Telescopic lens and electronic equipment

Abstract

The invention provides a telescopic lens and electronic equipment, and the telescopic lens comprises a pedestal, a stator assembly, a rotor assembly, a lifting part, a protection lens assembly, and a lens assembly, the rotor assembly comprises an annular rotor rotatably connected to the pedestal, and an annular connection frame fixed to the annular rotor and accommodated in the annular rotor, the inner wall of the annular connecting frame is provided with a rail groove, the rail groove is obliquely arranged relative to the circumferential direction of the annular connecting frame, the lifting piece is contained in the annular connecting frame, and at least part of the lifting piece is assembled in the rail groove in a sliding mode. The stator assembly, the annular rotor, the annular connecting frame and the lifting piece are matched with one another, a gear set can be directly omitted, multi-stage gear transmission loss is avoided, the transmission efficiency is high, power consumption is lower, noise is lower, the number of parts is greatly reduced, assembling is easy, and the manufacturing cost is remarkably reduced. Moreover, the stator assembly and the rotor assembly are directly driven, so that the return stroke error caused by gear transmission clearance accumulation can be reduced, and the transmission precision is higher.

Description

[Technical field]

[0001] The invention belongs to the technical field of electronic equipment, and in particular relates to a telescopic lens and electronic equipment. [Background technology]

[0002] In order to improve the quality of photographing, electronic devices (such as mobile phones, etc.) have increasingly higher requirements for lenses. For example, a telescopic lens is used on electronic devices to achieve zooming. Compared with the telescopic lens on a traditional SLR camera, the telescopic lens on an electronic device needs to meet the requirement that the electronic device is lighter and thinner.

[0003] In the related art, telescopic lenses generally use micro-stepping motors, gear sets, lead screw structures, etc. to achieve torque amplification and reversing transmission to complete the telescopic movement of the lens. Since this telescopic method uses multi-stage gear transmission, the loss is large, resulting in low transmission efficiency; moreover, it requires a large number of parts, resulting in complex assembly of the telescopic lens and high manufacturing cost.

[0004] Therefore, it is necessary to provide a new telescopic lens and electronic equipment to solve the technical problems existing in the related art. [Summary of the invention]

[0005] The purpose of the present invention is to provide a telescopic lens and an electronic device, which can solve the technical problems in the related art that the telescopic structure used in the telescopic lens on the electronic device has low transmission efficiency, complex assembly and high manufacturing cost.

[0006] The technical solution of the present invention is as follows:

[0007] A telescopic lens comprises a base, a stator assembly fixed to the base, a rotor assembly rotatably connected to the base and accommodated in the stator assembly, a lifting member connected to the rotor assembly, a protective mirror assembly slidably assembled on the base and connected to the lifting member, and a lens assembly connected to the base or the protective mirror assembly or the lifting member, wherein the rotor assembly comprises an annular rotor rotatably connected to the base, and an annular connecting frame fixed to the annular rotor and accommodated in the annular rotor, the inner wall of the annular connecting frame is provided with a track groove, the track groove is inclined relative to the circumferential direction of the annular connecting frame, the lifting member is accommodated in the annular connecting frame, and the lifting member is at least partially slidably assembled in the track groove.

[0008] Optionally, the lifting member includes an annular lifting portion connected to the protective mirror assembly, and a protruding portion fixed to the annular lifting portion and slidably assembled in the track groove, and the protruding portion is arranged on the outer peripheral side of the annular lifting portion.

[0009] Optionally, when the lens assembly is connected to the lifting member, the lens assembly is fixed to the annular lifting portion and accommodated in the annular lifting portion.

[0010] Optionally, the protective mirror assembly includes a mounting seat slidably assembled on the base and connected at both ends to form a first accommodating cavity, and a protective lens fixed to one end of the mounting seat and covering the first accommodating cavity, the lifting member is accommodated in the first accommodating cavity and connected to the mounting seat, the mounting seat is provided with a first clearance groove whose length extends along its sliding direction, and the lifting member at least partially passes through the first clearance groove and is slidably assembled in the track groove.

[0011] Optionally, the mounting seat includes a first sleeve slidably assembled on the base and provided with the first accommodating cavity, an annular bottom 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 arranged between the annular bottom plate and the annular top plate, and the lifting member is elastically connected to the annular top plate; wherein, when the protective lens assembly is not subjected to downward pressure, the lifting member always abuts against the annular bottom plate under the action of elastic force.

[0012] Optionally, the telescopic lens also includes a buffer assembly accommodated in the first accommodating cavity, the buffer assembly including a guide member whose two ends are respectively fixed to the annular bottom plate and the annular top plate and whose length extends along the sliding direction of the mounting seat, 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.

[0013] Optionally, when the lens assembly is connected to the protective lens assembly, the lens assembly is fixed to the mounting seat and accommodated in the first accommodating cavity.

[0014] Optionally, the base includes a pedestal and a second sleeve fixed to the pedestal and provided with a second accommodating cavity, the second sleeve is arranged in the annular connecting frame, the mounting seat is slidably assembled in the second accommodating cavity, the second sleeve is provided with a second clearance groove arranged at least partially opposite to the first clearance groove, at least part of the lifting member passes through the first clearance groove and the second clearance groove in sequence, and is slidably assembled in the track groove.

[0015] Optionally, the annular rotor includes a magnetic ring fixed and sleeved on the outer circumference of the annular connecting frame, and the magnetic ring adopts multi-stage radial magnetization; or, the annular rotor includes a plurality of magnetic steels fixed to the outer circumference of the annular connecting frame, and a plurality of raised spacers are fixed on the outer circumference of the annular connecting frame, and a positioning groove is formed between two adjacent raised spacers, and the plurality of magnetic steels are fixed in the plurality of positioning grooves one by one.

[0016] Optionally, the stator assembly includes a first annular stator fixed to the base and a second annular stator fixed to a side of the first annular stator away from the base, and the first annular stator and the second annular stator are both sleeved on the outside of the annular rotor and spaced apart from the annular rotor;

[0017] The first annular stator comprises a first magnetic yoke ring fixed to the base, a second magnetic yoke ring fixed to a side of the first magnetic yoke ring away from the base and enclosed with the first magnetic yoke ring to form a first annular mounting groove, a first annular frame fixed to the first magnetic yoke ring and accommodated in the first annular mounting groove, and a first coil sleeved on the outer side of the first annular frame, and the first magnetic yoke ring and the second magnetic yoke ring are respectively provided with a plurality of first claw teeth and a plurality of second claw teeth spaced along the circumferential direction on the inner sides close to the annular rotor, and the first claw teeth and the second claw teeth are staggered and extend towards each other;

[0018] The second annular stator includes a third magnetic yoke ring fixed to the side of the first magnetic yoke ring away from the base, a fourth magnetic yoke ring fixed to the second magnetic yoke ring and enclosed with the third magnetic yoke ring to form a second annular mounting groove, a second annular skeleton fixed to the fourth magnetic yoke ring and accommodated in the second annular mounting groove, and a second coil sleeved on the outside of the second annular skeleton, and the third magnetic yoke ring and the fourth magnetic yoke ring are respectively provided with a plurality of third claw teeth and a plurality of fourth claw teeth distributed along the circumferential direction at intervals on the inner side close to the annular rotor, and the third claw teeth and the fourth claw teeth are staggered and extend in opposite directions.

[0019] Optionally, the telescopic lens further comprises an annular protective shell fixed to one end of the third magnetic yoke ring away from the base, and an annular seal fixed to the annular protective shell and in sealing contact with the protective lens assembly.

[0020] The present invention also provides an electronic device, comprising the telescopic lens as described in any one of the above.

[0021] The beneficial effects of the present invention are as follows: 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 member 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 member to move up and down or up and down, and the protective mirror assembly slides up and down under the drive of the lifting member, thereby realizing the extension or retraction of the protective mirror assembly; at the same time, after the protective mirror assembly is extended or before it is retracted, the lens assembly 30 can automatically extend or retract, or the lens assembly can follow the movement of the lifting member or the protective mirror 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 member in this scheme, the gear set can be directly omitted, and the multi-stage gear transmission loss is avoided. The transmission efficiency is high, the power consumption is lower, the noise is smaller, the number of parts is greatly simplified, the assembly is simple, and the manufacturing cost is significantly reduced. Moreover, since the stator assembly and the rotor assembly are directly driven, the return error caused by the accumulation of gear transmission clearance can be reduced, and the transmission accuracy is higher.

Brief Description of the Drawings

[0022] Figure 1 A schematic diagram of the structure of an electronic device provided by the present invention;

[0023] Figure 2 A schematic diagram of the structure of the telescopic lens provided by the present invention;

[0024] Figure 3 for Figure 2 AA section view of the telescopic lens in the retracted state;

[0025] Figure 4 for Figure 2 AA section view of the telescopic lens when it is in the extended state;

[0026] Figure 5 for Figure 2 AA section view of the protective lens assembly of the telescopic lens when downward pressure is applied;

[0027] Figure 6 An exploded view of the telescopic lens provided by the present invention;

[0028] Figure 7 A schematic diagram of the assembly of the stator assembly, the rotor assembly and the lifting member in the telescopic lens provided by the present invention;

[0029] Figure 8 A schematic diagram of the structure when the annular rotor in the rotor assembly provided by the present invention is a magnetic ring;

[0030] Fig. 9 A schematic diagram of the structure when the annular rotor in the rotor assembly provided by the present invention is composed of multiple magnetic steels;

[0031] Fig.10 yes Fig. 9 A magnified view of detail B;

[0032] Fig.11 A cross-sectional view of the lifting member and the lens assembly provided by the present invention when assembled;

[0033] Fig.12 A cross-sectional view of the protective mirror assembly and the lens assembly provided by the present invention when assembled;

[0034] Fig.13 A cross-sectional view of the base and the lens assembly provided by the present invention when assembled;

[0035] Fig.14 A schematic diagram of the structure of a stator assembly provided by the present invention;

[0036] Fig.15 for Fig.14 Sectional view along CC direction. [Specific implementation method]

[0037] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0038] See also Figure 1 An embodiment of the present invention provides an electronic device, including a device body 20 and a telescopic lens 10 assembled in the device body 20, wherein the electronic device can be a mobile phone, etc., the telescopic lens 10 is the rear lens of the mobile phone, and the telescopic lens 10 can achieve optical zoom through telescopic movement, so that the mobile phone has a shooting effect similar to that of a SLR camera.

[0039] See also Figures 2 to 15 The telescopic lens 10 includes a base 1, a stator assembly 2 fixed to the base 1, a rotor assembly 3 rotatably connected to the base 1 and accommodated in the stator assembly 2, a lifting member 4 connected to the rotor assembly 3, a protective mirror assembly 5 slidably assembled on the base 1 and connected to the lifting member 4, and a lens assembly 30 connected to the base 1 or the protective mirror assembly 5 or the lifting member 4. The rotor assembly 3 includes an annular rotor 31 rotatably connected to the base 1, and an annular connecting frame 32 fixed to the annular rotor 31 and accommodated in the annular rotor 31. The inner wall of the annular connecting frame 32 is provided with a track groove 321, and the track groove 321 is inclined relative to the circumferential direction of the annular connecting frame 32. The lifting member 4 is accommodated in the annular connecting frame 32, and the lifting member 4 is at least partially slidably assembled in the track groove 321.

[0040] The stator assembly 2 drives the annular rotor 31 to rotate, and the annular connecting frame 32 rotates under the drive of the annular rotor 31. Since the lifting member 4 is at least partially slidably assembled in the track groove 321, and the track groove 321 is inclined relative to the circumferential direction of the annular connecting frame 32, the annular connecting frame 32 can drive the lifting member 4 to move up and down or up and down, and the protective mirror assembly 5 slides up and down under the drive of the lifting member 4, thereby realizing the extension or retraction of the protective mirror assembly 5; at the same time, after the protective mirror assembly 5 is extended or before it is retracted, the lens assembly 30 can automatically extend or retract, or the lens assembly 30 can move with the lifting member 4 or the protective mirror assembly 5, thereby achieving the purpose of optical zoom. Therefore, through the mutual cooperation between the stator assembly 2, the annular rotor 31, the annular connecting frame 32 and the lifting member 4 in this scheme, the gear set can be directly omitted, avoiding the multi-stage gear transmission loss, high transmission efficiency, lower power consumption, lower noise, greatly simplified number of parts, simple assembly, and significantly reduced manufacturing cost. Moreover, since the stator assembly 2 and the rotor assembly 3 are directly driven, the return error caused by the accumulation of gear transmission clearance can be reduced, and the transmission accuracy is higher.

[0041] It should be noted that the track groove 321 can be set obliquely upward or obliquely downward. For example, when the track groove 321 is set obliquely 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; the stator assembly 2 drives the annular rotor 31 to rotate counterclockwise, and the annular connecting frame 32 drives the lifting member 4 to rise.

[0042] See also Figure 2 , Figure 3 and Figure 7 The lifting member 4 includes an annular lifting portion 41 connected to the protective mirror assembly 5, and a protrusion 42 fixed to the annular lifting portion 41 and slidably assembled in the track groove 321, and the protrusion 42 is arranged on the outer peripheral side of the annular lifting portion 41. 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 portion 41 rises or falls following the protrusion 42. At the same time, the protective mirror assembly 5 rises or falls under the drive of the annular lifting portion 41, so that the protective mirror assembly 5 is extended or retracted. Among them, the protrusion 42 is adapted to the track groove 321, and the protrusion 42 is cylindrical, which is conducive to the sliding of the protrusion 42 in the track groove 321. The annular connecting frame 32 is provided with a bottom end and a top end which are spaced apart in the sliding direction of the protective mirror assembly 5. One end of the track groove 321 extends to form an opening at the bottom end of the annular connecting frame 32 close to the base 11, so as to facilitate the assembly of the protrusion 42 of the lifting member 4 in the track groove 321; 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 321.

[0043] According to actual needs, the protrusion 42 can be connected to the annular lifting part 41 as a whole or separately. A plurality of track grooves 321 can be arranged on the annular connecting frame 32, and the plurality of track grooves 321 are designed to be centrally symmetrical, and when the number of track grooves 321 is three or more than three, each track groove 321 is evenly distributed at an angle; a plurality of protrusions 42 can be arranged on the outer peripheral side of the annular lifting part 41, and the plurality of protrusions 42 are slidably assembled in the plurality of track grooves 321 one by one. For example, in a specific example, three track grooves 321 are arranged at intervals and evenly distributed on the annular connecting frame 32, and three protrusions 42 are arranged at intervals and evenly distributed on the outer peripheral side of the annular lifting part 41, and the three protrusions 42 are slidably assembled in the three track grooves 321 one by one, which can ensure the stability and smoothness of the annular connecting frame 32 driving the lifting member 4 to rise or fall.

[0044] See also Fig.11 In some embodiments, the lens assembly 30 is connected to the lifting member 4, wherein the lens assembly 30 includes a lens, the lens assembly 30 is fixed to the annular lifting portion 41 and accommodated in the annular lifting portion 41, and the lens assembly 30 is driven to rise or fall by the annular lifting portion 41.

[0045] See also Figures 3 to 6 The protective mirror assembly 5 includes a mounting seat 51 slidably assembled on the base 1 and connected at both ends to form a first accommodating cavity 5111, and a protective lens 52 fixed to one end of the mounting seat 51 and covering the first accommodating cavity 5111. The lifting member 4 is accommodated in the first accommodating cavity 5111 and connected to the mounting seat 51. The lifting member 4 drives the mounting seat 51 to rise or fall, thereby realizing the extension or retraction of the protective mirror assembly 5. The mounting seat 51 is provided with a first clearance groove 5112 extending along its sliding direction. The lifting member 4 at least partially passes through the first clearance groove 5112 and is slidably assembled in the track groove 321, wherein the protrusion 42 passes through the first clearance groove 5112, and the length of the first clearance groove 5112 is greater than the maximum distance of the lifting member 4 rising or falling, so that the mounting seat 51 will not interfere with the sliding of the protrusion 42.

[0046] It should be noted that the lens assembly 30 is accommodated in the first accommodating cavity 5111, and the protective lens 52 is used to protect the lens assembly 30. The lens assembly 30 can be extended or retracted together with the protective lens assembly 5, and can also be extended after the protective lens assembly 5 is extended, and retracted before the protective lens assembly 5 is retracted.

[0047] See also Figure 3 , Figure 4 and Figure 6The mounting seat 51 includes a first sleeve 511 slidably assembled on the base 1 and provided with a first accommodating cavity 5111, an annular bottom plate 512 fixed to one end of the first sleeve 511 away from the protective lens 52, and an annular top plate 513 fixed to the other end of the first sleeve 511. The annular top plate 513 can be formed by extending a certain distance inward from the top of the first sleeve 511 in the radial direction. The protective lens 52 is fixed to one end of the annular top plate 513 away from the annular bottom plate 512. The lifting member 4 is arranged between the annular bottom plate 512 and the annular top plate 513, and the lifting member 4 is elastically connected to the annular top plate 513. When the protective lens assembly 5 is not subjected to downward pressure, the lifting member 4 is always in contact with the annular bottom plate 512 under the action of elastic force. At this time, the lifting member 4 and the mounting seat 51 are closely fitted together, so that the lifting member 4 and the mounting seat 51 can be regarded as a whole, ensuring that the lifting member 4 and the mounting seat 51 rise or fall synchronously.

[0048] See also Figures 3 to 6 The telescopic lens 10 also includes an image receiving component 9 fixed to the base 1, and the image receiving component 9 is arranged opposite to the lens component 30. When the protective lens component 5 is extended, the lens component 30 moves in a direction away from the image receiving component 9, changing the distance between the lens component 30 and the image receiving component 9, thereby achieving the purpose of optical zoom.

[0049] See also Figure 3 , Figure 5 and Figure 6 The telescopic lens 10 also includes a buffer assembly 6 accommodated in the first accommodating cavity 5111, and the buffer assembly 6 is used to buffer the movement of the mounting seat 51 after being subjected to downward pressure. The buffer assembly 6 includes a guide member 61 whose two ends are respectively fixed to the annular bottom plate 512 and the annular top plate 513 and whose length extends along the sliding direction of the mounting seat 51, and an elastic member 62 whose two ends are respectively connected to the lifting member 4 and the annular top plate 513. The guide member 61 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 seat 51 will move downward and compress the elastic member 62. At this time, the elastic member 62 will be further compressed first to keep the position of the lifting member 4 stationary, avoiding the stress from being directly transmitted to the protruding portion 42 of the lifting member 4 and the annular connecting frame 32, thereby protecting the mechanism.

[0050] It should be understood that the elastic member 62 is always in a compressed state, so that when no downward pressure is applied to the protective mirror assembly 5, the lifting member 4 is always in contact with the annular bottom plate 512 under the action of the rebound force provided by the elastic member 62.

[0051] According to actual needs, the guide member 61 can be a guide rod, the elastic member 62 can be a spring, the elastic member 62 can be sleeved on the outer peripheral side of the guide member 61, and the number of guide members 61 and elastic members 62 is set to be the same as the number of protrusions 42. For example, there are three guide members 61, three elastic members 62 and three protrusions 42.

[0052] See also Fig.12 In some embodiments, the lens assembly 30 is connected to the protective lens assembly 5, wherein the lens assembly 30 includes a lens, the lens assembly 30 is fixed to the mounting seat 51 and accommodated in the first accommodating cavity 5111, and the lens assembly 30 is driven to rise or fall by the mounting seat 51. According to actual needs, the lens assembly 30 can be fixed on the first sleeve 511, the annular bottom plate 512, or the annular top plate 513.

[0053] See also Figures 3 to 6 The base 1 includes a base 11 and a second sleeve 12 fixed to the base 11 and provided with a second accommodating cavity 121. The base 11 and the second sleeve 12 can be an integral structure. The second sleeve 12 is arranged in the annular connecting frame 32, and there is a gap between the second sleeve 12 and the annular connecting frame 32 to ensure the smooth rotation of the annular connecting frame 32. The mounting seat 51 is slidably assembled in the second accommodating cavity 121, that is, the mounting seat 51 can slide relative to the base 1 to be in an extended state or a retracted state. The second sleeve 12 is provided with a second clearance groove 122 at least partially opposite to the first clearance groove 5112. The second clearance groove 122 can prevent the base 1 from interfering with the sliding of the lifting member 4. At least part of the lifting member 4 passes through the first clearance groove 5112 and the second clearance groove 122 in sequence, and is slidably assembled in the track groove 321; wherein, the protrusion 42 of the lifting member 4 passes through the first clearance groove 5112 and the second clearance groove 122 in sequence.

[0054] See also Fig.13 In some embodiments, the lens assembly 30 is connected to the base 1, wherein the lens assembly 30 includes a lens and a VCM (Voice Coil Motor), and the VCM is fixed to the base 1 through the image receiving assembly 9. 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 52 is extended, the VCM drives the lens to move upward and extend; before the protective lens 52 is retracted, the VCM drives the lens to move downward and retract.

[0055] See also Figure 8 In some embodiments, the annular rotor 31 includes a magnetic ring 311 fixed and sleeved on the outer peripheral side of the annular connecting frame 32. The magnetic ring 311 adopts multi-stage radial magnetization, which is conducive to the output of magnetic resistance torque. The magnetic ring 311 can be prepared by hot pressing, sintering and other molding technologies, and has higher residual magnetic properties.

[0056] See also Fig. 9 and Fig.10 In some embodiments, the annular rotor 31 includes a plurality of magnetic steels 312 fixed to the outer peripheral side of the annular connecting frame 32, a plurality of protruding spacers 323 are fixed to the outer peripheral side of the annular connecting frame 32, a positioning groove 322 is formed between two adjacent protruding spacers 323, and the plurality of magnetic steels 312 are fixed in the plurality of positioning grooves 322 one by one, that is, the annular rotor 31 is formed by splicing a plurality of magnetic steels 312, and the magnetic poles of the plurality of magnetic steels 312 are alternately arranged. The magnetic steels 312 can be fixed to the annular connecting frame 32 by bonding, thereby reducing the processing difficulty of the magnetic steels 312, reducing the manufacturing cost of the annular rotor 31, and reducing the edge non-magnetic area.

[0057] It should be noted that the annular connecting frame 32 can be made of magnetic conductive material, which can improve the magnetic properties of the rotor assembly 3 and the driving force of the rotor assembly 3. The annular connecting frame 32 can be rotatably arranged on the base 1 through a bearing, or transmission tracks 33 can be respectively arranged on the outer circumference of both ends of the annular connecting frame 32, and balls are arranged on the transmission tracks 33, and the balls are in contact with the base 1, so that the annular connecting frame 32 is rotatably arranged on the base 1.

[0058] See also Figure 7 and Fig.14 The stator assembly 2 includes a first annular stator 21 fixed to the base 1 and a second annular stator 22 fixed to the side of the first annular stator 21 away from the base 1. The first annular stator 21 and the second annular stator 22 are both sleeved on the outside of the annular rotor 31 and spaced apart from the annular rotor 31, wherein the first annular stator 21 and the second annular stator 22 are respectively arranged at the two magnetic ends of the magnetic ring 311 or the magnetic steel 312.

[0059] See also Fig.14 and Fig.15The first annular stator 21 includes a first yoke ring 211 fixed to the base 1, a second yoke ring 212 fixed to a side of the first yoke ring 211 away from the base 1 and enclosed with the first yoke ring 211 to form a first annular mounting groove 2112, a first annular skeleton 213 fixed to the first yoke ring 211 and accommodated in the first annular mounting groove 2112, and a first coil 214 sleeved on the outside of the first annular skeleton 213. The first yoke ring 211 and the second yoke ring 212 are respectively provided with a plurality of first claw teeth 2111 and a plurality of second claw teeth 2121 distributed along the circumferential direction at intervals on the inner sides of the first yoke ring 211 and the second yoke ring 212 close to the annular rotor 31. The first claw teeth 2111 and the second claw teeth 2121 are staggered and extend in opposite directions. When the first coil 214 is energized, the first claw teeth 2111 and the second claw teeth 2121 are excited. The second annular stator 22 includes a third yoke ring 221 fixed to the side of the first yoke ring 211 away from the base 1, a fourth yoke ring 222 fixed to the second yoke ring 212 and enclosed with the third yoke ring 221 to form a second annular mounting groove 2212, a second annular skeleton 223 fixed to the fourth yoke ring 222 and accommodated in the second annular mounting groove 2212, and a second coil 224 sleeved on the outer side of the second annular skeleton 223. The third yoke ring 221 and the fourth yoke ring 222 are respectively provided with a plurality of third claw teeth 2211 and a plurality of fourth claw teeth 2221 spaced apart along the circumferential direction on the inner sides close to the annular rotor 31. The third claw teeth 2211 and the fourth claw teeth 2221 are staggered and extend in opposite directions. When the second coil 224 is energized, the third claw teeth 2211 and the fourth claw teeth 2221 are excited.

[0060] According to actual needs, the first magnetic yoke ring 211, the second magnetic yoke ring 212, the third magnetic yoke ring 221 and the fourth magnetic yoke ring 222 are all made of magnetic conductive materials, and the first claw teeth 2111, the second claw teeth 2121, the third claw teeth 2211 and the fourth claw teeth 2221 can be processed by stamping, MIM metal injection molding, CNC and other methods on the magnetic yoke rings. The number of claw tooth pairs is the same as the number of pole pairs of the magnetic ring 311 or the magnetic steel 312. For example, the number of claw tooth pairs in one embodiment can be 30 pairs.

[0061] It should be understood that the motor composed of the stator assembly 2 and the rotor assembly 3 can achieve a smaller shoulder height and lighter weight compared to the stacking mode of the stepper motor and the gear box, and the protective lens assembly 5 can be designed to have a higher extension height with the same size. The real-time speed regulation and lifting performance optimization can be achieved by adjusting the motor driving frequency (such as using high-frequency driving when automatically retracting in a falling state); moreover, the stator assembly 2 and the rotor assembly 3 are both ring-shaped, so that the telescopic lens 10 has a regular circular appearance structure, the design is more beautiful, and the whole machine is easier to stack.

[0062] See also Figures 3 to 6The telescopic lens 10 also includes an annular protective shell 7 fixed to the end of the third yoke ring 221 away from the base 1, and an annular seal 8 fixed to the annular protective shell 7 and in sealing contact with the protective lens assembly 5, wherein the annular protective shell 7 can decorate the telescopic lens 10, and the annular seal 8 can be a sealing ring, and the annular seal 8 is in sealing contact with the outer peripheral side surface of the mounting seat 51, so that the annular seal 8 can be waterproof, thereby ensuring the sealing of the telescopic lens 10.

[0063] The above description is only an implementation mode of the present invention. It should be pointed out that, for ordinary technicians in this field, improvements can be made without departing from the creative concept of the present invention, but these all belong to 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 accommodated in the stator assembly, a lifting member connected to the rotor assembly, a protective mirror assembly slidably assembled on the base and connected to the lifting member, and a lens assembly connected to the base or the protective mirror assembly or the lifting member, characterized in that: The rotor assembly includes an annular rotor rotatably connected to the base, and an annular connecting frame fixed to the annular rotor and accommodated in the annular rotor, the inner wall of the annular connecting frame is provided with a track groove, and the track groove is inclined relative to the circumferential direction of the annular connecting frame, the lifting member is accommodated in the annular connecting frame, and the lifting member is at least partially slidably assembled in the track groove.

2. The telescopic lens according to claim 1, characterized in that: The lifting member includes an annular lifting part connected to the protective mirror assembly, and a protruding part fixed to the annular lifting part and slidably assembled in the track groove, wherein the protruding part is arranged on the outer peripheral side of the annular lifting part.

3. The telescopic lens according to claim 2, characterized in that: When the lens assembly is connected to the lifting member, the lens assembly is fixed to the annular lifting portion and is accommodated in the annular lifting portion.

4. The telescopic lens according to claim 1, characterized in that: The protective mirror assembly includes a mounting seat that is slidably assembled on the base and connected at both ends to form a first accommodating cavity, and a protective lens that is fixed to one end of the mounting seat and covers the first accommodating cavity. The lifting member is accommodated in the first accommodating cavity and connected to the mounting seat. The mounting seat is provided with a first clearance groove whose length extends along its sliding direction. The lifting member at least partially passes through the first clearance groove and is slidably assembled in the track groove.

5. The telescopic lens according to claim 4, characterized in that: The mounting seat includes a first sleeve slidably assembled on the base and provided with the first accommodating cavity, an annular bottom 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 arranged between the annular bottom plate and the annular top plate, and the lifting member is elastically connected to the annular top plate; wherein, when the protective lens assembly is not subjected to downward pressure, the lifting member always abuts against the annular bottom plate under the action of elastic force.

6. The telescopic lens according to claim 5, characterized in that: The telescopic lens also includes a buffer assembly accommodated in the first accommodating cavity, the buffer assembly includes a guide member whose two ends are respectively fixed to the annular bottom plate and the annular top plate and whose length extends along the sliding direction of the mounting seat, 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.

7. The telescopic lens according to claim 4, characterized in that: When the lens assembly is connected to the protective lens assembly, the lens assembly is fixed to the mounting seat and accommodated in the first accommodating cavity.

8. The telescopic lens according to claim 4, characterized in that: The base includes a pedestal and a second sleeve fixed to the pedestal and provided with a second accommodating cavity, the second sleeve is arranged in the annular connecting frame, the mounting seat is slidably assembled in the second accommodating cavity, the second sleeve is provided with a second clearance groove which is at least partially arranged opposite to the first clearance groove, at least a portion of the lifting member passes through the first clearance groove and the second clearance groove in sequence, and is slidably assembled in the track groove.

9. The telescopic lens according to claim 1, characterized in that: The annular rotor includes a magnetic ring fixed and sleeved on the outer peripheral side of the annular connecting frame, and the magnetic ring adopts multi-stage radial magnetization; or, the annular rotor includes a plurality of magnetic steels fixed to the outer peripheral side of the annular connecting frame, and a plurality of raised spacers are fixed on the outer peripheral side of the annular connecting frame, and a positioning groove is formed between two adjacent raised spacers, and the plurality of magnetic steels are fixed in the plurality of positioning grooves one by one.

10. The telescopic lens according to claim 1, characterized in that: The stator assembly comprises a first annular stator fixed to the base and a second annular stator fixed to a side of the first annular stator away from the base, wherein the first annular stator and the second annular stator are both sleeved on the outside of the annular rotor and spaced apart from the annular rotor; The first annular stator comprises a first magnetic yoke ring fixed to the base, a second magnetic yoke ring fixed to a side of the first magnetic yoke ring away from the base and enclosed with the first magnetic yoke ring to form a first annular mounting groove, a first annular frame fixed to the first magnetic yoke ring and accommodated in the first annular mounting groove, and a first coil sleeved on the outer side of the first annular frame, and the first magnetic yoke ring and the second magnetic yoke ring are respectively provided with a plurality of first claw teeth and a plurality of second claw teeth spaced along the circumferential direction on the inner sides close to the annular rotor, and the first claw teeth and the second claw teeth are staggered and extend towards each other; The second annular stator includes a third magnetic yoke ring fixed to the side of the first magnetic yoke ring away from the base, a fourth magnetic yoke ring fixed to the second magnetic yoke ring and enclosed with the third magnetic yoke ring to form a second annular mounting groove, a second annular skeleton fixed to the fourth magnetic yoke ring and accommodated in the second annular mounting groove, and a second coil sleeved on the outside of the second annular skeleton, and the third magnetic yoke ring and the fourth magnetic yoke ring are respectively provided with a plurality of third claw teeth and a plurality of fourth claw teeth distributed along the circumferential direction at intervals on the inner side close to the annular rotor, and the third claw teeth and the fourth claw teeth are staggered and extend in opposite directions.

11. The telescopic lens according to claim 10, characterized in that: The telescopic lens also includes an annular protective shell fixed to one end of the third magnetic yoke ring away from the base, and an annular sealing member fixed to the annular protective shell and in sealing contact with the protective lens assembly.

12. An electronic device, characterized in that: Comprising a telescopic lens as described in any one of claims 1-11.

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