A venting joint with a locking device

Abstract

The present application relates to a ventilation joint with a locking device, which belongs to the field of medical device technology. The ventilation joint with a locking device comprises a main joint and a secondary plug. The main joint comprises a main cylinder, an inner partition, a first ventilation pipe, and a first locking guide rail. The inner partition is connected to the inner circumferential wall of the main cylinder, the first ventilation pipe extends from the inner partition toward the head cavity, the first locking guide rail is located in the head cavity and connected to the inner circumferential wall of the main cylinder and forms a locking space between the inner partition. A locking groove is provided at the front end of the side of the first ventilation pipe toward the first locking guide rail; the secondary plug comprises a second ventilation pipe, a second locking guide rail, and an axial rib. The second ventilation pipe is used to match and sleeve with the first ventilation pipe, the second locking guide rail is arranged on the outer periphery of the head end of the second ventilation pipe, the second locking guide rail is used to match and screw into the locking space, the axial rib is arranged on the outer circumferential wall of the second ventilation pipe and forms a snap fit with the locking groove when the secondary plug is rotated into place relative to the main joint.

Description

Technical Field

[0001] The present technology mainly relates to the field of medical device technology, in particular to a ventilation connector with a locking device. Background Art

[0002] In the field of medical device technology, ensuring the stability and sealing of the connector has always been a key challenge. Most of the gas sampling tube connectors currently on the market use the traditional tight-fitting method, such as the standard Luer head for connection. However, this method has obvious defects: on the one hand, there is often a step difference between the main connector and the auxiliary plug after tight fitting, resulting in a dead space in the middle of the gas path. This dead space will interfere with the stability of the airflow and thus affect the accuracy of the test data; on the other hand, relying solely on tight fitting to achieve the anti-falling function of the connector is inadequate in practicality, especially when the air pressure is too high or subjected to external force, the connector is very likely to spin and fall off, seriously affecting the safety and stability of gas transmission.

[0003] At the same time, although some ventilation connectors with locking mechanisms have appeared on the market, they still have many shortcomings in terms of structural complexity, ease of operation and cost. These connectors either have unreliable locking mechanisms or cumbersome operation processes, which makes it difficult to meet the multiple requirements of modern industrial and medical fields for simple, efficient and safe gas transmission connectors. Therefore, how to enhance the connection stability and sealing of ventilation connectors while maintaining a simple structure and easy operation has become a technical problem that needs to be solved in this field. Summary of the invention

[0004] The present application provides a ventilating joint with a locking device, which effectively solves the problems of poor air tightness and easy falling off of traditional joints.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is to provide a ventilating joint with a locking device, the ventilating joint with a locking device comprising:

[0006] The main joint includes a main cylinder, an inner partition, a first ventilation pipe, and a first locking guide rail. The inner partition is connected to the inner circumferential wall of the main cylinder to divide the main cylinder into a head cavity and a tail cavity. The first ventilation pipe extends from the inner partition toward the head cavity. The first locking guide rail is located in the head cavity and connected to the inner circumferential wall of the main cylinder. The distance between the first locking guide rail and the inner partition gradually decreases from the starting end to the end end. The first locking guide rail is provided with a locking groove on the side of the first ventilation pipe.

[0007] The auxiliary plug includes a second ventilation pipe, a second locking guide rail, and an axial rib. The second ventilation pipe is used to match and sleeve with the first ventilation pipe, and the second locking guide rail is arranged at the head end of the second ventilation pipe. The distance between the second locking guide rail and the end face of the head end of the second ventilation pipe gradually increases from the starting end to the end end. The second locking guide rail is used to match and screw into the locking space between the first locking guide rail and the inner partition. The axial rib is arranged on the outer peripheral wall of the second ventilation pipe and forms a snap fit with the locking groove when the auxiliary plug is rotated into place relative to the main joint.

[0008] By adopting the above technical solution, the second locking rail is used to match and screw into the locking space between the first locking rail and the inner partition, and cooperates with the first locking rail to achieve a tight fit between the secondary plug and the main connector. The distance between the second locking rail and the end face of the second vent pipe head end gradually increases from the beginning to the end, and this design helps to provide a gradually enhanced locking effect when screwing in. At the same time, through the interaction between the axial ribs and the locking grooves, a safe and reliable connection method is provided.

[0009] Optionally, the free end of the first ventilation pipe protrudes from the end of the main cylinder.

[0010] By adopting the above technical solution, the free end of the first ventilation pipe protrudes, making it easier to align with the second ventilation pipe of the auxiliary plug and achieve connection.

[0011] Optionally, the diameter of the first ventilation pipe is smaller than the diameter of the second ventilation pipe, and the first ventilation pipe is inserted into the second ventilation pipe when the secondary plug is rotated and matched relative to the main connector.

[0012] Optionally, the second ventilation pipe is in a stepped tube shape, including a first tube body portion and a second tube body portion axially connected, the diameter of the first tube body portion is larger than the diameter of the second tube body portion, and the first tube body portion is used to be plugged into the first ventilation pipe.

[0013] Optionally, the auxiliary plug further includes a rotating handle, and the rotating handle is connected to the outer peripheral wall of the second ventilation pipe.

[0014] By adopting the above technical solution, the rotating handle makes it more convenient to operate the auxiliary plug, especially when the auxiliary plug needs to be connected or separated from the main connector.

[0015] Optionally, the auxiliary plug also includes an extension piece connected to the rotating handle, and the distance between the outer edge of the rotating handle and the axis of the auxiliary plug is smaller than the distance between the outer edge of the extension piece and the axis of the auxiliary plug. When the auxiliary plug is rotated relative to the main connector, the extension piece enters the head cavity.

[0016] By adopting the above technical solution, when the secondary plug is rotated relative to the main connector, the extension piece enters the head cavity. The extension piece plays an auxiliary guiding role during the insertion process, helping to guide the secondary plug to correctly align and insert the main connector. The distance between the outer edge of the extension piece and the axis of the secondary plug is smaller than the distance between the inner wall of the head cavity and the axis of the main connector.

[0017] Optionally, the first locking guide rail and the second locking guide rail are both two symmetrically arranged pieces.

[0018] Optionally, the main joint further includes a plug-in tube, which includes a first barrel and a second barrel, the diameter of the first barrel is greater than the diameter of the second barrel, and the first barrel is matched and plugged with the tail cavity.

[0019] By adopting the above technical solution, the different diameter designs of the first cylinder and the second cylinder provide a flexible and reliable connection solution, which is suitable for systems that require precise control of gas flow.

[0020] Optionally, the main joint further includes a water filtration membrane, and the water filtration membrane is arranged at the free end of the first cylinder.

[0021] By adopting the above technical solution, the water filter membrane can filter moisture, prevent droplets or moisture from entering the ventilation system, and keep the gas dry.

[0022] Optionally, the main joint further includes absorbent cotton, and the absorbent cotton is arranged in the first cylinder.

[0023] By adopting the above technical solution, the absorbent cotton is used in combination with the water filter membrane, which can keep the gas dry more permanently and effectively.

[0024] The beneficial effects of this application are:

[0025] Compared with the prior art, the technical effects of this technical solution are mainly reflected in the following aspects: First, a locking groove is provided on the side of the first locking guide rail facing the first ventilation pipe, which prevents accidental disengagement through a locking mechanism, and has high safety and reliability. The axial ribs are provided on the outer peripheral wall of the second ventilation pipe and form a snap fit with the locking groove when the auxiliary plug is rotated into place relative to the main connector, which significantly reduces the risk of the connector falling off due to external force or air pressure changes, thereby greatly improving the stability and safety and reliability during the gas transmission process. Secondly, while maintaining a simple structure, this technology optimizes the matching and rotation methods of each component, making the installation and operation of the connector more convenient and efficient. Finally, through a series of innovative structural optimizations, such as the protruding design of the first ventilation pipe and the stepped tubular structure of the second ventilation pipe, the overall performance of the ventilation connector is further enhanced, making it show significant superiority in efficient and safe gas transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0027] Figure 1 A schematic diagram of the disassembly of the main connector and the auxiliary plug of the vent connector with a locking device provided in the embodiment of the application;

[0028] Figure 2 A schematic diagram of the main connector and the auxiliary plug combination of the vent connector with a locking device provided in the embodiment of the application;

[0029] Figure 3 A schematic cross-sectional view of a main connector and a secondary plug of a vent connector with a locking device provided in an embodiment of the application after being assembled;

[0030] Figure 4 , Figure 5 A schematic diagram of the main joint features of a vent joint with a locking device provided in an embodiment of the application;

[0031] Figure 6 , Figure 7 A schematic diagram showing the features of a secondary plug of a ventilating connector with a locking device provided in an embodiment of the application;

[0032] Description of reference numerals:

[0033] Main joint; 20, auxiliary plug; 101, main cylinder; 102, head cavity; 103, tail cavity; 104, inner partition; 105, first ventilation pipe; 106, first locking guide rail; 107, positioning groove; 108, plug-in cylinder; 109, first cylinder; 110, second cylinder; 111, water filter membrane; 112, absorbent cotton; 201, second ventilation pipe; 202, second locking guide rail; 203, axial ribs; 204, rotating handle; 2011, first tube body; 2012, second tube body; 207, extension piece. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), such directional indications are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0037] Please also read Figures 1 to 7 The present application provides a ventilation connector with a locking device, which includes a main connector 10 and a secondary plug 20.

[0038] The main joint 10 includes a main cylinder 101 , an inner partition 104 , a first ventilation pipe 105 , and a first locking guide rail 106 .

[0039] The inner partition 104 is connected to the inner circumferential wall of the main cylinder 101 to divide the main cylinder 101 into a head cavity 102 and a tail cavity 103. The first ventilation pipe 105 extends from the inner partition 104 toward the head cavity 102. The first locking guide rail 106 is located in the head cavity 102 and is connected to the inner circumferential wall of the main cylinder 101 and forms a locking space with the inner partition 104. The distance between the first locking guide rail 106 and the inner partition 104 gradually decreases from the starting end to the end end. The first locking guide rail 106 is provided with a locking groove 107 on the side facing the first ventilation pipe 105, that is, the front end of the inner circumferential side of the first locking guide rail 106 is provided with a locking groove 107.

[0040] The secondary plug 20 includes a second vent pipe 201 , a second locking guide rail 202 , an axial rib 203 , and a rotating handle 204 .

[0041] The second vent pipe 201 is used to match and sleeve with the first vent pipe 105, the second locking rail 202 is arranged at the outer periphery of the head end of the second vent pipe 201, the distance between the second locking rail 202 and the end face of the head end of the second vent pipe 201 gradually increases from the beginning to the end, the second locking rail 202 is used to match and screw into the aforementioned locking space, that is, the gap between the first locking rail 106 and the inner partition 104, the axial rib 203 is arranged on the outer peripheral wall of the second vent pipe 201 and forms a snap fit with the locking groove 107 when the auxiliary plug 20 is rotated into place relative to the main connector 10. This solution has a simple and easy-to-make locking structure, which can effectively prevent loosening and air leakage.

[0042] The second locking rail 202 is used to match the gap between the first locking rail 106 and the inner partition 104, and cooperates with the first locking rail 106 to achieve a tight fit between the secondary plug 20 and the main connector 10. The distance between the second locking rail 202 and the end face of the head end of the second vent pipe 201 gradually increases from the beginning to the end, and this design helps to provide a gradually enhanced locking effect when screwing in. At the same time, through the interaction between the axial ribs 203 and the locking grooves 107, a safe and reliable connection method is provided.

[0043] See also Figure 3 As shown, the first vent pipe 105 and the second vent pipe 201 are tightly pressed against each other, and when the main connector 10 and the auxiliary plug 20 are rotated into place and locked with a buckle, the first vent pipe 105 and the second vent pipe 201 are also synchronously pressed against each other and tightly pressed into place. The dead space formed in this way is extremely small. Most of the similar connectors in the prior art have large dead spaces, which can lead to slow measurement response speed, low accuracy and instability caused by airflow disturbance. The free end of the first vent pipe 105 protrudes, making it easier to align and connect with the second vent pipe 201 of the auxiliary plug 20. The first vent pipe 105 with a smaller diameter can be inserted into the second vent pipe 201 with a larger diameter to achieve a tight matching socket.

[0044] See also Figure 6 , Figure 7 As shown, the second ventilation pipe 201 is composed of two tube parts with different diameters, namely the first tube part 2011 and the second tube part 2012, and a through hole connecting the first tube part 2011 and the second tube part 2012. The first tube part 2011 and the first ventilation pipe 105 have mutually matching tapers, and the inner circumference of the second tube part 2012 is a straight cylinder cavity for connecting the air guide hose. The first locking rail 106 and the second locking rail 202 are evenly distributed in an axially symmetrical manner.

[0045] See also Figure 3 , Figure 6 , Figure 7As shown, the secondary plug 20 further includes an extension piece 207 connected to the rotating handle 204, and the distance between the outer side of the extension piece 207 and the axis of the secondary plug 20 is smaller than the distance between the inner wall of the head cavity 102 and the axis of the main connector 10. When the secondary plug 20 is rotated relative to the main connector 10, the extension piece 207 enters the head cavity 102. The extension piece 207 integrally connects the second locking rail 202 and the rotating handle 204 to enhance the structural strength of the second locking rail 202.

[0046] See also Figure 3 As shown, the main joint 10 includes a plug-in cylinder 108, and the plug-in cylinder 108 includes a first cylinder 109 and a second cylinder 110. The different diameter designs of the first cylinder 109 and the second cylinder 110 provide a flexible and reliable connection solution, which is suitable for systems that require precise control of gas flow.

[0047] See also Figure 3 As shown, the main joint 10 also includes a water filter membrane 111 and a water absorbent cotton 112. The water filter membrane 111 is arranged at the free end of the first cylinder 109, and can filter water, prevent droplets or moisture from entering the ventilation system, and keep the gas dry. The water absorbent cotton 112 is arranged in the first cylinder 109. The water absorbent cotton 112 is used in combination with the water filter membrane 111 to keep the gas dry more durable and effectively.

[0048] Please also read Figures 1 to 7 , use one hand to hold the surface of the main connector 10, and use the anti-slip grooves on it to ensure a stable grip. With the other hand, hold the rotating handle 204 at the upper end of the auxiliary plug 20, and prepare for rotation and insertion. Align the first vent pipe 105 of the main connector 10 with the second vent pipe 201 of the auxiliary plug 20, and ensure that the axes of the vent pipes of the two are aligned. Under the mutual guidance of the first locking rail 106 and the second locking rail 202, start to rotate the auxiliary plug 20 and sink it, and insert it into the main connector 10. When the auxiliary plug 20 is rotated and inserted to the bottom end, a slight resistance will be felt. Continue to rotate and insert it with force until there is an obvious interference pause feeling in the hand, which indicates that the locking groove 107 of the main connector 10 has been locked with the axial rib 203 of the auxiliary plug 20. This pause feeling is a signal that the lock is in place, which means that the ventilation connector has been successfully assembled.

[0049] In summary, it is easy for a person skilled in the art to understand that in the ventilation joint with a locking device provided by the present application, the connection process is designed to be simple and effective, and the tight fit and locking of the ventilation joint are ensured by the cooperation of the rotating handle 204 and the locking guide rail. The locking design of the positioning groove 107 and the axial rib 203 provides additional security to ensure the stability and reliability of the connection. This design also allows the user to judge whether the connection is successful by feel, further improving the intuitiveness and convenience of the operation.

[0050] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. For those skilled in the art, various equivalent replacements, modifications and deformations can be made to the above embodiments without departing from the principles and spirit of the present application. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be included in the protection scope of the present application.

Claims

1. A vent connector with a locking device, characterized in that: The vent connector with locking device comprises: A main joint (10) comprises a main cylinder (101), an inner baffle (104), a first ventilation pipe (105), and a first locking guide rail (106), wherein the inner baffle (104) is connected to the inner peripheral wall of the main cylinder (101), the first ventilation pipe (105) extends from the inner baffle, the first locking guide rail (106) is connected to the inner peripheral wall of the main cylinder (101) and forms a locking space with the inner baffle (104), and a locking groove (107) is provided at the front end of the inner peripheral side of the first locking guide rail (106); The secondary plug (20) comprises a second ventilation pipe (201), a second locking guide rail (202), and an axial rib (203); the second ventilation pipe (201) is used for rotationally matching and sleeve-engaging with the first ventilation pipe (105); the second locking guide rail (202) is arranged on the outer periphery of the head end of the second ventilation pipe (201); the second locking guide rail (202) is used for matching and screwing into the locking space; the axial rib (203) is arranged on the outer peripheral wall of the second ventilation pipe (201) and forms a snap fit with the locking groove (107) when the secondary plug (20) is rotated into place relative to the main connector (10).

2. The vent connector with a locking device according to claim 1, characterized in that: When the main connector (10) and the auxiliary plug (20) are rotated into position and locked with a buckle, the first ventilation pipe (105) and the second ventilation pipe (201) are also synchronously pressed against each other and fit tightly into position.

3. The vent connector with a locking device according to claim 1, characterized in that: The diameter of the first ventilation pipe (105) is smaller than the diameter of the second ventilation pipe (201), and when the auxiliary plug (20) is rotated relative to the main connector (10), the first ventilation pipe (105) is inserted into the second ventilation pipe (201).

4. The vent connector with a locking device according to claim 3, characterized in that: The second ventilation pipe (201) comprises a first tube body portion (2011) and a second tube body portion (2012) which are axially connected, and a through hole which connects the first tube body portion (2011) and the second tube body portion (2012); the first tube body portion (2011) and the first ventilation pipe (105) have mutually matching tapers; the inner circumference of the second tube body portion (2012) is a straight tube cavity for connecting an air guide hose.

5. The vent connector with a locking device according to claim 4, characterized in that: The secondary plug (20) further comprises a rotating handle (204), wherein the rotating handle (204) is connected to the outer peripheral wall of the second ventilation pipe (201).

6. The vent connector with a locking device according to claim 5, characterized in that: The secondary plug (20) further comprises an extension piece (207) connected to the rotating handle (204), wherein the extension piece (207) integrally connects the second locking guide rail (202) and the rotating handle (204).

7. The vent connector with a locking device according to claim 1, characterized in that: The first locking guide rail (106) and the second locking guide rail (202) are both axially symmetrically and evenly distributed.

8. The vent connector with a locking device according to claim 1, characterized in that: The main joint (10) further comprises a plug-in cylinder (108), wherein the plug-in cylinder (108) comprises a first cylinder body (109) and a second cylinder body (110), wherein the diameter of the first cylinder body (109) is greater than the diameter of the second cylinder body (110), and the first cylinder body (109) is matched and plugged with the main cylinder body (101).

9. The vent connector with a locking device according to claim 8, characterized in that: The main joint (10) further comprises a water filtration membrane (111), wherein the water filtration membrane (111) is arranged at the free end of the first cylinder (109).

10. The vent connector with a locking device according to claim 8, characterized in that: The main joint (10) further comprises water-absorbing cotton (112), and the water-absorbing cotton (112) is arranged in the first cylinder (109).

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