JP2006283300A - Air-tight structure and composite air-tight thermal insulating material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air-tight structure and a composite air-tight thermal insulating material capable of simplifying work and ensuring positive airtightness and, at the same time, surely holding a thermal insulating material in a position to be placed. <P>SOLUTION: The air-tight structure places an elastic foam 2 having airtightness and elasticity in a position facing a structural member of the thermal insulating material 1 having airtightness to make it fit to the thermal insulating material 1 by making use of elasticity and, at the same time, it press-contacts the structural member to be faced. A composite material A has the thermal insulating material 1 having airtightness and the elastic foam 2 having airtightness and elasticity, and the elastic foam 2 is placed at the end section of the thermal insulating material 1 and, at the same time, it is made to fit by making use of elasticity of the elastic foam. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  INDUSTRIAL APPLICABILITY The present invention is advantageous in realizing an airtight structure at a connecting portion between the two when a panel-like heat insulating material having airtightness is attached to a structural member constituting a housing of a house, and realizing this airtight structure. It relates to a composite hermetic insulation.

  When the heat insulating layer and the airtight layer are formed on the indoor side of the house, the heat insulating material that forms the heat insulating layer and the airtight material that forms the airtight layer are generally different materials. Recently, an airtight heat insulating material having both airtightness and heat insulating property formed by a hard plastic-based material including a molded body such as rigid urethane foam, extruded foamed polystyrene or phenolic resin foam, and foam has been provided. By using this airtight heat insulating material, it is possible to form a heat insulating layer and an airtight layer in one operation.

  Since the above-mentioned hermetic heat insulating materials are extremely inelastic, even if they are fitted between columns or between beams in a house with a steel frame, they are elastic. Therefore, it is difficult to compress the airtight heat insulating material in order to keep it within a predetermined size. Therefore, in most cases, there is a problem that a gap is generated and the airtightness cannot be expected, and there is a problem that the airtight heat insulating material cannot be expected to be held in pressure contact with the pillar or the beam.

  In order to solve the above problem, for example, a technique described in Patent Document 1 has been proposed. In this technology, on both sides of the plate-like heat insulating material, a plurality of small parallel wires that are substantially perpendicular to the plate surface, the notch interval is smaller than the plate thickness, the depth is deeper than half the plate thickness, and parallel to each other. By providing the groove, elasticity is exhibited. In this technology, the plurality of narrow grooves formed in the thickness direction exerts elasticity in the direction perpendicular to the narrow grooves, and when fitted between the members, the members can be pressed against and self-held. It is.

  Moreover, the technique described in Patent Document 2 is airtight by connecting a structural member constituting a housing of a house and an airtight heat insulating material disposed facing the structural member by an airtight material having airtightness. The layers are configured to be continuous. In this technology, packing materials, metal films, metal sheets, synthetic resin films, synthetic resin sheets, etc. having appropriate elasticity are selectively used as airtight materials, and structural members and heat insulating materials are connected by these airtight materials. By doing so, it is possible to hold | maintain this heat insulating material between structural members in the state which ensured airtightness.

  Moreover, the technique described in Patent Document 3 is a structural member in advance when connecting the structural member constituting the casing and the heat-insulating material having airtightness arranged facing the structural member while ensuring airtightness. A packing material having elasticity and airtightness is fixed to the packing material, and a small edge of a heat insulating material is pressed against the packing material. In this technique, by fixing the packing material to the structural material in advance and arranging the heat insulating material, the elasticity of the packing material acts on the structural member and the heat insulating material even though the heat insulating material does not have elasticity, and is arranged. It is possible to hold the heat insulation material.

Japanese Utility Model Publication No. 60-184903 JP 2004-076314 A JP 2004-076315 A

  In the technique of Patent Document 1, it is unavoidable that the heat insulating property is lower than the state before the slit is inserted because the slit cannot be crushed in order to make the heat insulating material cut and to make the elasticity work. Absent. For this reason, it is necessary to exhibit the equivalent performance by increasing the thickness of the heat insulating material. Further, it is necessary to increase the thickness of the heat insulating material by the amount of the grooves formed in the thickness direction of the heat insulating material. In this technique, the notch interval is smaller than the plate thickness and the depth is deeper than half the plate thickness, so that the thickness of the heat insulating material between the narrow grooves is thinner than the plate thickness, which may deteriorate the heat insulation performance. . Also, with this technology, the heat insulating material is directly pressed against the member, and the contact surface of the heat insulating material with the member usually has some unevenness, but the connection portion is in contact with hard objects, smoothness and mutual linearity There is also a problem that airtightness cannot be ensured.

  In the technique of Patent Document 2, since the airtight tape is applied to the connection portion between the structural member and the heat insulating material, even when the heat insulating material is not evenly in contact with the structural member, airtightness is surely ensured. And the insulation can be held between the structural members. However, since the work of applying the airtight tape is performed by a person, the problem of taking time and effort cannot be eliminated.

  In the technique of Patent Document 3, a packing material is fixed to a structural member of a frame such as a column or a beam, and the structural member is connected to the edge of the heat insulating material using the elasticity of the packing material. It is possible to secure the heat insulating material between the structural members without using any special means other than the packing material. However, the work of fixing the packing material to the structural housing is performed by an operator at the site, which is troublesome.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an airtight structure that is easy to work and ensures reliable airtightness and that can reliably hold a heat insulating material in an arrangement position, and a composite that is advantageous for realizing this airtight structure. The object is to provide a hermetic insulation.

  In order to solve the above problems, an airtight structure according to the present invention is an airtight structure of a structural member constituting a housing of a house and a panel-like heat insulating material having airtightness arranged to face the structural member. An elastic foam having airtightness and elasticity is arranged at a position facing the structural member of the panel-like heat insulating material having airtightness, and is fitted to the heat insulating material using the elasticity of the elastic foam. At the same time, it is brought into pressure contact with the opposing structural member.

  The composite hermetic heat insulating material according to the present invention comprises a heat insulating material having airtightness and an elastic foam having airtightness and elasticity, and the elastic foam is disposed at an end of the heat insulating material and It is fitted using the elasticity of the elastic foam.

  In the airtight structure according to the present invention, an elastic foam having airtightness and elasticity is disposed at a portion where the structural member constituting the housing of the housing and the heat insulating material having airtightness face each other, and the elastic foam is used as the heat insulating material. The surface of the heat insulating material facing the structural member can be pressed against and closely contacted with the surface of the structural member following the unevenness or distortion of the surface. The airtightness of the connection part between the structural member and the heat insulating material can be reliably ensured, and the heat insulating material can be held.

  In the composite hermetic heat insulating material according to the present invention, the elastic foam having airtightness and elasticity is arranged at the end of the heat insulating material having airtightness, and is formed by fitting with the elasticity of the elastic foam. It is configured as a composite material in which the elastic foam and the heat insulating material are integrated, and when disposed between the structural members constituting the housing, it can ensure high airtightness together with the structural members, and the elastic foam The heat insulating material can be held by the elastic action.

  In particular, since the elastic foam is elastically deformed to generate a compressive force corresponding to the amount of deformation, the acting elastic force can be adjusted by appropriately setting the cross-sectional shape of the elastic foam. For this reason, a preferable compressive force can be made to act on a heat insulating material corresponding to the shape and site | part of a structural member. Therefore, even if there are irregularities on the smoothness of the surface of the structural member of the heat insulating material and the connecting surface of the heat insulating material facing the surface, good airtightness can be exhibited.

  Further, since the elastic foam and the heat insulating material are integrated as a composite material, an operation of separately attaching a packing material to the housing is not required, and the operation is simple and the workability can be improved.

  In addition, when the heat insulating material is extremely hard, corners may be missing, but in the case of a composite material in which an elastic foam is integrated, the heat insulating material can be protected by this elastic foam, Chipping and the like can be eliminated. In addition, since the elastic foam and the heat insulating material can be easily integrated on site, in the state where the elastic foam is attached to one side of the heat insulating material, the adjustment member is present on both sides. Therefore, the number of parts can be reduced, and the processing shape may be complicated.

  Hereinafter, preferred embodiments of an airtight structure according to the present invention will be described. The airtight structure of the present invention has an airtight and elastic elastic foam at a portion where a structural member constituting a housing of a house and a panel-like heat insulating material having airtightness (hereinafter simply referred to as “heat insulating material”) face each other. It is arranged so that the heat insulating material can be fitted by utilizing the elasticity of the elastic foam, and at the same time, the structural member and the heat insulating material can be elastically connected. By acting, it is realized to be held between pillars and beams that become structural members.

  In the present invention, the structural members constituting the housing of the house are pillars and beams, and the heat insulating material is not attached to the indoor side surface of these structural members, but by the pillars and beams, the beams and the beams. It arrange | positions inside the space formed and is connected facing these structural members. Therefore, the hermetic layer is constituted by a surface formed of a heat insulating material having a gas tightness and a structural member.

  Although the material of the structural member which comprises a housing is not specifically limited, In order to exhibit high airtightness, it is preferable that it is a steel frame. Thus, in the case of a steel frame, it is possible to form an airtight layer having high airtightness and continuity by the heat-insulating material having airtightness and the elastic foam having airtightness.

  In the present invention, the material or the like is not particularly limited as the heat-insulating material having airtightness, and a plate-like heat insulating material having airtightness and heat-insulating properties can be used. As such a heat insulating material, there is a hard plastic type heat insulating material including a molded body such as rigid urethane foam, extruded foamed polystyrene, or a phenol resin foam or a foamed body, and any of them can be used. In particular, in the present invention, when applied to a panel-like heat insulating material made of a hard plastic heat insulating material, the elasticity of the elastic foam can be added to the hardness of the heat insulating material to exert a higher effect. It becomes possible.

  Rigid urethane foam and extruded polystyrene have high hardness, and it is possible to exhibit sufficient airtightness and heat insulation performance as a house by selecting the thickness. However, rigid urethane foam has problems such as deterioration of heat insulation performance over time, deflagration in fire and generation of harmful gas, and foamed polystyrene is inferior in chemical resistance, so airtight treatment materials are limited. There is also a problem that it is easy to burn.

  Further, as a heat-insulating material made of a phenol resin foam and having airtightness, there is a technology (Neoma Foam (registered trademark)) developed by the present applicant and already applied for an international application (Japanese Patent Application No. 2000-558158).

Phenolic resin foam according to the above techniques, and the phenol resin base portion, density and a bubble portion formed from a large number of fine bubbles are phenol foam of ^{10kg / m 3 ~100kg / m 3} , the fine bubbles It contains hydrocarbons and has an average cell diameter in the range of 5 μm to 200 μm, and the cell walls of most of the fine cells are composed of a smooth phenol resin substrate surface.

Despite the fact that the foaming agent is a hydrocarbon, it has thermal conductivity comparable to that of conventional fluorocarbon foaming agents, and there is no change in thermal conductivity over time, and it excels in mechanical strength such as compressive strength. , The brittleness is improved.

  The phenol resin foam has high heat insulating properties and airtightness, and has the property of maintaining these performances for a long time. The heat insulating property in the phenol resin foam can be ensured by keeping the bubble diameter as small as 5 μm to 200 μm, preferably as small as 10 μm to 150 μm and keeping the closed cell ratio as high as 80% or more. Moreover, the phenol resin foam has high combustion resistance, and when the flame acts, the surface is carbonized, so that no ignition occurs and no gas is generated.

For example, when the density of the phenol resin foam is set to 27 kg / m ³ , the thermal conductivity at 20 ° C. is 0.02 W / m · K, the compressive strength is 15 N / cm ² , and the thermal deformation temperature is 200 ° C. As for the performance of the phenol resin foam, three types of extruded polystyrene foam have thermal conductivity: 0.028 W / m · K, compressive strength: 20 N / cm ² , heat distortion temperature: 80 ° C., rigid urethane foam Two types have sufficiently high performance compared with thermal conductivity; 0.024 W / m · K, compressive strength; 8 N / cm ² heat distortion temperature; 100 ° C.

  For this reason, a heat insulating material made of a phenol resin foam can exhibit substantially the same heat insulating performance with a thickness of about 2/3 that of conventional extruded polystyrene or rigid urethane foam.

  Moreover, since a phenol resin foam is a comparatively brittle material, it is common to provide the protective layer which consists of a kraft paper or a nonwoven fabric at least on one side. In particular, the phenol resin foam laminate disclosed in Japanese Patent Application Laid-Open No. 11-198332, which has been developed and patented by the present applicant, has improved adhesive performance by improving the nonwoven fabric forming the protective layer. The strength of the phenolic resin foam is improved by this nonwoven fabric, and it is provided as a heat insulating material for building excellent in both strength and heat insulation.

  As described above, the heat insulating material made of the laminated plate in which the protective layer is provided on the front and back surfaces of the phenol resin foam has a state in which the end surface (small edge surface) is exposed to the phenol resin substrate surface. For this reason, it is possible to attach a sticking tape or a sticking sheet using the nonwoven fabric which constitutes a protective layer on the front and back sides, but the other side sticks other members compared to the front and back sides. Is difficult.

  As described above, the hard plastic-based heat insulating material has high airtightness and heat insulating properties, but is inferior in elasticity and inferior in the adhesiveness of the facet.

  The airtight elastic foam of the present invention is disposed at a position facing the structural member of the heat-insulating material having the above-mentioned airtightness, and is elastically fitted to the heat-insulating material and pressed against the facing structural member. It is arranged between the heat insulating material and the structural member and exhibits high airtightness and elasticity. For this reason, as an elastic foam, it is preferable to have the elasticity which can make the force of the grade which can hold | maintain an arrangement position with respect to the heat insulating material arrange | positioned between the structural members which comprise a housing.

Any elastic foam can be used as long as it satisfies the above conditions, and the material is not particularly limited. As such an elastic foam, it is preferable that it is a foaming material made of a resin mainly composed of polyethylene, and has independent bubbles by foaming 20 times to 100 times. In addition, although it is possible to control the repulsive force on the accommodation by setting the end shape of the elastic foam, it is appropriate that the compressive strength of the elastic foam is about 1 to 4 N / cm ^2. It is considered a thing.

  The elastic foam having the properties as described above is disposed at a position facing the structural member of the heat insulating material, and the elastic foam is used to fit and integrate the heat insulating material and to be elastic. It is possible to hold the heat insulating material by applying a corresponding force to both.

  Next, a preferred embodiment of a composite hermetic heat insulating material (hereinafter simply referred to as “composite material”) according to the present invention will be described. The composite material of the present invention is integrated by placing an elastic foam having airtightness and elasticity at the end of an airtight heat insulating material and fitting the elastic foam using the elasticity of the elastic foam. It is.

  The composite material of the present invention is arranged at the end of a heat-insulating material having airtightness, and exhibits high airtightness and elasticity by being integrated by elastic fitting, and constitutes a housing of a house When disposed between the structural members, the elastic foam can press-contact the structural member to maintain the position of the heat insulating material.

  As the heat-insulating material having airtightness constituting the composite material of the present invention, it is preferable to use the hard plastic heat insulating material described above.

  Moreover, as the elastic foam having airtightness constituting the composite material of the present invention, the aforementioned foam is preferably used.

  The width dimension of the composite material is not particularly limited, and is preferably set as appropriate in accordance with the module dimension set for the residential building. In particular, it is possible to improve workability at the time of construction by setting the dimension to an integral multiple of the module dimension. The length dimension is not particularly limited, but is preferably set to a dimension between the lower-level beam and the upper-level beam in one level.

  The composite material is integrated by gripping the heat insulating material fitted by the elasticity of the elastic foam while the elastic foam is arranged on the end side of the heat insulating material and the end of the heat insulating material is fitted. To do. For this reason, it is preferable that the elastic foam is formed in a long shape, and a fitting groove having a dimension slightly smaller than the thickness of the heat insulating material is formed in the longitudinal direction. By forming such a fitting groove, it is possible to hold the end of the heat insulating material in the fitting groove so that the elasticity of the elastic foam material acts in the thickness direction of the heat insulating material. It becomes possible.

  In this way, by covering the small edge surface of the heat insulating material by fitting the end of the heat insulating material to the elastic foam, the surface roughness of the small edge surface of the heat insulating material, the smoothness of the surface, or the perpendicularity to the front and back surfaces Even if the accuracy is poor, it is possible that this small facet does not directly contact the structural members that make up the housing, so that airtightness is not hindered and high airtightness can be exhibited. It becomes.

  When the fitting groove is formed along the longitudinal direction of the elastic foam, the shape of the opposite side of the fitting groove is not particularly limited, and is appropriately set according to the shape of the opposing structural member. Is possible. Examples of such shapes include a shape having a surface inclined in the width direction, a shape in which ridges are formed in the longitudinal direction, and a shape in which grooves similar to the fitting grooves are formed. The cross-sectional shape of such an elastic foam is preferably set to an optimum one for conditions such as the shape of the building member to be applied.

  The composite material of the present invention does not ask whether or not the ends of all four sides of the heat insulating material are fitted to the elastic foam, and it is sufficient that at least one end is fitted to the elastic foam.

  Next, embodiments of the present invention will be described with reference to the drawings. First, the structure of the composite material will be described. FIG. 1 is a diagram illustrating the configuration of the composite material according to the present embodiment. FIG. 2 is a diagram for explaining an example of the cross-sectional shape of the elastic foam.

  As shown in FIG. 1, the composite material A is composed of a heat-insulating material 1 having airtightness and elastic foams 2 disposed at both ends in the longitudinal direction of the heat-insulating material 1. As the heat insulating material 1, a phenol resin foam is used, and a protective layer 1b made of a nonwoven fabric is formed on the front and back surfaces of the foam 1a. Therefore, the end surface of the heat insulating material 1 is formed as a small edge surface 1c from which the foam 1a is exposed.

  The heat insulating foam b is formed in a long shape, and a fitting groove 2b is formed by a pair of holding pieces 2a formed along the longitudinal direction. The width dimension of the fitting groove 2b is formed to be slightly smaller than the thickness dimension of the heat insulating material 1, and when the end portion including the small edge surface 1c of the heat insulating material 1 is fitted to the fitting groove 2b. The heat insulating material 1 is held by the elastic foam 2 by the force of the pair of holding pieces 2a acting on the heat insulating material 1 in the thickness direction.

  An engaging surface 2c is formed on the opposite side of the elastic foam 2 from the fitting groove 2b. The engaging surface 2c has a function of directly applying contact with the surfaces of columns and beams, which are structural members constituting the housing of the house, to apply a compressive force. Therefore, the shape of the engagement surface 2c is not limited as long as it can exhibit the above function.

  In the composite material A configured as described above, when the heat insulating material 1 is held by the holding piece 2a of the elastic foam 2 and is disposed between the structural members, the elastic foam 2 is in pressure contact with the surface of the structural member. By deforming and applying a force corresponding to the amount of deformation to the structural member and the heat insulating material 1, it is possible to maintain the arrangement position of the composite material A between the structural members.

  In addition, in the present Example, although the composite material A which made the both ends of the longitudinal direction of the heat insulating material 1 fit to the elastic foam 2 was comprised, it is not limited to this structure, The width direction of the heat insulating material 1 is comprised. It is also possible to constitute a composite material in which both ends are fitted to the elastic foam 2 or both ends in the longitudinal direction and both ends in the width direction are fitted to the elastic foam 2. Furthermore, it is natural that even when one end portion in the longitudinal direction of the heat insulating material 1 or one end portion in the width direction is fitted to the elastic foam 2, it has a function as a composite material.

  The engagement surface 2c of the elastic foam 2 constituting the composite material A can be formed, for example, as shown in FIG.

  In FIG. 2A, the engaging surface 2c is formed as a one-flow inclined surface 2d. With this engagement surface 2c, when the elastic foam 2 is brought into contact with the surface of the column or beam, it can be inserted along the inclined surface, and workability can be improved. In particular, the holding force acting on the heat insulating material 1 can be adjusted by changing the engagement depth of the engagement surface 2c. For this reason, the holding force necessary for holding between the structural members is realized by adjusting the length of the heat insulating material 1 or fitting a material having airtightness in the fitting groove 2b of the elastic foam 2 or the like. Is possible.

  In FIG. 4B, the engaging surface 2c is formed by a pair of protruding pieces 2e. The thickness and length of the protruding piece 2e are not particularly limited, but if formed with the same specifications as the holding piece 2a, the directionality is lost. Therefore, when the heat insulating material 1 is fitted to the elastic foam 2 It is preferable because workability is improved. Thus, when the engaging surface 2c is formed by a pair of projection pieces 2e, these projection pieces 2e can be selectively bent and brought into pressure contact with the surface of the structural member.

  That is, one projection piece 2e is bent and the other projection piece 2e is raised, the bent projection piece 2e is pressed against the surface of the structural member to hold the heat insulating material 1, and the other projection piece 2e is raised. In this state, it is possible to ensure airtightness by contacting the step portion of the structural member. It is also possible to adjust the force acting on the heat insulating material 1 by bending the pair of protruding pieces 2e so as to overlap each other and bringing them into pressure contact with the surface of the structural member.

  Further, the pair of protrusion pieces 2e do not have to have the same length, and one protrusion piece 2e may be formed long and the other protrusion piece 2e may be formed short. Thus, when the length of the projection piece 2e differs, it is advantageous, for example, when the side face between the flanges of the beam made of H-shaped steel is measured. That is, it is possible to ensure airtightness by bending the longer projection piece 2e and pressing it against the inner surface of the flange, and standing the shorter projection piece 2e to cover the surface of the thick portion of the flange. .

  In FIG. 2C, the engaging surface 2c is formed as a convex strip 2f at the substantially center in the width direction. Conditions such as the height of the ridge 2f and the dimensions of the base are not particularly limited, and can be set as appropriate according to the force required to hold the heat insulating material 1. As described above, when the engaging surface 2c is formed by the ridges 2f, any portion can be used as long as the surface of the structural member is a flat surface.

  Next, an embodiment of an airtight structure will be described with reference to the drawings. FIG. 3 is a diagram for explaining an airtight structure when the structural member is a column.

  In the figure, reference numeral 10 denotes a pillar as a structural member constituting a housing of a house, and is formed of a square steel pipe. An elastic foam 2 having an engagement surface 2c formed by an inclined surface 2d as shown in FIG. 2A is disposed at the end of the heat insulating material 1 facing the column 10, and the elastic foam 2 is fitted. The end of the heat insulating material 1 is fitted into the joint groove 2b. Therefore, the composite material A described above is constituted by the heat insulating material 1 and the elastic foam 2.

  The composite material A is disposed between the column 10 and another column adjacent to the column 10, and one end thereof is in pressure contact with the side surface 10 a of the column 10. The elastic foam 2 is elastically deformed by the pressure contact of the composite material A to the column 10, and a force corresponding to the deformation acts as a holding force of the heat insulating material 1. Therefore, there is no gap in the contact surface between the side surface 10a of the column 10 and the inclined surface 2d of the elastic foam 2, and airtightness can be ensured.

  Further, the heat insulating material 1 is held with its end portion sandwiched between the holding pieces 2 a of the elastic foam 2, and the bottom of the fitting groove 2 b is the small edge surface 1 c of the heat insulating material 1 due to the compressive force accompanying the elastic deformation of the elastic foam 2. It is possible to ensure high airtightness by abutting with.

  Next, another embodiment of the airtight structure will be described. FIG. 4 is a diagram for explaining a structure for securing airtightness including a thickness portion of a flange of the beam, where the structural member is a beam.

  In the figure, reference numeral 11 denotes a beam made of H-shaped steel having a flange 11a and a web 11b, and is configured to ensure airtightness on one side surface including the end surface of the flange 11a of the beam 11.

  In this embodiment, the beam 11 is a structural member, and the heat insulating material 1 is disposed between the surfaces of the flange 11a on the web 11b side (the inner surface of the flange 11a). An elastic foam 2 shown in FIG. 2B is arranged at the end of the heat insulating material 1 facing the inner surface of the flange 11a, and the end of the heat insulating material 1 is fitted in the fitting groove 2b of the elastic foam 2. The heat insulating material 1 is held by elasticity by the holding piece 2b. Therefore, the composite material A is constituted by the heat insulating material 1 and the elastic foam 2.

  Of the pair of protruding pieces 2e of the elastic foam 2, the protruding piece 2e on the web 11b side is pressed against the inner surface of the flange 11a, and the other protruding piece 2e is upright and the tip portion is the flange 11a. It is in contact with the end face.

  As described above, the protrusion 2e on the web 11b side is bent and elastically deformed by being pressed against the inner surface of the flange 11a, and the force generated according to the elastic deformation acts as a holding force of the heat insulating material 1, Thereby, the heat insulating material 1 is hold | maintained between the flanges 11a. At the same time, it is possible to ensure the airtightness of the side surface of the beam 11 by bringing the projection piece 2e on the other side into contact with the end surface of the flange 11a.

  In order to secure the airtightness between the flanges 11a of the beams 11, the elastic foams 2 are respectively provided between the inner surfaces of the upper and lower flanges 11a and the end portions of the heat insulating material 1, as shown in FIG. Although it is possible to arrange and press-contact, it is not limited to this structure, and as shown in FIG. 5B, between the inner surface of the lower flange 11a of the beam 11 and the end portion of the heat insulating material 1. An elastic foam is disposed, and on the upper flange 11a side, a step substantially equal to the thickness of the flange 11a is formed on the small face 1c of the heat insulating material 1, and this step portion is brought into contact with the inner surface and the end surface of the flange 11a. You may make it press-contact with the force accompanying the elastic deformation of the body 2.

  Next, another embodiment of the airtight structure will be described. FIG. 5 is a view for explaining a structure for ensuring airtightness when the opponent is a flat surface.

  FIG. 5 (a) shows an elastic foam in which an engagement surface 2c is formed by a convex strip 2f at the end of the heat insulating material 1 facing the side surface 10a of the column 10 as a structural member, as shown in FIG. 2 (c). The body 2 is arranged, and the end of the heat insulating material 1 is fitted into the fitting groove 2b of the elastic foam 2. Therefore, the composite material A is constituted by the heat insulating material 1 and the elastic foam 2.

  The composite material A is disposed between the column 10 and another column adjacent to the column 10, and one end thereof is in pressure contact with the side surface 10 a of the column 10. The elastic foam 2 is elastically deformed by the pressure contact of the composite material A to the column 10, and a force corresponding to the deformation acts as a holding force of the heat insulating material 1. Therefore, there is no gap in the contact surface between the side surface 10a of the column 10 and the inclined surface 2d of the elastic foam 2, and airtightness can be ensured.

  Further, the heat insulating material 1 is held with its end portion sandwiched between the holding pieces 2 a of the elastic foam 2, and the bottom of the fitting groove 2 b is the small edge surface 1 c of the heat insulating material 1 due to the compressive force accompanying the elastic deformation of the elastic foam 2. It is possible to ensure high airtightness by abutting with.

  FIG. 5B shows another example in which the airtightness is secured by using the elastic foam 2 formed with the ridges 2f. In this example, the two heat insulating materials 1 are arranged with the facets 1c facing each other, the elastic foam 2 is arranged between the heat insulating materials 1, and the heat insulating material 1 on one side in the fitting groove 2b. The composite material A is comprised by fitting.

  Two ridges 2f provided on the engagement surface 2c of the elastic foam 2 are pressed against the small edge surface 1c of the other heat insulating material 1 adjacent to each other, thereby causing elastic deformation, and the two forces against which this elastic deformation opposes. It acts on the heat insulating material 1. In particular, since the elastic foam 2 disposed between the two heat insulating materials 1 facing each other is elastically deformed, there is no gap between the small-mouthed surfaces 1c of these heat insulating materials 1, and high airtightness is achieved. It is possible to secure.

  Next, another embodiment of the airtight structure will be described. FIG. 6 is a diagram illustrating a structure for ensuring airtightness when the counterpart is a flat surface, and is a diagram illustrating another structure in which the heat insulating material 1 and the elastic foam 2 are integrated.

  As shown in the figure, two grooves 1e are formed at the end portion of the heat insulating material 1 facing the pillar 10, and two convex strips 2g are formed on the surface facing the heat insulating material 1 of the elastic foam. Is formed. The width of the ridge 2g is slightly larger than the width of the groove 1e. When the ridge 2g is fitted into the groove 1e, the elastic foam 2 can be held in the bonded state to the heat insulating material 1. It is configured. Therefore, the composite material A is constituted by the heat insulating material 1 and the elastic foam 2.

  The shape of the surface of the elastic foam 2 that faces the column 10 is not particularly limited, and it may be an inclined surface, a shape provided with a pair of protruding pieces, or a shape provided with a single protrusion. Further, it may be a completely flat surface. Further, the number of grooves 1e formed in the heat insulating material and the number of protrusions 2g provided on the elastic foam 2 are not limited to two as in this embodiment, and one is sufficient. is there.

  In the composite material A of the present embodiment, when the elastic foam 2 is integrated with the heat insulating material 1, the groove 1e provided on the small edge surface of the heat insulating material 1 is used. It is not necessary to make the thickness greater than 1, and the entire thickness can be made substantially equal, which is advantageous.

  The airtight structure of the present invention secures airtightness by disposing an elastic foam between the structural member constituting the housing of the house and the end portion of the heat insulating material and press-contacting them. For this reason, it can be used for a frame structure such as a wooden structure or a steel structure.

  Further, the composite material of the present invention is a material in which an elastic foam is disposed at the end of an airtight heat insulating material and the heat insulating material is fitted and integrated, and a rigid member such as a structural member or an adjacent member is formed. By press-contacting with the heat insulating material to be performed, it is possible to hold the heat insulating material and ensure high airtightness.

It is a figure explaining the structure of a composite material. It is a figure explaining the example of the cross-sectional shape of an elastic foam. It is a figure explaining an airtight structure in case a structural member is a pillar. It is a figure explaining the structure for ensuring the airtightness including the thickness part of the flange of the beam which a structural member is a beam. It is a figure explaining the structure for ensuring airtightness in case an other party is a flat surface. It is a figure explaining the structure for ensuring airtightness in case an other party is a flat surface, and is a figure explaining the other structure which integrates a heat insulating material and an elastic foam.

Explanation of symbols

A composite material 1 heat insulating material 1a foam 1b protective layer 1c small-mouthed surface 1e groove 2 heat insulating foam 2a holding piece 2b fitting groove 2c engaging surface 2d inclined surface 2e protruding piece 2f convex 2g convex 10 pillar 10a side 11 beam 11a flange 11b web

Claims (2)

An airtight structure of a structural member constituting a housing of a house and a panel-like heat insulating material having airtightness arranged so as to face the structural member, and facing the structural member of the panel-like heat insulating material having airtightness An elastic foam having airtightness and elasticity is arranged at a position to be fitted to the heat insulating material by using the elasticity of the elastic foam, and is pressed against a facing structural member. Airtight structure. A heat insulating material having airtightness and an elastic foam having airtightness and elasticity; and the elastic foam is disposed at an end of the heat insulating material and fitted using the elasticity of the elastic foam. A composite hermetic heat insulating material characterized by being combined.

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