JP2000240275A - Heat-insulating floor hatch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the heat-insulating function without losing the original functions of a floor hatch. SOLUTION: A floor hatch 1 comprises a casing 7 and heat-insulating materials filling the casing 7. The casing 7 comprises metal upper and lower horizontal boards 3, 4 and a heat-insulating sideboard 6 directly or indirectly connecting their ends to each other. The use of this floor hatch 1 for a cover body of a basement 13 can suppress the heat transmitted to the lower horizontal board 4 from transmitting to the upper horizontal board 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor hatch used as an inspection port of a water tank, a warehouse, a storage room (hereinafter referred to as a basement) or an insulating lid of an opening provided in a basement.

[0002]

2. Description of the Related Art A heat insulating floor hatch having a structure in which a housing is filled with a heat insulating material is conventionally known. This floor hatch has a structure in which a heat insulating material is filled in a box body obtained by bending a metal plate as the housing, and the box body is covered with a lid.

[0003]

However, when the floor hatch of the above structure is used as a lid of a basement filled with ice or hot water, heat exchange occurs between the basement and the outside air through the metal plate, and the basement is closed. There is a problem that the temperature cannot be maintained at a predetermined temperature.

The inventor of the present invention has conducted various studies to solve the above problem, and found that it is sufficient to insert a heat insulating material in the middle of the metal plate, but without impairing the original function of the floor hatch. A problem is in which part of the metal plate the heat insulating material is inserted. Therefore, an object of the present invention is to improve the heat insulation of the floor hatch by inserting a heat insulating material into the metal plate without impairing the original function of the floor hatch.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a housing and a floor hatch in which a heat insulating material is filled in the housing, wherein the housing is made of metal. A means is adopted which comprises an upper and lower horizontal plate and a heat-insulating side plate for directly or indirectly connecting the ends of the upper and lower horizontal plates.

[0006]

Next, the most preferred embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 and 2, a floor hatch 1 according to the present invention has a rectangular plate shape as a whole, and a hook 2 for lifting the floor hatch 1 is located near a corner on the upper surface thereof.
Is provided.

As shown in FIG. 3, the floor hatch 1 has a mat-like heat insulating material 5 sandwiched between two metal upper and lower horizontal plates 3 and 4 to form a sandwich. It is obtained by applying the side plate 6 to the peripheral surface side and joining the side plate 6 and the upper and lower horizontal plates 3 and 4.
In other words, the heat insulator 5 is filled in a housing 7 composed of the upper and lower horizontal plates 3 and 4 and the side plate 6.

A reinforcing member 10 is provided between the upper and lower horizontal plates 3 and 4 at a predetermined interval in the horizontal direction, and a portion of the upper horizontal plate 3 where the hook 2 is provided. A reinforcing material 11 having the function of an anchor member is attached to the back side, so that the upper horizontal plate 3 can be reinforced when the floor hatch 1 can be held by hand with the hook 2 indicated by a dashed line. ing.

In the present invention, a resin foam, a glass fiber aggregate, rock wool, or the like is used as the heat insulating material 5. Preferably, urethane is used because the housing 7 can be easily filled with the heat insulating material. A resin foam is used. Also,
As the side plate 6, a material having better heat insulation than the upper and lower horizontal plates 3 and 4, for example, a synthetic resin plate is used. The side plate 6 can be used as a single plate on each of the four peripheral surfaces so as to be directly joined to the horizontal upper and lower plates 3 and 4, but can also be used as a composite. However, in any of the embodiments, the side plates 6 applied to the four peripheral surfaces in a plate shape are joined to each other at the corners of the housing 7 via the joining members 12.

When used as a composite material, the corner portions of the housing 7 formed by the upper and lower horizontal plates 3 and 4 and the side plate 6 are taken into consideration in consideration of the strength and shape workability applied to the corner portions of the housing 7. It is better to provide the connecting members 8 and 9 obtained by extruding other materials, preferably metal materials, especially aluminum. In this case, the connecting members 8 and 9 are
a, 8b, 9a, 9b are provided, the ends of the upper and lower horizontal plates 3, 4 are fitted into the fitting portions 8a, 9a, and the side plates 6 are fitted into the remaining fitting portions 8b, 9b. Is fitted.

When the floor hatch 1 having the above structure is used as the lid of the basement 13, a cushioning material 16 is laid on a step 15 provided in the opening 14 of the basement 13, and the hook 2 is held on the cushioning material 16. You only have to drop the floor hatch 1.

Then, when the water put in the basement 13 is made into ice using, for example, nighttime electric power, and the floor hatch according to the conventional art is used, the heat of the basement 13 is transmitted through the upper and lower horizontal plates of the floor hatch 1. However, in the floor hatch 1 according to the present invention, since the upper and lower horizontal plates 3 and 4 are connected not only with the heat insulating material 5 having low thermal conductivity but also with the side plates 6, It is difficult for the heat of the horizontal plate 4 to be transmitted to the outside of the room through the upper horizontal plate 3. Therefore, the floor hatch 1 according to the present invention can significantly enhance the heat insulating effect of the basement 13 compared to the conventional technology without impairing the function of the conventional floor wasp.

The present invention can be carried out by partially modifying the above-described embodiments within a range that does not significantly impair the effects of the present invention while following the fundamental technical idea thereof. For example, a fitting portion for inserting the ends of the connecting members 8 and 9 may be provided on the side plate 6.

[0014]

As described in detail above, the present invention can improve the heat insulation of the floor hatch without impairing the original function of the floor hatch, and as a result, has the excellent effect of maintaining the heat insulation of the basement. Demonstrate.

[Brief description of the drawings]

FIG. 1 is a plan view of a floor hatch according to the present invention.

FIG. 2 is a side view of the floor hatch.

FIG. 3 is an enlarged sectional view of a main part of the floor hatch.

[Explanation of symbols]

 7 Housing 5 Heat insulating material 3 Upper horizontal plate 4 Lower horizontal plate 6 Side plate 8 Connecting member 8a Fitting portion 8b Fitting portion 9a Fitting portion 9b Fitting portion

Claims (3)

[Claims] 1. A housing (7) and a heat insulating material (5) in the housing.
In the floor hatch which is filled with
A metal upper and lower horizontal plate (3, 4) and a heat insulating side plate (6) for directly or indirectly connecting the ends of the upper and lower horizontal plates.
And a heat-insulating floor hatch. 2. The upper and lower horizontal plates (3, 4) and the heat insulating side plates (6) are indirectly connected via connecting members (8, 9), and the connecting members (8, 9) are connected indirectly. The heat-insulating floor hatch according to claim 1, wherein (a) is applied to a corner of the housing (7). 3. An end of each of the upper and lower horizontal plates (3, 4) and the heat insulating side plate (6) is connected to a fitting portion (8a, 8b) formed at an end of a connecting member (8, 9). , 9a, 9b).