TWI827256B - Pipe fitting with push-fit ring - Google Patents

Abstract

The present invention provides a pipe fitting with push-fit ring, comprising a main body, a stop ring and a push-fit ring, wherein the main body is mainly composed of an outer tube made of plastic material sleeved with an inner tube made of metal material. The main body has a first end and a second end, the first end is used to connect a water pipe, and the second end is used to connect a fluid device. Water enters the main body through the first end and leaves the main body through the second end. One end of the outer tube forms the first end, one end of the inner tube forms the second end, the main body forms an annular abutment surface facing the second end, the axial end of the stop ring abuts the abutment surface, the push-fit ring is arranged inside the outer tube, and the push-fit ring and the abutment surface press the stop ring against each other to prevent water from penetrating between the outer tube and the inner tube.

Description

Pipe joint structure with push ring

The present invention relates to a pipeline assembly, and in particular to an innovative structural type revealer of a pipe joint structure with a push ring.

A conventional pipe joint used to connect pipelines and fluid devices includes an outer pipe and an inner pipe. The outer pipe is made of a plastic material and is used to connect a water pipe that provides water flow. The inner pipe is made of a metal material. The inner pipe is arranged inside the outer pipe, and the inner wall of the inner pipe forms a threaded section to provide the fluid device with a screw-lock connection to the inner pipe, whereby water passes from the water pipe through one end of the outer pipe. Enter the outer tube, and then enter the fluid device through the inner tube; the fluid device may be a faucet, but is not limited to only a faucet.

The outer pipe made of plastic material is easy to fit and connect to the water pipe, and the inner pipe made of metal material is easy to process to form the threaded section.

According to the investigation, it was found in practical application experience that this conventional structure still has the following problems and disadvantages: different materials are selected to form the outer tube and the inner tube, making it difficult to form a watertight connection between the outer tube and the inner tube. Water from the water pipe easily penetrates into between the outer pipe and the inner pipe due to water pressure, and leaks out from one end of the pipe joint connected to the fluid device.

The main purpose of the present invention is to provide a pipe joint structure with a push ring. The technical problem it aims to solve is to make innovative breakthroughs with the goal of developing a new type of pipe joint that is more ideal and practical.

Based on the aforementioned objectives, the technical features of the present invention to solve the problem mainly lie in the structure of the pipe joint with a push ring, including:

A main body, which is mainly composed of an outer tube connected to an inner tube. The outer tube is a tubular structure made of plastic material. The inner tube is a tubular structure made of metal material. The main body has a first end and a The second end is used to connect a water pipe, and the second end is used to connect a fluid device, so that water enters the main body through the first end and leaves the main body through the second end and enters the fluid device. , one end of the outer tube forms the first end, one end of the inner tube forms the second end, the inner tube forms a threaded section, the threaded section is used to screw-lock the fluid device, the outer tube has an inner tube Wall, the inner tube has an outer tube wall, an annular abutment surface is formed between the inner tube wall and the outer tube wall, and the abutment surface faces the first end;

An elastic anti-leakage ring is provided inside the outer tube. One axial end of the anti-leakage ring abuts the abutment surface, and the radial annular outer edge of the anti-leakage ring is tightly against the inner tube wall. The radially upward annular inner edge of the leakage ring is pressed against the outer pipe wall to prevent water from penetrating into between the outer pipe and the inner pipe; and

A push ring is disposed inside the outer tube. The push ring and the abutment surface relatively press the anti-leak ring along the axial direction of the anti-leak ring, so that the anti-leak ring elastically presses against the inner tube. wall and the outer tube wall.

The main effect and advantage of the present invention is that the push ring and the abutment surface can be used to relatively press the anti-leakage ring, forcing the elastic anti-leakage ring to elastically deform, so that the annular outer edge can be tightly pressed against the inner tube wall, the annular inner edge can be pressed against the outer pipe wall, and the water entering the outer pipe through the water pipe cannot penetrate into the space between the outer pipe and the inner pipe, so as to prevent water from penetrating into the outer pipe made of a combination of heterogeneous materials. between the outer tube and the inner tube to prevent external leakage.

Please refer to FIGS. 1 to 7 , which are embodiments of the pipe joint structure with a push ring according to the present invention. However, these embodiments are for illustration only and are not limited by this structure in patent applications.

As shown in Figures 1 to 3, the first embodiment of the pipe joint structure with a push ring includes a main body 10, an anti-leakage ring 20 and a push ring 30, wherein the main body 10 is mainly composed of an outer tube 11 is formed by being sleeved with an inner tube 12. The outer tube 11 is a tubular structure made of plastic material. The inner tube 12 is a tubular structure made of metal material. The main body 10 has a first end 13 and a second end 14. , the first end 13 is used to connect a water pipe 90, and the second end 14 is used to connect a fluid device (not shown), so that water enters the main body 10 through the first end 13 and flows through the second end. The end 14 leaves the main body 10 and enters the fluid device. One end of the outer tube 11 forms the first end 13. One end of the inner tube 12 forms the second end 14. The inner tube 12 forms a threaded section 15. The threaded section 15 is used to screw-lock the fluid device. The outer tube 11 has an inner tube wall 112. The inner tube 12 has an outer tube wall 122. An annular ring is formed between the inner tube wall 112 and the outer tube wall 122. The resisting surface 16 faces the first end 13 .

The anti-leakage ring 20 is disposed inside the outer tube 11 . One axial end of the anti-leakage ring 20 abuts the abutment surface 16 , and the radial annular outer edge 22 of the anti-leakage ring 20 is tightly against the inner tube wall. 112. The annular inner edge 24 in the radial direction of the anti-leakage ring 20 is tightly against the outer tube wall 122, preventing water from penetrating into between the outer tube 11 and the inner tube 12.

The push ring 30 is disposed inside the outer tube 11 . The push ring 30 and the abutment surface 16 relatively press the anti-leakage ring 20 along the axial direction of the anti-leakage ring 20 . Accordingly, the anti-leakage ring 20 is 20 is elastically pressed against the inner tube wall 112 and the outer tube wall 122 .

With the above structural composition and technical features, the operating conditions of the present invention are described as follows: As shown in Figures 2 and 3, the push ring 30 and the abutment surface 16 relatively press the anti-leakage ring 20 , since one axial end of the anti-leakage ring 20 abuts against the abutment surface 16 , the elastic anti-leakage ring 20 is forced to elastically deform, and the annular outer edge 22 is pressed against the inner tube wall 112 , and the annular inner edge 24 The anti-leak ring 20 can be tightly against the outer pipe wall 122 , and the connection between the outer pipe 11 and the inner pipe 12 faces the water pipe 90 . The anti-leak ring 20 forms effective compression and shielding, and the leakage prevention ring 20 can enter the outer pipe through the water pipe 90 11 water cannot penetrate into the space between the outer tube 11 and the inner tube 12. When water passes through the main body 10, water is prevented from penetrating into the space between the outer tube 11 and the inner tube 12, which is composed of a combination of heterogeneous materials, thereby preventing external leakage. leakage.

Furthermore, when the outer pipe 11 is glued to the water pipe 90 , the radial outer circumference of the water pipe 90 and the radial inner circumference of the outer pipe 11 are respectively coated with glue, and then the water pipe 90 is inserted through the first end 13 Since the annular outer edge 22 of the outer tube 11 is tightly against the inner tube wall 112, the pushing ring 30 blocks the glue from penetrating toward the anti-leakage ring 20, thereby preventing the outer tube 11 from being affected by the anti-leakage ring 20. The contact area of the ring 20 is corroded by the glue, which affects the water-stopping effect.

The push ring 30 and the outer tube 11 form a tight fitting relationship with each other in the radial direction. The push ring 30 and the outer tube 11 can also choose a loose fitting relationship and use gluing to join the inner tube wall. 112 and the push ring 30, thus forming different alternative embodiments.

In this example, the abutment surface 16 is formed by the outer tube 11 and the inner tube 12 .

The push ring 30 forms an annular flow-bearing surface 32 on the side facing the first end 13 . The flow-bearing surface 32 bears the pressure formed by the water flowing to the inner pipe 12 . Accordingly, the water flow from the water pipe 90 When water enters the outer tube 11 and flows into the inner tube 12 , the water pressure acting on the flow-bearing surface 32 forms a thrust force on the push ring 30 toward the anti-leakage ring 20 , so that the anti-leakage ring 20 can The effective anti-leakage effect is maintained, and the reliability of the push ring 30 against the anti-leakage ring 20 is improved.

As shown in Figures 4 and 5, the second embodiment is mainly different from the first embodiment in that the annular inner edge of the push ring 30 is radially reduced to form a convex portion 34. The formation of the convex portion 34 can expand the The push ring 30 is an area that bears the water pressure flowing to the inner tube 12 . In this example, the protrusion 34 is selected to abut the end surface 17 of the inner tube 12 facing the second end 14 .

As shown in Figure 6, the third embodiment is mainly different from the first embodiment in that the push ring 30 is screwed to the inner tube 12, and the inner tube 12 is screwed to the push ring 30, which is located in the inner tube. 12 small diameter, avoid scratching the anti-leak ring 20 when assembling the anti-leak ring 20.

As shown in FIG. 7 , the fourth embodiment is mainly different from the first embodiment in that the push ring 30 has a plurality of protrusions 36 formed on the radial outer circumference along the axial direction, and each of the protrusions 36 is in close contact with the inner tube wall. 112.

3: Partial enlargement shown in Figure 3 10:Subject 11:Outer tube 112:Inner tube wall 12:Inner tube 122:Outer tube wall 13:First end 14:Second end 15: Threaded section 16:Resistance surface 17:End face 20: Anti-leak ring 22: Ring outer edge 24: Ring inner edge 30: Push ring 32: Bearing surface 34:convex part 36: convex strip 90:Water pipe

Figure 1 is a perspective view of Embodiment 1 of the present invention. Figure 2 is a cross-sectional view of Embodiment 1 of the present invention. Figure 3 is a partial enlarged view of Figure 2. Figure 4 is a perspective view of a push ring according to the second embodiment of the present invention. Figure 5 is a partial cross-sectional view of the second embodiment of the present invention. Figure 6 is a partial cross-sectional view of the third embodiment of the present invention. Figure 7 is a partial bottom view of the fourth embodiment of the present invention.

3: Partial enlargement shown in Figure 3

10:Subject

11:Outer tube

12:Inner tube

13:First end

14:Second end

15: Threaded section

20: Anti-leak ring

30: Push ring

32: Bearing surface

90:Water pipe

Claims (6)

A pipe joint structure with a push ring, including: a main body, which is mainly composed of an outer tube sleeved with an inner tube. The outer tube is a tubular structure made of plastic material, and the inner tube is a tubular structure made of metal material. Structural body, the main body has a first end and a second end, the first end is used to connect a water pipe, the second end is used to connect a fluid device, so that water enters the main body through the first end, and The second end leaves the main body and enters the fluid device. One end of the outer tube forms the first end, and one end of the inner tube forms the second end. The inner tube forms a threaded section, and the threaded section is used for screw locking. Connected to the fluid device, the outer tube has an inner tube wall, the inner tube has an outer tube wall, and an annular abutment surface is formed between the inner tube wall and the outer tube wall, and the abutment surface faces the The first end; an elastic anti-leakage ring is provided inside the outer tube, with one axial end of the anti-leakage ring abutting the abutment surface, and the radial annular outer edge of the anti-leakage ring tightly abuts the inner tube wall, the radially upward annular inner edge of the anti-leak ring is tightly against the outer tube wall to prevent water from penetrating into the space between the outer tube and the inner tube; and a push ring is provided inside the outer tube, and the push ring And the abutment surface relatively presses the anti-leakage ring along the axial direction of the anti-leakage ring, so that the anti-leakage ring is elastically pressed against the inner tube wall and the outer tube wall; the push ring faces the first end An annular flow-bearing surface is formed on one side of the inner tube, and the flow-bearing surface bears the pressure caused by the flow of water to the inner tube, thereby improving the reliability of the push ring against the anti-leakage ring. The pipe joint structure with a push ring as described in claim 1, wherein the push ring has an annular shape The inner edge is radially reduced to form a convex portion. The pipe joint structure with a push ring as described in claim 1, wherein the abutment surface is formed by the outer tube and the inner tube. The pipe joint structure with a push ring as described in claim 1, wherein the push ring and the outer tube form a tight fit in the radial direction. The pipe joint structure with a push ring as described in claim 1 or 4, wherein the push ring's outer peripheral edge in the radial direction forms several ridges along the axial direction, and each of the ridges is tightly against the inner pipe wall. The pipe joint structure with a push ring as described in claim 1, wherein the push ring and the outer pipe are screwed or glued together.

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