Automatic mechanical focusing mechanism of camera

Abstract

The invention relates to the technical field of electric focusing, and provides an automatic mechanical focusing mechanism of a camera. A focusing driving assembly is fixedly installed on a base, the output end of the focusing driving assembly is connected with a rotating gear ring through a belt, the rotating gear ring is rotationally connected with the base, and a shifting fork block assembly is arranged on the upper side of the rotating gear ring; the shifting fork block assembly is connected with a swing ring rotationally arranged on the rotary gear ring in a meshed mode, the shifting fork block assembly is connected with the rotary driving assembly, the rotary driving assembly is arranged on the base, the three elastic clamping assemblies are evenly arranged on the rotary gear ring in a circumferential array mode, and the rotary gear ring is used for clamping a camera. A limiting block is fixedly installed on the rotating gear ring and used in cooperation with a limiting groove formed in the swing ring, three-point clamping can be carried out on the camera at any angle, 360-degree infinite rotation can be carried out after clamping, the central area is not shielded, and it is guaranteed that the visual field of the camera is not shielded by the mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of electric focusing, with an ICP classification number of G03B13 / 34, and in particular to an automatic mechanical focusing mechanism for a camera. Background Art

[0002] With the rapid development of science and technology, cameras have become an indispensable part of people's lives and work. Whether it is a smartphone, surveillance equipment or smart wearable device, the camera plays a vital role. When using the camera, users often need to manually adjust the camera's exposure, focus, white balance and other parameters according to different shooting scenes to ensure the shooting effect.

[0003] As disclosed in application number: CN201620907822.2, a camera focusing device includes an in-and-out robot mechanism for clamping and transferring a camera, a camera focusing mechanism for clamping the camera and rotating the camera, a camera clamping mechanism for controlling the camera focusing mechanism to clamp or loosen the camera, and an up-and-down robot mechanism for controlling the up-and-down movement of the camera focusing mechanism, the camera clamping mechanism is fixed to the up-and-down robot mechanism, the camera focusing mechanism is fixedly supported on the camera clamping mechanism, and the in-and-out robot mechanism is arranged below the camera focusing mechanism.

[0004] In the existing device, the camera must be fixed by a clamping mechanism during the focusing process, and then the camera is adjusted by a rotating device to achieve focal length adjustment. However, this process cannot achieve synchronous operation of clamping and rotation, which affects the speed and efficiency of focusing. Summary of the invention

[0005] In order to solve the problem that the existing device cannot realize the synchronous operation of clamping and rotating, thereby affecting the speed and efficiency of focusing, the present invention provides an automatic mechanical focusing mechanism for a camera to solve this problem.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A camera automatic mechanical focusing mechanism comprises: a base, a focusing drive assembly, a rotating gear ring, a fork block assembly, a swing ring, a rotating drive assembly, an elastic clamping assembly and a limit block, wherein the focusing drive assembly is fixedly mounted on the base, the output end of the focusing drive assembly is connected to the rotating gear ring through a belt, the rotating gear ring is rotationally connected to the base, the fork block assembly is arranged on the upper side of the rotating gear ring, the fork block assembly is meshedly connected to the swing ring rotationally arranged on the rotating gear ring, the fork block assembly is connected to the rotating drive assembly, the rotating drive assembly is arranged on the base, three groups of elastic clamping assemblies are arranged, and the three groups of elastic clamping assemblies are evenly arranged in a circumferential array on the rotating gear ring, the rotating gear ring is used to clamp the camera, and the limit block is fixedly mounted on the rotating gear ring, and the limit block is used in conjunction with a limit groove provided on the swing ring.

[0008] Preferably, the focusing drive assembly comprises: a servo motor, a mounting plate and a driving wheel, the servo motor is fixedly mounted on the mounting plate, the mounting plate is fixedly mounted on the base, the output end of the servo motor is fixedly connected to the driving wheel, and the driving wheel is connected to the rotating gear ring through a belt.

[0009] Preferably, the rotating gear ring includes: a rotating gear ring body, a sliding outer ring, a sliding inner ring and a slide rail, the rotating gear ring body is connected to the driving wheel through a belt, the lower side of the rotating gear ring body is fixedly connected to the sliding inner ring, the sliding inner ring is slidingly connected to the inner wall of the slide rail, the outer wall of the slide rail is slidingly connected to the sliding outer ring, the sliding outer ring is fixedly connected to the base, the swing ring is rotatably arranged on the rotating gear ring body, and the elastic clamping assembly is arranged on the lower side of the rotating gear ring body.

[0010] Preferably, the elastic clamping assembly includes: a sliding block, a clamping head, a sliding fixed block and a first elastic element, the sliding block is slidably arranged on the lower side of the rotating gear ring body, the sliding block is fixedly connected to the sliding fixed block arranged on the upper side of the rotating gear ring body, the front end of the sliding block is fixedly connected to the clamping head, the sliding block is fixedly connected to one end of the first elastic element, the other end of the first elastic element is fixedly connected to the rotating gear ring body, a limiting block is arranged on the upper side of the sliding fixed block, and the limiting block is used in conjunction with a limiting groove opened on the swing ring.

[0011] Preferably, an oblong limiting groove is provided on the swing ring, and the swing ring cooperates with the limiting block through the oblong limiting groove. The inner wall of the swing ring is provided with gear teeth, and the swing ring is meshed and connected with the fork block assembly through the gear teeth.

[0012] Preferably, the fork block assembly includes: a fork block body, a second elastic element, a fixed disk and a pressure plate, the fixed disk is fixedly mounted on the base, one end of the second elastic element is connected to the fixed disk, the other end of the second elastic element is connected to the fork block body, the pressure plate is fixedly mounted on the fixed disk, and the fork block body is used in conjunction with the pressure plate, the swing ring and the rotation drive assembly respectively.

[0013] Preferably, the rotation drive assembly includes: a rotating ring, a driving arm, a driving head, a driving cylinder and a cylinder mounting seat, the rotating ring is rotatably set on a fixed plate, one end of the driving arm is fixedly connected to the rotating ring, the other end of the driving arm is hingedly connected to one end of the driving head, the other end of the driving head is fixedly connected to the output end of the driving cylinder, the driving cylinder is hingedly set on the cylinder mounting seat, the cylinder mounting seat is fixedly connected to the base, and the rotating ring is provided with a pushing groove used in conjunction with the fork block body.

[0014] Preferably, the fork block body comprises: a limit head, a clamping block and a connecting part, the limit head, the clamping block and the connecting part are an integrated structure, the limit head is used in conjunction with the pressure plate, the clamping block extends into the push groove and is meshed with the swing ring, and the connecting part is fixedly connected to one end of the second elastic element.

[0015] The advantages of the present invention are as follows: the present invention drives the fork block assembly by using a rotating drive assembly to disengage the fork block assembly from the meshing with the swing ring, and the swing ring can rotate freely, so that the limit block can slide in the oblong limit groove of the swing ring, and then under the action of the spring in the elastic clamping assembly, the elastic clamping assembly drives the limit block to move, so that the front end of the elastic clamping assembly clamps the camera, and at this time, starting the focus driving assembly can drive the rotating gear ring to rotate, thereby achieving the purpose of focusing, after focusing is completed, the rotating drive assembly is reset, the fork block assembly clamps the swing ring, and then the position of the limit block is fixed, because the limit block is fixed to the rotating gear ring through the elastic clamping assembly, the position of the rotating gear ring is fixed and no longer rotates, thereby ensuring the stability of focusing, the present invention can clamp the lens group of the camera at any angle at three points and make 360° infinite rotation after clamping, and does not block the central area to ensure that the field of view of the camera is not blocked by the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the internal swing ring of the present invention;

[0019] Figure 3 is a side view of the focus drive assembly of the present invention;

[0020] Figure 4 It is a schematic structural diagram of the rotating gear ring angle 1 of the present invention;

[0021] Figure 5It is a structural schematic diagram of the rotating gear ring angle 2 of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the elastic clamping assembly of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the swing ring of the present invention;

[0024] Figure 8 It is a structural schematic diagram of the fork block assembly of the present invention;

[0025] Fig. 9 It is a structural schematic diagram of the rotary drive assembly of the present invention;

[0026] Fig.10 It is a structural schematic diagram of the fork block body of the present invention.

[0027] Description of reference numerals:

[0028] 1. Base; 2. Focusing drive assembly; 3. Rotating gear ring; 4. Fork block assembly; 5. Swinging ring; 6. Rotating drive assembly; 7. Elastic clamping assembly; 8. Limit block; 21. Servo motor; 22. Mounting plate; 23. Driving wheel; 31. Rotating gear ring body; 32. Sliding outer ring; 33. Sliding inner ring; 34. Slide rail; 71. Sliding block; 72. Clamping head; 73. Sliding fixed block; 74. First elastic element; 51. Long circular limit groove; 41. Fork block body; 42. Second elastic element; 43. Fixed disk; 44. Pressing plate; 61. Rotating ring; 62. Driving arm; 63. Driving head; 64. Driving cylinder; 65. Cylinder mounting seat; 66. Pushing groove; 411. Limiting head; 412. Clamping block; 413. Connecting part. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0032] Embodiment 1, combined with Figure 1 and Figure 2 To explain:

[0033] A camera automatic mechanical focusing mechanism comprises: a base 1, a focusing drive assembly 2, a rotating gear ring 3, a fork block assembly 4, a swing ring 5, a rotating drive assembly 6, an elastic clamping assembly 7 and a limit block 8, wherein the focusing drive assembly 2 is fixedly mounted on the base 1, the output end of the focusing drive assembly 2 is connected to the rotating gear ring 3 through a belt, the rotating gear ring 3 is rotationally connected to the base 1, the fork block assembly 4 is arranged on the upper side of the rotating gear ring 3, the fork block assembly 4 is meshed and connected with the swing ring 5 rotatably arranged on the rotating gear ring 3, the fork block assembly 4 is connected to the rotating drive assembly 6, the rotating drive assembly 6 is arranged on the base 1, three groups of elastic clamping assemblies 7 are arranged, and the three groups of elastic clamping assemblies 7 are evenly arranged in a circumferential array on the rotating gear ring 3, the rotating gear ring 3 is used to clamp the camera, and the limit block 8 is fixedly mounted on the rotating gear ring 3, and the limit block 8 is used in conjunction with a limit groove provided on the swing ring 5.

[0034] With such arrangement, the base 1 plays a supporting role, the focusing drive assembly 2 is used to drive the rotating gear ring 3 to rotate, the rotating drive assembly 6 is used to drive the fork block assembly 4 to move, the fork block assembly 4 is used to limit the rotation of the swing ring 5, and the swing ring 5 can limit the rotation of the rotating gear ring 3 through the limit block 8. The arrangement of the elastic clamping assembly 7 allows the camera to be flexibly clamped, and can be adjusted according to cameras of different sizes and shapes to ensure that the camera remains fixed during rotation and does not move.

[0035] Embodiment 2, based on embodiment 1, combined with Figure 3 To explain:

[0036] The focus drive assembly 2 includes: a servo motor 21, a mounting plate 22 and a drive wheel 23. The servo motor 21 is fixedly mounted on the mounting plate 22. The servo motor 21 can provide high-precision motion control, making the focusing process more accurate and stable. The servo motor 21 has a fast response speed and can quickly reach a specified position to achieve fast and accurate focusing.

[0037] The mounting plate 22 is fixedly mounted on the base 1. By fixing the servo motor 21 on the mounting plate 22, which is in turn fixed on the base 1, the structure of the entire focus drive assembly is more compact, space-saving, and easy to integrate into various camera systems. The modular design of the servo motor 21, the mounting plate 22, and the drive wheel 23 makes it easier to maintain and replace parts, reducing maintenance costs and downtime.

[0038] The output end of the servo motor 21 is fixedly connected to the driving wheel 23, and the driving wheel 23 is connected to the rotating gear ring 3 through a belt. The driving wheel 23 is connected to the rotating gear ring 3 through a belt. This transmission method can effectively reduce friction and noise, while providing smooth rotation power, and improving the efficiency and reliability of the transmission.

[0039] Embodiment 3, based on embodiment 2, combined with Figure 4 and Figure 5 To explain:

[0040] The rotating gear ring 3 includes: a rotating gear ring body 31, a sliding outer ring 32, a sliding inner ring 33 and a slide rail 34. The rotating gear ring body 31 is connected to the driving wheel 23 through a belt, the lower side of the rotating gear ring body 31 is fixedly connected to the sliding inner ring 33, the sliding inner ring 33 is slidingly connected to the inner wall of the slide rail 34, the outer wall of the slide rail 34 is slidingly connected to the sliding outer ring 32, the sliding inner ring 33 is slidingly connected to the inner wall of the slide rail 34, and the sliding outer ring 32 is slidingly connected to the outer wall of the slide rail 34, providing a precise guiding effect, ensuring that the rotating movement of the rotating gear ring body 31 is smooth and without deviation. The design of the slide rail 34 reduces sliding friction, reduces wear, extends the service life of the rotating gear ring, and reduces maintenance requirements.

[0041] The sliding outer ring 32 is fixedly connected to the base 1 by screws, providing a stable supporting structure for the entire rotating gear ring, reducing vibration during rotation and improving focusing stability.

[0042] The swing ring 5 is rotatably disposed on the rotating gear ring body 31 , and the elastic clamping assembly 7 is disposed on the lower side of the rotating gear ring body 31 .

[0043] Embodiment 4, based on embodiment 3, combined with Figure 6 To explain:

[0044] The elastic clamping assembly 7 includes: a sliding block 71, a clamping head 72, a sliding fixed block 73 and a first elastic element 74. The sliding block 71 is slidably arranged on the lower side of the rotating gear ring body 31. The sliding block 71 is fixedly connected to the sliding fixed block 73 arranged on the upper side of the rotating gear ring body 31. The front end of the sliding block 71 is fixedly connected to the clamping head 72. The fixed connection between the clamping head 72 and the sliding block 71, and the fixed connection between the sliding block 71 and the sliding fixed block 73 together constitute a stable clamping structure, which reduces vibration during the focusing process.

[0045] The sliding block 71 is fixedly connected to one end of the first elastic element 74 , and the other end of the first elastic element 74 is fixedly connected to the rotating gear ring body 31 . A limit block 8 is provided on the upper side of the sliding fixed block 73 , and the limit block 8 is used in conjunction with a limit groove provided on the swing ring 5 .

[0046] The first elastic element 74 can automatically adjust the clamping force according to the size and shape of the camera, ensuring that the camera always remains in the correct position during the rotation and focusing process, while avoiding excessive pressure on the camera.

[0047] Embodiment 5, based on embodiment 4, combined with Figure 7 To explain:

[0048] The swing ring 5 is provided with an oblong limit groove 51, and the swing ring 5 is used in conjunction with the limit block 8 through the oblong limit groove 51. The inner wall of the swing ring 5 is provided with gear teeth, and the swing ring 5 is meshed and connected with the fork block assembly 4 through the gear teeth. The oblong limit groove 51 and the limit block 8 can accurately locate the position of the swing ring 5, prevent it from unnecessary movement during non-focusing, and ensure the accuracy of focusing. The meshing connection between the gear teeth and the fork block assembly 4 provides a stable mechanical connection method, which makes the swing ring 5 more stable during rotation focusing and reduces jitter and deviation. By using the gear teeth and the fork block assembly for meshing, the overall structure can be made more compact and the space occupied can be reduced. The meshing connection method of the gear teeth and the fork block assembly is convenient for disassembly and maintenance, and can be carried out quickly if replacement or repair is required.

[0049] Embodiment 6, based on embodiment 5, combined with Figure 8 To explain:

[0050] The fork block assembly 4 includes: a fork block body 41, a second elastic element 42, a fixed plate 43 and a pressure plate 44. The fixed plate 43 is fixedly mounted on the base 1. The fixed plate 43 is fixedly mounted on the base 1, providing a stable support point for the entire fork block assembly.

[0051] One end of the second elastic element 42 is connected to the fixed disk 43, and the other end of the second elastic element 42 is connected to the fork block body 41. The pressure plate 44 is fixedly installed on the fixed disk 43. The pressure plate 44 is fixedly installed on the fixed disk 43, which can ensure that the fork block body 41 maintains the correct position when driving the swing ring 5, thereby improving the focusing accuracy.

[0052] The fork block body 41 is used in conjunction with the pressure plate 44, the swing ring 5 and the rotation drive assembly 6. The fork block body 41 is limited by the pressure plate 44 during movement, and the fork block body 41 can be disengaged from the swing ring 5 under the action of the rotation drive assembly 6.

[0053] Embodiment 7, based on embodiment 6, combined with Fig. 9 To explain:

[0054] The rotating drive assembly 6 includes: a rotating ring 61, a driving arm 62, a driving head 63, a driving cylinder 64 and a cylinder mounting seat 65. The rotating ring 61 is rotatably set on the fixed plate 43, one end of the driving arm 62 is fixedly connected to the rotating ring 61, the other end of the driving arm 62 is hingedly connected to one end of the driving head 63, the other end of the driving head 63 is fixedly connected to the output end of the driving cylinder 64, the driving cylinder 64 is hingedly set on the cylinder mounting seat 65, the cylinder mounting seat 65 is fixedly connected to the base 1 by screws, and the rotating ring 61 is provided with a pushing groove 66 used in conjunction with the fork block body 41.

[0055] The use of the driving cylinder 64 realizes the automation of the focusing process. The camera can be accurately driven to focus through air pressure control, which improves the operating efficiency and accuracy. The articulated connection design of the driving arm 62 and the driving head 63 allows the driving assembly to flexibly adapt to the focusing requirements of different angles and positions, increasing the flexibility of adjustment. The rotating ring 61 is fixed on the fixed disk 43, and the cylinder mounting seat 65 is fixedly connected to the base 1, which improves the stability of the entire driving assembly. The modular design of the driving arm 62, the driving head 63 and the driving cylinder 64 makes maintenance and replacement easier and faster.

[0056] Embodiment 8, based on embodiment 7, combined with Fig.10 To explain:

[0057] The fork block body 41 includes: a limiting head 411, a clamping block 412 and a connecting portion 413. The limiting head 411, the clamping block 412 and the connecting portion 413 are an integrated structure. The limiting head 411 is used in conjunction with the pressure plate 44. The clamping block 412 extends into the pushing groove 66 and is meshed and connected with the swing ring 5. The connecting portion 413 is fixedly connected to one end of the second elastic element 42.

[0058] With such arrangement, the limit head 411 ensures the uniqueness of the motion trajectory under the action of the pressure plate 44, and the clamping block 412 extends into the pushing groove 66, so that the rotating ring 61 can drive the clamping block 412 to move when rotating, so that the bottom of the clamping block 412 is disengaged from the swing ring 5, so that the swing ring 5 can rotate.

[0059] Working principle of the present invention: When the present invention is in use, the rotating driving component 6 drives the fork block component 4, so that the fork block component 4 is disengaged from the meshing with the swing ring 5, and the swing ring 5 can rotate freely, and then the limit block 8 can slide in the oblong limit groove 51 of the swing ring 5, and then under the action of the spring in the elastic clamping component 7, the elastic clamping component 7 drives the limit block 8 to move, so that the front end of the elastic clamping component 7 clamps the camera, and at this time, starting the focusing driving component 2 can drive the rotating gear ring 3 to rotate, thereby achieving the purpose of focusing, after focusing is completed, the rotating driving component 6 is reset, the fork block component 4 clamps the swing ring 5, and then the position of the limit block 8 is fixed, because the limit block 8 is fixedly arranged with the rotating gear ring 3 through the elastic clamping component 7, so that the position of the rotating gear ring 3 is fixed and no longer rotates, the present invention can clamp the camera at three points at any angle and make 360° infinite rotation after clamping, and does not block the central area to ensure that the field of view of the camera is not blocked by the mechanism.

[0060] For those skilled in the art, the present invention is not limited to the details of the exemplary embodiments described above, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim involved.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any slight modification, equivalent substitution and improvement made to the above embodiment based on the technical essence of the present invention should be included in the protection scope of the technical solution of the present invention.

Claims

1. A camera automatic mechanical focusing mechanism, characterized in that: include: A base (1), a focus drive assembly (2), a rotating gear ring (3), a shift fork block assembly (4), a swing ring (5), a rotation drive assembly (6), an elastic clamping assembly (7) and a limit block (8); the focus drive assembly (2) is fixedly mounted on the base (1); an output end of the focus drive assembly (2) is connected to the rotating gear ring (3) via a belt; the rotating gear ring (3) is rotationally connected to the base (1); the shift fork block assembly (4) is arranged on the upper side of the rotating gear ring (3); the shift fork block assembly (4) and the rotating gear ring (3) are arranged on the upper side of the rotating gear ring (3); The swing ring (5) on the rotating gear ring (3) is meshed and connected, the fork block assembly (4) is connected to the rotation drive assembly (6), the rotation drive assembly (6) is arranged on the base (1), three groups of elastic clamping assemblies (7) are arranged, and the three groups of elastic clamping assemblies (7) are evenly arranged in a circular array on the rotating gear ring (3), the rotating gear ring (3) is used to clamp the camera, and a limit block (8) is fixedly installed on the rotating gear ring (3), and the limit block (8) is used in conjunction with a limit groove provided on the swing ring (5).

2. The automatic mechanical focusing mechanism of a camera according to claim 1, characterized in that: The focus drive assembly (2) comprises: a servo motor (21), a mounting plate (22) and a driving wheel (23); the servo motor (21) is fixedly mounted on the mounting plate (22); the mounting plate (22) is fixedly mounted on the base (1); an output end of the servo motor (21) is fixedly connected to the driving wheel (23); and the driving wheel (23) is connected to a rotating gear ring (3) via a belt.

3. The automatic mechanical focusing mechanism of a camera according to claim 2, characterized in that: The rotating gear ring (3) comprises: a rotating gear ring body (31), a sliding outer ring (32), a sliding inner ring (33) and a slide rail (34); the rotating gear ring body (31) is connected to a driving wheel (23) via a belt; the lower side of the rotating gear ring body (31) is fixedly connected to the sliding inner ring (33); the sliding inner ring (33) is slidingly connected to the inner wall of the slide rail (34); the outer wall of the slide rail (34) is slidingly connected to the sliding outer ring (32); the sliding outer ring (32) is fixedly connected to the base (1); the swing ring (5) is rotatably arranged on the rotating gear ring body (31); and the elastic clamping assembly (7) is arranged on the lower side of the rotating gear ring body (31).

4. The automatic mechanical focusing mechanism of a camera according to claim 3, characterized in that: The elastic clamping assembly (7) comprises: a sliding block (71), a clamping head (72), a sliding fixed block (73) and a first elastic element (74); the sliding block (71) is slidably arranged on the lower side of the rotating gear ring body (31); the sliding block (71) is fixedly connected to the sliding fixed block (73) arranged on the upper side of the rotating gear ring body (31); the front end of the sliding block (71) is fixedly connected to the clamping head (72); the sliding block (71) is fixedly connected to one end of the first elastic element (74); the other end of the first elastic element (74) is fixedly connected to the rotating gear ring body (31); a limiting block (8) is arranged on the upper side of the sliding fixed block (73); the limiting block (8) is used in conjunction with a limiting groove provided on the swing ring (5).

5. The automatic mechanical focusing mechanism of a camera according to claim 4, characterized in that: The swing ring (5) is provided with an oblong limiting groove (51), the swing ring (5) cooperates with the limiting block (8) through the oblong limiting groove (51), the inner wall of the swing ring (5) is provided with gear teeth, and the swing ring (5) is meshedly connected with the fork block assembly (4) through the gear teeth.

6. The automatic mechanical focusing mechanism of a camera according to claim 5, characterized in that: The fork block assembly (4) comprises: a fork block body (41), a second elastic element (42), a fixed disk (43) and a pressure plate (44); the fixed disk (43) is fixedly mounted on the base (1); one end of the second elastic element (42) is connected to the fixed disk (43); the other end of the second elastic element (42) is connected to the fork block body (41); the pressure plate (44) is fixedly mounted on the fixed disk (43); the fork block body (41) is used in conjunction with the pressure plate (44), the swing ring (5) and the rotation drive assembly (6) respectively.

7. The automatic mechanical focusing mechanism of a camera according to claim 6, characterized in that: The rotary drive assembly (6) comprises: a rotary ring (61), a drive arm (62), a drive head (63), a drive cylinder (64) and a cylinder mounting seat (65); the rotary ring (61) is rotatably arranged on a fixed plate (43); one end of the drive arm (62) is fixedly connected to the rotary ring (61); the other end of the drive arm (62) is hingedly connected to one end of the drive head (63); the other end of the drive head (63) is fixedly connected to an output end of the drive cylinder (64); the drive cylinder (64) is hingedly arranged on the cylinder mounting seat (65); the cylinder mounting seat (65) is fixedly connected to the base (1); and a push groove (66) for use with the shift fork block body (41) is provided on the rotary ring (61).

8. The automatic mechanical focusing mechanism of a camera according to claim 7, characterized in that: The fork block body (41) comprises: a limit head (411), a clamping block (412) and a connecting portion (413); the limit head (411), the clamping block (412) and the connecting portion (413) are an integrated structure; the limit head (411) is used in conjunction with the pressure plate (44); the clamping block (412) extends into the pushing groove (66) and is meshed and connected with the swing ring (5); and the connecting portion (413) is fixedly connected to one end of the second elastic element (42).

Images