Pillar insulation

Abstract

To mainly prevent deterioration of insulation performance due to gaps caused by deformation of the insulation material body.SOLUTION: The present invention relates to a column insulation material 3 that insulates a metal stud having a C-shaped cross section. The column insulation material 3 includes: an insulation material body 21 made of an organic material and extending in the vertical direction Z along the stud, having a first portion 21a with a width that can be inserted and placed inside the stud from the opening of the stud opening to an indoor side 14; an opening locking portion 23 formed on a second portion 21b protruding from the stud of the insulation material body 21 toward the indoor side 14 so as to protrude to both sides of the opening of the stud, and can be locked to the stud in an insertion direction 22; and a backing portion 24 that is formed in the first portion 21a in the stud of the insulation material body 21 and abuts against the back surface of the stud. The insulation material body 21 has a caulking fixing portion 25 on a side surface 21c in which the width of a portion of the first portion 21a is partially wider than the width of the opening of the stud.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a pillar insulation material. [Background technology]

[0002] In buildings such as houses, heat insulating materials are installed inside the walls to provide thermal insulation (see, for example, Patent Document 1). Heat insulating materials are also attached to the inside of pillars installed inside the walls. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-196122 Summary of the Invention [Problem to be solved by the invention]

[0004] When insulating material such as glass wool, which does not retain its shape and is easily deformed and does not settle into a fixed shape, is installed inside a pillar, there is a problem that the insulating performance decreases if the insulating material deforms and a gap is created between the insulating material and the pillar.

[0005] Therefore, a main object of the present invention is to contribute to improving the above-mentioned problems. [Means for solving the problem]

[0006] In response to the above problems, the present invention provides: A pillar insulation material that insulates metal studs with a C-shaped cross section, a heat insulating material body formed of an organic material, having a first portion with a width dimension that can be inserted into the interior of the stud through an opening of the stud that opens to the indoor side, and extending in the vertical direction along the stud; an opening locking portion formed on a second portion of the thermal insulation body that protrudes from the stud toward the indoor side so as to protrude on both sides of the opening of the stud and that can be locked to the stud in an insertion direction; a backing portion formed in the first portion of the thermal insulation body within the stud and abutting against a rear surface of the stud; The heat insulating material body is characterized by having a crimp fixing portion on the side surface, in which the width dimension of part of the first portion is partially wider than the width dimension of the opening of the partition wall. [Effects of the Invention]

[0007] According to the present invention, the above-mentioned configuration makes it possible to prevent a decrease in the heat insulating performance caused by gaps due to deformation of the heat insulating material body. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is an overall perspective view of a building (building unit) that uses a pillar insulating material according to this embodiment. [Figure 2] This is an oblique view of the outdoor side of the building unit, viewed from the indoor side, showing how the interior wall is attached to the studs on which the pillar insulation material is installed. [Figure 3] 10 is a perspective view showing the state in which the lower pillar insulation material is being attached to the lower portion of the stud. FIG. [Figure 4] This is a part diagram (side view) of the pillar insulation material when laid horizontally. [Figure 5] 5(a) is a vertical cross-sectional view of the position of the caulking fixing portion in the pillar insulating material of Fig. 4. FIG. 5(b) is a vertical cross-sectional view of the position of the wide fixing portion in the pillar insulating material of Fig. 4. [Figure 6] An enlarged oblique view showing the crimped fixing portion around the upper end of the pillar insulation material. [Figure 7] FIG. 1 is a schematic overall perspective view of a stud. [Figure 8] This is an enlarged partial front view of the upper end of the partition wall as seen from the inside of the room. [Figure 9] Parts diagrams of a stud. (a) is an overall front view, (b) is an overall side view, (c) is a partially enlarged side view of the upper end, and (d) is a partially enlarged side view of the lower end. [Figure 10]1A is a cross-sectional view showing the state in which the pillar insulation material is attached to the stud, and FIG. 1B is a cross-sectional view showing the position of the caulking fixing part. [Figure 11] FIG. 10 is a cross-sectional view showing a comparative example in which glass wool is attached to the studs as a heat insulating material. [Figure 12] 1A and 1B are component diagrams of a heat insulating material made of an organic material according to another comparative example, in which (a) is an overall front view, (b) is an overall side view, (c) is an end view of (a), and (d) is an end view of (b). [Figure 13] FIG. 13 is a diagram showing the state in which the heat insulating material of another comparative example in FIG. 12 is attached to a stud. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, this embodiment will be described in detail with reference to the drawings. 1 to 13 are used to explain this embodiment. [Example]

[0010] <Configuration> The configuration of this embodiment will now be described.

[0011] Fig. 1 is a perspective view showing a stud 2 attached to a building 1, and Fig. 2 is a partially enlarged perspective view of the stud 2 seen from a different angle. In this embodiment, the stud 2 is insulated by a pillar insulation material 3, as shown in Fig. 3.

[0012] The pillar insulation material 3 of this embodiment is as shown in Figures 3 (to 6). The pillar insulation material 3 is a material that is installed in a hollow metal pillar member to insulate the pillar member. In this embodiment, the pillar insulation material 3 insulates a stud 2 that serves as a pillar member.

[0013] The studs 2 are as shown in Figures 3 and 7 (to 9). The studs 2 are long vertical members that extend in the vertical direction Z and are installed between the floor beams 4 and ceiling beams 5 of the building 1, connecting the floor beams 4 and the ceiling beams 5. In this embodiment, pillar insulation materials 3 are attached to the studs 2 as shown in Figures 3 and 10.

[0014] The building 1 may have any structure, but may also be, for example, a modular building. A modular building is a building 1 that can be constructed in a short period of time by transporting rectangular parallelepiped building units 8 manufactured in advance in a factory to a construction site and assembling them there.

[0015] As shown in Figure 1, a rectangular parallelepiped building unit 8 used in a modular building has a unit frame with a box-frame rigid frame structure that serves as the skeleton inside. The unit frame is made up of four columns 6, four floor beams 4, and four ceiling beams 5. The four floor beams 4 connect the top ends of the four columns 6 in a rectangular shape. The four ceiling beams 5 connect the top ends of the four columns 6 in a rectangular shape. Floor joists 4a are installed inside the rectangular floor frame made up of the four floor beams 4, and floor boards 4b are attached to the top surfaces of the floor joists 4a so as to cover the floor frame. Ceiling beams 5a are installed inside the rectangular ceiling frame made up of the four ceiling beams 5, and ceiling boards 5b are attached to the undersides of the ceiling beams 5a so as to cover the ceiling frame.

[0016] A plurality of studs 2 are attached at least at intervals to the surface that will become the outdoor side 11 of the building unit 8. Some studs 2 are installed between a pair of pillars 6 and away from the pillars 6, while others (corner studs 2a) are installed so as to be almost in contact with the side of the pillar 6, as shown in Figure 2. The outdoor side is the part outside the outer periphery of the building 1. In the case of a building unit 8, the outdoor side 11 is the outside of the side that does not have an adjacent building unit 8, and the indoor side 14 is the inside of the building unit 8.

[0017] The studs 2 are primarily used to attach exterior walls 7 to the building 1. The exterior walls 7 are, for example, exterior wall panels. In this embodiment, the exterior walls 7 are installed along the side surfaces of the building units 8 in the long-side direction X. The exterior walls 7 may also be installed along the side surfaces of the building units 8 in the short-side direction Y. The exterior walls 7 are then fixed to the studs 2 from the inside of the studs 2 with rivets (not shown). After the stud insulation material 3 is installed on the studs 2, the interior walls 9 are attached to the interior side 14 of the room. The interior walls 9 are, for example, interior wall panels. The studs 2 are hidden from view by the interior walls 9.

[0018] As shown in Figure 3, the studs 2 are members with an approximately C-shaped cross section, and are installed with the C-shaped openings 13 facing the indoor side 14. The rivets that attach the exterior wall 7 are inserted into the inside of the studs 2 through the C-shaped openings 13 of the studs 2, and fix the exterior wall 7 to the studs 2 approximately perpendicularly, facing in the direction from the indoor side 14 toward the outdoor side 11 (the direction Y of the short side of the building unit 8).

[0019] The stud 2 has a substantially uniform C-shaped cross section throughout its entire length (vertical direction Z). The longitudinal direction is the extension direction of the stud 2, and is oriented in the vertical direction Z when attached to the building unit 8. The vertical direction Z is a direction facing almost directly upward and almost directly downward. The C-shaped cross section has a web portion 16, a flange portion 17, and a lip portion 18, and is a substantially rectangular cross section with one side open.

[0020] In the stud 2, the web portion 16 forms a surface on the outdoor side 11 that is parallel to the exterior wall 7. The flange portions 17 form a pair of surfaces that extend almost perpendicularly from both side edges of the web portion 16 located on the outdoor side 11 toward the indoor side 14. The pair of flange portions 17 are parallel to each other and have almost the same width. The lip portions 18 extend slightly from the edges of the flange portions 17 on the indoor side 14 in directions that bring them closer to each other, and face each other with a gap between them, thereby forming an opening 13 between them.

[0021] The pair of lip portions 18 are positioned in the same plane parallel to the web portion 16 and are formed with approximately the same width. The surface on which the opening 13 is formed by the pair of lip portions 18 is the interior side 14 surface of the stud 2, and serves as the opening surface of the stud 2. The opening surface is formed with approximately the same width as the web portion 16.

[0022] Furthermore, at the ends of the studs 2, end surfaces 19 (Fig. 8) such as a nearly horizontal bottom surface or top plate are provided integrally or separately as needed for attachment to floor beams 4 or ceiling beams 5.

[0023] Furthermore, this embodiment can have the following configuration.

[0024] (1) As shown in Figures 5 and 6 (Figure 10), the pillar insulation material 3 is a heat insulating material body (21) formed of an organic material, having a first portion (21a) with a width dimension (W1) that can be inserted into the interior of the stud (2) through an opening (13) of the stud (2) that opens to the indoor side (14), and extending in the vertical direction (Z) along the stud (2); The second portion 21b of the heat insulating material body 21 protrudes from the stud 2 toward the indoor side 14. The second portion 21b is formed to protrude on both sides of the opening 13 of the stud 2 and can be engaged with the stud 2 in the insertion direction 22. The heat insulating material body 21 may also have a backing portion 24 formed in the first portion 21 a within the stud 2 and abutted against the inner surface of the stud 2 . The heat insulating material body 21 may have a crimp fixing portion 25 on the side surface 21c, in which the width dimension W2 of part of the first portion 21a is partially wider than the width dimension W3 (Figure 3) of the opening 13 of the stud 2.

[0025] Here, the organic material is, for example, polystyrene, polyurethane, or other organic material. The organic material is used by foaming with a foaming agent to form a foam having internal thermal insulating bubbles, such as polystyrene foam or urethane foam. The bubbles are preferably closed bubbles that are independent of each other.

[0026] Insulation materials made from organic materials (organic insulation materials) have high thermal insulation properties, are lightweight, have a soft surface, and are able to maintain a stable, fixed shape, making them easy to handle and use. Organic insulation materials deform less than, for example, insulation materials 26 (Fig. 11) made from inorganic materials such as glass wool, which do not maintain their shape and are easily deformed, as shown in the comparative example. However, because of their softness and elasticity, their surfaces can undergo slight elastic deformation while maintaining a fixed shape.

[0027] The openings 13 are formed continuously at substantially uniform intervals on the indoor side 14 surface (opening surface) of the C-section stud 2, essentially over almost the entire longitudinal length of the stud 2. If necessary, a mounting member 27 such as a wooden brick is installed in the opening 13 of the stud 2, as shown in FIG. 2 . The mounting member 27 is used, for example, to mount an interior wall 9. A portion of the mounting member 27 protrudes toward the indoor side 14 beyond the opening 13 (protruding portion). The interior wall 9 is fixed to the front of the protruding portion of the mounting member 27, and is mounted spaced apart in the short side direction Y of the building unit 8 so as not to come into direct contact with the stud 2. A space for insulation is then formed between the exterior wall 7 and the interior wall 9.

[0028] In this embodiment, the mounting member 27 is provided in only one location, approximately in the center in the vertical direction Z, for the stud 2 that is located away from the pillar 6 in the long side direction X. However, for the corner stud 2a that is installed in a state of nearly abutting the pillar 6, multiple mounting members 27, for example, four mounting members 27, are provided at intervals in the vertical direction Z, as an exception.

[0029] The width dimension W1 is the horizontal width of the first portion 21a (internal portion) of the thermal insulation body 21 that is inserted into the stud 2 through the opening 13 of the stud 2. The width dimension W1 of the first portion 21a is set to be approximately the same as or slightly smaller than the width dimension W3 of the opening 13 of the stud 2 (W1 ≈ W3, or W1 ≦ W3). The width dimension W1 is preferably set to be smaller than the opening 13 so that the first portion 21a can easily pass through the opening 13 and does not get caught in the opening 13. The horizontal width of the second portion 21b of the thermal insulation body 21 that protrudes from the stud 2 may be larger than the width dimension W1 of the first portion 21a.

[0030] The insulation body 21 is the central portion that forms the main body of the long column insulation material 3 made of an organic material, and has a substantially uniform cross section along its entire longitudinal length. The insulation body 21 has at least a first portion 21a that is inserted into the inside of the stud 2 through the opening 13, and a second portion 21b (portion outside the column) that protrudes toward the indoor side 14. The first portion 21a and the second portion 21b are formed continuously along the entire length of the insulation body 21. There is no clear boundary between the first portion 21a and the second portion 21b, but the position of the locking surface of the opening locking portion 23 defines the boundary.

[0031] The insulation material body 21 may be formed to a length that allows a single piece to close the opening 13 of the stud 2, or may be formed in sections that allow multiple pieces to close the opening 13 of the stud 2. In this embodiment, the insulation material body 21 is divided into two pieces so that two pieces can completely close the opening 13 of the stud 2. The two insulation material bodies 21 are installed above and below the mounting member 27, respectively. The insulation material body 21 may be divided into three or more pieces depending on the installation conditions of the mounting member 27.

[0032] The first portion 21a is the rear portion of the thermal insulation material body 21 that is inserted into the inner space of the stud 2. This first portion 21a extends longitudinally with a constant width W1, and is shorter in the depth direction in the insertion direction 22 than the depth dimension of the stud 2 (or the width of the flange portion 17). The depth dimension of this first portion 21a is, for example, about 1 / 2 to 1 / 3 of the depth dimension of the stud 2. Note that this first portion 21a may be appropriately formed with an insertion assist portion 21d (FIG. 4) such as a tapered C-face or tapered surface at the tip end portion in the insertion direction 22, etc., to facilitate insertion into the opening 13.

[0033] The second portion 21b protruding toward the indoor side 14 is a front portion of the insulation material body 21 that protrudes outside the stud 2 and is located on the indoor side 14 when the insulation material body 21 is attached to the stud 2. This second portion 21b is formed with a protruding amount (thickness) that is approximately the same as or slightly smaller than the distance between the opening surface of the stud 2 and the back surface of the inner wall 9. The second portion 21b has a thickness (or protruding amount) that is, for example, about 1 / 3 of that of the first portion 21a.

[0034] The insertion direction 22 is the direction in which the thermal insulation material body 21 is attached to the stud 2, or the direction in which the first portion 21a of the thermal insulation material body 21 is inserted into the opening 13 of the stud 2. The insertion direction 22 is the direction from the indoor side 14 to the outdoor side 11. For example, in this embodiment, the insertion direction 22 is the short side direction Y of the building unit 8. However, the insertion direction 22 may also be the long side direction X.

[0035] The opening locking portion 23 is a horizontally protruding portion that is formed integrally with the second portion 21b that protrudes toward the indoor side 14 of the insulation material body 21 and serves as a locking flange. The opening locking portion 23 has a locking surface on the side facing the stud 2, and is locked in the insertion direction 22 from the indoor side 14 by the locking surface abutting and coming into close contact with the opening surface (lip portion 18) on the indoor side 14 of the stud 2. The opening locking portion 23 is formed overall with a width that is approximately the same as or slightly narrower than the width of the opening surface of the stud 2. The opening locking portion 23 is formed continuously over almost the entire longitudinal length of the insulation material body 21.

[0036] The rear surface of the stud 2 is formed by a web portion 16 that is installed facing the outdoor side 11, and serves as the surface to which the exterior wall 7 is attached.

[0037] The backing portion 24 is a portion of the insulation material body 21 that extends integrally in the insertion direction 22 from the first portion 21a within the stud 2 toward the back surface of the stud 2. The tip surface of the backing portion 24 abuts against the back surface (the inner surface of the web portion 16) of the stud 2, thereby determining the amount of insertion of the insulation material body 21 into the stud 2. The backing portion 24 is formed to a length that just abuts against the back surface of the stud 2 when the opening locking portion 23 is locked in the opening 13 of the stud 2. In other words, the backing portion 24 is formed to a length that is the difference between the depth dimension of the stud 2 and the depth dimension of the first portion 21a.

[0038] The backing portions 24 may be provided at any position on the insulation body 21 and in any number of places, but for example, by providing two backing portions 24, the insulation body 21 can be stably maintained in a position parallel to the studs 2. In this embodiment, the backing portions 24 are provided in approximately the same positions as the crimp fixing portions 25 in the longitudinal direction of the insulation body 21 and in the same number as the crimp fixing portions 25.

[0039] The backing portion 24 may be formed to have a smaller width than the heat insulating material body 21. The backing portion 24 may also have a bilaterally symmetrical shape. In this embodiment, the backing portion 24 is formed in a multi-step shape so that it gradually becomes thinner toward the tip when viewed in the longitudinal direction. The width of the tip of the backing portion 24 is reduced to approximately 1 / 3 or less of the width of the web portion 16.

[0040] The side surface 21c is mainly the surface of the first portion 21a of the thermal insulation body 21 within the stud 2 that faces the flange portion 17 of the stud 2. At least a portion of the side surface 21c on the opening locking portion 23 side lightly contacts the opening 13 (such as the tip of the lip portion 18) or faces it with a small gap. The crimp fixing portion 25 is provided on this side surface 21c. The width dimension W1 mentioned above is the distance between the two side surfaces 21c of the first portion 21a at a position where the crimp fixing portion 25 is not present.

[0041] The width dimension W2 of a portion of the heat insulating material body 21 is the horizontal dimension at the position where the crimped fixing portion 25 is provided on the side surface 21c. This position is the dimension including the first portion 21a and the crimped fixing portions 25 on both sides, so the width dimension W2 is wider than the width dimension W1 at a position where there are no crimped fixing portions 25 by the width of the crimped fixing portions 25 on both sides (W2>W1).

[0042] The width dimension W3 of the opening 13 is the distance between the tips of the lip portions 18 of the studs 2. This width is basically constant over the entire length of the studs 2.

[0043] The crimping fixing portion 25 is a portion that crimps the insulation material body 21 to the edge of the opening 13 of the stud 2 (such as the tip of the lip portion 18). The crimping fixing portion 25 uses the restoring force due to slight elastic deformation of the insulation material body 21, which is made of an organic material, to press and fix the insulation material body 21 to the opening 13 (crimping). The crimping fixing portion 25 is bent or crushed within the range of elastic deformation and inserted into the opening 13, and the restoring force of that portion as it tries to return to its original state presses and holds the insulation material body 21 to the opening 13. For this reason, the width dimension W2 of the crimping fixing portion 25 is made larger than the width dimension W3 of the opening 13 (W2 > W3) to an extent that the required pressing force can be obtained, within the range of elastic deformation.

[0044] The vertical dimension of the crimp fixing portion 25 in the Z direction is preferably set to, for example, about 10% or less of the overall length of the thermal insulation material body 21. This makes it possible to optimize both the ease of insertion of the thermal insulation material body 21 into the opening 13 of the stud 2 and the crimping force. If the vertical dimension of the crimp fixing portion 25 in the Z direction is greater than about 10% of the overall length of the thermal insulation material body 21, the crimping force into the opening 13 will be high but the ease of insertion will be reduced, resulting in a decrease in installation workability. Furthermore, if the vertical dimension of the crimp fixing portion 25 in the Z direction is smaller than the above, the ease of insertion will be improved but sufficient crimping force will not be obtained.

[0045] The crimp fixing portion 25 may be provided with an introduction tapered portion 25a (FIG. 5) for facilitating insertion into the opening 13, or a locking and retaining portion such as a stopper surface or a return portion for preventing removal from the opening 13. The introduction tapered portion 25a is formed on the front side of the crimp fixing portion 25 in the insertion direction 22. The locking and retaining portion is formed on the rear side of the crimp fixing portion 25 in the insertion direction 22.

[0046] (2) A plurality of crimp fixing portions 25 may be provided on the heat insulating material body 21 (FIGS. 4 and 5). One of the plurality of crimp fixing portions 25 may be a wide fixing portion 31 having a width dimension W4 wider than the other crimp fixing portions 25, and may be provided at a position other than the center of the heat insulating material body 21. The stud 2 may have a wide receiving portion 32 for accommodating the wide fixing portion 31 at a position that matches the wide fixing portion 31 of the opening 13 (FIGS. 7 and 8).

[0047] Here, a single crimp fixing portion 25 may be provided for the thermal insulation material body 21, but it is preferable to provide multiple crimp fixing portions 25. Providing multiple crimp fixing portions 25 for the thermal insulation material body 21 means that the crimp fixing portions 25 are present at multiple locations in the longitudinal direction of the thermal insulation material body 21. The multiple crimp fixing portions 25 can be provided in two locations, or three or more locations. In this embodiment, the crimp fixing portions 25 are provided in two locations.

[0048] As shown in FIG. 5(b), the wide fixing portion 31 is a crimping portion 25 having a stronger crimping force (pressing force) than the other crimping portions 25 (FIG. 5(a)). The width dimension W4 including the first portion 21a is wider than that of the other crimping portions 25, and the amount of deformation and recovery when crimping into the opening 13 is increased, thereby increasing the crimping force of the wide fixing portion 31. By making the width dimension W4 of the wide fixing portion 31 wider than that of the other crimping portions 25, it becomes possible to crimp a wider width. For example, the width dimension W4 of the wide fixing portion 31 is about 2 mm larger than the width dimension W1 of the other crimping portions 25. However, the difference between the width dimension W1 of the other crimping portions 25 and the width dimension W4 of the wide fixing portion 31 is not limited to 2 mm. When there are multiple other crimped fixing portions 25, the width dimension W2 of each is set to be equal so that uniform crimping force is obtained. Note that the crimped fixing portion 25 in the broad sense includes the wide fixing portion 31. The crimped fixing portion 25 in the narrow sense refers to only the other crimped fixing portions 25 excluding the wide fixing portion 31.

[0049] The wide fixing portion 31 may be provided in the longitudinal center of the thermal insulation material body 21, but is preferably provided in a position other than the longitudinal center. A position other than the longitudinal center of the thermal insulation material body 21 refers to a position that is displaced to a position different from its original position when the thermal insulation material body 21 is turned upside down. The central portion of the thermal insulation material body 21 is not displaced even when the thermal insulation material body 21 is turned upside down, and therefore remains in the same position.

[0050] In addition, in order to indicate the correct installation orientation in the vertical direction Z, the insulation material body 21 may have a mark 33 (Figure 3) indicating the correct orientation, such as an arrow, formed on the surface of the second part 21b protruding toward the indoor side 14 so that it can be seen from the indoor side 14.

[0051] The position of the opening 13 that coincides with the wide fixing part 31 is the position into which the wide fixing part 31 is inserted when the heat insulating material body 21 is attached in the correct orientation. When the heat insulating material body 21 is turned upside down, the wide fixing part 31 is displaced in the vertical direction Z, and this position becomes a position into which the wide fixing part 31 cannot be inserted.

[0052] The wide receiving portion 32 is a portion that receives the wide fixing portion 31 formed in the opening 13 of the stud 2. The wide receiving portion 32 is an exceptional portion where the width dimension W5 is locally increased relative to the opening 13, which generally has a constant width dimension W3. Because the wide receiving portion 32 has a wide width dimension W5, the other crimp fixing portions 25 cannot crimp the wide receiving portion 32 very strongly or cannot crimp the wide receiving portion 32 at all. The wide receiving portion 32 is set to a width dimension W5 that allows only the wide receiving portion 32 to be crimped with the required crimping force. The width dimension W5 of the wide receiving portion 32 is preferably wider than the other crimp fixing portions 25 by the same amount that the wide fixing portion 31 is wider than the other crimp fixing portions 25. For example, in the example described above, the wide receiving portion 32 would have a width dimension W5 that is approximately 2 mm larger overall than the width dimension W3 of the other crimp fixing portions 25. However, the difference between the width dimension W3 of the opening 13 and the width dimension W5 of the wide receiving portion 32 is not limited to 2 mm.

[0053] Incidentally, the wide fixing portion 31 and the wide receiving portion 32 are provided assuming that there will be dimensional errors in the opening 13 of the stud 2. Therefore, the wide fixing portion 31 and the wide receiving portion 32 are actually set to have widths W4 and W5 that take into account the magnitude of the error in the width dimension W3 of the opening 13 and avoid the impact of the error when it becomes larger. That is, the width dimension W4 of the wide fixing portion 31 and the width dimension W5 of the wide receiving portion 32 are set based on the value of the error in the width dimension W3 of the opening 13. As a result, the width dimension W4 of the wide fixing portion 31, the width dimension W5 of the wide receiving portion 32, the width dimension W2 of the crimp fixing portion 25, the width dimension W3 of the opening 13, and the width dimension W1 of the thermal insulation body 21 increase in this order (W4 > W5 > W2 > W3 > W1).

[0054] The wide receiving portion 32 can be formed, for example, by cutting out the lip portion 18 of the stud 2. As shown in FIG. 9, the wide receiving portion 32 can be cut out to an appropriate size up to the point where the lip portion 18 disappears. In this case, the wide fixing portion 31 is pressed against the inner surface of the flange portion 17. The lip portion 18 can also be cut out over its entire width so as to include part of the flange portion 17.

[0055] The boundary portion between the wide receiving portion 32 and other portions of the opening 13 may be left as a right-angled step portion if the lip portion 18 remains in the wide receiving portion 32, or may be cut out at an angle to form an inclined step portion to eliminate the sharp corners of the step portion.

[0056] (3) As shown in FIG. 3, the crimp fixing portion 25 may be provided at two locations of the heat insulating material body 21, one near the upper end (H1) and the other near the lower end (L1). As shown in FIG. 7, the wide receiving portion 32 may be provided at a position that coincides with the wide fixing portion 31 near at least one of the upper end (H2) and the lower end (L2) of the stud 2.

[0057] Here, the crimp fixing portion 25 may be provided at a position other than the two positions near the upper end (H1) and near the lower end (L1) of the insulation body 21, but it is preferable to provide the crimp fixing portion 25 at two positions near the upper end (H1) and near the lower end (L1) of the insulation body 21.

[0058] The upper end (H1) of the heat insulating material body 21 is the upper end of the heat insulating material body 21. The vicinity of the upper end (H1) of the heat insulating material body 21 is the upper end of the heat insulating material body 21 and its surrounding area. For ease of explanation, the "upper end (H1)" may include "the upper end (H1) and its vicinity."

[0059] The lower end (L1) of the heat insulating material body 21 is the lower end of the heat insulating material body 21. The vicinity of the lower end (L1) of the heat insulating material body 21 is the lower end of the heat insulating material body 21 and its surrounding area. For ease of explanation, the "lower end (L1)" may include "the lower end (L1) and its vicinity."

[0060] For example, when the length of the insulation body 21 is approximately equal to the length of the stud 2, the upper end (H1) and lower end (L1) of the insulation body 21 approximately coincide with the upper end (H2) and lower end (L2) of the stud 2, respectively.

[0061] For example, if the length of the insulation body 21 is not equal to the length of the stud 2, the upper end (H1) and lower end (L1) of the insulation body 21 may be positioned differently from the upper end (H2) and lower end (L2) of the stud 2.

[0062] That is, when the length of the thermal insulation material body 21 is made approximately half the length of the stud 2, as shown in Figure 3, the upper end (H1) of the lower thermal insulation material body 21 is located approximately in the middle of the stud 2, and the lower end (L1) is approximately aligned with the lower end (L2) of the stud 2. In addition, the upper end (H1) of the upper thermal insulation material body 21 is located approximately in the middle of the stud 2.

[0063] Of the two crimp fixing portions 25 at the upper end (H1) and lower end (L1) of the heat insulating material body 21, one is a normal one and the other is a wide fixing portion 31. The wide fixing portion 31 may be provided at either the upper end (H1) or the lower end (L1) of the heat insulating material body 21.

[0064] The wide receiving portion 32 may be provided at a position other than near the upper end (H2) or near the lower end (L2) of the stud 2, but it is preferable to provide the wide receiving portion 32 at least one or both of near the upper end (H2) and near the lower end (L2) of the stud 2.

[0065] The upper end (H2) of the stud 2 is the upper portion of the stud 2 that is near the ceiling beam 5. The vicinity of the upper end (H2) of the stud 2 is the upper portion of the stud 2 that is near the ceiling beam 5 and its surrounding area. For ease of explanation, the "upper end (H2)" may include "the vicinity of the upper end (H2)."

[0066] The lower end (L2) of the stud 2 is the lower portion of the stud 2 that is near the floor beam 4. The vicinity of the lower end (L2) of the stud 2 is the lower portion of the stud 2 that is near the floor beam 4 and its surrounding area. For ease of explanation, the "lower end (L2)" may include "the vicinity of the lower end (L2)."

[0067] More specifically, for example, if the length of the insulation material body 21 is approximately equal to the length of the stud 2, the wide fixing portion 31 may be provided at the upper end (H1) or lower end (L1) of the insulation material body 21. The wide receiving portion 32 may be provided at either the upper end (H2) or lower end (L2) of the stud 2, at a position that coincides with the wide fixing portion 31. The opening 13 of the stud 2 receives the crimp fixing portion 25 of the insulation material body 21. The wide receiving portion 32 of the stud 2 receives the wide fixing portion 31 of the insulation material body 21.

[0068] Furthermore, for example, when the length of the insulation body 21 is approximately half the length of the stud 2, the wide fixing portion 31 of the lower insulation body 21 is provided at the upper end (H1) or lower end (L1) of the insulation body 21. The wide receiving portion 32 is provided at either the approximate middle or lower end (L2) of the stud 2, at a position that coincides with the wide fixing portion 31.

[0069] Similarly, the wide fixing portion 31 of the upper insulation body 21 is provided at the upper end (H1) or lower end (L1) of the insulation body 21, and the wide receiving portion 32 is provided at either the upper end (H2) or approximately the middle of the stud 2, at a position that coincides with the wide fixing portion 31.

[0070] The opening 13 of the stud 2 receives the crimped fixing portion 25 of the insulation material body 21. The wide-width receiving portion 32 of the stud 2 receives the wide-width fixing portion 31 of the upper insulation material body 21 and the wide-width fixing portion 31 of the lower insulation material body 21. The wide-width fixing portion 31 of the upper insulation material body 21 and the wide-width fixing portion 31 of the lower insulation material body 21 may be provided on the same side in the longitudinal direction, or on different sides.

[0071] In this embodiment, the wide fixing portion 31 is provided at the lower end (L1) of the lower insulation body 21, and the wide receiving portion 32 is provided at the lower end (L2) of the stud 2. The wide fixing portion 31 is provided at the upper end (H1) of the upper insulation body 21, and the wide receiving portion 32 is provided at the upper end (H2) of the stud 2. The wide fixing portion 31 is provided on different longitudinal sides of the lower insulation body 21 and the upper insulation body 21. The wide receiving portions 32 are provided both near the upper end (H2) and near the lower end (L2) of the stud 2.

[0072] It is preferable that the normal crimp fixing portion 25 and the wide fixing portion 31 are provided at positions where they do not overlap at all or hardly overlap each other when the heat insulating material body 21 is turned upside down.

[0073] 4, the normal crimp fixing portion 25 is provided at a position closer to one end of the thermal insulation body 21. The wide fixing portion 31 is provided at a position away from the other end of the thermal insulation body 21 by about the length of the normal crimp fixing portion 25. Conversely, the wide fixing portion 31 may be provided at a position closer to the other end of the thermal insulation body 21, and the normal crimp fixing portion 25 may be provided at a position away from one end of the thermal insulation body 21 by about the length of the wide fixing portion 31.

[0074] In this case, by providing the normal crimp fixing portion 25 and the wide fixing portion 31 slightly away from the end of the thermal insulation material body 21, the separated portion can be used as an adjustment allowance 21e for adjusting the length of the thermal insulation material body 21. In other words, the length of the thermal insulation material body 21 can be finely adjusted (on-site adjustment) by cutting off the adjustment allowance 21e at the end, as necessary. The adjustment allowance 21e can be provided on either or both of the crimp fixing portion 25 side and the wide fixing portion 31 side, and if provided on both sides, it may or may not be of equal size.

[0075] <Operation> The operation of this embodiment will now be described.

[0076] For example, in a building unit 8, an exterior wall 7 is attached with rivets from the interior side 14 to a stud 2 installed between floor beams 4 and ceiling beams 5. Furthermore, a mounting member 27 such as a wooden brick is attached to the stud 2 from the interior side 14. Then, for example, as in the comparative example of FIG. 11 , a heat insulating material 41 is attached to the inside of the exterior wall 7 from the interior side 14 so as to cover the exterior wall 7. This heat insulating material 41 may be inorganic, such as glass wool. Then, a heat insulating material 26 is attached to the stud 2 from the interior side 14.

[0077] The insulating material 26 of the comparative example uses an inorganic material such as glass wool, similar to the insulating material 41. In this case, the insulating material 26 is attached by being pushed into the inside of the stud 2 while being deformed to pass through the opening 13.

[0078] However, when insulating material 26, such as glass wool, which is easily deformed and has an indeterminable shape, is installed inside stud 2, deformation of the insulating material 26 can easily create gaps between the opening 13. This causes air to enter and exit the stud 2 through the gaps, resulting in a problem of reduced thermal performance. To prevent this, glass wool that is larger than the internal volume of the stud 2 is packed inside, but if the glass wool is made larger, it takes time and effort to insert the glass wool into the stud 2, reducing productivity. In addition, making the wool larger increases the cost of the glass wool.

[0079] Therefore, in order to prevent the deterioration of insulating performance caused by gaps due to deformation as described above and the decrease in productivity due to the insertion of larger glass wool, the use of organic insulating material 42 as shown in Figures 12 and 13 is being considered. Organic insulating material 42 has shape retention properties and maintains a stable, fixed shape, so gaps due to deformation are less likely to occur and it is easier to attach to the studs 2 than glass wool.

[0080] When insulating material 42 is made of an organic material, a means for fixing insulating material 42 to stud 2 is required. For example, if insulating material 42 is attached to stud 2 with adhesive tape, installation is relatively easy, but with adhesive tape it is difficult to keep insulating material 42 in the same position for a long period of time, such as the service life of building 1.

[0081] In contrast, since mounting member 27 is installed on stud 2, it is possible to use mounting member 27 to hold insulating material 42. For example, it is possible to provide hole 43 in the portion of insulating material 42 that interferes with mounting member 27, which fits into and holds the insulating material 42 in a portion that protrudes toward indoor side 14 beyond opening 13 of mounting member 27. Then, by tightly fitting hole 43 into mounting member 27, mounting member 27 can hold insulating material 42 to stud 2 for a long period of time.

[0082] However, the task of aligning and fitting the hole 43 to the mounting member 27 is time-consuming and labor-intensive, resulting in poor productivity. Furthermore, problems arise with the dimensional accuracy, positional accuracy, and mounting accuracy between the mounting member 27 and the hole 43. Furthermore, the cross-sectional shape of the insulating material 42 having the hole 43 is not uniform over its entire length, resulting in a complex structure, poor storage properties, and weakened strength around the hole 43.

[0083] Furthermore, the mounting members 27 for the studs 2 themselves require parts and installation costs, and can cause a loss of thermal performance, so there is a desire to reduce their number as much as possible. Currently, it is structurally possible to reduce the number of studs 2 other than the corner studs 2a to just one. In this case, the insulation material 42 will no longer be held in place by the fit between the hole 43 and the mounting member 27.

[0084] Therefore, in this embodiment, a pillar insulation material 3 is provided that has a crimp fixing portion 25 integral with the insulation material body 21. The pillar insulation material 3 is then crimped and fixed to the opening 13 of the stud 2 by the crimp fixing portion 25.

[0085] For example, for a stud 2 provided with a mounting member 27 in only one location, the pillar insulation material 3 is provided separately in upper and lower sections, and the upper and lower pillar insulation materials 3 are attached separately to the upper and lower sides of the mounting member 27 on the stud 2. The pillar insulation material 3 may be attached at an angle, for example, so that it is inserted into the opening face of the stud 2 from the top or bottom end first.

[0086] The pillar insulation material 3 is then attached to the stud 2 without any gaps by inserting the first portion 21a of the insulation material body 21 from the indoor side 14 through the opening 13 into the inside of the stud 2 until the backing portion 24 abuts against the back surface of the stud 2, and then engaging the opening locking portion 23 with the opening surface of the stud 2. At this time, the multiple crimping fixing portions 25 provided on the insulation material body 21 crimp and fix the insulation material body 21 to the edge of the opening 13 of the stud 2 at multiple positions.

[0087] This allows the pillar insulation material 3 to be self-held on the stud 2 by the crimp fixing portion 25 without relying on the mounting member 27. Also, the pillar insulation material 3 does not require a separate fixing means such as adhesive tape for fixing. The pillar insulation material 3 has a simple shape with an almost uniform cross section.

[0088] Since the heat insulating material body 21 does not rely on the mounting member 27, there are no particular problems with the dimensional accuracy or positional accuracy of the crimp fixing portion 25. Furthermore, even though the heat insulating material body 21 has the crimp fixing portion 25, the cross section is almost uniform over its entire length, so there are no particular concerns about strength. In other words, there are no drawbacks such as those of the heat insulating material 42 in Figures 12 and 13.

[0089] In this case, the studs 2 do not require high dimensional precision like the pillars 6, ceiling beams 5, and floor beams 4 that make up the unit frame, so there is a certain degree of error in the dimensions of the openings 13 of the studs 2. As a result, it is possible that the openings 13 of the studs 2 may be wider or narrower than the design values. If the openings 13 are narrow, they can be used without any particular problems, but if the openings 13 are wide, the grip of the crimp fixing portions 25 will be weaker, and there is a risk that the insulation body 21 may not be held properly.

[0090] Therefore, one of the crimped fixing portions 25 of the pillar insulation material 3 is made into a wide fixing portion 31. As a result, even if the opening 13 of the stud 2 is wider than the design value due to a dimensional error, by using the wide fixing portion 31, it becomes possible to attach the pillar insulation material 3 to the stud 2 and have it securely held in place by the wide fixing portion 31.

[0091] That is, when the opening 13 of the stud 2 is as designed or narrower than the designed value, the pillar insulation material 3 is used in the correct orientation. The wide fixing portion 31 is installed at the position of the wide receiving portion 32, and is crimped and fixed between the wide receiving portion 32. The normal crimping fixing portion 25 is also crimped and fixed to the opening 13.

[0092] If the opening 13 of the stud 2 is wider than designed, the pillar insulation material 3 is turned upside down and the position of the wide fixing portion 31 is changed before use. The wide fixing portion 31 is installed at a position on the opening 13 other than the wide receiving portion 32, and is caulked and fixed to the opening 13. The wide fixing portion 31 fits into an opening 13 that is wider than the design value. Therefore, even if the opening 13 of the stud 2 is wider than the design value, the pillar insulation material 3 can be held in place by the stud 2.

[0093] <Effects> According to this embodiment, the following effects can be obtained.

[0094] (Effect 1) The pillar insulation material 3 may be made of an organic material. A pillar insulation material 3 made of an organic material has shape retention properties and maintains a fixed shape, so it does not flexibly deform like glass wool, which can create gaps between the opening 13 and the material, causing air to enter and exit through the gaps and resulting in a decrease in insulation performance. In other words, a pillar insulation material 3 made of an organic material can prevent a decrease in insulation performance caused by gaps due to deformation of the insulation body 21.

[0095] The pillar insulation material 3 made of an organic material may have an insulation material body 21, an opening locking portion 23, and a backing portion 24. In this way, simply by inserting the insulation material body 21 into the opening 13 of the stud 2 from the indoor side 14, the backing portion 24 abuts against the rear surface of the stud 2, and the opening locking portions 23 lock onto both sides of the opening 13 of the stud 2, closing the opening 13 and attaching the insulation material body 21 to the stud 2 without any gaps. By having the backing portion 24, the insulation material body 21 can be made smaller in volume and can be installed accurately inside the stud 2.

[0096] At this time, the insulation material body 21 may be fixed by crimping to the opening 13 by deforming the crimp fixing portion 25, which is formed so that the width dimension W2 of part of the side surface 21c of the first portion 21a is partially wider than the width dimension W3 of the opening 13 of the stud 2. In this way, the insulation material body 21 is self-held to the stud 2 by the restoring force of the crimp fixing portion 25.

[0097] Therefore, the pillar insulation material 3 does not require a separate fixing means such as adhesive tape to fix the insulation material body 21 to the stud 2. Furthermore, the pillar insulation material 3 does not require the use of mounting members 27 such as wooden bricks to attach the insulation material body 21 to the stud 2. As a result, the building unit 8 can reduce the number of mounting members 27, thereby reducing the cost of the mounting members 27 and the effort required for installation.

[0098] The pillar insulation material 3 can self-hold the insulation material body 21 in the same position on the stud 2 for a long period of time by using the crimping fixing portion 25. The crimping fixing portion 25 can also prevent the insulation material body 21 from falling off from the stud 2 due to external vibrations. Furthermore, the crimping fixing portion 25 can prevent noise caused by rattle of the insulation material body 21. The insulation material body 21 continues to stably exert its insulating effect without change over the service life of the building 1, for example, for a long period of time of 60 years or more.

[0099] (Effect 2) The pillar insulation material 3 may be provided with a plurality of crimp fixing portions 25 on the insulation material body 21. This allows the insulation material body 21 to be stably crimped and fixed to the opening 13 of the stud 2 at a plurality of locations by the plurality of crimp fixing portions 25.

[0100] In the pillar insulation material 3, one of the multiple crimped fixing portions 25 may be a wide fixing portion 31 that is wider than the other crimped fixing portions 25 and may be provided at a position other than the center of the insulation material body 21. This makes it possible to provide the wide fixing portion 31 with a stronger crimping force than the other crimped fixing portions 25. Then, by turning the insulation material body 21 upside down and changing the position of the wide fixing portion 31 in the vertical direction Z, the wide fixing portion 31 can be used at a different position in the opening 13.

[0101] The stud 2 has a wide receiving portion 32 that accommodates the wide fixing portion 31 at a position that coincides with the wide fixing portion 31 of the opening 13. This allows the wide fixing portion 31 to be received by the wide receiving portion 32 in the normal state. In addition, by turning the insulation body 21 upside down, the wide fixing portion 31 can be used in a position different from the wide receiving portion 32.

[0102] Therefore, if there is a dimensional error in the opening 13 of the stud 2 and the opening 13 is wide, the insulation body 21 can be turned upside down and attached to the opening 13, so that the insulation body 21 can be crimped and fixed to the opening 13 by the wide fixing part 31. Therefore, the pillar insulation material 3 can directly accommodate dimensional errors in the opening 13.

[0103] (Effect 3) In the pillar insulation material 3, the crimp fixing portions 25 may be provided in two locations: near the upper end (H1) and near the lower end (L1) of the insulation material body 21. This allows the number of crimp fixing portions 25 to be reduced to a minimum. In addition, the crimp fixing portions 25 can be installed in locations that are easy to understand and handle.

[0104] In the pillar insulation material 3, the wide receiving portion 32 may be provided in a position that coincides with the wide fixing portion 31, near at least one of the upper end (H2) and the lower end (L2) of the stud 2. This allows the wide receiving portion 32 to be provided in a position on the stud 2 that is easy to process and handle.

[0105] The wide fixing portion 31 can also be provided at a position that is easy to form and handle, either near the upper end (H1) or near the lower end (L1) of the thermal insulation body 21. By positioning the wide fixing portion 31 at the end of the thermal insulation body 21, it becomes easy to attach the thermal insulation body 21 to the opening 13 of the stud 2. [Explanation of symbols]

[0106] 2 studs 3. Pillar insulation 13 Opening 14 Indoor 16 Web section (rear surface) 21 Insulation material body 21a First part 21b Second part 21c side 22 Insertion direction 23 Opening locking portion 24 Backing 25 Crimped fixing part 31 Wide fixed part 32 Wide receiving part H1 Upper end (column insulation) L1 Bottom end (column insulation) H2 Upper end (stud) L2 lower end (stud) W1 Width dimension (first part) W2 Width dimension (crimped fixing part) W3 Width dimension (opening) W4 Width dimension (wide fixed part) W5 Width dimension (wide receiving part) Z vertical direction

Claims

1. A pillar insulation material for insulating metal studs with a C-shaped cross section, a heat insulating material body formed of an organic material, having a first portion with a width dimension that can be inserted into the interior of the stud through an opening of the stud that opens to the indoor side, and extending in the vertical direction along the stud; an opening locking portion formed on a second portion of the thermal insulation body protruding from the stud toward the indoor side so as to protrude on both sides of the opening of the stud and capable of being locked to the stud in an insertion direction; a backing portion formed in the first portion of the thermal insulation body within the stud and abutting against a rear surface of the stud; The insulating material for pillars is characterized in that the insulating material body has a crimped fixing portion on the side, in which the width dimension of part of the first part is partially wider than the width dimension of the opening in the partition wall.

2. The pillar insulation material according to claim 1, The crimp fixing portion is provided in plurality on the heat insulating material body, One of the plurality of crimp fixing portions is a wide fixing portion having a width dimension wider than the other crimp fixing portions, and is provided at a position other than the center of the thermal insulation body, The pillar insulation material is characterized in that the stud has a wide receiving portion that accommodates the wide fixing portion at a position that coincides with the wide fixing portion of the opening.

3. The pillar insulation material according to claim 2, The crimp fixing portion is provided at two locations, one near the upper end portion and one near the lower end portion of the heat insulating material body, An insulating material for pillars, characterized in that the wide-width receiving portion is provided at a position that coincides with the wide-width fixing portion, at least in the vicinity of the upper end or the lower end of the partition wall.

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