Air path quick connector and air valve module

Abstract

The utility model relates to a pneumatic control technical field discloses a kind of gas path quick connector and gas valve module.The gas path quick connector of utility model embodiment includes gas pipe joint part, gas nozzle access part and positioning fixed part, and gas pipe joint part is connected with gas nozzle access part;Positioning fixed part is connected in gas nozzle access part, and positioning fixed part extends to the outside of gas nozzle access part and is formed with clamping fixed groove between gas nozzle access part, and first clamping structure is equipped on positioning fixed part.The gas path quick connector of utility model, first clamping structure is arranged on the positioning fixed part extending to the outside of gas nozzle access part, so that first clamping structure can be clamped with the clamping structure located in the outside of shell, that is, so that clamping operation is completely completed in the outside of shell, to reduce alignment difficulty and operation complexity, realize quick, convenient disassembly and assembly.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic control technology, and in particular to a quick-connect pneumatic circuit component and a pneumatic valve module. Background Technology

[0002] In the prior art, the valve module includes a quick connector, a housing, and a valve assembly disposed within the housing. The valve assembly consists of multiple valves, and the nozzles of the multiple valves are connected to the air pipes via quick connectors.

[0003] When assembling the valve module, the valve assembly is installed inside the housing, and a quick-connect coupling is connected to the housing, allowing the valve assembly's nozzle to communicate with the quick-connect coupling, which in turn allows the valve assembly to be connected to the air pipe. However, when assembling the quick-connect coupling and housing together, the quick-connect coupling is usually snapped into place. The snap-fit ​​structure of the housing is located on the inside, making the quick-connect coupling internally snapped into place, which is inconvenient for disassembling and assembling the quick-connect coupling, thus affecting assembly and maintenance efficiency. Furthermore, in terms of assembling the quick-connect coupling and housing, there is a lack of a clamping and fixing structure for the quick-connect coupling to the housing and a positioning structure for the valve, making it difficult to guarantee the installation stability of the quick-connect coupling and housing and the docking accuracy with the valve. Utility Model Content

[0004] To address the shortcomings of the prior art, this utility model provides a quick-connect pneumatic circuit component and a valve module. The quick-connect pneumatic circuit component is provided with a positioning and fixing part extending outside the air nozzle inlet, and the positioning and fixing part is provided with a snap-fit ​​structure, so that the snap-fit ​​structure of the positioning and fixing part can snap-fit ​​with the snap-fit ​​structure located outside the housing of the valve module, so that the snap-fit ​​operation is completed entirely outside the housing, thereby reducing the difficulty of alignment and the complexity of operation, and realizing quick and convenient assembly and disassembly.

[0005] The technical effects to be achieved by this utility model are realized through the following aspects: In a first aspect, the present invention provides a quick-connect fitting for an air circuit, comprising an air pipe connector, an air nozzle inlet, and a positioning and fixing part. The air pipe connector is connected to the air nozzle inlet. The positioning and fixing part is connected to the air nozzle inlet and extends to the outside of the air nozzle inlet, forming a clamping and fixing groove between the positioning and fixing part and the air nozzle inlet. The positioning and fixing part is provided with a first snap-fit ​​structure.

[0006] In some implementations, the tracheal connector is provided with an air inlet channel extending to the end of the tracheal connector, and the air inlet channel is connected to the gas inlet channel in the nozzle inlet.

[0007] In this implementation, the air pipe is connected to the gas flow channel in the air nozzle inlet through the air inlet channel, forming a continuous unobstructed channel. This enables the air valve and air pipe to be connected after the quick-connect fitting is connected to the air valve, thereby improving the flow stability and response speed of the air circuit system.

[0008] In some implementations, the nozzle inlet is provided with a nozzle inlet groove extending to the end of the nozzle inlet, and the nozzle inlet groove is connected to the gas flow channel in the air pipe connector.

[0009] In this implementation, when assembling the air valve module, the air valve nozzle is inserted into the air nozzle inlet slot to connect the air valve and the quick-connect fitting. This allows the fluid in the inlet air channel, the air nozzle inlet slot, and the air valve to communicate with each other, thus ensuring that the air valve can be connected to the air pipe through the quick-connect fitting.

[0010] In some implementations, the first snap-fit ​​structure includes a snap-fit ​​slot.

[0011] In some implementations, the quick-connect fitting for the air circuit also has a protective portion surrounding the air pipe connector, the protective portion having an access hole for connecting the air pipe, and the air pipe connector extending into the access hole.

[0012] In some implementations, the quick-connect fitting for the air circuit further includes a mounting and positioning part connected to the air nozzle inlet and extending to the other side of the air nozzle inlet relative to the positioning and fixing part.

[0013] Secondly, this utility model provides a valve module, including a housing, a plurality of valves and a plurality of the above-mentioned quick-connect fittings for air passages, wherein the plurality of valves are disposed in the housing, and the plurality of quick-connect fittings for air passages are installed in the housing and connected to the plurality of valves respectively. The housing has an air inlet, the air valve nozzle extends into the air inlet, and the air inlet of the quick-connect fitting is inserted into the air valve nozzle within the air inlet; the housing is also provided with a second snap-fit ​​structure, and the first snap-fit ​​structure snaps into the second snap-fit ​​structure.

[0014] In this implementation, the first snap-fit ​​structure snaps into the second snap-fit ​​structure to achieve snap-fit ​​between the quick-connect pneumatic component and the housing. When the first snap-fit ​​structure and the second snap-fit ​​structure are snapped into place, the air valve nozzle and the air valve inlet are simultaneously inserted.

[0015] In some implementations, the second snap-fit ​​structure is disposed on the outer wall of the air inlet of the housing, and the clamping and fixing groove clamps the outer wall of the air inlet.

[0016] In some implementations, the second snap-fit ​​structure includes a snap-fit ​​protrusion.

[0017] In some implementations, the end of the air nozzle inlet is positioned against the bottom of the air nozzle of the air valve.

[0018] In this implementation, positioning installation is achieved, thereby improving the docking accuracy between the nozzle inlet and the nozzle, making gas conduction more reliable.

[0019] In some implementations, a sealing ring is provided between the air nozzle inlet and the air nozzle of the air valve for sealed connection.

[0020] In summary, this utility model has at least the following advantages: (1) The quick-connect fitting for the air circuit provided by this utility model is provided with a positioning and fixing part extending outside the air nozzle inlet part, and a first snap-fit ​​structure is provided on the positioning and fixing part, so that the first snap-fit ​​structure can snap-fit ​​with the snap-fit ​​structure located outside the housing, so that the snap-fit ​​operation is completely completed outside the housing, and the operator can directly observe the snap-fit ​​position without going into the housing, thereby reducing the difficulty of alignment and the complexity of operation, and realizing quick and convenient disassembly and assembly; at the same time, the external snap-fit ​​structure does not need to occupy the internal space of the housing, avoiding the problem of reserving internal redundant space to adapt to the internal snap-fit ​​structure, thereby making the overall structure more compact.

[0021] (2) The air valve module provided by this utility model forms a clamping and fixing groove between the positioning and fixing part and the air nozzle access part. The wall of the housing is clamped in the clamping and fixing groove, so that the housing and the air circuit quick connector are clamped and fixedly installed, thereby enhancing the installation strength between the housing and the air circuit quick connector. In addition, the clamping and fixing groove can play a pre-positioning role during installation, and can realize the positioning and snapping between the first snap-fit ​​structure and the second snap-fit ​​structure; and the positioning and insertion between the air nozzle access part and the air valve nozzle. The end of the air nozzle access part can abut against the bottom of the air valve nozzle, improving the docking accuracy between the air nozzle and the air nozzle access part, thereby improving the installation efficiency while ensuring the reliability of the overall structure. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the quick-connect pneumatic connector according to an embodiment of the present utility model; Figure 2 This is a cross-sectional view of the quick-connect pneumatic connector according to an embodiment of the present utility model. Figure 3 This is a three-dimensional structural diagram of the air valve module according to an embodiment of the present utility model; Figure 4 This is a schematic cross-sectional view of the assembly of the air valve module according to an embodiment of the present utility model; Figure 5 for Figure 4 The enlarged view of the valve module at point A is shown. Figure 6 This is a three-dimensional structural diagram of the positioning groove and the mounting positioning part.

[0023] Marked in the image: 10. Quick-connect fittings for pneumatic lines; 100. Tracheal connector; 101. Inlet airway; 200. Air nozzle inlet; 201. Air nozzle inlet slot; 300, Positioning and fixing part; 301, Clamping and fixing groove; 310, First snap-fit ​​structure; 311, Snap-fit ​​groove; 320, Second guide surface; 400. Protection section; 401. Access hole; 500. Install positioning unit; 20. Air valve module; 600, housing; 601, air inlet; 602, positioning groove; 610, second snap-fit ​​structure; 611, snap-fit ​​protrusion; 6111, first guide surface; 620, first housing; 630, second housing; 700, air valve; 800, sealing ring. Detailed Implementation

[0024] 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. The described embodiments are some, but not all, of the embodiments of this utility model.

[0025] 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.

[0026] Firstly, please refer to the appendix. Figure 1 ~Appendix Figure 6 The quick-connector 10 of this utility model includes an air pipe connector 100, an air nozzle inlet 200, and a positioning and fixing part 300.

[0027] In this regard, please combine Figure 1 and Figure 2 , Figure 1 and Figure 2The diagram illustrates the structural relationship between the air tube connector 100, the air nozzle inlet 200, and the positioning and fixing part 300 in this embodiment of the present invention. Specifically, the air tube connector 100 is connected to the air nozzle inlet 200; the positioning and fixing part 300 is connected to the air nozzle inlet 200, and the positioning and fixing part 300 extends to the outside of the air nozzle inlet 200 and forms a clamping and fixing groove 301 between it and the air nozzle inlet 200. The positioning and fixing part 300 is provided with a first snap-fit ​​structure 310.

[0028] In this embodiment of the invention, the quick-connect fitting 10 is used to connect the air valve 700 in the valve module to an external air pipe. The air valve 700 is installed inside the housing 600, the quick-connect fitting 10 is snapped into the housing 600, and the air nozzle of the air valve 700 is connected to the quick-connect fitting 10, thus achieving a fixed installation between the air valve 700, the housing 600, and the quick-connect fitting. Furthermore, the air valve 700 can be connected to the air pipe through the quick-connect fitting 10. Specifically, the air valve 700 is installed inside the housing 600, and the wall of the housing 600 is clamped in the clamping and fixing groove 301. The first snap-fit ​​structure 310 is snapped onto the second snap-fit ​​structure 610 on the outside of the wall of the housing 600, so that the housing 600 and the quick-connect fitting 10 are fixedly installed. The air nozzle of the air valve 700 is connected to the air nozzle inlet 200, so that the air valve 700 and the quick-connect fitting 10 are fixedly installed. The air pipe is connected to the air pipe connector 100. Since the air pipe connector 100 is connected to the air nozzle inlet 200 and the internal gas flow channel is open, the air nozzle of the air valve 700 can be connected to the air pipe through the quick-connect fitting 10, thereby realizing the connection between the air nozzle and the air pipe of the air valve 700.

[0029] It is understood that the clamping and fixing groove 301 formed by the positioning and fixing part 300 and the air nozzle inlet part 200 can form a ring-shaped clamping force on the wall of the housing 600 when it is snapped together. Together with the first snap-fit ​​structure 310, it can provide double fixation from the horizontal and vertical directions respectively, preventing the air quick connector 10 from falling off the housing 600 and making the connection more stable.

[0030] It should be noted that the first snap-fit ​​structure 310 is located on the positioning and fixing part 300 outside the air nozzle inlet 200. When assembling the valve module, the snap-fit ​​operation is carried out entirely outside the housing 600. The operator can directly observe the snap-fit ​​position without having to go inside the housing 600, which makes the alignment accuracy higher and avoids the problem of accidentally touching the air valve 700, air pipe and other precision components and causing damage during internal snap-fit ​​operation. When disassembling, the quick-connect fitting 10 of the air circuit can be directly released from the outside to complete the replacement, reducing interference with the air valve 700 and other components such as air pipe, realizing visual operation, reducing the difficulty of disassembly and thus improving maintenance efficiency.

[0031] The aforementioned quick-connect fitting 10 for the air circuit has a first snap-fit ​​structure 310 disposed on the positioning and fixing part 300 extending outside the air nozzle inlet 200. This allows the first snap-fit ​​structure 310 to snap into the snap-fit ​​structure located outside the housing 600, so that the snap-fit ​​operation is completed entirely outside the housing 600. The operator can directly observe the snap-fit ​​position without having to go inside the housing 600, thereby reducing the difficulty of alignment and the complexity of operation, and achieving quick and convenient disassembly and assembly. At the same time, the external snap-fit ​​structure does not occupy the internal space of the housing 600, avoiding the problem of reserving internal redundant space to accommodate the internal snap-fit ​​structure, thus making the overall structure more compact.

[0032] In some preferred embodiments, the tracheal connector 100 is provided with an air inlet channel 101 extending to the end of the tracheal connector 100, and the air inlet channel 101 communicates with the gas flow channel in the nozzle inlet 200. The tracheal tube is connected to the gas flow channel in the nozzle inlet 200 through the air inlet channel 101, forming a continuous, unobstructed passage. This allows the gas valve 700 to connect to the tracheal tube after the quick-connect fitting 10 is connected to the gas valve 700, improving the flow stability and response speed of the air system. Furthermore, since the air inlet channel 101 is connected to the gas flow channel in the nozzle inlet 200, the operator only needs to connect the nozzle of the gas valve 700 to the gas flow channel to achieve airflow connection with the tracheal tube, making the connection between the tracheal tube and the nozzle faster and more convenient.

[0033] In some preferred embodiments, the nozzle inlet 200 is provided with a nozzle inlet groove 201 extending to the end of the nozzle inlet 200, and the nozzle inlet groove 201 communicates with the gas flow channel in the air pipe connector 100. That is, the gas flow channel 101 communicates with the nozzle inlet groove 201. When the air valve module 20 is assembled, the nozzle of the air valve 700 is inserted into the nozzle inlet groove 201 to achieve a fixed connection between the air valve 700 and the quick-connect fitting 10, and at the same time, to achieve mutual conduction of fluid in the gas flow channel 101, the nozzle inlet groove 201 and the air valve 700, thereby ensuring that the air valve 700 can communicate with the air pipe through the quick-connect fitting 10.

[0034] In some preferred embodiments, the first snap-fit ​​structure 310 includes a snap-fit ​​groove 311. The second snap-fit ​​structure 610 on the outside of the housing 600 snaps into the snap-fit ​​groove 311, thereby preventing the quick-connect pneumatic component 10 from detaching from the housing 600 in the horizontal direction. Furthermore, the structure of the snap-fit ​​groove 311 facilitates the installation of the quick-connect pneumatic component 10. When the snap-fit ​​groove 311 and the second snap-fit ​​structure 610 on the outside of the housing 600 are snapped together, the air nozzle of the air valve 700 and the air nozzle access portion 200 are simultaneously inserted, thereby improving assembly efficiency.

[0035] In some more preferred embodiments, the quick-connect fitting 10 further includes a protective portion 400 surrounding the tracheal connector 100. The protective portion 400 protects the tracheal connector 100, preventing interference and damage between the tracheal connector 100 and other components. The protective portion 400 has an access hole 401 for tracheal connection, and the tracheal connector 100 extends into the access hole 401. The tracheal tube enters the access hole 401 and connects to the tracheal connector 100. Simultaneously, the wall of the access hole 401 protects the connection between the tracheal tube and the tracheal connector 100, thereby enhancing the connection stability between the tracheal tube and the tracheal connector 100. Preferably, the tracheal tube is fitted over the tracheal connector 100.

[0036] In some embodiments, the air pipe connector 100, the air nozzle inlet 200, the positioning and fixing part 300, and the protective part 400 of the air quick connector 10 can be integrally formed.

[0037] Secondly, based on the above embodiments, this utility model embodiment also provides a valve module 20. The valve module 20 of this utility model embodiment includes a housing 600, a plurality of valves 700, and a plurality of the above-mentioned quick-connect fittings 10 for air passages.

[0038] In this regard, please combine Figure 3 and Figure 4 , Figure 3 and Figure 4 The diagram illustrates the structural relationship between the housing 600, the air valve 700, and the quick-connect air connector 10 in this embodiment of the present invention. Specifically, a plurality of air valves 700 are disposed within the housing 600, and a plurality of quick-connect air connectors 10 are installed in the housing 600 and connected to the plurality of air valves 700 respectively; the housing 600 has an air inlet 601, the air nozzle of the air valve 700 extends into the air inlet 601, and the air nozzle access portion 200 of the quick-connect air connector 10 is inserted into the air inlet 601 and connected to the air nozzle of the air valve 700; and the housing 600 is provided with a second snap-fit ​​structure 610, and the first snap-fit ​​structure 310 snaps into the second snap-fit ​​structure 610.

[0039] In this embodiment of the utility model, the number of quick-connect fittings 10 and air valves 700 are matched so that a number of air valves 700 and a number of quick-connect fittings 10 are connected in a one-to-one correspondence. The first snap-fit ​​structure 310 snaps into the second snap-fit ​​structure 610 to realize the snap-fit ​​between the quick-connect fittings 10 and the housing 600. When the first snap-fit ​​structure 310 and the second snap-fit ​​structure 610 are snapped into place, the air nozzle and the air nozzle access part 200 of the air valve 700 are simultaneously inserted. A clamping groove 301 is formed between the positioning and fixing part 300 and the air nozzle inlet part 200. The wall of the housing 600 is clamped in the clamping and fixing groove 301, thereby enhancing the installation strength between the housing 600 and the air circuit quick connector 10. In addition, it can play a role in pre-positioning during installation, realizing the positioning and locking between the first locking structure 310 and the second locking structure 610, as well as the positioning and insertion between the air nozzle inlet part 200 and the air nozzle of the air valve 700, thereby improving installation efficiency and ensuring the reliability of the overall structure.

[0040] Furthermore, several adjacent quick-connect fittings 10 can be integrated into one unit. In this way, multiple air valves 700 nozzles can be connected to multiple air pipes one by one at a time, thereby improving the efficiency of disassembly and assembly.

[0041] In some preferred embodiments, the end of the nozzle inlet 200 may abut against the bottom of the nozzle of the air valve 700. Specifically, the end of the nozzle inlet groove 201 may abut against the bottom of the nozzle of the air valve 700. Optionally, the air valve 700 is provided with an inflation nozzle for connection to an air pipe and an air inlet nozzle for insertion into the centralized air inlet pipe of the air valve module. When the inflation nozzle and the air inlet nozzle are orthogonally arranged, the nozzle inlet groove 201 can be inserted into the inflation nozzle and its end can abut against the outer wall of the air inlet nozzle, achieving positioning installation, thereby improving the docking accuracy between the nozzle inlet and the nozzle, and making gas conduction more reliable.

[0042] In some preferred embodiments, a sealing ring 800 is provided between the air nozzle inlet 200 and the air nozzle of the air valve 700 for a sealed connection. This ensures airtightness, avoids leakage when gas is flowing between the air pipe and the air valve 700, and thus ensures the reliability of the overall structure.

[0043] In some preferred embodiments, please refer to Figure 4 and Figure 5 , Figure 4 and Figure 5The diagram illustrates the structural relationship between the second snap-fit ​​structure 610 and the air inlet 601 in this embodiment of the present invention. Specifically, the second snap-fit ​​structure 610 is disposed on the outer wall of the air inlet 601 of the housing 600, and the clamping and fixing groove 301 clamps the outer wall of the air inlet 601. The inner wall of the clamping and fixing groove 301 fits against the outer wall of the air inlet 601, thereby increasing the connection area between the housing 600 and the quick-connect fitting 10, making the snap-fit ​​more stable. The clamping and fixing groove 301 pre-positions the outer wall of the air inlet 601 of the housing 600, facilitating the snap-fit ​​of the first snap-fit ​​structure 310 onto the second snap-fit ​​structure 610, thereby improving installation efficiency and ensuring snap-fit ​​accuracy.

[0044] In some preferred embodiments, the second snap-fit ​​structure 610 includes a snap-fit ​​protrusion 611. When the quick-connect pneumatic component 10 abuts against the gas inlet 601, the positioning and fixing part 300 elastically shifts, causing the snap-fit ​​groove 311 to snap into the snap-fit ​​protrusion 611. After the snap-fit ​​groove 311 snaps into the snap-fit ​​protrusion 611, the positioning and fixing part 300 resets, thereby achieving a snap-fit ​​between the quick-connect pneumatic component 10 and the housing 600. During disassembly, the positioning and fixing part 300 elastically shifts, causing the snap-fit ​​protrusion 611 to disengage from the snap-fit ​​groove 311, thereby releasing the snap-fit ​​state between the quick-connect pneumatic component 10 and the housing 600.

[0045] Further, please see Figure 5 , Figure 5 The diagram illustrates the structural relationship between the first guide surface 6111 and the second guide surface 320 in this embodiment of the present invention. Specifically, the snap-fit ​​protrusion 611 has a first guide surface 6111, and the positioning and fixing part 300 has a second guide surface 320. The second guide surface 320 cooperates with the first guide surface 6111 to guide the snap-fit ​​protrusion 611 to snap into the snap-fit ​​groove 311. Both the first guide surface 6111 and the second guide surface 320 are inclined surfaces. The first guide surface 6111 is disposed on the side of the snap-fit ​​protrusion 611 facing the quick-connect fitting 10 of the air passage. The first guide surface 6111 starts from the bottom of the snap-fit ​​protrusion 611 and is inclined upward in a direction away from the quick-connect fitting 10 of the air passage. The second guide surface 320 is disposed on the side of the positioning and fixing part 300 facing the housing 600. The second guide surface 320 starts from the edge of the positioning and fixing part 300 and is inclined downward in a direction away from the housing 600. When the snap-fit ​​protrusion 611 is snapped into the snap-fit ​​groove 311, the first guide surface 6111 directly contacts the second guide surface 320 and guides the snap-fit ​​protrusion 611 smoothly into the snap-fit ​​groove 311, so that the snap-fit ​​process is more effortless.

[0046] In some preferred embodiments, please refer to Figure 6 , Figure 6The diagram illustrates the structural relationship between the positioning groove 602 and the mounting positioning part 500 in this embodiment of the present invention. Specifically, the housing 600 is further provided with a positioning groove 602, which is located on the opposite side of the air inlet 601 relative to the second snap-fit ​​structure 610, such as the bottom surface of the housing 600. The quick-connect fitting 10 for the air passage is also provided with a mounting positioning part 500 that is positioned and inserted into the positioning groove 602. The mounting positioning part 500 is connected to the air nozzle inlet 200, and the mounting positioning part 500 extends to the other outer side of the air nozzle inlet 200 relative to the positioning fixing part 300. That is, the positioning fixing part 300 and the mounting positioning part 500 extend to the upper and lower sides of the air nozzle inlet 200, respectively. The mounting and positioning part 500 is located on the opposite side of the quick-connect fitting 10 relative to the positioning and fixing part 300. When assembling the valve module 20, the mounting and positioning part 500 extends into the positioning groove 602 to position the quick-connect fitting 10 and the housing 600, thereby enabling the snap-fit ​​groove 311 and the snap-fit ​​protrusion 611 to achieve precise snap-fit. The positioning and fixing part 300 and the mounting and positioning part 500 clamp the housing 600 from the top and bottom respectively, so that the quick-connect fitting 10 is positioned and clamped on the housing 600. The nozzle inlet part 200 and the nozzle of the valve 700 are precisely inserted, thereby improving the ease of installation of the valve module 20.

[0047] In some preferred embodiments, the housing 600 includes a first housing 620 and a second housing 630. The second housing 630 is connected to the first housing 620 and together they form an installation space. A second snap-fit ​​structure 610 is formed on the first housing 620, and a positioning groove 602 is formed on the second housing 630. The snap-fit ​​groove 311 of the quick-connect pneumatic component 10 snaps into the snap-fit ​​protrusion 611 of the first housing 620. The mounting positioning part 500 of the quick-connect pneumatic component 10 on the opposite side to the positioning fixing part 300 is positioned and inserted into the positioning groove 602 of the second housing 630. This makes the installation of the valve module 20 more compact, and makes the installation stability of the quick-connect pneumatic component 10 relative to the housing 600 stronger through the clamping engagement between the positioning fixing part 300 and the mounting positioning part 500, resulting in a more reliable overall structure.

[0048] In some embodiments, the air pipe connector 100, the air nozzle inlet 200, the positioning and fixing part 300, the protection part 400, and the mounting and positioning part 500 of the air quick connector 10 can be integrally formed.

[0049] In the aforementioned air valve module 20, a clamping and fixing groove 301 is formed between the positioning and fixing part 300 and the air nozzle access part 200. The wall of the housing 600 is clamped in the clamping and fixing groove 301, so that the housing 600 and the air circuit quick connector 10 are clamped and fixedly installed, thereby enhancing the installation strength between the housing 600 and the air circuit quick connector 10. Furthermore, the clamping and fixing groove 301 can play a pre-positioning role during installation, enabling positioning and locking between the first snap-fit ​​structure 310 and the second snap-fit ​​structure 610, as well as positioning and insertion between the air nozzle access part 200 and the air nozzle of the air valve 700. The end of the air nozzle access part 200 can abut against the bottom of the air nozzle of the air valve 700, improving the docking accuracy between the air nozzle and the air nozzle access part 200, thereby improving installation efficiency while ensuring the reliability of the overall structure.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., 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 of this utility model 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0052] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0053] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0054] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A quick-connect fitting for pneumatic circuits, characterized in that, It includes an air pipe connector (100), an air nozzle inlet (200), and a positioning and fixing part (300). The air pipe connector (100) is connected to the air nozzle inlet (200). The positioning and fixing part (300) is connected to the air nozzle inlet (200), and the positioning and fixing part (300) extends to the outside of the air nozzle inlet (200) and forms a clamping and fixing groove (301) between it and the air nozzle inlet (200). The positioning and fixing part (300) is provided with a first snap-fit ​​structure (310).

2. The quick-connect fitting for pneumatic circuits according to claim 1, characterized in that, The tracheal connector (100) is provided with an air inlet channel (101) extending to the end of the tracheal connector (100), and the air inlet channel (101) is connected to the gas inlet channel in the nozzle inlet (200).

3. The quick-connect fitting for pneumatic circuits according to claim 1, characterized in that, The nozzle inlet (200) is provided with a nozzle inlet groove (201) extending to the end of the nozzle inlet (200), and the nozzle inlet groove (201) is connected to the gas flow channel in the air pipe connector (100).

4. The quick-connect fitting for pneumatic circuits according to claim 1, characterized in that, The first snap-fit ​​structure (310) includes a snap-fit ​​groove (311).

5. The quick-connect fitting for pneumatic circuits according to any one of claims 1-4, characterized in that, It also includes a mounting and positioning part (500), which is connected to the nozzle inlet (200) and extends to the other side of the nozzle inlet (200) relative to the positioning and fixing part (300).

6. A pneumatic valve module, characterized in that, It includes a housing (600), a plurality of air valves (700) and a plurality of air circuit quick connectors (10) as described in claims 1-5 above. The plurality of air valves (700) are disposed inside the housing (600), and the plurality of air circuit quick connectors (10) are installed in the housing (600) and connected to the plurality of air valves (700) respectively. The housing (600) has an air inlet (601), the air nozzle of the air valve (700) extends into the air inlet (601), and the air nozzle access part (200) of the air circuit quick connector (10) is inserted into the air inlet (601) and the air nozzle of the air valve (700); and the housing (600) is provided with a second snap-fit ​​structure (610), and the first snap-fit ​​structure (310) snaps into the second snap-fit ​​structure (610).

7. The air valve module according to claim 6, characterized in that, The second snap-fit ​​structure (610) is provided on the outer wall of the air inlet (601) of the housing (600), and the clamping and fixing groove (301) clamps the outer wall of the air inlet (601).

8. The air valve module according to claim 6, characterized in that, The second snap-fit ​​structure (610) includes a snap-fit ​​protrusion (611).

9. The air valve module according to claim 6, characterized in that, The end of the air nozzle inlet (200) is positioned against the bottom of the air nozzle of the air valve (700).

10. The air valve module according to claim 6, characterized in that, A sealing ring (800) is provided between the air nozzle inlet (200) and the air nozzle of the air valve (700) for sealing connection.

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