Motor, camera module and electronic device

Abstract

Provided in the present application are a motor, a camera module and an electronic device. The motor comprises a fixed base, a moving stage, a driving assembly and a self-locking assembly. The driving assembly is configured to drive the moving stage to move relative to the fixed base; the fixed base has two locking holes directly facing each other; the self-locking assembly is mounted on the moving stage and comprises a driving member and two retractable members, the driving member being configured to drive the two retractable members to extend and retract simultaneously; when the motor is in a locked state, the two retractable members extend into the corresponding locking holes; and when the motor is in an unlocked state, the two retractable members are located outside the corresponding locking holes. By means of the design of the self-locking assembly, the present application improves the stability of locking between the moving stage and the fixed base, and enables simultaneous locking and unlocking of two sides of the self-locking assembly.

Description

Motors, camera modules and electronic devices

[0001] This application claims priority to Chinese Patent Application No. 202411035399.7, filed on July 30, 2024, entitled "Motor, Camera Module and Electronic Device", and Chinese Patent Application No. 202411247980.5, filed on September 5, 2024, entitled "Motor, Camera Module and Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of shooting equipment technology, and in particular to a motor, camera module and electronic equipment. Background Technology

[0003] In recent years, with the development of optical imaging technology, people have increasingly higher requirements for the camera function of portable electronic devices, requiring the camera modules of electronic devices to achieve shooting at different focal lengths, such as telephoto shooting and macro shooting.

[0004] Typically, camera modules switch between different focal length shooting modes by moving a prism. However, due to the lack of self-locking capability or poor self-locking capability of current camera modules, their reliability is poor, and they are prone to collision risks when shooting at different focal lengths. Summary of the Invention

[0005] This application provides a motor, a camera module, and an electronic device. The motor includes a fixed base, a motion stage, a drive assembly, and a self-locking assembly. The motion stage is used to support optical elements. The dual output shaft design of the self-locking assembly improves the stability of the locking between the motion stage and the fixed base, and enables simultaneous locking and unlocking from both sides of the self-locking assembly, which improves the smoothness of locking and unlocking and reduces the risk of impact.

[0006] In a first aspect, this application provides a motor. The motor includes a fixed base, a motion platform, a drive assembly, and a self-locking assembly. The self-locking assembly is fixedly mounted on the motion platform and includes a drive member and two telescopic members. The drive member has two output shafts arranged opposite to each other, and one telescopic member is connected to one output shaft. The drive member is used to drive the two telescopic members to extend and retract simultaneously. The fixed base has at least two locking holes facing each other, located on opposite sides of the drive member. The drive assembly connects the motion platform and the fixed base and is used to drive the motion platform to move relative to the fixed base to align the telescopic members with the locking holes. One telescopic member corresponds to one locking hole. When the motor is in a locked state, both telescopic members extend into their corresponding locking holes. When the motor is in an unlocked state, both telescopic members are located outside their corresponding locking holes.

[0007] In this application, by setting two output shafts, the dual-side drive of the drive component can be realized, so as to simultaneously drive the two transmission shafts located on both sides of the drive component to rotate, thereby driving the two telescopic components to move, so as to realize that the two screws move in opposite directions or in opposite directions at the same time, which can realize the simultaneous locking and unlocking of both sides of the self-locking component, which is beneficial to improving the smoothness of locking and unlocking.

[0008] In this application, the motion stage can drive the optical element to move relative to the fixed base, thereby changing the position of the optical element and thus changing the distance between the optical element and the lens group, thereby changing the focal length of the camera module lens, that is, realizing the switching of the lens focal length. By inserting the telescopic component into the locking hole, a physical and mechanical stabilizing self-locking can be achieved. That is, the self-locking component can lock the motion stage and the fixed base, thereby realizing the self-locking of the motor, thus stabilizing the lens and improving the reliability of the lens when the electronic device shakes or is dropped.

[0009] In some possible implementations, the telescopic component includes a screw and a nut; the screw is connected between the output shaft and the nut, passes through the nut, and is threadedly connected to the nut; the nut is fixedly mounted on the motion platform; the drive component is used to drive the screw to rotate relative to the nut, and the screw extends or retracts relative to the motion platform under the drive of the output shaft.

[0010] In this implementation, the screw and nut in the telescopic component are connected by a nut, allowing the telescopic component to remain stably stationary at any position after the drive component stops, thus achieving power-off locking of the self-locking assembly, which is beneficial for energy saving. Since power-off locking requires no external force, when the drive component is energized, no external force other than the friction between the screw and nut is needed to overcome, reducing the driving force required for the screw to move relative to the nut, further contributing to energy saving. Furthermore, since the drive component outputs the drive screw through rotation, and the screw and nut cooperate to convert rotation into linear motion, breaking the lock of the self-locking assembly when it is power-off requires applying a corresponding rotational force to the screw. This makes the locked state of the self-locking assembly difficult to break, improving the stability of the self-locking assembly when power-off.

[0011] In some possible implementations, the nut has a threaded hole with an internal thread; the screw has an external thread that passes through the threaded hole and is threadedly connected to the internal thread; the external threads of the screws in the two telescopic components are in opposite directions, and the internal threads of the nuts in the two telescopic components are in opposite directions.

[0012] In this implementation, an internal thread is provided in the threaded hole so that the external thread of the screw can be threadedly connected to the internal thread of the nut, thereby allowing the screw to move relative to the nut in a third direction through threaded engagement. The thread directions are opposite so that the first screw and the second screw can move simultaneously in opposite directions or simultaneously in opposite directions under the drive of the driving component.

[0013] In some possible implementations, the external thread has a first thread start point. In a plane perpendicular to the axis of the screw and passing through the first thread start point, the first thread start point is connected to the center of the screw to form a first connecting line. The first connecting line has a first included angle with the axis of the screw. The difference between the first included angles of the screws in the two telescopic members is less than or equal to 2°, which is beneficial to ensure that the feed amount of the screws on both sides of the driving member tends to be consistent under the drive of the driving member.

[0014] In some possible implementations, the internal thread has a second thread start point. In a plane perpendicular to the axis of the nut and passing through the second thread start point, the second thread start point is connected to the center of the nut to form a second connecting line. The second connecting line has a second included angle with the axis of the nut. The difference between the second included angles of the nuts in the two telescopic components is less than or equal to 2°, which is beneficial to ensure that the feed amount of the screws on both sides of the driving component tends to be consistent under the drive of the driving component.

[0015] In some possible implementations, the characteristic is that the external threads of the screws in the two telescopic members have the same pitch, so that the two screws can move in opposite directions or in opposite directions simultaneously under the drive of the driving member.

[0016] In some possible implementations, the internal threads of the nuts in the two telescopic components have the same pitch, so that the two screws can move in opposite directions or in opposite directions simultaneously under the drive of the drive component.

[0017] In this implementation, the drive shafts, screws, and nuts on both sides of the drive component in the self-locking assembly enable synchronous movement of the screws on both sides of the drive component in opposite directions, thereby achieving stable locking or unlocking. Furthermore, locking and unlocking on both sides can be achieved simultaneously. Locking via two screws on both sides improves the stability of the motor's self-locking mechanism and enhances structural strength.

[0018] In some possible implementations, the self-locking assembly also includes a drive shaft, with a first end connected to an output shaft and a second end connected to a screw. The screw has a drive groove, and the second end of the drive shaft is located within the drive groove. The second end of the drive shaft has a drive surface located within the drive groove, and there is an assembly gap between the drive surface and the side wall of the drive groove. The drive surface abuts against the side wall of the drive groove under the rotation of the drive shaft, thereby driving the screw to rotate.

[0019] In this implementation, the transmission shaft serves to connect the output shaft and the telescopic component. Since the output shaft is part of the drive component's own structure, the output of the drive component may be limited by the shape of the output shaft. By designing the shape of the transmission shaft, the form of the drive component's transmission connection can be changed so that the drive component can better match the telescopic component.

[0020] In some possible implementations, the second end of the drive shaft has multiple drive surfaces, the second end of the drive shaft is adapted to the shape of the drive groove, each drive surface is provided corresponding to a side wall of the drive groove, and there is an assembly gap between each drive surface and the corresponding side wall of the drive groove.

[0021] In this implementation, there can be an assembly gap between the transmission surface and the sidewall of the transmission groove to allow for assembly tolerance, thereby preventing the transmission shaft from jamming while driving the screw to rotate relative to the nut. Furthermore, the use of multiple transmission surfaces allows the transmission shaft to drive the screw to rotate in multiple directions, which helps improve transmission stability.

[0022] In some possible implementations, the telescopic component also includes an elastic element that fills the assembly gap.

[0023] In this implementation, the elastic element can be filled in the assembly gap so that the transmission surface can squeeze the elastic element under the rotation of the transmission shaft. The elastic element can deform so that the transmission surface can move relative to the transmission shaft by squeezing the elastic element, thereby playing a tolerance role. It can be regarded as providing a transmission margin space between the transmission shaft and the screw, thereby avoiding jamming during the process of the transmission shaft driving the screw to rotate relative to the nut.

[0024] In some possible implementations, the assembly gap D satisfies: 0 < D1 ≤ 0.2 mm.

[0025] In this implementation, the size of the assembly gap satisfies the above relationship, which is beneficial for forming assembly tolerance, avoiding jamming during the rotation of the screw relative to the nut by the drive shaft, and also avoiding excessive gap, which would cause lag in the transmission between the drive shaft and the screw.

[0026] In some possible implementations, the number of transmission surfaces of the transmission shafts in the two telescopic components is the same, and the transmission surfaces of the two transmission shafts are set in a one-to-one correspondence, and the corresponding transmission surfaces of the two transmission shafts are set in parallel.

[0027] In this implementation, the transmission surfaces corresponding to the two transmission shafts are arranged in parallel so that the rotation of the first transmission shaft and the rotation of the second transmission shaft can be synchronized, which is beneficial to the consistency of the feed amount of the two screws on both sides of the drive component.

[0028] In some possible implementations, the screw has a drive groove, the second end of the drive shaft is elastic, the second end of the drive shaft is located in the drive groove and abuts against the side wall of the drive groove.

[0029] In this implementation, since the second end of the drive shaft is elastic, there is no need to set a gap between the second end of the drive shaft and the side wall of the drive groove. The tolerance function can be achieved by the elastic deformation of the second end of the drive shaft, thus preventing the drive shaft from jamming when it drives the screw to rotate relative to the nut.

[0030] In some possible implementations, the motion platform has an opening, a nut is fixedly installed in the opening, and a screw passes through the nut to pass through the opening.

[0031] In this implementation, by setting an opening so that the telescopic component of the self-locking assembly can extend from the receiving space to the outside of the moving platform, its telescopic function is realized, thereby realizing the locking and unlocking functions described above.

[0032] In some possible implementations, a limiting groove is provided on the outer periphery of the nut, and the limiting groove is engaged with the inner wall of the opening.

[0033] In this implementation, a limiting groove is provided on the outer periphery of the nut. There can be two limiting grooves, which can be arranged opposite each other, and the inner walls of the limiting grooves can form an L-shaped limiting surface. This allows the limiting groove to engage with the inner wall of the opening. Because the nut is limited by the inner wall of the opening, the drive component, through the rotation of the output shaft, can drive the transmission shaft to rotate. The rotation of the transmission shaft causes the screw to rotate relative to the nut. Since the nut is limited by the inner wall of the opening and cannot move, the screw can rotate relative to the nut while simultaneously moving relative to the nut in a third direction, thereby achieving extension or retraction relative to the moving platform.

[0034] In some possible implementations, the motor also includes a self-locking detection component, which includes a sensing magnet and a detection chip; the sensing magnet is installed at the end of the screw away from the drive component, and the detection chip is installed in the locking hole, which is used to detect the length of the screw extending into the locking hole.

[0035] In this implementation, the magnetic field change of the sensing magnet is detected by the detection chip to detect the distance between the sensing magnet and the detection chip, thereby determining the relative position of the telescopic component and the locking hole, and thus determining whether the telescopic component has entered the locking hole or whether the telescopic component has disengaged from the locking hole.

[0036] In this implementation, since the sensing magnet is installed inside the screw's mounting port and the detection chip is installed inside the locking hole, the detection chip can detect the position of the sensing magnet relative to the locking hole when the screw moves relative to it. This allows for accurate detection of the screw's relative position to the locking hole, determining whether the screw has entered the locking hole to lock or disengaged to unlock, thus improving the accuracy of motor locking and unlocking. Furthermore, the placement of the sensing magnet and detection chip allows for the determination of the screw's stroke, preventing excessive stroke that could cause the threads to seize up.

[0037] In some possible implementations, the telescopic component includes a screw and a nut; the screw is fixedly connected to the drive component, passes through the nut, and is threadedly connected to the nut; the nut is mounted on the motion platform, and the nut has a limiting structure that cooperates with the motion platform to restrict the rotation of the nut; the drive component is used to drive the screw to rotate so that the nut extends or retracts relative to the motion platform.

[0038] In this implementation, the moving platform can be locked to the fixed base by extending the nut relative to the moving platform, and the moving platform can be unlocked to the fixed base by retracting the nut relative to the moving platform.

[0039] The limiting structure can be a protruding structure or a groove structure, etc. Correspondingly, a matching structure is provided in the opening of the moving platform to prevent the nut from rotating, but to allow it to move relative to the moving platform in a third direction. For example, when the limiting structure is a protruding structure, the inner wall of the opening is provided with a groove structure, and the two sides cooperate to achieve a sliding connection; or, when the limiting structure is a groove structure, the inner wall of the groove can be provided with a protruding structure, and the two sides cooperate to achieve a sliding connection.

[0040] In some possible implementations, the motion stage has a bearing surface that faces away from the bottom wall of the fixed base and is inclined relative to the bottom wall of the fixed base. The bearing surface is used to support optical components. The motion stage also has a receiving space located between the bearing surface and the bottom wall of the fixed base for receiving self-locking components.

[0041] In this implementation, by placing the self-locking component and the optical element on opposite sides of the bearing surface of the motion stage, and by accommodating the self-locking component through the accommodating space, the space occupied by the self-locking component is utilized within the space of the motion stage itself, thereby reducing the additional space occupied by the self-locking component, improving the space utilization of the motor, and facilitating the miniaturization of the motor.

[0042] In some possible implementations, the inner wall of the containment space includes a mounting wall, which is designed to mimic the outer surface of the drive component, and the drive component is mounted on the mounting wall.

[0043] In this implementation, the mounting wall within the receiving space can be designed to mimic the outer surface of the drive component, allowing the drive component to be mounted on the mounting wall to improve the stability of the drive component.

[0044] In some possible implementations, the motion stage has a limiting hole that connects to the receiving space; the drive component has an end plate, a portion of which is located within the limiting hole.

[0045] In this implementation, the locking and limiting of the limiting hole can improve the assembly stability between the drive component and the motion platform, thereby further reinforcing the installation of the drive component.

[0046] In some possible implementations, the moving platform is locked to the fixed base, and the telescopic component extends into the locking hole for a length greater than or equal to 0.5 mm to improve the stability of the lock between the moving platform and the fixed base.

[0047] In some possible implementations, the motor also includes a position detection component, which includes a magnetic grating and a tunnel magnetoresistive element; the magnetic grating is mounted on a fixed base and extends along the direction of movement of the moving stage relative to the fixed base; the tunnel magnetoresistive element is mounted on the moving stage and is at least partially opposite to the magnetic grating; the position detection component is used to detect the position of the tunnel magnetoresistive element relative to the magnetic grating in order to detect the position of the moving stage relative to the fixed base.

[0048] In this implementation, the position detection component is used to detect the position of the moving stage relative to the fixed base, thereby assisting in the alignment of the telescopic component with the locking hole. This improves the accuracy of the telescopic component's insertion into the locking hole, reduces or even avoids accidental contact with the fixed base when the telescopic component extends, and thus helps to improve the motor's service life. Specifically, by detecting the position of the tunnel magnetoresistive field relative to the magnetic grating, the position of the moving stage relative to the fixed base can be detected, thereby assisting in the alignment of the telescopic component with the locking hole.

[0049] In some possible implementations, the fixed base is provided with a first set of locking holes and a second set of locking holes arranged at intervals, each of the first set of locking holes and the second set of locking holes including two locking holes facing each other; the drive assembly is used to drive the motion stage to move relative to the fixed base to a first position to align the telescopic member with the first set of locking holes; the drive assembly is also used to drive the motion stage to move relative to the fixed base to a second position to align the telescopic member with the second set of locking holes.

[0050] In this implementation, a moving platform drives the optical element to move, allowing the optical element to be combined with different lenses at different positions to form lenses with different focal lengths. Due to the arrangement of the drive shafts, screws, and nuts on both sides of the drive component in the self-locking assembly, the screws on both sides of the drive component can move synchronously in opposite directions, thereby achieving stable locking or unlocking, and the locking and unlocking on both sides can be achieved simultaneously. Locking via two screws on both sides improves the stability of the motor self-locking and enhances structural strength.

[0051] In some possible implementations, the driving component is a stepper motor, which is beneficial for controlling the rotation of the output shaft of the driving component to achieve stable rotation of the output shaft, and also helps to ensure consistent feed rates for the screws on both sides.

[0052] Secondly, this application provides a camera module. The camera module includes a lens and any of the aforementioned motors. The lens includes an optical element and a lens group. The optical element is mounted on the motion stage of the motor, and the lens group is located on the image side of the optical element.

[0053] Optical elements are used to change the light incident on the camera module in the first direction (Z) to propagate in the second direction (X).

[0054] In this application, by inserting the telescopic component into the locking hole, a physical and mechanical stable self-locking can be achieved. That is, the self-locking component can lock the moving platform and the fixed base, thereby achieving self-locking of the motor, and thus self-locking of the camera module, which in turn stabilizes the lens and helps improve the reliability of the lens when the electronic device shakes or falls.

[0055] In some possible implementations, the lens also includes a first lens group and a second lens group, which are spaced apart; a motion stage is used to move the optical elements to a first position to receive light passing through the first lens group; the motion stage is also used to move the optical elements to a second position to receive light passing through the second lens group.

[0056] In this implementation, a moving stage drives the optical element to move, allowing the optical element to be combined with different lenses at different positions to form lenses with different focal lengths. For example, at a first position, a first lens group, optical element, and lens group can form a first lens with a first focal length; at a second position, a second lens group, optical element, and lens group can form a second lens with a second focal length. The first focal length is different from the second focal length. Therefore, by moving the optical element to different positions using a moving stage, different lenses can be switched, such as switching between a first lens and a second lens. Similarly, by setting more lens combinations, even more focal lengths can be switched.

[0057] Thirdly, this application provides an electronic device. The electronic device includes a housing and a camera module as described above, the camera module being mounted on the housing.

[0058] In this application, by inserting the telescopic component into the locking hole, a physical and mechanical stable self-locking can be achieved. That is, the self-locking component can lock the moving platform and the fixed base, thereby achieving self-locking of the camera module, which in turn stabilizes the lens and improves the reliability of the lens when the electronic device shakes or falls, thus improving the user experience of the electronic device. Attached Figure Description

[0059] Figure 1A is a schematic diagram of the structure of the electronic device provided in some embodiments of this application;

[0060] Figure 1B is a partial exploded view of the electronic device shown in Figure 1A;

[0061] Figure 2A is a schematic diagram of the structure of the electronic device shown in Figure 1A cut along line AA in some embodiments;

[0062] Figure 2B is a structural schematic diagram of the electronic device shown in Figure 1A cut along line AA in some other embodiments;

[0063] Figure 3 is a schematic diagram of the motor in some embodiments of the electronic device shown in Figure 2A;

[0064] Figure 4A is a schematic diagram of the structure of the motion platform mounting part in the motor shown in Figure 3 in some embodiments;

[0065] Figure 4B is a schematic diagram of the fixed base mounting part of the motor shown in Figure 3 in some embodiments;

[0066] Figure 5 is a partial structural exploded view of the motor shown in Figure 3 in some embodiments;

[0067] Figure 6 is a structural schematic diagram of the structure shown in Figure 4A from another perspective;

[0068] Figure 7 is a partial structural exploded view of the structure shown in Figure 4A in some embodiments;

[0069] Figure 8A is a schematic diagram of the self-locking component in some embodiments of the structure shown in Figure 7;

[0070] Figure 8B is a partial structural exploded view of the self-locking component shown in Figure 8A in some embodiments;

[0071] Figure 9A is a schematic diagram of the moving platform in some embodiments of the structure shown in Figure 7;

[0072] Figure 9B is a structural schematic diagram of the moving platform shown in Figure 9A from another perspective;

[0073] Figure 10A is a schematic diagram of the structure of the self-locking component shown in Figure 8A installed on the motion platform shown in Figure 9A in some embodiments;

[0074] Figure 10B is a schematic diagram of the structure shown in Figure 10A after being cut along line EE in some embodiments;

[0075] Figure 11 is a schematic diagram of the structure shown in Figure 10A after being cut along line FF in some embodiments;

[0076] Figure 12 is a schematic diagram of the structure of the self-locking component shown in Figure 8A after being cut along line DD in some embodiments;

[0077] Figure 13 is a schematic diagram of the drive shaft in some embodiments of the self-locking assembly shown in Figure 8A;

[0078] Figure 14 is a schematic diagram of the screw in some embodiments of the self-locking assembly shown in Figure 8A;

[0079] Figure 15A is a schematic diagram of the nut in some embodiments of the self-locking assembly shown in Figure 8A;

[0080] Figure 15B is a schematic diagram of the structure of the nut in Figure 15A after it has been cut along the cross-section in some embodiments;

[0081] Figure 16 is a partial structural decomposition diagram of the structure shown in Figure 4B in some embodiments;

[0082] Figure 17A is a schematic diagram of the fixed base in some embodiments of the structure shown in Figure 16;

[0083] Figure 17B is a structural schematic diagram of the fixed base shown in Figure 17A from another perspective;

[0084] Figure 18 is a partial exploded view of the fixed base shown in Figure 17A in some embodiments;

[0085] Figure 19A is a schematic diagram of the structure of the motor shown in Figure 3 after being cut open along line GG in some embodiments;

[0086] Figure 19B is a schematic diagram of the structure in some embodiments when the motor shown in Figure 3 is in the locked state and cut along HH.

[0087] Figure 20 is a schematic diagram of the structure in some embodiments after the motor shown in Figure 3 is cut open along HH when it is in the unlocked state.

[0088] Figure 21 is a structural schematic diagram of the self-locking assembly shown in Figure 8A after being cut along line DD in some other embodiments. Detailed Implementation

[0089] The embodiments of this application are described below with reference to the accompanying drawings.

[0090] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Multiple" refers to at least two.

[0091] The directional terms mentioned in the embodiments of this application, such as "upper", "lower", "inner", "outer", "top", "bottom", "side", etc., are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0092] In the embodiments of this application, the relative positional relationships mentioned, such as parallel, perpendicular, and aligned, are defined in relation to the current technological level, rather than being absolutely strict. Slight deviations are permissible; approximations of parallelism, perpendicularity, or alignment are all acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 and 10 degrees. Similarly, "A and B are perpendicular" means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80 and 100 degrees.

[0093] In the embodiments of this application, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," and "fourth" may explicitly or implicitly include one or more of that feature.

[0094] Please refer to Figures 1A and 1B. Figure 1A is a schematic diagram of the structure of the electronic device 1000 provided in some embodiments of this application; Figure 1B is a partially exploded schematic diagram of the electronic device 1000 shown in Figure 1A.

[0095] In some embodiments, the electronic device 1000 can be a mobile phone, tablet personal computer, laptop computer, smart screen, personal digital assistant (PDA), camera, personal computer, laptop computer, in-vehicle equipment, wearable device, augmented reality (AR) glasses, AR headset, virtual reality (VR) glasses, or VR headset, or other devices with camera functionality. In the embodiment shown in Figure 1A, the electronic device 1000 is described as a mobile phone; however, other types of electronic devices 1000 can also adopt similar structures, which will not be elaborated upon further below.

[0096] It is understood that Figures 1A and 1B only schematically show some of the components included in the electronic device 1000. The actual shape, size, location and construction of these components are not limited by Figures 1A and 1B. The electronic device 1000 may also include more or fewer components than those in Figures 1A and 1B.

[0097] In some embodiments, the electronic device 1000 may include a camera module 100, a screen 200, and a housing 300. The screen 200 is used to display images, videos, etc. The screen 200 may include a light-transmitting panel 2001 and a display screen 2002. The light-transmitting panel 2001 and the display screen 2002 are stacked and fixedly connected. The light-transmitting panel 2001 mainly serves to protect the display screen 2002 from dust. The material of the light-transmitting panel 2001 includes, but is not limited to, glass. The display screen 2002 may be a flexible display screen or a rigid display screen. For example, the display screen 2002 can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (MLED) display screen, a micro organic light-emitting diode (MOLED) display screen, a quantum dot light-emitting diode (QLED) display screen, a liquid crystal display (LCD), etc.

[0098] For example, the housing 300 is used to protect the internal electronic components of the electronic device 1000. The housing 300 may include a cover plate 3001, a frame 3002, and a decorative element 3003. The cover plate 3001 is located on the side of the display screen 2002 away from the light-transmitting panel 2001, and is stacked with the light-transmitting panel 2001 and the display screen 2002. The frame 3002 is fixed to the cover plate 3001. For example, the frame 3002 can be fixedly connected to the cover plate 3001 by adhesive. The frame 3002 may also be integrally formed with the cover plate 3001, that is, the frame 3002 and the cover plate 3001 are a single structure. The frame 3002 is located between the cover plate 3001 and the light-transmitting panel 2001. The light-transmitting panel 2001 can be fixed to the frame 3002 by adhesive. The light-transmitting panel 2001, the cover plate 3001, and the frame 3002 enclose the internal mounting space of the electronic device 1000. The internal installation space accommodates the display screen 2002. The cover plate 3001 can be made of materials such as metal, plastic, or glass. The cover plate 3001 can be a single-material panel or a panel structure composed of multiple materials and panels. The cover plate 3001 has a mounting opening 4113, and a decorative piece 3003 covers and is fixed to the mounting opening 4113.

[0099] For example, camera module 100 is used to capture photos / videos. For example, camera module 100 is mounted within housing 300, located within the internal mounting space of electronic device 1000. Camera module 100 can be used as a rear-facing camera. For example, the light-incident surface of camera module 100 faces decorative element 3003. Decorative element 3003 is used to protect camera module 100.

[0100] In some embodiments, the decorative element 3003 protrudes from the side of the cover plate 3001 away from the light-transmitting panel 2001. This increases the mounting space for the camera module 100 in the thickness direction of the electronic device 1000. In other embodiments, the decorative element 3003 may be flush with the cover plate 3001 or recessed into the internal mounting space of the electronic device 1000.

[0101] The decorative element 3003 has a through hole 3004. The through hole 3004 allows light from the scene to enter the light-receiving surface of the camera module 100. In some other embodiments, the electronic device 1000 may not include the decorative element 3003. In this case, the cover plate 3001 no longer has a mounting opening 4113, but the through hole 3004 is provided on the cover plate 3001, allowing light from the scene to enter the light-receiving surface of the camera module 100.

[0102] In some examples, there can be multiple through holes 3004, and different through holes 3004 can correspond to different lenses 20. For example, different through holes 3004 correspond to lenses 20 with different focal lengths.

[0103] In other examples, the number of through holes 3004 can be one, and different areas of through holes 3004 can correspond to different lenses 20, for example, different areas of through holes 3004 correspond to lenses 20 with different focal lengths.

[0104] It should be noted that in the embodiments described below, a lens 20 with one focal length is illustrated using a through hole 3004.

[0105] In some embodiments, the camera module 100 can also be used as a front-facing camera. For example, the light-incident surface of the camera module 100 faces the light-transmitting panel 2001. The display screen 2002 is provided with a light path avoidance structure. This light path avoidance structure allows light from the scene to pass through the light-transmitting panel 2001 and then enter the light-incident surface of the camera module 100. In some embodiments, the electronic device 1000 may also include one or more other camera modules (not shown in the figures), which are not strictly limited in this application.

[0106] In some embodiments, as shown in FIG1B, the electronic device 1000 may further include a circuit board 400 and an image processor 500. The circuit board 400 and the image processor 500 are located in the internal mounting space of the electronic device 1000. The image processor 500 is fixed to and electrically connected to the circuit board 400. The image processor 500 is communicatively connected to the camera module 100. The image processor 500 is used to acquire image data from the camera module 100 and process the image data. The communication connection between the camera module 100 and the image processor 500 may include data transmission via electrical connections such as wiring, or data transmission may be achieved through coupling or other means. It is understood that the camera module 100 and the image processor 500 may also achieve a communication connection through other methods capable of data transmission.

[0107] In some embodiments, the electronic device 1000 may further include an analog-to-digital converter (also known as an A / D converter, not shown in the figure). The analog-to-digital converter is connected between the camera module 100 and the image processor 500. The analog-to-digital converter is used to convert the signal generated by the camera module 100 into a digital image signal and transmit it to the image processor 500, whereby the image processor 500 processes the digital image signal and finally displays the image or video on the screen 200.

[0108] In some embodiments, the electronic device 1000 may further include a memory (not shown in the figure), which is communicatively connected to the image processor 500. The image processor 500 processes the digital image signal and then transmits the image to the memory, so that the image can be retrieved from the memory and displayed on the screen 200 at any time when it is needed to view the image later. In some embodiments, the image processor 500 may also compress the processed digital image signal before storing it in the memory to save memory space.

[0109] In some other embodiments, the electronic device 1000 may also not include the screen 200.

[0110] It is understood that the mounting position of the camera module 100 in the electronic device 1000 of the embodiments shown in Figures 1A and 1B is merely illustrative, and this application does not strictly limit the mounting position of the camera module 100. In some other embodiments, the camera module 100 may also be mounted in other locations on the electronic device 1000, for example, the camera module 100 may be mounted in the upper middle or upper right corner of the back of the electronic device 1000. In some other embodiments, the electronic device 1000 may include a terminal body and an auxiliary component that can rotate, move, or be detached relative to the terminal body, and the camera module 100 may also be disposed on the auxiliary component.

[0111] Please refer to Figures 2A and 2B. Figure 2A is a structural schematic diagram of the electronic device 1000 shown in Figure 1A cut along line AA in some embodiments; Figure 2B is a structural schematic diagram of the electronic device 1000 shown in Figure 1A cut along line AA in other embodiments.

[0112] For ease of illustration, in this embodiment, the thickness direction (i.e., the light incident direction) of the camera module 100 is designated as the Z-axis, the movement direction of the moving platform 2 relative to the fixed base 1 is designated as the X-axis, and the width direction of the camera module 100 is designated as the Y-axis, establishing a Cartesian coordinate system. It is understood that in other embodiments, other references may be used to establish the coordinate system, which is not limited here. The Z-axis direction is also referred to as the first direction Z, the X-axis direction as the second direction X, and the Y-axis direction as the third direction Y.

[0113] In some embodiments, the camera module 100 may include an optical system and a motor 10. The motor 10 may be used to carry some of the optical components in the optical system.

[0114] For example, the optical system may include a lens 20 and an image sensor 30. The lens 20 may include an optical element 201 and a lens group 202. The optical element 201 may be mounted on the motor 10, and the optical element 201, the lens group 202, and the image sensor 30 are spaced apart along the optical path of the lens 20.

[0115] In this embodiment, the optical element 201 is used to change the direction of light so that the light entering through the through-hole 3004 can be reflected to the image sensor 30. Specifically, the optical element 201 is used to change the light incident along the first direction Z to propagate along the second direction X.

[0116] The optical system may also include a rear prism 40, which can be located between the lens group 202 and the image sensor 30. By setting the rear prism 40, the optical path can be folded, which helps to increase the optical path length and shorten the length of the camera module 100, thus facilitating the miniaturization of the camera module 100. In addition, since the rear prism 40 can change the direction of light propagation, the image sensor 30 can be placed at an angle, thereby reducing the height of the image sensor 30 (i.e., the dimension in the first direction Z), which in turn helps to reduce the shoulder height of the camera module 100, facilitating the thinner and lighter design of the camera module 100, and thus contributing to the thinner and lighter design of the electronic device 1000.

[0117] For example, the motor 10 may include a fixed base 1, a motion stage 2, a drive assembly 3, a self-locking assembly 4, and a position detection assembly 5. The drive assembly 3 drives the motion stage 2 to move relative to the fixed base 1. The self-locking assembly 4 locks the motion stage 2 to the fixed base 1 to prevent movement of the motion stage 2 relative to the fixed base 1. The self-locking assembly 4 also unlocks the motion stage 2, allowing the drive assembly 3 to drive the motion stage 2 to move relative to the fixed base 1. The position detection assembly 5 detects the position of the motion stage 2 relative to the fixed base 1.

[0118] The motion stage 2 can be connected to the fixed base 1. The motion stage 2 is used to support the optical element 201, and the drive assembly 3 is used to drive the motion stage 2 to move the optical element 201 relative to the fixed base 1. The decorative part 3003 has multiple through holes 3004, and the arrangement direction of the multiple through holes 3004 is the same as the movement direction of the motion stage 2.

[0119] In this embodiment, the motion stage 2 can drive the optical element 201 to move relative to the fixed base 1, thereby changing the position of the optical element 201, thereby changing the through hole 3004 corresponding to the optical element 201, and the distance between the optical element 201 and the lens group 202, thereby realizing the change of the focal length of the lens 20 of the camera module 100, that is, realizing the switching of the focal length of the lens 20, for example, realizing the switching between telephoto shooting and macro shooting.

[0120] The load capacity of the motion stage 2 can be greater than or equal to 2000 mg. In this embodiment, the load capacity of the motion stage 2 refers to the weight it can bear on the optical element 201. That is, the motion stage 2 provided in this embodiment can move the optical element 201 with a weight greater than or equal to 2000 mg relative to the fixed base 1, achieving ultra-heavy load movement. For example, the load capacity of the motion stage 2 can be 2000 mg, 2500 mg, or 3000 mg, etc., so that the motion stage 2 can bear the prism.

[0121] It should be noted that the load capacity of the motion stage 2 can be greater than or equal to 2000mg, which means that the motion stage 2 has a large load capacity. It does not limit the optical element 201 carried by the motion stage 2. Understandably, the motion stage 2 can also carry optical elements 201 with lighter weight, such as optical elements 201 weighing less than 2000mg.

[0122] In some other embodiments, the motion stage 2 may also carry the lens group 202 to drive the lens group 202 to move along the second direction X to achieve zooming or focusing.

[0123] In some examples, optical element 201 may include a prism and a lens. The lens of optical element 201 may be connected to the prism and move with the prism so that the focal length of lens 20 can be changed when optical element 201 moves with the motion stage 2.

[0124] The lens of the optical element 201 can be located on the object side of the prism of the optical element 201, or it can be located on the image side of the prism of the optical element 201. Alternatively, there can be multiple lenses, some of which are located on the object side of the prism of the optical element 201 and others are located on the image side of the prism of the optical element 201.

[0125] It should be noted that by changing the distance between the optical element 201 and the lens group 202, the focal length of the lens 20 can be changed, thereby achieving focal length switching of the lens 20. In some embodiments, within different focal length ranges, the focal length within that focal length range can be changed by moving the lens group 202.

[0126] It should be noted that in some other embodiments, the optical element 201 may also be a combination of a reflector and a lens, which is not limited here.

[0127] In other examples, lens 20 may also include a first lens group 203 and a second lens group 204. The first lens group 203 and the second lens group 204 may be spaced apart along the movement direction of the motion stage 2. The motion stage 2 is used to move the optical element 201 to a first position (see Figure 2A) to receive light passing through the first lens group 203. The motion stage 2 is also used to move the optical element 201 to a second position (see Figure 2B) to receive light passing through the second lens group 204.

[0128] In this embodiment, the optical element 201 is moved by the motion stage 2, allowing it to be combined with different lenses at different positions to form lenses 20 with different focal lengths. For example, at a first position, the first lens group 203, the optical element 201, and the lens group 202 can form a first lens with a first focal length; at a second position, the second lens group 204, the optical element 201, and the lens group 202 can form a second lens with a second focal length. The first focal length is different from the second focal length. Therefore, by moving the optical element 201 to different positions by the motion stage 2, different lenses 20 can be switched, such as switching between a first lens and a second lens. Similarly, by setting more lens combinations, even more focal lengths can be switched.

[0129] The first lens group 203 and the second lens group 204 can be installed on the decorative piece 3003 or the cover plate 3001, and are set with corresponding through holes 3004, so that the optical element 201 can be moved to different through holes 3004 to achieve focal length switching. For example, the first lens group 203 can be installed in one through hole 3004, and the second lens group 204 can be installed in another through hole 3004.

[0130] The first lens group 203 may include one or more lenses.

[0131] The second lens group 204 may include one or more lenses.

[0132] The first mirror group 203 and the second mirror group 204 may be the same or different.

[0133] In some embodiments, the lens group 202 can move along the second direction X to achieve zooming or focusing of the camera module 100. In this embodiment, the movement of the lens group 202 facilitates continuous zooming of the camera module 100, enabling stepless adjustment of the focal length and improving the user experience.

[0134] For example, when the optical element 201 is in the first position, continuous zoom within a first focal length can be achieved by coordinating the movement of the lens group 202. When the optical element 201 is in the second position, continuous zoom within a second focal length can be achieved by coordinating the movement of the lens group 202. The maximum value of the first focal length is smaller than the maximum value of the second focal length, and the first and second focal lengths partially overlap. For example, the first focal length is 15mm to 22mm, and the second focal length is 22mm to 55mm. Another example is that the first focal length is 10mm to 30mm, and the second focal length is 28mm to 45mm, etc.

[0135] It should be noted that the composition of the motor 10 in the above embodiments is only illustrative. In other embodiments, the motor 10 may include fewer or more components. For example, in some embodiments, the motor 10 may not include the position detection component 5. In other embodiments, the motor 10 may also include a second drive component, which can be connected to the lens group 202 and the fixed base 1, for driving the lens group 202 to move relative to the fixed base 1 in a second direction X to achieve zoom and / or focus.

[0136] Please refer to Figures 2A to 3. Figure 3 is a schematic diagram of the structure of the motor 10 in some embodiments of the electronic device 1000 shown in Figure 2A.

[0137] In some embodiments, the fixed base 1 may be provided with a first set of locking holes 1121A and a second set of locking holes 1121B, which may be arranged in the second direction X. Each set of locking holes 1121 may correspond to a through hole 3004 on the cover plate 3001. A self-locking assembly 4 may be installed on the motion platform 2. The self-locking assembly 4 may include a telescopic member 41, which can extend and retract relative to the motion platform 2. When the telescopic member 41 extends, it can enter the locking hole 1121 to lock the motion platform 2 and the fixed base 1. When the telescopic member 41 retracts, it can disengage from the locking hole 1121 to unlock the motion platform 2 and the fixed base 1.

[0138] It should be noted that a set of locking holes 1121 can be set to correspond to a through hole 3004 on the cover plate 3001. This means that when the telescopic member 41 is inserted into a set of locking holes 1121, light can be incident on the optical element 201 through the through hole 3004 corresponding to the set of locking holes 1121 into which the telescopic member 41 is inserted, and then reflected by the optical element 201 to the image sensor 30.

[0139] In this embodiment, by inserting the telescopic member 41 into the locking hole 1121, a physical and mechanical stable self-locking can be achieved. That is, the self-locking component 4 can lock the moving platform 2 and the fixed base 1, thereby achieving the self-locking of the motor 10, which in turn stabilizes the lens 20 and improves the reliability of the lens 20 when the electronic device 1000 shakes or falls. For example, when the telescopic member 41 extends into the locking hole 1121 to lock the moving platform 2 and the fixed base 1, it can ensure the stability of the lens 20 when the electronic device 1000 is shaken by the user, and the stability of the lens 20 when the electronic device 1000 is dropped, such as when the electronic device 1000 is dropped from a height of 1 meter, 1.2 meters, 1.4 meters, or higher.

[0140] For example, along the second direction X, the distance between the first set of locking holes 1121A and the second set of locking holes 1121B is greater than or equal to 9000 μm.

[0141] In this embodiment, the motor 10 can drive the optical element 201 to move a long distance through the motion stage 2, providing sufficient layout space for lenses with different focal lengths, reducing or even avoiding structural layout interference between lenses, and facilitating the switching of different focal lengths.

[0142] In some embodiments, the first set of locking holes 1121A may include two locking holes 1121 facing each other. These two locking holes 1121 may be located on opposite sides of the self-locking assembly 4, i.e., on both sides of the fixed base 1. Correspondingly, the self-locking assembly 4 may have two telescopic members 41, so that when the moving platform 2 moves to the through hole 3004 corresponding to the first set of locking holes 1121A, the self-locking assembly 4 can extend into the two locking holes 1121 respectively through the two telescopic members 41, thereby locking both sides and improving the balance of the locking, thus enhancing the stability of the locking. Similarly, the second set of locking holes 1121B may adopt the same design.

[0143] In other embodiments, the first set of locking holes may include multiple locking holes 1121 located on the same side of the fixed base 1. Correspondingly, the self-locking component 4 may have multiple telescopic members 41, so that when the moving platform 2 moves to the through hole 3004 corresponding to the first set of locking holes 1121A, the self-locking component 4 can extend into two locking holes 1121 respectively through the multiple telescopic members 41 to achieve multiple locking, which is beneficial to improving the locking strength and thus improving the locking stability. Similarly, the second set of locking holes 1121B can adopt the same design.

[0144] In some other embodiments, the two methods described above can be combined to achieve multiple locking on both sides between the moving platform 2 and the fixed base 1.

[0145] In some embodiments, the position detection component 5 is used to detect the position of the moving platform 2 relative to the fixed base 1, thereby assisting in aligning the telescopic member 41 with the locking hole 1121. This improves the accuracy of the telescopic member 41 inserting into the locking hole 1121, reduces or even avoids accidental contact between the telescopic member 41 and the fixed base 1 when it extends, and thus helps to improve the service life of the motor 10.

[0146] It should be noted that, under normal conditions, the telescopic member 41 extends into the locking hole 1121 to lock the fixed base 1 and the moving stage 2. Only when it is necessary to change the position of the moving stage 2 will the self-locking component 4 control the telescopic member 41 to retract and disengage from the locking hole 1121, thereby unlocking the fixed base 1 and the moving stage 2. At this time, the drive component 3 can drive the moving stage 2 to move the optical element 201 along the second direction X. By means of the detection of the position detection component 5, the telescopic member 41 and the locking hole 1121 after the position is switched are aligned. After alignment, the self-locking component 4 controls the telescopic member 41 to extend and insert into the locking hole 1121, thereby locking the fixed base 1 and the moving stage 2 again.

[0147] Understandably, in some other embodiments, the locking hole 1121 may be provided on the motion platform 2, and correspondingly, the self-locking component 4 may be provided on the fixed base 1.

[0148] Please refer to Figures 2A, 4A, 4B and 5. Figure 4A is a schematic diagram of the structure of the motion platform 2 mounting part in the motor 10 shown in Figure 3 in some embodiments; Figure 4B is a schematic diagram of the structure of the fixed base 1 mounting part in the motor 10 shown in Figure 3 in some embodiments; Figure 5 is an exploded view of part of the structure of the motor 10 shown in Figure 3 in some embodiments.

[0149] In some embodiments, the motor 10 may further include a first circuit assembly 6, a self-locking detection assembly 7, and a second circuit assembly 8.

[0150] For example, the first circuit component 6 can be mounted on the fixed base 1, and the first circuit component 6 can be electrically connected to the device mounted on the fixed base 1 to supply power to the device mounted on the fixed base 1.

[0151] The self-locking detection component 7 may include a detection chip 71 and a sensing magnet 72. The detection chip 71 may be mounted on the fixed base 1, and the first circuit component 6 is electrically connected to the detection chip 71. The sensing magnet 72 may be mounted on the telescopic member 41. Specifically, the detection chip 71 may be mounted in or adjacent to the locking hole 1121. The detection chip 71 detects changes in the magnetic field of the sensing magnet 72 to detect the distance between the sensing magnet 72 and the detection chip 71, thereby determining the relative position of the telescopic member 41 and the locking hole 1121, and thus determining whether the telescopic member 41 has entered the locking hole 1121 or whether the telescopic member 41 has disengaged from the locking hole 1121.

[0152] The position detection component 5 may include a magnetic grating 51 and a tunnel magnetoresistive element 52. The magnetic grating 51 may be installed on the fixed base 1, and the first circuit component 6 is electrically connected to the magnetic grating 51. The tunnel magnetoresistive element 52 may be installed on the moving platform 2. By detecting the position of the tunnel magnetoresistive element 52 relative to the magnetic grating 51, the position of the moving platform 2 relative to the fixed base 1 can be detected, thereby assisting in the alignment of the telescopic component 41 and the locking hole 1121.

[0153] For example, the second circuit component 8 can be mounted on the motion stage 2, and the second circuit component can be electrically connected to the device mounted on the motion stage 2 to supply power to the device mounted on the motion stage 2.

[0154] The self-locking component 4 is installed on the motion platform 2. The second circuit component 8 can be electrically connected to the self-locking component 4 to provide power and control to the self-locking component 4, so as to control the extension and retraction of the telescopic component 41 in the self-locking component 4.

[0155] The driving component 3 may include a driving coil 31 and a driving magnet 32, which are positioned opposite each other. The driving coil 31 can be mounted on the motion platform 2. The second circuit component 8 can be electrically connected to the driving coil 31 to function as the driving coil 31. The driving magnet 32 ​​can be fixed to the fixed base 1. After the driving coil 31 is energized, the Lorentz force generated by the interaction between the driving coil 31 and the driving magnet 32 ​​can drive the driving coil 31 to move relative to the driving magnet 32. The driving coil 31 can be fixed to the second circuit component 8, so that the second circuit component 8, the self-locking component 4, and the motion platform 2 can move together under the drive of the driving coil 31.

[0156] In some other embodiments, the mounting positions of the detection chip 71 and the sensing magnet 72 can be interchanged, and the corresponding detection chip 71 can be electrically connected to the second circuit component 8, which supplies power to the detection chip 71.

[0157] In some other embodiments, the mounting positions of the magnetic grid 51 and the tunnel magnetoresistive element 52 can be interchanged, and the corresponding magnetic grid 51 can be electrically connected to the second circuit component 8, which supplies power to the magnetic grid 51.

[0158] Please refer to Figures 4A, 6, and 7. Figure 6 is a structural schematic diagram of the structure shown in Figure 4A from another perspective; Figure 7 is a partial structural decomposition schematic diagram of the structure shown in Figure 4A in some embodiments.

[0159] In some embodiments, the motion stage 2 may have a bearing surface 211 and a receiving space 212. The bearing surface 211 may be used to bear the optical element 201 described above. The receiving space 212 may be disposed on the back side of the bearing surface 211 for accommodating the self-locking assembly 4.

[0160] In this embodiment, by setting the self-locking component 4 and the optical element 201 on opposite sides of the bearing surface 211 of the motion stage 2, and by accommodating the self-locking component 4 through the accommodating space 212, the self-locking component 4 is accommodated and installed using the space of the motion stage 2 itself, which reduces the extra space occupied by the self-locking component 4, improves the space utilization of the motor 10, and is conducive to the miniaturization of the motor 10.

[0161] For example, the motion platform 2 may be provided with an opening 222, which can penetrate the motion platform 2 in a third direction Y and connects to the receiving space 212. The self-locking component 4 is installed in the receiving space 212, and the telescopic member 41 passes through the opening 222.

[0162] In this embodiment, by providing an opening 222, the telescopic member 41 of the self-locking component 4 can extend from the receiving space 212 to the outside of the moving platform 2, thereby realizing its telescopic function and realizing the locking and unlocking functions described above.

[0163] For example, the motion stage 2 may be provided with a clearance hole 214, which may be located on the back side of the bearing surface 211 and communicate with the receiving space 212. The clearance hole 214 may be located at the bottom of the stage 21. The second circuit assembly 8 may include a third circuit board 81 and a fourth circuit board 82, which may be bent and connected to form an L-shaped structure. The third circuit board 81 can seal the receiving space 212 of the motion stage 2, and the fourth circuit board 82 is fixedly connected to the bottom of the motion stage 2. The drive member 42 may have a pin 424, which may extend through the clearance hole 214 and be electrically connected to the fourth circuit board 82.

[0164] In this embodiment, by providing a clearance hole 214 on the motion platform 2, the path of the external circuit of the pin 424 of the drive component 42 is shortened, so that the fourth circuit board 82 can be electrically connected to the pin 424 of the drive component 42 to provide power and control to the drive component 42. The second circuit assembly 8 has an L-shaped structure to enclose part of the motion platform 2, which helps to reduce the space occupied by the second circuit assembly 8, thereby facilitating the miniaturization of the motor 10 and improving the connection stability between the second circuit assembly 8 and the motion platform 2.

[0165] The drive coil 31 is mounted on the side of the fourth circuit board 82 facing away from the motion platform 2, so that the fourth circuit board 82 can provide power and control to the drive coil 31.

[0166] In some embodiments, the sensing magnet 72 can be mounted on the telescopic member 41 to cooperate with the detection chip 71 mentioned above (see Figure 3) to detect the position of the telescopic member 41 relative to the locking hole 1121, which helps to achieve accurate locking and unlocking.

[0167] In some embodiments, the side of the motion stage 2 may have a receiving groove 223, and the tunnel magnetoresistive device 52 can be installed in the receiving groove 223 so that the motion stage 2 can drive the tunnel magnetoresistive device 52 to move along the second direction X, thereby changing the position of the tunnel magnetoresistive device 52 relative to the magnetic grating 51, and realizing the position detection of the motion stage 2. In addition, the receiving groove 223 can provide installation space and protection for the tunnel magnetoresistive device 52, and avoid the tunnel magnetoresistive device 52 occupying additional space, which is beneficial to avoid the tunnel magnetoresistive device 52 interfering with the movement of the motion stage 2.

[0168] Please refer to Figures 6, 8A, and 8B. Figure 8A is a structural schematic diagram of the self-locking component 4 in some embodiments of the structure shown in Figure 7; Figure 8B is a partial structural exploded schematic diagram of the self-locking component 4 shown in Figure 8A in some embodiments.

[0169] In some embodiments, the self-locking assembly 4 may further include a drive member 42 and a drive shaft 43. The drive member 42 may have an output shaft 421, and a first end 431 of the drive shaft 43 may be connected to the output shaft 421. A second end 432 of the drive shaft 43 may be connected to the telescopic member 41. The drive member 42 can rotate the drive shaft 43 by rotating the output shaft 421, thereby causing the telescopic member 41 to rotate, so that the telescopic member 41 can move away from or closer to the drive member 42.

[0170] In this embodiment, the transmission shaft 43 serves to connect the output shaft 421 and the telescopic member 41. Since the output shaft 421 is the structure of the drive member 42, the output of the drive member 42 may be limited by the shape of the output shaft 421. By designing the shape of the transmission shaft 43, the transmission connection of the drive member 42 can be changed so that the drive member 42 can better match the telescopic member 41.

[0171] For example, the telescopic member 41 may include a screw 411 and a nut 412, the screw 411 being connected to the second end 432 of the drive shaft 43. The screw 411 may pass through the nut 412 and be threadedly connected to the nut 412.

[0172] In this embodiment, the drive member 42 can rotate via the output shaft 421 to drive the transmission shaft 43 to rotate. The rotation of the transmission shaft 43 can drive the screw 411 to rotate relative to the nut 412. Under the drive of the transmission shaft 43, the screw 411 can move relative to the nut 412 in the third direction Y to achieve extension and retraction. Since the screw 411 and the nut 412 in the telescopic member 41 are connected by a nut, the telescopic member 41 can remain stably in any position after the drive member 42 stops driving, that is, to achieve power-off locking of the self-locking component 4, which is beneficial to energy saving. Since power-off locking does not require external force, when the drive member 42 is energized, there is no need to overcome external forces other than the friction between the screw 411 and the nut 412, which reduces the driving force required to drive the screw 411 to move relative to the nut 412, which is beneficial to energy saving.

[0173] Furthermore, since the drive component 42 drives the screw 411 by rotating the output, and the screw 411 cooperates with the nut 412 to convert rotation into linear motion, when the self-locking component 4 is in a power-off locked state, breaking the lock of the self-locking component 4 requires applying a corresponding rotational force to the screw 411. This makes the locked state of the self-locking component 4 difficult to break, thus improving the stability of the self-locking component 4 when it is in a power-off locked state.

[0174] The telescopic member 41 can extend through the opening 222 of the motion stage 2. The telescopic member 41 can have the mounting port 4113 described above. The mounting port 4113 is exposed on the motion stage 2 so that the sensing magnet 72 can be exposed, thereby facilitating the detection of the sensing magnet 72.

[0175] In some embodiments, the drive member 42 may have two output shafts 421, which may be arranged opposite to each other along a third direction Y. The self-locking component 4 may include two telescopic members 41, each telescopic member 41 being connected to a drive shaft 43. The two telescopic members 41 can move simultaneously under the drive of the drive member 42, and the two telescopic members 41 can move opposite to each other or move towards each other simultaneously.

[0176] In this embodiment, since the driving member 42 can realize the synchronous movement of the two screws 411 on both sides, the sensing magnet 72 can be set on one of the screws 411 to achieve its function.

[0177] For example, two output shafts 421 extend from inside the housing 422 and pass through the end plate 423 to be exposed. The two output shafts 421 can be two independent shafts, or the two output shafts 421 can be a single shaft, with two portions of the single shaft exposed at opposite ends of the housing 422 forming two output shafts 421.

[0178] In this embodiment, by setting two output shafts 421, the dual-side drive of the drive member 42 can be realized, so as to simultaneously drive the two transmission shafts 43 located on both sides of the drive member 42 to rotate, thereby driving the two telescopic members 41 to move, so as to realize that the two screws 411 move in opposite directions or in opposite directions at the same time, which can realize simultaneous locking and unlocking of both sides of the self-locking component, which is beneficial to improving the smoothness of locking and unlocking.

[0179] Among them, the driving component 42 can be a stepper motor, which is beneficial to the rotation control of the output shaft 421 of the driving component 42, so as to achieve stable rotation of the output shaft 421, and also to drive the consistent feed amount of the screws 411 on both sides.

[0180] It should be noted that the sensing magnet 72 can be installed on one screw 411 or two screws 411, and there is no limitation here.

[0181] The number of drive shafts 43 can also be two, with one drive shaft 43 connected between an output shaft 421 and a telescopic member 41.

[0182] In some embodiments, the drive shaft 43 and the output shaft 421 can be an integral structure to shorten the transmission chain of the self-locking assembly 4, which helps to simplify the transmission relationship, reduce transmission errors, and thus help to make the motion feed on both sides of the drive member 42 tend to be consistent.

[0183] Please refer to Figures 9A, 9B and 10A. Figure 9A is a structural schematic diagram of the moving platform 2 in some embodiments of the structure shown in Figure 7; Figure 9B is a structural schematic diagram of the moving platform 2 shown in Figure 9A from another perspective; Figure 10A is a structural schematic diagram of the self-locking component 4 shown in Figure 8A installed on the moving platform 2 shown in Figure 9A in some embodiments.

[0184] In some embodiments, the motion stage 2 may include a stage 21 and two support members 22, which are respectively connected to opposite sides of the stage 21. The stage 21 may have a bearing surface 211, which is inclined relative to the second direction X, and the bearing surface 211 may be used to support the optical element 201 described above. The support member 22 may have a second guide groove 221, which may be disposed at the bottom of the support member 22.

[0185] For example, the platform 21 may also have the aforementioned receiving space 212 for accommodating the self-locking component 4, thereby improving the space utilization of the motor 10. The platform 21 may be provided with a limiting hole 213 and a clearance hole 214, both located on the back side of the bearing surface 211 and connected to the receiving space 212. The limiting hole 213 is located at the top of the platform 21, and the clearance hole 214 may be located at the bottom of the platform 21. The inner wall of the receiving space 212 may include a mounting wall 215, which may have an arc-shaped structure.

[0186] For example, the drive unit 42 may also include a housing 422, an end plate 423, and pins 424. The housing 422 may be mounted on the mounting wall 215, and the pins 424 are connected to the housing 422.

[0187] The mounting wall 215 within the receiving space 212 can be designed to mimic the outer surface of the drive component 42, allowing the drive component 42 to be mounted on the mounting wall 215 to improve the stability of the drive component 42.

[0188] The drive component 42 can be fixedly installed on the mounting wall 215 by means of adhesive bonding, soldering, etc., so as to improve the stability of the drive component 42.

[0189] The end plate 423 of the drive component 42 can be installed in the limiting hole 213. By limiting the position through the locking of the limiting hole 213, the assembly stability between the drive component 42 and the motion platform 2 can be improved, thereby further reinforcing the installation of the drive component 42.

[0190] The end plate 423 of the drive component 42 can be bonded or welded to the inner wall of the limiting hole 213 to reinforce the installation of the drive component 42.

[0191] Alternatively, a reinforcing plate 216 can be installed at the limiting hole 213 to limit the end plate 423, thereby further reinforcing the installation of the drive component 42.

[0192] The pin 424 of the drive element 42 can extend out of the moving platform 2 through the clearance hole 214 for connecting to external circuitry to receive current and control signals, thereby controlling the output shaft 421. For example, the rotation direction, speed, and stop rotation of the output shaft 421.

[0193] The number of end plates 423 and output shafts 421 can both be two. The two end plates 423 can be set at opposite ends of the body 422. The number of pins 424 can be multiple, and the pins 424 can be located between the two end plates 423.

[0194] For example, the support member 22 may be provided with the opening 222 described above, the opening 222 may penetrate the support member 22 in a third direction Y, and the opening 222 connects to the receiving space 212 so that the telescopic member 41 can extend out.

[0195] Both support members 22 may be provided with openings 222, and the two openings 222 are coaxially arranged.

[0196] For example, one support member 22 may have a receiving groove 223 as described above, the opening of which may face away from the other support member 22 for mounting the tunnel magnetoresistive 52.

[0197] Please refer to Figures 10A to 11. Figure 10B is a schematic diagram of the structure shown in Figure 10A after being cut along line EE in some embodiments; Figure 11 is a schematic diagram of the structure shown in Figure 10A after being cut along line FF in some embodiments.

[0198] In some embodiments, the nut 412 can be installed on the motion platform 2. Specifically, the nut 412 can be fixedly installed in the opening 222, and the screw 411 passes through the nut 412 to pass through the opening 222. When the nut 412 can be fixedly installed on the motion platform 2, the drive member 42 can drive the transmission shaft 43 to rotate through the output shaft 421. The rotation of the transmission shaft 43 drives the screw 411 to rotate relative to the nut 412. Since the nut 412 cannot move, the screw 411 can move relative to the nut 412 in the third direction Y while rotating relative to the nut 412, so as to extend or retract relative to the motion platform 2.

[0199] Please refer to Figures 12, 13, and 14. Figure 12 is a structural schematic diagram of the self-locking assembly 4 shown in Figure 8A after being cut open along line DD in some embodiments; Figure 13 is a structural schematic diagram of the transmission shaft 43 in the self-locking assembly 4 shown in Figure 8A in some embodiments; and Figure 14 is a structural schematic diagram of the screw 411 in the self-locking assembly 4 shown in Figure 8A in some embodiments.

[0200] In some embodiments, the drive shaft 43 may include a connected first portion 43a and a second portion 43b. The first portion 43a of the drive shaft 43 may include a first end 431 of the drive shaft 43, and the second portion 43b of the drive shaft 43 may include a second end 432 of the drive shaft 43. It should be noted that the dashed line in Figure 13 is a schematic diagram of the division between the first portion 43a and the second portion 43b of the drive shaft 43. It can be understood that in other embodiments, the division between the first portion 43a and the second portion 43b of the drive shaft 43 may be located at other locations.

[0201] For example, the thickness of the first part 43a of the drive shaft 43 can be greater than the thickness of the second part 43b of the drive shaft 43. The first part 43a of the drive shaft 43 is used to improve the structural strength of the drive shaft 43, and the second part 43b of the drive shaft 43 is used to achieve miniaturization, which is beneficial to saving space and to the connection between the drive shaft 43 and the screw 411.

[0202] For example, the second part 43b of the drive shaft 43 may have a drive surface 433, and the second part 43b of the drive shaft 43 may extend into the screw 411 so that the screw 411 can be driven to rotate with the rotation of the drive shaft 43 by means of the drive surface 433.

[0203] The drive shaft 43 may have a connecting hole 434 for accommodating the output shaft 421. The connecting hole 434 may penetrate the first portion 43a of the drive shaft 43 in a third direction Y, and the connecting hole 434 may extend to the first portion 43a of the drive shaft 43 and penetrate the drive surface 433. Specifically, the output shaft 421 may be cylindrical, and the connecting hole 434 at the first portion 43a of the drive shaft 43 is a circular hole, so that the output shaft 421 can be fitted with the connecting hole 434 and inserted into the first portion 43a of the drive shaft 43. The connecting hole 434 at the second portion 43b of the drive shaft 43 is a through hole, and it penetrates squarely along the thickness of the second portion 43b of the drive shaft 43, so that the output shaft 421 is partially exposed after being inserted into the second portion 43a of the drive shaft 43.

[0204] In this embodiment, the second part 43b of the drive shaft 43 has a thicker dimension to facilitate the setting of the connecting hole 434, which is beneficial for connecting the output shaft 421. The connecting hole 434 penetrates the drive surface 433, so that the thinner second part 43b of the drive shaft 43 can be connected to the output shaft 421 with a larger outer diameter, which is beneficial for the miniaturization design of the drive shaft 43.

[0205] For ease of description, the two drive shafts 43 can be referred to as the first drive shaft 435 (see Figure 13(a)) and the second drive shaft 436 (see Figure 13(b)).

[0206] In some embodiments, the transmission surface 433 of the first transmission shaft 435 and the transmission surface 433 of the second transmission shaft 436 can be parallel, so that the rotation of the first transmission shaft 435 and the rotation of the second transmission shaft 436 can be synchronized, which is beneficial to the consistency of the feed amount of the two screws 411 on both sides of the drive member 42.

[0207] For example, the first drive shaft 435 and the second drive shaft 436 can be fixedly connected to the output shaft 421 after being positioned by a fixture. The fixture positioning ensures that the transmission surface 433 of the first drive shaft 435 is parallel to the transmission surface 433 of the second drive shaft 436. The fixed connection ensures that both the first drive shaft 435 and the second drive shaft 436 can be stably connected to the output shaft 421 during the operation of the self-locking assembly 4, thus preventing deviation of the first drive shaft 435 and / or the second drive shaft 436. The connection method between the drive shaft 435 and the output shaft 421 can be welding, bonding, or other methods.

[0208] Please refer to Figures 12, 13, and 14. In some embodiments, the transmission surface 433 can abut against the side wall of the transmission groove 4111 under the rotation of the transmission shaft 43, thereby driving the screw 411 to rotate. There may be an assembly gap 44 between the transmission surface 433 and the side wall of the transmission groove 4111 to achieve assembly tolerance, thereby preventing jamming during the process of the transmission shaft 43 driving the screw 411 to rotate relative to the nut 412.

[0209] For example, the telescopic member 41 may also include an elastic member (not shown in the figure). The elastic member can fill the assembly gap 44 so that the transmission surface 433 can squeeze the elastic member under the rotation of the transmission shaft 43. The elastic member can deform so that the transmission surface 433 can move relative to the transmission shaft 43 by squeezing the elastic member, thereby playing a tolerance role. It can be regarded as providing a transmission margin space between the transmission shaft 43 and the screw 411, thereby avoiding jamming during the process of the transmission shaft 43 driving the screw 411 to rotate relative to the nut 412.

[0210] Wherein, the dimension D1 of the assembly gap 44 satisfies: 0 < D1 ≤ 0.2 mm. For example, the value of D1 can be, but is not limited to, 0, or 0.02 mm, or 0.04 mm, or 0.06 mm, or 0.08 mm, or 0.1 mm, or 0.12 mm, or 0.14 mm, or 0.16 mm, or 0.18 mm, or 0.2 mm, or other values ​​between 0 and 0.2 mm.

[0211] In this embodiment, the size D1 of the assembly gap 44 satisfies the above-mentioned relationship, which is beneficial to forming an assembly tolerance, avoiding jamming during the process of the drive shaft 43 driving the screw 411 to rotate relative to the nut 412, and avoiding excessive gap, which would cause lag in the transmission between the drive shaft 43 and the screw 411.

[0212] In some embodiments, the second end 432 of the drive shaft 43 may have multiple drive surfaces 433. The second end 432 of the drive shaft 43 may have the same shape as the drive shaft 43. Each drive surface 433 is provided corresponding to a side wall of the drive groove 4111. There is an assembly gap 44 between the side walls of the drive groove 4111 provided corresponding to each drive surface 433.

[0213] In this embodiment, the arrangement of multiple transmission surfaces 433 enables the transmission shaft 43 to drive the screw 411 to rotate in multiple directions, which helps to improve the stability of the transmission.

[0214] For example, the cross-sectional shape of the second end 432 of the drive shaft 43 in the plane perpendicular to the third direction Y can be, but is not limited to, a straight line, a cross, a regular polygon, etc. Correspondingly, the shape of the drive groove 4111 is adapted to the shape of the second end 432 of the drive shaft 43.

[0215] Among them, the number of transmission surfaces 433 of the transmission shafts 43 in the two telescopic members 41 is the same, and the transmission surfaces 433 of the two transmission shafts 43 are arranged in a one-to-one correspondence, and the transmission surfaces 433 arranged in parallel between the two transmission shafts 43 are arranged in parallel. This helps to ensure that the transmission pace on both sides of the drive member 42 is consistent, thereby ensuring that the feed amount of the two screws 411 tends to be consistent.

[0216] In some embodiments, the second end 432 of the drive shaft 43 may be elastic, and the second end 432 of the drive shaft 43 may be located in the drive groove 4111 and abut against the side wall of the drive groove 4111.

[0217] In this embodiment, since the second end 432 of the transmission shaft 43 is elastic, there is no need to set a gap between the second end 432 of the transmission shaft 43 and the side wall of the transmission groove 4111. The tolerance function can be achieved by the elastic deformation of the second end 432 of the transmission shaft 43, thus avoiding jamming during the process of the transmission shaft 43 driving the screw 411 to rotate relative to the nut 412.

[0218] Please refer to Figures 12, 13, and 14. In some embodiments, the screw 411 may include a connected first portion 411a and a second portion 411b. The first portion 411a of the screw 411 may have a transmission groove 4111, and the second end 432 of the transmission shaft 43 may be located within the transmission groove 4111. The outer peripheral side of the first portion 411a of the screw 411 may have an external thread 4112. The external thread 4112 may have a first thread start point 4112a. In a plane perpendicular to the third direction Y and passing through the first thread start point 4112a, the first thread start point 4112a is connected to the center of the screw 411 to form a first connecting line, and the first connecting line may have a first included angle with the axis of the screw 411.

[0219] For ease of description, the two screws 411 can be referred to as the first screw 4114 (see (a) in Figure 14) and the second screw 4115 (see (b) in Figure 14).

[0220] In some embodiments, the external thread 4112 of the first screw 4114 and the external thread 4112 of the second screw 4115 have the same pitch and opposite thread directions, so that the first screw 4114 and the second screw 4115 can move in opposite directions or in opposite directions simultaneously under the drive of the drive member 42.

[0221] In the first screw 4114, the first connecting line is M1, the axis of screw 411 is L1 passing through O1, and the first included angle is the angle α1 between the first connecting line M1 and the axis L1. In the second screw 4115, the first connecting line is M2, the axis of screw 411 is L2 passing through O2, and the first included angle is the angle α2 between the first connecting line M2 and the axis L2. The absolute value of the difference between included angles α1 and α2 is less than or equal to 2°. For example, the value of |α1-α2| can be, but is not limited to, 2°, 1.7°, 1.4°, 1.1°, 0.8°, 0.5°, 0.4°, 0.3°, 0.2°, 0.1°, 0, or other values ​​less than 2°.

[0222] In this embodiment, by designing |α1-α2| to be less than or equal to 2°, it is beneficial to ensure that the feed amount of the screws 411 on both sides of the driving member 42 tends to be consistent under the drive of the driving member 42.

[0223] It should be noted that the above-described method of providing the deviation angle between the thread starting points of the first screw 4114 and the second screw 4115 is only for illustration. Understandably, the included angle between other connecting lines can also be used for comparison, as long as the reference objects of the thread starting points of the first screw 4114 and the second screw 4115 are consistent. When the reference objects are consistent, the deviation angle should be less than or equal to 2°.

[0224] Please refer to Figures 11, 12, 15A, and 15B. Figure 15A is a structural schematic diagram of the nut 412 in the self-locking assembly 4 shown in Figure 8A in some embodiments; Figure 15B is a structural schematic diagram of the nut 412 in Figure 15A after being cut along the cross-sectional line in some embodiments. It should be noted that (a) in Figure 15B is a structural schematic diagram of the nut 412 shown in Figure 15A (a) after being cut along line BB in some embodiments, and (b) in Figure 15B is a structural schematic diagram of the nut 412 shown in Figure 15A (b) after being cut along line CC in some embodiments.

[0225] In some embodiments, the nut 412 may have a threaded hole 4121 with an internal thread 4122, so that the external thread 4112 of the screw 411 can be threadedly connected to the internal thread 4122 of the nut 412, thereby allowing the screw 411 to move relative to the nut 412 in a third direction Y by threading with the nut 412.

[0226] The nut 412 has a limiting groove 4123 on its outer periphery. There can be two limiting grooves 4123, which can be arranged opposite each other, and the inner wall of the limiting groove 4123 can form an L-shaped limiting surface 4124. This allows the limiting groove 4123 to engage with the inner wall of the opening 222. Because the nut 412 is limited by the inner wall of the opening 222, the drive member 42, through the rotation of the output shaft 421, can drive the transmission shaft 43 to rotate. The rotation of the transmission shaft 43 drives the screw 411 to rotate relative to the nut 412. Since the nut 412 is limited by the inner wall of the opening 222 and cannot move, the screw 411 can rotate relative to the nut 412 while simultaneously moving relative to the nut 412 along a third direction Y, thereby extending or retracting relative to the moving platform 2.

[0227] The internal thread 4122 has a second thread start point 4122a. In a plane perpendicular to the third direction Y and passing through the second thread start point 4122a, the second thread start point 4122a is connected to the center of the nut 412 to form a second line. The second line can have a second included angle with the axis of the nut 412.

[0228] For ease of description, the two nuts 412 can be referred to as the first nut 4125 (see (a) in Figure 15B) and the second nut 4126 (see (b) in Figure 15B).

[0229] In some embodiments, the internal thread 4122 of the first nut 4125 and the internal thread 4122 of the second nut 4126 have the same pitch and opposite thread directions, so that the first screw 4114 and the second screw 4115 can move in opposite directions or in opposite directions simultaneously under the drive of the drive member 42.

[0230] In the first nut 4125, the second connecting line is M3, the axis of nut 412 is L3 passing through O3, and the second included angle is the angle α3 between the second connecting line M3 and the axis L3. In the second nut 4126, the second connecting line is M4, the axis of nut 412 is L4 passing through O4, and the second included angle is the angle α4 between the second connecting line M4 and the axis L4. The absolute value of the difference between included angle α3 and included angle α4 is less than or equal to 2°. For example, the value of |α3-α4| can be, but is not limited to, 2°, 1.7°, 1.4°, 1.1°, 0.8°, 0.5°, 0.4°, 0.3°, 0.2°, 0.1°, 0, or other values ​​less than 2°.

[0231] In this embodiment, by designing |α3-α4| to be less than or equal to 2°, it is beneficial to ensure that the feed amount of the screws 411 on both sides of the driving member 42 tends to be consistent under the drive of the driving member 42.

[0232] It should be noted that the above-described method of providing the deviation angle between the thread starting points of the first nut 4125 and the second nut 4126 is only for illustration. Understandably, the included angle between other connecting lines can also be used for comparison, as long as the reference objects of the thread starting points of the first nut 4125 and the second nut 4126 are consistent. When the reference objects are consistent, the deviation angle should be less than or equal to 2°.

[0233] Please refer to Figures 4B, 16 to 18. Figure 16 is a partial exploded view of the structure shown in Figure 4B in some embodiments; Figure 17A is a structural schematic diagram of the fixed base 1 in the structure shown in Figure 16 in some embodiments; Figure 17B is a structural schematic diagram of the fixed base 1 shown in Figure 17A from another perspective; and Figure 18 is a partial exploded view of the fixed base 1 shown in Figure 17A in some embodiments.

[0234] In some embodiments, the fixed base 1 may include a base body 11 and a guide member 12. The base body 11 may have a first guide groove 1111, and the guide member 12 may be installed in the first guide groove 1111. The first guide groove 1111 provides installation space and support for the guide member 12. The number of guide members 12 may be two, which is beneficial for achieving balanced guidance. In other embodiments, the number of guide members 12 may be different. It should be noted that the number of first guide grooves 1111 and the number of guide members 12 may be the same, and one guide member 12 is installed in one first guide groove 1111.

[0235] For example, the seat 11 may include a bottom wall 111, a first side wall 112, and a second side wall 113. The first side wall 112 and the second side wall 113 may be arranged opposite each other along a third direction Y and are respectively connected to opposite sides of the bottom wall 111. The first side wall 112, the bottom wall 111, and the second side wall 113 enclose a receiving space 114.

[0236] The first guide groove 1111 can be set on the bottom wall 111.

[0237] The first sidewall 112 may be provided with multiple locking holes 1121 and mounting slots 1122 for mounting the magnetic grating 51.

[0238] The second sidewall 113 may be provided with multiple sets of locking holes 1121. The number of locking holes 1121 on the second sidewall 113 and the number of locking holes 1121 on the first sidewall 112 may be the same, and they are arranged facing each other.

[0239] The locking holes 1121 located on the first sidewall 112 and the locking holes 1121 located on the second sidewall 113 can be arranged one-to-one. It should be noted that one-to-one correspondence means that the orthographic projection of the locking hole 1121 located on the first sidewall 112 onto the second sidewall 113 can at least partially coincide with a corresponding locking hole 1121 located on the second sidewall 113.

[0240] The locking hole 1121 located on the first side wall 112 and the locking hole 1121 located on the second side wall 113 may have the same or different shapes. The shape of the locking hole 1121 may be, but is not limited to, circular, square, triangular, rhomboid, etc.

[0241] When the locking hole 1121 is circular, since the screw 411 is cylindrical, there is more contact surface between the inner wall of the locking hole 1121 and the screw 411, which is more conducive to reducing the force on the screw.

[0242] When the locking hole 1121 is square, it can provide installation space to facilitate the installation of components through the locking hole 1121. For example, when a cylindrical screwdriver is used to install the screw 411 through the locking hole 1121, the square locking hole 1121 can provide slack space for the screwdriver, making it convenient for the screwdriver to rotate.

[0243] In some embodiments, the first circuit component 6, the detection chip 71, the magnetic grating 51, and the driving magnet 32 ​​can all be mounted on the fixed base 1.

[0244] For example, the first circuit assembly 6 may include a first circuit board 61 and a second circuit board 62. The first circuit board 61 may be mounted between the first sidewall 112 and the second sidewall 113. The second circuit board 62 may be located within the accommodating space 114 and mounted on the bottom wall 111. The first circuit board 61 and the second circuit board 62 may be electrically connected.

[0245] The second circuit board 62 can be designed to conform to the shape of the fixed base 1, allowing it to fit more closely. For example, the second circuit board 62 may include a main body and a bent portion. The main body can be mounted on the bottom wall 111, and the bent portion can be mounted on the first side wall 112 and / or the second side wall 113 to improve the connection strength between the second circuit board 62 and the fixed base 1. Furthermore, mounting the bent portion on the first side wall 112 can shorten the electrical connection distance between the second circuit board 62 and the magnetic grating 51 and the detection chip 71, facilitating their electrical connection to the second circuit board 62. In other embodiments, the second circuit board 62 can be connected to the fixed base 1 to form at least a portion of the bottom wall 111 of the fixed base 1.

[0246] The second circuit board 62 can be a rigid circuit board, and the second circuit board 62 can be at least partially embedded in the fixed base 1 to improve the structural strength of the fixed base 1.

[0247] For example, the detection chip 71 can be located inside the locking hole 1121 and mounted on the first sidewall 112. The detection chip 71 can be electrically connected to the second circuit board 62 to transmit signals through the second circuit board 62.

[0248] For example, the magnetic grid 51 can be located within the mounting groove 1122 and mounted on the first sidewall 112. The magnetic grid 51 can be electrically connected to the second circuit board 62 to transmit signals via the second circuit board 62.

[0249] The magnetic grating 51 can be extended along the second direction X.

[0250] For example, the drive magnet 32 ​​may be located in the accommodating space 114 and mounted on the second circuit board 62.

[0251] The driving magnet 32 ​​can be located between the two guide members 12.

[0252] Please refer to Figures 3, 19A, 19B and 20. Figure 19A is a structural schematic diagram of the motor 10 shown in Figure 3 after being cut along line GG in some embodiments; Figure 19B is a structural schematic diagram of the motor 10 shown in Figure 3 after being cut along line HH in some embodiments when the motor 10 is in the locked state; Figure 20 is a structural schematic diagram of the motor 10 shown in Figure 3 after being cut along line HH in some embodiments when the motor 10 is in the unlocked state.

[0253] In some embodiments, the first guide groove 1111 of the fixed base 1 and the second guide groove 221 of the moving platform 2 cooperate to form a wrap around the guide member 12, thereby realizing a sliding fit between the moving platform 2 and the fixed base 1, which is beneficial to improving the stability of the sliding of the moving platform 2 relative to the fixed base 1.

[0254] In some embodiments, the magnetic grating 51 can be mounted on the fixed base 1, and the tunnel magnetoresistive device 52 can be mounted on the moving platform 2, with the tunnel magnetoresistive device 52 and the magnetic grating 51 at least partially facing each other.

[0255] In some embodiments, the motor 10 is typically in a locked state, i.e., one end of each screw 411 is located in one of the multiple locking holes 1121. In this case, the moving platform 2 cannot move relative to the fixed base 1, thus maintaining overall stability.

[0256] When the position of the motion platform 2 needs to be changed, the drive unit 42 can rotate via the output shaft 421 to retract the screw 411 in the telescopic member 41 relative to the motion platform 2, thereby disengaging from the locking hole 1121 and unlocking the motion platform 2 from the fixed base 1. For example, the drive unit 42 can rotate via the output shaft 421 to change the motor 10 from the locked state in FIG. 19B to the unlocked state in FIG. 20, thereby unlocking the motor 10. At this time, the drive assembly 3 can drive the motion platform 2 to move relative to the fixed base 1 along the guide member 12. For example, it can move from the position shown in FIG. 2A to the position shown in FIG. 2B.

[0257] During this process, the position detection component 5 can detect the position of the moving stage 2 relative to the fixed base 1 by detecting the position of the tunnel magnetoresistive 52 relative to the magnetic grating 51, thereby achieving alignment detection of the screw 411 and the locking hole 1121. After aligning the screw 411 and the locking hole 1121, the drive component 42 can rotate in the opposite direction through the output shaft 421 to drive the screw 411 in the telescopic component 41 to extend and insert into the locking hole 1121, thereby locking the moving stage 2 and the fixed base 1.

[0258] It should be noted that during the movement of the moving platform 2 relative to the fixed base 1, the tunnel magnetoresistive element 52 remains within the detectable range of the magnetic grating 51, so that the magnetic grating 51 can maintain its sensing of the tunnel magnetoresistive element 52. This allows the position of the moving platform 2 relative to the fixed base 1 to be detected by the position of the tunnel magnetoresistive element 52 relative to the magnetic grating 51, thereby achieving alignment between the screw 411 and the locking hole 1121. For example, the tunnel magnetoresistive element 52 and the magnetic grating 51 are always at least partially aligned.

[0259] In some embodiments, both the first set of locking holes 1121A and the second set of locking holes 1121B may include two locking holes 1121 facing each other along a third direction Y, and the two locking holes 1121 facing each other are located on opposite sides of the self-locking assembly 4. Under the drive of the driving member 42, the screws 411 in the two telescopic members 41 can simultaneously extend into the two locking holes 1121 facing each other, or simultaneously disengage from the two locking holes 1121 facing each other.

[0260] In this embodiment, due to the arrangement of the transmission shaft 43, screw 411, and nut 412 on both sides of the drive member 42 in the self-locking assembly 4, the screws 411 on both sides of the drive member 42 can move synchronously and in opposite directions, thereby achieving stable locking or unlocking, and the locking and unlocking on both sides can be achieved simultaneously. Locking via two screws 411 on both sides helps improve the stability of the motor 10's self-locking and increases structural strength.

[0261] In other words, the machining and assembly phases of the drive shaft 43, screw 411, and nut 412 are designed to ensure consistent feed rates on both sides of the drive component 42. Specifically, the transmission surface 433 of the first drive shaft 435 and the transmission surface 433 of the second drive shaft 436 can be parallel (refer to Figure 13) so that the rotation of the first drive shaft 435 and the rotation of the second drive shaft 436 can be synchronized, which is beneficial for ensuring consistent feed rates of the two screws 411 on both sides of the drive component 42. The external threads 4112 of the first screw 4114 and the external threads 4112 of the second screw 4115 have the same pitch and opposite thread directions. The absolute value of the difference between the included angles α1 and α2 is less than or equal to 2° (refer to Figure 14). This allows the first screw 4114 and the second screw 4115 to move in opposite directions or towards each other simultaneously under the drive of the drive member 42. It also helps to ensure that the feed amount of the screws 411 on both sides of the drive member 42 tends to be consistent under the drive of the drive member 42. The internal threads 4122 of the first nut 4125 and the internal threads 4122 of the second nut 4126 have the same pitch and opposite directions, so that the first screw 4114 and the second screw 4115 can move in opposite directions or towards each other simultaneously under the drive of the drive member 42. The absolute value of the difference between the included angle α3 and the included angle α4 is less than or equal to 2° (please refer to Figures 15A and 15B). This ensures that the first screw 4114 and the second screw 4115 can move in opposite directions or towards each other simultaneously under the drive of the drive member 42, and also helps to ensure that the feed amount of the screws 411 on both sides of the drive member 42 tends to be consistent under the drive of the drive member 42.

[0262] In this embodiment, since the sensing magnet 72 is installed inside the mounting port 4113 of the screw 411 and the detection chip 71 is installed inside the locking hole 1121, the detection chip 71 can detect the position of the sensing magnet 72 relative to the detection chip 71 when the screw 411 moves relative to the locking hole 1121. This allows for accurate detection of the relative position of the screw 411 to the locking hole 1121, determining whether the screw 411 has entered the locking hole 1121 to lock or whether it has disengaged from the locking hole 1121 to unlock, thus improving the accuracy of locking and unlocking the motor 10. Furthermore, the arrangement of the sensing magnet 72 and the detection chip 71 allows for the determination of the screw 411's stroke, preventing excessive stroke that could cause the threads to seize up.

[0263] In this embodiment, since the screw 411 and nut 412 in the telescopic member 41 are connected by a threaded engagement, the screw 411 can stably stay at any engagement position of the nut 412, thereby enabling the self-locking component 4 to achieve a power-off self-locking function. Specifically, when the drive member 42 drives the screw 411 in the telescopic member 41 to extend and insert into the locking hole 1121, the drive member 42 does not need to continue working. The screw 411 can remain stationary through the threaded engagement with the nut 412, thereby achieving the goal of keeping the screw 411 inserted into the locking hole 1121 and achieving power-off self-locking. Since the screw 411 is inserted into the locking hole 1121 to lock the moving platform 2 and the fixed base 1, which is the state that the motor 10 needs to maintain for a long time, the motor 10 provided in this embodiment can achieve an effective energy-saving effect through power-off self-locking. Similarly, in the unlocked state, the motor 10 can also achieve the power-off unlocking function. That is, when the screw 411 is disengaged from the locking hole 1121, the drive component 42 does not need to continue working. The screw 411 can remain stationary through the threaded connection with the nut 412, thereby keeping the screw 411 disengaged from the locking hole 1121, which can also play an energy-saving role.

[0264] The detection chip 71 can also detect the length of the screw 411 extending into the locking hole 1121, which is beneficial for achieving stable locking.

[0265] When the moving platform 2 is locked to the fixed base 1, the length of the screw 411 extending into the locking hole 1121 is greater than or equal to 0.5 mm to improve the stability of the lock between the moving platform 2 and the fixed base 1. For example, the length of the screw 411 extending into the locking hole 1121 can be, but is not limited to, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, or other values ​​greater than 0.5 mm.

[0266] In some embodiments, the bearing surface 211 is disposed away from the bottom wall 111 of the fixed base 1, and the bearing surface 211 is inclined relative to the bottom wall 111 of the fixed base 1. The bearing surface 211 is used to support the optical element 201. In this embodiment, the bearing surface 211 is inclined, which is beneficial for the inclined surface to adapt to the reflective surface of the optical element 201 and improves the installation stability.

[0267] In some embodiments, the receiving space 212 may be located between the bearing surface 211 and the bottom wall 111 of the fixed base 1, so that the self-locking component 4 is located between the bearing surface 211 and the bottom wall 111, which is beneficial to reducing the space occupied by the self-locking component 4, improving the space utilization of the motor 10, and miniaturizing the motor 10.

[0268] Please refer to Figures 10B, 13, and 21. Figure 21 is a structural schematic diagram of the self-locking component 4 shown in Figure 8A after being cut along line DD in some other embodiments. It should be noted that the self-locking component 4 shown in Figure 21 may include most of the features of the self-locking component 4 shown in Figure 12, and the same features will not be described again here.

[0269] In some embodiments, the self-locking assembly 4 may not include the drive shaft 43, and the output shaft 421 of the drive member 42 may be directly connected to the screw 411. The nut 412 may be mounted on the motion platform 2, and the nut 412 has a limiting structure 4127. The limiting structure 4127 cooperates with the motion platform 2 to restrict the rotation of the nut 412. The drive member 42 is used to rotate through the output shaft 421 to drive the screw 411 to rotate. The rotation of the screw 411 causes the nut 412 to extend or retract relative to the motion platform 2.

[0270] In this embodiment, the movement platform 2 can be locked to the fixed base 1 by extending the nut 412 relative to the movement platform 2, and the movement platform 2 can be unlocked to the fixed base 1 by retracting the nut 412 relative to the movement platform 2.

[0271] The limiting structure 4127 can be a protruding structure or a groove structure, etc. Correspondingly, a matching structure is provided in the opening 222 of the moving platform 2 so that the nut 412 cannot rotate, but can move relative to the moving platform 2 in the third direction Y. For example, when the limiting structure 4127 is a protruding structure, the inner wall of the opening 222 is provided with a groove structure, and the two sides cooperate to achieve a sliding connection; or, when the limiting structure 4127 is a groove structure, the inner wall of the groove can be provided with a protruding structure, and the two sides cooperate to achieve a sliding connection.

[0272] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the protection scope of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0273] It should be noted that all the above figures are exemplary illustrations of this application and do not represent the actual size of the product. Furthermore, the dimensional proportions between the components in the figures are not intended to limit the actual product of this application.

[0274] The above are merely some embodiments and implementation methods of this application. The scope of protection of this application is not limited thereto. Any variations 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. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A motor (10) characterized by, It comprises a fixed base (1), a moving platform (2), a driving assembly (3) and a self-locking assembly (4); The self-locking assembly (4) is fixedly installed on the moving platform (2), and comprises a driving member (42) and two telescopic members (41); the driving member (42) has two output shafts (421), and the two output shafts (421) are oppositely arranged; one telescopic member (41) is connected with one output shaft (421); and the driving member (42) is used for driving the two telescopic members (41) to simultaneously extend or retract. The fixed base (1) is provided with at least two oppositely arranged locking holes (1121); the two oppositely arranged locking holes (1121) are located on the opposite sides of the driving member (42); and the driving assembly (3) is connected with the moving platform (2) and the fixed base (1), and is used for driving the moving platform (2) to move relative to the fixed base (1) so as to align the telescopic members (41) with the locking holes (1121), and one telescopic member (41) corresponds to one locking hole (1121). When the motor (10) is in the locked state, the two telescopic members (41) extend into the corresponding locking holes (1121). When the motor (10) is in the unlocked state, the two telescopic members (41) are located outside the corresponding locking holes (1121).

2. The motor (10) of claim 1, wherein, The telescopic member (41) comprises a screw rod (411) and a nut (412). The screw rod (411) is connected between the output shaft (421) and the nut (412), passes through the nut (412) and is in threaded connection with the nut (412). The nut (412) is fixedly installed on the moving platform (2). The driving member (42) is used for driving the screw rod (411) to rotate relative to the nut (412), and the screw rod (411) is driven by the output shaft (421) to extend or retract relative to the moving platform (2).

3. The motor (10) of claim 2, wherein, The nut (412) has a threaded hole (4121) provided with an internal thread (4122). The screw rod (411) has an external thread (4112), and the screw rod (411) passes through the threaded hole (4121) and is in threaded connection with the internal thread (4122). The directions of the external threads (4112) of the screw rods (411) in the two telescopic members (41) are opposite, and the directions of the internal threads (4122) of the nuts (412) in the two telescopic members (41) are opposite.

4. The motor (10) of claim 3, wherein The external thread (4112) has a first thread starting point (4112a), and in a plane perpendicular to the axis of the screw rod (411) and passing through the first thread starting point (4112a), the first thread starting point (4112a) and the center of the screw rod (411) form a first connecting line; The first angle between the first connecting line and the axis of the screw rod (411) is less than or equal to 2°.

5. A motor (10) as claimed in claim 3 or 4, characterised in that, The inner thread (4122) has a second thread starting point (4122a), and in a plane perpendicular to the axis of the nut (412) and passing through the second thread starting point (4122a), the second thread starting point (4122a) and the center of the nut (412) form a second connecting line; The second angle between the second connecting line and the axis of the nut (412) is less than or equal to 2°.

6. A motor (10) as claimed in any one of claims 2 to 5, characterised in that, The pitches of the outer threads (4112) of the screw rods (411) in the two telescopic members (41) are the same. And / or, the pitches of the inner threads (4122) of the nuts (412) in the two telescopic members (41) are the same.

7. A motor (10) as claimed in any one of claims 2 to 6, characterised in that, The self-locking assembly (4) further comprises a transmission shaft (43), a first end (431) of the transmission shaft (43) is connected to the output shaft (421), and a second end (432) of the transmission shaft (43) is connected to the screw rod (411). The screw rod (411) has a transmission groove (4111), and the second end (432) of the transmission shaft (43) is located in the transmission groove (4111). The second end (432) of the transmission shaft (43) has a transmission face (433), the transmission face (433) is located in the transmission groove (4111), and an assembly gap (44) exists between the transmission face (433) and the side wall of the transmission groove (4111). The transmission face (433) abuts against the side wall of the transmission groove (4111) under the rotation of the transmission shaft (43) to drive the rotation of the screw rod (411).

8. The motor (10) of claim 7, wherein, The second end (432) of the transmission shaft (43) has a plurality of transmission faces (433), the second end (432) of the transmission shaft (43) is adapted to the shape of the transmission groove (4111), each transmission face (433) is arranged corresponding to one side wall of the transmission groove (4111), and the assembly gap (44) exists between each transmission face (433) and the corresponding side wall of the transmission groove (4111).

9. A motor (10) as claimed in claim 7 or 8, characterised in that, The telescopic member (41) further comprises an elastic member, and the elastic member is filled in the assembly gap (44).

10. A motor (10) as claimed in any one of claims 7 to 9, characterised in that, The assembly gap (44) D1 satisfies: 0 < D1 ≤ 0.2 mm.

11. A motor (10) as claimed in any one of claims 7 to 10, characterised in that, The number of transmission faces (433) of the transmission shaft (43) in the two telescopic members (41) is the same, and the transmission faces (433) of the two transmission shafts (43) are arranged one by one corresponding to each other, and the transmission faces (433) arranged corresponding to each other between the two transmission shafts (43) are arranged in parallel.

12. The motor (10) of claim 7, wherein, The screw rod (411) has a transmission groove (4111), the second end (432) of the transmission shaft (43) has elasticity, the second end (432) of the transmission shaft (43) is located in the transmission groove (4111), and abuts against the side wall of the transmission groove (4111).

13. The motor (10) according to any one of claims 2 to 12, characterized in that The motion platform (2) has an opening (222), the nut (412) is fixedly installed in the opening (222), and the screw rod (411) passes through the nut (412) to pass through the opening (222).

14. The motor (10) of claim 13, wherein, The outer periphery of the nut (412) is provided with a limiting groove (4123), and the limiting groove (4123) is clamped on the inner wall of the opening (222).

15. The motor (10) as claimed in any of claims 2 to 14, characterized in that The motor (10) further comprises a self-locking detection assembly (7), and the self-locking detection assembly (7) comprises a sensing magnet (72) and a detection chip (71). The sensing magnet (72) is installed at one end of the screw rod (411) away from the driving piece (42), the detection chip (71) is installed in the locking hole (1121), and the detection chip (71) is used for detecting the length of the screw rod (411) extending into the locking hole (1121).

16. The motor (10) of claim 1, wherein, The telescopic piece (41) comprises a screw rod (411) and a nut (412). The screw rod (411) is fixedly connected with the driving piece (42), the screw rod (411) passes through the nut (412) and is in threaded connection with the nut (412). The nut (412) is installed on the motion platform (2), the nut (412) has a limiting structure (4127), and the limiting structure (4127) cooperates with the motion platform (2) to limit rotation of the nut (412). The driving piece (42) is used for driving the screw rod (411) to rotate to drive the nut (412) to extend or retract relative to the motion platform (2).

17. The motor (10) of any one of claims 1 to 16, characterized in that The motion platform (2) has a bearing surface (211), the bearing surface (211) is arranged away from the bottom wall (111) of the fixed base (1), and the bearing surface (211) is arranged to be inclined relative to the bottom wall (111) of the fixed base (1), and the bearing surface (211) is used for bearing the optical element (201). The motion platform (2) has a receiving space (212) located between the bearing surface (211) and the bottom wall (111) of the fixed base (1) and used for receiving the self-locking assembly (4).

18. The motor (10) of claim 17, wherein, The inner wall of the receiving space (212) comprises an installation wall (215), the installation wall (215) is profiled with the outer side surface of the driving piece (42), and the driving piece (42) is installed on the installation wall (215).

19. A motor (10) as claimed in claim 17 or 18, characterised in that, The motion platform (2) has a limiting hole (213) communicating with the receiving space (212). The driving piece (42) has an end plate (423), and part of the end plate (423) is located in the limiting hole (213).

20. The motor (10) of any one of claims 1 to 19, wherein, The motion platform (2) is locked with the fixed base (1), and the length of the telescopic piece (41) extending into the locking hole (1121) is greater than or equal to 0.5 mm.

21. The motor (10) of any one of claims 1 to 20, wherein, The motor (10) further comprises a position detection assembly (5), and the position detection assembly (5) comprises a magnetic grid (51) and a tunnel magnetoresistance (52). The magnetic grating (51) is mounted on the fixed base (1), and the magnetic grating (51) is arranged along the direction in which the moving platform (2) moves relative to the fixed base (1); The tunnel magnetoresistance (52) is mounted on the moving platform (2), and the tunnel magnetoresistance (52) is arranged at least partially opposite to the magnetic grating (51), and the position detection assembly (5) is configured to detect the position of the tunnel magnetoresistance (52) relative to the magnetic grating (51) to detect the position of the moving platform (2) relative to the fixed base (1).

22. The motor (10) of any one of claims 1 to 21, wherein, The fixed base (1) is provided with a first group of locking holes (1121A) and a second group of locking holes (1121B) arranged at intervals, and the first group of locking holes (1121A) and the second group of locking holes (1121B) each include two locking holes (1121) arranged opposite to each other. The driving assembly (3) is configured to drive the moving platform (2) to move relative to the fixed base (1) to a first position to align the telescopic member (41) with the first group of locking holes (1121A). The driving assembly (3) is further configured to drive the moving platform (2) to move relative to the fixed base (1) to a second position to align the telescopic member (41) with the second group of locking holes (1121B).

23. The motor (10) of any one of claims 1 to 22, wherein, The driving member (42) is a stepper motor.

24. An image capture module (100) comprising: The lens (20) includes an optical element (201) and a lens group (202), the optical element (201) is mounted on the moving platform (2) of the motor (10), and the lens group (202) is located on the image side of the optical element (201). The optical element (201) is configured to change the light rays incident on the camera module (100) along a first direction (Z) to propagate along a second direction (X).

25. The camera module (100) of claim 24, wherein, The lens (20) further includes a first mirror group (203) and a second mirror group (204), and the first mirror group (203) and the second mirror group (204) are arranged at intervals. The moving platform (2) is configured to drive the optical element (201) to move to the first position to receive light rays passing through the first mirror group (204). The moving platform (2) is further configured to drive the optical element (201) to move to the second position to receive light rays passing through the second mirror group (205).

26. An electronic device (1000) comprising: The camera module (100) is mounted on the housing (300).

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