JP6872335B2 - Underfloor insulation - Google Patents

Description

The present invention relates to an underfloor insulation material.

For example, there is an underfloor heat insulating material laid between large pulls and joists that constitute a floor structure (see, for example, Patent Document 1). The underfloor heat insulating material is made of a foamed resin molded product (hereinafter referred to as a main body panel) obtained by molding polystyrene foam (EPS: Expanded Poly-Styrene) in a plate shape. EPS is formed by adding a foaming agent or a flame retardant to polystyrene resin to make beads, heating them with steam to foam them, and filling them in a mold.

Utility Model Registration No. 2519235

By the way, when molding the above-mentioned main body panel, since the panel itself has a large shape (for example, 900 mm square), a large mold is required to mold the main body panel, and there is a problem that the manufacturing cost increases.

Further, when the main body panel is molded by using a mold in which the particle lines remaining on the main body panel are in the horizontal direction with respect to the main surface of the main body panel (hereinafter referred to as “pre-emption molding”), the particle lines occupy the surface of the mold 1 The ratio (area) of one main body panel increases. For this reason, in the case of take-over molding, there is a drawback that the number of main body panels that can be taken out from the mold in one molding is reduced.

On the other hand, when the main body panel is molded (hereinafter referred to as vertical molding) using a mold in which the particle lines remaining on the main body panel are in the vertical direction with respect to the main surface of the main body panel, it occupies the inside of the mold surface. The ratio (area) of one main body panel becomes smaller. Therefore, in the case of vertical molding, it is possible to increase the number of main body panels that can be taken out from the mold in one molding as compared with horizontal molding.

However, in the case of vertical molding, it is necessary to secure a large space (cavity) for molding the main body panel in the depth direction according to the size of the main body panel, and a mold having a correspondingly large thickness is required. Will be.

Further, with the conventional underfloor heat insulating material, when it rains after being laid between the floors, rainwater tends to remain on the surface of the main body panel, and if the floorboard is put on the floor without draining or drying. , There is a risk that mold etc. will be generated under the floor.

The present invention has been proposed in view of such conventional circumstances, and an object of the present invention is to provide an underfloor heat insulating material which can reduce the manufacturing cost and has excellent drainage.

In order to achieve the above object, the present invention provides the following means.
(1) An underfloor heat insulating material laid between floors.
Equipped with a main body panel made of foamed resin molded body,
The main body panel has a plurality of division panels divided along a plurality of division lines parallel to each other.
The plurality of divided panels are characterized by having a connecting structure connected to each other between the abutting surface of one dividing panel and the abutting surface of the other dividing panel, which are abutted across the dividing line. Underfloor insulation.
(2) The underfloor heat insulating material according to (1) above, wherein the divided panel has a pair of inclined surfaces that are inclined with a ridge line in a direction along the dividing line on at least one surface or both sides.
(3) The main body panel has a pair of slits formed on both sides in a direction along the dividing line so as to cut out one surface of the plurality of dividing panels along a direction intersecting the dividing line. And
The underfloor heat insulating material according to (1) or (2), wherein the outer side of the main body panel is elastically deformable in a direction in which the width of the pair of slits is narrowed.
(4) The underfloor heat insulating material according to (3) above, wherein the divided panel has a groove portion on one of the abutting surfaces to discharge rainwater flowing into the inside of the slit to the outside.
(5) The underfloor heat insulating material according to (4) above, wherein the groove portion communicates from the bottom surface of the slit toward the side surface of the divided panel on the side intersecting the abutting surface.
(6) The connecting structure has a fitting convex portion provided on the butt surface of the one divided panel and a fitting concave portion provided on the butt surface of the other divided panel, and the fitting is said. The underfloor heat insulating material according to any one of (1) to (5) above, wherein the fitting convex portion is fitted into the concave portion.
(7) The underfloor heat insulating material according to (6) above, wherein the butt surface of the one divided panel and the butt surface of the other divided panel have a pair of stepped portions that are abutted against each other.

As described above, according to the present invention, it is possible to provide an underfloor heat insulating material which can reduce the manufacturing cost and has excellent drainage.

It is a perspective view of the main body panel which comprises the underfloor heat insulating material which concerns on one Embodiment of this invention. It is an exploded perspective view which shows the structure of the main body panel shown in FIG. One of the divided panels constituting the main body panel shown in FIG. 1 is shown, (a) is a top view thereof, (b) is a side view seen from the butt surface side, and (c) is a side intersecting the butt surface. It is a side view seen from. The other divided panel constituting the main body panel shown in FIG. 1 is shown, (a) is a top view thereof, (b) is a side view seen from the butt surface side, and (c) is a side view opposite to the butt surface. The viewed side view, (d) is a side view seen from the side intersecting the butt surface, and (e) is a cross-sectional view taken along the line segment AA'. It is a figure for demonstrating the drainage performance of the main body panel shown in FIG. 1, (a) is the perspective view which shows the path of the rainwater, (b) is the perspective view which enlarged the enclosed part B.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As an embodiment of the present invention, for example, the underfloor heat insulating material 1 shown in FIGS. 1 to 4 will be described.

Note that FIG. 1 is a perspective view of the main body panel 2 constituting the underfloor heat insulating material 1. FIG. 2 is an exploded perspective view showing the configuration of the main body panel 2. FIG. 3 shows one divided panel 3B constituting the main body panel 2, (a) is a top view thereof, (b) is a side view seen from the butt surface side thereof, and (c) is an intersection with the butt surface. It is a side view seen from the side to do. 4A and 4B show the other divided panels 3A and 3C constituting the main body panel 2, where FIG. 4A is a top view thereof, FIG. 4B is a side view seen from the butt surface side thereof, and FIG. Is a side view seen from the opposite side, (d) is a side view seen from the side intersecting the butt surface, and (e) is a cross-sectional view taken along the line segment AA'.

Further, in the drawings shown below, the XYZ Cartesian coordinate system is set, the X-axis direction is the length direction of the underfloor heat insulating material 1, the Y-axis direction is the width direction of the underfloor heat insulating material 1, and the Z-axis direction is the underfloor heat insulating material 1. Each is shown in the thickness direction.

The underfloor heat insulating material 1 of the present embodiment heats the underfloor by being laid between, for example, a large pull or a joist constituting the floor structure. Specifically, as shown in FIGS. 1 and 2, the underfloor heat insulating material 1 includes a main body panel 2 formed in a substantially rectangular flat plate shape as a whole.

The main body panel 2 is made of, for example, an EPS foamed resin molded body. EPS is formed by adding a foaming agent or a flame retardant to polystyrene resin to make beads, heating them with steam to foam them, and filling them in a mold. Examples of the foamed resin molded product include extruded polystyrene foam, rigid urethane foam, polyethylene foam, phenol foam, and the like, in addition to EPS.

The main body panel 2 has a plurality of (three in the present embodiment) divided panels 3A, 3B, 3C divided along a plurality of (two in the present embodiment) dividing lines C parallel to each other. That is, the main body panel 2 has three divided panels 3A, 3B, and 3C that are substantially evenly divided along the two divided lines C parallel to the width direction (Y-axis direction) of the underfloor heat insulating material 1. doing. These three divided panels 3A, 3B, and 3C have thicknesses that match each other and are connected via a connecting structure described later.

The main body panel 2 has a direction (X-axis) in which the upper surfaces of the divided panels 3A, 3B, and 3C intersect with the divided line C (orthogonal in the present embodiment) on both sides in the direction along the divided line C (Y-axis direction). It has a pair of slits 4a, 4b formed so as to be cut out along the direction). The pair of slits 4a and 4b are formed by V-grooves whose width gradually narrows toward the bottom surface.

On the other hand, the main body panel 2 has a direction (X-axis) in which the lower surfaces of the divided panels 3A, 3B, 3 intersect with the divided line C (orthogonal in the present embodiment) at positions facing the bottom surfaces of the pair of slits 4a, 4b. It has a pair of subslits 4c, 4d formed so as to be cut out along the direction). The pair of sub-slits 4c and 4d are formed by flat shallow grooves having a bottom surface having substantially the same width as the bottom surface of the pair of slits 4a and 4b.

Further, the main body panel 2 has a pair of subslits 4c and 4d and side surfaces 2a and 2b parallel to the subslits 4c and 4d in order to facilitate fitting between the large pulls and joists constituting the above-mentioned floor assembly. , An inclined surface or a curved convex surface whose width gradually narrows in the thickness direction (Z-axis direction) is formed.

The three divided panels 3A, 3B, and 3C are one divided panel 3B located at the center of the main body panel 2 in the length direction (X-axis direction) of the underfloor heat insulating material 1, and a second divided panel of the main body panel 2. It is composed of the other divided panels 3A and 3C located on both sides of the 3B. Further, the other divided panels 3A and 3C are the same as each other, and are arranged in opposite directions with each other with the one divided panel 3B interposed therebetween.

As shown in FIGS. 3A to 3C, one of the divided panels 3B is formed into a substantially rectangular flat plate shape as a whole by vertically forming the above-mentioned EPS. Further, one of the divided panels 3B has a pair of inclined surfaces 5a and 5b that are inclined with the ridge line P in the direction along the dividing line C (Y-axis direction) on at least one surface or both sides (both sides in the present embodiment). Have.

The ridge line P is a particle line that remains on the surface of one of the divided panels 3B when the EPS is vertically formed, and divides the central portion of the one divided panel 3B in the direction along the dividing line C (Y-axis direction). It is formed like this.

The pair of inclined surfaces 5a and 5b are provided in a direction (X-axis direction) away from the ridge line P located at the center of one of the divided panels 3B as a draft for facilitating the release from the mold cavity after molding. It is tilted toward. The draft angle is, for example, about 0.5 ° to 3 ° (1 ° in this embodiment).

One of the split panels 3B has butt surfaces 6a and 6b that are abutted with the other split panels 3A and 3C with the split line C in between. The butt surfaces 6a and 6b are provided with a plurality of (three in the present embodiment) fitting protrusions 7a, 7b and 7c constituting the connecting structure. The plurality of fitting protrusions 7a, 7b, 7c are provided side by side in the direction (Y-axis direction) along the dividing line C. The plurality of fitting convex portions 7a, 7b, 7c have a shape in which the fitting convex portions 7a, 7c on both sides of the central fitting convex portion 7b are symmetrical, and have the same height from the butt surfaces 6a, 6b. It is provided so as to protrude. It should be noted that each of the fitting convex portions 7a, 7b, and 7c has a sufficient area to be in contact with the extrusion pin at the time of die cutting by vertical forming.

Further, the butt surfaces 6a and 6b are provided with stepped portions 8a in a direction parallel to the dividing line C (Y-axis direction). The step portion 8a is formed so that the lower surface side of the butt surfaces 6a and 6b is one step lower than the fitting convex portions 7a, 7b and 7c.

The butt surfaces 6a and 6b are provided with groove portions 9 for discharging the rainwater that has flowed into the slits 4a and 4b to the outside. The groove 9 is communicated from the bottom surface of the slits 4a and 4b toward the side surface orthogonal to the abutting surfaces 6a and 6b of the first divided panel 3A (the side surface corresponding to the side surfaces 2a and 2b of the main body panel 2). ing. Further, the groove portion 9 is provided so as to be inclined in the depth direction (−Z axis direction) from the bottom surface of the slits 4a and 4b.

As shown in FIGS. 4A to 4E, the other divided panels 3A and 3C are formed into a substantially rectangular flat plate shape as a whole by vertically forming the EPS in the same manner as the one divided panel 3A. Has been done. Further, the other divided panels 3A and 3C have a pair of inclined surfaces 5a, which are inclined with respect to the ridge line P in the direction along the dividing line C (Y-axis direction) on at least one surface or both surfaces (both sides in the present embodiment). It has 5b.

The other split panels 3A and 3C have a butt surface 6c that is abutted against one of the split panels 3B with the split line C in between. The butt surface 6c is provided with a plurality of (three in this embodiment) fitting recesses 10a, 10b, and 10c constituting the connecting structure. The plurality of fitting recesses 10a, 10b, and 10c are provided side by side in the direction (Y-axis direction) along the dividing line C.

The plurality of fitting recesses 10a, 10b, 10c have a shape in which the fitting recesses 10a, 10c on both sides of the central fitting recess 10b are symmetrical, and are recessed from the butt surface 6c at the same depth. It is provided in. Further, the plurality of fitting recesses 10a, 10b, 10c have shapes that match the plurality of fitting protrusions 7a, 7b, 7c described above on the butt surface 6c, respectively.

Further, the butt surface 6c is provided with a stepped portion 8b in a direction parallel to the dividing line C (Y-axis direction). The step portion 8b is formed so that the lower surface side of the butt surface 6c is higher than the fitting recesses 10a, 10b, 10c and the upper surface side thereof. Further, the step portion 8b has a shape that matches the step portion 8a described above.

In the main body panel 2, as shown in FIGS. 1 and 2, the butt surfaces 6a and 6b of one of the divided panels 3B and the butt surfaces 6c of the other divided panels 3A and 3C sandwich the respective dividing lines C. A state in which the plurality of divided panels 3A, 3B, 3C are connected by being butted and the plurality of fitting protrusions 7a, 7b, 7c being fitted into the plurality of fitting recesses 10a, 10b, 10c. It has become. Further, in a state where the plurality of divided panels 3A, 3B, 3C are connected, the stepped portion 8a of one divided panel 3B and the stepped portion 8b of the other divided panels 3A, 3C are butted against each other.

In the present embodiment, in order to increase the fitting strength of the fitting convex portions 7a, 7b, 7c with respect to the fitting concave portions 10a, 10b, 10c, protrusions slightly protruding from the periphery of the fitting convex portions 7a, 7b, 7c. A portion 11 is provided so that the protrusion 11 is crushed when the fitting protrusions 7a, 7b, 7c are fitted inside the fitting recesses 10a, 10b, 10c.

The main body panel 2 is elastically deformable in a direction in which the width of the pair of slits 4a and 4b becomes narrower on the outside than the pair of slits 4a and 4b. As a result, in the underfloor heat insulating material 1, when the main body panel 2 is fitted between the large pulls and joists constituting the above-mentioned floor assembly, the main body panel 2 can be brought into close contact with the large pulls and joists. is there. Further, when the pair of sub-slits 4c and 4d are elastically deformed in a direction in which the width of the pair of slits 4a and 4b becomes narrower on the outside than the pair of slits 4a and 4b of the main body panel 2, the main body panel 2 is cracked. It is preventing that.

As described above, the underfloor heat insulating material 1 of the present embodiment has a configuration in which the main body panel 2 is divided into a plurality of divided panels 3A, 3B, and 3C. Further, each of the divided panels 3A, 3B, and 3C is made of a vertically formed foamed resin molded body. This makes it possible to increase the number of divided panels 3A, 3B, and 3C that can be taken out from the mold by one molding. Further, when the divided panels 3A, 3B, and 3C smaller than the main body panel 2 are molded as compared with the case where one main body panel 2 is molded, the mold can be made smaller, so that the manufacturing cost can be reduced.

Further, in the underfloor heat insulating material 1 of the present embodiment, even when it rains after being laid between the floors, the drainage performance of the main body panel 2 is improved by the pair of inclined surfaces 5a and 5b and the groove portion 9 described above. It is possible.

Specifically, the drainage performance of the main body panel 2 will be described with reference to FIGS. 5A and 5B. 5A and 5B are views for explaining the drainage performance of the main body panel 2, where FIG. 5A is a perspective view showing the path of the rainwater W, and FIG. 5B is an enlarged perspective view of the enclosed portion B. .. Further, in FIGS. 5A and 5B, the path of the rainwater W is schematically shown by an arrow.

In the underfloor heat insulating material 1 of the present embodiment, when it rains on the surface of the main body panel 2, the rainwater W is applied to one of the divided panels 3B along the inclined surfaces 5a and 5b of the divided panels 3A, 3B and 3C. It flows into the groove portion 12 formed between the butt surfaces 6a and 6b of No. 1 and the butt surfaces 6c of the other divided panels 3A and 3C.

That is, the corners between the butt surfaces 6a and 6b of one of the divided panels 3B and the butt surfaces 6c of the other divided panels 3A and 3C are chamfered, and the corners of the chamfered corners are chamfered. Rainwater W flows into the groove 12 formed between them. The surfaces of the divided panels 3A, 3B, and 3C have water repellency due to the EPS described above. Therefore, it is difficult for rainwater W to collect on the surfaces of the divided panels 3A, 3B, and 3C.

The rainwater W that has flowed into the groove portion 12 flows into the inside of the pair of slits 4a and 4b along the groove portion 12. The rainwater W that has flowed into the slits 4a and 4b is discharged to the outside of the slits 4a and 4b (side surfaces 2a and 2b of the main body panel 2) through the groove 9.

Thereby, in the underfloor heat insulating material 1 of the present embodiment, it is possible to improve the drainage performance of the main body panel 2. Therefore, in this underfloor heat insulating material 1, even if it rains after being laid between the floors, the rainwater W can be quickly drained from the surface of the main body panel 2, so that after the floor board is put on it, the underfloor It is possible to prevent the occurrence of mold and the like.

The present invention is not necessarily limited to that of the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the underfloor heat insulating material 1, the main body panel 2 is divided into three divided panels 3A, 3B, and 3C, but the number of divided main body panels 2 can be appropriately changed. ..

Further, in the underfloor heat insulating material 1, the main body panel 2 is substantially evenly divided into a plurality of divided panels 3A, 3B, and 3C, but the main body panel 2 can be divided into different sizes. .. Further, in the underfloor heat insulating material 1, a plurality of divided panels 3A, 3B, and 3C having different sizes can be prepared, and the size (total length) of the main body panel 2 can be appropriately changed depending on the combination thereof.

Further, the underfloor heat insulating material 1 has a configuration in which a pair of inclined surfaces 5a and 5b are provided on both surfaces of the divided panels 3A, 3B and 3C, but the upper surfaces (one surface) of the divided panels 3A, 3B and 3C are provided. It is also possible to provide the inclined surfaces 5a and 5b only on the) and make the lower surface (other surface) of each of the divided panels 3A, 3B and 3C flat.

Further, the underfloor heat insulating material 1 has a fitting structure in which the fitting convex portions 7a, 7b, 7c are fitted into the above-mentioned fitting recesses 10a, 10b, 10c as a connecting structure. The structure can also be changed as appropriate. Further, instead of the above-mentioned fitting structure, a connecting tool or the like may be used for connecting.

Further, in the underfloor heat insulating material 1, the groove portion 9 is provided on the butt surface 6a, 6b of one of the divided panels 3B, but the groove portion 9 is provided on the butt surface 6c of the other divided panels 3A, 3C. It may be configured as such.

In addition to the above-mentioned underfloor heat insulating material laid between floors, the present invention can be widely applied to residential heat insulating materials installed between roofs and walls. is there.

1 ... Underfloor heat insulating material 2 ... Main body panel 2a, 2b ... Side surface 3B ... One split panel 3A, 3C ... Other split panel 4a, 4b ... Slit 4c, 4d ... Subslit 5a, 5b ... Inclined surface 6a, 6b, 6c ... Butt surface 7a, 7b, 7c ... Fitting convex portion 8a, 8b ... Step portion 9 ... Groove portion 10a, 10b, 10c ... Fitting concave portion C ... Dividing line P ... Ridge line (particle line)

Claims (7)

An underfloor insulation laid between floors
Equipped with a main body panel made of foamed resin molded body,
The main body panel has a plurality of division panels divided along a plurality of division lines parallel to each other.
Wherein the plurality of dividing panels, while the abutment surfaces of the split panels to be matched across the dividing line, between the abutting surface of the other split panel, have a connection structure to be connected to each other,
The dividing panel, at least one or both surfaces, underfloor heat-insulating material, characterized in that have a pair of inclined surfaces inclined across the ridge line in a direction along the dividing line. The main body panel has a pair of slits formed on both sides in a direction along the dividing line so as to cut out one surface of the plurality of dividing panels along a direction intersecting the dividing line.
The underfloor heat insulating material according to claim 1, wherein the outer side of the main body panel is elastically deformable in a direction in which the width of the pair of slits becomes narrower. The dividing panel, either one of the abutment surfaces, underfloor heat-insulating material according to claim 2, characterized in that it comprises a groove for discharging flowed rainwater inside the slit to the outside. The underfloor heat insulating material according to claim 3 , wherein the groove portion communicates from the bottom surface of the slit toward the side surface of the divided panel on the side intersecting the abutting surface. An underfloor insulation laid between floors
Equipped with a main body panel made of foamed resin molded body,
The main body panel has a plurality of division panels divided along a plurality of division lines parallel to each other.
Wherein the plurality of dividing panels, while the abutment surfaces of the split panels to be matched across the dividing line, between the abutting surface of the other split panel, have a connection structure to be connected to each other,
The main body panel has a pair of slits formed on both sides in a direction along the dividing line so as to cut out one surface of the plurality of dividing panels along a direction intersecting the dividing line.
The outside of the pair of slits on the main body panel is elastically deformable in a direction in which the width of the pair of slits becomes narrower.
The divided panel has a groove portion on one of the abutting surfaces to discharge rainwater that has flowed into the inside of the slit to the outside.
The groove is underfloor heat-insulating material, characterized that you have communicated toward the bottom surface of the slit in the abutment surface sides of the side intersecting the said dividing panels. The connecting structure has a fitting convex portion provided on the butt surface of the one divided panel and a fitting concave portion provided on the butt surface of the other divided panel, and the fitting concave portion is provided with the fitting concave portion. The underfloor heat insulating material according to any one of claims 1 to 5, wherein the fitting convex portion has a structure to be fitted. The underfloor heat insulating material according to claim 6, wherein the butt surface of the one divided panel and the butt surface of the other divided panel have a pair of stepped portions that are abutted against each other.

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