Driving motor, camera module and terminal equipment

Abstract

The embodiment of the invention relates to the technical field of motors, and provides a driving motor, a camera module and terminal equipment, and the driving motor comprises a stator part and a rotor part. The stator part comprises at least two magnetic parts, the magnetic parts are arranged side by side in the first direction, and the rotor part is selectively matched with the magnetic parts in a magnetic attraction mode and linearly reciprocates in the first direction. The magnetic component and the mover part can each comprise a magnetic controllable structure. Or, the magnetic component comprises a magnetic controllable structure, and the mover part comprises a permanent magnet or a metal piece which can be magnetically attracted; or the magnetic component comprises a permanent magnet or a metal piece which can be magnetically attracted, and the mover part comprises a magnetic controllable structure. According to the driving motor provided by the embodiment of the invention, the moving position of the mover part relative to the stator part is controllable, and the feeding amount of the mover part moving in the first direction can be controlled. Therefore, when the driving motor is applied to the fields of aperture devices and the like, the opening and closing precision of the blades can be greatly improved.

Description

Technical Field

[0001] This application relates to the field of motor technology, and in particular to a drive motor, a camera module, and a terminal device. Background Technology

[0002] In the field of aperture mechanisms, precise control of the opening and closing strokes of each blade is required to accurately adjust the aperture size. Currently, the blades of aperture mechanisms are controlled to open and close via a transmission mechanism, resulting in low precision. Summary of the Invention

[0003] This application provides a drive motor, a camera module, and a terminal device, aiming to improve the low opening and closing accuracy of the blades in existing aperture devices.

[0004] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0005] In a first aspect, this application provides a drive motor, including a stator and a mover. The stator and mover are movable relative to each other, and structures, components, etc., that need to be driven can be mounted on the stator or the mover. For example, in an aperture device, blades that need to be opened and closed can be connected to the mover, so that each blade can open and close synchronously or asynchronously under the drive of the corresponding mover.

[0006] Specifically, the stator includes at least two magnetic components, each magnetic component is arranged side by side along a first direction, and the mover selectively magnetically attaches to each magnetic component and moves linearly back and forth in the first direction.

[0007] Understandably, the arrangement direction of each magnetic component determines the direction of movement of the moving part; that is, the moving part moves linearly back and forth along the first direction under the magnetic attraction of each magnetic component. Here, selective magnetic attraction means that the moving part and each magnetic component are not in a state of mutual magnetic attraction in real time, but are in a state of mutual magnetic attraction at a certain moment.

[0008] The structural composition of the magnetic components and the moving part can be adjusted according to actual usage requirements. For example, both the magnetic components and the moving part can include magnetically controllable structures. These magnetically controllable structures include, but are not limited to, coils, combinations of magnetic structures and displacement structures, and combinations of magnetic structures and shielding structures. Understandably, the magnetically controllable structure generates magnetism and forms a magnetic field under specific conditions. For example, when a coil is energized, a corresponding magnetic field is formed around the coil. At this time, both the magnetic components and the moving part can form magnetic fields under corresponding conditions. Through the interaction force between the magnetic fields, the moving part moves relative to each magnetic structure.

[0009] Alternatively, the magnetic component may include a magnetically controllable structure, and the moving part may include a permanent magnet or a magnetically attractable metal part. Here, the magnetic attraction of the magnetic component can be triggered by corresponding conditions, while the moving part always has a corresponding magnetic field, which is also an inherent characteristic of permanent magnets or magnetically attractable metal parts.

[0010] Alternatively, the magnetic component may include a permanent magnet or a magnetically attractable metal part, and the moving part may include a magnetically controllable structure. Here, the magnetic attraction force of the moving part can be triggered by corresponding conditions, while the magnetic component always has a corresponding magnetic field.

[0011] The technical solutions described in this application have at least the following technical effects or advantages:

[0012] The drive motor provided in this application embodiment includes a magnetically controllable connection structure in at least one of the magnetic components of the stator or the mover, so that it is triggered under the corresponding magnetic field conditions of the magnetic components of the stator or the mover, thereby making the movement position of the mover relative to the stator controllable, and also controlling the feed amount of the mover moving in the first direction. Thus, when this drive motor is applied to fields such as aperture devices, the movement accuracy can be significantly improved, for example, the opening and closing accuracy of the blades in an aperture device.

[0013] In some embodiments, the drive motor further includes a plurality of displacement sensors for monitoring the movement position of the moving part relative to the magnetic component in a first direction.

[0014] For example, the displacement sensor is a Hall sensor, and the Hall sensors are arranged sequentially along the first direction to monitor the relative position of the moving part with respect to each magnetic component.

[0015] Understandably, a displacement sensor can detect the movement of the moving part relative to the magnetic components. For example, the displacement sensor could be a Hall sensor, which monitors the position and distance of the moving part relative to each magnetic component by detecting the strength of the magnetic field. Alternatively, the displacement sensor could be an infrared sensor, which monitors the position and distance of the moving part relative to each magnetic component through infrared ranging. Thus, when the relative position of the driven target object needs to be fine-tuned, the current movement position of the moving part can be adjusted based on the data monitored by the corresponding displacement sensor.

[0016] Secondly, this application provides a camera module, including a base, a cover plate disposed on the base, an intermediate plate disposed between the base and the cover plate, multiple blades, and multiple drive motors as described above, with each drive motor corresponding to each blade.

[0017] The base and cover plate are joined together to form the main body, while the middle plate, blades and drive motor are all set in the space structure enclosed by the base and cover plate.

[0018] Each magnetic component of the drive motor is mounted on the base, and the mover of the drive motor is mounted on the intermediate plate. Each blade is connected to the corresponding mover of the drive motor. Here, each magnetic component is fixed to the base and remains stationary, while the mover drives the corresponding blade to move relative to the intermediate plate, thereby adjusting the aperture size.

[0019] The technical solutions described in this application have at least the following technical effects or advantages:

[0020] The camera module provided in this application embodiment, based on the addition of the aforementioned drive motor, utilizes the characteristic of selective magnetic attraction between the moving part of the drive motor and each magnetic component to perform opening and closing actions with corresponding blades. Simultaneously, the drive motors controlling each blade can operate independently; therefore, the relative position of each blade can be adjusted individually, reducing the probability of mutual interference between blades and thus improving the opening and closing position accuracy of each blade.

[0021] In some embodiments, a first light-transmitting hole is provided on the base, which penetrates the base; a second light-transmitting hole is provided on the middle plate, which also penetrates the middle plate; and a third light-transmitting hole is provided on the cover plate, which also penetrates the cover plate. The first, second, and third light-transmitting holes are coaxially arranged. Each blade opens and closes under the drive of the moving part of the drive motor to block the second light-transmitting hole.

[0022] Understandably, the first light-emitting aperture corresponds to the light-emitting element, such as the lens barrel; the third light-emitting aperture is used to allow external light beams to enter, and glass is usually placed at the third aperture for protection. Furthermore, the coaxial arrangement of the apertures means that the central axes of the apertures coincide, so that the light beam can pass through each aperture without obstruction.

[0023] Since each blade moves along with the moving part of each drive motor on the intermediate plate, the second light-transmitting hole is blocked during the opening and closing of each blade to adjust the amount of light emitted or the amount of exposure.

[0024] In some embodiments, a receiving groove is provided on the base for accommodating the magnetic components of the drive motor. Specifically, the groove profile of the receiving groove is adapted to the outer profile of each magnetic component of the drive motor to accommodate the magnetic components. A first guide groove is provided on the intermediate plate for sliding of the moving part of the drive motor, and the first guide groove corresponds to the receiving groove.

[0025] Understandably, the stator and mover of the drive motor are respectively mounted on the base and the intermediate plate. Specifically, the two are installed and limited by the receiving groove and the first guide groove. When each magnetic component forms a magnetic field in sequence, the mover generates a driving force and moves relative to each magnetic component under the guidance of the first guide groove. At the same time, it drives the blades to move relative to each other.

[0026] In some embodiments, the blades are provided with mounting holes for mounting the moving part of the drive motor.

[0027] Understandably, the profile of the mounting hole should be adapted to the profile of the moving part. By installing the moving part into the mounting hole and forming a connection with the blade, the moving part can drive the blade to move relative to each other.

[0028] In some embodiments, the blade is further provided with a mounting cover, which covers the moving part of the drive motor; or, a second guide groove is provided on the cover plate for the mounting cover to slide.

[0029] Understandably, the mounting cover can increase the contact area between the blade and the moving part to improve the connection stability between the blade and the moving part. In addition, a second guide groove is opened on the cover plate to limit the mounting cover, which further improves the stability of the moving part during relative movement.

[0030] In some embodiments, the blade has a first end facing the second light-transmitting hole, the edge of the first end of each blade is straight, or the first end of each blade has a notch structure.

[0031] Understandably, when the blades close, the edges of the first ends of each blade surround each other to block the second light-transmitting aperture. When the edges of the first ends of each blade are straight, the second light-transmitting aperture can be completely blocked; however, when a notch structure is formed at the first end of the blade, each blade will still form a structure similar to a light-transmitting aperture after closing, meaning that the light beam can still enter or exit the second light-transmitting aperture through this light-transmitting aperture.

[0032] In some embodiments, the camera module further includes a gasket disposed between the cover plate and the intermediate plate. The gasket has a through fourth light-transmitting hole, which is aligned and connected with the second light-transmitting hole. The inner diameter of the fourth light-transmitting hole is smaller than the inner diameter of the second light-transmitting hole.

[0033] Understandably, the inner diameter of the fourth light-transmitting hole of the gasket is the maximum aperture diameter that the camera module can obtain, that is, the maximum exposure diameter of the camera module, and each blade, in its unfolded state, has its first end surrounding the fourth light-transmitting hole.

[0034] In some embodiments, the notch structure is an arc-shaped notch, and the arc-shaped edge of the arc-shaped notch is adapted to the hole wall of the fourth light-transmitting hole.

[0035] Understandably, when each blade is in the unfolded state, in order to minimize the unfolding path of the blade, the notch structure can be set as an arc-shaped notch, and the arc-shaped edge of the arc-shaped notch is adapted to the hole wall of the fourth light-transmitting hole. Here, the two are adapted to each other, which means that the arc or curvature of the arc-shaped edge of the arc-shaped notch is the same as the arc or curvature of the fourth light-transmitting hole.

[0036] In some embodiments, the camera module further includes a lens barrel, the image end of which is connected to the end of the base away from the middle plate, and the lens barrel is coaxially arranged with the first light-transmitting hole.

[0037] Thirdly, this application provides a terminal device, including a housing and the aforementioned camera module.

[0038] Specifically, an opening is made in the housing, and the camera module is located at the opening.

[0039] The technical solutions described in this application have at least the following technical effects or advantages:

[0040] The terminal device provided in this application embodiment, based on the above-mentioned camera module, can obtain more accurate exposure and depth of field. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of the terminal device provided in the embodiments of this application;

[0042] Figure 2 An exploded view of the terminal device provided in the embodiments of this application;

[0043] Figure 3 This is a schematic diagram of the camera module blades in the closed state provided in the embodiments of this application;

[0044] Figure 4 A schematic diagram of the camera module blades in the deployed state provided in an embodiment of this application;

[0045] Figure 5 An exploded view of the camera module provided in the embodiments of this application;

[0046] Figure 6 This is a schematic diagram of the structure of the cover plate of the camera module provided in the embodiments of this application;

[0047] Figure 7 This is a schematic diagram of the structure of the blades of the camera module provided in the embodiments of this application;

[0048] Figure 8 This is a schematic diagram of the drive motor provided in an embodiment of this application.

[0049] The following are the labeling elements in the figure:

[0050] 1000. Terminal equipment;

[0051] 200. Housing; 300. Camera module; 201. Mid-frame; 202. Back cover; 203. Opening; 400. Display screen; 500. Circuit board; 600. Battery;

[0052] 100. Drive motor; 301. Base; 302. Cover plate; 303. Intermediate plate; 304. Blade; 305. Gasket; 306. First light-transmitting hole; 307. Second light-transmitting hole; 308. Third light-transmitting hole; 309. Fourth light-transmitting hole; 310. Receiving groove; 311. First guide groove; 312. Mounting hole; 313. Mounting cover; 314. Second guide groove; 315. First end; 316. Notch structure;

[0053] 10. Stator; 11. Magnetic components; 20. Mover; 30. Main control board; 40. Displacement sensor;

[0054] X, the first direction. Detailed Implementation

[0055] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0057] In the description of this application, it should be understood that the terms "length", "width", "thickness", "top", "bottom", "inner", "outer", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0058] The terms "first," "second," "third," "fourth," "fifth," and "sixth," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. For example, "first deformation space" and "second deformation space" are merely used to distinguish different deformation spaces and do not limit their order. A first deformation space can also be named a second deformation space, and a second deformation space can also be named a first deformation space, without departing from the scope of the various described embodiments. Furthermore, the terms "first," "second," etc., do not imply that the indicated features must be different.

[0059] In this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0060] In this application, "and / or" is merely a way of describing the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0061] It should be noted that in this application, the words "in some embodiments," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in some embodiments," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the words "in some embodiments," "exemplarily," and "for example" is intended to present the relevant concepts in a specific manner.

[0062] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments.

[0063] In the field of aperture devices, multiple blades are typically driven by a single motor and a linkage mechanism to adjust exposure and depth of field. However, this method offers low control precision for each blade, and it is difficult to achieve independent control of each blade.

[0064] In view of this, this application provides a drive motor, which is applied in an aperture device to provide the driving force required for the opening and closing of each blade. Specifically, the drive motor includes a stator and a mover. The stator includes multiple magnetic components arranged side by side along a first direction, and the mover selectively magnetically attaches with each magnetic component to achieve linear reciprocating movement of the mover in the first direction. The structural composition of the magnetic components and the mover can be adjusted according to the actual usage requirements. For example, both the magnetic components and the mover may include a magnetically controllable structure, which includes, but is not limited to, coils, combinations of magnetic structures and displacement structures, and combinations of magnetic structures and shielding structures. Understandably, the magnetically controllable structure generates magnetism and forms a magnetic field under specific conditions. For example, when a coil is energized, a corresponding magnetic field is formed around the coil. At this time, both the magnetic components and the mover can form magnetic fields under corresponding conditions, and the mover moves relative to each magnetic structure through the interaction force between the magnetic fields. Alternatively, the magnetic component includes a magnetically controllable structure, and the moving part includes a permanent magnet or a magnetically attractable metal part. Here, the magnetic attraction force of the magnetic component can be triggered by appropriate conditions, while the moving part always possesses a corresponding magnetic field, which is an inherent characteristic of permanent magnets or magnetically attractable metal parts. In this way, the relative movement position of the moving part and stator in the drive motor can be precisely controlled, thereby effectively improving the opening and closing accuracy of each blade in the aperture device.

[0065] The terminal device 1000 involved in this application embodiment may include handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem. It may also include cellular phones, smartphones, personal digital assistant (PDA) computers, tablet computers, laptop computers, machine type communication (MTC) terminals, point-of-sale (POS) terminals, vehicle-mounted computers, and other terminal devices 1000 with imaging capabilities.

[0066] This application does not impose any special restrictions on the specific form of the terminal device 1000 described above. For ease of explanation and understanding, the following description uses a mobile phone as an example of the terminal device 1000.

[0067] Firstly, please refer to Figure 1 and Figure 2The terminal device 1000 provided in this application embodiment includes a housing 200 and a camera module 300.

[0068] The housing 200 provides a structural frame for the terminal device 1000. Specifically, the housing 200 includes a middle frame 201 and a rear cover 202. An opening 203 is made in the rear cover 202, and the camera module 300 is disposed at the opening 203, that is, the optical axis of the camera module 300 is coaxially arranged with the central axis of the opening 203.

[0069] Of course, the terminal device 1000 may also include a display screen 400, a circuit board 500, and a battery 600. The display screen 400 is located on the side of the middle frame 201 away from the back cover 202. The circuit board 500 and battery 600 may also be located on the middle frame 201. For example, the circuit board 500 and battery 600 may be located on the side of the middle frame 201 facing the back cover 202, or the circuit board 500 and battery 600 may be located on the side of the middle frame 201 facing the display screen 400.

[0070] It is understood that the housing 200 of the terminal device 1000 provided in this application includes, but is not limited to, the structure described above. For example, in some other embodiments, the housing 200 may be a one-piece or separate housing made of metal or plastic. In this embodiment, the housing 200 is specifically described using the structure composed of a middle frame 201 and a back cover 202 as an example.

[0071] Furthermore, the circuit board 500 is electrically connected to the lens barrel in the camera module 300, and the lens barrel is disposed on the circuit board 500 and corresponds to the opening 203.

[0072] Secondly, please refer to Figures 3 to 5 The camera module 300 provided in this application embodiment includes a base 301, a cover plate 302, a middle plate 303, multiple blades 304, and multiple drive motors 100.

[0073] The cover plate 302 is placed on the base 301, the intermediate plate 303 is placed between the base 301 and the cover plate 302, and each drive motor 100 corresponds to each blade 304.

[0074] The base 301 and the cover plate 302 are combined to form the main body of the camera module 300. The middle plate 303, each blade 304 and the drive motor 100 are all arranged in the space structure enclosed by the base 301 and the cover plate 302.

[0075] Referring to the figure, the drive motor 100 includes a stator 10 and a mover 20.

[0076] The stator 10 and the mover 20 can move relative to each other. In the camera module 300, the blades 304 that need to be opened and closed are connected to the mover 20, so that each blade 304 opens or closes synchronously or asynchronously under the drive of the corresponding mover 20.

[0077] Please refer to Figure 8 The stator 10 of the drive motor 100 includes at least two magnetic components 11, each magnetic component 11 is arranged side by side along the first direction X, and the mover 20 is selectively magnetically attracted to each magnetic component 11 and moves linearly back and forth in the first direction X.

[0078] Each magnetic component 11 of the drive motor 100 is mounted on the base 301, and the mover part 20 of the drive motor 100 is mounted on the intermediate plate 303. Each blade 304 is connected to the corresponding mover part 20 of the drive motor 100. Here, each magnetic component 11 is fixed to the base 301 and remains stationary, while the mover part 20 drives the corresponding blade 304 to move relative to the intermediate plate 303, thereby adjusting the aperture size.

[0079] Here, the magnetic component 11 can be a coil. Each coil is arranged in parallel and electrically connected to the circuit board 500 of the terminal device 1000. Each coil is sequentially energized in the first direction X. For example, the forward energization of the first coil creates a magnetic field, which magnetically attracts the moving part 20. The magnetically attracted moving part 20 moves in the first direction X until it reaches the second coil. At this point, the first coil is immediately de-energized, and the second coil is immediately energized, thus creating a magnetic field that magnetically attracts the moving part 20. In this way, each coil is sequentially energized and de-energized in the first direction X, allowing the moving part 20 to continuously receive a driving magnetic force in the first direction X. Similarly, by sequentially energizing and de-energizing each coil in the first direction X in the opposite direction, the moving part 20 moves in the opposite direction X. Since the moving part 20 is connected to the corresponding blade 304, the corresponding blade 304 can also reciprocate linearly in the first direction X. Furthermore, each blade 304 is controlled by an independent drive motor 100, meaning that the relative movement between each blade 304 does not affect each other. At the same time, the power transmission efficiency of linear motion is higher, which can drive the blade 304 to move more directly and efficiently. Therefore, the opening and closing accuracy of each blade 304 is higher.

[0080] For blades 304 that are opened and closed by different drive motors 100, each drive motor 100 can synchronously receive positive or negative electrical signals to achieve synchronous opening and closing of each blade 304. In addition, in some applications where one or more blades 304 need to open and close individually, only the corresponding magnetic components 11 of the stator section 10 of the corresponding drive motor 100 need to be individually energized and de-energized. Furthermore, the position of each blade 304 can be finely adjusted during the opening and closing process. For example, each coil can be sequentially energized and de-energized along the first direction X, so that the moving part 20 continuously receives a driving magnetic force in the first direction X. However, when there is a slight deviation in the movement position of the moving part 20, the power unit can be reverse-energized by reversing the coil at the corresponding position after the movement is completed, so that the power unit immediately moves in the opposite direction of the first direction X. This further improves the opening and closing accuracy of each blade 304.

[0081] Here, the first direction X simply means that the magnetic components 11 of the stator section 10 in the same drive motor 100 are arranged side by side. When there are many blades 304, the magnetic components 11 of the stator section 10 in each drive motor 100 can also be arranged side by side in the corresponding direction. That is, the side-by-side arrangement direction of the magnetic components 11 of the stator section 10 in the corresponding drive motor 100 is different according to the opening and closing direction requirements of each blade 304.

[0082] For example, such as Figure 5 As shown, there are four blades 304 and four drive motors 100. The stator section 10 of each drive motor 100 includes two magnetic components 11. The blades 304 are arranged in pairs on a central plate 303, with each pair of blades 304 extending or retracting at a 90° angle relative to the central plate 303. The magnetic components 11 of the stator section 10 of each drive motor 100 are arranged side-by-side along the corresponding extension / retraction direction of the blade 304. In this case, the first direction X is the extension / retraction direction of the blade 304. The mover section 20 of each drive motor 100 is slidably connected to the central plate 303 and is vertically distributed with respect to the magnetic components 11. Thus, by inputting an electrical signal to the corresponding magnetic component 11 of the stator section 10 of each drive motor 100, each blade 304 moves independently under the drive of its corresponding mover section 20.

[0083] Of course, in other embodiments, the number of blades 304 can be increased or decreased, and the extension and retraction direction of each blade 304 relative to the intermediate plate 303 can also be adjusted accordingly.

[0084] The camera module 300 provided in this embodiment, based on the addition of the aforementioned drive motor 100, utilizes the selective magnetic attraction between the moving part 20 of the drive motor 100 and each magnetic component 11 to perform opening and closing actions with corresponding blades 304. Simultaneously, the drive motor 100 controlling each blade 304 can operate independently; therefore, the relative position of each blade 304 can be adjusted individually, reducing the probability of mutual interference between blades 304 and thereby improving the opening and closing position accuracy of each blade 304.

[0085] Please refer to Figure 5 In some embodiments, a first light-transmitting hole 306 is provided on the base 301, and the first light-transmitting hole 306 penetrates the base 301. A second light-transmitting hole 307 is provided on the intermediate plate 303, and similarly, the second light-transmitting hole 307 penetrates the intermediate plate 303. A third light-transmitting hole 308 is provided on the cover plate 302, and similarly, the third light-transmitting hole 308 penetrates the cover plate 302. The first light-transmitting hole 306, the second light-transmitting hole 307, and the third light-transmitting hole 308 are coaxially arranged. Each blade 304 opens and closes under the drive of the moving part 20 of the drive motor 100 to block the second light-transmitting hole.

[0086] Understandably, the first light-transmitting aperture 306 corresponds to a light-emitting element, such as a lens barrel; the third light-transmitting aperture 308 is used to allow external light beams to enter, and glass is usually placed at the third aperture for protection. Furthermore, the coaxial arrangement of the apertures means that the central axes of the apertures coincide, so that the light beam can pass through each aperture without obstruction.

[0087] Since each blade 304 moves on the intermediate plate 303 along with the moving part 20 of each drive motor 100, the second light-transmitting hole 307 is blocked during the opening and closing of each blade 304 to adjust the amount of light emitted or the amount of exposure.

[0088] Here, all the light-transmitting holes are round holes, which makes the processing technology simpler and better suited to the opening and closing requirements of each blade made of 304 stainless steel.

[0089] Please refer to Figure 5 In some embodiments, a receiving groove 310 is provided on the base 301 for receiving the magnetic component 11 of the drive motor 100, and a first guide groove 311 is provided on the intermediate plate 303 for sliding the moving part 20 of the drive motor 100. The first guide groove 311 corresponds to the receiving groove 310.

[0090] Understandably, the groove profile of the receiving groove 310 should be adapted to the outer profile of each magnetic component 11 of the drive motor 100 to fix the magnetic component 11. The stator 10 and the mover 20 of the drive motor 100 are respectively mounted on the base 301 and the intermediate plate 303. Specifically, the receiving groove 310 and the first guide groove 311 are used to install and limit the two. When each magnetic component 11 forms a magnetic field in sequence, the mover 20 generates a driving force and moves relative to each magnetic component 11 under the guidance of the first guide groove 311. At the same time, it drives the blade 304 to move relative to each other.

[0091] Here, the groove extension direction of the first guide groove 311 is consistent with the extension and retraction direction of the corresponding blade 304.

[0092] For example, such as Figure 5 As shown, there are four blades 304 and four drive motors 100. The stator 10 of the drive motor 100 includes two magnetic components 11. Each blade 304 is arranged in pairs, and the extension and retraction directions of each pair of adjacent blades 304 relative to the intermediate plate 303 are 90°. The intermediate plate 303 also has four first guide grooves 311, each containing a moving part 20. A receiving groove 310 is also provided on the base 301 at a position corresponding to each first guide groove 311, housing the magnetic components 11 within the receiving groove 310. Thus, each blade 304 opens and closes under the mutual magnetic attraction of the corresponding magnetic component 11 and the moving part 20.

[0093] Please refer to Figure 5 and Figure 8 In other embodiments, the drive motor 100 further includes a main control board 30, which is disposed in the receiving groove 310 of the base 301, and each magnetic component 11 is electrically connected to the main control board 30. That is, the main control board 30 is used to control the signal on / off of each magnetic component 11 and the on / off frequency.

[0094] For example, the main control board 30 can sequentially turn the power on and off to each magnetic component 11 along the positive direction of the first direction X. For instance, in the direction along which the magnetic components 11 are arranged side by side, the main control board 30 turns the positive current on only the magnetic component 11 at the first position, and the magnetic field formed drives the moving part 20 to move in the positive direction. At this time, the corresponding blade 304 is in a gradually closing state. When the moving part 20 moves to the magnetic component 11 at the second position, the main control board 30 cuts off the positive current of the magnetic component 11 at the first position, and turns the positive current on the magnetic component 11 at the second position, and so on, so that the moving part 20 can move relative to the magnetic component 11 in the positive direction of the first direction X. When the moving part 20 needs to move in the opposite direction of the first direction X, the main control board 30 can sequentially turn the power on and off to the magnetic component 11 in the opposite direction of the first direction X.

[0095] And, please refer to Figure 5 In other embodiments, the drive motor 100 further includes a displacement sensor 40, which is used to monitor the movement position of the mover 20 relative to the magnetic component 11 in the first direction X.

[0096] Here, the displacement sensor 40 transmits the position signal of the moving part 20 relative to the magnetic component 11 to the main control board 30, thereby providing the main control board 30 with a basis for determining whether to switch the current on or off for each magnetic component 11, the direction of the current flow, and the switching frequency.

[0097] Specifically, the displacement sensors 40 are spaced apart along the first direction X. For example, when the displacement sensor 40 is a Hall sensor, each Hall sensor is located on the main control board 30 and between two adjacent magnetic components 11. The Hall sensor can obtain its position distance relative to each magnetic component 11 by detecting the strength of the magnetic field of the moving part 20. Alternatively, the displacement sensor can be an infrared sensor, with an infrared transmitter and an infrared receiver arranged along the first direction X. Both the infrared transmitter and the infrared receiver are electrically connected to the main control board 30, and the moving part 20 is located between the infrared transmitter and the infrared receiver. That is, the position distance of the moving part 20 relative to each magnetic component 11 is monitored by infrared ranging.

[0098] Please refer to Figure 7 In some embodiments, the blade 304 has a mounting hole 312 for mounting the mover part 20 of the drive motor 100.

[0099] Understandably, the profile of the mounting hole 312 should be adapted to the profile of the moving part 20. By installing the moving part 20 into the mounting hole 312 and forming a connection with the blade 304, the moving part 20 can drive the blade 304 to move relative to each other.

[0100] During the installation process, the moving part 20 is inserted into the mounting hole 312 on the blade 304 by plugging or pressing.

[0101] Of course, in order to further improve the opening and closing accuracy of the blade 304, the inner wall of the mounting hole 312 and the outer surface of the moving part 20 are interference fit, that is, during the relative movement of the moving part 20, there is no relative movement between the moving part 20 and the blade 304.

[0102] Thus, by using a hole-shaft mating method, the connection structure between the blade 304 and the moving part 20 can be simplified, and the connection efficiency between the two can be improved.

[0103] In other embodiments, a slot may be provided on the blade 304 for engaging with the moving part 20. This slot is typically located on the outer edge of the blade 304. Therefore, compared to providing a mounting hole 312 in the center of the blade 304, providing a slot on the edge of the blade 304 allows for fuller utilization of the blade 304's dimensions to adjust the opening and closing stroke.

[0104] Please refer to Figure 7 In some embodiments, the blade 304 is also provided with a mounting cover 313, which covers the moving part 20 of the drive motor 100.

[0105] Understandably, the blade 304 is generally thin, and when the moving part 20 is installed in the mounting hole 312 on the blade 304, the contact area between them is small. During the frequent opening and closing of the blade 304, there is a risk that the moving part 20 may come out of the mounting hole 312. Therefore, adding a mounting cover 313 can increase the contact area between the blade 304 and the moving part 20, thereby improving the connection stability between the blade 304 and the moving part 20.

[0106] In other embodiments, a mounting sleeve may be provided on the blade 304, which serves as an extension of the blade 304 in the mounting direction, thereby increasing the contact area between the moving part 20 and the blade 304.

[0107] And, please refer to Figure 6 A second guide groove 314 is provided on the cover plate 302 to limit the installation of the cover 313.

[0108] Understandably, since the cover plate 302 is installed on the base 301, the second guide groove 314 is opened on the cover plate 302 to accommodate the mounting cover 313, which can further compress the overall thickness of the camera module 300. At the same time, the second guide groove 314 should be arranged opposite to the first guide groove 311. That is, corresponding guide structures are provided at both ends of the moving part 20, which can further improve the stability of the moving part 20 during relative movement.

[0109] Please refer to Figure 5 and Figure 7 In some embodiments, the blade 304 has a first end 315 facing the second light-transmitting hole 307, and the edge of the first end 315 of each blade 304 is straight, or the first end 315 of each blade 304 has a notch structure 316.

[0110] Understandably, the first end 315 of the blade 304 is also the end that is far from its connection with the moving part 20. Furthermore, when each blade 304 is closed, the edges of the first end 315 of each blade 304 surround each other to block the second light-transmitting hole 307.

[0111] When the edges of the first ends 315 of each blade 304 are surrounded, the shape of the edges of the first ends 315 can be adjusted according to actual usage requirements.

[0112] For example, when the edge of the first end 315 of each blade 304 is in a straight state, the second light-transmitting hole 307 can be completely blocked. That is, when each blade 304 is closed, the edge of its first end 315 abuts against each other to form a tightly sealed end.

[0113] For example, when a notch structure 316 is formed at the first end 315 of the blade 304, each blade 304 will still form a structure similar to a light-transmitting hole after being closed. That is, the light beam can also enter or exit the second light-transmitting hole 307 through the light-transmitting hole.

[0114] Thus, the shape of the first end 315 of the blade 304 can be adjusted according to actual usage requirements.

[0115] For example, such as Figure 5 As shown, there are four blades 304, arranged in pairs on the intermediate plate 303. The extension / retraction direction of each pair of adjacent blades 304 relative to the intermediate plate 303 is 90°. An interdependent notch structure 316 is formed on the first end 315 of each blade 304. When the blades 304 are in the closed state, the edges of the first ends 315 of each blade 304 abut against each other, thus forming a light-transmitting hole in the notch structure 316 on the first end 315 of each blade 304.

[0116] Please refer to Figure 5 In some embodiments, the camera module 300 further includes a gasket 305, which is disposed between the cover plate 302 and the intermediate plate 303. A through fourth light-transmitting hole 309 is provided on the gasket 305. The fourth light-transmitting hole 309 is aligned and connected with the second light-transmitting hole 307, and the inner diameter of the fourth light-transmitting hole 309 is smaller than the inner diameter of the second light-transmitting hole 307.

[0117] Understandably, the inner diameter of the fourth light-transmitting hole 309 of the gasket 305 is the maximum aperture diameter that the camera module 300 can obtain, that is, the maximum exposure diameter of the camera module 300, and each blade 304, in the unfolded state, has its first end 315 surrounding the fourth light-transmitting hole 309.

[0118] Please refer to Figure 5 and Figure 7 In some embodiments, the notch structure 316 is an arc-shaped notch, and the arc-shaped edge of the arc-shaped notch is adapted to the hole wall of the fourth light-transmitting hole 309.

[0119] Understandably, when each blade 304 is in the deployed state, in order to minimize the deployment path of the blade 304, the notch structure 316 can be set as an arc-shaped notch, and the arc-shaped edge of the arc-shaped notch is adapted to the hole wall of the fourth light-transmitting hole 309. Here, the two are adapted to each other, meaning that the arc or curvature of the arc-shaped edge of the arc-shaped notch is the same as the arc or curvature of the fourth light-transmitting hole 309. In this way, each blade 304 only needs to move a relatively small displacement to be housed around the fourth through hole of the gasket 305.

[0120] In some embodiments, the camera module 300 further includes a lens barrel (not shown), the image end of which is connected to one end of the base 301 away from the intermediate plate 303, and the lens barrel is coaxially arranged with the first light-transmitting hole 306.

[0121] Please refer to Figure 8 Thirdly, this application also provides a drive motor 100, including a stator 10 and a mover 20. The stator 10 and the mover 20 are movable relative to each other, and structures, components, etc., that need to be driven can be mounted on the stator 10 or the mover 20. For example, in an aperture device, blades 304 that need to be opened and closed can be connected to the mover 20, so that each blade 304 opens and closes synchronously or asynchronously under the drive of the corresponding mover 20.

[0122] Specifically, the stator 10 includes at least two magnetic components 11, each magnetic component 11 is arranged side by side along the first direction X, and the mover 20 is selectively magnetically attracted and adapted to each magnetic component 11, and moves linearly back and forth in the first direction X.

[0123] Understandably, the arrangement direction of each magnetic component 11 determines the direction of movement of the mover 20. That is, the mover 20 moves linearly back and forth along the first direction X under the magnetic attraction of each magnetic component 11. Here, selective magnetic attraction means that the mover 20 and each magnetic component 11 are not in a state of mutual magnetic attraction in real time, but are in a state of mutual magnetic attraction at a certain moment. Furthermore, the first direction X can be any direction, or it can be determined by the movement trajectory of the target object to be driven.

[0124] The structural composition of the magnetic component 11 and the moving part 20 can be adjusted according to actual usage requirements. For example, both the magnetic component 11 and the moving part 20 may include a magnetically controllable structure. Here, the magnetically controllable structure includes, but is not limited to, a coil, a combination of a magnetic structure and a displacement structure, or a combination of a magnetic structure and a shielding structure. Understandably, the magnetically controllable structure generates magnetism and forms a magnetic field under specific conditions. For example, when a coil is energized, a corresponding magnetic field is formed around the coil. At this time, both the magnetic component 11 and the moving part 20 can form magnetic fields under corresponding conditions, and through the interaction force between the magnetic fields, the moving part 20 moves relative to each magnetic structure.

[0125] Alternatively, the magnetic component 11 may include a magnetically controllable structure, and the moving part 20 may include a permanent magnet or a magnetically attracted metal part. Here, the magnetic attraction force of the magnetic component 11 can be triggered by corresponding conditions, while the moving part 20 always has a corresponding magnetic field, which is also an inherent characteristic of permanent magnets or magnetically attracted metal parts.

[0126] Alternatively, the magnetic component 11 may include a permanent magnet or a magnetically attracted metal part, and the moving part 20 may include a magnetically controllable structure. Here, the magnetic attraction force of the moving part 20 may be triggered by corresponding conditions, while the magnetic component 11 may always have a corresponding magnetic field.

[0127] Of course, in actual use, the drive motor 100 can also be applied to other scenarios, such as retractable rear or front cameras, retractable drive devices, etc.

[0128] The drive motor 100 provided in this application embodiment includes a magnetically controllable connection structure in at least one of the magnetic components 11 or the mover 20 of the stator 10, so that it is triggered under the corresponding magnetic field conditions of the magnetic components 11 or the mover 20 of the stator 10, thereby making the movement position of the mover 20 relative to the stator 10 controllable, and also controlling the feed amount of the mover 20 moving in the first direction X. Thus, when this drive motor 100 is applied to fields such as aperture devices, the movement accuracy can be significantly improved, for example, the opening and closing accuracy of the blades 304 in an aperture device.

[0129] Please refer to the figure. In some embodiments, the drive motor 100 further includes a plurality of displacement sensors 40, which are used to monitor the movement position of the moving part 20 relative to the magnetic component 11 in the first direction X.

[0130] For example, the displacement sensor 40 is a Hall sensor, and each Hall sensor is arranged sequentially along the first direction X to monitor the relative position of the moving part 20 relative to each magnetic component 11.

[0131] For example, the displacement sensor 40 can be an infrared sensor, which monitors the positional distance of the moving part 20 relative to each magnetic component 11 by infrared ranging.

[0132] Thus, when the relative position of the driven target object needs to be fine-tuned, the moving position of the current moving part 20 can be adjusted according to the data monitored by the corresponding displacement sensor 40.

[0133] Referring to the figures, in some embodiments, the drive motor 100 further includes a main control board 30, and each magnetic component 11 is electrically connected to the main control board 30. That is, the main control board 30 is used to control the signal on / off state and the on / off frequency of each magnetic component 11.

[0134] For example, the main control board 30 can sequentially switch power on and off each magnetic component 11 along the positive direction of the first direction X. For instance, along the direction in which the magnetic components 11 are arranged side by side, the main control board 30 applies a positive current only to the magnetic component 11 at the first position, and the magnetic field formed drives the moving part 20 to move in the positive direction. When the moving part 20 moves to the magnetic component 11 at the second position, the main control board 30 cuts off the positive current to the magnetic component 11 at the first position, and then applies a positive current to the magnetic component 11 at the second position, and so on, so that the moving part 20 can move relative to the magnetic component 11 along the positive direction of the first direction X. At this time, the driven target object moves in a straight line. And when the moving part 20 needs to move in the opposite direction of the first direction X, the main control board 30 can sequentially switch power on and off the magnetic component 11 along the opposite direction of the first direction X. Then, the driven target object moves in a straight line.

[0135] Specifically, in some embodiments, the displacement sensor 40 is a Hall sensor, and the Hall sensor is also disposed on the main control board 30. The Hall sensor is located between two adjacent magnetic components 11. That is, the Hall sensor is used to detect the strength of the magnetic field of the moving part 20 to obtain its position distance relative to each magnetic component 11, so as to provide a basis for the main control board 30 to turn the current on and off to each magnetic component 11, the direction of the current flow, and the frequency of the on and off.

[0136] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A drive motor, characterized in that, include: The stator section includes at least two magnetic components, each of which is arranged side by side along a first direction; The moving part is selectively magnetically attracted and adapted to each of the magnetic components, and performs linear reciprocating movement in the first direction; Wherein, both the magnetic component and the moving part include a magnetically controllable structure; or, the magnetic component includes a magnetically controllable structure, and the moving part includes a permanent magnet or a magnetically attractable metal part; or, the magnetic component includes a permanent magnet or a magnetically attractable metal part, and the moving part includes a magnetically controllable structure, with each of the magnetically controllable structures operating relatively independently.

2. The drive motor according to claim 1, characterized in that: The drive motor also includes several displacement sensors, which are used to monitor the movement position of the moving part relative to the magnetic component in the first direction.

3. A camera module, characterized in that: The device includes a base, a cover plate disposed on the base, an intermediate plate disposed between the base and the cover plate, a plurality of blades that move relative to the intermediate plate, and a plurality of drive motors as described in claim 1 or 2. Each drive motor corresponds to each blade. Each magnetic component of the drive motor is disposed on the base. The moving part of the drive motor is disposed on the intermediate plate. Each blade is connected to the moving part of the corresponding drive motor.

4. The camera module according to claim 3, characterized in that: The base has a through first light-transmitting hole, the middle plate has a through second light-transmitting hole, and the cover plate has a through third light-transmitting hole. The first light-transmitting hole, the second light-transmitting hole, and the third light-transmitting hole are arranged on the same axis. Each blade opens and closes under the drive of the moving part of the drive motor to block the second light-transmitting hole.

5. The camera module according to claim 3, characterized in that: The base has a receiving groove for accommodating the magnetic component of the drive motor, and the intermediate plate has a first guide groove for sliding the moving part of the drive motor, the first guide groove corresponding to the receiving groove.

6. The camera module according to any one of claims 3 to 5, characterized in that: The blade has mounting holes for mounting the moving part of the drive motor.

7. The camera module according to claim 6, characterized in that: The blade is also provided with a mounting cover, which covers the moving part of the drive motor; or, the cover plate is provided with a second guide groove for the mounting cover to slide.

8. The camera module according to claim 4, characterized in that: The blade has a first end facing the second light-transmitting hole, and the edge of the first end of each blade is straight, or the first end of each blade has a notch structure.

9. The camera module according to claim 8, characterized in that: The camera module also includes a gasket, which is disposed between the cover plate and the intermediate plate. The gasket has a through fourth light-transmitting hole, which is aligned and connected with the second light-transmitting hole. The inner diameter of the fourth light-transmitting hole is smaller than the inner diameter of the second light-transmitting hole.

10. The camera module according to claim 9, characterized in that: The notch structure is an arc-shaped notch, and the arc-shaped edge of the arc-shaped notch is adapted to the hole wall of the fourth light-transmitting hole.

11. The camera module according to any one of claims 4, 5, 7, 8, and 9, characterized in that: The camera module also includes a lens barrel, the image end of which is connected to the end of the base away from the middle plate, and the lens barrel is coaxially arranged with the first light-transmitting hole.

12. A terminal device, characterized in that: The device includes a housing and a camera module as described in claims 3 to 11, wherein the housing has an opening and the camera module is disposed at the opening.

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