JP2000080769A - Drain - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obviate the intrusion of dust, and to prevent hindrance due to the inflow of drain. SOLUTION: The drain compeises a drain body having a downward drain passage 4 at a central section and a large-diametral upper edge section at an upper end and a cover covering the upper section of the drain body, being formed in a projecting shape towards an upper section and having drain inflow ports 29 so that drain is flowed into the projecting sections from the outside. Outer circumferential sections 27 and inner circumferential sections 28 having specified length extending over the vertical direction while being alternately formed in the cover radial direction at regular intervals along the cover circumferential direction are formed to the peripheral surfaces of the projecting sections, and the drain inflow ports 29 are formed among the outer circumferential sections 27 and the inner circumferential sections 28 at that time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain into which dust such as pine needles and twigs do not flow.

[0002]

2. Description of the Related Art Drains used for drains on roofs of buildings and verandas on each floor are products formed by integral molding of cast iron, aluminum die-casting or synthetic resin. An example of such drains is shown in FIG. 10 to FIG.

The drain 1 shown in FIGS. 7 to 10 is composed of a drain main body 2 attached to the floor surface and a cover 3 covering the drain main body 2 from above.

The drain main body 2 has a large-diameter upper edge 6 provided on a cylindrical portion 5 having a drainage passage 4 at the center, and the large-diameter upper edge 6 has a tapered shape extending upward at the upper end of the cylindrical portion 5. And an outer peripheral portion 8 that extends further outward in the radial direction of the cylindrical portion 5 from the inclined surface 7 and slightly inclines upward. A plurality of (three in FIG. 7) mounting portions 9 having bolt holes symmetrically with respect to the axis of the cylindrical portion 5 are provided on the surface of the inclined surface 7, and the position of the mounting portion 9 corresponds to the circumference of the cover. A plurality of (three in FIG. 7) flow dividing walls 10 are provided on the surface of the inclined surface 7 located inside the cover circumference on the diameter line and the inner wall of the cylindrical portion 5.
Has been established. Further, between the plurality of mounting portions 9 on the surface of the inclined surface 7, fence members 11 are erected at predetermined intervals radially around the axis of the cylindrical portion 5 at predetermined intervals. .

A cover 3 for covering the upper part of the drain body 2
Is a frusto-conical cover 12 with a slightly rounded top.
And the drain body 2 located around the lower end of the cover 12.
And a flange-shaped peripheral portion 13 which is one size smaller than the large-diameter upper edge portion 6 of the cover portion. The plurality of attachment portions 14 (three in FIG. 8) provided
Is provided so as to protrude inward.

On the conical inclined surface of the cover part 12, a long and slender first drainage inlet 15 is provided in the upper part from the truncated top part to the flange-shaped peripheral part 13 in the upper part and the lower part in the lower part. An adjacent small-diameter second drainage inlet 16 is formed, and the first drainage inlet 15 and the second drainage inlet 16 are connected to the cover 12.
Are provided at predetermined intervals so as to be located between the mounting portions 14 along the circumferential direction of the cone. In addition, only a slightly shorter first drainage inlet 15 is provided above the mounting portion 14, and a small hole 17 is formed in the center of the truncated top surface. A plurality of petals-like holes 18 are formed in the portion in the radial direction.

When the drain body 2 is mounted on a floor such as a veranda, as shown in FIG. 8, the lower end of the cylindrical portion 5 having the drain passage 4 is fitted in the drain pipe 19 to communicate therewith. After the upper edge of the large-diameter upper edge 6 is aligned with the surface of the floor, a caulking material is filled between the cylindrical portion 5 and the drainage pipe 19 to close the gap. The mortar is injected into the gap between the drainage part of the mortar and solidified and attached to the floor. Subsequently, when attaching the cover 3 to the drain body 2, after covering the outer peripheral portion 8 with the waterproof sheet 20 laid on the floor, the bolt holes of the attaching portion 9 of the drain body 2 and the bolts of the attaching portion 14 of the cover 3 are attached. The cover 3 is covered on the large-diameter upper edge 6 of the drain body 2 so that the holes overlap, and the cover 3 and the drain body 2 are bolted together.

When the cover 3 is attached to the drain body 2, the fence member 11 is located at the second drainage inlet 16 of the cover 3 inside the cover radial direction as shown in FIG. The second drainage inlet 16 blocks the cover radial direction and has a gap in the cover circumferential direction.

When drainage flows into drain 1 due to rain or water sprinkling, first drainage inlet 15 and second drainage inlet 16
Drainage enters the drainage pipe 19 through the drainage passage 4. At this time, the wastewater flowing into the drain 1 collides with the flow dividing wall 10 and flows smoothly into the drain pipe 19 after being diverted, so that it is possible to prevent the occurrence of the overflow state caused by a large amount of wastewater such as rainwater.

At the second drainage inlet 16 of the cover 3, since the fence is double-turned by the fence member 11 of the drain main body 2, as shown in FIG. Even if water flows, the second drainage inlet 1
In 6, the inflow of dust 21 can be prevented.

[0011]

SUMMARY OF THE INVENTION However, FIGS.
In the drain 1 shown in FIG. 10, as shown in FIG. 10, since there is nothing to prevent the ingress of dust 21 at the first drainage inlet 15, dust 21 such as pine needles and twigs is clogged in a bird's nest inside the drain 1, In addition, there is a problem that the inflow of drainage is obstructed.

The present invention has been made in view of the above circumstances, and has as its object to prevent dust from entering the inside of a drain and prevent obstruction of inflow of drainage.

[0013]

According to a first aspect of the present invention, there is provided a drain body having a downward drain passage at a central portion and a large-diameter upper edge at an upper end, and covering an upper portion of the drain body. A drain having a cover formed with an upwardly convex shape and provided with a drainage inlet for allowing drainage to flow into the convex portion from the outside, wherein the drain has a predetermined length in a vertical direction on a peripheral surface of the convex portion. The outer peripheral portion and the inner peripheral portion are alternately formed in the cover radial direction at predetermined intervals along the cover peripheral direction, and a drainage inlet is formed between the outer peripheral portion and the inner peripheral portion. Drain, which is a feature of the invention.

According to a second aspect of the present invention, there is provided the drain according to the first aspect, further comprising a dust stopper extending vertically and protruding inward from the rear surface of the outer peripheral portion of the cover. It is related.

According to a third aspect of the present invention, at least one of the outer peripheral portion and the inner peripheral portion is formed so that the central portion is curved in a convex or concave shape toward the inside of the cover. Or the drain according to 2.

According to the present invention, when drainage flows into the drain due to rain or water sprinkling, water enters through the drainage inlet and flows into the drainage pipe through the drainage passage. At this time, the inner peripheral portion prevents trash such as pine needles and twigs from entering the drain to block the cover radial direction of the drain passage located between the outer peripheral portion and another adjacent outer peripheral portion. As a result, it is possible to prevent the inflow of wastewater from being hindered by garbage.

When a dust stopper extending vertically and protruding inward from the cover is provided on the rear surface of the outer peripheral portion of the cover, the dust stopper is provided between the outer peripheral portion and the inner peripheral portion in the circumferential direction of the cover. Since the drain passage is blocked, it is possible to further prevent dust from entering the inside of the drain.

At least one of the outer peripheral portion and the inner peripheral portion is
If the central part is formed so as to curve in a convex or concave shape toward the inside of the cover, in the case of the convex shape, even if dust such as pine needles and twigs flow, it will follow the surface of the outer peripheral part and the inner peripheral part Because it stops at the curved part without flowing, dust can be further prevented from entering the inside of the drain, and in the case of a concave shape, the appearance can be seen beautifully and there are few deburring points and cost Can be reduced.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 4 show a drain 22 according to a first embodiment of the present invention.
The parts denoted by the same reference numerals as those of the above indicate the same items.

The drain 2 shown in FIGS.
2 includes a drain main body 23 attached to the floor surface, and a cover 24 covering an upper part of the drain main body 23.

The drain main body 23 is provided with a large-diameter upper edge 6 in a cylindrical portion 5 having a drain passage in the center, and the large-diameter upper edge 6 has a tapered shape extending upward at the upper end of the cylindrical portion 5. It is formed of an inclined surface 7 and an outer peripheral portion 8 which extends further outward from the inclined surface 7 in the radial direction of the cylindrical portion 5 and is slightly upward. A plurality of (three in FIG. 1) attachment portions 9 are provided symmetrically about the axis of the cylindrical portion 5 on the surface of the inclined surface 7.
A plurality (three in FIG. 1) of flow dividing walls 10 are provided upright on the surface of the inclined surface 7 and the inner wall of the cylindrical portion 5 located on the inner side of the circumference of the cover on the diameter line of the cover circumference. I have.

A cover 24 for covering the upper part of the drain main body 23 has a frusto-conical cover part 25 whose top is formed slightly wider, and a large diameter of the drain main body 23 which is located around the lower end of the cover part 25. And a flange-shaped peripheral portion 26 which is slightly smaller than the edge portion 6. The peripheral surface of the cone of the cover portion 25 has a predetermined length up and down from the truncated top to the flange-shaped peripheral portion 26. An outer peripheral portion 27 that is provided and that is alternately formed in the cover radial direction so as to press a plurality of locations on the surface of the cover portion 25 inward at predetermined intervals along the cover circumferential direction.
And an inner peripheral portion 28, and a drainage inlet 29 is formed between the outer peripheral portion 27 and the inner peripheral portion 28. A small circular hole 30 is formed at the center of the truncated top surface, and a plurality of petal-shaped holes 31 are formed radially outward of a peripheral portion of the small circular hole 30.

The outer peripheral portion 27 and the inner peripheral portion 28 each have a central portion curved in a convex shape inward of the cover circumference so as to have a curvature larger than the curvature of the cover portion circumference in a horizontal cross section. A cover 24 is provided at the center of the rear surface of the outer peripheral portion 27.
A dust stopper 32 is provided which extends vertically from the top of the cover portion to the flange-shaped peripheral portion 26 and projects toward the center of the cover portion 25 in the cover radial direction in the horizontal cross section of the cover portion 25.

At a plurality of lower portions of the outer peripheral portion 27 of the cover portion 25, a plurality of mounting portions 33 (three in FIG. 1) having bolt holes project symmetrically around the axis of the cone into the inside of the cover 24. Is provided.

When the drain body 23 is mounted on a floor such as a veranda, as shown in FIG. 2, the lower end of the cylindrical portion 5 having the drain passage 4 is fitted in the drain pipe 19 so as to communicate therewith. After the upper edge of the large-diameter upper edge 6 is aligned with the surface of the floor, a caulking material is filled between the cylindrical portion 5 and the drain pipe 19 to close the gap.
The mortar is injected into the gap between the outer surface of the lower surface and the drain port of the floor and solidified and attached to the floor. continue,
When attaching the cover 24 to the drain main body 23, after covering the outer peripheral portion 27 with the waterproof sheet 20 laid on the floor, the bolt holes of the attaching portion 9 of the drain main body 23 and the bolt holes of the attaching portion 33 of the cover 24 overlap. Cover 24 to cover the large-diameter upper edge 6 of the drain body 23,
The cover 24 and the drain body 23 are bolted together.

The operation of the first embodiment of the present invention will be described below.

When drainage flows into the drain 22 due to rain or water sprinkling, the drainage flows into the other outer peripheral portion 2 adjacent to the outer peripheral portion 27.
7 and flows into the drain pipe 19 from the drainage inlet 29 between the outer peripheral portion 27 and the inner peripheral portion 28 through the gap between the dust stopper 32 and the inner peripheral portion 28. At this time, the drainage flowing into the drain 22 collides with the flow dividing wall 10 and flows smoothly into the drain pipe 19 after being diverted, thereby preventing the occurrence of a flooding state caused by a large amount of drainage due to rainwater or the like.

When dust 21 such as pine needles or twigs flows along with the drainage, the inner peripheral portion 28 is formed so as to block the drainage passage in the cover radial direction between the outer peripheral portion 27 and another adjacent outer peripheral portion 27. As shown in FIG.
The dust 21 can be prevented from entering the inside of the inside, and as a result, the obstruction of the inflow of wastewater by the dust 21 can be prevented.

The dust stopper 32 is formed so as to block the drain passage in the cover circumferential direction between the outer peripheral portion 27 and the inner peripheral portion 28, so that the dust 21 can be prevented from entering the drain 22. Can be prevented.

Further, since the outer peripheral portion 27 and the inner peripheral portion 28 have a central portion curved in a convex shape inward of the cover circumference,
Even when garbage 21 such as pine needles and twigs flow,
It does not flow along the surfaces of the outer peripheral portion 27 and the inner peripheral portion 28 and stops at the curved portion, so that the dust 21 can be further prevented from entering the inside of the drain 22.

FIGS. 5 and 6 show drains showing a second example and a third example of the embodiment of the present invention.
4 to 4 represent the same parts.

In the second example, the drain body is substantially the same as the first example, and the outer peripheral portion 34 and the inner peripheral portion 35 of the cover have different shapes from the first example. is there.

The outer peripheral portion 34 and the inner peripheral portion 35 of the second example each have a central portion curved concavely inwardly of the circumference so as to have a curvature greater than the curvature of the circumference of the cover portion in a horizontal cross section. A central portion of the back surface of the outer peripheral portion 34 extends vertically from the top of the cover to the flange-shaped peripheral portion 26, and faces the center of the cover portion in the cover radial direction in a horizontal cross section of the cover portion. And a dust stopper 36 projecting therefrom.

The drain body is mounted on a floor or the like in substantially the same manner as in the first example, and the cover is bolted to the drain body.

The operation of the second embodiment of the present invention will be described below. When drainage flows into a drain due to rain or water sprinkling, drainage from drainage inlet 37 is substantially similar to the first example. Penetrates and flows into the drain pipe through the drain passage.

Even when dust such as pine needles and twigs flow along with the drainage, the inner peripheral portion 35 blocks the drainage passage in the cover radial direction between the outer peripheral portion 34 and another adjacent outer peripheral portion 34. The dust stopper 36 is formed so as to block the drain passage in the cover circumferential direction between the outer peripheral portion 34 and the inner peripheral portion 35, so that dust can be prevented from entering the inside of the drain, As a result, it is possible to prevent the inflow of wastewater from being hindered by dust.

Further, since the outer peripheral portion 34 and the inner peripheral portion 35 are curved outward in the center at the central portion, the appearance can be beautifully displayed like a flower bud. In the one-piece molding for manufacturing, there are few burrs and the cost can be reduced.

In the third example, the drain body is substantially the same as the first example, and the outer peripheral portion 38 and the inner peripheral portion 39 of the cover have different shapes from the first example.

The outer peripheral portion 38 and the inner peripheral portion 39 of the third example are
As in the first example, the central portion is curved convexly inward of the cover circumference so as to have a curvature larger than the curvature of the circumference of the cover portion in the horizontal cross section, and the dust stopping portion is provided. Not something.

The drain body is attached to a floor or the like in substantially the same manner as in the first example, and the cover is bolted to the drain body.

The operation of the third embodiment of the present invention will be described below. When water flows into the drain due to rain or water sprinkling, the water flows from the drain inlet 40 in substantially the same manner as in the first embodiment. Penetrates and flows into the drain pipe through the drain passage.

Even when dust such as pine needles or twigs flows along with the drainage, the inner peripheral portion 39 blocks the drainage passage in the cover radial direction between the outer peripheral portion 38 and another adjacent outer peripheral portion 38. Since it is formed, it is possible to prevent dust from entering the inside of the drain, and as a result, it is possible to prevent the flow of wastewater from being inhibited by the dust.

Further, since the shape of the cover is simple, there are few burrs in the integral molding for manufacturing the cover.
The cost can be further reduced.

The present invention is not limited to the embodiment shown and described, but the dust stoppers 32 and 36 project outward on the surfaces of the inner peripheral surfaces 28 and 35 in the radial direction of the cover. And the outer peripheral surfaces 27, 3
4, 38 and the curvature of the inner peripheral surfaces 28, 35, 39 and the shape of the dust stoppers 32, 36 are determined by the dust 21 such as pine needles and twigs.
Of course, any shape may be used as long as it prevents intrusion, and various changes may be made without departing from the spirit of the present invention.

[0046]

According to the drain of the present invention, various excellent effects can be obtained as described below.

I) According to the present invention, when drainage flows into the drain due to rain or water sprinkling, the inner peripheral portion covers the drainage passage located between the outer peripheral portion and another adjacent outer peripheral portion. In order to block the radial direction, dust such as pine needles and twigs can be prevented from entering the inside of the drain, and as a result, it is possible to prevent obstruction of inflow of drainage due to dust.

II) If a dust stopper is provided on the rear surface of the outer peripheral portion of the cover and extends vertically and protrudes toward the inside of the cover, the dust stopper is provided on the periphery of the cover between the outer peripheral portion and the inner peripheral portion. Since the drainage passage in the direction is blocked, it is possible to further prevent dust from entering the inside of the drain.

III) If at least one of the outer peripheral portion and the inner peripheral portion is formed so that the central portion is curved in a convex or concave shape toward the inside of the cover, in the case of the convex shape, pine needles or twigs are formed. Even if dust such as flows, it does not flow along the surface of the outer peripheral portion and the inner peripheral portion and stops at the curved portion, so that it is possible to further prevent dust from entering the inside of the drain. In the case of (1), the appearance can be made to look beautiful, and the number of deburring portions can be reduced, thereby reducing the cost.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing a first embodiment of a drain according to the present invention.

FIG. 2 is a longitudinal sectional view showing a case where the drain of the present invention is mounted on a floor.

FIG. 3 is a horizontal sectional view of a cover in the drain of the present invention.

FIG. 4 is a horizontal cross-sectional view showing a state in which dust such as pine needles and twigs has stopped on the outer peripheral portion and the inner peripheral portion of the cover in the drain of the present invention.

FIG. 5 is a horizontal sectional view of a cover in a second example of the embodiment of the drain according to the present invention.

FIG. 6 is a horizontal sectional view of a cover according to a third embodiment of the drain of the present invention.

FIG. 7 is a partially cutaway perspective view of a conventional drain.

FIG. 8 is a longitudinal sectional view when a conventional drain is mounted on a floor.

FIG. 9 is a horizontal sectional view showing a state in which dust such as pine needles and twigs stops at the position of the second drain passage opening of the cover in the conventional drain.

FIG. 10 is a horizontal cross-sectional view showing a state in which dust such as pine needles or twigs has entered the inside of a conventional drain.

[Explanation of symbols]

 2 Drain main body 4 Drain passage 6 Large-diameter upper edge 27 Outer peripheral part 28 Inner peripheral part 29 Drainage inlet 32 Dust stopper 34 Outer peripheral part 35 Inner peripheral part 36 Dust stopper 37 Drainage inlet 38 Outer peripheral part 39 Inner peripheral part

Claims (3)

[Claims] 1. A drain body having a downwardly directed drain passage in a central portion and a large-diameter upper edge at an upper end, and a convex portion which covers an upper portion of the drain body and is formed to be convex upward. A drain comprising a cover provided with a drainage inlet for allowing drainage to flow in from the outside, wherein the drain has a predetermined length in a vertical direction on a peripheral surface of the convex portion and a predetermined interval along a circumferential direction of the cover. A drain having an outer peripheral portion and an inner peripheral portion formed alternately in the cover radial direction, and a drainage inlet formed between the outer peripheral portion and the inner peripheral portion. 2. The drain according to claim 1, wherein a dust stopper is provided on a rear surface of an outer peripheral portion of the cover, the dust stopper extending vertically and protruding inward of the cover. 3. The drain according to claim 1, wherein at least one of the outer peripheral portion and the inner peripheral portion is formed such that a central portion is curved in a convex or concave shape toward the inside of the cover.