Plug structure of blind plug connector

Abstract

The utility model provides a plug structure of a blind-plug connector, belongs to the technical field of blind-plug connectors, and solves the problems that in the prior art, a plug cannot be subjected to deflection adjustment, and when a female connector is in an inclined state, the plug cannot be smoothly inserted into the female connector. The plug comprises a plug shell, a step cavity is formed in the plug shell, a hollow insertion rod is movably arranged in the step cavity, an annular limiting protrusion is arranged on the hollow insertion rod, the plug shell is connected with a baffle ring, the hollow insertion rod is sleeved with a sealing piece in a sealed mode, the sealing piece abuts against the inner wall of the plug shell, and a first spring abuts against the hollow insertion rod is arranged in the step cavity. The hollow inserting rod can move in the radial direction and can also deflect and swing in the step cavity, so that the hollow inserting rod can adapt to the inserting operation that the axes of the female connector and the male connector are not parallel or parallel; the sealing piece can prevent leakage of fluid in the adjusting process of the hollow inserting rod, the first spring can reset the pulled-out hollow inserting rod, and use of the next time is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of blind-fit connector technology, specifically to a plug structure for a blind-fit connector. Background Technology

[0002] Blind-mating connectors are special connectors that enable quick and reliable connections without precise alignment. They are widely used in scenarios where space is limited, operation is inconvenient, or high-frequency plugging and unplugging is required.

[0003] A blind-mating connector mainly consists of a plug and a socket. After the plug is inserted into the socket, it automatically opens the valve core, thus enabling fluid flow. Existing plug structures include a floating blind-mating mechanism for a quick-connect connector disclosed in patent CN217003577U. This floating blind-mating mechanism includes a fixed bushing, a clamping bushing, and a second sealing ring. The fixed bushing has a mounting hole, and the male connector valve body is disposed in the mounting hole. The clamping bushing is located between the fixed bushing and the male connector valve body, with one end of the clamping bushing abutting the rear end of the male connector valve body. Radial floating gaps are maintained between the outer circumferential surface of the male connector valve body and the wall of the mounting hole, as well as between the male connector valve body and the inner circumferential surface of the clamping bushing. The second sealing ring is pressed between the rear end face of the male connector valve body and the fixed bushing. Therefore, the male connector valve body (i.e., the plug) can only slide and adjust its position radially, and cannot be deflected. When the female connector is tilted (i.e., the axes of the female and male connectors are not parallel), the male connector valve body cannot be smoothly inserted into the female connector, affecting the use of the blind-mating connector. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a plug structure for a blind-fit connector. The hollow plug rod can not only move radially within the stepped cavity but also deflect and swing, thereby adapting to insertion operations where the axes of the female and male connectors are not parallel or are parallel. The sealing element prevents fluid leakage during the adjustment of the hollow plug rod, while the first spring can reset the pulled-out hollow plug rod for convenient use next time.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A plug structure for a blind-fit connector includes a plug housing with a stepped cavity. A hollow plug rod is movably disposed in the stepped cavity. An annular limiting protrusion is provided on the hollow plug rod. A retaining ring is connected to the plug housing to cooperate with the annular limiting protrusion to restrict the hollow plug rod from moving out of the stepped cavity. A sealing element that abuts against the inner wall of the plug housing is provided on the hollow plug rod. A first spring that abuts against the hollow plug rod is provided in the stepped cavity.

[0007] Preferably, a reinforcing member is provided at the end of the sealing member away from the hollow insert.

[0008] Preferably, the annular limiting protrusion has an annular groove for fitting the sealing element.

[0009] Preferably, the retaining ring is threaded and / or welded to the plug housing.

[0010] Preferably, the first spring is a conical spring, with the small-diameter end of the conical spring sleeved on the hollow insert rod and abutting against the annular limiting protrusion.

[0011] Preferably, a valve core is movably sealed at one end of the hollow insert rod, and a backstop ring is provided at the other end of the hollow insert rod. A second spring abuts between the valve core and the backstop ring.

[0012] Preferably, one end of the plug housing is provided with threads and a sealing ring fitted on the plug housing.

[0013] Preferably, the plug housing has several snap-fit ​​surfaces evenly arranged circumferentially.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0015] The hollow insert can not only move radially within the stepped cavity, but also deflect and swing, thus adapting to insertion operations where the axes of the female and male connectors are not parallel or parallel. The seal prevents fluid leakage during the adjustment of the hollow insert, while the first spring resets the pulled-out hollow insert for easy reuse. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A three-dimensional structural schematic diagram provided for an embodiment of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram provided for an embodiment of the present utility model.

[0019] Reference numerals: 1-Plug housing; 2-Snap-fit ​​surface; 3-Sealing ring; 4-Hollow insert; 5-Valve core; 6-Second spring; 7-Annular limiting protrusion; 8-Reinforcing member; 9-Sealing member; 10-Anti-reverse ring; 11-First spring; 12-Annular groove; 13-Retaining ring; 14-Stepped cavity. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] The following is combined Figure 1 and Figure 2 This utility model will be described in detail.

[0024] Example

[0025] A plug structure for a blind-mating connector includes a plug housing 1, a stepped cavity 14 within the plug housing 1, a hollow plug rod 4 movably disposed within the stepped cavity 14, an annular limiting protrusion 7 on the hollow plug rod 4, a retaining ring 13 connected to the plug housing 1 that cooperates with the annular limiting protrusion 7 to restrict the hollow plug rod 4 from moving out of the stepped cavity 14, a sealing element 9 sealingly fitted on the hollow plug rod 4 and abutting against the inner wall of the plug housing 1, and a first spring 11 disposed within the stepped cavity 14 and abutting against the hollow plug rod 4. A certain gap is maintained between the retaining ring 13 and the outer wall of the hollow plug rod 4, thereby ensuring that the hollow plug rod 4 can swing at a certain angle or move radially a certain distance.

[0026] like Figure 2As shown, a retaining ring 13 is connected to the plug housing 1. The retaining ring 13 cooperates with the annular limiting protrusion 7 to restrict the hollow plug rod 4 from moving out of the stepped cavity 14. Therefore, the hollow plug rod 4 can swing and move radially freely in the stepped cavity 14, which facilitates the insertion operation. The sealing element 9 on the hollow plug rod 4 keeps the gap between the annular limiting protrusion 7 and the retaining ring 13 sealed, and the gap between the plug housing 1 and the retaining ring 13 sealed, to prevent fluid leakage. After the hollow plug rod 4 is pulled out, since the sealing element 9 is mainly made of elastic rubber, the sealing element 9 can cooperate with the first spring 11 to reset the hollow plug rod 4, ensuring the next use.

[0027] A reinforcing member 8 is provided inside the end of the seal 9 away from the hollow plug 4. The reinforcing member 8 can be made of iron or other rigid materials to ensure the structural strength of the seal 9 near the plug housing 1. Figure 2 As shown, one end of the reinforcing member 8 abuts against the end face of the retaining ring 13, and the other end of the reinforcing member 8 abuts against the inner wall of the stepped cavity 14 of the plug housing 1, thereby ensuring that the end of the sealing member 9 away from the hollow plug rod 4 is fixed and stationary, while the end of the sealing member 9 close to the hollow plug rod 4 can deform with the swing or sliding of the hollow plug rod 4 to maintain a tight seal; at the same time, the reinforcing member 8 can also assist the retaining ring 13 in being installed in place during the installation process, preventing the retaining ring 13 from going too deep into the stepped cavity 14.

[0028] The annular limiting protrusion 7 has an annular groove 12 for fitting the sealing element 9. The annular groove 12 can engage and place the sealing element 9, thereby limiting the possible slippage of the sealing element 9 on the hollow insert rod 4, and at the same time allowing the sealing element 9 to deflect as the hollow insert rod 4 deflects.

[0029] The retaining ring 13 is threaded and / or welded to the plug housing 1. When the retaining ring 13 is threaded to the plug housing 1, it can be installed quickly. When the retaining ring 13 is welded to the plug housing 1, it can ensure a stable connection between the retaining ring 13 and the plug housing 1. However, the retaining ring 13 needs to be pressed during installation to press the retaining ring 13 against the sealing element 9. When the retaining ring 13 is threaded to the plug housing 1 first and then welded, the operation of pressing the retaining ring 13 can be eliminated, making the welding operation more convenient.

[0030] The first spring 11 is a conical spring. The small-diameter end of the conical spring is sleeved on the hollow insert rod 4 and abuts against the annular limiting protrusion 7. The conical spring can better provide the restoring force after the hollow insert rod 4 deflects. That is, the small-diameter end of the conical spring is sleeved on the hollow insert rod 4, and the large-diameter end of the conical spring is engaged in the stepped cavity 14, ensuring that the conical spring will not slip and ensuring that the conical spring can undergo elastic deformation when the hollow insert rod 4 deflects or slides radially.

[0031] A valve core 5 is movably sealed at one end of the hollow plug rod 4, and a check ring 10 is installed at the other end. A second spring 6 abuts against the valve core 5 and the check ring 10. A conical cavity is provided within the hollow plug rod 4. In its initial state, the valve core 5 is located at the small-diameter end of the conical cavity, and the plug housing 1 is hollow. After the hollow plug rod 4 is inserted into the corresponding socket (i.e., the female connector), the valve core 5 abuts against the valve core in the socket, compressing the second spring 6. The valve core 5 moves to the large-diameter end of the conical cavity, thereby opening the fluid passage. The check ring 10 is installed into the hollow plug rod 4 via a snap-fit ​​or threaded connection.

[0032] like Figure 1 As shown, one end of the plug housing 1 is provided with threads and a sealing ring 3 fitted onto the plug housing 1. The plug housing 1 can be connected to the corresponding pipe through the threads, and the sealing ring 3 can ensure the sealing of the connection between the plug housing 1 and the pipe.

[0033] The plug housing 1 has several snap-fit ​​surfaces 2 evenly arranged around its circumference. The snap-fit ​​surfaces 2 can be easily engaged with a wrench or other tools to rotate the plug housing 1, thereby installing the plug housing 1 onto the pipe.

[0034] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A plug structure for a blind-mating connector, comprising a plug housing (1), characterized in that, The plug housing (1) is provided with a stepped cavity (14), and a hollow plug rod (4) is movably disposed in the stepped cavity (14). An annular limiting protrusion (7) is provided on the hollow plug rod (4). The plug housing (1) is connected with a retaining ring (13) that cooperates with the annular limiting protrusion (7) to restrict the hollow plug rod (4) from moving out of the stepped cavity (14). A sealing element (9) that abuts against the inner wall of the plug housing (1) is provided on the hollow plug rod (4). A first spring (11) that abuts against the hollow plug rod (4) is provided in the stepped cavity (14).

2. The plug structure of the blind-mating connector according to claim 1, characterized in that, A reinforcing member (8) is provided at the end of the sealing member (9) away from the hollow insert (4).

3. The plug structure of the blind-mating connector according to claim 1, characterized in that, The annular limiting protrusion (7) is provided with an annular groove (12) for fitting the sealing element (9).

4. The plug structure of the blind-mating connector according to claim 1, characterized in that, The retaining ring (13) is threaded and / or welded to the plug housing (1).

5. The plug structure of the blind-mating connector according to claim 1, characterized in that, The first spring (11) is a conical spring, and the small diameter end of the conical spring is sleeved on the hollow insert (4) and abuts against the annular limiting protrusion (7).

6. The plug structure of the blind-mating connector according to claim 1, characterized in that, A valve core (5) is provided in a movable seal at one end of the hollow insert (4), and a backstop ring (10) is provided at the other end of the hollow insert (4). A second spring (6) abuts between the valve core (5) and the backstop ring (10).

7. The plug structure of the blind-mating connector according to claim 1, characterized in that, One end of the plug housing (1) is provided with threads and a sealing ring (3) fitted on the plug housing (1).

8. The plug structure of the blind-mating connector according to claim 1, characterized in that, The plug housing (1) has several snap-fit ​​surfaces (2) evenly arranged along the circumference.

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