JP7133876B1 - waterproof hatch - Google Patents

Abstract

A waterproof hatch that prevents water from leaking from the joints of a plurality of split lids when the inside of a receiving frame is closed by a lid composed of a plurality of split lids so as to be openable and closable. A waterproof hatch (10) includes a lower lid body (30) composed of a support part (24) protruding inward from an inner peripheral surface of a receiving frame (20) and a plurality of divided lid bodies (31) supported by the support part (24). , a connecting member 33 that connects the plurality of divided lids 31, a first elastic sealing member 25 that seals between the upper surface of the support portion 24 and the lower surface of the edge portion of the lower lid 30, and the lower surface of the connecting member 33. a second elastic sealing member 34 provided between the edge portions 31b of the plurality of divided lids 31 facing each other and sealing the seams 31c formed between the plurality of divided lids 31; At least one of the edge portions 31b of the split lid 31 facing each other is formed with a notch portion 31d above the first elastic seal member 25 for bringing the second elastic seal member 34 into close contact with the first elastic seal member 25. did. [Selection drawing] Fig. 7

Description

Application of Article 30, Paragraph 2 of the Patent Law 1. Publication date of the invention April 27, 2021 2. Address of the website that posted the invention https://www. youtube. com/watch? v=v_xxQWkDjc83. Publisher: Chubu Corporation 4. Contents of the Invention Ultra-large-diameter machine hatch

TECHNICAL FIELD The present invention relates to a waterproof hatch that seals an opening provided in the floor of a building in a waterproof state.

Floor hatches and machine hatches open and close an opening formed in the floor of a building or the like, and Patent Document 1 discloses an invention of a floor hatch having a waterproof function. The floor hatch includes a receiving frame attached to the edge of an opening formed in the floor surface, a receiving plate projecting inward from the lower portion of the receiving frame, a lid supported by the receiving plate, A rubber packing (hereinafter referred to as a first elastic seal member) is provided on the upper surface of the receiving plate and seals with the lid. A bolt mounting recess is provided in the corner of the upper surface of the lid, and a bolt insertion hole is drilled in the center of the recess. After fitting the lid body to the receiving frame, the first elasticity is achieved by inserting the tightening bolt through the bolt insertion hole of the lid body and the bolt insertion hole of the receiving plate, and screwing a nut onto the lower end of the tightening bolt. The sealing member is pressed, and the lid body is fixed to the receiving frame in a state of being sealed by the first elastic sealing member.

JP-A-9-151475

The floor hatch of Patent Document 1 is for opening and closing a small opening formed on the floor, and for factories, etc., for moving large machinery and materials, it is for opening and closing a large opening. A machine hatch is provided. In recent years, machine hatches have become even larger so as to block large openings. becomes heavy, and it becomes difficult to install and open and close the lid. For this reason, in a machine hatch that closes a large opening, the above problem can be solved by arranging two divided lid bodies side by side in the horizontal direction using two sheet metal lid bodies. can.

In this case, even if the edges facing each other of the two split lids are brought as close as possible, a small gap is formed due to dimensional errors or the like in the joint formed by the edges facing each other of the two split lids. be done. For this reason, a second elastic sealing member using a rubber packing is attached along the seam above the seam formed by the edges of the two divided lids facing each other, thereby separating the two divided lids. It is possible to prevent water from flowing in from the upper side of the lid through the joint. However, although the second elastic sealing member can prevent water from entering from the upper side of the joint between the two split lids, the split lids are thick enough to maintain strength. The seam of the split lid is opened in the horizontal direction due to the plate thickness above the first elastic seal member, and water may flow in through the horizontal opening of the seam of the two split lids. SUMMARY OF THE INVENTION An object of the present invention is to provide a waterproof hatch that prevents water from leaking from the joints of a plurality of split lids when the inside of a receiving frame is closed by a lid composed of a plurality of split lids so as to be openable and closable. do.

In order to solve the above problems, the present invention provides a receiving frame attached to the edge of an opening provided on a floor surface, a support portion provided projecting inward from the inner peripheral surface of the receiving frame, and a support portion supported by the support portion. extending along a seam formed by a lid composed of a plurality of divided lids arranged horizontally in a receiving frame and edges facing each other of the plurality of divided lids; A connecting member provided to straddle the upper side of the body and connecting the plurality of divided lids, and a lid provided on the upper surface of the support portion or the lower surface of the edge portion of the lid so that the lid is pressed against the support. A first elastic sealing member that seals between the body and the supporting portion is provided between the lower surface of the connecting member and the edge portions facing each other of the plurality of divided lids, and the connecting member is pressed against the lids. and a second elastic sealing member that seals the seams formed between the plurality of split lids, wherein at least one of the mutually facing edge portions of the plurality of split lids is provided with: A watertight hatch is characterized in that a notch is formed above the first elastic seal member to bring the second elastic seal member into close contact with the first elastic seal member.

In the waterproof hatch configured as described above, the lid body is sealed with the receiving frame by the first elastic sealing member provided between the lid body and the support portion, and the seams of the plurality of divided lid bodies constituting the lid body are sealed. is sealed by a second elastic sealing member provided on the upper side of the joints of the plurality of split lids. In this waterproof hatch, at least one of the edges facing each other of the plurality of split lids has a notch for bringing the second elastic seal member into close contact with the first elastic seal member above the first elastic seal member. part is formed. The first and second elastic seal members are in close contact with each other inside the notch, so that the seams of the plurality of split lids are horizontally closed above the first elastic seal member. As a result, it is possible to prevent water from flowing into the receiving frame through the joints of the plurality of divided lids.

In the waterproof hatch configured as described above, the notch may be formed in a semicircular shape in each of the edges of the plurality of split lids on both sides facing each other. Also, the notch may extend to the outer end in the direction in which the joint extends. The notch may be formed so as to expand from the inside to the outside in the direction in which the joint extends. Furthermore, the notch may have a tapered shape with a smaller diameter on the lower side.

1 is a perspective view of a waterproof hatch of the present invention installed on a floor; FIG. FIG. 2 is a perspective view showing a state in which the upper lid body and the H-shaped steel are moved upward from FIG. 1; It is a perspective view of a receiving frame. FIG. 4 is a vertical cross-sectional view at a position where a drain port is formed with the lower cover attached to the receiving frame; (a) is a partial cross-sectional view taken along line AA, and (b) is a partial cross-sectional view taken along line BB. It is an exploded perspective view of a lower lid. It is a partial cross-sectional view taken along line CC. It is the schematic of the modification which changed the shape of the notch part (1). It is the schematic of the modification which changed the shape of the notch part (2). It is the schematic of the modification which changed the shape of the notch (3).

An embodiment of a waterproof hatch (machine hatch or floor hatch) of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the waterproof hatch 10 of the present invention is attached to the edge of a large opening A provided on the floor of a building or structure, etc., and blocks the opening A so that it can be freely opened and closed. . As shown in FIGS. 1 and 2, the waterproof hatch 10 includes a receiving frame 20 attached to the edge of the opening A, an upper cover 22 supported on the upper part of the receiving frame 20, and a lower part of the receiving frame 20. and a lower lid body (lid body) 30 to be covered.

As shown in FIGS. 1 to 3, the receiving frame 20 has a substantially square (rectangular) and low cylindrical shape when viewed from the top, and for ease of manufacture and transportation, the receiving frame 20 has a rectangular shape. It is obtained by connecting two substantially U-shaped receiving frame parts 20a. A connecting flange 20b extending outward is provided at the open end of each receiving frame part 20a, and the two receiving frame parts 20a are connected by fixing the connecting flanges 20b on both sides to each other to form a substantially square shape in plan view. It has a receiving frame 20 . A packing or a sealing material is interposed between the connecting flanges 20b fixed to each other, and the two receiving frame parts 20a are connected in a liquid-tight manner.

As shown in FIGS. 2 and 3, a stepped portion 21 is formed on the upper portion of the inner peripheral surface of the receiving frame 20 and protrudes inward. 22 are supported. The upper lid body 22 is a lid body using 28 iron plates in this embodiment, and is supported by the H-shaped steel 23 that constitutes the beam provided in the receiving frame 20 together with the upper stepped portion 21 of the receiving frame 20 . The upper cover 22 has a shallow box shape with an open top, and the same decorative material as the floor surface of a building is laid inside, but the upper cover 22 may be made of checkered steel plate or the like. .

As shown in FIGS. 3 to 5, a support portion 24 protruding inward is provided at the lower portion of the inner peripheral surface of the receiving frame 20, and the supporting portion 24 has a lower lid that closes the inside of the receiving frame 20 in a liquid-tight manner. A lower lid body 30 is supported. As shown in FIGS. 3 and 4, the support portion 24 is provided continuously over the entire inner peripheral surface of the receiving frame 20, and includes a horizontal plate portion 24a protruding inward from the lower portion of the receiving frame 20. , and a vertical plate portion 24b extending upward from the inner end of the horizontal plate portion 24a. A first elastic sealing member 25 using a chloroprene rubber sponge (rubber sponge square cord) is provided at the inner end of the horizontal plate portion 24a. It liquid-tightly seals (closes) the four edges of the lid 30 . The first elastic seal member 25 is higher than the vertical plate portion 24b of the support portion 24 (has a higher thickness than the vertical plate portion 24b). The portion above the vertical plate portion 24 b of the first elastic seal member 25 is elastically deformed and adheres to the lower surface edge portion of the lower lid 30 , so that the first elastic seal member 25 seals between the receiving frame 20 and the lower lid 30 . It seals the space. As shown in FIGS. 3 and 4, the receiving frame 20 is formed with a drain port 20c at a height position of the support portion 24, and the water flowing into the receiving frame 20 through the gap of the upper lid body 22 is supported. The water is discharged from the portion 24 to the outside through the drain port 20c.

As shown in FIGS. 2, 5 and 6, the lower cover 30 covers the inside of the receiving frame 20 in an openable and closable manner. It is composed of (a plurality of) divided lids 31 . As shown in FIGS. 4 to 6, the split lid body 31 is made of a sheet metal member. A portion 31a is formed. As shown in FIG. 5 , three L-shaped angle members 32 are fixed to the lower surface of each split lid 31 , and each split lid 31 is reinforced by the L-shaped angle members 32 . The two divided lids 31 are arranged so as to approach each other in the horizontal direction, and the edges 31b of the two divided lids 31 facing each other form a seam 31c. The two split lids 31 are placed as close to each other as possible so that the gap created by the seam 31c of the two split lids 31 is as small as possible. The lower lid 30 is fastened and fixed to the supporting portion 24 of the receiving frame 20 by a plurality of bolts and nuts at the outer edge of the portion that comes into close contact with the first elastic seal member 25 , and the lower lid 30 is attached to the supporting portion of the receiving frame 20 . A first elastic sealing member 25 is pressed when fastening and fixing to 24 to seal between the receiving frames 20 .

As shown in FIGS. 5 to 7, the two divided lids 31 are connected by a connecting member 33, and the connecting member 33 extends along the seam 31c on the upper side of the two divided lids 31. there is The connecting member 33 has a substantially Ω-shape in which both ends of the opening side of a katakana square U-shaped opening downward are extended outward in cross section in a direction orthogonal to the longitudinal direction. The glyph portion is used as a seal member accommodating portion 33a for accommodating a second elastic seal member 34 for sealing the seam 31c, and portions extending outward from both ends of the opening side of the seal member accommodating portion 33a are fixed to the split lid body 31. 33b. The connecting member 33 extends from the outside to the outside of the first elastic sealing member 25 so as to straddle the first elastic sealing member 25 along the seam 31c.

As shown in FIGS. 5 and 7, the second elastic seal member 34 is accommodated in the seal member accommodation portion 33a, and the second elastic seal member 34 is arranged along the seam 31c of the two split lids 31. and seals (liquid-tightly closes) the seam 31c. The fixing portions 33b on both sides of the opening side of the sealing member accommodating portion 33a are fastened and fixed to each of the two divided lid bodies 31 by a plurality of bolts and nuts provided along the joint 31c.

As shown in FIG. 7, the second elastic seal member 34 also extends from the outside of the first elastic seal member 25 to the outside along the joint 31c so as to straddle the first elastic seal member 25, similarly to the connecting member 33. there is The thickness (height) of the second elastic seal member 34 is thicker (higher) than the height of the seal member accommodating portion 33a, and the portion of the second elastic seal member 34 below the seal member accommodating portion 33a is two sheets. The edge portions 31b of the divided lid body 31 facing each other are closely attached to seal the seams 31c. The upper side of the seam 31c of the two split lids 31 is sealed by a second elastic sealing member 34 that is pressed when the fixing portion 33b of the connecting member 33 is fastened and fixed to each edge 31b of the split lid 31. .

As shown in FIGS. 5 to 7, the edge 31b of each split lid 31 is formed with notches 31d above the first elastic seal member 25 at both ends in the direction in which the seam 31c extends. The notch 31 d has the function of bringing the second elastic seal member 34 into close contact with the first elastic seal member 25 . The notch 31d formed in the edge 31b of each split lid 31 has a substantially semicircular shape, and the notch 31d of the split lids 31 on both sides forms a substantially circular shape. The upper and lower edges of the notch 31d in this embodiment are chamfered so that when the first and second elastic seal members 25 and 34 are inside the notch 31d, the first and second elastic seal members 25 and 34 are placed inside the notch 31d. The seal members 25 and 34 are difficult to cut due to the upper and lower edges of the notch 31d.

The waterproof hatch 10 configured as described above includes a receiving frame 20 attached to the edge of the opening A provided on the floor surface, and a supporting portion 24 provided projecting inward from the lower inner peripheral surface of the receiving frame 20. , a lower lid body (lid body) 30 composed of two (plurality) divided lid bodies 31 which are supported by the support portion 24 and arranged horizontally in the receiving frame 20, and two divided lid bodies. a connecting member 33 extending along a seam 31c formed by the edges 31b facing each other of the members 31 and provided so as to straddle the upper sides of the two divided lids 31 to connect the two divided lids 31; I have it. In the waterproof hatch 10 , a first elastic sealing member 25 is provided on the upper surface of the support portion 24 to seal between the lower lid member 30 and the support portion 24 by pressing the lower lid member 30 against the support portion 24 . is provided, and the connecting member 33 is pressed by the lower lid 30 between the lower surface of the sealing member accommodating portion 33a of the connecting member 33 and the edge portions 31b of the two divided lids 31 facing each other, thereby forming two A second elastic sealing member 34 is provided to seal a seam 31c formed between the split lids 31. As shown in FIG.

In this waterproof hatch 10, the lower lid body 30 is sealed between the receiving frame 20 and the first elastic sealing member 25 provided between the support portion 24, and two divided lids constituting the lower lid body 30 are formed. The upper side of the seam 31c of the body 31 is sealed by a second elastic sealing member 34 provided on the upper side of the seam 31c of the two split lid bodies 31 . In the waterproof hatch 10, the edge portions 31b of the two divided lids 31 facing each other are formed with a notch portion 31d above the first elastic seal member 25. The seal member 34 is brought into close contact with the first elastic seal member 25 . The first and second elastic seal members 25 and 34 are in close contact with each other inside the notch 31d, so that the horizontal opening caused by the plate thickness of the seam 31c of the two split lids 31 is inside the notch 31d. The first and second elastic sealing members 25 and 34 that enter and adhere to each other are closed. In this manner, the two split lids 31 are sealed with the receiving frame 20 by the first elastic sealing member 25, the upper side of the seam 31c is sealed by the second elastic sealing member 34, and the two split lids 31 are separated. The first and second elastic sealing members 25 and 34, which are in close contact with each other inside the notch 31d formed in the edge 31b of the lid 31, seal the horizontal opening caused by the plate thickness of the divided lid 31. Water can be prevented from flowing into the receiving frame 20 from between the lid 20 and the lower lid 30 and from the joint 31c of the two divided lids 31. - 特許庁

In the waterproof hatch 10 of this embodiment, the cutout portions 31d are formed in both of the edge portions 31b facing each other of the two divided lid bodies 31, but the present invention is not limited to this, and the second elastic seal If the shape and size allow the member 34 to be brought into close contact with the first elastic sealing member 25, the notch 31d is formed only in one of the edges 31b of the two split lids 31 facing each other. Also in this case, the same effect as described above can be obtained.

In the waterproof hatch 10 of this embodiment, the first and second elastic seal members 25 and 34 are closely attached inside the notch 31d, but the present invention is not limited to this, and a sealing material such as epoxy resin is used. The first and second elastic seal members 25 and 34 may be brought into close contact with each other. In addition, inside the notch portion 31d, a columnar shape (columnar shape) approximately the same as the thickness of the split lid 31 (may be slightly thicker than the thickness of the split lid 31 or may be slightly thinner than the thickness of the split lid 31) is provided. It is preferable that the elastic seal member has a shape that matches the shape of the notch 31d. You may do so.

In the waterproof hatch 10 of this embodiment, the notch 31d is formed in a semicircular shape on each of the edges 31b on both sides of the two split lids 31 facing each other, and the notches 31d on both sides are combined. It is circular by This makes it easier for the first and second elastic seal members 25 and 34 to enter the circular notch 31d due to elastic deformation.

The shape of the cutout portion 31d is not limited to the semicircular shape as described above. The shape of the notch 31d may be any other shape as long as the horizontal opening of the seam 31c can be blocked by the first elastic sealing member 25. FIG. In the modification shown in the schematic diagram of FIG. 8, the notch 31d has a tapered shape with a smaller diameter on the lower side. In this case, the upper second elastic seal member 34 is more likely to enter the notch 31 d than the first elastic seal member 25 . Also in this case, by chamfering the upper and lower edges of the notch 31d, when the first and second elastic seal members 25 and 34 enter the inside of the notch 31d, the first and second elastic seal members 25 and 34 are prevented from entering the notch 31d. The elastic seal members 25 and 34 are less likely to be damaged by the corners of the notch 31d. In addition, in FIG. The first and second elastic sealing members 25, 34 are indicated by gray strips, and the same applies to FIGS. 9 and 10 shown below.

In the waterproof hatch 10 of this embodiment, the notch 31d is formed in a semi-circular shape on each of the edges 31b on both sides of the two divided lids 31 facing each other, but it is not limited to this. Instead, in the modification shown in the schematic diagram of FIG. 9, the notch 31d extends to the outer end in the direction in which the joint 31c of the split lid 31 extends. In the modification shown in the schematic diagram of FIG. 10, the notch 31d extends from the inside to the outside in the direction in which the joint 31c of the split lid 31 extends. It is formed so as to spread to Also in these cases, the notch 31d may be tapered with a smaller diameter on the lower side. Furthermore, it is preferable to chamfer the upper and lower edges of the notch 31d.

In the waterproof hatch 10 of this embodiment (including modifications), the lower lid 30 is composed of two divided lids 31, but the present invention is not limited to this. 30 may be composed of three or more divided lids 31 .

In the waterproof hatch 10 of this embodiment (including modifications), the first elastic seal member 25 is adhered (provided) to the horizontal plate portion 24a of the support portion 24, but this is not the only option. Instead, it may be attached (provided) to the lower surface of the edge of the lower cover 30 . The second elastic seal member 34 is housed in the seal member housing portion 33a of the connecting member 33, but is not limited to this. It may be housed in the sealing member housing portion 33a of the connecting member 33 after being adhered (provided) along the seam 31c at the portion 31b.

DESCRIPTION OF SYMBOLS 10... Waterproof type hatch 20... Receiving frame 24... Supporting part 25... First elastic sealing member 30... Lower lid body 31... Division lid body 31b... Edges facing each other 31c... Seam 31d... Notch Part, 33... Connecting member, 34... Second elastic seal member, A... Opening.

Claims (5)

a receiving frame attached to the edge of the opening provided in the floor;
a support portion protruding inward from the inner peripheral surface of the receiving frame;
a lid composed of a plurality of divided lids supported by the support portion and arranged horizontally in the receiving frame;
a connecting member that extends along a seam formed by edges of the plurality of divided lids facing each other, is provided to straddle the upper sides of the plurality of divided lids, and connects the plurality of divided lids;
a first elastic sealing member provided on the upper surface of the support or on the lower surface of the edge of the lid, and for sealing between the lid and the support when the lid is pressed against the support; ,
It is provided between the lower surface of the connecting member and the edges facing each other of the plurality of divided lids, and is formed between the plurality of divided lids by pressing the connecting member against the lids. and a second elastic sealing member for sealing a seam between the
At least one of the edge portions facing each other of the plurality of divided lids is formed with a notch portion at a position above the first elastic seal member for bringing the second elastic seal member into close contact with the first elastic seal member. A waterproof hatch characterized by: In the waterproof hatch of claim 1,
A waterproof hatch, wherein the notch is formed in a semi-circular shape in each of the edges of the plurality of split lids on both sides facing each other. In the waterproof hatch of claim 1,
The waterproof hatch, wherein the notch extends to an outer end in a direction in which the joint extends. In the waterproof hatch according to claim 3,
A watertight hatch, wherein the notch portion is formed so as to expand from the inside to the outside in the direction in which the joint extends. In the waterproof hatch according to any one of claims 1 to 4,
A waterproof hatch, wherein the notch has a tapered shape with a smaller diameter on the lower side.

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