JP7373344B2 - Drainage cover and drainage structure - Google Patents

Description

The present invention relates to a drainage cover and drainage structure for a washing area floor.

Hair catchers are placed at the drains on the floor of the bathroom washing area to prevent the drains from becoming clogged with hair and debris. The upper part of the hair catcher is covered with a drainage cover so that the hair catcher is not exposed.

For example, Patent Document 1 discloses a drainage structure in which a hair catcher is arranged in a recess provided in a washing area floor and a drainage cover is provided to cover the hair catcher. The recess is a square-shaped part having a substantially rectangular shape in plan view, and an opening for connecting a drain trap is provided at the bottom of the recess. At the four corners of the recess, drain cover mounting portions each having an upwardly facing stepped portion are provided. A drain cover made of a substantially rectangular plate is mounted so that its four corners are placed on the drain cover mounting portion.

Japanese Patent Application Publication No. 2011-226197

In the drainage structure described in Patent Document 1, the side surfaces at the four corners of the drainage cover face the inner surfaces at the four corners of the recess, and a narrow space is created between the two surfaces, making it easy for water to accumulate. When water containing hair flows into such a narrow space, the hair becomes stagnant and adheres to the narrow space. Water also flows into the gap at the contact area between the drain cover placement part and the drain cover, and hair adheres around the contact area.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a drainage cover and a drainage structure that can suppress the adhesion of hair around the legs.

A drainage cover according to an aspect of the present invention includes a lid portion that has a drain port at the bottom and covers a recess formed in a washing area floor, and a step portion that is lowered from the floor surface of the washing area floor at an inner side of the recess. The lid part is supported by contacting a mounting part made of the recess, and is arranged along the inner surface of the recess, and the distance from the inner surface at one end is the distance from the inner surface at the other end. It has legs larger than the.

FIG. 1 is a perspective view showing the appearance of a washing area floor including a drainage structure according to an embodiment. It is a sectional view of a drainage structure part. It is a perspective view showing the appearance of a recess. FIG. 3 is a perspective view of the drain cover seen from below. It is a bottom view of a drainage cover. FIG. 3 is an enlarged bottom view of a portion of the drain cover. 6 is a cross-sectional view of the drain cover taken along line AA shown in FIG. 5. FIG. It is a schematic diagram for demonstrating the flow of water in the leg part of a drainage cover. 9 is a sectional view of the drain cover taken along line BB shown in FIG. 8. FIG. It is a bottom view of the drainage cover concerning a modification. It is a bottom view which expanded a part of drainage cover based on another modification.

Hereinafter, the present invention will be explained based on a preferred embodiment with reference to FIGS. 1 to 11. Identical or equivalent components and members shown in each drawing are designated by the same reference numerals, and redundant explanations will be omitted as appropriate. The dimensions of members in each drawing are shown enlarged or reduced as appropriate to facilitate understanding. In each drawing, some members that are not important for explaining the embodiments are omitted.

(Embodiment)
Please refer to FIGS. 1 and 2. The washing area floor 8 has a rectangular shape in plan view, and the drainage structure 1 is arranged in the center of the side part 8a on the bathtub side. The washing area floor 8 has a slope that descends from the side part 8b opposite to the side part 8a toward the side part 8a, and from the side part 8c crossing the side part 8a to the center part of the side part 8a. It has a slope that decreases as it goes towards. The water falling on the washing area floor 8 flows toward the drainage structure 1 provided at the center of the side part 8a.

The drainage structure 1 includes a recess 10, a drainage cover 20, etc., and a drainage port 11 penetrating vertically is provided at the bottom of the recess 10. A drain section 6 is provided below the drain port 11. A cylindrical connection flange 61 is attached to the drain port 11, and a hair catcher 5 is attached to the connection flange 61.

A trap portion 62 is provided below the connection flange 61. Water from the washing area floor 8 flows into the trap section 62 and is discharged from the outlet 64. A bathtub-side connection portion 63 connected to the drain port of the bathtub is connected to the trap portion 62 via piping, and water from the bathtub also flows into the trap portion 62 and is discharged from the discharge port 64.

See FIG. 3. The recess 10 has a substantially rectangular square shape when viewed from above. The recess 10 has a circular drainage port 11 at the bottom. On the inside of the recess 10 and on the outside of the drain port 11, a mounting part 12 is formed which is a stepped part that is one step lower than the floor surface of the washing area floor 8. A drainage cover 20 is placed on the placing portion 12.

The mounting portions 12 are located inside the recess 10 which is rectangular in plan view and outside the circular drainage port 11 area, and are therefore formed at least at the four corners of the recess 10 . In a plan view, if the diameter of the drain port 11 is smaller than the length of the side of the recess 10, the mounting portion 12 can also be formed on the side of the recess 10.

Refer to FIGS. 4 and 5. The drain cover 20 has a rectangular plate-shaped lid part 21 and leg parts 22. In a plan view, the outer dimensions of the lid part 21 are smaller than the recess 10, and the lid part 21 is accommodated in the recess 10, so that the upper surface of the lid part 21 can be flush with the floor surface of the washing area floor 8. The leg portions 22 have a columnar shape and are provided at the four corners of the lid portion 21.

A plurality of leg portions 22 are provided apart from each other in the circumferential direction when viewed from the center of the drain port 11, that is, the center of the lid portion 21 in plan view. The leg portion 22 is provided so as to extend in a direction intersecting an outward direction from the central portion of the drain port 11, that is, the central portion of the lid portion 21, in a plan view. It is provided so as to extend in a direction intersecting the outward direction. The leg portion 22 shown in FIGS. 4 and 5 is formed in an arcuate shape that is convex toward the outside when viewed from the bottom. One end 22a of the leg 22 is in a position retracted inward from the outer surface of the lid 21. In comparison, the other end 22b of the leg 22 is located closer to the outer surface of the lid 21.

When the drain cover 20 is placed in the recess 10, the gap between the one end 22a of the leg 22 and the inner surface of the recess 10 is the gap between the other end 22b of the leg 22 and the inner surface of the recess 10. It will be wider than the gap between it and the sides. This also applies to the four corners of the drain cover 20.

See FIG. 6. The leg portion 22 is formed as a whole on the inside of the outer surface 210 of the lid portion 21, that is, on the center side of the lid portion 21 in a plan view (also referred to as “inside of the lid portion 21”). Let us look at the outer surface 23 of the leg 22 facing the inner surface of the recess 10. At one end 22a of the leg portion 22, an outer surface 23a facing the inner surface 10a of the recess 10 is spaced away from the outer surface 21a of the lid 21 and the inner surface 10a of the recess 10 toward the inside of the lid 21. It is being

On the other hand, at the other end 22b of the leg portion 22, the other end side outer surface 23b facing the inner surface 10b of the recess 10 is substantially flush with the outer surface 21b of the lid 21, and the inner surface 10b of the recess 10 The outer surface 21b of the cover 21 is spaced apart from the outer surface 21b of the cover 21 by a gap between the outer surface 21b and the outer surface 21b of the cover 21. Note that the outer surface 21a and the outer surface 21b of the lid portion 21 are two outer surfaces that intersect at a corner. The inner surface 10a and the inner surface 10b of the recess 10 are two inner surfaces that meet at a corner.

The other end side outer surface 23b may be provided away from the outer surface 21b of the lid 21 toward the inside of the lid 21. However, the distance between the outer side surface 23a on one end side and the inner side surface 10a of the recess 10 is set to be larger than the distance between the outer side surface 23b on the other end side and the inner side surface 10b of the recess 10.

As described above, the leg portion 22 is formed in an arcuate shape that is convex toward the outside when viewed from the bottom surface. The outer surface 23 of the leg 22 moves away from the outer surface 21b of the lid 21 toward the inside of the lid 21 and approaches the outer surface 21a of the lid 21 as it goes from the other end outer surface 23b to the middle outer surface 23c. do. Conversely, the outer surface 23 of the leg 22 moves away from the outer surface 21a of the lid 21 toward the inside of the lid 21 as it goes from the one end outer surface 23a to the middle outer surface 23c. Approach the side surface 21b.

The distance between the outer surface 23 of the leg 22 and the inner surface 110 of the recess 10 is small at one end 22a and the other end 22b of the leg 22, and is large at a midway portion 22c of the leg 22. A flow path 30 is formed between the outer surface 23 of the leg 22 and the inner surface 110 of the recess 10.

Looking at the two adjacent leg parts 22, one end part 22a of one leg part 22 is provided so as to face the other end part 22b of the other leg part 22. When two adjacent legs 22 are arbitrarily extracted from among the four legs 22 provided at the four corners of the lid 21, in any case, one end 22a of one leg 22 is connected to the other leg. 22 (see FIG. 5).

See FIG. 7. Since the bottom of the leg portion 22 is in contact with the mounting portion 12, the bottom portion of the flow path 30 is in a closed state. Water flows into the flow path 30 from the gap between the inner surface 110 of the recess 10 and the outer surface 210 of the lid 21, and then drains from the one end 22a and the other end 22b of the leg 22. functions.

Next, the operation of the drainage structure 1 will be explained. Refer to FIG. FIG. 8 corresponds to a side view of the drain cover 20 placed in the recess 10. The water from the washing area floor 8 flows from the gap between the outer surface 210 of the lid part 21 of the drain cover 20 and the inner surface 110 of the recess 10 at the four corners of the recess 10, as indicated by the arrow P shown in FIG. It flows down between the outer surface 23 of the leg 22 and the inner surface 110 of the recess 10.

The water that has flowed down into the passage 30 between the outer surface 23 of the leg 22 and the inner surface 110 of the recess 10 is temporarily stored in the passage 30 and flows through the one end 22a of the leg 22 and other parts. It flows out to the drain port 11 from the gap at the end 22b.

The flow of water in the passage 30 is in a lateral direction toward one end 22a where the distance between the outer surface 23 of the leg 22 and the inner surface 110 of the recess 10 is large, as indicated by the arrow Q shown in FIG. The flow is as follows. However, since there is a gap between the outer surface 23 of the leg 22 and the inner surface 110 of the recess 10 at the other end 22b of the leg 22, some of the water that has flowed into the flow path 30 is The water also flows out to the drain port 11 from the gap in the portion 22b.

When there is little water flowing into the flow passage 30, the water that has flowed in immediately flows out from the one end 22a side of the leg portion 22, so that the water stored in the flow passage 30 becomes shallow. When the amount of water flowing into the passageway 30 increases, the amount of water flowing out from the one end 22a side of the leg portion 22 is limited, so the water stored in the passageway 30 becomes deeper.

Since the leg portion 22 is formed inside the outer surface 210 of the lid portion 21, a flow path 30 is provided between the outer surface 23 of the leg portion 22 and the inner surface 110 of the recess 10. Since the hair is carried by the flow of water in the flow path 30, it is possible to suppress the hair contained in the water from adhering around the leg portions 22. The leg portion 22 of the flow path 30 is formed inside the outer surface 210 of the lid portion 21, so that the bottom surface has a certain width, so that water stagnates in the narrow portion and becomes dry. The adhesion of substances is suppressed.

See FIG. 9. The leg portions 22 extend in the M direction that intersects with the direction outward from the center of the drain port 11 provided in the recess 10, thereby allowing flow to flow between the inner surfaces 110 of the opposing recesses 10. This makes it easier to provide the passage 30. By being provided at the four corners of the recess 10, the flow path 30 has a generally triangular shape surrounded by two sides defined by the inner surface 110 of the recess 10 and one side defined by the outer surface 23 of the leg portion 22 in plan view. Can be formed as a region.

The leg portions 22 are formed in an arc shape that is convex toward the outside in a cross section that intersects with the height direction, so that the direction of water flowing toward the leg portions 22 is lateral as shown by arrow R. It is possible to prevent the flowing water from staying in the flow path 30. This can prevent water flowing into the flow path 30 from staying on the flow path 30 side of the leg portion 22 and causing hair to adhere thereto.

As shown in FIG. 9, the gap between one end 22a of the leg 22 and the inner surface 110 of the recess 10 is the same as the gap between the other end 22b of the leg 22 and the inner surface 110 of the recess 10. It is wider than. Therefore, the water that has flowed into the flow passage 30 easily flows toward the end portion 22a, and a decrease in flow velocity can be suppressed.

In the two adjacent leg sections 22, one end 22a of one leg 22 is provided so as to face the other end 22b of the other leg 22, so that water can be drained as shown by arrow S in FIG. Water flows out from the legs 22 in the same circumferential direction when viewed from the center of the mouth 11. Thereby, the drainage structure 1 can generate a swirling flow at the drainage port 11.

(Modified example)
See FIG. 10. In the drainage cover 20 according to the modification shown in FIG. 10, in two adjacent leg sections 22, one end 22a of one leg 22 is provided so as to face one end 22a of the other leg 22. . Similar to the embodiment described above, the distance between one end 22a of the leg 22 and the outer surface 210 of the lid 21 is larger than the distance between the other end 22b and the outer surface 210.

Between the one end portions 22a of the adjacent leg portions 22, water flows out from both the leg portions 22 as indicated by the arrow S shown in FIG. Thereby, in the drainage structure 1, the flow rate of water increases between the one end portions 22a of the adjacent leg portions 22, and the adhesion of hair and dirt can be suppressed. Furthermore, the water flowing into the hair catcher 5 can form a swirling flow in the hair catcher 5 that swirls around a horizontal axis.

Refer to FIG. 11. In the drainage cover 20 according to the modification shown in FIG. 11, legs 22 are provided on the side portions of the outer surface 210 of the lid portion 21. As shown in FIG. The distance between one end 22a of the leg 22 and the outer surface 210 of the lid 21 is larger than the distance between the other end 22b and the outer surface 210.

Even when the legs 22 are provided on the side portions of the lid 21, similar to the case where the legs 22 are provided at the four corners of the lid 21, there is a space between the legs 22 and the inner surface 110 of the recess 10. A flow path 30 is formed. In this case as well, a drainage structure may be provided in which water flowing into the flow passage 30 is discharged from one end 22a of the leg 22, as indicated by the arrow S shown in FIG.

The above description has been based on the embodiments of the present invention. Those skilled in the art will understand that these embodiments are illustrative and that various modifications and changes are possible and within the scope of the claims of the present invention. It is about to be done. Accordingly, the description and drawings herein are to be regarded in an illustrative rather than a restrictive sense.

1 drainage structure, 10 recess, 11 drainage port, 12 mounting part,
20 drainage cover, 21 lid, 22 leg, 23 outer surface,
8 Washing area floor.

Claims (4)

a lid portion having a drain port at the bottom and covering a recess formed in the washing area floor;
The lid part is supported by contacting a mounting part formed by a stepped part lowered from the floor surface of the washing area floor in the inner part of the recess, and is disposed along the inner surface of the recess, and one end part a leg portion having a distance from the inner surface at the other end portion that is larger than a distance from the inner surface at the other end portion ;
A plurality of the leg portions are provided spaced apart in the circumferential direction when viewed from the center portion of the drain port,
A drainage cover in which the one end of one of the two adjacent leg portions and the other end of the other leg portion are opposed to each other . a lid portion having a drain port at the bottom and covering a recess formed in the washing area floor;
The lid part is supported by contacting a mounting part formed by a stepped part lowered from the floor surface of the washing area floor in the inner part of the recess, and is disposed along the inner surface of the recess, and one end part a leg portion having a distance from the inner surface at the other end portion that is larger than a distance from the inner surface at the other end portion;
A plurality of the leg portions are provided spaced apart in the circumferential direction when viewed from the center portion of the drain port,
A drainage cover in which the one end of one of the two adjacent leg portions and the one end of the other leg are opposed to each other. a lid portion having a drain port at the bottom and covering a recess formed in the washing area floor;
The lid part is supported by contacting a mounting part formed by a stepped part lowered from the floor surface of the washing area floor in the inner part of the recess, and is disposed along the inner surface of the recess, and one end part a leg portion having a distance from the inner surface at the other end portion that is larger than a distance from the inner surface at the other end portion;
The recess is approximately rectangular in plan view,
The leg portions are provided at each of the four corners of the recess, and are formed in an arcuate shape that is convex toward the outside in a cross section that intersects with the height direction. A drainage cover according to any one of claims 1 to 3 ;
the recess;
The aforementioned mounting section;
Drainage structure with.

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