CN213871595U

CN213871595U - Quick connector for connecting a male connector and a flexible pipe

Info

Publication number: CN213871595U
Application number: CN202022340057.XU
Authority: CN
Inventors: 侯海洋; 阙峰
Original assignee: Rayconnect Fluid Handling System Zhenjiang Co ltd; A Raymond SARL
Current assignee: Rayconnect Fluid Handling System Zhenjiang Co ltd; A Raymond SARL
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-08-03
Anticipated expiration: 2030-10-20

Abstract

The utility model provides a quick connector for connecting male joint and flexible pipe. This quick connector includes: a first socket member including an outer sleeve and an inner sleeve coaxially disposed with respect to the axial direction, the outer sleeve and the inner sleeve being separately molded parts and coupled to each other, the flexible tube being adapted to be inserted and clamped between the outer sleeve and the inner sleeve in the axial direction; a second socket member arranged along the axial direction and coupled to each other, the second socket member configured to receive a male fitting; and a locking member configured to cooperate with the second socket member to lock the male fitting in the second socket member. According to the utility model discloses a quick connector adopts split type structure, and easily manufacturing and manufacturing cost are lower.

Description

Quick connector for connecting a male connector and a flexible pipe

Technical Field

The present invention relates generally to quick connector technology, and specifically to a quick connector for connecting a male connector and a flexible pipe.

Background

Quick connectors are commonly used for connection between pipes and are of various construction. Generally, one end of the quick connector may be directly connected with the first pipe and the other end is connected with the second pipe through a male connector, thereby connecting the first pipe and the second pipe to each other.

Quick connectors have a wide range of applications in the field of vehicles, for example in liquid and/or vapour lines in vehicles, such as in turbo charging systems. Quick connectors for turbocharger systems require the connection of two pressurized fluid lines, and the robustness and reliability of the quick connector connection is of paramount importance. At present, a quick connector for a turbocharging system is integrally formed by adopting a metal material, and the production process is complex and has higher difficulty, so that the quick connector has higher manufacturing cost.

SUMMERY OF THE UTILITY MODEL

The object of the utility model is to solve the problem that exists among the above-mentioned prior art, provide an improved quick connector who is used for connecting male joint and flexible pipe.

To this end, the utility model provides a quick connector for connecting male joint and flexible pipe, the quick connector includes: a first socket member including an outer sleeve and an inner sleeve coaxially disposed with respect to an axial direction, the outer sleeve and the inner sleeve being separately molded components and coupled to each other, the flexible tube being adapted to be inserted in the axial direction and sandwiched between the outer sleeve and the inner sleeve; a second socket member arranged along the axial direction and coupled to each other, the second socket member configured to receive the male fitting; and a lock configured to cooperate with the second socket member to lock the male fitting in the second socket member.

According to the utility model discloses a quick connector adopts split type structure, compares in integral type structure, is showing the degree of difficulty that has reduced production technology, has reduced manufacturing cost.

In accordance with the above-described concepts, the present invention may further include any one or more of the following alternatives.

In some alternatives, the outer sleeve and the inner sleeve are coupled to each other by a coupling arrangement, in particular a cross-over coupling arrangement, preferably configured for preventing relative rotation between the outer sleeve and the inner sleeve.

In some alternatives, the coupling structure comprises: a tongue projecting from a circumferential rim of the outer sleeve; a through hole provided in a circumferential wall of the inner sleeve and arranged to allow the tongue to be inserted into the inner sleeve through the through hole in the axial direction, wherein the coupling structure is configured such that: an outer surface of the tongue portion abuts an inner surface of a circumferential wall of the inner sleeve when the tongue portion is inserted into the inner sleeve.

In some alternatives, the first sleeve member further includes an abutment structure configured to abut an inner surface of the outer sleeve against an outer surface of the inner sleeve,

in some alternatives, the abutment structure comprises: a first abutment defined by a first annular portion of the circumferential wall of the outer sleeve; a second abutment defined by a second annular portion of the circumferential wall of the inner sleeve; wherein an inner surface of the first abutment is adapted to abut an outer surface of the second abutment.

In some alternatives, the outer sleeve and the inner sleeve are also coupled to each other by welding.

In some alternatives, the first socket member comprises a stop for stopping the flexible pipe. By providing the stop portion, feedback can be given to the installer when the flexible tube is inserted in place, and the installer, upon receiving the feedback, can, for example, further squeeze a portion of the circumferential wall of the inner sleeve towards the outer sleeve to clamp the flexible tube between the inner and outer sleeves.

In some alternatives, the stop portion is in the form of a tab projecting inwardly in a radial direction from a circumferential wall of the outer sleeve; and/or the limiting part is in the form of a step surface, and the step surface is arranged on the circumferential wall of the inner sleeve.

In some alternatives, the first and second socket members are coupled to each other by snapping.

In some alternatives, the outer sleeve of the first socket member comprises an annular raised section that is raised outwardly in a radial direction and extends in a circumferential direction; the second socket member comprises a second socket member body and a plurality of jaws extending from the second socket member body in the axial direction and arranged at intervals in the circumferential direction, wherein the plurality of jaws are adapted to be snapped into engagement with the annular ridge section.

In some alternatives, the second nesting member and the inner sleeve collectively define a receiving channel along the axial direction for receiving the male fitting.

In some alternative forms, the locking member is adapted to move in a direction perpendicular to the axial direction between an unlocked position and a locked position, the locking member having at least one locking portion, wherein when the locking member is in the unlocked position, the at least one locking portion is positioned outside the receiving channel, and when the male fitting is inserted into position within the receiving channel and the locking member is in the locked position, the at least one locking portion is positioned in a circumferential groove outside the male fitting to lock the male fitting.

In some alternatives, a Y-ring seal is provided between the second socket member and the inner sleeve to seal an annular gap between the inner sleeve and the male fitting. By adopting the Y-shaped sealing ring, the insertion resistance of the male joint when the male joint is inserted into the receiving channel can be reduced, and the labor intensity of an installer is reduced.

In some alternatives, the outer sleeve and the inner sleeve are each stamped from metal, and/or the second nesting component is injection molded from plastic. The inner sleeve and the outer sleeve of the first sleeve component for connecting the flexible pipe are respectively stamped by metal parts, so that the difficulty of the production process is effectively reduced, and the production cost is reduced. The second sleeving member for connecting the male connector is formed by injection molding, so that the production efficiency can be obviously improved, and the production cost is reduced.

According to the utility model discloses a quick connector for connecting male joint and flexible pipe has adopted split type structure, compares in integral type structure, is showing the degree of difficulty that has reduced production technology, still allows to select more suitable production technology and material to the part of difference, further improves production efficiency, reduction in production cost.

Drawings

Other features and advantages of the present invention will be better understood from the following detailed description of alternative embodiments, taken in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts, and in which:

fig. 1 is a perspective view of a quick connector and a male fitting adapted to connect with the quick connector according to an exemplary embodiment of the present invention, wherein the male fitting is in a connected state with the quick connector;

FIG. 2 is an exploded view of the quick connector and male fitting of FIG. 1;

FIGS. 3A and 3B are side and cross-sectional views, respectively, of the quick connector and male fitting of FIG. 1;

FIGS. 4A and 4B are front and cross-sectional views, respectively, of the first ferrule member of the quick connector of FIG. 1;

FIGS. 5A-5C are perspective and cross-sectional views, respectively, of the outer sleeve of the first socket member of FIGS. 4A and 4B from two angles;

FIGS. 6A and 6B are perspective and front views, respectively, of an inner sleeve of the first telescoping member of FIGS. 4A and 4B;

FIGS. 7A and 7B are perspective views from two angles of the second ferrule member and the locking member, respectively, of the quick connector of FIG. 1, with the locking member in the locked position;

FIGS. 8A and 8B are front and side views, respectively, of the second ferrule member and the locking member of the quick connector of FIG. 1, with the locking member in an unlocked position;

FIGS. 9A and 9B are front and side views, respectively, of the second ferrule member and the locking member of the quick connector of FIG. 1, with the locking member in a locked position;

FIG. 10 is a perspective view of the male fitting of FIG. 1;

FIG. 11 is a perspective view of the locking member of the quick connector of FIG. 1; and

fig. 12A and 12B are perspective and cross-sectional views, respectively, of a Y-ring suitable for use in the quick connector of fig. 1.

Detailed Description

The making and using of the embodiments are discussed in detail below. It should be understood, however, that the detailed description and specific examples, while indicating the particular manner of making and using the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The description herein of the structural positions of the respective components, such as the directions of upper, lower, top, bottom, etc., is not absolute, but relative. When the respective components are arranged as shown in the drawings, these direction expressions are appropriate, but when the positions of the respective components in the drawings are changed, these direction expressions are changed accordingly.

In the present invention, the circumferential direction of the cylindrical or annular member means a direction along the circumference of the member, the axial direction of the member means a direction perpendicular to the circumferential direction of the member, and the radial direction of the member means a direction perpendicular to the axial direction of the member.

Fig. 1-3B illustrate a quick connector 100 and a male fitting 200 adapted to connect with the quick connector 100 according to an exemplary embodiment of the present invention.

Referring to fig. 1-3B, the quick connector 100 may be used to connect a male fitting 200 and a flexible pipe (not shown). The quick connector 100 includes: a first socket member 102, the first socket member 102 comprising an outer sleeve 104 and an inner sleeve 106 coaxially arranged with respect to the axial direction a, the outer sleeve 104 and the inner sleeve 106 being separately formed parts and coupled to each other, a flexible tube being adapted to be inserted and clamped between the outer sleeve 104 and the inner sleeve 106 along the axial direction a; a second socket member 108, the second socket member 108 and the first socket member 102 being arranged along the axial direction a and being coupled to each other, the second socket member 108 being configured for receiving the male joint 200; and a locking member 110, the locking member 110 configured to cooperate with the second box member 108 to lock the male fitting 200 in the second box member 108.

Fig. 4A-6B illustrate the first socket member 102 and the outer and

inner sleeves

104, 106 that make up the first socket member 102.

Referring to fig. 3B-4B, the first socket member 102 is configured for connection with a flexible pipe. In the illustrated embodiment, the first telescoping member 102 can include an outer sleeve 104 and an inner sleeve 106 that are generally cylindrical in shape. The outer sleeve 104 and the inner sleeve 106 are two separately formed components. Alternatively, the outer sleeve 104 and the inner sleeve 106 may each be stamped from metal. Compared to the existing one-piece construction, the split construction of the outer sleeve 104 and the inner sleeve 106 significantly reduces the difficulty of the production process, reducing the production cost.

In the illustrated embodiment, the outer sleeve 104 and the inner sleeve 106 are coaxially disposed about the axial direction a and are connected to each other. The outer sleeve 104 includes a first outer sleeve end 112 and a second outer sleeve end 114. The inner sleeve 106 includes a first inner sleeve end 116 and a second inner sleeve end 118. Wherein the flexible tube is adapted to be inserted and clamped in the axial direction a between the first outer sleeve end 112 and the first inner sleeve end 116.

The first socket member 102 may further include a stopper for stopping the flexible pipe. In the illustrated embodiment, the outer sleeve 104 is provided with a first stop in the form of a tab 120, the tab 120 projecting inwardly in a radial direction from the circumferential wall of the outer sleeve 104. Alternatively, the tabs 120 may be punched directly from the circumferential wall of the outer sleeve 104 and formed by bending. In the illustrated embodiment, the outer sleeve 104 includes a plurality of tabs 120 (e.g., four tabs 120 as shown in fig. 5A) spaced apart in the circumferential direction. In the illustrated embodiment, the inner sleeve 106 is provided with a second stop portion in the form of a stepped surface (i.e., a first stepped surface 122), the first stepped surface 122 being provided on a circumferential wall of the inner sleeve 106. The first step face 122 may be a surface of a radial portion 126 of a protruding section 124 of the inner sleeve 106. In the illustrated embodiment, the tab 120 and the first step surface 122 collectively form a stop for limiting the flexible tube. It will be appreciated that the flexible tube retaining structure may be provided on only one of the outer sleeve 104 and the inner sleeve 106.

In the actual installation process, the flexible tube is first inserted between the first outer sleeve end 112 and the first inner sleeve end 116, and after the flexible tube is inserted in place (i.e., the end of the flexible tube abuts the stop), a special tool is used to squeeze part of the circumferential wall of the inner sleeve 106 towards the outer sleeve 104 to clamp the flexible tube between the inner sleeve 106 and the outer sleeve 104. Accordingly, as shown in FIG. 5B, the circumferential wall of the outer sleeve 104 is also provided with a plurality of slots 128 spaced circumferentially thereon for engagement with a special tool.

With continued reference to fig. 4A and 4B, in some embodiments, the outer sleeve 104 and the inner sleeve 106 may be coupled to one another by a coupling structure, particularly a interpenetrating coupling structure.

In the illustrated embodiment, the coupling structure can include a tongue 130 (fig. 5C) disposed at the second outer sleeve end 114 and a through hole 132 (fig. 6A) disposed at the second inner sleeve end 118.

Referring collectively to fig. 5C, the tongue 130 protrudes from a circumferential rim 134 at the second outer sleeve end 114 of the outer sleeve 104. In the illustrated embodiment, tongue 130 may include a proximal portion 136 relatively close to circumferential rim 134 and a distal portion 138 relatively far from circumferential rim 134. The proximal portion 136 extends towards the center of the outer sleeve 104 at an angle to the axial direction a, and the distal portion 138 extends in the axial direction a such that the tongue 130 is in an overall bent shape. With combined reference to fig. 6A, a through hole 132 is provided in the circumferential wall of the inner sleeve 106 at the second inner sleeve end 118 and is arranged to allow the tongue 130 to be inserted through the through hole 132 into the inner sleeve 106 in the axial direction a. In the illustrated embodiment, the through hole 132 is provided in a frustoconical section 139 of the inner sleeve 106 (the circumferential wall of which is angled to the axial direction a) such that first and

second edges

140, 142 of the through hole 132 opposite each other are at a distance in the radial direction to allow the tongue 130 to pass through the through hole 132 in the axial direction a. As shown in fig. 4B, when the tongue portion 130 is inserted into the inner sleeve 106 through the through hole 132, an outer surface of the tongue portion 130 (specifically, an outer surface of the distal end portion 138 of the tongue portion 130) may abut against an inner surface of a circumferential wall of the inner sleeve 106, thereby coupling the outer sleeve 104 and the inner sleeve 106 to each other. In the illustrated embodiment, the outer sleeve 104 may include a plurality of tongues 130 (e.g., four tongues 130 as shown in fig. 5B) disposed at intervals in the circumferential direction; accordingly, the inner sleeve 106 may include a plurality of through holes 132 (e.g., four through holes 132) disposed at intervals in the circumferential direction to mate with the plurality of tongues 130. By such a coupling structure of the outer sleeve 104 and the inner sleeve 106 penetrating into each other, the outer sleeve 104 and the inner sleeve 106 can be supported with each other, the overall strength of the first sleeving member 102 is enhanced, the overall stable holding of the first sleeving member 102 at the end of the second sleeving member 108 is facilitated (the specific holding manner will be described in detail later), and secondly, when the other end of the inner sleeve 106 opposite to the penetrating end is pressed by a special tool, the influence of the pressing operation on other sections of the inner sleeve 106 can be effectively avoided; on the other hand, such a cross-over coupling arrangement may prevent relative rotation between the outer sleeve 104 and the inner sleeve 106, further facilitating stable retention of the flexible tube in the first sleeve member 102.

With continued reference to figure 4B, in some embodiments, the first sleeve member 102 can include an abutment structure configured to abut an inner surface of the outer sleeve 104 against an outer surface of the inner sleeve 106. Optionally, the abutment structure comprises a first abutment 144 and a second abutment 146. The first abutment 144 may be defined by a first annular portion of the circumferential wall of the outer sleeve 104. In the illustrated embodiment, the first annular portion may be an axial portion of the recessed section 150 of the outer sleeve 104. The second abutment 146 may be defined by a second annular portion of the circumferential wall of the inner sleeve 106. In the illustrated embodiment, the second annular portion may be an axial portion of the protruding section 124 of the inner sleeve 106. Wherein the inner surface of the first abutment 144 is adapted to abut the outer surface of the second abutment 146. This abutment also enhances the support of the outer and

inner sleeves

104, 106 from one another, and also effectively avoids the effect of the swaging operation on other sections of the inner sleeve 106 when the other end of the inner sleeve 106, opposite the piercing end, is swaged with a special tool.

Furthermore, as shown in fig. 4A and 4B, in some embodiments, the above-described coupling and abutment structures may be used simultaneously, and in cooperation with each other, the overall strength of the first telescoping member 102 may be better enhanced, preventing the inner sleeve 106 from being undesirably deformed by the swaging operation, and facilitating more stable retention of the flexible tube in the first telescoping member 102.

Both the coupling structure and the abutment structure described above can be easily formed by a stamping process.

The outer sleeve 104 and the inner sleeve 106 may also be coupled to each other by welding to further strengthen the coupling of the outer sleeve 104 and the inner sleeve 106. The welding locations include, but are not limited to, the abutment of the tongue 130 with the inner sleeve 106 and the abutment of the first and

second abutments

144 and 146.

Fig. 7A to 9B and 11 show a second socket member 108 and a lock 110 adapted to cooperate with the second socket member 108 according to an exemplary embodiment of the present invention. Fig. 10 illustrates an example of a male fitting 200 adapted to connect with the second box member 108. Alternatively, the second socket member 108 may be injection molded, for example, from plastic, to reduce production costs and increase production efficiency. Alternatively, the locking member 110 may be made of metal to obtain a high locking force to ensure a secure coupling of the male fitting 200 with the second socket member 108.

Referring to fig. 2, 3B, and 7A and 7B, in the illustrated embodiment, the first and

second socket members

102 and 108 are coupled to each other by snapping. The second box member 108 may include a second box member body 154 and a plurality of jaws 156 extending from the second box member body 154 in the axial direction a and spaced apart in the circumferential direction. The free end of each pawl 156 may be provided with a tab 158 (as best shown in fig. 7B). The outer sleeve 104 of the first socket member 102 may include an annular ridge section 160 that ridges outward in the radial direction and extends in the circumferential direction (fig. 5C). Wherein the plurality of jaws 156 of the second socket member 108 may snap into engagement with the annular raised section 160 of the outer sleeve 104.

As exemplarily shown in fig. 3B, the tab 158 of each pawl 156 of the second nesting member 108 may abut the annular ridge section 160 and the circumferential edge 161 at the second inner sleeve end 118 of the inner sleeve 106 may abut the second nesting member body 154 such that the first and

second nesting members

102, 108 are coupled to each other.

With combined reference to fig. 3B, 7A, and 10, in the illustrated embodiment, the second nesting member 108 and the inner sleeve 106 collectively define a receiving channel 162 along the axial direction a for receiving the male fitting 200. The circumferential inner side of the second nesting member 108 may be provided with a guide recess 164 (see fig. 7A). The outer side of the male fitting 200 may be correspondingly provided with a guide block 202 (see fig. 10). During insertion of the male fitting 200 into the receiving channel 162, the guide recess 164 may engage the guide block 202 to determine the installed orientation of the male fitting 200.

Referring to fig. 7A and 7B, the second ferrule member 108 includes a window 168 that allows the locking element 110 to partially enter the interior of the second ferrule member 108 and a retaining ledge 170 for retaining the locking element 110. In the illustrated embodiment, the window 168 is disposed on the second box member body 154, and the retention ledge 170 protrudes outward from the second box member body 154 and includes a retention recess 172 and a guide channel 174. The function of these structures will be explained in detail below.

Referring to fig. 11, in the illustrated embodiment, the lock 110 has two symmetrically disposed clamp arms 176. Each of the clip arms 176 includes a locking portion 178 for locking the male fitting 200. In the illustrated embodiment, each clip arm 176 includes two locking portions 178 to facilitate more secure locking of the male fitting 200. The locking element 110 further comprises two symmetrically arranged retaining arms 180 for retaining the locking element 110 on the second docking member 108. Each retaining arm 180 extends perpendicularly from the free end of the respective clip arm 176 to the clip arm 176.

The locking member 110 is adapted to move in a direction perpendicular to the axial direction a between an unlocked position and a locked position.

Referring to fig. 8A and 8B, when the lock 110 is in the unlocked position, the retaining arm 180 of the lock 110 engages the retaining recess 172 on the second docking member 108 so that the lock 110 can be retained on the second docking member 108. At this time, the locking portion 178 of the locking member 110 is positioned outside the receiving channel 162, thereby allowing the male connector 200 to be freely inserted into and withdrawn from the receiving channel 162.

Referring to fig. 9A and 9B, when the locking member 110 is moved from the unlocked position to the locked position in a direction perpendicular to the axial direction a, the retaining arms 180 of the locking member 110 will move down the guide channels 174 until abutting the second socket member body 154, and at the same time, the locking portions 178 of the locking member 110 will pass through the windows 168 in the second socket member body 154 into the receiving channels 162. When the male fitting 200 is inserted into position within the receiving channel 162 and the locking member 110 is in the locked position, the locking portion 178 is then positioned in a circumferential groove 204 (see fig. 10) outside the male fitting 200 to lock the male fitting 200.

Referring to figure 3B and figures 12A and 12B, a Y-ring 182 is provided between the second nesting member 108 and the inner sleeve 106 to seal the annular gap between the inner sleeve 106 and the male fitting 200. As such, no fluid leakage occurs when fluid flows in the quick connector 100 from the male connector 200 to the inner sleeve 106 or from the inner sleeve 106 to the male connector 200. In the illustrated embodiment, the second box member 108 includes an annular flange 184 (fig. 7B) that protrudes from the second box member body 154 generally along the axial direction a. In the radial direction of the second socket member 108, the annular flange 184 is located inside the pawl 156. The Y-ring 182 is disposed between an annular flange 184 of the second socket member 108 and a second stepped surface 186 of the inner sleeve 106. The Y-seal 182 is arranged such that its opening 187 faces the second step face 186 of the inner sleeve 106. As such, the insertion resistance when the male connector 200 is inserted into the receiving channel 162 can be reduced.

It should be understood that the embodiments shown in fig. 1-12B illustrate only the shape, size and arrangement of the various optional components of the quick connector according to the present invention, however, it is merely illustrative and not limiting and that other shapes, sizes and arrangements may be adopted without departing from the spirit and scope of the present invention.

The technical content and technical features of the present invention have been disclosed above, but it should be understood that various changes and modifications of the concept disclosed above can be made by those skilled in the art under the inventive concept of the present invention, and all fall within the scope of the present invention. The above description of embodiments is intended to be illustrative, and not restrictive, and the scope of the invention is defined by the appended claims.

Claims

1. A quick connector for connecting a male fitting and a flexible pipe, the quick connector comprising:

a first socket member including an outer sleeve and an inner sleeve coaxially disposed with respect to an axial direction, the outer sleeve and the inner sleeve being separately molded components and coupled to each other, the flexible tube being adapted to be inserted in the axial direction and sandwiched between the outer sleeve and the inner sleeve;

a second socket member arranged along the axial direction and coupled to each other, the second socket member configured to receive the male fitting; and

a lock configured to mate with the second socket member to lock the male fitting in the second socket member.

2. The quick connector for connecting a male fitting and a flexible pipe according to claim 1, wherein the outer sleeve and the inner sleeve are coupled to each other by a coupling structure.

3. The quick connector for connecting a male fitting and a flexible pipe according to claim 2, wherein the outer sleeve and the inner sleeve are coupled to each other by a piercing coupling structure.

4. The quick connector for connecting a male fitting and a flexible pipe according to claim 2, wherein the coupling structure is configured for preventing relative rotation between the outer sleeve and the inner sleeve.

5. The quick connector for connecting a male fitting and a flexible pipe according to claim 2, wherein the coupling structure comprises:

a tongue projecting from a circumferential rim of the outer sleeve;

a through hole provided in a circumferential wall of the inner sleeve and provided to allow the tongue portion to be inserted into the inner sleeve through the through hole in the axial direction,

wherein the coupling structure is configured such that: an outer surface of the tongue portion abuts an inner surface of a circumferential wall of the inner sleeve when the tongue portion is inserted into the inner sleeve.

6. The quick connector for connecting a male fitting to a flexible pipe as recited in claim 2, wherein the first sleeve member further comprises an abutment structure configured to abut an inner surface of the outer sleeve against an outer surface of the inner sleeve.

7. The quick connector for connecting a male fitting and a flexible pipe according to claim 6, wherein the abutment structure comprises:

a first abutment defined by a first annular portion of the circumferential wall of the outer sleeve;

a second abutment defined by a second annular portion of the circumferential wall of the inner sleeve;

wherein an inner surface of the first abutment is adapted to abut an outer surface of the second abutment.

8. The quick connector for connecting a male fitting and a flexible pipe according to claim 2, wherein the outer sleeve and the inner sleeve are further coupled to each other by welding.

9. The quick connector for connecting a male fitting and a flexible pipe according to any one of claims 1 to 8, wherein the first socket member comprises a stopper portion for stopping the flexible pipe.

10. The quick connector for connecting a male fitting to a flexible pipe according to claim 9, wherein the stop is in the form of a tab projecting inwardly in a radial direction from a circumferential wall of the outer sleeve; and/or

The limiting part is in the form of a step surface, and the step surface is arranged on the circumferential wall of the inner sleeve.

11. The quick connector for connecting a male fitting and a flexible pipe according to any one of claims 1 to 8, characterized in that the first and second socket members are coupled to each other by snapping.

12. The quick connector for connecting a male fitting to a flexible pipe according to claim 11, wherein the outer sleeve of the first socket member comprises an annular ridge section that is outwardly ridged in a radial direction and extends in a circumferential direction;

the second box member includes a second box member body and a plurality of jaws extending from the second box member body in the axial direction and spaced apart in a circumferential direction,

wherein the plurality of jaws are adapted to snap-fit with the annular ridge section.

13. The quick connector for connecting a male fitting to a flexible pipe according to any one of claims 1 to 8, wherein the second socket member and the inner sleeve together define a receiving channel in the axial direction for receiving the male fitting.

14. The quick connector for connecting a male fitting to a flexible pipe according to claim 13, wherein the locking member is adapted to move in a direction perpendicular to the axial direction between an unlocked position and a locked position, wherein the locking member has at least one locking portion that is positioned outside the receiving channel when the locking member is in the unlocked position and is positioned in a circumferential groove outside the male fitting to lock the male fitting when the male fitting is inserted in place in the receiving channel and the locking member is in the locked position.

15. The quick connector for connecting a male fitting to a flexible pipe as claimed in claim 13, wherein a Y-ring seal is provided between the second socket member and the inner sleeve to seal an annular gap between the inner sleeve and the male fitting.

16. The quick connector for connecting a male fitting and a flexible pipe according to any one of claims 1 to 8, characterized in that the outer sleeve and the inner sleeve are each stamped from metal and/or the second socket member is injection molded from plastic.