Connecting device with digital verification card mechanism

Abstract

The utility model belongs to the technical field of pipeline connection, and particularly relates to a connecting device with a digital verification card mechanism, which comprises a QC shell and a male plug, the QC shell comprises an upper shell and a lower shell, the upper shell is provided with an annular connecting bulge, the annular connecting bulge is provided with a locking claw which is arranged in a mirror image manner, and the male plug is connected with the upper shell and the lower shell. The upper shell is provided with a verification piece installation box, the verification piece installation box comprises an installation box shell, the installation box shell is of a hollow structure, the upper end and the lower end of the installation box shell are provided with access ports, and the inner side of the installation box shell is provided with a digital verification piece; the verification piece installation box is obliquely installed on the outer side of the upper shell, and the upper end of the verification piece installation box is flush with the upper surface of the annular connection protrusion. According to the utility model, the problems that the permanent and rapid tracing of the information of the part is not easy to realize and the unique information identification of each product cannot be realized after the connection of the existing rapid plugging joint are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline connection, and particularly relates to a connecting device with a digital verification card mechanism. Background Art

[0002] At present, during the application of quick-connect joints, in order to meet the requirements of traceability of production and other information and confirmation of assembly status, it is necessary to add a verification mechanism to it and engrave information such as production date and batch number. This method is not easy to achieve the permanent and quick traceability of the information of this part, and even less able to achieve the unique information identification of each product.

[0003] Chinese Patent with application number CN202322743957.2 discloses a quick plug-in joint, which includes a joint body having an assembly cavity. The joint body forms a first stepped edge at the assembly cavity; a first sealing ring is installed in the assembly cavity of the joint body and abuts against the first stepped edge; a clamping member is installed in the assembly cavity of the joint body for clamping a pipeline, and the clamping member and the first stepped edge jointly clamp the first sealing ring; and a locking seat is threadedly connected to the assembly cavity of the joint body and is located on the side of the clamping member away from the first sealing ring; wherein, the locking seat, the clamping member and the first sealing ring jointly form a socket for the pipeline to be inserted, and are arranged in sequence along the pipeline insertion direction, and the clamping member is provided with at least one group along the pipeline insertion direction; one end of the locking seat abuts against the clamping member, so that the clamping member squeezes the first sealing ring to cause elastic deformation, so that the first sealing ring tightly adheres to the outer wall of the pipeline for sealing.

[0004] However, although the above-mentioned quick plug-in joint in the prior art can be quickly connected, during mass production, it is necessary to additionally add a verification mechanism to it and engrave information such as production date and batch number. It is not easy to achieve the permanent and quick traceability of the information of this part, and even less able to achieve the unique information identification of each product. Summary of the Utility Model

[0005] In view of the above-mentioned deficiencies in the prior art, the present utility model provides a connecting device with a digital verification card mechanism to solve the problem that it is not easy to achieve the permanent and quick traceability of the information of this part after connection of the existing quick plug-in joint, and even less able to achieve the unique information identification of each product.

[0006] In order to solve the above technical problems, the present utility model adopts the following technical solutions:

[0007] A connecting device with a digital verification card mechanism, comprising a QC housing and a male plug. The QC housing includes an upper housing and a lower housing. The upper housing is provided with an annular connecting protrusion, and the annular connecting protrusion is provided with locking claws placed in mirror image. The upper housing is provided with a verification piece mounting box, which includes a mounting box housing. The mounting box housing is of a hollow structure and has access ports at its upper and lower ends. A digital verification piece is provided inside the mounting box housing. The verification piece mounting box is inclined and installed on the outer side of the upper housing, and the upper end of the verification piece mounting box is flush with the upper surface of the annular connecting protrusion. A connecting reinforcing rib is provided between the mounting box housing and the upper housing. The male plug includes a tube body and a conical inclined surface.

[0008] By adopting the above technical solution, the QC housing and the male plug are axially docked, and the locking claws fix the male plug. The bottom of the male plug pushes out the digital verification piece inside the verification piece mounting box, and the bottom of the digital verification piece is pushed out of the verification piece mounting box, so that the digital verification piece can be removed and a two-dimensional code can be engraved on it, achieving the purpose of permanent storage and rapid traceability of product information.

[0009] Furthermore, the digital verification piece includes a verification piece main body. Two reset elastic pieces placed in mirror image are provided at the upper end of the verification piece main body. A U-shaped notch is provided between the two reset elastic pieces. The reset elastic pieces will return to their original state after releasing the pressure when subjected to a certain pressure. Symmetric arc-shaped protrusions are provided on both side surfaces of the verification piece main body. An information two-dimensional code is provided on the surface of the verification piece main body. A gripping handle is provided below the verification piece main body. Parallel inner walls and inclined inner walls are provided inside the mounting box housing, and the inclined inner walls are respectively connected to the access ports and the parallel inner walls.

[0010] By adopting the above technical solution, the verification piece main body provides an installation position for the reset elastic pieces. The reset elastic pieces have the ability of elastic deformation, deform under external force and return to their original state after the external force is withdrawn. The U-shaped notch provides a space for the elastic deformation of the reset elastic pieces. The arc-shaped protrusions can ensure that the verification piece main body will not fall out of the mounting box housing under the action of gravity. The information two-dimensional code can record a large amount of digital information such as the production date, the batch and the piece number of the day of the product. The information can be read only by scanning the code, achieving the purpose of permanent storage and rapid traceability of product information. The gripping handle provides a gripping position for the user, enabling the user to hold the gripping handle and pull out the digital verification piece from the inside of the mounting box housing. The access ports provide an access space for the digital verification piece. The parallel inner walls and the inclined inner walls cooperate with each other to limit the position of the digital verification piece.

[0011] Furthermore, the distance between the parallel inner walls is greater than the width of the access opening. The width of the verification piece body is less than the width of the access opening. The distance between the symmetric arc-shaped protrusions provided on both sides of the verification piece body is greater than the width of the access opening and less than the distance between the parallel inner walls. The distance between the two ends of the two reset elastic pieces when not compressed is greater than the distance between the parallel inner walls. The distance between the two ends of the two reset elastic pieces when compressed towards the middle is less than the width of the access opening. The overall length of the digital verification piece is greater than the length of the installation box housing. The length of the verification piece body is less than the length of the installation box housing.

[0012] By adopting the above technical solution, when the digital verification piece is installed inside the verification piece installation box, it will not easily fall off, and the verification piece body will not exceed the inner range of the verification piece installation box, and the reset elastic pieces will not protrude too much. The front end of the digital verification piece can be easily pushed into the inner side of the verification piece installation box by the male plug, and the installation process will not consume too much effort.

[0013] Furthermore, one of the locking claws is located above the verification piece installation box. There are a plurality of first sealing ring installation grooves on the upper shell above the annular connection protrusion. Each first sealing ring installation groove is internally provided with a first O-ring. The lower shell is provided with a second sealing ring installation groove. The second sealing ring installation groove is internally provided with a second O-ring. The inner diameter of the pipe body is greater than the outer diameter of the upper shell and less than the outer diameter of the first O-ring.

[0014] By adopting the above technical solution, the first sealing ring installation groove provides an installation position for the first O-ring, and the second sealing ring installation groove provides an installation position for the second O-ring. The inner diameter of the pipe body is greater than the outer diameter of the upper shell and less than the outer diameter of the first O-ring. Therefore, the first O-ring can closely fit the inner side of the pipe body, filling the gap between the pipe body and the upper shell, and ensuring a sealed structure is formed between the pipe body and the upper shell.

[0015] By adopting the above technical solution, the male plug can be firmly clamped on the QC shell by the locking claw, so that there is no looseness between the QC shell and the male plug.

[0016] Compared with the prior art, the present utility model has the following beneficial effects:

[0017] 1. By adopting the digital verification piece mechanism, a large number of digital information such as the production date, the batch number and the piece number of the day of the product can be engraved on the two-dimensional code on it. After the connecting device is assembled in place with the male plug of the counterpart, the verification piece automatically pops out, which is convenient for the operator to take down the verification card and perform a scan code confirmation to achieve the purpose of permanent storage and rapid traceability of product information;

[0018] 2. The calibration piece body provides an installation position for the reset elastic piece. The reset elastic piece has the ability of elastic deformation. It deforms under external force and returns to its original state after the external force is removed. The U-shaped notch provides a space for the elastic deformation of the reset elastic piece. The arc-shaped protrusion can ensure that the calibration piece body will not fall out of the installation box housing under the action of gravity. The information QR code can record a large amount of digital information such as the production date, the batch and the piece number of the day of the product. Only by scanning the code can the information be read, which can achieve the purpose of permanent storage and rapid traceability of product information. The grasping handle provides a grasping position for the user, enabling the user to hold the grasping handle and draw out the digital calibration piece from the inner side of the installation box housing. The access port provides an access space for the digital calibration piece. The parallel inner wall and the inclined inner wall cooperate with each other to limit the position of the digital calibration piece;

[0019] 3. The production and assembly process of the connecting device is simple and fast. The QC housing and the calibration piece installation box are integrally formed by injection molding, and the digital calibration piece is integrally formed by injection molding; the first O-ring and the second O-ring are sequentially assembled through auxiliary equipment to form the sub-assembly of the connecting device body; the digital calibration piece is manually installed in the sub-assembly of the connecting device body to form the connecting device assembly. The whole process is efficient and fast, greatly shortening the production time of the connecting device and improving the work efficiency. Brief Description of the Drawings

[0020] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of a connecting device with a digital calibration card mechanism mentioned in the present invention;

[0021] Figure 2 It is an exploded view of an embodiment of a connecting device with a digital calibration card mechanism mentioned in the present invention;

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the QC housing in an embodiment of a connecting device with a digital calibration card mechanism mentioned in the present invention;

[0023] Figure 4 It is a front view of the QC housing in an embodiment of a connecting device with a digital calibration card mechanism mentioned in the present invention;

[0024] Figure 5 It is Figure 4 a cross-sectional view taken along A-A in

[0025] Figure 6 It is a three-dimensional structural schematic diagram of the digital calibration piece in an embodiment of a connecting device with a digital calibration card mechanism mentioned in the present invention;

[0026] Figure 7Schematic diagram of the overall structure when the male plug is not installed in an embodiment of a connection device with a digital verification card mechanism according to the present utility model;

[0027] Figure 8 is Figure 7 Cross-sectional view taken along B-B in;

[0028] Figure 9 Schematic diagram of the overall structure when the male plug is installed and presses down the digital verification piece in an embodiment of a connection device with a digital verification card mechanism according to the present utility model;

[0029] Figure 10 is Figure 9 Cross-sectional view taken along C-C in;

[0030] Figure 11 Schematic diagram of the overall structure when the male plug is installed and the digital verification piece is not pulled out in an embodiment of a connection device with a digital verification card mechanism according to the present utility model;

[0031] Figure 12 is Figure 11 Cross-sectional view taken along D-D in;

[0032] Figure 13 Schematic diagram of the overall structure when the male plug is installed and the digital verification piece is pulled out in an embodiment of a connection device with a digital verification card mechanism according to the present utility model;

[0033] Figure 14 is Figure 13 Cross-sectional view taken along E-E in;

[0034] Reference numerals in the drawings of the specification include:

[0035] QC housing 1, upper housing 101, lower housing 102, connecting reinforcing rib 103, first sealing ring installation groove 1041, second sealing ring installation groove 1042, annular connecting protrusion 106, locking claw 107, verification piece installation box 2, installation box housing 201, access port 202, parallel inner wall 203, inclined inner wall 204, digital verification piece 3, verification piece main body 301, reset elastic piece 302, U-shaped notch 303, arc-shaped protrusion 304, information two-dimensional code 305, gripping handle 306, male plug 4, tube body 401, tapered inclined surface 402, first O-ring 501, second O-ring 502. Detailed implementation manners

[0036] In order to enable those skilled in the art to better understand the present utility model, the technical solutions of the present utility model will be further described below in conjunction with the drawings and embodiments.

[0037] Among them, the attached drawings are only for illustrative purposes, showing only schematic diagrams rather than physical diagrams, and should not be construed as a limitation on this patent; in order to better illustrate the embodiments of the present invention, some components in the attached drawings will be omitted, enlarged or reduced, which does not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted.

[0038] In the attached drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the attached drawings, and is 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. Therefore, the terms used to describe the positional relationship in the attached drawings are only for illustrative purposes and should not be construed as a limitation on this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0039] In the description of the present invention, unless otherwise clearly specified and defined, if terms such as "connection" are used to indicate the connection relationship between components, this term should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Embodiment:

[0041] Such as Figures 1-14As shown in the figure, a connection device with a digital verification card mechanism of the present utility model includes a QC housing 1 and a male plug 4. The QC housing 1 includes an upper housing 101 and a lower housing 102. An annular connection protrusion 106 is provided on the upper housing 101. The annular connection protrusion 106 is provided with locking claws 107 placed in a mirror image. A verification piece installation box 2 is provided on the upper housing 101. The verification piece installation box 2 includes an installation box housing 201. The installation box housing 201 is a hollow structure and has access ports 202 at both the upper and lower ends. A digital verification piece 3 is provided inside the installation box housing 201. The verification piece installation box 2 is inclined and installed on the outside of the upper housing 101, and the upper end of the verification piece installation box 2 is flush with the upper surface of the annular connection protrusion 106. A connection reinforcing rib 103 is provided between the installation box housing 201 and the upper housing 101. The male plug 4 includes a tube body 401 and a conical inclined surface 402. Specifically, by adopting the above technical solution, the QC housing 1 and the male plug 4 are axially docked, and the locking claws 107 fix the male plug 4. The bottom of the male plug 4 pushes out the digital verification piece 3 inside the verification piece installation box 2, and the bottom of the digital verification piece 3 is pushed out of the verification piece installation box 2, so that the digital verification piece 3 can be removed and a two-dimensional code can be engraved on it, achieving the purpose of permanent storage and rapid traceability of product information.

[0042] The digital verification piece 3 includes a verification piece main body 301. At the upper end of the verification piece main body 301, there are two mirror-image reset elastic pieces 302. Between the two reset elastic pieces 302, there is a U-shaped notch 303. The reset elastic pieces 302 will return to their original state after releasing the pressure when subjected to a certain pressure. On both sides of the verification piece main body 301, there are symmetric arc-shaped protrusions 304. On the surface of the verification piece main body 301, there is an information QR code 305. Below the verification piece main body 301, there is a gripping handle 306. Inside the installation box housing 201, there are parallel inner walls 203 and inclined inner walls 204. The inclined inner walls 204 are respectively connected to the access ports 202 and the parallel inner walls 203. Specifically, by adopting the above technical solution, the verification piece main body 301 provides an installation position for the reset elastic pieces 302. The reset elastic pieces 302 have the ability of elastic deformation, deform under external force and return to their original state after the external force is removed. The U-shaped notch 303 provides a space for the elastic deformation of the reset elastic pieces 302. The arc-shaped protrusions 304 can ensure that the verification piece main body 301 will not fall out of the installation box housing 201 under the action of gravity. The information QR code 305 can record a large amount of digital information such as the production date, the batch number and the piece number of the day of this product. Only by scanning the code can its information be read, which can achieve the purpose of permanent storage and rapid traceability of product information. The gripping handle 306 provides a gripping position for the user, enabling the user to hold the gripping handle 306 and pull out the digital verification piece 3 from the inside of the installation box housing 201. The access ports 202 provide a space for the digital verification piece 3 to enter and exit. The parallel inner walls 203 and the inclined inner walls 204 cooperate with each other to limit the position of the digital verification piece 3.

[0043] The distance between the parallel inner walls 203 is greater than the width of the access ports 202. The width of the verification piece main body 301 is less than the width of the access ports 202. The distance between the symmetric arc-shaped protrusions 304 provided on both sides of the verification piece main body 301 is greater than the width of the access ports 202 and less than the distance between the parallel inner walls 203. The distance between the two ends of the two reset elastic pieces 302 in the non-compressed state is greater than the distance between the parallel inner walls 203. The distance between the two ends of the two reset elastic pieces 302 when compressed towards the middle is less than the width of the access ports 202. The overall length of the digital verification piece 3 is greater than the length of the installation box housing 201. The length of the verification piece main body 301 is less than the length of the installation box housing 201. Specifically, by adopting the above technical solution, when the digital verification piece 3 is installed inside the verification piece installation box 2, it will not easily fall off, and the verification piece main body 301 will not exceed the inner range of the verification piece installation box 2 either, and the reset elastic pieces 302 will not protrude too much. The front end of the digital verification piece 3 can be easily pushed into the inside of the verification piece installation box 2 by the male plug 4, and the installation process will not consume too much effort.

[0044] One of the locking claws 107 is located above the calibration piece mounting box 2. On the upper housing 101 above the annular connecting protrusion 106, there are a plurality of first sealing ring mounting grooves 1041. Inside each of the first sealing ring mounting grooves 1041, there is a first O-ring 501. On the lower housing 102, there is a second sealing ring mounting groove 1042. Inside the second sealing ring mounting groove 1042, there is a second O-ring 502. The inner diameter of the pipe body 401 is larger than the outer diameter of the upper housing 101 and smaller than the outer diameter of the first O-ring 501. Specifically, by adopting the above technical solution, the first sealing ring mounting groove 1041 provides an installation position for the first O-ring 501, the second sealing ring mounting groove 1042 provides an installation position for the second O-ring 502, and the inner diameter of the pipe body 401 is larger than the outer diameter of the upper housing 101 and smaller than the outer diameter of the first O-ring 501. Therefore, the first O-ring 501 can closely fit the inner side of the pipe body 401, filling the gap between the pipe body 401 and the upper housing 101, ensuring that a sealed structure is formed between the pipe body 401 and the upper housing 101.

[0045] The assembly process of the connecting device is as Figure 1 , 3 , 6 shows that the QC housing 1 and the calibration piece mounting box 2 are integrally formed by injection molding, and the digital calibration piece 3 is integrally formed by injection molding; the first O-ring 501 and the second O-ring 502 are sequentially assembled through auxiliary equipment to form the connecting device body sub-assembly; the digital calibration piece 3 is manually installed in the connecting device body sub-assembly to form the connecting device assembly. The whole process is efficient and fast, greatly shortening the production time of the connecting device and improving the work efficiency.

[0046] During the specific use process, as Figure 7 , 8 shows, first, the connecting device assembly is inspected to ensure that the digital calibration piece 3 is installed in the correct position, and then the male plug 4 is vertically placed directly above the QC housing 1, and it is ensured that the axis of the male plug 4 is in a straight line with the axis of the QC housing 1; as Figure 9 , 10 , 11, 12 show, the male plug 4 moves vertically downward, the conical inclined surface 402 contacts the surface of the locking claw 107 and pushes it outward, and the male plug 4 is continuously pushed until the male plug 4 reaches its limit position. The lower surface of the male plug 4 contacts the annular connecting protrusion 106. At this time, the locking claw 107 contracts inward under the restoring force provided by itself and locks the male plug 4. At the same time, the lower end surface of the male plug 4 pushes the digital calibration piece 3 downward, and the digital calibration piece 3 automatically moves under the elastic force provided by its own reset spring piece 302 until the grasping handle 306 is exposed outside the bottom of the calibration piece mounting box 2; as Figure 13 , 14As shown, the user can hold the gripping handle 306 to take out the digital verification piece 3 from the verification piece installation box 2. Subsequently, the information QR code 305 on the digital verification piece 3 is used to enter a large amount of digital information such as the production date, the batch number and the piece number of the day of this product. After the entry is completed, the digital verification piece 3 is inserted back into the verification piece installation box 2 until the subsequent user needs to read a large amount of digital information such as the production date, the batch number and the piece number of the day of this product. Then, the digital verification piece 3 is taken out from the verification piece installation box 2, and the information QR code 305 is scanned to continue reading the digital information.

[0047] The above are only the embodiments of the present utility model. Common knowledge such as the specific structure and characteristics in the solution is not described in detail herein. Those of ordinary skill in the art know all the common general technical knowledge in the technical field to which the utility model belongs before the filing date or the priority date, can know all the existing technologies in this field, and have the ability to apply the conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given in this application, combine their own abilities to improve and implement this solution. Some typical well-known structures or well-known methods should not become an obstacle for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present utility model, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent.

Claims

1. A connecting device with a digital verification card mechanism, comprising a QC housing (1) and a male plug (4), characterized in that: The QC housing (1) includes an upper housing (101) and a lower housing (102). The upper housing (101) is provided with an annular connecting protrusion (106). The annular connecting protrusion (106) is provided with locking claws (107) placed in a mirror image. The upper housing (101) is provided with a calibration piece mounting box (2). The calibration piece mounting box (2) includes a mounting box housing (201). The mounting box housing (201) is of a hollow structure and has access openings (202) at both the upper and lower ends. A digital calibration piece (3) is provided inside the mounting box housing (201). The calibration piece mounting box (2) is inclined and mounted on the outside of the upper housing (101), and the upper end of the calibration piece mounting box (2) is flush with the upper surface of the annular connecting protrusion (106). A connecting reinforcing rib (103) is provided between the mounting box housing (201) and the upper housing (101). The male plug (4) includes a tube body (401) and a conical inclined surface (402).

2. The connecting device with a digital verification card mechanism according to claim 1, characterized in that: The digital calibration piece (3) includes a calibration piece main body (301). Two reset elastic pieces (302) placed in a mirror image are provided at the upper end of the calibration piece main body (301). A U-shaped notch (303) is provided between the two reset elastic pieces (302). The reset elastic piece (302) will return to its original state after releasing the pressure when subjected to a certain pressure.

3. A connecting device with a digital verification card mechanism according to claim 2, characterized in that: Symmetric arc-shaped protrusions (304) are provided on both side surfaces of the calibration piece main body (301). An information QR code (305) is provided on the surface of the calibration piece main body (301). A gripping handle (306) is provided below the calibration piece main body (301).

4. The connecting device with a digital verification card mechanism according to claim 3, characterized in that: Parallel inner walls (203) and inclined inner walls (204) are provided inside the mounting box housing (201). The inclined inner walls (204) are respectively connected to the access openings (202) and the parallel inner walls (203).

5. The connecting device with a digital verification card mechanism according to claim 4, characterized in that: The distance between the parallel inner walls (203) is greater than the width of the access openings (202). The width of the calibration piece main body (301) is less than the width of the access openings (202).

6. The connecting device with a digital verification card mechanism as described in claim 5, characterized in that: The distance between the symmetric arc-shaped protrusions (304) provided on both side surfaces of the calibration piece main body (301) is greater than the width of the access openings (202) and less than the distance between the parallel inner walls (203). The distance between the two end points on both sides of the two reset elastic pieces (302) in the non-compressed state is greater than the distance between the parallel inner walls (203). The distance between the two end points on both sides of the two reset elastic pieces (302) when compressed towards the middle is less than the width of the access openings (202). The overall length of the digital calibration piece (3) is greater than the length of the mounting box housing (201). The length of the calibration piece main body (301) is less than the length of the mounting box housing (201).

7. The connecting device with a digital verification card mechanism according to claim 1, characterized in that: One of the locking claws (107) is located above the calibration piece mounting box (2). A plurality of first sealing ring mounting grooves (1041) are provided on the upper housing (101) above the annular connecting protrusion (106). A first O-ring (501) is provided inside each of the first sealing ring mounting grooves (1041).

8. The connecting device with a digital verification card mechanism according to claim 7, characterized in that: The lower housing (102) is provided with a second sealing ring mounting groove (1042), and a second O-ring (502) is arranged inside the second sealing ring mounting groove (1042).

9. The connecting device with a digital verification card mechanism according to claim 8, characterized in that: The inner diameter of the pipe body (401) is larger than the outer diameter of the upper housing (101) and smaller than the outer diameter of the first O-ring (501).

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