A concealed flush toilet pipeline connecting structure

Abstract

A hidden flush toilet pipeline connecting structure, it includes fixedly installed on the wall support, the middle part of support is transversely installed with fixed plate, the fixed plate is equipped with installation hole, the edge of installation hole is extended to its radial direction and is provided with avoidance slot; The support is also installed with flush tank, the bottom of flush tank is connected with flush pipe downward, the end of flush pipe is provided with pipe clamp, the cylindrical surface of pipe clamp protruding flush pipe is provided, pipe clamp is rotated 90 DEG after passing through avoidance slot, makes it with avoidance slot dislocation, and covers on the surface of support, realizes the connection of flush pipe and fixed plate; The pipe orifice of flush pipe is provided with butt joint pipe and toilet connection. The utility model has the advantages that: the utility model is equipped with installation hole with avoidance slot on the fixed plate, and is matched with rotatable pipe clamp which is arranged at the end of flush pipe, is fixed, can lock flush pipe firmly and reliably in the accurate position which is designed.

Description

Technical Field

[0001] This utility model relates to the field of sanitary ware technology, specifically a concealed flush toilet pipe connection structure. Background Technology

[0002] Concealed flush toilets, also known as wall-mounted toilets or wall-hung toilets, are widely used in modern architecture and home renovations in recent years because their water tank and most of the piping are hidden inside the wall. They have a simple and aesthetically pleasing appearance, are easy to clean, and save bathroom space. A typical concealed flush toilet system mainly includes a metal bracket fixed in a pre-reserved space in the wall or built into a false wall, a concealed flush tank mounted on the bracket, a flush pipe connecting the flush tank outlet and the toilet inlet, and finally, a wall-mounted toilet body installed at the front of the bracket or connected to a floor-standing toilet.

[0003] In the installation process of a concealed toilet, the bracket with the flush tank is usually fixed to the wall structure first, and then the flush pipe is connected. One end of the flush pipe is connected to the water outlet of the flush tank, while the other end (drain end) needs to be precisely positioned and an interface is reserved so that it can be smoothly connected to the toilet's water inlet after the wall decoration is completed (such as tiling).

[0004] However, a common problem exists in existing installation practices: after the flush pipe is connected to the flush tank, before its final connection to the toilet, especially during the wall closure and decoration phases (such as bricklaying, plastering, and tiling), the fixing of its drain end is often unstable and imprecise. In many cases, the lower end of the flush pipe is simply suspended in the air or relies on temporary supports or simple positioning measures. There is a lack of a dedicated and reliable structure that can securely lock it in its designed position during wall construction.

[0005] This lack of secure fixing presents significant drawbacks. During subsequent wall construction, especially wet work such as plastering and tiling, the actions of construction workers, the stacking of materials, the compression of mortar, and vibrations and accidental collisions during construction can easily cause the originally positioned flush pipes to shift, deviate in angle, or even sink. Since most of the flush pipes are hidden, such changes in position are often difficult to detect and correct after the wall is sealed.

[0006] Once the wall decoration was completed and the toilet was ready for installation, it was discovered that the pre-installed flush pipe opening could not be precisely aligned with the toilet's inlet, resulting in misalignment or angular deviation. This poses significant challenges to the final installation, requiring installers to spend considerable time and effort on adjustments. For example, they might use non-standard connectors, forcibly twist the pipe (potentially causing stress concentration or damage), or in extreme cases, damage to the completed wall decoration to readjust the flush pipe's position. This not only severely impacts installation efficiency and quality, increasing unnecessary costs and delays, but improper connections can also lead to long-term problems such as leaks and poor flushing performance. Therefore, further improvements are necessary. Utility Model Content

[0007] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide a concealed flushing toilet pipe connection structure that is simple in structure, easy to use, and can stably and reliably fix the drain end of the flushing pipe of the concealed flushing toilet to a predetermined precise position on the bracket or related structure before the wall decoration construction is completed, effectively preventing displacement during subsequent construction, thereby ensuring the convenience and accuracy of the final toilet installation.

[0008] The purpose of this utility model is achieved in the following way: a concealed flush toilet pipe connection structure, which includes a bracket fixedly installed on the wall, a fixing plate horizontally installed in the middle of the bracket, an installation hole opened on the fixing plate, and a clearance groove extending radially from the edge of the installation hole.

[0009] The bracket is also equipped with a flush tank, and a flush pipe is connected downwards to the bottom of the flush tank. The end of the flush pipe is equipped with a pipe clamp, which protrudes from the cylindrical surface of the flush pipe. After passing through the clearance groove, the pipe clamp rotates 90° to misalign with the clearance groove and covers the surface of the bracket, thereby connecting the flush pipe to the fixed plate. The flush pipe is equipped with a connecting pipe at its inlet for connection to the toilet.

[0010] Furthermore, there are two pipe clamps, which are symmetrically distributed on the cylindrical surface of the flushing pipe.

[0011] Furthermore, the pipe clamp has a circumferentially extending limiting groove in the middle, which is clamped on the front and back surfaces of the mounting hole for installation.

[0012] Furthermore, the bottom of the limiting groove is coplanar with the outer cylindrical surface of the flushing pipe.

[0013] Furthermore, the back of the pipe clamp is provided with reinforcing ribs that connect to the outer cylindrical surface of the flushing pipe.

[0014] Furthermore, the drain end of the flushing pipe is fitted with a sealing ring, and the connecting pipe is inserted into the sealing ring to connect with the flushing pipe.

[0015] The beneficial effects of this utility model are: 1. Simple structure, low production cost, and improved market competitiveness.

[0016] 2. This utility model securely and reliably locks the flushing pipe in the precise design position by creating mounting holes with clearance grooves on the fixing plate and using rotatable pipe clamps at the end of the flushing pipe. This fundamentally solves the problem of displacement and deflection of the flushing pipe during subsequent construction in existing technologies.

[0017] 3. Because the drain end of the flush pipe is stably fixed to the mounting plate during the critical wall construction stage, its spatial position is precisely maintained. Therefore, when installing the toilet body after the wall decoration is completed, the flush pipe connector or its connection port can be precisely aligned with the toilet's inlet, greatly simplifying the final installation work and avoiding difficult adjustments, forced connections, or even damage to the wall due to on-site positional deviations.

[0018] 4. Precise pre-fixing and simplified post-installation connections significantly shorten the overall installation time of concealed toilet systems, reducing unnecessary rework and adjustments, thereby lowering labor costs. Simultaneously, reliable fixing and precise connection ensure the quality of pipe connections, reducing problems such as stress concentration and poor sealing caused by improper installation, and improving the long-term reliability of the entire bathroom system. Attached Figure Description

[0019] Figure 1 , 2 This is a rendering of the final assembly of this utility model.

[0020] Figure 3 In this utility model Figure 1 Enlarged view of the structure of part A.

[0021] Figure 4 In this utility model Figure 2 Enlarged view of the structure of part B.

[0022] Figure 5 This is an exploded view of the structure of this utility model.

[0023] Figure 6 This is an enlarged view of a portion of the flushing pipe in this utility model. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings. A concealed flushing toilet pipe connection structure includes a bracket 1 fixedly installed on the wall. A fixing plate 2 is horizontally installed in the middle of the bracket 1. The fixing plate 2 has a mounting hole 3. A clearance groove 4 is provided in the radial square extension of the outer circle of the mounting hole 3. A flush tank 5 is also installed on the bracket 1. A flushing pipe 6 is connected downward to the bottom of the flush tank 5. A pipe clamp 7 is provided at the end of the flushing pipe 6. The pipe clamp 7 is provided in the cylindrical surface of the flushing pipe 6. After passing through the clearance groove 4, the pipe clamp 7 rotates 90° to make it misaligned with the clearance groove 4 and covers the surface of the bracket 1, realizing the connection between the flushing pipe 6 and the fixing plate 2. A connecting pipe 8 is provided at the pipe opening of the flushing pipe 6 to connect to the toilet.

[0025] In use, firstly, the bracket 1, as the supporting body, is firmly fixed to the wall. A fixing plate 2 and a flush tank 5 are mounted on the bracket 1. The fixing plate 2 provides an installation interface for fixing the flush pipe 6, and has a specially shaped mounting hole 3, which includes a main circular hole and at least one radially extending clearance groove 4. The flush tank 5 delivers flushing water downwards through the flush pipe 6. At least one radially protruding pipe clamp 7 is pre-installed on the outer circumference of the end of the flush pipe 6 near the future toilet connection. The shape and size of this pipe clamp 7 are designed to allow passage through the clearance groove 4 on the fixing plate 2.

[0026] During installation, align the clamp 7 at the end of the flush pipe 6 with the clearance groove 4 on the fixing plate 2, and then pass the end of the flush pipe 6 through the mounting hole 3. After the clamp 7 has completely passed through the fixing plate 2, rotate the flush pipe 6 by 90° or other predetermined angle. This rotation causes the clamp 7 to no longer align with the clearance groove 4, but to be misaligned with it. Since the projected size of the clamp 7 after rotation is larger than the main diameter of the mounting hole 3, or at least cannot retract through the clearance groove in its rotated position, the inner surface of the clamp 7 will abut against and cover the surface of the fixing plate 2, surrounding the area of ​​the mounting hole 3.

[0027] Through the contact and coverage between the pipe clamp 7 and the surface of the fixing plate 2, the flush pipe 6 is axially and radially locked onto the fixing plate 2, preventing it from moving back and forth or rotating freely, thus achieving a reliable connection between the flush pipe 6 and the fixing plate 2. The flush pipe 6 is also equipped with a connecting pipe 8, which is used to easily connect to the toilet's inlet after the wall decoration is completed.

[0028] In this embodiment, a "pass-rotate-lock" operation method is adopted, which can quickly complete the initial fixation of the flush pipe 6 without additional fasteners or complicated tools, thus improving installation efficiency. The flush pipe 6 is firmly locked in the predetermined position of the bracket system before wall closure and decoration, such as tiling. This effectively prevents the flush pipe from shifting due to collisions, squeezing, or other reasons during subsequent construction, ensuring the accuracy of the drain outlet position.

[0029] Because of the accurate positioning in the early stage, the flush pipe 6 and the connecting pipe 8 can be easily aligned with the toilet inlet when the toilet is installed later. This greatly reduces the difficulty and time cost of the final connection and avoids the risk of difficulty in on-site adjustment or even damage to the wall.

[0030] In one embodiment, two pipe clamps 7 are provided, symmetrically distributed on the cylindrical surface of the flush pipe 6. In this embodiment, two pipe clamps 7 are provided on the outer circumferential surface of the end of the flush pipe 6, and these two pipe clamps 7 are symmetrically distributed, typically 180° symmetrical about the center of the pipe. During installation, these two symmetrical pipe clamps 7 need to be simultaneously aligned with the corresponding two clearance slots 4 on the fixing plate 2 and passed through. After rotating 90°, the two pipe clamps 7 will simultaneously abut and cover the surface of the fixing plate 2, acting on opposite sides of the mounting hole 3. The two symmetrical pipe clamps 7 provide two locking points, making the locking force applied to the flush pipe 6 more evenly distributed. Compared to a single pipe clamp, the symmetrical double pipe clamp structure can more effectively resist accidental rotation of the flush pipe 6 or shaking during use, making the connection more secure and reliable.

[0031] In one embodiment, the pipe clamp 7 has a circumferentially extending limiting groove 9 in the middle, which is clamped on the front and back surfaces of the mounting hole 3 for installation.

[0032] In this embodiment, a groove extending circumferentially along the pipe clamp 7 is formed in the middle portion of the pipe clamp 7, namely the limiting groove 9. The width of this limiting groove 9 is designed to be approximately equal to or slightly greater than the thickness of the fixing plate 2 at the edge of the mounting hole 3. After the pipe clamp 7 passes through the clearance groove 4 and is rotated 90° to lock, the portion of the fixing plate 2 located at the edge of the mounting hole 3 will be embedded in this limiting groove 9. The two opposing sidewalls of the limiting groove 9 abut against the front and back surfaces of the fixing plate 2 surrounding the area of ​​the mounting hole 3, respectively.

[0033] In this embodiment, stronger axial locking is provided: the engagement between the limiting groove 9 and the edge of the fixing plate 2 forms a snap-fit ​​structure, which can very effectively prevent the flush pipe 6 from moving axially, providing a stronger axial positioning capability than simple surface friction. When rotated into place, the edge of the fixing plate 2 falls into the limiting groove 9, producing a clear snap-fit ​​sensation, which helps to confirm that the installation is in place. At the same time, this embedded engagement further enhances the stability of the rotation direction.

[0034] In one embodiment, the bottom of the limiting groove 9 is coplanar with the outer cylindrical surface of the flushing pipe 6.

[0035] In this embodiment, the bottom surface of the limiting groove 9, i.e., the surface at the deepest point of the groove, is on the same plane as the outer cylindrical surface of the flush pipe 6 itself, or in other words, has the same radial distance. This means that the limiting groove 9 is carved inward on the protruding part of the pipe clamp 7 itself, and its bottom does not exceed the original contour of the flush pipe 6. This design allows the limiting groove 9 to be integrated within the necessary thickness of the pipe clamp 7, avoiding the additional increase in the overall radial dimension of the pipe clamp 7 due to the setting of the groove, and helping to maintain the compactness of the connection structure.

[0036] In one embodiment, the back of the pipe clamp 7 is provided with reinforcing ribs 10 that connect to the outer cylindrical surface of the flush pipe 6. These reinforcing ribs 10 are typically sheet-like or strip-like structures, with one end connected to the protruding portion of the pipe clamp 7 and the other end smoothly transitioning and connecting to the outer cylindrical surface of the flush pipe 6. They support the pipe clamp 7 like a bracket. The reinforcing ribs 10 significantly increase the pipe clamp 7's resistance to bending deformation, ensuring that the pipe clamp 7 will not easily break or deform during rotational locking operations or under long-term stress.

[0037] In one embodiment, a sealing ring 11 is fitted onto the drain end of the flush pipe 6, and the connecting pipe 8 is inserted into the sealing ring 11 to mate with the flush pipe 6. During installation, its insertion end is inserted into the inner hole of the sealing ring 11. The sealing ring 11, due to its elasticity, tightly fits between the outer surface of the connecting pipe 8 and the inner surface of the flush pipe 6 port.

[0038] The sealing ring 11 forms a reliable waterproof seal between the flushing pipe 6 and the connecting pipe 8, effectively preventing water leakage during flushing. At the same time, the elastic sealing ring 11 can absorb some installation alignment errors or dimensional tolerances, making the connection easier while ensuring the sealing effect.

[0039] In summary, the core working principle of the concealed flushing toilet pipe connection structure disclosed in this utility model is as follows: using a specially shaped mounting hole opened on the fixing plate 2 of the wall bracket 1, which is pre-fixed to the wall, to cooperate with the rotatable pipe clamp set on the outer periphery of the end of the flushing pipe 6.

[0040] During installation, the worker aligns the pipe clamp 7 at the end of the flush pipe 6 with the clearance groove 4 and passes it through the fixing plate 2. Then, the flush pipe 6 is rotated at a predetermined angle. This rotation causes the pipe clamp 7 to misalign with the clearance groove 4, and taking advantage of the fact that its rotated size is larger than the main diameter of the mounting hole 3, the pipe clamp 7 is pressed against the surface of the fixing plate 2, thereby quickly, firmly, and accurately locking the flush pipe 6 in the designed position. This process is carried out before the wall decoration is completed, effectively preventing the flush pipe from shifting during subsequent construction.

[0041] Finally, the drain end of the flush pipe 6 is sealed and connected to the connecting pipe 8 via the fitted sealing ring 11, preparing for subsequent connection to the toilet body. The entire structure, through a clever mechanical locking design, solves the problems of unstable flush pipe positioning, low installation accuracy, and difficulty in subsequent connection in existing technologies, significantly improving the installation efficiency, installation quality, and long-term reliability of concealed toilets, thus enabling its widespread adoption.

[0042] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of the claims of this utility model.

Claims

1. A concealed flushing toilet pipe connection structure, characterized in that: It includes a bracket (1) fixedly installed on the wall, a fixing plate (2) is horizontally installed in the middle of the bracket (1), the fixing plate (2) is provided with a mounting hole (3), and the edge of the mounting hole (3) is provided with a square-shaped clearance groove (4) extending radially therefrom. The bracket (1) is also equipped with a flush tank (5), and the bottom of the flush tank (5) is connected to a flush pipe (6). The end of the flush pipe (6) is provided with a pipe clamp (7). The pipe clamp (7) protrudes from the cylindrical surface of the flush pipe (6). After passing through the clearance groove (4), the pipe clamp (7) rotates 90° to make it misaligned with the clearance groove (4) and covers the surface of the bracket (1) to realize the connection between the flush pipe (6) and the fixing plate (2). The opening of the flush pipe (6) is provided with a connecting pipe (8) to connect to the toilet.

2. The concealed flushing toilet pipe connection structure according to claim 1, characterized in that: Two pipe clamps (7) are provided, symmetrically distributed on the cylindrical surface of the flushing pipe (6).

3. The concealed flushing toilet pipe connection structure according to claim 1, characterized in that: The pipe clamp (7) has a circumferentially extending limiting groove (9) in the middle, which is clamped on the front and back surfaces of the mounting hole (3) for installation.

4. The concealed flushing toilet pipe connection structure according to claim 3, characterized in that: The bottom of the limiting groove (9) is coplanar with the outer cylindrical surface of the flushing pipe (6).

5. The concealed flushing toilet pipe connection structure according to claim 1, characterized in that: The back of the pipe clamp (7) is provided with a reinforcing rib (10) that is connected to the outer cylindrical surface of the flushing pipe (6).

6. The concealed flushing toilet pipe connection structure according to claim 1, characterized in that: The drain end of the flush pipe (6) is fitted with a sealing ring (11), and the connecting pipe (8) is inserted into the sealing ring (11) and connected to the flush pipe (6).

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