Quick connector

Abstract

The utility model provides a quick connector which comprises a shell seat, a circulation channel is arranged on the shell seat, a shell is installed on the shell seat, a cavity is arranged in the shell, the cavity is communicated with the circulation channel, a through hole is formed in the end, away from the shell seat, of the shell, the through hole is communicated with the cavity, and the through hole is communicated with the cavity. A flexible blocking piece is arranged in the cavity, a counter bore is formed in the position, close to the shell, of the flexible blocking piece, the counter bore is communicated with the circulation channel, a cutting seam is formed in the end, close to the through hole, of the flexible blocking piece, the counter bore is communicated with the cutting seam, and the inner wall, close to the through hole, of the cavity is a conical cambered surface. And the flexible barrier part close to the through hole is in interference fit with the shell. The inner wall, close to the through hole, of the cavity is a conical cambered surface. The end portion of the flexible blocking piece can be extruded into the shell conveniently during installation through the conical arc face, and the shell has certain extrusion force on the end portion of the flexible blocking piece so that the sealing performance of the cutting seam can be improved when the cutting seam is closed.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field especially relates to a quick connector. BACKGROUND

[0002] On an infusion line for performing infusion or blood collection, a medical connector is typically provided, which is capable of connecting a male connector, such as a luer tip of a syringe tip, to perform a mixed injection of a medicinal liquid or to perform collection of a biological fluid using the infusion line.

[0003] The split septum medical connector is provided with a disc-shaped valve element at an opening portion, and by directly inserting a tip of a male connector into a slit of the valve element to press and open the slit, communication between the infusion line and the inside of the male connector can be achieved.

[0004] The current medical connector has poor sealing performance, and when the liquid in the channel has a certain pressure, the problem of liquid leakage is prone to occur. INNOVATION CONTENT

[0005] In order to solve the above technical problems, the utility model provides a quick connector, which has the characteristics of good sealing performance.

[0006] The specific scheme is as follows: a quick connector, comprising a shell seat, a flow-through channel is arranged on the shell seat, a shell body is installed on the shell seat, a cavity is arranged in the shell body, the cavity is communicated with the flow-through channel, a through hole is arranged on the shell body away from the shell seat, the through hole is communicated with the cavity, a flexible blocking piece is arranged in the cavity, a counterbore is arranged on the flexible blocking piece close to the shell body, the counterbore is communicated with the flow-through channel, a cutting seam is arranged on the flexible blocking piece close to the through hole, the counterbore is communicated with the cutting seam, the inner wall of the cavity close to the through hole is a conical arc surface, and the flexible blocking piece close to the through hole is in interference fit with the shell body.

[0007] Preferably, the taper of the conical arc surface is 1°-3°.

[0008] Preferably, the taper of the conical arc surface is 1.62°-1.82°.

[0009] Preferably, the flexible blocking piece is a silica gel blocking piece.

[0010] Preferably, a sealing protection cap is detachably installed on the shell body close to the through hole.

[0011] Preferably, the shell body and the sealing protection cap are connected through threads.

[0012] Preferably, the thickness of the flexible blocking piece at the cutting seam is 1-3mm.

[0013] The utility model has the advantages that:

[0014] The inner wall of the cavity near the through hole is a conical arc surface. The conical arc surface facilitates the end of the flexible barrier to be pressed into the shell during installation, and the shell has a certain pressing force on the end of the flexible barrier, which can improve the sealing performance when the cutting seam is closed. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings. Among them:

[0016] Figure 1 It is a structural schematic diagram of the embodiment 1;

[0017] Figure 2 It is a front view of the embodiment 1; Figure 1

[0018] Figure 3 It is an A-A sectional view of the embodiment 1; Figure 2

[0019] Figure 4 It is an enlarged view of the shell in the embodiment 1; Figure 3

[0020] Figure 5 It is an enlarged view of the flexible barrier in the embodiment 1; Figure 3

[0021] Figure 6 It is a structural schematic diagram of the flexible barrier;

[0022] 1, shell seat, 2, shell, 21, cavity, 22, through hole, 23, conical arc surface, 3, flexible barrier, 31, counterbore, 32, cutting seam, 4, sealing protective cap. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below. In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0024] ​​​​Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0025] Example 1

[0026] like Figures 1-6 The quick connector shown includes a housing 1, a housing 2, and a flexible barrier 3. A flow channel 11 is provided on the housing 1. The housing 2 is mounted on the housing 1, and a cavity 21 is provided inside the housing 2. The cavity 21 communicates with the flow channel 11. A through hole 22 with a diameter of 15mm is provided at the end of the housing 2 away from the housing 1, and the through hole 22 communicates with the cavity 21. The flexible barrier 3 is provided inside the cavity 21; in this embodiment, the flexible barrier 3 is a silicone barrier. A countersunk hole 31 is provided near the housing 2 on the flexible barrier 3, and the countersunk hole 31 communicates with the flow channel 11. A cut slit 32 is provided at the end of the flexible barrier 3 near the through hole 22, and the thickness of the flexible barrier 3 at the cut slit 32 is 1-3mm. The countersunk hole 31 communicates with the cut slit 32. The inner wall of the cavity 21 near the through hole 22 is a tapered arc surface 23, the taper of which is 1°-3°, preferably 1.62°-1.82°. The flexible barrier 3 near the through hole 22 is interference-fitted with the shell 2.

[0027] When the joint is not connected, the flexible barrier 3 with the cut slit 32 is housed within the housing 2. The flexible barrier 3 and the housing 2 are interference-fitted, and the cut slit 32 is tightly closed under the pressure of the housing 2, preventing liquid in the flow channel 11 from flowing out of the joint. The conical arc surface 23 facilitates the insertion of the end of the flexible barrier 3 into the housing 2 during installation. The housing 2 exerts a certain compressive force on the end of the flexible barrier 3, which improves the sealing performance when the cut slit 32 is closed.

[0028] When connection is required, the connector or connecting tube is inserted into the through hole 22, and the end of the flexible barrier 3 with the cut slit 32 is squeezed and squeezed into the wider part of the cavity 21. The squeezing continues to deform the flexible barrier 3 toward the countersunk hole 31, so that the end of the flexible barrier 3 is in a stretched state, thereby opening the cut slit 32.

[0029] A sealing cap 4 is detachably mounted on the housing 2 near the through hole 22. The housing 2 and the sealing cap 4 are connected by threads. The sealing cap 4 further improves the sealing performance of the quick connector.

[0030] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A quick connector, characterized in that: The system includes a housing (1) with a flow channel (11) and a housing (2) mounted thereon. A cavity (21) is provided inside the housing (2), and the cavity (21) is connected to the flow channel (11). A through hole (22) is provided at the end of the housing (2) away from the housing (1), and the through hole (22) is connected to the cavity (21). A flexible barrier (3) is provided inside the cavity (21). The flexible barrier (3) is provided with a countersunk hole (31) near the housing (2), and the countersunk hole (31) is connected to the flow channel (11). The flexible barrier (3) is provided with a cutting slit (32) at one end near the through hole (22), and the countersunk hole (31) is connected to the cutting slit (32). The inner wall of the cavity (21) near the through hole (22) is a conical arc surface. The flexible barrier (3) near the through hole (22) is interference-fitted with the housing (2).

2. The quick connector according to claim 1, characterized in that: The taper of the conical arc surface is 1°-3°.

3. The quick connector according to claim 1, characterized in that: The taper of the conical arc surface is 1.62°-1.82°.

4. The quick connector according to claim 1, characterized in that: The flexible barrier (3) is a silicone barrier.

5. A quick connector according to claim 1, characterized in that: A sealing cap (4) is detachably installed on the housing (2) near the through hole (22).

6. A quick connector according to claim 5, characterized in that: The housing (2) and the sealing cap (4) are connected by threads.

7. A quick connector according to claim 1, characterized in that: The thickness of the flexible barrier (3) at the cut seam (32) is 1-3 mm.

8. A quick connector according to claim 1, characterized in that: The diameter of the through hole (22) is 15 mm.

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