Sink and countertop seamless installation
By installing sloping supports and applying adhesive between the marble countertop and the sink, the complex installation of the washbasin is solved, achieving the effects of simplified installation and reduced costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI NAI INNOVATIVE MATERIALS SANITARY WARE CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-14
AI Technical Summary
The installation of existing washbasins requires precise milling of the installation contour and depth, which is time-consuming and difficult.
The marble countertop features a rectangular groove and an inner countertop support slope. The washbasin has a sink mounting slope at the top, which is used for support and fixed with glue, simplifying the installation process.
It simplifies the installation process of the washbasin, reduces installation costs, minimizes gaps and visual differences, and facilitates cleaning.
Smart Images

Figure CN224495299U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of washbasin technology, specifically to a seamless installation of a sink and countertop. Background Technology
[0002] A washbasin, also known as a washbasin basin, is a sanitary ware product used in bathrooms and kitchens for washing face, hands, vegetables, and dishes. According to the installation method, it is divided into countertop basins and undermount basins. Countertop basins have various shapes and are easy to install, making them suitable for home use. Undermount basins are easy to clean but are more complex to install and are commonly found in public places. The mainstream materials include ceramic, stainless steel, and glass, among which ceramic is the most widely used due to its durability and cost-effectiveness.
[0003] However, the installation of existing washbasins requires workers to precisely mill the installation contour and the required depth, which is time-consuming and difficult. Therefore, it does not meet the current needs. In response, we have proposed a seamless installation method between the sink and the countertop. Utility Model Content
[0004] The purpose of this utility model is to provide a seamless installation of a sink and countertop, so as to solve the problems mentioned in the background art, such as the need for workers to precisely mill the installation outline and the required installation depth when installing a washbasin, which is time-consuming and difficult.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a sink and countertop seamless installation, comprising a marble countertop and a washbasin, wherein the surface of the marble countertop is provided with a rectangular groove, the size of the rectangular groove is consistent with the bottom size of the washbasin, the inner side of the rectangular groove is provided with a countertop support slope, and the top end face of the washbasin is provided with a sink installation slope, wherein the sink installation slope and the countertop support slope fit together and have the same inclination angle.
[0006] Preferably, the inclination angle between the countertop support slope and the marble countertop is between 30 and 60 degrees.
[0007] Preferably, the surface of the tabletop support slope is provided with a first glue-filling groove, and the inner side of the water tank mounting slope is provided with a second glue-filling groove.
[0008] Preferably, the first and second glue-filling tanks are flush at the height after the marble countertop and washbasin are installed, and the internal heights of the first and second glue-filling tanks are consistent.
[0009] Preferably, the upper surface of the inclined surface of the sink is provided with a glue-filling hole, the top of which is open and extends to the upper surface of the sink.
[0010] Preferably, the first glue-filling groove, the second glue-filling groove, and the glue-filling hole are filled with glue, which solidifies to form a reinforcing strip.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] This invention features a countertop support slope on the inner side of a rectangular groove on the surface of a marble countertop, and a sink installation slope on the outer side of the top of the sink. During sink installation, the countertop support slope supports the sink installation slope, simplifying the installation process. Furthermore, no hardware is required for fixing during installation, reducing costs. It also maintains a visually consistent height between the marble countertop and the sink, minimizing gaps and facilitating easy cleaning of the marble countertop. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a cross-sectional view of the washbasin of this utility model;
[0015] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;
[0016] Figure 4 This is a schematic diagram of the structure of the first glue-filling groove, the second glue-filling groove, and the glue-filling hole of this utility model.
[0017] In the diagram: 1. Marble countertop; 2. Washbasin sink; 3. Reinforcing strip; 4. Countertop support slope; 5. Sink installation slope; 6. First glue-filling groove; 7. Second glue-filling groove; 8. Glue-filling hole. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0019] like Figures 1 to 4 As shown, a seamless installation of a sink and countertop includes a marble countertop 1 and a washbasin 2. The surface of the marble countertop 1 has a rectangular groove, the size of which is the same as the bottom size of the washbasin 2. The inner side of the rectangular groove has a countertop support slope 4, and the top end face of the washbasin 2 has a sink installation slope 5. The sink installation slope 5 and the countertop support slope 4 fit together and have the same inclination angle. By setting the countertop support slope 4 inside the rectangular groove on the surface of the marble countertop 1 and the sink installation slope 5 outside the top of the washbasin 2, the countertop support slope 4 supports the sink installation slope 5 during the installation of the washbasin 2, simplifying the installation operation of the washbasin 2.
[0020] The angle between the countertop support slope 4 and the marble countertop 1 is between 30 and 60 degrees, which ensures the stability of the inclined countertop support slope 4 when supporting the sink 2, thereby preventing the sink 2 from falling down due to an excessively large angle of inclination of the countertop support slope 4.
[0021] The surface of the countertop support slope 4 is provided with a first glue-filling groove 6, and the inner side of the sink mounting slope 5 is provided with a second glue-filling groove 7. The first glue-filling groove 6 and the second glue-filling groove 7 are flush at the height after the marble countertop 1 and the sink 2 are installed, and the internal heights of the first glue-filling groove 6 and the second glue-filling groove 7 are consistent. The upper surface of the sink mounting slope 5 is provided with a glue-filling hole 8. The top of the glue-filling hole 8 is open and extends to the upper surface of the sink 2. The presence of the glue-filling hole 8 facilitates the injection of glue into the sink mounting slope 5 and the first glue-filling groove 6, and the marble countertop 1 and the sink 2 are bonded and fixed by the injected glue.
[0022] The first glue-filling groove 6, the second glue-filling groove 7, and the glue-filling hole 8 are filled with glue. After the glue solidifies, it forms a reinforcing strip 3. The solidified reinforcing strip 3 increases the connection strength between the marble countertop 1 and the washbasin 2. When the washbasin 2 is subjected to upward force, the solidified reinforcing strip 3 can provide resistance, thereby ensuring the connection strength between the marble countertop 1 and the washbasin 2.
[0023] Working principle: When installing the marble countertop 1 and washbasin 2, first determine the top dimensions of the washbasin 2 and the inclination angle of the inclined surface 5 on the top side. Then, excavate a rectangular groove on the surface of the marble countertop 1. After excavating the rectangular groove, use a beveled hole saw to grind the inner side of the rectangular groove. Then, process and shape the countertop support inclined surface 4 on the inner side of the rectangular groove. After the countertop support inclined surface 4 is shaped, excavate the first glue-filling groove 6. After the first glue-filling groove 6 is completed, install the washbasin 2 inside the rectangular groove. At this time, the upper surface of the washbasin 2 is flush with the upper surface of the marble countertop 1. The glue filling hole 8 at the top of the second glue filling tank 7 is used to fill the glue filling hole 8, the first glue filling tank 6, and the second glue filling tank 7 with the glue filling tube until the glue filling holes 8, 6, and 7 are completely filled. After the glue solidifies to form the reinforcing strip 3, the assembly of the marble countertop 1 and the washbasin 2 is completed. This simplifies the installation of the washbasin 2 and eliminates the need for hardware to fix it during installation, reducing installation costs. At the same time, it ensures a visual difference between the marble countertop 1 and the washbasin 2 and reduces the gap between the marble countertop 1 and the washbasin 2, making it easier to clean the marble countertop 1.
[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. Sink and countertop seamless installation, comprising a marble countertop (1) and a washbasin sink (2), characterized in that: The surface of the marble countertop (1) is provided with a rectangular recess, the size of the rectangular recess is consistent with the bottom size of the wash basin (2), the inner side of the rectangular recess is provided with a countertop supporting slope (4), the top end surface of the wash basin (2) is provided with a basin mounting slope (5), the basin mounting slope (5) and the countertop supporting slope (4) are mutually attached and the inclination angles are consistent.
2. A sink-to-deck seamless installation according to claim 1, wherein: The inclination angle between the countertop supporting slope (4) and the marble countertop (1) is thirty to sixty degrees.
3. The sink-to-countertop seamless installation of claim 1, wherein: The surface of the countertop supporting slope (4) is provided with a first glue filling groove (6), the inner side of the basin mounting slope (5) is provided with a second glue filling groove (7).
4. A sink-to-deck seamless installation according to claim 3, wherein: The first glue filling groove (6) and the second glue filling groove (7) are kept flush in height after the marble countertop (1) and the wash basin (2) are installed, and the inner heights of the first glue filling groove (6) and the second glue filling groove (7) are kept consistent.
5. A sink-to-deck seamless installation according to claim 4, wherein: The upper surface of the basin mounting slope (5) is provided with a glue filling hole (8), the top end of the glue filling hole (8) is an opening and extends to the upper surface of the wash basin (2).
6. A sink-to-deck seamless installation according to claim 5, wherein: The first glue filling groove (6), the second glue filling groove (7) and the glue filling hole (8) are filled with glue, and the glue forms a reinforced glue strip (3) after solidification.