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 which is connected to the side portion 32 at one end and to the bottom surface 41 at the other end 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 side portion 32 has a recess 46 between the drain outlet 43 and the side portion 32 as a direction changing portion which changes the flow direction of the fluid flowing from the end side to the drain outlet 43 side so that the flow directions of the fluid flowing from each end side of the groove surface 42 in the left-right direction toward the drain outlet 43 side are not parallel to each other and opposite to each other in a planar view.

Description

[Technical field]

[0001] The present invention relates to a washbowl and a washstand. [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 invention 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 is provided with a drain outlet, a bottom surface extending in a first direction from the side portion toward the drain outlet, and a groove surface, one side of which is connected to the side portion and the other side of which is connected to the bottom surface in the first direction and is lower than the bottom surface, extending in a second direction perpendicular to the first direction relative to the drain outlet, and sloping downward toward the drain outlet, and the side portion has a direction change portion between the drain outlet and the side portion that changes the flow direction of the fluid flowing from the end side to the drain outlet so that the flow directions of the fluid flowing from each end side of the groove surface in the second direction to the drain outlet are not parallel to each other and opposite to each other in a planar view.

[0007] According to this configuration, by changing the flow direction of the fluid flowing from the end side to the drain outlet side, the collision energy of the water is reduced and the scattering of the water is suppressed. As a result, the scattering of dirt is suppressed and the dirt can be smoothly washed away into the drain outlet.

[0008] Also, in the washbasin according to the second aspect of the present disclosure, the direction changing portion is a recess provided in the side portion.

[0009] According to this configuration, the provision of the recess makes it possible to effectively change the flow direction of the fluid flowing toward the drain outlet, which means that dirt can be smoothly flushed into the drain outlet.

[0010] Furthermore, in a washbasin according to a third aspect of the present disclosure, the recess is provided in a position closest to the drain outlet on the side portion and has a recessed shape with respect to the first direction.

[0011] According to this configuration, the flow direction of the fluid can be changed around the drain outlet, allowing dirt to be smoothly flushed into the drain outlet.

[0012] In addition, in the washbasin according to the fourth aspect of the present disclosure, the recess is shaped, when viewed in a plan view, so that the width of the recess in the first direction is greatest at the position of the drain outlet in the second direction, and the width of the recess in the first direction decreases toward the second direction.

[0013] According to this configuration, the width becomes smaller the further away from the drain outlet, so that the flow direction of the fluid can be smoothly changed around the drain outlet to wash away dirt.

[0014] Furthermore, in the washbasin according to the fifth aspect of the present disclosure, the recess is shaped such that the width of the recess in the first direction decreases toward the height direction.

[0015] According to this configuration, the flow direction of the fluid can be effectively changed at a height where the water can easily flow, which means that dirt can be smoothly flushed into the drain.

[0016] In addition, in a washbasin according to a sixth aspect of the present disclosure, the direction changing portion is a convex portion provided on the side portion.

[0017] According to this configuration, the provision of the protrusions makes it possible to effectively change the flow direction of the fluid flowing toward the drain outlet, which means that dirt can be smoothly flushed away into the drain outlet.

[0018] Furthermore, in a washbasin according to a seventh aspect of the present disclosure, the convex portion is provided at a position closest to the drain outlet on the side portion and has a shape that protrudes in the first direction.

[0019] According to this configuration, the flow direction of the fluid can be changed around the drain outlet, allowing dirt to be smoothly flushed into the drain outlet.

[0020] In addition, in a washbasin according to the eighth 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.

[0021] According to this configuration, the width becomes smaller the further away from the drain outlet, so that the flow direction of the fluid can be smoothly changed around the drain outlet to wash away dirt.

[0022] In addition, in the washbasin according to a ninth aspect of the present disclosure, the convex portion has a shape in which the width in the first direction decreases toward the height direction.

[0023] According to this configuration, the flow direction of the fluid can be effectively changed at a height where the water can easily flow, which means that dirt can be smoothly flushed into the drain.

[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 invention 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] FIG. 4 is a cross-sectional view of the washbasin taken along plane IV-IV. [Figure 10] This is a plan view showing an example of the configuration of a reference washbasin, which is a washbasin of a reference example. [Figure 11] FIG. 11 is a perspective view showing a configuration example of the reference washbasin of FIG. [Figure 12] FIG. 4 is a plan view showing the flow of water in the washbasin of FIG. 3. [Figure 13] A plan view showing an example of the configuration of a washbasin according to a second embodiment. [Figure 14] FIG. 14 is a perspective view showing a configuration example of the washbasin in FIG. 13. 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] <Recess 46 of Side Portion 32> Next, the recess 46 of the side surface portion 32 will be described.

[0048] As shown in FIG. 3, in this embodiment, the side surface portion 32 has a recess 46 .

[0049] Specifically, the rear side surface portion 32a has a recess 46 recessed in the front-rear direction between the rear side surface portion 32a and the drain outlet 43. The recess 46 functions as a direction changer that changes the direction of water flowing on the groove surface 42 toward the drain outlet 43. The recess 46 changes the flow direction of water (fluid) flowing from each end side of the groove surface 42 in the left-right direction toward the drain outlet 43. In other words, the recess 46 changes the flow direction so that the flow direction of water flowing from the right end side toward the drain outlet 43 side and the flow direction of water flowing from the left end side toward the drain outlet 43 side do not collide in a state that is exactly opposite (parallel to each other and in opposite directions) in a plan view.

[0050] The drainage outlet 43 is provided within the area of ​​the groove surface 42, and the groove surface 42 is formed to surround the drainage outlet 43. The groove surface 42 has an arc shape S1 around the drainage outlet 43 as shown in FIG. 3. That is, around the drainage outlet 43, the boundary between the groove surface 42 and the bottom surface 41 has an arc shape S1. This arc shape S1 is an arc shape centered on the center point of the drainage outlet 43. The groove surface 42 has a linear shape S2 on the side surface portion 32 side (left-right direction) from the arc shape S1, and extends from the arc shape S1 to the side surface portion 32. The linear shape S2 is parallel to the left-right direction. That is, the boundary between the groove surface 42 and the bottom surface 41 has an arc shape S1 around the drainage outlet 43, and extends from the arc shape S1 in the left-right direction to each of the left side surface portion 32c and the right side surface portion 32d with a linear shape S2. As shown in FIG. 3, a width C1 of the groove surface 42 at the first position in the left-right direction is equal to a width C2 of the groove surface 42 at the second position.

[0051] The recess 46 is provided at a position closest to the drain outlet 43 in the rear side surface portion 32a. In a plan view such as FIG. 3, the recess 46 is recessed away from the center of the drain outlet 43 in the rear side surface portion 32a. The recess 46 has a curved shape. Specifically, in a plan view, the recess 46 has a shape in which the width of the recess in the front-rear direction is largest (the recess is largest) at the position of the drain outlet 43 in the left-right direction, and the width of the recess decreases toward the left-right direction. That is, the recess 46 has a largest recess in the center in the left-right direction, and the recess becomes smaller as it moves away from the center in the left-right direction. In addition, in a plan view, the radius of curvature of the recess 46 is preferably larger than the radius of curvature of the arc shape S1 of the groove surface 42. That is, the recess of the recess 46 has a gently curved shape. In addition, the width of the recess 46 in the left-right direction in a plan view is preferably larger than the size of the drain outlet 43.

[0052] 2 and 4, the width of the recess 46 decreases in the upward direction (height direction). That is, the recess 46 has a shape in which the width decreases toward the upward direction, as shown in Fig. 4. For example, the height of the recess 46 is set to a position lower than the edge 21. Furthermore, as shown in Fig. 4, the lower end of the recess 46 contacts the surface of the groove surface 42.

[0053] In addition, in the cross section shown in Figure 4, the inclined surface 47 of the drain outlet 43 and the surface 48 at the top of the recess 46 are parallel. By making the inclined surface 47 and the surface 48 parallel in this way, the mold for the bowl portion 22 can be pulled out in the parallel direction F when manufacturing the washbasin 12. Even if the recess 46 is provided in this way, it is possible to manufacture the washbasin 12 using a mold.

[0054] Fig. 9 is a cross-sectional view of the washbasin 3 taken along the IV-IV plane. As shown in Fig. 9, drainage piping 49 is provided below the drain outlet 43. For example, in the example of Fig. 9, a space 50 is provided for arranging the piping 49 and the like. By providing a recess 46, it is also possible to arrange the drain outlet 43 toward the back, which makes it possible to increase the depth of the cabinet 11 and thus increase the size.

[0055] <Comparison with reference example> Next, a comparison between the washbasin 12 of this embodiment and a reference example will be described.

[0056] Fig. 10 is a plan view showing an example of the configuration of a reference washbasin 100, which is a washbasin in a reference example. Fig. 11 is a perspective view showing an example of the configuration of the reference washbasin 100. The reference washbasin 100 has a bottom surface 101, a groove surface 102, and a rear side surface portion 132a, similar to the washbasin 12 in this embodiment. However, the rear side surface portion 132a of the reference washbasin 100 does not have a recess 46.

[0057] 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 recess 46 is not formed, 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 back side surface, and the water may splash. When the water splashes, dirt flowing with the water also splashes, and dirt may adhere to the back side surface portion 132a, for example, as shown as dirt A3 in FIG. 11.

[0058] In contrast, the rear side surface portion 32a according to this embodiment has a recess 46. FIG. 12 is a plan view showing the flow of water in the washbasin 12 of this embodiment of FIG. 3. In FIG. 12, the bottom surface 41 is shown with a plurality of dots, and the groove surface 42 is shown with parallel oblique lines. As shown in FIG. 12, 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 port 43 side due to the inclination. At this time, the recess 46 is formed on the rear side surface portion 32a, so that the direction of the water flow is changed in the area B2 between the rear side surface portion 32a and the drain port 43. Specifically, the recess 46 is formed, so that the water flowing from the right side and the water flowing from the left side in the area B2 can escape to the recess 46 side. That is, the direction of the water flowing from the right side and the water flowing from the left side in region B2 is changed to the recess 46 side (rear side) in region B2. This reduces the collision energy of the water flowing from the right side and the water flowing from the left side in region B2, and suppresses water scattering. Therefore, in the washbasin 12, compared to the reference washbasin 100, scattering of dirt is suppressed and dirt can be smoothly flushed to the drain outlet 43. Also, even when the amount of water is small, dirt can be smoothly flushed to the drain outlet 43. Also, because water is effectively guided to the drain outlet 43, even if the amount of water increases temporarily, water is prevented from accumulating, causing dirt to rise and adhere to the side portion 32.

[0059] <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 which is connected to the side portion 32 at one end and to the bottom surface 41 at the other end 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 side portion 32 has a direction change portion (concave portion 46, convex portion 51) between the drain outlet 43 and the side portion 32 which changes the flow direction of the fluid flowing from the end side to the drain outlet 43 side so that the flow directions of the fluid flowing from each end side of the groove surface 42 in the second direction to the drain outlet 43 side are not parallel to each other and opposite to each other in a planar view.

[0060] According to this configuration, the flow direction of the fluid flowing from the end side to the drain outlet 43 side is changed, so that the collision energy of the water is reduced and the scattering of the water is suppressed. Therefore, the scattering of dirt is suppressed and the dirt can be smoothly flushed into the drain outlet 43.

[0061] In addition, in the washbasin 12, the direction changing portion is a recess 46 provided in the side portion 32.

[0062] According to this configuration, by providing the recess 46, it is possible to effectively change the flow direction of the fluid flowing toward the drain outlet 43. That is, dirt can be smoothly flushed into the drain outlet 43.

[0063] Moreover, in the washbasin 12, the recess 46 is provided at a position closest to the drain outlet 43 in the side surface portion 32, and has a shape recessed in the first direction.

[0064] According to this configuration, the flow direction of the fluid can be changed around the drain outlet 43, and dirt can be smoothly flushed down to the drain outlet 43.

[0065] In addition, in the washbasin 12, the recess 46 is shaped such that, when viewed in a plan view, the width of the recess in the first direction is greatest at the position of the drain outlet 43 in the second direction, and the width of the recess in the first direction decreases toward the second direction.

[0066] According to this configuration, the width becomes smaller as it goes away from the drain outlet 43, so that the flow direction of the fluid can be smoothly changed around the drain outlet 43 to wash away dirt.

[0067] Furthermore, in the washbasin 12, the recess 46 is shaped so that the width of the recess in the first direction decreases toward the height direction.

[0068] According to this configuration, the flow direction of the fluid can be effectively changed at a height where the water can easily flow. That is, dirt can be smoothly flushed into the drain outlet 43.

[0069] --- Second embodiment --- Next, a second embodiment will be described.

[0070] In the second embodiment, a case where a direction changer different from the recess 46 in the first embodiment is used will be described. 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.

[0071] 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 as a direction changing portion. Fig. 13 is a plan view showing an example of the configuration of the washbasin 12 according to this embodiment. In Fig. 13, the bottom surface 41 is shown with multiple dots, and the groove surface 42 is shown with parallel oblique lines. Fig. 14 is a perspective view showing an example of the configuration of the washbasin 12 according to this embodiment.

[0072] 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. The convex portion 51 is provided at a position on the rear side surface portion 32a that is closest to the drainage outlet 43. In a plan view such as FIG. 13, the convex portion 51 protrudes from the rear side surface portion 32a toward the center of the drainage outlet 43. As shown in FIG. 13, 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. Note that, in a plan view, the radius of curvature of the convex portion 51 is preferably larger than the radius of curvature of the arc shape S1 of the groove surface 42. In addition, the width of the convex portion 51 in the left-right direction is preferably larger than the size of the drainage outlet 43. In particular, it is preferable that the width of the protrusion 51 in the left-right direction is greater than the width of the arc shape S1 of the groove surface 42 in the left-right direction.

[0073] 14, 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.

[0074] 13, by providing the protrusion 51, splashing of water in the area B2 between the drain outlet 43 and the side surface at the back side is effectively suppressed. Specifically, in the area B2, the flow direction of the water flowing from the right side and the water flowing from the left side is changed and is no longer exactly opposite (parallel and opposite in direction), so that the collision energy is small and splashing of water is suppressed. Therefore, scattering of dirt is suppressed and dirt can be smoothly washed away into the drain outlet 43.

[0075] <Action and effect> As described above, in the washbasin 12 according to this embodiment, the direction changing portion is the convex portion 51 provided on the side surface portion 32.

[0076] According to this configuration, by providing the convex portion 51, it is possible to effectively change the flow direction of the fluid flowing toward the drain outlet 43. That is, dirt can be smoothly flushed into the drain outlet 43.

[0077] Moreover, in washbasin 12, convex portion 51 is provided at a position closest to drain outlet 43 on side surface portion 32, and has a shape that protrudes in the first direction.

[0078] According to this configuration, the flow direction of the fluid can be changed around the drain outlet 43, and dirt can be smoothly flushed down to the drain outlet 43.

[0079] 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.

[0080] According to this configuration, the width becomes smaller as it goes away from the drain outlet 43, so that the flow direction of the fluid can be smoothly changed around the drain outlet 43 to wash away dirt.

[0081] Furthermore, in the washbasin 12, the convex portion 51 has a shape in which the width in the first direction becomes smaller toward the height direction.

[0082] According to this configuration, the flow direction of the fluid can be effectively changed at a height where the water can easily flow. That is, dirt can be smoothly flushed into the drain outlet 43.

[0083] <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.

[0084] 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.

[0085] In the first and second embodiments, 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 recessed portion 46 and the protruding portion 51, but this is not limited to the case where the recessed portion 46 and the protruding portion 51 are 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 recessed portion 46 and the protruding portion 51 may be provided on the front side surface portion 32b. [Explanation of symbols]

[0086] 12: Washbasin 31: Bottom 32: Side part 41: Bottom 42:Groove surface 43:Drain port 46: Concave (direction change part) 51: Convex part (direction change part)

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, one of which is connected to the side portion and the other of which 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 with respect to the drain outlet, and slopes downward toward the drain outlet; Equipped with The side surface portion has a direction change portion between the drain outlet and the side surface portion, which changes the flow direction of the fluid flowing from each end side of the groove surface to the drain outlet side so that the flow directions of the fluid flowing from the end side to the drain outlet side in the second direction are not parallel and opposite to each other in a plan view, The direction change portion is a recess that is provided on the side surface portion and has a recessed shape with respect to the first direction, The recess has a shape in which the width of the recess in the first direction decreases toward the height direction. Washbasin.

2. The recess is provided at a position closest to the drain outlet on the side surface. The washbasin according to claim 1.

3. In a plan view, the recess has a width in the first direction that is largest at the position of the drain outlet in the second direction, and the width of the recess in the first direction becomes smaller toward the second direction. A washbasin according to claim 1 or 2.

4. 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, one of which is connected to the side portion and the other of which 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 with respect to the drain outlet, and slopes downward toward the drain outlet; Equipped with The side surface portion has a direction change portion between the drain outlet and the side surface portion, which changes the flow direction of the fluid flowing from each end side of the groove surface to the drain outlet side so that the flow directions of the fluid flowing from the end side to the drain outlet side in the second direction are not parallel and opposite to each other in a plan view, The direction change portion is a convex portion provided on the side surface portion. Washbasin.

5. The convex portion is provided at a position closest to the drain outlet on the side surface portion and has a shape protruding in the first direction. A washbasin according to claim 4.

6. 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. A washbasin according to claim 4 or 5.

7. The convex portion has a shape in which the width in the first direction becomes smaller toward the height direction. A washbasin according to claim 4 or 5.

8. A washbasin according to claim 1 or 4; A faucet that discharges water onto the bottom surface of the washbasin; A sink equipped with

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