A crack-resistant building panel based on elastic snap-lock joints

Abstract

The utility model relates to the field of building board, especially to a crackproof building board based on elastic lock joint. The utility model wants to solve the technical problem to provide a crackproof building board based on elastic lock joint which can significantly improve the long-term stability and crack resistance of building board joint and prevent crack initiation and expansion. A crackproof building board based on elastic lock joint, comprising first board and second board which are spliced with each other; the first board and the second board are both ladder-shaped structures, having a thin end with thinner thickness and a thick end with thicker thickness; the thin end face of the first board and the thin end face of the second board are spliced with each other; a groove is arranged on the thin end face of the first board, and a protrusion matched with the groove is arranged on the thin end face of the second board; the groove and the protrusion are mutually buckled to form a lock structure. The utility model achieves the effect of improving the long-term stability and crack resistance of building board joint and preventing crack initiation and expansion.

Description

Technical Field

[0001] This utility model relates to the field of building panels, and in particular to a crack-resistant building panel based on an elastic locking joint. Background Technology

[0002] In the field of modern construction, lightweight building materials such as gypsum board, calcium silicate board, and cement fiberboard are widely used in interior and exterior partition walls, ceilings, and other projects due to their convenient construction and good performance. However, the treatment of joints between boards has always been a key problem affecting the final finish and long-term durability. Stress generated by changes in environmental temperature and humidity, structural settlement, or external forces can easily concentrate at the rigid joints, leading to cracking. This not only affects the aesthetics but may also reduce the integrity, sound insulation, and thermal insulation performance of the walls or ceilings, and even provide channels for moisture penetration, causing more serious quality problems.

[0003] Existing joint treatment methods, such as using ordinary caulking plaster or joint tape, mainly rely on the material's adhesive strength and limited elasticity to close the gaps. However, these methods have significant shortcomings. First, their rigidity makes it difficult to effectively absorb and disperse large stress and strain, making them prone to fatigue cracking under repeated stress. Second, the lack of a reliable mechanical locking structure at the joints allows for slight horizontal misalignment between the boards, further exacerbating the risk of cracking. Finally, stress often concentrates highly at the joint edges, and once it exceeds the material's strength limit, cracks will form and may propagate towards the board surface. Therefore, there is an urgent need to develop a crack-resistant building board based on elastic locking joints that can significantly improve the long-term stability and crack resistance of building board joints and prevent crack initiation and propagation. Utility Model Content

[0004] To overcome the shortcomings of existing joint treatment methods, such as difficulty in effectively absorbing and dispersing large stress and strain, easy fatigue cracking under repeated stress, lack of reliable mechanical locking structure at the joint, and high stress concentration at the joint edge, this utility model aims to provide a crack-resistant building board based on elastic locking joints that can significantly improve the long-term stability and crack resistance of building board joints and prevent crack initiation and propagation.

[0005] This utility model is achieved by the following specific technical means:

[0006] A crack-resistant building panel based on elastic interlocking joints, comprising a first panel and a second panel that are spliced ​​together.

[0007] Both the first and second plates have a stepped structure, with a thinner end and a thicker end; the thinner end face of the first plate and the thinner end face of the second plate are spliced ​​together; a groove is provided on the spliced ​​end face of the thinner end of the first plate, and a protrusion matching the groove is provided on the spliced ​​end face of the thinner end of the second plate, the groove and the protrusion interlocking to form a locking structure; a first elastic putty is filled between the first and second plates, and the first elastic putty covers the contacting spliced ​​surfaces and the interlocking parts of the groove and the protrusion;

[0008] The first board has a first inclined chamfer at the thin end away from the thick end corner, and the second board has a second inclined chamfer at the step where the thin end and the thick end meet; the first and second inclined chamfers form a triangular groove, and the triangular groove is filled with a second elastic putty.

[0009] Furthermore, the total thickness of the first and second plates after splicing is equal to the thickness of their respective thick ends.

[0010] Furthermore, the cross-section of the groove and the protrusion is trapezoidal or rectangular, and the groove and the protrusion are connected by a gap engagement.

[0011] Furthermore, the first elastic putty and the second elastic putty are polyurethane elastic sealant, silicone-modified acrylic sealant, or rubber-based elastic sealant.

[0012] Furthermore, the first and second boards are gypsum board, calcium silicate board, cement fiber board, or gypsum-based composite material board.

[0013] Furthermore, the depth of the groove is 1 / 5 to 1 / 3 of the plate thickness, and the height of the protrusion matches the depth of the groove.

[0014] Furthermore, the tilt angles of the first and second tilt angles are 30°–60°, preferably 45°.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This invention achieves the effect of improving the long-term stability and crack resistance of building panel joints, and preventing the initiation and expansion of cracks. Attached Figure Description

[0017] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0018] Figure 2 This is a cross-sectional view of the first plate material of this utility model.

[0019] Figure 3 This is a cross-sectional view of the second plate of this utility model.

[0020] The labels in the attached diagram are: 1-first board, 2-second board, 3-first elastic putty, 4-second elastic putty, 11-groove, 12-first inclined chamfer, 21-protrusion, 22-second inclined chamfer. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings: Example

[0022] A crack-resistant building panel based on elastic interlocking joints, such as Figure 1-3 As shown, it includes a first board 1 and a second board 2 that are spliced ​​together.

[0023] Both the first board 1 and the second board 2 have a stepped structure, with a thinner end and a thicker end; the thinner end face of the first board 1 and the thinner end face of the second board 2 are spliced ​​together; a groove 11 is provided on the splicing end face of the thinner end of the first board 1, and a protrusion 21 matching the groove 11 is provided on the splicing end face of the thinner end of the second board 2, and the groove 11 and the protrusion 21 are interlocked to form a locking structure; a first elastic putty 3 is filled between the first board 1 and the second board 2, and the first elastic putty 3 covers the contacting splicing surfaces and the interlocking parts of the groove 11 and the protrusion 21;

[0024] The thin end of the first board 1 is provided with a first inclined chamfer 12 away from the corner of the thick end, and the thin end of the second board 2 is provided with a second inclined chamfer 22 at the step where the thick end and the thin end meet; the first inclined chamfer 12 and the second inclined chamfer 22 form a triangular groove 11 opposite to each other, and the triangular groove 11 is filled with a second elastic putty 4.

[0025] Working principle:

[0026] This utility model of building panels effectively absorbs and disperses stress through the synergistic effect of mechanical locking and elastic filling material, preventing cracking at the joints. The first panel 1 and the second panel 2 are connected by a gap between the trapezoidal or rectangular groove 11 on their stepped thin end faces and the protrusion 21, forming a basic mechanical locking structure. This ensures precise alignment of the panels during splicing and provides resistance to horizontal misalignment, preventing the panels from shifting during installation or under slight stress. The splicing surfaces of the panels and the interlocking parts of the groove 11 and the protrusion 21 are filled with a first elastic putty 3. The first elastic putty 3 fills the tiny gaps between the panels and the gaps at the interlocking points of the groove 11 / protrusion 21, preventing the intrusion of moisture, air, and impurities. At the same time, it can effectively absorb the stress generated by temperature changes, humidity changes, or slight structural settlement of the panels, allowing the panels to undergo slight relative displacement at the joints without transmitting rigid stress to the joint edges and causing cracking.

[0027] Meanwhile, the thin end of the first board 1 is provided with a first inclined chamfer 12, and the step of the second board 2 is provided with a second inclined chamfer 22. After splicing, a triangular groove 11 pointing inward is formed, and the triangular groove 11 is filled with a second elastic putty 4. This triangular area is located at the weakest point of the joint and where stress is most likely to concentrate. The second elastic putty 4 filling it forms a flexible buffer zone. When the board deforms, the stress will concentrate in the triangular area. Since the triangular groove 11 provides more space, the elastic putty inside can undergo greater elastic deformation, effectively dispersing and absorbing the concentrated stress, and preventing the stress from exceeding the strength of the board itself and causing cracks at that point. Even if a small crack occurs, its path will be guided to the triangular putty area with high elasticity and deformation capacity, preventing the crack from further extending to the surface or interior of the board.

[0028] Although this disclosure has been described in detail with reference to exemplary embodiments, it is not limited thereto, and it will be apparent to those skilled in the art that various modifications and changes may be made thereto without departing from the scope of this disclosure.

Claims

1. A crack-resistant building panel based on an elastic interlocking joint, comprising a first panel (1) and a second panel (2) that are spliced ​​together. characterized in that Both the first board (1) and the second board (2) are stepped structures, with a thin end and a thick end; the thin end face of the first board (1) and the thin end face of the second board (2) are spliced ​​together; a groove (11) is provided on the splicing end face of the thin end of the first board (1), and a protrusion (21) matching the groove (11) is provided on the splicing end face of the thin end of the second board (2), and the groove (11) and the protrusion (21) are interlocked to form a locking structure; a first elastic putty (3) is filled between the first board (1) and the second board (2), and the first elastic putty (3) covers the splicing surface and the interlocking part of the groove (11) and the protrusion (21); The thin end of the first board (1) is provided with a first inclined chamfer (12) away from the thick end corner, and the thin end of the second board (2) is provided with a second inclined chamfer (22) at the step where the thin end and the thick end meet; the first inclined chamfer (12) and the second inclined chamfer (22) form a triangular groove (11) opposite to each other, and the triangular groove (11) is filled with a second elastic putty (4).

2. A split-resistant building panel based on elastic lock seam according to claim 1, characterized in that, The total thickness of the first plate (1) and the second plate (2) after splicing is equal to the thickness of their respective thick ends.

3. A split-resistant building panel based on elastic lock seam according to claim 1, characterized in that, The cross-sections of the groove (11) and the protrusion (21) are trapezoidal or rectangular, and the groove (11) and the protrusion (21) are connected by a gap snap-fit.

4. A split-resistant building panel based on elastic lock seam according to claim 1, characterized in that, The first elastic putty (3) and the second elastic putty (4) are polyurethane elastic sealant, silicone modified acrylic sealant or rubber-based elastic sealant.

5. A split-resistant building panel based on elastic lock seam according to claim 1, characterized in that, The first board (1) and the second board (2) are gypsum board, calcium silicate board, cement fiber board or gypsum-based composite board.

6. A split-resistant building panel based on elastic lock seam according to claim 1, characterized in that, The depth of the groove (11) is 1 / 5 to 1 / 3 of the thickness of the plate, and the height of the protrusion (21) matches the depth of the groove (11).

7. A split-resistant building panel based on elastic lock seam according to claim 1, characterized in that, The tilt angles of the first tilt angle (12) and the second tilt angle (22) are 30° to 60°.

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