Heat insulating material support and construction method of underfloor heat insulation structure

Abstract

To provide a heat insulating material support that can construct an underfloor heat insulation structure not having heat insulating loss with excellent workability.SOLUTION: A heat insulating material support 1 receives and supports, from the lower surface side, both of a first heat insulating material 30 placed between columnar objects 10, 20 and a second heat insulating material 40 placed directly below a small floor joist 20. The heat insulating material support has side pieces 2 and support pieces 3 and is formed to be lockable to the small floor joist 20. The support piece 3 has a first support piece 3A extended from the side piece 2 and stretching to the arrangement space side of the first heat insulating material 30 and a second support piece 3B extended from the side piece and stretching to the arrangement space side of the second heat insulating material 40.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to an insulation material support, and more particularly to an insulation material support that holds insulation material placed between pillar-like objects such as joists and floor joists in wooden buildings, and a construction method for an underfloor insulation structure using the insulation material support. [Background technology]

[0002] In wooden buildings, it is common to place insulation between pillars such as joists and floor joists to enhance the thermal insulation effect of the building. In this case, insulation supports are usually attached to pillars such as joists and floor joists, and the insulation is held by the insulation supports, thereby placing the insulation between the pillars.

[0003] Examples of heat insulating material supports used in this manner include those disclosed in Patent Documents 1 to 4. The heat insulating material supports disclosed in these documents consist of an upper piece, side pieces, and support pieces extending from the side pieces into the heat insulating material arrangement space, with the upper piece and side pieces forming a U-shaped portion with an opening downward, and the U-shaped portion clamps a pillar-shaped object from above to be engaged with the pillar-shaped object, and the heat insulating material is held between the pillar-shaped objects by having the support pieces extending from the side pieces support the heat insulating material. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Jikko No. 57-33123 [Patent Document 2] Japanese Patent Application Laid-Open No. 2009-97265 [Patent Document 3] Japanese Patent Application Laid-Open No. 2008-261114 [Patent Document 4] Japanese Patent Application Laid-Open No. 2009-30406 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0005] However, the conventional insulation supports (hereinafter referred to as "conventional supports") disclosed in the above-mentioned patent documents and the like are not designed to hold insulation placed directly below pillars. Therefore, for example, as shown in FIG. 15 , when the conventional support 100 is used in an underfloor structure reinforced by placing a low-height pillar-like small joist 101 between joists 102, 102, even if a thick insulation material 103 (e.g., insulation material with a thickness approximately equal to the height of the joist) is placed between the pillars 101, 102, a space X where no insulation material is present is formed directly below the small joist 101. Because this space X where no insulation material is present becomes an insulation deficiency, it has been difficult to construct an underfloor insulation structure with good insulation performance. Therefore, as will be described later in the explanation of FIGS. 16(a) and 16(b), construction methods have been adopted that avoid insulation deficiencies. However, such construction methods require many steps and leave room for improvement in terms of workability.

[0006] The present invention has been made in consideration of the problems inherent in the background art described above, and its purpose is to provide an insulation support that can easily construct an underfloor insulation structure without insulation defects, and a construction method for an underfloor insulation structure using the insulation support. [Means for solving the problem]

[0007] In order to achieve the above object, the present invention provides a heat insulation support and an installation method for an underfloor heat insulation structure as described in the following [1] to

[13] . [1] An insulation support device that receives and supports both a first insulation material arranged between pillars and a second insulation material arranged directly below a specific pillar from the underside, The heat insulating material support has side pieces and support pieces, and is formed so as to be able to be engaged with the specific pillar-like object, The support piece has a first support piece extending from the side piece toward the arrangement space of the first insulating material, and a second support piece extending from the side piece toward the arrangement space of the second insulating material. Insulation support. [2] The insulation support described in [1] above, further comprising an upper piece extending from the side piece, the upper piece being engaged with the upper surface of the specific pillar-shaped object. [3] An insulation support according to [1] or [2] above, characterized in that it has two side pieces and an upper piece connecting the side pieces, and the upper piece and the two side pieces form a U-shaped portion with an opening below. [4] An insulation support device as described in [1] or [2] above, characterized in that the second support piece is formed so as to be able to support the entire width of the bottom surface of the second insulation material, and the second support piece and the two side pieces form a U-shaped portion having an opening at the top. [5] An insulation support according to any one of [1] to [4] above, characterized in that the height of the side piece is formed to be approximately the same as the total height of the specific columnar object and the height of the second insulation material arranged directly below the specific columnar object. [6] An insulation support according to any one of [1] to [5] above, characterized in that the first insulation is a single layer of plate-shaped insulation and the height of the side piece is formed to be approximately the same as the thickness of the plate-shaped first insulation. [7] An insulation support according to any one of [1] to [6] above, characterized in that the side pieces are formed with claws for engaging the insulation support with the specific columnar object. [8] An insulation support according to any one of [2] to [7] above, characterized in that the upper piece is formed with a claw for engaging the insulation support with the specific columnar object. [9] An insulation support tool according to any one of [1] to [8] above, characterized in that the first support piece is formed with a claw that digs into the first insulation material.

[10] An insulation support according to any one of [1] to [9] above, characterized in that a reinforcing portion is formed on the support piece by bead processing, and the reinforcing portion is formed across the first support piece and the second support piece.

[11] The heat insulating material support according to any one of [1] to

[10] above, characterized in that the heat insulating material support is formed by bending a single strip of metal.

[12] An insulation support according to any one of [1] to

[11] above, characterized in that the first insulation and the second insulation are both plate-shaped or columnar foams made of foamed resin.

[13] A construction method for an underfloor insulation structure in which a first insulation material arranged between pillars and a second insulation material arranged directly below a specific pillar are both supported from the underside using the insulation material support device described in any one of [1] to

[12] above, a step of placing the second insulating material directly below the specific columnar object, engaging the insulating material support tool with the specific columnar object, and supporting the second insulating material directly below the specific columnar object with the second support piece; and supporting the first insulating material by a first support piece of the insulating material support. How to install underfloor insulation. [Effects of the Invention]

[0008] The insulation support device according to the present invention has support pieces formed in both directions from the side pieces, and can receive and support the first insulation from the underside by the first support piece extending toward the arrangement space of the first insulation material placed between the pillars, and can receive and support the second insulation from the underside by the second support piece extending toward the arrangement space of the second insulation material placed directly below the specific pillar. Therefore, an underfloor insulation structure without insulation defects directly below a specific pillar (for example, a low-height pillar such as a joist or small joist placed between joists) can be constructed with good workability. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view showing an embodiment of a heat insulating material support according to the present invention. [Figure 2]2A to 2C are diagrams of the heat insulating material support shown in FIG. 1, in which (a) is a front view, (b) is a side view, and (c) is a bottom view. [Figure 3] FIG. 10 is a perspective view showing another embodiment of a heat insulating material support according to the present invention. [Figure 4] 4A to 4C are diagrams of the heat insulating material support shown in FIG. 3, in which (a) is a front view, (b) is a side view, and (c) is a bottom view. [Figure 5] 1A and 1B are diagrams showing yet another embodiment of the insulation material support of the present invention, in which (a) is an oblique view of a support formed by splitting the insulation material support shown in FIG. 1 in half, and (b) is an oblique view of a support formed by splitting the insulation material support shown in FIG. 3 in half. [Figure 6] FIG. 2 is a front view showing an example of use of the heat insulating material support shown in FIG. [Figure 7] 5A and 5B are diagrams showing an example of construction of an underfloor insulation structure using an insulation material support according to the present invention, where (a) is a side view of an underfloor insulation structure using the insulation material support shown in FIG. 1, and (b) is a side view of an underfloor insulation structure using the insulation material support shown in FIG. 5A. [Figure 8] 2 is a perspective view showing a state in which a second insulating material placed directly below a specific pillar is supported by the insulating material support shown in FIG. 1. FIG. [Figure 9] FIG. 4 is a front view showing an example of use of the heat insulating material support shown in FIG. 3. [Figure 10] 5A and 5B are diagrams showing another example of construction of an underfloor insulation structure using the insulation material support of the present invention, where (a) is a side view of an underfloor insulation structure using the insulation material support shown in FIG. 3, and (b) is a side view of an underfloor insulation structure using the insulation material support shown in FIG. 5B. [Figure 11] 4 is a perspective view showing a state in which a second insulating material placed directly below a specific pillar is supported by the insulating material support shown in FIG. 3. FIG. [Figure 12] 10A to 10C are perspective views showing still other various embodiments of the heat insulating material support according to the present invention. [Figure 13] 10A to 10C are front views showing still other various embodiments of the heat insulating material support according to the present invention. [Figure 14]These figures show examples of strip-shaped metal pieces used to make the insulation support of the present invention, where (a) is an expanded view of the strip-shaped metal piece used to make the insulation support shown in Figure 1, and (b) is an expanded view of the strip-shaped metal piece used to make the insulation support shown in Figure 3. [Figure 15] FIG. 10 is a side view showing an example of construction of an underfloor insulation structure using a conventional support. [Figure 16] 10A to 10C are side views showing various other construction examples of underfloor insulation structures using conventional supports. DETAILED DESCRIPTION OF THE INVENTION

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the insulation support and the installation method for an underfloor insulation structure according to the present invention will be described in detail with reference to the drawings.

[0011] The insulation support of the present invention (hereinafter simply referred to as "support") is a support for underfloor insulation that receives and supports, from the underside, both a first insulation material placed between pillars and a second insulation material placed directly below a specific pillar in a wooden building.

[0012] In the present invention, the first and second insulating materials are both used in underfloor insulation structures, and can therefore also be referred to as first and second underfloor insulating materials. The term "columnar structures" refers to all columns that form floors in wooden buildings, and any columns between which insulating material is placed. Specific examples include square timbers such as foundations, joists, floor joists, and small floor joists. Meanwhile, the term "specific columns" refers to low-height columns among the columns that form the floor, such as low-height square timbers such as floor joists and small floor joists that are placed between the floor joists for reinforcement. The height of the specific columns is lower than that of the columns. The term "first insulating material" refers to insulating material placed between the columns. While the material and shape of the insulating material are not critical, the first insulating material is typically a plate-shaped insulating material with a thickness similar to the height of the columns, such as floor joists. The second insulating material is an insulating material placed directly below the specific columnar object, and although its material and shape are not important, the second insulating material is usually a columnar insulating material with a width similar to that of the specific columnar object, such as a joist or small joist. The plate-shaped or columnar insulating material may have rounded corners or an uneven surface. Furthermore, in the present invention, terms indicating directions or locations such as "directly below," "underside," "top," "side," and "bottom end" refer to the directions or locations of the insulation support, columnar object, insulation, etc. in the installed state of the insulation support of the present invention, i.e., in the underfloor insulation structure using the insulation support of the present invention. Furthermore, the height of the columnar object refers to the vertical length of the columnar object in the installed state of the insulation support of the present invention (the underfloor insulation structure using the insulation support of the present invention). Similarly, the thickness of the insulation material refers to the vertical length of the insulation material in the installed state of the insulation support of the present invention (the underfloor insulation structure using the insulation support of the present invention). In addition, in the following explanation, the above-mentioned columnar objects correspond to joists, the above-mentioned specific columnar objects correspond to small joists, and an example is given in which the first insulating material is arranged at least between the joists and the small joists, but as mentioned above, the columnar objects etc. of the present invention are in no way limited to joists and small joists.

[0013] As shown in Figures 1 to 5, the insulation support 1 of the present invention has a side piece 2 and a support piece 3, and is formed so as to be able to engage with the specific columnar object, and the support piece 3 has a first support piece 3A extending from the side piece 2 toward the arrangement space of the first insulation material, and a second support piece 3B extending from the side piece 2 toward the arrangement space of the second insulation material.

[0014] Conventional supports are not designed to hold insulation placed directly below a column. As shown in FIG. 15 and described in paragraph

[0005] above, when installing insulation 103 with a thickness approximately equal to the height of the joists, a space X where no insulation exists is formed directly below the small joist 101, resulting in insulation loss in this area. To prevent this, as shown in FIG. 16(a), for example, when installing insulation between columns having a small joist 101 and a joist 102, the usual procedure is to lay a first layer of insulation 103A between the joists 102, 102, with a thickness corresponding to the height of the space directly below the small joist 102, and then fit a second layer of insulation 103B between the small joist 101 and the joist 102, respectively. However, this method requires two layers of construction, which requires a heavy workload and leaves room for improvement in workability. Furthermore, without this two-layer construction, as shown in FIG. 15, a space X is formed directly below the small joist 101. To install insulation in this space X, it is conceivable to separately fix columnar insulation 103C below the small joist 101 using nails, cable ties, staples, etc. 104, as shown in FIG. 16(b). However, this method also does not simplify construction. Furthermore, this method leaves room for improvement in terms of workability when attempting to adequately hold thick insulation 103. Specifically, after fixing insulation 103C below the small joist 101 to increase the holding power of insulation 103, it is necessary to further install a conventional support 100A with a narrow U-shaped portion formed for the small joist to support insulation 103, which further reduces workability.

[0015] The support device 1 of the present invention can solve the above-mentioned problems all at once. That is, the support pieces 3 are formed in both directions from the side pieces 2, and these first and second support pieces 3A, 3B can support both the first and second insulating materials, respectively. Therefore, two-layer construction is not required, the second insulating material can be easily held without using nails, cable ties, staples, etc., and the first insulating material can also be sufficiently held. This makes it possible to easily construct an underfloor insulation structure without insulation defects directly below specific pillars (for example, low-height pillars such as joists and small joists placed between joists).

[0016] It is preferable that the support 1 according to the present invention has two side pieces 2, as shown in Figures 1 and 2, or Figures 3 and 4, i.e., the support 1 has two side pieces 2, but it is also possible that the support 1 has only one side piece 2, as shown in Figures 5(a) and (b). 1 and 2, a support 1 according to the present invention having two side pieces 2 further includes an upper piece 4 connecting the two side pieces 2, 2, and the upper piece 4 and the two side pieces 2, 2 form a U-shaped portion with an opening downward, and a first support piece 3A and a second support piece 3B are provided extending in both directions from the lower ends of the side pieces 2, respectively, making it possible to provide a support formed symmetrically on both sides. Such a support will hereinafter also be referred to as a downward-opening U-shaped support.

[0017] 3 and 4, the support 1 according to the present invention, which has two side pieces 2, can be formed so that the second support piece 3B connects the two side pieces 2, 2 so as to be able to support the entire width of the bottom surface of the second insulating material, and the second support piece 3B and the two side pieces 2, 2 form a U-shaped portion with an opening at the top, and the two side pieces 2, 2 each have a first support piece 3A, 3A protruding outward from the bottom end, making it a support formed symmetrically on both sides. Such a support will hereinafter also be referred to as an upward-opening U-shaped support.

[0018] On the other hand, the support 1 of the present invention having one side piece 2 can be an inverted T-shaped support having a first support piece 3A and a second support piece 3B extending in both directions from the lower end of the side piece 2, as shown in Figures 5(a) and (b).

[0019] The downward-opening or upward-opening U-shaped support device 1 of the present invention, which has two side pieces 2, is suitably used in cases where first insulating materials 30, 30 are arranged on both sides and a second insulating material 40 is arranged directly below the small floor joist 20, such as a small floor joist 20 arranged between joists 10, 10, as shown in Figure 7(a) (a side view showing an example of construction of an underfloor insulation structure using the support device shown in Figures 1 and 2) or Figure 10(a) (a side view showing an example of construction of an underfloor insulation structure using the support device shown in Figures 3 and 4). Furthermore, the inverted T-shaped support 1 of the present invention, which has one side piece 1, is suitably used in cases where a first insulating material 30 is placed on only one side and a second insulating material 40 is placed directly below a small floor joist 20 placed at a corner, as shown in Figure 7(b) (a side view showing an example of construction of an underfloor insulation structure using the support shown in Figure 5(a)) or Figure 10(b) (a side view showing an example of construction of an underfloor insulation structure using the support shown in Figure 5(b)). 7 and 10, the member marked with 100 is a conventional support. However, it is also possible to use two inverted T-shaped supports according to the present invention in the same arrangement as the U-shaped supports.

[0020] The U-shaped support and the inverted T-shaped support according to the present invention may be manufactured separately. Alternatively, the U-shaped support alone can be manufactured and then cut at an appropriate location to produce an inverted T-shaped support. For example, the downward-opening U-shaped support shown in FIGS. 1 and 2 can be manufactured and then cut at the middle of the upper piece 4 as needed at the construction site, etc., to obtain the inverted T-shaped support shown in FIG. 5(a). Alternatively, the upward-opening U-shaped support shown in FIGS. 3 and 4 can be manufactured and then cut at the middle of the second support piece 3B as needed at the construction site, etc., to obtain the inverted T-shaped support shown in FIG. 5(b). To facilitate the cutting of the upper piece 4 of the downward-opening U-shaped support or the second support piece 3B of the upward-opening U-shaped support at such a construction site, the upper piece 4 of the downward-opening U-shaped support or the second support piece 3B of the upward-opening U-shaped support may have a linear thin portion in its middle. In this case, the work of cutting the upper piece 4 of the downward-opening U-shaped support or the second support piece 3B of the upward-opening U-shaped support can be easily done by the worker repeatedly bending the linear thin-walled portion by hand several times.

[0021] The support of the present invention will be described in more detail below, taking as an example a downward-opening or upward-opening U-shaped support. The support 1 of the present invention has at least side pieces 2 and support pieces 3, and is formed so as to be able to be engaged with the specific pillar-like object. The term "engagement" as used herein means that when the support 1 is installed on a specific pillar, such as a small floor joist, the support 1 remains on the pillar, and when the first and second insulating materials are supported by support pieces 3A and 3B, the support 1 does not fall off the pillar. However, when the support 1 is installed on a specific pillar, it does not only mean a state in which the support 1 is simply caught on the pillar and remains there, but also a state in which the support 1 is fitted into and fixed to the pillar, or a state in which the support 1 is firmly fixed to the pillar.

[0022] The support 1 of the present invention is preferably one that is firmly fixed to the specific pillar-like object. To firmly fix the support 1 to the pillar-like object, the side pieces 2 may be attached to the pillar-like object using nails, adhesive, etc. Furthermore, the support 1 may further include an upper piece 4, as shown in Figures 1 and 2 or 3 and 4.

[0023] 1 and 2, the support 1 according to the present invention is provided with an upper piece 4 connecting two side pieces 2, 2 as described above, and the upper piece 4 and the two side pieces 2, 2 form a U-shaped portion with an opening downward, and the upper piece 4 is placed on the top surface of the specific columnar object, so that the support 1 is suspended from the specific columnar object. By making the support 1 downward-opening and U-shaped, and having such an upper piece 4, the bottom of the support 1 is opened on both sides, as shown in Fig. 6, and the support 1 is attached from above to a specific columnar object 20 with a second insulating material 40 aligned (temporarily fastened) directly below it. As shown in Figs. 7(a) and 8, the support 1 can be attached in a stable, suspended state to the specific columnar object 20 with the second insulating material 40 supported from both sides by the second support pieces 3B of the support 1.

[0024] As shown in Figures 1 and 2, the upper piece 4 is preferably formed with claws 5 that bite into the upper surface of a specific columnar object. By using a support 1 that includes an upper piece 4 with such claws 5, when engaging the support 1 with a columnar object 20, the claws 5 on the upper piece 4 are driven into the upper surface of the columnar object 20 while holding the second insulating material 40, thereby making it possible to firmly and stably fix (engage) the support 1 to the columnar object 20. The claws 5 formed on the upper piece 4 may be simple triangular cut-and-raised pieces as shown in Figures 1 and 2, but may also be two parallel cut-and-raised strips with sharp portions facing in opposite directions as shown in Figure 12(a). 1 and 2, the claws 5 (for example, cut and raised strips) may also be provided on the side pieces 2. In this case, the support 1 can be more firmly fixed (engaged) to a specific pillar-like object, and even if the claws 5 are not provided on the upper piece 4, the support can be easily and stably engaged to the specific pillar-like object.

[0025] As shown in Figure 8, the length of the upper piece 4 is preferably designed to be approximately the same as the width W of the specific columnar object 20 to which the support 1 is attached and the width w of the second insulating material 40 placed directly below the columnar object. The difference between the width and length is preferably within ±5 mm, more preferably within ±3 mm, and particularly preferably within ±1 mm. By designing the length of the upper piece 4 in this manner, the specific columnar object 20 and the second insulating material 40 are sandwiched between the side pieces 2, 2, and the second support piece 3B supports the second insulating material 40 from below without any rattle, thereby enabling more reliable retention of the second insulating material. The specific length of the upper piece 4 is preferably 30 to 80 mm, more preferably 34 to 60 mm, and particularly preferably 38 to 56 mm.

[0026] As described above, the support device 1 according to the present invention has support pieces 3A and 3B extending from the side piece 2. The support pieces 3A and 3B are formed in both directions (e.g., in opposite directions) from the side piece 2. The support pieces 3A and 3B may be provided at the same height midway along the side piece 2 or at different height positions. However, it is preferable that both support pieces extend from the lower end of the side piece 2, as in the support device 1 shown in Figures 1 and 2. The first support piece 3A extending from the lower end of the side piece 2 is formed so as to extend toward the arrangement space for the first insulating material to be placed between the pillars. By placing the first insulating material 30 on top of this, it is possible to support a portion of the width direction of the bottom surface of the first insulating material. The second support pieces 3B extending from the lower ends of the side pieces 2 are formed so as to extend toward the placement space of the second insulating material placed directly below a specific columnar object, and by placing the second insulating material 40 on top of these, a portion of the width direction of the bottom surface of the second insulating material can be supported from both ends (see Figures 7(a) and 8).

[0027] The protruding length of each of the first support pieces 3A extending from the lower end of the side piece 2 toward the space where the first insulating material is placed, i.e., the first support pieces 3A, 3A protruding on both sides at the lower end of the support device 1, is preferably 10 to 30 mm, more preferably 13 to 25 mm, and particularly preferably 15 to 23 mm, from the standpoint of ensuring reliable retention of the first insulating material 30, ease of handling as a support device, and economic efficiency in production. Furthermore, the protruding length of the second support piece 3B extending from the lower end of the side piece 2 toward the space where the second insulating material is placed, i.e., the second support pieces 3B, 3B each protruding inward at the lower end of the support device 1, is preferably less than half the length of the upper piece 4 and formed to be 10 to 30 mm, from the viewpoint of maintaining a highly reliable second insulating material 40, as well as from the viewpoint of ease of handling as a support device, economic efficiency in production, ease of attaching the support device to a columnar object, and preventing the second support pieces from butting against or overlapping with each other when attached to a specific columnar object, more preferably less than half the length of the upper piece 4 and formed to be 13 to 25 mm, and particularly preferably less than half the length of the upper piece 4 and formed to be 15 to 23 mm.

[0028] 1 and 2, it is preferable that claws 5 be formed on the plate surface of the first support piece 3A, from the viewpoint of achieving highly reliable retention of the first insulating material 30. The claws 5 may be cylindrical claws formed by burring as shown in the figures, or may be simple triangular cut-and-raised pieces as shown in Figure 12(d). The claws 5 formed on the plate surface of the first support piece 3A are formed so that they can dig into the bottom surface of the first insulating material 30, thereby preventing the first insulating material from shifting position.

[0029] Furthermore, as shown in FIG. 12( a), it is preferable that the support piece 3 has a reinforcing portion 6 formed by bead processing, the reinforcing portion 6 being formed across the first support piece 3A and the second support piece 3B. When the reinforcing portion 6 is formed on the support piece 3 in this manner, even if the insulation is pressed in too hard or heavy building materials are placed on the insulation during installation, the reinforcing portion 6 can suppress deformation of the support piece 3. As a result, the insulation board is prevented from being positioned lower than the intended position, making it easier to hold the insulation in the intended position. The reinforcing portion 6 of such a support piece may be formed by bending both sides of the support piece 3 downward, as shown in FIG. 12( d). However, from the perspective of reducing product waste, it is preferable to form the reinforcing portion 6 by bead processing. Furthermore, by providing the reinforcing portion 6, the support piece 3 can support the insulation material even if it is thin, and therefore, by manufacturing the support using a thin material, it is possible to save on material costs.Furthermore, if the support is thin, the proportion of the volume that the support takes up in the insulation structure will be smaller, so the area that becomes a thermal bridge will be smaller, and it will be possible to construct an underfloor insulation structure with better insulation properties.

[0030] As shown in Figures 7(a) and 8, the height of the side piece 2 of the downward-opening U-shaped support 1 configured as described above is preferably formed to a height that approximately matches the sum of the height H of the specific columnar object 20 and the height h of the second insulating material 40 located directly below the specific columnar object. Specifically, the difference between these heights is preferably within ±8 mm, more preferably within ±5 mm, even more preferably within ±3 mm, and particularly preferably within ±1 mm. Furthermore, the height of the side piece 2 of the support 1 is preferably formed to a height that approximately matches the thickness T of the first insulating material 30. Specifically, the difference between the thickness and the height of the side piece 2 is preferably within ±8 mm, more preferably within ±5 mm, even more preferably within ±3 mm, and particularly preferably within ±1 mm. By designing the height of the side piece 2 in this manner, the second support piece 3B extending from the lower end of the side piece 2 can hold the second insulating material 40 in close contact with the lower surface of the specific columnar object 20, and the first support piece 3A extending from the lower end of the side piece 2 can hold the upper surface of the first insulating material 30 flush with the upper surface of the specific columnar object 20 (see Figure 7(a)). From the perspective of further improving the thermal insulation of the entire floor structure, the specific height of the side piece 2 is preferably 50 to 160 mm, more preferably 60 to 140 mm, and particularly preferably 70 to 120 mm.

[0031] The downward-opening U-shaped support 1 according to the present invention, which is equipped with the above-described upper piece 4, may have an obtuse angle α greater than 90 degrees between the upper piece 4 and the side piece 2, as shown in Fig. 13(a). Such a support 1, in which the lower portions of the side pieces 2 are open on both sides, can be easily attached to a columnar object 20, and multiple supports 1 can be stacked and packed during transportation, etc. From this perspective, the angle α shown in Fig. 13(a) is preferably 92 to 115 degrees, and more preferably 95 to 110 degrees. Furthermore, the fact that each of the support pieces 3A, 3B extends from the side piece 2 toward the space where the heat insulating material is disposed means that the support pieces 3A, 3B are formed approximately perpendicularly in opposite directions to the plate surface of the side wall piece 2, and the angles β and γ shown in Figure 2(a) are preferably formed at 80 to 100 degrees, more preferably at 85 to 95 degrees, and particularly preferably at 88 to 92 degrees. Here, the sum of angles β and γ is 180 degrees.

[0032] The support device 1 according to the present invention shown in Figures 3 and 4 has the second support piece 3B formed so as to be able to support the entire width of the bottom surface of the second insulating material, the second support piece 3B and the two side pieces 2, 2 forming a U-shaped portion with an opening at the top, and further has a bendable upper piece 4 extending from the upper end of the side piece 2. The upper piece 4 is a portion that can be bent to engage with the upper surface of the specific columnar object, and is preferably formed so as to be firmly fixed (engaged) with the specific columnar object. Specifically, as shown in Figures 3 and 4, the upper piece 4 preferably has claws 5 formed thereon that can be inserted into the upper surface of the specific columnar object. By making the support 1 an upward-opening U-shaped support with such an upper piece 4, as shown in Figure 9, the top of the support 1 can be opened on both sides, and the support 1 can be attached to a specific columnar object 20 from below with the second insulating material 40 aligned (temporarily fixed) directly below it, and the upper piece 4 can be bent toward the top surface of the specific columnar object 20 and the claws 5 can be driven into the top surface of the columnar object 20, so that the second insulating material 40 is firmly fixed (engaged) to the specific columnar object 20 with the entire width supported by the second support piece 3B provided on the support 1, as shown in Figures 10(a) and 11.

[0033] As shown in FIG. 11 , the length of the second support piece 3B connecting the two side pieces 2, 2 is preferably designed to be approximately the same as the width W of the specific columnar object 20 to which the support 1 is to be attached and the width w of the second insulating material 40 placed directly below the columnar object. The difference between the width and length is preferably within ±5 mm, more preferably within ±3 mm, and particularly preferably within ±1 mm. By designing the length of the second support piece 3B in this manner, the specific columnar object 20 and the second insulating material 40 are sandwiched between the side pieces 2, 2, and the second support piece 3B is attached to the specific columnar object 20. The second support piece 3B supports the second insulating material 40 from its lower surface across its entire width, enabling more reliable retention of the second insulating material. Specifically, the length of the second support piece 3B is preferably 30 to 80 mm, more preferably 34 to 60 mm, and particularly preferably 38 to 56 mm. Furthermore, the protruding length of the first support piece 3A extending from the lower end of the side piece 2 toward the space where the first insulating material is placed, i.e., the first support pieces 3A, 3A protruding on both sides at the lower end of the support device 1, is preferably formed to be 10 to 30 mm, more preferably 13 to 25 mm, and particularly preferably 15 to 23 mm, from the viewpoint of ensuring reliable retention of the first insulating material 30, as well as from the viewpoint of ease of handling as a support device and economic efficiency in production.

[0034] The upper pieces 4 are preferably provided at an inward angle from the upper ends of the side pieces 2 (i.e., toward the side where the specific columnar object and the second insulating material are disposed), with the angle δ shown in FIG. 4(a) preferably being 20 to 40 degrees, more preferably 25 to 35 degrees. By providing the upper pieces 4 at an inward angle from the upper ends of the side pieces 2, the workability is improved when, for example, striking the upper pieces 4 from above with a hammer or the like to drive the claws 5 into the upper surfaces of the columnar objects 20, such as small joists, to firmly secure (engage) the upper pieces 4. The length of the upper pieces 4 is preferably 15 to 30 mm, more preferably 17 to 25 mm. The claws 5 formed on the upper pieces 4 may be two parallel cut-and-raised strips with sharpened portions facing in opposite directions, as shown in FIGS. 3 and 4 , or may be simple triangular cut-and-raised strips, as shown in FIG. 12(b) and elsewhere. 12(c), the claws 5 (for example, cut and raised strips) may also be provided on the side pieces 2. In this case, even if the support 1 does not have the upper piece, it can be easily engaged with the specific pillar-like object.

[0035] The upward-opening U-shaped support device 1 of the present invention has support pieces 3A and 3B extending from the side pieces 2 as described above. As shown in FIGS. 3 and 4, the support pieces 3A and 3B preferably extend from the lower ends of the side pieces 2, but they may also be located at the same height or at different heights along the side pieces 2. The first support piece 3A extending from the side pieces 2 is formed to extend toward the space where the first insulating material is to be placed between the pillars. By placing the first insulating material 30 on this, it is possible to support a portion of the width of the bottom surface of the first insulating material. The second support piece 3B extending from the side pieces 2 is formed to extend toward the space where the second insulating material is to be placed directly below a specific pillar. By placing the second insulating material 40 on this, it is possible to support the entire width of the bottom surface of the second insulating material (see FIGS. 10(a) and 11).

[0036] 3 and 4, it is preferable that claws 5 be formed on the plate surface of the first support piece 3A, from the viewpoint of achieving highly reliable retention of the first insulating material 30. The claws 5 may be cylindrical claws formed by burring as shown in the figures, or may be simple triangular cut-and-raised pieces as shown in Figure 12(d). The claws 5 formed on the plate surface of the first support piece 3A are formed so as to be able to bite into the bottom surface of the first insulating material 30, thereby preventing the first insulating material from shifting position.

[0037] 3 and 4, it is preferable that a reinforcing portion 6 is formed on the support piece 3 by bead processing, and that the reinforcing portion 6 is formed across the first support piece 3A and the second support piece 3B. When the reinforcing portion 6 is formed on the support piece 3 in this manner, deformation of the support piece 3 can be suppressed, and as a result, the heat insulating board is prevented from being positioned lower than the intended position. The reinforcing portion 6 of the support piece may be formed by bending both side portions of the support piece 3 downward, as shown in FIG. 12(d). However, from the viewpoint of reducing product loss, it is preferable that the reinforcing portion 6 be formed by bead processing.

[0038] As shown in Figures 10(a) and 11, the height of the side piece 2 of the upward-opening U-shaped support 1 configured as described above is preferably formed to a height that approximately matches the sum of the height H of the specific columnar object 20 and the height h of the second insulating material 40 located directly below the specific columnar object. Specifically, the difference between these heights is preferably within ±8 mm, more preferably within ±5 mm, even more preferably within ±3 mm, and particularly preferably within ±1 mm. Furthermore, the height of the side piece 2 of the support 1 is preferably formed to a height that approximately matches the thickness T of the first insulating material 30. Specifically, the difference between the thickness and the height of the side piece 2 is preferably within ±8 mm, more preferably within ±5 mm, even more preferably within ±3 mm, and particularly preferably within ±1 mm. By designing the height of the side piece 2 in this manner, the second support piece 3B extending from the lower end of the side piece 2 can hold the second insulating material 40 in close contact with the lower surface of the specific columnar object 20, and the first support piece 3A extending from the lower end of the side piece 2 can hold the upper surface of the first insulating material 30 flush with the upper surface of the specific columnar object 20 (see Figure 10(a)). From the perspective of further improving the thermal insulation of the entire floor structure, the specific height of the side piece 2 is preferably 50 to 160 mm, more preferably 60 to 140 mm, and particularly preferably 70 to 120 mm.

[0039] In the above-described upward-opening U-shaped support device 1 according to the present invention, the angle ε between the side piece 2 and the support piece 3 (particularly the second support piece 3B) may be an obtuse angle exceeding 90 degrees, as shown in Fig. 13(b). Such a support device 1, in which the tops of the side pieces 2 are open on both sides, can be easily attached to a columnar object 20, and multiple supports 1 can be stacked and packed during transportation, etc. From this perspective, the angle ε shown in Fig. 13(b) is preferably 91 to 110 degrees, and more preferably 92 to 105 degrees. Furthermore, the fact that each of the support pieces 3A, 3B extends from the side piece 2 toward the space where the heat insulating material is disposed means that the support pieces 3A, 3B are formed approximately perpendicularly in opposite directions to the plate surface of the side wall piece 2, and the angles β and γ shown in Figure 4(a) are preferably formed at 80 to 100 degrees, more preferably at 85 to 95 degrees, and particularly preferably at 88 to 92 degrees. Here, the sum of angles β and γ is 180 degrees.

[0040] The various configurations of the support 1 according to the present invention described above are preferably formed by punching and bending a metal plate. This method allows for efficient production of the support 1 without waste of material. The metal plate used may be a Galvalume steel plate (registered trademark), a zinc-plated steel plate, an aluminum plate, or a stainless steel plate, with zinc-plated steel plate being preferred from the viewpoints of strength and economy. The thickness of the metal plate forming the support 1 is preferably 0.1 to 1.5 mm, more preferably 0.2 to 1.2 mm, and even more preferably 0.3 to 1.0 mm, so that it can be manually bent, has the strength to support the first and second insulating materials, and is cost-effective. When the thickness of the support 3 is within this range, the insulation support occupies a small proportion of the volume of the underfloor insulation structure, further reducing the risk of thermal bridges causing a loss of insulation performance and resulting in a superior underfloor insulation structure. The width is determined taking into consideration the number of pieces to be attached to specific pillar-like objects such as joists to support the insulating material, the weight of the insulating material to be supported, etc., and is, for example, 10 to 20 mm.

[0041] Next, preferred examples of the manufacturing method of the supports having the various configurations described above according to the present invention will be specifically described. First, a metal strip having the shape shown in the development of Fig. 14(a) or Fig. 14(b) is produced from a metal plate by punching using a press. Note that the development of Fig. 14(a) is a development of the metal strip when manufacturing the support 1 shown in Fig. 1 and Fig. 2, and the development of Fig. 14(b) is a development of the metal strip when manufacturing the support 1 shown in Fig. 3 and Fig. 4, and the same reference numerals are used to designate the same parts and components. The strip-shaped metal piece is subjected to bead processing for forming reinforcing portions, burring processing for forming claws, notching processing, etc. during punching processing by a press machine or by subsequent processing. Next, the obtained strip of metal is bent at desired positions using a metal bending die or the like to form the parts that will become the side pieces 2, support pieces 3, and upper piece 4. However, it is also possible to form linear thin-walled parts on the strip of metal to make bending easier, and then bend the strip on-site to form these parts 2, 3, and 4. Subsequently, each of the claws 5 is raised, and the support 1 according to the present invention shown in FIGS. 1 and 2 or FIGS. 3 and 4 is manufactured. The process of manufacturing the support 1 from the strip-shaped metal piece is preferably carried out in advance in a factory or the like, but can also be carried out at the construction site.

[0042] Although it is most preferable to form the support 1 of the present invention by punching and bending a metal plate as described above in terms of productivity, rigidity, and the ability to reduce thickness, the support 1 of the present invention may be formed from other materials besides metal plate, such as synthetic resin. Furthermore, the support 1 of the present invention can also be manufactured by metal casting, welding, or the like, or by injection molding of synthetic resin, thermoforming of synthetic resin sheet, or the like.

[0043] The first and second insulating materials 30, 40 used with the above-described support 1 of the present invention may be plate-shaped or columnar insulating materials made of closed-cell synthetic resin foam, or so-called vacuum insulating materials made by vacuum-packing open-cell synthetic resin foam, glass fiber, or synthetic fiber into a plate or columnar shape. Note that the plate or columnar shape referred to here may have rounded corners or an uneven surface, etc. It is also preferable that the first insulating material 30 is a single-layer plate-shaped insulating material. By using the support 1 according to the present invention, there is no need to construct two layers, and the first insulating material 30 can be constructed in a single layer, thereby more reliably ensuring thermal insulation.

[0044] Among the above-mentioned heat insulating materials, plate-shaped or columnar heat insulating materials made of synthetic resin foam are preferred because they are lightweight, highly rigid, have high heat insulating performance, and can be easily modified in shape by processing, and among these, extruded foams or foamed bead moldings having a closed-cell structure made of resins such as polystyrene resins, polypropylene resins, polyethylene resins, and phenolic resins are preferred. A typical example is extruded polystyrene resin foam (XPS). If the insulation material is a plate-shaped or column-shaped foam made of foamed resin, the compressive strength in the thickness direction is 5N / cm 2 Preferably, it is 10 to 40 N / cm or more. 2 More preferably, it is 15 to 35 N / cm 2 It is particularly preferable that the compressive strength of the heat insulating material is measured in accordance with JIS A9521:2017.

[0045] An example of a method for constructing the underfloor heat insulation structure shown in FIG. 7(a) or FIG. 10(a) using the support 1 according to the present invention will now be described. First, the conventional support 100 is fastened to the joist 10 . Next, a second insulating material 40 is placed directly below the small joist 20, the support device 1 of the present invention is engaged with the small joist 20, and the second support piece 3B of the support device 1 supports the second insulating material 40 directly below the small joist 20. Next, the first insulating material 30 is fitted between the joists 10 and the small joists 20, and the first insulating material 30 is supported from the underside by the support piece of the conventional support 100 and the first support piece 3A of the support 1 of the present invention.

[0046] In the above-described construction example, the step of supporting the second insulating material 40 directly below the small floor joist 20 using the support 1 according to the present invention, more specifically, the step of placing the second insulating material 40 directly below the small floor joist 20, engaging the support 1 according to the present invention to the small floor joist 20, and supporting the second insulating material 40 directly below the small floor joist 20 using the second support piece 3B of the support 1, is performed on the small floor joist 20 before being placed between the joists 10, 10, and then the small floor joist 20 in a state in which the second insulating material 40 is supported by the support 1 according to the present invention is placed between the joists 10, 10. Alternatively, this step may be carried out by temporarily fixing the second insulating material 40 to the underside of the small joist 20 placed between the joists 10, 10, and then supporting the temporarily fixed second insulating material 40 on the small joist 20 with the support device 1 of the present invention; further, this step may be carried out by first temporarily fixing the second insulating material 40 between the joists 10, 10, and then positioning and fixing the small joist 20 so that the second insulating material is placed directly below it, and then supporting the second insulating material 40 on the small joist 20 with the support device 1 of the present invention. Furthermore, in the above-mentioned construction example, the process of engaging the conventional support 100 to the joists 10 may be performed after the process of engaging the support 1 of the present invention to the small floor joist 20 and supporting the second insulation material 40, or the process may be performed by engaging another support, for example the support 1 of the present invention, to the joists 10 without using the conventional support 100.

[0047] Various embodiments of the insulation support of the present invention have been described above, but the present invention is not limited to the embodiments already described, and it is natural that various modifications and changes are possible within the scope of the insulation support of the present invention as the technical concept described in the claims. [Industrial Applicability]

[0048] The insulation support device of the present invention makes it possible to easily construct an underfloor insulation structure with no insulation defects directly below specific columnar objects, such as small joists placed between joists, and therefore can be widely used in the construction of underfloor insulation structures in wooden buildings. [Explanation of symbols]

[0049] 1. Insulation support 2 side pieces 3 Support piece 3A First support piece 3B Second support piece 4 Upper piece 5 Claws 6 Reinforcement 10. Main Entry 20 Small floor joists 30 First Insulation 40 Secondary Insulation 100 Conventional insulation support H Height of a specific column (small joist) W: Width of a specific column (small joist) h Height of the second insulation w Width of the second insulation T is the thickness of the first insulation

Claims

1. An insulation support device that receives and supports both a first insulation material arranged between pillars and a second insulation material arranged directly below a specific pillar from the underside, The heat insulating material support has side pieces and support pieces, and is formed so as to be able to be engaged with the specific pillar-like object, The support piece has a first support piece extending from the side piece toward the arrangement space of the first insulating material, and a second support piece extending from the side piece toward the arrangement space of the second insulating material. Insulation support.

2. 2. The heat insulating material support according to claim 1, further comprising an upper piece extending from said side piece, said upper piece being fastened to an upper surface of said particular columnar object.

3. An insulation support as described in claim 1 or 2, characterized in that it has two side pieces and an upper piece connecting the side pieces, and the upper piece and the two side pieces form a U-shaped portion with an opening downward.

4. An insulation support device as described in claim 1 or 2, characterized in that the second support piece is formed so as to be able to support the entire width of the bottom surface of the second insulation material, and the second support piece and the two side pieces form a U-shaped portion having an opening at the top.

5. An insulation support as described in claim 1 or 2, characterized in that the height of the side piece is formed to be approximately the same as the total height of the specific columnar object and the height of the second insulation material arranged directly below the specific columnar object.

6. An insulation support as described in claim 1 or 2, characterized in that the first insulation material is a single layer of plate-shaped insulation material, and the height of the side piece is formed to be approximately the same as the thickness of the plate-shaped first insulation material.

7. 3. The heat insulating material support according to claim 1, wherein the side pieces are formed with claws for engaging the heat insulating material support with the specific columnar object.

8. 3. The heat insulating material support according to claim 2, wherein said upper piece is formed with a claw for engaging said heat insulating material support with said specific columnar object.

9. 3. The heat insulating material support according to claim 1, wherein the first support piece is formed with a claw that bites into the first heat insulating material.

10. An insulation support as described in claim 1 or 2, characterized in that a reinforcing portion is formed on the support piece by bead processing, and the reinforcing portion is formed across the first support piece and the second support piece.

11. 3. The heat insulating material support according to claim 1, wherein the heat insulating material support is formed by bending a single strip of metal.

12. 3. The heat insulating material support according to claim 1, wherein the first heat insulating material and the second heat insulating material are both plate-shaped or columnar foam bodies made of foamed resin.

13. A construction method for an underfloor insulation structure in which a first insulation material arranged between pillars and a second insulation material arranged directly below a specific pillar are both supported from the underside using the insulation material support device according to claim 1 or 2, a step of placing the second insulating material directly below the specific columnar object, engaging the insulating material support tool with the specific columnar object, and supporting the second insulating material directly below the specific columnar object with the second support piece; and supporting the first insulating material by a first support piece of the insulating material support. How to install underfloor insulation.

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