Insulation structure for underfloor structure

Abstract

To provide a heat insulation structure for an underfloor structure in which the direction in which inspection is not hindered is not limited to a specific direction, and a fixed side heat insulation member can be easily attached to a floor structure member with high accuracy.SOLUTION: A heat insulation member 2 is dividedly constituted of: fixed side heat insulation members 2A arranged at each of four corners of an opening H and attached to a joist J which is a floor structure member F; and movable side heat insulation members 2B which are immovably supported between the fixed side heat insulation member 2A and a storage container main body 11 as a central member by being arranged at each of four sides of the opening H and fitting ends to the fixed side heat insulation member 2 and which can be separated from the fixed side heat insulation member 2A by being moved horizontally toward a center side of the opening H of an underfloor storage 1 as an underfloor structure in a state where the storage container main body 11 is removed.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an insulating structure for an underfloor storage cabinet or an underfloor inspection hatch (collectively referred to as "underfloor structures" in this specification), and relates to an insulating structure for an underfloor storage cabinet in which an insulating member is arranged to surround the outer periphery of the storage container body of the underfloor storage cabinet, or an underfloor inspection hatch in which an insulating member is arranged to surround the outer periphery of the inspection hatch. [Background technology]

[0002] Conventionally, for example, in the case of underfloor storage cabinets, in order to prevent the loss of heat from air conditioning or heating through the underfloor storage cabinet, an insulating structure for the underfloor storage cabinet has been proposed in which an insulating material is arranged on the lid of the underfloor storage cabinet and an insulating member is arranged to surround the outer periphery of the storage container body (see, for example, Patent Document 1).

[0003] However, in the insulation structure of this conventional underfloor storage cabinet, the insulation members arranged to surround the outer periphery of the storage container body are attached directly to the floor joists, which are the floor structural members. Therefore, due to the support strength, the height dimension cannot be increased, resulting in a problem of low insulation performance.

[0004] To address this problem, for example, as shown in Figure 7, it is possible to increase the height dimension of the insulating member 2 and improve its insulating performance by attaching it to a support member S fixed to a joist J, which is a floor structural member F, so that the back side is supported by the insulating member 2. However, in this case, the insulating structure consisting of the support member S and the insulating member 2 will surround the opening of the underfloor storage cabinet on all four sides, right up to the surface of the foundation. This meant that people could no longer enter under the floor through the opening in the underfloor storage compartment for inspection, creating a new problem in that the underfloor storage compartment could not also be used as an underfloor inspection hatch.

[0005] On the other hand, to address this problem, an insulating structure for an underfloor structure has been proposed in which the insulating member 2, which is arranged to surround the outer periphery of the storage container main body 11 of the underfloor storage shed 1 as the underfloor structure, is divided into a fixed-side insulating member 2a that is attached so as to support its back side on a support member S that is fixed to a floor structural member F, a joist J, and a movable-side insulating member 2b that is supported immovably between the fixed-side insulating member 2a and the storage container main body 11 by fitting its end into the fixed-side insulating member 2a, and that can be detached from the fixed-side insulating member 2a by moving it horizontally (in the direction of arrow A) toward the center of the opening H of the underfloor storage shed 1 when the storage container main body 11 is removed (see Patent Document 2).

[0006] This insulation structure for the underfloor structure has the advantage of increasing the height dimension of the insulation members, improving insulation performance, while not obstructing people entering under the floor through openings for inspection. However, there are problems in that the directions in which they do not obstruct are limited to the specific directions in which the movable side insulation member 2b is positioned, and it takes time and effort to accurately attach the fixed side insulation member 2a to the floor structure member F. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-293041 [Patent Document 2] Japanese Patent Application Laid-Open No. 2012-122306 Summary of the Invention [Problem to be solved by the invention]

[0008] In view of the problems with the above-mentioned conventional thermal insulation structures for underfloor structures, the present invention aims to provide a thermal insulation structure for underfloor structures that has the advantage of increasing the height dimension of the thermal insulation members of the thermal insulation structure for underfloor structures disclosed in Patent Document 2, thereby improving thermal insulation performance, while not obstructing people entering under the floor through openings for inspection, and in which the directions in which they do not obstruct are not limited to a specific direction, and in which fixed-side thermal insulation members can be attached to floor structural members accurately and easily. [Means for solving the problem]

[0009] In order to achieve the above object, the insulation structure for an underfloor structure of the present invention is an insulation structure for an underfloor structure in which insulation members are arranged to surround the outer periphery of a rectangular opening in the underfloor structure, and is characterized in that the insulation members are divided into fixed-side insulation members that are arranged at each of the four corners of the opening and attached to the floor structure members, and movable-side insulation members that are arranged at each of the four sides of the opening and have their ends fitted into the fixed-side insulation members, so that they are supported immovably between the fixed-side insulation members and the central member, and can be detached from the fixed-side insulation members by moving them horizontally toward the center of the opening of the underfloor structure with the central member removed.

[0010] In this case, the fixed-side heat insulating member can be fixed to the floor structural member by driving screws diagonally into the opening.

[0011] Furthermore, by making the angle of inclination of the inner surfaces of the fixed side insulation member and the movable side insulation member with respect to the horizontal plane of the inner surface of the upper part smaller than the angle of inclination of the outer surface of the central member of the underfloor structure with respect to the horizontal plane, it is possible to make the contact with the outer surface of the central member of the underfloor structure while gradually approaching each other, and to make the contact portion have line contact or surface contact within the horizontal plane. [Effects of the Invention]

[0012] According to the insulation structure for the underfloor structure of the present invention, the height dimension of the insulation member can be increased, improving insulation performance, while the direction in which it does not hinder people from entering under the floor through the opening for inspection is not limited to a specific direction, and the fixed-side insulation member can be attached to the floor structure member accurately and easily. [Brief explanation of the drawings]

[0013] [Figure 1] 1 shows an example of an underfloor storage cabinet to which the thermal insulation structure of the underfloor structure of the present invention is applied, in which (a) is a front view, (b) is a perspective view, (c) is a plan view of the thermal insulation member used in the thermal insulation structure of the underfloor structure, (d) is an exploded perspective view of the same, and (e) is an explanatory diagram of the fixing structure of the fixed side thermal insulation member (AA cross-sectional view of (c)). [Figure 2] The figures show the fixed-side insulating member used in the insulating structure of the underfloor structure, (a) is a plan view, (b) is a front view, (c) is a left side view, (d) is a right side view, (e) is a bottom view, (f) is a perspective view, (g) is a view seen from the arrow A in (a), (h) is a BB cross-sectional view of (a), and (i) is a CC cross-sectional view of (a). [Figure 3] The figures show the movable insulating member used in the insulating structure of the underfloor structure, (a) is a plan view, (b) is a front view, (c) is a bottom view, (d) is a right side view, (e) is a rear view, (f) is a perspective view, (g) is an AA cross-sectional view of (b), (h) is a BB cross-sectional view of (b), and (i) is a CC cross-sectional view of (b). [Figure 4] 10 is a cross-sectional view of a main part of an underfloor storage compartment to which the thermal insulation structure of the underfloor structure is applied. [Figure 5] 10 is a cross-sectional view of a main part of a modified embodiment of the underfloor storage compartment to which the thermal insulation structure of the underfloor structure is applied. FIG. [Figure 6] 10 is a cross-sectional view of the main part of the underfloor inspection hatch to which the thermal insulation structure of the underfloor structure is applied. FIG. [Figure 7] FIG. 2 is an explanatory diagram showing the heat insulating structure of the underfloor storage compartment. [Figure 8] 1A and 1B show a heat insulating member used in a conventional heat insulating structure for an underfloor structure, in which (a) is a plan view, (b) is a partially cross-sectional right side view, and (c) is a cross-sectional view taken along the line XX in (a). DETAILED DESCRIPTION OF THE INVENTION

[0014] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a heat insulating structure for an underfloor structure according to the present invention will be described below with reference to the drawings.

[0015] 1 to 4 show an embodiment of an underfloor storage cabinet to which the heat insulating structure for an underfloor structure of the present invention is applied. The insulation structure of this underfloor structure is such that insulation members 2 made of expanded plastic such as polystyrene foam are arranged to surround the outer periphery of a rectangular opening H of the underfloor storage cabinet 1 (outer frame F1 of floor structural member F) as the underfloor structure, and the insulation members 2 are divided into fixed-side insulation members 2A that are arranged at each of the four corners of the opening H and attached to the joists J that are the floor structural member F, and movable-side insulation members 2B that are arranged at each of the four sides of the opening H and are supported immovably between the fixed-side insulation member 2A and the storage container main body 11 as the central member by fitting their ends into the fixed-side insulation members 2A, and can be detached from the fixed-side insulation member 2A by moving them horizontally (in the direction of arrow X in Figure 1(c)) toward the center of the opening H of the underfloor storage cabinet 1 as the underfloor structure when the storage container main body 11 is removed.

[0016] In this embodiment, the fixed-side heat insulating member 2A is provided at both ends with fitting portions 21a that immovably support the fitting portions 21b formed at both ends of the movable-side heat insulating member 2B. This allows the movable heat insulating member 2B to be reliably supported between the fixed heat insulating member 2A and the storage container body 11 so as to be immovable.

[0017] Here, the fitting portions 21b formed at both ends of the movable side heat insulating member 2B are each configured with a step portion, and corresponding fitting portions 21a are formed at both ends of the fixed side heat insulating member 2A. This allows for a stable support structure and reliably blocks airflow between the fitting portion 21a of the fixed side insulating member 2A and the fitting portion 21b of the movable side insulating member 2B, thereby improving insulating performance.

[0018] A recess 22 is formed on the inner surface (the inner peripheral side of the insulating member 2) of the movable side insulating member 2B to hold the movable side insulating member 2B when the movable side insulating member 2B is moved horizontally (in the direction of arrow X in Figure 1(c)) toward the center of the opening H of the underfloor storage cabinet 1.

[0019] Further, the heat insulating member 2 is formed at its lower end with an edge portion 23 that protrudes toward the center of the opening H of the underfloor storage compartment 1. As shown in Figure 1(a), when the storage container body 11 is attached to the opening H of the underfloor storage shed 1, this edge portion 23 comes close to the outer peripheral surface of the storage container body 11, and works together with the inner lid 12 of the storage container body 11, which is equipped with insulating material, to form an insulating space, thereby further improving the insulating performance. Here, the edge 23 is formed with a notch 23a into which a protrusion (not shown) formed vertically on the outer peripheral surface of the storage container body 11 fits, but if a storage container body 11 without a protrusion is used, the notch 23a is not provided.

[0020] Furthermore, as shown in Figure 4, the inclination angle θa between the upper inner surface 24a of the fixed side insulating member 2A and the movable side insulating member 2B and the horizontal plane is smaller than the inclination angle θ1 between the upper inner surface 24a and the horizontal plane of the outer surface of the storage container body 11 of the underfloor storage cabinet 1, so that the inner surfaces 24 approach and come into contact with the outer surface of the central member of the underfloor structure, and by receding the outer surface of the lower part of the storage container body 11, the inner surfaces 24 of the fixed side insulating member 2A and the movable side insulating member 2B and the outer surface of the storage container body 11 of the underfloor storage cabinet 1 are in line contact within the horizontal plane (line contact with a thin line width, specifically, a line width of approximately 1 mm to 10 mm). In this embodiment, the horizontal surface of the inner surface 24a of the upper part of the movable heat insulating member 2B is The angle of inclination can be changed in two stages, but it is also possible to have no steps or to make the surface curved. Furthermore, as in the modified embodiment shown in Figure 5, the inner surfaces 24 of the fixed side insulating member 2A and the movable side insulating member 2B are configured so that the inclination angle θa between the upper inner surface 24a and the horizontal plane is smaller than the inclination angle θ1 between the upper inner surface 24a and the horizontal plane of the outer surface of the storage container body 11 of the underfloor storage cabinet 1, so that they come into contact while gradually approaching the outer surface of the central member of the underfloor structure, and by configuring the shape so that the inclination angle θb between the lower inner surface 24b and the horizontal plane is larger than the inclination angle θ1 between the lower inner surface 24b and the horizontal plane of the outer surface of the storage container body 11 of the underfloor storage cabinet 1, it is possible to make the inner surfaces 24 of the fixed side insulating member 2A and the movable side insulating member 2B and the outer surface of the storage container body 11 of the underfloor storage cabinet 1 line contact within the horizontal plane (line contact with a thin line width, specifically, a line width of about 1 mm to 10 mm). This allows the storage container body 11 to be easily attached and detached during installation and inspection while maintaining heat insulating performance.

[0021] Incidentally, there is a trade-off between the contact area between the inner surfaces 24 of the fixed side insulating member 2A and the movable side insulating member 2B and the outer surface of the storage container body 11 of the underfloor storage cabinet 1, the insulating performance, and the ease of attachment and detachment of the storage container body 11; increasing the contact area improves the insulating performance and decreases the ease of attachment and detachment, and decreasing the contact area reduces the insulating performance and increases the ease of attachment and detachment. In consideration of this relationship, when this thermal insulation structure for an underfloor structure is applied to an underfloor inspection hatch 1A as shown in FIG. 6, the angle of inclination θa between the inner surface 24 of the fixed-side insulating member 2A and the movable-side insulating member 2B and the horizontal plane of the upper inner surface 24a is made smaller than the angle of inclination θ1 between the outer surface of the inner cover insulating material 11A (which in this embodiment is designed to be able to be used in common with the inner cover 12 of the underfloor storage cabinet 1) as the central member of the underfloor inspection hatch 1A, thereby The inner surfaces 24 of the fixed side insulating member 2A and the movable side insulating member 2B are designed to come into contact with the outer surface of the central member of the object while gradually approaching each other, and the shape is such that the inclination angle θb between the lower inner surface 24b and the horizontal plane is the same as the inclination angle θ1 between the outer surface of the middle lid insulating material 11A of the underfloor inspection hatch 1A and the horizontal plane, so that the inner surfaces 24 of the fixed side insulating member 2A and the movable side insulating member 2B and the outer surface of the middle lid insulating material 11A of the underfloor inspection hatch 1A are in surface contact (surface contact over a wide width, specifically, a width of 20 mm or more, preferably 30 mm or more). This allows the heat insulating performance to be improved.

[0022] Furthermore, in order to improve the heat insulating performance, an inner lid 12 made of a heat insulating material can be provided, or a heat insulating material can be provided on the lid portion 13 of the underfloor storage shed 1 that forms the floor surface.

[0023] As shown in Figure 1, this insulating member 2 is arranged to surround the outer periphery of the storage container body 11 of the underfloor storage cabinet 1, and in this case, the fixed side insulating member 2A is fixed by driving a coarse thread 4 as a screw into the floor joist J, which is the floor structural member F, in the diagonal direction of the opening H, via an anchor member 3, into the casting surface 25 of the fixed side insulating member 2A. This allows the fixed-side heat-insulating member 2A to be attached to the floor joists J, which are the floor structural members F, easily and with high accuracy.

[0024] The insulating member 2 is composed of a fixed-side insulating member 2A that is fixedly attached to the floor joists J, which are floor structural members F, and a movable-side insulating member 2B that is supported immovably between the fixed-side insulating member 2A and the storage container body 11 by fitting its end into the fixed-side insulating member 2A, thereby increasing the height dimension of the insulating member 2 and improving its insulating performance. Then, with the storage container body 11 removed, the movable-side insulating member 2B of the divided insulating member 2 is moved horizontally (in the direction of the arrow X in FIG. 1(c)) toward the center of the opening H of the underfloor storage cabinet 1, and separated from the fixed-side insulating member 2A, thereby forming a portion without an insulating structure consisting of the movable-side insulating member 2B, which does not become an obstacle when a person enters under the floor from the opening H of the underfloor storage cabinet 1 for inspection, and the underfloor storage cabinet 1 can also be used as an underfloor inspection hatch. In this case, the movable-side insulating members 2B of the insulating members 2 arranged on each of the four sides of the opening H of the underfloor storage 1 can be detached from the fixed-side insulating members 2A, so that the direction that does not obstruct a person entering under the floor from the opening H for inspection is not limited to a specific direction, and inspection work can be carried out smoothly.

[0025] The above describes the insulating structure of the underfloor structure of the present invention based on its embodiments, but the present invention is not limited to the configuration described in the above embodiments, and the configuration can be changed as appropriate within the scope of the spirit of the present invention. [Industrial Applicability]

[0026] The insulating structure of the underfloor structure of the present invention has the characteristics of increasing the height dimension of the insulating member, improving insulating performance, not being limited to a specific direction so as not to hinder people from entering under the floor through the opening for inspection, and being able to precisely and easily attach the fixed side insulating member to the floor structure member, making it suitable for use as an underfloor storage shed or underfloor inspection hatch. [Explanation of symbols]

[0027] F. Floor structural members F1 outer frame H opening J joist 1 Underfloor storage (underfloor structure) 1A Underfloor inspection hatch (underfloor structure) 11 Storage container body (central member) 11A Inner lid insulation material (core component) 12 Inner lid 13 Lid 2. Heat insulating materials 2A Fixed side insulation member 2B Movable side insulation member 21a Mating part 21b Fitting part 22 recess 23 Edge 23a Notch 24 Inner surface 25 Pouring surface 3 Anchor members 4 Coarse thread (screw)

Claims

1. In this insulation structure for an underfloor structure, insulation members are arranged to surround the outer periphery of a rectangular opening in the underfloor structure, and a central member of the underfloor structure is installed inside the insulation members, characterized in that the insulation members are divided into fixed-side insulation members that are arranged at each of the four corners of the opening and are attached to the floor structure members by driving screws, and movable-side insulation members that are arranged at each of the four sides of the opening and are supported immovably between the fixed-side insulation member and the central member by fitting their ends into the fixed-side insulation members, and can be detached from the fixed-side insulation member by moving them horizontally toward the center of the opening of the underfloor structure with the central member removed.

2. 2. The thermal insulation structure for an underfloor structure according to claim 1, wherein the fixed-side insulating member is fixed to the floor structural member by driving a screw diagonally into the opening.

3. An insulating structure for an underfloor structure as described in claim 1 or 2, characterized in that the angle of inclination of the inner surfaces of the fixed side insulating member and the movable side insulating member, made between the horizontal plane and the horizontal plane of the inner surface of the upper part, is smaller than the angle of inclination of the inner surface of the central member of the underfloor structure, so that they come into contact with the outer surface of the central member of the underfloor structure while gradually approaching each other, and the contact portions of the inner surfaces of the fixed side insulating member and the movable side insulating member and the outer surface of the central member of the underfloor structure are in line contact within the horizontal plane.

4. An insulating structure for an underfloor structure as described in claim 1 or 2, characterized in that the angle of inclination of the inner surfaces of the fixed side insulating member and the movable side insulating member, made between the horizontal plane of the inner surface of the upper part and the outer surface of the central member of the underfloor structure, is smaller than the angle of inclination of the inner surface of the fixed side insulating member and the movable side insulating member with the horizontal plane of the outer surface of the central member of the underfloor structure, so that they come into contact with the outer surface of the central member of the underfloor structure while gradually approaching each other, and the contact portions of the inner surfaces of the fixed side insulating member and the movable side insulating member and the outer surface of the central member of the underfloor structure are in surface contact.

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