JP3050785B2 - Drain cap - 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 cap provided at an upper end of a drainage hole of a building.

[0002]

2. Description of the Related Art A drain for draining rainwater is installed at a roof of a building such as a building or an apartment or at an upper end of a drainage hole provided on a veranda on each floor. At the same time, a drain cap is provided to prevent dust and fallen leaves from being introduced into the drain, to prevent the opening from being exposed, and to improve the appearance.

FIGS. 8 and 9 show an example of a conventional drain.
21 is a hollow cylindrical outer cylinder vertically inserted into the upper end of a vertically extending drain hole 22, 23 is a hollow cylindrical inner cylinder screwed concentrically into the outer cylinder 21, and 24 is A drain cap provided integrally with the inner cylinder 23 above the inner cylinder 23 so as to protrude above the floor surface 25 of the roof or the veranda;
26 is a packing sheet interposed between the floor surface 25 and the flange 21a formed at the upper end of the outer cylinder 21 so as to surround the outer cylinder 21, and 27 is a packing sheet for the flange 21a of the outer cylinder 21 and the inner cylinder 23 at the drain installation portion. The waterproof sheet is sandwiched between the flange 23a and covers the floor surface 25.

The drain cap 24 is disposed at a predetermined interval in the circumferential direction of the inner cylinder 23 and has a plurality of support legs 24a whose lower ends are integrally connected to the upper end of the inner cylinder 23; A drain cap main body 24b is integrally connected to the upper end, and the drain cap main body 24b is provided with a plurality of rainwater introduction holes 24c and 24d.

The rainwater 28 is guided into the gap between the rainwater introduction holes 24c and 24d of the drain cap main body 24b and the support legs 24a, flows into the inner cylinder 23 of the drain, and flows downward from the inner cylinder 23 through the outer cylinder 21. Flow down to

[0006] Also, dust and fallen leaves can be removed with a drain cap 2
4 prevents flow into the inner cylinder 23.

FIGS. 10 and 11 show another example of the conventional drain.
In the figure, 29 is a hollow cylindrical outer cylinder vertically inserted into the upper end of the drain hole 22, 30 is a hollow cylindrical intermediate cylinder fitted concentrically into the outer cylinder 29, and 31 is formed at the upper end. A hollow cylindrical inner cylinder screwed concentrically into the intermediate cylinder 30 so that the lower surface of the formed flange 31a contacts the upper surface of the flange 30a formed at the upper end of the intermediate cylinder 30, and 32 is a floor surface of a roof or a veranda. A drain cap integrally provided with the inner cylinder 31 above the inner cylinder 31 so as to protrude upward, and a flange 29 a formed on the floor surface 25 and the upper end of the outer cylinder 29.
A waterproof sheet 27 for covering the floor surface 25 is interposed between the flange 29a at the upper end of the outer cylinder 29 and the flange 30a at the upper end of the intermediate cylinder 30.

The drain cap 32 is, like the drain cap 24 described above, disposed at predetermined intervals in the circumferential direction of the inner cylinder 31 and has a plurality of support members whose lower ends are integrally connected to the upper end of the inner cylinder 31. It has a leg 32a and a drain cap main body 32b integrally connected to the upper end of the support leg 32a, and the drain cap main body 32b has a plurality of rainwater introduction holes 32c, 3c.
2d is provided.

Also in this embodiment, the rainwater 28 is guided into the gap between the rainwater introduction holes 32c and 32d of the drain cap main body 32b and the support legs 32a and flows into the inner cylinder 31 of the drain. 30, it flows down through the outer cylinder 29.

[0010] In addition, dust and fallen leaves are drain cap 3
2 and is prevented from flowing into the inner cylinder 31.

[0011]

Since each of the above-mentioned conventional drains is generally made of synthetic resin and has a low strength, and the drain caps 24 and 32 protrude above the floor surface 25.
If a person trips on the drain caps 24, 32, or foreign matter hits the drain caps 24, 32, the drain caps 24, 32 may break at the support legs 24a, 32a.

In this case, the inner cylinders 23, 31 are removed from the outer cylinder 21 or the intermediate cylinder 30, and the new inner cylinders 23, 31 with the drain caps 24, 32 are replaced with the outer cylinder 21 or the intermediate cylinder 30. It is necessary to screw.

However, among the conventional drains described above, in the case of the drain shown in FIGS. 8 and 9, since the lower surface of the flange 23a of the inner cylinder 23 and the upper surface of the waterproof sheet 27 are bonded by an adhesive, It is difficult to remove 23 from outer cylinder 21.

In the case of the drain shown in FIGS.
The lower surface of the first flange 31a and the flange 30a of the intermediate cylinder 30
Between the inner cylinder 3 and the inner cylinder 3
1 should be able to be easily removed from the intermediate cylinder 30, but in practice, the adhesive may enter between the flanges 31a and 30a during construction. In this case, the flanges 31a and 30a The inner cylinder 31
Is difficult to remove from the intermediate cylinder 30.

For this reason, in the conventional drain, it is difficult to replace the inner cylinders 23, 31 with new inner cylinders 23, 31 having the drain caps 24, 32 when the drain caps 24, 32 are broken. There is a possibility that foreign matter such as fallen leaves and dust may enter the inside 22 and block the drain hole 22.

Furthermore, although each of the above-mentioned drains is made of iron, it corrodes due to long-term use, and the drain cap 2
In the case where 4, 32 is broken, there is a problem similar to the above-described drain.

The present invention has been made in view of the above situation, and
An object of the present invention is to provide a drain cap which can be easily set to the inner cylinders 23, 31 without removing the inner cylinders 23, 31 when the drain caps 24, 32 integrally formed with the inner casing 1 are broken. What was done.

[0018]

According to the present invention, a plurality of rainwater introduction holes are provided in a convex drain cap body whose center side protrudes upward, and a drain hole side in which the drain cap body is mounted is provided in the drain cap body. The lower end of the support leg extending toward the lower side of the outer peripheral edge of the drain cap body.
The support leg is provided at substantially the same height position as the end, and the lower end of the support leg is provided.
A plurality of straight tip side is adapted to be brought into contact with the inner peripheral surface of the drain hole by the elastic force bends toward the longitudinal direction of the drain hole
Are attached so as to be substantially crossed in a plan view .

According to the present invention, a plurality of notches whose floor surfaces are open at predetermined intervals in the circumferential direction can be provided in the outer peripheral edge portion of the drain cap main body, and the elongated member of the support leg is attached to the elongated portion of the support leg. Detent means may be provided.

In the present invention, the drain cap can be attached to the upper end of the drain hole only by bending the elongated member and inserting it into the drain hole, so that easy and quick attachment is possible.

[0021] Rainwater is introduced from the rainwater inlet into the drain.

When a plurality of notches whose floor surfaces are open at predetermined intervals in the circumferential direction are provided on the outer peripheral edge of the drain cap main body, rainwater can be introduced into the drain holes from the notches. .

In the case where a means for stopping the elongate member is provided at the attachment portion of the elongate member of the support leg, the elastic member does not rotate in the circumferential direction of the drain cap main body, so that the drain cap main body is surely secured to the drain hole. Is supported and fixed.

[0024]

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

1 to 5 show an embodiment of a drain cap 1 according to the present invention. In the drawings, reference numeral 2 denotes a drain cap main body formed in a dome shape by aluminum die casting.

The spherical surface of the drain cap body 2 has a large number of rainwater introduction holes 3 extending radially when viewed in plan.
4 is formed, and a notch 5 whose lower side is opened is provided at a required interval in the circumferential direction at an outer edge of a lower end of the drain cap main body 2, and inside a radial center of the drain cap main body 2, A column-shaped support leg 6 extending downward so that the lower end is located at substantially the same position as the lower end of the outer peripheral edge of the drain cap main body 2 is provided integrally with the drain cap main body 2.

Four projections 7 protrude downward from the outer peripheral edge of the lower end of the support leg 6 in the circumferential direction. Thus, between the projections 7, two elongated members 8 a made of stainless steel having a high elasticity and crossing in a cross shape in a plan view.
8b are disposed so as to be overlapped at the cross portion, and the elongated members 8a and 8b are provided with female screws 9 screwed to the lower ends of the support legs 6.
The screw 10 is fixed to the lower end of the support leg 6 by screwing the screw 10 through the elongated members 8a and 8b. The width W of the elongated members 8a, 8b is slightly smaller than the inner width between the left and right projections 7, 7, and the thickness H of the two elongated members 8a, 8b is formed substantially equal to the height of the projection 7. Thus, the protrusion 7
The elongated members 8a and 8b can be prevented from rotating in the circumferential direction of the drain cap body 2.

In FIG. 5, reference numeral 11 denotes a drain hole provided with a vinyl chloride 13 formed so as to penetrate the floor 12 downward.

Next, the drain cap 1 is connected to the drain hole 1.
The procedure for installation at 1 will be described with reference to FIGS.

As shown in FIG. 6, the operator holds the drain cap 1 and bends the elongated members 8a and 8b by approximately 90 degrees from the initial state, so that the end portion between the elongated members 8a and 8b. Is narrower than the diameter of the drain hole 11, the elongated members 8a and 8b are inserted into the drain hole 11, and the upper surface of the drain hole 11 is covered with the drain cap main body 2 as shown in FIGS.

When the worker releases his / her hands from the elongated members 8a and 8b, the elongated members 8a and 8b are spread by elastic force and come into contact with the inner peripheral wall of the drain hole 11 as shown in FIG. The drain cap main body 2 set in the drain hole 11 is fixedly held above the drain hole 11 by the elastic force of the elongated members 8a and 8b.

In addition, even if the existing drain cap formed integrally with the inner cylinder is broken, the drain cap 1 can be easily and quickly set in the drain hole 11 without removing the inner cylinder.

The rainwater flows into the drain cap body 2 through the rainwater introduction holes 3 and 4 and the notch 5 and flows down in the drain hole 11.

Further, foreign matters such as fallen leaves and debris stop outside the drain cap body 2 and do not flow into the drain hole 11.

Further, since the drain cap body 2 is formed not three-dimensionally but three-dimensionally, the rainwater introduction holes 3 and 4 and the notch 5 are only partially blocked by fallen leaves, which hinders drainage. Never.

In the embodiment of the present invention, the case where the drain cap body is formed in a dome shape has been described. However, if the drain cap body has a three-dimensional shape such as a columnar shape or a conical shape, which projects upward from the upper end of the drain hole. It can be implemented in any shape, and the drain cap in the embodiment of the present invention can be applied to a case where one kind of pipe has an inner diameter of 30 mm to 100 mm. It goes without saying that various changes can be made in the above.

[0037]

According to the drain cap of the present invention, in the case of the first aspect, the drain cap can be easily attached to the drain hole.
Even when the existing drain cap integrally formed with the inner cylinder is broken, the drain cap can be easily and quickly set in the drain hole without removing the inner cylinder,
In the case of the second aspect, drainage can be performed more favorably, and in the case of the third aspect, various excellent effects such as that the drain cap body is securely held in the drain hole can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view of an example of an embodiment of a drain cap of the present invention.

FIG. 2 is a view taken in the direction of arrows II-II in FIG.

FIG. 3 is an enlarged view in the III-III direction of FIG. 2;

FIG. 4 is an enlarged sectional view of the vicinity of a lower end of a support leg shown in FIG. 2;

FIG. 5 is a longitudinal sectional view showing a state in which the drain cap of the present invention is set in a drain hole.

FIG. 6 is a perspective view showing an operation state when the drain cap of the present invention is set in a drain hole.

FIG. 7 is a perspective view showing a state in which the drain cap of the present invention is set in a drain hole.

FIG. 8 is a longitudinal sectional view showing an example of a conventional drain.

FIG. 9 is a plan view of FIG.

FIG. 10 is a longitudinal sectional view showing another example of the conventional drain.

FIG. 11 is a plan view of FIG. 10;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drain cap 2 Drain cap main body 3, 4 Rainwater introduction hole 5 Notch 6 Support leg 7 Projection (rotation stopping means) 8a, 8b Slender member 11 Drain hole 12 Floor

Claims (3)

(57) [Claims] A plurality of rainwater introduction holes are provided in a convex drain cap body whose center side protrudes upward, and a support leg extending toward a drain hole side to which the drain cap body is attached is provided in the drain cap body . The lower end is
At approximately the same height as the lower edge of the outer periphery of the cap body
At the lower end of the support leg, a plurality of linear elongate members whose front end side is bent in the longitudinal direction of the drainage hole so as to be able to abut against the inner peripheral surface of the drainage hole by elastic force are substantially viewed in a plan view. K
Drain cap, characterized in that attached to loss. 2. The drain cap according to claim 1, wherein a plurality of notches whose floor surfaces are opened at predetermined intervals in a circumferential direction are provided in an outer peripheral edge of the drain cap main body. 3. The drain cap according to claim 1, wherein a means for stopping the elongate member is provided at the mounting portion of the elongate member of the support leg.