JP7432343B2 - wash basin - Google Patents

Description

The present disclosure relates to wash basins.

Patent Document 1 discloses a washbasin including a washbowl portion. In this washbasin, the inner surface of the washbowl portion is formed into a continuous concave shape.

JP 2018-89263 Publication

The structure in which the inner surface of the washbowl part is formed into a continuous concave shape is advantageous from the viewpoint of making it difficult to put hands into the concavely shaped part in the front area of the inner surface and making it easier to put hands inside the washbasin. There is room for improvement. When water is stored in a washbasin for use, there is a need for technology that suppresses splashing outside the front bowl of the washbasin.

The problem to be solved by the present disclosure is to provide a washbasin that allows easy access from the front and prevents droplets from flying out of the front bowl.

The washbasin according to the present disclosure includes a bottom bowl surface portion in which a drain port is formed, and a distance between an edge located on the front side and the drain port is provided in front of the bottom bowl surface portion, and the distance between the edge located on the front side and the drain port is The bowl part has a front bowl surface part formed to become larger as it moves away from the left and right, and the front bowl surface part is provided with a convex part having a convex surface extending in the left and right direction.

1 is a perspective view schematically showing a washbasin according to Embodiment 1. FIG. FIG. 2 is a front view schematically showing a washbasin. FIG. 2 is a plan view schematically showing a washbasin. 4 is a sectional view taken along the line IV-IV in FIG. 3. FIG. 4 is a sectional view taken along the line VV in FIG. 3. FIG. 4 is a sectional view taken along the line VI-VI in FIG. 3. FIG. 4 is a sectional view taken along the line VII-VII in FIG. 3. FIG. 8 is a partially enlarged view of FIG. 7. FIG. 4 is a sectional view taken along the line IX-IX in FIG. 3. FIG. 8 is a sectional view taken along line XX in FIG. 7. FIG. 8 is a sectional view taken along the line XI-XI in FIG. 7. FIG. 8 is a sectional view taken along the line XII-XII in FIG. 7. FIG. 8 is a sectional view taken along the line XIII-XIII in FIG. 7. FIG. It is a perspective view for explaining the flow of hot water that collided with the inner surface of the bowl part. FIG. 3 is a cross-sectional view for explaining the flow of hot water that collides with the inner surface of the bowl part. FIG. 3 is a diagram for explaining how hot water flows to a drain port. FIG. 3 is a sectional view of a washbasin according to Embodiment 2.

<Embodiment 1>
As shown in FIG. 1, the washbasin 1 is a washbasin that is attached to a washstand 100. The washstand 100 includes a washbasin 1, a washstand 101, a back panel 102, a mirror cabinet 103, and a faucet unit 104. In the washstand 100, a back panel 102 is arranged above the washstand 101, and a mirror cabinet 103 is arranged above the back panel 102. The washstand 100 is installed by placing the washstand 101 on the floor and fixing the washstand 101, back panel 102, and mirror cabinet 103 to the wall using fixing members such as nails and screws. . This mirror cabinet 103 is an example of an upper cabinet. In the following description, the front-rear direction will be described with the wall side direction of the bathroom vanity 100 in the installed state as the rear, and the opposite direction as the front. Regarding the left and right directions, the left and right directions when the washstand 100 is viewed from the front will be directly referred to as the left and right directions.

The wash basin 101 is formed into a box shape as a whole. A plate-shaped counter 101A is fixed to the top of the wash basin 101. The counter 101A is an example of a support member. The washbasin 1 is installed on this counter 101A. The mirror cabinet 103 has a mirror door 103A that can be opened and closed. A storage space is formed behind the mirror door 103A. The faucet unit 104 is arranged above the washbasin 1 and below the mirror cabinet 103.

Most of the faucet unit 104 is housed within the mirror cabinet 103. The faucet unit 104 includes a discharge part 104A that discharges hot water, a water discharge operation part 104B that operates the water discharge from the discharge part 104A, and a drain operation part 104C that opens and closes the drain faucet 105 attached to the washbasin 1. are doing. The discharge section 104A, the water discharge operation section 104B, and the drain operation section 104C are provided to protrude downward from the lower end of the mirror cabinet 103, respectively.

As shown in FIG. 2, the washbasin 1 is installed with its peripheral portion resting on a counter 101A serving as a support member. Specifically, the washbasin 1 has a peripheral portion placed on the top surface M of the counter 101A, and a center portion thereof that is fitted into the counter 101A through a notch 101B formed in the counter 101A (see FIG. 5). The upper surface M of the counter 101A is an example of a mounting surface for the support member. The washbasin 1 is made of pottery, with each part integrally formed by casting. The washbasin 1 as a whole has a generally rectangular shape in plan view that is slightly elongated in the left-right direction. The rear end of the washbasin 1 is in contact with the front surface of the back panel 102.

As shown in FIGS. 2 to 13, the washbasin 1 includes a bowl portion 10, a pedestal portion 30, and an overflow portion 40. The bowl portion 10 has a substantially rectangular shape in plan view. The bowl section 10 has a front bowl surface section 20, left and right bowl surface sections 12, a rear bowl surface section 13, and a bottom bowl surface section 14. The bowl portion 10 is integrally formed with a front bowl surface portion 20, a left and right bowl surface portion 12, and a rear bowl surface portion 13 continuously surrounding a bottom bowl surface portion 14. In the bowl portion 10, a drain port 15 is formed at a position near the rear of the center portion of the bottom bowl surface portion 14 in the left-right direction. The drain port 15 is formed to vertically penetrate the bottom bowl surface portion 14. The drain port 15 is formed at the lowest position of the bottom pot surface part 14. The drain port 15 communicates with an overflow channel 42 that communicates with an overflow hole 41 of the overflow section 40, which will be described later. The bowl portion 10 has a bowl shape that becomes lower from each of the bowl surface portions 20, 12, and 13 toward the drain port 15 of the bottom bowl surface portion 14. In the bowl portion 10, a water drop position PF is arranged in front of the drain port 15 on the inner surface 10A. This water drop position PF can be specified as the center of the area where the water drops when the maximum amount of water is discharged from the discharge section 104A. The water drop position PF is the intersection of the falling trajectory of the water discharged from the discharge portion 104A and the inner surface 10A of the bowl portion 10 (see FIG. 15). In FIG. 15, the falling trajectory of the discharged water is schematically drawn with a broken line.

As shown in FIG. 3, the front pot surface part 20 is configured such that the distance between the edge 20A located on the front side and the drain port 15 increases as the distance from the drain port 15 is left or right. As shown in FIG. 2, the end edge 20A of the front pot surface portion 20 is formed to extend substantially horizontally in the left-right direction. The front pot surface part 20 is provided at the farthest position from the position of the drain port 15 in plan view compared to the other pot surface parts 12 and 13. As shown in FIG. 7, the inner surface 10A of the bowl portion 10 has the gentlest slope as a whole from the drain port 15 of the bottom bowl surface portion 14 toward the front bowl surface portion 20. The front pot surface section 20 has an upper end positioned at the lowest position compared to the other pot surface sections 12 and 13.

The lower edge of the front bowl surface part 20 can be specified as a part where the inclination angle toward the drain port 15 on the inner surface 10A of the bowl part 10 changes to a larger angle than a predetermined angle. Specifically, in the side cross section shown in FIG. 7, the lower edge of the front bowl surface 20 is a region where the angle of inclination toward the drain port 15 changes to a larger angle than the angle of inclination of the bottom bowl surface 14. In the front bowl surface part 20, a water drop position PF, where hot water is discharged from the discharge part 104A, is arranged near the lower edge.

The left and right bowl surfaces 12 are provided on the left and right sides of the bottom bowl surface 14, and have substantially symmetrical shapes. The inner surface 10A of the bowl portion 10 is formed of a gently curved surface that is concave diagonally downward in the left and right bowl surface portions 12. The left and right pot surface portions 12 face each other and form a pot surface whose left and right width increases as it goes upward. As shown in FIG. 7, each of the left and right bowl surfaces 12 is formed such that the position of the upper end 12A is gently curved and lowered from the rear end toward the front end. The upper ends 12A of the left and right pot surface parts 12 have an upwardly swollen shape when viewed from the side. The "upwardly bulging shape" is a shape in which the center of the upper end 12A bulges upward from a virtual straight line connecting the front end and the rear end of the upper end 12A. As for the upper ends 12A of the left and right pot surface parts 12, the rear end is the highest and the front end is the lowest. The upper ends 12A of the left and right pot surfaces 12 constitute the edges of the left and right pot surfaces 12, and the rear ends are continuous with the edges 13A of the rear pot surfaces 13, and the front ends are continuous with the edges 20A of the front pot surfaces 20. do.

The rear bowl surface portion 13 is formed to have an upper end that extends substantially horizontally in the left-right direction at a position higher than the upper end of the front bowl surface portion 20. As shown in FIG. 3, the rear pot surface portion 13 is provided at a position closest to the drain port 15 in plan view compared to the other pot surface portions 20 and 12. Therefore, the inner surface 10A of the bowl portion 10 has the steepest slope as a whole from the drain port 15 of the bottom bowl surface portion 14 toward the rear bowl surface portion 13. Specifically, as shown in FIG. 7, the inner surface 10A of the bowl portion 10 in the rear bowl surface portion 13 has a planar shape that rises obliquely upward with a nearly vertical inclination in most of the lower end side. The end edge 13A of the rear pot surface portion 13 has a flat surface shape extending in the vertical direction.

The bowl part 10 has a convex part 22, a mounting part 23, and a recessed part 24, as shown in FIGS. 3 and 7. The convex portion 22 is provided on the front bowl surface portion 20. The mounting section 23 is provided at the front end of the front bowl surface section 20. The recess 24 is provided below the protrusion 22 . The concave portion 24, the convex portion 22, and the mounting portion 23 are formed so as to be smoothly continuous in this order from below and from the rear.

The convex portion 22 is formed such that the entire front bowl surface portion 20 having a predetermined thickness curves downward toward the drain port 15. The convex portion 22 is formed in a region of the front bowl surface portion 20 excluding the front end, left end, right end, and about one third of the lower side. The convex portion 22 has a convex surface 22A extending in the left-right direction, as shown in FIGS. 7 and 11. The lower edge of the convex surface 22A is located at a height of 50% of the water level from the drain port 15 in the vertical direction, assuming that the water level is 100% at the lowest point of the edge of the bowl portion 10 with respect to the height of the drain port 15. It is located above the position. In this embodiment, the lowest position of the edge is the center position in the left-right direction of the edge 20A of the front bowl surface part 20. The lower edge of this convex surface 22A is located below the overflow hole 41. In a configuration in which the concave surface 24A is continuous below the convex surface 22A, the lower edge of the convex surface 22A can be specified as an inflection point. For example, in the side cross section shown in FIG. 7, the inflection point between the convex surface 22A and the concave surface 24A exists at a position about 65% of the water level from the drain port 15. The top of the convex surface 22A is located above the 80% water level from the drain port 15 when the water level is defined in the same manner as described above. For example, in the side cross section shown in FIG. 7, the top of the convex surface 22A is located at about 85% of the water level from the drain port 15. An upper surface M of the counter 101A is arranged near the back side of the top of the convex surface 22A.

The convex surface 22A has a smooth curved shape so as to be convex upward and rearward in the front-rear direction. The convex surface 22A is a convex curved surface whose inclination angle with respect to the horizontal plane gradually increases continuously from the upper end toward the lower end. The inclination angle of the convex surface 22A will be specifically explained later. As shown in FIG. 11, the convex surface 22A has a shape that is gently curved in the left-right direction so that the radius of curvature gradually decreases from the center toward the left and right. The center portion of the convex surface 22A in the left-right direction is a curved surface that extends along the edge 20A of the front bowl surface portion 20 and is gently curved. The left and right end portions of the convex surface 22A are curved surfaces that curve backward in the left and right directions. The convex surface 22A smoothly continues to the surrounding surfaces.

The mounting portion 23 has a configuration in which the entire front bowl surface portion 20 having a predetermined thickness extends substantially horizontally. The mounting portion 23 is formed in a region of the front end excluding the left end and right end. The placement part 23 becomes a part located below the arm when a hand is inserted between the discharge part 104A and the water drop position PF from the front. The mounting portion 23 has a mounting surface 23A extending in the left-right direction. The mounting surface 23A extends substantially linearly in the left-right direction, and slightly descends toward the rear in the front-rear direction. The placement surface 23A is a surface facing upward, and is formed so that small items such as toiletries such as a toothbrush and a towel can be placed thereon. The mounting surface 23A includes a flat surface. The mounting portion 23 corresponds to a flat portion having a flat surface.

As shown in FIG. 4, in the cross-sectional shape of the front end portion of the front bowl surface portion 20 taken along a plane perpendicular to the front-rear direction, both sides are located above the center in the left-right direction. The front end portion of the front pot surface portion 20 has a shape that gradually rises from the placement portion 23 toward the left and right. Specifically, the front end portion of the front pot surface portion 20 is provided with raised portions that extend upward from the placement surface 23A of the placement portion 23 on both left and right sides of the placement portion 23.

As shown in FIG. 7, the recess 24 is formed such that the entire front bowl surface 20 having a predetermined thickness curves downward toward the drain port 15. The recess 24 has a concave surface 24A. The concave surface 24A is formed in a region below the convex portion 22 in the front bowl surface portion 20. The concave surface 24A is formed to rise gently from the upper surface of the bottom bowl surface portion 14. The bottom of the concave surface 24A is located near the front of the water drop position PF.

The concave surface 24A has a smoothly curved shape convex downward and forward in the front-rear direction. The concave surface 24A is a concave curved surface whose inclination angle with respect to the horizontal plane gradually decreases from the upper end toward the lower end. The inclination angle of the concave surface 24A will be specifically explained later. As shown in FIGS. 12 and 13, the concave surface 24A has a shape that is curved backward in the left and right directions so as to surround the water drop position PF.

In the side cross section shown in FIG. 8, the inclination angles of the mounting surface 23A, the convex surface 22A, and the concave surface 24A with respect to the horizontal plane will be described. In the curve showing the inner surface 10A of the bowl part 10, the position of the upper end of the front bowl surface part 20 is P1, the position between the mounting surface 23A and the convex surface 22A is P2, and the position of the inflection point between the convex surface 22A and the concave surface 24A is P3. , the position of the lower end of the front bowl surface part 20 is set to P4. The tangent to the curve indicating the inner surface 10A of the bowl portion 10 is defined as T, and the inclination angle of this tangent T with respect to the horizontal plane is defined as θ. This inclination angle θ is 0° or more and 90° or less at any position. In FIG. 8, the tangent T and the inclination angle θ at each point P1 to P4 are represented by the number attached to the point P. The mounting surface 23A has a sufficiently small inclination angle θ in the range from point P1 to point P2, and is formed in such a manner that even if a small item is placed above it, it will not easily slip off (θ1<θ2). The inclination angle θ gradually increases continuously from above to below the point P2. In other words, there is no sharp shape such as a corner at the point P2, and the mounting surface 23A and the convex surface 22A are smoothly continuous. The convex surface 22A is formed such that the inclination angle θ continuously increases gradually from the point P2 toward the inflection point P3 (θ2<θ3). The inclination angle θ starts to decrease from the convex surface 22A side toward the concave surface 24A side with the inflection point P3 as a boundary. The concave surface 24A is formed such that the inclination angle θ gradually decreases from the inflection point P3 to the point P4 (θ3>θ4).

In the side cross section shown in FIG. 9, regions that are continuous on the left and right sides of the recess 24 will be described. The bottom surface located at the lowest level appearing in this side cross section is located at about 30% of the water level from the drain port 15. A region of the inner surface 10A of the bowl portion 10 that is continuous to the left and right of the recessed portion 24 is a gently curved surface that gradually rises toward the front from the above-mentioned bottom surface. The radius of curvature of the region extending from left to right of this recessed portion 24 is larger than the radius of curvature of the concave surface 24A in the front-rear direction. In the inner surface 10A that appears in the cross-sectional shape of the bowl portion 10 cut along the front-rear direction, the lowest position moves forward as it goes left and right. For example, if the lowest position of the inner surface 10A shown in the side cross section of FIG. 7 is specified as the center of the drain port 15, the lowest position of the inner surface 10A shown in the side cross section of FIG. Located in

A horizontal cross-sectional shape cut along a horizontal plane passing through the water drop position PF shown in FIG. 13 will be described. 10 A of inner surfaces of the bowl part 10 have the curved part 16 which curves backward toward left and right in the horizontal cross-sectional shape cut by the horizontal plane which passes the water discharge fall position PF. This curved portion 16 has a larger left and right radius of curvature than the front end 16A. A front end 16A of the curved portion 16 is constituted by a front bowl surface portion 20. In this embodiment, the front end 16A of the curved portion 16 constitutes a part of the concave surface 24A of the concave portion 24. The portions 16B located on the left and right sides of the curved portion 16 are constituted by the left and right pot surface portions 12.

The curved portion 16 surrounds the drain port 15 and extends to the rear of the drain port 15 with the water discharge falling position PF as a front end 16A. A front end 16A of the curved portion 16 is curved in front of the drain port 15 and extends left and right. Portions 16B located on the left and right sides of the curved portion 16 extend rearward while being gently curved on the left and right sides of the drain port 15. The curved portion 16 has a substantially U-shape, and its rear end is connected to the rear bowl surface portion 13 . This curved portion 16 constitutes a guide surface that guides the hot water that has fallen to the spouted water fall position PF toward the rear.

A horizontal cross-sectional shape cut along a horizontal plane passing above the water drop position PF shown in FIG. 12 will be described. The position of this horizontal plane is about 30% of the water level from the drain port 15 and is below the overflow hole 41. The bowl portion 10 has corner portions 17 on both left and right sides behind the drain port 15. This corner portion 17 is located between the left and right bowl surfaces 12 and the rear bowl surface 13, and has a front portion comprised of the left and right bowl surfaces 12, and a rear portion comprised of the rear bowl surface 13. The corner portion 17 extends vertically from the bottom pot surface portion 14 to the upper end 12A of the left and right pot surface portions 12. In a horizontal cross-sectional shape cut along a horizontal plane passing through the water drop position PF shown in FIG. 13, the left and right corner portions 17 are close to each other and have a continuous shape. In other words, in a horizontal cross-sectional shape cut along a horizontal plane passing through the water drop position PF shown in FIG. 13, the rear end of the inner surface 10A of the bowl portion 10 has a curved shape rather than a straight line extending left and right.

Comparing the horizontal cross-sectional shapes shown in FIGS. 10 to 13, the front end of the inner surface 10A of the bowl portion 10 is formed such that the radius of curvature increases as it goes upward. At low water levels, the vertical dimension of the inner surface 10A of the bowl portion 10 is larger than the horizontal dimension of the water surface (see FIG. 13), and as the water level rises, the ratio of the vertical dimension to the horizontal dimension of the water surface increases, and the overflow hole 41 At the lower end position, the vertical dimension is smaller than the horizontal dimension (see FIG. 11). The vertical dimension is the width before and after the center position of the drain port 15 in FIGS. 10 to 13, and the horizontal dimension is the width to the left and right of the center position of the drain port 15 in FIGS. 10 to 13.

The inner surface 10A of the bowl portion 10 is formed so that the width in the left and right direction becomes smaller toward the corner portion 17. In other words, the left and right bowl surfaces 12 are formed of curved surfaces in which the surfaces facing the rear bowl surface 13 are curved inward in the left-right direction. The portion formed so that the width on the left and right becomes smaller toward the corner portion 17 is a guiding surface that guides the hot water toward the corner portion 17 and gradually changes the flow direction of the hot water toward the inside in the left-right direction. Configure. The portion formed so that the width in the left and right direction decreases toward the corner portion 17 can have the effect of alleviating the impact of hot water colliding with the rear portion of the corner portion 17.

The radius of curvature of the corner portion 17 is smaller than the radius of curvature of the left and right sides of the curved portion 16 . The corner portion 17 has a shape in which a front portion extends rearward, and a rear portion thereof is bent inward in the left-right direction from the rear end of the front portion. The rear portion of the corner portion 17 constitutes a wall surface against which hot water flowing rearward along the front portion of the corner portion 17 collides. In other words, the corner portion 17 constitutes a second guide surface that changes the flow direction of the hot water flowing backward along the left and right bowl surface portions 12 to a direction inward in the left-right direction.

A horizontal cross-sectional shape cut along a horizontal plane passing through the lower end position of the overflow hole 41 shown in FIG. 11 will be described. In this horizontal cross-sectional shape, the inner surface 10A of the bowl portion 10 has a front edge portion 18 that becomes larger as the distance from the drain port 15 increases from the left and right sides of the drain port 15, and an upper portion that curves backward on both left and right sides of the front edge portion 18. It has a curved part 19.

The front edge portion 18 is constituted by a front bowl surface portion 20. In this embodiment, the front edge portion 18 forms a part of the convex surface 22A below the top of the convex portion 22. The upper curved portion 19 is formed between the front bowl surface portion 20 and the left and right bowl surface portions 12. The radius of curvature of the upper curved portion 19 is larger than the radius of curvature of the front end of the curved portion 16 . The radius of curvature of the upper curved portion 19 is larger than the radius of curvature of the corner portion 17 appearing in the same horizontal section. The upper curved portion 19 is located near the water surface when the washbasin 1 is full of water, and constitutes a third guide surface that guides forward water toward the overflow hole 41 .

As shown in FIGS. 2 to 6, the pedestal portion 30 is provided continuously below the front bowl surface portion 20 and the left and right bowl surface portions 12, and constitutes a peripheral portion of the washbasin 1. The pedestal section 30 is placed on the upper surface M of the counter 101A. Water is stopped between the pedestal portion 30 and the counter 101A by a caulking material (not shown).

As shown in FIG. 7, the front surface 31 of the pedestal section 30 has an overhang shape in which the upper end is located forward than the lower end. The front surface 31 of the pedestal section 30 includes a concave curved surface whose inclination angle with respect to the horizontal plane gradually increases from the upper end to the lower end. The front surface 31 of the pedestal portion 30 corresponds to the front surface extending downward from the edge 20A. The radius of curvature of the curved surface on the front surface 31 is approximately constant. The radius of curvature of this curved surface is smaller than the maximum radius of curvature of the convex surface 22A of the front bowl surface portion 20. The curved surface on the front surface 31 is formed over the entire area from the left end to the right end of the front surface 31.

The pedestal portion 30 is connected to the front bowl surface portion 20 on the back side of the convex surface 22A of the front bowl surface portion 20. A portion 32 where the base portion 30 and the front bowl surface portion 20 connect has an upwardly concave shape. The surface on the back side of the convex surface 22A in the front bowl surface portion 20 is a concave curved surface extending along the convex surface 22A. The pedestal part 30 has a wall part shaped upward toward the rear, and this wall part is connected to the front bowl surface part 20. A portion 32 where the base portion 30 and the front bowl surface portion 20 connect is recessed away from the upper surface M of the counter 101A. A portion 32 where the base portion 30 and the front bowl surface portion 20 connect has a groove shape extending in the left-right direction. In a state where the washbasin 1 is installed on the counter 101A, most of the part 32 where the base part 30 and the front bowl surface part 20 connect is arranged along the front edge of the notch 101B formed in the counter 101A. The portion where the pedestal portion 30 and the left and right pot surface portions 12 connect has a groove shape extending in the front-rear direction. The portion where the pedestal portion 30 and the pot surface portions 20, 12 connect is located between the pot surface portions 20, 12 and a U-shaped wall portion in plan view that is fixed to the counter 101A by a fixing member 52, which will be described later. There is.

The overflow part 40 is formed in a cylindrical shape extending rearward of the rear pot surface part 13 and below the bottom pot surface part 14 in a substantially L-shape when viewed from the side. The overflow part 40 has an overflow hole 41 formed in its upper part that opens into the bowl part 10 . In the overflow part 40, an overflow channel 42 extending from an overflow hole 41 extends to the drain port 15. The lower edge of the overflow hole 41 has a water level of 60% from the drain port 15 in the vertical direction, when the water level is 100% at the lowest position of the edge of the bowl portion 10 with reference to the height of the drain port 15. It is located at 80% or less.

As shown in FIG. 10, the washbasin 1 has a pair of fixing parts 50. Each of the fixing parts 50 is provided on the left and right sides of the drain port 15 when viewed from the bottom, and at the positions of the left and right pedestal parts 30, respectively. Each fixing portion 50 has a hole 51A formed therein. The hole 51A is formed in a U-shaped wall portion extending along the edges 20A, 12A of the washbasin 1 in a plan view. The washbasin 1 is fixed to the counter 101A by inserting the fixing members 52 into these holes 51A.

Next, the flow of hot water discharged from the discharge portion 104A into the washbasin 1 having such a configuration will be explained with reference to FIGS. 14 to 16.

In this bathroom vanity 100, when a water spout operation section 104B provided in a faucet unit 104 is operated, hot water is discharged from a discharge section 104A.

The hot water discharged from the discharge part 104A falls toward the water discharge fall position PF. The hot water heading toward the spouting water fall position PF falls forward at a large angle, for example, an angle greater than 45° with respect to the horizontal plane. A concave surface 24A of the concave portion 24 is located in front of the water spouting fall position PF so as to rise upward. A convex surface 22A of the convex portion 22 is located above the concave portion 24. The hot water that collides with the inner surface 10A of the bowl part 10 at and in the vicinity of the water spout fall position PF moves forward and upward along the concave surface 24A of the recess 24, and then forms a flow toward the water spout fall position PF due to gravity. do. At this time, the hot water discharged later continues to fall near the spouting water fall position PF, and these hot water join together to concentrate on the front side of the spouting water falling position PF. The hot water that has gathered in front of the spouting water fall position PF is divided into left and right sides along the concave surface 24A of the recess 24, and flows backward on the left and right sides of the water spouting fall position PF. In this way, a bundle of hot water is formed in front of the spouted water drop position PF, which is thinner on both left and right sides than in the center in the left and right direction.

A part of the hot water that flows backward from the left and right sides of the water spouting position PF as a bundle of hot water flows down along the top surface of the bottom bowl surface part 14 and flows into the drain port 15 from both the front and left and right sides. reach. The other part of the hot water that forms a bundle of hot water and flows backward from the left and right sides of the water drop position PF reaches the corner part 17 between the left and right bowl surfaces 12 and the rear bowl surface 13. When the hot water reaches the corner part 17 between the left and right bowl surfaces 12 and the rear bowl surface 13, the flowing direction changes to a direction inward in the left-right direction along the corner parts 17. The cleaning water that has passed through the corner portion 17 flows down along the upper surface of the bottom bowl surface portion 14 while heading inward in the left-right direction, and reaches the drain port 15 from the rear. The flow toward these drain ports 15 flows into the drain port 15 without passing through the upper surface of the drain plug 105, and is drained from the drain port 15. In other words, in the washbasin 1 of this embodiment, a film of hot water directed toward the drain port 15 is formed below the drain plug 105 . This washbasin 1 has a structure in which hot water discharged onto the top surface of the drain plug 105 or near the drain plug 105 falls, and a water film is less likely to form between the drain plug 105 and the drain opening 15, resulting in a smooth flow. Drainage is achieved.

Next, the manner in which water is stored and used in the washbasin 1 having such a configuration will be described with reference to FIGS. 7 and 11.

In this washstand 100, when the drain port 15 is closed with a drain plug 105 (not shown in FIG. 7) and water is stored in the washbasin 1, the lower end of the overflow hole 41 is filled with water. In FIG. 7, the water level when the water is full is indicated by a chain line. The shape of the water surface when the water is full is the shape of the portion surrounded by the bowl portion 10 in FIG. In front of and above the water surface, a convex surface 22A of the convex portion 22 and a placement surface 23A of the placement portion 23 are arranged in this order. The upper end of the front bowl surface section 20 is lower than the other bowl surface sections 12 and 13, making it easier to put a hand inside the bowl section 10.

When washing your hands or washing clothes, etc., when you put your hands in pooled water and move your hands, a water current may be generated and some of the water may flow forward. The water flowing forward is restricted from moving forward any further by the convex surface 22A of the front bowl surface 20, and flows left and right along the front edge 18 in FIG. 11. The water that has flowed left and right along the front edge 18 forms a rearward flow along the upper curved portion 19, flows toward the overflow hole 41, and is drained from the overflow hole 41. In this way, even if the water stored in the washbasin 1 heads forward, the water is prevented from splashing out forward. In a configuration in which the upper curved portion 19 is not formed and corner portions are formed between the front bowl surface portion 20 and the left and right bowl surface portions 12, bubbles such as water and detergent remain in the corner portion located farthest from the overflow hole 41. There is a possibility that In this embodiment, such a corner is not formed, and an upwardly curved part 19 is formed between the front bowl face part 20 and the left and right bowl faces 12, so that water and bubbles are prevented from flowing from the front edge part 18 to the overflow hole 41. You can move smoothly. In the configuration in which a corner is formed between the front bowl surface section 20 and the left and right bowl surface sections 12, the flow of water from the center in the left and right direction and the flow of water from the rear are locally concentrated at the corner, and water flows outside. There is also concern that the virus may jump out. In the present embodiment, such a corner is not formed and an upwardly curved portion 19 is formed between the front bowl surface section 20 and the left and right bowl surfaces 12, so that water may not be absorbed due to local concentration of water. can be prevented from jumping out to the outside.

Next, a case where droplets fly in the washbasin 1 will be described. As shown in FIGS. 7 and 11, the front pot surface portion 20 has a larger area in a portion that extends outward above the water surface than the left and right pot surface portions 12 and the rear pot surface portion 13. When the droplets fly forward, the droplets can be received by the convex surface 22A and the placement surface 23A of the front bowl surface section 20 and flowed down into the bowl section 10. The height of the upper ends 12A of the left and right pot surface parts 12 is higher than the front ends, especially in the central part where droplets easily fly. When droplets fly left and right, the left and right bowl surfaces 12 restrict them from going beyond the upper end 12A to the outside. In this way, the washbasin 1 is suppressed from splashing splashes to the outside.

The effects of the washbasin 1 having the above configuration will be explained.

The washbasin 1 includes a bowl portion 10 having a bottom bowl surface portion 14 and a front bowl surface portion 20. A drain port 15 is formed in the bottom pot surface portion 14. The front bowl surface portion 20 is provided in front of the bottom bowl surface portion 14, and is formed such that the distance between the edge 20A located on the front side and the drain port 15 increases as the distance from the drain port 15 to the left and right increases. . The front bowl surface portion 20 is provided with a convex portion 22 having a convex surface 22A extending in the left-right direction. This washbasin 1 is easy to put your hand in from the front, and splashes are difficult to get past the convex part 22 and out of the front bowl.

The front pot surface part 20 is provided with a mounting part 23 extending in the left-right direction at the front end. In this washbasin 1, it is easy to put a hand in from the front along the placing part 23, and droplets are difficult to fly beyond the convex part 22 and the placing part 23 to the outside of the front bowl.

The front pot surface part 20 is provided with a mounting part 23 as a flat part having a flat surface at the front end part. This washbasin 1 is easy to put your hand in from the front along the flat surface, and droplets are difficult to fly beyond the convex portion 22 and the flat portion to the outside of the front bowl.

The bowl portion 10 is provided with a concave portion 24 having a concave surface 24A below the convex portion 22. This washbasin 1 can secure the amount of water that can be stored in the washbasin 1 by the recess 24, and by providing the protrusion 22, it is easy to put your hand in from the front, and splashes can go beyond the protrusion 22 and out of the front bowl. Difficult to fly to.

The bowl portion 10 further includes left and right bowl surface portions 12, which are provided on the left and right sides of the bottom bowl surface portion 14, and whose upper ends 12A are bulged upward in side view. Compared to a configuration in which the upper ends 12A of the left and right bowl surfaces 12 are straight, this washbasin 1 can secure the height of the center of the left and right bowl surfaces 12, allowing water to flow from the washbasin 1 to the outside of the left and right bowls. You can prevent it from jumping out.

In the cross-sectional shape of the front end portion of the front bowl surface portion 20 taken along a plane perpendicular to the front-rear direction, both sides are located above the center in the left-right direction. This washbasin 1 allows easy access from the front at the center of the front end, and by securing height on both left and right sides of the front end, water can be prevented from splashing out of the washbasin 1.

The front surface 31 extending downward from the edge 20A includes a concave curved surface whose inclination angle with respect to the horizontal plane increases from the upper end toward the lower end. In this washbasin 1, water droplets falling from the edge 20A tend to fall toward the lower end. When the washbasin 1 is watertight with a caulking material, water droplets are less likely to adhere to the caulking material, and effects such as preventing the caulking material from staining and mold can be obtained.

The washbasin 1 is a washbasin placed on a counter 101A. The washbasin 1 further includes a pedestal part 30 that is provided continuously below the front basin surface part 20 and placed on the upper surface M of the counter 101A. The pedestal portion 30 is connected to the front bowl surface portion 20 on the back side of the convex surface 22A of the front bowl surface portion 20. A portion 32 where the base portion 30 and the front bowl surface portion 20 connect has an upwardly concave shape. This washbasin 1 can prevent the portion where the pedestal portion 30 and the front bowl surface portion 20 are connected from interfering with the upper surface M. In this washbasin 1, the portion 32 where the pedestal portion 30 and the front basin surface portion 20 connect has a concave shape, thereby dispersing stress, so that stress concentration can be suppressed to a small level. For this reason, it is possible to prevent the pottery from cracking or deforming during firing or from cracking due to heat shock.

<Embodiment 2>
As shown in FIG. 17, the washbasin 201 according to the second embodiment is different from the first embodiment in the configuration of the overflow part. Components similar to those in Embodiment 1 are designated by the same reference numerals and redundant explanations will be omitted.

The overflow portion 240 is formed in a cylindrical shape extending in an arc shape in side view from the front of the front bowl surface portion 20 and below the bottom bowl surface portion 14 . The overflow part 240 has an overflow hole 241 that opens into the bowl part 10 at the top thereof. In the overflow portion 240, an overflow channel 242 extending from an overflow hole 241 extends to the drain port 15. The lower edge of the overflow hole 241 has a water level of 60% or more and 80% from the drain port 15 in the vertical direction of the bowl portion 10 when the water level is 100% at the upper end of the front bowl surface portion 20 with the position of the drain port 15 as a reference. % or less.

The front pot surface portion 20 has an overflow hole 241 formed below the top of the convex surface 22A. The overflow hole 241 is located above the concave surface 24A. This overflow hole 241 is located between the top of the convex surface 22A and the inflection point between the convex surface 22A and the concave surface 24A.

Since this washbasin 201 has an overflow hole 241 formed below the top of the convex surface 22A, water flowing forward can escape from the overflow hole 241, and the droplets can flow over the convex portion 22 and reach the front basin surface. Difficult to fly forward.

The present disclosure is not limited to the disclosure of Embodiments 1 and 2 explained with the above description and drawings, but also includes, for example, the following embodiments.

(1) In the bowl portion, the shapes of the left and right bowl surface portions and the rear bowl surface portion are not particularly limited. The shape of the front pot surface part is not limited as long as it is formed such that the distance between the edge located on the front side and the drain port increases as the distance from the drain port increases to the left and right. For example, the edge of the front bowl surface portion may extend in the left-right direction in an elliptical arc shape, an elliptical arc shape, or may extend in a polygonal shape.

(2) The shape of the convex portion, the placing portion, and the concave portion, and the size and position of the area where they are formed can be changed as appropriate. The curvature deformation of the convex portion may not be constant. The curvature deformation of the recess may not be constant. The concave part, the convex part, and the mounting part are not limited to a continuous configuration, and may be provided with a plane interposed between the concave surface and the convex surface, or may be provided with a plane interposed between the convex surface and the upper surface. .

(3) The front bowl surface part does not need to be provided with a placing part. The front end portion of the front pot surface portion may be provided linearly in the left-right direction.

(4) The recessed portion may not be provided on the front bowl surface portion. The recessed portion may be provided across the front bowl surface portion and the bottom bowl surface portion in the bowl portion. The concave portion is not limited to a configuration that is continuous with the convex portion, and may be provided with a plane interposed between it and the convex surface.

(5) The configuration of the overflow section is not particularly limited. The position of the overflow hole can be changed as appropriate other than in the first and second embodiments.

(6) The configuration of the pedestal is not particularly limited. For example, the front surface of the pedestal may be formed by an inclined surface. The shape of the part where the pedestal part and the front bowl surface part are connected can also be changed as appropriate.

DESCRIPTION OF SYMBOLS 1,201... Washbasin, 10... Bowl part, 12... Left and right bowl surface parts, 12A... Upper end, 13... Rear bowl surface part, 14... Bottom bowl surface part, 15... Drain port, 20... Front bowl surface part, 20A... Edge, 22...Convex part, 22A...Convex surface, 23...Placement part, 23A...Placement surface, 24...Concave part, 24A...Concave surface, 30...Pedestal part, 31...Front surface (front surface extending downward from the edge), 101A... Counter, 241...Overflow hole, M...Top surface (supporting member mounting surface)

Claims (8)

A bottom pot surface portion with a drainage port formed;
A bowl comprising: a front bowl face part provided in front of the bottom bowl face part and formed such that the distance between the edge located on the front side and the drain port increases as you move away from the drain port to the left and right. Equipped with a department,
The front pot surface portion is provided with a convex portion having a convex surface extending in the left-right direction,
The front basin surface portion is a washbasin in which an overflow hole is formed below the top of the convex surface. The washbasin according to claim 1 , wherein the front surface extending downward from the edge includes a concave curved surface whose inclination angle with respect to the horizontal plane increases from the upper end to the lower end. A washbasin installed while being placed on a support member,
further comprising a pedestal part provided continuously below the front pot surface part and placed on the mounting surface of the support member,
The pedestal portion is connected to the front bowl surface portion on the back side of the convex surface of the front bowl surface portion,
3. The washbasin according to claim 1, wherein a portion where the pedestal portion and the front bowl surface portion connect has an upwardly concave shape. The washbasin according to any one of claims 1 to 3, wherein the front basin surface portion is provided with a placement portion having a placement surface extending in the left-right direction at a front end portion. The washbasin according to any one of claims 1 to 4, wherein the front basin surface portion is provided with a flat portion having a flat surface at a front end portion. The washbasin according to any one of claims 1 to 5, wherein the bowl portion is provided with a recessed portion having a concave surface below the convex portion. 7. The bowl part further includes left and right bowl face parts provided on the left and right sides of the bottom bowl face part, the upper ends of which are formed in a shape that bulges upward in a side view. The washbasin described in item 1. According to any one of claims 1 to 7, the front end of the front pot surface part is located above the center in the left-right direction on both sides in a cross-sectional shape cut along a plane perpendicular to the front-back direction. washbasin.

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