Focusing motor, camera module, and electronic device

Abstract

The present application provides a focusing motor, a camera module, and an electronic device. The focusing motor comprises a base, a support, and a driving mechanism. The support is slidably connected to the base. The driving mechanism comprises a coil and a first magnetic member, both of which cooperate to drive the support to move in a first direction relative to the base. The driving mechanism is used to drive the support to move from a first position to a second position, so as to switch the focusing motor from a non-working state to a focusing state. The driving mechanism is further used to drive the support to move from the second position to a third position. In the process of moving the support from the first position to the second position, a first current is inputted to the coil. In the process of moving the support from the second position to the third position, a second current is inputted to the coil. Current directions of the first current and the second current are opposite. In the process of moving the support from the first position to the third position, the distance between the support and the base in the first direction gradually increases. According to the focusing motor of the present application, thinning requirements are taken into account while the requirements of long-focal-length image capture are met.

Description

Focus motors, camera modules, and electronic devices

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on February 7, 2024, with application number 202410174841.8, and priority to the Chinese patent application entitled “Focus motor, camera module and electronic device”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of photography, and in particular to a focus motor, a camera module, and an electronic device. Background Art

[0003] As consumer demand increases, users are placing increasingly high demands on autofocus in terminal electronic devices. Currently, the focus motors on the market are typically voice coil motors, which use a coil and magnet to drive the lens back and forth to achieve focus. The overlapping area of ​​the coil and magnet must cover the focus motor's range. As the focus range increases, the height of the focus motor itself also increases. However, the trend toward thinner and lighter terminal electronic devices has limited the height of the focus motor, making the current focus motors on the market unable to meet the requirements of long-focus shooting scenarios. Developing a focus motor that is both compact and capable of long-focus shooting has become a current research topic. Summary of the Invention

[0004] The embodiments of the present application provide a focus motor, a camera module, and an electronic device, aiming to provide a focus motor that is relatively small in height and capable of achieving telephoto shooting, a camera module including the focus motor, and an electronic device including the camera module.

[0005] In a first aspect, a focus motor is provided. The focus motor includes:

[0006] base;

[0007] a bracket, slidably connected to the base, the bracket being used to mount the first optical element; and

[0008] A drive mechanism includes a coil and a first magnetic member, wherein one of the coil and the first magnetic member is fixed to the base, and the other is fixed to the bracket, and the coil and the first magnetic member cooperate to drive the bracket to move relative to the base in a first direction, where the first direction is the optical axis direction of the first optical element;

[0009] The driving mechanism is used to drive the bracket to move from the first position to the second position, so that the focus motor switches from the non-working state to the focusing state, and the driving mechanism is also used to drive the bracket to move from the second position to the third position;

[0010] When the bracket moves from the first position to the second position, the coil inputs a first current. When the bracket moves from the second position to the third position, the coil inputs a second current. The current directions of the first current and the second current are opposite. When the bracket moves from the first position to the third position, the distance between the bracket and the base in the first direction gradually increases.

[0011] It is understandable that when the focus motor in this embodiment is in a non-working state, the distance between the bracket and the base is small, which is conducive to compressing the overall structural height of the focus motor to meet the thinning requirements of electronic devices. When the focus motor is working, the drive mechanism can first drive the bracket to move relative to the base in a first direction, so that the bracket moves from the first position to the second position, so as to gradually increase the distance between the bracket and the base in the first direction, and complete the pop-up work before focusing. Then, when the bracket is in the second position, the current direction of the coil is changed so that the bracket can continue to slide in the first direction, increasing the distance between the bracket and the base in the first direction, and at the same time, the first optical element installed on the bracket can enter the focusing stroke section, so that the focus motor switches from the non-working state to the focusing state and performs the focusing work. After the current direction of the coil is changed, the drive mechanism can continue to drive the bracket from the second position to the third position, so that the focus of the optical system can be located on the imaging plane to achieve optical focus. Among them, the force exerted by the drive mechanism on the bracket is the electromagnetic force generated between the coil and the first magnetic member (that is, the first driving force). As the bracket moves from the first position to the third position, the distance between the bracket and the base in the first direction Z gradually increases. In other words, the focus motor in this embodiment is a pop-up focus motor, which can meet the requirements of long-focus shooting scenarios while maintaining a relatively low height to meet the requirements of thinness. Furthermore, the focus motor in this embodiment utilizes only one drive mechanism that, by changing the direction of the current flowing through the coil, can simultaneously drive the bracket to pop out (i.e., move from the first position to the second position) and drive the bracket to focus within the focus range (i.e., move from the second position to the third position). This results in a relatively simple structural arrangement, facilitating the miniaturization of the focus motor.

[0012] In one possible implementation, the first magnetic member includes a first top surface and a first bottom surface disposed opposite each other along a first direction, and the coil includes a second top surface and a second bottom surface disposed opposite each other along the first direction. When the bracket is in the first position, the distance between the second bottom surface and the first top surface is a first distance, the distance between the second bottom surface and the first bottom surface is a second distance, and the ratio of the first distance to the second distance is less than 3. When the bracket is in the second position, the distance between the second bottom surface and the first top surface is a third distance, the distance between the second bottom surface and the first bottom surface is a fourth distance, and the ratio of the third distance to the fourth distance is greater than or equal to 3. When the bracket is in the third position, the distance between the second bottom surface and the first top surface is greater than or equal to the third distance. Thus, when the bracket is in the first position, the first magnetic member and the coil can be offset in the first direction, and the offset distance between the two in the first direction is large, thereby reducing the distance between the bracket and the base, thereby reducing the overall height of the focus motor. Furthermore, when the focus motor switches from the non-operating state to the focusing state, the bracket has a longer travel distance from the first position to the second position, thereby better meeting the requirements of long-focus shooting scenarios. In other words, the focus motor in this embodiment can meet the requirements of long focal length shooting scenes while having a relatively small height to meet the requirements of thinness.

[0013] In one possible implementation, when the bracket is in the first position, the first distance is smaller than the second distance. Thus, when the bracket is in the first position, the first magnetic member and the coil are offset from each other in the first direction by a larger distance, which helps better meet the requirements of long-focus shooting scenarios while also meeting the requirements of thinness.

[0014] In one possible implementation, the first magnetic member further includes a center plane located between the first top surface and the first bottom surface, and the distance between the center plane and the second bottom surface of the coil is equal to the distance between the center plane and the second top surface of the coil. When the bracket is in the first position, the center plane is located on the side of the second bottom surface facing away from the second top surface. When the bracket is in the second position, the center plane is located between the second top surface and the second bottom surface in the first direction. In this way, when the bracket is in the first position, the first magnetic member and the coil are offset by a larger distance in the first direction, which helps better meet the requirements of long-focus shooting scenarios while also taking into account the requirements of thinness.

[0015] In one possible implementation, the first magnetic member includes a first magnet and a second magnet arranged in a first direction, the polarity direction of the first magnet and the polarity direction of the second magnet are parallel and opposite, and the polarity direction of the first magnet and the polarity direction of the second magnet both intersect with the first direction; when the bracket is in the first position, the contact surface between the first magnet and the second magnet is located on the side of the second bottom surface of the coil facing away from the second top surface; when the bracket is in the second position, in the first direction, the contact surface between the first magnet and the second magnet is located between the second top surface and the second bottom surface of the coil. In this way, when the bracket is in the first position, the offset distance between the first magnetic member and the coil in the first direction is large, which is conducive to better meeting the requirements of long-focal-length shooting scenarios while taking into account the requirements of thinness.

[0016] In one possible implementation, the coil is fixed to the base, and the first magnetic member is fixed to the bracket. The focus motor also includes a sliding member and a first magnetic member. The sliding member is fixed to the base, and the bracket is slidably connected to the base via the sliding member. The first magnetic member is fixed to the base and is located on the side of the coil facing away from the first magnetic member. A first magnetic attraction force is generated between the first magnetic member and the first magnetic member. In this way, by providing the first magnetic member, the magnetic attraction force generated between the first magnetic member and the first magnetic member can make the bracket close to the sliding member, thereby effectively improving the movement stability of the bracket.

[0017] In one possible implementation, the first magnetic component includes a third bottom surface and a third top surface arranged opposite to each other along the first direction. When the bracket is in the first position, the distance between the third bottom surface and the first top surface of the first magnetic component is the fifth distance, and the distance between the third bottom surface and the first bottom surface of the first magnetic component is the sixth distance, and the ratio of the fifth distance to the sixth distance is less than 3; when the bracket is in the second position, the distance between the third bottom surface and the first top surface is the seventh distance, and the distance between the third bottom surface and the first bottom surface is the eighth distance, and the ratio of the seventh distance to the eighth distance is greater than or equal to 3; when the bracket is in the third position, the distance between the third bottom surface and the first top surface is greater than or equal to the seventh distance; the first magnetic force is used to drive the bracket to move from the first position to the second position.

[0018] It will be appreciated that the focus motor in this embodiment further includes a first magnetic member, which can be fixed to the base and positioned opposite the coil. The first magnetic member can generate a first magnetic attraction force with the first magnetic member. When the bracket is in the first position, the first magnetic member can be offset from the first magnetic member in a first direction. Thus, on the one hand, the magnetic attraction between the first magnetic member and the first magnetic member can keep the bracket in close contact with the slider, improving the bracket's movement stability. On the other hand, the magnetic attraction between the first magnetic member and the first magnetic member can also serve as a second driving force, working together with the first driving force to drive the bracket to slide relative to the base. In this way, the first magnetic member can achieve "multiple uses," helping to reduce the number of internal components in the focus motor and conserve internal space. Furthermore, the first and second driving forces acting together on the bracket can help increase the speed at which the bracket moves from the first position to the second position, improving the operating response of the focus motor and enhancing the user experience.

[0019] In one possible implementation, when the bracket is in the first position, the fifth distance is smaller than the sixth distance. Thus, when the bracket is in the first position, the first magnetic member and the first magnetic attraction member are offset more in the first direction, which helps better meet the requirements of long-focus shooting scenarios while also meeting the requirements of thinness.

[0020] In one possible implementation, the focus motor further includes a second magnetic component, which is fixed to the base. The second magnetic component is arranged closer to the bottom of the base than the first magnetic component, and a second magnetic force is generated between the second magnetic component and the first magnetic component.

[0021] It is understandable that when the bracket moves between the first position and the second position, the overlapping area between the projection of the first magnetic part on the plane where the first magnetic part is located and the first magnetic part is small, and the magnetic component force between the first magnetic part and the first magnetic part along the thickness direction of the first magnetic part is small, which makes it easy for the bracket to detach from the sliding part, affecting the movement stability of the bracket. In this embodiment, a second magnetic part is also provided on the base, and the second magnetic part is provided near the first platform of the base relative to the first magnetic part. In this way, when the bracket moves between the first position and the second position, a magnetic component force along the thickness direction of the second magnetic part can be generated between the second magnetic part and the first magnetic part, so that the bracket can also be close to the sliding part when moving between the first position and the second position, thereby improving the movement stability of the bracket.

[0022] In one possible implementation, when the bracket is in the second position, the first bottom surface of the first magnetic member is located on the side of the second magnetic member facing the first magnetic member in the first direction. Thus, when the bracket is within the focus stroke, the first magnetic member can be completely offset from the second magnetic member. This prevents the second magnetic member 82 from exerting a magnetic attraction on the first magnetic member during focusing, thereby improving the accuracy of the focus motor's movement.

[0023] In one possible implementation, the base includes a frame and a bottom. The frame is fixedly connected to the periphery of the bottom, the coil is fixed to the frame, and the bracket is located inside the frame and slidably connected to the frame. When the bracket is in a first position, the distance between the bracket and the bottom is a first height. When the bracket is in a second position, the distance between the bracket and the bottom is a second height. When the bracket is in a third position, the distance between the bracket and the bottom is a third height. The first height is less than the second height, and the second height is less than or equal to the third height. Thus, when the bracket is in the first position, the distance between the bracket and the base is smaller, resulting in a smaller overall height of the focus motor. When the bracket is in the second position, the distance between the bracket and the base is larger. In other words, when the bracket switches from a non-operating state to a focusing state, the travel distance from the first position to the second position is longer, thereby better meeting the requirements of long-focus-length photography scenarios. In other words, the focus motor in this embodiment can meet the requirements of long-focus-length photography scenarios while maintaining a smaller height, thus meeting the requirements of a thinner design.

[0024] In one possible implementation, the focus motor also includes a first elastic member, which is fixed to the bottom and arranged opposite to the bracket. The bracket also includes a pop-up position between the first position and the second position. When the bracket is in the first position, the first elastic member is in an extended state or a compressed state. When the bracket is in the pop-up position, the first elastic member is in an original state. When the bracket moves from the first position to the second position, the first elastic member switches from the extended state or the compressed state to the original state to drive the bracket to move from the first position to the pop-up position.

[0025] It can be understood that the present embodiment also includes a first elastic member. When the bracket is in the first position, the first elastic member is in an extended state or a compressed state, that is, a deformed state. When the bracket moves from the first position to the second position, the first elastic member can release the elastic force, and the elastic force can act on the bracket as a third driving force. The third driving force can be used together with the first driving force to drive the bracket to slide relative to the base along the first direction, so that the bracket moves from the first position to the pop-up position. In this way, when the pop-up stroke length of the focus motor is the same, by setting the first elastic member to assist in driving the bracket to move from the first position to the pop-up position, it is beneficial to improve the working response speed of the focus motor. When the first driving force of the driving mechanism is the same, the first elastic member is set to assist in driving the bracket to slide, and the pop-up stroke length of the focus motor can also be increased, which is beneficial to better meet the requirements of telephoto shooting scenes.

[0026] In one possible implementation, the first elastic member is an elastic spring, comprising a fixed portion and an elastic portion. The fixed portion is fixedly connected to the bottom, and the elastic portion is suspended relative to the bottom and disposed opposite the bracket. When the bracket is in the first position, the bracket presses the elastic portion, and the first elastic member is in an extended state. When the bracket is in the pop-up position, the bracket contacts the elastic portion, and the first elastic member is in an initial state. When the bracket is in the second position, the bracket is spaced apart from the elastic portion. In this way, when the bracket moves from the pop-up position to the second position, the bracket can be spaced apart from the first elastic member, thereby preventing the first elastic member from exerting a force on the bracket opposite to the direction of movement of the bracket during the movement from the pop-up position to the second position, thereby affecting the movement of the bracket.

[0027] In one possible implementation, the bracket includes a first portion and a second portion, the first portion being fixedly connected to an end of the second portion, the first portion and the second portion being arranged at an angle, the first portion and the second portion defining a first escape space, and the second portion being used to mount a first optical element. The base includes a first platform, a connecting portion, and a second platform, the first platform and the second platform having a height difference in a first direction, the connecting portion being connected between the first and second platforms, the first platform being fixedly connected to a frame portion, at least a portion of the second platform and at least a portion of the connecting portion being spaced apart from the frame portion, the first platform, the connecting portion, and the frame portion collectively defining a second escape space, the second escape space being connected to the first escape space. When the bracket is in a first position, at least a portion of the first portion is located in the second escape space, and at least a portion of the second platform is located in the first escape space. Thus, by providing the first and second escape spaces, the bracket and the base can utilize each other's dimensions, thereby making the overall structure of the focus motor more compact and facilitating a thinner design of the focus motor.

[0028] In one possible implementation, the second portion is provided with a first through-hole for mounting the first optical element, the first through-hole communicating with the first escape space, the second platform is provided with a second through-hole, the second through-hole being arranged opposite the first through-hole and communicating with the first through-hole, the connecting portion, the second platform, and the frame portion collectively enclose a third escape space, the third escape space being spaced apart from the second escape space, the third escape space communicating with the first escape space via the second through-hole, and the third escape space being used to accommodate the second optical element and / or photosensitive component. Thus, by providing the third escape space, the second optical element and / or photosensitive component can also utilize the thickness of the base, thereby facilitating a thinner configuration of the focus motor and the second optical element and / or photosensitive component as a whole.

[0029] In one possible implementation, the focus motor further includes a circuit board, a second magnetic member, and a first position sensor. The second magnetic member is fixed to the bracket, the circuit board is fixedly connected to the base, and the first position sensor is fixed to the circuit board and positioned opposite the second magnetic member. The first position sensor is configured to detect the position of the second magnetic member. Thus, by providing the first position sensor in conjunction with the second magnetic member to detect the position of the bracket, the control accuracy of the focus motor is improved.

[0030] In one possible implementation, the focus motor also includes a second position sensor, secured to the circuit board and positioned closer to the bottom of the base than the first position sensor. The second position sensor is configured to detect the position of the first magnetic member. This second position sensor can assist the first position sensor in detecting the position of the bracket, thereby improving the control accuracy of the focus motor.

[0031] In one possible implementation, the focus motor further includes a second elastic member, one end of which is fixedly connected to the base, and the other end of which is fixedly connected to the bracket. When the bracket is in the first position, the second elastic member has a first length, and when the bracket is in the second position, the second elastic member has a second length, where the first length is greater than the second length. In this way, the elastic force of the second elastic member can also be used to assist in driving the bracket from the first position to the second position.

[0032] In the second aspect, a camera module is provided. The camera module includes a first optical element and the above-mentioned focus motor, and the first optical element is mounted on a bracket. It can be understood that the focus motor of the camera module in this embodiment is a pop-up focus motor, which can meet the needs of long-focus shooting scenes while having a relatively small height to take into account the need for thinness. At the same time, the focus motor in this embodiment is only provided with a set of driving mechanisms to change the current direction of the coil, thereby simultaneously realizing the pop-up of the driving bracket (that is, moving from the first position to the second position), and realizing the movement of the driving bracket within the focus stroke section to realize focusing (that is, moving from the second position to the third position). The structural setting is relatively simple, which is conducive to the miniaturization of the focus motor.

[0033] In one possible implementation, the camera module also includes a variable aperture, which is fixed to the bracket and sleeved on the first optical element. The focus motor also includes a second elastic member, which is conductive. One end of the second elastic member is fixedly connected to the base and electrically connected to the circuit board of the focus motor, and the other end of the second elastic member is fixedly connected to the bracket and electrically connected to the variable aperture. When the bracket is in the first position, the length of the second elastic member is the first length, and when the bracket is in the second position, the length of the second elastic member is the second length, and the first length is greater than the second length. In this way, on the one hand, the second elastic member can be used to power the variable aperture, and on the other hand, the elastic force of the second elastic member can also be used to assist in driving the bracket to move from the first position to the second position. The second elastic member can achieve "multiple uses", which is conducive to simplifying the structural setting of the focus motor.

[0034] In one possible implementation, the camera module also includes a photosensitive component, which is fixed to the light-emitting side of the focus motor. This makes the overall structure of the photosensitive component and the focus motor more compact, saving internal space in the camera module.

[0035] On the third aspect, an electronic device is provided. The electronic device includes a device housing and the above-mentioned camera module, and the camera module is installed in the device housing. It can be understood that the focus motor of the camera module in this embodiment is a pop-up focus motor, which can meet the needs of long-focus shooting scenes while having a relatively small height to take into account the thinness requirements, which is conducive to the thinning setting of the electronic device. At the same time, the focus motor in this embodiment is only provided with a set of driving mechanisms to change the current direction of the coil, so as to simultaneously realize the pop-up of the driving bracket (that is, moving from the first position to the second position), and realize the movement of the driving bracket within the focusing stroke section to realize focusing (that is, moving from the second position to the third position). The structural setting is relatively simple, which is conducive to the miniaturization of the focus motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the implementation methods or background technologies of the present application, the drawings required for use in the implementation methods or background technologies of the present application will be described below.

[0037] FIG1 is a schematic structural diagram of an electronic device provided in some embodiments of the present application;

[0038] FIG2 is a schematic cross-sectional view of the electronic device shown in FIG1 taken along line AA in one embodiment;

[0039] FIG3 is a schematic structural diagram of the camera module shown in FIG2 in some embodiments;

[0040] FIG4 is a schematic diagram of the exploded structure of the camera module shown in FIG3 in some embodiments;

[0041] FIG5 is a schematic cross-sectional view of the camera module shown in FIG3 taken along line BB in one embodiment;

[0042] FIG6 is a schematic structural diagram of a focus motor of the camera module shown in FIG3 ;

[0043] FIG7 is a schematic diagram of the exploded structure of the focus motor shown in FIG6 in some embodiments;

[0044] FIG8 is a partial cross-sectional structural diagram of an embodiment of the focus motor shown in FIG6 taken along CC;

[0045] FIG9 is a schematic structural diagram of the bracket shown in FIG7 from another perspective;

[0046] FIG10 is a schematic structural diagram of the bracket shown in FIG9 from another perspective;

[0047] FIG11 is a schematic diagram of an assembled structure of a portion of the focus motor shown in FIG7 in some embodiments;

[0048] FIG12 is a partial cross-sectional structural diagram of an embodiment of the focus motor shown in FIG6 taken along CC;

[0049] FIG13 is a schematic structural diagram of the fixed base shown in FIG7 from another perspective;

[0050] FIG14 is a schematic structural diagram of the fixed base shown in FIG13 from another perspective;

[0051] FIG15 is a schematic structural diagram of the first elastic member shown in FIG7 in some embodiments;

[0052] FIG16 is a schematic diagram of the assembly structure of the focus motor portion shown in FIG7 in some embodiments;

[0053] FIG17 is a schematic structural diagram of the structure shown in FIG16 from another perspective;

[0054] FIG18 is a schematic diagram of an assembled structure of a portion of the focus motor shown in FIG7 in some embodiments;

[0055] FIG19 is a partial cross-sectional structural diagram of an embodiment of the focus motor shown in FIG6 taken along CC;

[0056] FIG20 is a schematic cross-sectional view of the focus motor shown in FIG6 taken along CC in an embodiment;

[0057] FIG21 is a schematic structural diagram of the focus motor shown in FIG6 from another perspective;

[0058] FIG22 is a schematic cross-sectional view of the focus motor shown in FIG6 taken along line DD in one embodiment;

[0059] FIG23 is a schematic diagram of a partial cross-section of the focus motor shown in FIG20 when the bracket is in the first position;

[0060] FIG24 is a schematic diagram of a partial cross-section of the focus motor shown in FIG20 when the bracket is in the second position;

[0061] FIG25 is a schematic diagram of a partial cross-section of the focus motor shown in FIG20 when the bracket is in the third position;

[0062] FIG26 is a schematic diagram of a partial cross-section of the focus motor shown in FIG20 when the bracket is in the pop-up position. DETAILED DESCRIPTION

[0063] The embodiments of the present application are described below in conjunction with the accompanying drawings in the embodiments of the present application.

[0064] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. 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. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present application, such as "upper", "lower", "inside", "outside", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. "Multiple" means at least two.

[0065] In the embodiments of this application, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first," "second," "third," or "fourth" may explicitly or implicitly include one or more of the features.

[0066] In the embodiments of this application, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0067] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in some other embodiments," and "in another embodiment" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0068] It is understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings.

[0069] Fig. 1 is a schematic diagram of the structure of an electronic device 1000 provided in some embodiments of the present application. Fig. 2 is a schematic diagram of the cross-sectional structure of the electronic device 1000 shown in Fig. 1 taken along line AA in one embodiment.

[0070] As shown in Figures 1 and 2, electronic device 1000 can be a device with a camera module, such as a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a camera, a personal computer, a notebook computer, an in-vehicle device, a wearable device, augmented reality (AR) glasses, an AR helmet, virtual reality (VR) glasses, or a VR helmet. The electronic device 1000 of the embodiment shown in Figure 1 is described using a mobile phone as an example.

[0071] As shown in Figures 1 and 2, the electronic device 1000 may include a camera module 100, a device housing 200, and a screen 300. The camera module 100 may be a rear camera module or a front camera module. It should be noted that Figure 1 and the related figures below only schematically illustrate some components included in the electronic device 1000, and the actual shape, actual size, actual position and actual structure of these components are not limited by Figure 1 and the figures below. In addition, when the electronic device 1000 is a device of some other form, the electronic device 1000 may also not include the screen 300.

[0072] For ease of description, the thickness direction of the electronic device 1000 is defined as the Z axis, which is the first direction Z. The width direction of the electronic device 1000 is defined as the X axis, which is the second direction X. The length direction of the electronic device 1000 is defined as the Y axis, which is the third direction Y. It is understood that the coordinate system setting of the electronic device 1000 can be flexibly set according to specific actual needs.

[0073] In this embodiment, the device housing 200 may include a middle frame 201 and a back cover 202. The back cover 202 is fixed to the middle frame 201. Exemplarily, the back cover 202 may be fixed to the middle frame 201 by adhesive. The screen 300 may be located on a side of the middle frame 201 away from the back cover 202. In this case, the screen 300 and the back cover 202 are respectively located on both sides of the middle frame 201. The middle frame 201 and the back cover 202 may enclose the interior of the electronic device 1000. The interior of the electronic device 1000 may be used to place components of the electronic device 1000, such as a battery, a receiver, or a microphone. The screen 300 may be a flat screen or a curved screen.

[0074] For example, the camera module 100 can be located inside the electronic device 1000. The camera module 100 can be fixed to the side of the middle frame 201 facing the back cover 202. The back cover 202 can be provided with a light-transmitting hole 203. The shape of the light-transmitting hole 203 is not limited to the circular shape shown in FIG. 1 . The light-transmitting hole 203 connects the interior of the electronic device 1000 to the exterior of the electronic device 1000. Light outside the electronic device 1000 can enter the interior of the electronic device 1000 through the light-transmitting hole 203. The camera module 100 can collect ambient light entering the interior of the electronic device 1000.

[0075] Figure 3 is a schematic diagram of the structure of the camera module 100 shown in Figure 2 in some embodiments. Figure 4 is a schematic diagram of the exploded structure of the camera module 100 shown in Figure 3 in some embodiments. Figure 5 is a schematic diagram of the cross-sectional structure of the camera module 100 shown in Figure 3 taken along line BB in one embodiment.

[0076] As shown in Figures 3 to 5, the camera module 100 may include a focus motor 10, a first optical element 20, a second optical element 30, an iris diaphragm 40, and a photosensitive component 50 (see Figure 2). The first optical element 20 and the second optical element 30 may each include one or more optical lenses. The first optical element 20 and the second optical element 30 may together constitute the optical system of the camera module 100.

[0077] Exemplarily, the focus motor 10 may include a first through hole 10a and a second through hole 10b. The first through hole 10a and the second through hole 10b may be arranged opposite and in communication with each other. The first optical element 20 may be mounted in the first through hole 10a of the focus motor 10. The second optical element 30 may be mounted in the second through hole 10b of the focus motor 10. The variable aperture 40 may be fixed to the focus motor 10. The variable aperture 40 may be mounted on the portion of the first optical element 20 that is exposed relative to the first through hole 10a of the focus motor 10. The variable aperture 40 may be used to control the amount of light entering the first optical element 20. The photosensitive component 50 may be located on the side of the second optical element 30 that is opposite to the first optical element 20, i.e., the light-emitting side of the focus motor 10. The photosensitive component 50 may be arranged opposite the second optical element 30. Exemplarily, the photosensitive component 50 may be fixed to the middle frame 201 of the electronic device 1000. Light from outside the electronic device 1000 can enter the interior of the electronic device 1000 through the light-transmitting hole 203, then pass through the first optical element 20 and the second optical element 30 in sequence, and finally be imaged on the photosensitive component 50. In some embodiments, the photosensitive component 50 can also be fixed to the focus motor 10. In other embodiments, the camera module 100 may not include the second optical element 30. The photosensitive component 50 can also be fixed to the focus motor 10 and arranged opposite the first optical element 20.

[0078] For example, the focus motor 10 may include a base 1, a bracket 2, and a drive mechanism 3. The bracket 2 may be slidably connected to the base 1. A first through-hole 10a may be formed in the bracket 2. A second through-hole 10b may be formed in the base 1. Specifically, the first optical element 20 may be fixed to the bracket 2. The second optical element 30 may be fixed to the base 1. The drive mechanism 3 may be used to drive the bracket 2 to cause the first optical element 20 to slide relative to the base 1 along a first direction Z to achieve optical focus.

[0079] For example, the focus motor 10 can have a non-operating state and a focusing state. When the focus motor 10 is in the non-operating state, the bracket 2 can be in a first position. The distance between the first optical element 20 and the second optical element 30 is a first spacing. The drive mechanism 3 can drive the bracket 2 from the first position to the second position, thereby switching the focus motor 10 from the non-operating state to the focusing state. At this time, the distance between the first optical element 20 and the second optical element 30 is a second spacing. Subsequently, the drive mechanism 3 can also drive the bracket 2 from the second position to the third position, so that the focal point of the optical system of the camera module 100 is located on the imaging plane, completing optical focusing. During the movement of the bracket 2 from the second position to the third position, the second position can be considered the focus starting position, i.e., the position where the focus motor 10 begins focusing. The third position can be considered the focus completion position, i.e., the position where the focus motor 10 completes focusing. When the bracket 2 is in the second position, the distance between the first optical element 20 and the second optical element 30 is greater than when the bracket 2 is in the first position. That is, the second interval may be greater than the first interval.

[0080] Illustratively, the total motion range of the bracket 2 of the focus motor 10 may include an ejection range and a focus range. The range of the bracket 2 between the first and second positions is the ejection range. The third position of the bracket 2 can be any position within the focus range. The drive mechanism 3 of the focus motor 10 can also drive the bracket 2 to move the first optical element 20 back and forth multiple times within the focus range to perform multiple focusing operations. Illustratively, when the electronic device 1000 changes its posture and / or position due to user use, the focal position of the optical system of the camera module 100 may shift relative to the imaging plane. In this case, the focus motor 10 may also include a fourth position. The drive mechanism 3 can drive the bracket 2 from the third position to the fourth position so that the focal point of the optical system of the camera module 100 is repositioned on the imaging plane, completing the optical focus operation. During the movement of the bracket 2 from the third position to the fourth position, the third position can be considered the focus starting position, and the fourth position can be considered the focus completion position. That is, the movement of the bracket 2 from the third position to the fourth position can be considered the completion of a single focus operation. Similarly, the focus motor 10 may further include a fifth position, a sixth position, etc. In other words, when the focus motor 10 is in the focus state, it can change the position of the bracket 2 multiple times to complete multiple focusing operations to meet user needs.

[0081] It should be noted that the focus motor 10 shown in Figures 3 and 5 is a schematic diagram of the bracket 2 being in the third position, which is the middle position within the focus range. In other embodiments, the third position can also be any other position of the bracket 2 within the focus range.

[0082] It will be appreciated that in this embodiment, when the focus motor 10 is in the non-operating state, the bracket 2 is in the first position, and the distance between the first optical element 20 and the second optical element 30 is relatively close. This helps reduce the overall height of the focus motor 10, thereby meeting the requirements for a thinner electronic device 1000. When the focus motor 10 is in operation, the drive mechanism 3 can first drive the bracket 2 from the first position to the second position, switching the focus motor 10 from the non-operating state to the focus start state, allowing the first optical element 20 to enter the focus stroke. The drive mechanism 3 then drives the bracket 2 from the second position to the third position, switching the focus motor 10 from the focus start state to the focus completion state, positioning the focal point of the optical system on the imaging plane and achieving optical focus. In this case, the distance between the first optical element 20 and the second optical element 30 is relatively long, thus meeting the requirements for long focal length photography. Thus, when the focus motor 10 is in the non-operating state, the distance between the first optical element 20 and the second optical element 30 is relatively short, resulting in a relatively low overall height of the focus motor 10. When the focus motor 10 is operating, the drive mechanism 3 first drives the bracket 2 to cause the first optical element 20 to pop out a certain distance relative to the base 1 (i.e., move from the first position to the second position), so that the first optical element 20 enters the focus range. After the first optical element 20 enters the focus range, the drive mechanism 3 then drives the bracket 2 to move the first optical element 20 from the second position to the third position, achieving optical focus and meeting the requirements of long-focus shooting scenarios. In other words, the focus motor 10 in this embodiment is a pop-up focus motor, which can meet the requirements of long-focus shooting scenarios while being relatively low in height to meet the requirements of thinness.

[0083] In some embodiments, the camera module 100 may further include a lens cover (not shown) and a lens cover drive mechanism (not shown). The lens cover may be fixed to the image side of the variable aperture 40. The lens cover drive mechanism may be used to drive the lens cover to move in a first direction Z. For example, the lens cover drive mechanism may be a stepping motor. When the focus motor 10 needs to focus, the lens cover, under the action of the lens cover drive mechanism, may move together with the bracket 2 in a direction away from the photosensitive component 50. When the focus motor 10 needs to switch from a focus state to a non-focus state, the bracket 2 may need to move from its current position to the first position. In this case, the lens cover drive mechanism may drive the lens cover to move the bracket 2 toward the photosensitive component 50, thereby returning the bracket 2 to the first position. In other words, the bracket 2 may be moved from its current optical focus position to the first position under the action of an external force (e.g., a force exerted by the lens cover on the bracket 2). In other embodiments, the bracket 2 may also be forced to return to its first position from its current optical focus position by other structures. This application is not limited to this.

[0084] It should be noted that, unless otherwise specified, the focus motor 10 shown in the subsequent figures are schematic diagrams of the bracket 2 being located in the middle position of the focus stroke segment.

[0085] The specific structure of the focus motor 10 in this embodiment and the relative positional relationship between the various components of the focus motor 10 in different states will be described in detail below with reference to the relevant drawings.

[0086] Fig. 6 is a schematic diagram of the structure of the focus motor 10 of the camera module 100 shown in Fig. 3. Fig. 7 is a schematic diagram of the exploded structure of the focus motor 10 shown in Fig. 6 in some embodiments.

[0087] As shown in Figures 6 and 7, the driving mechanism 3 of the focus motor 10 may include a coil 31 and a first magnetic member 32. The focus motor 10 may also include a housing 4, a second magnetic member 5, a slider 6, a first position sensor 71, a second position sensor 72, a first magnetic member 81, a second magnetic member 82, a first elastic member 9, a circuit board 101, and a second elastic member 102. In other embodiments, the focus motor 10 may not include any one or more of the second magnetic member 5, the slider 6, the first position sensor 71, the second position sensor 72, the first elastic member 9, the second magnetic member 82, and the second elastic member 102.

[0088] Figure 8 is a partial cross-sectional structural diagram of an embodiment of the focus motor 10 shown in Figure 6 taken along CC. Figure 9 is a structural diagram of the bracket 2 shown in Figure 7 from another perspective. Figure 10 is a structural diagram of the bracket 2 shown in Figure 9 from yet another perspective.

[0089] As shown in Figures 8 to 10, the bracket 2 may include a first part 21 and a second part 22. The first part 21 may be fixedly connected to one end of the second part 22. The first part 21 and the second part 22 may be arranged at an angle, for example, the angle may be 90°. At this time, the first part 21 and the second part 22 may enclose a first avoidance space 2a. It should be noted that the first part 21 and the second part 22 of the bracket 2 are schematically divided by dotted lines in Figure 8. It should be understood that although the bracket 2 is described as two parts in this embodiment, it does not affect the integral molding of the first part 21 and the second part 22, that is, the bracket 2 may be an integrally molded structure. In other embodiments, the first part 21 and the second part 22 may also be two independent structural members. The first part 21 may be fixedly connected to the second part 22 by bonding, screwing, clamping, etc.

[0090] For example, the first portion 21 may include a first chute 211 and a second chute 212 spaced apart. The lengths of the first chute 211 and the second chute 212 may both extend parallel to the first direction Z. The first portion 21 may also include a first mounting groove 213 and a second mounting groove 214. The first mounting groove 213 may be located between the first chute 211 and the second chute 212. The second mounting groove 214 may be located on a side of the first chute 211 facing away from the first mounting groove 213.

[0091] Exemplarily, the second portion 22 may include a first surface 221 and a second surface 222 disposed opposite to each other. The first surface 221 may face the first avoidance space 2a. The second portion 22 may further include a first through hole 10a. The length extension direction of the first through hole 10a may be parallel to the first direction Z. The first through hole 10a may pass through the first surface 221 and the second surface 222 and connect to the first avoidance space 2a. The first surface 221 of the second portion 22 may further be provided with a column 2211. The column 2211 may be located in the first avoidance space 2a. The number of the columns 2211 may be multiple, for example, three. The three columns 2211 may be spaced apart around the first through hole 10a.

[0092] FIG. 11 is a schematic diagram of an assembly structure of a portion of the focus motor 10 shown in FIG. 7 in some embodiments.

[0093] As shown in Figures 7 and 11, the first magnetic member 32 can be fixed to the first mounting groove 213 of the first portion 21. The first magnetic member 32 can include a first top surface 32a and a first bottom surface 32b arranged opposite to each other along a first direction. The first magnetic member 32 can also include a center surface 32c located between the first top surface 32a and the first bottom surface 32b. The distance between the center surface 32c and the first top surface 32a can be equal to the distance between the center surface 32c and the first bottom surface 32b.

[0094] Exemplarily, the first magnetic member 32 may include a first magnet 321 and a second magnet 322. The first magnet 321 and the second magnet 322 may have identical shapes and sizes. The first magnet 321 and the second magnet 322 may be arranged along a first direction Z. In this case, the contact surface between the first magnet 321 and the second magnet 322 may constitute the center plane 32c of the first magnetic member 32. The polarity direction of the first magnet 321 and the polarity direction of the second magnet 322 may be parallel and opposite. The polarity direction of the first magnet 321 may intersect the first direction, for example, may be perpendicular to the first direction. It should be understood that the polarity direction may be the direction in which the north pole of the magnet points to the south pole. In other embodiments, the contact surface between the first magnet 321 and the second magnet 322 may be offset from the center plane 32c of the first magnetic member 32. It should be understood that the magnetic circuit configuration of the first magnetic member 32 is quite diverse. This embodiment illustrates only one embodiment of the first magnetic member 32. In other embodiments, the first magnetic member 32 may also be configured as a Halbach magnet array, for example.

[0095] Exemplarily, the second magnetic member 5 can be fixed to the second mounting groove 214 of the first part 21. The second elastic member 102 can be conductive. Exemplarily, the second elastic member 102 can be a conductive spring. The second elastic member 102 can include a first end 1021 and a second end 1022. The first end 1021 of the second elastic member 102 can be fixedly connected to the first part 21 of the bracket 2. The number of second elastic members 102 can be multiple, for example, four. In other embodiments, the number of second elastic members 102 can also be other. Exemplarily, a metal part (not shown) can be embedded in the bracket 2, and the metal part can be electrically connected to the second elastic member 102. In this way, the second elastic member 102 can be electrically connected to other parts through the metal part inside the bracket 2, which is conducive to simplifying the assembly of the second elastic member 102 and saving space.

[0096] In some embodiments, the focus motor 10 may further include a reinforcement member (not shown). The reinforcement member may be a steel sheet. The reinforcement member may be embedded within the bracket 2 through methods such as injection molding. In this way, the reinforcement member can enhance the overall structural strength of the bracket 2 and extend the service life of the bracket 2. Part of the reinforcement member may be located in the first chute 211 and the second chute 212. This reinforcement member can provide structural reinforcement to the first chute 211 and the second chute 212, thereby improving the structural strength.

[0097] In some other embodiments, the reinforcement of the focus motor 10 may also have magnetic conductivity. Part of the reinforcement may be located at the first mounting slot 213 and the second mounting slot 214. For example, part of the reinforcement may be exposed relative to the first mounting slot 213 and the second mounting slot 214. In this way, magnetic attraction can be generated between the reinforcement and the first magnetic member 32 and the second magnetic member 5, which is conducive to improving the fixing stability of the first magnetic member 32 and the second magnetic member 5 to the bracket 2, thereby preventing the first magnetic member 32 and the second magnetic member 5 from falling off.

[0098] Figure 12 is a partial cross-sectional structural diagram of an embodiment of the focus motor 10 shown in Figure 6 taken along CC. Figure 13 is a structural diagram of the fixed base shown in Figure 7 from another perspective. Figure 14 is a structural diagram of the fixed base shown in Figure 13 from yet another perspective.

[0099] As shown in Figures 12 to 14, the base 1 may include a frame 11 and a bottom 12. The frame 11 may be fixedly connected to the periphery of the bottom 12 and, together with the bottom 12, enclose the interior of the base 1. It should be noted that the frame 11 and the bottom 12 of the base 1 are schematically divided by dotted lines in Figure 12. It should be understood that although the base 1 is described as two parts in this embodiment, this does not affect the integral molding of the frame 11 and the bottom 12, that is, the base 1 may be an integrally molded structure.

[0100] Exemplarily, the bottom 12 may include a first platform 121, a connecting portion 122, and a second platform 123. The surface of the first platform 121 facing the interior of the base 1 is a first surface 1211. The surface of the second platform 123 facing the interior of the base 1 is a second surface 1231. The first surface 1211 and the second surface 1231 may be spaced apart in the first direction Z. That is, the first surface 1211 and the second surface 1231 have a height difference in the first direction Z. The connecting portion 122 may be connected between the first platform 121 and the second platform 123. It should be noted that FIG12 also schematically divides the first platform 121, the connecting portion 122, and the second platform 123 of the bottom 12 by dotted lines.

[0101] By way of example, the first platform 121 can be connected to the inner circumferential sidewall 115 of the frame 11. A portion of the second platform 123 and a portion of the connecting portion 122 can be spaced apart from the inner circumferential sidewall 115 of the frame 11. A portion of the second platform 123 and a portion of the connecting portion 122 can be fixedly connected to the inner circumferential sidewall 115 of the frame 11. In this case, the connecting portion 122, together with the first platform 121 and the frame 11, can enclose a second escape space 1a. The second escape space 1a can be located within the base 1. In this case, the bottom 12 can have a generally stepped structure. The first surface 1211 and the second surface 1231 can be two stepped surfaces of the stepped structure. By way of example, the connecting portion 122 can also enclose a third escape space 1b together with the second platform 123. The third escape space 1b can be spaced apart from the interior of the base 1. In some embodiments, the second platform 123 and the connecting portion 122 can also be completely spaced apart from the inner circumferential sidewall 115 of the frame 11.

[0102] For example, the second through hole 10b can be formed in the second platform 123. The second through hole 10b can connect the interior of the base 1 and the third avoidance space 1b. The second surface 1231 of the second platform 123 can be provided with a fixing column 1232. The fixing column 1232 can be located inside the base 1. There can be multiple fixing columns 1232. Multiple fixing columns 1232 can be spaced around the second through hole 10b and spaced apart from the frame 11. To simplify the illustration, only some of the fixing columns 1232 are marked in Figures 12 to 14.

[0103] For example, the frame portion 11 may include a first fixing groove 111 and a second fixing groove 112 spaced apart from each other. The openings of the first fixing groove 111 and the second fixing groove 112 may both face the interior of the base 1. Part of the openings of the first fixing groove 111 and the second fixing groove 112 may also face the second avoidance space 1a.

[0104] Figure 15 is a schematic diagram of the structure of the first elastic member 9 shown in Figure 7 in some embodiments. Figure 16 is a schematic diagram of the assembly structure of the focus motor 10 shown in Figure 7 in some embodiments. Figure 17 is a schematic diagram of the structure shown in Figure 16 from another perspective.

[0105] As shown in Figures 15 to 17, the first elastic member 9 may be an elastic leaf spring. The number of first elastic members 9 may be the same as the number of posts 2211 of the bracket 2. In this embodiment, the number of first elastic members 9 may also be three. The shapes and sizes of the three first elastic members 9 may not be identical. In other embodiments, the shapes and sizes of the multiple first elastic members 9 may also be identical.

[0106] Exemplarily, the first elastic member 9 may include a first end portion 91, a first bending portion 92, a contact portion 93, a second bending portion 94, and a second end portion 95 connected in sequence. The first bending portion 92 and the second bending portion 94 may be bent once or multiple times. The first end portion 91 and the second end portion 95 of the first elastic member 9 may constitute the fixed portion 9a of the first elastic member 9. The first bending portion 92, the contact portion 93, and the second bending portion 94 may constitute the elastic portion 9b of the first elastic member 9. It should be understood that the first end portion 91, the first bending portion 92, the contact portion 93, the second bending portion 94, and the second end portion 95 of the first elastic member 9 are schematically divided by dotted lines in Figure 15.

[0107] For example, the first end 91 and the second end 95 of the first elastic member 9 can both be fixedly connected to two adjacent fixed columns 1232 of the base 1. In this case, the first bent portion 92, the contact portion 93, and the second bent portion 94 of the first elastic member 9 can all be suspended relative to the second surface 1231, that is, the fixed portion 9a of the first elastic member 9 can be fixedly connected to the fixed columns 1232, and the elastic portion 9b of the first elastic member 9 can be suspended relative to the second surface 1231 of the base 1. When the contact portion 93 of the first elastic member 9 is not affected by external forces, the first elastic member 9 as a whole can be in a relatively flat state, that is, the first end 91, the first bent portion 92, the contact portion 93, the second bent portion 94, and the second end 95 can be approximately in the same plane.

[0108] Please refer to Figures 16 and 17 again. The sliding member 6 can be a sliding shaft. The number of sliding members 6 can be two, for example, it can include a first sliding shaft 61 and a second sliding shaft 62. The first sliding shaft 61 and the second sliding shaft 62 can be fixed to the first fixed groove 111 and the second fixed groove 112, respectively. Part of the first sliding shaft 61 and part of the second sliding shaft 62 can be located in the second avoidance space 1a. In other embodiments, the sliding member 6 can also be a ball. For example, it can include a first group of balls and a second group of balls, and the two groups of balls can be installed in the first fixed groove 111 and the second fixed groove 112, respectively. Each group of balls can include at least one ball.

[0109] For example, the portion of the frame 11 between the first chute 211 and the second chute 212 is the first side portion 113. The first side portion 113 may be provided with a first avoidance groove 1131. The opening of the first avoidance groove 1131 may be formed on the inner peripheral sidewall of the first side portion 113. The opening of the first avoidance groove 1131 may be spaced apart from the second avoidance space 1a.

[0110] Exemplarily, the coil 31 may include a second top surface 311 and a second bottom surface 312 arranged opposite to each other along the first direction Z. The coil 31 may be fixed to the first avoidance groove 1131. At this time, the projection of the coil 31 in the first direction Z may not overlap with the second avoidance space 1a. In some embodiments, two limiting protrusions 1132 may also be provided in the first avoidance groove 1131. The coil 31 may be sleeved on the two limiting protrusions 1132 (Figure 14 also illustrates the two limiting protrusions 1132 from another angle). In this way, the limiting protrusions 1132 can assist the coil 31 in positioning and assembly, which is beneficial to improving the assembly accuracy of the coil 31. In other embodiments, a portion of the opening of the first avoidance groove 1131 may also face the second avoidance space 1a.

[0111] Exemplarily, the first magnetic member 81 can be fixed to the first avoidance groove 1131 and arranged opposite to the coil 31. The first magnetic member 81 may include a third top surface 811 and a third bottom surface 812 arranged opposite to each other along the first direction Z. In some embodiments, the bottom wall 1131a of the first avoidance groove 1131 can also be partially recessed inward to form a receiving groove 1131b. The opening of the receiving groove 1131b can face the coil 31. The first magnetic member 81 can be fixed to the receiving groove 1131b. In this way, by setting the receiving groove 1131b, physical interference between the first magnetic member 81 and the coil 31 can be avoided, which may affect the normal operation of the two.

[0112] For example, the second magnetic member 82 can be fixed to the outer peripheral sidewall of the first side portion 113. The projection of the second magnetic member 82 in the thickness direction can cover at least a portion of the second avoidance space 1a. In the first direction Z, the distance between the second magnetic member 82 and the first platform 121 can be less than the distance between the first magnetic member 32 and the first platform 121. In other words, the second magnetic member 82 can be positioned closer to the first platform 121 of the base 1 relative to the first magnetic member 81.

[0113] Fig. 18 is a schematic diagram of the assembly structure of a portion of the focus motor 10 shown in Fig. 7 in some embodiments. Fig. 19 is a schematic diagram of a partial cross-sectional structure of the focus motor 10 shown in Fig. 6 taken along CC in one embodiment.

[0114] As shown in Figures 18 and 19, the bracket 2 can be installed inside the base 1. Specifically, the first sliding groove 211 of the bracket 2 can be slidably connected to the first sliding shaft 61. The second sliding groove 212 of the bracket 2 can be slidably connected to the second sliding shaft 62. In other words, the bracket 2 can be slidably connected to the base 1 via the sliding member 6. The bracket 2 can slide relative to the base 1 along the first direction Z.

[0115] Exemplarily, the first magnetic member 32 can be arranged opposite to the coil 31. When the coil 31 is energized, an electromagnetic force along the first direction Z can be generated between the coil 31 and the first magnetic member 32 to drive the bracket 2 to slide along the first direction Z relative to the base 1. A first magnetic attraction force can be generated between the first magnetic member 32 and the first magnetic attraction member 81. The first magnetic attraction force can be decomposed into a magnetic attraction component along the X-axis direction and a magnetic attraction component along the Z-axis direction. The magnetic attraction component along the X-axis direction in the first magnetic attraction force can enable the groove wall of the first slide groove 211 and the groove wall of the second slide groove 212 of the bracket 2 to be close to the first slide shaft 61 and the second slide shaft 62, thereby ensuring the movement stability of the bracket 2 sliding along the first direction Z relative to the base 1. The first magnetic member 32 can also generate a second magnetic attraction force with the second magnetic attraction member 82. The second magnetic attraction force can be decomposed into a magnetic attraction component along the X-axis direction and a magnetic attraction component along the Z-axis direction. The magnetic attraction component of the second magnetic attraction force along the X-axis direction can also enable the groove walls of the first slide groove 211 and the groove walls of the second slide groove 212 of the bracket 2 to be in close contact with the first slide shaft 61 and the second slide shaft 62. The magnetic attraction component of the second magnetic attraction member 82 and the first magnetic member 32 along the X-axis direction can be mainly used to enable the bracket 2 to be in close contact with the sliding member 6 when the bracket 2 moves between the first position and the second position.

[0116] It is understood that when the bracket 2 moves between the first position and the second position, the overlap area between the projection of the first magnetic member 81 on the plane where the first magnetic member 32 is located and the first magnetic member 32 is relatively small, and the magnetic attraction force between the first magnetic member 81 and the first magnetic member 32 along the X-axis direction is relatively small, making it easy for the bracket 2 to separate from the sliding member 6, thereby affecting the movement stability of the bracket 2. In this embodiment, a second magnetic member 82 is also provided on the base 1, and the second magnetic member 82 is arranged closer to the first platform 121 of the base 1 relative to the first magnetic member 81. In this way, when the bracket 2 moves between the first position and the second position, a magnetic attraction force along the X-axis direction can be generated between the second magnetic member 82 and the first magnetic member 32, allowing the bracket 2 to remain in close contact with the sliding member 6 when moving between the first position and the second position, thereby improving the movement stability of the bracket 2. In other embodiments, when the bracket 2 is in the first position, the coil 31 and the first magnetic member 32 can also be completely staggered, that is, the projection of the first magnetic member 32 on the plane where the coil 31 is located does not overlap with the coil 31.

[0117] In some embodiments, the frame portion 11 may further be provided with a second avoidance groove 114. The opening of the second avoidance groove 114 may face away from the second avoidance space 1a. The second magnetic member 82 may be fixed to the second avoidance groove 114. In this way, by providing the second avoidance groove 114, the second magnetic member 82 fixed to the second avoidance groove 114 may be closer to the second avoidance space 1a, that is, the distance between the second magnetic member 82 and the second avoidance space 1a is closer, which is beneficial to increase the magnetic attraction force generated along the X-axis direction between the second magnetic member 82 and the first magnetic member 32, thereby preventing the bracket 2 from detaching from the sliding member 6 when moving.

[0118] Exemplarily, the projection of the second avoidance space 1a along the first direction Z can cover the first part 21 of the bracket 2. The second part 22 of the bracket 2 can be arranged opposite to the second platform 123 of the bottom 12 of the base 1. The distance between the bracket 2 and the base 1 can be the distance between the surface of the first part 21 facing the first platform 121 and the first surface 1211 of the first platform 121. The first through hole 10a of the bracket 2 can be arranged opposite to the second through hole 10b of the base 1. The multiple columns 2211 of the bracket 2 can be arranged opposite to the contact portions 93 of the multiple first elastic members 9 in a one-to-one correspondence, that is, opposite to the elastic portion 9b of the first elastic member 9. The second end 1022 of the second elastic member 102 can be fixedly connected to the frame portion 11 of the base 1.

[0119] In some embodiments, only one end of the first elastic member 9 may be fixed to the fixing column 1232 , and the other end of the first elastic member 9 may be suspended relative to the base 1 and disposed opposite to the column 2211 of the bracket 2 .

[0120] In other embodiments, the coil 31 and the first magnetic member 32 may be swapped, that is, the coil 31 may be fixed to the bracket 2 , and the first magnetic member 32 may be fixed to the base 1 .

[0121] Figure 20 is a schematic cross-sectional view of the focus motor 10 shown in Figure 6 taken along line CC in one embodiment. Figure 21 is a schematic cross-sectional view of the focus motor 10 shown in Figure 6 from another perspective. Figure 22 is a schematic cross-sectional view of the focus motor 10 shown in Figure 6 taken along line DD in one embodiment. For ease of understanding, the focus motor 10 shown in Figure 21 conceals the housing 4.

[0122] As shown in Figures 20 to 22, the housing 4 can be fixedly connected to the base 1. The housing 4 and the base 1 can enclose an internal space of the focus motor 10. The bracket 2 can be located on the inner side of the housing 4. The housing 4 can be provided with a third through hole 41. The third through hole 41 can be connected to the first through hole 10a of the bracket 2. The third through hole 41 can partially expose the bracket 2. One end of the circuit board 101 can be fixedly connected to the frame 11 of the base 1, and the other end of the circuit board 101 can be fixedly connected to the housing 4. The circuit board 101 can be electrically connected to the coil 31 and the second elastic member 102. Among them, the circuit board 101 can be a soft circuit board, a hard circuit board, or a soft-hard combination circuit board.

[0123] For example, both the first position sensor 71 and the second position sensor 72 can be fixed to the circuit board 101 and electrically connected to the circuit board 101. The first position sensor 71 can be positioned opposite the second magnetic member 5. The first position sensor 71 can cooperate with the second magnetic member 5 to detect the magnetic field strength of the second magnetic member 5 at different positions of the bracket 2, thereby detecting the position of the bracket 2. The second position sensor 72 can be positioned toward the first side portion 113 of the base 1. The projection of the second position sensor 72 along the X-axis can partially cover the second avoidance space 1a. The second position sensor 72 can cooperate with the first magnetic member 32 to detect the magnetic field strength of the first magnetic member 32 at different positions of the bracket 2, thereby detecting the position of the bracket 2. The first position sensor 71 can be primarily used to detect the specific position of the bracket 2 within the focus stroke. The second position sensor 72 can be primarily used to detect the specific position of the bracket 2 within the eject stroke. In this way, both position sensors can detect the position of the bracket 2 throughout its entire stroke, thereby improving the control accuracy of the focus motor 10. In other embodiments, the focus motor 10 may not include the second position sensor 72.

[0124] In some embodiments, the focus motor 10 may further include a driver chip 103 (see FIG. 7 ). The driver chip 103 may be fixedly connected to the circuit board 101 and located inside the housing 4 .

[0125] FIG23 is a schematic diagram of a partial cross-section of the focus motor 10 shown in FIG20 , when the bracket 2 is in the first position. FIG24 is a schematic diagram of a partial cross-section of the focus motor 10 shown in FIG20 , when the bracket 2 is in the second position. FIG25 is a schematic diagram of a partial cross-section of the focus motor 10 shown in FIG20 , when the bracket 2 is in the third position.

[0126] Referring to Figures 23 to 25 , in conjunction with Figure 20 , when the bracket 2 is in the first position, the distance between the second bottom surface 312 of the coil 31 and the first top surface 32a of the first magnetic member 32 is a first distance D1. The distance between the second bottom surface 312 of the coil 31 and the first bottom surface 32b of the first magnetic member 32 is a second distance D2. The ratio of the first distance D1 to the second distance D2 can be less than 3. When the ratio of the first distance D1 to the second distance D2 is 1, that is, when the first distance D1 and the second distance D2 are equal, the center plane 32c of the first magnetic member 32 can be coplanar with the second bottom surface 312 of the coil 31. When the ratio of the first distance D1 to the second distance D2 is 0, that is, when the first distance D1 is equal to 0, the first top surface 32a of the first magnetic member 32 can be coplanar with the second bottom surface 312 of the coil 31. For example, the ratio of the first distance D1 to the second distance D2 can be less than 1. That is, the first distance D1 can be less than the second distance D2. At this time, the central surface 32 c of the first magnetic member 32 may be located on a side of the second bottom surface 312 of the coil 31 facing away from the second top surface 311 .

[0127] Exemplarily, when the bracket 2 is in the first position, the distance between the third bottom surface 812 of the first magnetic member 81 and the first top surface 32a of the first magnetic member 32 is the fifth distance D5. The distance between the third bottom surface 812 of the first magnetic member 81 and the first bottom surface 32b of the first magnetic member 32 is the sixth distance D6. The ratio of the fifth distance D5 to the sixth distance D6 can be less than 3. The distance between the first part 21 of the bracket 2 and the first platform 121 of the fixed bracket is the first height H1. The second avoidance space 1a of the base 1 can accommodate part of the first part 21 of the bracket 2, and at least part of the first magnetic member 32 fixed to the first part 21. The distance between the bracket 2 and the base 1 in the first direction Z is small.

[0128] At this time, the first magnetic member 32 and the coil 31 can be staggered in the first direction Z. The first magnetic member 32 and the first magnetic attraction member 81 can also be staggered in the first direction Z. The first magnetic member 32 can be arranged closer to the bottom 12 of the base 1 than the coil 31. The distance between the bracket 2 and the base 1 is small. The staggered setting can be a completely staggered setting, for example, the projection of the first magnetic member 32 on the plane where the coil 31 is located does not overlap with the coil 31. The staggered setting can also be a partially staggered setting, for example, the projection of the first magnetic member 32 on the plane where the coil 31 is located partially overlaps with the coil 31. For example, the first distance D1 can be smaller than the second distance D2. The fifth distance D5 can be smaller than the sixth distance D6. The first height H1 can be smaller than the second height H2. The center plane 32c of the first magnetic member 32 can be located on the side of the second bottom surface 312 of the coil 31 facing away from the second top surface 311. In this way, when the bracket 2 is in the first position, the distance between the first magnetic member 32 and the coil 31 in the first direction Z is large.

[0129] For example, when the bracket 2 is in the second position, the distance between the second bottom surface 312 of the coil 31 and the first top surface 32a of the first magnetic member 32 is a third distance D3. The distance between the second bottom surface 312 of the coil 31 and the first bottom surface 32b of the first magnetic member 32 is a fourth distance D4. The ratio of the third distance D3 to the fourth distance D4 can be greater than or equal to 3. The distance between the third bottom surface 812 of the first magnetic member 81 and the first top surface 32a of the first magnetic member 32 is a seventh distance D7. The distance between the third bottom surface 812 of the first magnetic member 81 and the first bottom surface 32b of the first magnetic member 32 is an eighth distance D8. The ratio of the seventh distance D7 to the eighth distance D8 can be greater than or equal to 3. The distance between the first portion 21 of the bracket 2 and the first platform 121 of the bracket 2 is a second height H2. The second height H2 can be greater than the first height H1. In the first direction Z, the center plane 32c of the first magnetic member 32 can be located between the second top surface 311 and the second bottom surface 312 of the coil 31. At this time, the distance between the bracket 2 and the base 1 in the first direction Z is relatively large.

[0130] For example, when the bracket 2 is in the third position, the first magnetic member 32 can be arranged facing the coil 31. The distance between the second bottom surface 312 of the coil 31 and the first top surface 32a of the first magnetic member 32 can be greater than or equal to the third distance D3. The distance between the third bottom surface 812 of the first magnetic member 81 and the first top surface 32a of the first magnetic member 32 can be greater than or equal to the seventh distance D7. The distance between the first portion 21 of the bracket 2 and the first platform 121 of the bracket 2 is a third height H3. The third height H3 can be greater than or equal to the second height H2.

[0131] For example, during the movement of the bracket 2 from the first position to the second position, the coil 31 can input a first current. At this time, the electromagnetic force generated between the coil 31 and the first magnetic member 32 serves as the first driving force. The first magnetic attraction force generated between the first magnetic member 32 and the first magnetic member 81 can be decomposed into a magnetic attraction component along the X-axis direction and a magnetic attraction component along the first direction Z. At this time, the magnetic attraction component along the first direction Z generated between the first magnetic member 81 and the first magnetic member 32 can also serve as a second driving force, and together with the first driving force, is used to drive the bracket 2 to slide relative to the base 1 along the first direction Z, so that the bracket 2 moves from the first position to the second position. The first portion 21 of the bracket 2 can gradually slide out of the second avoidance space 1a of the base 1. During the movement of the bracket 2 from the second position to the third position, the coil 31 can input a second current. The direction of the second current is opposite to that of the first current. At this time, the first driving force generated between the coil 31 and the first magnetic member 32 can drive the bracket 2 to move within the focusing stroke to perform focusing. In the process of the bracket 2 moving from the first position to the third position, the distance between the first portion 21 of the bracket 2 and the first platform 121 of the base 1 gradually increases.

[0132] Among them, the second position can also be called the reversing position. When the bracket 2 moves from the first position to the second position, the current of the coil 31 at this time needs to be reversed, that is, the coil 31 inputs the first current in the process of the bracket 2 moving from the first position to the second position, and the coil 31 inputs the second current in the process of the bracket 2 moving from the second position to the third position. Exemplarily, the second position can be a position where the electromagnetic force between the coil 31 and the first magnetic member 32 is 0, or a position where the resultant force of the first driving force and the second driving force is 0, or any position between the above two positions. In this way, in the process of the bracket 2 moving from the first position to the third position, the resultant direction of the first driving force and the second driving force can always point to the positive direction of the first direction Z, so as to always drive the bracket 2 to move in the direction away from the base 1 (that is, the positive direction of the first direction Z in this embodiment), so that the bracket 2 can move from the first position to the third position.

[0133] It will be appreciated that when the focus motor 10 in this embodiment is in its non-operating state, the distance between the bracket 2 and the base 1 is relatively small, resulting in a closer distance between the first optical element 20 and the second optical element 30 (see FIG5 ). This facilitates reducing the overall height of the focus assembly to meet the thinness requirements of the electronic device 1000. When the focus motor 10 is in operation, the drive mechanism 3 can first drive the bracket 2 to move relative to the base 1 in the first direction Z, moving the bracket 2 from the first position to the second position, thereby gradually increasing the distance between the bracket 2 and the base 1 in the first direction Z and completing the ejection operation before focusing. Then, when the bracket 2 is in the second position, the current direction of the coil 31 is changed, allowing the bracket 2 to continue sliding in the first direction Z, increasing the distance between the bracket 2 and the base 1 in the first direction Z. This also allows the first optical element 20 mounted on the bracket 2 to enter the focus travel range, thereby switching the focus motor 10 from the non-operating state to the focus state for focusing operation. After the direction of the current in the coil 31 changes, the drive mechanism 3 can continue to drive the bracket 2 to move from the second position to the third position, so that the focus of the optical system can be located on the imaging plane, achieving optical focus. The force exerted by the drive mechanism 3 on the bracket 2 is the electromagnetic force (i.e., the first driving force) generated between the coil 31 and the first magnetic member 32. As the bracket 2 moves from the first position to the third position, the distance between the bracket 2 and the base 1 in the first direction Z gradually increases. Thus, when the focus motor 10 is applied to the electronic device 1000, when the focus motor 10 is not working (i.e., when the focus motor 10 is in a non-working state), the distance between the bracket 2 and the base 1 in the first direction Z is small, resulting in a lower overall height of the focus motor 10. When the focus motor 10 is working (i.e., when the focus motor 10 is in a focusing state), the drive mechanism 3 can first drive the bracket 2 to cause the first optical element 20 to pop out a certain distance relative to the base 1 (i.e., move from the first position to the second position), so that the first optical element 20 enters the focusing stroke section. After the first optical element 20 enters the focusing stroke section, by changing the current direction of the coil 31, the driving mechanism 3 can also drive the bracket 2 to drive the first optical element 20 to move from the second position to the third position, thereby achieving optical focus and meeting the requirements of telephoto shooting scenes. In other words, the focus motor 10 in this embodiment is a pop-up focus motor 10, which can meet the requirements of long-focus shooting scenes while having a relatively small height to take into account the thinness requirements. At the same time, the focus motor 10 in this embodiment is only provided with one set of driving mechanisms 3. By changing the current direction of the coil 31, it can simultaneously realize the driving bracket 2 to pop out (that is, move from the first position to the second position), and realize the driving bracket 2 to move within the focusing stroke section to achieve focusing (that is, move from the second position to the third position). The structural setting is relatively simple, which is conducive to the miniaturization of the focus motor 10.

[0134] Secondly, the focus motor 10 in this embodiment also includes a first magnetic member 81, which can be fixed to the base 1 and arranged opposite the coil 31. The first magnetic member 81 can generate a first magnetic attraction force with the first magnetic member 32. On the one hand, the magnetic attraction between the first magnetic member 81 and the first magnetic member 32 can keep the bracket 2 in close contact with the slider 6, improving the stability of the bracket 2. On the other hand, the magnetic attraction between the first magnetic member 81 and the first magnetic member 32 can also serve as a second driving force, working together with the first driving force to drive the bracket 2 to slide relative to the base 1. In this way, the first magnetic member 81 can achieve "multiple uses", which helps reduce the number of internal components of the focus motor 10 and save internal space. At the same time, the first and second driving forces act together on the bracket 2, which helps increase the speed at which the bracket 2 moves from the first position to the second position, improve the operating response speed of the focus motor 10, and enhance the user experience.

[0135] In addition, the bottom 12 of the base 1 in this embodiment includes a first platform 121, a connecting portion 122, and a second platform 123. The connecting portion 122 can be connected between the first platform 121 and the second platform 123. Both the first platform 121 and the second platform 123 can be connected to the frame 11 of the base 1. The first platform 121 and the second platform 123 have a height difference in the thickness direction of the focus motor 10. The first platform 121, the connecting portion 122, and the frame 11 can enclose a second escape space 1a. The second platform 123 and the connecting portion 122 can also enclose a third escape space 1b. The second escape space 1a and the third escape space 1b are spaced apart. The bracket 2 includes a first portion 21 and a second portion 22, which are arranged at an angle. When the bracket 2 is in the first position, the first escape space 2a can accommodate a portion of the second platform 123, and the second escape space 1a can accommodate a portion of the first portion 21 of the bracket 2. When the bracket 2 moves from the first position to the second position, the first portion 21 can gradually slide out of the second escape space 1a. The third relief space 1b of the base 1 can be used to accommodate the second optical element 30 and / or the photosensitive component 50 (see Figure 5 ). Thus, the second relief space 1a and the third relief space 1b can reuse the thickness dimension of the focus motor 10, making the overall structure of the focus motor 10 more compact and facilitating a thinner design of the focus motor 10.

[0136] In some embodiments, when the bracket 2 is in the second position, in the first direction Z, the first bottom surface 32b of the first magnetic member 32 can be located on the side of the second magnetic member 82 facing the first magnetic member 81. The projection of the first magnetic member 32 on the plane where the second magnetic member 82 is located does not overlap with the second magnetic member 82. In this way, when the bracket 2 is in the focusing stroke section, the first magnetic member 32 can be completely staggered with the second magnetic member 82, thereby preventing the second magnetic member 82 from generating a magnetic attraction force on the first magnetic member 32 when the focus motor 10 is performing the focusing operation, thereby preventing the focus motor 10 from interfering with the focusing operation of the bracket 2, thereby improving the movement accuracy of the focus motor 10.

[0137] In some embodiments, as shown in FIG18 , when the bracket 2 is in the first position, the length of the second elastic member 102 can be the first length. When the bracket 2 is in the second position, the length of the second elastic member 102 can be the second length. The first length can be greater than the second length. In other words, when the bracket 2 is in the first position, the second elastic member 102 can be in an extended state. At this time, the second elastic member 102 can apply a force to the bracket 2 to drive the bracket 2 to move along the first direction Z, so that the bracket 2 moves from the first position to the second position. In this way, on the one hand, the second elastic member 102 can be used to power the variable aperture 40 (see FIG3 ), and on the other hand, the elastic force of the second elastic member 102 can also be used to assist in driving the bracket 2 to move from the first position to the second position. The second elastic member 102 can achieve "one thing for multiple uses", which is conducive to simplifying the structural setting of the focus motor 10.

[0138] In some embodiments, as shown in FIG. 7 , the driver chip 103 of the focus motor 10 may be pre-input with information related to the second position so as to issue a control signal to reverse the direction of the current in the coil 31. For example, when the first position sensor 71 and / or the second position sensor 72 detects that the bracket 2 is in the second position, the driver chip 103 may issue a control signal to reverse the direction of the current in the coil 31, allowing the bracket 2 to continue moving in the positive direction of the first direction Z after reaching the second position.

[0139] In some embodiments, the camera module 100 may further include a lens cover (not shown) and a lens cover driving mechanism (not shown). When the bracket 2 is in the first position, the lens cover and the lens cover driving mechanism may also be used together to limit the bracket 2 of the focus motor 10, so as to prevent the bracket 2 from moving from the first position to the second position due to a force (e.g., a second driving force between the first magnetic member 81 and the first magnetic member 32) when the focus motor 10 does not need to perform focusing. For example, when the bracket 2 is in the first position, the lens cover can apply a force to the bracket 2 under the action of the lens cover driving mechanism to prevent the bracket 2 from moving from the first position to the second position.

[0140] FIG26 is a schematic diagram showing a partial cross-section of the focus motor 10 shown in FIG20 when the bracket 2 is in the ejected position.

[0141] As shown in Figures 23, 24, and 26, the process of the bracket 2 moving from the first position to the second position may also include an ejection position. When the bracket 2 is in the first position, the upright post 2211 of the bracket 2 can compress the elastic portion 9b of the first elastic member 9, causing it to extend. At this point, the first elastic member 9 can be in an extended state, or in a deformed state. When the bracket 2 moves from the first position to the second position, the first elastic member 9 can generate an elastic force in the first direction Z, which can act on the bracket 2 as a third driving force. In this case, the first, second, and third driving forces can collectively drive the bracket 2 to move relative to the base 1 in the first direction Z, from the first position to the ejection position. When the bracket 2 is in the ejection position, the first elastic member 9 can be in its original state. At this point, the upright post 2211 of the bracket 2 is in contact with the first elastic member 9, generating no force between them. The elastic force of the first elastic member 9 is zero, and the force exerted by the first elastic member 9 on the bracket 2 is zero, meaning that the third driving force is zero. When the first magnetic member 32 moves from the reversing position to the second position, the first elastic member 9 can be disengaged from the column 2211 of the bracket 2. At this time, the force exerted by the first elastic member 9 on the bracket 2 is still 0, that is, the third driving force is 0. In this embodiment, the number of first elastic members 9 is three. The three first elastic members 9 can be evenly distributed about the second through hole 10b (please refer to Figure 20). In this way, on the one hand, the provision of multiple first elastic members 9 is conducive to increasing the driving force for the bracket 2 to move from the first position to the pop-up position, so that the bracket 2 can move quickly to the pop-up position. On the other hand, the uniform distribution of multiple first elastic members 9 is conducive to improving the movement stability of the bracket 2.

[0142] It will be appreciated that the focus motor 10 of this embodiment may further include a first elastic member 9. The bottom 12 of the base 1 may be provided with a fixing post 1232. The fixing portion 9a of the first elastic member 9 may be fixed to the fixing post 1232, while the elastic portion 9b of the first elastic member 9 may be suspended relative to the bottom 12 of the base 1. The bracket 2 may be provided with a post 2211 disposed opposite the first elastic member 9. During the movement of the bracket 2 from the first position to the second position, a pop-up position may also be included. When the bracket 2 is in the first position, the post 2211 of the bracket 2 may compress the portion of the first elastic member 9 suspended relative to the base 1. In this state, the first elastic member 9 is in an extended state, i.e., a deformed state. When the bracket 2 moves from the first position to the second position, the first elastic member 9 may release its elastic force, which may act on the bracket 2 as a third driving force. This third driving force, together with the first driving force, may be used to drive the bracket 2 to slide in the first direction Z relative to the base 1, thereby moving the bracket 2 from the first position to the pop-up position. When the bracket 2 moves from the ejection position to the second position, the first elastic member 9 disengages from the upright 2211 of the bracket 2, and the force exerted by the first elastic member 9 on the bracket 2 is zero, i.e., the third driving force is zero. Thus, while the ejection stroke length of the focus motor 10 remains constant, the provision of the first elastic member 9 to assist in driving the bracket 2 from the first position to the ejection position helps improve the operational response speed of the focus motor 10. While the first driving force of the drive mechanism 3 remains constant, the provision of the first elastic member 9 to assist in driving the bracket 2 to slide can also increase the ejection stroke length of the focus motor 10, helping to better meet the requirements of telephoto shooting scenarios.

[0143] In some embodiments, when the focus motor 10 is in a non-operating state and the bracket 2 is in the first position, an external force can be applied to the bracket 2 so that the bracket 2 can squeeze the first elastic member 9 and prevent the bracket 2 from moving under the action of the first elastic member 9, thereby maintaining the focus motor 10 in the non-operating state. The external force applied to the bracket 2 can be a force applied by the lens cover to the bracket 2. For example, the force applied by the lens cover to the bracket 2 can be the weight of the lens cover and / or the lens cover drive mechanism itself when the lens cover drive mechanism is not powered, and / or the resistance provided by the self-locking function within the lens cover drive mechanism, and / or the resistance provided by the cogging torque of the motor within the lens cover drive mechanism. In other embodiments, the force applied by the lens cover to the bracket 2 can also be the driving force applied to the lens cover when the lens cover drive mechanism is powered.

[0144] In other embodiments, the first elastic member 9 may also be a coil spring. When the bracket 2 is in the first position, the bracket 2 can squeeze the first elastic member 9 under an external force (e.g., through the lens cover and the lens cover drive mechanism, which jointly apply a force to the bracket 2), and the first elastic member 9 can be in a compressed state. When the bracket 2 is in the second position, the bracket 2 can be in contact with the first elastic member 9, and no force is generated between the two. At this time, the first elastic member 9 is in its original state.

[0145] It should be noted that, in the absence of conflict, the 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 scope of protection of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0146] It should be noted that all the above drawings are for illustrative purposes only and do not represent the actual size of the product. Furthermore, the dimensional ratios between the components in the drawings are not intended to limit the actual product of the present application.

[0147] The above are only some of the embodiments of this application, and the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A focus motor (10), characterized in that: include: Base (1); a bracket (2) slidably connected to the base (1), the bracket (2) being used to mount a first optical element (20); as well as A driving mechanism (3) comprising a coil (31) and a first magnetic member (32), wherein one of the coil (31) and the first magnetic member (32) is fixed to the base (1), and the other is fixed to the bracket (2), and the coil (31) cooperates with the first magnetic member (32) to drive the bracket (2) to move relative to the base (1) along a first direction (Z), wherein the first direction (Z) is the optical axis direction of the first optical element (20); The driving mechanism (3) is used to drive the bracket (2) to move from a first position to a second position, so that the focus motor (10) switches from a non-working state to a focus state, and the driving mechanism (3) is also used to drive the bracket (2) to move from the second position to a third position; When the bracket (2) moves from the first position to the second position, the coil (31) inputs a first current; when the bracket (2) moves from the second position to the third position, the coil (31) inputs a second current; the first current and the second current have opposite current directions; and when the bracket (2) moves from the first position to the third position, the distance between the bracket (2) and the base (1) in the first direction (Z) gradually increases.

2. The focus motor (10) according to claim 1, characterized in that The first magnetic member (32) comprises a first top surface (32a) and a first bottom surface (32b) disposed opposite to each other along the first direction (Z); the coil (31) comprises a second top surface (311) and a second bottom surface (312) disposed opposite to each other along the first direction (Z); when the bracket (2) is in the first position, the distance between the second bottom surface (312) and the first top surface (32a) is a first distance (D1); the distance between the second bottom surface (312) and the first bottom surface (32b) is a second distance (D2); and the ratio of the first distance (D1) to the second distance (D2) is less than 3; When the bracket (2) is in the second position, the distance between the second bottom surface (312) and the first top surface (32a) is a third distance (D3), the distance between the second bottom surface (312) and the first bottom surface (32b) is a fourth distance (D4), and the ratio of the third distance (D3) to the fourth distance (D4) is greater than or equal to 3; When the bracket (2) is in the third position, the distance between the second bottom surface (312) and the first top surface (32a) is greater than or equal to the third distance (D3).

3. The focus motor (10) according to claim 2, characterized in that When the bracket (2) is in the first position, the first distance (D1) is smaller than the second distance (D2).

4. The focus motor (10) according to claim 2 or 3, characterized in that: The first magnetic member (32) further includes a center plane (32c) located between the first top surface (32a) and the first bottom surface (32b), wherein the distance between the center plane (32c) and the second bottom surface (312) of the coil (31) is equal to the distance between the center plane (32c) and the second top surface (311) of the coil (31); When the bracket (2) is in the first position, the center plane (32c) is located on the side of the second bottom surface (312) facing away from the second top surface (311); when the bracket (2) is in the second position, in the first direction (Z), the center plane (32c) is located between the second top surface (311) and the second bottom surface (312).

5. The focus motor (10) according to any one of claims 2 to 4, characterized in that: The first magnetic member (32) comprises a first magnet (321) and a second magnet (322) arranged in the first direction (Z), the polarity direction of the first magnet (321) and the polarity direction of the second magnet (322) are parallel and opposite, and the polarity direction of the first magnet (321) and the polarity direction of the second magnet (322) both intersect with the first direction (Z); When the bracket (2) is in the first position, the contact surface between the first magnet (321) and the second magnet (322) is located on the side of the second bottom surface (312) of the coil (31) facing away from the second top surface (311); when the bracket (2) is in the second position, in the first direction (Z), the contact surface between the first magnet (321) and the second magnet (322) is located between the second top surface (311) and the second bottom surface (312) of the coil (31).

6. The focus motor (10) according to any one of claims 1 to 5, characterized in that: The coil (31) is fixed to the base (1), and the first magnetic member (32) is fixed to the bracket (2). The focus motor (10) further includes a sliding member (6) and a first magnetic member (81). The sliding member (6) is fixed to the base (1), and the bracket (2) is slidably connected to the base (1) through the sliding member (6). The first magnetic member (81) is fixed to the base (1) and is located on the side of the coil (31) facing away from the first magnetic member (32). A first magnetic attraction force is generated between the first magnetic member (81) and the first magnetic member (32).

7. The focus motor (10) according to claim 6, characterized in that The first magnetic member (81) comprises a third bottom surface (812) and a third top surface (811) arranged opposite to each other along the first direction (Z); when the bracket (2) is in the first position, the distance between the third bottom surface (812) and the first top surface (32a) of the first magnetic member (32) is a fifth distance (D5); the distance between the third bottom surface (812) and the first bottom surface (32b) of the first magnetic member (32) is a sixth distance (D6); and the ratio of the fifth distance (D5) to the sixth distance (D6) is less than 3; When the bracket (2) is in the second position, the distance between the third bottom surface (812) and the first top surface (32a) is a seventh distance (D7), the distance between the third bottom surface (812) and the first bottom surface (32b) is an eighth distance (D8), and the ratio of the seventh distance (D7) to the eighth distance (D8) is greater than or equal to 3; When the bracket (2) is in the third position, the distance between the third bottom surface (812) and the first top surface (32a) is greater than or equal to the seventh distance (D7); The first magnetic attraction force is used to drive the bracket (2) to move from the first position to the second position.

8. The focus motor (10) according to claim 7, characterized in that When the bracket (2) is in the first position, the fifth distance (D5) is smaller than the sixth distance (D6).

9. The focus motor (10) according to any one of claims 6 to 8, characterized in that The focus motor (10) further includes a second magnetic member (82), which is fixed to the base (1). The second magnetic member (82) is arranged closer to the bottom (12) of the base (1) than the first magnetic member (81), and a second magnetic force is generated between the second magnetic member (82) and the first magnetic member (32).

10. The focus motor (10) according to claim 9, characterized in that When the bracket (2) is in the second position, in the first direction (Z), the first bottom surface (32b) of the first magnetic member (32) is located on the side of the second magnetic member (82) facing the first magnetic member (81).

11. The focus motor (10) according to any one of claims 1 to 10, characterized in that: The base (1) comprises a frame (11) and a bottom (12), the frame (11) is fixedly connected to the periphery of the bottom (12), the coil (31) is fixed to the frame (11), and the bracket (2) is located inside the frame (11) and is slidably connected to the frame (11); When the bracket (2) is in the first position, the distance between the bracket (2) and the bottom (12) is a first height (H1); when the bracket (2) is in the second position, the distance between the bracket (2) and the bottom (12) is a second height (H2); when the bracket (2) is in the third position, the distance between the bracket (2) and the bottom (12) is a third height (H3); the first height (H1) is less than the second height (H2), and the second height (H2) is less than or equal to the third height (H3).

12. The focus motor (10) according to claim 11, characterized in that The focus motor (10) further comprises a first elastic member (9), the first elastic member (9) being fixed to the bottom (12) and being arranged opposite to the bracket (2), the bracket (2) further comprising a pop-up position between the first position and the second position, when the bracket (2) is in the first position, the first elastic member (9) is in an extended state or a compressed state, and when the bracket (2) is in the pop-up position, the first elastic member (9) is in an original state; When the bracket (2) moves from the first position to the second position, the first elastic member (9) switches from the extended state or the compressed state to the original state to drive the bracket (2) to move from the first position to the pop-up position.

13. The focus motor (10) according to claim 12, characterized in that The first elastic member (9) is an elastic spring. The first elastic member (9) includes a fixed portion (9a) and an elastic portion (9b). The fixed portion (9a) is fixedly connected to the bottom (12). The elastic portion (9b) is suspended relative to the bottom (12) and is arranged relative to the bracket (2). When the bracket (2) is in the first position, the bracket (2) squeezes the elastic portion (9b). The first elastic member (9) is in the extended state. When the bracket (2) is in the pop-up position, the bracket (2) contacts the elastic portion (9b). The first elastic member (9) is in the original state. When the bracket (2) is in the second position, the bracket (2) and the elastic portion (9b) are spaced apart.

14. The focus motor (10) according to any one of claims 11 to 13, characterized in that: The bracket (2) comprises a first part (21) and a second part (22), the first part (21) being fixedly connected to an end of the second part (22), the first part (21) and the second part (22) being arranged at an angle, a first avoidance space (2a) being enclosed between the first part (21) and the second part (22), and the second part (22) being used for mounting the first optical element (20); The bottom portion (12) comprises a first platform (121), a connecting portion (122) and a second platform (123); the first platform (121) and the second platform (123) have a height difference in the first direction (Z); the connecting portion (122) is connected between the first platform (121) and the second platform (123); the first platform (121) is fixedly connected to the frame portion (11); at least a portion of the second platform (123) and at least a portion of the connecting portion (122) are spaced apart from the frame portion (11); the first platform (121), the connecting portion (122) and the frame portion (11) jointly enclose a second avoidance space (1a); and the second avoidance space (1a) is connected to the first avoidance space (2a); When the bracket (2) is in the first position, at least a portion of the first portion (21) is located in the second avoidance space (1a), and at least a portion of the second platform (123) is located in the first avoidance space (2a).

15. The focus motor (10) according to claim 14, characterized in that The second part (22) is provided with a first through hole (10a) for installing the first optical element (20), and the first through hole (10a) is connected to the first avoidance space (2a). The second platform (123) is provided with a second through hole (10b), and the second through hole (10b) is arranged opposite to the first through hole (10a) and is connected to the first through hole (10a). The connecting portion (122), the second platform (123) and the frame portion (11) together enclose a third avoidance space (1b), and the third avoidance space (1b) is spaced apart from the second avoidance space (1a). The third avoidance space (1b) is connected to the first avoidance space (2a) through the second through hole (10b), and the third avoidance space (1b) is used to accommodate the second optical element (30) and / or the photosensitive component (50).

16. The focus motor (10) according to any one of claims 11 to 15, characterized in that The focus motor (10) further comprises a circuit board (101), a second magnetic component (5) and a first position sensor (71), wherein the second magnetic component (5) is fixed to the bracket (2), the circuit board (101) is fixedly connected to the base (1), the first position sensor (71) is fixed to the circuit board (101) and is arranged opposite to the second magnetic component (5), and the first position sensor (71) is used to detect the position of the second magnetic component (5).

17. The focus motor (10) according to claim 16, characterized in that The focus motor (10) further includes a second position sensor (72), which is fixed to the circuit board (101). The second position sensor (72) is arranged closer to the bottom (12) of the base (1) than the first position sensor (71), and the second position sensor (72) is used to detect the position of the first magnetic member (32).

18. The focus motor (10) according to claim 16 or 17, characterized in that: The focus motor (10) further comprises a second elastic member (102), one end of the second elastic member (102) being fixedly connected to the base (1), and the other end of the second elastic member (102) being fixedly connected to the bracket (2); When the bracket (2) is in the first position, the length of the second elastic member (102) is a first length; when the bracket (2) is in the second position, the length of the second elastic member (102) is a second length, and the first length is greater than the second length.

19. A camera module (100), characterized in that: The invention comprises a first optical element (20) and a focus motor (10) according to any one of claims 1 to 17, wherein the first optical element (20) is mounted on the bracket (2).

20. The camera module (100) according to claim 19, characterized in that: The camera module (100) further includes a variable aperture (40), the variable aperture (40) being fixed to the bracket (2) and sleeved on the first optical element (20), the focus motor (10) further includes a second elastic member (102), the second elastic member (102) being conductive, one end of the second elastic member (102) being fixedly connected to the base (1) and electrically connected to the circuit board (101) of the focus motor (10), and the other end of the second elastic member (102) being fixedly connected to the bracket (2) and electrically connected to the variable aperture (40); When the bracket (2) is in the first position, the length of the second elastic member (102) is a first length; when the bracket (2) is in the second position, the length of the second elastic member (102) is a second length, and the first length is greater than the second length.

21. The camera module (100) according to claim 19 or 20, characterized in that: The camera module (100) further includes a photosensitive component (50), and the photosensitive component (50) is fixed to the light-emitting side of the focus motor (10).

22. An electronic device (1000), characterized in that The device comprises a device housing (200) and a camera module (100) according to any one of claims 19 to 21, wherein the camera module (100) is installed in the device housing (200).

Images