CN210179198U

CN210179198U - Magnetic adsorption detachable lift camera

Info

Publication number: CN210179198U
Application number: CN201920759348.7U
Authority: CN
Inventors: Zhifeng Li; 李志锋; Lei Wang; 王磊; Liangwei Zhang; 张良威
Original assignee: Leading Technology (dongtai) Co Ltd
Current assignee: Leading Technology (dongtai) Co Ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-03-24
Anticipated expiration: 2029-05-24

Abstract

The utility model discloses a magnetic force adsorbs detachable lift camera, including support frame and motor, be provided with the lifting unit that camera module and drive camera module go up and down on the support frame, lifting unit includes screw rod mechanism, the setting on screw rod mechanism the movable block and with movable block matched with guiding mechanism, the camera module has first extension, the movable block passes through the permanent magnet and adsorbs with first extension magnetic force to be connected, guiding mechanism's lower extreme is provided with and is used for the first extension complex elastic element with the movable block after-separating, the output and the screw rod mechanism of motor are connected. The utility model discloses a camera module is connected with lifting unit's detachable, and elastic element can play the effect of buffering protection, prevents that the impact force direct action from the transmission component, has reduced transmission component's damage effectively to promoted impact resistance, stability and the reliability of product, life is longer, and processing procedure yield and volume production ability are higher.

Description

Magnetic adsorption detachable lift camera

Technical Field

The utility model relates to a mechanical transmission technical field especially relates to a magnetic force adsorbs detachable lift camera.

Background

With the rapid development of science and technology, 3C electronic products have been widely used in the work and life of people, especially in mobile terminal electronic devices such as mobile phones and tablet computers, and 3C electronic products are short for computers (computers), Communication (Communication) and consumer electronics (consumer electronics). In order to meet the consumption experience of people, a high screen ratio or full screen technology becomes a main development trend of the electronic equipment, the advantages of high screen ratio or full screen atmosphere, attractiveness and the like are prominent, the consumption experience of people is met, and the screen requirement of people on the electronic equipment is higher and higher. However, as technologies such as an integrated camera under a screen are far from mature, the camera cannot penetrate through a display screen to take a picture, so that a front-facing camera is required to be designed in an area outside the display screen, and in order to realize a full-screen, the camera is often hidden on the back of the display screen, and is extended out when taking a picture, namely, the camera is designed to be a liftable camera, and a novel wave has been formed in recent years as a lifting camera technology for realizing an effective mode of the full-screen.

Among the prior art, lift camera mainly has the manual formula of popping out of pressing, manual rotation type, variable speed motor is automatic, but there is certain defect in the design of current lift camera, camera module and transmission guiding mechanism often adopt rigid connection, when the camera module receives the impact, the impact force of production can all act on transmission guiding mechanism, can make driving medium or guide produce irreversible damage such as fracture, thereby lead to the stability and the reliability difference of lift camera, life-span low grade, restricted the application and the development of lift camera.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the problem that above-mentioned current lift camera exists, provide a magnetic force adsorbs detachable lift camera.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a magnetic force adsorbs detachable lift camera, including support frame and motor, be provided with the camera module on the support frame and drive the lifting unit that camera module goes up and down, lifting unit includes lead screw mechanism, the movable block of setting on lead screw mechanism and with movable block matched with guiding mechanism, the camera module has first extension, the movable block passes through the permanent magnet and adsorbs with first extension magnetic force to be connected, first extension and guiding mechanism sliding connection, guiding mechanism's lower extreme is provided with and is used for the elastic element that is used for the first extension complex after separating with the movable block, the output and the lead screw mechanism of motor are connected.

The utility model has the advantages that: when the camera module receives external force impact and is greater than the magnetic attraction between movable block and the first extension, the first extension of camera module separates from the movable block and falls down along the guiding mechanism, the separable connection of camera module and lifting unit has been realized, the elastic element of guiding mechanism lower extreme can play the effect of buffering protection to the first extension of camera module, it is effectual to cushion, prevent impact force direct action transmission component, the damage of transmission component has been reduced effectively, thereby the shock resistance of product has been promoted, stability and reliability, long service life, process yield and volume production ability are higher, and moreover, the steam generator is simple in structure, processing, convenience such as equipment, low in production cost, and further, the application and the development of product have been enlarged.

In some embodiments, the screw mechanism includes a screw coaxially connected to the output shaft of the motor, the guide mechanism includes a guide rod disposed parallel to the screw, the elastic element is a spring sleeved on the guide rod and fixed at a lower end thereof, the moving block is provided with a first through hole slidably connected to the guide rod, and the first protruding portion is provided with a second through hole slidably connected to the guide rod.

In some embodiments, the moving block is provided with a third through hole for seating the permanent magnet.

In some embodiments, the moving block is provided with a damping plate cooperating with the first extension.

In some embodiments, the output shaft of the motor is connected to the screw mechanism through a transmission.

In some embodiments, the transmission comprises a housing, an eccentric transmission assembly is arranged in the housing, the eccentric transmission assembly comprises an eccentric shaft connected with the output shaft of the motor, an eccentric wheel is arranged on the eccentric shaft, the eccentric wheel and the eccentric shaft are axially fixed and can rotate relatively in the circumferential direction, the eccentric wheel and the eccentric shaft perform circumferential motion along the axis of the output shaft of the motor and the eccentric wheel and the inner wall of the housing perform friction fit to rotate, and the eccentric wheel is connected with the screw rod mechanism through an oldham coupling.

In some embodiments, the upper end of the eccentric shaft is provided with a first limiting portion matched with the eccentric wheel, the diameter of the first limiting portion is larger than that of the eccentric shaft, the lower end in the shell is provided with a limiting sleeve matched with the eccentric wheel, the eccentric wheel is positioned between the first limiting portion and the limiting sleeve, one end, away from the first limiting portion, of the eccentric shaft is provided with a first hole body connected with the output shaft of the motor, and the top of the limiting sleeve is provided with a first avoidance through hole for the eccentric shaft to pass through.

In some embodiments, the two ends of the eccentric shaft are respectively provided with a second limiting part matched with the eccentric wheel, the diameter of the second limiting part is larger than that of the eccentric shaft, the eccentric wheel is positioned between the two second limiting parts, and the second limiting part at the lower end is provided with a second hole body connected with the output shaft of the motor.

In some embodiments, the inner wall of the housing and the surface of the eccentric wheel are respectively provided with an anti-slip layer.

In some embodiments, the surface of the eccentric wheel is uniformly distributed with a plurality of first groove bodies along the circumferential direction of the surface, and the inner wall of the shell is uniformly distributed with a plurality of second groove bodies axially arranged along the circumferential direction of the surface.

In addition, in the technical solutions of the present invention, the technical solutions can be implemented by adopting conventional means in the art, which are not specifically described.

Drawings

Fig. 1 is the utility model relates to a magnetic force adsorbs first stereogram of detachable lift camera.

Fig. 2 is the utility model relates to a magnetic force adsorbs second stereogram of detachable lift camera.

Fig. 3 is a perspective view of the transmission of the present invention.

Fig. 4 is an exploded view of the transmission of the present invention.

Fig. 5 is a first cross-sectional view of the transmission of the present invention.

Fig. 6 is a second cross-sectional view of the transmission of the present invention.

In the drawings, the reference numerals indicate that the transmission 1, the housing 11, the fourth through hole 111, the second groove 112, the flange 113, the eccentric transmission assembly 12, the eccentric shaft 121, the first stopper 1211, the first hole 1212, the second stopper 1213, the second hole 1214, the eccentric wheel 122, the second protrusion 1221, the first groove 1222, the oldham coupling 13, the fourth hole 1301, the fifth hole 1302, the first slider 131, the sliding slot 1311, the second slider 132, the first protrusion 1321, the second protrusion 1322, the third hole 1323, the stopper sleeve 14, the first escape through hole 141, the support frame 2, the first passage 21, the seal ring 22, the mounting hole 23, the motor 3, the camera module 4, the first protrusion 41, the second through hole 411, the lift assembly 5, the lead screw mechanism 51, the lead screw 511, the guide mechanism 52, the guide rod 521, the moving block 53, the first through hole 531, the third through hole 532, the permanent magnet 54, the elastic element 55, a buffer plate 56.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. It should be further noted that the terms "inner", "outer", "circumferential", "axial", "upper", "lower", "top", and the like are used for indicating or indicating the relative orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of describing and simplifying the present invention, and do not indicate or imply that the elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore are not to be construed as limiting the present invention, and the terms "first", "second", and the like are only used for descriptive purposes and are not to be construed as indicating or implying relative importance.

Example (b):

a magnetic adsorption detachable lifting camera is disclosed, as shown in figures 1-6, comprising a support frame 2 and a motor 3, a camera module 4 and a lifting assembly 5 for driving the camera module 4 to lift are arranged on the support frame 2, the lifting assembly 5 comprises a screw rod mechanism 51, a moving block 53 arranged on the screw rod mechanism 51 and a guide mechanism 52 matched with the moving block 53, the camera module 4 is provided with a first protruding part 41, the moving block 53 is connected with the first protruding part 41 through a permanent magnet 54 in a magnetic adsorption manner, namely, the first protruding portion 41 of the camera module 4 and the moving block 53 can be detachably connected, the first protruding portion 41 is slidably connected to the guide mechanism 52, the lower end of the guide mechanism 52 is provided with an elastic element 55 for matching with the first protruding portion 41 separated from the moving block 53, the elastic element 55 is usually located at the initial position of the first protruding portion 41, and the output end of the motor 3 is connected to the screw mechanism 51. The screw mechanism 51 may be replaced with another mechanism capable of moving up and down the moving block 53 in the related art.

The utility model discloses in the use, motor 3 drive lead screw mechanism 51 rotates, moves camera module 4 and movable block 53 and can carry out linear motion along lead screw mechanism 51 and guiding mechanism 52 together to the realization is moved the lift of camera module 4, promptly camera module 4 stretch out and hide. When the external force impact received by the camera module 4 is larger than the magnetic attraction force between the moving block 53 and the first protruding portion 41, the first extension part 41 of the camera module 4 is separated from the moving block 53 and falls down along the guide mechanism 52, so that the camera module 4 and the lifting assembly 5 can be connected in a separable way, the impact force is prevented from directly acting on the transmission component, the damage of the transmission component is effectively reduced, and after the first protruding part 41 of the camera module 4 contacts with the elastic element 55 at the lower end of the guide mechanism 52, the elastic element 55 can transmit the impact force to the outside to play a role of buffering and protecting, has good buffering effect, thereby improving the shock resistance, stability and reliability of the product, having longer service life, higher process yield and mass production capability, and the structure is simple, the processing, the assembly and the like are convenient, the production cost is low, and the application and the development of products are further expanded.

Generally, the permanent magnet 54 is a magnet capable of retaining high remanence for a long time in an open circuit state, and is also called a hard magnet, for example, a permanent magnet made of a ferrite permanent magnetic material or a magnetic steel, and preferably a magnetic steel, and the magnetic steel has the characteristics of high hardness, high coercive force value, high temperature resistance, strong corrosion resistance, and the like, and has good permanent magnetic properties, and after being magnetized in saturation, the permanent magnet can still retain strong and stable magnetism for a long time after an external magnetic field is removed.

Preferably, the lead screw mechanism 51 includes a lead screw 511 coaxially connected to the output shaft of the motor 3, the moving block 53 is in threaded connection with the lead screw 511, the guiding mechanism 52 includes a guiding rod 521 parallel to the lead screw 511, the elastic element 55 is a spring sleeved on the guiding rod 521 and fixed at the lower end thereof, the moving block 53 is provided with a first through hole 531 slidably connected to the guiding rod 521, the first protruding portion 41 is provided with a second through hole 411 slidably connected to the guiding rod 521, and generally, the first protruding portion 41 is further provided with a through hole matched with the lead screw 511.

Preferably, the moving block 53 is provided with a third through hole 532 for placing the permanent magnet 54, and the permanent magnet 54 is fixedly installed in the third through hole 532, so that the installation is convenient, the structure is compact, and the stability and the firmness are higher.

Preferably, the moving block 53 is provided with a buffer plate 56 which is matched with the first protruding portion 41, the buffer plate 56 is located between the moving block 53 and the first protruding portion 41, when the external force impact on the camera module 4 is greater than the magnetic attraction force between the moving block 53 and the first protruding portion 41, the first protruding portion 41 of the camera module 4 is separated from the moving block 53 and falls down along the guiding mechanism 52, after the first protruding portion 41 of the camera module 4 is contacted with the elastic element 55 at the lower end of the guiding mechanism 52, the camera module 4 stops moving after the buffering protection of the elastic element 55, the screw mechanism 51 rotates to make the moving block 53 fall down, the moving block 53 can be magnetically attracted and connected with the first protruding portion 41 again when falling to a certain position, and since a certain impact force is generated when the moving block 53 is magnetically attracted and connected with the first protruding portion 41 again, the buffer plate 56 can play a role in buffering protection, the moving block 53 is prevented from directly touching the first extension portion 41, which is safer and more reliable.

Preferably, the buffer plate 56 can be made of rubber, polyurethane, foam or the like, the rubber has the advantages of good elasticity, high strength, low price and the like, the polyurethane has the advantages of high flexibility, rebound resilience, mechanical strength, oxidation stability, excellent oil resistance and the like, and the foam has the advantages of elasticity, light weight, quick pressure-sensitive fixation, convenience in use, free bending, ultrathin volume, reliable performance and the like.

Preferably, the output shaft of the motor 3 is connected with the screw mechanism 51 through the transmission 1, so that not only the output torque is increased, but also the rotating speed of the screw mechanism 51 is convenient to adjust, and therefore the lifting speed of the camera module 4 can be better controlled.

Preferably, the transmission 1 comprises a housing 11, an eccentric transmission assembly 12 is arranged in the housing 11, the eccentric transmission assembly 12 comprises an eccentric shaft 121 connected with an output shaft of the motor 3, an eccentric wheel 122 is arranged on the eccentric shaft 121, the eccentric wheel 122 is axially fixed with the eccentric shaft 121 and can rotate relatively in a circumferential direction, namely a radial direction, when the eccentric wheel 122 and the eccentric shaft 121 perform a circular motion along the axis of the output shaft of the motor 3, the eccentric wheel 122 is in friction fit with the inner wall of the shell 11 for rotation, the eccentric wheel 122 is connected with the screw rod mechanism 51 through an Oldham coupling 13, the Oldham coupling 13 is usually positioned at one end of the shell 11 far away from the motor 3, the Oldham coupling 13 can automatically compensate the relative displacement between the two shafts during eccentric transmission, thereby converting the cycloidal motion of the eccentric transmission assembly 12 into stable fixed-shaft rotation for output and transmitting larger torque motion. In addition, the oldham coupling 13 can also be replaced by a universal coupling, but the universal coupling has a complex structure, occupies a large space and has high cost.

When in use, the motor 3 drives the eccentric shaft 121 to rotate, the eccentric wheel 122 and the eccentric shaft 121 carry out circular motion along the axis of the output shaft of the motor 3 and enable the eccentric wheel 122 to rotate in friction fit with the inner wall of the shell 11, meanwhile, the eccentric wheel 122 can be connected with the screw rod mechanism 51 through the crosshead shoe coupling 13 to carry out transmission output, thereby realizing speed change, a friction type eccentric transmission structure is adopted to replace a complex gear set or a worm gear and the like, the structure is simple, the number of parts is small, the size is small, the manufacture is easy, the transmission is stable, the noise is low, the energy loss is low, the wear resistance is good, the torque which can be output is large, the overload protection is realized, a larger transmission ratio can be achieved in a smaller space, the transmission ratio can be continuously and smoothly adjusted, the manufacturing process difficulty and the production cost are reduced, the service life is, the process yield and the mass production capacity of the product are improved, and the application and the development of the product are further expanded.

Preferably, the oldham coupling 13 includes a first slider 131 engaged with the eccentric 122 and a second slider 132 engaged with the screw mechanism 51, two end surfaces of the first slider 131 are respectively provided with a sliding slot 1311, the two sliding slots 1311 are perpendicular to each other, the second slider 132 is provided with a first protrusion 1321 engaged with the sliding slot 1311, and the eccentric 122 is provided with a second protrusion 1221 engaged with the sliding slot 1311. When the cycloidal motion of the eccentric wheel 122 is converted into stable fixed-axis rotation through the Oldham coupling 13 for output, that is, the second slider 132 outputs the fixed-axis rotation, and the stability and reliability are high.

Preferably, the second slider 132 is provided with a second protruding portion 1322 connected to the screw mechanism 51, the second protruding portion 1322 is provided with a third hole 1323 connected to the screw mechanism 51, the housing 11 is provided with a fourth through hole 111 matched with the second protruding portion 1322, and the fourth through hole 111 through which the second protruding portion 1322 of the second slider 132 passes is convenient to connect to the screw mechanism 51, so that the operation is simple and convenient. Further, the cross section of the third hole 1323 may be non-circular or polygonal such as triangle, rectangle, etc., and the screw mechanism 51 may be provided with a connecting portion matched with the shape of the third hole 1323, so that the connecting portion may not rotate at the third hole 1323, the operation is more convenient, and the stability and reliability are better.

Preferably, as shown in fig. 5, the upper end of the eccentric shaft 121 is provided with a first limit portion 1211 matched with the eccentric wheel 122, the diameter of the first limit portion 1211 is greater than the diameter of the eccentric shaft 121, the lower end in the housing 11 is provided with a limit sleeve 14 matched with the eccentric wheel 122, the eccentric wheel 122 is located between the first limit portion 1211 and the limit sleeve 14, one end of the eccentric shaft 121, which is far away from the first limit portion 1211, is provided with a first hole 1212 connected with the output shaft of the motor 3, because the eccentric shaft 121 is to perform eccentric rotation, the first hole 1212 is an eccentric hole of the eccentric shaft 121, i.e. the first hole 1212 is different from the axis of the eccentric shaft 121, usually the first hole 1212 may be coaxial with or different from the first limit portion 1211, the top of the limit sleeve 14 is provided with a first avoiding through hole 141 for the eccentric shaft 121 to pass through, the oldham coupling 13 and the eccentric transmission assembly 12 can be limited in the housing 11 by the, and the position-limiting sleeve 14 and the first position-limiting part 1211 are respectively matched with the eccentric wheel 122, so that the eccentric wheel 122 can be limited to move along the axial direction of the eccentric shaft 121, and the structure is simple, the assembly is convenient, and the stability and the reliability are higher. In addition, the first hole body 1212 can also adopt a D-shaped hole and the like, so that the connection is more convenient and the stability is better.

Preferably, the oldham coupling 13 is provided with a fourth hole 1301 matched with the first limit portion 1211, the fourth hole 1301 is generally provided on the second slide block 132 of the oldham coupling 13, the first slide block 131 of the oldham coupling 13 is provided with an avoiding through hole for the first limit portion 1211 to pass through, the first hole 1212 is an eccentric hole, and the first hole 1212 and the first limit portion 1211 are coaxial, that is, the first limit portion 1211 and the output shaft of the motor 3 are coaxial. During the use process, when the eccentric shaft 121 performs a circular motion along the axis of the output shaft of the motor 3, the first position-limiting part 1211 performs a fixed-axis rotation in the fourth hole body 1301, so that the first position-limiting part 1211 can bear a radial load during the eccentric transmission, thereby sharing the acting force borne by the output shaft of the motor 3, and the stability and the reliability are higher.

Preferably, as shown in fig. 6, the two ends of the eccentric shaft 121 are respectively provided with a second limit portion 1213 engaged with the eccentric wheel 122, the diameter of the second limit portion 1213 is greater than the diameter of the eccentric shaft 121, the eccentric wheel 122 is located between the two second limit portions 1213, the second limit portion 1213 at the lower end is provided with a second hole 1214 connected with the output shaft of the motor 3, and the two second limit portions 1213 can limit the axial sliding of the eccentric wheel 122 along the eccentric shaft 121, which is more stable and reliable. In addition, the second hole 1214 can also adopt a D-shaped hole and the like, so that the connection is more convenient and the stability is better.

Preferably, the oldham coupling 13 is provided with a fifth hole 1302 matched with the second limit portion 1213 at the upper end, the fifth hole 1302 is usually provided on the second slide block 132 of the oldham coupling 13, the first slide block 131 of the oldham coupling 13 is provided with an avoiding through hole for the first limit portion 1211 to pass through, the second hole 1214 is coaxial with the two second limit portions 1213, i.e. the second hole 1214 is a central hole of the second limit portion 1213, the two second limit portions 1213 are coaxial with the output shaft of the motor 3, and an eccentric portion is formed between the two second limit portions 1213. In the using process, when the eccentric shaft 121 performs circular motion along the axis of the output shaft of the motor 3, the two second limiting portions 1213 perform fixed-axis rotation, and the second limiting portion 1213 at the lower end performs fixed-axis rotation in the fifth hole 1302, so that the second limiting portions 1213 can bear radial load during eccentric transmission, thereby sharing the acting force borne by the output shaft of the motor 3, and the stability and the reliability are higher. In addition, the second stopper portion 1213 may be coaxial with the eccentric shaft 121, and in this case, the second hole body 1214 and the second stopper portion 1213 may have different axial centers, that is, the second hole body 1214 is an eccentric hole, but in this case, the two second stopper portions 1213 also perform eccentric motion and cannot better receive the radial load during eccentric transmission.

Preferably, the material of the housing 11 and the eccentric wheel 122 is one of metal, polymer material or a combination of the two, the polymer material may be engineering plastic, rubber, synthetic resin, etc., and the combination of the metal material and the polymer material may be the metal material coated with the polymer material, or the metal material and the polymer material are alternately combined in multiple layers, so that the structure is simple, the production and the processing are convenient, the service life is long, and the production cost is reduced. When the volume of the housing 11 and the eccentric wheel 122 is large, the materials of the housing 11 and the friction sleeve 123 are preferably metal or engineering plastics with high strength, etc. in order to ensure the overall structural strength.

Preferably, the inner wall of the housing 11 and the surface of the eccentric wheel 122 are respectively provided with an anti-slip layer, and the anti-slip layer can be formed by a rubber sleeve, a frosting treatment or a spraying anti-slip coating, so that the friction force is increased in friction transmission, the slipping between transmission parts is prevented, and the stability, reliability and safety of the transmission 1 are improved.

Preferably, the surface of the eccentric wheel 122 is uniformly distributed with a plurality of first grooves 1222 along the circumferential direction thereof, the housing 11 has a cylindrical inner cavity, the inner wall of the housing 11 is uniformly distributed with a plurality of second grooves 112 along the circumferential direction thereof, the grooves can be processed by knurling, shaving, stamping, casting, turning, milling, planing, laser engraving, and the like, preferably knurling, shaving or stamping, so as to increase the friction force, thereby ensuring better friction transmission, and the processing is convenient and convenient for mass production.

Preferably, the plurality of first grooves 1222 are staggered and meshed or axially disposed, for example, a cross-hatched groove or a straight groove may be formed on the surface of the eccentric 122 by knurling, so that the friction transmission effect is better.

Preferably, the end of the housing 11 away from the fourth through hole 111 is provided with a flange 113 for matching with the motor 3, and the connection between the housing 11 and the motor 3 is facilitated through the flange 113, which is more stable and secure, and a welding connection mode can be generally adopted.

Preferably, be provided with on the support frame 2 with camera module 4 sliding connection's first passageway 21, camera module 4 can be followed first passageway 21 and go up and down in order to stretch out and hide, the exit of first passageway 21 is provided with the sealing washer 22 with camera module 4 matched with, can prevent dust, water etc. entering through sealing washer 22, and is safer, reliable, still is provided with a plurality of mounting holes 23 on the support frame 2 to carry out fixed connection with other equipment.

The foregoing description is only illustrative of some embodiments of the present invention, and it should be understood that modifications and substitutions can be made by those skilled in the art without departing from the inventive concept, and all such modifications and substitutions should be considered within the scope of the appended claims. In this case all the details may be replaced with equivalent elements, and the materials, shapes and dimensions may be any.

Claims

1. The magnetic adsorption separable lifting camera is characterized by comprising a support frame (2) and a motor (3), wherein the support frame (2) is provided with a camera module (4) and a lifting assembly (5) for driving the camera module (4) to lift, the lifting assembly (5) comprises a screw rod mechanism (51), a moving block (53) arranged on the screw rod mechanism (51) and a guide mechanism (52) matched with the moving block (53), the camera module (4) is provided with a first extending part (41), the moving block (53) is in magnetic adsorption connection with the first extending part (41) through a permanent magnet (54), the first extending part (41) is in sliding connection with the guide mechanism (52), the lower end of the guide mechanism (52) is provided with an elastic element (55) matched with the first extending part (41) separated from the moving block (53), and an output shaft of the motor (3) is connected with the screw rod mechanism (51).

2. The magnetic adsorption separable lifting camera head as claimed in claim 1, wherein the lead screw mechanism (51) comprises a lead screw (511) coaxially connected with an output shaft of the motor (3), the guide mechanism (52) comprises a guide rod (521) arranged in parallel with the lead screw (511), the elastic element (55) is a spring sleeved on the guide rod (521) and fixed at the lower end thereof, the moving block (53) is provided with a first through hole (531) slidably connected with the guide rod (521), and the first protruding part (41) is provided with a second through hole (411) slidably connected with the guide rod (521).

3. The magnetic adsorption separable lifting camera head as claimed in claim 1, wherein the moving block (53) is provided with a third through hole (532) for placing the permanent magnet (54).

4. The magnetic adsorption separable lifting camera head as claimed in claim 1, wherein a buffer plate (56) matched with the first protrusion (41) is disposed on the moving block (53).

5. A magnetic force adsorption detachable lifting camera head according to any one of claims 1 to 4, characterized in that the output shaft of the motor (3) is connected with the screw mechanism (51) through a transmission (1).

6. The magnetic adsorption separable lifting camera head according to claim 5, the speed changer (1) comprises a shell (11), an eccentric transmission assembly (12) is arranged in the shell (11), the eccentric transmission component (12) comprises an eccentric shaft (121) connected with an output shaft of the motor (3), an eccentric wheel (122) is arranged on the eccentric shaft (121), the eccentric wheel (122) and the eccentric shaft (121) are axially fixed and can rotate relatively in the circumferential direction, the eccentric wheel (122) and the eccentric shaft (121) carry out circular motion along the axis of the output shaft of the motor (3), and the eccentric wheel (122) is in friction fit with the inner wall of the shell (11) to rotate, the eccentric wheel (122) is connected with the screw rod mechanism (51) through an Oldham coupling (13).

7. The magnetic adsorption separable lifting camera head as claimed in claim 6, wherein a first position-limiting portion (1211) is disposed at an upper end of the eccentric shaft (121) and is engaged with the eccentric wheel (122), a diameter of the first position-limiting portion (1211) is greater than a diameter of the eccentric shaft (121), a position-limiting sleeve (14) is disposed at a lower end of the housing (11) and is engaged with the eccentric wheel (122), the eccentric wheel (122) is disposed between the first position-limiting portion (1211) and the position-limiting sleeve (14), a first hole (1212) connected to an output shaft of the motor (3) is disposed at an end of the eccentric shaft (121) away from the first position-limiting portion (1211), and a first avoiding through hole (141) is disposed at a top of the position-limiting sleeve (14) and is used for the eccentric shaft (121) to pass through.

8. The magnetic adsorption separable lifting camera according to claim 6, wherein the eccentric shaft (121) is provided at both ends thereof with second position-limiting portions (1213) respectively engaged with the eccentric wheel (122), the diameter of the second position-limiting portions (1213) is larger than the diameter of the eccentric shaft (121), the eccentric wheel (122) is located between the two second position-limiting portions (1213), and the second position-limiting portions (1213) at the lower end are provided with second holes (1214) connected with the output shaft of the motor (3).

9. The magnetic adsorption separable lifting camera head as claimed in claim 6, wherein the inner wall of the housing (11) and the surface of the eccentric wheel (122) are respectively provided with an anti-slip layer.

10. The magnetic adsorption separable lifting camera head as claimed in claim 6, wherein a plurality of first grooves (1222) are uniformly distributed on the surface of the eccentric wheel (122) along the circumferential direction thereof, and a plurality of second grooves (112) are axially arranged on the inner wall of the housing (11) along the circumferential direction thereof.