Stair nose protection

Abstract

The present invention provides a stair nose protection material that enables the thinning of decorative panels attached to the top surface of stair treads, thereby reducing the height difference with the decorative panels while improving strength. [Solution] A stair nose protection material 10 for protecting the stair nose of a tread 3, in which a decorative panel 9 is attached to the upper surface 4 so as to expose the upper surface 6 of the stair nose 5, comprising a stair nose body 11 having an upper cover portion 13 that covers the upper surface of the stair nose and a front cover portion 12 that covers the front surface 7 of the stair nose, and a cover member 20 that is attached along the decorative panel side portion 16 of the upper cover portion and covers the upper end surface 9a of the decorative panel, wherein the thickness of the front side portion 14 of the upper cover portion is approximately the same as the thickness of the front cover portion, and the upper surface of the decorative panel side portion connected to the front side portion is inclined downward toward the decorative panel side and includes an inclined surface 17 to which the cover member is attached.

Description

Technical Field

[0001] This disclosure relates to a nose protection material for steps.

Background Art

[0002] Conventionally, a nose material attached to the nose side (front end side of the tread board) of a decorative material that covers the upper surface of an existing tread board when reforming stairs or the like is known. For example, Patent Document 1 below discloses a nose cover fixed to the nose part of a tread board of a staircase with a decorative material covered and fixed on the upper surface. This nose cover has a horizontal part corresponding to the upper surface of the nose part of the tread board and a vertical part extending downward from the horizontal part and corresponding to the front end surface of the nose part, and the upper surface of the horizontal part is fixed in a manner flush or substantially flush with the upper surface of the decorative material.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Decorative materials covered and fixed to the tread board as described above are desired to be thinned from the viewpoints of handling properties and processability. However, in the nose cover described in Patent Document 1, if the decorative material is thinned, the nose cover itself also needs to be thinned in order to reduce the step, and improvement is desired from the viewpoint of strength.

[0005] This disclosure has been made in view of the above circumstances, and an object thereof is to provide a nose protection material that enables thinning of a decorative board attached to the upper surface of a tread board, relieves the step with the decorative board, and can improve the strength.

Means for Solving the Problems

[0006] To achieve the above objective, the stair nose protection material according to the present disclosure is a stair nose protection material that protects the stair nose portion of a tread board on which a decorative panel is attached to the upper surface so as to expose the upper surface of the stair nose portion, and comprises a stair nose body having an upper cover portion that covers the upper surface of the stair nose portion and a front cover portion that covers the front surface of the stair nose portion, and a cover member that is attached along the decorative panel side portion of the upper cover portion and covers the upper end surface of the decorative panel, wherein the thickness of the front side portion of the upper cover portion is approximately the same as the thickness of the front cover portion, and the upper surface of the decorative panel side portion connected to the front side portion is inclined to slope downward toward the decorative panel side and includes an inclined surface to which the cover member is attached. [Effects of the Invention]

[0007] The stair nose protection material relating to this disclosure, with the configuration described above, makes it possible to make the decorative panel attached to the upper surface of the tread thinner, and improves strength while mitigating the height difference with the decorative panel. [Brief explanation of the drawing]

[0008] [Figure 1] This is a schematic, partially broken side view showing an example of a staircase using an example of a stair nosing protection material according to one embodiment of the present disclosure. [Figure 2] (a) and (b) schematically show an example of the same stair nose protection material, where (a) is a schematic longitudinal section view with a partial fracture and (b) is a schematic side view. [Figure 3] (a) is a partially fractured schematic exploded longitudinal section view corresponding to Figure 2(a), and (b) is a partially fractured schematic enlarged longitudinal section view of the same stair nose protection material. [Modes for carrying out the invention]

[0009] Embodiments of this disclosure will be described below with reference to the drawings. In some of the figures, some of the detailed symbols used in other figures have been omitted. In the following embodiments, the vertical direction will be described based on the state in which an example of the stair nosing protection material according to this embodiment is attached to an existing stair tread. Furthermore, the front-to-back direction (stair tread depth direction) will be described based on the state in which the viewer is facing the tread from the lower floor side, with the near side being the front and the opposite side being the back.

[0010] Figures 1 to 3 schematically show an example of a stair nose protection material and an example of its installation according to this embodiment. As shown in Figure 1, the stair nose protection material 10 according to this embodiment protects the stair nose portion 5 of the tread 3, on which a decorative panel 9 is attached to the upper surface 4, exposing the upper surface 6 of the stair nose portion 5. This stair nosing protection material 10 is attached to the stair nosing portion 5 of the treads 3 that make up the stairs 1. This stair nosing protection material 10 may also be attached adjacent to the stair nosing side, which is the front side of the decorative panel 9 for renovation that is attached to cover the upper surface 4 of the existing treads 3 when renovating the existing stairs 1. The treads 3 may be individual treads 3A that make up each of the multiple steps of the stairs 1, or they may be the top step 3B that connects to the floor of the floor above and forms the top step. Such treads 3 may have both ends in the width direction of the stairs held by appropriate side boards (stringers) that make up the stairs 1. In the illustrated example, a stairs 1 is shown in which an existing riser 2 is provided so as to cover the space between the rear end of the lower tread 3 and the stair nosing portion 5 of the upper tread 3. An appropriate insertion groove is provided on the underside of the tread 3 into which the upper end of the riser 2 is inserted.

[0011] When remodeling an existing staircase 1 like this, in addition to the decorative panel 9 that covers the top surface of the existing treads 3, decorative side panels that cover the side panels and decorative riser panels 8 that cover the risers 2 may also be used. The illustrated example shows a case where a decorative riser panel 8 that covers the front surface of the existing riser 2 is installed so that its lower end abuts against the top surface 4 of the lower tread 3 and its upper end abuts against the bottom surface of the upper tread 3 (nosing 5). The decorative panel 9 is attached to the tread 3 so as to cover most of its upper surface 4. In the illustrated example, the decorative panel 9 is shown to cover the upper surface 4 of the tread 3 from the upper covering portion 13 of the stair nose protection material 10 (described later) to the riser decorative panel 8. The thickness of these riser decorative panels 8 and decorative panels 9 is preferably made thin from the viewpoint of handling and workability, for example, it may be about 1 mm to 5 mm, and preferably 3 mm or less. In the illustrated example, the thickness of the decorative panel 9B covering the upper surface 4 of the upper step (upper frame 3B) 3 is shown to be smaller than the thickness of the decorative panel 9A covering the upper surface 4 of the lower step (step board 3A) 3, but it is not limited to this example.

[0012] These kick plate decorative panels 8 and decorative panels 9 may be constructed by attaching an appropriate surface sheet to the surface side of an appropriate base material. The base material may be made of wood fiberboard such as MDF (medium-density fiberboard) or hardboard, or it may be made of wood powder-plastic composite material (WPC) containing wood powder, synthetic resin-based materials, inorganic fillers, compatibilizers, colorants, etc., in predetermined proportions. The surface sheet of the decorative panel 9 may be an anti-slip sheet with anti-slip properties. In addition, an appropriate moisture-proof sheet may be attached to the back side of the base material. These riser decorative panels 8 and 9 may be fixed to the riser board 2 and tread board 3 with adhesive materials such as double-sided tape or appropriate adhesives, or instead of, or in addition to, such adhesives, they may be fixed to the riser board 2 and tread board 3 with fasteners such as finish nails.

[0013] As shown in Figure 2(a), the stair nose protection material 10 comprises a stair nose body 11 having an upper cover portion 13 that covers the upper surface 6 of the stair nose portion 5 of the tread 3 and a front cover portion 12 that covers the front surface 7 of the stair nose portion 5. The stair nose protection material 10 also includes a cover member 20 that is attached along the decorative panel side portion 16 of the upper cover portion 13 and covers the upper end surface 9a of the decorative panel 9. With this configuration, the stair nose portion 5 of the tread 3 can be protected by the stair nose protection material 10, and the end of the decorative panel 9 attached to the upper surface 4 of the tread 3 can be made less conspicuous by the cover member 20. The upper cover portion 13 has a front side portion 14 with a thickness approximately the same as the thickness of the front cover portion 12, while the upper surface of the decorative panel side portion 16, which is connected to the front side portion 14, slopes downward toward the decorative panel 9 and includes an inclined surface 17 to which the cover member 20 is attached. With this configuration, the cover member 20 can be attached to the inclined surface 17 of the decorative panel side portion 16, which is lower than the upper surface 15 of the front side portion 14 of the upper cover portion 13 of the step nose protection material 10. This ensures the thickness of the front side portion 14 and the front cover portion 12 of the upper cover portion 13, and while providing a cover member 20 that covers the upper end surface 9a of the decorative panel 9, it is possible to alleviate the step difference with the decorative panel 9. Furthermore, while enabling a thinner decorative panel 9, it is possible to ensure the thickness of the corners between the upper cover portion 13 and the front cover portion 12, which require strength, and effectively improve strength. In addition, since the decorative panel 9 can be made thinner, the handling and processability of the decorative panel 9 can also be improved.

[0014] As shown in Figures 2(a) and (b), the stair nose body 11 is roughly L-shaped when viewed from the side (in the direction of the stair width) by the front covering portion 12 and the top covering portion 13. The stair nosing body 11 is elongated in the direction of the stair width so as to be able to cover substantially the entire length of the stair nosing portion 5 of the tread 3 in the direction of the stair width. The stair nosing body 11 may have a uniform cross-sectional shape along its entire length. The stair nosing body 11 may be formed from a metal-based material or a synthetic resin-based material, or from a wood-plastic composite (WPC), or it may be an extruded product. A suitable decorative sheet may be attached to the surface of the stair nosing body 11. In this case, the upper surface of the decorative panel 9 side of the upper surface covering portion 13 is covered by a cover member 20, which will be described later, so a decorative sheet may not be attached to that part.

[0015] The front covering portion 12 is a substantially flat plate shape, with its thickness direction being in the front-to-back direction (the direction of the tread depth). Both sides of this front covering portion 12 in the thickness direction are substantially flat surfaces parallel to the front surface 7 of the stair nose portion 5. The thickness dimension of this front covering portion 12 may be an appropriate dimension from the viewpoint of strength and from the viewpoint of reducing the step between the front side portion 14 of the upper covering portion 13, which has substantially the same thickness, and the decorative panel 9. For example, it may be about 3 mm to 8 mm, or about 4 mm to 6 mm. The thickness dimension of this front covering portion 12 may also be a dimension such that the dimension obtained by subtracting the thickness dimension of the decorative panel 9 from it is 3 mm or less. That is, the thickness dimension of this front covering portion 12 may be a dimension such that the step between the front side portion 14 of the upper covering portion 13 and the decorative panel 9 is 3 mm or less. The width dimension along the vertical direction (step thickness direction) of this front covering portion 12 (the dimension from the lower surface of the upper covering portion 13 to the lower end of the front covering portion 12) may be equal to or greater than the thickness dimension of the step 3. In the illustrated example, an example in which the width dimension of the front covering portion 12 is larger than the thickness dimension of the step 3 is shown. The width dimension of this front covering portion 12 may be, for example, about 40 mm to 50 mm so as to be equal to or greater than the thickness dimension of the step 3, which is generally about 35 mm to 40 mm.

[0016] The upper covering portion 13 is arranged in a substantially flat plate shape such that the thickness direction is the vertical direction. This upper covering portion 13 is formed so as to extend rearward (inward) in the depth direction of the step from the upper end of the front covering portion 12. The corner portion (outer corner portion) on the surface side between this upper covering portion 13 and the front covering portion 12 is formed in a protruding curved surface shape (R chamfered shape). This upper covering portion 13 includes a front side portion 14 on the front side in the depth direction of the step and a decorative panel side portion 16 that is continuous with this and on the rear side in the depth direction of the step. The lower surface, which is one side surface in the thickness direction of this upper covering portion 13, is formed in a substantially flat surface shape parallel to the upper surface 6 of the step nose portion 5. The upper surface 15 of the front side portion 14 that constitutes the front side portion of the other side surface in the thickness direction of the upper covering portion 13 is formed in a substantially flat surface shape parallel to the upper surface 6 of the step nose portion 5. The upper surface of the decorative panel side portion 16 that constitutes the decorative panel side portion of the other side surface in the thickness direction of the upper covering portion 13 includes an inclined surface 17 that inclines downward as it separates from the upper surface 15 of the front side portion 14. That is, the upper surface of the upper covering portion 13 is formed in a substantially flat surface shape parallel to the upper surface 6 of the step nose portion 5 on the front side and inclines downward from the middle portion in the front-rear direction.

[0017] The thickness of the front-side part 14 may be exactly the same as the thickness of the front covering part 12, may be about 0.9 to 1.1 times the thickness of the front covering part 12, or may be about 0.95 to 1.05 times the thickness of the front covering part 12. The width dimension along the depth direction of the tread of the front-side part 14 (the dimension along the depth direction of the tread from the back surface of the front covering part 12 to the boundary part between the upper surface 15 and the inclined surface 17) may be an appropriate dimension from the viewpoint of ensuring the strength of the corner part of the step nose body 11, the viewpoint of miniaturizing the step nose body 11, etc. This width dimension of the front-side part 14 may be, for example, about 10 mm to 20 mm. The width dimension along the depth direction of the tread of the decorative board side part 16 (the dimension along the depth direction of the tread from the boundary part between the upper surface 15 and the inclined surface 17 to the end face facing the decorative board 9 side) may be an appropriate dimension so that the inclination angle of the inclined surface 17 is relatively gentle from the viewpoint of reducing the discomfort when stepping on it, etc. Also, the width dimension of the decorative board side part 16 may be an appropriate dimension from the viewpoint of securing the attachment location of the cover member 20 described later, the viewpoint of miniaturizing the step nose body 11, etc. In the illustrated example, an example where it is larger than the width dimension of the front-side part 14 is shown. This width dimension of the decorative board side part 16 may be a dimension such that the inclination angle of the inclined surface 17 with respect to the horizontal plane is about 5 degrees to 10 degrees, or may be, for example, about 15 mm to 30 mm. Also, the thickness of the lower end edge part of the inclined surface 17 where the thickness is the smallest in the decorative board side part 16 may be 1.5 mm or more, or 2 mm or more from the viewpoint of strength, etc.

[0018] A groove part 29 that opens upward is formed by the front-side part (front-side inclined surface) 17a on the inclined surface 17 of the decorative board side part 16 and the front-side end part (front end part) 20a of the cover member 20. That is, the inclined surface 17 includes the front-side inclined surface 17a that is exposed without being covered by the cover member 20 when the cover member 20 is attached to the inclined surface 17. With such a configuration, when stepping on it at night or the like, the step nose part of the reformed tread can be recognized by the groove part 29, and this groove part 29 can also function as an anti-slip groove. Also, while ensuring the thickness of the front end side of the cover member 20, the step between the front-side part 14 of the upper surface covering part 13 and the cover member 20 can be alleviated.

[0019] As shown in Figures 3(a) and (b), the decorative panel side portion 16 is provided with a marker groove 18 that opens upward on the inclined surface 17, serving as a guide for the fastening point of the fastener 28 that secures the stair nose body 11 to the tread 3. With this configuration, the marker groove 18 can be used as a guide, improving the ease of fastening the fastener 28. This marker groove 18 is provided in the portion of the decorative panel side portion 16 that will be covered by the cover member 20 described later. With this configuration, once the cover member 20 is attached to the decorative panel side portion 16, the head of the fastener 28, including the marker groove 18, will be covered by the cover member 20, making them less conspicuous. This marker groove 18 is provided to extend along the entire length of the stair nose body 11. In the illustrated example, the marker groove 18 is roughly V-shaped when viewed in the longitudinal direction of the groove, but it may also be roughly U-shaped or the like. The fastener 28 that is attached to this marker groove 18 may be, for example, a finish nail. The stair nose body 11 may be fixed to the upper surface 6 and front surface 7 of the stair nose section 5 by adhesive material such as double-sided tape or an appropriate adhesive, instead of or in addition to the fastener 28.

[0020] At the end of the decorative panel side portion 16, which is the end of the upper cover portion 13 on the decorative panel 9 side, there is a regulating projection 19 that protrudes upward and engages with the engaged portion 24 of the cover member 20 to regulate the mounting position of the cover member 20. With this configuration, the cover member 20 is less likely to shift position relative to the inclined surface 17 of the upper cover portion 13, and the cover member 20 can be easily attached to the appropriate position. The restrictive projection 19 protrudes upward from the lower edge of the inclined surface 17 of the decorative panel side portion 16. In the illustrated example, a substantially flat surface portion is provided on the upper surface of the decorative panel side portion 16, parallel to the upper surface 6 of the step nose portion 5, so as to be connected to the lower edge of the inclined surface 17, and the restrictive projection 19 is provided so as to protrude upward from this flat portion. The width dimension of this flat portion is smaller than the width dimension of the inclined surface 17, for example, about 1 / 10 to 1 / 20 of the width dimension of the inclined surface 17, and this flat portion may also be considered as part of the inclined surface 17. The protruding tip (upper end) of this restrictive projection 19 has both edges in the depth direction of the tread plate formed in a curved surface shape (R-chamfered shape).

[0021] The restricting projection 19 is formed such that its leading edge in the protruding direction is below the upper surface 15 of the front side portion 14. Furthermore, the restricting projection 19 is formed such that its leading edge in the protruding direction is above the upper surface (end upper surface 9a) of the decorative panel 9. In other words, the dimension along the vertical direction from the lower surface of the upper cover portion 13 to the leading edge of the restricting projection 19 is greater than the thickness of the decorative panel 9. The protruding dimension of this restrictive projection 19 (the dimension along the vertical direction from the flat portion) may be set to an appropriate dimension from the viewpoint of enabling the positioning of the cover member 20 and reducing damage to the soft piece 25 of the cover member 20, as described later. For example, it may be about 0.5 mm to 1.5 mm. The width dimension of this restrictive projection 19 along the depth direction of the tread may be set to an appropriate dimension from the viewpoint of miniaturizing the stair nose body 11 and, as mentioned above, reducing damage to the soft piece 25. For example, it may be about 1 mm to 3 mm.

[0022] As shown in Figure 3(b), the cover member 20 comprises a cover body 21 attached to the inclined surface 17, and a soft piece 25 whose base end 26 on the cover body 21 side covers the restricting projection 19, and whose tip 27 abuts against the upper end surface 9a of the decorative panel 9. With this configuration, the restricting projection 19 allows the cover body 21 of the cover member 20 to be positioned, and since the restricting projection 19 is located on the base end side of the soft piece 25, excessive deformation of the base end side of the soft piece 25 can be reduced. This helps to suppress damage to the soft piece 25. The cover body 21 has an upper surface 22 parallel to the upper surface 15 of the front side portion 14 of the upper cover portion 13, and a lower surface 23 parallel to the inclined surface 17. With this configuration, the cover member 20 can be provided along the inclined surface 17 of the upper cover portion 13, while mitigating the step difference between the upper surface 22 of the cover body 21 of the cover member 20 and the upper surface 15 of the front side portion 14 of the upper cover portion 13.

[0023] In other words, the cover body 21 is formed such that its thickness decreases as it moves towards the front in the depth direction of the tread. The cover body 21 is formed such that its upper surface 22 is at the same height as or below the upper surface 15 of the front side portion 14 of the upper cover portion 13. The upper surface 22 of the cover body 21 may be treated to provide anti-slip properties such as appropriate anti-slip grooves. The front end of the cover body 21 in the tread depth direction constitutes the front end 20a of the cover member 20, and the rear end of the cover body 21 in the tread depth direction constitutes the engaged portion 24 of the cover member 20. The front end portion 20a is formed in the shape of a protruding curved surface. The engaged portion 24 is a substantially vertical surface that is substantially parallel to one side of the restricting projection 19 facing forward in the depth direction of the tread, and is in contact with this one side of the restricting projection 19.

[0024] The width dimension of the cover body 21 along the depth direction of the tread (the dimension along the depth direction of the tread from the front end portion 20a to the engaged portion 24) is set to be smaller than the dimension along the same direction from the upper edge of the inclined surface 17 of the decorative panel side portion 16 to the restrictive projection 19. In the illustrated example, the width dimension of the cover body 21 is set to approximately half the dimension along the same direction from the upper edge of the inclined surface 17 of the decorative panel side portion 16 to the restrictive projection 19. The cover body 21 may be formed from a synthetic resin material that is harder than the soft piece 25. In other words, the cover member 20 may include a cover body 21 formed from a hard resin and a soft piece 25 formed from a softer resin. The cover body 21 and the soft piece 25 may be resin molded products such as extruded or injection molded products that are integrally formed by molding of different materials (simultaneous composite molding of different materials), etc. In the illustrated example, the rear end of the cover body 21, which is at the rear end in the depth direction of the tread, is provided with a notched recessed step that opens upward and backward, and the connecting portion of the soft piece 25 to the cover body 21 is formed so as to fill this recessed step.

[0025] The soft piece 25 is formed to extend from the upper side of the engaged portion 24 of the cover body 21 toward the rear in the depth direction of the tread. A regulating projection 19 is provided so as to abut against or be close to the lower side of the base end portion 26 of the soft piece 25. The inner corner between the base end portion 26 of the soft piece 25 and the connecting portion that fills the recessed step portion described above is formed in the shape of a concave curved surface. With this configuration, damage to the base end side of the soft piece 25 can be reduced. This soft piece 25 is formed in a slanted shape so that, in its natural state (when not elastically deformed), it becomes downward towards the tip, so that its tip 27 comes into contact with the upper end surface 9a of the decorative panel 9 as it undergoes elastic deformation.

[0026] The extension dimension of the soft piece 25 from the restrictive protrusion 19 may be set to an appropriate dimension from the viewpoint of making the edge of the decorative panel 9 less noticeable or from the viewpoint of miniaturizing the cover member 20. For example, it may be about 2 mm to 10 mm, or even 5 mm or less. The thickness of this soft piece 25 may be set to an appropriate dimension from the standpoint of strength or thinning, for example, it may be around 0.5 mm to 1.5 mm, or even less than 1 mm. This cover member 20 may be attached to the inclined surface 17 of the upper cover portion 13 using adhesive material such as double-sided tape or an appropriate adhesive.

[0027] <Other Embodiments> In the example described above, the cover member 20 comprises a hard cover body 21 and a soft piece 25. However, instead of such a configuration formed from dissimilar materials, the entire cover member 20 may be formed from the same material. In the example described above, the upper surface 22 of the cover body 21 is shown to be parallel to the upper surface 15 of the front side portion 14 of the upper covering portion 13. However, it may also be an inclined surface that slopes downward or upward as it approaches the front side in the depth direction of the tread. In the example described above, the cover member 20 is shown to be attached to the inclined surface 17 such that a front-side inclined surface 17a is formed that is exposed and not covered by the cover member 20. However, it may also be attached so as to cover the entire inclined surface 17.

[0028] In the example described above, the stair nose body 11 is roughly L-shaped when viewed from the side by the front covering portion 12 and the top covering portion 13, but it may also further include a piece extending from the lower end of the front covering portion 12 toward the rear in the direction of the tread depth. In the example described above, a restrictive projection 19 is provided at the end of the upper covering portion 13 of the stair nose body 11, but such a restrictive projection 19 is not required. The configuration of each part of the stair nose protection material 10 according to this embodiment is merely an example, and various other modifications are possible.

[0029] <Note> The following technologies are disclosed based on the above description of embodiments. <Technology 1> A stair nose protection material for protecting the stair nose of a tread, wherein a decorative panel is attached to the upper surface of the stair nose so as to expose the upper surface of the stair nose, comprising: a stair nose body having an upper cover portion that covers the upper surface of the stair nose and a front cover portion that covers the front surface of the stair nose; and a cover member attached along the decorative panel side portion of the upper cover portion and covering the upper end surface of the decorative panel, wherein the thickness of the front side portion of the upper cover portion is approximately the same as the thickness of the front cover portion, and the upper surface of the decorative panel side portion connected to the front side portion is inclined downward toward the decorative panel side, and the stair nose protection material includes an inclined surface to which the cover member is attached. <Technology 2> The stair nose protection material according to Technology 1, wherein the end of the upper covering portion on the decorative panel side is provided with a regulating projection that protrudes upward and engages with the engaged portion of the cover member to regulate the mounting position of the cover member. <Technology 3> The stair nose protection material according to Technology 2, comprising a cover body attached to the inclined surface, and a soft piece whose base end on the cover body side covers the restricting projection and whose tip end abuts against the upper end surface of the decorative panel. <Technology 4> A stair nose protection material according to any one of the three techniques described in Technique 1 to Technique 3, wherein a groove opening upward is formed by the front side portion of the inclined surface of the upper covering portion and the front side end of the cover member. <Technology 5> The stair nose protection material according to any one of the techniques 1 to 4, wherein the cover body attached to the inclined surface of the upper covering portion of the cover member has an upper surface parallel to the upper surface of the front side portion of the upper covering portion and a lower surface parallel to the inclined surface. [Explanation of symbols]

[0030] 10-step nose protection material 11-step nose bridge 12 Front cover section 13 Top cover 14 Front part 15 Top side 16. Side of decorative panel 17 Inclined surface (top surface) 17a Front-side inclined surface (the front-side portion of the inclined surface) 19 Restrictive protrusion 20 Cover component 20a Front end (front end) 21 Cover body 22 Top side 23 Bottom surface 24 Engaged portion 25 Soft piece 26 Proximal end 27 Tip 3 Treadboard 4 Top side 5-step nose section 6 Top side 7 Front 9 Decorative panels 9a End top surface 29 Groove

Claims

1. A stair nosing protection material for protecting the stair nosing of a tread, wherein a decorative panel is attached to the upper surface of the stair nosing so as to expose the upper surface of the stair nosing, The stair nose body has an upper cover portion that covers the upper surface of the stair nose portion and a front cover portion that covers the front surface of the stair nose portion, and a cover member that is attached along the decorative panel side portion of the upper cover portion and covers the upper end surface of the decorative panel, The aforementioned upper covering portion is characterized in that the thickness of the front side portion is approximately the same as the thickness of the front covering portion, while the upper surface of the decorative panel side portion connected to the front side portion is inclined downward toward the decorative panel side, and includes an inclined surface to which the cover member is attached.

2. In claim 1, A stair nose protection material characterized in that the end of the upper covering portion on the decorative panel side is provided with a regulating projection that protrudes upward and engages with the engaged portion of the cover member to regulate the mounting position of the cover member.

3. In claim 2, The stair nose protection material is characterized by comprising a cover body attached to the inclined surface, and a soft piece whose base end on the cover body side covers the restricting projection and whose tip end abuts against the upper end surface of the decorative panel.

4. In any one of claims 1 to 3, A stair nose protection material characterized in that a groove opening upward is formed by the front side portion of the inclined surface of the upper covering portion and the front side end of the cover member.

5. In any one of claims 1 to 3, A stair nose protection material characterized in that the cover body attached to the inclined surface of the upper covering portion of the cover member has an upper surface parallel to the upper surface of the front side portion of the upper covering portion, and a lower surface parallel to the inclined surface.

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