JP7336742B2 - Plumbing parts and bathroom parts - Google Patents

Description

The present invention relates to a plumbing member and a bathroom member.

2. Description of the Related Art In recent years, plumbing members and bathroom members having high drainage performance have been widely used. For example, such plumbing members and bathroom members are used in bathroom floors.

The bathroom floor disclosed in Patent Document 1 is a bathroom floor that is divided into a plurality of areas by grooves, and the areas are decorative surfaces with unevenness. In such a bathroom floor, the unevenness and grooves of the decorative surface contribute to the drainage of water sprayed on the bathroom floor, and thus the drainage performance is said to be high.

JP 2017-166277 A

On the other hand, in the above-described conventional bathroom floor, the intersections of the grooves are crossroads (cross-shaped) or T-shaped roads (T-shaped). Therefore, when draining water, the water is interrupted at the intersection, the drain stops, and water remains in the groove. Therefore, the above conventional bathroom floor has room for improvement in drainage performance.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a plumbing member and a bathroom member having excellent drainage performance.

In order to achieve the above object, a plumbing member according to an aspect of the present invention includes joints configured by a plurality of grooves and a plurality of planar portions separated by the joints, the plurality of grooves having a predetermined a plurality of first grooves extending in a direction, and a plurality of second grooves extending in a direction different from the plurality of first grooves, wherein the plurality of first grooves, the plurality of second grooves, and the plurality of planar grooves A portion forms a three-way junction in a connection region where the plurality of first grooves and the plurality of second trenches are connected, and each groove constituting the three-way junction connects to a connection center point in the connection region. When the direction is defined as the groove connection direction, the angle formed by each of the groove connection directions is greater than 90° and less than 180°.

Moreover, the bathroom member which concerns on 1 aspect of this invention is equipped with the said plumbing member.

ADVANTAGE OF THE INVENTION According to this invention, the plumbing member and bathroom member which have the outstanding drainage performance can be provided.

FIG. 1 is a top view of a plumbing member according to Embodiment 1. FIG. FIG. 2 is an enlarged top view showing the plumbing member in region II of FIG. 3 is a cross-sectional view of the plumbing member along line III-III of FIG. 1. FIG. FIG. 4 is a cross-sectional view showing an enlarged part of the fine grooves provided on the surface of the plumbing member according to Embodiment 1. FIG. FIG. 5 is a cross-sectional view showing an enlarged region V in FIG. FIG. 6 is a top view for explaining the behavior of the water-related member of the comparative example during drainage. FIG. 7 is a top view for explaining the behavior of the water-related member according to Embodiment 1 during drainage. 8 is a top view of a plumbing member according to Modification 1 of Embodiment 1. FIG. 9 is a top view of a plumbing member according to Modification 2 of Embodiment 1. FIG. 10 is a top view of a plumbing member according to Embodiment 2. FIG. FIG. 11 is a top view of the plumbing member for explaining another example of determining the groove connection direction.

Below, plumbing members and bathroom members according to embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that each of the embodiments described below is a specific example of the present invention. Therefore, the numerical values, shapes, materials, components, arrangement and connection of components, steps, order of steps, etc. shown in the following embodiments are examples and are not intended to limit the present invention. Therefore, among the constituent elements in the following embodiments, constituent elements not described in independent claims will be described as optional constituent elements.

Each figure is a schematic diagram and is not necessarily strictly illustrated. Therefore, for example, scales and the like do not necessarily match in each drawing. Moreover, in each figure, the same code|symbol is attached|subjected about the substantially same structure, and the overlapping description is abbreviate|omitted or simplified.

Also, in this specification, terms that indicate the relationship between elements such as parallel or orthogonal, terms that indicate the shape of elements such as squares or rectangles, and numerical ranges are not expressions that express only strict meanings, but substantial It is an expression that means that a difference of approximately several percent is also included, for example, a range equivalent to each other.

In addition, in this specification and drawings, x-axis, y-axis and z-axis indicate three axes of a three-dimensional orthogonal coordinate system. In each embodiment, the two axes parallel to the surface of the plumbing member are the x-axis and the y-axis, and the direction perpendicular to the surface is the z-axis direction. The positive direction of the x-axis is the drainage direction in the second floor member of the plumbing member. The surface of the plumbing member is inclined with respect to the horizontal plane in order to improve drainage performance. The positive direction of the y-axis is the drainage direction in the first floor member of the plumbing member.

(Embodiment 1)
[composition]
First, the configuration of a plumbing member 1 according to the present embodiment will be described with reference to FIG.

FIG. 1 is a top view of a plumbing member 1 according to this embodiment. More specifically, (a) of FIG. 1 is a top view of the entire plumbing member 1, and (b) of FIG. 1 is a rectangular area surrounded by dotted lines shown in (a) of FIG. 1 is an enlarged top view of FIG. In addition, in FIG. 1(a), by further enlarging a part of the surface of the plumbing member 1, it is provided on the surface of the plumbing member 1 within the circular range surrounded by the circle of the dashed-dotted line. A portion of the fine groove 30 is schematically illustrated. The solid lines illustrated within the circular range represent the plurality of groove-shaped concave portions 31 of the fine groove 30 . First, with reference to FIG. 1(a), the outline of a plumbing member 1 according to the present embodiment will be described.

The plumbing member 1 is, for example, a flooring material used for the floor of a bathroom. The plumbing member 1 can quickly drain water toward the drain port 2. - 特許庁

In addition, the plumbing member 1 may be provided not only on the floor of the bathroom but also on the bottom of the bathtub arranged in the bathroom. Further, for example, the plumbing member 1 may be used in the bottom of a washbasin or kitchen sink, a drain port, the floor of a damp room or passageway, or the inside of a washing machine.

The water-related member 1 according to the present embodiment includes a joint 10 configured by a plurality of grooves, a plurality of planar portions 20 separated by the joint 10, a fine groove 30, a film member 40, and a floor member 60. , and a drain port 2 . The floor member 60 has joints 10 and a plurality of planar portions 20 . The film member 40 is provided on the surface of the joint 10 and the plurality of planar portions 20 , that is, the surface of the floor member 60 . Also, the fine grooves 30 are provided on the surface of the film member 40 . However, the film member 40 is not shown in FIG. 1 to avoid complicating the drawing. Also, the film member 40 will be described later with reference to FIG.

The joint 10 is a joint composed of a plurality of grooves. The multiple grooves include multiple first grooves 11 extending in a predetermined direction and multiple second grooves 12 extending in a direction different from the multiple first grooves 11 . The plurality of first grooves 11 may linearly extend in a predetermined direction, and the plurality of second grooves 12 may linearly extend in a direction different from that of the first grooves 11 . Further, the joint 10 has a drainage function to drain the water sprayed on the plumbing member 1 toward the drainage port 2 . That is, the plurality of grooves forming the joint 10 are drainage grooves.

The plurality of first grooves 11 are parallel to each other and arranged at regular intervals. Specifically, the plurality of first grooves 11 each extend in the x-axis direction and are arranged side by side along the y-axis direction.

The plurality of second grooves 12 are parallel to each other and arranged at regular intervals. Specifically, each of the plurality of second grooves 12 extends in the y-axis direction and is provided side by side along the x-axis direction. That is, the plurality of first grooves 11 and the plurality of second grooves 12 are orthogonal to each other.

For example, the spacing between the plurality of first grooves 11 and the spacing between the plurality of second grooves 12 are different. Also, the spacing between the plurality of first grooves 11 and the spacing between the plurality of second grooves 12 may be the same, for example.

Further, the groove widths of the plurality of first grooves 11 and the plurality of second grooves 12 may be the same or different. The width of the plurality of first grooves 11 is the length of the plurality of first grooves 11 in the lateral direction (that is, the y-axis direction). The width of the plurality of second grooves 12 is the length of the plurality of second grooves 12 in the lateral direction (that is, the x-axis direction). In the present embodiment, the groove widths of the plurality of first grooves 11 and the plurality of second grooves 12 are the same, and the groove widths of the plurality of first grooves 11 and the plurality of second grooves 12 are Defined as W.

The plurality of first grooves 11 and the plurality of second grooves 12 have a concave groove structure. and groove sides to be connected. The bottom surface of the groove is a surface parallel to the tilt direction of the floor member 60, and the side surface of the groove is a wall surface extending in the z-axis direction.

A plurality of planar portions 20 are separated by joints 10 . A portion surrounded by two adjacent first grooves 11 and two adjacent second grooves 12 is a planar portion 20 . The plurality of planar portions 20 are flat surfaces on the surface of the floor member 60 . Note that the plurality of planar portions 20 may not be perfectly flat surfaces, and may be gently curved surfaces.

The plurality of first grooves 11, the plurality of second grooves 12, and the plurality of planar portions 20 form a three-forked path in the connection region 50 where the plurality of first grooves 11 and the plurality of second grooves 12 are connected. The trifurcation has respective grooves that make up the trifurcation. In other words, a three-forked road is a region formed by three grooves, and a three-way forked road is a region where three grooves converge and intersect. The detailed structure of the plurality of first grooves 11, the plurality of second grooves 12, the plurality of planar portions 20, the connection region 50, and the three-forked road will be described later with reference to FIG. 1(b) and FIG. .

The fine grooves 30 are grooves arranged in stripes on the surfaces of the joint 10 and the plurality of planar portions 20 . That is, the fine grooves 30 are provided throughout the plumbing member 1 over the plurality of planar portions 20 and the joints 10 between the plurality of planar portions 20 . The fine groove 30 has a plurality of groove-shaped recesses 31 with at least one of width and depth on the order of micrometers. Detailed structures of the fine grooves 30 and the plurality of recesses 31 will be described later with reference to FIGS. 4 and 5. FIG.

The floor member 60 corresponds to the base material of the plumbing member 1 . The floor member 60 is made of, for example, thermoplastic resin or thermosetting resin. Specifically, the floor member 60 is made of fiber reinforced plastics (FRP) or SMC (Sheet Molding Compound) material containing glass fibers. Alternatively, the floor member 60 may be made of artificial marble containing acrylic or polyester as a main component. The floor member 60 is formed by press molding using SMC material, for example.

The floor member 60 is formed so as to be lowered toward the drain port 2 . The floor member 60 has a first floor member 61 , a second floor member 62 and a third floor member 63 . Each of the first floor member 61, the second floor member 62 and the third floor member 63 has a different inclination direction. Specifically, each of the first floor member 61 , the second floor member 62 and the third floor member 63 is inclined toward the drain port 2 . That is, the inclination direction of each of the first floor member 61, the second floor member 62 and the third floor member 63 corresponds to the water drainage direction of each of the first floor member 61, the second floor member 62 and the third floor member 63. corresponds to

The first floor member 61 is inclined along the inclination direction D1. The tilt direction D1 is the positive direction of the y-axis. The first floor member 61 is positioned lower on the positive side of the y-axis and positioned higher on the negative side of the y-axis. The first floor member 61 is not inclined along the x-axis direction.

The second floor member 62 is inclined along the inclination direction D2. The tilt direction D2 is the positive direction of the x-axis. The second floor member 62 is positioned lower on the positive side of the x-axis and positioned higher on the negative side of the x-axis. The second floor member 62 is not inclined along the y-axis direction.

The third floor member 63 is inclined along the inclination direction D3. The tilt direction D3 is the negative direction of the y-axis. The third floor member 63 is positioned lower on the negative side of the y-axis and positioned higher on the positive side of the y-axis. The third floor member 63 is not inclined along the x-axis direction.

The inclination angle of each of the first floor member 61, the second floor member 62 and the third floor member 63 is 1.2° or less, for example 1.1°. Thereby, even if a person stands on the first floor member 61, the second floor member 62, or the third floor member 63, it is possible to reduce the uncomfortable feeling caused by the slanting floor.

The first floor member 61 and the second floor member 62 are connected by a boundary line L1. In the present embodiment, the boundary line L1 obliquely intersects the tilt direction D1 and the tilt direction D2. The crossing angle of the boundary line L1 with respect to each of the tilt direction D1 and the tilt direction D2 is, for example, 45°, but is not limited to this. The crossing angle may be 30° or 60°.

The second floor member 62 and the third floor member 63 are connected by a boundary line L2. In the present embodiment, the boundary line L2 obliquely intersects both the tilt direction D2 and the tilt direction D3. The crossing angle of the boundary line L2 with respect to each of the tilt direction D2 and the tilt direction D3 is, for example, 45°, but is not limited to this. The crossing angle may be 30° or 60°.

The drain port 2 is recessed from the floor member 60 . The water sprinkled on the floor member 60 flows into the drain port 2 according to gravity.

Next, the detailed structure of the plurality of first grooves 11, the plurality of second grooves 12, and the plurality of planar portions 20 will be described with reference to FIG. 1(b).

First, the arrangement of the plurality of first grooves 11 and the plurality of second grooves 12 will be described.

Two first grooves 11 adjacent to each other in the extending direction (x-axis direction) of the plurality of first grooves 11 are shifted in a direction (y-axis direction) orthogonal to the extending direction of the plurality of first grooves 11. there is In other words, the two adjacent first grooves 11 do not overlap even if the center lines of the grooves are extended.

Two second grooves 12 adjacent to each other in the direction in which the plurality of second grooves 12 extend (y-axis direction) are shifted in a direction (x-axis direction) orthogonal to the direction in which the plurality of second grooves 12 extend. are doing. In other words, the two adjacent second grooves 12 do not overlap even if the center lines of the grooves are extended.

Next, the plurality of planar portions 20 and the protrusions 21 included in each of the plurality of planar portions 20 will be described.

As described above, the plurality of first grooves 11 and the plurality of second grooves 12 according to the present embodiment are orthogonal to each other. is different from the arrangement interval of . Therefore, the top view shape of the plurality of planar portions 20 is substantially rectangular.

However, strictly speaking, the top view shape of the plurality of planar portions 20 is not rectangular. This is because each of the plurality of planar portions 20 according to the present embodiment has the projecting portion 21 projecting toward the joint 10 in the connection region 50 .

The protruding portion 21 is a region that each of the plurality of planar portions 20 has, and is a region that protrudes toward the joint 10 in the top view shape of the plurality of planar portions 20 . Of the four corners of the rectangle that is the top-view shape of the plurality of planar portions 20, the protrusion 21 has a corner on the positive x-axis and negative y-axis side and a corner on the negative x-axis and positive y-axis side. are located respectively. Thus, one planar portion 20 may have a plurality of projecting portions 21 . Further, all of the planar portions 20 may have the protruding portions 21 , or some of the planar portions 20 may have the protruding portions 21 . A detailed structure of the projecting portion 21 will be described with reference to FIG.

FIG. 2 is an enlarged top view of the plumbing member 1 in region II of FIG.

As described above, the protrusion 21 is a region that protrudes toward the joint 10 . Specifically, the projecting portion 21 is a region projecting from a straight line forming a boundary line between the joint 10 and each of the plurality of planar portions 20 toward the joint 10 when the plumbing member 1 is viewed from above. In the present embodiment, the protruding portion 21 extends over two of the four sides of the substantially rectangular shape of the plurality of planar portions 20 as viewed from the top. Also, in FIG. 2, the projecting portion 21 is a region marked with a diagonal grid pattern.

With the configuration as described above, the three-forked path is formed by the plurality of first grooves 11, the plurality of second grooves 12, and the projecting portion 21. As shown in FIG. In the present embodiment, the three grooves forming the three-forked path are composed of one first groove 11, one second groove 12, and a groove between two protrusions 21 facing each other. . Also, the groove between the two protrusions 21 facing each other has a concave groove structure like the plurality of first grooves 11 and the plurality of second grooves 12 . The groove between the two protrusions 21 facing each other includes a groove bottom surface and a groove side surface smoothly connected to the groove bottom surface. The bottom surface of the groove is a surface parallel to the tilt direction of the floor member 60, and the side surface of the groove is a wall surface extending in the z-axis direction. Hereinafter, the side surfaces of the grooves included in the plurality of first grooves 11, the plurality of second grooves 12, and the grooves between the two protrusions 21 are simply referred to as groove side surfaces.

Here, the connection region 50 where the plurality of first grooves 11 and the plurality of second grooves 12 are connected will be further described with reference to FIG. It also describes how to determine the components associated with the connection region 50, the connection center point 51, the edge tangent circle 52, the inscribed triangle 56, and the groove connection direction 55. FIG. Here, in particular, an example of a method for determining the connection area 50, the connection center point 51, the circle 52 contacting the end, the inscribed triangle 56, and the groove connection direction 55 will be described.

The connection region 50 is a region where the plurality of first grooves 11 and the plurality of second grooves 12 are connected. A connection region 50 is a region where one first groove 11 and one second groove 12 are connected. Since the water-related member 1 has the plurality of first grooves 11 and the plurality of second grooves 12 , the water-related member 1 has a plurality of connection regions 50 . The connection region 50 is, for example, a dotted region surrounded by a dashed line in FIG. For example, the connection region 50 extends one first groove 11 and one second groove 12 with the groove width W, and extends the one first groove 11 and one second groove 12. This is the region where the regions overlap. As described above, one connection region 50 is a region where one first groove 11 and one second groove 12 are connected, so two connection regions 50 may overlap. In FIG. 2, only the connection region 50 where the first groove 111 and the second groove 112 are connected is illustrated.

For the sake of explanation, the boundaries between the joints 10 and the plurality of planar portions 20 are defined as the ends of the planar portions 20 when the plumbing member 1 is viewed from above. Further, when the plumbing member 1 is viewed from above, the boundary line between the joint 10 and the projecting portion 21 is defined as the end portion of the projecting portion 21 . Furthermore, both the end portions of the plurality of planar portions 20 and the end portions of the projecting portions 21 are collectively referred to as the end portions of the planar portions 20 and the like.

The edge-tangent circle 52 has the center point of the edge-tangent circle 52 inside one connection region 50 . Furthermore, the circle 52 contacting the end is the end of the planar portion 20 contacting one of the plurality of first grooves 11 or one of the plurality of second grooves 12 constituting the one connection region 50. It is a circle that is in contact with three points in the part. Moreover, in the present embodiment, each of the plurality of planar portions 20 has a projecting portion 21 . Therefore, the circle 52 in contact with the end according to the present embodiment contacts one of the plurality of first grooves 11 or one of the plurality of second grooves 12 constituting the one connection region 50. These circles are in contact with three of the ends of the planar portion 20 and the like. In the present embodiment, the circle 52 contacting the ends is in contact with the end of one planar portion 20 and the ends of two projecting portions 21 .

Next, the inscribed triangle 56 is a triangle whose circumscribed circle is the circle 52 in contact with the edge. Also, the inscribed triangle 56 is a triangle that touches the ends of the planar portion 20 at three locations. Moreover, in the present embodiment, each of the plurality of planar portions 20 has a projecting portion 21 . Therefore, in the present embodiment, the inscribed triangle 56 is a triangle contacting the ends of the planar portion 20 and the like at three locations. That is, the ends of the three planar portions 20 and the like with which the inscribed triangle 56 contacts and the ends of the three planar portions 20 and the like with which the circle 52 in contact with the ends are all on the same plane. It is an end portion of the shape portion 20 or the like. Also, in other words, the circle 52 contacting the end is a circle passing through the three vertices of the inscribed triangle 56 .

Here, in this embodiment, the connection center point 51 is the center of gravity of the inscribed triangle 56 .

The groove connection direction 55 is the direction in which each groove forming the three-forked path connects to the connection center point 51 in the connection region 50 . In this embodiment, the groove connecting direction 55 is the direction connecting the midpoint of each side of the inscribed triangle 56 and the center of gravity of the inscribed triangle 56 . Here, the midpoint of each side of the inscribed triangle 56 is the point dividing the length of each side in half. Further, in this embodiment, the groove connection direction 55 includes a first groove connection direction 551 , a second groove connection direction 552 and a third groove connection direction 553 .

Also, the angle formed by the respective groove connection directions 55 is larger than 90° and smaller than 180°. That is, the angle formed between the first groove connection direction 551 and the second groove connection direction 552, the angle formed between the second groove connection direction 552 and the third groove connection direction 553, and the first groove connection direction 551 and the third groove All angles formed with the connection direction 553 are larger than 90° and smaller than 180°. In this embodiment, the angles formed by the groove connection directions 55 are all 120°.

Here, the film member 40 included in the plumbing member 1 will be described with reference to FIG.

FIG. 3 is a cross-sectional view of the plumbing member 1 taken along line III-III of FIG. Specifically, FIG. 3 shows a cross section (xz cross section) perpendicular to the plurality of second grooves 12 .

The film member 40 is positioned on the surfaces of the joint 10 and the plurality of planar portions 20 . Specifically, the film member 40 is provided so as to cover each of the joints 10 (the plurality of second grooves 12 in FIG. 3) and the plurality of planar portions 20 . More specifically, the film member 40 is provided on the entire plumbing member 1 over the plurality of planar portions 20 and the joints 10 between the plurality of planar portions 20 . A groove having substantially the same shape as the joint 10 of the floor member 60 is formed on the upper surface of the film member 40 . The film member 40 is provided so as to follow the shapes of the surfaces of the joint 10 and the plurality of planar portions 20 .

Moreover, as shown in FIG. 3, the cross-sectional shape of the plurality of second grooves 12 is a square without taper, but is not limited to this. The cross-sectional shape of the plurality of second grooves 12 may be V-shaped, U-shaped, or inverted trapezoidal. Note that the cross-sectional shape of the plurality of second grooves 12 may be a rectangle without taper. The cross-sectional shape of the plurality of first grooves 11 is, for example, the same as the cross-sectional shape of the plurality of second grooves 12, but may be different.

In addition, in the present embodiment, the fine grooves 30 are provided on the surface of the film member 40 . The film member 40 is provided over the entire plumbing member 1 over the plurality of planar portions 20 and the joints 10 between the plurality of planar portions 20 . Therefore, the fine grooves 30 are provided in the entire water-related member 1 in the same manner as the film member 40 . Here, detailed structures of the fine grooves 30 and the plurality of recesses 31 will be described with reference to FIGS. 4 and 5. FIG.

FIG. 4 is a cross-sectional view showing an enlarged part of the fine grooves 30 provided on the surface of the plumbing member 1 according to the present embodiment. Specifically, FIG. 4 is a cross-sectional view of the fine groove 30 taken along line IV-IV of the fine groove 30 shown in FIG. Orthogonal cross sections are shown.

The film member 40 includes a base material 41 and a resin layer 42 . The base material 41 is a member that supports the resin layer 42 . The base material 41 is provided on the floor member 60 . Specifically, the base material 41 is provided along the joint 10 and the plurality of planar portions 20 of the floor member 60 .

The base material 41 is, for example, a resin film, metal foil, nonwoven fabric, or the like. Materials for the resin film include polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), polyvinyl acetate (PVAc), and the like. The size and shape of the base material 41 are not particularly limited. The base material 41 has an appropriate size and shape depending on the purpose of use, environment of use, and the like.

The resin layer 42 is provided on the base material 41 . The resin layer 42 is formed using, for example, a photocurable resin material such as an ultraviolet curable resin. Silicone-based resins, acrylic-based resins, urethane-based resins, and the like can be used as the ultraviolet curable resin. The thickness of the resin layer 42 is, for example, 1 μm or more and 50 μm or less, but is not limited to this.

The resin layer 42 has fine grooves 30 as shown in FIG. The fine grooves 30 are provided on the upper surface of the resin layer 42 and are provided on the uppermost surface of the plumbing member 1 . That is, when the plumbing member 1 is used as a floor member or the like, the fine grooves 30 are exposed on the outermost surface.

In the present embodiment, the water contact angle θ of the material forming the fine grooves 30, that is, the material of the resin layer 42, is less than 90°. That is, the resin layer 42 is formed using a hydrophilic material.

In addition, the fine grooves 30 are hydrophilic. Since the resin layer 42, which is the material forming the fine grooves 30, is formed using a hydrophilic material, the fine grooves 30 are hydrophilic.

As described with reference to FIG. 3 , the film member 40 is provided along the joints 10 and the plurality of planar portions 20 of the floor member 60 . Therefore, the fine grooves 30 provided on the upper surface of the film member 40 , that is, the upper surface of the resin layer 42 are provided on the surfaces of the joints 10 and the plurality of planar portions 20 . More specifically, the fine grooves 30 are provided continuously on the surfaces of the joint 10 and the plurality of planar portions 20 .

Furthermore, as shown in FIG. 4, the plurality of recesses 31 of the fine groove 30 are provided in stripes. That is, the fine groove 30 has a plurality of groove-shaped recesses 31, and the plurality of recesses 31 are provided in a stripe shape. A plurality of recesses 31 are provided side by side along a direction orthogonal to the extending direction of the plurality of recesses 31 . Moreover, a convex portion is provided between two adjacent concave portions 31 . That is, the fine groove 30 has an uneven structure with a striped shape when viewed from above. The striped shape is a shape in which a plurality of concave portions 31 extending substantially parallel to each other are arranged at predetermined intervals while extending like grooves.

Note that the stripe shape is a shape in which lines and spaces are arranged alternately and extend in the same direction, and is also called a line-and-space shape. A plurality of concave portions 31 correspond to spaces, and a convex portion existing between two adjacent concave portions 31 corresponds to a line. The multiple recesses 31 do not cross each other.

Although the shapes of the plurality of recesses 31 are the same as each other, they may be different from each other. Moreover, although the arrangement intervals of the plurality of concave portions 31 are equal, they may be different.

The shape of the plurality of recesses 31 of the fine groove 30 will be described in detail below with reference to FIG.

FIG. 5 is a cross-sectional view showing an enlarged region V in FIG. FIG. 5 shows a cross section of a plurality of recesses 31 of fine grooves 30 of plumbing member 1 according to the present embodiment. FIG. 5 also shows an enlarged view of the first end portion 34a present in each opening of the plurality of recesses 31 within the range surrounded by the rectangular frame of the dashed-dotted line.

In the cross section orthogonal to the direction in which the plurality of recesses 31 according to the present embodiment extends, the shape of the plurality of recesses 31 is an inverted trapezoid, but is not limited to this. For example, the cross-sectional shape of the plurality of recesses 31 may be V-shaped, U-shaped, square, rectangular, semicircular, or the like. The fine grooves 30 provided in the plumbing member 1 may have a plurality of recesses 31 having different cross-sectional shapes.

The multiple recesses 31 have a first side surface 32a, a second side surface 32b, a bottom surface 33, a first end 34a, and a second end 34b. In this embodiment, the first side surface 32a, the second side surface 32b and the bottom surface 33 are each flat. The first side surface 32 a and the second side surface 32 b are inclined with respect to the bottom surface 33 . The inclination angle of the first side surface 32a with respect to the bottom surface 33 is equal to the inclination angle of the second side surface 32b with respect to the bottom surface 33, but may be different. In the present embodiment, the plurality of recesses 31 have line-symmetrical shapes in a cross-sectional view. That is, the cross-sectional shape of the plurality of recesses 31 is an upside-down isosceles trapezoid.

In addition, when the cross-sectional shape is rectangular, the first side surface 32 a and the second side surface 32 b are perpendicular to the bottom surface 33 . Moreover, when the cross-sectional shape is U-shaped, the bottom surface 33 is a curved surface. Moreover, when the cross-sectional shape is V-shaped or semicircular, the plurality of recesses 31 do not have the bottom surface 33 . When the cross-sectional shape is semicircular, each of the first side surface 32a and the second side surface 32b is a curved surface. be.

The first end 34a and the second end 34b are opening ends of the plurality of recesses 31 in the cross section shown in FIG. 5, and are portions facing each other. Each of the first end 34a and the second end 34b is smooth.

Specifically, each of the first end 34a and the second end 34b has a curved surface with a predetermined curvature. For example, in the cross-section shown in FIG. 5, the first end 34a describes a portion of a circle of radius R. As shown in FIG. The first end portion 34a is part of the side surface of the cylinder whose axis is the direction in which the recesses 31 extend. The same applies to the second end 34b. Each of the first end portion 34a and the second end portion 34b does not include a corner, that is, does not include a plane (straight line in cross-sectional view). Also, the first end portion 34a is smoothly connected to the first side surface 32a, for example. The second end 34b is, for example, smoothly connected to the second side surface 32b.

A radius R of each of the first end portion 34a and the second end portion 34b is, for example, 100 nm or more. As a result, it is possible to prevent the resin material from remaining in the mold when the plurality of concave portions 31 are molded by imprinting using the mold. Moreover, the radius R is, for example, 2 mm or less. As a result, for example, a hydrophilic material with a water contact angle of about 10° is used, and even when the depth H of the plurality of recesses 31 is 100 μm or less in order to suppress the accumulation of dirt in the plurality of recesses 31, the plurality of The recessed portions 31 can wet and spread water present in the plurality of recessed portions 31 .

In the cross section shown in FIG. 5, A is the length along the wall surface of the plurality of recesses 31 between a first point P1 on the first end 34a and a second point P2 on the second end 34b; Let B be the linear distance between the first point P1 and the second point P2. Specifically, length A is represented by the sum of length A1, length A2, and length A3. The straight line distance B corresponds to the opening width of the recesses 31 .

The length A1 is the sum of the length of the curved portion from the first point P1 to the first side surface 32a at the first end 34a and the length of the straight portion of the first side surface 32a. The length A2 is the sum of the length of the curved portion from the second point P2 to the second side surface 32b at the second end 34b and the length of the straight portion of the second side surface 32b. Length A3 is the width of bottom surface 33 .

In this embodiment, the depth H and the linear distance B of the plurality of recesses 31 are on the order of micrometers. That is, the depth H and the linear distance B are each 1 μm or more and shorter than 1 mm. Also, the depth H of the plurality of recesses 31 means the depth of the fine grooves 30 . For example, the depth H may be 5 μm or more and 150 μm or less. Also, the linear distance B may be 10 μm or more and 300 μm or less. Note that the depth H of the plurality of recesses 31 is the distance from the straight line connecting the first point P1 and the second point P2 to the bottom surface 33 .

In addition, the width of the plurality of recesses 31 can be regarded as the linear distance B. As shown in FIG. Alternatively, the width of the plurality of recesses 31 may be regarded as the width of the bottom surface 33, that is, the length A3. Alternatively, the width of the plurality of recesses 31 may be regarded as the average value of the linear distance B and the length A3. Also, the width of the plurality of recesses 31 means the width of the fine groove 30 .

Also, the extending direction of the plurality of recesses 31 and the respective groove connection directions 55 are not parallel. That is, in the present embodiment, none of the extending direction of the plurality of recesses 31 and the three groove connecting directions 55 are parallel. In the present embodiment, the extending direction of the recesses 31 is parallel to the x-axis.

In the cross section shown in FIG. 5, the angle θ formed by the tangent line L4 at the first end 34a passing through the first point P1 and the horizontal plane L3 is the water contact angle of the member having the plurality of recesses 31, that is, the film member 40. equal to the angle θ. In other words, among arbitrary points on the first end portion 34a, the point at which the angle θ formed by the tangent line L4 to the first end portion 34a and the horizontal plane L3 is equal to the water contact angle θ of the film member 40 is the first point. point P1.

The same applies to the second point P2. That is, the angle formed by the tangent line at the second end portion 34b passing through the second point P2 and the horizontal plane L3 is also equal to the water contact angle θ. Thus, the first point P1 and the second point P2 are each determined based on the water contact angle θ. Therefore, the length A and the linear distance B determined based on the first point P1 and the second point P2 are also determined based on the water contact angle θ.

Here, an example in which the first end portion 34a and the second end portion 34b have curved surfaces is shown, but the present invention is not limited to this. The first end portion 34a and the second end portion 34b may be represented by one point in a cross-sectional view. In other words, the first end portion 34a and the second end portion 34b may be edges of the upper surfaces of the plurality of recesses 31, respectively. The first side surface 32a and the second side surface 32b may be directly connected to the edges of the upper surfaces of the plurality of recesses 31, respectively. In this case, the first point P1 and the second point P2 respectively correspond to the edges of the upper surfaces of the plurality of recesses 31, that is, the first end portion 34a and the second end portion 34b represented by one point in a cross-sectional view. do.

In the present embodiment, the length A [unit: m], the linear distance B [unit: m], and the water contact angle θ satisfy formula (1).

This corresponds to a condition in which the plurality of recesses 31 cause capillary action along the extending direction of the plurality of recesses 31 .

Since the upper surfaces corresponding to the linear distance B are open in the plurality of recesses 31, the upper surfaces can be regarded as completely water-repellent surfaces. In other words, the water contact angle of the top surface can be considered to be 180°.

Accordingly, a capillary force (capillary force) P _c [unit: N] generated by capillary action is represented by the following equation (2).

σ is the surface tension of water [unit: N/m], and S is the cross-sectional area of the plurality of concave portions 31 [unit: m ² ]. The cross-sectional area of the plurality of recesses 31 corresponds to the area surrounded by the wall surface of the plurality of recesses 31 and the straight line connecting the first point P1 and the second point P2 in the cross section shown in FIG.

When the capillary force P _c is greater than 0, capillary action occurs in the extending direction of the plurality of recesses 31 in the plurality of recesses 31 . In this way, in order for the capillary action to occur, P _c >0 holds true in equation (2), so the relationship of equation (1) described above is derived.

Due to the occurrence of capillary action in the plurality of recesses 31 , the water that has entered the plurality of recesses 31 advances through the plurality of recesses 31 along the extending direction of the plurality of recesses 31 . In other words, water tends to spread over a wide area on the surface of the plumbing member 1 due to capillary action. By spreading the water over a wide area, the surface area of the water exposed to the air is increased, shortening the time required for drying.

In the present embodiment, fine grooves 30 having a plurality of recesses 31 are provided across a plurality of planar portions 20 and joints 10 . That is, for example, when the water sprayed on the plumbing member 1 remains in the joint 10, the water remaining in the plurality of recesses 31 on the joint 10 is dispersed into a plurality of water by capillary action generated in the plurality of recesses 31. It is pumped up to the planar portion 20 . This enhances the drying performance of the plumbing member 1 according to the present embodiment.

As described above, the plumbing member 1 according to the present embodiment is arranged in stripes on the surface of the joint 10 and the plurality of planar portions 20, and at least one of the width and the depth H is micrometers. A fine groove 30 having a plurality of groove-shaped recesses 31 of an order is provided. Moreover, the surface of the fine groove 30 has hydrophilicity.

As a result, the water droplets scattered on the surface of the plumbing member 1 easily spread over the surface of the plumbing member 1, that is, the surface area of the water in contact with the air increases. Therefore, the drying performance of the plumbing member 1 is enhanced.

Further, as described above, the plurality of recesses 31 according to the present embodiment have a width of 10 μm or more and 300 μm or less and a depth H of 5 μm or more and 150 μm or less.

Thereby, capillary action can be effectively generated. For example, when the width of the plurality of recesses 31 is 10 μm or more or the depth H is 5 μm or more, the cross-sectional area of the plurality of recesses 31 can be secured, and water can easily progress through the plurality of recesses 31. can be done. Further, for example, when the width of the plurality of recesses 31 is 300 μm or less or the depth H is 150 μm or less, excellent drying performance can be achieved.

Moreover, the film member 40 having the fine grooves 30 is manufactured using a transfer technique using, for example, a nanoimprinting device or a roll-to-roll gravure printing device.

Specifically, a resin film is formed on the base material 41 by applying an ultraviolet curable resin material that constitutes the resin layer 42 to the surface of the base material 41 . By pressing a mold having an uneven structure for transferring the fine grooves 30 (that is, a structure in which the fine grooves 30 are inverted) against the resin film and irradiating ultraviolet rays from the substrate 41 side in the pressed state, Curing the resin film. Thereby, the resin layer 42 having the fine grooves 30 is formed. Finally, by removing the mold, the film member 40 having the fine grooves 30 is formed. By attaching the formed film member 40 to the surface of the floor member 60, the plumbing member 1 is manufactured.

Moreover, as described above, the film member 40 is positioned on the surfaces of the joint 10 and the plurality of planar portions 20 , and the fine grooves 30 are provided on the surface of the film member 40 .

As described above, the film member 40 having the fine grooves 30 is manufactured separately from the floor member 60 . By providing the film member 40 on the surface of the joint 10 and the plurality of planar portions 20, that is, on the surface of the floor member 60, the plumbing member 1 can be obtained, which facilitates manufacturing.

[Behavior during drainage]
The behavior of the plumbing member 1 according to the present embodiment at the time of drainage will be described with reference to FIGS. 6 and 7. FIG.

First, FIG. 6 is used to show the behavior of the water-related member 1h of the comparative example during drainage. Although the details will be described later, the water-related member 1h of the comparative example is one example of lower drainage performance than the water-related member 1 of the present embodiment.

FIG. 6 is a top view for explaining the behavior of water 80 at the time of draining the water-related member 1h of the comparative example. FIG. 6 is an enlarged top view of a portion corresponding to the first floor member in the water-related member 1h of the comparative example. More specifically, (a) of FIG. 6 shows the state immediately after the water 80 is sprayed on the water-related member 1h of the comparative example. FIG. 6(b) shows a state in which drainage is completed in the water-related member 1h of the comparative example. FIG. 6(c) is a top view showing an enlarged region VI of FIG. 6(b). In (a) and (b) of FIG. 6, the range in which the water 80 remains is schematically indicated by dots. Also, in FIG. 6(c), the dots indicating the range where the water 80 remains are omitted.

Here, the configuration of the water-related member 1h of the comparative example will be described, focusing on the points different from the water-related member 1 according to the present embodiment.

A water-related member 1h of the comparative example includes a joint 10h configured by a plurality of grooves and a plurality of planar portions 20h partitioned by the joint 10h. The plurality of grooves include a plurality of first grooves 11h extending in a predetermined direction and a plurality of second grooves 12h extending in a direction different from the plurality of first grooves 11h.

The joints 10 are provided in a grid pattern. That is, the joint 10 is, for example, a through joint (also referred to as a "potato joint").

Two first grooves 11h adjacent to each other in the extending direction (x-axis direction) of the plurality of first grooves 11h are positioned to overlap each other when the center lines of the grooves are extended. Two second grooves 12h adjacent to each other in the extending direction (y-axis direction) of the plurality of second grooves 12h are positioned at overlapping positions when the center lines of the grooves are extended. That is, the intersection area where one first groove 11h and one second groove 12h intersect forms a cross (cruciform shape). The crossroad is an area where four grooves including two first grooves 11h adjacent in the x-axis direction and two second grooves 12h adjacent in the y-axis direction gather and intersect.

A top view shape of the plurality of planar portions 20h is a rectangle, and the plurality of planar portions 20h does not have a projecting portion.

In addition, in the water-related member 1h of the comparative example, a part corresponding to the first floor member is inclined along the inclination direction D1, and drains water in the inclination direction D1.

First, with reference to FIG. 6(a), the state immediately after the water 80 is sprayed on the water-related member 1h of the comparative example will be described.

When the water 80 is sprinkled on the plumbing member 1h, most of the water 80 flows down in the inclination direction D1 (the positive direction of the y-axis) based on the inclination of the plumbing member 1h of the comparative example and is drained. . As shown in (a) of FIG. 6, part of the water 80 that has not flowed down falls into the plurality of first grooves 11h and the plurality of second grooves 12h according to gravity, and It remains in the second groove 12h. At this stage, the plurality of first grooves 11 h and the plurality of second grooves 12 h are filled with water 80 .

As the drainage progresses further, as shown in FIG. 6(b), the water 80 in the crossroads disappears, and the water 80 in the plurality of first grooves 11h and the plurality of second grooves 12h remains. The mechanism of this phenomenon is explained using the surface tension of the groove side surfaces of the plurality of first grooves 11h or the plurality of second grooves 12h and the surface tension of the water 80 itself.

In the plurality of first grooves 11h and the plurality of second grooves 12h, the water 80 is strongly affected by the surface tension of the groove side surfaces and strongly attracted to the plurality of first grooves 11h and the plurality of second grooves 12h. Therefore, the water 80 in the plurality of first grooves 11h and the plurality of second grooves 12h remains in the plurality of first grooves 11h and the plurality of second grooves 12h without flowing down in the inclination direction D1.

On the other hand, the cross roads include regions with a greater distance to the groove side surfaces than the plurality of first grooves 11h and the plurality of second grooves 12h. As shown in FIG. 6(c), the crossroad has a region 90h where the distance to the groove side surface is W/2 or more. Of course, the plurality of first grooves 11h and the plurality of second grooves 12h do not have regions 90h where the distance to the groove side faces is W/2 or more. In this way, the water 80 is less likely to be affected by the surface tension of the groove side surface in the region where the distance to the groove side surface is large. Also, the surface tension of the water 80 acts on the water 80 to minimize the surface area, and the water 80 moves so as to attract each other. Therefore, the water 80 at the crossroads is strongly attracted to the water 80 remaining in the plurality of first grooves 11h and the plurality of second grooves 12h. Therefore, the water 80 at the crossroads disappears.

The water 80 in the plurality of first grooves 11h and the plurality of second grooves 12h are continuously connected, and the water 80 flows in the inclination direction D1, thereby effectively draining water. As shown in (b) of FIG. 6 , the water 80 disappears at the crossroads and the water 80 is interrupted, so that the water 80 remains in the plurality of first grooves 11 h and the plurality of second grooves 12 h without being drained. do. That is, the drainage performance of the water-related member 1h of the comparative example is low.

In summary, in the water-related member 1h of the comparative example, due to the surface tension of the groove side surfaces of the plurality of first grooves 11h or the plurality of second grooves 12h and the surface tension of the water 80 itself, the water 80 breaks off at the crossroads. , the water 80 remains in the plurality of first grooves 11h or the plurality of second grooves 12h. Therefore, the drainage performance of the water-related member 1h of the comparative example is low.

Next, FIG. 7 shows the behavior of the water 80 when the plumbing member 1 according to the present embodiment drains water. FIG. 7 is a top view for explaining the behavior of the plumbing member 1 according to the present embodiment during drainage. FIG. 7 is an enlarged top view of a portion corresponding to the first floor member 61 in the plumbing member 1 according to the present embodiment. More specifically, (a) of FIG. 7 shows a state immediately after water 80 is sprayed on plumbing member 1 according to the present embodiment. FIG. 7(b) shows a state in which drainage has been completed in the plumbing member 1 according to the present embodiment. FIG. 7(c) is a top view showing an enlarged region VII of FIG. 7(b). In (a) and (b) of FIG. 7, the range in which the water 80 remains is schematically indicated by dots. Also, in FIG. 7(c), the dots indicating the range where the water 80 remains are omitted.

When the water 80 is sprinkled on the plumbing member 1, most of the water 80 flows down in the inclination direction D1 (positive direction of the y-axis) based on the inclination of the plumbing member 1 and is drained. As shown in (a) of FIG. 7 , part of the water 80 that has not flowed down falls into the plurality of first grooves 11 and the plurality of second grooves 12 due to gravity and remains in the joint 10 . At this stage, the plurality of first grooves 11 and the plurality of second grooves 12 are filled with water 80 .

As the water is drained further, as shown in FIG. 7B, the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is continuously drained in the inclination direction D1. In other words, unlike the water-related member 1h of the comparative example, in the water-related member 1 according to the present embodiment, the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is continuously connected to drain water. Water flows in the direction

The mechanism of this phenomenon is explained as follows. Unlike the water-related member 1h of the comparative example, the water-related member 1 according to the present embodiment does not have a crossroad. On the other hand, the plumbing member 1 according to the present embodiment has a three-way intersection. Further, the angle between the respective groove connection directions 55 is greater than 90° and less than 180°. The three-forked road formed in this way has a narrower region where the distance to the groove side surface is greater than that of the crossed road. As shown in (c) of FIG. 7, the three-way intersection has a narrower area 90 where the distance to the side surface of the groove is W/2 or more compared to the crossroad.

That is, the three-forked road according to the present embodiment can narrow the region where the water 80 is less susceptible to the surface tension of the groove side surfaces than the crossroads. Therefore, in the plumbing member 1 according to the present embodiment having the three-forked path, the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is less likely to be interrupted, and the plurality of first grooves 11 and the plurality of second grooves Water 80 in 12 is sufficiently drained. In other words, the plumbing system member 1 according to the present embodiment has excellent drainage performance.

Moreover, in the present embodiment, the three-forked path is formed by the plurality of first grooves 11, the plurality of second grooves 12, and the projecting portion 21. As shown in FIG. That is, one of the three grooves forming the three-forked path according to the present embodiment is formed by the groove between the two protrusions 21 facing each other. By providing the protruding portion 21, it is possible to control the groove width in the three-forked road and narrow the area where the water 80 is less susceptible to the surface tension of the groove side surface. As a result, the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is less likely to be interrupted, and the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is sufficiently drained. That is, it is possible to improve the drainage performance of the plumbing member 1 according to the present embodiment.

In this embodiment, the angles formed by the groove connection directions 55 are all 120°. Therefore, in the three-way intersection, the area where the water 80 is less likely to be affected by the surface tension of the groove side surfaces can be made narrower. As a result, the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is less likely to be interrupted, and the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is sufficiently drained. That is, it is possible to further improve the drainage performance of the plumbing member 1 according to the present embodiment.

Also, the extending direction of the plurality of recesses 31 and the respective groove connection directions 55 are not parallel. For example, in the present embodiment, the direction in which the recesses 31 extend is parallel to the x-axis.

As described above, by pumping up water from the joints 10 to the plurality of planar portions 20, the drying performance of the plumbing member 1 is enhanced. For example, consider a case where water remains at the connection center point 51 in a three-way intersection. There is always a groove in the groove connection direction 55 viewed from the connection center point 51, and in the groove connection direction 55 viewed from the connection center point 51, the distance between the connection center point 51 and the end of the planar portion 20 or the like is relatively long. is the direction. Therefore, the extending direction of the plurality of recesses 31 and the groove connection direction 55 are not parallel to each other, so that water can be pumped up from the joint 10 to the plurality of planar portions 20 more quickly. can improve the drying performance of

In addition, the three-forked road may form a Y shape. By forming the three-way intersection in a Y shape, it is possible to further narrow the area of the three-way intersection where the water 80 is less likely to be affected by the surface tension of the groove side surfaces. As a result, the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is less likely to be interrupted, and the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is sufficiently drained. That is, it is possible to further improve the drainage performance of the plumbing member 1 according to the present embodiment.

Further, as shown in FIG. 1, the plumbing member 1 according to the present embodiment is a floor material used for the floor of a bathroom or the like. Moreover, the bathroom member in the present embodiment includes a plumbing member 1 . The bathroom member is provided in the bathroom and is a member for quickly draining water toward the drain port 2. - 特許庁In such a bathroom member, the plumbing member 1 has a three-forked path. Also, in the connection region forming the three-forked path, the angle formed by the respective groove connection directions 55 is greater than 90° and less than 180°. Therefore, in the three-way intersection, it is possible to narrow the area where the water 80 is less susceptible to the surface tension of the groove side surfaces. As a result, the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is less likely to be interrupted, and the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is sufficiently drained. That is, the bathroom member according to this embodiment has excellent drainage performance.

[Effects, etc.]
As described above, the plumbing member 1 according to the present embodiment includes the joints 10 formed by a plurality of grooves and the plurality of planar portions 20 partitioned by the joints 10 . The multiple grooves include multiple first grooves 11 extending in a predetermined direction and multiple second grooves 12 extending in a direction different from the multiple first grooves 11 . Further, the plurality of first grooves 11, the plurality of second grooves 12, and the plurality of planar portions 20 form a three-forked path in the connection region 50 where the plurality of first grooves 11 and the plurality of second grooves 12 are connected. do. When the groove connecting direction 55 is the direction in which each groove forming the three-way junction connects to the connection center point 51 in the connection region 50, the angle formed by the groove connecting directions 55 is greater than 90° and less than 180°. .

As a result, in the three-way intersection, the area where the water 80 is less likely to be affected by the surface tension of the groove side surfaces can be narrowed. As a result, the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is less likely to be interrupted, and the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is sufficiently drained. In other words, the plumbing system member 1 according to the present embodiment has excellent drainage performance.

Further, each of the plurality of planar portions 20 according to the present embodiment has a protruding portion 21 protruding toward the joint 10 in the connection region 50, and the three-forked path includes the plurality of first grooves 11 and the plurality of It is formed by the second groove 12 and the projecting portion 21 .

As a result, it is possible to control the width of the groove at the three-forked road and narrow the area where the water 80 is not easily affected by the surface tension of the side surface of the groove. As a result, the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is less likely to be interrupted, and the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is sufficiently drained. That is, it is possible to improve the drainage performance of the plumbing member 1 according to the present embodiment.

Moreover, in the plumbing member 1 according to the present embodiment, the three-way intersection forms a Y shape.

As a result, in the three-way intersection, the area where the water 80 is less likely to be affected by the surface tension of the groove side surfaces can be made narrower. As a result, the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is less likely to be interrupted, and the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is sufficiently drained. That is, it is possible to further improve the drainage performance of the plumbing member 1 according to the present embodiment.

Further, in the plumbing member 1 according to the present embodiment, the angle formed by the groove connection directions 55 is 120°.

As a result, in the three-way intersection, the area where the water 80 is less likely to be affected by the surface tension of the groove side surfaces can be made narrower. As a result, the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is less likely to be interrupted, and the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is sufficiently drained. That is, it is possible to further improve the drainage performance of the plumbing member 1 according to the present embodiment.

In addition, the plumbing member 1 according to the present embodiment is further provided with stripes on the surface of the joint 10 and the plurality of planar portions 20, and at least one of the width and the depth H is on the order of micrometers. A fine groove 30 having a plurality of groove-shaped recesses 31 is provided. Moreover, the surface of the fine groove 30 has hydrophilicity.

As a result, the water droplets scattered on the surface of the plumbing member 1 easily spread over the surface of the plumbing member 1, that is, the surface area of the water in contact with the air increases. Therefore, the drying performance of the plumbing member 1 is enhanced.

In addition, in the plumbing member 1 according to the present embodiment, the extending direction of the plurality of recesses 31 and the respective groove connection directions 55 are not parallel.

As a result, water can be pumped up more quickly from the joint 10 to the plurality of planar portions 20, and the drying performance of the plumbing member 1 can be enhanced.

Further, in the plumbing member 1 according to the present embodiment, the plurality of recesses 31 have a width of 10 μm or more and 300 μm or less and a depth H of 5 μm or more and 150 μm or less.

Thereby, capillary action can be effectively generated. For example, when the width of the plurality of recesses 31 is 10 μm or more or the depth H is 5 μm or more, the cross-sectional area of the plurality of recesses 31 can be secured, and water can easily progress through the plurality of recesses 31. can be done. Further, for example, when the width of the plurality of recesses 31 is 300 μm or less or the depth H is 150 μm or less, excellent drying performance can be achieved.

Moreover, the plumbing member 1 according to the present embodiment further includes a film member 40 located on the surfaces of the joint 10 and the plurality of planar portions 20, and the fine grooves 30 are provided on the surface of the film member 40. .

As a result, the film member 40 is separated from the floor member 60 and manufactured separately. Since the surrounding member 1 can be obtained, manufacturing is facilitated.

Moreover, the bathroom member according to the present embodiment includes the plumbing member 1 described above.

As a result, in the three-way intersection, the area where the water 80 is less likely to be affected by the surface tension of the groove side surfaces can be narrowed. As a result, the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is less likely to be interrupted, and the water 80 in the plurality of first grooves 11 and the plurality of second grooves 12 is sufficiently drained. That is, the bathroom member according to this embodiment has excellent drainage performance.

(Modification 1 of Embodiment 1)
As described above, in Embodiment 1, the configuration in which the projections 21 are present at the corners of the plurality of planar portions 20 that are rectangular in top view is shown. However, it is not limited to this configuration. Here, a plumbing member 1a according to Modification 1 of Embodiment 1 will be described with reference to FIG.

FIG. 8 is a top view of a plumbing member 1a according to this modification. More specifically, FIG. 8(a) is a top view of the entire plumbing member 1a according to this modification, and FIG. 8(b) is a dotted line shown in FIG. 8(a). It is the top view which expanded the enclosed rectangular area.

Here, regarding the water-related member 1a of Modification 1, the differences from the water-related member 1 according to Embodiment 1 will be mainly described. The water-related member 1a has the same configuration as the water-related member 1 of Embodiment 1, except for the top view shape of the plurality of planar portions 20a and the arrangement of the joints 10a. Specifically, it is as follows.

First, with reference to FIG. 8(a), an outline of a water-related member 1a according to Modification 1 of Embodiment 1 will be described.

The plumbing member 1a includes a joint 10a formed by a plurality of grooves, a plurality of planar portions 20a separated by the joint 10a, a floor member 60, and a drain port 2.

Moreover, the joint 10a is a joint formed by a plurality of grooves. The plurality of grooves includes a plurality of first grooves 11a extending in a predetermined direction and a plurality of second grooves 12a extending in a direction different from the plurality of first grooves 11a. The plurality of first grooves 11a, the plurality of second grooves 12a, and the plurality of planar portions 20a form a three-forked path in a connection region 50a where the plurality of first grooves 11a and the plurality of second grooves 12a are connected.

Here, the detailed structure of the joint 10a and the plurality of planar portions 20a will be described with reference to FIG. 8(b).

The joint 10a is composed of a plurality of grooves. Moreover, as shown in FIG. 8(b), the joint 10a is, for example, a horse-tread joint. That is, two planar portions 20a adjacent to each other in the x-axis direction are arranged with a shift of half the longitudinal length of the plurality of planar portions 20a in the y-axis direction.

The plurality of first grooves 11a are parallel to each other and arranged at regular intervals. Specifically, the plurality of first grooves 11a each extend in the x-axis direction and are arranged side by side along the y-axis direction.

The plurality of second grooves 12a are parallel to each other and arranged at regular intervals. Specifically, each of the plurality of second grooves 12a extends in the y-axis direction and is provided side by side along the x-axis direction. That is, the plurality of first grooves 11a and the plurality of second grooves 12a are orthogonal to each other.

Next, the projecting portion 21a of each of the plurality of planar portions 20a will be described.

As described above, the plurality of first grooves 11a and the plurality of second grooves 12a are orthogonal to each other, and the spacing between the plurality of first grooves 11a and the spacing between the plurality of second grooves 12a are different. Therefore, the top view shape of the plurality of planar portions 20a is substantially rectangular.

However, strictly speaking, the top view shape of the plurality of planar portions 20a is not rectangular. This is because the plurality of planar portions 20a have protrusions 21a in the connection regions 50a.

The protruding portion 21a is a region that each of the plurality of planar portions 20a has, and is a region that protrudes toward the joint 10a in the top view shape of the plurality of planar portions 20a. Moreover, the protruding portion 21a according to this modified example has a semicircular shape. The protruding portion 21a has four sides of a rectangle that is the top view shape of the plurality of planar portions 20a, and is a side that is in contact with a connection region 50a where one first groove 11a and one second groove 12a are connected. Located in

Moreover, in this modified example, the three-forked path is formed by a plurality of first grooves 11a, a plurality of second grooves 12a, and a projecting portion 21a. Specifically, one of the three grooves forming the three-forked path is constituted by one first groove 11a. The other two grooves among the three grooves forming the three-forked path are formed by the grooves between the projecting portion 21a and the facing planar portion 20a. Further, the grooves between the projecting portion 21a and the facing planar portion 20a are also the plurality of second grooves 12a.

Thus, one planar portion 20a may have one projecting portion 21a. Further, all of the planar portions 20a may have the protruding portions 21a, or some of the planar portions 20 may have the protruding portions 21. FIG. With such a configuration, in the connection region 50a, the region where the water 80 is less susceptible to the surface tension of the groove side surface can be narrowed.

In summary, the plumbing member 1a according to this modified example has a three-way intersection. Also, in the connection region 50a forming the three-forked path, the angle formed by the respective groove connection directions is greater than 90° and less than 180°. Therefore, in the three-way intersection, it is possible to narrow the area where the water 80 is less susceptible to the surface tension of the groove side surfaces. As a result, the water 80 in the plurality of first grooves 11a and the plurality of second grooves 12a is less likely to be interrupted, and the water 80 in the plurality of first grooves 11a and the plurality of second grooves 12a is sufficiently drained. That is, the plumbing member 1a according to the present embodiment has excellent drainage performance.

(Modification 2 of Embodiment 1)
As described above, in Embodiment 1, one of the plurality of planar portions 20 has two projecting portions 21 . However, it is not limited to this configuration. Here, a plumbing member 1b according to Modification 2 of Embodiment 1 will be described with reference to FIG.

FIG. 9 is a top view of a plumbing member 1b according to this modification. More specifically, (a) of FIG. 9 is a top view of the entire plumbing member 1b according to this modification, and (b) of FIG. It is the top view which expanded the enclosed rectangular area.

Here, the plumbing member 1b of Modification 1 of the present embodiment will be described, focusing on differences from the plumbing member 1 according to Embodiment 1. FIG. The water-related member 1b has the same configuration as the water-related member 1 of Embodiment 1, except for the top view shape of the plurality of planar portions 20b and the arrangement of the joints 10b. Specifically, it is as follows.

First, with reference to (a) of FIG. 9, an outline of a water-related member 1b of Modification 2 of Embodiment 1 will be described.

The plumbing member 1b includes a joint 10b formed by a plurality of grooves, a plurality of planar portions 20b separated by the joint 10b, a floor member 60, and a drain port 2.

Also, the joint 10b is a joint formed by a plurality of grooves. The plurality of grooves include a plurality of first grooves 11b extending in a predetermined direction and a plurality of second grooves 12b extending in a direction different from the plurality of first grooves 11b. The plurality of first grooves 11b, the plurality of second grooves 12b, and the plurality of planar portions 20b form a three-forked path in a connection region 50b where the plurality of first grooves 11b and the plurality of second grooves 12b are connected.

Here, the detailed structure of the joint 10b and the plurality of planar portions 20b will be described with reference to FIG. 9(b).

The joint 10b is composed of a plurality of grooves. Further, as shown in FIG. 9B, the plurality of planar portions 20b separated by the joints 10b are arranged in, for example, a French-patterned shape.

The plurality of first grooves 11b are parallel to each other and are not arranged at regular intervals. Specifically, the plurality of first grooves 11b each extend in the x-axis direction and are arranged side by side along the y-axis direction.

The plurality of second grooves 12b are parallel to each other and arranged at regular intervals. Specifically, the plurality of second grooves 12b each extend in the y-axis direction and are arranged side by side along the x-axis direction. That is, the plurality of first grooves 11b and the plurality of second grooves 12b are orthogonal to each other.

Next, the projecting portion 21b included in each of the plurality of planar portions 20b will be described.

As described above, the plurality of planar portions 20b are arranged in a French-patterned shape. That is, there are two types of planar portions 20b having different lengths in one direction (the y-axis direction in this modified example). Here, for the sake of explanation, the plurality of planar portions 20b are defined as being composed of a planar portion 20b1 having a longer length in one direction and a planar portion 20b2 having a shorter length in one direction. .

As described above, the plurality of planar portions 20b are arranged in a French-patterned shape. Furthermore, the plurality of first grooves 11b and the plurality of second grooves 12b are orthogonal to each other, and the spacing between the plurality of first grooves 11b and the spacing between the plurality of second grooves 12b are different. Therefore, the top view shape of the plurality of planar portions 20b is substantially rectangular.

However, the top view shape of the planar portion 20b1, which is one type of the plurality of planar portions 20b, is not strictly rectangular. This is because the planar portion 20b1 has the projecting portion 21b in the connection region 50b.

The protruding portion 21b is a region that each of the plurality of planar portions 20b has, and is a region that protrudes toward the joint 10b in the top view shape of the plurality of planar portions 20b. The projecting portions 21b are positioned at four corners of a rectangular shape of the planar portion 20b1 when viewed from above. Thus, one planar portion 20b1 may have a plurality of projecting portions 21b. With such a configuration, it is possible to narrow the area in the connection area 50b where the water 80 is less susceptible to the surface tension of the groove side surface.

A plumbing member 1b according to this modification includes a three-way intersection. Also, in the connection region 50b forming the three-forked path, the angle formed by the respective groove connection directions is greater than 90° and less than 180°. Therefore, in the three-way intersection, it is possible to narrow the area where the water 80 is less susceptible to the surface tension of the groove side surfaces. As a result, the water 80 in the plurality of first grooves 11b and the plurality of second grooves 12b is less likely to be interrupted, and the water 80 in the plurality of first grooves 11b and the plurality of second grooves 12b is sufficiently drained. In other words, the plumbing member 1b according to the present embodiment has excellent drainage performance.

(Embodiment 2)
As described above, in the first embodiment, each of the plurality of planar portions 20 has the projecting portion 21 . However, it is not limited to this configuration. Here, a plumbing member 1c according to Embodiment 2 will be described with reference to FIG.

FIG. 10 is a top view of a plumbing member 1c according to this embodiment. More specifically, (a) of FIG. 10 is a top view of the entire plumbing member 1c according to this embodiment, and (b) of FIG. 10 is surrounded by a dotted line shown in (a) of FIG. FIG. 10 is a top view of an enlarged rectangular area;

Here, regarding the plumbing member 1c of the second embodiment, differences from the plumbing member 1 according to the first embodiment will be mainly described. The water-related member 1c differs from the water-related member 1 of the first embodiment in that each of the plurality of planar portions 20c does not have a projecting portion. Specifically, it is as follows.

The plumbing member 1c includes a joint 10c formed by a plurality of grooves, a plurality of planar portions 20c separated by the joint 10c, a floor member 60, and a drain port 2.

Also, the joint 10c is a joint formed by a plurality of grooves. The plurality of grooves include a plurality of first grooves 11c extending in a predetermined direction and a plurality of second grooves 12c extending in a direction different from the plurality of first grooves 11c. Also, the plurality of grooves includes a plurality of third grooves 13c extending in a direction different from that of the plurality of first grooves 11c and the plurality of second grooves 12c. In the present embodiment, each groove forming the three-forked path is formed by a plurality of first grooves 11c, a plurality of second grooves 12c, and a plurality of third grooves 13c. More specifically, the three-forked path is formed by one first groove 11c, one second groove 12c, and one third groove 13c. In addition, since the plurality of planar portions 20c are separated by the joints 10c (that is, the plurality of first grooves 11c, the plurality of second grooves 12c, and the plurality of third grooves 13c), the joints 10c are divided into the plurality of planar portions It is also a groove between 20c. Therefore, the shape of the joint 10c and the shape of the plurality of planar portions 20c are related to each other. That is, it can be said that the three-forked path of the present embodiment is formed by the plurality of first grooves 11c, the plurality of second grooves 12c, and the plurality of planar portions 20c.

Here, the detailed structure of the joint 10c and the plurality of planar portions 20c will be described with reference to FIG. 10(b).

The plurality of first grooves 11c are parallel to each other and arranged at regular intervals. Specifically, the plurality of first grooves 11c each extend in the x-axis direction and are arranged side by side along the y-axis direction.

The plurality of second grooves 12c are parallel to each other and arranged at regular intervals. Specifically, the plurality of second grooves 12c each extend in the y-axis direction and are arranged side by side along the x-axis direction. That is, the plurality of first grooves 11c and the plurality of second grooves 12c are orthogonal to each other.

The plurality of third grooves 13c are parallel to each other and arranged at regular intervals. Specifically, in the present embodiment, the angle formed by the direction in which the third groove 13c extends, the direction in which the plurality of first grooves 11c extend, and the direction in which the plurality of second grooves 12c extend is 45°. .

For example, the spacing between the plurality of first grooves 11c and the spacing between the plurality of second grooves 12c are different. Also, the spacing between the plurality of first grooves 11c and the spacing between the plurality of second grooves 12c may be the same, for example.

Next, the plurality of planar portions 20c will be described.

As described above, the plurality of first grooves 11c and the plurality of second grooves 12c according to the present embodiment are orthogonal to each other. is different from the arrangement interval of . Therefore, the top view shape of the plurality of planar portions 20c is substantially rectangular.

However, strictly speaking, the top view shape of the plurality of planar portions 20c is not rectangular. This is because there are a plurality of third grooves 13c in the present embodiment.

In the connection region 50c, each groove forming the three-forked path is formed by a plurality of first grooves 11c, a plurality of second grooves 12c, and a plurality of third grooves 13c. Therefore, the top view shape of the plurality of planar portions 20c is a substantially rectangular shape in which diagonal corners are cut off by one third groove 13c. In the present embodiment, of the four corners of the rectangle that is the top view shape of the plurality of planar portions 20c, the corner on the positive x-axis and negative y-axis side and the corner on the negative x-axis and positive y-axis side The corners are cut off by a plurality of third grooves 13c. With such a configuration, in the connection region 50c, the region where the water 80 is less susceptible to the surface tension of the groove side surface can be narrowed.

As described above, in the plumbing member 1c according to the present embodiment, the plurality of grooves includes the plurality of third grooves 13c extending in a direction different from the plurality of first grooves 11c and the plurality of second grooves 12c. Further, each groove forming the three-forked path is formed by a plurality of first grooves 11c, a plurality of second grooves 12c, and a plurality of third grooves 13c. Therefore, in the three-way intersection, it is possible to narrow the area where the water 80 is less susceptible to the surface tension of the groove side surfaces. As a result, the water 80 in the plurality of first grooves 11c, the plurality of second grooves 12c, and the plurality of third grooves 13c is less likely to be interrupted, and the plurality of first grooves 11c, the plurality of second grooves 12c, and the plurality of third grooves Water 80 in 13c is sufficiently drained. That is, the plumbing member 1c according to the present embodiment has excellent drainage performance.

(others)
As described above, the plumbing member and the bathroom member according to the present invention have been described based on the above embodiment, but the present invention is not limited to the above embodiment.

In the plumbing member 1 of Embodiment 1, the three grooves forming the three-forked path are the first groove 11, the second groove 12, and the groove between the two protrusions 21 facing each other. Constructed by and That is, the three-way intersection of Embodiment 1 is formed by a plurality of first grooves 11 , a plurality of second grooves 12 , and protrusions 21 . On the other hand, it can also be said that the groove between the two protrusions 21 facing each other is one of the plurality of third grooves. The plurality of third grooves described here are grooves extending in a direction different from that of the plurality of first grooves 11 and the plurality of second grooves 12 . Therefore, each groove that constitutes the three-forked path of Embodiment 1 may be formed by a plurality of first grooves 11, a plurality of second grooves 12, and a plurality of third grooves.

When the three internal angles of the inscribed triangle 56 are all 60°, the area 90 where the distance to the groove side surface is W/2 or more is minimized. Therefore, each of the three interior angles of the inscribed triangle 56 is preferably greater than 50° and less than 75°. More preferably, each of the three internal angles of the inscribed triangle 56 is greater than 54° and less than 63°. Moreover, each of the three interior angles of the inscribed triangle 56 is more preferably greater than 56° and less than 62°.

In Embodiment 1, an example of a method for determining the connection region 50, the connection center point 51, the circle 52 in contact with the end, the inscribed triangle 56, and the groove connection direction 55 is shown, but the present invention is not limited to this. . For example, the groove connection direction may be determined as follows. Also, the example method of determining the groove connection direction 55x shown here does not use the inscribed triangle 56, but uses a circle 53x of radius W and a line segment 54x.

FIG. 11 is a top view of the plumbing member for explaining another example of determining the groove connection direction 55x. Here, points different from the first embodiment will be mainly described.

First, the connection region 50x is the same region as the connection region 50 shown in the first embodiment. Also, the circle 52x in contact with the end portion is the same circle as the circle 52 in contact with the end portion shown in the first embodiment. As described above, the circle 52x that contacts the ends is a circle that contacts three ends.

In the example shown here, the connection center point 51x is the center point of a circle 52x that touches the edge. Therefore, the position of the connection center point 51x is determined by determining the position of the circle 52x in contact with the end. Moreover, the connection center point 51x is also the center point of a circle 53x with a radius W. As shown in FIG. That is, the connection center point 51x is equidistant from any point on the circumference of the circle 52x in contact with the end. Also, the connection center point 51x is equidistant from any point on the circumference of the circle 53x with the radius W. FIG.

A circle 53x having a radius W is a circle whose center is the connection center point 51x and whose radius is the length W of the groove width.

A line segment 54x is a line segment that connects the intersections of the circle 53x with a radius W and the ends of the planar portion 20 and the like, and further, is a line segment configured so as to straddle the three grooves that form the three-forked road. is. Also, in the example shown here, the line segment 54x includes a first line segment 541x, a second line segment 542x, and a third line segment 543x. That is, the first line segment 541x is a line segment across one first groove 11, the second line segment 542x is a line segment across one second groove 12, and the third line segment 543x is a line segment across one second groove 12. , is a line segment that straddles the groove between the two protrusions 21 facing each other.

The groove connection direction 55x is the direction in which each groove forming the three-forked path connects to the connection center point 51x in the connection region 50x. In the example shown here, groove connection direction 55x is the direction of a line from the midpoint of line segment 54x to connection center point 51x. Also, in the example shown here, the groove connection direction 55x includes a first groove connection direction 551x, a second groove connection direction 552x, and a third groove connection direction 553x. The first groove connection direction 551x is the direction of a line extending from the midpoint of the first line segment 541x to the connection center point 51x. The second groove connection direction 552x is the direction of a line extending from the midpoint of the second line segment 542x to the connection center point 51x. The third groove connection direction 553x is the direction of a line extending from the midpoint of the third line segment 543x to the connection center point 51x. The groove connection direction may be determined in this manner.

Further, for example, in the above embodiment, the inclination angle φ of the surface of the floor member 60 is 1.2° or less, but the inclination angle φ may be larger than 1.2°. For example, when the plumbing member 1 is used in a structure in which people are not likely to stand, even if the angle of inclination φ is greater than 1.2°, people do not feel uncomfortable when using it. Therefore, by making the angle of inclination φ larger than 1.2°, the drainage performance can be improved.

Note that the film member 40 may have an adhesive layer. For example, the adhesive layer may be formed on the surface of the substrate 41 opposite to the surface on which the resin layer 42 is provided. The adhesive layer is made of a material that bonds the film member 40 and the floor member 60 together. Thereby, the film member 40 can be attached to the surface of the floor member 60 .

Further, for example, the fine grooves 30 configured by the resin layer 42 may be provided directly on the upper surface of the floor member 60 having the joints 10 . In other words, the plumbing member 1 does not have to include the base material 41 . Furthermore, the fine grooves 30 formed by the floor member 60 may be provided directly on the upper surface of the floor member 60 having the joint 10 . In other words, the plumbing member 1 does not have to include the film member 40, the base material 41 and the resin layer 42.

In addition, there are also forms obtained by applying various modifications that a person skilled in the art can think of to the embodiments, and forms realized by arbitrarily combining the constituent elements and functions in the embodiments without departing from the spirit of the present invention. Included in the present invention.

1 Plumbing member 10 Joint 11 First groove 12 Second groove 13c Third groove 20 Planar portion 21 Protruding portion 30 Fine groove 31 Recessed portion 40 Film member 50 Connection region 51 Connection center point 55 Groove connection direction H Depth

Claims (9)

a joint composed of a plurality of grooves;
A plurality of planar parts separated by the joints,
The plurality of grooves are
a plurality of first grooves extending in a predetermined direction;
and a plurality of second grooves extending in a direction different from the plurality of first grooves,
The plurality of first grooves, the plurality of second grooves, and the plurality of planar portions form a three-forked path in a connection region where the plurality of first grooves and the plurality of second grooves are connected,
When the direction in which each groove that forms the three-forked path is connected to the connection center point in the connection area is defined as the groove connection direction,
an angle formed by each of the groove connection directions is greater than 90° and less than 180°;
Each of the plurality of planar portions has a protruding portion protruding toward the joint in the connection region,
The three-forked path is formed by the plurality of first grooves, the plurality of second grooves, and the projecting portion. Furthermore, the plurality of grooves includes a plurality of third grooves extending in a direction different from the plurality of first grooves and the plurality of second grooves,
2. The plumbing member according to claim 1, wherein each groove forming said three-forked path is formed by said plurality of first grooves, said plurality of second grooves, and said plurality of third grooves. The plumbing member according to claim 1 or 2 , wherein the three-way intersection forms a Y shape. The plumbing system member according to any one of claims 1 to 3 , wherein the angle is 120°. a joint composed of a plurality of grooves;
a plurality of planar portions separated by the joint; and a plurality of groove-shaped portions having at least one of width and depth on the order of micrometers, which are arranged in stripes on the surfaces of the joint and the plurality of planar portions. and a fine groove having a recess of
The plurality of grooves are
a plurality of first grooves extending in a predetermined direction;
and a plurality of second grooves extending in a direction different from the plurality of first grooves,
The plurality of first grooves, the plurality of second grooves, and the plurality of planar portions form a three-forked path in a connection region where the plurality of first grooves and the plurality of second grooves are connected,
When the direction in which each groove that forms the three-forked path is connected to the connection center point in the connection area is defined as the groove connection direction,
an angle formed by each of the groove connection directions is greater than 90° and less than 180°;
A water-related member, wherein the surface of the fine groove is hydrophilic. 6. The plumbing member according to claim 5 , wherein the extending direction of the plurality of recesses and the connecting direction of each of the grooves are not parallel. 7. The plumbing member according to claim 5 , wherein the plurality of recesses have a width of 10 μm or more and 300 μm or less and a depth of 5 μm or more and 150 μm or less. Further comprising a film member located on the surface of the joint and the plurality of planar portions,
The plumbing member according to any one of claims 5 to 7 , wherein the fine grooves are provided on the surface of the film member. A bathroom member comprising the plumbing member according to any one of claims 1 to 8 .

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