JPH11308731A - Heat insulating sheet material for concrete box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make surely adiabatic the joining portions of the main body of a concrete box to its back plate, by providing stickily first sheet materials on the outer surfaces of the sidewalls of its main body, and by providing stickily a second sheet material on the outer surface of its back plate, and further, by providing stickily third sheet materials on the joining portions of its main body to its back plate. SOLUTION: Inserting nails 22 into nail inserting holes 5a provided in respective attaching seat portions 5 of a box main body 1, the nails 22 are driven into a molding frame 23 to fasten the box main body 1 to the predetermined portion of the molding frame 23. Then, separating respective first, second and third sheet materials S1 , S2 , S3 , from each other by the respective separating lines of an adiabatic sheet material, the first sheet materials S1 are provided stickily on the outer surfaces of the respective sidewalls of the box main body 1. Then, the second sheet material S2 is provided sickily on the outer surface of a back plate 2 of another body. Further, the third sheet materials S3 are provided stickily on the joining portions of the box main body 1 to the back plate 2 along the periphery of the box main body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating sheet material for a concrete box having a structure in which a top opening of a box body is closed by a back plate.

[0002]

2. Description of the Related Art In general, in a wiring box, dew condensation easily occurs in the box due to a temperature difference between the inside and outside of the box, and the dew condensation causes poor insulation in the box and stains on the interior wall material surface. . In order to prevent this dew condensation, there is a box which is used by attaching a heat insulating material to an outer wall. As this heat insulating material, a material formed in a box shape in advance (Japanese Patent Laid-Open No.
-175908), or a sheet-like sheet with an expanded box (Japanese Utility Model Laid-Open No. 3-77222).

On the other hand, there is a box called a concrete box (hereinafter simply referred to as a "box") comprising a box main body and a back plate closing an upper surface opening thereof (JIS C 8336). In this box, since it is necessary to perform a connection operation of a connector or the like with the back plate removed, the box-shaped or sheet-shaped heat insulating material cannot be used, and condensation cannot be prevented.

[0004]

SUMMARY OF THE INVENTION The present invention can be easily attached to the above-mentioned box provided with a back plate, and furthermore, the connection between the box body and the back plate is reliably insulated so that dew condensation can be achieved. It is an object to provide a heat insulating sheet material capable of preventing the occurrence of the heat.

[0005]

According to the present invention, there is provided a heat insulating sheet material for a concrete box in which an upper surface opening of a box body is closed by a back plate, wherein a side wall of the box body is provided. A first sheet material attached to the outer surface along a circumferential direction thereof, a second sheet material attached to the outer surface of the back plate, and a peripheral portion provided at a joint between the box body and the back plate. It is characterized by comprising three portions with a third sheet material stuck along the direction.

Since the heat insulating sheet material according to the present invention has the above-described structure, the heat insulating sheet material can be stuck on the entire outer peripheral surface of the box having the back plate, and the heat can be reliably insulated even at the junction. Dew condensation on the box can be reliably prevented.

In this case, if an adhesive layer is provided on the back surface side of each sheet material, the sheet material can be securely attached to each part of the box. Further, if the first to third sheet materials are formed of a continuous and integral sheet material, and each of the first to third sheet materials can be separated and used, the handling of the heat insulating sheet material is simplified and at the same time, one set is formed. Since three different sheet materials are integrated, loss of each sheet material can be prevented.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to examples. FIG. 1 is a perspective view of a box B on which a heat insulating sheet material S according to the present invention is stuck all around, FIG. 2 is a plan view thereof, and FIG. 3 is a cross-sectional view taken along line XX of FIG. FIG. 4 is a cross-sectional view taken along line YY of FIG. 2, FIG. 5 is a perspective view of the heat insulating sheet material S according to the present invention with the back surface facing the front side, and FIG. Insulation sheet material S
FIG. 7 is a plan view of the heat insulating sheet material S according to the present invention.
FIG. 5 is an exploded perspective view of a box B to which is attached. At first,
The schematic configuration of the box B will be described. The box B includes a box body 1 having a rectangular frame shape with upper and lower surfaces opened, and a separate back plate 2 for closing an opening on the upper surface side of the box body 1. . A knockout 4 is provided on each side wall 3 of the box body 1, and a mounting seat portion 5 is projected from a lower end portion of a pair of opposing side walls 3 along a diagonal direction thereof. The mounting surface 6 is provided with a screw hole 7 at each corner of the mounting surface 6.

On the other hand, the back plate 2 is formed of a square plate corresponding to the size of the box main body 1, and has a plurality of knockouts 8 provided at the center thereof, and each corner has an angle of approximately 45 ° with each side. In this configuration, projecting portions 9 projecting in the direction intersecting with each other are provided, and each of the projecting portions 9 is provided with an elongated screw insertion hole 11 along the projecting direction. A circular hole having an inner diameter larger than the width of the elongated hole is connected to one end of the elongated screw insertion hole 11.

Next, the heat insulating sheet material S according to the present invention will be described. This heat insulating sheet material S is molded from a flexible material such as foamed polyethylene, and is attached to the outer surface of each side wall 3 of the box body 1 along the circumferential direction as shown in FIGS. the first sheet S ₁ to be the second sheet material S to be affixed to the outer surface of the back plate 2
_2, in a state of attaching the back plate 2 on the mounting surface 6 of the box body 1, the junction of the two, consists of three parts of the third sheet S ₃ is affixed along the circumferential direction Is done. The first sheet material S ₁ has a band shape, and a notch portion 12 cut out in a groove shape is provided at a portion corresponding to each mounting seat portion 5 of the box body 1.

The second sheet material S ₂ has a square shape corresponding to the size of the back plate 2, and is formed integrally with the first sheet material S ₁ via a separation line 13, and is provided at each corner portion. Is provided with a notch 14 along a diagonal direction. The notch 14 is provided to avoid a buffer with a screw 26 described later for fixing the back plate 2 to the box body 1. The third sheet material S ₃ is
The first sheet material S ₁ has a length substantially equal to that of the first sheet material S ₁ , but has a width much smaller than that of the first sheet material S _1. possible are tapered cut to its said first sheet S ₁ through the longitudinal direction of the connecting portion 15 provided at a substantially central portion integrally connected, your regular intervals on the end face along the longitudinal direction thereof In addition, a plurality of covering portions 16 are provided. The covering portion 16 is a portion that covers the projecting portion 9 provided at each corner of the back plate 2. In addition, the connection portion 15
When the connection portion between the first sheet S _1, the separating line 17 is provided.

The first, second and third sheet materials S ₁ , S ₂ ,
On the back surface of the heat insulating sheet S composed of three parts S _3, and double-sided tape 18 is attached, the corresponding portion of that with the release paper 18a is peeled off, the box B via a double-sided tape 18 It is to be pasted on. The first and second sheet materials S ₁ and S ₂ are provided with knockouts 19 and 21 at portions corresponding to the knockouts 4 and 8 of the box body 1 and the back plate 2, respectively.

In order to attach the heat insulating sheet material S to the entire outer peripheral surface of the box B and perform a connection operation of a connector or the like, the following is performed. First, the nail 22 is inserted into the nail insertion hole 5a (see FIG. 3) provided in each mounting seat 5 of the box body 1.
The box body 1 is fixed to a predetermined position of the formwork 23 by driving the nail 22 into the formwork 23.
By the respective separation lines 13 and 17 of the heat insulating sheet material S, first,
The second and third sheet materials S ₁ , S ₂ , and S ₃ are separated from each other, and as shown in FIG. 8, the sheet materials S ₁ , S ₂ , and S ₃ are placed on the outer surface of each side wall 3 of the box body 1 fixed to the formwork 23. to affixed the first sheet S ₁ along the circumferential direction. When affixed to the first sheet S ₁ to the outer surface of each side wall 3 of the box body 1, as shown in FIG. 10, the notch portion 1 of the first sheet S ₁
2 is made to correspond to the mounting seat portion 5 of the box body 1 so that the mounting seat portion 5 is inserted into the cutout portion 12. Thus, interference with the mounting seat portion 5 and the first sheet S ₁ box body 1 is avoided. In this state, the knockouts 4 and 19 provided on the box body 1, the first sheet material S _1, and the side walls 3 of the box body 1 are punched out, and the box body 1 on which the first sheet material S ₁ is stuck is formed. Knockout holes 24 (see FIG. 10) are formed in each side wall 3. And
Using these knockout holes 24, the connectors 25
Connection work or various wiring work. In FIG. 8, 10 and 11, 27 denotes a first joining line of the sheet material S _1.

Next, as shown in FIGS. 9 and 10,
The second sheet material S ₂ is attached to the outer surface of the separate back plate 2, and the back plate 2 is placed on the mounting surface 6, which is the upper end surface of the box body 1, and provided on each of the protrusions 9 of the back plate 2. The screw 26 is inserted into the screw insertion hole 11
When screwed into the screw under the hole 7 provided the bis 26 on the mounting surface 6 of the box body 1, as shown in FIG. 11, the box body in which the first sheet S ₁ is being affixed to the outer surface of each side wall 3 1 is closed by the back plate 2. In a state where the second sheet material S ₂ is stuck on the outer surface of the back plate 2, the head of the screw 26 is exposed at each cutout portion 14 of the second sheet material S ₂ , Each protruding portion 9 provided in a corner portion and the box body 1
And the back plate 2 are exposed over the entire length in the circumferential direction.

[0015] Next, as shown in FIG. 12, at the junction of the box body 1 and the back plate 2, when affixed to the third sheet S ₃ along the circumferential direction, has been a exposed state The joining portion is covered with the third sheet material S ₃ , and thereafter, each covering portion 16 provided on the third sheet material S ₃ is bent inward and attached to the surface of the second sheet material S _2. Then, each projecting portion 9 of the back plate 2 is covered with each covering portion 16.

As a result, as shown in FIGS. 1 to 4, the entire outer peripheral surfaces of the box body 1 and the back plate 2 are covered with the heat-insulating sheet material S divided into three parts. The exposed part is completely gone. In FIGS. 1 and 2, reference numeral 28 denotes a third sheet material S ₃
Shows the joining line of.

The heat insulating sheet material S of the above embodiment has a double-sided tape 18 adhered to the back surface thereof.
Although there is an advantage that the work of attaching the sheet material to the box B is easy, an adhesive may be applied to the back surface of the sheet material at the construction site and used. Further, the heat insulating sheet material S is formed of a continuous and integral sheet material as a whole, and the first, second, and third sheet materials S ₁ , S ₁ ,
Since S ₂ and S ₃ are separated and used at the separation lines 13 and 17, three different parts are integrated until immediately before construction, preventing loss of each part of the heat insulating sheet material. Although there is an advantage that can be made, three different parts of the insulating sheet material may be made independently.

[0018]

The heat-insulating sheet material according to the present invention comprises first, second and third parts respectively attached to the outer surface of the side wall of the box body, the outer surface of the back plate and the joint between the box body and the back plate. It is made of sheet material, and for each part of the box provided with the back plate, to paste the corresponding sheet material corresponding thereto, and to paste the heat insulating sheet material on the entire outer peripheral surface of the box. In addition, it is possible to reliably insulate even the above-mentioned joint, and to surely prevent dew condensation in the box. In addition, in a box having a separate back plate and having a step-shaped joint between the box body and the box body, in order to stick each sheet material divided correspondingly to each part, In addition, the work of attaching the sheet material can be performed easily and quickly, and the work efficiency can be improved.

In this case, if an adhesive layer is provided on the back side of each sheet material, the sheet material can be quickly attached to each part of the box, and the construction efficiency for attaching the sheet material is increased. . In addition, if the first to third sheet materials are formed of a continuous and integral sheet material and each of them is separated and made usable, three different parts are integrated until immediately before construction, The handling of the heat insulating sheet material is simplified, and at the same time, the individual sheet materials can be prevented from being lost.

[Brief description of the drawings]

FIG. 1 is a perspective view of a box B on which a heat insulating sheet material S according to the present invention is stuck all around.

FIG. 2 is a plan view of the same.

FIG. 3 is a sectional view taken along line XX of FIG. 2;

FIG. 4 is a sectional view taken along line YY of FIG. 2;

FIG. 5 is a perspective view showing a state in which the back surface of the heat insulating sheet material S according to the present invention faces the front side.

FIG. 6 is a plan view of the heat insulating sheet material S.

FIG. 7 is an exploded perspective view of a box B to which the heat insulating sheet material S according to the present invention is attached.

8 is a diagram showing a first step of affixed the sheet S ₁ on the outer surface of each side wall 3 of the box body 1.

FIG. 9 is a side view showing a step of closing the upper opening of the box main body 1 having the first sheet material S ₁ adhered to the outer peripheral surface thereof with the back plate 2 having the second sheet material S ₂ adhered to the outer surface. is there.

FIG. 10 is a perspective view of the same.

FIG. 11 shows a state in which the upper surface opening of the box body 1 on which the first sheet material S ₁ is adhered on the outer peripheral surface is closed by the back plate 2 on which the second sheet material S ₂ is adhered on the outer surface. It is a perspective view.

12 is a perspective view showing the step of affixed a third sheet S ₃ at the junction of the box body 1 and the back plate 2.

[Explanation of symbols]

B: Box S: heat insulating sheet S _1: the first sheet material S _2: second sheet material S _3: third sheet member 1: the box body 2: the back plate 5: the box body of the mounting seat portion 9: backplate Projecting portion (attached portion) 12: Notch portion of first sheet material 16: Cover portion of third sheet material 18: Double-sided tape

Claims (5)

[Claims] 1. A heat insulating sheet material for a concrete box having a structure in which an upper surface opening of a box body is closed by a back plate, wherein the heat insulating sheet material is attached to an outer surface of a side wall of the box body along a circumferential direction thereof. 1 sheet material, a second sheet material attached to an outer surface of the back plate, and a joint between the box body and the back plate,
And a third sheet material attached along the circumferential direction thereof, comprising: a heat insulating sheet material for a concrete box. 2. The heat insulating sheet material for a concrete box according to claim 1, wherein each of the first to third sheet materials has an adhesive layer on a back surface thereof. 3. The concrete according to claim 1, wherein each of the first to third sheet materials is formed by a continuous and integral sheet material, and each is used separately. Insulation sheet material for boxes. 4. The first sheet material is provided with a notch for exposing a mounting seat protruding outside a side wall of the box body. A heat insulating sheet material for a concrete box as described. 5. The concrete box for a concrete box according to claim 1, wherein the third sheet material has a covering portion for covering the attached portion provided on the back plate. Insulation sheet material.