A hardware bathtub with integrated non-slip texture
By designing an integrated anti-slip texture on the bottom of the metal bathtub, using a gradient density of circular raised units and micron-level sandblasting, the traditional bathtub slip and cleaning problems are solved, achieving a bathtub design that is highly effective in preventing slipping, comfortable, and aesthetically pleasing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN XIJIAN SMART HOME CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-23
Smart Images

Figure CN224387336U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a bathtub, specifically a metal bathtub with an integrated anti-slip texture. Background Technology
[0002] Bathtubs, as common bathing fixtures in modern bathrooms, are widely used in homes, hotels, and health and wellness facilities. Traditional bathtubs are mostly made of ceramic, acrylic, or metal composite materials, and their surfaces are generally smooth. While they are aesthetically pleasing and easy to clean, they pose a significant safety hazard, especially when wet, as users are prone to slipping at the bottom of the tub.
[0003] To address the slip problem, current technologies often involve laying anti-slip mats or creating shallow textured surfaces at the bottom of the bathtub. While anti-slip mats can increase the coefficient of friction to some extent, they are prone to aging and deformation, are difficult to clean, and easily become breeding grounds for dirt and grime, affecting both user experience and aesthetics. Furthermore, fitted or interlocking anti-slip mats may create gaps with the bathtub body, leading to water accumulation, bacterial growth, and a lower level of hygiene in the bathroom.
[0004] On the other hand, some products achieve anti-slip effects by setting simple flat stripes or grid-like protrusions on the bottom of the bathtub. However, the depth and density design of these anti-slip structures are usually relatively simple and cannot adapt to the force distribution needs of different usage areas. Slipping problems may still occur, especially in the drain area. In addition, a rough or abrupt surface texture can easily cause discomfort such as foot irritation, affecting the user's bathing comfort.
[0005] Therefore, how to design a metal bathtub with good anti-slip properties, a one-piece molded structure, and at the same time take into account the convenience of cleaning and the comfort of use has become one of the technical problems that urgently need to be solved in this field. Summary of the Invention
[0006] To address the aforementioned issues, this utility model provides a metal bathtub with an integrated anti-slip texture. By incorporating an integrated anti-slip raised dot structure, it effectively overcomes the shortcomings of existing technologies.
[0007] This utility model is achieved through the following technical solution: a metal bathtub with an integrated anti-slip texture, comprising:
[0008] The bathtub body has a receiving cavity inside, and the bottom surface of the receiving cavity is provided with an integrally formed anti-slip structure, the anti-slip structure including:
[0009] Multiple circular raised units are evenly distributed in the bottom area of the bathtub;
[0010] The multiple circular protruding units are arranged in a gradient density pattern on the bottom area of the bathtub, with a high-density area near the drain outlet to enhance the anti-slip effect of that area.
[0011] As a preferred technical solution, the diameter of the circular protrusion unit is 30mm, and the spacing between the units is 25mm.
[0012] As a preferred technical solution, the surface of the anti-slip area at the bottom of the bathtub is treated with micron-level sandblasting, and the surface roughness Ra is 3.2μm.
[0013] As a preferred technical solution, the bathtub body is an integral structure formed by thermoforming process.
[0014] As a preferred technical solution, the bathtub body is made of cast-grade acrylic sheet with a thickness of 4 to 6 mm and an MMA content of not less than 98%.
[0015] As a preferred technical solution, the bathtub is manufactured by vacuum forming process.
[0016] As a preferred technical solution, the bottom of the bathtub body is provided with a pre-formed mounting hole for fixing the stainless steel drainage component, and an EPDM sealing ring is provided in the mounting hole to improve the sealing performance.
[0017] As a preferred technical solution, the surface of the bathtub is provided with a UV-curable protective coating with a thickness of 40 to 60 μm.
[0018] As a preferred technical solution, the plurality of circular protrusion units include a first circular protrusion group and a second circular protrusion group, wherein the first circular protrusion group and the second circular protrusion group are arranged alternately side by side.
[0019] The beneficial effects of this utility model are: This utility model adopts an integrated circular convex structure, combined with a gradient layout of dense areas, so that users can obtain higher friction support when standing or moving in a wet environment; the measured wet anti-slip coefficient (COF) can reach 0.85, which is significantly better than traditional bathtub products, effectively preventing slip accidents, and is especially suitable for the elderly, children and other people who are prone to falls.
[0020] The anti-slip texture of this utility model is manufactured directly as an integral part of the bathtub body during the molding stage, eliminating the need for additional pasting or assembly of anti-slip mats. This eliminates the risk of dirt accumulation in gaps, improves cleaning efficiency by more than 60%, and avoids odors or bacterial hazards caused by the accumulation of mold and residues, which is in line with the modern bathroom "seamless hygiene" design concept.
[0021] The anti-slip raised dot design of this utility model meets the comfort requirements of the sole of the foot. Its rounded shape is coordinated and unified with the overall curved lines of the bathtub. While ensuring functionality, it maintains a simple and modern appearance, does not hurt the feet, and does not affect the user experience. It has good user acceptance and aesthetic value. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0024] Figure 2 This is a top view of the present invention;
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. Bathtub body; 2. Drain outlet; 3. First circular protrusion group; 4. Second circular protrusion group; 5. Receiving cavity. Detailed Implementation
[0027] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.
[0028] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.
[0029] like Figure 1 and Figure 2As shown, this utility model provides a metal bathtub with an integrated anti-slip texture. In specific implementation, the bathtub body 1 is an integral structure, integrally formed using a thermoforming process. The bathtub body 1 preferably uses a casting-grade acrylic sheet with a thickness of 4 to 6 mm. The MMA monomer content of the acrylic sheet is not less than 98% to ensure the material's mechanical strength, chemical resistance, and thermoforming performance. During the thermoforming process, the pretreated acrylic sheet is heated to between 160°C and 180°C in an infrared heating furnace and placed into a mold for vacuum forming. During the forming process, the mold closing pressure is maintained between 0.6 and 0.8 MPa, the vacuum degree is not higher than -95 kPa, and the pressure holding time is 8 to 12 minutes to ensure that the anti-slip structure can completely replicate the mold structure features. The cooling process uses a combination of natural cooling and water cooling to control the geometric deformation of the bathtub.
[0030] The bathtub body 1 has an inner cavity 5 for holding water and accommodating the user. The bottom surface of the cavity 5 is integrally formed with an anti-slip structure, which includes multiple circular raised units. Preferably, these circular raised units are divided into a first circular raised unit 3 and a second circular raised unit 4, arranged alternately to form a uniformly distributed and staggered anti-slip array structure. Each circular raised unit is shaped like a frustum or near-spherical protrusion, with a preferred diameter of 30mm. The distance between any two adjacent circular raised units is controlled at approximately 25mm. This size design has been verified through foot contact testing, providing good frictional support without affecting foot comfort.
[0031] The multiple circular raised units are laid out along the bottom of the bathtub, but the density varies in different areas to achieve a gradient density functional optimization design. Specifically, the circular raised units near the drain outlet 2 have a higher density, approximately 30% higher than in other areas, forming a locally high-density area. This arrangement helps enhance the stability and grip of the drainage area, effectively reducing the risk of slipping when standing up.
[0032] In addition, to further improve the anti-slip performance of the anti-slip structure in a wet environment, the surface of the anti-slip area on the bottom of the bathtub is treated with micron-level sandblasting, and the surface roughness is controlled at Ra value of 3.2μm. The sandblasting treatment not only enhances the coefficient of friction, but also improves the tactile feedback of the foot, resulting in higher wet anti-slip performance in actual use. The measured wet COF coefficient reaches 0.85, which is better than the average level of existing commercially available ordinary bathtub products.
[0033] To enhance overall durability and ease of cleaning, the bathtub body 1 is further coated with a UV-cured protective coating. This coating, with a thickness controlled between 40 and 60 μm, exhibits excellent wear resistance and weather resistance, while also being resistant to yellowing and easy to clean. The anti-slip structure is molded in one piece, eliminating the need for subsequent splicing or assembly, thus avoiding the problem of dirt accumulation in the gaps of traditional anti-slip mats and significantly improving cleaning efficiency and hygiene.
[0034] The bottom of the bathtub body 1 is also pre-formed with mounting holes for installing stainless steel drainage components. An EPDM sealing ring is installed inside these holes to ensure good sealing performance of the drainage components during long-term use, preventing leaks and improving the overall reliability and practicality of the product. The drain outlet 2 is preferably located at the center of the densely distributed anti-slip structure area, forming a reasonable functional zone with the area of varying anti-slip density. This ensures both drainage efficiency and anti-slip safety for the user's feet.
[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.
Claims
1. A metal bathtub with an integrated anti-slip texture, characterized in that, include: A bathtub body (1) has a receiving cavity (5) inside. The bottom surface of the receiving cavity (5) is provided with an integrally formed anti-slip structure, which includes: Multiple circular raised units are evenly distributed in the bottom area of the bathtub; The multiple circular protrusion units are arranged in a gradient density pattern on the bottom area of the bathtub, with a high-density area near the drain outlet (2) to enhance the anti-slip effect of the area.
2. The metal bathtub with integrated anti-slip texture according to claim 1, characterized in that: The diameter of the circular protrusion unit is 30mm, and the spacing between the units is 25mm.
3. The metal bathtub with integrated anti-slip texture according to claim 1, characterized in that: The surface of the anti-slip area at the bottom of the bathtub is treated with micron-level sandblasting, and the surface roughness Ra is 3.2μm.
4. The metal bathtub with integrated anti-slip texture according to claim 1, characterized in that: The bathtub body (1) is an integral structure formed by thermoforming process.
5. The metal bathtub with integrated anti-slip texture according to claim 1, characterized in that: The bathtub body (1) is made of cast-grade acrylic sheet with a thickness of 4 to 6 mm and an MMA content of not less than 98%.
6. The metal bathtub with integrated anti-slip texture according to claim 1, characterized in that: The bathtub is manufactured using a vacuum forming process.
7. The metal bathtub with integrated anti-slip texture according to claim 1, characterized in that: The bottom of the bathtub body (1) is provided with a pre-formed mounting hole (6) for fixing the stainless steel drainage component. An EPDM sealing ring (7) is provided in the mounting hole (6) to improve the sealing performance.
8. The metal bathtub with integrated anti-slip texture according to claim 1, characterized in that: The surface of the bathtub is provided with a UV-cured protective coating (8) with a thickness of 40 to 60 μm.
9. The metal bathtub with integrated anti-slip texture according to claim 1, characterized in that: The multiple circular protrusion units include a first circular protrusion group (3) and a second circular protrusion group (4), which are arranged side by side in an alternating manner.