JP2018053457A - Underfloor insulation material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an underfloor insulating material that can reduce a manufacturing cost and beside being excellent in drainage property.SOLUTION: An underfloor insulation material 1 laid between floor systems, comprises a main body panel 2 made of a foamed resin molded body. The main body panel 2 has a plurality of divided panels 3A, 3B and 3C divided along a plurality of division lines C parallel to each other. The plurality of divided panels 3A, 3B and 3C have a connection structure in which they are joined to each other between abutting faces 6a and 6b of one divided panel 3B butted against each other with the division line C interposed and abutting faces 6c of the other divided panels 3A and 3C.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an underfloor heat insulating material.

  For example, there is an underfloor heat insulating material laid between a large drawing or joists constituting a floor assembly (see, for example, Patent Document 1). The underfloor heat insulating material is formed of a foamed resin molded body (hereinafter referred to as a main body panel) obtained by molding a beaded polystyrene foam (EPS) into a plate shape. EPS is molded by adding a foaming agent or a flame retardant to polystyrene resin to form beads by heating with steam and filling the mold.

Utility Model Registration No. 2519235

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

  Further, when a main body panel is molded 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 horizontal molding), 1 is occupied in the surface of the mold. The ratio (area) of one main body panel becomes large. For this reason, in the case of horizontal 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 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 (hereinafter, referred to as vertical molding), it occupies the surface of the mold. The ratio (area) of one main body panel is reduced. For this reason, 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 by one molding compared to 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 with a correspondingly large thickness is required. End up.

  In addition, in the conventional underfloor heat insulating material, when it rains after laying between floor sets, rainwater tends to remain on the surface of the main body panel, and the floorboard is stretched on it without draining or drying. There is also a risk that mold or the like may occur under the floor.

  This invention is proposed in view of such a conventional situation, and it aims at providing the underfloor heat insulating material which can reduce manufacturing cost and was excellent in drainage.

In order to achieve the above object, the present invention provides the following means.
(1) Underfloor insulation laid between floor sets,
It has a main body panel made of a foamed resin molding,
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 have a connection structure that is connected to each other between a butted surface of one divided panel and the butted surface of the other divided panel that are abutted across the dividing line. Underfloor insulation.
(2) The underfloor heat insulating material according to (1), wherein the divided panel has a pair of inclined surfaces which are inclined at least on one surface or both surfaces with a ridge line in a direction along the dividing line interposed therebetween.
(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 an outer side of the pair of slits 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), wherein the divided panel has a groove portion that discharges rainwater that has flowed into the inside of the slit to any one of the butted surfaces.
(5) The underfloor heat insulating material according to (4), wherein the groove portion is communicated from a bottom surface of the slit toward a side surface that intersects the butting surface of the divided panel.
(6) The connection structure includes a fitting convex portion provided on the abutting surface of the one divided panel and a fitting concave portion provided on the abutting surface of the other divided panel. The underfloor heat insulating material according to any one of (1) to (5), wherein the fitting convex portion is fitted into a concave portion.
(7) The underfloor heat insulating material according to (6), wherein the butted surface of the one divided panel and the butted surface of the other divided panel have a pair of stepped portions that are butted against each other.

  As described above, according to the present invention, it is possible to reduce the manufacturing cost and to provide an underfloor heat insulating material excellent in 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 a disassembled perspective view which shows the structure of the main body panel shown in FIG. 1 shows one of the divided panels constituting the main body panel shown in FIG. 1, wherein (a) is a top view thereof, (b) is a side view seen from the abutting surface side, and (c) is a side crossing the abutting surface. It is the side view seen from. 1 shows the other divided panel constituting the main body panel shown in FIG. 1, (a) is a top view thereof, (b) is a side view seen from the abutting surface side, and (c) is an opposite side of the abutting surface. The side view seen, (d) is the side view seen from the side which cross | intersects the butt | matching surface, (e) is sectional drawing by the line segment AA '. It is a figure for demonstrating the drainage performance of the main body panel shown in FIG. 1, (a) is a perspective view which shows the path | route of the rainwater, (b) is the perspective view which expanded the enclosing 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, an underfloor heat insulating material 1 shown in FIGS. 1 to 4 will be described.

  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. 3A and 3B show one of the divided panels 3B constituting the main body panel 2, wherein FIG. 3A is a top view thereof, FIG. 3B is a side view seen from the abutting surface side, and FIG. 3C intersects the abutting surface. It is the 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, wherein FIG. 4A is a top view thereof, FIG. 4B is a side view seen from the abutting surface side, and FIG. Is a side view seen from the opposite side, (d) is a side view seen from the side intersecting with the butting surface, and (e) is a sectional view taken along the line AA ′.

  In the drawings shown below, an XYZ orthogonal 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 under floor heat insulating material 1. It shall show as a thickness direction, respectively.

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

  The main body panel 2 is made of, for example, an EPS foam resin molding. EPS is molded by adding a foaming agent or a flame retardant to polystyrene resin to form beads by heating with steam and filling the mold. In addition to the EPS, examples of the foamed resin molded body include an extruded polystyrene foam, a rigid urethane foam, a polyethylene foam, and a phenol foam.

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

  The main body panel 2 has directions (X-axis) in which the upper surface of each of the divided panels 3A, 3B, 3C intersects with the divided line C (orthogonal in the present embodiment) on both sides in the direction along the dividing line C (Y-axis direction). A pair of slits 4a and 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 decreases toward the bottom surface.

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

  In addition, the main body panel 2 has a pair of sub-slits 4c and 4d and side surfaces 2a and 2b parallel to the sub-slits 4c and 4d so that the main panel 2 can be easily fitted between the large drawing and joists constituting the floor assembly described above. In addition, an inclined surface or a curved convex surface whose width gradually decreases in the thickness direction (Z-axis direction) is formed.

  The three divided panels 3A, 3B, 3C include 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 the second divided panel of the main body panel 2. It is comprised from the other division | segmentation panel 3A, 3C located in the both sides on both sides of 3B. The other divided panels 3A and 3C are the same as each other, and are disposed in opposite directions with respect to the one divided panel 3B.

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

  The ridge line P is a particle line remaining 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 a direction along the dividing line C (Y-axis direction). It is formed as follows.

  The pair of inclined surfaces 5a and 5b is formed 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 angle for facilitating release from the mold cavity after molding. Inclined towards. The draft angle is, for example, about 0.5 ° to 3 ° (1 ° in this embodiment).

  One divided panel 3B has abutting surfaces 6a and 6b that abut the other divided panels 3A and 3C across the dividing line C. On the butting surfaces 6a and 6b, a plurality of (three in the present embodiment) fitting convex portions 7a, 7b, and 7c constituting the connection structure are provided. The plurality of fitting convex portions 7a, 7b, 7c are provided side by side in the direction along the dividing line C (Y-axis direction). The plurality of fitting projections 7a, 7b, 7c have a shape in which the fitting projections 7a, 7c on both sides are symmetric with respect to the center fitting projection 7b, and the same height from the abutting surfaces 6a, 6b. It is provided so as to protrude. In addition, each fitting convex part 7a, 7b, 7c has an area sufficient to contact | abut with an extrusion pin at the time of the die-cutting by vertical shaping.

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

  The abutting surfaces 6a and 6b are provided with a groove portion 9 for discharging rainwater flowing into the slits 4a and 4b to the outside. The groove portion 9 is communicated from the bottom surfaces of the slits 4a and 4b toward the side surfaces orthogonal to the butting surfaces 6a and 6b of the first divided panel 3A (side surfaces 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 surfaces 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. The other divided panels 3A and 3C have at least one surface or both surfaces (both surfaces in the present embodiment) with a pair of inclined surfaces 5a inclined with a ridge line P in the direction along the dividing line C (Y-axis direction) interposed therebetween. 5b.

  The other divided panel 3A, 3C has a butting surface 6c that is abutted against one divided panel 3B with the dividing line C interposed therebetween. The butting surface 6c is provided with a plurality of (three in this embodiment) fitting recesses 10a, 10b, and 10c that constitute a coupling structure. Several fitting recessed part 10a, 10b, 10c is provided along with the direction (Y-axis direction) along the division line C. As shown in FIG.

  The plurality of fitting recesses 10a, 10b, 10c have a shape in which the fitting recesses 10a, 10c on both sides are symmetric with respect to the center fitting recess 10b, and are recessed at the same depth from the abutting surface 6c. Is provided. In addition, the plurality of fitting recesses 10a, 10b, and 10c have shapes that coincide with the above-described plurality of fitting projections 7a, 7b, and 7c, respectively, on the abutting surface 6c.

  Further, the butt face 6c is provided with a stepped portion 8b extending 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 mating recess 6a, 10b, 10c is one step higher than the upper surface side of the butt surface 6c. 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 butting surfaces 6a and 6b of one split panel 3B and the butting surfaces 6c of the other split panels 3A and 3C sandwich the respective split lines C. A plurality of divided projections 7a, 7b, 7c are fitted into the plurality of fitting recesses 10a, 10b, 10c, and a plurality of divided panels 3A, 3B, 3C are connected to each other. 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 panel 3A, 3C are abutted 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, a protrusion slightly protruding from the periphery of the fitting convex portions 7a, 7b, 7c. When the fitting protrusions 7a, 7b, and 7c are fitted inside the fitting recesses 10a, 10b, and 10c, the protrusion 11 is crushed.

  In the main body panel 2, the outer side of the pair of slits 4a and 4b is elastically deformable in the direction in which the width of the pair of slits 4a and 4b becomes narrower. Thereby, in the underfloor heat insulating material 1, when the main body panel 2 is fitted between the large drawing or joists constituting the floor assembly described above, the main body panel 2 can be adhered to the large drawing or joists. is there. The pair of sub-slits 4c and 4d breaks when the body panel 2 is elastically deformed in the direction in which the width of the pair of slits 4a and 4b becomes narrower outside the pair of slits 4a and 4b of the body panel 2. To prevent 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, 3C. Each of the divided panels 3A, 3B, 3C is made of a foamed resin molded body obtained by vertical molding. Thereby, it is possible to increase the number of division | segmentation panels 3A, 3B, and 3C which can be taken out from a metal mold | die by one shaping | molding. In addition, when the divided panels 3A, 3B, and 3C smaller than the main body panel 2 are formed, the mold can be made smaller than when the single main body panel 2 is formed, so that the manufacturing cost can be reduced.

  Moreover, in the underfloor heat insulating material 1 of this embodiment, even if it rains after laying between floor sets, 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 are views for explaining the drainage performance of the main body panel 2, wherein FIG. 5A is a perspective view showing the path of the rainwater W, and FIG. 5B is an enlarged perspective view of the enclosing portion B. . In FIGS. 5A and 5B, the path of the rainwater W is schematically indicated by arrows.

  In the underfloor heat insulating material 1 of the present embodiment, when rain falls on the surface of the main body panel 2, the rain water W extends along the inclined surfaces 5a and 5b of the divided panels 3A, 3B, and 3C, and the one divided panel 3B. Flows into the groove 12 formed between the butted surfaces 6a and 6b and the butted surfaces 6c of the other divided panels 3A and 3C.

  That is, the corners between the abutting surfaces 6a and 6b of the one divided panel 3B and the abutting surfaces 6c of the other divided panels 3A and 3C are chamfered, and the chamfered corner portions are chamfered. Rainwater W flows into the inside of the groove 12 formed therebetween. Note that the surfaces of the divided panels 3A, 3B, and 3C have water repellency due to the above-described EPS. Therefore, it is difficult for rainwater W to accumulate on the surfaces of the divided panels 3A, 3B, and 3C.

  The rainwater W that has flowed into the inside of the groove portion 12 flows into the inside of the pair of slits 4 a and 4 b along the groove portion 12. Rainwater W that has flown 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 portion 9.

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

In addition, this invention is not necessarily limited to the thing of the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.
For example, the underfloor heat insulating material 1 has a configuration in which the main body panel 2 is divided into three divided panels 3A, 3B, and 3C, but the number of divisions of the main body panel 2 can be changed as appropriate. .

  Moreover, in the said underfloor heat insulating material 1, although it has the structure by which the main body panel 2 was divided | segmented into the some division | segmentation panel 3A, 3B, 3C substantially equally, it is also possible to divide the main body panel 2 by a different size. . Moreover, in the said underfloor heat insulating material 1, what differs in size in several division | segmentation panels 3A, 3B, 3C is prepared, and it is also possible to change the size (full length) of the main body panel 2 suitably by the combination.

  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 each of the divided panels 3A, 3B, and 3C, but the upper surface (one surface) of each of the divided panels 3A, 3B, and 3C. It is also possible to provide the inclined surfaces 5a and 5b only on the lower surface (other surfaces) of the divided panels 3A, 3B and 3C.

  The underfloor heat insulating material 1 has a fitting structure in which the fitting convex portions 7a, 7b, and 7c are fitted to the fitting concave portions 10a, 10b, and 10c described above as a connecting structure. The structure can be changed as appropriate. Furthermore, it is good also as a structure connected using a connector etc. instead of the fitting structure mentioned above.

  Moreover, in the said underfloor heat insulating material 1, although it has the structure by which the groove part 9 was provided in the abutting surface 6a, 6b of one division | segmentation panel 3B, the groove part 9 was provided in the abutting surface 6c of the other division | segmentation panel 3A, 3C. It is good also as a structure.

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

  DESCRIPTION OF SYMBOLS 1 ... Underfloor heat insulating material 2 ... Main body panel 2a, 2b ... Side surface 3B ... One division | segmentation panel 3A, 3C ... The other division | segmentation panel 4a, 4b ... Slit 4c, 4d ... Sub slit 5a, 5b ... Inclined surface 6a, 6b, 6c ... butting surfaces 7a, 7b, 7c ... fitting protrusions 8a, 8b ... step parts 9 ... grooves 10a, 10b, 10c ... fitting depressions C ... dividing lines P ... ridge lines (particle lines)

Claims (7)

Underfloor insulation laid between floor sets,
It has a main body panel made of a foamed resin molding,
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 have a connection structure that is connected to each other between a butted surface of one divided panel and the butted surface of the other divided panel that are abutted across the dividing line. Underfloor insulation.   The underfloor heat insulating material according to claim 1, wherein the divided panel has a pair of inclined surfaces that are inclined at least on one side or both sides with a ridge line in a direction along the dividing line interposed therebetween. The main body panel has a pair of slits formed on both sides in the 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 or 2, wherein an outer side of the pair of slits of the main body panel is elastically deformable in a direction in which the width of the pair of slits is narrowed.   The underfloor heat insulating material according to claim 3, wherein the divided panel has a groove portion that discharges rainwater that has flowed into the slit to the outside on any one of the butted surfaces.   The underfloor heat insulating material according to claim 4, wherein the groove portion communicates from a bottom surface of the slit toward a side surface that intersects the butting surface of the divided panel.   The connection structure includes a fitting convex portion provided on the abutting surface of the one divided panel and a fitting concave portion provided on the abutting surface of the other divided panel. The underfloor heat insulating material according to any one of claims 1 to 5, wherein a fitting convex portion is fitted.   The underfloor heat insulating material according to claim 6, wherein the butted surface of the one divided panel and the butted surface of the other divided panel have a pair of stepped portions that are butted against each other.

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