JP2005299170A - Heating double-flooring structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently construct a floor supporting leg on the undersurface of a double-flooring panel by making the thicknesses of the double-flooring panels similar to each other between a heating double-flooring structure for constructing a heating member, and a regular non-heating double-flooring structure adjacent to it. <P>SOLUTION: The heating double-flooring structure 1 is provided. The structure 1 is equipped with a floor base 2, the floor supporting leg 3 on the floor base 2, a sub-floor material 4 on the leg 3, the heating member 5 on the sub-floor material 4, and a floor finishing material 6 on the heating member 5. The structure 1 is heated by the heating member 5. In the structure 1, the heating member 5 is supported by a supporting member 7 under the heating member 5; and the supporting member 7 is composed of a crosslinked molding of at least one kind of material which is selected from a group composed of a rubber and an elastomer, and has a hardness of 60-80 and a surface density of 15-25 kg/m<SP>2</SP>. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention comprises a floor base, a floor support leg on the floor base, a floor base material on the floor support leg, a heating member on the floor base material, and a floor finish on the heating member, The present invention relates to a heating double floor structure heated by a heating member, and more particularly, the present invention relates to a heating double floor structure capable of freely adjusting a height with respect to a non-heating double floor structure.

  For floor heating of ordinary houses such as apartment houses, hot water circulation type floor heating mats using gas, kerosene, electricity and the like as heat sources are used.

  In such a hot water mat for floor heating, a heat insulating material such as polyethylene foam or polystyrene is used as a pipe guide base material, a cross-linked polyethylene pipe for circulating hot water is arranged on the pipe guide base material, and hot water is circulated in the pipe to circulate the floor. The flooring is heated by heating the finishing material.

  For example, there is an example of a conventional hot water mat for floor heating shown in the sectional view of FIG. The hot water mat 201 has a thickness of 12 mm, an aluminum sheet 202 having a thickness of 100 μm is used as a heat radiating member in the surface layer portion, and an olefin resin pipe 203 in which hot water circulates is arranged at 75 mm intervals below the hot water mat 201. A double foam polystyrene-based foam 204 is used, and the foam 204 has a recess 205 for arranging the hot water pipe 203. Furthermore, a 45 mm wide plywood called a small joist 206 is arranged at a 303 mm pitch in consideration of fixing of the finishing material. In this configuration, the foam is considered only for heat insulation, and no consideration is given to sound insulation.

  When such a floor heating system is arranged on a double floor base material, it may be necessary to consider the impact of floor impact noise on the floor base. At that time, a particle board or the like is used as a floor base material, a discarded plywood is placed immediately above it, an asphalt type sound insulation sheet having a thickness of 6 mm or 8 mm is laid thereon, and further on the sound insulation sheet. In addition, a floor impact sound level is usually reduced as a configuration in which a discarded plywood having a thickness of 9 to 12 mm is laid, a floor heating system is provided, and a floor finish is further provided.

  Such an asphalt-based sound insulation sheet has a softening point of around 80 ° C., and when it is in direct contact with the hot water mat for floor heating during operation, it reaches the upper limit of 80 ° C., causing softening deterioration, and the thickness of the sound insulation sheet (that is, the floor It becomes difficult to ensure the flatness of the material, and also causes contact contamination of the warm water mat for floor heating due to softening deterioration and eventually contact contamination of the crosslinked polyethylene pipe. For this reason, for the purpose of eliminating such obstacles, a discarded laminated board having a thickness of 9 to 12 mm is usually laid.

  For example, there is an example of a conventional floor heating structure shown in the sectional view of FIG. The hot water mat 211 is usually laid with an asphalt-based high-density sound insulating material 217 for the purpose of providing sound insulation. In this case, the asphalt-based sound insulating material 217 is not considered at all in terms of heat resistance, and is used when operating floor heating. The asphalt-based sound insulating material 217 has a property of melting when heated, and its melting point is in the vicinity of 80 ° C. Therefore, when the asphalt-based sound insulating material 217 is laid directly under the mat 211, the sound insulating material 217 is melted by heating of the floor heating, causing contact contamination to the foam 214, and further, the sound insulating material melted in the pipe 213. May penetrate and cause deterioration of the pipe 213. As a method for preventing this, when the sound insulating material 217 is laid and the mat 211 is laid, a 12 mm plywood 218 is usually interposed between the sound insulating material 217 and the mat 211 in order to eliminate the above-mentioned factors. Sound insulation and floor heating safety are ensured. In FIG. 6, the aluminum sheet 212, the foam 214, the recess 215, the small joist 216, and the like are the same as those in FIG.

  Patent literatures and the like related to such prior art have been investigated, but to the best of the present applicant's knowledge, such prior art was not considered to be a known literature invention. Therefore, there is no prior art document information to be described.

  However, by laying the discarded laminated plywood, the total thickness of the floor material above the floor base material by laminating hot water mats for floor heating (usually a thickness of 12 mm is a general specification) and sound insulation sheets Becomes 37 to 44 mm, that is, a sound insulating sheet (4 to 8 mm) + abandoned laminated board (9 to 12 mm) + a warm water mat (12 mm) + floor warming flooring (12 mm), and the floor height is forced to rise.

  The increase in floor height due to the sound insulation sheet is generally used in living rooms other than floor heating laying locations. Therefore, there is an increase in floor height of 12mm + 9-12mm = 21-24mm, and the barrier-free conditions required for dwelling units are not fully met at present. is there.

  However, in the case of a double floor structure, the height of the floor support legs that support the floor panel of the double floor can be adjusted due to its configuration. That is, the level of the lower surface of the floor base material of the heating double floor structure is adjusted to be lower than that of the non-heating double floor structure, and the rise in the floor finish height is absorbed by the hot water mat for floor heating and the discarded paste. Can be made barrier-free.

  However, although barrier-free can be achieved, the height of the lower surface of the floor base material is different between the non-floor heating part and the floor heating part, and the number of construction steps required to adjust the height of the lower surface of the floor base material increases. In addition, the height of the floor support legs that support the floor base material must be adjusted by the support bolts having different lengths, resulting in an increase in the number of parts and an increase in cost. Furthermore, due to such construction problems, there is a major problem that it is difficult to reliably perform barrier-free in the floor heating section.

  Moreover, although this inventor used the material with a heat insulation characteristic about the conventional floor heating hot water mat, this inventor discovered that this material became obstructed in exhibiting sufficient sound insulation.

  An object of the present invention is to make the thickness of a double floor panel the same between a heating double floor structure for constructing a heating member and a normal non-heating double floor structure adjacent thereto, It is to enable efficient construction of floor support legs on the lower surface of the floor.

The present invention comprises a floor base, a floor support leg on the floor base, a floor base material on the floor support leg, a heating member on the floor base material, and a floor finish on the heating member, A heating double floor structure heated by a heating member, wherein the heating member is supported by a support member under the heating member, and the support member is at least one selected from the group consisting of rubber and elastomer It consists of a crosslinked molded body of the material, and the support member has a hardness of 60 to 80 and a surface density of 15 to 25 kg / m ² , and relates to a heating double floor structure.

  The present invention was obtained from the results of the inventor's diligent study.The support member for a heating member made of a predetermined material is excellent in heat resistance and sound insulation, and has a double floor panel thickness. Based on the knowledge that the floor impact sound level can be stably reduced without increasing.

That is, in the present invention, the supporting member that supports the heating member is a cross-linked molded body made of at least one material selected from the group consisting of rubber and elastomer, and has a hardness of 60 to 80 (measured by a JIS-A rubber hardness meter). The same shall apply hereinafter) and a surface density of 15 to 25 kg / m ² .

  Such a support member can ensure stable suppression of the floor impact sound level without causing a sag with respect to a long-term applied load like an asphalt sound insulation sheet even when heated by warm water or the like.

  Since the support member according to the present invention can stably bear both the heating function and the sound insulation function, not only can the increase in the thickness of the floor panel be suppressed, but it is also very effective in reducing the floor impact sound level. It is effective and is an epoch-making thing that can fully satisfy the ideal barrier-free environment required for a dwelling unit.

  According to the present invention, since the increase in the thickness of the double floor panel of the heating double floor structure is suppressed, it becomes possible to use a floor support leg similar to a normal non-heating double floor structure without constructing a heating member, An extremely stable barrier-free heating double floor structure can be efficiently constructed.

An embodiment for carrying out the present invention will be described.
The heating double floor structure includes a floor base, a floor support leg on the floor base, a floor base material on the floor support leg, a heating member on the floor base material, and a floor finishing material on the heating member.

(1) Floor base The floor base may be used for a normal double floor structure. There are no particular restrictions on the material, shape, structure, etc., and the floor slab is typically made of concrete or the like.

(2) Floor base material and floor finish material It may be used for a normal double floor structure. There is no restriction | limiting in particular in a material, a shape, a structure, etc. A various thing can be used.

(3) Heating member It consists of a heating element that warms the double floor structure. There is no restriction | limiting in particular in a material, a shape, a structure, etc. A various thing can be used. Typically, it may be a heating body such as a heat ray, or at least one heating medium selected from the group consisting of an appropriate liquid and gas, and the heating medium is typically hot water.

  The heating medium is preferably refluxed using an appropriate circulation pipe. As piping, it is necessary to consider the durability against a heating medium. For example, when hot water is used as the heating medium, a crosslinked resin molded pipe, particularly a crosslinked polyethylene pipe can be used as the heating medium pipe.

(3-1) Warm water sheet A heating member can consist of a warm water sheet. The hot water sheet can be composed of a pipe for circulating hot water, a flat heat radiation layer on the upper side of the pipe, and a resin layer on the lower side of the pipe having a recess for housing the pipe.

(3-2) Heat dissipation layer It is interposed between the heating element and the floor finishing material, etc., and promotes heat dissipation from the heating element. Such a heat dissipation layer is not particularly limited in material, shape, structure, and the like, and can be made of various materials. For example, it consists of a metal foil made of aluminum or the like.

(3-3) Resin layer The resin layer is interposed between the heating body and the support member, prevents contact of the heating body with the support member, and serves as a sheet for protecting the heating body. Such a resin layer is not particularly limited in terms of material, shape, structure, etc., and it is sufficient that the heated body can be prevented from being contaminated by a support member such as a crosslinked rubber. The resin layer is preferably made of an olefin elastomer. As the olefin-based elastomer, a polyethylene resin or a polypropylene resin is suitable.

(3-4) Manufacture of hot water sheet As a configuration in which a resin molded pipe cross-linked to a concave portion is arranged between a heat radiation layer such as an aluminum stay and a resin layer having a concave portion, and the resin molded pipe is sandwiched, It is formed. Since the heat dissipation layer and the resin layer hold the resin pipe disposed therein in a fixed position, the heat dissipation layer and the resin layer can be fixed with an adhesive or a pressure sensitive adhesive at a portion excluding the concave portion where the resin pipe is disposed.

  The resin layer of the hot water sheet having the sandwich structure can be obtained by molding a recess in accordance with the recess of the support member by press molding, vacuum molding or the like. It is preferable to make the resin layer as thin as possible. Preferably, in order to minimize the thickness of the floor heating unit, the thickness of the hot water sheet is 0.2 mm to 0.5 mm that can be molded.

(4) Support member It is a member for supporting a heating member from the bottom. Such a support member should have heat resistance to the heating element and sound insulation as described later, and there are no particular restrictions on the material, shape, structure, etc., and various types may be used. In particular, the support member is made of a crosslinked molded body of at least one material selected from the group consisting of rubber and elastomer.

  Such a crosslinked molded article is mainly composed of at least one rubber selected from the group consisting of natural rubber and synthetic rubber, and includes a reinforcing material, a filler, a plasticizer, a softener, an anti-aging agent, an adhesive, a processing aid, It is a rubber composition containing a colorant, a crosslinking agent, a crosslinking aid, etc., or an elastomer composition is mixed by ordinary roll kneading, kneading work using a Banbury mixer, internal mixer, pressure kneader, etc. And it rolls into a sheet form with a two roll or calendar roll, a roller header, an extruder, etc., and makes it the shape which has fixed thickness.

  Such a support member may be a single-layer sheet or a composite-layer sheet in which a plurality of sheets are laminated and integrated. Preferably, the supporting member is a composite layered sheet in which a plurality of sheets are laminated and integrated. The integrated composite layer system support member obtained by such a manufacturing method can further enhance the effect of improving the floor impact sound level.

  The support member can be subjected to primer treatment, frame treatment, ultraviolet treatment, corona discharge treatment, and the like to improve adhesion with a floor base material, a heating member, and the like.

  The support member can have a recess that houses the heating element. Such a recess preferably accommodates the heating medium piping. Further, preferably, the concave portion is a pipe guide portion for arranging the heating medium pipes in a predetermined pattern. Such a support member can be obtained using molding processing equipment such as press molding processing, injection molding processing, and hot air molding processing.

  Such a support member is warmed by the heating body, whereby the floor base material and the floor finishing material can be efficiently heated, and a heating function can be assumed in the floor heating system.

  When considering the thickness of the asphalt sound insulation material (4-8mm) used in the non-floor heating part of general dwelling units, the thickness of the support member is for barrier-free dwelling units and for workability of the double floor structure. The thickness of the heating member plus the thickness of the heating member is preferably within the range of at least ± 1 mm of the thickness of the asphalt sound insulation.

(4-1) surface density supporting member surface density of 15 to 25 kg / ^{m 2,} preferably has a surface density of 18~22kg / ^{m 2.} A support member having a surface density within such a range functions sufficiently as a sound insulating material. If it is less than 15 kg / m < ² >, the improvement effect of a floor impact sound level will become remarkably low. When it exceeds 25 kg / m ² , the ratio of the high specific gravity filling material in the compounded material such as rubber becomes large, the heat resistance is inferior, and it may not be used. Here, the surface density refers to the weight per unit area, that is, (specific gravity ^ita × thickness × length × width) = surface density. For example, if the specific gravity is 2.0, the thickness is 9 mm, the length is 1000 mm, and the width is 1000 mm, the surface density is 2.0 ×. 9 cm × 100 cm × 100 cm / 1000 = 18 kg / m ²

(4-2) Specific gravity The support member preferably has a specific gravity of 1.8 to 2.7, more preferably 2.0 to 2.5. When the specific gravity is less than 1.8, it is difficult to recognize the effect of reducing floor impact sound. When the specific gravity exceeds 2.7, it is inferior in heat resistance for floor heating and is difficult to use.

(4-3) Rubber hardness The support member has a hardness of 60 to 80, preferably 65 to 75. When the hardness is higher than 80, due to the high hardness, the reduction effect of the high sound range may be deteriorated at the light floor impact sound level. If the hardness is lower than 60, the reduction effect may be deteriorated at the heavy floor impact sound level due to insufficient rigidity. When the hardness of the support member is in the range of 60 to 80, the effect is effectively exerted in a balanced manner for reducing the weight and light floor impact sound level.

  The material and physical properties of the support member according to the present invention will be developed as a result of intensive investigation of the structure of the heating double floor structure, targeting an asphalt sound insulation material with a thickness of 8 mm, which is most effective in reducing the floor impact sound level. It has come.

(5) Floor support leg On the floor base, the floor panel of the double floor which consists of the above-mentioned floor base material, a support member, a heating member, a floor finishing material, etc. is supported from the bottom.

  The floor support leg typically includes a rubber base in contact with the floor base, a support bar on the rubber base, and a plate-like material on the support bar. A plurality of floor support legs are used, and each plate member serves to support the double floor panel at a predetermined height.

  The support bar can be made of a bolt, and the plate-like member can have a nut that is screwed with the support bolt. The plate-like material may be embedded in a floor base material or the like.

(6) Heating double floor structure As described above, if a double floor panel for heating composed of a floor base material, a support member, a heating member, a floor finishing material, etc. is used, the thickness of the double floor panel is heated. It can be the same as that of a double floor panel of a non-heating double floor structure having no members.

  Such a heating double floor panel can have the same level of the upper surface of the double floor panel, for example, the upper surface of the floor finish, between adjacent non-heating double floor structures. In addition, the level of the lower surface of the double floor panel, for example, the lower surface of the floor base material can be made the same.

  Thereby, the double floor panel for heating and the normal double floor panel can be similarly constructed using the same floor support leg, and there is no need to adjust the floor base material level.

  Therefore, according to the heating double floor structure of the present invention, in the structure adjacent to the non-heating double floor structure, the heterogeneity of the soundproof performance due to the difference in the thickness of the double floor panel and the floor support leg can be suppressed. At the same time, a more reliable barrier-free operation can be achieved very efficiently.

The present invention will be described in more detail with reference to the drawings.
FIG. 1 is a sectional view showing an example of a heating double floor structure of the present invention. FIG. 2 is a sectional view of a heating double floor structure of another example of the present invention. FIG. 3 is a perspective view partially showing a configuration of an example hot water sheet according to the present invention. FIG. 4 is a perspective view showing a state in which the hot water sheet and the support member are combined.

  As shown in the right part of FIG. 1, the heating double floor structure 1 of the example of the present invention includes a floor base 2, a floor support leg 3 on the floor base 2, a floor base material 4 on the floor support leg 3, and a floor below. A heating member 5 on the ground material 4 and a floor finishing material 6 on the heating member 5 are provided, and the heating double floor structure 1 is heated by the heating member 5.

In the heating double floor structure 1, the heating member 5 is supported by a support member 7 therebelow, and the support member 7 is formed of a crosslinked molded body of at least one material selected from the group consisting of rubber and elastomer. The support member 7 has a hardness of 60 to 80 and an areal density of 15 to 25 kg / m ² .

In the right part of FIG. 2, a heating double floor structure 11 of another example of the present invention is shown.
The heating double floor structure 11 differs from the heating double floor structure 1 of FIG. 1 mainly in the type and arrangement of floor support legs. The floor base 12, the floor base material 14, the heating member 15, the floor finish 16 and the support member 17 are the same as those in FIG.

  In the heating double floor structure 1, the floor support leg 3 supports the joint 4A of the floor base material 4, whereas in the heating double floor structure 11, the floor support leg 13 connects the floor base material 14 to the seam. 14A, the floor support leg 13 is different in that the support bolt 13A is fixed to a nut 13D embedded in the lowermost floor base material 14B.

1 and 2, the heating members 5 and 15 can be those shown in detail in FIG.
The heating member 25 as shown in FIG. 3 is a hot water sheet having a sandwich structure in which a pipe 25A is sandwiched between a lower resin layer 25B and an upper heat radiation layer 25C. A resin layer 25B (for example, a layer having a thickness of 0.3 mm made of a crosslinked resin) is disposed below the pipe 25A, and the pipe 25A is accommodated in the recess 25D of the resin layer 25B. On the surface of the resin layer 25B, a heat dissipation layer 25C (for example, a layer having a thickness of 0.3 mm made of a metal foil such as an aluminum stay) is disposed. As the pipe 25A, a resin molded pipe (outer diameter 7.0 mm) through which hot water circulates can be used.

1 and 2, the support members 7 and 17 may be those shown in detail in FIG.
The support member 27 as shown in FIG. 4 has a concave portion 27A in which the heating member 25 formed as shown in FIG. 3 is arranged on the upper portion, and a convex portion by the piping 25A of the resin layer 25B of the heating member 25 can be laid. The support member 27 can be obtained by crosslinking and molding a predetermined sound insulating rubber composition by press molding, vacuum molding or the like.

  The heating member 25 and the support member 27 as shown in FIG. 3 can be used in combination as shown in detail in FIG.

  The present inventor exhibits a sufficient floor impact sound level buffering and reduction effect, and also has a floor heating function, and even when considering a sound insulation design of a floor heating part and a non-floor heating part in a general dwelling unit, We have developed an epoch-making double heating floor structure that can perform barrier-free floor finishing without causing a level difference between the floor heating part and the non-floor heating part.

Hereinafter, the present invention will be described in more detail with reference to the drawings.
(Example 1)
A heating double floor structure as shown in FIG. 1 is constructed.
FIG. 1 shows a cross-sectional configuration diagram of a double floor structure in which a heating double floor structure 1 according to the present invention on the right side and a non-heating double floor structure 101 on the left side are arranged in parallel.

First, the double floor configuration of the non-floor heating unit will be described.
A floor support leg 3 for soundproofing is arranged on the surface of the floor base 2 made of slab. The floor support leg 3 includes a support rod 3A made of steel support bolts, a rubber base 3B, and a plate-like body 3C. The support bolts are screwed into a steel receiving nut 3D to support the floor base material 4 under the floor. Adjust the height. The plate-like body 3C is made of a normal plywood having a thickness of 15 mm × 98 mm square, and a nut 3D is driven therein. In this way, a double floor support block is formed.

  A plurality of support blocks are used to connect and fix the particle board as a base member. On the plywood part of this support block, a particle board 4B, which is a base panel having a thickness of 20 mm, is used as a floor base material, and a discarded plywood 4C having a thickness of 12 mm is laid thereon. A specific gravity sound insulating material 109 is laid. A veneer-coated veneer with a thickness of 12 mm is arranged on the floor finish 6 to constitute a double floor of a non-floor heating unit.

  In the heating double floor structure 1, the particle board 4B and the discarded plywood 4C are used as a common floor base with the non-floor heating section, and the heating member 5 and the support as shown in FIG. The member 7 is laid in parallel with the asphalt sound insulation material 109 with a total thickness of 9 mm.

  In the floor heating part, the finishing material 6 common to the non-floor heating part can be arranged in parallel so as to overlap the non-floor heating part. A double floor structure that is barrier-free without a step between the floor heating unit and the non-floor heating unit can be formed extremely efficiently.

(Example 2)
A heating double floor structure 11 as shown in FIG. 2 is constructed.
FIG. 2 shows a double floor structure having a heating double floor structure 11 on the right side and a non-heating double floor structure 111 on the left side in parallel, and is a table type in which the lowermost floor base material is independent. .

  First, a floor support leg 13 for soundproofing is arranged on the floor base 12 as a double floor configuration of the non-floor heating unit. The floor support leg 13 includes a support bar 13A made of a steel support bolt, a rubber base 13B, and a steel nut 13C, and adjusts the underfloor support height by screwing the support bolt and the steel nut. The nut 13 </ b> C is placed on a particle board 14 </ b> B, which is a base panel having a thickness of 20 mm, which becomes the floor base material 14, and the particle board 14 </ b> B forms the lowest layer of the floor base material.

  Each of the floor base materials 14B is independent, but the floor base material 14 is connected and fixed by a throwing tension member 14C directly above the floor base material 14B.

  A normal plywood 14C, which is a 12 mm thick discard member, is laid, and an asphalt sound insulating material 119 having a thickness of 8 mm is further laid. A veneer-coated veneer with a thickness of 12 mm is arranged on the floor finish 16 to constitute a double floor of a non-floor heating unit.

  As the floor heating part, the lower layer part from the particle board 4B and the discarded plywood 14C is used as a common floor base with the non-floor heating part, and the heating member 15 and the support member as shown in FIG. 17 is laid in parallel with the asphalt-based sound insulating material 119.

  In the floor heating part, the finishing material 16 common to the non-floor heating part can be arranged in parallel so as to overlap the non-floor heating part. A double floor structure that is barrier-free without a step between the floor heating unit and the non-floor heating unit can be formed extremely efficiently.

The double floor structure of Examples 1 and 2 described above is evaluated.
In the double floor structure having floor heating in the present invention, when the floor finish height is 122 mm, it substantially matches the floor height 121 mm of the non-floor heating part of Example 1, and the floor heating part and the non-floor heating part The floor finish can be easily barrier-free.

  As described above, the heating double-floor structure of the present invention is a conventional sound insulating material because the supporting member is used as a floor heating laying on the second floor or more of a general dwelling unit and further imparting sound insulation performance. Or floor materials such as discarded paste for protecting the floor heating panel, and incidental construction that adjusts the floor height of the double floor are not required, and the floor height of the non-floor heating part and the floor heating part are made the same. Furthermore, the floor finish height can be made the same level, and the double floor can be easily made barrier-free, and the ground impact noise level can be reduced.

It is sectional drawing which shows the heating double floor structure of an example of this invention. It is sectional drawing of the heating double floor structure of the other example of this invention. It is a perspective view which shows partially the structure of the example of a warm water sheet concerning this invention. It is a perspective view which shows the state which combined the hot water sheet | seat and the supporting member. It is sectional drawing which shows the conventional warm water sheet of an example. It is sectional drawing which shows the conventional floor heating structure of an example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,11 Heating double floor structure 2,12 Floor base 3,13 Floor support leg 3A, 13A Support bolt 3B, 13B Rubber base 3C Plate-like body 3D, 13D Nut 4,14 Floor base material 4A, 14A Seam 5,15 , 25 Heating member 6, 16 Floor finishing material 7, 17, 27 Support member 14B Bottom layer floor base material 25A Pipe 25B Resin layer 25C Heat radiation layer 27A Recess

Claims (5)

A floor base, a floor support leg on the floor base, a floor base material on the floor support leg, a heating member on the floor base material, and a floor finishing material on the heating member, and heated by the heating member Heating double floor structure,
The heating member is supported by a support member under the heating member, and the support member is formed of a crosslinked molded body of at least one material selected from the group consisting of rubber and elastomer, and the support member is 60 to 60- A heating double floor structure characterized by having a hardness of 80 and an areal density of 15 to 25 kg / m ² .   The heating double floor structure according to claim 1, wherein the support member has a specific gravity of 1.8 to 2.7.   The heating member is made of a hot water sheet, and the hot water sheet includes a pipe for circulating the hot water, a flat heat radiation layer on the upper side of the pipe, and a resin layer on the lower side of the pipe having a recess for housing the pipe. The heating double floor structure according to claim 1 or 2.   The heating double floor structure according to any one of claims 1 to 3, wherein the support member has a recess for accommodating the pipe. The heating double floor structure is adjacent to a non-heating double floor structure that does not have the heating member, and the bottom surface level of the floor base material in the heating double floor structure and the non-heating double floor structure. And the level of the upper surface of the said floor finishing material is the same, The heating double floor structure as described in any one of Claims 1-4.

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