JP2001193274A - Ceiling inspection opening device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate manufacture and handling of a vacuum heat insulation material for interior finishing on a heat insulation cover by enhancing the heat insulation of the heat insulation cover covering upward of an inspection cover. SOLUTION: A ceiling inspection opening device arranges the heat insulation cover 4 upward of the inspection cover 14 opening and closing an opening part 1 provided on a ceiling. The heat insulation cover 4 is provided with a cover body 9 comprising a resin foaming body and a vacuum heat insulation material 60 provided in the cover body 9. The vacuum heat insulation material 60 packages a foaming core material 61 by a packaging material 62 whose inside is evacuated, and the outer peripheral part 62a of the packaging material 62 is sealed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling inspection port device.

[0002]

2. Description of the Related Art In a house structure, a ceiling inspection port is generally provided in a ceiling portion of a living space or a closet space, for example. This ceiling inspection opening is used as an entrance for inspection work behind the ceiling, and is closed with an inspection lid when not in use. However, when the entire house is not airtight, the ceiling inspection opening is used. Outside air enters the room through a gap between the door and the inspection lid, and gives a feeling of discomfort to a person in the room. If the gap between the ceiling inspection port and the inspection lid is to be completely eliminated, there is a problem that the cost is high and the inspection lid is difficult to attach and detach.

As a solution to this problem, as shown in FIG. 8, for example, a heat insulating lid 4 ′ is arranged above the inspection lid 14, and a flange 50 provided on the heat insulating lid 4 ′ is attached to the opening 1 of the ceiling 16. What is mounted on the upper end surface of the opening frame 2 'is known.
Reference numeral 51 in the drawing denotes a spacer.

[0004]

However, in the structure of the conventional ceiling inspection port, the insulation lid 4 'having a single-layer structure is merely disposed above the inspection lid 14, and furthermore, the insulation lid 4' is additionally provided. Since the rim portion 50 ′ is merely placed on the upper end surface of the opening frame 2 ′, the heat insulating lid 4 ′ easily shifts and moves with respect to the opening frame 2 due to vibration or the like, and the airtightness is impaired. There is a problem that the heat insulation effect is reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional example. It is an object of the present invention to improve the elasticity of a heat insulating cover that covers an upper part of an inspection cover and to provide a vacuum inside a heat insulating cover. An object of the present invention is to provide a ceiling inspection port device capable of facilitating production of a heat insulating material and easy handling.

[0006]

According to the present invention, there is provided a ceiling inspection opening device in which a heat insulating lid is disposed above an inspection lid for opening and closing an opening provided in a ceiling. In the above, the heat insulating lid 4 includes a lid 9 made of a resin foam, and a vacuum heat insulating material 60 provided in the lid 9.
The vacuum heat insulating material 60 is characterized in that the foamed core material 61 is packed with a packing material 62, the inside of the packing material 62 is evacuated, and the outer peripheral portion 62a of the packing material 62 is sealed. With such a configuration, it is possible to eliminate air (or other gas) which is a heat medium existing in a large number of cell holes in the foamed core material 61 by evacuating the inside of the packing material 62, and the foamed core material 61. The heat insulation performance of itself can be improved. In addition, after packing the foamed core material 61 in a vacuum,
By sealing the outer peripheral portion 62a of the foam core material 61, a vacuum state of the foam core material 61 can be easily secured, and the vacuum heat insulating material 6
0 can be easily manufactured.

The lid 9 is vertically divided into two parts, and a vacuum heat insulating material 60 is provided inside a hollow portion 10 formed between the upper lid 9a and the lower lid 9b. Preferably, in this case, the vacuum heat insulating material 60 has a three-layer heat insulating structure sandwiched between the upper lid 9a and the lower lid 9b, and the heat insulating performance of the heat insulating lid 4 can be further improved. In addition, since the vacuum heat insulating material 60 is sealed with the packing material 62, the handling is easy, and the interior work on the lid 9 is also easy.

It is preferable that the cover frame 3 of the heat insulating cover 4 is attached to the opening frame 2 and that a receiving portion 6 is provided on the inner surface of the cover frame 3 for receiving the outer surface of the cover 9 having the vacuum heat insulating material 60 therein. In this case, the adhesion between the lid frame 3 and the lid 9 is increased, and the support strength of the lid 9 with respect to the lid frame 3 can be improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings.

As shown in FIG. 1, the ceiling inspection port device is configured by disposing a heat insulating lid 4 above an inspection lid 14 for opening and closing the opening 1 provided on the ceiling. The lid frame 3 of the heat insulating lid 4 is attached to the opening frame 2. The lid frame 3 is formed, for example, in a substantially quadrangular cylindrical shape in plan view, and a flange portion 20 having a thickness in the vertical direction is protruded from an upper portion of an outer surface thereof,
With the flange 20 supported on the upper end of the aluminum outer frame 21, the lower end of the lid frame 3 can be supported on the upper surface of the wooden frame 28 constituting the opening frame 2. A receiving portion 6 for supporting the heat insulating lid 4 is provided in a lower part of the inner side surface of the lid frame 3 so as to project inward. In addition, 17 in FIG. 1 is a ceiling material,
Numeral 18 is a field edge.

The heat-insulating lid 4 includes a lid 9 and a vacuum heat-insulating material 60 provided inside the lid 9.

The lid 9 is made of a heat insulating material such as styrene foam. The lid 9 of the present example includes a thin upper lid 9a and a thick lower lid 9b that are divided into two parts in the vertical direction.

As shown in FIG. 3, a flange 23 projects from the outer periphery of the upper lid 9a. The upper outer peripheral surface 23a of the collar portion 23 is formed in a curved shape. For example, when the heat insulating lid 4 is inclined and fitted into the lid frame 3, the flange portion 23 of the upper lid 9 is hardly caught by the lid frame 3. And can be fitted smoothly.

The outer surface 4a of the lower lid 9b is formed in a substantially inverted trapezoidal cross section so as to gradually inward as it goes downward. It is easy to fit from. A cutout step 5 supported by the receiving portion 6 of the cover frame 3 is formed on the outer surface 4a of the lower cover 9b. As shown in FIG. 6, a dug portion 63 having a substantially U-shaped section is formed inside the lower lid 9 b by dug the upper surface at a predetermined depth to form a hollow portion 10. . The dug portion 63 is formed deep enough to accommodate the vacuum heat insulating material 60. Further lower lid 9
A dug-shaped handle portion 11 is provided on the lower surface of b so as not to protrude from the lower surface of the heat-insulating lid 4.

As shown in FIG. 2, the vacuum heat insulating material 60 covers both sides of the foamed core material 61 with two films as the packing material 62, and leaves one side of the outer peripheral portion 62a of the film in the vacuum packing machine. It is formed by heat-sealing, evacuating the inside of the film, and finally heat-sealing one side. As the vacuum heat insulating material 60, for example, EPS (performance: thermal conductivity is 0.0080 W / m) manufactured by Matsushita Refrigeration Co., Ltd.
K (24 ° C.), internal pressure: 66.7 Pa or less). The vacuum heat insulating material 60 is, for example, 52 mm
It is formed in a flat plate shape having a thickness B of about ± 2 mm and a width A of about 415 ± 3 mm. The width dimension C of the film before evacuation is about 500 mm ± 2 mm, and the width D of the heat seal is about 10 mm ±. It is about 2 mm, but is not limited to these values.

FIG. 7 shows an example of a procedure for installing the heat insulating lid 4. FIG. 7 (a) provides an opening 1 in a ceiling base material,
A case where a wooden frame 28 and a suspension tree 29 are arranged around the opening 1 and these are fixed to beams or the like is shown. And FIG.
As shown in (b), the heat-insulating lid 4 in which the vacuum heat-insulating material 60 is installed is lifted from the opening 1 to the ceiling and temporarily placed on the ceiling, and then, as shown in FIG. The frame 3 is set in the opening 1 and fixed to the wooden frame 28. Then, FIG.
As shown in (d), the heat-insulating lid 4 placed above the ceiling is replaced with the lid frame 3.
It is set inside, and as shown in FIG. 1, the inspection lid 14 is arranged below the heat insulating lid 4.

The heat insulating cover 4 has a vacuum heat insulating material 6 inside.
The heat insulation performance of the heat-insulating lid 4 can be enhanced by installing the heat-insulating cover 4. That is, air (or other gas) as a heat medium is generally present in a large number of cell holes in the resin foam constituting the foam core material 61, and the heat medium is eliminated by evacuating the air. The heat insulation performance of the resin foam itself can be improved. Moreover,
By using two films as the packing material 62 for the foamed core material 61 and heat sealing the outer peripheral portion 62a, a vacuum state can be easily secured, and the vacuum heat insulating material 60 can be easily manufactured. Since it is packed in the packing material 62, it is easy to handle and the interior work on the lid 9 is also easy.

The heat insulating lid 4 is composed of upper and lower divided lids 9a and 9b, and a dug portion 63 which is a hollow portion 10 is formed between the lids 9a and 9b to form the vacuum heat insulating material 60. Since it was made to be installed, the vacuum heat insulating material 60 is placed on the upper lid 9a.
And a three-layer heat insulating structure sandwiched by the lower lid 9b and the heat insulating performance of the heat insulating lid 4 can be further improved.

Further, a receiving portion 6 provided on the inner peripheral portion of the lid frame 3
Supports the notch step 5 provided on the outer peripheral portion of the lower lid 9b, so that the support strength of the heat insulating lid 4 by the lid frame 3 is increased and the gap between the lid frame 3 and the heat insulating lid 4 is increased. A gap can be reliably prevented from occurring, and there is no fear that the heat-insulating lid 4 will come off the lid frame 3 after construction, and the adhesion can be improved. A concave portion and a convex portion may be provided on the contact surface between the receiving portion 6 and the notch step portion 5 so as to fit each other. Even if it is added, it is possible to reliably prevent the heat-insulating lid 4 from being lifted up with respect to the lid frame 3 by the fitting of the convex part and the concave part, and the receiving part 6
Even if there is a slight dimensional error between the notch and the notch step 5, the gap caused by the dimensional error can be absorbed by the fitting of the concave portion and the convex portion, and high heat insulation and airtightness can be maintained. Become. Further, a soft packing or the like may be interposed in the gap between the receiving portion 6 and the notch step portion 5, and in this case, the sealing property between the heat insulating lid 4 and the lid frame 3 can be further improved.

In the above-described embodiment, the split-type heat-insulating lid 4 is used. However, a single-type heat-insulating lid 4 may be used.

[0021]

As described above, according to the first aspect of the present invention, the inspection cover for opening and closing the opening provided on the ceiling is provided above the inspection cover.
In the ceiling inspection port device in which the heat insulating lid is arranged, the heat insulating lid includes a lid body made of a resin foam, and a vacuum heat insulating material provided in the lid body, and the vacuum heat insulating material packs a foam core material with a packing material. In addition, since the inside of the packing material is evacuated and the outer periphery of the packing material is sealed, the heating medium present in the many pores in the foamed core material is formed by evacuating the packing material. By eliminating the air (or other gas), the heat insulation performance of the foamed core material itself can be improved, and as a result, the heat insulation of the entire heat insulation lid can be improved. Moreover, by sealing the outer periphery of the packing material for vacuum packing the foam core material, a vacuum state can be easily secured,
The manufacture of the vacuum insulation material can be facilitated,
By sealing with a packing material, the handleability is also improved, and the interior work inside the lid is facilitated.

According to a second aspect of the present invention, in addition to the effect of the first aspect, the lid is divided into upper and lower parts and a hollow formed between the upper lid and the lower lid. Since the vacuum insulation material is installed in the part, the vacuum insulation material becomes a three-layer insulation structure sandwiched between the upper lid and the lower lid,
The heat insulating performance of the heat insulating lid can be further improved, and the vacuum heat insulating material can be easily incorporated into the inside of the lid, so that the assembling property can be improved.

According to a third aspect of the present invention, in addition to the effects of the first and second aspects, the lid frame of the heat insulating lid is attached to the opening frame, and a vacuum heat insulating material is provided on the inner surface of the lid frame. Since the receiving portion for receiving the outer surface of the lid is provided, the adhesion between the lid frame and the lid is increased, the heat insulation effect can be further enhanced, and the support strength of the lid to the lid frame can be improved. It is possible to improve workability.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of an embodiment of the present invention.

2A and 2B show a vacuum heat insulating material of the above, wherein FIG. 2A is a partially broken plan view before evacuation, FIG. 2B is a side sectional view after evacuation, and FIG. 2C is a side view.

3A and 3B show an upper lid member of the above, and FIG.
(B) is a side view, and (c) is a bottom view.

FIG. 4 is a bottom view of the lower lid of the above.

5 (a) and 5 (b) are a cross-sectional view and a side view of a lower lid of the above.

FIG. 6A is a cross-sectional view showing a state in which the above vacuum heat insulating material is installed, and FIG. 6B is a side view.

FIGS. 7A to 7D are explanatory views showing an example of a construction procedure according to the embodiment.

FIG. 8 is a conventional sectional view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Opening part 2 Opening frame 3 Lid frame 4 Insulating lid 5 Notch step part 6 Receiving part 9 Lid 9a Upper lid 9b Lower lid 10 Hollow part 14 Inspection lid 60 Vacuum insulating material 61 Foam core material 62 Packing material 62a outer periphery

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kenichi Hosokawa 1048 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Works Co., Ltd. F-term (reference) 2E001 DD01 FA14 GA12 GA82 HF11 JD01 KA05 LA10

Claims (3)

[Claims] 1. A ceiling inspection opening device in which a heat insulating lid is disposed above an inspection lid for opening and closing an opening provided on a ceiling, wherein the heat insulating lid is provided in a lid body made of a resin foam and in the lid body. A vacuum heat insulating material, wherein the vacuum heat insulating material is formed by packing a foam core material with a packing material, evacuating the inside of the packing material, and sealing an outer peripheral portion of the packing material. Inspection port device. 2. The ceiling inspection, wherein the lid is divided into upper and lower parts, and a vacuum heat insulating material is provided in a hollow portion formed between the upper lid and the lower lid. Mouth device. 3. The heat insulating lid according to claim 1, wherein the lid frame is attached to the opening frame, and a receiving portion is provided on an inner surface of the lid frame for receiving an outer surface of the lid body provided with the vacuum heat insulating material. The ceiling inspection port device according to claim 2.