Camera driving motor, camera module and electronic device

Abstract

Provided in the present application are a camera driving motor, a camera module and an electronic device. The present application relates to the technical field of photographing of electronic devices. The camera driving motor comprises a base, a seat body and a carrier, wherein the seat body is located on the base, the seat body is provided with an accommodating cavity, and the carrier is located in the accommodating cavity. The camera driving motor further comprises an image stabilization driving structure, wherein the image stabilization driving structure drives the seat body, the carrier and a lens to move along a plane perpendicular to the optical axis of the lens, and the image stabilization driving structure comprises a plurality of driving units, the plurality of driving units being arranged in the circumferential direction of the base, and each driving unit comprising a movable snap-fit pawl, a fixed snap-fit pawl, and an SMA wire connecting the movable snap-fit pawl and the fixed snap-fit pawl. The camera driving motor further comprises a plurality of balls arranged between the seat body and the base. The driving structure is an SMA driving structure, and the SMA driving structure is simple and occupies a small area, such that the size of the camera driving motor can be reduced, and the miniaturization of a camera module is realized; and using the plurality of balls can reduce the friction coefficient of the seat body during movement.

Description

Camera drive motors, camera modules and electronic equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on February 26, 2024, with application number 202410218072.7 and application name “Camera drive motor, camera module and electronic equipment”, all contents of which are incorporated by reference into this application, and this application claims priority to the Chinese patent application filed with the State Intellectual Property Office on March 29, 2024, with application number 202410385522.1 and application name “Camera drive motor, camera module and electronic equipment”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of electronic device camera technology, and in particular to a camera drive motor, a camera module having the camera drive motor, and an electronic device including the camera module. Background Art

[0003] Some electronic devices with camera functions have a drive motor integrated into the camera module. This drive motor is used to drive the lens to achieve automatic focusing (AF) and / or optical image stabilization (OIS), thereby ensuring the clarity of the electronic device's images.

[0004] With the miniaturization of products and the demand for shooting picture design, how to reduce the size of camera drive motors and improve the quality of shooting pictures are technical problems that need to be solved.

[0005] Summary of the Invention

[0006] The present application provides a camera drive motor, a camera module having the same, and an electronic device including the camera module. By introducing an SMA wire drive motor into the camera drive motor, optical image stabilization is achieved. The SMA wire drive motor has a simple structure and occupies a small area, enabling miniaturization of the camera drive motor. Furthermore, by providing multiple ball bearings, the friction coefficient of the base movement can be reduced, thereby improving the quality of captured images.

[0007] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0008] In one aspect, the present application provides a camera drive motor, which can be used, for example, in electronic devices with photo and video recording functions.

[0009] The camera drive motor includes: a base, a base body and a carrier, the base body is located on the base, the base body has a accommodating cavity, the carrier is located in the accommodating cavity, and the carrier is used to install the lens; it also includes an anti-shake drive structure; the anti-shake drive structure connects the base and the base body, and the anti-shake drive structure drives the base body, the carrier and the lens to move along a plane perpendicular to the optical axis of the lens; the anti-shake drive structure includes multiple groups of drive units, and the multiple groups of drive units are arranged around the circumference of the base; each group of drive units includes a movable claw and a fixed claw, and an SMA wire connecting the movable claw and the fixed claw; the movable claw is fixed on the base body, and the fixed claw is fixed on the base.

[0010] The camera drive motor provided in this application realizes optical image stabilization by an anti-shake drive structure including a movable clamping claw, a fixed clamping claw, and an SMA wire connected between the fixed clamping claw and the movable clamping claw. That is, the drive structure is an SMA drive structure. The SMA drive structure has a simple structure and occupies a small area. It can compress the volume of the camera drive motor and realize the miniaturization of the camera module.

[0011] In addition, the camera drive motor also includes multiple balls, which are located between the seat and the base. When the anti-shake drive structure drives the seat, carrier and lens to move along a plane perpendicular to the lens optical axis, the seat slides along the multiple balls.

[0012] By utilizing a plurality of balls arranged between the seat body and the base, the friction coefficient between the seat body and the base can be reduced, thereby improving the camera quality.

[0013] In one possible implementation, the plurality of balls include a first group of balls, a second group of balls, and a third group of balls, any one of the first group of balls, the second group of balls, and the third group of balls includes a plurality of balls, and the first group of balls, the second group of balls, and the third group of balls are arranged at intervals along the circumference of the base.

[0014] The connecting line of the first group of balls, the second group of balls and the third group of balls forms a triangle. In this way, on the basis of reducing the friction coefficient of the seat movement, the stability of the seat movement can also be improved by utilizing the stability of the triangle.

[0015] In one possible implementation, an inlay groove is provided between the seat body and the base, and a plurality of balls are provided in the inlay groove.

[0016] For example, an inlay groove may be provided on the surface of the seat body facing the base, and a plurality of balls may be provided in the inlay groove.

[0017] In one feasible manner, each group of drive units includes a movable claw, a fixed claw and an SMA wire, and an SMA wire is connected between a movable claw and a fixed claw; along the circumference of the base, the movable claws of two adjacent groups of drive units are arranged close to each other and connected together, and the fixed claws of two adjacent groups of drive units are arranged close to each other and separated.

[0018] In some structures, the movable clamping claws of two adjacent groups of driving units can be an integrally formed structural part.

[0019] In one practicable manner, the fixed jaw is located on the lower surface of the base, the movable jaw is located on the lower surface of the seat body, and the extension direction of the SMA wire is parallel to the extension direction of the side of the base.

[0020] In one achievable manner, the anti-shake driving structure includes four groups of driving units, so that the driving structure is a four-wire SMA driving structure.

[0021] In one practicable embodiment, the camera drive motor further includes a magnetic structure, which is disposed between the base and the seat body. When the anti-shake drive structure drives the seat body to slide along the multiple ball bearings, the magnetic structure generates a magnetic force between the base and the seat body.

[0022] By arranging a magnetic attraction structure between the base and the carrier, when the base moves relative to the base, the risk of the base tilting under its own gravity is reduced due to the magnetic attraction force of the magnetic attraction structure.

[0023] In one practicable manner, the magnetic attraction structure includes a magnet and a magnetic attraction sheet, one of the magnet and the magnetic attraction sheet is arranged on the base, and the other is arranged on the base.

[0024] For example, a mounting groove may be provided on the base, and the magnet may be provided in the mounting groove, thereby compressing the thickness of the entire camera drive motor.

[0025] In one possible implementation, the plurality of balls include a plurality of groups of balls, the plurality of groups of balls are spaced apart along the circumference of the base, and a magnetic attraction structure is provided between two adjacent groups of balls.

[0026] In one achievable method, the camera drive motor also includes a focus drive structure, a first elastic member and a first sliding rod, the first elastic member is used to provide elastic force for the carrier and the lens to move from the first position to the second position, the first position to the second position is parallel to the optical axis along the lens, the first position is closer to the base body than the second position, the focus drive structure drives the carrier and the lens to move along the optical axis of the lens between the second position and the third position, and the second position is between the first position and the third position; the axial direction of the first sliding rod is parallel to the optical axis direction of the lens, and the first sliding rod is arranged between the base body and the carrier; when the carrier and the lens move between the first position and the third position, the carrier slides along the axial direction of the first sliding rod.

[0027] The travel of the carrier carrying the lens includes not only the focusing travel between the second position and the third position, but also the elastic member reset travel between the first position and the second position, that is, the carrier carrying the lens moves between the first position and the third position. Compared with the focusing travel only between the second position and the third position, the lens travel of the present application is larger.

[0028] In addition, the camera drive motor of the present application also includes a first slide rod, the axial direction of the first slide rod is consistent with the optical axis direction of the lens, the first slide rod is fixed relative to the base body, and the carrier is slidingly connected to the first slide rod; when the carrier and the lens move between the first position and the third position, the carrier slides along the axial direction of the first slide rod.

[0029] Since the carrier and the first sliding rod are in sliding cooperation, the carrier carrying the lens can slide along the first sliding rod. Therefore, even if the stroke of the carrier and the lens is large, or the driving force that drives the carrier and the lens to move is large, the movement stability of the lens and the carrier is also high, reducing the risk of the carrier and the lens deviating from the optical axis.

[0030] In one possible implementation, the first elastic member is located below the base. When the carrier and the lens are in the first position, the carrier contacts the first elastic member, and the first elastic member deforms, generating an elastic force directed from the first position to the second position.

[0031] The first elastic member is located below the base body. When the carrier and the lens are in the first position, the elastic member is squeezed so that the elastic member generates elastic force.

[0032] In one achievable manner, when the carrier and the lens move between the second position and the third position, the carrier is separated from the first elastic member.

[0033] That is, when the focus driving structure drives the carrier and the lens to move along the optical axis of the lens to achieve automatic focusing, the elastic member will not generate elastic force on the carrier and the lens.

[0034] In one possible implementation, the first elastic member includes a first ear, a second ear, and an elastic section connected between the first ear and the second ear, the first ear and the second ear are both fixed to the base, and the elastic section extends to the bottom of the carrier; when the carrier and the lens are in the first position, the carrier contacts the elastic section, the elastic section is deformed, and an elastic force is generated from the first position to the second position.

[0035] In one practicable manner, the camera drive motor further includes an attraction structure, which is used to generate attraction with the first slide bar; when the carrier and the lens move along the optical axis of the lens, the carrier slides along the axial direction of the first slide bar under the attraction.

[0036] When the carrier carrying the lens moves relative to the base along the optical axis of the lens, in order to make the carrier slide stably along the sliding rod, in this implementation, an attraction structure is set up, which can generate attraction between the attraction structure and the sliding rod. Under the action of this attraction, the carrier will slide along the sliding rod.

[0037] In one possible implementation, the attraction structure includes a magnet, which is fixed on the carrier and disposed close to the first sliding bar, and an attractive force is generated between the magnet and the first sliding bar.

[0038] When the carrier carrying the lens moves relative to the base along the optical axis of the lens, in order to make the carrier slide stably along the sliding rod, in the embodiment of the present application, a magnet is set to generate an attractive force (which can be called an axial holding force) between the magnet and the sliding rod. As a result, the carrier can hold the sliding rod tightly during movement and slide stably along the sliding rod, thereby improving the movement stability.

[0039] In one achievable method, the focus drive structure includes a first magnet and a first coil facing the first magnet, one of the first magnet and the first coil is arranged on the carrier, and the other is arranged on the base; the first slide rod and the magnet are arranged beside the first magnet, and the magnet is closer to the first slide rod than the first magnet.

[0040] Electromagnetic induction is generated between the coil and the magnet in the focus drive structure, and magnetic attraction can be generated between the slide bar and the magnet. In order to weaken the influence between the electromagnetic induction and the magnetic attraction, in the example of this application, the magnet of the attraction structure is closer to the slide bar than the focus drive unit.

[0041] In one achievable method, the focus drive structure includes a first magnet and a first coil facing the first magnet, and a second magnet and a second coil facing the second magnet, and the first magnet and the second magnet are symmetrically arranged about the optical axis of the lens; the camera drive motor also includes a second slide rod; the first slide rod is arranged next to the first magnet, and the second slide rod is arranged next to the second magnet, and the first slide rod and the second slide rod are symmetrically arranged about the optical axis of the lens.

[0042] In one achievable manner, the carrier has an abutting surface that is slidably engaged with the first sliding rod, and when the carrier slides along the axial direction of the first sliding rod, the first sliding rod contacts the abutting surface.

[0043] By making the sliding rod contact with the abutting surface, the carrier can slide stably along the sliding rod.

[0044] In one achievable manner, the camera driving motor further includes a position detection structure, and the position detection structure is used to detect a sliding position of the carrier relative to the first sliding bar.

[0045] The focus position can be determined by detecting the sliding position of the carrier using the position detection structure.

[0046] In one possible implementation, the position detection structure includes an electromagnetic sensor and a magnet, and the magnet in the position detection structure is shared with the first magnet of the focus drive structure, thereby reducing the number of structural components.

[0047] In one achievable method, the camera drive motor further includes an electrical connection structure; the variable aperture, focus drive structure and anti-shake drive structure in the camera module are all electrically connected to the circuit board of the camera drive motor through the electrical connection structure.

[0048] In one achievable method, the electrical connection structure includes: a first spring arm, a second conductive lead and a ground lead, a portion of the first spring arm is connected to the base, another portion of the first spring arm is connected to the seat body, the fixed claw is electrically connected to the circuit board of the camera drive motor through the second conductive lead; the first spring arm is electrically connected to the circuit board of the camera drive motor through the ground lead.

[0049] In one achievable embodiment, the electrical connection structure includes: a second spring arm, a first conductive lead, and a flexible circuit board, wherein a portion of the second spring arm is electrically connected to the variable aperture; the flexible circuit board is used to electrically connect to the circuit board of the camera drive motor, and another portion of the second spring arm is electrically connected to the flexible circuit board through the first conductive lead; and the focus drive structure is electrically connected to the flexible circuit board through the first conductive lead.

[0050] In this example, the variable aperture in the camera module can be electrically connected to the circuit board through the second spring arm, the first conductive lead, and the flexible circuit board.

[0051] In one achievable method, the seat body includes a main body and an extension portion, the extension portion is arranged on a side of the main body close to the base, and the extension portion extends circumferentially along the outer edge of the main body toward away from the main body; the accommodating cavity passes through the main body and the extension portion; there is a gap between the extension portion and the base, and a plurality of balls are arranged in the gap.

[0052] In this way, there is some space outside the main body, which can be used to set other structural components in the camera module.

[0053] On the other hand, the present application also provides a camera drive motor.

[0054] The camera drive motor includes: a base, a base body and a carrier, the base body is located on the base, the base body has a accommodating cavity, the carrier is located in the accommodating cavity, and the carrier is used to install the lens; it also includes an elastic member, a focus drive structure and a sliding rod, the elastic member is used to give the carrier and the lens an elastic force to move from a first position to a second position, the direction from the first position to the second position is parallel to the optical axis of the lens, the first position is closer to the base body than the second position, the focus drive structure is used to drive the carrier and the lens to move along the optical axis of the lens between the second position and the third position, and the second position is between the first position and the third position.

[0055] The travel of the carrier carrying the lens includes not only the focusing travel between the second position and the third position, but also the elastic member reset travel between the first position and the second position, that is, the carrier carrying the lens moves between the first position and the third position. Compared with the focusing travel only between the second position and the third position, the lens travel of the present application is larger.

[0056] In addition, the camera drive motor of the present application also includes a sliding rod, the axial direction of the sliding rod is parallel to the optical axis direction of the lens, and the sliding rod is arranged between the base and the carrier; when the carrier and the lens move between the first position and the third position, the carrier slides along the axial direction of the sliding rod.

[0057] Since the carrier and the slide rod slide together, the carrier carrying the lens can slide along the slide rod. Therefore, even if the stroke of the carrier and the lens is large, or the driving force that drives the carrier and the lens to move is large, the movement stability of the lens and the carrier is also high, reducing the risk of the carrier and the lens deviating from the optical axis.

[0058] In one possible implementation, the elastic member is located below the base. When the carrier and the lens are located at the first position, the carrier contacts the elastic member, causing the elastic member to deform and generate an elastic force directed from the first position to the second position.

[0059] The elastic member is located below the seat body, and when the carrier and the lens are in the first position, the elastic member is squeezed so that the elastic member generates elastic force.

[0060] In one achievable manner, when the carrier and the lens move between the second position and the third position, the carrier is separated from the elastic member.

[0061] That is, when the focus driving structure drives the carrier and the lens to move along the optical axis of the lens to achieve automatic focusing, the elastic member will not generate elastic force on the carrier and the lens.

[0062] In one practicable embodiment, the elastic member includes a first ear, a second ear, and an elastic section connected between the first ear and the second ear, the first ear and the second ear are both fixed to the base, and the elastic section extends to the bottom of the carrier; when the carrier and the lens are in the first position, the carrier contacts the elastic section, the elastic section is deformed, and an elastic force is generated from the first position to the second position.

[0063] In one practicable manner, the camera drive motor further includes an attraction structure, which is used to generate attraction with the slide rod; when the carrier and the lens move along the optical axis of the lens, the carrier slides along the axial direction of the slide rod under the attraction.

[0064] When the carrier carrying the lens moves relative to the base along the optical axis of the lens, in order to make the carrier slide stably along the sliding rod, in this implementation, an attraction structure is set up, which can generate attraction between the carrier and the sliding rod. Under the action of this attraction, the carrier will slide along the sliding rod.

[0065] In one possible implementation, the attraction structure includes a magnet, which is fixed on the carrier and disposed close to the slide bar, and an attractive force is generated between the magnet and the slide bar.

[0066] When the carrier carrying the lens moves relative to the base along the optical axis of the lens, in order to make the carrier slide stably along the sliding rod, in the embodiment of the present application, a magnet is set to generate an attractive force (which can be called an axial holding force) between the magnet and the sliding rod. As a result, the carrier can hold the sliding rod tightly during movement and slide stably along the sliding rod, thereby improving the movement stability.

[0067] In one achievable method, the focus drive structure includes a first magnet and a first coil facing the first magnet, one of the first magnet and the first coil is arranged on the carrier, and the other is arranged on the base; the first slide rod and the magnet are arranged beside the first magnet, and the magnet is closer to the first slide rod than the first magnet.

[0068] Electromagnetic induction occurs between the coil and magnet in the focus drive structure, generating a magnetic attraction between the slider and the magnet. To mitigate the effects of this electromagnetic induction and magnetic attraction, the magnet in the attraction structure is located closer to the slider than the focus drive unit in this example.

[0069] In one achievable method, the focus drive structure includes a first magnet and a first coil opposite to the first magnet, one of the first magnet and the first coil is arranged on the carrier, and the other is arranged on the base; the camera drive motor also includes: a position detection structure, the position detection structure is used to detect the position of the carrier sliding relative to the slide rod; the position detection structure includes an electromagnetic sensor and a magnet, and the magnet in the position detection structure is shared with the first magnet of the focus drive structure.

[0070] In one possible implementation, the carrier has an abutment surface that is in sliding engagement with the slide rod, and when the carrier slides along the axial direction of the slide rod, the slide rod contacts the abutment surface.

[0071] This facilitates the contact between the sliding rod and the abutting surface, and enables the carrier to slide stably along the sliding rod.

[0072] In one achievable method, the camera drive motor further includes an electrical connection structure; the variable aperture, focus drive structure and anti-shake drive structure in the camera module are all electrically connected to the circuit board of the camera drive motor through the electrical connection structure.

[0073] In one achievable method, the electrical connection structure includes: a first spring arm, a second conductive lead and a ground lead, a portion of the first spring arm is connected to the base, another portion of the first spring arm is connected to the seat body, the fixed claw is electrically connected to the circuit board of the camera drive motor through the second conductive lead; the first spring arm is electrically connected to the circuit board of the camera drive motor through the ground lead.

[0074] In one achievable embodiment, the electrical connection structure includes: a second spring arm, a first conductive lead, and a flexible circuit board, wherein a portion of the second spring arm is electrically connected to the variable aperture; the flexible circuit board is used to electrically connect to the circuit board of the camera drive motor, and another portion of the second spring arm is electrically connected to the flexible circuit board through the first conductive lead; and the focus drive structure is electrically connected to the flexible circuit board through the first conductive lead.

[0075] In this example, the variable aperture in the camera module can be electrically connected to the circuit board through the second spring arm, the first conductive lead, and the flexible circuit board.

[0076] In one achievable method, the seat body includes a main body and an extension portion, the extension portion is arranged on a side of the main body close to the base, and the extension portion extends circumferentially along the outer edge of the main body toward away from the main body; the accommodating cavity passes through the main body and the extension portion; there is a gap between the extension portion and the base, and a plurality of balls are arranged in the gap.

[0077] In this way, there is some space outside the main body, which can be used to set other structural components in the camera module.

[0078] On the other hand, the present application also provides a camera module, which includes a lens and a camera drive motor in any of the above-mentioned implementation methods, and the lens is mounted on a carrier.

[0079] The camera module provided in the embodiment of the present application includes the above-mentioned camera drive motor, and the anti-shake drive structure for realizing optical image stabilization includes a movable clamping claw, a fixed clamping claw and an SMA wire connected between the fixed clamping claw and the movable clamping claw, that is, the drive structure is an SMA drive structure. The SMA drive structure has a simple structure and occupies a small area. It can compress the volume of the camera drive motor and realize the miniaturization of the camera module.

[0080] On the other hand, the present application also provides an electronic device, including a camera module and a computing controller in any of the above implementation methods, wherein the computing controller is electrically connected to the camera module.

[0081] The electronic device provided in the embodiment of the present application includes the above-mentioned camera module. Therefore, the electronic device provided in the embodiment of the present application and the camera module of the above-mentioned technical solution can solve the same technical problems and achieve the same expected effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] FIG1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

[0083] FIG2 is a schematic structural diagram of the camera module in FIG1 ;

[0084] FIG3 is a schematic diagram of an exploded structure of the camera module in FIG2 ;

[0085] FIG4 is a schematic structural diagram of a camera drive motor provided in an embodiment of the present application;

[0086] FIG5 is a schematic structural diagram of a camera drive motor provided by an embodiment of the present application with the outer shell removed;

[0087] FIG6 is a schematic diagram of the exploded structure of a camera drive motor provided in an embodiment of the present application;

[0088] FIG7 is a schematic diagram of the exploded structure of a camera drive motor provided in an embodiment of the present application, used to illustrate a focus drive structure;

[0089] FIG8 is a schematic diagram of the exploded structure of a camera drive motor provided in an embodiment of the present application, used to illustrate an anti-shake drive structure;

[0090] FIG9 is a schematic structural diagram of a camera drive motor provided in an embodiment of the present application for illustrating an anti-shake drive structure;

[0091] FIG10 is a schematic structural diagram of a camera drive motor provided in an embodiment of the present application for illustrating an anti-shake drive structure;

[0092] FIG11 is a schematic structural diagram of a camera drive motor provided in an embodiment of the present application for illustrating an anti-shake drive structure;

[0093] FIG12 is a schematic diagram of an exploded structure of a camera drive motor provided by an embodiment of the present application, showing multiple balls;

[0094] FIG13 is a schematic structural diagram of a camera drive motor provided by an embodiment of the present application for displaying multiple sets of balls;

[0095] FIG14 is a schematic diagram of an exploded structure of a camera drive motor provided in an embodiment of the present application, used to illustrate a magnetic attraction structure;

[0096] FIG15 is a structural diagram illustrating a configuration of a magnetic attraction structure of a camera drive motor provided in an embodiment of the present application;

[0097] FIG16 is a structural diagram illustrating the arrangement of multiple sets of balls and multiple sets of magnetic structures of a camera drive motor provided in an embodiment of the present application;

[0098] FIG17 is a structural diagram illustrating a spring arm arrangement of a camera drive motor provided in an embodiment of the present application;

[0099] FIG18 is a structural diagram illustrating a spring arm arrangement of a camera drive motor provided in an embodiment of the present application;

[0100] FIG19 is a schematic structural diagram illustrating a spring arm of a camera drive motor provided in an embodiment of the present application;

[0101] FIG20 is a structural diagram illustrating a spring arm arrangement of a camera drive motor provided in an embodiment of the present application;

[0102] FIG21 is a schematic structural diagram of a camera drive motor provided in an embodiment of the present application;

[0103] FIG22 is a schematic structural diagram of a camera drive motor provided in an embodiment of the present application;

[0104] FIG23 is a schematic structural diagram of a camera drive motor provided in an embodiment of the present application for demonstrating the movement of a carrier and a lens;

[0105] FIG24 is a structural diagram illustrating the arrangement of elastic members of a camera drive motor provided in an embodiment of the present application;

[0106] FIG25 is a schematic diagram of the exploded structure of a camera drive motor provided in an embodiment of the present application, illustrating the arrangement of elastic members;

[0107] FIG26 is a schematic structural diagram illustrating an elastic member of a camera drive motor provided in an embodiment of the present application;

[0108] FIG27 is a structural diagram illustrating the arrangement of elastic members of a camera drive motor provided in an embodiment of the present application;

[0109] FIG28 is a structural diagram illustrating a configuration of a slide bar of a camera drive motor provided in an embodiment of the present application;

[0110] FIG29 is a schematic diagram of the exploded structure of a camera drive motor provided in an embodiment of the present application, illustrating the configuration of a slide bar;

[0111] FIG30 is a schematic diagram of a circuit structure for demonstrating a position detection structure of a camera drive motor provided in an embodiment of the present application;

[0112] FIG31 is a structural diagram illustrating a spring arm arrangement of a camera drive motor provided in an embodiment of the present application;

[0113] FIG32 is a schematic structural diagram illustrating a spring arm of a camera drive motor provided in an embodiment of the present application;

[0114] FIG33 is a schematic structural diagram of a camera drive motor for displaying a base provided by an embodiment of the present application;

[0115] FIG34 is a schematic diagram of the exploded structure of a camera drive motor for displaying a base provided by an embodiment of the present application;

[0116] FIG35 is a schematic structural diagram illustrating an electrical connection structure of a camera drive motor provided in an embodiment of the present application;

[0117] FIG36 is a schematic structural diagram illustrating an electrical connection structure of a camera drive motor provided in an embodiment of the present application;

[0118] FIG37 is a schematic structural diagram illustrating an electrical connection structure of a camera drive motor provided in an embodiment of the present application;

[0119] FIG38 is a schematic structural diagram illustrating the electrical connection structure of a camera drive motor provided in an embodiment of the present application;

[0120] FIG39 is a schematic structural diagram illustrating the electrical connection structure of a camera drive motor provided in an embodiment of the present application;

[0121] FIG40 is a schematic structural diagram illustrating an electrical connection structure of a camera drive motor provided in an embodiment of the present application;

[0122] Figure 41 is a schematic diagram of the decomposed structure of a camera drive motor provided in an embodiment of the present application. DETAILED DESCRIPTION

[0123] An embodiment of the present application provides an electronic device, which is a type of electronic device with a shooting function. The electronic device in the embodiment of the present application can be a mobile phone, a tablet computer (pad), a laptop computer, a smart home, a smart wearable device (for example, a smart watch, a smart bracelet, smart glasses, a smart helmet), a virtual reality (VR) electronic device, an augmented reality (AR) electronic device, etc. The electronic device can also be a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, an in-vehicle device, an electronic device in a 5G network, or an electronic device in a future-evolved public land mobile communication network (PLMN), etc., and the embodiment of the present application is not limited to this.

[0124] In some embodiments, to enable the above-mentioned electronic device to realize a display function, as shown in FIG1 , the electronic device 01 provided in the embodiment of the present application may include a display screen 02, a rear cover 03 located behind the display screen 02 (arranged opposite to the display surface of the display screen 02), and a middle frame 04 located between the display screen 02 and the rear cover 03. The middle frame 04 can support the display screen 02.

[0125] The display screen 02 can be a liquid crystal display (LCD), an organic light emitting diode (OLED) display screen, a micro or mini light-emitting diode (LED) display screen, or a quantum dot light emitting diode (QLED) display screen, etc. This application does not limit the type of the above display screens.

[0126] The electronic device 01 may also include a processor 05 electrically connected to the display screen 02. The processor 05 may be located on a side of the middle frame 04 away from the display screen 02. The rear housing 03 is fastened to the middle frame 04, creating a mounting space between the rear housing 03 and the middle frame 04 for accommodating components such as the processor 05 and a battery. The processor 05 may provide display data to the display screen 02 to drive the display screen 02 to display images.

[0127] For example, the processor 05 may include one or more processing units, for example, the processor may include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Different processing units may be independent devices or integrated into one or more processors.

[0128] In addition, the above-mentioned electronic device 01 may also include a gyro sensor, a hall sensor, an external memory interface, an internal memory, a universal serial bus (USB) interface, a charging management module, a power management module, a battery, an antenna, a mobile communication module, a wireless communication module, an audio module, a speaker, a receiver, a microphone, a headphone interface, a sensor module, buttons and a camera, etc., which are electrically connected to the processor 05.

[0129] In some embodiments, in order to enable the electronic device 01 to realize the shooting function, the electronic device 01 provided in the embodiment of the present application may further include a camera module 10, which may be a front camera module or a rear camera module. The front camera module may be arranged on the back of the display screen 02 shown in Figure 1, with the photosensitive surface of the front camera module located on the display surface side of the display screen 02. The rear camera module may be arranged on the side of the middle frame 04 away from the display screen 02, that is, in the installation space formed between the middle frame 04 and the rear shell 03, with the photosensitive surface of the rear camera module located on the back of the electronic device 01.

[0130] For example, the front camera module or the rear camera module may include multiple camera modules 10 as shown in Figure 1. Taking the rear camera module as an example, the rear housing 03 is provided with an opening 06 for exposing a portion of the camera module 10. In addition, the electronic device 01 also includes a lens cover 07 that snaps onto the camera module 10 to protect it. The lens cover 07 has a camera hole 08 for exposing the lens of the camera module 10.

[0131] The camera module 10 can be one or more of a standard camera module, a telephoto camera module, a wide-angle camera module, an ultra-telephoto camera module, and an ultra-wide-angle camera module. This application does not limit the number of camera modules 10. FIG1 illustrates an example in which a rear-facing camera module includes three camera modules 10.

[0132] 2 and 3 , FIG. 2 is an assembly diagram of the camera module 10 according to an embodiment of the present application, and FIG. 3 is an exploded diagram of the camera module 10 according to an embodiment of the present application.

[0133] The camera module 10 includes an iris 20, a lens 40, and a camera drive motor 41. For ease of description, an XYZ coordinate system is established in the accompanying drawings, where the Z direction corresponds to the optical axis O1-O2 of the lens 40, i.e., the thickness direction of the camera module 10. The XY plane formed by the X and Y directions is perpendicular to the optical axis O1-O2 of the lens 40.

[0134] The optical axis O1-O2 direction may refer to the direction in which the optical system of the lens 40 transmits light. For example, for a symmetrical lens 40, the optical axis O1-O2 may coincide with the rotational centerline of the optical system of the lens 40. The optical axis O1-O2 of the lens 40 may serve as the optical axis of the camera module 10, and the optical axis of the iris 20 may overlap with the optical axis of the camera module 10.

[0135] The lens 40 comprises a lens barrel and an optical lens assembly mounted therein. The optical lens assembly is used to transmit light from the scene and form an image of the scene being photographed. By designing the structure and shape and size of the optical lens assembly, lenses with different characteristics, such as wide-angle and telephoto, can be obtained. By replacing different lenses, camera modules with different characteristics, such as wide-angle and telephoto, can be assembled.

[0136] The variable aperture 20 includes a driving device and a plurality of blades. The driving device is used to drive the plurality of blades, thereby adjusting the size of the light-inlet hole formed by the plurality of blades, and further adjusting the amount of light entering.

[0137] The camera drive motor 41 can be used to drive the lens 40 to move along the optical axis O1-O2 to achieve automatic focus of the lens; or, it can also be used to drive the lens 40 to move in the XY plane to achieve anti-shake compensation when the camera module shakes in any direction of the electronic device; or, it can not only achieve automatic focus of the lens, but also achieve anti-shake compensation.

[0138] In order to perform photoelectric conversion on the light incident on the camera module 10 to generate image information, as shown in FIG3 , the camera module 10 may further include a filter 801, an image sensor 802, and a circuit board 80. The image sensor 802 is disposed on the circuit board 80 and is electrically connected to the circuit board 80.

[0139] For example, the image sensor 802 can be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The image sensor 802 is disposed at the focal plane of the camera module 10 so as to receive the light image of the subject focused by the lens 40. The image sensor 802 can include multiple photosensitive units, each of which converts the amount of received light into an electrical signal proportional to the amount of light.

[0140] Furthermore, to improve the effective resolution and color reproduction of image sensor 802, filter 801 can be disposed on the light-entering side of image sensor 802. For example, filter 801 can be an infrared filter that removes infrared light from ambient light while transmitting visible light. Alternatively, filter 801 can be a dual-bandpass filter that selectively transmits wavelengths within two regions of ambient light, such as visible light and infrared light, visible light and ultraviolet light, or ultraviolet light and infrared light.

[0141] To more clearly describe the orientation of the structural components, the present application illustrates the direction of light propagation in the camera module in some of the following exemplary structural diagrams. Light entering the variable aperture 20 is referred to as incident light, while light exiting the lens 40 and entering the filter 801 is referred to as outgoing light. For example, in FIG3 , the black dashed line with an arrow indicates the direction of light propagation and depicts both incoming and outgoing light.

[0142] Refer to Figure 4, which shows the structure of a camera drive motor according to an embodiment of the present application. In this embodiment, the camera drive motor 41 includes a housing 411, which is used to protect the internal structure of the camera drive motor from water and dust. When assembled into the electronic device, the camera drive motor is fixed within the electronic device via the housing.

[0143] An assembly cavity 412 is provided in the housing 411 , and an opening communicating with the assembly cavity 412 is provided on the housing 411 . The shape of the opening includes but is not limited to circular, square, elliptical and polygonal.

[0144] The assembly cavity 412 is used to accommodate the lens 40 and at least part of the variable aperture 20. A certain avoidance gap is maintained between the edge of the shell at the opening and the lens 40 and the variable aperture 20 to avoid the lens 40 from tilting and moving in any direction.

[0145] FIG5 is a structural diagram of the camera driving motor 41 without the outer shell 411 according to an embodiment of the present application, and FIG6 is an exploded diagram of FIG5 . FIG6 partially decomposes the camera driving motor, but not completely decomposes it.

[0146] In this embodiment, as shown in FIG5 , the camera driving motor 41 further includes a base 413 , a base body 414 and a carrier 415 . The base 413 , the base body 414 and the carrier 415 may be disposed within the housing 411 of the camera driving motor. The base body 414 is located on the base 413 .

[0147] As shown in FIG6 , a receiving cavity 416 is formed in the base body 414 , and the carrier 415 is located in the receiving cavity 416 . The carrier 415 has a lens mounting hole 417 , and the lens mounting hole 417 is used to mount the lens 40 .

[0148] In addition to the base 413, the seat body 414 and the carrier 415, the camera drive motor 41 may also include a focus drive structure. The focus drive structure can be located between the seat body 414 and the carrier 415. The focus drive structure is used to drive the carrier 415 to move relative to the seat body 414 along the axial direction (Z direction) of the lens mounting hole, so as to drive the lens 40 in the lens mounting hole 417 to move along the optical axis O1-O2, thereby forming an autofocus camera module.

[0149] It can be understood that: when the camera module provided in the embodiment of the present application is automatically focusing, the base 414 is the fixed part, the carrier 415 is the movable part, and the lens 40 is fixedly connected to the movable part carrier 415. Driven by the focus drive structure, when the movable part moves along the Z direction relative to the fixed part, the lens 40 can be driven to move along the Z direction at the same time to achieve automatic focusing.

[0150] As shown in Figure 7, Figure 7 exemplifies a possible structure of a focus drive structure. The focus drive structure includes multiple groups of focus drive units, which are arranged at intervals along the circumference of the carrier 415. In some examples, the multiple groups of focus drive units can be symmetrically arranged about the optical axis O1-O2 of the lens.

[0151] For example, in Figure 7, two groups of focus drive units are included, and the two groups of focus drive units include: focus drive unit 418A and focus drive unit 418B. Focus drive unit 418A and focus drive unit 418B are arranged relative to each other. For example, focus drive unit 418A and focus drive unit 418B can be symmetrically arranged about the optical axis O1-O2 of the lens.

[0152] In this example, each focus drive unit includes a magnet 4181 and a coil 4182, one of which is disposed on the base 414 and the other on the carrier 415. For example, in FIG7 , the magnet 4181 is disposed on the carrier 415, and the coil 4182 is disposed on the base 414.

[0153] There are many ways to dispose the magnet 4181 on the carrier 415. For example, in the example shown in FIG7 , a first mounting groove 419 is formed on the wall of the carrier 415 facing the base 414, and the magnet 4181 is located in the first mounting groove 419.

[0154] FIG. 7 shows an example of a layout of the coil 4182 . A second mounting groove 420 is provided on the wall of the base 414 facing the carrier 415 , and the coil 4182 is located in the second mounting groove 420 .

[0155] In the example of this application, when the camera module is automatically focusing, the Ampere force generated by the magnet 4181 and the coil 4182 causes the carrier 415 carrying the lens to move up and down along the optical axis O1-O2 of the lens, thereby achieving automatic focusing.

[0156] In some optional structures, a focus drive unit can include multiple magnets 4181. Each of the multiple magnets 4181 can generate a magnetic field with the energized coil 4182, thereby increasing the strength of the generated magnetic field. The multiple magnets 4181 can be arranged in a Halbach array structure as shown in Figure 7.

[0157] The camera drive motor of the example of this application includes not only a focus drive structure for realizing autofocus, but also an anti-shake drive structure for realizing optical image stabilization.

[0158] In the example of this application, the anti-shake driving structure connects the base 413 and the seat body 414. The anti-shake driving structure drives the seat body 414, the carrier 415 and the lens 40 to move along the XY plane perpendicular to the optical axis O1-O2 of the lens to achieve anti-shake compensation.

[0159] The base 414 in the example of this application not only serves as a fixed part in realizing the autofocus function, but also serves as a moving part in realizing the optical image stabilization function. Compared with separately setting the fixed and moving parts for autofocus, and the fixed and moving parts for optical image stabilization, this application can reduce the number of structural parts, compress the volume of the entire camera drive motor, and realize the miniaturized design of the camera drive motor.

[0160] In some embodiments, as shown in FIG8 , which exemplarily illustrates an achievable structure of an anti-shake drive structure, the anti-shake drive structure may include multiple groups of anti-shake drive units, which may be arranged around the circumference of the base.

[0161] For example, in Figure 8, the anti-shake drive structure includes four groups of anti-shake drive units: anti-shake drive unit 421A, anti-shake drive unit 421B, anti-shake drive unit 421C, and anti-shake drive unit 421D. Anti-shake drive unit 421A, anti-shake drive unit 421B, anti-shake drive unit 421C, and anti-shake drive unit 421D are arranged along the circumference of the base.

[0162] Continuing with FIG8 , each anti-shake drive unit includes a fixed jaw 4211, a movable jaw 4213, and a shape memory alloy (SMA) wire 4212 connecting the fixed jaw 4211 and the movable jaw 4213. One end of the SMA wire 4212 is connected to the movable jaw 4213, and the other end is connected to the fixed jaw 4211.

[0163] The anti-shake drive structure of the present application example uses an SMA drive assembly to form an SMA drive motor. The SMA drive assembly has the characteristics of large driving force and small size, so the size of the entire camera drive motor can be compressed.

[0164] In some possible structures, as shown in FIG8 , each anti-shake drive unit may include a movable claw 4213, a fixed claw 4211, and an SMA wire 4212, with an SMA wire 4212 connected between a movable claw 4213 and a fixed claw 4211. The drive structure of the example in this application is a 4-wire SMA drive assembly, which has a simple structure and occupies a small area.

[0165] Continuing with FIG8 , the movable claws 4213 of two adjacent sets of anti-shake drive units are arranged close together and connected together. For example, the anti-shake drive unit 421A and the anti-shake drive unit 421D are adjacent to each other, and the movable claws 4213 of the anti-shake drive unit 421A and the movable claws 4213 of the anti-shake drive unit 421D are connected together. Alternatively, in some examples, the movable claws 4213 of the anti-shake drive unit 421A and the movable claws 4213 of the anti-shake drive unit 421D are integrally formed.

[0166] As shown in Figure 8 , the fixed claws 4211 of two adjacent groups of anti-shake drive units are arranged close to each other and separated. For example, the anti-shake drive unit 421A and the anti-shake drive unit 421B are adjacent to each other, and the fixed claws 4211 of the anti-shake drive unit 421A and the fixed claws 4211 of the anti-shake drive unit 421B are close to each other, and the two fixed claws 4211 are independent structural components.

[0167] In some examples, the fixed jaw 4211 can serve as a terminal for a first electrode of the SMA wire 4212, and the movable jaw 4213 can serve as a terminal for a second electrode of the SMA wire 4212. For example, the fixed jaw 4211 can serve as a terminal for the positive electrode of the SMA wire, and the movable jaw 4213 can serve as a terminal for the negative electrode of the SMA wire.

[0168] As shown in Figure 8, the anti-shake drive unit 421A and the anti-shake drive unit 421D are arranged adjacent to each other, and the movable claw 4213 of the anti-shake drive unit 421A and the movable claw 4213 of the anti-shake drive unit 421D are connected together. For example, the fixed claw 4211 of the anti-shake drive unit 421A serves as the positive terminal, the fixed claw 4211 of the anti-shake drive unit 421D also serves as the positive terminal, and the connected movable claw 4213 of the anti-shake drive unit 421A and the movable claw 4213 of the anti-shake drive unit 421D serve as the negative terminal. In this application example, the SMA wire 4212 is a wire structure made of SMA. SMA can be a nickel-titanium alloy material that shrinks when heated and expands when cooled. When no current is flowing through the SMA wire, the SMA wire is in a relaxed state. When current flows into the SMA wire, the SMA wire converts part of the electrical energy into heat energy due to its resistance characteristics. The SMA wire contracts under the action of its own heat energy to apply tension to the base 414, thereby driving the base 414 to move in any direction around to achieve optical image stabilization.

[0169] By defining the positional relationship of the four SMA wires, the SMA drive assembly can control the electrical signals within the four SMA wires, causing the combined force of the four SMA wires on the base to move along the XY plane. Because the base 414 and the carrier 415 carrying the lens can simultaneously translate relative to the base 413, the SMA drive assembly can drive the lens assembly to translate, enabling optical image stabilization of the camera module.

[0170] There are many ways to arrange the movable claw 4213 , the fixed claw 4211 and the SMA wire 4212 of the anti-shake driving structure 421 .

[0171] As shown in Figures 9 and 10, Figure 9 shows an exploded view of the anti-shake drive structure and other structural components, and Figure 10 is a visible view of the structure shown in Figure 9 after being rotated 180 degrees.

[0172] 9 and 10 , the fixed claw 4211 is located on the lower surface of the base 413 and is fixedly connected to the base 413. It can be understood that the base 413 has an upper surface and a lower surface that are opposite to each other, the upper surface is close to the light incident side, and the lower surface is close to the light exit side, and the fixed claw 4211 is fixed to the lower surface of the base 413.

[0173] 9 and 10 , the movable claw 4213 is located on the lower surface of the base 414 and is fixedly connected to the base 414. The lower surface of the base 414 can be understood as the surface close to the light emitting side.

[0174] As shown in Figure 11, Figure 11 is a feasible structure of the movable clamping claw 4213 given in the present application, wherein the movable clamping claw 4213 includes a first part 4213A and a second part 4213B, and a third part 4213C connecting the first part 4213A and the second part 4213B. The first part 4213A and the second part 4213B are located on the lower surface of the base 413 and are respectively connected to the SMA wire 4212. The third part 4213C is located on the lower surface of the seat body 414 and is fixedly connected to the seat body 414.

[0175] In order to securely connect the third portion 4213C of the movable jaw 4213 to the base 414, as shown in Figures 9 and 10, a cavity 422 may be provided on the base 413, and an extension 423 that can pass through the cavity 422 may be provided on the base 414. The third portion 4213C protrudes toward the cavity 422, and the third portion 4213C extends below the extension 423 and is securely connected to the extension 423. The two black dashed lines shown in Figures 9 and 10 illustrate the connection between the extension 423 and the movable jaw 4213.

[0176] 9 and 10 , the SMA wire 4212 is located on the lower surface of the base 413 . In this example, the extension direction of the SMA wire 4212 is parallel to the extension direction of the side of the base.

[0177] When the camera module performs the optical image stabilization function, the carrier 415 carrying the lens assembly and the base 414 will move relative to the base 413. There is friction between the carrier 415 and the base 413. The magnitude of the friction affects the camera effect. For example, when the friction is large, the preview image of the camera module will have slight jitter.

[0178] The following is a brief introduction to how friction affects camera quality.

[0179] In the anti-shake drive structure, the position of the lens is controlled by the actual length difference between two opposing SMA wires. The length of the SMA wire is related to the resistance. Within a certain range, the length of the SMA wire and the resistance are linearly related. That is, the longer the SMA wire, the greater the resistance. Therefore, when different drive control signals are given to the four SMA wires shown, the resistance difference between the two SMA wires in relative positions can be used as a feedback signal of the SMA wire length difference.

[0180] Due to friction between the base 414 and the base 413, there is a deviation between the target position of the control signal and the actual movement position of the lens. Therefore, feedback and compensation are continuously performed between the resistor feedback signal and the drive control signal. Therefore, when there is a large friction force opposite to the direction of motion, the lens, which should move precisely to a certain position, is actually slightly off due to resistance. At this point, the control system detects through the resistor that the lens has not moved to the theoretical position and then increases the drive signal slightly, increasing the tension of the SMA cable to move the lens to the theoretical position. Due to the presence of friction, this compensation is greater than when there is no friction. However, there is the possibility of overcompensation. When the compensation is too large, it reduces the driving force of the SMA cable, causing the lens to move in the opposite direction, closer to the theoretical position. The direction of the friction then changes, which has a greater impact on the compensation effect than when there is no friction. The presence of friction reduces control and compensation accuracy. Because the resistor feedback and compensation are performed in real time, that is, the compensation action is continuous, the ultimate result is that the actual lens position fluctuates back and forth from the theoretical position, causing slight jitter in the camera module preview image. Due to the existence of friction, this vibration is more severe than when there is no friction or very little friction.

[0181] In order to reduce friction and weaken shaking, the embodiments of the present application provide some structures that can reduce the friction coefficient of the seat 414 movement, thereby improving the optical image stabilization performance and improving the picture quality.

[0182] As shown in Figure 12, an exploded view of the base 413 and the base 414 is shown. This exploded view shows the structure with the light-entering side at the bottom and the light-emitting side at the top. Multiple ball bearings 424 are positioned between the base 414 and the base 413. When the anti-shake drive structure drives the base 414 and the carrier 415 to move relative to the base 413 along an XY plane perpendicular to the optical axis, the base 414 can slide along the multiple ball bearings 424.

[0183] It can be understood that, as shown in FIG12 , a plurality of balls 424 are provided between two opposing surfaces of the base 413 and the seat body 414 .

[0184] By arranging multiple balls 424 between the base 413 and the seat body 414, the friction coefficient during the movement of the seat body 414 can be reduced, the stroke control accuracy of the anti-shake drive structure is higher, the shake amount of the lens can be reduced, and the shooting effect can be improved.

[0185] The multiple balls in the examples of this application can be arranged in various ways. For example, in the example of Figure 13, a mounting groove 425 can be provided on the base 414, and the balls are arranged in the mounting groove 425 and can roll in the mounting groove 425. For another example, a mounting groove can be provided on the surface of the base 413 facing the base 414, and the balls are located in the mounting groove.

[0186] As shown in FIG13 , the embedding groove 425 of this example is provided on the seat body 414 , the portion of the ball 424 located in the embedding groove 425 protrudes from the embedding groove 425 , and the portion of the ball 424 protruding from the embedding groove 425 contacts the base 413 .

[0187] During the optical image stabilization process, in order to improve the stability of the movement of the seat 414 relative to the base 413, as shown in Figure 13, multiple groups of balls are included, each group of balls includes multiple balls, and the multiple groups of balls can be arranged at intervals along the circumference of the seat 414, so that the seat 414 can move smoothly.

[0188] For example, in FIG. 13 , a first group of balls 424A, a second group of balls 424B and a third group of balls 424C are included. The first group of balls 424A, the second group of balls 424B and the third group of balls 424C are spaced apart along the circumference of the seat body 414 .

[0189] As shown in FIG13 , the connection between the first group of balls 424A, the second group of balls 424B and the third group of balls 424C can be in the form of a triangle, for example, an equilateral triangle. By utilizing the stability of the triangle, the smoothness of the movement of the seat body 414 can be further improved.

[0190] In some feasible structures, the number of balls in each group can be the same or different.

[0191] The arrangement of the multiple balls in each ball group can be the same or different.

[0192] In this example, when the seat 414 moves relative to the base 413, in order to reduce the risk of the seat 414 tilting under its own weight, as shown in Figure 14, the exploded view shown in Figure 14 is a structural diagram with the light-incoming side at the bottom and the light-emitting side at the top. In this example, a magnetic structure 426 can also be provided between the base 413 and the seat 414. This can be understood as follows: as shown in Figure 14, the magnetic structure 426 is provided between the two opposing surfaces of the base 413 and the seat 414.

[0193] When the anti-shake drive structure drives the seat 414 to slide along the multiple ball bearings in the XY plane, the magnetic structure 426 generates a magnetic force F between the base 413 and the seat 414. By utilizing this magnetic force F, the seat 414 can be urged to have an attractive force toward the base 413 during the movement, thereby reducing the probability of the moving seat 414 tilting.

[0194] In some examples, as shown in FIG15 , the magnetic structure 426 may include a magnetic sheet 426A and a magnet 426B, with one of the magnetic sheet 426A and the magnet 426B being disposed on the base 413 and the other being disposed on the base 414. For example, in FIG15 , the magnet 426B may be disposed on the base 413 and the magnetic sheet 426A disposed on the base 414.

[0195] There is a gap between the magnetic sheet 426A and the magnet 426B. The attraction between the magnetic sheet 426A and the magnet 426B is used to enable the base 414 to move smoothly in the XY plane.

[0196] In order to reduce the area occupied by the magnet and the magnetic sheet, for example, as shown in FIG15 , a placement groove may be provided in the base 413 , and the magnet 426B may be provided in the placement groove.

[0197] In other examples, a mounting groove may be provided in the base 414, and the magnetic sheet 426A may be provided in the mounting groove of the base, thereby reducing the space occupied by the magnetic sheet 426A and the magnet 426B, and further reducing the thickness of the entire camera motor.

[0198] The magnetic structures 426 may be provided in multiple groups, and the multiple groups of magnetic structures 426 are arranged at intervals along the circumference of the base 414. For example, the multiple groups of magnetic structures may be arranged symmetrically about the optical axis O1-O2 of the lens.

[0199] In some configurations, when multiple sets of balls and magnetic structures are present, as shown in Figure 16 , one or more sets of magnetic structures 426 can be positioned between two adjacent sets of balls 424. These sets of balls and magnetic structures can be arranged alternately along the circumference of the base 414. This can further enhance the smoothness of the base's movement, reduce vibration, and optimize image quality.

[0200] 17 and 18 , which illustrate the structure of the camera drive motor from different angles. In this example, the camera drive motor may further include a first spring arm 427 , a portion of which is connected to the seat 414 and another portion of which is connected to the base 413 .

[0201] In some examples, as shown in FIG19 , FIG19 exemplarily illustrates a structure of the first spring arm 427. The first spring arm 427 may be L-shaped. The first spring arm 427 includes a first section 4271, a second section 4273, and a connecting portion 4272 connecting the first section 4271 and the second section 4273.

[0202] Continuing to refer to Figure 19, the end of the first section 4271 away from the connecting portion 4272 and the end of the second section 4273 away from the connecting portion 4272 are connected to the movable seat body 414 and can be called the movable end 427A. The connecting portion 4272 is connected to the base 413 and can be called the fixed end 427B.

[0203] In some installation methods, the first spring arm 427 can be disposed between two opposing surfaces of the base 413 and the seat body 414 .

[0204] In some other installation methods, as shown in FIG. 20 , the first spring arm 427 may be disposed on a side of the seat body 414 away from the base 413 .

[0205] Since the first spring arm 427 is fixedly connected to the base 413 , as shown in FIG20 , a boss 428 can be provided on the edge of the base 413 , and the boss 428 extends toward the base body 414 , and the connecting portion 4272 of the first spring arm 427 is fixedly connected to the boss 428 , so that the first spring arm 427 is fixedly connected to the base 413 .

[0206] In the embodiment of the present application, the SMA wire is energized to drive the carrier 415, the base 414 and the lens to move. During the anti-shake process, the first spring arm 427 can balance and buffer the force on the base 414, making the movement of the base 414 more stable.

[0207] In addition, when the SMA wire is powered off, the first spring arm can generate elastic force by deforming during the process of driving the base to move when the SMA wire is powered on, thereby driving the base 414 and the carrier 415 carrying the lens to move to the initial position.

[0208] In some examples, returning to Figures 17 and 18, two first spring arms 427 can be included. The two first spring arms can be symmetrically arranged about O1-O2 of the lens. The two symmetrically arranged first spring arms can generate the same deformation when the base 414 moves.

[0209] As shown in Figure 17, the two first spring arms can be respectively referred to as spring arm A and spring arm B, the first section 4271 of spring arm A is parallel to the first side of the base body 414, and the second section 4273 of spring arm A is parallel to the second side of the base body 414; the first section 4271 of spring arm B is parallel to the third side of the base body 414, and the second section 4273 of spring arm B is parallel to the fourth side of the base body, wherein the first side is opposite to the third side, and the second side is opposite to the fourth side.

[0210] It can be understood that: the first section of spring arm A is arranged opposite to the first section of spring arm B, and the shape of the first section of spring arm A can be the same as the shape of the first section of spring arm B; the second section of spring arm A is arranged opposite to the second section of spring arm B, and the shape of the second section of spring arm A can be the same as the shape of the second section of spring arm B; so that the two spring arms can be arranged symmetrically about the optical axis of the lens, thereby making the elastic force symmetrical.

[0211] In the embodiment of the present application, as shown in Figures 21 and 22, Figure 22 is a view from the bottom surface of Figure 21. The ball 424 for reducing the friction coefficient of the seat 414 and the magnetic structure 426 for reducing the tilt of the seat 414 are both arranged between the two opposite surfaces of the base 413 and the seat 414. It can be understood that they are arranged on the upper surface of the base 413, the fixed claw 4211 and the SMA wire 4212 are arranged on the lower surface of the base 413, and the first spring arm 427 is arranged on the side of the seat 414 away from the base 413. In other words, the anti-shake drive structure 421, the ball 424 and the magnetic structure 426, as well as the first spring arm 427 are not arranged in a centralized manner, but are distributed in different positions. In this way, the space at different positions can be fully utilized, and interference between multiple structural components can be avoided.

[0212] As shown in FIG23 , FIG23 simply illustrates the positional relationship between the base 414, the carrier 415, and the lens 40. Since the camera drive motor has a dimension in its thickness direction (such as the Z direction in FIG23 ), as terminal devices become smaller and thinner, the thickness of the camera drive motor needs to be smaller and smaller. Alternatively, when the camera drive motor is not working, that is, when the camera drive motor is not performing any of the autofocus or anti-shake compensation functions, the thickness of the camera drive motor is relatively small. When the camera drive motor is working, the thickness can be adjusted to a preset dimension to ensure the normal use of autofocus and anti-shake compensation.

[0213] In some embodiments, the electronic device may include a pre-stress drive structure. When the camera drive motor is not working, as shown in (a) of Figure 23, the pre-stress drive structure can apply a pre-stress F toward the base to the carrier 415 and the lens 40 to compress the thickness of the entire camera drive motor. For example, the carrier 415 and the lens 40 can be pressed to a first position, as shown in (b) of Figure 23. When the camera drive motor needs to work, the carrier 415 and the lens 40 can be moved to a second position. The direction from the first position to the second position is parallel to the optical axis O1-O2 of the lens, and the first position is closer to the base 414 than the second position.

[0214] In this way, when the carrier 415 and the lens 40 are compressed to the first position, the thickness of the entire camera drive motor can be compressed. When the carrier 415 and the lens 40 move to the second position, the normal use of autofocus and anti-shake compensation is guaranteed.

[0215] In some camera drive structures, such as (a) and (b) of FIG. 23 , the distance X1 between the first position and the second position can be greater than 500 μm, which can significantly reduce the thickness of the camera drive motor when not working.

[0216] When the camera drive motor needs to operate, the preload force F applied by the preload drive structure of the electronic device to the carrier 415 and lens 40 is removed. To enable the carrier 415 and lens 40 to move from the first position to the second position, an elastic member 50 may be provided in the camera drive motor, as shown in FIG23 . The elastic member 50 is used to apply the elastic force f to the carrier 415 and lens 40 to move from the first position to the second position.

[0217] When autofocus needs to be performed, as shown in (b) and (c) of Figure 23, the carrier 415 carrying the lens 40 can be moved between the second position and the third position under the drive of the focus drive structure to achieve focusing, wherein the second position is between the first position and the third position.

[0218] When the carrier 415 and the lens 40 move between the second position and the third position, the carrier 415 is separated from the elastic member 50 , and the elastic member 50 does not generate elastic force on the carrier 415 and the lens 40 .

[0219] As shown in Figures 24 and 25, Figure 24 illustrates one method for installing the elastic member 50, while Figure 25 is an exploded view of Figure 24. In this example, the elastic member 50 can be positioned below the carrier 415. When the carrier 415 and the lens 40 are in the first position, the carrier 415 contacts the elastic member 50, causing the elastic member 50 to deform, generating an elastic force directed from the first position to the second position. Under the elastic force of the elastic member 50, the carrier 415 and the lens 40 can move from the first position to the second position, away from the base.

[0220] In some examples, as shown in FIG. 26 , the elastic member 50 includes a first lug 501 , a second lug 502 , and an elastic segment 503 connected between the first lug 501 and the second lug 502 .

[0221] As shown in FIG. 24 , the first ear 501 and the second ear 502 can be fixed on the base 414 , and the elastic section 503 can extend to the bottom of the carrier 415 .

[0222] For example, as shown in FIG25 , a protrusion 51 can be provided on the carrier 415. When the carrier 415, carrying the lens 40, moves along the optical axis O1-O2 to a first position under the action of a preload F exerted by the preload drive structure on the carrier 415 and the lens 40, the elastic segment 503 of the elastic member 50 contacts the protrusion 51, causing the elastic segment 503 to deform, generating an elastic force directed from the first position to the second position. When the preload drive structure removes the preload F exerted on the carrier 415 and the lens 40, the elastic force of the elastic segment 503 causes the carrier 415 and the lens 40 to move from the first position to the second position.

[0223] As shown in FIG. 24 and FIG. 25 , in some examples, a plurality of elastic members 50 may be included. The plurality of elastic members 50 may be symmetrically arranged about the optical axis O1 - O2 so that the elastic force is symmetrical, and the carrier 415 and the lens 40 move stably under the action of the symmetrical elastic force.

[0224] In some camera drive structures, returning to FIG. 23 , as shown in FIG. 23 (b) and (c), when the camera module is autofocusing, the distance X2 between the second position and the third position can be greater than 1000 μm. Furthermore, the distance X1 between the first position and the second position can be greater than 500 μm. Thus, when the carrier and lens assembly move between the first position and the third position, the travel (X1 + X2) reaches greater than 1500 μm.

[0225] It can be understood that in this example, the travel of the carrier 415 carrying the lens 40 includes not only the buffering travel under the elastic force of the elastic member 50, but also the focusing travel under the driving force of the focus drive structure. Compared to the travel including only the focusing travel, the travel of the lens 40 and carrier 415 in this example is greater.

[0226] In order to improve the stability of movement when the carrier 415 carrying the lens 40 has a larger stroke, as shown in Figures 27 and 28, the camera drive motor can also include a slide rod 53, the axial direction of the slide rod 53 is parallel to the optical axis O1-O2 direction of the lens, the slide rod 53 is fixed relative to the base body 414, and the carrier 415 is slidably connected to the slide rod 53.

[0227] When the carrier 415 and the lens 40 move between the first position and the third position shown in Figure 23, the slide bar 53 serves as a guiding structure, and the carrier 415 slides along the axial direction of the slide bar 53 to ensure that the movement trajectory of the carrier 415 and the lens 40 is basically a linear motion.

[0228] Figure 29 exemplarily shows one arrangement of the slide bar 53. A guide groove 55 is provided on the carrier along a direction parallel to the optical axis O1-O2 of the lens, and the slide bar 53 is slidably arranged in the guide groove 55.

[0229] To further increase the relative movement speed between the slide bar 53 and the guide groove 55, in some implementations, a lubrication structure may be provided in the guide groove 55. For example, the guide groove 55 may be filled with lubricating oil; or, for another example, a film structure with a low friction coefficient may be formed on the inner wall surface of the guide groove 55.

[0230] To improve the stability of the carrier 415 sliding relative to the slide bar 53 when the carrier 415 carrying the lens 40 moves relative to the base 414, multiple slide bars 53 can be provided in the camera drive motor. For example, in the examples of Figures 27 and 28, slide bars A and B are provided. Slide bars A and B can be arranged at intervals along the circumference of the carrier 415, and slide bars A and B are disposed in corresponding guide grooves.

[0231] In some examples, more slide bars may be provided, and these multiple slide bars may be evenly distributed along the circumference of the carrier. These multiple slide bars may also be symmetrically arranged about the optical axis O1 - O2 of the lens, so that the movement of the lens is smoother when focusing.

[0232] In some configurations, as shown in FIG28 , the carrier 415 has an abutment surface 531 that slidably engages the slide bar 53. When the carrier 415 slides axially along the slide bar 53, the slide bar 53 contacts the abutment surface. The abutment between the slide bar 53 and the abutment surface 531 serves to position the slide bar 53 and ensure that the carrier 415 moves linearly along the axial direction of the slide bar 53.

[0233] In some possible structures, multiple sliding rods 53 and multiple elastic members 50 may be included. The multiple sliding rods 53 and the multiple elastic members 50 may be arranged alternately along the circumference of the carrier 415. That is, one elastic member 50 may be provided between two adjacent sliding rods 53, and one sliding rod 53 may be provided between two adjacent elastic members 50.

[0234] To further enable the carrier 415 carrying the lens 40 to move linearly relative to the base 414 in a direction parallel to the lens optical axis O1-O2, an attraction structure 54 is added in the embodiment of the present application, as shown in Figures 28 and 29. This attraction structure 54 can generate an attractive force on the slide bar 53. In this way, when the focus drive structure drives the carrier 415 and the lens 40 to move along the lens optical axis O1-O2, the carrier 415 can slide linearly along the axial direction of the slide bar 53 under the attraction force.

[0235] In some examples, as shown in FIG29 , the attraction structure 54 may include a magnet fixed to the carrier 415 and disposed near the slide bar 53. For example, the slide bar 53 may be a magnetic metal structure. An attractive force f is generated between the magnet and the slide bar, and the carrier 415 is caused to hold the slide bar 53 tightly during movement, thereby sliding along the axial direction of the slide bar 53. Alternatively, the slide bar 53 may be a non-magnetic structure, such as ceramic, and a magnetic material may be formed on the outer wall of the ceramic.

[0236] Referring to Figure 29, when the magnet is used to hold the slide bar, a mounting cavity 56 can be set at a position next to the slide bar 53 of the carrier 415, and the magnet can be set in the mounting cavity 56. For example, the magnet can be set in the mounting cavity 56 through a glue layer 57.

[0237] In some examples, as shown in Figure 26, the sliding rod 53 is set close to the coil and magnet of the focus drive unit, and the magnet of the attraction structure 54 is set close to the sliding rod 53. Electromagnetic induction is generated between the coil and magnet of the focus drive unit, and magnetic attraction is generated between the magnet of the attraction structure 54 and the sliding rod 53.

[0238] To prevent electromagnetic induction between the coil and magnet of the focus drive unit from interfering with the magnetic attraction between the magnet of the attraction structure and the slide bar, as shown in FIG26 , the magnet of the attraction structure 54 is closer to the slide bar 53 than the focus drive unit. This can reduce the mutual interference between them.

[0239] In the example of the present application, even if the carrier 415 carrying the lens 40 has a large stroke, such as the buffer stroke mentioned above, and the focus stroke under the driving force of the focus drive structure, under the action of the slide rod 53 and the attraction structure 54, the movement trajectory of the carrier 415 carrying the lens 40 can be basically along the optical axis O1-O2, reducing the risk of the lens assembly offset during a large stroke.

[0240] In this example of the present application, a position detection structure may also be included, and the position detection structure is used to detect the position of the carrier 415 sliding relative to the slide bar 53.

[0241] For example, the position detection structure may use an electromagnetic transducer. When the carrier 415 carrying the lens moves relative to the base 414 for focusing, the electromagnetic transducer senses the change in magnetic flux and converts it into an output signal change, thereby determining the position of the lens.

[0242] In some examples, a detection magnet can be set on the carrier 415 and arranged opposite to the electromagnetic sensor. Then, when the carrier 415 equipped with the lens and the detection magnet moves along the optical axis O1-O2 of the lens, the electromagnetic sensor senses the change in the magnetic flux of the detection magnet and determines the position of the lens.

[0243] In some examples, the detection magnet in the position detection structure can be shared with the magnet in the focus drive structure, which can simplify the structure.

[0244] Please refer to Figure 30, which is a diagram of the internal circuit of an electronic device. In an embodiment of the present application, the electronic device further includes a computing controller. In some embodiments, the computing controller and the electromagnetic sensor in the position detection structure can be disposed on a mainboard. Of course, the electromagnetic sensor and computing controller can also be disposed on other structures within the electronic device, such as on a circuit board where a universal serial bus (USB) device is located. Figure 30 only shows an example of the electromagnetic sensor and computing controller being disposed on a mainboard, and this cannot be considered a special limitation of the present application.

[0245] The position detection structure is used to detect the lens position. In some embodiments, the computation controller is a microprocessor. The computation controller is used to receive and process electrical signals containing image information from the camera module. The computation controller is further used to calculate the lens movement amount based on the lens position and control the movement of the camera module lens based on the lens movement amount.

[0246] As shown in Figure 31 , the camera drive motor of the present application may further include a second spring arm 58, a portion of which is connected to the base 414, and another portion of which is connected to the carrier 415. When the camera module performs autofocus, as the lens 40, the carrier 415, and the iris diaphragm move along the optical axis O1-O2 of the lens, the second spring arm 58 deforms to balance and buffer the forces acting on the iris diaphragm and the lens assembly, thereby making their movement smoother.

[0247] In some examples, as shown in FIG31 , multiple second spring arms 58 may be included, and the multiple second spring arms 58 may be arranged at intervals along the circumference of the carrier 415. For example, the multiple second spring arms may be arranged symmetrically about the optical axis O1-O2 of the lens. Then, when the lens, the iris diaphragm, and the carrier move along the optical axis O1-O2 of the lens, the multiple second spring arms may generate the same amount of deformation, thereby providing symmetrical elastic forces.

[0248] FIG32 illustrates an embodiment of the present invention showing a second spring arm 58. The second spring arm 58 includes a first branch arm 581 and a second branch arm 582. The first branch arm 581 and the second branch arm 582 can be positioned adjacent to each other, with one end of each branch arm connected to the carrier 415 and the other end connected to the base 414.

[0249] By providing a plurality of separate arms as shown in FIG32 , the forces acting on the iris diaphragm and the lens assembly can be further balanced and buffered, making the movement of the iris diaphragm and the lens assembly smoother.

[0250] As shown in Figures 33 and 34, Figure 34 is an exploded view of the base 414 and the carrier 415 in Figure 33. The base 414 of the present application example may include a main body 414A and an extension 414B. The extension 414B is provided on a side of the main body 414A close to the base. The extension 414B extends along the outer circumference of the main body 414A in a direction away from the main body 414A. In this way, a step may be formed between the main body 414A and the extension 414B of the base, as shown in Figures 33 and 34.

[0251] By using the seat with steps in the example of this application, a space can be formed on the periphery of the main body 414A, and other structural components in the camera module can be arranged in the space.

[0252] In some constructions, the main body portion 414A and the extension portion 414B can be a unitary structure.

[0253] 33 and 34 , along the optical axis O1 - O2 of the lens, the main body 414A and the extension 414B have a depth dimension, and an accommodating cavity is formed inside the main body 414A and the extension 414B, and the carrier 415 is disposed in the accommodating cavity.

[0254] In some examples, the coil and magnet of the focus drive structure, as well as the slide bar and the attraction structure can be disposed in the space between the carrier 415 and the main body 414A.

[0255] In some examples, a gap exists between the extension 414B and the base.

[0256] A plurality of balls for reducing the friction coefficient of the seat body 414 relative to the base 413 and a magnetic attraction structure for providing a magnetic attraction force between the seat body 414 and the base 413 may also be arranged in the gap.

[0257] In the camera module, an electrical connection structure needs to be set up to electrically connect the variable aperture drive structure, focus drive structure, anti-shake drive structure, etc. with the circuit board of the camera module.

[0258] For example, a circuit structure can be formed on the seat 414 and a circuit structure can be formed on the base 413. The circuit structure on the seat 414 and the circuit structure on the base 413 are electrically connected to the circuit board of the camera module, so that the variable aperture drive structure, focus drive structure, anti-shake drive structure, etc. form a drive path with the circuit board.

[0259] Figures 35 and 36 illustrate an exemplary electrical connection structure, which is a flexible structure. The electrical connection structure may include a second spring arm 58, which includes a first end 58A and a second end 58B. The second end 58B of the second spring arm 58 may be electrically connected to the drive structure of the iris diaphragm. For example, when the drive structure of the iris diaphragm includes a coil and a magnet, the second end 58B of the second spring arm 58 may be electrically connected to the coil of the iris diaphragm.

[0260] In the example of FIG. 36 , two second spring arms 58 are included. Each second spring arm 58 includes two branches, and each branch arm has a second end 58B. Thus, the two second spring arms 58 have four second ends 58B electrically connected to the coil of the variable aperture.

[0261] When the driving structure of the variable aperture includes four coils, two of the four second ends 58B are connected to two of the four coils, and the other two of the four second ends 58B are connected to the remaining two of the four coils.

[0262] In some examples, as shown in FIG. 35 and FIG. 36 , a conductive structure such as a wire may be provided on the base 414 to electrically connect to a flexible printed circuit (FPC) 61 .

[0263] There are many ways to implement the conductive structure. For example, the conductive leads can be formed by electroplating, or by embedding metal through insert molding.

[0264] As shown in Figures 35 and 36 , the first end 58A of the second spring arm 58 can be electrically connected to the flexible printed circuit board (FPC) 61 via a first conductive lead 62 provided on the base 414. Thus, the variable aperture can be electrically connected to the flexible printed circuit board (FPC) 61 via the second spring arm 58 and the first conductive lead 62 provided on the base 414. The flexible printed circuit board (FPC) 61 is then electrically connected to the camera module's circuit board, thus forming a drive path between the camera module's circuit board and the coil of the variable aperture.

[0265] It can be understood that the second spring arm 58 in the example of the present application not only has the function of buffering and balancing the stability of lens movement, but also has the function of electrical connection.

[0266] In some feasible structures, see Figures 35 and 36, the coil in the focus drive unit can be electrically connected to the flexible circuit board FPC through a conductive structure arranged on the base body 414. For example, a first conductive lead 62 is formed by embedding metal by insert molding, which electrically connects the coil in the focus drive structure to the flexible circuit board FPC, and the flexible circuit board FPC is electrically connected to the circuit board of the camera module. In this way, the circuit board of the camera module and the coil in the focus drive structure form a driving path.

[0267] In this example of the present application, the position detection structure may also be electrically connected to the flexible circuit board FPC via a first conductive lead 62 as shown in FIG. 36 .

[0268] In some embodiments, as shown in Figures 35 and 36 , the flexible circuit board FPC 61 may include a first portion 611 and a second portion 612. The first portion 611 may be disposed between the carrier 415 and the base 414 and opposite to the coil of the focus drive unit, while the second portion 612 surrounds the periphery of the base 413 and the base 414 and is electrically connected to the circuit board in the electronic device.

[0269] In the example of the present application, the anti-shake drive structure includes an SMA drive component for optical image stabilization. In order to form a drive path between the SMA drive component and the circuit board of the camera module, as shown in Figure 37, Figure 37 shows the electrical connection structure of the SMA drive component. It can include multiple connection terminals. For example, these multiple connection terminals can include a signal connection terminal 64 electrically connected to the fixed clamping claw 4211. In some feasible structures, a second conductive lead 63 can be formed by embedding metal through insert molding (insert molding), and the signal connection terminal 64 is electrically connected to the fixed clamping claw 4211 through the second conductive lead 63.

[0270] As shown in Figure 37, the SMA drive assembly includes four fixed claws 4211, and the four fixed claws 4211 are electrically connected to the corresponding signal connection terminals 64 through the second conductive leads 63. The signal connection terminals 64 are electrically connected to the circuit board in the camera module. In this way, the circuit board of the camera module and the fixed claws in the anti-shake drive structure form a driving path.

[0271] As shown in Figures 38 and 39, the plurality of connection terminals further include a ground connection terminal 65, which can be electrically connected to the first spring arm 427 via a ground lead 66. The ground lead 66 can be formed into a conductive lead by electroplating, or can be formed by embedding metal through insert molding.

[0272] In the embodiment of the present application, the first spring arm 427 of the example of the present application not only has the function of buffering and balancing the movement stability of the seat body, but also has the function of grounding.

[0273] In order to increase the mechanical strength of the entire camera module, as shown in Figures 40 and 41, multiple brackets 68 can be set. For example, the brackets 68 can be embedded in the base 414 by embedding metal through insert molding to enhance the strength of the base 414.

[0274] In some structures, as shown in FIG. 41 , a plurality of brackets 68 may be provided, and the plurality of brackets 68 may be spaced apart along the circumference of the seat body 414 .

[0275] As shown in FIG. 41 , a reinforcing plate 69 may be provided on the surface of the base body 414 , and an end portion 681 of a bracket 68 embedded in the base body 414 may be connected to the reinforcing plate 69 to further enhance the strength of the base body 414 .

[0276] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0277] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A camera drive motor, characterized in that: include: base; A seat body is located on the base, and the seat body has an accommodating cavity; A carrier is located in the accommodating cavity and is used to install a lens; an anti-shake drive structure connecting the base and the base body, the anti-shake drive structure comprising a plurality of drive units arranged circumferentially around the base, each drive unit comprising a movable jaw and a fixed jaw, and an SMA wire connecting the movable jaw and the fixed jaw, the movable jaw being fixedly connected to the base body, and the fixed jaw being fixedly connected to the base; A plurality of balls are located between the seat and the base, and when the anti-shake drive structure drives the seat, the carrier and the lens to move along a plane perpendicular to the optical axis of the lens, the seat moves along the plurality of balls.

2. The camera driving motor according to claim 1, wherein: The multiple balls include a first group of balls, a second group of balls and a third group of balls. Any one of the first group of balls, the second group of balls and the third group of balls includes multiple balls. The first group of balls, the second group of balls and the third group of balls are arranged at intervals along the circumference of the base.

3. The camera driving motor according to claim 1 or 2, characterized in that: An inlay groove is provided between the seat body and the base, and the plurality of balls are located in the inlay groove.

4. The camera driving motor according to any one of claims 1 to 3, characterized in that: The camera driving motor further includes: A magnetic attraction structure is located between the base and the seat body. When the anti-shake driving structure drives the seat body to move along the multiple balls, the magnetic attraction structure generates a magnetic attraction force between the base and the seat body.

5. The camera driving motor according to claim 4, wherein: The magnetic attraction structure includes a magnet and a magnetic attraction sheet, one of the magnet and the magnetic attraction sheet is arranged on the base, and the other is arranged on the seat body.

6. The camera driving motor according to claim 4 or 5, characterized in that: The plurality of balls include a plurality of groups of balls, and the plurality of groups of balls are arranged at intervals along the circumference of the base, and the magnetic attraction structure is provided between two adjacent groups of balls.

7. The camera driving motor according to any one of claims 1 to 6, characterized in that: Along the circumference of the base, the movable clamping claws of two adjacent groups of the driving units are arranged close to each other and connected together, and the fixed clamping claws of two adjacent groups of the driving units are arranged close to each other and separated.

8. The camera driving motor according to any one of claims 1 to 7, characterized in that: The fixed clamping claw is located on the lower surface of the base, the movable clamping claw is located on the lower surface of the base body, and the extending direction of the SMA wire is parallel to the extending direction of the side of the base.

9. The camera driving motor according to any one of claims 1 to 8, characterized in that: The camera driving motor further includes: A focus drive structure, a first elastic member and a first sliding rod; The first elastic member is used to apply elastic force to the carrier and the lens to move from a first position to a second position, the direction from the first position to the second position is parallel to the optical axis of the lens, and the first position is closer to the base than the second position; The focus driving structure drives the carrier and the lens to move along the optical axis of the lens between the second position and a third position, wherein the second position is between the first position and the third position; The axial direction of the first sliding rod is parallel to the optical axis direction of the lens, and the first sliding rod is arranged between the base and the carrier; When the carrier and the lens move between the first position and the third position, the carrier slides along the axial direction of the first sliding rod.

10. The camera driving motor according to claim 9, wherein: The first elastic member is located below the base. When the carrier and the lens are located at the first position, the carrier contacts the first elastic member, and the first elastic member is deformed to generate an elastic force directed from the first position to the second position.

11. The camera driving motor according to claim 10, wherein: When the carrier and the lens move between the second position and the third position, the carrier is separated from the first elastic member.

12. The camera driving motor according to any one of claims 9 to 11, characterized in that: The first elastic member includes a first support ear and a second support ear, and an elastic section connected between the first support ear and the second support ear, the first support ear and the second support ear are both fixed to the base, and the elastic section extends to the bottom of the carrier; When the carrier and the lens are located at the first position, the carrier contacts the elastic section, and the elastic section deforms to produce An elastic force is generated from the first position and directed toward the second position.

13. The camera driving motor according to any one of claims 9 to 12, characterized in that: The camera driving motor further includes: an attraction structure, the attraction structure being configured to generate attraction with the first sliding rod; When the carrier and the lens move along the optical axis of the lens, the carrier slides along the axial direction of the first sliding rod under the attraction force.

14. The camera driving motor according to claim 13, wherein: The attraction structure comprises: A magnet is fixed on the carrier and arranged close to the first sliding bar, and the attraction is generated between the magnet and the first sliding bar.

15. The camera driving motor according to claim 14, wherein: The focus driving structure includes a magnet and a coil opposite to the magnet, one of the magnet and the coil is arranged on the carrier, and the other is arranged on the base; The camera driving motor further includes: a position detection structure, the position detection structure being used to detect a sliding position of the carrier relative to the first sliding rod; The position detection structure includes an electromagnetic sensor and a magnet, and the magnet in the position detection structure is shared with the magnet in the focus driving structure.

16. The camera driving motor according to any one of claims 9 to 15, characterized in that: The camera driving motor further includes: a second elastic member and a second sliding rod; The first elastic member, the first sliding rod, the second elastic member and the second sliding rod are alternately arranged along the circumference of the carrier.

17. The camera driving motor according to any one of claims 1 to 16, characterized in that: The camera drive motor further includes an electrical connection structure; The variable aperture, focus drive structure and anti-shake drive structure in the camera module are all electrically connected to the circuit board of the camera drive motor through the electrical connection structure.

18. The camera driving motor according to claim 17, wherein: The electrical connection structure includes: a first spring arm, wherein a portion of the first spring arm is connected to the base, and another portion of the first spring arm is connected to the seat body; a second conductive lead, wherein the fixed claw is electrically connected to the circuit board of the camera drive motor through the second conductive lead; A grounding lead, wherein the first spring arm is electrically connected to the circuit board of the camera drive motor through the grounding lead.

19. The camera driving motor according to claim 17 or 18, characterized in that: The electrical connection structure includes: a second spring arm, a portion of the second spring arm being electrically connected to the variable aperture; a first conductive lead; a flexible circuit board, the flexible circuit board being electrically connected to a circuit board of the camera drive motor, wherein another portion of the second spring arm is electrically connected to the flexible circuit board via the first conductive lead; The focus driving structure is electrically connected to the flexible circuit board through the first conductive lead.

20. The camera driving motor according to any one of claims 1 to 19, characterized in that: The seat body comprises: a main body portion and an extension portion; The extension portion is provided on a side of the main body portion close to the base, and the extension portion extends along the circumference of the outer edge of the main body portion toward a direction away from the main body portion; The accommodating cavity passes through the main body and the extension portion; A gap is defined between the extension portion and the base, and the plurality of balls are disposed in the gap.

21. A camera drive motor, characterized in that: include: base; A seat body is located on the base, and the seat body has an accommodating cavity; A carrier is located in the accommodating cavity and is used to install a lens; an elastic member, the elastic member being used to apply elastic force to the carrier and the lens to move from a first position to a second position, wherein the direction from the first position to the second position is parallel to the optical axis of the lens, and the first position is closer to the base than the second position; a focus drive structure, configured to drive the carrier and the lens to move along the optical axis of the lens between the second position and a third position, wherein the second position is between the first position and the third position; a sliding rod, the axial direction of the sliding rod being parallel to the optical axis direction of the lens, and the sliding rod being arranged between the base and the carrier; When the carrier and the lens move between the first position and the third position, the carrier slides along the axial direction of the slide rod. move.

22. The camera driving motor according to claim 21, wherein: The elastic member is located below the base. When the carrier and the lens are located at the first position, the carrier contacts the elastic member, and the elastic member deforms to generate an elastic force directed from the first position to the second position.

23. The camera driving motor according to claim 22, wherein: When the carrier and the lens move between the second position and the third position, the carrier is separated from the elastic member.

24. The camera driving motor according to any one of claims 21 to 23, characterized in that: The elastic member includes a first support ear and a second support ear, and an elastic section connected between the first support ear and the second support ear, the first support ear and the second support ear are both fixed to the base, and the elastic section extends to the bottom of the carrier; When the carrier and the lens are located at the first position, the carrier contacts the elastic segment, the elastic segment is deformed, and an elastic force is generated from the first position to the second position.

25. The camera driving motor according to any one of claims 21 to 24, characterized in that: The camera driving motor further includes: an attraction structure, configured to generate attraction with the slide bar; When the carrier and the lens move along the optical axis of the lens, the carrier slides along the axial direction of the sliding rod under the attraction.

26. The camera driving motor according to claim 25, characterized in that: The attraction structure comprises: A magnet is fixed on the carrier and arranged close to the slide bar, and the attraction force is generated between the magnet and the slide bar.

27. The camera driving motor according to any one of claims 21 to 26, characterized in that: The focus driving structure includes a magnet and a coil opposite to the magnet, one of the magnet and the coil is arranged on the carrier, and the other is arranged on the base; The camera driving motor further includes: a position detection structure, the position detection structure being used to detect a sliding position of the carrier relative to the slide bar; The position detection structure includes an electromagnetic sensor and a magnet, and the magnet in the position detection structure is shared with the magnet in the focus driving structure.

28. A camera module, characterized in that: include: The camera drive motor according to any one of claims 1 to 27; A lens is mounted on the carrier.

29. An electronic device, characterized in that: include: The camera module according to claim 28; A computing controller is electrically connected to the camera module.

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