JPH1162039A - Heat insulation and airtight structure of combined beam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve heat insulation by forming a combined beam having a woody end member on the first and second horizontal surfaces of steel-frame member whose cross section is of roughly H shape, and fixing a heat insulating and airtight member at the recessed part of the combined beam. SOLUTION: A heat insulating and airtight member 12 which is provided with a projecting part 13 capable of being fitted into the recessed part 11 of a combined beam, and a fixing plate part 14 which can conduct jointing and fixing on the combined beam by supporting the projecting part 13 is disposed at the recessed part 11 of the combined beam. The fixing plate part 14 of the heat insulating and airtight member 12 has a roughly equivalent length to the distance between the surfaces of the woody end members 5 and 6 of the combined beam, and is provided with a fixing part 15 formed at end parts facing each other, and the projecting part 13 is formed between the fixing parts 15 of the fixing plate part 14. The projecting part 13 is fitted into the recessed part 11 of the combined beam, the fixing part 15 is disposed on the side surfaces of the woody end members 5, 6, and a fixing device 16 is driven into the woody end members 5, 6 from the fixing part 15 to fix the heat insulating and airtight member 12 on the combined beam. It is thus possible to provide heat insulation easily for the combined beam and ensure airtightness in the jointing part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
It is related to an airtight structure. More specifically, the present invention provides a heat insulating and air-tight structure of a composite beam that can provide heat insulation to a composite beam in which a steel frame material and a woody end piece are combined, and can easily ensure airtightness at a joint. It is about.

[0002]

2. Description of the Related Art Conventionally, in wooden buildings, columns, beams,
Wooden materials were used for bracing, etc., and these were framed to form a frame structure.However, in order to improve strength, stability, and durability, the use of steel frame materials was examined, A composite beam in which wood materials are combined has been proposed by the applicant of this application (Japanese Patent Application Laid-Open No. 8-13690).

This composite beam can be shown, for example, in FIG. 10. In the composite beam, first and second flat plate portions (1, 2) arranged opposite to each other have a third flat plate portion at a substantially central portion thereof. Wood-like scraps (5, 6) are disposed on the surface side of the first and second horizontal portions (1, 2) of the steel frame material (4) connected by (3) and having a substantially H-shaped cross section. ing. The strength, stability and durability required for the frame structure are enhanced by the steel frame material (4), and at the same time, the wood shavings (5, 6) enable the application of the conventional wooden shaft method.

[0004]

However, since the composite beam shown in FIG. 10 is provided with the steel frame (4), it is necessary to ensure heat insulation in the steel frame (4). . In addition, the joint of the composite beam, steel frame (4)
(7) provided at the end of the third flat plate (3)
And a connection jig (8) formed in a flat plate shape or an L-shape is arranged on the surface of the connection jig (8) and tightened with bolts and nuts (9). A gap (10) is inevitably formed. Therefore, in order to realize a so-called highly airtight house, formation of the gap (10) becomes a problem.

The above two points become particularly apparent in cold regions. Therefore, conventionally, in order to improve the heat insulating property and airtightness of the composite beam, a heat insulating material such as urethane is used for a steel frame material (4).
Are sprayed on the concave portion (11) formed by the first, second and third flat plate portions (1, 2, 3), or an airtight sheet is stuck around. Alternatively, a heat insulating material such as styrofoam or rock wool is fitted into the recess (11).

However, since all of these constructions are performed on site, the quality depends on the skill of the worker in any case, and it is inevitable that the quality varies, and the heat insulation and the heat insulating property are inevitable. There is a problem that airtightness does not appear uniformly. Further, in the case of spraying a heat insulating material such as urethane, a portion that does not adhere may occur or the expansion ratio may be non-uniform depending on the ambient temperature at the time of spraying. In addition, the spraying of the heat insulating material must be performed by a specialized trader, and there is an aspect that the cost increases. In the case of attaching an airtight sheet, the work is complicated and the workability is poor. In the case of inserting a heat insulating material such as a styrofoam or rock wool, various operations such as processing and mounting and fixing the heat insulating material are concentrated on a construction site, and the work is complicated. At the joint (7) of the composite beam, the connection jig (7) and the bolts and nuts (9) protrude from the surface of the third flat plate portion (3) of the steel frame material (4), so that workability is particularly poor. .

The present invention has been made in view of the above circumstances, and has solved the drawbacks of improving the heat insulation and airtightness of a conventional composite beam, and has combined steel frame materials and wood offcuts. It is an object of the present invention to provide a heat insulating and air-tight structure of a composite beam that can provide heat insulation to the composite beam and easily ensure airtightness at a joint.

[0008]

In order to solve the above-mentioned problems, the present invention is characterized in that first and second flat plate portions opposed to each other are connected by a third flat plate portion at a substantially central portion thereof. A thermally insulated and airtight structure of a composite beam in which a wooden piece is disposed on the surface side of first and second horizontal portions of a steel frame material having a substantially H-shaped cross section, wherein the first and second steel frame materials are provided. And the concave portion formed by the third flat plate portion can be fitted to the flat plate portion of the steel frame material except for the joint between the composite beams provided at the end of the third flat plate portion of the steel frame material. The enabled protrusion has a length substantially equal to the distance between the surfaces of the wood scraps, and has a heat insulating property protruding between the fixing portions of the fixing plate portion having the fixing portion at the opposite end. The protruding portion of the heat-insulating airtight member is fitted into the concave portion of the composite beam, and the fixing portion of the fixing plate portion is disposed on the side surface of the wood scrap, and Bonded to wood to provide insulation and airtight structure of the composite beam, characterized by securing the heat insulating airtight member to the composite beam.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a composite beam according to the present invention.
FIG. 1 is a perspective view of an essential part showing an embodiment of a heat insulating and airtight structure of a composite beam according to the present invention.

As shown in FIG. 1, in the heat insulating and airtight structure of a composite beam according to the present invention, a heat insulating and airtight member (12) having heat insulating properties is provided at the construction site on the concave portion (11) side of the composite beam. . As shown in FIG. 2, the heat-insulating airtight member (12) supports the protrusion (13) that can be fitted into the recess (11), and supports the protrusion (13) to be fixedly joined to the composite beam. Fixed plate portion (14).

At the joint (7) provided at the end of the third flat plate portion (3) of the steel frame member (4) by joining the composite beams, as described above, the connection jig shown in FIG. Tools (10), bolts and nuts (9) protrude from the surface of the third flat plate (3). To escape this, the projection (13)
Each flat part (1, 1) of the steel frame material (4) excluding the joint (7)
2, 3), so that the portion facing the joint (7) when fitted into the recess (11) is prevented from protruding.

The fixing plate (14) has a length substantially equal to the distance between the surfaces of the wood ends (5, 6) of the composite beam, and has a fixing portion (15) at the opposite end. Insulated airtight member (1
The joining and fixing to the composite beam of 2) is performed through this fixing portion (15). The protrusion (13) is
It protrudes between the fixing parts (15) of the fixing plate part (13).

The heat-insulating and airtight member (12) shown in FIG. 2 can be disposed at the corner formed by joining the composite beams, and the fixing plate (14) has a substantially L-shaped cross section. It is formed in a shape. Needless to say, the heat-insulating and airtight member (12) is not limited to the corners, but can be similarly arranged at a straight portion or a corner. The protruding part (13) and the fixing plate part (14) can be formed in an appropriate shape according to the arrangement part.

FIG. 3 is a perspective view showing one embodiment of a heat-insulating and airtight member which enables the composite beam to be disposed on a straight portion. As shown in FIG. 3, even in the case of the heat-insulating airtight member (12) which enables the composite beam to be disposed on the straight portion, the heat-insulating airtight member (12) for the corner shown in FIG. Similarly, the protrusion (1
3) and a fixing plate (14) are provided. That is, the fixing plate (14) has a length substantially equal to the distance between the surfaces of the wood ends (5, 6) of the composite beam, and protrudes between the fixing parts (15) provided at the opposite ends. The part (13) is protruded.
The protrusion (13) suppresses the protrusion of a portion facing the joint (7) when fitted into the concave portion (11) of the composite beam.

Such a heat-insulating and airtight member (12) is produced in advance in a factory or the like, and a commercialized heat-insulating and airtight member (12) is joined and fixed to a composite beam at a construction site. In the construction, as shown in the sectional view of the main part of FIG. 4, the protruding portion (13) of the heat-insulating airtight member (12) is fitted into the concave portion (11) of the composite beam. At this time, the fixing plate (14)
The fixing part (15) located at the opposite end of the wood end piece (5, 6) is disposed on the side surface of the wood end piece (5, 6). Then, as shown in FIG. 1, the fixing tool (16) is driven from the fixing portion (14) toward the wood offcuts (5, 6) and joined. The adiabatic airtight member (12) is fixed to the composite beam. Interior and exterior materials (17)
Is attached so as to cover the heat-insulating airtight member (12). At that time, if necessary, construct the body gap etc. and fix the fixed plate part (1
The step due to the thickness of 4) can be eliminated.

The heat-insulating airtight member (12) has heat insulating properties, and the heat insulating property solves the problem of the heat insulating property of the steel frame (4) provided in the composite beam, and the composite beam is provided with heat insulating property. You. The gap (10) unavoidably formed at the joint (7) is sealed by the installation of the heat-insulating airtight member (12). Airtightness of the space above the ceiling is ensured. As described above, the finished product is used for the heat-insulating and airtight member (12), and there is no need to perform on-site processing. As is clear from the above, attachment and fixing to the composite beam is simple and does not require any particular skill. Carpenter work is possible and cost reduction is achieved. The construction quality is uniform, there is no variation, and the heat insulation and airtightness are sufficiently exhibited.

In the heat insulating and airtight structure of the composite beam of the present invention,
As shown in FIGS. 2 and 3, an elastic sealing material (18) having elasticity may be provided at the edge of the heat-insulating airtight member (12) to further ensure airtightness.
Due to the elastic sealing material (18), even if there is some unevenness, the heat-insulating airtight member (12) can follow and contact the composite beam at least at its edge.

There is no particular limitation on the material, structure and the like of the heat-insulating and airtight member (12). For example, when formed from a foamed material such as urethane foam, the weight is reduced and the workability is improved. Also, in this case, a tack or the like can be used for the fixing tool (16) used for joining with the composite beam, and can be easily attached and fixed by a tucker or the like. FIG. 5 is a perspective view of a principal part showing another embodiment of the heat insulating and airtight structure of the composite beam of the present invention. 6 and 7 are enlarged perspective views each showing the heat-insulating and airtight member shown in FIG. 5.

In the heat insulating and airtight structure of the composite beam of the present invention,
The fixing plate portion (15) of the heat-insulating airtight member (12) can be formed from an airtight sheet material. By applying this airtight sheet material, as shown in FIG.
The thickness of the fixed plate portion (14) including 5) is smaller than that of the embodiment shown in FIG. 4, and the formation of the step due to the fixed plate portion (14) is eliminated. There is no need for a body difference or the like, and the interior / exterior material (17) can be directly attached.

As described above, when the fixing plate portion (14) is a heat-insulating airtight member (12) formed of an airtight sheet material,
The attachment and fixation of the composite beam to the wood offcuts (5, 6) is performed, for example, by providing an adhesive on the fixing portion (15), and attaching the fixing portion (15) to the wood offcuts (5, 6) by the adhesive force of the adhesive. ). Various kinds of adhesives can be appropriately used. In some cases, the use of double-sided tape is also possible. Further, in the heat-insulating airtight member (12), since the airtightness can be sufficiently obtained by the fixing plate portion (14), the elastic sealing material (1) as described in the previous embodiment is used here.
8) may be omitted.

FIG. 9 is a perspective view of a principal part showing another embodiment of the heat insulating and airtight structure of the composite beam of the present invention. This figure 9
In the embodiment shown in FIG. 2, the heat-insulating airtight member (12) is
As in the case of the heat-insulating airtight member (12) shown in FIG.
4) employs a corner having an approximately L-shaped cross section, and is disposed on the concave portion (14) side of the composite beam. However,
In this heat-insulating hermetic member (12), the cross-sectional area of the corner (19) of the fixing plate (14) is larger than that of the other portions as compared with the heat-insulating hermetic sealing member (12) for the corner shown in FIG. The length of the fixing plate portion (14) is slightly longer than the distance between the surfaces of the wood ends (5, 6) of the composite beam.

When the pillar (20) is erected on the protruding corner side of the joined composite beam, the floor or ceiling base material (21) laid on the upper surface of the composite beam is located near the column (20). The located part is cut out along the partial outer shape of the pillar (20). Due to the formation of the notch, a gap is formed between the corner portion (19) of the fixing plate portion of the heat-insulating airtight member (12) and the notch portion of the base material (21), and the airtightness often decreases. This is particularly apparent when a floor having a high rigidity of a horizontal construction surface is formed. However, by attaching and fixing the heat-insulating airtight member (12) shown in FIG. 9 to the concave portion (11) side of the composite beam, The gap formed between the corner (19) of the fixing plate portion of the heat-insulating hermetic member (12) and the cutout of the base material (21) can be sealed to ensure airtightness.

That is, in the heat insulating and airtight member (12) shown in FIG. 9, since the cross-sectional area of the corner (19) of the fixing plate (14) is larger than other portions, the fixing plate (14) The periphery of the notch of the base material (21) can be placed on the corner (19). In addition, since the fixed plate portion (14) is slightly longer than the distance between the surfaces of the wood scraps (5, 6), the fixed board portion (14) reliably comes into contact with the base material (21) at the end face. Even on a floor having high rigidity in a horizontal structure, airtightness can be sufficiently and easily ensured.

Of course, the present invention is not limited by the above embodiment. It goes without saying that various aspects are possible for details such as the material, structure, and shape of the heat-insulating airtight member.

[0025]

As described in detail above, according to the present invention, it is possible to easily impart heat insulation to a composite beam in which a steel frame material and a wood-based scrap are combined, and to secure airtightness at a joint.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part showing an embodiment of a heat insulating and airtight structure of a composite beam according to the present invention.

FIGS. 2A and 2B are perspective views each showing one embodiment of a heat-insulating airtight member.

FIG. 3 is a perspective view showing another embodiment of the heat-insulating airtight member.

FIG. 4 is a sectional view of a main part of the embodiment shown in FIG. 1;

FIG. 5 is a perspective view of a main part showing another embodiment of the heat insulating and airtight structure of the composite beam of the present invention.

FIGS. 6A and 6B are enlarged perspective views of the heat-insulating airtight member shown in FIG. 5;

FIG. 7 is an enlarged perspective view of the heat-insulating airtight member shown in FIG. 5;

FIG. 8 is a sectional view of a main part of the embodiment shown in FIG. 5;

FIG. 9 is a perspective view of a main part showing another embodiment of the heat insulating and airtight structure of the composite beam of the present invention.

FIG. 10 is an essential part perspective view showing a composite beam.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st flat plate part 2 2nd flat plate part 3 3rd flat plate part 4 Steel frame material 5, 6 Wood end piece 7 Joint part 8 Connection jig 9 Bolt and nut 10 Gap 11 Concave part 12 Insulated airtight member 13 Projection part 14 Fixing plate part 15 Fixing part 16 Fixing tool 17 Interior / exterior material 18 Elastic sealing material 19 Entering corner part 20 Column 21 Base material

Claims (4)

[Claims] 1. A first and a second flat plate portion disposed opposite to each other are connected by a third flat plate portion at a substantially central portion of each of the first and second flat plate portions.
A thermally insulated and airtight structure of a composite beam in which a wooden piece is disposed on the surface side of first and second horizontal portions of a steel frame material having a substantially H-shaped cross section, wherein the first and second steel frame materials are provided. And the concave portion formed by the third flat plate portion can be fitted to the flat plate portion of the steel frame material except for the joint between the composite beams provided at the end of the third flat plate portion of the steel frame material. The enabled protrusion has a length substantially equal to the distance between the surfaces of the wood scraps, and has a heat insulating property protruding between the fixing portions of the fixing plate portion having the fixing portion at the opposite end. Fitting the protruding portion of the heat-insulating airtight member into the concave portion of the composite beam, arranging the fixing portion of the fixing plate portion on the side surface of the wood scrap, joining to the wood scrap and fixing the heat-insulating airtight member to the composite beam. Insulated and airtight structure of composite beams characterized by 2. The heat insulating and airtight structure for a composite beam according to claim 1, wherein the fixing plate portion of the heat insulating and airtight member is formed of an airtight sheet material. 3. The heat-insulating and airtight member is for a corner having a fixed plate portion having a substantially L-shaped cross section. The heat insulating and airtight structure of a composite beam according to claim 1, wherein the length of the composite beam is slightly longer than the distance between the surfaces of the wood ends. 4. The heat insulating and airtight structure of a composite beam according to claim 1, wherein an elastic sealing material having elasticity is disposed at an edge of the heat insulating airtight member.