JP2000027329A - Thermal insulating material for steel house - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify work by forming of a foamed synthetic resin and providing a groove into which a shape steel is inserted and an engagement portion in the groove, in a thermal insulating material used for thin-walled lightweight shape steel such as lip channel steel or lightweight channel steel. SOLUTION: A thermal insulating material 20 that is nearly parallelepipedous and long in one direction and is made from a foamed synthetic resin, is formed, and a groove 21 open in one longitudinal direction of the thermal insulating material 20, is formed. And one side 21 a of this groove 21 is sloped slightly so that it may be narrower downward, and an engagement portion 22 is swollen below the groove 21. And then, the height of the engagement portion 22 in the groove width direction from the bottom is set at 1 to 10 mm, and in addition, the compression strength of the thermal insulating material 20 against a 5% distortion is set at 0.5 N/cm2 to 30 N/cm2. To mount the thermal insulation material 20 on lip channel steel as a floor joist 24, the opening 25 of the groove 21 of the thermal insulating material 20 is arranged on the floor joist 24, and the end 26 of the floor joist 24 is engaged with the engagement portion 22. Therefore, the thermal insulating material can be kept from dropping.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating material for a steel house, which is preferably used for a floor joist, in a steel house having a frame such as a column using a thin surface-treated steel sheet.

[0002]

2. Description of the Related Art Conventionally, as a structure of a building, a heavy steel method using an H-shaped steel or an I-shaped steel, and a lightweight steel method using a lip grooved steel or a light grooved steel have been known. In recent years, a steel house method using a lip channel steel or a light channel steel (hereinafter, simply referred to as “steel member”) having a thickness of about 1 mm, which is thinner than these two methods, has been used. I have.

[0003] The steel member used in this steel house construction method is lightweight, and is easy to join and work with, for example, a drill screw such as a 6 kaku, a thin washer, a flexible wafer, etc., and thus has excellent workability. In addition, since steel members can be standardized, they can be supplied in large quantities, so that they are inexpensive. In addition, compared to the conventional method, steel members are used not only for pillars, but also for studs, braces, etc., so that the use of wood resources can be minimized, and in addition, more joint hardware is used. As such, it has excellent structural strength and has been in the limelight for its excellent earthquake resistance, durability and flame retardancy.

[0004] In a building constructed by such a steel house construction method, it is required to exhibit sufficient strength but also to sufficiently satisfy heat insulation. FIG. 14 shows a framework of a floor portion and a heat insulating structure constructed by such a steel house construction method.

[0005] That is, a wooden base 2 is placed on a concrete cloth foundation 1, and steel floor joists 3 are arranged on the base 2 at predetermined intervals in the horizontal direction. on the other hand,
A lower frame runner 4 is extended over the upper surface of the end of the floor joist 3, and studs 5 are erected thereat at predetermined intervals.
Further, a planar structural plywood 6 is arranged on the side of the stud 5,
A plate-like heat insulating material 7 is attached to the side.

As shown in FIG. 15, the floor joists 3 and the studs 5 are formed of a lip channel steel having a shape in which the tip of a U-shape is bent inward, and the lower frame runner 4 is formed as shown in FIG. As shown in the figure, the section is formed from a light channel steel having a substantially U-shaped cross section.

A block-shaped heat insulating material 8 is arranged around the floor joist 3 and a plate heat insulating material 9 is inserted above the floor joist 3 to thereby insulate the floor surface. I have.
Reference numeral 10 denotes a structural plywood, reference numeral 11 denotes a moisture-proof airtight film, and reference numeral 12 denotes a finishing material.

[0008]

By the way, the block-shaped heat insulating material 8 is arranged around the floor joist 3 as described above, and in some cases, glass wool is wound around the floor joists 3 to provide heat insulation. However, if this part is not sufficiently insulated, there is a problem that a thermal bridge is generated and, for example, cool air from under the floor is transmitted to the indoor side.

Therefore, conventionally, a plate-like heat insulating material 8
In disposing, the plate-shaped heat insulating material 8 is divided into two, and the divided body is arranged so as to be sandwiched from both sides, or as shown in FIG. 14, a foamed resin molded body having a U-shaped cross section is prepared. These compacts are attached by fixing them with an adhesive or the like.

However, in such a mounting,
The work for sandwiching the divided body is complicated or requires an adhesive or the like, and the work is troublesome. The present invention has been made in view of such circumstances, and for example, in constructing a heat insulating structure around a lip channel steel or a light channel steel, work can be easily performed, and a sufficient heat insulating effect is exhibited. The purpose of the present invention is to provide a heat insulating material for a steel house that can be used.

[0011]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned objects and objects of the prior art. The heat insulating material for a steel house according to the present invention comprises a lip channel steel. Or a heat insulating material for a steel house used for thin-walled light section steel such as a light section steel section, which is formed of a foamed synthetic resin and has a groove for inserting the light section steel, and has a groove therein. In addition, a locking portion that comes into contact with the lightweight section steel is formed.

Further, the heat insulating material for a steel house according to the present invention is characterized in that the lip channel steel is used for a floor joist and is mounted on the steel floor joist. Further, in the present invention, the rising height H of the locking portion from the bottom in the groove width direction is 1 to 10 mm, preferably 2 to 6 mm.
It is characterized by being.

Furthermore, in the present invention, 5% compressive strength at strain 0.5N / cm ² ~30N / cm ² of the heat insulating material, preferably 1~20N / cm ^2, more preferably 2~15N
/ Cm ² .

According to the heat-insulating material for a steel house of the present invention configured as described above, the heat-insulating material has a sufficient strength and can be easily inserted into the groove of the lightweight section steel. In addition, since the locking portion comes into contact when the plug is inserted, the heat insulating material does not fall off.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a heat insulating material for a steel house according to one embodiment of the present invention.

The heat insulating material 20 made of the synthetic resin foam is
It has a substantially rectangular parallelepiped shape that is long in one direction, and has a groove 21 that is open on one surface over the length. The height (A) × width (B) × length (C) of the heat insulating material 20 is, for example,
235 × 140 × 900 mm and the depth D of the groove 21
Is, for example, 185 mm. The thickness (E) is 5m
m. On the other hand, one side 21a of the groove 21 is provided with a slight gradient so as to become narrower as approaching downward. As shown in FIG. 2 in an enlarged manner, a locking portion 22 is formed below the groove portion 21 so as to protrude, and a space below the locking portion 22 is formed slightly wider. The rising height H of the locking portion 22 from the bottom in the groove width direction is preferably in the range of 1 to 10 mm, and more preferably in the range of 2 to 6 mm. At this time, the distance S from the lower wall to the locking portion 22 is 2
It is about 0 mm.

As the heat insulating material 20, for example, foamed polyolefins such as foamed polypropylene and foamed polyethylene, foamed polystyrene, foamed urethane, foamed vinyl chloride, and the like can be used. In addition to these, any foamed resin can be used. The magnification is not particularly limited, but is preferably 20 to 80 times, preferably 30 to 60 times.

The compressive strength at 5% strain of such a thermal insulating material body is ^{0.5N / cm 2 ~30N / cm 2} , preferably 1~20N / cm ^2, more preferably 2~15N / cm
It is preferably ² . With such a compressive strength, a stable state can be maintained after mounting.

Here, as shown in FIG. 3, in order to attach the heat insulating material 20 according to the present embodiment to the lip channel steel used as the floor joist 24, for example, first, the groove 21 of the heat insulating material 20 is formed. The opening 25 may be arranged on the side of the floor joist 24 and lightly pushed in from this state. Then, the end 2 of the floor joist 24
6 gets over the locking portion 22 and is locked by the locking portion 22. This prevents the heat insulating material 20 from falling off. Further, as shown in FIG. 4 and FIG. 5, in the exposed portion above the floor joist 24 made of the lip channel steel,
Plate-shaped heat insulating materials 27, 27, and a moisture-proof film 28 are arranged,
The structural plywood 29 is disposed thereon and fixed with appropriate screws 30 to ensure heat insulation and airtightness, and prevent the occurrence of a thermal bridge.

This makes it possible to effectively insulate the area around the floor joist of the steel house. Also, the mounting workability is good, and there is no possibility of falling off. Such a heat insulating material 20 is not limited to the floor joist 24 but can be applied to any part such as a wall or a roof of a steel house.

The embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment. For example, in the above embodiment, the locking portion 22 continuously extending in the length direction is shown in the groove portion 21 of the heat insulating material. However, like the heat insulating material 31 shown in FIG. It is also possible to form the projections 32 and use these projections 32 as locking portions.

Also, as in the heat insulating material 33 shown in FIG.
It is also possible to provide a meat steal 34 on the side wall. When formed in this way, it has cushioning properties and can be suitably used for a bent portion or the like.

As shown in FIG. 8, as shown in FIG.
It can also be formed in a substantially T-shaped cross section. Thereby, one floor joist 24 between adjacent floor joists 24
Can be integrally covered with a single member. With such a configuration, it is possible to eliminate the trouble of arranging the plate-shaped heat insulating material 27 shown in FIGS. In this case, the end of the heat insulating material 35 is provided with a jig 3 having an appropriate shape.
6 is preferably formed. Thereby, the positioning of the heat insulators 35 is easy, and the formation of the gap can be prevented.

Also, as in the heat insulating material 37 shown in FIG.
By providing the jaw 38 at the end in the longitudinal direction, the positioning can be easily performed and the formation of a gap can be prevented even when joining in the longitudinal direction.

The locking portions 22 can be provided on both sides of the groove portion 21, for example, as in a heat insulating material 40 shown in FIG. Or, like the heat insulating material 41 shown in FIG.
The spire-shaped locking portion 42 may be used. In addition, 2
It can be provided in a step, and various modes are possible.

Further, in the steel house construction method, a portion where the steel members cross each other in a T shape or a cross shape is formed. In such a cross portion, for example, as shown in FIG. A heat insulating material 43 or a cross-shaped heat insulating material 44 as shown in FIG. 13 may be prepared and attached. In addition, the end portions of the heat insulating materials 43 and 44 can be provided with a jagged edge.

[0027]

As described above, according to the heat insulating material for a steel house according to the present invention, the heat insulating material can be easily mounted on the frame framed with the lip channel steel or the like, and the locking portion provided in the groove. Abuts on the frame, so that it can be prevented from falling off from the mounted state. Therefore, it is possible to save labor of work and to exert stable heat insulating properties.

The present invention can be effectively used as a heat insulating material for a floor, but can be applied to other places, for example, a wall or a roof. Furthermore, if the height of the locking portion formed on the heat insulating material main body from the bottom in the groove width direction is set to 1 to 10 mm, sufficient mounting properties can be obtained, and falling off can be prevented.

The compressive strength at 5% strain is 0.5 N /
If the density is in the range of cm ^{2 to} 30 N / cm ² , the heat insulating material has sufficient strength.

[Brief description of the drawings]

FIG. 1 is a perspective view of a heat insulating material for a steel house according to one embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a front view when the heat insulating material shown in FIG. 1 is attached to a floor joist;

FIG. 4 is a front view when a heat insulating material is further attached to the upper side from the state of FIG. 3;

FIG. 5 is a sectional view when the structural plywood or the like is attached from the state of FIG. 4;

FIG. 6 is a cutaway perspective view of a heat insulating material according to a second embodiment of the present invention.

FIG. 7 is a perspective view of a heat insulating material according to a third embodiment of the present invention.

FIG. 8 is a sectional view when a floor joist is insulated by using a heat insulating material according to a fourth embodiment of the present invention.

FIG. 9 is a cutaway perspective view of a butted portion of a heat insulating material according to a fifth embodiment of the present invention.

FIG. 10 is a side view of a heat insulating material according to a sixth embodiment of the present invention.

FIG. 11 is a side view of a heat insulating material according to a seventh embodiment of the present invention.

FIG. 12 is a perspective view of a heat insulating material according to an eighth embodiment of the present invention.

FIG. 13 is a perspective view of a heat insulating material according to a ninth embodiment of the present invention.

FIG. 14 is a perspective view of a shaft assembly of a lower floor portion by a steel house method in which a heat insulating structure is installed with a conventional heat insulating material.

FIG. 15 is a side view of a lip channel steel.

FIG. 16 is a side view of a light channel steel.

[Explanation of symbols]

 Reference Signs List 20 heat insulating material 21 groove 22 locking part

Claims (4)

[Claims] 1. A heat insulating material for a steel house used for a thin-walled lightweight section steel such as a lip channel section or a light section section steel, wherein the groove section for inserting the lightweight section steel is formed of a foamed synthetic resin. A heat insulating material for a steel house, wherein the heat insulating material is provided with a locking portion in contact with the lightweight section steel in the groove. 2. The heat insulating material for a steel house according to claim 1, wherein the lip channel steel is used for a floor joist part and is attached to the steel floor joist part. 3. The heat insulation for a steel house according to claim 1, wherein a rising height H of the locking portion formed on the heat insulating material main body from a bottom portion in a groove width direction is in a range of 1 to 10 mm. Wood. 4. A steel house for thermally insulating material, according to claim 1, the compressive strength at 5% strain of the heat insulating material is characterized by a ^{0.5N / cm 2 ~30N / cm 2} .