JP7432168B1 - washing area floor - Google Patents

Abstract

[Problem] To provide an easy-to-use washing area floor. The present invention includes an upper part and a drain groove recessed downward from the upper part, the drain groove has a downward slope part that is a downward slope part in a drainage slope, and the downward slope part is a downward slope part. , has an inclination angle that is larger than 0 degrees with the horizontal line, and the sum of the inclination angle and the contact angle of the water drop with the tangent at the downward slope is 90 degrees or more. The washing area floor is characterized by: [Selection diagram] Figure 4

Description

Aspects of the present invention generally relate to washroom floors.

A washing area floor is known that is provided with a drain groove that guides hot water toward a drain port (Patent Document 1).

Japanese Patent Application Publication No. 2009-144412

The washroom floor has a drainage slope across the entire floor toward the drain to ensure drainage performance to the drain. The slope of the drain groove located on the drain side causes hot water to flow to the opposite side of the drain due to its slope. In such a case, the slope of the slope becomes close to horizontal due to the drainage slope, which may make it difficult for hot water to flow to the bottom of the drain.

The present invention was made based on the recognition of this problem, and an object of the present invention is to provide a washing area floor that is easy to use.

A first invention is a washing area floor having a drainage slope, comprising an upper part and a drainage groove recessed downward from the upper part, and the drainage groove is an inclined part located at a lower part of the drainage slope. It has a downward slope part and an upward slope part which is a slope part located above the downward slope part, and the downward slope part has an angle of inclination larger than 0 degrees with the horizontal line. The washing area floor is characterized in that the sum of the inclination angle and the contact angle of water droplets with respect to the tangent at the downwardly inclined portion is 90 degrees or more.

According to this washing area floor, even if the washing area floor has a drainage slope and the hydrophilic performance of the washing area floor is not high, it makes good use of its water repellency and makes it easy to collect water droplets attached to the downward slope at the bottom of the drain. can do.

A second invention is based on the first invention, wherein the drain groove has a total value of the inclination angle and the contact angle of the oil droplet made of oleic acid with respect to the tangent at the downward slope part, which is smaller than 90 degrees. This is a washing area floor that is characterized by:

When sebum stains (oil droplets) from the human body adhere to the bottom of a drain, they accumulate at the bottom and are difficult to remove with water flowing into the bottom of the drain. Therefore, it is preferable that sebum stains (oil droplets) from the human body are flushed to the bottom of the drain along with water.
According to this washing area floor, sebum stains from the human body can be discharged together with water to the drain port through the bottom of the drain channel.

A third invention is a washing area floor having a drainage slope, comprising an upper part and a drainage groove recessed downward from the upper part, and the drainage groove is an inclined part located at the lower part of the drainage slope. It has a downward slope part and an upward slope part which is a slope part located above the downward slope part, and the downward slope part has an angle of inclination larger than 0 degrees with the horizontal line. , and the sum of the angle of inclination and the contact angle of water droplets on the downwardly inclined portion is 90 degrees or more.

According to this washing area floor, even if the washing area floor has a drainage slope and the hydrophilic performance of the washing area floor is not high, it makes good use of its water repellency and makes it easy to collect water droplets attached to the downward slope at the bottom of the drain. can do.

A fourth invention is based on the third invention, wherein the downwardly inclined portion has a sum of the inclination angle and the contact angle of the oil droplet made of oleic acid on the downwardly inclined portion, which is smaller than 90 degrees. There is a wash floor.

When sebum stains (oil droplets) from the human body adhere to the bottom of a drain, they accumulate at the bottom and are difficult to remove with water flowing into the bottom of the drain. Therefore, it is preferable that sebum stains (oil droplets) from the human body are flushed to the bottom of the drain along with water.
According to this washing area floor, sebum stains from the human body can be discharged together with water to the drain port through the bottom of the drain channel.

According to the aspect of the present invention, it is possible to provide a washing area floor that is easy to use.

FIG. 1 is a perspective view showing a bathroom unit including a washing area floor according to a first embodiment. FIG. 3 is a plan view of the washing area floor seen from above. 3 is a cross-sectional view of the washing area floor viewed from the direction of arrow AA in FIG. 2. FIG. It is an explanatory view when a water droplet adheres to the 1st part of a downward slope part. It is an explanatory view when a water droplet adheres to the second part of a downward slope part. It is an explanatory view when an oil droplet adheres to the 1st part of a downward slope part. It is an explanatory view when an oil droplet adheres to the second part of a downward slope part. FIG. 4 is a sectional view similar to FIG. 3 showing a washing area floor according to a second embodiment. It is an explanatory view when a water droplet adheres to a downward slope part. It is an explanatory view when an oil droplet adheres to a downward slope part.

Hereinafter, embodiments will be described with reference to the drawings. Note that in each drawing, similar components are denoted by the same reference numerals, and detailed explanations are omitted as appropriate.
FIG. 1 is a perspective view showing a bathroom unit equipped with a washing area floor according to a first embodiment.
As shown in FIG. 1, the bathroom unit 1 includes a washing area floor 10, a bathtub 90, and wall panels 96a to 96f.

A washing area floor 10 is installed in a space next to the bathtub 90. The surface 10a of the washing area floor 10 has waterproof properties that prevent water from leaking outside the bathroom. Note that in the present specification, the term "water" includes not only cold water but also heated hot water.

On the back side (lower side) of the washing area floor 10, a drainage pipe 92 is provided near the boundary with the bathtub 90. In the washing area floor 10, for example, a drainage port 10h communicating with a drainage pipe 92 is formed near the boundary with the bathtub 90. The portion where the drain port 10h is provided is depressed downward, and the surface 10a of the washing area floor 10 is provided with a drainage slope that slopes downward toward the drain port 10h. Further, a drain port (not shown) provided at the bottom of the bathtub 90 is also connected to the drain pipe 92. The angle of inclination of the drainage slope with respect to the horizontal is, for example, 1.1 degrees.

A bath apron 94 is provided at the boundary between the bathtub 90 and the washing area floor 10 to cover the side surface of the bathtub 90 on the washing area floor 10 side. Note that depending on the structure of the bathtub 90, the bath apron 94 may not be provided.

As shown by the two-dot chain line in FIG. 1, wall panels 96a to 96c are installed on the rim of the bathtub 90. Additionally, wall panels 96d to 96f are installed on the peripheral edge of the washing area floor 10. Further, a door is attached to the wall panel 96f via a door attachment frame (not shown).

FIG. 2 is a plan view of the washing area floor seen from above.
FIG. 3 is a sectional view of the washing area floor viewed from the direction of arrow AA in FIG.
The surface 10a of the washing area floor 10 is formed in an uneven shape. In addition, in FIG. 2, for convenience of explanation, the unevenness formed on the surface 10a of the washing area floor 10 is omitted. As shown by arrows in FIG. 2, the surface 10a of the washing area floor 10 has a drainage slope formed toward the drainage port 10h. Thereby, water adhering to the surface 10a of the washing area floor 10 flows to the drain port 10h.

As shown in FIG. 3, the washing area floor 10 includes an upper part 20 and a drainage groove 30 recessed downward from the upper part 20. The washing area floor 10 shown in FIG. 3 is provided with a drain port 10h on the left side of the page, and a wall panel 96e on the right side of the page. Therefore, in the washing area floor 10 shown in FIG. 3, a drainage slope is formed from the right side to the left side in the drawing. The upper part 20 is the highest position between the adjacent drain grooves 30.

On the surface 10a of the washing area floor 10, for example, a grid-like drain groove is formed. The drain 30 shown in FIG. 3 extends, for example, in a direction parallel to the bathtub 90. The water flowing into the drain 30 is guided to the drain 10h via a drain (not shown) connected to the drain 10h.

The drainage ditch 30 has a downwardly inclined part 40 and an upwardly inclined part 50. The downward slope portion 40 and the upward slope portion 50 face each other. The downward slope part 40 is a slope part located below in the drainage slope. That is, the downwardly inclined portion 40 is the inclined portion of the drain groove 30 that is closer to the drain port 10h. The upper inclined part 50 is an inclined part located above the lower inclined part 40. That is, the upwardly inclined portion 50 is an inclined portion that is further away from the drain port 10h than the downwardly inclined portion 40 is. In this example, the downwardly inclined portion 40 and the upwardly inclined portion 50 are formed into a gently curved shape and are connected at the bottom 31 of the drainage groove 30 . Note that the bottom 31 of the drain 30 refers to the lowest position of the drain 30 when the washing area floor 10 is installed horizontally, for example.

Water on the upper slope 50 flows toward the bottom 31 due to the slope of the upper slope 50 and the drainage slope. On the other hand, the slope of the downward slope portion 40 approaches a horizontal state due to the drainage slope. Therefore, water on the downwardly inclined portion 40 may become difficult to flow toward the bottom portion 31. In such a case, it is conceivable to increase the hydrophilicity of the surface 10a of the washing area floor 10 so that water can easily flow to the bottom 31. However, if the hydrophilicity is increased, the surface 10a of the washing area floor 10 may become slippery, which may make the washing area floor 10 less convenient to use.

Therefore, the washing area floor 10 is designed so that the water droplets W and oil droplets O adhering to the downwardly inclined part 40 can easily flow toward the bottom part 31 without making the hydrophilicity higher than necessary. The oil droplets O are made of oleic acid, for example, and correspond to sebum stains washed away from the body of a bathroom user. Below, the downwardly inclined portion 40 will be specifically explained with reference to FIGS. 3 to 7.

As shown in FIG. 3, the first portion 41 is located at an arbitrary position on the downwardly inclined portion 40. As shown in FIG. That is, the first part 41 is an arbitrary part between the upper part 20 and the bottom part 31. The first portion 41 has a first point 41a. The first point 41a is the tip position of the 2 mL water droplet W on the bottom 31 side and the tip position of the 2 mL oil drop O on the bottom 31 side, which is attached to the first region 41.

Further, the second portion 42 is located at an arbitrary position on the downwardly inclined portion 40. That is, the second portion 42 is an arbitrary portion between the upper portion 20 and the bottom portion 31. The second portion 42 has a second point 42a. The second point 42a is the tip position of the 2 mL water droplet W on the bottom 31 side and the tip position of the 2 mL oil drop O on the bottom side, which are attached to the second portion 42. Note that the first portion 41 and the second portion 42 may be at the same position or may be at different positions. In this example, the first portion 41 and the second portion 42 are located at different positions.

The downwardly inclined portion 40 has at least one of a first portion 41 and a second portion 42 between the upper portion 20 and the bottom portion 31 . The first portion 41 and the second portion 42 will be explained below.

In the embodiment, the inclination angle of the downwardly inclined portion 40 is defined as the angle formed by a horizontal line and an imaginary line connecting the bottom 31 of the drainage ditch 30 and the first point 41a of the downwardly inclined portion 40 located above the bottom 31. For example, it may be defined as an angle between a tangent to the second point 42a of the downwardly inclined portion 40 located above the bottom portion 31 and a horizontal line.

FIG. 4 is an explanatory diagram when water droplets adhere to the first portion of the downwardly inclined portion.
As shown in FIG. 4, the imaginary line BB is a line connecting the bottom 31 of the drainage ditch 30 and the first point 41a of the downwardly inclined portion 40 located above the bottom 31. The first point 41a may be, for example, a midpoint between the bottom portion 31 and the highest point of the upper portion 20 (a point at which the distance is 1/2) in the horizontal direction. Further, the first point 41a is not limited to the intermediate point, but may be a point at 1/3 of the distance, a point at 1/4 of the distance, a point at 1/6 of the distance, or any point. good. The virtual line BB has a first inclination angle θ1 that is larger than 0 degrees with the horizontal line CC. In this case, the sum of the first inclination angle θ1 and the contact angle θ2 of the water droplet W with respect to the tangent line DD at the first point 41a is 90 degrees or more. Thereby, even if the downward slope part 40 has a drainage slope, the water droplets W adhering to the first part 41 can be efficiently flowed toward the bottom part 31.

FIG. 5 is an explanatory diagram when water droplets adhere to the second portion of the downwardly inclined portion.
As shown in FIG. 5, the tangent line EE of the second point 42a of the downwardly inclined part 40 located above the bottom part 31 has a second inclination angle θ3 larger than 0 degrees with the horizontal line CC. have. In this case, the sum of the second inclination angle θ3 and the contact angle θ4 of the water droplet W with respect to the tangent line EE at the second point 42a is 90 degrees or more. Thereby, even if the downward slope part 40 has a drainage slope, the water droplets W adhering to the second portion 42 can be efficiently flowed toward the bottom part 31.

The downward slope portion 40 has at least one of a first portion 41 and a second portion 42 . As a result, even if the washing area floor 10 has a drainage slope and the hydrophilic performance of the washing area floor 10 is not high, the water droplets W adhering to the downward slope part 40 can be effectively utilized to transfer water droplets W attached to the downward slope part 40 to the bottom part 30 of the drain groove 30. can be made easier to collect.

In addition to the conditions when water droplets W are attached to the first portion 41 and the second portion 42, the condition is provided when oil droplets O made of oleic acid are attached to the first portion 41 and the second portion 42. Good too. Hereinafter, a case where oil droplets O adhere to the first portion 41 and the second portion 42 will be described.

FIG. 6 is an explanatory diagram when oil droplets adhere to the first portion of the downwardly inclined portion.
As shown in FIG. 6, the oil droplet O has a lower apex than the water droplet W. That is, the wettability of the oil droplet O is greater than the wettability of the water droplet W. In the first portion 41, the sum of the first inclination angle θ1 and the contact angle θ5 of the oil droplet O made of oleic acid with respect to the tangent line DD at the first point 41a is smaller than 90 degrees. There is. As a result, the oil droplet O attached to the first portion 41 is suppressed from flowing toward the bottom 31 more than the water droplet W.

FIG. 7 is an explanatory diagram when oil droplets adhere to the second portion of the downwardly inclined portion.
As shown in FIG. 7, in the second portion 42, the sum of the second inclination angle θ3 and the contact angle θ6 of the oil droplet O made of oleic acid with respect to the tangent EE at the second point 42a is 90 degrees. It is smaller than. As a result, the oil droplet O adhering to the second portion 42 is suppressed from flowing toward the bottom 31 more than the water droplet W.

If human body sebum stains get into the drain 30, they may become difficult to remove. Therefore, the surface 10a of the washing area floor 10 preferably has hydrophilicity and oil repellency. Since the surface 10a of the washing area floor 10 has hydrophilicity, water spreads easily and the surface 10a dries easily. Moreover, since the surface 10a of the washing area floor 10 has oil repellency, the sebum stains from the human body can be discharged together with water.

However, if the hydrophilicity is increased, the surface 10a of the washing area floor 10 may become slippery, which may make the washing area floor 10 less convenient to use. Therefore, by having at least one of the first portion 41 and the second portion 42 in the downwardly inclined portion 40 of the washing area floor 10, water can be efficiently discharged without making the hydrophilic property unnecessarily high. can. Furthermore, sebum stains can be easily discharged together with water. As a result, the washing area floor 10 can be made easy to use.

Next, a washing area floor according to a second embodiment of the present invention will be described with reference to FIGS. 8 to 10. The washing area floor 60 according to the second embodiment has a straight downward slope part 83. Note that, in the second embodiment, the same components as those in the first embodiment are given the same reference numerals, and the explanation thereof will be omitted.

FIG. 8 is a sectional view similar to FIG. 3 showing a washing area floor according to the second embodiment.
The washing area floor 60 includes an upper part 70 and a drain groove 80 recessed downward from the upper part 70. The upper portion 70 is the highest position between the adjacent drain grooves 80. The washing area floor 60 shown in FIG. 8 is provided with a drain port 10h on the left side of the page, and a wall panel 96e on the right side of the page. Therefore, in the washing area floor 60 shown in FIG. 8, a drainage slope is formed from the right side to the left side in the drawing. The drain 80 has a downwardly inclined portion 83 and an upwardly inclined portion 85 . The downward slope portion 83 and the upward slope portion 85 are sloped in a straight line from the top portion 70 toward the bottom portion 81 .

FIG. 9 is an explanatory diagram when water droplets adhere to the downwardly inclined portion. FIG. 9 shows a case where, for example, a 2 mL water droplet W adheres to the downwardly inclined portion 83.
As shown in FIG. 9, the downward slope portion 83 has a third slope angle θ7 that is larger than 0 degrees with the horizontal line CC. The total value of the third inclination angle θ7 and the contact angle θ8 of the water droplet W on the downwardly inclined portion 83 is 90 degrees or more. Thereby, even if the downward slope part 83 has a drainage slope, it is possible to efficiently flow the water droplets W toward the bottom part 81.

Therefore, even if the washing area floor 60 having a drainage slope does not have a high hydrophilic property, it makes good use of its water repellency and makes it easy to collect water droplets W adhering to the downward slope part 83 to the bottom part 81 of the drain groove 80. can do.

In addition to the case where a 2 mL water droplet W adheres to the downwardly inclined part 83, the condition may be such that a 2 mL oil droplet O made of oleic acid adheres to the downwardly inclined part 83.

FIG. 10 is an explanatory diagram when oil droplets adhere to the downwardly inclined portion.
As shown in FIG. 10, the downwardly inclined portion 83 has a structure in which the sum of the third inclination angle θ7 and the contact angle θ9 of the oil droplet O made of oleic acid on the downwardly inclined portion 83 is smaller than 90 degrees. There is. As a result, the oil droplet O adhering to the downwardly inclined portion 83 is suppressed from flowing toward the bottom portion 81 more than the water droplet W.

The washing area floor 60 according to the second embodiment also has the same functions and effects as the washing area floor 10 according to the first embodiment. By having the downwardly sloping portion 83, the washing area floor 60 can efficiently drain water without increasing the hydrophilicity more than necessary. Furthermore, sebum stains can be easily discharged together with water. As a result, the washing area floor 60 can be made easy to use.

Embodiments may include the following configurations.
(Configuration 1)
A washing area floor having a drainage slope,
The upper part and
a drain groove recessed downward from the top;
Equipped with
The drainage ditch is
a downward slope part which is a slope part located downward in the drainage slope;
an upwardly sloped portion that is a sloped portion located above the downwardly sloped portion;
has
The downward slope part has an angle of inclination larger than 0 degrees with the horizontal line,
A washing area floor characterized in that the sum of the angle of inclination and the contact angle of water droplets with respect to the tangent at the downwardly inclined portion is 90 degrees or more.
(Configuration 2)
The washing area floor according to configuration 1, wherein the drain groove has a total value of the inclination angle and the contact angle of the oil droplet made of oleic acid with respect to the tangent in the downwardly inclined part, which is less than 90 degrees. .
(Configuration 3)
A washing area floor having a drainage slope,
The upper part and
a drain groove recessed downward from the top;
Equipped with
The drainage ditch is
a downward slope part which is a slope part located downward in the drainage slope;
an upwardly sloped portion that is a sloped portion located above the downwardly sloped portion;
has
The downward sloping portion is
It has an inclination angle that is larger than 0 degrees with the horizontal line, and the sum of the inclination angle and the contact angle of the water droplet on the downward slope is 90 degrees or more. Washing area floor.
(Configuration 4)
The downward sloping portion is
The washing area floor according to configuration 3, wherein the sum of the inclination angle and the contact angle of the oil droplets made of oleic acid on the downwardly inclined part is smaller than 90 degrees.

The embodiments of the present invention have been described above. However, the invention is not limited to these descriptions. Appropriate design changes made by those skilled in the art with respect to the above-described embodiments are also included within the scope of the present invention as long as they have the characteristics of the present invention. For example, the shape, size, material, arrangement, etc. of each element included in the washing area floor etc. are not limited to those illustrated and can be changed as appropriate. Furthermore, the elements of each of the embodiments described above can be combined to the extent technically possible, and combinations of these are also included within the scope of the present invention as long as they include the features of the present invention.

1 Bathroom unit 10 Washing area floor 10a Surface 10h Drain port 20 Top 30 Drain groove 31 Bottom 40 Downward slope 41 1st part 41a 1st point 42 2nd part 42a 2nd point 50 Upward slope 60 Washing area floor 70 Upper part 80 Drain 81 Bottom 83 Downward slope 85 Upward slope 90 Bathtub 92 Drainage pipe 94 Bath apron 96a-96f Wall panel O Oil drop W Water drop

Claims (2)

A washing area floor having a drainage slope,
The upper part and
a drain groove recessed downward from the top;
Equipped with
The drainage ditch is
a downward slope part which is a slope part located downward in the drainage slope;
an upwardly sloped portion that is a sloped portion located above the downwardly sloped portion;
has
The downward slope part has an angle of inclination larger than 0 degrees with the horizontal line,
The total value of the inclination angle and the contact angle of the water droplet with respect to the tangent at the downwardly inclined portion is configured to be 90 degrees or more ,
The washing area floor, wherein the drain groove has a total value of the inclination angle and the contact angle of the oil droplets made of oleic acid with respect to the tangent at the downwardly inclined portion, which is smaller than 90 degrees . A washing area floor having a drainage slope,
The upper part and
a drain groove recessed downward from the top;
Equipped with
The drainage ditch is
a downward slope part which is a slope part located downward in the drainage slope;
an upwardly sloped portion that is a sloped portion located above the downwardly sloped portion;
has
The downward sloping portion is
It has an inclination angle that is larger than 0 degrees with the horizontal line, and the sum of the inclination angle and the contact angle of the water droplet on the downward slope is 90 degrees or more. ,
The downward sloping portion is
A washing area floor characterized in that the sum of the inclination angle and the contact angle of oil droplets made of oleic acid on the downwardly inclined part is smaller than 90 degrees .

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