JP6041089B2 - Tatami humidity control construction - Google Patents

Description

  In this invention, the tatami mat is laid by interposing a corrugated porous air-permeable material that can withstand normal loads under the tatami mat between the laying floor surface and the back surface of the tatami mat. The present invention relates to a tatami mat humidity control laying structure that can fully cope with moisture countermeasures in the current living environment where the humidity effect is maximized and the airtightness of houses has advanced.

  Recently, the airtightness of houses has progressed, and the floor surface on which tatami mats are laid is covered with veneer plywood without gaps. When laid, during the rainy season, the back of the tatami mat and the back edge, which are very close to the floor surface, are likely to get wet, and once it gets wet, it becomes extremely difficult to dissipate this moisture, causing mold to occur. It is unsanitary and, to some extent, can cause odors.

  For this reason, conventionally, as described in Japanese Patent Laid-Open No. 10-61048 (Patent Document 1), a ventilation structure called a spacer panel that creates a recessed space parallel to the tatami back surface is interposed between the sealed floor surface and the tatami back surface. A tatami laying structure in which a tatami mat is laid on a closed floor is well known.

  Since the essential spacer panel in Patent Document 1 is a ventilation structure whose main purpose is to prevent condensation on the inner surface of the wall surface constituting the space, as described in claim 1 of the above publication, In the gazette, as described in paragraph (0024) together with FIG. 2 of the gazette drawing, the projections are provided on both sides of the panel over the entire surface so as to project regions between the projections. It is a spacer panel called a ventilation structure that is communicated in at least one direction parallel to the surface and the back surface of the tatami to form a recessed space.

  Therefore, since this conventional spacer panel does not have any ventilation holes for escaping moisture in the thickness direction of the panel no matter where in Patent Document 1, this spacer panel is attached to a sealed floor surface or a ventilation floor surface and a tatami back surface. In the case of interposing use between the floor and the floor, there is a fundamental and serious problem that the folded recess space between the lower surface of the panel and the floor surface is wasted on the back surface of the tatami mat.

  In addition, since the spacer panel has no ventilation holes, the moisture generated in the recessed space below the back of the tatami does not escape in the thickness direction of the tatami, and the panel absorbs the moisture absorbing / releasing action of the folds. There is a fundamental and serious problem that the sealed floor surface in the current living environment, which has been largely hindered by itself and has become highly airtight, cannot be dealt with at all.

  For this reason, in Patent Document 1, as a measure of bitterness, as described in claim 2 of Document 1, the recessed space parallel to the back surface of the spacer panel laid under the tatami is placed in the Japanese room along the outer edge of the tatami. By communicating with the holes opened in the building structure such as turning edges and sills, the moisture and odor generated in the recessed space flow out in the direction of each hole of the building structure parallel to the back of the tatami mat, and these holes are passed through the holes. After that, it is supposed to be diffused indoors from the vicinity of the outer edge of the tatami mat.

  However, in the moisture countermeasures in the above-mentioned document 1, a large number of air holes are opened in a building structure part that can be seen at a glance, such as the turning edge of a Japanese-style room. At the same time, the vent hole is easily clogged with dust and the like, and has a fundamental and serious problem that the moisture dissipating action is hindered and the appearance of the room is deteriorated.

  In the first place, this conventional example patent document 1 describes a tatami floor based on the weight of a resident on a tatami mat and the weight of furniture corresponding to a weight load of about 100 kg on a hard disk having a diameter of about 10 cm placed on a tatami surface. Description of spacer panel that received normal tatami mat load applied to the surface (hereinafter referred to as normal tatami mat load) and spacers such as panel material and thickness, panel projection diameter and projection height, and spacing between projections There is no description of how to make the panel itself, and there is no suggestion.

  Therefore, based on the description in paragraph (0032) of Document 1, the thickness of the tatami in Document 1 is determined based on the thickness of the tatami in the side view of FIG. The panel thickness is about 30 mm, which is half of the general tatami thickness of 60 mm, and the panel thickness is about 2-3 mm.

  Further, when the height of each convex portion on both sides of the panel is determined based on the thickness of the tatami mat, the height of each convex portion is about 15 mm, which is about half of the tatami thickness, and is a hollow hemispherical spot. The projecting interval is about 90 mm, which is about three times the tatami thickness, and it can be estimated that the projecting interval is sparse. The description on the load on the panel is not clear or suggested at all.

  And since the spacer panel in the said patent document 1 is focusing on the spacer panel for moisture countermeasures built in the wall surface part which comprises space like Claim 1 of the literature 1, it is from the said normal tatami floor load. However, the material and the thickness may be sufficient to withstand a remarkably small lateral pressure, and the panel strength when the panel is used between the floor and the back of the tatami mat as described in claim 2 of Document 1 Is not described at all, and is not known or suggested at all.

  Therefore, when the spacer panel according to claim 1 is used as it is between the floor surface and the back surface of the tatami mat as described in claim 2 of document 1, the spot-like hemispherical hollow convex portions on both sides of the spacer panel are It is fundamental and enthusiastic that it cannot withstand normal tatami mat load, each hollow convex part is crushed, no longer acts as a ventilation member, and the tatami part is partially bent and dented, making it unusable. There are some problems.

  In order to eliminate the above problems, if the spacer panel is made of the thin plastic plate made of a material hard enough to be laid under a tatami mat as shown in claim 2 of Patent Document 1 and FIG. Even under the tatami mat load, the panel part directly under the convex part that received this load can not withstand the load, breaks and breaks, and if the number of convex parts is increased to prevent this damage, this increased There arises a big problem that is not compatible with each other, that an important concave space is reduced by the convex portion.

  Therefore, in order to avoid the above accident, if the spacer panel is made of metal or reinforced plastic so that it does not break even if it is thin, the panel itself between the spot-like convex portions with the sparse projecting spacing will now be folded. As a result, the tatami mat sinks every time a person walks, and the tatami on the side of the armpit dents.To eliminate this problem, the number of protrusions is reduced. If the number is increased, as described above, the important concave space is reduced, which causes the same incompatible problem as described above.

  Furthermore, in order to avoid each of the above problems, in order to make the spacer panel a strong panel that does not break and does not flex under the normal tatami mat load, it is necessary to make the panel thick and sturdy with metal or reinforced plastic, This time, the panel itself will become heavy, and it will be cumbersome, inconvenient and troublesome in all aspects such as molding production, mold management, packing storage, transportation and distribution, sales purchase, unpacking laying, maintenance inspection, etc. This leads to a fundamental and serious problem of being expensive.

  Further, in the spacer panel that is not damaged and does not bend under the normal load under the tatami mat, in addition to the above problems, the spot-like convex portions with the sparse projecting intervals are now separated from the hemispherical top portion to the back surface of the tatami mat. The distance between the back surface of the tatami mat and the top surface of the spacer panel is narrowed by this submerged dimension, and the air permeability deteriorates only by this narrowed dimension, and the laying height of the tatami is partially the above submerged dimension. Therefore, if the number of the convex portions is increased in order to eliminate the dents, an important problem similar to the above, that is, an important concave space is reduced.

  Apart from the above Patent Document 1, a method for constructing a tatami floor described in Japanese Patent Application Laid-Open No. 2002-47784 (Patent Document 2) is also well known. In this conventional example, a thickness adjusting material made of a non-breathable synthetic resin foam having a constant thickness processed into a continuous concavo-convex structure on the lower surface in contact with the floor surface is prepared. The adjustment material is laid down with the convex portion on the bottom surface, and the flat surface of the thickness adjustment material is attached to the back surface of a thin tatami mat of 20 mm or less.

  However, the thickness adjusting material in Patent Document 2 is also free from a vent hole for removing moisture in the thickness direction as in the spacer panel in Patent Document 1, and has a tatami mat on the flat upper surface of the thickness adjusting material. Since the tatami laying construction method lays the backside in close contact, there is no ventilation space underneath the backside of the tatami mat, so the moisture absorption and dehumidification action of the folding fold held by the tatami is greatly increased on the flat surface of the thickness adjusting material itself There is an essential and big problem that the sealed floor surface in the current living environment that has been obstructed and the airtightness of the housing has advanced cannot be dealt with at all.

  Therefore, in this tatami floor construction method according to this conventional example, moisture does not escape at all from the back of the tatami mat to the tatami surface. Therefore, in Patent Document 2, as described in the paragraph (0006), there is an odor. There is a description that it is effective to make a hole in the synthetic resin foam with a needle when it is considered to be terrible.

  However, even if a thin hole such as the above-mentioned needle hole is opened in a thick synthetic resin foam that does not have air permeability, the flat surface of the thickness adjusting material is in close contact with the back of the tatami mat and the bottom of the tatami mat is ventilated. Since there is no space at all, there is a fundamental and serious problem that moisture diffusion under the tatami is scarce.To eliminate this problem, if the needle hole is enlarged or the number of needle holes is increased, Thus, the strength of the thickness adjusting material is weakened by a corresponding amount, and this is an incompatible and substantial problem that the normal load under the tatami mat cannot be endured and some items become unusable.

Japanese Patent Laid-Open No. 10-61048 JP 2002-47784 A

  This invention is a tatami mat moisture countermeasure that eliminates many fundamental problems in each of the above-mentioned documents, so that the tatami mat itself can exhibit the moisture absorption and moisture release effect to the maximum, and the airtightness of the house has progressed. The purpose is to provide a humidity control laying structure for tatami mats that can sufficiently cope with the living environment.

  The first object of the present invention is to prepare a rigid porous corrugated plate in which a large number of ridge line portions and valley line portions are formed in multiple rows alternately in parallel and at the same height, and the ridge line portions of the perforated wave plate are not stretched. A corrugated porous breathable material capable of breathing in all directions in which the spread of each of the ridge line portions subjected to the normal tatami mat load is blocked by the breathable nonwoven fabric, None, by laying a tatami with this ventilation material interposed between the floor and the back of the tatami, the omnidirectional ventilation space possessed by the corrugated porous ventilation material is formed between the back and the floor of the tatami I was able to achieve it.

  The second object of the present invention is to form a large number of linear ridge lines and linear valley lines in a parallel and uniform row on a thermoplastic rigid perforated plate having a large number of ventilation holes. A corrugated perforated corrugated plate is made, a non-stretchable non-woven fabric is stretched on the numerous ridges of the perforated corrugated plate, and the ridges are bridged with the breathable nonwoven fabric. The nonwoven fabric and the breathable nonwoven fabric are heated and welded to prevent the spread of the respective ridge line portions with the breathable nonwoven fabric, so that the folds of the respective ridge line portions subjected to the normal tatami mating load are crushed and bent. The corrugated porous ventilation material that can be ventilated in all directions blocked by the above is constructed, and the ventilation material is interposed between the floor surface and the back surface of the tatami mat, and the tatami mat is laid on the ventilation nonwoven fabric, thereby the back surface and the floor of the tatami mat. An omnidirectional ventilation space possessed by the corrugated porous ventilation material is formed between In could be achieved.

  When tatami is laid on the corrugated porous ventilating material according to the present invention laid on a closed floor surface or a ventilated floor surface, the normal tatami mat load from the back of the tatami is perpendicular to each of the ridge lines and valley lines in multiple rows. In addition, each ridge line part and valley line part can support tatami mats, and this support force generates a spreading force in a direction in which each ridge line part and valley line part are separated from each other. As a result, each ridge line part and valley line Each part receives a pressing force in the direction of crushing and bending.

  However, the expansion separation between the ridge line portions and the valley line portions due to the expansion force is ensured by the tension of the non-stretchable non-woven fabric stretched between the ridge line portions of the multi-rows and bonded to each other. Since each ridge line part and the valley line part are not separated from each other, the ridge line part and the valley line part subjected to the normal tatami mat load can be reliably prevented from being crushed and bent.

  Therefore, even if the normal tatami mat load is applied to each ridge line part and valley line part of the multi-row, the undulated porous ventilation material according to the present invention that does not bend, bend, and not bend a large number of ridge line parts and valley line parts is Even when used under a tatami mat, this ventilation material can reliably maintain the omnidirectional ventilation space, maximize the moisture absorption and desorption effect of the current general tatami mat, and dissipate the moisture under the tatami indoors As a result, it has become possible to cope with the current living environment where the airtightness of houses has progressed.

  However, as in the invention described in claim 2 according to the present invention, when tatami is laid on the non-stretchable non-woven fabric in the corrugated porous ventilation material laid on the floor surface, between the ridge line portions of the multiple rows Since the pressing force due to the load on the back surface of the tatami mat is applied to the non-woven fabric, the tension of the non-woven fabric increases, and the back surface of the tatami mat can be supported slightly even with the increased non-woven fabric tension.

  Since the tension of the nonwoven fabric increased simultaneously with the support of the tatami mat is a force that draws the ridge line portions of the multi-rows together, it is possible to cancel the expansion force between the ridge line portions as described above. Since the expansion and separation between each other and the valley line parts can be more reliably prevented, the crushing and bending can be more reliably prevented, and the increased tension of the non-woven fabric can be applied to the ridges on each of the multiple ridge line parts. The amount of biting on the back side was further reduced.

  If the planar contour of the corrugated porous ventilation material according to the present invention is approximated to the planar contour of the laying tatami mat, it becomes the size of a general plywood plate that is usually referred to as a “sub-board”, so that its production management / packaging storage / transport distribution・ It is easy to handle in all aspects such as sales, purchase, unpacking, maintenance and inspection, and it is advantageous in terms of price.

  In addition, the corrugated porous air-permeable material according to the present invention was polymerized by placing the two valley portions into each other and joining them together to polymerize the two pieces on the breathable nonwoven fabric. It becomes almost half of the height of the case, which is convenient without being bulky during transportation.

Expanded sectional view showing an example of the embodiment of the present invention The perspective view which shows an example of the perforated plate used for this invention The perspective view which shows an example of the corrugated porous ventilation material used for this invention Partially enlarged perspective view of what is shown in FIG.

  To summarize the embodiment of the humidity control laying structure of the tatami mat according to the present invention, the perforated plate 2 having a large number of vent holes 1 as shown in FIG. Are formed in multi-rows alternately in parallel and at the same height to make the perforated corrugated plate 5 as shown in the above figures, and the non-stretchable non-stretchable nonwoven fabric 6 is formed on each of the ridges 3 of the multi-row in the perforated corrugated plate 5 As shown in each figure, the stretched ridge line portions 3 subjected to normal tatami mat load are prevented by the air-permeable nonwoven fabric 6 so as to prevent the spread between the ridge line portions 3 subjected to normal tatami mat load. A porous air-permeable material 9 is formed, and the air-permeable material 9 is interposed between the floor surface 10 and the tatami back surface 12 as shown in FIG. The omnidirectional ventilation space 13 held by the ventilation member 9 as shown in FIG.

  Next, specific examples of the present invention will be described with reference to the drawings. In the following description, the size of a tatami mat is a working general size having a width of about 88 cm and a length of about 176 cm, together with the corrugated porous ventilation material 9 according to the present invention. When the tatami mat is laid on the floor surface, the tatami mat used in the present invention has a tatami thickness of about 60 mm so that the laying height is flush with the turning edge and the sill height around the tatami mat. An embodiment in which the ventilation member 9 has a total height of about 10 mm, which is less than the tatami mat, will be described.

  In making the corrugated porous ventilation material 9 according to the present invention, first, a thermoplastic hard plastic material such as polypropylene or the like is used to form a rounded rectangular ventilation hole 1 having a side of about 2 mm, or a diameter, by a general thermoforming means. A thermoplastic perforated plate 2 having a thickness of about 1 mm as shown in FIG. 1 is prepared in which circular vent holes 1 having a diameter of about 2 mm are regularly and uniformly formed at a pitch of about 1 mm as shown in FIG.

  Next, the above-described perforated plate 2 is formed by a conventional general heating embossing machine, with a straight ridge line portion 3 and a straight valley line portion having a height of about 5 mm each in the vertical direction (total height about 10 mm) as shown in FIGS. As shown in the drawings, the ridgeline portions 3 do not sink into the back surface of the tatami mat under the normal tatami mat load, and are alternately parallel and at the same height with a projecting pitch of about 10 mm, for example. Such a cross-sectional shape is approximately sinusoidal and heat-softened and then cooled and hardened to retain the shape, so that the corrugated plate can be ventilated in all directions with a total height of about 10 mm and a thickness of about 0.5 mm. Board 5 is made.

  Thereafter, the multi-row ridgeline portions 3 in the perforated corrugated plate 5 are non-stretchable and have a slight rigidity that the touch is stiff and thick with a thickness of about 0.5 to 1 mm, such as a nonwoven fabric made of plastic fiber. The air-permeable nonwoven fabric 6 is stretched over and polymerized to bridge the ridge line portions 3 with the air-permeable nonwoven fabric 6, and this bridging state is maintained.

  Next, the multiple ridge line portions 3 and the breathable nonwoven fabric 6 in the bridging portion 7 are respectively heated and pressed by a general high-frequency welding sewing machine or a heat press welding machine. 6 can be fixed at once by the cooling and solidification welding force after heating and melting, and the plane contour of the tatami mat in which a single piece of breathable nonwoven fabric 6 is firmly and uniformly bridged between a large number of ridge line portions 3 by the fixing portions 8. The corrugated porous material 9 as shown in FIG. 2 and FIG.

  Since the corrugated porous ventilation material 9 according to the present invention has the above-described configuration, the ventilation material 9 is laid on a sealed floor surface 10 on which a veneer plywood as shown in FIG. When the tatami 11 is laid on top, the normal tatami mat load from the back surface of the tatami is vertically applied to the multi-row ridgeline portions 3 and the valley line portions 4, and mainly the ridgeline portions 3 and the valley line portions 4. In addition to supporting the tatami 11 with this support force, each ridge line part 3 and the valley line part 4 have an expanding force in a direction that separates the ridge line parts 3 and the valley line parts 4 from each other. Each ridge line portion 3 and valley line portion 4 receive a pressing force in a direction in which they are crushed and bent.

  However, the widening distance between the ridge line portions 3 and the valley line portions 4 due to the expansion force is stretched between the ridge line portions 3 of the multiple rows as shown in FIG. 2 and FIG. Each of the ridge line portions 3 and the valley line portions that have received the normal tatami mat load can be reliably prevented by the tension of the non-stretchable air-permeable nonwoven fabric 6 and the ridge line portions 3 and the valley line portions 4 are not separated from each other. It was possible to reliably prevent the crushing and bending of 4 and the bending.

  Therefore, even if the normal tatami mat load as shown in FIG. 1 is applied to the ridge line portions 3 and the valley line portions 4 of the multi-row, the multiple ridge line portions 3 and valley line portions 4 are not crushed, do not bend, and do not bend. The corrugated porous ventilation material 9 according to the present invention can reliably maintain the omnidirectional ventilation space 13 possessed by the ventilation material even when used under the tatami mat as shown in FIG. Since the moisture effect can be maximized and moisture under the tatami mat can be dissipated indoors, it has become possible to cope with the current living environment where the airtightness of houses has advanced.

  However, as in the invention described in claim 2 according to the present invention, when the tatami 11 is laid as shown in FIG. 1 on the non-stretchable breathable nonwoven fabric 6 in the corrugated porous breathable material 9 laid on the floor surface, Since the pressing force due to the load of the tatami back surface 12 is applied to the nonwoven fabric 6 between the ridge line portions 3 in the multi-row, the tension of the nonwoven fabric 6 between the ridge line portions 3 increases, and this tension increases. Even the non-woven fabric 6 can support the back surface 12 of the tatami mat together with the ventilation material 9.

  Since the increased tension of the nonwoven fabric 6 simultaneously with the support of the tatami back surface 12 becomes a force for pulling the ridge line portions 3 in multiple rows together, the spreading force between the ridge line portions 3 as described above can be canceled out. In addition, since the expansion and separation between the ridge line portions 3 and between the valley line portions 4 can be more reliably prevented, the crushing and bending can be more reliably prevented, and the increased tension of the nonwoven fabric 6 The biting of the tatami back surface 12 with respect to each ridgeline portion 3 of the row could be further reduced.

  In the case of using a common tatami mat 11 having a thickness of about 60 mm for the tatami mat 11, the height of the turning edge and the height of the sill in the building Japanese-style room or the like is the total height (about 10 mm) of the corrugated porous ventilation material 9. Just build as high as you can.

  Of course, the present invention can be applied not only to the above-mentioned closed floor surface but also to a ventilation floor surface having a general ventilation gap currently used in a wooden single-family house or the like.

DESCRIPTION OF SYMBOLS 1 ... Ventilation hole 2 ... Perforated plate 3 ... Ridge line part 4 ... Valley line part 5 ... Porous corrugated sheet 6 ... Ventilation nonwoven fabric 7 ... Bridge part 8 ... Adhering part 9 ... Corrugated porous ventilation material 10 ... Sealed floor surface (ventilation floor surface) )
11 ... Tatami 12 ... Tatami back surface 13

Claims (2)

  A perforated corrugated plate in which a large number of ridge line portions and trough line portions are formed in multiple rows alternately in parallel and at the same height is prepared, and a non-stretchable breathable non-woven fabric is polymerized and fixed to each ridge line portion of the perforated corrugated plate. In this way, the ridge line portions that are subjected to a normal tatami mat load are prevented from spreading between the ridge line portions by the air permeable nonwoven fabric, and the air permeable material is interposed between the floor surface and the back surface of the tatami mat. The tatami mat laying structure is characterized in that an omnidirectional ventilation space possessed by the corrugated porous ventilation material is formed between the back surface and the floor surface of the tatami mat by laying the tatami mat. A perforated corrugated plate in which a large number of ridge line portions and trough line portions are formed in multiple rows alternately in parallel and at the same height is prepared, and a non-stretchable breathable non-woven fabric is polymerized and fixed to each ridge line portion of the perforated corrugated plate. In this way, the ridge line portions that are subjected to a normal tatami mat load are prevented from spreading between the ridge line portions by the air permeable nonwoven fabric, and the air permeable material is interposed between the floor surface and the back surface of the tatami mat. A tatami mat humidity control laying structure characterized in that an omnidirectional ventilation space possessed by the corrugated porous ventilation material is formed between a back surface and a floor surface of the tatami mat by laying a tatami mat on the vent nonwoven fabric. .

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