JP2016216994A - Stairs-covering structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stairs-covering structure hardly causing even reduction in aesthetic appearance by preventing the occurrence of a swelling in the stairs-covering material by gathering steam and water discharged from concrete or mortar stairs between the stairs and the stairs-covering material.SOLUTION: A stairs-covering structure covers concrete or mortar stairs 1 of continuing a horizontal plane 1b and a step difference surface 1c via a stair-nosing 1a with a stairs-covering material 2. A ventilation-water communication layer 3 is provided between the horizontal plane 1b of the stairs 1 and the stairs-covering material 2, and an outside-turning discharge port 8 communicating with the ventilation-water communication layer 3 is formed between the left side end and/or the right side end of a stair-nosing part 2a of the stairs-covering material 2 and the stair-nosing 1a of the stairs 1. Since steam and water discharged from the stairs are discharged from the discharge port by passing through the ventilation-water communication layer, a swelling is not caused in the stairs-covering material. The discharged water flows down on the left side end and/or the right side end of the step difference surface of the stairs, and its flow-down trace is inconspicuous, so that reduction in aesthetic appearance is hardly caused.SELECTED DRAWING: Figure 1

Description

The present invention relates to a staircase covering structure in which a step made of concrete or mortar, in which a horizontal surface and a stepped surface are continuous via a nose, is covered with a staircase covering material. Related to the staircase covering structure.
Here, the “mortar-made staircase” refers to a staircase constructed using a tread board member or a floor board member formed by filling a mortar into a metal casing having an open upper surface.

  Rainwater and groundwater easily penetrate into concrete stairs and mortar stairs, and the infiltrated water is released as water vapor from the surface of the stairs, so the stairs are covered with a non-breathable synthetic resin stairs covering material. Then, there is a problem that water vapor accumulates between the staircase covering material and the stairs, and the staircase covering material is swollen.

  On the other hand, as a technique for preventing the covering of the synthetic resin covering sheet, for example, in the sheet waterproofing method, a synthetic resin waterproof sheet is stretched without using an adhesive on the concrete base, and the rising portion of the concrete base A deaeration opening is opened at the rising part of the waterproof sheet that rises along the cover, and the deaeration opening is covered with a deaeration sheet piece provided with a number of fine ventilation holes, and a presser plate having a plurality of ventilation holes By fixing the deaeration sheet piece and covering with a deaeration sheet from above, a method of preventing the expansion of the waterproof sheet by degassing water vapor and other volatile components released from the concrete substrate Known (Patent Document 1).

JP-A-6-221750

  In the construction method of Patent Document 1, water vapor and other volatile components that volatilize from the concrete base are discharged to the outside from the deaeration port at the rising portion of the waterproof sheet, so that the volatile components accumulate between the concrete base and the waterproof sheet. It is possible to prevent swelling of the waterproof sheet.

  However, if a deaeration port is formed at the rising portion of the waterproof sheet as in the method of Patent Document 1, for example, water that oozes from the surface of the concrete base or water that is liquefied from water vapor due to a temperature drop is degassed. There is a problem that the waterproof sheet swells due to accumulation between the concrete base and the waterproof sheet without being discharged from the mouth.

  Moreover, since the rain vent etc. may infiltrate from a deaeration port when the deaeration port is formed in the rising part of a waterproof sheet like the construction method of patent document 1, a deaeration port is a fine ventilation hole. Is covered with a large number of deaeration sheet pieces, and the deaeration sheet piece is fixed with a presser plate having a plurality of vent holes, and then covered with a deaeration sheet to prevent water from entering. There is also a problem that the coating treatment for waterproofing the deaeration port is troublesome and various coating parts must be used.

The present invention has been made under the above circumstances, and the problem to be solved is that water vapor or water released from the surface of a concrete or mortar staircase is between the staircase covering material that covers the staircase. Because it is discharged outside from the discharge port so that it does not collect in the air, it is possible to prevent the stair covering material from being swollen, and it is not necessary to perform a troublesome waterproof coating treatment on the discharge port, so that workability is improved. It is also desirable to provide a staircase covering structure that is less noticeable even if traces of water discharged from the discharge port are formed on the stepped surface of the staircase, so that there is less concern about aesthetic loss.
In a preferred embodiment, the flow trace of water discharged from the discharge port is further unnoticeable to prevent a decrease in aesthetics, and the discharge port can be easily formed to further improve the workability. Another problem to be solved is to prevent water from entering between the horizontal surface of the staircase and the staircase covering material from the discharge port.

In order to solve the above problems, a staircase covering structure according to the present invention is a staircase covering structure in which a staircase made of concrete or mortar, in which a horizontal surface and a stepped surface are continuous through a nose, is covered with a staircase covering material. A ventilation water-permeable layer is provided between the horizontal surface of the staircase and the staircase covering material, and between the left end or / and the right end of the staircase nose portion of the staircase covering material and the stair nosing of the staircase, An outward-facing discharge port communicating with the ventilating water-permeable layer is formed.
Here, the “staircase” means a landing that is provided in the middle, a floor that is connected to the upper end or the lower end, and the like.

In the staircase covering structure of the present invention, it is desirable that the outward-facing outlet is formed on the left side and / or on the right side.
The outer discharge port seals the periphery of the staircase covering material, while the left end or / and the right end of the staircase portion of the staircase cover material is not sealed between the staircase nose. It is desirable to be formed by doing.
Moreover, it is desirable that the outward-facing discharge port is formed below the ventilating water layer.

  According to the staircase covering structure of the present invention, water vapor or water released from the horizontal surface of a concrete or mortar staircase penetrates into the ventilated water layer and moves through the ventilated water layer. It is discharged from the outward-facing outlet that communicates with. Therefore, since water vapor and water do not accumulate between the stairs and the stair covering material, it is possible to prevent the stair covering material from being swollen by the pressure of the water vapor or water.

  By the way, if the discharge port is formed below the middle part excluding the left and right side ends of the staircase covering material, the water discharged from the discharge port is the step surface of the staircase (the step surface excluding the left and right side ends). ) If the discharged water contains concrete lye or rust water, the flow marks may remain on the step surface of the staircase, which may impair the appearance of the staircase. However, as in the case of the staircase covering structure of the present invention, if an outward-facing outlet is formed between the left end or / and the right end of the staircase portion of the staircase covering material and the stair nosing, the discharged water is discharged. However, since it flows down the left end part and / or the right end part of the stepped surface of the staircase, even if the downflow mark is formed, it becomes inconspicuous and the appearance is less impaired.

  In particular, in the staircase covering structure in which the outward-facing discharge port is formed on the left side or / and the right side between the left end or / and the right end of the stair nosing part of the staircase covering material and the stair nosing, the discharge port When water is discharged from the left and / or right direction and there is a side wall on the left or / and right side of the staircase, the water discharged from the discharge port is removed from the stair covering material and the left side wall or / and right side of the staircase. Since the left end or / and the right end of the stepped surface of the staircase flows down using a slight gap with the wall as a flow path, the flow marks are less noticeable and the appearance is hardly deteriorated.

  Further, the staircase covering structure of the present invention has good workability because it does not perform a waterproof coating treatment on the discharge port, and in particular, the outward drainage port seals the periphery of the staircase covering material, while the staircase The staircase covering structure formed by unsealing between the left end or / and the right end of the stair nosing part of the covering material and the stair nosing is very easy to form the discharge port, and has a special discharge. Since there is no need to attach a member or the like for forming the outlet, the workability is greatly improved, which is economically advantageous.

  Furthermore, the staircase covering structure in which the outward-facing discharge port is located below the ventilated water layer is such that even if water flows from the discharge port into the space connected to the ventilated water layer, the water is upward. There is no worry that it will flow into the ventilation water layer.

It is a front view which shows the staircase covering structure which concerns on one Embodiment of this invention. It is sectional drawing along the AA line of FIG. It is sectional drawing along the BB line of FIG. It is a principal part expansion perspective view of the staircase covering structure. It is a principal part expanded side view of the staircase covering structure. It is a principal part expanded side view of the staircase covering structure which concerns on other embodiment of this invention. (A) is a perspective view showing an inverted L-shaped staircase covering material used in the staircase covering structure of the present invention, and (b) is a back side of the stair nosing part of this staircase covering material, leaving both side ends. It is a perspective view which shows the place adhering to substantially rod shape. It is a top view of the staircase covering structure which concerns on other embodiment of this invention, Comprising: The ventilation water-permeable layer and covering material which were laid in the landing in the middle of a staircase are partially broken and shown. It is a front view of the staircase covering structure. It is sectional drawing along CC line of FIG. It is a front view of the staircase covering structure concerning other embodiments of the present invention. It is sectional drawing along the DD line of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1 is a front view showing a staircase covering structure according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is a cross-sectional view taken along line BB in FIG. 4 is an enlarged perspective view of the main part of the staircase covering structure, FIG. 5 is an enlarged side view of the main part of the staircase covering structure, and FIG. 7A is a perspective view showing the staircase covering material used in the staircase covering structure upside down. It is.

  The staircase covering structure of the embodiment shown in FIGS. 1 to 5 is obtained by covering a concrete staircase 1 provided in an apartment house or a building with a staircase covering material 2 that is bent into a substantially L shape, In each step of the concrete staircase 1, a horizontal surface 1b and a step surface 1c are continuous via a nose 1a, and a horizontal surface 1b of each step and a step surface 1c of the upper step are also continuous.

As shown in FIG. 2 and FIG. 3, the top of the horizontal surface 1b, the nose 1a and the step surface 1c of each step of the staircase 1 is covered with a staircase covering material 2 made of a synthetic resin that is bent into a substantially L shape. A ventilation water-permeable layer 3 is provided between each horizontal surface 1 b of 1 and the horizontal portion 2 a of each staircase covering material 2. The ventilation water-permeable layer 3 is bonded to the horizontal surface 1b with an adhesive (not shown) with an inner side (rear side) of about 5 to 25 mm (about 10 mm in this embodiment) from the front end of the horizontal surface 1b of the staircase. . This adhesive is applied so that a large number of adhesive ridges are formed at intervals with each other using a comb-shaped iron, and water vapor or water released from the horizontal surface 1b of the concrete staircase 1 is used as the adhesive. It is desirable to make it easy to enter the ventilating water-permeable layer 3 from between the ridges.
As described above, when the ventilated water-permeable layer 3 is bonded to the front end of the horizontal surface 1b of the staircase by about 5 to 25 mm, the stair nosing 1a is repaired and adjusted by the filler 5 described later. If the stair nosing portion 2a is not formed linearly or if there is a partial defect in the stair nosing 1a, the stair covering portion 2a of the stair covering material 2 can be reinforced by the filler 5.

  The horizontal portion 2b of the staircase covering material 2 that is bent into a substantially L shape is bonded to the upper surface of the ventilation water-permeable layer 3 with an adhesive (not shown), and the front hanging portion 2c of the staircase covering material 2 is a double-sided adhesive on the back surface thereof. The tape 4 is attached to the upper part of the step surface 1c of the stairs. Of course, the front sagging portion 2c may be adhered to the stepped surface 1c with an adhesive, but when it is pasted with the double-sided adhesive tape 4 as described above, the initial sticking strength of the front sagging portion 2c to the stepped surface 1c is improved, and the front sagging portion 2c. There exists an advantage which can prevent the curvature and peeling of the part 2c.

Further, as shown in FIG. 1, when side walls 1d and 1d exist on both the left and right sides of the staircase 1, the ventilation water-permeable layer 3 is about 10 to 25 mm from the left and right ends of the horizontal surface 1b of the staircase (15 mm in this embodiment). About) It is desirable to adhere to the inner side and cover with the staircase covering material 2 having the same width dimension as the ventilation water-permeable layer 3 from above. In this way, a gap of about 10 to 25 mm is generated between the left and right side edges of the staircase covering material 2 and the side walls 1d and 1d, so that the left and right side edges of the horizontal portion 2b of the staircase covering material 2 are sealed (described later). It is possible to easily and surely seal both the left and right ends of the front hanging portion 2c from the drainage ports 8 and 8 (described later) formed at the left and right ends of the nose portion 2c. There is no worry that the drainage of water is hindered by the side walls 1d and 1d.
Similarly, the vent water-permeable layer 3 is bonded to the rear surface of the horizontal surface 1b of the staircase about 10 to 25 mm, and the rear surface of the horizontal portion 2b of the staircase covering material 2 adhered thereon and the step surface of the staircase 1 It is desirable to form a gap of about 10 to 25 mm between 1c and 1c so that the rear end of the horizontal portion 2b of the step covering material 2 can be easily and reliably sealed.

  A stair nosing portion 2a of the staircase covering material 2 (referring to a portion extending from the front end edge of the horizontal portion 2b to the upper end edge of the front hanging portion 2c through the bent portion, and the same shall apply hereinafter) As shown in FIG. 2, a filler 5 is filled between the front edge of the horizontal plane 1b and the portion extending from the front edge of the horizontal plane 1b to the upper edge of the stepped surface 1c through the corner. The filling material 5 has a role of repairing and adjusting the stair nosing 1a when the stair nosing 1a is not formed straight across the entire length in the width direction, or a defect is present in the middle. The nose part 2a of the covering material 2 is supported from the back surface and serves to reinforce the nose part 2a so that the nose part 2a is not deformed or damaged by the stepping pressure when the stairs are raised or lowered. 3 is about 5 to 25 mm from the front end of the horizontal surface 1b of the staircase, and is attached to the horizontal surface 1b with the rear side thereof being kept behind. Since the gap can be filled, the above-mentioned role can be sufficiently achieved.

  As shown in FIGS. 1, 3, and 4, the filler 3 has a staircase covering about 20 to 100 mm (about 50 mm in this embodiment) from both left and right ends of the stair nosing portion 2 a of the staircase covering material 2. The gap between the nose portion 2a of the material 2 and the stair nosing 1a is filled, so that there is a width of 20 between the left and right ends of the stair nosing portion 2a of the stair covering material 2 and the stair nosing 1a. Gaps 7 and 7 of about ˜100 mm (about 50 mm in this embodiment) are formed.

And as shown in FIGS. 1-3, while sealing between the circumference | surroundings of the staircase covering material 2, and the horizontal surface 1a of the staircase 1 and the level | step difference surface 1c with the sealing material 6, FIG.1, FIG.4, FIG.5 shows. As shown, the gaps between the left and right ends of the stair nosing portion 2a of the staircase covering material 2 and the stair nosing 1a of the staircase 1 are partially unsealed, so that the outward discharge ports 8, 8 are directed to the left side. The discharge port 8 and the right-side discharge port 8 are formed at the left and right ends of the nose portion 2a. The discharge ports 8 are connected to the ventilating water layer 3 through the gaps 7 and 7.
As described above, when the discharge ports 8 and 8 are formed by unsealing the gap between the left and right ends of the stair nosing portion 2a of the staircase covering material 2 and the stair nosing 1a, the forming operation of the discharge ports 8 and 8 is performed. Since it is extremely simple and it is not necessary to attach a member for forming a special discharge port, the workability is greatly improved, which is economically advantageous.

As shown in FIGS. 4 and 5, the discharge port 8 facing leftward in this embodiment includes the left end of the lower part of the stair nosing part 2 a of the staircase covering material 2 (in other words, the upper edge of the front drooping part 2 c) and the staircase 1. The gap between the lower nose 1a (in other words, the upper edge of the stepped surface 1c) is opened without being sealed with the sealing material 6, so that it is positioned below the ventilation layer 3. Yes. Similarly, the right-facing discharge port 8 (see FIG. 1) does not seal the gap between the lower right end of the nose portion 2 a of the staircase covering material 2 and the lower portion of the staircase 1 a of the staircase 1 with the sealing material 6. By opening, it is formed below the ventilation water-permeable layer 3.
As described above, when the discharge ports 8 and 8 are formed at the lower left and right ends of the stair nosing portion 2a of the staircase covering material 2 below the vent water-permeable layer 3, water is vented from the discharge port 8. Even if it flows into the gap 7 connected to the water-permeable layer 3, there is no fear that the water that has flowed in flows upward and penetrates into the air-permeable layer.

The discharge port 8 may be formed so as to be at the same height as the ventilating water layer 3 with only the gap between the side edge of the horizontal portion 2b of the staircase covering material 2 and the horizontal surface 1b of the staircase 1 being unsealed. Good. In that case, all or a part of the gap between the side edges of the horizontal portion 2b may be unsealed, but if the whole is unsealed, the stair covering material 2 is likely to be peeled off. For example, a part of the gap near the front end of the side end of the horizontal portion 2b is preferably unsealed. If this measure is taken, the water vapor discharged from the horizontal surface 1b of the staircase 1 can be discharged reliably, so that it is possible to reach a part of the intended purpose, but it is preferable for the water discharged from the horizontal surface 1b. Since there is a possibility that the water will flow backward from the side 8 to the ventilation layer 3 and that rainwater cannot be completely eliminated from flowing into the ventilation layer 3, as described above, the outlet 8 is provided in the ventilation layer. More preferably, it is located below 3.
In addition, as shown in FIG. 6, the entire gap between the side end of the stair nosing portion 2a of the staircase covering material 2 and the stair nosing 1a of the staircase 1 is unsealed, and the upper portion of the discharge port 8 that is bent into a bowl shape is ventilated. You may form so that it may become the same height position as the water layer 3, and the lower part may be located below the ventilation water-permeable layer 3. FIG.
Further, it is not always necessary to seal the sealing material 6 between the left and right side ends below the discharge port 8 of the front hanging portion 2 c and the stepped surface 1 c of the staircase 1.

  The staircase covering material 2 used in this staircase covering structure is formed by bending the front edge of a single-layer sheet or a multi-layer sheet made of a thermoplastic synthetic resin such as a soft or semi-rigid vinyl chloride resin or an olefin resin downward by approximately 90 °. 2 and 3, it has a substantially L-shaped cross section in which the horizontal portion 2b, the nose portion 2a and the front hanging portion 2c are integrally formed, and in particular, from the front end of the horizontal portion 2. By providing a band-like phosphorescent region (shown in the figure) parallel to the nose portion 2a on the entire upper surface and / or the front drooping portion 2c, the step nose portion 2a of the staircase covering material 2 can be recognized and stepped off in the dark. It is preferable to use one that can be moved up and down safely without being damaged, or one in which the thickness of the nose portion 2a is increased so that the nose portion 2a is not worn out or damaged at an early stage.

As shown in FIG. 7 (a), a double-sided adhesive tape is used on the back surface of the lower part of the front hanging part 2c of the staircase covering material 2 to increase the initial sticking strength of the front hanging part 2c to the step surface 1c of the staircase 1. 4 is pasted in advance over the entire width of the front hanging portion 2c. As this double-sided adhesive tape 4, for example, a synthetic resin belt-like foam (thickness of about 1.0 to 5.5 mm, width of about 10 to 25 mm) such as polyethylene foam is used as a base material, and acrylic on both sides What apply | coated adhesives, such as an adhesive, is used preferably.
In addition, when adhering the front drooping part 2c of the staircase covering material 2 to the stepped surface 1c of the staircase 1 with an adhesive, the double-sided adhesive tape 4 is unnecessary.

Further, as the ventilation water-permeable layer 3 provided between the horizontal portion 2b of the staircase covering material 2 and the horizontal surface 1b of the staircase 1, water vapor or water released from the horizontal surface 1b of the staircase 1 is absorbed, Any synthetic resin fiber nonwoven fabric, continuous foam resin sheet, synthetic resin net, etc. that can move water vapor and water in a plane can be used. The non-woven fabric is preferably used. In particular, polyester resin fiber nonwoven fabrics and polypropylene resin fiber nonwoven fabrics having a measured thickness of 0.5 to 3 mm and a measured basis weight of 200 to 300 g / m ² are excellent in air permeability and are urethane resin one-component type or epoxy. The resin-based two-component floor adhesive is excellent in adhesiveness and has a long sticking time and good handleability (workability), so that it is extremely preferably used.

  As an adhesive for adhering the ventilation water-permeable layer 3 to the horizontal surface 1b of the staircase 1 and adhering the horizontal portion 2b of the staircase covering material 2 thereon, the urethane resin-based one-component type or the epoxy resin-based two-component type is used. Water-resistant floor adhesives are preferably used, and acrylic, modified silicone and rubber floor adhesives are also used. The ventilation water-permeable layer 3 does not necessarily have to be bonded with an adhesive, and even if not bonded, the ventilation water-permeable layer 3 is sandwiched between the horizontal surface 1b of the staircase 1 and the horizontal portion 2b of the staircase covering material 2, And since it is surrounded from the four sides by the sealing material 6 and the filler 5, there will be no positional shift, but there is a concern that the adhesive strength of the horizontal portion 2b of the stair covering material 2 will be greatly reduced and peeled off, It is desirable to adhere as in this embodiment.

  Moreover, as the filler 5 with which the gap between the stair nosing part 2a of the staircase covering material 2 and the stair nosing 1a of the staircase 1 is filled, for example, a urethane resin filling adhesive or the like is preferably used. And as sealing material 6 which seals the circumference | surroundings of the staircase covering material 2, sealing materials, such as urethane type, an epoxy type, a modified silicone type, a silicon type, a polysulfide type, an acrylic type, SBR type, a butyl rubber type, are used, Among these, the urethane-based sealing material is particularly preferably used from the viewpoint that it is difficult to drip immediately after being placed on the lower end surface of the front hanging portion 2c of the staircase covering material 2, is versatile, and is easy to handle. The sealing material 6 is a triangular seal as shown in FIGS. 1 to 4, that is, a triangular seal in which a sealing material is placed so that the cross-sectional shape is a right triangle, thereby sealing the periphery of the staircase covering material 2. It is preferable to stop.

The staircase covering structure of this embodiment can be easily and easily constructed in the following manner.
First, the floor adhesive is applied to the horizontal surface 1b of the staircase 1 with a comb iron, and the ventilation layer 3 is about 5 to 25 mm (about 10 mm in the embodiment) from the front end of the horizontal surface 1b. Then, about 10 to 25 mm from the rear end (about 15 mm in the embodiment), the inner surface is bonded to the horizontal surface 1b while being kept on the inside, and the floor adhesive is further applied to the upper surface of the ventilating water-permeable layer 3 with a comb-shaped iron.
Next, as shown in FIG. 7 (b), the filler 5 is placed on the back side of the nose portion 2a of the staircase covering material 2, and about 20 to 100 mm (about 50 mm in the embodiment) from the left and right ends of the nose portion 2a. Adhering to the upper surface of the ventilating water-permeable layer 3 while adhering the front hanging part 2c to the stepped surface 1c of the staircase 1 with a double-sided adhesive tape 4 By filling the material 5 between the stair nosing part 2a of the staircase covering material 2 and the stair nosing part 1a of the staircase 1, the width between the left and right ends of the stair nosing part 2a of the stair covering material 2 and the stair nosing part 1a is increased. The gaps 7 and 7 having a size of about 20 to 100 mm (about 50 mm in the embodiment) are formed.
And while sealing the circumference | surroundings of the staircase covering material 2 and the horizontal surface 1a and the level | step difference surface 1c of the staircase 1 with the said sealing material 6 (triangular seal), on the left and right both ends of the nose part 2a of the staircase covering material 2 By partially unsealing the gap between the stair 1 and the nose 1a, the left-side discharge port 8 and the right-side discharge port 8 connected to the ventilating water layer 3 through the gap 7 are connected to the left and right sides of the nose 2a. When formed on both side ends, a staircase covering structure is completed.

  In the staircase covering structure having the above-described structure, water vapor or water released from the horizontal surface 1b of the concrete staircase 1 permeates the air-permeable layer 3 and moves through the air-permeable layer 3. The water is discharged from a left-side discharge port 8 and a right-side discharge port 8 connected to the water layer 3. Therefore, since water vapor and water do not accumulate between the horizontal surface 1b of the staircase 1 and the horizontal portion 2b of the staircase covering material 2, it is possible to prevent the stair covering material 2 from being swollen by the pressure of water vapor or water.

  Further, since the left-side discharge port 8 and the right-side discharge port 8 are formed between the left and right ends of the stair nosing portion 2a of the staircase covering material 2 and the stair nosing 1a of the staircase 1, these discharge ports 8 8, the water W discharged leftward and rightward as shown in FIG. 1 is a staircase 1 with a slight gap 1e, 1e between the stair covering material 2 and the left and right side walls 1d, 1d of the staircase 1 as a flow path. Will flow down the left and right ends of the step surface 1c. Therefore, even if the discharged water W contains concrete lye, rust water, etc., and the flow marks are formed on the left and right side edges of the step surface 1c, the flow marks formed on the left and right side edges are inconspicuous. Therefore, there is almost no decrease in aesthetics.

In the staircase covering structure of the above embodiment, the two discharge ports 8 and 8 are formed at the left and right ends of the nose portion 2a of the staircase covering material 2, but one discharge port is provided at either the left or right end of the nose portion 2a. 8 may be formed. In other words, an outward-facing (left-side or / and right-side) discharge port communicating with the ventilating water-permeable layer 3 may be formed at the left end and / or right end of the stair nosing portion 2a of the staircase covering material 2.
In some cases, a part of the left side, right side, and rear side of the horizontal portion 2b of the staircase covering material 2 is not sealed, and a left side discharge port, a right side discharge port, or a rear side discharge is left. An outlet may be formed.

  FIG. 8 is a plan view of a staircase covering structure according to another embodiment of the present invention, in which a ventilation water layer and a covering material laid on a landing in the middle of a staircase are partially broken, FIG. 9 is a front view of the staircase covering structure, and FIG. 10 is a cross-sectional view taken along the line CC of FIG.

  This embodiment shows the covering structure of the staircase 1 having the landing 10 in the middle. As shown in FIG. 8, the surface (upper surface) of the concrete landing 10 provided in the middle of the staircase 1 is shown. The vent water-permeable layer 3 except for the peripheral edge thereof is bonded with the adhesive (not shown) applied using a comb iron, and the upper surface of the vent water-permeable layer 3 is The staircase covering material 2 bent in the substantially L shape and the flat covering material 20 are bonded with an adhesive (not shown).

As shown in FIG. 8, most of the landing 10 is covered with a flat covering material 20, and a corner portion facing the step 1 on the lower side of the covering material 20 is cut into a horizontally long rectangle. The cut corners are supplemented with a substantially L-shaped stair covering material 2 and are flattened with the flat portion 2b of the substantially L-shaped stair covering material 2 by a resin welded portion 11 as shown in FIGS. The covering material 20 is joined and integrated in an airtight or watertight manner.
The flat covering material 20 is a single-layer or multi-layer covering material made of a soft or semi-rigid vinyl chloride resin or olefin resin, similar to the substantially L-shaped staircase covering material 2. A material having substantially the same thickness as that of the staircase covering material 2 is used so that no step is generated at the joint portion.

  A part of the upper surface of the landing 10 (the portion facing the lower staircase 1) is covered with a horizontal portion 2b of the staircase covering material 2 bonded to the ventilation layer 3 as shown in FIG. A front hanging portion 2 c of the step covering material 2 is attached to the upper portion of the step surface 1 c connected to the lower step 1 by the double-sided adhesive tape 4. In the gap between the stair nosing part 2a of the staircase covering material 2 and the corner 10a (corresponding to the stair nosing of the staircase) that extends from the top surface of the landing 10 to the step surface 1b, the filler 5 is located on both the left and right sides of the nose part 2a. It is filled with about 20 to 100 mm from the end, and as a result, as shown in FIGS. 8 and 9, on the back side of the left and right side end portions of the nose portion 2 a of the stair covering material 2, it is continuous with the ventilation water-permeable layer 3. Gaps 7 and 7 having a width of about 20 to 100 mm are formed.

  As shown in FIGS. 8 and 10, the above-described sealing is provided between the periphery of the flat covering material 2 to which the substantially L-shaped step covering material 2 is joined and integrated, and the upper surface of the landing 10 and the step surface 1 b. On the other hand, as shown in FIG. 9, the gap between the left and right ends of the stair nosing part 2a of the stair covering material 2 and the corner 10a of the landing 10 corresponding to the stair nosing is partially unsealed. Thus, a left-facing discharge port 8 and a right-facing discharge port 8 are formed at the left and right ends of the stair nosing portion 2a of the stair covering material 2, and these discharge ports 8, 8 are formed in the gap portion 7, 7 is connected to the ventilation layer 3.

  In addition, since the covering structure of each step of the staircase 1 connected to the upper side and the lower side from the landing 10 is the same as the staircase covering structure shown in FIGS. 1 to 6 described above, the covering structure of the staircase 1 in FIGS. Is omitted, and redundant description is omitted in the specification.

  In the covering structure of the staircase 1 having the landing 10 as described above, water vapor or water released from the upper surface of the concrete landing 10 permeates the aeration layer 3 and moves inside thereof to move the stair covering material 2. It is discharged from the discharge ports 8 and 8 at both the left and right ends of the nose portion 2a. Therefore, since water vapor and water do not accumulate between the upper surface of the landing 10 and the staircase covering material 2 and the flat covering material 20, the stair covering material 2 and the flat covering material 20 are swollen by the pressure of water vapor and water. Can be prevented. And the water discharged from the discharge ports 8, 8 flows down the left and right ends of the step surface 1c, and even if the flow marks are formed on the left and right ends of the step surface 1c, it is not noticeable. It rarely occurs.

  FIG. 11 is a front view of a staircase covering structure according to still another embodiment of the present invention, and FIG. 12 is a cross-sectional view taken along the line C-C of FIG. 11. This embodiment is a staircase covering structure made of mortar. Is shown.

  As shown in FIG. 12, the stairs 1 made of mortar uses a tread board member 1h formed by filling a metal casing 1f having an open upper surface with mortar 1g. The frame material 1i, 1i is constructed by horizontally mounting a plurality of step board materials 1h with steps, and the upper surface of the step board member 1h (corresponding to the horizontal surface 1b of the staircase) The water-permeable layer 3 is bonded with the above-mentioned adhesive (not shown) with an inner side of about 5 to 25 mm from the front end and about 10 to 25 mm from the rear end and both left and right ends. And the horizontal part 2b of the said substantially L-shaped stair covering material 2 is adhere | attached on the upper surface of this ventilation water-permeable layer 3, The front drooping part 2c of this stair covering material 2 is the said double-sided adhesive tape 4. It is stuck on the front surface (corresponding to the step surface 1c of the staircase) of the step board member 1h.

  As shown in FIGS. 11 and 12, the filler 5 is provided between the nosing portion 2 a of the staircase covering material 2 and a corner (corresponding to the stair nosing 1 a of the staircase) that extends from the upper surface of the step board member 1 h to the front surface. Is filled with about 20 to 100 mm from both the left and right ends of the nose portion 2 a, whereby the gap portions 7 and 7 having a width of about 20 to 100 mm connected to the ventilating water-permeable layer 3 are formed into the nose portion of the staircase covering material 2. It is formed on the back side of both left and right end portions of 2a. The gap between the periphery of the stair covering material 2 and the step board member 1h is sealed with the sealing material 6, while the gap between the left and right sides of the nose portion 2a of the stair covering material 2 and the step board member 1h is not sealed. By being stopped, a left-side discharge port 8 and a right-side discharge port 8 that are connected to the ventilating water-permeable layer 3 through the gaps 7 and 7 are formed at both left and right ends of the nose portion 2a.

  Also in such a staircase covering structure, water vapor or water released from the mortar 1g of the tread member 1h penetrates into the ventilating water-permeable layer 3, moves inside thereof, and is formed at the left and right ends of the stair nosing part 2a of the staircase covering material 2. Since it discharges | emits from the discharge ports 8 and 8, it can prevent that water vapor | steam and water accumulate between the mortar 1g of the step board member 1h, and the staircase covering material 2, and a staircase covering material 2 arises. And the water discharged | emitted from the discharge ports 8 and 8 flows down the right-and-left both ends of the front surface of the tread member 1h corresponding to the level | step difference surface 1c of a staircase, and the flow traces form in the right-and-left both ends of the front surface of the tread plate member 1a. Even if it is done, it does not stand out, so there is almost no loss of aesthetics.

DESCRIPTION OF SYMBOLS 1 Stair 1a Stair nosing 1b Stair horizontal 1c Stair step 1g Mortar 1h Step board member 10 Stairway landing 2 Stair covering 2a Stair covering nose 2b Stair covering horizontal 2c Stair covering front Part 20 Covering material 3 Ventilating water-permeable layer 4 Double-sided adhesive tape 5 Filler 6 Sealing material 7 Cavity 8 Ejection port

Claims (4)

A staircase covering structure in which a staircase made of concrete or mortar, in which a horizontal surface and a stepped surface continue through a nose, is covered with a staircase covering material,
There is a ventilation layer between the horizontal surface of the stairs and the staircase covering material,
Between the left end or / and the right end of the stair nosing part of the staircase covering material and the stair nosing of the staircase, an outward discharge port communicating with the ventilating water layer is formed, Staircase covering structure.   The staircase covering structure according to claim 1, wherein the outward-facing discharge port is formed leftward or / and rightward.   The outward discharge port seals the periphery of the staircase covering material, while the left end or / and the right end of the staircase portion of the staircase covering material is not sealed between the staircase nose. The step covering structure according to claim 1, wherein the step covering structure is formed by:   The staircase covering structure according to any one of claims 1 to 3, wherein the outward-facing discharge port is formed below the ventilation water-permeable layer.

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