A quick connector

Abstract

The present invention discloses a quick connector, comprising: a connector body, the connector body having a sliding surface, the connector body forming a first opening at the sliding surface; a buckle, the buckle being slidably disposed on the sliding surface, the buckle having a second opening, the second opening being connected with the first opening to form a card interface; the buckle adjusting the position of the second opening relative to the first opening by sliding relative to the sliding surface in a first direction to adjust the caliber of the card interface in the first direction; the buckle being operable to be in a locking position and a releasing position, when the buckle is in the locking position, the caliber of the card interface in the first direction is smaller, and when the buckle is in the releasing position, the caliber of the card interface in the first direction is larger. The quick connector of the present invention can reliably realize locking and releasing, has a wide range of applications, and has high stability in the locked state.

Description

Technical Field

[0001] The invention relates to the technical field of fluid control, and in particular to a quick connector. Background Art

[0002] The water inlet and outlet of existing pumps are mostly threaded. In actual assembly, a threaded pipe joint is used, and a certain amount of sealing filling material is wrapped around it and then tightened to assemble it. This method is relatively cumbersome, with low assembly efficiency and is unreliable. The amount of sealing filler is difficult to control, and the degree of tightening of the pipe joint is also restricted by the direction of the water pipe joint. In this way, it is very easy to have poor sealing of the connection here. At present, there are also pumps with quick connectors on the market, but they use a simple process that follows the water pipe quick connector. The quick connector part is directly welded to the pump using an ultrasonic process. Since the pump head material is made of general nylon reinforced raw material, and the ultrasonic welding process performance of this material is not good, it is easy to have poor welding. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a quick connector.

[0004] A quick connector, comprising:

[0005] A joint body, wherein the joint body has a sliding surface, and the joint body forms a first opening at the sliding surface;

[0006] A buckle, the buckle is slidably disposed on the sliding surface, the buckle has a second opening, and the second opening is connected to the first opening to form a card interface;

[0007] The buckle adjusts the position of the second opening relative to the first opening by sliding relative to the sliding surface in the first direction, so as to adjust the diameter of the card interface in the first direction;

[0008] The buckle is operable to be in a locking position and a releasing position. When the buckle is in the locking position, the diameter of the card interface in the first direction is smaller, and when the buckle is in the releasing position, the diameter of the card interface in the first direction is larger;

[0009] The quick connector also includes:

[0010] a first elastic member, the first elastic member continuously providing a force that causes the buckle to tend toward the locking position;

[0011] A positioning member moves along a second direction intersecting the first direction, and the positioning member maintains the buckle in the locking position or the releasing position through limiting cooperation.

[0012] The above-mentioned quick connector further includes: a second elastic member, wherein the second elastic member drives the positioning member to move along a second direction intersecting with the first direction.

[0013] In the above-mentioned quick connector, the first direction is the radial direction of the connector body, and the second direction is the axial direction of the connector body.

[0014] The above-mentioned quick connector, wherein the second opening is provided with a positioning matching groove near the positioning member, the positioning member has a first matching portion and a second matching portion arranged along the second direction, and the first matching portion and the second matching portion both match the positioning matching groove;

[0015] The positioning member is operable to be in a first positioning position and a second positioning position. When the positioning member is in the first positioning position, the first matching portion cooperates with the positioning matching groove to maintain the buckle in the locked position; when the positioning member is in the second positioning position, the second matching portion cooperates with the positioning matching groove to maintain the buckle in the released position.

[0016] The above-mentioned quick connector, wherein the first matching portion comprises:

[0017] A first radial mating surface, the first radial mating surface matches the groove bottom or groove side wall of the positioning mating groove, and is used to maintain the buckle in the locking position;

[0018] A first axial mating surface, wherein the first axial mating surface matches the side surface of the buckle facing the connector body, and is used to maintain the positioning member at the first positioning position.

[0019] The above-mentioned quick connector, wherein the second matching portion comprises:

[0020] a second radial mating surface, the second radial mating surface matches the groove wall of the positioning mating groove, and is used to maintain the buckle in the released position;

[0021] A second axial mating surface, wherein the second axial mating surface matches the side of the buckle facing the connector body and is used to maintain the positioning member at the second positioning position.

[0022] The above-mentioned quick connector, wherein the positioning member is a two-stage columnar structure, the positioning member includes a first-stage columnar portion with a larger outer diameter and a second-stage columnar portion with a smaller outer diameter connected to each other, and a positioning groove is provided on the second-stage columnar portion along its radial direction;

[0023] Wherein, the bottom of the positioning groove forms the first radial matching surface, and the side wall of the positioning groove forms the first axial matching surface;

[0024] The side surface of the second columnar portion close to one end of the first columnar portion forms the second radial mating surface, and the end surface of the first-stage columnar portion close to one end of the second-stage columnar portion forms the second axial mating surface.

[0025] In the above-mentioned quick connector, the positioning groove is located at one side of the second-stage columnar portion, and the positioning groove is directly opposite to the positioning matching groove.

[0026] The above-mentioned quick connector, wherein the positioning member is allowed to translate along the second direction but is not allowed to rotate around the second direction.

[0027] In the above-mentioned quick connector, the positioning member has a non-cylindrical shape that matches the space accommodating the positioning member, so as to limit the movement direction of the positioning member and limit the rotation of the positioning member.

[0028] For example, the first-stage columnar portion of the positioning member is hexagonal, and the space accommodating the positioning member is also hexagonal, thereby allowing the positioning member to translate along the second direction but not allowing the positioning member to rotate around the second direction.

[0029] For another example, the first-stage columnar portion of the positioning member is a cylindrical structure, one side of the cylindrical structure is cut to form a plane, and the radial cross-section of the first-stage columnar portion is fan-shaped, thereby forming a structure suitable for sliding in the axial direction but not suitable for rotating around the axial direction.

[0030] In the above-mentioned quick connector, an elastic member groove for accommodating the second elastic member is formed at one end of the first-stage columnar portion away from the second-stage columnar portion.

[0031] The above-mentioned quick connector, wherein the buckle includes a first plate-like portion and a second plate-like portion which are connected to each other and have an angle, the first plate-like portion can be slidably arranged on the sliding surface, the second opening is opened on the first plate-like portion, and the force provided by the first elastic member acts on the second plate-like portion.

[0032] The above-mentioned quick connector, wherein the connector body comprises:

[0033] A valve body, wherein a flow channel is provided in the valve body, a middle portion of the flow channel extends inwardly to form an annular valve seat, the valve body has the sliding surface, and the valve body forms the first opening connected to one end of the flow channel at the sliding surface;

[0034] A connecting pipe, the connecting pipe is connected to the valve body and is arranged at the other end of the flow channel;

[0035] A valve core is arranged at the valve seat, and the valve core can move relative to the valve seat along the direction of the flow channel.

[0036] The above-mentioned quick connector, wherein the connector body also includes: a compression spring, the compression spring is sleeved on the valve core, one end of the valve core extends outward to form a valve core boss, one end of the compression spring abuts against the valve core boss, and the other end of the compression spring abuts against the valve seat.

[0037] In the above-mentioned quick connector, the valve body is respectively formed with sliding guide grooves on both sides of the sliding surface, and the two sides of the buckle are respectively arranged in the two sliding guide grooves.

[0038] Due to the adoption of the above technology, the present invention has the following positive effects compared with the prior art:

[0039] (1) The quick connector of the present invention can reliably achieve locking and loosening, has a wide range of applications, has high stability in the locked state, and has a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a cross-sectional view of the quick connector of the present invention.

[0041] Figure 2 It is an enlarged cross-sectional view of the positioning member and the surrounding part of the quick connector of the present invention.

[0042] Figure 3 It is an enlarged cross-sectional view of the first elastic member and the surrounding part of the quick connector of the present invention.

[0043] Figure 4 It is an exploded view of the quick connector of the present invention.

[0044] Figure 5a It is a three-dimensional view of the first embodiment of the positioning member of the quick connector of the present invention.

[0045] Figure 5b It is a stereoscopic view of a second embodiment of the positioning member of the quick connector of the present invention.

[0046] Figure 6 It is a three-dimensional view of the quick connector of the present invention.

[0047] Figure 7 It is a schematic diagram of the locking position of the quick connector of the present invention.

[0048] Figure 8 It is a schematic diagram of the loosened position of the quick connector of the present invention.

[0049] In the accompanying drawings: 1. connector body; 11. sliding surface; 12. first opening; 13. valve body; 131. sliding guide groove; 14. connecting pipe; 15. valve core; 16. compression spring; 2. buckle; 21. second opening; 22. matching groove; 23. first plate-like portion; 24. second plate-like portion; 3. first elastic member; 4. positioning member; 411. first radial matching surface; 412. first axial matching surface; 421. second radial matching surface; 422. second axial matching surface; 43. first columnar portion; 44. second columnar portion; 441. elastic member groove; 5. second elastic member; 6. locking nut. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0052] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values.

[0053] Figure 1 is a cross-sectional view of a quick connector of the present invention, Figure 2 is an enlarged cross-sectional view of the positioning member and the surrounding part of the quick connector of the present invention, Figure 3 is an enlarged cross-sectional view of the first elastic member and the surrounding part of the quick connector of the present invention, Figure 4is an exploded view of the quick connector of the present invention, Figure 5a is a three-dimensional diagram of a first embodiment of a positioning member of a quick connector of the present invention, Figure 5b is a stereogram of a second embodiment of the positioning member of the quick connector of the present invention, Figure 6 is a stereogram of the quick connector of the present invention, Figure 7 Schematic diagram of the locking position of the quick connector of the present invention. Figure 8 This is a schematic diagram of the loose position of the quick connector of the present invention, see Figures 1 to 8 , a quick connector of a preferred embodiment is shown, comprising: a connector body 1 and a buckle 2, the connector body 1 having a sliding surface 11, and the connector body 1 forming a first opening 12 at the sliding surface 11. The buckle 2 is slidably disposed on the sliding surface 11, and the buckle 2 has a second opening 21, which is connected to the first opening 11 to form a card interface. In other words, the card interface is equivalent to the overlapped portion of the second opening 21 and the first opening 11, and the quick connection of the connector is achieved by changing the diameter of the card interface.

[0054] Further, as a preferred embodiment, the buckle 2 adjusts the position of the second opening 21 relative to the first opening 11 by sliding relative to the sliding surface 11 in the first direction, so as to adjust the diameter of the card interface in the first direction. Figure 1 As shown, when the buckle 2 is Figure 1 When the buckle 2 moves in the vertical downward direction, the overlap between the second opening 21 and the first opening 12 increases, and the diameter of the card interface increases; Figure 1 When the card interface moves in the vertically upward direction, the overlapped portion of the second opening 21 and the first opening 12 is reduced, and the diameter of the card interface is reduced.

[0055] Further, as a preferred embodiment, the buckle 2 is operable to be in a locked position and a released position. When the buckle 2 is in the locked position, the diameter of the card interface in the first direction is smaller, and when the buckle 2 is in the released position, the diameter of the card interface in the first direction is larger.

[0056] Further, as a preferred embodiment, the quick connector further comprises: a first elastic member 3, the first elastic member 3 continuously provides a force to make the buckle 2 tend to the locking position. Preferably, the first elastic member 3 can be a spring.

[0057] Further, as a preferred embodiment, the quick connector further comprises: a positioning member 4, the positioning member 4 moves along a second direction intersecting the first direction, and the positioning member 4 maintains the buckle 2 in a locked position or a released position through limiting cooperation. Preferably, the positioning member 4 is a positioning pin.

[0058] Further, as a preferred embodiment, the quick connector further comprises: a second elastic member 5, the second elastic member 5 drives the positioning member 4 to move along a second direction intersecting with the first direction. Preferably, the second elastic member 5 can be a spring.

[0059] Further, as a preferred embodiment, the first direction is the radial direction of the joint body 1 (ie Figure 1 The second direction is the vertical direction of the joint body 1 (i.e. Figure 1 in the horizontal direction).

[0060] Further, as a preferred embodiment, a positioning matching groove 22 is formed in the second opening 21 near the positioning member 4 , and the positioning member 4 has a first matching portion and a second matching portion arranged along the second direction, and both the first matching portion and the second matching portion match the positioning matching groove 22 .

[0061] Further, as a preferred embodiment, the positioning member 4 can be operably located in a first positioning position and a second positioning position. When the positioning member 4 is in the first positioning position, the first matching portion cooperates with the positioning matching groove 22 to maintain the buckle 2 in a locked position; when the positioning member 4 is in the second positioning position, the second matching portion cooperates with the positioning matching groove 22 to maintain the buckle 2 in a released position.

[0062] Further, as a preferred embodiment, the first matching portion includes: a first radial matching surface 411, the first radial matching surface 411 matches the groove bottom or groove side wall of the positioning matching groove 22, and is used to maintain the buckle 2 in the locking position. Figure 2 As shown in one preferred embodiment, the first radial mating surface 411 is the side of the portion with the smallest outer diameter of the positioning member 4. The portion with the smallest outer diameter of the positioning member 4 is similar to Figure 4 5 is formed by a groove opened on the side of the positioning member 4.

[0063] Further, as a preferred embodiment, the first matching portion includes: a first axial matching surface 412, the first axial matching surface 412 matches the side of the buckle 2 facing the connector body 1, and is used to maintain the positioning member 4 in the first positioning position. Figure 2 As shown, in one preferred embodiment, the first axial mating surface 412 is a surface adjacent to the first radial mating surface 411 and intersecting or even perpendicular to the first radial mating surface 411 .

[0064] Further, as a preferred embodiment, the second matching portion includes: a second radial matching surface 421, the second radial matching surface 421 matches the groove wall of the positioning matching groove 22, and is used to keep the buckle 2 in the released position. Figure 2As shown, in one preferred embodiment, the second radial matching surface 421 is a side surface of a portion of the positioning member 4 whose outer diameter is between the minimum outer diameter of the positioning member 4 and the maximum outer diameter of the positioning member 4 .

[0065] Further, as a preferred embodiment, the second matching portion includes: a second axial matching surface 422, the second axial matching surface 422 matches the side of the buckle 2 facing the connector body 1, and is used to maintain the positioning member 4 in the second positioning position. Figure 2 As shown, in one preferred embodiment, the second axial mating surface 422 is a surface adjacent to the second radial mating surface 421 and intersecting or even perpendicular to the second radial mating surface 421 .

[0066] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention.

[0067] The present invention also has the following implementation modes on the basis of the above:

[0068] In a further embodiment of the present invention, the positioning member 4 is a two-stage columnar structure, and the positioning member 4 includes a first-stage columnar portion 43 with a larger outer diameter and a second-stage columnar portion 44 with a smaller outer diameter that are connected to each other, and a positioning groove is opened on the second-stage columnar portion 44 along its radial direction.

[0069] In a further embodiment of the present invention, the bottom of the positioning groove forms a first radial mating surface 411 , and the side wall of the positioning groove forms a first axial mating surface 412 .

[0070] In a further embodiment of the present invention, the side surface of the second columnar portion 44 close to one end of the first columnar portion 43 forms a second radial mating surface 421 , and the end surface of the first columnar portion 43 close to one end of the second columnar portion 44 forms a second axial mating surface 422 .

[0071] In a further embodiment of the present invention, the positioning groove is located at one side of the second-stage columnar portion, and the positioning groove is directly opposite to the positioning matching groove 22 .

[0072] In a further embodiment of the present invention, the positioning member 4 is allowed to translate along the second direction but is not allowed to rotate around the second direction.

[0073] In a further embodiment of the present invention, the positioning member 4 has a non-cylindrical shape that matches the space accommodating the positioning member 4 (ie, the positioning member slot described below) to limit the movement direction of the positioning member 4 and the rotation of the positioning member 4.

[0074] In a preferred embodiment, see Figure 5aAs shown, the first-stage columnar portion 43 of the positioning member 4 is a hexagonal columnar structure, and the space accommodating the positioning member is also hexagonal, thereby allowing the positioning member 4 to translate along the second direction while not allowing the positioning member 4 to rotate around the second direction.

[0075] In another preferred embodiment, see Figure 5b As shown, the first-stage columnar portion 43 of the positioning member 4 is a cylindrical structure, one side of which is cut to form a plane, so that the radial cross-section of the first-stage columnar portion 43 is fan-shaped, as shown in FIG. Figure 2 The structure shown in FIG. Figure 2 Slide horizontally in the Figure 2 A structure that rotates in horizontal directions.

[0076] In other preferred embodiments, the outer peripheral surface of the second-stage columnar portion 44 of the positioning member 4 may also be a quadrilateral, an ellipse or other shapes that are not suitable for rotation.

[0077] In a further embodiment of the present invention, an elastic member groove 441 for accommodating the second elastic member 5 is formed at one end of the first columnar portion 43 away from the second columnar portion 44 .

[0078] In a further embodiment of the present invention, the buckle 2 includes a first plate-like portion 23 and a second plate-like portion 24 which are connected to each other and have an angle, the first plate-like portion 23 is slidably disposed on the sliding surface 11, the second opening 21 is opened on the first plate-like portion 23, and the force provided by the first elastic member 3 acts on the second plate-like portion 24.

[0079] In a further embodiment of the present invention, the joint body 1 includes: a valve body 13, a flow channel is provided in the valve body 13, the middle part of the flow channel extends inward to form an annular valve seat, the valve body 13 has a sliding surface 11, and the valve body 13 forms a first opening 12 connected to one end of the flow channel at the sliding surface 11.

[0080] In a further embodiment of the present invention, the connector body 1 comprises: a connecting pipe 14, the connecting pipe 14 is connected to the valve body 13, and the connecting pipe 14 is arranged at the other end of the flow channel. Preferably, the connecting pipe 14 is a Y-shaped connecting pipe. More preferably, the connecting pipe 14 is assembled to the valve body 13 through an E-shaped retaining ring, and an O-ring is further arranged between the connecting pipe 14 and the valve body 13.

[0081] In a further embodiment of the present invention, the joint body 1 comprises: a valve core 15, the valve core 15 is arranged at the valve seat, and the valve core 15 can move relative to the valve seat along the direction of the flow channel.

[0082] In a further embodiment of the present invention, the joint body 1 also includes: a compression spring 16, which is sleeved on the valve core 15, one end of the valve core 15 extends outward to form a valve core boss, one end of the compression spring 16 abuts against the valve core boss, and the other end of the compression spring 16 abuts against the valve seat.

[0083] Preferably, an O-ring is provided at the other end of the valve core 15, and sealing is achieved by the cooperation between the O-ring at the other end of the valve core 15 and the valve seat.

[0084] In a further embodiment of the present invention, the valve body 13 is formed with sliding guide grooves 131 on both sides of the sliding surface 11 , and both sides of the buckle 2 are disposed in the two sliding guide grooves 131 .

[0085] In further embodiments of the present invention, see Figure 2 As shown, a positioning member groove for accommodating the positioning member 4 is opened on one side of the valve body 13 along the axial direction of the valve body 13, the positioning member 4 is arranged in the positioning member groove, the second elastic member 5 is also arranged in the positioning member groove, one end of the second elastic member 5 abuts in the positioning member groove, and the other end of the second elastic member 5 abuts in the elastic member groove 441.

[0086] In further embodiments of the present invention, see Figure 3 As shown, a driving groove for accommodating the first elastic member 3 is provided on the other side of the valve body 13 along the radial direction of the valve body 13, and a positioning column for positioning the first elastic member 3 is also provided in the driving groove. One end of the first elastic member 3 is arranged in the gap between the driving groove and the positioning column, and the other end of the first elastic member 3 abuts against the second plate-shaped portion 24 of the buckle 2 to drive the buckle 2 to keep Figure 3 The tendency of movement in the vertical upward direction.

[0087] In a further embodiment of the present invention, the outer surface of the valve body 13 has a threaded section, and a locking nut 6 is also provided on the valve body 13 .

[0088] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick connector, characterized in that: include: A joint body, wherein the joint body has a sliding surface, and the joint body forms a first opening at the sliding surface; A buckle, the buckle is slidably disposed on the sliding surface, the buckle has a second opening, and the second opening is connected to the first opening to form a card interface; The buckle adjusts the position of the second opening relative to the first opening by sliding relative to the sliding surface in the first direction, so as to adjust the diameter of the card interface in the first direction; The buckle is operable to be in a locking position and a releasing position. When the buckle is in the locking position, the diameter of the card interface in the first direction is smaller, and when the buckle is in the releasing position, the diameter of the card interface in the first direction is larger; The quick connector also includes: a first elastic member, the first elastic member continuously providing a force that causes the buckle to tend toward the locking position; A positioning member, the positioning member moves along a second direction intersecting the first direction, and the positioning member maintains the buckle in the locking position or the releasing position through limiting cooperation; A positioning matching groove is formed near the positioning member at the second opening, and the positioning member comprises a first matching portion and a second matching portion arranged along the second direction, and the first matching portion and the second matching portion both match the positioning matching groove; The positioning member is operable to be in a first positioning position and a second positioning position. When the positioning member is in the first positioning position, the first matching portion cooperates with the positioning matching groove to maintain the buckle in the locking position; when the positioning member is in the second positioning position, the second matching portion cooperates with the positioning matching groove to maintain the buckle in the releasing position. The first matching portion comprises: A first radial mating surface, the first radial mating surface matches the groove bottom or groove side wall of the positioning mating groove, and is used to maintain the buckle in the locking position; A first axial mating surface, wherein the first axial mating surface matches the side surface of the buckle facing the connector body, and is used to maintain the positioning member at the first positioning position.

2. The quick connector according to claim 1, characterized in that: Also includes: A second elastic member drives the positioning member to move along a second direction intersecting the first direction.

3. The quick connector according to claim 2, characterized in that: The first direction is a radial direction of the joint body, and the second direction is an axial direction of the joint body.

4. The quick connector according to claim 1, characterized in that: The second matching portion includes: a second radial mating surface, the second radial mating surface matches the groove wall of the positioning mating groove, and is used to maintain the buckle in the released position; A second axial mating surface, wherein the second axial mating surface matches the side of the buckle facing the connector body and is used to maintain the positioning member at the second positioning position.

5. The quick connector according to claim 4, characterized in that: The positioning member is a two-stage columnar structure, comprising a first-stage columnar portion with a larger outer diameter and a second-stage columnar portion with a smaller outer diameter connected to each other, and a positioning groove is provided on the second-stage columnar portion along its radial direction; Wherein, the bottom of the positioning groove forms the first radial matching surface, and the side wall of the positioning groove forms the first axial matching surface; The side surface of the second-stage columnar portion close to one end of the first-stage columnar portion forms the second radial mating surface, and the end surface of the first-stage columnar portion close to one end of the second-stage columnar portion forms the second axial mating surface.

6. The quick connector according to claim 5, characterized in that: The positioning groove is located at one side of the second-stage columnar portion, and the positioning groove is directly opposite to the positioning matching groove.

7. The quick connector according to claim 5, characterized in that: The positioning member is allowed to translate along the second direction but is not allowed to rotate about the second direction.

8. The quick connector according to claim 5, characterized in that: An elastic member groove for accommodating the second elastic member is formed at one end of the first-stage columnar portion away from the second-stage columnar portion.

9. The quick connector according to claim 1, characterized in that: The buckle includes a first plate-like portion and a second plate-like portion which are connected to each other and have an angle, the first plate-like portion is slidably arranged on the sliding surface, the second opening is opened on the first plate-like portion, and the force provided by the first elastic member acts on the second plate-like portion.

10. The quick connector according to claim 1, characterized in that: The joint body comprises: A valve body, wherein a flow channel is provided in the valve body, a middle portion of the flow channel extends inwardly to form an annular valve seat, the valve body has the sliding surface, and the valve body forms the first opening connected to one end of the flow channel at the sliding surface; A connecting pipe, the connecting pipe is connected to the valve body and is arranged at the other end of the flow channel; A valve core is arranged at the valve seat, and the valve core can move relative to the valve seat along the direction of the flow channel.

11. The quick connector according to claim 10, characterized in that: The joint body also includes: a compression spring, which is sleeved on the valve core, one end of the valve core extends outward to form a valve core boss, one end of the compression spring abuts against the valve core boss, and the other end of the compression spring abuts against the valve seat.

12. The quick connector according to claim 10, characterized in that: The valve body is formed with sliding guide grooves on both sides of the sliding surface, and the two sides of the buckle are respectively arranged in the two sliding guide grooves.

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