Expansion and shrinkage resistant floor and wall panel fastener and its use

Abstract

The application relates to the field of floor wallboards, and particularly discloses an anti-expansion and anti-shrinkage floor wallboard buckle and application thereof. The anti-expansion and anti-shrinkage floor wallboard buckle comprises a first connecting part and a second connecting part, the first connecting part comprises a first flange and a second flange, and a first connecting groove is formed between the first flange and the second flange; the second connecting part comprises a connecting convex tooth matched with the first connecting groove, a first expansion gap is formed between the connecting convex tooth and the inner side wall of the first connecting groove, a second concave surface is formed on the second connecting part and located at the side of the connecting convex tooth close to the second flange, a second connecting groove matched with the second flange is formed between the connecting convex tooth and the second concave surface, and a second expansion gap is formed between the second flange and the inner side wall of the second connecting groove. The anti-expansion and anti-shrinkage floor wallboard buckle can be applied to floorboards or wallboards. The application has the effect of reducing the occurrence of warping or cracking between adjacent floor wallboards.

Description

Technical Field

[0001] This application relates to the field of flooring and wall panels, and more specifically, it relates to a flooring and wall panel snap-fit ​​type resistant to expansion and contraction and its application. Background Technology

[0002] Flooring or wall panels are common building materials, often made of solid wood, fiberboard, or plywood, used to cover and decorate floors or walls to give interiors greater comfort and aesthetics.

[0003] Common flooring or wall panels have connecting parts on opposite edges, allowing at least two panels to interlock and join together. The connecting parts typically include a tongue and a groove; the tongue of one panel inserts into the groove of another, thus achieving the interlocking of the two panels.

[0004] However, after installation, common flooring or wall panels are prone to expansion or contraction due to factors such as temperature and humidity. This can cause deformation of the tongue and groove, resulting in warping or cracks at the joint between two floorboards, affecting the aesthetics and normal use of the flooring or wall panels. Therefore, this issue needs to be addressed. Summary of the Invention

[0005] To reduce the occurrence of warping or cracking at the joints, this application provides a floor and wall panel snap-fit ​​type resistant to expansion and contraction and its application.

[0006] In a first aspect, this application provides a floor and wall panel snap-fit ​​design resistant to expansion and contraction, employing the following technical solution:

[0007] An expansion- and contraction-resistant floor and wall panel snap-fit ​​design includes a first connecting portion or a second connecting portion respectively disposed on opposite sides of a floor or wall panel. The first connecting portion of any floor or wall panel snaps into the second connecting portion of the other floor or wall panel. The first connecting portion includes a first flange and a second flange, and a first connecting groove is formed between the first flange and the second flange. The second connecting portion includes a connecting tooth that mates with the first connecting groove, and a first expansion gap exists between the connecting tooth and the inner sidewall of the first connecting groove. A second concave surface is formed on the second connecting portion, on the side of the connecting tooth closer to the second flange. A second connecting groove that mates with the second flange is formed between the connecting tooth and the second concave surface, and a second expansion gap is formed between the second flange and the inner sidewall of the second connecting groove.

[0008] By adopting the above technical solution, when laying floor or wall panels, the connecting protrusion is located in the first connecting groove and the second flange is located in the second connecting groove. That is, when viewed from the surface of the floor or wall panel, the connecting protrusion and the second flange overlap. When the floor or wall panel shrinks, the overlap between the connecting protrusion and the second flange reduces the possibility of cracks appearing between adjacent floor or wall panels, which would affect the laying effect and aesthetics.

[0009] When the floor or wall panel expands, the connecting protrusion expands and squeezes into the first expansion gap, and the second flange expands and squeezes into the second expansion gap. The first and second expansion gaps reduce the degree of deformation caused by mutual compression between adjacent floor or wall panels when the floor or wall panel expands, which helps to improve the aesthetics and performance of the floor or wall panel.

[0010] Preferably, the inner diameter of the first expansion gap or the second expansion gap in the horizontal direction is 0.2-0.3 mm.

[0011] Preferably, a first concave surface is formed between the first flange and the second flange and within the sidewall of the first connecting groove, a locking block is provided at the end of the second flange away from the first concave surface, and a snap-back part is provided on the connecting tooth to cooperate with the locking block.

[0012] By adopting the above technical solution, when the floor or wall panel shrinks, the connecting tooth shrinks, the snap-back part squeezes the locking block, and drives the locking block to tilt towards the second concave surface; the locking block ensures that when adjacent floor or wall panels shrink, the connecting tooth and the second flange are always in the overlapping part, reducing the possibility of cracks between adjacent floor or wall panels affecting the laying effect and aesthetics.

[0013] Preferably, the angle between the sidewall of the card block facing the first concave surface and the plane perpendicular to the floor or wall panel surface is 0°-70°.

[0014] By adopting the above technical solution, the contact surface between the locking block and the snap-back part is an inclined surface, which reduces the possibility of the snap-back part being squeezed and deformed when it squeezes the locking block.

[0015] Preferably, a shrinkage groove is formed between the side wall of the second flange facing the second concave surface and the side wall of the card block facing the second concave surface.

[0016] By adopting the above technical solution, when the snap-back part squeezes the card block, the card block tilts, thereby squeezing the shrinkage groove, reducing the inner diameter of the shrinkage groove. The shrinkage groove provides a certain deformation space for the card block, reducing the possibility of squeezing deformation between the card block and the second flange when the card block is squeezed and tilted.

[0017] Preferably, the connection between the first concave surface and the side wall of the first flange facing the second flange is an arc with a radius of 0.1-3mm in the vertical cross section; an inclined surface is provided between the side wall of the connecting tooth away from the second flange and the side wall of the connecting tooth facing the first concave surface, and the angle between the inclined surface and the surface of the floor or wall panel in the vertical cross section is 0°-70°; an inclined surface two that cooperates with the inclined surface one is provided on the side wall of the first flange near the second flange.

[0018] By adopting the above technical solution, when the floor or wall panel expands, the connecting protrusions can expand more easily and squeeze into the first expansion gap, reducing the possibility of deformation caused by the collision between the connecting protrusions and the first flange; the arc shape at the connection between the first concave surface and the first flange reduces the possibility of deformation and breakage between the first flange and the first concave surface after the connecting protrusions are squeezed into the first expansion gap and push up the first flange.

[0019] Preferably, a first concave surface is formed between the first flange and the second flange, and within the sidewall of the first connecting groove; a stepped portion is provided on the second flange, and one end of the connecting tooth near the first concave surface extends to the space between the stepped portion and the first flange; there is an angle of 30°-90° between the sidewall of the connecting tooth facing the second flange and a plane perpendicular to the surface of the floor or wall panel; and the connection between the sidewall of the connecting tooth facing the second flange and the second concave surface is an arc shape with a radius of 0.1-5mm in the vertical cross section.

[0020] By adopting the above technical solution, the stepped portion provides a support for the connecting protrusion, facilitating the installation of two adjacent floor or wall panels. The connecting protrusion extends between the stepped portion and the first flange. Even if the opening of the second connecting groove is located between the stepped portion and the first flange, when the floor or wall panel expands, the connecting protrusion can more easily squeeze into the first expansion gap, and the second flange and the stepped portion can more easily squeeze into the second expansion gap. At the same time, the arc between the connecting protrusion and the second concave surface reduces the possibility of deformation and breakage of the connecting protrusion and the second concave surface.

[0021] Preferably, the sidewall of the connecting tooth facing the first concave surface has an angle of 0-45° with the plane perpendicular to the surface of the floor or wall panel, and an inclined surface three is provided between the connecting tooth and the sidewall of the connecting tooth away from the second flange. The inclined surface three has an angle of 0°-70° with the surface of the floor or wall panel, and an inclined surface four is provided on the first flange to cooperate with the inclined surface three.

[0022] By adopting the above technical solution, the end of the connecting tooth near the first concave surface has a certain sharp angle, making it easier for the connecting tooth to expand and squeeze into the first expansion gap, reducing the possibility of deformation caused by the contact and collision between the connecting tooth and the first flange.

[0023] Secondly, this application provides a floor or wall panel with the aforementioned anti-expansion and anti-shrinkage floor / wall panel snap-fit ​​design, employing the following technical solution:

[0024] A floor or wall panel includes a board layer and an elastic layer, the board layer being bonded to the elastic layer, the sidewall of the elastic layer away from the board layer being coated with an adhesive, and the elastic layer being bonded to the ground or wall surface.

[0025] By adopting the above technical solutions, the possibility of deformation or cracks at the joint caused by expansion or contraction between adjacent floor or wall panels is reduced. The elastic layer provides a certain degree of shock absorption and noise reduction for the floor or wall panel, improving the performance and comfort. The elastic board is glued to the ground or wall, making the floor or wall panel easy to assemble and use.

[0026] Preferably, the elastic layer is made of a material including IXPE, XPE, EVA, and cork.

[0027] Preferably, the density of the elastic layer is 60 kg / m³. 3 -650 kg / m 3 .

[0028] By adopting the above technical solutions, the elastic layer can provide better shock absorption and noise reduction effects.

[0029] Preferably, the elastic layer and the board layer are bonded together by one of the following: polyurethane adhesive, water-based polyurethane adhesive, epoxy adhesive, EVA adhesive, and acrylic adhesive.

[0030] Preferably, the adhesive is a butyl rubber adhesive.

[0031] Preferably, the coating amount of the adhesive is 20 g / m². 2 -300g / m 2 .

[0032] By adopting the above technical solution, it is easy to firmly lay the elastic layer and board layer on the ground or wall.

[0033] In summary, this application has the following beneficial effects:

[0034] 1. In this application, the first expansion gap connecting tooth provides a certain deformation space, and the second expansion gap provides a certain deformation space for the second flange. When the floor or wall panel expands, the connecting tooth expands and is squeezed into the first expansion gap, and the second flange expands and is squeezed into the second expansion gap. This reduces the degree of deformation caused by mutual compression between adjacent floor or wall panels, which is beneficial to improving the aesthetics and performance of the floor or wall panel.

[0035] 2. In this application, when the floor or wall panel shrinks, the overlapping part of the connecting tooth and the second flange reduces the possibility of cracks appearing between adjacent floor or wall panels, which would affect the laying effect and aesthetics.

[0036] 3. The floor or wall panel of this application has an anti-expansion and anti-shrinkage snap-fit ​​design, which has the characteristics of stable installation and not easy deformation; the elastic layer provides a certain shock absorption and noise reduction effect for the floor or wall panel, improving the use effect and comfort; the elastic board is glued to the ground or wall, making the floor or wall panel easy to assemble and use. Attached Figure Description

[0037] Figure 1 This is a vertical cross-sectional schematic diagram of the floor in Embodiment 1 of this application, used to demonstrate the floor and wall panel snap-fit ​​type that resists expansion and contraction;

[0038] Figure 2 This is a cross-sectional schematic diagram in the vertical direction of the wall panel used to demonstrate the anti-expansion and anti-shrinkage floor wall panel snap-fit ​​in Embodiment 2 of this application.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Plate layer; 2. Elastic layer; 3. First connecting part; 31. First flange; 311. Inclined surface two; 312. Inclined surface four; 313. Inclined surface five; 32. Second flange; 321. Locking block; 322. Shrinkage groove; 323. Step part; 33. First concave surface; 34. First connecting groove; 4. Second connecting part; 41. Connecting tooth; 411. Inclined surface one; 412. Snap-back part; 413. Inclined surface three; 42. Second concave surface; 43. Second connecting groove; 5. First expansion gap; 6. Second expansion gap. Detailed Implementation

[0041] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. Example

[0042] Example 1

[0043] Reference Figure 1 An anti-expansion and anti-shrinkage floor and wall panel snap-fit ​​type includes a first connecting part 3 and a second connecting part 4 respectively disposed on two opposite side walls along the length of the floor.

[0044] Reference Figure 1 The first connecting portion 3 includes a first flange 31 and a second flange 32 disposed on the floor. A first concave surface 33 is formed between the first flange 31 and the second flange 32. A first connecting groove 34 is formed between the first flange 31, the first concave surface 33, and the second flange 32. The second connecting portion 4 includes a connecting tooth 41 disposed on the floor and engaging with the first connecting groove 34. A second concave surface 42 is formed on the floor near the second flange 32. A second connecting groove 43 engaging with the second flange 32 is formed between the connecting tooth 41 and the second concave surface 42.

[0045] Reference Figure 1 In the vertical section, the length of the second flange 32 is greater than that of the first flange 31. After the floor is laid, the connecting tooth 41 is inserted into the first connecting groove 34, and the second flange 32 is inserted into the second connecting groove 43. There is an overlap between the connecting tooth 41 and the second flange 32.

[0046] Reference Figure 1 A first expansion gap 5 exists between the sidewall of the connecting tooth 41 facing the first concave surface 33 and the first concave surface 33. When the floor expands, the connecting tooth 41 expands and squeezes into the first expansion gap 5. The inner diameter of the first expansion gap 5 in the floor length direction can be 0.2-3mm. In this embodiment, the inner diameter of the first expansion gap 5 in the horizontal direction is 2mm. An inclined surface 411 is provided between the upper surface of the connecting tooth 41 and the sidewall of the connecting tooth 41 facing the first concave surface 33. An angle E1 exists between the inclined surface 411 and the plane horizontal to the surface of the board. E1 can be 0-70°. In this embodiment, E1 is 30°. An inclined surface 311 that cooperates with the inclined surface 411 is provided at one end of the first flange 31 near the connecting tooth 41. When the floor expands, the inclined surface 411 makes the connecting tooth 41 present a certain entry angle, which reduces the possibility of the connecting tooth 41 colliding with the first flange 31 when it expands and squeezes into the first connecting groove 34.

[0047] Reference Figure 1When the connecting tooth 41 expands and is squeezed into the first connecting groove 34, the connecting tooth 41 lifts one end of the first flange 31. An inclined plane 5 313 ​​is provided between the upper surface of the first flange 31 and the sidewall of the first flange 31 facing the inclined plane 411. In this embodiment, the angle between the inclined plane 5 313 ​​and the plane horizontal to the surface of the board is 30°. The inclined plane 5 313 ​​reduces the possibility that the first flange 31 will protrude above the upper surface of the floor when it is lifted by the connecting tooth 41, ensuring the flatness of the floor surface and thus contributing to the aesthetics of the floor. In the vertical section, the connection between the sidewall of the first flange 31 facing the second flange 32 and the first concave surface 33 is arc-shaped, with a radius of 0.1-3mm. In this embodiment, the radius of the arc is 0.5mm. The arc-shaped connection reduces the possibility of breakage between the first flange 31 and the first concave surface 33 when it is lifted, ensuring the performance and service life of the floor.

[0048] Reference Figure 1 There is a second expansion gap 6 between the side wall of the second flange 32 facing the second concave surface 42 and the second concave surface 42. When the floor expands, the second flange 32 is squeezed into the second expansion gap 6. The inner diameter of the second expansion gap 6 in the length direction of the floor can be 0.2-3mm. In this embodiment, the inner diameter of the second expansion gap 6 in the length direction of the floor is 2mm.

[0049] Reference Figure 1 A locking block 321 is provided at the end of the second flange 32 away from the first concave surface 33. A latching portion 412 that engages with the locking block 321 is provided on the connecting tooth 41. The locking block 321 abuts against the latching portion 412. The angle between the side wall surface of the locking block 321 and the latching portion 412 and the plane perpendicular to the floor surface can be 0-70°. In this embodiment, the angle is 10°. When the connecting tooth 41 and the second flange 32 contract, the connecting tooth 41 and the locking block 321 come into contact and are squeezed, causing the locking block 321 to tilt towards the second concave surface 42. A contraction groove 322 is provided between the side wall surface of the locking block 321 facing the second concave surface 42 and the side wall surface of the second flange 32 facing the second concave surface 42. The contraction groove 322 can be a V-shaped groove or an arc-shaped groove. In this embodiment, the contraction groove 322 is a V-shaped groove. The shrinkage groove 322 reduces the possibility of compression deformation between the locking block 321 and the second flange 32 when the connecting protrusion 41 is squeezed and tilted. The locking block 321 ensures that there is always an overlap between the connecting protrusion 41 and the second flange 32, reducing the possibility of cracks appearing between adjacent floorboards when the floor shrinks.

[0050] The implementation principle of the anti-expansion and anti-shrinkage floor and wall panel snap-fit ​​method in this embodiment is as follows:

[0051] During installation, between two adjacent floorboards, the connecting protrusion 41 of one floorboard is inserted into the first connecting groove 34 of the other floorboard, and the second flange 32 of one floorboard is inserted into the second connecting groove 43 of the other floorboard.

[0052] When the floor expands, the connecting tooth 41 expands and squeezes into the first expansion gap 5. The first inclined surface 411 and the second inclined surface 311 abut against each other, lifting the first flange 31. The fifth inclined surface 313 reduces the possibility of the first flange 31 protruding from the upper surface of the floor. At the same time, the second flange 32 expands and squeezes into the second expansion gap 6.

[0053] When the floor contracts, the connecting tooth 41 and the second flange 32 contract, causing the snap-back part 412 to press against the locking block 321. The locking block 321 tilts towards the second connecting groove 43, and the inner walls of the contraction groove 322 move closer to each other, reducing the inner diameter.

[0054] Example 2

[0055] Reference Figure 2 The difference between this embodiment and embodiment 1 is that this embodiment discloses a floor wall panel snap-fit ​​type that is resistant to expansion and contraction, including a first connecting part 3 and a second connecting part 4 respectively disposed on opposite side walls in the width direction of the wall panel.

[0056] Reference Figure 2 The first connecting portion 3 includes a first flange 31 and a second flange 32 disposed on the wall panel. A first concave surface 33 is formed between the first flange 31 and the second flange 32. A first connecting groove 34 is formed between the first flange 31, the first concave surface 33, and the second flange 32. A step portion 323 is provided on the second flange 32 and located in the side wall of the first connecting groove 34. The second connecting portion 4 includes a connecting tooth 41 disposed on the wall panel and cooperating with the first connecting groove 34. A second concave surface 42 is located on the wall panel on the side of the connecting tooth 41 near the second flange 32. A second connecting groove 43 is formed between the connecting tooth 41 and the second concave surface 42, cooperating with the second flange 32.

[0057] Reference Figure 2 In the vertical section, the length of the second flange 32 is greater than that of the first flange 31. After the floor is laid, the end of the connecting tooth 41 near the first concave surface 33 is located between the step portion 323 and the first flange 31. The step portion 323 provides a support for the installation of the connecting tooth 41.

[0058] Reference Figure 2A first expansion gap 5 exists between the connecting tooth 41 and the first concave surface 33. When the wall panel expands, the connecting tooth 41 expands and squeezes into the first expansion gap 5. The inner diameter of the first expansion gap 5 in the width direction of the wall panel can be 0.2-3mm. In this embodiment, the inner diameter of the first expansion gap 5 in the width direction of the wall panel is 3mm. The angle between the side wall surface of the connecting tooth 41 facing the first concave surface 33 and the plane perpendicular to the surface of the wall panel is e1. The angle between the side wall surface of the connecting tooth 41 facing the second flange 32 and the plane perpendicular to the surface of the wall panel is e3. e1 can be 0-45°, and e3 can be 30-90°. In this embodiment, e1 is 13° and e3 is 80°. e1 and e3 make the entry angle of the connecting tooth 41 squeezing into the first expansion gap 5 acute, making it easier for the connecting tooth 41 to expand into the first expansion gap 5.

[0059] Reference Figure 2 An inclined surface 413 is provided between the side wall of the connecting tooth 41 away from the second flange 32 and the side wall of the connecting tooth 41 facing the first concave surface 33. An angle e2 exists between the inclined surface 413 and the plane parallel to the wall surface. e2 can be 0-70°; in this embodiment, e2 is 30°. An inclined surface 312 is provided on the first flange 31 to cooperate with the inclined surface 413. When the connecting tooth 41 expands and squeezes into the first expansion gap 5, the inclined surface 413 and the inclined surface 312 abut against each other, reducing the possibility of the connecting tooth 41 colliding with the first flange 31 and causing compression deformation. The expansion of the connecting tooth 41 pushes the first flange 31 away from the second flange 32. An inclined surface 313 is provided between the side wall surface of the first flange 31 away from the second flange 32 and the side wall surface of the first flange 31 facing the inclined surface 413. In this embodiment, the angle between the inclined surface 313 and the plane parallel to the wall panel surface is 30°. The inclined surface 313 reduces the possibility that the first flange 31 will protrude from the wall panel surface when the connecting tooth 41 pushes it up.

[0060] Reference Figure 2A second expansion gap 6 exists between the sidewall of the second flange 32 facing the second concave surface 42 and the second concave surface 42. When the wall panel expands, the second flange 32 and the step portion 323 expand and squeeze into the second expansion gap 6. The inner diameter of the second expansion gap 6 in the width direction of the wall panel can be 0.2-3mm. In this embodiment, the inner diameter of the second expansion gap 6 in the width direction of the wall panel is 1.5mm. After the step portion 323 expands, it pushes the connecting tooth 41 away from the second flange 32. In the vertical direction, the connection between the sidewall of the connecting tooth 41 facing the second flange 32 and the second concave surface 42 is arc-shaped. The radius of the arc can be 0.1-5mm. The arc-shaped connection helps to reduce the possibility of breakage between the connecting tooth 41 and the second concave surface 42. In this embodiment, the radius of the arc at the connection is 0.2mm.

[0061] The implementation principle of the anti-expansion and anti-shrinkage floor and wall panel snap-fit ​​method in this embodiment is as follows:

[0062] During installation, between two adjacent wall panels, the step portion 323 of one wall panel provides a support for the connecting tooth 41 of the other wall panel. When the wall panel expands, the connecting tooth 41 expands and is squeezed into the first expansion gap 5. The inclined surface 313 abuts against the inclined surface 412, lifting the first flange 31. The inclined surface 513 reduces the possibility of the first flange 31 protruding from the upper surface of the wall panel. At the same time, the second flange 32 and the step portion 323 expand and are squeezed into the second expansion gap 6.

[0063] Example 3

[0064] Reference Figure 1 A type of flooring with anti-expansion and shrinkage interlocking panels as described in Example 1 includes a board layer 1 and an elastic layer 2. The board layer 1 is a solid wood board, and the elastic layer 2 is IXPE foam. The board layer 1 and the elastic layer 2 are bonded together with a water-based polyurethane adhesive. The sidewall of the elastic layer 2 away from the board layer 1 is coated with butyl rubber adhesive at a coating amount of 200 g / m². 2 The elastic layer 2 is bonded to the ground so that the board layer 1 can be laid horizontally on the ground.

[0065] One application of this embodiment is the implementation principle of the anti-expansion and shrinkage floor wall panel interlocking floor in Embodiment 1: the lower surface of the board layer 1 is bonded to the elastic layer 2 with water-based polyurethane adhesive, the lower surface of the elastic layer 2 is coated with butyl rubber adhesive and bonded to the ground, so that the board layer 1 is laid on the ground. During the laying, two adjacent board layers 1 are interlocked and snapped together by the expansion and shrinkage floor wall panel interlocking.

[0066] Example 4

[0067] Reference Figure 2The difference between this embodiment and Embodiment 3 is that this embodiment discloses a wall panel using the anti-expansion and shrinkage floor wall panel snap-fit ​​type of Embodiment 2, including a board layer 1 and an elastic layer 2. The board layer 1 is plywood, and the elastic layer 2 is cork. The board layer 1 and the elastic layer 2 are bonded together with acrylic adhesive. The sidewall of the elastic layer 2 away from the board layer 1 is coated with butyl rubber adhesive at a coating amount of 20g / m². 2 The elastic layer 2 is glued to the wall surface so that the board layer 1 can be laid vertically on the wall surface.

[0068] One application of this embodiment is the implementation principle of the anti-expansion and shrinkage floor wall panel snap-fit ​​wall panel in embodiment 2: the lower surface of the board layer 1 is bonded to the elastic layer 2 with acrylic adhesive, the lower surface of the elastic layer 2 is coated with butyl rubber adhesive and bonded to the wall surface, so that the board layer 1 is laid on the wall surface. During the laying, two adjacent board layers 1 are interlocked and snapped together by the anti-expansion and shrinkage floor wall panel snap-fit.

[0069] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. An anti-swelling and shrinking floor or wall panel fastener, comprising a first connecting part (3) or a second connecting part (4) arranged on two opposite side edges of a floor or wall panel respectively, the first connecting part (3) of any floor or wall panel being engaged with the second connecting part (4) of another floor or wall panel, characterized in that: The first connecting part (3) comprises a first flange (31) and a second flange (32), and a first connecting groove (34) is formed between the first flange (31) and the second flange (32); the second connecting part (4) comprises a connecting convex tooth (41) matched with the first connecting groove (34), and a first expansion gap (5) is formed between the connecting convex tooth (41) and the inner side wall of the first connecting groove (34); a second concave surface (42) is formed on the second connecting part (4) and located on the side of the connecting convex tooth (41) close to the second flange (32), a second connecting groove (43) matched with the second flange (32) is formed between the connecting convex tooth (41) and the second concave surface (42), and a second expansion gap (6) is formed between the second flange (32) and the inner side wall of the second connecting groove (43); a first concave surface (33) is formed between the first flange (31) and the second flange (32) and located in the side wall of the first connecting groove (34), a clamping block (321) is arranged at the end of the second flange (32) away from the first concave surface (33), and a buckling part (412) matched with the clamping block (321) is arranged on the connecting convex tooth (41); a contraction groove (322) is arranged between the side wall surface of the second flange (32) facing the second concave surface (42) and the side wall surface of the clamping block (321) facing the second concave surface (42); the connection between the first concave surface (33) and the side wall surface of the first flange (31) facing the second flange (32) is in the shape of a circular arc with a radius of 0.1-3mm in a vertical section; a first inclined surface (411) is arranged between the side wall surface of the connecting convex tooth (41) away from the second flange (32) and the side wall surface of the connecting convex tooth (41) facing the first concave surface (33), and the included angle between the first inclined surface (411) and the surface of the floor or wallboard in a vertical section is 0°-70°; a second inclined surface (311) matched with the first inclined surface (411) is arranged on the side wall surface of the first flange (31) close to the second flange (32); and a fifth inclined surface (313) is arranged between the upper surface of the first flange (31) and the side wall of the first flange (31) facing the first inclined surface (411).

2. The anti-bulking floor wall panel clip of claim 1, wherein: The inner diameter size of the first expansion gap (5) or the second expansion gap (6) in the horizontal direction is 0.2-0.3mm.

3. The anti-bulking floor wall panel clip of claim 1, wherein: The included angle between the side wall surface of the clamping block (321) facing the first concave surface (33) and the plane perpendicular to the surface of the floor or wallboard is 0°-70°.

4. A floor or wall panel fastening profile resistant to swelling and shrinking, comprising a first connecting portion (3) or a second connecting portion (4) arranged on two opposite side edges of a floor or wall panel, respectively, the first connecting portion (3) of any floor or wall panel being fastened to the second connecting portion (4) of another floor or wall panel, characterized in that: The first connecting part (3) comprises a first flange (31) and a second flange (32), and a first connecting groove (34) is formed between the first flange (31) and the second flange (32); the second connecting part (4) comprises a connecting convex tooth (41) matched with the first connecting groove (34), and a first expansion gap (5) is formed between the connecting convex tooth (41) and the inner side wall of the first connecting groove (34); a second concave surface (42) is formed on the second connecting part (4) and located on the side of the connecting convex tooth (41) close to the second flange (32), and a second connecting groove (43) matched with the second flange (32) is formed between the connecting convex tooth (41) and the second concave surface (42), and a second expansion gap (6) is formed between the second flange (32) and the inner side wall of the second connecting groove (43); a first concave surface (33) is formed between the first flange (31) and the second flange (32) and located in the side wall of the first connecting groove (34); a step part (323) is arranged on the second flange (32), one end of the connecting convex tooth (41) close to the first concave surface (33) extends to the space between the step part (323) and the first flange (31), the side wall surface of the connecting convex tooth (41) towards the second flange (32) forms an angle of 30°-90° with the plane perpendicular to the surface of the floor or wall panel, and the connecting part between the side wall surface of the connecting convex tooth (41) towards the second flange (32) and the second concave surface (42) is in the shape of a circular arc with a radius of 0.1-5mm in the vertical section.

5. The anti-bulking floor wall panel clip of claim 4, wherein: The side wall surface of the connecting convex tooth (41) towards the first concave surface (33) forms an angle of 0-45° with the plane perpendicular to the surface of the floor or wall panel, and a bevel three (413) is arranged between the side wall surface of the connecting convex tooth (41) away from the second flange (32) and the side wall surface of the connecting convex tooth (41) towards the bevel three (413), the bevel three (413) forms an angle of 0°-70° with the surface of the floor or wall panel, and a bevel four (312) matched with the bevel three (413) is arranged on the first flange (31); a bevel five (313) is arranged between the side wall surface of the first flange (31) away from the second flange (32) and the side wall surface of the first flange (31) towards the bevel three (413).

6. A floor or wall panel with the anti-swelling-shrinking floor or wall panel fastening profile according to any one of claims 1 to 5, characterized in that: The elastic layer is made of one of IXPE, XPE, EVA and softwood.

7. A floor or wall panel according to claim 6, characterised in that: The elastic layer is made of one of IXPE, XPE, EVA and softwood.

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