JP2016069966A - Nosing member, staircase structure, and staircase reforming method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attach a nosing member to a treadboard with a good appearance by easy work.SOLUTION: A nosing member 16 for being fixed to a front end of a treadboard 8 of a staircase S includes an approximately plate-like top surface part 17 that covers a front end of a top surface of the treadboard 8, and an approximately plate-like front part 18 that is detachably assembled to the top surface part 17 to cover a front end surface of the treadboard 8.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a nose member, a staircase structure, and a method for reforming a staircase.

  2. Description of the Related Art Conventionally, it is known that a nose member is attached to a front end portion of a stair tread for the purpose of preventing slippage when moving up and down.

  In Patent Document 1, a base portion fixed to the front end portion of the upper surface of the step board of the staircase, and a substantially L-shaped cross section covering the upper surface of the base portion and the front end surface of the tread plate while being fitted to the base portion. And a nose member provided with a cover portion.

JP 2005-207063 A

  However, in the above-mentioned Patent Document 1, since the cover portion is bent in an L-shaped cross section, when cutting according to the shape of the tread with an electric tool such as a circular saw, if the batten is not used, it will be cracked at the bent portion. Chipping is likely to occur, and the cutting work is troublesome. Further, even if a batten is used, it is difficult to cut into a desired dimension, and a gap is generated between the nose member and the side beam, a wall or the like due to the dimensional error of the cover portion, and the appearance of the stairs is likely to deteriorate.

  These problems are particularly prominent when the portion covering the upper surface of the base portion of the cover portion is cut obliquely for the purpose of using the stair nosing member around the staircase.

  This invention is made | formed in view of this point, The place made into the objective is to attach a nose member to a tread with good appearance by easy operation | work.

  In order to achieve the above object, the present invention is characterized in that the nosing member is composed of an upper surface portion and a front surface portion that is removably assembled to the upper surface portion.

  Specifically, according to a first aspect of the present invention, in the nose member fixed to the front end portion of the step board of the staircase, the substantially plate-like upper surface portion covering the upper front end portion of the tread plate and the removably assembled to the upper surface portion. And a substantially plate-shaped front surface portion covering the front end surface of the tread.

  According to a second aspect of the present invention, in the staircase structure in which the nose member of the first invention is fixed to the front end portion of the stepboard, the stepboard is in a region excluding the tread base material and the front end portion of the top surface of the tread base material. The upper surface portion is fixed to the front end portion of the upper surface of the tread base material.

  3rd invention is a staircase structure of 2nd invention, Comprising: The said front-surface part has coat | covered the said tread base material over the whole up-down direction, It is characterized by the above-mentioned.

  4th invention is the staircase structure of 2nd or 3rd invention, Comprising: The said upper surface part is assembled | attached to the base part fixed to the front-end part of the said tread base material upper surface, and this base part so that removal is possible. And a cover portion.

  5th invention is the staircase structure of any one of 2nd-4th invention, Comprising: The said staircase has a surrounding staircase part, The upper surface part of the nose member attached to the front-end part of the step board of the said surrounding staircase part Inclined end edges are formed on both sides of the step width direction.

  6th invention peels off the surface material of the said tread from a tread base material in the renovation method of the staircase which has the staircase structure of any one invention of 2-5, The upper surface part of the said nose member from a tread base material After removing and removing the front part of the nosing member from the upper surface part, the surface material is attached to the area excluding the front end part of the top surface of the tread base material, the upper surface part is fixed to the front end part of the top surface of the tread base material, and A front part is assembled to the upper part.

  According to the first aspect of the invention, the substantially plate-like upper surface portion and front surface portion can be cut separately in accordance with the shape of the tread board, so that the use of a batten is unnecessary as compared with the case of cutting the L-shaped cover member. Therefore, cutting work becomes easier. In addition, since the upper surface portion and the front surface portion to be cut are planar, they can be easily cut to a desired size. Therefore, a gap due to a dimensional error of the nose member is less likely to occur between the nose member and the side beam, the wall, etc., and the appearance of the stairs around the nose member can be improved.

  According to the second invention, the nosing member includes two members, the upper surface portion and the front surface portion, and the front surface portion is removable with respect to the upper surface portion, so that the renovation for changing the thickness of the surface material is performed. However, the front surface portion is not replaced, and only the upper surface portion can be replaced with one having a thickness corresponding to the thickness of the new surface material. Therefore, the cost required for renovation can be reduced as compared with the case where the entire nose member is replaced.

  According to the third aspect of the invention, the nose member includes two members, the upper surface portion and the front surface portion, and the front surface portion is removable with respect to the upper surface portion, so that the reform is performed to change the thickness of the tread base material. Even in this case, the upper surface portion is not replaced, and only the front surface portion can be replaced with one having a vertical width corresponding to the thickness of the new tread base material. Therefore, the cost required for renovation can be reduced as compared with the case where the entire nose member is replaced.

  According to the fourth invention, the upper surface portion includes two members of the base portion and the cover portion, and the cover portion is removable with respect to the base portion, so that the base portion remains fixed to the tread base material, By simply removing the old cover part from the base part and attaching a new cover part to the base part, the appearance of the upper surface part can be beautifully finished. Even when the surface material is replaced, a new cover portion corresponding to a new color or pattern of the surface material can be attached to the base portion while the base portion is fixed to the tread base material. Therefore, compared with the case where the whole upper surface part is replaced | exchanged, the effort and cost which are required for renovation can be reduced.

  According to the fifth invention, since the inclined end edge can be formed by obliquely cutting the upper surface portion formed in a substantially plate shape, the use of the batten compared to the case of cutting the L-shaped cover member Therefore, the cutting work becomes easier and the desired size can be easily cut. Therefore, a gap due to a dimensional error of the nose member is less likely to occur between the nose member and the side beam, the wall, etc., and the appearance of the stairs around the nose member can be improved.

  According to the sixth invention, since the front part of the nosing member is once removed from the upper surface part and assembled, only the upper surface part is replaced with a new one without replacing the front surface part as necessary, By replacing only the front part with a new one without replacement, the cost required for renovation can be reduced as compared with the case where the entire nose member is replaced.

FIG. 1 is a front view of a staircase according to an embodiment of the present invention. FIG. 2 is a side view of the stairs. FIG. 3 is a plan view of the stairs. FIG. 4 is an enlarged perspective view showing a straight staircase portion of the staircase. FIG. 5 is an enlarged side view of the side beam in the staircase structure of the straight staircase section. FIG. 6 is an enlarged cross-sectional view of a tread with a nose member and a surface material attached to the tread base. FIG. 7 is a perspective view showing side girders around the stairs.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application, or its application.

  1 to 3 show a staircase S according to an embodiment of the present invention. The staircase S has, for example, seven lower straight staircase sections S1 extending obliquely upward in a straight line from the floor surface F1 below the building, and a lower end connected to the upper end of the lower straight staircase section S1. The lower end is connected to the upper end of the three-stage staircase S2, for example, which extends obliquely upward at 90 ° with respect to the staircase S1, and the upper end is connected to the floor F2 on the floor. And, for example, four upper straight steps S3 extending obliquely upward in a straight line.

  In the following description, for convenience of explanation, the front side is also referred to as “front” and the back side is also referred to as “rear” in the upward direction of the staircase S (the direction indicated by the one-dot chain line arrow in FIG. 3).

The lower and upper straight staircase portions S1 and S3 are side girder steps having the same staircase structure, and left and right side girders 1 and 1 arranged and fixed so as to face the base wall W in the left and right direction, A plurality of kick plates provided between a plurality of treads 8, 8,... Spanned between the side girders 1, 1 and a front end portion of the lower surface of the upper tread plate 8 and a rear side portion of the upper surface of the lower tread plate 8. ...

  The kick board 13 is made of the same material as the kick board used for a general staircase, and is, for example, plywood, particle board, MDF, composite plywood, laminated material, or the like.

  As shown in FIG. 6, each of the treads 8 includes a tread base material 9 having a predetermined strength, and a surface material 10 that is integrally attached to the upper surface of the tread base material 9. The tread base material 9 is made of a plate material having a predetermined thickness (for example, 36 mm), and the material thereof is not particularly limited, and the same material as a tread board used for a general staircase is used, for example, plywood, particle board, Composite plywood, laminated wood, solid wood, etc. A fitting groove 9 a for fitting the upper end portion of the kick plate 13 is formed at the front end portion of the lower surface of the tread board substrate 9.

  The surface material 10 is a thin plate having a predetermined thickness (for example, 7.5 mm), and includes, for example, a decorative material and a vibration damping material and / or a cushion material attached to the back surface thereof. As the decorative material, a woody base material such as MDF or hardboard, a material in which these are impregnated with a resin, or the like is used. As the damping material, a PVC mat, a rubber mat, an asphalt mat, an insulation board, or the like is used. As the cushion material, a non-woven fabric, a resin foam such as urethane, or the like is used.

  The surface material 10 is not limited to these, and may be a single material or a composite material, and a resin decorative sheet, a resin base material, a wood base material, or the like can be used.

  The means for adhering the surface material 10 to the tread base material 9 is not limited, but particularly when the renewability of the tread plate 8 is required, the adhesive is such that the surface material 10 is cleanly removed from the tread base material 9 when remodeling. It is desirable to use an agent or a tape. The adhesive is preferably a low-tack adhesive or an elastic adhesive. For example, a silylated urethane adhesive, a special silicone resin adhesive, or a modified silicone resin adhesive is used, and an adhesive whose adhesive peel strength is appropriately adjusted is used. Also good. As the tape, a double-sided tape or the like whose one surface is low-adhesive is used.

  Further, as shown in FIG. 6, the width of the step board base material 9 and the surface material 10 are different from each other in the depth direction (front-rear direction) of the staircase, and the width of the surface material 10 is described later than the width of the step board base material 9. 16 is shortened by a width dimension (for example, 26 mm) of the base portion 19.

  As shown in FIG. 5, on the opposing surfaces of the left and right side girders 1, 1, a tread plate fitting groove 2 extending in the horizontal front-rear direction for fitting the left and right end portions (end portions in the length direction) of each tread plate 8. 2 and ... and the kick plate fitting grooves 5, 5, ... extending in the vertical direction for fitting the left and right end portions (end portions in the length direction) of the respective kick plates 13 are alternately formed. Yes.

  The left and right end portions of the tread plate 8 are fitted into the tread plate fitting grooves 2, and each tread plate fitting groove 2 has a lower groove side surface inclined downward and the groove width toward the rear side. When the tread plate 8 is fitted into the tread plate fitting groove 2, a gap is generated between the lower rear end of the tread plate 8 and the lower groove side surface of the tread plate fitting groove portion 2. The tread 8 is fixed by driving a wedge (not shown) into the gap.

  In the staircase structure of the lower and upper straight staircase portions S1 and S3, the left and right end portions of each tread plate 8 are fitted into the tread plate fitting grooves 2 and 2 of the side girders 1 and 1, and are fixed by wedges. . Further, the left and right end portions of the kick plate 13 are fitted to the respective kick plate fitting grooves 5 and 5 of the side girders 1 and 1, and the upper end portion of the kick plate 13 is a fitting groove on the lower surface of the upper tread plate base material 9. The lower end is fixed to the rear end of the lower tread plate 8.

  As shown in FIG. 6, a nose member 16 is fixed to a front end portion (step nose portion) of each step board 8 so that a person who moves up and down the stairs S does not slide on the step board 8. The surface material 10 is attached to the upper surface of the tread base material 9 in the range of the rear side (back side) from the member 16, that is, the region excluding the front end portion of the upper surface of the tread base material 9. As the nosing member 16, for example, a molded body of PVC resin, a molded body in which a decorative resin sheet is bonded to an ABS resin base material, or the like is used.

  The nose member 16 includes a substantially plate-like upper surface portion 17 that covers the front end portion of the upper surface of the tread plate 8 and a substantially plate-shaped front surface portion that is detachably assembled to the upper surface portion 17 and covers the front end surface of the tread plate 8. 18. The upper surface portion 17 includes a base portion 19 that is directly fixed to the front end portion of the upper surface of the tread base material 9, and a cover portion 20 that is removably assembled to the base portion 19.

  The base portion 19 includes a plate-like base portion main body 19a extending in the left-right direction, and a rib plate-like protrusion on the rear end portion of the upper surface of the base portion main body 19a and a portion slightly behind the front end portion. 19b and 19c are integrally projected over the entire step width direction, and plate-like engagement pieces 19d and 19d are inward (in a direction approaching each other) at the tip portions of these projections 19b and 19c. It protrudes integrally over the entire staircase width direction. In addition, a plate-like opposing wall portion 19e is integrally provided on the front side of the front end portion of the projecting portion 19c on the front side of the entire step width direction, and the opposing wall portion 19e is located on the front side of the projecting portion 19c. It faces the base portion main body 19a. Opposing piece portions 19f, 19f project inwardly (in a direction approaching each other) in the entire width direction of the staircase at the front end portion of the facing wall portion 19e and the front end portion of the base portion main body 19a. . The length of the left and right sides of the base portion main body 19a is the distance between the opposing surfaces of the left and right side girders 1 and 1 (the end portion fitted into the tread plate fitting groove 2 of the side girders 1) in order to eliminate the need for cutting at the site. The length of the base body 19a in the front-rear direction is set to be the width of the step board base 9 and the surface material 10 in the depth direction of the staircase (front-rear direction). The difference is the same (for example, 26 mm), and the base portion main body 19a is directly fixed to the front end portion of the upper surface of the tread base material 9 with double-sided tape and staples or screws.

  On the other hand, the cover part 20 includes a plate-like cover part main body 20a extending in the left-right direction, and the length of the cover part main body 20a is the distance between the opposing surfaces of the left and right side girders 1 and 1 (side girders 1). This is the same as the length of the tread base material 9 excluding the end portion fitted in the tread plate fitting groove 2, and is slightly longer than the left and right lengths of the base portion 19. Since the left and right lengths of the cover part 20 are longer than the base part 19, deterioration of the appearance due to the protrusion of the base part 19 from the left and right sides of the cover part 20 is prevented. On the upper surface (outer surface) of the cover body 20a, a plurality of anti-slip ridges 20b, 20b,. Rib plate-like protrusions 20c and 20c are integrally formed over the entire step width direction in the vicinity of the front end and the rear end of the lower surface (inner surface) of the cover body 20a. Engaging claws 20d and 20d are integrally projected outwardly (in a direction away from each other) over the entire step width direction at the lower ends of the protrusions 20c and 20c.

  By fitting the projections 20c, 20c of the cover part 20 between the projections 19b, 19c of the base part 19 and engaging the engagement claws 20d, 20d with the engagement pieces 19d, 19d, the cover part 20 is Removably assembled to the base portion 19, the cover portion 20 covers the area excluding the front end portion of the base portion 19, and the rear end portion of the cover portion 20 covers the front end portion of the surface material 10 of the tread plate 8. . Since the front end portion of the surface material 10 is covered by the cover portion 20, the front end portion of the surface material 10 is also rough cut, and the construction is facilitated.

  The front portion 18 includes a plate-like front portion main body 18a extending in the left-right direction, and a plate-like upper locking portion 18b is provided on the rear side across the entire step width direction at the upper end of the front portion main body 18a. In addition to projecting integrally, a ridge portion 18c is integrally projected on the rear side over the entire width of the staircase slightly below the upper end of the front surface main body 18a. Claw portions 18d, 18d projecting in the vertical direction are formed at the front end portion of the front and rear sides over the entire step width direction. In addition, a plate-like lower locking portion 18e is integrally provided at the lower end of the front surface main body 18a so as to protrude rearward over the entire step width direction. The left and right lengths of the front portion main body 18a are set to be the same as those of the cover portion 20 main body. Further, other parts such as soft PVC resin are provided on the front surface (front surface) and upper and lower end surfaces of the front surface body 18a, the upper surface of the upper locking portion 18b, and the lower surface of the lower locking portion 18e. A surface layer 18f made of a softer resin is formed.

  With the front surface portion 18 in contact with the front end surface of the tread base material 9, the upper locking portion 18 b is locked to the front end portion of the base portion 19 of the upper surface portion 17 (upper surface of the opposing wall portion 19 e). The side locking portion 18e is locked to the front lower end portion of the tread base material 9, and the ridge portion 18c is fitted between the facing pieces 19f and 19f of the base portion 19 so that the claw portions 18d and 18d are turned to the facing pieces. By engaging with 19f, 19f, the front surface portion 18 is removably assembled to the base portion 19 of the upper surface portion 17, and the front surface portion 18 covers the tread base material 9 over the entire vertical direction, and the upper locking portion. 18 b covers the front end portion of the base portion 19.

  The surrounding staircase portion S2 is provided so as to connect the upper and lower straight staircase portions S1 and S3. The surrounding staircase portion S2 has the same structure as the straight staircase portions S1 and S3. As shown in FIG. 7, the upper and lower sides connected at right angles to each other on the outer side in the rotation direction of the surrounding staircase portion S2. Two plate-like side girders 1 are arranged, and these side girders 1 are fixed to the base wall surface W. In the tread board fitting grooves 2 provided in these side girders 1, outer end portions of the lower, middle and upper treads 24 to 26 are fitted.

  There are no side girders on the inside in the turning direction of the turning step portion S2, and the inner end portions of the respective tread plates 24 to 26 are a plurality of receiving materials (not shown) fixed to the base wall surface W, or cuts provided on the columns. It is fixed to the notch. Further, each of the treads 24 to 26 in the surrounding staircase portion S2 is composed of a tread base material 9 and a surface material 10 adhered to the upper surface thereof, like each of the treads 8 of the straight staircase portions S1 and S3. Detailed explanation is omitted.

  Next, the construction method of the said staircase S is demonstrated. In each straight staircase portion S1, S3, a plurality of tread plate fitting grooves 2, 2,... Into which the tread plate 8 is fitted are formed on the opposing surfaces of the left and right side girders 1, 1, and a plurality of kick plate fitting grooves. 5, 5,... Are formed, and the side girders 1, 1 are fixed to the base wall surface W with the height adjusted to each other.

  Next, the left and right end portions of the tread base material 9 of each tread plate 8 are fitted into the respective tread plate fitting grooves 2 of the left and right side girders 1, 1, A wedge is driven into the gap between the tread base materials 9 to fix them. Further, in parallel with the fixing of the tread base material 9 to the side beam 1, the kick plate 13 is fixed between the upper and lower tread plate base materials 9, 9, and the left and right end portions of the kick plate 13 are inserted into the side girder 1. The upper end portion is fitted into the plate fitting groove 5 and the fitting groove 9 a of the upper tread base material 9, and the lower end portion of the kick plate 13 is fixed to the rear end portion of the lower tread base material 9.

  In this way, after fixing the plurality of tread base materials 9, 9, ... and the kick plates 13, 13, ..., an adhesive is applied to the upper surface of each tread base material 9, and the surface material 10 is used as the tread base material 9. Affix the front end of the top of the plate with a gap.

  Thereafter, the base portion 19 of the upper surface portion 17 of the nosing member 16 is fixed to the front end portion of the upper surface of the tread base material 9, and the cover portion 20 and the front surface portion 18 are assembled to the base portion 19.

  On the other hand, after the two side girders 1 and 1 are fixed to the foundation wall surface W, the outer end portions of the three tread plates 24 to 26 are also formed in the surrounding staircase portion S2 in the same manner as the step plates 8 of the straight staircase portions S1 and S3. Is inserted into the tread board fitting groove 2 provided in the side beam 1 and a wedge is driven into the gap between the tread board base material 9 and the lower groove side surface of the tread board fitting groove 2 to fix the tread board base material 9. Moreover, the inner side edge part of each tread plates 24-26 is fixed to the notch provided in the receiving material on the base wall surface W, or a pillar. Further, the nose member 16 is attached and fixed to the front end portion of the tread plate 8 in the same manner as the straight staircase portions S1 and S3. On both sides of the upper surface portion 17 of the nose member 16 attached to the front end portion of the step plate 8 of the surrounding staircase portion S2 in the step width direction, inclined end edges 17a are formed along the side girders 1 and the base wall surface W.

  Further, when the surface material 10 needs to be replaced for the renovation of the staircase S thus constructed, the tread base material 9 remains fitted in the tread board fitting groove 2 of the side beam 1. Then, the old surface material 10 may be peeled off from the tread base material 9 and then the new surface material 10 may be attached to the upper surface of the original tread base material 9.

  Therefore, in the present embodiment, the substantially plate-like upper surface portion 17 and front surface portion 18 can be cut separately in accordance with the shape of the tread plate 8, so that when a cover member having an L-shaped cross section is cut as in Patent Document 1. In comparison, cutting work becomes easier because the use of a batten is not required. Moreover, since the upper surface part 17 and the front surface part 18 to be cut are planar, they can be easily cut into desired dimensions. Accordingly, a gap due to a dimensional error of the nose member 16 is unlikely to occur between the nose member 16 and the side beam 1 and the base wall surface W or the column, and the appearance of the stairs around the nose member 16 can be improved.

  In particular, the nosing member 16 used for the surrounding staircase portion S2 has an inclined edge at a location covering the front end portion of the upper surface of the tread base material 9, but the upper surface portion 17 formed in a substantially plate shape is inclined. Since the inclined end edge 17a can be formed by cutting, the above-described effects of facilitating cutting work (construction) and improving the appearance as compared with the case of cutting a cover member having an L-shaped cross section as in Patent Document 1. Remarkably can be obtained.

  Further, when the nosing member 16 includes two members, an upper surface portion 17 and a front surface portion 18, and the front surface portion 18 is removable with respect to the upper surface portion 17, the reforming for changing the thickness of the surface material 10 is performed. However, it is possible to replace only the upper surface portion 17 with a thickness corresponding to the thickness of the new surface material 10 without replacing the front surface portion 18 of the nose member 16. That is, the surface material 10 is peeled off from the tread base material 9, the upper surface portion 17 of the nose member 16 is removed from the tread base material 9, and the front surface portion 18 of the nose member 16 is removed from the upper surface portion 17. Is attached to a region excluding the front end portion of the upper surface of the old tread base material 9, the new upper surface portion 17 is fixed to the front end portion of the upper surface of the old tread base material 9, and the old front surface portion 18 is attached to the new upper surface portion 17. be able to. Therefore, compared with the case where the whole nose member 16 is replaced | exchanged, the cost required for renovation can be reduced.

  In addition, the nosing member 16 includes two members, an upper surface portion 17 and a front surface portion 18, and the front surface portion 18 is removable with respect to the upper surface portion 17, so that reforming is performed to change the thickness of the tread base material 9. Even in this case, the upper surface portion 17 is not replaced, and only the front surface portion 18 can be replaced with one having a vertical width corresponding to the thickness of the new tread base material 9. That is, the surface material 10 is peeled off from the tread base material 9, the upper surface portion 17 of the nose member 16 is removed from the tread base material 9, and the front surface portion 18 of the nose member 16 is removed from the upper surface portion 17. Adhering to a region excluding the front end portion of the upper surface of the new tread base material 9, fixing the old upper surface portion 17 to the front end portion of the upper surface of the new tread base material 9, and attaching a new front surface portion 18 to the old upper surface portion 17 be able to. Therefore, compared with the case where the whole nose member 16 is replaced | exchanged, the cost required for renovation can be reduced.

  Further, the upper surface portion 17 of the nose member 16 has two members, that is, a base portion 19 and a cover portion 20, and the cover portion 20 can be detached from the base portion 19. By simply removing the old cover part 20 from the base part 19 and attaching a new cover part 20 to the base part 19 while being fixed to the base part 19, the appearance of the upper surface part 17 can be finished beautifully. Even when the surface material 10 is replaced, the base portion 19 remains fixed to the tread base material 9 and the old cover portion 20 is removed and a new cover portion 20 corresponding to the color or pattern of the new surface material 10 is removed. 19 can be attached. Therefore, compared with the case where the whole upper surface part 17 is replaced | exchanged, the effort and cost which are required for reform can be reduced.

  When the nose member 16 is assembled, after attaching the front face portion 18 to the base portion 19 and then fitting the cover portion 20 from above, the opposing piece portion 19f is compressed and the front face portion 18 is hardly separated. An effect can be obtained.

(Other embodiments)
In addition, in the said embodiment, although applied to the staircase S which combined the straight staircase part S1, S3 and the surrounding staircase part S2, this invention is applied also to the staircase structure of the staircase which has only a straight staircase part. Can do.

  The present invention facilitates the cutting work and can improve the appearance of the staircase, so it is extremely useful and has high industrial applicability.

S Stair S2 Stairs around 8 Step board 9 Step board base material 10 Surface material 16 Nose member 17 Upper surface portion 17a Inclined edge 18 Front surface portion 19 Base portion 20 Cover portion

Claims (6)

In the nose member fixed to the front end of the stair tread,
A substantially plate-like upper surface portion covering the upper front end portion of the tread;
A nose member comprising a substantially plate-shaped front surface portion removably assembled to the upper surface portion and covering the front end surface of the tread. In the staircase structure in which the nose member according to claim 1 is fixed to the front end portion of the step board of the staircase,
The tread has a tread base material, and a surface material integrally bonded to a region excluding the front end of the tread base material upper surface,
The step structure is characterized in that the upper surface portion is fixed to a front end portion of the upper surface of the tread base material. The staircase structure according to claim 2,
The front structure covers the tread base material over the entire vertical direction. The staircase structure according to claim 2 or 3,
The top surface portion includes a base portion that is fixed to a front end portion of the top surface of the tread base material, and a cover portion that is removably assembled to the base portion. The staircase structure according to any one of claims 2 to 4,
The above staircase has a surrounding staircase section,
A staircase structure characterized in that inclined end edges are formed on both sides in the stepwise width direction of the upper surface portion of the nose member attached to the front end portion of the step board of the surrounding staircase portion. In the renovation method of the staircase having the staircase structure according to any one of claims 2 to 5,
The surface material of the tread board is peeled off from the tread base material, the upper surface portion of the nose member is removed from the tread base material, and the front surface portion of the nose member is removed from the upper surface portion, and then the front surface portion of the top surface of the tread base material is removed. A method for reforming a staircase, characterized in that the upper surface portion is fixed to the front end portion of the upper surface of the tread base material, and the front surface portion is assembled to the upper surface portion.

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