JP2012026166A - Wood-based flooring material for floor heating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wood-based flooring material for floor heating, in that no damage in the vicinity of a tongue part occurs during construction such as striking of fixing member such as nails, even if a part of a storage recess storing a heating unit is a wood-based flooring material formed to be adjacent to the tongue part, and swelling of the surface of the flooring material can be restricted.SOLUTION: In a wood-based flooring material 1A for floor heating, a tongue part 12 and a female tongue part 13 are formed on the circumference thereof, and a part of a storage recess 14 storing a heating unit 31 on the rear face 1b of the flooring material is formed at least to be adjacent to the tongue part 12. In the wood-based flooring material 1A, a recessed groove 15A is provided on the tongue part 12 side rather than the storage recess 14 side, and the recessed groove 15A is formed so as to have at least a space 18A in a position near the tongue part 12 of a floor material surface 1a side of the wood-based flooring material 1A rather than a position where the tongue part 12 is formed. An adhesive agent 19 of which specific gravity is larger than that of wood composing the wood-based flooring material 1A is inserted in the recessed groove 15A as at least a part of the space 18A is left.

Description

  The present invention relates to a wooden flooring for floor heating, in which a male part and a female part are formed at the periphery, and a heating element is housed inside from the back side, and in particular, a fixing member such as a nail is used as a wooden flooring. It is related with the wood-type flooring material for floor heating which can be suitably fixed to a floor base surface.

  2. Description of the Related Art Conventionally, it is generally known that floor heating is performed by arranging a heating element such as an electric heater inside a wooden floor material from the back side. In order to connect and lay a plurality of wooden flooring materials on the floor base surface on the periphery of such a wooden flooring material, a female part for fitting to a male part and an adjacent male part is provided. The real part is formed.

  When fixing wooden flooring, including for floor heating, to the floor foundation surface, a fixing member such as a nail is passed through the wooden flooring near the male part from above, and the wooden flooring is attached to the floor foundation surface by the fixing member. It is fixed. The following various flooring materials have been proposed as wooden flooring materials fixed by such fixing members.

  For example, in Patent Document 1, as shown in FIG. 6A, a concave groove is provided at the periphery, and a resin plate material 65 having a strength higher than that of wood of the wooden flooring 6A is inserted into the concave groove and bonded. Thus, there has been proposed a wood-based flooring 6A in which a male part 62A composed of a plate material 65 and a flooring is formed on the periphery.

  As another aspect, Patent Documents 2 and 3 describe a wood system in which a nail groove (notch) 65B is formed in the vicinity of the male part 62B on the floor surface 6a side formed on the periphery. A flooring 6B has been proposed. According to this floor material 6B, when the nail head concave groove (notch) is formed, the nail head of the nail material in the vicinity of the male real part is connected to the female when the male real part and the female real part are connected. There is no direct contact with the real part, and the flatness of the floor surface is maintained well.

Japanese Utility Model Publication No. 7-10182 Japanese Utility Model Publication No. 4-36042 JP 2007-63768 A

  However, in the case of the wooden flooring 6A as shown in FIG. 6A, when the fixing member 5 such as a nail is driven, a part of the wooden flooring 6A and the like are inserted by inserting the fixing member 5 into the flooring. Both the plate members 65 having a specific gravity higher than that of the floor material are pushed to the surface side (the wood is deformed in the thickness direction), and as a result, the floor material surface 6a may swell as shown in FIG. 6A. . In particular, a high specific polymerization board such as an afforestation tree plywood used in recent years has a higher specific gravity than conventional plywood, so it is not easy to absorb such deformation in wood. Therefore, such a swelling appears conspicuously, and this swelling becomes conspicuous when the floor surface 6a is a highly glossy surface.

  In view of such a swelling phenomenon, when a concave groove 65B such as a concave groove for a nail head (notch) similar to that described in Patent Documents 2 and 3 is provided in the wooden flooring 6B for floor heating, It is considered that the concave groove 65B can absorb the deformation of the wood in the thickness direction causing the swelling. However, as shown in FIG. 6B, in the case of the wood floor material 6B for floor heating, one of the housing recesses 64 for housing the heating element 31 such as a PTC heater and the urethane resin foam 34 on the back surface 6b. The part is formed adjacent to the male part 62B. As a result, the accommodating recess 64 and the recessed groove 65B are close to each other, and the strength of the portion between the accommodating recess 64 and the recessed groove 65B is lower than that without the recessed groove 65B. At the time of construction, there is a risk that the floor material will shear and break between the plies near the bottom of the groove 65B.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a woody material in which a part of a housing recess for housing a heating element such as an electric heater is formed adjacent to a male part. Wooden flooring for floor heating that can suppress the swelling of the flooring surface without damaging near the male part during construction such as driving a fixing member such as a nail. Is to provide.

  In order to solve the above-mentioned problems, the inventors have made extensive studies and found that the flooring swells in the surface direction without being damaged in the vicinity of the male part by driving a fixing member such as a nail. In order to suppress, (1) while absorbing the deformation in the thickness direction of the flooring due to the insertion of the fixing member, (2) it was important to mechanically reinforce the easily damaged part . From such a point of view, the inventors focused on the specific gravity (density) of the material to be reinforced, and according to the relative relationship between the specific gravity of the wood constituting the flooring and the specific gravity of the material to be reinforced ( It was newly found that there is an optimal structure that satisfies 1) and (2) at the same time.

  The present invention is based on the above-mentioned new knowledge of the inventors, and the wooden flooring for floor heating according to the first invention has a male part and a female part formed on the periphery, and a back surface. Is a wooden flooring for floor heating in which a part of the housing recess for housing the heating element is formed adjacent to at least the male part, and the wooden flooring has the above-mentioned housing recess than the housing recess. A groove is provided on the male part side, and the groove has at least a space at a position near the male part on the surface side of the wooden floor material from the position where the male part is formed. A material having a specific gravity greater than that of the wood constituting the wooden floor material is inserted in the concave groove so as to leave at least a part of the space. To do.

  ADVANTAGE OF THE INVENTION According to this invention, the deformation | transformation of the thickness direction of a flooring by driving | running | working of fixing members, such as a nail, to a concave groove is absorbed in the remaining space, and the swelling of the flooring surface can be suppressed. In addition, by inserting a material with high specific gravity into the groove, the strength of the wood near the groove is locally improved, so that damage to the flooring starting from the groove due to driving of a fixing member such as a nail is suppressed. can do. Here, in the present invention, “a material having a specific gravity greater than that of the wood constituting the wooden floor material is inserted so as to leave at least a part of the space” means from above the male part. From the wood constituting the wooden floor material, leaving at least part of the space so as to absorb the deformation in the thickness direction of the wooden floor material that occurs when a fixing member such as a nail is driven into the wooden floor material Means that a material having a large specific gravity is inserted.

  Examples of such a material having a large specific gravity include a metal material and a polymer resin material, and the material is not particularly limited as long as it can reinforce wood near the groove. . However, as a more preferable aspect, the material having a large specific gravity is an adhesive having a specific gravity at the time of curing larger than that of the wood, and the adhesive is inserted into the concave groove and cured. .

  According to this aspect, the adhesive is inserted into the concave groove, the adhesive is impregnated from the wall surface of the concave groove into the wall portion of the wood, and then cured, so that the adhesiveness between the adhesive and the wood is improved. Not only can the wall part including the wall surface of the groove of the wood be reinforced.

  Furthermore, as an aspect of the grooved structure of the wooden floor material according to the first invention, the groove is more preferably formed along the peripheral edge adjacent to the male part. That is, according to this aspect, the concave groove is a peripheral edge (on the male part on the floor material surface side) located near the male part on the surface side of the wooden floor material from the position where the male part is formed. (Adjacent peripheral edge). Thereby, a fixing member can be driven in using this concave groove, and a wooden flooring can be fixed to a floor ground surface.

  In the case of such a concave groove, the insertion position of the material having a large specific gravity is not particularly limited as long as a part of the space remains in the concave groove. However, as a first aspect, it is more preferable that the material having a large specific gravity is coated on the groove inner surface of at least the bottom of the concave groove. Accordingly, the bottom of the groove can be reinforced with a material having a higher strength than wood, and shear failure of the bottom of the groove due to driving of the fixing member into the groove can be prevented.

  Further, as a second aspect, a part of the concave groove formed along the peripheral edge allows a fixing member to penetrate the wooden floor material, and fixes the wooden floor material to the floor base surface. The recessed groove is filled with a material having a large specific gravity so as to fill the recessed groove other than the fixed region while leaving at least a part of the space formed in the fixed region. More preferably.

  According to this aspect, in the fixed region, by leaving at least a part of the space, the specific gravity is increased so as to suppress the swelling of the floor material surface due to the driving of the fixing member and to fill the entire inner space of the other groove. Since a large material is filled, deformation of the bottom of the groove due to the breakage of the groove in the fixed region can be restricted, and the strength of the wood can be improved. Even more preferably, a material having a large specific gravity may be coated on at least the bottom surface of the groove so as to leave a part of the space in the fixed region. Thereby, the shear fracture | rupture of the bottom part of the ditch | groove by the nailing to a ditch | groove can be prevented more reliably.

  Moreover, as another aspect of the grooved structure of the wooden flooring according to the first invention, it is more preferable that the groove is formed from the back surface of the wooden flooring to the surface side. That is, the concave groove in this aspect is a groove formed along the thickness direction from the back surface to the position on the surface side of the wooden floor material from the position where the male part is formed. Due to the space of the groove, deformation along the thickness direction of the flooring due to the driving of the fixing member can be absorbed.

  Furthermore, if a material with a large specific gravity is inserted into such a groove so that a space remains in the groove, the insertion position is not particularly limited. However, as a more preferable aspect, the material having a large specific gravity is inserted at a position on the back surface side so that the groove inner surfaces facing the concave grooves are connected. According to this aspect, by inserting a material having a large specific gravity (a material having higher strength than the flooring material) into the position on the back surface side, the deformation of the concave groove due to the driving of the fixing member is suppressed, and the wooden flooring material The rigidity of can be increased. Moreover, the deformation | transformation of the wood along the thickness direction of a flooring is absorbed by the space of the ditch | groove formed along the thickness direction.

  In the wooden flooring for floor heating according to the second invention, a male part and a female part are formed on the periphery, and at least a part of the housing recess for housing the heating element on the back surface is the male part. Is a wooden flooring for floor heating formed adjacent to the concave portion, and a concave groove is provided on the male part side of the housing concave part, and the male part is formed in the concave groove. It is formed so as to have at least a space at a position near the male part on the surface side of the wooden floor material than the position, and the recessed groove is filled with the recessed groove, A material having a specific gravity smaller than that of the wood constituting the wood floor material is filled.

  ADVANTAGE OF THE INVENTION According to this invention, the deformation | transformation of the thickness direction of a flooring material by the driving | running | working of fixing members, such as a nail, to a concave groove can be absorbed with a material with small specific gravity, and the swelling of the flooring material surface can be suppressed. Moreover, since the groove is filled with such a material, deformation of the groove itself due to driving of a fixing member such as a nail is suppressed, so that the shearing failure of the flooring starting from the groove can be prevented. it can.

  Examples of such a material having a small specific gravity include a polymer resin material and the like, and can reinforce the wood in the vicinity of the ditch and absorb the deformation in the thickness direction of the flooring. In particular, the material is not limited. However, as a more preferable aspect, the material having a small specific gravity is an adhesive having a specific gravity at the time of curing smaller than that of the wood, and the adhesive is filled in the concave groove and cured. Yes.

  According to this aspect, the adhesive is inserted into the concave groove, the adhesive is impregnated into the wood from the wall surface of the concave groove, and then dried and cured. In addition to the improvement, it is possible to prevent a shear failure of the floor material starting from the concave groove due to the driving of the fixing member into the concave groove.

  Furthermore, as an aspect of the grooved structure of the wooden floor material according to the second invention, the groove is more preferably formed along the peripheral edge adjacent to the male part. That is, according to this aspect, this ditch | groove is formed in the periphery adjacent to the male part by the side of floor material surface side.

  Furthermore, as another aspect of the grooved structure of the wooden floor material according to the second invention, it is more preferable that the groove is formed from the back surface toward the front surface side. That is, this concave groove is a groove formed along the thickness direction from the back surface to the position on the surface side of the wooden floor material from the position where the male part is formed. Therefore, the deformation along the thickness direction of the flooring due to the driving of the fixing member can be absorbed by the material having a small specific gravity filled in the concave groove. Thereby, the swelling of the floor material surface can be suppressed.

  According to a third aspect of the present invention, there is provided a wooden floor material for floor heating, in which a male part and a female part are formed on the periphery, and at least a part of the housing recess for housing the heating element is provided on the back surface. Is a wooden flooring for floor heating formed adjacent to the concave portion, and a concave groove is provided on the male part side of the housing concave part, and the male part is formed in the concave groove. It is formed from the back surface to the front surface side so as to have at least a space at a position near the male part on the front surface side of the wooden floor material than the position, and in the concave groove, In order to leave at least the space, a material having the same specific gravity and specific gravity of the wood constituting the wooden floor material is inserted at a position on the back surface side.

  According to the present invention, the deformation in the thickness direction of the floor material due to the driving of a fixing member such as a nail into the concave groove is absorbed by a part of the space formed along the thickness direction, and the surface of the floor material is swollen. Can be suppressed. In addition, by inserting a material with the same specific gravity and specific gravity of the wood that constitutes the wooden floor material into the position on the back side, the deformation of the concave groove due to the driving of the fixing member is suppressed, and the rigidity of the wooden floor material is increased. Can be increased.

  Even if a part of the housing recess that houses the heating element such as an electric heater is a wooden flooring formed adjacent to the male solid part, The swelling of the floor material surface can be suppressed without being damaged near the real part.

It is a figure explaining the wooden flooring for floor heating concerning embodiment of 1st invention, (a) is a typical perspective view of a wooden flooring, (b) is A of (a). FIG. It is a figure explaining the wooden flooring for floor heating concerning another embodiment of the 1st invention, (a) is a typical perspective view of a wooden flooring, (b) is (a). FIG. 4B is a cross-sectional view taken along the line B-B of FIG. It is a figure explaining the wooden type flooring for floor heating which concerns on another another embodiment of 1st invention, (a) is a typical perspective view of a wooden type flooring, (b) is (a It is a DD sectional view taken on the line. It is a figure explaining the wooden flooring for floor heating concerning embodiment of 2nd invention, (a) is a typical perspective view of a wooden flooring, (b) is E of (a). FIG. It is a figure explaining the wooden flooring which concerns on another embodiment of 2nd invention, (a) is a typical perspective view of a wooden flooring, (b) is FF of (a). FIG. It is typical sectional drawing of the conventional wood type flooring, (a) The figure for demonstrating the swelling of the flooring surface, (b) is a figure for demonstrating the damage state of the male-seated part vicinity.

  Several embodiments of the present invention are described below with reference to the drawings. FIG. 1 is a diagram for explaining a wooden flooring for floor heating according to an embodiment of the first invention, (a) is a schematic perspective view of a wooden flooring, and (b) is ( It is AA arrow sectional drawing of a).

  The wooden flooring 1A according to the present embodiment is a flooring for floor heating, and is made of afforested wood plywood (high-specific polymerization board) that uses eucalyptus or the like as a raw material. As shown in FIGS. 1 (a) and 1 (b), a decorative material 11 is provided on the flooring surface 1a of the wooden flooring 1A, and a male part 12 and a female part 13 are provided on the periphery. Is formed. Further, on the floor material back surface 1b of the wooden floor material 1A, a rectangular accommodating recess 14 is provided adjacent to the male real part 12 and the female real part 13 so as to leave the male real part 12 and the female real part 13. Is formed.

  In the housing recess 14, an integrally molded product in which a soaking sheet 32 is attached to the upper surface of a planar PTC heater (heating element) 31 with male and female connectors and a urethane resin foam (heat insulating material) 34 is integrally formed on the lower surface thereof. Is housed. The integrally molded product is fitted to the side wall of the housing recess 14 and bonded to the bottom surface of the housing recess 14 with an adhesive. In this way, the electric integrated floor heating floor material is configured.

  Here, in the wooden flooring 1A, along the periphery of the wooden flooring 1A adjacent to the male solid part 12 in the longitudinal and short directions in the horizontal direction on the male solid part 12 side with respect to the housing recess 14. A concave groove 15A is provided. More specifically, the concave groove 15A is located closer to the male solid part 12 on the floor material surface 1a side of the wooden flooring 1A than the position where the male real part 12 is formed (male on the floor material surface 1a side). It is formed so as to have at least a space 18 </ b> A on the periphery adjacent to the real part 12.

  Then, the adhesive 19 is inserted and cured in the concave groove 15A so as to leave at least a part of the space 18A. More specifically, the adhesive 19 is an adhesive having a specific gravity at the time of curing larger than the specific gravity of the wood constituting the wooden flooring 1A, and is coated on at least the groove inner surface 15b of the bottom 15a in the concave groove 15A. ing.

As such an adhesive 19, among general adhesives, an adhesive having high adhesive strength, elasticity, and low cure shrinkage is preferable. (1) One-component polyurethane adhesive, Examples include an adhesive having a function of chemically reacting with moisture such as a silicone-based adhesive, and (2) a hot-melt adhesive such as a polyamide-based adhesive and an EVA-based adhesive. Here, for example, the specific gravity of the polyurethane adhesive at the time of curing is 1.51, the specific gravity of the wood of the high specific polymerization plate is 0.6 to 0.9, and the specific gravity of the adhesive at the time of curing is About twice as large as the specific gravity of wood. Furthermore, shear strength of the polyurethane adhesive during curing is 5-6 N / mm ^2, the shear strength between the plies constituting the wood flooring 1A is a 0.7 N / mm ² or more, The shear strength of the adhesive during curing is about 8 times greater than the shear strength of wood.

  Further, the adhesive 19 can absorb the deformation in the thickness direction of the wooden flooring 1A when the space 18A of the concave groove 15A drives the fixing member 5 such as a nail into the wooden flooring 1A. Has been inserted to the extent.

  Using the wood-based flooring 1A configured as described above, the wood-based flooring 1A is laid on the floor base surface C, and the fixing member 5 is driven into the wood-based flooring 1A using the concave grooves 15A. At this time, the deformation in the thickness direction of the floor material that occurs when the fixing member 5 is driven into the concave groove 15A can be absorbed by a part of the space 18A, and the swelling of the floor material surface 1a can be suppressed. Further, by covering the groove inner surface 15b of the bottom portion 15a with an adhesive having a large specific gravity in the groove 15A, the strength of the wood near the groove 15A is locally improved. It is possible to suppress the shear failure of the flooring material as the starting point.

  Further, at the time of manufacturing, the adhesive 19 is inserted into the concave groove 15A, and the adhesive is impregnated into the wood from the wall surface of the concave groove 15A. Not only can the adhesion of the wood be improved, but also the wall portion including the wall surface of the recessed groove 15A of the wood can be reinforced.

  FIG. 2 is a diagram illustrating a floor heating wood floor according to another embodiment of the first invention, (a) is a schematic perspective view of a wood floor, (b) (A) is a BB line arrow sectional view, (c) is a CC line arrow sectional view of (a).

  This embodiment is different from the embodiment shown in FIG. 1 in the location where the adhesive is inserted into the groove 15A. Therefore, in FIG. 2, the same reference numerals are given to the components having the same functions, and detailed description thereof will be omitted.

  As shown in FIGS. 2 (a) to 2 (c), the wooden flooring 1B according to the present embodiment includes a recessed groove 15A formed along the periphery, a fixed region 15c, and other non-fixed regions 15d. The adhesive insertion position is changed according to these regions 15c and 15d. Here, the fixing region 15c is a region for fixing the wooden floor material 1B to the floor base surface C by passing the fixing member 5 through the wooden floor material 1B from the inside of the concave groove 15A.

  Then, as shown in FIG. 2 (b), while leaving all the space 18A formed in the fixed region 15c, as shown in FIG. 2 (c), in the recessed groove of the non-fixed region (region other than the fixed region) 15d. An adhesive 19 is filled in the concave groove so as to fill the entire interior space.

  In this way, by leaving all the space 18A in the fixed region 15c, it is possible to suppress the swelling of the floor surface 1a due to the driving of the fixing member 5. Further, since the adhesive 19 is filled so as to fill the entire internal space of the groove 15A in the non-fixed region 15d, the strength of the wood in the groove can be improved. In the present embodiment, all the space 18A formed in the fixed region 15c is left, but as shown in FIG. 1B, the adhesive 19 is applied to the groove inner surface at least at the bottom of the concave groove 15A in the fixed region 15c. It may be coated.

  FIG. 3 is a diagram for explaining a wooden flooring for floor heating according to still another embodiment of the first invention, (a) is a schematic perspective view of a wooden flooring, and (b). These are DD sectional view taken on the line of (a).

  This embodiment is different from the embodiment shown in FIG. 1 in the structure of the concave groove and the place where the adhesive is inserted. Therefore, in FIG. 3, the same reference numerals are given to components having the same functions, and detailed description thereof is omitted.

  As shown in FIGS. 3A and 3B, the concave groove 15B of the present embodiment is formed from the floor material back surface 1b of the wooden floor material 1C toward the floor material surface 1a. That is, this concave groove 15B is a groove formed along the thickness direction from the floor material back surface 1b to the position on the floor material surface 1a side of the wooden floor material 1C from the position where the male part 12 is formed. It is. Furthermore, the adhesive 19 is inserted at a position on the floor material rear surface 1b side so that the space 18B remains in the groove 15B and the groove inner surface 15e facing the groove 15B is connected.

  Using the wooden flooring 1C configured in this way, the wooden flooring 1C is laid on the floor base surface C, and the fixing member 5 is placed on the wooden flooring 1C so that the fixing member 5 crosses the recessed groove 15B. And the fixing member 5 is penetrated. At this time, the deformation along the thickness direction of the wooden flooring 1C is absorbed by the space 18B of the concave groove 15B formed along the thickness direction. Further, by inserting an adhesive having a large specific gravity (a material stronger than wood) into a position on the floor material back surface 1b side, the deformation of the concave groove due to the driving of the fixing member 5 is suppressed, and the wooden floor material The rigidity of 1C can be increased.

  FIG. 4 is a diagram for explaining a wooden flooring for floor heating according to an embodiment of the second invention, (a) is a schematic perspective view of a wooden flooring, and (b) is ( It is an EE arrow directional cross-sectional view of a).

  This embodiment is different from the embodiment shown in FIG. 1 in the specific gravity of the adhesive and the location where the adhesive is inserted. Therefore, in FIG. 4, the same reference numerals are given to configurations having the same functions, and detailed descriptions thereof are omitted.

  In the concave groove 15A of the wood floor material 2A for floor heating according to the present embodiment, the specific gravity at the time of curing is higher than that of the wood constituting the wooden floor material 2A so as to fill the entire internal space of the concave groove 15A. A small adhesive 29 is filled.

  As such an adhesive 29, among general adhesives, an adhesive having strong adhesive strength, elasticity, and low curing shrinkage is preferable, and an adhesive of foamed resin can be exemplified. Examples of the foamed resin include a polyurethane resin, an ethylene vinyl alcohol resin, and a polyethylene resin. Here, for example, the specific gravity of the foamed polyurethane adhesive at the time of curing is made smaller than 0.6 to 0.9 of the specific gravity of the wood of the high specific polymerization plate by adjusting the expansion ratio (specific gravity: 0.3 to 0.5).

  According to the wooden flooring 2A for floor heating according to the present embodiment, the adhesive 29 having a small specific gravity absorbs the deformation in the thickness direction of the flooring due to the driving of a fixing member such as a nail into the concave groove 15A. Moreover, the swelling of the floor material surface can be suppressed. Moreover, since the deformation of the concave groove 15A itself is suppressed by filling the concave groove 15A with the adhesive 29, the floor material is subjected to shear failure starting from the concave groove 15A due to the driving of the fixing member 5 such as a nail. Can be prevented. Also, an adhesive is inserted into the groove 15A, the adhesive is impregnated into the wood from the wall surface of the groove 15A, and then dried and cured, so that the adhesive 29 and the wood are improved in adhesion. Can be made.

  FIG. 5 is a diagram for explaining a wooden flooring for floor heating according to another embodiment of the second invention, (a) is a schematic perspective view of a wooden flooring, (b) It is FF arrow directional cross-sectional view of (a).

  This embodiment is different from the embodiment shown in FIG. 4 in the structure of the groove and the location where the adhesive is inserted. Therefore, in FIG. 4, the same reference numerals are given to configurations having the same functions, and detailed descriptions thereof are omitted.

  As shown in FIGS. 5A and 5B, the concave groove 15B of the present embodiment is formed from the floor material back surface 1b of the wood-based floor material 2B toward the floor material surface 1a side. That is, this concave groove 15B is a groove formed along the thickness direction from the floor material back surface 1b to the position on the floor material surface 1a side of the wooden floor material 2B from the position where the male part 12 is formed. It is. Furthermore, the entire inner space of the concave groove 15B is filled with an adhesive 29 having a specific gravity smaller than that of wood.

  When the fixing member 5 is driven into the wooden floor material 2B as shown in the figure and the fixing member 5 is penetrated through the concave groove 15B, the adhesive filled in the concave groove 15B formed along the thickness direction. The agent 29 can absorb deformation along the thickness direction of the wooden flooring 2B, and can prevent damage near the concave groove 15B. Moreover, since the deformation of the concave groove 15B itself is suppressed by filling the concave groove 15B with the adhesive 29, the floor material is prevented from being damaged due to the concave groove 15B being driven by the fixing member 5 such as a nail. can do.

  Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention described in the claims. Design changes can be made.

  For example, in the embodiment shown in FIG. 2, an adhesive having a specific gravity larger than that of the wood constituting the wooden flooring material is used. However, if damage near the concave groove can be prevented, the second invention is used. Such an adhesive may be used.

  For example, in the embodiment shown in FIG. 3, an adhesive having a specific gravity larger than the specific gravity of the wood constituting the wooden floor material is inserted in the groove so as to leave at least a space. As in the third invention of the present application, in order to leave at least a space, a material having the same specific gravity and specific gravity (for example, the same timber as the wood of the floor material) of the wood constituting the wooden floor material in the groove is provided on the back side. It may be inserted at a position.

  In the present embodiment, the wood floor material for electric floor heating using a PTC heater is exemplified as the heating element housed in the groove, but the wood heating floor system using a hot water pipe as the heating element. Floor material may be used.

1A to 1C: wooden flooring, 1a: flooring surface, 1b: flooring back surface, 2A, 2B ... wooden flooring, 5 ... fixing member, 11: decorative material, 12: male part, 13: female fruit Part, 14: accommodating recess, 15A, 15B: recessed groove, 15a: bottom, 15b: groove inner surface, 15c: fixed region, 15d: non-fixed region, 15e: groove inner surface, 18A, 18B: space, 19: adhesive ( 29: Adhesive (adhesive with lower specific gravity than wood), 31: PTC heater (heating element), 32: Soaking sheet, 34: Urethane resin foam

Claims (12)

A wooden flooring for floor heating, in which a male solid part and a female real part are formed at the periphery, and at least a part of a housing recess for housing a heating element on the back surface is formed adjacent to the male solid part. And
The wooden floor material is provided with a concave groove on the male part side of the housing recess, and the concave groove is located on the surface of the wooden floor material from the position where the male solid part is formed. It is formed to have at least a space at a position near the male part on the side,
A wooden floor for floor heating, wherein a material having a specific gravity greater than that of the wood constituting the wooden floor material is inserted into the groove so as to leave at least a part of the space. Wood.   The material having a large specific gravity is an adhesive having a specific gravity at the time of curing larger than that of the wood, and the adhesive is inserted into the concave groove and cured. Wooden flooring for floor heating described in 1.   The wooden flooring for floor heating according to claim 1 or 2, wherein the concave groove is formed along the peripheral edge adjacent to the male part.   The wooden flooring for floor heating according to claim 3, wherein a material having a large specific gravity is coated on at least the inner surface of the groove at the bottom of the concave groove. A part of the concave groove formed along the peripheral edge includes a fixing region for fixing the wooden floor material to a floor base surface by passing a fixing member through the wooden floor material.
The concave groove is filled with a material having a large specific gravity so as to fill the concave groove other than the fixed region while leaving at least a part of the space formed in the fixed region. The wooden flooring for floor heating according to claim 3 or 4.   The wooden flooring for floor heating according to claim 1 or 2, wherein the concave groove is formed from the back surface toward the front surface side.   The wood-based flooring material for floor heating according to claim 6, wherein the material having a large specific gravity is inserted at a position on the back surface side so that the groove inner surfaces facing each other of the concave grooves are connected. A wooden flooring for floor heating in which a male part and a female part are formed on the periphery, and at least a part of a housing recess for housing the heating element is formed on the back surface adjacent to the male part. There,
The wooden floor material is provided with a concave groove on the male part side of the housing recess, and the concave groove is located on the surface of the wooden floor material from the position where the male solid part is formed. It is formed so as to have at least a space at a position near the male part on the side,
A wooden flooring for floor heating, wherein the concave groove is filled with a material having a specific gravity smaller than that of wood constituting the wooden flooring so as to fill the concave groove.   9. The material having a small specific gravity is an adhesive having a specific gravity at the time of curing smaller than that of the wood, and the adhesive is filled in the concave groove and hardened. Wooden flooring for floor heating described in 1.   The wooden flooring for floor heating according to claim 8 or 9, wherein the concave groove is formed along the peripheral edge adjacent to the upper surface of the male part.   The wooden flooring for floor heating according to claim 8 or 9, wherein the concave groove is formed from the back surface toward the front surface side. A wooden flooring for floor heating in which a male part and a female part are formed on the periphery, and at least a part of a housing recess for housing the heating element is formed on the back surface adjacent to the male part. There,
The wooden floor material is provided with a concave groove on the male part side of the housing recess, and the concave groove is located on the surface of the wooden floor material from the position where the male solid part is formed. It is formed from the back surface toward the surface side so as to have at least a space at a position near the male part on the side,
For floor heating, a material having a specific gravity equivalent to the specific gravity of the wood constituting the wooden floor material is inserted into the concave groove so as to leave at least the space. Wooden flooring.

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