JPH07259275A - Roof drain - Google Patents

Abstract

PURPOSE:To provide a roof drain without the fear of deformation even in the case of using a thin stainless steel plate for cost reduction although the end part of a cylindrical part such as the reducer of a body and a relay strainer in the roof drain molded out of the stainless steel plate is liable to deform so as to be handled with care. CONSTITUTION:A circular plate like part such as the inclined part of a roof drain body and a sheet keep is formed into a concentric circle from the center. In a cylindrical part such as the reducer 5 of the body and a relay strainer 3, corrugation of corrugated plate shape to be parallel to the end face is formed partially or entirely. A protrusion parallel to the lower end face of the reducer 5 of the body is formed into ring shape, and a protrusion parallel to the upper end face of the relay strainer 3 is formed into ring shape. Ring bodies 9 molded out of natural or synthetic resin are mounted on the outer side face or lower edge of the reducer 5 and the inner wall upper end part or upper edge of the relay strainer 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof drain mainly used for draining a roof of a concrete building or a veranda, and more particularly to a roof drain formed by punching out a stainless steel plate.

[0002]

2. Description of the Related Art Conventionally, as roof drains, products made of cast iron with good corrosion resistance have been widely used.
Products that are punched and assembled from stainless steel sheets have been widely used and used because of their corrosion resistance, beauty, light weight, and ease of handling. Many proposals have been made for a roof drain formed by stamping and forming a stainless steel plate, and the applicant of the present application has also filed Japanese Utility Model Application No. 57-888.
09, Japanese Patent Application No. 58-250004, Japanese Patent Application No. 58-407.
35, Jpn. App. Sho 58-43400, Jpn. App. 1-33634
5, the Japanese Patent Application No. 5-59184, and the Japanese Patent Application No. 5-71446 have been proposed.

The roof drain is installed on the roof of a building or on a veranda, but the type differs depending on the waterproofing method applied on the slab of the roof or veranda. Generally, a waterproof sheet such as an asphalt sheet is made of asphalt or waterproof paint. When covering the slab surface, it is necessary to cover even the sloped part of the main body of the roof drain and make it adhere to the main body,
It is configured to be crimped to the main body by an annular sheet retainer. When using waterproof mortar or waterproof paint, the seat retainer is not necessary, so the roof drain is composed of the main body, seat retainer and strainer combination or the main body and strainer combination.

The roof drain provided on the veranda may be configured to be connected to the drain pipe of the roof drain provided on the balcony on the roof or on the floor. In that case, the drain pipe is fitted on the upper surface of the strainer. Such a circular opening is usually provided and is generally called a relay roof drain.

[0005]

A roof drain formed by punching out a stainless steel plate is composed of a funnel-shaped main body, an annular seat retainer and a hat-shaped strainer, or a main body and a strainer. It is beautiful and has good corrosion resistance, but it is expensive. Therefore, we have tried to reduce the cost by forming it with a thin steel plate as much as possible.

However, when a thin stainless steel plate is used, the outer peripheral edge portion of the main body and the sheet retainer is double-folded so as to prevent the end portion from being bent and reinforced so as not to be deformed. The strainer has been reinforced by arranging an annular piece in the shape of a flange from the lower end of the side wall, or by providing an annular piece in the shape of a flange on the upper opening of the strainer for the interrupting roof drain. Sometimes the lower end of the reducer of the main body and the upper end of the strainer have the drawback that they deform into ellipses unless they are handled carefully, and it was necessary to use a steel plate that was thick enough not to deform. An object of the present invention is to provide a roof drain that does not deform even if a thin stainless steel plate is used.

[0007]

DISCLOSURE OF THE INVENTION The present invention has been made as a result of studies for achieving the above object, and in a roof drain formed by punching and molding a stainless steel plate, a funnel-shaped main body, an annular seat retainer, and a hat. Each strainer is shaped so as to have a circular shape when viewed from the upper surface, but each of the generally flat plate-shaped portions is concentric with the center, and the substantially cylindrical portion is the upper end surface or the lower surface. A ring-shaped ridge is continuously formed so as to form a fine wavy shape parallel to the end face, a dish-shaped inclined portion and a reducer portion in the main body, a sheet pressing portion in contact with the dish-shaped inclined portion of the main body, a strainer such as a cylindrical portion. The object can be achieved by forming it partially or entirely.

In general, since the reducer of the main body and the strainer of the roof drain for relay are easily deformed, the cylindrical reducer and the cylindrical strainer of the main body are provided with an annular ridge protruding toward the outer wall surface or the inner wall surface. It is preferable that the protrusions are provided so as to be parallel to the end face, and it is desirable that these protrusions be provided near the ends, and a plurality of protrusions may be provided.

It is also possible to mount an annular body formed of a natural or synthetic resin on the outer surface or the lower edge of the reducer of the main body, as well as on the inner wall surface or the upper edge of the strainer, and in this case an annular body having elasticity. But it doesn't matter,
An annular body that is less likely to be deformed is more preferable, and it is preferable that the resin is molded with a resin that does not easily age. It should be noted that the annular body may be locked in a protrusion provided on the cylindrical portion or a groove formed by forming the protrusion.

[0010]

The roof drain main body is fixed to a predetermined position on the roof or the balcony on the concrete formwork before the slab is formed, and is fixed with concrete when the slab is formed, or is fixed with mortar by forming a through hole in the slab. When waterproofing the slab surface, if a waterproof sheet is used, the waterproof sheet covered up to the inclined part of the main body is pressure-bonded to the main body with a sheet presser, after finishing the surface with asphalt or mortar, a strainer is attached and the drain pipe is used as a main body reducer. It is inserted.

When the waterproof mortar on the surface of the slab is waterproofed only by waterproof coating, the sheet retainer is not used, and the strainer is connected to the main body. The corrugated annular ridges formed on the main body, sheet retainer and strainer, or the reducer and strainer of the main body, the protruding ridges, or the annular body formed of natural or synthetic resin respectively prevent deformation. .

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the embodiments shown in the drawings. [Embodiment 1] FIG. 1 is a funnel-shaped main body formed by punching out a stainless steel plate as shown in a side view in which a left half in which accessory parts such as bolts and nuts are omitted is shown in a cutaway cross section.
(1), annular seat retainer (2), hat strainer (3)
In the roof drain composed of
In (1), a corrugated plate-shaped waveform (7) is bent on the plate-shaped inclined part (4) and the reducer (5) to which the drain pipe is connected.
In the annular seat retainer (2), the corrugated surface (7) is similarly formed on the surface contacting the inclined portion (4) of the main body (1) and the upper end surface of the relay roof drain of the hat strainer (3) is circularly opened. In the strainer (3), the corrugated portion (7) is formed on the cylindrical portion by pressing. The corrugated plate-shaped corrugation (7) is arranged so that the peaks of the corrugated (7) are concentric with respect to the center (or with respect to the peripheral edge) on the inclined surface such as the slanted portion (4). A cylindrical portion such as the cylindrical portion of 3) is formed so as to be parallel to the lower end surface or the upper end surface of the opening.

The corrugation (7) may be formed on all parts, but it is preferable that the corrugation (7) is formed so that water does not stay on the inclined surface, and the corrugation (7) is intermittently formed to form a water flow path. It doesn't matter. Although not shown, the main body (1)
Also in the roof drain configured only with the strainer (3), the corrugation (7) can be formed partially or entirely.

[Embodiment 2] The embodiment shown in FIG.
In the reducer (5) of (1), a protrusion (8) is formed in an annular shape near the lower end and protruding toward the outer wall parallel to the lower end surface. The ridges (8) may be provided so as to protrude toward the inner wall side or both may be provided continuously.

[Embodiment 3] The embodiment shown in FIG. 3 is a strainer for a relay roof drain in which a circular opening is provided in the upper end surface of the strainer (3) so that a drain pipe of an upper roof or a veranda can be inserted. In 3), the ridges (8) projecting on the inner wall surface parallel to the upper end surface of the opening on the side wall of the strainer (3).
Is provided. The ridges (8) may be provided so as to project to the outer wall surface similarly to the second embodiment, or both may be provided continuously.

[Embodiment 4] The embodiment shown in FIG.
In the reducer (5) of (1), an annular body (9) formed of natural or synthetic resin is attached to the outer wall surface of the lower end, or a groove is formed in the lower end surface of the annular body (10) as shown in FIG. (11) is formed, and although not shown, the lower end edge of the reducer (5) is an annular body.
(10) It is mounted so as to be inserted into the groove (11). The annular body (9) molded from a natural or synthetic resin is preferably made of a soft rubber such as elastic rubber or soft polyethylene, but may be molded of a hard synthetic resin.
It should be noted that the annular body (9) may be mounted by forming a ridge (8) on the lower end of the reducer (5) as shown in FIG.

[Embodiment 5] The embodiment shown in FIG. 4 relates to a strainer (3) for a relay roof drain in which the upper end surface of the strainer (3) shown in Embodiment 3 is open, and is molded from natural or synthetic resin. Strainer (3)
It is fitted and attached to the upper end of the inner wall of the. Note that FIG.
Strainer the annular body (10) with the groove (11) as shown in Fig.
Even if it is attached to the upper edge of (3), the ring-shaped body (9), (10)
Although it has elasticity like Example 4, it may be molded from an outer hard synthetic resin. The matters shown in the embodiments of the present invention may be carried out individually or in combination with the roof drain.

[0018]

Since the present invention is constructed as described above, it has the following effects. In the roof drain according to claim 1, the corrugated plate-shaped corrugations are provided partially or entirely so that the main body, the inclined portion of the seat retainer, and the direction substantially perpendicular to the central axis of the substantially cylindrical reducer and strainer of the main body. Is expected to be improved, and therefore, a stainless steel plate thinner than conventional products can be used, and the cost can be reduced. In addition, when sandwiching the waterproof sheet, there was a risk of slipping on the conventional smooth stainless steel surface, but it can also be expected to have the effect of eliminating the risk of peeling off the connection surface with concrete, and the like. It also eliminates the risk of deforming the reducer and strainer of the main body.

In the roof drain according to the second aspect of the present invention, the substantially cylindrical reducer of the main body is formed with an annular projection so that the compressive strength is increased as in the first aspect and it is deformed during transportation and construction. There is no fear.

A roof drain according to a third aspect of the present invention relates to a roof drain for a relay, and as in the second aspect, since the strainer formed in the strainer in an annular shape is parallel to the upper end surface, the pressure resistance is improved, and the strain resistance for transportation and construction is improved. There is no fear of deformation.

In the roof drain according to the present invention, since the annular body made of natural or synthetic resin is attached to the lower end edge or the outer surface of the reducer of the main body, the pressure resistance is increased and the edge may be protected and deformed. It also disappears.
Further, since the annular body is interposed between the drain pipe and the reducer, there is no fear of generating noise even if the drain pipe vibrates.

A roof drain according to a fifth aspect of the present invention relates to a roof drain for relay use. Since the annular body formed of resin is attached to the upper edge of the strainer or to the upper end of the inner wall, it may be deformed during transportation or handling. Moreover, when the drainage pipe is inserted from the upper side, it is possible to expect an effect that noise is eliminated even if a gap is created between the drainage pipe and the annular body. Furthermore, by combining the items described in each claim of the present invention, it is possible to expect further improvement of the effect.

[Brief description of drawings]

FIG. 1 is an exploded side view showing a cutaway section of a left half of accessories such as bolts and nuts.

FIG. 2 is a side view showing a left half of a roof drain body of another embodiment in a cutaway section.

FIG. 3 is a side view showing a left half of a strainer of a relay roof drain of another embodiment in a cutaway section.

FIG. 4 is an assembled side view showing a left half of a strainer of a relay roof drain of another embodiment in a cutaway section.

FIG. 5 is a perspective view in which a part of the annular body is cut away.

[Explanation of symbols]

 1 Main Body 2 Sheet Presser 3 Strainer 4 Inclined Part 5 Reducer 6 Mortar Presser 7 Corrugated 8 Ridge 9 Annular Body 10 Annular Body 11 Groove

Claims (5)

[Claims] 1. A body comprising a funnel-shaped body (1) formed by stamping a stainless steel plate, an annular sheet retainer (2) and a hat-shaped strainer (3), or a body (1) and a strainer (3). In the roof drain thus formed, concentric circles from the center of the main body (1), seat retainer (2) and strainer (3),
Or a corrugated plate waveform that is parallel to the top or bottom surface
A roof drain characterized in that (7) is formed partially or entirely. 2. A main body (1) of a roof drain made of stainless steel plate, which is parallel to a lower end surface of a substantially cylindrical reducer (5) which is a connecting portion of the main body (1) with a drain pipe. A roof drain characterized in that a protrusion (8) protruding toward the outer wall side or the inner wall side is formed in an annular shape. 3. A strainer for a relay roof drain, which is made of a stainless steel plate and has a circular opening formed in the upper end surface of the strainer (3) so that a drain pipe from the upper portion can be fitted therein.
In (3), a roof drain characterized in that a side wall of the strainer (3) is formed with an annular projection (8) which is parallel to the upper end surface of the opening and projects to the outer wall surface or the inner wall surface. 4. A roof drain body (1) formed of a stainless steel plate, and an annular body (9) formed of a natural or synthetic resin on an outer surface or a lower edge of a reducer (5) to which a drain pipe is connected. Alternatively, a roof drain having an annular body (10) with a groove (11) attached thereto. 5. A strainer (3) for a roof drain for relay, which is formed from a stainless steel plate, wherein the strainer is used.
An annular body (9) or a annular body (10) with a groove (11) formed by molding a natural or synthetic resin on the upper end or upper edge of the inner wall of (3)
A roof drain that is equipped with.