Recognition module focusing device

Abstract

The utility model is suitable for biological characteristic identification technical field provides a kind of identification module focusing device, above-mentioned identification module focusing device includes base, cover plate subassembly, focusing piece and drive assembly. Identification module is compressed on base by cover plate subassembly, the stability of identification module installation is guaranteed. Drive assembly is divided into transmission part and operation part two parts, transmission part is connected with focusing piece transmission and operation part is set away from focusing piece, can when the focal length of lens on identification module is adjusted, only needs to operate the operation part at the open position away from focusing piece, lens focal length adjustment can be realized, focal length adjustment is not inconvenient due to the lens installation space narrow is avoided, make the adjustment of lens focal length more convenient.

Description

Technical Field

[0001] This utility model belongs to the field of biometric identification technology, and in particular relates to a focusing device for an identification module. Background Technology

[0002] Multi-finger vein recognition is a biometric technology that identifies an individual by recognizing the distribution characteristics of veins in multiple fingers. Multi-finger vein recognition devices typically use near-infrared light to illuminate the finger. Because the absorption rate of near-infrared light by hemoglobin in veins differs from that of surrounding tissues, when near-infrared light penetrates the finger, the veins appear as relatively dark lines in the image, forming a vein image. Finally, the recognition module identifies the image, and after processing and analyzing the acquired image, extracts the unique features of the veins as the basis for personal identification. Existing recognition modules require camera focusing during production to ensure image clarity. However, due to the limited space for lens installation on the module, adjusting the lens focus is inconvenient. Utility Model Content

[0003] The purpose of this invention is to provide a focusing device for an identification module, which aims to solve the technical problem of inconvenient lens focal length adjustment in the production process of existing identification modules.

[0004] This utility model is implemented as follows: a focusing device for an identification module, comprising:

[0005] The base is used to support the recognition module;

[0006] The cover plate assembly has a first state and a second state. When the cover plate assembly is in the first state, the cover plate assembly covers the base and is used to press the identification module onto the base. When the cover plate assembly is in the second state, the cover plate assembly avoids the identification module.

[0007] A focusing component, rotatably mounted on the cover plate, is used to adjust the focal length of the lens;

[0008] The drive assembly includes a transmission part and an operating part. The transmission part is connected to the focusing component, and the operating part is disposed away from the focusing component. The operating part is used to drive the transmission part to rotate.

[0009] When adjusting the focal length of the lens on the recognition module, first place the recognition module on the base, then adjust the cover plate assembly to the first state, so that the cover plate assembly presses and fixes the recognition module on the base, and the focusing component movably mounted on the cover plate assembly also contacts the focusing part of the lens. Finally, the operating part of the drive assembly can be operated to drive the rotating part to rotate. Since the transmission part of the drive assembly is connected to the focusing component, the rotation of the transmission part drives the focusing component to rotate, and the rotation of the focusing component drives the focusing part of the lens to rotate together, thereby achieving the purpose of adjusting the focal length of the lens. After focusing, the cover plate assembly can be moved to the second position, so that the cover plate assembly avoids the recognition module, making it easy to remove the recognition module from the base after focusing. The cover plate assembly pressing the recognition module firmly onto the base ensures the stability of the recognition module installation. Furthermore, by dividing the drive assembly into two parts, a transmission part and an operation part, with the transmission part being connected to the focusing component and the operation part being located away from the focusing component, when adjusting the focal length of the lens on the recognition module, it is only necessary to operate the operation part, which is located in an open position away from the focusing component, to achieve the adjustment of the lens focal length. This avoids the inconvenience of focal length adjustment caused by the small lens installation space, making the adjustment of the lens focal length more convenient.

[0010] In an optional embodiment, the drive assembly includes a rotatable first gear, and a first meshing tooth is provided on the outer periphery of the focusing member. The first gear meshes with the first meshing tooth, the part of the first gear meshing with the first meshing tooth is the transmission part, and the part of the first gear away from the focusing member is the operating part.

[0011] The transmission part on the first gear meshes with the focusing component, while the operating part on the first gear is located in an open area away from the focusing component. By rotating the operating part on the first gear, the focusing component can be driven to rotate, making it more convenient to drive the focusing component to rotate.

[0012] In an optional embodiment, the drive assembly includes a rotatable second gear and a third gear, a first meshing tooth is provided on the outer periphery of the focusing member, the second gear meshes with the first meshing tooth, the second gear meshes with the third gear, the second gear is the transmission part, and the third gear is the operating part.

[0013] The second gear meshes with the first meshing tooth on the outer periphery of the focusing component, and the second gear meshes with the third gear. The third gear can be set in an open area further away from the second gear and the focusing component, so that the distance between the third gear and the lens is greater, making the focusing operation of the lens more convenient.

[0014] In one alternative embodiment, the drive assembly includes a rotatable rotating rod portion, a first end of which is connected to the end face of the focusing member, and a second end of which extends away from the focusing member. The first end of the rotating rod portion is the transmission portion, and the second end of the rotating rod portion is the operation portion.

[0015] The system includes a rotatable lever, with its first end connected to the end face of the focusing element, and its second end extending away from the focusing element. When focal length adjustment is needed, the operator can rotate the second end of the lever to drive the focusing element 3, making lens focusing more convenient and simplifying the overall structure of the drive assembly.

[0016] In an optional embodiment, the first end of the rotating rod has a second meshing tooth arranged circumferentially around the rotating rod, and the end face of the focusing member is provided with a third meshing tooth. The first end of the rotating rod and the end face of the focusing member mesh with each other through the second meshing tooth and the third meshing tooth.

[0017] A second meshing tooth is arranged circumferentially around the rotating rod, and a third meshing tooth is arranged around the axis of the focusing component on the end face of the focusing component. The transmission connection between the rotating rod and the focusing component is realized through the meshing configuration of the second and third meshing teeth, making the transmission connection between the first end of the rotating rod and the end face of the focusing component more stable and more precise, and also making the transmission between the two more stable.

[0018] In one optional embodiment, the focusing component includes a ring body and a snap-fit ​​structure. The snap-fit ​​structure is disposed inside the ring body and is used to engage with the focusing portion of the lens when the ring body is fitted onto the outside of the lens.

[0019] The ring body has a snap-fit ​​structure inside, which can be used to snap the focusing component onto the outside of the lens and fix it to the lens. Compared with only friction contact, this makes the connection between the focusing component and the lens more secure and stable, and avoids relative sliding between the focusing component and the lens.

[0020] In an optional embodiment, the snap-fit ​​structure includes a plurality of snap-fit ​​protrusions, and the plurality of snap-fit ​​protrusions are spaced apart around the axis of the ring body.

[0021] Multiple locking protrusions are provided inside the ring body, and these protrusions are spaced apart around the axis of the ring body. When the focusing component is mounted on the outside of the lens, the top of the multiple locking protrusions abut against the outside of the lens to lock and fix the lens, making the mounting of the focusing component and the lens more convenient.

[0022] In an optional embodiment, the cover plate assembly includes a main body portion having a limiting groove for accommodating the focusing component, the focusing component being rotatably disposed inside the limiting groove, and an avoidance through hole being provided at the bottom surface of the limiting groove for the lens of the identification module to pass through.

[0023] A limiting groove is provided on the main board body. When the main board body is placed on the base, the bottom surface of the limiting groove provides vertical support for the focusing component. Simultaneously, the side wall of the limiting groove limits the horizontal position of the focusing component, making its rotation more stable. Furthermore, a clearance hole is provided on the bottom surface of the limiting groove. This allows the lens to extend into the limiting groove, facilitating the mounting and engagement of the focusing component and the lens. It also prevents the limiting groove and the main board body from interfering with normal image capture. While maintaining a simple cover plate assembly structure, this design makes the focusing process more convenient and improves usability.

[0024] In an optional embodiment, the cover plate assembly further includes a limiting cover plate movably connected to the main body portion, the limiting cover plate being used to limit the focusing element within the limiting groove.

[0025] A limiting cover plate is also movably connected to the main body. When the focusing component is located inside the limiting groove, the limiting cover plate can be placed on the opening of the limiting groove and abut against the end face of the focusing component to limit the focusing component in the vertical direction and prevent the focusing component from falling out of the limiting groove.

[0026] In an optional embodiment, the base is provided with a positioning groove for accommodating the identification module, the positioning groove being adapted to the shape of the identification module.

[0027] When focusing, the recognition module is placed in the positioning groove. The bottom surface of the positioning groove supports the recognition module vertically, and the side wall of the positioning groove limits the recognition module horizontally, which makes the installation and positioning of the recognition module more convenient.

[0028] The technical advantages of this invention compared to existing technologies are as follows: When adjusting the focal length of the lens on the recognition module, the recognition module is first placed on the base. Then, the cover plate assembly is adjusted to the first state, pressing and fixing the recognition module onto the base. The focusing component, movably mounted on the cover plate assembly, also contacts the focusing part of the lens. Finally, the operating part of the drive assembly can be operated to drive the rotating part to rotate. Since the transmission part of the drive assembly is connected to the focusing component, its rotation drives the focusing component to rotate, which in turn rotates the focusing part of the lens, thus adjusting the lens focal length. After focusing, the cover plate assembly can be moved to the second position, avoiding contact with the recognition module, making it easy to remove the refocused recognition module from the base. Compared to existing focusing methods, pressing the recognition module onto the base with the cover plate assembly ensures the stability of the recognition module installation. Furthermore, by dividing the drive assembly into two parts, a transmission part and an operation part, with the transmission part being connected to the focusing component and the operation part being located away from the focusing component, when adjusting the focal length of the lens on the recognition module, it is only necessary to operate the operation part, which is located in an open position away from the focusing component, to achieve the adjustment of the lens focal length. This avoids the inconvenience of focal length adjustment caused by the small lens installation space, making the adjustment of the lens focal length more convenient. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of the identification module focusing device provided in one embodiment of the present invention. Figure 1 ;

[0031] Figure 2 This is a schematic diagram of the structure of the identification module focusing device provided in one embodiment of the present invention. Figure 2 ;

[0032] Figure 3 This is a schematic diagram of the structure of the driving component used in one embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the structure of the cover plate assembly used in one embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the focusing component used in one embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of the drive component used in another embodiment of the present invention;

[0036] Figure 7 This is a cross-sectional view of the drive component used in another embodiment of the present invention;

[0037] Figure 8 This is a partial cross-sectional view of the base used in one embodiment of the present invention;

[0038] Figure 9 This is a schematic diagram of the base structure used in another embodiment of the present invention;

[0039] Figure 10 This is a schematic diagram of the lifting assembly used in this embodiment of the utility model;

[0040] Figure 11 This is a schematic diagram of the drive component used in another embodiment of the present invention.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Base; 11. Positioning structure; 111. Positioning groove; 112. Limiting post; 113. Supporting post; 2. Cover plate assembly; 21. Main body; 22. Limiting cover plate; 23. Limiting groove; 24. Clearance through hole; 3. Focusing component; 31. Ring body; 32. Snap-fit ​​structure; 321. Snap-fit ​​protrusion; 33. First meshing tooth; 34. Third meshing tooth; 4. Drive assembly; 41. First gear; 42. Second gear; 43. Rotating rod; 44. Second meshing tooth; 45. Third gear; 5. Conductive connector; 6. Tray assembly; 7. Lifting assembly; 71. Lifting bracket; 72. Drive screw; 73. Sliding block; 8. Identification module. Detailed Implementation

[0043] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0044] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] In this embodiment, according to Figure 1 The XYZ rectangular coordinate system established in the text is defined as follows: the side located in the positive direction of the X-axis is defined as front, and the side located in the negative direction of the X-axis is defined as back; the side located in the positive direction of the Y-axis is defined as left, and the side located in the negative direction of the Y-axis is defined as right; the side located in the positive direction of the Z-axis is defined as up, and the side located in the negative direction of the Z-axis is defined as down.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] In existing technologies, lenses are typically mounted on a PCB (Printed Circuit Board) to form a recognition module, and the entire recognition module is then installed in a recognition device. During the manufacturing process of the recognition device, the focal length of the lens on the recognition module needs to be adjusted to ensure the clarity of the image captured by the lens. A lens typically consists of a lens body and a focusing mechanism. When the focal length needs to be adjusted, it can be adjusted by rotating the focusing mechanism. However, because lenses are generally small or installed in confined spaces, operators cannot easily reach into the space to directly rotate the focusing mechanism, making focal length adjustment very inconvenient. To solve the above problems, this utility model proposes a focusing device for a recognition module, the specific solution of which is as follows:

[0049] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0050] Please refer to Figures 1 to 4 As shown in this embodiment of the invention, a focusing device for an identification module is provided. This device includes a base 1, a cover plate assembly 2, a focusing component 3, and a driving assembly 4. The base 1 supports the identification module 8. The cover plate assembly 2 has a first state and a second state. In the first state, the cover plate assembly 2 covers the base 1, pressing the identification module 8 against the base 1. In the second state, the cover plate assembly 2 avoids the identification module 8. The focusing component 3 is rotatably mounted on the cover plate assembly 2. In the first state, the focusing component 3 is fitted onto the outside of the lens, and its rotation causes the focusing part of the lens to rotate, thereby adjusting the lens's focal length. The driving assembly 4 includes a transmission part and an operating part. The transmission part is connected to the focusing component 3, and the operating part is located away from the focusing component 3, driving the transmission part to rotate.

[0051] Specifically, base 1 refers to a supporting component with a certain height, which can be block-shaped, plate-shaped, or a combination of various shapes. Cover plate assembly 2 refers to a component with a certain volume, which can be a single component or a combination of multiple components. Focusing component 3 refers to a component with a certain volume, which can be connected to the focusing part of the lens through clamping, friction contact, or fasteners to keep it relatively fixed to the focusing part of the lens. Drive assembly 4 refers to a component or assembly that can drive other objects to rotate through its own movement. Drive assembly 4 can be a single component or an assembly composed of multiple components. The drive structure itself can drive the focusing component 3 to rotate around its own axis through rotation, linear sliding, or swinging. When drive assembly 4 is a single component, the transmission part and the operating part can refer to two different parts on the drive assembly. When drive assembly 4 is composed of multiple components, the transmission part and the operating part can refer to different components that make up drive assembly 4. The transmission unit and the focusing component 3 can be connected by means of belt drive, chain drive, gear drive or friction drive, etc., without specific limitations.

[0052] The focusing device for the identification module provided in this embodiment of the utility model, when it is necessary to adjust the focal length of the lens on the identification module 8, firstly places the identification module 8 on the base 1, then adjusts the cover plate assembly 2 to the first state, so that the cover plate assembly 2 presses and fixes the identification module 8 on the base 1, and the focusing component 3 movably disposed on the cover plate assembly 2 also contacts the focusing part of the lens. Finally, the operating part of the drive assembly 4 can be operated to drive the rotating part to rotate. And since the transmission part of the drive assembly 4 is connected to the focusing component, when the transmission part rotates, it can drive the focusing component 3 to rotate. When the focusing component 3 rotates, it will drive the focusing part of the lens to rotate together, so as to achieve the purpose of adjusting the focal length of the lens. After focusing is completed, the cover plate assembly 2 can be placed in the second position, so that the cover plate assembly 2 avoids the identification module 8, making it convenient to remove the identification module 8 from the base after focusing. Compared with existing focusing methods, the cover plate assembly 2 presses the recognition module 8 firmly onto the base 1, ensuring the stability of the recognition module 8 installation. Furthermore, by dividing the drive assembly 4 into a transmission section and an operation section, with the transmission section connected to the focusing component 3 and the operation section positioned away from the focusing component 3, the focal length of the lens on the recognition module 8 can be adjusted simply by operating the operation section located in an open area away from the focusing component 3. This avoids the inconvenience of focal length adjustment caused by limited lens installation space, making focal length adjustment simpler and more convenient.

[0053] In one embodiment, see Figure 11The drive assembly 4 includes a rotatable first gear 41. The focusing element 3 has first meshing teeth 33 on its outer periphery. The first gear 41 meshes with the first meshing teeth 33. The part of the first gear 41 that meshes with the first meshing teeth 33 is the transmission part, and the part of the first gear 41 away from the focusing element 3 is the operating part. Specifically, the first gear 41 refers to a wheel-shaped component with a certain diameter, and meshing teeth are evenly arranged on its outer periphery. The first gear 41 can be rotatably mounted on the base 1 or the cover plate assembly 2, or it can be rotatably mounted on other components. The first gear 41 is rotatable because it has the freedom to rotate around its own axis. The first meshing teeth 33 are structures composed of multiple protruding structures arranged at intervals in a certain direction, generally arranged in a ring. In this embodiment, the transmission part on the first gear 41 meshes with the focusing element 3, while the operating part on the first gear 41 is located in an open area away from the focusing element 3. By rotating the operating part on the first gear 41, the focusing component 3 can be driven to rotate together, making it more convenient to drive the focusing component 3 to rotate while ensuring the simple structure of the driving assembly 4.

[0054] In an optional embodiment, please refer to Figure 11 The first gear 41 is rotatably mounted on the cover plate assembly 2. In this embodiment, by rotatably mounting both the first gear 41 and the focusing component 3 on the cover plate assembly 2, it avoids installing the first gear 41 and the focusing component 3 separately. When the position of the cover plate assembly 2 is adjusted, the meshing of the first gear 41 and the focusing component 3 will switch between disconnection and reconnection, so that the first gear 41 and the focusing component 3 can always maintain a transmission connection, thereby improving the stability of the connection between the two.

[0055] In one embodiment, see Figure 3The drive assembly 4 includes a rotatable second gear 42 and a third gear 45. A first meshing tooth 33 is provided on the outer periphery of the focusing component 3. The second gear 42 meshes with the first meshing tooth 33, and the second gear 42 meshes with the third gear 45. The second gear 42 is the transmission part, and the third gear 45 is the operating part. Specifically, the second gear 42 refers to a wheel-shaped component with a certain diameter. Meshing teeth are evenly arranged on the outer periphery of the second gear 42. The second gear 42 can be rotatably mounted on the base 1 or the cover plate assembly 2, or it can be rotatably mounted on other components. The rotatability of the second gear 42 means that the second gear 42 has a degree of freedom to rotate around its own axis. The third gear 45 refers to a wheel-shaped component with a certain diameter. Meshing teeth are evenly arranged on the outer periphery of the third gear 45. The third gear 45 can be rotatably mounted on the base 1 or the cover plate assembly 2, or it can be rotatably mounted on other components. The rotatability of the third gear 45 means that the second gear 42 has a degree of freedom to rotate around its own axis. In this embodiment, by meshing the second gear 42 with the first meshing tooth 33 on the outer periphery of the focusing member 3, and by meshing the second gear 42 with the third gear 45, and by setting the third gear 45 in an open area further away from the second gear 42 and the focusing member 3, the distance between the third gear 45 and the lens is increased, thereby making the focusing operation of the lens more convenient.

[0056] It should be noted that there can be multiple third gears 45. The number of third gears 45 can be set according to actual needs. When there are multiple third gears 45, they mesh with each other in sequence, which can make the structure of the drive assembly 4 simpler and easier to operate.

[0057] In an optional embodiment, please refer to Figure 3 The second gear 42 and the third gear 45 are rotatably mounted on the cover plate assembly 2. In this embodiment, by rotatably mounting both the second gear 42 and the focusing component 3 on the cover plate assembly 2, the separate installation of the second gear 42 and the focusing component 3 is avoided. When the position of the cover plate assembly 2 is adjusted, the engagement between the second gear 42 and the focusing component 3 switches between disengagement and reconnection, ensuring that the second gear 42 and the focusing component 3 maintain a constant transmission connection, making the connection more stable. Similarly, by rotatably mounting both the third gear 45 and the second gear 42 on the cover plate assembly 2, the switching between disengagement and reconnection of the second gear 42 and the third gear 45 during adjustments to the position of the cover plate assembly 2 is avoided, ensuring that the second gear 42 and the third gear 45 maintain a constant transmission connection.

[0058] In one embodiment, see Figure 6The drive assembly 4 includes a rotatable rotating rod portion 43. The first end of the rotating rod portion 43 is connected to the end face of the focusing component 3, and the second end of the rotating rod portion 43 extends away from the focusing component 3. The first end of the rotating rod portion 43 is a transmission part, and the second end is an operating part. Specifically, the rotating rod portion 43 refers to a rod-shaped component of a certain length, and its cross-section is usually circular to facilitate rotation. The rotation axis of the rotating rod portion 43 can be set at an angle to the rotation axis of the focusing component 3. This angle can be a right angle; for example, when the rotation axis of the focusing component 3 is vertical, the rotation axis of the rotating rod portion 43 can be horizontal. The first end of the rotating rod portion 43 can be connected to the end face of the focusing component 3 through friction, gear meshing, or belt drive. In this embodiment, a rotatable rotating rod 43 is provided, and the first end of the rotating rod 43 is connected to the end face of the focusing member 3. The second end of the rotating rod 43 extends away from the focusing member 3. When it is necessary to adjust the focus, the operator can drive the focusing member 3 to rotate by rotating the second end of the rod 43, making lens focusing more convenient.

[0059] In one embodiment, see Figure 7 The first end of the rotating rod 43 has a second meshing tooth 44 arranged circumferentially around the rotating rod 43, and the end face of the focusing member 3 has a third meshing tooth 34. The first end of the rotating rod 43 and the end face of the focusing member 3 are connected by the meshing of the second meshing tooth 44 and the third meshing tooth 34. Specifically, the second meshing tooth 44 and the third meshing tooth 34 are both structures composed of multiple protruding structures arranged at intervals in a certain direction. The protruding structures can be arranged in a ring or in a straight line. In this embodiment, by using the second meshing tooth 44 arranged circumferentially around the rotating rod 43 and the third meshing tooth 34 arranged around the axis of the focusing member 3 on the end face of the focusing member 3, the transmission connection between the rotating rod 43 and the focusing member 3 is achieved through the meshing configuration of the second meshing tooth 44 and the third meshing tooth 34. This makes the transmission connection between the first end of the rotating rod 43 and the end face of the focusing member 3 more stable and precise, and also makes the transmission between the two more stable.

[0060] It should be noted that the second meshing tooth 44 may be provided only at the first end of the rotating rod portion 43, or the second meshing tooth 44 may be provided along the length of the rotating rod portion 43 on the entire rotating rod portion 43.

[0061] In one embodiment, see Figure 5The focusing component 3 includes a ring body 31 and a locking structure 32. The locking structure 32 is disposed inside the ring body 31 and is used to engage with the focusing part of the lens when the ring body 31 is fitted onto the outside of the lens. Specifically, the ring body 31 refers to a ring-shaped component with a certain diameter, and there is usually a certain accommodating space inside the ring body 31. The locking structure 32 is a structure that can be locked onto other objects, mainly relying on the elastic deformation, friction, and geometric cooperation between the components to achieve the connection. The locking structure 32 can be multiple protrusions that hold other objects in the middle of the protrusions. The locking structure 32 can also be a snap-fit ​​type, a block type, or a spring type, etc. In this embodiment, by providing a locking structure 32 inside the ring body 31, after the focusing component 3 is fitted onto the outside of the lens, it can be locked onto the lens by the locking structure. Compared with only frictional contact, the connection between the focusing component 3 and the lens is more firm and stable, avoiding relative sliding between the focusing component 3 and the lens, and improving the accuracy of focusing.

[0062] In one embodiment, see Figure 5 The locking structure 32 includes multiple locking protrusions 321, which are spaced apart around the axis of the ring body 31. Specifically, each locking protrusion 321 is a component with a certain height. The locking protrusion 321 can be integrally formed with the ring body 31, or it can be a separate component installed inside the focusing element 3 by welding, locking, or fastener connection. In this embodiment, by providing multiple locking protrusions 321 inside the ring body 31 and spaced apart around the axis of the ring body 31, the lens can be secured by the tops of the multiple locking protrusions 321 abutting against the outside of the lens when the focusing element 3 is fitted onto the outside of the lens, making the mounting of the focusing element 3 and the lens more convenient.

[0063] In one embodiment, see Figure 4The cover plate assembly 2 includes a main body 21, which has a limiting groove 23 for accommodating a focusing component 3. The focusing component 3 is rotatably disposed inside the limiting groove 23. The main body 21 also has a clearance through hole 24 for the lens of the identification module 8 to pass through. Specifically, the main body 21 refers to a plate-like structure with a certain area, and its shape can be circular, rectangular, or any other arbitrary shape. The limiting groove 23 refers to a groove structure with a certain depth, and its shape can be adapted to the outer periphery of the focusing component 3. For example, when the outer periphery of the focusing component 3 is circular, the overall shape of the limiting groove 23 can also be circular. Here, the shape of the limiting groove 23 refers to the cross-sectional shape of a plane perpendicular to the depth direction of the limiting groove 23. The clearance through hole 24 refers to a hole structure with open ends. In this embodiment, a limiting groove 23 is provided on the main board body 21. When the main board body 21 is placed on the base 1, the bottom surface of the limiting groove 23 can support the focusing component 3 vertically. At the same time, the side wall of the limiting groove 23 can limit the horizontal position of the focusing component 3, making the rotation of the focusing component 3 more stable. Meanwhile, an avoidance through hole 24 is provided on the bottom surface of the limiting groove 23. On the one hand, the lens can be inserted into the limiting groove 23 through the avoidance through hole 24, making the mounting and engagement of the focusing component 3 and the lens more convenient. On the other hand, it can also prevent the limiting groove 23 and the main board body 21 from affecting the normal image shooting of the lens. While ensuring the simplicity of the cover plate assembly 2 structure, the focusing process is more convenient and easy to use, improving the ease of use.

[0064] In an optional embodiment, please refer to Figure 4 Furthermore, an avoidance notch can be provided on the side wall of the limiting groove 23. Specifically, the avoidance notch refers to an opening structure with a certain width. In this embodiment, by providing an avoidance notch on the side wall of the limiting groove 23, it is convenient for the first gear 41 to be connected to the focusing component 3 located in the limiting groove 23, making the rotation of the focusing component 3 more convenient.

[0065] In one embodiment, see Figure 4The cover plate assembly 2 also includes a limiting cover plate 22, which is movably connected to the main body 21 and at least partially abuts against the focusing member 3 to prevent the focusing member 3 from falling out of the limiting groove 23. Specifically, the limiting cover plate 22 refers to a plate-shaped component with a certain area, which can be circular, rectangular, or any other shape. The limiting cover plate 22 can be movably connected to the main body 21 by means of snap-fit, hinge, or sliding connection. In this embodiment, by also movably connecting the limiting cover plate 22 to the main body 21, the limiting cover plate 22 can be placed over the opening of the limiting groove 23 when the focusing member 3 is located inside the limiting groove 23, and the limiting cover plate 22 abuts against the end face of the focusing member 3, thereby limiting the focusing member 3 vertically to prevent it from falling out of the limiting groove 23, thus making the installation of the focusing member 3 more stable.

[0066] In one embodiment, see Figure 2 The main board body 21 and the base 1 are hinged together, and the limiting cover 22 is also hinged to the main board body 21. In this embodiment, by hinged to the main board body 21 and the base 1, a hinge can be provided between them. By flipping, the position of the main board body can be adjusted, thereby adjusting the cover assembly 2 between the first and second states. This makes the adjustment of the cover assembly 2 more convenient while ensuring its stable installation, and also makes the installation and removal of the identification module more convenient. Similarly, the limiting cover 22 and the main board body 21 are hinged together by a hinge. This hinged connection makes the position adjustment of the limiting cover 22 more convenient while ensuring its stable installation, and also makes the disassembly and replacement of the focusing component 3 more convenient and quick.

[0067] In one embodiment, see Figure 8 The base 1 is provided with a positioning structure 11 for accommodating the recognition module 8. The positioning structure 11 includes a positioning groove 111, the shape of which is adapted to the shape of the recognition module. Specifically, the positioning groove 111 refers to a groove structure with a certain depth. The shape of the positioning groove 111 is adapted to the shape of the recognition module, which can be understood as the shape of the positioning groove 111 being adapted to the shape of the PCB on the recognition module. In this embodiment, by setting the positioning structure 11 as a positioning groove 111, the recognition module can be placed in the positioning groove 111 during focusing. The bottom surface of the positioning groove 111 provides vertical support for the recognition module, and the sidewalls of the positioning groove 111 limit the recognition module in the horizontal direction, thereby making the installation and positioning of the recognition module more convenient.

[0068] In another embodiment, please refer to Figure 9 The positioning structure 11 may include multiple limiting posts 112 and multiple support posts 113. Both the limiting posts 112 and the support posts 113 are disposed on the base 1. The limiting posts 112 are arranged at intervals along the contour matching direction of the recognition module to form an annular area for accommodating the recognition module. The support posts 113 are located within the annular area formed by the limiting posts 112, and the top surface height of the support posts 113 is lower than the top surface height of the limiting posts 112. In this embodiment, the multiple limiting posts 112, arranged at intervals along the contour matching direction of the recognition module, limit the recognition module horizontally. Simultaneously, the multiple support posts 113, supporting the recognition module below its PCB, provide vertical support, making the support and positioning of the recognition module 8 more convenient.

[0069] In one embodiment, see Figure 8 The base 1 is also provided with multiple conductive connectors 5. The first end of each conductive connector 5 extends into the positioning groove 111, and the second end of each conductive connector 5 is electrically connected to an external circuit. The conductive connectors 5 are used to electrically connect the recognition module to the external circuit when the recognition module is placed in the positioning groove 111. Specifically, the conductive connector 5 refers to a component that can conduct current. The material of the conductive connector 5 can be metal, etc., and the shape of the conductive connector 5 can be a conductive pin, a conductive sheet, or a flexible post, etc. The arrangement of the conductive connectors 5 matches the arrangement order of the connection points on the recognition module. In this embodiment, by providing multiple conductive connectors 5 on the base 1, when the recognition module is placed in the positioning structure 11, the first end located in the positioning structure 11 abuts against the connection point on the recognition module, and at the same time, the second end of each conductive connector 5 is electrically connected to the external circuit, so as to realize the connection between the recognition module and the external circuit. The image recognized by the lens can be transmitted to the system, and the system uses an algorithm to identify whether the image is clear to determine whether the focus is complete, making the lens focusing operation more convenient.

[0070] It should be noted that the base 1 can be supported by insulating material, or insulating material can be provided between the conductive connector 5 and the base 1 to prevent electrical conduction between the conductive connector 5 and the base 1.

[0071] In one embodiment, see Figure 10The focusing device of the recognition module also includes a tray assembly 6 and a lifting assembly 7. The tray assembly 6 is located above the base 1 and has a degree of freedom of movement in the vertical direction relative to the base 1. The tray assembly 6 is used to support the subject being photographed, and the lifting assembly 7 is used to drive the tray assembly 6 to move in the vertical direction. Specifically, the tray assembly 6 refers to a component that can support an object. The subject being photographed can be a physical object or an image, etc. The subject being photographed can be fixed below the tray assembly 6 or placed below the tray assembly 6. When the subject being photographed is placed above the tray assembly 6, a clearance structure 24 needs to be provided on the tray assembly 6 to prevent objects from blocking the subject being photographed and affecting the lens's shooting. The lifting assembly 7 refers to a component or assembly that can drive an object to move in a straight line. The lifting assembly 7 can be a hydraulic cylinder, a pneumatic cylinder, or an electric push rod, etc., or it can be a lead screw structure, etc. In this embodiment, by providing a tray assembly 6 above the base 1, and by adjusting the height of the tray assembly 6 via the lifting assembly 7, the subject on the tray assembly 6 can be adjusted to a preset height via the lifting assembly 7 during focusing operations, such as the shooting distance required when the identification module is installed on the product, making focusing operations more convenient.

[0072] It should be noted that when the recognition module is installed on the base 1, the lifting component 7 can drive the tray component 6 away from the base 1 to avoid the base 1 interfering with the installation of the recognition module.

[0073] In one embodiment, see Figure 10 The lifting assembly 7 includes a lifting bracket 71, a drive screw 72, and a sliding block 73. The drive screw 72 is rotatably mounted on the lifting bracket 71 and is arranged vertically. The sliding block 73 is slidably mounted on the lifting bracket 71 and is threadedly connected to the drive screw 72. The tray assembly 6 is connected to the sliding block 73. Specifically, the lifting bracket 71 refers to a support component with a certain height, which can be block-shaped, plate-shaped, or a combination of various shapes. The drive screw 72 refers to a rod-shaped component with a certain length, and threads are provided on the outer periphery of the drive screw 72. The sliding block 73 refers to a component with a certain volume, and the sliding block 73 is slidably connected to the lifting assembly 7 through a slide rail or guide post. In this embodiment, when the height of the tray assembly 6 needs to be adjusted, the drive screw 72 can be rotated to drive the sliding block 73 to slide along the axial direction of the drive screw 72, thereby driving the tray assembly 6 to move. The rotation of the drive screw 72 can be driven by a motor, hydraulic motor, or hand crank, making the adjustment of the tray assembly 6 more convenient.

[0074] The above description is merely a preferred embodiment of the present utility model, and only specifically describes the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.

Claims

1. A focusing device for an identification module, characterized in that, include: The base (1) is used to support the identification module (8); The cover plate assembly (2) has a first state and a second state. When the cover plate assembly (2) is in the first state, the cover plate assembly (2) covers the base (1) and is used to press the identification module (8) onto the base (1). When the cover plate assembly (2) is in the second state, the cover plate assembly (2) avoids the identification module (8). The focusing component (3) is rotatably mounted on the cover plate assembly (2) and is used to adjust the focal length of the lens; The drive assembly (4) includes a transmission part and an operating part. The transmission part is connected to the focusing member (3) in a transmission manner. The operating part is located away from the focusing member (3) and is used to drive the transmission part to rotate.

2. The focusing device for the identification module as described in claim 1, characterized in that, The drive assembly (4) includes a rotatable first gear (41), and a first meshing tooth (33) is provided on the outer periphery of the focusing member (3). The first gear (41) meshes with the first meshing tooth (33). The part where the first gear (41) meshes with the first meshing tooth (33) is the transmission part, and the part of the first gear (41) away from the focusing member (3) is the operation part.

3. The focusing device for the identification module as described in claim 1, characterized in that, The drive assembly (4) includes a rotatable second gear (42) and a third gear (45). The focusing component (3) has a first meshing tooth (33) on its outer periphery. The second gear (42) meshes with the first meshing tooth (33) and the second gear (42) meshes with the third gear (45). The second gear (42) is the transmission part and the third gear (45) is the operation part.

4. The focusing device for the identification module as described in claim 1, characterized in that, The drive assembly (4) includes a rotatable rotating rod (43), the first end of which is connected to the end face of the focusing member (3) in a transmission connection, and the second end of which extends away from the focusing member (3). The first end of the rotating rod (43) is the transmission part, and the second end of the rotating rod (43) is the operation part.

5. The focusing device for the identification module as described in claim 4, characterized in that, The first end of the rotating rod (43) has a second meshing tooth (44) arranged circumferentially around the rotating rod (43), and the end face of the focusing member (3) is provided with a third meshing tooth (34). The first end of the rotating rod (43) and the end face of the focusing member (3) mesh with each other through the second meshing tooth (44) and the third meshing tooth (34).

6. The focusing device for the identification module as described in any one of claims 1 to 5, characterized in that, The focusing component (3) includes a ring body (31) and a snap-fit ​​structure (32). The snap-fit ​​structure (32) is disposed inside the ring body (31) and is used to snap-fit ​​with the focusing part of the lens when the ring body (31) is fitted onto the outside of the lens.

7. The focusing device for the identification module as described in claim 6, characterized in that, The snap-fit ​​structure (32) includes a plurality of snap-fit ​​protrusions (321), and the plurality of snap-fit ​​protrusions (321) are spaced apart around the axis of the ring body (31).

8. The focusing device for the identification module as described in any one of claims 1 to 5, characterized in that, The cover plate assembly (2) includes a main body (21) having a limiting groove (23) for accommodating the focusing component (3). The focusing component (3) is rotatably disposed inside the limiting groove (23). An avoidance through hole (24) is also provided at the bottom surface of the limiting groove (23) for the lens of the identification module (8) to pass through.

9. The focusing device for the identification module as described in claim 8, characterized in that, The cover plate assembly (2) further includes a limiting cover plate (22), which is movably connected to the main body (21) and is used to limit the focusing component (3) in the limiting groove (23).

10. The focusing device for the identification module as described in any one of claims 1 to 5, characterized in that, The base (1) is provided with a positioning groove (111) for accommodating the identification module (8), and the positioning groove (111) is adapted to the shape of the identification module.

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