Quick connector

Abstract

The present invention discloses a quick connector, which includes a socket member and a sliding lock. The socket member includes a stop member, which is configured to stop the automatic movement of the sliding lock in the transverse direction towards the inside of the socket member during the insertion of the fluid pipeline, and release the stop on the sliding lock when the fluid pipeline is fully pushed into the main body of the socket member; the sliding lock further includes at least one locking hook, and the locking hook cooperates with a locking fastener provided in the main body of the socket member. When the fluid pipeline is fully pushed into the main body of the socket member, the locking hook moves around the locking fastener and finally surrounds the locking fastener. The quick connector of the present invention is smaller in size and has a visual error-proof function. During the insertion of the fluid pipeline, the sliding lock will not move to the locked position even under the action of an external force.

Description

Technical Field

[0001] The present invention generally relates to a connector for a fluid pipeline. More specifically, the present invention relates to a quick connector for connecting one fluid pipeline / device to another fluid pipeline / device. Background Art

[0002] In many industries, it is necessary to connect a first fluid pipeline to a second fluid pipeline. This is often the case in the automotive industry, where fluids such as gasoline, oil, coolant, and brake fluid need to be transported between a first location and a second location on a vehicle. These two locations are usually relatively far apart. Importantly, the pipelines for transporting these fluids are easy to install and are secure and leak-proof.

[0003] The point with the highest risk of fluid pipeline leakage is the connection point. Aware of this problem, designers of fluid pipeline connectors strive to construct secure connectors that transport fluids without leakage when properly installed. Early solutions that meet the requirements of being securely connected and leak-proof include threaded fasteners for connecting one pipeline to another.

[0004] Although ensuring an appropriate leak-proof seal when properly installed, threaded fasteners require the installer to use two wrenches, which takes a relatively long assembly time. To reduce the time required to connect a first fluid pipeline to a second fluid pipeline, quick connectors have been developed. Modern quick connectors are installed between two fluid pipelines. By simply inserting the pipeline into the quick connector, the attachment of at least one fluid pipeline can be easily performed. The locking device in the quick connector holds the fluid pipeline by engaging with a radially enlarged flange or a radially recessed annular groove formed on the fluid pipeline. In some cases, the fluid pipeline can be released from the quick connector through a release button in the quick connector. Known quick connectors generally easily connect one fluid pipeline to another without leakage.

[0005] Although providing adequate solutions for many purposes, known quick connector designs have certain limitations. For example, applications with a compact installation space pose higher requirements for the size design of quick connectors, and existing quick connectors may not be able to meet such requirements.

[0006] For example, Chinese Patent Document CN107061897A discloses a safety pipe joint with automatic connection, including a female connector and a connecting element. The female connector has a body, and a male connector with an annular ferrule is axially inserted into the body. The connecting element extends in a transverse direction within the body of the female connector. The connecting element is designed to mechanically interfere with the ferrule during the insertion of the male connector and automatically move laterally towards the interior of the female connector. The connecting element includes a locking hook that cooperates with a locking fastener provided in the female connector. The hook passes over the fastener due to the mechanical interference causing axial and radial elastic deformation of the connecting element driven by the ferrule. When the connecting element is fully pushed into the female connector, the hook locks onto the fastener. Although this document proposes a solution for visual error prevention and automatic locking, the technical solution is directed to a male connector with an annular ferrule and cannot be applied to a male connector with a groove, and thus cannot adapt to the current space-compact installation environment.

[0007] Therefore, an improved quick connector for easily fastening a first fluid line to another fluid line is still needed. SUMMARY OF THE INVENTION

[0008] The object of the present invention is to improve the quick connection device in the prior art and provide a quick connector.

[0009] The present invention provides a quick connector, which includes a socketing component and a sliding lock. The socketing component includes a body defining a receiving hole for receiving a fluid line with an annular groove inserted in the axial direction. The sliding lock extends in a transverse direction in a recess in the body of the socketing component. The sliding lock is configured to radially elastically deform towards the outside of the socketing component through mechanical interference with the end of the fluid line during the insertion of the fluid line into the socketing component, and has a tendency to automatically move towards the interior of the socketing component in the transverse direction in response to this radial elastic deformation. The socketing component further includes a stop component configured to stop the automatic movement of the sliding lock towards the interior of the socketing component in the transverse direction during the insertion of the fluid line into the socketing component and release the stop on the sliding lock when the fluid line is fully pushed into the body of the socketing component. The sliding lock further includes at least one locking hook that cooperates with a locking fastener provided in the body of the socketing component. When the fluid line is fully pushed into the body of the socketing component, the locking hook moves around the locking fastener and finally surrounds the locking fastener.

[0010] In some preferred forms, the stop member is configured to radially elastically deform towards the outside of the socket member by mechanical interference with the end of the fluid pipeline during the insertion of the fluid pipeline into the socket member, thereby stopping the sliding lock, and when the fluid pipeline is fully pushed into the main body of the socket member, the stop on the sliding lock is released by removing the mechanical interference with the end of the fluid pipeline, and then under the action of the elastic restoring force.

[0011] In some preferred forms, the sliding lock includes a first fork and a second fork. The first fork includes two retaining arms that can be embedded in the annular groove of the fluid pipeline. The second fork includes two locking arms, and each locking arm includes the locking hook. The locking hook includes an opening radially facing the inside of the socket member.

[0012] In some preferred forms, the retaining arm is configured to include a stop surface that prevents the fluid pipeline from being inserted into the receiving hole after the sliding lock accidentally moves into the locked position.

[0013] In some preferred forms, the stop member includes two wings extending circumferentially along the receiving hole of the socket member. Each wing includes a wing protrusion protruding radially towards the inside of the socket member.

[0014] In some preferred forms, the wings are configured such that when mechanical interference occurs between the wing protrusion and the end of the fluid pipeline, the end of the wing is opposite to the end of the retaining arm of the sliding lock, and when the wing protrusion is embedded in the annular groove of the fluid pipeline, the end of the wing is offset from the end of the retaining arm of the sliding lock.

[0015] In some preferred forms, the main body of the socket member includes an outer main body part and an inner main body part sleeved with each other, and the stop member is provided on the inner main body part.

[0016] In some preferred forms, the wings extend circumferentially along the receiving hole of the socket member from the bottom of the inner main body part.

[0017] In some preferred forms, the wings are configured such that when mechanical interference occurs between the wing protrusion and the end of the fluid pipeline, the end of the wing engages with the end of the retaining arm, and when the wing protrusion is embedded in the annular groove of the fluid pipeline, the end of the wing disengages from the end of the retaining arm. In some preferred forms, the part of the wing opposite to the end of the retaining arm is provided with teeth protruding towards the end of the retaining arm; the end of the retaining arm is provided with teeth matching the teeth of the wing, and the engagement of the wing is achieved through the teeth to prevent the lateral movement of the sliding lock.

[0018] In some preferred forms, the number of teeth at the end of the holding arm is greater than the number of teeth of the wing portion.

[0019] In some preferred forms, the wing protrusion is configured not to obstruct the insertion or extraction of the fluid pipeline from the receiving hole.

[0020] In some preferred forms, the sliding lock includes an interference portion provided on its front surface, the interference portion being inclined with respect to the axial direction, and the interference portion is provided to be located below the middle of the receiving hole of the socket member.

[0021] In some preferred forms, the sliding lock and the body of the socket member are configured such that during mechanical interference, before the sliding lock elastically deforms radially, the locking hook axially protrudes into the body of the socket member, such that in response to the radial and axial elastic deformations of the sliding lock, the locking hook moves around the locking fastener and finally encloses the locking fastener.

[0022] In some preferred forms, the bottom of the locking hook initially abuts against the locking fastener, and the locking hook is in the concave portion of the body of the socket member, and the locking hook is arranged in a clearance area.

[0023] The quick connector of the present invention has the following beneficial effects: The quick connector is smaller in size and has a visual anti-misconnection function. During the insertion of the fluid pipeline, the sliding lock will not move to the locked position even under the action of an external force. When the fluid pipeline is inserted to the fixed position, the sliding lock will automatically move to the locked position without manually pressing the sliding lock to the locked position, making the operation more convenient.

[0024] From the following detailed description of the preferred embodiments in conjunction with the drawings, the above and other advantages and features will become apparent and understandable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more fully understand the present invention, reference should now be made to the embodiments shown in more detail in the drawings and described below by way of example of the present invention, wherein:

[0026] Figure 1 is an exploded schematic view of a quick connector according to a first embodiment of the present invention from one perspective;

[0027] Figure 2 is an exploded schematic view of a quick connector according to a first embodiment of the present invention from another perspective;

[0028] Figure 3AFIG. 0 is a front structural schematic diagram of the quick connector according to the first embodiment of the present invention when the fluid pipeline is not inserted into the socket member, showing that the sliding lock is in the unlocked position within the socket member;

[0029] Figure 3B FIG. 4 is a side structural schematic diagram of the quick connector according to the first embodiment of the present invention when the fluid pipeline is not inserted into the socket member, showing that the sliding lock is in the unlocked position within the socket member;

[0030] Figure 4A FIG. 8 is a side structural schematic diagram of the quick connector according to the first embodiment of the present invention when the fluid pipeline is partially inserted into the socket member;

[0031] Figure 4B FIG. 12 is a Figure 4A cross-sectional structural schematic diagram along line A-A in FIG.

[0032] Figure 4C FIG. 18 is a front structural schematic diagram of the quick connector according to the first embodiment of the present invention when the fluid pipeline is partially inserted into the socket member;

[0033] Figure 4D FIG. 22 is a Figure 4C cross-sectional structural schematic diagram along line A1-A1 in FIG.

[0034] Figure 5A FIG. 28 is a side structural schematic diagram of the quick connector according to the first embodiment of the present invention at the stage where the fluid pipeline has just been fully inserted into the socket member and the sliding lock is moving towards the locked position;

[0035] Figure 5B FIG. 32 is a Figure 5A cross-sectional structural schematic diagram along line B-B in FIG.

[0036] Figure 5C FIG. 38 is a front structural schematic diagram of the quick connector according to the first embodiment of the present invention at the stage where the fluid pipeline has just been fully inserted into the socket member and the sliding lock is moving towards the locked position;

[0037] Figure 5D FIG. 42 is a Figure 5C cross-sectional structural schematic diagram along line B1-B1 in FIG.

[0038] Figure 6A FIG. 48 is a side structural schematic diagram of the quick connector according to the first embodiment of the present invention at the stage where the fluid pipeline has been fully inserted into the socket member and the sliding lock has moved to the locked position;

[0039] Figure 6B FIG. 52 is a Figure 6A cross-sectional structural schematic diagram along line C-C in FIG.

[0040] Figure 6CSchematic front view of a quick connector according to a first embodiment of the present invention at a stage where a fluid pipeline has been fully inserted into a socket member and a sliding lock has been moved to a locked position;

[0041] Figure 6D is along Figure 6C Schematic cross-sectional view along line C1-C1 in

[0042] Figure 7 Partial cross-sectional schematic view of a quick connector according to a first embodiment of the present invention in a situation where a fluid pipeline has not been inserted into a socket member and a sliding lock has accidentally moved to a locked position;

[0043] Figure 8 Exploded schematic view of a quick connector according to a second embodiment of the present invention from one perspective;

[0044] Figure 9 Exploded schematic view of a quick connector according to a second embodiment of the present invention from another perspective;

[0045] Figure 10A Front view of a quick connector according to a second embodiment of the present invention in an assembled state;

[0046] Figure 10B Side view of a quick connector according to a second embodiment of the present invention in an assembled state;

[0047] Figure 11A Side view of a quick connector according to a second embodiment of the present invention when a fluid pipeline is partially inserted into a socket member;

[0048] Figure 11B is along Figure 11A Cross-sectional view along line D-D in

[0049] Figure 11C is along Figure 11A Cross-sectional view along line D1-D1 in

[0050] Figure 12A Side view of a quick connector according to a second embodiment of the present invention at a stage where a fluid pipeline has just been fully inserted into a socket member and a sliding lock is moving towards a locked position;

[0051] Figure 12B is along Figure 12A Cross-sectional view along line E-E in

[0052] Figure 12C is along Figure 12A Cross-sectional view along line E1-E1 in

[0053] Figure 12D is along Figure 12C Cross-sectional view along line E2-E2 in

[0054] Figure 13A is a side view of the quick connector according to the second embodiment of the present invention at the stage where the fluid pipeline is fully inserted into the socket member and the sliding lock has moved to the locked position;

[0055] Figure 13B is along Figure 13A the sectional view taken along the line F-F in

[0056] Figure 13C is along Figure 13A the sectional view taken along the line F1-F1 in

[0057] Figure 13D is along Figure 13C the sectional view taken along the line F2-F2 in; and

[0058] Figure 14 is a partial perspective view of the quick connector according to a variant of the second embodiment of the present invention. Description of the Drawings:

[0060] First Embodiment

[0061] Quick connector 1 Locking fastener 37

[0062] Joint head section 2 First fork 38

[0063] Fluid pipeline 4 Gap 39

[0064] Socket member 6 Holding arm 40

[0065] Sliding lock 8 Holding flange 41

[0066] Receiving portion 10 Second fork 42

[0067] Open channel 12 Stop surface 43

[0068] Snap projection 14 Locking arm 44

[0069] Positioning rib 16 U-shaped bottom 46

[0070] Wall surface 18 End 48

[0071] Snap 20 C-shaped locking hook 50

[0072] Snap opening 22 Opening 52

[0073] Channel 24 Front 54

[0074] First plane a End face 56

[0075] Second plane b End 58

[0076] Axial A interference part 60

[0077] Receiving hole 26 Bevel surface 62

[0078] Annular groove 28 Protrusion 64

[0079] Main body 30 Protrusion 66

[0080] Concave part 32 Wing part 68

[0081] Radial opening 34 Wing part protrusion 70

[0082] Transverse T bevel surface 72

[0083] Gap region 36 End part 74

[0084] Second Embodiment and Its Variations

[0085] Quick connector 101 Second fork 142

[0086] Connector head segment 102 Locking arm 144

[0087] Fluid pipeline 104 U-shaped bottom 146

[0088] Socket part 106 End parts of the holding arm 148; 148’

[0089] Sliding lock 108 End face of the fluid pipeline 156

[0090] Receiving hole 126 Opening 157

[0091] Annular groove 128 End part of the fluid pipeline 158

[0092] Main body 130 Inner radial opening 159

[0093] Inner main body part 131 Outer radial opening 161

[0094] Outer main body part 133 Wing parts 168; 168’

[0095] First fork 138 Teeth of the wing part 169; 169’

[0096] Holding arms 140; 140’ Wing part protrusion 170

[0097] Teeth of the holding arm 141; 141’ End parts of the wing part 174; 174’ Detailed implementation method

[0098] As will be understood by those of ordinary skill in the art, the various features of the embodiments shown and described with reference to any one of the figures may be combined with features shown in one or more other figures to produce other embodiments not explicitly shown or described. Combinations of the features shown provide representative embodiments for typical applications. However, for a particular application or implementation, various combinations and modifications of the features may be desirable that are consistent with the teachings of this disclosure.

[0099] The figures illustrate a quick connector according to the present invention. The quick connector shown and discussed with respect to the accompanying figures is applicable to a variety of applications including and extending beyond the automotive field. In particular, the quick connector can be used in any environment where a first fluid line is to be connected to a second fluid line. Such environments include, but are not limited to, aircraft, locomotives, and ships. Other environments include factories, commercial, and residential areas.

[0100] The quick connector of the present invention is shown as having a T-shaped body. It should be understood that the body of the quick connector of the present invention may be L-shaped in terms of shape, or may actually be any other shape required to adapt to a specific purpose. In addition, the shown quick connector shows such a body having a first end in the form of a quick-connect device and second and third ends in the form of conduits for connection to a hose or any other type of tube. Alternatively, the quick connector of the present invention may include quick-connect devices at both ends. Thus, the shown quick connector is intended to be illustrative but not limiting.

[0101] Figure 1 and Figure 2 FIG. shows an exploded schematic view of an exemplary quick connector 1 for establishing fluid communication between a first fluid line and a second fluid line according to a first embodiment of the present disclosure. The quick connector 1 mainly includes a joint section 2, a socket member 6 for holding the fluid line 4, and a sliding lock 8.

[0102] As Figure 1 and Figure 2 shown, in the illustrated embodiment, the joint section 2 is shown in the form of a T-shaped tee, the joint section 2 includes a receiving portion 10, an opening channel 12 is provided in the receiving portion 10, and a plurality of snap projections 14 and a plurality of positioning ribs 16 are uniformly arranged on the annular outer wall of the receiving portion 10, and the snap projections 14 and the positioning ribs 16 are alternately arranged. From Figure 1 and Figure 2It can be seen that the plurality of snap fasteners 20 axially extending from the wall surface 18 of the socket member 6 adjacent to the joint head segment 2 towards the joint head segment 2 have snap openings 22 capable of accommodating the snap protrusions 14 and are arranged at annular intervals, forming channels 24 capable of receiving the positioning ribs 16 between the respective snap fasteners 20. In this embodiment, a total of four snap fasteners 20 are provided on the socket member 6. Correspondingly, the snap protrusions 14 and the positioning ribs 16 of the joint head segment 2 are radially symmetrically arranged on the annular outer wall of the receiving portion 10, and the positioning ribs 16 are located between every two snap protrusions 14. In this embodiment, the snap protrusions 14 are arranged adjacent to the entrance end of the receiving portion 10 and can be snapped with the snap openings 22 of the snap fasteners 20 of the socket member 6, so that the socket member 6 can be conveniently and unobstructedly sleeved onto the joint head segment 2 and a reliable fixed connection is achieved. The positioning ribs 16 are provided with a right-angled radial cross-section, including a first plane a and a second plane b arranged at a right angle, and the first plane a and the second plane b are respectively in contact with the adjacent snap fasteners 20. When the socket member 6 is snapped with the snap protrusions 14 of the joint head segment 2 through the snap fasteners 20, the positioning ribs 16 slide into the channels 24 between the two snap fasteners 20. Due to the right-angled radial cross-section of the positioning ribs 16, the positioning ribs 16 form a line-to-surface or even surface-to-surface contact with the channels 24, thereby reliably maintaining the socket member 6 and the joint head segment 2 in a stable snapped state and preventing the socket member 6 from rotating on the annular outer wall of the joint head segment 2. This snap fit can also achieve an adjustment of, for example, 90° (as shown in the attached drawings) or even any suitable angle between the socket member 6 and the joint head segment 2 through the setting of the number and positions of the snap fasteners 20 and the positioning ribs 16, so as to adapt to different assembly requirements and application scenarios.

[0103] A sealing assembly (not shown) is usually further provided between the socket member 6 and the joint head segment 2. For example, the sealing assembly includes two sealing rings and an intermediate ring disposed therebetween. After the socket member 6 is connected to the joint head segment 2 and the fluid pipeline 4 is inserted into the quick connector 1, the sealing rings and the intermediate ring will seal the opening channel 12 of the joint head segment 2 and seal against the abutting end face of the socket member 6.

[0104] It should be understood that the socket member 6 and the joint head segment 2 can also be connected to each other in other ways and an appropriate angle adjustment between the socket member 6 and the joint head segment 2 can be achieved to adapt to different assembly requirements and application scenarios. In addition, the socket member 6 and the joint head segment 2 can also be integrally formed. This is advantageous for application scenarios where an angle adjustment between the socket member 6 and the joint head segment 2 is not required. In this embodiment, the diameter of the socket member 6 can be set smaller, so as to be applied to an installation environment with a compact space.

[0105] As Figure 1 and Figure 2As shown, in the illustrated embodiment, in the quick connector 1, the fluid line 4 is inserted axially along the axis A into the socket member 6. Specifically, the socket member 6 includes a receiving hole 26, and the fluid line 4 is inserted into the receiving hole 26 of the socket member 6.

[0106] The quick connector 1 of the present invention is mainly used to connect such a fluid line 4, which is in the form of an elongated cylindrical tube and has an annular groove 28 provided on its circular outer periphery. It should be understood that the diameter of the portion of the fluid line 4 other than the annular groove 28 is greater than the diameter of the annular groove 28. The diameter of the fluid line 4 is smaller than the inner diameter of the receiving hole 26 of the socket member 6 so that the fluid line 4 can be inserted into the receiving hole 26.

[0107] As Figure 1 and Figure 2 shown, in the illustrated embodiment, the socket member 6 has a main body 30, the main body 30 has a recess 32, and a radial opening 34 is provided at the top of the recess 32. The radial opening 34 forms a kind of slideway, and the sliding lock 8 can be inserted into the slideway along the transverse direction T and slide therein. In the portion of the recess 32 below the middle of the receiving hole 26, the recess 32 has two clearance regions 36, the clearance regions 36 are symmetrically arranged, and the clearance regions 36 penetrate the annular outer peripheral surface of the socket member 6 in the form of radial grooves. These two radial grooves can be used for the branches of the sliding lock 8 (described below) to be inserted along the transverse direction and can enable the branches of the sliding lock 8 to radially expand inside the main body 30 of the socket member 6.

[0108] As Figure 2 shown, in the illustrated embodiment, at the bottom of the socket member 6, an axially arranged locking fastener 37 and a void 39 adjacent to the locking fastener 37 are provided in the clearance region 36. Another locking fastener together with the void adjacent to it, which is not visible in the figure, is arranged in another clearance region symmetric to the clearance region 36 visible in Figure 2 .

[0109] As Figure 2 shown, in the illustrated embodiment, the locking fastener 37 is rectangular in shape, and it can also be of other shapes. The locking fastener 37 can both stop and lock the sliding lock 8. This will be specifically described below.

[0110] The sliding lock 8 is described below. In this embodiment, the sliding lock 8 can move between an unlocked position and a locked position after being inserted into the main body 30 of the socket member 6. The sliding lock 8 being in the unlocked position can be seen in Figure 3A and Figure 3B , and the sliding lock 8 being in the locked position can be seen in Figure 6A and Figure 6C. Unless otherwise specified, the following description of the relative positions between the respective components of the sliding lock 8 and the socket member 6 is based on the case where the sliding lock 8 is in the unlocked position.

[0111] As Figure 1 and Figure 2 shown, in the illustrated embodiment, the sliding lock 8 is in the form of two forks. The first fork 38 has an inverted U-shape and has two retaining arms 40, while the second fork 42 has an inverted U-shape and has two locking arms 44. The two forks are connected together via a U-shaped bottom 46.

[0112] As Figure 1 and Figure 2 shown, in the illustrated embodiment, the two retaining arms 40 of the first fork 38 are arranged to be able to be inserted into the annular groove 28 of the fluid pipeline 4 to axially hold and lock the fluid pipeline 4 when the fluid pipeline 4 is fully pushed into the interior of the body 30 of the socket member 6. Specifically, the retaining flange 41 of the retaining arm 40 can be inserted into the annular groove 28 of the fluid pipeline 4. Figure 1 Above the retaining flange 41 shown in Figure 6D there is a stop surface 43. Figure 7 shows a partial cross-sectional structural schematic diagram of the quick connector according to an embodiment of the present invention in the case where the fluid pipeline has not been inserted into the socket member and the sliding lock accidentally moves to the locked position. As Figure 7 shown, in the illustrated embodiment, the stop surface 43 of the retaining arm 40 abuts against the end face 56 of the fluid pipeline 4. That is to say, when the sliding lock 8 is in the locked position in the socket member 6, the stop surface 43 can prevent the fluid pipeline from being inserted into the receiving hole 26 of the socket member 6. The two retaining arms 40 of the first fork 38 are separated from each other and extend in the transverse direction. The two retaining arms 40 are formed with a radius of curvature corresponding to the diameter of the annular groove 28 of the fluid pipeline 4 to be suitable for being inserted into the annular groove 28 of the fluid pipeline 4. Each retaining arm 40 further includes an end portion 48 extending in the transverse direction.

[0113] As Figure 1 and Figure 2 shown, in the illustrated embodiment, the two locking arms 44 of the second fork 42 are separated from each other and extend in the transverse direction, and the two locking arms 44 are flexible. The two locking arms 44 of the second fork 42 and the two retaining arms 40 of the first fork 38 can slide in a slideway defined by the radial opening 34 of the body 30. Each locking arm 44 has a C-shaped locking hook 50 at its free end, wherein the opening 52 of the C-shaped locking hook 50 faces the interior in the body 30 of the socket member 6. The openings 52 of the two C-shaped locking hooks 50 face each other.

[0114] As Figure 1 andFigure 2 As shown, in the illustrated embodiment, each flexible locking arm 44 of the sliding lock 8 has a front face 54 which, when the sliding lock 8 is engaged within the socket member 6, faces the end face 56 of the fluid line 4 being inserted, and this front face 54 is referred to as the front face 54 for interfering with the end portion 58 of the fluid line 4.

[0115] As Figure 1 and Figure 2 shown, in the illustrated embodiment, the front face 54 of each locking arm 44 includes an interference portion 60 having an inclined surface 62 that is inclined with respect to the axial insertion direction of the fluid line 4, and this inclined surface 62 faces the interior of the receiving hole 26 of the socket member 6. As Figure 3A shown, the interference portion 60 is arranged at a position below the middle of the receiving hole 26 of the socket member 6. When the sliding lock 8 is in the unlocked position within the socket member 6, when the fluid line 4 is inserted into the socket member 6, this inclined surface 62 is used to interfere with the end portion 58 of the fluid line 4.

[0116] As Figure 1 shown, in the illustrated embodiment, each C-shaped locking hook 50 further has a protrusion 64 axially protruding from the front face 54 at the bottom.

[0117] As Figure 2 shown, in the illustrated embodiment, the C-shaped locking hook 50 includes a protrusion 66 axially protruding from the back face opposite to the front face 54 of the locking arm 44 of the sliding lock 8, and this protrusion 66 is located at the middle of the C-shaped locking hook 50.

[0118] When the fluid line 4 is inserted into the socket member 6, the end portion 58 of the fluid line 4 interferes with the interference portion 60 of the locking arm 44 of the sliding lock 8 and causes the flexible locking arm 44 to undergo axial and then radial elastic deformation. In this state, the C-shaped locking hook 50 of the locking arm 44 disengages from the locking fastener 37, that is, the stop of the locking fastener 37 for the locking arm 44 is released. Further, since the setting position of the interference portion 60 of the locking arm 44 is below the middle of the receiving hole 26 of the socket member 6, that is, the contact position of the interference portion 60 of the locking arm 44 with the fluid line 4 is below the middle of the fluid line 4, and since the locking arm 44 is flexible, the locking arm 44 will generate a thrust under the action of its own restoring force, causing the sliding lock 8 to have a tendency to automatically move inward in the lateral direction towards the interior of the socket member 6, that is, the sliding lock 8 has a tendency to automatically move towards the locking position in the lateral direction.

[0119] As Figure 3A and Figure 3BAs shown, the sliding lock 8 is in the unlocked position within the socket member 6. When the sliding lock 8 is in this unlocked position, the top of the sliding lock 8 protrudes from the outer surface of the top of the socket member 6 by, for example, 3 millimeters to 6 millimeters, while when the sliding lock 8 is in the locked position (see Figure 6A and Figure 6C ), the top of the sliding lock 8 is substantially flush with the outer surface of the top of the socket member 6. Thus, an operator can reliably distinguish, based on vision or touch, whether the sliding lock 8 is in the unlocked position or the locked position within the socket member 6. Further, as will be described below, since the sliding lock 8 can only automatically move laterally to the locked position when the fluid line 4 is fully pushed into the socket member 6, the operator can also determine whether the fluid line 4 is properly installed in the socket member 6 based on whether the socket member 6 is in the locked position.

[0120] When the sliding lock 8 is in the unlocked position within the socket member 6, the bottom of each C-shaped locking hook 50 of the sliding lock 8 abuts against a corresponding locking fastener 37 in the body 30 of the socket member 6, and the locking member acts as a stop for the sliding lock 8 at this time. Thus, the sliding lock 8 will not be accidentally moved laterally to the locked position.

[0121] As Figure 3A and Figure 3B shown, in the illustrated embodiment, the body 30 of the socket member 6 includes wings 68 that extend circumferentially along the receiving hole 26 and are symmetrically arranged, and the wings 68 are flexible and adapted to elastically deform in the radial direction. Each wing 68 is provided with a wing protrusion 70 that protrudes radially inwardly into the receiving hole 26. The wings 68 and the wing protrusions 70 provided thereon serve as stop members. The wing protrusions 70 are arranged to be able to be embedded in the annular groove 28 of the fluid line 4. The wing protrusions 70 have inclined surfaces 72 that are inclined with respect to the axial insertion direction of the fluid line 4, and the inclined surfaces 72 face the inside of the receiving hole 26 of the socket member 6. When the fluid line 4 is inserted into the socket member 6, the inclined surfaces 72 are used to interfere with the end face 56 and the end portion 58 of the fluid line 4. The wing protrusions 70 of the body 30 of the socket member 6 are arranged closer to the entrance of the receiving hole 26 of the socket member 6 than the interference portion 60 of the sliding lock 8. Therefore, when the fluid line 4 is inserted into the socket member 6, the end face 56 and the end portion 58 of the fluid line 4 first interfere with the wing protrusions 70. The wing protrusions 70 are configured not to impede the insertion or extraction of the fluid line from the accommodating portion, especially when the fluid line is extracted when the wing protrusions 70 are located in the annular groove 28 of the fluid line, and the protrusions 70 will not increase the extraction force. It should be understood that in some embodiments, the inclined surface 72 of the wing protrusion 70 is a spherical surface or a wedge surface. Alternatively, the entire surface of the wing protrusion 70 is a spherical surface. That is to say, the wing protrusion 70 is a spherical protrusion. This can be more conducive to the insertion of the fluid line into the receiving hole 26 of the socket member 6 and the extraction from the receiving hole 26.

[0122] When the end 58 of the fluid pipeline 4 interferes with the wing protrusion 70 of the main body 30 of the socket member 6, the flexible wing 68 undergoes radial elastic deformation, such that the end 74 of each wing 68 faces the end 48 of each retaining arm 40 of the sliding lock 8, so that the end 74 of each wing 68 acts as a stop against the end 48 of each retaining arm 40. That is to say, when the wing 68 undergoes radial elastic deformation and is expanded, the wing 68 acts as a stop against the movement of the sliding lock 8 in the lateral direction.

[0123] As Figures 4A to 6D shown, a schematic diagram of each stage of the insertion of the fluid pipeline 4 into the quick connector 1 according to the first embodiment of the present invention is illustrated. The following, in conjunction with Figures 4A to 6D , describes the process of inserting the fluid pipeline 4 into the quick connector 1 of the present invention and connecting and locking it thereto.

[0124] As Figures 4A to 4D shown, in the illustrated embodiment, the fluid pipeline 4 is partially inserted into the socket member 6.

[0125] During the process of inserting the fluid pipeline 4 into the socket member 6 and reaching the Figures 4A to 4D position shown, the end 58 of the fluid pipeline 4 first contacts and interferes with the wing protrusion 70 of the main body 30 of the socket member 6, which causes the wings 68 to separate radially, so that the end 74 of the wing 68 faces the end 48 of the retaining arm 40 of the sliding lock 8 (as Figure 4C shown), and the wing 68 acts as a stop against the movement of the sliding lock 8 in the lateral direction.

[0126] As the fluid pipeline 4 is further pushed into the receiving hole 26 of the socket member 6, the end 58 of the fluid pipeline 4 further contacts the interference portion 60 of the locking arm 44 of the sliding lock 8. The fluid pipeline 4 exerts mechanical interference on the interference portion 60 of the locking arm 44 of the sliding lock 8 in the axial direction by pressure. This axial push first causes the locking arm 44 to move axially, but does not initially cause the locking arm 44 to separate radially. Since the protrusion 64 on the front surface 54 of the C-shaped locking hook 50 still abuts against the locking fastener 37 of the main body 30 of the socket member 6, it prevents the sliding lock 8 from laterally entering the clearance area 36 of the concave portion 32 of the socket member 6.

[0127] As Figure 4A shown, when the back surface of the locking arm 44 axially abuts against the inside of the main body 30 of the socket member 6, the locking arm 44 moves axially to the farthest position. In a specific embodiment where the protrusion 66 is arranged on the back surface of the locking arm 44, when the protrusion 66 abuts against the inside of the main body 30 of the socket member 6, the locking arm 44 moves axially to the farthest position. At this time, the locking arm 44 tends to deform under the action of the mechanical interference of the fluid pipeline 4 relative to the sliding lock 8.

[0128] As the fluid pipeline 4 is further advanced into the socket member 6, the fluid pipeline 4 continues to apply an axial pressure to the interference portion 60. However, since the locking arm 44 has abutted against the main body 30 of the socket member 6, at this time, the locking arm 44 is radially separated and reaches the maximum spacing distance, as Figure 4B shown. At this time, since the contact position between the interference portion 60 of the locking arm 44 and the fluid pipeline 4 is below the middle of the fluid pipeline 4, and since the locking arm 44 is flexible, the locking arm 44 will generate a thrust under the action of its own restoring force, causing the sliding lock 8 to have a tendency to automatically move inward in the transverse direction towards the interior of the socket member 6. However, since the wing portion 68 is still in a radially separated state, the end portion 74 of the wing portion 68 and the end portion 48 of the holding arm 40 of the sliding lock 8 are still in a relative positional relationship (as Figure 4C shown), and the wing portion 68 stops the movement of the sliding lock 8 in the transverse direction. That is to say, at this time, the sliding lock 8 cannot move to the locking position.

[0129] As Figure 4B shown, at this time, the C-shaped locking hook 50 is outside the locking fastener 37. And, as will be described below, during the downward transverse movement of the sliding lock 8 into the socket member 6, the C-shaped locking hook 50 moves around the locking fastener 37 in the clearance region 36 of the socket member 6.

[0130] From Figure 4D it can be seen that the wing protrusion 70 is located between the end portion 58 of the fluid pipeline 4 and the annular groove 28 at this stage.

[0131] As Figures 5A to 5D shown, it shows the stage when the fluid pipeline 4 is just inserted into the fixed position and the sliding lock 8 is moving towards the locking position. As Figure 5D shown, at this stage, the wing protrusion 70 of the main body 30 of the socket member 6 is embedded in the annular groove 28 of the fluid pipeline 4, and the flexible wing portion 68 radially retracts under the action of the restoring force and returns to the initial stationary position. As Figure 5C shown, the end portion 74 of the wing portion 68 is no longer opposite to the end portion 48 of the holding arm 40, but is staggered from each other, so that the blocking effect of the end portion 74 of the wing portion 68 on the end portion 48 of the holding arm 40 is released. That is to say, the movement of the sliding lock 8 in the transverse direction is no longer restricted by the wing portion 68.

[0132] When the fluid pipeline 4 is just inserted into the fixed position, the locking arm 44 is still in the state of being radially expanded by the fluid pipeline 4. Since the contact position between the interference part 60 of the locking arm 44 and the fluid pipeline 4 is below the middle part of the fluid pipeline 4, and since the locking arm 44 is flexible, the locking arm 44 will generate a thrust under the action of its own restoring force, causing the sliding lock 8 to have a tendency to automatically move inward in the transverse direction towards the inside of the socket part 6. Moreover, as described above, the movement of the sliding lock 8 in the transverse direction is no longer restricted by the wing part 68. Therefore, under the action of its own restoring force, the locking arms 44 move radially towards each other and retract, and also axially retract in the direction opposite to the direction along which the fluid pipeline 4 is inserted, so as to return to the initial stationary position of the locking arms 44. These two retraction movements generate a thrust on the sliding lock 8, causing the sliding lock 8 to automatically move transversely towards the inside of the socket part 6 within the concave part 32, as Figure 5B shown, until it reaches the locking position in the socket part 6. During this process, the C-shaped locking hook 50 moves around the locking fastener 37, and the C-shaped locking hook 50 moves from outside the locking fastener 37 to the opening 52 of the C-shaped locking hook 50 surrounding the locking fastener 37.

[0133] Figures 6A to 6D shows the stage where the sliding lock 8 is in the locking position and the sliding lock 8 realizes the locking of the fluid pipeline 4. After Figures 5A to 5D the stage shown, the sliding lock 8 moves to the locking position in the socket part 6, as Figure 6C shown, and the locking arms 44 of the sliding lock 8 have axially retracted to the initial stationary position, as Figure 6A shown; the locking fastener 37 is finally received within the opening 52 of the C-shaped locking hook 50, as Figure 6B shown. In this state, the sliding lock 8 can no longer move transversely upward in the main body 30 of the socket part 6. Moreover, in this state, since the holding arm 40 of the sliding lock 8 is embedded within the annular groove 28 of the fluid pipeline 4 (as Figure 6D shown), the fluid pipeline 4 is axially restricted within the socket part 6. Due to this arrangement, the locking of the fluid pipeline 4 within the socket part 6 is achieved, and the fluid pipeline 4 and the socket part 6 are firmly connected.

[0134] As Figure 6C shown, at this position, the top of the sliding lock 8 (i.e., the bottom of the U-shape of the first fork 38 and the second fork 42) is flush with the outer surface (the top surface in the drawing) of the socket part 6.

[0135] Figures 8 to 10B shows a quick connector 101 according to a second embodiment of the present disclosure.

[0136] The quick connector 101 according to the second embodiment is substantially the same in structure and operating principle as the quick connector 1 according to the first embodiment. The differences between the quick connector 101 and the quick connector 1 will be mainly introduced below, and the common features of the two will not be elaborated again.

[0137] As Figures 8 to 10B shown, the quick connector 101 mainly includes a joint head section 102, a socket member 106 for holding a fluid pipeline 104, and a sliding lock 108. Among them, an annular groove 128 is provided on the outer periphery of the fluid pipeline 104.

[0138] In the illustrated embodiment, the joint head section 102 is shown in the form of a straight pipe. It can be understood that the joint head section 102 can also be in the form of a bent pipe or a T-shaped tee pipe according to needs.

[0139] The socket member 106 has a main body 130. The main body 130 defines a receiving hole 126 and includes an inner main body part 131 and an outer main body part 133 that are sleeved with each other. In the illustrated embodiment, the joint head section 102 is integrally formed with the outer main body part 133 of the socket member 106. It can be understood that the joint head section 102 and the socket member 106 can also be connected to each other in a detachable manner as in the first embodiment.

[0140] A bump (not shown) may be provided at the bottom of the inner main body part 131, and the outer main body part 133 is correspondingly provided with an opening 157 that penetrates its circumferential wall and matches the bump. When the inner main body part 131 is inserted into the outer main body part 133, the bump of the inner main body part 131 can be snapped into the opening 157 of the outer main body part 133, thereby realizing the sleeving of the outer main body part 133 and the inner main body part 131. The inner main body part 131 and the outer main body part 133 are respectively provided with an inner radial opening 159 and an outer radial opening 161, and the inner radial opening 159 and the outer radial opening 161 together form a slideway, and the sliding lock 108 can be inserted into the slideway in the transverse direction T and slide therein.

[0141] The sliding lock 108 can move between an unlocked position and a locked position after being inserted into the main body 130 of the socket member 106. The sliding lock 108 is in the form of two forks. The first fork 138 has two holding arms 140, while the second fork 142 has two locking arms 144. The two forks are connected together via a U-shaped bottom 146. The two holding arms 140 of the first fork 138 are arranged to be able to be embedded in the annular groove 128 of the fluid pipeline 104 to hold and lock the fluid pipeline 104 in the axial direction.

[0142] The socket member 106 also has a stop member. The stop member is configured to stop the automatic movement of the sliding lock 108 in the lateral direction T towards the interior of the socket member 106 during the insertion of the fluid line 104 into the socket member 106, and to release the stop on the sliding lock 108 when the fluid line 104 is fully pushed into the body 130 of the socket member 106.

[0143] The stop member is provided on the inner body portion 131 and includes two wings 168 extending circumferentially along the bottom of the inner body portion 131 of the socket member 106 around the receiving hole 126. In the illustrated embodiment, the two wings 168 are symmetrically arranged. On each wing 168, there is provided a wing protrusion 170 protruding radially towards the interior of the receiving hole 126. The wing protrusion 170 is configured to be able to be embedded in the annular groove 128 of the fluid line 104. As Figure 8 、 Figure 9 and Figure 12D best shown in, in the illustrated embodiment, a part of the surface of the wing protrusion 170 is a spherical surface and another part of its surface is a wedge surface. It can be understood that the entire surface of the wing protrusion 170 can be a spherical surface. The wing protrusion 170 is adapted to interfere with the end face 156 and / or the end 158 of the fluid line 104 when the fluid line 104 is inserted into the socket member 106.

[0144] Referring to Figure 11B and Figure 12B , the wings 168 are configured such that when the wing protrusion 170 mechanically interferes with the end 158 of the fluid line 104, the end 174 of the wing 168 and the end 148 of the holding arm 140 are engaged with each other, and when the wing protrusion 170 is embedded in the annular groove 128 of the fluid line 104, the end 174 of the wing 168 and the end 148 of the holding arm 140 are disengaged from each other. Specifically, a part of the wing 168 opposite to the end 148 of the holding arm 140 is provided with teeth 169 protruding towards the end 148 of the holding arm 140; the end 148 of the holding arm 140 is provided with teeth 141 matching the teeth 169 of the wing 168, and the engagement between the holding arm 140 and the wing 168 is achieved through the teeth 141 and 169 to prevent the movement of the sliding lock 108 in the lateral direction T. The number of teeth 141 at the end 148 of the holding arm 140 can be more than the number of teeth 169 of the wing 168 to ensure that the teeth 169 of the wing 168 can be engaged with the teeth 141 of the holding arm 140.

[0145] In Figures 8 to 13D the second embodiment shown, the end 174 of the wing 168 and the end 148 of the holding arm 140 are opposite to each other in the radial direction. It can be understood that, as Figure 14As shown, in a variant of the second embodiment, the end portion 174' of the wing portion 168' and the end portion 148' of the retaining arm 140' can also be configured to be opposite in the axial direction when they are engaged with each other. In this case, the portion of the wing portion 168' opposite to the end portion 148' of the retaining arm 140' is provided with teeth 169' protruding in the axial direction toward the end portion 148' of the retaining arm 140', and the end portion 148' of the retaining arm 140' is provided with teeth 141' matching the teeth 169' of the wing portion 168'.

[0146] Compared with preventing the sliding lock 8 from moving in the transverse direction T by the opposite arrangement of the end portion 74 of the wing portion 68 and the end portion 48 of the retaining arm 40 of the sliding lock 8 in the first embodiment, preventing the sliding lock 108 from moving in the transverse direction T by the engagement of the teeth 169 of the wing portion 168 and the teeth 141 of the retaining arm 140 of the sliding lock 108 in the second embodiment is more reliable. Since the number of teeth 141 at the end portion 148 of the retaining arm 140 is more than the number of teeth 169 of the wing portion 168, even if the retaining arm 140 and the wing portion 168 are misaligned to a certain extent due to vibration, the teeth 169 of the wing portion 168 can still engage with the teeth 141 of the retaining arm 140, thereby reliably preventing the movement of the sliding lock 108.

[0147] When the fluid pipeline 104 is not inserted into the socket member 106, the wing portion 168 is in its initial position. At this time, the wing portion 168 and the retaining arm 140 are separated from each other.

[0148] Referring to Figures 11A to 11C , when the fluid pipeline 104 is partially inserted into the socket member 106, mechanical interference occurs between the end portion 158 of the fluid pipeline 104 and the wing protrusion 170 of the socket member 106. The wing portion 168 undergoes radial elastic deformation and the end portion 174 of the wing portion 168 moves radially outward, so that the teeth 169 of the wing portion 168 and the teeth 141 of the retaining arm 140 engage with each other, thereby preventing the sliding lock 108 from moving in the transverse direction T.

[0149] Referring to Figures 12A to 12D , when the fluid pipeline 104 is just fully inserted into the socket member 106, the wing protrusion 170 of the wing portion 168 is embedded in the annular groove 128 of the fluid pipeline 104. The wing portion 168 moves radially inward under the action of its own restoring force and returns to the initial position, and the teeth 169 of the wing portion 168 are disengaged from the teeth 141 of the retaining arm 140. That is to say, the blocking effect of the wing portion 168 on the retaining arm 140 is released, thereby allowing the sliding lock 108 to move downward in the transverse direction T. Combining Figure 11A and Figure 12A and Figure 12C it can be clearly seen that Figure 12A and Figure 12C the sliding lock 108 in

[0150] Reference Figures 13A to 13D , the sliding lock 108 is further moved downward in the transverse direction T to the locked position, at which time, the outer surface of the U-shaped bottom 146 of the sliding lock 108 is substantially flush with the outer surface of the outer main body portion 133. Thus, the operator can reliably judge whether the sliding lock 108 is in the locked position based on vision or touch.

[0151] According to the disclosed inventive concept, a reliable and leak-proof connection can be established between a fluid pipeline and a quick connector. The quick connector described and shown herein is smaller in size and has a visual error-proof function. During the insertion of the fluid pipeline, the sliding lock will not move to the locked position even under an external force. After the fluid pipeline is inserted into the fixed position, the sliding lock will automatically move to the locked position without pressing the sliding lock to the locked position through manual operation again, which is more convenient to operate.

[0152] Those skilled in the art will readily recognize from such discussion and from the accompanying drawings and claims that various changes, modifications, and variations can be made therein without departing from the true spirit and reasonable scope of the present invention as defined by the following claims.

Claims

1. A quick connector (1; 101), characterized in that, The quick connector (1; 101) includes a socket member (6; 106) and a sliding lock (8; 108). The socket member (6; 106) includes a body (30; 130) defining a receiving hole (26; 126) for receiving a fluid pipeline (4; 104) having an annular groove (28; 128) inserted in the axial direction. The sliding lock (8; 108) extends in the transverse direction (T) in a recess (32) in the body (30; 130) of the socket member (6; 106). The sliding lock (8; 108) is configured to radially elastically deform outwardly towards the outside of the socket member (6; 106) by mechanical interference with the end (58; 158) of the fluid pipeline (4; 104) during insertion of the fluid pipeline (4; 104) into the socket member (6; 106), and has a tendency to automatically move inwardly towards the inside of the socket member (6; 106) in the transverse direction (T) in response to this radial elastic deformation. The socket member (6; 106) further includes a stop member configured to radially elastically deform outwardly towards the outside of the socket member (6; 106) by mechanical interference with the end (58; 158) of the fluid pipeline (4; 104) during insertion of the fluid pipeline (4; 104) into the socket member (6; 106) to stop the automatic movement of the sliding lock (8; 108) inwardly towards the inside of the socket member (6; 106) in the transverse direction (T), and to release the stop on the sliding lock (8; 108) under the action of the elastic restoring force by releasing the mechanical interference with the end (58; 158) of the fluid pipeline (4; 104) when the fluid pipeline (4; 104) is fully pushed into the body (30; 130) of the socket member (6; 106). The sliding lock (8; 108) further includes at least one locking hook (50) that cooperates with a locking fastener (37) provided in the body (30; 130) of the socket member (6; 106). When the fluid pipeline (4; 104) is fully pushed into the body (30; 130) of the socket member (6; 106), the locking hook (50) moves around the locking fastener (37) and finally surrounds the locking fastener (37).

2. The quick connector (1; 101) according to claim 1, characterized in that, The sliding lock (8; 108) includes a first fork (38; 138) and a second fork (42; 142). The first fork (38; 138) includes two retaining arms (40; 140; 140') that can be embedded in the annular groove (28; 128) of the fluid pipeline (4; 104). The second fork (42; 142) includes two locking arms (44; 144), and each locking arm (44; 144) includes the locking hook (50). The locking hook (50) includes an opening (52) radially towards the inside of the socket member (6; 106).

3. The quick connector (1; 101) according to claim 2, characterized in that, The holding arm (40; 140; 140') is configured to include a stop surface (43) that prevents the fluid pipeline (4; 104) from being inserted into the receiving hole (26; 126) after the sliding lock (8; 108) accidentally moves into the locked position.

4. The quick connector (1; 101) according to claim 2, characterized in that, The stop member includes two wings (68; 168; 168') extending circumferentially along the receiving hole (26; 126) of the socket member (6; 106), and each wing (68; 168; 168') includes a wing protrusion (70; 170) protruding radially toward the inside of the socket member (6; 106).

5. The quick connector (1) according to claim 4, characterized in that, The wing (68) is configured such that when mechanical interference occurs between the wing protrusion (70) and the end (58) of the fluid pipeline (4), the end (74) of the wing (68) is opposite to the end (48) of the holding arm (40) of the sliding lock (8), and when the wing protrusion (70) is embedded in the annular groove (28) of the fluid pipeline (4), the end (74) of the wing (68) is offset from the end (48) of the holding arm (40) of the sliding lock (8).

6. The quick connector (101) according to claim 4, characterized in that, The main body (130) of the socket member (106) includes an outer main body portion (133) and an inner main body portion (131) sleeved with each other, and the stop member is provided on the inner main body portion (131).

7. The quick connector (101) according to claim 6, characterized in that, The wings (168; 168') extend circumferentially along the receiving hole (126) of the socket member (106) from the bottom of the inner main body portion (131).

8. The quick connector (101) according to claim 6, characterized in that, The wings (168; 168') are configured such that when mechanical interference occurs between the wing protrusions (170) and the ends (158) of the fluid pipeline (104), the ends (174; 174') of the wings (168; 168') are engaged with the ends (148; 148') of the holding arm (140; 140'), and when the wing protrusions (170) are embedded in the annular groove (128) of the fluid pipeline (104), the ends (174; 174') of the wings (168; 168') are disengaged from the ends (148; 148') of the holding arm (140; 140').

9. The quick connector (101) according to claim 8, characterized in that, The portions of the wings (168; 168') opposite to the ends (148; 148') of the holding arm (140; 140') are provided with teeth (169; 169') protruding toward the ends (148; 148') of the holding arm (140; 140'); the ends (148; 148') of the holding arm (140; 140') are provided with teeth (141; 141') matching the teeth (169; 169') of the wings (168; 168'), and the engagement of the wings (168; 168') is achieved through the teeth (169, 141; 169', 141') to prevent the lateral movement of the sliding lock (108).

10. The quick connector (101) according to claim 9, characterized in that, The number of teeth (141; 141') of the end portion (148; 148') of the holding arm (140; 140') is greater than the number of teeth (169; 169') of the wing portion (168; 168').

11. The quick connector (1; 101) according to any one of claims 5-10, characterized in that, The wing protrusion (70; 170) is configured not to obstruct the insertion or extraction of the fluid pipeline (4; 104) from the receiving hole (26; 126).

12. The quick connector (1; 101) according to claim 1, characterized in that, The sliding lock (8; 108) includes an interference portion (60) provided on its front surface (54). The interference portion (60) is inclined with respect to the axial direction, and the interference portion (60) is provided to be below the middle of the receiving hole (26; 126) of the socket member (6; 106).

13. The quick connector (1; 101) according to claim 1, characterized in that, The main body (30; 130) of the sliding lock (8; 108) and the socket member (6; 106) are configured such that during mechanical interference, before the radial elastic deformation of the sliding lock (8; 108), the locking hook (50) axially protrudes into the main body (30; 130) of the socket member (6; 106), so that in response to the radial elastic deformation and axial elastic deformation of the sliding lock (8; 108), the locking hook (50) moves around the locking fastener (37) and finally surrounds the locking fastener (37).

14. The quick connector (1; 101) according to claim 1, characterized in that, The bottom of the locking hook (50) initially abuts against the locking fastener (37), and the locking hook (50) is in the concave portion (32) of the main body (30; 130) of the socket member (6; 106). The locking hook (50) is arranged in the clearance area (36).

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