Pipe fitting quick connection assembly and quick connection structure

Abstract

According to the pipe fitting quick-connection assembly and the quick-connection structure, the quick-connection assembly is connected with a quick-connection connector, and the quick-connection assembly comprises a quick-connection body, a quick-connection shell, a limiting pin column and a spring; at least two inclined guide grooves which are circumferentially arranged at intervals are formed in the side wall of the quick connection main body, the radial inner sides of the inclined guide grooves are communicated with the main body insertion hole, the upper ends of the inclined guide grooves extend inwards in an inclined mode and are partially located in the main body insertion hole, and the lower ends of the inclined guide grooves are located in the side wall; the quick-connection shell sleeves the outer side of the quick-connection main body; the middle of the limiting pin column is arranged in the inclined guide groove in a penetrating mode, the two ends of the limiting pin column are connected to the quick-connection shell, and when the quick-connection shell and the quick-connection body are axially separated or combined, the middle of the limiting pin column is driven to obliquely move downwards or upwards in the inclined guide groove, and the annular clamping groove of the quick-connection connector movably faces the upper end of the inclined guide groove and is used for containing the limiting pin column. When the annular blocking part of the quick connector is movably located in the inclined guide groove, the inclined movement of the limiting pin column is limited; and the spring is used for providing elastic force for relatively combining the quick-connection main body and the quick-connection shell. The device has the advantages of simple structure and small size.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe joints, in particular to a pipe quick-connect assembly and a quick-connect structure. Background Art

[0002] A quick connector is a tool-free connector that allows pipes to be connected or disconnected. In the bathroom industry, where pipe installation and connection are often necessary, the use of quick-disconnect connectors for ease of use and installation has become a common practice.

[0003] Various quick-connect structures are currently available on the market, such as the self-locking quick connector disclosed in Chinese Patent CN 217208273 U. This solution achieves connection through the engagement of a buckle and a claw. However, when the water pressure is too high, the claw can easily disengage, causing the pipe to separate. Another example is the quick-connect connector and water supply device disclosed in Chinese Patent CN 118188914 A. In this solution, a limiting boss contacts a ball and restricts the movement of the plug in the direction of disengagement from the socket. However, the installation of multiple balls is cumbersome and not conducive to product assembly and production.

[0004] Moreover, the structures of the quick-connect joints of the aforementioned prior art solutions are relatively complex, and they are large in size and radial width, which is not conducive to use in certain scenarios. For example, for the installation of the mounting base joint of the kitchen pull-out faucet, the mounting base joint usually needs to be inserted into the mounting hole on the countertop, and the hot water pipe, cold water pipe, pull-out pipe and other pipe fittings passing through the inside of the mounting base joint are also passed through the mounting holes at the same time. During installation, it is necessary to put the mounting nuts on each pipe fitting and then move them to the mounting base joint under the countertop for threaded connection; therefore, the ends of the pipe fittings cannot use quick-connect joints that are too large, otherwise the mounting nuts cannot be put on the pipe fittings for movement, resulting in installation difficulties and inability to perform installation operations. Utility Model Content

[0005] The purpose of the utility model is to provide a pipe quick-connect assembly, which has the advantages of simple structure, convenient assembly, reliable use and small size.

[0006] In order to achieve the above objectives, the solution of the present invention is:

[0007] A pipe quick-connect assembly is used to connect with a quick-connect joint, and the pipe quick-connect assembly includes a quick-connect body, a quick-connect shell, a limit pin and a spring;

[0008] The quick-connect connector includes a plug-in portion, an annular groove is concavely formed on the plug-in portion, and the lower edge of the annular groove is an annular stop portion;

[0009] The quick-connect body has a main body plug hole that is connected up and down, and the main body plug hole is used for the axial insertion of the plug part;

[0010] The side wall of the quick-connecting main body is provided with at least two circumferentially spaced inclined guide grooves, the inner side of the inclined guide grooves is communicated with the main body insertion hole, the upper end of the inclined guide groove extends inwardly and partially locates in the main body insertion hole, and the lower end of the inclined guide groove locates in the side wall of the quick-connecting main body.

[0011] The quick-connecting shell is axially movably sleeved on the outer side of the quick-connecting main body, the middle part of the limiting pin is sleeved in the inclined guide groove, and the two ends of the limiting pin are connected to the quick-connecting shell; when the quick-connecting shell and the quick-connecting main body are axially separated or combined, the middle part of the limiting pin is moved obliquely downward or upward in the inclined guide groove; when the insertion part of the quick-connecting joint is axially moved in the main body insertion hole, the annular clamping groove is located at the upper end of the inclined guide groove to accommodate the limiting pin, and the annular blocking part is located in the inclined guide groove to limit the oblique movement of the limiting pin.

[0012] The spring is arranged between the quick-connecting shell and the quick-connecting main body to provide elastic force for relatively combining the quick-connecting shell and the quick-connecting main body.

[0013] Further, the two sides of the inclined guide groove are through the side wall of the quick-connecting main body, and the horizontal two ends of the limiting pin extend out of the openings of the two sides of the inclined guide groove.

[0014] The quick-connecting shell has a shell through hole which is communicated between the upper and lower sides, the main body part of the quick-connecting main body is axially movably sleeved in the shell through hole, the side wall of the shell through hole is respectively provided with a clamping groove corresponding to the two ends of each limiting pin, the end part of the limiting pin is inserted in the clamping groove, and when the quick-connecting shell moves relative to the quick-connecting main body, the clamping groove drives the limiting pin to move obliquely along the inclined guide groove.

[0015] Further, the lower end of the spring is clamped in the spring groove arranged on the lower side of the quick-connecting main body, and the upper end of the spring abuts against the blocking rim arranged in the shell through hole of the quick-connecting shell; the quick-connecting shell is sleeved on the main body part of the quick-connecting main body from the lower side to the upper side, and the top part of the quick-connecting main body protrudes radially to have a blocking ring to block and limit the quick-connecting shell.

[0016] Further, the outer peripheral wall of the main body part of the quick-connecting main body protrudes to have a number of reinforcing protrusions corresponding to the number of inclined guide grooves, each inclined guide groove is formed at the position of the reinforcing protrusion, the inclined guide groove penetrates the two side walls of the reinforcing protrusion, and the lower end of the inclined guide groove locates in the reinforcing protrusion; the quick-connecting shell is provided with a yielding guide groove corresponding to the reinforcing protrusion, and the top part of the yielding guide groove is communicated with the top surface of the quick-connecting shell.

[0017] Further, the outer diameter of the quick-connecting shell is the same as the maximum outer diameter of the quick-connecting main body.

[0018] Further, the inner edge of the top surface of the quick-connecting shell is provided with a notch axially corresponding to the position of each clamping groove, each notch is obliquely downward communicated with the shell through hole, and the opposite side of each adjacent two notches has a relatively extended inclined wall and a blocking wall respectively.

[0019] Furthermore, the outer peripheral wall of the quick-connect body is provided with two symmetrically arranged slide rails, and the shell through hole of the quick-connect shell is provided with a slide groove for the slide rails to slide into.

[0020] Furthermore, the quick-connect body includes a main body portion and a main body connecting portion arranged upper and lower; the quick-connect shell is sleeved on the main body portion of the quick-connect body, and the inclined guide groove is arranged on the main body portion; the main body connecting portion extends downward from the quick-connect shell for connection with the pipe fitting.

[0021] Furthermore, the quick connector has a water hole connected to the upper and lower parts; the upper end of the plug-in part of the quick connector is also provided with a connector connection part for connecting the pipe fitting; the plug-in part is also provided with at least one annular groove, and a sealing ring is installed on the annular groove; the annular groove is provided at the lower part of the plug-in part, and the annular groove is provided in the middle part.

[0022] The utility model also provides a pipe quick-connect structure, comprising the quick-connect joint and the pipe quick-connect assembly.

[0023] The pipe quick-connect structure of the present invention can realize the rapid disassembly and assembly of the quick-connect joint through the assembly and cooperation of the quick-connect body, the limiting pin, the spring and the quick-connect shell, and has a simple structure. In addition, the radial direction of the pipe quick-connect assembly is only the wall thickness of the quick-connect body and the quick-connect shell, so the volume can be made relatively small, which is suitable for the installation of pull-out faucets and is also suitable for installation operations in narrow and small areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional diagram of the pipe quick-connect structure according to an embodiment of the present utility model;

[0025] Figure 2 This is an exploded view of the pipe quick-connect structure according to an embodiment of the present utility model;

[0026] Figure 3 This is a locking diagram of the quick-connect structure for pipe fittings according to an embodiment of the utility model;

[0027] Figure 4 This is a schematic diagram of the disassembly process of the pipe quick-connect structure according to an embodiment of the utility model (I);

[0028] Figure 5 This is a schematic diagram of the disassembly process of the pipe quick-connect structure according to an embodiment of the utility model (II);

[0029] Figure 6 This is a schematic diagram of the separation state of the pipe quick-connect structure according to an embodiment of the utility model;

[0030] Figure 7 This is a schematic diagram of the assembly of the pipe quick-connect structure according to an embodiment of the present utility model.

[0031] Label description: quick connector 1, connector connecting part 11, plug-in part 12, annular clamping groove 121, annular stop 1211, ring groove 122, water hole 13, quick connector main body 2, main body 21, spring groove 211, main body connecting part 22, main body insertion hole 23, inclined guide groove 24, upper end 241 of inclined guide groove, lower end 242 of inclined guide groove, opening 243, stop ring 25, reinforcing protrusion 26, sliding rail 27, quick connector shell 3, shell through hole 31, clamping groove 32, stop rim 33, give way guide groove 34, sliding groove 35, notch 36, inclined wall 361, stop wall 362, sealing ring 4, limit pin 5, spring 6. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] As Figures 1 to 7 shown, the present embodiment provides a pipe quick connector assembly and a pipe quick connector structure, which comprises a quick connector 1 and a pipe quick connector assembly, and the pipe quick connector assembly comprises a quick connector main body 2, a quick connector shell 3, a sealing ring 4, a limit pin 5 and a spring 6.

[0034] As Figure 2 shown, the quick connector 1 comprises an upper and lower connector connecting part 11 and a plug-in part 12, and the quick connector 1 has a water hole 13 inside which is connected vertically; the connector connecting part 11 is used to connect with a pipe (not shown in the figure); the plug-in part 12 is concave and has an annular clamping groove 121 and at least one ring groove 122, the lower edge of the annular clamping groove 121 is an annular stop 1211, and the ring groove 122 is provided with a sealing ring 4, and the plug-in part 12 of the present embodiment is provided with two ring grooves 122 at the lower part and the annular clamping groove 121 at the middle part.

[0035] The quick connector main body 2 comprises an upper and lower main body 21 and a main body connecting part 22, and the quick connector main body 2 has a main body insertion hole 23 inside which is connected vertically; the sidewall of the quick connector main body 2 is provided with at least two circumferentially uniformly spaced inclined guide grooves 24, the inclined guide grooves 24 extend obliquely upward and downward, the inner side of the inclined guide grooves 24 in the radial direction is connected to the main body insertion hole 23, the upper end of the inclined guide grooves 24 extends obliquely inward and partially into the main body insertion hole 23, the lower end of the inclined guide grooves 24 is located in the sidewall of the quick connector main body 21, and the two sides of the inclined guide grooves 24 in the tangential direction pass through the sidewall of the main body 21 of the quick connector main body 2.

[0036] Referring to Figure 3 and Figure 6The inclined guide grooves 24 in the embodiment are taken as an example of two circumferential intervals of 180 degrees. Specifically, two opposite inclined guide grooves 24 are arranged in the side wall of the main body part 21 of the quick connector body 2. The two inclined guide grooves 24 are spaced apart left and right and both pass through the side wall of the main body part 21 in the tangential direction of the main body part 21. The upper ends 241 of the two inclined guide grooves are close to each other and communicate with the main body insertion hole 23. The lower ends 242 of the two inclined guide grooves are away from each other.

[0037] The quick connector shell 3 is axially movably sleeved on the outside of the quick connector body 2. The middle part of the limiting pin 5 is arranged in the inclined guide groove 24, and the two ends are connected to the quick connector shell 3. When the quick connector shell 3 and the quick connector body 2 are axially separated or combined, the middle part of the limiting pin 5 is moved obliquely downward or upward in the inclined guide groove 24.

[0038] When the insertion part 12 of the quick connector 12 is axially moved in the main body insertion hole 23, the annular clamping groove 121 movably locates on the upper end of the inclined guide groove 24 to accommodate the limiting pin 5. The annular blocking part 1211 movably locates in the inclined guide groove 24 to limit the oblique movement of the limiting pin 5. The sealing ring 4 at the lower part of the insertion part 12 can be tightly fitted to the side wall of the main body insertion hole 23 to achieve waterproof sealing.

[0039] Specifically, the quick connector shell 3 can have a shell through hole 31 that is connected to the upper and lower parts. The main body part 21 of the quick connector body 2 can be movably arranged in the shell through hole 31. The main body connecting part 22 can extend downward from the quick connector shell 3 to facilitate connection with the pipe. The side wall of the shell through hole 31 is provided with a clamping groove 32 corresponding to the front and rear ends of the two limiting pins 5. The clamping groove 32 is used for inserting the end part of the limiting pin 5. When the quick connector shell 3 moves downward relative to the quick connector body 2, the clamping groove 32 can drive the limiting pin 5 to move obliquely downward along the inclined guide groove 24. Similarly, when the quick connector body 2 moves upward relative to the quick connector shell 3, the inclined guide groove 24 can be driven to move upward, so that the limiting pin 5 moves to the lower end of the inclined guide groove 24.

[0040] The spring 6 is arranged between the two to provide the elastic force for the relative combination of the quick connector shell 3 and the quick connector body 2, that is, the spring 6 drives the quick connector shell 3 to move upward and the quick connector body 2 to move downward, so that the limiting pin 5 is maintained at the upper end 241 of the inclined guide groove. When the plug-in part 12 of the quick connector 1 is inserted into the body insertion hole 23, the limiting pin 5 at the upper end 241 of the inclined guide groove can be clamped into the annular clamping groove 121 and limited by the annular blocking part 1211 in the inclined guide groove 24, and maintained in position under the action of the spring 6 to achieve the clamping locking of the quick connector 1. When the locking needs to be released, the plug-in part 12 of the quick connector plug 1 is continuously inserted into the body insertion hole 23, the annular blocking part 1211 moves axially downward and exits the inclined guide groove 24 to release the limiting of the limiting pin 5, and then the quick connector shell 3 is controlled to move downward and the quick connector body 2 is controlled to move upward to compress the spring 6 and drive the limiting pin 5 to move to the lower end 242 of the inclined guide groove, so that the limiting pin 5 is released from the limiting of the annular clamping groove 121 and the annular blocking part 1211, and the quick connector 1 can be freely pulled out.

[0041] In the embodiment, the lower end of the spring 6 can be clamped in the spring groove 211 arranged at the lower part of the body part 21 of the quick connector body 2, and the upper end of the spring 6 can abut against the blocking rim 33 arranged in the shell through hole 31 of the quick connector shell 3 to facilitate the assembly operation of the product.

[0042] In the embodiment, the quick connector shell 3 is sleeved on the body part 21 of the quick connector body 2 from bottom to top, and the top of the quick connector body 2 can radially protrude the blocking ring 25 to block and limit the quick connector shell 3 to facilitate the assembly of the spring 6.

[0043] The outer peripheral wall of the body part 21 of the quick connector body 2 can protrude two symmetrically arranged reinforcing protrusions 26, the upper end of the reinforcing protrusion 26 can be connected to the blocking ring 25, and the lower end extends to the middle part of the body part 21. Two inclined guide grooves 24 are respectively formed at the positions of the reinforcing protrusions 26, and the inclined guide grooves 24 pass through the front and rear walls of the reinforcing protrusions 26. The lower end 242 of the inclined guide groove can be located in the reinforcing protrusion 26. The limiting pin 5 of the embodiment can be made of metal, and the quick connector body 2 can be made of plastic. Thus, by arranging the reinforcing protrusion 26, the structural strength of the position of the inclined guide groove 24 can be increased, so that the limiting pin 5 can reliably and stably move in the inclined guide groove 24, and the quick connector body 2 is not easy to be damaged, and the service life of the product can be improved.

[0044] Meanwhile, the quick connector shell 3 can be provided with a let-in guide groove 34 corresponding to the reinforcing protrusion 26. The top of the let-in guide groove 34 communicates with the top surface of the quick connector shell 3. The let-in guide groove 34 is used for sliding connection of the reinforcing protrusion 26 and has a guiding effect. Meanwhile, the clamping groove 32 is located on both sides of the let-in guide groove 34.

[0045] As Figure 2In order to further improve the stability of the assembled fast connection main body 2 and the fast connection shell 3, two symmetrical sliding rails 27 can be arranged on the outer peripheral wall of the main body part 21 of the fast connection main body 2. In the embodiment, the two sliding rails 27 are respectively located between the two reinforcing protrusions 26, and the four are distributed at an interval of 90 degrees in the circumferential direction. Correspondingly, the fast connection shell 3 is provided with a sliding groove 35 for sliding connection of the sliding rail 27 in the shell through hole 31.

[0046] In the embodiment, the fast connection main body 2, the limiting pin 5, the spring 6 and the fast connection shell 3 are assembled and matched to realize the quick disassembly and assembly operation of the fast connection joint 1, and the structure is simple. The wall thickness of only two parts of the fast connection main body 2 and the fast connection shell 3 in the radial direction of the pipe fast connection assembly, so the volume can be made smaller, which can be suitable for installation of pull-out faucets and installation operation in narrow small area space.

[0047] In order to further reduce the volume, the outer diameter of the fast connection shell 3 in the embodiment is the same as the distance between the two reinforcing protrusions 26 of the fast connection main body 2, and is also the same as the outer diameter of the stop ring 25, that is, the outer diameter of the fast connection shell 3 is the same as the maximum outer diameter of the fast connection main body 2. Thus, the overall outer diameter of the assembled fast connection shell 3 and the fast connection main body 2 is consistent, the shape is neat and cylindrical, and there is no additional protruding structure, which can facilitate the installation of the pull-out faucet.

[0048] Correspondingly, the yielding guide groove 34 is radially communicated with the shell through hole 31 and the outside, and the clamping groove 32 is also communicated with the shell through hole 31 and the outside, which facilitates the clamping of the limiting pin 5.

[0049] As shown in the drawings, Figure 7 In the embodiment, the top surface of the fast connection shell 3 is provided with a notch 36 corresponding to the position of each clamping groove 32 in the axial direction. Each notch 36 is inclined downward and communicated with the shell through hole 31, and the opposite side of the two notches 36 adjacent to each other on the same side has a relatively extended inclined wall 361, and the opposite side has a stop wall 362.

[0050] Thus, the notch 36 can assist the quick and convenient installation of the limiting pin 5 between the fast connection main body 2 and the fast connection shell 3.

[0051] Specifically, when assembling, the quick-connection shell 3 and the quick-connection body 2 can be sleeved first, then the spring 6 is installed, and then the quick-connection body 2 and the quick-connection shell 3 are separated upward and downward by extruding the spring 6, so that the top surface of the quick-connection shell 3 is lowered to the position flush with the upper end 241 of the inclined guide groove, at this time each notch 36 is respectively located at the front and rear side openings 243 of the upper end 241 of each inclined guide groove, then the two limiting pin columns 5 are respectively inserted into the left and right inclined guide grooves 24 along the front and rear directions, the quick-connection shell 3 is loosened, and under the action of the spring 6, the front and rear end portions of each limiting pin column 5 can be respectively clamped at the corresponding notch 36, and the middle portion of the limiting pin column 5 can be limited between the quick-connection shell 3 and the quick-connection body 2, and the two end faces of the limiting pin column 5 are limited between the blocking walls 362 of the two notches 36, and cannot fall out of the inclined guide groove 24, which facilitates subsequent assembly; then the quick-connection shell 3 is lifted, and since the quick-connection shell 3 can be made of plastic and has a certain elasticity, the position between the clamping groove 32 and the notch 36 can expand outward with the upward movement of the quick-connection shell 3, so that the two end portions of the limiting pin column 5 can be clamped into the shell through hole 31 from the notch 36 along the inclined wall 361 and then clamped into the corresponding clamping groove 32, thereby realizing the assembly of the product.

[0052] In summary, the pipe quick-connection structure of the embodiment is used by connecting the joint connecting portion 11 of the quick-connection joint 1 and the body connecting portion 22 of the quick-connection body 2 with two pipe fittings respectively, and is installed by Figure 3 lowering and inserting the plug-in portion 12 of the quick-connection joint 1 into the body insertion hole 23 of the quick-connection body 2, the annular blocking portion 1211 of the plug-in portion 12 first enters the inclined guide groove 24, then moves downward and makes way for the limiting pin column 5, and the quick-connection body 2 and the quick-connection shell 3 are relatively displaced and displace the spring 6, until the plug-in portion 12 is completely inserted into the body insertion hole 23, the annular blocking portion 1211 exits the inclined guide groove 24 at this time, and the annular clamping groove 121 is located at the upper end of the inclined guide groove 24, the spring 6 can drive the limiting pin column 5 to freely rebound to the upper end of the inclined guide groove 24 and at the same time partially contain the annular blocking portion 1211 above the annular clamping groove 121, thereby realizing quick-connection installation; when the pipe fittings are used subsequently, if the water in the pipe fittings under water pressure makes the quick-connection joint 1 have a tendency to move upward, or if the quick-connection joint 1 is directly forced to pull out, the annular blocking portion 1211 of the plug-in portion 12 will move upward into the inclined guide groove 24 and be limited by the limiting pin column 5 and cannot be pulled out, thereby realizing the locking of the two pipe fittings.

[0053] When disassembling, as Figure 4, need to first move the quick connector 1 down, drive the annular stop 1211 down and exit the inclined guide groove 24, release the limiting of the limiting pin 5, then control the quick connector main body 2 and the quick connector shell 3 to separate from each other, make the limiting pin 5 from the upper end of the inclined guide groove 24 to the lower end, so that the limiting pin 5 is separated from the annular clamping groove 121 and contacts the limiting of the annular stop 1211, and the quick connector 1 is pulled out upward, at this time the plug-in part 12 can be freely pulled out, that is, the unlocking and separation of the two pipe fittings can be conveniently and quickly realized.

[0054] The preferred embodiments of the present application are described above, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical scheme under the idea of the present application belongs to the protection scope of the present application. It should be pointed out that, for ordinary skilled in the art, equivalent changes and modifications without departing from the principles of the present application, all should still belong to the protection scope of the present application.

[0055] In the description of the embodiments of the present application, it should be understood that the indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly used when the product of the application is used, or the orientation or position relationship commonly understood by those skilled in the art, only for the convenience of describing the application and simplifying the description, and is not indicative or implied that the indicated device or element must have a specific orientation, structure and operation, therefore it cannot be understood as a limitation of the present application. In the description of the present application, the meaning of "a plurality of" and "several" is two or more than two, unless otherwise specifically limited.

Claims

1. A pipe quick-connect assembly for connecting with a quick-connect connector, characterized by: The pipe quick-connect assembly includes a quick-connect body, a quick-connect shell, a limiting pin and a spring; The quick-connect connector includes a plug-in portion, an annular groove is concavely formed on the plug-in portion, and the lower edge of the annular groove is an annular stop portion; The quick-connect body has a main body plug hole that is connected up and down, and the main body plug hole is used for the axial insertion of the plug part; At least two circumferentially spaced oblique guide grooves are provided in the side wall of the quick-connect body, wherein the radial inner sides of the oblique guide grooves are connected to the main body insertion hole, and the upper ends of the oblique guide grooves extend inwardly and are partially located in the main body insertion hole, while the lower ends of the oblique guide grooves are located in the side wall of the quick-connect body; The quick-connect housing can be axially movably sleeved on the outer side of the quick-connect body; the middle portion of the limit pin is arranged in the oblique guide groove and the two ends are connected to the quick-connect housing. When the quick-connect housing and the quick-connect body are axially separated or combined, the middle portion of the limit pin is driven to move obliquely downward or upward in the oblique guide groove. When the plug-in portion of the quick-connect connector moves axially in the main body socket, the annular groove is movably aligned with the upper end of the oblique guide groove to accommodate the limit pin, and the annular stop portion is movably located in the oblique guide groove to limit the oblique movement of the limit pin. The spring is arranged between the quick-connect shell and the quick-connect body, and is used for providing elastic force to make the quick-connect shell and the quick-connect body relatively connected.

2. A pipe quick-connect assembly according to claim 1, characterized in that: The two sides of the oblique guide groove tangentially pass through the side walls of the quick-connect body, and the horizontal ends of the limit pin extend out of the openings on the two sides of the oblique guide groove tangentially; The quick-connect shell has a shell through hole connected to the upper and lower parts, and the quick-connect body has a main body that can be axially moved up and down and inserted into the shell through hole. The side walls of the shell through hole are respectively provided with card slots corresponding to the two ends of each limit pin, and the card slots are used for inserting the ends of the limit pins. When the quick-connect shell moves relative to the quick-connect body, the limit pins are driven to move obliquely along the oblique guide groove through the card slots.

3. The pipe quick-connect assembly according to claim 2, characterized in that: The lower end of the spring is clamped in the spring groove provided on the lower side of the quick-connect body, and the upper end of the spring presses against the retaining edge provided in the shell through hole of the quick-connect shell; the quick-connect shell is sleeved on the main body of the quick-connect body from bottom to top, and a retaining ring is radially protruded from the top of the quick-connect body to block and limit the quick-connect shell.

4. The pipe quick-connect assembly according to claim 2, characterized in that: The outer peripheral wall of the main body of the quick-connect body is protruded with a number of reinforcing protrusions corresponding to the number of oblique guide grooves, and each oblique guide groove is formed at the position where the reinforcing protrusion is located. The oblique guide groove passes through the two side walls of the reinforcing protrusion, and the lower end of the oblique guide groove is located inside the reinforcing protrusion; the quick-connect shell is provided with a yield guide groove corresponding to the reinforcing protrusion, and the top of the yield guide groove is connected to the top surface of the quick-connect shell.

5. A pipe quick-connect assembly according to claim 3 or 4, characterized in that: The outer diameter of the quick-connect housing is the same as the maximum outer diameter of the quick-connect body.

6. The pipe quick-connect assembly according to claim 2, characterized in that: The inner edge of the top surface of the quick-connect housing is axially provided with a notch corresponding to the position of each slot, each notch is obliquely downwardly connected to the through hole of the housing, and the opposite sides of two adjacent notches respectively have relatively extended oblique walls, and the opposite sides have a retaining wall.

7. The pipe quick-connect assembly according to claim 2, characterized in that: The outer peripheral wall of the quick-connect body is provided with two symmetrically arranged slide rails, and the shell through hole of the quick-connect shell is provided with a slide groove for sliding connection of the slide rails.

8. The pipe quick-connect assembly according to claim 1, characterized in that: The quick-connect body includes a main body portion and a main body connecting portion arranged up and down; the quick-connect shell is sleeved on the main body portion of the quick-connect body, and the oblique guide groove is arranged on the main body portion; the main body connecting portion extends downward from the quick-connect shell for connecting to the pipe fitting.

9. The pipe quick-connect assembly according to claim 1, characterized in that: The quick connector has a water hole connected to the upper and lower parts; the upper end of the plug-in part of the quick connector is also provided with a connector connection part for connecting pipes; the plug-in part is also provided with at least one annular groove, and a sealing ring is installed on the annular groove; the annular groove is provided at the lower part of the plug-in part, and the annular clamping groove is provided in the middle part.

10. A pipe quick-connect structure, characterized in that: The quick-connect assembly comprises the quick-connect connector and the pipe quick-connect assembly according to any one of claims 1-4 and 6-9.

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