Wash basin and wash stand

Abstract

To smoothly discharge dirt into an exhaust hole.SOLUTION: In a wash basin 12 including a bottom part 31 and a lateral face part 32 surrounding the bottom part 31, the bottom part 31 includes: an exhaust hole 43; a bottom surface 41 extending from the lateral face part 32 toward the exhaust hole 43 in the front-back direction; and a groove surface 42 that is connected to the bottom surface 41 in the front-back direction, is lower than the bottom surface 41, extends in a left-right direction orthogonal to the front-back direction with regard to the exhaust hole 43, and is inclined downward toward the exhaust hole 43. The groove surface 42 has a width C1 in the left-right direction at a first position that is narrower than a width C2 at a second position that is farther away from the exhaust hole 43 than the first position in the left-right direction.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to washbasins and sinks. [Background technology]

[0002] Patent Document 1 discloses a washbasin in which water is drained through a drain outlet. Patent Document 1 describes that a flat portion is provided on the front side of the bottom of the bowl, and a groove is provided on the back side, and that water discharged onto the flat portion flows from the flat portion to the groove, and then from the groove to the drain outlet. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-143141 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the structure of Patent Document 1, for example, water flowing through the groove from the right toward the drain outlet and water flowing through the groove from the left toward the drain outlet may collide between the drain outlet and the side surface at the back, which may cause dirt to adhere to the side surface at the back. In a washbasin, it is required that dirt be smoothly flushed down the drain outlet to maintain cleanliness.

[0005] In view of the above problems, the present disclosure aims to provide a washbasin and washstand that can smoothly flush dirt down the drain. [Means for solving the problem]

[0006] In order to solve the above problem, a washbasin according to a first aspect of the present disclosure is a washbasin including a bottom and side portions surrounding the bottom, wherein the bottom has a drain outlet, a bottom surface extending in a first direction from the side portions toward the drain outlet, and a groove surface that is connected to the bottom surface in the first direction and is lower than the bottom surface, extends in a second direction perpendicular to the first direction relative to the drain outlet, and slopes downward toward the drain outlet, and the width of the groove surface at a first position in the second direction is narrower than the width of a second position in the second direction that is farther from the drain outlet than the first position.

[0007] According to this configuration, the groove surface has a tapered shape that is narrower at the second position farther in the second direction than at the first position, thereby increasing the amount of water that flows directly into the drain outlet. In other words, the amount of water that splashes before entering the drain outlet is reduced. Furthermore, the tapered shape reduces the speed at which the water flows before entering the drain outlet, reducing the energy of collisions between water droplets and reducing water splashing. This reduces the scattering of dirt, allowing it to flow smoothly into the drain outlet.

[0008] In addition, in the washbasin according to the second aspect of the present disclosure, the groove surface has a shape that becomes wider the farther it is from the drain outlet in the second direction.

[0009] According to this configuration, the groove surface has a shape (tapered shape) that becomes wider the further it is from the drain outlet, which prevents dirt from scattering and allows the dirt to be smoothly flushed down the drain outlet.

[0010] In addition, in a washbasin according to a third aspect of the present disclosure, the boundary of the groove surface relative to the bottom surface is linear, and the width of the linear boundary in the first direction becomes wider the further away from the drain outlet.

[0011] According to this configuration, the tapered shape is linear, which suppresses scattering of dirt and allows the dirt to flow smoothly into the drain outlet.

[0012] In addition, in a washbasin according to the fourth aspect of the present disclosure, the drain outlet is located within the area of ​​the groove surface, and the boundary between the groove surface and the bottom surface has an arc shape centered on the center point of the drain outlet in a planar view, and the width of the groove surface at the first position is narrower than the width at the second position on the side portion side in the second direction than the arc shape.

[0013] With this configuration, the boundary between the groove surface around the drain outlet and the bottom surface is arc-shaped, making it difficult to see the drain outlet due to the difference in height between the bottom surface and the groove surface.In addition, the area of ​​the bottom surface can be secured, allowing for a large working space.

[0014] Furthermore, in a washbasin according to a fifth aspect of the present disclosure, the groove surface has a shape in which the drain outlet is located on an extension of the boundary of the linear shape in a plan view.

[0015] This configuration allows dirt to be smoothly flushed down the drain, and also ensures a large bottom surface area, allowing for a large working space.

[0016] In addition, in the washbasin according to the sixth aspect of the present disclosure, the boundary position between the bottom surface and the groove surface in the first direction does not exceed the center position of the drain outlet in the first direction.

[0017] This configuration increases the amount of water that flows directly into the drain, allowing dirt to be washed away smoothly into the drain.

[0018] In addition, in a washbasin according to the seventh aspect of the present disclosure, the bottom is rectangular, and the angle of the boundary of the linear shape relative to the second direction is greater than 0 degrees and is less than the angle formed by a line connecting the center of the drain outlet and the corner of the bottom relative to the second direction.

[0019] This configuration allows dirt to be smoothly flushed down the drain, and also ensures a large bottom surface area, allowing for a large working space.

[0020] In addition, in a washbasin according to the eighth aspect of the present disclosure, the groove surface contacts the side portion in the first direction, and the side portion has a convex portion that protrudes in the first direction between the side portion and the drain outlet.

[0021] This configuration reduces the energy of water collisions on the groove surface between the drain outlet and the side surface, thereby reducing water splashing, which in turn reduces dirt splashing and allows the dirt to be smoothly flushed down the drain outlet.

[0022] In addition, in the washbasin according to the ninth aspect of the present disclosure, the convex portion has a shape in which, when viewed in a plane, the width in the first direction is greatest at the position of the drain outlet in the second direction, and the width in the first direction decreases toward the second direction.

[0023] This configuration effectively prevents water from scattering, that is, prevents dirt from scattering.

[0024] Furthermore, a washbasin according to a tenth aspect of the present disclosure includes the above washbasin and a faucet that discharges water onto the bottom surface of the washbasin.

[0025] This configuration allows for the construction of a washbasin that allows dirt to be smoothly flushed down the drain. [Effects of the Invention]

[0026] The washbasin and sink according to the present disclosure allow dirt to be smoothly flushed down the drain. [Brief explanation of the drawings]

[0027] [Figure 1] 1 is a perspective view showing an example of the overall configuration of a bathroom vanity according to a first embodiment of the present disclosure. [Figure 2] FIG. 2 is a perspective view showing an example of the configuration of the washbasin in FIG. 1. [Figure 3] FIG. 2 is a plan view showing an example of the configuration of the washbasin in FIG. [Figure 4] 4 is a cross-sectional view of the washbasin of FIG. 3 taken along line IV-IV. [Figure 5] FIG. 4 is a cross-sectional view of the VV surface of the washbasin of FIG. 3. [Figure 6] 6 is a cross-sectional view of the washbasin of FIG. 3 taken along line VI-VI. [Figure 7] 7 is a cross-sectional view of the washbasin of FIG. 3 taken along line VII-VII. [Figure 8] 8 is a cross-sectional view of the washbasin of FIG. 3 taken along line VIII-VIII. [Figure 9] FIG. 10 is a plan view showing an example of the configuration of a reference washbasin, which is a washbasin of a reference example. [Figure 10] FIG. 10 is a perspective view showing a configuration example of the reference washbasin of FIG. 9. [Figure 11] FIG. 4 is a plan view showing the flow of water in the washbasin of FIG. 3. [Figure 12] FIG. 10 is a plan view showing an example of the configuration of a washbasin according to a second embodiment. [Figure 13] FIG. 13 is a perspective view showing a configuration example of the washbasin in FIG. 12. DETAILED DESCRIPTION OF THE INVENTION

[0028] Hereinafter, each embodiment of the present disclosure will be described with reference to the accompanying drawings. To facilitate understanding of the description, the same components in each drawing will be denoted by the same reference numerals as much as possible, and duplicate descriptions will be omitted.

[0029] ---First embodiment--- First, the first embodiment will be described.

[0030] <Overall structure> Fig. 1 is a perspective view schematically illustrating an example of the overall configuration of a bathroom vanity 1 according to a first embodiment of the present disclosure. As shown in Fig. 1, the bathroom vanity 1 includes a mirror cabinet 2 and a washbasin 3. The bathroom vanity 1 is installed by being fixed to, for example, a floor or a wall.

[0031] 1, the left-right direction, the up-down direction, and the front-rear direction are set relative to a user standing in front of the bathroom vanity 1. In this embodiment, the first direction is the front-rear direction, and the second direction is the left-right direction.

[0032] The mirror cabinet 2 is provided at the back (wall side) above the washbasin 3. A plurality of mirrors 4 are provided at the front side of the mirror cabinet 2. The mirrors 4 can be opened and closed, and a user can access the mirror cabinet 2 by opening the mirrors 4.

[0033] The washstand 3 is provided below the mirror cabinet 2. The washstand 3 includes a faucet 10, a cabinet 11, and a washbasin 12.

[0034] The faucet 10 is located at the bottom end of the mirror cabinet 2, in the center in the left-right direction. The location and shape of the faucet 10 are not limited. Water is supplied to the faucet 10 from a pipe located, for example, at the back of the cabinet 11, and the faucet 10 discharges water toward the washbasin 12. The faucet 10 discharges water toward (toward) the bottom surface 41, which will be described later.

[0035] Cabinet 11 is disposed below bathroom vanity 1. Cabinet 11 has multiple drawers for storage. For example, at the back of cabinet 11, drainage pipes, pipes for supplying water to faucet 10, electrical systems, etc. are disposed.

[0036] The washbasin 12 is provided above the cabinet 11. In other words, the washbasin 12 is supported by the cabinet 11. Figure 2 is a perspective view showing an example configuration of the washbasin 12. The washbasin 12 comprises a rim portion 21 and a bowl portion 22. The bowl portion 22 and the rim portion 21 are integrally molded from the same material. For example, the material is ceramic, resin, or the like.

[0037] The edge portion 21 is disposed around the bowl portion 22. For example, the right and left sides of the edge portion 21 have the same shape. For example, the width of the front side of the edge portion 21 is narrower than the widths of the right and left sides. The upper surface of the edge portion 21 has a flat shape, and the entire edge portion 21 is flat.

[0038] Bowl portion 22 is located in the center in the left-right direction of washbasin 12. Bowl portion 22 has a shape that is recessed downward from the upper surface of rim portion 21. Bowl portion 22 has a bottom portion 31 and a side portion 32.

[0039] Bottom portion 31 is the lowest surface of bowl portion 22, and bowl portion 22 is formed by bottom portion 31 being surrounded by side portion 32. Figure 3 is a plan view showing an example configuration of washbasin 12. Bottom portion 31 is rectangular. Side portion 32 includes a rear side portion 32a connected to the rear end of bottom portion 31, a front side portion 32b connected to the front end of bottom portion 31, a left side portion 32c connected to the left end of bottom portion 31, and a right side portion 32d connected to the right end of bottom portion 31. Rear side portion 32a, front side portion 32b, left side portion 32c, and right side portion 32d are each a wall surface extending upward from bottom portion 31. The front and rear ends of the bottom 31 each have a linear shape extending in the left-right direction, and the left and right ends each have a linear shape extending in the front-to-rear direction. The rear side surface 32a, the front side surface 32b, the left side surface 32c, and the right side surface 32d each have a curved bottom and are connected to the respective ends of the bottom 31. The rear side surface 32a and the left side surface 32c, the left side surface 32c and the front side surface 32b, the front side surface 32b and the right side surface 32d, and the right side surface 32d and the rear side surface 32a are each connected by a curved shape. In this way, the bottom 31 and the side surface portions 32 form a bowl shape.

[0040] The bottom portion 31 includes a bottom surface 41, a groove surface 42, and a drainage hole 43. In Fig. 3, the bottom surface 41 is indicated by a plurality of dots, and the groove surface 42 is indicated by parallel oblique lines.

[0041] The bottom surface 41 extends in both the left-right direction and the front-rear direction. That is, the bottom surface 41 extends in the front-rear direction from the side surface portion 32 toward the drain outlet 43. The bottom surface 41 then spreads out to and is connected to the front side surface portion 32b, the left side surface portion 32c, and the right side surface portion 32d. The rear side of the bottom surface 41 is connected to the groove surface 42.

[0042] FIG. 4 is a cross-sectional view taken along plane IV-IV in FIG. 3. FIG. 5 is a cross-sectional view taken along plane VV in FIG. 3. FIG. 6 is a cross-sectional view taken along plane VI-VI in FIG. 3. In plane IV-IV where the drain outlet 43 is located as shown in FIG. 4, and in planes where the drain outlet 43 is not located as shown in FIGS. 5 and 6, the bottom surface 41 slopes downward toward the groove surface 42. Specifically, the bottom surface 41 slopes downward from the front to the back. As shown in FIGS. 4, 5, and 6, the sloped surface of the bottom surface 41 is positioned higher than the groove surface 42. FIG. 7 is a cross-sectional view taken along plane VII-VII in FIG. 3. As shown in FIG. 7, the bottom surface 41 is not sloped in the left-right direction. Therefore, water discharged onto the bottom surface 41 flows along the slope from the front to the back and into the groove surface 42. The left-right slope of the bottom surface 41 is not limited to the above, and may be sloped.

[0043] Returning to FIG. 3 , the groove surface 42 extends in the left-right direction. That is, the groove surface 42 extends in the left-right direction relative to the drain outlet 43. The groove surface 42 is connected to the rear side surface portion 32a on the rear side, the left side surface portion 32c on the left side, and the right side surface portion 32d on the right side. That is, the groove surface 42 is in contact with the rear side surface portion 32a of the side surface portion 32 in the front-rear direction. The front side of the groove surface 42 is connected to the bottom surface 41 in the front-rear direction. The width of the groove surface 42 in the left-right direction is equal to the width of the bottom surface 41 in the left-right direction. Note that the width of the groove surface 42 and the width of the bottom surface 41 may be configured to be different.

[0044] 5 and 6, the groove surface 42 has a groove shape that is lower in height than the bottom surface 41. That is, the groove surface 42 has a shape that is recessed downward from the bottom surface 41. For example, the groove surface 42 has a shape that is curved downward in a cross section perpendicular to the left-right direction.

[0045] 8 is a cross-sectional view of plane VIII-VIII in FIG. 3. That is, FIG. 8 is a view showing a cross section of groove surface 42. As shown in FIG. 8, groove surface 42 has a shape that slopes downward from the left and right ends toward center C of bowl portion 22. That is, groove surface 42 has a shape that is lowest at center C. Drain outlet 43 is located at the position of center C. Therefore, groove surface 42 has a shape that slopes downward toward drain outlet 43.

[0046] Returning to Figure 3, drain outlet 43 is a circular hole that penetrates bowl portion 22 downward. Drain outlet 43 discharges water from washbasin 12 to the outside. Drain outlet 43 is connected to a drain pipe. As shown in Figure 1, a drain plug 45 is inserted into drain outlet 43, and when drain plug 45 opens drain outlet 43, water flows into drain outlet 43. When drain plug 45 closes drain outlet 43, drain outlet 43 is blocked, preventing water from flowing into drain outlet 43.

[0047] <Tapered shape of groove surface 42> Next, the tapered shape of the groove surface 42 will be described.

[0048] 3, the groove surface 42 has a tapered shape at the boundary with the bottom surface 41. Specifically, the groove surface 42 has a tapered shape in the region T1 and the region T2.

[0049] In FIG. 3, the width of the groove surface 42 at a first position in the left-right direction is defined as width C1. The width of the groove surface 42 at a second position in the left-right direction is defined as width C2. The second position is farther from the drain outlet 43 than the first position in the left-right direction. When the first and second positions are set in this manner, the groove surface 42 in region T1 has a tapered shape, so width C1 is narrower than width C2. Similarly, the groove surface 42 in region T2 also has a tapered shape. The plane parallel to the front-rear direction corresponding to the first position is plane VV, and its cross-sectional view is shown in FIG. 5. The plane parallel to the front-rear direction corresponding to the second position is plane VI-VI, and its cross-sectional view is shown in FIG. 6. As shown in FIGS. 5 and 6, width C1 is narrower than width C2 even in cross-sectional views.

[0050] In this way, the groove surface 42 has a tapered shape that becomes wider in the left-right direction as it moves away from the drain outlet 43. Furthermore, the tapered shape is linear. Specifically, the boundary of the groove surface 42 with respect to the bottom surface 41 is linear, and the width of the linear boundary in the front-rear direction becomes wider as it moves away from the drain outlet 43. In this way, the groove surface 42 has a linear and tapered shape in the regions T1 and T2.

[0051] Furthermore, in a plan view, the drain outlet 43 is located on an extension line of the linear boundary of the groove surface 42. Specifically, as shown in FIG. 3, if the linear boundary between the groove surface 42 and the bottom surface 41 that form the tapered shape is extended to form an extension line L1, the linear extension line L1 and the drain outlet 43 will overlap in a plan view. In particular, in a plan view, it is preferable that the extension line L1 passes through the center of the drain outlet 43. Note that the extension line L1 is not limited to passing through the center of the drain outlet 43, and may pass through a region of the drain outlet 43, such as a region in front of the center of the drain outlet 43. In this way, the tapered shape is set based on the drain outlet 43.

[0052] Furthermore, the angle of the linear shape in the tapered shape is greater than 0 degrees relative to the left-right direction. That is, the linear shape in the tapered shape is not parallel to the left-right direction but has an angle of 0 degrees or more. The angle of the linear shape is, for example, approximately 10 degrees. Furthermore, if the line connecting the center of the drain outlet 43 and the front corner of the bottom 31 is line L2, the angle of the linear shape in the tapered shape is less than the angle between line L2 and the left-right direction. Note that it is preferable that the angle of the linear shape in the tapered shape be closer to 0 degrees than the angle between line L1 and the left-right direction.

[0053] Furthermore, the boundary position between the bottom surface 41 and the groove surface 42 in the front-rear direction does not exceed the center position of the drain outlet 43 in the front-rear direction. In other words, position P1, which is the deepest position of the bottom surface 41, is located in front of position P2, which is the center position of the drain outlet 43. This shape makes it easier for water to flow from the groove surface 42 into the drain outlet 43.

[0054] As shown in FIG. 3 , the groove surface 42 has an arc-shaped region T3 between the regions T1 and T2. The drainage outlet 43 is provided within the groove surface 42, and the groove surface 42 is formed to surround the drainage outlet 43. Specifically, in the region T3 around the drainage outlet 43, the boundary between the groove surface 42 and the bottom surface 41 is an arc-shaped region centered on the center point of the drainage outlet 43. That is, the groove surface 42 around the drainage outlet 43 is recessed in an arc-shaped region relative to the bottom surface 41. The arc-shaped region T3 and the linear regions of the regions T1 and T2 are connected by curved shapes. It is more preferable that the distance between the center of the drainage outlet 43 and the arc-shaped region is shorter than the distance between the center of the drainage outlet 43 and the rear side surface portion 32a.

[0055] In this way, the groove surface 42 has an arc shape in the region T3 around the drainage port 43, and has a tapered shape in the regions T1 and T2 on the side surface portion 32 side in the left-right direction from the arc shape.

[0056] <Comparison with reference example> Next, a comparison between the washbasin 12 of this embodiment and a reference example will be described.

[0057] FIG. 9 is a plan view showing an example of the configuration of a reference washbasin 100, which is a washbasin in a reference example. FIG. 10 is a perspective view showing an example of the configuration of the reference washbasin 100. Like the washbasin 12 in this embodiment, the reference washbasin 100 has a bottom surface 101 and a groove surface 102. However, the boundary between the bottom surface 101 and the groove surface 102 extends parallel to the left-right direction. In other words, the groove surface 102 does not have a tapered shape. Therefore, the width of the groove surface 102 in the front-to-rear direction is constant.

[0058] When water is discharged into area A1 of bottom surface 101 of washbasin 100, it flows from bottom surface 101 into groove surface 102, just as in washbasin 12. Then, water flows from both the left and right sides of groove surface 102 toward the center (toward drain outlet 43). If groove surface 102 extends parallel to the left and right directions, the flow direction of water flowing from the right side toward the center and the flow direction of water flowing from the left side toward the center may be parallel but opposite to each other. In such a case, water may collide in area A2 between drain outlet 43 and the rear side surface, causing splashing. When water splashes, dirt flowing with the water also splashes, and dirt may adhere to the rear side surface, as shown by dirt A3 in FIG. 10, for example.

[0059] In contrast, the groove surface 42 in this embodiment has a tapered shape. Figure 11 is a plan view showing the flow of water in the washbasin 12 of this embodiment shown in Figure 3. In Figure 11, the bottom surface 41 is indicated by multiple dots, and the groove surface 42 is indicated by parallel diagonal lines. As shown in Figure 11, in the washbasin 12 of this embodiment, water discharged from the faucet 10 lands in area B1 of the bottom surface 41. The landing water then spreads across the bottom surface 41 and flows toward the groove surface 42 due to the slope. The water that flows toward the groove surface 42 also flows toward the drain 43 due to the slope. At this time, the tapered shape of the groove surface 42 increases the amount of water that flows directly into the drain 43 compared to the reference washbasin 100. This makes it difficult for the amount of water to increase in area B2, which is between the drain 43 and the rear side surface portion 32, and suppresses water splashing in area B2. Furthermore, the tapered shape of groove surface 42 suppresses an increase in the water flow speed in region B2. Therefore, the collision energy between water flowing from the right and water flowing from the left in region B2 is small, suppressing water splashing. Therefore, in washbasin 12, compared to reference washbasin 100, splashing of dirt is suppressed, and dirt can be smoothly flushed down drain outlet 43. Furthermore, even when the amount of water is small, dirt can be smoothly flushed down drain outlet 43. Furthermore, because water is effectively guided to drain outlet 43, even when the amount of water temporarily increases, water is prevented from accumulating, causing dirt to lift up and adhere to side portion 32.

[0060] <Action and effect> As described above, the washbasin 12 of this embodiment is a washbasin 12 including a bottom 31 and a side portion 32 surrounding the bottom 31, wherein the bottom 31 is provided with a drain outlet 43, a bottom surface 41 extending in a first direction from the side portion 32 toward the drain outlet 43, and a groove surface 42 that is connected to the bottom surface 41 in the first direction and is lower than the bottom surface 41, extends in a second direction perpendicular to the first direction relative to the drain outlet 43, and slopes downward toward the drain outlet 43, and the width of the groove surface 42 at a first position in the second direction is narrower than the width of a second position in the second direction that is farther from the drain outlet 43 than the first position.

[0061] According to this configuration, groove surface 42 has a shape (tapered shape) that is narrower at the second position farther in the second direction (left-right direction) than at the first position, so the amount of water that flows directly into drain outlet 43 increases. That is, the amount of water that splashes before entering drain outlet 43 is reduced. In addition, the tapered shape reduces the speed at which water flows before entering drain outlet 43, reducing the energy of collisions between water droplets and reducing water splashing. This reduces the scattering of dirt, allowing the dirt to flow smoothly into drain outlet 43.

[0062] Furthermore, in the washbasin 12, the groove surface 42 has a shape that becomes wider as it becomes farther from the drain outlet 43 in the second direction.

[0063] According to this configuration, groove surface 42 has a shape (tapered shape) that becomes wider as it goes farther from drain outlet 43, which suppresses scattering of dirt and allows dirt to flow smoothly into drain outlet 43.

[0064] In addition, in washbasin 12, groove surface 42 has a boundary with bottom surface 41 that is linear, and the width of the linear boundary in the first direction increases as it moves away from drain outlet 43.

[0065] According to this configuration, the tapered shape is linear, which suppresses scattering of dirt and allows the dirt to flow smoothly into the drain outlet 43.

[0066] In addition, in the washbasin 12, the drain outlet 43 is located within the area of ​​the groove surface 42, and the boundary between the groove surface 42 and the bottom surface 41 has an arc shape centered on the center point of the drain outlet 43 in a planar view, and the width of the groove surface 42 at the first position is narrower than the width at the second position on the side surface portion 32 side in the second direction than the arc shape.

[0067] According to this configuration, the boundary between the groove surface 42 around the drain outlet 43 and the bottom surface 41 is arc-shaped, making it possible to make the drain outlet 43 less visible due to the difference in height between the bottom surface 41 and the groove surface 42. In addition, the area of ​​the bottom surface 41 can be secured, allowing for a large working space.

[0068] Furthermore, in the washbasin 12, the groove surface 42 has a shape in which the drain outlet 43 is located on an extension line L1 of the boundary of the linear shape in a plan view.

[0069] This configuration allows dirt to be smoothly flushed down the drain outlet 43. In addition, the area of ​​the bottom surface 41 can be secured, allowing for a large working space.

[0070] Furthermore, in the washbasin 12, the boundary position between the bottom surface 41 and the groove surface 42 in the first direction does not exceed the center position of the drain outlet 43 in the first direction.

[0071] This configuration increases the amount of water that flows directly into the drain outlet 43, allowing dirt to be washed away into the drain outlet 43 smoothly.

[0072] In addition, the washbasin 12 has a rectangular bottom 31, and the angle of the boundary of the linear shape relative to the second direction is greater than 0 degrees and is less than the angle formed by the line connecting the center of the drain outlet 43 and the corner of the bottom 31 relative to the second direction.

[0073] This configuration allows dirt to be smoothly flushed down the drain outlet 43. In addition, the area of ​​the bottom surface 41 can be secured, allowing for a large working space.

[0074] --- Second embodiment --- Next, a second embodiment will be described.

[0075] The second embodiment differs from the first embodiment in the shape of the side surface portion 32. Note that a description of the same points as in the first embodiment will be omitted. Also, the second embodiment can be combined with the first embodiment.

[0076] In the second embodiment, the rear side surface portion 32a that contacts the groove surface 42 at the rear side has a convex portion 51. Fig. 12 is a plan view showing an example of the configuration of the washbasin 12 according to this embodiment. In Fig. 12, the bottom surface 41 is indicated by multiple dots, and the groove surface 42 is indicated by parallel oblique lines. Fig. 13 is a perspective view showing an example of the configuration of the washbasin 12 according to this embodiment.

[0077] The rear side surface portion 32a has a protrusion 51 that protrudes in the front-rear direction between the rear side surface portion 32a and the drain outlet 43. In a plan view such as FIG. 12, the protrusion 51 protrudes from the rear side surface portion 32a toward the center of the drain outlet 43. As shown in FIG. 12, the protrusion 51 has a curved shape. Specifically, in a plan view, the protrusion 51 has a width (width in the front-rear direction) that is greatest at the position of the drain outlet 43 in the left-right direction and decreases in width toward the left-right direction. In other words, the protruding length increases as it approaches the center in the left-right direction. Note that, in a plan view, the radius of curvature of the protrusion 51 is preferably greater than the radius of curvature of the arc shape of the groove surface 42. Furthermore, the width of the protrusion 51 in the left-right direction is preferably wider than the size of the drain outlet 43. In particular, the width of the protrusion 51 in the left-right direction is preferably wider than the width of the arc shape of the groove surface 42.

[0078] 13, the protrusion of the convex portion 51 gradually decreases in the upward direction (height direction). For example, the height of the convex portion 51 is set to a position lower than the edge portion 21. The lower end of the convex portion 51 contacts the surface of the groove surface 42. In other words, the convex portion 51 has a shape that protrudes toward the front side while contacting both the rear side surface portion 32a and the groove surface 42.

[0079] 12, the provision of the protrusion 51 effectively suppresses water scattering in the region B2 between the drain outlet 43 and the rear side surface portion 32. Specifically, in the region B2, the flow directions of the water flowing from the right side and the water flowing from the left side are no longer exactly opposite (parallel and opposite directions), so the collision energy is small and water scattering is suppressed. As a result, scattering of dirt is suppressed and dirt can be smoothly flushed into the drain outlet 43.

[0080] <Action and effect> As described above, in the washbasin 12 of this embodiment, the groove surface 42 is in contact with the side portion 32 in the first direction, and the side portion 32 has a convex portion 51 that protrudes in the first direction between the side portion 32 and the drain outlet 43.

[0081] This configuration can reduce the energy of water collisions on the groove surface 42 between the drain outlet 43 and the side surface 32, thereby reducing water scattering. This reduces dirt scattering, allowing the dirt to flow smoothly into the drain outlet 43.

[0082] In addition, in the washbasin 12, the convex portion 51 has a shape in which, when viewed in a plan view, the width in the first direction is greatest at the position of the drain outlet 43 in the second direction, and the width in the first direction decreases toward the second direction.

[0083] This configuration effectively prevents water from scattering, that is, prevents dirt from scattering.

[0084] <Modification> The present disclosure is not limited to the above-described embodiments. In other words, designs obtained by appropriately modifying the above-described specific examples by a person skilled in the art are also included within the scope of the present disclosure as long as they include the features of the present disclosure. Furthermore, the elements of the above-described embodiments and the following modifications can be combined to the extent technically possible, and combinations of these can also be included within the scope of the present disclosure as long as they include the features of the present disclosure.

[0085] For example, in the first and second embodiments, the first direction is the front-to-rear direction and the second direction is the left-to-right direction, but the first direction and the second direction are not limited to the left-to-right direction and the front-to-rear direction, respectively. For example, the first direction may be the left-to-right direction and the second direction may be the front-to-rear direction.

[0086] In the first embodiment, the groove surface 42 has an arc shape in the region T3, but there are no limitations on the shape of the groove surface 42 in the region T3 around the drainage port 43. The arc shape may be omitted, and the left and right tapered shapes may be connected in front of the drainage port 43.

[0087] In the first and second embodiments, the tapered shape of the groove surface 42 is described as being linear, but the shape is not limited to being linear as long as the width increases with increasing distance from the drain outlet 43 in the second direction. For example, the tapered shape may be a curved shape or the like.

[0088] In the second embodiment, the groove surface 42 contacts the rear side surface portion 32a on the rear side, and therefore the rear side surface portion 32a has the convex portion 51. However, the convex portion 51 is not limited to being provided on the rear side surface portion 32a depending on the position of the groove surface 42. For example, if the groove surface 42 is provided on the front side, the convex portion 51 may be provided on the front side surface portion 32b. [Explanation of symbols]

[0089] 12: Washbasin 31: Bottom 32: Side part 41: Bottom 42:Groove surface 43:Drain port C1: Width (width at first position) C2: Width (width at second position)

Claims

1. A washbasin including a bottom and a side portion surrounding the bottom, The bottom portion is The drain and a bottom surface extending in a first direction from the side surface portion toward the drain outlet; a groove surface that is connected to the bottom surface in the first direction and is lower than the bottom surface, extends in a second direction perpendicular to the first direction relative to the drain outlet, and slopes downward toward the drain outlet; Equipped with The groove surface has a width at a first position in the second direction that is narrower than a width at a second position that is farther from the drain outlet than the first position in the second direction. Washbasin.

2. The groove surface has a shape that becomes wider as it becomes farther from the drain outlet in the second direction. The washbasin according to claim 1.

3. The groove surface has a boundary with the bottom surface that is linear, and the width of the linear boundary in the first direction increases as the boundary becomes farther from the drain outlet. The washbasin according to claim 2.

4. The drainage port is provided within the groove surface area, The boundary between the groove surface and the bottom surface has an arc shape centered on the center point of the drain outlet in a plan view, the groove surface has a width at the first position narrower than a width at the second position on the side surface portion side of the arc shape in the second direction; A washbasin according to any one of claims 1 to 3.

5. The groove surface has a shape in which the drain outlet is located on an extension line of the boundary of the linear shape in a plan view. The washbasin according to claim 3.

6. a boundary position between the bottom surface and the groove surface in the first direction does not exceed a center position of the drain outlet in the first direction; A washbasin according to any one of claims 1 to 3.

7. The bottom is rectangular, The angle of the boundary of the linear shape with respect to the second direction is greater than 0 degrees and is equal to or less than the angle formed by a line connecting the center of the drain outlet and the corner of the bottom with respect to the second direction. The washbasin according to claim 5.

8. the groove surface is in contact with the side surface portion in the first direction, The side surface portion has a convex portion that protrudes in the first direction between the side surface portion and the drain outlet. A washbasin according to any one of claims 1 to 3.

9. In a plan view, the convex portion has a shape in which the width in the first direction is largest at the position of the drain outlet in the second direction and the width in the first direction becomes smaller toward the second direction. A washbasin according to claim 8.

10. A washbasin according to any one of claims 1 to 3; A faucet that discharges water onto the bottom surface of the washbasin; A washbasin with

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