Stair step anti-skid ceramic tile and adjusting structure

Abstract

The present application belongs to the technical field of ceramic tiles, and particularly relates to a stair step anti-skid ceramic tile and an adjusting structure, which comprises a step tile, an anti-skid column, a metal mounting shell, a screw rod, a top plate, a spring, a metal sleeve and a mounting sliding sleeve. The anti-skid column is made of rubber material, and the anti-skid column protruding from the upper end surface of the step tile has an anti-skid effect, and is relatively safe compared with a metal strip. After the anti-skid column designed in the present application is worn after a period of use, the anti-skid column can be controlled to rotate through the adjusting structure, and the area of the anti-skid column protruding from the circular groove is changed. The anti-skid column does not need to be replaced, and the service life is increased. Moreover, after the anti-skid column cannot be used completely, the anti-skid column and the metal sleeve only need to be removed, and the anti-skid column is replaced, and the metal sleeve inside the anti-skid column can continue to be used, so that the cost is greatly reduced, and the use is relatively convenient.

Description

Technical Field

[0001] This invention belongs to the field of ceramic tile technology, and in particular relates to an anti-slip ceramic tile for stair treads and its adjustment structure. Background Technology

[0002] Using ceramic tiles on stairs, especially on treads, offers advantages such as aesthetics and low cost. When using tread tiles, anti-slip design is essential, especially in places with many elderly people like nursing homes and hospitals where sufficient slip resistance is required. Currently, there are two types of anti-slip designs: one is to create one or two grooves along the edge of the tread tile, which provides some anti-slip effect, but the effect is not ideal; the other is to embed anti-slip strips on the front side of the tread tile.

[0003] There are two types of anti-slip strips. One type is a hard metal strip, which has poor anti-slip effect and cannot meet the anti-slip requirements of special occasions. In addition, the edges of the metal strip can easily cause secondary injuries when falling. The other type is a composite anti-slip strip made of softer rubber strip and metal frame. This type of anti-slip strip is better and can meet the needs of special occasions such as nursing homes or hospitals. However, the anti-slip effect of this type of anti-slip strip will decrease due to friction after a period of use.

[0004] This invention designs an anti-slip ceramic tile for stair treads to solve the above-mentioned problems associated with anti-slip strips used in special locations. Summary of the Invention

[0005] To achieve the above objectives, the present invention employs the following technical solutions:

[0006] A type of anti-slip ceramic tile for stair treads includes a tread tile, anti-slip posts, a metal mounting shell, a screw, top plates, springs, a metal sleeve, and a mounting slide sleeve. The metal mounting shell is detachably installed inside the tread tile by fixing screws and is located on the front end of the tread tile near the wall. The mounting slide sleeve is slidably installed inside the metal mounting shell, and the metal mounting shell limits the rotation of the mounting slide sleeve. Three top plates are circumferentially and evenly fixed to one end face of the mounting slide sleeve, extending beyond the outside of the metal mounting shell. A spring is installed between the other end of the mounting slide sleeve and the inner end face of the metal mounting shell. One end of the screw is slidably installed inside the mounting slide sleeve, and the mounting slide sleeve limits the rotation of the screw. The metal sleeve is threaded onto the screw, and anti-slip posts are installed on the outer side of the metal sleeve.

[0007] As a preferred embodiment, a square groove for mating between the step brick and the front stop brick is provided on the lower side of the front end of the step brick; a circular groove for installing an anti-slip post is provided on the upper surface of the front end of the step brick, the circular groove being a notched groove with its axis lower than the upper surface of the step brick; the outer circumference of the anti-slip post extends out of the circular groove and is higher than the upper surface of the step brick; one end of the circular groove extends out of the end face of the step brick, and the other end of the circular groove has a square mounting groove for installing a metal mounting shell, the upper side of which has an arc-shaped protrusion; a first threaded hole is provided on one side of the square mounting groove, and a second threaded hole is provided on one end of the metal mounting shell; a fixing screw passes through the first threaded hole through a threaded engagement and then engages with the second threaded hole on the metal mounting shell to fix the metal mounting shell onto the step brick.

[0008] As a preferred embodiment, one end of the metal mounting shell has three circumferentially evenly distributed first sliding grooves and a second sliding groove in the middle circular shape; the inner cavity of the metal mounting shell is a square cavity, and one end of the mounting sleeve has a square limiting block; the mounting sleeve is slidably installed in the metal mounting shell through the square limiting block; a through third sliding groove with straight surfaces on both sides is opened in the middle of the mounting sleeve, and one end of the screw has a screw head with symmetrically distributed straight surfaces; the screw is slidably connected to the mounting sleeve through the sliding fit between the straight surfaces on the screw head and the third sliding groove on the mounting sleeve; the screw passes through the second sliding groove opened on the metal mounting shell, and the three top plates are arc-shaped, passing through the three first sliding grooves.

[0009] As a preferred embodiment, the end of the fixing screw has a square limiting block, and a limiting groove is formed on the screw head, with the limiting groove cooperating with the square limiting block.

[0010] As a preferred embodiment, the outer circular surface of the metal sleeve is fixedly equipped with uniformly distributed cylindrical protrusions.

[0011] As a preferred embodiment, one end of the metal sleeve has an internal thread area on its inner circular surface, and the metal sleeve is installed on the screw through the engagement of the internal thread area with the screw.

[0012] An adjustable structure for anti-slip ceramic tile stair treads includes a handle, a first rotating shaft, a first support, a first gear, a second gear, a second support, a second rotating shaft, a third gear, and a fourth gear. The first rotating shaft is rotatably mounted on the outer wall of the staircase via multiple evenly distributed first supports. A handle is fixedly mounted at one end of the first rotating shaft. Multiple first gears are evenly fixedly mounted on the first rotating shaft. Multiple second rotating shafts are rotatably mounted on the outer wall of the staircase via evenly distributed second supports, with each second rotating shaft corresponding to a single ceramic tile. A second gear is fixedly mounted at the lower end of each second rotating shaft, and the second gears correspond one-to-one with and mesh with the first gears. A third gear is fixedly mounted at the upper end of each second rotating shaft. A fourth gear is mounted on each metal sleeve, and the fourth gears correspond one-to-one with and mesh with the third gears.

[0013] As a preferred embodiment, each metal sleeve has a hexagonal mounting head at one end, an external threaded sleeve is fixedly mounted on the outer side of the hexagonal mounting head, the inner wall of the fourth gear is a hexagonal groove, the fourth gear is mounted on the hexagonal mounting head through the hexagonal groove, and a fastening nut is installed on the external threaded sleeve.

[0014] Compared with existing technologies, the advantages of this invention are:

[0015] 1. In this invention, the anti-slip post is made of rubber. The anti-slip post protruding from the upper surface of the step brick has an anti-slip effect and is relatively safer than metal strips.

[0016] 2. After the anti-slip post designed in this invention wears out after a period of use, the rotation of the anti-slip post can be controlled by adjusting the structure, changing the area of ​​the anti-slip post protruding from the circular groove; there is no need to replace the anti-slip post, which increases its service life. Moreover, when the anti-slip post is completely unusable, only the anti-slip post and the metal sleeve need to be removed and the anti-slip post replaced, while the metal sleeve inside the anti-slip post can still be used, which greatly reduces the cost and makes it more convenient to use.

[0017] 3. The anti-slip post mounting shell designed in this invention is easy to disassemble; you only need to control whether the screw and metal sleeve rotate as needed. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall component appearance.

[0019] Figure 2 This is a schematic diagram of the installation of the adjustment structure.

[0020] Figure 3 This is a diagram showing the combination of step bricks and front barrier bricks.

[0021] Figure 4 This is an installation diagram of the metal mounting housing.

[0022] Figure 5 This is a schematic diagram of the step brick structure.

[0023] Figure 6 This is a schematic diagram of the screw installation.

[0024] Figure 7 It is a structural diagram of the metal mounting housing, mounting sleeve, and screw.

[0025] Figure 8 This is a diagram showing the installation of anti-slip posts.

[0026] Figure 9 This is a schematic diagram of the metal sleeve.

[0027] Figure 10 This is a schematic diagram illustrating the installation principle of anti-slip posts.

[0028] Labels in the diagram: 1. Step brick; 2. Base mortar; 3. Staircase; 4. Adjustable structure; 5. Front retaining brick; 6. Handle; 7. First pivot; 8. First support; 9. First gear; 10. Second gear; 11. Second support; 12. Second pivot; 13. Third gear; 14. Fourth gear; 15. Anti-slip post; 16. Fixing screw; 17. Metal mounting shell; 18. Fastening nut; 19. Screw; 20. Square groove ; 21. Circular groove; 22. Protrusion; 23. First threaded hole; 24. Square mounting groove; 25. Top plate; 26. Spring; 27. Mounting sleeve; 28. Second slide groove; 29. ​​Square limiting block; 30. Screw head; 31. Limiting groove; 32. Third slide groove; 33. Metal sleeve; 34. Cylindrical protrusion; 35. Hexagonal mounting head; 36. External threaded sleeve; 37. Internal threaded area; 38. Second threaded hole; 39. First slide groove. Detailed Implementation

[0029] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following embodiments and drawings are used to illustrate the present invention, but are not intended to limit the scope of the invention.

[0030] A type of non-slip ceramic tile for three-step staircases, such as Figure 4 , 5 As shown, it includes step bricks 1, anti-slip posts 15, metal mounting shells 17, screws 19, top plates 25, springs 26, metal sleeves 33, and mounting sliding sleeves 27, wherein... Figure 3 , 5As shown, a square groove 20 for mating between the step brick 1 and the front stop brick 5 is provided on the lower side of the front end of the step brick 1; a circular groove 21 is provided on the upper surface of the front end of the step brick 1, the circular groove 21 being a notched groove, the axis of the circular groove 21 being lower than the upper surface of the step brick 1; one end of the circular groove 21 protrudes through the end face of the step brick 1, and the other end of the circular groove 21 is provided with a square mounting groove 24, the upper side of the square mounting groove 24 having an arc-shaped protrusion 22; a first threaded hole 23 is provided on one side of the square mounting groove 24; as shown Figure 7 As shown, one end of the metal mounting shell 17 has a second threaded hole 38, and the other end of the metal mounting shell 17 has three circumferentially evenly distributed first sliding grooves 39 and a second sliding groove 28 located in the middle circular shape; the inner cavity of the metal mounting shell 17 is a square cavity; as shown Figure 4 As shown, the metal mounting shell 17 is detachably installed inside the step brick 1 by fixing screws 16, and is located on the front end of the step brick 1 near the wall; the fixing screws 16 pass through the first threaded hole 23 through threaded engagement and then connect with the second threaded hole 38 on the metal mounting shell 17, fixing the metal mounting shell 17 to the step brick 1; as Figure 7 As shown, the end of the fixing screw 16 has a square limiting block 29; one end of the mounting sleeve 27 also has a square limiting block 29; as Figure 6 As shown, the mounting sleeve 27 is slidably mounted inside the metal mounting housing 17 via the square limiting block 29, as... Figure 6 , 7 As shown, three top plates 25 are evenly fixedly installed circumferentially on one end face of the mounting sleeve 27. The three top plates 25 are arc-shaped and pass through three first sliding grooves 39. A third sliding groove 32 with straight sides is opened in the middle of the mounting sleeve 27. One end of the screw 19 has a screw head 30 with symmetrically distributed straight surfaces. The screw 19 is slidably connected to the mounting sleeve 27 through the sliding fit between the straight surface on the screw head 30 and the third sliding groove 32 on the mounting sleeve 27. The screw 19 passes through the second sliding groove 28 opened on the metal mounting shell 17. A limiting groove 31 is opened on the screw head 30, and the limiting groove 31 cooperates with the square limiting block 29.

[0031] The laying technique of the step bricks 1 in this invention is exactly the same as that used for laying existing ceramic tiles, and is therefore existing technology. A base mortar 2 is laid between the bricks and the substrate.

[0032] In this invention, the spring 26 is a compression spring 26 with preload. In the initial state, under the action of the spring 26, the mounting sleeve 27 is tightly attached to the inner wall surface of the metal mounting shell 17 where the first groove 39 is opened.

[0033] When installing the metal mounting shell 17, vertically insert the metal mounting shell 17 into the circular groove 21 cut in the step brick 1. After insertion, the two sharp corners of the bottom surface of the metal mounting shell 17 support the inner circular surface of the circular groove 21, and at this time the metal mounting shell 17 is exactly aligned with the square mounting groove 24. Push the metal mounting shell 17 to put it into the square mounting groove 24, and then fix the metal mounting shell 17 and the step brick 1 together with the fixing screws 16.

[0034] like Figure 9 As shown, uniformly distributed cylindrical protrusions 34 are fixedly installed on the outer circular surface of the metal sleeve 33, and an internal thread area 37 is provided on the inner circular surface of one end of the metal sleeve 33. The metal sleeve 33 is installed on the screw 19 through the engagement of the internal thread area 37 with the screw 19; Figure 8 As shown, an anti-slip post 15 is installed on the outer side of the metal sleeve 33, and the outer circular surface of the anti-slip post 15 protrudes through the circular groove 21 and is higher than the upper surface of the step brick 1.

[0035] In this invention, the inner circular surface of the metal sleeve 33 has only one section of internal thread area 37, while the other areas are only in contact with the screw 19. This design reduces the processing cost of the metal sleeve 33. The metal sleeve 33 and the anti-slip post 15 can be connected by evenly distributed cylindrical protrusions 34. When the metal sleeve 33 rotates, it can drive the anti-slip post 15 to rotate together through the cylindrical protrusions 34. The length of the cylindrical protrusions 34 ensures that after installation, the highest point of the protrusion 22 of the anti-slip post 15 cannot be higher than the upper surface of the step brick 1, preventing the anti-slip post 15 from breaking and causing the cylindrical protrusions 34 to be exposed, thus affecting people's normal walking.

[0036] In this invention, because the axis of the circular groove 21 is lower than the upper end of the step brick 1, the anti-slip post 15 is installed in the circular groove 21, and the outer circular surface of the anti-slip post 15 protrudes from the circular groove 21 and is higher than the upper end surface of the step brick 1; that is, the anti-slip post 15 is embedded in the circular groove 21, and the anti-slip post 15 will not slide out from the notch at the upper end of the circular groove 21; in this invention, the anti-slip post 15 is made of rubber material, and the anti-slip post 15 protruding from the upper end surface of the step brick 1 has an anti-slip effect, and is relatively safer than metal strips.

[0037] In this invention, a square groove 20 is provided on the lower side of the front end of the step brick 1 for the step brick 1 and the front stop brick 5 to cooperate. The square groove 20 can make the step brick 1 press against the front stop brick 5, thereby increasing the stability of the installation of the step brick 1 and the front stop brick 5.

[0038] The present invention has a raised area 22 on the lower side of the circular groove 21 of the step brick 1. The function of the raised area 22 is to increase the solidity of the step brick 1 at the circular groove 21, so that the circular groove 21 will not become thinner due to the opening of the circular groove 21, thus affecting its solidity.

[0039] The present invention provides an arc-shaped protrusion 22 on the upper side of the square mounting groove 24, which can increase the strength of the step brick 1 at this location.

[0040] When installing the anti-slip post 15, because the axis of the circular groove 21 is lower than the upper surface of the step brick 1, the anti-slip post 15 needs to be embedded in the circular groove 21. Therefore, the anti-slip post 15 can only be inserted from one side of the end face of the step brick 1 through the circular groove 21. However, because the anti-slip post 15 is made of rubber, it has a high coefficient of friction and is not easy to insert directly. It needs to be lubricated. However, during construction, there is a lot of dust in the site, and the lubricating oil will have reduced lubrication effect after being contaminated with dust, and it is also unsightly. In order to solve this problem, the present invention provides a design inside the anti-slip post 15. A metal sleeve 33 is provided, and evenly distributed cylindrical protrusions 34 are arranged between the metal sleeve 33 and the anti-slip post 15. When installing the anti-slip post 15, the metal sleeve 33 is rotated. Because the metal sleeve 33 is threadedly engaged with the screw 19, and the screw head 30 has a direct contact area with the mounting sleeve 27, the mounting sleeve 27 is slidably installed in the metal mounting shell 17 by the square limiting block 29. The metal mounting shell 17 limits the rotation of the mounting sleeve 27. Therefore, when the metal sleeve 33 rotates, under the action of the threaded engagement, the metal sleeve 33 will be subjected to a force from the screw 19. The internal tension, along with the outward tension of the metal sleeve 33 on the screw 19, causes the screw head 30 to press tightly against the inner wall of the outer side of the metal mounting shell 17. Under the tension of the screw 19, the metal sleeve 33 slides inward along the circular groove 21. The sliding of the metal sleeve 33 drives the anti-slip post 15 to slide through the cylindrical protrusion 34, and it rotates simultaneously during the sliding process, gradually screwing the anti-slip post 15 in. During the sliding process of the anti-slip post 15, when the anti-slip post 15 contacts the three push rods, the sliding of the anti-slip post 15 will push the three push rods, making... The three push rods cause the mounting sleeve 27 to move inward. However, because the screw 19 is pulled tightly against the inner wall of the metal mounting shell 17 by the metal sleeve 33, the mounting sleeve 27 will gradually disengage from the screw 19. When the mounting sleeve 27 is completely disengaged from the screw 19, it loses its rotational limitation on the screw head 30. At this time, the metal sleeve 33 continues to rotate and will drive the screw 19 to rotate together under the action of the thread. When the metal sleeve 33 is completely moved into the circular groove 21, it also indicates that the anti-slip post 15 is installed. The installation position of the three push rods in this invention does not affect the rotation of the screw head 30. That is, after the screw head 30 is disengaged from the mounting sleeve 27, there is still a gap between the three push rods and the screw head 30.

[0041] An adjustable structure 4 for a three-step anti-slip ceramic tile staircase, such as Figure 1 , 2As shown, it includes a handle 6, a first rotating shaft 7, a first support 8, a first gear 9, a second gear 10, a second support 11, a second rotating shaft 12, a third gear 13, and a fourth gear 14. The first rotating shaft 7 is rotatably mounted on the outer wall of the staircase 3 via multiple evenly distributed first supports 8, and a handle 6 is fixedly mounted on one end of the first rotating shaft 7. Multiple first gears 9 are evenly fixedly mounted on the first rotating shaft 7, and multiple second rotating shafts 12 are rotatably mounted on the outer wall of the staircase 3 via evenly distributed second supports 11. Each second rotating shaft 12 corresponds one-to-one with a step tile 1. Each shaft 12 has a second gear 10 fixedly installed at its lower end. The second gear 10 corresponds to and meshes with the first gear 9. Each second shaft 12 has a third gear 13 fixedly installed at its upper end. Each metal sleeve 33 has a hexagonal mounting head 35 at one end. An external threaded sleeve 36 is fixedly installed on the outside of the hexagonal mounting head 35. The inner wall of the fourth gear 14 is a hexagonal groove. The fourth gear 14 is installed on the hexagonal mounting head 35 through the hexagonal groove. A fastening nut 18 is installed on the external threaded sleeve 36. The fourth gear 14 corresponds to and meshes with the third gear 13.

[0042] In this invention, the adjustment structure 4 is installed after the step brick 1 is installed. The adjustment structure 4 is only used to replace the anti-slip surface after the anti-slip post 15 is worn. The adjustment structure 4 does not participate in the installation and disassembly process of the anti-slip post 15.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

[0044] Implementation: When using the step brick 1 designed in this invention, during the installation of the anti-slip post 15, the metal sleeve 33 is rotated. Because the metal sleeve 33 is threadedly engaged with the screw 19, there is a direct contact area between the screw head 30 and the mounting sleeve 27. The mounting sleeve 27 is slidably installed inside the metal mounting shell 17 by the square limiting block 29, and the metal mounting shell 17 limits the rotation of the mounting sleeve 27. Therefore, when the metal sleeve 33 rotates, under the action of the threaded engagement, the metal sleeve 33 will be subjected to an inward pulling force from the screw 19, and at the same time, the metal sleeve 33 will exert an outward pulling force on the screw 19, so that the screw head 30 is tightly pressed against the outer side of the metal mounting shell 17. On the inner wall surface, the metal sleeve 33 slides inward along the circular groove 21 under the pulling force of the screw 19. The sliding of the metal sleeve 33 drives the anti-slip post 15 to slide through the cylindrical protrusion 34, and rotates simultaneously during the sliding process, gradually screwing the anti-slip post 15 inward. During the sliding process of the anti-slip post 15, when the anti-slip post 15 contacts the three push rods, the sliding of the anti-slip post 15 will push the three push rods, causing the three push rods to move the mounting sleeve 27 inward. However, because the screw 19 is tightly attached to the inner wall surface of the metal mounting shell 17 due to the pulling force of the metal sleeve 33, the mounting sleeve 27 will gradually disengage from the screw 19. Figure 10 As shown, when the mounting sleeve 27 is completely disengaged from the screw 19, the mounting sleeve 27 loses its rotational limitation on the screw head 30. At this time, the metal sleeve 33 continues to rotate, and under the action of the thread, it will drive the screw 19 to rotate together. At this time, the metal sleeve 33 moves completely into the circular groove 21, which also indicates that the anti-slip post 15 is installed. The installation position of the three push rods in this invention does not affect the rotation of the screw head 30, that is, after the screw head 30 is disengaged from the mounting sleeve 27, there is still a gap between the three push rods and the screw head 30.

[0045] After a period of use, when the anti-slip post 15 wears out, shaking the handle 6 will cause the first rotating shaft 7 to rotate. The rotation of the first rotating shaft 7 will cause the first gear 9 to rotate, the rotation of the first gear 9 will cause the second gear 10 to rotate, the rotation of the second gear 10 will cause the second rotating shaft 12 to rotate, the rotation of the second gear 12 will cause the third gear 13 to rotate, the rotation of the third gear 13 will cause the fourth gear 14 to rotate, and the rotation of the fourth gear 14 will cause the metal sleeve 33 to rotate. The metal sleeve 33 will cause the anti-slip post 15 to rotate together, changing the area of ​​the anti-slip post 15 protruding from the circular groove 21.

[0046] When replacing the anti-slip post 15, manually keep the screw 19 stationary, then rotate the metal sleeve 33 to move it outward. During this outward movement, after the screw head 30 engages with the mounting sleeve 27, if the mounting sleeve 27 fails to align with the screw head 30, rotate the screw 19 to ensure a complete engagement between the screw head 30 and the mounting sleeve 27. While the screw head 30 is engaged with the mounting sleeve 27, continue to keep the screw 19 relatively stationary, but allow it to move inward. Simultaneously rotate the metal sleeve 33. At this point, the metal sleeve 33 will apply an inward thrust to the screw 19, while the screw 19 applies a force to the metal sleeve 33. There is an outward thrust, but since there is no restrictive structure for the inward and outward movement of the screw 19, in order to ensure that the screw 19 can continue to move inward, it is necessary to manually keep the inward and outward sliding of the metal sleeve 33 relatively stationary. When the limiting groove 31 on the screw 19 is fully engaged with the square limiting block 29 on the fixing screw 16, the restriction on the inward and outward sliding of the metal sleeve 33 is removed. At this time, the rotation and inward movement of the screw 19 are limited by the fixing screw 16. Therefore, during the subsequent rotation of the metal sleeve 33, the metal sleeve 33 will move outward relative to the circular groove 21 under the action of the thread. The outward movement of the metal sleeve 33 drives the anti-slip post 15 to move outward until it is finally removed.

Claims

1. A stair nosing tile, characterized by: It includes a stepping stone, anti-slip posts, a metal mounting shell, a screw, a top plate, a spring, a metal sleeve, and a mounting slide sleeve. The metal mounting shell is detachably installed inside the stepping stone by fixing screws and is located on the front end of the stepping stone near the wall. The mounting slide sleeve is slidably installed inside the metal mounting shell, and the metal mounting shell limits the rotation of the mounting slide sleeve. Three top plates are circumferentially and evenly fixedly installed on one end face of the mounting slide sleeve, and the top plates protrude from the outside of the metal mounting shell. A spring is installed between the other end of the mounting slide sleeve and the inner end face of the metal mounting shell. One end of the screw is slidably installed inside the mounting slide sleeve, and the mounting slide sleeve limits the rotation of the screw. The metal sleeve is installed on the screw by threaded engagement, and an anti-slip post is installed on the outside of the metal sleeve.

2. A stair nosing tile according to claim 1, wherein: The lower front side of the step brick has a square groove for mating with the front stop brick; the upper front surface of the step brick has a circular groove for installing an anti-slip post, the circular groove being a notched groove with its axis lower than the upper surface of the step brick; the outer surface of the anti-slip post extends out of the circular groove and is higher than the upper surface of the step brick; one end of the circular groove extends out of the end face of the step brick, and the other end of the circular groove has a square mounting groove for installing a metal mounting shell, the upper side of which has an arc-shaped protrusion; one side of the square mounting groove has a first threaded hole, and one end of the metal mounting shell has a second threaded hole; the fixing screw passes through the first threaded hole and then connects with the second threaded hole on the metal mounting shell through thread engagement, thus fixing the metal mounting shell to the step brick.

3. The stair nosing tile according to claim 1, wherein: The metal mounting shell has three circumferentially evenly distributed first sliding grooves and a second sliding groove in the middle circular shape at one end; the inner cavity of the metal mounting shell is a square cavity, and one end of the mounting sleeve has a square limiting block; the mounting sleeve is slidably installed in the metal mounting shell through the square limiting block; the mounting sleeve has a through third sliding groove with straight surfaces on both sides in the middle; one end of the screw has a screw head, and the screw head has symmetrically distributed straight surfaces; the screw is slidably connected to the mounting sleeve through the sliding fit between the straight surfaces on the screw head and the third sliding groove on the mounting sleeve; the screw passes through the second sliding groove on the metal mounting shell, and the three top plates are arc-shaped, passing through the three first sliding grooves.

4. A stair nosing tile according to claim 3, wherein: The end of the fixing screw has a square limiting block, and a limiting groove is opened on the screw head, which cooperates with the square limiting block.

5. The stair tread slip-resistant tile of claim 1, wherein: The outer circular surface of the metal sleeve is fixedly equipped with evenly distributed cylindrical protrusions.

6. A stair tread slip-resistant tile according to claim 1, wherein: The metal sleeve has an internal thread area on its inner circular surface at one end, and the metal sleeve is installed on the screw through the engagement of the internal thread area with the screw.

7. The adjusting structure for the stair tread anti-skid tile according to claim 1, wherein: It includes a handle, a first rotating shaft, a first support, a first gear, a second gear, a second support, a second rotating shaft, a third gear, and a fourth gear. The first rotating shaft is rotatably mounted on the outer wall of the staircase via multiple evenly distributed first supports, and a handle is fixedly mounted on one end of the first rotating shaft. Multiple first gears are evenly fixedly mounted on the first rotating shaft, and multiple second rotating shafts are rotatably mounted on the outer wall of the staircase via evenly distributed second supports. Each second rotating shaft corresponds one-to-one with a step tile. A second gear is fixedly mounted on the lower end of each second rotating shaft, and the second gear corresponds one-to-one with the first gear and meshes with it. A third gear is fixedly mounted on the upper end of each second rotating shaft, and a fourth gear is mounted on each metal sleeve, and the fourth gear corresponds one-to-one with the third gear and meshes with it.

8. The adjustable structure for anti-slip ceramic tiles for stair treads according to claim 7, characterized in that: Each metal sleeve has a hexagonal mounting head at one end, and an external threaded sleeve is fixedly installed on the outside of the hexagonal mounting head. The inner wall of the fourth gear is a hexagonal groove, and the fourth gear is installed on the hexagonal mounting head through the hexagonal groove. A fastening nut is installed on the external threaded sleeve.

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