Water tank table-board structure facilitating disassembly and assembly of water tank functional parts
By designing recessed threaded holes and a four-point balanced locking structure on the sink countertop, the problem of limited maintenance space for traditional sink functional components is solved, achieving a sink countertop structure that is convenient to maintain and hygienic and safe.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN TUSUO HOME EQUIPMENT CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-01
AI Technical Summary
Traditional sink components have limited space for maintenance, making maintenance difficult and costly. They are difficult to operate with conventional tools, and the maintenance process may damage the sealing structure.
The recessed threaded hole design raises the locking plane to the worktable level. The threaded hole does not penetrate the worktable, allowing for horizontal and visible operation. Combined with the positioning protrusions of the flange and connecting seat, a four-point balanced locking system is formed, and a smooth bolt is used for locking.
It expands the operating space for maintenance tools, reduces maintenance costs, avoids damage to the sealing layer caused by the complete disassembly of the sink, and ensures kitchen hygiene and safety.
Smart Images

Figure CN224186864U_ABST
Abstract
Description
A sink countertop structure that facilitates the assembly and disassembly of sink functional components Technical Field
[0001] This utility model relates to the field of sink technology, and in particular to a sink countertop structure that facilitates the assembly and disassembly of sink functional components. Background Technology
[0002] As a core functional component of modern kitchens, sinks are typically installed undermount to achieve a flat countertop. In traditional designs, the mounting holes for the water outlet are generally located on the rear edge of the countertop, secured with double-ended locking nuts and threaded fittings. However, this design presents a significant technical challenge: the recessed structure of the sink creates a high-density equipment layer against the wall behind it, reducing the vertical operating space in this area to less than 100mm after installation, making it difficult to access with conventional tools. When leaks occur, valves malfunction, or filters need replacement, maintenance personnel face multi-dimensional spatial constraints. They must overcome the limitations of the wrench's operating radius in the confined vertical space and the difficulty of nut positioning due to lateral blind spots. In practice, this often necessitates destructive removal of the sink itself for repairs, increasing the risk of countertop sealing failure and raising maintenance costs per visit. Therefore, further improvements are needed. Summary of the Invention
[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a sink countertop structure that facilitates the assembly and disassembly of sink functional components.
[0004] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a sink countertop structure that facilitates the assembly and disassembly of sink functional components, including a sink, a connecting and fixing base and a locking component;
[0005] The countertop of the water tank has a fixing hole; the countertop has a threaded hole that does not penetrate the upper surface around the fixing hole; the connecting fixing seat has a flange and a fixing cylinder; the fixing cylinder has an internal thread for connecting the water outlet function component; the flange has a connecting through hole, and the locking component passes through the connecting through hole and locks into the threaded hole.
[0006] Optionally, a connecting seat is provided below the platform; the fixing hole passes through the middle of the connecting seat, and the threaded hole is provided in the connecting seat.
[0007] Optionally, the connecting seat and the flange are provided with mutually compatible positioning holes and positioning protrusions.
[0008] Optionally, the flange is provided with two connection through holes and two positioning protrusions; the two connection through holes are located on opposite sides of the flange, and the two positioning protrusions are located on opposite sides of the flange.
[0009] Optionally, the two connecting through holes and the two positioning protrusions are distributed at a 90-degree angle along the circumference of the flange.
[0010] Optionally, the connecting seat is a circular flange seat located below the platform; the fixing hole passes through the center of the flange seat.
[0011] Optionally, the connecting base is a long strip-shaped connecting plate located below the countertop; the connecting plate is provided with multiple fixing holes corresponding to the countertop of the sink.
[0012] Optionally, the flange is provided with a sealing groove, and a sealing ring is embedded in the sealing groove.
[0013] Optionally, the locking element is a smooth bolt.
[0014] Optionally, the fixed cylinder is equipped with a threaded adapter.
[0015] The beneficial effects of this invention are as follows: The recessed threaded hole design raises the locking plane to the countertop operating level, transforming traditional vertical blind operation into visible horizontal operation, and expanding the operating space for maintenance tools to the effective stroke of a conventional wrench; the structure where the threaded hole does not penetrate the countertop effectively prevents liquid from seeping into the laminate substrate. This structure reduces later maintenance costs, avoids damage to the silicone sealant layer caused by disassembling the entire sink, and ensures the hygiene and safety level of the kitchen.
[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0018] Figure 1 is a structural schematic diagram of the sink countertop structure of this utility model;
[0019] Figure 2 is another structural schematic diagram of the sink countertop structure of this utility model;
[0020] Figure 3 is a schematic diagram showing the result of installing the water outlet function component on the sink countertop of this utility model.
[0021] Figure 4 is a structural schematic diagram of the connecting seat of the sink countertop structure of this utility model, which adopts a long strip-shaped connecting plate.
[0022] Explanation of key component symbols:
[0023] 10. Water tank; 11. Fixing hole; 12. Threaded hole; 13. Connecting seat; 14. Positioning hole; 20. Connecting fixing seat; 21. Flange; 22. Fixing cylinder; 23. Connecting through hole; 24. Positioning protrusion; 25. Sealing groove; 30. Locking part; 40. Water outlet function part; 50. Sealing ring. Detailed Implementation
[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0025] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.
[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are 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.
[0027] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0028] Example
[0029] Referring to Figures 1 to 3, the present invention proposes a sink 10 countertop structure that facilitates the assembly and disassembly of the sink 10 functional components, including a sink 10, a connecting and fixing base 20, and a locking component 30.
[0030] The countertop of the sink 10 has a fixing hole 11. The countertop has a threaded hole 12 that does not penetrate the upper surface around the fixing hole 11. The connecting fixing seat 20 is provided with a flange 21 and a fixing cylinder 22. The fixing cylinder 22 is provided with an internal thread for connecting the water outlet functional component 40. The flange 21 is provided with a connecting through hole 23. The locking component 30 passes through the connecting through hole 23 and is locked in the threaded hole 12.
[0031] In this invention, the recessed threaded hole 12 design raises the locking plane to the countertop operating level, transforming traditional vertical blind operation into visible horizontal operation. This expands the operating space for maintenance tools to the effective stroke of a conventional wrench. The fact that the threaded hole 12 does not penetrate the countertop effectively prevents liquid from seeping into the laminate substrate. This structure reduces subsequent maintenance costs, avoids damage to the silicone sealant layer caused by the complete disassembly of the sink 10, and ensures a high level of kitchen hygiene and safety.
[0032] In this embodiment, a connecting seat 13 is provided below the platform; a fixing hole 11 penetrates the middle of the connecting seat 13, and a threaded hole 12 is provided in the connecting seat 13. The lower extension structure of the connecting seat 13 forms a locally thickened load-bearing area.
[0033] Specifically, the connecting seat 13 and the flange 21 are provided with mutually compatible positioning holes 14 and positioning protrusions 24. After the protrusions are embedded in the positioning holes 14, they form circumferential limits, which improves the torsional strength of the flange 21 during the locking process and solves the problem of uneven wear of the sealing ring 50 caused by lateral forces in traditional structures.
[0034] Furthermore, the flange 21 is provided with two connecting through holes 23 and two locating protrusions 24; the two connecting through holes 23 are located on opposite sides of the flange 21, and the two locating protrusions 24 are located on opposite sides of the flange 21. The symmetrical arrangement of the two connecting through holes 23 and the two locating protrusions 24 forms a four-point balanced locking system. This structure improves the uniformity of the contact pressure distribution between the flange 21 and the platform, and significantly improves the long-term sealing stability compared to the traditional single-point locking method.
[0035] Preferably, the two connecting through holes 23 and the two positioning protrusions 24 are distributed at a 90-degree angle along the circumference on the flange 21, and the connection points distributed at 90° circumferentially form an orthogonal couple structure.
[0036] In some embodiments, as shown in Figures 1 to 3, the connecting seat 13 is a circular flange seat located below the countertop; the fixing hole 11 passes through the center of the flange seat. The annular uniform distribution structure ensures uniform radial force distribution. The circular flange seat can be welded separately or integrally formed on the back side of the countertop of the sink 10.
[0037] In some embodiments, as shown in Figure 4, the connecting plate 13 is a long strip-shaped connecting plate located below the countertop; the connecting plate is provided with multiple fixing holes 11 corresponding to the countertop of the sink 10. The long strip connecting plate and the multiple fixing holes 11 combine to form a modular installation platform, which allows the connecting plate 20 to be locked and fixed on the existing sink 10 platform by welding a single long strip connecting plate, thereby adapting to the existing sink 10 product for modification and upgrading.
[0038] In this embodiment, the flange 21 is provided with a sealing groove 25, and a sealing ring 50 is embedded in the sealing groove 25. The silicone rubber sealing ring 50 embedded in the sealing groove 25 forms a double sealing interface with the flange 21, effectively preventing liquid leakage along the fixing hole 11.
[0039] In this embodiment, the locking member 30 is a smooth bolt. The unthreaded shank of the smooth bolt allows the connecting fixing seat 20 to have a vertical travel space, facilitating the matching and locking of various lengths of water outlet functional components 40. After locking, the connecting fixing seat 20 can fit against the bottom surface of the connecting seat 13 for secure locking.
[0040] Preferably, the smooth bolt is a countersunk smooth bolt; the conical structure of the bolt optimizes the transmission angle of the locking force, and compared with the traditional hexagonal nut, the bolt head protrusion height is reduced, avoiding the risk of interference with components such as the water purifier filter element below.
[0041] In this embodiment, the fixed cylinder 22 is equipped with a threaded adapter. The threaded adapter provides internal connection threads of multiple diameters, allowing a single structure to be adapted to various mainstream water outlet functional components 40 on the market.
[0042] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.
Claims
1. A countertop structure for a sink (10) with easily detachable and assembleable functional components, characterized in that, The device includes a water tank (10), a connecting fixing seat (20), and a locking member (30). The surface of the water tank (10) is provided with a fixing hole (11). The surface is provided with a threaded hole (12) that does not penetrate the upper surface of the fixing hole (11). The connecting fixing seat (20) is provided with a flange (21) and a fixing cylinder (22). The fixing cylinder (22) is provided with an internal thread for connecting a water outlet functional component (40). The flange (21) is provided with a connecting through hole (23). The locking member (30) passes through the connecting through hole (23) and is locked in the threaded hole (12).
2. The sink (10) countertop structure according to claim 1, which facilitates the assembly and disassembly of the sink (10) functional components, is characterized in that: A connecting seat (13) is provided below the platform; the fixing hole (11) passes through the middle of the connecting seat (13), and the threaded hole (12) is provided in the connecting seat (13).
3. The sink (10) countertop structure according to claim 2, which facilitates the assembly and disassembly of the sink (10) functional components, is characterized in that: The connecting seat (13) and the flange (21) are provided with mutually compatible positioning holes (14) and positioning protrusions (24).
4. The sink (10) countertop structure according to claim 3, which facilitates the assembly and disassembly of the sink (10) functional components, is characterized in that: The flange (21) is provided with two connecting through holes (23) and two positioning protrusions (24); the two connecting through holes (23) are located on opposite sides of the flange (21), and the two positioning protrusions (24) are located on opposite sides of the flange (21).
5. The sink (10) countertop structure according to claim 4, which facilitates the assembly and disassembly of the sink (10) functional components, is characterized in that: Two connecting through holes (23) and two positioning protrusions (24) are distributed at a 90-degree angle along the circumference of the flange (21).
6. The sink (10) countertop structure according to claim 2, which facilitates the assembly and disassembly of the sink (10) functional components, is characterized in that: The connecting seat (13) is a circular flange seat below the platform; the fixing hole (11) passes through the middle of the flange seat.
7. The sink (10) countertop structure according to claim 2, which facilitates the assembly and disassembly of the sink (10) functional components, is characterized in that: The connecting seat (13) is a long strip-shaped connecting plate below the table; the connecting plate is provided with multiple fixing holes (11) corresponding to the table of the water tank (10).
8. The sink (10) countertop structure according to claim 1, which facilitates the assembly and disassembly of the sink (10) functional components, is characterized in that: The flange (21) is provided with a sealing groove (25), and a sealing ring (50) is embedded in the sealing groove (25).
9. The sink (10) countertop structure according to claim 1, which facilitates the assembly and disassembly of the sink (10) functional components, is characterized in that: The locking component (30) is a smooth bolt.
10. The sink (10) countertop structure according to claim 1, which facilitates the assembly and disassembly of the sink (10) functional components, is characterized in that: The fixed cylinder (22) is equipped with a threaded adapter.