JPH102101A - Airtight structure of the lid of the housing opening - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an airtight structure of a lid of a housing opening which is free from intrusion of cold air in winter. SOLUTION: An opening is provided in a wall plate 1 of a house, a frame 2 is provided along the periphery of the opening of the wall plate 1, and a flange 21 for receiving a lid is provided in the frame 2; The portion 21 is provided with a concave portion, and the elastic airtight material 5 is fitted into the concave portion. The peripheral edge of the lid 3 is in close contact with the elastic airtight material 5 when the opening is covered.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airtight structure of a lid of a housing opening provided on a wall plate such as a floor plate or a ceiling plate of a house.

[0002]

2. Description of the Related Art Conventionally, for example, as described in Japanese Utility Model Laid-Open No. 4-95942, an opening for inspection provided in a wall plate of a washroom is covered with a lid to close the opening. It has been known. It is also known that a lid is provided on an opening of a floor plate or the like, as in the case of storage under the floor, to close the opening.

As shown in FIG. 2, a frame 2 having a Z-shaped cross section made of aluminum is provided on the periphery of the opening of the floor plate 1 as shown in FIG.
On the other hand, there is a type in which a lid 3 having a groove 4 having a cross-sectional shape attached to the periphery is placed on the flange 21 of the frame 2 at the opening of the floor plate 1 to close the opening.

[0004] Alternatively, as shown in FIG. 3, the lid 3 is attached to the upper end of a rising piece 22 erected at the tip of a flange 21 of a frame 2 having a Z-shaped cross section attached to the periphery of the opening of the floor panel 1. There is a structure in which a peripheral frame 4 is placed.

[0005]

However, the above-mentioned conventional closed structure of the opening is inferior in airtightness, so that it is impossible to prevent cold air from entering in winter. In particular, when the ventilation fan is operated, the invasion of cold air appears remarkably.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to solve the conventional problems and to reduce the possibility of intrusion of cold air in winter. An object of the present invention is to provide an airtight structure for a lid of an opening.

[0007]

According to the present invention, an airtight structure of a lid of a housing opening has an opening provided in a wall plate of a house, and a frame provided along a peripheral edge of the opening of the wall plate. A flange is provided on the frame for receiving the lid, a concave portion is provided on the flange portion, an elastic airtight material is fitted into the concave portion, and a peripheral edge of the lid is brought into close contact with the elastic airtight material when covering the opening. It is characterized by having.

In the present invention, the wall plate may be any wall or plate provided with an opening in a house, and is not particularly limited.
For example, floor boards, ceiling boards, wall boards, and the like, and as the material thereof, besides wood, synthetic resins such as hard vinyl chloride resin, polycarbonate, and FRP, and metals such as stainless steel and aluminum are used alone or in appropriate combination. Can be used.

In the present invention, the elastic airtight material may be any material as long as it can maintain airtightness by being interposed between the peripheral edge of the opening and the peripheral edge of the lid in the wall plate. Not particularly limited, for example, natural or synthetic rubber or vinyl chloride resin, polyethylene,
Non-foamed or foamed synthetic resins such as polypropylene and polyurethane can be suitably used.

In the airtight structure of the lid of the housing opening according to the present invention, an opening is provided in the wall plate of the house, and a frame is provided along the periphery of the opening of the wall plate. The body is provided with a flange for receiving a lid, and the flange is provided with a concave portion. An elastic airtight material is fitted into the concave portion, and the peripheral edge of the lid is in close contact with the elastic airtight material when the opening is covered. Therefore, the opening of the wall plate is hermetically closed by the lid.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an example of an airtight structure of a lid of a housing opening according to the present invention. In FIG. 1, reference numeral 1 denotes a wall plate, specifically, a floor plate. The floor plate 1 is provided with an opening to a storage (not shown) below the floor plate 1. A Z-shaped aluminum frame 2 is attached. A rising piece 22 is erected at the end of the flange 21 of the frame 2, and the main body rising wall 23, the flange 21, and the rising piece 22 of the frame 2 are provided.
An elastic airtight material 5 made of a polyurethane foam is inserted and fitted into the concave portion formed by the above.

Reference numeral 3 denotes a lid for closing the opening of the floor panel 1,
An aluminum frame 4 having a groove-shaped cross section is attached to the periphery of the lid 3. The lower surface of the frame 4 of the lid 3 is in close contact with the elastic airtight material 5.

In the airtight structure of the lid of the housing opening shown in FIG. 1 according to the present invention, the lower surface of the frame 4 of the lid 3 is in close contact with the elastic airtight material 5 at the time of covering, so that the opening of the floorboard 1 is closed. The elastic airtightness with the lid 3 is maintained, and cold air does not enter from below the floor panel 1 even when the ventilation fan is operated in winter.

Although the embodiment of the present invention has been described with reference to the drawings, the specific configuration of the present invention is not limited to the illustrated embodiment, and design changes within the scope of the present invention are possible. Included in the present invention.

For example, a frame may not be provided on the periphery of the lid 3, and the lower surface of the periphery of the lid 3 may be directly in close contact with the elastic airtight material 5.

[0016]

According to the airtight structure of the lid of the housing opening according to the present invention, since the opening of the wall plate is airtightly closed by the lid, there is no possibility that cold air may enter due to the operation of the ventilation fan in winter. Absent.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view of a main part of an airtight structure of a lid of a housing opening according to the present invention.

FIG. 2 is an enlarged sectional view of a main part of a conventional hermetic structure of a lid of a housing opening.

FIG. 3 is an enlarged sectional view of a main part showing another example of a conventional hermetic structure of a lid of a housing opening.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wall board (floor board) 2 Frame 21 Flange 22 Rise piece 3 Lid 4 Frame 5 Elastic airtight material

Claims (1)

[Claims] An opening is provided in a wall plate of a house, a frame is provided along the periphery of the opening of the wall plate, a flange is provided on the frame, and a flange for receiving a lid is provided. An elastic airtight material is fitted into the concave portion, and a peripheral edge of the lid is in close contact with the elastic airtight material when the opening is covered with the elastic airtight material.