JP6252899B2 - Insulation - Google Patents

Description

  The present invention relates to a heat insulating material formed by combining two foam heat insulating plates obtained by extrusion foaming a foam material.

  As an example of this type of conventional heat insulating material, there is a heat insulating material described in Patent Document 1 formed by laminating foam heat insulating plates. In this heat insulating material, for each of the two foam heat insulating plates to be laminated, both end surface portions in a direction orthogonal to the extrusion direction of the foam material of the foam heat insulating plate are inclined and protruded.

  The heat insulating material configured in this way is fitted into a frame body having an inter-frame size that matches the size between the end surface portions of the foam heat insulating plate whose both end surface portions are not inclined and protruded (formed on the vertical surface). Thermal insulation can be provided.

  The heat insulating material is fitted between the frames when the end surface portion of the foam heat insulating plate having an inclined surface is pressed against the frame and elastically deformed, and is disposed in the frame without a gap. In addition, the end surface portion in the direction orthogonal to the extrusion direction of the foam heat insulating plate is easily elastically deformed by pressing due to its structure, and the end surface portion of the foam heat insulating plate in that direction is further elastically deformed by using an inclined surface. It is easy to let them. Therefore, the heat insulating material can be fitted between the frames more smoothly and can be firmly fitted.

JP 2011-132716 A

  However, according to the heat insulating material of the above-mentioned document, if there is a molding error in the size of the heat insulating material, not only can the end surface in the extrusion direction be expected to be elastically deformed by pressing, but the heat insulating material can be fitted between the frames. May be difficult to remove.

  The present invention has been proposed in view of such circumstances, and an object of the present invention is to provide a heat insulating material that can be smoothly fitted between frames and can be firmly attached.

In order to achieve the above object, the heat insulating material of the present invention is a heat insulating material formed by combining a first foam heat insulating plate obtained by extrusion foaming a foam material and a second foam heat insulating plate obtained by extrusion foaming the foam material. The second foam heat insulating plate is fixed to at least one end surface portion of the end surfaces in the extrusion direction of the first foam heat insulating plate so that the extrusion direction thereof is a direction orthogonal to the extrusion direction of the first foam heat insulating plate. In consideration of the elastic contraction of the end face in the direction perpendicular to the extrusion direction of the first foam insulation board, the length of the second foam insulation board is shortened to The heat insulating material is formed by being recessed .

Another heat insulating material of the present invention is a heat insulating material formed by combining a first foam heat insulating plate obtained by extruding and foaming a foam material and a second foam heat insulating plate obtained by extruding and foaming the foam material. The plate is disposed so as to be adjacent to at least one of the end surface portions in the extrusion direction of the first foam heat insulating plate so that the extrusion direction thereof is a direction orthogonal to the extrusion direction of the first foam heat insulating plate. The first foam heat insulating plate and the second foam heat insulating plate are each a concave body having protrusions projecting in the thickness direction at both ends in the direction orthogonal to the respective extrusion directions, and the inner bottom portion of the concave body. They are fixed to each other so that the extrusion directions of the foam heat insulating plates are orthogonal to each other, and the protrusions of the second foam heat insulating plates are fixed to the end surface portions of the first foam heat insulating plates .

  In the present invention, the central portion of the inner bottom portion of at least one of the first foam heat insulation plate and the second foam heat insulation plate has a recess that opens from the end portion to the other end portion along the longitudinal direction of the protrusion. Further, it may be formed by digging, and the main body portion of the vacuum heat insulating material may be disposed in the recess, and the fin portion of the vacuum heat insulating material may be disposed on the edge of the inner bottom portion outside the recess.

  According to the heat insulating material of this invention, since it becomes the above-mentioned structure, the fitting between frames can be performed smoothly and firm attachment can also be performed.

It is explanatory drawing of the heat insulating material which concerns on one Embodiment of this invention. (A) is an exploded perspective view of the heat insulating material, (b) is a perspective view of the heat insulating material, and (c) is an enlarged view of an X portion of (a) (an end surface portion of the first foam heat insulating plate which is a constituent member of the heat insulating material). It is a side view. (A), (b) is a top view for demonstrating the 2 aspect of the mounting | wearing form to a frame with a heat insulating material. It is explanatory drawing of the heat insulating material which concerns on other embodiment of this invention. (A) is a disassembled perspective view of a heat insulating material, (b) is a top view of the heat insulating material which made the 1st foam heat insulating board side the upper surface side. It is a further explanatory view of the heat insulating material shown in FIG. (A) is a plan view of a heat insulating material with the second foam heat insulating plate side as an upper surface side (a rear view corresponding to the plan view of FIG. 3B), and (b) is the heat insulating material shown in FIG. The side view seen from the direction, (c) is a side view of the heat insulating material shown in (a) seen from the B direction. It is explanatory drawing of the heat insulating material which concerns on other embodiment of this invention. (A) is a plan view with the laminated surface side of the second foam heat insulating plate constituting the heat insulating material as the upper surface side, (b) is a side view of the second foam heat insulating plate shown in (a) as seen from the C direction, (C) is the side view which looked at the 2nd foam heat insulation board shown to (a) from the D direction. (A) is the top view which made the lamination | stacking surface side of the 2nd foam heat insulating board of the state which arranged the vacuum heat insulating material the upper surface side, (b) looked at the 2nd foam heat insulating board shown to (a) from E direction. A side view and (c) are exploded perspective views of a heat insulating material.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  The heat insulating materials 1, 1, 1 (see FIGS. 1 to 6) according to the following plurality of embodiments are heat insulating materials that are disposed and installed on construction objects such as floors, walls, and ceilings. For example, the heat insulating material 1 is arrange | positioned under the joist between the floors.

  These heat insulating materials 1 are heat insulating materials formed by combining a first foam heat insulating plate 10 obtained by extrusion foaming a foam material and a second foam heat insulating plate 20 obtained by extrusion foaming the foam material (see FIG. 1 and the like). .

  These heat insulating materials 1 are the end surfaces 11 in the extrusion direction of the first foam insulation board 10 such that the extrusion direction of the second foam insulation board 20 is orthogonal to the extrusion direction of the first foam insulation board 10. , 11 so as to be adjacent to at least one end face part 11.

Next, the heat insulating materials according to a plurality of embodiments will be described individually.
1 and 2 are explanatory views of a heat insulating material according to an embodiment of the present invention.

  This heat insulating material 1 is configured by combining a first foam heat insulating plate 10 and two second foam heat insulating plates 20 and 20. The first foam heat insulating plate 10 is a rectangular plate that forms the main part at the center of the plane of the heat insulating material 1, and the second foam heat insulating plates 20, 20 are fixed to both end surface portions of the first foam heat insulating plate 10. It is a pair of rod-shaped bodies made.

  These first and second foam heat insulating plates 10, 20, and 20 are formed by extrusion foaming a foam material. As the foamed material, a polyolefin resin containing cellulose or starch is used. More specifically, the foamed material includes polypropylene, waste paper, and starch.

  The end faces 12, 12 (side surfaces) and the front and back surfaces parallel to the extrusion direction of the first foam heat insulating plate 10 (in the direction orthogonal to the extrusion direction) and the front and back surfaces are extruded from the end in the extrusion direction toward the other end. The pattern depends on the direction and the material flow. Of course, when cut along the extrusion direction, a similar pattern appears on the cut surface. Although this pattern is not a fixed repeating pattern, it has a linear directivity, and in the drawings, a schematic dotted horizontal stripe pattern is added to the end face 12 in FIGS. 1 (a) and 1 (b). Showed. In addition, illustration of this pattern to the front and back of the heat insulating material 1 was abbreviate | omitted.

  Moreover, the opening of the several small communicating cavity 13 and 13 by extrusion molding as shown in FIG.1 (c) appears regularly in the both end surface parts 11 and 11 of the extrusion direction of the 1st heat-insulating board 10. Yes. The communication cavities 13 and 13 communicate from the end surface portion 11 to the other end surface portion 11, and even when cut in a direction orthogonal to the extrusion direction, a pattern similar to that of the end surface portion 11 appears on the cut surface. . In addition, since the 2nd foam heat insulation board 20 is being fixed to the whole, the both end surface parts 11 and 11 of the extrusion direction of the 1st heat insulation board 10 are not exposed. In the drawing, the end face portion 11 of the exploded perspective view of FIG.

  The 2nd foam heat insulation board 20 is also shape | molded by the extrusion foaming by the same shaping | molding method. Therefore, on the end surface portion 22 and the front and back surfaces (surfaces arranged on the front and back surfaces as the heat insulating material 1) parallel to the extrusion direction (in the direction orthogonal to the extrusion direction), the end portions in the extrusion direction are directed to other end portions. The pattern depends on the direction of extrusion and the material flow. In the drawings, in FIGS. 1 (a) and 1 (b), a schematic dotted horizontal stripe pattern is given only to the end face portion 22 that appears on the end face of the heat insulating material 1.

  In addition, the openings of the plurality of minute communication cavities 13, 13 appear regularly at both end surface portions 21, 21 in the extrusion direction of the second heat insulating heat insulating plate 20, similarly to the end surface portion 11 of the first foam heat insulating plate 10. ing. In the drawing, a cross-hatching pattern is schematically given to the end surface portion 21 of the exploded perspective view of FIG.

  As described above, since the first and second foam heat insulating plates 10 and 20 are formed with a plurality of minute communication cavities 13 and 13 communicating in the extrusion direction, an external force is applied along the direction orthogonal to the extrusion direction. When added, it is easily elastically deformed. In particular, when the end surface portions 12 and 22 in the direction orthogonal to the extrusion direction are pressed, the first and second foam heat insulating plates 10 and 20 are elastically contracted. On the other hand, when the end surface portions 11 and 21 in the extrusion direction are pressed, the deformation is little or even if deformed, compared with the elastic deformation in the direction orthogonal to the extrusion direction. In addition, in this heat insulating material 1, since the end surface part 11 of the extrusion direction of the 1st foam heat insulation board 10 is not exposed, the end surface part 11 is not pressed directly.

  In the present embodiment, as the first and second foam heat insulating plates 10 and 20 shown in the present specification, those having a plurality of communication cavities 13 and 13 were used, but manufactured using other extrusion molding means. You may comprise the heat insulating material 1 using the 1st, 2nd foam heat insulation board 10 and 20 of another internal structure. What is necessary is just to use the foam heat insulating board which is easy to elastically deform with respect to the direction orthogonal to the extrusion direction manufactured by extrusion foaming at least.

  The 1st foam insulation board 10 and the pair of 2nd foam insulation boards 20 and 20 which have such a structure are the 2nd foam insulation boards 20 and 20 centering the 1st foam insulation board 10 in the center. The heat insulating material 1 is constituted by being fixed to the end surface portions 11 and 11 so as to be sandwiched.

  Specifically, as shown in FIG. 1A, the heat insulating material 1 is such that the second foam heat insulating plates 20, 20 are in the direction orthogonal to the extrusion direction of the first foam heat insulating plate 10. Further, the first foam heat insulating plate 10 is disposed and fixed so as to be adjacent to both end surface portions 11 in the extrusion direction.

  Thus, in the heat insulating material 1 which combined two types of foam heat insulating boards as mentioned above, as shown to FIG.1 (a), (b), in each end surface 1a, 1a of the one opposite side, The end face portion 22 in the direction orthogonal to the extrusion direction of the second foam heat insulating plate appears as it is. Moreover, as shown to Fig.1 (a), (b), the end surface part 12 of the direction orthogonal to the extrusion direction of the 1st foam heat insulation board 10 is provided in each end surface 1a, 1a of the other opposite side with two. The combination surface arranged so that it may be pinched | interposed by the end surface parts 21 and 21 of the extrusion direction of the 2nd foam heat insulation board 20 and 20 appears.

  Thus, since the end face portions 12 and 22 in the direction orthogonal to the extrusion direction of the foam heat insulating plate appear greatly in any of the opposite end faces 1a and 1a of the heat insulating material 1, it is easily elastically deformed in any end face, It is easy to elastically shrink by pressing from

  Therefore, when this heat insulating material 1 is fitted between the two frame bodies 3 and 3 or in the quadrilateral frame body 5, the end surface 1 a formed by the end surface portion 22 of the second foam heat insulating plate 20 is easily elastically contracted. Therefore, it can be inserted smoothly (see FIGS. 2A and 2B). In addition, after the heat insulating material 1 is fitted, an elastic restoring force in a direction orthogonal to the extrusion direction acts, so that the heat insulating material 1 can be kept firmly engaged.

  These effects appear greatly when the size of the heat insulating material 1 is slightly larger than the size between the frames 3 and 3 and the size within the four-frame frame 5 due to molding errors. In particular, when a strong fitting is to be achieved, it is desirable to use a larger heat insulating material 1 in anticipation of an elastic return action. If the heat insulating material 1 is made larger, it will be difficult to fit, but if the corners are chamfered or rounded to facilitate fitting, the fitting work can be facilitated.

  In addition, when arrange | positioning the heat insulating material 1 between the two frames 3, 3, the 2nd foam heat insulation board 20 which made the whole end surface easy to elastically deformed was arranged as illustrated to Fig.2 (a). It is desirable to arrange the end face 1 a so as to be in contact with the frame 3. Moreover, although the end surface 1a of the other foaming direction of the 2nd foam heat insulating board 20 which is hard to elastically deform is appearing at both ends, the end surface 1a of the other opposite side appears, but since it is both ends and is very slight, there is almost no problem. . In that case, the lengths of the second foam heat insulating plates 20 and 20 that are rod-shaped bodies are taken into consideration that the end face portions 12 and 12 in the direction perpendicular to the extrusion direction of the first foam heat insulating plate 10 are elastically contracted. The heat insulating material 1 may be formed by slightly shortening and denting both ends.

  Next, a heat insulating material according to another embodiment of the present invention will be described with reference to FIGS. 3 and 4. The first and second foam heat insulating plates 10 and 20 constituting the heat insulating material 1 are formed by extrusion foaming in the same manner as in FIG.

  This heat insulating material 1 is also configured by combining a first foam heat insulating plate 10 and a second foam heat insulating plate 20. The first foam heat insulating plate 10 and the second foam heat insulating plate 20 are formed into concave bodies having protrusions 15, 15, 25, 25 in which both end portions in the direction orthogonal to the respective extrusion directions protrude in one of the thickness directions. Yes. The inner bottom portions 16 and 26 of the concave bodies are fixed to each other so that the extrusion directions of the foam heat insulating plates are orthogonal to each other, and the protrusions 25 and 25 of the second foam heat insulating plate 20 are end faces of the first foam heat insulating plate. It is fixed to the parts 11 and 11. Moreover, the protrusions 15 and 15 of the 1st foam heat insulation board are being fixed to the end surface part 21 of a 2nd foam heat insulation board.

  On the end surface portions 12 and 12 (projections 15 and 15) parallel to the extrusion direction of the first foam heat insulating plate 10 (in the direction orthogonal to the extrusion direction) and the front and back surfaces, from the end portion in the extrusion direction to the other end portion. The pattern depends on the direction of extrusion and the material flow. Of course, when cut along the extrusion direction, a similar pattern appears on the cut surface. Although this pattern is not a constant repeating pattern, it has a linear directivity, and in the drawing, a schematic dotted horizontal stripe pattern is formed on the end surface portion 12 and the surface of the exploded perspective view of FIG. Attached.

  Moreover, the opening of the several micro communicating cavity 13 and 13 (refer FIG.1 (b)) by extrusion molding appears regularly in the both end surface parts 11 and 11 of the extrusion direction of the 1st heat insulation board 10. As shown in FIG. The communication cavities 13 and 13 communicate from the end surface portion 11 to the other end surface portion 11, and even when cut in a direction orthogonal to the extrusion direction, a pattern similar to that of the end surface portion 11 appears on the cut surface. . It should be noted that both end surface portions 11, 11 in the extrusion direction of the first heat insulating heat insulating plate 10 are not exposed because the protrusions 25, 25 of the second foam heat insulating plate 20 are fixed to the whole. In the drawing, the end face portion 11 of the exploded perspective view of FIG.

  The 2nd foam heat insulation board 20 is also shape | molded by the extrusion foaming by the same shaping | molding method. Therefore, the end surface portions 22 and 22 and the front and back surfaces parallel to the extrusion direction (in the direction orthogonal to the extrusion direction) have a pattern depending on the direction of extrusion molding from the end portion in the extrusion direction to the other end portion and the material flow. Appears. In the drawing, in the exploded perspective view of FIG. 3A, a schematic dotted horizontal stripe pattern is given to the end surface portion 22 and the inner bottom surface that appear on the outer surface of the heat insulating material 1.

  In addition, a plurality of minute communication cavities 13 and 13 (see FIG. 1B) are provided on both end surface portions 21 and 21 in the extrusion direction of the second heat insulating heat insulating plate 20 in the same manner as the end surface portion 11 of the first foam heat insulating heat plate 10. ) Openings appear regularly. In the drawing, a cross-hatching pattern is schematically given to the end surface portion 21 of the exploded perspective view of FIG. Since both ends 21 and 21 of the second heat-generating heat insulating plate 20 in the extruding direction are fixed to the entire surface excluding both ends, the protruding portions 15 and 15 of the first foam heat insulating plate 10 are fixed. 4 (b)).

  As described above, since the first and second foam heat insulating plates 10 and 20 are formed with a plurality of minute communication cavities 13 and 13 communicating in the extrusion direction, an external force is applied along the direction orthogonal to the extrusion direction. When added, it is easily elastically deformed. In particular, when the end surface portions 12 and 22 in the direction orthogonal to the extrusion direction are pressed, the first and second foam heat insulating plates 10 and 20 are elastically contracted. On the other hand, when both end surface portions 11 and 21 in the extrusion direction are pressed, even if they are hardly deformed or deformed, the amount of deformation is small compared to the amount of elastic deformation in the direction orthogonal to the extrusion direction.

  As the first and second foam heat insulating plates 10 and 20 shown in the present specification, those having a plurality of communication cavities 13 and 13 were used, but other internal parts manufactured using other extrusion molding means were used. You may comprise the heat insulating material 1 using the foaming heat insulating board of a structure. What is necessary is just to use the foam heat insulating board which is easy to elastically deform with respect to the direction orthogonal to the extrusion direction manufactured by extrusion foaming at least.

  Each of the first foam insulation board 10 and the second foam insulation board 20 having such a structure has respective recesses (inner bottom parts 16, 26) so that the concave bodies are engaged with each other. It is fixed in a closed state.

  Since the first and second foam heat insulating plates 10 and 20 are combined as described above, the present heat insulating material 1 has, as shown in FIG. 4 (c), the entire end surface 1a on one side of the opposite side. The end face portion 22 in the direction orthogonal to the extrusion direction of the second foam heat insulating plate 20 appears as it is. Moreover, as shown in FIG.4 (b), the end surface part 12 (direction of the protrusion 15) of the direction orthogonal to the extrusion direction of the 1st foam heat insulation board 10 is set to each end surface 1a of the other opposite side to 2nd. The combination surface arranged so that it may be pinched | interposed by the edge part 21 of the protrusions 25 and 25 of the foam heat insulation board 20 appears. That is, the end faces 1a and 22 in the direction orthogonal to the extrusion direction of the foam heat insulating plate mainly appear on the opposite end face 1a of the heat insulating material 1 as in the heat insulating material 1 shown in FIG.

  Thus, in any end face 1a, 1a of the heat insulating material 1, since the end face parts 12, 22 in the direction orthogonal to the extrusion direction of the foam heat insulating plate appear greatly, it is easy to elastically deform in any end face 1a, 1a, It is easy to elastically shrink by pressing from the surroundings.

  Therefore, when the heat insulating material 1 is fitted between the two frames 3 and 3 or in the quadrilateral frame 5, the end surface 1a is easily elastically contracted, so that it can be smoothly fitted (FIG. 2). reference). In addition, after the heat insulating material 1 is fitted, an elastic restoring force in a direction orthogonal to the extrusion direction acts, so that the heat insulating material 1 can be kept firmly engaged. In addition, since it was the same as that of the heat insulating material 1 of FIG. 1 about the fitting construction between the two frame bodies 3 and 3 of this heat insulating material 1 or in the quadrilateral frame body 5, illustration was abbreviate | omitted.

  These effects appear greatly when the size of the heat insulating material 1 is slightly larger than the size between the frames 3 and 3 and the size within the four-frame frame 5 due to molding errors. In particular, when a strong fitting is to be achieved, it is desirable to use a larger heat insulating material 1 in anticipation of an elastic return action. If the heat insulating material 1 is made larger, it is difficult to fit, but if the corners are easily fitted by chamfering or rounding, the fitting is easy.

  Moreover, according to the heat insulating material 1 which concerns on this embodiment, since it is the structure which laminated | stacked the 1st, 2nd foam heat insulating board 10 and 20, the heat insulating material 1 can be formed thickly and firmly, and a high heat insulation effect is acquired. You can also.

  Furthermore, since it is set as the layer structure of the 1st, 2nd foam heat insulation board 10 and 20, another vacuum heat insulating material can also be arrange | positioned among them. The heat insulating material 1 shown in FIG. 5 and FIG. 6 is explanatory drawing of the heat insulating material which contains a vacuum heat insulating material inside. The first and second foam heat insulating plates 10 and 20 constituting the heat insulating material 1 are also formed by extrusion foaming in the same manner as in FIG.

  The heat insulating material 1 is configured by laminating and fixing the first and second foam heat insulating plates 10 and 20 by engaging the concave bodies as in the heat insulating material 1 of FIG.

  As shown in FIG. 6 (c), a vacuum heat insulating material 30 is sandwiched between the inner bottom portions 16 and 26 of the first and second foam heat insulating plates 10 and 20 of the heat insulating material 1. The vacuum heat insulating material 30 is formed so that the planar external dimensions are smaller than the external dimensions of the heat insulating material 1 so as not to protrude from the side ends when sandwiched between the inner bottom portions 16 and 26 of the foam heat insulating plates. . Moreover, the vacuum heat insulating material 30 has the main-body part 31 armored with the aluminum packaging material, and the fin parts 32 and 32 formed by heat-welding the edge part of the aluminum packaging material of the both ends.

  The main body 31 includes a core material (not shown) made of a foamed material such as urethane foam, styrene foam, or phenol foam. In addition, as the core material, it may be made by pulverizing various foam materials, or it may be made of powder particles such as silica, alumina, pearlite, etc., and it is made of fiber bodies such as glass fiber, glass wool, rock wool, cellulose fiber, etc. Also good.

  As shown in FIGS. 5A and 5B, the inner bottom portion 26 of the second foam heat insulating plate 20 is further formed with a concave portion 27. This recess 27 is formed by extrusion foaming, and as shown in FIGS. 5A and 5B, at the center in the direction orthogonal to the extrusion direction, the other end from the end in the extrusion direction. It is dug so as to communicate to the end. That is, the portions of both end portions of the inner bottom portion 26 of the foam heat insulating plate 20 in the direction orthogonal to the extrusion direction are the edge surfaces 28 and 28 fixed to the inner bottom portion 16 of the first foam heat insulating plate 10.

  A vacuum heat insulating material 30 is accommodated in the recess 27 of the inner bottom portion 26 of the second foam heat insulating plate 20. More specifically, as shown in FIG. 6A, the main body 31 of the vacuum heat insulating material 30 is disposed in the recess 27, and the vacuum heat insulating material 30 of the vacuum heat insulating material 30 is disposed on the outer edge surfaces 28 and 28 of the recess 27. Fins 32, 32 are arranged. That is, the width dimension of the recess 27 may be a dimension that can accommodate the main body 31 of the vacuum heat insulating material 30.

  Further, flat additional heat insulating materials 35 and 35 are accommodated in the portions of the recess 27 in the extrusion direction where the main body portion 31 of the vacuum heat insulating material 30 is not disposed. Even if the additional heat insulating materials 35 and 35 are not accommodated, it can be configured as the heat insulating material 1, but it is desirable to fill the empty space in the recess 27 with the additional heat insulating materials 35 and 35 in order to ensure an excellent heat insulating effect. . As these additional heat insulating materials 35 and 35, what was manufactured with the same kind of material as the 1st and 2nd foam heat insulating boards 10 and 20 should just be used.

  As shown in FIGS. 6 (b) and 6 (c), in the state in which the vacuum heat insulating material 30 is arranged in the recess 27 of the second foam heat insulating plate 20, the first foam heat insulating plate 10 is arranged thereon. The heat insulating material 1 having the same outer shape as that of the heat insulating material 1 shown in FIG.

  Thus, by providing the recess 27 in the inner bottom portion 26, it is possible to prevent the vacuum heat insulating material 30 sandwiched between the first and second foam heat insulating plates 10 and 20 from being damaged. Further, the fin portions 32, 32 are sandwiched between the edge portions 28, 28 and the inner bottom portion 16 of the first foam heat insulating plate 10 without any gaps, and are fixed in a thinly extended state. There is no fear of becoming.

  As described above, since the heat insulating material 1 is configured by sandwiching the vacuum heat insulating material 30, an excellent heat insulating effect can be achieved.

  Further, the heat insulating material 1 is the same as the heat insulating material 1 shown in FIG. 3 in terms of its outer shape, and as shown in FIG. 6C, the second foam heat insulating plate is formed on the entire end surface 1a of one opposite side. The end face portion 22 in the direction orthogonal to the extrusion direction of 20 appears as it is. Furthermore, the end surface portion 12 (of the protrusion 15) in the direction orthogonal to the extrusion direction of the first foam heat insulating plate 10 is provided on each end surface 1a of the other opposite side in the extrusion direction of the two second foam heat insulation plates 20. A combination surface arranged so as to be sandwiched between the end surface portions 21 and 21 appears.

  Therefore, since the end surface portions 12 and 22 in the direction orthogonal to the extrusion direction of the foam heat insulating plate also appear greatly in any of the end surfaces 1a and 1a, the heat insulating material 1 is easily elastically deformed in any of the end surfaces 1a and 1a. Easily elastically shrinks when pressed from the surroundings. Therefore, the same effect as that of the heat insulating material 1 in FIG. 3 can be obtained with respect to the fitting between the frame bodies 3 and 3 or in the quadruple frame body 5 (see FIG. 2).

  The recess 27 may be provided only in the second foam heat insulating plate 20 as shown in the figure, or may be provided so as to face both the foam heat insulating plates. When providing a recess in both foam heat insulation boards, since the 1st foam heat insulation board 10 must form a recess along the direction orthogonal to an extrusion direction, the recess is formed by cutting after extrusion molding. do it.

  Moreover, you may use the 2nd foam heat insulation board 20 which has the recess 27 which matched the planar shape of the main-body part 31 of the vacuum heat insulating material 30 by other means, such as cutting. If it does in this way, it is not necessary to use the additional heat insulating materials 35 and 35, and the heat insulating material 1 can be assembled efficiently.

DESCRIPTION OF SYMBOLS 1 Heat insulating material 1a End surface 3 Frame 5 Quadruple frame 10 1st foam heat insulation board 11 End surface part 12 of an extrusion direction 12 End surface part of the direction orthogonal to an extrusion direction 13 Communication cavity 15 Protrusion 16 Inner bottom part 20 2nd foam heat insulation board 21 End surface portion 22 in the extrusion direction End surface portion in the direction orthogonal to the extrusion direction 25 Projection portion 26 Inner bottom portion 27 Recess portion 28 Edge surface portion 30 Vacuum heat insulating material 31 Main body portion 32 Fin portion 35 Additional heat insulating material

Claims (3)

In a heat insulating material formed by combining a first foam heat insulating plate obtained by extrusion foaming a foam material and a second foam heat insulating plate obtained by extrusion foaming the foam material,
At least one end surface portion of the end surfaces in the extrusion direction of the first foam insulation board so that the extrusion direction of the second foam insulation plate is perpendicular to the extrusion direction of the first foam insulation board. It is composed of a rod-like heat insulating material fixed to
In consideration of elastic shrinkage of the end face portion in the direction orthogonal to the extrusion direction of the first foam heat insulating plate, the length of the second foam heat insulating plate is shortened and both ends are recessed to form the heat insulating material. heat insulating material, characterized in that is. In a heat insulating material formed by combining a first foam heat insulating plate obtained by extrusion foaming a foam material and a second foam heat insulating plate obtained by extrusion foaming the foam material,
At least one end surface portion of the end surfaces in the extrusion direction of the first foam insulation board so that the extrusion direction of the second foam insulation plate is perpendicular to the extrusion direction of the first foam insulation board. Arranged adjacent to
The first foam heat insulating plate and the second foam heat insulating plate are concave bodies having protrusions projecting in the thickness direction at both ends in the direction orthogonal to the respective extrusion directions. The bottoms are fixed so that the extrusion directions of the foam heat insulating plates are orthogonal to each other, and the protrusion of the second foam heat insulating plate is fixed to the end surface portion of the first foam heat insulating plate. Insulation. In Claim 2 , The center part of the said inner bottom part of at least one of the said 1st foam heat insulation board and the said 2nd foam heat insulation board was open | released from the edge part to the other edge part along the longitudinal direction of the said protrusion. The recess is further dug and formed,
A heat insulating material characterized in that a main body portion of a vacuum heat insulating material is disposed in the recess, and a fin portion of the vacuum heat insulating material is disposed on an edge of the inner bottom portion outside the recess .

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