Waterproof floor

Abstract

The invention belongs to the technical field of decorative boards, and particularly relates to a waterproof floor. Through the structural design of the tongues and the mortises and by means of the abutting relation between the second tongues and the first mortises, the tenon hooks of the first tongues are tightly attached to the second mortises and the tenon buckles, a multi-level waterproof mechanism is formed, the overall sealing performance and the water seepage prevention capacity of the floor are remarkably improved, and the waterproof effect of the floor is improved. And the stability of the waterproof performance of the floor under the action of external force is enhanced.

Description

Technical Field

[0001] The present application belongs to the technical field of decorative panels, and specifically relates to a locking floor with good waterproof effect. Background Art

[0002] PVC foam flooring is a lightweight, environmentally friendly flooring material made from polyvinyl chloride (PVC) and calcium carbonate as its primary raw materials, supplemented with various auxiliary materials such as foaming agents, regulators, stabilizers, and lubricants. It is manufactured through a high-temperature extrusion process. Its microporous foam structure offers advantages such as light weight, excellent elasticity, sound insulation, and thermal insulation. Furthermore, due to the excellent chemical stability and natural waterproof properties of polyvinyl chloride, PVC foam flooring exhibits outstanding moisture and water resistance, making it widely used in flooring projects in residential, commercial, and outdoor spaces. It is particularly suitable for use in humid environments such as bathrooms, kitchens, and balconies.

[0003] For spliced ​​PVC foam flooring, although the PVC material itself has good waterproof properties, due to its modular splicing installation method, there are often certain gaps or loose contacts in the joints between the floorings. In actual use, especially in environments with high humidity or accumulated water, water can easily penetrate through these splicing gaps to the back of the floor. Long-term immersion may cause the base material to absorb water, swell, deform, or even mildew, thereby affecting the overall structural strength and service life of the floor. In addition, during daily walking or stepping, the water accumulated in the joints may be squeezed out, causing the risk of slipping, affecting the safety and comfort of use. Therefore, how to improve the sealing and connection stability of the splicing structure has become a key technical difficulty in improving the waterproof performance and practical value of such floors.

[0004] For example, patent application number 202322730769.6 discloses an improved locking laminate flooring. Its core innovation lies in the refined design of the locking structure at the edge of the floor, which significantly enhances the connection tightness and waterproofing ability between the panels. Specifically, the floor is provided with a locking tongue and a locking groove structure on two adjacent sides. The locking tongue includes an upper closing surface, a tongue tip, a lower jaw, and a tongue neck groove, which are connected in sequence. The locking groove is correspondingly provided with an upper closing surface, a slot hole, a lower jaw, and a slot edge. When installed, after the locking tongue is inserted into the locking groove, the upper and lower closing surfaces fit tightly together, the tongue tip is embedded in the slot hole and abuts against the upper arm of the slot hole, forming a stable support structure between the lower jaws, and the tongue neck groove forms a space to accommodate the slot edge. This achieves a multi-point force-bearing, multi-locking connection method, improving the integrity and displacement resistance of the floor splicing. This structural design not only enhances the mechanical strength and installation convenience of the floor, but also effectively improves the sealing performance of the splicing joint, playing a positive role in preventing water infiltration.

[0005] However, while this interlocking structure achieves a high degree of connection through the synergistic action of multiple contact surfaces, in practice, particularly in complex environments subject to frequent temperature and humidity fluctuations, external impacts, or prolonged submersion in water, there is still a risk of tiny gaps or seal failure at the interlocking joints. Once water seeps into the joints and into the flooring, it can cause the core material to absorb water and expand, loosen the structure, or even delaminate, compromising the floor's stability. Summary of the Invention

[0006] This application provides a floor with good waterproof effect, which is achieved through the following technical solutions: 19. The waterproof flooring of claim 18, wherein the first tongue and the second groove are provided on one side of the waterproof flooring, and the second tongue and the second groove are correspondingly provided on the other side; the first tongue and the second groove include an extension arm extending outward, and a tenon hook provided at the end of the extension arm and protruding upward; the upper surface of the extension arm, the floor side wall connected thereto, and the tenon hook together form a first water-blocking groove; the first tenon groove is formed at the position where the lower surface of the extension arm is connected to the floor side wall; a recessed portion is formed on the surface of the other side of the waterproof flooring, the upper edge of the recessed portion is provided with a tenon buckle extending downward and used to be embedded in the first water-blocking groove, the tenon buckle and the recessed portion enclose the second tenon groove; the lower edge of the recessed portion extends outward to form a second tongue and the second water-blocking groove is formed between the end of the second tongue and the recessed portion; when the end of the second tongue and the first groove are abutted, at least the upper surface of the tenon hook abuts against the second groove, and the tenon buckle abuts against the tenon hook.

[0007] Preferably, a sealing strip for preventing water from flowing into the second water-blocking groove is provided between the abutting surfaces of the first tongue and the second groove, and the sealing strip further comprises a water-blocking section pressed against the upper surface of the extension arm by the end of the tenon.

[0008] Preferably, the sealing strip further comprises a water-guiding section which is pressed against the surface of the recess by the lower surface of the first tongue and tenon, and the end of the water-guiding section is arranged obliquely downward from the lower surface of the first tongue and tenon toward the recess, and the end of the water-guiding section and the surface of the lower surface of the first tongue and tenon connected thereto which is away from the tenon hook side form an acute angle.

[0009] Preferably, a sealing strip is provided between the abutting surfaces of the second tongue and the first groove to prevent water in the second water blocking groove from transferring to the lower surface of the floor, and the sealing strip also includes a drainage section extending from the end of the second tongue to the second water blocking groove.

[0010] Preferably, the waterproof floor comprises a low foam layer and a high foam layer from the outside to the inside; the density of the low foam layer is greater than that of the high foam layer, and the first tongue and groove, the first tongue and groove, the second tongue and groove and the second tongue and groove are all distributed in the low foam layer.

[0011] Preferably, the waterproof floor further comprises a continuous reinforcement layer distributed at the connection interface between the low-foaming layer and the high-foaming layer, the continuous reinforcement layer is made of glass fiber material, and the continuous reinforcement layer is laid horizontally.

[0012] Preferably, a nailing groove is provided on the upper surface of the second tongue and tenon near the end side, and a limiting boss is formed between the nailing groove and the second water-blocking groove; when the first tongue and tenon is deformed under the action of external force, the lower surface of the first tongue and tenon is connected to the top of the limiting boss.

[0013] Preferably, along the direction of the tenon hook toward the first tenon groove, the lower surface of the first tongue and tenon includes a water control section and a buffer section connected in sequence, the position where the first tongue and tenon connect with the top of the limiting boss is distributed between the water control section and the buffer section, and the downward inclination angle of the water control section is greater than that of the buffer section.

[0014] Compared with the prior art, this application has the following beneficial effects: The present invention adopts the structural design of the tongue and groove, and utilizes the resistance relationship between the second tongue and the first groove to make the hook of the first tongue and the second groove and the tenon buckle fit tightly together, forming a multi-level waterproof mechanism. This not only significantly improves the overall sealing and water seepage resistance of the floor, but also enhances the stability of the waterproof performance of the floor under the action of external forces. Specifically, an upwardly protruding hook is provided at the end of the extension arm of the first tongue and the second tongue, which can achieve preliminary interception of infiltrating water. Under the action of the first tongue, the second tongue can form a tight contact between the hook and the second groove and the tenon buckle, further enhancing the sealing performance of the splicing part and preventing further water penetration. At the same time, a second water blocking groove is provided between the end of the second tongue and the recessed portion, which can be used to collect trace water seepage under the action of external force and guide it to spread evenly along the length of the floor to avoid concentrated water seepage. Since the air permeability of this area is better than that of the lower surface of the floor, it helps to evaporate and dissipate water. Finally, the end of the second tongue and the first groove fits tightly together, forming the last physical barrier, effectively preventing water from entering the lower surface of the floor.

[0015] By providing sealing strips between adjacent panels, this application effectively enhances the sealing and structural strength of the joints, reduces gaps, and thus prevents water infiltration. Specifically, the water-blocking section prevents water from overflowing the upper end of the tenon hook. The water-guiding section guides water quickly into the second water-blocking trough, preventing it from flowing along the lower surface of the first tongue and tenon to the second tongue and tenon area. Furthermore, the drainage section returns water flowing to the second tongue and tenon area to the second water-blocking trough, preventing it from further seeping down to the lower surface of the floor. These structures work together to effectively control the flow of water, forming a highly efficient anti-seepage system.

[0016] This application optimizes the foam density of waterproof flooring, placing the tongue and mortise in low-foam density areas. This effectively improves the stability and performance of the joint structure while maintaining the lightweight properties of the board. Furthermore, a continuous reinforcement layer is provided at the interface between the foam layer and the high-foam layer, further enhancing the overall mechanical strength of the board. This continuous reinforcement layer is laid horizontally to avoid affecting the load-bearing properties of the joint by arranging it along the thickness of the board. This prevents the tongue and mortise from pulling on the reinforcement layer under external forces, causing structural deformation or decreased stability. This achieves a harmonious balance between lightweighting and structural strength.

[0017] This application provides a nailing groove on the upper surface of the second tongue and a limiting boss between the nailing groove and the second water-blocking groove. The limiting boss not only effectively prevents water in the second water-blocking groove from entering the nailing groove area, reducing the risk of water accumulation near the second tongue, but also contacts the lower surface of the first tongue when it is deformed by external forces, forming a support structure, thereby improving the stability of the connection. Furthermore, the limiting boss effectively prevents water from flowing along the lower surface of the first tongue to the end of the second tongue or the nailing groove area, allowing water to be reliably directed to the first water-blocking groove, further enhancing the waterproof reliability of the connection. Furthermore, by rationally designing the inclination angles of the water control section and buffer section on the first tongue, water can still flow rapidly into the first water-blocking groove when the first tongue deforms, while ensuring structural strength. This enhances the system's drainage capacity and overall waterproof performance under complex stress conditions, improving the functional stability and environmental adaptability of the panel connection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following is a brief introduction to the accompanying drawings: Figure 1 This is a structural diagram of a waterproof floor; Figure 2 This is a schematic diagram of the splicing structure of the waterproof floor; Figure 3 This is a schematic structural diagram of the first sealing strip in the embodiment; Figure 4 Schematic diagram of the structure of the second sealing strip in the embodiment; Figure numerals: 100, first tongue and tenon, 110, extension arm, 120, tenon hook, 130, floor side wall, 140, first water blocking groove, 150, floor side wall, 160, water control section, 170, buffer section, 200, first tenon and groove, 300, second tongue and tenon, 310, second water blocking groove, 320, nailing groove, 330, limiting boss, 400, second tenon and groove, 410, recessed portion, 420, tenon buckle, 500a, sealing strip, 510a, water blocking section, 520a, water guiding section, 500b, sealing strip, 510b, drainage section, 600, low foam layer, 700, high foam layer, 800, continuous reinforcement layer. DETAILED DESCRIPTION

[0019] The present application will be further described below in the form of specific embodiments. Those skilled in the art will be able to implement the present application based on these descriptions. In addition, the embodiments of the present application involved in the following description are generally only embodiments of a portion of the present application, rather than all embodiments. Therefore, based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making any creative efforts should fall within the scope of protection of the present application. Example 1

[0020] This embodiment discloses a waterproof floor, which is provided with a first tongue and tenon 100 and a first tenon groove 200 on one side of the waterproof floor, and a second tongue and tenon 300 and a second tenon groove 400 on the other side; the first tongue and tenon 100 includes an outwardly extending extension arm 110, and a tenon hook 120 provided at the end of the extension arm 110 and protruding upward; the upper surface of the extension arm 110, the floor side wall 130 connected thereto, and the tenon hook 120 together form a first water-blocking groove 140; the first tenon groove 200 is formed at the position where the lower surface of the extension arm 110 connects to the floor side wall 150. A recessed portion 410 is formed on the surface of the other side of the waterproof floor. The upper edge of the recessed portion 410 is provided with a mortise 420 extending downward and used to be embedded in the first water-blocking groove 140. The mortise 420 and the recessed portion 410 enclose a second mortise 400; the lower edge of the recessed portion 410 extends outward to form a second tongue 300, and a second water-blocking groove 310 is formed between the end of the second tongue 300 and the recessed portion 410; when the end of the second tongue 300 abuts against the first mortise 200, at least the upper surface of the mortise hook 120 abuts against the second mortise 400, and the mortise 420 abuts against the mortise hook 120.

[0021] To enhance the waterproof performance of the waterproof flooring of this embodiment, a sealing strip 500a is provided between the abutting surfaces of the first tongue and groove 100 and the second groove 400 to prevent water from flowing into the second water-blocking groove 310. The sealing strip 500a also includes a water-blocking section 510a, which is pressed against the upper surface of the extension arm 110 by the end of the tenon 420, and a water-guiding section 520a, which is pressed against the surface of the recessed portion 410 by the lower surface of the first tongue and groove 100. In this embodiment, the end of the water-guiding section 520a is arranged obliquely downward from the lower surface of the first tongue and groove 100 toward the recessed portion 410, forming an acute angle with the end of the water-guiding section 520a and the surface of the lower surface of the first tongue and groove 100 connected thereto, away from the tenon hook 120. In addition, a sealing strip 500 b is provided between the abutting surfaces of the second tongue and groove 300 and the first tongue and groove 200 to prevent water in the second water blocking groove 310 from transferring to the lower surface of the floor, and the sealing strip 500 b also includes a drainage section 510 b extending from the end of the second tongue and groove 300 to the second water blocking groove 310 .

[0022] During use, the first water-blocking groove 140 provides a preliminary interception of infiltrating water. Furthermore, the tight contact between the first tongue and groove 100, the second groove 400, and the sealing strip 500a enhances the sealing performance of the joint and prevents further water infiltration. The second water-blocking groove 310 collects trace amounts of water that flow through the first tongue and groove 100 under external forces and evenly distributes it along the length of the floor, preventing concentrated water from seeping downward. The end of the second tongue and groove 300, the first groove 200, and the sealing strip 500b fit tightly together, forming a final physical barrier that effectively prevents water from entering the floor's lower surface. Furthermore, the drainage section 510b guides water from the end of the second tongue and groove 300 to the second water-blocking groove 310, further enhancing the overall waterproofing effect. Example 2

[0023] This embodiment discloses a waterproof floor, which has the following differences from the first embodiment: To enhance the strength of the waterproof flooring, this embodiment comprises, from the outside inward, a low-foam layer 600 and a high-foam layer 700. The low-foam layer 600 has a greater density than the high-foam layer 700, and the first tongue and groove 100, first tenon and groove 200, second tongue and groove 300, and second tenon and groove 400 are all located within the low-foam layer 600. This embodiment optimizes the foam density of the waterproof flooring, placing the tongue and groove in low-foam density areas. While maintaining the lightweight nature of the board, this effectively enhances the stability and performance of the joint structure. Furthermore, the waterproof flooring includes a continuous reinforcement layer 800, located at the interface between the low-foam layer 600 and the high-foam layer 700. This continuous reinforcement layer 800 is made of fiberglass and is laid horizontally. The continuous reinforcement layer 800 is laid horizontally to avoid being arranged along the thickness direction of the board and affecting the stress-bearing performance of the connection parts, thereby preventing the tongue or mortise from pulling the continuous reinforcement layer 800 under the action of external forces, causing structural deformation or reduced stability, thereby achieving the coordination and unity of lightweight and structural strength. In addition, this embodiment also provides a double-layer weather-resistant layer on the surface of the waterproof floor, and the weather-resistant layer is composed of an acrylic acid-styrene-acrylate copolymer material. By providing this weather-resistant layer, not only can the weather resistance and anti-ultraviolet aging performance of the floor surface be effectively improved, but also its color retention rate during long-term use can be significantly enhanced. Furthermore, during the preparation process of the board of this embodiment, by embossing and polishing the surface of the weather-resistant layer, a realistic wood grain effect can be formed, thereby ensuring the functionality of the product while improving its decorative aesthetics and surface texture. Example 3

[0024] This embodiment discloses a waterproof floor, which differs from the embodiment 2 in the following ways: To enhance the strength of the waterproof floor, a nailing groove 320 is provided on the upper surface of the second tongue 300 near the end. A limiting boss 330 is formed between the nailing groove 320 and the second water-blocking groove 310. When the first tongue 100 is deformed by an external force, the lower surface of the first tongue 100 contacts the top of the limiting boss 330. By providing the nailing groove 320 on the upper surface of the second tongue 300 and the limiting boss 330 between the nailing groove 320 and the second water-blocking groove 310, the limiting boss 330 not only effectively prevents water in the second water-blocking groove 310 from entering the nailing groove 320 area, reducing the risk of water accumulation near the second tongue 300, but also contacts the lower surface of the first tongue 100 when it is deformed by an external force, forming a support structure and thereby enhancing the stability of the connection. In addition, the limiting boss 330 can also effectively prevent moisture from flowing along the lower surface of the first tongue and tenon 100 to the end of the second tongue and tenon 300 or the nailing groove 320 area, so that the water can be reliably guided to the first water-blocking groove 310, thereby further improving the waterproof reliability of the connection part.

[0025] In this embodiment, along the direction from the tenon hook 120 toward the first tenon groove 200, the lower surface of the first tongue 100 includes a water control section 160 and a buffer section 170 connected in sequence. The point where the first tongue 100 meets the top of the limiting boss 330 is located between the water control section 160 and the buffer section 170, and the water control section 160 is tilted downward at a greater angle than the buffer section 170. By rationally designing the tilt angles of the water control section 160 and the buffer section 170 on the first tongue 100, water can still flow rapidly into the first water blocking groove 310 even when the first tongue 100 deforms, while ensuring structural strength. This enhances the system's drainage capacity and overall waterproof performance under complex stress conditions, and improves the functional stability and environmental adaptability of the plate connection structure.

[0026] During use, when the first tongue and groove 100 deforms downward under pressure, a portion of the water flowing down the lower surface of the first tongue and groove 100 can flow along the water-guiding section 520a to the recessed portion 410, collecting in the second water-blocking groove 310. The remaining portion, based on the connection between the limiting boss 330 and the water-control section 160, flows into the second water-blocking groove 310. This structural design effectively prevents water from flowing along the lower surface of the first tongue and groove 100 through the buffer section 170 to the second tongue and groove 300, thereby preventing water from flowing into the lower surface of the floor, further improving the waterproof performance and structural safety of the connection.

Claims

1. A waterproof floor, wherein one side of the waterproof floor is provided with a first tongue and a first groove (200), and the other side is correspondingly provided with a second tongue and a second groove (400); characterized in that: The first tongue and tenon (100) comprises an outwardly extending extension arm (110), and a tenon hook (120) provided at the end of the extension arm (110) and protruding upward; the upper surface of the extension arm (110), the floor side wall (130) connected thereto and the tenon hook (120) together form a first water blocking groove (140); the first tenon groove (200) is formed at the position where the lower surface of the extension arm (110) is connected to the floor side wall (150); a recessed portion (410) is formed on the surface of the other side of the waterproof floor, and the upper edge of the recessed portion (410) is provided with a downwardly extending portion for being built into the The first water blocking groove (140) has a tenon buckle (420), the tenon buckle (420) and the recessed portion (410) enclose forming the second tenon groove (400); the lower edge of the recessed portion (410) extends outward to form a second tongue tenon (300), and a second water blocking groove (310) is formed between the end of the second tongue tenon (300) and the recessed portion (410); when the end of the second tongue tenon (300) abuts against the first tenon groove (200), at least the upper surface of the tenon hook (120) abuts against the second tenon groove (400), and the tenon buckle (420) abuts against the tenon hook (120).

2. The waterproof floor according to claim 1, characterized in that: A sealing strip (500a) for preventing water from flowing into the second water-blocking groove (310) is provided between the abutting surfaces of the first tongue (100) and the second tongue groove (400), and the sealing strip (500a) further comprises a water-blocking section (510a) pressed against the upper surface of the extension arm (110) by the end of the tenon buckle (420).

3. The waterproof floor according to claim 2, characterized in that: The sealing strip (500a) further comprises a water-guiding section (520a) pressed against the surface of the recessed portion (410) by the lower surface of the first tongue and tenon (100), and an end portion of the water-guiding section (520a) is arranged to be inclined downward from the lower surface of the first tongue and tenon (100) toward the recessed portion (410), and an acute angle is formed between the end portion of the water-guiding section (520a) and the lower surface of the first tongue and tenon (100) connected thereto, the surface on the side away from the tenon hook (120).

4. The waterproof floor according to claim 1, characterized in that: A sealing strip (500b) is provided between the abutting surfaces of the second tongue and groove (300) and the first tongue and groove (200) to prevent water in the second water blocking groove (310) from being transferred to the lower surface of the floor, and the sealing strip (500b) further comprises a drainage section (510b) extending from the end of the second tongue and groove (300) toward the second water blocking groove (310).

5. The waterproof floor according to claim 1, characterized in that: The waterproof floor comprises, from the outside to the inside, a low-foaming layer (600) and a high-foaming layer (700); the low-foaming layer (600) has a higher density than the high-foaming layer (700), and the first tongue and groove (100), the first tongue and groove (200), the second tongue and groove (300), and the second tongue and groove (400) are all distributed in the low-foaming layer (600).

6. The waterproof floor according to claim 5, characterized in that: The waterproof floor further comprises a continuous reinforcement layer (800) distributed at the connection interface between the low foaming layer (600) and the high foaming layer (700), the continuous reinforcement layer (800) being made of glass fiber material and being laid horizontally.

7. The waterproof floor according to claim 1, characterized in that: A nailing groove (320) is provided on one side of the upper surface of the second tongue and tenon (300) near the end, and a limiting boss (330) is formed between the nailing groove (320) and the second water-blocking groove (310); when the first tongue and tenon (100) is deformed under the action of an external force, the lower surface of the first tongue and tenon (100) is in contact with the top of the limiting boss (330).

8. The waterproof floor according to claim 7, characterized in that: Along the direction from the tenon hook (120) to the first tenon groove (200), the lower surface of the first tongue (100) comprises a water control section (160) and a buffer section (170) connected in sequence, the position where the first tongue (100) meets the top of the limiting boss (330) is distributed between the water control section (160) and the buffer section (170), and the downward inclination angle of the water control section (160) is greater than that of the buffer section (170).

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