In-wall hidden type water pipe elbow convenient to install

Abstract

An in-wall hidden type water pipe elbow convenient to install comprises an elbow body, the elbow body comprises a water inlet and a water outlet, the elbow body can penetrate through a wall plate from the inner side of the wall plate, and the water outlet of the elbow body is exposed out of the outer side of the wall plate; a fastening structure is further arranged on the elbow body, the elbow body is fixedly connected to a wall plate through the fastening structure, and the fastening structure comprises a fixed plate, a movable ring and a fastener. The fixing plate is arranged on the surface of the elbow body in a protruding mode. The movable ring is movably arranged on the elbow body in a sleeving manner; the fastener is arranged on the fixed plate and the movable ring in a penetrating manner, so that the fixed plate is connected with the movable ring; after the movable ring and the fixed plate are connected through the fastener, the wall plate can be clamped between the movable ring and the fixed plate, the elbow body is fixed on the wall plate, and only the movable ring is exposed out of the outer side of the wall plate, so that the appearance of the wall plate cannot be greatly influenced.

Description

Technical Field

[0001] The utility model relates to the field of water pipe elbows, in particular to an in-wall hidden water pipe elbow that is easy to install. Background Art

[0002] In a pipeline system, an elbow is a pipe fitting that changes the direction of the pipeline; when laying the water pipes in existing houses, they are all laid close to the wall surface. In some cases where higher appearance requirements are needed, the water pipes are even laid inside the wall surface. Therefore, the elbow used to change the direction of the water pipe pipeline also needs to be fixed relative to the wall surface.

[0003] Common water pipe elbows that can be fixed on the market usually have a mounting seat on the surface of the elbow. Then, when installing the elbow, fastening parts such as screws can be used to pass through the mounting seat to connect it to the wall surface, thereby fixing the entire water pipe elbow to the wall surface.

[0004] As disclosed in the Chinese patent with the patent number ZL202322920812.5: "A water pipe elbow with a butterfly base, including an elbow body, a butterfly base is provided on the elbow body, and three mounting long grooves are symmetrically arranged on both sides of the butterfly base. The base of this utility model adopts a butterfly-shaped base, and three mounting groove long grooves are symmetrically arranged on both sides of the butterfly base. Thus, when installing and fixing, any one or more of the grooves on both sides can be selected as the mounting holes for use to adapt to different installation positions. In addition, the position of the mounting holes can be rotated within the length range of the mounting groove long grooves to adapt to different working conditions. The installation adaptability is stronger and it is more convenient to use."

[0005] Including the solutions described in the above patents, the water pipe elbows in the prior art are generally connected to the wall surface. However, with the development of decoration technology, in order to make the decoration effect more beautiful, a wall panel is now also covered outside the wall surface, and the corresponding pipeline needs to be arranged inside the wall panel. However, since the water pipe elbows in the prior art only design the fixing structure relative to the wall surface, there is a lack of a water pipe joint that can form a fixed connection with the wall panel and can be hidden inside the wall panel to reduce the impact on the appearance of the wall panel surface. Summary of the Invention

[0006] In order to overcome the deficiency in the prior art that there is a lack of a water pipe elbow that can form a fixed connection with the wall panel and can be hidden inside the wall panel, the utility model provides an in-wall hidden water pipe elbow that is easy to install.

[0007] The technical solution for the utility model to solve its technical problems is: an in-wall hidden water pipe elbow that is easy to install, including:

[0008] Elbow body, which includes a water inlet and a water outlet, and the elbow body can pass through the wall panel from the inner side of the wall panel and make its water outlet expose from the outer side of the wall panel;

[0009] A fastening structure is further provided on the elbow body, and the elbow body is fixedly connected to the wall panel through the fastening structure. The fastening structure includes:

[0010] A fixing plate, which protrudes from the surface of the elbow body;

[0011] A movable ring, which is movably sleeved on the elbow body, and the movable ring can move closer to or away from the fixing plate, and a fastening gap for clamping the wall panel is left between the movable ring and the fixing plate;

[0012] A fastener, which passes through the fixing plate and the movable ring to connect the fixing plate and the movable ring, and the movable ring can be driven to move through the fastener to adjust the size of the fastening gap.

[0013] Further, the elbow body includes a first straight pipe section, a second straight pipe section and a bent pipe section. The bent pipe section is connected between the first straight pipe section and the second straight pipe section. The water outlet is located at the free end of the first straight pipe section, and the water inlet is located at the free end of the second straight pipe section. The first straight pipe section can form a plug-in fit with the wall panel, and the fastening structure is arranged on the first straight pipe section.

[0014] Further, the fastener is set as a plurality of fastening bolts. A plurality of bolt holes for the fixing bolts to pass through are formed on the movable ring, and a plurality of threaded holes that can form a threaded fit with the fixing bolts are formed on the fixing plate. After the fixing bolts pass through the bolt holes, their heads form an interference fit with the outer side of the movable ring, and their rod parts are tightened in the threaded holes of the fixing plate.

[0015] Further, the fastening assembly further includes an inner sealing gasket and an outer sealing gasket sleeved on the elbow body. The inner sealing gasket and the outer sealing gasket are both located in the fastening gap. The inner sealing gasket is in contact with the fixing plate, and the outer sealing gasket is in contact with the movable ring. When the wall panel is clamped in the fastening gap, the inner sealing gasket is in sealing fit between the fixing plate and the inner side of the wall panel, and the outer sealing gasket is in sealing fit between the movable ring and the outer side of the wall panel.

[0016] Further, a sealing protrusion protrudes from the outer sealing gasket towards the movable ring. The outer wall of the sealing protrusion forms a tight fit with the inner wall of the movable ring, and the inner wall of the sealing protrusion forms a tight fit with the surface of the elbow body.

[0017] Further, a fitting groove is recessed on one side of the movable ring facing the fastening gap, and the outer sealing gasket is fitted in the fitting groove.

[0018] Further, the fastening assembly further includes a sealing ring sleeved on the elbow body. The sealing ring is located in the fastening gap and forms a fit with the inner sealing gasket. The inner sealing gasket is clamped between the sealing ring and the fixing plate. A clamping groove is further formed in a circumferential manner on the surface of the elbow body, and the inner ring of the sealing ring is clamped and fitted in the clamping groove.

[0019] Further, a water pipe socket column is arranged at the free end of the first straight pipe section. A plurality of circumferential sealing ribs are convexly arranged on the surface of the socket column, and the sealing ribs can form an interference fit with the inner wall of the water pipe.

[0020] Further, an internal thread is arranged at the water outlet in the second straight pipe section, and an external pipe fitting can be in threaded fit with the water outlet to realize connection with the elbow body.

[0021] Installation method of the utility model:

[0022] First, before installing the water pipe elbow, in the first step, the inner sealing gasket needs to be sleeved on the first straight pipe section of the elbow body, and the inner sealing gasket is pushed to fit onto the fixing plate. Then, the sealing ring is also sleeved on the first straight pipe section, and the sealing ring is moved towards the inner sealing gasket until the inner ring of the sealing ring is clamped and fitted in the clamping groove. At this time, the inner sealing gasket is clamped between the sealing ring and the fixing plate.

[0023] Next, the elbow body is installed on the wall panel. The first straight pipe section of the elbow body is inserted from the inner side of the wall panel into the hole reserved on the wall panel. The first straight pipe section is completely inserted into the hole of the wall panel so that the water outlet can be exposed from the front side of the wall panel. Then, the position of the elbow body is slightly adjusted. After the position of the elbow body is determined, at this time, small holes for the fastening bolts to pass through can be drilled on the wall panel according to the positions corresponding to the threaded holes on the fixing plate. Subsequently, the movable ring is taken out, the outer sealing gasket is first attached to the inner side of the movable ring, and the outer sealing gasket is fitted into the fitting groove. Then, the entire movable ring together with the outer sealing gasket is sleeved on the first straight pipe section from the outer side of the wall panel, and the bolt holes on the movable ring are aligned with the small holes drilled on the wall panel. Finally, the fastening bolts can be sequentially passed through the bolt holes on the movable ring and the small holes on the wall panel and then tightened into the bolt holes of the fixing plate. When the fastening bolts are completely tightened, at this time, the movable ring and the fixing plate are respectively clamped on the wall panel from the outer side and the inner side, and at this time, the fixing of the elbow body relative to the wall panel is completed.

[0024] The beneficial effects of the utility model are as follows:

[0025] 1. The elbow body is not only convexly provided with a fixing plate, but also movably sleeved with a movable ring, so that the fixing plate can fit against the inner side of the wall panel, and the movable ring is sleeved on the elbow body from the outer side of the wall panel. After the connection between the movable ring and the fixing plate is completed by relying on fasteners, the wall panel can be clamped between the two to complete the fixation of the elbow body on the wall panel. Moreover, since only the movable ring is exposed outside the wall panel, it will not have too much impact on the appearance of the wall panel;

[0026] 2. The fastening assembly also includes an inner gasket and an outer gasket. The inner and outer gaskets are respectively relied on to complete the sealing fit between the fastening assembly, the elbow body and the inner and outer sides of the wall panel, so as to prevent liquid from entering between the three through the gap between the fastening assembly and the elbow body, thereby reducing the corrosion received by the elbow body and the wall panel and ensuring the stability of the connection between the elbow body and the wall panel;

[0027] 3. A sealing ring is also provided. The sealing ring can not only limit the inner gasket, restricting the movement of the inner gasket relative to the elbow body, but also further enhance the strength of the sealing fit between the fixing plate and the inner side of the wall panel after the installation of the elbow body, so as to ensure that the water vapor in the subsequent cavity will not seep out through the gap between the fixing plate and the wall panel;

[0028] 4. Socket columns and internal threads are respectively arranged at both ends of the elbow body, so as to facilitate the connection between both ends of the elbow body and water pipes or pipe fittings, and facilitate the connection of subsequent pipelines. Brief Description of the Drawings

[0029] Figure 1 is a schematic structural diagram of Embodiment 1 of the present utility model.

[0030] Figure 2 is an exploded schematic diagram of Embodiment 1 of the present utility model.

[0031] Figure 3 is a cross-sectional view of Embodiment 1 of the present utility model.

[0032] Figure 4 is a schematic structural diagram of the elbow body in Embodiment 1 of the present utility model.

[0033] Figure 5 is a schematic structural diagram of the movable ring in Embodiment 1 of the present utility model.

[0034] Figure 6 is a schematic structural diagram of the outer gasket in Embodiment 1 of the present utility model.

[0035] Figure 7 is an installation schematic diagram of Embodiment 1 of the present utility model on the wall panel.

[0036] Figure 8It is a schematic structural diagram of the movable ring in the second embodiment of the present utility model.

[0037] Figure 9 It is a cross-sectional view of the second embodiment of the present utility model.

[0038] Reference numerals in the figure: 1, elbow body; 2, water inlet; 3, water outlet; 4, fixing plate; 5, movable ring; 6, fastening gap; 7, fastener; 8, first straight pipe section; 9, second straight pipe section; 10, elbow pipe section; 11, fastening bolt; 12, bolt hole; 13, threaded hole; 14, inner gasket; 15, outer gasket; 16, sealing protrusion; 17, embedding groove; 18, sealing ring; 19, clamping groove; 20, socket column; 21, sealing rib; 22, internal thread; 23, avoidance notch; 24, sealing sleeve; 100, wall panel. Detailed implementation manner

[0039] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0040] It should be understood that although the terms upper, middle, lower, top, one end, etc. appear in this text to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for easy understanding, rather than to define any directional or sequential limitations. Embodiment

[0041] Combined with Figures 1 to 7 As shown, a wall-embedded hidden water pipe elbow convenient for installation includes an elbow body 1. The elbow body 1 includes a water inlet 2 and a water outlet 3. The elbow body can pass through the wall panel 100 from the inner side of the wall panel 100 and expose its water outlet 3 from the outer side of the wall panel 100; a fastening structure is further provided on the elbow body 1. The elbow body 1 is fixedly connected to the wall panel 100 through the fastening structure. The fastening structure includes a fixing plate 4, a movable ring 5 and a fastener 7; the fixing plate 4 protrudes from the surface of the elbow body 1; the movable ring 5 is movably sleeved on the elbow body 1, and the movable ring 5 can move closer to or away from the fixing plate 4. A fastening gap 6 for clamping the wall panel 100 is left between the movable ring 5 and the fixing plate 4; the fastener 7 passes through the fixing plate 4 and the movable ring 5 to connect the fixing plate 4 and the movable ring 5, and the fastener 7 can drive the movable ring 5 to move to adjust the size of the fastening gap 6.

[0042] Combined withFigure 2 , Figure 4 and Figure 7 As shown in Figure 2 , Figure 4 and Figure 7 , in this embodiment, the elbow body 1 includes a first straight pipe section 8, a second straight pipe section 9 and a bent pipe section 10. The bent pipe section 10 is connected between the first straight pipe section 8 and the second straight pipe section 9. The water outlet 3 is located at the free end of the first straight pipe section 8, and the water inlet 2 is located at the free end of the second straight pipe section 9. The first straight pipe section 8 can form a plug-in fit with the wall panel 100, and the fastening structure is arranged on the first straight pipe section 8.

[0043] Combined with Figures 1 to 3 As shown in Figures 1 to 3 , in this embodiment, the fastener 7 is provided as a plurality of fastening bolts 11. A plurality of bolt holes 12 for the fixing bolts to pass through are formed in the movable ring 5, and a plurality of threaded holes 13 capable of forming a threaded fit with the fixing bolts are formed in the fixing plate 4. After the fixing bolts pass through the bolt holes 12, their heads form an interference fit with the outer side of the movable ring 5, and their rod parts are tightened in the threaded holes 13 of the fixing plate 4.

[0044] Combined with Figure 2 and Figure 3 As shown in Figure 2 and Figure 3 , in this embodiment, the fastening assembly further includes an inner gasket 14 and an outer gasket 15 sleeved on the elbow body 1. The inner gasket 14 and the outer gasket 15 are both located in the fastening gap 6. The inner gasket 14 is in contact with the fixing plate 4, and the outer gasket 15 is in contact with the movable ring 5. When the wall panel 100 is clamped in the fastening gap 6, the inner gasket 14 is in sealing fit between the fixing plate 4 and the inner side of the wall panel 100, and the outer gasket 15 is in sealing fit between the movable ring 5 and the outer side of the wall panel 100.

[0045] Among them, as shown in Figure 2 In this embodiment, a plurality of avoiding notches 23 for avoiding the fastening bolts 11 are formed on the outer edges of the inner gasket 14 and the outer gasket 15.

[0046] Combined with Figure 3 and Figure 6 As shown in Figure 3 and Figure 6 , in this embodiment, the outer gasket 15 further protrudes a sealing protrusion 16 towards the movable ring 5. The outer wall of the sealing protrusion 16 is in close contact with the inner wall of the movable ring 5, and the inner wall of the sealing protrusion 16 is in close contact with the surface of the elbow body 1.

[0047] Combined with Figure 3 and Figure 5 As shown in Figure 3 and Figure 5 , in this embodiment, an embedding groove 17 is recessed on one side of the movable ring 5 facing the fastening gap 6, and the outer gasket 15 is embedded in the embedding groove 17.

[0048] Combined with Figures 2 to 4As shown, in this embodiment, the fastening assembly further includes a sealing ring 18 sleeved on the elbow body 1. The sealing ring 18 is located in the fastening gap 6 and forms a fit with the inner sealing pad 14. The inner sealing pad 14 is clamped between the sealing ring 18 and the fixing plate 4. A circumferential clamping groove 19 is further formed on the surface of the elbow body 1, and the inner ring of the sealing ring 18 is clamped and fitted in the clamping groove 19.

[0049] Combined with Figures 1 to 4 As shown, in this embodiment, a water pipe socket column 20 is provided at the free end of the first straight pipe section 8. A plurality of circumferential sealing ribs 21 are convexly provided on the surface of the socket column 20, and the sealing ribs 21 can form an interference fit with the inner wall of the water pipe.

[0050] Combined with Figures 1 to 4 As shown, in this embodiment, an internal thread 22 is provided at the water outlet 3 in the second straight pipe section 9. An external pipe fitting can be threadedly fitted into the water outlet 3 to realize the connection with the elbow body 1.

[0051] In this embodiment, after the elbow body 1 is fixed on the wall panel 100, the connection of the water pipes or pipe fittings at both ends of the elbow body 1 can be carried out. Due to the setting of the socket column 20 at the water inlet 2 of the elbow body 1, the head of the water pipe can be sleeved on the socket column 20 after heating, and after the head of the water pipe is cooled and formed, the inner wall of the water pipe will shrink and form a sealing fit with the sealing ribs 21 on the socket column 20. And due to the internal thread 22 provided on the inner wall of the water outlet 3 of the elbow body 1, external pipe fittings such as faucets and water distribution valves can be directly screwed and tightened on the elbow body 1 through threaded connection.

[0052] The installation method of this embodiment:

[0053] First, before installing the water pipe elbow, in the first step, the inner sealing pad 14 needs to be sleeved on the first straight pipe section 8 of the elbow body 1, and the inner sealing pad 14 is pushed to fit it to the fixing plate 4. Then, the sealing ring 18 is also sleeved on the first straight pipe section 8, and the sealing ring 18 is moved towards the inner sealing pad 14 until the inner ring of the sealing ring 18 is clamped and fitted in the clamping groove 19. At this time, the inner sealing pad 14 is clamped between the sealing ring 18 and the fixing plate 4;

[0054] Next, the elbow body 1 is installed on the wall panel 100. The first straight pipe section 8 of the elbow body 1 is inserted from the inner side of the wall panel 100 into the reserved hole on the wall panel 100. The first straight pipe section 8 is completely inserted into the hole of the wall panel 100 so that the water outlet 3 can be exposed from the front side of the wall panel 100. Then, slightly adjust the position of the elbow body 1. After the position of the elbow body 1 is determined, at this time, small holes for the fastening bolts 11 to pass through can be drilled in advance on the wall panel 100 according to the positions corresponding to the threaded holes 13 on the fixing plate 4. Subsequently, the movable ring 5 is taken out. The outer sealing gasket 15 is first attached to the inner side of the movable ring 5, and the outer sealing gasket 15 is fitted into the fitting groove 17. Then, the entire movable ring 5 together with the outer sealing gasket 15 is sleeved on the first straight pipe section 8 from the outer side of the wall panel 100, and the bolt holes 12 on the movable ring 5 are aligned with the small holes drilled on the wall panel 100. Finally, the fastening bolts 11 can be sequentially passed through the bolt holes 12 on the movable ring 5 and the small holes on the wall panel 100, and then tightened into the bolt holes 12 of the fixing plate 4. When the fastening bolts 11 are completely tightened, at this time, the movable ring 5 and the fixing plate 4 are clamped on the wall panel 100 from the outer side and the inner side respectively, and at this time, the fixing of the elbow body 1 relative to the wall panel 100 is completed.

[0055] The advantages of this embodiment are as follows: Relying on the fastening group, the fixing of the elbow body on the wall panel can be realized, and after fixing, it will not cause too much impact on the appearance of the outer side of the wall panel. Moreover, the sealing performance between the fastening component, the wall panel and the elbow body is also ensured. Embodiment

[0056] Combined with Figure 8 and Figure 9 As shown, the main difference feature between this embodiment and the above-mentioned Embodiment 1 is that: in this embodiment, the outer sealing gasket 15 is not attached to the inner side of the movable ring 5, but is replaced by a sealing sleeve 24 sleeved on the inner ring of the movable ring 5.

[0057] Combined with Figure 8 and Figure 9 As shown, in this embodiment, the seal completely covers the inner ring of the movable ring 5 and extends to both sides of the movable ring 5. When the movable ring 5 is sleeved on the first straight pipe section 8, the sealing sleeve 24 can form a sealing fit with the surface of the first straight pipe section 8.

[0058] In this embodiment, the rest of the structures, methods and advantages are the same as those in the above-mentioned Embodiment 1, and will not be elaborated here.

[0059] The advantages of this embodiment are as follows: The sealing between the movable ring and the first straight pipe section is realized by the sealing sleeve. Since the sealing sleeve is directly covered on the inner ring of the movable ring, the integrity with the rest of the movable ring is higher, the sealing effect is better, and the installation of the movable ring is also simpler.

[0060] The above specific embodiments are only explanations of the present utility model, and they are not limitations thereof. After reading this specification, those skilled in the art can make modifications to these embodiments without creative contributions as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by the patent law.

Claims

1. An in-wall hidden water pipe elbow that is easy to install, comprising: An elbow body (1), which includes a water inlet (2) and a water outlet (3). The elbow body can pass through the wall panel (100) from the inner side of the wall panel (100) and expose its water outlet (3) from the outer side of the wall panel (100); It is characterized in that A fastening structure is further provided on the elbow body (1). The elbow body (1) is fixedly connected to the wall panel (100) through the fastening structure. The fastening structure includes: A fixing plate (4), which protrudes from the surface of the elbow body (1); A movable ring (5), which is movably sleeved on the elbow body (1), and the movable ring (5) can move closer to or away from the fixing plate (4). A fastening gap (6) for clamping the wall panel (100) is left between the movable ring (5) and the fixing plate (4); A fastener (7), which penetrates through the fixing plate (4) and the movable ring (5) to connect the fixing plate (4) and the movable ring (5). The fastener (7) can drive the movable ring (5) to move to adjust the size of the fastening gap (6).

2. The wall-mounted hidden water pipe elbow according to claim 1, characterized in that: The elbow body (1) includes a first straight pipe section (8), a second straight pipe section (9) and a bent pipe section (10). The bent pipe section (10) is connected between the first straight pipe section (8) and the second straight pipe section (9). The water outlet (3) is located at the free end of the first straight pipe section (8), and the water inlet (2) is located at the free end of the second straight pipe section (9). The first straight pipe section (8) can form a plug-in fit with the wall panel (100), and the fastening structure is arranged on the first straight pipe section (8).

3. The in-wall concealed water pipe elbow according to claim 1, characterized in that: The fastener (7) is provided as a plurality of fastening bolts (11). A plurality of bolt holes (12) for the fixing bolts to pass through are formed on the movable ring (5), and a plurality of threaded holes (13) that can form a threaded fit with the fixing bolts are formed on the fixing plate (4). After the fixing bolts pass through the bolt holes (12), their heads form an interference fit with the outer side of the movable ring (5), and their rod parts are tightened in the threaded holes (13) of the fixing plate (4).

4. The wall-mounted hidden water pipe elbow according to claim 1, characterized in that: The fastening assembly further includes an inner sealing gasket (14) and an outer sealing gasket (15) sleeved on the elbow body (1). The inner sealing gasket (14) and the outer sealing gasket (15) are both located in the fastening gap (6). The inner sealing gasket (14) is in contact with the fixing plate (4), and the outer sealing gasket (15) is in contact with the movable ring (5). When the wall panel (100) is clamped in the fastening gap (6), the inner sealing gasket (14) is sealingly fitted between the fixing plate (4) and the inner side of the wall panel (100), and the outer sealing gasket (15) is sealingly fitted between the movable ring (5) and the outer side of the wall panel (100).

5. The in-wall concealed water pipe elbow according to claim 4, characterized in that: The outer sealing gasket (15) further protrudes towards the movable ring (5) with a sealing protrusion (16). The outer wall of the sealing protrusion (16) is in close contact with the inner wall of the movable ring (5), and the inner wall of the sealing protrusion (16) is in close contact with the surface of the elbow body (1).

6. The wall-mounted hidden water pipe elbow according to claim 4, characterized in that: A recessed engaging groove (17) is provided on the side of the movable ring (5) facing the fastening gap (6), and the outer sealing gasket (15) is embedded in the recessed engaging groove (17).

7. The wall-mounted hidden water pipe elbow according to claim 4, characterized in that: The fastening assembly also includes a sealing ring (18) sleeved on the elbow body (1); the sealing ring (18) is located in the fastening gap (6) and fits with the inner sealing gasket (14); the inner sealing gasket (14) is clamped between the sealing ring (18) and the fixing plate (4); a circle of snap-fit grooves (19) are also provided on the surface of the elbow body (1); the inner circle of the sealing ring (18) is snap-fitted into the snap-fit groove (19).

8. The wall-mounted hidden water pipe elbow according to claim 2, wherein: The first straight pipe section (8) is provided with a socket column (20) for socketing a water pipe at its free end, and a plurality of circles of sealing ribs (21) are protruding from the surface of the socket column (20). The sealing ribs (21) can form an interference fit with the inner wall of the water pipe.

9. The wall-mounted hidden water pipe elbow according to claim 2, characterized in that: The second straight pipe section (9) is provided with an internal thread (22) at the water outlet (3), and an external pipe connector can be threadedly engaged in the water outlet (3) to achieve connection with the elbow body (1).

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