Insulation material for studs

Abstract

To prevent a decrease in thermal insulation performance which is primarily caused by gaps resulting from deformation of a thermal insulation material body.SOLUTION: A thermal insulation material 21 for a stud closes an opening 16 formed between a side surface 3a of a pillar 3 and an inward-facing lip portion 19 provided on a vertical surface portion 18 of a stud 7 by adjacently arranging the pillar 3 and the stud 7 having an L-shaped cross section and having a horizontal surface portion 17 and the vertical surface portion 18 with the horizontal surface portion 17 of the stud 7 facing toward the side surface 3a of the pillar 3, and includes: a thermal insulation material body 31 made of an organic material and capable of being inserted into an inside of the stud 7 from the opening 16; and a holding portion 32 holding the thermal insulation material body 31 in the opening 16. The holding portion 32 has a caulked portion 33 caulked by the side surface 3a of the pillar 3 or the lip portion 19 when entering the opening 16. The thermal insulation material body 31 has a backing portion 34 which abuts against the horizontal surface portion 17 at a portion inserted into an inside of the opening 16.SELECTED DRAWING: Figure 4

Description

Technical Field

[0006] , , , , ,

[0001] This invention relates to a heat insulating material for studs.

Background Art

[0002] Buildings such as houses have heat insulating materials installed inside the walls in order to provide heat insulation (see, for example, Patent Document 1). The heat insulating materials are also attached to the surface of the columns installed inside the walls and the inner side (internal space) of the studs.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Inside the stud, for example, a heat insulating material such as glass wool, which has no shape retention property, is easily deformed, and its shape is not fixed. However, in this case, the heat insulating material may deform over time, creating a gap between the column and the stud, which may reduce the heat insulation performance.

[0005] Therefore, the main object of the present invention is to contribute to the improvement of the above problems.

Means for Solving the Problems

[0006] In response to the above problems, the present invention is a heat insulating material for a stud that closes an opening formed between a side surface of the column and an inward lip portion provided on a vertical surface portion of the stud by adjacently arranging the column and a stud having an L-shaped cross section with a horizontal surface portion and a vertical surface portion, with the horizontal surface portion of the stud facing the side surface of the column, a heat insulating material main body formed of an organic-based material and insertable from the opening into the inside of the stud, It has a holding part that holds the main body of the insulation material in the opening, The retaining portion has a crimping portion that is crimped by the side surface or lip portion of the column when it enters the opening. The aforementioned insulation material body is characterized in that the portion inserted into the inside of the opening has a backing portion that abuts against the side surface portion. [Effects of the Invention]

[0007] According to the present invention, the above configuration makes it possible to prevent a decrease in thermal insulation performance caused by gaps resulting from deformation of the thermal insulation material itself. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view of a building (building unit) using the stud insulation material according to this embodiment. [Figure 2] Figure 1 is a partially enlarged perspective view from a different direction. [Figure 3] This is a perspective view showing the attachment of studs to the building unit. [Figure 4] This is a cross-sectional view showing the insulation material for studs in Example 1. [Figure 5A] This is a cross-sectional view of the first modified example of Example 1. [Figure 5B] (a) is an end view of the stud insulation material shown in Figure 5A, and (b) is a right side view of (a). [Figure 6A] This is a cross-sectional view of a second modified example of Example 1. [Figure 6B] (a) is an end view of the stud insulation material in Figure 6A, and (b) is a right side view of (a). [Figure 7A] This is a cross-sectional view of a third modified example of Example 1. [Figure 7B] (a) is an end view of the stud insulation material in Figure 7A, and (b) is a right side view of (a). [Figure 8A] This is a cross-sectional view of a fourth modified example of Example 1. [Figure 8B] (a) is a left side view of the stud insulation material shown in Figure 8A, and (b) is an end view of (a). [Figure 9A] It is a cross-sectional view of the fifth modification of Example 1. [Figure 9B] (a) is a left side view of the heat insulating material for the intermediate pillar in Fig. 9A, and (b) is an end view of (a). [Figure 10] It is a cross-sectional view showing the heat insulating material for the intermediate pillar of Example 2. [Figure 11A] It is a cross-sectional view of the first modification of Example 2. [Figure 11B] (a) is a left side view of the heat insulating material for the intermediate pillar in Fig. 11A, and (b) is an end view of (a). [Figure 12A] It is a cross-sectional view of the second modification of Example 2. [Figure 12B] (a) is a left side view of the heat insulating material for the intermediate pillar in Fig. 12A, and (b) is an end view of (a). [Figure 13A] It is a cross-sectional view of the third modification of Example 2. [Figure 13B] (a) is a left side view of the heat insulating material for the intermediate pillar in Fig. 13A, and (b) is an end view of (a). [Figure 14] It is an end view showing the loading posture during transportation of the heat insulating material for the intermediate pillar according to the fourth modification of Example 2. [Figure 15] It is a cross-sectional view showing the heat insulating material for the intermediate pillar according to the comparative example.

Mode for Carrying Out the Invention

[0009] This embodiment will be described in detail with reference to Figs. 1 to 15.

Examples

[0010] <Configuration> The configuration of this example is as follows.

[0011] Fig. 1 is a perspective view showing the structure of building 1. Building 1 may have any structure, but in this example, for example, it is a unit building. The unit building is a building 1 that can be constructed in a short period by transporting a rectangular parallelepiped building unit 2 prefabricated in a factory to a construction site and assembling it at the construction site.

[0012] In this embodiment, the directions are defined as the long side direction X, the short side direction Y, and the vertical direction Z, with respect to building unit 2. The long side direction X and the short side direction Y are horizontal directions that are perpendicular to each other. The vertical direction Z points almost directly upwards and almost directly downwards, and is perpendicular to the long side direction X and the short side direction Y.

[0013] As shown in Figure 1, the building unit 2 used in the modular building has a box-frame structure unit frame inside that serves as the skeleton.

[0014] The unit frame consists of four columns 3, four floor beams 4, and four ceiling beams 5. The columns 3, floor beams 4, and ceiling beams 5 are made of metal. The columns 3 may be hollow rectangular cross-section members (square steel pipes). The floor beams 4 and ceiling beams 5 may be inwardly C-shaped cross-section members (shaped steel).

[0015] The four floor beams 4 connect the lower ends of the four columns 3 in a rectangular shape. The four ceiling beams 5 connect the upper ends of the four columns 3 in a rectangular shape.

[0016] Inside the rectangular floor frame, which is composed of four floor beams 4, multiple floor joists 4a are installed in parallel, and floorboards 4b are attached to the upper surface of the floor joists 4a so as to cover the floor frame. Similarly, inside the rectangular ceiling frame, which is composed of four ceiling beams 5, multiple ceiling joists 5a are installed in parallel, and ceiling boards 5b are attached to the lower surface of the ceiling joists 5a so as to cover the ceiling frame.

[0017] Figure 2 is a partially enlarged perspective view of a portion of Building 1 in Figure 1, viewed from a different angle. Between the floor beam 4 and ceiling beam 5 of Building 1, intermediate columns 6 and 7 are installed as needed, extending in the vertical direction Z. The intermediate columns 6 and 7 are long vertical members that connect the floor beam 4 and the ceiling beam 5. The intermediate columns 6 and 7 have a nearly uniform cross-section throughout the entire vertical direction Z. The intermediate columns 6 and 7 are made of metal.

[0018] Multiple intermediate studs 6 and 7 are installed parallel to each other at least on the exterior side 11 of the building unit 2, with some spacing between them. The intermediate studs 6 and 7 include intermediate studs (stud 6) which are installed in the middle of a pair of columns 3, away from the columns 3, and corner studs (stud 7) which are installed adjacent to the side surface 3a of the columns 3 at the corner of the building unit 2, almost in contact with them. Different cross-sectional shapes are used for the intermediate studs (stud 6) and corner studs (stud 7).

[0019] Side 3a of column 3 is the side of column 3 adjacent to the corner stud 7. The outdoor area is the part that is outside the outer perimeter of building 1. In the case of building unit 2, the outdoor side 11 is the outside of the side without an adjacent building unit 2, and the indoor side 12 is the inside of building unit 2, etc.

[0020] The studs 6 and 7 are equipped with mounting parts 13 (Figure 3) at their ends in the vertical direction Z, either integrally or separately, for attachment to the floor beam 4 and ceiling beam 5. The mounting parts 13 are formed into a nearly horizontal surface and are in contact with the upper surface of the floor beam 4 and the lower surface of the ceiling beam 5, and are fixed in the vertical direction Z with fasteners such as bolts.

[0021] The intermediate stud 6 has upper and lower mounting parts 13 provided within the cross-section of the stud 6, and is fixed to the floor beam 4 and ceiling beam 5 at two points each.

[0022] Because the corner stud 7 is located near the column 3, the mounting portion 13 is installed so as to protrude outwards from the stud 7 (on the side opposite to the column 3). The upper mounting portion 13 is fixed to the ceiling beam 5 in two places, while the lower mounting portion 13 is fixed to the floor beam 4 in only one place. As a result, the corner stud 7 is installed in a way that makes it slightly less resistant to twisting than the intermediate stud 6.

[0023] These studs 6 and 7 are mainly used to attach the exterior wall 14 (Figure 4) to the building 1. The exterior wall 14 is, for example, an exterior wall panel. The exterior wall 14 is fixed to the studs 6 and 7 from the interior side 12 with rivets 15.

[0024] As shown in Figure 2, the studs 6 and 7 have openings 16 on the side facing the interior 12. The intermediate stud 6 is made of a member with a roughly C-shaped cross-section. The intermediate stud 6 is installed with the C-shaped opening 16 facing the interior 12. The rivets 15 for attaching the exterior wall 14 are inserted into the inside of the intermediate stud 6 through the C-shaped opening 16. The rivets 15 are installed on the stud 6 facing from the interior 12 toward the exterior 11 and are installed so as to be nearly perpendicular to the exterior wall 14.

[0025] Furthermore, the corner stud 7 (Figure 4) is a member with a roughly L-shaped cross-section having a horizontal surface 17 and a vertical surface 18. The corner stud 7 is positioned adjacent to the column 3 with the edge of the horizontal surface 17 facing almost perpendicular to the side surface 3a of the column 3. The edge of the horizontal surface 17 on the column 3 side may abut against the side surface 3a of the column 3, or it may be slightly separated. The vertical surface 18 is installed almost parallel to the side surface 3a of the column 3 at a distance of approximately the width of the horizontal surface 17.

[0026] The rivets 15 for attaching the exterior wall 14 are inserted into the inside of the stud 7 through an opening 16 formed between the lip portion 19 of the corner stud 7 and the side surface 3a of the column 3. The rivets 15 are installed on the side surface 17 of the stud 7, facing from the interior side 12 towards the exterior side 11 (outside in the interior-outside direction), and are attached so as to be almost perpendicular to the exterior wall 14.

[0027] The corner stud 7 has a side surface 17 that is approximately parallel to the exterior wall 14 and faces the outdoor side 11. Furthermore, the side surface 17 has a nearly uniform width along its entire length.

[0028] The vertical surface 18 of the stud 7 is a surface that extends almost perpendicularly from the side edge of the horizontal surface 17 opposite to the column 3 toward the interior side 12. The vertical surface 18 is almost parallel to the side surface 3a of the column 3. Also, the vertical surface 18 is almost perpendicular to the exterior wall 14. Furthermore, the vertical surface 18 has a nearly uniform width along its entire length. The vertical surface 18 is narrower than the side surface 3a of the column 3. For example, the width of the vertical surface 18 may be about 1 / 2 to 2 / 3 of the width of the side surface 3a of the column 3.

[0029] At least, an inward-facing lip portion 19 is integrally formed on the interior side 12 edge of the vertical surface portion 18. The lip portion 19 is a bent portion that reinforces the stud 7. The lip portion 19 extends slightly from the interior side 12 edge of the vertical surface portion 18 toward the side surface 3a of the column 3. The lip portion 19 has a substantially uniform width along its entire length. The length of the lip portion 19 is approximately the same as the thickness of the vertical surface portion 18 and the horizontal surface portion 17, or several times the thickness. The vertical surface portion 18, the horizontal surface portion 17, and the lip portion 19 have substantially uniform thickness. If necessary, a similar lip portion may also be formed on the edge of the horizontal surface portion 17 so as to extend along the side surface 3a of the column 3.

[0030] The lip portion 19 of the vertical portion 18 is approximately parallel to the horizontal portion 17 and is approximately perpendicular to the vertical portion 18. The lip portion 19 forms an opening 16 between itself and the side surface 3a of the column 3. The surface on which the opening 16 is formed by the lip portion 19 corresponds to the interior side 12 of the corner stud 7 and becomes the opening surface of the stud 7. The opening surface of the stud 7 is approximately the same width as the horizontal portion 17. The area behind the opening surface (towards the exterior wall 14) becomes the interior space for the corner stud 7 that is adjacent to the column 3. The interior space of the stud 7 is formed using the side surface 3a of the column 3.

[0031] The opening 16 is an open portion formed using most of the opening surface of the stud 7, and extends with a uniform width in the vertical direction Z. The opening surface and the opening 16 are approximately parallel to the exterior wall 14.

[0032] Then, stud insulation (not shown) is attached to the stud 6, and stud insulation 21 is attached to the stud 7. The stud insulation 21 is attached to the stud 7 after the exterior wall 14 is installed. After the stud insulation 21 is attached to the stud 7, the interior wall 22 is installed from the interior side 12. The interior wall 22 is, for example, an interior wall panel. The interior wall panel has a structure in which a facing material is attached to the interior side 12 of the frame portion 22a (Figure 2).

[0033] Then, interior wall mounting members 23, such as wooden bricks, are installed inside the studs 6 and 7. In addition, another interior wall mounting member 24 is installed on the underside of the ceiling beam 5. The interior wall 22 is fixed from the interior side 12 with fasteners 25, such as screws, to the interior wall mounting members 23 and 24 and the floorboard 4b, etc., by the frame portion 22a of the interior wall panel and the fixing members 22b and 22c attached to the frame portion 22a.

[0034] In this case, additional insulation materials 26, 27 (see comparative example in Figure 15) are appropriately installed on the inside of the interior wall 22 and between the interior wall 22 and the interior side surface 3b of the column 3. The stud insulation material 21 and the additional insulation materials 26, 27 are hidden from view by the interior wall 22. Note that in Figure 15, an additional insulation material 28, as described later, is used instead of the stud insulation material 21.

[0035] The stud insulation material 21 in this embodiment is shown, for example, in the cross-sectional view of Figure 4. The stud insulation material 21 is a component that is installed on the corner stud 7 to insulate the stud 7.

[0036] Specifically, the column 3 and the L-shaped stud 7, which has a horizontal surface 17 and a vertical surface 18, are arranged adjacent to each other with the horizontal surface 17 of the stud 7 facing the side surface 3a of the column 3. The vertical surface 18 of the stud 7 is provided with an inward-facing lip portion 19. The stud insulation material 21 then closes the opening 16 formed between the side surface 3a of the column 3 and the inward-facing lip portion 19 provided on the vertical surface 18 of the stud 7.

[0037] The stud insulation material 21 is installed in the corner studs 7 where there are no interior wall mounting members 23 such as wooden bricks attached, sealing that part of the opening 16 without any gaps. The stud insulation material 21 is installed so that its upper and lower ends abut against the floor beams 4, ceiling beams 5, or interior wall mounting members 23. The amount of stud insulation material 21 installed is in proportion to the number of interior wall mounting members 23.

[0038] For example, as shown in Figure 2, if four interior wall mounting members 23 are attached to the corner stud 7 with spacing in the vertical Z direction, then a total of five stud insulation materials 21 are installed above and below the interior wall mounting members 23.

[0039] Furthermore, to improve insulation performance, it is preferable to install fewer long interior wall mounting members 23. Also, having fewer interior wall mounting members 23 is preferable in terms of reducing labor and costs.

[0040] For example, if three interior wall mounting members 23 are attached to a corner stud 7 with spacing in the vertical Z direction, then four stud insulation materials 21 are installed above and below the interior wall mounting members 23. For example, if two interior wall mounting members 23 are attached to a corner stud 7 with spacing in the vertical Z direction, then three stud insulation materials 21 are installed above and below the interior wall mounting members 23. For example, if one interior wall mounting member 23 is attached to a corner stud 7 with spacing in the vertical Z direction, then two stud insulation materials 21 are installed above and below the interior wall mounting member 23.

[0041] In addition to the above configuration, this embodiment may also have the following configuration.

[0042] (1) As shown in Figure 4, the insulation material 21 for the studs is An insulating material body 31 made of organic material that can be inserted into the inside of the stud 7 from the opening 16, The insulation material may also have a holding part 32 that holds the main body 31 in the opening 16. The retaining portion 32 may have a crimping portion 33 that is crimped by the side surface 3a or lip portion 19 of the column 3 when it enters the opening 16. The insulation material body 31 may have a backing portion 34 that abuts against the side surface portion 17 in the portion that is inserted into the inside of the opening 16.

[0043] Here, the organic material is, for example, an organic material such as polystyrene or polyurethane. The organic material is foamed with a foaming agent to create insulating bubbles inside, such as expanded polystyrene or expanded polyurethane. As a result, the insulating material body 31 of the organic material becomes a solid foam. It is preferable for the bubbles in the foam to be independent of each other in order to improve the insulating properties.

[0044] Organic insulation materials offer high thermal insulation, are lightweight, have a soft surface, and possess shape retention (shape control), making them easy to handle and use. Furthermore, while organic insulation materials deform only slightly, their softness and elasticity allow for slight elastic deformation of the surface while maintaining a consistent shape, enabling them to recover their shape after deformation. Such organic insulation materials differ in characteristics from inorganic materials like glass wool, as shown in the comparative example in Figure 15, which are easily deformable and lack shape retention.

[0045] The area inside the opening 16 is the part that is further back from the opening 16 (towards the exterior wall 14), and becomes the interior space of the stud 7.

[0046] The insulation material body 31 is the main part of the stud insulation material 21, and extends vertically Z along the stud 7 to close the opening 16. The insulation material body 31 has a portion that is inserted into the inside of the opening 16 (insertion portion 31a) and a portion that extends outside the opening 16 (projection portion 31b). The insulation material body 31 has a nearly uniform cross-section along its entire length.

[0047] The insertion portion 31a of the insulation material body 31 will exhibit thermal insulation properties if it is inserted even slightly into the inside of the opening 16 and completely seals the opening 16 without any gaps.

[0048] The protruding portion 31b of the insulation material body 31 is designed to extend slightly outward from the opening 16. In this embodiment, the protruding portion 31b protrudes outward to the extent that it is almost flush with the interior surface 3b of the column 3.

[0049] In its installed state, the insulation material body 31 has a portion with a width w2 that is approximately equal to or slightly wider than the width w1 of the opening 16, at least at the location of the opening 16. This portion functions as a retaining portion 32. With this portion (retaining portion 32), the insulation material body 31 can completely seal the opening 16 without any gaps.

[0050] The holding portion 32 is integrally provided with the insulation material body 31 and is a part that holds the insulation material body 31 to the stud 7. The insulation material body 31 is directly held (self-held) to the stud 7 by the holding force of the holding portion 32. The holding portion 32 is positioned around the opening 16 while the insulation material body 31 is held to the stud 7.

[0051] The crimping portion 33 is a part (holding portion 32) that generates holding force by utilizing the shape recovery force against elastic deformation of the insulation material body 31, which is made of an organic material, to press and fix (crimp and fix) the insulation material body 31 to the opening 16.

[0052] The crimping portion 33 is inserted into the opening 16 from the interior side 12 by bending or compressing it within the range of elastic deformation, and the shape-recovering force of that portion returning to its original state causes the insulation material body 31 to be pressed and held in place in the opening 16. For this purpose, the width w2 of the crimping portion 33 is formed to be larger than the width w1 of the opening 16 (width w2 > width w1) to the extent that the required clamping force can be obtained within the range of elastic deformation. The width w2 is set to a dimension that allows the crimping portion 33 to be pushed into or pass through the opening 16 by elastic deformation.

[0053] The crimping portion 33 is formed on the insulation material body 31 such that, when viewed in plan, its width w2 is at least partially wider than the width w1 of the opening 16, so that it is crimped by the lip portion 19 and the side surface 3a of the column 3 when it enters the opening 16. The crimping portion 33 is provided on one or both of the surface 31c (first side surface) on the lip portion 19 side of the insulation material body 31, or the surface 31d (second side surface) on the column 3 side. The crimping portion 33 may also be formed using the width w2 of the insulation material body 31 itself, for example. In this case, the crimping portion 33 will be planar (planar crimping portion).

[0054] Specifically, the insulation material body 31 in Figure 4 is provided with the crimped portion 33 described above on at least a part of the surface 31c on the side of the lip portion 19.

[0055] Specifically, the insulation material body 31 first has its side surface 31d facing the column 3 positioned approximately parallel to the side surface 3a of the column 3. This makes the side surface 31d facing the column 3 a guide surface, allowing the insulation material body 31 to be inserted linearly from the opening 16 into the interior of the stud 7 along the side surface 3a of the column 3 (insertion direction 36). The insertion direction 36 is approximately perpendicular to the opening 16.

[0056] Furthermore, the insulation material body 31 has at least a part or all of the surface 31c on the lip portion 19 side as a surface that is not parallel to the side surface 3a of the column 3. In this case, when installed, the surface 31c on the lip portion 19 side has a crimped portion 33 (planar crimped portion) with a width w2 that is greater than the width w1 of the opening 16, in the area surrounding the lip portion 19 (near the boundary between the insertion portion 31a and the protruding portion 31b) (width w2 > width w1). As a result, the above-mentioned surface 31c has a crimped portion 33 in the area with a width w2, at least around the lip portion 19.

[0057] The side surface 31c of the lip portion 19 may be shaped in any way other than the above (as long as the insulation material body 31 can be attached to and held in the opening 16 of the stud 7).

[0058] In this embodiment, the insulation material body 31 has a front end portion 31e in the insertion direction 36 into the opening 16 that is narrower than the width w1 of the opening 16, and a rear end portion 31f that is wider than the width w1 of the opening 16.

[0059] Furthermore, the side surface 31c of the lip portion 19 is a tapered surface that gives the insulation material body 31 a tapered shape. This tapered surface is a straight, flat inclined surface. As a result, the insulation material body 31 becomes wedge-shaped, and the tapered surface functions as a wedge surface. The tapered surface (surface 31c) has a crimping portion 33 for the lip portion 19 at the middle in the insertion direction 36, an introduction taper 37 for the opening 16 at the tip insertion portion 31a, and a wedge surface that continues from the crimping portion 33 at the rear protruding portion 31b.

[0060] Furthermore, the insulation material body 31 may have a chamfered corner portion 31g or the like appropriately formed on one or both sides of the tip portion 31e to guide insertion into the opening 16. The chamfered corner portion 31g is formed to reduce the flat portion of the tip portion 31e of the insulation material body 31. Since the amount of insertion of the insertion portion 31a into the opening 16 of the insulation material body 31 is small, the chamfered corner portion 31g will have a gentle slope.

[0061] The backing portion 34 is the part that extends integrally from the tip 31e in the insertion direction 36 of the insulation material body 31 toward the side surface 17 of the stud 7. The backing portion 34 may be narrower than the tip 31e of the insulation material body 31.

[0062] The backing portion 34 restricts the amount of insulation material body 31 inserted into the stud 7 by having its tip surface abut against the back surface (inner surface of the side surface portion 17) of the stud 7. The backing portion 34 is formed to a length that abuts against the back surface of the stud 7 when the holding portion 32 (crimping portion 33) is held in the opening 16 of the stud 7. That is, the backing portion 34 is formed to a length that is approximately equal to the distance from the tip portion 31e of the insertion portion 31a to the inner surface of the side surface portion 17 of the insulation material body 31 when it is attached to the stud 7. The backing portion 34 has a nearly flat surface so that its tip surface makes stable surface contact with the back surface of the stud 7. The tip of the backing portion 34 may also be pierced through the rivet 15.

[0063] The backing portions 34 can be provided at any position and in any number of locations relative to the leading edge 31e of the insulation material body 31. For example, by providing two backing portions 34, the insulation material body 31 can be stably maintained in a position approximately parallel to the stud 7. In this embodiment, as shown in Figure 5B, the two backing portions 34 are provided at or near both ends of the insulation material body 31 in the longitudinal direction.

[0064] Figures 5A to 9B show modified examples of the stud insulation material 21 according to this embodiment, which have the same configuration as this embodiment and provide the same effects.

[0065] Figures 5A and 5B show a first modified example in which the crimping portion 33, which serves as the retaining portion 32, is made into a protruding shape (protruding crimping portion 33a). The protruding crimping portion 33a is provided in place of or together with the planar crimping portion described above. The protruding crimping portion 33a can be, for example, spherical or cylindrical. The protruding crimping portion 33a is provided in the area surrounding the lip portion 19 when installed.

[0066] Furthermore, the protruding crimping portion 33a can function as a locking portion in addition to, or in place of, the function of the crimping portion 33 (protruding locking portion). The protruding locking portion becomes the holding portion 32.

[0067] Specifically, the main body of the insulation material 31 has a protruding crimping portion 33a on the side surface 31c of the lip portion 19.

[0068] In this case, the side 31d of the insulation material body 31 facing the column 3 is a surface (guide surface) that is almost parallel to the side surface 3a of the column 3.

[0069] The surface 31c on the lip portion 19, including almost the entire side on the insertion portion 31a side and a portion on the tip side of the protruding portion 31b, is made substantially parallel to surface 31d, serving as a guide surface for the lip portion 19. This guide surface portion is made to be approximately the same width as the width w1 of the opening 16 (it may be slightly narrower or wider within an acceptable margin of error). The guide surface portion may also be made slightly wider than the width w1 of the opening 16 to serve as a crimping portion 33 (planar crimping portion) for the lip portion 19. The remaining portion at the rear end of the protruding portion 31b is made into a reverse tapered surface T that narrows towards the rear.

[0070] The crimping portion 33a is mainly provided on the insertion portion 31a. The crimping portion 33a is provided to a size that is approximately the same as, or slightly larger than, the insertion amount of the insertion portion 31a relative to the opening 16.

[0071] The protruding crimping portion 33a protrudes to approximately half the length of the lip portion 19, or more. The protruding crimping portion 33a is elastically deformed and crimped as it passes through the opening 16. When almost the entire protruding crimping portion 33a is inserted inside the stud 7, its base catches on the lip portion 19 in the insertion direction 36, preventing it from coming loose. Furthermore, if a portion of the protruding crimping portion 33a remains deformed by the lip portion 19, it becomes crimped and fixed to the opening 16.

[0072] The protruding crimping portion 33a may be provided continuously or discontinuously along the entire length of the thermal insulation material body 31 in the longitudinal direction (vertical direction Z). In this embodiment, the protruding crimping portion 33a is provided in two locations in the longitudinal direction (vertical direction Z) at approximately the same positions as the backing portion 34. The rest of the embodiment is substantially the same as the above embodiment.

[0073] Figures 6A and 6B show a second modified example. The protruding crimping portion 33a is formed to be larger in the insertion direction 36 than the insertion amount of the insertion portion 31a into the opening 16, with a portion (approximately 1 / 4) protruding to the outside of the stud 7. The protruding crimping portion 33a is reliably compressed and deformed at the lip portion 19, and the insulation material body 31 is crimped and fixed to the opening 16. Otherwise, it is almost the same as the first modified example described above.

[0074] Figures 7A and 7B show a third modified example. The protruding crimping portion 33a is formed to be larger in the insertion direction 36 than the insertion amount of the insertion portion 31a into the opening 16, with approximately half of it protruding outside the stud 7. The top of the protruding crimping portion 33a is compressed and deformed more significantly at the lip portion 19, and the insulation material body 31 is crimped and fixed to the opening 16. Otherwise, it is almost the same as the first and second modified examples described above.

[0075] In summary, the first to third modified examples are almost identical except for having protruding crimping portions 33a of different sizes.

[0076] Figures 8A and 8B show a fourth modified example in which the retaining portion 32 is provided with multiple types of crimping portions 33. The crimping portion 33 has both the planar crimping portion and the projection crimping portion 33b described above. The projection crimping portion 33b can be, for example, spherical or cylindrical. The projection crimping portion 33b is provided in the area surrounding the opening 16.

[0077] Specifically, the insulation material body 31 has crimping portions 33 on both the surface 31c on the lip portion 19 side and the surface 31d on the column 3 side.

[0078] In this case, the side 31d of the insulation material body 31 facing the column 3 is a surface (guide surface) that is almost parallel to the side surface 3a of the column 3. The protruding crimping portion 33b is provided on the side surface 31d facing the column 3. Similar to the second modified example, the protruding crimping portion 33b is mainly provided on the insertion portion 31a and is formed to be slightly larger in the insertion direction 36 than the amount of insertion of the insertion portion 31a into the opening 16, so that a part of it protrudes to the outside of the stud 7. The top of the protruding crimping portion 33b is crimped by the side surface 3a of the column 3.

[0079] The protruding crimping portions 33b are provided in two locations on the thermal insulation material body 31, at approximately the same positions as the backing portion 34 in the longitudinal direction. The rest of the material is substantially the same as in the above embodiment.

[0080] Furthermore, the side surface 31c of the lip portion 19 is tapered, with a wedge-shaped surface that forms an introduction taper 37 and a crimping portion 33, similar to the embodiment described above, for almost the entire insertion portion 31a and a part of the tip side of the protruding portion 31b. The wedge-shaped surface has a width w2 that is wider than the width w1 of the opening 16 at the rear end side of the lip portion 19.

[0081] The middle portion of the projection 31b is a surface that is approximately parallel to or nearly parallel to the surface 31d, or a slightly tapered inclined surface. This portion has a width approximately equal to the maximum width of the tapered surface. The remaining portion of the projection 31b at the rear end is a reverse tapered surface T that narrows towards the rear.

[0082] Figures 9A and 9B show a fifth modified example, in which the protruding crimping portion 33b on the side surface 31d of the column 3 is formed to be larger in the insertion direction 36 than the insertion amount of the insertion portion 31a into the opening 16, so that approximately half of it protrudes outside the intermediate column 7. The top of the protruding crimping portion 33b is crimped by the side surface 3a of the column 3. Otherwise, it is almost the same as the fourth modified example described above.

[0083] To summarize the above, the fourth and fifth modified examples are almost identical except that the surface 31c on the lip portion 19 is a planar crimping portion, and they have protruding crimping portions 33b of different sizes on the surface 31d on the column 3. Furthermore, they are almost identical to the above embodiment and other modified examples.

[0084] <Effect> The effect of this embodiment is as follows:

[0085] For example, in building unit 2, the exterior wall 14 is attached to the studs 7 installed between the floor beam 4 and the ceiling beam 5 by rivets 15 from the interior side 12. Also, interior wall mounting members 23, such as wooden bricks, are attached to the studs 7 from the interior side 12. Then, for example, as in the comparative example in Figure 11, insulation material 26 is attached to the inside of the exterior wall 14 from the interior side 12 so as to cover the exterior wall 14. This insulation material 26 may be an inorganic material such as glass wool or an organic material. Also, column insulation material 27 is attached to the interior side 12 surface 3b of the column 3 from the interior side 12. And, as shown in Figure 4, stud insulation material 21 is also attached to the opening 16 of the studs 7 from the interior side 12.

[0086] In the comparative example, the insulation material 28 for the studs is an inorganic material such as glass wool, similar to the insulation material 26. In this case, the insulation material 28 is elongated along the studs 7 and is installed by deforming it to fit into the opening 16 and pushing it into the inside of the studs 7.

[0087] However, when a deformable and shapeless insulation material 28, such as glass wool, is installed inside the studs 7, gaps are easily created between the opening 16 and the insulation material 28, especially due to deformation caused by gravity. This leads to a decrease in thermal performance as air enters and exits the studs 7 through these gaps. To address this, glass wool larger than the volume inside the studs 7 is packed in to prevent gaps from forming. However, using larger glass wool increases the time and effort required to insert it into the studs 7, reducing productivity. Furthermore, using larger glass wool also increases the cost of the material.

[0088] Therefore, in order to prevent the decrease in thermal insulation performance caused by gaps due to deformation of the glass wool as described above, and the decrease in productivity in the work of inserting larger glass wool, the use of stud insulation material 21 made of organic materials such as polystyrene or polyurethane is being considered. Stud insulation material 21 made of organic materials has shape retention properties and maintains a stable and constant shape over a long period of time, so gaps due to deformation are less likely to occur, and installation on the studs 7 is also easier than with glass wool, as it only needs to seal the openings 16.

[0089] When the stud insulation 21 is made of organic material, a means of holding the stud insulation 21 to the stud 7 is required. For example, if the stud insulation 21 is attached to the stud 7 with adhesive tape, the installation is relatively easy, but with adhesive tape, it is difficult to keep the stud insulation 21 in the same position for a long period of time, such as the lifespan of the building 1.

[0090] Therefore, in this embodiment, the stud insulation material 21 has a holding portion 32 integrally provided on the insulation material body 31. The holding portion 32 is made into a crimping portion 33, and the stud insulation material 21 is crimped and fixed to the opening 16 of the stud 7 with the crimping portion 33. In this case, because the stud 7 has a lip portion 19, the crimping portion 33 is crimped and fixed more strongly to the opening 16. As a result, the stud insulation material 21 can be self-held to the opening 16 of the stud 7 by the crimping portion 33 alone.

[0091] For example, with respect to a stud 7 on which an interior wall mounting member 23 is provided, the stud insulation material 21 is divided into upper and lower sections of the interior wall mounting member 23, and each stud insulation material 21 is attached separately between the interior wall mounting members 23 on the stud 7, or above and below the interior wall mounting members 23.

[0092] Then, the stud insulation material 21 is inserted into the stud 7 from the interior side 12 through the opening 16 with the insertion portion 31a of the insulation material body 31, until the backing portion 34 abuts against the back surface of the stud 7. At this time, the crimping portion 33, which serves as the holding portion 32, is crimped and fixed to the side surface 3a of the column 3 or the lip portion 19 of the stud 7, which are around the opening 16 of the stud 7. In this way, the stud insulation material 21 is attached to the stud 7 without any gaps.

[0093] Furthermore, since the crimped portion 33 of the insulation material body 31 is crimped and fixed to the opening 16, it becomes difficult for it to return to the interior side 12 along the side 3a of the column 3, thus preventing the insulation material body 31 from naturally falling out of the opening 16.

[0094] As a result, the stud insulation material 21 can be self-secured to the stud 7 by the crimped portion 33 without relying on support from the interior wall mounting member 23 or other means. Furthermore, the stud insulation material 21 does not require any other means of holding it in place, such as adhesive tape. The stud insulation material 21 has a simple shape with a nearly uniform cross-section.

[0095] Since it does not rely on the interior wall mounting member 23, the insulation material body 31 does not have any particular problems with the dimensional accuracy or positional accuracy of the crimped portion 33. Furthermore, even though the insulation material body 31 has a crimped portion 33, the cross-section is almost uniform along its entire length, so there are no particular concerns regarding strength.

[0096] <Effects> The effects of this embodiment are as follows:

[0097] The stud insulation material 21 may be made of an organic material and have an insulation material body 31 that can be inserted into the inside of the stud 7 from the opening 16, and a holding part 32 that holds the insulation material body 31 in the opening 16. Because the stud insulation material 21 is made of an organic material, it is a component that can maintain a certain shape, so it is possible to prevent a decrease in insulation performance caused by gaps due to deformation of the insulation material body 31. Because the stud insulation material 21 made of an organic material has a stable shape, it is easy to transport. The stud insulation material 21 made of an organic material has high insulation performance, good productivity, and is a component that can be easily reduced in cost. In addition, since the stud insulation material 21 has a structure in which the insulation material body 31 has a holding part 32, the shape is relatively simple. Therefore, the stud insulation material 21 is easy to transport and space-efficient during transport, and a large amount can be transported in a small space. Also, as described above, the corner studs 7 are attached to the building unit 2 in a state that is relatively weak against twisting compared to the intermediate studs 6. Therefore, there is a need to attach the insulation material body 31 without applying too much twisting force to the studs 7. To that end, as in this embodiment, by integrally providing a holding part 32 to the insulation material body 31 and devising the shape and structure of the holding part 32, it becomes possible to attach the insulation material body 31 to the studs 7 without twisting them too much.

[0098] (Effect 1) The retaining portion 32 may have a crimping portion 33 that is crimped by the side surface 3a or lip portion 19 of the column 3 when it enters the opening 16.

[0099] The insulation material body 31 can be easily attached to the opening 16 simply by pushing it straight into the opening 16 and crimping the crimping portion 33 into the opening 16. As a result, the insulation material body 31 is inserted linearly and attached to the opening 16. Therefore, the insulation material body 31 can be attached to the opening 16 without applying much twisting force to the stud 7.

[0100] The holding portion 32 has a crimping portion 33, which, when it enters the opening 16, is elastically deformed by the side surface 3a of the column 3 or the lip portion 19 and crimped. As a result, the insulation material body 31 is crimped and fixed to the opening 16 by the crimping portion 33, making it difficult for it to fall out of the opening 16. Therefore, an insulation material 21 for studs suitable for L-shaped studs 7 with a lip portion 19 attached to at least one side (the side of the vertical surface portion 18) can be obtained.

[0101] Furthermore, the insulation material body 31 may have a backing portion 34 that abuts against the side surface portion 17 at the portion (insertion portion 31a) that is inserted into the inside of the opening 16. This ensures that when the insulation material body 31 is installed in the opening 16, the backing portion 34 abuts against the side surface portion 17, thereby restricting the amount of insertion into the stud 7, and thus ensuring that the insulation material body 31 is installed in the correct position. [Examples]

[0102] Figures 10 to 14 are explanatory diagrams of this embodiment.

[0103] <Configuration> The configuration of this embodiment is as follows:

[0104] The column 3 and the L-shaped stud 7, which has a horizontal surface 17 and a vertical surface 18, are arranged adjacent to each other with the horizontal surface 17 of the stud 7 facing the side surface 3a of the column 3. The stud 7 has an inward-facing lip portion 19 on its vertical surface 18. The stud insulation material 21 closes the opening 16 formed between the side surface 3a of the column 3 and the inward-facing lip portion 19 provided on the vertical surface 18 of the stud 7. These are the same as in the above embodiment, and the same effects can be obtained.

[0105] Furthermore, the same features as in the above embodiment include an insulating material body 31 made of an organic material that can be inserted into the inside of the stud 7 from the opening 16, and a holding part 32 that holds the insulating material body 31 in the opening 16, and the same effects can be obtained.

[0106] This embodiment may have the following configuration:

[0107] (2-1) As shown in Figure 10, the insulation material 21 for the studs is Furthermore, the retaining portion 32 may have a wide portion 41 with a width w3 wider than the opening 16, and a recess 42 formed in the wide portion 41 that fits into and is held by the lip portion 19.

[0108] The width w3 is the dimension of the widest part of the insulation material body 31 in a direction approximately parallel to the side surface 17 of the stud 7. Preferably, the width w3 is such that the insulation material body 31 cannot pass through the opening 16 due to elastic deformation.

[0109] The wide portion 41 is formed over substantially the entire cross-section of the insulation material body 31, or at least the portion of the insulation material body 31 that is held by at least the opening 16. The portion of the insulation material body 31 that is held by at least the opening 16 is the peripheral portion of the lip portion 19 (or the portions on both sides of the recess 42). The wide portion 41 is formed to be at least large enough so that the insulation material body 31 is not damaged when it is attached to the opening 16.

[0110] The wide portion 41 has a width w3 that is wider than the width w1 of the opening 16, at least on the side of the insertion portion 31a, and narrower than the distance from the side 3a of the column 3 to the vertical portion 18. The wide portion 41 is formed to have a width wider than the width w1 of the opening 16 on the side of the protruding portion 31b. The wide portion 41 extends continuously over almost the entire area in the vertical direction Z of the insulation material body 31.

[0111] The recess 42 is a groove formed in a direction substantially parallel to the lateral surface 17 when the insulation material is installed in the opening 16. The recess 42 extends continuously over almost the entire area in the vertical direction Z of the insulation material body 31.

[0112] The recess 42 has a groove depth that is approximately equal to or slightly larger or smaller than the length of the lip portion 19, and a groove width that is approximately equal to or slightly wider than the thickness of the lip portion 19. "Approximately equal" allows for a slight margin of error. In this embodiment, the groove width of the recess 42 is approximately 2 to 3 times the thickness of the lip portion 19.

[0113] The wide portion 41 and the recess 42 are formed on the side surface 31c of the lip portion 19 of the insulation material body 31.

[0114] In this case, the surface 31c on the lip portion 19 is substantially parallel to surface 31d for almost the entire insertion portion 31a side and for a portion of the tip side of the protruding portion 31b. This substantially parallel surface portion forms a wide portion 41. The wide portion 41 has approximately the same protruding width for the insertion portion 31a side of the recess 42 and the protruding portion 31b side of the recess 42. The remaining portion on the rear end side of the protruding portion 31b forms a reverse tapered surface T that narrows towards the rear.

[0115] Furthermore, the surface 31d of the insulation material body 31 on the side facing the column 3 is a surface (contact and locking surface) that is almost parallel to the side surface 3a of the column 3. The surface 31d of the insulation material body 31 is in contact with the side surface 3a of the column 3.

[0116] Then, as shown by the dashed line in Figure 11A, the insulation material body 31 is set diagonally when installed, with the recess 42 of the lip portion 19 aligned with the opening 16 of the stud 7. Then, by rotating the insulation material body 31 toward the column 3 with the lip portion 19 (and recess 42) as the approximate center (rotation direction 43 in Figure 10), the insulation material body 31 is installed in the opening 16. The movement in the rotation direction 43 of the insulation material body 31 is stopped when the surface 31d of the insulation material body 31 comes into contact with the side surface 3a of the column 3.

[0117] (2-2) As shown in Figure 10, the insulation material body 31 is At least the portion inserted into the opening 16 may have interference-reducing notches 45a, 45b to reduce interference with the side surface 3a of the column 3 when installed.

[0118] The notches 45a and 45b are provided at least at the corner portion of the insertion portion 31a of the insulation material body 31, between the surface of the tip portion 31e facing the side surface portion 17 of the stud 7 and the surface 31d in contact with the side surface 3a of the column 3. Preferably, the notches 45a and 45b are of a size such that when the insulation material body 31 is fitted into the opening 16 while being rotated and displaced as described above, the corner portion is slightly elastically deformed by the side surface 3a of the column 3.

[0119] The notches 45a and 45b may be cut in an arc shape or in a straight line. If they are cut in a straight line, the notches 45a and 45b may be cut on a single flat surface or on multiple surfaces so that the corners are polygonal. In this embodiment, the notches 45a and 45b are cut on two surfaces.

[0120] The notches 45a and 45b are formed by cutting out all or part of the portion that interferes with the side surface 3a of the column 3 when the insulation material body 31 is attached to the opening 16 of the stud 7 while being moved in the rotational direction 43. As a result, the angles of the notches 45a and 45b with respect to the tip 31e tend to be larger than those of the chamfered corner 31g in Figure 4. For example, the chamfered corner 31g in Figure 4 has a relatively gentle slope that is well less than 45 degrees with respect to the tip 31e, whereas the notches 45a and 45b in this embodiment are larger overall. In particular, the notch 45a has a relatively steep slope of about 40 to 45 degrees or more with respect to the tip 31e.

[0121] The size of the notches 45a and 45b relative to the width of the opening 16, and the length of the notches 45a and 45b along the side surface 3a of the column 3, are set appropriately according to the amount that the insertion portion 31a is inserted into the opening 16. The above size and length tend to increase as the insertion amount of the insertion portion 31a increases. The notches 45a and 45b may also be sized to extend outside the opening 16 (to the protruding portion 31b).

[0122] If the insulation material body 31 is made of an organic material, the insulation material body 31 can be elastically deformed, so the notches 45a and 45b are not necessarily required, but they may be provided.

[0123] Furthermore, the insulation material body 31 may be appropriately provided with a chamfered corner portion 31g, similar to that in Embodiment 1, to make it easier to visually confirm that the recessed portion 42 of the lip portion 19 is aligned with the corner portion on the side of the vertical surface portion 18 of the stud 7 in the insertion portion 31a. However, in this embodiment, since the insulation material body 31 is not inserted linearly into the opening 16 along the insertion direction 36, the chamfered corner portion 31g does not function as an insertion guide.

[0124] Figures 11A to 13B show modified examples of the stud insulation material 21 according to this embodiment, which have a configuration almost identical to that of this embodiment and provide similar effects.

[0125] Figures 11A and 11B show a first modified example of this embodiment, in which there are no notches 45a and 45b at the corners. Also, the wide portion 41 formed on the side surface 31c of the lip portion 19 of the insulation material body 31 has different widths on both sides of the recess 42, and has a stepped shape. That is, the wide portion 41 on the insertion portion 31a side of the recess 42 has a slightly larger protruding width than the protruding portion 31b side of the recess 42. The rest of the embodiment is substantially the same as described above.

[0126] Figures 12A and 12B show a second modification of this embodiment, in which a notch 45a is provided at the corner of the insertion portion 31a. The parts other than those mentioned above are substantially the same as the above embodiment and modification.

[0127] Figures 13A and 13B show a third modification of this embodiment, in which the insertion portion 31a has a larger notch 45a at its corner than the second modification. The length of the notch 45a in the third modification along the side surface 3a of the column 3 is about twice the length of the notch 45a in the second modification. The rest of the embodiment is substantially the same as the above embodiment and its modifications.

[0128] Furthermore, as shown in the fourth modified example in Figure 14, the stud insulation material 21 can have the side surface 31c of the lip portion 19 made into a straight inverted tapered surface T over almost the entire area including the wide portion 41. This simplifies the cross-sectional shape of the stud insulation material 21, and for example, by inverting it upside down and joining the inverted tapered surfaces T together, the gap at the joint is reduced, improving space efficiency during transportation and allowing for the transportation of larger quantities at once.

[0129] <Effect> The effect of this embodiment is as follows:

[0130] In this embodiment, the holding portion 32 is made into a wide portion 41 and a recess 42, and the insulation material 21 for the studs is held in place by fitting the recess 42 of the wide portion 41 into the lip portion 19 of the opening 16 of the stud 7.

[0131] For example, with respect to a stud 7 on which an interior wall mounting member 23 is provided, the stud insulation material 21 is divided into upper and lower sections of the interior wall mounting member 23, and each stud insulation material 21 is attached separately between the interior wall mounting members 23 on the stud 7, or above and below the interior wall mounting members 23.

[0132] In this embodiment of the stud insulation material 21, the insulation material body 31 is set with the lip portion 19 and the recess 42 aligned so that the recess 42 of the holding portion 32 catches on the lip portion 19 with respect to the opening 16. From this state, the insulation material body 31 is rotated (rotation direction 43) toward the column 3 (side surface 3a) around the lip portion 19 (and recess 42). As a result, the insulation material body 31 is inserted into the opening 16 and finally attached to the opening 16. At this time, by rotating the insulation material body 31 around the lip portion 19, the recess 42 becomes oriented in the same direction as the lip portion 19 and fits into the lip portion 19, so that the insulation material body 31 can be attached to the opening 16 without applying much twisting force to the stud 7.

[0133] Furthermore, the insulation material body 31 is precisely positioned and fixed in place along the side surface 3a of the column 3 because the recess 42 fits into the lip portion 19, thus eliminating the need for the backing portion 34.

[0134] Furthermore, the insulation material body 31 is designed so that the wide portion 41 cannot pass through the opening 16 in a straight line due to elastic deformation. Therefore, the insulation material body 31 will not fall out of the opening 16 on its own.

[0135] As a result, the stud insulation material 21 can be self-secured to the stud 7 by its wide section 41 and recess 42, without relying on support from the interior wall mounting member 23 or other means. Furthermore, the stud insulation material 21 does not require any other means of holding it in place, such as adhesive tape. The stud insulation material 21 has a simple shape with a nearly uniform cross-section.

[0136] Since it does not rely on the interior wall mounting member 23, the insulation material body 31 does not have any particular problems with the dimensional accuracy or positional accuracy of the wide portion 41 and the recess 42. Furthermore, even though the insulation material body 31 has a wide portion 41 and a recess 42, the cross-section is almost uniform along its entire length, so there are no particular concerns regarding its strength.

[0137] <Effects> The effects of this embodiment are as follows:

[0138] (Effect 2-1) In the stud insulation material 21, the holding portion 32 may have a wide portion 41 with a width w3 wider than the opening 16, and a recess 42 formed in the wide portion 41 that fits into and is held by the lip portion 19.

[0139] Since the holding portion 32 has a wide portion 41 with a width w3 wider than the opening 16, the insulation material body 31 can be held in the opening 16 by the wide portion 41 of the holding portion 32.

[0140] In this case, since the holding portion 32 has a recess 42 in the wide portion 41, the wide portion 41 clamps and holds the lip portion 19 by fitting the recess 42 into the lip portion 19.

[0141] As a result, the retaining portion 32 fits snugly into the opening 16 and the lip portion 19, restricting movement in a direction nearly perpendicular to the opening 16, thus making it difficult for the insulation material body 31 to fall out of the opening 16. Therefore, an insulation material 21 for studs suitable for L-shaped studs 7 with a lip portion 19 attached to at least one side (the side of the vertical surface portion 18) can be obtained.

[0142] Furthermore, because the recess 42 fits into the lip portion 19, the recess 42 restricts the position of the insulation material body 31, eliminating the need to control the insertion amount of the insulation material body 31 into the stud 7. Therefore, the insulation material body 31 can be installed stably on the stud 7 without variation. Also, the backing portion 34 becomes unnecessary.

[0143] (Effect 2-2) In the stud insulation material 21, the insulation material body 31 may have interference-reducing notches 45a, 45b in at least the portion inserted into the inside of the opening 16 to reduce interference with the side surface 3a of the column 3 when installed.

[0144] Therefore, when rotating and inserting the insulation material body 31 into the opening 16, the portion of the insulation material body 31 that is inserted into the inside of the opening 16 is less likely to catch on the side surface 3a of the column 3 due to the notches 45a and 45b. As a result, the insulation material body 31 can be attached to the opening 16 relatively smoothly. In addition, the notches 45a and 45b also function as a stopper to prevent the insulation material body 31 from coming off the opening 16. [Explanation of symbols]

[0145] 3 pillars 3a side 7 bay pillars 16 Opening 17 Lateral section 18 Vertical section 19 Lip section 21. Insulation material for studs 31 Insulation material itself 31a Insertion part 32 Holding part 33 Crimping section 34 Backing 41 Wide section 42 recess 45a Notch 45b Notch w1 Width (opening) w2 Width (holding part) w3 Width (wide section)

Claims

1. A stud insulation material that closes an opening formed between the side surface of the column and an inward-facing lip portion provided on the vertical surface of the stud, by arranging a column and an L-shaped stud having a horizontal surface and a vertical surface adjacent to each other with the horizontal surface of the stud facing the side surface of the column, An insulating material body formed of an organic material, which can be inserted into the inside of the stud through the opening, It has a holding part that holds the main body of the insulation material in the opening, The retaining portion has a crimping portion that is crimped by the side surface or lip portion of the column when it enters the opening. The insulation material for studs is characterized in that the main body of the insulation material has a backing portion that abuts against the side surface portion in the portion that is inserted into the inside of the opening.

2. A stud insulation material that closes an opening formed between the side surface of the column and an inward-facing lip portion provided on the vertical surface of the stud, by arranging a column and an L-shaped stud having a horizontal surface and a vertical surface adjacent to each other with the horizontal surface of the stud facing the side surface of the column, An insulating material body formed of an organic material, which can be inserted into the inside of the stud through the opening, It has a holding part that holds the main body of the insulation material in the opening, The insulating material for studs is characterized in that the retaining portion has a wide portion having a width dimension wider than the opening, and a recess formed in the wide portion that is fitted and held in place by the lip portion.

3. The insulation material for studs according to claim 2, The insulation material for studs is characterized in that the main body of the insulation material has, at least, a notch for interference reduction in the portion inserted into the inside of the opening, which reduces interference with the side surface of the column when installed.

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