JP5517513B2 - Waterproof frame for evacuation hatch waterproof frame and external floor opening - Google Patents

Description

  The present invention relates to a waterproof frame for an evacuation hatch installed on an external floor such as a veranda of a building such as a house or a public building, and a waterproof structure of an external floor opening.

Conventionally, in a building such as an apartment house, an evacuation hatch containing a ladder is sometimes provided inside an external floor such as a veranda as a means for evacuating to a lower floor in the event of a disaster such as a fire or an earthquake.
The evacuation hatch currently on the market is composed of a rectangular tubular frame and upper and lower lids connected to the frame by hinges or the like, and is made of a stainless steel plate that is less susceptible to corrosion. When installing such an evacuation hatch, in the case of a reinforced concrete building, it is common to embed a frame in advance at a predetermined position on the external floor before placing the concrete. In addition, in the case of a building made of steel frame and the floor is composed of PC concrete panels, an opening is provided in the floor and an evacuation hatch is embedded, and the periphery is coated with a liquid synthetic resin to be waterproofed. In general, waterproofing is performed by a waterproofing method (FRP waterproofing method or the like).

In a building having a steel structure and an external floor composed of ALC panels, waterproofing is usually performed using a waterproof sheet mainly made of a synthetic resin such as soft vinyl chloride. As a waterproofing method in the case of providing an evacuation hatch on the external floor having such a configuration, for example, there is a method in which a waterproof sheet is raised to the vicinity of a sealing pocket formed in a frame and wet sealing is laid. Since it is difficult in field work to secure and attach the waterproof sheet to a metal such as stainless steel, it is secured by a sealing material.
However, since the exposed sealant is inferior in durability to the waterproof sheet, there is a problem in that maintenance is troublesome. In addition, since the position is close to the floor, there are difficulties in workability, and when the height of the rise is increased in order to improve workability, there is a problem that the use of the external floor becomes worse and the lid and handrail There arises a problem that the height difference is reduced and the safety is lowered (the risk of falling when the lid is placed increases).

  A waterproof structure for an evacuation hatch that has been conventionally used will be described with reference to FIG. A step portion 41 is formed between the end portion 40 of the waterproof sheet and the outer frame of the evacuation hatch, and a gap between the end portions of the waterproof sheet is made watertight by filling the sealing material 42. In general, however, the sealing material usually deteriorates and cracks in several years, and the watertight performance is usually lost.To extend the life, the deteriorated sealing material must be removed and then placed on a new sealing material. Is required. Further, in the waterproof structure, since the sealing position is close to the floor surface, flooding frequently occurs due to rainwater, which tends to cause a phenomenon of deterioration, that is, water leakage.

  Patent Document 1 below describes a waterproof covering member used when a building exposed opening such as an escape hatch is formed in a building exposed portion such as a balcony on which a waterproof sheet such as vinyl chloride is laid. The waterproof covering is made of synthetic resin, the edge and the rising part are heat-welded to the waterproof sheet, the bent part is bonded to the escape hatch, and the caulking material is applied to the peripheral part and the peripheral part of the bent part. Is waterproofed.

: JP-A-8-338114

  However, in the configuration described in Patent Literature 1, although there is no work in an upward state, three work steps of heat welding, adhesion, and caulking material application are necessary to ensure waterproofness, and the work is complicated. There's a problem.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a waterproof frame and a waterproof structure of an external floor opening that can ensure waterproof performance by a simple waterproof process.

According to the first invention,
A waterproof frame used for waterproofing around an opening in which a cylindrical frame having an upper end protruding from the floor surface is fitted, which is perforated in an external floor having a waterproof layer made of a synthetic resin waterproof sheet,
A horizontal piece, an upright piece refracted upward from the inner edge of the horizontal piece, and a folded piece refracted inward and downward from the upper end of the upright piece,
The height of the upright piece corresponds to the protruding dimension from the floor surface of the cylindrical frame,
There is provided a waterproof frame characterized in that an outer surface side is coated with the same material as that of the waterproof sheet.

Here, the waterproofing process is performed by fusing or welding the waterproof frame and the edge of the waterproof sheet constituting the waterproof layer of the external floor.
In the first invention, since the cylindrical frame is covered by the folded piece that is refracted inward and downward from the upper end of the standing piece of the waterproof frame, rainwater is present between the cylindrical frame and the standing piece of the waterproof frame. There is no risk of intrusion and high waterproofness is demonstrated. In addition, the escape hatch is usually covered with an upper lid. Therefore, since the cylindrical frame is covered with the folded piece and the upper lid of the escape hatch, higher waterproofness is exhibited.

According to the second invention,
An opening formed in an external floor having a waterproof layer made of a synthetic resin waterproof sheet;
A cylindrical shape corresponding to the opening shape, and a frame fitted into the opening with the upper end protruding from the floor surface;
A horizontal piece, an upright piece refracted upward from the inner edge of the horizontal piece, and a folded piece refracted inward and downward from the upper end of the upright piece, the outer surface side being coated with the same material as the waterproof sheet, and the frame A waterproof frame covering,
A horizontal piece of the waterproof frame is placed on the floor surface, and an edge portion of a waterproof sheet constituting the waterproof layer is fused or welded, and the standing piece rises along the outer surface of the frame, and the folded back A waterproof structure for an external floor opening of a building is provided, wherein a piece is configured such that a tip covers an upper end of the frame.

  In the second invention, the waterproof structure of the outer floor opening has a waterproof frame having a folded piece covering the frame fitted in the opening drilled in the outer floor, so there is no risk of rainwater entering and high waterproof Sex is demonstrated. In addition, the escape hatch is usually covered with an upper lid. Therefore, since the frame fitted in the opening is covered with the folded piece and the upper cover of the escape hatch, higher waterproofness is exhibited.

  According to the waterproof frame of the present invention and the waterproof structure of the external floor opening, the edge of the waterproof sheet constituting the waterproof layer of the external floor and the waterproof frame coated with the same material as the waterproof sheet are fused or The waterproof process can be completed only by the work of welding.

It is a longitudinal cross-sectional view which shows the state which installed the evacuation hatch which has the waterproof structure which concerns on the Example of this invention in the veranda floor which gave the sheet | seat waterproof of building A. It is a longitudinal cross-sectional view which shows the waterproof structure of the veranda floor opening part of the said evacuation hatch. It is a perspective view of the steel plate member C1 which comprises the waterproof frame C which concerns on one embodiment of this invention. It is a top view of the said steel plate member C1. It is a front view of the said steel plate member C1. It is a top view of the waterproof frame C having a substantially rectangular shape in plan view configured by combining four steel plate members C1. It is a longitudinal cross-sectional view which shows the waterproof structure of the evacuation hatch conventionally implemented.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment in which the present invention is adopted for a cantilever floor of a building will be described in detail with reference to the drawings. In the present embodiment, the opening is an evacuation hatch.

FIGS. 1 and 2 show the structure of an evacuation hatch fitted on a veranda floor of a building A that has been waterproofed. FIG. 1 is a longitudinal sectional view from the building to the veranda floor, and FIG. 2 is an enlarged view of the waterproof structure. It is.
<Structure of building A>
The structure of the building A is a steel building in which a frame is composed of columns made of square steel pipes and beams 11 made of H-shaped steel. The outer wall, floor, veranda waist wall, and veranda floor consist of ALC panels. The outer wall panel 1a and the waist wall panel 1b are positioned and supported by a hardware having an inverted T-shaped section or an L-shaped section attached to the upper flange of the beam 11.
As for the part of the veranda floor where the evacuation hatch is installed, the floor panel is not laid and the frame 10 having an opening corresponding to the size of the hatch frame is bolted to the upper flange of the beam 11. A plate-like heat insulating material 12 made of foamed resin and a hard protective plate material 13 for protecting the heat insulating material are laid on the beam 11, and a waterproof sheet 14 whose main constituent material is soft vinyl chloride is an insulating method. The waterproofing layer is formed by a method of fixing the fixing bracket to the floor using a screw and fusing or welding the waterproof sheet 14 to the fixing bracket. . A mortar 15 is placed on the frame 10 in order to adjust the height. An eaves ceiling is formed below the floor of the veranda by a plate material 16 having a predetermined fireproof performance.

<Configuration of evacuation hatch B>
The evacuation hatch B includes a rectangular tubular frame (case) 20, an upper lid 21, and a lower lid 22. On the outer surface of the frame 20, a latching piece 24 having an L-shaped cross section for latching the hatch B on a housing or the like is provided at a predetermined height. The upper lid 21 is attached so as to be openable and closable via a hinge 26 attached to the outside of the waterproof frame by a hinge receiver 25. The lower lid 22 is attached to the level of the plate material 16 constituting the eaves ceiling below the frame 20 so as to open and close in conjunction with the opening and closing of the upper lid 21 via a hinge 27. A slide extendable ladder 28 is accommodated in the frame 20. The evacuation hatch B having the above-described configuration is fitted into the opening of the frame 10, and the hooking piece 24 is hooked on the periphery of the opening of the frame 10 and is bolted.

<Configuration of waterproof frame C>
3-5 is the steel plate member C1 which comprises the waterproof frame C, FIG. 3 is a perspective view, FIG. 4 is a top view, FIG. 5 is a front view. FIG. 6 is a top view of a substantially rectangular frame in plan view configured by combining four steel plate members C1.
As shown in FIG. 3, the steel plate member C1 includes a horizontal piece 30, a standing piece 31 refracted upward from the inner edge of the horizontal piece 30, and a folded piece 32 refracted inward and downward from the upper end of the standing piece 31. This is a member having an L-shaped unequal side in plan view. As shown in FIG. 6, the waterproof frame C is a frame having a substantially rectangular shape in a plan view configured by combining four steel plate members C1.
The surface side of the steel plate member C1 (the upper surface of the horizontal piece 30, the outer surface of the standing piece 31, the upper surface and the outer surface of the folded piece 32) is coated with the same soft vinyl chloride as the main constituent material of the waterproof sheet 14, The waterproof sheet 14 can be fused or welded.

Furthermore, a waterproof sheet piece 33 made of the same material as that of the waterproof sheet 14 is water-tightly attached in advance to one end of the steel plate member C1. The waterproof frame C is configured by watertightly connecting the steel plate member C1 and another adjacent steel plate member C1 by the waterproof sheet piece 33. The internal dimensions of the opening of the frame constituted by the four steel plate members C1 correspond to the outer dimensions of the frame 20 of the evacuation hatch B so that the waterproof frame C can be fitted into the frame 20 of the evacuation hatch B. The height of the standing piece 31 corresponds to the projecting dimension of the frame 20 from the floor surface of the frame 20 of the evacuation hatch B (the upper surface of the protective plate 13). The lower end height of the folded piece 32 is lower than the upper end of the frame 20 of the escape hatch B so as to prevent rainwater from entering between the frame 20 of the escape hatch B and the standing piece 31 of the water frame C. It is configured.
The waterproof frame C having the above configuration is placed on the protective plate 13 so as to cover the protruding portion of the frame 20 of the evacuation hatch B and fixed to the floor by screws, and further includes a waterproof sheet piece 33 and a waterproof layer on the floor. The edge portion of the waterproof sheet 14 is fused or welded to ensure the water tightness around the escape hatch B. Further, a wet sealing material 34 is filled inside the folded piece 32. Even if the sealing material is not filled, the waterproof performance is not affected.

  According to the above configuration, the frame 20 of the evacuation hatch B is covered with the waterproof frame C having the folded piece 32, and the folded piece 32 is normally covered with the upper lid 21 of the hatch B, so that there is no risk of rainwater invading and high. Waterproof performance is demonstrated. In addition, the waterproof treatment around the evacuation hatch B can be completed by merely fusing or welding the waterproof sheet piece 33 of the waterproof frame C and the edge of the waterproof sheet 14 constituting the waterproof layer on the floor surface to the waterproof frame C. And workability is excellent.

Sheet waterproofing is less popular than asphalt waterproofing and film waterproofing, and is limited to industrialized houses. In the past, evacuation hatches were often used in large-scale apartment houses with steel frames and RC conventional methods, so the frequency of use was low in industrialized houses with many small apartment houses. However, recently, the use of industrialized housing systems is increasing for large-scale properties with more than three floors, and it is predicted that the present invention will increase the need to solve the conventional evacuation hatch and seat waterproofing problems. .

A Building B Evacuation hatch C Waterproof frame C1 Steel plate member 1a Outer wall panel 1b Waist wall panel 10 Frame 11 Beam 12 Heat insulating material 13 Protective plate material 14 Waterproof sheet 15 Mortar 16 (constituting eaves ceiling) Plate material 20 Cylindrical frame 21 Upper lid 22 Lower lid 24 Hanging piece 25 Hinge receiver 26 Hinge (for upper lid)
27 Hinge (for lower lid)
28 Ladder 30 Horizontal piece 31 Standing piece 32 Folding piece 33 Waterproof sheet piece 34 Sealing material 40 Waterproof sheet (end)
41 Step 42 Sealing material

Claims (2)

A waterproof frame used for waterproofing around an opening in which a cylindrical frame having an upper end protruding from the floor surface is fitted, which is perforated in an external floor having a waterproof layer made of a synthetic resin waterproof sheet,
A horizontal piece, a standing piece refracted upward from the inner edge of the horizontal piece, and a folded piece refracted inward and downward from the upper end of the standing piece,
The height of the upright piece corresponds to the protruding dimension from the floor surface of the cylindrical frame,
A waterproof frame characterized in that an outer surface side is coated with the same material as that of the waterproof sheet. An opening formed in an external floor having a waterproof layer made of a synthetic resin waterproof sheet;
A cylindrical shape corresponding to the opening shape, and a frame fitted into the opening with the upper end protruding from the floor surface;
A horizontal piece, an upright piece refracted upward from the inner edge of the horizontal piece, and a folded piece refracted inward and downward from the upper end of the upright piece, the outer surface side being coated with the same material as the waterproof sheet, and the frame A waterproof frame covering,
A horizontal piece of the waterproof frame is placed on the floor surface, and an edge portion of a waterproof sheet constituting the waterproof layer is fused or welded, and the standing piece rises along the outer surface of the frame, and the folded back A waterproof structure for an external floor opening of a building, wherein the piece is configured such that a tip covers an upper end of the frame.

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