A joint connection structure

Abstract

The utility model provides a joint connecting structure belongs to joint connecting technical field. It has solved the problem of inconvenient dismounting of the prior art joint connecting structure. The joint connecting structure, including plug and sleeve, plug is inserted in the sleeve, still include the connecting piece of E shape flake, the length of the protruding in the middle of connecting piece is shorter than the length of the protruding of connecting piece both sides, the outer circumferential surface of sleeve is equipped with the slot of the through sleeve inner hole wall, connecting piece is inserted in the slot, and the three protrusions of connecting piece all form axial location with plug, the both sides groove wall of slot has several connecting columns, at least two connecting columns are located between the protruding in the middle of connecting piece and the protruding of connecting piece both sides respectively, is provided with the dismounting hole on connecting piece, the dismounting hole is located in the junction of the trunk of connecting piece and the protruding in the middle of connecting piece, is provided with the recess on the groove wall of at least one side of slot, the position of recess is corresponding with the dismounting hole. The joint connecting structure can make the joint convenient and stable.

Description

Technical Field

[0001] This utility model belongs to the field of connector connection technology and relates to a connector connection structure. Background Technology

[0002] A safety valve is a valve whose opening and closing element is normally closed. When the pressure of the medium in the equipment or pipeline rises above a specified value, it discharges the medium to the outside of the system to prevent the pressure of the medium in the pipeline or equipment from exceeding the specified value. Installing safety valves in pipelines can prevent overpressure in the pipeline system and improve the safety of the pipeline system.

[0003] Currently, safety valves in piping systems typically use threaded connections. A connector is usually installed on the connecting pipe, and the inlet end of the safety valve is inserted into the connector to form a threaded connection. For example, a safety valve disclosed in Chinese patent literature [Application No.: CN201821471501.8; Publication No.: CN208651757U] has a safety valve, an exhaust valve, and a pressure gauge connected sequentially to the connecting pipe. The inlet end of the safety valve is inserted and threaded into the connector on the connecting pipe, and the outlet end of the safety valve is perpendicular to the inlet end. Although the safety valve can be stably fixed to the connector on the connecting pipe by tightening, the threaded fit requires several rotations. Since the safety valve and the exhaust valve are located adjacent to each other, the outlet end of the safety valve may interfere with the exhaust valve during rotation, making installation and operation inconvenient.

[0004] To avoid the inconvenience caused by threaded connections, safety valves are sometimes fixedly connected using snap rings. For example, a combination valve disclosed in Chinese patent literature [Application No.: CN 201420623250.6; Publication No.: CN204176033U] is provided with a snap ring between the inlet end of the safety valve and the connector. An annular groove one is opened on the hole wall of the connector, and an annular groove two is opened on the outer circumferential surface of the inlet end of the safety valve. The snap ring is embedded in annular groove one and annular groove two. When installing the retaining ring, first embed the retaining ring into the second annular groove. Then, use your fingers or tweezers to press the retaining ring radially inward, compressing it completely into the second annular groove. Next, insert the inlet end of the safety valve into the connector. When fully inserted, the retaining ring resets, with its outer side embedded in the first annular groove. During insertion, the retaining ring must be pressed down continuously. However, when the retaining ring is close to the end face of the connector, the pressing space is minimized, making it difficult to press down. If it loosens, the retaining ring will eject radially, preventing it from entering the connector. Therefore, the retaining ring installation is inconvenient. Although this retaining ring connection eliminates the need for several rotations, installation remains inconvenient. Furthermore, once installed, the retaining ring cannot be removed. If the safety valve exceeds its service life or malfunctions, it cannot be replaced. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing a connector connection structure that solves the technical problem of how to make the connector easy to assemble and disassemble while ensuring a stable connection.

[0006] The objective of this utility model can be achieved through the following technical solutions: A connector connection structure includes a plug and a sleeve, wherein the plug is inserted into the sleeve. The structure is characterized by further including an E-shaped connector, wherein the length of the central protrusion of the connector is shorter than the length of the two side protrusions of the connector. A slot penetrating the inner wall of the sleeve is formed on the outer circumferential surface of the sleeve. The connector is inserted into the slot, and the three protrusions of the connector axially limit the plug. Several connecting posts are provided between the two side walls of the slot, with at least two connecting posts located between the central protrusion and the two side protrusions of the connector. A disassembly hole is provided on the connector, located at the connection between the main body of the connector and the central protrusion. A notch is provided on at least one side wall of the slot, the position of which corresponds to the disassembly hole.

[0007] Taking a safety valve as an example, the safety valve has a plug that can be inserted into the sleeve. When connecting the safety valve, insert the plug into the sleeve, then align the three protrusions of the connector with the slot opening, and insert the connector into the slot. Two connecting posts are located between the middle protrusion and the two side protrusions of the connector, respectively. The three protrusions and the plug form an axial limit, thus connecting the safety valve to the connector. The connecting posts ensure the stability of the sleeve slot structure. The disassembly hole is located at the connection between the main body of the connector and the middle protrusion, reducing the impact of the disassembly hole on the structural stability of the connector, thus maintaining the stability of the connector structure. The three protrusions all form axial limits with the plug, meaning there are three axial limit positions, thus ensuring a stable connector connection. The middle protrusion of the connector provides the location for the disassembly hole and simultaneously forms a third limit position to ensure a stable connector connection, serving a dual purpose. During the connection process between this connector and the mating part, simply align the connector with the slot opening and insert it; unlike a snap ring, it does not require constant radial compression, making installation and operation convenient.

[0008] When the safety valve needs to be removed, insert a disassembly tool such as a pry bar or screwdriver into the disassembly hole through the notch, pry the connector outwards and then pull it out. Then, remove the plug from the sleeve. Installation requires only two insertion actions, avoiding interference with adjacent components caused by rotating the safety valve. It also avoids the need for constant radial compression when installing a retaining ring, making the connection easier. The disassembly hole provides a point of leverage for easy removal of the connector. Furthermore, the disassembly hole entering the slot reduces the possibility of accidental disassembly, ensuring a reliable connection between the connector and the mating parts. The notch provides clearance, allowing the pry bar or screwdriver to be inserted into the disassembly hole for easy removal of the connector. It also allows for easy inspection of the correspondence between the notch and the disassembly hole to determine if the connector is properly installed, further facilitating installation. Therefore, this connector connection structure ensures easy assembly and disassembly and a stable connection.

[0009] In the above-described connector structure, the side of the recess opposite to the connector is a guide surface, which is inclined outwards. A pry bar or screwdriver can be easily inserted into the disassembly hole using the guiding effect of the guide surface, making disassembly of the connector convenient.

[0010] In the above-mentioned connector connection structure, a limiting groove and a shoulder are provided on the outer peripheral surface of the plug. The limiting groove is opposite to the slot, the shoulder abuts against the end face of the sleeve, and the three protrusions of the connector are all embedded in the limiting groove.

[0011] During installation, insert the plug into the sleeve, with the shoulder abutting against the end face of the sleeve. The limiting groove and slot should be aligned. Then, insert the three protrusions of the connector into the slot, and these protrusions should be embedded in the limiting groove to axially limit the plug. The shoulder abutting against the end face of the sleeve creates axial limitation, aligning the plug with the limiting groove. This facilitates the insertion of the three protrusions from the slot into the limiting groove, making the connector connection structure easy to install.

[0012] In the above-described connector connection structure, the inner circumferential surface of the sleeve has a retaining ring, and the outer circumferential surface of the plug has a convex ring. The convex ring is located inside the sleeve, and the convex ring is axially limited between the retaining ring and the connector.

[0013] During installation, insert the plug into the sleeve, with the plug abutting against the retaining ring. Then, insert the three protrusions of the connector into the slot, and the three protrusions of the connector block the outer side of the convex ring to form an axial limit, making the joint connection structure easy to install.

[0014] In the aforementioned connector connection structure, the outer circumferential surface of the plug is cylindrical. The inner surfaces of the two protruding sides of the connector and the end face of the protruding center of the connector are all provided with arc-shaped limiting surfaces. All limiting surfaces are located on the same circumference and match the outer circumferential surface of the plug. When the connector and plug form an axial limiting relationship, the plug can also rotate to adjust the circumferential position of the safety valve, facilitating the adjustment of the outlet direction of the safety valve.

[0015] In the above-described connector connection structure, the slot penetrates the sleeve radially, and recesses are provided at both ends of the slot. This allows the connector to be connected to the sleeve via both ends of the slot, facilitating easy connection.

[0016] In the aforementioned connector connection structure, a first chamfer and a second chamfer are respectively provided between the protruding end faces on both sides of the connector and its inner surface. The first and second chamfers serve a guiding function, facilitating the insertion of the connector into place and making the connector structure easy to connect.

[0017] In the above-described connector connection structure, a protruding assembly ring is provided on the outer circumferential surface of one end of the sleeve, and the slot of the slot is located on the outer circumferential surface of the assembly ring. The assembly ring increases the structural strength of the sleeve and reduces the impact of the slot on the structural stability of the sleeve, thus making the connector connection structure stable.

[0018] In the above-described connector structure, the outer circumferential surface of the assembly ring is an octagonal prism. This stabilizes the sleeve structure, thereby ensuring a stable connector connection.

[0019] In the above-described connector connection structure, a sealing ring is provided between the plug and the sleeve, and the sealing ring is fixed to the plug. The sealing ring ensures a seal at the connection between the plug and the sleeve.

[0020] Compared with the prior art, the present invention has the following advantages: The connector is E-shaped, with the length of the central protrusion shorter than the length of the two side protrusions. A slot is provided on the outer circumference of the sleeve, and the connector is inserted into the slot. The three protrusions of the connector form an axial limit with the plug. There are several connecting posts between the two side walls of the slot, with at least two connecting posts located between the central protrusion and the two side protrusions of the connector. The connector is provided with a disassembly hole located at the connection between the main body of the connector and the central protrusion of the connector. At least one side wall of the slot is provided with a notch, the position of which corresponds to the disassembly hole, so that the connector is easy to disassemble and assemble and the connection is stable. Attached Figure Description

[0021] Figure 1 This is a perspective view of Embodiment 1 of the connector connection structure.

[0022] Figure 2This is a cross-sectional view of Embodiment 1 of the connector connection structure.

[0023] Figure 3 yes Figure 2 A cross-sectional view along the AA direction.

[0024] Figure 4 This is a perspective view of the tube sleeve and connector when they are disassembled in Embodiment 1.

[0025] Figure 5 This is a cross-sectional view of Embodiment 2 of the connector connection structure.

[0026] In the diagram, 1. Plug; 1a. Limiting groove; 1b. Shoulder; 1c. Raised ring; 2. Sleeve; 2a. Slot; 2a1. Connecting post; 2b. Notch; 2b1. Guide surface; 2c. Assembly ring; 2d. Retaining ring; 3. Connector; 3a. Main body; 3b. Protrusion; 3c. Disassembly hole; 3d. Limiting surface; 3e. First chamfer; 3f. Second chamfer; 4. Sealing ring; 5. Safety valve. Detailed Implementation

[0027] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0028] Example 1

[0029] like Figure 1 As shown, a connector connection structure includes a sleeve 2 and a plug 1 that fit together, with a connector 3 connecting the sleeve 2 and the plug 1. One end of the sleeve 2 has a protruding assembly ring 2c on its outer circumferential surface, and the outer circumferential surface of the assembly ring 2c is an octagonal prism. A slot 2a is formed on the outer circumferential surface of the assembly ring 2c, into which the connector 3 is inserted. Taking a safety valve 5 with a plug 1 as an example, the safety valve 5 is equipped with a plug 1 that can be inserted into the sleeve 2. The plug 1 can also be located on a pipe fitting or other component.

[0030] like Figure 2 and Figure 3As shown, a ring-shaped limiting groove 1a is formed on the outer peripheral surface of the plug 1. The connector 3 is E-shaped and includes a main body 3a and three protrusions 3b connected to the main body 3a. The length of the middle protrusion 3b of the connector 3 is shorter than the length of the two side protrusions 3b. The main body 3a of the connector 3 is located in the slot 2a, and the three protrusions 3b of the connector 3 form an axial limit with the plug 1. The connector 3 is provided with a disassembly hole 3c, which is located at the connection between the main body 3a of the connector 3 and the middle protrusion 3b of the connector 3. The slot 2a not only penetrates the inner wall of the sleeve 2, but also completely penetrates the sleeve 2. The slot 2a has two slots on the outer peripheral surface of the sleeve 2. The connector 3 can be fully inserted into the sleeve 2, and the disassembly hole 3c is also located in the slot 2a, which can prevent the connector 3 from protruding outward and being accidentally pulled out, thus improving the reliability of the safety valve 5 connection on the connector. A notch 2b is provided on at least one side wall of the slot 2a, and the position of the notch 2b corresponds to the disassembly hole 3c. Notches 2b are provided at both ends of the slot 2a. The side of the notch 2b opposite to the connector 3 is a guide surface 2b1, which is inclined outwards. The outer peripheral surface of the plug 1 is cylindrical. The inner surfaces of the two side protrusions 3b of the connector 3 and the end face of the middle protrusion 3b of the connector 3 are all provided with arc-shaped limiting surfaces 3d, all of which are located on the same circumference and match the outer peripheral surface of the plug 1. A first chamfer 3e and a second chamfer 3f are respectively provided between the end face and the inner surface of the two side protrusions 3b of the connector 3. Several connecting posts 2a1 are provided between the two opposite side walls of the slot 2a, with two connecting posts 2a1 located between the middle protrusion 3b of the connector 3 and the two side protrusions 3b of the connector 3, respectively. The outer circumference of the plug 1 is also provided with a shoulder 1b that abuts against the end face of the sleeve 2. When the plug 1 is inserted into the sleeve 2 and the shoulder 1b abuts against the end face of the sleeve 2, the limiting groove 1a is opposite to the slot 2a. When the connector 3 is inserted into the slot 2a, all three protrusions 3b of the connector 3 are embedded in the limiting groove 1a. A sealing ring 4 is fixed on the plug 1. When the plug 1 is inserted into the sleeve 2, the sealing ring 4 and the sleeve form a seal.

[0031] like Figure 1 and Figure 2 As shown, when connecting the safety valve 5, insert the plug 1 into the sleeve 2, with the shoulder 1b abutting against the end face of the sleeve 2 so that the limiting groove 1a and the slot 2a are aligned. Then, insert the connector 3 into the slot 2a, as shown. Figure 3 As shown, the three protrusions 3b of the connector 3 are all embedded in the limiting groove 1a, thus connecting the safety valve 5 to the connector. The three protrusions 3b of the connector 3 form three limiting points, ensuring a stable connection of the safety valve 5. Figure 4As shown, when it is necessary to remove the safety valve 5, insert a disassembly tool such as a pry bar or screwdriver into the disassembly hole 3c, pry the connector 3 outwards and then pull it out. Then, pull the plug 1 out of the sleeve 2. Installation requires only two insertion actions, making the connection easy. The disassembly hole 3c provides a point of leverage for removing the connector 3, making it easy to remove. Therefore, this connector connection structure allows for easy assembly and disassembly while ensuring a stable connection.

[0032] Example 2

[0033] like Figure 5 As shown, the inner circumferential surface of the sleeve 2 has a retaining ring 2d, and the outer circumferential surface of the plug 1 has a protruding ring 1c. The protruding ring 1c is located inside the sleeve 2, and its axial direction is limited between the retaining ring 2d and the connector 3. A sealing ring 4 is fixed on the outer circumferential surface of the protruding ring 1c, and the sealing ring 4 forms a seal with the inner circumferential surface of the sleeve 2. Other structures are basically the same as in Embodiment 1.

[0034] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A connector connection structure, comprising a plug (1) and a sleeve (2), wherein the plug (1) is inserted into the sleeve (2), characterized in that, It also includes an E-shaped connector (3), the length of the middle protrusion (3b) of the connector (3) is shorter than the length of the two side protrusions (3b) of the connector (3), a slot (2a) penetrating the inner wall of the sleeve (2) is provided on the outer circumferential surface of the sleeve (2), the connector (3) is inserted into the slot (2a), and the three protrusions (3b) of the connector (3) form an axial limit with the plug (1), and there are several connecting posts (2a1) between the two side walls of the slot (2a). At least two connecting posts (2a1) are located between the middle protrusion (3b) and the two side protrusions (3b) of the connector (3), respectively. The connector (3) is provided with a disassembly hole (3c), which is located at the connection between the main body (3a) of the connector (3) and the middle protrusion (3b) of the connector (3). At least one side of the slot (2a) is provided with a notch (2b), which is positioned corresponding to the disassembly hole (3c).

2. The connector connection structure according to claim 1, characterized in that, The side of the notch (2b) opposite to the connector (3) is a guide surface (2b1), which is inclined outward.

3. The connector connection structure according to claim 1, characterized in that, The plug (1) has a limiting groove (1a) and a shoulder (1b) on its outer peripheral surface. The limiting groove (1a) is opposite to the slot (2a). The shoulder (1b) abuts against the end face of the sleeve (2). The three protrusions (3b) of the connector (3) are all embedded in the limiting groove (1a).

4. The connector connection structure according to claim 1, characterized in that, The inner circumferential surface of the sleeve (2) has a retaining ring (2d), and the outer circumferential surface of the plug (1) has a convex ring (1c). The convex ring (1c) is located inside the sleeve (2), and the convex ring (1c) is axially limited between the retaining ring (2d) and the connector (3).

5. The connector connection structure according to any one of claims 1-4, characterized in that, The outer peripheral surface of the plug (1) is a cylindrical surface. The inner surfaces of the two protrusions (3b) on both sides of the connector (3) and the end face of the middle protrusion (3b) of the connector (3) are all provided with arc-shaped limiting surfaces (3d). All limiting surfaces (3d) are arranged on the same circumference and match the outer peripheral surface of the plug (1).

6. The connector connection structure according to any one of claims 1-4, characterized in that, The slot (2a) penetrates the sleeve (2) radially, and the notch (2b) is provided at both ends of the slot (2a).

7. The connector connection structure according to any one of claims 1-4, characterized in that, The connector (3) has a first chamfer (3e) and a second chamfer (3f) between the end face of the protrusion (3b) on both sides and the inner side.

8. The connector connection structure according to any one of claims 1-4, characterized in that, The outer peripheral surface of one end of the sleeve (2) has a protruding assembly ring (2c), and the slot of the slot (2a) is set on the outer peripheral surface of the assembly ring (2c).

9. The connector connection structure according to claim 8, characterized in that, The outer circumferential surface of the assembly ring (2c) is an octagonal prism.

10. The joint connection structure according to any one of claims 1-4, characterized in that, A sealing ring (4) is provided between the plug (1) and the sleeve (2), and the sealing ring (4) is fixed on the plug (1).

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