JP4920960B2 - Wooden floor structure and construction method of wooden floor - Google Patents

Description

  The present invention relates to a wooden floor structure and a wooden floor construction method that are employed in general houses, apartment houses, and the like, and are preferably used when renovating a tatami floor to a wooden floor.

  As the structure of the tatami floor used in general houses and apartment houses, for example, tatami is laid on a concrete slab (foundation foundation), or a rough board is constructed on the concrete slab via floor joists, Many tatami mats are laid on the rough plate.

  When a tatami floor with tatami mats directly pasted on a concrete slab is converted to a wooden floor, usually after removing the tatami mat, a raised plate made of synthetic resin foam is laid on the concrete slam, and the raised plate is placed on the raised plate. The wooden flooring is spread through the flooring support plate such as plywood.

In addition, when refurbishing a tatami floor installed on a rough board to a wooden floor, for example, as shown in Patent Documents 1 and 2, after removing the tatami, leave the rough board and the like on the rough board. It is customary to spread a wooden flooring through the above-described raising plate and flooring support plate.
Japanese Patent No. 3484437 JP 2002-88961 A

  However, the floor material support plates employed in the conventional wooden floor structures shown in Patent Documents 1 and 2 are relatively rigid boards such as plywood and medium fiber boards so that the wooden floor materials can be sufficiently supported. It is constituted by. For this reason, when cutting this high-rigidity floor support plate at the site, it is necessary to cut it with a saw, etc., which not only makes the cutting work difficult, but also swarf is scattered during cutting. Then, there is a risk of contaminating the surrounding area.

  In addition, when performing floor construction, even when using a precut construction method in which components such as a flooring support plate are preliminarily cut into predetermined dimensions on the factory side, and the precut material is carried to the site for construction. Since the floor material support plate is to be installed without gaps in the floor construction area, it is necessary to perform a cutting process in order to make fine adjustments at the site. For this reason, even when the pre-cut method is used, it is difficult to fundamentally solve the problem that cutting is generated with a saw on site and that chips are generated.

  Moreover, if cutting with a saw on site is necessary, it will be a so-called carpentry work that requires skill, experience and skill, so it will be a construction work by limited human resources, making it difficult to secure human resources etc. The construction work cannot be performed efficiently and smoothly, and the cost is increased.

  The present invention provides a wooden floor structure and a wooden floor construction method capable of solving the problems of the above-mentioned conventional techniques, preventing the contamination of the construction site, and enabling simple and efficient construction and cost reduction. For the purpose.

  In order to achieve the above object, the present invention is summarized as follows.

[1] A wooden floor structure to be constructed on the foundation substrate,
A plurality of raised plates laid on the foundation substrate and composed of a synthetic resin foam;
A plurality of flooring support plates laid on the raised plate;
A gap retaining plate that is disposed in the gap between the floor support plate and the wall surface on the raising plate and can be cut by a cutter knife or scissors;
A wooden floor structure, comprising: a plurality of wooden floor materials spread on the floor material support plate and the gap plate and cut by a cutter knife or scissors.

  [2] The wooden floor structure according to item 1 above, wherein the gap plate is configured by laminating thin plates made of a medium fiberboard on a substrate made of a synthetic resin foam.

  [3] The wooden floor structure according to the above item 1 or 2, wherein a joint plate is provided on the foundation base in parallel with the raised plate and capable of fixing the flooring support plate via a fixing tool.

  [4] The wooden floor structure according to any one of items 1 to 3, wherein a gap is formed between adjacent floor material support plates, and a gap retaining plate is disposed in the gap.

  [5] The wooden floor structure according to any one of items 1 to 4, wherein a non-land absorbing plate made of a synthetic resin foam is laid on the lower side of the raised plate on the foundation substrate.

[6] The wooden flooring has a base material and a decorative layer laminated on the base material,
6. The wood floor structure according to any one of the preceding items 1 to 5, wherein the base material is configured by laminating a wood layer made of wood fiber board on a high specific gravity layer made of a high specific gravity sheet.

[7] The wooden flooring has a base material and a decorative layer laminated on the base material,
6. The wooden floor structure according to any one of the preceding items 1 to 5, wherein the base material is configured by interposing a high specific gravity layer made of a high specific gravity sheet between upper and lower wooden layers made of a wooden fiber board.

  [8] The wooden floor structure according to any one of the preceding items 1 to 7, wherein the joint portions of the adjacent wooden floor materials are joined by a phase jump joint.

[9] A method for constructing a wooden floor to be constructed on a foundation substrate,
Laying a plurality of raised plates made of synthetic resin foam,
Laying a plurality of flooring support plates on the raised plate;
A step of disposing a gap plate that can be cut with a cutter knife or scissors in the gap between the floor support plate and the wall surface on the raising plate;
And a step of laying a plurality of wooden floor materials that can be cut with a cutter knife or scissors on the floor material support plate and the gap plate.

  [10] The method for constructing a wooden floor as recited in the aforementioned Item 9, further comprising a step of removing the tatami laid on the foundation substrate before laying the raised board.

  According to the wood floor structure of the above invention [1], the gap plate that can be cut with a cutter knife or the like is disposed in the gap between the floor material support plate and the wall surface. Thus, a flat flooring support surface without a gap can be formed, and the flooring can be reliably applied thereon. Therefore, the construction member can be cut with a cutter knife without using a saw, so that the cutting work can be easily performed, and the generation of chips during cutting can be prevented, thereby reliably preventing contamination on site. it can.

  Moreover, since it is not necessary to cut with a saw on site, a saw operation that requires experience and skill, so-called carpentry work, can be omitted. Accordingly, human resources such as installers can be easily selected, construction work can be performed efficiently and smoothly, and costs can be reduced.

  According to the wood floor structure of the above invention [2], the above-mentioned effect can be obtained more reliably.

  According to the wood floor structure of the above invention [3], the joint board is arranged at an intermediate position in the construction area, and the floor material support plate can be fixed by the fixing tool even in the joint board portion. The support plate can be fixed in a stable state, and a wooden floor having a more stable structure can be formed.

  According to the wood floor structure in the above invention [4], the gap support plate is disposed between the adjacent floor support plates, so that the size of the floor support plate can be adjusted even at an intermediate position in the construction area. The size adjustment amount can be increased, and versatility can be further improved.

  According to the wood floor structure in the above inventions [5] to [7], the above effects can be obtained more reliably.

  According to the wood floor structure in the above invention [8], the joining between adjacent wood floor materials can be easily released, and partial replacement of the wood floor material can be easily performed.

  According to the wood floor construction method of the invention [9], a wood floor structure having the above-described effects can be constructed.

  According to the wooden floor construction method of the above invention [10], the tatami floor can be converted into a wooden floor.

  FIG. 1 is a sectional view showing a wooden floor structure according to a first embodiment of the present invention. As shown in the figure, the wooden floor structure of the first embodiment is formed by renovation from a tatami floor to a wooden floor. In other words, before the renovation, a plurality of tatami mats were laid on a foundation ground (1) such as a concrete slab and a tatami floor was formed. After the tatami was removed from this tatami floor structure, The floor finish is applied to form the following wooden floor structure.

  As shown in FIG. 1, the wood floor structure of the present embodiment has a kimono joist (2) installed at the peripheral edge of the foundation substrate (1), and a non-land absorbing plate (3) on the foundation substrate (1). Is laid. Further, a raised plate (4) is laid on the non-land absorbing plate (3), and a wooden floor is provided on the raised plate (4) via a floor material support plate (5) and a gap plate (6). Material (7) is laid.

  In the present embodiment, the wrinkle joist (2) is provided in order to prevent wall wrinkles from sinking on the floor finish surface. The kimono joist (2) is preferably made of a member that can fix a floor material support plate (5) and a gap-holding plate (6), which will be described later, with screws, nails or other fixing members, such as a wood material.

  In addition, the kimono joist (2) has a thickness (height dimension) corresponding to the total thickness of the non-land absorbing plate (3), the raised plate (4) and the flooring support plate (5) described later. Specifically, it is set to 35 to 45 mm, preferably 37 to 43 mm.

  This wrinkle joist (2) is arranged along the wall surface (12) on the foundation substrate (1), and is fixed to the wall surface (12) by fixing tools (25) such as screws and nails. The width of the kimono joist (2) is preferably set to 20 to 45 mm in consideration of fixing workability such as driving with a fixing tool (25) such as a screw or a nail.

  However, in the present invention, the kimono joist (2) may be fixed to the base substrate (1) by using an adhesive or a double-sided tape in addition to the above-described fixing tool (25). ) And an adhesive or double-sided tape may be used together.

  Examples of the double-sided tape used in the present invention include those in which a pressure-sensitive adhesive (adhesive material) is applied on both sides of a tape base material, and those in which fibers such as glass fibers are dispersed and mixed in the pressure-sensitive adhesive layer. Those that do not peel even when the temperature and humidity change can be used more suitably.

  Here, in the present embodiment, the kimono joists (2) are arranged directly on the foundation foundation (1) made of concrete slab. However, the present invention is not limited thereto, and in the present invention, for example, on the foundation foundation (1). When the rough board is attached via the floor joists, the kimono joists (2) may be arranged on the rough boards.

  In other words, as a tatami floor structure before construction of a wooden floor, that is, before refurbishment, a structure in which tatami is placed directly on the foundation foundation (1) or a rough board is attached to the foundation foundation (1) via floor joists. A structure in which a wooden base is formed and a tatami is arranged on the wooden base is adopted. However, when the tatami is directly arranged on the basic base (1) before the renovation, this embodiment is used at the time of the renovation. If the kimono joist (2) is placed directly on the foundation ground (1) as shown in Figure 1, and the tatami mat is placed on the foundation foundation (1) through a wooden ground such as a rough board before renovation At the time of refurbishment, a wooden base such as a rough board is used as it is, and a kimono joist (2) is arranged on the wooden base.

  Of course, in the present invention, even if the tatami mats are directly arranged on the foundation foundation (1) before the renovation, a floor joist or a rough board may be newly assembled on the foundation foundation (1) at the time of the renovation. On the contrary, even if the tatami mats are placed on the foundation ground (1) through a wooden base such as a rough board before renovation, the wooden ground is removed during renovation and The joist (2) may be arranged directly.

  In the present embodiment, the wall surface (12) is usually constituted by a sill or the like. In addition, when it renovates from a tatami floor to a wooden floor as mentioned above, a wall surface (12) may be comprised by tatami mating.

  Note that the kiwi joist (2) is not necessarily fixed to the wall surface (12), but may be fixed to the base substrate (1) or a wooden substrate such as a rough board as described above.

  On the foundation substrate (1), a plurality of uneven absorption plates (3) are laid without gaps over the entire substrate surface. The uneven absorption plate (3) is provided to absorb unevenness formed on the upper surface of the foundation substrate (1).

  The non-land absorbing plate (3) can be suitably made of a synthetic resin foam such as polyethylene (PE), polyurethane (PU), polystyrene (PS), polypropylene (PP), and in particular, polyethylene. It is good to use what is comprised with a foam.

  The foaming ratio of the synthetic resin foam constituting the non-land absorbing plate (3) is set to about 10 to 50 times, preferably about 20 to 40 times. That is, if the expansion ratio is too large, sinking during walking on the floor may increase, and conversely, if the expansion ratio is too small, unevenness may not be absorbed. For reference, in this embodiment, the expansion ratio is set to 30 times.

  In the present embodiment, the non-land absorbing plate (3) is made of the above-mentioned synthetic resin foam molded body, and therefore, without using a saw, a cutter knife or scissors (hereinafter referred to as “cutter knife or the like as necessary”). Can be cut easily and accurately.

  The non-land absorbing plate (3) is preferably set to a thickness of 5 to 10 mm. That is, if this thickness is too thin or too thick, there is a risk that unevenness cannot be absorbed reliably.

  This uneven absorption plate (3) may be simply placed on the foundation substrate (1), but it should be fixed to the foundation substrate (1) with double-sided tape or the like so as to reliably prevent displacement. Also good.

  In the present invention, the non-land absorbing plate (3) is not necessarily laid and can be omitted. For example, when flooring is performed using a wooden base such as a rough board before refurbishment as it is, there is no unevenness in the rough base of the wooden base. It may be laid directly.

  On the non-land absorbing plate (3), a plurality of raised plates (4) are laid on almost the whole area. This raising plate (4) is provided for raising or for heat insulation.

  As the raising plate (4), a plate made of a synthetic resin foam such as polystyrene, polyurethane, polyethylene, or polypropylene can be suitably used, and a plate made of polystyrene foam is particularly preferable.

  The foaming ratio of the synthetic resin foam constituting the raised plate (4) is set to about 10 to 50 times, preferably about 20 to 40 times. That is, if the expansion ratio is too large, sinking during walking on the floor may be increased, and conversely, if the expansion ratio is too small, there is a risk of being adversely affected by unevenness such as the foundation ground. For reference, in this embodiment, the expansion ratio is set to 30 times.

  In the present embodiment, the raising plate (4) is formed of the above-mentioned synthetic resin foamed molded body, and therefore, like the non-land absorbing plate (3), it is easy to use a cutter knife or the like without using a saw. And it can cut accurately.

  The thickness of the raised plate (4) is not particularly limited, but the total thickness of the non-land absorbing plate (3), the raised plate (4), and a flooring support plate (5) described later is The thickness is about the same as the thickness of the kimono joist (2), specifically 55 mm or less, preferably 50 to 55 mm. This total thickness corresponds to the thickness of the tatami mat on the tatami floor before renovation.

  The raising plate (4) may be simply placed on the non-land absorbing plate (3), but may be fixed to the non-land absorbing plate (3) with a double-sided tape or the like.

  The raised plate (4) has a peripheral joint formed in a phased shape, and the edges of the adjacent raised plates (4) and (4) are joined together in a phased manner. In the present invention, the joining method between the adjacent raised plates is not particularly limited, and may be joined by the pinch joining method, or joined by the butt joining method in which the vertical end faces are simply butted together. You may make it do.

  A plurality of floor material support plates (5) are laid on the raised plate (4) and the kimono joist (2). This flooring support plate (5) is provided to support the wooden flooring (7) and ensure load resistance during walking.

  The floor material support plate (5) is not particularly limited as long as it has rigidity sufficient to ensure a predetermined load resistance. For example, a plywood, a fiberboard, a laminated board such as a laminated board, or a synthetic resin board What is comprised by the above etc. can be used suitably, Especially what is comprised by the particle board is good to use.

  Since the floor material support plate (5) has a predetermined rigidity, it cannot be cut accurately with a cutter knife or the like, and must be cut with a saw or the like.

  The thickness of the flooring support plate (5) is not particularly limited, but it is preferably set to 6 to 15 mm, preferably 9 to 12 mm in consideration of weight reduction while ensuring a predetermined rigidity.

  Of the plurality of flooring support plates (5) to be laid, the flooring support plate (5) disposed corresponding to the kimono joist (2) is used to fix the kimono joists (55) by fixing tools (55) such as screws and nails. 2). Further, the floor material support plate (5) that does not correspond to the kimono joist (2) may be simply placed on the raised plate (4), but may be fixed to the raised plate (4) with double-sided tape or the like. .

  In the present embodiment, the floor material support plate (5) is configured as a precut material that is preliminarily cut on the factory side in accordance with the site laying region. The support plate (5) is constructed so that it can be constructed only by laying it side by side without cutting. However, according to the size and shape of the laying area, it is impossible to pre-cut the floor material support plate (5) accurately without any inaccuracy, and a plurality of pre-cut floor material support plates (5). It is impossible to accurately install this in the site laying area without any gaps.

  For this reason, in this embodiment, each flooring support plate (5) is pre-cut so that it can be laid in a region that is slightly smaller than the laying region so that it can be efficiently constructed on site. Therefore, when the flooring support plate (5) is installed in the laying area at the site, a gap is formed between the flooring support plate (5) and the wall surface (12) at the outer peripheral edge of the laying area.

  Therefore, in the present embodiment, a gap fitting plate (6) described below is installed so as to fill this gap.

  As shown in FIG. 2, the gap plate (6) is constituted by a laminated plate (composite plate) in which a hard thin plate (62) is laminated on a substrate (61).

  Here, the substrate (61) is made of a foam of synthetic resin such as polystyrene, polyethylene, polypropylene, or polyurethane.

  Further, the hard thin plate (62) is made of, for example, a thin medium fiber plate (MDF) having a thickness of 2 mm or less, preferably 0.3 to 1.8 mm, more preferably 0.4 to 1.5 mm. .

  The gap plate (6) is not necessarily constituted by a composite in which a hard plate is laminated on a synthetic resin foam, and may be constituted by a single synthetic resin foam, for example.

  Further, the thickness of the substrate (61) is set so that the entire thickness of the gap retaining plate (6) is approximately the same as that of the floor support plate (5).

  In the present embodiment, the gap plate (6) is formed by laminating a thin plate (62) made of MDF on a synthetic resin foam substrate (61). It is configured so that it can be cut easily and accurately with a cutter knife or the like without using a saw, while ensuring the rigidity of the blade.

  As shown in FIGS. 1 and 3, in this embodiment, in the construction site, the clearance plate (6) is used with a cutter knife or the like in accordance with the clearance between the floor material support plate (5) and the side wall (12). Then, the gap plate (6) is filled and arranged so that the gap plate (6) fits into the gap with high accuracy. In this state, the gap plate (6) is fixed to a fixing tool such as a screw or a nail, double-sided tape, or adhesive. It is fixed using an agent.

  Accordingly, the floor material support plate (5) and the gap-fitting plate (6) are arranged in a state where they are pressed without gaps over the entire floor construction region.

  A plurality of wooden floor materials (7) are laid on the floor supporting surface composed of the floor material supporting plate (5) and the gap retaining plate (6) to form a wooden floor.

  As shown in FIGS. 4 and 5, this wooden flooring (7) has a basic structure of a laminated structure in which a decorative layer (74) is provided on a base material (70). The upper wood layer (73) and the lower wood layer (71) are laminated on the upper and lower surfaces of the intermediate high specific gravity layer (72).

  The wood layers (71) and (73) are made of wood fiberboard. As the wood fiber board, a material in which wood fiber is molded using an adhesive as a binder, or a material obtained by appropriately mixing and dispersing a fiber of synthetic resin such as polyethylene terephthalate resin or inorganic fiber such as glass fiber in the wood fiber is suitably used. be able to.

The wood fiber board has a specific gravity (density) of 0.35 (g / cm ³ ) or more, preferably 0.7 (g / cm ³ ) or more, more preferably 0.8 (g / cm ^3). ) Or more, more preferably 0.9 (g / cm ³ ) or more. That is, if this specific gravity is too small, the hardness cannot be sufficiently secured, drop resistance is lowered, and when the article is dropped on the floor surface, there is a possibility that a dent scratch may occur. There is.

  Further, as the wood fiber board, one having a thickness of 2.0 mm or less is preferably used, preferably having a thickness of 0.3 to 1.5 mm, more preferably having a lower limit of 0.4 mm or more. Is good.

  In other words, if it is too thick, the entire flooring material becomes hard and cutting with a cutter knife or scissors cannot be easily performed, and the flooring material as a whole cannot have an appropriate flexibility, and the wood fiber board is released. When stress in the valley warp direction occurs as a flooring material due to shrinkage due to moisture, the elastic repulsion force in the direction to return the valley warp increases, the valley warp cannot be corrected, the end of the flooring material rises, the flooring material There may be a gap between them. In addition, after the floor construction, the expansion and contraction of the wood fiber board due to moisture absorption and release is large, and there is a risk that the moisture absorption may push up or swell between the floor materials. May cause problems such as lifting.

  On the other hand, if it is too thin, the rigidity as the flooring material will be reduced, and if there is a step at the joint of the floor support surfaces (5) and (6), the flooring will be deformed along the step, resulting in a line pattern due to the step. May appear on the flooring surface.

  In the present embodiment, the upper wood layer (73) and the lower wood layer (71) in the base material (70) are formed to have the same thickness. For this reason, the balance of the material arrangement | positioning of thickness direction is good, the flatness as a flooring can fully be ensured, and it is difficult to produce a curvature.

  The high specific gravity layer (72) is composed of a high specific gravity sheet. The high specific gravity sheet is sandwiched between the upper wood layer (73) and the lower wood layer (71), thereby obtaining an appropriate flexibility as a flooring material to conform to the unevenness of the floor support surfaces (5) and (6). be able to.

  High specific gravity sheets include, for example, soft synthetic resins, synthetic rubber resins, synthetic resins (polymer materials) such as synthetic resin rubber, high specific gravity inorganic powders such as calcium carbonate and barium sulfate, iron, lead, etc. A material obtained from a composition in which a filler (a filler) made of a metal powder is mixed can be suitably used.

  The synthetic resin as the main component of the high specific gravity sheet may be a mixture in which a plurality of synthetic resins are mixed, and may further contain a hard synthetic resin.

  Furthermore, as this synthetic resin, it is preferable to use a resin that does not contain chlorine that generates harmful gases when incineration after disposal is taken into consideration.

  Further, as this synthetic resin, it is preferable to use a resin that does not contain a plasticizer that is blended in a polyvinyl chloride resin, for example, a resin that contains a rubber component such as a synthetic rubber resin or a synthetic resin rubber. That is, when a plasticizer is included, the plasticizer may gradually evaporate and contract and deform during long-term use as a flooring. Furthermore, the plasticizer dispersed throughout the high specific gravity sheet may move to the adhesive surface with the wood fiber board and cause delamination.

  As a specific composition for a high specific gravity sheet, a blend of a polyethylene resin, ethylene / propylene / rubber (rubber), and calcium carbonate can be cited as a preferred example.

Further, as the high specific gravity sheet, it is preferable to use a sheet having a specific gravity (density) of 1.5 to 3.0 (g / cm ³ ), preferably an upper limit value of 2.5 (g / cm ³ ) or less. Use a good one. In other words, if this specific gravity is too small, the stability during laying may be reduced. On the other hand, if the specific gravity is too large, the flooring itself may be increased in weight, which may cause deterioration in handling properties such as workability.

  In the present invention, as the high specific gravity sheet, it is preferable to use a sheet having a thickness in the range of equivalent to 10 times (1 to 10 times) the thickness of either the upper or lower wooden fiberboard (woody layer). Preferably, the lower limit value is 2 times or more and the upper limit value is 7 times or less, more preferably the lower limit value is 3 times or more and the upper limit value is 6 times or less. That is, when it is too thick, the influence of the thermal expansion of the high specific gravity sheet on the base material becomes large, and there is a possibility that a gap may be generated in the floor material joint portion of the floor surface that has been constructed. On the other hand, if it is too thin, the behavior associated with temperature and humidity changes will be greater in the wood fiberboard than in the high specific gravity sheet. There may be a gap.

  From another viewpoint, in this embodiment, the specific gravity of either one of the upper and lower wooden fiberboards (woody layers) is “df”, the thickness is “Tf”, and the high specific gravity sheet (high specific gravity layer) When the specific gravity is “dr” and the thickness is “Tr”, a relationship of dr · Tr ≧ 6 × df · Tf, preferably a relationship of dr · Tr ≧ 10 × df · Tf is preferably established. In other words, the product of specific gravity and thickness (mass per unit area) in the high specific gravity sheet is 4 times, preferably 6 times, more preferably 10 times or more than the product of specific gravity and thickness of the wood fiber board. It is good to set to.

  That is, when these thickness relations and mass relations per unit area are less than the above specific value, the high specific gravity sheet is easily affected by the expansion and contraction behavior of the wood fiber board, and the floor material (7) There is a risk that the valley warp cannot be sufficiently suppressed. As a result, when the flooring (7) is bonded with the double-sided tape, the flooring (7) is warped, the end of the flooring is lifted, or a gap is formed between adjacent flooring. May cause problems.

  The upper limit of the product of specific gravity and thickness is not particularly limited, but when used in a high temperature environment, etc., if there is a step on the floor support surface, the floor material is accompanied by softening of the high specific gravity sheet. It may be set considering that the whole is not deformed, and is usually set to about 17 times. In this case, as a matter of course, the thickness and rigidity of the upper and lower wood layers (71) and (73) are also taken into consideration.

  In the present invention, the high specific gravity layer (72) preferably employs a structure having a hardness (conforming to JISK6253 durometer hardness test type A) of 80 ° or more.

  That is, as the high specific gravity sheet, it is preferable to use a sheet having a hardness according to durometer hardness test type A described in JIS K6253 “vulcanized rubber hardness test method” of 80 ° or more, more preferably a hardness of 85 ° to It is good to use the thing of 95 degrees.

  When the hardness is less than 80 °, when an article falls on the floor material surface, the load cannot be sufficiently received by the high specific gravity sheet, and there is a possibility that a dent is generated. Furthermore, when the hardness is 85 ° to 95 °, even if there is a step of about 0.5 mm on the floor support surface, the effect of the step does not reach the floor material surface, and the line pattern due to the step on the floor material surface. Etc. are not displayed, and a good finish can be obtained.

  In addition, when this hardness exceeds 95 °, the elongation due to heat increases, which may cause generation of a valley warp, which is not preferable.

  In the present embodiment, as the decorative layer (74), a wood veneer made of natural wood or artificial reed, pattern printed resin sheet, pattern printed paper, surface coating, natural wood or artificial reed with wood grain printing, Further, a wood fiber board (upper wood layer 73) that has been concealed and printed with grain or the like or a combination thereof can be suitably used.

  The wood veneer may be either a wet veneer or a dry veneer, but a dry veneer is desirable because there is little change in the amount of moisture in the laminated bonded part to the wood fiberboard. Further, the thickness of the decorative layer (74) is arbitrary, but about 0.2 to 0.6 mm is usually adopted, and preferably about 0.2 to 0.4 mm.

  In the present embodiment, the upper and lower wood layers (71) (73) made of the above-mentioned wood fiberboard are laminated and bonded to both the upper and lower surfaces of the high specific gravity layer (72) made of the above-mentioned high-specific gravity sheet via an adhesive. A material (70) is formed, and a decorative layer (74) is laminated and bonded onto the base material (70) via an adhesive.

  Here, in the present invention, as the adhesive, it is preferable to use an adhesive that does not contain a solvent such as a hot melt type (reactive hot melt type), an epoxy resin type, a urethane resin type, or a solvent.

  That is, melamine type, phenol type, aqueous vinyl urethane type and the like that are usually used as an adhesive contain a solvent such as moisture, so that the solvent penetrates into the wood fiber board, and the solvent remains even after the adhesive is cured, This is because there is a risk of causing deformation such as harmful warping. In addition, when the difference of the residual amount of an adhesive agent or the nonuniformity of dispersion | distribution arises between an upper wood layer (73) and a lower wood layer (71), the possibility that curvature will arise cannot be denied.

  When bonding wood fiberboard to a high specific gravity sheet, one piece of wood fiberboard may be laminated on each side of the high specific gravity sheet, or two wood fiberboards may be laminated on both sides of the high specific gravity sheet simultaneously. You may make it do.

  The laminate bonding process of the wood fiber board and the decorative layer may be performed under either hot pressure or cold pressure. However, under high pressure, the high specific gravity sheet expands with heat. It is good to do with pressure.

  Further, in the step of laminating and bonding the decorative layer to the base material (70), when the decorative layer is pressure-bonded to the base material (70) to which the adhesive is applied, it may be performed by a hot and cold method. Further, it is desirable to heat the surface of the substrate or both the front and back surfaces before applying the adhesive to the substrate (70) in terms of adhesive application work, good adhesion of the adhesive, adhesion stability, and the like.

  In the present embodiment, when the base material (70) is manufactured in a low-temperature working environment such as winter, the wood fiber board is bonded and laminated through an adhesive with the high specific gravity sheet (72) preheated. The substrate (70) before curing is preferably cured under heating for a period until the adhesive is cured.

  That is, in this manufacturing method, by preheating before adhering the high specific gravity sheet to the wood fiber board, the internal stress of the high specific gravity sheet is removed and thermally expanded, and in that state, it is adhered to the wood fiber board, Since it is cured under heating, even if it is heated by a hot carpet etc. after the flooring construction, the high specific gravity sheet will reduce thermal expansion and more reliably cause harmful warping to the flooring. It can prevent, and it can prevent more reliably that a floor material edge part floats up and a clearance gap is formed between floor materials.

  The temperature at the time of preheating and the temperature at the time of curing are preferably set to about 40 ° C. or more according to the floor material temperature when heated by the hot carpet.

  The curing time may be set to a time until the curing of the adhesive is completed, but may be set longer than that time with a margin.

  For reference, when an epoxy resin-based adhesive is used, it is appropriate to set the curing time to 15 hours or longer.

  In the present embodiment, the floor material (7) may adopt a configuration in which the overall thickness is set to 2 to 9 mm, more preferably the lower limit value is 2.5 mm or more and the upper limit value is 6.0 mm. It is preferable to adopt the configuration set as follows.

  In other words, it is difficult to manufacture a product having an overall thickness that is too thin. On the other hand, if it is too thick, it will be heavy and will be difficult to handle, but it will also be more rigid and less flexible so that it will not fit into the floor support surface and will be difficult to cut. There is a fear.

  In the present embodiment, the shape of the flooring (7) is formed in a rectangular shape such as a rectangle in plan view, but the shape is not particularly limited. For example, the floor material (7) is formed in a square shape in plan view. You may do it.

  Moreover, the junction part which joins adjacent flooring materials is provided around the flooring (7). That is, the upper jagged portion (lower protrusion 75b) is formed on two adjacent sides of the four sides around the flooring (7), and the remaining two sides are associated with the upper jagged portion (75b). A lower counterbore portion (upper protrusion 75a) that can be joined is formed.

  In the present invention, the configuration of the joining portion is not limited to the above, and for example, a male ridge portion may be formed on two adjacent sides, and a female ridge portion may be formed on the remaining two sides. In addition to the shearing process and the above-described phase punching process, a phase stacking actual rowing process or the like may be used in combination.

  In the present invention, the flooring (7) is usually formed in a rectangular shape such as a rectangle or a square in plan view.

  The floor material (7) having the above structure is bonded to the floor support surface via a double-sided tape (76) or a peel-up adhesive while performing phase-clad bonding between adjacent floor materials. Is formed.

  In addition, as a double-sided tape (76), the thing similar to the above is used. In the present invention, the peel-up adhesive has the property of maintaining the tackiness for a long period of time, and can be easily peeled off even after adhesion.

  In the present embodiment, the application position and the number of application of the double-sided tape (76) are not particularly limited, and the application position and application amount of the peel-up adhesive are not particularly limited.

  The wood floor structure of the present embodiment has the above-described configuration, but as described above, this wood floor structure is formed by renovation from a tatami floor to a wooden floor. The remodeling method will be described below.

  That is, in the state before renovation, a plurality of tatami mats (not shown) are spread on the basic ground (1). First, the tatami mat is removed from this state.

  Subsequently, as shown in FIG. 1, the wrinkle joist (2) is arranged along the wall surface (12) along the peripheral edge of the basic substrate (1) and fixed by the fixing tool (25).

  Next, after laying a plurality of uneven absorption plates (3) on the foundation substrate (1), a plurality of raising plates (4) are laid on the uneven absorption plate (3).

  The non-land absorbing plate (3) and the raised plate (4) can be laid in a desired region with high positional accuracy by cutting with a cutter knife or the like as necessary. it can.

  Thereafter, a plurality of flooring support plates (5) are laid on the raised plate (4) and the wrinkle joist (2), and the flooring support plate (5) at the outer peripheral position is fixed to the wrinkle joist (2) ( 55).

  Here, as the floor material support plate (5), a pre-cut material cut in advance at the factory side is used, and cutting at the site is not performed. For this reason, as described above, a gap is formed between the floor support plate (5) and the wall surface (12) at the outer peripheral position.

  Then, a gap plate (6) is laid on the kimono joist (2) so as to fill the gap. At this time, the gap retaining plate (6) is cut at the site according to the shape and size of the gap. Accordingly, the gap retaining plate (6) can be fitted into the gap in a conforming state, and the gap retaining plate (6) and the floor material support plate (5) form a continuous flat floor support surface with no gap.

  Since the clearance plate (6) can be cut with a cutter knife as described above, the clearance plate must be cut easily and accurately with a cutter knife without using a saw. Can do.

  Next, on the floor support plate (5) and the gap plate (6), a plurality of floor materials (7) are joined to each other with a double-sided tape or a peel-up adhesive while the adjacent floor materials are joined together. Adhesive work will continue.

When the flooring (7) is laid, the flooring (7) is pressed downward with a predetermined pressure (about 9.8 N / cm ² ) to stabilize the adhesive state. Thereby, a wooden floor is formed, and the refurbishment work to the wooden floor is completed.

  As described above, according to the wood floor structure of the present embodiment, when cutting a member, it can be constructed using a cutter knife or the like without using a saw. Occasionally, generation of chips can be prevented, and contamination on site can be surely prevented.

  Moreover, since it is not necessary to cut with a saw on site, a saw operation that requires experience and skill, so-called carpentry work, can be omitted. Accordingly, human resources such as installers can be easily selected, construction work can be performed efficiently and smoothly, and costs can be reduced.

  Moreover, in the wooden floor structure of this embodiment, since the flooring (7) has flexibility (flexibility), for example, a part in which only one of the plurality of wooden flooring (7) is replaced. When performing the replacement work, simply insert a scraper or the like into the edge of the wooden floor material (7) to be replaced, and pull the wooden floor material (7) to turn up the floor material (7). Can be peeled off from the floor support surface (5) (6).

  At the time of stripping, the lower jagged portion (upper protruding portion 75a) side of the peripheral joint portion of the flooring (7) is first peeled off, and then the upper jagged portion (lower protruding portion 75b) is pulled off. Thereby, a desired wooden flooring (7) can be peeled off more reliably.

  On the other hand, when a new flooring (7) is pasted on the part where the flooring (7) has been partially peeled off, the upper scraped portion (lower protrusion 75b) of the new flooring (7) After inserting the existing floor material (7) so as to be slid into the lower scraped portion (upper projection portion 75a), the new floor material (7) is subjected to the lower facing portion (upper projection portion 75a). If the floor material (7) is installed so as to overlap the upper scraping portion (lower protrusion 75b) and the entire new floor material (7) is pushed downward, the floor material (7) is partially Can be pasted. Also in this affixing operation, the flooring (7) can be flexed freely by its flexibility, so that the flooring (7) can be affixed easily and reliably.

  6 and 7 are sectional views showing a wooden floor structure according to a second embodiment of the present invention. As shown in both figures, in this floor structure, a joint plate (8) is provided so as to be provided side by side with the raised plate (4). That is, when laying a plurality of raised plates (4), the raised plate (4) and the joint plate (8) are placed on the non-land absorbing plate (3) so that the joint plate (8) is disposed at a predetermined location. Lay as appropriate. Of the plurality of flooring support plates (5) laid on the raising plate (4) and the joint plate (8), the floor support plate (5) at the position corresponding to the joint plate (8) is replaced with screws and nails. It fixes to a joint board (8) with fixing tools (55), such as.

  Here, in this embodiment, the joint plate (8) is a nail made of a wood material such as plywood, MDF, and particle board on a base material (81) made of a synthetic resin foam such as polystyrene, polyethylene, polypropylene, and polyurethane. It is constituted by a composite member in which a fixed layer (82) that can be beaten is laminated. The thickness of the joint plate (8) is the same as that of the raised plate (4).

  Since other configurations are substantially the same as those in the first embodiment, the same reference numerals are given to the same portions, and redundant description is omitted.

  In the wood floor structure of the second embodiment, the same effects can be obtained as in the first embodiment.

  Here, it is difficult to cut the joint plate (8) with a cutter knife or the like, but since the joint plate (8) is not intended to be laid down, it is cut into small eyes in advance as a precut material. What is necessary is just to make it lay in the aspect in which a clearance gap is formed in the periphery. That is, the joint plate (8) does not need to be cut at the site, and a saw is not used.

  Furthermore, in this embodiment, the joint board (8) is arrange | positioned in the predetermined position (intermediate position) in a flooring construction area | region, and the flooring support board (5) is also fixed to a fixing tool (55 in the joint board part). ), The floor material support plate (5) can be reliably fixed in a more stable state, and a wooden floor having a more stable structure can be formed.

  In the second embodiment, as the joint plate (8), a composite member in which a wooden fixing layer (82) is laminated on a resin base material (81) is used. However, the invention is not limited thereto. In the present invention, for example, as shown in FIG. 8, as the joint board (8), one made only of a wood material such as plywood, MDF, and particle board can also be used.

  In the above embodiment, the gap plate (6) is laid on the gap between the side wall (12) and the floor material support plate (5), that is, on the outermost part of the floor material laying region. However, in the present invention, it may be laid between intermediate portions of the floor material laying region, that is, between the adjacent floor material support plates (5) and (5). For example, as shown in FIG. 9, when laying the floor support plate (5), the gap between the adjacent floor support plates (5) and (5) is filled with the gap plate (6), and the floor support plate ( 5) and the gap plate (6) may be spread in parallel. In this case, as shown in the figure, the joint plate (8) is laid at the position where the gap plate (6) is arranged, and the gap plate (6) can be supported by the joint plate (8). It is good to configure as follows.

  In this configuration, since the gap plate (6) is also arranged between the adjacent floor material support plates (5) and (5), the size of the floor support plate (5) is also at an intermediate position in the construction area. Adjustment can be performed, the size adjustment amount can be increased, and versatility can be further improved.

  In the above-described embodiment and the like, the high specific gravity layer (72) made of a high specific gravity sheet is interposed between the wood layers (71) and (73) of the wood fiber as the wooden floor material (7). In the present invention, as shown in FIG. 10, the base material (70) is made of a high specific gravity sheet similar to the above, as shown in FIG. You may use what laminated | stacked the wood layer (73) made from a wood fiber similar to the above on the high specific gravity layer (72). Even when the wooden flooring (7) shown in FIG. 9 is used, the same effects can be obtained as described above.

It is sectional drawing which shows the wooden floor structure which is 1st Embodiment of this invention. It is sectional drawing which shows the clearance gap board applied to the wooden floor structure of 1st Embodiment. It is a top view shown in the state where the wooden flooring was removed in the wooden floor structure of a 1st embodiment. It is a figure which shows the wooden flooring applied to the wooden floor structure of 1st Embodiment, Comprising: The figure (a) is a top view, The figure (b) is a back view. It is sectional drawing which shows the wooden flooring of 1st Embodiment. It is sectional drawing which shows the wooden floor structure which is 2nd Embodiment of this invention. It is sectional drawing which shows the joint board applied to the wooden floor structure of 2nd Embodiment. It is sectional drawing which shows the wooden floor structure which is a modification of this invention. It is sectional drawing which shows the wooden floor structure which is another modification of this invention. It is sectional drawing which shows the wooden flooring which is another modification of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Foundation ground 12 ... Wall surface 2 ... Kiwa jota 3 ... Non-land absorption board 4 ... Raised board 5 ... Floor material support board 55 ... Adhering tool 6 ... Gap board 61 ... Substrate 62 ... Hard thin board 7 ... Wood floor material 70 ... Base material 71, 73 ... Wood layer 72 ... High specific gravity layer 74 ... Makeup layer 8 ... Joint plate

Claims (10)

A wooden floor structure to be constructed on the foundation substrate,
A plurality of raised plates that can be cut with a cutter knife or scissors that are laid on a base substrate and are made of a synthetic resin foam having a thickness of 55 mm or less and an expansion ratio of about 10 to 50 times ;
A plurality of flooring support plates that are laid on the raised plate and have a thickness of 6 mm to 15 mm and are composed of plywood, fiberboard, wood board, or synthetic resin board ;
A synthetic resin foam or a synthetic fiber board is laminated on the synthetic resin foam with a thickness similar to that of the floor material support plate , disposed in the gap between the floor material support plate and the wall surface on the raised plate. A gap plate that can be cut with a cutter knife or scissors,
A cutter knife or scissors constructed by a laminated structure in which a flooring support plate and a gap plate are laid down and a decorative layer is provided on a base material composed of a wood layer and a high specific gravity layer with a thickness of 2 to 9 mm. A wooden floor structure comprising a plurality of severable wooden floor materials.   The wooden floor structure according to claim 1, wherein the gap retaining plate is configured by laminating a thin plate made of a medium fiberboard on a synthetic resin foam substrate.   The wood floor structure according to claim 1 or 2, wherein a joint plate is provided on the foundation base in parallel with the raised plate and capable of fixing the floor material support plate via a fixing tool.   The wooden floor structure according to any one of claims 1 to 3, wherein a gap is formed between adjacent floor material support plates, and a gap retaining plate is disposed in the gap.   The wooden floor structure according to any one of claims 1 to 4, wherein a non-land absorbing plate made of a synthetic resin foam is laid on the underside of the raised plate on the foundation substrate. The wooden flooring has a base material and a decorative layer laminated on the base material,
The wood floor structure according to any one of claims 1 to 5, wherein the base material is configured by laminating a wood layer made of wood fiber board on a high specific gravity layer made of a high specific gravity sheet. The wooden flooring has a base material and a decorative layer laminated on the base material,
The wood floor structure according to any one of claims 1 to 5, wherein the base material is configured by interposing a high specific gravity layer made of a high specific gravity sheet between upper and lower wood layers made of a wood fiber board.   The wood floor structure according to any one of claims 1 to 7, wherein joint portions of adjacent wood floor materials are joined by phased joint joining. A construction method of a wooden floor to be constructed on a foundation substrate,
A step of laying a plurality of raised plates made of a synthetic resin foam having a thickness of 55 mm or less and an expansion ratio of about 10 to 50 times , and capable of being cut by a cutter knife or scissors;
A step of laying a plurality of flooring support plates having a thickness of 6 mm to 15 mm and having rigidity composed of plywood, fiberboard, wood board, or synthetic resin board on the raised board;
A synthetic resin foam or a laminated board in which a medium fiberboard is laminated on the synthetic resin foam in the gap between the floor material support plate and the wall surface on the raised plate in the same thickness as the floor material support plate A step of arranging a gap plate that can be cut by a cutter knife or scissors constituted by :
Can be cut with a cutter knife or scissors composed of a laminated structure in which a decorative layer is provided on a base material composed of a wood layer and a high specific gravity layer on a floor material support plate and a gap plate, with a thickness of 2 to 9 mm. A method for constructing a wooden floor, comprising a step of spreading a plurality of wooden floor materials.   The construction method of the wooden floor of Claim 9 which further includes the process of removing the tatami laid on the foundation | substrate foundation | substrate before laying the raising board.

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