A quick connector

Abstract

The utility model belongs to the technical field of pipe joint, especially point to a kind of fast plug connector, it includes: male connector, with insertion end, annular protruding part is provided on the insertion end;Female connector, with insertion end, locking catch installation part and step sealing part are sequentially provided in the insertion end, through hole is respectively formed in the left and right side walls of locking catch installation part, the inner wall of its front and back side is respectively formed with the avoiding part, the axial length of avoiding part is 8-12mm;Sealing ring, installation is in step sealing part;Baffle ring, with step sealing part together form the installation groove of installation sealing ring;Locking catch, with pressing portion, arc elastic part and clamping portion.The utility model is detachable fast plug connector, with simple structure, easy to install and other advantages, avoiding groove can be basically adapted to the conventional safety ring of market non-detachable, only need to replace baffle ring and locking catch into safety ring, can become non-detachable fast plug connector, to meet the needs of different scenes, save production cost simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of pipe fittings and connectors, and specifically refers to a quick-connect connector. Background Technology

[0002] Quick-connect couplings, also known as quick-connect plugs, offer significant advantages in situations where piping assembly space is limited or connection operations are difficult due to their plug-and-play nature.

[0003] Currently, these quick-connect fittings are widely used in pipeline connections in automotive water cooling systems, intercooler piping, and energy storage systems. Depending on their structure, quick-connect fittings are mainly divided into two types: non-removable and detachable, to meet the needs of different application scenarios. For example, non-removable quick-connect fittings are often used in automotive crankcase ventilation piping connections to ensure high reliability and sealing; while detachable quick-connect fittings are commonly used in energy storage system piping for easier daily maintenance and quick repairs.

[0004] The above quick-connectors have the following problems:

[0005] 1. Some detachable quick-connect connectors have problems such as complex structure and inconvenient installation.

[0006] 2. The female connector structures of two quick-connect couplings from the same manufacturer on the market are different, requiring a different mold for each, which increases the mold-making cost. Utility Model Content

[0007] The purpose of this invention is to provide a quick-connect connector that is simple in structure, easy to assemble and disassemble, and has low production cost.

[0008] The purpose of this utility model is achieved as follows:

[0009] A quick-connect connector includes: a male connector with a hollow insertion end and an annular protrusion thereon; a female connector with a mating insertion end, wherein a locking mounting portion and a stepped sealing portion are sequentially arranged inside the mating insertion end; the locking mounting portion has through openings on its left and right side walls and clearance portions on its front and rear inner walls, the axial length of the clearance portions being 8-12 mm; a sealing ring installed in the stepped sealing portion for sealing the gap between the insertion end and the mating insertion end; a retaining ring installed in the stepped sealing portion and forming a mounting groove for installing the sealing ring together with the stepped sealing portion; and a locking element having two pressing portions located in the through openings, two arc-shaped elastic portions disposed between the pressing portions, and a snap-fit ​​portion disposed on the arc-shaped elastic portions; when the male connector is inserted, the annular protrusion can be limited between the retaining ring and the snap-fit ​​portion; when the pressing portion of the locking element is pressed, the arc-shaped elastic portions can deform toward the clearance portions and disengage the snap-fit ​​portion from the annular protrusion, thereby realizing the disassembly of the male connector.

[0010] The quick-connect connector of this utility model also has the following features: the avoidance part is an avoidance groove; an outer limiting part extends outward from the outer side of the arc-shaped elastic part, and the outer limiting part is located in the avoidance groove to limit the position of the locking element.

[0011] The quick-connect connector of this utility model also has the following features: the upper surfaces of the pressing part, the arc-shaped elastic part, and the outer limiting part are flush; the upper surface of the through opening and the upper surface of the relief groove are flush; and the upper surface of the outer limiting part can abut against the upper surface of the relief groove.

[0012] The quick-connector of this utility model also has the following feature: the axial length of the clearance groove is 10-11.5mm.

[0013] The quick-connector of this utility model also has the following feature: the retaining ring has an annular retaining ring body and a plurality of abutting bosses disposed on the annular retaining ring body, with one end of the abutting boss abutting against the end face of the stepped sealing part and the other end abutting against the annular protrusion.

[0014] The quick-connector of this utility model also has the feature that the sum of the axial lengths of the abutment boss, the annular protrusion, and the locking element is adapted to the axial length of the clearance part.

[0015] The quick-connect connector of this utility model also has the following features: the inner wall of the stepped sealing part is provided with a groove, and the outer wall of the annular retaining ring body is provided with several buckles that are adapted to the groove.

[0016] The quick-connector of this invention also has the following feature: the retaining ring is made of a soft material and has a pair of deformation openings.

[0017] The quick-connector of this utility model also has the following features: the retaining ring is symmetrically provided with two abutting bosses, two snap fasteners and two deformation openings, and the abutting bosses and snap fasteners are symmetrically distributed along the straight line formed by the two deformation openings.

[0018] The quick-connector of this utility model also has the following features: the female connector has a pipeline connection end for installing an external pipeline, which is in communication with the inner cavity of the plug end; the plug end is also provided with a plug portion for connecting the stepped sealing part, the inner diameter of which is adapted to the outer diameter of the insertion end.

[0019] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0020] 1. The male connector of this utility model is fixedly installed between the retaining ring and the locking part by the annular protrusion. When the pressing part of the locking part is pressed, the arc-shaped elastic part can deform towards the avoidance part and make the locking part disengage from the annular protrusion, thereby realizing the quick disassembly of the male connector. The quick connector has the advantages of simple structure and convenient installation.

[0021] 2. The quick-connect connector of this utility model is a detachable quick-connect connector. The axial length of the clearance groove of the female connector can be basically adapted to the conventional non-detachable safety ring on the market. It can be transformed into a non-detachable quick-connect connector simply by replacing the retaining ring and locking element with the safety ring, so as to meet the needs of different scenarios and save production costs.

[0022] 3. The upper end face of the outer limiting part of this utility model can abut against the upper end face of the relief groove. When the snap-fit ​​part of the locking part abuts against the annular protrusion of the snap-fit ​​part, the outer limiting part can play a certain supporting and axial limiting role, while increasing the strength of the arc-shaped elastic part and ensuring the service life of the arc-shaped elastic part.

[0023] 4. The retaining ring of this utility model has an annular retaining ring body and several abutting bosses. Several buckles adapted to the slots are provided on the outer wall of the annular retaining ring body, so that one end of the retaining ring is limited by the buckles and the other end is limited by the abutting bosses, thereby fixing the position of the retaining ring and the sealing ring on the female connector. When the male connector is disassembled, the retaining ring and the sealing ring are not easy to fall off. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of the detachable quick-connect connector of this utility model.

[0025] Figure 2 This is an exploded view of the detachable quick-connect connector of this utility model.

[0026] Figure 3 This is a cross-sectional view of the detachable quick-connect connector of this utility model.

[0027] Figure 4 yes Figure 3 Sectional view of the locking fastener at point AA.

[0028] Figure 5 yes Figure 3 A cross-sectional view of the part of BB that is against the boss.

[0029] Figure 6 This is a structural diagram of a non-removable quick-connect connector.

[0030] Figure 7 This is a cross-sectional view of a non-removable quick-connect connector.

[0031] Figure 8 This is an exploded view of a non-removable quick-connect connector.

[0032] The meaning of the labels in the diagram:

[0033] Male connector 1; Female connector 2; Sealing ring 3; Retaining ring 4; Locking fastener 5; Safety ring 6;

[0034] Insertion end 11; Annular protrusion 12;

[0035] Plug end 21; Locking mounting part 211; Step sealing part 212; Through port 213; Clearance part 214; Slot 215; Plug interface 216; Plug part 217; Pipe connection end 22;

[0036] 41. Annular retaining ring body; 42. Abutting boss; 43. Buckle; 44. Deformation opening;

[0037] Pressing part 51; Arc-shaped elastic part 52; Snap-fit ​​part 53; Outer limiting part 54;

[0038] Safety ring body 61; inner snap-fit ​​protrusion 62; outer snap-fit ​​protrusion 63; snap-fit ​​groove 64; deformation gap 65; sealing protrusion 66. Detailed Implementation

[0039] The present invention will be further described below with reference to specific embodiments:

[0040] like Figure 1 , 2 As shown, a quick-connect fitting includes a male connector 1, a female connector 2, a sealing ring 3, a retaining ring 4, and a locking element 5.

[0041] The male connector 1 has a hollow insertion end 11 and a pipe mounting end for installing an external pipe, the insertion end 11 being provided with an annular protrusion 12. In another embodiment, the pipe mounting end can be integrally formed on the corresponding external pipe.

[0042] The female connector 2 has a plug end 21 adapted to the insertion end 11 and a pipe connection end 22 for installing a corresponding external pipe. The pipe connection end 22 is in communication with the inner cavity of the plug end 21. In this embodiment, the outer side of the pipe connection end 22 is provided with several barbs, and the pipe connection end 22 and the insertion end 11 are distributed in a straight line to form a straight pipe. In another embodiment, the axes of the pipe connection end 22 and the insertion end 11 intersect or are perpendicular to each other, forming a bend at a certain angle.

[0043] like Figure 2 , 3As shown, the plug-in end 21 is provided with a locking mounting part 211, a stepped sealing part 212, and a plug-in part 217 in sequence from the outside to the inside. The end of the locking mounting part 211 is provided with a plug-in interface 216 that communicates with the inner cavity of the female connector 2. The left and right side walls of the locking mounting part 211 are each provided with a square through-hole 213 that communicates with the inner cavity of the female connector 2, and the front and rear side inner walls of the locking mounting part 211 are each provided with a clearance part 214. In this embodiment, the clearance part 214 is preferably a square clearance groove. The stepped sealing part 212 is stepped, with its upper end face flush with the lower surface of the through-hole 213 and the clearance groove and connected to the locking mounting part 211, and its lower end face forming a groove wall for installing the sealing ring 3 and connected to the plug-in part 217.

[0044] In this embodiment, the inner diameter of the insertion interface 216 is greater than the inner diameter of the stepped sealing portion 212, which is greater than the inner diameter of the insertion portion 217. The inner diameter of the insertion portion 217 is adapted to the outer diameter of the insertion end 11 of the male connector 1. At the same time, the inner diameter of the insertion interface 216 is greater than the outer diameter of the annular protrusion 12, which facilitates the insertion end 11 of the male connector 1 to extend into the insertion end 21 of the female connector 2.

[0045] A sealing ring 3 and a retaining ring 4 are sequentially installed on the stepped sealing portion 212. The sealing ring 3 is used to seal the gap between the insertion end 11 and the insertion end 21. The retaining ring 4 has an annular retaining ring body 41 and a plurality of abutting bosses 42 provided on the annular retaining ring body 41. The outer diameter of the annular retaining ring body 41 is adapted to the inner diameter of the stepped sealing portion 212, and together with the lower end face of the stepped sealing portion 212, forms a mounting groove for installing the sealing ring 3. The sealing ring 3 is fixed in the mounting groove. The abutting bosses 42 extend out of the outer side of the annular retaining ring body 41, with one end abutting against the upper end face of the stepped sealing portion 212 and the other end abutting against the annular protrusions 12.

[0046] like Figure 2 , 3 As shown, the locking member 5 has two pressing parts 51 located in the through opening 213, two arc-shaped elastic parts 52 disposed between the pressing parts 51, and a snap-fit ​​part 53 disposed on the arc-shaped elastic parts 52.

[0047] Specifically, the pressing part 51 is square plate-shaped and matches the shape of the through opening 213. The upper inner sides of the two pressing parts 51 extend and are symmetrically provided with arc-shaped elastic parts 52, forming an inner cavity through which the male connector 1 can pass. The bottom of each arc-shaped elastic part 52 is inclined inward and provided with a snap-fit ​​part 53. An opening with a larger upper part and a smaller lower part is formed between the two snap-fit ​​parts 53. In the natural state, the minimum distance between the lower ends of the opening is less than the outer diameter of the annular protrusion 12.

[0048] During installation, first, place the sealing ring 3 and the retaining ring 4 into the stepped sealing part 212 of the female connector 2. Then, insert the locking member 5 radially into the locking mounting part 211 of the female connector 2 through the through-hole 213. At this time, the pressing part 51 or part of the arc-shaped elastic part 52 is located in the through-hole 213, and the through-hole 213 has an axial limiting effect on the locking member 5. Finally, insert the insertion end 11 of the male connector 1 into the insertion part 217 in sequence along the insertion interface 216, the locking member 5, the retaining ring 4, and the sealing ring 3. When the annular protrusion 12 is limited between the abutting protrusion 42 of the retaining ring 4 and the snap-fit ​​part 53 of the locking member 5, the male connector 1 and the female connector 2 are inserted. When the pressing part 51 of the locking member 5 is pressed, the arc-shaped elastic part 52 can deform toward the relief part 214 and cause the snap-fit ​​part 53 to disengage from the annular protrusion 12, thereby realizing the disassembly of the male connector 1.

[0049] This embodiment further includes, for example, Figure 4 As shown, an outer limiting part 54 extends from the outer side of the arc-shaped elastic part 52. The outer limiting part 54 is located in the relief groove and is used to limit the position of the locking member 5.

[0050] Specifically, the outer limiting part 54 is a strip-shaped protrusion located within the clearance groove and forming a certain gap with the inner wall of the clearance groove. When the pressing part 51 is pressed, the arc-shaped elastic part 52 has enough space to deform toward the clearance part 214. In addition, the length of the strip-shaped protrusion is slightly less than the width of the clearance groove. When the locking member 5 is radially inserted into the locking mounting part 211 of the female connector 2 through the through-hole 213, the strip-shaped protrusion has a certain radial limiting effect.

[0051] Preferably, the pressing part 51, the arc-shaped elastic part 52, the snap-fit ​​part 53, and the outer limiting part 54 are all integrally molded from plastic or rubber, and the upper end faces of the pressing part 51, the arc-shaped elastic part 52, and the outer limiting part 54 are flush (i.e., located on the same plane). At the same time, the upper end face of the through opening 213 and the upper end face of the relief groove are flush. When the locking member 5 is installed into the locking mounting part 211, the upper end face of the outer limiting part 54 can abut against the upper end face of the relief groove. When the snap-fit ​​part 53 of the locking member 5 abuts against the annular protrusion 12 of the snap-fit ​​part 53, the outer limiting part 54 can play a certain supporting and axial limiting role, while increasing the strength of the arc-shaped elastic part 52 and ensuring the service life of the arc-shaped elastic part 52.

[0052] like Figure 3 As shown, in this embodiment, the sum of the axial lengths of the abutment boss 42, the annular protrusion 12, and the locking member 5 is adapted to the axial length of the clearance portion 214 (i.e., the mounting groove), thereby effectively fixing the male connector 1 and the female connector 2. Generally, the axial lengths of the locking member 5 and the annular protrusion 12 are fixed, while the axial length of the abutment boss 42 needs to be designed based on the axial length of the clearance portion 214 (i.e., the mounting groove).

[0053] Preferably, the inner wall of the stepped sealing part 212 is provided with a groove 215, and the outer wall of the annular retaining ring body 41 is provided with a plurality of buckles 43 that are adapted to the groove 215, so that one end of the retaining ring 4 is limited by the buckle 43 and the other end is limited by abutting against the boss 42, thereby fixing the position of the retaining ring 4 and the sealing ring 3 on the female connector 2. When the male connector 1 is disassembled, the retaining ring 4 and the sealing ring 3 are not easy to fall off. In addition, the number of grooves 215 is one or more. When there is one groove 215, it is an annular groove and is not affected by the number and circumferential position of the buckles 43; when there are multiple grooves 215, the number and position correspond one-to-one with the buckles 43.

[0054] In addition, the retaining ring 4 is made of soft materials such as plastic and rubber, and has a pair of deformable openings 44, which facilitates the insertion of the retaining ring 4 into the insertion interface 216 after bending. In this embodiment, the retaining ring 4 is symmetrically provided with two abutting bosses 42, two buckles 43, and two deformable openings 44. The abutting bosses 42 and the buckles 43 are symmetrically distributed along the straight line formed by the two deformable openings 44.

[0055] In this embodiment, the axial length of the clearance groove is 8-12mm, preferably 10-11.5mm. The quick-connect connector in this embodiment is a detachable quick-connect connector. The axial length of the clearance groove can be basically adapted to the conventional non-detachable safety ring 6 on the market. That is, it can be transformed into a non-detachable quick-connect connector simply by replacing the retaining ring 4 and the locking element 5 with the safety ring 6 to meet the needs of different scenarios.

[0056] like Figure 6-8 As shown, the non-removable quick-connect fitting includes a male connector, a female connector, a sealing ring, and a safety ring 6.

[0057] The male connector, female connector, and sealing ring of this non-removable quick-connect fitting are interchangeable with the male connector 1, female connector 2, and sealing ring 3 of the aforementioned removable quick-connect fitting.

[0058] The safety ring 6 includes an annular safety ring body 61. The outer diameter of the safety ring body 61 is adapted to the inner diameter of the insertion interface 216 and is larger than the inner diameter of the stepped sealing part 212. Installation windows are respectively provided on the front and rear side walls of the safety ring body 61. An inner snap-fit ​​protrusion 62 is provided on the inner side of the upper end of the installation window, inclined inwards. A snap-fit ​​groove 64 for installing the annular protrusion 12 is formed between the inner snap-fit ​​protrusion 62 and the lower end of the installation window. An outer side of the upper end of the installation window protrudes outwards to form a groove for installing the annular protrusion 12. The outer snap-fit ​​protrusion 63 snaps onto the upper end face of the clearance groove. After installation, the upper end of the safety ring body 61 can be snapped into the clearance groove through the outer snap-fit ​​protrusion 63. The lower end of the safety ring body 61 is formed with a sealing protrusion 66 for abutting the sealing ring 3. The sealing protrusion 66 extends into the stepped sealing part 212 of the female connector 2, so that the safety ring body 61 can abut against the upper end face of the stepped sealing part 212, thereby fixing the safety ring 6 into the locking mounting part 211 of the female connector 2.

[0059] During installation, first install the safety ring 6 into the female connector 2 through the insertion interface 216, and then insert the insertion end 11 of the male connector 1 into the insertion part 217 in sequence along the insertion interface 216, the safety ring 6, and the sealing ring 3. When the annular protrusion 12 is limited in the snap-fit ​​groove 64, the male connector 1 and the female connector 2 are connected.

[0060] Preferably, deformation gaps 65 are respectively provided on the left and right side walls of the safety ring body 61. The upper end of the deformation gap 65 is open and the lower end is closed. The inner locking protrusion 62 and the outer locking protrusion 63 are symmetrically arranged on both sides of the center line formed by the two deformation gaps 65.

[0061] Because the dimensions of the female connectors of commercially available detachable quick-connect couplings cannot meet the installation requirements of safety ring 6, the female connectors of both types of quick-connect couplings need to be molded and injection molded separately. This embodiment achieves universality of female connector 2 by changing the size of the clearance groove, thereby reducing mold opening costs.

[0062] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A quick-connect connector, characterized in that, include: The male connector (1) has a hollow insertion end (11) on which an annular protrusion (12) is provided; The female connector (2) has a plug-in end (21) adapted to the insertion end (11). The plug-in end (21) is provided with a locking mounting part (211) and a stepped sealing part (212) in sequence. The left and right side walls of the locking mounting part (211) are provided with through openings (213), and the front and rear side inner walls are provided with clearance parts (214). The axial length of the clearance parts (214) is 8-12mm. A sealing ring (3) is installed inside the stepped sealing part (212) to seal the gap between the insertion end (11) and the plug end (21); The retaining ring (4) is installed inside the stepped sealing part (212) and together with the stepped sealing part (212) forms a mounting groove for installing the sealing ring (3); The locking member (5) has two pressing parts (51) located in the through opening (213), two arc-shaped elastic parts (52) disposed between the pressing parts (51), and a snap-fit ​​part (53) disposed on the arc-shaped elastic parts (52); When the male connector (1) is inserted, the annular protrusion (12) can be limited between the retaining ring (4) and the snap-fit ​​part (53); When the pressing part (51) of the locking member (5) is pressed, the arc-shaped elastic part (52) can deform toward the avoidance part (214) and cause the snap-fit ​​part (53) to disengage from the annular protrusion (12), thereby realizing the disassembly of the male connector (1).

2. A quick-connect connector according to claim 1, characterized in that: The clearance part (214) is a clearance groove; An outer limiting part (54) extends outward from the outer side of the arc-shaped elastic part (52). The outer limiting part (54) is located in the clearance groove and is used to limit the position of the locking member (5).

3. A quick-connect connector according to claim 2, characterized in that: The upper surfaces of the pressing part (51), the arc-shaped elastic part (52), and the outer limiting part (54) are flush. The upper end face of the through opening (213) is flush with the upper end face of the relief groove, and the upper end face of the outer limiting part (54) can abut against the upper end face of the relief groove.

4. A quick-connect connector according to claim 2 or 3, characterized in that: The axial length of the clearance groove is 10-11.5 mm.

5. A quick-connect connector according to claim 1, characterized in that: The retaining ring (4) has an annular retaining ring body (41) and a plurality of abutting protrusions (42) disposed on the annular retaining ring body (41). One end of the abutting protrusion (42) abuts against the end face of the stepped sealing part (212) and the other end abuts against the annular protrusion (12).

6. A quick-connect connector according to claim 5, characterized in that: The sum of the axial lengths of the abutment boss (42), the annular protrusion (12), and the locking member (5) is adapted to the axial length of the clearance part (214).

7. A quick-connect connector according to claim 5, characterized in that: The inner wall of the stepped sealing part (212) is provided with a slot (215), and the outer wall of the annular retaining ring body (41) is provided with a plurality of buckles (43) that are adapted to the slot (215).

8. A quick-connect coupling according to any one of claims 5-7, characterized in that: The retaining ring (4) is made of soft material and has a pair of deformable openings (44).

9. A quick-connect connector according to claim 8, characterized in that: The retaining ring (4) is symmetrically provided with two abutting bosses (42), two buckles (43) and two deformation openings (44). The abutting bosses (42) and buckles (43) are symmetrically distributed along the straight line formed by the two deformation openings (44).

10. A quick-connect connector according to claim 1, characterized in that: The female connector (2) also has a pipe connection end (22) for installing an external pipe, which is in communication with the inner cavity of the plug end (21); The insertion end (21) is also provided with an insertion part (217) that connects to the stepped sealing part (212), the inner diameter of which is adapted to the outer diameter of the insertion end (11).

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