JP2015055097A - Stair structure, stair, construction method of stair, and reforming method of stair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow quick and beautiful finish at the time of reforming or when a surface material 10 is pasted on a footboard 8, in a stair structure in which the footboard 8 including a footboard base material 9 and the surface material 10 which is pasted on an upper surface of the footboard base material 9 is built in a stringer 1.SOLUTION: A length L2 of the surface material 10 in stair width direction is made shorter than a length L1 of the footboard base material 9. The stringer 1 is provided with a base material engagement groove part 3 in which the footboard base material 9 is inserted, and a surface material engagement groove part 4 in which the surface material 10 is inserted. A depth d2 of the surface material engagement groove part 4 is made shallower than a depth d1 of the base material engagement groove part 3, so that it is only required to rough-cut an end part of the surface material 10 at construction for building in the surface material engagement groove part 4 of the stringer 1. At the time of reforming, with the footboard base material 9 being as it is, an old surface material 10 is peeled from the footboard base material 9 and the end part thereof is pulled out of the surface material engagement groove part 4 of the stringer 1, and then a new surface material 10 is inserted in the same surface material engagement groove part 4 to allow pasting to the footboard base material 9.

Description

  The present invention relates to a staircase structure, a staircase having the staircase structure, a staircase construction method, and a staircase reforming method.

  2. Description of the Related Art Conventionally, it has been known to apply a cosmetic material to the surface of a step board in a staircase to impart makeup and sound insulation. In general, the decorative material is applied on the side plate after the tread base material is firmly incorporated into the side girders. Therefore, the decorative material must be cut and finished according to the shape of the tread base material after incorporation. It took time and effort to measure accurately and carefully on site.

  At the parting part with the side girders, if the edge of the decorative material is roughly cut and covered with the parting material, it can be finished beautifully, but the number of parts increases by the amount of the parting material, and the economy is also reduced. . It is also conceivable to apply a cosmetic material to the tread board in advance, and finish it by installing it in the side girders in the same way as the tread board base material. Only the material may swell and the finish may deteriorate.

  For this reason, conventionally, as shown in Patent Document 1, it has been proposed to provide a space for the cosmetic material to escape inside the side beam.

  Moreover, as shown in Patent Document 2, a method of covering all of the tread board, the nose, and the kick board has also been proposed.

JP-A-8-333858 JP 2004-285667 A

  However, since the technique of Patent Document 1 does not change that the decorative material is soft, in a housing member that should be firmly fixed in order to improve safety like the step board of a staircase, the tread of the tread board is deteriorated due to deterioration of the decorative material. There is a problem that it cannot be relieved in the long term.

  In addition, at the time of replacement when the decorative material is deteriorated, it is necessary to measure and finish at the site as before, which is troublesome.

  Moreover, as shown in Patent Document 2, the method of covering all the treads and the like is large and time-consuming and has low economic efficiency.

  Accordingly, an object of the present invention is to provide a staircase structure, staircase, and its construction method that can be finished quickly and beautifully even when a surface material such as a decorative material is stuck to a tread, and can be finished quickly and beautifully even when renovating. And to propose a reforming method.

  In order to achieve the above object, in the present invention, the length of the base material of the tread board and the surface material in the staircase is made different so that the fitting depth of each side beam becomes shallower in the surface material. did.

  Specifically, the first invention is a staircase structure in which a tread having a tread base material and a surface material attached to the upper surface of the tread base material is incorporated in a side girder, the surface in the step width direction The length of the material is shorter than the length of the tread base material, and the side girders are provided with a base material fitting portion into which the tread base material is fitted, and a surface material fitting portion into which the surface material is fitted, The fitting depth of the surface material to the material fitting portion is characterized by being shallower than the fitting depth of the tread base material to the substrate fitting portion.

  In the first invention, the length of the surface material is shorter than the length of the tread base material, and the base material fitting portion and the surface material fitting portion having a shallower fitting depth are provided on the side girders. It is possible to fit and fix the tread base material and the surface material independently to the side girders. First, for example, the end of the tread base material is fitted to the base mating part of the side girders. Then, the end of the surface material may be fitted to the surface material fitting portion in that state. That is, even if a base mating portion and a surface material fitting portion are provided on the side girders, if the respective fitting depths are the same, the tread board base material and the surface material are fixed independently. Can not do it. At that time, the construction of the surface material only needs to be rough-cut at the end portion and incorporated into the surface material fitting portion of the side beam, and the construction speeds up and the construction period is shortened.

  Moreover, since the surface material is finished to be incorporated into the surface material fitting portion of the side beam, a beautiful appearance is obtained without requiring a parting material.

  In addition, only the surface material can be replaced independently of the tread base material. When the surface material needs to be replaced, the tread base material is left as it is, and the old surface material is peeled off from the tread base material. The end part is pulled out from the surface material fitting part of the side beam, and then the new surface material is fitted into the surface material fitting part of the side beam and attached to the tread base material. Finished.

  Since the tread is made by attaching a surface material to the upper surface of the hard tread base material, the hard tread is fixed to the side girders to the last, and the safety is high.

  According to a second aspect of the present invention, in the staircase structure of the first aspect, a nose member is fixed to the front side end portion of the tread base material, and a surface material is attached to the upper surface of the tread base material that is behind the nose member. The nosing member includes a base portion that is directly fixed to the tread base material and a cover portion that is removably assembled to the base portion.

  In the second aspect of the invention, the nose member includes two members, a base portion and a cover portion, and the cover portion is removable from the base portion. It is only necessary to remove the cover part from the base part and replace the surface material while it is fixed to the material, and then fit the cover part into the base part again.

  A staircase of a third invention has a straight staircase portion having the staircase structure of the first or second invention, and a surrounding staircase portion connected to the straight staircase portion. And a tread plate having a surface material adhered to the upper surface of the tread base material is mounted and fixed on the upper surface of the side beam of the template.

  In this third invention, in the staircase combining the straight staircase portion and the surrounding staircase portion connected to the straight staircase portion, the surrounding staircase portion that is difficult to construct as compared to the straight staircase portion is the same as the straight staircase portion. Rather than having a staircase structure, a tread board is placed on the upper surface of the tiered side girders, so that the construction of staircases is quicker even in the surrounding staircases where construction is difficult, and the construction period is shortened.

  According to a fourth aspect of the present invention, in the staircase of the third aspect, the step-type side girder of the surrounding staircase portion and the base wall surface to which the side girder is fixed and the step plate of the step-type side girder are mounted. An elastic material is provided between the tread board placing portion and the tread board, respectively.

  According to the fourth aspect of the present invention, the elastic material is respectively provided between the side surface on the base wall surface side and the base wall surface in the stage-type side girder of the surrounding staircase part, and between the step board mounting portion and the tread board of the stage type side girder. It will be interposed, and by these elastic materials, the soundproofing and sound insulating properties in the surrounding staircase can be enhanced.

  5th invention is the construction method of the staircase which has the staircase structure of 1st or 2nd invention, Comprising: After fixing a tread board base material to the base material fitting part of a side beam, the surface material is the above-mentioned It sticks to a tread board base material, and it fits in a surface material fitting part.

  In this 5th invention, after providing the base material fitting part and the surface material fitting part in the side spar and fitting and fixing the tread base material in the base material fitting part of the side spar, Stairs are constructed by sticking to the tread base material and fitting into the surface material fitting part. This makes it possible to easily form the above staircase structure.

  A sixth invention is a method for reforming a staircase having the staircase structure according to the first or second invention, wherein the surface material of the tread is peeled off from the tread base material and extracted from the surface material fitting portion of the side beam. A new surface material is adhered to the upper surface of the tread base material and is fitted into the surface material fitting portion of the side beam.

  According to the sixth aspect of the present invention, when the tread is remodeled, the tread base material is kept fitted in the base mating portion of the side girder, and the surface material is peeled off from the tread base material and the side girder surface material. After extracting from the fitting portion, a new surface material may be attached to the upper surface of the original tread base material and fitted into the surface material fitting portion of the side beam. In this way, by simply peeling off the original surface material and newly attaching the surface material, the staircase can be reformed, and the remodeling can be easily performed.

  As described above, according to the first invention, in the staircase structure in which the step board having the surface material attached to the upper surface of the tread base material is incorporated in the side girders, the length of the surface material in the step width direction is determined. The base material fitting part and the surface material fitting part with a shallower fitting depth are provided on the side girders, so that when the stairs are constructed, For example, the end part is fitted to the base material fitting part of the side beam, and the surface material is rough-cut at the end part and fitted to the surface material fitting part of the side beam to speed up the construction and shorten the construction period. In addition, the surface material is finished to be fitted into the surface material fitting portion of the side beam, and a beautiful appearance is obtained. In addition, since only the surface material can be replaced independently of the tread base material, when remodeling the surface material, the old surface material is peeled off while the tread base material is left intact, and the new surface material is then affixed to the tread base material. All you need to do is finish the renovation work quickly and beautifully.

  According to the second invention, a nose member having a base portion and a cover portion that is removably assembled to the base portion is fixed to the front side end portion of the tread base material, and the rear side than the nose member is fixed. By attaching the surface material to the top surface of the tread base material, when replacing the surface material, the base portion of the nose member was fixed to the tread base material, and the cover material was removed from the base portion and the surface material was replaced. It only needs to be fitted again later, and it can be finished beautifully.

  According to the third invention, a straight staircase portion having a staircase structure having side girders in which the fitting portion of the surface material is formed shallower than the fitting portion of the staircase base material, and the surrounding staircase connected to the straight staircase portion The staircase around the staircase has a structure in which a tread with a surface material affixed to the top surface of the tread base material is placed on and fixed to the top surface of the side girders. Even with a staircase that combines a staircase with a surrounding staircase that is more difficult to construct, the construction can be performed quickly and the construction period can be shortened.

  According to the fourth invention, by providing the elastic material on the side surface on the base wall surface side of the staircase-type side girder of the surrounding staircase portion and the upper surface on which the treadle is placed, the soundproofing and sound insulating properties of the surrounding staircase portion can be improved. it can.

  According to 5th invention, as a construction method of stairs, after fixing a tread base material to the base material fitting part of a side beam, and sticking a surface material to a tread board base material, and making it into a surface material fitting part By fitting, the above staircase structure can be easily formed and the staircase can be constructed.

  According to the sixth invention, as a method of reforming the staircase, after removing the surface material of the tread from the tread base material and extracting it from the surface material fitting portion of the side beam, the new surface material is attached to the upper surface of the tread base material. Then, by fitting it into the surface material fitting part of the side girders, it is possible to renovate the stairs simply by peeling off the original surface material and newly attaching the surface material. Can do.

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 a cross-sectional view showing a fitting portion of a tread plate in a staircase structure of a straight staircase portion. FIG. 7 is an enlarged cross-sectional view of the tread board fitting groove. FIG. 8 is an enlarged cross-sectional view showing a tread with a nose member and a surface material attached to the tread base. FIG. 9 is a perspective view showing side girders around the stairs. FIG. 10 is a cross-sectional view showing the support portion of the tread board in the surrounding staircase section. FIG. 11 is a cross-sectional view showing a connection portion between the lower straight staircase portion and the surrounding staircase portion. FIG. 12 is a cross-sectional view showing a connection portion between the surrounding staircase portion and the upper straight staircase portion. FIG. 13 is a view corresponding to FIG. FIG. 14 is a diagram illustrating the soundproofing performance of the staircase structure of Example 1 and the comparative example. FIG. 15 is a diagram illustrating the soundproofing performance of the staircase structure of Example 1 and the comparative example. FIG. 16 is a view corresponding to FIG. 14 showing the soundproof performance of the staircase structure of Example 4 and the comparative example. FIG. 17 is a view corresponding to FIG. 15 illustrating the soundproof performance of the staircase structure of Example 4 and the comparative example.

  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 FIGS. 6 and 8, 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-recording 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.

  As shown in FIG. 6, the lengths L1 and L2 in the step width direction (left-right direction) of the tread base material 9 and the surface material 10 are different from each other, and the length L2 of the surface material 10 is the length of the tread base material 9. It is shorter than L1 by a predetermined dimension (for example, L1-L2 = 10 mm) (L2 <L1).

  Further, as shown in FIG. 8, the width of the tread 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 will be described later than the width of the tread base material 9. 16 is shortened by a width dimension (for example, 26 mm) of the base portion 17.

  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.

  As shown in FIGS. 5 to 7, each of the tread board fitting grooves 2 includes a base material fitting groove part 3 (base material fitting part) into which the left and right ends of the tread board base material 9 are fitted, and the left and right sides of the surface material 10. It consists of the groove | channel of the two-stage structure with the surface material fitting groove part 4 (surface material fitting part) by which an edge part is engage | inserted. Thus, each side beam 1 is provided with a base material fitting groove portion 3 into which the tread base material 9 of the tread plate 8 is fitted, and a surface material fitting groove portion 4 into which the surface material 10 is fitted.

  That is, as shown in FIG. 7, the groove depth d1 of the base material fitting groove portion 3 and the groove depth d2 of the surface material fitting groove portion 4 are the lengths L1 and L1 of the tread board base material 9 and the surface material 10, respectively. The groove depth d2 of the surface material fitting groove portion 4 (the fitting depth of the surface material 10 to the surface material fitting groove portion 4) is different depending on the difference of L2, and the groove depth of the base material fitting groove portion 3 is the same. It is shallower by a predetermined depth (d1−d2 = 5 mm) than d1 (the depth of fitting of the tread base material 9 to the base material fitting portion) (d2 <d1).

  Further, as shown in FIG. 5, the base material fitting groove portion 3 of each tread board fitting groove 2 has a lower groove side surface inclined rearward and the groove width becomes larger toward the rear side. When the tread base material 9 is fitted into the base material fitting groove 3, a gap is generated between the bottom rear end of the tread base material 9 and the lower groove side surface of the base material fitting groove 3. The tread base material 9 (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, respectively. The end portion is fitted to the base material fitting groove portion 3 of the tread plate fitting groove 2, and the end portion of the surface material 10 is fitted to the surface material fitting groove portion 4, and the tread plate 8 is fixed by the wedge in this state. 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. 8, a nose member 16 is fixed to a front end portion (step nose portion) of each tread board 8 so that a person who goes up and down the staircase S does not slide on the tread board 8. The surface material 10 is adhered to the upper surface of the tread base material 9 in the range of the rear side (back side) of the member 16. 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 nosing member 16 includes a base portion 17 that is directly fixed to the tread base material 9 and a cover portion 18 that is removably assembled to the base portion 17. The base portion 17 is integrally projected from a plate-like base portion main body 17a extending in the left-right direction and a rear end portion and a front end portion portion of the upper surface of the base portion main body 17a, and faces inward (opposite sides) at the upper end. And a rib plate-like protrusion 17b formed with two engaging portions 17c and 17c that are bent. The left and right length of the base portion main body 17a is the distance between the opposing surfaces of the left and right side girders 1 and 1 (the length of the tread base material 9 excluding the end portion fitted in the base material fitting groove 3 of the side girder 1). The width in the front-rear direction of the base portion main body 17a is the same as the difference in the width in the step depth direction (front-rear direction) between the tread base material 9 and the surface material 10 (for example, 26 mm). The base portion 17 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 portion 18 includes a cover portion main body 18a having an L-shaped cross section composed of an upper surface portion 18b and a front surface portion 18c bent at right angles, and the left and right length of the cover portion main body 18a is the base of the base portion 17. It is the same as the part main body 17a, and the width is larger than that of the base part main body 17a. On the upper surface (outer surface) of the upper surface portion 18b of the cover portion main body 18a, a plurality of anti-slip ridges 19, 19,. On the lower surface (inner surface) of the upper surface portion 18b of the cover portion main body 18a, two rib plate-shaped protrusion portions 18d and 18d having engaging claws 18e and 18e bent outward (on the opposite side) at the lower end are integrally formed. Is formed. A plate-like locking portion 18f bent rearward is integrally provided at the lower end of the front surface portion 18c so that the front surface portion 18c of the cover portion main body 18a is brought into contact with the front end surface of the tread base material 9. In this state, the locking portion 18f at the lower end is locked to the lower surface front end of the tread base material 9 and the protrusions 18d and 18d of the upper surface portion 18b are fitted between the protrusions 17b and 17b of the base portion 17 to be engaged. By engaging the claws 18e and 18e with the engaging portions 17c and 17c, the cover portion 18 is removably assembled to the base portion 17, and the rear surface of the top surface portion 18b of the cover portion 18 is attached to the surface material 10 of the tread plate 8. The front end is partially covered.

  The surrounding staircase portion S2 is provided so as to connect the upper and lower straight staircase portions S1 and S3. Unlike the straight staircase portions S1 and S3, the surrounding staircase portion S2 has, for example, a three-stage plate-shaped side girder 21, and the side girder 21 is provided with three steps tread plates 24-26 of a lower stage, a middle stage, and an upper stage. It is placed and fixed. That is, as shown in FIGS. 9 to 13, on the outer side in the rotation direction of the rotation staircase portion S <b> 2, a side formed by two upper and lower plate-like side girder members 22, 22 connected at right angles to each other. A girder 21 is arranged, and these side girder members 22 and 22 are fixed to the base wall surface W. A horizontal lower step board mounting portion 22a is placed on one side of the upper surface of each side girder member 22, and a horizontal upper step board mounting portion whose height is higher than the lower step board mounting portion 22a by a certain height on the other side. Each portion 22b is formed, and the two tread plate placement portions 22a and 22b are continuous by the vertical kick plate placement portion 22c. A part of the lower surface of each side girder member 22 is inclined so as to be directed upward from one side (lower tread plate mounting portion 22a side) toward the other side (upper tread plate mounting portion 22b side). The other end of the lower side beam member 22 and one end of the upper side beam member 22 are placed on the upper step plate mounting portion 22b of the lower side beam member 22 and the lower step plate mounting of the upper side beam member 22. The portion 22a is connected so as to have the same height. The outer end of the triangular lower step plate 24 is connected to the lower step plate mounting portion 22a of the lower side beam member 22 and the lower side beam member 22 is also lower. The upper end plate mounting portion 22b of the upper side girder member 22 and the lower step plate mounting portion 22a of the upper side girder member 22 are provided with the outer end of the substantially rhombic middle step tread plate 25, and the upper step plate mounting portion 22b of the upper side girder member 22 of the upper side girder member 22. The outer end portions of the triangular upper tread 26 are respectively placed and fixed.

  There are no side girders on the inner side in the rotational direction of the rotational staircase portion S2, and the inner end portions of the tread plates 24 to 26 are placed and fixed on a plurality of receiving materials (not shown) fixed to the base wall surface W. ing.

  Each of the treads 24 to 26 in the surrounding staircase portion S2 is composed of the tread base material 9 and the surface material 10 adhered to the upper surface thereof, similarly to the treads 8 of the straight staircase portions S1 and S3 ( Unlike the step board 8 of the straight staircase portions S1 and S3, the difference in length between the tread base material 9 and the surface material 10 will be described. No, they are the same length. Further, as shown in FIG. 13, a nose member 16 is fixed to the front end portion of the tread base material 9. The configuration of the nosing member 16 and the structure for fixing the nosing member 16 to the tread plates 24 to 26 are the same as those of the step plate 8 of the straight steps S1 and S3.

  A fitting groove 27 for fitting the upper end portion of the kick plate 28 is formed at the front lower end portion of each of the tread plates 24 to 26. The kick plate 28 is used to support the tread plates 24 to 26 with strength at the front end, and is made of a thicker plate material than the kick plates 13 of the straight steps S1 and S3. The fitting groove 27 is also a wide groove accordingly. The upper end portion of the kick plate 28 is fitted into the fitting groove 27 and a screw (not shown) is inserted and fixed from the upper surface of the tread plate 8 (the tread plate base material 9), while the lower end portion of the kick plate 28 is arranged at the lower stage. Are fixed to rear end portions of the step plates 24 and 25 (including the uppermost step plate 8 of the lower straight staircase portion S1), and right and left end portions of the kick plate 28 are fixed to the kick plate arrangement portion 22c of the side beam member 22. Thus, the tread plates 24 to 26 are fixed in a state where they are supported by the side girders 21 and the kick plates 13. Reference numeral 29 denotes a vibration isolating mat interposed between the fitting groove 27 and the upper end of the kick plate 28.

  Then, as shown in FIG. 10, the side surface on the base wall surface W side of the stage-type side girder 21 of the surrounding staircase portion S2, that is, the stage-type side girder 21 and the base wall surface W to which the side girder 21 is fixed. An elastic material 31 is provided between them. Further, in the side beam member 22 of the same side beam 21, the upper surfaces of the tread plate mounting portions 22a and 22b, that is, between the tread plate mounting portions 22a and 22b and the tread plates 24 to 26 (the tread base material 9). The same elastic material 32 is provided. As the elastic materials 31 and 32, for example, a vibration-proof sheet or sound insulation sheet made of a material such as asphalt, PVC, rubber, urethane foam or the like, a sheet-like material having an effect on vibration insulation and sound insulation such as a cushioning material made of a nonwoven fabric. Is used.

  Further, a parting material 33 (baseboard) is attached to a parting part between the stage-type side girder 21 and the step boards 24 to 26 in the surrounding staircase part S2.

  Next, the construction method of the said staircase S is demonstrated. In each of the straight staircase portions S1 and S3, a base material fitting groove portion 3 into which the tread board base material 9 is fitted, and a surface material fitting groove portion 4 into which the surface material 10 is fitted into the opposing surfaces of the left and right side girders 1, 1. Are formed with a plurality of step board fitting grooves 2, 2,..., And a plurality of kick plate fitting grooves 5, 5,. Fix to the ground wall W.

  Next, the left and right end portions of the tread base material 9 of each tread plate 8 are fitted into the base material fitting groove portions 3 in the respective tread plate fitting grooves 2 of the left and right side girders 1 and 1, and the tread base material 9 and the base material fit A wedge is driven into the gap between the lower groove side surface of the joint groove portion 3 and the tread base material 9 is fixed. 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 left and right end portions of the surface material 10 are set to the side. While being fitted into the surface material fitting groove 4 of the girder 1, the surface material 10 is pasted on the upper surface of the tread base material 9 with the front side being open.

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

  On the other hand, in the surrounding staircase portion S2, the two side beam members 22, 22 of the stage-shaped side beam 21 are connected to each other with the elastic material 31 interposed therebetween and fixed to the base wall surface W, and then the step plate is mounted. The outer end portions of the three tread plates 24 to 26 are placed on the placement portions 22a and 22b via the elastic member 32 and fixed with screws. Further, the inner end portions of the tread plates 24 to 26 are fixed to the receiving material on the base wall surface W. The upper end portion of the kick plate 28 is fitted into the fitting groove 27 at the front end portion of the lower surface of each of the tread plates 24 to 26, and screws (not shown) are inserted from the upper surface of the tread plates 24 to 26 (the tread plate base material 9) and fixed. Then, the lower end portion of the kick plate 27 is fixed to the rear end portions of the lower step plates 24 and 25 (including the uppermost step plate 8 of the lower straight stair portion S1). This fixes each tread board 24-26 in the state supported by the side beam 21, the receiving material, and the kick board 28. FIG. 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.

  Moreover, when renovating the staircase S constructed in this way, in the straight staircase portions S1 and S3, the surface material 10 of each tread plate 8 is peeled off from the tread plate base material 9 and the surface of the side spar 1 After extracting from the material fitting groove 4, a new surface material 10 may be attached to the upper surface of the tread base material 9 and then fitted into the surface material fitting groove 4 of the side beam 1 in the same manner as the above construction method.

  Therefore, in this embodiment, each tread 8 in the straight staircase portions S1 and S3 of the staircase S includes a tread base material 9 and a surface material 10 adhered to the upper surface thereof, and the length L2 of the surface material 10 Is shorter than the length L 1 of the tread base material 9, while the side girder 1 has a base material fitting groove portion 3 as a tread plate fitting groove 2 and a groove depth d 1 of the base material fitting groove portion 3. And a surface material fitting groove 4 having a shallow groove depth d2. Therefore, at the time of construction of the staircase S, the tread base material 9 and the surface material 10 of the tread 8 can be independently fitted and fixed to the side beam 1 (the base material fitting groove 3 and the surface material fit). When the groove depth with the joint groove portion 4 is the same as each other, the tread base material 9 and the surface material 10 are fitted together so that they cannot be fixed independently) The left and right ends of the tread base material 9 are fitted into the base material fitting groove 3 of the side beam 1 and fixed with wedges, and the right and left ends of the surface material 10 are fitted into the surface material fitting groove 4 after the fixing. What is necessary is just to rough-cut the end portion and only fit the surface material fitting groove portion 4 of the side beam 1 for the construction of the surface material 10. . Further, since the front end portion of the surface material 10 is covered by the cover portion 18 of the nosing member 16, the front end portion of the surface material 10 is also rough cut, and the construction is quickened.

  Further, since the surface material 10 is finished to be incorporated in the surface material fitting groove portion 4 of the side beam 1, a beautiful appearance can be obtained without using a parting member or the like.

  Since each tread 8 has a surface material 10 attached to the upper surface of a rigid tread base 9, a rigid tread 8 is fixed to the side beam 1 to ensure high safety. The

  Further, since each of the treads 8 has a surface material 10 attached to the upper surface of the tread base material 9, only the surface material 10 can be replaced independently of the tread base material 9, and the surface material 10 can be used for renovation. As described above, the tread base material 9 remains fitted in the base material fitting groove 3 of the side beam 1 and the old surface material 10 is peeled off from the tread base material 9 as described above. The end portion is extracted from the surface material fitting groove portion 4 of the side beam 1, and then a new surface material 10 is fitted into the surface material fitting groove portion 4 of the side beam 1 and attached to the upper surface of the original tread base material 9. That's fine. That is, by simply peeling off the original surface material 10 and newly attaching the surface material 10, the staircase S can be reformed, and the reform can be easily and quickly performed to obtain a beautiful finish.

  Further, a nose member 16 is fixed to the front end portion of the tread base material 9 in each tread plate 8, and the nose member 16 has two members of a base portion 17 and a cover portion 18, and the cover portion 18 is the base portion 17. Therefore, even when the surface material 10 is replaced, it is only necessary to remove the cover portion 18 and replace the surface material 10 and then fit the cover portion 18 again.

  The staircase S is a combination of the upper and lower straight staircase portions S1 and S3 and the surrounding staircase portion S2 connected to the straight staircase portions S1 and S3. Rather than having the staircase structure similar to the straight staircase portions S1 and S3, the stepped staircase portion S2, which is difficult compared to the portions S1 and S3 and difficult to construct, is not the staircase structure. Since the staircase structure is a stage type that is placed and fixed on the upper surface, the construction of the staircase S becomes faster and the construction period becomes shorter.

  Further, the tread plate mounting portions 22a and 22b and the tread plate 24 on which the tread plates 24 to 26 are placed between the staircase type side girder 21 and the base wall surface W of the surrounding staircase portion S2 and the side girder member 22 of the staircase type side girder 21. Since the elastic members 31 and 32 are respectively interposed between the elastic members 31 and, the elastic members 31 and 32 can improve the soundproofing and sound insulating properties in the surrounding staircase portion S2.

(Other embodiments)
In addition, in the said embodiment, although it is the structure which has fitted the edge part of each tread board 8 to the bottomed tread board fitting groove 2 of the both side girders 1 and 1 in straight stair part S1, S3, The present invention can also be applied to a structure in which the tread plate 8 penetrates the side beam 1. In that case, the side beam 1 is formed with a base material fitting portion for fitting the tread base material 9 in a penetrating state, and a bottomed surface material fitting groove portion 4 positioned above the base material fitting portion. The tread base material 9 may be fitted into the base material fitting portion in a penetrating manner, and the end portion of the surface material 10 may be fitted into the surface material fitting groove portion 4.

  Moreover, 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.

  Next, specific examples will be described. The following examples and comparative examples are actual building site staircases having a straight staircase portion and a surrounding staircase portion.

Example 1
As a staircase structure in a straight staircase portion, a base material fitting groove portion having a depth of 10 mm into which a tread board base material is fitted and a surface material fitting groove portion having a depth of 5 mm into which a surface material is fitted are provided on a side beam having a thickness of 21 mm. It was provided to be a step.

  The tread base material was fitted into the base mating groove portion of the side girders, and wedges were driven and fixed from the back side of the tread. Next, a 7.5 mm thick surface material composed of MDF base material, PVC mat, and nonwoven fabric is rough-cut and attached to the top surface of the tread base material so that the end is fitted into the surface material fitting groove of the side beam did. As a result, I was able to finish the staircase quickly and beautifully.

(Example 2)
The tread base material was fixed to the base material fitting groove of the side beam in the same manner as in Example 1. Subsequently, the base part of the nose member which is a molded body of hard PVC resin was fixed to the front end part (nosing part) of each tread base material. The surface material was rough-cut so that it could be placed adjacent to the rear side of the base portion, and the left and right end portions were attached to the upper surface of the tread base material so as to fit into the surface material fitting groove portion. Then, the cover part of the nose member which consists of hard PVC resin with which the four anti-slip protrusions which the soft PVC resin shape | molded was equipped on the upper surface was fitted in the base part, and was finished.

(Example 3)
In the staircase structure of Example 2, after removing the cover part of the nose member from the base part and peeling off the surface material from the tread base material, the new cover material is attached to the upper surface of the tread base material, and the original cover Finished by fitting the part into the base part.

Example 4
A rubber material having a thickness of 6 mm, a width of 30 mm, and a specific gravity of about 1.2 to 1.5 on the side surface of the base wall surface of the staircase side girder and the tread plate mounting portion on which the tread base material is placed, respectively An elastic material made of was attached, and the side girders of the template were fixed to the base wall surface. A tread was placed on an elastic material and fixed to the tread plate mounting portion of the side beam.

(Comparative example)
As a staircase structure in the straight staircase section, a fitting groove having a depth of 10 mm into which a tread base material is fitted is provided in a side beam having a thickness of 21 mm.

  A tread base material was fitted into the fitting groove, and wedges were driven and fixed from the back side of the tread. The surface material was measured and cut to fit the tread surface on the top surface of the tread base material, and was attached to the top surface of the tread base material. It took time and effort to cut the surface material.

  Also, without attaching elastic material to the side surface of the base wall side of the step-shaped side girder of the surrounding staircase and the step plate mounting part on which the tread base material is placed, the side girder of the template type is attached to the base wall surface. The treadle was directly placed on the treadle rest of the side girders and fixed.

(Evaluation of soundproof performance)
Moreover, about Example 1, Example 4, and the comparative example, the soundproof performance of the staircase was measured. In Example 1 and the comparative example, the sound when the impact ball is dropped freely from the sixth step on the first step to the fifth step plate from the bottom of the straight staircase portion in the downstairs room. It was measured. The results are shown in FIGS. While the N number of the comparative example was N-62, in Example 1, the N number was N-48, which was more effective than the comparative example.

  Moreover, in Example 4 and the comparative example, the sound when the impact ball is freely dropped from the third step on the first step to the second step plate from the bottom of the surrounding staircase portion is given downstairs. Measured in the room. The results are shown in FIGS. In the comparative example, the N number was N-62, whereas in Example 4, the N number was N-50, which was more effective than the comparative example.

  The present invention can shorten the construction period of the staircase and the renovation period, and can provide a beautiful appearance, so it is extremely useful and has high industrial applicability.

S Staircase S1 Lower straight staircase portion S2 Staircase portion S3 Upper straight staircase portion W Base wall surface 1 Side girder 2 Tread plate fitting groove 3 Base material fitting groove portion (base material fitting portion)
d1 Groove depth 4 Surface material fitting groove (surface material fitting portion)
d2 Groove depth 8 Tread plate 9 Tread base material L1 Length 10 Surface material L2 Length 13 Kick plate 16 Nose member 17 Base portion 18 Cover portion 21 Stair type side girder 22 Side girder member 22a Lower step tread plate mounting portion 22b Upper step tread plate Placement part 24 Lower step plate 25 Middle step plate 26 Upper step plate 28 Kick plate 31 Elastic material 32 Elastic material

Claims (6)

In a staircase structure in which a tread having a tread base material and a surface material attached to the upper surface of the tread base material is incorporated in a side beam,
The length of the surface material in the stairs width direction is shorter than the length of the tread base material,
The side girders are provided with a base material fitting part into which the tread board base material is fitted, and a surface material fitting part into which the surface material is fitted,
A step structure in which a fitting depth of the surface material to the surface material fitting portion is shallower than a fitting depth of the tread base material to the substrate fitting portion. In claim 1,
A nose member is fixed to the front side end of the tread base material,
Surface material is affixed to the upper surface of the tread base material behind the nosing member,
The stair nosing member includes a base portion that is directly fixed to the tread base material, and a cover portion that is removably assembled to the base portion. A straight staircase portion having the staircase structure according to claim 1 or 2,
A surrounding staircase connected to the straight staircase,
The turning staircase portion is characterized in that a tread having a tread base material and a surface material attached to the upper surface of the tread base material is mounted and fixed on the upper surface of the side beam of the template. Stairs to go. In claim 3,
An elastic material is provided between the step-type side girder of the surrounding staircase and the base wall surface on which the side girder is fixed, and between the step-plate mounting portion on which the step plate of the step-type side girder is placed and the step plate. Stairs characterized by being provided with. A method for constructing a staircase having the staircase structure according to claim 1 or 2,
A method for constructing a stair, characterized in that after a tread base material is fitted and fixed to a base material fitting portion of a side beam, a surface material is stuck to the tread base material and is fitted into the surface material fitting portion. A method for reforming a staircase having the staircase structure according to claim 1 or 2,
After peeling off the surface material of the tread board from the tread base material and pulling it out from the surface material fitting part of the side girders, a new surface material is stuck on the upper surface of the tread board base material and to the surface material fitting part of the side girders Stair remodeling method characterized by fitting.

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