JP3923843B2 - Double floor structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a double bed structure used in the apartment or residential. The double floor structure is a structure in which a floor board is laid by providing a space on a floor slab such as concrete. In addition, the double floor structure of the present invention includes a structure having a floor heating hot water mat (hot water type or electric type).
[0002]
[Prior art and problems to be solved by the invention]
FIG. 9 is a side view schematically showing a conventional double floor structure.
The conventional double floor structure 51 includes a support block 53 arranged on a ground slab such as concrete and a floor board structure 55 supported on the block 53. The support block 53 is for supporting the floor board structure 55 on the base slab, and the level of the floor board structure 55 can be adjusted from above the block (details will be described later). The floor board structure 55 includes a base plate 57 placed on the support block 53, a sound insulation sheet 59 laid on the base plate 57, a discarding plywood 61 laid on the sound insulation sheet 59, and a discarding plywood. The floor heating hot water mat 63 laid on 61 and a floor board (flooring material) 65 laid on the hot water mat 63 are configured.
[0003]
The support block 53 includes rubber legs 67 and a support plate 69. A bolt 71 extending upward is integrally provided at the center of the rubber leg 67. The bolt 71 engages with a nut 73 fixed through the center of the support plate 69. By inserting a screwdriver tip into the tip of the bolt 71 and rotating the bolt 71, the distance between the rubber leg 67 and the support plate 69 changes, and the height from the base slab to the support plate 69 changes.
[0004]
For example, the base plate 57 is a wood fiberboard having a length of 1820 mm, a width of 600 mm, and a thickness of 20 mm. The base plate 57 is fixed to the support plate 69 of the support block 53 with screws 75. The sound insulation sheet 59 is an asphalt sound insulation sheet having a thickness of 8 mm, for example. The discarded pasting plywood 61 is, for example, a plywood having a thickness of 12 mm. The discarding plywood 61 is used for heat insulation of the sound insulating sheet 59. This is because when the warm water mat 63 and the sound insulation sheet 59 are in direct contact with each other, the temperature rise of the warm water mat 63 softens the asphalt sound insulation sheet 59 (about 80 ° C. softening point), and generates volatile organic compounds. This is because the compound may deteriorate the hot water pipe of the hot water mat 63. The discarded pasting board 61, the sound insulation sheet 59, and the base plate 57 are fixed with screws 77 or the like.
The hot water mat 63 is an example and has a thickness of 12 mm, and a hot water pipe is embedded in a heat insulating material such as foam material. The hot water mat 63 is discarded and fixed to the plywood 61 at the small joist 64 portion. The flooring 65 has an example thickness of 12 mm. The floor material 65 is fixed to the small joists 64 of the hot water mat 63 with floor nails 66.
[0005]
Next, the construction method of this double floor structure is demonstrated.
10 and 11 are diagrams schematically illustrating a conventional double floor construction method.
First, as shown in FIG. 10A, support blocks 53 are arranged at predetermined intervals on the slab floor. Next, the base plate 57 is placed in the vertical and horizontal directions on the upper surface of the support plate 69 of the support block 53, and the base plate 57 is spread over the entire construction site. Note that the base plate 57 is placed on the joist 79 at the wall of the construction site. At this time, a gap is formed between the adjacent base plates 57 so that the tip of the bolt 71 on the upper surface of the support plate 68 of the support block 53 is exposed upward. Then, a screwdriver tip is inserted into the tip of the bolt 71 from above the clearance to rotate the bolt to adjust the height of the support plate 69 and adjust the level of the underlying base plate 57. At this stage, the level of the floorboard structure can be adjusted.
[0006]
Next, as shown in FIG. 10B, a sound insulating sheet 59 is spread over the entire surface (including the gap between the base plates) on the spread base plate 57. The sound insulation sheet 59 has a heavy weight per unit area in order to reduce heavy floor impact sound. For this reason, when the sound insulation sheet 59 is laid on the base plate 57, the weight of the sound insulation sheet 59 may cause the rubber legs of the support block 53 to sink 3 to 7 mm in the center of the room. This is because the degree of freedom in the height direction of the support block 53 at the center portion is relatively high with respect to the joist 79 when the wall is fixed, so that the sound insulation sheet 59 is in a state of a beam whose periphery is fixed. This is thought to be because the center part bends.
At this time, since the sound insulation sheet 59 is spread over the entire surface of the base plate 57, the height of the support block 53 cannot be adjusted.
[0007]
Further, as shown in FIG. 11 (A), the discarding plywood 61 is also laid on the entire surface of the sound insulating sheet 59 with the center of the room submerged. Similarly, when the hot water mat 61 is laid on the entire surface of the discarded plywood 59 as shown in FIG. 11B, and on the entire surface of the hot water mat 61 as shown in FIG. When the flooring 65 is laid down, the center portion of the room is left bent.
[0008]
Thus, the level of the floor surface is adjusted only in a state where the base plate 57 is laid on the support block 53, and the level is adjusted at each stage where the layers are sequentially laminated on the base plate 57. There wasn't. For this reason, the sinking of the center of the floor due to the weight of the sound insulating sheet 59 directly affects the final floor surface made up of the surface of the flooring 65, and the finished floor sinks near the center.
[0009]
Further, when the temperature of the hot water mat 63 rises during floor heating, the above-mentioned discarded pasting plywood 61 has a reduced moisture content on the surface in contact with the hot water mat 63, and the plywood 61 may be warped. Further, a discarded laminated plywood is not 12 mm thick (for example, a 9 mm thick plywood used together with a 3 mm thick sound insulation sheet) is not versatile and expensive, resulting in poor material yield. Sometimes.
[0010]
In addition, as described above, the conventional double floor structure has a five-layer structure, and it takes time for the work of laying each layer and the fixing work of each layer, and the entire construction time becomes longer.
[0011]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a double floor structure having a simple structure and a construction method thereof capable of adjusting the level of the floor surface.
[0016]
[Means for Solving the Problems]
The double floor structure of the present invention includes a plurality of level-adjustable support blocks arranged on a floor slab of a building, a base plate placed on the support block, and heat insulation laid on the base plate A double structure comprising a sound insulation sheet and a floor material laid on the sheet, wherein the heat insulation sound insulation sheet is a compression-molded fiberboard layer and an asphalt layer including a high specific gravity piece. Zaidea is, further, said comprising the laid floor heating hot water mat between the adiabatic sound insulation sheet and the flooring material, a layer on the side in contact with the mat of the insulation sound insulation sheet is a fibrous sheet layer Features.
Because no discarded plywood is used, the floor structure is simple and low-cost, and the construction time can be shortened.
[0017]
In the present invention, the comprising the laid floor heating hot water mat between the adiabatic sound insulation sheet and the flooring material, since the layer on the side in contact with the mat of the insulation sound insulation sheet is a fibrous sheet layer, insulation sound insulation By using the fiberboard layer as the surface of the sheet on the hot water mat side, it is possible to prevent the softening of the asphalt layer by providing a heat insulating effect. Therefore, it is possible to prevent deterioration of the pipe of the hot water mat due to the softening of the asphalt layer. In addition, the heat dissipation ratio to the upper surface of the hot water mat is increased.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, it demonstrates, referring drawings.
FIG. 1 is a side sectional view of a double floor structure according to an embodiment of the present invention.
The double floor structure 1 has a support block 3 arranged on a base slab such as concrete and a floor board structure 5 supported on the support block 3. The floor board structure 5 is laid on the layer of the base plate 7 placed on the support block 3, the layer of the heat insulating sound insulating sheet 9 laid on the layer of the base plate 7, and the layer of the heat insulating sound insulating sheet 9. The floor heating hot water mat 11 and a floor board (flooring material) 13 laid on the hot water mat 11 layer.
[0023]
The support block 3 includes a soundproof rubber leg 15 and a support plate 17. The support plate 17 is made of 100 mm square and 15 mm thick plywood, or 100 square and 20 mm thick, and a wood fiberboard with a bending strength of 18 MPa or more. A steel bolt 19 extending upward is integrally provided at the center of the rubber leg 15. A minus-shaped groove into which a minus driver is inserted is formed on the front end surface of the bolt 19. The bolt 19 engages with a nut 21 fixed through the center of the support plate 17. By inserting a screwdriver into the head end surface of the bolt 19 and rotating the bolt 19 with respect to the nut 21, the distance between the rubber leg 15 and the support plate 17 is changed, and the height from the slab floor to the support plate 17 is changed. .
[0024]
For example, the base plate 7 is a wood fiberboard having a length of 1820 mm, a width of 600 mm, and a thickness of 20 mm. A gap D1 is formed between the adjacent base plates 7 so that the head end surface of the bolt 19 is exposed upward. The base plate 7 is fixed to the support plate 17 with coarse thread screw screws 23. The distance between the gaps D1 is, for example, 15 to 20 mm. This clearance D1 becomes a work space. Then, the level of the support block 3 can be adjusted by inserting a screwdriver from above the clearance D1 and inserting the screwdriver tip into the minus groove on the head tip surface of the bolt 19 and rotating it.
[0025]
The heat insulating sound insulation sheet 9 is a two-layer structure material in which a fiberboard layer 9a and an asphalt layer 9b are bonded, and in one example, the width is 600 mm, the length is 600 mm, and the thickness is 12 mm. The fiberboard layer 9a is a fiberboard that is compression-molded through an olefin-based binder, and has a thermal conductivity of 3.5 to 4.0 × 10 ⁻⁴ cal / cm · sec · ° C. and can be used as a general heat insulating material. . The thickness of the fiberboard layer 9a is 4 to 8 mm as an example. The asphalt layer 9b is a high specific gravity asphalt-based sound insulating material and has a thickness of 6 to 10 mm as an example. The heat insulating sound insulating sheet 9 has a surface density of 30 to 50 kg / cm ³ and the weight of one sheet is 20 kg or less.
[0026]
The heat insulating sound insulation sheet 9 is placed on the base plate 7 without being fixed with screws or an adhesive. At this time, the surface of the heat insulating sound insulating sheet 9 on the fiber plate layer 9 a side is positioned so as to contact the upper surface and the surface of the asphalt layer 9 b side is in contact with the base plate 7. Further, a gap D2 (work space) having the same width is opened at the same position as the gap D1 (work space) between the bases. For this reason, a screwdriver can be inserted from above the clearance D2 of the heat insulating sound insulation sheet 9, the tip of the screwdriver can be inserted into the minus groove on the head tip surface of the bolt 19, and rotated. For this reason, the level adjustment of the support block 3 can be performed after the heat insulation sound insulation sheet 9 is laid.
[0027]
The hot water mat 11 is, for example, 12 mm thick, and includes a heat insulating material (mat plate) 27 such as a foam material in which the hot water pipe 25 is embedded, and a wooden small joist 29. The hot water mat 11 has a hole 31 penetrating vertically. And the hot water mat | matte 11 is arrange | positioned so that this hole 31 may connect with work space D1, D2. The small joist 29 of the hot water mat 11, the heat insulating sound insulation sheet 9, and the base plate 7 are fixed with coarse thread screws 33. With such a structure, a driver can be inserted from the through hole 31 of the hot water mat 11, and the tip of the driver can be inserted into the minus groove on the tip end surface of the bolt 19 and rotated. For this reason, the level of the support block 3 can be adjusted even after the hot water mat 11 is laid.
[0028]
The floor material 13 is a floor heating flooring material, and has a thickness of 12 mm as an example. The floor material 13 is fixed to the small joists 29 of the hot water mat 11 and the heat insulating sound insulation sheet 9 with floor nails 35.
[0029]
In this double floor structure, not only the base plate 7 but also the heat insulation sound insulation sheet 9 and the hot water mat 11 are provided with work spaces for adjusting the level of the support block 3 (D2, through holes 31). The level of the floor surface can be adjusted at each stage of lamination. In particular, since the level can be adjusted after the heat insulating sound insulating sheet 9 is laid down, sinking due to the weight of the heat insulating sound insulating sheet 9 can be adjusted.
[0030]
Further, since the discarded pasted plywood is not used, the floor structure is simple and low-cost, and the screwing work for fixing the discarded pasted plywood to the base plate or the sound insulation sheet becomes unnecessary. In addition, by using the heat-insulation and sound-insulating sheet 9 in place of the discarded plywood, sufficient sound insulation and protection of the hot water mat pipe can be performed.
[0031]
Next, the construction method of this double floor structure is demonstrated.
FIG. 2 is a plan view of a state in which a support block and a base plate are laid, FIG. 2 (A) is an overall view, and FIG. 2 (B) is a partially enlarged view. The vertical and horizontal directions in the text indicate the vertical and horizontal directions in the drawing.
First, the support block 3 is spread on the slab floor of the room where the floor is to be constructed. At this time, the support blocks 3 are arranged between the walls in the horizontal direction in four rows at intervals of 455 mm. Note that the vertical interval between the columns is 600 mm.
[0032]
Next, the base plates 7 are placed on the upper surface of the support plate 17 of the support block 3 and the joist (reference numeral 43 in FIG. 8) in three rows in the length direction, and spread over the entire floor surface. At this time, a gap D1 having a width of 20 mm is provided between the base plates adjacent in the length direction. Further, a clearance D1 of 20 mm is also provided between the base plates adjacent in the width direction of the base plate. Note that the positions of the gaps between the base plates adjacent in the length direction are shifted by equal intervals in the length direction of the base plate in each row.
[0033]
As shown in FIG. 2 (B), the head end face of the bolt 19 of the support block 3 is exposed from the gap D1 in the length direction and width direction of the base plate. At the position where the base plate 7 is in contact with the length direction and the width direction, the corners of the two base plates 7-5 and 7-6 adjacent to each other in the length direction are placed at the two corners of the support plate 17. And fixed with screws 23. In addition, on the side part including the other two corners of the support plate 17, the side part of one base plate 7-9 adjacent in the width direction is placed and fixed by the two screws 23.
[0034]
Then, a screwdriver is inserted from the clearance D1, and the tip of the screwdriver 19 is inserted into the minus groove 19a of the head tip surface of the bolt 19 exposed from the upper surface of the support plate 17 and rotated to adjust the level of the base plate surface.
[0035]
Next, the heat insulating sound insulation sheet 9 is spread on the base plate 7.
FIG. 3 is a plan view showing a state in which a heat insulating sound insulation sheet is spread on a part of the base plate, FIG. 3 (A) is an overall view, and FIG. 3 (B) is a partially enlarged view.
FIG. 4 is a partial side sectional view of the state of FIG.
The heat insulating sound insulation sheet 9 is placed on the upper surface of the base plate 7 arranged in the length direction without any gap. At this time, let the fiber board layer 9a side of the heat insulation sound-insulation sheet 9 be an upper side, and let the asphalt layer 9b side be a lower side. Since the width of the heat insulating sound insulating sheet 9 is equal to the width of the base plate 7 and is 600 mm, it can be placed on the base plate 7 aligned in the row direction. Note that a gap D2 having the same width as the gap between the base plates is opened in the width direction. The heat insulating sound insulating sheet can be the same size as the base plate.
The heat insulating sound insulating sheet 9 is merely placed on the base plate 7 and is not fixed with screws or the like.
[0036]
In this state, the rubber legs 15 of the support block 3 may sink due to the weight of the heat insulating sound insulating sheet 9. In such a case, as shown in FIG. 4, a screwdriver 41 is inserted from above into the gaps D <b> 1 and D <b> 2 between adjacent base plates and heat insulating sound insulation sheets, and the bolts 19 exposed from the upper surface of the support plate 17. The height of the support plate 17 is adjusted by inserting it into the minus groove on the front end surface of the head and rotating to adjust the level of the heat insulating sound insulation sheet 9 surface.
[0037]
Next, the hot water mat 11 is laid on the heat insulating sound insulation sheet 9.
FIG. 5 is a plan view showing a state in which a hot water mat is spread on a heat insulating sound insulation sheet, FIG. 5 (A) is an overall view, and FIG. 5 (B) is a partially enlarged view.
FIG. 6 is a partial side sectional view of the state of FIG.
In the portion of the heat insulating material 27 of the hot water mat 11, a plurality of through holes 31 are opened at intervals of 455 mm in the length direction and 600 mm in the width direction. When the hot water mat 13 is laid on the heat insulating sound insulating sheet 11, the hot water mat 13 is positioned so that these through holes 31 communicate with the base plate and the gaps D1 and D2 of the heat insulating sound insulating sheet. Then, as shown in FIG. 6, the small joists 29 of the hot water mat 11 are fixed to the heat insulating sound insulating sheet 9 and the base plate 7 with coarse thread screws 33. In addition, the dummy plywood 37 is stuck on both sides of the hot water mat on the floor surface.
[0038]
Even in this state, if it is necessary to adjust the level of the surface of the hot water mat 11, a screwdriver is inserted into the work space from the through hole 31 of the hot water mat 11, and is inserted into the minus groove on the front end surface of the bolt 19 of the support block 3. It can be rotated to adjust the level on the same surface.
[0039]
Finally, the flooring material 13 is spread on the upper surface of the hot water mat 11 and fixed to the small joists 29 of the hot water mat 13 with a floor nail 35 or an adhesive. Thereby, the double floor 1 of the cross-sectional structure shown in FIG. 1 can be constructed.
[0040]
FIG. 7 is a plan view showing another structure of the hot water mat.
In the hot water mat 13 of this example, the through hole 31 is a slit-like long hole. By making the through-hole 31 a long hole, the positioning range of the hot water mat 13 is expanded.
[0041]
FIG. 8 is a side view showing the construction process of the double floor structure described above, FIG. 8 (A) is a base plate laying stage, FIG. 8 (B) is a heat insulating sound insulation sheet laying stage, and FIG. 8 (C) is hot water. The mat laying stage is shown.
As can be seen from the above description, in the base plate laying stage of FIG. 8A, the level of the support block 3 can be adjusted from the gap D1 between the base plates. 8B, the level of the support block 3 can be adjusted based on the gap D2 between the sheets and the gap D1 between the base plates. Further, the level of the support block can be adjusted from the through hole 31 of the hot water mat 13 also in the stage of laying the hot water mat in FIG.
[0042]
【The invention's effect】
As apparent from the above description, according to the present invention, by using a heat-insulating sound-insulating sheet instead of traditional discarded bonded plywood, it can be shortened and cost of the construction time for the floor structure can be simplified.
[Brief description of the drawings]
FIG. 1 is a side sectional view of a double floor structure according to an embodiment of the present invention.
FIG. 2 is a plan view of a state in which a support block and a base plate are laid, FIG. 2 (A) is an overall view, and FIG. 2 (B) is a partially enlarged view. The vertical and horizontal directions in the text indicate the vertical and horizontal directions in the drawing.
FIGS. 3A and 3B are plan views showing a state in which a heat insulating and sound insulating sheet is spread on a part of the base plate, FIG. 3A is an overall view, and FIG. 3B is a partially enlarged view.
4 is a partial side cross-sectional view of the state of FIG. 3. FIG.
FIG. 5 is a plan view showing a state in which a hot water mat is spread on a heat insulating sound insulation sheet, FIG. 5 (A) is an overall view, and FIG. 5 (B) is a partially enlarged view.
6 is a partial side cross-sectional view of the state of FIG.
FIG. 7 is a plan view showing another structure of the hot water mat.
8 is a side view showing a construction process of a double floor structure, FIG. 8 (A) is a base plate laying stage, FIG. 8 (B) is a thermal insulation sound insulation sheet laying stage, and FIG. 8 (C) is a hot water mat laying. Indicates the stage.
FIG. 9 is a side view schematically showing a conventional double floor structure.
FIG. 10 is a diagram schematically illustrating a construction method of a conventional double floor structure.
FIG. 11 is a diagram schematically illustrating a construction method of a conventional double floor structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Double floor structure 3 Support block 5 Floor board structure 7 Ground plate 9 Heat insulation sound insulation sheet 11 Floor heating hot water mat 13 Floor board (flooring material) 15 Soundproof rubber leg 17 Support board 19 Bolt 21 Nut 23 Coarse thread screw screw 25 Hot water pipe 27 Heat Insulation 29 Koeda 31 Hole 33 Coarse Thread Screw 35 Floor Nail

Claims (1)

A plurality of level adjustable support blocks arranged on the floor slab of the building;
A base plate placed on the support block;
A heat insulating sound insulation sheet laid on the base plate;
A flooring laid on the sheet,
The insulation sound insulation sheet, and compression molded fiberboard layer, Ri double structure member der that the asphalt layer has been glued containing high specific gravity wood piece,
Furthermore, it comprises a floor heating hot water mat laid between the heat insulating sound insulation sheet and the floor material,
The double floor structure , wherein a layer on the side of the heat insulating sound insulating sheet that is in contact with the mat is a fiberboard layer .

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