Non-slip material for stairs

Abstract

To provide a more reliable non-slip material for a staircase that is capable of preventing a cap member from coming out of a base member even if large force is applied to a cover wall of the cap member.SOLUTION: A second engagement part E2 which joins a lower end of a hanging part 9 of a base member 6 and a lower end of a front vertical wall 25 of a cap member 7 consists of: a hook-shaped downward recessed part 22 which is formed at the lower end of the hanging part 9 of the base member 6, and has an opening 21 upward; and a downward projection part 28 which is formed at the lower end of the front vertical wall 25 of the cap member 7, and is inserted into the downward recessed part 22 from above through the opening 21.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a non-slip material that is attached to the tip of a staircase's treads to prevent slipping. [Background technology]

[0002] The non-slip material according to the present invention comprises a metal base member, approximately L-shaped, fixed to a corner located above the front end of a step, and a synthetic resin cap member, approximately L-shaped, attached to cover the base member. A non-slip material having the above-described configuration is known, for example, from Patent Document 1. The base member (L-shaped metal fitting) in Patent Document 1 comprises a horizontal portion that fits along the top surface of a carpet or other covering placed on the step, and a hanging portion that extends downward from the front end of the horizontal portion (see Figure 2 of Patent Document 1). The horizontal portion has through-holes, and the base member and the covering are fixed to the step with wood screws that are threaded through the through-holes. The upper surface of the rear end of the horizontal portion has an upward convex portion (hooking convex portion) that faces rearward, and the front surface of the lower end of the hanging portion has an approximately U-shaped downward convex portion (hooking convex portion) with a downward opening. The cap member (non-slip member) comprises a cover wall that fits along the top surface of the horizontal portion of the base member and a front vertical wall that fits along the front surface of the hanging portion of the base member. The rear end of the cover wall is formed with a hook-shaped upper recess (engagement portion) with an opening at the front that engages with the upper convex portion. The lower end of the front vertical wall is formed with a hook-shaped lower recess (engagement portion) that extends rearward and then bends upward to engage with the lower convex portion. The tip of the lower recess is directed upward and is adapted to engage with the lower opening of the lower convex portion. In other words, the lower recess of the cap member wraps around from below to cover the lower convex portion of the base member and engages with the lower convex portion.

[0003] When attaching the cap member to the base member, first engage the upper recess with the upper convex portion, then move the cap member downward around the engagement of these recesses, aligning the cover wall with the upper surface of the horizontal portion and the front vertical wall with the front surface of the hanging portion. Next, engage the lower recess with the lower convex portion. At this time, wrap the lower recess around from below to cover the lower convex portion, and insert the tip of the lower recess into the lower opening of the lower convex portion, thereby attaching and fixing the cap member to the base member.

[0004] The longitudinal middle portion of the cap member, excluding the portions where the upper and lower recesses are formed, is made of a soft synthetic resin. Therefore, when engaging the lower recess, the middle portion can be stretched to more easily engage the lower recess with the lower convex portion. After engaging the lower recess, the restoring force of the middle portion pulls the lower recess upward, allowing the lower recess to engage more firmly with the lower convex portion. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Microfilm of Utility Model Application No. 57-23761 (Utility Model Application No. 58-126322) Summary of the Invention [Problem to be solved by the invention]

[0006] In the non-slip material of Patent Document 1, when a large external force is applied to the cover wall of the cap member, such as when the cover wall is stepped on, the cover wall deforms so that it spreads forward and backward, and the front vertical wall displaces downward, which results in the lower concave portion disengaging from the lower convex portion, and there is a risk that the cap member will come off the base member. This is even more pronounced when the longitudinal center portion of the cap member is made of a soft synthetic resin as described above, and because the cover wall made of a soft synthetic resin deforms more greatly, the front vertical wall easily displaces downward, which results in the lower concave portion disengaging from the lower convex portion, and there is a risk that the cap member will come off the base member.

[0007] To provide a more reliable non-slip material for stairs that can prevent a cap member from coming off a base member even when a large force is applied to the cover wall of the cap member. [Means for solving the problem]

[0008] The present invention relates to a non-slip material 1 that is attached to a corner portion 5 located above the front of a staircase 2. The non-slip material 1 has a horizontal portion 8 that is received on the upper surface 3 of the staircase 2 and a hanging portion 9 that extends downward from the front end of the horizontal portion 8. The non-slip material 1 is made of a metal base member 6 that is elongated and has an L-shaped cross section and is fixed to the corner portion 5 of the staircase 2. The non-slip material 1 also has a cover wall 24 that fits along the top surface of the horizontal portion 8 and a front vertical wall 25 that fits along the front surface of the hanging portion 9. The non-slip material 1 is also made of a resin that is elongated and has an L-shaped cross section and is attached to the base member 6 via an engagement structure. The engagement structure has a first engagement portion E1 that joins the rear end of the horizontal portion 8 of the base member 6 to the rear end of the cover wall 24 of the cap member 7, and a second engagement portion E2 that joins the lower end of the hanging portion 9 of the base member 6 to the lower end of the front vertical wall 25 of the cap member 7. The first engagement portion E1 is composed of an upper protrusion 12 formed in a cantilever shape extending rearward from the rear end of the horizontal portion 8 of the base member 6, and a hook-shaped upper recess 27 formed at the rear end of the cover wall 24 of the cap member 7 and having an opening 26 at the front. . The engaging portion E2 is formed at the lower end of the hanging portion 9 of the base member 6 and is composed of a hook-shaped lower recess 22 having an opening 21 at the top, and a lower protrusion 28 formed at the lower end of the front vertical wall 25 of the cap member 7 and inserted into the lower recess 22 from above through the opening 21. The front end of horizontal portion 8 constituting base member 6 is provided with protrusion 13, which protrudes further forward than the front surface of hanging portion 9. The underside of protrusion 13 forms stopper surface 14 that prevents cap member 7 from coming off. The upper and lower surfaces of protrusion 13 are horizontal, and protrusion 13 protrudes straight forward. A recess 29 that receives protrusion 13 is recessed into the corner portion at the boundary between cover wall 24 and front vertical wall 25 of cap member 7, and when cap member 7 is engaged and attached to base member 6, the front end surface, upper surface, and lower surface of protrusion 13 are out of contact with the front inner surface of recess 29.

[0009] The cap member 7 is made of a soft plastic base with a reinforcing portion 30 partially made of hard plastic that is harder than the soft plastic, and at least the upper recess 27 and the lower protrusion 28 are made of hard plastic.

[0010] Except for the central portion in the front-to-back direction of the cover wall 24, reinforcing portions 30 (30c, 30a) made of hard plastic are formed to sandwich the central portion, and easily deformable portions 31 made of soft plastic are formed between these reinforcing portions 30 (30c, 30a).

[0012] The upper front corner 16 of the protrusion 13 is formed in an R-shape. [Effects of the Invention]

[0014] In the non-slip material 1 according to the present invention, the second engagement portion E2 joining the lower end of the hanging portion 9 of the base member 6 and the lower end of the front vertical wall 25 of the cap member 7 is composed of a hook-shaped lower recess 22 having an opening 21 at its upper end, which is formed at the lower end of the hanging portion 9 of the base member 6, and a lower protrusion 28 formed at the lower end of the front vertical wall 25 of the cap member 7 and inserted into the lower recess 22 from above via the opening 21. With this configuration, when a large external force that pushes the cover wall 24 downward is applied to the cover wall 24 of the cap member 7, for example, when the cover wall 24 is stepped on, the front vertical wall 25 will attempt to move downward, but this downward movement of the front vertical wall 25 will be restricted by the lower recess 22 formed at the lower end of the hanging portion 9 of the base member 6. Furthermore, the more the lower protrusion 28 attempts to move downward, the deeper the lower protrusion 28 will penetrate into the lower recess 22, resulting in a more tight engagement of the lower protrusion 28 with the lower recess 22. As described above, according to the present invention, even if an external force is applied in a direction that pushes the cover wall 24 downward, the engagement between the lower convex portion 28 and the lower concave portion 22 is released, preventing the cap member 7 from coming off the base member 6, thereby providing a more reliable non-slip material 1 for stairs.

[0015] If at least the upper recess 27 and the lower protrusion 28 are made of hard plastic, deformation of the upper recess 27 or the lower protrusion 28 can be prevented, which would cause the disengagement between the upper protrusion 12 and the lower recess 22 of the base member 6. This prevents the cap member 7 from coming off the base member 6, making it possible to obtain a more reliable non-slip material 1 for stairs.

[0016] Except for the central portion in the front-to-rear direction of cover wall 24, reinforcing portions 30 (30c-30a) made of hard plastic are formed to sandwich this central portion, and easily deformable portions 31 made of soft plastic are formed between these reinforcing portions 30 (30c-30a), so that cover wall 24 can be bent from the central portion of cover wall 24 where easily deformable portions 31 are formed. This makes it easier to cover front vertical wall 25 of cap member 7 over hanging portion 9 of base member 6, and makes it easier to attach cap member 7 to base member 6.

[0017] A protrusion 13 is formed at the front end of the horizontal portion 8 that constitutes the base member 6, extending forward beyond the front surface of the hanging portion 9, and a recessed portion 29 that receives the protrusion 13 is recessed into the corner portion at the boundary between the cover wall 24 and the front vertical wall 25 of the cap member 7, and the underside of the protrusion 13 is formed as a removal prevention surface 14 that prevents the cap member 7 from coming off.For example, even if an external force is applied that pushes up the front vertical wall 25 of the cap member 7, the lower surface of the recessed portion 29 of the cap member 7 engages with the underside of the protrusion 13, which is the removal prevention surface 14, thereby restricting the upward movement of the front vertical wall 25 of the cap member 7 and preventing the engagement between the lower recess 22 and the lower convex portion 28 from being inadvertently released.

[0018] If the corner portion 16 on the front upper side of the protrusion 13 is formed in an R-shape, the protrusion 13 can be more easily guided into the recessed portion 29. Therefore, the cap member 7 can be more easily attached to the base member 6.

[0019] When the cap member 7 is engaged and attached to the base member 6, if the front end face of the protrusion 13 is not in contact with the front side of the inner surface of the recessed portion 29, a gap S can be formed between the two (the protrusion 13 and the recessed portion 29). As a result, even if an impact is applied to the cap member 7 from the front, for example, the deformation of the cap member 7 due to the impact can be absorbed by the gap S, and a non-slip material 1 with even better impact absorption capacity can be obtained. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a longitudinal side view of a non-slip material for stairs according to an embodiment of the present invention. [Figure 2] FIG. 10 is a perspective view showing the non-slip material attached to stairs. [Figure 3] 10A and 10B are enlarged longitudinal side views showing the main parts of the non-slip material, where (a) shows a longitudinal side view of the second joint portion, and (b) shows a longitudinal side view of the first joint portion. [Figure 4] FIG. 2 is a vertical cross-sectional side view showing a base member and a cap member that constitute the non-slip material. [Figure 5] 1A is a vertical cross-sectional side view of the front end of the cap member, and FIG. 1B is a vertical cross-sectional side view of the front end of the base member. [Figure 6] 10(a) to 10(c) are diagrams illustrating a method for attaching a cap member to a base member. DETAILED DESCRIPTION OF THE INVENTION

[0021] (Embodiment) Figures 1 to 6 show an embodiment of a non-slip material for stairs according to the present invention. In this embodiment, front, back, left, right, and up and down refer to the crossed arrows shown in Figures 1 and 2 and the indications of front, back, left, right, and up and down written near each arrow. As shown in Figure 2, a staircase 2 to which a non-slip material 1 of this embodiment is applied is a concrete molded product having a plurality of treads (upper surfaces of the staircase 2) 3 formed at a predetermined height and a riser surface 4 formed vertically from the inner end of each tread 3. The non-slip material 1 is attached to a corner portion 5 located above the front side of the staircase 2.

[0022] As shown in Figures 1 and 4, the non-slip material 1 is composed of a base member 6 and a cap member 7 that is engaged and attached to the base member 6. The base member 6 is a long, L-shaped metal molded product (strip) in a vertical cross-sectional side view. The base member 6 has a flat horizontal portion 8 that is received on the tread 3 of the staircase 2, and a hanging portion 9 that extends downward from the front end of the horizontal portion 8 and is received on the riser surface 4. Through holes 11 for screws 10 are opened at predetermined intervals in the left-right direction in the center of the horizontal portion 8 in the front-to-rear direction. An engagement protrusion (upper convex portion) 12 is formed at the rear end of the horizontal portion 8 to engage and attach the cap member 7 to the base member 6. The engagement protrusion 12 is formed continuous with the rear end of the horizontal portion 8 and protrudes rearward in a cantilevered manner. The engagement protrusion 12 is provided along the entire length of the horizontal portion 8 in the left-to-right direction.

[0023] 3 to 5, a protrusion 13 is provided at the front end of horizontal portion 8, extending forward beyond the front surface of hanging portion 9 and spanning the entire length of horizontal portion 8 in the left-right direction. The lower surface of protrusion 13, located forward of hanging portion 9, serves as a retaining surface 14 for preventing inadvertent removal of cap member 7. To improve the retaining effect, a corner 15 on the lower front side of protrusion 13 is formed in a right angle. On the other hand, a corner 16 on the upper front side of protrusion 13 is formed in an R-shape.

[0024] Hanging portion 9 comprises a curved upper half portion 18 that extends downward from horizontal portion 8 and bulges forward, and a lower half portion 19 that continues downward from below upper half portion 18 and has a straight surface on its rear side that contacts riser surface 4. A locking wall 20 that protrudes upward and forward is formed at the lower end of lower half portion 19, and an engagement recess (lower recess) 22 that has an opening 21 at the top and is hook-shaped in vertical cross-section when viewed from the side is formed between the rear surface of locking wall 20 and the front surface of lower half portion 19. This engagement recess 22 is provided over the entire length of hanging portion 9 in the left-right direction.

[0025] The cap member 7 is an elongated resin molded product formed in an L-shape in a longitudinal cross-sectional view, and includes a cover wall 24 that covers the upper surface of the horizontal portion 8 of the base member 6 and a front vertical wall 25 that fits along the front surface of the hanging portion 9 of the base member 6. The rear end of the cover wall 24 has an opening 26 at the front and a mounting groove (upper recess) 27 that is hook-shaped in a longitudinal cross-sectional view and receives the engaging protrusion 12, and the mounting groove 27 is provided over the entire length in the left-right direction. The lower end of the front vertical wall 25 has a locking leg piece (lower protrusion) 28 that is inserted into the engaging recess 22 of the hanging portion 9 of the base member 6, and the locking leg piece 28 is provided over the entire length in the left-right direction. The engaging protrusion 12 of the base member 6 and the mounting groove 27 of the cap member 7 form a first joint E1. The engaging recess 22 of the base member 6 and the locking leg piece 28 of the cap member 7 form a second joint E2.

[0026] A recess 29 for receiving the protrusion 13 of the base member 6 is recessed into the inner corner of the boundary between the cover wall 24 and the front vertical wall 25 of the cap member 7. The inner surface of the recess 29 has a partial arc shape in a vertical cross-sectional side view. The recess 29 is provided over the entire length in the left-right direction. As shown in FIG. 3, when the cap member 7 is engaged and attached to the base member 6, the lower surface (retaining surface 14) and the front end surface of the protrusion 13 are not in contact with the inner surface of the recess 29, and a gap S is formed between them (the protrusion 13 and the recess 29).

[0027] The cap member 7 is made of a soft plastic as a base, and is partially formed with reinforcing portions 30 made of hard plastic that is harder than the soft plastic. As shown in FIG. 4, in this embodiment, the hard plastic is provided at three locations: a location including the mounting groove 27 at the rear end of the cover wall 24 (first reinforcing portion 30a), a location including the locking leg piece 28 at the lower end of the front vertical wall 25 (second reinforcing portion 30b), and a location near the front end of the cover wall 24 (third reinforcing portion 30c). and others The front end of the first reinforcing part 30a does not reach the rear end of the third reinforcing part 30c, and an easily deformable part 31 made of soft plastic is formed in the central part in the front-rear direction of the cover wall 24 between the first reinforcing part 30a and the third reinforcing part 30c.

[0028] Next, a method for constructing the non-slip material 1 will be described with reference to FIG. 6. First, the base member 6 is fastened to the corner portion 5 of the staircase 2 using screws 10. At this time, the horizontal portion 8 contacts the tread surface 3, and the hanging portion 9 contacts the riser surface 4. Next, as shown in FIG. 6(a), the mounting groove 27 of the cap member 7 is engaged with the engaging protrusion 12 of the base member 6 to establish a temporary fastening state. At this time, the locking leg 28 at the lower end of the front vertical wall 25 of the cap member 7 is positioned above the protrusion 13 at the front end of the horizontal portion 8 of the base member 6. Next, from the temporarily fastened state, as shown in FIG. 6(b), the cover wall 24 is slightly flexed and deformed, displacing the locking leg 28 at the lower end of the front vertical wall 25 of the cap member 7 forward of the protrusion 13. At this time, the cover wall 24 deforms from the easily deformable portion 31 made of soft plastic, which is sandwiched between the front and rear reinforcing portions 30 (the third reinforcing portion 30c and the first reinforcing portion 30a). Furthermore, the rounded corner 16 on the upper front side of the protrusion 13 allows the locking leg 28 to easily climb over the protrusion 13. Next, as shown in FIG. 6(c), the front end of the cap member 7 is pushed downward around the engagement between the engagement protrusion 12 and the mounting groove 27, and as shown in FIG. 1, the locking leg 28 of the cap member 7 is inserted all the way into the inner end (lower end) of the engagement recess 22 of the base member 6. This establishes a concave-convex engagement between the engagement protrusion 12 and the mounting groove 27, and also establishes a concave-convex engagement between the locking leg 28 and the engagement recess 22. Due to these two concave-convex engagements, the cap member 7 is securely engaged with the base member 6, thereby forming the non-slip material 1. Furthermore, as shown in FIG. 3, when the cap member 7 is engaged with the base member 6, the lower surface (retaining surface 14) and the front end surface of the protrusion 13 are not in contact with the inner surface of the recess 29.

[0029] In the non-slip material 1 according to the present embodiment, when a large external force is applied to the cover wall 24 of the cap member 7, such as when the cover wall 24 is stepped on, the cover wall 24 tends to deform and expand from front to back, causing the front vertical wall 25 to move downward. However, this downward movement of the front vertical wall 25 is absorbed by the engaging recess 22 formed at the lower end of the hanging portion 9 of the metal base member 6. Furthermore, the more the front vertical wall 25 moves downward, the deeper the locking leg 28 formed at the lower end of the front vertical wall 25 penetrates into the engaging recess 22, resulting in a more secure engagement between the locking leg 28 and the engaging recess 22. As described above, according to the non-slip material 1 according to the present embodiment, even when an external force is applied in a direction that pushes the cover wall 24 of the cap member 7 downward, the engagement between the locking leg 28 and the engaging recess 22 is released, preventing the cap member 7 from coming off the base member 6. This results in a more reliable non-slip material 1 for stairs.

[0030] Because the mounting groove 27 and the locking leg pieces 28 are made of hard plastic, it is possible to prevent the disengagement between the engaging projections 12 and the engaging recesses 22 of the base member 6 due to deformation of the mounting groove 27 or the locking leg pieces 28. This prevents the cap member 7 from coming off the base member 6, making it possible to obtain a more reliable non-slip material 1 for stairs.

[0031] Except for the central portion in the front-to-rear direction of cover wall 24, reinforcing portions 30a and 30c made of hard plastic are formed to sandwich this central portion, thereby forming easily deformable portion 31, so that cover wall 24 can be easily bent from easily deformable portion 31. Therefore, the operation of covering front vertical wall 25 of cap member 7 with hanging portion 9 of base member 6 can be more easily carried out, and cap member 7 can be more easily engaged and attached to base member 6.

[0032] A protrusion 13 is formed at the front end of the horizontal portion 8 constituting the base member 6, extending forward beyond the front surface of the hanging portion 9, and a retaining surface 14 is formed on the underside of the protrusion 13 to prevent the cap member 7 from coming off. A recess 29 for receiving the protrusion 13 is recessed into a corner portion at the boundary between the cover wall 24 and the front vertical wall 25 of the cap member 7. With these features, even if an external force is applied that pushes up the front vertical wall 25 of the cap member 7, the lower part of the recess 29 of the cap member 7 engages with the underside of the protrusion 13, which is the retaining surface 14, thereby restricting upward movement of the front vertical wall 25 of the cap member 7 and preventing inadvertent release of the engagement between the engagement recess 22 and the locking leg 28. Additionally, since the mounting groove 27 and the locking leg 28 of the cap member 7 are made of hard plastic and the other portions are made of soft plastic, the corner portion at the boundary between the cover wall 24 and the front vertical wall 25 of the cap member 7 can be made of soft plastic. This prevents the recessed portion 29 formed in the corner portion for receiving the protrusion 13 from coming into contact with the protrusion 13 and being damaged. In addition, the flexibility and shock absorption properties of soft plastic can absorb external shocks and prevent damage to the recessed portion 29. Incidentally, if the recessed portion 29 were made of hard plastic, it would not be able to absorb the shock and there would be a risk of damage.

[0033] If the upper front corner of the protrusion 13 is formed in an R-shape, the protrusion 13 can be more easily guided into the recess 29. Therefore, the cap member 7 can be more easily attached to the base member 6.

[0034] When the cap member 7 is engaged and attached to the base member 6, if the front end face of the protrusion 13 is not in contact with the inner surface of the recess 29, a gap S can be formed between the two (the protrusion 13 and the recess 29). As a result, even if an impact is applied to the cap member 7 from the front, for example, the gap S can absorb the deformation of the cap member 7 caused by the impact, and a non-slip material 1 with even better impact absorption capacity can be obtained.

[0035] The stairs to which the non-slip material 1 of the present invention is attached are not limited to stairs 2 made of concrete. [Explanation of symbols]

[0036] 1 Non-slip material 2 stairs 3 Top of the stairs (tread) 5 Corner section 6 Base material 7 Cap member 8 Horizontal part 9 Drooping part 12 Upper convex part (engaging protrusion) 13 Protrusion 14 Retaining surface 16 Upper front corner of protrusion 21 Aperture 22 Lower recess (engagement recess) 26 Aperture 27 Upper recess (mounting groove) 28 Lower convex part (locking leg piece) 29 Otoribe 30 Reinforcement 31 Easily deformable part E1 1st engagement part E2 Second engagement part S void

Claims

1. A non-slip material attached to a corner portion (5) located at the front upper side of a staircase (2), a horizontal portion (8) that is received on the upper surface (3) of the stairs (2) and a hanging portion (9) that extends downward from the front end of the horizontal portion (8); and a metal base member (6) that is L-shaped in cross section and is fixed to a corner portion (5) of the stairs (2); The cap member (7) is made of resin and has an L-shaped cross section and is elongated from side to side, and has a cover wall (24) that fits along the top surface of the horizontal portion (8) and a front vertical wall (25) that fits along the front surface of the hanging portion (9). The cap member (7) is engaged with and attached to the base member (6) via an engaging structure. The engagement structure has a first engagement portion (E1) that joins the rear end of the horizontal portion (8) of the base member (6) to the rear end of the cover wall (24) of the cap member (7), and a second engagement portion (E2) that joins the lower end of the hanging portion (9) of the base member (6) to the lower end of the front vertical wall (25) of the cap member (7), The first engagement portion (E1) is composed of an upper convex portion (12) formed by projecting rearward in a cantilevered manner from the rear end of the horizontal portion (8) of the base member (6), and a hook-shaped upper concave portion (27) having an opening (26) at the front and formed at the rear end of the cover wall (24) of the cap member (7), The second engaging portion (E2) is composed of a hook-shaped lower recess (22) having an opening (21) at the top, which is formed at the bottom end of the hanging portion (9) of the base member (6), and a lower protrusion (28) which is formed at the bottom end of the front vertical wall (25) of the cap member (7) and is inserted from above into the lower recess (22) through the opening (21), A protrusion (13) is provided at the front end of the horizontal portion (8) constituting the base member (6), and the protrusion (13) is formed to protrude forward beyond the front surface of the hanging portion (9), The lower surface of the protrusion (13) is a retaining surface (14) that prevents the cap member (7) from coming off, The upper and lower surfaces of the protrusion (13) are horizontal, and the protrusion (13) is formed to protrude straight forward. A non-slip material for stairs is characterized in that a recess (29) for receiving a protrusion (13) is recessed into the corner portion at the boundary between the cover wall (24) and the front vertical wall (25) of the cap member (7), and when the cap member (7) is engaged and attached to the base member (6), the front end face, upper face, and lower face of the protrusion (13) are in a non-contact state with the front inner face of the recess (29).

2. The cap member (7) is made of a soft plastic base with a reinforcing portion (30) partially formed thereon, the reinforcing portion being made of a hard plastic having a higher hardness than the soft plastic, 2. The non-slip material for stairs according to claim 1, wherein at least the upper recess (27) and the lower protrusion (28) are made of hard plastic.

3. A non-slip material for stairs as described in claim 2, wherein reinforcing sections (30 (30c, 30a)) made of hard plastic are formed to sandwich the central section of the cover wall (24) except for the central section in the front-to-back direction, and easily deformable sections (31) made of soft plastic are formed between these reinforcing sections (30 (30c, 30a)).

4. A non-slip material for stairs as described in claim 1, wherein the front upper corner portion of the protrusion (13) is formed in an R shape.

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