Sunken toilet prefabricated overhead structure
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN ZHONGYI CONSTR ENG CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-07-03
Smart Images

Figure CN224452140U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, and in particular to a prefabricated elevated structure for a sunken toilet. Background Technology
[0002] Sunken bathrooms are widely used in modern residential, office, and hotel buildings because they conceal drainage pipes above the floor slab, achieving both aesthetic appeal and sound insulation. Traditional construction methods for sunken bathrooms mainly include backfilling and raised-floor installation.
[0003] Backfilling construction typically uses materials such as expanded clay or fly ash. The disadvantages of this method include increased load on the building's floor slabs and additional structural requirements. The backfill material may also damage pipes and waterproofing layers within the enclosure, and in the event of leakage, it is difficult to pinpoint the leak point. Repairs may require the removal of the entire backfill and finishing layers, resulting in a large workload, numerous procedures, long repair times, and environmental impact.
[0004] The elevated construction method, which uses precast or cast-in-place reinforced concrete slabs, addresses some of the problems of backfill-based construction, but still has many shortcomings. For example, traditional precast or cast-in-place slabs are typically quite heavy, making installation, transportation, and dismantling / repair inconvenient. Furthermore, a leveling and sloping layer is usually cast on top of the elevated slab, further increasing the building's weight and construction complexity. In addition, in the event of leakage, removing the heavy concrete slabs and leveling layer is still a significant undertaking, hindering rapid repairs and failing to fundamentally solve the problem of difficult leakage repairs.
[0005] Therefore, there is an urgent need to develop a sunken toilet elevated structure that is easy to construct, convenient to maintain, and lightweight. Utility Model Content
[0006] The purpose of this utility model is to overcome the defects in the existing technology and provide a prefabricated elevated structure for sunken toilets that is easy to construct, lightweight, easy to maintain, and environmentally friendly.
[0007] To achieve the above objectives, this utility model provides a prefabricated elevated structure for a sunken bathroom. The prefabricated elevated structure includes a sunken box body 1, a grid beam frame 2, and lightweight elevated slabs 3. The bottom and inner walls of the sunken box body 1 are provided with a waterproof layer. The grid beam frame 2 is assembled from multiple prefabricated concrete beams 21 within the sunken box body 1, forming a grid-like load-bearing structure. Multiple lightweight elevated slabs 3 are laid on the grid beam frame 2, forming the base layer of the sunken bathroom. The lightweight elevated slabs 3 are detachable for use in accessing and maintaining the internal space of the sunken box body 1. The sunken box body typically refers to a sunken space reserved above a building floor slab, and its bottom and inner walls can be waterproofed using conventional methods, such as covering with a waterproof layer. The grid beam frame can be installed within the sunken box body using a modular, building-block-like assembly method from multiple prefabricated concrete beams. Those skilled in the art will readily understand that these precast concrete beams can be flexibly assembled as needed according to the size and specifications of the bathroom. The lightweight raised slabs can be connected or laid in a detachable manner to facilitate partial disassembly for maintenance.
[0008] According to the precast elevated structure of the sunken toilet of this utility model, the precast concrete beam 21 is provided with several splicing grooves; the grid beam frame 2 is provided with several supporting members 4 located at the bottom of the sunken box 1. The splicing grooves on the precast concrete beams are used to splice the precast concrete beams together to form a network structure. Those skilled in the art will readily understand that the width of the splicing grooves can be basically matched with the thickness of the precast concrete beams, so as to facilitate stable vertical splicing together. By setting supporting members under the grid beam frame, space can be provided for the installation, fixing and protection of pipes in the sunken box, and it can also be used to level and slope the grid beam frame and the lightweight elevated slab on it, thereby eliminating the need for the process of casting a leveling and sloping layer in place and reducing the self-weight of the structure.
[0009] According to the prefabricated elevated structure of the sunken bathroom of this utility model, the supporting component 4 is a lifting metal bracket. Using a lifting metal bracket allows for more convenient and precise adjustment of the height, levelness, and slope of the elevated layer, improving the stability of the grid beam frame.
[0010] According to the prefabricated elevated structure of the sunken toilet of this utility model, the lifting metal bracket is an aluminum alloy bracket with a threaded adjustment structure.
[0011] According to the prefabricated elevated structure of the sunken toilet of this utility model, the lightweight elevated panel 3 is an aluminum honeycomb panel. An aluminum honeycomb panel refers to a composite panel with aluminum honeycomb as the core material and aluminum plates bonded to both sides. Aluminum honeycomb panels are lightweight, have low density, high specific strength, and possess properties such as heat insulation, sound insulation, fire resistance, and moisture resistance. Furthermore, aluminum alloys are non-radioactive, do not release harmful gases detrimental to human health, and are easily recyclable.
[0012] According to the prefabricated elevated structure of the sunken toilet of this utility model, a toilet floor finish layer 5 is laid on the lightweight elevated slab 3.
[0013] According to the prefabricated elevated structure for sunken bathrooms of this utility model, waterproof sealing layers are provided at the joints between the lightweight elevated slabs 3 and at the joints between the lightweight elevated slabs 3 and the inner walls of the sunken enclosure 1. This structure can enhance the overall waterproof effect of the elevated layer and can reduce or eliminate the need for traditional waterproof coating construction on the lightweight elevated slabs.
[0014] According to the prefabricated elevated structure of the sunken toilet of this utility model, the toilet floor finish layer 5 is provided with at least one floor maintenance opening and a cover plate that cooperates with the floor maintenance opening. The finish on the cover plate of the floor maintenance opening can be the same as the floor finish layer. After opening, the lightweight elevated panel below can be removed, so that the interior of the sunken box 1 can be inspected, ventilated, cleaned, disinfected, or repaired for pipes.
[0015] According to the prefabricated elevated structure of the sunken toilet of this utility model, the position and size of the ground maintenance opening are set to allow the removal of at least one of the lightweight elevated panels 3 below it.
[0016] According to the prefabricated elevated structure of the sunken toilet of this utility model, a water collector and a secondary drain outlet connected to the drain pipe are provided near the lowest point of the bottom of the sunken tank 1. This structure can be used to drain water that may enter the sunken tank, thus serving as an effective supplement to the same-floor drainage system.
[0017] Based on the above technical solution, the prefabricated elevated structure for sunken bathrooms of this utility model has, but is not limited to, the following beneficial effects:
[0018] 1. The prefabricated elevated structure for sunken bathrooms of this utility model is simple and efficient to construct. The modular design, using prefabricated concrete beams assembled into a grid frame, allows for on-site assembly like building blocks, reducing construction difficulty and improving efficiency. The lightweight elevated slab uses aluminum honeycomb panels, which are lightweight, easy to transport, and easy to install, further shortening the construction period. Moreover, compared to traditional backfilling methods and cast-in-place concrete elevated slabs, this structure effectively reduces the load on the floor slab.
[0019] 2. The sunken toilet prefabricated elevated structure of this utility model mainly uses prefabricated components and dry construction, reducing on-site wet work and the use of cement mortar, which can significantly reduce the emission of construction waste and pollutants. Since backfilling is not required, backfill materials and corresponding labor costs are saved. Moreover, the materials used, such as aluminum honeycomb panels, are recyclable, making it more green and environmentally friendly, and in line with the requirements of low-carbon and sustainable development.
[0020] 3. The prefabricated elevated structure of the sunken bathroom in this utility model is more convenient for disassembly and maintenance. Due to the use of a prefabricated structure, in the event of leakage or pipe blockage, the lightweight elevated panel at the maintenance opening can be quickly and easily disassembled for inspection and repair, without needing to remove the grid beam frame. Therefore, maintenance work is minimally invasive, efficient, and causes almost no damage, resulting in lower maintenance costs and significantly extending the service life of the structure. Attached Figure Description
[0021] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings, wherein:
[0022] Figure 1 This invention provides a cross-sectional structural diagram of the prefabricated elevated structure for a sunken toilet.
[0023] Figure 2 A side view of the precast concrete beam of this utility model is shown;
[0024] Figure 3 A three-dimensional structural diagram of the grid beam frame in this utility model is shown.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. Sunken box structure; 2. Grid beam frame; 3. Lightweight raised slab; 4. Supporting components; 5. Bathroom floor finish; 21. Precast concrete beams. Detailed Implementation
[0027] The present invention will be further illustrated below with specific embodiments. However, it should be understood that these embodiments are merely for more detailed and specific explanation and should not be construed as limiting the present invention in any way. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0030] The following combination Figures 1 to 3 This paper describes and illustrates one embodiment of the prefabricated elevated structure for sunken toilets according to the present invention.
[0031] like Figure 1 As shown, the prefabricated elevated structure of the sunken toilet includes a sunken box body 1, a grid beam frame 2, and a lightweight elevated slab 3.
[0032] The bottom and inner walls of the sunken enclosure 1 are provided with a waterproof layer. This waterproof layer can be constructed according to design requirements, for example, a flexible waterproof coating can be used, and further, polyurethane waterproof coating, modified bitumen waterproof coating, acrylic waterproof coating, EVA waterproof coating, or other suitable materials can be selected as needed. A grid beam frame 2 is provided inside the sunken enclosure 1. In one embodiment, a water collector and a secondary drain outlet connected to the drainage pipe can be provided near the lowest point of the bottom of the sunken enclosure 1. Those skilled in the art will readily understand that the lowest point of the bottom of the sunken enclosure 1 is usually the lowest point of the slope to ensure that water flows down to the drainage pipe. When accidental water seepage occurs in the bathroom floor, or when a problem occurs in the same-floor drainage system causing water to flow to the area below the raised floor and collect at the bottom of the sunken enclosure 1, the water can be drained in a timely manner through the water collector and the secondary drain outlet to prevent prolonged water accumulation.
[0033] The grid-like beam frame 2 is assembled from multiple precast concrete beams 21, forming a mesh-like load-bearing structure. The precast concrete beams 21 can be prefabricated in a factory or quickly cut and manufactured on-site, depending on the different sizes and shapes of the bathroom. Those skilled in the art will readily understand that the cross-sectional shape and reinforcement of the precast concrete beams 21 can be designed according to specific needs to ensure load-bearing capacity while minimizing self-weight. For example... Figure 2 and Figure 3 As shown, in one embodiment, the precast concrete beam 21 is provided with several splicing grooves for splicing together to form a grid-like beam frame 2. Several supporting members 4 are provided between the grid frame 2 and the bottom of the sunken box 1 for support, leveling, and slope creation. In a preferred embodiment, the supporting members 4 can be lifting metal brackets. In a more preferred embodiment, the lifting metal brackets can be aluminum alloy brackets with threaded adjustment structures.
[0034] The lightweight raised panel 3 is laid on the grid frame 2, serving as the base layer of the sunken toilet. The lightweight raised panel 3 is detachable; for example, it can be directly placed on the grid frame 2 or fixed to it with clips to facilitate maintenance of the internal space of the sunken enclosure 1. In one embodiment, the lightweight raised panel 3 can be an aluminum honeycomb panel. Aluminum honeycomb panels are lightweight, high-strength, corrosion-resistant, and moisture-proof; their thickness can be appropriately selected according to load-bearing requirements, for example, 10-30mm. The aluminum honeycomb panels can be connected using tongue and groove joints, or appropriate gaps can be left and filled with flexible sealing material. In a preferred embodiment, a toilet floor finish layer 5 can be laid on the lightweight raised panel 3 to meet the user's decorative needs. In a more preferred embodiment, a waterproof sealing layer can be provided at the joints between the lightweight raised panels 3, and at the joints between the lightweight raised panel 3 and the inner walls of the sunken enclosure 1. In a further preferred embodiment, the bathroom floor finish layer 5 is provided with at least one floor access opening and a cover plate that mates with the floor access opening. The floor access opening can be located near an area with concentrated pipework or near a floor drain. The cover plate can be consistent with the surrounding finish material, such as a stainless steel drain panel or a concealed cover plate embedded in the same floor tiles. After opening the floor access opening, in order to facilitate the removal of the lightweight overhead panel 3 below for access to the sunken housing 1 for pipe inspection, repair, cleaning, ventilation, disinfection, and other operations, the position and size of the floor access opening can preferably be configured to allow the removal of at least one of the lightweight overhead panels 3 below it.
[0035] The main components of the prefabricated elevated structure for sunken toilets of this invention can all be mass-produced in a factory. Those skilled in the art can select appropriate production and installation processes based on the structure of this invention.
[0036] As an example, its construction method may include the following steps:
[0037] 1. Container Preparation and Waterproofing: Inspect and clean the sunken container. Conduct a water tightness test on the structural layer of the sunken container, and complete the waterproofing work around the cross-floor risers and openings. Based on design requirements, a secondary drain outlet and water collector can be installed at the lowest point of the sunken container, and connected to the drainage pipes. Then, complete the waterproofing work on the bottom and surrounding structural layers of the sunken container, conduct a water tightness test, and complete the slope preparation and waterproofing protective layer construction inside the container. Install and secure the bathroom drain pipes according to the design, and provide necessary protection.
[0038] 2. Installation of the raised floor: Install supporting components, such as multiple lifting metal brackets, at the bottom of the sunken box according to the predetermined positions and spacing, and initially adjust their height. Assemble precast concrete beams from the factory onto the supporting components to form a stable, grid-like beam frame, then adjust its height and level more precisely. After inspecting and accepting the pipes, waterproofing, and grid frame within the sunken box, lay lightweight raised floor panels, such as aluminum honeycomb panels, on the grid frame. Waterproofing and sealing treatment can be applied to the joints between the lightweight raised floor panels and the joints between them and the walls, as needed. Alternatively, waterproof membrane can be laid across the entire lightweight raised floor panel, followed by a secondary water tightness test.
[0039] 3. Finishing Layer Construction: Slope the lightweight raised slab with the drain as the lowest point, and then lay floor finishing materials such as tiles or stone. During the laying process, create and install floor maintenance access panels at predetermined locations, ensuring their covers are flush with the floor finishing layer and easily accessible for future maintenance. After all installations are completed, conduct overall drainage and water tightness tests on the bathroom to obtain the prefabricated raised structure for sunken bathrooms according to this utility model.
[0040] Although the present invention has been described to a certain extent, it is apparent that appropriate variations can be made to various conditions without departing from the spirit and scope of the present invention. It is understood that the above embodiments are exemplary and non-limiting, and the scope of the present invention is defined by the appended claims rather than the foregoing description; therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention. Furthermore, no reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A prefabricated elevated structure for a sunken toilet, characterized in that, The prefabricated elevated structure of the sunken toilet includes a sunken box (1), a grid beam frame (2), and lightweight elevated panels (3); the bottom and inner wall of the sunken box (1) are provided with a waterproof layer; the grid beam frame (2) is assembled by splicing multiple prefabricated concrete beams (21) inside the sunken box (1) to form a grid-like load-bearing structure; multiple lightweight elevated panels (3) are laid on the grid beam frame (2) to form the base layer of the sunken toilet; wherein, the lightweight elevated panels (3) are detachable for use in inspecting the internal space of the sunken box (1).
2. The sunken toilet prefabricated elevated structure according to claim 1, characterized in that, The precast concrete beam (21) is provided with several splicing grooves; the grid beam frame (2) is provided with several supporting components (4) located at the bottom of the sunken box (1).
3. The sunken toilet prefabricated raised structure according to claim 2, characterized in that, The supporting component (4) is a lifting metal bracket.
4. The sunken toilet prefabricated raised structure according to claim 3, characterized in that, The lifting metal bracket is an aluminum alloy bracket with a threaded adjustment structure.
5. The sunken bathroom prefabricated raised structure according to any one of claims 1 to 4, characterized in that, The lightweight overhead panel (3) is an aluminum honeycomb panel.
6. The sunken toilet prefabricated raised structure according to claim 5, characterized in that, The lightweight raised slab (3) is covered with a bathroom floor finish layer (5).
7. The sunken toilet prefabricated raised structure according to claim 6, characterized in that, A waterproof sealing layer is provided at the joints between the lightweight overhead panels (3) and at the joints between the lightweight overhead panels (3) and the inner walls of the sunken box (1).
8. The sunken toilet prefabricated raised structure according to claim 7, characterized in that, The bathroom floor finish layer (5) is provided with at least one floor maintenance opening and a cover plate that matches the floor maintenance opening.
9. The sunken toilet prefabricated raised structure according to claim 8, characterized in that, The location and size of the ground maintenance opening are configured to allow the removal of at least one of the lightweight overhead panels (3) below it.
10. The sunken toilet prefabricated raised structure according to claim 9, characterized in that, Near the lowest point of the bottom of the sunken box (1), there is a water collector and a secondary drain outlet connected to the drainage pipe.