A fixed sleeve assembly for a faucet that facilitates repair

Abstract

The application discloses a fixed pipe sleeve assembly of a faucet convenient to maintain, which comprises a water pool, a fixed pipe sleeve arranged in the water pool, a faucet assembly arranged in the fixed pipe sleeve, a sealing and pressing assembly arranged outside the fixed pipe sleeve, and a nut assembly arranged at the top of the fixed pipe sleeve. The faucet, a screw pipe and a water inlet hose constitute an independent unit which can be taken out from the fixed pipe sleeve as a whole. When being maintained, only the first nut is unscrewed and the second nut is loosened, and then the faucet, the screw pipe and the water inlet hose can be taken out from above the water pool. The whole process does not need to enter the narrow space below the water pool, does not need to disassemble the pressing nut pre-buried in the bottom of the pool, and does not need to damage the first sealing ring and the second sealing ring. The problems of difficult disassembly caused by rust of the nut below and narrow space in the traditional faucet maintenance are solved, the maintenance difficulty and time cost are greatly reduced, and the damage to the water pool or the wall surface in the maintenance process is avoided.

Description

Technical Field

[0001] This invention mainly relates to the field of valve installation and maintenance technology, specifically a fixed pipe sleeve assembly for easy maintenance of faucets. Background Technology

[0002] A faucet is a household plumbing device installed on sanitary ware such as washbasins, sinks, kitchen sinks, or bathtubs to control the flow and temperature of hot and cold water. Its basic structure includes a valve body, valve core, handle, and spout. Its working principle is that rotating or lifting the handle drives the internal valve core to move or rotate, thereby opening or closing the water passage and allowing tap water to flow from the spout. As a terminal control device for domestic water supply, the faucet is an indispensable hardware accessory in modern building water supply and drainage systems.

[0003] In existing technology, faucets typically pass directly through a hole in the sink or countertop and are secured by a locking nut underneath. The inlet hose is then connected to the bottom of the faucet. After long-term use, due to the humid environment under the sink, the locking nut is prone to rust and jamming. Furthermore, the space under the sink is usually very narrow, making it difficult for maintenance personnel to enter or reach, resulting in difficult or even impossible disassembly. In severe cases, it may be necessary to damage the sink or wall for repairs. In addition, traditional structures lack a limit design for the insertion depth of the faucet, relying entirely on manual judgment during installation. This can easily lead to improper sealing of the sealing ring due to insertion that is too deep or too shallow, causing leaks or unstable connections. Moreover, relying solely on a single bottom nut for locking can easily loosen under long-term water flow impact or vibration, affecting safety and lifespan. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a fixed pipe sleeve assembly for easy maintenance of faucets, so as to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A fixed sleeve assembly for easy maintenance of a faucet includes a water tank, a fixed sleeve inside the water tank, a faucet assembly inside the fixed sleeve, a sealing and clamping assembly on the outside of the fixed sleeve, and a nut assembly on the top of the fixed sleeve.

[0007] Preferably, the faucet assembly includes a screw tube, a faucet, and a pipe body. The screw tube is provided inside the fixed sleeve, and the faucet is fixedly connected to the top of the screw tube. The pipe body is fixedly installed on the outside of the faucet.

[0008] Preferably, the sealing and clamping assembly includes a first sealing ring, a second sealing ring, and a clamping nut. The first sealing ring is provided between the fixed sleeve and the top of the water tank, and the second sealing ring is provided between the fixed sleeve and the bottom of the water tank. The fixed sleeve passes through the water tank through a through hole, and the bottom of the outer side of the fixed sleeve is connected to the clamping nut through a thread. After tightening, the top of the clamping nut contacts the bottom of the second sealing ring.

[0009] Preferably, the nut assembly includes a first nut and a second nut, the first nut is connected to the outer side of the top of the fixing sleeve through a thread, and a second nut is provided between the top of the fixing sleeve and the first nut, and the second nut is connected to the threaded tube through a thread.

[0010] Preferably, an annular limiting flange is fixedly connected to the bottom outer side of the spiral tube, and an annular step is fixedly connected to the bottom section of the inner wall of the fixed sleeve, with the top of the annular step contacting the bottom of the annular limiting flange.

[0011] Preferably, the bottom of the spiral tube is provided with multiple water inlet hoses, and the bottom of the water inlet hoses is connected to the angle valve.

[0012] Preferably, the fixing sleeve is a hollow cylinder with openings at both the top and bottom, and the screw tube is inserted from the top of the fixing sleeve and moves axially.

[0013] Preferably, when the bottom surface of the annular limiting flange contacts the top surface of the annular step, the screw tube stops moving downward, forming a lower limiting engagement.

[0014] Preferably, when the first nut is tightened to the outside of the top of the fixing sleeve through the thread, the second nut is pressed between the fixing sleeve and the first nut.

[0015] In summary, the present invention has the following main beneficial effects:

[0016] 1. By combining the faucet, screw pipe, and inlet hose into a single independent unit that can be removed from the fixed sleeve upwards, maintenance only requires unscrewing the first nut and loosening the second nut. The faucet, along with the screw pipe and inlet hose, can be removed directly from above the sink without entering the narrow space below the sink, without disassembling the pre-embedded compression nut at the bottom of the sink, and without damaging the first and second sealing rings. This completely solves the problem of difficult disassembly caused by rusted nuts and limited space in traditional faucet repairs, significantly reducing the difficulty and time cost of repairs, while also avoiding damage to the sink or wall during the repair process.

[0017] 2. By setting a fixed sleeve, a threaded tube, and a lower limit engagement between the annular limiting flange and the annular step, the insertion depth of the threaded tube is controlled. This ensures that the faucet is in the same standard position every time it is installed, avoiding sealing failure or unstable connection caused by excessive or shallow insertion. At the same time, the clamping structure of the first nut and the second nut locks the faucet and the threaded tube together in the fixed sleeve, forming a stable and reliable fixing system. Even under long-term use or water flow impact, the faucet will not loosen or rotate, significantly improving the repeatability of installation and the structural stability of long-term use. Attached Figure Description

[0018] Figure 1 This is a front sectional view of the overall structure of the present invention;

[0019] Figure 2 This is an isometric view of the overall structure of the present invention;

[0020] Figure 3 This is a top view of the overall structure of the present invention;

[0021] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 5 for Figure 2 Enlarged view at point B in the middle;

[0023] The accompanying drawings described above need to be accurate, and should be distinguished using sectional views, cross-sectional views, plan views, structural diagrams, and six-view diagrams.

[0024] Figure descriptions: 1. Water tank; 2. Fixed pipe sleeve; 3. Faucet assembly; 31. Screw pipe; 32. Faucet; 33. Pipe body; 4. Sealing and clamping assembly; 41. First sealing ring; 42. Second sealing ring; 43. Clamping nut; 5. Nut assembly; 51. First nut; 52. Second nut; 6. Annular limiting flange; 7. Annular step; 8. Inlet hose. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] The embodiments of the present invention will now be described.

[0027] In this embodiment, as shown... Figure 1 , 2As shown in Figures 3 and 5, a fixed sleeve assembly for easy maintenance of a faucet includes a water tank 1. The water tank 1 has a through hole for providing a passage for the fixed sleeve 2. The fixed sleeve 2 is installed inside the water tank 1 and is pre-fixed to the water tank 1 as a basic support component to provide an installation reference for other components. The faucet assembly 3 is installed inside the fixed sleeve 2. The faucet assembly 3 includes a screw tube 31, a faucet 32, and a pipe body 33. The screw tube 31 is installed inside the fixed sleeve 2 and is used to connect the faucet 32 ​​and transmit axial movement during installation. The faucet 32 ​​is fixedly connected to the top of the screw tube 31 and is used to control the opening and closing of the water flow. The pipe body 33 is fixedly installed on the outside of the faucet 32 ​​and is used to guide the water flow to a designated position.

[0028] The fixed sleeve 2 is a hollow cylindrical shape with openings at both the top and bottom to form a straight channel through it. A threaded tube 31 is inserted from the top of the fixed sleeve 2 and moves axially to achieve a detachable fit between the threaded tube 31 and the fixed sleeve 2. An annular limiting flange 6 is fixedly connected to the bottom outer side of the threaded tube 31, limiting its downward movement to the extreme position. An annular step 7 is fixedly connected to the bottom section of the inner wall of the fixed sleeve 2, forming a contact fit with the annular limiting flange 6. The top of the annular step 7 contacts the bottom of the annular limiting flange 6, providing a clear stop when the screw tube 31 is inserted into place. When the bottom surface of the annular limiting flange 6 contacts the top surface of the annular step 7, the screw tube 31 stops moving downward, forming a lower limit engagement to prevent the screw tube 31 from being over-inserted and damaging the sealing structure. The bottom of the screw tube 31 is provided with multiple water inlet hoses 8, which are used to deliver water from an external water source to the faucet 32. The bottom of the water inlet hoses 8 is connected to an angle valve, which is used to control the main switch of the water source.

[0029] In this embodiment, as shown... Figure 1 , 2 As shown in Figures 3 and 4, a sealing and clamping assembly 4 is provided on the outside of the fixed pipe sleeve 2. The sealing and clamping assembly 4 is used to prevent water from leaking from the edge of the through hole of the water tank 1. The sealing and clamping assembly 4 includes a first sealing ring 41, a second sealing ring 42, and a clamping nut 43. The first sealing ring 41 is used to seal the gap between the fixed pipe sleeve 2 and the top surface of the water tank 1. The second sealing ring 42 is used to seal the gap between the fixed pipe sleeve 2 and the bottom surface of the water tank 1. The clamping nut 43 is used to apply clamping force to compress and deform the sealing rings at both ends. The first sealing ring 41 is provided between the fixed pipe sleeve 2 and the top of the water tank 1. The first sealing ring 41 is pressed between the top surface of the water tank 1 and the outer wall of the fixed pipe sleeve 2 to prevent water from seeping into the through hole from the top of the water tank 1. The second sealing ring 42 is provided between the fixed pipe sleeve 2 and the bottom of the water tank 1. The second sealing ring 42 is pressed between the bottom surface of the water tank 1 and the outer wall of the fixed pipe sleeve 2 to prevent water from seeping along the pipe wall from the bottom of the water tank 1.

[0030] The fixing sleeve 2 passes through the through hole into the water tank 1, exposing it both above and below the water tank 1. This provides a connection channel for the faucet 32 ​​and the inlet hose 8. A compression nut 43 is threaded onto the bottom outer side of the fixing sleeve 2, used to tighten and secure the fixing sleeve 2 from below. After tightening, the top of the compression nut 43 contacts the bottom of the second sealing ring 42, pushing it upwards to compress the second sealing ring 42 axially and expand it radially. A nut assembly 5 is located at the top of the fixing sleeve 2, used to lock the faucet assembly 3 into the fixing sleeve 2 from above. The nut assembly 5 includes a first nut 51 and a second nut 52. The first nut 51 applies the main tightening force, and the second nut 52 fills the space between the first nut 51 and the fixing sleeve 2 and transmits pressure. The first nut 51 is threaded onto the outer top of the fixing sleeve 2. 51 is screwed downward along the thread on the top of the fixed sleeve 2 to generate a downward clamping force. A second nut 52 is provided between the top of the fixed sleeve 2 and the first nut 51. The second nut 52 is located below the first nut 51 and directly contacts the top of the fixed sleeve 2. It is used to protect the thread on the top of the fixed sleeve 2 and to evenly transmit pressure. The second nut 52 is connected to the screw tube 31 through the thread. When the first nut 51 is tightened to the outside of the top of the fixed sleeve 2 through the thread, the second nut 52 is pressed between the fixed sleeve 2 and the first nut 51, so that the second nut 52 is clamped and fixed to prevent the screw tube 31 from moving axially during use.

[0031] When it is necessary to remove the faucet 32 ​​from above the sink 1, first disconnect the inlet hose 8 from the angle valve, at which point the faucet 32 ​​is separated from the external water source. Then, loosen the first nut 51 in the reverse direction. The first nut 51 will come out upward along the thread on the top of the fixing sleeve 2, which is used to release the downward pressure on the second nut 52. Next, remove the second nut 52 from the gap between the fixing sleeve 2 and the screw tube 31. After the second nut 52 is removed, the axial constraint on the screw tube 31 is released, which is used to allow the screw tube 31 to move freely upward. Finally, hold the faucet 32 ​​and lift it upward, which will cause the screw tube 31 to slide upward along the inner cavity of the fixing sleeve 2. The annular limiting flange 6 at the bottom of the outer side of the screw tube 31 moves upward with the screw tube 31. Since the annular limiting flange 6 is located above the annular step 7, there is no obstruction between the two. Therefore, the screw tube 31 can be completely separated from the fixing sleeve 2, which is used to remove the faucet 32 ​​together with the screw tube 31 and the inlet hose 8 as a whole.

[0032] When reinstalling the faucet 32, insert the threaded tube 31 downwards from the opening at the top of the fixing sleeve 2. The threaded tube 31 slides downwards along the inner wall of the fixing sleeve 2 to guide the faucet 32 ​​into the correct position. The threaded tube 31 continues to move downwards until the bottom surface of the annular limiting flange 6 contacts the top surface of the annular step 7. At this point, the threaded tube 31 cannot move further downwards, ensuring accurate insertion depth and consistent installation position each time. Then, the second nut 52 is placed on the outside of the threaded tube 31 and screwed into the top of the fixing sleeve 2. The second nut 52 is used to initially fix the position of the threaded tube 31. Next, the first nut 51 is placed on the outside of the second nut 52 and tightened onto the external thread at the top of the fixing sleeve 2. The first nut 51 presses down on the second nut 52 to firmly lock the threaded tube 31 inside the fixing sleeve 2. Finally, reconnect the bottom of the inlet hose 8 to the angle valve to restore the water supply. At this point, the faucet 32 ​​can be used normally. Throughout the entire maintenance or replacement process, the operator remains standing above the water tank 1, without needing to enter the narrow space below the water tank 1, disassemble the clamping nut 43, or touch the first sealing ring 41 and the second sealing ring 42, thus enabling fast, safe, and convenient maintenance operations.

[0033] The working principle of this invention is as follows:

[0034] During installation, first, insert the fixing sleeve 2 into the through hole of the water tank 1, and set a first sealing ring 41 between the fixing sleeve 2 and the top of the water tank 1, and a second sealing ring 42 between the fixing sleeve 2 and the bottom of the water tank 1. Then, tighten the clamping nut 43 through the thread to the bottom of the outer side of the fixing sleeve 2, so that the top of the clamping nut 43 contacts the bottom of the second sealing ring 42 and presses upward, thereby sealing and fixing the fixing sleeve 2 to the water tank 1. Then, insert the threaded tube 31 axially downward into the fixing sleeve 2 from the upper opening. Since the bottom of the outer side of the threaded tube 31 is fixedly connected to the annular limiting flange 6, and the bottom section of the inner wall of the fixing sleeve 2 is fixedly connected to the annular step 7, when the bottom surface of the annular limiting flange 6 contacts the top surface of the annular step 7, the threaded tube 31 stops moving downward, forming a lower limit fit. At this time, the threaded tube 31 is inserted into place, and then the faucet 32 ​​is fixedly connected to the top of the threaded tube 31. The pipe body 33 is installed on the outside of the faucet 32. The first nut 51 is then connected to the top outside of the fixed sleeve 2 through a thread. A second nut 52 is placed between the top of the fixed sleeve 2 and the first nut 51, so that the second nut 52 is connected to the first nut 51 through a thread. When the first nut 51 is tightened, the second nut 52 is pressed between the fixed sleeve 2 and the first nut 51, thereby locking the faucet 32 ​​and the screw pipe 31 together in the fixed sleeve 2. Then, the water inlet hose 8 is connected to the bottom of the screw pipe 31 and the bottom of the water inlet hose 8 is connected to the angle valve to complete the installation of the faucet 32. When maintenance is required, simply disconnect the connection between the water inlet hose 8 and the angle valve, then unscrew the first nut 51 to release the pressure on the second nut 52, and then loosen the second nut 52. The faucet 32 ​​and the screw pipe 31 can then be taken out together from the opening at the top of the fixed sleeve 2 for maintenance or replacement.

[0035] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A fixed pipe sleeve assembly for easy maintenance of a faucet, comprising a water tank (1), characterized in that: The water tank (1) is provided with a fixed pipe sleeve (2) inside, and a faucet assembly (3) is provided inside the fixed pipe sleeve (2). A sealing and pressing assembly (4) is provided on the outside of the fixed pipe sleeve (2), and a nut assembly (5) is provided on the top of the fixed pipe sleeve (2).

2. The fixing sleeve assembly for faucet maintenance according to claim 1, characterized in that, The faucet assembly (3) includes a screw tube (31), a faucet (32), and a tube body (33). The fixed sleeve (2) has a screw tube (31) inside, and the top of the screw tube (31) is fixedly connected to the faucet (32), and the tube body (33) is fixedly installed on the outside of the faucet (32).

3. The fixing sleeve assembly for faucet maintenance according to claim 1, characterized in that, The sealing and pressing assembly (4) includes a first sealing ring (41), a second sealing ring (42), and a pressing nut (43). The first sealing ring (41) is provided between the fixed sleeve (2) and the top of the water tank (1), and the second sealing ring (42) is provided between the fixed sleeve (2) and the bottom of the water tank (1). The fixed sleeve (2) passes through the water tank (1) through a through hole, and the bottom of the outer side of the fixed sleeve (2) is connected to the pressing nut (43) through a thread. After tightening, the top of the pressing nut (43) contacts the bottom of the second sealing ring (42).

4. A fixing sleeve assembly for easy maintenance of a faucet according to claim 1, characterized in that, The nut assembly (5) includes a first nut (51) and a second nut (52). The first nut (51) is connected to the outer side of the top of the fixing sleeve (2) through a thread, and a second nut (52) is provided between the top of the fixing sleeve (2) and the first nut (51). The second nut (52) is connected to the screw tube (31) through a thread.

5. A fixing sleeve assembly for faucet maintenance according to claim 2, characterized in that, The bottom outer side of the spiral tube (31) is fixedly connected to an annular limiting flange (6), and the bottom inner wall of the fixed sleeve (2) is fixedly connected to an annular step (7), and the top of the annular step (7) contacts the bottom of the annular limiting flange (6).

6. A fixing sleeve assembly for faucet maintenance according to claim 2, characterized in that, The bottom of the spiral tube (31) is provided with multiple water inlet hoses (8), and the bottom of the water inlet hoses (8) is connected to the angle valve.

7. A fixing sleeve assembly for faucet maintenance according to claim 1, characterized in that, The fixed sleeve (2) is a hollow cylinder with openings at both the top and bottom. The screw tube (31) is inserted from the top of the fixed sleeve (2) and moves axially.

8. A fixing sleeve assembly for faucet maintenance according to claim 5, characterized in that, When the bottom surface of the annular limiting flange (6) contacts the top surface of the annular step (7), the screw tube (31) stops moving downward, forming a lower limiting engagement.

9. A fixing sleeve assembly for easy maintenance of a faucet according to claim 4, characterized in that, When the first nut (51) is tightened to the outside of the top of the fixed sleeve (2) through the thread, the second nut (52) is pressed between the fixed sleeve (2) and the first nut (51).

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