A high pressure threaded connector

Abstract

The utility model provides a kind of high-pressure threaded connector, including cylindrical connector, its front end is equipped with threaded hole, bottom center has the through-hole of penetrating rear end, threaded hole bottom has coaxial inner tube, inner tube front end is slotted and is equipped with protruding positioning part.Outside wall is also included with outer thread connecting pipe, and threaded hole is threadedly connected, its inner wall is equipped with the positioning recess corresponding with positioning part, positioning part is embedded recess and realizes circumferential fixation when screwing.In addition, slotted and threaded hole bottom interval promotes sealing;Inner tube front end extends and facilitates fluid transition;Connector rear end has output pipe;Outside wall ridge helps hand-held operation;Positioning recess side wall chamfer facilitates assembly.The present application is suitable for various medical high-pressure pipeline connection, effectively improves connection reliability.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, specifically to a high-pressure threaded connector. Background Technology

[0002] In the medical field, high-pressure threaded connectors play a crucial role as a key connection component. They are typically made of metal or high-strength engineering plastics, and their main structure is equipped with internal or external threads. These threads are designed to securely connect two medical tubing, instrument interfaces, or other components together through a tight mechanical engagement. Furthermore, to ensure reliable airtightness and liquid tightness at the connection points, effectively preventing gas or liquid leakage and guaranteeing the safety of medical equipment during use, these connectors are generally also equipped with sealing gaskets or rubber rings.

[0003] Currently, high-pressure threaded connectors are widely used in various equipment and pipeline connection scenarios in the medical industry. Whether in various medical gas delivery systems to ensure the accurate and stable delivery of gases such as oxygen and nitrous oxide to patients, or in liquid injection and drainage systems to ensure the smooth flow of liquids such as medications and irrigation solutions according to predetermined requirements, they play an indispensable role in connection.

[0004] However, when high-pressure threaded connectors operate under high-pressure environments, the existing structure relying solely on threaded connections reveals a significant drawback: frequent loosening of the connection. During the operation of medical equipment, continuous fluctuations in internal pressure and vibrations gradually weaken the interlocking force between the threads. Over time, loosening occurs at the connection points. This can lead to gas or liquid leaks, causing operational deviations in the medical equipment and affecting treatment outcomes. In medical scenarios requiring extremely high pressure control precision, such as hyperbaric oxygen therapy equipment and certain high-end fluid infusion devices, pressure instability caused by loose connections can even pose a direct threat to patient safety. Furthermore, frequent loosening increases the frequency of equipment maintenance, reduces equipment efficiency, and raises medical costs.

[0005] In summary, existing high-pressure threaded connectors have unresolved issues regarding connection stability under high-pressure environments, necessitating a new technical solution to overcome these shortcomings and meet the stringent requirements of the medical field for equipment safety, stability, and efficiency. Summary of the Invention

[0006] In view of the problems pointed out in the background art, this utility model proposes a high-pressure threaded connector to solve the above-mentioned technical problems.

[0007] The technical solution of this utility model is implemented as follows:

[0008] A high-pressure threaded connector includes a connector head. The front end of the connector head is provided with a threaded hole. The center of the bottom of the threaded hole is provided with a through hole that penetrates the rear end of the connector head. The bottom of the threaded hole is provided with an inner tube coaxial with the through hole. The front end of the inner tube is provided with a slot that penetrates both radially on both sides. The slot divides the front end of the inner tube into two parts. The outer side walls of the two parts are respectively provided with protruding positioning parts.

[0009] The present invention is further configured such that the slot and the bottom of the threaded hole are spaced apart.

[0010] The present invention is further configured such that the front end of the inner tube extends to the outside of the connector.

[0011] The present invention is further configured such that the rear end of the connector is provided with a rearwardly extending output tube.

[0012] The present invention is further configured such that multiple protruding ridges are provided on the outer side wall of the connector along the front-back direction, and the multiple protruding ridges are spaced apart in the circumferential direction of the connector.

[0013] The present invention is further provided that a sealing ring is provided at the bottom of the threaded hole.

[0014] The present invention is further configured to include a connecting pipe, which is threadedly connected to a threaded hole. The inner diameter of the connecting pipe is equal to the outer diameter of the inner pipe. The inner wall of the connecting pipe is provided with a positioning groove corresponding to the positioning part. When the connecting pipe is just tightened with the threaded hole, the positioning part just enters the positioning groove.

[0015] The present invention is further provided that the side wall of the positioning groove is chamfered.

[0016] By adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0017] The high-pressure threaded connector provided by this utility model adds a circumferential positioning structure between the inner tube and the connecting tube on the basis of the threaded connection. When the connecting tube is tightened with the threaded hole, the positioning part on the inner tube enters the positioning groove inside the connector, thus solving the problem of loosening that may occur under high pressure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments 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.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is an exploded view of the present invention.

[0021] Figure 3 This is a cross-sectional view of the present invention.

[0022] The following are the labels in the attached diagram: 1. Connector; 2. Threaded hole; 3. Through hole; 4. Inner tube; 5. Groove; 6. Positioning part; 7. Output tube; 8. Raised ridge; 9. Sealing ring; 10. Connecting tube; 11. Groove; 12. Chamfer. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] For reference as follows Figures 1-3 The present invention will be described as follows:

[0025] Example: A high-pressure threaded connector includes a cylindrical connector 1, and a threaded hole 2 is provided at the front end of the connector 1. The threaded hole 2 is used to make a threaded connection with the connecting pipe 10.

[0026] The bottom center of the threaded hole 2 has a through hole 3 that passes through the rear end of the connector 1. The through hole 3 is there to realize the function of fluid (gas or liquid) transmission channel, so that medical gas or liquid can pass through the connector smoothly and ensure the normal operation of medical equipment.

[0027] The bottom of the threaded hole 2 is provided with an inner tube 4 that is coaxial with and connected to the through hole 3, which is a key fluid guiding component in the entire connector structure.

[0028] The front end of the inner tube 4 is provided with a slot 5 that runs through both radial sides of it. The slot 5 divides the front end of the inner tube 4 into two parts. The slot 5 enables the front end of the inner tube 4 to have a certain elastic deformation capability, providing a basis for subsequent cooperation with the connecting tube 10 to achieve circumferential fixation.

[0029] The outer walls of the two parts are respectively provided with protruding positioning parts 6. The shape and size of the positioning parts 6 match the positioning grooves 11 on the inner wall of the connecting pipe 10. Their function is to cooperate with the positioning grooves 11 to form a circumferential fixing structure when the connecting pipe 10 is tightened in place, which effectively prevents the connecting pipe 10 from loosening and rotating due to circumferential forces (such as equipment vibration, fluid impact and torque) under high pressure, and greatly enhances the stability of the connection.

[0030] It also includes a connecting pipe 10, which has an external thread on its outer wall. The connecting pipe 10 is threadedly connected to the threaded hole 2, which is the initial mechanical structure for achieving the connection.

[0031] The inner diameter of the connecting pipe 10 is equal to the outer diameter of the inner pipe 4.

[0032] The inner wall of the connecting tube 10 is provided with a positioning groove 11 corresponding to the positioning part 6. The depth, width, and shape of the positioning groove 11 are designed according to the size of the positioning part 6 to ensure that the positioning part 6 can be smoothly inserted and to form a tight fit after insertion, thus limiting the relative circumferential displacement between the connecting tube 10 and the connector 1. When the connecting tube 10 is just tightened with the threaded hole 2, the positioning part 6 just enters the positioning groove 11. At this time, the circumferential positioning structure takes effect, providing reliable anti-loosening protection for the connector under high-pressure conditions.

[0033] Connection process and anti-loosening principle:

[0034] When the connecting tube 10 is tightened into the threaded hole 2 of the connector 1, the inner tube 4 gradually enters the connecting tube 10. Since the inner diameter of the connecting tube 10 is equal to the outer diameter of the inner tube 4, a tight fit is formed between them. As the tightening action continues, the front end of the inner tube 4 is squeezed by the positioning part 6. Due to the presence of the slot 5, the front end of the inner tube 4 will deform and contract into the slot 5. At this time, the outer diameter of the inner tube 4 is slightly reduced, making it easier for the connecting tube 10 to continue to screw in. When the connecting tube 10 is tightened to the position where the positioning part 6 just enters the positioning groove 11, the inner tube 4 is no longer squeezed, its deformation is restored, and the inner tube 4 and the connecting tube 10 are circumferentially fixed through the tight fit of the positioning part 6 and the positioning groove 11. In this way, based on the traditional threaded connection that relies on axial friction to provide fastening force, an additional circumferential positioning structure is added, which effectively resists the connection loosening problem that may occur under high pressure due to various complex forces, ensuring the reliability and stability of the connection of medical equipment under high pressure conditions, and ensuring the safe and smooth operation of the medical process.

[0035] A sealing ring 9 is provided at the bottom of the threaded hole 2, and the slot 5 is spaced apart from the bottom of the threaded hole 2. This spacing is of vital importance, especially in improving the sealing performance between the connecting pipe 10 and the sealing ring 9. If there is no gap between the slot 5 and the bottom of the threaded hole 2, the stress generated when the front end of the inner tube 4 deforms is likely to be transmitted to the area where the sealing ring 9 is located, which would damage the sealing effect of the sealing ring 9 and increase the risk of leakage.

[0036] The front end of the inner tube 4 extends to the outside of the connector 1. After the front end of the inner tube 4 extends out, it can contact the inner wall of the connector 10 earlier when it is engaged with the connector 10, so that the front end of the inner tube 4 can enter the connector 10 first.

[0037] The rear end of connector 1 is provided with a rearward-extending output pipe 7, which provides a complete and orderly path for fluid transmission.

[0038] Multiple raised ridges 8 are provided on the outer side wall of connector 1 along the front-to-back direction, and the multiple raised ridges 8 are spaced apart in the circumferential direction of connector 1. This design is mainly to enhance the feel of operating connector 1 by hand.

[0039] The sidewall of the positioning groove 11 is chamfered 12. During the tightening process of the connecting pipe 10 and the connector 1, the positioning part 6 needs to be accurately embedded in the positioning groove 11 to achieve effective circumferential fixation and prevent loosening of the connection. However, if the sidewall of the positioning groove 11 does not have chamfer 12, in actual operation, due to factors such as machining accuracy and assembly errors, the positioning part 6 can easily interfere with the sidewall of the positioning groove 11, hindering the smooth embedding of the positioning part 6. The chamfer 12 is equivalent to forming a guide slope at the entrance of the positioning groove 11. When the positioning part 6 approaches the positioning groove 11, the chamfer 12 can guide the positioning part 6 to gradually slide into the groove, reducing the probability of collision between the positioning part 6 and the sidewall, and improving the efficiency and accuracy of assembly.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-pressure threaded connector comprising a connecting head, a threaded hole being provided at a front end of the connecting head, a through hole being provided at a center of a bottom of the threaded hole and penetrating through a rear end of the connecting head, characterized in that: The bottom of the threaded hole is provided with an inner tube coaxial with the through hole. The front end of the inner tube is provided with a slot that runs through both radial sides of the inner tube. The slot divides the front end of the inner tube into two parts, and the outer walls of the two parts are respectively provided with protruding positioning parts.

2. A high-pressure threaded connector according to claim 1, characterized in that: The slot and the bottom of the threaded hole are spaced apart.

3. A high-pressure threaded connector according to claim 1, characterized in that: The front end of the inner tube extends to the outside of the connector.

4. A high-pressure threaded connector according to claim 1, characterized in that: The connector has a rearward-extending output tube at its rear end.

5. A high-pressure threaded connector according to claim 1, characterized in that: The connector has multiple protruding ridges along the front-to-back direction on its outer side wall, and these ridges are spaced apart around the circumference of the connector.

6. A high-pressure threaded connector according to claim 1, characterized in that: A sealing ring is provided at the bottom of the threaded hole.

7. A high-pressure threaded connector according to claim 1, characterized in that: It also includes a connecting pipe, which is threadedly connected to a threaded hole. The inner diameter of the connecting pipe is equal to the outer diameter of the inner pipe. The inner wall of the connecting pipe is provided with a positioning groove corresponding to the positioning part. When the connecting pipe is just tightened with the threaded hole, the positioning part just enters the positioning groove.

8. A high-pressure threaded connector according to claim 7, characterized in that: The sidewall of the positioning groove is chamfered.

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