Non-slip material for staircase

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 attached to the tip of a tread plate constituting a staircase.

Background Art

[0002] The non-slip material according to the present invention includes a substantially L-shaped metal base member fixed to a corner portion located above the front end of the tread plate, and a substantially L-shaped synthetic resin cap member attached so as to cover the base member. The non-slip material having the above configuration is known, for example, from Patent Document 1. The base member (L-shaped metal fitting) of Patent Document 1 includes a horizontal portion along the upper surface of a rug or the like laid on the tread plate, and a vertical portion extending downward from the front end of the horizontal portion (see FIG. 2 of Patent Document 1). Through holes are formed in the horizontal portion, and the base member is fixed to the tread plate together with the rug by wood screws screwed into the tread plate through the through holes. On the upper surface of the rear end of the horizontal portion, an upward convex portion (engaging convex portion) facing rearward is formed, and on the front surface of the lower end of the vertical portion, a substantially U-shaped downward convex portion (engaging convex portion) having a downward opening is formed. The cap member (anti-slip member) includes a cover wall along the upper surface of the horizontal portion of the base member and a front vertical wall along the front surface of the vertical portion of the base member. At the rear end of the cover wall, a hook-shaped upper concave portion (locking portion) having an opening facing forward and engaging with the upward convex portion is formed. At the lower end of the front vertical wall, a hook-shaped lower concave portion (locking portion) having an opening facing rearward is formed, which extends rearward and then bends upward to engage with the downward convex portion. The tip of the lower concave portion points upward, and this tip is engaged with the downward opening of the downward convex portion. In other words, the lower concave portion of the cap member wraps around from the lower side so as 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 concave portion with the upper convex portion, then displace the cap member downward with the engagement portion of these concavities and convexities as the center, align the cover wall along the upper surface of the horizontal portion, and align the front vertical wall along the front surface of the vertical portion. Next, engage the lower concave portion with the lower convex portion. At this time, by wrapping the lower concave portion from the lower side so as to cover the lower convex portion and causing the tip of the lower concave portion to enter the lower opening of the lower convex portion, the cap member can be attached and fixed to the base member.

[0004] The intermediate portion in the longitudinal direction of the cap member, excluding the formation locations of the upper concave portion and the lower concave portion, is formed of a soft synthetic resin. Therefore, when engaging the lower concave portion, by stretching the intermediate portion, the lower concave portion can be more easily engaged with the lower convex portion. Also, after the engagement of the lower concave portion, the lower concave portion is pulled upward by the restoring force of the intermediate portion, so that the lower concave portion can be more firmly engaged with the lower convex portion.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the non-slip material of Patent Document 1, when a large external force acts on the cover wall, such as when the cover wall of the cap member is stepped on, the cover wall deforms so as to spread back and forth, and the front vertical wall is displaced downward. As a result, the engagement state of the lower concave portion with respect to the lower convex portion is released, and there is a risk that the cap member may come off from the base member. This becomes more prominent when the central portion in the longitudinal direction of the cap member is formed of a soft synthetic resin as described above. Since the cover wall made of a soft synthetic resin deforms more greatly, the front vertical wall is easily displaced downward. As a result, the engagement state of the lower concave portion with respect to the lower convex portion is released, and there is a risk that the cap member may come off from the base member.

[0007] An object of the present invention is to provide a non-slip material for stairs with higher reliability that can prevent a cap member from coming off from a base member even when a large force is applied to a cover wall of the cap member.

Means for Solving the Problems

[0008] The present invention is directed to a non-slip material 1 mounted on a corner portion 5 located above the front side of a staircase 2. The non-slip material 1 has a horizontal portion 8 received on an upper surface 3 of the staircase 2 and a vertical portion 9 extending downward from a front end of the horizontal portion 8, and includes a horizontally long, L-shaped cross-section, metal base member 6 fixed to the corner portion 5 of the staircase 2, a cover wall 24 along an upper surface of the horizontal portion 8, and a front vertical wall 25 along a front surface of the vertical portion 9, and an L-shaped cross-section, horizontally long resin cap member 7 engaged and attached to the base member 6 via an engagement structure. The engagement structure has a first engagement portion E1 that joins a rear end of the horizontal portion 8 of the base member 6 and a rear end of the cover wall 24 of the cap member 7, and a second engagement portion E2 that joins a lower end of the vertical portion 9 of the base member 6 and a lower end of the front vertical wall 25 of the cap member 7. The first engagement portion E1 is composed of an upward convex portion 12 formed to project rearward in a cantilever shape from the rear end of the horizontal portion 8 of the base member 6 and a hook-shaped upward concave portion 27 formed at the rear end of the cover wall 24 of the cap member 7 and having an opening 26 facing forward. And the second engagement portion E2 is characterized by being composed of a hook-shaped downward concave portion 22 formed at the lower end of the vertical portion 9 of the base member 6 and having an opening 21 facing upward and a downward convex portion 28 formed at the lower end of the front vertical wall 25 of the cap member 7 and inserted into the downward concave portion 22 from above through the opening 21.

[0009] The cap member 7 is formed with a reinforcing portion 30 made of a hard plastic having a higher hardness than the soft plastic in part, based on the soft plastic, and at least the upper concave portion 27 and the lower convex portion 28 are formed of the hard plastic.

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

[0011] At the front end of the horizontal portion 8 constituting the base member 6, a protruding portion 13 is provided which protrudes forward from the front surface of the hanging portion 9. A recessed portion 29 for receiving the protruding portion 13 is formed by being recessed at the corner portion related to the boundary between the cover wall 24 and the front vertical wall 25 of the cap member 7. The lower surface of the protruding portion 13 serves as a retaining surface 14 for preventing the cap member 7 from coming off.

[0012] The corner portion 16 above the front side of the protruding portion 13 is formed in an R shape.

[0013] In a state where the cap member 7 is engaged and attached to the base member 6, the front end surface of the protruding portion 13 is in a non-contact state with the inner surface on the front side of the recessed portion 29.

Advantages of the Invention

[0014] In the non-slip material 1 according to the present invention, a second engaging portion E2 that joins 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 formed at the lower end of the hanging portion 9 of the base member 6 and has an upward opening 21. It is composed of a hook-shaped lower concave portion 22 and a lower convex portion 28 formed at the lower end of the front vertical wall 25 of the cap member 7 and inserted into the lower concave portion 22 from above through the opening 21. According to this, for example, when a large external force that pushes the cover wall 24 downward, such as when the cover wall 24 of the cap member 7 is stepped on, acts on the cover wall 24, the front vertical wall 25 tries to move downward, but the downward movement of the front vertical wall 25 is restricted by the lower concave portion 22 formed at the lower end of the hanging portion 9 of the base member 6. Also, the more the lower convex portion 28 tries to move downward in this way, the deeper the lower convex portion 28 enters the lower concave portion 22, and as a result, the lower convex portion 28 is more firmly engaged with the lower concave portion 22. From the above, according to the present invention, even when an external force acts in the direction of pushing the cover wall 24 downward, the engagement state between the lower convex portion 28 and the lower concave portion 22 is not released, and the cap member 7 can be prevented from coming off the base member 6, and a more reliable non-slip material 1 for stairs can be obtained.

[0015] When at least the upper concave portion 27 and the lower convex portion 28 are formed of hard plastic, it is possible to prevent the engagement state between the upper convex portion 12 and the lower concave portion 22 of the base member 6 from being released due to the deformation of these upper concave portion 27 and lower convex portion 28. Therefore, it is possible to suppress the cap member 7 from coming off the base member 6 and obtain a more reliable non-slip material 1 for stairs.

[0016] Except for the central portion in the front-rear direction of the cover wall 24, a reinforcing portion 30 (30c, 30a) made of hard plastic is formed so as to sandwich the central portion, and a deformable portion 31 made of soft plastic is formed between these reinforcing portions 30 (30c, 30a). If so, it becomes possible to bend the cover wall 24 from the central portion of the cover wall 24 corresponding to the formation location of the deformable portion 31. According to this, the covering operation of the front vertical wall 25 of the cap member 7 with respect to the hanging portion 9 of the base member 6 can proceed more easily, and the cap member 7 can be more easily attached to the base member 6.

[0017] At the front end of the horizontal portion 8 constituting the base member 6, a protruding portion 13 is formed so as to protrude forward from the front surface of the hanging portion 9. A recessed portion 29 for receiving the protruding portion 13 is recessed and formed at the corner portion related to the boundary between the cover wall 24 and the front vertical wall 25 of the cap member 7. If the lower surface of the protruding portion 13 is a retaining surface 14 that prevents the cap member 7 from coming off, for example, even when an external force such as pushing up the front vertical wall 25 of the cap member 7 is applied, the lower portion of the recessed portion 29 of the cap member 7 engages with the lower surface of the protruding portion 13 which is the retaining surface 14, so that the upward movement of the front vertical wall 25 of the cap member 7 can be restricted, and it is possible to prevent the engagement state between the lower recessed portion 22 and the lower protruding portion 28 from being inadvertently released.

[0018] If the corner portion 16 above the front side of the protruding portion 13 is formed in an R shape, the protruding portion 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 surface of the protruding portion 13 is in a non-contact state with the front side of the inner surface of the recessed portion 29, a gap S can be formed between the two (the protruding portion 13 and the recessed portion 29). According to this, for example, even when an impact is applied from the front of the cap member 7, the deformation of the cap member 7 due to the impact can be absorbed by the gap S, so that a non-slip material 1 with more excellent impact absorption ability can be obtained.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

MODE FOR CARRYING OUT THE INVENTION

[0021] (Embodiment) FIGS. 1 to 6 show an embodiment of the non-slip material for stairs according to the present invention. In the present embodiment, front-rear, left-right, and up-down refer to the cross arrows shown in FIGS. 1 and 2 and the front-rear, left-right, and up-down indications written near each arrow. As shown in FIG. 2, the stairs 2 to which the non-slip material 1 of the present embodiment is applied are concrete molded products having a plurality of treads (upper surfaces of the stairs 2) 3 formed at a predetermined height and kicking upper surfaces 4 formed in the vertical direction from the inner ends of the respective treads 3. The non-slip material 1 is attached to the corner portion 5 located above the front side of the stairs 2.

[0022] As shown in FIGS. 1 and 4, the non-slip member 1 is composed of a base member 6 and a cap member 7 engaged and attached to the base member 6. The base member 6 is a horizontally long metal molded product (strip material) formed in an L shape in a longitudinal side view, having a flat horizontal portion 8 received by the tread surface 3 of the step 2 and a vertical portion 9 extending downward from the front end of the horizontal portion 8 and received by the kicking surface 4. Through holes 11 for screws 10 are provided at predetermined intervals in the left-right direction at the central portion of the horizontal portion 8 in the front-rear direction. At the rear end of the horizontal portion 8, an engaging protrusion (upward convex portion) 12 for engaging and attaching the cap member 7 to the base member 6 is formed. The engaging protrusion 12 is continuously formed at the rear end of the horizontal portion 8 and projects in a cantilever shape rearward. The engaging protrusion 12 is provided over the entire length of the horizontal portion 8 in the left-right direction.

[0023] As shown in FIGS. 3 to 5, at the front end of the horizontal portion 8, a protruding portion 13 projecting forward from the front surface of the vertical portion 9 is provided over the entire length of the horizontal portion 8 in the left-right direction. The lower surface of the protruding portion 13 located in front of the vertical portion 9 is a retaining surface 14 for preventing accidental detachment of the cap member 7. To improve the retaining effect, the corner portion 15 at the lower front side of the protruding portion 13 is formed at a right angle. On the other hand, the corner portion 16 at the upper front side of the protruding portion 13 is formed in an R shape.

[0024] The vertical portion 9 includes a curved upper half portion 18 extending downward from the horizontal portion 8 and bulging forward, and a lower half portion 19 continuously extending downward below the upper half portion 18 and having a straight surface in contact with the kicking surface 4 at the rear side. At the lower end of the lower half portion 19, a locking wall 20 protruding upward at the front side is formed, and a hook-shaped engaging recess (downward recess) 22 having an upward opening 21 is formed between the rear surface of the locking wall 20 and the front surface of the lower half portion 19 in a longitudinal side view. This engaging recess 22 is provided over the entire length of the vertical portion 9 in the left-right direction.

[0025] The cap member 7 is a horizontally long resin molded product formed in an L shape in a longitudinal side view, having 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 along the front surface of the vertical portion 9 of the base member 6. At the rear end of the cover wall 24, there is an opening 26 at the front, and a mounting groove (upper concave portion) 27 that is formed in a hook shape in a longitudinal side view and receives the engaging protrusion 12 is provided over the entire length in the left-right direction. At the lower end of the front vertical wall 25, a locking leg piece (lower convex portion) 28 that is inserted into the engaging concave portion 22 of the vertical portion 9 of the base member 6 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 the first joint portion E1. Also, the engaging concave portion 22 of the base member 6 and the locking leg piece 28 of the cap member 7 form the second joint portion E2.

[0026] At the inner corner portion related to the boundary between the cover wall 24 and the front vertical wall 25 of the cap member 7, a recessed portion 29 for receiving the protruding portion 13 of the base member 6 is formed to be recessed. The shape of the inner surface of the recessed portion 29 is partially arcuate in a longitudinal side view. Also, the recessed portion 29 is provided over the entire length in the left-right direction. As shown in FIG. 3, in a state where the cap member 7 is engaged and mounted on the base member 6, the lower surface (the retaining surface 14) and the front end surface of the protruding portion 13 are non-contact with the inner surface of the recessed portion 29, and a gap S is formed between the two (the protruding portion 13 and the recessed portion 29).

[0027] The cap member 7 is based on soft plastic, and a reinforcing portion 30 made of hard plastic having a higher hardness than the soft plastic is partially formed. As shown in FIG. 4, in this embodiment, at a total of three locations: a location including the mounting groove 27 at the rear end of the cover wall 24 (the first reinforcing portion 30a), a location including the locking leg piece 28 at the lower end of the front vertical wall 25 (the second reinforcing portion 30b), and near the front end of the cover wall 24 (the third reinforcing portion 30c), a et al. reinforcing portion 30 made of hard plastic is formed. The front end of the first reinforcing portion 30a does not reach the rear end of the third reinforcing portion 30c, and an easily deformable portion 31 made of soft plastic is formed in the central portion in the front-rear direction of the cover wall 24 between the first reinforcing portion 30a and the third reinforcing portion 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 and fixed to the corner portion 5 of the step 2 using the screw 10. At this time, the horizontal portion 8 is in contact with the tread surface 3, and the vertical portion 9 is in contact with the kicking upper surface 4. Next, as shown in FIG. 6(a), the mounting groove 27 of the cap member 7 is hooked on the engaging protrusion 12 of the base member 6 to make a temporarily fixed state. At this time, the locking leg piece 28 at the lower end of the front vertical wall 25 of the cap member 7 is located above the protruding portion 13 at the front end of the horizontal portion 8 of the base member 6. Next, from the above temporarily fixed state, as shown in FIG. 6(b), the cover wall 24 is slightly bent and deformed to displace the locking leg piece 28 at the lower end of the front vertical wall 25 of the cap member 7 forward from the protruding portion 13. At this time, the cover wall 24 is deformed from the easily deformable portion 31 made of a soft plastic sandwiched between the front and rear reinforcing portions 30 (the third reinforcing portion 30c and the first reinforcing portion 30a). Also, due to the corner portion 16 above the front side of the protruding portion 13 formed in an R shape, the locking leg piece 28 can easily overcome the protruding portion 13. Next, as shown in FIG. 6(c), with the engaging portion between the engaging protrusion 12 and the mounting groove 27 as the center, the front end of the cap member 7 is pushed downward, and as shown in FIG. 1, the locking leg piece 28 of the cap member 7 is inserted to the inner end (lower end) of the engaging recess 22 of the base member 6. As a result, the concave-convex engagement state between the engaging protrusion 12 and the mounting groove 27 is established, and the concave-convex engagement state between the locking leg piece 28 and the engaging recess 22 is established. By these two concave-convex engagements, the cap member 7 is firmly engaged and attached to the base member 6, and the non-slip material 1 is constructed. Also, as shown in FIG. 3, in the state where the cap member 7 is engaged and attached to the base member 6, the lower surface (the retaining surface 14) and the front end surface of the protruding portion 13 are not in contact with the inner surface of the recessed portion 29.

[0029] In the non-slip material 1 according to the present embodiment as described above, when a large external force acts on 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 so as to expand back and forth, and the front vertical wall 25 tends to move downward. However, the downward movement of the front vertical wall 25 is received by the engaging recess 22 formed at the lower end of the hanging portion 9 of the metal base member 6. Further, the more the front vertical wall 25 tends to move downward, the deeper the locking leg piece 28 formed at the lower end of the front vertical wall 25 enters the inside of the engaging recess 22. As a result, the locking leg piece 28 and the engaging recess 22 are more firmly engaged with each other in an uneven manner. From the above, according to the non-slip material 1 according to the present embodiment, even when an external force acts in a direction to push the cover wall 24 of the cap member 7 downward, the engagement state between the locking leg piece 28 and the engaging recess 22 is not released, and the cap member 7 does not come off from the base member 6, and a non-slip material 1 for stairs with higher reliability can be obtained.

[0030] Since the mounting groove 27 and the locking leg piece 28 are formed of a hard plastic, it is possible to prevent the engagement state between the engaging protrusion 12 and the engaging recess 22 of the base member 6 from being released due to deformation of the mounting groove 27 or the locking leg piece 28. Therefore, it is possible to suppress the cap member 7 from coming off from the base member 6, and a non-slip material 1 for stairs with higher reliability can be obtained.

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

[0032] At the front end of the horizontal portion 8 that constitutes the base member 6, a protruding portion 13 is formed to protrude forward from the front surface of the vertical portion 9, and an anti-disengagement surface 14 that prevents the cap member 7 from coming off is formed on the lower surface of the protruding portion 13. Further, a recessed portion 29 for receiving the protruding portion 13 is recessed and formed at a corner portion related to the boundary between the cover wall 24 and the front vertical wall 25 of the cap member 7. According to these, for example, even when an external force such as pushing up the front vertical wall 25 of the cap member 7 is applied, the lower portion of the recessed portion 29 of the cap member 7 engages with the lower surface of the protruding portion 13 which is the anti-disengagement surface 14, so that the upward movement of the front vertical wall 25 of the cap member 7 can be restricted, and it is possible to prevent the uneven engagement state between the engagement recess 22 and the locking leg piece 28 from being inadvertently released. In addition, since the mounting groove 27 of the cap member 7 and the locking leg piece 28 are formed of hard plastic and other portions are formed of soft plastic, the corner portion related to the boundary between the cover wall 24 and the front vertical wall 25 of the cap member 7 can be formed of soft plastic. According to this, it is possible to prevent the recessed portion 29 formed in the corner portion for receiving the protruding portion 13 from contacting and being damaged by the protruding portion 13. Further, due to the flexibility and shock absorbency derived from the soft plastic, it is possible to mitigate an external shock and prevent the recessed portion 29 from being damaged. Incidentally, when the recessed portion 29 is formed of hard plastic, the shock cannot be mitigated and there is a risk of damage.

[0033] If the corner portion on the upper front side of the protruding portion 13 is formed in an R shape, the protruding portion 13 can be more easily induced into the recessed portion 29. Therefore, the cap member 7 can be more easily attached to the base member 6.

[0034] In a state where the cap member 7 is engaged and attached to the base member 6, if the front end surface of the protruding portion 13 is in a non-contact state with the inner surface of the recessed portion 29, a gap S can be formed between the two (the protruding portion 13 and the recessed portion 29). According to this, for example, even when an impact is applied from the front of the cap member 7, the deformation of the cap member 7 due to the impact can be absorbed by the gap S, so that a non-slip material 1 with more excellent shock absorption ability can be obtained.

[0035] The staircase to which the non-slip material 1 of the present invention is attached is not limited to the concrete staircase 2.

Explanation of Signs

[0036] 1 Non-slip material 2 Staircase 3 Upper surface (tread surface) of the staircase 5 Corner part 6 Base member 7 Cap member 8 Horizontal part 9 Vertical part 12 Upper convex part (engagement protrusion) 13 Protrusion 14 Stopping surface 16 Corner part above the front side of the protrusion 21 Opening 22 Lower concave part (engagement concave part) 26 Opening 27 Upper concave part (mounting groove) 28 Lower convex part (locking leg piece) 29 Recessed part 30 Reinforcing part 31 Easily deformable part E1 First engagement part E2 Second engagement part S Gap

Claims

1. A non-slip material attached to a corner portion (5) located above the front side of the staircase (2), comprising: a horizontal portion (8) that is received on the upper surface (3) of the staircase (2), and a vertical portion (9) that extends downward from the front end of the horizontal portion (8), and a horizontally long, L-shaped cross-section metal base member (6) that is fixed to the corner portion (5) of the staircase (2); a cover wall (24) along the upper surface of the horizontal portion (8) and a front vertical wall (25) along the front surface of the vertical portion (9), and a horizontally long, L-shaped cross-section resin cap member (7) that is engaged and attached to the base member (6) through 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) and 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 vertical portion (9) of the base member (6) and the lower end of the front vertical wall (25) of the cap member (7); The first engagement portion (E1) is composed of an upward convex portion (12) formed to project in a cantilevered manner rearward from the rear end of the horizontal portion (8) of the base member (6), and a hook-shaped upward concave portion (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 second engagement portion (E2) is composed of a hook-shaped downward concave portion (22) formed at the lower end of the vertical portion (9) of the base member (6) and having an opening (21) at the upper side, and a downward convex portion (28) formed at the lower end of the front vertical wall (25) of the cap member (7) and inserted into the downward concave portion (22) from above through the opening (21). A non-slip material for a staircase, characterized in that.

2. The cap member (7) is formed with a reinforcing portion (30) made of a hard plastic that is harder than the soft plastic in part, based on the soft plastic. The non-slip material for a staircase according to claim 1, wherein at least the upward concave portion (27) and the downward convex portion (28) are formed of hard plastic.

3. Reinforcing portions (30(30c·30a)) made of hard plastic are formed so as to sandwich the central portion in the front-rear direction of the cover wall (24), excluding the central portion, and a deformable portion (31) made of soft plastic is formed between these reinforcing portions (30(30c·30a)). The non-slip material for a staircase according to claim 2.

4. A protruding portion (13) that projects forward from the front surface of the vertical portion (9) is provided at the front end of the horizontal portion (8) that constitutes the base member (6). A recessed portion (29) for receiving the protruding portion (13) is recessed and formed at a corner portion related to the boundary between the cover wall (24) and the front vertical wall (25) of the cap member (7). The non-slip material for stairs according to claim 1, wherein the lower surface of the protruding portion (13) is a retaining surface (14) that prevents the cap member (7) from coming off.

5. The non-slip material for stairs according to claim 4, wherein a corner portion (16) above the front side of the protruding portion (13) is formed in an R shape.

6. The non-slip material for stairs according to claim 4, wherein in a state where the cap member (7) is engaged and attached to the base member (6), the front end surface of the protruding portion (13) is in a non-contact state with the inner surface on the front side of the recessed portion (29).

Images