JP6587229B2 - Staircase - Google Patents

Description

  The present invention relates to a staircase installed in a building such as a residence.

  2. Description of the Related Art Conventionally, one having a nose member attached to the tip portion (frontmost surface) of a stair tread to prevent slipping is known. For example, Patent Document 1 below discloses a nose member having a U-shaped cross section that covers the upper surface, side surfaces, and lower surface of a tread. Patent Document 1 below discloses that a step portion into which the end portion of the decorative tread is fitted is formed at the upper end portion of the nosing member.

JP 2001-49819 A

  However, there is no specific disclosure as to how the nosing member described in Patent Document 1 is fixed to the tread. In recent years, in consideration of future reforms, a structure capable of firmly fixing a nose member while reducing the amount of adhesive used as much as possible is required. Further, even when a fixing tool such as a nail is used for fixing a nose member, a decorative tread board, etc., it is required to reduce the number of fixing tools used as much as possible and to facilitate construction.

  The present invention has been proposed in view of the above, and an object thereof is to provide a stair that can firmly fix a stair nosing member and is easy to construct.

  In order to achieve the above object, a staircase according to the present invention includes a pair of side plates in which a horizontal plane and a vertical plane are alternately formed, a base tread supported by the horizontal plane, and a kick plate disposed on the vertical plane. A staircase having a decorative tread plate fixed to the upper surface of the base tread plate, and a nose member having a substantially U-shaped cross section disposed so as to cover the upper surface, the front end surface, and the lower surface of the base tread plate, The nose member is formed so that the end surface arranged on the upper surface of the base tread of the nosing member is in contact with the front end surface of the decorative tread, and the upper surface of the contact portion between the nosing member and the decorative tread is notched respectively. The notched portions are abutted to each other so that a concave groove is provided across both sides, and the presser member fitted and disposed in the concave groove is fixed by a fixture that penetrates the presser member and reaches the base tread. It is characterized by.

  Since the staircase according to the present invention has the above-described configuration, the nose member can be firmly fixed and construction is easy.

It is the side view typically shown in order to demonstrate the staircase which concerns on embodiment of this invention. (A) And (b) is a side view which shows the construction process of the same staircase. (A) And (b) is a side view which shows the construction process of the same staircase. (A) And (b) is a side view which shows the construction process of the same staircase.

Embodiments of the present invention will be described below with reference to the drawings.
In the following embodiment, the front side is the front, the opposite side is the rear (back), with the state facing the constructed stairs from the lower floor side, and the vertical direction The horizontal direction, vertical and horizontal directions, etc. will be described. 1-4 is explanatory drawing for demonstrating the staircase which concerns on this embodiment, and a part of detailed code | symbol attached | subjected to another figure is abbreviate | omitted in one part figure. Further, the enlarged view shown in FIG. 1 is a partially exploded side view for explanation.

  The staircase 1 according to the present embodiment is disposed on a pair of left and right side plates 2 and 2 in which a horizontal plane 2a and a vertical plane 2b are alternately formed, a base tread 4 supported on the horizontal plane 2a, and a vertical plane 2b. A kick board 6 and a decorative board 7 fixed to the upper surface 4a of the base board 4 are provided. Further, the base tread 4 is provided with a nose member 8 having a substantially U-shaped cross section disposed so as to cover the upper surface 4a, the front end surface 4b and the notch lower surface 40a (lower surface) of the base tread plate 4. The nosing member 8 is formed such that a butt end surface 8 d (end surface) disposed on the upper surface 4 a of the base tread plate 4 of the nosing member 8 contacts the front end surface 7 b of the decorative tread plate 7. On the upper surface of the contact portion between the nosing member 8 and the decorative tread board 7, a concave groove 10 is provided so as to straddle the cutout portions 70 and 80 formed in the cutout portions. The presser member 9 fitted and disposed in the concave groove 10 is fixed by a fixture 12 that penetrates the presser member 9 and reaches the base tread plate 4. This will be described in detail below.

  The staircase 1 may be constructed as a staircase between a lower floor and an upper floor in a building such as a residence, or may be constructed as a stairway to a loft such as an attic room. The pair of side plates 2 and 2 constituting the staircase 1 is formed in a flat plate shape that is arranged according to the gradient of the staircase 1 and is arranged substantially parallel to the left and right along the wall surface (not shown). The material of the side plate 2 is not particularly limited, but may be formed from solid wood, wood laminates such as plywood, laminated wood, wood fiber boards such as wood fiberboard, synthetic resin materials, It may be formed from wood powder (woody material), plastic composite material, or the like. In addition, a surface decorative sheet such as a veneer or a resin film may be attached to the surface of the base material made of these materials, or a surface decorative treatment may be applied thereto. As shown in FIG. 2 (a), horizontal plates 2a and vertical surfaces 2b are alternately formed in a side plate 2 on the side plate 2, and a plurality of concave grooves 2c cut into a rectangular shape are formed on the horizontal surface 2a. ing. The recessed groove 2c is formed so that one end 3b of the erection member 3 is fitted. Specifically, in the concave groove 2c, the left and right end portions 3b, 3b of the erection member 3 are fitted into the concave grooves 2c, 2c formed in the pair of side plates 2, 2, respectively, and the erection member 3 is fixed. And can be supported. The concave groove 2 c is formed by cutting out into a rectangular shape that is long in the vertical direction, and the depth dimension thereof is substantially the same as the height dimension (vertical dimension) of the erection member 3. The depth dimension of the concave groove 2 c is substantially the same as the thickness dimension of the erection member 3. Thus, when the installation member 3 is fitted and assembled from the upper opening of the groove 2c toward the depth direction of the groove 2c, the installation member 3 is accommodated in the groove 2c, and the horizontal surface 2a of the side plate 2 and the installation member 3 is substantially flush with the upper surface 3a. In addition, the shape of the ditch | groove 2c is set according to the shape and dimension of the erection member 3, and is not limited to the illustrated example, and may be formed by cutting out in a long rectangular shape or a substantially square shape in the front-rear direction. In the illustrated example, two concave grooves 2c are formed in each horizontal plane 2a. However, the present invention is not limited to this, and the number of grooves may be increased or decreased depending on the depth dimension of the horizontal plane 2a. In addition, the wall surface to which the side plate 2 is fixed may constitute a column structure such as a stud or a structural frame of a building such as a stud, a steel material, or reinforced concrete.

  The erection member 3 is a rectangular bar having a dimension in which both end portions 3b and 3b are fitted and fixed to the concave grooves 2c and 2c of the pair of side plates 2 and 2, respectively. The material of the erection member 3 is not particularly limited, but may be formed from a wood material, a synthetic resin material, a wood powder (wood) / plastic composite material, or the like. Although the thickness dimension of the construction member 3 is not particularly limited, it may be about 50 mm to 150 mm. Since the both ends 3b and 3b are fitted and fixed to the concave grooves 2c and 2c of the pair of side plates 2 and 2, the erection member 3 can be firmly fixed without using a fixing tool such as a screw. Further, as described above, since the horizontal surfaces 2a, 2a of the side plates 2, 2 and the upper surface 3a of the erection member 3 can form a substantially flush surface, the horizontal surfaces 2a, 2a of the side plates 2, 2 and the erection member 3 The base tread 4 can be disposed so as to overlap the upper surface 3a (see FIG. 2B).

  As shown in FIG. 2 (b), the base tread 4 is a rectangular flat plate having a width dimension in which both end portions are fixed to the horizontal surfaces 2 a and 2 a of the pair of side plates 2 and 2. The material of the base tread 4 is not particularly limited, but may be formed from a wood material, a synthetic resin material, a wood powder (wood) / plastic composite material, or the like. The thickness dimension of the base tread 4 is not particularly limited, but may be about 10 mm to 25 mm. The base tread 4 has a notch 40 formed by cutting from the front end face 4b to the bottom face 4c of the base tread 4, where 4a is the top face, 4b is the front end face, 4c is the bottom face, 4d is the back end face, 40a. Is a notch lower surface, and 40b is a notch front end surface. The notch front end surface 40b of the notch 40 is formed so as to be substantially flush with the vertical surface 2b of the lower side plate 2 in a state where the base tread 4 is installed on the horizontal surface 2a. The base plate 4 is placed on the horizontal surfaces 2a and 2a so that the rear end surface 4d abuts against the vertical surfaces 2b and 2b of the side plates 2 and 2, and is fixed in that state. The method for fixing the base tread 4 to the side plate 2 is not particularly limited. For example, the base tread plate 4 may be fixed from below by a tread plate fixing tool (not shown) having a substantially L-shaped cross section fixed in contact with the inner side surface of the side plate 2 and the lower surface 4c of the base tread plate 4. A fixing tool (not shown) such as a wood screw may be driven and fixed to both ends of the upper surface 4a of the base tread plate 4.

  As shown in FIG. 3A, the decorative tread 7 is overlapped and fixed on the upper surface 4 a of the base tread 4. The decorative tread board 7 is a rectangular flat plate having a width dimension substantially equal to the width dimension of the base tread board 4 and a depth dimension slightly smaller than the depth dimension of the base tread board 4, and is notched from the upper surface 7a to the front end surface 7b. A step board notch 70 is formed. The material of the decorative tread 7 is not particularly limited, and may be formed from a solid wood, a wood laminate such as a plywood, a laminated wood, a wood fiber board such as a wood fiber board, a synthetic resin material, Further, it may be formed of wood powder (woody material) / plastic composite material or the like. Further, a surface decorative treatment such as a veneer or a resin film may be attached to the surface of the base material made of these materials, or a surface decorative treatment may be applied. The thickness dimension of the decorative tread 7 is not particularly limited, but may be thinner than the base tread 4, for example, about 8 mm to 20 mm. In the figure, 7a is the upper surface, 7aa is the upper surface of the rear end (see FIG. 3B), 7b is the front end surface, 7c is the lower surface, 7d is the rear end surface, 70 is the tread notch, 70a is the notch front end surface, and 70b is the notch. The upper surface is shown. The decorative tread 7 is superimposed on the upper surface 4 a of the base tread 4, and the lower surface 7 c and the upper surface 4 a of the base tread 4 are disposed in contact with each other. Further, the rear end surface 7d of the decorative tread 7 is disposed so as to contact the vertical surface 2b, and is fixed to the upper surface 4a of the base tread 4 with a double-sided tape, an adhesive or the like in this state. The front end upper surface of the decorative tread plate 7, that is, the tread plate notch 70, is fixed with a presser member 9 described later, and the rear end upper surface 7aa of the decorative tread plate 7 is disposed so that the lower end surface 6c of the kick plate 6 contacts. . Therefore, since the front and rear end portions of the upper surface 7a of the decorative tread 7 are pressed, warping of the decorative tread 7 can be suppressed. Moreover, since the decorative tread 7 is pressed from above by the kick-in plate 6, it is possible to prevent the decorative tread 7 from dropping off. Furthermore, the bonding area of the decorative tread board 7 with the base tread board 4 does not need to be the entire lower surface 7c or the peripheral edge of the decorative tread board 7. For example, several places in the central region in the longitudinal direction of the decorative tread 7 may be used as an adhesive region, and the amount of adhesive or the like for fixing the decorative tread 7 to the base tread 4 can be suppressed.

  The kick plate 6 is disposed at the kick portion of the staircase 1 and has a width dimension in which both end portions are fixed to the vertical surfaces 2b and 2b of the pair of side plates 2 and 2. As shown in FIG. 3B, a rectangular flat plate having a height dimension that can be placed between the notch 40 of the upper base plate 4 and the upper surface 4 a of the lower base plate 4 is formed. The material of the kick board 6 is not particularly limited, but can be the same as that of the decorative board 7. Although the thickness dimension of the kick board 6 is not specifically limited, For example, it is good also as a thin plate shape of about 4 mm-10 mm. In the figure, 6a indicates an upper end surface, 6b indicates a front surface, 6c indicates a lower end surface, 6d indicates a rear surface, 6da indicates an upper rear surface, and 6ba indicates a front upper end portion. The kick plate 6 has both left and right end portions of the rear surface 6d in contact with the vertical surfaces 2b and 2b of the pair of side plates 2 and 2, and its lower end surface 6c is placed on the rear end upper surface 7aa of the decorative tread plate 7. The kick plate 6 is fixed in a state in which the upper end surface 6a of the kick plate 6 is aligned with the cutout portion 40 of the upper base plate 4. Specifically, the upper rear surface 6da of the notch plate 6 is arranged so as to abut on the notch front end surface 40b of the notch 40, and the upper end surface 6a of the notch plate 6 is close to or abuts on the notch lower surface 40a of the notch 40. Arranged. Therefore, when the kick plate 6 is disposed, it is possible to prevent the upper end surface 6a of the kick plate 6 from striking against the upper base plate 4 and to bend, so that the kick plate 6 can be disposed well (see FIG. 1). . The fixing method of the kick board 6 is not specifically limited, For example, it can fix using an adhesive agent etc.

  In the present embodiment, the example in which the kick board 6 is disposed after the decorative tread board 7 is disposed has been described. However, the present invention is not limited thereto, and after the kick board 6 is disposed on the base tread board 4, A decorative tread board 7 may be provided. In this case, the front lower end portion of the kick plate 6 is disposed in contact with the rear end surface 7 d of the decorative tread plate 7. Therefore, the kick plate 6 is arranged with the front upper end 6ba being the nose member 8 and the front lower end being sandwiched by the decorative tread 7 and the right and left ends of the kick plate 6 being in contact with the vertical surface 2b. Therefore, the amount of adhesive used can be suppressed and fixed.

  As shown in FIGS. 1 and 3B and the like, the nosing member 8 is disposed across the upper surface 4a, the front end surface 4b, and the notch lower surface 40a of the base tread plate 4, and has a cross section having substantially the same width as the base tread plate 4. The member is formed in a substantially U shape. The material of the nosing member 8 is not particularly limited, and may be the same as the kick board 6 and the decorative tread board 7. In the figure, 8a is an upper cover portion, 8b is a front cover portion, 8c is a lower cover portion, 8d is a butting end surface (one end surface of the nosing member 8), 8e is a lower end surface (the other end surface of the nosing member 8), 80 Denotes a nose cutout portion, 80a denotes a notch rear end surface, and 80b denotes a notch upper surface. The upper cover portion 8a of the nosing member 8 is formed so as to be substantially flush with the upper surface 7a of the decorative tread plate 7, and the front cover portion 8b is formed so as to cover the front end surface 4b of the base tread plate 4, and the lower cover portion 8c. Is formed so as to cover the notch lower surface 40 a of the base tread 4. The upper cover portion 8a of the nose member 8 is formed with a nose cutout portion 80 that is formed in a cut end surface 8d with the decorative tread plate 7. The butted end surface 8d of the nosing member 8 is in contact with the front end surface 7b of the decorative tread plate 7, and the lower end surface 8e is in contact with the front upper end portion 6ba of the kick plate 6. The nose notch 80 of the nosing member 8 is formed larger than the step board notch 70 of the decorative tread board 7, and the groove 10 straddling both is provided by abutting the nose notch 80 and the tread notch 70. Therefore, when the nose notch 80 and the tread notch 70 are brought into contact with each other, the notch upper surfaces 80b and 70b are substantially flush as shown in the enlarged view of FIG.

  The concave groove 10 formed by abutting the nose notch portion 80 and the tread plate notch portion 70 is provided with a pressing member 9 that fits into the concave groove 10. As shown in FIG. 1, FIG. 4 (a), etc., the presser member 9 is formed in a substantially U-shaped cross section that opens upward, and the upper end portions 9a, 9a are the upper cover portion 8a of the nose member 8 and the makeup member. It is formed so as to slightly protrude from the upper surface 7 a of the tread plate 7, and a concave groove 9 b is formed in the longitudinal direction of the pressing member 9. The material of the pressing member 9 is not particularly limited. For example, the pressing member 9 may be made of a soft synthetic resin material or an elastic material, or the pressing member 9 is improved in visibility as being colored differently from other parts. It is good also as what aimed at. Thus, if the pressing member 9 has a color different from that of other parts, it is possible to suppress the stepping off of the decorative tread board 7 and improve safety. In the figure, 9a indicates an upper end portion, 9b indicates a concave groove, and 9c indicates a bottom surface. The presser member 9 is fixed by a fixing tool 12 that penetrates the presser member 9 and the cutout upper surface 80b of the nose member 8 and reaches the base tread plate 4 in a state of being fitted in the concave groove 10 (see an enlarged view of FIG. 1). . In this way, the nose member 8 can be firmly fixed by the presser member 9 fitted in the concave groove 10. Further, the presser member 9 is fitted into a concave groove 10 extending over both the nosing member 8 and the decorative tread plate 7 and is fixed by a fixing tool 12. Therefore, the presser member 9 also has a role of fixing both the nosing member 8 and the decorative tread board 7 together with one member.

  As shown in FIGS. 1 and 4B, the cover member 11 is fitted and disposed in the concave groove 9 b of the pressing member 9 so as to cover from above. The material of the cover member 11 is not particularly limited, but may be the same as that of the pressing member 9. The cover member 11 is formed in an inverted U-shaped cross section. In the figure, 11a indicates a leg portion and 11b indicates an upper surface. The cover member 11 is disposed such that the leg portion 11 a abuts against the bottom surface 9 c of the presser member 9 so as to cover the head of the fixture 12. The upper surface 11 b of the cover member 11 is substantially the same height as the upper cover portion 8 a of the nose member 8 and the upper surface 7 a of the decorative tread plate 7 in a state where the cover member 11 is fitted in the concave groove 9 b of the pressing member 9. It is formed as follows. Since the fixing member 12 for fixing the presser member 9 can be covered by the cover member 11, the staircase 1 having a good appearance can be obtained.

Next, an example of the construction procedure of the staircase 1 configured as described above will be described with reference to FIGS. In addition, the procedure demonstrated below is an example, Comprising: It is not limited to this.
First, the pair of side plates 2 and 2 are fixed along a wall surface (not shown). Next, as shown in FIG. 2 (a), the erection member 3 is disposed so as to be fitted over the concave grooves 2c, 2c of the pair of side plates 2, 2. At this time, in order to more firmly fix the erection member 3 in the concave groove 2c, an adhesive may be applied to the fitting portion, but a fixing means such as a wood screw for fixing the erection member 3 to the side plate 2 is not necessary. . Further, when the erection member 3 is disposed, a level may be placed on the upper surface 3a of the erection member 3 to check whether it is disposed horizontally.

  Next, as shown in FIG. 2B, the base tread 4 is disposed. The lower surface 4c of the base plate 4 is arranged on the horizontal surface 2a of the side plate 2 and the upper surface 3a of the erection member 3, and the left and right ends of the rear end surface 4d are arranged so as to contact the vertical surfaces 2b, 2b of the pair of side plates 2, 2. To do. Then, the notch front end surface 40b of the notch 40 and the vertical surfaces 2b and 2b of the lower side plates 2 and 2 are substantially flush with each other. In this state, it goes to the back side of the place where the stairs 1 is installed, and the base tread 4 is fixed from the lower surface 4c side with a tread fixing tool (not shown). At this time, a level is also placed on the upper surface 4a of the base tread 4 to check whether it is horizontal. The stairs composed of the pair of side plates 2, 2, the erection member 3, and the base tread plate 4 through the construction procedure as described above can be used as the temporary stairs 100, that is, the work elevating passage.

  When the use as the temporary staircase 100 is finished, the decorative tread board 7, the kick board 6 and the like are sequentially constructed to finish the staircase 1. First, as shown in FIG. 3A, a decorative tread board 7 is disposed. The decorative tread 7 is disposed so as to overlap the upper surface 4a of the base tread 4, and the rear end surface 7d of the decorative tread 7 is disposed so as to contact the vertical surface 2b of the side plate 2. In this state, the decorative tread 7 is Fix to the base tread 4 with double-sided tape, adhesive or the like.

Subsequently, the kick plate 6 is disposed. As shown in FIG. 1, the kick plate 6 has its lower end surface 6 c placed on the upper surface 7 a of the lower decorative tread plate 7, and the upper end surface 6 a of the kick plate 6 contacts the notch lower surface 40 a of the notch portion 40 of the base tread plate 4. It is installed so as to touch or be close. Further, the upper rear surface 6da of the kick plate 6 is disposed so as to contact the notched front end surface 40b of the notched portion 40, and the left and right end portions of the rear surface 6d are disposed to contact the vertical surfaces 2b, 2b of the side plates 2, 2. At this time, the kick plate 6 may be fixed to the side plates 2 and 2 and the cutout portion 40 with an adhesive or the like.
Next, the nose member 8 is disposed. As shown in the enlarged view of FIG. 3B, the butted end face 8d of the nosing member 8 abuts on the front end face 5b of the decorative tread plate 5, and the lower end face 8e is in the lower step kick plate as shown in the enlarged view of FIG. 6 is arranged in contact with the front upper end 6ba. The concave groove 10 straddling both is provided by abutting the nose notch 80 of the nose member 8 and the tread notch 70 of the decorative tread 7. Then, the presser member 9 is fitted into the groove 10 formed in this way, and the presser member 9 is fixed to the groove 10 by the fixture 12 that penetrates the presser member 9 and the nose member 8 from above. Thus, after fixing the nosing member 8 and the pressing member 9, the cover member 11 is fitted into the concave groove 9 b of the pressing member 9. Through the construction procedure as described above, the staircase 1 shown in FIGS. 1 and 4B is constructed.

As described above, according to the present embodiment, the nosing member 8 and the decorative tread board 7 can be fixed together to the base tread board 4 with one presser member 9, and the construction becomes easy. Further, the nose notch 80 of the nose member 8 is formed larger than the step board notch 70 of the decorative tread board 7, and the nose member 8 penetrates the presser member 9 and the notch upper surface 80 b of the nose member 8 to the base tread 4. It can fix firmly with the fixing tool 12 which reaches. Further, the presser member 9 is fixed to the front end upper surface of the decorative tread plate 7, that is, the tread plate cutout portion 70, and the rear end upper surface 7aa of the decorative tread plate 7 is disposed so that the lower end surface 6c of the kick plate 6 contacts. Therefore, as shown in FIG. 1, the front and rear end portions of the upper surface 7a of the decorative tread plate 7 are pressed from above by the presser member 9 and the kick-in plate 6, so that the warp of the decorative tread plate 7 can be suppressed, and the decorative tread plate 7 can be removed. Can be prevented. Furthermore, the usage amount of an adhesive or the like for fixing the decorative tread 7 to the base tread 4 can be suppressed.
When the temporary staircase 100 is used, even if a building material or the like comes into contact with the base tread 4 and the base tread 4 may be scratched, the makeup tread 7 and the nose member 8 are disposed later. Therefore, scratches and the like on the base tread 4 can be covered with the decorative tread 7 and the nose member 8. Therefore, it can be set as the temporary staircase 100 which does not need curing. In addition, assuming the future renovation of the decorative tread board 7 and the kick board 6 to be constructed on the temporary staircase 100 and attaching them with as little use of adhesive as possible so that they can be easily removed, the construction of the staircase 1 Later, the decorative tread 7 and the kick-in plate 6 can be exchanged while leaving the base tread 4 as it is.

  The shape of the staircase 1, the temporary staircase 100, the pair of side plates 2, 2, the erection member 3, the base tread plate 4, the kick plate 6, the decorative tread plate 7, the stair nosing member 8, the pressing member 9, the cover member 11, etc. The configuration is not limited to the illustrated example. Moreover, the fixing means of each member, the fixing procedure, etc. are not limited to the example of a figure, and a construction procedure is not limited to the above.

DESCRIPTION OF SYMBOLS 1 Stairs 2 Side plate 2a Horizontal surface 2b Vertical surface 2c Concave groove 3 Construction member 3a Upper surface 4 Base tread 4a Upper surface 4b Front end surface 40a Lower surface (notch lower surface)
6 Kick plate 7 Decorative plate 7b Front end 70 Notch (tread notch)
8 Nose member 8d End face (butt end face)
80 Notch (Nose notch)
9 Presser member 10 Groove 12 Fixing tool

Claims (4)

A pair of left and right side plates in which a horizontal plane and a vertical plane are alternately formed, a foundation tread supported by the horizontal plane, a kick board disposed on the vertical plane, and a decorative tread fixed to the upper surface of the foundation tread And a staircase having a substantially U-shaped nose member disposed so as to cover the upper surface, front end surface, and lower surface of the base tread,
The nosing member is formed such that an end surface arranged on an upper surface of the base tread of the nosing member is in contact with a front end surface of the decorative tread,
On the upper surface of the contact portion between the nosing member and the decorative tread board, a notch formed in each notch is provided with a notch that extends over both sides, and is fitted into the notch. A staircase characterized in that a presser member to be disposed is fixed by a fixture that passes through the presser member and reaches the base tread. In claim 1,
The staircase characterized in that the fixing tool penetrates the nose member from the presser member and is fixed to the base tread. In claim 2,
A staircase characterized in that a notch formed in the nose member is formed larger than a notch formed in the decorative tread. In any one of Claims 1-3,
A staircase characterized in that a lower end surface of the kick plate is disposed in contact with a rear end upper surface of the decorative tread plate.

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