driving magnetic component are fixedly connected to the fixing seat.

6. The driving device according to claim 4 or 5, characterized in that: The fixing seat includes at least one side wall, and at least a portion of the magnetic shield is fixed on the side wall of the fixing seat.

7. The driving device according to claim 2, characterized in that There are multiple motor carriers, and the multiple motor carriers are spaced apart along the extending direction of the third magnetic shielding portion. There are multiple lenses, and the multiple lenses are spaced apart along their own axial directions.

8. The driving device according to claim 7, characterized in that There are multiple coils, and the multiple coils are spaced apart and sleeved on the third magnetic shielding portion; A holder is formed on each of the motor carriers. A limiting hole is provided on the holder. The holder is mounted on the third magnetic shielding portion. The coil connected to the motor carrier is clamped in the limiting hole of the holder.

9. The driving device according to claim 3, characterized in that There are multiple driving magnetic parts, and the multiple driving magnetic parts are arranged in sequence along the extension direction of the first magnetic shielding part. At least one coil is arranged on one side of each driving magnetic part, and the motor carrier is connected to the coil so that the coil drives the motor carrier to move after being energized.

10. The driving device according to claim 3, characterized in that The coil is fixed on the fixed seat, the driving magnetic component is arranged on the first magnetic shielding part, and the driving magnetic component and the motor carrier are respectively located on both sides of the first magnetic shielding part, and each of the motor carriers is connected to the first magnetic shielding part. The driving magnetic component is used to move after the coil is energized to drive the first magnetic shielding part and the motor carrier to move.

11. The driving device according to any one of claims 1 to 8, characterized in that: The driving magnetic member includes a first portion and a second portion arranged along an extension direction, the first portion and the second portion have opposite magnetic properties, and the coil is located on a side of the driving magnetic member away from the first magnetic shielding portion; The axis direction of the coil is perpendicular to the extension direction of the driving magnetic component, and a part of the coil is located on one side of the first part, and the other part of the coil is located on one side of the second part.

12. The driving device according to claim 3, characterized in that The power supply device is arranged on the motor carrier.

13. The driving device according to claim 12, characterized in that The power supply device includes a flexible circuit board; The flexible circuit board includes a fixed part and a movable part connected to the fixed part, the fixed part is connected to the fixing seat, one end of the movable part is electrically connected to the motor carrier or the coil, and at least a portion of the movable part extends along the moving direction of the motor carrier.

14. The driving device according to claim 13, characterized in that One end of the movable portion connected to the motor carrier is configured as an arc segment.

15. The driving device according to claim 13, characterized in that A reinforcing piece is provided at one end of the movable part, and the movable part is connected to the motor carrier through the reinforcing piece.

16. The driving device according to claim 13, characterized in that The flexible circuit board further includes a transition portion, and the fixed portion and the movable portion are connected via the transition portion.

17. The driving device according to claim 3, characterized in that The driving device further includes a position detection device; The position detection device includes a Hall element and a sensing magnetic member, the Hall element is arranged on the motor carrier, the sensing magnetic member is arranged on the fixing seat, and the Hall element and the power supply device are both connected to the processor signal of the camera module; The Hall element is used to detect the magnetic field strength of the sensing magnetic part, so that when the Hall element detects that the magnetic field strength of the sensing magnetic part reaches a preset threshold, it sends a signal to the processor, and the processor controls the power supply device to stop supplying power to the coil according to the signal.

18. The driving device according to claim 3, characterized in that The motor carrier is connected to the first magnetic shielding part, and the coil is connected to the fixing seat; an escape channel for the magnetic shielding part to move is provided in the fixing seat.

19. The driving device according to claim 18, characterized in that The power supply device is connected to the fixing seat.

20. The driving device according to claim 19, characterized in that The driving device further includes a position detection device; The position detection device includes a Hall element and a sensing magnetic member, the Hall element is arranged on the fixing seat, the sensing magnetic member is arranged on the motor carrier, and the Hall element and the power supply device are both connected to the processor signal of the camera module; The Hall element is used to detect the magnetic field strength of the sensing magnetic part, so that when the Hall element detects that the magnetic field strength of the sensing magnetic part reaches a preset threshold, it sends a signal to the processor, so that the processor controls the power supply device to stop supplying power to the coil.

21. The driving device according to any one of claims 17 to 20, characterized in that: The motor carrier includes two carrier parts arranged opposite to each other, and the two carrier parts are respectively used to connect with two lens connecting parts of the lens located on both sides of the axis; There are at least two driving assemblies, and at least two driving assemblies are respectively connected to two opposite carrier parts to drive the two carrier parts to move, thereby driving the lens to move.

22. The driving device according to claim 21, characterized in that Among the plurality of motor carriers, each of the carrier parts located on the same side is respectively connected to the corresponding coil in the driving assembly, and the first magnetic shielding part in the driving assembly is connected to the fixing seat; Alternatively, each carrier portion located on the same side is connected to the first magnetic shielding portion in the driving assembly, and all coils of the driving assembly are connected to the fixing seat.

23. The driving device according to claim 22, characterized in that Two first guide rails are arranged side by side in the fixing seat, and the two carrier parts are respectively sleeved on the corresponding first guide rails, and each of the carrier parts moves along the corresponding first guide rail under the drive of the driving component.

24. The driving device according to claim 23, characterized in that The camera module includes two second guide rails correspondingly arranged on a side of the two first guide rails away from the bottom of the fixing base, and the second guide rails are arranged parallel to the first guide rails. The two lens connecting parts are respectively mounted on the second guide rails, and each of the lens connecting parts moves along the corresponding second guide rail under the drive of the carrier part; A buffer device is provided between each carrier portion and the lens connecting portion.

25. The driving device according to claim 24, characterized in that The buffer device is a spring.

26. The driving device according to claim 21, characterized in that The motor carrier further includes a supporting portion; Two ends of the supporting portion are respectively connected to two opposite carrier portions, and the supporting portion is used to support the lens.

27. The driving device according to claim 21, characterized in that At least a portion of the side surface of each carrier portion facing the lens is configured as an arc-shaped surface matching the shape of the side wall of the lens.

28. A camera module, characterized in that: comprising at least one lens and a driving device according to any one of claims 1 to 27; The driving assembly of the driving device is connected to the lens through a motor carrier to drive the lens to move along a specified direction.

29. An electronic device, characterized in that: It comprises a shell and a camera module as claimed in claim 28, wherein the camera module is arranged on the shell.

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