Wash basins and sinks

Abstract

Dirt can be easily flushed down the drain. [Solution] 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 front-rear 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 front-rear direction and is lower than the bottom surface 41, extends in a left-right direction perpendicular to the front-rear direction relative to the drain outlet 43, and slopes downward toward the drain outlet 43, and the groove surface 42 has a width C1 at a first position in the left-right direction which is narrower than a width C2 at a second position farther from the drain outlet 43 in the left-right direction than the first position.

Description

[Technical field]

[0001] The present disclosure relates to washbasins and washstands. [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 surface is provided on the front side of the bottom of the bowl, and a groove is provided on the back side, and water discharged onto the flat surface flows from the flat surface to the groove, and then flows from the groove to the washbasin. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-143141 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the structure of Patent Document 1, for example, water flowing in the groove from the right toward the drain and water flowing in the groove from the left toward the drain collide between the drain and the side surface at the back, and dirt may adhere to the side surface at the back. In a washbasin, it is required to smoothly flush dirt into the drain to keep it clean.

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

[0006] In order to solve the above problems, a washbasin according to a first aspect of the present disclosure is a washbasin including a bottom and a side portion surrounding the bottom, wherein the bottom comprises a drain outlet, a bottom surface extending in a first direction from the side portion 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 narrower shape (tapered shape) at the second position farther from the first position in the second direction, so the amount of water flowing directly into the drain increases. In other words, the amount of water that splashes before entering the drain is reduced. In addition, the tapered shape reduces the speed at which the water flows before entering the drain, 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 the drain.

[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 in the second direction.

[0009] According to this configuration, the groove surface has a shape (tapered shape) that becomes wider the farther it is from the drain outlet, so that scattering of dirt is suppressed and dirt can be smoothly flushed into the drain outlet.

[0010] In addition, in a washbasin according to a third aspect of the present disclosure, the groove surface has a boundary with the bottom surface that is linear, and the width of the linear boundary in the first direction becomes wider the farther it is from the drain.

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

[0012] In addition, in a washbasin according to a fourth aspect of the present disclosure, the drain outlet is provided within the area of ​​the groove surface, and the boundary between the groove surface and the bottom surface, in a planar view, has an arc shape centered on the center point of the drain outlet, and the groove surface is such that the width 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 in an arc shape, so that the drain outlet can be made difficult to see due to the difference in height between the bottom surface and the groove surface. Also, the area of ​​the bottom surface can be secured, allowing for a large working space.

[0014] In addition, in a washbasin according to a fifth aspect of the present disclosure, the groove surface is shaped such that the drain outlet is located on an extension of the boundary of the straight line shape in a plan view.

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

[0016] In addition, in a washbasin according to a 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 flowing directly into the drain, allowing dirt to be flushed 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 straight line shape with respect to the second direction is greater than 0 degrees and is less than or equal to the angle that a line connecting the center of the drain and a corner of the bottom makes with respect to the second direction.

[0019] This configuration allows dirt to be smoothly flushed down the drain, and also ensures a large bottom area, providing 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 protruding in the first direction between the side portion and the drain outlet.

[0021] According to this configuration, the energy of collision of water droplets on the groove surface between the drain outlet and the side surface can be suppressed, and the scattering of water can be suppressed. Therefore, scattering of dirt can be suppressed, and the dirt can be smoothly flushed into the drain outlet.

[0022] In addition, in the washbasin according to the ninth aspect of the present disclosure, the convex portion, when viewed in a plan view, has a shape in which 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] According to this configuration, the scattering of water is effectively suppressed, that is, the scattering of dirt is suppressed.

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

[0025] With this configuration, a washbasin can be constructed that allows dirt to be smoothly flushed down the drain. Effect of the Invention

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

[0027] [Figure 1] 1 is a perspective view showing an example of the overall configuration of a washbasin vanity according to a first embodiment of the present disclosure; [Diagram 2] FIG. 2 is a perspective view showing a configuration example of the washbasin in FIG. 1. [Diagram 3] FIG. 2 is a plan view showing a configuration example of the washbasin in FIG. 1. [Figure 4] 4 is a cross-sectional view of the washbasin of FIG. 3 taken along line IV-IV. [Diagram 5] A cross-sectional view of the VV surface of the washbasin in Figure 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] FIG. 8 is a cross-sectional view of the washbasin of FIG. 3 taken along line VIII-VIII. [Figure 9] This 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. [Figure 11] FIG. 4 is a plan view showing the flow of water in the washbasin of FIG. 3. [Figure 12] 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 PREFERRED EMBODIMENTS

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

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

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

[0031] 1, the left-right direction, the up-down direction, and the front-rear direction are set with respect to a user standing in front of the washstand 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 number 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 washbasin 3 is provided below the mirror cabinet 2. The washbasin 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 side of the cabinet 11, and the faucet 10 discharges water toward the washbasin 12. The faucet 10 discharges water toward (toward) a bottom surface 41, which will be described later.

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

[0036] The washbasin 12 is provided on the upper side of the cabinet 11. In other words, the washbasin 12 is supported by the cabinet 11. Fig. 2 is a perspective view showing an example of the configuration of the washbasin 12. The washbasin 12 includes an edge portion 21 and a bowl portion 22. The bowl portion 22 and the edge 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. 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 width of the right and left sides. The upper surface of the edge portion 21 has a flat shape, and the edge portion 21 as a whole is flat.

[0038] The bowl portion 22 is disposed in the center in the left-right direction of the washbasin 12. The bowl portion 22 is recessed downward from the upper surface of the rim portion 21. The bowl portion 22 includes a bottom portion 31 and a side portion 32.

[0039] The bottom 31 is the lowest surface of the bowl portion 22, and the bowl portion 22 is formed by surrounding the bottom 31 with the side portion 32. FIG. 3 is a plan view showing an example of the configuration of the washbasin 12. The bottom 31 is rectangular. The side portion 32 includes a back side portion 32a connected to the back end of the bottom 31, a front side portion 32b connected to the front end of the bottom 31, a left side portion 32c connected to the left end of the bottom 31, and a right side portion 32d connected to the right end of the bottom 31. Each of the back side portion 32a, the front side portion 32b, the left side portion 32c, and the right side portion 32d is a wall surface extending upward from the bottom 31. The bottom 31 has a linear shape extending in the left-right direction at the front and back ends, and a linear shape extending in the front-rear direction at the left and right ends. The back side surface portion 32a, the front side surface portion 32b, the left side surface portion 32c, and the right side surface portion 32d are curved at the bottom and connected to the respective ends of the bottom 31. The back side surface portion 32a and the left side surface portion 32c, the left side surface portion 32c and the front side surface portion 32b, the front side surface portion 32b and the right side surface portion 32d, and the right side surface portion 32d and the back side surface portion 32a are connected by a curved shape. In this way, the bottom 31 and the side surface portion 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 spreads out to and is connected to each of 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 of the IV-IV plane in FIG. 3. FIG. 5 is a cross-sectional view of the VV plane in FIG. 3. FIG. 6 is a cross-sectional view of the VI-VI plane in FIG. 3. In the IV-IV plane where the drain port 43 is present as shown in FIG. 4, and in the plane where the drain port 43 is not present as shown in FIG. 5 and FIG. 6, the bottom surface 41 is inclined downward toward the groove surface 42. Specifically, the bottom surface 41 is inclined downward from the front to the back. As shown in FIG. 4, FIG. 5, and FIG. 6, the inclined surface of the bottom surface 41 is disposed at a higher position than the groove surface 42. FIG. 7 is a cross-sectional view of the VII-VII plane in FIG. 3. As shown in FIG. 7, the bottom surface 41 is not inclined in the left-right direction. Therefore, the water discharged to the bottom surface 41 flows from the front side to the back side along the inclination, and flows into the groove surface 42. The inclination of the bottom surface 41 in the left-right direction is not limited to the above, and may be inclined.

[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 with respect to the drainage port 43. The groove surface 42 is connected to the rear side surface portion 32a at the rear side, the left side surface portion 32c at the left side, and the right side surface portion 32d at 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. And, 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 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 is slanted downward from the left and right ends toward center C of bowl portion 22. That is, groove surface 42 is lowest at center C. Drain outlet 43 is disposed at the position of center C. Therefore, groove surface 42 is slanted downward toward drain outlet 43.

[0046] Returning to FIG. 3, the drain outlet 43 is a circular hole penetrating the bowl portion 22 downward. The drain outlet 43 discharges water from the washbasin 12 to the outside. The drain outlet 43 is connected to a drain pipe. As shown in FIG. 1, a drain plug 45 is inserted into the drain outlet 43, and when the drain plug 45 opens the drain outlet 43, water flows into the drain outlet 43. When the drain plug 45 closes the drain outlet 43, the drain outlet 43 is blocked, and water cannot flow into the 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 the first position in the left-right direction is defined as width C1. The width of the groove surface 42 at the second position in the left-right direction is defined as width C2. The second position is farther from the drainage port 43 than the first position in the left-right direction. When the first position and the second position are set in this manner, the groove surface 42 in the region T1 has a tapered shape, so that the width C1 is narrower than the width C2. The groove surface 42 also has a tapered shape in the region T2. ​​The surface parallel to the front-rear direction corresponding to the first position is the VV surface, and a cross-sectional view of the surface is shown in FIG. 5. The surface parallel to the front-rear direction corresponding to the second position is the VI-VI surface, and a cross-sectional view of the surface is shown in FIG. 6. As shown in FIG. 5 and FIG. 6, the width C1 is narrower than the width C2 even when viewed in a cross-sectional view.

[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 drainage port 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 boundary of the linear shape in the front-rear direction becomes wider as it moves away from the drainage port 43. In this way, the groove surface 42 has a linear and tapered shape in the regions T1 and T2.

[0051] In addition, the drainage port 43 is located on an extension line of the boundary of the straight line shape of the groove surface 42 in a plan view. Specifically, as shown in FIG. 3, when the straight line boundary between the groove surface 42 and the bottom surface 41 constituting the tapered shape is extended to form an extension line L1, the straight line extension line L1 overlaps with the drainage port 43 in a plan view. In particular, in a plan view, it is preferable that the extension line L1 passes through the center of the drainage port 43. Note that the extension line L1 is not limited to passing through the center of the drainage port 43, and may pass through a region of the drainage port 43, such as a region on the front side of the center of the drainage port 43. In this way, the tapered shape is set based on the drainage port 43.

[0052] Moreover, the angle of the linear shape in the tapered shape is greater than 0 degrees with respect to the left-right direction. That is, the linear shape in the tapered shape is not parallel to the left-right direction and has an angle of 0 degrees or more. The angle of the linear shape is, for example, about 10 degrees. Furthermore, if the line connecting the center of the drain outlet 43 and the corner on the front side of the bottom 31 is line L2, the angle of the linear shape in the tapered shape is equal to or smaller than the angle between line L2 and the left-right direction. It is preferable that the angle of the linear shape in the tapered shape is closer to 0 degrees than the angle between line L1 and the left-right direction.

[0053] Furthermore, the boundary position of the bottom surface 41 with 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. That is, position P1, which is the rearmost 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 region T1 and the region T2. ​​The drainage port 43 is provided within the region of the groove surface 42, and the groove surface 42 is formed to surround the drainage port 43. Specifically, in the region T3 around the drainage port 43, the boundary between the groove surface 42 and the bottom surface 41 has an arc-shaped region centered on the center point of the drainage port 43. That is, the groove surface 42 around the drainage port 43 is recessed in an arc-shaped region with respect to the bottom surface 41. The arc-shaped region T3 and the linear shapes of the regions T1 and T2 are connected by curved shapes. It is more preferable that the distance between the center of the drainage port 43 and the arc-shaped region is shorter than the distance between the center of the drainage port 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. The reference washbasin 100 has a bottom surface 101 and a groove surface 102, similar to the washbasin 12 in this embodiment. 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-rear direction is constant.

[0058] When water is discharged into the area A1 of the bottom surface 101 of the reference washbasin 100, the water flows from the bottom surface 101 to the groove surface 102, as in the washbasin 12. Then, water flows from the left and right directions of the groove surface 102 toward the center (the drain outlet 43 side). At this time, if the groove surface 102 extends parallel to the left and right directions, the flow direction of the water flowing from the right side to the center and the flow direction of the water flowing from the left side to the center may be parallel to each other and opposite directions. In such a case, the water may collide in the area A2 between the drain outlet 43 and the side surface at the back, and the water may splash. When the water splashes, dirt flowing with the water also splashes, and dirt may adhere to the side surface at the back, for example, as shown as dirt A3 in FIG. 10.

[0059] In contrast, the groove surface 42 according to this embodiment has a tapered shape. FIG. 11 is a plan view showing the flow of water in the washbasin 12 of this embodiment shown in FIG. 3. FIG. 11 shows the bottom surface 41 with multiple dots and the groove surface 42 with parallel oblique lines. As shown in FIG. 11, in the washbasin 12 according to this embodiment, the water discharged from the faucet 10 lands on the area B1 of the bottom surface 41. Then, the landed water spreads on the bottom surface 41 and flows to the groove surface 42 due to the inclination. The water that flows to the groove surface 42 flows to the drain 43 side due to the inclination. At this time, since the groove surface 42 has a tapered shape, the amount of water that flows directly into the drain 43 is increased compared to the reference washbasin 100. As a result, the amount of water in the area B2 between the drain 43 and the side surface portion 32 on the back side is less likely to increase, and the splashing of water in the area B2 is suppressed. In addition, the tapered shape of the groove surface 42 suppresses an increase in the water flow speed in the region B2. Therefore, the collision energy between the water flowing from the right side and the water flowing from the left side in the region B2 is small, and the scattering of water is suppressed. Therefore, in the washbasin 12, scattering of dirt is suppressed compared to the reference washbasin 100, and the dirt can be smoothly drained to the drain outlet 43. Even when the amount of water is small, the dirt can be smoothly drained to the drain outlet 43. In addition, since the water is effectively guided to the drain outlet 43, even if the amount of water increases temporarily, the water is prevented from accumulating, the dirt is lifted, and the adhesion to the side portion 32 is suppressed.

[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 suppressed. In addition, the tapered shape suppresses the speed at which water flows before entering drain outlet 43, reducing the energy of collision between water droplets and suppressing water splashing. Therefore, scattering of dirt is suppressed, and dirt can be smoothly flushed into drain outlet 43.

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

[0063] According to this configuration, the groove surface 42 has a shape (tapered shape) that becomes wider the farther it is from the drain outlet 43, so that scattering of dirt is suppressed and the dirt can be smoothly flushed down to the drain outlet 43.

[0064] In addition, in the washbasin 12, 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 first direction becomes wider the farther it is from the drain outlet 43.

[0065] According to this configuration, since the tapered shape is a straight line shape, scattering of dirt is suppressed, and the dirt can be smoothly flushed down 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 groove surface 42 has a width at a first position narrower than the width at a 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 in the shape of an arc, so that the drain outlet 43 can be made difficult to see 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] Further, in the washbasin 12, the groove surface 42 is shaped such that the drain outlet 43 is located on an extension line L1 of the boundary of the straight line shape in a plan view.

[0069] According to this configuration, dirt can 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] In addition, 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] According to this configuration, the amount of water flowing directly into the drain outlet 43 is increased, and dirt can be smoothly flushed into the drain outlet 43.

[0072] In addition, the washbasin 12 has a rectangular bottom 31, and the angle of the boundary of the straight line shape with respect to the second direction is greater than 0 degrees and is less than the angle that a line connecting the center of the drain 43 and the corner of the bottom 31 makes with respect to the second direction.

[0073] According to this configuration, dirt can 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] In the second embodiment, the shape of the side surface portion 32 is different from that in the first embodiment. Note that a description of the same points as in the first embodiment will be omitted. In addition, 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 shown with multiple dots, and the groove surface 42 is shown with parallel oblique lines. Fig. 13 is a perspective view showing an example of the configuration of the washbasin 12 according to this embodiment.

[0077] Between the rear side surface portion 32a and the drainage outlet 43, there is a convex portion 51 that protrudes in the front-rear direction. In a plan view such as FIG. 12, the convex portion 51 protrudes from the rear side surface portion 32a toward the center of the drainage outlet 43. As shown in FIG. 12, the convex portion 51 has a curved shape. Specifically, in a plan view, the convex portion 51 has a shape in which the width (width in the front-rear direction) is the largest at the position of the drainage outlet 43 in the left-right direction, and the width becomes smaller toward the left-right direction. That is, the protruding length becomes larger as it approaches the center in the left-right direction. In addition, in a plan view, it is preferable that the curvature radius of the convex portion 51 is larger than the curvature radius of the arc shape of the groove surface 42. In addition, it is preferable that the width of the convex portion 51 in the left-right direction is wider than the size of the drainage outlet 43. In particular, it is preferable that the width of the convex portion 51 in the left-right direction is wider than the width of the arc shape of the groove surface 42 in the left-right direction.

[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. That is, 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, by providing the protrusion 51, splashing of water in the area B2 between the drain outlet 43 and the rear side surface portion 32 is effectively suppressed. Specifically, in the area 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 that the collision energy is small and splashing of water is suppressed. Therefore, 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] According to this configuration, the energy of collision of water droplets on the groove surface 42 between the drain outlet 43 and the side surface portion 32 can be suppressed, and the scattering of water is suppressed. Therefore, scattering of dirt is suppressed, and the dirt can be smoothly flushed into the drain outlet 43.

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

[0083] According to this configuration, the scattering of water is effectively suppressed, that is, the scattering of dirt is suppressed.

[0084] <Modification> The present disclosure is not limited to the above-mentioned embodiment. In other words, the above-mentioned specific example, to which a person skilled in the art appropriately adds design modifications, is also included in the scope of the present disclosure as long as it has the features of the present disclosure. In addition, each element of the above-mentioned embodiment and the following modified examples can be combined to the extent technically possible, and the combination of these is also included in the scope of the present disclosure as long as it has the features of the present disclosure.

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

[0086] In the first embodiment, the groove surface 42 has an arc shape in the region T3, but there is no limitation 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 to each other 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 port 43 in the second direction. For example, the tapered shape may be a curved shape.

[0088] In the second embodiment, the groove surface 42 contacts the rear side surface portion 32a on the rear side, so that the rear side surface portion 32a has the convex portion 51, but 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, when 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 a front side surface portion connected to a front end portion of the bottom surface of 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 located on the right side and the left side of the drain outlet in the second direction, respectively, narrower than a width at a second position located on the right side and the left side of the drain outlet in the second direction, respectively, and provided at a position farther from the drain outlet than the first position, The groove surface has a shape that becomes wider as it becomes farther from the drain outlet in the second direction, the groove surface is in contact with the side surface portion in the first direction, The side surface portion has a convex portion protruding in the first direction between the side surface portion and the drain outlet. Washbasin.

2. In a plan view, the boundary of the groove surface with respect to the bottom surface is linear, and the width of the boundary of the linear shape in the first direction becomes wider as it is farther from the drain outlet. The washbasin according to claim 1.

3. 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. A washbasin according to claim 2.

4. In a plan view, a boundary position between the bottom surface and the groove surface in the first direction is closer to the front side surface portion than a center position of the drain outlet in the first direction. A washbasin according to claim 1 or 2.

5. 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 in a plan view, and the width in the first direction becomes smaller toward the second direction. The washbasin according to claim 1.

6. A washbasin according to claim 1 or 2; A faucet that discharges water onto the bottom surface of the washbasin; A sink equipped with

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