Retractable camera lens and electronic device
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- AAC MICROTECH (CHANGZHOU) CO LTD
- Filing Date
- 2024-11-12
- Publication Date
- 2026-05-21
Smart Images
Figure CN2024131626_21052026_PF_FP_ABST
Abstract
Description
Telescopic lenses and electronic equipment Technical Field
[0001] This invention relates to the field of electronic equipment technology, and more particularly to a telescopic lens and an electronic device. Background Technology
[0002] To improve image quality, electronic devices (such as mobile phones) are placing increasingly higher demands on their lenses. For example, they are using zoom lenses to achieve zoom capabilities. Compared to zoom lenses in traditional SLR cameras, incorporating zoom lenses into electronic devices requires them to be thinner and lighter. Technical issues
[0003] In related technologies, telescopic lenses typically employ miniature stepper motors, gear sets, and lead screw structures to amplify torque and drive direction, thus completing the lens's extension and retraction. Because this telescopic method uses multi-stage gear transmission, the gear transmission is noisy, and the large backlash results in low transmission efficiency. Furthermore, the numerous gears contribute to the overall large size, making lightweight design impossible. Moreover, the large number of required components leads to complex assembly and high manufacturing costs for telescopic lenses.
[0004] Therefore, it is necessary to provide a new telescopic lens and electronic device to solve the above problems. Technical solutions
[0005] The technical problem to be solved by the present invention is to provide a telescopic lens with small size, high transmission efficiency, small return error, drop resistance, simple structure and manufacturing process, and high stability.
[0006] To solve the above-mentioned technical problems, in a first aspect, embodiments of the present invention provide a telescopic lens, which includes a base, a stator assembly fixed to the base, a rotor assembly rotatably connected to the base and housed inside the stator assembly, a lifting member connected to the rotor assembly, a protective lens assembly slidably mounted on the base and connected to the lifting member, and a lens assembly connected to the base, the protective lens assembly, or the lifting member.
[0007] The stator assembly includes an annular stator ring fixed to the base, a plurality of winding posts protruding from the inner circumference of the stator ring toward the lens assembly, and a plurality of windings respectively sleeved and fixed to the plurality of winding posts; the plurality of winding posts are spaced apart from the rotor assembly.
[0008] The rotor assembly includes a magnetic annular rotor rotatably connected to the base and an annular connecting frame fixed to the inner circumference of the annular rotor. The inner circumference of the annular connecting frame is provided with a track groove, which is inclined relative to the circumferential direction of the annular connecting frame. The lifting member is housed within the annular connecting frame and is at least partially slidably assembled within the track groove. When the winding is energized, it generates a mutual magnetic field with the annular rotor and drives the annular rotor to rotate, thereby driving the lifting member to move up and down along the track groove.
[0009] Preferably, the plurality of winding posts are arranged in a ring array.
[0010] Preferably, the stator ring is an integrally formed structure of silicon steel material or is formed by stacking multiple silicon steel sheets.
[0011] Preferably, the lifting component includes an annular lifting part connected to the protective mirror assembly, and at least two protrusions fixed to the annular lifting part and slidably assembled in the track groove, wherein the protrusions are respectively disposed on the outer periphery of the annular lifting part.
[0012] Preferably, the protective lens assembly includes a mounting base that is slidably mounted on the base and has its two ends connected to form a first receiving cavity, and a protective lens fixed to the end of the mounting base away from the base and covering the first receiving cavity. The lifting member is received in the first receiving cavity and is connected to the lens assembly. The mounting base has at least two first clearance slots extending from its end near the base along its sliding direction. The protrusion passes through the first clearance slots and is slidably mounted in the track groove.
[0013] Preferably, the mounting base includes a first sleeve slidably mounted on the base and having the first receiving cavity, an annular base plate fixed to one end of the first sleeve away from the protective lens, and an annular top plate fixed to the other end of the first sleeve. The lifting member is disposed between the annular base plate and the annular top plate, and the lifting member and the annular top plate are elastically connected by a buffer assembly. Wherein, when the protective lens assembly is not subjected to downward pressure, the lifting member always abuts against the annular base plate under the elastic force of the buffer assembly.
[0014] Preferably, the base includes an annular base body, a support portion extending from the inner periphery of the base body toward the lens assembly, and a second sleeve extending from the support portion toward the rotor assembly; the second sleeve has a second receiving cavity, the lens assemblies are spaced apart in the second receiving cavity, the second sleeve is disposed in the annular connecting frame and spaced apart from each other, the second sleeve has at least two second clearance slots respectively disposed opposite to the first clearance slot, each of the protrusions passes through the corresponding first clearance slot and the second clearance slot in sequence, and is slidably assembled in the track groove.
[0015] Preferably, the support portion is provided with a plurality of through holes, through which the wires of the winding are led out.
[0016] Preferably, the telescopic lens further includes a dustproof sheet located at the positions of the plurality of cable outlet holes and covering and fixing the support portion to the side away from the stator assembly.
[0017] Preferably, the telescopic lens further includes an annular protective shell fixed to one end of the base body away from the support portion, and an annular sealing member fixed to the annular protective shell and in sealing contact with the protective lens assembly.
[0018] Preferably, the annular rotor is an integrally formed multi-pole radially magnetized annular structure or an annular structure surrounded by multiple magnets; wherein, the multiple magnets are arranged along the outer periphery of the annular connecting frame in an alternating N-pole and S-pole manner.
[0019] Preferably, the telescopic lens further includes a position acquisition unit, which is used to acquire the rotation parameters of the rotor assembly;
[0020] The position acquisition unit includes a permanent magnet and a position sensor. The permanent magnet is embedded in the side of the rotor assembly near the base, and the position sensor is fixed to the base. The permanent magnet and the position sensor are arranged correspondingly and spaced apart from each other.
[0021] Preferably, the telescopic lens further includes a buffer assembly housed within the first accommodating cavity. The buffer assembly includes a guide member whose two ends are respectively fixed to the annular base plate and the annular top plate and are arranged along the sliding direction of the mounting base, and an elastic member whose two ends are respectively connected to the lifting member and the annular top plate. The guide member passes through the lifting member and is slidably assembled with the lifting member.
[0022] Secondly, embodiments of the present invention provide an electronic device including the aforementioned telescopic lens. Beneficial effects
[0023] Compared with existing technologies, in the telescopic lens of this invention, the stator assembly drives the annular rotor to rotate, and the annular connecting frame rotates under the drive of the annular rotor. Since the lifting component is at least partially slidably assembled in the track groove, and the track groove is inclined relative to the circumferential direction of the annular connecting frame, the annular connecting frame can drive the lifting component up and down or up and down. The protective lens assembly slides up and down under the drive of the lifting component, thereby realizing the extension or retraction of the protective lens assembly. At the same time, after the protective lens assembly extends or before it retracts, the lens assembly can automatically extend or retract, or the lens assembly can move with the lifting component or the protective lens assembly, thereby achieving the purpose of optical zoom. Thus, through the mutual cooperation between the stator assembly, the annular rotor, the annular connecting frame, and the lifting component in this invention, the gear set can be directly eliminated, avoiding the losses of multi-stage gear transmission, resulting in high transmission efficiency, lower power consumption, lower noise, significantly reduced number of parts, simpler assembly, and significantly reduced manufacturing costs. Moreover, since the stator assembly and rotor assembly are directly driven, the backlash error caused by the accumulation of gear transmission clearance can be reduced, resulting in higher transmission accuracy. Furthermore, the overall design features a regular circular shape, making it more aesthetically pleasing and easier to stack. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:
[0025] Figure 1 is a schematic diagram of the structure of the electronic device provided in an embodiment of the present invention;
[0026] Figure 2 is a partial exploded view of the electronic device provided in an embodiment of the present invention;
[0027] Figure 3 is a partial exploded view of the telescopic lens provided in an embodiment of the present invention;
[0028] Figure 4 is a cross-sectional view along line AA in Figure 3;
[0029] Figure 5 is a cross-sectional view along line BB in Figure 3;
[0030] Figure 6 is a schematic diagram of the structure of the base of the telescopic lens provided in an embodiment of the present invention;
[0031] Figure 7 is a schematic diagram of the stator assembly of the telescopic lens provided in an embodiment of the present invention. Embodiments of the present invention
[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0033] Please refer to Figures 1 and 2. This embodiment of the invention provides an electronic device 200, including a device body 201 and a telescopic lens 100 assembled within the device body 201. The electronic device 200 can be a mobile phone, etc., and the telescopic lens 100 is the rear camera of the mobile phone. The telescopic lens 100 can achieve optical zoom through telescopic movement, thereby enabling the mobile phone to have a shooting effect similar to that of an SLR camera.
[0034] Please refer to Figures 2-7. The present invention provides a telescopic lens 100, which includes a base 1, a stator assembly 2 fixed to the base 1, a rotor assembly 3 rotatably connected to the base 1 and housed inside the stator assembly 2, a lifting member 4 connected to the rotor assembly 3, a protective lens assembly 5 slidably mounted to the base 1 and connected to the lifting member 4, and a lens assembly 6 connected to the base 1, the protective lens assembly 5, or the lifting member 4.
[0035] The stator assembly 2 includes an annular stator ring 21 fixed to the base 1, a plurality of winding posts 22 extending from the inner circumference of the stator ring 21 toward the lens assembly 6, and a plurality of windings 23 respectively sleeved and fixed to the plurality of winding posts 22; the plurality of winding posts 22 are all spaced apart from the rotor assembly 3.
[0036] The rotor assembly 3 includes a magnetic annular rotor 31 rotatably connected to the base 1 and an annular connecting frame 32 fixed to the inner circumference of the annular rotor 31. The inner circumference of the annular connecting frame 32 is provided with a track groove 33, which is inclined relative to the circumferential direction of the annular connecting frame 32. The lifting member 4 is housed in the annular connecting frame 32 and is at least partially slidably assembled in the track groove 33. When the winding 23 is energized, it generates a mutual magnetic field with the annular rotor 31 and drives the annular rotor 31 to rotate, thereby driving the lifting member 4 to move up and down along the track groove 33.
[0037] Specifically, after the multiple windings 23 of the stator assembly 2 are energized, they drive the annular rotor 31 to rotate. The annular connecting frame 32 rotates under the drive of the annular rotor 31. Since the lifting component 4 is at least partially slidably assembled in the track groove 33, and the track groove 33 is inclined relative to the circumferential direction of the annular connecting frame 32, the annular connecting frame 32 can drive the lifting component 4 to move up and down or lift and lower. The protective lens assembly 5 slides up and down under the drive of the lifting component 4, thereby realizing the extension and retraction of the protective lens assembly 5. At the same time, before the protective lens assembly 5 extends or retracts, the lens assembly 6 can automatically extend or retract, or the lens assembly 6 can move with the lifting component 4 or the protective lens assembly 5, thereby achieving the purpose of optical zoom. Thus, through the mutual cooperation between the stator assembly 2, the annular rotor 31, the annular connecting frame 32 and the lifting component 4 in this invention, the gear set can be directly eliminated, avoiding the loss of multi-stage gear transmission, resulting in high transmission efficiency, lower power consumption, lower noise, a significant reduction in the number of parts, simpler assembly, and a significant reduction in manufacturing costs. Moreover, since the stator assembly 2 and rotor assembly 3 are directly driven, the backlash error caused by the accumulation of gear transmission clearance can be reduced, resulting in higher transmission accuracy.
[0038] In this embodiment, the track groove 33 can be set at an angle upward or downward. For example, when the track groove 33 is set at an angle upward, the stator assembly 2 drives the annular rotor 31 to rotate clockwise, and the annular connecting frame 32 drives the lifting member 4 to descend; when the stator assembly 2 drives the annular rotor 31 to rotate counterclockwise, the annular connecting frame 32 drives the lifting member 4 to rise.
[0039] In this embodiment, the plurality of winding posts 22 are arranged in a ring array. This ensures that the windings 23 on the winding posts 22 are evenly distributed, resulting in good magnetic field driving stability and sufficient driving power after the windings 23 are energized.
[0040] In this embodiment, the stator ring 21 is a one-piece molded structure made of silicon steel or formed by stacking multiple silicon steel sheets. It has high structural strength.
[0041] In this embodiment, the lifting component 4 includes an annular lifting part 41 connected to the protective mirror assembly 5, and at least two protrusions 42 fixed to the annular lifting part 41 and slidably assembled in the track groove 33. The protrusions 42 are respectively disposed on the outer periphery of the annular lifting part 41.
[0042] When the annular connecting frame 32 rotates, the protrusion 42 rises or falls under the drive of the annular connecting frame 32, and the annular lifting part 41 rises or falls along with the protrusion 42. At the same time, the protective mirror assembly 5 rises or falls under the drive of the annular lifting part 41, realizing the extension or retraction of the protective mirror assembly 5. The protrusion 42 is adapted to the track groove 33, and the protrusion 42 is cylindrical, which facilitates the sliding of the protrusion 42 in the track groove 33. The annular connecting frame 32 has a bottom end and a top end that are spaced apart in the sliding direction of the protective mirror assembly 5. One end of the track groove 33 extends to form an opening at the bottom end of the annular connecting frame 32 near the base, which facilitates the assembly of the protrusion 42 of the lifting part 4 into the track groove 33; the other end extends between the bottom end and the top end of the annular connecting frame 32 to prevent the protrusion 42 from sliding out of the track groove 33.
[0043] Depending on actual needs, the protrusion 42 can be integrated with the annular lifting part 41 or set separately. Multiple track grooves 33 can be provided on the annular connecting frame 32. These track grooves 33 are centrally symmetrically designed, and when there are three or more track grooves 33, they are evenly distributed at an angle. Multiple protrusions 42 can be provided on the outer periphery of the annular lifting part 41. These protrusions 42 are slidably fitted into the multiple track grooves 33. For example, in a specific example, the annular connecting frame 32 has three evenly distributed and spaced track grooves 33, and the outer periphery of the annular lifting part 41 has three evenly distributed and spaced protrusions 42. These three protrusions 42 are slidably fitted into the three track grooves 33, ensuring the stability and smoothness of the annular connecting frame 32 driving the lifting part 4 to rise or fall.
[0044] In this embodiment, the annular connecting frame 32 can be made of a magnetically conductive material, which can enhance the magnetic properties of the rotor assembly 3 and increase the driving force of the rotor assembly 3. The annular connecting frame 32 can be rotatably mounted on the base 1 via bearings, or transmission rails 34 can be respectively provided on the outer periphery of both ends of the annular connecting frame 32. The transmission rails 34 are provided with balls, which contact the base 1, so that the annular connecting frame 32 can be rotatably mounted on the base 1.
[0045] In some embodiments, the lens assembly 6 is connected to the lifting member 4, wherein the lens assembly 6 includes a lens, the lens assembly 6 is fixed to and housed within the annular lifting part 41, and the lens assembly 6 is driven by the annular lifting part 41 to achieve upward or downward movement.
[0046] In this embodiment, the protective lens assembly 5 includes a mounting base 51 slidably mounted on the base 1 and having both ends connected to form a first receiving cavity 52, and a protective lens 53 fixed to the end of the mounting base 51 away from the base 1 and covering the first receiving cavity 52. A lifting member 4 is housed within the first receiving cavity 52 and is connected to the lens assembly 6. The mounting base 51 has at least two first clearance slots 54 extending from its end near the base 1 along its sliding direction. The protrusion 42 at least partially passes through the first clearance slots 54 and is slidably mounted within the track groove 33. The lifting member 4 drives the mounting base 51 to move up and down, thereby realizing the telescopic movement of the protective lens assembly 5. The protrusion 42 passes through the first clearance slots 54, the length of which is greater than the maximum distance the lifting member 4 can rise or fall, so that the mounting base 51 does not interfere with the sliding action of the protrusion 42.
[0047] In this embodiment, the mounting base 51 includes a first sleeve 511 slidably mounted on the base 1 and having a first receiving cavity 52, an annular base plate 512 fixed to one end of the first sleeve 511 away from the protective lens 53, and an annular top plate 513 fixed to the other end of the first sleeve 511. A lifting member 4 is disposed between the annular base plate 512 and the annular top plate 513, and the lifting member 4 and the annular top plate 513 are elastically connected by a buffer assembly 10. When the protective lens assembly 5 is not subjected to downward pressure, the lifting member 4 always abuts against the annular base plate 512 under the elastic force of the buffer assembly 10. By ensuring that the lifting member 4 always abuts against the annular base plate 512 under the elastic force when the protective lens assembly 5 is not subjected to downward pressure, the lifting member 4 and the mounting base 51 are tightly fitted together, thus allowing the lifting member 4 and the mounting base 51 to be considered as a single unit, ensuring that the lifting member 4 and the mounting base 51 rise or fall synchronously.
[0048] In this embodiment, the telescopic lens 100 also includes an image receiving component 30 fixed to the base 1. The image receiving component 30 and the lens component 6 are arranged facing each other. When the protective lens component 5 is extended, the lens component 6 moves away from the image receiving component 30, changing the distance between the lens component 6 and the image receiving component 30, thereby achieving the purpose of optical zoom.
[0049] In this embodiment, the base 1 includes an annular base body 11, a support portion 12 extending from the inner circumference of the base body 11 towards the lens assembly 6, and a second sleeve 13 extending from the support portion 12 towards the rotor assembly 3. The second sleeve 13 has a second receiving cavity 17, in which the lens assemblies 6 are spaced apart. The second sleeve 13 is disposed within the annular connecting frame 32 and spaced apart from each other. The second sleeve 13 has at least two second clearance slots 14 respectively disposed opposite to the first clearance slot 54. Each protrusion passes sequentially through its corresponding first clearance slot 54 and second clearance slot 14 and is slidably fitted into the track groove 33. The base body 11, support portion 12, and second sleeve 13 can be an integral structure with high structural strength. A gap is provided between the second sleeve 13 and the annular connecting frame 32 to ensure smooth rotation of the annular connecting frame 32. The second clearance groove 14 and the first clearance groove 54 correspond to each other, which can prevent the base 1 from interfering with the sliding of the lifting component 4, and make it convenient for the lifting component 4 to rise or fall.
[0050] In some embodiments, the lens assembly 6 is connected to the base 1, wherein the lens assembly 6 includes a lens and a VCM (Voice Coil Motor). The VCM is fixed to the base 1 via the image receiving assembly 30. The lifting and lowering of the protective lens assembly 5 can provide space for the movement of the lens. For example, after the protective lens 53 extends, the VCM drives the lens to move upward to extend; before the protective lens 53 retracts, the VCM drives the lens to move downward to retract.
[0051] In this embodiment, the support portion 12 is provided with a plurality of through-holes 15, through which the leads of the winding 23 are led out. This facilitates the connection of the leads of the winding 23 to an external power source for power supply.
[0052] In this embodiment, the telescopic lens 100 further includes a dustproof sheet 16, which is located at the positions of the plurality of cable exit holes 15 and is fixedly attached to the side of the support portion 12 away from the stator assembly 2. Both the cable exit positions and the dustproof sheet 16 (IR sheet) are glued to the base 1, completely isolating the stator assembly 2 from the bottom photosensitive module and avoiding the risk of dust generation during long-term operation.
[0053] In this embodiment, the telescopic lens 100 further includes an annular protective shell 7 fixed to one end of the base body 11 away from the support portion 12, and an annular sealing member 8 fixed to the annular protective shell 7 and in sealing contact with the protective lens assembly 5. The annular protective shell 7 can decorate the telescopic lens 100, and the annular sealing member 8 can be a sealing ring. The annular sealing member 8 is in sealing contact with the outer peripheral surface of the base body 11, allowing it to prevent dust and water ingress, thereby ensuring the airtightness of the connection to the telescopic lens 100.
[0054] In this embodiment, the annular rotor 31 is a one-piece, multi-pole radially magnetized annular structure or an annular structure surrounded by multiple magnets; wherein, the multiple magnets are arranged along the outer periphery of the annular connecting frame 32 in an alternating N-pole and S-pole manner. The multi-stage radial magnetization of the magnets is beneficial for outputting reluctance torque, and the magnets can be prepared using hot pressing, sintering, and other molding techniques, resulting in good magnetic properties.
[0055] Optionally, a rotor can be composed of multiple magnets, and the number of slots and magnetic poles is not limited in specific implementation and can be designed according to the required parameters and dimensions.
[0056] In this embodiment, the telescopic lens 100 further includes a position acquisition unit 9, which is used to acquire the rotation parameters of the rotor assembly 3. The position acquisition unit 9 includes a permanent magnet 91 and a position sensor 92. The permanent magnet 91 is embedded in the side of the rotor assembly 3 near the base 1, and the position sensor 92 is fixed to the base 1. The permanent magnet 91 and the position sensor 92 are correspondingly arranged and spaced apart from each other. The permanent magnet 91 is embedded in the side of the annular connecting frame 32 near the base 1. The position sensor 92 can be a TMR / Hall sensor, etc., to realize real-time detection of the lifting height during the lifting process and perform closed-loop control.
[0057] In this embodiment, the telescopic lens 100 also includes a circuit board 20, which is fixed to the base 1, and the image receiving component 30 is electrically connected to the circuit board 20. The position sensor 92 is fixed to the circuit board 20 and electrically connected. The circuit board 20 is a flexible printed circuit (FPC), which features high wiring density, light weight, thinness, and good bendability.
[0058] In this embodiment, the buffer assembly 10 is used to cushion movement after being subjected to downward pressure. The buffer assembly 10 includes a guide member 101 whose two ends are respectively fixed to the annular base plate 512 and the annular top plate 513 and whose length is arranged along the sliding direction of the mounting base 51, and an elastic member 102 whose two ends are respectively connected to the lifting member 4 and the annular top plate 513. The guide member 101 passes through the lifting member 4 and is slidably assembled with the lifting member 4. When the protective mirror assembly 5 is in the extended state and the protective mirror assembly 5 is pressed down, the mounting base 51 will move downward and compress the elastic member 102. At this time, the elastic member 102 will be further compressed first to keep the position of the lifting member 4 stationary, avoiding direct stress transmission to the protrusion 42 and the annular connecting frame 32 of the lifting member 4, thereby protecting the mechanism.
[0059] The elastic element 102 is always in a compressed state, so that when the protective component is not subjected to downward pressure, the lifting component 4 is always in contact with the annular base plate 512 under the action of the rebound force provided by the elastic element 102.
[0060] Depending on actual needs, the guide member 101 can be a guide rod, and the elastic member 102 can be a spring. The elastic member 102 can be sleeved on the outer periphery of the guide member 101. The number of guide members 101 and elastic members 102 is the same as the number of protrusions 42. For example, there are three guide members 101, three elastic members 102, and three protrusions 42.
[0061] Compared with related technologies, in the telescopic lens of this invention, the stator assembly drives the annular rotor to rotate, and the annular connecting frame rotates under the drive of the annular rotor. Since the lifting component is at least partially slidably assembled in the track groove, and the track groove is inclined relative to the circumferential direction of the annular connecting frame, the annular connecting frame can drive the lifting component up and down or up and down. The protective lens assembly slides up and down under the drive of the lifting component, thereby realizing the extension or retraction of the protective lens assembly. At the same time, after the protective lens assembly extends or before it retracts, the lens assembly can automatically extend or retract, or the lens assembly can move with the lifting component or the protective lens assembly, thereby achieving the purpose of optical zoom. Therefore, through the mutual cooperation between the stator assembly, the annular rotor, the annular connecting frame, and the lifting component in this invention, the gear set can be directly eliminated, avoiding the loss of multi-stage gear transmission, resulting in high transmission efficiency, lower power consumption, lower noise, significantly reduced number of parts, simpler assembly, and significantly reduced manufacturing costs. Moreover, since the stator assembly and rotor assembly are directly driven, the backlash error caused by the accumulation of gear transmission clearance can be reduced, resulting in higher transmission accuracy.
[0062] The above description is merely an embodiment of the present invention. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements all fall within the protection scope of the present invention.
Claims
1. A telescopic lens, comprising a base, a stator assembly fixed to the base, a rotor assembly rotatably connected to the base and housed within the stator assembly, a lifting member connected to the rotor assembly, a protective lens assembly slidably mounted to the base and connected to the lifting member, and a lens assembly connected to the base, the protective lens assembly, or the lifting member; characterized in that, The stator assembly includes an annular stator ring fixed to the base, a plurality of winding posts protruding from the inner circumference of the stator ring toward the lens assembly, and a plurality of windings respectively sleeved and fixed to the plurality of winding posts; the plurality of winding posts are spaced apart from the rotor assembly. The rotor assembly includes a magnetic annular rotor rotatably connected to the base and an annular connecting frame fixed to the inner circumference of the annular rotor. The inner circumference of the annular connecting frame is provided with a track groove, which is inclined relative to the circumferential direction of the annular connecting frame. The lifting member is housed within the annular connecting frame and is at least partially slidably assembled within the track groove. When the winding is energized, it generates a mutual magnetic field with the annular rotor and drives the annular rotor to rotate, thereby driving the lifting member to move up and down along the track groove.
2. The telescopic lens according to claim 1, characterized in that, The multiple winding posts are arranged in a ring array.
3. The telescopic lens according to claim 1, characterized in that, The stator ring is a one-piece molded structure made of silicon steel or formed by stacking multiple silicon steel sheets.
4. The telescopic lens according to claim 1, characterized in that, The lifting component includes an annular lifting part connected to the protective mirror assembly, and at least two protrusions fixed to the annular lifting part and slidably assembled in the track groove, wherein the protrusions are respectively disposed on the outer periphery of the annular lifting part.
5. The telescopic lens according to claim 4, characterized in that, The protective lens assembly includes a mounting base that is slidably mounted on the base and has its two ends connected to form a first receiving cavity, and a protective lens fixed to one end of the mounting base away from the base and covering the first receiving cavity. The lifting member is housed in the first receiving cavity and is connected to the lens assembly. The mounting base has at least two first clearance slots extending from one end near the base along its sliding direction. The protrusion passes through the first clearance slots and is slidably mounted in the track groove.
6. The telescopic lens according to claim 5, characterized in that, The mounting base includes a first sleeve slidably mounted on the base and having the first receiving cavity, an annular base plate fixed to one end of the first sleeve away from the protective lens, and an annular top plate fixed to the other end of the first sleeve. The lifting member is disposed between the annular base plate and the annular top plate, and the lifting member and the annular top plate are elastically connected by a buffer assembly. When the protective lens assembly is not subjected to downward pressure, the lifting member always abuts against the annular base plate under the elastic force of the buffer assembly.
7. The telescopic lens according to claim 5, characterized in that, The base includes an annular base body, a support portion extending from the inner periphery of the base body toward the lens assembly, and a second sleeve extending from the support portion toward the rotor assembly by bending. The second sleeve has a second receiving cavity, in which the lens assemblies are spaced apart. The second sleeve is disposed within the annular connecting frame and spaced apart from each other. The second sleeve has at least two second clearance slots respectively disposed opposite to the first clearance slot. Each protrusion passes through the corresponding first clearance slot and the second clearance slot in sequence and is slidably fitted into the track groove.
8. The telescopic lens according to claim 7, characterized in that, The support portion is provided with multiple outlet holes, through which the wires of the winding are led out.
9. The telescopic lens according to claim 8, characterized in that, The telescopic lens also includes a dustproof sheet located at the positions of the plurality of cable outlet holes and covering and fixing the support portion to the side away from the stator assembly.
10. The telescopic lens according to claim 9, characterized in that, The telescopic lens also includes an annular protective shell fixed to one end of the base body away from the support, and an annular sealing element fixed to the annular protective shell and in sealing contact with the protective lens assembly.
11. The telescopic lens according to claim 1, characterized in that, The annular rotor is an integrally formed multi-pole radially magnetized annular structure or an annular structure surrounded by multiple magnets; wherein, the multiple magnets are arranged along the outer periphery of the annular connecting frame in an alternating N-pole and S-pole manner.
12. The telescopic lens according to claim 1, characterized in that, The telescopic lens also includes a position acquisition unit, which is used to acquire the rotation parameters of the rotor assembly; The position acquisition unit includes a permanent magnet and a position sensor. The permanent magnet is embedded in the rotor assembly on the side near the base, and the position sensor is fixed to the base. The permanent magnet and the position sensor are arranged correspondingly and spaced apart from each other.
13. The telescopic lens according to claim 6, characterized in that, The buffer assembly includes a guide member whose two ends are respectively fixed to the annular base plate and the annular top plate and are arranged along the sliding direction of the mounting base, and an elastic member whose two ends are respectively connected to the lifting member and the annular top plate. The guide member passes through the lifting member and is slidably assembled with the lifting member.
14. An electronic device, characterized in that, Includes the telescopic lens as described in any one of claims 1-13.