JPH086914Y2 - Roof drain for snowfall - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention mainly relates to a roof drain for a snowy area mounted on the roof of a building, more specifically, the roof drain body is a stainless steel plate for warm areas where it does not snow. The present invention relates to a roof drain for snowfall without processing a rooftop roof drain made of steel.

(Prior art) Conventionally, cast iron roof drains have been used for draining rooftops of buildings. Recently, cast iron roof drains are apt to corrode, especially in snowy countries. Especially when the strainer is corroded and damaged, on-site processing is required. Because of the drawbacks such as incompatibility that cannot be repaired without doing so, roof drains made by stamping and assembling lightweight stainless steel plates that are also compatible with corrosion and are easy to handle are widely used. However, in a snowfall area, the roof drain is filled with snow, and the snow melted water may freeze at the roof drain part due to the decrease in nighttime temperature and cannot be drained.For this reason, as shown in JP-B-63-36111, Freezing prevention caps have been proposed, and more
No. 35638 proposes a roof drain in which a cap is integrally attached to a special strainer.

(Problems to be solved by the invention) A roof drain used in a snowy area is attached with a cap for preventing freezing so as to cover the roof drain in order to prevent freezing. The roof drain, which has a cap integrally attached to the roof drain body, etc., is specially manufactured as a roof drain for snowfall areas, so inventory is inevitable and expensive. The advent of easy and non-corrosive roof drains for snowfall areas has become sought after.

(Means for Solving the Problem) The present invention has been made as a result of study to answer such a request, and is punched from a stainless steel plate which has been widely used not only in a snowy area but also in a warm area. The roof drain that is molded and processed and assembled can be used as it is without processing, and the bolts and nuts that are used to assemble and connect the strain bell to the strainer and the through holes that are drilled in the strainer are used. Then, after mounting the dome mounting bracket to the strainer using bolts and nuts, the bell-shaped dome made of the same stainless steel plate is positioned so that the lower edge of the dome is near the upper end of the mortar retainer of the roof drain, This is achieved by mounting the mortar retainer in a floating state without blocking the notch of the mortar retainer by using the mounting bracket.

(Function) The dome installed so as to cover the roof drain prevents snow from directly contacting and filling the strainer of the roof drain during snowfall, and since a gap is created between the dome and the strainer, the snowmelt water passes through the strainer. It is drained without accumulating.

(Example) The present invention will be described according to an example shown in the drawings.

Example 1 As shown in FIG. 1, a funnel-shaped main body (1) formed from a stainless steel plate and a mortar retainer (4) having V-shaped notches formed at equal intervals over the entire circumference were provided. An annular waterproof sheet retainer (2) bulged on the outer peripheral edge and a hat-shaped strainer (3) having through holes on the upper and side surfaces are provided.
The waterproof sheet retainer (2) is attached to each of the bolts raised on the main body (1) using a nut, and then the nut (6) is attached to the bolts (5) raised inside the mortar retainer of the waterproof sheet retainer (2). Using a roof drain for rooftop that is used in warm climates to combine and assemble the strainer (3), a bell-shaped dome (7) that is larger than the outside diameter and height of the strainer (3) and its lower edge is used. Make sure that (8) does not block the V-shaped notch provided in the mortar retainer (4) of the waterproof sheet retainer (2) and that there is a gap between the roof drain and the lower side of the lower edge (8). , L installed using bolts (5) and nuts (6) for mounting the strainer (3) (usually raised at three positions divided into three equal parts)
It is fixed by a V-shaped mounting bracket (10). That is, a bolt hole or a notch into which a bolt is inserted is provided on the lower side of the L-shaped fitting (10), and a screw hole (11) is provided near the upper end of the other side, and the fitting (10) is attached to the strainer (3). ) The fixture is fixed by using the bolt (5) and nut (6), and the through hole (12) is provided on the side wall of the dome (8).
The dome (8) is fastened and fixed to the screw hole (11) of the fitting (10) with the screw (13).

Example 2 Similar to Example 1, a roof drain for rooftop used in a warm region was used, and as shown in FIG. 3, a through hole (9) formed in the top surface of the strainer (3) was used to As shown in Fig. 4, bolt insertion holes (17) (17) are formed at both ends of a strip-shaped flat plate (15) so as to match the through holes (9) of the strainer (3).
A mounting bracket (14) having a bolt (16) and a ridge formed by welding or the like so as to have an inverted T shape is attached to the strainer (3) with bolts, nuts, etc. in advance in the central portion thereof, and as shown in FIG. In the same way as shown, fix the strainer (3) to the mounting bolt (5) that is raised on the waterproof sheet retainer with the nut (6),
Mounting bracket (14) in the through hole provided at the center of the top of the dome (7)
The bolt (16) that is raised in the center of the is inserted and fixed using a nut.

In the first and second embodiments, the dome (7) has a bell-shaped cylindrical shape with an open lower surface, but a hollow hemispherical shape with an open lower surface or a truncated cone shape may be used. However, any shape may be used as long as it forms a space between the strainer (3) and the dome (7).

Further, the mounting metal fitting of the dome (7) is not limited to those in the first and second embodiments, and the mounting metal fitting which can be mounted by using the bolt for mounting the strainer (3) or the through hole of the strainer (3). So long as it has any shape.

(Effect of the Invention) Since the present invention is configured as described above, the dome and the mounting bracket may be manufactured in accordance with the roof drain for the rooftop in the warm region. It is cheaper than the one that has been designed and assembled, and the dome can be mounted by fixing the mounting bracket by using the bolts for mounting the strainer of the roof drain or the through holes of the strainer. This is advantageous in that it can be carried out easily without any operation, and that the whole is molded and assembled from a stainless steel plate, it is lightweight and convenient to handle, and there is no risk of corrosion.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the invention. FIG. 1 is a side view showing the left half in section and the dome is removed, and FIG. 2 is a part showing another embodiment. FIG. 3 is a side view showing a cross section, FIG. 3 is a perspective view of the strainer, and FIG. 4 is a perspective view of only the mounting bracket shown in FIG. 1 ... Main body, 2 ... Sheet retainer, 3 ... Strainer, 4 ... Mortar retainer, 5 ... Bolt, 6 ... Nut, 7 ... Dome, 8 ...
Lower edge, 9 ... Through hole, 10, 14 ... Mounting bracket.

Claims (2)

[Scope of utility model registration request] 1. A funnel-shaped main body (1) formed by molding a stainless steel plate, and a mortar retainer (4) having V-shaped notches formed at equal intervals over the entire circumference is provided on the outer peripheral edge. A rooftop roof drain for warm regions, which includes a waterproof sheet retainer (2) and a strainer (3) having through holes on the upper and side surfaces, and has an outer diameter larger than that of the strainer (3) and a high height. The bell-shaped dome (7) is attached to the strainer (3) using bolts (5) and nuts (6) to attach the L-shaped mounting bracket (10) to the lower edge of the dome (7). The roof drain for a snowy area, characterized in that (8) is installed near the upper edge of the mortar retainer (4) without blocking the notch of the mortar retainer (4) of the waterproof sheet retainer (2) and in a floating state. . 2. A through hole (17) according to the through hole (9) of the strainer (3) of the roof drain for roof, instead of the mounting metal fitting (10) of the bell-shaped dome (7) according to claim 1. Attach a bolt (1) to the center of a rectangular flat plate (15) with (17) drilled at both ends.
Attach the mounting bracket (14), which is formed by welding the 6) to the flat plate (15) so as to form an inverted T shape, through the through hole (9) of the strainer (3).
A roof drain for snowfall, characterized in that the dome (7) is fixed in advance with bolts and nuts.