A quick connector

Abstract

The present invention provides a quick connector, comprising a first tube body and a second tube body, wherein the inner end of the first tube body is detachably sealed and connected to the inner end of the second tube body, the outer end of the first tube body is detachably sealed and connected to one end of the pipe to be connected, and the outer end of the second tube body is detachably sealed and connected to the other end of the pipe to be connected; a first valve port and a first valve core are provided in the first tube body to match; the first valve core is pushed to the first valve port by a reset spring axially provided in the first tube body and closes the first valve port; a second valve port and a second valve core are provided in the second tube body to match. Through the above arrangement, after the first tube body and the second tube body are pre-sealed and connected, the first valve core is controlled to move by a rotating ring and the second valve core is driven to open the first valve port and the second valve port to connect the pipe to be connected, thereby avoiding the spraying of the medium in the pipe to be connected when installing the quick connector, and realizing online connection, which is convenient and efficient to install.

Description

Technical Field

[0001] The invention relates to the technical field of pipe joints, and in particular to a quick joint. Background Art

[0002] A quick connector is a connection device that can quickly connect or disconnect a pipeline and realize quick disassembly and assembly. Since the quick connector has a two-way non-return function and the pipeline is disconnected without leakage, it is widely used in the fields of petroleum, metallurgy, hydropower, engineering machinery, ships, electromechanical equipment, hydraulics, pneumatics, etc. The existing quick connectors still have the following problems when used:

[0003] (1) When the quick connector is connected, the male connector and the female connector need to be butt-jointed together for connection. This connection method requires the internal medium of the pipeline to be depressurized before the quick connector can be easily butt-jointed. Otherwise, the internal high-pressure medium will splash and leak, causing dangerous accidents;

[0004] (2) When the quick connector is connected, the internal medium of the pipeline needs to be depressurized before docking, which requires stopping the working system loop before completing the connection between the pipelines. This operation is time-consuming and labor-intensive, affecting production progress;

[0005] (3) When the quick connector is connected, the one-way valves inside the male and female connectors need to be pushed open to achieve pipeline connectivity. Therefore, when the quick connector is connected, the one-way valves on both sides are often opened before a stable seal is formed between the male and female connectors, causing medium leakage. Summary of the invention

[0006] The technical problem to be solved by the present invention is that the existing quick connector needs to stop the working system loop before docking, which makes the installation of the quick connector time-consuming and labor-intensive, affecting the continuous production. In order to solve the above problem, a quick connector is provided.

[0007] To achieve the above object, the present invention provides the following technical solution: a quick connector, comprising a first tube body and a second tube body, wherein the inner end of the first tube body is detachably sealed and connected to the inner end of the second tube body, the outer end of the first tube body is detachably sealed and connected to one end of a pipe to be connected, and the outer end of the second tube body is detachably sealed and connected to the other end of the pipe to be connected;

[0008] A first valve port and a first valve core that match each other are provided in the first tube body; the first valve core is pushed to the first valve port by a return spring axially provided in the first tube body and closes the first valve port; a second valve port and a second valve core that match each other are provided in the second tube body, a radial rotating shaft is provided in the second tube body, and the second valve core is fixed on the radial rotating shaft and rotates synchronously with the radial rotating shaft; a first eccentric slider is fixedly provided on the protruding end of the radial rotating shaft that passes through the side wall of the second tube body, a rotating ring is coaxially sleeved on the outer side of the second tube body, and a Y-shaped sliding groove is provided on the inner wall of the rotating ring for the first eccentric slider to slide into and guide the first eccentric slider to rotate around the axis of the radial rotating shaft;

[0009] When the first eccentric slider slides through the Y-shaped slide groove, the radial rotating shaft drives the second valve core to rotate to open the second valve port, and then the second valve core continues to rotate until it contacts and pushes the first valve core to overcome the axial movement of the return spring to open the first valve port. When the first valve port is open, when the central axes of the first valve core and the second valve core coincide, the first eccentric slider slides out of the Y-shaped slide groove.

[0010] Optionally, a protruding annular limit platform is provided on the inner wall of the rotating ring, and the first eccentric slider slides and abuts on the end face of the annular limit platform. A slot with an expanded opening is provided on the end face of the annular limit platform. A protruding guide block is provided on the inner wall of the rotating ring. The guide block is located at the expanded opening of the slot and cooperates with the slot to form the Y-shaped slide groove.

[0011] Optionally, one end of the guide block extends axially to form a protruding annular limit platform so that the first eccentric sliding block slides into the Y-shaped sliding groove.

[0012] Optionally, a second eccentric slider is provided on the protruding end of the radial rotating shaft, and the first eccentric slider and the second eccentric slider are respectively located on opposite sides of the protruding end, and the second eccentric slider slides and abuts against the end face of the annular limit platform. When the first eccentric slider slides through the Y-shaped slide groove, the second eccentric slider detaches from the annular limit platform and bypasses the outside of the guide block and then slides and abuts against the annular limit platform.

[0013] Optionally, a rotatable connecting shaft is passed through the side wall of the second tube body, a third eccentric slider is provided on the outer end of the connecting shaft extending out of the second tube body, and an eccentric locking block is fixedly provided on one end of the connecting shaft extending out of the second tube body; an axial slot and a circumferential slot are provided at the end of the first tube body, the outer end of the axial slot passes through the end of the first tube body, and the inner end of the axial slot is connected with one end of the circumferential slot; the first tube body and the second tube body are plugged and fixed, and the eccentric locking block is limited at the inner end of the axial slot; the third eccentric slider is located on the front side of the locking direction of the rotating ring, and the first eccentric slider is located on the rear side of the locking direction of the rotating ring so that the third eccentric slider first passes through the Y-shaped slide groove to realize the sealing connection between the first tube body and the second tube body, and the first eccentric slider passes through the Y-shaped slide groove to realize the opening of the first valve port and the second valve port;

[0014] The third eccentric slider cooperates and slides against the annular limit table. When the third eccentric slider slides through the Y-shaped slot, it drives the connecting shaft to rotate. The rotation of the connecting shaft drives the eccentric locking block to rotate. When the eccentric locking block rotates from the inner end of the axial slot to the circumferential slot, the third eccentric slider slides out of the Y-shaped slot.

[0015] Optionally, a fourth eccentric slider is fixedly arranged on the outer end of the connecting shaft, and the third eccentric slider and the fourth eccentric slider are respectively located on opposite sides of the connecting shaft, and the fourth eccentric slider slides and contacts the end face of the annular limit platform. When the third eccentric slider slides through the Y-shaped slide groove, the fourth eccentric slider detaches from the annular limit platform and bypasses the outside of the guide block and then slides and contacts the annular limit platform.

[0016] Optionally, a support disk is detachably fixedly disposed in the first tube body, a first valve core is movably penetrated at the center of the support disk, and the reset spring is disposed between the first valve core and the support disk.

[0017] Optionally, a connecting pipe is inserted and fixed at one end of the first tube body, the connecting pipe is used to connect to the pipeline to be connected, and the support plate is clamped and fixed between the inner end of the connecting pipe and the inner end surface of the first tube body.

[0018] Optionally, an axial groove is provided on the first tube body, and the radial rotating shaft is fitted and limited in the axial groove.

[0019] Optionally, an elastic locking rod is provided on the rotating ring, and a first locking groove and a second locking groove which cooperate with the elastic locking rod to lock are provided on the outer side wall of the second tube body. In a natural state, the elastic locking rod is inserted into the first locking groove or the second locking groove to lock; when the elastic locking rod is inserted into the first locking groove to lock, the second valve core is located on one side of the radial rotating axis and closes the second valve port; when the elastic locking rod is inserted into the second locking groove to lock, the second valve core opens the second valve port and is located on the other side of the radial rotating axis.

[0020] The technical effects of the present invention are as follows:

[0021] 1. In the quick connector of the present invention, when installing the quick connector, firstly, the first tube body and the second tube body are detachably sealed and connected, the outer end of the first tube body is connected to one end of the pipeline to be connected, and the outer end of the second tube body is connected to the other end of the pipeline to be connected, at this time, the first valve port in the first tube body is closed by the first valve core, and the second valve port in the second tube body is closed by the second valve core. Rotate the rotating ring, and during the rotation of the rotating ring, the first eccentric slider slides on the inner wall of the rotating ring, and when the first eccentric slider slides through the Y-shaped slide groove, the first eccentric slider is guided to rotate around the radial shaft, and at the same time drives the radial shaft to rotate, and at the same time drives the second valve core to rotate, and the second valve core rotates to open the second valve port, and then the second valve core continues to rotate until it contacts and pushes the first valve core to overcome the axial movement of the reset spring and separate from the first valve port, thereby opening the first valve port, and at this time, both the first valve port and the second valve port are opened to realize the internal conduction of the quick connector, thereby realizing the connection of the pipeline to be connected. After the first tube body and the second tube body are pre-sealed and connected, the first valve core is controlled to move by the rotating ring and the second valve core is driven to open the first valve port and the second valve port to connect the pipeline to be connected, thereby avoiding the medium in the pipeline to be connected from spraying out when installing the quick connector. There is no need to relieve the pressure of the medium in the pipeline to be connected, and online connection can be achieved, which is convenient and efficient to install.

[0022] 2. In the quick connector of the present invention, a rotatable second valve core is provided in the second tube body to block the second valve port, so that when the first tube body and the second tube body are plugged in, the second valve core will not touch the first valve core. In this way, when the first tube body and the second tube body have not formed a stable seal, the first valve core and the second valve core will not push each other apart to cause leakage.

[0023] 3. In the quick connector of the present invention, a rotatable second valve core is provided in the second tube body, and the locking of the first tube body and the second tube body and the rotation of the second valve core can be controlled by rotation, so that when the first tube body and the second tube body are docked, it is only necessary to plug the first tube body and the second tube body into connection, and then rotate the rotating ring to lock the first tube body and the second tube body, so that the docking of the first tube body and the second tube body is easy and labor-saving.

[0024] 4. In the quick connector of the present invention, a rotatable second valve core is arranged in the second tube body, and after the first tube body and the second tube body are docked and locked, the second valve core rotates 180 degrees, and the second valve core continues to rotate after opening the second valve port and also pushes the first valve core to open the first valve port, thereby completing the connection of the pipeline to be connected. In this way, when connecting, first lock and then connect, and when disconnecting, first cut and then unlock. Regardless of connection or disconnection, it is not necessary to release the pressure of the medium in the pipeline to be connected, and it can realize online connection and disconnection, which is simple and convenient and does not affect the work of other pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1is a cross-sectional view of the second tube body of the present invention;

[0026] Figure 2 For the present invention Figure 1 Sectional view in the AA direction;

[0027] Figure 3 For the present invention Figure 1 Cross-sectional view in the BB direction;

[0028] Figure 4 is an appearance diagram of the rotating ring of the present invention;

[0029] Figure 5 is a cross-sectional view of the first tube body of the present invention;

[0030] Figure 6 For the present invention Figure 5 Cross-sectional view in CC direction;

[0031] Figure 7 is an appearance diagram of the first tube body of the present invention;

[0032] Figure 8 It is a cross-sectional view of the first tube body and the second tube body of the present invention after being plugged together;

[0033] Fig. 9 For the present invention Figure 8 Cross-sectional view in the middle DD direction;

[0034] Fig.10 It is a cross-sectional view of the first tube body and the second tube body of the present invention after they are connected;

[0035] Fig.11 For the present invention Fig.10 Cross-sectional view along the EE direction.

[0036] Figure numerals: 1. first tube body; 11. first valve port; 12. first valve core; 13. return spring; 14. axial slot; 15. circumferential slot; 16. support plate; 17. connecting tube; 18. axial slot; 2. second tube body; 21. second valve port; 22. second valve core; 23. radial rotating shaft; 231. first eccentric slider; 232. second eccentric slider; 24. connecting shaft; 241. third eccentric slider; 242. fourth eccentric slider; 243. eccentric locking block; 25. first locking groove; 26. second locking groove; 3. rotating ring; 31. Y-shaped slide groove; 311. first inclined slide groove; 312. middle positioning groove; 313. second inclined slide groove; 32. annular limit platform; 33. guide block; 34. elastic locking rod. DETAILED DESCRIPTION

[0037] 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, not all of the embodiments. 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.

[0038] Example

[0039] like Figure 1-Figure 11 As shown, this embodiment provides a quick connector, including a first tube body 1 and a second tube body 2, the inner end of the first tube body 1 is detachably sealed and connected to the inner end of the second tube body 2, the outer end of the first tube body 1 is detachably sealed and connected to one end of the pipeline to be connected, and the outer end of the second tube body 2 is detachably sealed and connected to the other end of the pipeline to be connected; the first tube body 1 is provided with a matching first valve port 11 and a first valve core 12; the first valve core 12 is pushed to the first valve port 11 by a return spring 13 axially arranged in the first tube body 1 and closes the first valve port 11; the second tube body 2 is provided with a matching second valve port 21 and a second valve core 22, the second tube body 2 is provided with a radial rotating shaft 23, the second valve core 22 is fixed on the radial rotating shaft 23 and rotates synchronously with the radial rotating shaft 23; the radial rotating shaft 23 A first eccentric slider 231 is fixedly provided on the protruding end of the shaft 23 that passes through the side wall of the second tube body 2, and a rotating ring 3 is coaxially sleeved on the outer side of the second tube body 2. A Y-shaped groove 31 is provided on the inner wall of the rotating ring 3 for the first eccentric slider 231 to slide into and guide the first eccentric slider 231 to rotate around the axis of the radial rotating shaft 23; in the process of the first eccentric slider 231 sliding through the Y-shaped groove 31, the radial rotating shaft 23 drives the second valve core 22 to rotate to open the second valve port 21, and then the second valve core 22 continues to rotate until it contacts and pushes the first valve core 12 to overcome the axial movement of the return spring 13 to open the first valve port 11. When the first valve port 11 is in the open state, when the central axes of the first valve core 12 and the second valve core 22 coincide, the first eccentric slider 231 slides out of the Y-shaped groove 31.

[0040] Through the above arrangement, when installing the quick connector, the first tube body 1 and the second tube body 2 are first detachably sealed and connected, the outer end of the first tube body 1 is connected to one end of the pipeline to be connected, and the outer end of the second tube body 2 is connected to the other end of the pipeline to be connected. At this time, the first valve port 11 in the first tube body 1 is closed by the first valve core 12, and the second valve port 21 in the second tube body 2 is closed by the second valve core 22. Rotate the rotating ring 3. During the rotating process of the rotating ring 3, the first eccentric slider 231 slides on the inner wall of the rotating ring 3. When the first eccentric slider 231 slides through the Y-shaped slide groove 31, the first eccentric slider 231 is guided to rotate around the radial shaft 23, and at the same time drives the radial shaft 23 to rotate. While the radial shaft 23 rotates, it drives the second valve core 22 to rotate. The second valve core 22 rotates to open the second valve port. Then the second valve core 22 continues to rotate until it contacts and pushes the first valve core 12 to overcome the axial movement of the return spring 13 and separate from the first valve port 11, thereby opening the first valve port 11. At this time, the first valve port 11 and the second valve port 21 are both opened to realize the internal conduction of the quick connector and thus realize the connection of the pipeline to be connected. After the first pipe body 1 and the second pipe body 2 are pre-sealed and connected, the first valve core 12 is controlled to move by the rotating ring 3 and drive the second valve core 22 to open the first valve port 11 and the second valve port 21 to connect the pipeline to be connected, thereby avoiding the medium in the pipeline to be connected to be sprayed out when installing the quick connector, and can realize online connection, which is convenient and efficient to install.

[0041] In the quick connector of this embodiment, a protruding annular stopper 32 is provided on the inner wall of the rotating ring 3, and the first eccentric slider 231 slides against the end face of the annular stopper 32. A slot with a flared opening is provided on the end face of the annular stopper 32. A protruding guide block 33 is provided on the inner wall of the rotating ring 3. The guide block 33 is located at the flared opening of the slot, and the guide block 33 cooperates with the flared slot to form a Y-shaped slide groove 31. Through the above arrangement, the first eccentric slider 231 slides against the annular stopper 32, which improves the movement stability of the rotating ring 3. The guide block 33 and the flared slot form a Y-shaped slide groove 31, and the structure is simple.

[0042] In the quick connector of this embodiment, the guide block 33 is an isosceles triangle block structure, the vertex of the guide block 33 faces the flared slot, and the two waist edges of the guide block 33 are respectively opposite to the two side walls of the flared slot, thereby forming a Y-shaped slide groove 31.

[0043] In the quick connector of this embodiment, the Y-shaped slide groove 31 includes a first inclined slide groove 311, an intermediate positioning groove 312, and a second inclined slide groove 313. The first inclined slide groove 311 and the second inclined slide groove 313 are symmetrically located on opposite sides of the intermediate positioning groove 312, respectively. The inner end of the first inclined slide groove 311 is connected to the intermediate positioning groove 312, and the inner end of the second inclined slide groove 313 is connected to the intermediate positioning groove 312. When the first valve port 11 and the second valve port 21 need to be opened, the rotating ring 3 is rotated to make the first eccentric slider 231 slide into the first inclined slide groove 311. During this process, the first eccentric slider 231 drives the radial shaft 23 to rotate. When the first eccentric slider 231 slides to the intermediate positioning groove 312 for positioning, the rotating ring 3 is rotated. The rotating ring 3 drives the first eccentric slider 231 to move so that the radial shaft 23 rotates. When the line connecting the radial shaft 23 and the first eccentric slider 231 is parallel to or even coincides with the second inclined slide groove 313, the first eccentric slider 23 1 disengages from the middle positioning groove 312 and slides into the second inclined groove 313, and the radial shaft 23 continues to rotate. When the first eccentric slider 231 slides out of the second inclined groove 313 and slides against the annular limiting platform 32, the radial shaft 23 stops rotating. During the process of the first eccentric slider 231 sliding through the Y-shaped groove 31, the radial shaft 23 drives the second valve core 22 to rotate 180 degrees, thereby opening the second valve port 21, and then pushes the first valve core 12 to move to open the first valve port 11, so that the first pipe body 1 and the second pipe body 2 are connected, thereby connecting the pipeline to be connected.

[0044] In the quick connector of this embodiment, one end of the guide block 33 extends axially to protrude the annular limit platform 32 so that the first eccentric slider 231 slides into the Y-shaped slot 31. Through the above arrangement, the inlet of the Y-shaped slot 31 extends to the sliding path of the first eccentric slider 231, so that the first eccentric slider 231 slides into the Y-shaped slot 31, thereby improving the matching accuracy between the first eccentric slider 231 and the Y-shaped slot 31.

[0045] In the quick connector of this embodiment, a second eccentric slider 232 is provided on the protruding end of the radial shaft 23, and the first eccentric slider 231 and the second eccentric slider 232 are respectively located on the opposite sides of the protruding end, and the second eccentric slider 232 slides and abuts on the end surface of the annular limit platform 32. When the first eccentric slider 231 slides through the Y-shaped slide groove 31, the second eccentric slider 232 detaches from the annular limit platform 32 and bypasses the outside of the guide block 33 and then slides and abuts on the annular limit platform 32.

[0046] Through the above-mentioned arrangement, when the first eccentric slider 231 has not passed through the Y-shaped slide groove 31, the first eccentric slider 231 and the second eccentric slider 232 both slide and abut on the end surface of the annular limit platform 32. In the process of the first eccentric slider 231 sliding through the Y-shaped slide groove 31, the second eccentric slider 232 detaches from the annular limit platform 32 and bypasses the outside of the guide block 33 and then slides and abuts on the annular limit platform 32. The second eccentric slider 232 cooperates with the first eccentric slider 231, thereby avoiding the situation where the first eccentric slider 231 does not rotate around the radial shaft 23, thereby improving the rotation accuracy of the radial shaft 23.

[0047] In the quick connector of this embodiment, a rotatable connecting shaft 24 is penetrated through the side wall of the second tube body 2, and a third eccentric slider 241 is fixedly arranged or integrally arranged on the outer end of the connecting shaft 24 extending out of the second tube body 2, and an eccentric locking block 243 is fixedly arranged on one end of the connecting shaft 24 extending out of the second tube body 2; an axial slot 14 and a circumferential slot 15 are provided at the end of the first tube body 1, and the outer end of the axial slot 14 passes through the end of the first tube body 1, and the inner end of the axial slot 14 is connected with one end of the circumferential slot 15; the first tube body 1 and the second tube body 2 are plugged and fixed, and the eccentric locking block 243 is limited at the inner end of the axial slot 14; the third eccentric slider 241 is located at the front of the locking direction of the rotating ring 3 On the side, the first eccentric slider 231 is located at the rear side of the locking direction of the rotating ring 3 so that the third eccentric slider 241 first passes through the Y-shaped slot 31 to realize the sealed connection between the first tube body 1 and the second tube body 2, and the first eccentric slider 231 then passes through the Y-shaped slot 31 to realize the opening of the first valve port 11 and the second valve port 21; the third eccentric slider 241 cooperates and slides against the annular limit platform 32, and the third eccentric slider 241 drives the connecting shaft 24 to rotate during the process of sliding through the Y-shaped slot 31, and the rotation of the connecting shaft 24 drives the eccentric locking block 243 to rotate, and when the eccentric locking block 243 rotates from the inner end of the axial slot 14 to the circumferential slot 15, the third eccentric slider 241 slides out of the Y-shaped slot 31.

[0048] Through the above arrangement, during the plug-in connection and sealing process of the first tube body 1 and the second tube body 2, the third eccentric slider 241 first enters the inner end of the axial slot 14, that is, the connection between the axial slot 14 and the circumferential slot 15. During the rotation of the rotating ring 3 until the third eccentric slider 241 slides through the Y-shaped slot 31, the third eccentric slider 241 drives the connecting shaft 24 to rotate around the axis of the connecting shaft 24, and the connecting shaft 24 drives the eccentric locking block 243 to rotate synchronously until the eccentric locking block 243 disengages from the axial slot 14 and enters the other end of the circumferential slot 15, thereby locking the first tube body 1 and the second tube body 2 to prevent the first tube body 1 and the second tube body 2 from separating. The structure is simple and the operation is convenient.

[0049] In the quick connector of this embodiment, after the first tube body 1 and the second tube body 2 are locked, the rotating ring 3 continues to rotate to drive the first eccentric slider 231 to pass through the Y-shaped sliding groove 31 to open the first valve port 11 and the second valve port 21.

[0050] In the quick connector of this embodiment, a fourth eccentric slider 242 is fixedly provided on the outer end of the connecting shaft 24, and the third eccentric slider 241 and the fourth eccentric slider 242 are respectively located on the opposite sides of the connecting shaft 24, and the fourth eccentric slider 242 slides and abuts on the end face of the annular limit platform 32. When the third eccentric slider 241 slides through the Y-shaped slide groove 31, the fourth eccentric slider 242 detaches from the annular limit platform 32 and bypasses the outside of the guide block 33 and then slides and abuts on the annular limit platform 32.

[0051] Through the above-mentioned arrangement, the fourth eccentric slider 242 cooperates with the third eccentric slider 241. When the third eccentric slider 241 passes through the Y-shaped slide groove 31, the fourth eccentric slider 242 bypasses the outside of the guide block 33, so that the connecting shaft 24 rotates around its axis, thereby ensuring that the connecting shaft 24 can rotate and improving the rotation effectiveness of the connecting shaft 24.

[0052] In the quick connector of this embodiment, a support plate 16 is detachably fixedly arranged in the first tube body 1, a first valve core 12 is movably penetrated at the center of the support plate 16, and the return spring 13 is arranged between the first valve core 12 and the support plate 16. The arrangement of the support plate 16 facilitates disassembly and assembly, and reduces manufacturing cost and maintenance cost.

[0053] In the quick connector of this embodiment, a connecting pipe 17 is inserted and fixed at one end of the first pipe body 1, and the connecting pipe 17 is used to connect to the pipe to be connected, and the support plate 16 is clamped and fixed between the inner end of the connecting pipe 17 and the inner end surface of the first pipe body 1. Through the above arrangement, the connecting pipe 17 can be used to connect to the pipe to be connected, and the support plate 16 can be positioned in the first pipe body 1 by abutment, which has a simple structure, diverse functions and low manufacturing cost.

[0054] In the quick connector of this embodiment, an axial slot 18 is provided on the first tube body 1, and the radial shaft 23 is fitted and limited in the axial slot 18. Through the above arrangement, the radial shaft 23 and the axial slot 18 cooperate to prevent the first tube body 1 and the second tube body 2 from rotating relative to each other, so that the forces of the first tube body 1 and the second tube body 2 are balanced, thereby improving the connection stability of the first tube body 1 and the second tube body 2.

[0055] In the quick connector of this embodiment, an elastic locking rod 34 is provided on the rotating ring 3, and a first locking groove 25 and a second locking groove 26 which cooperate with the elastic locking rod 34 to lock are provided on the outer side wall of the second tube body 2. In a natural state, the elastic locking rod 34 is inserted into the first locking groove 25 or the second locking groove 26 to lock; when the elastic locking rod 34 is inserted into the first locking groove 25 to lock, the second valve core 22 is located on one side of the radial rotating shaft 23 and closes the second valve port 21; when the elastic locking rod 34 is inserted into the second locking groove 26 to lock, the second valve core 22 opens the second valve port 21 and is located on the other side opposite to the radial rotating shaft 23.

[0056] With the above arrangement, when the second valve port 21 of the second tube body 2 is in the closed state, the elastic locking rod 34 is aligned with the first locking groove 25 and automatically extends into the first locking groove 25 to lock the rotating ring 3. When the rotating ring 3 needs to be rotated, the elastic locking rod 34 is pulled outward so that the elastic locking rod 34 disengages from the first locking groove 25 to release the locked state of the rotating ring 3. The rotating ring 3 is rotated until the first valve port 11 and the second valve port 21 are opened and the axes of the first valve core 12 and the second valve core 22 coincide with each other, the opening of the first valve port 11 and the second valve port 21 is maximum, the elastic locking rod 34 is aligned with the second locking groove 26 and automatically extends into the second locking groove 26 to lock the rotating ring 3, and the rotating ring 3 cannot rotate, thereby realizing the connection of the pipeline to be connected. The structure is simple, the operation is convenient, and the locking stability is good.

[0057] In the quick connector of this embodiment, the specific working principle is as follows:

[0058] like Figure 1 and Figure 5The figure shows the internal structure of the male connector and the female connector of a quick connector of the present invention. When the quick connector is used to connect the pipeline, one side of the pipeline needs to be connected to one end of the first tube body 1, and the other side of the pipeline needs to be connected to one end of the second tube body 2. When the first tube body 1 and the second tube body 2 need to be connected, the first tube body 1 is first inserted into the second tube body 2 so that the radial shaft 23 enters the axial slot 18, and the eccentric locking block 243 enters the inner end of the axial slot 14 to complete the plug-in connection between the first tube body 1 and the second tube body 2. Then, the elastic locking rod 34 is pulled outward to withdraw the elastic locking rod 34 from the first locking slot 25 to unlock the rotating ring 3, and the rotating ring 3 is rotated clockwise. Since the third eccentric slider 241 and the fourth eccentric slider 242 are in sliding contact with the annular limit platform 32, the connecting shaft 24 remains stationary during the rotation of the rotating ring 3. When the third eccentric slider 241 enters the Y-shaped slot 31, the third eccentric slider 241 and the fourth eccentric slider 242 rotate around the connecting shaft 24, driving the connecting shaft 24 and the eccentric locking block 243 to rotate to the circumferential slot 15 and lock. When the third eccentric slider 241 slides out of the Y-shaped slot 31 and slides with the annular limit platform 32 again, the fourth eccentric slider 242 also slides with the annular limit platform 32 again. When the eccentric locking block 243 slides through the Y-shaped slot 31, the eccentric locking block 243 rotates 180 degrees around the connecting shaft 24 and enters the circumferential slot 15 and locks, thereby locking the first tube body 1 and the second tube body 2 together. The rotating ring 3 is continuously rotated so that the first eccentric slider 231 slides through the Y-shaped slide groove 31, driving the radial rotating shaft 23 to rotate, and the rotation of the radial rotating shaft 23 drives the second valve core 22 to rotate 180 degrees, opening the second valve port 21 and pushing the first valve core 12 to overcome the return spring 13 and move to the right, thereby opening the first valve port 11, and the first tube body 1 and the second tube body 2 form a passage to connect the pipeline to be connected. When the rotating ring 3 rotates 360 degrees clockwise, the elastic locking rod 34 is aligned with the second locking groove 26 and automatically extends into the second locking groove 26 to lock the rotating ring 3, completing the docking of the first tube body 1 and the second tube body 2.

[0059] When it is necessary to disassemble the first tube body 1 and the second tube body 2, the elastic locking rod 34 is pulled outward to release the lock of the rotating ring 3, and then the rotating ring 3 is rotated counterclockwise. First, the first eccentric slider 231 passes through the Y-shaped slot 31 to control the second valve core 22 to flip 180 degrees, so that the second valve port 21 is closed by the second valve core 22, and the first valve core 12 automatically rebounds under the action of the return spring 13 to close the first valve port 11, and the rotating ring 3 continues to be rotated counterclockwise so that the third eccentric slider 241 passes through the Y-shaped slot 31 to control the eccentric locking block 243 to rotate 180 degrees and enter the axial slot 14, thereby releasing the lock of the first tube body 1 and the second tube body 2, and the first tube body 1 and the second tube body 2 are pulled outward to remove the first tube body 1 and the second tube body 2. After the rotating ring 3 rotates counterclockwise for one circle, the elastic locking rod 34 is aligned with the first locking groove 25 and automatically extends into the first locking groove 25 to lock the rotating ring 3, completing the cutting of the pipeline to be connected.

[0060] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention, and various changes should be included in the protection scope of the present invention.

Claims

1. A quick connector, characterized in that: The device comprises a first tube body (1) and a second tube body (2), wherein the inner end of the first tube body (1) is detachably sealed to the inner end of the second tube body (2), the outer end of the first tube body (1) is detachably sealed to one end of a pipe to be connected, and the outer end of the second tube body (2) is detachably sealed to the other end of the pipe to be connected; A first valve port (11) and a first valve core (12) are provided in the first tube body (1); the first valve core (12) is pushed to the first valve port (11) by a return spring (13) axially provided in the first tube body (1) and closes the first valve port (11); a second valve port (21) and a second valve core (22) are provided in the second tube body (2); a radial rotating shaft (23) is provided in the second tube body (2); and the second valve core (22) is fixedly provided with a radial rotating shaft (23). The first eccentric slider (231) is fixed on the radial rotating shaft (23) and rotates synchronously with the radial rotating shaft (23); a first eccentric slider (231) is fixedly arranged on the protruding end of the radial rotating shaft (23) that passes through the side wall of the second tube body (2); a rotating ring (3) is coaxially sleeved on the outer side of the second tube body (2); a Y-shaped sliding groove (31) is provided on the inner wall of the rotating ring (3) for the first eccentric slider (231) to slide into and guide the first eccentric slider (231) to rotate around the axis of the radial rotating shaft (23); When the first eccentric slider (231) slides through the Y-shaped slide groove (31), the radial rotating shaft (23) drives the second valve core (22) to rotate to open the second valve port (21), and then the second valve core (22) continues to rotate until it contacts and pushes the first valve core (12) to overcome the return spring (13) and move axially to open the first valve port (11). When the first valve port (11) is open, when the central axes of the first valve core (12) and the second valve core (22) coincide, the first eccentric slider (231) slides out of the Y-shaped slide groove (31).

2. The quick connector according to claim 1, characterized in that: The inner wall of the rotating ring (3) is provided with a protruding annular limiting platform (32), the first eccentric slider (231) slides against the end face of the annular limiting platform (32), the end face of the annular limiting platform (32) is provided with a slot with an expanded opening, and the inner wall of the rotating ring (3) is provided with a protruding guide block (33), the guide block (33) is located at the expanded opening of the slot and cooperates with the slot to form the Y-shaped sliding groove (31).

3. The quick connector according to claim 2, characterized in that: One end of the guide block (33) extends axially and protrudes from the annular limit platform (32) so that the first eccentric sliding block (231) slides into the Y-shaped sliding groove (31).

4. The quick connector according to claim 2, characterized in that: A second eccentric slider (232) is arranged on the protruding end of the radial rotating shaft (23), the first eccentric slider (231) and the second eccentric slider (232) are respectively located on opposite sides of the protruding end, and the second eccentric slider (232) slides and contacts the end surface of the annular limit platform (32). When the first eccentric slider (231) slides through the Y-shaped slide groove (31), the second eccentric slider (232) detaches from the annular limit platform (32) and bypasses the outside of the guide block (33) and then slides and contacts the annular limit platform (32).

5. The quick connector according to claim 2, characterized in that: A rotatable connecting shaft (24) is passed through the side wall of the second tube body (2); a third eccentric sliding block (241) is provided at the outer end of the connecting shaft (24) extending from the second tube body (2); an eccentric locking block (243) is fixedly provided at one end of the connecting shaft (24) extending from the inside of the second tube body (2); an axial slot (14) and a circumferential slot (15) are provided at the end of the first tube body (1); the outer end of the axial slot (14) passes through the end of the first tube body (1); the inner end of the axial slot (14) is communicated with one end of the circumferential slot (15); the first tube body (1) and The second tube body (2) is plugged and fixed, and the eccentric locking block (243) is limited in the inner end of the axial slot (14); the third eccentric slider (241) is located on the front side of the locking direction of the rotating ring (3), and the first eccentric slider (231) is located on the rear side of the locking direction of the rotating ring (3), so that the third eccentric slider (241) first passes through the Y-shaped slide groove (31) to achieve a sealed connection between the first tube body (1) and the second tube body (2), and the first eccentric slider (231) then passes through the Y-shaped slide groove (31) to achieve the opening of the first valve port (11) and the second valve port (21); The third eccentric slider (241) cooperates to slide against the annular limit platform (32). When the third eccentric slider (241) slides through the Y-shaped slide groove (31), it drives the connecting shaft (24) to rotate. The rotation of the connecting shaft (24) drives the eccentric locking block (243) to rotate. When the eccentric locking block (243) rotates from the inner end of the axial slot (14) to the circumferential slot (15), the third eccentric slider (241) slides out of the Y-shaped slide groove (31).

6. The quick connector according to claim 5, characterized in that: A fourth eccentric slider (242) is fixedly arranged at the outer end of the connecting shaft (24); the third eccentric slider (241) and the fourth eccentric slider (242) are respectively located on opposite sides of the connecting shaft (24); the fourth eccentric slider (242) slides against the end surface of the annular limit platform (32); when the third eccentric slider (241) slides through the Y-shaped slide groove (31), the fourth eccentric slider (242) detaches from the annular limit platform (32) and bypasses the outside of the guide block (33) and then slides against the annular limit platform (32).

7. The quick connector according to any one of claims 1 to 6, characterized in that: A support disk (16) is detachably fixedly arranged in the first tube body (1), a first valve core (12) is movably inserted into the center of the support disk (16), and a return spring (13) is arranged between the first valve core (12) and the support disk (16).

8. The quick connector according to claim 7, characterized in that: A connecting pipe (17) is inserted and fixed at one end of the first pipe body (1), and the connecting pipe (17) is used to connect to the pipeline to be connected. The support plate (16) is clamped and fixed between the inner end of the connecting pipe (17) and the inner end surface of the first pipe body (1).

9. The quick connector according to any one of claims 1 to 6, characterized in that: An axial slot (18) is provided on the first tube body (1), and the radial rotating shaft (23) is fitted and limited in the axial slot (18).

10. The quick connector according to any one of claims 1 to 6, characterized in that: An elastic locking rod (34) is arranged on the rotating ring (3), and a first locking groove (25) and a second locking groove (26) which cooperate with the elastic locking rod (34) to lock are arranged on the outer side wall of the second tube body (2). In a natural state, the elastic locking rod (34) cooperates to be inserted into the first locking groove (25) or the second locking groove (26) to be locked; when the elastic locking rod (34) cooperates to be inserted into the first locking groove (25) to be locked, the second valve core (22) is located on one side of the radial rotating shaft (23) and closes the second valve port (21); when the elastic locking rod (34) cooperates to be inserted into the second locking groove (26) to be locked, the second valve core (22) opens the second valve port (21) and is located on the other side opposite to the radial rotating shaft (23).

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