Leak-proof hose quick connector, two-way quick connector and multi-way quick connector

Abstract

The utility model discloses a leak-proof hose quick connector, a two-way quick connector and a multi-way quick connector. The leak-proof hose quick connector comprises a connecting pipe, a piston piece, a reset spring, a sealing ring and an external connection assembly. A piston cavity and a connecting cavity which are communicated with each other are formed in the connecting pipe; a mounting step is formed at one end, close to the piston cavity, of the connecting cavity; the sealing ring is fixed to the mounting step of the connecting cavity, the inner diameter of the sealing ring is smaller than that of the piston cavity, the external connecting assembly is mounted in the connecting cavity and limits the sealing ring, and the external connecting assembly is used for fixing the hose in the connecting cavity; the piston piece comprises a spring connecting part, a sealing part and a hose connecting part; the piston piece is slidably installed in the piston cavity, the sealing part can be attached to the sealing ring, and the hose connecting part is used for abutting against a hose; the reset spring is installed in the piston cavity, one end of the reset spring is fixedly connected with the spring connecting part, the sealing part of the piston piece can be attached to the sealing ring through the reset spring, the piston cavity and the connecting cavity are isolated, and the hose connecting part is arranged in the connecting cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering components, in particular to a pipe joint. Background Art

[0002] Quick connectors are mainly used to connect gas sources and hoses, or act as sealing adapters between multiple hoses. Existing hose quick connectors can be quickly plugged in and out, but the gas source needs to be turned off before the hose is detached from the quick connector. Otherwise, directly unplugging the hose will cause gas leakage at the quick connector, resulting in waste. Utility Model Content

[0003] In view of this, the utility model provides a leakage-proof hose quick connector, a two-way quick connector and a multi-way quick connector, which are used to solve the problem that the quick connectors in the prior art are prone to leakage during the plugging and unplugging process.

[0004] To achieve one or part or all of the above purposes or other purposes, the utility model provides: an anti-leakage hose quick connector, including: a connecting pipe, a piston, a return spring, a sealing ring and an external component;

[0005] The connecting tube is provided with a piston cavity and a connecting cavity which are interconnected, the inner diameter of the piston cavity is smaller than the inner diameter of the connecting cavity, the connecting cavity forms a mounting step at one end close to the piston cavity, and the end of the piston cavity away from the connecting cavity is used for connecting to a gas source;

[0006] The sealing ring is fixed at the installation step of the connecting cavity, and the inner diameter of the sealing ring is smaller than the inner diameter of the piston cavity. The external component is installed in the connecting cavity and limits the sealing ring. The external component is used to fix the hose in the connecting cavity;

[0007] The piston member includes a spring connection part, a sealing part and a hose connection part; the piston member is slidably mounted in the piston cavity, the sealing part can be fitted with a sealing ring, the hose connection part can be placed in the connection cavity, and the hose connection part is used to abut against the hose;

[0008] The return spring is installed in the piston cavity, and one end of the return spring is fixedly connected to the spring connecting part. The return spring can make the sealing part of the piston member fit with the sealing ring to isolate the piston cavity and the connecting cavity, and the hose connecting part is placed in the connecting cavity.

[0009] Preferably, the sealing portion is a circular frustum, the minimum outer diameter of the sealing portion is larger than the inner diameter of the sealing ring, the maximum outer diameter of the sealing portion is smaller than the inner diameter of the sealing ring, and the maximum outer diameter of the sealing portion is smaller than the inner diameter of the piston chamber.

[0010] Preferably, the hose connecting portion comprises at least three connecting protrusions, and the at least three connecting protrusions are evenly distributed on the end wall of the sealing portion close to the connecting cavity, and the outer diameter of the largest circle enclosed by the at least three connecting protrusions is smaller than the maximum outer diameter of the sealing portion.

[0011] Preferably, the spring connecting portion is a protruding structure provided on the end wall of the sealing portion away from the connecting cavity, the cross section of the spring connecting portion is a "human" shape, and the maximum outer diameter of the spring connecting portion is less than or equal to the inner diameter of the piston cavity.

[0012] Preferably, a connecting notch is provided at the outer peripheral edge of the spring connecting portion, and the connecting notch is used to connect one end of the return spring.

[0013] Preferably, the external assembly comprises a metal snap ring, a fixing ring seat and a release cap;

[0014] The metal clamp ring is placed in the connecting cavity, and a plurality of claws are provided on the metal clamp ring, the diameter of the smallest circle enclosed by the plurality of claws is smaller than the inner diameter of the sealing ring, and the plurality of claws are used to bite and fix the hose;

[0015] The fixed ring seat is installed in the connecting cavity, and the fixed ring seat fixes the metal clamp ring to the end wall of the sealing ring;

[0016] The release cap is hollow, and is coaxially slidably connected to the fixed ring seat. One end of the release cap can abut against a plurality of claws and bend the claws toward the piston cavity. The other end of the release cap forms an end cover and is placed outside the connecting cavity.

[0017] Preferably, a limiting ring is provided at one end of the release cap, and a limiting step cooperating with the limiting ring is provided on the outer wall of the fixing ring seat.

[0018] Preferably, a plurality of the sealing rings are provided, and the plurality of sealing rings are superimposed on the installation step of the connecting cavity.

[0019] A two-way quick connector comprises two of the above-mentioned anti-leakage hose quick connectors, the two anti-leakage hose quick connectors are symmetrically arranged, and the connecting pipes of the two anti-leakage hose quick connectors are coaxially connected at one end of the piston cavity.

[0020] A multi-directional quick connector comprises at least three of the above-mentioned leak-proof hose quick connectors, wherein the at least three leak-proof hose quick connectors are evenly distributed around the circumference, and the connecting pipes of the at least three leak-proof hose quick connectors are interconnected at one end of their piston cavities.

[0021] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0022] The leak-proof hose quick connector realizes normal isolation of the piston chamber and the connecting chamber by arranging a piston chamber and a connecting chamber with different inner diameters in a connecting tube, and by a reset spring, the piston member is in a position where the sealing portion and the sealing ring are tightly fitted under normal conditions, and the piston chamber and the connecting chamber are connected by the insertion of the hose, so that the piston member compresses the reset spring and the sealing portion and the sealing ring are separated from each other, thereby connecting the piston chamber and the connecting chamber, and then sending the gas from the piston chamber into the hose, and when the hose is pulled out, the sealing portion quickly fits the sealing ring to isolate the piston chamber from the connecting chamber, thereby achieving the leak-proof effect of the leak-proof hose quick connector, solving the cumbersome problem that the traditional hose connector still needs to be blocked with the help of other tools to prevent leakage after the hose is pulled out, and the gas leakage problem that occurs in this process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] in:

[0025] Figure 1 This is a schematic diagram of the overall structure of the anti-leakage hose quick connector proposed by the utility model;

[0026] Figure 2 This is an exploded view of the anti-leakage hose quick connector proposed by the utility model;

[0027] Figure 3 This is a structural schematic diagram of the piston member of the anti-leakage hose quick connector proposed by the utility model;

[0028] Figure 4 This is a structural cross-sectional view of the sealing part and the sealing ring proposed by the utility model when they are fitted together;

[0029] Figure 5 This is a structural cross-sectional view of the sealing portion and the sealing ring proposed by the utility model when they are not in contact with each other;

[0030] Figure 6 This is a cross-sectional view of the overall structure of the two-way quick connector proposed by the utility model;

[0031] Figure 7 This is a cross-sectional view of the overall structure of the multi-directional quick connector proposed by the utility model.

[0032] Reference numerals:

[0033] 1 connecting pipe, 10 piston chamber, 11 connecting chamber, 2 piston member, 20 spring connecting part, 200 connecting notch, 21 sealing part, 22 hose connecting part, 220 connecting protrusion, 3 return spring, 4 sealing ring, 5 external component, 50 metal clamping ring, 501 clamping claw, 51 fixing ring seat, 510 limiting step, 52 release cap, 520 limiting ring. DETAILED DESCRIPTION

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0035] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0036] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0037] like Figure 1-5 The example shown is an embodiment provided by the utility model.

[0038] The utility model embodiment provides a leakage-proof hose quick connector, including: a connecting pipe 1, a piston member 2, a return spring 3, a sealing ring 4 and an external component 5; the connecting pipe 1 is provided with a piston chamber 10 and a connecting chamber 11 which are interconnected, the inner diameter of the piston chamber 10 is smaller than the inner diameter of the connecting chamber 11, the connecting chamber 11 forms a mounting step at one end close to the piston chamber 10, and the end of the piston chamber 10 away from the connecting chamber 11 is used to connect with the gas source; the sealing ring 4 is fixed at the mounting step of the connecting chamber 11, and the inner diameter of the sealing ring 4 is smaller than the inner diameter of the piston chamber 10, the external component 5 is installed in the connecting chamber 11 and limits the sealing ring 4, and the external component 5 is installed in the connecting chamber 11 and limits the sealing ring 4. The component 5 is used to fix the hose in the connecting chamber 11; the piston member 2 includes a spring connecting portion 20, a sealing portion 21 and a hose connecting portion 22; the piston member 2 is slidably installed in the piston chamber 10, the sealing portion 21 can be fitted with the sealing ring 4, the hose connecting portion 22 can be placed in the connecting chamber 11, and the hose connecting portion 22 is used to abut against the hose; the return spring 3 is installed in the piston chamber 10, and one end of the return spring 3 is fixedly connected to the spring connecting portion 20. The return spring 3 can make the sealing portion 21 of the piston member 2 fit with the sealing ring 4 to isolate the piston chamber 10 and the connecting chamber 11, and the hose connecting portion 22 is placed in the connecting chamber 11.

[0039] The leak-proof hose quick connector is mainly used to connect the gas source and the hose. In other embodiments, the gas source can also be a fluid source such as a liquid or a gas-liquid mixture. This embodiment is only described with the gas source. In this embodiment, the opening of the connecting pipe 1 on one side of the piston chamber 10 is used to connect the gas source. The opening of the connecting pipe 1 on one side of the connecting chamber 11 is connected to the hose through the external component 5. The gas of the gas source can enter the hose through the piston chamber 10 and the connecting chamber 11 and reach the other end of the hose guide; specifically, the inner wall of the piston chamber 10 is provided with a ring-shaped platform structure for limiting the reset spring 3, so that the reset spring 3 can drive the piston member 2 to slide in the piston chamber 10 in the connection direction. The sealing ring 4 of this embodiment is a circular cone, which is sealed The minimum outer diameter of the sealing portion 21 is greater than the inner diameter of the sealing ring 4, and the maximum outer diameter of the sealing portion 21 is smaller than the inner diameter of the sealing ring 4, so that the sealing portion 21 can be tightly fitted with the sealing ring 4 through the side wall, and the sealing portion 21 cannot completely pass through the sealing ring 4, thereby improving the sealing effect between the sealing portion 21 and the sealing ring 4, and ensuring that the gas cannot leak from the piston chamber 10 when the anti-leakage hose quick connector is not in use; and the maximum outer diameter of the sealing portion 21 is smaller than the inner diameter of the piston chamber 10, so that when the sealing portion 21 is away from the sealing ring 4, the sealing portion 21, because its maximum outer diameter is smaller than the inner diameter of the piston chamber 10, can make the gas in the piston chamber 10 pass to the connecting chamber 11, thereby ensuring the normal use of the anti-leakage hose quick connector.

[0040] Under normal conditions without external force, the piston member 2 is only acted upon by the return spring 3 and is in a position where its sealing portion 21 is tightly fitted with the sealing ring 4. At this time, the hose connecting portion 22 is in the connecting chamber 11, thereby isolating the piston chamber 10 from the connecting chamber 11, so that the gas in the piston chamber 10 cannot leak through the junction of the piston chamber 10 and the connecting chamber 11; and when the hose is inserted into the connecting chamber 11 through the external component 5, the end of the hose abuts against the hose connecting portion 22 of the piston member 2 and forces the piston member 2 to slide away from the connecting chamber 11. At this time, the sealing portion 21 is away from the sealing ring 4, and the return spring 3 is in a compressed energy storage state under force, thereby connecting the piston chamber 10 with the connecting chamber 11, so that the gas in the piston chamber 10 can enter the connecting chamber 11 and finally be conducted to the corresponding position through the hose, so that the leak-proof hose quick connector can work normally. During this process, when When the hose is inserted to a position where it cannot be inserted further, the hose is fixed in the connecting cavity 11 by the external component 5, so that the hose is in a position abutting the hose connecting portion 22 and the return spring 3 is compressed for a long time; and when there is no need to perform air supply work, the restriction of the hose by the external component 5 is released, and the hose can be pulled out of the connecting cavity 11. At this time, the piston member 2 slides under the action of the return spring 3 and makes its sealing portion 21 fit tightly with the sealing ring 4, and because the gas flows from the piston cavity 10 to the connecting cavity 11, the sealing portion 21 can fit more tightly on the sealing ring 4. When the hose is pulled out, the sealing portion 21 quickly fits the sealing ring 4 to isolate the piston cavity 10 and the connecting cavity 11, thereby achieving the anti-leakage effect of the leak-proof hose quick connector, solving the cumbersome problem that the traditional hose connector still needs to be blocked with the help of other tools to prevent leakage after the hose is pulled out, and the gas leakage problem that occurs in this process.

[0041] In general, the leak-proof hose quick connector realizes normal isolation of the piston chamber 10 and the connecting chamber 11 by arranging a piston chamber 10 and a connecting chamber 11 with different inner diameters in the connecting tube 1, and by means of a reset spring 3, the piston member 2 is in a position where the sealing portion 21 and the sealing ring 4 are tightly fitted under normal conditions, and the piston chamber 10 and the connecting chamber 11 are connected by means of the insertion of the hose, so that the piston member 2 compresses the reset spring 3 and the sealing portion 21 and the sealing ring 4 are separated from each other, thereby connecting the piston chamber 10 and the connecting chamber 11, and then sending the gas from the piston chamber 10 into the hose, and when the hose is pulled out, the sealing portion 21 quickly fits the sealing ring 4 to isolate the piston chamber 10 from the connecting chamber 11, thereby achieving the leak-proof effect of the leak-proof hose quick connector, solving the cumbersome problem that the traditional hose connector still needs to be blocked with the help of other tools to prevent leakage after the hose is pulled out, and the gas leakage problem that occurs in the process.

[0042] In order to reduce the influence of the hose connecting part 22 on the communication effect between the piston chamber 10 and the connecting chamber 11, the hose connecting part 22 includes at least three connecting protrusions 220, and the at least three connecting protrusions 220 are evenly distributed on the end wall of the sealing part 21 close to the connecting chamber 11, and the outer diameter of the largest circle enclosed by the at least three connecting protrusions 220 is smaller than the maximum outer diameter of the sealing part 21, so that the hose connecting part 22 passes through the sealing ring 4 and is placed in the connecting chamber 11 to contact the hose. The three connecting protrusions 220 are spaced from each other and not connected to each other, so that a cavity is formed in the middle of the three connecting protrusions 220, so that after the gas passes through the piston chamber 10, it will not be affected by the hose connecting part 22 and can smoothly enter the hose; in this embodiment, the height of the connecting protrusion 220 is greater than the depth of the sealing part 21 inserted into the sealing ring 4, and the insertion depth of the hose after contacting the connecting protrusion 220 is greater than the depth of the sealing part 21 inserted into the sealing ring 4, thereby ensuring that after the hose is fully inserted, the sealing part 21 can be completely separated from the sealing ring 4, so as to connect the piston chamber 10 with the connecting chamber 11.

[0043] See attached Figure 3 The spring connection part 20 is a protruding structure provided on the end wall of the sealing part 21 away from the connection chamber 11. The cross section of the spring connection part 20 is in the shape of a "human". The maximum outer diameter of the spring connection part 20 is less than or equal to the inner diameter of the piston chamber 10. Specifically, a connection notch 200 is provided at the outer peripheral edge of the spring connection part 20. The connection notch 200 is used to connect one end of the reset spring 3. The reset spring 3 is connected to the reset spring 3 through the connection notch 200 at the end edge of the spring connection part 20, so that the reset spring 3 can surround the inner wall of the piston chamber 10, thereby reducing the interference with the gas inside the piston chamber 10. In this embodiment, the maximum outer diameter of the spring connecting part 20 is slightly smaller than the inner diameter of the piston cavity 10, that is, there is a gap between the peripheral side wall of the spring connecting part 20 and the inner wall of the piston cavity 10. While ensuring that the piston member 2 slides smoothly in the piston cavity 10, the smaller gap can improve the connection stability between the piston member 2 and the connecting pipe 1; it should also be noted that the maximum outer diameter of the spring connecting part 20 is greater than the maximum outer diameter of the sealing part 21, so that when the sealing part 21 is away from the sealing ring 4, the gas can flow quickly into the connecting cavity 11, thereby improving the rapid connectivity of the leak-proof hose quick connector during operation.

[0044] See attached Figure 2 , Attachment Figure 4 and attached Figure 5The external component 5 includes a metal clamping ring 50, a fixed ring seat 51 and a release cap 52; the metal clamping ring 50 is placed in the connecting chamber 11, and a plurality of claws 501 are provided on the metal clamping ring 50, the diameter of the smallest circle enclosed by the plurality of claws 501 is smaller than the inner diameter of the sealing ring 4, and the plurality of claws 501 are used to bite and fix the hose; the fixed ring seat 51 is installed in the connecting chamber 11, and the fixed ring seat 51 fixes the metal clamping ring 50 on the end wall of the sealing ring 4; the release cap 52 is hollow, and the release cap 52 and the fixed ring seat 51 are coaxially slidably connected, one end of the release cap 52 can abut against the plurality of claws 501 and make the plurality of claws 501 bend toward the piston chamber 10, and the other end of the release cap 52 forms an end cover and is placed outside the connecting chamber 11. Specifically, the metal clamping ring 50 is made of metal steel with good elasticity and high strength. The claws 501 thereon bite and insert the hose into the connecting cavity 11 to fix the hose. In this embodiment, the metal clamping ring 50 is limited by the fixed ring seat 51, and the fixed ring seat 51 is used to install the release cap 52, so that the internal structure of the leak-proof hose quick connector is ingenious and exquisite, and is linked together; the claws 501 are then abutted by the slidable release cap 52 to bend the claws 501. After multiple claws 501 are bent, the hose can be pulled out of the connecting cavity 11 without being restricted.

[0045] In order to further improve the structural stability of the leak-proof hose connector, a limiting ring 520 is provided at one end of the release cap 52, and the outer wall of the fixed ring seat 51 is provided with a limiting step 510 that cooperates with the limiting ring 520, that is, when the release cap 52 is installed on the fixed ring seat 51, the release cap 52 cannot be separated from the fixed ring seat 51. Accordingly, in order to facilitate the insertion of the release cap 52 into the fixed ring seat 51, the release cap 52 is designed to be inclined on the outer wall of the limiting ring 520, that is, the outer shape of the limiting ring 520 is a truncated cone. In this embodiment, the release cap 52 is made of a hard rubber material that can undergo a certain deformation.

[0046] In order to further improve the isolation effect between the piston chamber 10 and the connecting chamber 11, the present embodiment provides multiple sealing rings 4, and the multiple sealing rings 4 are superimposed on the installation step of the connecting chamber 11. In other embodiments, the sealing rings 4 can be two, three, etc., or a single sealing ring 4 with a thicker thickness, which can be set according to the actual application scenario of the connecting pipe 1.

[0047] As attached Figure 6 As shown, other embodiments further provide a two-way quick connector, including two of the above-mentioned leak-proof hose quick connectors, the two leak-proof hose quick connectors are symmetrically arranged, and the connecting pipes 1 of the two leak-proof hose quick connectors are coaxially connected at one end of the piston cavity 10. Specifically, one end of the two connecting pipes 1 can be integrally formed, and the two-way quick connector can be used in a gas circuit, that is, both ends of the two-way quick connector are connected to hoses to achieve two-way flow of gas in the circuit.

[0048] As attached Figure 7 As shown, a multi-directional quick connector comprises three of the above-mentioned anti-leakage hose quick connectors, the three anti-leakage hose quick connectors are evenly distributed on the circumference, and the connecting pipes 1 of the three anti-leakage hose quick connectors are interconnected at one end of their piston chambers 10. Specifically, one end of the three connecting pipes 1 can be integrally formed. The multi-directional quick connector can be used in a circuit that requires multi-path to one path or one path to multi-path conduction. When used, the corresponding hoses can be connected according to actual needs. The multi-directional quick connector can also be a quick connector structure for more gas paths such as four-way and five-way, which is not limited here.

[0049] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A leak-proof hose quick connector, characterized in that: include: Connecting pipe, piston, return spring, sealing ring and external components; The connecting tube is provided with a piston cavity and a connecting cavity which are interconnected, the inner diameter of the piston cavity is smaller than the inner diameter of the connecting cavity, the connecting cavity forms a mounting step at one end close to the piston cavity, and the end of the piston cavity away from the connecting cavity is used for connecting to a gas source; The sealing ring is fixed at the installation step of the connecting cavity, and the inner diameter of the sealing ring is smaller than the inner diameter of the piston cavity. The external component is installed in the connecting cavity and limits the sealing ring. The external component is used to fix the hose in the connecting cavity; The piston member includes a spring connection part, a sealing part and a hose connection part; the piston member is slidably mounted in the piston cavity, the sealing part can be fitted with a sealing ring, the hose connection part can be placed in the connection cavity, and the hose connection part is used to abut against the hose; The return spring is installed in the piston cavity, and one end of the return spring is fixedly connected to the spring connecting part. The return spring can make the sealing part of the piston member fit with the sealing ring to isolate the piston cavity and the connecting cavity, and the hose connecting part is placed in the connecting cavity.

2. The anti-leakage hose quick connector according to claim 1, characterized in that: The sealing part is a circular frustum, the minimum outer diameter of the sealing part is larger than the inner diameter of the sealing ring, the maximum outer diameter of the sealing part is smaller than the inner diameter of the sealing ring, and the maximum outer diameter of the sealing part is smaller than the inner diameter of the piston chamber.

3. The anti-leakage hose quick connector according to claim 2, characterized in that: The hose connection portion includes at least three connection protrusions, which are evenly distributed on the end wall of the sealing portion close to the connection cavity, and the outer diameter of the largest circle enclosed by the at least three connection protrusions is smaller than the maximum outer diameter of the sealing portion.

4. The anti-leakage hose quick connector according to claim 2, characterized in that: The spring connection part is a protruding structure provided on the end wall of the sealing part away from the connection cavity. The cross section of the spring connection part is a "human" shape. The maximum outer diameter of the spring connection part is less than or equal to the inner diameter of the piston cavity.

5. The anti-leakage hose quick connector according to claim 4, characterized in that: A connecting notch is provided at the outer peripheral edge of the spring connecting portion, and the connecting notch is used to connect one end of the reset spring.

6. The anti-leakage hose quick connector according to claim 2, characterized in that: The external assembly includes a metal snap ring, a fixing ring seat and a release cap; The metal clamp ring is placed in the connecting cavity, and a plurality of claws are provided on the metal clamp ring, the diameter of the smallest circle enclosed by the plurality of claws is smaller than the inner diameter of the sealing ring, and the plurality of claws are used to bite and fix the hose; The fixed ring seat is installed in the connecting cavity, and the fixed ring seat fixes the metal clamp ring to the end wall of the sealing ring; The release cap is hollow, and is coaxially slidably connected to the fixed ring seat. One end of the release cap can abut against a plurality of claws and bend the claws toward the piston cavity. The other end of the release cap forms an end cover and is placed outside the connecting cavity.

7. The anti-leakage hose quick connector according to claim 6, characterized in that: A limiting ring is provided at one end of the release cap, and a limiting step matched with the limiting ring is provided on the outer wall of the fixing ring seat.

8. The anti-leakage hose quick connector according to claim 2, characterized in that: There are multiple sealing rings, and the multiple sealing rings are superimposed on the installation step of the connecting cavity.

9. A two-way quick connector, characterized in that: It comprises two anti-leakage hose quick connectors as described in any one of claims 1 to 8, the two anti-leakage hose quick connectors are symmetrically arranged, and the connecting pipes of the two anti-leakage hose quick connectors are coaxially connected at one end of the piston cavity.

10. A multi-directional quick connector, characterized in that: It comprises at least three anti-leakage hose quick connectors as described in any one of claims 1 to 8, wherein the at least three anti-leakage hose quick connectors are evenly distributed around the circumference, and the connecting pipes of the at least three anti-leakage hose quick connectors are interconnected at one end of the piston cavity thereof.

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