Snap-on hose coupling

Abstract

The utility model relates to a kind of buckle type water pipe quick connection, aiming at solving the technical problem that the claw head of the claw ring in the existing similar product is difficult to quickly separate and quickly disassemble with the outer diameter of internal pipe fitting, and it is difficult to be used for the quick disassembly of different pipe diameters.The quick connection seat of the water pipe quick connection is connected with quick connection sleeve through middle section sleeve, and the outer diameter of the sleeve opening of quick connection sleeve is provided with a tightening sleeve;The key point is that the inner sleeve opening of the middle protrusion of quick connection seat is provided with a lower buckle rib, the bottom ring opening of claw ring is fixedly arranged on the upper step edge of middle section sleeve through quick connection sleeve, the claw head of claw ring is extended to the inside of the top opening of quick connection seat, and a rubber ring and a sealing ring are sequentially arranged in the quick connection sleeve above the claw ring;The outer diameter of middle section sleeve is symmetrically provided with a slanted chute that is lifted from bottom to top, the bottom side of slanted chute is provided with an open inlet, the other side of slanted chute is provided with a horizontal groove, and the positioning column at the knob block of quick connection seat is respectively screwed into the slanted chute of middle section sleeve through the inlet of middle section sleeve.

Description

Technical Field

[0001] This utility model relates to a quick connector, specifically a snap-fit ​​water pipe quick connector. Background Technology

[0002] Quick-connect couplings are connectors that allow for the connection or disconnection of pipelines without the need for tools. They are classified into gas quick-connect couplings and liquid quick-connect couplings based on their application. Some existing water pipe quick-connect couplings incorporate a butterfly-shaped elastic spring or claw structure, and a knob-operated quick-lock mechanism; for example, Chinese patent application number 201821735687.3, authorized on November 1, 2019, entitled "A Quick-Connect Flexible Band Bypass for Agricultural Water-Saving Irrigation Equipment," includes a double-connected plastic body. A flexible band mounting angle is assembled in the insertion end on one side of the double-connected plastic body, and a sealing accessory is assembled in the insertion end on the other side. The flexible band mounting angle includes a flexible band threaded tube threaded into one insertion end, a flexible band connecting tube integrally connected to the threaded tube, and a flexible band handle integrally connected below the connecting tube. However, while the aforementioned products and similar products have a locking mechanism on one end, the other end lacks a quick-disassembly design that allows the internal locking ring to open outwards when the knob is retracted inwards, thus separating the pipe from its outer diameter and allowing the pipe to be pulled out. This makes it particularly difficult to use for quick assembly and disassembly of pipes of different diameters. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a snap-fit ​​quick-connect water pipe mainly used for rubber-coated water pipes, thereby solving the problem of suboptimal quick-disassembly structure design in existing similar products, which makes it difficult for the internal clip ring to quickly detach from the outer diameter of the internal pipe fitting, especially making it difficult to use for quick assembly and disassembly of different pipe diameters. This objective is achieved through the following technical solution.

[0004] A snap-fit ​​water pipe quick connector includes a quick connector seat connected to a quick connector sleeve via a middle section sleeve. The outer diameter of the quick connector sleeve opening is provided with a tightening sleeve. The middle section sleeve contains a claw ring, a rubber ring, and a sealing ring. The bottom surface of the chamber between the inner and outer diameters of the middle section sleeve has equidistantly arranged arc-shaped through holes. The key structural design feature is that the outer diameter of the top opening of the inner sleeve opening of the quick connector seat has a lower snap-fit ​​rib. Symmetrical notches are provided on both sides of the top opening of the quick connector seat at the lower snap-fit ​​rib. The outer diameter of the quick connector seat at the lower snap-fit ​​rib is snapped and fixed to the lower stepped edge of the bottom opening of the middle section sleeve. Above the lower stepped edge, the inner diameter of the middle section sleeve has an upper stepped edge with a diameter larger than the lower stepped edge. The bottom of the claw ring... The outer ring is fixed to the upper step edge of the middle section sleeve via a quick-connect sleeve. The claw heads, evenly spaced within the inner diameter of the claw ring, extend towards the inner side of the top opening of the quick-connect seat. A rubber ring and a sealing ring are sequentially arranged inside the quick-connect sleeve above the claw ring. The upper snap rib on the outer diameter of the bottom opening of the quick-connect sleeve is fastened and fixed together with the fixing rib on the inner diameter of the top opening of the middle section sleeve. At the same time, the rubber ring and the sealing ring inside the middle section sleeve above the claw ring are sequentially fixed to the inner diameter of the quick-connect sleeve at the connection between the middle section sleeve and the quick-connect sleeve. The gap between the upper step edge of the middle section sleeve and the inside of the fixing rib is the cavity. The inner diameter of the rubber ring is higher than the inner diameter of the sealing ring and the inner diameter of the inner opening of the quick-connect seat. The inner diameter of the sealing ring is higher than the inner diameter of the quick-connect sleeve. Thus, the fitting inserted into one side of the quick-connect fitting is stopped by the quick-connect fitting at one end face of the internal rubber ring, and the claw head of the claw ring locks the outer diameter of the internal fitting, preventing the fitting from being pulled out; another fitting inserted into the other side is inserted into the quick-connect sleeve through a tightening sleeve, and is stopped at the other end face of the internal rubber ring that is higher than the sealing ring. Rotating to lock the tightening sleeve, the other fitting is fixed to the quick-connect sleeve and the tightening sleeve. The fitting at one end of the quick-connect fitting can be removed by pushing the quick-connect fitting inward, or by rotating the quick-connect fitting inward.

[0005] The outer diameter of the middle section sleeve is symmetrically provided with inclined grooves that rise from the bottom to the top. One side of the bottom of the inclined groove has an open inlet, and the other side has a horizontal groove. Symmetrically arranged knob blocks are located on both sides of the outer diameter of the raised inner sleeve opening in the middle of the quick-connect seat. The tops of the knob blocks are respectively higher than the bottom outer diameter of the quick-connect seat, and positioning pins are respectively located on the inner side of the top of the knob blocks. The positioning pins at the knob blocks of the quick-connect seat are screwed into the inclined groove of the middle section sleeve through the inlet of the middle section sleeve. The stroke height of the inclined groove is between the bottom sleeve opening of the middle section sleeve and the ring surface of the lower quick-connect seat. Rotating the quick-connect seat causes the internal orifice of the quick-connect seat to push the claw head of the retaining ring outwards, disengaging the claw head of the retaining ring from the outer diameter of the internal pipe fitting at that end, allowing the pipe fitting at that end to be pulled out. The other pipe fitting at the other end is pulled out by loosening the tightening sleeve.

[0006] The inner diameter of one end of the quick-connect fitting is larger than the inner diameter of the sleeve at the other end of the quick-connect sleeve. Thus, a pipe fitting with a diameter of 23mm is fitted onto one side of the quick-connect fitting, while another pipe fitting with a diameter less than 19mm is fitted onto the other side, meaning the diameter of the rubber ring is 19mm.

[0007] The inner wall below the fixing rib of the middle sleeve is provided with an inner arc rib that is offset from the arc-shaped fixing rib on the upper inner wall. The outer diameter of the claw ring is limited to the gap groove between the inner arc rib and the upper step edge. The above structure facilitates the fixing of the claw ring between the quick-connect sleeve and the middle sleeve.

[0008] The fixing ribs on the inner wall of the middle section sleeve are fitted into the opening edge of the quick-connect sleeve. The upper snap ribs of the quick-connect sleeve are fastened and fixed to the fixing ribs of the middle section sleeve. The opening edges are equidistantly arranged at the bottom openings of the upper snap ribs of the quick-connect sleeve. The above is a specific structural embodiment in which the middle section sleeve and the quick-connect sleeve are connected and fixed as a whole.

[0009] The inner diameter of the rubber ring tapers from the claw ring to the sealing ring, forming a cone shape. The above is a specific structural embodiment of a rubber ring; other existing rubber ring structures that satisfy the sealing and stopping functions of the aforementioned two-sided pipe fittings can also be used.

[0010] The outer diameter of the quick-connect sleeve is tapered and protrudes from the middle sleeve to the tightening sleeve.

[0011] This utility model has a reasonable structural design, is easy to produce and use, has good stability and sealing performance, and is simple to disassemble; it is suitable for use as a quick-connect fitting for snap-on water pipes and a structural improvement of similar products. Attached Figure Description

[0012] Figure 1 This is an exploded structural diagram of an embodiment of this utility model.

[0013] Figure 2 yes Figure 1 A schematic diagram of the bottom structure in the exploded state.

[0014] Figure 3 yes Figure 1 A schematic diagram of the assembled three-dimensional structure.

[0015] Figure 4 yes Figure 3 A cross-sectional structural diagram.

[0016] Attached figures and their names: 1. Quick-connect seat, 101. Lower snap rib, 102. Notch groove, 103. Knob block, 1031. Positioning post, 2. Middle section sleeve, 201. Lower step edge, 202. Upper step edge, 203. Inner arc rib, 204. Fixing rib, 205. Slanted slide groove, 3. Claw ring, 4. Rubber ring, 5. Sealing ring, 6. Quick-connect sleeve, 601. Upper snap rib, 602. Orifice edge, 7. Tightening sleeve. Detailed Implementation

[0017] The structure of this utility model will now be further described with reference to the accompanying drawings. For example... Figures 1-4As shown, the quick-connect seat 1 of the water pipe quick connector is connected to the quick-connect sleeve 6 through the middle sleeve 2. The outer diameter of the quick-connect sleeve opening is provided with a tightening sleeve 7. The middle sleeve is provided with a claw ring 3, a rubber ring 4, and a sealing ring 5. The bottom ring surface of the chamber between the inner diameter and the outer diameter of the middle sleeve is provided with equidistant arc-shaped through holes. The outer diameter of the top opening of the inner sleeve opening of the quick connector protruding in the middle is provided with a lower snap rib 101. The top opening of the quick connector at the lower snap rib is provided with symmetrical notches 102 on both sides of the top opening of the quick connector. The outer diameter of the quick connector at the lower snap rib is fastened and fixed to the lower step edge 201 at the bottom opening inner diameter of the middle sleeve. The inner diameter of the middle sleeve above the lower step edge is provided with an upper step edge with a diameter larger than the lower step edge. 202. The bottom opening of the claw ring is fixed to the upper step edge of the middle section sleeve through the quick-connect sleeve. The claw heads, which are equidistant from the inner diameter of the claw ring, extend to the inner side of the top opening of the quick-connect seat. The upper snap rib 601 of the outer diameter of the bottom opening of the quick-connect sleeve is fastened and fixed together with the fixing rib 204 of the inner diameter of the top opening of the middle section sleeve. At the same time, the rubber ring and the sealing ring inside the middle section sleeve above the claw ring are sequentially fixed to the inner diameter of the quick-connect sleeve at the connection between the middle section sleeve and the quick-connect sleeve. The gap between the upper step edge of the middle section sleeve and the inside of the fixing rib is the cavity. The inner diameter of the rubber ring is higher than the inner diameter of the sealing ring and the inner diameter of the inner opening of the quick-connect seat. The inner diameter of the sealing ring is higher than the inner diameter of the quick-connect sleeve. The outer diameter of the middle section sleeve is symmetrically provided with inclined sliding grooves 205 that rise from the bottom to the top. One side of the bottom of the inclined sliding groove is provided with an inlet, and the other side of the inclined sliding groove is provided with a horizontal groove. The outer diameter of the inner sleeve opening protruding in the middle of the quick connector is symmetrically provided with knob blocks 103 on both sides. The top of the knob blocks is higher than the bottom outer diameter of the quick connector. The inner side of the top of the knob blocks is provided with positioning pins 1031. The positioning pins at the knob blocks of the quick connector are screwed into the inclined sliding groove of the middle section sleeve through the inlet of the middle section sleeve. The stroke height of the inclined sliding groove is provided between the bottom sleeve opening of the middle section sleeve and the ring surface of the lower quick connector.

[0018] The inner wall below the fixing rib of the aforementioned middle section sleeve is provided with an inner arc rib 203, which is offset from the arc-shaped fixing rib on the upper inner wall. The outer diameter of the claw ring is limited to the gap groove between the inner arc rib and the upper step edge. The fixing rib on the inner wall of the middle section sleeve is fitted into the orifice edge 602 of the quick-connect sleeve. The upper snap rib of the quick-connect sleeve is fastened and fixed to the fixing rib of the middle section sleeve. The orifice edge is equidistantly arranged at the bottom orifice of the upper snap rib of the quick-connect sleeve. The inner diameter of the rubber ring tapers from the claw ring to the sealing ring, forming a cone shape; the outer diameter of the quick-connect sleeve protrudes in a cone shape from the middle section sleeve to the tightening sleeve. Figure 4 As shown, the inner diameter of one end of the quick connector is larger than the inner diameter of the sleeve at the other end of the quick connector, i.e., the difference in distance on one side is d.

[0019] In use, the fitting inserted on one side of the quick-connect fitting is stopped by the inner rubber ring on one end face of the quick-connect fitting. The claw head of the retaining ring locks the outer diameter of the inner fitting, preventing it from being pulled out. The other fitting inserted on the other side is inserted into the quick-connect sleeve via a tightening sleeve, and is stopped by the inner rubber ring on the other end face, which is higher than the sealing ring. Tightening the tightening sleeve fixes the other fitting to the quick-connect sleeve and the tightening sleeve. Next, rotating the quick-connect fitting causes the inner orifice of the quick-connect fitting to push the claw head of the retaining ring outwards, disengaging the claw head from the outer diameter of the inner fitting at that end, allowing the fitting at that end to be pulled out. The other fitting at the other end is pulled out by loosening the tightening sleeve.

Claims

1. A snap-fit ​​water pipe quick connector, wherein the quick connector seat (1) is connected to the quick connector sleeve (6) via a middle section sleeve (2), the outer diameter of the quick connector sleeve is provided with a tightening sleeve (7), the middle section sleeve is provided with a claw ring (3), a rubber ring (4), and a sealing ring (5), and the bottom surface of the cavity between the inner diameter and the outer diameter of the middle section sleeve is provided with equidistant arc-shaped through holes; characterized in that The quick-connector (1) has a lower snap rib (101) on the outer diameter of the top hole of the inner sleeve protruding in the middle. The quick-connector has symmetrical notches (102) on both sides of the top hole of the quick-connector at the lower snap rib. The outer diameter of the quick-connector at the lower snap rib is fastened and fixed to the lower step edge (201) at the bottom hole of the middle sleeve (2). The inner diameter of the middle sleeve above the lower step edge has an upper step edge (202) with a diameter larger than the lower step edge. The bottom ring of the claw ring (3) is fixed to the upper step edge of the middle sleeve through the quick-connector (6). The inner diameter of the claw ring is equidistantly arranged. The claw head extends into the inner side of the top opening of the quick-connect seat. The upper snap rib (601) of the outer diameter of the bottom opening of the quick-connect sleeve and the fixing rib (204) of the inner diameter of the top opening of the middle section sleeve are fastened and fixed together. At the same time, the rubber ring (4) and the sealing ring (5) inside the middle section sleeve above the claw ring are fixed in sequence to the inner diameter of the quick-connect sleeve at the connection between the middle section sleeve and the quick-connect sleeve. The gap between the upper step edge of the middle section sleeve and the inside of the fixing rib is the cavity. The inner diameter of the rubber ring is higher than the inner diameter of the sealing ring and the inner diameter of the inner opening of the quick-connect seat. The inner diameter of the sealing ring is higher than the inner diameter of the quick-connect sleeve.

2. The snap-fit ​​water pipe quick connector according to claim 1, characterized in that... The outer diameter of the middle sleeve (2) is symmetrically provided with inclined grooves (205) that rise from the bottom to the top. The bottom side of the inclined groove is provided with an inlet port, and the other side of the inclined groove is provided with a horizontal groove. The inner sleeve opening of the quick connector (1) is symmetrically provided with knob blocks (103) on both sides of the outer diameter. The top of the knob blocks is higher than the bottom outer diameter of the quick connector. The inner side of the top of the knob blocks is provided with positioning pins (1031). The positioning pins at the knob blocks of the quick connector are screwed into the inclined groove of the middle sleeve through the inlet of the middle sleeve. The stroke height of the inclined groove is provided between the bottom sleeve opening of the middle sleeve and the ring surface of the lower quick connector.

3. The snap-fit ​​water pipe quick connector according to claim 2, characterized in that... The inner diameter of one end of the quick connector (1) is larger than the inner diameter of the sleeve at one end of the quick connector (6).

4. The snap-fit ​​water pipe quick connector according to claim 1, characterized in that... The inner wall below the fixing rib (204) of the middle sleeve (2) is provided with an inner arc rib (203) that is offset from the arc-shaped fixing rib at the upper inner wall. The outer diameter of the claw ring (3) is limited to the gap groove between the inner arc rib and the upper step edge (202).

5. The snap-fit ​​water pipe quick connector according to claim 4, characterized in that... The fixing rib (204) on the inner wall of the middle sleeve (2) is fitted into the hole edge (602) of the quick-connect sleeve (6), and the upper buckle rib (601) of the quick-connect sleeve is fastened and fixed to the fixing rib of the middle sleeve. The hole edge is equidistantly set at the bottom hole of the upper buckle rib of the quick-connect sleeve.

6. The snap-fit ​​water pipe quick connector according to claim 1, characterized in that... The inner diameter of the rubber ring (4) decreases from the claw ring (3) to the sealing ring (5) and becomes conical.

7. The snap-fit ​​water pipe quick connector according to claim 1, characterized in that... The outer diameter of the quick-connect sleeve (6) protrudes in a conical shape from the middle sleeve (2) to the tightening sleeve (7).

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