JP3009378B2 - Drain mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain mechanism at a portion where water in a drain ditch flows into a drain pipe.

[0002]

2. Description of the Related Art It is generally known that a drain is formed on the roof or ground of a building, an opening is formed at the bottom of the drain, and a drain pipe is connected to the opening. in this case,
Conventionally, as shown in the drawing of Japanese Patent Application Laid-Open No. 8-270159, an inner cylindrical portion 5 with a flange 4 sandwiching a waterproof surface material 1 is provided.
And the outer cylinder part 7 are inserted inside the drain pipe, and a plurality of fixing bolts 8 inserted from the inner peripheral side of the inner cylinder part 5 are fastened and fixed to nuts 15 of the outer cylinder part 7.

[0003]

However, according to the above configuration, since there are a plurality of fixing bolts 8, the mounting operation is troublesome. In addition, since the fixing bolt 8 is attached near the inner peripheral edge of the inner cylindrical portion 5, when the fixing bolt 8 is screwed in, a greater tightening force acts on the vicinity than at a portion away from the fixing bolt 8, so that the flange 4 is attached. It is deformed, the holding force of the waterproof face material 1 is biased, and deformation is likely to occur at a portion that comes into contact with the drain pipe. In addition, since the drain port was merely a hole formed in the face material 1, water leakage sometimes occurred.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a drain mechanism which can solve the above-mentioned drawbacks, can be easily mounted, can effectively prevent water leakage, and can safely perform inspection work and the like.

[0005]

In order to solve the above-mentioned problems, a drain mechanism according to the present invention comprises a donut plate-shaped base at an open end of a drain pipe opening to a drain of a drain provided in a building. Abutting, fixing the base to the building frame, arranging the periphery of the drainage port via packing on the base, and arranging a donut plate-shaped holding plate thereon, and holding the holding plate A fixing bolt is screwed into a suspension member suspended in the central opening of the above and a bolt receiver provided in the drain pipe.

In addition, an inverted cage-shaped strainer is arranged on the upper part of the holding plate, and a blade-like leg is formed on the lower periphery of the strainer, so that the water flowing inside the leg flows in a spiral shape. May be configured so that a line drawn in the radial direction from the center of the angled portion inclines the angle with respect to the leg in a certain direction.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 denotes a drain. The drain groove 1 is formed of a waterproof surface material 2 (including a sheet) made of a metal such as iron, stainless steel, copper or the like, or a synthetic resin such as vinyl chloride or asphalt, as shown in FIG. The drain port 3 has an inner end that hangs at right angles to the groove bottom to form a cylindrical portion 4, which is fitted inside the open end of the drain pipe 5.

Next, as shown in FIG. 2, a fixed rod 6 is arranged and fixed in the diameter direction inside the vicinity of the upper end of the drain pipe 5. A nut-shaped bolt receiver 7 is formed at the center of the fixed rod 6.

At the upper end of the drain tube 5, an inner peripheral edge of a donut plate-shaped base 8 is arranged in contact. The base 8 is fixed to a C-shaped channel material 9 provided in a building body by screws or the like. What fixes the base 8 is not limited to the channel material. Angle material or H-shaped steel may be used.

On the base 8, a back surface of the peripheral portion of the drain port 3 of the waterproof face material 2 is disposed via a packing 10 such as neoprene.

Next, a donut-shaped holding plate 11 is arranged on the front side of the groove bottom. At the center opening of the holding plate 11, two elongated plate-shaped suspension members 12 are assembled in a cross shape and suspended. A fixing bolt insertion hole 14 is formed at the center intersection of these suspension members 12.

A fixing bolt 13 is inserted through the insertion hole 14, and the tip of the fixing bolt 13 is screwed to the bolt receiver 7 of a cylindrical body. Due to the tightening force of the fixing bolt 13, the waterproof face material 2 is separated from the drain pipe 5 through the packing 10 and the base 8.
It is strongly pressed and fixed to the upper end of. Thereby, the drain mechanism is completed.

As described above, since the drain mechanism has a structure in which the outer peripheral edge of the base 8 which is in contact with the upper end of the drain pipe 5 is fixed to the frame, the inner peripheral edge is hardly deformed. In addition, since the fixing plate 13 is used to tighten the holding plate 11 from the center, the tightening force is not biased. For this reason, the base 8 and the holding plate 11 are not easily deformed, and a gap is hardly generated between these members. Therefore, it is possible to effectively prevent water leakage.
Moreover, since the inner end 4 of the opening of the waterproof face material 2 is formed in a cylindrical shape and is fitted inside the drain pipe 5, the effect of preventing water leakage is further improved.

Next, the work of tightening the member can be performed with one fixing bolt, and the holding plate 11 and the packing 10 can be removed and disassembled by loosening the fixing bolt 13 with one tool such as a wrench. Therefore, installation and maintenance work can be easily performed.

Further, since the cruciform suspension member 12 of the holding plate 11 is suspended in the diametrical direction with respect to the opening of the holding plate 11, the operator can inspect and maintain the drainage groove 1 and its surroundings. It is possible to effectively prevent an accident that the foot slips into the drain port 3 when performing the operation, and it is safe.

Furthermore, since the number of parts is small, the construction work is easy and the cost is low, and the possibility of accidents of falling parts can be minimized.

When the base 8 is attached to the skeleton, the base 8 may be screwed below the structuring member 14 as shown in FIG. In the figure, reference numeral 2 denotes a waterproof surface material, and 15 denotes a heat insulating material.

Next, FIG. 4 shows an example in which a strainer (dustproof net) 16 is further provided above the holding plate 11. As shown in FIGS. 5 (a) and 5 (b), the strainer 16
A plurality of blades 18 formed in the shape of a letter are projected radially, and the lower part of each blade 18 is fixed inside an annular fixed band 19 to form an inverted cage. The lower end of each blade 18 is formed so that the angle with respect to a line drawn in the radial direction from the center of the strainer 16 is not a right angle but is inclined in a certain direction. A hole is formed in the center of the disk.

In mounting the strainer 16, the blades 18 of the strainer 16 are arranged on the periphery of the holding plate 11, and the bolts 20 are inserted into holes of the disc 17 to
The hook 21 at the end of the bolt 20 may be hooked on the fixing rod 6 of the drain pipe 5 and the head of the bolt 20 may be fastened with the ginkgo nut 21.

By attaching the strainer 16,
Dead leaves and other debris cannot enter inside the blades 18 of the strainer 16, so that the drain tube 5 is effectively prevented from being clogged, and drainage is performed smoothly.

The drainage flowing along the drainage groove 1 hits the lower end of the blade 18 of the strainer 16, but since this portion is angled, the water flowing into the strainer 16 is as shown in FIG. 5 (b). Since the flow is rectified so as to change the direction of the flow in a direction deviated outward from the center as indicated by the arrow, the water flows into the drain port 3 in a spiral shape. Therefore,
Drainage can be made smoother, and the flow velocity becomes faster, so that more dust such as sand can flow into the drain pipe 5 than before, so that the waterproof face plate does not rust due to dust accumulation and durability. Is improved.

Note that, as shown in FIG.
A spiral flow can also be generated by providing a straightening plate 23 having a fixed angle above the suspension member 12.

[Brief description of the drawings]

FIG. 1 is a sectional view of a drain mechanism according to the present invention.

FIG. 2 is an exploded perspective view of the drain mechanism.

FIG. 3 is an explanatory view of another mounting mode of the base.

FIG. 4 is a sectional view showing a state where a strainer is attached to the drain mechanism.

5 (a) and 5 (b) are side and bottom views of the strainer.

FIGS. 6 (a) and (b) are a plan view and a side view of a part of a state in which a current plate is provided on a holding plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drainage groove 3 Drain port 5 Drain pipe 7 Bolt receiver 8 Base 10 Packing 11 Holding plate 12 Suspension plate 13 Fixing bolt 16 Strainer 18 Blade

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-270159 (JP, A) JP-A 62-137937 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04D 13/04 E03C 1/12-1/26

Claims (2)

(57) [Claims] 1. A donut plate-shaped base abuts on an open end of a drain pipe opening to a drain port of a drain provided in a building, and the base is fixed to a building body of the building, and the base is fixed on the base. A peripheral portion of the drainage port is disposed via packing, and a donut plate-like pressing plate is disposed thereon, and a suspension member suspended at a central opening of the pressing plate and a bolt receiver provided on the drain pipe are provided. A drain mechanism wherein a fixing bolt is screwed into the drain mechanism. 2. An inverted basket-shaped strainer is arranged on the upper part of the holding plate, and a blade-like leg is formed on a lower peripheral edge of the strainer, so that water flowing around the inside of the leg flows in a spiral shape. 2. The drain mechanism according to claim 1, wherein a line drawn in the radial direction from the center of the sloping portion tilts an angle with respect to the leg in a fixed direction.