A stable and convenient quick pipe connector

Abstract

The present invention discloses a stable and convenient quick pipe connector, comprising a connector housing, a sealing assembly and a locking tube assembly. The connector housing is provided with one or more quick connection ports, and the quick connection ports are covered with the sealing assembly and the locking tube assembly. An inner ring cover for fixing the sealing assembly is provided at the end face of the connector housing, and the locking tube assembly comprises an outer ring cover, an unlocking ring, an open-loop steel tooth claw and an open claw support ring. An oblique climbing structure is provided on the outer ring cover and the unlocking ring, and the oblique climbing structure comprises a fixed oblique surface and a dynamic oblique surface, and the dynamic oblique surface cooperates with the oblique cutting of the fixed oblique surface. The pipe connector can prevent the inserted pipe from being scratched by the steel tooth claw during the installation and disassembly process, and the oblique climbing structure can reduce the operating distance required for the pipe connector during the installation and disassembly operation of the pipe, and reduce the unlocking force required for disassembling the pipe. The installation and disassembly operation of the pipe is simple and convenient, the internal structure is stable, and the fixing effect of the pipe is good.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline connectors, in particular to a stable and convenient quick pipeline connector. Background Art

[0002] Most of the existing quick pipe connectors use a locking assembly at the connection end to fix the pipe in position. Among the locking assemblies used to fix the pipe on the quick pipe connector, one locking assembly uses a clamping claw to clamp the pipe to fix the pipe. Although this method has a good connection effect on the pipe, it is easy to scratch the outer wall of the pipe.

[0003] The Chinese invention with publication number: CN113606408A discloses a compact and stable quick pipe connector, which is matched with an outer ring cover by a screw cap thread match, and the screw cap is moved to the claw ring by rotating the screw cap, and the claws on the claw ring are squeezed by the screw cap, thereby controlling the clamping or loosening of the pipe by the claws; this operation method requires a long operation distance on the pipe connector, and requires more raw materials to produce the quick pipe connector. If the threaded section between the screw cap and the outer ring cover is damaged, it may cause a jam, and the quick insertion and insertion operation of the pipe cannot be normally realized;

[0004] Therefore, it is necessary to design a stable and convenient quick pipe connector. Summary of the invention

[0005] In view of the above-mentioned technical deficiencies, the present invention provides a pipeline connector that can prevent pipes from being scratched by steel teeth during installation and disassembly. The bevel climbing structure can reduce the operating distance required for the pipe connector during pipe installation and disassembly operations, and reduce the unlocking force required for disassembling the pipe. The installation and disassembly operations of the pipes are simple and convenient, the internal structure is stable, and the fixing effect of the pipes is good.

[0006] To achieve the above object, the present invention is implemented through the following technical solutions:

[0007] A stable and convenient quick pipe connector, comprising a connector housing, a sealing assembly and a locking tube assembly, wherein the connector housing is provided with one or more quick connection ports, each of the quick connection ports is provided with a matching groove on the inner wall thereof connected to the end face of the connector housing, and the quick connection ports are sleeved with the sealing assembly and the locking tube assembly;

[0008] The matching groove is composed of a socket with a smaller inner diameter and a sealing groove with a larger inner diameter. The socket is arranged in the middle of the connector housing for inserting and inserting the pipe. The sealing groove is arranged on one side of the port in the connector housing. A sealing assembly is placed in the sealing groove. An inner ring cover for fixing the sealing assembly is arranged at the end surface of the connector housing.

[0009] The lock tube assembly comprises an outer ring cover, an unlocking ring, an open-loop steel tooth claw and an open-loop claw support ring, wherein the outer ring cover is arranged on the end surface of the inner ring cover, the unlocking ring is fitted in a side of the outer ring cover away from the connector housing, the open-loop steel tooth claw is located in a side of the outer ring cover close to the connector housing, and an open-loop claw support ring is arranged at the end surface of the open-loop steel tooth claw away from the inner ring cover;

[0010] The outer ring cover and the unlocking ring are provided with a bevel climbing structure, and the bevel climbing structure includes a fixed bevel surface and a dynamic bevel surface. A step portion is provided on the inner wall of one end of the outer ring cover, and a wall surface of the step portion away from the outer end surface of the outer ring cover is circumferentially provided with a plurality of fixed bevel surfaces. The outer wall of the unlocking ring is provided with an annular convex edge, and a wall surface of the annular convex edge close to the outer port of the unlocking ring is circumferentially provided with a plurality of dynamic bevel surfaces. The dynamic bevel surface and the fixed bevel surface are formed into a bevel fit through the relative movement of the bevel surface of the dynamic bevel surface and the bevel surface of the fixed bevel surface during the rotation of the unlocking ring, and the plane of the dynamic bevel surface away from the open-loop steel tooth claw is against two different planes in the fixed bevel surface, so that the dynamic bevel surface and the fixed bevel surface form a bevel fit, thereby realizing the axial movement of the unlocking ring in the pipeline connector and the squeezing or non-squeezing of the claw by the end of the unlocking ring close to the open-loop steel tooth claw.

[0011] Further, the plane of the fixed bevel cut surface includes a first plane and a second plane, the bevel of the fixed bevel cut surface is a first slope surface, the middle part of the fixed bevel cut surface is the first plane, the stepped wall surface between two adjacent fixed bevel cut surfaces is provided with a second plane, the fixed bevel cut surfaces on both sides of the first plane transition to the second plane through the first slope surface, the distance length from the first plane to the end face of the open-loop steel tooth claw is less than the distance length from the second plane to the end face of the open-loop steel tooth claw, the plane of the dynamic bevel cut surface includes a third plane and a fourth plane, the bevel of the dynamic bevel cut surface is the second slope surface, the middle part of the dynamic bevel cut surface is the third plane, the annular convex edge wall surface between two adjacent dynamic bevel cut surfaces is provided with a fourth plane, the dynamic bevel cut surfaces on both sides of the third plane transition to the fourth plane through the second slope surface, the distance length from the third plane to the end face of the open-loop steel tooth claw is greater than the distance length from the fourth plane to the end face of the open-loop steel tooth claw.

[0012] Further, the plane of the fixed bevel cut surface includes a fifth plane and a sixth plane, the inclined surface of the fixed bevel cut surface is the third slope surface, the middle part of the fixed bevel cut surface is the third slope surface, and the fixed bevel cut surfaces outside the two sides of the third slope surface are respectively provided with a fifth plane and a sixth plane, the fifth plane and the sixth plane are both skew and parallel in the same fixed bevel cut surface, the fifth plane and the sixth plane at the transition point of two adjacent fixed bevel cut surfaces are skew and parallel to each other, the transition point of two adjacent fixed bevel cut surfaces is a stepped structure, and the distance from the fifth plane to the end face of the open-loop steel tooth claw is shorter than the distance from the sixth plane to the end face of the open-loop steel tooth claw. The plane of the dynamic bevel cut surface includes a seventh plane and an eighth plane, the bevel of the dynamic bevel cut surface is a fourth slope surface, the middle part of the dynamic bevel cut surface is the fourth slope surface, and the dynamic bevel cut surfaces outside the fourth slope surface on both sides are respectively provided with a seventh plane and an eighth plane, the seventh plane and the eighth plane are skew and parallel in the same fixed bevel cut surface, the seventh plane and the eighth plane at the transition point of two adjacent fixed bevel cut surfaces are skew and parallel to each other, the transition point of two adjacent dynamic bevel cut surfaces is a stepped structure, and the distance from the seventh plane to the end face of the open-loop steel tooth claw is greater than the distance from the eighth plane to the end face of the open-loop steel tooth claw.

[0013] Furthermore, a plurality of unlocking portions for cooperating with a tool are circumferentially arranged on the outer end surface of the unlocking ring, and the plurality of unlocking portions are composed of one or both of grooves and protrusions.

[0014] Furthermore, the inner wall of the outer ring cover away from the stepped portion is provided with a first conical necking, the radius of which gradually decreases in the direction approaching the inner ring cover, and one end of the open claw support ring is conical and abuts against the first conical necking.

[0015] Furthermore, the non-conical end edge in the open claw support ring is transitioned through a rounded corner, and an inwardly curved flange is provided at the edge of the open-loop steel tooth claw close to the open claw support ring side, and the open-loop steel tooth claw is fitted on the other end of the open claw support ring through the flange, and a plurality of positioning fasteners are circumferentially provided on the flange, and a plurality of positioning grooves are circumferentially provided on the outer wall of the conical end of the open claw support ring, and the positioning fasteners are fitted in the positioning grooves, and the width of the portion of the positioning groove away from the rounded corner is greater than the width of the portion of the positioning groove close to the rounded corner, and the width of the positioning fastener close to the unlocking ring side is greater than the width of the positioning fastener away from the unlocking ring side.

[0016] Furthermore, the open-loop steel tooth claw is provided with a plurality of elastic support arms, and one end surface of the elastic support arm abuts against the end surface of the inner ring cover.

[0017] The beneficial effects of the present invention are:

[0018] Both the open-loop steel tooth claw and the open-claw support ring are provided with an opening structure and have elastic deformation capability. When the pipes are connected and fixed, the inserted pipes squeeze the open-loop steel tooth claw and the open-claw support ring, which can make the open-loop steel tooth claw and the open-claw support ring as a whole expand outward to make way when subjected to the outward squeezing force of the inserted pipe, thereby making room for the inserted pipe to be inserted, while always maintaining the tightening force of the steel teeth on the surface of the inserted pipe, thereby better accommodating and locking pipes with different pipe diameter tolerances. In addition, after the inserted pipes are removed, the open-loop steel tooth claw and the open-claw support ring can restore the original tightening state through elastic deformation, making it convenient to insert the pipe again.

[0019] The open jaw support ring is provided with a second conical necking, and the inner side of the outer ring cover matched therewith is provided with a first conical necking which is against the second conical necking. The first conical necking forms a necking structure, and the open jaw support ring together with the open-loop steel tooth jaw and the outer ring cover form a tube locking structure similar to the principle of expansion screws. The inserted pipe is clamped by the open-loop steel tooth jaw. When the pipe is under pressure, the pipe will be subjected to two pressures of radial expansion and axial outward push. When the pipe is extruded outward, it is clamped and locked by the steel teeth. At this time, the open jaw support ring, the open-loop steel tooth jaw and the pipe will move as a whole toward the port direction of the pipe connector, and the second conical necking on the open jaw support ring continues to approach the necking part with a smaller radius on the outer ring cover, so that the pipe is locked tighter and tighter, thereby improving the reliability of tube locking and facilitating the application of pipes with different pipe diameter tolerances.

[0020] By rotating the unlocking ring to cause the unlocking ring to move axially, the unlocking ring can be in two states: squeezing the steel teeth (unlocked state) or detaching from the steel teeth (locked state). When the unlocking ring squeezes the steel teeth, the steel teeth will expand outward and force the steel teeth and the surface of the inserted pipe to be isolated. At this time, the quick pipe connector is in the unlocked state. In the unlocked state, the pipe can be easily removed or inserted, and no matter whether the pipe is removed or inserted, the outer surface of the inserted pipe will not contact the steel teeth, so no scratches from the steel teeth will be left, which facilitates easy installation and removal of the pipe and reuse.

[0021] The bevel climbing structure provided on the outer ring cover and the unlocking ring can lock or unlock the pipe by the bevel cooperation between the dynamic bevel surface and the fixed bevel surface. The unlocking ring is rotated to unlock, and the unlocking can be completed within half a circle. The operation of locking or unlocking the pipe is more convenient and can reduce the operating distance required for the pipe connector during pipe installation and disassembly. At the same time, this bevel climbing structure is also a more labor-saving unlocking structure. The force required for rotational unlocking can easily reach one-fourth of the force required for axial vertical downward unlocking or even less, which is convenient and easy to unlock and dismantle the pipe, and is particularly suitable for solving the problem of difficulty in unlocking and dismantling large-diameter pipes (such as outer diameters of 40mm, 50mm and larger pipes).

[0022] The open claw support ring and the open-loop steel tooth claw are matched with each other through the positioning fastener and the positioning groove. At the same time, the cooperation between the flange on the open-loop steel tooth claw and the open claw support ring can play a positioning role for the open-loop steel tooth claw. Through the offset effect of the first bevel and the second bevel and the offset effect of the elastic support arm and the end face of the positioning ring, the position of the open-loop steel tooth claw is more stable when the pipeline connector is used for pipeline connection, and it is not easy to shift the position, thereby avoiding the situation where the pipeline cannot be normally inserted into the pipeline connector due to the offset of the position of the open-loop steel tooth claw. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the external structure of the pipeline connector in Example 1.

[0024] Figure 2 Schematic diagram of the internal structure of the pipe connector in Example 1.

[0025] Figure 3 It is a schematic structural diagram of the connector housing in the first embodiment.

[0026] Figure 4 It is a schematic structural diagram of one side of the outer ring cover in the first embodiment.

[0027] Figure 5 It is a schematic diagram of the structure of the other side of the outer ring cover in the first embodiment.

[0028] Figure 6 This is a schematic diagram of the structure of the unlocking ring in the first embodiment.

[0029] Figure 7 It is a structural schematic diagram of the oblique climbing structure when the pipeline connector in the first embodiment is in the unlocked state.

[0030] Figure 8 It is a structural schematic diagram of the oblique climbing structure when the pipeline connector in the first embodiment is in the pipe locking state.

[0031] Fig. 9 This is a schematic diagram of the external structure of the pipeline connector in the second embodiment.

[0032] Fig.10 Schematic diagram of the internal structure of the pipeline connector in the second embodiment.

[0033] Fig.11 It is a schematic diagram of the structure of the connector housing in the second embodiment.

[0034] Fig.12 It is a schematic structural diagram of one side of the outer ring cover in the second embodiment.

[0035] Fig.13 It is a schematic diagram of the structure of the other side of the outer ring cover in the second embodiment.

[0036] Fig.14 This is a schematic diagram of the unlocking ring structure when the unlocking portion in the second embodiment is a groove.

[0037] Fig.15 Schematic diagram of the unlocking ring structure when the unlocking portion is a protrusion in the second embodiment.

[0038] Fig.16 It is a structural schematic diagram of the oblique climbing structure when the pipeline connector in the second embodiment is in the unlocked state.

[0039] Fig.17 It is a structural schematic diagram of the oblique climbing structure when the pipeline connector in the second embodiment is in the pipe locking state.

[0040] Fig.18 It is a schematic diagram of the structure of the open-loop steel tooth claws in Example 1 and Example 2.

[0041] Fig.19 It is a schematic diagram of the structure of the open claw support ring in Example 1 and Example 2.

[0042] In the figure, connector housing 1, quick connection port 2, mating groove 3, sealing assembly 4, inner ring cover 5, outer ring cover 6, unlocking ring 7, open-ring steel tooth claw 8, open claw support ring 9, fixed bevel surface 10, dynamic bevel surface 11, step portion 12, annular flange 13, unlocking portion 18, first conical necking 19, flange 21, positioning fastener 22, positioning groove 23, elastic support arm 26, socket slot 27, sealing groove 28. DETAILED DESCRIPTION

[0043] Embodiment 1:

[0044] like Figures 1 to 8 , Fig.18 and Fig.19 As shown in combination, a stable and convenient quick pipe connector includes a connector housing 1, a sealing assembly 4 and a locking tube assembly, wherein the connector housing 1 is provided with one or more quick connection ports 2, and the inner wall of each of the quick connection ports 2 is provided with a matching groove 3 connected to the end face of the connector housing 1, and the quick connection port 2 is sleeved with a sealing assembly 4 and a locking tube assembly;

[0045] The matching groove 3 is composed of a socket groove 27 with a smaller inner diameter and a sealing groove 28 with a larger inner diameter. The socket groove 27 is arranged in the middle of the connector housing 1 for inserting and plugging the pipe. The sealing groove 28 is arranged on one side of the port in the connector housing 1. A sealing assembly 4 is placed in the sealing groove 28.

[0046] An inner ring cover 5 for fixing the sealing assembly 4 is provided at the end surface of the connector housing 1, and the lock tube assembly comprises an outer ring cover 6, an unlocking ring 7, an open-loop steel tooth claw 8 and an open claw support ring 9. The outer ring cover 6 is arranged on the end surface of the inner ring cover 5, and the unlocking ring 7 is fitted in the side of the outer ring cover 6 away from the connector housing 1, and the open-loop steel tooth claw 8 is located in the side of the outer ring cover 6 close to the connector housing 1, and an open claw support ring 9 is provided at the end surface of the open-loop steel tooth claw 8 away from the inner ring cover 5;

[0047] The outer ring cover 6 and the unlocking ring 7 are provided with an oblique climbing structure, and the oblique climbing structure includes a fixed oblique surface 10 and a dynamic oblique surface 11. A step portion 12 is provided on the inner wall of one end of the outer ring cover 6, and the step portion 12 is circumferentially provided with a plurality of fixed oblique surfaces 10 on the wall surface away from the outer end surface of the outer ring cover 6. The outer wall of the unlocking ring 7 is provided with an annular flange 13, and the annular flange 13 is circumferentially provided with a plurality of dynamic oblique surfaces 11 on the wall surface close to the outer port of the unlocking ring 7, and the dynamic oblique surface 11 is beveled and matched with the fixed oblique surface 10.

[0048] The middle part of the fixed beveled surface 10 is a first plane, and the wall surface of the step portion 12 between two adjacent fixed beveled surfaces 10 is provided with a second plane. The fixed beveled surfaces 10 on both sides of the first plane transition to the second plane through the first slope surface, and the distance length from the first plane to the end face of the open-loop steel tooth claw 8 is less than the distance length from the second plane to the end face of the open-loop steel tooth claw 8. The middle part of the dynamic beveled surface 11 is a third plane, and the wall surface of the annular convex edge 13 between two adjacent dynamic beveled surfaces 11 is provided with a fourth plane. The dynamic beveled surfaces 11 on both sides of the third plane transition to the fourth plane through the second slope surface, and the distance length from the third plane to the end face of the open-loop steel tooth claw 8 is greater than the distance length from the fourth plane to the end face of the open-loop steel tooth claw 8.

[0049] A plurality of unlocking portions 18 for cooperating with a tool are circumferentially arranged at the outer end surface of the unlocking ring 7, and the plurality of unlocking portions 18 are composed of grooves and protrusions.

[0050] The inner wall of the outer ring cover 6 away from the stepped portion 12 is provided with a first conical necking 19 , the radius of which gradually decreases in the direction approaching the inner ring cover 5 , and one end of the open claw support ring 9 is conical in shape and abuts against the first conical necking 19 .

[0051] The non-conical end edge of the open claw support ring 9 is transitioned through a rounded corner, and an inwardly curved flange 21 is provided at the edge of the open-loop steel tooth claw 8 near the side of the open claw support ring 9. The open-loop steel tooth claw 8 is fitted on the other end of the open claw support ring 9 through the flange 21, and a plurality of positioning fasteners 22 are circumferentially provided on the flange 21. A plurality of positioning grooves 23 are circumferentially provided on the outer wall of the conical end of the open claw support ring 9. The positioning fastener 22 is fitted in the positioning groove 23, and the width of the portion of the positioning groove 23 away from the rounded corner is greater than the width of the portion of the positioning groove 23 near the rounded corner, and the width of the positioning fastener 22 near the unlocking ring 7 side is greater than the width of the positioning fastener 22 away from the unlocking ring 7 side.

[0052] The open-loop steel tooth claw 8 is provided with a plurality of elastic supporting arms 26 , and one end surface of the elastic supporting arm 26 abuts against the end surface of the inner ring cover 5 .

[0053] When the pipe is not installed in the pipe connector, if the third plane in the middle of the moving bevel surface 11 and the first plane in the middle of the fixed bevel surface 10 are offset, Figure 8 It can be seen that, due to the relative positions of the dynamic chamfered surface and the fixed chamfered surface, the length of the whole formed by the two in the pipeline connector in the axial direction of the pipeline connector reaches the maximum, so the end of the unlocking ring 7 close to the open-loop steel tooth claw 8 will be squeezed on the claw on the open-loop steel tooth claw 8, so that the claw on the open-loop steel tooth claw 8 is opened outward; the pipe is inserted into the pipeline connector along the direction of the quick connection port 2, and then the unlocking ring 7 is driven to rotate by the tool, the groove and the protrusion, and the third plane in the middle of the dynamic chamfered surface 11 on the unlocking ring 7 is rotated to the second plane, and the unlocking ring 7 is rotated to the second plane. Figure 7 It can be seen that, due to the relative positions of the dynamic chamfered surface and the fixed chamfered surface, the length of the whole formed by the two in the pipeline connector in the axial direction of the pipeline connector is minimized, and the unlocking ring 7 moves away from the claws, so that the end of the unlocking ring 7 close to the open-loop steel tooth claw 8 no longer squeezes the claws on the open-loop steel tooth claw 8, and the claws on the open-loop steel tooth claw 8 clamp the pipe, so that the pipe is installed and fixed on the pipeline connector;

[0054] When the bevel climbing structure is not installed in the pipe connector, if the third plane in the middle of the moving bevel surface 11 is against the second plane, the end of the unlocking ring 7 close to the open-loop steel tooth claw 8 will not squeeze the claws on the open-loop steel tooth claw 8, and the claws on the open-loop steel tooth claw 8 are in the original state; the pipe is inserted into the pipe connector along the direction of the quick connection port 2, and the outer wall of the pipe is squeezed by the claws on the open-loop steel tooth claw 8, and the open-loop steel tooth claw 8 shrinks inward when it returns to its original state, so that the claws on the open-loop steel tooth claw 8 are retracted inward to clamp the pipe, thereby fixing the pipe on the pipe connector;

[0055] When the bevel climbing structure is not installed in the pipe connector, if the third plane in the middle of the dynamic bevel surface 11 and the first plane in the middle of the fixed bevel surface 10 are against each other, the end of the unlocking ring 7 close to the open-loop steel tooth claw 8 will be squeezed on the claw on the open-loop steel tooth claw 8, so that the claw on the open-loop steel tooth claw 8 is opened outward; after the pipe is inserted into the pipe connector along the direction of the quick connection port 2, if the unlocking ring 7 is forgotten to be rotated to lock the pipe, the end of the unlocking ring 7 close to the open-loop steel tooth claw 8 is still against the open-loop steel tooth claw 8, so that the claw on the open-loop steel tooth claw 8 cannot be normally retracted inward, so that the claw on the open-loop steel tooth claw 8 cannot clamp the pipe, and the pipe will fall out of the pipe connector under the action of water pressure;

[0056] The outer ring cover 6 and the unlocking ring 7 are provided with a bevel climbing structure, which locks or unlocks the pipe by the bevel cooperation between the dynamic bevel surface 11 and the fixed bevel surface 10, making the pipe locking or unlocking operation more convenient. The bevel climbing structure can reduce the operating distance required for the pipe connector during pipe installation and disassembly operations.

[0057] The open claw support ring 9 and the open-loop steel tooth claw 8 are matched through the positioning fastener 22 and the positioning groove 23. At the same time, the cooperation between the flange 21 on the open-loop steel tooth claw 8 and the open claw support ring 9 can play a positioning role for the open-loop steel tooth claw 8. Through the abutment between one end of the open claw support ring 9 and the first conical neck 19 and the abutment between the elastic support arm 26 and the end face of the inner ring cover 5, the position of the open-loop steel tooth claw 8 is more stable when the pipe connector is used for pipe connection, and it is not easy to shift the position, thereby avoiding the situation where the pipe cannot be normally inserted into the pipe connector due to the position shift of the open-loop steel tooth claw 8.

[0058] One end of the open claw support ring 9 is in a cone shape, and the inner side of the outer ring cover 6 is provided with a first conical necking 19 which abuts against it. The open claw support ring 9, together with the open-loop steel tooth claw 8 and the outer ring cover 6, forms a tube locking structure similar to the principle of expansion screws. The inserted pipe is clamped by the open-loop steel tooth claw 8. When the pipe is under pressure, the pipe will be subjected to two pressures of radial expansion and axial outward push. When the pipe is extruded outward, it is locked by the steel teeth. At this time, the open claw support ring 9, the open-loop steel tooth claw 8 and the pipe will move as a whole toward the port direction of the pipe connector, and the conical part of the open claw support ring 9 continues to approach the first conical necking 19 with a smaller radius on the outer ring cover, so that the pipe is locked tighter and tighter, thereby improving the reliability of the tube locking and facilitating the application of pipes with different diameter tolerances.

[0059] Embodiment 2:

[0060] like Figures 9 to 19As shown in combination, a stable and convenient quick pipe connector includes a connector housing 1, a sealing assembly 4 and a locking tube assembly, wherein the connector housing 1 is provided with one or more quick connection ports 2, and the inner wall of each of the quick connection ports 2 is provided with a matching groove 3 connected to the end face of the connector housing 1, and the quick connection port 2 is sleeved with a sealing assembly 4 and a locking tube assembly;

[0061] The matching groove 3 is composed of a socket groove 27 with a smaller inner diameter and a sealing groove 28 with a larger inner diameter. The socket groove 27 is arranged in the middle of the connector housing 1 for inserting and plugging the pipe. The sealing groove 28 is arranged on one side of the port in the connector housing 1. A sealing assembly 4 is placed in the sealing groove 28.

[0062] An inner ring cover 5 for fixing the sealing assembly 4 is provided at the end surface of the connector housing 1, and the lock tube assembly comprises an outer ring cover 6, an unlocking ring 7, an open-loop steel tooth claw 8 and an open claw support ring 9. The outer ring cover 6 is arranged on the end surface of the inner ring cover 5, and the unlocking ring 7 is fitted in the side of the outer ring cover 6 away from the connector housing 1, and the open-loop steel tooth claw 8 is located in the side of the outer ring cover 6 close to the connector housing 1, and an open claw support ring 9 is provided at the end surface of the open-loop steel tooth claw 8 away from the inner ring cover 5;

[0063] The outer ring cover 6 and the unlocking ring 7 are provided with a bevel climbing structure, and the bevel climbing structure includes a fixed bevel surface 10 and a dynamic bevel surface 11. A step portion 12 is provided on the inner wall of one end of the outer ring cover 6, and the step portion 12 is circumferentially provided with a plurality of fixed bevel surfaces 10 on the wall surface away from the inner side of the connector housing 1. The outer wall of the unlocking ring 7 is provided with an annular flange 13, and the annular flange 13 is circumferentially provided with a plurality of dynamic bevel surfaces 11 on the wall surface close to the outer port of the unlocking ring 7, and the dynamic bevel surface 11 is beveled and matched with the fixed bevel surface 10.

[0064] The middle part of the fixed chamfered surface 10 is a third slope surface, and the fixed chamfered surfaces 10 outside the two sides of the third slope surface are respectively provided with a fifth plane and a sixth plane, and the fifth plane and the sixth plane are skew and parallel on the same fixed chamfered surface 10, and the fifth plane and the sixth plane on the transition of two adjacent fixed chamfered surfaces 10 are skew and parallel to each other, and the transition of two adjacent fixed chamfered surfaces 10 is a stepped structure, and the distance from the fifth plane to the end face of the open-loop steel tooth claw 8 is shorter than the distance from the sixth plane to the end face of the open-loop steel tooth claw 8. The middle part of the dynamic beveled surface 11 is a fourth sloped surface, and the dynamic beveled surfaces 11 outside the fourth sloped surface are respectively provided with a seventh plane and an eighth plane, and the seventh plane and the eighth plane are skewed and parallel on the same dynamic beveled surface 11, and the seventh plane and the eighth plane at the transition point of two adjacent dynamic beveled surfaces 11 are skewed and parallel to each other, and the transition point of two adjacent dynamic beveled surfaces 11 is a stepped structure, and the distance from the seventh plane to the end face of the open-loop steel tooth claw 8 is greater than the distance from the eighth plane to the end face of the open-loop steel tooth claw 8.

[0065] A plurality of unlocking portions 18 for cooperating with a tool are circumferentially arranged on the outer end surface of the unlocking ring 7 , and the unlocking portions 18 are grooves or protrusions.

[0066] The inner wall of the outer ring cover 6 away from the stepped portion 12 is provided with a first conical necking 19 , the radius of which gradually decreases in the direction approaching the inner ring cover 5 , and one end of the open claw support ring 9 is conical in shape and abuts against the first conical necking 19 .

[0067] The non-conical end edge of the open claw support ring 9 is transitioned through a rounded corner, and an inwardly curved flange 21 is provided at the edge of the open-loop steel tooth claw 8 near the side of the open claw support ring 9. The open-loop steel tooth claw 8 is fitted on the other end of the open claw support ring 9 through the flange 21, and a plurality of positioning fasteners 22 are circumferentially provided on the flange 21. A plurality of positioning grooves 23 are circumferentially provided on the outer wall of the conical end of the open claw support ring 9. The positioning fastener 22 is fitted in the positioning groove 23, and the width of the portion of the positioning groove 23 away from the rounded corner is greater than the width of the portion of the positioning groove 23 near the rounded corner, and the width of the positioning fastener 22 near the unlocking ring 7 side is greater than the width of the positioning fastener 22 away from the unlocking ring 7 side.

[0068] The open-loop steel tooth claw 8 is provided with a plurality of elastic supporting arms 26 , and one end surface of the elastic supporting arm 26 abuts against the end surface of the inner ring cover 5 .

[0069] When the bevel climbing structure is not installed in the pipe connector, if the seventh plane on the moving bevel surface 11 and the fifth plane on the fixed bevel surface 10 are against each other, and the transition between the two moving bevel surfaces 11 and the transition between the two fixed bevel surfaces 10 are not in contact with each other, Fig.16 It can be seen that, due to the relative positions of the dynamic beveled surface 11 and the fixed beveled surface 10, the length of the whole formed by the two in the pipeline connector in the axial direction of the pipeline connector reaches the maximum, and the end of the unlocking ring 7 close to the open-loop steel tooth claw 8 will be squeezed on the claw on the open-loop steel tooth claw 8, so that the claw on the open-loop steel tooth claw 8 is opened outward; the pipe is inserted into the pipeline connector along the direction of the quick connection port 2, and then the unlocking ring 7 is driven to rotate by the tool, the groove and the protrusion, and the seventh plane on the dynamic beveled surface 11 is rotated to abut against the sixth plane on the fixed beveled surface 10; at the same time, the eighth plane on the dynamic beveled surface 11 is rotated to abut against the fifth plane on the fixed beveled surface 10. Fig.17 It can be seen that, due to the relative positions of the dynamic chamfered surface and the fixed chamfered surface, the length of the whole formed by the two in the pipeline connector in the axial direction of the pipeline connector is minimized, and the unlocking ring 7 moves in the direction away from the claws, so that the end of the unlocking ring 7 close to the open-loop steel tooth claw 8 no longer squeezes the claws on the open-loop steel tooth claw 8. Under the contraction effect of the claws on the open-loop steel tooth claw 8, the claws on the open-loop steel tooth claw 8 clamp the pipe, so that the pipe is installed and fixed on the pipeline connector;

[0070] When the bevel climbing structure is not installed in the pipe connector, if the seventh plane on the dynamic bevel surface 11 rotates to abut against the sixth plane on the fixed bevel surface 10, and at the same time, the eighth plane on the dynamic bevel surface 11 rotates to abut against the fifth plane on the fixed bevel surface 10, the stepped structure at the transition between the two dynamic bevel surfaces 11 abuts against the stepped structure at the transition between the two fixed bevel surfaces 10, then the end of the unlocking ring 7 close to the open-loop steel tooth claw 8 does not squeeze the claw on the open-loop steel tooth claw 8, and the claw on the open-loop steel tooth claw 8 is in the original state, and the pipe is inserted into the pipe connector along the direction of the quick connection port 2, and the outer wall of the pipe is squeezed by the claw on the open-loop steel tooth claw 8, and the open-loop steel tooth claw 8 shrinks inward when it returns to its original state, so that the claw on the open-loop steel tooth claw 8 is retracted inward to clamp the pipe, thereby fixing the pipe on the pipe connector;

[0071] When the bevel climbing structure is not installed in the pipe connector, if the seventh plane on the dynamic bevel surface 11 and the fifth plane on the fixed bevel surface 10 are against each other, and the eighth plane on the dynamic bevel surface 11 and the sixth plane on the fixed bevel surface 10 are not in contact with each other, the end of the unlocking ring 7 close to the open-loop steel tooth claw 8 will be squeezed on the claw on the open-loop steel tooth claw 8, so that the claw on the open-loop steel tooth claw 8 is opened outward; after the pipe is inserted into the pipe connector along the direction of the quick connection port 2, if the unlocking ring 7 is forgotten to be rotated to lock the pipe, the end of the unlocking ring 7 close to the open-loop steel tooth claw 8 is still against the open-loop steel tooth claw 8, so that the claw on the open-loop steel tooth claw 8 cannot be normally retracted inward, so that the claw on the open-loop steel tooth claw 8 cannot clamp the pipe, and under the action of water pressure, the pipe will fall out of the pipe connector;

[0072] The outer ring cover 6 and the unlocking ring 7 are provided with a bevel climbing structure, which locks or unlocks the pipe by the bevel cooperation between the dynamic bevel surface 11 and the fixed bevel surface 10, making the pipe locking or unlocking operation more convenient. The bevel climbing structure can reduce the operating distance required for the pipe connector during pipe installation and disassembly operations.

[0073] The open claw support ring 9 and the open-loop steel tooth claw 8 are matched through the positioning fastener 22 and the positioning groove 23. At the same time, the cooperation between the flange 21 on the open-loop steel tooth claw 8 and the open claw support ring 9 can play a positioning role for the open-loop steel tooth claw 8. Through the abutment between one end of the open claw support ring 9 and the first conical neck 19 and the abutment between the elastic support arm 26 and the end face of the inner ring cover 5, the position of the open-loop steel tooth claw 8 is more stable when the pipe connector is used for pipe connection, and it is not easy to shift the position, thereby avoiding the situation where the pipe cannot be normally inserted into the pipe connector due to the position shift of the open-loop steel tooth claw 8.

[0074] One end of the open claw support ring 9 is in a cone shape, and the inner side of the outer ring cover 6 is provided with a first conical necking 19 which abuts against it. The open claw support ring 9, together with the open-loop steel tooth claw 8 and the outer ring cover 6, forms a tube locking structure similar to the principle of expansion screws. The inserted pipe is clamped by the open-loop steel tooth claw 8. When the pipe is under pressure, the pipe will be subjected to two pressures of radial expansion and axial outward push. When the pipe is extruded outward, it is locked by the steel teeth. At this time, the open claw support ring 9, the open-loop steel tooth claw 8 and the pipe will move as a whole toward the port direction of the pipe connector, and the conical part of the open claw support ring 9 continues to approach the first conical necking 19 with a smaller radius on the outer ring cover, so that the pipe is locked tighter and tighter, thereby improving the reliability of the tube locking and facilitating the application of pipes with different diameter tolerances.

[0075] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A stable and convenient quick pipe connector, comprising a connector housing, a sealing assembly and a locking tube assembly, wherein the connector housing is provided with one or more quick connection ports, each of the quick connection ports is provided with a matching groove on the inner wall thereof connected to the end face of the connector housing, and the quick connection port is provided with a sealing assembly and a locking tube assembly, characterized in that: The matching groove is composed of a socket with a smaller inner diameter and a sealing groove with a larger inner diameter. The socket is arranged in the middle of the connector housing for inserting and inserting the pipe. The sealing groove is arranged on one side of the port in the connector housing. A sealing assembly is placed in the sealing groove. An inner ring cover for fixing the sealing assembly is arranged at the end surface of the connector housing. The lock tube assembly comprises an outer ring cover, an unlocking ring, an open-loop steel tooth claw and an open-loop claw support ring, wherein the outer ring cover is arranged on the end surface of the inner ring cover, the unlocking ring is fitted in a side of the outer ring cover away from the connector housing, the open-loop steel tooth claw is located in a side of the outer ring cover close to the connector housing, and an open-loop claw support ring is arranged at the end surface of the open-loop steel tooth claw away from the inner ring cover; The outer ring cover and the unlocking ring are provided with a bevel climbing structure, and the bevel climbing structure includes a fixed bevel surface and a dynamic bevel surface. A step portion is provided on the inner wall of one end of the outer ring cover, and a wall surface of the step portion away from the outer end surface of the outer ring cover is circumferentially provided with a plurality of fixed bevel surfaces. The outer wall of the unlocking ring is provided with an annular convex edge, and a wall surface of the annular convex edge close to the outer port of the unlocking ring is circumferentially provided with a plurality of dynamic bevel surfaces. The dynamic bevel surface and the fixed bevel surface are formed into a bevel fit through the relative movement of the bevel surface of the dynamic bevel surface and the bevel surface of the fixed bevel surface during the rotation of the unlocking ring, and the plane of the dynamic bevel surface away from the open-loop steel tooth claw is against two different planes in the fixed bevel surface, so that the dynamic bevel surface and the fixed bevel surface form a bevel fit, thereby realizing the axial movement of the unlocking ring in the pipeline connector and the squeezing or non-squeezing of the claw by the end of the unlocking ring close to the open-loop steel tooth claw.

2. A stable and convenient quick pipe connector according to claim 1, characterized in that: The plane of the fixed bevel cut surface includes a first plane and a second plane, the bevel of the fixed bevel cut surface is a first slope surface, the middle part of the fixed bevel cut surface is the first plane, the step wall between two adjacent fixed bevel cut surfaces is provided with a second plane, the fixed bevel cut surfaces on both sides of the first plane transition to the second plane through the first slope surface, the distance length from the first plane to the end face of the open-loop steel tooth claw is less than the distance length from the second plane to the end face of the open-loop steel tooth claw, the plane of the dynamic bevel cut surface includes a third plane and a fourth plane, the bevel of the dynamic bevel cut surface is a second slope surface, the middle part of the dynamic bevel cut surface is the third plane, the annular convex edge wall between two adjacent dynamic bevel cut surfaces is provided with a fourth plane, the dynamic bevel cut surfaces on both sides of the third plane transition to the fourth plane through the second slope surface, the distance length from the third plane to the end face of the open-loop steel tooth claw is greater than the distance length from the fourth plane to the end face of the open-loop steel tooth claw.

3. A stable and convenient quick pipe connector according to claim 1, characterized in that: The plane of the fixed bevel cut surface includes a fifth plane and a sixth plane, the inclined surface of the fixed bevel cut surface is the third slope surface, the middle part of the fixed bevel cut surface is the third slope surface, the fixed bevel cut surfaces outside the two sides of the third slope surface are respectively provided with a fifth plane and a sixth plane, the fifth plane and the sixth plane are skew and parallel in the same fixed bevel cut surface, the fifth plane and the sixth plane at the transition of two adjacent fixed bevel cut surfaces are skew and parallel to each other, the transition of two adjacent fixed bevel cut surfaces is a stepped structure, the distance length from the fifth plane to the end face of the open-loop steel tooth claw is less than the distance length from the sixth plane to the end face of the open-loop steel tooth claw, The planes of the dynamic beveled surface include a seventh plane and an eighth plane, the bevel of the dynamic beveled surface is a fourth slope surface, the middle part of the dynamic beveled surface is the fourth slope surface, and the dynamic beveled surfaces outside the two sides of the fourth slope surface are respectively provided with a seventh plane and an eighth plane, the seventh plane and the eighth plane are skewed and parallel in the same dynamic beveled surface, the seventh plane and the eighth plane at the transition point of two adjacent dynamic beveled surfaces are skewed and parallel to each other, the transition point of two adjacent dynamic beveled surfaces is a stepped structure, and the distance from the seventh plane to the end face of the open-loop steel tooth claw is greater than the distance from the eighth plane to the end face of the open-loop steel tooth claw.

4. A stable and convenient quick pipe connector according to claim 1, characterized in that: A plurality of unlocking parts for cooperating with a tool are circumferentially arranged at the outer end surface of the unlocking ring, and the plurality of unlocking parts are composed of one or both of grooves and protrusions.

5. A stable and convenient quick pipe connector according to claim 1, characterized in that: The inner wall of the outer ring cover away from the stepped portion is provided with a first conical necking, the radius of which gradually decreases in the direction approaching the inner ring cover, and one end of the open claw support ring is conical and abuts against the first conical necking.

6. A stable and convenient quick pipe connector according to claim 5, characterized in that: The non-conical end edge of the open claw support ring is transitioned through a rounded corner, and an inwardly curved flange is provided at the edge of the open-loop steel tooth claw close to the open claw support ring side. The open-loop steel tooth claw is fitted on the other end of the open claw support ring through the flange, and a plurality of positioning fasteners are circumferentially provided on the flange. A plurality of positioning grooves are circumferentially provided on the outer wall of the conical end of the open claw support ring, and the positioning fasteners are fitted in the positioning grooves. The width of the portion of the positioning groove away from the rounded corner is greater than the width of the portion of the positioning groove close to the rounded corner, and the width of the positioning fastener close to the unlocking ring side is greater than the width of the positioning fastener away from the unlocking ring side.

7. A stable and convenient quick pipe connector according to claim 1, characterized in that: The open-loop steel tooth clamping claw is provided with a plurality of elastic supporting arms, and one end surface of the elastic supporting arm abuts against the end surface of the inner ring cover.

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