Invisible abutted seam structure of ceramic rock plate

Abstract

The utility model relates to the technical field of building decoration materials, in particular to an invisible abutted seam structure of a ceramic rock plate, which comprises oblique angles arranged on two sides of a ceramic rock plate body, and blind holes are arranged on side walls of the oblique angles. The connecting strip is provided with an inserting rod, and the inserting rod is inserted into the blind hole, so that the connecting strip is connected with the ceramic rock plate body; the joint beautifying glue is filled in the connecting strip; the decorative strip is inserted into the connecting strip; and the crumple groove is formed in the connecting strip. Through the cooperation of the connecting strip, the seam beautifying glue and the decoration strip, the originally exposed rock plate seam is completely covered or filled, so that the seam is not obvious or even disappears visually, especially when the color and the texture of the decoration strip are matched with the rock plate body, natural transition of the texture can be achieved, the overall attractiveness of the background wall is greatly improved, and the background wall has the advantages of being simple in structure and convenient to use. The problem that holes are punctured in abutted seams of ceramic rock plates in the prior art is effectively solved.

Description

An invisible joint structure for ceramic slabs Technical Field

[0001] This utility model relates to the field of building decoration materials technology, and in particular to an invisible joint structure for ceramic rock slabs. Background Technology

[0002] Ceramic slabs are a new type of porcelain material, made from natural raw materials through a special high-temperature firing process. They possess numerous excellent properties, including large size, high malleability, diverse colors and patterns, high temperature resistance, scratch resistance, impermeability, acid and alkali resistance, zero formaldehyde, and environmental friendliness. Due to these properties, ceramic slabs are widely used in home and architectural decoration, especially as decorative panels for countertops or feature walls. However, when using ceramic slabs as feature walls, the size limitations of individual slabs and the requirements of the construction process usually necessitate the splicing of multiple slabs. In existing installation and splicing techniques, the seams between slabs are often quite noticeable, easily causing visual disharmony and affecting the overall aesthetics of the feature wall. These visible seams disrupt the overall, seamless, or continuous visual effect that ceramic slabs aim for, becoming a prominent problem affecting the decorative effect. Therefore, existing technologies urgently need improvement to address these issues. Summary of the Invention

[0003] This utility model discloses an invisible joint structure for ceramic slabs, aiming to solve the problem of unsightly joints in existing ceramic slabs that affect aesthetics.

[0004] This utility model includes beveled corners on both sides of the ceramic slab body, with blind holes on the sidewalls of the beveled corners; a connecting strip with a plug inserted into the blind hole to connect the connecting strip to the ceramic slab body; grout filling the connecting strip; a decorative strip inserted into the connecting strip; and a shrinkage groove disposed within the connecting strip.

[0005] Furthermore, the insert is flexible and has an interference fit with the blind hole.

[0006] Furthermore, the connecting strip is a plastic extruded strip.

[0007] Furthermore, the decorative strip can be made of plaster or plastic.

[0008] Furthermore, the decorative strip features a pattern that matches the texture on the ceramic slab itself.

[0009] Furthermore, the contraction groove provides space for the grout during the insertion of the decorative strip.

[0010] Furthermore, the collapse groove provides expansion and contraction space for the ceramic slab body to expand and contract with thermal changes in indoor temperature.

[0011] Furthermore, this blind hole is a non-through hole.

[0012] Furthermore, the angled sidewall forms an acute angle with the surface of the ceramic slab body.

[0013] Furthermore, the insert rods are spaced apart along the length of the connecting strip.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This utility model provides an invisible seam structure for ceramic slabs. It involves creating beveled edges with blind holes on both sides of the ceramic slab body, and connecting strips with insert rods are inserted into these blind holes to form a hidden groove for filling with grout and inserting decorative strips. After filling the connecting strip with grout, the decorative strip is inserted. Simultaneously, the shrinkage groove within the connecting strip provides space for the grout and absorbs stress caused by the thermal expansion and contraction of the slab. Through the cooperation of the connecting strip, grout, and decorative strip, the previously exposed seams of the slab are completely covered or filled, making the seams visually inconspicuous or even disappearing. Especially when the color and texture of the decorative strip match the slab body, a natural texture transition is achieved, greatly enhancing the overall aesthetics of the background wall and effectively solving the problem of unsightly seams in existing ceramic slab designs. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the overall structure of a ceramic slab with invisible joints.

[0017] Figure 2 is an enlarged structural diagram of point A in Figure 1.

[0018] Figure 3 is a cross-sectional schematic diagram of an invisible splicing structure of a ceramic rock slab.

[0019] In the picture: 1. Ceramic slab body; 2. Blind hole; 3. Insert rod; 4. Connecting strip; 5. Grout; 6. Decorative strip; 7. Collapse groove. Detailed Implementation

[0020] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] With the continuous development of architectural decoration technology, ceramic slabs have been increasingly widely used in home and public space decoration due to their excellent performance and beautiful texture, especially in the fields of background walls and countertops. However, in practical applications, due to the size limitations of slabs, multiple slabs often need to be spliced ​​together, resulting in visually noticeable seams that disrupt the overall continuity and aesthetics of the slab, becoming a prominent problem affecting the decorative effect. To solve this problem, this utility model provides an invisible seam structure for ceramic slabs. This structure effectively hides the seams and improves the overall decorative effect by setting specific connection and covering mechanisms at the splicing edges of the ceramic slab body. The structure includes beveled angles on both sides of the ceramic slab body and blind holes on its sidewalls, connecting strips with inserts for connection, sealant filled in the connecting strips, and decorative strips inserted into the connecting strips for covering, with shrinkage grooves provided in the connecting strips.

[0023] Specifically, this utility model relates to an invisible splicing structure for connecting ceramic slab bodies 1. The core of this structure lies in the special treatment of the splicing edges of the ceramic slab bodies 1 and the introduction of multiple cooperating structural components. The ceramic slab body 1 refers to a decorative slab. During splicing, the edges of two adjacent ceramic slab bodies 1 need to be connected and treated.

[0024] Referring to Figures 2 and 3, the concealed seam structure includes a ceramic slab body 1, whose two sides are beveled. Blind holes 2 are formed on the beveled sidewalls. The blind holes 2 are holes that do not penetrate the slab body and are used to receive connectors. The angle of the bevel can be designed according to actual needs, for example, it can be an acute angle, so that when two adjacent ceramic slab bodies 1 are joined, a V-shaped or U-shaped groove is formed. A connecting strip 4 is provided with a insert 3. The insert 3 is a protruding structure for engaging with the blind holes 2, and can be cylindrical, prismatic, or barbed. The insert 3 is designed to be inserted into the blind holes 2, thereby connecting the connecting strip 4 to the ceramic slab body 1. The connecting strip 4 is typically a groove-shaped structure used to accommodate grout 5 and decorative strips 6. Grout 5 is a material used to fill gaps, such as epoxy resin grout, cement-based grout, etc., which fills the groove formed by the connecting strip 4. Decorative strip 6 is a strip-shaped structure whose shape matches the groove of connecting strip 4. It can be inserted into connecting strip 4 to cover the grout 5 and connecting strip 4, thereby concealing the seam. Inside connecting strip 4, there is a shrinkage groove 7. The shrinkage groove 7 is a cavity or recess inside connecting strip 4, which provides space during subsequent installation.

[0025] Unlike existing technologies that simply align the edges of the slab and fill the gaps, this invention provides a more systematic and effective concealed joint solution by pre-setting bevels and blind holes at the edges of the slab and introducing a combined structure of connecting strips, grout, and decorative strips. Existing grout materials are prone to cracking, discoloration, or peeling, and the seam lines remain visible. This invention, however, utilizes the insertion rods on the connecting strips to mechanically connect with the blind holes on the slab body, improving the connection's strength. More importantly, by filling the connecting strip with grout and covering it with decorative strips, the seam is completely concealed visually. Especially when the surface treatment of the decorative strip coordinates with the slab body, a natural transition in texture and color can be achieved, greatly enhancing the overall decorative effect. The shrinkage groove design within the connecting strip also facilitates subsequent grout and decorative strip installation and can accommodate the possible thermal expansion and contraction of the slab.

[0026] When installing using the concealed seam structure of this utility model, firstly, the splicing edges of the ceramic slab body 1 are processed to form an angle and blind holes 2 are opened. Then, the insert 3 on the connecting strip 4 is inserted into the blind hole 2 of one of the ceramic slab bodies 1, achieving a preliminary connection between the connecting strip 4 and the slab body 1. Next, the slab body 1 is installed on a wall or other substrate. Subsequently, the blind hole 2 of the other ceramic slab body 1 is aligned with the insert 3 on the connecting strip 4, and the slab body 1 is pushed in, so that the insert 3 is inserted into the blind hole 2 of the slab body 1, thereby connecting the two slab bodies 1 together through the connecting strip 4 and forming a groove between them to conceal the seam. After the installation adhesive of the slab body 1 has cured, grout 5 is injected into the groove formed by the connecting strip 4. Finally, the decorative strip 6 is inserted into the groove of the connecting strip 4. During the insertion of the decorative strip 6, some of the grout 5 may be squeezed out. The shrinkage groove 7 within the connecting strip 4 provides space for the squeezed-out grout 5, preventing excessive overflow. Once the decorative strip 6 is inserted, it completely covers the grout 5 and the connecting strip 4 below, thus concealing the original seam line. Through these steps, utilizing the beveled edges and blind holes 2 of the ceramic slab body 1, the connecting strip 4 with its insert 3, the filled grout 5, the covering decorative strip 6, and the shrinkage groove 7 within the connecting strip 4, the seams between the ceramic slab bodies 1 are effectively concealed, improving the overall aesthetic appeal of the decoration.

[0027] Furthermore, this application also proposes that the insert is flexible and that the insert is interference-fitted with the blind hole.

[0028] Referring to Figure 3, in this embodiment, the insert 3 on the connecting strip 4 is designed to have a certain elasticity, and the insert 3 is connected to the blind hole 2 opened on the beveled side wall of the ceramic rock slab body 1 by an interference fit.

[0029] Specifically, the elasticity of the insert 3 refers to its ability to return to its original shape after being deformed by external force. This elasticity can be achieved by selecting suitable materials, such as using polymers with good elasticity (e.g., certain plastics). Alternatively, the structure of the insert 3 itself can be designed to be elastic, for example, by using a hollow structure, a slotted structure, or a structure with elastic barbs. An interference fit means that the outer diameter of the insert 3 is slightly larger than the inner diameter of the blind hole 2, so that when the insert 3 is pressed into the blind hole 2, the insert 3 and / or the blind hole 2 will undergo elastic or plastic deformation, thereby generating radial pressure and friction between them, forming a tight connection.

[0030] Therefore, through the elasticity of the insertion rod 3 and the interference fit with the blind hole 2, the insertion rod 3 can smoothly enter the blind hole 2. After insertion, due to the interference and the elastic recovery of the material, a continuous clamping force is generated between the insertion rod 3 and the wall of the blind hole 2. This clamping force forms a frictional connection, which greatly improves the connection strength and stability between the connecting strip 4 and the ceramic slab body 1. Compared with a simple clearance fit or transition fit, the interference fit can provide stronger pull-out and shear resistance, ensuring that the connecting strip 4 is not easy to loosen or fall off, thereby ensuring the firmness and reliability of the entire invisible splicing structure, and further improving the installation quality and service life.

[0031] Furthermore, this application also proposes that the connecting strip is a plastic extruded strip.

[0032] Referring to Figure 3, in this embodiment, the connecting strip 4 is specifically defined as a strip structure manufactured using a plastic extrusion process.

[0033] Specifically, plastic extrusion is a process that involves extruding molten plastic through a mold, then cooling and solidifying it to continuously produce plastic products with specific cross-sectional shapes. Making the connecting strip 4 into a plastic extruded strip means that the connecting strip 4 is made of plastic material, and its shape is obtained through a one-time extrusion process. This process is well-suited for producing long, strip-shaped components with complex cross-sectional shapes, such as the connecting strip 4 in this invention, which requires integrated structural features such as the insert 3, a groove to accommodate the sealant 5 and decorative strip 6, and a shrinkage groove 7.

[0034] Therefore, using extruded plastic strips as connecting strip 4 has significant advantages. First, plastic materials are relatively inexpensive, and the extrusion process is highly efficient, which helps reduce the manufacturing cost of connecting strip 4. Second, the extrusion process can easily realize complex cross-sectional designs of connecting strip 4, allowing structures such as insert rod 3, groove, and collapse groove 7 to be integrally molded, reducing subsequent processing steps and simplifying the manufacturing process. In addition, plastic materials generally have good corrosion resistance and a certain degree of elasticity, which helps improve the durability of connecting strip 4. Furthermore, if insert rod 3 and connecting strip 4 are integrally molded, the elasticity of the plastic material also helps to achieve an interference fit between insert rod 3 and blind hole 2, further enhancing the connection's strength. Therefore, limiting connecting strip 4 to extruded plastic strips provides an economical, efficient, and easy-to-manufacture solution, facilitating the widespread application of the entire invisible seam structure.

[0035] Furthermore, this application also proposes that the decorative strip be made of plaster or plastic.

[0036] Referring to Figure 3, in this embodiment, the decorative strip 6 inserted into the connecting strip 4 is limited to being made of plaster or plastic.

[0037] Specifically, the decorative strip 6 is made of either plaster or plastic, both of which are easy to mold and surface treat. If plaster is used, the decorative strip 6 can be painted or hand-painted after installation to ensure its color and texture match those of the ceramic slab body 1. If plastic is used, the decorative strip 6 can either be pre-patterned with a design matching the texture of the ceramic slab body 1 during manufacturing, or it can be surface-treated after installation. For example, plastic decorative strips can be pre-patterned using printing, heat transfer, or similar processes, or painted or hand-painted like plaster decorative strips.

[0038] Therefore, limiting the material of decorative strip 6 to plaster or plastic provides a flexible and effective means of visually concealing the seams. Both materials are easy to match with the color and texture of the ceramic slab body 1. Whether through pre-fabricated patterns or post-processing, decorative strip 6 can visually blend with the adjacent slab body 1, thus allowing the texture at the seam to continue and eliminating the abruptness of the seam. Compared with other materials that are difficult to surface treat or match in color and texture, decorative strip 6 made of plaster or plastic can better achieve the effect of invisible seams, greatly improving the overall aesthetics and decorative quality of the background wall.

[0039] Furthermore, this application also proposes that the decorative strip has a pattern that matches the texture on the ceramic slab body.

[0040] Referring to Figure 1, in this embodiment, the surface of the decorative strip 6 inserted into the connecting strip 4 is given a pattern that matches the texture on the surface of the adjacent ceramic slab body 1.

[0041] Specifically, a pattern matching the texture of the ceramic slab body 1 refers to visual elements such as color, texture, and lines on the surface of the decorative strip 6 being visually consistent or continuous with the surface texture of the adjacent ceramic slab body 1. This matching can be achieved in various ways. For example, if the decorative strip 6 is made of plaster, its surface can be finely painted or hand-painted to replicate or continue the texture pattern of the slab body 1. If the decorative strip 6 is made of plastic, a pattern matching the slab body 1 can be pre-made on the surface of the decorative strip 6 during the manufacturing process through printing, heat transfer, mold texturing, or other methods. The higher the degree of pattern matching, the better the invisible effect.

[0042] Therefore, by setting a pattern on the decorative strip 6 that matches the texture of the ceramic slab body 1, the slab texture, which was originally interrupted by the seam, is visually continued. When an observer looks at the seam area, because the pattern of the decorative strip 6 blends into the texture of the slab body 1, the seam line becomes extremely inconspicuous, and even almost invisible at a certain distance and angle. This natural transition of texture greatly enhances the overall feel and aesthetics of the background wall, and is one of the key technical features for achieving the "invisible seam" effect, significantly improving the decorative effect of this utility model compared to the prior art.

[0043] Furthermore, this application also proposes that the contraction groove provides clearance for the grout during the insertion of the decorative strip.

[0044] Referring to Figure 3, in this embodiment, the collapse groove 7 provided inside the connecting strip 4 is designed in a structure and position such that it can accommodate a portion of the squeezed-out sealant 5 when the decorative strip 6 is inserted into the groove of the connecting strip 4.

[0045] Specifically, the shrinkage groove 7 can be a cavity, recess, or area with a compressible structure extending along the length of the connecting strip 4. After the grout 5 is injected into the connecting strip 4, the groove of the connecting strip 4 is filled with the grout 5. Subsequently, when the decorative strip 6 is pressed into the groove, the decorative strip 6 occupies a portion of the space, thereby squeezing the grout 5 in the groove. At this time, the shrinkage groove 7, as a reserved buffer space, can receive this portion of the squeezed-out grout 5. The shape and volume of the shrinkage groove 7 can be designed according to the dimensions of the connecting strip 4 and the decorative strip 6, as well as the expected amount of grout filling, to ensure that it can effectively accommodate the squeezed-out grout.

[0046] Therefore, by incorporating a contraction groove 7 within the connecting strip 4, a space is provided to accommodate the sealant 5 that is squeezed out during the insertion of the decorative strip 6. This prevents excessive sealant 5 from overflowing onto the outside of the connecting strip 4, reducing the amount of cleanup work at the construction site and making the grouting process more convenient and efficient. Simultaneously, controlling sealant overflow also helps maintain the cleanliness of the joint area, improving the final decorative effect. Therefore, the design of the contraction groove 7 optimizes the installation process and is an important auxiliary feature for achieving high-quality, invisible joints.

[0047] Furthermore, this application also proposes that the collapse groove provides expansion and contraction space for the ceramic slab body when the indoor temperature changes.

[0048] Referring to Figure 3, in this embodiment, the collapse groove 7 provided inside the connecting strip 4 not only provides clearance when the decorative strip 6 is inserted, but is also designed to provide a certain amount of expansion and contraction space for the thermal expansion and contraction of the ceramic slab body 1 when the indoor temperature changes.

[0049] Specifically, the ceramic slab body 1, as a solid material, undergoes slight dimensional changes with variations in ambient temperature, i.e., thermal expansion and contraction. Over a large installation area, these dimensional changes can accumulate and generate considerable stress. If the connection structure cannot effectively absorb or release this stress, it may lead to cracking of the slab body 1, damage to the connection structure, or deformation of the joints over time. The contraction groove 7, acting as a cavity or a structure with a certain degree of elasticity within the connecting strip 4, can be compressed or provide additional space when the slab body 1 expands due to temperature increases, thus absorbing some of the expansion stress. Conversely, when the slab body 1 contracts due to temperature decreases, the contraction groove 7 can also adapt to this change to some extent. The shape and size of the contraction groove 7, along with the elasticity of the connecting strip 4 material, collectively determine the size of the expansion and contraction space it can provide and its stress absorption capacity.

[0050] Therefore, by providing the expansion and contraction space 7 inside the connecting strip 4 to accommodate temperature changes, the concealed seam structure of this invention effectively copes with the thermal expansion and contraction of the ceramic slab body 1 caused by environmental temperature variations. This significantly reduces the risk of damage to the slab body 1 and the connecting structure due to temperature stress, improving the long-term stability and durability of the entire background wall structure. Compared with existing technologies that do not provide such expansion and contraction space, this invention better adapts to temperature fluctuations in actual use environments, extends the service life of the decorative structure, and reduces maintenance costs.

[0051] Furthermore, this application also proposes that the blind hole is a non-through hole.

[0052] Referring to Figure 3, in this embodiment, the blind hole 2 opened on the oblique sidewall of the ceramic slab body 1 is defined as a non-through hole.

[0053] Specifically, a non-through hole refers to a hole that does not completely penetrate the thickness of the ceramic slab body 1. The blind hole 2 has a certain depth, but its bottom is located inside the slab body 1 and does not extend to the other side surface of the slab body 1. This non-through design can be achieved through machining methods such as drilling or milling, by controlling the hole depth during machining.

[0054] Therefore, defining the blind hole 2 as a non-through hole has significant technical implications. Firstly, using a non-through hole maintains the integrity of the other surface of the ceramic slab body 1, which is crucial for slabs used as background walls or countertops, preventing holes from affecting the back bonding of the slab or exposing the non-decorative surface. Secondly, the non-through hole provides an insertion port with a closed bottom for the insert rod 3 on the connecting strip 4, allowing the insert rod 3 to be supported and constrained from the bottom of the hole during insertion. This helps improve the connection strength and stability between the insert rod 3 and the blind hole 2, especially in the case of an interference fit, where the non-through hole provides better support, ensuring that the radial pressure generated by the interference fit is effectively converted into a connecting force. Therefore, the non-through design of the blind hole 2 is an important technical feature for ensuring a robust and reliable connection structure and the integrity of the slab body.

[0055] Furthermore, this application also proposes that the angled sidewall forms an acute angle with the surface of the ceramic slab body.

[0056] Referring to Figure 3, in this embodiment, the oblique angles formed on both sides of the ceramic slab body 1 form an acute angle between their sidewalls and the main surface (i.e., the decorative surface or the mounting surface) of the ceramic slab body 1.

[0057] Specifically, the acute angle refers to an angle less than 90 degrees. By processing the edge of the slab body 1 into an angled shape, when two adjacent slab bodies 1 are joined, their angled sidewalls face each other, thereby forming a groove with a specific cross-sectional shape between the two slab bodies 1, such as a V-shaped groove or a U-shaped groove. The angle of this angle can be designed according to the size and shape of the connecting strip 4, the grout 5, and the decorative strip 6 to ensure that these components can be smoothly installed and fully accommodated within the groove. For example, the acute angle can preferably be 45 degrees, so that a 90-degree V-shaped groove is formed when the two slabs are joined.

[0058] Therefore, by designing the beveled sidewalls of the ceramic slab body 1 to form an acute angle with the body surface, a prefabricated groove with sufficient space is provided for the installation of the connecting strip 4, the grout 5, and the decorative strip 6. This beveled design allows the connecting strip 4 to be effectively hidden below the edge of the slab body 1, and creates the necessary space for filling the grout 5 and inserting the decorative strip 6. Compared to simply aligning the edges of the slab vertically, the groove formed by the beveled design makes subsequent concealed joint treatment easier and more effective, helping to ensure that the decorative strip 6 can completely cover the joint area, thereby achieving a more natural and thorough concealment effect and further enhancing the overall aesthetics of the decoration.

[0059] Furthermore, this application also proposes that the insert be spaced apart along the length of the connecting strip.

[0060] Referring to Figure 3, in this embodiment, the inserts 3 provided on the connecting strip 4 are not continuously provided along the entire length of the connecting strip 4, but are arranged at certain intervals along its length.

[0061] Specifically, the inserts 3 can be evenly spaced along the length of the connecting strip 4, for example, one or a group of inserts 3 can be placed at regular intervals. The spacing and the number of inserts 3 can be designed according to the size and weight of the ceramic slab body 1 and the required connection strength. For example, for a longer connecting strip 4, inserts 3 can be placed at both ends and in the middle, or distributed along the length at a certain density. This spaced arrangement means that only some areas of the connecting strip 4 have inserts 3, while other areas do not.

[0062] Therefore, by spaced-apart inserts 3 along the length of the connecting strip 4, the number of inserts 3 and the required materials can be reduced while ensuring sufficient connection strength and stability between the connecting strip 4 and the ceramic slab body 1. This not only helps reduce the manufacturing cost of the connecting strip 4 but may also simplify the production process of the connecting strip 4. Simultaneously, the spaced-apart inserts 3 may also be easier to align with the blind holes 2 on the ceramic slab body 1 during installation, thereby improving installation efficiency. Compared to the scheme of continuously arranging inserts along the length of the connecting strip, the spaced-apart inserts achieve material savings and cost optimization while meeting functional requirements, making it a more economical and practical implementation of this invention.

[0063] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A concealed joint structure for ceramic slabs, used for connecting ceramic slab bodies (1), characterized in that, include: The ceramic slab body (1) has beveled corners on both sides, and blind holes (2) are provided on the beveled sidewalls; a connecting strip (4) is provided with a plug (3) on the connecting strip (4), and the plug (3) is inserted into the blind hole (2) to realize the connection between the connecting strip (4) and the ceramic slab body (1); a grout sealant (5) is filled in the connecting strip (4); a decorative strip (6) is inserted into the connecting strip (4); and a shrinkage groove (7) is provided in the connecting strip (4).

2. The invisible joint structure of ceramic slabs according to claim 1, characterized in that, The insertion rod (3) is elastic and is interference-fitted with the blind hole (2).

3. The invisible joint structure of ceramic slabs according to claim 1, characterized in that, The connecting strip (4) is a plastic extruded strip.

4. The invisible joint structure of ceramic slabs according to claim 1, characterized in that, The decorative strip (6) is made of plaster or plastic.

5. The invisible joint structure of a ceramic slab according to claim 1, characterized in that, The decorative strip (6) has a pattern that matches the texture on the ceramic slab body (1).

6. The invisible joint structure of a ceramic slab according to claim 5, characterized in that, The collapse groove (7) provides space for the sealant (5) during the insertion of the decorative strip (6).

7. The invisible joint structure of a ceramic slab according to claim 6, characterized in that, The collapse groove (7) provides expansion and contraction space for the ceramic rock slab body (1) when the indoor temperature changes.

8. The invisible joint structure of a ceramic slab according to claim 7, characterized in that, The blind hole (2) is a non-through hole.

9. The invisible joint structure of a ceramic slab according to claim 8, characterized in that, The oblique sidewall forms an acute angle with the surface of the ceramic slab body (1).

10. The invisible joint structure of a ceramic slab according to claim 9, characterized in that, The inserts (3) are spaced apart along the length of the connecting strip (4).

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