Camera module focusing module

Abstract

A camera module focusing module disclosed by the present invention comprises a module bottom plate, a focusing ring, a coaxial overturning assembly, a driving assembly and an elastic limiting assembly, a fastening base is sleeved in a square groove formed in the middle of the module bottom plate, and a camera module is arranged on the fastening base. A groove formed in the side wall of the camera module is connected to a protrusion formed in the bottom of the focusing ring in a matched mode. According to the invention, the focusing cover plate and the fastening cover plate are respectively used as a gland structure of the head of the module and a clamping seat structure of the focusing ring, and are matched with the coaxial overturning assembly to form a coaxial rotating structure, so that the stress is more uniform, the camera module is prevented from being scratched due to deviation caused by manual placement, and the service life is prolonged; meanwhile, the mechanical structure and the control part of the module are simplified, and the cost is reduced; after the pressing cover and the clamping seat structure are pressed downwards, the coaxiality of the focusing ring and the camera module is guaranteed through the elastic limiting assembly, and the focusing quality is improved; and by arranging the driving assembly, the focusing mode of the module can be conveniently switched, and the practicability of the module is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of camera modules, in particular to a camera module focusing module. Background Art

[0002] The focus module, also known as the zoom module, refers to the module in the camera that can adjust the focal length. It achieves continuous changes in focal length by changing the position of the lens in the camera module or the overall position of the camera module, allowing users to freely zoom in and out of the field of view as needed. In the field of security monitoring, the focus module can help monitoring personnel capture and clearly record key information in real time, improving security prevention capabilities. In aerial photography, the focus module allows photographers to easily capture beautiful scenery at different angles and distances, improving shooting effects. In the field of video conferencing and distance education, the focus module can provide a clearer and more realistic visual communication experience, enhance communication effects, and is a key component for cameras to achieve focal length adjustment functions.

[0003] The existing focusing module for the camera; at the same time, the existing focusing module generally has the function of manual or automatic focusing. When using manual focusing, the focusing ring needs to be taken and placed from time to time. During the focusing process, the focusing ring needs to be frequently taken and placed, and the focusing ring is constantly taken from a placement table somewhere and placed on the head of the camera module. After repeated rotation and adjustment, it needs to be taken down from the camera module and placed on a placement table somewhere. This operation has a large amplitude and the action is cumbersome and time-consuming. In addition, the focusing ring is easily scratched due to human placement deviation. When using automatic focusing, the existing equipment automatic focusing adopts an image recognition module, which will cause the mechanical structure and control part to be complicated and costly. Therefore, it is necessary to design a camera module focusing module that can be used for both manual focusing and equipment focusing, which can be directly used for each other. When used for manual adjustment, the efficiency and quality can be improved. When used for equipment focusing, the equipment structure and control module can be greatly simplified, so that the cost of the whole machine can be greatly reduced. Summary of the invention

[0004] The purpose of the present invention is to provide a camera module focusing module to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a camera module focusing module, comprising a module base plate, a camera module, a focusing ring, a coaxial flip assembly, a fastening cover plate, a driving assembly and an elastic limit assembly, wherein the driving assembly is connected to the focusing ring and the coaxial flip assembly with gears, and the power output structure of the driving assembly can be opened and closed with the focusing ring and the coaxial flip assembly, a fastening base is arranged on the top of the module base plate, a camera module is installed in a square groove opened in the middle part of the fastening base, a groove arranged on the side wall of the camera module is matched and connected to a protrusion opened at the bottom of the focusing ring, and a coaxial flip assembly is arranged on the top of the fastening base, and the coaxial flip assembly comprises: a first support, a second support, a left rotating shaft, a left worm wheel, a left worm, a right rotating shaft, a right worm wheel and a right worm, and the first support and the second support are respectively A left rotating shaft and a right rotating shaft are rotatably connected, and the axes of the left rotating shaft and the right rotating shaft coincide with each other, the left rotating shaft is a hollow circular tube, the right rotating shaft passes through the left rotating shaft to the left worm gear, and the right rotating shaft is tightly fitted and rotatably connected to the left rotating shaft, the end of the left rotating shaft away from the left worm gear is fixedly connected to the fastening cover plate, the middle section of the right rotating shaft is fixedly connected to the focusing cover plate, and is connected to the fastening cover plate bearing; the focusing ring is rotatably connected in the focusing cover plate, and the top of the focusing cover plate is symmetrically installed with limit frames in the elastic limit assembly through screws, mounting rings are clamped between the limit frames, and connecting grooves are evenly opened on the inner wall of the mounting ring, and guide columns and tightening springs are respectively arranged inside the connecting grooves, the guide columns are located inside the tightening springs, one end of the guide column is slidably connected to a sliding support, and the sliding support is slidably connected to a top bead, and the top bead is pressed tightly against the inner wall of the limiting ring.

[0006] As a further technical solution of the present invention, the bottom of the module base plate is fixedly connected to a support plate in a driving assembly, and the through holes opened on the support plate are respectively rotatably connected to the left worm, the adjusting column and the right worm, the left worm wheel and the right worm wheel are respectively connected to the left worm and the right worm, and the bottom of the left worm, the right worm and the adjusting column are respectively provided with a left rotating wheel, a right rotating wheel and a center rotating wheel, and the bottom of the left rotating wheel, the right rotating wheel and the center rotating wheel are all provided with a transmission sleeve.

[0007] As a further technical solution of the present invention, the driving assembly is composed of a support plate, a left wheel, a center wheel, a right wheel, a transmission sleeve, a transmission block, a support spring, a support rod, a servo motor, a screw, a threaded sleeve, a bottom wheel, a lifting base plate and a rotating disk, and the screw is rotatably connected to the bottom of the module base plate.

[0008] As a further technical solution of the present invention, one end of the left rotating shaft and the right rotating shaft are respectively sleeved in the through holes formed in the left worm gear and the right worm gear.

[0009] As a further technical solution of the present invention, the screw is connected with a threaded sleeve, and the threaded sleeve is fixedly sleeved in the through holes symmetrically opened on the lifting base plate, a servo motor is evenly sleeved on the lifting base plate, the output end of the servo motor is fixedly connected to the support rod, and the bottom end of the screw is fixedly sleeved with a bottom rotating wheel.

[0010] As a further technical solution of the present invention, a transmission block is slidably connected to the support rod, and the bottom of the transmission block is rotatably connected to a rotating disk, a support spring is provided at the bottom of the rotating disk, and the bottom end of the support spring is fixed to the servo motor.

[0011] As a further technical solution of the present invention, a gear ring is provided on the top of the adjusting column, the gear ring is matched and connected to the focusing gear ring, and the focusing gear ring is sleeved on the bottom of the focusing ring.

[0012] As a further technical solution of the present invention, the elastic limit assembly is composed of a side bracket, a limit frame, a limit ring, a mounting ring, a closing ring, a connecting slot, a guide column, a sliding support, a top ball and a tightening spring. The limit ring is fixedly arranged on the top of the focusing ring, and the closing ring is sleeved between the limit frames.

[0013] As a further technical solution of the present invention, the support plates symmetrically arranged on the top bead are slidably connected in the side brackets, and the side brackets are evenly arranged on the inner wall of the mounting ring.

[0014] As a further technical solution of the present invention, one end of the tension spring is fixed on a sliding support, and the sliding support is located inside the connecting notch.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the camera module focusing module uses the module bottom plate as the supporting structure of the camera module, the focusing cover plate and the fastening cover plate as the pressure cover structure of the module head and the card seat structure of the focusing ring respectively, after the focusing cover plate and the fastening cover plate are buckled on the module bottom plate in sequence, the gear ring on the top of the adjustment column and the focusing tooth ring on the focusing ring cooperate with each other to form a rotating structure, and the high-precision positioning mechanism of the wave screw is used to realize the upward and downward rotation of the focusing ring, the outer circle of the ring is a gear structure, and the inner circle is an inverted The angle is processed to be funnel-shaped, which vacates the optical field of view of the camera module. At this time, rotating the adjustment column can drive the focus ring to rotate to realize the focusing process of the module. During the focusing process, the focus ring needs to be frequently picked up and placed. During the picking and placing process, the first support and the second support are used as the rotation support of the left and right shafts respectively. At the same time, the coaxially arranged left and right shafts are respectively connected to the fastening cover and the focusing cover to form a coaxially rotating pressure cover and card seat structure, which makes the force more uniform and avoids deviation caused by artificial placement, resulting in the camera module The camera module of the group is scratched, which prolongs the service life, simplifies the mechanical structure and control part of the module, and reduces the cost; after the pressure cover and the card seat structure are pressed down, elastic support is provided by the mounting ring between the limit frames, and the top of the focus ring will be limited on the annular inclined platform opened by the focus cover under the action of the tightening spring and the top ball, thereby ensuring the coaxiality of the focus ring and the camera module and improving the focusing quality; the lifting base plate in the drive assembly is used to support the servo motor, and during the focusing process, manual focusing can be performed by manually rotating the left worm, the right worm and the left turn wheel, the right turn wheel and the center turn wheel at the bottom of the adjustment column, or by rotating the bottom turn wheels on both sides at the same time, and the servo motor and the support rod are moved up by the mutual cooperation of the screw and the threaded sleeve, and the transmission block is pressed against the bottom of the transmission sleeve under the action of the support spring. When the servo motor drives the support rod and the transmission block to rotate, so that the transmission block coincides with the groove at the bottom of the transmission sleeve, the transmission block slides into the inside of the transmission sleeve, and the servo motor can be used for automatic focusing, which is convenient for switching the focusing mode and improves the practicality of the module. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0017] Figure 2 It is an exploded view of the overall structure of the present invention;

[0018] Figure 3 for Figure 2 A partial enlarged view of the middle A area;

[0019] Figure 4 for Figure 2 A partial enlarged view of the middle B area;

[0020] Figure 5 It is a right view of the overall structure of the present invention;

[0021] Figure 6 It is a top view of the overall structure of the present invention;

[0022] Figure 7 It is a partial structural exploded diagram of the present invention;

[0023] Figure 8 for Figure 7 A partial enlarged view of the middle C area;

[0024] In the figure: 1. module base plate; 2. camera module; 3. fastening base; 4. focus ring; 5. coaxial flip assembly; 6. fastening cover; 7. drive assembly; 8. focus cover; 9. elastic limit assembly; 10. gear ring; 11. focus gear ring; 12. adjustment column; 51. first support; 52. second support; 53. left shaft; 54. left worm wheel; 55. left worm; 56. right shaft; 57. right worm wheel; 58. right worm; 71. support plate; 72. left wheel; 73. middle Center wheel; 74, right wheel; 75, transmission sleeve; 76, transmission block; 77, support spring; 78, support rod; 79, servo motor; 80, screw; 81, threaded sleeve; 82, bottom wheel; 83, lifting base plate; 84, rotating disk; 90, side bracket; 91, limit frame; 92, limit ring; 93, mounting ring; 94, closing ring; 95, connecting notch; 96, guide column; 97, sliding support; 98, top ball; 99, tightening spring; floating limit platform 100. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Please see attached Figure 1 -Attached Figure 8An embodiment of the present invention is as follows: a camera module focusing module comprises a module bottom plate 1, a camera module 2, a focusing ring 4, a coaxial flip assembly 5, a fastening cover plate 6, a focusing cover plate 8, a driving assembly 7 and an elastic limit assembly 9. A fastening base 3 is arranged on the top of the module bottom plate 1. The camera module 2 is installed in a square groove opened in the middle part of the fastening base 3. The groove arranged on the side wall of the camera module 2 matches the protrusion at the funnel-shaped bottom of the focusing ring 4. A coaxial flip assembly 5 is arranged on the top of the fastening base 3. The coaxial flip assembly comprises: a first support 51 and a second support 52. A left rotating shaft 53 and a right rotating shaft 56 are rotatably connected in the first support 51 and the second support 52 respectively, and the axes of the left rotating shaft 53 and the right rotating shaft 56 coincide with each other. The focus cover 8 is rotatably connected to the focus ring 4, and the focus cover 8 is connected to an elastic limit assembly 9, which is composed of a side bracket 90, a limit frame 91, a limit ring 92, a mounting ring 93, a closed ring 94, a connecting notch 95, a guide column 96, a sliding support 97, a top bead 98 and a tightening spring 99. The limit ring 92 is fixedly arranged on the top of the focus ring 4, and the closed ring 94 is sleeved between the limit frames 91. The support plates symmetrically arranged on the top bead 98 are slidably connected to the side bracket 90, and the side bracket 90 is evenly arranged on the inner wall of the mounting ring 93; the tightening spring One end of the spring 99 is fixed on the sliding support 97, and the sliding support 97 is located inside the connecting groove 95. A mounting ring 93 is clamped between the limit frames 91, and connecting grooves 95 are evenly opened on the inner wall of the mounting ring 93. Guide pillars 96 and tightening springs 99 are respectively arranged inside the connecting grooves 95. The guide pillar 96 is located inside the tightening spring 99. One end of the guide pillar 96 is slidably connected to the sliding support 97, and the sliding support 97 is slidably connected to the top ball 98. The top ball 98 is pressed tightly against the inner wall of the limit ring 92, thereby realizing axial limitation of the focusing ring 4.

[0027] The bottom of the module bottom plate 1 is fixedly connected to the support plate 71 in the driving assembly 7, and the through holes opened on the support plate 71 are rotatably connected to the left worm 55, the adjustment column 12 and the right worm 58 respectively. The adjustment column 12 can move forward and backward in the through hole on the support plate 71; the coaxial flip assembly 5 is composed of a first support 51, a second support 52, a left shaft 53, a left worm wheel 54, a left worm 55, a right shaft 56, a right worm wheel 57 and a right worm 58. The wheel 54 and the right worm wheel 57 are respectively connected to the left worm 55 and the right worm 58 to realize transmission, and the bottom of the left worm 55, the right worm 58 and the adjusting column 12 are respectively provided with a left rotating wheel 72, a right rotating wheel 74 and a center rotating wheel 73, and the bottom of the left rotating wheel 72, the right rotating wheel 74 and the center rotating wheel 73 are all provided with a transmission sleeve 75; the driving assembly 7 is composed of a support plate 71, a left rotating wheel 72, a center rotating wheel 73, a right rotating wheel 74, a transmission sleeve 75, The module comprises a transmission block 76, a support spring 77, a support rod 78, a servo motor 79, a screw 80, a threaded sleeve 81, a bottom rotating wheel 82, a lifting base plate 83 and a rotating disk 84. The screw 80 is rotatably connected to the bottom of the module base plate 1; the through holes provided on the left worm gear 54 and the right worm gear 57 are respectively sleeved with one end of the left rotating shaft 53 and the right rotating shaft 56; the screw 80 is matched and connected with a threaded sleeve 81, and the threaded sleeve 81 is fixedly sleeved in the through holes symmetrically provided on the lifting base plate 83, and three groups of servo motors 79 are evenly sleeved on the lifting base plate 83, the output end of the servo motor 79 is fixedly connected with the support rod 78, and the bottom end of the screw 80 is fixedly sleeved with the bottom rotating wheel 82; the support rod 78 is slidably connected with the transmission block 76, and the bottom of the transmission block 76 is rotatably connected with the rotating disk 84, the bottom of the rotating disk 84 is provided with a support spring 77, and the bottom end of the support spring 77 is fixed on the servo motor 79.

[0028] The fastening cover plate 6 is concave, and the focusing cover plate 8 is convex. The focusing cover plate 8 and the free movable cover are assembled on the fastening cover plate 6. Both the concave and convex parts of the two are provided with through holes, and the right rotating shaft 56 passes through the through holes to connect the two.

[0029] The left rotating shaft 53 is a hollow circular tube, and the right rotating shaft 56 passes through the left rotating shaft 53 to the left worm gear 54, and the right rotating shaft 56 is tightly connected to the left rotating shaft 53. The end of the left rotating shaft 53 away from the left worm gear 54 is fixedly connected to the fastening cover plate 6, and the middle section of the right rotating shaft 56 is fixedly connected to the focus cover plate 8 and connected to the bearing of the fastening cover plate 6. The above structure realizes the independent movement and opening and closing of the fastening cover plate 6 and the focus cover plate 8.

[0030] The camera module 2 is installed in the square groove opened in the middle part of the fastening base 3, and a floating limit platform 100 is set in the square groove. A number of limit pins are symmetrically arranged around the floating limit platform 100. A limit sealing head is arranged on the upper end of the limit pin, and the lower end moves through the floating limit platform 100 and the compression spring in turn and is fixedly connected to the fastening base 3, so that camera modules of different heights can be put in for focusing, avoiding damage to the camera module when the focusing ring is pressed down, and facilitating the parallel fitting of the end face of the focusing ring and the end face of the camera module, ensuring that the focusing ring 4 is coaxial with the camera module 2 to be focused.

[0031] A gear ring 10 is provided on the top of the adjusting column 12, and the gear ring 10 is connected to the focusing gear ring 11, and the focusing gear ring 11 is sleeved on the bottom of the focusing ring 4, and the focusing ring 4 is driven to rotate and focus through the servo motor 79 and the adjusting column 12.

[0032] When in use, the module base plate 1 serves as the supporting structure of the camera module 2, the focus cover plate 8 and the fastening cover plate 6 serve as the pressure cover structure of the module head and the holder structure of the focus ring 4 respectively. After the focus cover plate 8 and the fastening cover plate 6 are buckled on the module base plate 1 in sequence, the gear ring 10 on the top of the adjustment column 12 cooperates with the focus tooth ring 11 on the focus ring 4 to form a rotating structure, and the high-precision positioning mechanism of the wave screw is used to realize the upward and downward rotation of the focus ring 4. The outer circle of the ring is a gear structure, and the inner circle is chamfered to form a funnel shape, which vacates the optical field of view of the camera module. At this time, the rotation of the adjustment The column 12 can drive the focus ring 4 to rotate to realize the focusing process of the module. During the focusing process, the focus ring 4 needs to be frequently picked up and placed. During the picking and placing process, the first support 51 and the second support 52 are used as the rotation support of the left rotation shaft 53 and the right rotation shaft 56 respectively. At the same time, the coaxially arranged left rotation shaft 53 and the right rotation shaft 56 are respectively connected to the fastening cover plate 6 and the focusing cover plate 8 to form a coaxial rotation structure, which makes the force more uniform, avoids the deviation of artificial placement causing the camera module to be scratched, and prolongs the service life. At the same time, the mechanical structure and control part of the module are simplified, and the Cost; after the pressure cover and the card seat structure are pressed down, the mounting ring 93 between the limit frame 91 provides elastic support, and the top of the focus ring 4 will be limited on the annular inclined platform opened on the focus cover 8 under the action of the tightening spring 99 and the top ball 98, thereby ensuring the coaxiality of the focus ring 4 and the camera module 2 and improving the focusing quality; the lifting base plate 83 in the drive assembly 7 is used to support the servo motor 79, and the focusing process can be manually focused by manually rotating the left worm 55, the right worm 58 and the left rotating wheel 72, the right rotating wheel 74 and the center rotating wheel 73 at the bottom of the adjustment column 12, or the same When the bottom rotating wheels 82 on both sides are rotated, the servo motor 79 and the support rod 78 are moved upward by the cooperation between the screw rod 80 and the threaded sleeve 81. Under the action of the support spring 77, the transmission block 76 is pressed against the bottom of the transmission sleeve 75, so that the transmission block 76 is engaged with the groove at the bottom of the transmission sleeve 75. When the servo motor 79 drives the support rod 78 and the transmission block 76 to rotate, the transmission block 76 slides into the inside of the transmission sleeve 75, which can drive the left rotating wheel 72, the right rotating wheel 74 and the center rotating wheel 73 to realize automatic focusing. The manual and automatic focusing modes are convenient to switch, which improves the practicality of the module.

[0033] Another more effective device structure in the present embodiment is convenient for switching between manual and automatic focusing modes. The module base plate 1 and the support plate 71 cooperate with each other through a U-shaped groove or a concave-convex structure of the slide rail groove to achieve relative displacement adjustment, and are fastened with a limit screw. In this way, the structure installed on the module base plate 1 and the structure installed on the support plate 71 can move forward and backward relative to each other. In manual mode, the module base plate 1 is slid backward and locked, and the worm gear is separated to realize manual flipping operation of the flipping assembly and manual focusing; in automatic mode, the module base plate 1 is slid forward and locked, and the worm gear is engaged to realize automatic flipping and automatic focusing.

[0034] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A camera module focusing module, comprising a module base plate (1), a camera module (2), a focusing ring (4), a coaxial flip assembly (5), a fastening cover plate (6), a driving assembly (7), an elastic limit assembly (9) and a floating limit platform (100), characterized in that: The driving assembly (7) is gear-connected with the focusing ring (4) and the coaxial flip assembly (5); the power output structure of the driving assembly (7) can be opened and closed with the focusing ring (4) and the coaxial flip assembly (5); a fastening base (3) is arranged on the top of the module bottom plate (1); a camera module (2) is placed on a floating limit platform (100) provided in the middle of the fastening base (3); a groove provided on the side wall of the camera module (2) is connected to a protrusion provided at the bottom of the focusing ring (4); the top of the fastening base (3) is provided with a floating limit platform (100) provided in the middle of the fastening base (3); The coaxial turning assembly (5) is provided, and the coaxial turning assembly (5) comprises: a first support (51), a second support (52), a left rotating shaft (53), a left worm wheel (54), a left worm (55), a right rotating shaft (56), a right worm wheel (57) and a right worm (58); the first support (51) and the second support (52) are respectively rotatably connected with the left rotating shaft (53) and the right rotating shaft (56), and the axes of the left rotating shaft (53) and the right rotating shaft (56) coincide with each other; the left rotating shaft (53) is a hollow circular tube, The right rotating shaft (56) passes through the left rotating shaft (53) to the left worm gear (54), the right rotating shaft (56) and the left rotating shaft (53) are tightly fitted and rotatably connected, the end of the left rotating shaft (53) away from the left worm gear (54) is fixedly connected to the fastening cover plate (6), the middle section of the right rotating shaft (56) is fixedly connected to the focus cover plate (8), and is connected to the bearing of the fastening cover plate (6); the focus ring (4) is rotatably connected to the focus cover plate (8), and the top of the focus cover plate (8) is symmetrically installed with a screw in the elastic limit assembly (9). A limiting frame (91) is provided, and a mounting ring (93) is clamped between the limiting frames (91), and connecting notches (95) are evenly provided on the inner wall of the mounting ring (93), and guide pillars (96) and tension springs (99) are respectively provided inside the connecting notches (95), and the guide pillars (96) are located inside the tension springs (99), and one end of the guide pillar (96) is slidably connected to a sliding support (97), and the sliding support (97) is slidably connected to a top bead (98), and the top bead (98) is tightly pressed against the inner wall of the limiting ring (92).

2. A camera module focusing module according to claim 1, characterized in that: The bottom of the module base plate (1) is fixedly connected to a support plate (71) in a driving assembly (7); a left worm (55), an adjusting column (12) and a right worm (58) are rotatably connected to through holes provided in the support plate (71); a left worm wheel (54) and a right worm wheel (57) are respectively connected to the left worm (55) and the right worm (58); a left rotating wheel (72), a right rotating wheel (74) and a center rotating wheel (73) are respectively provided at the bottom of the left worm (55), the right worm (58) and the adjusting column (12); and a transmission sleeve (75) is provided at the bottom of each of the left rotating wheel (72), the right rotating wheel (74) and the center rotating wheel (73).

3. The camera module focusing module according to claim 1, characterized in that: The driving assembly (7) is composed of a support plate (71), a left rotating wheel (72), a central rotating wheel (73), a right rotating wheel (74), a transmission sleeve (75), a transmission block (76), a support spring (77), a support rod (78), a servo motor (79), a screw (80), a threaded sleeve (81), a bottom rotating wheel (82), a lifting bottom plate (83) and a rotating disk (84), wherein the screw (80) is rotatably connected to the bottom of the module bottom plate (1).

4. A camera module focusing module according to claim 2, characterized in that: One end of the left rotating shaft (53) and one end of the right rotating shaft (56) are respectively sleeved in the through holes opened in the left worm wheel (54) and the right worm wheel (57).

5. The camera module focusing module according to claim 3, characterized in that: The screw rod (80) is matched with a threaded sleeve (81), and the threaded sleeve (81) is fixedly sleeved in a through hole symmetrically opened on a lifting base plate (83). A servo motor (79) is evenly sleeved on the lifting base plate (83), and the output end of the servo motor (79) is fixedly connected to a support rod (78). The bottom end of the screw rod (80) is fixedly sleeved with a bottom rotating wheel (82).

6. A camera module focusing module according to claim 5, characterized in that: The support rod (78) is slidably connected with a transmission block (76), and the bottom of the transmission block (76) is rotatably connected with a rotating disk (84), the bottom of the rotating disk (84) is provided with a support spring (77), and the bottom end of the support spring (77) is fixed on the servo motor (79).

7. The camera module focusing module according to claim 1, characterized in that: A gear ring (10) is arranged on the top of the adjustment column (12), and the gear ring (10) is connected to a focus gear ring (11), and the focus gear ring (11) is sleeved on the bottom of the focus ring (4).

8. The camera module focusing module according to claim 1, characterized in that: The elastic limiting assembly (9) is composed of a side bracket (90), a limiting frame (91), a limiting ring (92), a mounting ring (93), a closing ring (94), a connecting notch (95), a guide column (96), a sliding support (97), a top bead (98) and a tightening spring (99); the limiting ring (92) is fixedly arranged on the top of the focusing ring (4); the closing ring (94) is sleeved between the limiting frames (91); one end of the tightening spring (99) is fixed on the sliding support (97); and the sliding support (97) is located inside the connecting notch (95).

9. The camera module focusing module according to claim 8, characterized in that: The support plates symmetrically arranged on the top bead (98) are slidably connected in the side bracket (90), and the side bracket (90) is evenly arranged on the inner wall of the mounting ring (93).

10. The camera module focusing module according to claim 1, characterized in that: The floating limit platform (100) is symmetrically provided with a plurality of limit pins, the upper ends of which are provided with limit plugs, and the lower ends of which are movable through the floating limit platform (100) and the compression spring in turn and are fixedly connected to the fastening base (3), thereby ensuring that the end face of the focus ring and the end face of the camera module are parallelly fitted, and ensuring that the focus ring (4) is coaxial with the camera module (2) to be focused.

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