Quick plug connector

Abstract

The embodiment of the utility model provides a quick connector which is used for connecting pipelines and comprises a shell assembly, a pressing piece and a clamping piece. The shell assembly is provided with a containing cavity, and the two opposite ends of the containing cavity in the extending direction are open so that a first connector and a second connector can be formed respectively. The pressing piece is movably arranged at the first connector, and at least part of the area of the pressing piece is located in the containing cavity. The clamping piece is movably arranged in the containing cavity, the clamping piece has a locking state and an unlocking state, and when the clamping piece is in the locking state, the clamping piece is located at a first position where the clamping piece and the pipeline are clamped and limited; under the action of external force, the pressing piece is movably connected with the clamping piece in an abutting mode, so that the clamping piece is located at the second position avoiding the pipeline, and the clamping piece is switched to the unlocking state. The quick connector provided by the embodiment of the utility model is convenient to disassemble and assemble.

Description

Technical Field

[0001] This application relates to the technical field of air suspension piping systems for passenger vehicles, and in particular to a quick-connect coupling. Background Technology

[0002] With the development of the automotive industry, the air suspension piping system in passenger vehicles plays a vital role in improving vehicle performance and comfort. In the air suspension piping system of passenger vehicles, pipe connectors are devices used to connect the pipes.

[0003] However, the pipe fittings in the relevant technology are inconvenient to assemble and disassemble. Utility Model Content

[0004] In view of this, the main objective of the embodiments of this application is to provide a quick-connect connector that is easy to install and disassemble.

[0005] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:

[0006] This application provides a quick-connect fitting for connecting pipelines, including:

[0007] A housing assembly having a receiving cavity that opens at opposite ends along an extending direction to form a first interface and a second interface, respectively;

[0008] A pressing member is movably disposed at the first interface, and at least a portion of the pressing member is located within the receiving cavity;

[0009] A snap-fit ​​connector is movably disposed within the receiving cavity. The snap-fit ​​connector has a locked state and an unlocked state. When the snap-fit ​​connector is in the locked state, it is in a first position where it is snapped into and limited by the pipeline. Under the action of external force, the pressing member moves to abut against the snap-fit ​​connector, so that the snap-fit ​​connector is in a second position where it avoids the pipeline, and the snap-fit ​​connector switches to the unlocked state.

[0010] In one embodiment, the snap-fit ​​component includes a fixed end and a movable end. The fixed end is disposed on one side of the cavity wall near the receiving cavity, and the movable end is used for snap-fit ​​and limiting with the pipeline. When the snap-fit ​​component is in the second position, the pressing member abuts against the movable end and moves along the fixed end to the movable end, and the snap-fit ​​component is tilted toward the side away from the first interface.

[0011] In one embodiment, the cross-sectional area of ​​the movable end is larger than the cross-sectional area of ​​the fixed end; and / or, the side of the movable end away from the fixed end is arc-shaped.

[0012] In one embodiment, the quick-connect fitting includes a first seal and a mounting base located within the receiving cavity. A portion of the receiving cavity protrudes inward to form a first step. The first seal is disposed on the first step. At least a portion of the snap-fit ​​member is disposed on the mounting base. The mounting base is disposed on the side of the first seal near the first interface to restrict the movement of the first seal.

[0013] In one embodiment, the housing assembly includes a first housing and a second housing, the first housing having the first interface, the second housing having the second interface and the first step, the first housing and the second housing being threaded or welded together, and the end of the first housing being spaced apart from the first step, and at least one of the mounting base, the snap-fit ​​member and the first seal member being disposed within the space between the first housing and the first step.

[0014] In one embodiment, the quick-connect fitting includes a second seal, and the housing assembly includes an interface end having the second interface for threaded connection with the conduit, the second seal being disposed on the outer peripheral side of the interface end.

[0015] In one embodiment, a portion of the outer surface of the pressing member protrudes toward one side of the cavity wall of the receiving cavity to form a limiting protrusion, and a portion of the inner wall surface of the receiving cavity protrudes toward the cavity to form a second step. The limiting protrusion is located on the side of the second step near the second interface and abuts against the second step to restrict the pressing member from leaving the receiving cavity.

[0016] In one embodiment, a portion of the outer surface of the pressing member protrudes to form an abutment portion, the abutment portion being located on the side of the second step opposite to the second interface;

[0017] When the latch is in the unlocked state, the abutment portion abuts against the housing assembly to restrict the movement of the press member toward the side closer to the second interface.

[0018] In one embodiment, the abutting portion includes a first abutting portion, which abuts against the end face of the housing assembly having the first interface when the latching member is in the unlocked state.

[0019] In one embodiment, the abutting portion includes a second abutting portion; when the latching member is in the unlocked state, the second abutting portion abuts against the side of the second step opposite to the limiting protrusion.

[0020] This application provides a quick-connect fitting for connecting pipelines. The quick-connect fitting includes a housing assembly, a pressing member, and a snap-fit ​​member. The housing assembly has a receiving cavity, which is open at opposite ends along its extension direction to form a first interface and a second interface, respectively. The pressing member is movably disposed at the first interface, and at least a portion of the pressing member is located within the receiving cavity. The snap-fit ​​member is movably disposed within the receiving cavity and has a locked state and an unlocked state. When the snap-fit ​​member is in the locked state, it is in a first position where it is engaged with and limited by the pipeline. Under external force, the pressing member moves to abut against the snap-fit ​​member, causing the snap-fit ​​member to be in a second position where it avoids the pipeline, and the snap-fit ​​member switches to the unlocked state. Thus, through the cooperation of the pressing member and the snap-fit ​​member, a quick and easy connection and disassembly operation between the quick-connect fitting and the pipeline is achieved. The operator only needs to press the pressing member to unlock the snap-fit ​​member and easily pull out the pipeline, greatly shortening the assembly and disassembly time and improving work efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a quick-connect connector according to an embodiment of this application;

[0022] Figure 2 for Figure 1 Cross-sectional view of the quick-connect fitting;

[0023] Figure 3 This is a schematic diagram of the structure of a snap-fit ​​connector according to an embodiment of this application.

[0024] Explanation of reference numerals in the attached figures

[0025] 10. Housing assembly; 11. First housing; 11a. First interface; 111. Second step; 12. Second housing; 12a. Second interface; 121. First step; 20. Pressing element; 21. Limiting protrusion; 22. First abutment part; 23. Second abutment part; 30. Snap-fit ​​element; 31. Fixed end; 32. Movable end; 40. First seal; 50. Mounting base; 60. Second seal. Detailed Implementation

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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 the embodiments of this application according to the specific circumstances.

[0028] In this application, the orientation or positional relationship of "height direction" is based on the appendix. Figure 2 The orientation or positional relationship shown is for illustrative purposes only and is not intended to 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, it should not be construed as a limitation of this application.

[0029] One embodiment of this application provides a quick-connect fitting for connecting pipelines. Please refer to [link to relevant documentation]. Figure 1 , Figure 2 and Figure 3 The quick-connect connector includes a housing assembly 10, a pressing member 20, and a snap-fit ​​member 30.

[0030] The housing assembly 10 has a receiving cavity that is open at opposite ends along the extending direction to form a first interface 11a and a second interface 12a, respectively.

[0031] The pressing member 20 is movably disposed at the first interface 11a, and at least a portion of the pressing member 20 is located in the receiving cavity.

[0032] The snap-fit ​​element 30 is movably disposed within the receiving cavity. The snap-fit ​​element 30 has a locked state and an unlocked state. When the snap-fit ​​element 30 is in the locked state, it is in the first position where it is snapped into and limited by the pipeline. Under the action of external force, the pressing element 20 moves to abut against the snap-fit ​​element 30, so that the snap-fit ​​element 30 is in the second position where it avoids the pipeline, and the snap-fit ​​element 30 switches to the unlocked state.

[0033] Specifically, housing assembly 10 refers to the main structure of the quick-connect connector, which serves to house and protect other internal components.

[0034] Pressing element 20 refers to the component that cooperates with snap-fit ​​element 30 to enable the quick-connect fitting to be installed and unlocked.

[0035] The pressing member 20 is disposed in the receiving cavity via the first interface 11a, with at least a portion of the area disposed therein.

[0036] The pressing element 20 may be partially located within the receiving cavity, or it may be entirely located within the receiving cavity.

[0037] When pressed by external force, the pressing member 20 can move within the receiving cavity, thereby interacting with the snap-fit ​​member 30 and changing the state of the snap-fit ​​member 30 to achieve the disassembly of the pipeline.

[0038] The snap-fit ​​component 30 refers to the component that snaps into and limits the connection with the pipeline.

[0039] The snap-fit ​​connector 30 has a locked state and an unlocked state. By cooperating with the pressing member 20, the snap-fit ​​connector 30 switches between the two states, thereby controlling the connection and disconnection of the quick-connect fitting and the pipeline.

[0040] When the snap-fit ​​connector 30 is in the locked state, the snap-fit ​​connector 30 and the pipeline are in a stable connection state. At this time, a reliable connection is formed between the quick-connect connector and the pipeline, which can transmit the medium normally. Under normal use conditions, the pipeline will not easily fall off or loosen from the quick-connect connector.

[0041] When the snap-fit ​​connector 30 is in the unlocked state, the snap-fit ​​connector 30 releases the snap-fit ​​limit on the pipeline. At this time, the pipeline can be pulled out of or inserted into the quick-connect connector relatively freely, so as to carry out operations such as disassembly, maintenance, and replacement of the pipeline.

[0042] The structure of the snap-fit ​​connector 30 is not limited.

[0043] For example, the latching member 30 includes a fixed end 31 and a movable end 32. The fixed end 31 is disposed on one side near the cavity wall of the receiving cavity, and the movable end 32 is used for latching and limiting the connection with the pipeline. When the latching member 30 is in the second position, the pressing member 20 abuts against the movable end 32, and along the fixed end 31 to the movable end 32, the latching member 30 tilts towards the side away from the first interface 11a. This allows the pressing member 20 to more effectively transmit external force to the movable end 32, thereby unlocking the latching member 30.

[0044] Specifically, the fixed end 31 refers to the part on the snap-fit ​​30 used to fix the snap-fit ​​30 and restrict its movement.

[0045] The movable end 32 refers to the part that works with the pressing part 20, can move within a certain range, and can be snapped into place with the pipeline.

[0046] The first position and the second position are the different positions of the snap-fit ​​component 30 in different states.

[0047] The first position refers to the position of the active end 32 when the connector 30 is in the locked state.

[0048] It should be noted that the first position does not refer to a specific location. As long as the movable end 32 can be connected to the pipeline, the position of the movable end 32 can be the first position.

[0049] The second position refers to the position of the movable end 32 when the snap-fit ​​30 is in the unlocked state and the pipeline can move within the receiving cavity.

[0050] It should be noted that the second position does not refer to a specific location. As long as the pipeline can move relative to the movable end 32, the position of the movable end 32 can be the second position.

[0051] The material type of the snap-fit ​​component 30 is not limited.

[0052] For example, the material of the snap-fit ​​30 is metal.

[0053] Understandably, under the action of external force, the snap-fit ​​member 30 tilts towards the side away from the first interface 11a along the fixed end 31 to the movable end 32, so that the pipeline can pass smoothly through the snap-fit ​​member 30. When the external force is removed, under the action of elastic force, the movable end 32 of the metal snap-fit ​​member 30 moves towards the side closer to the first interface 11a until the movable end 32 is snapped into place with the pipeline, thereby realizing the connection between the pipeline and the quick-connect fitting.

[0054] The quick-connect connector of this application embodiment is used to connect pipelines. The quick-connect connector includes a housing assembly 10, a pressing member 20, and a snap-fit ​​member 30. The housing assembly 10 has a receiving cavity, which is open at opposite ends along its extension direction to form a first interface 11a and a second interface 12a, respectively. The pressing member 20 is movably disposed at the first interface 11a, and at least a portion of the pressing member 20 is located in the receiving cavity. The snap-fit ​​member 30 is movably disposed in the receiving cavity and has a locked state and an unlocked state. When the snap-fit ​​member 30 is in the locked state, it is in a first position that limits engagement with the pipeline. Under the action of external force, the pressing member 20 moves to abut against the snap-fit ​​member 30, so that the snap-fit ​​member 30 is in a second position that avoids the pipeline, and the snap-fit ​​member 30 switches to the unlocked state. Thus, through the cooperation of the pressing member and the snap-fit ​​member 30, a quick and easy connection and disassembly operation between the quick-connect connector and the pipeline is realized. Operators only need to press the pressing part 20 to unlock the locking part 30, making it easy to pull out the pipeline, which greatly shortens the disassembly and assembly time and improves work efficiency.

[0055] In one embodiment, please refer to Figure 3The cross-sectional area of ​​the movable end 32 is larger than that of the fixed end 31. Therefore, on the one hand, the larger cross-sectional area of ​​the movable end 32 provides a larger contact area and clamping force when engaging with the pipeline. This helps to secure the pipeline more firmly, reducing the risk of pipeline detachment or loosening during use and improving the reliability of the quick-connect coupling. On the other hand, the smaller cross-sectional area of ​​the fixed end 31 allows the pressing member 20 to more effectively drive the movable end 32 by pressing, thereby achieving a rapid switch of the locking member 30 from the locked state to the unlocked state. This improves the sensitivity and convenience of the quick-connect coupling unlocking operation, enabling the quick and reliable release of the connection limit relationship between the locking member 30 and the pipeline when pipeline disassembly is required.

[0056] In one embodiment, please refer to Figure 3 The movable end 32 is arc-shaped on the side facing away from the fixed end 31. This allows the movable end 32 to better conform to the outer wall of the pipeline when in contact, providing a more uniform clamping force, improving the firmness of the connection between the movable end 32 and the pipeline, making the pipeline connection more reliable, and reducing the risk of leakage.

[0057] In one embodiment, please refer to Figure 2 The quick-connect fitting includes a first seal 40 and a mounting base 50 located within a receiving cavity. A portion of the receiving cavity protrudes inward to form a first step 121. The first seal 40 is disposed on the first step 121, and at least a portion of the snap-fit ​​member 30 is disposed on the mounting base 50. The mounting base 50 is located on the side of the first seal 40 near the first interface 11a to restrict the movement of the first seal 40. Thus, on the one hand, by placing the first seal 40 on the first step 121, the positioning and supporting function of the first step 121 allows the first seal 40 to better fit with the pipeline and other components, forming an effective seal. On the other hand, the mounting base 50, located on the side of the first seal 40 near the first interface 11a, restricts the movement of the first seal 40, preventing displacement or deformation of the first seal 40 during operation, thereby further improving the sealing effect.

[0058] Specifically, the first seal 40 refers to a component used to prevent the medium (gas, liquid, etc.) from leaking at the quick-connect fitting.

[0059] The structure of the first sealing element 40 is not limited, as long as it can seal the pipeline and quick-connect fitting.

[0060] For example, the first seal 40 is a sealing ring.

[0061] Mounting base 50 refers to the component used to mount the snap-fit ​​connector 30.

[0062] The mounting base 50 can be positioned within the receiving cavity of the quick-connect connector in any manner.

[0063] For example, a portion of the inner wall of the receiving cavity is recessed to form a mounting groove, and a portion of the mounting base 50 is disposed within the mounting groove.

[0064] There is no limit to the quantity of the 30 card connectors.

[0065] For example, there are multiple snap-fit ​​pieces 30, and each snap-fit ​​piece 30 is arranged at intervals along the circumference of the mounting base 50.

[0066] In one embodiment, please refer to Figure 2 The housing assembly includes a first housing 11 and a second housing 12. The first housing 11 has a first interface 11a, and the second housing 12 has a second interface 12a and a first step 121. The first housing 11 and the second housing 12 are threaded or welded together, and the end of the first housing 11 is spaced apart from the first step 121. At least one of the mounting base 50, the snap-fit ​​member 30, and the first seal 40 is disposed within the space between the first housing 11 and the first step 121. Thus, the space formed by the spaced-apart arrangement between the end of the first housing 11 and the first step 121 is effectively utilized to accommodate key components such as the mounting base 50, the snap-fit ​​member 30, and the first seal 40, achieving a compact internal layout.

[0067] The first housing 11 and the second housing 12 can be connected by threads or by welding. When the first housing 11 and the second housing 12 are connected by threads, it facilitates the installation and disassembly of the housing assembly 10. When maintenance, repair, or replacement of internal components is required, the first housing 11 can be easily disassembled, and the mounting base 50, snap-fit ​​member 30, or first seal member 40 can be quickly replaced or installed. On the other hand, when the first housing 11 and the second housing 12 are welded, a higher connection strength can be achieved between the first housing 11 and the second housing 12, allowing the quick-connect connector to withstand greater tensile, compressive, and torque forces, thus improving stability during use.

[0068] Specifically, the statement that at least one of the mounting base 50, the snap-fit ​​member 30, and the first seal 40 is disposed within the space between the first housing 11 and the first step 121 means that only one of the mounting base 50, the snap-fit ​​member 30, and the first seal 40 may be disposed within the space between the first housing 11 and the first step 121, two of the mounting base 50, the snap-fit ​​member 30, and the first seal 40 may be disposed within the space between the first housing 11 and the first step 121, or all of the mounting base 50, the snap-fit ​​member 30, and the first seal 40 may be disposed within the space between the first housing 11 and the first step 121.

[0069] In one embodiment, please refer to Figure 2The quick-connect fitting includes a second seal 60, and the housing assembly 10 includes an interface end with a second port 12a for threaded connection with a pipeline. The second seal 60 is disposed on the outer periphery of the interface end. This further improves the sealing performance at the connection between the quick-connect fitting and the pipeline, effectively preventing media leakage from the second port 12a.

[0070] Specifically, the structure of the second seal 60 is not limited.

[0071] For example, the second seal 60 is a sealing ring.

[0072] The interface end has an external thread, and an installation area is provided on the side of the interface end opposite to the external thread. The second seal 60 is disposed in the installation area, and the cross-sectional area of ​​the second seal 60 is smaller than the cross-sectional area of ​​the external thread. Therefore, when the interface end is separated from the pipeline, the second seal 60 can be effectively prevented from disengaging from the quick-connect fitting.

[0073] In one embodiment, please refer to Figure 2 A portion of the outer surface of the pressing member 20 protrudes towards one side of the cavity wall to form a limiting protrusion 21, and a portion of the inner wall surface of the cavity protrudes inward to form a second step 111. The limiting protrusion 21 is located on the side of the second step 111 near the second interface 12a and abuts against the second step 111 to prevent the pressing member 20 from detaching from the cavity. The cooperative design of the limiting protrusion 21 and the second step 111 effectively limits the range of motion of the pressing member 20, preventing it from detaching from the cavity when subjected to unexpected external forces (such as collisions, excessive pulling, etc.). This ensures that the pressing member 20 is always in the normal working position, guaranteeing the reliability of the quick-connect connector unlocking operation, avoiding the connector from becoming unusable or requiring complex repairs and reassemblies due to the pressing member 20 falling off, and improving the overall stability of the connector.

[0074] Specifically, the limiting protrusion 21 refers to a component formed by protrusions on the outer surface of the pressing member 20 to restrict the pressing member 20 from disengaging from the receiving cavity.

[0075] The structural type of the limiting protrusion 21 is not limited.

[0076] For example, the limiting protrusion 21 can be a limiting ring formed by a circumferential protrusion on the outer surface of the pressing member 20.

[0077] For example, the limiting protrusion 21 can also be a limiting block formed by a protrusion of a portion of the outer surface of the pressing member 20.

[0078] The structural type of the second step 111 is not limited.

[0079] For example, the second step 111 can be an annular step formed by the circumferential protrusion of the inner wall of the receiving cavity.

[0080] For example, the second step 111 can also be a block-shaped step formed by a protrusion of a part of the inner wall of the receiving cavity, with the block-shaped step and the limiting block being set one-to-one.

[0081] In one embodiment, please refer to Figure 2 A portion of the outer surface of the pressing member protrudes to form an abutment portion, which is located on the side of the second step 111 opposite to the second interface 12a.

[0082] When the latching member 30 is in the unlocked state, the abutting part abuts against the housing assembly 10 to restrict the movement of the pressing member 20 toward the side closer to the second interface 12a. This prevents the pressing member 20 from abutting against the latching member 30, thus avoiding excessive displacement of the movable end 32 of the latching member 30 and potential damage to the latching member 30.

[0083] Specifically, the abutting part refers to the component on the pressing member 20 that abuts against the housing assembly 10 to restrict the movement of the pressing member 20 toward the side closer to the second interface 12a.

[0084] The abutting part is located on the side of the second step 111 away from the second interface 12a. When the pressing member 20 moves toward the side closer to the second interface 12a under the action of external force, the abutting part abuts against the housing assembly 10 to limit the maximum depth of the pressing member 20 entering the receiving cavity.

[0085] In one embodiment, please refer to Figure 2 The abutment portion includes a first abutment portion 22, which abuts against the end face of the housing assembly 10 having the first interface 11a when the latching member 30 is in the unlocked state. This restricts the position of the pressing member 20 when the latching member 30 is in the unlocked state, preventing the pressing member 20 from moving excessively toward the side closer to the second interface 12a.

[0086] Specifically, the structure of the first contact part 22 is not limited, as long as it can contact the end face of the housing assembly 10 that has the first interface 11a.

[0087] For example, the first abutting part 22 may be a circumferential protrusion of the outer surface of the pressing member 20 on the side opposite to the second interface 12a, forming an annular abutting part.

[0088] For example, the first abutting part 22 may also be a block-shaped abutting part formed by a portion of the pressing member 20 protruding from the side opposite to the second interface 12a.

[0089] The shape of the end face of the first contact portion 22 near the end of the housing assembly 10 that has the first interface 11a is not limited.

[0090] For example, the end face of the first abutting part 22 near the end of the housing assembly 10 with the first interface 11a is flat, so that the first abutting part 22 can provide a larger contact area when it abuts against the end face of the housing assembly 10, making the abutment more stable and reliable.

[0091] For example, the end face of the first contact portion 22 near the end of the housing assembly 10 that has the first interface 11a is arc-shaped or has a protruding shape.

[0092] In one embodiment, please refer to Figure 2 The abutment portion includes a second abutment portion 23; when the latching member 30 is in the unlocked state, the second abutment portion 23 abuts against the side of the second step 111 away from the limiting protrusion 21. Thus, the position of the pressing member 20 when the latching member 30 is in the unlocked state can be limited, preventing the pressing member 20 from moving excessively toward the side closer to the second interface 12a.

[0093] Specifically, the structure of the second abutment 23 is not limited, as long as it can abut against the side of the second step 111 that is away from the limiting protrusion 21.

[0094] For example, the second abutment 23 may be a circumferential protrusion of the outer surface of the pressing member 20 on the side opposite to the second step 111, forming an annular abutment.

[0095] For example, the second abutting part 23 may also be a block-shaped or strip-shaped abutting part formed by a portion of the pressing member 20 protruding from the side opposite to the second step 111.

[0096] In the description of this application, the references to terms such as "in one embodiment," "in some embodiments," "in a specific embodiment," or "exemplary," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of the different embodiments or examples.

[0097] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. A quick-connect fitting for connecting pipelines, characterized in that, include: A housing assembly having a receiving cavity that opens at opposite ends along an extending direction to form a first interface and a second interface, respectively; A pressing member is movably disposed at the first interface, and at least a portion of the pressing member is located within the receiving cavity; A snap-fit ​​component is movably disposed within the receiving cavity. The snap-fit ​​component has a locked state and an unlocked state. When the snap-fit ​​component is in the locked state, it is in a first position where it is snapped into and limited by the pipeline. Under the action of external force, the pressing component moves to abut against the snap-fit ​​component, so that the snap-fit ​​component is in a second position where it avoids the pipeline, and the snap-fit ​​component switches to the unlocked state. The snap-fit ​​component includes a fixed end and a movable end. The fixed end is disposed on one side of the cavity wall near the receiving cavity, and the movable end is used to snap-fit ​​and limit the connection with the pipeline. When the snap-fit ​​component is in the second position, the pressing component abuts against the movable end and moves along the fixed end to the movable end. The snap-fit ​​component is tilted toward the side away from the first interface.

2. The quick-connect coupling according to claim 1, characterized in that, The cross-sectional area of ​​the movable end is larger than that of the fixed end; and / or, the side of the movable end away from the fixed end is arc-shaped.

3. The quick-connect coupling according to claim 1, characterized in that, The quick-connect fitting includes a first seal and a mounting base located within the receiving cavity. A portion of the receiving cavity protrudes into the cavity to form a first step. The first seal is disposed on the first step. At least a portion of the snap-fit ​​member is disposed on the mounting base. The mounting base is disposed on the side of the first seal near the first interface to restrict the movement of the first seal.

4. The quick-connect coupling according to claim 3, characterized in that, The housing assembly includes a first housing and a second housing. The first housing has the first interface, and the second housing has the second interface and the first step. The first housing and the second housing are threaded or welded together, and the end of the first housing is spaced apart from the first step. At least one of the mounting base, the snap-fit ​​member, and the first seal is disposed in the space between the first housing and the first step.

5. The quick-connect coupling according to any one of claims 1-4, characterized in that, The quick-connect fitting includes a second seal, and the housing assembly includes an interface end having the second interface for threaded connection with the pipeline, the second seal being disposed on the outer periphery of the interface end.

6. The quick-connect coupling according to any one of claims 1-4, characterized in that, A portion of the outer surface of the pressing member protrudes toward one side of the cavity wall to form a limiting protrusion, and a portion of the inner wall surface of the cavity protrudes toward the cavity to form a second step. The limiting protrusion is located on the side of the second step near the second interface and abuts against the second step to restrict the pressing member from leaving the cavity.

7. The quick-connect coupling according to claim 6, characterized in that, A portion of the outer surface of the pressing member protrudes to form an abutment portion, which is located on the side of the second step opposite to the second interface; When the latch is in the unlocked state, the abutment portion abuts against the housing assembly to restrict the movement of the press member toward the side closer to the second interface.

8. The quick-connect coupling according to claim 7, characterized in that, The abutting portion includes a first abutting portion, which abuts against the end face of the housing assembly having the first interface when the snap-fit ​​is in the unlocked state.

9. The quick-connect coupling according to claim 7, characterized in that, The abutting part includes a second abutting part; when the latching member is in the unlocked state, the second abutting part abuts against the side of the second step opposite to the limiting protrusion.

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