Quick-plug connector with air release valve and inflation system of quick-plug connector

Abstract

The utility model discloses a quick plug connector with an air release valve and an inflation system of the quick plug connector. The quick plug connector comprises a connector assembly, an elastic buckle and the air release valve. The connector assembly is provided with a quick-plug sealing interface, a fixed end interface and a mounting cavity; the quick-plug sealing interface is used for being in butt joint with the terminal to be inflated; the fixed end interface is used for firmly butting the air pressure output end; one end of the elastic buckle is installed on the connector assembly, and the other end of the elastic buckle is used for being connected to a thread or a bayonet of a terminal to be inflated in a clamped mode. The air release valve is mounted on the mounting cavity, and when the to-be-inflated terminal has inflation overpressure, the air release valve is pressed to release overpressure gas of the to-be-inflated terminal. The quick-plug connector has the characteristics of simplicity in operation, stability, reliability, good hand touch feeling and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of inflation connectors, and particularly relates to a quick plug - and - unplug connector with a deflation valve and an inflation system thereof. Background Art

[0002] An inflation system refers to a system that fills compressed gas into gas terminals such as tires, air cushions, balls, etc. through an inflation device to provide the required pressure or gas volume. In an inflation system, pipe connectors are commonly used to connect the air pressure output end and the terminal to be inflated.

[0003] Common connection methods of pipe connectors include threaded connection, press - in connection, etc. In the threaded connection method, since the connection operation is slow and it is easy to leak air when disassembling under full air pressure, the air pressure or gas volume of the gas terminal does not meet the requirements. In the press - in connection method, due to the limitation of the press - in structure by the structural form, it is not suitable for high - pressure inflation connection, which limits its application range. In addition, most pipe connectors are not equipped with a pressure - relief structure. When the inflation terminal is in an over - inflated state, it is impossible to quickly relieve the pressure and release the gas, affecting the product experience. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, one of the purposes of the present utility model is to provide a quick plug - and - unplug connector with a deflation valve to solve the above - mentioned traditional problems.

[0005] Another purpose of the present utility model is to provide an inflation system using the quick plug - and - unplug connector with a deflation valve.

[0006] One of the purposes of the present utility model is achieved by the following technical solutions:

[0007] A quick plug - and - unplug connector with a deflation valve is used to connect an air pressure output end and a terminal to be inflated. The quick plug - and - unplug connector includes a connector assembly, a snap - fastener, and a deflation valve. The connector assembly is provided with a quick plug - and - unplug sealing interface, a fixed - end interface, and an installation cavity. The quick plug - and - unplug sealing interface is used to dock with the terminal to be inflated. The fixed - end interface is used to firmly dock with the air pressure output end. One end of the snap - fastener is installed on the connector assembly, and the other end of the snap - fastener is used to snap onto the thread or bayonet of the terminal to be inflated. The deflation valve is installed on the installation cavity. When the terminal to be inflated has over - inflated pressure, press the deflation valve to release the over - pressure gas of the terminal to be inflated.

[0008] Preferably, the connector assembly includes a connector body, an external air nozzle guide member provided at one end of the connector body, an air pipe retaining cover and a locking spring provided at the other end of the connector body. The external air nozzle guide member and the connector body form the quick plug - and - unplug sealing interface, and the air pipe retaining cover, the connector body, and the locking spring form the fixed - end interface.

[0009] Preferably, the joint body has a gas flow cavity. One end of the joint body is snap-connected to the external nozzle guide. The end of the joint body is provided with a nozzle fixing member and a nozzle sealing ring. The opposite sides of the nozzle fixing member are provided with air holes communicating with the gas flow cavity. The nozzle sealing ring cooperates with the nozzle fixing member and the external nozzle guide to perform an interference docking with the terminal to be inflated.

[0010] Preferably, the external nozzle guide is provided with a snap-fit cavity, and the joint body is provided with a snap-fit block, and the snap-fit block is snap-connected to the snap-fit cavity.

[0011] Preferably, the external nozzle guide is further provided with a first connection cavity and a second connection cavity. The joint body is provided with a first connection block and a second connection block. The first connection block is accommodated in the first connection cavity, and the second connection block is accommodated in the second connection cavity.

[0012] Preferably, the joint body is further provided with a snap-fit portion for snap-fitting the fixed end of the snap button, and the external nozzle guide is further provided with a movable cavity for inserting and mating the movable end of the snap button.

[0013] Preferably, the fixed end is provided with a U-shaped bayonet, and the movable end is provided with a U-shaped groove.

[0014] Preferably, the other end of the joint body is provided with a connecting pipe having an inverted thread. The trachea retaining cap is sleeved on the connecting pipe, and the locking spring is sleeved between the trachea retaining cap and the connecting pipe.

[0015] Preferably, the air release valve includes an air release valve core, an air release valve seat, an air release valve port sealing ring, an air release valve button, and a pressure spring. The air release valve core is provided with a plurality of air release ports. The air release valve seat is provided with a plurality of air release grooves. There is an air release gap between the air release valve button and the air release valve seat.

[0016] The second object of the present utility model is achieved by adopting the following technical solution:

[0017] An inflation system includes a pneumatic output end connecting trachea and a quick-disconnect coupling connecting the pneumatic output end connecting trachea. The quick-disconnect coupling is the quick-disconnect coupling with an air release valve as described above.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] The quick - plug connector of the present utility model has the characteristics of simple operation, stability and reliability, and good touch feeling. When in use, it is firmly connected to the air pressure output end through the fixed - end interface, then connected to the terminal to be inflated through the quick - plug sealing interface, and the thread or bayonet of the terminal to be inflated is clamped by the spring buckle, so that the quick - plug connector can form a quick - plug connection with the terminal to be inflated and be fixed. It can be suitable for high - pressure inflation connection, improving its application range to solve the problems of poor operability such as slow plug - in and easy air leakage of the existing inflatable pipe connectors. And by pressing the air - release valve with one key, the over - pressure gas can be released to solve the problem that when there is over - pressure in the terminal to be inflated, rapid pressure relief and gas release cannot be implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three - dimensional structure schematic diagram of the quick - plug connector of the present utility model;

[0021] Figure 2 is Figure 1 the left view of the quick - plug connector shown;

[0022] Figure 3 is Figure 1 the front view of the quick - plug connector shown;

[0023] Figure 4 is Figure 1 the top view of the quick - plug connector described;

[0024] Figure 5 is Figure 1 the structural schematic diagram of the quick - plug connector described for connecting the air pressure output end and the terminal to be inflated;

[0025] Figure 6 is Figure 5 the exploded view of the quick - plug connector shown for connecting the air pressure output end and the terminal to be inflated.

[0026] In the figure: 10, connector assembly; 11, connector body; 110, nozzle fixing part; 111, nozzle sealing ring; 112, first connecting block; 113, second connecting block; 114, clamping block; 115, connecting pipe; 12, external nozzle guiding part; 13, air - pipe cover; 14, locking spring; 20, spring buckle; 30, air - release valve; 31, air - release valve core; 32, air - release valve seat; 33, air - release valve orifice sealing ring; 34, air - release valve button; 35, pressure spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the specific embodiments of the present utility model in detail with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0028] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0029] In the description of the present utility model, it should be understood that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be intermediate elements present simultaneously. In contrast, when an element is referred to as being "directly" connected to another element, there are no intermediate elements.

[0030] Please refer to Figures 1-6 , a quick-disconnect coupling with a pressure relief valve 30 according to a preferred embodiment of the present utility model, which is used to connect a pneumatic output end and a terminal to be inflated, and to fill compressed gas to provide the required pressure or gas volume. Specifically, the quick-disconnect coupling includes a coupling assembly 10, a snap fastener 20, and a pressure relief valve 30; the coupling assembly 10 is provided with a quick-disconnect sealing interface, a fixed-end interface, and an installation cavity; the quick-disconnect sealing interface is used to dock with the terminal to be inflated; the fixed-end interface is used to firmly dock with the pneumatic output end; one end of the snap fastener 20 is installed on the coupling assembly 10, and the other end of the snap fastener 20 is used to snap onto the thread or bayonet of the terminal to be inflated; the pressure relief valve 30 is installed on the installation cavity. When the terminal to be inflated has overpressure during inflation, the pressure relief valve 30 is pressed to release the overpressure gas of the terminal to be inflated.

[0031] The above quick-disconnect coupling has the characteristics of simple operation, stable and reliable performance, and good touch feeling. When in use, it firmly connects to the pneumatic output end through the fixed-end interface, then connects to the terminal to be inflated through the quick-disconnect sealing interface, and the snap fastener 20 is used to snap onto the thread or bayonet of the terminal to be inflated, enabling the quick-disconnect coupling to form a quick-disconnect and be fixed with the terminal to be inflated, which can be suitable for high-pressure inflation connections, expanding its application range, so as to solve the problems of poor operability such as slow plugging and unplugging and easy air leakage of the existing gas charging pipe couplings, and the overpressure gas can be released by pressing the pressure relief valve 30 with one key to solve the problem that rapid pressure relief cannot be implemented when there is overpressure in the terminal to be inflated.

[0032] In this embodiment, the quick-disconnect sealing interface is in interference fit with the terminal to be inflated, so as to facilitate connection and implementation of pressure maintenance. The connection between the fixed-end interface and the air pressure output end can be a threaded connection, a firm socket connection, a snap connection or other fixed connections. After the air release valve 30 is pressed, gas is released through the air release valve 30. According to the magnitude of the pressing, the gas release amount is adjusted. When the hand is released, the quick-disconnect joint does not release gas.

[0033] In one embodiment, the joint assembly 10 includes a joint body 11, an external air nozzle guiding member 12 provided at one end of the joint body 11, an air pipe retaining cover 13 provided at the other end of the joint body 11, and a locking spring 14. The external air nozzle guiding member 12 and the joint body 11 form a quick-disconnect sealing interface, and the air pipe retaining cover 13, the joint body 11 and the locking spring 14 form a fixed-end interface. In this embodiment, the joint body 11 is generally in a linear structure. The joint body 11 has a gas flow cavity, and the gas output by the air pressure output end can flow into the terminal to be inflated through the gas flow cavity; one end of the joint body 11 is snap-connected to the external air nozzle guiding member 12. The end of the joint body 11 is provided with a nozzle fixing member 110 and a nozzle sealing ring 111. The opposite sides of the nozzle fixing member 110 are provided with air holes communicating with the gas flow cavity. The nozzle sealing ring 111 cooperates with the nozzle fixing member 110 and the external air nozzle guiding member 12 for interference fit with the terminal to be inflated. Among them, after docking, the front end of the nozzle fixing member 110 can abut against the valve in the nozzle so that it can be inflated and deflated. In some other embodiments, the external air nozzle guiding member 12 is provided with a first connection cavity, a second connection cavity and a snap connection cavity. The joint body 11 is provided with a first connection block 112, a second connection block 113 and a snap connection block 114. The first connection block 112 is received in the first connection cavity, the second connection block 113 is received in the second connection cavity, and the snap connection block 114 is snap-connected to the snap connection cavity. In other embodiments, the snap connection manner between the joint body 11 and the external air nozzle guiding member 12 can also be other forms, which will not be elaborated here.

[0034] Optionally, the joint body 11 is further provided with a snap connection portion for the fixed end of the snap button 20, and the external air nozzle guiding member 12 is further provided with a movable cavity for inserting and mating the movable end of the snap button 20, so that the snap button 20 cooperates with the joint body 11 to perform quick-disconnect connection on the thread or bayonet of the terminal to be inflated. Pressing the snap button 20 can release the thread or bayonet of the terminal to be inflated. Among them, the fixed end is provided with a U-shaped bayonet, and the movable end is provided with a U-shaped groove.

[0035] In some other embodiments, the other end of the joint body 11 is provided with a connecting pipe 115 having reverse threads. The air pipe cover 13 is sleeved on the connecting pipe 115, and the locking spring 14 is sleeved between the air pipe cover 13 and the connecting pipe 115. The three cooperate to firmly dock the air pressure output end. In other embodiments, the connection manner between the joint body 11 and the air pressure output end may also be in other forms, which will not be elaborated herein.

[0036] In this embodiment, the air release valve 30 includes an air release valve core 31, an air release valve seat 32, an air release valve port sealing ring 33, an air release valve button 34 and a pressure spring 35. The air release valve core 31 is provided with a plurality of air release ports, the air release valve seat 32 is provided with a plurality of air release grooves, there is a first air release gap between the air release valve core 31 and the air release valve seat 32, there is a second air release gap between the air release valve button 34 and the air release valve seat 32, one end of the pressure spring 35 abuts against the air release valve core 31, and the other end of the air release valve core 31 abuts against the joint assembly 10. When the air release valve button 34 is pressed, the gas is released in sequence through the air release ports, the first air release gap, the air release grooves, and the second air release gap.

[0037] In one of the embodiments, the gas terminal is a product such as a tire, an air cushion, a ball, etc., and the air pressure output end is a device such as an air pump, a compressor, etc.

[0038] In another embodiment, as Figure 5 and Figure 6 shown, the present utility model also provides an inflation system for connecting the air pressure output end and the terminal to be inflated. The inflation system includes an air pressure output end connecting air pipe and a quick pluggable joint connecting the air pressure output end connecting air pipe. The quick pluggable joint is the quick pluggable joint with the air release valve 30 in the above embodiment. One end of the quick pluggable joint is firmly connected to the air pipe of the air pressure output end, the other end of the quick pluggable joint is quickly docked with the terminal to be inflated, and through the elastic sheet metal part, it is quickly clamped on the valve core of the tire or the air nozzle of the air cushion to achieve a sealed connection, and then inflation can be implemented; when overinflated, the air can also be released and depressurized through the pressure relief valve of the quick change joint, and one-key operation can be implemented. It is generally arranged in a linear shape, the overall structure is compact, generous and beautiful, and it is convenient to operate.

[0039] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0040] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A quick-plug connector with a deflation valve, used to connect a pressure output end and a terminal to be inflated, characterized in that: The quick-plug connector includes a connector assembly, a spring buckle and an air release valve; the connector assembly is provided with a quick-plug sealing interface, a fixed end interface and an installation cavity; the quick-plug sealing interface is used to connect with the terminal to be inflated; the fixed end interface is used to firmly connect with the air pressure output end; one end of the spring buckle is installed on the connector assembly, and the other end of the spring buckle is used to be clamped on the thread or bayonet of the terminal to be inflated; the air release valve is installed on the installation cavity, and when the terminal to be inflated is over-pressurized, the air release valve is pressed to release the over-pressurized gas in the terminal to be inflated.

2. The quick-disconnect connector with a vent valve according to claim 1, characterized in that: The joint assembly includes a joint body, an external air nozzle guide arranged at one end of the joint body, an air pipe cover and a locking spring arranged at the other end of the joint body, the external air nozzle guide and the joint body form the quick-plug sealing interface, and the air pipe cover, the joint body and the locking spring form the fixed end interface.

3. The quick-disconnect connector with a vent valve according to claim 2, characterized in that: The connector body has a gas circulation cavity, one end of the connector body is clamped with the external gas nozzle guide, the end of the connector body is provided with a gas nozzle fixing part and a gas nozzle sealing ring, the opposite sides of the gas nozzle fixing part are provided with air holes connected with the gas circulation cavity, the gas nozzle sealing ring cooperates with the gas nozzle fixing part and the external gas nozzle guide part for interference docking with the terminal to be inflated.

4. The quick-disconnect connector with a vent valve according to claim 3, characterized in that: The external air nozzle guide is provided with a clamping cavity, and the joint body is provided with a clamping block, and the clamping block is clamped on the clamping cavity.

5. The quick-disconnect connector with a vent valve according to claim 4, characterized in that: The external air nozzle guide is also provided with a first connecting cavity and a second connecting cavity, and the joint body is provided with a first connecting block and a second connecting block, the first connecting block is accommodated in the first connecting cavity, and the second connecting block is accommodated in the second connecting cavity.

6. The quick-disconnect connector with a vent valve according to claim 3, characterized in that: The joint body is further provided with a clamping portion for clamping the fixed end of the spring buckle, and the external air nozzle guide is further provided with an active cavity for plugging the active end of the spring buckle.

7. The quick-disconnect connector with a vent valve according to claim 6, characterized in that: The fixed end is provided with a U-shaped bayonet, and the movable end is provided with a U-shaped groove.

8. The quick-disconnect connector with a vent valve according to claim 2, characterized in that: The other end of the joint body is provided with a connecting pipe with an undercut pattern, the air pipe blocking cover is sleeved on the connecting pipe, and the locking spring is sleeved between the air pipe blocking cover and the connecting pipe.

9. The quick-disconnect connector with a vent valve according to claim 1, characterized in that: The air release valve includes an air release valve core, an air release valve seat, an air release valve port sealing ring, an air release valve button and a pressure spring. The air release valve core is provided with multiple air release ports, the air release valve seat is provided with multiple air release grooves, and a air release gap is provided between the air release valve button and the air release valve seat.

10. An inflation system, characterized in that: It comprises a quick-plug connector connected to an air pipe at an air pressure output end and to the air pipe at the air pressure output end, wherein the quick-plug connector is a quick-plug connector with an air release valve as described in any one of claims 1 to 9.

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