Motor, camera module and electronic equipment

Abstract

The embodiment of the invention provides a motor, a camera module and electronic equipment. The motor comprises a base; the stator assembly comprises a guide rod connected to the base, a lubricating medium layer is arranged on the outer wall of the guide rod, and the viscosity of the lubricating medium layer is related to the temperature; the rotor assembly is used for bearing the lens assembly, at least partially sleeves the guide rod, and is movably connected with the guide rod along the axial direction of the guide rod; wherein the guide rod is made of a resistance heating material, and under the condition that the guide rod is electrified, the temperature and the viscosity of the lubricating medium layer can be changed. In the embodiment of the invention, the guide rod is made of the resistance heating material, the guide rod can generate heat and raise the temperature under the condition that the guide rod is electrified, and the temperature and the viscosity of the lubricating medium layer are adjusted, so that the friction force between the mover assembly and the guide rod is adjusted, the mover assembly can smoothly move when the electronic equipment is in a low-temperature environment, and further, the service life of the electronic equipment is prolonged. The lens assembly can also smoothly move to a target position, and the use performance of the motor is ensured.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic equipment, and specifically relates to a motor, a camera module and an electronic equipment. Background Art

[0002] With the development of electronic equipment technology, slider motors are increasingly used in camera modules. In camera modules, slider motors are used to support lens components and drive the lens components to move, so as to achieve the focusing or anti-shake function of the camera module.

[0003] However, in some low-temperature working environments, the slider motor is prone to insufficient driving force when driving the lens assembly to move, making it difficult for the lens assembly to move to the target position, resulting in abnormal focusing or anti-shake functions, affecting the shooting performance of the electronic device and the user's shooting experience. Summary of the invention

[0004] The present application aims to provide a motor, a camera module and an electronic device to solve the problem of insufficient driving force of the motor on the lens assembly in a low temperature environment.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, the present application discloses a motor, comprising:

[0007] Base;

[0008] The stator assembly comprises a guide rod connected to the base, the outer wall of the guide rod is provided with a lubricating medium layer, and the viscosity of the lubricating medium layer is related to the temperature;

[0009] A movable subassembly, used for carrying the lens assembly, at least partially sleeved on the guide rod, and movably connected to the guide rod along the axial direction of the guide rod;

[0010] Wherein, the guide rod is made of a resistance heating material. When the guide rod is energized, the temperature and viscosity of the lubricating medium layer can be changed to adjust the friction between the mover assembly and the guide rod.

[0011] In a second aspect, the present application further discloses a camera module, which includes: a lens assembly, and a motor as described in any of the above items, wherein the lens assembly is connected to the movable subassembly.

[0012] In a third aspect, the present application further discloses an electronic device, which includes: the camera module as described above.

[0013] In the embodiment of the present application, since at least a portion of the movable subassembly is sleeved on the guide rod and movably connected to the guide rod, the lubricating medium layer arranged on the outer wall of the guide rod can reduce the friction of the relative movement between the movable subassembly and the guide rod, thereby reducing the driving force required for the movement of the movable subassembly; further, since the guide rod is made of a resistive heating material, when the guide rod is energized, the guide rod can generate heat and increase its temperature, and adjust the temperature and viscosity of the lubricating medium layer arranged on the outer wall of the guide rod, thereby adjusting the friction between the movable subassembly and the guide rod. When the friction between the movable subassembly and the guide rod changes, the driving force of the movable subassembly can be adjusted, so that when the electronic device is in a low-temperature environment, the movable subassembly can also move smoothly along the axial direction of the guide rod. Furthermore, the lens assembly carried by the movable subassembly can also move smoothly to the target position, thereby ensuring the performance of the motor.

[0014] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 is an exploded schematic diagram of a motor in an embodiment of the present application;

[0017] Figure 2 is a cross-sectional view of a motor in an embodiment of the present application;

[0018] Figure 3 is a schematic structural diagram of a stator assembly in an embodiment of the present application;

[0019] Figure 4 It is a schematic diagram of the structure of the mover assembly in the embodiment of the present application.

[0020] Figure numerals: 10 - base, 11 - electrical connection part, 20 - stator assembly, 21 - guide rod, 22 - coil, 30 - mover assembly, 31 - carrier, 311 - connection part, 32 - magnetic part, 40 - temperature sensor. DETAILED DESCRIPTION

[0021] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0022] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0024] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] With the development of electronic equipment technology, various types of electronic equipment have been integrated into people's lives. Users often need to use the shooting function of electronic equipment to record their lives and work. At the same time, users have higher and higher requirements for the shooting performance of electronic equipment. The camera module in the electronic equipment usually includes a motor and a lens assembly. The motor carries the lens assembly and drives the lens assembly to move. The movement of the lens assembly can realize the focus or anti-shake function of the camera module.

[0026] Specifically, in the slide bar motor, a carrier is provided to carry the lens assembly and a slide bar, and the carrier is movably connected to the slide bar to realize the movement of the lens assembly. A lubricating medium is applied between the carrier and the slide bar to ensure the smooth movement of the carrier.

[0027] Under this structure, when the electronic device is in a low-temperature environment, the viscosity of the lubricating medium decreases, which will affect the lubrication effect between the carrier and the slide rod, thereby increasing the friction of the relative movement between the two, causing the slide rod motor to easily have insufficient driving force when driving the lens assembly to move, making it difficult for the lens assembly to move to the target position, resulting in abnormal focus or anti-shake function, affecting the shooting performance of the electronic device and the user's shooting experience.

[0028] Based on the above reasons, an embodiment of the present application provides a motor, which, by setting the guide rod to be made of a resistive heating material, allows the motor to adjust the driving force of the lens assembly when the guide rod is energized, so that the lens assembly can move smoothly to the target position to meet the focus or anti-shake function of the camera module in a low temperature environment.

[0029] The motor provided in the embodiment of the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] like Figures 1 to 4 As shown, the motor provided in the embodiment of the present application may specifically include: a base 10; a stator assembly 20, including a guide rod 21 connected to the base 10, the outer wall of the guide rod 21 is provided with a lubricating medium layer, the lubricating medium layer is formed by a lubricating medium coated on the outer wall of the guide rod 21, and the viscosity of the lubricating medium in the lubricating medium layer is related to the temperature.

[0031] And the movable subassembly 30 is used to carry the lens assembly, which is at least partially mounted on the guide rod 21 and movably connected to the guide rod 21 along the axial direction of the guide rod 21. The guide rod 21 guides the movement of the movable subassembly 30. When the movable subassembly 30 moves along the axial direction of the guide rod 21, the lens assembly carried by the movable subassembly 30 can move accordingly, thereby realizing the focus or anti-shake function of the camera module.

[0032] The guide rod 21 is made of a resistance heating material. When the guide rod 21 is energized, the temperature and viscosity of the lubricating medium layer can be changed to adjust the friction between the mover assembly 30 and the guide rod 21 .

[0033] Optionally, the base 10 is a rectangular structure with four vertices, the number of guide rods 21 can be set to multiple, multiple guide rods 21 can be arranged at intervals on the edge of the base 10, and at least part of the mover assembly 30 can be simultaneously sleeved on multiple guide rods 21 to ensure that the guide rods 21 guide each position of the mover assembly 30 more evenly, so that the movement of the lens assembly is more stable. Figure 1 As shown, in the embodiment of the present application, the number of the guide rods 21 is set to four, and the four guide rods 21 are respectively located at the four corners of the base 10 to provide a more uniform guiding effect on the mover assembly 30.

[0034] In an optional embodiment of the present application, the viscosity of the lubricating medium decreases as the temperature increases. Therefore, when the lubricating medium is heated, the temperature of the lubricating medium can be increased to reduce the viscosity of the lubricating medium. On this basis, the guide rod 21 can be energized. After the guide rod 21 is energized, due to the characteristics of its resistive heating material, its own temperature increases, thereby maintaining the temperature of the guide rod 21 not lower than the working temperature of the lubricating medium, and at the same time heating the lubricating medium in the lubricating medium layer provided on the outer wall of the guide rod 21. As the temperature of the lubricating medium increases, the viscosity decreases, thereby reducing the friction between the guide rod 21 and the mover assembly 30. Furthermore, when the friction between the guide rod 21 and the mover assembly 30 is reduced, the driving force of the motor on the mover assembly 30 can be guaranteed, thereby ensuring that the lens assembly moves smoothly to the target position, and realizing the focus or anti-shake function of the camera module.

[0035] Among them, the lubricating medium layer can include various types of lubricating media such as lubricating oil, grease, etc. The guide rod 21 is made of resistive heating material, and the resistive heating material can include one or more of nickel-chromium alloy, iron-chromium alloy, silicon carbon rod, silicon-molybdenum rod, zirconium diboride, etc. The present application does not specifically limit the type of lubricating medium contained in the lubricating medium layer and the type of resistive heating material.

[0036] In actual applications, when the lens assembly of the electronic device performs the shooting function, the motor starts working. A temperature sensor 40 can be set in the motor to sense the temperature of the environment in which the guide rod 21 is located. When the temperature is lower than the normal working temperature of the lubricating medium layer (for example, >10°C), in order to ensure the good lubrication properties of the motor lubricating oil of the guide rod 21, the guide rod 21 can be energized to heat the lubricating medium in the lubricating medium layer, so that the lubricating medium on the surface of the guide rod 21 is always within the operating temperature range, ensuring the lubrication properties of the lubricating medium, so that the motor can still work normally even in a low temperature environment.

[0037] Optionally, the guide rod 21 has a hollow cavity extending axially, and the motor also includes a coil 22 and a magnetic part 32, and the coil 22 and the magnetic part 32 interact with each other to generate a driving force for the movable subassembly 30, wherein one of the coil 22 and the magnetic part 32 is embedded in the hollow cavity, and the other of the coil 22 and the magnetic part 32 is mounted on the guide rod 21 and movably connected to the guide rod 21 along the axial direction of the guide rod 21.

[0038] Specifically, the guide rod 21 is a cylindrical structure supported by a resistor sheet, and the thickness and height of the resistor sheet can be designed according to the size of the specific camera module and the performance requirements of the lens assembly. For example, the thickness of the resistor sheet can be 0.1 mm and the height can be 10.4 mm.

[0039] When current passes through the coil 22, a magnetic field is generated, and the magnetic part 32 generates a driving force under the action of the magnetic field force, so that the coil 22 and the magnetic part 32 move relative to each other. In the embodiment of the present application, when one of the coil 22 and the magnetic part 32 is embedded in the hollow cavity, the position of the coil 22 and the magnetic part 32 is relatively fixed with respect to the guide rod 21 and becomes a part of the stator assembly 20, while the other of the coil 22 and the magnetic part 32 is sleeved on the outer wall of the guide rod 21 and movably connected with the guide rod 21 to become a part of the mover assembly 30. Since the coil 22 and the magnetic part 32 are respectively located outside and inside the guide rod 21, in fact, the coil 22 and the magnetic part 32 are relatively arranged along the radial direction of the guide rod 21.

[0040] In actual application, the coil 22 is energized, and the current passing through the coil 22 generates a magnetic field, and the magnetic field generated by the coil 22 interacts with the magnetic field formed by the magnetic member 32 itself to generate thrust. When the coil 22 is embedded in the guide rod 21 and becomes a part of the stator assembly 20, the magnetic member 32 can move along the axial direction of the guide rod 21. On the contrary, when the magnetic member 32 is embedded in the guide rod 21, the coil 22 moves.

[0041] It should be noted that in order to meet users' high requirements for the shooting performance of electronic devices, one way to achieve this is to increase the volume of the lens assembly in the camera module. When the volume of the lens assembly increases, the weight of the lens assembly will increase synchronously, which requires the motor's driving force on the lens assembly to increase synchronously in order to meet the movement requirements of the large-volume lens assembly. To increase the driving force of the motor on the lens assembly, one way to achieve this is to increase the volume of the motor, but this will lead to an increase in the overall structural size of the camera module. If the overall size of the electronic device does not change, it will have an adverse effect on the layout of the space of the electronic device and affect the structural design of the electronic device; but if the size of the electronic device is increased, it will not meet the user's pursuit of miniaturization and portability of electronic devices.

[0042] The above-mentioned motor provided in the embodiment of the present application has one of the coil 22 and the magnetic part 32 arranged inside the guide rod 21, and the other of the coil 22 and the magnetic part 32 is loosely matched with the guide rod 21, thereby reducing the gap between the two and helping to improve the driving force generated by the interaction between the two, thereby improving the driving performance of the motor and making the overall structure of the motor more compact, which is convenient for the overall layout of the electronic equipment and adapts to the trend of miniaturization and lightweight of electronic equipment.

[0043] In one embodiment of the present application, the coil 22 is a columnar structure and is embedded in the hollow cavity, and the magnetic member 32 is a tubular structure and is sleeved on the guide rod 21, wherein along the axial direction of the guide rod 21, the size of the coil 22 is larger than the size of the magnetic member 32.

[0044] Furthermore, the motor also includes a shell, which is connected to the base 10, and a plurality of guide rods 21 are connected between the shell and the base 10 at intervals. Since the guide rods 21 and the shell are fixedly connected to the base 10, the guide rods 21 and the shell are both part of the stator assembly 20.

[0045] It should be noted that making the coil 22 into a columnar structure can increase the volume of the coil 22 to a certain extent, so that the cross-sectional area of ​​the coil 22 used to generate driving force with the magnet is increased, thereby improving the driving force of the motor; and the magnetic part 32 is sleeved on the outer wall of the guide rod 21, so that the distance between the magnetic part 32 and the coil 22 is reduced, which also helps to increase the electromagnetic force generated by the interaction between the coil 22 and the magnetic part 32, thereby improving the driving force of the motor, thereby improving the driving force of the motor on the lens assembly, ensuring that the lens assembly can move smoothly to the target position, so as to realize the focus or anti-shake function of the camera module.

[0046] Optionally, along the axial direction of the guide rod 21, the hollow cavity passes through the guide rod 21, and the coil 22 extends from one end of the hollow cavity to the other end of the hollow cavity, so that the size of the coil 22 can be increased to enhance the strength of the magnetic field generated by the coil 22 and improve the driving efficiency and response speed of the motor.

[0047] It is understandable that the through-hole design of the hollow cavity enables the coil 22 to more fully utilize the space inside the guide rod 21, thereby allowing the use of a longer coil 22 or a coil 22 with more turns, thereby enhancing the strength and uniformity of the electromagnetic field, and improving the driving force and response speed of the motor. In addition, when the coil 22 extends from one end of the hollow cavity to the other end of the hollow cavity, since the hollow cavity passes through the guide rod 21, the two ends of the coil 22 along the axial direction of the guide rod 21 are respectively abutted against the base 10 and the shell, reducing the possibility of loosening or damage of the coil 22 due to vibration or impact, and further ensuring the stability of the position of the coil 22, ensuring the stability of the magnetic field, and preventing the instability of the force between the coil 22 and the magnetic member 32 due to the displacement of the coil 22, thereby improving the stability and reliability of the motor driving the lens assembly.

[0048] At the same time, the coil 22 is completely embedded in the guide rod 21, which can enhance the durability of the motor, avoid direct contact between the coil 22 and the external environment, and reduce the risk of failure of the motor caused by impurities such as dust.

[0049] Optionally, the movable subassembly 30 further includes a carrier 31 , the carrier 31 is used to carry the lens assembly, and the magnetic member 32 is fixedly connected to the outer wall of the carrier 31 .

[0050] Specifically, the carrier 31 is a frame structure and is arranged in the middle of the guide rods 21 at the four corners. It has a cylindrical accommodating cavity inside for carrying the lens assembly. The magnetic part 32 can be fixedly connected to the outer wall of the carrier 31 by bonding or welding. In actual applications, the magnetic part 32 can be connected to the carrier 31 by dispensing glue, which simplifies the assembly process of the motor, facilitates operation, and improves production efficiency.

[0051] In practical applications, the magnetic member 32 is disposed on the outer wall of the carrier 31, so that the relative movement between the magnetic member 32 and the coil 22 on the guide rod 21 is more direct and efficient. When the motor is working, the magnetic field generated by the coil 22 being energized can act more effectively on the magnetic member 32, thereby driving the mover assembly 30 to move axially along the guide rod 21. This design not only improves the driving force and response speed of the motor, but also helps to reduce energy consumption and improve the overall performance of the motor.

[0052] Furthermore, a connecting portion 311 is provided on the outer wall of the carrier 31 , and the magnetic member 32 is connected to the connecting portion 311 , wherein the peripheral surface of the magnetic member 32 is adapted to the shape of the connecting portion 311 to ensure the contact area between the magnetic member 32 and the connecting portion 311 .

[0053] Specifically, in the embodiments of the present application, Figure 1 , Figure 4 As shown, the connection part 311 is an arc-shaped recessed part that is concave radially toward the center of the carrier 31 along the internal accommodating cavity of the carrier 31, and the recessed part has a recessed surface. The magnetic member 32 is a cylindrical structure, and the circumference of the magnetic member 32 is adapted to the shape of the connection part 311, which means that the diameter of the cylindrical structure of the magnetic member 32 is the same as the diameter of the arc-shaped recessed part, so that the magnetic member 32 and the connection part 311 can fit tightly, thereby increasing the contact area between the magnetic member 32 and the connection part 311 and ensuring the connection strength between the two. When the magnetic member 32 moves along the axial direction of the guide rod 21, the indirect driving effect of the magnetic member 32 on the carrier 31 can be enhanced, thereby ensuring the reliability of the movement of the carrier 31 and ensuring the driving effect on the movement of the lens assembly.

[0054] It should be noted that, in practical applications, the shapes of the magnetic members 32 vary, and the shape and size of the connecting portion 311 can also be designed according to actual needs to accommodate magnetic members 32 of different specifications and types.

[0055] Optionally, the base 10 is provided with an electrical connection portion 11 , and the electrical connection portion 11 is electrically connected to the guide rod 21 so as to energize the guide rod 21 through the base 10 .

[0056] Specifically, the electrical connection part 11 is a welding foot, and the guide rod 21 is energized through the welding foot provided on the base 10 to achieve the heating function. Among them, the welding foot can be a carbon steel welding foot, a copper welding foot, an aluminum welding foot, an alloy welding foot, etc.

[0057] It can be understood that by directly setting the electrical connection part 11 on the base 10 and achieving electrical connection with the guide rod 21, the complexity and cost of the circuit connection can be reduced. At the same time, since one end of the guide rod 21 is directly connected to the base 10, the connection structure between the guide rod 21 and the base 10 is reduced, which helps to improve the reliability and stability of the circuit. In addition, since the guide rod 21 is directly connected to the electrical connection part 11 set on the base 10, the transmission delay and energy loss in the circuit are reduced, so that the guide rod 21 can quickly respond to the input of the power supply, thereby quickly heating the lubricating medium in the lubricating medium layer, and improving the efficiency of regulating the temperature and viscosity in the lubricating medium layer.

[0058] Optionally, the connection between the guide rod 21 and the base 10 includes at least one of a welding connection and an adhesive connection.

[0059] Specifically, the base 10 is a metal base 10, and the guide rod 21 is a metal guide rod 21. The guide rod 21 and the base 10 can be connected by welding, such as laser welding, ultrasonic welding, argon arc welding, resistance welding and other welding methods; after the guide rod 21 and the base 10 are connected by welding, they can be further bonded to improve the connection strength between the two.

[0060] Among them, when the guide rod 21 and the base 10 are only connected by bonding, the guide rod 21 and the base 10 can be connected by bonding with conductive glue. This bonding process has good conductivity, stability and impact resistance, which helps to ensure the reliability of the electrical connection and mechanical connection between the guide rod 21 and the base 10; since no welding operation is required, the damage to the guide rod 21 or the base 10 that may occur during the welding process is avoided, and the operation is simple, which improves the assembly efficiency of the motor.

[0061] In practical applications, the conductive adhesive may be gold conductive adhesive, silver conductive adhesive, copper conductive adhesive, carbon conductive adhesive, nano carbon tube conductive adhesive, etc. The present application does not specifically limit the type of conductive adhesive.

[0062] Optionally, the guide rod 21 includes at least one of an alloy resistor, a copper resistor, an aluminum resistor, and a nickel resistor, which can be freely selected in actual applications and is not specifically limited in this application.

[0063] Optionally, the motor further includes a temperature sensor 40 , which is connected to the base 10 to sense the ambient temperature of the guide rod 21 .

[0064] The housing and the base 10 in the embodiment of the present application are connected to form a receiving chamber, the guide rod 21 is connected between the housing and the base 10 and is located in the receiving chamber, and the temperature sensor 40 is connected to the base 10 and can be located in the receiving chamber, which can improve the accuracy of sensing the temperature in the receiving chamber. In practical applications, when the temperature sensor 40 senses that the temperature is lower than the viscosity of the lubricating medium layer is lower than the preset value, the guide rod 21 is energized, wherein the energization time is related to the material and size of the guide rod 21.

[0065] It should be noted that when the material in the lubricating medium layer is determined, its viscosity characteristics can be determined, so a preset value of viscosity can be given to the electronic device. The preset value can be determined according to actual needs, and this application does not make any specific limitations on this.

[0066] In summary, the motor provided by the embodiment of the present application has at least the following advantages:

[0067] In the embodiment of the present application, since at least a portion of the movable subassembly is sleeved on the guide rod and movably connected to the guide rod, the lubricating medium layer arranged on the outer wall of the guide rod can reduce the friction of the relative movement between the movable subassembly and the guide rod, thereby reducing the driving force required for the movement of the movable subassembly; further, since the guide rod is made of a resistive heating material, when the guide rod is energized, the guide rod can generate heat and increase its temperature, and adjust the temperature and viscosity of the lubricating medium layer arranged on the outer wall of the guide rod, thereby adjusting the friction between the movable subassembly and the guide rod. When the friction between the movable subassembly and the guide rod changes, the driving force of the movable subassembly can be adjusted, so that when the electronic device is in a low-temperature environment, the movable subassembly can also move smoothly along the axial direction of the guide rod. Furthermore, the lens assembly carried by the movable subassembly can also move smoothly to the target position, thereby ensuring the performance of the motor.

[0068] An embodiment of the present application also provides a camera module, which includes: a lens assembly, and the motor as described above, wherein the lens assembly is connected to the moving subassembly.

[0069] It should be noted that the structure of the motor in the camera module provided in the embodiment of the present application is the same as the structure of the motor described in any of the above embodiments, and its beneficial effects are also similar, which will not be repeated here.

[0070] The embodiment of the present application further provides an electronic device, the electronic device comprising the camera module as described above. The electronic device may include but is not limited to at least one of a mobile phone, a tablet computer and a wearable device, and the embodiment of the present application may not limit the specific type of the electronic device.

[0071] It should be noted that the structure of the camera module in the electronic device provided in the embodiment of the present application is the same as the structure of the camera module described in any of the above embodiments, and its beneficial effects are also similar, which will not be repeated here.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0073] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A motor, characterized in that: include: Base; The stator assembly comprises a guide rod connected to the base, the outer wall of the guide rod is provided with a lubricating medium layer, and the viscosity of the lubricating medium layer is related to the temperature; A movable subassembly, used for carrying the lens assembly, at least partially sleeved on the guide rod, and movably connected to the guide rod along the axial direction of the guide rod; Wherein, the guide rod is made of a resistance heating material. When the guide rod is energized, the temperature and viscosity of the lubricating medium layer can be changed to adjust the friction between the mover assembly and the guide rod.

2. The motor according to claim 1, characterized in that The guide rod has a hollow cavity extending axially, and the motor also includes a coil and a magnetic part. One of the coil and the magnetic part is embedded in the hollow cavity, and the other of the coil and the magnetic part is sleeved on the guide rod and movably connected to the guide rod along the axial direction of the guide rod.

3. The motor according to claim 2, characterized in that The coil is a columnar structure and is embedded in the hollow cavity. The magnetic member is a cylindrical structure and is sleeved on the guide rod. In the axial direction of the guide rod, the size of the coil is larger than that of the magnetic member.

4. The motor according to claim 3, characterized in that Along the axial direction of the guide rod, the hollow cavity passes through the guide rod, and the coil extends from one end of the hollow cavity to the other end of the hollow cavity.

5. The motor according to claim 3, characterized in that The movable subassembly further comprises a carrier, wherein the carrier is used to carry the lens assembly, and the magnetic member is fixedly connected to the outer wall of the carrier.

6. The motor according to claim 5, characterized in that The outer wall of the carrier is provided with a connecting portion, and the magnetic member is connected to the connecting portion, wherein the peripheral surface of the magnetic member is adapted to the shape of the connecting portion.

7. The motor according to any one of claims 1 to 6, characterized in that: The base is provided with an electrical connection portion, and the electrical connection portion is electrically connected to the guide rod.

8. The motor according to any one of claims 1 to 6, characterized in that: The connection between the guide rod and the base includes at least one of a welding connection and an adhesive connection.

9. The motor according to claim 8, characterized in that The guide rod is bonded and connected to the base through conductive adhesive.

10. The motor according to any one of claims 1 to 6, characterized in that: The guide rod includes at least one of an alloy resistor, a copper resistor, an aluminum resistor, and a nickel resistor.

11. The motor according to any one of claims 1 to 6, characterized in that: The motor further comprises a temperature sensor, which is connected to the base and is used for sensing the ambient temperature of the guide rod.

12. A camera module, characterized in that: The camera module comprises: a lens assembly, and a motor as described in any one of claims 1 to 11, wherein the lens assembly is connected to the mover assembly.

13. An electronic device, characterized in that: The electronic device includes: the camera module described in claim 12.

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